4 const API_HOST = 'rest.akismet.com';
6 const MAX_DELAY_BEFORE_MODERATION_EMAIL = 86400; // One day in seconds
8 private static $last_comment = '';
9 private static $initiated = false;
10 private static $prevent_moderation_email_for_these_comments = array();
11 private static $last_comment_result = null;
13 public static function init() {
14 if ( ! self::$initiated ) {
20 * Initializes WordPress hooks
22 private static function init_hooks() {
23 self::$initiated = true;
25 add_action( 'wp_insert_comment', array( 'Akismet', 'auto_check_update_meta' ), 10, 2 );
26 add_action( 'preprocess_comment', array( 'Akismet', 'auto_check_comment' ), 1 );
27 add_action( 'akismet_scheduled_delete', array( 'Akismet', 'delete_old_comments' ) );
28 add_action( 'akismet_scheduled_delete', array( 'Akismet', 'delete_old_comments_meta' ) );
29 add_action( 'akismet_schedule_cron_recheck', array( 'Akismet', 'cron_recheck' ) );
31 $akismet_comment_nonce_option = apply_filters( 'akismet_comment_nonce', get_option( 'akismet_comment_nonce' ) );
33 if ( $akismet_comment_nonce_option == 'true' || $akismet_comment_nonce_option == '' )
34 add_action( 'comment_form', array( 'Akismet', 'add_comment_nonce' ), 1 );
36 add_action( 'admin_head-edit-comments.php', array( 'Akismet', 'load_form_js' ) );
37 add_action( 'comment_form', array( 'Akismet', 'load_form_js' ) );
38 add_action( 'comment_form', array( 'Akismet', 'inject_ak_js' ) );
40 add_filter( 'comment_moderation_recipients', array( 'Akismet', 'disable_moderation_emails_if_unreachable' ), 1000, 2 );
41 add_filter( 'pre_comment_approved', array( 'Akismet', 'last_comment_status' ), 10, 2 );
43 add_action( 'transition_comment_status', array( 'Akismet', 'transition_comment_status' ), 10, 3 );
45 if ( '3.0.5' == $GLOBALS['wp_version'] ) {
46 remove_filter( 'comment_text', 'wp_kses_data' );
48 add_filter( 'comment_text', 'wp_kses_post' );
52 public static function get_api_key() {
53 return apply_filters( 'akismet_get_api_key', defined('WPCOM_API_KEY') ? constant('WPCOM_API_KEY') : get_option('wordpress_api_key') );
56 public static function check_key_status( $key, $ip = null ) {
57 return self::http_post( Akismet::build_query( array( 'key' => $key, 'blog' => get_option('home') ) ), 'verify-key', $ip );
60 public static function verify_key( $key, $ip = null ) {
61 $response = self::check_key_status( $key, $ip );
63 if ( $response[1] != 'valid' && $response[1] != 'invalid' )
66 self::update_alert( $response );
71 public static function auto_check_comment( $commentdata ) {
72 self::$last_comment_result = null;
74 $comment = $commentdata;
76 $comment['user_ip'] = self::get_ip_address();
77 $comment['user_agent'] = self::get_user_agent();
78 $comment['referrer'] = self::get_referer();
79 $comment['blog'] = get_option('home');
80 $comment['blog_lang'] = get_locale();
81 $comment['blog_charset'] = get_option('blog_charset');
82 $comment['permalink'] = get_permalink( $comment['comment_post_ID'] );
84 if ( !empty( $comment['user_ID'] ) )
85 $comment['user_role'] = Akismet::get_user_roles( $comment['user_ID'] );
87 $akismet_nonce_option = apply_filters( 'akismet_comment_nonce', get_option( 'akismet_comment_nonce' ) );
88 $comment['akismet_comment_nonce'] = 'inactive';
89 if ( $akismet_nonce_option == 'true' || $akismet_nonce_option == '' ) {
90 $comment['akismet_comment_nonce'] = 'failed';
91 if ( isset( $_POST['akismet_comment_nonce'] ) && wp_verify_nonce( $_POST['akismet_comment_nonce'], 'akismet_comment_nonce_' . $comment['comment_post_ID'] ) )
92 $comment['akismet_comment_nonce'] = 'passed';
94 // comment reply in wp-admin
95 if ( isset( $_POST['_ajax_nonce-replyto-comment'] ) && check_ajax_referer( 'replyto-comment', '_ajax_nonce-replyto-comment' ) )
