Adding upstream version 6.4.3+dfsg1.upstream/6.4.3+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 947 insertions, 0 deletions

diff --git a/wp-includes/rss.php b/wp-includes/rss.php
new file mode 100644
index 0000000..6d8941a
--- /dev/null
+++ b/wp-includes/rss.php
@@ -0,0 +1,947 @@
+<?php
+/**
+ * MagpieRSS: a simple RSS integration tool
+ *
+ * A compiled file for RSS syndication
+ *
+ * @author Kellan Elliott-McCrea <kellan@protest.net>
+ * @version 0.51
+ * @license GPL
+ *
+ * @package External
+ * @subpackage MagpieRSS
+ * @deprecated 3.0.0 Use SimplePie instead.
+ */
+
+/**
+ * Deprecated. Use SimplePie (class-simplepie.php) instead.
+ */
+_deprecated_file( basename( __FILE__ ), '3.0.0', WPINC . '/class-simplepie.php' );
+
+/**
+ * Fires before MagpieRSS is loaded, to optionally replace it.
+ *
+ * @since 2.3.0
+ * @deprecated 3.0.0
+ */
+do_action( 'load_feed_engine' );
+
+/** RSS feed constant. */
+define('RSS', 'RSS');
+define('ATOM', 'Atom');
+define('MAGPIE_USER_AGENT', 'WordPress/' . $GLOBALS['wp_version']);
+
+class MagpieRSS {
+	var $parser;
+	var $current_item	= array();	// item currently being parsed
+	var $items			= array();	// collection of parsed items
+	var $channel		= array();	// hash of channel fields
+	var $textinput		= array();
+	var $image			= array();
+	var $feed_type;
+	var $feed_version;
+
+	// parser variables
+	var $stack				= array(); // parser stack
+	var $inchannel			= false;
+	var $initem 			= false;
+	var $incontent			= false; // if in Atom <content mode="xml"> field
+	var $intextinput		= false;
+	var $inimage 			= false;
+	var $current_field		= '';
+	var $current_namespace	= false;
+
+	//var $ERROR = "";
+
+	var $_CONTENT_CONSTRUCTS = array('content', 'summary', 'info', 'title', 'tagline', 'copyright');
+
+	/**
+	 * PHP5 constructor.
+	 */
+	function __construct( $source ) {
+
+		# Check if PHP xml isn't compiled
+		#
+		if ( ! function_exists('xml_parser_create') ) {
+			return trigger_error( "PHP's XML extension is not available. Please contact your hosting provider to enable PHP's XML extension." );
+		}
+
+		$parser = xml_parser_create();
+
+		$this->parser = $parser;
+
+		# pass in parser, and a reference to this object
+		# set up handlers
+		#
+		xml_set_object( $this->parser, $this );
+		xml_set_element_handler($this->parser,
+				'feed_start_element', 'feed_end_element' );
+
+		xml_set_character_data_handler( $this->parser, 'feed_cdata' );
+
+		$status = xml_parse( $this->parser, $source );
+
+		if (! $status ) {
+			$errorcode = xml_get_error_code( $this->parser );
+			if ( $errorcode != XML_ERROR_NONE ) {
+				$xml_error = xml_error_string( $errorcode );
+				$error_line = xml_get_current_line_number($this->parser);
+				$error_col = xml_get_current_column_number($this->parser);
+				$errormsg = "$xml_error at line $error_line, column $error_col";
+
+				$this->error( $errormsg );
+			}
+		}
+
+		xml_parser_free( $this->parser );
+		unset( $this->parser );
+
+		$this->normalize();
+	}
+
+	/**
+	 * PHP4 constructor.
