akismet
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akismet.php
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class.akismet-cli.php
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class.akismet-rest-api.php
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wrapper.php
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class.akismet.php
1352 lines
| 1 | <?php |
| 2 | |
| 3 | class Akismet { |
| 4 | const API_HOST = 'rest.akismet.com'; |
| 5 | const API_PORT = 80; |
| 6 | const MAX_DELAY_BEFORE_MODERATION_EMAIL = 86400; // One day in seconds |
| 7 | |
| 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; |
| 12 | 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' => '' ); |
| 13 | private static $is_rest_api_call = false; |
| 14 | |
| 15 | public static function init() { |
| 16 | if ( ! self::$initiated ) { |
| 17 | self::init_hooks(); |
| 18 | } |
| 19 | } |
| 20 | |
| 21 | /** |
| 22 | * Initializes WordPress hooks |
| 23 | */ |
| 24 | private static function init_hooks() { |
| 25 | self::$initiated = true; |
| 26 | |
| 27 | add_action( 'wp_insert_comment', array( 'Akismet', 'auto_check_update_meta' ), 10, 2 ); |
| 28 | add_filter( 'preprocess_comment', array( 'Akismet', 'auto_check_comment' ), 1 ); |
| 29 | add_filter( 'rest_pre_insert_comment', array( 'Akismet', 'rest_auto_check_comment' ), 1 ); |
| 30 | |
| 31 | add_action( 'akismet_scheduled_delete', array( 'Akismet', 'delete_old_comments' ) ); |
| 32 | add_action( 'akismet_scheduled_delete', array( 'Akismet', 'delete_old_comments_meta' ) ); |
| 33 | add_action( 'akismet_schedule_cron_recheck', array( 'Akismet', 'cron_recheck' ) ); |
| 34 | |
| 35 | add_action( 'comment_form', array( 'Akismet', 'add_comment_nonce' ), 1 ); |
| 36 | |
| 37 | add_action( 'admin_head-edit-comments.php', array( 'Akismet', 'load_form_js' ) ); |
| 38 | add_action( 'comment_form', array( 'Akismet', 'load_form_js' ) ); |
| 39 | add_action( 'comment_form', array( 'Akismet', 'inject_ak_js' ) ); |
| 40 | add_filter( 'script_loader_tag', array( 'Akismet', 'set_form_js_async' ), 10, 3 ); |
| 41 | |
| 42 | add_filter( 'comment_moderation_recipients', array( 'Akismet', 'disable_moderation_emails_if_unreachable' ), 1000, 2 ); |
| 43 | add_filter( 'pre_comment_approved', array( 'Akismet', 'last_comment_status' ), 10, 2 ); |
| 44 | |
| 45 | add_action( 'transition_comment_status', array( 'Akismet', 'transition_comment_status' ), 10, 3 ); |
| 46 | |
| 47 | // Run this early in the pingback call, before doing a remote fetch of the source uri |
| 48 | add_action( 'xmlrpc_call', array( 'Akismet', 'pre_check_pingback' ) ); |
| 49 | |
| 50 | // Jetpack compatibility |
| 51 | add_filter( 'jetpack_options_whitelist', array( 'Akismet', 'add_to_jetpack_options_whitelist' ) ); |
| 52 | add_action( 'update_option_wordpress_api_key', array( 'Akismet', 'updated_option' ), 10, 2 ); |
| 53 | } |
| 54 | |
| 55 | public static function get_api_key() { |
| 56 | return apply_filters( 'akismet_get_api_key', defined('WPCOM_API_KEY') ? constant('WPCOM_API_KEY') : get_option('wordpress_api_key') ); |
| 57 | } |
| 58 | |
| 59 | public static function check_key_status( $key, $ip = null ) { |
| 60 | return self::http_post( Akismet::build_query( array( 'key' => $key, 'blog' => get_option( 'home' ) ) ), 'verify-key', $ip ); |
| 61 | } |
| 62 | |
| 63 | public static function verify_key( $key, $ip = null ) { |
| 64 | $response = self::check_key_status( $key, $ip ); |
| 65 | |
| 66 | if ( $response[1] != 'valid' && $response[1] != 'invalid' ) |
| 67 | return 'failed'; |
| 68 | |
| 69 | return $response[1]; |
| 70 | } |
| 71 | |
| 72 | public static function deactivate_key( $key ) { |
| 73 | $response = self::http_post( Akismet::build_query( array( 'key' => $key, 'blog' => get_option( 'home' ) ) ), 'deactivate' ); |
| 74 | |
| 75 | if ( $response[1] != 'deactivated' ) |
| 76 | return 'failed'; |
| 77 | |
| 78 | return $response[1]; |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * Add the akismet option to the Jetpack options management whitelist. |
| 83 | * |
| 84 | * @param array $options The list of whitelisted option names. |
| 85 | * @return array The updated whitelist |
| 86 | */ |
| 87 | public static function add_to_jetpack_options_whitelist( $options ) { |
| 88 | $options[] = 'wordpress_api_key'; |
| 89 | return $options; |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * When the akismet option is updated, run the registration call. |
| 94 | * |
| 95 | * This should only be run when the option is updated from the Jetpack/WP.com |
| 96 | * API call, and only if the new key is different than the old key. |
| 97 | * |
| 98 | * @param mixed $old_value The old option value. |
| 99 | * @param mixed $value The new option value. |
| 100 | */ |
| 101 | public static function updated_option( $old_value, $value ) { |
| 102 | // Not an API call |
| 103 | if ( ! class_exists( 'WPCOM_JSON_API_Update_Option_Endpoint' ) ) { |
| 104 | return; |
| 105 | } |
| 106 | // Only run the registration if the old key is different. |
| 107 | if ( $old_value !== $value ) { |
| 108 | self::verify_key( $value ); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | public static function rest_auto_check_comment( $commentdata ) { |
| 113 | self::$is_rest_api_call = true; |
| 114 | |
| 115 | return self::auto_check_comment( $commentdata ); |
| 116 | } |
| 117 | |
| 118 | public static function auto_check_comment( $commentdata ) { |
| 119 | self::$last_comment_result = null; |
| 120 | |
| 121 | $comment = $commentdata; |
| 122 | |
| 123 | $comment['user_ip'] = self::get_ip_address(); |
| 124 | $comment['user_agent'] = self::get_user_agent(); |
| 125 | $comment['referrer'] = self::get_referer(); |
| 126 | $comment['blog'] = get_option( 'home' ); |
| 127 | $comment['blog_lang'] = get_locale(); |
| 128 | $comment['blog_charset'] = get_option('blog_charset'); |
| 129 | $comment['permalink'] = get_permalink( $comment['comment_post_ID'] ); |
| 130 | |
| 131 | if ( ! empty( $comment['user_ID'] ) ) { |
| 132 | $comment['user_role'] = Akismet::get_user_roles( $comment['user_ID'] ); |
| 133 | } |
| 134 | |
| 135 | /** See filter documentation in init_hooks(). */ |
| 136 | $akismet_nonce_option = apply_filters( 'akismet_comment_nonce', get_option( 'akismet_comment_nonce' ) ); |
| 137 | $comment['akismet_comment_nonce'] = 'inactive'; |
| 138 | if ( $akismet_nonce_option == 'true' || $akismet_nonce_option == '' ) { |
| 139 | $comment['akismet_comment_nonce'] = 'failed'; |
| 140 | if ( isset( $_POST['akismet_comment_nonce'] ) && wp_verify_nonce( $_POST['akismet_comment_nonce'], 'akismet_comment_nonce_' . $comment['comment_post_ID'] ) ) |
| 141 | $comment['akismet_comment_nonce'] = 'passed'; |
| 142 | |
| 143 | // comment reply in wp-admin |
| 144 | if ( isset( $_POST['_ajax_nonce-replyto-comment'] ) && check_ajax_referer( 'replyto-comment', '_ajax_nonce-replyto-comment' ) ) |
| 145 | $comment['akismet_comment_nonce'] = 'passed'; |
| 146 | |
| 147 | } |
| 148 | |
| 149 | if ( self::is_test_mode() ) |
| 150 | $comment['is_test'] = 'true'; |
| 151 | |
| 152 | foreach( $_POST as $key => $value ) { |
| 153 | if ( is_string( $value ) ) |
| 154 | $comment["POST_{$key}"] = $value; |
| 155 | } |
| 156 | |
| 157 | foreach ( $_SERVER as $key => $value ) { |
| 158 | if ( ! is_string( $value ) ) { |
| 159 | continue; |
| 160 | } |
| 161 | |
| 162 | if ( preg_match( "/^HTTP_COOKIE/", $key ) ) { |
| 163 | continue; |
| 164 | } |
| 165 | |
| 166 | // Send any potentially useful $_SERVER vars, but avoid sending junk we don't need. |
