admin
4 months ago
cli
8 months ago
lib
4 months ago
captcha.php
3 months ago
cloudsecure-wp.php
3 months ago
common.php
4 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
1 year ago
disable-restapi.php
7 months ago
disable-xmlrpc.php
1 year ago
htaccess.php
5 months ago
login-log.php
4 months ago
login-notification.php
1 year ago
rename-login-page.php
1 year ago
restrict-admin-page.php
10 months ago
server-error-notification.php
1 year ago
two-factor-authentication.php
4 months ago
unify-messages.php
2 years ago
update-notice.php
7 months ago
waf-engine.php
4 months ago
waf.php
4 months ago
captcha.php
399 lines
| 1 | <?php |
| 2 | |
| 3 | if ( ! defined( 'ABSPATH' ) ) { |
| 4 | exit; |
| 5 | } |
| 6 | |
| 7 | class CloudSecureWP_CAPTCHA extends CloudSecureWP_Common { |
| 8 | private const KEY_FEATURE = 'captcha'; |
| 9 | private const KEY_LOGIN = self::KEY_FEATURE . '_login'; |
| 10 | private const KEY_COMMENT = self::KEY_FEATURE . '_comment'; |
| 11 | private const KEY_LOST_PASSWORD = self::KEY_FEATURE . '_lost_password'; |
| 12 | private const KEY_REGISTER = self::KEY_FEATURE . '_register'; |
| 13 | private const LOGIN_VALUES = array( 1, 2 ); // 無効, 有効 . |
| 14 | private const COMMENT_VALUES = array( 1, 2 ); // 無効, 有効 . |
| 15 | private const LOST_PASSWORD_VALUES = array( 1, 2 ); // 無効, 有効 . |
| 16 | private const REGISTER_VALUES = array( 1, 2 ); // 無効, 有効 . |
| 17 | private const ERROR_CODE = 'cloudsecurewp_captcha_error'; |
| 18 | private const CAPTCHA_FORM_NAME = 'cloudsecurewp_captcha'; |
| 19 | private const PREFIX_FORM_NAME = 'cloudsecurewp_captcha_prefix'; |
| 20 | private const CAPTCHA_ERROR_MESSAGE = 'エラー：画像認証に失敗しました'; |
| 21 | |
| 22 | private $config; |
| 23 | private $captcha; |
| 24 | private $allowed_html; |
| 25 | private $comment_captcha_displayed = false; |
| 26 | |
| 27 | function __construct( array $info, CloudSecureWP_Config $config ) { |
| 28 | parent::__construct( $info ); |
| 29 | $this->config = $config; |
| 30 | $this->captcha = new CloudSecureWP_ReallySimpleCaptcha(); |
| 31 | $this->allowed_html = array( |
| 32 | 'p' => array( |
| 33 | 'class' => array(), |
| 34 | ), |
| 35 | 'style' => array(), |
| 36 | 'label' => array( |
| 37 | 'for' => array(), |
| 38 | ), |
| 39 | 'img' => array( |
| 40 | 'src' => array(), |
| 41 | 'alt' => array(), |
| 42 | ), |
| 43 | 'input' => array( |
| 44 | 'type' => array(), |
| 45 | 'id' => array(), |
| 46 | 'name' => array(), |
| 47 | 'class' => array(), |
| 48 | 'value' => array(), |
| 49 | 'size' => array(), |
| 50 | 'aria-required' => array(), |
| 51 | ), |
| 52 | ); |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * 機能毎のKEY取得 |
| 57 | * |
| 58 | * @return string |
| 59 | */ |
| 60 | public function get_feature_key(): string { |
| 61 | return self::KEY_FEATURE; |
| 62 | } |
| 63 | |
| 64 | /** |
| 65 | * 有効無効判定 |
| 66 | * |
| 67 | * @return bool |
| 68 | */ |
| 69 | public function is_enabled(): bool { |
| 70 | return $this->config->get( $this->get_feature_key() ) === 't' ? true : false; |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * ログインフォームの有効無効判定 |
| 75 | */ |
| 76 | public function is_login_form_enabled(): bool { |
| 77 | return ( (int) $this->config->get( self::KEY_LOGIN ) === (int) self::LOGIN_VALUES[1] ) ? true : false; |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * コメントフォームの有効無効判定 |
| 82 | */ |
