nextcloud / server

		// address

		$oldDisplayName = $user->getDisplayName();

		$oldDisplayName = is_null($oldDisplayName) ? '' : $oldDisplayName;

		if (isset($data[AccountManager::PROPERTY_DISPLAYNAME]['value'])

			&& $oldDisplayName !== $data[AccountManager::PROPERTY_DISPLAYNAME]['value']

		) {

			$result = $user->setDisplayName($data[AccountManager::PROPERTY_DISPLAYNAME]['value']);

			if ($result === false) {

				throw new ForbiddenException($this->l10n->t('Unable to change full name'));

			}

		}

		$oldEmailAddress = $user->getEMailAddress();

		$oldEmailAddress = is_null($oldEmailAddress) ? '' : $oldEmailAddress;

		$oldEmailAddress = $user->getEMailAddress();

		$oldEmailAddress = is_null($oldEmailAddress) ? '' : $oldEmailAddress;

		if (isset($data[AccountManager::PROPERTY_EMAIL]['value'])

			&& $oldEmailAddress !== $data[AccountManager::PROPERTY_EMAIL]['value']

		) {

			// this is the only permission a backend provides and is also used

			// for the permission of setting a email address

			if (!$user->canChangeDisplayName()) {

				throw new ForbiddenException($this->l10n->t('Unable to change email address'));

			}

			$user->setEMailAddress($data[AccountManager::PROPERTY_EMAIL]['value']);

		}

		$this->accountManager->updateUser($user, $data);

	}