admin
3 months ago
cli
8 months ago
lib
3 months ago
captcha.php
3 months ago
cloudsecure-wp.php
3 months ago
common.php
3 months ago
config.php
2 years ago
disable-access-system-file.php
4 months ago
disable-author-query.php
2 years ago
disable-login.php
3 months ago
disable-restapi.php
7 months ago
disable-xmlrpc.php
1 year ago
htaccess.php
3 months ago
login-log.php
3 months ago
login-notification.php
1 year ago
rename-login-page.php
3 months ago
restrict-admin-page.php
3 months ago
server-error-notification.php
3 months ago
two-factor-authentication.php
3 months ago
unify-messages.php
2 years ago
update-notice.php
7 months ago
waf-engine.php
3 months ago
waf.php
3 months ago
waf-engine.php
1157 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 = 'args'; |
| 9 | protected const VARIABLE_ARGS_NAMES = 'args_names'; |
| 10 | protected const VARIABLE_REQUEST_COOKIES = 'request_cookies'; |
| 11 | protected const VARIABLE_REQUEST_COOKIES_NAMES = 'request_cookies_names'; |
| 12 | protected const VARIABLE_REQUEST_HEADERS = 'request_headers'; |
| 13 | protected const VARIABLE_REQUEST_FILENAME = 'request_filename'; |
| 14 | protected const VARIABLE_XML = 'xml'; |
| 15 | private $parsed_xml; |
| 16 | |
| 17 | |
| 18 | |
| 19 | function __construct( array $info ) { |
| 20 | parent::__construct( $info ); |
| 21 | |
| 22 | } |
| 23 | |
| 24 | |
| 25 | /** |
| 26 | * XML パース時のコールバック関数 |
| 27 | * |
| 28 | * @return void |
| 29 | */ |
| 30 | public function char( $parser, $data ): void { |
| 31 | $this->parsed_xml .= $data; |
| 32 | } |
| 33 | |
| 34 | |
| 35 | /** |
| 36 | * XML パース |
| 37 | * |
| 38 | * @return string |
| 39 | */ |
| 40 | public function xml_parser(): string { |
| 41 | $request_body = file_get_contents( 'php://input' ); |
| 42 | $this->parsed_xml = ''; |
| 43 | |
| 44 | if ( ! empty( $request_body ) ) { |
| 45 | $parser = xml_parser_create(); |
| 46 | |
| 47 | xml_set_object( $parser, $this ); |
| 48 | xml_set_character_data_handler( $parser, 'char' ); |
| 49 | |
| 50 | if ( ! xml_parse( $parser, $request_body ) ) { |
| 51 | $this->parsed_xml .= 'xml_parse_failed'; |
| 52 | }; |
| 53 | |
| 54 | xml_parser_free( $parser ); |
| 55 | } |
| 56 | |
| 57 | return $this->parsed_xml; |
| 58 | } |
| 59 | |
| 60 | |
| 61 | /** |
| 62 | * ARGS、ARGS_NAMES 用 クエリ文字列、POSTデータ取得 |
| 63 | * |
| 64 | * @return array |
| 65 | */ |
| 66 | public function get_request_args_data(): array { |
| 67 | $args = array(); |
| 68 | |
| 69 | if ( ! empty( $_GET ) ) { |
| 70 | $args = $_GET; |
| 71 | } |
| 72 | |
| 73 | if ( ! empty( $_POST ) ) { |
| 74 | $args = array_merge( $args, $_POST ); |
| 75 | |
| 76 | } else { |
| 77 | $post_data = file_get_contents( 'php://input' ); |
| 78 | |
| 79 | if ( ! empty( $post_data ) ) { |
| 80 | $json_decoded_post_data = json_decode( $post_data, true ); |
| 81 | |
| 82 | // nullでなければjsonとなる |
| 83 | if ( is_array( $json_decoded_post_data ) ) { |
| 84 | $args = array_merge( $args, $json_decoded_post_data ); |
| 85 | } |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | return $args; |
| 90 | } |
| 91 | |
| 92 | |
| 93 | /** |
| 94 | * Cookie� |
| 95 | 報取得 |
| 96 | * |
| 97 | * @return array |
| 98 | */ |
| 99 | public function get_request_cookies(): array { |
| 100 | if ( ! empty( $_COOKIE ) ) { |
| 101 | return $_COOKIE; |
| 102 | } else { |
| 103 | return array(); |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | |
| 108 | /** |
| 109 | * リクエスト� |
| 110 | 報取得 |
| 111 | * 取得・パースできなかったものに関しては空白で返す |
| 112 | * |
| 113 | * @return array |
| 114 | */ |
| 115 | public function get_request_items(): array { |
| 116 | $request_items = array( |
| 117 | 'access_at' => current_time( 'mysql' ), |
| 118 | 'ip' => $this->get_client_ip(), |
| 119 | self::VARIABLE_XML => $this->xml_parser(), |
| 120 | self::VARIABLE_REQUEST_FILENAME => $this->get_request_uri(), |
| 121 | self::VARIABLE_REQUEST_HEADERS => $this->get_http_request_headers(), |
| 122 | self::VARIABLE_ARGS => $this->get_request_args_data(), |
| 123 | self::VARIABLE_REQUEST_COOKIES => $this->get_request_cookies(), |
| 124 | ); |
| 125 | |
| 126 | return $request_items; |
| 127 | } |
| 128 | |
| 129 | |
| 130 | /** |
| 131 | * ルールの設定を参考に1つのリクエスト� |
| 132 | 報に対して複数の変換を行う処理 |
| 133 | * |
| 134 | * @param array $transformations |
| 135 | * @param string $request_item |
| 136 | * @return string |
| 137 | */ |
| 138 | public function transform( $transformations, $request_item ): string { |
| 139 | $converted_request_item = $request_item; |
| 140 | |
| 141 | foreach ( $transformations as $transformation ) { |
| 142 | switch ( $transformation ) { |
| 143 | case 'htmlentitydecode': |
| 144 | $converted_request_item = html_entity_decode( $converted_request_item, ENT_QUOTES, 'utf-8' ); |
| 145 | break; |
| 146 | case 'lowercase': |
| 147 | $converted_request_item = strtolower( $converted_request_item ); |
| 148 | break; |
| 149 | case 'replacecomments': |
| 150 | $converted_request_item = preg_replace( '/(\/\*.*?\*\/|\/\*.*(?!\*\/).*)/s', ' ', $converted_request_item ); |
| 151 | break; |
| 152 | case 'compresswhitespace': |
| 153 | $converted_request_item = preg_replace( '/(\s|\xa0)/s', ' ', $converted_request_item ); |
| 154 | $converted_request_item = preg_replace( '/\s{2,}/s', ' ', $converted_request_item ); |
| 155 | break; |
| 156 | default: |
