1217 lines
45 KiB
PHP
1217 lines
45 KiB
PHP
<?php
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class Akismet {
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const API_HOST = 'rest.akismet.com';
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const API_PORT = 80;
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const MAX_DELAY_BEFORE_MODERATION_EMAIL = 86400; // One day in seconds
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private static $last_comment = '';
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private static $initiated = false;
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private static $prevent_moderation_email_for_these_comments = array();
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private static $last_comment_result = null;
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private static $comment_as_submitted_allowed_keys = array( 'blog' => '', 'blog_charset' => '', 'blog_lang' => '', 'blog_ua' => '', 'comment_agent' => '', 'comment_author' => '', 'comment_author_IP' => '', 'comment_author_email' => '', 'comment_author_url' => '', 'comment_content' => '', 'comment_date_gmt' => '', 'comment_tags' => '', 'comment_type' => '', 'guid' => '', 'is_test' => '', 'permalink' => '', 'reporter' => '', 'site_domain' => '', 'submit_referer' => '', 'submit_uri' => '', 'user_ID' => '', 'user_agent' => '', 'user_id' => '', 'user_ip' => '' );
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public static function init() {
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if ( ! self::$initiated ) {
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self::init_hooks();
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}
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}
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/**
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* Initializes WordPress hooks
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*/
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private static function init_hooks() {
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self::$initiated = true;
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add_action( 'wp_insert_comment', array( 'Akismet', 'auto_check_update_meta' ), 10, 2 );
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add_filter( 'preprocess_comment', array( 'Akismet', 'auto_check_comment' ), 1 );
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add_action( 'akismet_scheduled_delete', array( 'Akismet', 'delete_old_comments' ) );
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add_action( 'akismet_scheduled_delete', array( 'Akismet', 'delete_old_comments_meta' ) );
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add_action( 'akismet_schedule_cron_recheck', array( 'Akismet', 'cron_recheck' ) );
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/**
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* To disable the Akismet comment nonce, add a filter for the 'akismet_comment_nonce' tag
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* and return any string value that is not 'true' or '' (empty string).
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*
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* Don't return boolean false, because that implies that the 'akismet_comment_nonce' option
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* has not been set and that Akismet should just choose the default behavior for that
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* situation.
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*/
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$akismet_comment_nonce_option = apply_filters( 'akismet_comment_nonce', get_option( 'akismet_comment_nonce' ) );
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if ( $akismet_comment_nonce_option == 'true' || $akismet_comment_nonce_option == '' )
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add_action( 'comment_form', array( 'Akismet', 'add_comment_nonce' ), 1 );
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add_action( 'admin_head-edit-comments.php', array( 'Akismet', 'load_form_js' ) );
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add_action( 'comment_form', array( 'Akismet', 'load_form_js' ) );
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add_action( 'comment_form', array( 'Akismet', 'inject_ak_js' ) );
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add_filter( 'comment_moderation_recipients', array( 'Akismet', 'disable_moderation_emails_if_unreachable' ), 1000, 2 );
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add_filter( 'pre_comment_approved', array( 'Akismet', 'last_comment_status' ), 10, 2 );
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add_action( 'transition_comment_status', array( 'Akismet', 'transition_comment_status' ), 10, 3 );
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// Run this early in the pingback call, before doing a remote fetch of the source uri
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add_action( 'xmlrpc_call', array( 'Akismet', 'pre_check_pingback' ) );
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// Jetpack compatibility
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add_filter( 'jetpack_options_whitelist', array( 'Akismet', 'add_to_jetpack_options_whitelist' ) );
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add_action( 'update_option_wordpress_api_key', array( 'Akismet', 'updated_option' ), 10, 2 );
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}
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public static function get_api_key() {
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return apply_filters( 'akismet_get_api_key', defined('WPCOM_API_KEY') ? constant('WPCOM_API_KEY') : get_option('wordpress_api_key') );
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}
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public static function check_key_status( $key, $ip = null ) {
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return self::http_post( Akismet::build_query( array( 'key' => $key, 'blog' => get_option('home') ) ), 'verify-key', $ip );
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}
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public static function verify_key( $key, $ip = null ) {
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$response = self::check_key_status( $key, $ip );
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if ( $response[1] != 'valid' && $response[1] != 'invalid' )
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return 'failed';
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return $response[1];
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}
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public static function deactivate_key( $key ) {
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$response = self::http_post( Akismet::build_query( array( 'key' => $key, 'blog' => get_option('home') ) ), 'deactivate' );
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if ( $response[1] != 'deactivated' )
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return 'failed';
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return $response[1];
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}
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/**
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* Add the akismet option to the Jetpack options management whitelist.
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*
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* @param array $options The list of whitelisted option names.
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* @return array The updated whitelist
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*/
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public static function add_to_jetpack_options_whitelist( $options ) {
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$options[] = 'wordpress_api_key';
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return $options;
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}
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/**
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* When the akismet option is updated, run the registration call.
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*
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* This should only be run when the option is updated from the Jetpack/WP.com
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* API call, and only if the new key is different than the old key.
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*
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* @param mixed $old_value The old option value.
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* @param mixed $value The new option value.
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*/
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public static function updated_option( $old_value, $value ) {
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// Not an API call
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if ( ! class_exists( 'WPCOM_JSON_API_Update_Option_Endpoint' ) ) {
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return;
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}
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// Only run the registration if the old key is different.
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if ( $old_value !== $value ) {
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self::verify_key( $value );
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}
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}
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public static function auto_check_comment( $commentdata ) {
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self::$last_comment_result = null;
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$comment = $commentdata;
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$comment['user_ip'] = self::get_ip_address();
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$comment['user_agent'] = self::get_user_agent();
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$comment['referrer'] = self::get_referer();
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$comment['blog'] = get_option('home');
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$comment['blog_lang'] = get_locale();
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$comment['blog_charset'] = get_option('blog_charset');
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$comment['permalink'] = get_permalink( $comment['comment_post_ID'] );
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if ( !empty( $comment['user_ID'] ) )
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$comment['user_role'] = Akismet::get_user_roles( $comment['user_ID'] );
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/** See filter documentation in init_hooks(). */
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$akismet_nonce_option = apply_filters( 'akismet_comment_nonce', get_option( 'akismet_comment_nonce' ) );
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$comment['akismet_comment_nonce'] = 'inactive';
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if ( $akismet_nonce_option == 'true' || $akismet_nonce_option == '' ) {
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$comment['akismet_comment_nonce'] = 'failed';
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if ( isset( $_POST['akismet_comment_nonce'] ) && wp_verify_nonce( $_POST['akismet_comment_nonce'], 'akismet_comment_nonce_' . $comment['comment_post_ID'] ) )
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$comment['akismet_comment_nonce'] = 'passed';
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// comment reply in wp-admin
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if ( isset( $_POST['_ajax_nonce-replyto-comment'] ) && check_ajax_referer( 'replyto-comment', '_ajax_nonce-replyto-comment' ) )
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$comment['akismet_comment_nonce'] = 'passed';
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}
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if ( self::is_test_mode() )
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$comment['is_test'] = 'true';
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foreach( $_POST as $key => $value ) {
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if ( is_string( $value ) )
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$comment["POST_{$key}"] = $value;
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}
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foreach ( $_SERVER as $key => $value ) {
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if ( ! is_string( $value ) ) {
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continue;
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}
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if ( preg_match( "/^HTTP_COOKIE/", $key ) ) {
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continue;
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}
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// Send any potentially useful $_SERVER vars, but avoid sending junk we don't need.
