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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Api\Validator; |
| 4 | |
| 5 | use Exception; |
| 6 | use MediaWiki\Api\ApiBase; |
| 7 | use MediaWiki\Api\ApiMain; |
| 8 | use MediaWiki\Api\ApiMessage; |
| 9 | use MediaWiki\Api\ApiUsageException; |
| 10 | use MediaWiki\Message\Message; |
| 11 | use MediaWiki\ParamValidator\TypeDef\NamespaceDef; |
| 12 | use MediaWiki\ParamValidator\TypeDef\TagsDef; |
| 13 | use MediaWiki\ParamValidator\TypeDef\TitleDef; |
| 14 | use MediaWiki\ParamValidator\TypeDef\UserDef; |
| 15 | use Wikimedia\Message\DataMessageValue; |
| 16 | use Wikimedia\Message\MessageValue; |
| 17 | use Wikimedia\ObjectFactory\ObjectFactory; |
| 18 | use Wikimedia\ParamValidator\ParamValidator; |
| 19 | use Wikimedia\ParamValidator\TypeDef\EnumDef; |
| 20 | use Wikimedia\ParamValidator\TypeDef\ExpiryDef; |
| 21 | use Wikimedia\ParamValidator\TypeDef\IntegerDef; |
| 22 | use Wikimedia\ParamValidator\TypeDef\LimitDef; |
| 23 | use Wikimedia\ParamValidator\TypeDef\PasswordDef; |
| 24 | use Wikimedia\ParamValidator\TypeDef\PresenceBooleanDef; |
| 25 | use Wikimedia\ParamValidator\TypeDef\StringDef; |
| 26 | use Wikimedia\ParamValidator\TypeDef\TimestampDef; |
| 27 | use Wikimedia\ParamValidator\TypeDef\UploadDef; |
| 28 | use Wikimedia\ParamValidator\ValidationException; |
| 29 | use Wikimedia\RequestTimeout\TimeoutException; |
| 30 | |
| 31 | /** |
| 32 | * This wraps a bunch of the API-specific parameter validation logic. |
| 33 | * |
| 34 | * It's intended to be used in ApiMain by composition. |
| 35 | * |
| 36 | * @since 1.35 |
| 37 | * @ingroup API |
| 38 | */ |
| 39 | class ApiParamValidator { |
| 40 | |
| 41 | /** @var ParamValidator */ |
| 42 | private $paramValidator; |
| 43 | |
| 44 | /** Type defs for ParamValidator */ |
| 45 | private const TYPE_DEFS = [ |
| 46 | 'boolean' => [ 'class' => PresenceBooleanDef::class ], |
| 47 | 'enum' => [ 'class' => EnumDef::class ], |
| 48 | 'expiry' => [ 'class' => ExpiryDef::class ], |
| 49 | 'integer' => [ 'class' => IntegerDef::class ], |
| 50 | 'limit' => [ 'class' => LimitDef::class ], |
| 51 | 'namespace' => [ |
| 52 | 'class' => NamespaceDef::class, |
| 53 | 'services' => [ 'NamespaceInfo' ], |
| 54 | ], |
| 55 | 'NULL' => [ |
| 56 | 'class' => StringDef::class, |
| 57 | 'args' => [ [ |
| 58 | StringDef::OPT_ALLOW_EMPTY => true, |
| 59 | ] ], |
| 60 | ], |
| 61 | 'password' => [ 'class' => PasswordDef::class ], |
| 62 | // Unlike 'string', the 'raw' type will not be subject to Unicode |
| 63 | // NFC normalization. |
| 64 | 'raw' => [ 'class' => StringDef::class ], |
| 65 | 'string' => [ 'class' => StringDef::class ], |
| 66 | 'submodule' => [ 'class' => SubmoduleDef::class ], |
| 67 | 'tags' => [ |
| 68 | 'class' => TagsDef::class, |
| 69 | 'services' => [ 'ChangeTagsStore' ], |
| 70 | ], |
| 71 | 'text' => [ 'class' => StringDef::class ], |
| 72 | 'timestamp' => [ |
| 73 | 'class' => TimestampDef::class, |
| 74 | 'args' => [ [ |
| 75 | 'defaultFormat' => TS_MW, |
| 76 | ] ], |
| 77 | ], |
| 78 | 'title' => [ |
| 79 | 'class' => TitleDef::class, |
