def authGSSServerInit(service):
    """
    Initializes a context for GSSAPI server-side authentication with the given
    service principal.
    authGSSServerClean must be called after this function returns an OK result
    to dispose of the context once all GSSAPI operations are complete.

    @param service: A string containing the service principal in the form
        C{"type@fqdn"}. To initialize the context for the purpose of accepting
        delegated credentials, pass the literal string C{"DELEGATE"}.

    @return: A tuple of (result, context) where result is the result code (see
        above) and context is an opaque value that will need to be passed to
        subsequent functions.
    """
