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_footer-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 if ( '3.0.5' == $GLOBALS['wp_version'] ) {
44 remove_filter( 'comment_text', 'wp_kses_data' );
46 add_filter( 'comment_text', 'wp_kses_post' );
50 public static function get_api_key() {
51 return defined('WPCOM_API_KEY') ? constant('WPCOM_API_KEY') : get_option('wordpress_api_key');
54 public static function check_key_status( $key, $ip = null ) {
55 return self::http_post( http_build_query( array( 'key' => $key, 'blog' => get_option('home') ) ), 'verify-key', $ip );
58 public static function verify_key( $key, $ip = null ) {
59 $response = self::check_key_status( $key, $ip );
61 if ( $response[1] != 'valid' && $response[1] != 'invalid' )
64 self::update_alert( $response );
69 public static function auto_check_comment( $commentdata ) {
70 self::$last_comment_result = null;
72 $comment = $commentdata;
74 $comment['user_ip'] = self::get_ip_address();
75 $comment['user_agent'] = self::get_user_agent();
76 $comment['referrer'] = self::get_referer();
77 $comment['blog'] = get_option('home');
78 $comment['blog_lang'] = get_locale();
79 $comment['blog_charset'] = get_option('blog_charset');
80 $comment['permalink'] = get_permalink( $comment['comment_post_ID'] );
82 if ( !empty( $comment['user_ID'] ) )
83 $comment['user_role'] = Akismet::get_user_roles( $comment['user_ID'] );
85 $akismet_nonce_option = apply_filters( 'akismet_comment_nonce', get_option( 'akismet_comment_nonce' ) );
86 $comment['akismet_comment_nonce'] = 'inactive';
87 if ( $akismet_nonce_option == 'true' || $akismet_nonce_option == '' ) {
88 $comment['akismet_comment_nonce'] = 'failed';
89 if ( isset( $_POST['akismet_comment_nonce'] ) && wp_verify_nonce( $_POST['akismet_comment_nonce'], 'akismet_comment_nonce_' . $comment['comment_post_ID'] ) )
90 $comment['akismet_comment_nonce'] = 'passed';
92 // comment reply in wp-admin
93 if ( isset( $_POST['_ajax_nonce-replyto-comment'] ) && check_ajax_referer( 'replyto-comment', '_ajax_nonce-replyto-comment' ) )
94 $comment['akismet_comment_nonce'] = 'passed';
98 if ( self::is_test_mode() )
99 $comment['is_test'] = 'true';
101 foreach( $_POST as $key => $value ) {
102 if ( is_string( $value ) )
103 $comment["POST_{$key}"] = $value;
106 $ignore = array( 'HTTP_COOKIE', 'HTTP_COOKIE2', 'PHP_AUTH_PW' );
108 foreach ( $_SERVER as $key => $value ) {
109 if ( !in_array( $key, $ignore ) && is_string($value) )
110 $comment["$key"] = $value;
112 $comment["$key"] = '';
115 $post = get_post( $comment['comment_post_ID'] );
116 $comment[ 'comment_post_modified_gmt' ] = $post->post_modified_gmt;
118 $response = self::http_post( http_build_query( $comment ), 'comment-check' );
120 do_action( 'akismet_comment_check_response', $response );
122 self::update_alert( $response );
124 $commentdata['comment_as_submitted'] = $comment;
125 $commentdata['akismet_result'] = $response[1];
127 if ( isset( $response[0]['x-akismet-pro-tip'] ) )
128 $commentdata['akismet_pro_tip'] = $response[0]['x-akismet-pro-tip'];
130 if ( 'true' == $response[1] ) {
131 // akismet_spam_count will be incremented later by comment_is_spam()
132 self::$last_comment_result = 'spam';
134 $discard = ( isset( $commentdata['akismet_pro_tip'] ) && $commentdata['akismet_pro_tip'] === 'discard' && self::allow_discard() );
136 do_action( 'akismet_spam_caught', $discard );
139 // akismet_result_spam() won't be called so bump the counter here
140 if ( $incr = apply_filters('akismet_spam_count_incr', 1) )
141 update_option( 'akismet_spam_count', get_option('akismet_spam_count') + $incr );
142 $redirect_to = isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : get_permalink( $post );
143 wp_safe_redirect( esc_url_raw( $redirect_to ) );
148 // if the response is neither true nor false, hold the comment for moderation and schedule a recheck
149 if ( 'true' != $response[1] && 'false' != $response[1] ) {
150 if ( !current_user_can('moderate_comments') ) {
151 // Comment status should be moderated
152 self::$last_comment_result = '0';
154 if ( function_exists('wp_next_scheduled') && function_exists('wp_schedule_single_event') ) {
155 if ( !wp_next_scheduled( 'akismet_schedule_cron_recheck' ) ) {
156 wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' );
160 self::$prevent_moderation_email_for_these_comments[] = $commentdata;
163 if ( function_exists('wp_next_scheduled') && function_exists('wp_schedule_event') ) {