| 157 | $converted_request_item = '変換に失敗しました'; |
| 158 | break 2; |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | return $converted_request_item; |
| 163 | } |
| 164 | |
| 165 | |
| 166 | /** |
| 167 | * LocationMatch設定によるルールのスキップ用関数 |
| 168 | * |
| 169 | * @param array $locationmatch_rules |
| 170 | * @param string $request_uri |
| 171 | * @return array |
| 172 | */ |
| 173 | public function locationmatch_remove_rules( $locationmatch_rules, $request_uri ): array { |
| 174 | $locationmatch_removed_rule_ids = array(); |
| 175 | |
| 176 | foreach ( $locationmatch_rules as $locationmatch_rule ) { |
| 177 | if ( preg_match( '/' . $locationmatch_rule['path'] . '/', $request_uri ) ) { |
| 178 | $locationmatch_removed_rule_ids = array_merge( $locationmatch_removed_rule_ids, $locationmatch_rule['remove_rule_ids'] ); |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | $locationmatch_removed_rule_ids = array_unique( $locationmatch_removed_rule_ids ); |
| 183 | |
| 184 | return $locationmatch_removed_rule_ids; |
| 185 | } |
| 186 | |
| 187 | |
| 188 | /** |
| 189 | * skip表記の存在確認 |
| 190 | * |
| 191 | * @param int $skip |
| 192 | * @return int |
| 193 | */ |
| 194 | public function check_skip( $skip ): int { |
| 195 | if ( $skip !== 0 ) { |
| 196 | return $skip; |
| 197 | } else { |
| 198 | return 0; |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | |
| 203 | /** |
| 204 | * skipafter表記の存在確認 |
| 205 | * |
| 206 | * @param string $skipafter |
| 207 | * @return string |
| 208 | */ |
| 209 | public function check_skipafter( $skipafter ): string { |
| 210 | if ( ! empty( $skipafter ) ) { |
| 211 | return $skipafter; |
| 212 | } else { |
| 213 | return ''; |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | |
| 218 | /** |
| 219 | * skipが有効か判定 |
| 220 | * |
| 221 | * @param int $skip |
| 222 | * @return bool |
| 223 | */ |
| 224 | public function is_skip_enabled( $skip ): bool { |
| 225 | if ( 0 < $skip ) { |
| 226 | return true; |
| 227 | } else { |
| 228 | return false; |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | |
| 233 | /** |
| 234 | * skipafterが有効か判定 |
| 235 | * |
| 236 | * @param string $skipafter |
| 237 | * @return bool |
| 238 | */ |
| 239 | public function is_skipafter_enabled( $skipafter ): bool { |
| 240 | if ( ! empty( $skipafter ) ) { |
| 241 | return true; |
| 242 | } else { |
| 243 | return false; |
| 244 | } |
| 245 | } |
| 246 | |
| 247 | /** |
| 248 | * ルールが終了したか判定 |
| 249 | * |
| 250 | * @param string $chain |
| 251 | * @param string $skip |
| 252 | * @param string $skipafter |
| 253 | * @return bool |
| 254 | */ |
| 255 | public function is_rule_finished( $chain, $skip, $skipafter ): bool { |
| 256 | if ( ! empty( $chain ) || $this->is_skip_enabled( $skip ) || $this->is_skipafter_enabled( $skipafter ) ) { |
| 257 | return false; |
| 258 | } else { |
| 259 | return true; |
| 260 | } |
| 261 | } |
| 262 | |
| 263 | |
| 264 | /** |
| 265 | * ルール� |
| 266 | に除外の表記があるか確認 |
| 267 | * |
| 268 | * @param array $remove_variables |
| 269 | * @param string $variable |
| 270 | * @param string $request_item |
| 271 | * @return bool |
| 272 | */ |
| 273 | public function is_remove_variables( $remove_variables, $variable, $request_item ): bool { |
| 274 | if ( ! empty( $remove_variables ) ) { |
| 275 | foreach ( $remove_variables as $remove_variable => $remove_values ) { |
| 276 | if ( $remove_variable === $variable ) { |
| 277 | foreach ( $remove_values as $remove_value ) { |
| 278 | |
| 279 | // REQUEST_HEADERSの場合は大文字小文字関係なく判定する |
| 280 | if ( $variable === self::VARIABLE_REQUEST_HEADERS ) { |
| 281 | if ( preg_match( '/' . $remove_value . '/i', $request_item ) ) { |
| 282 | return true; |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | if ( preg_match( '/^\/.+\/$/', $remove_value ) ) { |
| 287 | // 除外の値が部分一致(/で囲まれているもの)の場合 |
| 288 | if ( preg_match( $remove_value . 's', $request_item ) ) { |
| 289 | return true; |
| 290 | } |
| 291 | } else { |
| 292 | // 除外の値が完� |
| 293 | �一致の場合 |
| 294 | if ( $remove_value === $request_item ) { |
| 295 | return true; |
| 296 | } |
| 297 | } |
| 298 | } |
| 299 | } |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | return false; |
| 304 | } |
| 305 | |
| 306 | /** |
| 307 | * マッチした結果を� |
| 308 | �列に格納 |
| 309 | * |
| 310 | * @param array $rule |
| 311 | * @param array $request_items |
| 312 | * @param string $variable |
| 313 | * @param string $match_string |
| 314 | * @return array |
| 315 | */ |
| 316 | public function get_match_results( $rule, $request_items, $variable, $match_string ): array { |
| 317 | |
| 318 | if ( isset( $_SERVER['HTTP_HOST'] ) && isset( $_SERVER['REQUEST_URI'] ) ) { |
| 319 | $complete_url = ( empty( $_SERVER['HTTPS'] ) ? 'http://' : 'https://' ) |
| 320 | . sanitize_text_field( wp_unslash( $_SERVER['HTTP_HOST'] ) ) |
| 321 | . esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ) ); |
| 322 | } else { |
| 323 | $complete_url = ''; |
| 324 | } |
| 325 | |
| 326 | $match_results = array( |
| 327 | 'id' => $rule['id'], |
| 328 | 'attack' => $rule['attack'], |
| 329 | 'variable' => $variable, |
| 330 | 'matched' => $match_string, |
| 331 | 'ip' => $request_items['ip'], |
| 332 | 'access_at' => $request_items['access_at'], |
| 333 | 'url' => $complete_url, |
| 334 | ); |
| 335 | |