| 167 | if ( preg_match( "/^(HTTP_|REMOTE_ADDR|REQUEST_URI|DOCUMENT_URI)/", $key ) ) { |
| 168 | $comment[ "$key" ] = $value; |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | $post = get_post( $comment['comment_post_ID'] ); |
| 173 | |
| 174 | if ( ! is_null( $post ) ) { |
| 175 | // $post can technically be null, although in the past, it's always been an indicator of another plugin interfering. |
| 176 | $comment[ 'comment_post_modified_gmt' ] = $post->post_modified_gmt; |
| 177 | } |
| 178 | |
| 179 | $response = self::http_post( Akismet::build_query( $comment ), 'comment-check' ); |
| 180 | |
| 181 | do_action( 'akismet_comment_check_response', $response ); |
| 182 | |
| 183 | $commentdata['comment_as_submitted'] = array_intersect_key( $comment, self::$comment_as_submitted_allowed_keys ); |
| 184 | $commentdata['akismet_result'] = $response[1]; |
| 185 | |
| 186 | if ( isset( $response[0]['x-akismet-pro-tip'] ) ) |
| 187 | $commentdata['akismet_pro_tip'] = $response[0]['x-akismet-pro-tip']; |
| 188 | |
| 189 | if ( isset( $response[0]['x-akismet-error'] ) ) { |
| 190 | // An error occurred that we anticipated (like a suspended key) and want the user to act on. |
| 191 | // Send to moderation. |
| 192 | self::$last_comment_result = '0'; |
| 193 | } |
| 194 | else if ( 'true' == $response[1] ) { |
| 195 | // akismet_spam_count will be incremented later by comment_is_spam() |
| 196 | self::$last_comment_result = 'spam'; |
| 197 | |
| 198 | $discard = ( isset( $commentdata['akismet_pro_tip'] ) && $commentdata['akismet_pro_tip'] === 'discard' && self::allow_discard() ); |
| 199 | |
| 200 | do_action( 'akismet_spam_caught', $discard ); |
| 201 | |
| 202 | if ( $discard ) { |
| 203 | // The spam is obvious, so we're bailing out early. |
| 204 | // akismet_result_spam() won't be called so bump the counter here |
| 205 | if ( $incr = apply_filters( 'akismet_spam_count_incr', 1 ) ) { |
| 206 | update_option( 'akismet_spam_count', get_option( 'akismet_spam_count' ) + $incr ); |
| 207 | } |
| 208 | |
| 209 | if ( self::$is_rest_api_call ) { |
| 210 | return new WP_Error( 'akismet_rest_comment_discarded', __( 'Comment discarded.', 'akismet' ) ); |
| 211 | } |
| 212 | else { |
| 213 | // Redirect back to the previous page, or failing that, the post permalink, or failing that, the homepage of the blog. |
| 214 | $redirect_to = isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : ( $post ? get_permalink( $post ) : home_url() ); |
| 215 | wp_safe_redirect( esc_url_raw( $redirect_to ) ); |
| 216 | die(); |
| 217 | } |
| 218 | } |
| 219 | else if ( self::$is_rest_api_call ) { |
| 220 | // The way the REST API structures its calls, we can set the comment_approved value right away. |
| 221 | $commentdata['comment_approved'] = 'spam'; |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | // if the response is neither true nor false, hold the comment for moderation and schedule a recheck |
| 226 | if ( 'true' != $response[1] && 'false' != $response[1] ) { |
| 227 | if ( !current_user_can('moderate_comments') ) { |
| 228 | // Comment status should be moderated |
| 229 | self::$last_comment_result = '0'; |
| 230 | } |
| 231 | |
| 232 | if ( ! wp_next_scheduled( 'akismet_schedule_cron_recheck' ) ) { |
| 233 | wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' ); |
| 234 | do_action( 'akismet_scheduled_recheck', 'invalid-response-' . $response[1] ); |
| 235 | } |
| 236 | |
| 237 | self::$prevent_moderation_email_for_these_comments[] = $commentdata; |
| 238 | } |
| 239 | |
| 240 | // Delete old comments daily |
| 241 | if ( ! wp_next_scheduled( 'akismet_scheduled_delete' ) ) { |
| 242 | wp_schedule_event( time(), 'daily', 'akismet_scheduled_delete' ); |
| 243 | } |
| 244 | |
| 245 | self::set_last_comment( $commentdata ); |
| 246 | self::fix_scheduled_recheck(); |
| 247 | |
| 248 | return $commentdata; |
| 249 | } |
| 250 | |
| 251 | public static function get_last_comment() { |
| 252 | return self::$last_comment; |
| 253 | } |
| 254 | |
| 255 | public static function set_last_comment( $comment ) { |
| 256 | if ( is_null( $comment ) ) { |
| 257 | self::$last_comment = null; |
| 258 | } |
| 259 | else { |
| 260 | // We filter it here so that it matches the filtered comment data that we'll have to compare against later. |
| 261 | // wp_filter_comment expects comment_author_IP |
| 262 | self::$last_comment = wp_filter_comment( |
| 263 | array_merge( |
| 264 | array( 'comment_author_IP' => self::get_ip_address() ), |
| 265 | $comment |
| 266 | ) |
| 267 | ); |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | // this fires on wp_insert_comment. we can't update comment_meta when auto_check_comment() runs |
| 272 | // because we don't know the comment ID at that point. |
| 273 | public static function auto_check_update_meta( $id, $comment ) { |
| 274 | // wp_insert_comment() might be called in other contexts, so make sure this is the same comment |
| 275 | // as was checked by auto_check_comment |
| 276 | if ( is_object( $comment ) && !empty( self::$last_comment ) && is_array( self::$last_comment ) ) { |
| 277 | if ( self::matches_last_comment( $comment ) ) { |
| 278 | |
| 279 | load_plugin_textdomain( 'akismet' ); |
| 280 | |
| 281 | // normal result: true or false |
| 282 | if ( self::$last_comment['akismet_result'] == 'true' ) { |
| 283 | update_comment_meta( $comment->comment_ID, 'akismet_result', 'true' ); |
| 284 | self::update_comment_history( $comment->comment_ID, '', 'check-spam' ); |
| 285 | if ( $comment->comment_approved != 'spam' ) |
| 286 | self::update_comment_history( |
| 287 | $comment->comment_ID, |
| 288 | '', |
| 289 | 'status-changed-'.$comment->comment_approved |
| 290 | ); |
| 291 | } |
| 292 | elseif ( self::$last_comment['akismet_result'] == 'false' ) { |
| 293 | update_comment_meta( $comment->comment_ID, 'akismet_result', 'false' ); |
| 294 | self::update_comment_history( $comment->comment_ID, '', 'check-ham' ); |
| 295 | // Status could be spam or trash, depending on the WP version and whether this change applies: |
| 296 | // https://core.trac.wordpress.org/changeset/34726 |
| 297 | if ( $comment->comment_approved == 'spam' || $comment->comment_approved == 'trash' ) { |
| 298 | if ( wp_blacklist_check($comment->comment_author, $comment->comment_author_email, $comment->comment_author_url, $comment->comment_content, $comment->comment_author_IP, $comment->comment_agent) ) |
| 299 | self::update_comment_history( $comment->comment_ID, '', 'wp-blacklisted' ); |
| 300 | else |
| 301 | self::update_comment_history( $comment->comment_ID, '', 'status-changed-'.$comment->comment_approved ); |
| 302 | } |
| 303 | } // abnormal result: error |
| 304 | else { |
| 305 | update_comment_meta( $comment->comment_ID, 'akismet_error', time() ); |
| 306 | self::update_comment_history( |
| 307 | $comment->comment_ID, |
| 308 | '', |
| 309 | 'check-error', |
| 310 | array( 'response' => substr( self::$last_comment['akismet_result'], 0, 50 ) ) |
| 311 | ); |
| 312 | } |
| 313 | |
| 314 | // record the complete original data as submitted for checking |
| 315 | if ( isset( self::$last_comment['comment_as_submitted'] ) ) |
| 316 | update_comment_meta( $comment->comment_ID, 'akismet_as_submitted', self::$last_comment['comment_as_submitted'] ); |
| 317 | |
| 318 | if ( isset( self::$last_comment['akismet_pro_tip'] ) ) |
| 319 | update_comment_meta( $comment->comment_ID, 'akismet_pro_tip', self::$last_comment['akismet_pro_tip'] ); |
| 320 | } |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | public static function delete_old_comments() { |
| 325 | global $wpdb; |
| 326 | |
