akismet
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class.akismet-admin.php
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class.akismet.php
2065 lines
| 1 | <?php |
| 2 | |
| 3 | // We plan to gradually remove all of the disabled lint rules below. |
| 4 | // phpcs:disable WordPress.Security.ValidatedSanitizedInput.MissingUnslash |
| 5 | // phpcs:disable WordPress.Security.ValidatedSanitizedInput.InputNotSanitized |
| 6 | // phpcs:disable WordPress.Security.NonceVerification.Missing |
| 7 | // phpcs:disable Squiz.PHP.DisallowMultipleAssignments.FoundInControlStructure |
| 8 | |
| 9 | class Akismet { |
| 10 | const API_HOST = 'rest.akismet.com'; |
| 11 | const API_PORT = 80; |
| 12 | const MAX_DELAY_BEFORE_MODERATION_EMAIL = 86400; // One day in seconds |
| 13 | const ALERT_CODE_COMMERCIAL = 30001; |
| 14 | |
| 15 | public static $limit_notices = array( |
| 16 | 10501 => 'FIRST_MONTH_OVER_LIMIT', |
| 17 | 10502 => 'SECOND_MONTH_OVER_LIMIT', |
| 18 | 10504 => 'THIRD_MONTH_APPROACHING_LIMIT', |
| 19 | 10508 => 'THIRD_MONTH_OVER_LIMIT', |
| 20 | 10516 => 'FOUR_PLUS_MONTHS_OVER_LIMIT', |
| 21 | ); |
| 22 | |
| 23 | private static $last_comment = ''; |
| 24 | private static $initiated = false; |
| 25 | private static $prevent_moderation_email_for_these_comments = array(); |
| 26 | private static $last_comment_result = null; |
| 27 | private static $comment_as_submitted_allowed_keys = array( |
| 28 | 'blog' => '', |
| 29 | 'blog_charset' => '', |
| 30 | 'blog_lang' => '', |
| 31 | 'blog_ua' => '', |
| 32 | 'comment_agent' => '', |
| 33 | 'comment_author' => '', |
| 34 | 'comment_author_IP' => '', |
| 35 | 'comment_author_email' => '', |
| 36 | 'comment_author_url' => '', |
| 37 | 'comment_content' => '', |
| 38 | 'comment_date_gmt' => '', |
| 39 | 'comment_tags' => '', |
| 40 | 'comment_type' => '', |
| 41 | 'guid' => '', |
| 42 | 'is_test' => '', |
| 43 | 'permalink' => '', |
| 44 | 'reporter' => '', |
| 45 | 'site_domain' => '', |
| 46 | 'submit_referer' => '', |
| 47 | 'submit_uri' => '', |
| 48 | 'user_ID' => '', |
| 49 | 'user_agent' => '', |
| 50 | 'user_id' => '', |
| 51 | 'user_ip' => '', |
| 52 | ); |
| 53 | |
| 54 | public static function init() { |
| 55 | if ( ! self::$initiated ) { |
| 56 | self::init_hooks(); |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * Initializes WordPress hooks |
| 62 | */ |
| 63 | private static function init_hooks() { |
| 64 | self::$initiated = true; |
| 65 | |
| 66 | add_action( 'wp_insert_comment', array( 'Akismet', 'auto_check_update_meta' ), 10, 2 ); |
| 67 | add_filter( 'preprocess_comment', array( 'Akismet', 'auto_check_comment' ), 1 ); |
| 68 | add_filter( 'rest_pre_insert_comment', array( 'Akismet', 'rest_auto_check_comment' ), 1 ); |
| 69 | |
| 70 | add_action( 'comment_form', array( 'Akismet', 'load_form_js' ) ); |
| 71 | add_action( 'do_shortcode_tag', array( 'Akismet', 'load_form_js_via_filter' ), 10, 4 ); |
| 72 | |
| 73 | add_action( 'akismet_scheduled_delete', array( 'Akismet', 'delete_old_comments' ) ); |
| 74 | add_action( 'akismet_scheduled_delete', array( 'Akismet', 'delete_old_comments_meta' ) ); |
| 75 | add_action( 'akismet_scheduled_delete', array( 'Akismet', 'delete_orphaned_commentmeta' ) ); |
| 76 | add_action( 'akismet_schedule_cron_recheck', array( 'Akismet', 'cron_recheck' ) ); |
| 77 | |
| 78 | add_action( 'comment_form', array( 'Akismet', 'add_comment_nonce' ), 1 ); |
| 79 | add_action( 'comment_form', array( 'Akismet', 'output_custom_form_fields' ) ); |
| 80 | add_filter( 'script_loader_tag', array( 'Akismet', 'set_form_js_async' ), 10, 3 ); |
| 81 | |
| 82 | add_filter( 'comment_moderation_recipients', array( 'Akismet', 'disable_moderation_emails_if_unreachable' ), 1000, 2 ); |
| 83 | add_filter( 'pre_comment_approved', array( 'Akismet', 'last_comment_status' ), 10, 2 ); |
| 84 | |
| 85 | add_action( 'transition_comment_status', array( 'Akismet', 'transition_comment_status' ), 10, 3 ); |
| 86 | |
| 87 | // Run this early in the pingback call, before doing a remote fetch of the source uri |
| 88 | add_action( 'xmlrpc_call', array( 'Akismet', 'pre_check_pingback' ), 10, 3 ); |
| 89 | |
| 90 | // Jetpack compatibility |
| 91 | add_filter( 'jetpack_options_whitelist', array( 'Akismet', 'add_to_jetpack_options_whitelist' ) ); |
| 92 | add_filter( 'jetpack_contact_form_html', array( 'Akismet', 'inject_custom_form_fields' ) ); |
| 93 | add_filter( 'jetpack_contact_form_akismet_values', array( 'Akismet', 'prepare_custom_form_values' ) ); |
| 94 | |
| 95 | // Gravity Forms |
| 96 | add_filter( 'gform_get_form_filter', array( 'Akismet', 'inject_custom_form_fields' ) ); |
| 97 | add_filter( 'gform_akismet_fields', array( 'Akismet', 'prepare_custom_form_values' ) ); |
| 98 | |
| 99 | // Contact Form 7 |
| 100 | add_filter( 'wpcf7_form_elements', array( 'Akismet', 'append_custom_form_fields' ) ); |
| 101 | add_filter( 'wpcf7_akismet_parameters', array( 'Akismet', 'prepare_custom_form_values' ) ); |
| 102 | |
| 103 | // Formidable Forms |
| 104 | add_filter( 'frm_filter_final_form', array( 'Akismet', 'inject_custom_form_fields' ) ); |
| 105 | add_filter( 'frm_akismet_values', array( 'Akismet', 'prepare_custom_form_values' ) ); |
| 106 | |
| 107 | // Fluent Forms |
| 108 | /* |
| 109 | * The Fluent Forms hook names were updated in version 5.0.0. The last version that supported |
| 110 | * the original hook names was 4.3.25, and version 4.3.25 was tested up to WordPress version 6.1. |
| 111 | * |
| 112 | * The legacy hooks are fired before the new hooks. See |
| 113 | * https://github.com/fluentform/fluentform/commit/cc45341afcae400f217470a7bbfb15efdd80454f |
| 114 | * |
| 115 | * The legacy Fluent Forms hooks will be removed when Akismet no longer supports WordPress version 6.1. |
| 116 | * This will provide compatibility with previous versions of Fluent Forms for a reasonable amount of time. |
| 117 | */ |
| 118 | add_filter( 'fluentform_form_element_start', array( 'Akismet', 'output_custom_form_fields' ) ); |
| 119 | add_filter( 'fluentform_akismet_fields', array( 'Akismet', 'prepare_custom_form_values' ), 10, 2 ); |
| 120 | // Current Fluent Form hooks. |
| 121 | add_filter( 'fluentform/form_element_start', array( 'Akismet', 'output_custom_form_fields' ) ); |
| 122 | add_filter( 'fluentform/akismet_fields', array( 'Akismet', 'prepare_custom_form_values' ), 10, 2 ); |
| 123 | |
| 124 | add_action( 'update_option_wordpress_api_key', array( 'Akismet', 'updated_option' ), 10, 2 ); |
| 125 | add_action( 'add_option_wordpress_api_key', array( 'Akismet', 'added_option' ), 10, 2 ); |
| 126 | |
| 127 | add_action( 'comment_form_after', array( 'Akismet', 'display_comment_form_privacy_notice' ) ); |
| 128 | } |
| 129 | |
| 130 | public static function get_api_key() { |
| 131 | return apply_filters( 'akismet_get_api_key', defined( 'WPCOM_API_KEY' ) ? constant( 'WPCOM_API_KEY' ) : get_option( 'wordpress_api_key' ) ); |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * Exchange the API key for a token that can only be used to access stats pages. |
| 136 | * |
| 137 | * @return string |
| 138 | */ |
| 139 | public static function get_access_token() { |
| 140 | static $access_token = null; |
| 141 | |
| 142 | if ( is_null( $access_token ) ) { |
| 143 | $request_args = array( 'api_key' => self::get_api_key() ); |
| 144 | |
| 145 | $request_args = apply_filters( 'akismet_request_args', $request_args, 'token' ); |
| 146 | |
| 147 | $response = self::http_post( self::build_query( $request_args ), 'token' ); |
| 148 | |
| 149 | $access_token = $response[1]; |
| 150 | } |
| 151 | |
| 152 | return $access_token; |
| 153 | } |
| 154 | |
| 155 | public static function check_key_status( $key, $ip = null ) { |
| 156 | $request_args = array( |
| 157 | 'key' => $key, |
| 158 | 'blog' => get_option( 'home' ), |
| 159 | ); |
| 160 | |
| 161 | $request_args = apply_filters( 'akismet_request_args', $request_args, 'verify-key' ); |
| 162 | |
| 163 | return self::http_post( self::build_query( $request_args ), 'verify-key', $ip ); |
| 164 | } |
| 165 | |
| 166 | public static function verify_key( $key, $ip = null ) { |
| 167 | // Shortcut for obviously invalid keys. |
| 168 | if ( strlen( $key ) != 12 ) { |
| 169 | return 'invalid'; |
| 170 | } |
| 171 | |
| 172 | $response = self::check_key_status( $key, $ip ); |
| 173 | |
| 174 | if ( $response[1] != 'valid' && $response[1] != 'invalid' ) { |
| 175 | return 'failed'; |
| 176 | } |
| 177 | |
| 178 | return $response[1]; |
| 179 | } |
| 180 | |
| 181 | public static function deactivate_key( $key ) { |
| 182 | $request_args = array( |
| 183 | 'key' => $key, |
| 184 | 'blog' => get_option( 'home' ), |
| 185 | ); |
| 186 | |
| 187 | $request_args = apply_filters( 'akismet_request_args', $request_args, 'deactivate' ); |
| 188 | |
| 189 | $response = self::http_post( self::build_query( $request_args ), 'deactivate' ); |
| 190 | |
| 191 | if ( $response[1] != 'deactivated' ) { |
| 192 | return 'failed'; |
| 193 | } |
| 194 | |
| 195 | return $response[1]; |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | * Add the akismet option to the Jetpack options management whitelist. |
| 200 | * |
| 201 | * @param array $options The list of whitelisted option names. |
| 202 | * @return array The updated whitelist |
| 203 | */ |
| 204 | public static function add_to_jetpack_options_whitelist( $options ) { |
| 205 | $options[] = 'wordpress_api_key'; |
| 206 | return $options; |
| 207 | } |
| 208 | |
| 209 | /** |
| 210 | * When the akismet option is updated, run the registration call. |
| 211 | * |
| 212 | * This should only be run when the option is updated from the Jetpack/WP.com |
| 213 | * API call, and only if the new key is different than the old key. |
| 214 | * |
| 215 | * @param mixed $old_value The old option value. |
| 216 | * @param mixed $value The new option value. |
| 217 | */ |
| 218 | public static function updated_option( $old_value, $value ) { |
| 219 | // Not an API call |
| 220 | if ( ! class_exists( 'WPCOM_JSON_API_Update_Option_Endpoint' ) ) { |
| 221 | return; |
| 222 | } |
| 223 | // Only run the registration if the old key is different. |
| 224 | if ( $old_value !== $value ) { |
| 225 | self::verify_key( $value ); |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | /** |
| 230 | * Treat the creation of an API key the same as updating the API key to a new value. |
| 231 | * |
| 232 | * @param mixed $option_name Will always be "wordpress_api_key", until something else hooks in here. |
| 233 | * @param mixed $value The option value. |
| 234 | */ |
| 235 | public static function added_option( $option_name, $value ) { |
| 236 | if ( 'wordpress_api_key' === $option_name ) { |
| 237 | return self::updated_option( '', $value ); |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | public static function rest_auto_check_comment( $commentdata ) { |
| 242 | return self::auto_check_comment( $commentdata, 'rest_api' ); |
| 243 | } |
| 244 | |
| 245 | /** |
| 246 | * Check a comment for spam. |
| 247 | * |
| 248 | * @param array $commentdata |
| 249 | * @param string $context What kind of request triggered this comment check? Possible values are 'default', 'rest_api', and 'xml-rpc'. |
| 250 | * @return array|WP_Error Either the $commentdata array with additional entries related to its spam status |
| 251 | * or a WP_Error, if it's a REST API request and the comment should be discarded. |
| 252 | */ |
| 253 | public static function auto_check_comment( $commentdata, $context = 'default' ) { |
