From c3ed3b072e1b6838c34b34cf1d10744ff9093e08 Mon Sep 17 00:00:00 2001
From: Andrew Nacin <nacin@git.wordpress.org>
Date: Fri, 29 Apr 2011 14:44:43 +0000
Subject: [PATCH] Update the self-referential destruction sequence in
 WP_Widget_RSS to account for trailing slashes. TODO: Strengthen our
 validation here.

git-svn-id: https://develop.svn.wordpress.org/trunk@17765 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-admin/includes/dashboard.php | 30 ++++++++++++++++++++++++++----
 wp-includes/default-widgets.php |  2 +-
 2 files changed, 27 insertions(+), 5 deletions(-)

diff --git a/wp-admin/includes/dashboard.php b/wp-admin/includes/dashboard.php
index 2a96ceadc1..19186ee582 100644
--- a/wp-admin/includes/dashboard.php
+++ b/wp-admin/includes/dashboard.php
@@ -925,9 +925,17 @@ function wp_dashboard_plugins() {
  * @since 2.5.0
  */
 function wp_dashboard_plugins_output() {
-	$popular = fetch_feed( 'http://wordpress.org/extend/plugins/rss/browse/popular/' );
-	$new     = fetch_feed( 'http://wordpress.org/extend/plugins/rss/browse/new/' );
-	$updated = fetch_feed( 'http://wordpress.org/extend/plugins/rss/browse/updated/' );
+	ob_start();
+	$check_urls = array(
+		'http://wordpress.org/extend/plugins/rss/browse/popular/',
+		'http://wordpress.org/extend/plugins/rss/browse/new/',
+		'http://wordpress.org/extend/plugins/rss/browse/updated/'
+	);
+	$transient_key = __FUNCTION__ . serialize( '' ) . implode( '|', $check_urls );
+
+	$popular = fetch_feed( $check_urls[0] );
+	$new     = fetch_feed( $check_urls[1] );
+	$updated = fetch_feed( $check_urls[2] );
 
 	if ( false === $plugin_slugs = get_transient( 'plugin_slugs' ) ) {
 		$plugin_slugs = array_keys( get_plugins() );
@@ -998,6 +1006,7 @@ function wp_dashboard_plugins_output() {
 		$$feed->__destruct();
 		unset($$feed);
 	}
+	set_transient( $transient_key, ob_get_flush() );
 }
 
 /**
@@ -1018,10 +1027,13 @@ function wp_dashboard_plugins_output() {
 function wp_dashboard_cached_rss_widget( $widget_id, $callback, $check_urls = array() ) {
 	$loading = '<p class="widget-loading">' . __( 'Loading&#8230;' ) . '</p>';
 
+	$widgets = get_option( 'dashboard_widget_options' );
+	$output_cache = 'dashboard_' . md5( $callback . serialize( isset( $widgets[$widget_id] ) ? $widgets[$widget_id] : '' ) . implode( '|', $check_urls ) );
+
 	if ( empty($check_urls) ) {
-		$widgets = get_option( 'dashboard_widget_options' );
 		if ( empty($widgets[$widget_id]['url']) ) {
 			echo $loading;
+			delete_transient( $output_cache );
 			return false;
 		}
 		$check_urls = array( $widgets[$widget_id]['url'] );
@@ -1032,10 +1044,19 @@ function wp_dashboard_cached_rss_widget( $widget_id, $callback, $check_urls = ar
 		$cache = new WP_Feed_Cache_Transient('', md5($check_url), '');
 		if ( ! $cache->load() ) {
 			echo $loading;
+			delete_transient( $output_cache );
 			return false;
 		}
 	}
 
+	if ( false === $cache = get_transient( $output_cache ) ) {
+		echo $loading;
+		return false;
+	}
+
+	echo $cache;
+	return true;
+	/*		
 	if ( $callback && is_callable( $callback ) ) {
 		$args = array_slice( func_get_args(), 2 );
 		array_unshift( $args, $widget_id );
@@ -1043,6 +1064,7 @@ function wp_dashboard_cached_rss_widget( $widget_id, $callback, $check_urls = ar
 	}
 
 	return true;
+	*/
 }
 
 /* Dashboard Widgets Controls */
diff --git a/wp-includes/default-widgets.php b/wp-includes/default-widgets.php
index dc1c9ec880..81656a425e 100644
--- a/wp-includes/default-widgets.php
+++ b/wp-includes/default-widgets.php
@@ -713,7 +713,7 @@ class WP_Widget_RSS extends WP_Widget {
 			return;
 
 		// self-url destruction sequence
-		if ( $url == site_url() || $url == home_url() )
+		if ( in_array( untrailingslashit( $url ), array( site_url(), home_url() ) ) )
 			return;
 
 		$rss = fetch_feed($url);