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1425 lines
53 KiB
1425 lines
53 KiB
<?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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private static $is_rest_api_call = false; |
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public static function init() { |
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if ( ! self::$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_filter( 'rest_pre_insert_comment', array( 'Akismet', 'rest_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_scheduled_delete', array( 'Akismet', 'delete_orphaned_commentmeta' ) ); |
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add_action( 'akismet_schedule_cron_recheck', array( 'Akismet', 'cron_recheck' ) ); |
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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( 'script_loader_tag', array( 'Akismet', 'set_form_js_async' ), 10, 3 ); |
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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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add_action( 'add_option_wordpress_api_key', array( 'Akismet', 'added_option' ), 10, 2 ); |
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add_action( 'comment_form_after', array( 'Akismet', 'display_comment_form_privacy_notice' ) ); |
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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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// Shortcut for obviously invalid keys. |
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if ( strlen( $key ) != 12 ) { |
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return 'invalid'; |
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} |
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$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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/** |
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* Treat the creation of an API key the same as updating the API key to a new value. |
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* |
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* @param mixed $option_name Will always be "wordpress_api_key", until something else hooks in here. |
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* @param mixed $value The option value. |
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*/ |
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public static function added_option( $option_name, $value ) { |
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if ( 'wordpress_api_key' === $option_name ) { |
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return self::updated_option( '', $value ); |
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} |
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} |
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public static function rest_auto_check_comment( $commentdata ) { |
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self::$is_rest_api_call = true; |
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return self::auto_check_comment( $commentdata ); |
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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( $comment['user_ID'] ); |
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} |
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/** See filter documentation in init_hooks(). */ |
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$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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if ( ! is_null( $post ) ) { |
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// $post can technically be null, although in the past, it's always been an indicator of another plugin interfering. |
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$comment[ 'comment_post_modified_gmt' ] = $post->post_modified_gmt; |
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} |
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$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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// The spam is obvious, so we're bailing out early. |
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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' ) + $incr ); |
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} |
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if ( self::$is_rest_api_call ) { |
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return new WP_Error( 'akismet_rest_comment_discarded', __( 'Comment discarded.', 'akismet' ) ); |
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} |
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else { |
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// Redirect back to the previous page, or failing that, the post permalink, or failing that, the homepage of the blog. |
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$redirect_to = isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : ( $post ? get_permalink( $post ) : home_url() ); |
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wp_safe_redirect( esc_url_raw( $redirect_to ) ); |
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die(); |
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} |
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} |
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else if ( self::$is_rest_api_call ) { |
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// The way the REST API structures its calls, we can set the comment_approved value right away. |
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$commentdata['comment_approved'] = 'spam'; |