| 254 | // If no key is configured, then there's no point in doing any of this. |
| 255 | if ( ! self::get_api_key() ) { |
| 256 | return $commentdata; |
| 257 | } |
| 258 | |
| 259 | self::$last_comment_result = null; |
| 260 | |
| 261 | // Skip the Akismet check if the comment matches the Disallowed Keys list. |
| 262 | if ( function_exists( 'wp_check_comment_disallowed_list' ) ) { |
| 263 | $comment_author = isset( $commentdata['comment_author'] ) ? $commentdata['comment_author'] : ''; |
| 264 | $comment_author_email = isset( $commentdata['comment_author_email'] ) ? $commentdata['comment_author_email'] : ''; |
| 265 | $comment_author_url = isset( $commentdata['comment_author_url'] ) ? $commentdata['comment_author_url'] : ''; |
| 266 | $comment_content = isset( $commentdata['comment_content'] ) ? $commentdata['comment_content'] : ''; |
| 267 | $comment_author_ip = isset( $commentdata['comment_author_IP'] ) ? $commentdata['comment_author_IP'] : ''; |
| 268 | $comment_agent = isset( $commentdata['comment_agent'] ) ? $commentdata['comment_agent'] : ''; |
| 269 | |
| 270 | if ( wp_check_comment_disallowed_list( $comment_author, $comment_author_email, $comment_author_url, $comment_content, $comment_author_ip, $comment_agent ) ) { |
| 271 | self::set_last_comment( $commentdata ); |
| 272 | return $commentdata; |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | $comment = $commentdata; |
| 277 | |
| 278 | $comment['user_ip'] = self::get_ip_address(); |
| 279 | $comment['user_agent'] = self::get_user_agent(); |
| 280 | $comment['referrer'] = self::get_referer(); |
| 281 | $comment['blog'] = get_option( 'home' ); |
| 282 | $comment['blog_lang'] = get_locale(); |
| 283 | $comment['blog_charset'] = get_option( 'blog_charset' ); |
| 284 | $comment['permalink'] = get_permalink( $comment['comment_post_ID'] ); |
| 285 | |
| 286 | if ( ! empty( $comment['user_ID'] ) ) { |
| 287 | $comment['user_role'] = self::get_user_roles( $comment['user_ID'] ); |
| 288 | } |
| 289 | |
| 290 | /** See filter documentation in init_hooks(). */ |
| 291 | $akismet_nonce_option = apply_filters( 'akismet_comment_nonce', get_option( 'akismet_comment_nonce' ) ); |
| 292 | $comment['akismet_comment_nonce'] = 'inactive'; |
| 293 | if ( $akismet_nonce_option == 'true' || $akismet_nonce_option == '' ) { |
| 294 | $comment['akismet_comment_nonce'] = 'failed'; |
| 295 | if ( isset( $_POST['akismet_comment_nonce'] ) && wp_verify_nonce( $_POST['akismet_comment_nonce'], 'akismet_comment_nonce_' . $comment['comment_post_ID'] ) ) { |
| 296 | $comment['akismet_comment_nonce'] = 'passed'; |
| 297 | } |
| 298 | |
| 299 | // comment reply in wp-admin |
| 300 | if ( isset( $_POST['_ajax_nonce-replyto-comment'] ) && check_ajax_referer( 'replyto-comment', '_ajax_nonce-replyto-comment' ) ) { |
| 301 | $comment['akismet_comment_nonce'] = 'passed'; |
| 302 | } |
| 303 | } |
| 304 | |
| 305 | if ( self::is_test_mode() ) { |
| 306 | $comment['is_test'] = 'true'; |
| 307 | } |
| 308 | |
| 309 | foreach ( $_POST as $key => $value ) { |
| 310 | if ( is_string( $value ) ) { |
| 311 | $comment[ "POST_{$key}" ] = $value; |
| 312 | } |
| 313 | } |
| 314 | |
| 315 | foreach ( $_SERVER as $key => $value ) { |
| 316 | if ( ! is_string( $value ) ) { |
| 317 | continue; |
| 318 | } |
| 319 | |
| 320 | if ( preg_match( '/^HTTP_COOKIE/', $key ) ) { |
| 321 | continue; |
| 322 | } |
| 323 | |
| 324 | // Send any potentially useful $_SERVER vars, but avoid sending junk we don't need. |
| 325 | if ( preg_match( '/^(HTTP_|REMOTE_ADDR|REQUEST_URI|DOCUMENT_URI)/', $key ) ) { |
| 326 | $comment[ "$key" ] = $value; |
| 327 | } |
| 328 | } |
| 329 | |
| 330 | $post = get_post( $comment['comment_post_ID'] ); |
| 331 | |
| 332 | if ( ! is_null( $post ) ) { |
| 333 | // $post can technically be null, although in the past, it's always been an indicator of another plugin interfering. |
| 334 | $comment['comment_post_modified_gmt'] = $post->post_modified_gmt; |
| 335 | |
| 336 | // Tags and categories are important context in which to consider the comment. |
| 337 | $comment['comment_context'] = array(); |
| 338 | |
| 339 | $tag_names = wp_get_post_tags( $post->ID, array( 'fields' => 'names' ) ); |
| 340 | |
| 341 | if ( $tag_names && ! is_wp_error( $tag_names ) ) { |
| 342 | foreach ( $tag_names as $tag_name ) { |
| 343 | $comment['comment_context'][] = $tag_name; |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | $category_names = wp_get_post_categories( $post->ID, array( 'fields' => 'names' ) ); |
| 348 | |
| 349 | if ( $category_names && ! is_wp_error( $category_names ) ) { |
| 350 | foreach ( $category_names as $category_name ) { |
| 351 | $comment['comment_context'][] = $category_name; |
| 352 | } |
| 353 | } |
| 354 | } |
| 355 | |
| 356 | /** |
| 357 | * Filter the data that is used to generate the request body for the API call. |
| 358 | * |
| 359 | * @since 5.3.1 |
| 360 | * |
| 361 | * @param array $comment An array of request data. |
| 362 | * @param string $endpoint The API endpoint being requested. |
| 363 | */ |
| 364 | $comment = apply_filters( 'akismet_request_args', $comment, 'comment-check' ); |
| 365 | |
| 366 | $response = self::http_post( self::build_query( $comment ), 'comment-check' ); |
| 367 | |
| 368 | do_action( 'akismet_comment_check_response', $response ); |
| 369 | |
| 370 | $commentdata['comment_as_submitted'] = array_intersect_key( $comment, self::$comment_as_submitted_allowed_keys ); |
| 371 | |
| 372 | // Also include any form fields we inject into the comment form, like ak_js |
| 373 | foreach ( $_POST as $key => $value ) { |
| 374 | if ( is_string( $value ) && strpos( $key, 'ak_' ) === 0 ) { |
| 375 | $commentdata['comment_as_submitted'][ 'POST_' . $key ] = $value; |
| 376 | } |
| 377 | } |
| 378 | |
| 379 | $commentdata['akismet_result'] = $response[1]; |
| 380 | |
| 381 | if ( isset( $response[0]['x-akismet-pro-tip'] ) ) { |
| 382 | $commentdata['akismet_pro_tip'] = $response[0]['x-akismet-pro-tip']; |
| 383 | } |
| 384 | |
| 385 | if ( isset( $response[0]['x-akismet-guid'] ) ) { |
| 386 | $commentdata['akismet_guid'] = $response[0]['x-akismet-guid']; |
| 387 | } |
| 388 | |
| 389 | if ( isset( $response[0]['x-akismet-error'] ) ) { |
| 390 | // An error occurred that we anticipated (like a suspended key) and want the user to act on. |
| 391 | // Send to moderation. |
| 392 | self::$last_comment_result = '0'; |
| 393 | } elseif ( 'true' == $response[1] ) { |
| 394 | // akismet_spam_count will be incremented later by comment_is_spam() |
| 395 | self::$last_comment_result = 'spam'; |
| 396 | |
| 397 | $discard = ( isset( $commentdata['akismet_pro_tip'] ) && $commentdata['akismet_pro_tip'] === 'discard' && self::allow_discard() ); |
| 398 | |
| 399 | do_action( 'akismet_spam_caught', $discard ); |
| 400 | |
| 401 | if ( $discard ) { |
| 402 | // The spam is obvious, so we're bailing out early. |
| 403 | // akismet_result_spam() won't be called so bump the counter here |
| 404 | if ( $incr = apply_filters( 'akismet_spam_count_incr', 1 ) ) { |
| 405 | update_option( 'akismet_spam_count', get_option( 'akismet_spam_count' ) + $incr ); |
| 406 | } |
| 407 | |
| 408 | if ( 'rest_api' === $context ) { |
| 409 | return new WP_Error( 'akismet_rest_comment_discarded', __( 'Comment discarded.', 'akismet' ) ); |
| 410 | } elseif ( 'xml-rpc' === $context ) { |
| 411 | // If this is a pingback that we're pre-checking, the discard behavior is the same as the normal spam response behavior. |
| 412 | return $commentdata; |
| 413 | } else { |
| 414 | // Redirect back to the previous page, or failing that, the post permalink, or failing that, the homepage of the blog. |
| 415 | $redirect_to = isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : ( $post ? get_permalink( $post ) : home_url() ); |
| 416 | wp_safe_redirect( esc_url_raw( $redirect_to ) ); |
| 417 | die(); |
| 418 | } |
| 419 | } elseif ( 'rest_api' === $context ) { |
| 420 | // The way the REST API structures its calls, we can set the comment_approved value right away. |
| 421 | $commentdata['comment_approved'] = 'spam'; |
| 422 | } |
| 423 | } |
| 424 | |
| 425 | // if the response is neither true nor false, hold the comment for moderation and schedule a recheck |
| 426 | if ( 'true' != $response[1] && 'false' != $response[1] ) { |
| 427 | if ( ! current_user_can( 'moderate_comments' ) ) { |
| 428 | // Comment status should be moderated |
| 429 | self::$last_comment_result = '0'; |
| 430 | } |
| 431 | |
| 432 | if ( ! wp_next_scheduled( 'akismet_schedule_cron_recheck' ) ) { |
| 433 | wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' ); |
| 434 | do_action( 'akismet_scheduled_recheck', 'invalid-response-' . $response[1] ); |
| 435 | } |
| 436 | |
| 437 | self::$prevent_moderation_email_for_these_comments[] = $commentdata; |
| 438 | } |
| 439 | |
| 440 | // Delete old comments daily |
| 441 | if ( ! wp_next_scheduled( 'akismet_scheduled_delete' ) ) { |
| 442 | wp_schedule_event( time(), 'daily', 'akismet_scheduled_delete' ); |
| 443 | } |
| 444 | |
| 445 | self::set_last_comment( $commentdata ); |
| 446 | self::fix_scheduled_recheck(); |
| 447 | |
| 448 | return $commentdata; |
| 449 | } |
| 450 | |
| 451 | public static function get_last_comment() { |
| 452 | return self::$last_comment; |
| 453 | } |
| 454 | |
| 455 | public static function set_last_comment( $comment ) { |
| 456 | if ( is_null( $comment ) ) { |
| 457 | self::$last_comment = null; |
| 458 | } else { |
| 459 | // We filter it here so that it matches the filtered comment data that we'll have to compare against later. |
| 460 | // wp_filter_comment expects comment_author_IP |
| 461 | self::$last_comment = wp_filter_comment( |
| 462 | array_merge( |
| 463 | array( 'comment_author_IP' => self::get_ip_address() ), |
| 464 | $comment |
| 465 | ) |
| 466 | ); |
| 467 | } |
| 468 | } |
| 469 | |
| 470 | // this fires on wp_insert_comment. we can't update comment_meta when auto_check_comment() runs |
| 471 | // because we don't know the comment ID at that point. |
| 472 | public static function auto_check_update_meta( $id, $comment ) { |
| 473 | // wp_insert_comment() might be called in other contexts, so make sure this is the same comment |
| 474 | // as was checked by auto_check_comment |
| 475 | if ( is_object( $comment ) && ! empty( self::$last_comment ) && is_array( self::$last_comment ) ) { |
| 476 | if ( self::matches_last_comment( $comment ) ) { |
| 477 | load_plugin_textdomain( 'akismet' ); |
| 478 | |
| 479 | // normal result: true or false |
| 480 | if ( isset( self::$last_comment['akismet_result'] ) && self::$last_comment['akismet_result'] == 'true' ) { |
| 481 | update_comment_meta( $comment->comment_ID, 'akismet_result', 'true' ); |
| 482 | self::update_comment_history( $comment->comment_ID, '', 'check-spam' ); |
| 483 | if ( $comment->comment_approved != 'spam' ) { |
| 484 | self::update_comment_history( |
| 485 | $comment->comment_ID, |
| 486 | '', |
| 487 | 'status-changed-' . $comment->comment_approved |
| 488 | ); |
| 489 | } |
| 490 | } elseif ( isset( self::$last_comment['akismet_result'] ) && self::$last_comment['akismet_result'] == 'false' ) { |
| 491 | update_comment_meta( $comment->comment_ID, 'akismet_result', 'false' ); |
| 492 | self::update_comment_history( $comment->comment_ID, '', 'check-ham' ); |
| 493 | // Status could be spam or trash, depending on the WP version and whether this change applies: |
| 494 | // https://core.trac.wordpress.org/changeset/34726 |
