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function wp_admin_bar_site_menu( $wp_admin_bar ) {
	// Don't show for logged out users.
	if ( ! is_user_logged_in() ) {
		return;
	}

	// Show only when the user is a member of this site, or they're a super admin.
	if ( ! is_user_member_of_blog() && ! current_user_can( 'manage_network' ) ) {
		return;
	}

	$blogname = get_bloginfo( 'name' );

	if ( ! $blogname ) {
		$blogname = preg_replace( '#^(https?://)?(www\.)?#', '', get_home_url() );
	}

	if ( is_network_admin() ) {
		/* translators: %s: Site title. */
		$blogname = sprintf( __( 'Network Admin: %s' ), esc_html( get_network()->site_name ) );
	} elseif ( is_user_admin() ) {
		/* translators: %s: Site title. */
		$blogname = sprintf( __( 'User Dashboard: %s' ), esc_html( get_network()->site_name ) );
	}

	$title = wp_html_excerpt( $blogname, 40, '…' );
	$meta  = array(
		'menu_title' => $title,
	);

	if ( ! is_network_admin() && ! is_user_admin() ) {
		/** This filter is documented in wp-includes/admin-bar.php */
		$show_site_icons = apply_filters( 'wp_admin_bar_show_site_icons', true );

		if ( true === $show_site_icons && has_site_icon() ) {
			$site_icon_url    = get_site_icon_url( 32 );
			$site_icon_url_2x = get_site_icon_url( 64 );
			$srcset           = ( $site_icon_url_2x && $site_icon_url !== $site_icon_url_2x ) ? sprintf( ' srcset="%s 2x"', esc_url( $site_icon_url_2x ) ) : '';
			$site_icon        = sprintf(
				'<img class="site-icon" src="%s"%s alt="" width="20" height="20" />',
				esc_url( $site_icon_url ),
				$srcset
			);

			$title         = $site_icon . $title;
			$meta['class'] = 'has-site-icon';
		}
	}

	$wp_admin_bar->add_node(
		array(
			'id'    => 'site-name',
			'title' => $title,
			'href'  => ( is_admin() || ! current_user_can( 'read' ) ) ? home_url( '/' ) : admin_url(),
			'meta'  => $meta,
		)
	);

	// Create submenu items.

	if ( is_admin() ) {
		// Add an option to visit the site.
		$wp_admin_bar->add_node(
			array(
				'parent' => 'site-name',
				'id'     => 'view-site',
				'title'  => __( 'Visit Site' ),
				'href'   => home_url( '/' ),
			)
		);

		if ( is_blog_admin() && is_multisite() && current_user_can( 'manage_sites' ) ) {
			$wp_admin_bar->add_node(
				array(
					'parent' => 'site-name',
					'id'     => 'edit-site',
					'title'  => __( 'Manage Site' ),
					'href'   => network_admin_url( 'site-info.php?id=' . get_current_blog_id() ),
				)
			);
		}
	} elseif ( current_user_can( 'read' ) ) {
		// We're on the front end, link to the Dashboard.
		$wp_admin_bar->add_node(
			array(
				'parent' => 'site-name',
				'id'     => 'dashboard',
				'title'  => __( 'Dashboard' ),
				'href'   => admin_url(),
			)
		);

		// Add the appearance submenu items.
		wp_admin_bar_appearance_menu( $wp_admin_bar );

		// Add a Plugins link.
		if ( current_user_can( 'activate_plugins' ) ) {
			$wp_admin_bar->add_node(
				array(
					'parent' => 'site-name',
					'id'     => 'plugins',
					'title'  => __( 'Plugins' ),
					'href'   => admin_url( 'plugins.php' ),
				)
			);
		}
	}
}