+	 */
+	public function MagpieRSS( $source ) {
+		self::__construct( $source );
+	}
+
+	function feed_start_element($p, $element, &$attrs) {
+		$el = $element = strtolower($element);
+		$attrs = array_change_key_case($attrs, CASE_LOWER);
+
+		// check for a namespace, and split if found
+		$ns	= false;
+		if ( strpos( $element, ':' ) ) {
+			list($ns, $el) = explode( ':', $element, 2);
+		}
+		if ( $ns and $ns != 'rdf' ) {
+			$this->current_namespace = $ns;
+		}
+
+		# if feed type isn't set, then this is first element of feed
+		# identify feed from root element
+		#
+		if (!isset($this->feed_type) ) {
+			if ( $el == 'rdf' ) {
+				$this->feed_type = RSS;
+				$this->feed_version = '1.0';
+			}
+			elseif ( $el == 'rss' ) {
+				$this->feed_type = RSS;
+				$this->feed_version = $attrs['version'];
+			}
+			elseif ( $el == 'feed' ) {
+				$this->feed_type = ATOM;
+				$this->feed_version = $attrs['version'];
+				$this->inchannel = true;
+			}
+			return;
+		}
+
+		if ( $el == 'channel' )
+		{
+			$this->inchannel = true;
+		}
+		elseif ($el == 'item' or $el == 'entry' )
+		{
+			$this->initem = true;
+			if ( isset($attrs['rdf:about']) ) {
+				$this->current_item['about'] = $attrs['rdf:about'];
+			}
+		}
+
+		// if we're in the default namespace of an RSS feed,
+		//  record textinput or image fields
+		elseif (
+			$this->feed_type == RSS and
+			$this->current_namespace == '' and
+			$el == 'textinput' )
+		{
+			$this->intextinput = true;
+		}
+
+		elseif (
+			$this->feed_type == RSS and
+			$this->current_namespace == '' and
+			$el == 'image' )
+		{
+			$this->inimage = true;
+		}
+
+		# handle atom content constructs
+		elseif ( $this->feed_type == ATOM and in_array($el, $this->_CONTENT_CONSTRUCTS) )
+		{
+			// avoid clashing w/ RSS mod_content
+			if ($el == 'content' ) {
+				$el = 'atom_content';
+			}
+
+			$this->incontent = $el;
+
+		}
+
+		// if inside an Atom content construct (e.g. content or summary) field treat tags as text
+		elseif ($this->feed_type == ATOM and $this->incontent )
+		{
+			// if tags are inlined, then flatten
+			$attrs_str = join(' ',
+					array_map(array('MagpieRSS', 'map_attrs'),
+					array_keys($attrs),
+					array_values($attrs) ) );
+
+			$this->append_content( "<$element $attrs_str>"  );
+
+			array_unshift( $this->stack, $el );
+		}
+
+		// Atom support many links per containing element.
+		// Magpie treats link elements of type rel='alternate'
+		// as being equivalent to RSS's simple link element.
+		//
+		elseif ($this->feed_type == ATOM and $el == 'link' )
+		{
+			if ( isset($attrs['rel']) and $attrs['rel'] == 'alternate' )
+			{
+				$link_el = 'link';
+			}
+			else {
+				$link_el = 'link_' . $attrs['rel'];
+			}
+
+			$this->append($link_el, $attrs['href']);
+		}
+		// set stack[0] to current element
+		else {
+			array_unshift($this->stack, $el);
+		}
+	}
+
+	function feed_cdata ($p, $text) {
+
+		if ($this->feed_type == ATOM and $this->incontent)
+		{
+			$this->append_content( $text );
+		}
+		else {
+			$current_el = join('_', array_reverse($this->stack));
+			$this->append($current_el, $text);
+		}
+	}
+
+	function feed_end_element ($p, $el) {
+		$el = strtolower($el);
+
+		if ( $el == 'item' or $el == 'entry' )
+		{
+			$this->items[] = $this->current_item;
+			$this->current_item = array();
+			$this->initem = false;
+		}
+		elseif ($this->feed_type == RSS and $this->current_namespace == '' and $el == 'textinput' )
+		{
+			$this->intextinput = false;
+		}
+		elseif ($this->feed_type == RSS and $this->current_namespace == '' and $el == 'image' )
+		{
+			$this->inimage = false;
+		}