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if ( preg_match( "/^(HTTP_|REMOTE_ADDR|REQUEST_URI|DOCUMENT_URI)/", $key ) ) {
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$comment[ "$key" ] = $value;
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}
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}
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$post = get_post( $comment['comment_post_ID'] );
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$comment[ 'comment_post_modified_gmt' ] = $post->post_modified_gmt;
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$response = self::http_post( Akismet::build_query( $comment ), 'comment-check' );
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do_action( 'akismet_comment_check_response', $response );
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$commentdata['comment_as_submitted'] = array_intersect_key( $comment, self::$comment_as_submitted_allowed_keys );
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$commentdata['akismet_result'] = $response[1];
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if ( isset( $response[0]['x-akismet-pro-tip'] ) )
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$commentdata['akismet_pro_tip'] = $response[0]['x-akismet-pro-tip'];
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if ( isset( $response[0]['x-akismet-error'] ) ) {
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// An error occurred that we anticipated (like a suspended key) and want the user to act on.
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// Send to moderation.
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self::$last_comment_result = '0';
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}
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else if ( 'true' == $response[1] ) {
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// akismet_spam_count will be incremented later by comment_is_spam()
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self::$last_comment_result = 'spam';
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$discard = ( isset( $commentdata['akismet_pro_tip'] ) && $commentdata['akismet_pro_tip'] === 'discard' && self::allow_discard() );
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do_action( 'akismet_spam_caught', $discard );
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if ( $discard ) {
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// akismet_result_spam() won't be called so bump the counter here
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if ( $incr = apply_filters('akismet_spam_count_incr', 1) )
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update_option( 'akismet_spam_count', get_option('akismet_spam_count') + $incr );
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$redirect_to = isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : get_permalink( $post );
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wp_safe_redirect( esc_url_raw( $redirect_to ) );
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die();
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}
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}
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// if the response is neither true nor false, hold the comment for moderation and schedule a recheck
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if ( 'true' != $response[1] && 'false' != $response[1] ) {
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if ( !current_user_can('moderate_comments') ) {
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// Comment status should be moderated
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self::$last_comment_result = '0';
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}
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if ( function_exists('wp_next_scheduled') && function_exists('wp_schedule_single_event') ) {
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if ( !wp_next_scheduled( 'akismet_schedule_cron_recheck' ) ) {
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wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' );
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do_action( 'akismet_scheduled_recheck', 'invalid-response-' . $response[1] );
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}
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}
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self::$prevent_moderation_email_for_these_comments[] = $commentdata;
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}
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if ( function_exists('wp_next_scheduled') && function_exists('wp_schedule_event') ) {
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// WP 2.1+: delete old comments daily
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if ( !wp_next_scheduled( 'akismet_scheduled_delete' ) )
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wp_schedule_event( time(), 'daily', 'akismet_scheduled_delete' );
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}
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elseif ( (mt_rand(1, 10) == 3) ) {
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// WP 2.0: run this one time in ten
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self::delete_old_comments();
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}
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self::set_last_comment( $commentdata );
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self::fix_scheduled_recheck();
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return $commentdata;
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}
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public static function get_last_comment() {
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return self::$last_comment;
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}
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public static function set_last_comment( $comment ) {
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if ( is_null( $comment ) ) {
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self::$last_comment = null;
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}
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else {
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// We filter it here so that it matches the filtered comment data that we'll have to compare against later.
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// wp_filter_comment expects comment_author_IP
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self::$last_comment = wp_filter_comment(
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array_merge(
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array( 'comment_author_IP' => self::get_ip_address() ),
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$comment
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)
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);
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}
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}
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// this fires on wp_insert_comment. we can't update comment_meta when auto_check_comment() runs
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// because we don't know the comment ID at that point.
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public static function auto_check_update_meta( $id, $comment ) {
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// failsafe for old WP versions
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if ( !function_exists('add_comment_meta') )
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return false;
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if ( !isset( self::$last_comment['comment_author_email'] ) )
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self::$last_comment['comment_author_email'] = '';
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// wp_insert_comment() might be called in other contexts, so make sure this is the same comment
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// as was checked by auto_check_comment
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if ( is_object( $comment ) && !empty( self::$last_comment ) && is_array( self::$last_comment ) ) {
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if ( self::matches_last_comment( $comment ) ) {
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load_plugin_textdomain( 'akismet' );
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// normal result: true or false
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if ( self::$last_comment['akismet_result'] == 'true' ) {
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update_comment_meta( $comment->comment_ID, 'akismet_result', 'true' );
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self::update_comment_history( $comment->comment_ID, '', 'check-spam' );
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if ( $comment->comment_approved != 'spam' )
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self::update_comment_history(
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$comment->comment_ID,
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'',
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'status-changed-'.$comment->comment_approved
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);
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}
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elseif ( self::$last_comment['akismet_result'] == 'false' ) {
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update_comment_meta( $comment->comment_ID, 'akismet_result', 'false' );
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self::update_comment_history( $comment->comment_ID, '', 'check-ham' );
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// Status could be spam or trash, depending on the WP version and whether this change applies:
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// https://core.trac.wordpress.org/changeset/34726
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if ( $comment->comment_approved == 'spam' || $comment->comment_approved == 'trash' ) {
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if ( wp_blacklist_check($comment->comment_author, $comment->comment_author_email, $comment->comment_author_url, $comment->comment_content, $comment->comment_author_IP, $comment->comment_agent) )
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self::update_comment_history( $comment->comment_ID, '', 'wp-blacklisted' );
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else
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self::update_comment_history( $comment->comment_ID, '', 'status-changed-'.$comment->comment_approved );
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}
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} // abnormal result: error
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else {
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update_comment_meta( $comment->comment_ID, 'akismet_error', time() );
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self::update_comment_history(
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$comment->comment_ID,
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'',
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'check-error',
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array( 'response' => substr( self::$last_comment['akismet_result'], 0, 50 ) )
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);
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}
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// record the complete original data as submitted for checking
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if ( isset( self::$last_comment['comment_as_submitted'] ) )
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update_comment_meta( $comment->comment_ID, 'akismet_as_submitted', self::$last_comment['comment_as_submitted'] );
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if ( isset( self::$last_comment['akismet_pro_tip'] ) )
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update_comment_meta( $comment->comment_ID, 'akismet_pro_tip', self::$last_comment['akismet_pro_tip'] );
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}
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}
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}
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public static function delete_old_comments() {
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global $wpdb;
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/**
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* Determines how many comments will be deleted in each batch.
