admin
2 weeks ago
cli
2 weeks ago
lib
1 month ago
captcha.php
2 weeks ago
cloudsecure-wp.php
6 days ago
common.php
4 months ago
config.php
2 years ago
disable-access-system-file.php
1 month ago
disable-author-query.php
2 weeks ago
disable-login.php
1 month ago
disable-restapi.php
2 weeks ago
disable-xmlrpc.php
1 year ago
htaccess.php
4 months ago
login-log.php
1 month ago
login-notification.php
3 months ago
protect-rest-batch.php
1 month ago
rename-login-page.php
4 months ago
restrict-admin-page.php
3 months ago
server-error-notification.php
3 months ago
two-factor-authentication.php
6 days ago
unify-messages.php
2 years ago
update-notice.php
9 months ago
waf-engine.php
6 days ago
waf.php
1 month ago
waf-engine.php
1636 lines
| 1 | <?php |
| 2 | |
| 3 | if ( ! defined( 'ABSPATH' ) ) { |
| 4 | exit; |
| 5 | } |
| 6 | |
| 7 | class CloudSecureWP_Waf_Engine extends CloudSecureWP_Common { |
| 8 | protected const VARIABLE_ARGS_GET = 'args_get'; |
| 9 | protected const VARIABLE_ARGS_GET_NAMES = 'args_get_names'; |
| 10 | protected const VARIABLE_ARGS_POST = 'args_post'; |
| 11 | protected const VARIABLE_ARGS_POST_NAMES = 'args_post_names'; |
| 12 | protected const VARIABLE_REQUEST_COOKIES = 'request_cookies'; |
| 13 | protected const VARIABLE_REQUEST_COOKIES_NAMES = 'request_cookies_names'; |
| 14 | protected const VARIABLE_REQUEST_HEADERS = 'request_headers'; |
| 15 | protected const VARIABLE_REQUEST_FILENAME = 'request_filename'; |
| 16 | protected const VARIABLE_XML = 'xml'; |
| 17 | private $parsed_xml; |
| 18 | private $request_body = null; |
| 19 | private $excluded_user_by_cookie = null; |
| 20 | |
| 21 | |
| 22 | |
| 23 | function __construct( array $info ) { |
| 24 | parent::__construct( $info ); |
| 25 | |
| 26 | } |
| 27 | |
| 28 | |
| 29 | /** |
| 30 | * リクエストボディ（php://input）を取得する |
| 31 | * 同一リクエスト� |
| 32 | でボディは不変のため、初回読み込み時にキャッシュして再読み込みを防ぐ |
| 33 | * |
| 34 | * @return string |
| 35 | */ |
| 36 | private function get_request_body(): string { |
| 37 | if ( null === $this->request_body ) { |
| 38 | $this->request_body = (string) file_get_contents( 'php://input' ); |
| 39 | } |
| 40 | |
| 41 | return $this->request_body; |
| 42 | } |
| 43 | |
| 44 | |
| 45 | /** |
| 46 | * XML パース時のコールバック関数 |
| 47 | * |
| 48 | * @return void |
| 49 | */ |
| 50 | public function char( $parser, $data ): void { |
| 51 | $this->parsed_xml .= $data; |
| 52 | } |
| 53 | |
| 54 | |
| 55 | /** |
| 56 | * XML パース |
| 57 | * |
| 58 | * @return string |
| 59 | */ |
| 60 | public function xml_parser(): string { |
| 61 | $request_body = $this->get_request_body(); |
| 62 | $this->parsed_xml = ''; |
| 63 | |
| 64 | if ( ! empty( $request_body ) ) { |
| 65 | $parser = xml_parser_create(); |
| 66 | |
| 67 | xml_set_object( $parser, $this ); |
| 68 | xml_set_character_data_handler( $parser, 'char' ); |
| 69 | |
| 70 | if ( ! xml_parse( $parser, $request_body ) ) { |
| 71 | $this->parsed_xml .= 'xml_parse_failed'; |
| 72 | }; |
| 73 | |
| 74 | xml_parser_free( $parser ); |
| 75 | } |
| 76 | |
| 77 | return $this->parsed_xml; |
| 78 | } |
| 79 | |
| 80 | |
| 81 | /** |
| 82 | * ARGS_GET、ARGS_GET_NAMES 用 GETデータ取得 |
| 83 | * |
| 84 | * @return array |
| 85 | */ |
| 86 | public function get_request_args_get_data(): array { |
| 87 | if ( ! empty( $_GET ) ) { |
| 88 | return $_GET; |
| 89 | } |
| 90 | |
| 91 | return array(); |
| 92 | } |
| 93 | |
| 94 | |
| 95 | /** |
| 96 | * ARGS_POST、ARGS_POST_NAMES 用 POSTデータ取得 |
| 97 | * |
| 98 | * @return array |
| 99 | */ |
| 100 | public function get_request_args_post_data(): array { |
| 101 | if ( ! empty( $_POST ) ) { |
| 102 | return $_POST; |
| 103 | } |
| 104 | |
| 105 | $post_data = $this->get_request_body(); |
| 106 | |
| 107 | if ( ! empty( $post_data ) ) { |
| 108 | $json_decoded_post_data = json_decode( $post_data, true ); |
| 109 | |
| 110 | // nullでなければjsonとなる |
| 111 | if ( is_array( $json_decoded_post_data ) ) { |
| 112 | return $json_decoded_post_data; |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | return array(); |
| 117 | } |
| 118 | |
| 119 | |
| 120 | /** |
| 121 | * Cookie� |
| 122 | 報取得 |
| 123 | * |
| 124 | * @return array |
| 125 | */ |
| 126 | public function get_request_cookies(): array { |
| 127 | if ( ! empty( $_COOKIE ) ) { |
| 128 | return $_COOKIE; |
| 129 | } else { |
| 130 | return array(); |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | |
| 135 | /** |
| 136 | * リクエスト� |
| 137 | 報取得 |
| 138 | * 取得・パースできなかったものに関しては空白で返す |
| 139 | * |
| 140 | * @return array |
| 141 | */ |
| 142 | public function get_request_items(): array { |
| 143 | $request_items = array( |
| 144 | 'access_at' => current_time( 'mysql' ), |
| 145 | 'ip' => $this->get_client_ip(), |
| 146 | self::VARIABLE_XML => $this->xml_parser(), |
| 147 | self::VARIABLE_REQUEST_FILENAME => $this->get_request_uri(), |
| 148 | self::VARIABLE_REQUEST_HEADERS => $this->get_http_request_headers(), |
| 149 | self::VARIABLE_ARGS_GET => $this->get_request_args_get_data(), |
| 150 | self::VARIABLE_ARGS_POST => $this->get_request_args_post_data(), |
| 151 | self::VARIABLE_REQUEST_COOKIES => $this->get_request_cookies(), |
| 152 | ); |
| 153 | |
| 154 | return $request_items; |
| 155 | } |
| 156 | |
| 157 | |
| 158 | /** |
| 159 | * ルールの設定を参考に1つのリクエスト� |
| 160 | 報に対して複数の変換を行う処理 |
| 161 | * |
| 162 | * @param array $transformations |
| 163 | * @param string $request_item |
| 164 | * @return string |
| 165 | */ |
| 166 | public function transform( $transformations, $request_item ): string { |
| 167 | $converted_request_item = $request_item; |
| 168 | |
| 169 | foreach ( $transformations as $transformation ) { |
| 170 | switch ( $transformation ) { |
| 171 | case 'htmlentitydecode': |
| 172 | $converted_request_item = html_entity_decode( $converted_request_item, ENT_QUOTES, 'utf-8' ); |
| 173 | break; |
| 174 | case 'lowercase': |
| 175 | $converted_request_item = strtolower( $converted_request_item ); |
| 176 | break; |
| 177 | case 'replacecomments': |
| 178 | $converted_request_item = preg_replace( '/(\/\*.*?\*\/|\/\*.*(?!\*\/).*)/s', ' ', $converted_request_item ); |
| 179 | break; |
| 180 | case 'compresswhitespace': |
| 181 | $converted_request_item = preg_replace( '/(\s|\xa0)/s', ' ', $converted_request_item ); |
| 182 | $converted_request_item = preg_replace( '/\s{2,}/s', ' ', $converted_request_item ); |
| 183 | break; |
| 184 | default: |
| 185 | $converted_request_item = '変換に失敗しました'; |
| 186 | break 2; |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | return $converted_request_item; |
| 191 | } |
| 192 | |
| 193 | |
| 194 | /** |
| 195 | * LocationMatch設定によるルールのスキップ用関数 |
| 196 | * |
| 197 | * @param array $locationmatch_rules |
| 198 | * @param string $request_uri |
| 199 | * @return array |
| 200 | */ |
| 201 | public function locationmatch_remove_rules( $locationmatch_rules, $request_uri ): array { |
| 202 | $locationmatch_removed_rule_ids = array(); |
| 203 | |
| 204 | foreach ( $locationmatch_rules as $locationmatch_rule ) { |
| 205 | if ( preg_match( '/' . $locationmatch_rule['path'] . '/', $request_uri ) ) { |
| 206 | $locationmatch_removed_rule_ids = array_merge( $locationmatch_removed_rule_ids, $locationmatch_rule['remove_rule_ids'] ); |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | $locationmatch_removed_rule_ids = array_unique( $locationmatch_removed_rule_ids ); |
| 211 | |
| 212 | return $locationmatch_removed_rule_ids; |
| 213 | } |
| 214 | |
| 215 | |
| 216 | /** |
| 217 | * skip表記の存在確認 |
| 218 | * |
| 219 | * @param int $skip |
| 220 | * @return int |
| 221 | */ |
| 222 | public function check_skip( $skip ): int { |
| 223 | if ( $skip !== 0 ) { |
| 224 | return $skip; |
| 225 | } else { |
| 226 | return 0; |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | |
| 231 | /** |
| 232 | * skipafter表記の存在確認 |
| 233 | * |
| 234 | * @param string $skipafter |
| 235 | * @return string |
| 236 | */ |
| 237 | public function check_skipafter( $skipafter ): string { |
| 238 | if ( ! empty( $skipafter ) ) { |
| 239 | return $skipafter; |
| 240 | } else { |
| 241 | return ''; |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | |
| 246 | /** |
| 247 | * skipが有効か判定 |
| 248 | * |
| 249 | * @param int $skip |
| 250 | * @return bool |
| 251 | */ |
| 252 | public function is_skip_enabled( $skip ): bool { |
| 253 | if ( 0 < $skip ) { |
| 254 | return true; |
| 255 | } else { |
| 256 | return false; |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | |
| 261 | /** |
| 262 | * skipafterが有効か判定 |
| 263 | * |
| 264 | * @param string $skipafter |
| 265 | * @return bool |
| 266 | */ |
| 267 | public function is_skipafter_enabled( $skipafter ): bool { |
| 268 | if ( ! empty( $skipafter ) ) { |
| 269 | return true; |
| 270 | } else { |
| 271 | return false; |
| 272 | } |
| 273 | } |
| 274 | |
| 275 | /** |
| 276 | * ルールが終了したか判定 |
| 277 | * |
| 278 | * @param string $chain |
| 279 | * @param string $skip |
| 280 | * @param string $skipafter |
| 281 | * @return bool |
| 282 | */ |
| 283 | public function is_rule_finished( $chain, $skip, $skipafter ): bool { |
| 284 | if ( ! empty( $chain ) || $this->is_skip_enabled( $skip ) || $this->is_skipafter_enabled( $skipafter ) ) { |
| 285 | return false; |
| 286 | } else { |
| 287 | return true; |
| 288 | } |
| 289 | } |
| 290 | |
| 291 | |
| 292 | /** |
| 293 | * ルール� |
| 294 | に除外の表記があるか確認 |
| 295 | * |
| 296 | * @param array $remove_variables |
| 297 | * @param string $variable |
| 298 | * @param string $request_item |
| 299 | * @return bool |
| 300 | */ |
| 301 | public function is_remove_variables( $remove_variables, $variable, $request_item ): bool { |
| 302 | if ( ! empty( $remove_variables ) ) { |
| 303 | foreach ( $remove_variables as $remove_variable => $remove_values ) { |
| 304 | if ( $remove_variable === $variable ) { |
| 305 | foreach ( $remove_values as $remove_value ) { |
| 306 | |
| 307 | // REQUEST_HEADERSの場合は大文字小文字関係なく判定する |
| 308 | if ( $variable === self::VARIABLE_REQUEST_HEADERS ) { |
| 309 | if ( preg_match( '/' . $remove_value . '/i', $request_item ) ) { |
| 310 | return true; |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | if ( preg_match( '/^\/.+\/$/', $remove_value ) ) { |
| 315 | // 除外の値が部分一致(/で囲まれているもの)の場合 |
| 316 | if ( preg_match( $remove_value . 's', $request_item ) ) { |
| 317 | return true; |
| 318 | } |
| 319 | } else { |
| 320 | // 除外の値が完� |
| 321 | �一致の場合 |
| 322 | if ( $remove_value === $request_item ) { |
| 323 | return true; |
| 324 | } |
| 325 | } |
| 326 | } |
| 327 | } |
| 328 | } |
| 329 | } |
| 330 | |
| 331 | return false; |
| 332 | } |
| 333 | |
| 334 | /** |
| 335 | * マッチした結果を� |
| 336 | �列に格納 |
| 337 | * |
| 338 | * @param array $rule |
| 339 | * @param array $request_items |
| 340 | * @param string $variable |
| 341 | * @param string $match_string |
| 342 | * @return array |
| 343 | */ |
| 344 | public function get_match_results( $rule, $request_items, $variable, $match_string ): array { |
| 345 | |
| 346 | if ( isset( $_SERVER['HTTP_HOST'] ) && isset( $_SERVER['REQUEST_URI'] ) ) { |
| 347 | $complete_url = ( empty( $_SERVER['HTTPS'] ) ? 'http://' : 'https://' ) |
| 348 | . sanitize_text_field( wp_unslash( $_SERVER['HTTP_HOST'] ) ) |
| 349 | . esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ) ); |
| 350 | } else { |
| 351 | $complete_url = ''; |
| 352 | } |
| 353 | |
| 354 | $match_results = array( |
| 355 | 'id' => $rule['id'], |
| 356 | 'attack' => $rule['attack'], |
| 357 | 'variable' => $variable, |
| 358 | 'matched' => $match_string, |
| 359 | 'ip' => $request_items['ip'], |
| 360 | 'access_at' => $request_items['access_at'], |
| 361 | 'url' => $complete_url, |
| 362 | ); |
| 363 | |
| 364 | return $match_results; |
| 365 | } |
| 366 | |
| 367 | |
| 368 | /** |
| 369 | * chain_itemsの取得 |
| 370 | * |
| 371 | * @param array $rule |
| 372 | * @return array |
| 373 | */ |
| 374 | public function get_chain_items( $rule ): array { |
| 375 | $chain_items = array( |
| 376 | 'id' => $rule['id'], |
| 377 | 'attack' => $rule['attack'], |
| 378 | 'skip' => $rule['skip'], |
| 379 | 'skipafter' => $rule['skipafter'], |
| 380 | ); |
| 381 | |
| 382 | return $chain_items; |
| 383 | } |
| 384 | |
| 385 | |
| 386 | /** |
| 387 | * マッチしたルールの設定、結果を取得 |
| 388 | * |
| 389 | * @param array $waf_rule |
| 390 | * @param array $request_items |
| 391 | * @param string $variable |
| 392 | * @param array $chain_items |
| 393 | * @param array $match_string |
| 394 | * @return array |
| 395 | */ |
| 396 | public function get_rule_settings_and_results( $waf_rule, $request_items, $variable, $chain_items, $match_string ): array { |
| 397 | $results = array( |
| 398 | 'is_matched' => true, |
| 399 | 'chain_items' => array(), |
| 400 | 'skip' => 0, |
| 401 | 'skipafter' => '', |
| 402 | 'match_results' => array(), |
| 403 | ); |
| 404 | |
| 405 | // 前ルールからchainの設定を引き継いでいるか確認 |
| 406 | if ( ! empty( $chain_items ) ) { |
| 407 | if ( $waf_rule['attack'] === '' && $this->is_rule_finished( $waf_rule['chain'], $waf_rule['skip'], $waf_rule['skipafter'] ) ) { |
| 408 | // ルールの終了判定がtrueではあるが、攻撃種別が設定されていない場合はマッチ用のルールではないのでマッチしていないと判定 |
| 409 | $results['is_matched'] = false; |
| 410 | |
| 411 | } elseif ( $this->is_rule_finished( $waf_rule['chain'], $chain_items['skip'], $chain_items['skipafter'] ) ) { |
| 412 | $results['match_results'] = $this->get_match_results( $chain_items, $request_items, $variable, $match_string ); |
| 413 | |
| 414 | } elseif ( $waf_rule['chain'] ) { |
| 415 | // 現在のルールにchainの設定がある場合 |
| 416 | $results['chain_items'] = $chain_items; |
| 417 | |
| 418 | } else { |
| 419 | $results['skip'] = $this->check_skip( $chain_items['skip'] ); |
| 420 | $results['skipafter'] = $this->check_skipafter( $chain_items['skipafter'] ); |
| 421 | } |
| 422 | } else { |
| 423 | if ( $waf_rule['attack'] === '' && $this->is_rule_finished( $waf_rule['chain'], $waf_rule['skip'], $waf_rule['skipafter'] ) ) { |
| 424 | // ルールの終了判定がtrueではあるが、攻撃種別が設定されていない場合はマッチ用のルールではないのでマッチしていないと判定 |
| 425 | $results['is_matched'] = false; |
| 426 | |
| 427 | } elseif ( $this->is_rule_finished( $waf_rule['chain'], $waf_rule['skip'], $waf_rule['skipafter'] ) ) { |
| 428 | $results['match_results'] = $this->get_match_results( $waf_rule, $request_items, $variable, $match_string ); |
| 429 | |
| 430 | } elseif ( $waf_rule['chain'] ) { |
| 431 | // 現在のルールにchainの設定がある場合 |
| 432 | $results['chain_items'] = $this->get_chain_items( $waf_rule ); |
| 433 | |
| 434 | } else { |
| 435 | $results['skip'] = $this->check_skip( $waf_rule['skip'] ); |
| 436 | $results['skipafter'] = $this->check_skipafter( $waf_rule['skipafter'] ); |
| 437 | } |
| 438 | } |
| 439 | return $results; |
| 440 | } |
| 441 | |
| 442 | /** |
| 443 | * ネストした� |
| 444 | �列をパース |
| 445 | * |
| 446 | * @param string $name |
| 447 | * @param array $array |
| 448 | */ |
| 449 | public function parse_array( $name, $array ) { |
| 450 | $parsed_array = array(); |
| 451 | |
| 452 | foreach ( $array as $key => $val ) { |
| 453 | if ( is_array( $val ) ) { |
| 454 | $tmp_name = $name . '[' . $key . ']'; |
| 455 | $tmp_parsed_array = $this->parse_array( $tmp_name, $val ); |
| 456 | $parsed_array = array_merge( $parsed_array, $tmp_parsed_array ); |
| 457 | |
| 458 | } else { |
| 459 | $parsed_array_key = $name . '[' . $key . ']'; |
| 460 | $parsed_array[ $parsed_array_key ] = $val ?? ''; |
| 461 | } |
| 462 | } |
| 463 | return $parsed_array; |
| 464 | } |
| 465 | |
| 466 | |
| 467 | /** |
| 468 | * リクエスト� |
| 469 | 報� |