| 327 | /** |
| 328 | * Determines how many comments will be deleted in each batch. |
| 329 | * |
| 330 | * @param int The default, as defined by AKISMET_DELETE_LIMIT. |
| 331 | */ |
| 332 | $delete_limit = apply_filters( 'akismet_delete_comment_limit', defined( 'AKISMET_DELETE_LIMIT' ) ? AKISMET_DELETE_LIMIT : 10000 ); |
| 333 | $delete_limit = max( 1, intval( $delete_limit ) ); |
| 334 | |
| 335 | /** |
| 336 | * Determines how many days a comment will be left in the Spam queue before being deleted. |
| 337 | * |
| 338 | * @param int The default number of days. |
| 339 | */ |
| 340 | $delete_interval = apply_filters( 'akismet_delete_comment_interval', 15 ); |
| 341 | $delete_interval = max( 1, intval( $delete_interval ) ); |
| 342 | |
| 343 | 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 ) ) ) { |
| 344 | if ( empty( $comment_ids ) ) |
| 345 | return; |
| 346 | |
| 347 | $wpdb->queries = array(); |
| 348 | |
| 349 | foreach ( $comment_ids as $comment_id ) { |
| 350 | do_action( 'delete_comment', $comment_id ); |
| 351 | } |
| 352 | |
| 353 | // Prepared as strings since comment_id is an unsigned BIGINT, and using %d will constrain the value to the maximum signed BIGINT. |
| 354 | $format_string = implode( ", ", array_fill( 0, count( $comment_ids ), '%s' ) ); |
| 355 | |
| 356 | $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->comments} WHERE comment_id IN ( " . $format_string . " )", $comment_ids ) ); |
| 357 | $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->commentmeta} WHERE comment_id IN ( " . $format_string . " )", $comment_ids ) ); |
| 358 | |
| 359 | clean_comment_cache( $comment_ids ); |
| 360 | do_action( 'akismet_delete_comment_batch', count( $comment_ids ) ); |
| 361 | } |
| 362 | |
| 363 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->comments ) ) // lucky number |
| 364 | $wpdb->query("OPTIMIZE TABLE {$wpdb->comments}"); |
| 365 | } |
| 366 | |
| 367 | public static function delete_old_comments_meta() { |
| 368 | global $wpdb; |
| 369 | |
| 370 | $interval = apply_filters( 'akismet_delete_commentmeta_interval', 15 ); |
| 371 | |
| 372 | # enfore a minimum of 1 day |
| 373 | $interval = absint( $interval ); |
| 374 | if ( $interval < 1 ) |
| 375 | $interval = 1; |
| 376 | |
| 377 | // akismet_as_submitted meta values are large, so expire them |
| 378 | // after $interval days regardless of the comment status |
| 379 | 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 ) ) ) { |
| 380 | if ( empty( $comment_ids ) ) |
| 381 | return; |
| 382 | |
| 383 | $wpdb->queries = array(); |
| 384 | |
| 385 | foreach ( $comment_ids as $comment_id ) { |
| 386 | delete_comment_meta( $comment_id, 'akismet_as_submitted' ); |
| 387 | } |
| 388 | |
| 389 | do_action( 'akismet_delete_commentmeta_batch', count( $comment_ids ) ); |
| 390 | } |
| 391 | |
| 392 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->commentmeta ) ) // lucky number |
| 393 | $wpdb->query("OPTIMIZE TABLE {$wpdb->commentmeta}"); |
| 394 | } |
| 395 | |
| 396 | // how many approved comments does this author have? |
| 397 | public static function get_user_comments_approved( $user_id, $comment_author_email, $comment_author, $comment_author_url ) { |
| 398 | global $wpdb; |
| 399 | |
| 400 | if ( !empty( $user_id ) ) |
| 401 | return (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM {$wpdb->comments} WHERE user_id = %d AND comment_approved = 1", $user_id ) ); |
| 402 | |
| 403 | if ( !empty( $comment_author_email ) ) |
| 404 | 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 ) ); |
| 405 | |
| 406 | return 0; |
| 407 | } |
| 408 | |
| 409 | // get the full comment history for a given comment, as an array in reverse chronological order |
| 410 | public static function get_comment_history( $comment_id ) { |
| 411 | $history = get_comment_meta( $comment_id, 'akismet_history', false ); |
| 412 | usort( $history, array( 'Akismet', '_cmp_time' ) ); |
| 413 | return $history; |
| 414 | } |
| 415 | |
| 416 | /** |
| 417 | * Log an event for a given comment, storing it in comment_meta. |
| 418 | * |
| 419 | * @param int $comment_id The ID of the relevant comment. |
| 420 | * @param string $message The string description of the event. No longer used. |
| 421 | * @param string $event The event code. |
| 422 | * @param array $meta Metadata about the history entry. e.g., the user that reported or changed the status of a given comment. |
| 423 | */ |
| 424 | public static function update_comment_history( $comment_id, $message, $event=null, $meta=null ) { |
| 425 | global $current_user; |
| 426 | |
| 427 | $user = ''; |
| 428 | |
| 429 | $event = array( |
| 430 | 'time' => self::_get_microtime(), |
| 431 | 'event' => $event, |
| 432 | ); |
| 433 | |
| 434 | if ( is_object( $current_user ) && isset( $current_user->user_login ) ) { |
| 435 | $event['user'] = $current_user->user_login; |
| 436 | } |
| 437 | |
| 438 | if ( ! empty( $meta ) ) { |
| 439 | $event['meta'] = $meta; |
| 440 | } |
| 441 | |
| 442 | // $unique = false so as to allow multiple values per comment |
| 443 | $r = add_comment_meta( $comment_id, 'akismet_history', $event, false ); |
| 444 | } |
| 445 | |
| 446 | public static function check_db_comment( $id, $recheck_reason = 'recheck_queue' ) { |
| 447 | global $wpdb; |
| 448 | |
| 449 | $c = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->comments} WHERE comment_ID = %d", $id ), ARRAY_A ); |
| 450 | |
| 451 | if ( ! $c ) { |
| 452 | return new WP_Error( 'invalid-comment-id', __( 'Comment not found.', 'akismet' ) ); |
| 453 | } |
| 454 | |
| 455 | $c['user_ip'] = $c['comment_author_IP']; |
| 456 | $c['user_agent'] = $c['comment_agent']; |
| 457 | $c['referrer'] = ''; |
| 458 | $c['blog'] = get_option( 'home' ); |
| 459 | $c['blog_lang'] = get_locale(); |
| 460 | $c['blog_charset'] = get_option('blog_charset'); |
| 461 | $c['permalink'] = get_permalink($c['comment_post_ID']); |
| 462 | $c['recheck_reason'] = $recheck_reason; |
| 463 | |
| 464 | $c['user_role'] = ''; |
| 465 | if ( ! empty( $c['user_ID'] ) ) { |
| 466 | $c['user_role'] = Akismet::get_user_roles( $c['user_ID'] ); |
| 467 | } |
| 468 | |
| 469 | if ( self::is_test_mode() ) |
| 470 | $c['is_test'] = 'true'; |
| 471 | |
| 472 | $response = self::http_post( Akismet::build_query( $c ), 'comment-check' ); |
| 473 | |
| 474 | if ( ! empty( $response[1] ) ) { |
| 475 | return $response[1]; |
| 476 | } |
| 477 | |
| 478 | return false; |
| 479 | } |
| 480 | |
| 481 | public static function recheck_comment( $id, $recheck_reason = 'recheck_queue' ) { |
| 482 | add_comment_meta( $id, 'akismet_rechecking', true ); |
| 483 | |
| 484 | $api_response = self::check_db_comment( $id, $recheck_reason ); |
| 485 | |
| 486 | delete_comment_meta( $id, 'akismet_rechecking' ); |
| 487 | |
| 488 | if ( is_wp_error( $api_response ) ) { |
| 489 | // Invalid comment ID. |
| 490 | } |
| 491 | else if ( 'true' === $api_response ) { |
| 492 | wp_set_comment_status( $id, 'spam' ); |
| 493 | update_comment_meta( $id, 'akismet_result', 'true' ); |
| 494 | delete_comment_meta( $id, 'akismet_error' ); |
| 495 | delete_comment_meta( $id, 'akismet_delayed_moderation_email' ); |
| 496 | Akismet::update_comment_history( $id, '', 'recheck-spam' ); |
| 497 | } |
| 498 | elseif ( 'false' === $api_response ) { |
| 499 | update_comment_meta( $id, 'akismet_result', 'false' ); |
| 500 | delete_comment_meta( $id, 'akismet_error' ); |
| 501 | delete_comment_meta( $id, 'akismet_delayed_moderation_email' ); |
| 502 | Akismet::update_comment_history( $id, '', 'recheck-ham' ); |
| 503 | } |
| 504 | else { |
