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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\SpecialPage; |
| 4 | |
| 5 | use InvalidArgumentException; |
| 6 | use LogicException; |
| 7 | use MediaWiki\Auth\AuthenticationRequest; |
| 8 | use MediaWiki\Auth\AuthenticationResponse; |
| 9 | use MediaWiki\Auth\AuthManager; |
| 10 | use MediaWiki\Context\DerivativeContext; |
| 11 | use MediaWiki\Deferred\DeferredUpdates; |
| 12 | use MediaWiki\Exception\ErrorPageError; |
| 13 | use MediaWiki\HTMLForm\Field\HTMLInfoField; |
| 14 | use MediaWiki\HTMLForm\HTMLForm; |
| 15 | use MediaWiki\Language\RawMessage; |
| 16 | use MediaWiki\Logger\LoggerFactory; |
| 17 | use MediaWiki\MainConfigNames; |
| 18 | use MediaWiki\Message\Message; |
| 19 | use MediaWiki\Request\DerivativeRequest; |
| 20 | use MediaWiki\Request\WebRequest; |
| 21 | use MediaWiki\Session\Token; |
| 22 | use MediaWiki\Status\Status; |
| 23 | use MWCryptRand; |
| 24 | use Profiler; |
| 25 | use StatusValue; |
| 26 | use UnexpectedValueException; |
| 27 | |
| 28 | /** |
| 29 | * A special page subclass for authentication-related special pages. It generates a form from |
| 30 | * a set of AuthenticationRequest objects, submits the result to AuthManager and |
| 31 | * partially handles the response. |
| 32 | * |
| 33 | * @note Call self::setAuthManager from special page constructor when extending |
| 34 | * |
| 35 | * @stable to extend |
| 36 | * @ingroup Auth |
| 37 | */ |
| 38 | abstract class AuthManagerSpecialPage extends SpecialPage { |
| 39 | /** @var string[] The list of actions this special page deals with. Subclasses should override |
| 40 | * this. |
| 41 | */ |
| 42 | protected static $allowedActions = [ |
| 43 | AuthManager::ACTION_LOGIN, AuthManager::ACTION_LOGIN_CONTINUE, |
| 44 | AuthManager::ACTION_CREATE, AuthManager::ACTION_CREATE_CONTINUE, |
| 45 | AuthManager::ACTION_LINK, AuthManager::ACTION_LINK_CONTINUE, |
| 46 | AuthManager::ACTION_CHANGE, AuthManager::ACTION_REMOVE, AuthManager::ACTION_UNLINK, |
| 47 | ]; |
| 48 | |
| 49 | /** @var array Customized messages */ |
| 50 | protected static $messages = []; |
| 51 | |
| 52 | /** @var string one of the AuthManager::ACTION_* constants. */ |
| 53 | protected $authAction; |
| 54 | |
| 55 | /** @var AuthenticationRequest[] */ |
| 56 | protected $authRequests; |
| 57 | |
| 58 | /** @var string Subpage of the special page. */ |
| 59 | protected $subPage; |
| 60 | |
| 61 | /** @var bool True if the current request is a result of returning from a redirect flow. */ |
| 62 | protected $isReturn; |
| 63 | |
| 64 | /** @var WebRequest|null If set, will be used instead of the real request. Used for redirection. */ |
| 65 | protected $savedRequest; |
| 66 | |
| 67 | /** |
| 68 | * Change the form descriptor that determines how a field will look in the authentication form. |
| 69 | * Called from fieldInfoToFormDescriptor(). |
| 70 | * @stable to override |
| 71 | * |
| 72 | * @param AuthenticationRequest[] $requests |
| 73 | * @param array $fieldInfo Field information array (union of all |
| 74 | * AuthenticationRequest::getFieldInfo() responses). |
| 75 | * @param array &$formDescriptor HTMLForm descriptor. The special key 'weight' can be set to |
| 76 | * change the order of the fields. |
| 77 | * @param string $action Authentication type (one of the AuthManager::ACTION_* constants) |
| 78 | */ |
| 79 | public function onAuthChangeFormFields( |
| 80 | array $requests, array $fieldInfo, array &$formDescriptor, $action |
| 81 | ) { |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * @stable to override |
| 86 | * @return bool|string |
| 87 | */ |
| 88 | protected function getLoginSecurityLevel() { |
| 89 | return $this->getName(); |
| 90 | } |
| 91 | |
| 92 | public function getRequest() { |
| 93 | return $this->savedRequest ?: $this->getContext()->getRequest(); |
| 94 | } |
| 95 | |
| 96 | /** |
| 97 | * Override the POST data, GET data from the real request is preserved. |
| 98 | * |
| 99 | * Used to preserve POST data over a HTTP redirect. |
| 100 | * |
| 101 | * @stable to override |
| 102 | * |
| 103 | * @param array $data |
| 104 | * @param bool|null $wasPosted |
| 105 | */ |
| 106 | protected function setRequest( array $data, $wasPosted = null ) { |
| 107 | $request = $this->getContext()->getRequest(); |
| 108 | $this->savedRequest = new DerivativeRequest( |
| 109 | $request, |
| 110 | $data + $request->getQueryValues(), |
| 111 | $wasPosted ?? $request->wasPosted() |
| 112 | ); |
| 113 | } |
| 114 | |
| 115 | /** @inheritDoc */ |
| 116 | protected function beforeExecute( $subPage ) { |
| 117 | $this->getOutput()->disallowUserJs(); |
| 118 | |
| 119 | return $this->handleReturnBeforeExecute( $subPage ) |
| 120 | && $this->handleReauthBeforeExecute( $subPage ); |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * Handle redirection from the /return subpage. |
| 125 | * |
| 126 | * This is used in the redirect flow where we need |
| 127 | * to be able to process data that was sent via a GET request. We set the /return subpage as |
| 128 | * the reentry point, so we know we need to treat GET as POST, but we don't want to handle all |