+		elseif ($this->feed_type == ATOM and in_array($el, $this->_CONTENT_CONSTRUCTS) )
+		{
+			$this->incontent = false;
+		}
+		elseif ($el == 'channel' or $el == 'feed' )
+		{
+			$this->inchannel = false;
+		}
+		elseif ($this->feed_type == ATOM and $this->incontent  ) {
+			// balance tags properly
+			// note: This may not actually be necessary
+			if ( $this->stack[0] == $el )
+			{
+				$this->append_content("</$el>");
+			}
+			else {
+				$this->append_content("<$el />");
+			}
+
+			array_shift( $this->stack );
+		}
+		else {
+			array_shift( $this->stack );
+		}
+
+		$this->current_namespace = false;
+	}
+
+	function concat (&$str1, $str2="") {
+		if (!isset($str1) ) {
+			$str1="";
+		}
+		$str1 .= $str2;
+	}
+
+	function append_content($text) {
+		if ( $this->initem ) {
+			$this->concat( $this->current_item[ $this->incontent ], $text );
+		}
+		elseif ( $this->inchannel ) {
+			$this->concat( $this->channel[ $this->incontent ], $text );
+		}
+	}
+
+	// smart append - field and namespace aware
+	function append($el, $text) {
+		if (!$el) {
+			return;
+		}
+		if ( $this->current_namespace )
+		{
+			if ( $this->initem ) {
+				$this->concat(
+					$this->current_item[ $this->current_namespace ][ $el ], $text);
+			}
+			elseif ($this->inchannel) {
+				$this->concat(
+					$this->channel[ $this->current_namespace][ $el ], $text );
+			}
+			elseif ($this->intextinput) {
+				$this->concat(
+					$this->textinput[ $this->current_namespace][ $el ], $text );
+			}
+			elseif ($this->inimage) {
+				$this->concat(
+					$this->image[ $this->current_namespace ][ $el ], $text );
+			}
+		}
+		else {
+			if ( $this->initem ) {
+				$this->concat(
+					$this->current_item[ $el ], $text);
+			}
+			elseif ($this->intextinput) {
+				$this->concat(
+					$this->textinput[ $el ], $text );
+			}
+			elseif ($this->inimage) {
+				$this->concat(
+					$this->image[ $el ], $text );
+			}
+			elseif ($this->inchannel) {
+				$this->concat(
+					$this->channel[ $el ], $text );
+			}
+
+		}
+	}
+
+	function normalize () {
+		// if atom populate rss fields
+		if ( $this->is_atom() ) {
+			$this->channel['description'] = $this->channel['tagline'];
+			for ( $i = 0; $i < count($this->items); $i++) {
+				$item = $this->items[$i];
+				if ( isset($item['summary']) )
+					$item['description'] = $item['summary'];
+				if ( isset($item['atom_content']))
+					$item['content']['encoded'] = $item['atom_content'];
+
+				$this->items[$i] = $item;
+			}
+		}
+		elseif ( $this->is_rss() ) {
+			$this->channel['tagline'] = $this->channel['description'];
+			for ( $i = 0; $i < count($this->items); $i++) {
+				$item = $this->items[$i];
+				if ( isset($item['description']))
+					$item['summary'] = $item['description'];
+				if ( isset($item['content']['encoded'] ) )
+					$item['atom_content'] = $item['content']['encoded'];
+
+				$this->items[$i] = $item;
+			}
+		}
+	}
+
+	function is_rss () {
+		if ( $this->feed_type == RSS ) {
+			return $this->feed_version;
+		}
+		else {
+			return false;
+		}
+	}
+
+	function is_atom() {
+		if ( $this->feed_type == ATOM ) {
+			return $this->feed_version;
+		}
+		else {
+			return false;
+		}
+	}
+
+	function map_attrs($k, $v) {
+		return "$k=\"$v\"";
+	}
+
+	function error( $errormsg, $lvl = E_USER_WARNING ) {
+		if ( MAGPIE_DEBUG ) {
+			trigger_error( $errormsg, $lvl);
+		} else {
+			error_log( $errormsg, 0);
+		}
+	}
+
+}
+
+if ( !function_exists('fetch_rss') ) :
+/**
+ * Build Magpie object based on RSS from URL.
+ *
+ * @since 1.5.0
+ * @package External
+ * @subpackage MagpieRSS
+ *
+ * @param string $url URL to retrieve feed.
+ * @return MagpieRSS|false MagpieRSS object on success, false on failure.
