[wpkg-users] False match of IP address to host name pattern

[Pendl Stefan]

>
> Hi Stefan,
>
> Pendl Stefan wrote:
> >     I had the following wrong match:
> >
> > 2009-09-29 16:21:38, DEBUG   : Found network service:
> {3FA06DD1-FB69-4CE5-B782-A7692479FBDD}
> > 2009-09-29 16:21:38, DEBUG   : Reading DHCP address.
> > 2009-09-29 16:21:38, DEBUG   : Found DHCP address: 129.0.40.227
> > 2009-09-29 16:21:38, DEBUG   : Found profile
> 'GL[01].\|PRM0.\|INO[01].' matching IP '129.0.40.227'
> > 2009-09-29 16:21:38, DEBUG   : Profiles applying to the
> current host:|DesktopPC|
> > This resulted in removing software from several hosts with
> different IP addresses too.
> >
> > I do not use IP matching, so I do not understand, what the
> cause of the problem is.
> > I do have several other host patterns with the pipe for
> multiple different host names.
> >
> > Running WPKG 1.1.2
> >
> > Thanks for any insight.
>
> It looks like you hit a very rare case of overmatching. Your
> host definition
> "GL[01].\|PRM0.\|INO[01]." contains exactly 3 period
> characters ("."). WPKG
> first tries a 1:1 match to the hostname (which obviously
> fails with your
> regexp). Then it tries IP matching. Obviously your regexp can
> be splitted into 4
> parts which makes it look like it qualifies for IP matching:
>
> GL[01] . \|PRM0 . \|INO[01] .
>
> So it tries IP-matching. Unfortunately JScript does not throw
> an error when
> trying to parse "GL[01]" as an integer. So finally it thinks
> that your IP is in
> range.
>
> The work-around for WPKG 1.1.2 is easy. Just add another "."
> and WPKG will not
> think any more it could be an IP.
>
> So you might change
> "GL[01].\|PRM0.\|INO[01]."
> to
> "GL[01].\|PRM0.\|INO[01].|dummy."
>
>
> Meanwhile I've checked in a change which is supposed to
> detect non-numeric
> values and then the IP match fails (as expected in this case).
> Get it from here (version 1.1.3-RC1) if you like to test it:
>
>
> br,
> Rainer
>

Hi Rainer,
        I will surly test the new version, but I will wait till Friday, so I can make sure to not break anything once more.
I think I have to reinstall three of our CAD workstations :-P

BTW, the change.log and changes file say, there was an error for matching four dots in a pattern, but it actually are only three dots.
Four numbers separated by three dots: n.n.n.n ;-)

---
Stefan