| 129 | * future GETs requests as POSTs, so we need to normalize the URL. (Also, we don't want to show any |
| 130 | * received parameters around in the URL; they are ugly and might be sensitive.) |
| 131 | * |
| 132 | * Thus, when on the /return subpage, we stash the request data in the session, redirect, then |
| 133 | * use the session to detect that we have been redirected, recover the data and replace the |
| 134 | * real WebRequest with a fake one that contains the saved data. |
| 135 | * |
| 136 | * @param string $subPage |
| 137 | * @return bool False if execution should be stopped. |
| 138 | */ |
| 139 | protected function handleReturnBeforeExecute( $subPage ) { |
| 140 | $authManager = $this->getAuthManager(); |
| 141 | $key = 'AuthManagerSpecialPage:return:' . $this->getName(); |
| 142 | |
| 143 | if ( $subPage === 'return' ) { |
| 144 | $this->loadAuth( $subPage ); |
| 145 | $preservedParams = $this->getPreservedParams(); |
| 146 | |
| 147 | // FIXME save POST values only from request |
| 148 | $authData = array_diff_key( $this->getRequest()->getValues(), |
| 149 | $preservedParams, [ 'title' => 1 ] ); |
| 150 | $uniqueId = MWCryptRand::generateHex( 6 ); |
| 151 | $preservedParams['authUniqueId'] = $uniqueId; |
| 152 | $key .= ':' . $uniqueId; |
| 153 | $authManager->setAuthenticationSessionData( $key, $authData ); |
| 154 | |
| 155 | $url = $this->getPageTitle()->getFullURL( $preservedParams, false, PROTO_HTTPS ); |
| 156 | $this->getOutput()->redirect( $url ); |
| 157 | return false; |
| 158 | } elseif ( $this->getRequest()->getCheck( 'authUniqueId' ) ) { |
| 159 | $uniqueId = $this->getRequest()->getVal( 'authUniqueId' ); |
| 160 | $key .= ':' . $uniqueId; |
| 161 | $authData = $authManager->getAuthenticationSessionData( $key ); |
| 162 | if ( $authData ) { |
| 163 | $authManager->removeAuthenticationSessionData( $key ); |
| 164 | $this->isReturn = true; |
| 165 | $this->setRequest( $authData, true ); |
| 166 | $this->setPostTransactionProfilerExpectations( __METHOD__ ); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | return true; |
| 171 | } |
| 172 | |
| 173 | /** |
| 174 | * Handle redirection when the user needs to (re)authenticate. |
| 175 | * |
| 176 | * Send the user to the login form if needed; in case the request was a POST, stash in the |
| 177 | * session and simulate it once the user gets back. |
| 178 | * |
| 179 | * @param string $subPage |
| 180 | * @return bool False if execution should be stopped. |
| 181 | * @throws ErrorPageError When the user is not allowed to use this page. |
| 182 | */ |
| 183 | protected function handleReauthBeforeExecute( $subPage ) { |
| 184 | $authManager = $this->getAuthManager(); |
| 185 | $request = $this->getRequest(); |
| 186 | $key = 'AuthManagerSpecialPage:reauth:' . $this->getName(); |
| 187 | |
| 188 | $securityLevel = $this->getLoginSecurityLevel(); |
| 189 | if ( $securityLevel ) { |
| 190 | $securityStatus = $authManager->securitySensitiveOperationStatus( $securityLevel ); |
| 191 | if ( $securityStatus === AuthManager::SEC_REAUTH ) { |
| 192 | $queryParams = array_diff_key( $request->getQueryValues(), [ 'title' => true ] ); |
| 193 | |
| 194 | if ( $request->wasPosted() ) { |
| 195 | // unique ID in case the same special page is open in multiple browser tabs |
| 196 | $uniqueId = MWCryptRand::generateHex( 6 ); |
| 197 | $key .= ':' . $uniqueId; |
| 198 | |
| 199 | $queryParams = [ 'authUniqueId' => $uniqueId ] + $queryParams; |
| 200 | $authData = array_diff_key( $request->getValues(), |
| 201 | $this->getPreservedParams(), [ 'title' => 1 ] ); |
| 202 | $authManager->setAuthenticationSessionData( $key, $authData ); |
| 203 | } |
| 204 | |
| 205 | // Copied from RedirectSpecialPage::getRedirectQuery() |
| 206 | // Would using $this->getPreservedParams() be appropriate here? |
| 207 | $keepParams = [ 'uselang', 'useskin', 'useformat', 'variant', 'debug', 'safemode' ]; |
| 208 | |
| 209 | $title = SpecialPage::getTitleFor( 'Userlogin' ); |
| 210 | $url = $title->getFullURL( [ |
| 211 | 'returnto' => $this->getFullTitle()->getPrefixedDBkey(), |
| 212 | 'returntoquery' => wfArrayToCgi( $queryParams ), |
| 213 | 'force' => $securityLevel, |
| 214 | ] + array_intersect_key( $queryParams, array_fill_keys( $keepParams, true ) ), false, PROTO_HTTPS ); |
| 215 | |
| 216 | $this->getOutput()->redirect( $url ); |
| 217 | return false; |
| 218 | } |
| 219 | |
| 220 | if ( $securityStatus !== AuthManager::SEC_OK ) { |
| 221 | throw new ErrorPageError( 'cannotauth-not-allowed-title', 'cannotauth-not-allowed' ); |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | $uniqueId = $request->getVal( 'authUniqueId' ); |
| 226 | if ( $uniqueId ) { |
| 227 | $key .= ':' . $uniqueId; |
| 228 | $authData = $authManager->getAuthenticationSessionData( $key ); |
| 229 | if ( $authData ) { |
| 230 | $authManager->removeAuthenticationSessionData( $key ); |
| 231 | $this->setRequest( $authData, true ); |
| 232 | $this->setPostTransactionProfilerExpectations( __METHOD__ ); |
| 233 | } |
| 234 | } |
| 235 | |
| 236 | return true; |
| 237 | } |
| 238 | |
| 239 | private function setPostTransactionProfilerExpectations( string $fname ) { |