96 $comment['akismet_comment_nonce'] = 'passed';
100 if ( self::is_test_mode() )
101 $comment['is_test'] = 'true';
103 foreach( $_POST as $key => $value ) {
104 if ( is_string( $value ) )
105 $comment["POST_{$key}"] = $value;
108 $ignore = array( 'HTTP_COOKIE', 'HTTP_COOKIE2', 'PHP_AUTH_PW' );
110 foreach ( $_SERVER as $key => $value ) {
111 if ( !in_array( $key, $ignore ) && is_string($value) )
112 $comment["$key"] = $value;
114 $comment["$key"] = '';
117 $post = get_post( $comment['comment_post_ID'] );
118 $comment[ 'comment_post_modified_gmt' ] = $post->post_modified_gmt;
120 $response = self::http_post( Akismet::build_query( $comment ), 'comment-check' );
122 do_action( 'akismet_comment_check_response', $response );
124 self::update_alert( $response );
126 $commentdata['comment_as_submitted'] = array_intersect_key( $comment, 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' => '' ) );
127 $commentdata['akismet_result'] = $response[1];
129 if ( isset( $response[0]['x-akismet-pro-tip'] ) )
130 $commentdata['akismet_pro_tip'] = $response[0]['x-akismet-pro-tip'];
132 if ( isset( $response[0]['x-akismet-error'] ) ) {
133 // An error occurred that we anticipated (like a suspended key) and want the user to act on.
134 // Send to moderation.
135 self::$last_comment_result = '0';
137 else if ( 'true' == $response[1] ) {
138 // akismet_spam_count will be incremented later by comment_is_spam()
139 self::$last_comment_result = 'spam';
141 $discard = ( isset( $commentdata['akismet_pro_tip'] ) && $commentdata['akismet_pro_tip'] === 'discard' && self::allow_discard() );
143 do_action( 'akismet_spam_caught', $discard );
146 // akismet_result_spam() won't be called so bump the counter here
147 if ( $incr = apply_filters('akismet_spam_count_incr', 1) )
148 update_option( 'akismet_spam_count', get_option('akismet_spam_count') + $incr );
149 $redirect_to = isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : get_permalink( $post );
150 wp_safe_redirect( esc_url_raw( $redirect_to ) );
155 // if the response is neither true nor false, hold the comment for moderation and schedule a recheck
156 if ( 'true' != $response[1] && 'false' != $response[1] ) {
157 if ( !current_user_can('moderate_comments') ) {
158 // Comment status should be moderated
159 self::$last_comment_result = '0';
161 if ( function_exists('wp_next_scheduled') && function_exists('wp_schedule_single_event') ) {
162 if ( !wp_next_scheduled( 'akismet_schedule_cron_recheck' ) ) {
163 wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' );
167 self::$prevent_moderation_email_for_these_comments[] = $commentdata;
170 if ( function_exists('wp_next_scheduled') && function_exists('wp_schedule_event') ) {
171 // WP 2.1+: delete old comments daily
172 if ( !wp_next_scheduled( 'akismet_scheduled_delete' ) )
173 wp_schedule_event( time(), 'daily', 'akismet_scheduled_delete' );
175 elseif ( (mt_rand(1, 10) == 3) ) {
176 // WP 2.0: run this one time in ten
177 self::delete_old_comments();
180 self::set_last_comment( $commentdata );
181 self::fix_scheduled_recheck();
183 return self::$last_comment;
186 public static function get_last_comment() {
187 return self::$last_comment;
190 public static function set_last_comment( $comment ) {
191 if ( is_null( $comment ) ) {
192 self::$last_comment = null;
195 // We filter it here so that it matches the filtered comment data that we'll have to compare against later.
196 // wp_filter_comment expects comment_author_IP
197 self::$last_comment = wp_filter_comment(
199 array( 'comment_author_IP' => self::get_ip_address() ),
206 // this fires on wp_insert_comment. we can't update comment_meta when auto_check_comment() runs
207 // because we don't know the comment ID at that point.