| 80 | 'services' => [ 'TitleFactory' ], |
| 81 | ], |
| 82 | 'user' => [ |
| 83 | 'class' => UserDef::class, |
| 84 | 'services' => [ 'UserIdentityLookup', 'TitleParser', 'UserNameUtils' ] |
| 85 | ], |
| 86 | 'upload' => [ 'class' => UploadDef::class ], |
| 87 | ]; |
| 88 | |
| 89 | /** |
| 90 | * @internal |
| 91 | * @param ApiMain $main |
| 92 | * @param ObjectFactory $objectFactory |
| 93 | */ |
| 94 | public function __construct( ApiMain $main, ObjectFactory $objectFactory ) { |
| 95 | $this->paramValidator = new ParamValidator( |
| 96 | new ApiParamValidatorCallbacks( $main ), |
| 97 | $objectFactory, |
| 98 | [ |
| 99 | 'typeDefs' => self::TYPE_DEFS, |
| 100 | 'ismultiLimits' => [ ApiBase::LIMIT_SML1, ApiBase::LIMIT_SML2 ], |
| 101 | ] |
| 102 | ); |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * List known type names |
| 107 | * @return string[] |
| 108 | */ |
| 109 | public function knownTypes(): array { |
| 110 | return $this->paramValidator->knownTypes(); |
| 111 | } |
| 112 | |
| 113 | /** |
| 114 | * Map deprecated styles for messages for ParamValidator |
| 115 | * @param array $settings |
| 116 | * @return array |
| 117 | */ |
| 118 | private function mapDeprecatedSettingsMessages( array $settings ): array { |
| 119 | if ( isset( $settings[EnumDef::PARAM_DEPRECATED_VALUES] ) ) { |
| 120 | foreach ( $settings[EnumDef::PARAM_DEPRECATED_VALUES] as &$v ) { |
| 121 | if ( $v === null || $v === true || $v instanceof MessageValue ) { |
| 122 | continue; |
| 123 | } |
| 124 | |
| 125 | // Convert the message specification to a DataMessageValue. Flag in the data |
| 126 | // that it was so converted, so ApiParamValidatorCallbacks::recordCondition() can |
| 127 | // take that into account. |
| 128 | $msg = ApiMessage::create( $v ); |
| 129 | $v = DataMessageValue::new( |
| 130 | $msg->getKey(), |
| 131 | $msg->getParams(), |
| 132 | 'bogus', |
| 133 | [ '💩' => 'back-compat' ] |
| 134 | ); |
| 135 | } |
| 136 | unset( $v ); |
| 137 | } |
| 138 | |
| 139 | return $settings; |
| 140 | } |
| 141 | |
| 142 | /** |
| 143 | * Adjust certain settings where ParamValidator differs from historical Action API behavior |
| 144 | * @param array|mixed $settings |
| 145 | * @return array |
| 146 | */ |
| 147 | public function normalizeSettings( $settings ): array { |
| 148 | if ( is_array( $settings ) ) { |
| 149 | if ( !isset( $settings[ParamValidator::PARAM_IGNORE_UNRECOGNIZED_VALUES] ) ) { |
| 150 | $settings[ParamValidator::PARAM_IGNORE_UNRECOGNIZED_VALUES] = true; |
| 151 | } |
| 152 | |
| 153 | if ( !isset( $settings[IntegerDef::PARAM_IGNORE_RANGE] ) ) { |
| 154 | $settings[IntegerDef::PARAM_IGNORE_RANGE] = empty( $settings[ApiBase::PARAM_RANGE_ENFORCE] ); |
| 155 | } |
| 156 | |
| 157 | $settings = $this->mapDeprecatedSettingsMessages( $settings ); |
| 158 | } |
| 159 | |
| 160 | return $this->paramValidator->normalizeSettings( $settings ); |
| 161 | } |
| 162 | |
| 163 | /** |
| 164 | * Check an API settings message |
| 165 | * @param ApiBase $module |
| 166 | * @param string $key |