| 470 | �列を使用するルール判定 |
| 471 | * |
| 472 | * @param array $waf_rule |
| 473 | * @param array $request_items |
| 474 | * @param string $variable |
| 475 | * @param array $chain_items |
| 476 | * @return array |
| 477 | */ |
| 478 | public function check_request_item_array( $waf_rule, $request_items, $variable, $chain_items ) { |
| 479 | $results = array( |
| 480 | 'is_matched' => false, |
| 481 | 'chain_items' => array(), |
| 482 | 'skip' => 0, |
| 483 | 'skipafter' => '', |
| 484 | 'match_results' => array(), |
| 485 | 'has_backtrack_error' => false, |
| 486 | 'backtrack_key' => '', |
| 487 | ); |
| 488 | |
| 489 | $get_request_item_variable = preg_replace( '/_names/', '', $variable ); |
| 490 | |
| 491 | if ( ! isset( $get_request_item_variable ) ) { |
| 492 | return $results; |
| 493 | } |
| 494 | |
| 495 | foreach ( $request_items[ $get_request_item_variable ] as $key => $val ) { |
| 496 | |
| 497 | if ( ! isset( $val ) ) { |
| 498 | $val = ''; |
| 499 | } |
| 500 | |
| 501 | switch ( $variable ) { |
| 502 | case self::VARIABLE_ARGS_GET: |
| 503 | case self::VARIABLE_ARGS_POST: |
| 504 | case self::VARIABLE_REQUEST_COOKIES: |
| 505 | case self::VARIABLE_REQUEST_HEADERS: |
| 506 | if ( is_array( $val ) ) { |
| 507 | $parsed_vals = $this->parse_array( $key, $val ); |
| 508 | |
| 509 | foreach ( $parsed_vals as $key => $val ) { |
| 510 | $checked_request_item = $this->check_request_item_value( $waf_rule, $key, $val, $variable ); |
| 511 | |
| 512 | if ( $checked_request_item['has_backtrack_error'] ) { |
| 513 | $results['has_backtrack_error'] = true; |
| 514 | $results['backtrack_key'] = $checked_request_item['backtrack_key'] ?? ''; |
| 515 | } |
| 516 | |
| 517 | if ( $checked_request_item['is_matched'] ) { |
| 518 | $has_bt = $results['has_backtrack_error']; |
| 519 | $has_btk = $results['backtrack_key']; |
| 520 | $results = $this->get_rule_settings_and_results( $waf_rule, $request_items, $variable, $chain_items, $checked_request_item['match_string'] ); |
| 521 | |
| 522 | $results['has_backtrack_error'] = $has_bt; |
| 523 | $results['backtrack_key'] = $has_btk; |
| 524 | break; |
| 525 | } |
| 526 | } |
| 527 | } else { |
| 528 | $checked_request_item = $this->check_request_item_value( $waf_rule, $key, $val, $variable ); |
| 529 | } |
| 530 | |
| 531 | break; |
| 532 | |
| 533 | case self::VARIABLE_ARGS_GET_NAMES: |
| 534 | case self::VARIABLE_ARGS_POST_NAMES: |
| 535 | case self::VARIABLE_REQUEST_COOKIES_NAMES: |
| 536 | $checked_request_item = $this->check_request_item_key( $waf_rule, $key, $variable ); |
| 537 | break; |
| 538 | } |
| 539 | |
| 540 | if ( isset( $checked_request_item['has_backtrack_error'] ) && $checked_request_item['has_backtrack_error'] ) { |
| 541 | $results['has_backtrack_error'] = true; |
| 542 | $results['backtrack_key'] = $checked_request_item['backtrack_key'] ?? ''; |
| 543 | } |
| 544 | |
| 545 | if ( $checked_request_item['is_matched'] ) { |
| 546 | $has_bt = $results['has_backtrack_error']; |
| 547 | $has_btk = $results['backtrack_key']; |
| 548 | $results = $this->get_rule_settings_and_results( $waf_rule, $request_items, $variable, $chain_items, $checked_request_item['match_string'] ); |
| 549 | |
| 550 | $results['has_backtrack_error'] = $has_bt; |
| 551 | $results['backtrack_key'] = $has_btk; |
| 552 | |
| 553 | break; |
| 554 | } |
| 555 | } |
| 556 | return $results; |
| 557 | } |
| 558 | |
| 559 | |
| 560 | |
| 561 | /** |
| 562 | * リクエスト� |
| 563 | 報� |
| 564 | �列のうちvalueの値を使用するルール判定 |
| 565 | * |
| 566 | * @param array $waf_rule |
| 567 | * @param string $request_items_key |
| 568 | * @param string $request_items_value |
| 569 | * @param string $variable |
| 570 | * @return array |
| 571 | */ |
| 572 | public function check_request_item_value( $waf_rule, $request_items_key, $request_items_value, $variable ): array { |
| 573 | $results = array( |
| 574 | 'is_matched' => false, |
| 575 | 'match_string' => '', |
| 576 | 'has_backtrack_error' => false, |
| 577 | 'backtrack_key' => '', |
| 578 | ); |
| 579 | $matches = array(); |
| 580 | |
| 581 | // リクエスト� |
| 582 | 報� |
| 583 | �列のkeyの変換 |
| 584 | $tmp_key = $this->transform( $waf_rule['transformations'], $request_items_key ); |
| 585 | |
| 586 | // 除外対象のキーは検査自体を行わない |
| 587 | // preg_matchを� |
| 588 | �に実行するとバックトラック� |
| 589 | 過時に正常な操作が誤って遮断されるため、除外判定を検査前に行う |
| 590 | if ( true === $this->is_remove_variables( $waf_rule['remove_variables'], $variable, $tmp_key ) ) { |
| 591 | return $results; |
| 592 | } |
| 593 | |
| 594 | // リクエスト� |
| 595 | 報� |
| 596 | �列のvalueの変換 |
| 597 | $tmp_val = $this->transform( $waf_rule['transformations'], $request_items_value ); |
| 598 | |
| 599 | $preg_result = preg_match( '/' . $waf_rule['regex_pattern'] . '/s', $tmp_val, $matches ); |
| 600 | |
| 601 | if ( $preg_result === false ) { |
| 602 | // preg_matchが完走しなかった場合（バックトラック/JITスタック/再帰上限/不正UTF-8等）は検査失敗として扱う |
| 603 | $results['has_backtrack_error'] = true; |
| 604 | $results['backtrack_key'] = $request_items_key; |
| 605 | } elseif ( $preg_result === 1 ) { |
| 606 | if ( ! empty( $matches ) ) { |
| 607 | // 除外判定は検査前に実施済みのためマッチしたと判定 |
| 608 | $results['is_matched'] = true; |
| 609 | $results['match_string'] = $matches[0]; |
| 610 | } |
| 611 | } |
| 612 | |
| 613 | return $results; |
| 614 | } |
| 615 | |
| 616 | |
| 617 | /** |
| 618 | * リクエスト� |
| 619 | 報� |
| 620 | �列のうちkeyの値を使用するルール判定 |
| 621 | * |
| 622 | * @param array $waf_rule |
| 623 | * @param string $request_items_key |
| 624 | * @param string $variable |
| 625 | * @return array |
| 626 | */ |
| 627 | public function check_request_item_key( $waf_rule, $request_items_key, $variable ): array { |
| 628 | $results = array( |
| 629 | 'is_matched' => false, |
| 630 | 'match_string' => '', |
| 631 | 'has_backtrack_error' => false, |
| 632 | 'backtrack_key' => '', |
| 633 | ); |
| 634 | $matches = array(); |
| 635 | |
| 636 | // リクエスト� |
| 637 | 報� |
| 638 | �列のkeyの変換 |
| 639 | $tmp_key = $this->transform( $waf_rule['transformations'], $request_items_key ); |
| 640 | |
| 641 | // 除外対象のキーは検査自体を行わない |
| 642 | // preg_matchを� |
| 643 | �に実行するとバックトラック� |
| 644 | 過時に正常な操作が誤って遮断されるため、除外判定を検査前に行う |
| 645 | if ( true === $this->is_remove_variables( $waf_rule['remove_variables'], $variable, $tmp_key ) ) { |
| 646 | return $results; |
| 647 | } |
| 648 | |
| 649 | $preg_result = preg_match( '/' . $waf_rule['regex_pattern'] . '/s', $tmp_key, $matches ); |
| 650 | |
| 651 | if ( $preg_result === false ) { |
| 652 | // preg_matchが完走しなかった場合（バックトラック/JITスタック/再帰上限/不正UTF-8等）は検査失敗として扱う |
| 653 | $results['has_backtrack_error'] = true; |
| 654 | $results['backtrack_key'] = $request_items_key; |
| 655 | } elseif ( $preg_result === 1 ) { |
| 656 | if ( ! empty( $matches ) ) { |
| 657 | // 除外判定は検査前に実施済みのためマッチしたと判定 |
| 658 | $results['is_matched'] = true; |
| 659 | $results['match_string'] = $matches[0]; |
| 660 | } |
| 661 | } |
| 662 | |
| 663 | return $results; |
| 664 | } |
| 665 | |
| 666 | |
| 667 | /** |
| 668 | * リクエスト� |
| 669 | 報� |
| 670 | �列のうち文字列の値を使用するルール判定 |
| 671 | * |
| 672 | * @param array $waf_rule |
| 673 | * @param array $request_items |
| 674 | * @param string $variable |
| 675 | * @param array $chain_items |
| 676 | * @return array |
| 677 | */ |
| 678 | public function check_request_item_strings( $waf_rule, $request_items, $variable, $chain_items ): array { |
| 679 | $results = array( |
| 680 | 'is_matched' => false, |
| 681 | 'chain_items' => array(), |
| 682 | 'skip' => 0, |
| 683 | 'skipafter' => '', |
| 684 | 'match_results' => array(), |
| 685 | 'has_backtrack_error' => false, |
| 686 | ); |
| 687 | |
| 688 | if ( empty( $request_items[ $variable ] ) ) { |
| 689 | return $results; |
| 690 | } |
| 691 | |
| 692 | if ( $variable === self::VARIABLE_XML ) { |