208 public static function auto_check_update_meta( $id, $comment ) {
210 // failsafe for old WP versions
211 if ( !function_exists('add_comment_meta') )
214 if ( !isset( self::$last_comment['comment_author_email'] ) )
215 self::$last_comment['comment_author_email'] = '';
217 // wp_insert_comment() might be called in other contexts, so make sure this is the same comment
218 // as was checked by auto_check_comment
219 if ( is_object( $comment ) && !empty( self::$last_comment ) && is_array( self::$last_comment ) ) {
220 if ( self::matches_last_comment( $comment ) ) {
222 load_plugin_textdomain( 'akismet' );
224 // normal result: true or false
225 if ( self::$last_comment['akismet_result'] == 'true' ) {
226 update_comment_meta( $comment->comment_ID, 'akismet_result', 'true' );
227 self::update_comment_history( $comment->comment_ID, __('Akismet caught this comment as spam', 'akismet'), 'check-spam' );
228 if ( $comment->comment_approved != 'spam' )
229 self::update_comment_history( $comment->comment_ID, sprintf( __('Comment status was changed to %s', 'akismet'), $comment->comment_approved), 'status-changed'.$comment->comment_approved );
231 elseif ( self::$last_comment['akismet_result'] == 'false' ) {
232 update_comment_meta( $comment->comment_ID, 'akismet_result', 'false' );
233 self::update_comment_history( $comment->comment_ID, __('Akismet cleared this comment', 'akismet'), 'check-ham' );
234 if ( $comment->comment_approved == 'spam' ) {
235 if ( wp_blacklist_check($comment->comment_author, $comment->comment_author_email, $comment->comment_author_url, $comment->comment_content, $comment->comment_author_IP, $comment->comment_agent) )
236 self::update_comment_history( $comment->comment_ID, __('Comment was caught by wp_blacklist_check', 'akismet'), 'wp-blacklisted' );
238 self::update_comment_history( $comment->comment_ID, sprintf( __('Comment status was changed to %s', 'akismet'), $comment->comment_approved), 'status-changed-'.$comment->comment_approved );
240 } // abnormal result: error
242 update_comment_meta( $comment->comment_ID, 'akismet_error', time() );
243 self::update_comment_history( $comment->comment_ID, sprintf( __('Akismet was unable to check this comment (response: %s), will automatically retry again later.', 'akismet'), substr(self::$last_comment['akismet_result'], 0, 50)), 'check-error' );
246 // record the complete original data as submitted for checking
247 if ( isset( self::$last_comment['comment_as_submitted'] ) )
248 update_comment_meta( $comment->comment_ID, 'akismet_as_submitted', self::$last_comment['comment_as_submitted'] );
250 if ( isset( self::$last_comment['akismet_pro_tip'] ) )
251 update_comment_meta( $comment->comment_ID, 'akismet_pro_tip', self::$last_comment['akismet_pro_tip'] );
256 public static function delete_old_comments() {
259 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 ) ) ) {
260 if ( empty( $comment_ids ) )
263 $wpdb->queries = array();
265 do_action( 'delete_comment', $comment_ids );
267 $comma_comment_ids = implode( ', ', array_map('intval', $comment_ids) );
269 $wpdb->query("DELETE FROM {$wpdb->comments} WHERE comment_id IN ( $comma_comment_ids )");
270 $wpdb->query("DELETE FROM {$wpdb->commentmeta} WHERE comment_id IN ( $comma_comment_ids )");
272 clean_comment_cache( $comment_ids );
275 if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->comments ) ) // lucky number
276 $wpdb->query("OPTIMIZE TABLE {$wpdb->comments}");
279 public static function delete_old_comments_meta() {
282 $interval = apply_filters( 'akismet_delete_commentmeta_interval', 15 );
284 # enfore a minimum of 1 day
285 $interval = absint( $interval );
289 // akismet_as_submitted meta values are large, so expire them
290 // after $interval days regardless of the comment status
291 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 ) ) ) {
292 if ( empty( $comment_ids ) )
295 $wpdb->queries = array();
297 foreach ( $comment_ids as $comment_id ) {
298 delete_comment_meta( $comment_id, 'akismet_as_submitted' );
302 if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->commentmeta ) ) // lucky number
303 $wpdb->query("OPTIMIZE TABLE {$wpdb->commentmeta}");
306 // how many approved comments does this author have?