| 505 | // abnormal result: error |
| 506 | update_comment_meta( $id, 'akismet_result', 'error' ); |
| 507 | Akismet::update_comment_history( |
| 508 | $id, |
| 509 | '', |
| 510 | 'recheck-error', |
| 511 | array( 'response' => substr( $api_response, 0, 50 ) ) |
| 512 | ); |
| 513 | } |
| 514 | |
| 515 | return $api_response; |
| 516 | } |
| 517 | |
| 518 | public static function transition_comment_status( $new_status, $old_status, $comment ) { |
| 519 | |
| 520 | if ( $new_status == $old_status ) |
| 521 | return; |
| 522 | |
| 523 | # we don't need to record a history item for deleted comments |
| 524 | if ( $new_status == 'delete' ) |
| 525 | return; |
| 526 | |
| 527 | if ( !current_user_can( 'edit_post', $comment->comment_post_ID ) && !current_user_can( 'moderate_comments' ) ) |
| 528 | return; |
| 529 | |
| 530 | if ( defined('WP_IMPORTING') && WP_IMPORTING == true ) |
| 531 | return; |
| 532 | |
| 533 | // if this is present, it means the status has been changed by a re-check, not an explicit user action |
| 534 | if ( get_comment_meta( $comment->comment_ID, 'akismet_rechecking' ) ) |
| 535 | return; |
| 536 | |
| 537 | // Assumption alert: |
| 538 | // We want to submit comments to Akismet only when a moderator explicitly spams or approves it - not if the status |
| 539 | // is changed automatically by another plugin. Unfortunately WordPress doesn't provide an unambiguous way to |
| 540 | // determine why the transition_comment_status action was triggered. And there are several different ways by which |
| 541 | // to spam and unspam comments: bulk actions, ajax, links in moderation emails, the dashboard, and perhaps others. |
| 542 | // We'll assume that this is an explicit user action if certain POST/GET variables exist. |
| 543 | if ( |
| 544 | // status=spam: Marking as spam via the REST API or... |
| 545 | // 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?... |
| 546 | // status=approved: Unspamming via the REST API (Calypso) or... |
| 547 | ( isset( $_POST['status'] ) && in_array( $_POST['status'], array( 'spam', 'unspam', 'approved', ) ) ) |
| 548 | // spam=1: Clicking "Spam" underneath a comment in wp-admin and allowing the AJAX request to happen. |
| 549 | || ( isset( $_POST['spam'] ) && (int) $_POST['spam'] == 1 ) |
| 550 | // 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. |
| 551 | || ( isset( $_POST['unspam'] ) && (int) $_POST['unspam'] == 1 ) |
| 552 | // comment_status=spam/unspam: It's unclear where this is happening. |
| 553 | || ( isset( $_POST['comment_status'] ) && in_array( $_POST['comment_status'], array( 'spam', 'unspam' ) ) ) |
| 554 | // action=spam: Choosing "Mark as Spam" from the Bulk Actions dropdown in wp-admin (or the "Spam it" link in notification emails). |
| 555 | // action=unspam: Choosing "Not Spam" from the Bulk Actions dropdown in wp-admin. |
| 556 | // action=spamcomment: Following the "Spam" link below a comment in wp-admin (not allowing AJAX request to happen). |
| 557 | // action=unspamcomment: Following the "Not Spam" link below a comment in wp-admin (not allowing AJAX request to happen). |
| 558 | || ( isset( $_GET['action'] ) && in_array( $_GET['action'], array( 'spam', 'unspam', 'spamcomment', 'unspamcomment', ) ) ) |
| 559 | // action=editedcomment: Editing a comment via wp-admin (and possibly changing its status). |
| 560 | || ( isset( $_POST['action'] ) && in_array( $_POST['action'], array( 'editedcomment' ) ) ) |
| 561 | // for=jetpack: Moderation via the WordPress app, Calypso, anything powered by the Jetpack connection. |
| 562 | || ( isset( $_GET['for'] ) && ( 'jetpack' == $_GET['for'] ) && ( ! defined( 'IS_WPCOM' ) || ! IS_WPCOM ) ) |
| 563 | // Certain WordPress.com API requests |
| 564 | || ( defined( 'REST_API_REQUEST' ) && REST_API_REQUEST ) |
| 565 | // WordPress.org REST API requests |
| 566 | || ( defined( 'REST_REQUEST' ) && REST_REQUEST ) |
| 567 | ) { |
| 568 | if ( $new_status == 'spam' && ( $old_status == 'approved' || $old_status == 'unapproved' || !$old_status ) ) { |
| 569 | return self::submit_spam_comment( $comment->comment_ID ); |
| 570 | } elseif ( $old_status == 'spam' && ( $new_status == 'approved' || $new_status == 'unapproved' ) ) { |
| 571 | return self::submit_nonspam_comment( $comment->comment_ID ); |
| 572 | } |
| 573 | } |
| 574 | |
| 575 | self::update_comment_history( $comment->comment_ID, '', 'status-' . $new_status ); |
| 576 | } |
| 577 | |
| 578 | public static function submit_spam_comment( $comment_id ) { |
| 579 | global $wpdb, $current_user, $current_site; |
| 580 | |
| 581 | $comment_id = (int) $comment_id; |
| 582 | |
| 583 | $comment = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->comments} WHERE comment_ID = %d", $comment_id ) ); |
| 584 | |
| 585 | if ( !$comment ) // it was deleted |
| 586 | return; |
| 587 | |
| 588 | if ( 'spam' != $comment->comment_approved ) |
| 589 | return; |
| 590 | |
| 591 | // use the original version stored in comment_meta if available |
| 592 | $as_submitted = self::sanitize_comment_as_submitted( get_comment_meta( $comment_id, 'akismet_as_submitted', true ) ); |
| 593 | |
| 594 | if ( $as_submitted && is_array( $as_submitted ) && isset( $as_submitted['comment_content'] ) ) |
| 595 | $comment = (object) array_merge( (array)$comment, $as_submitted ); |
| 596 | |
| 597 | $comment->blog = get_option( 'home' ); |
| 598 | $comment->blog_lang = get_locale(); |
| 599 | $comment->blog_charset = get_option('blog_charset'); |
| 600 | $comment->permalink = get_permalink($comment->comment_post_ID); |
| 601 | |
| 602 | if ( is_object($current_user) ) |
| 603 | $comment->reporter = $current_user->user_login; |
| 604 | |
| 605 | if ( is_object($current_site) ) |
| 606 | $comment->site_domain = $current_site->domain; |
| 607 | |
| 608 | $comment->user_role = ''; |
| 609 | if ( ! empty( $comment->user_ID ) ) { |
| 610 | $comment->user_role = Akismet::get_user_roles( $comment->user_ID ); |
| 611 | } |
| 612 | |
| 613 | if ( self::is_test_mode() ) |
| 614 | $comment->is_test = 'true'; |
| 615 | |
| 616 | $post = get_post( $comment->comment_post_ID ); |
| 617 | |
| 618 | if ( ! is_null( $post ) ) { |
| 619 | $comment->comment_post_modified_gmt = $post->post_modified_gmt; |
| 620 | } |
| 621 | |
| 622 | $response = Akismet::http_post( Akismet::build_query( $comment ), 'submit-spam' ); |
| 623 | if ( $comment->reporter ) { |
| 624 | self::update_comment_history( $comment_id, '', 'report-spam' ); |
| 625 | update_comment_meta( $comment_id, 'akismet_user_result', 'true' ); |
| 626 | update_comment_meta( $comment_id, 'akismet_user', $comment->reporter ); |
| 627 | } |
| 628 | |
| 629 | do_action('akismet_submit_spam_comment', $comment_id, $response[1]); |
| 630 | } |
| 631 | |
| 632 | public static function submit_nonspam_comment( $comment_id ) { |
| 633 | global $wpdb, $current_user, $current_site; |
| 634 | |
| 635 | $comment_id = (int) $comment_id; |
| 636 | |
| 637 | $comment = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->comments} WHERE comment_ID = %d", $comment_id ) ); |
| 638 | if ( !$comment ) // it was deleted |
| 639 | return; |
| 640 | |
| 641 | // use the original version stored in comment_meta if available |
| 642 | $as_submitted = self::sanitize_comment_as_submitted( get_comment_meta( $comment_id, 'akismet_as_submitted', true ) ); |
| 643 | |
| 644 | if ( $as_submitted && is_array($as_submitted) && isset($as_submitted['comment_content']) ) |
| 645 | $comment = (object) array_merge( (array)$comment, $as_submitted ); |
| 646 | |
| 647 | $comment->blog = get_option( 'home' ); |
| 648 | $comment->blog_lang = get_locale(); |