| 167 | * @param string|array|Message $value Message definition, see Message::newFromSpecifier() |
| 168 | * @param array &$ret |
| 169 | */ |
| 170 | private function checkSettingsMessage( ApiBase $module, string $key, $value, array &$ret ): void { |
| 171 | try { |
| 172 | $msg = Message::newFromSpecifier( $value ); |
| 173 | $ret['messages'][] = MessageValue::newFromSpecifier( $msg ); |
| 174 | } catch ( TimeoutException $e ) { |
| 175 | throw $e; |
| 176 | } catch ( Exception $e ) { |
| 177 | $ret['issues'][] = "Message specification for $key is not valid"; |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | /** |
| 182 | * Check settings for the Action API. |
| 183 | * @param ApiBase $module |
| 184 | * @param array $params All module params to test |
| 185 | * @param string $name Parameter to test |
| 186 | * @param array $options Options array |
| 187 | * @return array As for ParamValidator::checkSettings() |
| 188 | */ |
| 189 | public function checkSettings( |
| 190 | ApiBase $module, array $params, string $name, array $options |
| 191 | ): array { |
| 192 | $options['module'] = $module; |
| 193 | $settings = $params[$name]; |
| 194 | if ( is_array( $settings ) ) { |
| 195 | $settings = $this->mapDeprecatedSettingsMessages( $settings ); |
| 196 | } |
| 197 | $ret = $this->paramValidator->checkSettings( |
| 198 | $module->encodeParamName( $name ), $settings, $options |
| 199 | ); |
| 200 | |
| 201 | $ret['allowedKeys'] = array_merge( $ret['allowedKeys'], [ |
| 202 | ApiBase::PARAM_RANGE_ENFORCE, ApiBase::PARAM_HELP_MSG, ApiBase::PARAM_HELP_MSG_APPEND, |
| 203 | ApiBase::PARAM_HELP_MSG_INFO, ApiBase::PARAM_HELP_MSG_PER_VALUE, ApiBase::PARAM_TEMPLATE_VARS, |
| 204 | ] ); |
| 205 | |
| 206 | if ( !is_array( $settings ) ) { |
| 207 | $settings = []; |
| 208 | } |
| 209 | |
| 210 | if ( !is_bool( $settings[ApiBase::PARAM_RANGE_ENFORCE] ?? false ) ) { |
| 211 | $ret['issues'][ApiBase::PARAM_RANGE_ENFORCE] = 'PARAM_RANGE_ENFORCE must be boolean, got ' |
| 212 | . gettype( $settings[ApiBase::PARAM_RANGE_ENFORCE] ); |
| 213 | } |
| 214 | |
| 215 | $path = $module->getModulePath(); |
| 216 | $this->checkSettingsMessage( |
| 217 | $module, 'PARAM_HELP_MSG', $settings[ApiBase::PARAM_HELP_MSG] ?? "apihelp-$path-param-$name", $ret |
| 218 | ); |
| 219 | |
| 220 | if ( isset( $settings[ApiBase::PARAM_HELP_MSG_APPEND] ) ) { |
| 221 | if ( !is_array( $settings[ApiBase::PARAM_HELP_MSG_APPEND] ) ) { |
| 222 | $ret['issues'][ApiBase::PARAM_HELP_MSG_APPEND] = 'PARAM_HELP_MSG_APPEND must be an array, got ' |
| 223 | . gettype( $settings[ApiBase::PARAM_HELP_MSG_APPEND] ); |
| 224 | } else { |
| 225 | foreach ( $settings[ApiBase::PARAM_HELP_MSG_APPEND] as $k => $v ) { |
| 226 | $this->checkSettingsMessage( $module, "PARAM_HELP_MSG_APPEND[$k]", $v, $ret ); |
| 227 | } |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | if ( isset( $settings[ApiBase::PARAM_HELP_MSG_INFO] ) ) { |
| 232 | if ( !is_array( $settings[ApiBase::PARAM_HELP_MSG_INFO] ) ) { |
| 233 | $ret['issues'][ApiBase::PARAM_HELP_MSG_INFO] = 'PARAM_HELP_MSG_INFO must be an array, got ' |
| 234 | . gettype( $settings[ApiBase::PARAM_HELP_MSG_INFO] ); |