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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 ( ! 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-' . $response[1] ); |
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} |
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self::$prevent_moderation_email_for_these_comments[] = $commentdata; |
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} |
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// 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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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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// 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', $comment_id ); |
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do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
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} |
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// Prepared as strings since comment_id is an unsigned BIGINT, and using %d will constrain the value to the maximum signed BIGINT. |
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$format_string = implode( ", ", array_fill( 0, count( $comment_ids ), '%s' ) ); |
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$wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->comments} WHERE comment_id IN ( " . $format_string . " )", $comment_ids ) ); |
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$wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->commentmeta} WHERE comment_id IN ( " . $format_string . " )", $comment_ids ) ); |
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clean_comment_cache( $comment_ids ); |
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do_action( 'akismet_delete_comment_batch', count( $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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# enforce 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( $comment_ids ) ) |
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return; |
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|
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$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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do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
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} |
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do_action( 'akismet_delete_commentmeta_batch', count( $comment_ids ) ); |
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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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// Clear out comments meta that no longer have corresponding comments in the database |
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public static function delete_orphaned_commentmeta() { |
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global $wpdb; |
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|
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$last_meta_id = 0; |
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$start_time = isset( $_SERVER['REQUEST_TIME_FLOAT'] ) ? $_SERVER['REQUEST_TIME_FLOAT'] : microtime( true ); |
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$max_exec_time = max( ini_get('max_execution_time') - 5, 3 ); |
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while ( $commentmeta_results = $wpdb->get_results( $wpdb->prepare( "SELECT m.meta_id, m.comment_id, m.meta_key FROM {$wpdb->commentmeta} as m LEFT JOIN {$wpdb->comments} as c USING(comment_id) WHERE c.comment_id IS NULL AND m.meta_id > %d ORDER BY m.meta_id LIMIT 1000", $last_meta_id ) ) ) { |
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if ( empty( $commentmeta_results ) ) |
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return; |
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|
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$wpdb->queries = array(); |
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$commentmeta_deleted = 0; |
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|
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foreach ( $commentmeta_results as $commentmeta ) { |
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if ( 'akismet_' == substr( $commentmeta->meta_key, 0, 8 ) ) { |
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delete_comment_meta( $commentmeta->comment_id, $commentmeta->meta_key ); |
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do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
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$commentmeta_deleted++; |
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} |
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$last_meta_id = $commentmeta->meta_id; |
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} |
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do_action( 'akismet_delete_commentmeta_batch', $commentmeta_deleted ); |
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|
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// If we're getting close to max_execution_time, quit for this round. |
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if ( microtime(true) - $start_time > $max_exec_time ) |
|
return; |
|
} |
|
|
|
if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->commentmeta ) ) // lucky number |
|
$wpdb->query("OPTIMIZE TABLE {$wpdb->commentmeta}"); |
|
} |
|
|
|
// how many approved comments does this author have? |
|
public static function get_user_comments_approved( $user_id, $comment_author_email, $comment_author, $comment_author_url ) { |
|
global $wpdb; |
|
|
|
if ( !empty( $user_id ) ) |