| 649 | $comment->blog_charset = get_option('blog_charset'); |
| 650 | $comment->permalink = get_permalink( $comment->comment_post_ID ); |
| 651 | $comment->user_role = ''; |
| 652 | |
| 653 | if ( is_object($current_user) ) |
| 654 | $comment->reporter = $current_user->user_login; |
| 655 | |
| 656 | if ( is_object($current_site) ) |
| 657 | $comment->site_domain = $current_site->domain; |
| 658 | |
| 659 | if ( ! empty( $comment->user_ID ) ) { |
| 660 | $comment->user_role = Akismet::get_user_roles( $comment->user_ID ); |
| 661 | } |
| 662 | |
| 663 | if ( Akismet::is_test_mode() ) |
| 664 | $comment->is_test = 'true'; |
| 665 | |
| 666 | $post = get_post( $comment->comment_post_ID ); |
| 667 | |
| 668 | if ( ! is_null( $post ) ) { |
| 669 | $comment->comment_post_modified_gmt = $post->post_modified_gmt; |
| 670 | } |
| 671 | |
| 672 | $response = self::http_post( Akismet::build_query( $comment ), 'submit-ham' ); |
| 673 | if ( $comment->reporter ) { |
| 674 | self::update_comment_history( $comment_id, '', 'report-ham' ); |
| 675 | update_comment_meta( $comment_id, 'akismet_user_result', 'false' ); |
| 676 | update_comment_meta( $comment_id, 'akismet_user', $comment->reporter ); |
| 677 | } |
| 678 | |
| 679 | do_action('akismet_submit_nonspam_comment', $comment_id, $response[1]); |
| 680 | } |
| 681 | |
| 682 | public static function cron_recheck() { |
| 683 | global $wpdb; |
| 684 | |
| 685 | $api_key = self::get_api_key(); |
| 686 | |
| 687 | $status = self::verify_key( $api_key ); |
| 688 | if ( get_option( 'akismet_alert_code' ) || $status == 'invalid' ) { |
| 689 | // since there is currently a problem with the key, reschedule a check for 6 hours hence |
| 690 | wp_schedule_single_event( time() + 21600, 'akismet_schedule_cron_recheck' ); |
| 691 | do_action( 'akismet_scheduled_recheck', 'key-problem-' . get_option( 'akismet_alert_code' ) . '-' . $status ); |
| 692 | return false; |
| 693 | } |
| 694 | |
| 695 | delete_option('akismet_available_servers'); |
| 696 | |
| 697 | $comment_errors = $wpdb->get_col( "SELECT comment_id FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error' LIMIT 100" ); |
| 698 | |
| 699 | load_plugin_textdomain( 'akismet' ); |
| 700 | |
| 701 | foreach ( (array) $comment_errors as $comment_id ) { |
| 702 | // if the comment no longer exists, or is too old, remove the meta entry from the queue to avoid getting stuck |
| 703 | $comment = get_comment( $comment_id ); |
| 704 | |
| 705 | if ( |
| 706 | ! $comment // Comment has been deleted |
| 707 | || strtotime( $comment->comment_date_gmt ) < strtotime( "-15 days" ) // Comment is too old. |
| 708 | || $comment->comment_approved !== "0" // Comment is no longer in the Pending queue |
| 709 | ) { |
| 710 | echo "Deleting"; |
| 711 | delete_comment_meta( $comment_id, 'akismet_error' ); |
| 712 | delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' ); |
| 713 | continue; |
| 714 | } |
| 715 | |
| 716 | add_comment_meta( $comment_id, 'akismet_rechecking', true ); |
| 717 | $status = self::check_db_comment( $comment_id, 'retry' ); |
| 718 | |
| 719 | $event = ''; |
| 720 | if ( $status == 'true' ) { |
| 721 | $event = 'cron-retry-spam'; |
| 722 | } elseif ( $status == 'false' ) { |
| 723 | $event = 'cron-retry-ham'; |
| 724 | } |
| 725 | |
| 726 | // If we got back a legit response then update the comment history |
| 727 | // other wise just bail now and try again later. No point in |
| 728 | // re-trying all the comments once we hit one failure. |
| 729 | if ( !empty( $event ) ) { |
| 730 | delete_comment_meta( $comment_id, 'akismet_error' ); |
| 731 | self::update_comment_history( $comment_id, '', $event ); |
| 732 | update_comment_meta( $comment_id, 'akismet_result', $status ); |
| 733 | // make sure the comment status is still pending. if it isn't, that means the user has already moved it elsewhere. |
| 734 | $comment = get_comment( $comment_id ); |
| 735 | if ( $comment && 'unapproved' == wp_get_comment_status( $comment_id ) ) { |
| 736 | if ( $status == 'true' ) { |
| 737 | wp_spam_comment( $comment_id ); |
| 738 | } elseif ( $status == 'false' ) { |
| 739 | // comment is good, but it's still in the pending queue. depending on the moderation settings |
| 740 | // we may need to change it to approved. |
| 741 | if ( check_comment($comment->comment_author, $comment->comment_author_email, $comment->comment_author_url, $comment->comment_content, $comment->comment_author_IP, $comment->comment_agent, $comment->comment_type) ) |
| 742 | wp_set_comment_status( $comment_id, 1 ); |
| 743 | else if ( get_comment_meta( $comment_id, 'akismet_delayed_moderation_email', true ) ) |
| 744 | wp_notify_moderator( $comment_id ); |
| 745 | } |
| 746 | } |
| 747 | |
| 748 | delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' ); |
| 749 | } else { |
| 750 | // If this comment has been pending moderation for longer than MAX_DELAY_BEFORE_MODERATION_EMAIL, |
| 751 | // send a moderation email now. |
| 752 | if ( ( intval( gmdate( 'U' ) ) - strtotime( $comment->comment_date_gmt ) ) < self::MAX_DELAY_BEFORE_MODERATION_EMAIL ) { |
| 753 | delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' ); |
| 754 | wp_notify_moderator( $comment_id ); |
| 755 | } |
| 756 | |
| 757 | delete_comment_meta( $comment_id, 'akismet_rechecking' ); |
| 758 | wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' ); |
| 759 | do_action( 'akismet_scheduled_recheck', 'check-db-comment-' . $status ); |
| 760 | return; |
| 761 | } |
| 762 | delete_comment_meta( $comment_id, 'akismet_rechecking' ); |
| 763 | } |
| 764 | |
| 765 | $remaining = $wpdb->get_var( "SELECT COUNT(*) FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error'" ); |
| 766 | if ( $remaining && !wp_next_scheduled('akismet_schedule_cron_recheck') ) { |
| 767 | wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' ); |
| 768 | do_action( 'akismet_scheduled_recheck', 'remaining' ); |
| 769 | } |
| 770 | } |
| 771 | |
| 772 | public static function fix_scheduled_recheck() { |
| 773 | $future_check = wp_next_scheduled( 'akismet_schedule_cron_recheck' ); |
| 774 | if ( !$future_check ) { |
| 775 | return; |
| 776 | } |
| 777 | |
| 778 | if ( get_option( 'akismet_alert_code' ) > 0 ) { |
| 779 | return; |
| 780 | } |
| 781 | |
| 782 | $check_range = time() + 1200; |
| 783 | if ( $future_check > $check_range ) { |
| 784 | wp_clear_scheduled_hook( 'akismet_schedule_cron_recheck' ); |
| 785 | wp_schedule_single_event( time() + 300, 'akismet_schedule_cron_recheck' ); |
| 786 | do_action( 'akismet_scheduled_recheck', 'fix-scheduled-recheck' ); |
| 787 | } |
| 788 | } |
| 789 | |
| 790 | public static function add_comment_nonce( $post_id ) { |
| 791 | /** |
| 792 | * To disable the Akismet comment nonce, add a filter for the 'akismet_comment_nonce' tag |
| 793 | * and return any string value that is not 'true' or '' (empty string). |
| 794 | * |
| 795 | * Don't return boolean false, because that implies that the 'akismet_comment_nonce' option |
| 796 | * has not been set and that Akismet should just choose the default behavior for that |
| 797 | * situation. |
| 798 | */ |
| 799 | $akismet_comment_nonce_option = apply_filters( 'akismet_comment_nonce', get_option( 'akismet_comment_nonce' ) ); |
| 800 | |
| 801 | if ( $akismet_comment_nonce_option == 'true' || $akismet_comment_nonce_option == '' ) { |
| 802 | echo '<p style="display: none;">'; |
| 803 | wp_nonce_field( 'akismet_comment_nonce_' . $post_id, 'akismet_comment_nonce', FALSE ); |
| 804 | echo '</p>'; |
| 805 | } |
| 806 | } |
| 807 | |