| 235 | } else { |
| 236 | foreach ( $settings[ApiBase::PARAM_HELP_MSG_INFO] as $k => $v ) { |
| 237 | if ( !is_array( $v ) ) { |
| 238 | $ret['issues'][] = "PARAM_HELP_MSG_INFO[$k] must be an array, got " . gettype( $v ); |
| 239 | } elseif ( !is_string( $v[0] ) ) { |
| 240 | $ret['issues'][] = "PARAM_HELP_MSG_INFO[$k][0] must be a string, got " . gettype( $v[0] ); |
| 241 | } else { |
| 242 | $v[0] = "apihelp-{$path}-paraminfo-{$v[0]}"; |
| 243 | $this->checkSettingsMessage( $module, "PARAM_HELP_MSG_INFO[$k]", $v, $ret ); |
| 244 | } |
| 245 | } |
| 246 | } |
| 247 | } |
| 248 | |
| 249 | if ( isset( $settings[ApiBase::PARAM_HELP_MSG_PER_VALUE] ) ) { |
| 250 | if ( !is_array( $settings[ApiBase::PARAM_HELP_MSG_PER_VALUE] ) ) { |
| 251 | $ret['issues'][ApiBase::PARAM_HELP_MSG_PER_VALUE] = 'PARAM_HELP_MSG_PER_VALUE must be an array,' |
| 252 | . ' got ' . gettype( $settings[ApiBase::PARAM_HELP_MSG_PER_VALUE] ); |
| 253 | } elseif ( !is_array( $settings[ParamValidator::PARAM_TYPE] ?? '' ) ) { |
| 254 | $ret['issues'][ApiBase::PARAM_HELP_MSG_PER_VALUE] = 'PARAM_HELP_MSG_PER_VALUE can only be used ' |
| 255 | . 'with PARAM_TYPE as an array'; |
| 256 | } else { |
| 257 | $values = array_map( 'strval', $settings[ParamValidator::PARAM_TYPE] ); |
| 258 | foreach ( $settings[ApiBase::PARAM_HELP_MSG_PER_VALUE] as $k => $v ) { |
| 259 | if ( !in_array( (string)$k, $values, true ) ) { |
| 260 | // Or should this be allowed? |
| 261 | $ret['issues'][] = "PARAM_HELP_MSG_PER_VALUE contains \"$k\", which is not in PARAM_TYPE."; |
| 262 | } |
| 263 | $this->checkSettingsMessage( $module, "PARAM_HELP_MSG_PER_VALUE[$k]", $v, $ret ); |
| 264 | } |
| 265 | foreach ( $settings[ParamValidator::PARAM_TYPE] as $p ) { |
| 266 | if ( array_key_exists( $p, $settings[ApiBase::PARAM_HELP_MSG_PER_VALUE] ) ) { |
| 267 | continue; |
| 268 | } |
| 269 | $path = $module->getModulePath(); |
| 270 | $this->checkSettingsMessage( |
| 271 | $module, |
| 272 | "PARAM_HELP_MSG_PER_VALUE[$p]", |
| 273 | "apihelp-$path-paramvalue-$name-$p", |
| 274 | $ret |
| 275 | ); |
| 276 | } |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | if ( isset( $settings[ApiBase::PARAM_TEMPLATE_VARS] ) ) { |
| 281 | if ( !is_array( $settings[ApiBase::PARAM_TEMPLATE_VARS] ) ) { |
| 282 | $ret['issues'][ApiBase::PARAM_TEMPLATE_VARS] = 'PARAM_TEMPLATE_VARS must be an array,' |
| 283 | . ' got ' . gettype( $settings[ApiBase::PARAM_TEMPLATE_VARS] ); |
| 284 | } elseif ( $settings[ApiBase::PARAM_TEMPLATE_VARS] === [] ) { |
| 285 | $ret['issues'][ApiBase::PARAM_TEMPLATE_VARS] = 'PARAM_TEMPLATE_VARS cannot be the empty array'; |
| 286 | } else { |
| 287 | foreach ( $settings[ApiBase::PARAM_TEMPLATE_VARS] as $key => $target ) { |
| 288 | if ( !preg_match( '/^[^{}]+$/', $key ) ) { |
| 289 | $ret['issues'][] = "PARAM_TEMPLATE_VARS keys may not contain '{' or '}', got \"$key\""; |
| 290 | } elseif ( !str_contains( $name, '{' . $key . '}' ) ) { |
| 291 | $ret['issues'][] = "Parameter name must contain PARAM_TEMPLATE_VARS key {{$key}}"; |
| 292 | } |
| 293 | if ( !is_string( $target ) && !is_int( $target ) ) { |
