Get alias url and redirect magento

if($this->getRequest()->isSecure()) {
$requestUri = $this->getRequest()->getRequestUri();
$requestUri = explode('?', $requestUri);
if(isset($requestUri[1])) {
$requestUri = $requestUri[1];
} else {
$requestUri = '';
}
if ($alias = $this->getRequest()->getAlias(Mage_Core_Model_Url_Rewrite::REWRITE_REQUEST_PATH_ALIAS)) {
$url = Mage::getBaseUrl('link', false).ltrim($alias, '/');
} else {
$url = Mage::getBaseUrl('link', false).ltrim($this->getRequest()->getPathInfo(), '/');
}
if(!empty($requestUri)) {
$url .= '?' . $requestUri;
}
$this->getResponse()
->setRedirect($url)
->sendResponse();
exit;
}