[Zope] getting all form data (ZPublisher)

Hi! How could I get access to form data in a ZPublisher module (I don't use zope, only ZopeHTTPServer and ZPublisher)? I want to make a simple module which puts all the data submitted through a form file. Example: http://127.0.0.1:9673/write?field1=heisst&field2=hier&field3=jemand&fiel d4=duentsch File output.txt: field1 heisst field2 hier field3 jemand field4 duentsch The fields name should not be hardcoded in the module. I don't want: def write(field1,field2,field3,field4): Oliver