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*
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* @param int The default, as defined by AKISMET_DELETE_LIMIT.
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*/
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$delete_limit = apply_filters( 'akismet_delete_comment_limit', defined( 'AKISMET_DELETE_LIMIT' ) ? AKISMET_DELETE_LIMIT : 10000 );
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$delete_limit = max( 1, intval( $delete_limit ) );
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/**
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* Determines how many days a comment will be left in the Spam queue before being deleted.
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*
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* @param int The default number of days.
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*/
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$delete_interval = apply_filters( 'akismet_delete_comment_interval', 15 );
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$delete_interval = max( 1, intval( $delete_interval ) );
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while ( $comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_id FROM {$wpdb->comments} WHERE DATE_SUB(NOW(), INTERVAL %d DAY) > comment_date_gmt AND comment_approved = 'spam' LIMIT %d", $delete_interval, $delete_limit ) ) ) {
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if ( empty( $comment_ids ) )
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return;
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$wpdb->queries = array();
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foreach ( $comment_ids as $comment_id ) {
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do_action( 'delete_comment', $comment_id );
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}
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$comma_comment_ids = implode( ', ', array_map('intval', $comment_ids) );
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$wpdb->query("DELETE FROM {$wpdb->comments} WHERE comment_id IN ( $comma_comment_ids )");
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$wpdb->query("DELETE FROM {$wpdb->commentmeta} WHERE comment_id IN ( $comma_comment_ids )");
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clean_comment_cache( $comment_ids );
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}
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if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->comments ) ) // lucky number
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$wpdb->query("OPTIMIZE TABLE {$wpdb->comments}");
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}
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public static function delete_old_comments_meta() {
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global $wpdb;
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$interval = apply_filters( 'akismet_delete_commentmeta_interval', 15 );
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# enfore a minimum of 1 day
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$interval = absint( $interval );
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if ( $interval < 1 )
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$interval = 1;
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// akismet_as_submitted meta values are large, so expire them
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// after $interval days regardless of the comment status
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while ( $comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT m.comment_id FROM {$wpdb->commentmeta} as m INNER JOIN {$wpdb->comments} as c USING(comment_id) WHERE m.meta_key = 'akismet_as_submitted' AND DATE_SUB(NOW(), INTERVAL %d DAY) > c.comment_date_gmt LIMIT 10000", $interval ) ) ) {
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if ( empty( $comment_ids ) )
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return;
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$wpdb->queries = array();
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foreach ( $comment_ids as $comment_id ) {
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delete_comment_meta( $comment_id, 'akismet_as_submitted' );
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}
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}
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if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->commentmeta ) ) // lucky number
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$wpdb->query("OPTIMIZE TABLE {$wpdb->commentmeta}");
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}
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// how many approved comments does this author have?
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public static function get_user_comments_approved( $user_id, $comment_author_email, $comment_author, $comment_author_url ) {
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global $wpdb;
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if ( !empty( $user_id ) )
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return (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM {$wpdb->comments} WHERE user_id = %d AND comment_approved = 1", $user_id ) );
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if ( !empty( $comment_author_email ) )
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return (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM {$wpdb->comments} WHERE comment_author_email = %s AND comment_author = %s AND comment_author_url = %s AND comment_approved = 1", $comment_author_email, $comment_author, $comment_author_url ) );
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return 0;
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}
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// get the full comment history for a given comment, as an array in reverse chronological order
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public static function get_comment_history( $comment_id ) {
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// failsafe for old WP versions
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if ( !function_exists('add_comment_meta') )
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return false;
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$history = get_comment_meta( $comment_id, 'akismet_history', false );
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usort( $history, array( 'Akismet', '_cmp_time' ) );
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return $history;
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}
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/**
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* Log an event for a given comment, storing it in comment_meta.
|
|
*
|
|
* @param int $comment_id The ID of the relevant comment.
|
|
* @param string $message The string description of the event. No longer used.
|
|
* @param string $event The event code.
|
|
* @param array $meta Metadata about the history entry. e.g., the user that reported or changed the status of a given comment.
|
|
*/
|
|
public static function update_comment_history( $comment_id, $message, $event=null, $meta=null ) {
|
|
global $current_user;
|
|
|
|
// failsafe for old WP versions
|
|
if ( !function_exists('add_comment_meta') )
|
|
return false;
|
|
|
|
$user = '';
|
|
|
|
$event = array(
|
|
'time' => self::_get_microtime(),
|
|
'event' => $event,
|
|
);
|
|
|
|
if ( is_object( $current_user ) && isset( $current_user->user_login ) ) {
|
|
$event['user'] = $current_user->user_login;
|
|
}
|
|
|
|
if ( ! empty( $meta ) ) {
|
|
$event['meta'] = $meta;
|
|
}
|
|
|
|
// $unique = false so as to allow multiple values per comment
|
|
$r = add_comment_meta( $comment_id, 'akismet_history', $event, false );
|
|
}
|
|
|
|
public static function check_db_comment( $id, $recheck_reason = 'recheck_queue' ) {
|
|
global $wpdb;
|
|
|
|
$c = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->comments} WHERE comment_ID = %d", $id ), ARRAY_A );
|
|
if ( !$c )
|
|
return;
|
|
|
|
$c['user_ip'] = $c['comment_author_IP'];
|
|
$c['user_agent'] = $c['comment_agent'];
|
|
$c['referrer'] = '';
|
|
$c['blog'] = get_option('home');
|
|
$c['blog_lang'] = get_locale();
|
|
$c['blog_charset'] = get_option('blog_charset');
|
|
$c['permalink'] = get_permalink($c['comment_post_ID']);
|
|
$c['recheck_reason'] = $recheck_reason;
|
|
|
|
if ( self::is_test_mode() )
|
|
$c['is_test'] = 'true';
|
|
|
|
$response = self::http_post( Akismet::build_query( $c ), 'comment-check' );
|
|
|
|
return ( is_array( $response ) && ! empty( $response[1] ) ) ? $response[1] : false;
|
|
}
|
|
|
|
|
|
|
|
public static function transition_comment_status( $new_status, $old_status, $comment ) {
|
|
|
|
if ( $new_status == $old_status )
|
|
return;
|
|
|
|
# we don't need to record a history item for deleted comments
|
|
if ( $new_status == 'delete' )
|
|
return;
|
|
|
|
if ( !current_user_can( 'edit_post', $comment->comment_post_ID ) && !current_user_can( 'moderate_comments' ) )
|
|
return;
|
|
|
|
if ( defined('WP_IMPORTING') && WP_IMPORTING == true )
|
|
return;
|
|
|
|
// if this is present, it means the status has been changed by a re-check, not an explicit user action
|
|
if ( get_comment_meta( $comment->comment_ID, 'akismet_rechecking' ) )
|
|
return;
|
|
|
|
global $current_user;
|
|
$reporter = '';
|
|
if ( is_object( $current_user ) )
|
|
$reporter = $current_user->user_login;
|
|
|
|
// Assumption alert:
|
|
// We want to submit comments to Akismet only when a moderator explicitly spams or approves it - not if the status
|
|
// is changed automatically by another plugin. Unfortunately WordPress doesn't provide an unambiguous way to
|
|
// determine why the transition_comment_status action was triggered. And there are several different ways by which
|
|
// to spam and unspam comments: bulk actions, ajax, links in moderation emails, the dashboard, and perhaps others.