| 495 | if ( $comment->comment_approved == 'spam' || $comment->comment_approved == 'trash' ) { |
| 496 | if ( function_exists( 'wp_check_comment_disallowed_list' ) ) { |
| 497 | if ( wp_check_comment_disallowed_list( $comment->comment_author, $comment->comment_author_email, $comment->comment_author_url, $comment->comment_content, $comment->comment_author_IP, $comment->comment_agent ) ) { |
| 498 | self::update_comment_history( $comment->comment_ID, '', 'wp-disallowed' ); |
| 499 | } else { |
| 500 | self::update_comment_history( $comment->comment_ID, '', 'status-changed-' . $comment->comment_approved ); |
| 501 | } |
| 502 | } else { |
| 503 | self::update_comment_history( $comment->comment_ID, '', 'status-changed-' . $comment->comment_approved ); |
| 504 | } |
| 505 | } |
| 506 | } elseif ( ! isset( self::$last_comment['akismet_result'] ) ) { |
| 507 | // akismet_result isn't set, so the comment wasn't sent to Akismet. |
| 508 | update_comment_meta( $comment->comment_ID, 'akismet_skipped', 'true' ); |
| 509 | $caught_by_disallowed_list = false; |
| 510 | |
| 511 | if ( function_exists( 'wp_check_comment_disallowed_list' ) ) { |
| 512 | $caught_by_disallowed_list = wp_check_comment_disallowed_list( $comment->comment_author, $comment->comment_author_email, $comment->comment_author_url, $comment->comment_content, $comment->comment_author_IP, $comment->comment_agent ); |
| 513 | } |
| 514 | |
| 515 | if ( $caught_by_disallowed_list ) { |
| 516 | self::update_comment_history( $comment->comment_ID, '', 'wp-disallowed' ); |
| 517 | self::update_comment_history( $comment->comment_ID, '', 'akismet-skipped-disallowed' ); |
| 518 | } else { |
| 519 | // Add a generic skipped history item. |
| 520 | self::update_comment_history( $comment->comment_ID, '', 'akismet-skipped' ); |
| 521 | } |
| 522 | } else { |
| 523 | // abnormal result: error |
| 524 | update_comment_meta( $comment->comment_ID, 'akismet_error', time() ); |
| 525 | self::update_comment_history( |
| 526 | $comment->comment_ID, |
| 527 | '', |
| 528 | 'check-error', |
| 529 | array( 'response' => substr( self::$last_comment['akismet_result'], 0, 50 ) ) |
| 530 | ); |
| 531 | } |
| 532 | |
| 533 | // record the complete original data as submitted for checking |
| 534 | if ( isset( self::$last_comment['comment_as_submitted'] ) ) { |
| 535 | update_comment_meta( $comment->comment_ID, 'akismet_as_submitted', self::$last_comment['comment_as_submitted'] ); |
| 536 | } |
| 537 | |
| 538 | if ( isset( self::$last_comment['akismet_pro_tip'] ) ) { |
| 539 | update_comment_meta( $comment->comment_ID, 'akismet_pro_tip', self::$last_comment['akismet_pro_tip'] ); |
| 540 | } |
| 541 | |
| 542 | if ( isset( self::$last_comment['akismet_guid'] ) ) { |
| 543 | update_comment_meta( $comment->comment_ID, 'akismet_guid', self::$last_comment['akismet_guid'] ); |
| 544 | } |
| 545 | } |
| 546 | } |
| 547 | } |
| 548 | |
| 549 | public static function delete_old_comments() { |
| 550 | global $wpdb; |
| 551 | |
| 552 | /** |
| 553 | * Determines how many comments will be deleted in each batch. |
| 554 | * |
| 555 | * @param int The default, as defined by AKISMET_DELETE_LIMIT. |
| 556 | */ |
| 557 | $delete_limit = apply_filters( 'akismet_delete_comment_limit', defined( 'AKISMET_DELETE_LIMIT' ) ? AKISMET_DELETE_LIMIT : 10000 ); |
| 558 | $delete_limit = max( 1, intval( $delete_limit ) ); |
| 559 | |
| 560 | /** |
| 561 | * Determines how many days a comment will be left in the Spam queue before being deleted. |
| 562 | * |
| 563 | * @param int The default number of days. |
| 564 | */ |
| 565 | $delete_interval = apply_filters( 'akismet_delete_comment_interval', 15 ); |
| 566 | $delete_interval = max( 1, intval( $delete_interval ) ); |
| 567 | |
| 568 | 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 ) ) ) { |
| 569 | if ( empty( $comment_ids ) ) { |
| 570 | return; |
| 571 | } |
| 572 | |
| 573 | $wpdb->queries = array(); |
| 574 | |
| 575 | $comments = array(); |
| 576 | |
| 577 | foreach ( $comment_ids as $comment_id ) { |
| 578 | $comments[ $comment_id ] = get_comment( $comment_id ); |
| 579 | |
| 580 | do_action( 'delete_comment', $comment_id, $comments[ $comment_id ] ); |
| 581 | do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
| 582 | } |
| 583 | |
| 584 | // Prepared as strings since comment_id is an unsigned BIGINT, and using %d will constrain the value to the maximum signed BIGINT. |
| 585 | $format_string = implode( ', ', array_fill( 0, is_countable( $comment_ids ) ? count( $comment_ids ) : 0, '%s' ) ); |
| 586 | |
| 587 | $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->comments} WHERE comment_id IN ( " . $format_string . ' )', $comment_ids ) ); |
| 588 | $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->commentmeta} WHERE comment_id IN ( " . $format_string . ' )', $comment_ids ) ); |
| 589 | |
| 590 | foreach ( $comment_ids as $comment_id ) { |
| 591 | do_action( 'deleted_comment', $comment_id, $comments[ $comment_id ] ); |
| 592 | unset( $comments[ $comment_id ] ); |
| 593 | } |
| 594 | |
| 595 | clean_comment_cache( $comment_ids ); |
| 596 | do_action( 'akismet_delete_comment_batch', is_countable( $comment_ids ) ? count( $comment_ids ) : 0 ); |
| 597 | } |
| 598 | |
| 599 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand( 1, 5000 ) == 11 ), $wpdb->comments ) ) { // lucky number |
| 600 | $wpdb->query( "OPTIMIZE TABLE {$wpdb->comments}" ); |
| 601 | } |
| 602 | } |
| 603 | |
| 604 | public static function delete_old_comments_meta() { |
| 605 | global $wpdb; |
| 606 | |
| 607 | $interval = apply_filters( 'akismet_delete_commentmeta_interval', 15 ); |
| 608 | |
| 609 | // enforce a minimum of 1 day |
| 610 | $interval = absint( $interval ); |
| 611 | if ( $interval < 1 ) { |
| 612 | $interval = 1; |
| 613 | } |
| 614 | |
| 615 | // akismet_as_submitted meta values are large, so expire them |
| 616 | // after $interval days regardless of the comment status |
| 617 | 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 ) ) ) { |
| 618 | if ( empty( $comment_ids ) ) { |
| 619 | return; |
| 620 | } |
| 621 | |
| 622 | $wpdb->queries = array(); |
| 623 | |
| 624 | foreach ( $comment_ids as $comment_id ) { |
| 625 | delete_comment_meta( $comment_id, 'akismet_as_submitted' ); |
| 626 | do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
| 627 | } |
| 628 | |
| 629 | do_action( 'akismet_delete_commentmeta_batch', is_countable( $comment_ids ) ? count( $comment_ids ) : 0 ); |
| 630 | } |
| 631 | |
| 632 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand( 1, 5000 ) == 11 ), $wpdb->commentmeta ) ) { // lucky number |
| 633 | $wpdb->query( "OPTIMIZE TABLE {$wpdb->commentmeta}" ); |
| 634 | } |
| 635 | } |
| 636 | |
| 637 | // Clear out comments meta that no longer have corresponding comments in the database |
| 638 | public static function delete_orphaned_commentmeta() { |
| 639 | global $wpdb; |
| 640 | |
| 641 | $last_meta_id = 0; |
| 642 | $start_time = isset( $_SERVER['REQUEST_TIME_FLOAT'] ) ? $_SERVER['REQUEST_TIME_FLOAT'] : microtime( true ); |
| 643 | $max_exec_time = max( ini_get( 'max_execution_time' ) - 5, 3 ); |
| 644 | |
| 645 | while ( $commentmeta_results = $wpdb->get_results( $wpdb->prepare( "SELECT m.meta_id, m.comment_id, m.meta_key FROM {$wpdb->commentmeta} as m LEFT JOIN {$wpdb->comments} as c USING(comment_id) WHERE c.comment_id IS NULL AND m.meta_id > %d ORDER BY m.meta_id LIMIT 1000", $last_meta_id ) ) ) { |
| 646 | if ( empty( $commentmeta_results ) ) { |
| 647 | return; |
| 648 | } |
| 649 | |
| 650 | $wpdb->queries = array(); |
| 651 | |
| 652 | $commentmeta_deleted = 0; |
| 653 | |
| 654 | foreach ( $commentmeta_results as $commentmeta ) { |
| 655 | if ( 'akismet_' == substr( $commentmeta->meta_key, 0, 8 ) ) { |
| 656 | delete_comment_meta( $commentmeta->comment_id, $commentmeta->meta_key ); |
| 657 | do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
| 658 | ++$commentmeta_deleted; |
| 659 | } |
| 660 | |
| 661 | $last_meta_id = $commentmeta->meta_id; |
| 662 | } |
| 663 | |
| 664 | do_action( 'akismet_delete_commentmeta_batch', $commentmeta_deleted ); |
| 665 | |
| 666 | // If we're getting close to max_execution_time, quit for this round. |
| 667 | if ( microtime( true ) - $start_time > $max_exec_time ) { |
| 668 | return; |
| 669 | } |
| 670 | } |
| 671 | |
| 672 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand( 1, 5000 ) == 11 ), $wpdb->commentmeta ) ) { // lucky number |
| 673 | $wpdb->query( "OPTIMIZE TABLE {$wpdb->commentmeta}" ); |
| 674 | } |
| 675 | } |
| 676 | |
| 677 | // how many approved comments does this author have? |
| 678 | public static function get_user_comments_approved( $user_id, $comment_author_email, $comment_author, $comment_author_url ) { |
| 679 | global $wpdb; |
| 680 | |
| 681 | /** |
| 682 | * Which comment types should be ignored when counting a user's approved comments? |
| 683 | * |
| 684 | * Some plugins add entries to the comments table that are not actual |
| 685 | * comments that could have been checked by Akismet. Allow these comments |
| 686 | * to be excluded from the "approved comment count" query in order to |
| 687 | * avoid artificially inflating the approved comment count. |
| 688 | * |
| 689 | * @param array $comment_types An array of comment types that won't be considered |
| 690 | * when counting a user's approved comments. |
| 691 | * |
| 692 | * @since 4.2.2 |
| 693 | */ |
| 694 | $excluded_comment_types = apply_filters( 'akismet_excluded_comment_types', array() ); |
| 695 | |
| 696 | $comment_type_where = ''; |
| 697 | |
| 698 | if ( is_array( $excluded_comment_types ) && ! empty( $excluded_comment_types ) ) { |
| 699 | $excluded_comment_types = array_unique( $excluded_comment_types ); |
| 700 | |
| 701 | foreach ( $excluded_comment_types as $excluded_comment_type ) { |
| 702 | $comment_type_where .= $wpdb->prepare( ' AND comment_type <> %s ', $excluded_comment_type ); |
| 703 | } |
| 704 | } |
| 705 | |
| 706 | if ( ! empty( $user_id ) ) { |
| 707 | return (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM {$wpdb->comments} WHERE user_id = %d AND comment_approved = 1" . $comment_type_where, $user_id ) ); |
| 708 | } |
| 709 | |
| 710 | if ( ! empty( $comment_author_email ) ) { |
| 711 | 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_type_where, $comment_author_email, $comment_author, $comment_author_url ) ); |
| 712 | } |
| 713 | |
| 714 | return 0; |
| 715 | } |
| 716 | |
| 717 | /** |
| 718 | * Get the full comment history for a given comment, as an array in reverse chronological order. |
| 719 | * Each entry will have an 'event', a 'time', and possible a 'message' member (if the entry is old enough). |
| 720 | * Some entries will also have a 'user' or 'meta' member. |
| 721 | * |
| 722 | * @param int $comment_id The relevant comment ID. |
| 723 | * @return array|bool An array of history events, or false if there is no history. |
| 724 | */ |
| 725 | public static function get_comment_history( $comment_id ) { |
| 726 | $history = get_comment_meta( $comment_id, 'akismet_history', false ); |
| 727 | if ( empty( $history ) || empty( $history[0] ) ) { |
| 728 | return false; |
| 729 | } |
| 730 | |
| 731 | /* |
| 732 | // To see all variants when testing. |
| 733 | $history[] = array( 'time' => 445856401, 'message' => 'Old versions of Akismet stored the message as a literal string in the commentmeta.', 'event' => null ); |
| 734 | $history[] = array( 'time' => 445856402, 'event' => 'recheck-spam' ); |
| 735 | $history[] = array( 'time' => 445856403, 'event' => 'check-spam' ); |
