protected String buildRedirectUrlToLoginPage(
HttpServletRequest request,
HttpServletResponse response,
AuthenticationException authException) {
String loginForm = determineUrlToUseForThisRequest(request, response, authException);
if (UrlUtils.isAbsoluteUrl(loginForm)) {
return loginForm;
}
int serverPort = portResolver.getServerPort(request);
String scheme = request.getScheme();
RedirectUrlBuilder urlBuilder = new RedirectUrlBuilder();
urlBuilder.setScheme(scheme);
urlBuilder.setServerName(request.getServerName());
urlBuilder.setPort(serverPort);
urlBuilder.setContextPath(request.getContextPath());
urlBuilder.setPathInfo(loginForm);
if (forceHttps && "http".equals(scheme)) {
Integer httpsPort = portMapper.lookupHttpsPort(Integer.valueOf(serverPort));
if (httpsPort != null) {
// Overwrite scheme and port in the redirect URL
urlBuilder.setScheme("https");
urlBuilder.setPort(httpsPort.intValue());
} else {
logger.warn(
"Unable to redirect to HTTPS as no port mapping found for HTTP port " + serverPort);
}
}
return urlBuilder.getUrl();
}
/**
* Builds a URL to redirect the supplied request to HTTPS. Used to redirect the current request to
* HTTPS, before doing a forward to the login page.
*/
protected String buildHttpsRedirectUrlForRequest(HttpServletRequest request)
throws IOException, ServletException {
int serverPort = portResolver.getServerPort(request);
Integer httpsPort = portMapper.lookupHttpsPort(Integer.valueOf(serverPort));
if (httpsPort != null) {
RedirectUrlBuilder urlBuilder = new RedirectUrlBuilder();
urlBuilder.setScheme("https");
urlBuilder.setServerName(request.getServerName());
urlBuilder.setPort(httpsPort.intValue());
urlBuilder.setContextPath(request.getContextPath());
urlBuilder.setServletPath(request.getServletPath());
urlBuilder.setPathInfo(request.getPathInfo());
urlBuilder.setQuery(request.getQueryString());
return urlBuilder.getUrl();
}
// Fall through to server-side forward with warning message
logger.warn("Unable to redirect to HTTPS as no port mapping found for HTTP port " + serverPort);
return null;
}