| 808 | public static function is_test_mode() { |
| 809 | return defined('AKISMET_TEST_MODE') && AKISMET_TEST_MODE; |
| 810 | } |
| 811 | |
| 812 | public static function allow_discard() { |
| 813 | if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) |
| 814 | return false; |
| 815 | if ( is_user_logged_in() ) |
| 816 | return false; |
| 817 | |
| 818 | return ( get_option( 'akismet_strictness' ) === '1' ); |
| 819 | } |
| 820 | |
| 821 | public static function get_ip_address() { |
| 822 | return isset( $_SERVER['REMOTE_ADDR'] ) ? $_SERVER['REMOTE_ADDR'] : null; |
| 823 | } |
| 824 | |
| 825 | /** |
| 826 | * Do these two comments, without checking the comment_ID, "match"? |
| 827 | * |
| 828 | * @param mixed $comment1 A comment object or array. |
| 829 | * @param mixed $comment2 A comment object or array. |
| 830 | * @return bool Whether the two comments should be treated as the same comment. |
| 831 | */ |
| 832 | private static function comments_match( $comment1, $comment2 ) { |
| 833 | $comment1 = (array) $comment1; |
| 834 | $comment2 = (array) $comment2; |
| 835 | |
| 836 | // Set default values for these strings that we check in order to simplify |
| 837 | // the checks and avoid PHP warnings. |
| 838 | if ( ! isset( $comment1['comment_author'] ) ) { |
| 839 | $comment1['comment_author'] = ''; |
| 840 | } |
| 841 | |
| 842 | if ( ! isset( $comment2['comment_author'] ) ) { |
| 843 | $comment2['comment_author'] = ''; |
| 844 | } |
| 845 | |
| 846 | if ( ! isset( $comment1['comment_author_email'] ) ) { |
| 847 | $comment1['comment_author_email'] = ''; |
| 848 | } |
| 849 | |
| 850 | if ( ! isset( $comment2['comment_author_email'] ) ) { |
| 851 | $comment2['comment_author_email'] = ''; |
| 852 | } |
| 853 | |
| 854 | $comments_match = ( |
| 855 | isset( $comment1['comment_post_ID'], $comment2['comment_post_ID'] ) |
| 856 | && intval( $comment1['comment_post_ID'] ) == intval( $comment2['comment_post_ID'] ) |
| 857 | && ( |
| 858 | // The comment author length max is 255 characters, limited by the TINYTEXT column type. |
| 859 | // If the comment author includes multibyte characters right around the 255-byte mark, they |
| 860 | // may be stripped when the author is saved in the DB, so a 300+ char author may turn into |
| 861 | // a 253-char author when it's saved, not 255 exactly. The longest possible character is |
| 862 | // theoretically 6 bytes, so we'll only look at the first 248 bytes to be safe. |
| 863 | substr( $comment1['comment_author'], 0, 248 ) == substr( $comment2['comment_author'], 0, 248 ) |
| 864 | || substr( stripslashes( $comment1['comment_author'] ), 0, 248 ) == substr( $comment2['comment_author'], 0, 248 ) |
| 865 | || substr( $comment1['comment_author'], 0, 248 ) == substr( stripslashes( $comment2['comment_author'] ), 0, 248 ) |
| 866 | // Certain long comment author names will be truncated to nothing, depending on their encoding. |
| 867 | || ( ! $comment1['comment_author'] && strlen( $comment2['comment_author'] ) > 248 ) |
| 868 | || ( ! $comment2['comment_author'] && strlen( $comment1['comment_author'] ) > 248 ) |
| 869 | ) |
| 870 | && ( |
| 871 | // The email max length is 100 characters, limited by the VARCHAR(100) column type. |
| 872 | // Same argument as above for only looking at the first 93 characters. |
| 873 | substr( $comment1['comment_author_email'], 0, 93 ) == substr( $comment2['comment_author_email'], 0, 93 ) |
| 874 | || substr( stripslashes( $comment1['comment_author_email'] ), 0, 93 ) == substr( $comment2['comment_author_email'], 0, 93 ) |
| 875 | || substr( $comment1['comment_author_email'], 0, 93 ) == substr( stripslashes( $comment2['comment_author_email'] ), 0, 93 ) |
| 876 | // Very long emails can be truncated and then stripped if the [0:100] substring isn't a valid address. |
| 877 | || ( ! $comment1['comment_author_email'] && strlen( $comment2['comment_author_email'] ) > 100 ) |
| 878 | || ( ! $comment2['comment_author_email'] && strlen( $comment1['comment_author_email'] ) > 100 ) |
| 879 | ) |
| 880 | ); |
| 881 | |
| 882 | return $comments_match; |
| 883 | } |
| 884 | |
| 885 | // Does the supplied comment match the details of the one most recently stored in self::$last_comment? |
| 886 | public static function matches_last_comment( $comment ) { |
| 887 | return self::comments_match( self::$last_comment, $comment ); |
| 888 | } |
| 889 | |
| 890 | private static function get_user_agent() { |
| 891 | return isset( $_SERVER['HTTP_USER_AGENT'] ) ? $_SERVER['HTTP_USER_AGENT'] : null; |
| 892 | } |
| 893 | |
| 894 | private static function get_referer() { |
| 895 | return isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : null; |
| 896 | } |
| 897 | |
| 898 | // return a comma-separated list of role names for the given user |
| 899 | public static function get_user_roles( $user_id ) { |
| 900 | $roles = false; |
| 901 | |
| 902 | if ( !class_exists('WP_User') ) |
| 903 | return false; |
| 904 | |
| 905 | if ( $user_id > 0 ) { |
| 906 | $comment_user = new WP_User( $user_id ); |
| 907 | if ( isset( $comment_user->roles ) ) |
| 908 | $roles = join( ',', $comment_user->roles ); |
| 909 | } |
| 910 | |
| 911 | if ( is_multisite() && is_super_admin( $user_id ) ) { |
| 912 | if ( empty( $roles ) ) { |
| 913 | $roles = 'super_admin'; |
| 914 | } else { |
| 915 | $comment_user->roles[] = 'super_admin'; |
| 916 | $roles = join( ',', $comment_user->roles ); |
| 917 | } |
| 918 | } |
| 919 | |
| 920 | return $roles; |
| 921 | } |
| 922 | |
| 923 | // filter handler used to return a spam result to pre_comment_approved |
| 924 | public static function last_comment_status( $approved, $comment ) { |
| 925 | if ( is_null( self::$last_comment_result ) ) { |
| 926 | // We didn't have reason to store the result of the last check. |
| 927 | return $approved; |
| 928 | } |
| 929 | |
| 930 | // Only do this if it's the correct comment |
| 931 | if ( ! self::matches_last_comment( $comment ) ) { |
| 932 | self::log( "comment_is_spam mismatched comment, returning unaltered $approved" ); |
| 933 | return $approved; |
| 934 | } |
| 935 | |
| 936 | if ( 'trash' === $approved ) { |
| 937 | // If the last comment we checked has had its approval set to 'trash', |
| 938 | // then it failed the comment blacklist check. Let that blacklist override |
| 939 | // the spam check, since users have the (valid) expectation that when |
| 940 | // they fill out their blacklists, comments that match it will always |
| 941 | // end up in the trash. |
| 942 | return $approved; |
| 943 | } |
| 944 | |
| 945 | // bump the counter here instead of when the filter is added to reduce the possibility of overcounting |
| 946 | if ( $incr = apply_filters('akismet_spam_count_incr', 1) ) |
| 947 | update_option( 'akismet_spam_count', get_option('akismet_spam_count') + $incr ); |
| 948 | |
| 949 | return self::$last_comment_result; |
| 950 | } |
| 951 | |
| 952 | /** |
| 953 | * If Akismet is temporarily unreachable, we don't want to "spam" the blogger with |
| 954 | * moderation emails for comments that will be automatically cleared or spammed on |
| 955 | * the next retry. |
| 956 | * |
| 957 | * For comments that will be rechecked later, empty the list of email addresses that |
| 958 | * the moderation email would be sent to. |
| 959 | * |
| 960 | * @param array $emails An array of email addresses that the moderation email will be sent to. |
| 961 | * @param int $comment_id The ID of the relevant comment. |
| 962 | * @return array An array of email addresses that the moderation email will be sent to. |
| 963 | */ |