| 336 | return $match_results; |
| 337 | } |
| 338 | |
| 339 | |
| 340 | /** |
| 341 | * chain_itemsの取得 |
| 342 | * |
| 343 | * @param array $rule |
| 344 | * @return array |
| 345 | */ |
| 346 | public function get_chain_items( $rule ): array { |
| 347 | $chain_items = array( |
| 348 | 'id' => $rule['id'], |
| 349 | 'attack' => $rule['attack'], |
| 350 | 'skip' => $rule['skip'], |
| 351 | 'skipafter' => $rule['skipafter'], |
| 352 | ); |
| 353 | |
| 354 | return $chain_items; |
| 355 | } |
| 356 | |
| 357 | |
| 358 | /** |
| 359 | * マッチしたルールの設定、結果を取得 |
| 360 | * |
| 361 | * @param array $waf_rule |
| 362 | * @param array $request_items |
| 363 | * @param string $variable |
| 364 | * @param array $chain_items |
| 365 | * @param array $match_string |
| 366 | * @return array |
| 367 | */ |
| 368 | public function get_rule_settings_and_results( $waf_rule, $request_items, $variable, $chain_items, $match_string ): array { |
| 369 | $results = array( |
| 370 | 'is_matched' => true, |
| 371 | 'chain_items' => array(), |
| 372 | 'skip' => 0, |
| 373 | 'skipafter' => '', |
| 374 | 'match_results' => array(), |
| 375 | ); |
| 376 | |
| 377 | // 前ルールからchainの設定を引き継いでいるか確認 |
| 378 | if ( ! empty( $chain_items ) ) { |
| 379 | if ( $waf_rule['attack'] === '' && $this->is_rule_finished( $waf_rule['chain'], $waf_rule['skip'], $waf_rule['skipafter'] ) ) { |
| 380 | // 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 |
| 381 | $results['is_matched'] = false; |
| 382 | |
| 383 | } elseif ( $this->is_rule_finished( $waf_rule['chain'], $chain_items['skip'], $chain_items['skipafter'] ) ) { |
| 384 | $results['match_results'] = $this->get_match_results( $chain_items, $request_items, $variable, $match_string ); |
| 385 | |
| 386 | } elseif ( $waf_rule['chain'] ) { |
| 387 | // 現在のルールにchainの設定がある場合 |
| 388 | $results['chain_items'] = $chain_items; |
| 389 | |
| 390 | } else { |
| 391 | $results['skip'] = $this->check_skip( $chain_items['skip'] ); |
| 392 | $results['skipafter'] = $this->check_skipafter( $chain_items['skipafter'] ); |
| 393 | } |
| 394 | } else { |
| 395 | if ( $waf_rule['attack'] === '' && $this->is_rule_finished( $waf_rule['chain'], $waf_rule['skip'], $waf_rule['skipafter'] ) ) { |
| 396 | // 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 |
| 397 | $results['is_matched'] = false; |
| 398 | |
| 399 | } elseif ( $this->is_rule_finished( $waf_rule['chain'], $waf_rule['skip'], $waf_rule['skipafter'] ) ) { |
| 400 | $results['match_results'] = $this->get_match_results( $waf_rule, $request_items, $variable, $match_string ); |
| 401 | |
| 402 | } elseif ( $waf_rule['chain'] ) { |
| 403 | // 現在のルールにchainの設定がある場合 |
| 404 | $results['chain_items'] = $this->get_chain_items( $waf_rule ); |
| 405 | |
| 406 | } else { |
| 407 | $results['skip'] = $this->check_skip( $waf_rule['skip'] ); |
| 408 | $results['skipafter'] = $this->check_skipafter( $waf_rule['skipafter'] ); |
| 409 | } |
| 410 | } |
| 411 | return $results; |
| 412 | } |
| 413 | |
| 414 | /** |
| 415 | * ネストした� |
| 416 | �列をパース |
| 417 | * |
| 418 | * @param string $name |
| 419 | * @param array $array |
| 420 | */ |
| 421 | public function parse_array( $name, $array ) { |
| 422 | $parsed_array = array(); |
| 423 | |
| 424 | foreach ( $array as $key => $val ) { |
| 425 | if ( is_array( $val ) ) { |
| 426 | $tmp_name = $name . '[' . $key . ']'; |
| 427 | $tmp_parsed_array = $this->parse_array( $tmp_name, $val ); |
| 428 | $parsed_array = array_merge( $parsed_array, $tmp_parsed_array ); |
| 429 | |
| 430 | } else { |
| 431 | $parsed_array_key = $name . '[' . $key . ']'; |
| 432 | $parsed_array[ $parsed_array_key ] = $val ?? ''; |
| 433 | } |
| 434 | } |
| 435 | return $parsed_array; |
| 436 | } |
| 437 | |
| 438 | |
| 439 | /** |
| 440 | * リクエスト� |
| 441 | 報� |
| 442 | �列を使用するルール判定 |
| 443 | * |
| 444 | * @param array $waf_rule |
| 445 | * @param array $request_items |
| 446 | * @param string $variable |
| 447 | * @param array $chain_items |
| 448 | * @return array |
| 449 | */ |
| 450 | public function check_request_item_array( $waf_rule, $request_items, $variable, $chain_items ) { |
| 451 | $results = array( |
| 452 | 'is_matched' => false, |
| 453 | 'chain_items' => array(), |
| 454 | 'skip' => 0, |
| 455 | 'skipafter' => '', |
| 456 | 'match_results' => array(), |
| 457 | ); |
| 458 | |
| 459 | $get_request_item_variable = preg_replace( '/_names/', '', $variable ); |
| 460 | |
| 461 | if ( ! isset( $get_request_item_variable ) ) { |
| 462 | return $results; |
| 463 | } |
| 464 | |
| 465 | foreach ( $request_items[ $get_request_item_variable ] as $key => $val ) { |
| 466 | |
| 467 | if ( ! isset( $val ) ) { |
| 468 | $val = ''; |
| 469 | } |
| 470 | |
| 471 | switch ( $variable ) { |
| 472 | case self::VARIABLE_ARGS: |
| 473 | case self::VARIABLE_REQUEST_COOKIES: |
| 474 | case self::VARIABLE_REQUEST_HEADERS: |
| 475 | if ( is_array( $val ) ) { |
| 476 | $parsed_vals = $this->parse_array( $key, $val ); |
| 477 | |
| 478 | foreach ( $parsed_vals as $key => $val ) { |
| 479 | $checked_request_item = $this->check_request_item_value( $waf_rule, $key, $val, $variable ); |
| 480 | |
| 481 | if ( $checked_request_item['is_matched'] ) { |
| 482 | $results = $this->get_rule_settings_and_results( $waf_rule, $request_items, $variable, $chain_items, $checked_request_item['match_string'] ); |