| 736 | $history[] = array( 'time' => 445856404, 'event' => 'recheck-ham' ); |
| 737 | $history[] = array( 'time' => 445856405, 'event' => 'check-ham' ); |
| 738 | $history[] = array( 'time' => 445856406, 'event' => 'wp-blacklisted' ); |
| 739 | $history[] = array( 'time' => 445856406, 'event' => 'wp-disallowed' ); |
| 740 | $history[] = array( 'time' => 445856407, 'event' => 'report-spam' ); |
| 741 | $history[] = array( 'time' => 445856408, 'event' => 'report-spam', 'user' => 'sam' ); |
| 742 | $history[] = array( 'message' => 'sam reported this comment as spam (hardcoded message).', 'time' => 445856400, 'event' => 'report-spam', 'user' => 'sam' ); |
| 743 | $history[] = array( 'time' => 445856409, 'event' => 'report-ham', 'user' => 'sam' ); |
| 744 | $history[] = array( 'message' => 'sam reported this comment as ham (hardcoded message).', 'time' => 445856400, 'event' => 'report-ham', 'user' => 'sam' ); // |
| 745 | $history[] = array( 'time' => 445856410, 'event' => 'cron-retry-spam' ); |
| 746 | $history[] = array( 'time' => 445856411, 'event' => 'cron-retry-ham' ); |
| 747 | $history[] = array( 'time' => 445856412, 'event' => 'check-error' ); // |
| 748 | $history[] = array( 'time' => 445856413, 'event' => 'check-error', 'meta' => array( 'response' => 'The server was taking a nap.' ) ); |
| 749 | $history[] = array( 'time' => 445856414, 'event' => 'recheck-error' ); // Should not generate a message. |
| 750 | $history[] = array( 'time' => 445856415, 'event' => 'recheck-error', 'meta' => array( 'response' => 'The server was taking a nap.' ) ); |
| 751 | $history[] = array( 'time' => 445856416, 'event' => 'status-changedtrash' ); |
| 752 | $history[] = array( 'time' => 445856417, 'event' => 'status-changedspam' ); |
| 753 | $history[] = array( 'time' => 445856418, 'event' => 'status-changedhold' ); |
| 754 | $history[] = array( 'time' => 445856419, 'event' => 'status-changedapprove' ); |
| 755 | $history[] = array( 'time' => 445856420, 'event' => 'status-changed-trash' ); |
| 756 | $history[] = array( 'time' => 445856421, 'event' => 'status-changed-spam' ); |
| 757 | $history[] = array( 'time' => 445856422, 'event' => 'status-changed-hold' ); |
| 758 | $history[] = array( 'time' => 445856423, 'event' => 'status-changed-approve' ); |
| 759 | $history[] = array( 'time' => 445856424, 'event' => 'status-trash', 'user' => 'sam' ); |
| 760 | $history[] = array( 'time' => 445856425, 'event' => 'status-spam', 'user' => 'sam' ); |
| 761 | $history[] = array( 'time' => 445856426, 'event' => 'status-hold', 'user' => 'sam' ); |
| 762 | $history[] = array( 'time' => 445856427, 'event' => 'status-approve', 'user' => 'sam' ); |
| 763 | $history[] = array( 'time' => 445856427, 'event' => 'webhook-spam' ); |
| 764 | $history[] = array( 'time' => 445856427, 'event' => 'webhook-ham' ); |
| 765 | $history[] = array( 'time' => 445856427, 'event' => 'webhook-spam-noaction' ); |
| 766 | $history[] = array( 'time' => 445856427, 'event' => 'webhook-ham-noaction' ); |
| 767 | */ |
| 768 | |
| 769 | usort( $history, array( 'Akismet', '_cmp_time' ) ); |
| 770 | return $history; |
| 771 | } |
| 772 | |
| 773 | /** |
| 774 | * Log an event for a given comment, storing it in comment_meta. |
| 775 | * |
| 776 | * @param int $comment_id The ID of the relevant comment. |
| 777 | * @param string $message The string description of the event. No longer used. |
| 778 | * @param string $event The event code. |
| 779 | * @param array $meta Metadata about the history entry. e.g., the user that reported or changed the status of a given comment. |
| 780 | */ |
| 781 | public static function update_comment_history( $comment_id, $message, $event = null, $meta = null ) { |
| 782 | global $current_user; |
| 783 | |
| 784 | $user = ''; |
| 785 | |
| 786 | $event = array( |
| 787 | 'time' => self::_get_microtime(), |
| 788 | 'event' => $event, |
| 789 | ); |
| 790 | |
| 791 | if ( is_object( $current_user ) && isset( $current_user->user_login ) ) { |
| 792 | $event['user'] = $current_user->user_login; |
| 793 | } |
| 794 | |
| 795 | if ( ! empty( $meta ) ) { |
| 796 | $event['meta'] = $meta; |
| 797 | } |
| 798 | |
| 799 | // $unique = false so as to allow multiple values per comment |
| 800 | $r = add_comment_meta( $comment_id, 'akismet_history', $event, false ); |
| 801 | } |
| 802 | |
| 803 | public static function check_db_comment( $id, $recheck_reason = 'recheck_queue' ) { |
| 804 | global $wpdb; |
| 805 | |
| 806 | if ( ! self::get_api_key() ) { |
| 807 | return new WP_Error( 'akismet-not-configured', __( 'Akismet is not configured. Please enter an API key.', 'akismet' ) ); |
| 808 | } |
| 809 | |
| 810 | $c = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->comments} WHERE comment_ID = %d", $id ), ARRAY_A ); |
| 811 | |
| 812 | if ( ! $c ) { |
| 813 | return new WP_Error( 'invalid-comment-id', __( 'Comment not found.', 'akismet' ) ); |
| 814 | } |
| 815 | |
| 816 | $c['user_ip'] = $c['comment_author_IP']; |
| 817 | $c['user_agent'] = $c['comment_agent']; |
| 818 | $c['referrer'] = ''; |
| 819 | $c['blog'] = get_option( 'home' ); |
| 820 | $c['blog_lang'] = get_locale(); |
| 821 | $c['blog_charset'] = get_option( 'blog_charset' ); |
| 822 | $c['permalink'] = get_permalink( $c['comment_post_ID'] ); |
| 823 | $c['recheck_reason'] = $recheck_reason; |
| 824 | |
| 825 | $c['user_role'] = ''; |
| 826 | if ( ! empty( $c['user_ID'] ) ) { |
| 827 | $c['user_role'] = self::get_user_roles( $c['user_ID'] ); |
| 828 | } |
| 829 | |
| 830 | if ( self::is_test_mode() ) { |
| 831 | $c['is_test'] = 'true'; |
| 832 | } |
| 833 | |
| 834 | $c = apply_filters( 'akismet_request_args', $c, 'comment-check' ); |
| 835 | |
| 836 | $response = self::http_post( self::build_query( $c ), 'comment-check' ); |
| 837 | |
| 838 | if ( ! empty( $response[1] ) ) { |
| 839 | return $response[1]; |
| 840 | } |
| 841 | |
| 842 | return false; |
| 843 | } |
| 844 | |
| 845 | public static function recheck_comment( $id, $recheck_reason = 'recheck_queue' ) { |
| 846 | add_comment_meta( $id, 'akismet_rechecking', true ); |
| 847 | |
| 848 | $api_response = self::check_db_comment( $id, $recheck_reason ); |
| 849 | |
| 850 | if ( is_wp_error( $api_response ) ) { |
| 851 | // Invalid comment ID. |
| 852 | } elseif ( 'true' === $api_response ) { |
| 853 | wp_set_comment_status( $id, 'spam' ); |
| 854 | update_comment_meta( $id, 'akismet_result', 'true' ); |
| 855 | delete_comment_meta( $id, 'akismet_error' ); |
| 856 | delete_comment_meta( $id, 'akismet_delayed_moderation_email' ); |
| 857 | self::update_comment_history( $id, '', 'recheck-spam' ); |
| 858 | } elseif ( 'false' === $api_response ) { |
| 859 | update_comment_meta( $id, 'akismet_result', 'false' ); |
| 860 | delete_comment_meta( $id, 'akismet_error' ); |
| 861 | delete_comment_meta( $id, 'akismet_delayed_moderation_email' ); |
| 862 | self::update_comment_history( $id, '', 'recheck-ham' ); |
| 863 | } else { |
| 864 | // abnormal result: error |
| 865 | update_comment_meta( $id, 'akismet_result', 'error' ); |
| 866 | self::update_comment_history( |
| 867 | $id, |
| 868 | '', |
| 869 | 'recheck-error', |
| 870 | array( 'response' => substr( $api_response, 0, 50 ) ) |
| 871 | ); |
| 872 | } |
| 873 | |
| 874 | delete_comment_meta( $id, 'akismet_rechecking' ); |
| 875 | |
| 876 | return $api_response; |
| 877 | } |
| 878 | |
| 879 | public static function transition_comment_status( $new_status, $old_status, $comment ) { |
| 880 | |
| 881 | if ( $new_status == $old_status ) { |
| 882 | return; |
| 883 | } |
| 884 | |
| 885 | if ( 'spam' === $new_status || 'spam' === $old_status ) { |
| 886 | // Clear the cache of the "X comments in your spam queue" count on the dashboard. |
| 887 | wp_cache_delete( 'akismet_spam_count', 'widget' ); |
| 888 | } |
| 889 | |
| 890 | // we don't need to record a history item for deleted comments |
| 891 | if ( $new_status == 'delete' ) { |
| 892 | return; |
| 893 | } |
| 894 | |
| 895 | if ( ! current_user_can( 'edit_post', $comment->comment_post_ID ) && ! current_user_can( 'moderate_comments' ) ) { |
| 896 | return; |
| 897 | } |
| 898 | |
| 899 | if ( defined( 'WP_IMPORTING' ) && WP_IMPORTING == true ) { |
| 900 | return; |
| 901 | } |
| 902 | |
| 903 | // if this is present, it means the status has been changed by a re-check, not an explicit user action |
| 904 | if ( get_comment_meta( $comment->comment_ID, 'akismet_rechecking' ) ) { |
| 905 | return; |
| 906 | } |
| 907 | |
| 908 | if ( function_exists( 'getallheaders' ) ) { |
| 909 | $request_headers = getallheaders(); |
| 910 | |
| 911 | foreach ( $request_headers as $header => $value ) { |
| 912 | if ( strtolower( $header ) == 'x-akismet-webhook' ) { |
| 913 | // This change is due to a webhook request. |
| 914 | return; |
| 915 | } |
| 916 | } |
| 917 | } |
| 918 | |
| 919 | // Assumption alert: |
| 920 | // We want to submit comments to Akismet only when a moderator explicitly spams or approves it - not if the status |
| 921 | // is changed automatically by another plugin. Unfortunately WordPress doesn't provide an unambiguous way to |
| 922 | // determine why the transition_comment_status action was triggered. And there are several different ways by which |
| 923 | // to spam and unspam comments: bulk actions, ajax, links in moderation emails, the dashboard, and perhaps others. |
| 924 | // We'll assume that this is an explicit user action if certain POST/GET variables exist. |
| 925 | if ( |
| 926 | // status=spam: Marking as spam via the REST API or... |
| 927 | // 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?... |
| 928 | // status=approved: Unspamming via the REST API (Calypso) or... |
| 929 | ( isset( $_POST['status'] ) && in_array( $_POST['status'], array( 'spam', 'unspam', 'approved' ) ) ) |
| 930 | // spam=1: Clicking "Spam" underneath a comment in wp-admin and allowing the AJAX request to happen. |
| 931 | || ( isset( $_POST['spam'] ) && (int) $_POST['spam'] == 1 ) |
| 932 | // 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. |
| 933 | || ( isset( $_POST['unspam'] ) && (int) $_POST['unspam'] == 1 ) |
| 934 | // comment_status=spam/unspam: It's unclear where this is happening. |
| 935 | || ( isset( $_POST['comment_status'] ) && in_array( $_POST['comment_status'], array( 'spam', 'unspam' ) ) ) |
| 936 | // action=spam: Choosing "Mark as Spam" from the Bulk Actions dropdown in wp-admin (or the "Spam it" link in notification emails). |
| 937 | // action=unspam: Choosing "Not Spam" from the Bulk Actions dropdown in wp-admin. |
| 938 | // action=spamcomment: Following the "Spam" link below a comment in wp-admin (not allowing AJAX request to happen). |
| 939 | // action=unspamcomment: Following the "Not Spam" link below a comment in wp-admin (not allowing AJAX request to happen). |
| 940 | || ( isset( $_GET['action'] ) && in_array( $_GET['action'], array( 'spam', 'unspam', 'spamcomment', 'unspamcomment' ) ) ) |
| 941 | // action=editedcomment: Editing a comment via wp-admin (and possibly changing its status). |
| 942 | || ( isset( $_POST['action'] ) && in_array( $_POST['action'], array( 'editedcomment' ) ) ) |
| 943 | // for=jetpack: Moderation via the WordPress app, Calypso, anything powered by the Jetpack connection. |
| 944 | || ( isset( $_GET['for'] ) && ( 'jetpack' == $_GET['for'] ) && ( ! defined( 'IS_WPCOM' ) || ! IS_WPCOM ) ) |
| 945 | // Certain WordPress.com API requests |
| 946 | || ( defined( 'REST_API_REQUEST' ) && REST_API_REQUEST ) |
| 947 | // WordPress.org REST API requests |
