Experimental Physics and
Industrial Control System

"Hoff, Lawrence" <[email protected]> · Mon, 26 Jan 2004 15:03:45 -0500


	Looking at the YACC code for parsing access control files, I see
that "name lists" consist of comma separated "names":
uag_user_list:	uag_user_list ',' uag_user_list_name
	|	uag_user_list_name
	;
uag_user_list_name: tokenNAME
	Looking at the LEX code, I see that names consist of the
following characters:
name [a-zA-Z0-9_\-:\.\[\]<>;]+


	That works fine for the user name I was assigned on my LINUX
box, but it does not work well for the user name I was assigned on
my Windows box, which has an embedded space (' ').
	The expedient solution is to change the space to another
semi-invisible character on my Windows box. However, I was wondering
whether others have run into this, and/or perceive this as an issue
worth trying to address, or whether there are additional problem
associated with supporting a space character in access control.
-- Larry
P.S. I *suspect* that there are no issues with supporting embedded
spaces in user names (other than readability issues), since the user
name string is treated as a string once it has been read in, and that
it is no less readable than other strings with embedded spaces, such
as scan rates of "1 second".

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System