|
|
// We'll assume that this is an explicit user action if certain POST/GET variables exist.
|
|
if ( ( isset( $_POST['status'] ) && in_array( $_POST['status'], array( 'spam', 'unspam' ) ) ) ||
|
|
( isset( $_POST['spam'] ) && (int) $_POST['spam'] == 1 ) ||
|
|
( isset( $_POST['unspam'] ) && (int) $_POST['unspam'] == 1 ) ||
|
|
( isset( $_POST['comment_status'] ) && in_array( $_POST['comment_status'], array( 'spam', 'unspam' ) ) ) ||
|
|
( isset( $_GET['action'] ) && in_array( $_GET['action'], array( 'spam', 'unspam', 'spamcomment', 'unspamcomment', ) ) ) ||
|
|
( isset( $_POST['action'] ) && in_array( $_POST['action'], array( 'editedcomment' ) ) ) ||
|
|
( isset( $_GET['for'] ) && ( 'jetpack' == $_GET['for'] ) ) // Moderation via WP.com notifications/WP app/etc.
|
|
) {
|
|
if ( $new_status == 'spam' && ( $old_status == 'approved' || $old_status == 'unapproved' || !$old_status ) ) {
|
|
return self::submit_spam_comment( $comment->comment_ID );
|
|
} elseif ( $old_status == 'spam' && ( $new_status == 'approved' || $new_status == 'unapproved' ) ) {
|
|
return self::submit_nonspam_comment( $comment->comment_ID );
|
|
}
|
|
}
|
|
|
|
self::update_comment_history( $comment->comment_ID, '', 'status-' . $new_status );
|
|
}
|
|
|
|
public static function submit_spam_comment( $comment_id ) {
|
|
global $wpdb, $current_user, $current_site;
|
|
|
|
$comment_id = (int) $comment_id;
|
|
|
|
$comment = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->comments} WHERE comment_ID = %d", $comment_id ) );
|
|
|
|
if ( !$comment ) // it was deleted
|
|
return;
|
|
|
|
if ( 'spam' != $comment->comment_approved )
|
|
return;
|
|
|
|
// use the original version stored in comment_meta if available
|
|
$as_submitted = self::sanitize_comment_as_submitted( get_comment_meta( $comment_id, 'akismet_as_submitted', true ) );
|
|
|
|
if ( $as_submitted && is_array( $as_submitted ) && isset( $as_submitted['comment_content'] ) )
|
|
$comment = (object) array_merge( (array)$comment, $as_submitted );
|
|
|
|
$comment->blog = get_bloginfo('url');
|
|
$comment->blog_lang = get_locale();
|
|
$comment->blog_charset = get_option('blog_charset');
|
|
$comment->permalink = get_permalink($comment->comment_post_ID);
|
|
|
|
if ( is_object($current_user) )
|
|
$comment->reporter = $current_user->user_login;
|
|
|
|
if ( is_object($current_site) )
|
|
$comment->site_domain = $current_site->domain;
|
|
|
|
$comment->user_role = '';
|
|
if ( isset( $comment->user_ID ) )
|
|
$comment->user_role = Akismet::get_user_roles( $comment->user_ID );
|
|
|
|
if ( self::is_test_mode() )
|
|
$comment->is_test = 'true';
|
|
|
|
$post = get_post( $comment->comment_post_ID );
|
|
$comment->comment_post_modified_gmt = $post->post_modified_gmt;
|
|
|
|
$response = Akismet::http_post( Akismet::build_query( $comment ), 'submit-spam' );
|
|
if ( $comment->reporter ) {
|
|
self::update_comment_history( $comment_id, '', 'report-spam' );
|
|
update_comment_meta( $comment_id, 'akismet_user_result', 'true' );
|
|
update_comment_meta( $comment_id, 'akismet_user', $comment->reporter );
|
|
}
|
|
|
|
do_action('akismet_submit_spam_comment', $comment_id, $response[1]);
|
|
}
|
|
|
|
public static function submit_nonspam_comment( $comment_id ) {
|
|
global $wpdb, $current_user, $current_site;
|
|
|
|
$comment_id = (int) $comment_id;
|
|
|
|
$comment = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->comments} WHERE comment_ID = %d", $comment_id ) );
|
|
if ( !$comment ) // it was deleted
|
|
return;
|
|
|
|
// use the original version stored in comment_meta if available
|
|
$as_submitted = self::sanitize_comment_as_submitted( get_comment_meta( $comment_id, 'akismet_as_submitted', true ) );
|
|
|
|
if ( $as_submitted && is_array($as_submitted) && isset($as_submitted['comment_content']) )
|
|
$comment = (object) array_merge( (array)$comment, $as_submitted );
|
|
|
|
$comment->blog = get_bloginfo('url');
|
|
$comment->blog_lang = get_locale();
|
|
$comment->blog_charset = get_option('blog_charset');
|
|
$comment->permalink = get_permalink( $comment->comment_post_ID );
|
|
$comment->user_role = '';
|
|
|
|
if ( is_object($current_user) )
|
|
$comment->reporter = $current_user->user_login;
|
|
|
|
if ( is_object($current_site) )
|
|
$comment->site_domain = $current_site->domain;
|
|
|
|
if ( isset( $comment->user_ID ) )
|
|
$comment->user_role = Akismet::get_user_roles($comment->user_ID);
|
|
|
|
if ( Akismet::is_test_mode() )
|
|
$comment->is_test = 'true';
|
|
|
|
$post = get_post( $comment->comment_post_ID );
|
|
$comment->comment_post_modified_gmt = $post->post_modified_gmt;
|
|
|
|
$response = self::http_post( Akismet::build_query( $comment ), 'submit-ham' );
|
|
if ( $comment->reporter ) {
|
|
self::update_comment_history( $comment_id, '', 'report-ham' );
|
|
update_comment_meta( $comment_id, 'akismet_user_result', 'false' );
|
|
update_comment_meta( $comment_id, 'akismet_user', $comment->reporter );
|
|
}
|
|
|
|
do_action('akismet_submit_nonspam_comment', $comment_id, $response[1]);
|
|
}
|
|
|
|
public static function cron_recheck() {
|
|
global $wpdb;
|
|
|
|
$api_key = self::get_api_key();
|
|
|
|
$status = self::verify_key( $api_key );
|
|
if ( get_option( 'akismet_alert_code' ) || $status == 'invalid' ) {
|
|
// since there is currently a problem with the key, reschedule a check for 6 hours hence
|
|
wp_schedule_single_event( time() + 21600, 'akismet_schedule_cron_recheck' );
|
|
do_action( 'akismet_scheduled_recheck', 'key-problem-' . get_option( 'akismet_alert_code' ) . '-' . $status );
|
|
return false;
|
|
}
|
|
|
|
delete_option('akismet_available_servers');
|
|
|
|
$comment_errors = $wpdb->get_col( "SELECT comment_id FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error' LIMIT 100" );
|
|
|
|
load_plugin_textdomain( 'akismet' );
|
|
|
|
foreach ( (array) $comment_errors as $comment_id ) {
|
|
// if the comment no longer exists, or is too old, remove the meta entry from the queue to avoid getting stuck
|
|
$comment = get_comment( $comment_id );
|
|
if ( !$comment || strtotime( $comment->comment_date_gmt ) < strtotime( "-15 days" ) ) {
|
|
delete_comment_meta( $comment_id, 'akismet_error' );
|
|
delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' );
|
|
continue;
|
|
}
|
|
|
|
add_comment_meta( $comment_id, 'akismet_rechecking', true );
|
|
$status = self::check_db_comment( $comment_id, 'retry' );
|
|
|
|
$event = '';
|
|
if ( $status == 'true' ) {
|
|
$event = 'cron-retry-spam';
|
|
} elseif ( $status == 'false' ) {
|
|
$event = 'cron-retry-ham';
|
|
}
|
|
|
|
// If we got back a legit response then update the comment history
|
|
// other wise just bail now and try again later. No point in
|
|
// re-trying all the comments once we hit one failure.