|
return (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM {$wpdb->comments} WHERE user_id = %d AND comment_approved = 1", $user_id ) ); |
|
|
|
if ( !empty( $comment_author_email ) ) |
|
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 ) ); |
|
|
|
return 0; |
|
} |
|
|
|
// get the full comment history for a given comment, as an array in reverse chronological order |
|
public static function get_comment_history( $comment_id ) { |
|
$history = get_comment_meta( $comment_id, 'akismet_history', false ); |
|
usort( $history, array( 'Akismet', '_cmp_time' ) ); |
|
return $history; |
|
} |
|
|
|
/** |
|
* 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; |
|
|
|
$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 new WP_Error( 'invalid-comment-id', __( 'Comment not found.', 'akismet' ) ); |
|
} |
|
|
|
$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; |
|
|
|
$c['user_role'] = ''; |
|
if ( ! empty( $c['user_ID'] ) ) { |
|
$c['user_role'] = Akismet::get_user_roles( $c['user_ID'] ); |
|
} |
|
|
|
if ( self::is_test_mode() ) |
|
$c['is_test'] = 'true'; |
|
|
|
$response = self::http_post( Akismet::build_query( $c ), 'comment-check' ); |
|
|
|
if ( ! empty( $response[1] ) ) { |
|
return $response[1]; |
|
} |
|
|
|
return false; |
|
} |
|
|
|
public static function recheck_comment( $id, $recheck_reason = 'recheck_queue' ) { |
|
add_comment_meta( $id, 'akismet_rechecking', true ); |
|
|
|
$api_response = self::check_db_comment( $id, $recheck_reason ); |
|
|
|
delete_comment_meta( $id, 'akismet_rechecking' ); |
|
|
|
if ( is_wp_error( $api_response ) ) { |
|
// Invalid comment ID. |
|
} |
|
else if ( 'true' === $api_response ) { |
|
wp_set_comment_status( $id, 'spam' ); |
|
update_comment_meta( $id, 'akismet_result', 'true' ); |
|
delete_comment_meta( $id, 'akismet_error' ); |
|
delete_comment_meta( $id, 'akismet_delayed_moderation_email' ); |
|
Akismet::update_comment_history( $id, '', 'recheck-spam' ); |
|
} |
|
elseif ( 'false' === $api_response ) { |
|
update_comment_meta( $id, 'akismet_result', 'false' ); |
|
delete_comment_meta( $id, 'akismet_error' ); |
|
delete_comment_meta( $id, 'akismet_delayed_moderation_email' ); |
|
Akismet::update_comment_history( $id, '', 'recheck-ham' ); |
|
} |
|
else { |
|
// abnormal result: error |
|
update_comment_meta( $id, 'akismet_result', 'error' ); |
|
Akismet::update_comment_history( |
|
$id, |
|
'', |
|
'recheck-error', |
|
array( 'response' => substr( $api_response, 0, 50 ) ) |
|
); |
|
} |
|
|
|
return $api_response; |
|
} |
|
|
|
public static function transition_comment_status( $new_status, $old_status, $comment ) { |
|
|
|
if ( $new_status == $old_status ) |
|
return; |
|
|
|
if ( 'spam' === $new_status || 'spam' === $old_status ) { |
|
// Clear the cache of the "X comments in your spam queue" count on the dashboard. |
|
wp_cache_delete( 'akismet_spam_count', 'widget' ); |
|
} |
|
|
|
# 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; |
|
|
|
// 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 ( |
|
// status=spam: Marking as spam via the REST API or... |
|
// status=unspam: I'm not sure. Maybe this used to be used instead of status=approved? Or the UI for removing from spam but not approving has been since removed?... |
|
// status=approved: Unspamming via the REST API (Calypso) or... |
|
( isset( $_POST['status'] ) && in_array( $_POST['status'], array( 'spam', 'unspam', 'approved', ) ) ) |
|
// spam=1: Clicking "Spam" underneath a comment in wp-admin and allowing the AJAX request to happen. |
|
|| ( isset( $_POST['spam'] ) && (int) $_POST['spam'] == 1 ) |
|
// unspam=1: Clicking "Not Spam" underneath a comment in wp-admin and allowing the AJAX request to happen. Or, clicking "Undo" after marking something as spam. |
|
|| ( isset( $_POST['unspam'] ) && (int) $_POST['unspam'] == 1 ) |
|
// comment_status=spam/unspam: It's unclear where this is happening. |
|
|| ( isset( $_POST['comment_status'] ) && in_array( $_POST['comment_status'], array( 'spam', 'unspam' ) ) ) |
|
// action=spam: Choosing "Mark as Spam" from the Bulk Actions dropdown in wp-admin (or the "Spam it" link in notification emails). |
|
// action=unspam: Choosing "Not Spam" from the Bulk Actions dropdown in wp-admin. |
|
// action=spamcomment: Following the "Spam" link below a comment in wp-admin (not allowing AJAX request to happen). |
|
// action=unspamcomment: Following the "Not Spam" link below a comment in wp-admin (not allowing AJAX request to happen). |
|
|| ( isset( $_GET['action'] ) && in_array( $_GET['action'], array( 'spam', 'unspam', 'spamcomment', 'unspamcomment', ) ) ) |
|
// action=editedcomment: Editing a comment via wp-admin (and possibly changing its status). |
|
|| ( isset( $_POST['action'] ) && in_array( $_POST['action'], array( 'editedcomment' ) ) ) |
|
// for=jetpack: Moderation via the WordPress app, Calypso, anything powered by the Jetpack connection. |
|
|| ( isset( $_GET['for'] ) && ( 'jetpack' == $_GET['for'] ) && ( ! defined( 'IS_WPCOM' ) || ! IS_WPCOM ) ) |
|
// Certain WordPress.com API requests |
|
|| ( defined( 'REST_API_REQUEST' ) && REST_API_REQUEST ) |
|
// WordPress.org REST API requests |
|
|| ( defined( 'REST_REQUEST' ) && REST_REQUEST ) |
|
) { |
|
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_option( 'home' ); |
|
$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 ( ! empty( $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 ); |
|
|
|
if ( ! is_null( $post ) ) { |
|
$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_option( 'home' ); |
|
$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 ( ! empty( $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 ); |
|
|
|
if ( ! is_null( $post ) ) { |
|