| 483 | break; |
| 484 | } |
| 485 | } |
| 486 | } else { |
| 487 | $checked_request_item = $this->check_request_item_value( $waf_rule, $key, $val, $variable ); |
| 488 | } |
| 489 | |
| 490 | break; |
| 491 | |
| 492 | case self::VARIABLE_ARGS_NAMES: |
| 493 | case self::VARIABLE_REQUEST_COOKIES_NAMES: |
| 494 | $checked_request_item = $this->check_request_item_key( $waf_rule, $key, $variable ); |
| 495 | break; |
| 496 | } |
| 497 | |
| 498 | if ( $checked_request_item['is_matched'] ) { |
| 499 | $results = $this->get_rule_settings_and_results( $waf_rule, $request_items, $variable, $chain_items, $checked_request_item['match_string'] ); |
| 500 | |
| 501 | break; |
| 502 | } |
| 503 | } |
| 504 | return $results; |
| 505 | } |
| 506 | |
| 507 | |
| 508 | |
| 509 | /** |
| 510 | * リクエスト� |
| 511 | 報� |
| 512 | �列のうちvalueの値を使用するルール判定 |
| 513 | * |
| 514 | * @param array $waf_rule |
| 515 | * @param string $request_items_key |
| 516 | * @param string $request_items_value |
| 517 | * @param string $variable |
| 518 | * @return array |
| 519 | */ |
| 520 | public function check_request_item_value( $waf_rule, $request_items_key, $request_items_value, $variable ): array { |
| 521 | $results = array( |
| 522 | 'is_matched' => false, |
| 523 | 'match_string' => '', |
| 524 | ); |
| 525 | $matches = array(); |
| 526 | |
| 527 | // リクエスト� |
| 528 | 報� |
| 529 | �列のkeyとvalueの変換 |
| 530 | $tmp_key = $this->transform( $waf_rule['transformations'], $request_items_key ); |
| 531 | $tmp_val = $this->transform( $waf_rule['transformations'], $request_items_value ); |
| 532 | |
| 533 | if ( preg_match( '/' . $waf_rule['regex_pattern'] . '/s', $tmp_val, $matches ) ) { |
| 534 | if ( ! empty( $matches ) ) { |
| 535 | if ( false === $this->is_remove_variables( $waf_rule['remove_variables'], $variable, $tmp_key ) ) { |
| 536 | // 除外の設定が無ければマッチしたと判定 |
| 537 | $results['is_matched'] = true; |
| 538 | $results['match_string'] = $matches[0]; |
| 539 | } |
| 540 | } |
| 541 | } |
| 542 | |
| 543 | return $results; |
| 544 | } |
| 545 | |
| 546 | |
| 547 | /** |
| 548 | * リクエスト� |
| 549 | 報� |
| 550 | �列のうちkeyの値を使用するルール判定 |
| 551 | * |
| 552 | * @param array $waf_rule |
| 553 | * @param string $request_items_key |
| 554 | * @param string $variable |
| 555 | * @return array |
| 556 | */ |
| 557 | public function check_request_item_key( $waf_rule, $request_items_key, $variable ): array { |
| 558 | $results = array( |
| 559 | 'is_matched' => false, |
| 560 | 'match_string' => '', |
| 561 | ); |
| 562 | $matches = array(); |
| 563 | |
| 564 | // リクエスト� |
| 565 | 報� |
| 566 | �列のkeyの変換 |
| 567 | $tmp_key = $this->transform( $waf_rule['transformations'], $request_items_key ); |
| 568 | |
| 569 | if ( preg_match( '/' . $waf_rule['regex_pattern'] . '/s', $tmp_key, $matches ) ) { |
| 570 | if ( ! empty( $matches ) ) { |
| 571 | if ( false === $this->is_remove_variables( $waf_rule['remove_variables'], $variable, $tmp_key ) ) { |
| 572 | // 除外の設定が無ければマッチしたと判定 |
| 573 | $results['is_matched'] = true; |
| 574 | $results['match_string'] = $matches[0]; |
| 575 | } |
| 576 | } |
| 577 | } |
| 578 | |
| 579 | return $results; |
| 580 | } |
| 581 | |
| 582 | |
| 583 | /** |
| 584 | * リクエスト� |
| 585 | 報� |
| 586 | �列のうち文字列の値を使用するルール判定 |
| 587 | * |
| 588 | * @param array $waf_rule |
| 589 | * @param array $request_items |
| 590 | * @param string $variable |
| 591 | * @param array $chain_items |
| 592 | * @return array |
| 593 | */ |
| 594 | public function check_request_item_strings( $waf_rule, $request_items, $variable, $chain_items ): array { |
| 595 | $results = array( |
| 596 | 'is_matched' => false, |
| 597 | 'chain_items' => array(), |
| 598 | 'skip' => 0, |
| 599 | 'skipafter' => '', |
| 600 | 'match_results' => array(), |
| 601 | ); |
| 602 | |
| 603 | if ( empty( $request_items[ $variable ] ) ) { |
| 604 | return $results; |
| 605 | } |
| 606 | |
| 607 | if ( $variable === self::VARIABLE_XML ) { |
| 608 | if ( $request_items[ self::VARIABLE_XML ] === 'xml_parse_failed' ) { |
| 609 | return $results; |
| 610 | } else { |
| 611 | $request_items[ self::VARIABLE_XML ] = str_replace( 'xml_parse_failed', '', $request_items[ self::VARIABLE_XML ] ); |
| 612 | } |
| 613 | } |
| 614 | |
| 615 | // リクエスト� |
| 616 | 報の変換 |
| 617 | $tmp_string = $this->transform( $waf_rule['transformations'], $request_items[ $variable ] ); |
| 618 | |
| 619 | // 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 |
| 620 | if ( $variable === self::VARIABLE_REQUEST_FILENAME ) { |
| 621 | // リクエスト� |
| 622 | 報のデコード&変換 |
| 623 | $request_items_urldecoded = urldecode( $request_items[ $variable ] ); |
| 624 | $tmp_urldecoded = $this->transform( $waf_rule['transformations'], $request_items_urldecoded ); |
| 625 | |
| 626 | if ( preg_match( '/' . $waf_rule['regex_pattern'] . '/s', $tmp_urldecoded, $matches ) ) { |
| 627 | if ( ! empty( $matches ) ) { |
| 628 | $results = $this->get_rule_settings_and_results( $waf_rule, $request_items, $variable, $chain_items, $matches[0] ); |
| 629 | return $results; |
| 630 | } |
| 631 | } |
| 632 | } |
| 633 | |
| 634 | if ( false === preg_match( '/' . $waf_rule['regex_pattern'] . '/s', $tmp_string, $matches ) ) { |
| 635 | // preg_matchが失敗したときは終了 |
| 636 | return $results; |
| 637 | } |
| 638 | |
| 639 | if ( empty( $matches ) ) { |
