[src/trunk]: src/lib/libc/net query ip6.arpa then ip6.int for IPv6 reverse lo...

[itojun <itojun%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/4e74b4b60908
branches:  trunk
changeset: 534551:4e74b4b60908
user:      itojun <itojun%NetBSD.org@localhost>
date:      Mon Jul 29 10:01:58 2002 +0000

description:
query ip6.arpa then ip6.int for IPv6 reverse lookup.  follows RFC3152.

diffstat:

 lib/libc/net/gethnamaddr.c |  12 +++++++++---
 1 files changed, 9 insertions(+), 3 deletions(-)

diffs (39 lines):

diff -r 6b859b4b3f1f -r 4e74b4b60908 lib/libc/net/gethnamaddr.c
--- a/lib/libc/net/gethnamaddr.c        Mon Jul 29 09:14:36 2002 +0000
+++ b/lib/libc/net/gethnamaddr.c        Mon Jul 29 10:01:58 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: gethnamaddr.c,v 1.47 2002/06/26 09:39:48 itojun Exp $  */
+/*     $NetBSD: gethnamaddr.c,v 1.48 2002/07/29 10:01:58 itojun Exp $  */
 
 /*
  * ++Copyright++ 1985, 1988, 1993
@@ -61,7 +61,7 @@
 static char sccsid[] = "@(#)gethostnamadr.c    8.1 (Berkeley) 6/4/93";
 static char rcsid[] = "Id: gethnamaddr.c,v 8.21 1997/06/01 20:34:37 vixie Exp ";
 #else
-__RCSID("$NetBSD: gethnamaddr.c,v 1.47 2002/06/26 09:39:48 itojun Exp $");
+__RCSID("$NetBSD: gethnamaddr.c,v 1.48 2002/07/29 10:01:58 itojun Exp $");
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -1195,13 +1195,19 @@
                        else
                                return NS_NOTFOUND;
                }
-               strlcat(qbuf, "ip6.int", sizeof(qbuf));
+               strlcat(qbuf, "ip6.arpa", sizeof(qbuf));
                break;
        default:
                abort();
        }
 
        n = res_query(qbuf, C_IN, T_PTR, (u_char *)(void *)&buf, sizeof(buf));
+       if (n < 0 && af == AF_INET6) {
+               *qp = '\0';
+               strlcat(qbuf, "ip6.int", sizeof(qbuf));
+               n = res_query(qbuf, C_IN, T_PTR, (u_char *)(void *)&buf,
+                   sizeof(buf));
+       }
        if (n < 0) {
                dprintf("res_query failed (%d)\n", n);
                return NS_NOTFOUND;