|
|
if ( !empty( $event ) ) {
|
|
delete_comment_meta( $comment_id, 'akismet_error' );
|
|
self::update_comment_history( $comment_id, '', $event );
|
|
update_comment_meta( $comment_id, 'akismet_result', $status );
|
|
// make sure the comment status is still pending. if it isn't, that means the user has already moved it elsewhere.
|
|
$comment = get_comment( $comment_id );
|
|
if ( $comment && 'unapproved' == wp_get_comment_status( $comment_id ) ) {
|
|
if ( $status == 'true' ) {
|
|
wp_spam_comment( $comment_id );
|
|
} elseif ( $status == 'false' ) {
|
|
// comment is good, but it's still in the pending queue. depending on the moderation settings
|
|
// we may need to change it to approved.
|
|
if ( check_comment($comment->comment_author, $comment->comment_author_email, $comment->comment_author_url, $comment->comment_content, $comment->comment_author_IP, $comment->comment_agent, $comment->comment_type) )
|
|
wp_set_comment_status( $comment_id, 1 );
|
|
else if ( get_comment_meta( $comment_id, 'akismet_delayed_moderation_email', true ) )
|
|
wp_notify_moderator( $comment_id );
|
|
}
|
|
}
|
|
|
|
delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' );
|
|
} else {
|
|
// If this comment has been pending moderation for longer than MAX_DELAY_BEFORE_MODERATION_EMAIL,
|
|
// send a moderation email now.
|
|
if ( ( intval( gmdate( 'U' ) ) - strtotime( $comment->comment_date_gmt ) ) < self::MAX_DELAY_BEFORE_MODERATION_EMAIL ) {
|
|
delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' );
|
|
wp_notify_moderator( $comment_id );
|
|
}
|
|
|
|
delete_comment_meta( $comment_id, 'akismet_rechecking' );
|
|
wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' );
|
|
do_action( 'akismet_scheduled_recheck', 'check-db-comment-' . $status );
|
|
return;
|
|
}
|
|
delete_comment_meta( $comment_id, 'akismet_rechecking' );
|
|
}
|
|
|
|
$remaining = $wpdb->get_var( "SELECT COUNT(*) FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error'" );
|
|
if ( $remaining && !wp_next_scheduled('akismet_schedule_cron_recheck') ) {
|
|
wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' );
|
|
do_action( 'akismet_scheduled_recheck', 'remaining' );
|
|
}
|
|
}
|
|
|
|
public static function fix_scheduled_recheck() {
|
|
$future_check = wp_next_scheduled( 'akismet_schedule_cron_recheck' );
|
|
if ( !$future_check ) {
|
|
return;
|
|
}
|
|
|
|
if ( get_option( 'akismet_alert_code' ) > 0 ) {
|
|
return;
|
|
}
|
|
|
|
$check_range = time() + 1200;
|
|
if ( $future_check > $check_range ) {
|
|
wp_clear_scheduled_hook( 'akismet_schedule_cron_recheck' );
|
|
wp_schedule_single_event( time() + 300, 'akismet_schedule_cron_recheck' );
|
|
do_action( 'akismet_scheduled_recheck', 'fix-scheduled-recheck' );
|
|
}
|
|
}
|
|
|
|
public static function add_comment_nonce( $post_id ) {
|
|
echo '<p style="display: none;">';
|
|
wp_nonce_field( 'akismet_comment_nonce_' . $post_id, 'akismet_comment_nonce', FALSE );
|
|
echo '</p>';
|
|
}
|
|
|
|
public static function is_test_mode() {
|
|
return defined('AKISMET_TEST_MODE') && AKISMET_TEST_MODE;
|
|
}
|
|
|
|
public static function allow_discard() {
|
|
if ( defined( 'DOING_AJAX' ) && DOING_AJAX )
|
|
return false;
|
|
if ( is_user_logged_in() )
|
|
return false;
|
|
|
|
return ( get_option( 'akismet_strictness' ) === '1' );
|
|
}
|
|
|
|
public static function get_ip_address() {
|
|
return isset( $_SERVER['REMOTE_ADDR'] ) ? $_SERVER['REMOTE_ADDR'] : null;
|
|
}
|
|
|
|
/**
|
|
* Do these two comments, without checking the comment_ID, "match"?
|
|
*
|
|
* @param mixed $comment1 A comment object or array.
|
|
* @param mixed $comment2 A comment object or array.
|
|
* @return bool Whether the two comments should be treated as the same comment.
|
|
*/
|
|
private static function comments_match( $comment1, $comment2 ) {
|
|
$comment1 = (array) $comment1;
|
|
$comment2 = (array) $comment2;
|
|
|
|
$comments_match = (
|
|
isset( $comment1['comment_post_ID'], $comment2['comment_post_ID'] )
|
|
&& intval( $comment1['comment_post_ID'] ) == intval( $comment2['comment_post_ID'] )
|
|
&& (
|
|
// The comment author length max is 255 characters, limited by the TINYTEXT column type.
