- $ignore = array( 'HTTP_COOKIE', 'HTTP_COOKIE2', 'PHP_AUTH_PW' );
-
- foreach ( $_SERVER as $key => $value ) {
- if ( !in_array( $key, $ignore ) && is_string($value) )
- $comment["$key"] = $value;
- else
- $comment["$key"] = '';
- }
-
- $post = get_post( $comment['comment_post_ID'] );
- $comment[ 'comment_post_modified_gmt' ] = $post->post_modified_gmt;
-
- $query_string = '';
- foreach ( $comment as $key => $data )
- $query_string .= $key . '=' . urlencode( stripslashes($data) ) . '&';
-
- $commentdata['comment_as_submitted'] = $comment;
-
- $response = akismet_http_post($query_string, $akismet_api_host, '/1.1/comment-check', $akismet_api_port);
- do_action( 'akismet_comment_check_response', $response );
- akismet_update_alert( $response );
- $commentdata['akismet_result'] = $response[1];
- if ( 'true' == $response[1] ) {
- // akismet_spam_count will be incremented later by akismet_result_spam()
- add_filter('pre_comment_approved', 'akismet_result_spam');
-
- do_action( 'akismet_spam_caught' );
-
- $last_updated = strtotime( $post->post_modified_gmt );
- $diff = time() - $last_updated;
- $diff = $diff / 86400;
-
- if ( $post->post_type == 'post' && $diff > 30 && get_option( 'akismet_discard_month' ) == 'true' && empty($comment['user_ID']) ) {
- // akismet_result_spam() won't be called so bump the counter here
- if ( $incr = apply_filters('akismet_spam_count_incr', 1) )
- update_option( 'akismet_spam_count', get_option('akismet_spam_count') + $incr );
- $redirect_to = isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : get_permalink( $post );
- wp_safe_redirect( $redirect_to );
- die();
- }
- }
-
- // if the response is neither true nor false, hold the comment for moderation and schedule a recheck
- if ( 'true' != $response[1] && 'false' != $response[1] ) {
- if ( !current_user_can('moderate_comments') ) {
- add_filter('pre_comment_approved', 'akismet_result_hold');
- }
- if ( !wp_next_scheduled( 'akismet_schedule_cron_recheck' ) ) {
- wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' );
- }
- }
-
- if ( function_exists('wp_next_scheduled') && function_exists('wp_schedule_event') ) {
- // WP 2.1+: delete old comments daily
- if ( !wp_next_scheduled('akismet_scheduled_delete') )
- wp_schedule_event(time(), 'daily', 'akismet_scheduled_delete');
- } elseif ( (mt_rand(1, 10) == 3) ) {
- // WP 2.0: run this one time in ten
- akismet_delete_old();
- }
- $akismet_last_comment = $commentdata;
-
- akismet_fix_scheduled_recheck();
- return $commentdata;
-}
-
-add_action('preprocess_comment', 'akismet_auto_check_comment', 1);
-
-function akismet_get_ip_address() {
- foreach( array( 'HTTP_CLIENT_IP', 'HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_X_CLUSTER_CLIENT_IP', 'HTTP_FORWARDED_FOR', 'HTTP_FORWARDED', 'REMOTE_ADDR' ) as $key ) {
- if ( array_key_exists( $key, $_SERVER ) === true ) {
- foreach ( explode( ',', $_SERVER[$key] ) as $ip ) {
- $ip = trim($ip);
-
- if ( filter_var( $ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) !== false ) {
- return $ip;
- }
- }
- }
- }
- return null;
-}
-
-function akismet_delete_old() {
- global $wpdb;
-
- while( $comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_id FROM {$wpdb->comments} WHERE DATE_SUB(NOW(), INTERVAL 15 DAY) > comment_date_gmt AND comment_approved = 'spam' LIMIT %d", defined( 'AKISMET_DELETE_LIMIT' ) ? AKISMET_DELETE_LIMIT : 10000 ) ) ) {
- if ( empty( $comment_ids ) )
- return;
-
- $wpdb->queries = array();
-
- do_action( 'delete_comment', $comment_ids );
-
- $comma_comment_ids = implode( ', ', array_map('intval', $comment_ids) );
-
- $wpdb->query("DELETE FROM {$wpdb->comments} WHERE comment_id IN ( $comma_comment_ids )");
- $wpdb->query("DELETE FROM {$wpdb->commentmeta} WHERE comment_id IN ( $comma_comment_ids )");
-
- clean_comment_cache( $comment_ids );
- }
-
- if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11) ) ) // lucky number
- $wpdb->query("OPTIMIZE TABLE {$wpdb->comments}");
-}
-
-function akismet_delete_old_metadata() {
- global $wpdb;