| 240 | $trxLimits = $this->getConfig()->get( MainConfigNames::TrxProfilerLimits ); |
| 241 | $trxProfiler = Profiler::instance()->getTransactionProfiler(); |
| 242 | $trxProfiler->redefineExpectations( $trxLimits['POST'], $fname ); |
| 243 | DeferredUpdates::addCallableUpdate( static function () use ( $trxProfiler, $trxLimits, $fname ) { |
| 244 | $trxProfiler->redefineExpectations( $trxLimits['PostSend-POST'], $fname ); |
| 245 | } ); |
| 246 | } |
| 247 | |
| 248 | /** |
| 249 | * Get the default action for this special page if none is given via URL/POST data. |
| 250 | * Subclasses should override this (or override loadAuth() so this is never called). |
| 251 | * @stable to override |
| 252 | * @param string $subPage Subpage of the special page. |
| 253 | * @return string an AuthManager::ACTION_* constant. |
| 254 | */ |
| 255 | abstract protected function getDefaultAction( $subPage ); |
| 256 | |
| 257 | /** |
| 258 | * Return custom message key. |
| 259 | * Allows subclasses to customize messages. |
| 260 | * @param string $defaultKey |
| 261 | * @return string |
| 262 | */ |
| 263 | protected function messageKey( $defaultKey ) { |
| 264 | return array_key_exists( $defaultKey, static::$messages ) |
| 265 | ? static::$messages[$defaultKey] : $defaultKey; |
| 266 | } |
| 267 | |
| 268 | /** |
| 269 | * Allows blacklisting certain request types. |
| 270 | * @stable to override |
| 271 | * @return array A list of AuthenticationRequest subclass names |
| 272 | */ |
| 273 | protected function getRequestBlacklist() { |
| 274 | return []; |
| 275 | } |
| 276 | |
| 277 | /** |
| 278 | * Load or initialize $authAction, $authRequests and $subPage. |
| 279 | * Subclasses should call this from execute() or otherwise ensure the variables are initialized. |
| 280 | * @stable to override |
| 281 | * @param string $subPage Subpage of the special page. |
| 282 | * @param string|null $authAction Override auth action specified in request (this is useful |
| 283 | * when the form needs to be changed from <action> to <action>_CONTINUE after a successful |
| 284 | * authentication step) |
| 285 | * @param bool $reset Regenerate the requests even if a cached version is available |
| 286 | */ |
| 287 | protected function loadAuth( $subPage, $authAction = null, $reset = false ) { |
| 288 | // Do not load if already loaded, to cut down on the number of getAuthenticationRequests |
| 289 | // calls. This is important for requests which have hidden information, so any |
| 290 | // getAuthenticationRequests call would mean putting data into some cache. |
| 291 | if ( |
| 292 | !$reset && $this->subPage === $subPage && $this->authAction |
| 293 | && ( !$authAction || $authAction === $this->authAction ) |
| 294 | ) { |
| 295 | return; |
| 296 | } |
| 297 | |
| 298 | $request = $this->getRequest(); |
| 299 | $this->subPage = $subPage; |
| 300 | $this->authAction = $authAction ?: $request->getText( 'authAction' ); |
| 301 | if ( !in_array( $this->authAction, static::$allowedActions, true ) ) { |
| 302 | $this->authAction = $this->getDefaultAction( $subPage ); |
| 303 | if ( $request->wasPosted() ) { |
| 304 | $continueAction = $this->getContinueAction( $this->authAction ); |
| 305 | if ( in_array( $continueAction, static::$allowedActions, true ) ) { |
| 306 | $this->authAction = $continueAction; |
| 307 | } |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | $allReqs = $this->getAuthManager()->getAuthenticationRequests( |
| 312 | $this->authAction, $this->getUser() ); |
| 313 | $this->authRequests = array_filter( $allReqs, function ( $req ) { |
| 314 | return !in_array( get_class( $req ), $this->getRequestBlacklist(), true ); |
| 315 | } ); |
| 316 | } |
| 317 | |
| 318 | /** |
| 319 | * Returns true if this is not the first step of the authentication. |
| 320 | * @return bool |
| 321 | */ |
| 322 | protected function isContinued() { |
| 323 | return in_array( $this->authAction, [ |
| 324 | AuthManager::ACTION_LOGIN_CONTINUE, |
| 325 | AuthManager::ACTION_CREATE_CONTINUE, |
| 326 | AuthManager::ACTION_LINK_CONTINUE, |
| 327 | ], true ); |
| 328 | } |
| 329 | |
| 330 | /** |
| 331 | * Gets the _CONTINUE version of an action. |
| 332 | * @param string $action An AuthManager::ACTION_* constant. |
| 333 | * @return string An AuthManager::ACTION_*_CONTINUE constant. |
| 334 | */ |
| 335 | protected function getContinueAction( $action ) { |
| 336 | switch ( $action ) { |
| 337 | case AuthManager::ACTION_LOGIN: |
| 338 | $action = AuthManager::ACTION_LOGIN_CONTINUE; |
| 339 | break; |
| 340 | case AuthManager::ACTION_CREATE: |
| 341 | $action = AuthManager::ACTION_CREATE_CONTINUE; |
| 342 | break; |
| 343 | case AuthManager::ACTION_LINK: |
| 344 | $action = AuthManager::ACTION_LINK_CONTINUE; |
| 345 | break; |
| 346 | } |
| 347 | return $action; |
| 348 | } |
| 349 | |
| 350 | /** |
| 351 | * Checks whether AuthManager is ready to perform the action. |
| 352 | * ACTION_CHANGE needs special verification (AuthManager::allowsAuthenticationData*) which is |
| 353 | * the caller's responsibility. |
| 354 | * @param string $action One of the AuthManager::ACTION_* constants in static::$allowedActions |