| 964 | public static function disable_moderation_emails_if_unreachable( $emails, $comment_id ) { |
| 965 | if ( ! empty( self::$prevent_moderation_email_for_these_comments ) && ! empty( $emails ) ) { |
| 966 | $comment = get_comment( $comment_id ); |
| 967 | |
| 968 | foreach ( self::$prevent_moderation_email_for_these_comments as $possible_match ) { |
| 969 | if ( self::comments_match( $possible_match, $comment ) ) { |
| 970 | update_comment_meta( $comment_id, 'akismet_delayed_moderation_email', true ); |
| 971 | return array(); |
| 972 | } |
| 973 | } |
| 974 | } |
| 975 | |
| 976 | return $emails; |
| 977 | } |
| 978 | |
| 979 | public static function _cmp_time( $a, $b ) { |
| 980 | return $a['time'] > $b['time'] ? -1 : 1; |
| 981 | } |
| 982 | |
| 983 | public static function _get_microtime() { |
| 984 | $mtime = explode( ' ', microtime() ); |
| 985 | return $mtime[1] + $mtime[0]; |
| 986 | } |
| 987 | |
| 988 | /** |
| 989 | * Make a POST request to the Akismet API. |
| 990 | * |
| 991 | * @param string $request The body of the request. |
| 992 | * @param string $path The path for the request. |
| 993 | * @param string $ip The specific IP address to hit. |
| 994 | * @return array A two-member array consisting of the headers and the response body, both empty in the case of a failure. |
| 995 | */ |
| 996 | public static function http_post( $request, $path, $ip=null ) { |
| 997 | |
| 998 | $akismet_ua = sprintf( 'WordPress/%s | Akismet/%s', $GLOBALS['wp_version'], constant( 'AKISMET_VERSION' ) ); |
| 999 | $akismet_ua = apply_filters( 'akismet_ua', $akismet_ua ); |
| 1000 | |
| 1001 | $content_length = strlen( $request ); |
| 1002 | |
| 1003 | $api_key = self::get_api_key(); |
| 1004 | $host = self::API_HOST; |
| 1005 | |
| 1006 | if ( !empty( $api_key ) ) |
| 1007 | $host = $api_key.'.'.$host; |
| 1008 | |
| 1009 | $http_host = $host; |
| 1010 | // use a specific IP if provided |
| 1011 | // needed by Akismet_Admin::check_server_connectivity() |
| 1012 | if ( $ip && long2ip( ip2long( $ip ) ) ) { |
| 1013 | $http_host = $ip; |
| 1014 | } |
| 1015 | |
| 1016 | $http_args = array( |
| 1017 | 'body' => $request, |
| 1018 | 'headers' => array( |
| 1019 | 'Content-Type' => 'application/x-www-form-urlencoded; charset=' . get_option( 'blog_charset' ), |
| 1020 | 'Host' => $host, |
| 1021 | 'User-Agent' => $akismet_ua, |
| 1022 | ), |
| 1023 | 'httpversion' => '1.0', |
| 1024 | 'timeout' => 15 |
| 1025 | ); |
| 1026 | |
| 1027 | $akismet_url = $http_akismet_url = "http://{$http_host}/1.1/{$path}"; |
| 1028 | |
| 1029 | /** |
| 1030 | * Try SSL first; if that fails, try without it and don't try it again for a while. |
| 1031 | */ |
| 1032 | |
| 1033 | $ssl = $ssl_failed = false; |
| 1034 | |
| 1035 | // Check if SSL requests were disabled fewer than X hours ago. |
| 1036 | $ssl_disabled = get_option( 'akismet_ssl_disabled' ); |
| 1037 | |
| 1038 | if ( $ssl_disabled && $ssl_disabled < ( time() - 60 * 60 * 24 ) ) { // 24 hours |
| 1039 | $ssl_disabled = false; |
| 1040 | delete_option( 'akismet_ssl_disabled' ); |
| 1041 | } |
| 1042 | else if ( $ssl_disabled ) { |
| 1043 | do_action( 'akismet_ssl_disabled' ); |
| 1044 | } |
| 1045 | |
| 1046 | if ( ! $ssl_disabled && ( $ssl = wp_http_supports( array( 'ssl' ) ) ) ) { |
| 1047 | $akismet_url = set_url_scheme( $akismet_url, 'https' ); |
| 1048 | |
| 1049 | do_action( 'akismet_https_request_pre' ); |
| 1050 | } |
| 1051 | |
| 1052 | $response = wp_remote_post( $akismet_url, $http_args ); |
| 1053 | |
| 1054 | Akismet::log( compact( 'akismet_url', 'http_args', 'response' ) ); |
| 1055 | |
| 1056 | if ( $ssl && is_wp_error( $response ) ) { |
| 1057 | do_action( 'akismet_https_request_failure', $response ); |
| 1058 | |
| 1059 | // Intermittent connection problems may cause the first HTTPS |
| 1060 | // request to fail and subsequent HTTP requests to succeed randomly. |
| 1061 | // Retry the HTTPS request once before disabling SSL for a time. |
| 1062 | $response = wp_remote_post( $akismet_url, $http_args ); |
| 1063 | |
| 1064 | Akismet::log( compact( 'akismet_url', 'http_args', 'response' ) ); |
| 1065 | |
| 1066 | if ( is_wp_error( $response ) ) { |
| 1067 | $ssl_failed = true; |
| 1068 | |
| 1069 | do_action( 'akismet_https_request_failure', $response ); |
| 1070 | |
| 1071 | do_action( 'akismet_http_request_pre' ); |
| 1072 | |
| 1073 | // Try the request again without SSL. |
| 1074 | $response = wp_remote_post( $http_akismet_url, $http_args ); |
| 1075 | |
| 1076 | Akismet::log( compact( 'http_akismet_url', 'http_args', 'response' ) ); |
| 1077 | } |
| 1078 | } |
| 1079 | |
| 1080 | if ( is_wp_error( $response ) ) { |
| 1081 | do_action( 'akismet_request_failure', $response ); |
| 1082 | |
| 1083 | return array( '', '' ); |
| 1084 | } |
| 1085 | |
| 1086 | if ( $ssl_failed ) { |
| 1087 | // The request failed when using SSL but succeeded without it. Disable SSL for future requests. |
| 1088 | update_option( 'akismet_ssl_disabled', time() ); |
| 1089 | |
| 1090 | do_action( 'akismet_https_disabled' ); |
| 1091 | } |
| 1092 | |
| 1093 | $simplified_response = array( $response['headers'], $response['body'] ); |
| 1094 | |
| 1095 | self::update_alert( $simplified_response ); |
| 1096 | |
| 1097 | return $simplified_response; |
| 1098 | } |
| 1099 | |
| 1100 | // given a response from an API call like check_key_status(), update the alert code options if an alert is present. |
| 1101 | public static function update_alert( $response ) { |
| 1102 | $code = $msg = null; |
| 1103 | if ( isset( $response[0]['x-akismet-alert-code'] ) ) { |
| 1104 | $code = $response[0]['x-akismet-alert-code']; |
| 1105 | $msg = $response[0]['x-akismet-alert-msg']; |
| 1106 | } |
| 1107 | |
| 1108 | // only call update_option() if the value has changed |
| 1109 | if ( $code != get_option( 'akismet_alert_code' ) ) { |
| 1110 | if ( ! $code ) { |
| 1111 | delete_option( 'akismet_alert_code' ); |
| 1112 | delete_option( 'akismet_alert_msg' ); |
| 1113 | } |
| 1114 | else { |
| 1115 | update_option( 'akismet_alert_code', $code ); |
| 1116 | update_option( 'akismet_alert_msg', $msg ); |
| 1117 | } |
| 1118 | } |
| 1119 | } |
| 1120 | |
| 1121 | public static function load_form_js() { |
| 1122 | wp_register_script( 'akismet-form', plugin_dir_url( __FILE__ ) . '_inc/form.js', array(), AKISMET_VERSION, true ); |
| 1123 | wp_enqueue_script( 'akismet-form' ); |
| 1124 | } |
| 1125 | |
| 1126 | /** |
| 1127 | * Mark form.js as async. Because nothing depends on it, it can run at any time |
| 1128 | * after it's loaded, and the browser won't have to wait for it to load to continue |
| 1129 | * parsing the rest of the page. |
| 1130 | */ |
| 1131 | public static function set_form_js_async( $tag, $handle, $src ) { |
| 1132 | if ( 'akismet-form' !== $handle ) { |
| 1133 | return $tag; |
| 1134 | } |
| 1135 | |
| 1136 | return preg_replace( '/^<script /i', '<script async="async" ', $tag ); |
| 1137 | } |
| 1138 | |
| 1139 | public static function inject_ak_js( $fields ) { |
| 1140 | echo '<p style="display: none;">'; |
| 1141 | echo '<input type="hidden" id="ak_js" name="ak_js" value="' . mt_rand( 0, 250 ) . '"/>'; |
| 1142 | echo '</p>'; |
| 1143 | } |
| 1144 | |
| 1145 | private static function bail_on_activation( $message, $deactivate = true ) { |
| 1146 | ?> |
| 1147 | <!doctype html> |
| 1148 | <html> |
| 1149 | <head> |
| 1150 | <meta charset="<?php bloginfo( 'charset' ); ?>"> |
| 1151 | <style> |
| 1152 | * { |
| 1153 | text-align: center; |
| 1154 | margin: 0; |
| 1155 | padding: 0; |
| 1156 | font-family: "Lucida Grande",Verdana,Arial,"Bitstream Vera Sans",sans-serif; |
| 1157 | } |
