[keycloak-user] Unable to get SAML ForceAuthn to work

[Neil Russell]

Hi John, 

The lexical space for a boolean in the document you referenced is defined as:
   -An instance of a datatype that is defined as ·boolean· can have the following legal literals {true, false, 1, 0}.

That document seems to confirm that 1 or 0 is compliant. 

Neil

-----Original Message-----
From: John Dennis <jdennis at redhat.com> 
Sent: Thursday, August 29, 2019 1:00 PM
To: Neil Russell <nrussell at egbc.ca>; 'keycloak-user at lists.jboss.org' <keycloak-user at lists.jboss.org>
Subject: Re: [keycloak-user] Unable to get SAML ForceAuthn to work

On 8/29/19 3:03 PM, Neil Russell wrote:
> Hey,
> 
> I'm trying to get ForceAuthn to work with a third party who is using Shibboleth but have been unable to get it to force re-authentication if I have an existing session. I've inspected the SAML request and ForceAuthn is being passed in the request, one issue is that Shibboleth passes ForceAuthn="1" instead of ForceAuthn="true" and the parser doesn't appear to handle that. I made a fix to the StaxParserUtil class to try and get it working but even though I can now see that parser is returning true when the ForceAuthn attribute is read I'm still not getting the expected behaviour and I'm not sure where to look next.
> 
> Any suggestions would be appreciated, am I looking in completely the wrong place?

The ForceAuthn attribute is defined as an xsi:boolean. The XML schema
(https://www.w3.org/TR/xmlschema-2/#boolean) defines a boolean as either "true" or "false", it's case sensitive, no other values are permitted. 
Sounds like the Shibboleth SP is non-compliant.


--
John Dennis