| 640 | // 正規表現パターンにマッチしなければ終了 |
| 641 | return $results; |
| 642 | } |
| 643 | |
| 644 | $results = $this->get_rule_settings_and_results( $waf_rule, $request_items, $variable, $chain_items, $matches[0] ); |
| 645 | |
| 646 | return $results; |
| 647 | } |
| 648 | |
| 649 | |
| 650 | /** |
| 651 | * 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） |
| 652 | * |
| 653 | * @param array $request_items |
| 654 | * @return string |
| 655 | */ |
| 656 | public function get_rest_endpoint( $request_items ): string { |
| 657 | // 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 |
| 658 | if ( isset( $request_items['args']['rest_route'] ) && is_string( $request_items['args']['rest_route'] ) ) { |
| 659 | return $request_items['args']['rest_route']; |
| 660 | } |
| 661 | |
| 662 | // その他のパーマリンク設定の場合はrequest_filenameを使用 |
| 663 | return $request_items['request_filename']; |
| 664 | } |
| 665 | |
| 666 | |
| 667 | /** |
| 668 | * 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 |
| 669 | * |
| 670 | * @param string $rule_id |
| 671 | * @param array $request_items |
| 672 | * @param array $remove_rules |
| 673 | * @return array |
| 674 | */ |
| 675 | public function is_remove_rule( $rule_id, $request_items, $remove_rules, $acf_post_types, $cptui_post_types ): array { |
| 676 | $is_rule_removed = false; |
| 677 | $modify_remove_variables = array(); |
| 678 | |
| 679 | if ( isset( $remove_rules['woocommerce'] ) ) { |
| 680 | if ( in_array( $rule_id, $remove_rules['woocommerce'], true ) ) { |
| 681 | $sbjs_cookie_keys = preg_grep( '/^sbjs_.+/', array_keys( $request_items['request_cookies'] ) ); |
| 682 | |
| 683 | // sourcebusterの除外（woocommerce） |
| 684 | if ( ! empty( $sbjs_cookie_keys ) ) { |
| 685 | foreach ( $sbjs_cookie_keys as $key ) { |
| 686 | 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 ) { |
| 687 | $is_rule_removed = true; |
| 688 | break; |
| 689 | } |
| 690 | } |
| 691 | } |
| 692 | } |
| 693 | } |
| 694 | |
| 695 | if ( isset( $remove_rules['ajax_customize'] ) ) { |
| 696 | // カスタマイズ操作、オートセーブ時の除外 |
| 697 | if ( preg_match( '/wp-admin\/customize\.php|customize_changeset_uuid/', $_SERVER['HTTP_REFERER'] ?? '' ) === 1 ) { |
| 698 | if ( in_array( $rule_id, $remove_rules['ajax_customize'], true ) ) { |
| 699 | if ( ( $request_items['args']['customize_autosaved'] ?? '' ) === 'on' || ( $request_items['args']['wp_customize'] ?? '' ) === 'on' ) { |
| 700 | $action = $request_items['args']['action'] ?? ''; |
| 701 | if ( $action === 'update-widget' ) { |
| 702 | // actionがupdate-widgetの場合はルール� |
| 703 | �体を除外（cocoon） |
| 704 | $is_rule_removed = true; |
| 705 | } else { |
| 706 | // それ以外の場合はcustomized, customize_changeset_dataキーのみ除外 |
| 707 | $modify_remove_variables['args'] = array( 'customized', 'customize_changeset_data' ); |
| 708 | } |
| 709 | } |
| 710 | } |
| 711 | // ウィジェット保存時（cocoonテーマ）の除外 |
| 712 | } elseif ( preg_match( '/wp-admin\/widgets\.php/', $_SERVER['HTTP_REFERER'] ?? '' ) === 1 ) { |
| 713 | if ( in_array( $rule_id, $remove_rules['ajax_customize'], true ) ) { |
| 714 | if ( ( $request_items['args']['action'] ?? '' ) === 'save-widget' ) { |
| 715 | $is_rule_removed = true; |
| 716 | } |
| 717 | } |
| 718 | // メニュー操作時（cocoonテーマ）の除外 |
| 719 | } elseif ( preg_match( '/wp-admin\/nav-menus\.php/', $_SERVER['HTTP_REFERER'] ?? '' ) === 1 ) { |
| 720 | if ( in_array( $rule_id, $remove_rules['ajax_customize'], true ) ) { |
| 721 | $action = $request_items['args']['action'] ?? ''; |
| 722 | if ( $action === 'update' || $action === 'edit' ) { |
| 723 | $is_rule_removed = true; |
| 724 | } |
| 725 | } |
| 726 | } |
| 727 | } |
| 728 | |
| 729 | if ( isset( $remove_rules['rest_api'] ) ) { |
| 730 | $rest_endpoint = $this->get_rest_endpoint( $request_items ); |
| 731 | |
| 732 | // 投稿・編集（templates, blocks, template-parts, navigation, pages, posts）の場合はcontentキーを除外 |
| 733 | if ( preg_match( '/templates|blocks|template-parts|navigation|pages|posts/', $rest_endpoint ) === 1 ) { |
| 734 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 735 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 736 | $modify_remove_variables['args'] = array( 'content' ); |
| 737 | } |
| 738 | } |
| 739 | |
| 740 | // global-styles の場合はstylesキーを除外 |
| 741 | } elseif ( preg_match( '/global-styles/', $rest_endpoint ) === 1 ) { |
| 742 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 743 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 744 | $modify_remove_variables['args'] = array( '/^styles/' ); |
| 745 | } |
| 746 | } |
| 747 | |
| 748 | // batch の場合はrequestsキーを除外 |
| 749 | } elseif ( preg_match( '/batch/', $rest_endpoint ) === 1 ) { |
| 750 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 751 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 752 | $modify_remove_variables['args'] = array( '/^requests/' ); |
| 753 | } |
| 754 | } |
| 755 | |
| 756 | // 投稿・編集の操作は特定のルールを除外する(post.php) |
| 757 | } elseif ( preg_match( '/wp-admin\/post\.php/', $request_items['request_filename'] ) === 1 ) { |
| 758 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 759 | $action = $request_items['args']['action'] ?? ''; |
| 760 | if ( $action === 'editpost' ) { |
| 761 | $is_rule_removed = true; |
| 762 | } elseif ( $action === 'post-quickdraft-save' ) { |