| 693 | if ( $request_items[ self::VARIABLE_XML ] === 'xml_parse_failed' ) { |
| 694 | return $results; |
| 695 | } else { |
| 696 | $request_items[ self::VARIABLE_XML ] = str_replace( 'xml_parse_failed', '', $request_items[ self::VARIABLE_XML ] ); |
| 697 | } |
| 698 | } |
| 699 | |
| 700 | // リクエスト� |
| 701 | 報の変換 |
| 702 | $tmp_string = $this->transform( $waf_rule['transformations'], $request_items[ $variable ] ); |
| 703 | |
| 704 | // REQUEST_FILENAMEに関しては、urlデコード済の値も判定し、マッチしたら結果を出力 |
| 705 | if ( $variable === self::VARIABLE_REQUEST_FILENAME ) { |
| 706 | // リクエスト� |
| 707 | 報のデコード&変換 |
| 708 | $request_items_urldecoded = urldecode( $request_items[ $variable ] ); |
| 709 | $tmp_urldecoded = $this->transform( $waf_rule['transformations'], $request_items_urldecoded ); |
| 710 | |
| 711 | $preg_result = preg_match( '/' . $waf_rule['regex_pattern'] . '/s', $tmp_urldecoded, $matches ); |
| 712 | |
| 713 | if ( $preg_result === false ) { |
| 714 | // preg_matchが完走しなかった場合（バックトラック/JITスタック/再帰上限/不正UTF-8等）は検査失敗として扱う |
| 715 | $results['has_backtrack_error'] = true; |
| 716 | } elseif ( $preg_result === 1 ) { |
| 717 | if ( ! empty( $matches ) ) { |
| 718 | $results = $this->get_rule_settings_and_results( $waf_rule, $request_items, $variable, $chain_items, $matches[0] ); |
| 719 | return $results; |
| 720 | } |
| 721 | } |
| 722 | } |
| 723 | |
| 724 | $preg_result = preg_match( '/' . $waf_rule['regex_pattern'] . '/s', $tmp_string, $matches ); |
| 725 | |
| 726 | if ( $preg_result === false ) { |
| 727 | // preg_matchが完走しなかった場合（バックトラック/JITスタック/再帰上限/不正UTF-8等）は検査失敗として扱う |
| 728 | $results['has_backtrack_error'] = true; |
| 729 | return $results; |
| 730 | } |
| 731 | |
| 732 | if ( empty( $matches ) ) { |
| 733 | // 正規表現パターンにマッチしなければ終了 |
| 734 | return $results; |
| 735 | } |
| 736 | |
| 737 | $has_bt = $results['has_backtrack_error']; |
| 738 | $results = $this->get_rule_settings_and_results( $waf_rule, $request_items, $variable, $chain_items, $matches[0] ); |
| 739 | |
| 740 | $results['has_backtrack_error'] = $has_bt; |
| 741 | |
| 742 | return $results; |
| 743 | } |
| 744 | |
| 745 | |
| 746 | /** |
| 747 | * REST APIエンドポイントを取得（パーマリンク設定に依存しない） |
| 748 | * |
| 749 | * @param array $request_items |
| 750 | * @return string |
| 751 | */ |
| 752 | public function get_rest_endpoint( $request_items ): string { |
| 753 | // パーマリンクが「基本」の場合はrest_routeパラメータにエンドポイントが含まれる |
| 754 | // GETとPOSTの両方にrest_routeが含まれる場合は404エラーになる |
| 755 | if ( isset( $request_items['args_get']['rest_route'] ) && is_string( $request_items['args_get']['rest_route'] ) ) { |
| 756 | return $request_items['args_get']['rest_route']; |
| 757 | } |
| 758 | if ( isset( $request_items['args_post']['rest_route'] ) && is_string( $request_items['args_post']['rest_route'] ) ) { |
| 759 | return $request_items['args_post']['rest_route']; |
| 760 | } |
| 761 | |
| 762 | // その他のパーマリンク設定の場合はrequest_filenameを使用 |
| 763 | return $request_items['request_filename']; |
| 764 | } |
| 765 | |
| 766 | |
| 767 | /** |
| 768 | * AND判定の� |
| 769 | �通ロジック |
| 770 | * |
| 771 | * 存在するチャネル（args_get / args_post）の値がすべて $predicate を満たし、かつ最低1つのチャネルに存在する場合のみ true。 |
| 772 | * |
| 773 | * @param array $request_items |
| 774 | * @param string $key |
| 775 | * @param callable $predicate function( mixed $value ): bool 1チャネルの値が条件を満たすか |
| 776 | * @return bool |
| 777 | */ |
| 778 | private function args_value_all_match( array $request_items, string $key, callable $predicate ): bool { |
| 779 | $args_get = $request_items['args_get'] ?? array(); |
| 780 | $args_post = $request_items['args_post'] ?? array(); |
| 781 | |
| 782 | $in_args_get = array_key_exists( $key, $args_get ); |
| 783 | $in_args_post = array_key_exists( $key, $args_post ); |
| 784 | |
| 785 | if ( ! $in_args_get && ! $in_args_post ) { |
| 786 | return false; |
| 787 | } |
| 788 | if ( $in_args_get && ! $predicate( $args_get[ $key ] ) ) { |
| 789 | return false; |
| 790 | } |
| 791 | if ( $in_args_post && ! $predicate( $args_post[ $key ] ) ) { |
| 792 | return false; |
| 793 | } |
| 794 | |
| 795 | return true; |
| 796 | } |
| 797 | |
| 798 | |
| 799 | /** |
| 800 | * 判定対象キーに対する値の完� |
| 801 | �一致判定（AND判定） |
| 802 | * 許可する値が1つの場合 |
| 803 | * |
| 804 | * 存在するチャネルの値がすべて $expected と厳密一致し、かつ最低1つのチャネルに存在する場合のみ true。 |
| 805 | * |
| 806 | * @param array $request_items |
| 807 | * @param string $key |
| 808 | * @param string $expected |
| 809 | * @return bool |
| 810 | */ |
| 811 | private function args_value_matches( array $request_items, string $key, string $expected ): bool { |
| 812 | return $this->args_value_all_match( |
| 813 | $request_items, |
| 814 | $key, |
| 815 | static function ( $value ) use ( $expected ) { |
| 816 | return $value === $expected; |
| 817 | } |
| 818 | ); |
| 819 | } |
| 820 | |
| 821 | |
| 822 | /** |
| 823 | * 判定対象キーに対する値の完� |
| 824 | �一致判定（AND判定） |
| 825 | * 許可する値が2つ以上の場合 |
| 826 | * |
| 827 | * 存在するチャネルの値がすべて $allowed のいずれかと厳密一致し、かつ最低1つのチャネルに存在する場合のみ true。 |
| 828 | * |
| 829 | * @param array $request_items |
| 830 | * @param string $key |
| 831 | * @param string[] $allowed |
| 832 | * @return bool |
| 833 | */ |
| 834 | private function args_value_matches_any( array $request_items, string $key, array $allowed ): bool { |
| 835 | return $this->args_value_all_match( |
| 836 | $request_items, |
| 837 | $key, |
| 838 | static function ( $value ) use ( $allowed ) { |
| 839 | return in_array( $value, $allowed, true ); |
| 840 | } |
| 841 | ); |
| 842 | } |
| 843 | |
| 844 | |
| 845 | /** |
| 846 | * 判定対象キーに対する値の正規表現一致判定（AND判定） |
| 847 | * |
| 848 | * 存在するチャネルの値がすべて $pattern に一致し、かつ最低1つに存在する場合のみ true。 |
| 849 | * |
| 850 | * @param array $request_items |
| 851 | * @param string $key |
| 852 | * @param string $pattern |
| 853 | * @return bool |
| 854 | */ |
| 855 | private function args_value_matches_regex( array $request_items, string $key, string $pattern ): bool { |
| 856 | return $this->args_value_all_match( |
| 857 | $request_items, |
| 858 | $key, |
| 859 | static function ( $value ) use ( $pattern ) { |
| 860 | return is_string( $value ) && 1 === preg_match( $pattern, $value ); |
| 861 | } |
| 862 | ); |
| 863 | } |
| 864 | |
| 865 | |
| 866 | /** |
| 867 | * 判定対象キーに対する値の部分一致判定（AND判定） |
| 868 | * |
| 869 | * 存在するチャネルの値がすべて $needle を含み、かつ最低1つに存在する場合のみ true。 |
| 870 | * |
| 871 | * @param array $request_items |
| 872 | * @param string $key |
| 873 | * @param string $needle |
| 874 | * @return bool |
| 875 | */ |
| 876 | private function args_value_matches_partial( array $request_items, string $key, string $needle ): bool { |
| 877 | return $this->args_value_all_match( |
| 878 | $request_items, |
| 879 | $key, |
| 880 | static function ( $value ) use ( $needle ) { |
| 881 | return is_string( $value ) && false !== strpos( $value, $needle ); |
| 882 | } |
| 883 | ); |
| 884 | } |
| 885 | |
| 886 | |
| 887 | /** |
| 888 | * 判定対象キーの存在判定（OR判定） |
| 889 | * |
| 890 | * どちらかのチャネルに存在すれば true |
| 891 | * |
| 892 | * @param array $request_items |
| 893 | * @param string $key |
| 894 | * @return bool |
| 895 | */ |
| 896 | private function args_key_exists( array $request_items, string $key ): bool { |
| 897 | $args_get = $request_items['args_get'] ?? array(); |
| 898 | $args_post = $request_items['args_post'] ?? array(); |
| 899 | |
| 900 | return array_key_exists( $key, $args_get ) || array_key_exists( $key, $args_post ); |
| 901 | } |
| 902 | |
| 903 | |
| 904 | /** |
| 905 | * WordPress管理画面での特定の処理に対し、特定のルールを除外する |
| 906 | * |
| 907 | * @param string $rule_id |
| 908 | * @param array $request_items |
| 909 | * @param array $remove_rules |
| 910 | * @return array |
| 911 | */ |
| 912 | public function is_remove_rule( $rule_id, $request_items, $remove_rules, $acf_post_types, $cptui_post_types ): array { |