+ */
+function fetch_rss ($url) {
+	// initialize constants
+	init();
+
+	if ( !isset($url) ) {
+		// error("fetch_rss called without a url");
+		return false;
+	}
+
+	// if cache is disabled
+	if ( !MAGPIE_CACHE_ON ) {
+		// fetch file, and parse it
+		$resp = _fetch_remote_file( $url );
+		if ( is_success( $resp->status ) ) {
+			return _response_to_rss( $resp );
+		}
+		else {
+			// error("Failed to fetch $url and cache is off");
+			return false;
+		}
+	}
+	// else cache is ON
+	else {
+		// Flow
+		// 1. check cache
+		// 2. if there is a hit, make sure it's fresh
+		// 3. if cached obj fails freshness check, fetch remote
+		// 4. if remote fails, return stale object, or error
+
+		$cache = new RSSCache( MAGPIE_CACHE_DIR, MAGPIE_CACHE_AGE );
+
+		if (MAGPIE_DEBUG and $cache->ERROR) {
+			debug($cache->ERROR, E_USER_WARNING);
+		}
+
+		$cache_status 	 = 0;		// response of check_cache
+		$request_headers = array(); // HTTP headers to send with fetch
+		$rss 			 = 0;		// parsed RSS object
+		$errormsg		 = 0;		// errors, if any
+
+		if (!$cache->ERROR) {
+			// return cache HIT, MISS, or STALE
+			$cache_status = $cache->check_cache( $url );
+		}
+
+		// if object cached, and cache is fresh, return cached obj
+		if ( $cache_status == 'HIT' ) {
+			$rss = $cache->get( $url );
+			if ( isset($rss) and $rss ) {
+				$rss->from_cache = 1;
+				if ( MAGPIE_DEBUG > 1) {
+				debug("MagpieRSS: Cache HIT", E_USER_NOTICE);
+			}
+				return $rss;
+			}
+		}
+
+		// else attempt a conditional get
+
+		// set up headers
+		if ( $cache_status == 'STALE' ) {
+			$rss = $cache->get( $url );
+			if ( isset($rss->etag) and $rss->last_modified ) {
+				$request_headers['If-None-Match'] = $rss->etag;
+				$request_headers['If-Last-Modified'] = $rss->last_modified;
+			}
+		}
+
+		$resp = _fetch_remote_file( $url, $request_headers );
+
+		if (isset($resp) and $resp) {
+			if ($resp->status == '304' ) {
+				// we have the most current copy
+				if ( MAGPIE_DEBUG > 1) {
+					debug("Got 304 for $url");
+				}
+				// reset cache on 304 (at minutillo insistent prodding)
+				$cache->set($url, $rss);
+				return $rss;
+			}
+			elseif ( is_success( $resp->status ) ) {
+				$rss = _response_to_rss( $resp );
+				if ( $rss ) {
+					if (MAGPIE_DEBUG > 1) {
+						debug("Fetch successful");
+					}
+					// add object to cache
+					$cache->set( $url, $rss );
+					return $rss;
+				}
+			}
+			else {
+				$errormsg = "Failed to fetch $url. ";
+				if ( $resp->error ) {
+					# compensate for Snoopy's annoying habit to tacking
+					# on '\n'
+					$http_error = substr($resp->error, 0, -2);
+					$errormsg .= "(HTTP Error: $http_error)";
+				}
+				else {
+					$errormsg .=  "(HTTP Response: " . $resp->response_code .')';
+				}
+			}
+		}
+		else {
+			$errormsg = "Unable to retrieve RSS file for unknown reasons.";
+		}
+
+		// else fetch failed
+
+		// attempt to return cached object
+		if ($rss) {
+			if ( MAGPIE_DEBUG ) {
+				debug("Returning STALE object for $url");
+			}
+			return $rss;
+		}
+
+		// else we totally failed
+		// error( $errormsg );
+
+		return false;
+
+	} // end if ( !MAGPIE_CACHE_ON ) {
+} // end fetch_rss()
+endif;
+
+/**
+ * Retrieve URL headers and content using WP HTTP Request API.
+ *
+ * @since 1.5.0
+ * @package External
+ * @subpackage MagpieRSS
+ *
+ * @param string $url URL to retrieve
+ * @param array $headers Optional. Headers to send to the URL. Default empty string.