| 948 | || ( defined( 'REST_REQUEST' ) && REST_REQUEST ) |
| 949 | ) { |
| 950 | if ( $new_status == 'spam' && ( $old_status == 'approved' || $old_status == 'unapproved' || ! $old_status ) ) { |
| 951 | return self::submit_spam_comment( $comment->comment_ID ); |
| 952 | } elseif ( $old_status == 'spam' && ( $new_status == 'approved' || $new_status == 'unapproved' ) ) { |
| 953 | return self::submit_nonspam_comment( $comment->comment_ID ); |
| 954 | } |
| 955 | } |
| 956 | |
| 957 | self::update_comment_history( $comment->comment_ID, '', 'status-' . $new_status ); |
| 958 | } |
| 959 | |
| 960 | public static function submit_spam_comment( $comment_id ) { |
| 961 | global $wpdb, $current_user, $current_site; |
| 962 | |
| 963 | $comment_id = (int) $comment_id; |
| 964 | |
| 965 | $comment = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->comments} WHERE comment_ID = %d", $comment_id ), ARRAY_A ); |
| 966 | |
| 967 | if ( ! $comment ) { |
| 968 | // it was deleted |
| 969 | return; |
| 970 | } |
| 971 | |
| 972 | if ( 'spam' != $comment['comment_approved'] ) { |
| 973 | return; |
| 974 | } |
| 975 | |
| 976 | self::update_comment_history( $comment_id, '', 'report-spam' ); |
| 977 | |
| 978 | // If the user hasn't configured Akismet, there's nothing else to do at this point. |
| 979 | if ( ! self::get_api_key() ) { |
| 980 | return; |
| 981 | } |
| 982 | |
| 983 | // use the original version stored in comment_meta if available |
| 984 | $as_submitted = self::sanitize_comment_as_submitted( get_comment_meta( $comment_id, 'akismet_as_submitted', true ) ); |
| 985 | |
| 986 | if ( $as_submitted && is_array( $as_submitted ) && isset( $as_submitted['comment_content'] ) ) { |
| 987 | $comment = array_merge( $comment, $as_submitted ); |
| 988 | } |
| 989 | |
| 990 | $comment['blog'] = get_option( 'home' ); |
| 991 | $comment['blog_lang'] = get_locale(); |
| 992 | $comment['blog_charset'] = get_option( 'blog_charset' ); |
| 993 | $comment['permalink'] = get_permalink( $comment['comment_post_ID'] ); |
| 994 | |
| 995 | if ( is_object( $current_user ) ) { |
| 996 | $comment['reporter'] = $current_user->user_login; |
| 997 | } |
| 998 | |
| 999 | if ( is_object( $current_site ) ) { |
| 1000 | $comment['site_domain'] = $current_site->domain; |
| 1001 | } |
| 1002 | |
| 1003 | $comment['user_role'] = ''; |
| 1004 | if ( ! empty( $comment['user_ID'] ) ) { |
| 1005 | $comment['user_role'] = self::get_user_roles( $comment['user_ID'] ); |
| 1006 | } |
| 1007 | |
| 1008 | if ( self::is_test_mode() ) { |
| 1009 | $comment['is_test'] = 'true'; |
| 1010 | } |
| 1011 | |
| 1012 | $post = get_post( $comment['comment_post_ID'] ); |
| 1013 | |
| 1014 | if ( ! is_null( $post ) ) { |
| 1015 | $comment['comment_post_modified_gmt'] = $post->post_modified_gmt; |
| 1016 | } |
| 1017 | |
| 1018 | $comment['comment_check_response'] = self::last_comment_check_response( $comment_id ); |
| 1019 | |
| 1020 | $comment = apply_filters( 'akismet_request_args', $comment, 'submit-spam' ); |
| 1021 | |
| 1022 | $response = self::http_post( self::build_query( $comment ), 'submit-spam' ); |
| 1023 | |
| 1024 | update_comment_meta( $comment_id, 'akismet_user_result', 'true' ); |
| 1025 | |
| 1026 | if ( $comment['reporter'] ) { |
| 1027 | update_comment_meta( $comment_id, 'akismet_user', $comment['reporter'] ); |
| 1028 | } |
| 1029 | |
| 1030 | do_action( 'akismet_submit_spam_comment', $comment_id, $response[1] ); |
| 1031 | } |
| 1032 | |
| 1033 | public static function submit_nonspam_comment( $comment_id ) { |
| 1034 | global $wpdb, $current_user, $current_site; |
| 1035 | |
| 1036 | $comment_id = (int) $comment_id; |
| 1037 | |
| 1038 | $comment = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->comments} WHERE comment_ID = %d", $comment_id ), ARRAY_A ); |
| 1039 | |
| 1040 | if ( ! $comment ) { |
| 1041 | // it was deleted |
| 1042 | return; |
| 1043 | } |
| 1044 | |
| 1045 | self::update_comment_history( $comment_id, '', 'report-ham' ); |
| 1046 | |
| 1047 | // If the user hasn't configured Akismet, there's nothing else to do at this point. |
| 1048 | if ( ! self::get_api_key() ) { |
| 1049 | return; |
| 1050 | } |
| 1051 | |
| 1052 | // use the original version stored in comment_meta if available |
| 1053 | $as_submitted = self::sanitize_comment_as_submitted( get_comment_meta( $comment_id, 'akismet_as_submitted', true ) ); |
| 1054 | |
| 1055 | if ( $as_submitted && is_array( $as_submitted ) && isset( $as_submitted['comment_content'] ) ) { |
| 1056 | $comment = array_merge( $comment, $as_submitted ); |
| 1057 | } |
| 1058 | |
| 1059 | $comment['blog'] = get_option( 'home' ); |
| 1060 | $comment['blog_lang'] = get_locale(); |
| 1061 | $comment['blog_charset'] = get_option( 'blog_charset' ); |
| 1062 | $comment['permalink'] = get_permalink( $comment['comment_post_ID'] ); |
| 1063 | $comment['user_role'] = ''; |
| 1064 | |
| 1065 | if ( is_object( $current_user ) ) { |
| 1066 | $comment['reporter'] = $current_user->user_login; |
| 1067 | } |
| 1068 | |
| 1069 | if ( is_object( $current_site ) ) { |
| 1070 | $comment['site_domain'] = $current_site->domain; |
| 1071 | } |
| 1072 | |
| 1073 | if ( ! empty( $comment['user_ID'] ) ) { |
| 1074 | $comment['user_role'] = self::get_user_roles( $comment['user_ID'] ); |
| 1075 | } |
| 1076 | |
| 1077 | if ( self::is_test_mode() ) { |
| 1078 | $comment['is_test'] = 'true'; |
| 1079 | } |
| 1080 | |
| 1081 | $post = get_post( $comment['comment_post_ID'] ); |
| 1082 | |
| 1083 | if ( ! is_null( $post ) ) { |
| 1084 | $comment['comment_post_modified_gmt'] = $post->post_modified_gmt; |
| 1085 | } |
| 1086 | |
| 1087 | $comment['comment_check_response'] = self::last_comment_check_response( $comment_id ); |
| 1088 | |
| 1089 | $comment = apply_filters( 'akismet_request_args', $comment, 'submit-ham' ); |
| 1090 | |
| 1091 | $response = self::http_post( self::build_query( $comment ), 'submit-ham' ); |
| 1092 | |
| 1093 | update_comment_meta( $comment_id, 'akismet_user_result', 'false' ); |
| 1094 | |
| 1095 | if ( $comment['reporter'] ) { |
| 1096 | update_comment_meta( $comment_id, 'akismet_user', $comment['reporter'] ); |
| 1097 | } |
| 1098 | |
| 1099 | do_action( 'akismet_submit_nonspam_comment', $comment_id, $response[1] ); |
| 1100 | } |
| 1101 | |
| 1102 | public static function cron_recheck() { |
| 1103 | global $wpdb; |
| 1104 | |
| 1105 | $api_key = self::get_api_key(); |
| 1106 | |
| 1107 | $status = self::verify_key( $api_key ); |
| 1108 | if ( get_option( 'akismet_alert_code' ) || $status == 'invalid' ) { |
| 1109 | // since there is currently a problem with the key, reschedule a check for 6 hours hence |
| 1110 | wp_schedule_single_event( time() + 21600, 'akismet_schedule_cron_recheck' ); |
| 1111 | do_action( 'akismet_scheduled_recheck', 'key-problem-' . get_option( 'akismet_alert_code' ) . '-' . $status ); |
| 1112 | return false; |
| 1113 | } |
| 1114 | |
| 1115 | delete_option( 'akismet_available_servers' ); |
| 1116 | |
| 1117 | $comment_errors = $wpdb->get_col( "SELECT comment_id FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error' LIMIT 100" ); |
| 1118 | |
| 1119 | load_plugin_textdomain( 'akismet' ); |
| 1120 | |
| 1121 | foreach ( (array) $comment_errors as $comment_id ) { |
| 1122 | // if the comment no longer exists, or is too old, remove the meta entry from the queue to avoid getting stuck |
| 1123 | $comment = get_comment( $comment_id ); |
| 1124 | |
| 1125 | if ( |
| 1126 | ! $comment // Comment has been deleted |
| 1127 | || strtotime( $comment->comment_date_gmt ) < strtotime( '-15 days' ) // Comment is too old. |
| 1128 | || $comment->comment_approved !== '0' // Comment is no longer in the Pending queue |
| 1129 | ) { |
| 1130 | delete_comment_meta( $comment_id, 'akismet_error' ); |
| 1131 | delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' ); |
| 1132 | continue; |
| 1133 | } |
| 1134 | |
| 1135 | add_comment_meta( $comment_id, 'akismet_rechecking', true ); |
| 1136 | $status = self::check_db_comment( $comment_id, 'retry' ); |
| 1137 | |
| 1138 | $event = ''; |
| 1139 | if ( $status == 'true' ) { |
| 1140 | $event = 'cron-retry-spam'; |
| 1141 | } elseif ( $status == 'false' ) { |
| 1142 | $event = 'cron-retry-ham'; |
| 1143 | } |
| 1144 | |
| 1145 | // If we got back a legit response then update the comment history |
| 1146 | // other wise just bail now and try again later. No point in |
| 1147 | // re-trying all the comments once we hit one failure. |
| 1148 | if ( ! empty( $event ) ) { |
| 1149 | delete_comment_meta( $comment_id, 'akismet_error' ); |
| 1150 | self::update_comment_history( $comment_id, '', $event ); |
| 1151 | update_comment_meta( $comment_id, 'akismet_result', $status ); |
| 1152 | // make sure the comment status is still pending. if it isn't, that means the user has already moved it elsewhere. |
| 1153 | $comment = get_comment( $comment_id ); |
| 1154 | if ( $comment && 'unapproved' == wp_get_comment_status( $comment_id ) ) { |
| 1155 | if ( $status == 'true' ) { |
| 1156 | wp_spam_comment( $comment_id ); |
| 1157 | } elseif ( $status == 'false' ) { |
| 1158 | // comment is good, but it's still in the pending queue. depending on the moderation settings |
| 1159 | // we may need to change it to approved. |
| 1160 | 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 ) ) { |
| 1161 | wp_set_comment_status( $comment_id, 1 ); |
| 1162 | } elseif ( get_comment_meta( $comment_id, 'akismet_delayed_moderation_email', true ) ) { |
| 1163 | wp_notify_moderator( $comment_id ); |
| 1164 | } |
| 1165 | } |
| 1166 | } |
| 1167 | |
| 1168 | delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' ); |
| 1169 | } else { |
| 1170 | // If this comment has been pending moderation for longer than MAX_DELAY_BEFORE_MODERATION_EMAIL, |
| 1171 | // send a moderation email now. |
| 1172 | if ( ( intval( gmdate( 'U' ) ) - strtotime( $comment->comment_date_gmt ) ) < self::MAX_DELAY_BEFORE_MODERATION_EMAIL ) { |
| 1173 | delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' ); |
| 1174 | wp_notify_moderator( $comment_id ); |
| 1175 | } |
| 1176 | |
| 1177 | delete_comment_meta( $comment_id, 'akismet_rechecking' ); |
| 1178 | wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' ); |
| 1179 | do_action( 'akismet_scheduled_recheck', 'check-db-comment-' . $status ); |
| 1180 | return; |
| 1181 | } |
| 1182 | delete_comment_meta( $comment_id, 'akismet_rechecking' ); |
| 1183 | } |
| 1184 | |
| 1185 | $remaining = $wpdb->get_var( "SELECT COUNT(*) FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error'" ); |
| 1186 | if ( $remaining && ! wp_next_scheduled( 'akismet_schedule_cron_recheck' ) ) { |
| 1187 | wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' ); |
| 1188 | do_action( 'akismet_scheduled_recheck', 'remaining' ); |
| 1189 | } |
| 1190 | } |
| 1191 | |
| 1192 | public static function fix_scheduled_recheck() { |
| 1193 | $future_check = wp_next_scheduled( 'akismet_schedule_cron_recheck' ); |
| 1194 | if ( ! $future_check ) { |
| 1195 | return; |
| 1196 | } |
| 1197 | |
| 1198 | if ( get_option( 'akismet_alert_code' ) > 0 ) { |
| 1199 | return; |
| 1200 | } |
| 1201 | |
| 1202 | $check_range = time() + 1200; |
| 1203 | if ( $future_check > $check_range ) { |
| 1204 | wp_clear_scheduled_hook( 'akismet_schedule_cron_recheck' ); |
| 1205 | wp_schedule_single_event( time() + 300, 'akismet_schedule_cron_recheck' ); |
| 1206 | do_action( 'akismet_scheduled_recheck', 'fix-scheduled-recheck' ); |
| 1207 | } |
| 1208 | } |
| 1209 | |