| 913 | $is_rule_removed = false; |
| 914 | $modify_remove_variables = array(); |
| 915 | $modify_variables = array(); |
| 916 | |
| 917 | if ( isset( $remove_rules['woocommerce'] ) ) { |
| 918 | if ( in_array( $rule_id, $remove_rules['woocommerce'], true ) ) { |
| 919 | $sbjs_cookie_keys = preg_grep( '/^sbjs_.+/', array_keys( $request_items['request_cookies'] ) ); |
| 920 | |
| 921 | // sourcebusterの除外（woocommerce） |
| 922 | if ( ! empty( $sbjs_cookie_keys ) ) { |
| 923 | foreach ( $sbjs_cookie_keys as $key ) { |
| 924 | if ( preg_match( '/(\;|\||\`)\W*?\b(?:(?:c(?:h(?:grp|mod|own|sh)|md|pp)|p(?:asswd|ython|erl|ing|s)|n(?:asm|map|c)|f(?:inger|tp)|(?:kil|mai)l|(?:xte)?rm|ls(?:of)?|telnet|uname|echo|id)\b|g(?:\+\+|cc\b))/i', $request_items['request_cookies'][ $key ] ) === 1 ) { |
| 925 | $is_rule_removed = true; |
| 926 | break; |
| 927 | } |
| 928 | } |
| 929 | } |
| 930 | } |
| 931 | } |
| 932 | |
| 933 | if ( isset( $remove_rules['ajax_customize'] ) ) { |
| 934 | if ( in_array( $rule_id, $remove_rules['ajax_customize'], true ) ) { |
| 935 | // カスタマイズ操作、オートセーブ時の除外（issetで� |
| 936 | �に判定、最安価） |
| 937 | if ( |
| 938 | $this->args_key_exists( $request_items, 'customize_changeset_uuid' ) && |
| 939 | ( $this->args_value_matches( $request_items, 'customize_autosaved', 'on' ) || $this->args_value_matches( $request_items, 'wp_customize', 'on' ) ) |
| 940 | ) { |
| 941 | $action = $request_items['args_post']['action'] ?? ''; |
| 942 | if ( $action === 'update-widget' ) { |
| 943 | // actionがupdate-widgetの場合はルール� |
| 944 | �体を除外（cocoon） |
| 945 | $is_rule_removed = true; |
| 946 | } else { |
| 947 | // それ以外の場合はcustomized, customize_changeset_dataキーのみ除外 |
| 948 | $modify_remove_variables['args_post'] = array( 'customized', 'customize_changeset_data' ); |
| 949 | } |
| 950 | // admin-ajax.phpへのリクエスト（ウィジェット保存・メニュー操作(WP5.3)をまとめて1回のpreg_matchで判定） |
| 951 | } elseif ( preg_match( '/wp-admin\/admin-ajax\.php/', $request_items['request_filename'] ) === 1 ) { |
| 952 | $action = $request_items['args_post']['action'] ?? ''; |
| 953 | // ウィジェット保存時（cocoonテーマ）の除外 |
| 954 | if ( $action === 'save-widget' && isset( $request_items['args_post']['widget-id'] ) ) { |
| 955 | $is_rule_removed = true; |
| 956 | // メニュー操作時（WordPress5.3）の除外 |
| 957 | } elseif ( $action === 'add-menu-item' ) { |
| 958 | $is_rule_removed = true; |
| 959 | } |
| 960 | // メニュー操作時（cocoonテーマ）の除外 |
| 961 | } elseif ( preg_match( '/wp-admin\/nav-menus\.php/', $request_items['request_filename'] ) === 1 ) { |
| 962 | if ( $this->args_value_matches_any( $request_items, 'action', array( 'update', 'edit' ) ) ) { |
| 963 | $is_rule_removed = true; |
| 964 | } |
| 965 | } |
| 966 | } |
| 967 | } |
| 968 | |
| 969 | if ( isset( $remove_rules['rest_api'] ) ) { |
| 970 | $rest_endpoint = $this->get_rest_endpoint( $request_items ); |
| 971 | |
| 972 | // 投稿・編集（templates, blocks, template-parts, navigation, pages, posts）の場合はcontentキーを除外 |
| 973 | if ( preg_match( '/templates|blocks|template-parts|navigation|pages|posts/', $rest_endpoint ) === 1 ) { |
| 974 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 975 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 976 | $modify_remove_variables['args_get'] = array( 'content' ); |
| 977 | $modify_remove_variables['args_post'] = array( 'content' ); |
| 978 | } |
| 979 | } |
| 980 | |
| 981 | // global-styles の場合はstylesキーを除外 |
| 982 | } elseif ( preg_match( '/global-styles/', $rest_endpoint ) === 1 ) { |
| 983 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 984 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 985 | $modify_remove_variables['args_get'] = array( '/^styles/' ); |
| 986 | $modify_remove_variables['args_post'] = array( '/^styles/' ); |
| 987 | } |
| 988 | } |
| 989 | |
| 990 | // batch の場合はrequestsキーを除外 |
| 991 | } elseif ( preg_match( '/batch/', $rest_endpoint ) === 1 ) { |
| 992 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 993 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 994 | $modify_remove_variables['args_post'] = array( '/^requests/' ); |
| 995 | } |
| 996 | } |
| 997 | |
| 998 | // 投稿・編集の操作は特定のルールを除外する(post.php) |
| 999 | } elseif ( preg_match( '/wp-admin\/post\.php/', $request_items['request_filename'] ) === 1 ) { |
| 1000 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 1001 | if ( $this->args_value_matches( $request_items, 'action', 'editpost' ) ) { |
| 1002 | $is_rule_removed = true; |
| 1003 | } elseif ( $this->args_value_matches( $request_items, 'action', 'post-quickdraft-save' ) ) { |
| 1004 | $modify_remove_variables['args_post'] = array( 'content' ); |
| 1005 | } |
| 1006 | } |
| 1007 | |
| 1008 | // カスタマイズ機能からの投稿作成時の除外 |
| 1009 | } elseif ( |
| 1010 | $this->args_key_exists( $request_items, 'customize_changeset_uuid' ) && |
| 1011 | ( $this->args_value_matches( $request_items, 'customize_autosaved', 'on' ) || $this->args_value_matches( $request_items, 'wp_customize', 'on' ) ) |
| 1012 | ) { |
| 1013 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 1014 | if ( $this->args_value_matches( $request_items, 'action', 'customize-nav-menus-insert-auto-draft' ) ) { |
| 1015 | $modify_remove_variables['args_post'] = array( '/^params/' ); |
| 1016 | } |
| 1017 | } |
| 1018 | |
| 1019 | // nishiki の場合はcontentキーを除外 |
| 1020 | } elseif ( preg_match( '/wp\/v2\/nishiki_pro_(patterns|content)/', $rest_endpoint ) === 1 ) { |
| 1021 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 1022 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 1023 | $modify_remove_variables['args_get'] = array( 'content' ); |
| 1024 | $modify_remove_variables['args_post'] = array( 'content' ); |
| 1025 | } |
| 1026 | } |
| 1027 | |
| 1028 | // xerite の場合はcontentキーを除外 |
| 1029 | } elseif ( preg_match( '/wp\/v2\/xw_block_patterns/', $rest_endpoint ) === 1 ) { |
| 1030 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 1031 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 1032 | $modify_remove_variables['args_get'] = array( 'content' ); |
| 1033 | $modify_remove_variables['args_post'] = array( 'content' ); |
| 1034 | } |
| 1035 | } |
| 1036 | |
| 1037 | // Lightning の場合はcontentキーを除外 |
| 1038 | } elseif ( preg_match( '/wp\/v2\/(cta|vk-block-patterns)/', $rest_endpoint ) === 1 ) { |
| 1039 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 1040 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 1041 | $modify_remove_variables['args_get'] = array( 'content' ); |
| 1042 | $modify_remove_variables['args_post'] = array( 'content' ); |
| 1043 | } |
| 1044 | } |
| 1045 | |
| 1046 | // SWELL の場合はcontentキーを除外 |
| 1047 | } elseif ( preg_match( '/wp\/v2\/(lp|blog_parts)/', $rest_endpoint ) === 1 ) { |
| 1048 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 1049 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 1050 | $modify_remove_variables['args_get'] = array( 'content' ); |
| 1051 | $modify_remove_variables['args_post'] = array( 'content' ); |
| 1052 | } |
| 1053 | } |
| 1054 | |
| 1055 | // Snow Monkey の場合はcontentキーを除外 |
| 1056 | } elseif ( preg_match( '/wp\/v2\/snow-monkey-search/', $rest_endpoint ) === 1 ) { |
| 1057 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 1058 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 1059 | $modify_remove_variables['args_get'] = array( 'content' ); |
| 1060 | $modify_remove_variables['args_post'] = array( 'content' ); |
| 1061 | } |
| 1062 | } |
| 1063 | |
| 1064 | // Advanced Custom Fields の場合はcontentキーを除外 |
| 1065 | // カスタム投稿タイプキーは小文字、アンダースコア、ダッシュのみを許容するが、念のためarray_mapで正規表現用にエスケープする |
| 1066 | } elseif ( ! empty( $acf_post_types ) && preg_match( '/wp\/v2\/(' . implode( '|', array_map( 'preg_quote', $acf_post_types ) ) . ')/', $rest_endpoint ) === 1 ) { |