| 763 | $modify_remove_variables['args'] = array( 'content' ); |
| 764 | } |
| 765 | } |
| 766 | |
| 767 | // カスタマイズ機能からの投稿作成時の除外 |
| 768 | } elseif ( preg_match( '/wp-admin\/customize\.php|customize_changeset_uuid/', $_SERVER['HTTP_REFERER'] ?? '' ) === 1 ) { |
| 769 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 770 | if ( ( $request_items['args']['customize_autosaved'] ?? '' ) === 'on' || ( $request_items['args']['wp_customize'] ?? '' ) === 'on' ) { |
| 771 | $action = $request_items['args']['action'] ?? ''; |
| 772 | if ( $action === 'customize-nav-menus-insert-auto-draft' ) { |
| 773 | $modify_remove_variables['args'] = array( '/^params/' ); |
| 774 | } |
| 775 | } |
| 776 | } |
| 777 | |
| 778 | // nishiki の場合はcontentキーを除外 |
| 779 | } elseif ( preg_match( '/wp\/v2\/nishiki_pro_(patterns|content)/', $rest_endpoint ) === 1 ) { |
| 780 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 781 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 782 | $modify_remove_variables['args'] = array( 'content' ); |
| 783 | } |
| 784 | } |
| 785 | |
| 786 | // xerite の場合はcontentキーを除外 |
| 787 | } elseif ( preg_match( '/wp\/v2\/xw_block_patterns/', $rest_endpoint ) === 1 ) { |
| 788 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 789 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 790 | $modify_remove_variables['args'] = array( 'content' ); |
| 791 | } |
| 792 | } |
| 793 | |
| 794 | // Lightning の場合はcontentキーを除外 |
| 795 | } elseif ( preg_match( '/wp\/v2\/(cta|vk-block-patterns)/', $rest_endpoint ) === 1 ) { |
| 796 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 797 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 798 | $modify_remove_variables['args'] = array( 'content' ); |
| 799 | } |
| 800 | } |
| 801 | |
| 802 | // SWELL の場合はcontentキーを除外 |
| 803 | } elseif ( preg_match( '/wp\/v2\/(lp|blog_parts)/', $rest_endpoint ) === 1 ) { |
| 804 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 805 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 806 | $modify_remove_variables['args'] = array( 'content' ); |
| 807 | } |
| 808 | } |
| 809 | |
| 810 | // Snow Monkey の場合はcontentキーを除外 |
| 811 | } elseif ( preg_match( '/wp\/v2\/snow-monkey-search/', $rest_endpoint ) === 1 ) { |
| 812 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 813 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 814 | $modify_remove_variables['args'] = array( 'content' ); |
| 815 | } |
| 816 | } |
| 817 | |
| 818 | // Advanced Custom Fields の場合はcontentキーを除外 |
| 819 | // 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 |
| 820 | } elseif ( ! empty( $acf_post_types ) && preg_match( '/wp\/v2\/(' . implode( '|', array_map( 'preg_quote', $acf_post_types ) ) . ')/', $rest_endpoint ) === 1 ) { |
| 821 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 822 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 823 | $modify_remove_variables['args'] = array( 'content' ); |
| 824 | } |
| 825 | } |
| 826 | |
| 827 | // Custom Post Type UI の場合はcontentキーを除外 |
| 828 | // 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 |
| 829 | } elseif ( ! empty( $cptui_post_types ) && preg_match( '/wp\/v2\/(' . implode( '|', array_map( 'preg_quote', $cptui_post_types ) ) . ')/', $rest_endpoint ) === 1 ) { |
| 830 | if ( in_array( $rule_id, $remove_rules['rest_api'], true ) ) { |
| 831 | if ( preg_match( '/_locale\=user/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 832 | $modify_remove_variables['args'] = array( 'content' ); |
| 833 | } |
| 834 | } |
| 835 | } |
| 836 | } |
| 837 | |
| 838 | // cocoonテーマでの除外処理（theme-func-text, theme-settings, theme-ranking, theme-affiliate-tag） |
| 839 | if ( isset( $remove_rules['cocoon'] ) ) { |
| 840 | $referer = $_SERVER['HTTP_REFERER'] ?? ''; |
| 841 | if ( preg_match( '/wp-admin\/admin\.php\?page\=theme-(func-text|settings|ranking|affiliate-tag)/', $referer ) === 1 ) { |
| 842 | if ( in_array( $rule_id, $remove_rules['cocoon'], true ) ) { |
| 843 | $action = $request_items['args']['action'] ?? ''; |
| 844 | if ( $action === 'new' || $action === 'edit' ) { |
| 845 | $is_rule_removed = true; |
| 846 | } |
| 847 | |
| 848 | if ( isset( $request_items['args']['comment_information_message'] ) ) { |
| 849 | $is_rule_removed = true; |
| 850 | } |
| 851 | } |
| 852 | } |
| 853 | } |
| 854 | |
| 855 | if ( isset( $remove_rules['emanon'] ) ) { |
| 856 | // emanonルール除外 |
| 857 | if ( preg_match( '/wp-admin\/admin.php\?page\=emanon_setting_page/', $_SERVER['HTTP_REFERER'] ?? '' ) === 1 ) { |
| 858 | if ( in_array( $rule_id, $remove_rules['emanon'], true ) ) { |
| 859 | if ( ( $request_items['args']['action'] ?? '' ) === 'delete_transients_emanon_setting' ) { |
| 860 | $is_rule_removed = true; |
| 861 | } |
| 862 | } |
| 863 | } |
| 864 | } |
| 865 | |
| 866 | if ( isset( $remove_rules['vkexunit'] ) ) { |
| 867 | // vkExUnitルール除外（メイン設定） |
| 868 | if ( preg_match( '/wp-admin\/admin.php\?page\=vkExUnit_main_setting/', $_SERVER['HTTP_REFERER'] ?? '' ) === 1 ) { |
| 869 | if ( in_array( $rule_id, $remove_rules['vkexunit'], true ) ) { |
| 870 | if ( preg_match( '/page\=vkExUnit_main_setting/', $_SERVER['QUERY_STRING'] ?? '' ) === 1 ) { |
| 871 | $is_rule_removed = true; |
| 872 | } |
| 873 | } |
| 874 | } |
| 875 | |
| 876 | // vkExUnitルール除外（cssカスタマイズ） |
| 877 | if ( preg_match( '/wp-admin\/admin.php\?page\=vkExUnit_css_customize/', $_SERVER['REQUEST_URI'] ?? '' ) === 1 ) { |
