[src/trunk]: src/lib/libc/net PR/50552: Kyle Amon: RFC3493 section 6.1 wants ...

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

details:   https://anonhg.NetBSD.org/src/rev/4662ca68b7fc
branches:  trunk
changeset: 342286:4662ca68b7fc
user:      christos <christos%NetBSD.org@localhost>
date:      Mon Dec 14 22:07:37 2015 +0000

description:
PR/50552: Kyle Amon: RFC3493 section 6.1 wants us to accept non-dotted-quad
INET4 addresses.
XXX: pullup-7

diffstat:

 lib/libc/net/getaddrinfo.c |  14 ++++++++++----
 1 files changed, 10 insertions(+), 4 deletions(-)

diffs (43 lines):

diff -r 5b16e308508c -r 4662ca68b7fc lib/libc/net/getaddrinfo.c
--- a/lib/libc/net/getaddrinfo.c        Mon Dec 14 22:06:57 2015 +0000
+++ b/lib/libc/net/getaddrinfo.c        Mon Dec 14 22:07:37 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: getaddrinfo.c,v 1.112 2015/12/13 02:02:59 christos Exp $       */
+/*     $NetBSD: getaddrinfo.c,v 1.113 2015/12/14 22:07:37 christos Exp $       */
 /*     $KAME: getaddrinfo.c,v 1.29 2000/08/31 17:26:57 itojun Exp $    */
 
 /*
@@ -55,7 +55,7 @@
 
 #include <sys/cdefs.h>
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: getaddrinfo.c,v 1.112 2015/12/13 02:02:59 christos Exp $");
+__RCSID("$NetBSD: getaddrinfo.c,v 1.113 2015/12/14 22:07:37 christos Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 #ifndef RUMP_ACTION
@@ -1312,8 +1312,15 @@
                return 0;
 
        switch (afd->a_af) {
-#if 0 /*X/Open spec*/
        case AF_INET:
+              /*
+               * RFC3493 section 6.1, requires getaddrinfo() to accept
+               * AF_INET formats that are accepted by inet_addr(); here
+               * we use the equivalent inet_aton() function so we can
+               * check for errors. inet_pton() only accepts addresses
+               * in the dotted quad format and only in base 10, so we
+               * need to treat AF_INET specially.
+               */
                if (inet_aton(hostname, (struct in_addr *)pton) == 1) {
                        if (pai->ai_family == afd->a_af ||
                            pai->ai_family == PF_UNSPEC /*?*/) {
@@ -1333,7 +1340,6 @@
                                ERR(EAI_FAMILY);        /*xxx*/
                }
                break;
-#endif
        default:
                if (inet_pton(afd->a_af, hostname, pton) == 1) {
                        if (pai->ai_family == afd->a_af ||