FreeTDS Development Group

["James K. Lowden" <jklowden AT freetds.org>]

On Tue, 3 Jan 2012 09:07:31 +0100
dariusz ostolski <dariusz.ostolski AT gmail.com> wrote:

> 1. Can You confirm that I cannot set custom path to interfaces file
> using ct_config?

Yes.  The FreeTDS function supports only three properties,  CS_IFILE
not among them.  

> 2. What alternatives do I have? I don't want to modify $SYBASE
> environment variable and I wouldn't like to use any function outside
> ct library?

USTL.  There's a static constant src/tds/config.c::interfaces_path.
Add to the case statement in ct_config, diddle just a bit with the
logic around config.c:1095:

                if (!sybase || !sybase[0])
                        sybase = interfaces_path;

                ...
                found = search_interface_file(login, sybase,
                                                "interfaces", server);

to something like:

        static const char default_interfaces_path[] = "/etc/freetds"; 
                                // should be $PREFIX from configure
        /* interfaces_path can be set by ct_config CS_IFILE */
        const char *interfaces_path = default_interfaces_path;
        ...
        if (interfaces_path == default_interfaces_path) {
                if (!sybase || !sybase[0])
                        sybase = interfaces_path;
        } else {
                        sybase = interfaces_path;
        }

and call it a day.  If you post such a patch, I'll include it in the
main branch.  

That's just a hack, though.  For extra credit, the path should be in
CS_CONTEXT.  

HTH.  

--jkl