| 878 | if ( in_array( $rule_id, $remove_rules['vkexunit'], true ) ) { |
| 879 | $wp_http_referer = $request_items['args']['_wp_http_referer'] ?? ''; |
| 880 | if ( strpos( $wp_http_referer, '/wp-admin/admin.php?page=vkExUnit_css_customize' ) !== false ) { |
| 881 | $is_rule_removed = true; |
| 882 | } |
| 883 | } |
| 884 | } |
| 885 | } |
| 886 | |
| 887 | if ( isset( $remove_rules['nishiki'] ) ) { |
| 888 | // nishikiルール除外 |
| 889 | if ( preg_match( '/wp-admin\/admin.php\?page\=nishiki-pro-general\.php/', $_SERVER['HTTP_REFERER'] ?? '' ) === 1 ) { |
| 890 | if ( in_array( $rule_id, $remove_rules['nishiki'], true ) ) { |
| 891 | if ( ( $request_items['args']['action'] ?? '' ) === 'update' ) { |
| 892 | $is_rule_removed = true; |
| 893 | } |
| 894 | } |
| 895 | } |
| 896 | } |
| 897 | |
| 898 | if ( isset( $remove_rules['swell'] ) ) { |
| 899 | // swellルール除外 |
| 900 | if ( preg_match( '/wp-admin\/admin.php\?page\=swell_settings_editor/', $_SERVER['HTTP_REFERER'] ?? '' ) === 1 ) { |
| 901 | if ( in_array( $rule_id, $remove_rules['swell'], true ) ) { |
| 902 | if ( ( $request_items['args']['action'] ?? '' ) === 'update' ) { |
| 903 | $is_rule_removed = true; |
| 904 | } |
| 905 | } |
| 906 | } |
| 907 | } |
| 908 | |
| 909 | if ( isset( $remove_rules['comment'] ) ) { |
| 910 | // コメント編集時の除外 |
| 911 | if ( preg_match( '/wp-admin\/comment\.php/', $request_items['request_filename'] ?? '' ) === 1 ) { |
| 912 | if ( in_array( $rule_id, $remove_rules['comment'], true ) ) { |
| 913 | if ( ( $request_items['args']['action'] ?? '' ) === 'editedcomment' ) { |
| 914 | $is_rule_removed = true; |
| 915 | } |
| 916 | } |
| 917 | } |
| 918 | } |
| 919 | |
| 920 | if ( isset( $remove_rules['ajax_editor'] ) ) { |
| 921 | // テーマ・プラグインエディターの操作時の除外 |
| 922 | if ( preg_match( '/wp-admin\/admin-ajax\.php/', $request_items['request_filename'] ) === 1 ) { |
| 923 | if ( in_array( $rule_id, $remove_rules['ajax_editor'], true ) ) { |
| 924 | $wp_http_referer = $request_items['args']['_wp_http_referer'] ?? ''; |
| 925 | if ( preg_match( '/theme-editor(\.php)?|plugin-editor(\.php)?/', $wp_http_referer ) === 1 ) { |
| 926 | $is_rule_removed = true; |
| 927 | } |
| 928 | |
| 929 | // オートセーブ時 |
| 930 | $screen_id = $request_items['args']['screen_id'] ?? ''; |
| 931 | if ( preg_match( '/theme-editor(\.php)?|plugin-editor(\.php)?/', $screen_id ) === 1 ) { |
| 932 | $is_rule_removed = true; |
| 933 | } |
| 934 | } |
| 935 | } |
| 936 | } |
| 937 | return array( |
| 938 | 'is_removed' => $is_rule_removed, |
| 939 | 'modify_remove_variables' => $modify_remove_variables, |
| 940 | ); |
| 941 | } |
| 942 | |
| 943 | /** |
| 944 | * Advanced Custom Fieldsプラグイン除外対応 |
| 945 | * 有効なカスタム投稿タイプキーを取得する |
| 946 | * |
| 947 | * @return array |
| 948 | */ |
| 949 | public function get_acf_post_types(): array { |
| 950 | global $wpdb; |
| 951 | $active_plugins = get_option( 'active_plugins' ); |
| 952 | $acf_post_types = array(); |
| 953 | |
| 954 | if ( is_array( $active_plugins ) && preg_match( '/advanced-custom-fields/', implode( ',', $active_plugins ) ) ) { |
| 955 | $results = $wpdb->get_results( |
| 956 | $wpdb->prepare( |
| 957 | "SELECT post_content |
| 958 | FROM {$wpdb->posts} |
| 959 | WHERE post_type = %s |
| 960 | AND post_status = %s", |
| 961 | 'acf-post-type', |
| 962 | 'publish' |
| 963 | ) |
| 964 | ); |
| 965 | |
| 966 | if ( ! empty( $results ) ) { |
| 967 | foreach ( $results as $result ) { |
| 968 | $post_content = unserialize( $result->post_content, [ 'allowed_classes' => false ] ); |
| 969 | |
| 970 | if ( is_array( $post_content ) && isset( $post_content['post_type'] ) ) { |
| 971 | $acf_post_types[] = $post_content['post_type']; |
| 972 | } |
| 973 | } |
| 974 | } |
| 975 | } |
| 976 | |
| 977 | return $acf_post_types; |
| 978 | } |
| 979 | |
| 980 | |
| 981 | /** |
| 982 | * Custom Post Type UIプラグイン除外対応 |
| 983 | * 有効なカスタム投稿タイプキーを取得する |
| 984 | * |
| 985 | * @return array |
| 986 | */ |
| 987 | public function get_cptui_post_types(): array { |
| 988 | $active_plugins = get_option( 'active_plugins' ); |
| 989 | $cptui_post_types = array(); |
| 990 | |
| 991 | if ( is_array( $active_plugins ) && preg_match( '/custom-post-type-ui/', implode( ',', $active_plugins ) ) ) { |
| 992 | $cptui_data = get_option( 'cptui_post_types' ); |
| 993 | |
| 994 | if ( is_string( $cptui_data ) ) { |
| 995 | $cptui_data = unserialize( $cptui_data, [ 'allowed_classes' => false ] ); |
| 996 | } |
| 997 | |
| 998 | if ( is_array( $cptui_data ) ) { |
| 999 | foreach ( $cptui_data as $post_type ) { |
| 1000 | if ( is_array( $post_type ) && isset( $post_type['name'] ) ) { |
| 1001 | $cptui_post_types[] = $post_type['name']; |
| 1002 | } |
| 1003 | } |
| 1004 | } |
| 1005 | } |
| 1006 | |
| 1007 | return $cptui_post_types; |
| 1008 | } |
| 1009 | |
| 1010 | |
| 1011 | /** |
| 1012 | * waf_engine |
| 1013 | * |
| 1014 | * @param array $waf_rules |
| 1015 | * @param array $locationmatch_rules |
| 1016 | * @param int $available_rules |
| 1017 | * @param array $remove_rules |
| 1018 | * @return array |
| 1019 | */ |
| 1020 | public function waf_engine( $waf_rules, $locationmatch_rules, $available_rules, $remove_rules ): array { |
| 1021 | $request_items = $this->get_request_items(); |
| 1022 | |
