IdP access to server environment variables

[Brent Putman]

On 9/29/11 11:39 AM, Cantor, Scott wrote:
> On 9/29/11 11:25 AM, "Liam Hoekenga" <liamr at umich.edu> wrote:
>> We're using mod_proxy and mod_proxy_ajp.  I know that mod_proxy_ajp
>> will forward any environment variable with the AJP_ prefix to tomcat.
>> Is it then possible to access them?  (Maybe
>> $requestContext.getAttribute("variableName")?)
> I believe the AJP thing reflects them as headers once they get to Tomcat,
> but that's a dim recollection.
>

It's actually as HttpServletRequest attributes, so something like
httpServletRequest.getAttribute(name), which returns an Object.

You can get at the HttpServletRequest in the IdP $requestContext. 
Off-hand I don't have it exactly, but something like getting the
$request.getInboundMessageTransportand casting it to the actual impl,
which is an HttpServletRequestAdapter, which exposes the servlet
request. (yes, casting is bad and brittle, but it's all we currently have).