+ * @return Snoopy style response
+ */
+function _fetch_remote_file($url, $headers = "" ) {
+	$resp = wp_safe_remote_request( $url, array( 'headers' => $headers, 'timeout' => MAGPIE_FETCH_TIME_OUT ) );
+	if ( is_wp_error($resp) ) {
+		$error = array_shift($resp->errors);
+
+		$resp = new stdClass;
+		$resp->status = 500;
+		$resp->response_code = 500;
+		$resp->error = $error[0] . "\n"; //\n = Snoopy compatibility
+		return $resp;
+	}
+
+	// Snoopy returns headers unprocessed.
+	// Also note, WP_HTTP lowercases all keys, Snoopy did not.
+	$return_headers = array();
+	foreach ( wp_remote_retrieve_headers( $resp ) as $key => $value ) {
+		if ( !is_array($value) ) {
+			$return_headers[] = "$key: $value";
+		} else {
+			foreach ( $value as $v )
+				$return_headers[] = "$key: $v";
+		}
+	}
+
+	$response = new stdClass;
+	$response->status = wp_remote_retrieve_response_code( $resp );
+	$response->response_code = wp_remote_retrieve_response_code( $resp );
+	$response->headers = $return_headers;
+	$response->results = wp_remote_retrieve_body( $resp );
+
+	return $response;
+}
+
+/**
+ * Retrieve
+ *
+ * @since 1.5.0
+ * @package External
+ * @subpackage MagpieRSS
+ *
+ * @param array $resp
+ * @return MagpieRSS|bool
+ */
+function _response_to_rss ($resp) {
+	$rss = new MagpieRSS( $resp->results );
+
+	// if RSS parsed successfully
+	if ( $rss && (!isset($rss->ERROR) || !$rss->ERROR) ) {
+
+		// find Etag, and Last-Modified
+		foreach ( (array) $resp->headers as $h) {
+			// 2003-03-02 - Nicola Asuni (www.tecnick.com) - fixed bug "Undefined offset: 1"
+			if (strpos($h, ": ")) {
+				list($field, $val) = explode(": ", $h, 2);
+			}
+			else {
+				$field = $h;
+				$val = "";
+			}
+
+			if ( $field == 'etag' ) {
+				$rss->etag = $val;
+			}
+
+			if ( $field == 'last-modified' ) {
+				$rss->last_modified = $val;
+			}
+		}
+
+		return $rss;
+	} // else construct error message
+	else {
+		$errormsg = "Failed to parse RSS file.";
+
+		if ($rss) {
+			$errormsg .= " (" . $rss->ERROR . ")";
+		}
+		// error($errormsg);
+
+		return false;
+	} // end if ($rss and !$rss->error)
+}
+
+/**
+ * Set up constants with default values, unless user overrides.
+ *
+ * @since 1.5.0
+ * @package External
+ * @subpackage MagpieRSS
+ */
+function init () {
+	if ( defined('MAGPIE_INITALIZED') ) {
+		return;
+	}
+	else {
+		define('MAGPIE_INITALIZED', 1);
+	}
+
+	if ( !defined('MAGPIE_CACHE_ON') ) {
+		define('MAGPIE_CACHE_ON', 1);
+	}
+
+	if ( !defined('MAGPIE_CACHE_DIR') ) {
+		define('MAGPIE_CACHE_DIR', './cache');
+	}
+
+	if ( !defined('MAGPIE_CACHE_AGE') ) {
+		define('MAGPIE_CACHE_AGE', 60*60); // one hour
+	}
+
+	if ( !defined('MAGPIE_CACHE_FRESH_ONLY') ) {
+		define('MAGPIE_CACHE_FRESH_ONLY', 0);
+	}
+
+		if ( !defined('MAGPIE_DEBUG') ) {
+		define('MAGPIE_DEBUG', 0);
+	}
+
+	if ( !defined('MAGPIE_USER_AGENT') ) {
+		$ua = 'WordPress/' . $GLOBALS['wp_version'];
+
+		if ( MAGPIE_CACHE_ON ) {
+			$ua = $ua . ')';
+		}
+		else {
+			$ua = $ua . '; No cache)';
+		}
+
+		define('MAGPIE_USER_AGENT', $ua);
+	}
+
+	if ( !defined('MAGPIE_FETCH_TIME_OUT') ) {
+		define('MAGPIE_FETCH_TIME_OUT', 2);	// 2 second timeout
+	}
+
+	// use gzip encoding to fetch rss files if supported?
