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, 185 insertions, 0 deletions

diff --git a/wp-includes/widgets/class-wp-widget-rss.php b/wp-includes/widgets/class-wp-widget-rss.php
new file mode 100644
index 0000000..a4a1b19
--- /dev/null
+++ b/wp-includes/widgets/class-wp-widget-rss.php
@@ -0,0 +1,185 @@
+<?php
+/**
+ * Widget API: WP_Widget_RSS class
+ *
+ * @package WordPress
+ * @subpackage Widgets
+ * @since 4.4.0
+ */
+
+/**
+ * Core class used to implement a RSS widget.
+ *
+ * @since 2.8.0
+ *
+ * @see WP_Widget
+ */
+class WP_Widget_RSS extends WP_Widget {
+
+	/**
+	 * Sets up a new RSS widget instance.
+	 *
+	 * @since 2.8.0
+	 */
+	public function __construct() {
+		$widget_ops = array(
+			'description'                 => __( 'Entries from any RSS or Atom feed.' ),
+			'customize_selective_refresh' => true,
+			'show_instance_in_rest'       => true,
+
+		);
+		$control_ops = array(
+			'width'  => 400,
+			'height' => 200,
+		);
+		parent::__construct( 'rss', __( 'RSS' ), $widget_ops, $control_ops );
+	}
+
+	/**
+	 * Outputs the content for the current RSS widget instance.
+	 *
+	 * @since 2.8.0
+	 *
+	 * @param array $args     Display arguments including 'before_title', 'after_title',
+	 *                        'before_widget', and 'after_widget'.
+	 * @param array $instance Settings for the current RSS widget instance.
+	 */
+	public function widget( $args, $instance ) {
+		if ( isset( $instance['error'] ) && $instance['error'] ) {
+			return;
+		}
+
+		$url = ! empty( $instance['url'] ) ? $instance['url'] : '';
+		while ( ! empty( $url ) && stristr( $url, 'http' ) !== $url ) {
+			$url = substr( $url, 1 );
+		}
+
+		if ( empty( $url ) ) {
+			return;
+		}
+
+		// Self-URL destruction sequence.
+		if ( in_array( untrailingslashit( $url ), array( site_url(), home_url() ), true ) ) {
+			return;
+		}
+
+		$rss   = fetch_feed( $url );
+		$title = $instance['title'];
+		$desc  = '';
+		$link  = '';
+
+		if ( ! is_wp_error( $rss ) ) {
+			$desc = esc_attr( strip_tags( html_entity_decode( $rss->get_description(), ENT_QUOTES, get_option( 'blog_charset' ) ) ) );
+			if ( empty( $title ) ) {
+				$title = strip_tags( $rss->get_title() );
+			}
+			$link = strip_tags( $rss->get_permalink() );
+			while ( ! empty( $link ) && stristr( $link, 'http' ) !== $link ) {
+				$link = substr( $link, 1 );
+			}
+		}
+
+		if ( empty( $title ) ) {
+			$title = ! empty( $desc ) ? $desc : __( 'Unknown Feed' );
+		}
+
+		/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */
+		$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );
+
+		if ( $title ) {
+			$feed_link = '';
+			$feed_url  = strip_tags( $url );
+			$feed_icon = includes_url( 'images/rss.png' );
+			$feed_link = sprintf(
+				'<a class="rsswidget rss-widget-feed" href="%1$s"><img class="rss-widget-icon" style="border:0" width="14" height="14" src="%2$s" alt="%3$s"%4$s /></a> ',
+				esc_url( $feed_url ),
+				esc_url( $feed_icon ),
+				esc_attr__( 'RSS' ),
+				( wp_lazy_loading_enabled( 'img', 'rss_widget_feed_icon' ) ? ' loading="lazy"' : '' )
+			);
+
+			/**
+			 * Filters the classic RSS widget's feed icon link.
+			 *
+			 * Themes can remove the icon link by using `add_filter( 'rss_widget_feed_link', '__return_empty_string' );`.
+			 *
+			 * @since 5.9.0
+			 *
+			 * @param string|false $feed_link HTML for link to RSS feed.
+			 * @param array        $instance  Array of settings for the current widget.
+			 */
+			$feed_link = apply_filters( 'rss_widget_feed_link', $feed_link, $instance );
+
+			$title = $feed_link . '<a class="rsswidget rss-widget-title" href="' . esc_url( $link ) . '">' . esc_html( $title ) . '</a>';
+		}
+
+		echo $args['before_widget'];
+		if ( $title ) {
+			echo $args['before_title'] . $title . $args['after_title'];
+		}
+
+		$format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml';
+
+		/** This filter is documented in wp-includes/widgets/class-wp-nav-menu-widget.php */
+		$format = apply_filters( 'navigation_widgets_format', $format );
+
+		if ( 'html5' === $format ) {
+			// The title may be filtered: Strip out HTML and make sure the aria-label is never empty.
+			$title      = trim( strip_tags( $title ) );
+			$aria_label = $title ? $title : __( 'RSS Feed' );
+			echo '<nav aria-label="' . esc_attr( $aria_label ) . '">';
+		}
+
+		wp_widget_rss_output( $rss, $instance );
+
+		if ( 'html5' === $format ) {
+			echo '</nav>';
+		}
+
+		echo $args['after_widget'];
+
+		if ( ! is_wp_error( $rss ) ) {
+			$rss->__destruct();
+		}
+		unset( $rss );
+	}
+
+	/**
+	 * Handles updating settings for the current RSS widget instance.
+	 *
+	 * @since 2.8.0
+	 *
+	 * @param array $new_instance New settings for this instance as input by the user via
+	 *                            WP_Widget::form().
+	 * @param array $old_instance Old settings for this instance.
+	 * @return array Updated settings to save.
+	 */
+	public function update( $new_instance, $old_instance ) {
+		$testurl = ( isset( $new_instance['url'] ) && ( ! isset( $old_instance['url'] ) || ( $new_instance['url'] !== $old_instance['url'] ) ) );
+		return wp_widget_rss_process( $new_instance, $testurl );
+	}
+
+	/**
+	 * Outputs the settings form for the RSS widget.
+	 *
+	 * @since 2.8.0
+	 *
+	 * @param array $instance Current settings.
+	 */
+	public function form( $instance ) {
+		if ( empty( $instance ) ) {
+			$instance = array(
+				'title'        => '',
+				'url'          => '',
+				'items'        => 10,
+				'error'        => false,
+				'show_summary' => 0,
+				'show_author'  => 0,
+				'show_date'    => 0,
+			);
+		}
+		$instance['number'] = $this->number;
+
+		wp_widget_rss_form( $instance );
+	}
+}