|
|
// If the comment author includes multibyte characters right around the 255-byte mark, they
|
|
// may be stripped when the author is saved in the DB, so a 300+ char author may turn into
|
|
// a 253-char author when it's saved, not 255 exactly. The longest possible character is
|
|
// theoretically 6 bytes, so we'll only look at the first 248 bytes to be safe.
|
|
substr( $comment1['comment_author'], 0, 248 ) == substr( $comment2['comment_author'], 0, 248 )
|
|
|| substr( stripslashes( $comment1['comment_author'] ), 0, 248 ) == substr( $comment2['comment_author'], 0, 248 )
|
|
|| substr( $comment1['comment_author'], 0, 248 ) == substr( stripslashes( $comment2['comment_author'] ), 0, 248 )
|
|
// Certain long comment author names will be truncated to nothing, depending on their encoding.
|
|
|| ( ! $comment1['comment_author'] && strlen( $comment2['comment_author'] ) > 248 )
|
|
|| ( ! $comment2['comment_author'] && strlen( $comment1['comment_author'] ) > 248 )
|
|
)
|
|
&& (
|
|
// The email max length is 100 characters, limited by the VARCHAR(100) column type.
|
|
// Same argument as above for only looking at the first 93 characters.
|
|
substr( $comment1['comment_author_email'], 0, 93 ) == substr( $comment2['comment_author_email'], 0, 93 )
|
|
|| substr( stripslashes( $comment1['comment_author_email'] ), 0, 93 ) == substr( $comment2['comment_author_email'], 0, 93 )
|
|
|| substr( $comment1['comment_author_email'], 0, 93 ) == substr( stripslashes( $comment2['comment_author_email'] ), 0, 93 )
|
|
// Very long emails can be truncated and then stripped if the [0:100] substring isn't a valid address.
|
|
|| ( ! $comment1['comment_author_email'] && strlen( $comment2['comment_author_email'] ) > 100 )
|
|
|| ( ! $comment2['comment_author_email'] && strlen( $comment1['comment_author_email'] ) > 100 )
|
|
)
|
|
);
|
|
|
|
return $comments_match;
|
|
}
|
|
|
|
// Does the supplied comment match the details of the one most recently stored in self::$last_comment?
|
|
public static function matches_last_comment( $comment ) {
|
|
if ( is_object( $comment ) )
|
|
$comment = (array) $comment;
|
|
|
|
return self::comments_match( self::$last_comment, $comment );
|
|
}
|
|
|
|
private static function get_user_agent() {
|
|
return isset( $_SERVER['HTTP_USER_AGENT'] ) ? $_SERVER['HTTP_USER_AGENT'] : null;
|
|
}
|
|
|
|
private static function get_referer() {
|
|
return isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : null;
|
|
}
|
|
|
|
// return a comma-separated list of role names for the given user
|
|
public static function get_user_roles( $user_id ) {
|
|
$roles = false;
|
|
|
|
if ( !class_exists('WP_User') )
|
|
return false;
|
|
|
|
if ( $user_id > 0 ) {
|
|
$comment_user = new WP_User( $user_id );
|
|
if ( isset( $comment_user->roles ) )
|
|
$roles = join( ',', $comment_user->roles );
|
|
}
|
|
|
|
if ( is_multisite() && is_super_admin( $user_id ) ) {
|
|
if ( empty( $roles ) ) {
|
|
$roles = 'super_admin';
|
|
} else {
|
|
$comment_user->roles[] = 'super_admin';
|
|
$roles = join( ',', $comment_user->roles );
|
|
}
|
|
}
|
|
|
|
return $roles;
|
|
}
|
|
|
|
// filter handler used to return a spam result to pre_comment_approved
|
|
public static function last_comment_status( $approved, $comment ) {
|
|
if ( is_null( self::$last_comment_result ) ) {
|
|
// We didn't have reason to store the result of the last check.
|
|
return $approved;
|
|
}
|
|
|
|
// Only do this if it's the correct comment
|
|
if ( ! self::matches_last_comment( $comment ) ) {
|
|
self::log( "comment_is_spam mismatched comment, returning unaltered $approved" );
|
|
return $approved;
|
|
}
|
|
|
|
// bump the counter here instead of when the filter is added to reduce the possibility of overcounting
|
|
if ( $incr = apply_filters('akismet_spam_count_incr', 1) )
|
|
update_option( 'akismet_spam_count', get_option('akismet_spam_count') + $incr );
|
|
|
|
return self::$last_comment_result;
|
|
}
|
|
|
|
/**
|
|
* If Akismet is temporarily unreachable, we don't want to "spam" the blogger with
|
|
* moderation emails for comments that will be automatically cleared or spammed on
|
|
* the next retry.
|
|
*
|
|
* For comments that will be rechecked later, empty the list of email addresses that
|
|
* the moderation email would be sent to.
|
|
*
|
|
* @param array $emails An array of email addresses that the moderation email will be sent to.
|
|
* @param int $comment_id The ID of the relevant comment.
|
|
* @return array An array of email addresses that the moderation email will be sent to.
|
|
*/
|
|
public static function disable_moderation_emails_if_unreachable( $emails, $comment_id ) {
|
|
if ( ! empty( self::$prevent_moderation_email_for_these_comments ) && ! empty( $emails ) ) {
|
|
$comment = get_comment( $comment_id );
|
|
|
|
foreach ( self::$prevent_moderation_email_for_these_comments as $possible_match ) {
|
|
if ( self::comments_match( $possible_match, $comment ) ) {
|
|
update_comment_meta( $comment_id, 'akismet_delayed_moderation_email', true );
|
|
return array();
|
|
}
|
|
}
|
|
}
|
|
|
|
return $emails;
|
|
}
|
|
|
|
public static function _cmp_time( $a, $b ) {
|
|
return $a['time'] > $b['time'] ? -1 : 1;
|
|
}
|
|
|
|
public static function _get_microtime() {
|
|
$mtime = explode( ' ', microtime() );
|
|
return $mtime[1] + $mtime[0];
|
|
}
|
|
|
|
/**
|
|
* Make a POST request to the Akismet API.
|
|
*
|
|
* @param string $request The body of the request.
|
|
* @param string $path The path for the request.
|
|
* @param string $ip The specific IP address to hit.
|
|
* @return array A two-member array consisting of the headers and the response body, both empty in the case of a failure.
