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