708 lines
No EOL
19 KiB
PHP
708 lines
No EOL
19 KiB
PHP
<?php
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class WP_Webmention_Again_Receiver extends WP_Webmention_Again {
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// cron handle for processing outgoing
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const cron = 'webmention_received';
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/**
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* regular cron interval for processing incoming
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*
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* use 'wp-webmention-again_interval_received' to filter this integer
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*
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* @return int cron interval in seconds
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*
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*/
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protected static function interval () {
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return apply_filters( 'wp-webmention-again-receiver_interval', 90 );
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}
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/**
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* maximum amount of posts per batch to be processed
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*
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* use 'wp-webmention-again_per_batch' to filter this int
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*
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* @return int posts per batch
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*
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*/
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protected static function per_batch () {
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return apply_filters( 'wp-webmention-again-receiver_per_batch', 42 );
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}
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/**
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* max number of retries ( both for outgoing and incoming )
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*
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* use 'wp-webmention-again_retry' to filter this integer
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*
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* @return int cron interval in seconds
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*
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*/
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protected static function retry () {
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return apply_filters( 'wp-webmention-again-receiver_retry', 5 );
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}
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/**
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* regular cron interval for processing incoming
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*
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* use 'wp-webmention-again_interval_received' to filter this integer
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*
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* @return int cron interval in seconds
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*
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*/
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protected static function known_reacji () {
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return apply_filters( 'wp-webmention-again-receiver_known_reacji', 'reacji' );
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}
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/**
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* endpoint for receiving webmentions
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*
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* use 'wp-webmention-again_endpoint' to filter this string
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*
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* @return string name of endpoint
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*
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*/
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protected static function endpoint() {
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return apply_filters( 'wp-webmention-again-receiver_endpoint', 'webmention' );
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}
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public function __construct() {
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parent::__construct();
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// this is mostly for debugging reasons
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// register_activation_hook( __FILE__ , array( __CLASS__ , 'plugin_activate' ) );
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// clear schedules if there's any on deactivation
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register_deactivation_hook( __FILE__ , array( __CLASS__ , 'plugin_deactivate' ) );
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add_action( 'parse_query', array( &$this, 'receive' ) );
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add_action( 'wp_head', array( &$this, 'html_header' ), 99 );
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add_action( 'send_headers', array( &$this, 'http_header' ) );
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// register the action for processing received
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add_action( static::cron, array( &$this, 'process' ) );
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// additional comment types
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add_action( 'admin_comment_types_dropdown', array( &$this, 'comment_types_dropdown' ) );
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}
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public function init () {
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// add webmention endpoint to query vars
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add_filter( 'query_vars', array( &$this, 'add_query_var' ) );
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// because this needs one more filter
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add_filter( 'get_avatar_comment_types', array( &$this, 'add_comment_types' ) );
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// additional avatar filter
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add_filter( 'get_avatar' , array( &$this, 'get_avatar' ), 1, 5 );
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if ( ! wp_get_schedule( static::cron ) )
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wp_schedule_event( time(), static::cron, static::cron );
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}
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/**
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* plugin deactivation hook
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*
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* makes sure there are no scheduled cron hooks left
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*
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*/
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public static function plugin_deactivate () {
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wp_unschedule_event( time(), static::cron );
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wp_clear_scheduled_hook( static::cron );
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}
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/**
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* Extend the "filter by comment type" of in the comments section
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* of the admin interface with all of our methods
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*
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* @param array $types the different comment types
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*
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* @return array the filtered comment types
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*/
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public function comment_types_dropdown( $types ) {
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$options = static::get_options();
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foreach ( $options['comment_types'] as $type => $fancy )
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if ( ! isset( $types[ $type ] ) )
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$types[ $type ] = ucfirst( $type );
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return $types;
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}
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/**
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* extend the abailable comment types in WordPress with the ones recognized
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* by the plugin, including reacji
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*
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* @param array $types current types
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*
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* @return array extended types
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*/
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public function add_comment_types ( $types ) {
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$options = static::get_options();
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foreach ( $options['comment_types'] as $type => $fancy )
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if ( ! in_array( $type, $types ) )
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array_push( $types, $type );
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return $types;
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}
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/**
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* add webmention to accepted query vars
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*
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* @param array $vars current query vars
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*
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* @return array extended vars
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*/
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public function add_query_var( $vars ) {
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array_push( $vars, static::endpoint() );
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return $vars;