| 83 | public function is_comment_form_enabled(): bool { |
| 84 | return ( (int) $this->config->get( self::KEY_COMMENT ) === (int) self::COMMENT_VALUES[1] ) ? true : false; |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * パスワードリセットフォームの有効無効判定 |
| 89 | */ |
| 90 | public function is_lost_password_form_enabled(): bool { |
| 91 | return ( (int) $this->config->get( self::KEY_LOST_PASSWORD ) === (int) self::LOST_PASSWORD_VALUES[1] ) ? true : false; |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * ユーザー登録フォームの有効無効判定 |
| 96 | */ |
| 97 | public function is_register_form_enabled(): bool { |
| 98 | return ( (int) $this->config->get( self::KEY_REGISTER ) === (int) self::REGISTER_VALUES[1] ) ? true : false; |
| 99 | } |
| 100 | |
| 101 | /** |
| 102 | * 初期設定値取得 |
| 103 | * |
| 104 | * @return array |
| 105 | */ |
| 106 | public function get_default(): array { |
| 107 | return array( |
| 108 | self::KEY_FEATURE => 'f', |
| 109 | self::KEY_LOGIN => self::LOGIN_VALUES[1], |
| 110 | self::KEY_COMMENT => self::COMMENT_VALUES[1], |
| 111 | self::KEY_LOST_PASSWORD => self::LOST_PASSWORD_VALUES[1], |
| 112 | self::KEY_REGISTER => self::REGISTER_VALUES[1], |
| 113 | ); |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * 設定値key取得 |
| 118 | */ |
| 119 | public function get_keys(): array { |
| 120 | return array( |
| 121 | self::KEY_FEATURE, |
| 122 | self::KEY_LOGIN, |
| 123 | self::KEY_COMMENT, |
| 124 | self::KEY_LOST_PASSWORD, |
| 125 | self::KEY_REGISTER, |
| 126 | ); |
| 127 | } |
| 128 | |
| 129 | /** |
| 130 | * 設定値取得 |
| 131 | */ |
| 132 | public function get_settings(): array { |
| 133 | $settings = array(); |
| 134 | $keys = $this->get_keys(); |
| 135 | |
| 136 | foreach ( $keys as $key ) { |
| 137 | $settings[ $key ] = $this->config->get( $key ); |
| 138 | } |
| 139 | |
| 140 | return $settings; |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * 設定値保存 |
| 145 | * |
| 146 | * @param array $settings |
| 147 | * @return void |
| 148 | */ |
| 149 | public function save_settings( $settings ): void { |
| 150 | $keys = $this->get_keys(); |
| 151 | |
| 152 | foreach ( $keys as $key ) { |
| 153 | $this->config->set( $key, $settings[ $key ] ?? '' ); |
| 154 | } |
| 155 | $this->config->save(); |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * 設定定義値取得 |
| 160 | * |
| 161 | * @return array |
| 162 | */ |
| 163 | public function get_constant_settings(): array { |
| 164 | return array( |
| 165 | self::KEY_LOGIN => self::LOGIN_VALUES, |
| 166 | self::KEY_COMMENT => self::COMMENT_VALUES, |
| 167 | self::KEY_LOST_PASSWORD => self::LOST_PASSWORD_VALUES, |
| 168 | self::KEY_REGISTER => self::REGISTER_VALUES, |
| 169 | ); |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * 動作環境チェック |
| 174 | * |
| 175 | * @return string |
| 176 | */ |
| 177 | public function check_modules(): string { |
| 178 | $ret = $this->check_gd(); |
| 179 | if ( '' !== $ret ) { |
| 180 | return $ret; |
| 181 | } |
| 182 | |
| 183 | $ret = $this->check_captcha_save_dir(); |
| 184 | if ( '' !== $ret ) { |
| 185 | return $ret; |
| 186 | } |
| 187 | |
| 188 | return $ret; |
| 189 | } |
| 190 | |
| 191 | /** |
| 192 | * GDライブラリチェック |
| 193 | * |
| 194 | * @return string |
| 195 | */ |
| 196 | public function check_gd(): string { |
| 197 | $gd = gd_info(); |
| 198 | |
| 199 | if ( empty( $gd ) ) { |
| 200 | return 'GDライブラリを利用できません'; |
| 201 | } |