| 294 | $ret['issues'][] = "PARAM_TEMPLATE_VARS[$key] has invalid target type " . gettype( $target ); |
| 295 | } elseif ( !isset( $params[$target] ) ) { |
| 296 | $ret['issues'][] = "PARAM_TEMPLATE_VARS[$key] target parameter \"$target\" does not exist"; |
| 297 | } else { |
| 298 | $settings2 = $params[$target]; |
| 299 | if ( empty( $settings2[ParamValidator::PARAM_ISMULTI] ) ) { |
| 300 | $ret['issues'][] = "PARAM_TEMPLATE_VARS[$key] target parameter \"$target\" must have " |
| 301 | . 'PARAM_ISMULTI = true'; |
| 302 | } |
| 303 | if ( isset( $settings2[ApiBase::PARAM_TEMPLATE_VARS] ) ) { |
| 304 | if ( $target === $name ) { |
| 305 | $ret['issues'][] = "PARAM_TEMPLATE_VARS[$key] cannot target the parameter itself"; |
| 306 | } |
| 307 | if ( array_diff( |
| 308 | $settings2[ApiBase::PARAM_TEMPLATE_VARS], |
| 309 | $settings[ApiBase::PARAM_TEMPLATE_VARS] |
| 310 | ) ) { |
| 311 | $ret['issues'][] = "PARAM_TEMPLATE_VARS[$key]: Target's " |
| 312 | . 'PARAM_TEMPLATE_VARS must be a subset of the original'; |
| 313 | } |
| 314 | } |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | $keys = implode( '|', array_map( |
| 319 | static function ( $key ) { |
| 320 | return preg_quote( $key, '/' ); |
| 321 | }, |
| 322 | array_keys( $settings[ApiBase::PARAM_TEMPLATE_VARS] ) |
| 323 | ) ); |
| 324 | if ( !preg_match( '/^(?>[^{}]+|\{(?:' . $keys . ')\})+$/', $name ) ) { |
| 325 | $ret['issues'][] = "Parameter name may not contain '{' or '}' other than ' |
| 326 | . 'as defined by PARAM_TEMPLATE_VARS"; |
| 327 | } |
| 328 | } |
| 329 | } elseif ( !preg_match( '/^[^{}]+$/', $name ) ) { |
| 330 | $ret['issues'][] = "Parameter name may not contain '{' or '}' without PARAM_TEMPLATE_VARS"; |
| 331 | } |
| 332 | |
| 333 | return $ret; |
| 334 | } |
| 335 | |
| 336 | /** |
| 337 | * Convert a ValidationException to an ApiUsageException |
| 338 | * @param ApiBase $module |
| 339 | * @param ValidationException $ex |
| 340 | * @throws ApiUsageException always |
| 341 | * @return never |
| 342 | */ |
| 343 | private function convertValidationException( ApiBase $module, ValidationException $ex ) { |
| 344 | $mv = $ex->getFailureMessage(); |
| 345 | throw ApiUsageException::newWithMessage( |
| 346 | $module, |
| 347 | $mv, |
| 348 | $mv->getCode(), |
| 349 | $mv->getData(), |
| 350 | 0, |
| 351 | $ex |
| 352 | ); |
| 353 | } |
| 354 | |
| 355 | /** |
| 356 | * Get and validate a value |
| 357 | * @param ApiBase $module |
| 358 | * @param string $name Parameter name, unprefixed |
| 359 | * @param array|mixed $settings Default value or an array of settings |
| 360 | * using PARAM_* constants. |
| 361 | * @param array $options Options array |
| 362 | * @return mixed Validated parameter value |
| 363 | * @throws ApiUsageException if the value is invalid |
| 364 | */ |
| 365 | public function getValue( ApiBase $module, string $name, $settings, array $options = [] ) { |
| 366 | $options['module'] = $module; |
| 367 | $name = $module->encodeParamName( $name ); |
| 368 | $settings = $this->normalizeSettings( $settings ); |
| 369 | try { |