307 public static function get_user_comments_approved( $user_id, $comment_author_email, $comment_author, $comment_author_url ) {
310 if ( !empty( $user_id ) )
311 return (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM {$wpdb->comments} WHERE user_id = %d AND comment_approved = 1", $user_id ) );
313 if ( !empty( $comment_author_email ) )
314 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 ) );
319 // get the full comment history for a given comment, as an array in reverse chronological order
320 public static function get_comment_history( $comment_id ) {
322 // failsafe for old WP versions
323 if ( !function_exists('add_comment_meta') )
326 $history = get_comment_meta( $comment_id, 'akismet_history', false );
327 usort( $history, array( 'Akismet', '_cmp_time' ) );
331 // log an event for a given comment, storing it in comment_meta
332 public static function update_comment_history( $comment_id, $message, $event=null ) {
333 global $current_user;
335 // failsafe for old WP versions
336 if ( !function_exists('add_comment_meta') )
340 if ( is_object( $current_user ) && isset( $current_user->user_login ) )
341 $user = $current_user->user_login;
344 'time' => self::_get_microtime(),
345 'message' => $message,
350 // $unique = false so as to allow multiple values per comment
351 $r = add_comment_meta( $comment_id, 'akismet_history', $event, false );
354 public static function check_db_comment( $id, $recheck_reason = 'recheck_queue' ) {
357 $c = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->comments} WHERE comment_ID = %d", $id ), ARRAY_A );
361 $c['user_ip'] = $c['comment_author_IP'];
362 $c['user_agent'] = $c['comment_agent'];
364 $c['blog'] = get_option('home');
365 $c['blog_lang'] = get_locale();
366 $c['blog_charset'] = get_option('blog_charset');
367 $c['permalink'] = get_permalink($c['comment_post_ID']);
368 $c['recheck_reason'] = $recheck_reason;
370 if ( self::is_test_mode() )
371 $c['is_test'] = 'true';
373 $response = self::http_post( Akismet::build_query( $c ), 'comment-check' );
375 return ( is_array( $response ) && ! empty( $response[1] ) ) ? $response[1] : false;
380 public static function transition_comment_status( $new_status, $old_status, $comment ) {
382 if ( $new_status == $old_status )
385 # we don't need to record a history item for deleted comments
386 if ( $new_status == 'delete' )
389 if ( !current_user_can( 'edit_post', $comment->comment_post_ID ) && !current_user_can( 'moderate_comments' ) )
392 if ( defined('WP_IMPORTING') && WP_IMPORTING == true )
395 // if this is present, it means the status has been changed by a re-check, not an explicit user action
396 if ( get_comment_meta( $comment->comment_ID, 'akismet_rechecking' ) )
399 global $current_user;
401 if ( is_object( $current_user ) )
402 $reporter = $current_user->user_login;
405 // We want to submit comments to Akismet only when a moderator explicitly spams or approves it - not if the status
406 // is changed automatically by another plugin. Unfortunately WordPress doesn't provide an unambiguous way to
407 // determine why the transition_comment_status action was triggered. And there are several different ways by which
408 // to spam and unspam comments: bulk actions, ajax, links in moderation emails, the dashboard, and perhaps others.
409 // We'll assume that this is an explicit user action if certain POST/GET variables exist.
410 if ( ( isset( $_POST['status'] ) && in_array( $_POST['status'], array( 'spam', 'unspam' ) ) ) ||
411 ( isset( $_POST['spam'] ) && (int) $_POST['spam'] == 1 ) ||
412 ( isset( $_POST['unspam'] ) && (int) $_POST['unspam'] == 1 ) ||
413 ( isset( $_POST['comment_status'] ) && in_array( $_POST['comment_status'], array( 'spam', 'unspam' ) ) ) ||
414 ( isset( $_GET['action'] ) && in_array( $_GET['action'], array( 'spam', 'unspam' ) ) ) ||
415 ( isset( $_POST['action'] ) && in_array( $_POST['action'], array( 'editedcomment' ) ) )
417 if ( $new_status == 'spam' && ( $old_status == 'approved' || $old_status == 'unapproved' || !$old_status ) ) {
418 return self::submit_spam_comment( $comment->comment_ID );
419 } elseif ( $old_status == 'spam' && ( $new_status == 'approved' || $new_status == 'unapproved' ) ) {
420 return self::submit_nonspam_comment( $comment->comment_ID );
424 self::update_comment_history( $comment->comment_ID, sprintf( __('%1$s changed the comment status to %2$s', 'akismet'), $reporter, $new_status ), 'status-' . $new_status );
427 public static function submit_spam_comment( $comment_id ) {
428 global $wpdb, $current_user, $current_site;
430 $comment_id = (int) $comment_id;
432 $comment = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->comments} WHERE comment_ID = %d", $comment_id ) );
434 if ( !$comment ) // it was deleted
437 if ( 'spam' != $comment->comment_approved )
440 // use the original version stored in comment_meta if available