| 355 | * @return bool |
| 356 | */ |
| 357 | protected function isActionAllowed( $action ) { |
| 358 | $authManager = $this->getAuthManager(); |
| 359 | if ( !in_array( $action, static::$allowedActions, true ) ) { |
| 360 | throw new InvalidArgumentException( 'invalid action: ' . $action ); |
| 361 | } |
| 362 | |
| 363 | // calling getAuthenticationRequests can be expensive, avoid if possible |
| 364 | $requests = ( $action === $this->authAction ) ? $this->authRequests |
| 365 | : $authManager->getAuthenticationRequests( $action ); |
| 366 | if ( !$requests ) { |
| 367 | // no provider supports this action in the current state |
| 368 | return false; |
| 369 | } |
| 370 | |
| 371 | switch ( $action ) { |
| 372 | case AuthManager::ACTION_LOGIN: |
| 373 | case AuthManager::ACTION_LOGIN_CONTINUE: |
| 374 | return $authManager->canAuthenticateNow(); |
| 375 | case AuthManager::ACTION_CREATE: |
| 376 | case AuthManager::ACTION_CREATE_CONTINUE: |
| 377 | return $authManager->canCreateAccounts(); |
| 378 | case AuthManager::ACTION_LINK: |
| 379 | case AuthManager::ACTION_LINK_CONTINUE: |
| 380 | return $authManager->canLinkAccounts(); |
| 381 | case AuthManager::ACTION_CHANGE: |
| 382 | case AuthManager::ACTION_REMOVE: |
| 383 | case AuthManager::ACTION_UNLINK: |
| 384 | return true; |
| 385 | default: |
| 386 | // should never reach here but makes static code analyzers happy |
| 387 | throw new InvalidArgumentException( 'invalid action: ' . $action ); |
| 388 | } |
| 389 | } |
| 390 | |
| 391 | /** |
| 392 | * @param string $action One of the AuthManager::ACTION_* constants |
| 393 | * @param AuthenticationRequest[] $requests |
| 394 | * @return AuthenticationResponse |
| 395 | * @throws LogicException if $action is invalid |
| 396 | */ |
| 397 | protected function performAuthenticationStep( $action, array $requests ) { |
| 398 | if ( !in_array( $action, static::$allowedActions, true ) ) { |
| 399 | throw new InvalidArgumentException( 'invalid action: ' . $action ); |
| 400 | } |
| 401 | |
| 402 | $authManager = $this->getAuthManager(); |
| 403 | $returnToUrl = $this->getPageTitle( 'return' ) |
| 404 | ->getFullURL( $this->getPreservedParams( [ 'withToken' => true ] ), false, PROTO_HTTPS ); |
| 405 | |
| 406 | switch ( $action ) { |
| 407 | case AuthManager::ACTION_LOGIN: |
| 408 | return $authManager->beginAuthentication( $requests, $returnToUrl ); |
| 409 | case AuthManager::ACTION_LOGIN_CONTINUE: |
| 410 | return $authManager->continueAuthentication( $requests ); |
| 411 | case AuthManager::ACTION_CREATE: |
| 412 | return $authManager->beginAccountCreation( $this->getAuthority(), $requests, |
| 413 | $returnToUrl ); |
| 414 | case AuthManager::ACTION_CREATE_CONTINUE: |
| 415 | return $authManager->continueAccountCreation( $requests ); |
| 416 | case AuthManager::ACTION_LINK: |
| 417 | return $authManager->beginAccountLink( $this->getUser(), $requests, $returnToUrl ); |
| 418 | case AuthManager::ACTION_LINK_CONTINUE: |
| 419 | return $authManager->continueAccountLink( $requests ); |
| 420 | case AuthManager::ACTION_CHANGE: |
| 421 | case AuthManager::ACTION_REMOVE: |
| 422 | case AuthManager::ACTION_UNLINK: |
| 423 | if ( count( $requests ) > 1 ) { |
| 424 | throw new InvalidArgumentException( 'only one auth request can be changed at a time' ); |
| 425 | } |
| 426 | |
| 427 | if ( !$requests ) { |
| 428 | throw new InvalidArgumentException( 'no auth request' ); |
| 429 | } |
| 430 | $req = reset( $requests ); |
| 431 | $status = $authManager->allowsAuthenticationDataChange( $req ); |
| 432 | $this->getHookRunner()->onChangeAuthenticationDataAudit( $req, $status ); |
| 433 | if ( !$status->isGood() ) { |
| 434 | return AuthenticationResponse::newFail( $status->getMessage() ); |
| 435 | } |
| 436 | $authManager->changeAuthenticationData( $req ); |
| 437 | return AuthenticationResponse::newPass(); |
| 438 | default: |
| 439 | // should never reach here but makes static code analyzers happy |
| 440 | throw new InvalidArgumentException( 'invalid action: ' . $action ); |
| 441 | } |
| 442 | } |
| 443 | |
| 444 | /** |
| 445 | * Attempts to do an authentication step with the submitted data. |
| 446 | * Subclasses should probably call this from execute(). |
| 447 | * @return false|Status |
| 448 | * - false if there was no submit at all |
| 449 | * - a good Status wrapping an AuthenticationResponse if the form submit was successful. |
| 450 | * This does not necessarily mean that the authentication itself was successful; see the |
| 451 | * response for that. |
| 452 | * - a bad Status for form errors. |
| 453 | */ |
| 454 | protected function trySubmit() { |
| 455 | $status = false; |
| 456 | |
| 457 | $form = $this->getAuthForm( $this->authRequests, $this->authAction ); |
| 458 | $form->setSubmitCallback( [ $this, 'handleFormSubmit' ] ); |
| 459 | |
| 460 | if ( $this->getRequest()->wasPosted() ) { |
| 461 | // handle tokens manually; $form->tryAuthorizedSubmit only works for logged-in users |
| 462 | $requestTokenValue = $this->getRequest()->getVal( $this->getTokenName() ); |
| 463 | $sessionToken = $this->getToken(); |