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}
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/**
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* extends HTML header with webmention endpoint
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*
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* @output string two lines of HTML <link>
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*
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*/
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public function html_header () {
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$endpoint = site_url( '?'. static::endpoint() .'=endpoint' );
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// backwards compatibility with v0.1
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echo '<link rel="http://webmention.org/" href="' . $endpoint . '" />' . "\n";
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echo '<link rel="webmention" href="' . $endpoint . '" />' . "\n";
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}
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/**
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* extends HTTP response header with webmention endpoints
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*
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* @output two lines of Link: in HTTP header
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*
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*/
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public function http_header() {
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$endpoint = site_url( '?'. static::endpoint() .'=endpoint' );
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// backwards compatibility with v0.1
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header( 'Link: <' . $endpoint . '>; rel="http://webmention.org/"', false );
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header( 'Link: <' . $endpoint . '>; rel="webmention"', false );
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}
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/**
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* parse & queue incoming webmention endpoint requests
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*
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* @param mixed $wp WordPress Query
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*
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*/
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public function receive ( $wp ) {
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// check if it is a webmention request or not
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if ( ! array_key_exists( static::endpoint(), $wp->query_vars ) )
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return false;
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// plain text header
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header( 'Content-Type: text/plain; charset=' . get_option( 'blog_charset' ) );
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// check if source url is transmitted
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if ( ! isset( $_POST['source'] ) ) {
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status_header( 400 );
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echo '"source" is missing';
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exit;
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}
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// check if target url is transmitted
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if ( ! isset( $_POST['target'] ) ) {
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status_header( 400 );
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echo '"target" is missing';
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exit;
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}
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$target = filter_var( $_POST['target'], FILTER_SANITIZE_URL );
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$source = filter_var( $_POST['source'], FILTER_SANITIZE_URL );
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if ( false === filter_var( $target, FILTER_VALIDATE_URL ) ) {
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status_header( 400 );
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echo '"target" is an invalid URL';
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exit;
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}
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if ( false === filter_var( $source, FILTER_VALIDATE_URL ) ) {
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status_header( 400 );
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echo '"source" is an invalid URL';
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exit;
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}
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$post_id = static::validate_local( $target );
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if (! $post_id || 0 == $post_id ) {
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status_header( 404 );
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echo '"target" not found.';
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exit;
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}
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// check if pings are allowed
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if ( ! pings_open( $post_id ) ) {
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status_header( 403 );
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echo 'Pings are disabled for this post';
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exit;
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}
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// queue here, the remote check will be async
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//$r = static::queue_receive( $source, $target, $post_id );
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$r = static::queue_add( 'in', $source, $target, 'post', $post_id );
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if ( true == $r ) {
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status_header( 202 );
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echo 'Webmention accepted in the queue.';
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}
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else {
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status_header( 500 );
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echo 'Something went wrong; please try again later!';
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}
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exit;
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}
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/**
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* worker method for doing received webmentions
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* triggered by cron
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*
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*/
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public function process () {
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$incoming = static::queue_get ( 'in', static::per_batch() );
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if ( empty( $incoming ) )
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return true;
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foreach ( (array)$incoming as $received ) {
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// this really should not happen, but if it does, get rid of this entry immediately
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if (! isset( $received->target ) ||
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empty( $received->target ) ||
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! isset( $received->source ) ||
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empty( $received->source )
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) {
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static::debug( " target or souce empty, aborting" );
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static::queue_del ( $received->id );
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continue;
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}
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static::debug( "processing webmention: target -> {$received->target}, source -> {$received->source}" );
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if ( empty( $received->object_id ) || 0 == $received->object_id )
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$post_id = url_to_postid ( $received->target );
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else
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$post_id = $received->object_id;
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$post = get_post ( $post_id );
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if ( ! static::is_post( $post ) ) {
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static::debug( " no post found for this mention, try again later, who knows?" );
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//static::queue_del ( $received->id );
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continue;
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}
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// too many retries, drop this mention and walk away
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if ( $received->tries >= static::retry() ) {
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static::debug( " this mention was tried earlier and failed too many times, drop it" );
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static::queue_del ( $received->id );
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continue;
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}
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// increment retries
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static::queue_inc ( $received->id );
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// validate target
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$remote = static::try_receive_remote( $post_id, $received->source, $received->target );
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if ( false === $remote || empty( $remote ) ) {
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static::debug( " parsing this mention failed, retrying next time" );
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continue;
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}
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// we have remote data !