441 $as_submitted = get_comment_meta( $comment_id, 'akismet_as_submitted', true);
443 if ( $as_submitted && is_array( $as_submitted ) && isset( $as_submitted['comment_content'] ) )
444 $comment = (object) array_merge( (array)$comment, $as_submitted );
446 $comment->blog = get_bloginfo('url');
447 $comment->blog_lang = get_locale();
448 $comment->blog_charset = get_option('blog_charset');
449 $comment->permalink = get_permalink($comment->comment_post_ID);
451 if ( is_object($current_user) )
452 $comment->reporter = $current_user->user_login;
454 if ( is_object($current_site) )
455 $comment->site_domain = $current_site->domain;
457 $comment->user_role = '';
458 if ( isset( $comment->user_ID ) )
459 $comment->user_role = Akismet::get_user_roles( $comment->user_ID );
461 if ( self::is_test_mode() )
462 $comment->is_test = 'true';
464 $post = get_post( $comment->comment_post_ID );
465 $comment->comment_post_modified_gmt = $post->post_modified_gmt;
467 $response = Akismet::http_post( Akismet::build_query( $comment ), 'submit-spam' );
468 if ( $comment->reporter ) {
469 self::update_comment_history( $comment_id, sprintf( __('%s reported this comment as spam', 'akismet'), $comment->reporter ), 'report-spam' );
470 update_comment_meta( $comment_id, 'akismet_user_result', 'true' );
471 update_comment_meta( $comment_id, 'akismet_user', $comment->reporter );
474 do_action('akismet_submit_spam_comment', $comment_id, $response[1]);
477 public static function submit_nonspam_comment( $comment_id ) {
478 global $wpdb, $current_user, $current_site;
480 $comment_id = (int) $comment_id;
482 $comment = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->comments} WHERE comment_ID = %d", $comment_id ) );
483 if ( !$comment ) // it was deleted
486 // use the original version stored in comment_meta if available
487 $as_submitted = get_comment_meta( $comment_id, 'akismet_as_submitted', true);
489 if ( $as_submitted && is_array($as_submitted) && isset($as_submitted['comment_content']) )
490 $comment = (object) array_merge( (array)$comment, $as_submitted );
492 $comment->blog = get_bloginfo('url');
493 $comment->blog_lang = get_locale();
494 $comment->blog_charset = get_option('blog_charset');
495 $comment->permalink = get_permalink( $comment->comment_post_ID );
496 $comment->user_role = '';
498 if ( is_object($current_user) )
499 $comment->reporter = $current_user->user_login;
501 if ( is_object($current_site) )
502 $comment->site_domain = $current_site->domain;
504 if ( isset( $comment->user_ID ) )
505 $comment->user_role = Akismet::get_user_roles($comment->user_ID);
507 if ( Akismet::is_test_mode() )
508 $comment->is_test = 'true';
510 $post = get_post( $comment->comment_post_ID );
511 $comment->comment_post_modified_gmt = $post->post_modified_gmt;
513 $response = self::http_post( Akismet::build_query( $comment ), 'submit-ham' );
514 if ( $comment->reporter ) {
515 self::update_comment_history( $comment_id, sprintf( __('%s reported this comment as not spam', 'akismet'), $comment->reporter ), 'report-ham' );
516 update_comment_meta( $comment_id, 'akismet_user_result', 'false' );
517 update_comment_meta( $comment_id, 'akismet_user', $comment->reporter );
520 do_action('akismet_submit_nonspam_comment', $comment_id, $response[1]);
523 public static function cron_recheck() {
526 $api_key = self::get_api_key();
528 $status = self::verify_key( $api_key );
529 if ( get_option( 'akismet_alert_code' ) || $status == 'invalid' ) {
530 // since there is currently a problem with the key, reschedule a check for 6 hours hence
531 wp_schedule_single_event( time() + 21600, 'akismet_schedule_cron_recheck' );
535 delete_option('akismet_available_servers');
537 $comment_errors = $wpdb->get_col( "SELECT comment_id FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error' LIMIT 100" );
539 load_plugin_textdomain( 'akismet' );
541 foreach ( (array) $comment_errors as $comment_id ) {
542 // if the comment no longer exists, or is too old, remove the meta entry from the queue to avoid getting stuck
543 $comment = get_comment( $comment_id );
544 if ( !$comment || strtotime( $comment->comment_date_gmt ) < strtotime( "-15 days" ) ) {
545 delete_comment_meta( $comment_id, 'akismet_error' );
546 delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' );
550 add_comment_meta( $comment_id, 'akismet_rechecking', true );
551 $status = self::check_db_comment( $comment_id, 'retry' );
554 if ( $status == 'true' ) {
555 $msg = __( 'Akismet caught this comment as spam during an automatic retry.' , 'akismet');
556 } elseif ( $status == 'false' ) {
557 $msg = __( 'Akismet cleared this comment during an automatic retry.' , 'akismet');
560 // If we got back a legit response then update the comment history
561 // other wise just bail now and try again later. No point in
562 // re-trying all the comments once we hit one failure.
