__('The specified target URL cannot be used as a target. It either doesn\'t exist, or it is not a pingback-enabled resource.'));

		// Let's check that the remote site didn't already pingback this entry
		$wpdb->get_results("SELECT * FROM $wpdb->comments WHERE comment_post_ID = '$post_ID' AND comment_author_url = '$pagelinkedfrom'");

		if ( $wpdb->num_rows ) // We already have a Pingback from this URL
	  		return new IXR_Error(48, __('The pingback has already been registered.'));

		// very stupid, but gives time to the 'from' server to publish !
		sleep(1);

		// Let's check the remote site
		$linea = wp_remote_fopen( $pagelinkedfrom );
		if ( !$linea )
	  		return new IXR_Error(16, __('The source URL does not exist.'));

		$linea = apply_filters('pre_remote_source', $linea, $pagelinkedto);

		// Work around bug in strip_tags():
		$linea = str_replace('<!DOC', '<DOC', $linea);
		$linea = preg_replace( '/[\s\r\n\t]+/', ' ', $linea ); // normalize spaces
		$linea = preg_replace( "/ <(h1|h2|h3|h4|h5|h6|p|th|td|li|dt|dd|pre|caption|input|textarea|button|body)[^>]*>/", "\n\n", $linea );

		preg_match('|<title>([^<]*?)</title>|is', $linea, $matchtitle);
		$title = $matchtitle[1];
		if ( empty( $title ) )
			return new IXR_Error(32, __('We cannot find a title on that page.'));

		$linea = strip_tags( $linea, '<a>' ); // just keep the tag we need

		$p = explode( "\n\n", $linea );

		$preg_target = preg_quote($pagelinkedto);

		foreach ( $p as $para ) {
			if ( strpos($para, $pagelinkedto) !== false ) { // it exists, but is it a link?
				preg_match("|<a[^>]+?".$preg_target."[^>]*>([^>]+?)</a>|", $para, $context);

				// If the URL isn't in a link context, keep looking
				if ( empty($context) )
					continue;

				// We're going to use this fake tag to mark the context in a bit
				// the marker is needed in case the link text appears more than once in the paragraph
				$excerpt = preg_replace('|\</?wpcontext\>|', '', $para);

				// prevent really long link text
				if ( strlen($context[1]) > 100 )
					$context[1] = substr($context[1], 0, 100) . '...';

				$marker = '<wpcontext>'.$context[1].'</wpcontext>';    // set up our marker
				$excerpt= str_replace($context[0], $marker, $excerpt); // swap out the link for our marker
				$excerpt = strip_tags($excerpt, '<wpcontext>');        // strip all tags but our context marker
				$excerpt = trim($excerpt);
				$preg_marker = preg_quote($marker);
				$excerpt = preg_replace("|.*?\s(.{0,100}$preg_marker.{0,100})\s.*|s", '$1', $excerpt);
				$excerpt = strip_tags($excerpt); // YES, again, to remove the marker wrapper
				break;
			}
		}

		if ( empty($context) ) // Link to target not found
			return new IXR_Error(17, __('The source URL does not contain a link to the target URL, and so cannot be used as a source.'));

		$pagelinkedfrom = str_replace('&', '&amp;', $pagelinkedfrom);

		$context = '[...] ' . wp_specialchars( $excerpt ) . ' [...]';
		$pagelinkedfrom = $wpdb->escape( $pagelinkedfrom );

		$comment_post_ID = (int) $post_ID;
		$comment_author = $title;
		$this->escape($comment_author);
		$comment_author_url = $pagelinkedfrom;
		$comment_content = $context;
		$this->escape($comment_content);
		$comment_type = 'pingback';

		$commentdata = compact('comment_post_ID', 'comment_author', 'comment_author_url', 'comment_content', 'comment_type');

		$comment_ID = wp_new_comment($commentdata);
		do_action('pingback_post', $comment_ID);

		return sprintf(__('Pingback from %1$s to %2$s registered. Keep the web talking! :-)'), $pagelinkedfrom, $pagelinkedto);
	}


	/* pingback.extensions.getPingbacks returns an array of URLs
	that pingbacked the given URL
	specs on http://www.aquarionics.com/misc/archives/blogite/0198.html */
	function pingback_extensions_getPingbacks($args) {

		global $wpdb;

		do_action('xmlrpc_call', 'pingback.extensions.getPingsbacks');

		$this->escape($args);

		$url = $args;

		$post_ID = url_to_postid($url);
		if (!$post_ID) {
			// We aren't sure that the resource is available and/or pingback enabled
	  		return new IXR_Error(33, __('The specified target URL cannot be used as a target. It either doesn\'t exist, or it is not a pingback-enabled resource.'));
		}

		$actual_post = wp_get_single_post($post_ID, ARRAY_A);

		if (!$actual_post) {
			// No such post = resource not found
	  		return new IXR_Error(32, __('The specified target URL does not exist.'));
		}

		$comments = $wpdb->get_results("SELECT comment_author_url, comment_content, comment_author_IP, comment_type FROM $wpdb->comments WHERE comment_post_ID = $post_ID");

		if (!$comments) {
			return array();
		}

		$pingbacks = array();
		foreach($comments as $comment) {
			if ( 'pingback' == $comment->comment_type )
				$pingbacks[] = $comment->comment_author_url;
		}

		return $pingbacks;
	}
}


$wp_xmlrpc_server = new wp_xmlrpc_server();

?>