164 // WP 2.1+: delete old comments daily
165 if ( !wp_next_scheduled( 'akismet_scheduled_delete' ) )
166 wp_schedule_event( time(), 'daily', 'akismet_scheduled_delete' );
168 elseif ( (mt_rand(1, 10) == 3) ) {
169 // WP 2.0: run this one time in ten
170 self::delete_old_comments();
173 self::set_last_comment( $commentdata );
174 self::fix_scheduled_recheck();
176 return self::$last_comment;
179 public static function get_last_comment() {
180 return self::$last_comment;
183 public static function set_last_comment( $comment ) {
184 if ( is_null( $comment ) ) {
185 self::$last_comment = null;
188 // We filter it here so that it matches the filtered comment data that we'll have to compare against later.
189 // wp_filter_comment expects comment_author_IP
190 self::$last_comment = wp_filter_comment(
192 array( 'comment_author_IP' => self::get_ip_address() ),
199 // this fires on wp_insert_comment. we can't update comment_meta when auto_check_comment() runs
200 // because we don't know the comment ID at that point.
201 public static function auto_check_update_meta( $id, $comment ) {
203 // failsafe for old WP versions
204 if ( !function_exists('add_comment_meta') )
207 if ( !isset( self::$last_comment['comment_author_email'] ) )
208 self::$last_comment['comment_author_email'] = '';
210 // wp_insert_comment() might be called in other contexts, so make sure this is the same comment
211 // as was checked by auto_check_comment
212 if ( is_object( $comment ) && !empty( self::$last_comment ) && is_array( self::$last_comment ) ) {
213 if ( self::matches_last_comment( $comment ) ) {
215 load_plugin_textdomain( 'akismet' );
217 // normal result: true or false
218 if ( self::$last_comment['akismet_result'] == 'true' ) {
219 update_comment_meta( $comment->comment_ID, 'akismet_result', 'true' );
220 self::update_comment_history( $comment->comment_ID, __('Akismet caught this comment as spam', 'akismet'), 'check-spam' );
221 if ( $comment->comment_approved != 'spam' )
222 self::update_comment_history( $comment->comment_ID, sprintf( __('Comment status was changed to %s', 'akismet'), $comment->comment_approved), 'status-changed'.$comment->comment_approved );
224 elseif ( self::$last_comment['akismet_result'] == 'false' ) {
225 update_comment_meta( $comment->comment_ID, 'akismet_result', 'false' );
226 self::update_comment_history( $comment->comment_ID, __('Akismet cleared this comment', 'akismet'), 'check-ham' );
227 if ( $comment->comment_approved == 'spam' ) {
228 if ( wp_blacklist_check($comment->comment_author, $comment->comment_author_email, $comment->comment_author_url, $comment->comment_content, $comment->comment_author_IP, $comment->comment_agent) )
229 self::update_comment_history( $comment->comment_ID, __('Comment was caught by wp_blacklist_check', 'akismet'), 'wp-blacklisted' );
231 self::update_comment_history( $comment->comment_ID, sprintf( __('Comment status was changed to %s', 'akismet'), $comment->comment_approved), 'status-changed-'.$comment->comment_approved );
233 } // abnormal result: error
235 update_comment_meta( $comment->comment_ID, 'akismet_error', time() );
236 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' );
239 // record the complete original data as submitted for checking
240 if ( isset( self::$last_comment['comment_as_submitted'] ) )
241 update_comment_meta( $comment->comment_ID, 'akismet_as_submitted', self::$last_comment['comment_as_submitted'] );
243 if ( isset( self::$last_comment['akismet_pro_tip'] ) )
244 update_comment_meta( $comment->comment_ID, 'akismet_pro_tip', self::$last_comment['akismet_pro_tip'] );
249 public static function delete_old_comments() {
252 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 ) ) ) {
253 if ( empty( $comment_ids ) )
256 $wpdb->queries = array();
258 do_action( 'delete_comment', $comment_ids );
260 $comma_comment_ids = implode( ', ', array_map('intval', $comment_ids) );
262 $wpdb->query("DELETE FROM {$wpdb->comments} WHERE comment_id IN ( $comma_comment_ids )");
263 $wpdb->query("DELETE FROM {$wpdb->commentmeta} WHERE comment_id IN ( $comma_comment_ids )");
265 clean_comment_cache( $comment_ids );
268 if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->comments ) ) // lucky number
269 $wpdb->query("OPTIMIZE TABLE {$wpdb->comments}");
272 public static function delete_old_comments_meta() {