| 370 | return $this->paramValidator->getValue( $name, $settings, $options ); |
| 371 | } catch ( ValidationException $ex ) { |
| 372 | $this->convertValidationException( $module, $ex ); |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | /** |
| 377 | * Validate a parameter value using a settings array |
| 378 | * |
| 379 | * @param ApiBase $module |
| 380 | * @param string $name Parameter name, unprefixed |
| 381 | * @param mixed $value Parameter value |
| 382 | * @param array|mixed $settings Default value or an array of settings |
| 383 | * using PARAM_* constants. |
| 384 | * @param array $options Options array |
| 385 | * @return mixed Validated parameter value(s) |
| 386 | * @throws ApiUsageException if the value is invalid |
| 387 | */ |
| 388 | public function validateValue( |
| 389 | ApiBase $module, string $name, $value, $settings, array $options = [] |
| 390 | ) { |
| 391 | $options['module'] = $module; |
| 392 | $name = $module->encodeParamName( $name ); |
| 393 | $settings = $this->normalizeSettings( $settings ); |
| 394 | try { |
| 395 | return $this->paramValidator->validateValue( $name, $value, $settings, $options ); |
| 396 | } catch ( ValidationException $ex ) { |
| 397 | $this->convertValidationException( $module, $ex ); |
| 398 | } |
| 399 | } |
| 400 | |
| 401 | /** |
| 402 | * Describe parameter settings in a machine-readable format. |
| 403 | * |
| 404 | * @param ApiBase $module |
| 405 | * @param string $name Parameter name. |
| 406 | * @param array|mixed $settings Default value or an array of settings |
| 407 | * using PARAM_* constants. |
| 408 | * @param array $options Options array. |
| 409 | * @return array |
| 410 | */ |
| 411 | public function getParamInfo( ApiBase $module, string $name, $settings, array $options ): array { |
| 412 | $options['module'] = $module; |
| 413 | $name = $module->encodeParamName( $name ); |
| 414 | return $this->paramValidator->getParamInfo( $name, $settings, $options ); |
| 415 | } |
| 416 | |
| 417 | /** |
| 418 | * Describe parameter settings in human-readable format |
| 419 | * |
| 420 | * @param ApiBase $module |
| 421 | * @param string $name Parameter name being described. |
| 422 | * @param array|mixed $settings Default value or an array of settings |
| 423 | * using PARAM_* constants. |
| 424 | * @param array $options Options array. |
| 425 | * @return Message[] |
| 426 | */ |
| 427 | public function getHelpInfo( ApiBase $module, string $name, $settings, array $options ): array { |
| 428 | $options['module'] = $module; |
| 429 | $name = $module->encodeParamName( $name ); |
| 430 | |
| 431 | $ret = $this->paramValidator->getHelpInfo( $name, $settings, $options ); |
| 432 | foreach ( $ret as &$m ) { |
| 433 | $k = $m->getKey(); |
| 434 | $m = Message::newFromSpecifier( $m ); |
| 435 | if ( str_starts_with( $k, 'paramvalidator-help-' ) ) { |
| 436 | $m = new Message( |
| 437 | [ 'api-help-param-' . substr( $k, 20 ), $k ], |
| 438 | $m->getParams() |
| 439 | ); |
| 440 | } |
| 441 | } |
| 442 | '@phan-var Message[] $ret'; // The above loop converts it |
| 443 | |
| 444 | return $ret; |
| 445 | } |
| 446 | } |