|
|
*/
|
|
public static function http_post( $request, $path, $ip=null ) {
|
|
|
|
$akismet_ua = sprintf( 'WordPress/%s | Akismet/%s', $GLOBALS['wp_version'], constant( 'AKISMET_VERSION' ) );
|
|
$akismet_ua = apply_filters( 'akismet_ua', $akismet_ua );
|
|
|
|
$content_length = strlen( $request );
|
|
|
|
$api_key = self::get_api_key();
|
|
$host = self::API_HOST;
|
|
|
|
if ( !empty( $api_key ) )
|
|
$host = $api_key.'.'.$host;
|
|
|
|
$http_host = $host;
|
|
// use a specific IP if provided
|
|
// needed by Akismet_Admin::check_server_connectivity()
|
|
if ( $ip && long2ip( ip2long( $ip ) ) ) {
|
|
$http_host = $ip;
|
|
}
|
|
|
|
$http_args = array(
|
|
'body' => $request,
|
|
'headers' => array(
|
|
'Content-Type' => 'application/x-www-form-urlencoded; charset=' . get_option( 'blog_charset' ),
|
|
'Host' => $host,
|
|
'User-Agent' => $akismet_ua,
|
|
),
|
|
'httpversion' => '1.0',
|
|
'timeout' => 15
|
|
);
|
|
|
|
$akismet_url = $http_akismet_url = "http://{$http_host}/1.1/{$path}";
|
|
|
|
/**
|
|
* Try SSL first; if that fails, try without it and don't try it again for a while.
|
|
*/
|
|
|
|
$ssl = $ssl_failed = false;
|
|
|
|
// Check if SSL requests were disabled fewer than X hours ago.
|
|
$ssl_disabled = get_option( 'akismet_ssl_disabled' );
|
|
|
|
if ( $ssl_disabled && $ssl_disabled < ( time() - 60 * 60 * 24 ) ) { // 24 hours
|
|
$ssl_disabled = false;
|
|
delete_option( 'akismet_ssl_disabled' );
|
|
}
|
|
else if ( $ssl_disabled ) {
|
|
do_action( 'akismet_ssl_disabled' );
|
|
}
|
|
|
|
if ( ! $ssl_disabled && function_exists( 'wp_http_supports') && ( $ssl = wp_http_supports( array( 'ssl' ) ) ) ) {
|
|
$akismet_url = set_url_scheme( $akismet_url, 'https' );
|
|
|
|
do_action( 'akismet_https_request_pre' );
|
|
}
|
|
|
|
$response = wp_remote_post( $akismet_url, $http_args );
|
|
|
|
Akismet::log( compact( 'akismet_url', 'http_args', 'response' ) );
|
|
|
|
if ( $ssl && is_wp_error( $response ) ) {
|
|
do_action( 'akismet_https_request_failure', $response );
|
|
|
|
// Intermittent connection problems may cause the first HTTPS
|
|
// request to fail and subsequent HTTP requests to succeed randomly.
|
|
// Retry the HTTPS request once before disabling SSL for a time.
|
|
$response = wp_remote_post( $akismet_url, $http_args );
|
|
|
|
Akismet::log( compact( 'akismet_url', 'http_args', 'response' ) );
|
|
|
|
if ( is_wp_error( $response ) ) {
|
|
$ssl_failed = true;
|
|
|
|
do_action( 'akismet_https_request_failure', $response );
|
|
|
|
do_action( 'akismet_http_request_pre' );
|
|
|
|
// Try the request again without SSL.
|
|
$response = wp_remote_post( $http_akismet_url, $http_args );
|
|
|
|
Akismet::log( compact( 'http_akismet_url', 'http_args', 'response' ) );
|
|
}
|
|
}
|
|
|
|
if ( is_wp_error( $response ) ) {
|
|
do_action( 'akismet_request_failure', $response );
|
|
|
|
return array( '', '' );
|
|
}
|
|
|
|
if ( $ssl_failed ) {
|
|
// The request failed when using SSL but succeeded without it. Disable SSL for future requests.
|
|
update_option( 'akismet_ssl_disabled', time() );
|
|
|
|
do_action( 'akismet_https_disabled' );
|
|
}
|
|
|
|
$simplified_response = array( $response['headers'], $response['body'] );
|
|
|
|
self::update_alert( $simplified_response );
|
|
|
|
return $simplified_response;
|
|
}
|
|
|
|
// given a response from an API call like check_key_status(), update the alert code options if an alert is present.
|
|
private static function update_alert( $response ) {
|
|
$code = $msg = null;
|
|
if ( isset( $response[0]['x-akismet-alert-code'] ) ) {
|
|
$code = $response[0]['x-akismet-alert-code'];
|
|
$msg = $response[0]['x-akismet-alert-msg'];
|
|
}
|
|
|
|
// only call update_option() if the value has changed
|
|
if ( $code != get_option( 'akismet_alert_code' ) ) {
|
|
if ( ! $code ) {
|
|
delete_option( 'akismet_alert_code' );
|
|
delete_option( 'akismet_alert_msg' );
|
|
}
|
|
else {
|
|
update_option( 'akismet_alert_code', $code );
|
|
update_option( 'akismet_alert_msg', $msg );
|
|
}
|
|
}
|
|
}
|
|
|
|
public static function load_form_js() {
|
|
// WP < 3.3 can't enqueue a script this late in the game and still have it appear in the footer.
|
|
// Once we drop support for everything pre-3.3, this can change back to a single enqueue call.
