147 lines
3.3 KiB
C
147 lines
3.3 KiB
C
/*
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* special addresses
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* Copyright (C) 2000 Henry Spencer.
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*
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Library General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/lgpl.txt>.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
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* License for more details.
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*
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* RCSID $Id: anyaddr.c,v 1.1 2004/03/15 20:35:25 as Exp $
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*/
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#include "internal.h"
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#include "freeswan.h"
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/* these are mostly fallbacks for the no-IPv6-support-in-library case */
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#ifndef IN6ADDR_ANY_INIT
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#define IN6ADDR_ANY_INIT {{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }}
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#endif
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#ifndef IN6ADDR_LOOPBACK_INIT
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#define IN6ADDR_LOOPBACK_INIT {{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }}
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#endif
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static struct in6_addr v6any = IN6ADDR_ANY_INIT;
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static struct in6_addr v6loop = IN6ADDR_LOOPBACK_INIT;
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/*
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- anyaddr - initialize to the any-address value
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*/
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err_t /* NULL for success, else string literal */
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anyaddr(af, dst)
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int af; /* address family */
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ip_address *dst;
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{
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uint32_t v4any = htonl(INADDR_ANY);
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switch (af) {
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case AF_INET:
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return initaddr((unsigned char *)&v4any, sizeof(v4any), af, dst);
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break;
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case AF_INET6:
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return initaddr((unsigned char *)&v6any, sizeof(v6any), af, dst);
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break;
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default:
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return "unknown address family in anyaddr/unspecaddr";
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break;
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}
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}
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/*
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- unspecaddr - initialize to the unspecified-address value
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*/
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err_t /* NULL for success, else string literal */
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unspecaddr(af, dst)
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int af; /* address family */
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ip_address *dst;
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{
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return anyaddr(af, dst);
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}
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/*
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- loopbackaddr - initialize to the loopback-address value
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*/
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err_t /* NULL for success, else string literal */
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loopbackaddr(af, dst)
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int af; /* address family */
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ip_address *dst;
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{
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uint32_t v4loop = htonl(INADDR_LOOPBACK);
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switch (af) {
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case AF_INET:
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return initaddr((unsigned char *)&v4loop, sizeof(v4loop), af, dst);
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break;
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case AF_INET6:
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return initaddr((unsigned char *)&v6loop, sizeof(v6loop), af, dst);
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break;
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default:
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return "unknown address family in loopbackaddr";
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break;
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}
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}
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/*
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- isanyaddr - test for the any-address value
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*/
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int
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isanyaddr(src)
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const ip_address *src;
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{
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uint32_t v4any = htonl(INADDR_ANY);
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int cmp;
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switch (src->u.v4.sin_family) {
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case AF_INET:
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cmp = memcmp(&src->u.v4.sin_addr.s_addr, &v4any, sizeof(v4any));
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break;
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case AF_INET6:
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cmp = memcmp(&src->u.v6.sin6_addr, &v6any, sizeof(v6any));
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break;
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default:
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return 0;
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break;
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}
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return (cmp == 0) ? 1 : 0;
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}
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/*
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- isunspecaddr - test for the unspecified-address value
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*/
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int
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isunspecaddr(src)
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const ip_address *src;
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{
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return isanyaddr(src);
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}
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/*
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- isloopbackaddr - test for the loopback-address value
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*/
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int
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isloopbackaddr(src)
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const ip_address *src;
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{
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uint32_t v4loop = htonl(INADDR_LOOPBACK);
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int cmp;
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switch (src->u.v4.sin_family) {
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case AF_INET:
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cmp = memcmp(&src->u.v4.sin_addr.s_addr, &v4loop, sizeof(v4loop));
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break;
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case AF_INET6:
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cmp = memcmp(&src->u.v6.sin6_addr, &v6loop, sizeof(v6loop));
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break;
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default:
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return 0;
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break;
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}
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return (cmp == 0) ? 1 : 0;
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}
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