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$c = static::try_parse_remote ( $post_id, $received->source, $received->target, $remote );
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$ins = static::insert_comment ( $post_id, $received->source, $received->target, $remote, $c );
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if ( true === $ins ) {
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static::debug( " duplicate (or something similar): this queue element has to be ignored; deleting queue entry" );
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static::queue_del ( $received->id );
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}
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elseif ( is_numeric( $ins ) ) {
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static::debug( " all went well, we have a comment id: {$ins}, deleting queue entry" );
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static::queue_done ( $received->id );
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}
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else {
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static::debug( "This is unexpected. Try again." );
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}
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}
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}
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/**
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* try to get contents of webmention originator
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*
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* @param int $post_id ID of post
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* @param string $source Originator URL
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* @param string $target Target URL
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*
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* @return bool|array false on error; plain array or Mf2 parsed (and
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* flattened ) array of remote content on success
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*/
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protected static function try_receive_remote ( &$post_id, &$source, &$target ) {
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$content = false;
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$q = static::_wp_remote_get( $source );
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if ( false === $q )
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return false;
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$targets = array (
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$target,
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wp_get_shortlink( $post_id ),
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get_permalink( $post_id )
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);
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$found = false;
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foreach ( $targets as $k => $t ) {
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$t = preg_replace( '/https?:\/\/(?:www.)?/', '', $t );
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$t = preg_replace( '/#.*/', '', $t );
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$t = untrailingslashit( $t );
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//$targets[ $k ] = $t;
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if ( ! stristr( $q['body'], $t ) )
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$found = true;
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}
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// check if source really links to target
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// this could be a temporary error, so we'll retry later this one as well
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if ( false == $found ) {
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static::debug( " missing link to {$t} in remote body" );
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return false;
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}
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$ctype = isset( $q['headers']['content-type'] ) ? $q['headers']['content-type'] : 'text/html';
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if ( "text/plain" == $ctype ) {
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static::debug( " interesting, plain text webmention. I'm not prepared for this yet" );
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return false;
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}
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elseif ( $ctype == "application/json" ) {
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static::debug( " content is JSON" );
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$content = json_decode( $q['body'], true );
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}
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else {
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static::debug( " content is (probably) html, trying to parse it with MF2" );
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try {
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$content = Mf2\parse( $q['body'], $source );
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}
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catch ( Exception $e ) {
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static::debug( " parsing MF2 failed: " . $e->getMessage() );
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return false;
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}
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$content = static::flatten_mf2_array( $content );
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}
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return $content;
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}
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/**
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* try to convert remote content to comment
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*
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* @param int $post_id ID of post
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* @param string $source Originator URL
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* @param string $target Target URL
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* @param array $content (Mf2) array of remote content
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*
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* @return bool|int false on error; insterted comment ID on success
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*/
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protected static function try_parse_remote ( &$post_id, &$source, &$target, &$content ) {
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$item = false;
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$p_authors = array();
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if ( isset( $content['items']['properties'] ) && isset( $content['items']['type'] ) ) {
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$item = $content['items'];
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}
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elseif ( is_array($content['items'] ) && ! empty( $content['items']['type'] ) ) {
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foreach ( $content['items'] as $i ) {
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if ( 'h-entry' == $i['type'] ) {
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$items[] = $i;
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}
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elseif ( 'h-card' == $i['type'] ) {
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$p_authors[] = $i;
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}
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elseif ( 'u-comment' == $i['type'] ) {
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$comments[] = $i;
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}
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}
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}
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if ( ! empty ( $items ) )
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$item = array_pop( $items );
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elseif ( empty( $items ) && ! empty( $comments ) )