| 1158 | p { |
| 1159 | margin-top: 1em; |
| 1160 | font-size: 18px; |
| 1161 | } |
| 1162 | </style> |
| 1163 | <body> |
| 1164 | <p><?php echo esc_html( $message ); ?></p> |
| 1165 | </body> |
| 1166 | </html> |
| 1167 | <?php |
| 1168 | if ( $deactivate ) { |
| 1169 | $plugins = get_option( 'active_plugins' ); |
| 1170 | $akismet = plugin_basename( AKISMET__PLUGIN_DIR . 'akismet.php' ); |
| 1171 | $update = false; |
| 1172 | foreach ( $plugins as $i => $plugin ) { |
| 1173 | if ( $plugin === $akismet ) { |
| 1174 | $plugins[$i] = false; |
| 1175 | $update = true; |
| 1176 | } |
| 1177 | } |
| 1178 | |
| 1179 | if ( $update ) { |
| 1180 | update_option( 'active_plugins', array_filter( $plugins ) ); |
| 1181 | } |
| 1182 | } |
| 1183 | exit; |
| 1184 | } |
| 1185 | |
| 1186 | public static function view( $name, array $args = array() ) { |
| 1187 | $args = apply_filters( 'akismet_view_arguments', $args, $name ); |
| 1188 | |
| 1189 | foreach ( $args AS $key => $val ) { |
| 1190 | $$key = $val; |
| 1191 | } |
| 1192 | |
| 1193 | load_plugin_textdomain( 'akismet' ); |
| 1194 | |
| 1195 | $file = AKISMET__PLUGIN_DIR . 'views/'. $name . '.php'; |
| 1196 | |
| 1197 | include( $file ); |
| 1198 | } |
| 1199 | |
| 1200 | /** |
| 1201 | * Attached to activate_{ plugin_basename( __FILES__ ) } by register_activation_hook() |
| 1202 | * @static |
| 1203 | */ |
| 1204 | public static function plugin_activation() { |
| 1205 | if ( version_compare( $GLOBALS['wp_version'], AKISMET__MINIMUM_WP_VERSION, '<' ) ) { |
| 1206 | load_plugin_textdomain( 'akismet' ); |
| 1207 | |
| 1208 | $message = '<strong>'.sprintf(esc_html__( 'Akismet %s requires WordPress %s or higher.' , 'akismet'), AKISMET_VERSION, AKISMET__MINIMUM_WP_VERSION ).'</strong> '.sprintf(__('Please <a href="%1$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/'); |
| 1209 | |
| 1210 | Akismet::bail_on_activation( $message ); |
| 1211 | } |
| 1212 | } |
| 1213 | |
| 1214 | /** |
| 1215 | * Removes all connection options |
| 1216 | * @static |
| 1217 | */ |
| 1218 | public static function plugin_deactivation( ) { |
| 1219 | self::deactivate_key( self::get_api_key() ); |
| 1220 | |
| 1221 | // Remove any scheduled cron jobs. |
| 1222 | $akismet_cron_events = array( |
| 1223 | 'akismet_schedule_cron_recheck', |
| 1224 | 'akismet_scheduled_delete', |
| 1225 | ); |
| 1226 | |
| 1227 | foreach ( $akismet_cron_events as $akismet_cron_event ) { |
| 1228 | $timestamp = wp_next_scheduled( $akismet_cron_event ); |
| 1229 | |
| 1230 | if ( $timestamp ) { |
| 1231 | wp_unschedule_event( $timestamp, $akismet_cron_event ); |
| 1232 | } |
| 1233 | } |
| 1234 | } |
| 1235 | |
| 1236 | /** |
| 1237 | * Essentially a copy of WP's build_query but one that doesn't expect pre-urlencoded values. |
| 1238 | * |
| 1239 | * @param array $args An array of key => value pairs |
| 1240 | * @return string A string ready for use as a URL query string. |
| 1241 | */ |
| 1242 | public static function build_query( $args ) { |
| 1243 | return _http_build_query( $args, '', '&' ); |
| 1244 | } |
| 1245 | |
| 1246 | /** |
| 1247 | * Log debugging info to the error log. |
| 1248 | * |
| 1249 | * Enabled when WP_DEBUG_LOG is enabled (and WP_DEBUG, since according to |
| 1250 | * core, "WP_DEBUG_DISPLAY and WP_DEBUG_LOG perform no function unless |
| 1251 | * WP_DEBUG is true), but can be disabled via the akismet_debug_log filter. |
| 1252 | * |
| 1253 | * @param mixed $akismet_debug The data to log. |
| 1254 | */ |
| 1255 | public static function log( $akismet_debug ) { |
| 1256 | if ( apply_filters( 'akismet_debug_log', defined( 'WP_DEBUG' ) && WP_DEBUG && defined( 'WP_DEBUG_LOG' ) && WP_DEBUG_LOG && defined( 'AKISMET_DEBUG' ) && AKISMET_DEBUG ) ) { |
| 1257 | error_log( print_r( compact( 'akismet_debug' ), true ) ); |
| 1258 | } |
| 1259 | } |
| 1260 | |
| 1261 | public static function pre_check_pingback( $method ) { |
| 1262 | if ( $method !== 'pingback.ping' ) |
| 1263 | return; |
| 1264 | |
| 1265 | global $wp_xmlrpc_server; |
| 1266 | |
| 1267 | if ( !is_object( $wp_xmlrpc_server ) ) |
| 1268 | return false; |
| 1269 | |
| 1270 | // Lame: tightly coupled with the IXR class. |
| 1271 | $args = $wp_xmlrpc_server->message->params; |
| 1272 | |
| 1273 | if ( !empty( $args[1] ) ) { |
| 1274 | $post_id = url_to_postid( $args[1] ); |
| 1275 | |
| 1276 | // If this gets through the pre-check, make sure we properly identify the outbound request as a pingback verification |
| 1277 | Akismet::pingback_forwarded_for( null, $args[0] ); |
| 1278 | add_filter( 'http_request_args', array( 'Akismet', 'pingback_forwarded_for' ), 10, 2 ); |
| 1279 | |
| 1280 | $comment = array( |
| 1281 | 'comment_author_url' => $args[0], |
| 1282 | 'comment_post_ID' => $post_id, |
| 1283 | 'comment_author' => '', |
| 1284 | 'comment_author_email' => '', |
| 1285 | 'comment_content' => '', |
| 1286 | 'comment_type' => 'pingback', |
| 1287 | 'akismet_pre_check' => '1', |
| 1288 | 'comment_pingback_target' => $args[1], |
| 1289 | ); |
| 1290 | |
| 1291 | $comment = Akismet::auto_check_comment( $comment ); |
| 1292 | |
| 1293 | if ( isset( $comment['akismet_result'] ) && 'true' == $comment['akismet_result'] ) { |
| 1294 | // Lame: tightly coupled with the IXR classes. Unfortunately the action provides no context and no way to return anything. |
| 1295 | $wp_xmlrpc_server->error( new IXR_Error( 0, 'Invalid discovery target' ) ); |
| 1296 | } |
| 1297 | } |
| 1298 | } |
| 1299 | |
| 1300 | public static function pingback_forwarded_for( $r, $url ) { |
| 1301 | static $urls = array(); |
| 1302 | |
| 1303 | // Call this with $r == null to prime the callback to add headers on a specific URL |
| 1304 | if ( is_null( $r ) && !in_array( $url, $urls ) ) { |
| 1305 | $urls[] = $url; |
| 1306 | } |
| 1307 | |
| 1308 | // Add X-Pingback-Forwarded-For header, but only for requests to a specific URL (the apparent pingback source) |
| 1309 | if ( is_array( $r ) && is_array( $r['headers'] ) && !isset( $r['headers']['X-Pingback-Forwarded-For'] ) && in_array( $url, $urls ) ) { |
| 1310 | $remote_ip = preg_replace( '/[^a-fx0-9:.,]/i', '', $_SERVER['REMOTE_ADDR'] ); |
| 1311 | |
| 1312 | // Note: this assumes REMOTE_ADDR is correct, and it may not be if a reverse proxy or CDN is in use |
| 1313 | $r['headers']['X-Pingback-Forwarded-For'] = $remote_ip; |
| 1314 | |
| 1315 | // Also identify the request as a pingback verification in the UA string so it appears in logs |
| 1316 | $r['user-agent'] .= '; verifying pingback from ' . $remote_ip; |
| 1317 | } |
| 1318 | |
| 1319 | return $r; |
| 1320 | } |
| 1321 | |
| 1322 | /** |
| 1323 | * Ensure that we are loading expected scalar values from akismet_as_submitted commentmeta. |
| 1324 | * |
| 1325 | * @param mixed $meta_value |
| 1326 | * @return mixed |
| 1327 | */ |
| 1328 | private static function sanitize_comment_as_submitted( $meta_value ) { |
| 1329 | if ( empty( $meta_value ) ) { |
| 1330 | return $meta_value; |
| 1331 | } |
| 1332 | |
| 1333 | $meta_value = (array) $meta_value; |
| 1334 | |
| 1335 | foreach ( $meta_value as $key => $value ) { |
| 1336 | if ( ! isset( self::$comment_as_submitted_allowed_keys[$key] ) || ! is_scalar( $value ) ) { |
| 1337 | unset( $meta_value[$key] ); |
| 1338 | } |
| 1339 | } |
| 1340 | |
| 1341 | return $meta_value; |
| 1342 | } |
| 1343 | |
| 1344 | public static function predefined_api_key() { |
| 1345 | if ( defined( 'WPCOM_API_KEY' ) ) { |
| 1346 | return true; |
| 1347 | } |
| 1348 | |
| 1349 | return apply_filters( 'akismet_predefined_api_key', false ); |
| 1350 | } |
| 1351 | } |
| 1352 |