| 464 | if ( $sessionToken->wasNew() ) { |
| 465 | return Status::newFatal( $this->messageKey( 'authform-newtoken' ) ); |
| 466 | } elseif ( !$requestTokenValue ) { |
| 467 | return Status::newFatal( $this->messageKey( 'authform-notoken' ) ); |
| 468 | } elseif ( !$sessionToken->match( $requestTokenValue ) ) { |
| 469 | return Status::newFatal( $this->messageKey( 'authform-wrongtoken' ) ); |
| 470 | } |
| 471 | |
| 472 | $form->prepareForm(); |
| 473 | $status = $form->trySubmit(); |
| 474 | |
| 475 | // HTMLForm submit return values are a mess; let's ensure it is false or a Status |
| 476 | // FIXME this probably should be in HTMLForm |
| 477 | if ( $status === true ) { |
| 478 | // not supposed to happen since our submit handler should always return a Status |
| 479 | throw new UnexpectedValueException( 'HTMLForm::trySubmit() returned true' ); |
| 480 | } elseif ( $status === false ) { |
| 481 | // form was not submitted; nothing to do |
| 482 | } elseif ( $status instanceof Status ) { |
| 483 | // already handled by the form; nothing to do |
| 484 | } elseif ( $status instanceof StatusValue ) { |
| 485 | // in theory not an allowed return type but nothing stops the submit handler from |
| 486 | // accidentally returning it so best check and fix |
| 487 | $status = Status::wrap( $status ); |
| 488 | } elseif ( is_string( $status ) ) { |
| 489 | $status = Status::newFatal( new RawMessage( '$1', [ $status ] ) ); |
| 490 | } elseif ( is_array( $status ) ) { |
| 491 | if ( is_string( reset( $status ) ) ) { |
| 492 | // @phan-suppress-next-line PhanParamTooFewUnpack |
| 493 | $status = Status::newFatal( ...$status ); |
| 494 | } elseif ( is_array( reset( $status ) ) ) { |
| 495 | $ret = Status::newGood(); |
| 496 | foreach ( $status as $message ) { |
| 497 | // @phan-suppress-next-line PhanParamTooFewUnpack |
| 498 | $ret->fatal( ...$message ); |
| 499 | } |
| 500 | $status = $ret; |
| 501 | } else { |
| 502 | throw new UnexpectedValueException( 'invalid HTMLForm::trySubmit() return value: ' |
| 503 | . 'first element of array is ' . get_debug_type( reset( $status ) ) ); |
| 504 | } |
| 505 | } else { |
| 506 | // not supposed to happen, but HTMLForm does not verify the return type |
| 507 | // from the submit callback; better safe then sorry! |
| 508 | throw new UnexpectedValueException( 'invalid HTMLForm::trySubmit() return type: ' |
| 509 | . get_debug_type( $status ) ); |
| 510 | } |
| 511 | |
| 512 | if ( ( !$status || !$status->isOK() ) && $this->isReturn ) { |
| 513 | // This is awkward. There was a form validation error, which means the data was not |
| 514 | // passed to AuthManager. Normally we would display the form with an error message, |
| 515 | // but for the data we received via the redirect flow that would not be helpful at all. |
| 516 | // Let's just submit the data to AuthManager directly instead. |
| 517 | LoggerFactory::getInstance( 'authentication' ) |
| 518 | ->warning( 'Validation error on return', [ 'data' => $form->mFieldData, |
| 519 | 'status' => $status->getWikiText( false, false, 'en' ) ] ); |
| 520 | $status = $this->handleFormSubmit( $form->mFieldData ); |
| 521 | } |
| 522 | } |
| 523 | |
| 524 | $changeActions = [ |
| 525 | AuthManager::ACTION_CHANGE, AuthManager::ACTION_REMOVE, AuthManager::ACTION_UNLINK |
| 526 | ]; |
| 527 | if ( in_array( $this->authAction, $changeActions, true ) && $status && !$status->isOK() ) { |
| 528 | $this->getHookRunner()->onChangeAuthenticationDataAudit( reset( $this->authRequests ), $status ); |
| 529 | } |
| 530 | |
| 531 | return $status; |
| 532 | } |
| 533 | |
| 534 | /** |
| 535 | * Submit handler callback for HTMLForm |
| 536 | * @internal |
| 537 | * @param array $data Submitted data |
| 538 | * @return Status |
| 539 | */ |
| 540 | public function handleFormSubmit( $data ) { |
| 541 | $requests = AuthenticationRequest::loadRequestsFromSubmission( $this->authRequests, $data ); |
| 542 | $response = $this->performAuthenticationStep( $this->authAction, $requests ); |
| 543 | |
| 544 | // we can't handle FAIL or similar as failure here since it might require changing the form |
| 545 | return Status::newGood( $response ); |
| 546 | } |
| 547 | |
| 548 | /** |
| 549 | * Returns URL query parameters which should be preserved between authentication requests. |
| 550 | * These should be used when generating links such as form submit or language switch. |
| 551 | * |
| 552 | * These parameters will be preserved in: |
| 553 | * - successive authentication steps (the form submit URL and the return URL for redirecting |
| 554 | * providers); |
| 555 | * - links that reload the same form somehow (e.g. language switcher links); |
| 556 | * - links for switching between the login and create account forms. |
| 557 | * |
| 558 | * @stable to override |
| 559 | * @param array $options (since 1.43) |
| 560 | * - reset (bool, default false): Reset the authentication process, i.e. omit parameters |
| 561 | * which are related to continuing in-progress authentication. |
| 562 | * - withToken (bool, default false): Include CSRF token |
| 563 | * Before 1.43, this was a boolean flag identical to the current 'withToken' option. |
