Date: Sat, 02 Sep 2000 20:06:06 +0200 From: sthaug@nethelp.no To: phk@critter.freebsd.dk Cc: n@nectar.com, ume@FreeBSD.ORG, arch@FreeBSD.ORG Subject: Re: Request for review: nsswitch Message-ID: <61643.967917966@verdi.nethelp.no> In-Reply-To: Your message of "Sat, 02 Sep 2000 19:02:46 %2B0200" References: <41094.967914166@critter>
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> Since we're on this topic anyway, there is one thing which has always
> bothered me: Why don't we have the option of a per user alias file
> for hostnames ?
>
> I would love to be able to say:
>
> echo "freefall freefall.freebsd.org" >> $HOME/.hostaliases
>
> and be able to say just:
>
> ssh freefall
>
> no matter how the local resolver and/or /etc/hosts file were configured...
The mechanism already exists. See libc/net/res_query.c, the hostalias()
routine:
if (_res.options & RES_NOALIASES)
return (NULL);
if (issetugid())
return (NULL);
file = getenv("HOSTALIASES");
and the environment variable needs to point to a file with lines in the
format
short-name full.name.dom.ain
As you can see, it is explicitly disabled for setuid programs. It works
for ssh as soon as you make ssh non-setuid (which I think is a good idea
in any case...)
Steinar Haug, Nethelp consulting, sthaug@nethelp.no
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