Hi
As so many others before me, I went through the *LoginSecurityFAQ* and have
been reading about *passing the SESSIONID from the client to the server in
the payload for each and every request*. The message is that we cannot trust
the HttpSession server side because of potential CSRF attacks.
Question :
- Do I have to *add an additional parameter SESSIONID to each and every
service call* that I am launching from GWT to the server ?
- Or perhaps I can attach the *SESSIONID as request attribute*, so my
service interfaces stay clean of this extra parameter ?
- I also noticed that in earlier versions of RfServlet there was a *init
parameter UserInfo* but this seems to have *disappeared*. I never used it
but I suspect this is some mechanism to address the above issues ? Is
there some replacement mechanism ?
Old implementation (part of doPost) of RequestFactoryServlet :
// Check that user is logged in before proceeding
UserInformation userInfo =
UserInformation.getCurrentUserInformation(request.getHeader("pageurl"));
if (!userInfo.isUserLoggedIn()) {
response.setHeader("login", userInfo.getLoginUrl());
response.sendError(HttpServletResponse.SC_UNAUTHORIZED);
} else {
response.setHeader("userId", String.format("%s",
userInfo.getId()));
response.setStatus(HttpServletResponse.SC_OK);
RequestProcessor<String> requestProcessor = new
JsonRequestProcessor();
requestProcessor.setOperationRegistry(new
ReflectionBasedOperationRegistry(
new DefaultSecurityProvider()));
requestProcessor.setExceptionHandler(exceptionHandler);
response.setContentType(RequestFactory.JSON_CONTENT_TYPE_UTF8);
writer.print(requestProcessor.decodeAndInvokeRequest(jsonRequestString));
writer.flush();
}
Thx
Koen
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