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$item = array_pop( $comments );
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if (! $item || empty( $item )) {
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static::debug(' no parseable h-entry found, saving as standard mention comment');
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$c = array (
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'comment_author' => $source,
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'comment_author_url' => $source,
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'comment_author_email' => '',
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'comment_post_ID' => $post_id,
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'comment_type' => 'webmention',
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'comment_date' => date("Y-m-d H:i:s"),
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'comment_date_gmt' => date("Y-m-d H:i:s"),
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'comment_agent' => __CLASS__,
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'comment_approved' => 0,
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'comment_content' => sprintf( __( 'This entry was webmentioned on <a href="%s">%s</a>.' ), $source, $source ),
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);
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return $c;
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}
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$author_url = $source;
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// process author
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$author_name = $avatar = $a = false;
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if ( isset( $item['properties']['author'] ) ) {
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$a = $item['properties']['author'];
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}
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elseif ( ! empty( $p_authors ) ) {
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$a = array_pop( $p_authors );
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}
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if ( $a && isset( $a['properties'] ) ) {
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$a = $a['properties'];
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if ( isset($a['name']) && ! empty( $a['name'] ) )
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$author_name = $a['name'];
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$try_photos = array ('photo', 'avatar');
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$p = false;
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foreach ( $try_photos as $photo ) {
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if (isset( $a[ $photo ]) && ! empty( $a[ $photo ] ) ) {
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$p = $a[ $photo ];
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if ( !empty( $p ) ) {
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$avatar = $p;
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break;
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}
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}
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}
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if ( isset($a['url']) && ! empty( $a['url'] ) )
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$author_url = $a['url'];
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}
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// process type
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$type = 'webmention';
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foreach ( static::mftypes() as $k => $mapped ) {
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if ( is_array( $item['properties'] ) && isset( $item['properties'][ $mapped ]) )
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$type = $k;
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}
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//process content
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$c = '';
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if ( isset( $item['properties']['content'] ) && isset( $item['properties']['content']['html'] ) )
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$c = $item['properties']['content']['html'];
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if ( isset( $item['properties']['content'] ) && isset( $item['properties']['content']['value'] ) )
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$c = $item['properties']['content']['value'];
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$c = wp_filter_kses ( $c );
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// REACJI
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$emoji = EmojiRecognizer::isSingleEmoji( $c );
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if ( $emoji ) {
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static::debug( "wheeeee, reacji!" );
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$type = 'reacji';
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//static::register_reacji( $type );
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}
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// process date
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if ( isset( $item['properties']['modified'] ) )
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$date = strtotime( $item['properties']['modified'] );
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elseif ( isset( $item['properties']['published'] ) )
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$date = strtotime( $item['properties']['published'] );
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else
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$date = time();
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$name = empty( $author_name ) ? $source : $author_name;
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$c = array (
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'comment_author' => $name,
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'comment_author_url' => $author_url,
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'comment_author_email' => static::try_get_author_email ( $author_url ),
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'comment_post_ID' => $post_id,
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'comment_type' => $type,
|
|
'comment_date' => date( "Y-m-d H:i:s", $date ),
|
|
'comment_date_gmt' => date( "Y-m-d H:i:s", $date ),
|
|
'comment_agent' => __CLASS__,
|
|
'comment_approved' => 0,
|
|
'comment_content' => $c,
|
|
'comment_avatar' => $avatar,
|
|
);
|
|
|
|
return $c;
|
|
}
|
|
|
|
/**
|
|
* Comment inserter
|
|
*
|
|
* @param string &$post_id post ID
|
|
* @param string &$source Originator URL
|
|
* @param string &$target Target URL
|
|
* @param mixed &$raw Raw format of the comment, like JSON response from the provider
|
|
* @param array &$comment array formatted to match a WP Comment requirement
|
|
*
|
|
*/
|
|
protected static function insert_comment ( &$post_id, &$source, &$target, &$raw, &$comment ) {
|
|
|
|
$comment_id = false;
|
|
|
|
$avatar = false;
|
|
if( isset( $comment['comment_avatar'] ) ) {
|
|
$avatar = $comment['comment_avatar'];
|
|
unset( $comment['comment_avatar'] );
|
|
}
|
|
|
|
// safety first
|
|
$comment['comment_author_email'] = filter_var ( $comment['comment_author_email'], FILTER_SANITIZE_EMAIL );
|
|
$comment['comment_author_url'] = filter_var ( $comment['comment_author_url'], FILTER_SANITIZE_URL );
|
|
$comment['comment_author'] = filter_var ( $comment['comment_author'], FILTER_SANITIZE_STRING);
|
|
|
|
//test if we already have this imported
|
|
$testargs = array(
|
|
'author_url' => $comment['comment_author_url'],
|
|
'post_id' => $post_id,
|
|
);
|
|
|
|
// so if the type is comment and you add type = 'comment', WP will not return the comments
|
|
// such logical!
|
|
if ( 'comment' != $comment['comment_type'] )
|
|
$testargs['type'] = $comment['comment_type'];
|
|
|
|
// in case it's a fav or a like, the date field is not always present
|
|
// but there should be only one of those, so the lack of a date field indicates
|
|
// that we should not look for a date when checking the existence of the
|
|
// comment
|
|
if ( isset( $comment['comment_date'] ) && ! empty( $comment['comment_date'] ) ) {
|
|
// in case you're aware of a nicer way of doing this, please tell me
|
|
// or commit a change...