| 1067 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 1068 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 1069 | $modify_remove_variables['args_get'] = array( 'content' ); |
| 1070 | $modify_remove_variables['args_post'] = array( 'content' ); |
| 1071 | } |
| 1072 | } |
| 1073 | |
| 1074 | // Custom Post Type UI の場合はcontentキーを除外 |
| 1075 | // カスタム投稿タイプキーは小文字、アンダースコア、ダッシュのみを許容するが、念のためarray_mapで正規表現用にエスケープする |
| 1076 | } elseif ( ! empty( $cptui_post_types ) && preg_match( '/wp\/v2\/(' . implode( '|', array_map( 'preg_quote', $cptui_post_types ) ) . ')/', $rest_endpoint ) === 1 ) { |
| 1077 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 1078 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 1079 | $modify_remove_variables['args_get'] = array( 'content' ); |
| 1080 | $modify_remove_variables['args_post'] = array( 'content' ); |
| 1081 | } |
| 1082 | } |
| 1083 | } |
| 1084 | } |
| 1085 | |
| 1086 | if ( isset( $remove_rules['rest_api_search'] ) ) { |
| 1087 | $rest_endpoint = $this->get_rest_endpoint( $request_items ); |
| 1088 | |
| 1089 | // pages または posts エンドポイントで context=edit かつ search パラメータが存在する場合は search の値を除外 |
| 1090 | if ( preg_match( '/wp\/v2\/(pages|posts)/', $rest_endpoint ) === 1 ) { |
| 1091 | if ( in_array( $rule_id, $remove_rules['rest_api_search'], true ) ) { |
| 1092 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 1093 | if ( ( $request_items['args_get']['context'] ?? '' ) === 'edit' && isset( $request_items['args_get']['search'] ) ) { |
| 1094 | $modify_remove_variables['args_get'] = array( 'search' ); |
| 1095 | } |
| 1096 | } |
| 1097 | } |
| 1098 | } |
| 1099 | } |
| 1100 | |
| 1101 | // cocoonテーマでの除外処理（theme-func-text, theme-settings, theme-ranking, theme-affiliate-tag） |
| 1102 | if ( isset( $remove_rules['cocoon'] ) ) { |
| 1103 | $page = $request_items['args_get']['page'] ?? ''; |
| 1104 | if ( preg_match( '/^theme-(func-text|settings|ranking|affiliate-tag)$/', $page ) === 1 ) { |
| 1105 | if ( preg_match( '/wp-admin\/admin\.php/', $request_items['request_filename'] ) === 1 ) { |
| 1106 | if ( in_array( $rule_id, $remove_rules['cocoon'], true ) ) { |
| 1107 | if ( $this->args_value_matches_any( $request_items, 'action', array( 'new', 'edit' ) ) ) { |
| 1108 | $is_rule_removed = true; |
| 1109 | } |
| 1110 | |
| 1111 | if ( isset( $request_items['args_post']['comment_information_message'] ) ) { |
| 1112 | $is_rule_removed = true; |
| 1113 | } |
| 1114 | } |
| 1115 | } |
| 1116 | } |
| 1117 | } |
| 1118 | |
| 1119 | if ( isset( $remove_rules['emanon'] ) ) { |
| 1120 | // emanonルール除外 |
| 1121 | if ( ( $request_items['args_get']['page'] ?? '' ) === 'emanon_setting_page' ) { |
| 1122 | if ( preg_match( '/wp-admin\/admin\.php/', $request_items['request_filename'] ) === 1 ) { |
| 1123 | if ( in_array( $rule_id, $remove_rules['emanon'], true ) ) { |
| 1124 | if ( $this->args_value_matches( $request_items, 'action', 'delete_transients_emanon_setting' ) ) { |
| 1125 | $is_rule_removed = true; |
| 1126 | } |
| 1127 | } |
| 1128 | } |
| 1129 | } |
| 1130 | } |
| 1131 | |
| 1132 | if ( isset( $remove_rules['vkexunit'] ) ) { |
| 1133 | // vkExUnitルール除外（メイン設定） |
| 1134 | if ( ( $request_items['args_get']['page'] ?? '' ) === 'vkExUnit_main_setting' ) { |
| 1135 | if ( preg_match( '/wp-admin\/admin\.php/', $request_items['request_filename'] ) === 1 ) { |
| 1136 | if ( isset( $request_items['args_post']['_nonce_vkExUnit'] ) ) { |
| 1137 | if ( in_array( $rule_id, $remove_rules['vkexunit'], true ) ) { |
| 1138 | $is_rule_removed = true; |
| 1139 | } |
| 1140 | } |
| 1141 | } |
| 1142 | } |
| 1143 | |
| 1144 | // vkExUnitルール除外（cssカスタマイズ） |
| 1145 | if ( preg_match( '/wp-admin\/admin.php\?page\=vkExUnit_css_customize/', $_SERVER['REQUEST_URI'] ?? '' ) === 1 ) { |
| 1146 | if ( in_array( $rule_id, $remove_rules['vkexunit'], true ) ) { |
| 1147 | if ( $this->args_value_matches_partial( $request_items, '_wp_http_referer', '/wp-admin/admin.php?page=vkExUnit_css_customize' ) ) { |
| 1148 | $is_rule_removed = true; |
| 1149 | } |
| 1150 | } |
| 1151 | } |
| 1152 | } |
| 1153 | |
| 1154 | if ( isset( $remove_rules['nishiki'] ) ) { |
| 1155 | // nishikiルール除外 |
| 1156 | if ( $this->args_value_matches_regex( $request_items, 'option_page', '/^nishiki_pro_general/' ) ) { |
| 1157 | if ( preg_match( '/wp-admin\/options\.php/', $request_items['request_filename'] ) === 1 ) { |
| 1158 | if ( in_array( $rule_id, $remove_rules['nishiki'], true ) ) { |
| 1159 | if ( $this->args_value_matches( $request_items, 'action', 'update' ) ) { |
| 1160 | $is_rule_removed = true; |
| 1161 | } |
| 1162 | } |
| 1163 | } |
| 1164 | } |
| 1165 | } |
| 1166 | |
| 1167 | if ( isset( $remove_rules['swell'] ) ) { |
| 1168 | // swellルール除外 |
| 1169 | if ( $this->args_value_matches_regex( $request_items, 'option_page', '/^swell_setting_group_editor/' ) ) { |
| 1170 | if ( preg_match( '/wp-admin\/options\.php/', $request_items['request_filename'] ) === 1 ) { |
| 1171 | if ( in_array( $rule_id, $remove_rules['swell'], true ) ) { |
| 1172 | if ( $this->args_value_matches( $request_items, 'action', 'update' ) ) { |
| 1173 | $is_rule_removed = true; |
| 1174 | } |
| 1175 | } |
| 1176 | } |
| 1177 | } |
| 1178 | } |
| 1179 | |
| 1180 | if ( isset( $remove_rules['comment'] ) ) { |
| 1181 | // コメント編集時の除外 |
| 1182 | if ( preg_match( '/wp-admin\/comment\.php/', $request_items['request_filename'] ?? '' ) === 1 ) { |
| 1183 | if ( in_array( $rule_id, $remove_rules['comment'], true ) ) { |
| 1184 | if ( $this->args_value_matches( $request_items, 'action', 'editedcomment' ) ) { |
| 1185 | $is_rule_removed = true; |
| 1186 | } |
| 1187 | } |
| 1188 | } |
| 1189 | } |
| 1190 | |
| 1191 | if ( isset( $remove_rules['ajax_editor'] ) ) { |
| 1192 | // テーマ・プラグインエディターの操作時の除外 |
| 1193 | if ( preg_match( '/wp-admin\/admin-ajax\.php/', $request_items['request_filename'] ) === 1 ) { |
| 1194 | if ( in_array( $rule_id, $remove_rules['ajax_editor'], true ) ) { |
| 1195 | if ( $this->args_value_matches_regex( $request_items, '_wp_http_referer', '/theme-editor(\.php)?|plugin-editor(\.php)?/' ) ) { |
| 1196 | $is_rule_removed = true; |
| 1197 | } |
| 1198 | |
| 1199 | // オートセーブ時 |
| 1200 | $screen_id = $request_items['args_post']['screen_id'] ?? ''; |
| 1201 | if ( preg_match( '/theme-editor(\.php)?|plugin-editor(\.php)?/', $screen_id ) === 1 ) { |
| 1202 | $is_rule_removed = true; |
| 1203 | } |
| 1204 | } |
| 1205 | } |
| 1206 | } |
| 1207 | |
| 1208 | if ( isset( $remove_rules['rename_login_page'] ) ) { |
| 1209 | $login_page_name = $remove_rules['rename_login_page']['login_page_name']; |
| 1210 | $is_target_rule = in_array( $rule_id, $remove_rules['rename_login_page']['rule_ids'], true ); |
| 1211 | |
| 1212 | if ( $is_target_rule ) { |
| 1213 | // ログインURL変更設定保存時：rename_login_page_nameキーの値のみ除外 |
| 1214 | if ( preg_match( '/wp-admin\/admin\.php/', $request_items['request_filename'] ) === 1 ) { |
| 1215 | if ( ( $request_items['args_get']['page'] ?? '' ) === 'cloudsecurewp_rename_login_page' ) { |
| 1216 | $modify_remove_variables['args_post'] = array( 'rename_login_page_name' ); |
| 1217 | } |
| 1218 | } |
| 1219 | |
| 1220 | // 変更後ログインURLへのアクセス時、またはリファラーが変更後ログインURLである時の対応 |
| 1221 | if ( ! empty( $login_page_name ) ) { |
| 1222 | $login_page_pattern = '/\/' . preg_quote( $login_page_name, '/' ) . '(?:[\/\?#]|$)/'; |
| 1223 | $is_login_page_access = preg_match( $login_page_pattern, $request_items['request_filename'] ) === 1; |
| 1224 | $is_login_page_referer = preg_match( $login_page_pattern, $_SERVER['HTTP_REFERER'] ?? '' ) === 1; |
| 1225 | |
| 1226 | if ( $is_login_page_access ) { |
| 1227 | // 1. URI自体に誤検知ワードが含まれるため、request_filenameを除外 |
| 1228 | $modify_variables[] = self::VARIABLE_REQUEST_FILENAME; |
