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coldfusioncoldfusion-9

Retrieving Common Access Card (CAC) information from a client

So I found some code

<cfset x509 = GetPageContext().getRequest().getAttribute("javax.servlet.request.X509Certificate") />


<cfoutput>not before = #x509[1].getNotBefore()#</cfoutput><br/>
<cfoutput>not after = #x509[1].getNotAfter()#<br></cfoutput>
<cfoutput>#ToBase64(x509[1].getEncoded())#<br></cfoutput>
<cfoutput>#x509[1].getIssuerDN()#<br></cfoutput>
<cfoutput>#x509[1].getIssuerX500Principal()#<br></cfoutput>

What I want this code to do is display the information from the CAC, instead I am getting an error Variable X509 is undefined...

Edit

An alternate solution seems to be to use CGI.CERT_SUBJECT however I am not exacly sure how to get this variable to be anything other than an empty string. FWIW I am try to get this to work on a standalone coldfusion server.

Solution

  • The getAttribute() method returns a NULL variable when the attribute is not found, which is what's happening in this case. You have to see if it's defined before you can display it.

    <cfif StructKeyExists( variables, "x509" )>
     { Code }
</cfif>

    On how to get the attribute you're after, I couldn't tell you, but this will prevent the error from occuring.