275 $interval = apply_filters( 'akismet_delete_commentmeta_interval', 15 );
277 # enfore a minimum of 1 day
278 $interval = absint( $interval );
282 // akismet_as_submitted meta values are large, so expire them
283 // after $interval days regardless of the comment status
284 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 ) ) ) {
285 if ( empty( $comment_ids ) )
288 $wpdb->queries = array();
290 foreach ( $comment_ids as $comment_id ) {
291 delete_comment_meta( $comment_id, 'akismet_as_submitted' );
295 if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->commentmeta ) ) // lucky number
296 $wpdb->query("OPTIMIZE TABLE {$wpdb->commentmeta}");
299 // how many approved comments does this author have?
300 public static function get_user_comments_approved( $user_id, $comment_author_email, $comment_author, $comment_author_url ) {
303 if ( !empty( $user_id ) )
304 return (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM {$wpdb->comments} WHERE user_id = %d AND comment_approved = 1", $user_id ) );
306 if ( !empty( $comment_author_email ) )
307 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 ) );
312 // get the full comment history for a given comment, as an array in reverse chronological order
313 public static function get_comment_history( $comment_id ) {
315 // failsafe for old WP versions
316 if ( !function_exists('add_comment_meta') )
319 $history = get_comment_meta( $comment_id, 'akismet_history', false );
320 usort( $history, array( 'Akismet', '_cmp_time' ) );
324 // log an event for a given comment, storing it in comment_meta
325 public static function update_comment_history( $comment_id, $message, $event=null ) {
326 global $current_user;
328 // failsafe for old WP versions
329 if ( !function_exists('add_comment_meta') )
333 if ( is_object( $current_user ) && isset( $current_user->user_login ) )
334 $user = $current_user->user_login;
337 'time' => self::_get_microtime(),
338 'message' => $message,
343 // $unique = false so as to allow multiple values per comment
344 $r = add_comment_meta( $comment_id, 'akismet_history', $event, false );
347 public static function check_db_comment( $id, $recheck_reason = 'recheck_queue' ) {
350 $c = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->comments} WHERE comment_ID = %d", $id ), ARRAY_A );
354 $c['user_ip'] = $c['comment_author_IP'];
355 $c['user_agent'] = $c['comment_agent'];
357 $c['blog'] = get_option('home');
358 $c['blog_lang'] = get_locale();
359 $c['blog_charset'] = get_option('blog_charset');
360 $c['permalink'] = get_permalink($c['comment_post_ID']);
361 $c['recheck_reason'] = $recheck_reason;
363 if ( self::is_test_mode() )
364 $c['is_test'] = 'true';
366 $response = self::http_post( http_build_query( $c ), 'comment-check' );
368 return ( is_array( $response ) && ! empty( $response[1] ) ) ? $response[1] : false;
371 public static function cron_recheck() {
374 $api_key = self::get_api_key();
376 $status = self::verify_key( $api_key );
377 if ( get_option( 'akismet_alert_code' ) || $status == 'invalid' ) {
378 // since there is currently a problem with the key, reschedule a check for 6 hours hence
379 wp_schedule_single_event( time() + 21600, 'akismet_schedule_cron_recheck' );
383 delete_option('akismet_available_servers');
385 $comment_errors = $wpdb->get_col( "SELECT comment_id FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error' LIMIT 100" );
387 load_plugin_textdomain( 'akismet' );
389 foreach ( (array) $comment_errors as $comment_id ) {
390 // if the comment no longer exists, or is too old, remove the meta entry from the queue to avoid getting stuck
391 $comment = get_comment( $comment_id );
392 if ( !$comment || strtotime( $comment->comment_date_gmt ) < strtotime( "-15 days" ) ) {
393 delete_comment_meta( $comment_id, 'akismet_error' );
394 delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' );
398 add_comment_meta( $comment_id, 'akismet_rechecking', true );
399 $status = self::check_db_comment( $comment_id, 'retry' );
402 if ( $status == 'true' ) {
403 $msg = __( 'Akismet caught this comment as spam during an automatic retry.' , 'akismet');
404 } elseif ( $status == 'false' ) {
405 $msg = __( 'Akismet cleared this comment during an automatic retry.' , 'akismet');
408 // If we got back a legit response then update the comment history
409 // other wise just bail now and try again later. No point in
410 // re-trying all the comments once we hit one failure.
