*** /dev/shm/cas-proxy-validate.py	2011-10-06 10:48:11.189232230 +0200
--- /dev/shm/cas-proxy-validate2.py	2011-10-06 11:07:07.094871738 +0200
***************
*** 43,48 ****
--- 43,52 ----
      def _runAsCGI(self):
          if self._cgiChecks():
              form = cgi.FieldStorage()
+ 	    if form.list == []:
+ 		message = "Empty parameters : assuming cert. validation"
+ 		self._printCGIError(message, 200)
+ 		return
              if form.has_key("pgtId") and form.has_key("pgtIou"):
                  pgtIou = form.getfirst("pgtIou")
                  pgtId = form.getfirst("pgtId")