#
#  ABFAB Trust router policies.
#
#	$Id$
#


#
# Verify rp parameters
#
psk_authorize {
	if (&TLS-PSK-Identity) {
		# TODO: may need to check trust-router-apc as well
		if ("%{psksql:select distinct keyid from authorizations_keys where keyid = '%{tls-psk-identity}' and '%{trust-router-coi}' like coi and '%{gss-acceptor-realm-name}' like acceptor_realm and '%{gss-acceptor-host-name}' like hostname;}") {
			# do things here
		}
		else {
		update reply {
			Reply-Message = "RP not authorized for this ABFAB request"
			}
			reject
		}
	}
}

abfab_client_check {
	# check that GSS-Acceptor-Host-Name is correct
	if ("%{client:gss_acceptor_host_name}") {
		if (&request:GSS-Acceptor-Host-Name) {
			if (&request:GSS-Acceptor-Host-Name != "%{client:gss_acceptor_host_name}") {
				update reply {
				        Reply-Message = "GSS-Acceptor-Host-Name incorrect"
					}
				reject
			}
		}
		else {
			# set GSS-Acceptor-Host-Name if it is not set by the mechanism 
			# but it is defined in the client configuration
			update request {
				GSS-Acceptor-Host-Name = "%{client:gss_acceptor_host_name}"
			}
		}
	}

	# set Trust-Router-COI attribute from the client configuration
	if ("%{client:trust_router_coi}") {
		update request {
			Trust-Router-COI := "%{client:trust_router_coi}"
		}
	}

	# set GSS-Acceptor-Realm-Name attribute from the client configuration
	if ("%{client:gss_acceptor_realm_name}") {
		update request {
			GSS-Acceptor-Realm-Name := "%{client:gss_acceptor_realm_name}"
		}
	}
	
	# set GSS-Acceptor-Service-Name attribute from the client configuration
	if ("%{client:gss_acceptor_service_name}") {
		update request {
			GSS-Acceptor-Service-Name = "%{client:gss_acceptor_service_name}"
		}
	}

}

#  A policy which is used to validate channel-bindings.
#
abfab_channel_bindings {
	if (&GSS-Acceptor-Service-Name && (&outer.request:GSS-Acceptor-Service-Name != &GSS-Acceptor-Service-Name)) {
		reject
	}

	if (&GSS-Acceptor-Host-Name && &outer.request:GSS-Acceptor-Host-Name != &GSS-Acceptor-Host-Name ) {
		reject
	}

	if (&GSS-Acceptor-Realm-Name && &outer.request:GSS-Acceptor-Realm-Name != &GSS-Acceptor-Realm-Name ) {
		reject
	}

	if (&GSS-Acceptor-Service-Name || &GSS-Acceptor-Realm-Name || &GSS-Acceptor-Host-Name) {
		update control {
			&Chbind-Response-Code := success
		}

		#
		#  ACK the attributes in the request.
		#
		#  If any one of these attributes don't exist in the request,
		#  then they won't be copied to the reply.
		#
		update reply {
			&GSS-Acceptor-Service-Name = &GSS-Acceptor-Service-Name
			&GSS-Acceptor-Host-Name = &GSS-Acceptor-Host-Name
			&GSS-Acceptor-Realm-Name = &GSS-Acceptor-Realm-Name
		}
	}

	#
	#  Return "handled" so that the "authenticate" section isn't used.
	#
	handled
}