411 if ( !empty( $msg ) ) {
412 delete_comment_meta( $comment_id, 'akismet_error' );
413 self::update_comment_history( $comment_id, $msg, 'cron-retry' );
414 update_comment_meta( $comment_id, 'akismet_result', $status );
415 // make sure the comment status is still pending. if it isn't, that means the user has already moved it elsewhere.
416 $comment = get_comment( $comment_id );
417 if ( $comment && 'unapproved' == wp_get_comment_status( $comment_id ) ) {
418 if ( $status == 'true' ) {
419 wp_spam_comment( $comment_id );
420 } elseif ( $status == 'false' ) {
421 // comment is good, but it's still in the pending queue. depending on the moderation settings
422 // we may need to change it to approved.
423 if ( check_comment($comment->comment_author, $comment->comment_author_email, $comment->comment_author_url, $comment->comment_content, $comment->comment_author_IP, $comment->comment_agent, $comment->comment_type) )
424 wp_set_comment_status( $comment_id, 1 );
425 else if ( get_comment_meta( $comment_id, 'akismet_delayed_moderation_email', true ) )
426 wp_notify_moderator( $comment_id );
430 delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' );
432 // If this comment has been pending moderation for longer than MAX_DELAY_BEFORE_MODERATION_EMAIL,
433 // send a moderation email now.
434 if ( ( intval( gmdate( 'U' ) ) - strtotime( $comment->comment_date_gmt ) ) < self::MAX_DELAY_BEFORE_MODERATION_EMAIL ) {
435 delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' );
436 wp_notify_moderator( $comment_id );
439 delete_comment_meta( $comment_id, 'akismet_rechecking' );
440 wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' );
443 delete_comment_meta( $comment_id, 'akismet_rechecking' );
446 $remaining = $wpdb->get_var( "SELECT COUNT(*) FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error'" );
447 if ( $remaining && !wp_next_scheduled('akismet_schedule_cron_recheck') ) {
448 wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' );
452 public static function fix_scheduled_recheck() {
453 $future_check = wp_next_scheduled( 'akismet_schedule_cron_recheck' );
454 if ( !$future_check ) {
458 if ( get_option( 'akismet_alert_code' ) > 0 ) {
462 $check_range = time() + 1200;
463 if ( $future_check > $check_range ) {
464 wp_clear_scheduled_hook( 'akismet_schedule_cron_recheck' );
465 wp_schedule_single_event( time() + 300, 'akismet_schedule_cron_recheck' );
469 public static function add_comment_nonce( $post_id ) {
470 echo '<p style="display: none;">';
471 wp_nonce_field( 'akismet_comment_nonce_' . $post_id, 'akismet_comment_nonce', FALSE );
475 public static function is_test_mode() {
476 return defined('AKISMET_TEST_MODE') && AKISMET_TEST_MODE;
479 public static function allow_discard() {
480 if ( defined( 'DOING_AJAX' ) && DOING_AJAX )
482 if ( is_user_logged_in() )
485 return ( get_option( 'akismet_strictness' ) === '1' );
488 public static function get_ip_address() {
489 return isset( $_SERVER['REMOTE_ADDR'] ) ? $_SERVER['REMOTE_ADDR'] : null;
493 * Do these two comments, without checking the comment_ID, "match"?
