278 lines
7.0 KiB
PHP
278 lines
7.0 KiB
PHP
<?php
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if ( ! class_exists( 'SimplePie', false ) )
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require_once( ABSPATH . WPINC . '/class-simplepie.php' );
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/**
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* Core class used to implement a feed cache.
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*
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* @since 2.8.0
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*
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* @see SimplePie_Cache
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*/
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class WP_Feed_Cache extends SimplePie_Cache {
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/**
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* Creates a new SimplePie_Cache object.
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*
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* @since 2.8.0
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* @access public
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*
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* @param string $location URL location (scheme is used to determine handler).
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* @param string $filename Unique identifier for cache object.
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* @param string $extension 'spi' or 'spc'.
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* @return WP_Feed_Cache_Transient Feed cache handler object that uses transients.
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*/
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public function create($location, $filename, $extension) {
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return new WP_Feed_Cache_Transient($location, $filename, $extension);
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}
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}
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/**
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* Core class used to implement feed cache transients.
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*
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* @since 2.8.0
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*/
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class WP_Feed_Cache_Transient {
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/**
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* Holds the transient name.
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*
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* @since 2.8.0
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* @access public
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* @var string
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*/
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public $name;
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/**
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* Holds the transient mod name.
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*
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* @since 2.8.0
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* @access public
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* @var string
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*/
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public $mod_name;
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/**
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* Holds the cache duration in seconds.
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*
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* Defaults to 43200 seconds (12 hours).
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*
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* @since 2.8.0
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* @access public
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* @var int
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*/
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public $lifetime = 43200;
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/**
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* Constructor.
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*
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* @since 2.8.0
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* @since 3.2.0 Updated to use a PHP5 constructor.
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* @access public
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*
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* @param string $location URL location (scheme is used to determine handler).
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* @param string $filename Unique identifier for cache object.
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* @param string $extension 'spi' or 'spc'.
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*/
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public function __construct($location, $filename, $extension) {
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$this->name = 'feed_' . $filename;
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$this->mod_name = 'feed_mod_' . $filename;
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$lifetime = $this->lifetime;
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/**
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* Filters the transient lifetime of the feed cache.
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*
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* @since 2.8.0
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*
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* @param int $lifetime Cache duration in seconds. Default is 43200 seconds (12 hours).
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* @param string $filename Unique identifier for the cache object.
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*/
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$this->lifetime = apply_filters( 'wp_feed_cache_transient_lifetime', $lifetime, $filename);
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}
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/**
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* Sets the transient.
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*
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* @since 2.8.0
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* @access public
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*
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* @param SimplePie $data Data to save.
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* @return true Always true.
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*/
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public function save($data) {
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if ( $data instanceof SimplePie ) {
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$data = $data->data;
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}
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set_transient($this->name, $data, $this->lifetime);
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set_transient($this->mod_name, time(), $this->lifetime);
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return true;
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}
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/**
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* Gets the transient.
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*
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* @since 2.8.0
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* @access public
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*
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* @return mixed Transient value.
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*/
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public function load() {
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return get_transient($this->name);
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}
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/**
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* Gets mod transient.
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*
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* @since 2.8.0
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* @access public
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*
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* @return mixed Transient value.
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*/
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public function mtime() {
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return get_transient($this->mod_name);
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}
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/**
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* Sets mod transient.
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*
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* @since 2.8.0
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* @access public
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*
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* @return bool False if value was not set and true if value was set.
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*/
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public function touch() {
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return set_transient($this->mod_name, time(), $this->lifetime);
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}
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/**
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* Deletes transients.
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*
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* @since 2.8.0
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* @access public
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*
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* @return true Always true.
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*/
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public function unlink() {
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delete_transient($this->name);
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delete_transient($this->mod_name);
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return true;
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}
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}
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/**
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* Core class for fetching remote files and reading local files with SimplePie.
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*
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* @since 2.8.0
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*
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* @see SimplePie_File
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*/
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class WP_SimplePie_File extends SimplePie_File {
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/**
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* Constructor.
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*
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* @since 2.8.0
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* @since 3.2.0 Updated to use a PHP5 constructor.
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* @access public
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*
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* @param string $url Remote file URL.
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* @param integer $timeout Optional. How long the connection should stay open in seconds.
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* Default 10.
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* @param integer $redirects Optional. The number of allowed redirects. Default 5.
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* @param string|array $headers Optional. Array or string of headers to send with the request.
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* Default null.
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* @param string $useragent Optional. User-agent value sent. Default null.
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* @param boolean $force_fsockopen Optional. Whether to force opening internet or unix domain socket
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* connection or not. Default false.
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*/
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public function __construct($url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false) {
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$this->url = $url;
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$this->timeout = $timeout;
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$this->redirects = $redirects;
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$this->headers = $headers;
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$this->useragent = $useragent;
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$this->method = SIMPLEPIE_FILE_SOURCE_REMOTE;
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if ( preg_match('/^http(s)?:\/\//i', $url) ) {
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$args = array(
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'timeout' => $this->timeout,
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'redirection' => $this->redirects,
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);
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if ( !empty($this->headers) )
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$args['headers'] = $this->headers;
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if ( SIMPLEPIE_USERAGENT != $this->useragent ) //Use default WP user agent unless custom has been specified
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$args['user-agent'] = $this->useragent;
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$res = wp_safe_remote_request($url, $args);
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if ( is_wp_error($res) ) {
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$this->error = 'WP HTTP Error: ' . $res->get_error_message();
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$this->success = false;
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} else {
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$this->headers = wp_remote_retrieve_headers( $res );
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$this->body = wp_remote_retrieve_body( $res );
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$this->status_code = wp_remote_retrieve_response_code( $res );
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}
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} else {
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$this->error = '';
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$this->success = false;
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}
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}
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}
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/**
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* Core class used to implement SimpliePie feed sanitization.
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*
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* Extends the SimplePie_Sanitize class to use KSES, because
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* we cannot universally count on DOMDocument being available.
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*
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* @since 3.5.0
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*
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* @see SimplePie_Sanitize
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*/
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class WP_SimplePie_Sanitize_KSES extends SimplePie_Sanitize {
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/**
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* WordPress SimplePie sanitization using KSES.
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*
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* Sanitizes the incoming data, to ensure that it matches the type of data expected, using KSES.
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*
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* @since 3.5.0
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* @access public
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*
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* @param mixed $data The data that needs to be sanitized.
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* @param integer $type The type of data that it's supposed to be.
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* @param string $base Optional. The `xml:base` value to use when converting relative
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* URLs to absolute ones. Default empty.
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* @return mixed Sanitized data.
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*/
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public function sanitize( $data, $type, $base = '' ) {
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$data = trim( $data );
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if ( $type & SIMPLEPIE_CONSTRUCT_MAYBE_HTML ) {
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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 . '>)/', $data)) {
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$type |= SIMPLEPIE_CONSTRUCT_HTML;
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}
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else {
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$type |= SIMPLEPIE_CONSTRUCT_TEXT;
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}
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}
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if ( $type & SIMPLEPIE_CONSTRUCT_BASE64 ) {
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$data = base64_decode( $data );
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}
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if ( $type & ( SIMPLEPIE_CONSTRUCT_HTML | SIMPLEPIE_CONSTRUCT_XHTML ) ) {
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$data = wp_kses_post( $data );
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if ( $this->output_encoding !== 'UTF-8' ) {
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$data = $this->registry->call( 'Misc', 'change_encoding', array( $data, 'UTF-8', $this->output_encoding ) );
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}
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return $data;
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} else {
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return parent::sanitize( $data, $type, $base );
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}
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}
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}
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