| 1210 | public static function add_comment_nonce( $post_id ) { |
| 1211 | /** |
| 1212 | * To disable the Akismet comment nonce, add a filter for the 'akismet_comment_nonce' tag |
| 1213 | * and return any string value that is not 'true' or '' (empty string). |
| 1214 | * |
| 1215 | * Don't return boolean false, because that implies that the 'akismet_comment_nonce' option |
| 1216 | * has not been set and that Akismet should just choose the default behavior for that |
| 1217 | * situation. |
| 1218 | */ |
| 1219 | |
| 1220 | if ( ! self::get_api_key() ) { |
| 1221 | return; |
| 1222 | } |
| 1223 | |
| 1224 | $akismet_comment_nonce_option = apply_filters( 'akismet_comment_nonce', get_option( 'akismet_comment_nonce' ) ); |
| 1225 | |
| 1226 | if ( $akismet_comment_nonce_option == 'true' || $akismet_comment_nonce_option == '' ) { |
| 1227 | echo '<p style="display: none;">'; |
| 1228 | wp_nonce_field( 'akismet_comment_nonce_' . $post_id, 'akismet_comment_nonce', false ); |
| 1229 | echo '</p>'; |
| 1230 | } |
| 1231 | } |
| 1232 | |
| 1233 | public static function is_test_mode() { |
| 1234 | return defined( 'AKISMET_TEST_MODE' ) && AKISMET_TEST_MODE; |
| 1235 | } |
| 1236 | |
| 1237 | public static function allow_discard() { |
| 1238 | if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) { |
| 1239 | return false; |
| 1240 | } |
| 1241 | if ( is_user_logged_in() ) { |
| 1242 | return false; |
| 1243 | } |
| 1244 | |
| 1245 | return ( get_option( 'akismet_strictness' ) === '1' ); |
| 1246 | } |
| 1247 | |
| 1248 | public static function get_ip_address() { |
| 1249 | return isset( $_SERVER['REMOTE_ADDR'] ) ? $_SERVER['REMOTE_ADDR'] : null; |
| 1250 | } |
| 1251 | |
| 1252 | /** |
| 1253 | * Do these two comments, without checking the comment_ID, "match"? |
| 1254 | * |
| 1255 | * @param mixed $comment1 A comment object or array. |
| 1256 | * @param mixed $comment2 A comment object or array. |
| 1257 | * @return bool Whether the two comments should be treated as the same comment. |
| 1258 | */ |
| 1259 | private static function comments_match( $comment1, $comment2 ) { |
| 1260 | $comment1 = (array) $comment1; |
| 1261 | $comment2 = (array) $comment2; |
| 1262 | |
| 1263 | // Set default values for these strings that we check in order to simplify |
| 1264 | // the checks and avoid PHP warnings. |
| 1265 | if ( ! isset( $comment1['comment_author'] ) ) { |
| 1266 | $comment1['comment_author'] = ''; |
| 1267 | } |
| 1268 | |
| 1269 | if ( ! isset( $comment2['comment_author'] ) ) { |
| 1270 | $comment2['comment_author'] = ''; |
| 1271 | } |
| 1272 | |
| 1273 | if ( ! isset( $comment1['comment_author_email'] ) ) { |
| 1274 | $comment1['comment_author_email'] = ''; |
| 1275 | } |
| 1276 | |
| 1277 | if ( ! isset( $comment2['comment_author_email'] ) ) { |
| 1278 | $comment2['comment_author_email'] = ''; |
| 1279 | } |
| 1280 | |
| 1281 | $comments_match = ( |
| 1282 | isset( $comment1['comment_post_ID'], $comment2['comment_post_ID'] ) |
| 1283 | && intval( $comment1['comment_post_ID'] ) == intval( $comment2['comment_post_ID'] ) |
| 1284 | && ( |
| 1285 | // The comment author length max is 255 characters, limited by the TINYTEXT column type. |
| 1286 | // If the comment author includes multibyte characters right around the 255-byte mark, they |
| 1287 | // may be stripped when the author is saved in the DB, so a 300+ char author may turn into |
| 1288 | // a 253-char author when it's saved, not 255 exactly. The longest possible character is |
| 1289 | // theoretically 6 bytes, so we'll only look at the first 248 bytes to be safe. |
| 1290 | substr( $comment1['comment_author'], 0, 248 ) == substr( $comment2['comment_author'], 0, 248 ) |
| 1291 | || substr( stripslashes( $comment1['comment_author'] ), 0, 248 ) == substr( $comment2['comment_author'], 0, 248 ) |
| 1292 | || substr( $comment1['comment_author'], 0, 248 ) == substr( stripslashes( $comment2['comment_author'] ), 0, 248 ) |
| 1293 | // Certain long comment author names will be truncated to nothing, depending on their encoding. |
| 1294 | || ( ! $comment1['comment_author'] && strlen( $comment2['comment_author'] ) > 248 ) |
| 1295 | || ( ! $comment2['comment_author'] && strlen( $comment1['comment_author'] ) > 248 ) |
| 1296 | ) |
| 1297 | && ( |
| 1298 | // The email max length is 100 characters, limited by the VARCHAR(100) column type. |
| 1299 | // Same argument as above for only looking at the first 93 characters. |
| 1300 | substr( $comment1['comment_author_email'], 0, 93 ) == substr( $comment2['comment_author_email'], 0, 93 ) |
| 1301 | || substr( stripslashes( $comment1['comment_author_email'] ), 0, 93 ) == substr( $comment2['comment_author_email'], 0, 93 ) |
| 1302 | || substr( $comment1['comment_author_email'], 0, 93 ) == substr( stripslashes( $comment2['comment_author_email'] ), 0, 93 ) |
| 1303 | // Very long emails can be truncated and then stripped if the [0:100] substring isn't a valid address. |
| 1304 | || ( ! $comment1['comment_author_email'] && strlen( $comment2['comment_author_email'] ) > 100 ) |
| 1305 | || ( ! $comment2['comment_author_email'] && strlen( $comment1['comment_author_email'] ) > 100 ) |
| 1306 | ) |
| 1307 | ); |
| 1308 | |
| 1309 | return $comments_match; |
| 1310 | } |
| 1311 | |
| 1312 | // Does the supplied comment match the details of the one most recently stored in self::$last_comment? |
| 1313 | public static function matches_last_comment( $comment ) { |
| 1314 | return self::comments_match( self::$last_comment, $comment ); |
| 1315 | } |
| 1316 | |
| 1317 | private static function get_user_agent() { |
| 1318 | return isset( $_SERVER['HTTP_USER_AGENT'] ) ? $_SERVER['HTTP_USER_AGENT'] : null; |
| 1319 | } |
| 1320 | |
| 1321 | private static function get_referer() { |
| 1322 | return isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : null; |
| 1323 | } |
| 1324 | |
| 1325 | // return a comma-separated list of role names for the given user |
| 1326 | public static function get_user_roles( $user_id ) { |
| 1327 | $comment_user = null; |
| 1328 | $roles = false; |
| 1329 | |
| 1330 | if ( ! class_exists( 'WP_User' ) ) { |
| 1331 | return false; |
| 1332 | } |
| 1333 | |
| 1334 | if ( $user_id > 0 ) { |
| 1335 | $comment_user = new WP_User( $user_id ); |
| 1336 | if ( isset( $comment_user->roles ) ) { |
| 1337 | $roles = implode( ',', $comment_user->roles ); |
| 1338 | } |
| 1339 | } |
| 1340 | |
| 1341 | if ( is_multisite() && is_super_admin( $user_id ) ) { |
| 1342 | if ( empty( $roles ) ) { |
| 1343 | $roles = 'super_admin'; |
| 1344 | } else { |
| 1345 | $comment_user->roles[] = 'super_admin'; |
| 1346 | $roles = implode( ',', $comment_user->roles ); |
| 1347 | } |
| 1348 | } |
| 1349 | |
| 1350 | return $roles; |
| 1351 | } |
| 1352 | |
| 1353 | // filter handler used to return a spam result to pre_comment_approved |
| 1354 | public static function last_comment_status( $approved, $comment ) { |
| 1355 | if ( is_null( self::$last_comment_result ) ) { |
| 1356 | // We didn't have reason to store the result of the last check. |
| 1357 | return $approved; |
| 1358 | } |
| 1359 | |
| 1360 | // Only do this if it's the correct comment |
| 1361 | if ( ! self::matches_last_comment( $comment ) ) { |
| 1362 | self::log( "comment_is_spam mismatched comment, returning unaltered $approved" ); |
| 1363 | return $approved; |
| 1364 | } |
| 1365 | |
| 1366 | if ( 'trash' === $approved ) { |
| 1367 | // If the last comment we checked has had its approval set to 'trash', |
| 1368 | // then it failed the comment blacklist check. Let that blacklist override |
| 1369 | // the spam check, since users have the (valid) expectation that when |
| 1370 | // they fill out their blacklists, comments that match it will always |
| 1371 | // end up in the trash. |
| 1372 | return $approved; |
| 1373 | } |
| 1374 | |
| 1375 | // bump the counter here instead of when the filter is added to reduce the possibility of overcounting |
| 1376 | if ( $incr = apply_filters( 'akismet_spam_count_incr', 1 ) ) { |
| 1377 | update_option( 'akismet_spam_count', get_option( 'akismet_spam_count' ) + $incr ); |
| 1378 | } |
| 1379 | |
| 1380 | return self::$last_comment_result; |
| 1381 | } |
| 1382 | |
| 1383 | /** |
| 1384 | * If Akismet is temporarily unreachable, we don't want to "spam" the blogger with |
| 1385 | * moderation emails for comments that will be automatically cleared or spammed on |
| 1386 | * the next retry. |
| 1387 | * |
| 1388 | * For comments that will be rechecked later, empty the list of email addresses that |
| 1389 | * the moderation email would be sent to. |
| 1390 | * |
| 1391 | * @param array $emails An array of email addresses that the moderation email will be sent to. |
| 1392 | * @param int $comment_id The ID of the relevant comment. |
| 1393 | * @return array An array of email addresses that the moderation email will be sent to. |
| 1394 | */ |
| 1395 | public static function disable_moderation_emails_if_unreachable( $emails, $comment_id ) { |
| 1396 | if ( ! empty( self::$prevent_moderation_email_for_these_comments ) && ! empty( $emails ) ) { |
| 1397 | $comment = get_comment( $comment_id ); |
| 1398 | |
| 1399 | if ( $comment ) { |
| 1400 | foreach ( self::$prevent_moderation_email_for_these_comments as $possible_match ) { |
| 1401 | if ( self::comments_match( $possible_match, $comment ) ) { |
| 1402 | update_comment_meta( $comment_id, 'akismet_delayed_moderation_email', true ); |
| 1403 | return array(); |
| 1404 | } |
| 1405 | } |
| 1406 | } |
| 1407 | } |
| 1408 | |
| 1409 | return $emails; |
| 1410 | } |
| 1411 | |
| 1412 | public static function _cmp_time( $a, $b ) { |
| 1413 | return $a['time'] > $b['time'] ? -1 : 1; |
| 1414 | } |
| 1415 | |
| 1416 | public static function _get_microtime() { |
| 1417 | $mtime = explode( ' ', microtime() ); |
| 1418 | return $mtime[1] + $mtime[0]; |
| 1419 | } |
| 1420 | |
| 1421 | /** |
| 1422 | * Make a POST request to the Akismet API. |
| 1423 | * |
| 1424 | * @param string $request The body of the request. |
| 1425 | * @param string $path The path for the request. |
| 1426 | * @param string $ip The specific IP address to hit. |
| 1427 | * @return array A two-member array consisting of the headers and the response body, both empty in the case of a failure. |
| 1428 | */ |
| 1429 | public static function http_post( $request, $path, $ip = null ) { |
| 1430 | |
| 1431 | $akismet_ua = sprintf( 'WordPress/%s | Akismet/%s', $GLOBALS['wp_version'], constant( 'AKISMET_VERSION' ) ); |
| 1432 | $akismet_ua = apply_filters( 'akismet_ua', $akismet_ua ); |
| 1433 | |
| 1434 | $host = self::API_HOST; |
| 1435 | $api_key = self::get_api_key(); |
| 1436 | |
| 1437 | if ( $api_key ) { |
| 1438 | $request = add_query_arg( 'api_key', $api_key, $request ); |
| 1439 | } |
| 1440 | |
| 1441 | $http_host = $host; |
| 1442 | // use a specific IP if provided |
| 1443 | // needed by Akismet_Admin::check_server_connectivity() |
| 1444 | if ( $ip && long2ip( ip2long( $ip ) ) ) { |
| 1445 | $http_host = $ip; |
| 1446 | } |
| 1447 | |
| 1448 | $http_args = array( |
| 1449 | 'body' => $request, |
| 1450 | 'headers' => array( |
| 1451 | 'Content-Type' => 'application/x-www-form-urlencoded; charset=' . get_option( 'blog_charset' ), |
| 1452 | 'Host' => $host, |
| 1453 | 'User-Agent' => $akismet_ua, |
| 1454 | ), |
| 1455 | 'httpversion' => '1.0', |
| 1456 | 'timeout' => 15, |
| 1457 | ); |
| 1458 | |
| 1459 | $akismet_url = $http_akismet_url = "http://{$http_host}/1.1/{$path}"; |
| 1460 | |
| 1461 | /** |