495 * @param mixed $comment1 A comment object or array.
496 * @param mixed $comment2 A comment object or array.
497 * @return bool Whether the two comments should be treated as the same comment.
499 private static function comments_match( $comment1, $comment2 ) {
500 $comment1 = (array) $comment1;
501 $comment2 = (array) $comment2;
504 isset( $comment1['comment_post_ID'], $comment2['comment_post_ID'] )
505 && intval( $comment1['comment_post_ID'] ) == intval( $comment2['comment_post_ID'] )
506 && $comment1['comment_author'] == $comment2['comment_author']
507 && $comment1['comment_author_email'] == $comment2['comment_author_email']
511 // Does the supplied comment match the details of the one most recently stored in self::$last_comment?
512 public static function matches_last_comment( $comment ) {
513 if ( is_object( $comment ) )
514 $comment = (array) $comment;
516 return self::comments_match( self::$last_comment, $comment );
519 private static function get_user_agent() {
520 return isset( $_SERVER['HTTP_USER_AGENT'] ) ? $_SERVER['HTTP_USER_AGENT'] : null;
523 private static function get_referer() {
524 return isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : null;
527 // return a comma-separated list of role names for the given user
528 public static function get_user_roles( $user_id ) {
531 if ( !class_exists('WP_User') )
534 if ( $user_id > 0 ) {
535 $comment_user = new WP_User( $user_id );
536 if ( isset( $comment_user->roles ) )
537 $roles = join( ',', $comment_user->roles );
540 if ( is_multisite() && is_super_admin( $user_id ) ) {
541 if ( empty( $roles ) ) {
542 $roles = 'super_admin';
544 $comment_user->roles[] = 'super_admin';
545 $roles = join( ',', $comment_user->roles );
552 // filter handler used to return a spam result to pre_comment_approved
553 public static function last_comment_status( $approved, $comment ) {
554 // Only do this if it's the correct comment
555 if ( is_null(self::$last_comment_result) || ! self::matches_last_comment( $comment ) ) {
556 self::log( "comment_is_spam mismatched comment, returning unaltered $approved" );
560 // bump the counter here instead of when the filter is added to reduce the possibility of overcounting
561 if ( $incr = apply_filters('akismet_spam_count_incr', 1) )
562 update_option( 'akismet_spam_count', get_option('akismet_spam_count') + $incr );
564 return self::$last_comment_result;
568 * If Akismet is temporarily unreachable, we don't want to "spam" the blogger with
569 * moderation emails for comments that will be automatically cleared or spammed on
572 * For comments that will be rechecked later, empty the list of email addresses that
573 * the moderation email would be sent to.
575 * @param array $emails An array of email addresses that the moderation email will be sent to.
576 * @param int $comment_id The ID of the relevant comment.
577 * @return array An array of email addresses that the moderation email will be sent to.
579 public static function disable_moderation_emails_if_unreachable( $emails, $comment_id ) {
580 if ( ! empty( self::$prevent_moderation_email_for_these_comments ) && ! empty( $emails ) ) {
581 $comment = get_comment( $comment_id );
583 foreach ( self::$prevent_moderation_email_for_these_comments as $possible_match ) {
584 if ( self::comments_match( $possible_match, $comment ) ) {
585 update_comment_meta( $comment_id, 'akismet_delayed_moderation_email', true );
594 public static function _cmp_time( $a, $b ) {
595 return $a['time'] > $b['time'] ? -1 : 1;
598 public static function _get_microtime() {
599 $mtime = explode( ' ', microtime() );
600 return $mtime[1] + $mtime[0];
604 * Make a POST request to the Akismet API.
606 * @param string $request The body of the request.
607 * @param string $path The path for the request.
608 * @param string $ip The specific IP address to hit.
609 * @return array A two-member array consisting of the headers and the response body, both empty in the case of a failure.