+	if ( !defined('MAGPIE_USE_GZIP') ) {
+		define('MAGPIE_USE_GZIP', true);
+	}
+}
+
+function is_info ($sc) {
+	return $sc >= 100 && $sc < 200;
+}
+
+function is_success ($sc) {
+	return $sc >= 200 && $sc < 300;
+}
+
+function is_redirect ($sc) {
+	return $sc >= 300 && $sc < 400;
+}
+
+function is_error ($sc) {
+	return $sc >= 400 && $sc < 600;
+}
+
+function is_client_error ($sc) {
+	return $sc >= 400 && $sc < 500;
+}
+
+function is_server_error ($sc) {
+	return $sc >= 500 && $sc < 600;
+}
+
+class RSSCache {
+	var $BASE_CACHE;	// where the cache files are stored
+	var $MAX_AGE	= 43200;  		// when are files stale, default twelve hours
+	var $ERROR 		= '';			// accumulate error messages
+
+	/**
+	 * PHP5 constructor.
+	 */
+	function __construct( $base = '', $age = '' ) {
+		$this->BASE_CACHE = WP_CONTENT_DIR . '/cache';
+		if ( $base ) {
+			$this->BASE_CACHE = $base;
+		}
+		if ( $age ) {
+			$this->MAX_AGE = $age;
+		}
+
+	}
+
+	/**
+	 * PHP4 constructor.
+	 */
+	public function RSSCache( $base = '', $age = '' ) {
+		self::__construct( $base, $age );
+	}
+
+/*=======================================================================*\
+	Function:	set
+	Purpose:	add an item to the cache, keyed on url
+	Input:		url from which the rss file was fetched
+	Output:		true on success
+\*=======================================================================*/
+	function set ($url, $rss) {
+		$cache_option = 'rss_' . $this->file_name( $url );
+
+		set_transient($cache_option, $rss, $this->MAX_AGE);
+
+		return $cache_option;
+	}
+
+/*=======================================================================*\
+	Function:	get
+	Purpose:	fetch an item from the cache
+	Input:		url from which the rss file was fetched
+	Output:		cached object on HIT, false on MISS
+\*=======================================================================*/
+	function get ($url) {
+		$this->ERROR = "";
+		$cache_option = 'rss_' . $this->file_name( $url );
+
+		if ( ! $rss = get_transient( $cache_option ) ) {
+			$this->debug(
+				"Cache does not contain: $url (cache option: $cache_option)"
+			);
+			return 0;
+		}
+
+		return $rss;
+	}
+
+/*=======================================================================*\
+	Function:	check_cache
+	Purpose:	check a url for membership in the cache
+				and whether the object is older then MAX_AGE (ie. STALE)
+	Input:		url from which the rss file was fetched
+	Output:		cached object on HIT, false on MISS
+\*=======================================================================*/
+	function check_cache ( $url ) {
+		$this->ERROR = "";
+		$cache_option = 'rss_' . $this->file_name( $url );
+
+		if ( get_transient($cache_option) ) {
+			// object exists and is current
+				return 'HIT';
+		} else {
+			// object does not exist
+			return 'MISS';
+		}
+	}
+
+/*=======================================================================*\
+	Function:	serialize
+\*=======================================================================*/
+	function serialize ( $rss ) {
+		return serialize( $rss );
+	}
+
+/*=======================================================================*\
+	Function:	unserialize
+\*=======================================================================*/
+	function unserialize ( $data ) {
+		return unserialize( $data );
+	}
+
+/*=======================================================================*\
+	Function:	file_name
+	Purpose:	map url to location in cache
+	Input:		url from which the rss file was fetched
+	Output:		a file name
+\*=======================================================================*/
+	function file_name ($url) {
+		return md5( $url );