563 if ( !empty( $msg ) ) {
564 delete_comment_meta( $comment_id, 'akismet_error' );
565 self::update_comment_history( $comment_id, $msg, 'cron-retry' );
566 update_comment_meta( $comment_id, 'akismet_result', $status );
567 // make sure the comment status is still pending. if it isn't, that means the user has already moved it elsewhere.
568 $comment = get_comment( $comment_id );
569 if ( $comment && 'unapproved' == wp_get_comment_status( $comment_id ) ) {
570 if ( $status == 'true' ) {
571 wp_spam_comment( $comment_id );
572 } elseif ( $status == 'false' ) {
573 // comment is good, but it's still in the pending queue. depending on the moderation settings
574 // we may need to change it to approved.
575 if ( check_comment($comment->comment_author, $comment->comment_author_email, $comment->comment_author_url, $comment->comment_content, $comment->comment_author_IP, $comment->comment_agent, $comment->comment_type) )
576 wp_set_comment_status( $comment_id, 1 );
577 else if ( get_comment_meta( $comment_id, 'akismet_delayed_moderation_email', true ) )
578 wp_notify_moderator( $comment_id );
582 delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' );
584 // If this comment has been pending moderation for longer than MAX_DELAY_BEFORE_MODERATION_EMAIL,
585 // send a moderation email now.
586 if ( ( intval( gmdate( 'U' ) ) - strtotime( $comment->comment_date_gmt ) ) < self::MAX_DELAY_BEFORE_MODERATION_EMAIL ) {
587 delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' );
588 wp_notify_moderator( $comment_id );
591 delete_comment_meta( $comment_id, 'akismet_rechecking' );
592 wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' );
595 delete_comment_meta( $comment_id, 'akismet_rechecking' );
598 $remaining = $wpdb->get_var( "SELECT COUNT(*) FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error'" );
599 if ( $remaining && !wp_next_scheduled('akismet_schedule_cron_recheck') ) {
600 wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' );
604 public static function fix_scheduled_recheck() {
605 $future_check = wp_next_scheduled( 'akismet_schedule_cron_recheck' );
606 if ( !$future_check ) {
610 if ( get_option( 'akismet_alert_code' ) > 0 ) {
614 $check_range = time() + 1200;
615 if ( $future_check > $check_range ) {
616 wp_clear_scheduled_hook( 'akismet_schedule_cron_recheck' );
617 wp_schedule_single_event( time() + 300, 'akismet_schedule_cron_recheck' );
621 public static function add_comment_nonce( $post_id ) {
622 echo '<p style="display: none;">';
623 wp_nonce_field( 'akismet_comment_nonce_' . $post_id, 'akismet_comment_nonce', FALSE );
627 public static function is_test_mode() {
628 return defined('AKISMET_TEST_MODE') && AKISMET_TEST_MODE;
631 public static function allow_discard() {
632 if ( defined( 'DOING_AJAX' ) && DOING_AJAX )
634 if ( is_user_logged_in() )
637 return ( get_option( 'akismet_strictness' ) === '1' );
640 public static function get_ip_address() {
641 return isset( $_SERVER['REMOTE_ADDR'] ) ? $_SERVER['REMOTE_ADDR'] : null;
645 * Do these two comments, without checking the comment_ID, "match"?
647 * @param mixed $comment1 A comment object or array.
648 * @param mixed $comment2 A comment object or array.