| 1229 | |
| 1230 | // 2. args の特定キー（リダイレクト系など）を除外 |
| 1231 | if ( ! isset( $modify_remove_variables['args_get'] ) ) { |
| 1232 | $modify_remove_variables['args_get'] = array(); |
| 1233 | } |
| 1234 | $modify_remove_variables['args_get'] = array_merge( $modify_remove_variables['args_get'], array( 'redirect_to', '_wp_http_referer' ) ); |
| 1235 | |
| 1236 | if ( ! isset( $modify_remove_variables['args_post'] ) ) { |
| 1237 | $modify_remove_variables['args_post'] = array(); |
| 1238 | } |
| 1239 | $modify_remove_variables['args_post'] = array_merge( $modify_remove_variables['args_post'], array( 'redirect_to', '_wp_http_referer' ) ); |
| 1240 | } |
| 1241 | |
| 1242 | if ( $is_login_page_access || $is_login_page_referer ) { |
| 1243 | // 3. リファラーヘッダーを除外 |
| 1244 | if ( ! isset( $modify_remove_variables['request_headers'] ) ) { |
| 1245 | $modify_remove_variables['request_headers'] = array(); |
| 1246 | } |
| 1247 | $modify_remove_variables['request_headers'][] = 'Referer'; |
| 1248 | } |
| 1249 | } |
| 1250 | } |
| 1251 | } |
| 1252 | |
| 1253 | return array( |
| 1254 | 'is_removed' => $is_rule_removed, |
| 1255 | 'modify_remove_variables' => $modify_remove_variables, |
| 1256 | 'modify_variables' => $modify_variables, |
| 1257 | ); |
| 1258 | } |
| 1259 | |
| 1260 | /** |
| 1261 | * Advanced Custom Fieldsプラグイン除外対応 |
| 1262 | * 有効なカスタム投稿タイプキーを取得する |
| 1263 | * |
| 1264 | * @return array |
| 1265 | */ |
| 1266 | public function get_acf_post_types(): array { |
| 1267 | global $wpdb; |
| 1268 | $active_plugins = get_option( 'active_plugins' ); |
| 1269 | $acf_post_types = array(); |
| 1270 | |
| 1271 | if ( is_array( $active_plugins ) && preg_match( '/advanced-custom-fields/', implode( ',', $active_plugins ) ) ) { |
| 1272 | $results = $wpdb->get_results( |
| 1273 | $wpdb->prepare( |
| 1274 | "SELECT post_content |
| 1275 | FROM {$wpdb->posts} |
| 1276 | WHERE post_type = %s |
| 1277 | AND post_status = %s", |
| 1278 | 'acf-post-type', |
| 1279 | 'publish' |
| 1280 | ) |
| 1281 | ); |
| 1282 | |
| 1283 | if ( ! empty( $results ) ) { |
| 1284 | foreach ( $results as $result ) { |
| 1285 | $post_content = unserialize( $result->post_content, [ 'allowed_classes' => false ] ); |
| 1286 | |
| 1287 | if ( is_array( $post_content ) && isset( $post_content['post_type'] ) ) { |
| 1288 | $acf_post_types[] = $post_content['post_type']; |
| 1289 | } |
| 1290 | } |
| 1291 | } |
| 1292 | } |
| 1293 | |
| 1294 | return $acf_post_types; |
| 1295 | } |
| 1296 | |
| 1297 | |
| 1298 | /** |
| 1299 | * Custom Post Type UIプラグイン除外対応 |
| 1300 | * 有効なカスタム投稿タイプキーを取得する |
| 1301 | * |
| 1302 | * @return array |
| 1303 | */ |
| 1304 | public function get_cptui_post_types(): array { |
| 1305 | $active_plugins = get_option( 'active_plugins' ); |
| 1306 | $cptui_post_types = array(); |
| 1307 | |
| 1308 | if ( is_array( $active_plugins ) && preg_match( '/custom-post-type-ui/', implode( ',', $active_plugins ) ) ) { |
| 1309 | $cptui_data = get_option( 'cptui_post_types' ); |
| 1310 | |
| 1311 | if ( is_string( $cptui_data ) ) { |
| 1312 | $cptui_data = unserialize( $cptui_data, [ 'allowed_classes' => false ] ); |
| 1313 | } |
| 1314 | |
| 1315 | if ( is_array( $cptui_data ) ) { |
| 1316 | foreach ( $cptui_data as $post_type ) { |
| 1317 | if ( is_array( $post_type ) && isset( $post_type['name'] ) ) { |
| 1318 | $cptui_post_types[] = $post_type['name']; |
| 1319 | } |
| 1320 | } |
| 1321 | } |
| 1322 | } |
| 1323 | |
| 1324 | return $cptui_post_types; |
| 1325 | } |
| 1326 | |
| 1327 | |
| 1328 | /** |
| 1329 | * バックトラック� |
| 1330 | 過が発生したパラメータの表示用文字列を生成 |
| 1331 | * |
| 1332 | * @param string $variable WAF 変数種別 |
| 1333 | * @param string $key パラメータ名 |
| 1334 | * @return string |
| 1335 | */ |
| 1336 | private function format_backtrack_key( string $variable, string $key ): string { |
| 1337 | switch ( $variable ) { |
| 1338 | // REQUEST_FILENAME / XML は単一文字列を検査するためパラメータ名（キー）を持たず、固定ラベルを返す |
| 1339 | case self::VARIABLE_REQUEST_FILENAME: |
| 1340 | return 'URL'; |
| 1341 | |
| 1342 | case self::VARIABLE_XML: |
| 1343 | return 'XML'; |
| 1344 | |
| 1345 | case self::VARIABLE_ARGS_GET: |
| 1346 | case self::VARIABLE_ARGS_GET_NAMES: |
| 1347 | $label = 'GET'; |
| 1348 | break; |
| 1349 | |
| 1350 | case self::VARIABLE_ARGS_POST: |
| 1351 | case self::VARIABLE_ARGS_POST_NAMES: |
| 1352 | $content_type = isset( $_SERVER['CONTENT_TYPE'] ) ? sanitize_text_field( wp_unslash( $_SERVER['CONTENT_TYPE'] ) ) : ''; |
| 1353 | $label = ( false !== strpos( $content_type, 'application/json' ) ) ? 'JSON' : 'POST'; |
| 1354 | break; |
| 1355 | |
| 1356 | case self::VARIABLE_REQUEST_COOKIES: |
| 1357 | case self::VARIABLE_REQUEST_COOKIES_NAMES: |
| 1358 | $label = 'COOKIE'; |
| 1359 | break; |
| 1360 | |
| 1361 | case self::VARIABLE_REQUEST_HEADERS: |
| 1362 | $label = 'HEADER'; |
| 1363 | break; |
| 1364 | |
| 1365 | // 到達しない想定 |
| 1366 | default: |
| 1367 | return ''; |
| 1368 | } |
| 1369 | |
| 1370 | // パラメータ名が取得できない場合（JSONの空文字キー等）はカテゴリ名のみを返し、 |
| 1371 | // ログの検知データ欄が空文字にならないようにする |
| 1372 | if ( '' === $key ) { |
| 1373 | return $label; |
| 1374 | } |
| 1375 | |
| 1376 | return $label . ': ' . $key; |
| 1377 | } |
| 1378 | |
| 1379 | |
| 1380 | /** |
| 1381 | * 除外対象ユーザーの判定（Cookie認証 + 編集権限） |
| 1382 | * |
| 1383 | * シンプルWAFは plugins_loaded（優� |
| 1384 | �度11）段階で実行されるが、この段階でも |
| 1385 | * wp_validate_auth_cookie() / user_can() は使用できる。Cookie認証以外 |
| 1386 | * （Application Password、JWT、OAuth、Basic認証等）はこの判定では未ログイン扱いとなる。 |
| 1387 | * |
| 1388 | * 除外条件は REST API無効化機能（disable-restapi.php）と揃え、 |
| 1389 | * edit_pages または edit_posts を持つユーザー（＝寄稿� |
| 1390 | 以上）のみを対象とする。 |
| 1391 | * |
| 1392 | * @return bool true: 除外対象（編集権限を持つログインユーザー） / false: それ以外 |
| 1393 | */ |
| 1394 | private function is_excluded_user_by_cookie(): bool { |
| 1395 | if ( null === $this->excluded_user_by_cookie ) { |
| 1396 | $this->excluded_user_by_cookie = false; |
| 1397 | |
| 1398 | if ( function_exists( 'wp_validate_auth_cookie' ) && function_exists( 'user_can' ) ) { |
| 1399 | $user_id = wp_validate_auth_cookie( '', 'logged_in' ); |
| 1400 | if ( $user_id ) { |
| 1401 | $this->excluded_user_by_cookie = |
| 1402 | user_can( $user_id, 'edit_pages' ) || user_can( $user_id, 'edit_posts' ); |
| 1403 | } |
| 1404 | } |
| 1405 | } |
| 1406 | |
| 1407 | return $this->excluded_user_by_cookie; |
| 1408 | } |
| 1409 | |
| 1410 | |
| 1411 | /** |
| 1412 | * バックトラック� |
| 1413 | 過エラーの結果� |
| 1414 | �列を生成 |
| 1415 | * |
| 1416 | * @param array $request_items |
| 1417 | * @param string $variable WAF 変数種別 |
| 1418 | * @param string $key パラメータ名 |
| 1419 | * @return array |
| 1420 | */ |
| 1421 | private function get_backtrack_error_results( array $request_items, string $variable, string $key ): array { |
| 1422 | $matched = $this->format_backtrack_key( $variable, $key ); |
| 1423 | |
| 1424 | // バックトラックエラー記録用のURL生成 |
| 1425 | if ( isset( $_SERVER['HTTP_HOST'] ) && isset( $_SERVER['REQUEST_URI'] ) ) { |
| 1426 | $backtrack_url = ( empty( $_SERVER['HTTPS'] ) ? 'http://' : 'https://' ) |
| 1427 | . sanitize_text_field( wp_unslash( $_SERVER['HTTP_HOST'] ) ) |
| 1428 | . esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ) ); |
| 1429 | } else { |
| 1430 | $backtrack_url = ''; |
| 1431 | } |
| 1432 | |
| 1433 | return array( |
| 1434 | 'matched' => $matched, |
| 1435 | 'ip' => $request_items['ip'], |
| 1436 | 'access_at' => $request_items['access_at'], |
| 1437 | 'url' => $backtrack_url, |
| 1438 | 'is_backtrack_error' => true, |
| 1439 | ); |
| 1440 | } |
| 1441 | |
| 1442 | |
| 1443 | /** |
| 1444 | * waf_engine |
| 1445 | * |
| 1446 | * @param array $waf_rules |
| 1447 | * @param array $locationmatch_rules |
| 1448 | * @param int $available_rules |