| 202 | |
| 203 | if ( ! array_key_exists( 'FreeType Support', $gd ) || false === $gd['FreeType Support'] ) { |
| 204 | return 'FreeType が無効です'; |
| 205 | } |
| 206 | |
| 207 | return ''; |
| 208 | } |
| 209 | |
| 210 | /** |
| 211 | * 画像認証画像保存確認 |
| 212 | * |
| 213 | * @return string |
| 214 | */ |
| 215 | public function check_captcha_save_dir(): string { |
| 216 | if ( ! $this->captcha->make_tmp_dir() ) { |
| 217 | return '画像認証画像保存ディレクトリを作成できません: ' . $this->captcha->tmp_dir; |
| 218 | } |
| 219 | |
| 220 | return ''; |
| 221 | } |
| 222 | |
| 223 | /** |
| 224 | * 有効化 |
| 225 | * |
| 226 | * @return void |
| 227 | */ |
| 228 | public function activate(): void { |
| 229 | $settings = $this->get_default(); |
| 230 | $this->save_settings( $settings ); |
| 231 | } |
| 232 | |
| 233 | /** |
| 234 | * 無効化 |
| 235 | * |
| 236 | * @return void |
| 237 | */ |
| 238 | public function deactivate(): void { |
| 239 | $settings = $this->get_settings(); |
| 240 | $settings[ self::KEY_FEATURE ] = 'f'; |
| 241 | $this->save_settings( $settings ); |
| 242 | } |
| 243 | |
| 244 | /** |
| 245 | * 画像認証 |
| 246 | * |
| 247 | * @return string |
| 248 | */ |
| 249 | function create_captcha(): string { |
| 250 | $word = $this->captcha->generate_random_word(); |
| 251 | $prefix = mt_rand(); |
| 252 | $this->captcha->generate_image( $prefix, $word ); |
| 253 | |
| 254 | $captcha = '<p class="cloudsecure-wp-captcha-block">' . "\n"; |
| 255 | $captcha .= ' <style>' . "\n"; |
| 256 | $captcha .= ' .cloudsecure-wp-captcha-block label{' . "\n"; |
| 257 | $captcha .= ' display: block;' . "\n"; |
| 258 | $captcha .= ' }' . "\n"; |
| 259 | $captcha .= ' .cloudsecure-wp-captcha-block label img{' . "\n"; |
| 260 | $captcha .= ' border: 1px solid #CCCCCC;' . "\n"; |
| 261 | $captcha .= ' padding: 8px;' . "\n"; |
| 262 | $captcha .= ' margin-top: 2px;' . "\n"; |
| 263 | $captcha .= ' }' . "\n"; |
| 264 | $captcha .= ' </style>' . "\n"; |
| 265 | $captcha .= ' <label for="' . self::CAPTCHA_FORM_NAME . '">画像に表示された文字を� |
| 266 | �力してください</label>' . "\n"; |
| 267 | $captcha .= ' <label for="' . self::CAPTCHA_FORM_NAME . '"><img src="' . $this->info['plugin_url'] . 'really-simple-captcha/tmp/' . $prefix . '.png" alt="CAPTCHA"></label>' . "\n"; |
| 268 | $captcha .= ' <input type="text" id="' . self::CAPTCHA_FORM_NAME . '" name="' . self::CAPTCHA_FORM_NAME . '" class="input" value="" size="10" aria-required="true" />' . "\n"; |
| 269 | $captcha .= ' <input type="hidden" id="' . self::PREFIX_FORM_NAME . '" name="' . self::PREFIX_FORM_NAME . '" value="' . $prefix . '" />' . "\n"; |
| 270 | $captcha .= wp_nonce_field( $this->get_feature_key() . '_csrf', 'cloudsecurewp_captcha_wpnonce', true, false ) . "\n"; |
| 271 | $captcha .= '</p>' . "\n"; |
| 272 | |
| 273 | return $captcha; |
| 274 | } |
| 275 | |
| 276 | /** |
| 277 | * 画像認証チェック |
| 278 | * |
| 279 | * @return bool |
| 280 | */ |
| 281 | public function check_captcha( bool $remove_on_failure = true ): bool { |
| 282 | if ( ! empty( $_POST ) && check_admin_referer( $this->get_feature_key() . '_csrf', 'cloudsecurewp_captcha_wpnonce' ) ) { |
| 283 | return $this->captcha->check( sanitize_text_field( $_POST[ self::PREFIX_FORM_NAME ] ?? '' ), sanitize_text_field( $_POST[ self::CAPTCHA_FORM_NAME ] ?? '' ), $remove_on_failure ); |
| 284 | } |
| 285 | |
| 286 | return false; |
| 287 | } |
| 288 | |