| 1462 | * Try SSL first; if that fails, try without it and don't try it again for a while. |
| 1463 | */ |
| 1464 | |
| 1465 | $ssl = $ssl_failed = false; |
| 1466 | |
| 1467 | // Check if SSL requests were disabled fewer than X hours ago. |
| 1468 | $ssl_disabled = get_option( 'akismet_ssl_disabled' ); |
| 1469 | |
| 1470 | if ( $ssl_disabled && $ssl_disabled < ( time() - 60 * 60 * 24 ) ) { // 24 hours |
| 1471 | $ssl_disabled = false; |
| 1472 | delete_option( 'akismet_ssl_disabled' ); |
| 1473 | } elseif ( $ssl_disabled ) { |
| 1474 | do_action( 'akismet_ssl_disabled' ); |
| 1475 | } |
| 1476 | |
| 1477 | if ( ! $ssl_disabled && ( $ssl = wp_http_supports( array( 'ssl' ) ) ) ) { |
| 1478 | $akismet_url = set_url_scheme( $akismet_url, 'https' ); |
| 1479 | |
| 1480 | do_action( 'akismet_https_request_pre' ); |
| 1481 | } |
| 1482 | |
| 1483 | $response = wp_remote_post( $akismet_url, $http_args ); |
| 1484 | |
| 1485 | self::log( compact( 'akismet_url', 'http_args', 'response' ) ); |
| 1486 | |
| 1487 | if ( $ssl && is_wp_error( $response ) ) { |
| 1488 | do_action( 'akismet_https_request_failure', $response ); |
| 1489 | |
| 1490 | // Intermittent connection problems may cause the first HTTPS |
| 1491 | // request to fail and subsequent HTTP requests to succeed randomly. |
| 1492 | // Retry the HTTPS request once before disabling SSL for a time. |
| 1493 | $response = wp_remote_post( $akismet_url, $http_args ); |
| 1494 | |
| 1495 | self::log( compact( 'akismet_url', 'http_args', 'response' ) ); |
| 1496 | |
| 1497 | if ( is_wp_error( $response ) ) { |
| 1498 | $ssl_failed = true; |
| 1499 | |
| 1500 | do_action( 'akismet_https_request_failure', $response ); |
| 1501 | |
| 1502 | do_action( 'akismet_http_request_pre' ); |
| 1503 | |
| 1504 | // Try the request again without SSL. |
| 1505 | $response = wp_remote_post( $http_akismet_url, $http_args ); |
| 1506 | |
| 1507 | self::log( compact( 'http_akismet_url', 'http_args', 'response' ) ); |
| 1508 | } |
| 1509 | } |
| 1510 | |
| 1511 | if ( is_wp_error( $response ) ) { |
| 1512 | do_action( 'akismet_request_failure', $response ); |
| 1513 | |
| 1514 | return array( '', '' ); |
| 1515 | } |
| 1516 | |
| 1517 | if ( $ssl_failed ) { |
| 1518 | // The request failed when using SSL but succeeded without it. Disable SSL for future requests. |
| 1519 | update_option( 'akismet_ssl_disabled', time() ); |
| 1520 | |
| 1521 | do_action( 'akismet_https_disabled' ); |
| 1522 | } |
| 1523 | |
| 1524 | $simplified_response = array( $response['headers'], $response['body'] ); |
| 1525 | |
| 1526 | $alert_code_check_paths = array( |
| 1527 | 'verify-key', |
| 1528 | 'comment-check', |
| 1529 | 'get-stats', |
| 1530 | ); |
| 1531 | |
| 1532 | if ( in_array( $path, $alert_code_check_paths ) ) { |
| 1533 | self::update_alert( $simplified_response ); |
| 1534 | } |
| 1535 | |
| 1536 | return $simplified_response; |
| 1537 | } |
| 1538 | |
| 1539 | // given a response from an API call like check_key_status(), update the alert code options if an alert is present. |
| 1540 | public static function update_alert( $response ) { |
| 1541 | $alert_option_prefix = 'akismet_alert_'; |
| 1542 | $alert_header_prefix = 'x-akismet-alert-'; |
| 1543 | $alert_header_names = array( |
| 1544 | 'code', |
| 1545 | 'msg', |
| 1546 | 'api-calls', |
| 1547 | 'usage-limit', |
| 1548 | 'upgrade-plan', |
| 1549 | 'upgrade-url', |
| 1550 | 'upgrade-type', |
| 1551 | 'upgrade-via-support', |
| 1552 | ); |
| 1553 | |
| 1554 | foreach ( $alert_header_names as $alert_header_name ) { |
| 1555 | $value = null; |
| 1556 | if ( isset( $response[0][ $alert_header_prefix . $alert_header_name ] ) ) { |
| 1557 | $value = $response[0][ $alert_header_prefix . $alert_header_name ]; |
| 1558 | } |
| 1559 | |
| 1560 | $option_name = $alert_option_prefix . str_replace( '-', '_', $alert_header_name ); |
| 1561 | if ( $value != get_option( $option_name ) ) { |
| 1562 | if ( ! $value ) { |
| 1563 | delete_option( $option_name ); |
| 1564 | } else { |
| 1565 | update_option( $option_name, $value ); |
| 1566 | } |
| 1567 | } |
| 1568 | } |
| 1569 | } |
| 1570 | |
| 1571 | /** |
| 1572 | * Mark akismet-frontend.js as deferred. Because nothing depends on it, it can run at any time |
| 1573 | * after it's loaded, and the browser won't have to wait for it to load to continue |
| 1574 | * parsing the rest of the page. |
| 1575 | */ |
| 1576 | public static function set_form_js_async( $tag, $handle, $src ) { |
| 1577 | if ( 'akismet-frontend' !== $handle ) { |
| 1578 | return $tag; |
| 1579 | } |
| 1580 | |
| 1581 | return preg_replace( '/^<script /i', '<script defer ', $tag ); |
| 1582 | } |
| 1583 | |
| 1584 | public static function get_akismet_form_fields() { |
| 1585 | $fields = ''; |
| 1586 | |
| 1587 | $prefix = 'ak_'; |
| 1588 | |
| 1589 | // Contact Form 7 uses _wpcf7 as a prefix to know which fields to exclude from comment_content. |
| 1590 | if ( 'wpcf7_form_elements' === current_filter() ) { |
| 1591 | $prefix = '_wpcf7_ak_'; |
| 1592 | } |
| 1593 | |
| 1594 | $fields .= '<p style="display: none !important;" class="akismet-fields-container" data-prefix="' . esc_attr( $prefix ) . '">'; |
| 1595 | $fields .= '<label>Δ<textarea name="' . $prefix . 'hp_textarea" cols="45" rows="8" maxlength="100"></textarea></label>'; |
| 1596 | |
| 1597 | if ( ! function_exists( 'amp_is_request' ) || ! amp_is_request() ) { |
| 1598 | // Keep track of how many ak_js fields are in this page so that we don't re-use |
| 1599 | // the same ID. |
| 1600 | static $field_count = 0; |
| 1601 | |
| 1602 | ++$field_count; |
| 1603 | |
| 1604 | $fields .= '<input type="hidden" id="ak_js_' . $field_count . '" name="' . $prefix . 'js" value="' . mt_rand( 0, 250 ) . '"/>'; |
| 1605 | $fields .= '<script>document.getElementById( "ak_js_' . $field_count . '" ).setAttribute( "value", ( new Date() ).getTime() );</script>'; |
| 1606 | } |
| 1607 | |
| 1608 | $fields .= '</p>'; |
| 1609 | |
| 1610 | return $fields; |
| 1611 | } |
| 1612 | |
| 1613 | public static function output_custom_form_fields( $post_id ) { |
| 1614 | if ( 'fluentform/form_element_start' === current_filter() && did_action( 'fluentform_form_element_start' ) ) { |
| 1615 | // Already did this via the legacy filter. |
| 1616 | return; |
| 1617 | } |
| 1618 | |
| 1619 | // phpcs:ignore WordPress.Security.EscapeOutput |
| 1620 | echo self::get_akismet_form_fields(); |
| 1621 | } |
| 1622 | |
| 1623 | public static function inject_custom_form_fields( $html ) { |
| 1624 | $html = str_replace( '</form>', self::get_akismet_form_fields() . '</form>', $html ); |
| 1625 | |
| 1626 | return $html; |
| 1627 | } |
| 1628 | |
| 1629 | public static function append_custom_form_fields( $html ) { |
| 1630 | $html .= self::get_akismet_form_fields(); |
| 1631 | |
| 1632 | return $html; |
| 1633 | } |
| 1634 | |
| 1635 | /** |
| 1636 | * Ensure that any Akismet-added form fields are included in the comment-check call. |
| 1637 | * |
| 1638 | * @param array $form |
| 1639 | * @param array $data Some plugins will supply the POST data via the filter, since they don't |
| 1640 | * read it directly from $_POST. |
| 1641 | * @return array $form |
| 1642 | */ |
| 1643 | public static function prepare_custom_form_values( $form, $data = null ) { |
| 1644 | if ( 'fluentform/akismet_fields' === current_filter() && did_filter( 'fluentform_akismet_fields' ) ) { |
| 1645 | // Already updated the form fields via the legacy filter. |
| 1646 | return $form; |
| 1647 | } |
| 1648 | |
| 1649 | if ( is_null( $data ) ) { |
| 1650 | // phpcs:ignore WordPress.Security.NonceVerification.Missing |
| 1651 | $data = $_POST; |
| 1652 | } |
| 1653 | |
| 1654 | $prefix = 'ak_'; |
| 1655 | |
| 1656 | // Contact Form 7 uses _wpcf7 as a prefix to know which fields to exclude from comment_content. |
| 1657 | if ( 'wpcf7_akismet_parameters' === current_filter() ) { |
| 1658 | $prefix = '_wpcf7_ak_'; |
| 1659 | } |
| 1660 | |
| 1661 | foreach ( $data as $key => $val ) { |
| 1662 | if ( 0 === strpos( $key, $prefix ) ) { |
| 1663 | $form[ 'POST_ak_' . substr( $key, strlen( $prefix ) ) ] = $val; |
| 1664 | } |
| 1665 | } |
| 1666 | |
| 1667 | return $form; |
| 1668 | } |
| 1669 | |
| 1670 | private static function bail_on_activation( $message, $deactivate = true ) { |
| 1671 | ?> |
| 1672 | <!doctype html> |
| 1673 | <html> |
| 1674 | <head> |
| 1675 | <meta charset="<?php bloginfo( 'charset' ); ?>" /> |
| 1676 | <style> |
| 1677 | * { |
| 1678 | text-align: center; |
| 1679 | margin: 0; |
| 1680 | padding: 0; |
| 1681 | font-family: "Lucida Grande",Verdana,Arial,"Bitstream Vera Sans",sans-serif; |
| 1682 | } |
| 1683 | p { |
| 1684 | margin-top: 1em; |
| 1685 | font-size: 18px; |
| 1686 | } |
| 1687 | </style> |
| 1688 | </head> |
| 1689 | <body> |
| 1690 | <p><?php echo esc_html( $message ); ?></p> |
| 1691 | </body> |
| 1692 | </html> |
| 1693 | <?php |
| 1694 | if ( $deactivate ) { |
| 1695 | $plugins = get_option( 'active_plugins' ); |
| 1696 | $akismet = plugin_basename( AKISMET__PLUGIN_DIR . 'akismet.php' ); |
| 1697 | $update = false; |
| 1698 | foreach ( $plugins as $i => $plugin ) { |
| 1699 | if ( $plugin === $akismet ) { |
| 1700 | $plugins[ $i ] = false; |
| 1701 | $update = true; |
| 1702 | } |
| 1703 | } |
| 1704 | |
| 1705 | if ( $update ) { |
| 1706 | update_option( 'active_plugins', array_filter( $plugins ) ); |
| 1707 | } |
| 1708 | } |
| 1709 | exit; |
| 1710 | } |
| 1711 | |
| 1712 | public static function view( $name, array $args = array() ) { |
| 1713 | $args = apply_filters( 'akismet_view_arguments', $args, $name ); |
| 1714 | |
| 1715 | foreach ( $args as $key => $val ) { |
| 1716 | $$key = $val; |
| 1717 | } |
| 1718 | |
| 1719 | load_plugin_textdomain( 'akismet' ); |
| 1720 | |
| 1721 | $file = AKISMET__PLUGIN_DIR . 'views/' . basename( $name ) . '.php'; |
| 1722 | |
| 1723 | if ( file_exists( $file ) ) { |
| 1724 | include $file; |
| 1725 | } |
| 1726 | } |
| 1727 | |
| 1728 | /** |
| 1729 | * Attached to activate_{ plugin_basename( __FILES__ ) } by register_activation_hook() |
| 1730 | * |
| 1731 | * @static |
| 1732 | */ |
| 1733 | public static function plugin_activation() { |
| 1734 | if ( version_compare( $GLOBALS['wp_version'], AKISMET__MINIMUM_WP_VERSION, '<' ) ) { |
| 1735 | load_plugin_textdomain( 'akismet' ); |
| 1736 | |
| 1737 | $message = '<strong>' . |
| 1738 | /* translators: 1: Current Akismet version number, 2: Minimum WordPress version number required. */ |
| 1739 | sprintf( esc_html__( 'Akismet %1$s requires WordPress %2$s or higher.', 'akismet' ), AKISMET_VERSION, AKISMET__MINIMUM_WP_VERSION ) . '</strong> ' . |
| 1740 | /* translators: 1: WordPress documentation URL, 2: Akismet download URL. */ |
| 1741 | sprintf( __( 'Please <a href="%1$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/plugins/akismet' ); |
| 1742 | |
| 1743 | self::bail_on_activation( $message ); |
| 1744 | } elseif ( ! empty( $_SERVER['SCRIPT_NAME'] ) && false !== strpos( $_SERVER['SCRIPT_NAME'], '/wp-admin/plugins.php' ) ) { |
| 1745 | add_option( 'Activated_Akismet', true ); |
| 1746 | } |
| 1747 | } |
| 1748 | |
| 1749 | /** |
| 1750 | * Removes all connection options |
| 1751 | * |
| 1752 | * @static |
| 1753 | */ |
| 1754 | public static function plugin_deactivation() { |
| 1755 | self::deactivate_key( self::get_api_key() ); |
| 1756 | |
| 1757 | // Remove any scheduled cron jobs. |
| 1758 | $akismet_cron_events = array( |
| 1759 | 'akismet_schedule_cron_recheck', |
| 1760 | 'akismet_scheduled_delete', |