| 1449 | * @param array $remove_rules |
| 1450 | * @return array |
| 1451 | */ |
| 1452 | public function waf_engine( $waf_rules, $locationmatch_rules, $available_rules, $remove_rules, $deny_on_backtrack_error = '1' ): array { |
| 1453 | $request_items = $this->get_request_items(); |
| 1454 | |
| 1455 | $locationmatch_removed_rule_ids = $this->locationmatch_remove_rules( $locationmatch_rules, $_SERVER['REQUEST_URI'] ?? '' ); |
| 1456 | $skip = 0; |
| 1457 | $skipafter = ''; |
| 1458 | $chain_items = array(); |
| 1459 | $tmp_match_results = array(); |
| 1460 | |
| 1461 | // Advanced Custom Fieldsプラグイン除外対応で追加 |
| 1462 | $acf_post_types = $this->get_acf_post_types(); |
| 1463 | // Custom Post Type UIプラグイン除外対応で追加 |
| 1464 | $cptui_post_types = $this->get_cptui_post_types(); |
| 1465 | |
| 1466 | foreach ( $waf_rules as $waf_rule ) { |
| 1467 | // 前回マッチしたルールからskipの設定を引き継いでいる場合はスキップ |
| 1468 | if ( $this->is_skip_enabled( $skip ) ) { |
| 1469 | $skip--; |
| 1470 | continue; |
| 1471 | } |
| 1472 | |
| 1473 | // 前回マッチしたルールからskipafterの設定を引き継いでいる場合は現在のルールIDと比較し、一致するまでスキップ |
| 1474 | // ルールIDの比較結果が同じの場合は、$skipafterを初期化して次のルールから判定を行う |
| 1475 | if ( $this->is_skipafter_enabled( $skipafter ) ) { |
| 1476 | if ( $skipafter !== $waf_rule['id'] ) { |
| 1477 | continue; |
| 1478 | } else { |
| 1479 | $skipafter = ''; |
| 1480 | continue; |
| 1481 | } |
| 1482 | } |
| 1483 | |
| 1484 | // LocationMatchによるルールの除外があるか確認。ある場合は現在のルールIDと比較し、一致する場合はスキップ |
| 1485 | if ( ! empty( $locationmatch_removed_rule_ids ) ) { |
| 1486 | if ( in_array( $waf_rule['id'], $locationmatch_removed_rule_ids, true ) ) { |
| 1487 | continue; |
| 1488 | } |
| 1489 | } |
| 1490 | |
| 1491 | // ルールにvariables設定がない場合、skip,akipafterの設定を確認して次のルール判定へ |
| 1492 | if ( empty( $waf_rule['variables'] ) ) { |
| 1493 | $skip = $this->check_skip( $waf_rule['skip'] ); |
| 1494 | $skipafter = $this->check_skipafter( $waf_rule['skipafter'] ); |
| 1495 | continue; |
| 1496 | } |
| 1497 | |
| 1498 | // 特定の操作の場合、特定のルールを除外する |
| 1499 | $remove_rule_result = $this->is_remove_rule( $waf_rule['id'], $request_items, $remove_rules, $acf_post_types, $cptui_post_types ); |
| 1500 | |
| 1501 | if ( $remove_rule_result['is_removed'] ) { |
| 1502 | continue; |
| 1503 | } |
| 1504 | |
| 1505 | // ルールのremove_variablesを動的に変更 |
| 1506 | if ( ! empty( $remove_rule_result['modify_remove_variables'] ) ) { |
| 1507 | $waf_rule['remove_variables'] = array_merge_recursive( |
| 1508 | $waf_rule['remove_variables'], |
| 1509 | $remove_rule_result['modify_remove_variables'] |
| 1510 | ); |
| 1511 | } |
| 1512 | |
| 1513 | // ルールのvariablesを動的に変更 |
| 1514 | if ( ! empty( $remove_rule_result['modify_variables'] ) ) { |
| 1515 | $waf_rule['variables'] = array_diff( |
| 1516 | $waf_rule['variables'], |
| 1517 | $remove_rule_result['modify_variables'] |
| 1518 | ); |
| 1519 | } |
| 1520 | |
| 1521 | foreach ( $waf_rule['variables'] as $variable ) { |
| 1522 | switch ( $variable ) { |
| 1523 | case self::VARIABLE_ARGS_GET: |
| 1524 | $results = $this->check_request_item_array( $waf_rule, $request_items, self::VARIABLE_ARGS_GET, $chain_items ); |
| 1525 | break; |
| 1526 | |
| 1527 | case self::VARIABLE_ARGS_GET_NAMES: |
| 1528 | $results = $this->check_request_item_array( $waf_rule, $request_items, self::VARIABLE_ARGS_GET_NAMES, $chain_items ); |
| 1529 | break; |
| 1530 | |
| 1531 | case self::VARIABLE_ARGS_POST: |
| 1532 | $results = $this->check_request_item_array( $waf_rule, $request_items, self::VARIABLE_ARGS_POST, $chain_items ); |
| 1533 | break; |
| 1534 | |
| 1535 | case self::VARIABLE_ARGS_POST_NAMES: |
| 1536 | $results = $this->check_request_item_array( $waf_rule, $request_items, self::VARIABLE_ARGS_POST_NAMES, $chain_items ); |
| 1537 | break; |
| 1538 | |
| 1539 | case self::VARIABLE_REQUEST_COOKIES: |
| 1540 | $results = $this->check_request_item_array( $waf_rule, $request_items, self::VARIABLE_REQUEST_COOKIES, $chain_items ); |
| 1541 | break; |
| 1542 | |
| 1543 | case self::VARIABLE_REQUEST_COOKIES_NAMES: |
| 1544 | $results = $this->check_request_item_array( $waf_rule, $request_items, self::VARIABLE_REQUEST_COOKIES_NAMES, $chain_items ); |
| 1545 | break; |
| 1546 | |
| 1547 | case self::VARIABLE_REQUEST_HEADERS: |
| 1548 | $results = $this->check_request_item_array( $waf_rule, $request_items, self::VARIABLE_REQUEST_HEADERS, $chain_items ); |
| 1549 | break; |
| 1550 | |
| 1551 | case self::VARIABLE_REQUEST_FILENAME: |
| 1552 | $results = $this->check_request_item_strings( $waf_rule, $request_items, self::VARIABLE_REQUEST_FILENAME, $chain_items ); |
| 1553 | break; |
| 1554 | |
| 1555 | case self::VARIABLE_XML: |
| 1556 | $results = $this->check_request_item_strings( $waf_rule, $request_items, self::VARIABLE_XML, $chain_items ); |
| 1557 | break; |
| 1558 | } |
| 1559 | |
| 1560 | // プリフィルタ（attack='')でバックトラック� |
| 1561 | 過エラーが発生した場合は一致側に倒し、 |
| 1562 | // 除外対象に関わらず、後続の精密ルールに進んで判定する |
| 1563 | if ( ! empty( $results['has_backtrack_error'] ) && '' === $waf_rule['attack'] ) { |
| 1564 | $results = $this->get_rule_settings_and_results( $waf_rule, $request_items, $variable, $chain_items, '' ); |
| 1565 | } |
| 1566 | |
| 1567 | // バックトラック� |
| 1568 | 過エラーの処理 |
| 1569 | // 編集権限を持つログインユーザー（Cookie認証）は遮断・ログ記録の対象外とし、 |
| 1570 | // それ以外（未ログイン・権限なしユーザー）の場合のみ以降の判定を行う |
| 1571 | if ( ! empty( $results['has_backtrack_error'] ) && ! $this->is_excluded_user_by_cookie() ) { |
| 1572 | $backtrack_error_result = $this->get_backtrack_error_results( $request_items, $variable, $results['backtrack_key'] ?? '' ); |
| 1573 | |
| 1574 | // 有効な攻撃種別かつ即遮断設定（'1'）の場合のみ遮断する。 |
| 1575 | if ( ( $waf_rule['attack'] & $available_rules ) !== 0 && $deny_on_backtrack_error === '1' ) { |
| 1576 | // バックトラック� |
| 1577 | 過発生時点で即遮断 |
| 1578 | $backtrack_error_result['is_deny'] = true; |
| 1579 | $backtrack_error_result['is_write_log'] = true; |
| 1580 | |
| 1581 | return $backtrack_error_result; |
| 1582 | } |
| 1583 | // 遮断しない場合（無効化された攻撃種別、または '0'：ログのみ設定）は |
| 1584 | // バックトラックエラーをログ候補として保持し、次のルールへ続行 |
| 1585 | $tmp_match_results = $backtrack_error_result; |
| 1586 | } |
| 1587 | |
| 1588 | $is_matched = $results['is_matched']; |
| 1589 | |
| 1590 | if ( $is_matched ) { |
| 1591 | $skip = $results['skip']; |
| 1592 | $skipafter = $results['skipafter']; |
| 1593 | $chain_items = $results['chain_items']; |
| 1594 | $match_results = $results['match_results']; |
| 1595 | |
| 1596 | // マッチしたが、chain,skip,skipafterの設定がある場合は次のルール判定へ |
| 1597 | if ( ! empty( $chain_items ) || 0 < $skip || ! empty( $skipafter ) ) { |
| 1598 | break; |
| 1599 | } |
| 1600 | |
| 1601 | // マッチしたが、除外設定されているルールの場合は値を保持して次のルール判定へ |
| 1602 | if ( ( $waf_rule['attack'] & $available_rules ) === 0 ) { |
| 1603 | $tmp_match_results = $match_results; |
| 1604 | break; |
| 1605 | } |
| 1606 | |
| 1607 | // マッチした結果がある場合は終了処理へ（ログ記述、通知、画面表示） |
| 1608 | if ( ! empty( $match_results ) ) { |
| 1609 | $match_results['is_deny'] = true; |
| 1610 | $match_results['is_write_log'] = true; |
| 1611 | $match_results['is_backtrack_error'] = false; |
| 1612 | |
| 1613 | return $match_results; |
| 1614 | } |
| 1615 | } |
| 1616 | |
| 1617 | $chain_items = array(); |
| 1618 | } |
| 1619 | } |
| 1620 | |
| 1621 | if ( ! empty( $tmp_match_results ) ) { |
| 1622 | $match_results = $tmp_match_results; |
| 1623 | $match_results['is_deny'] = false; |
| 1624 | $match_results['is_write_log'] = true; |
| 1625 | $match_results['is_backtrack_error'] = ! empty( $match_results['is_backtrack_error'] ); |
| 1626 | |
| 1627 | } else { |
| 1628 | $match_results['is_deny'] = false; |
| 1629 | $match_results['is_write_log'] = false; |
| 1630 | $match_results['is_backtrack_error'] = false; |
| 1631 | } |
| 1632 | |
| 1633 | return $match_results; |
| 1634 | } |
| 1635 | } |
| 1636 |