| 1023 | $locationmatch_removed_rule_ids = $this->locationmatch_remove_rules( $locationmatch_rules, $_SERVER['REQUEST_URI'] ?? '' ); |
| 1024 | $skip = 0; |
| 1025 | $skipafter = ''; |
| 1026 | $chain_items = array(); |
| 1027 | $tmp_match_results = array(); |
| 1028 | |
| 1029 | // Advanced Custom Fieldsプラグイン除外対応で追加 |
| 1030 | $acf_post_types = $this->get_acf_post_types(); |
| 1031 | // Custom Post Type UIプラグイン除外対応で追加 |
| 1032 | $cptui_post_types = $this->get_cptui_post_types(); |
| 1033 | |
| 1034 | foreach ( $waf_rules as $waf_rule ) { |
| 1035 | // 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 |
| 1036 | if ( $this->is_skip_enabled( $skip ) ) { |
| 1037 | $skip--; |
| 1038 | continue; |
| 1039 | } |
| 1040 | |
| 1041 | // 前回マッチしたルールからskipafterの設定を引き継いでいる場合は現在のルールIDと比較し、一致するまでスキップ |
| 1042 | // ルールIDの比較結果が同じの場合は、$skipafterを初期化して次のルールから判定を行う |
| 1043 | if ( $this->is_skipafter_enabled( $skipafter ) ) { |
| 1044 | if ( $skipafter !== $waf_rule['id'] ) { |
| 1045 | continue; |
| 1046 | } else { |
| 1047 | $skipafter = ''; |
| 1048 | continue; |
| 1049 | } |
| 1050 | } |
| 1051 | |
| 1052 | // 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 |
| 1053 | if ( ! empty( $locationmatch_removed_rule_ids ) ) { |
| 1054 | if ( in_array( $waf_rule['id'], $locationmatch_removed_rule_ids, true ) ) { |
| 1055 | continue; |
| 1056 | } |
| 1057 | } |
| 1058 | |
| 1059 | // 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 |
| 1060 | if ( empty( $waf_rule['variables'] ) ) { |
| 1061 | $skip = $this->check_skip( $waf_rule['skip'] ); |
| 1062 | $skipafter = $this->check_skipafter( $waf_rule['skipafter'] ); |
| 1063 | continue; |
| 1064 | } |
| 1065 | |
| 1066 | // 特定の操作の場合、特定のルールを除外する |
| 1067 | $remove_rule_result = $this->is_remove_rule( $waf_rule['id'], $request_items, $remove_rules, $acf_post_types, $cptui_post_types ); |
| 1068 | |
| 1069 | if ( $remove_rule_result['is_removed'] ) { |
| 1070 | continue; |
| 1071 | } |
| 1072 | |
| 1073 | // ルールのremove_variablesを動的に変更 |
| 1074 | if ( ! empty( $remove_rule_result['modify_remove_variables'] ) ) { |
| 1075 | $waf_rule['remove_variables'] = array_merge_recursive( |
| 1076 | $waf_rule['remove_variables'], |
| 1077 | $remove_rule_result['modify_remove_variables'] |
| 1078 | ); |
| 1079 | } |
| 1080 | |
| 1081 | foreach ( $waf_rule['variables'] as $variable ) { |
| 1082 | switch ( $variable ) { |
| 1083 | case self::VARIABLE_ARGS: |
| 1084 | $results = $this->check_request_item_array( $waf_rule, $request_items, self::VARIABLE_ARGS, $chain_items ); |
| 1085 | break; |
| 1086 | |
| 1087 | case self::VARIABLE_ARGS_NAMES: |
| 1088 | $results = $this->check_request_item_array( $waf_rule, $request_items, self::VARIABLE_ARGS_NAMES, $chain_items ); |
| 1089 | break; |
| 1090 | |
| 1091 | case self::VARIABLE_REQUEST_COOKIES: |
| 1092 | $results = $this->check_request_item_array( $waf_rule, $request_items, self::VARIABLE_REQUEST_COOKIES, $chain_items ); |
| 1093 | break; |
| 1094 | |
| 1095 | case self::VARIABLE_REQUEST_COOKIES_NAMES: |
| 1096 | $results = $this->check_request_item_array( $waf_rule, $request_items, self::VARIABLE_REQUEST_COOKIES_NAMES, $chain_items ); |
| 1097 | break; |
| 1098 | |
| 1099 | case self::VARIABLE_REQUEST_HEADERS: |
| 1100 | $results = $this->check_request_item_array( $waf_rule, $request_items, self::VARIABLE_REQUEST_HEADERS, $chain_items ); |
| 1101 | break; |
| 1102 | |
| 1103 | case self::VARIABLE_REQUEST_FILENAME: |
| 1104 | $results = $this->check_request_item_strings( $waf_rule, $request_items, self::VARIABLE_REQUEST_FILENAME, $chain_items ); |
| 1105 | break; |
| 1106 | |
| 1107 | case self::VARIABLE_XML: |
| 1108 | $results = $this->check_request_item_strings( $waf_rule, $request_items, self::VARIABLE_XML, $chain_items ); |
| 1109 | break; |
| 1110 | } |
| 1111 | |
| 1112 | $is_matched = $results['is_matched']; |
| 1113 | |
| 1114 | if ( $is_matched ) { |
| 1115 | $skip = $results['skip']; |
| 1116 | $skipafter = $results['skipafter']; |
| 1117 | $chain_items = $results['chain_items']; |
| 1118 | $match_results = $results['match_results']; |
| 1119 | |
| 1120 | // 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 |
| 1121 | if ( ! empty( $chain_items ) || 0 < $skip || ! empty( $skipafter ) ) { |
| 1122 | break; |
| 1123 | } |
| 1124 | |
| 1125 | // 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 |
| 1126 | if ( ( $waf_rule['attack'] & $available_rules ) === 0 ) { |
| 1127 | $tmp_match_results = $match_results; |
| 1128 | break; |
| 1129 | } |
| 1130 | |
| 1131 | // 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） |
| 1132 | if ( ! empty( $match_results ) ) { |
| 1133 | $match_results['is_deny'] = true; |
| 1134 | $match_results['is_write_log'] = true; |
| 1135 | |
| 1136 | return $match_results; |
| 1137 | } |
| 1138 | } |
| 1139 | |
| 1140 | $chain_items = array(); |
| 1141 | } |
| 1142 | } |
| 1143 | |
| 1144 | if ( ! empty( $tmp_match_results ) ) { |
| 1145 | $match_results = $tmp_match_results; |
| 1146 | $match_results['is_deny'] = false; |
| 1147 | $match_results['is_write_log'] = true; |
| 1148 | |
| 1149 | } else { |
| 1150 | $match_results['is_deny'] = false; |
| 1151 | $match_results['is_write_log'] = false; |
| 1152 | } |
| 1153 | |
| 1154 | return $match_results; |
| 1155 | } |
| 1156 | } |
| 1157 |