|
|
|
|
$tmp = explode ( " ", $comment['comment_date'] );
|
|
$d = explode( "-", $tmp[0] );
|
|
$t = explode ( ':', $tmp[1] );
|
|
|
|
$testargs['date_query'] = array(
|
|
'year' => $d[0],
|
|
'monthnum' => $d[1],
|
|
'day' => $d[2],
|
|
'hour' => $t[0],
|
|
'minute' => $t[1],
|
|
'second' => $t[2],
|
|
);
|
|
|
|
//test if we already have this imported
|
|
static::debug( "checking comment existence (with date) for post #{$post_id}" );
|
|
}
|
|
else {
|
|
// we do need a date
|
|
$comment['comment_date'] = date( "Y-m-d H:i:s" );
|
|
$comment['comment_date_gmt'] = date( "Y-m-d H:i:s" );
|
|
|
|
static::debug( "checking comment existence (no date) for post #{$post_id}" );
|
|
}
|
|
|
|
$existing = get_comments( $testargs );
|
|
|
|
// no matching comment yet, insert it
|
|
if ( ! empty( $existing ) ) {
|
|
static::debug ( "comment already exists" );
|
|
return true;
|
|
}
|
|
|
|
// disable flood control, just in case
|
|
remove_filter( 'check_comment_flood', 'check_comment_flood_db', 10, 3 );
|
|
$comment = apply_filters( 'preprocess_comment', $comment );
|
|
|
|
if ( $comment_id = wp_new_comment( $comment ) ) {
|
|
|
|
// add avatar for later use if present
|
|
if ( ! empty( $avatar ) )
|
|
update_comment_meta( $comment_id, 'avatar', $avatar );
|
|
|
|
// full raw response for the vote, just in case
|
|
update_comment_meta( $comment_id, 'webmention_source_mf2', $raw );
|
|
|
|
update_comment_meta( $comment_id, 'webmention_source', $source );
|
|
update_comment_meta( $comment_id, 'webmention_target', $target );
|
|
|
|
// info
|
|
$r = "new comment inserted for {$post_id} as #{$comment_id}";
|
|
|
|
// notify author
|
|
// wp_notify_postauthor( $comment_id );
|
|
}
|
|
else {
|
|
$r = "something went wrong when trying to insert comment for post #{$post_id}";
|
|
}
|
|
|
|
// re-add flood control
|
|
add_filter( 'check_comment_flood', 'check_comment_flood_db', 10, 3 );
|
|
|
|
static::debug( $r );
|
|
|
|
return $comment_id;
|
|
}
|
|
|
|
/**
|
|
* of there is a comment meta 'avatar' field, use that as avatar for the commenter
|
|
*
|
|
* @param string $avatar the current avatar image string
|
|
* @param mixed $id_or_email this could be anything that triggered the avatar all
|
|
* @param string $size size for the image to display
|
|
* @param string $default optional fallback
|
|
* @param string $alt alt text for the avatar image
|
|
*/
|
|
public function get_avatar( $avatar, $id_or_email, $size, $default = '', $alt = '' ) {
|
|
if ( ! is_object( $id_or_email ) || ! isset( $id_or_email->comment_type ) )
|
|
return $avatar;
|
|
|
|
// check if comment has an avatar
|
|
$c_avatar = get_comment_meta( $id_or_email->comment_ID, 'avatar', true );
|
|
|
|
if ( ! $c_avatar )
|
|
return $avatar;
|
|
|
|
if ( false === $alt )
|
|
$safe_alt = '';
|
|
else
|
|
$safe_alt = esc_attr( $alt );
|
|
|
|
return sprintf( '<img alt="%s" src="%s" class="avatar photo u-photo" style="width: %dpx; height: %dpx;" />', $safe_alt, $c_avatar, $size, $size );
|
|
}
|
|
|
|
/**
|
|
*
|
|
*
|
|
*/
|
|
public static function try_get_author_email ( $author_url ) {
|
|
$mail = '';
|
|
|
|
if ( stristr ( $author_url, 'facebook' ) )
|
|
$mail = parse_url ( rtrim ( $author_url, '/'), PHP_URL_PATH ) . '@facebook.com';
|
|
|
|
return $mail;
|
|
}
|
|
|
|
} |