| 1761 | ); |
| 1762 | |
| 1763 | foreach ( $akismet_cron_events as $akismet_cron_event ) { |
| 1764 | $timestamp = wp_next_scheduled( $akismet_cron_event ); |
| 1765 | |
| 1766 | if ( $timestamp ) { |
| 1767 | wp_unschedule_event( $timestamp, $akismet_cron_event ); |
| 1768 | } |
| 1769 | } |
| 1770 | } |
| 1771 | |
| 1772 | /** |
| 1773 | * Essentially a copy of WP's build_query but one that doesn't expect pre-urlencoded values. |
| 1774 | * |
| 1775 | * @param array $args An array of key => value pairs |
| 1776 | * @return string A string ready for use as a URL query string. |
| 1777 | */ |
| 1778 | public static function build_query( $args ) { |
| 1779 | return _http_build_query( $args, '', '&' ); |
| 1780 | } |
| 1781 | |
| 1782 | /** |
| 1783 | * Log debugging info to the error log. |
| 1784 | * |
| 1785 | * Enabled when WP_DEBUG_LOG is enabled (and WP_DEBUG, since according to |
| 1786 | * core, "WP_DEBUG_DISPLAY and WP_DEBUG_LOG perform no function unless |
| 1787 | * WP_DEBUG is true), but can be disabled via the akismet_debug_log filter. |
| 1788 | * |
| 1789 | * @param mixed $akismet_debug The data to log. |
| 1790 | */ |
| 1791 | public static function log( $akismet_debug ) { |
| 1792 | if ( apply_filters( 'akismet_debug_log', defined( 'WP_DEBUG' ) && WP_DEBUG && defined( 'WP_DEBUG_LOG' ) && WP_DEBUG_LOG && defined( 'AKISMET_DEBUG' ) && AKISMET_DEBUG ) ) { |
| 1793 | error_log( print_r( compact( 'akismet_debug' ), true ) ); |
| 1794 | } |
| 1795 | } |
| 1796 | |
| 1797 | /** |
| 1798 | * Check pingbacks for spam before they're saved to the DB. |
| 1799 | * |
| 1800 | * @param string $method The XML-RPC method that was called. |
| 1801 | * @param array $args This and the $server arg are marked as optional since plugins might still be |
| 1802 | * calling do_action( 'xmlrpc_action', [...] ) without the arguments that were added in WP 5.7. |
| 1803 | * @param wp_xmlrpc_server $server |
| 1804 | */ |
| 1805 | public static function pre_check_pingback( $method, $args = array(), $server = null ) { |
| 1806 | if ( $method !== 'pingback.ping' ) { |
| 1807 | return; |
| 1808 | } |
| 1809 | |
| 1810 | /* |
| 1811 | * $args looks like this: |
| 1812 | * |
| 1813 | * Array |
| 1814 | * ( |
| 1815 | * [0] => http://www.example.net/?p=1 // Site that created the pingback. |
| 1816 | * [1] => https://www.example.com/?p=2 // Post being pingback'd on this site. |
| 1817 | * ) |
| 1818 | */ |
| 1819 | |
| 1820 | if ( ! is_null( $server ) && ! empty( $args[1] ) ) { |
| 1821 | $is_multicall = false; |
| 1822 | $multicall_count = 0; |
| 1823 | |
| 1824 | if ( 'system.multicall' === $server->message->methodName ) { |
| 1825 | $is_multicall = true; |
| 1826 | $multicall_count = is_countable( $server->message->params ) ? count( $server->message->params ) : 0; |
| 1827 | } |
| 1828 | |
| 1829 | $post_id = url_to_postid( $args[1] ); |
| 1830 | |
| 1831 | // If pingbacks aren't open on this post, we'll still check whether this request is part of a potential DDOS, |
| 1832 | // but indicate to the server that pingbacks are indeed closed so we don't include this request in the user's stats, |
| 1833 | // since the user has already done their part by disabling pingbacks. |
| 1834 | $pingbacks_closed = false; |
| 1835 | |
| 1836 | $post = get_post( $post_id ); |
| 1837 | |
| 1838 | if ( ! $post || ! pings_open( $post ) ) { |
| 1839 | $pingbacks_closed = true; |
| 1840 | } |
| 1841 | |
| 1842 | $comment = array( |
| 1843 | 'comment_author_url' => $args[0], |
| 1844 | 'comment_post_ID' => $post_id, |
| 1845 | 'comment_author' => '', |
| 1846 | 'comment_author_email' => '', |
| 1847 | 'comment_content' => '', |
| 1848 | 'comment_type' => 'pingback', |
| 1849 | 'akismet_pre_check' => '1', |
| 1850 | 'comment_pingback_target' => $args[1], |
| 1851 | 'pingbacks_closed' => $pingbacks_closed ? '1' : '0', |
| 1852 | 'is_multicall' => $is_multicall, |
| 1853 | 'multicall_count' => $multicall_count, |
| 1854 | ); |
| 1855 | |
| 1856 | $comment = self::auto_check_comment( $comment, 'xml-rpc' ); |
| 1857 | |
| 1858 | if ( isset( $comment['akismet_result'] ) && 'true' == $comment['akismet_result'] ) { |
| 1859 | // Sad: tightly coupled with the IXR classes. Unfortunately the action provides no context and no way to return anything. |
| 1860 | $server->error( new IXR_Error( 0, 'Invalid discovery target' ) ); |
| 1861 | |
| 1862 | // Also note that if this was part of a multicall, a spam result will prevent the subsequent calls from being executed. |
| 1863 | // This is probably fine, but it raises the bar for what should be acceptable as a false positive. |
| 1864 | } |
| 1865 | } |
| 1866 | } |
| 1867 | |
| 1868 | /** |
| 1869 | * Ensure that we are loading expected scalar values from akismet_as_submitted commentmeta. |
| 1870 | * |
| 1871 | * @param mixed $meta_value |
| 1872 | * @return mixed |
| 1873 | */ |
| 1874 | private static function sanitize_comment_as_submitted( $meta_value ) { |
| 1875 | if ( empty( $meta_value ) ) { |
| 1876 | return $meta_value; |
| 1877 | } |
| 1878 | |
| 1879 | $meta_value = (array) $meta_value; |
| 1880 | |
| 1881 | foreach ( $meta_value as $key => $value ) { |
| 1882 | if ( ! is_scalar( $value ) ) { |
| 1883 | unset( $meta_value[ $key ] ); |
| 1884 | } else { |
| 1885 | // These can change, so they're not explicitly listed in comment_as_submitted_allowed_keys. |
| 1886 | if ( strpos( $key, 'POST_ak_' ) === 0 ) { |
| 1887 | continue; |
| 1888 | } |
| 1889 | |
| 1890 | if ( ! isset( self::$comment_as_submitted_allowed_keys[ $key ] ) ) { |
| 1891 | unset( $meta_value[ $key ] ); |
| 1892 | } |
| 1893 | } |
| 1894 | } |
| 1895 | |
| 1896 | return $meta_value; |
| 1897 | } |
| 1898 | |
| 1899 | public static function predefined_api_key() { |
| 1900 | if ( defined( 'WPCOM_API_KEY' ) ) { |
| 1901 | return true; |
| 1902 | } |
| 1903 | |
| 1904 | return apply_filters( 'akismet_predefined_api_key', false ); |
| 1905 | } |
| 1906 | |
| 1907 | /** |
| 1908 | * Controls the display of a privacy related notice underneath the comment |
| 1909 | * form using the `akismet_comment_form_privacy_notice` option and filter |
| 1910 | * respectively. |
| 1911 | * |
| 1912 | * Default is to not display the notice, leaving the choice to site admins, |
| 1913 | * or integrators. |
| 1914 | */ |
| 1915 | public static function display_comment_form_privacy_notice() { |
| 1916 | if ( 'display' !== apply_filters( 'akismet_comment_form_privacy_notice', get_option( 'akismet_comment_form_privacy_notice', 'hide' ) ) ) { |
| 1917 | return; |
| 1918 | } |
| 1919 | |
| 1920 | echo apply_filters( |
| 1921 | 'akismet_comment_form_privacy_notice_markup', |
| 1922 | '<p class="akismet_comment_form_privacy_notice">' . |
| 1923 | wp_kses( |
| 1924 | sprintf( |
| 1925 | /* translators: %s: Akismet privacy URL */ |
| 1926 | __( 'This site uses Akismet to reduce spam. <a href="%s" target="_blank" rel="nofollow noopener">Learn how your comment data is processed.</a>', 'akismet' ), |
| 1927 | 'https://akismet.com/privacy/' |
| 1928 | ), |
| 1929 | array( |
| 1930 | 'a' => array( |
| 1931 | 'href' => array(), |
| 1932 | 'target' => array(), |
| 1933 | 'rel' => array(), |
| 1934 | ), |
| 1935 | ) |
| 1936 | ) . |
| 1937 | '</p>' |
| 1938 | ); |
| 1939 | } |
| 1940 | |
| 1941 | public static function load_form_js() { |
| 1942 | if ( |
| 1943 | ! is_admin() |
| 1944 | && ( ! function_exists( 'amp_is_request' ) || ! amp_is_request() ) |
| 1945 | && self::get_api_key() |
| 1946 | ) { |
| 1947 | wp_register_script( 'akismet-frontend', plugin_dir_url( __FILE__ ) . '_inc/akismet-frontend.js', array(), filemtime( plugin_dir_path( __FILE__ ) . '_inc/akismet-frontend.js' ), true ); |
| 1948 | wp_enqueue_script( 'akismet-frontend' ); |
| 1949 | } |
| 1950 | } |
| 1951 | |
| 1952 | /** |
| 1953 | * Add the form JavaScript when we detect that a supported form shortcode is being parsed. |
| 1954 | */ |
| 1955 | public static function load_form_js_via_filter( $return_value, $tag, $attr, $m ) { |
| 1956 | if ( in_array( $tag, array( 'contact-form', 'gravityform', 'contact-form-7', 'formidable', 'fluentform' ) ) ) { |
| 1957 | self::load_form_js(); |
| 1958 | } |
| 1959 | |
| 1960 | return $return_value; |
| 1961 | } |
| 1962 | |
| 1963 | /** |
| 1964 | * Was the last entry in the comment history created by Akismet? |
| 1965 | * |
| 1966 | * @param int $comment_id The ID of the comment. |
| 1967 | * @return bool |
| 1968 | */ |
| 1969 | public static function last_comment_status_change_came_from_akismet( $comment_id ) { |
| 1970 | $history = self::get_comment_history( $comment_id ); |
| 1971 | |
| 1972 | if ( empty( $history ) ) { |
| 1973 | return false; |
| 1974 | } |
| 1975 | |
| 1976 | $most_recent_history_event = $history[0]; |
| 1977 | |
| 1978 | if ( ! isset( $most_recent_history_event['event'] ) ) { |
| 1979 | return false; |
| 1980 | } |
| 1981 | |
| 1982 | $akismet_history_events = array( |
| 1983 | 'check-error', |
| 1984 | 'cron-retry-ham', |
| 1985 | 'cron-retry-spam', |
| 1986 | 'check-ham', |
| 1987 | 'check-spam', |
| 1988 | 'recheck-error', |
| 1989 | 'recheck-ham', |
| 1990 | 'recheck-spam', |
| 1991 | 'webhook-ham', |
| 1992 | 'webhook-spam', |
| 1993 | ); |
| 1994 | |
| 1995 | if ( in_array( $most_recent_history_event['event'], $akismet_history_events ) ) { |
| 1996 | return true; |
| 1997 | } |
| 1998 | |
| 1999 | return false; |
| 2000 | } |
| 2001 | |
| 2002 | /** |
| 2003 | * Check the comment history to find out what the most recent comment-check |
| 2004 | * response said about this comment. |
| 2005 | * |
| 2006 | * This value is then included in submit-ham and submit-spam requests to allow |
| 2007 | * us to know whether the comment is actually a missed spam/ham or if it's |
| 2008 | * just being reclassified after either never being checked or being mistakenly |
| 2009 | * marked as ham/spam. |
| 2010 | * |
| 2011 | * @param int $comment_id The comment ID. |
| 2012 | * @return string 'true', 'false', or an empty string if we don't have a record |
| 2013 | * of comment-check being called. |
| 2014 | */ |
| 2015 | public static function last_comment_check_response( $comment_id ) { |
| 2016 | $history = self::get_comment_history( $comment_id ); |
| 2017 | |
| 2018 | if ( $history ) { |
| 2019 | $history = array_reverse( $history ); |
| 2020 | |
| 2021 | foreach ( $history as $akismet_history_entry ) { |
| 2022 | // We've always been consistent in how history entries are formatted |
| 2023 | // but comment_meta is writable by everyone, so don't assume that all |
| 2024 | // entries contain the expected parts. |
| 2025 | |
| 2026 | if ( ! is_array( $akismet_history_entry ) ) { |
| 2027 | continue; |
| 2028 | } |
| 2029 | |
| 2030 | if ( ! isset( $akismet_history_entry['event'] ) ) { |
| 2031 | continue; |
| 2032 | } |
| 2033 | |
| 2034 | if ( in_array( |
| 2035 | $akismet_history_entry['event'], |
| 2036 | array( |
| 2037 | 'recheck-spam', |
| 2038 | 'check-spam', |
| 2039 | 'cron-retry-spam', |
| 2040 | 'webhook-spam', |
| 2041 | 'webhook-spam-noaction', |
| 2042 | ), |
| 2043 | true |
| 2044 | ) ) { |
| 2045 | return 'true'; |
| 2046 | } elseif ( in_array( |
| 2047 | $akismet_history_entry['event'], |
| 2048 | array( |
| 2049 | 'recheck-ham', |
| 2050 | 'check-ham', |
| 2051 | 'cron-retry-ham', |
| 2052 | 'webhook-ham', |
| 2053 | 'webhook-ham-noaction', |
| 2054 | ), |
| 2055 | true |
| 2056 | ) ) { |
| 2057 | return 'false'; |
| 2058 | } |
| 2059 | } |
| 2060 | } |
| 2061 | |
| 2062 | return ''; |
| 2063 | } |
| 2064 | } |
| 2065 |