| 289 | /** |
| 290 | * 画像認証エラー |
| 291 | */ |
| 292 | public function get_captcha_error() { |
| 293 | return new WP_Error( self::ERROR_CODE, self::CAPTCHA_ERROR_MESSAGE ); |
| 294 | } |
| 295 | |
| 296 | /** |
| 297 | * エラーコード追加 |
| 298 | */ |
| 299 | public function shake_error_codes( $error_codes ) { |
| 300 | array_push( $error_codes, self::ERROR_CODE ); |
| 301 | return $error_codes; |
| 302 | } |
| 303 | |
| 304 | /** |
| 305 | * ログインフォーム画像認証 |
| 306 | */ |
| 307 | public function login_form() { |
| 308 | echo wp_kses( $this->create_captcha(), $this->allowed_html ); |
| 309 | } |
| 310 | |
| 311 | /** |
| 312 | * ログインフォーム画像認証チェック |
| 313 | */ |
| 314 | public function wp_authenticate_user( $user, $password ) { |
| 315 | if ( $this->check_captcha() ) { |
| 316 | return $user; |
| 317 | } |
| 318 | |
| 319 | return $this->get_captcha_error(); |
| 320 | } |
| 321 | |
| 322 | /** |
| 323 | * コメントフォーム画像認証 |
| 324 | */ |
| 325 | public function comment_form_default_fields() { |
| 326 | echo wp_kses( $this->create_captcha(), $this->allowed_html ); |
| 327 | $this->comment_captcha_displayed = true; |
| 328 | } |
| 329 | |
| 330 | /** |
| 331 | * コメントフォーム画像認証チェック |
| 332 | */ |
| 333 | public function preprocess_comment( $comment_data ) { |
| 334 | if ( is_admin() || $this->check_captcha() ) { |
| 335 | return $comment_data; |
| 336 | } |
| 337 | |
| 338 | wp_die( esc_html( self::CAPTCHA_ERROR_MESSAGE ), esc_html( 'ERROR' ), array( 'back_link' => true ) ); |
| 339 | } |
| 340 | |
| 341 | /** |
| 342 | * パスワードリセットフォーム画像認証 |
| 343 | */ |
| 344 | public function lostpassword_form() { |
| 345 | echo wp_kses( $this->create_captcha(), $this->allowed_html ); |
| 346 | } |
| 347 | |
| 348 | /** |
| 349 | * パスワードリセットフォーム画像認証チェック |
| 350 | */ |
| 351 | public function allow_password_reset( $allow_reset, $user_id ) { |
| 352 | if ( $this->check_captcha() ) { |
| 353 | return $allow_reset; |
| 354 | } |
| 355 | |
| 356 | return $this->get_captcha_error(); |
| 357 | } |
| 358 | |
| 359 | /** |
| 360 | * ユーザー登録フォーム画像認証 |
| 361 | */ |
| 362 | public function register_form() { |
| 363 | echo wp_kses( $this->create_captcha(), $this->allowed_html ); |
| 364 | } |
| 365 | |
| 366 | /** |
| 367 | * ユーザー登録フォーム画像認証チェック |
| 368 | */ |
| 369 | public function register_post( $username, $email, $errors ) { |
| 370 | if ( ! $this->check_captcha() ) { |
| 371 | $errors->add( self::CAPTCHA_FORM_NAME, self::CAPTCHA_ERROR_MESSAGE ); |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | /** |
| 376 | * コメントフォーム：ブラウザの「戻る」操作時に画像認証を更新するスクリプト出力 |
| 377 | * Bfcache からの復� |
| 378 | �（event.persisted）または back_forward ナビゲーションを検知してリロードする。 |
| 379 | */ |
| 380 | public function comment_captcha_reload_script(): void { |
| 381 | if ( $this->comment_captcha_displayed ) { |
| 382 | ?> |
| 383 | <script> |
| 384 | window.addEventListener('pageshow', function(event) { |
| 385 | var isBackForward = false; |
| 386 | if (window.performance && typeof performance.getEntriesByType === 'function') { |
| 387 | var perfEntries = performance.getEntriesByType('navigation'); |
| 388 | isBackForward = perfEntries.length > 0 && perfEntries[0].type === 'back_forward'; |
| 389 | } |
| 390 | if (event.persisted || isBackForward) { |
| 391 | window.location.reload(); |
| 392 | } |
| 393 | }); |
| 394 | </script> |
| 395 | <?php |
| 396 | } |
| 397 | } |
| 398 | } |
| 399 |