<?php
/**
* This file implements the webmention_plugin.
*
* For the most recent and complete Plugin API documentation
* see {@link Plugin} in ../evocore/_plugin.class.php.
*
* This file is part of the evoCore framework - {@link http://evocore.net/}
* See also {@link https://github.com/b2evolution/b2evolution}.
*
* @license GNU GPL v2 - {@link http://b2evolution.net/about/gnu-gpl-license}
*
* @copyright (c)2003-2020 by Francois Planque - {@link http://fplanque.com/}
*
* @package plugins
*/
if( !defined('EVO_MAIN_INIT') ) die( 'Please, do not access this page directly.' );
/**
* Webmention plugin.
*
* @package plugins
*/
class webmention_plugin extends Plugin
{
/**
* Variables below MUST be overriden by plugin implementations,
* either in the subclass declaration or in the subclass constructor.
*/
var $code = 'webmention';
var $priority = 50;
var $version = '6.10.6';
/*
* These variables MAY be overriden.
*/
var $group = 'ping';
var $number_of_installs = 1;
/**
* Init
*/
function PluginInit( & $params )
{
$this->name = T_('Webmentions plugin');
$this->short_desc = T_('Send webmentions to all URLs mentioned in a Post.');
$this->ping_service_name = 'Webmention';
$this->ping_service_note = T_('Send webmentions to all URLs mentioned in a Post.');
$this->ping_service_process_message = T_('Sending webmention pings to URLs mentioned in the post').'...';
$this->ping_service_setting_title = T_('Send webmentions');
}
/**
* Ping the detected url to send webmentions
*/
function ItemSendPing( & $params )
{
$Item = $params['Item'];
$check_urls = array();
if( preg_match_all( '#href="([^"]+)"#i', $Item->get_prerendered_content( 'htmlbody' ), $match_urls ) )
{ // Get URLs from the rendered item content:
$check_urls = $match_urls[1];
}
if( $Item->get( 'url' ) != '' )
{ // Also check item URL:
$check_urls[] = $Item->get( 'url' );
}
if( empty( $check_urls ) )
{ // No urls detected
return true;
}
$check_urls = array_unique( $check_urls );
// Initialize client to send webmentions:
require_once( __DIR__.'/MentionClient.php' );
$MentionClient = new IndieWeb\MentionClient();
$source_url = $Item->get_permanent_url( '', '', '&' );
$nosupport_urls = array();
$success_urls = array();
$failed_urls = array();
$skipped_urls = array();
foreach( $check_urls as $target_url )
{
if( is_same_url( $source_url, $target_url ) )
{ // If the posted URL is a permanent URL of the target Item:
$skipped_urls[] = get_link_tag( $target_url, '', '', 255 ).( empty( $response['body'] ) ? '' : ' (<code>'.T_('Permanent URL of this Item').'</code>)' );
continue;
}
if( ! $MentionClient->discoverWebmentionEndpoint( $target_url ) )
{ // The URL doesn't accept webmention:
$nosupport_urls[] = get_link_tag( $target_url, '', '', 255 );
continue;
}
if( ! ( $response = $MentionClient->sendWebmention( $source_url, $target_url, array( 'excerpt' => $Item->get( 'excerpt' ) ) ) ) ||
$response['code'] < 200 || $response['code'] > 299 ) // Any 2xx response code must be considered a success
{ // Webmention couldn't be accepted by some reason:
$failed_urls[] = get_link_tag( $target_url, '', '', 255 ).( empty( $response['body'] ) ? '' : ' ('.T_('Error').': <code>'.$response['body'].'</code>)' );
continue;
}
// Webmention has been accepted successfully:
$success_urls[] = get_link_tag( $target_url, '', '', 255 );
}
$messages = array();
if( count( $success_urls ) )
{ // Success URLs:
$messages[] = sprintf( T_('Webmentions have been accepted for the URLs: %s.'), implode( ', ', $success_urls ) );
}
if( count( $nosupport_urls ) )
{ // No support URLs:
$messages[] = sprintf( T_('The following URLs do not support webmentions: %s.'), implode( ', ', $nosupport_urls ) );
}
if( count( $failed_urls ) )
{ // Failed URLs:
$messages[] = sprintf( T_('Webmentions couldn\'t be accepted for the URLs: %s.'), implode( ', ', $failed_urls ) );
}
if( count( $skipped_urls ) )
{ // Skipped URLs:
$messages[] = sprintf( T_('Skipped URLs: %s.'), implode( ', ', $skipped_urls ) );
}
$params['xmlrpcresp'] = array( 'message' => implode( '<br />', $messages ) );
return true;
}
}
?>