|
|
wp_register_script( 'akismet-form', plugin_dir_url( __FILE__ ) . '_inc/form.js', array(), AKISMET_VERSION, true );
|
|
add_action( 'wp_footer', array( 'Akismet', 'print_form_js' ) );
|
|
add_action( 'admin_footer', array( 'Akismet', 'print_form_js' ) );
|
|
}
|
|
|
|
public static function print_form_js() {
|
|
wp_print_scripts( 'akismet-form' );
|
|
}
|
|
|
|
public static function inject_ak_js( $fields ) {
|
|
echo '<p style="display: none;">';
|
|
echo '<input type="hidden" id="ak_js" name="ak_js" value="' . mt_rand( 0, 250 ) . '"/>';
|
|
echo '</p>';
|
|
}
|
|
|
|
private static function bail_on_activation( $message, $deactivate = true ) {
|
|
?>
|
|
<!doctype html>
|
|
<html>
|
|
<head>
|
|
<meta charset="<?php bloginfo( 'charset' ); ?>">
|
|
<style>
|
|
* {
|
|
text-align: center;
|
|
margin: 0;
|
|
padding: 0;
|
|
font-family: "Lucida Grande",Verdana,Arial,"Bitstream Vera Sans",sans-serif;
|
|
}
|
|
p {
|
|
margin-top: 1em;
|
|
font-size: 18px;
|
|
}
|
|
</style>
|
|
<body>
|
|
<p><?php echo esc_html( $message ); ?></p>
|
|
</body>
|
|
</html>
|
|
<?php
|
|
if ( $deactivate ) {
|
|
$plugins = get_option( 'active_plugins' );
|
|
$akismet = plugin_basename( AKISMET__PLUGIN_DIR . 'akismet.php' );
|
|
$update = false;
|
|
foreach ( $plugins as $i => $plugin ) {
|
|
if ( $plugin === $akismet ) {
|
|
$plugins[$i] = false;
|
|
$update = true;
|
|
}
|
|
}
|
|
|
|
if ( $update ) {
|
|
update_option( 'active_plugins', array_filter( $plugins ) );
|
|
}
|
|
}
|
|
exit;
|
|
}
|
|
|
|
public static function view( $name, array $args = array() ) {
|
|
$args = apply_filters( 'akismet_view_arguments', $args, $name );
|
|
|
|
foreach ( $args AS $key => $val ) {
|
|
$$key = $val;
|
|
}
|
|
|
|
load_plugin_textdomain( 'akismet' );
|
|
|
|
$file = AKISMET__PLUGIN_DIR . 'views/'. $name . '.php';
|
|
|
|
include( $file );
|
|
}
|
|
|
|
/**
|
|
* Attached to activate_{ plugin_basename( __FILES__ ) } by register_activation_hook()
|
|
* @static
|
|
*/
|
|
public static function plugin_activation() {
|
|
if ( version_compare( $GLOBALS['wp_version'], AKISMET__MINIMUM_WP_VERSION, '<' ) ) {
|
|
load_plugin_textdomain( 'akismet' );
|
|
|
|
$message = '<strong>'.sprintf(esc_html__( 'Akismet %s requires WordPress %s or higher.' , 'akismet'), AKISMET_VERSION, AKISMET__MINIMUM_WP_VERSION ).'</strong> '.sprintf(__('Please <a href="%1$s">upgrade WordPress</a> to a current version, or <a href="%2$s">downgrade to version 2.4 of the Akismet plugin</a>.', 'akismet'), 'https://codex.wordpress.org/Upgrading_WordPress', 'https://wordpress.org/extend/plugins/akismet/download/');
|
|
|
|
Akismet::bail_on_activation( $message );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes all connection options
|
|
* @static
|
|
*/
|
|
public static function plugin_deactivation( ) {
|
|
return self::deactivate_key( self::get_api_key() );
|
|
}
|
|
|
|
/**
|
|
* Essentially a copy of WP's build_query but one that doesn't expect pre-urlencoded values.
|
|
*
|
|
* @param array $args An array of key => value pairs
|
|
* @return string A string ready for use as a URL query string.
|
|
*/
|
|
public static function build_query( $args ) {
|
|
return _http_build_query( $args, '', '&' );
|
|
}
|
|
|
|
/**
|
|
* Log debugging info to the error log.
|
|
*
|
|
* Enabled when WP_DEBUG_LOG is enabled (and WP_DEBUG, since according to
|
|
* core, "WP_DEBUG_DISPLAY and WP_DEBUG_LOG perform no function unless
|
|
* WP_DEBUG is true), but can be disabled via the akismet_debug_log filter.
|
|
*
|
|
* @param mixed $akismet_debug The data to log.
|
|
*/
|
|
public static function log( $akismet_debug ) {
|
|
if ( apply_filters( 'akismet_debug_log', defined( 'WP_DEBUG' ) && WP_DEBUG && defined( 'WP_DEBUG_LOG' ) && WP_DEBUG_LOG ) ) {
|
|
error_log( print_r( compact( 'akismet_debug' ), true ) );
|
|
}
|
|
}
|
|
|
|
public static function pre_check_pingback( $method ) {
|
|
if ( $method !== 'pingback.ping' )
|
|
return;
|
|
|
|
global $wp_xmlrpc_server;
|
|
|
|
if ( !is_object( $wp_xmlrpc_server ) )
|
|
return false;
|
|
|
|
// Lame: tightly coupled with the IXR class.
|
|
$args = $wp_xmlrpc_server->message->params;
|
|
|
|
if ( !empty( $args[1] ) ) {
|
|
$post_id = url_to_postid( $args[1] );
|
|
|
|
// If this gets through the pre-check, make sure we properly identify the outbound request as a pingback verification
|
|
Akismet::pingback_forwarded_for( null, $args[0] );
|
|
add_filter( 'http_request_args', array( 'Akismet', 'pingback_forwarded_for' ), 10, 2 );
|
|
|
|
$comment = array(
|
|
'comment_author_url' => $args[0],
|
|
'comment_post_ID' => $post_id,
|
|
'comment_author' => '',
|
|
'comment_author_email' => '',
|
|
'comment_content' => '',
|
|
'comment_type' => 'pingback',
|
|
'akismet_pre_check' => '1',
|
|
'comment_pingback_target' => $args[1],
|
|
);
|
|
|
|
$comment = Akismet::auto_check_comment( $comment );
|
|
|
|
if ( isset( $comment['akismet_result'] ) && 'true' == $comment['akismet_result'] ) {
|
|
// Lame: tightly coupled with the IXR classes. Unfortunately the action provides no context and no way to return anything.
|
|
$wp_xmlrpc_server->error( new IXR_Error( 0, 'Invalid discovery target' ) );
|
|
}
|
|
}
|
|
}
|
|
|
|
public static function pingback_forwarded_for( $r, $url ) {
|
|
static $urls = array();
|
|
|
|
// Call this with $r == null to prime the callback to add headers on a specific URL
|
|
if ( is_null( $r ) && !in_array( $url, $urls ) ) {
|
|
$urls[] = $url;
|
|
}
|
|
|
|
// Add X-Pingback-Forwarded-For header, but only for requests to a specific URL (the apparent pingback source)
|
|
if ( is_array( $r ) && is_array( $r['headers'] ) && !isset( $r['headers']['X-Pingback-Forwarded-For'] ) && in_array( $url, $urls ) ) {
|
|
$remote_ip = preg_replace( '/[^a-fx0-9:.,]/i', '', $_SERVER['REMOTE_ADDR'] );
|
|
|
|
// Note: this assumes REMOTE_ADDR is correct, and it may not be if a reverse proxy or CDN is in use
|
|
$r['headers']['X-Pingback-Forwarded-For'] = $remote_ip;
|
|
|
|
// Also identify the request as a pingback verification in the UA string so it appears in logs
|
|
$r['user-agent'] .= '; verifying pingback from ' . $remote_ip;
|
|
}
|
|
|
|
return $r;
|
|
}
|
|
|
|
/**
|
|
* Ensure that we are loading expected scalar values from akismet_as_submitted commentmeta.
|
|
*
|
|
* @param mixed $meta_value
|
|
* @return mixed
|
|
*/
|
|
private static function sanitize_comment_as_submitted( $meta_value ) {
|
|
if ( empty( $meta_value ) ) {
|
|
return $meta_value;
|
|
}
|
|
|
|
$meta_value = (array) $meta_value;
|
|
|
|
foreach ( $meta_value as $key => $value ) {
|
|
if ( ! isset( self::$comment_as_submitted_allowed_keys[$key] ) || ! is_scalar( $value ) ) {
|
|
unset( $meta_value[$key] );
|
|
}
|
|
}
|
|
|
|
return $meta_value;
|
|
}
|
|
}
|