| 564 | * That usage is deprecated. |
| 565 | * @phan-param array{reset?: bool, withToken?: bool}|bool $options |
| 566 | * @return array Array of parameter name => parameter value. |
| 567 | */ |
| 568 | protected function getPreservedParams( $options = [] ) { |
| 569 | if ( is_bool( $options ) ) { |
| 570 | wfDeprecated( __METHOD__ . ' boolean $options', '1.43' ); |
| 571 | $options = [ 'withToken' => $options ]; |
| 572 | } |
| 573 | $options += [ |
| 574 | 'reset' => false, |
| 575 | 'withToken' => false, |
| 576 | ]; |
| 577 | // Help Phan figure out that these fields are now definitely set - https://github.com/phan/phan/issues/4864 |
| 578 | '@phan-var array{reset: bool, withToken: bool} $options'; |
| 579 | $params = []; |
| 580 | $request = $this->getRequest(); |
| 581 | |
| 582 | $params += [ |
| 583 | 'uselang' => $request->getVal( 'uselang' ), |
| 584 | 'variant' => $request->getVal( 'variant' ), |
| 585 | 'returnto' => $request->getVal( 'returnto' ), |
| 586 | 'returntoquery' => $request->getVal( 'returntoquery' ), |
| 587 | 'returntoanchor' => $request->getVal( 'returntoanchor' ), |
| 588 | ]; |
| 589 | |
| 590 | if ( !$options['reset'] && $this->authAction !== $this->getDefaultAction( $this->subPage ) ) { |
| 591 | $params['authAction'] = $this->getContinueAction( $this->authAction ); |
| 592 | } |
| 593 | |
| 594 | if ( $options['withToken'] ) { |
| 595 | $params[$this->getTokenName()] = $this->getToken()->toString(); |
| 596 | } |
| 597 | |
| 598 | // Allow authentication extensions like CentralAuth to preserve their own |
| 599 | // query params during and after the authentication process. |
| 600 | $this->getHookRunner()->onAuthPreserveQueryParams( |
| 601 | $params, [ 'request' => $request, 'reset' => $options['reset'] ] |
| 602 | ); |
| 603 | |
| 604 | return array_filter( $params, static fn ( $val ) => $val !== null ); |
| 605 | } |
| 606 | |
| 607 | /** |
| 608 | * Generates a HTMLForm descriptor array from a set of authentication requests. |
| 609 | * @stable to override |
| 610 | * @param AuthenticationRequest[] $requests |
| 611 | * @param string $action AuthManager action name (one of the AuthManager::ACTION_* constants) |
| 612 | * @return array[] |
| 613 | */ |
| 614 | protected function getAuthFormDescriptor( $requests, $action ) { |
| 615 | $fieldInfo = AuthenticationRequest::mergeFieldInfo( $requests ); |
| 616 | $formDescriptor = $this->fieldInfoToFormDescriptor( $requests, $fieldInfo, $action ); |
| 617 | |
| 618 | $this->addTabIndex( $formDescriptor ); |
| 619 | |
| 620 | return $formDescriptor; |
| 621 | } |
| 622 | |
| 623 | /** |
| 624 | * @stable to override |
| 625 | * @param AuthenticationRequest[] $requests |
| 626 | * @param string $action AuthManager action name (one of the AuthManager::ACTION_* constants) |
| 627 | * @return HTMLForm |
| 628 | */ |
| 629 | protected function getAuthForm( array $requests, $action ) { |
| 630 | $formDescriptor = $this->getAuthFormDescriptor( $requests, $action ); |
| 631 | $context = $this->getContext(); |
| 632 | if ( $context->getRequest() !== $this->getRequest() ) { |
| 633 | // We have overridden the request, need to make sure the form uses that too. |
| 634 | $context = new DerivativeContext( $this->getContext() ); |
| 635 | $context->setRequest( $this->getRequest() ); |
| 636 | } |
| 637 | $form = HTMLForm::factory( 'ooui', $formDescriptor, $context ); |
| 638 | $form->setAction( $this->getFullTitle()->getFullURL( $this->getPreservedParams() ) ); |
| 639 | $form->addHiddenField( $this->getTokenName(), $this->getToken()->toString() ); |
| 640 | $form->addHiddenField( 'authAction', $this->authAction ); |
| 641 | $form->suppressDefaultSubmit( !$this->needsSubmitButton( $requests ) ); |
| 642 | |
| 643 | return $form; |
| 644 | } |
| 645 | |
| 646 | /** |
| 647 | * Display the form. |
| 648 | * @param false|Status|StatusValue $status A form submit status, as in HTMLForm::trySubmit() |
| 649 | */ |
| 650 | protected function displayForm( $status ) { |
| 651 | if ( $status instanceof StatusValue ) { |
| 652 | $status = Status::wrap( $status ); |
| 653 | } |
| 654 | $form = $this->getAuthForm( $this->authRequests, $this->authAction ); |
| 655 | $form->prepareForm()->displayForm( $status ); |
| 656 | } |
| 657 | |
| 658 | /** |
| 659 | * Returns true if the form built from the given AuthenticationRequests needs a submit button. |
| 660 | * Providers using redirect flow (e.g. Google login) need their own submit buttons; if using |
| 661 | * one of those custom buttons is the only way to proceed, there is no point in displaying the |
| 662 | * default button which won't do anything useful. |
| 663 | * @stable to override |
| 664 | * |
| 665 | * @param AuthenticationRequest[] $requests An array of AuthenticationRequests from which the |
| 666 | * form will be built |
| 667 | * @return bool |
| 668 | */ |
| 669 | protected function needsSubmitButton( array $requests ) { |
| 670 | $customSubmitButtonPresent = false; |
| 671 | |
| 672 | // Secondary and preauth providers always need their data; they will not care what button |
| 673 | // is used, so they can be ignored. So can OPTIONAL buttons createdby primary providers; |