+	}
+
+/*=======================================================================*\
+	Function:	error
+	Purpose:	register error
+\*=======================================================================*/
+	function error ($errormsg, $lvl=E_USER_WARNING) {
+		$this->ERROR = $errormsg;
+		if ( MAGPIE_DEBUG ) {
+			trigger_error( $errormsg, $lvl);
+		}
+		else {
+			error_log( $errormsg, 0);
+		}
+	}
+			function debug ($debugmsg, $lvl=E_USER_NOTICE) {
+		if ( MAGPIE_DEBUG ) {
+			$this->error("MagpieRSS [debug] $debugmsg", $lvl);
+		}
+	}
+}
+
+if ( !function_exists('parse_w3cdtf') ) :
+function parse_w3cdtf ( $date_str ) {
+
+	# regex to match W3C date/time formats
+	$pat = "/(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2})(:(\d{2}))?(?:([-+])(\d{2}):?(\d{2})|(Z))?/";
+
+	if ( preg_match( $pat, $date_str, $match ) ) {
+		list( $year, $month, $day, $hours, $minutes, $seconds) =
+			array( $match[1], $match[2], $match[3], $match[4], $match[5], $match[7]);
+
+		# calc epoch for current date assuming GMT
+		$epoch = gmmktime( $hours, $minutes, $seconds, $month, $day, $year);
+
+		$offset = 0;
+		if ( $match[11] == 'Z' ) {
+			# zulu time, aka GMT
+		}
+		else {
+			list( $tz_mod, $tz_hour, $tz_min ) =
+				array( $match[8], $match[9], $match[10]);
+
+			# zero out the variables
+			if ( ! $tz_hour ) { $tz_hour = 0; }
+			if ( ! $tz_min ) { $tz_min = 0; }
+
+			$offset_secs = (($tz_hour*60)+$tz_min)*60;
+
+			# is timezone ahead of GMT?  then subtract offset
+			#
+			if ( $tz_mod == '+' ) {
+				$offset_secs = $offset_secs * -1;
+			}
+
+			$offset = $offset_secs;
+		}
+		$epoch = $epoch + $offset;
+		return $epoch;
+	}
+	else {
+		return -1;
+	}
+}
+endif;
+
+if ( !function_exists('wp_rss') ) :
+/**
+ * Display all RSS items in a HTML ordered list.
+ *
+ * @since 1.5.0
+ * @package External
+ * @subpackage MagpieRSS
+ *
+ * @param string $url URL of feed to display. Will not auto sense feed URL.
+ * @param int $num_items Optional. Number of items to display, default is all.
+ */
+function wp_rss( $url, $num_items = -1 ) {
+	if ( $rss = fetch_rss( $url ) ) {
+		echo '<ul>';
+
+		if ( $num_items !== -1 ) {
+			$rss->items = array_slice( $rss->items, 0, $num_items );
+		}
+
+		foreach ( (array) $rss->items as $item ) {
+			printf(
+				'<li><a href="%1$s" title="%2$s">%3$s</a></li>',
+				esc_url( $item['link'] ),
+				esc_attr( strip_tags( $item['description'] ) ),
+				esc_html( $item['title'] )
+			);
+		}
+
+		echo '</ul>';
+	} else {
+		_e( 'An error has occurred, which probably means the feed is down. Try again later.' );
+	}
+}
+endif;
+
+if ( !function_exists('get_rss') ) :
+/**
+ * Display RSS items in HTML list items.
+ *
+ * You have to specify which HTML list you want, either ordered or unordered
+ * before using the function. You also have to specify how many items you wish
+ * to display. You can't display all of them like you can with wp_rss()
+ * function.
+ *
+ * @since 1.5.0
+ * @package External
+ * @subpackage MagpieRSS
+ *
+ * @param string $url URL of feed to display. Will not auto sense feed URL.
+ * @param int $num_items Optional. Number of items to display, default is all.
+ * @return bool False on failure.
+ */
+function get_rss ($url, $num_items = 5) { // Like get posts, but for RSS
+	$rss = fetch_rss($url);
+	if ( $rss ) {
+		$rss->items = array_slice($rss->items, 0, $num_items);
+		foreach ( (array) $rss->items as $item ) {
+			echo "<li>\n";
+			echo "<a href='$item[link]' title='$item[description]'>";
+			echo esc_html($item['title']);
+			echo "</a><br />\n";
+			echo "</li>\n";
+		}
+	} else {
+		return false;
+	}
+}
+endif;