From owner-freebsd-arch@FreeBSD.ORG  Sat Mar 29 08:50:51 2003
Return-Path: <owner-freebsd-arch@FreeBSD.ORG>
Delivered-To: freebsd-arch@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 173D137B401
	for <arch@freebsd.org>; Sat, 29 Mar 2003 08:50:51 -0800 (PST)
Received: from flood.ping.uio.no (flood.ping.uio.no [129.240.78.31])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 8426143F85
	for <arch@freebsd.org>; Sat, 29 Mar 2003 08:50:50 -0800 (PST)
	(envelope-from des@ofug.org)
Received: by flood.ping.uio.no (Postfix, from userid 2602)
	id 0E8EC5308; Sat, 29 Mar 2003 17:50:48 +0100 (CET)
X-URL: http://www.ofug.org/~des/
X-Disclaimer: The views expressed in this message do not necessarily
  coincide with those of any organisation or company with
  which I am or have been affiliated.
To: arch@freebsd.org
From: des@ofug.org (Dag-Erling =?iso-8859-1?q?Sm=F8rgrav?=)
Date: Sat, 29 Mar 2003 17:50:46 +0100
Message-ID: <xzpu1dm2k2h.fsf@flood.ping.uio.no>
User-Agent: Gnus/5.090015 (Oort Gnus v0.15) Emacs/21.2
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="=-=-="
Subject: Allow underscores in DNS names
X-BeenThere: freebsd-arch@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussion related to FreeBSD architecture
	<freebsd-arch.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arch>
List-Post: <mailto:freebsd-arch@freebsd.org>
List-Help: <mailto:freebsd-arch-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 29 Mar 2003 16:50:54 -0000

--=-=-=
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable

The attached patch, inspired by a discussion on -STABLE, modifies our
resolver library to allow underscores in host names, by classifying
the underscore as a hyphen character.  Even though RFC952 forbids
them, underscores are becoming increasingly common in DNS, and they
are sometimes used for mechanisms (such as Microsoft's automatic proxy
configuration scheme) which we might want to support in FreeBSD.

DES
--=20
Dag-Erling Sm=F8rgrav - des@ofug.org


--=-=-=
Content-Type: text/x-patch
Content-Disposition: attachment; filename=hnok.diff

Index: lib/libc/net/res_comp.c
===================================================================
RCS file: /home/ncvs/src/lib/libc/net/res_comp.c,v
retrieving revision 1.17
diff -u -r1.17 res_comp.c
--- lib/libc/net/res_comp.c	22 Mar 2002 21:52:29 -0000	1.17
+++ lib/libc/net/res_comp.c	29 Mar 2003 16:42:57 -0000
@@ -142,7 +142,7 @@
  * is not careful about this, but for some reason, we're doing it right here.
  */
 #define PERIOD 0x2e
-#define	hyphenchar(c) ((c) == 0x2d)
+#define	hyphenchar(c) ((c) == 0x2d || (c) == 0x5f)
 #define bslashchar(c) ((c) == 0x5c)
 #define periodchar(c) ((c) == PERIOD)
 #define asterchar(c) ((c) == 0x2a)

--=-=-=--