Provide list of editable fields via OCS API

Fixes #7983

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>

apps/provisioning_api/appinfo/routes.php

@@ -44,6 +44,7 @@ return [
 		['root' => '/cloud', 'name' => 'Users#addUser', 'url' => '/users', 'verb' => 'POST'],
 		['root' => '/cloud', 'name' => 'Users#getUser', 'url' => '/users/{userId}', 'verb' => 'GET'],
 		['root' => '/cloud', 'name' => 'Users#getCurrentUser', 'url' => '/user', 'verb' => 'GET'],
+		['root' => '/cloud', 'name' => 'Users#getEditableField', 'url' => '/user/fields', 'verb' => 'GET'],
 		['root' => '/cloud', 'name' => 'Users#editUser', 'url' => '/users/{userId}', 'verb' => 'PUT'],
 		['root' => '/cloud', 'name' => 'Users#deleteUser', 'url' => '/users/{userId}', 'verb' => 'DELETE'],
 		['root' => '/cloud', 'name' => 'Users#enableUser', 'url' => '/users/{userId}/enable', 'verb' => 'PUT'],

apps/provisioning_api/lib/Controller/UsersController.php

@@ -296,6 +296,38 @@ class UsersController extends OCSController {
 		return $data;
 	}
 
+	/**
+	 * @NoAdminRequired
+	 * @NoSubAdminRequired
+	 */
+	public function getEditableField() {
+		$permittedFields = [];
+
+		// Editing self (display, email)
+		if ($this->config->getSystemValue('allow_user_to_change_display_name', true) !== false) {
+			$permittedFields[] = AccountManager::PROPERTY_DISPLAYNAME;
+			$permittedFields[] = AccountManager::PROPERTY_EMAIL;
+		}
+
+		$permittedFields[] = 'password';
+		if ($this->config->getSystemValue('force_language', false) === false) {
+			$permittedFields[] = 'language';
+		}
+
+		if ($this->appManager->isEnabledForUser('federatedfilesharing')) {
+			$federatedFileSharing = new \OCA\FederatedFileSharing\AppInfo\Application();
+			$shareProvider = $federatedFileSharing->getFederatedShareProvider();
+			if ($shareProvider->isLookupServerUploadEnabled()) {
+				$permittedFields[] = AccountManager::PROPERTY_PHONE;
+				$permittedFields[] = AccountManager::PROPERTY_ADDRESS;
+				$permittedFields[] = AccountManager::PROPERTY_WEBSITE;
+				$permittedFields[] = AccountManager::PROPERTY_TWITTER;
+			}
+		}
+
+		return new DataResponse($permittedFields);
+	}
+
 	/**
 	 * @NoAdminRequired
 	 * @NoSubAdminRequired