611 public static function http_post( $request, $path, $ip=null ) {
613 $akismet_ua = sprintf( 'WordPress/%s | Akismet/%s', $GLOBALS['wp_version'], constant( 'AKISMET_VERSION' ) );
614 $akismet_ua = apply_filters( 'akismet_ua', $akismet_ua );
616 $content_length = strlen( $request );
618 $api_key = self::get_api_key();
619 $host = self::API_HOST;
621 if ( !empty( $api_key ) )
622 $host = $api_key.'.'.$host;
625 // use a specific IP if provided
626 // needed by Akismet_Admin::check_server_connectivity()
627 if ( $ip && long2ip( ip2long( $ip ) ) ) {
634 'Content-Type' => 'application/x-www-form-urlencoded; charset=' . get_option( 'blog_charset' ),
636 'User-Agent' => $akismet_ua,
638 'httpversion' => '1.0',
642 $akismet_url = "http://{$http_host}/1.1/{$path}";
643 $response = wp_remote_post( $akismet_url, $http_args );
644 Akismet::log( compact( 'akismet_url', 'http_args', 'response' ) );
645 if ( is_wp_error( $response ) )
646 return array( '', '' );
648 return array( $response['headers'], $response['body'] );
651 // given a response from an API call like check_key_status(), update the alert code options if an alert is present.
652 private static function update_alert( $response ) {
654 if ( isset( $response[0]['x-akismet-alert-code'] ) ) {
655 $code = $response[0]['x-akismet-alert-code'];
656 $msg = $response[0]['x-akismet-alert-msg'];
659 // only call update_option() if the value has changed
660 if ( $code != get_option( 'akismet_alert_code' ) ) {
662 delete_option( 'akismet_alert_code' );
663 delete_option( 'akismet_alert_msg' );
666 update_option( 'akismet_alert_code', $code );
667 update_option( 'akismet_alert_msg', $msg );
672 public static function load_form_js() {
673 wp_enqueue_script( 'akismet-form', AKISMET__PLUGIN_URL . '_inc/form.js', array( 'jquery' ), AKISMET_VERSION );
674 wp_print_scripts( 'akismet-form' );
677 public static function inject_ak_js( $fields ) {
678 echo '<p style="display: none;">';
679 echo '<input type="hidden" id="ak_js" name="ak_js" value="' . mt_rand( 0, 250 ) . '"/>';
683 private static function bail_on_activation( $message, $deactivate = true ) {
688 <meta charset="<?php bloginfo( 'charset' ); ?>">
694 font-family: "Lucida Grande",Verdana,Arial,"Bitstream Vera Sans",sans-serif;
702 <p><?php echo esc_html( $message ); ?></p>
707 $plugins = get_option( 'active_plugins' );
708 $akismet = plugin_basename( AKISMET__PLUGIN_DIR . 'akismet.php' );
710 foreach ( $plugins as $i => $plugin ) {
711 if ( $plugin === $akismet ) {
712 $plugins[$i] = false;
718 update_option( 'active_plugins', array_filter( $plugins ) );
724 public static function view( $name, array $args = array() ) {
725 $args = apply_filters( 'akismet_view_arguments', $args, $name );
727 foreach ( $args AS $key => $val ) {
731 load_plugin_textdomain( 'akismet' );
733 $file = AKISMET__PLUGIN_DIR . 'views/'. $name . '.php';
739 * Attached to activate_{ plugin_basename( __FILES__ ) } by register_activation_hook()
742 public static function plugin_activation() {
743 if ( version_compare( $GLOBALS['wp_version'], AKISMET__MINIMUM_WP_VERSION, '<' ) ) {
744 load_plugin_textdomain( 'akismet' );
746 $message = '<strong>'.sprintf(esc_html__( 'Akismet %s requires WordPress %s or higher.' , 'akismet'), AKISMET_VERSION, AKISMET__MINIMUM_WP_VERSION ).'</strong> '.sprintf(__('Please <a href="%1$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/');
748 Akismet::bail_on_activation( $message );
753 * Removes all connection options
756 public static function plugin_deactivation( ) {
760 public static function log( $akismet_debug ) {
761 if ( defined( 'WP_DEBUG_LOG' ) && WP_DEBUG_LOG )
762 error_log( print_r( compact( 'akismet_debug' ), 1 ) ); //send message to debug.log when in debug mode