649 * @return bool Whether the two comments should be treated as the same comment.
651 private static function comments_match( $comment1, $comment2 ) {
652 $comment1 = (array) $comment1;
653 $comment2 = (array) $comment2;
656 isset( $comment1['comment_post_ID'], $comment2['comment_post_ID'] )
657 && intval( $comment1['comment_post_ID'] ) == intval( $comment2['comment_post_ID'] )
658 && $comment1['comment_author'] == $comment2['comment_author']
659 && $comment1['comment_author_email'] == $comment2['comment_author_email']
663 // Does the supplied comment match the details of the one most recently stored in self::$last_comment?
664 public static function matches_last_comment( $comment ) {
665 if ( is_object( $comment ) )
666 $comment = (array) $comment;
668 return self::comments_match( self::$last_comment, $comment );
671 private static function get_user_agent() {
672 return isset( $_SERVER['HTTP_USER_AGENT'] ) ? $_SERVER['HTTP_USER_AGENT'] : null;
675 private static function get_referer() {
676 return isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : null;
679 // return a comma-separated list of role names for the given user
680 public static function get_user_roles( $user_id ) {
683 if ( !class_exists('WP_User') )
686 if ( $user_id > 0 ) {
687 $comment_user = new WP_User( $user_id );
688 if ( isset( $comment_user->roles ) )
689 $roles = join( ',', $comment_user->roles );
692 if ( is_multisite() && is_super_admin( $user_id ) ) {
693 if ( empty( $roles ) ) {
694 $roles = 'super_admin';
696 $comment_user->roles[] = 'super_admin';
697 $roles = join( ',', $comment_user->roles );
704 // filter handler used to return a spam result to pre_comment_approved
705 public static function last_comment_status( $approved, $comment ) {
706 // Only do this if it's the correct comment
707 if ( is_null(self::$last_comment_result) || ! self::matches_last_comment( $comment ) ) {
708 self::log( "comment_is_spam mismatched comment, returning unaltered $approved" );
712 // bump the counter here instead of when the filter is added to reduce the possibility of overcounting
713 if ( $incr = apply_filters('akismet_spam_count_incr', 1) )
714 update_option( 'akismet_spam_count', get_option('akismet_spam_count') + $incr );
716 return self::$last_comment_result;
720 * If Akismet is temporarily unreachable, we don't want to "spam" the blogger with
721 * moderation emails for comments that will be automatically cleared or spammed on
724 * For comments that will be rechecked later, empty the list of email addresses that
725 * the moderation email would be sent to.
727 * @param array $emails An array of email addresses that the moderation email will be sent to.
728 * @param int $comment_id The ID of the relevant comment.
729 * @return array An array of email addresses that the moderation email will be sent to.
731 public static function disable_moderation_emails_if_unreachable( $emails, $comment_id ) {
732 if ( ! empty( self::$prevent_moderation_email_for_these_comments ) && ! empty( $emails ) ) {
733 $comment = get_comment( $comment_id );
735 foreach ( self::$prevent_moderation_email_for_these_comments as $possible_match ) {
736 if ( self::comments_match( $possible_match, $comment ) ) {
737 update_comment_meta( $comment_id, 'akismet_delayed_moderation_email', true );
746 public static function _cmp_time( $a, $b ) {
747 return $a['time'] > $b['time'] ? -1 : 1;
750 public static function _get_microtime() {
751 $mtime = explode( ' ', microtime() );
752 return $mtime[1] + $mtime[0];
756 * Make a POST request to the Akismet API.
758 * @param string $request The body of the request.
759 * @param string $path The path for the request.
760 * @param string $ip The specific IP address to hit.
761 * @return array A two-member array consisting of the headers and the response body, both empty in the case of a failure.
763 public static function http_post( $request, $path, $ip=null ) {
765 $akismet_ua = sprintf( 'WordPress/%s | Akismet/%s', $GLOBALS['wp_version'], constant( 'AKISMET_VERSION' ) );
766 $akismet_ua = apply_filters( 'akismet_ua', $akismet_ua );
768 $content_length = strlen( $request );
770 $api_key = self::get_api_key();
771 $host = self::API_HOST;
773 if ( !empty( $api_key ) )
774 $host = $api_key.'.'.$host;
777 // use a specific IP if provided
778 // needed by Akismet_Admin::check_server_connectivity()
779 if ( $ip && long2ip( ip2long( $ip ) ) ) {
786 'Content-Type' => 'application/x-www-form-urlencoded; charset=' . get_option( 'blog_charset' ),
788 'User-Agent' => $akismet_ua,
790 'httpversion' => '1.0',
794 $akismet_url = "http://{$http_host}/1.1/{$path}";
795 $response = wp_remote_post( $akismet_url, $http_args );
796 Akismet::log( compact( 'akismet_url', 'http_args', 'response' ) );
797 if ( is_wp_error( $response ) )
798 return array( '', '' );
800 return array( $response['headers'], $response['body'] );
803 // given a response from an API call like check_key_status(), update the alert code options if an alert is present.