-
- $interval = apply_filters( 'akismet_delete_commentmeta_interval', 15 );
-
- # enfore a minimum of 1 day
- $interval = absint( $interval );
- if ( $interval < 1 )
- $interval = 1;
-
- // akismet_as_submitted meta values are large, so expire them
- // after $interval days regardless of the comment status
- 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 ) ) ) {
- if ( empty( $comment_ids ) )
- return;
-
- $wpdb->queries = array();
-
- foreach ( $comment_ids as $comment_id ) {
- delete_comment_meta( $comment_id, 'akismet_as_submitted' );
- }
- }
-
- if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11) ) ) // lucky number
- $wpdb->query("OPTIMIZE TABLE {$wpdb->comments}");
-}
-
-add_action('akismet_scheduled_delete', 'akismet_delete_old');
-add_action('akismet_scheduled_delete', 'akismet_delete_old_metadata');
-
-function akismet_check_db_comment( $id, $recheck_reason = 'recheck_queue' ) {
- global $wpdb, $akismet_api_host, $akismet_api_port;
-
- $id = (int) $id;
- $c = $wpdb->get_row( "SELECT * FROM $wpdb->comments WHERE comment_ID = '$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']);
- $id = $c['comment_ID'];
- if ( akismet_test_mode() )
- $c['is_test'] = 'true';
- $c['recheck_reason'] = $recheck_reason;
-
- $query_string = '';
- foreach ( $c as $key => $data )
- $query_string .= $key . '=' . urlencode( stripslashes($data) ) . '&';
-
- $response = akismet_http_post($query_string, $akismet_api_host, '/1.1/comment-check', $akismet_api_port);
- return ( is_array( $response ) && isset( $response[1] ) ) ? $response[1] : false;
-}
-
-function akismet_cron_recheck() {
- global $wpdb;
-
- $status = akismet_verify_key( akismet_get_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' );
- return false;
- }
-
- delete_option('akismet_available_servers');
-
- $comment_errors = $wpdb->get_col( "
- SELECT comment_id
- FROM {$wpdb->prefix}commentmeta
- WHERE meta_key = 'akismet_error'
- LIMIT 100
- " );
-
- 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' );
- continue;
- }
-
- add_comment_meta( $comment_id, 'akismet_rechecking', true );
- $status = akismet_check_db_comment( $comment_id, 'retry' );
-
- $msg = '';
- if ( $status == 'true' ) {
- $msg = __( 'Akismet caught this comment as spam during an automatic retry.' );
- } elseif ( $status == 'false' ) {
- $msg = __( 'Akismet cleared this comment during an automatic retry.' );
- }
-
- // 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( $msg ) ) {
- delete_comment_meta( $comment_id, 'akismet_error' );
- akismet_update_comment_history( $comment_id, $msg, 'cron-retry' );
- 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 {
- delete_comment_meta( $comment_id, 'akismet_rechecking' );
- wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' );
- 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' );
- }
-}
-add_action( 'akismet_schedule_cron_recheck', 'akismet_cron_recheck' );
-
-function akismet_add_comment_nonce( $post_id ) {
- echo '<p style="display: none;">';
- wp_nonce_field( 'akismet_comment_nonce_' . $post_id, 'akismet_comment_nonce', FALSE );
- echo '</p>';
-}
-
-$akismet_comment_nonce_option = apply_filters( 'akismet_comment_nonce', get_option( 'akismet_comment_nonce' ) );
-
-if ( $akismet_comment_nonce_option == 'true' || $akismet_comment_nonce_option == '' )
- add_action( 'comment_form', 'akismet_add_comment_nonce' );
-
-function akismet_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;
-}
-
-function akismet_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', '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' ) );
- }
- }
-}
-
-// Run this early in the pingback call, before doing a remote fetch of the source uri
-add_action( 'xmlrpc_call', 'akismet_pre_check_pingback' );
-
-global $wp_version;
-if ( '3.0.5' == $wp_version ) {
- remove_filter( 'comment_text', 'wp_kses_data' );
- if ( is_admin() )
- add_filter( 'comment_text', 'wp_kses_post' );
-}
-
-function akismet_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' );
- }
-}