| 674 | // that's the point in being optional. Se we need to check whether all primary providers |
| 675 | // have their own buttons and whether there is at least one button present. |
| 676 | foreach ( $requests as $req ) { |
| 677 | if ( $req->required === AuthenticationRequest::PRIMARY_REQUIRED ) { |
| 678 | if ( $this->hasOwnSubmitButton( $req ) ) { |
| 679 | $customSubmitButtonPresent = true; |
| 680 | } else { |
| 681 | return true; |
| 682 | } |
| 683 | } |
| 684 | } |
| 685 | return !$customSubmitButtonPresent; |
| 686 | } |
| 687 | |
| 688 | /** |
| 689 | * Checks whether the given AuthenticationRequest has its own submit button. |
| 690 | * @param AuthenticationRequest $req |
| 691 | * @return bool |
| 692 | */ |
| 693 | protected function hasOwnSubmitButton( AuthenticationRequest $req ) { |
| 694 | foreach ( $req->getFieldInfo() as $info ) { |
| 695 | if ( $info['type'] === 'button' ) { |
| 696 | return true; |
| 697 | } |
| 698 | } |
| 699 | return false; |
| 700 | } |
| 701 | |
| 702 | /** |
| 703 | * Adds a sequential tabindex starting from 1 to all form elements. This way the user can |
| 704 | * use the tab key to traverse the form without having to step through all links and such. |
| 705 | * @param array[] &$formDescriptor |
| 706 | */ |
| 707 | protected function addTabIndex( &$formDescriptor ) { |
| 708 | $i = 1; |
| 709 | foreach ( $formDescriptor as &$definition ) { |
| 710 | $class = false; |
| 711 | if ( array_key_exists( 'class', $definition ) ) { |
| 712 | $class = $definition['class']; |
| 713 | } elseif ( array_key_exists( 'type', $definition ) ) { |
| 714 | $class = HTMLForm::$typeMappings[$definition['type']]; |
| 715 | } |
| 716 | if ( $class !== HTMLInfoField::class ) { |
| 717 | $definition['tabindex'] = $i; |
| 718 | $i++; |
| 719 | } |
| 720 | } |
| 721 | } |
| 722 | |
| 723 | /** |
| 724 | * Returns the CSRF token. |
| 725 | * @stable to override |
| 726 | * @return Token |
| 727 | */ |
| 728 | protected function getToken() { |
| 729 | return $this->getRequest()->getSession()->getToken( 'AuthManagerSpecialPage:' |
| 730 | . $this->getName() ); |
| 731 | } |
| 732 | |
| 733 | /** |
| 734 | * Returns the name of the CSRF token (under which it should be found in the POST or GET data). |
| 735 | * @stable to override |
| 736 | * @return string |
| 737 | */ |
| 738 | protected function getTokenName() { |
| 739 | return 'wpAuthToken'; |
| 740 | } |
| 741 | |
| 742 | /** |
| 743 | * Turns a field info array into a form descriptor. Behavior can be modified by the |
| 744 | * AuthChangeFormFields hook. |
| 745 | * @param AuthenticationRequest[] $requests |
| 746 | * @param array $fieldInfo Field information, in the format used by |
| 747 | * AuthenticationRequest::getFieldInfo() |
| 748 | * @param string $action One of the AuthManager::ACTION_* constants |
| 749 | * @return array A form descriptor that can be passed to HTMLForm |
| 750 | */ |
| 751 | protected function fieldInfoToFormDescriptor( array $requests, array $fieldInfo, $action ) { |
| 752 | $formDescriptor = []; |
| 753 | foreach ( $fieldInfo as $fieldName => $singleFieldInfo ) { |
| 754 | $formDescriptor[$fieldName] = self::mapSingleFieldInfo( $singleFieldInfo, $fieldName ); |
| 755 | } |
| 756 | |
| 757 | $requestSnapshot = serialize( $requests ); |
| 758 | $this->onAuthChangeFormFields( $requests, $fieldInfo, $formDescriptor, $action ); |
| 759 | $this->getHookRunner()->onAuthChangeFormFields( $requests, $fieldInfo, |
| 760 | $formDescriptor, $action ); |
| 761 | if ( $requestSnapshot !== serialize( $requests ) ) { |
| 762 | LoggerFactory::getInstance( 'authentication' )->warning( |
| 763 | 'AuthChangeFormFields hook changed auth requests' ); |
| 764 | } |
| 765 | |
| 766 | // Process the special 'weight' property, which is a way for AuthChangeFormFields hook |
| 767 | // subscribers (who only see one field at a time) to influence ordering. |
| 768 | self::sortFormDescriptorFields( $formDescriptor ); |
| 769 | |
| 770 | return $formDescriptor; |
| 771 | } |
| 772 | |
| 773 | /** |
| 774 | * Maps an authentication field configuration for a single field (as returned by |
| 775 | * AuthenticationRequest::getFieldInfo()) to a HTMLForm field descriptor. |
| 776 | * @param array $singleFieldInfo |
| 777 | * @param string $fieldName |
| 778 | * @return array |
| 779 | */ |
| 780 | protected static function mapSingleFieldInfo( $singleFieldInfo, $fieldName ) { |
| 781 | $type = self::mapFieldInfoTypeToFormDescriptorType( $singleFieldInfo['type'] ); |
| 782 | $descriptor = [ |
| 783 | 'type' => $type, |
| 784 | // Do not prefix input name with 'wp'. This is important for the redirect flow. |
| 785 | 'name' => $fieldName, |
| 786 | ]; |
| 787 | |
| 788 | if ( $type === 'submit' && isset( $singleFieldInfo['label'] ) ) { |
| 789 | $descriptor['default'] = $singleFieldInfo['label']->plain(); |
| 790 | } elseif ( $type !== 'submit' ) { |
| 791 | $descriptor += array_filter( [ |
| 792 | // help-message is omitted as it is usually not really useful for a web interface |
| 793 | 'label-message' => self::getField( $singleFieldInfo, 'label' ), |