804 private static function update_alert( $response ) {
806 if ( isset( $response[0]['x-akismet-alert-code'] ) ) {
807 $code = $response[0]['x-akismet-alert-code'];
808 $msg = $response[0]['x-akismet-alert-msg'];
811 // only call update_option() if the value has changed
812 if ( $code != get_option( 'akismet_alert_code' ) ) {
814 delete_option( 'akismet_alert_code' );
815 delete_option( 'akismet_alert_msg' );
818 update_option( 'akismet_alert_code', $code );
819 update_option( 'akismet_alert_msg', $msg );
824 public static function load_form_js() {
825 // WP < 3.3 can't enqueue a script this late in the game and still have it appear in the footer.
826 // Once we drop support for everything pre-3.3, this can change back to a single enqueue call.
827 wp_register_script( 'akismet-form', AKISMET__PLUGIN_URL . '_inc/form.js', array(), AKISMET_VERSION, true );
828 add_action( 'wp_footer', array( 'Akismet', 'print_form_js' ) );
829 add_action( 'admin_footer', array( 'Akismet', 'print_form_js' ) );
832 public static function print_form_js() {
833 wp_print_scripts( 'akismet-form' );
836 public static function inject_ak_js( $fields ) {
837 echo '<p style="display: none;">';
838 echo '<input type="hidden" id="ak_js" name="ak_js" value="' . mt_rand( 0, 250 ) . '"/>';
842 private static function bail_on_activation( $message, $deactivate = true ) {
847 <meta charset="<?php bloginfo( 'charset' ); ?>">
853 font-family: "Lucida Grande",Verdana,Arial,"Bitstream Vera Sans",sans-serif;
861 <p><?php echo esc_html( $message ); ?></p>
866 $plugins = get_option( 'active_plugins' );
867 $akismet = plugin_basename( AKISMET__PLUGIN_DIR . 'akismet.php' );
869 foreach ( $plugins as $i => $plugin ) {
870 if ( $plugin === $akismet ) {
871 $plugins[$i] = false;
877 update_option( 'active_plugins', array_filter( $plugins ) );
883 public static function view( $name, array $args = array() ) {
884 $args = apply_filters( 'akismet_view_arguments', $args, $name );
886 foreach ( $args AS $key => $val ) {
890 load_plugin_textdomain( 'akismet' );
892 $file = AKISMET__PLUGIN_DIR . 'views/'. $name . '.php';
898 * Attached to activate_{ plugin_basename( __FILES__ ) } by register_activation_hook()
901 public static function plugin_activation() {
902 if ( version_compare( $GLOBALS['wp_version'], AKISMET__MINIMUM_WP_VERSION, '<' ) ) {
903 load_plugin_textdomain( 'akismet' );
905 $message = '<strong>'.sprintf(esc_html__( 'Akismet %s requires WordPress %s or higher.' , 'akismet'), AKISMET_VERSION, AKISMET__MINIMUM_WP_VERSION ).'</strong> '.sprintf(__('Please <a href="%1$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', 'http://wordpress.org/extend/plugins/akismet/download/');
907 Akismet::bail_on_activation( $message );
912 * Removes all connection options
915 public static function plugin_deactivation( ) {
920 * Essentially a copy of WP's build_query but one that doesn't expect pre-urlencoded values.
922 * @param array $args An array of key => value pairs
923 * @return string A string ready for use as a URL query string.
925 public static function build_query( $args ) {
926 return _http_build_query( $args, '', '&' );
929 public static function log( $akismet_debug ) {
930 if ( defined( 'WP_DEBUG_LOG' ) && WP_DEBUG_LOG )
931 error_log( print_r( compact( 'akismet_debug' ), 1 ) ); //send message to debug.log when in debug mode