$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 // Comment has been deleted |
|
|| strtotime( $comment->comment_date_gmt ) < strtotime( "-15 days" ) // Comment is too old. |
|
|| $comment->comment_approved !== "0" // Comment is no longer in the Pending queue |
|
) { |
|
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 ) { |
|
/** |
|
* To disable the Akismet comment nonce, add a filter for the 'akismet_comment_nonce' tag |
|
* and return any string value that is not 'true' or '' (empty string). |
|
* |
|
* Don't return boolean false, because that implies that the 'akismet_comment_nonce' option |
|
* has not been set and that Akismet should just choose the default behavior for that |
|
* situation. |
|
*/ |
|
$akismet_comment_nonce_option = apply_filters( 'akismet_comment_nonce', get_option( 'akismet_comment_nonce' ) ); |
|
|
|
if ( $akismet_comment_nonce_option == 'true' || $akismet_comment_nonce_option == '' ) { |
|
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; |
|
|
|
// Set default values for these strings that we check in order to simplify |
|
// the checks and avoid PHP warnings. |
|
if ( ! isset( $comment1['comment_author'] ) ) { |
|
$comment1['comment_author'] = ''; |
|
} |
|
|
|
if ( ! isset( $comment2['comment_author'] ) ) { |
|
$comment2['comment_author'] = ''; |
|
} |
|
|
|
if ( ! isset( $comment1['comment_author_email'] ) ) { |
|
$comment1['comment_author_email'] = ''; |
|
} |
|
|
|
if ( ! isset( $comment2['comment_author_email'] ) ) { |
|
$comment2['comment_author_email'] = ''; |
|
} |
|
|
|
$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( $comment ) { |
|
return self::comments_match( self::$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; |
|
} |
|
|
|
if ( 'trash' === $approved ) { |
|
// If the last comment we checked has had its approval set to 'trash', |
|
// then it failed the comment blacklist check. Let that blacklist override |
|
// the spam check, since users have the (valid) expectation that when |
|
// they fill out their blacklists, comments that match it will always |
|
// end up in the trash. |
|
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 && ( $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. |
|
public 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() { |
|
if ( function_exists( 'is_amp_endpoint' ) && is_amp_endpoint() ) { |
|
return; |
|
} |
|
|
|
wp_register_script( 'akismet-form', plugin_dir_url( __FILE__ ) . '_inc/form.js', array(), AKISMET_VERSION, true ); |
|
wp_enqueue_script( 'akismet-form' ); |
|
} |
|
|
|
/** |
|
* Mark form.js as async. Because nothing depends on it, it can run at any time |
|
* after it's loaded, and the browser won't have to wait for it to load to continue |
|
* parsing the rest of the page. |
|
*/ |
|
public static function set_form_js_async( $tag, $handle, $src ) { |
|
if ( 'akismet-form' !== $handle ) { |
|
return $tag; |
|
} |
|
|
|
return preg_replace( '/^<script /i', '<script async="async" ', $tag ); |
|
} |
|
|
|
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> |
|
</head> |
|
<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 ); |
|
} else { |
|
add_option( 'Activated_Akismet', true ); |
|
} |
|
} |
|
|
|
/** |
|
* Removes all connection options |
|
* @static |
|
*/ |
|
public static function plugin_deactivation( ) { |
|
self::deactivate_key( self::get_api_key() ); |
|
|
|
// Remove any scheduled cron jobs. |
|
$akismet_cron_events = array( |
|
'akismet_schedule_cron_recheck', |
|
'akismet_scheduled_delete', |
|
); |
|
|
|
foreach ( $akismet_cron_events as $akismet_cron_event ) { |
|
$timestamp = wp_next_scheduled( $akismet_cron_event ); |
|
|
|
if ( $timestamp ) { |
|
wp_unschedule_event( $timestamp, $akismet_cron_event ); |
|
} |
|
} |
|
} |
|
|
|
/** |
|
* 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 && defined( 'AKISMET_DEBUG' ) && AKISMET_DEBUG ) ) { |
|
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 pingbacks aren't open on this post, we'll still check whether this request is part of a potential DDOS, |
|
// but indicate to the server that pingbacks are indeed closed so we don't include this request in the user's stats, |
|
// since the user has already done their part by disabling pingbacks. |
|
$pingbacks_closed = false; |
|
|
|
$post = get_post( $post_id ); |
|
|
|
if ( ! $post || ! pings_open( $post ) ) { |
|
$pingbacks_closed = true; |
|
} |
|
|
|
$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], |
|
'pingbacks_closed' => $pingbacks_closed ? '1' : '0', |
|
); |
|
|
|
$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' ) ); |
|
} |
|
} |
|
} |
|
|
|
/** |
|
* 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; |
|
} |
|
|
|
public static function predefined_api_key() { |
|
if ( defined( 'WPCOM_API_KEY' ) ) { |
|
return true; |
|
} |
|
|
|
return apply_filters( 'akismet_predefined_api_key', false ); |
|
} |
|
|
|
/** |
|
* Controls the display of a privacy related notice underneath the comment form using the `akismet_comment_form_privacy_notice` option and filter respectively. |
|
* Default is top not display the notice, leaving the choice to site admins, or integrators. |
|
*/ |
|
public static function display_comment_form_privacy_notice() { |
|
if ( 'display' !== apply_filters( 'akismet_comment_form_privacy_notice', get_option( 'akismet_comment_form_privacy_notice', 'hide' ) ) ) { |
|
return; |
|
} |
|
echo apply_filters( |
|
'akismet_comment_form_privacy_notice_markup', |
|
'<p class="akismet_comment_form_privacy_notice">' . sprintf( |
|
__( 'This site uses Akismet to reduce spam. <a href="%s" target="_blank" rel="nofollow noopener">Learn how your comment data is processed</a>.', 'akismet' ), |
|
'https://akismet.com/privacy/' |
|
) . '</p>' |
|
); |
|
} |
|
}
|
|
|