| 794 | ] ); |
| 795 | |
| 796 | if ( isset( $singleFieldInfo['options'] ) ) { |
| 797 | $descriptor['options'] = array_flip( array_map( static function ( $message ) { |
| 798 | /** @var Message $message */ |
| 799 | return $message->parse(); |
| 800 | }, $singleFieldInfo['options'] ) ); |
| 801 | } |
| 802 | |
| 803 | if ( isset( $singleFieldInfo['value'] ) ) { |
| 804 | $descriptor['default'] = $singleFieldInfo['value']; |
| 805 | } |
| 806 | |
| 807 | if ( empty( $singleFieldInfo['optional'] ) ) { |
| 808 | $descriptor['required'] = true; |
| 809 | } |
| 810 | } |
| 811 | |
| 812 | return $descriptor; |
| 813 | } |
| 814 | |
| 815 | /** |
| 816 | * Sort the fields of a form descriptor by their 'weight' property. (Fields with higher weight |
| 817 | * are shown closer to the bottom; weight defaults to 0. Negative weight is allowed.) |
| 818 | * Keep order if weights are equal. |
| 819 | */ |
| 820 | protected static function sortFormDescriptorFields( array &$formDescriptor ) { |
| 821 | $i = 0; |
| 822 | foreach ( $formDescriptor as &$field ) { |
| 823 | $field['__index'] = $i++; |
| 824 | } |
| 825 | unset( $field ); |
| 826 | uasort( $formDescriptor, static function ( $first, $second ) { |
| 827 | return self::getField( $first, 'weight', 0 ) <=> self::getField( $second, 'weight', 0 ) |
| 828 | ?: $first['__index'] <=> $second['__index']; |
| 829 | } ); |
| 830 | foreach ( $formDescriptor as &$field ) { |
| 831 | unset( $field['__index'] ); |
| 832 | } |
| 833 | } |
| 834 | |
| 835 | /** |
| 836 | * Get an array value, or a default if it does not exist. |
| 837 | * @param array $array |
| 838 | * @param string $fieldName |
| 839 | * @param mixed|null $default |
| 840 | * @return mixed |
| 841 | */ |
| 842 | protected static function getField( array $array, $fieldName, $default = null ) { |
| 843 | if ( array_key_exists( $fieldName, $array ) ) { |
| 844 | return $array[$fieldName]; |
| 845 | } else { |
| 846 | return $default; |
| 847 | } |
| 848 | } |
| 849 | |
| 850 | /** |
| 851 | * Maps AuthenticationRequest::getFieldInfo() types to HTMLForm types |
| 852 | * |
| 853 | * @param string $type |
| 854 | * |
| 855 | * @return string |
| 856 | */ |
| 857 | protected static function mapFieldInfoTypeToFormDescriptorType( $type ) { |
| 858 | $map = [ |
| 859 | 'string' => 'text', |
| 860 | 'password' => 'password', |
| 861 | 'select' => 'select', |
| 862 | 'checkbox' => 'check', |
| 863 | 'multiselect' => 'multiselect', |
| 864 | 'button' => 'submit', |
| 865 | 'hidden' => 'hidden', |
| 866 | 'null' => 'info', |
| 867 | ]; |
| 868 | if ( !array_key_exists( $type, $map ) ) { |
| 869 | throw new InvalidArgumentException( 'invalid field type: ' . $type ); |
| 870 | } |
| 871 | return $map[$type]; |
| 872 | } |
| 873 | |
| 874 | /** |
| 875 | * Apply defaults to a form descriptor, without creating non-existent fields. |
| 876 | * |
| 877 | * Overrides $formDescriptor fields with their $defaultFormDescriptor equivalent, but |
| 878 | * only if the field is defined in $fieldInfo, uses the special 'basefield' property to |
| 879 | * refer to a $fieldInfo field, or it is not a real field (e.g. help text). Applies some |
| 880 | * common-sense behaviors to ensure related fields are overridden in a consistent manner. |
| 881 | * @param array $fieldInfo |
| 882 | * @param array $formDescriptor |
| 883 | * @param array $defaultFormDescriptor |
| 884 | * @return array |
| 885 | */ |
| 886 | protected static function mergeDefaultFormDescriptor( |
| 887 | array $fieldInfo, array $formDescriptor, array $defaultFormDescriptor |
| 888 | ) { |
| 889 | // keep the ordering from $defaultFormDescriptor where there is no explicit weight |
| 890 | foreach ( $defaultFormDescriptor as $fieldName => $defaultField ) { |
| 891 | // remove everything that is not in the fieldinfo, is not marked as a supplemental field |
| 892 | // to something in the fieldinfo, and is not an info field or a submit button |
| 893 | if ( |
| 894 | !isset( $fieldInfo[$fieldName] ) |
| 895 | && ( |
| 896 | !isset( $defaultField['baseField'] ) |
| 897 | || !isset( $fieldInfo[$defaultField['baseField']] ) |
| 898 | ) |
| 899 | && ( |
| 900 | !isset( $defaultField['type'] ) |
| 901 | || !in_array( $defaultField['type'], [ 'submit', 'info' ], true ) |
| 902 | ) |
| 903 | ) { |
| 904 | $defaultFormDescriptor[$fieldName] = null; |
| 905 | continue; |
| 906 | } |
| 907 | |
| 908 | // default message labels should always take priority |
| 909 | $requestField = $formDescriptor[$fieldName] ?? []; |
| 910 | if ( |
| 911 | isset( $defaultField['label'] ) |
| 912 | || isset( $defaultField['label-message'] ) |
| 913 | || isset( $defaultField['label-raw'] ) |
| 914 | ) { |
| 915 | unset( $requestField['label'], $requestField['label-message'], $defaultField['label-raw'] ); |
| 916 | } |
| 917 | |
| 918 | $defaultFormDescriptor[$fieldName] += $requestField; |
| 919 | } |
| 920 | |
| 921 | return array_filter( $defaultFormDescriptor + $formDescriptor ); |
| 922 | } |
| 923 | } |
| 924 | |
| 925 | /** @deprecated class alias since 1.41 */ |
| 926 | class_alias( AuthManagerSpecialPage::class, 'AuthManagerSpecialPage' ); |