1 files changed, 111 insertions, 0 deletions
diff --git a/www/wiki/includes/specials/SpecialLinkAccounts.php b/www/wiki/includes/specials/SpecialLinkAccounts.php
new file mode 100644
index 00000000..da10b90b
--- /dev/null
+++ b/www/wiki/includes/specials/SpecialLinkAccounts.php
@@ -0,0 +1,111 @@
+<?php
+
+use MediaWiki\Auth\AuthenticationRequest;
+use MediaWiki\Auth\AuthenticationResponse;
+use MediaWiki\Auth\AuthManager;
+
+/**
+ * Links/unlinks external accounts to the current user.
+ *
+ * To interact with this page, account providers need to register themselves with AuthManager.
+ */
+class SpecialLinkAccounts extends AuthManagerSpecialPage {
+	protected static $allowedActions = [
+		AuthManager::ACTION_LINK, AuthManager::ACTION_LINK_CONTINUE,
+	];
+
+	public function __construct() {
+		parent::__construct( 'LinkAccounts' );
+	}
+
+	protected function getGroupName() {
+		return 'users';
+	}
+
+	public function isListed() {
+		return AuthManager::singleton()->canLinkAccounts();
+	}
+
+	protected function getRequestBlacklist() {
+		return $this->getConfig()->get( 'ChangeCredentialsBlacklist' );
+	}
+
+	/**
+	 * @param null|string $subPage
+	 * @throws MWException
+	 * @throws PermissionsError
+	 */
+	public function execute( $subPage ) {
+		$this->setHeaders();
+		$this->loadAuth( $subPage );
+
+		if ( !$this->isActionAllowed( $this->authAction ) ) {
+			if ( $this->authAction === AuthManager::ACTION_LINK ) {
+				// looks like no linking provider is installed or willing to take this user
+				$titleMessage = wfMessage( 'cannotlink-no-provider-title' );
+				$errorMessage = wfMessage( 'cannotlink-no-provider' );
+				throw new ErrorPageError( $titleMessage, $errorMessage );
+			} else {
+				// user probably back-button-navigated into an auth session that no longer exists
+				// FIXME would be nice to show a message
+				$this->getOutput()->redirect( $this->getPageTitle()->getFullURL( '', false,
+					PROTO_HTTPS ) );
+				return;
+			}
+		}
+
+		$this->outputHeader();
+
+		$status = $this->trySubmit();
+
+		if ( $status === false || !$status->isOK() ) {
+			$this->displayForm( $status );
+			return;
+		}
+
+		$response = $status->getValue();
+
+		switch ( $response->status ) {
+			case AuthenticationResponse::PASS:
+				$this->success();
+				break;
+			case AuthenticationResponse::FAIL:
+				$this->loadAuth( '', AuthManager::ACTION_LINK, true );
+				$this->displayForm( StatusValue::newFatal( $response->message ) );
+				break;
+			case AuthenticationResponse::REDIRECT:
+				$this->getOutput()->redirect( $response->redirectTarget );
+				break;
+			case AuthenticationResponse::UI:
+				$this->authAction = AuthManager::ACTION_LINK_CONTINUE;
+				$this->authRequests = $response->neededRequests;
+				$this->displayForm( StatusValue::newFatal( $response->message ) );
+				break;
+			default:
+				throw new LogicException( 'invalid AuthenticationResponse' );
+		}
+	}
+
+	protected function getDefaultAction( $subPage ) {
+		return AuthManager::ACTION_LINK;
+	}
+
+	/**
+	 * @param AuthenticationRequest[] $requests
+	 * @param string $action AuthManager action name, should be ACTION_LINK or ACTION_LINK_CONTINUE
+	 * @return HTMLForm
+	 */
+	protected function getAuthForm( array $requests, $action ) {
+		$form = parent::getAuthForm( $requests, $action );
+		$form->setSubmitTextMsg( 'linkaccounts-submit' );
+		return $form;
+	}
+
+	/**
+	 * Show a success message.
+	 */
+	protected function success() {
+		$this->loadAuth( '', AuthManager::ACTION_LINK, true );
+		$this->displayForm( StatusValue::newFatal( $this->msg( 'linkaccounts-success-text' ) ) );
+	}
+}