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/*
* special addresses
* Copyright (C) 2000 Henry Spencer.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Library General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/lgpl.txt>.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
* License for more details.
*
* RCSID $Id: anyaddr.c 3265 2007-10-08 19:52:55Z andreas $
*/
#include "internal.h"
#include "freeswan.h"
/* these are mostly fallbacks for the no-IPv6-support-in-library case */
#ifndef IN6ADDR_ANY_INIT
#define IN6ADDR_ANY_INIT {{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }}
#endif
#ifndef IN6ADDR_LOOPBACK_INIT
#define IN6ADDR_LOOPBACK_INIT {{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }}
#endif
static struct in6_addr v6any = IN6ADDR_ANY_INIT;
static struct in6_addr v6loop = IN6ADDR_LOOPBACK_INIT;
/*
- anyaddr - initialize to the any-address value
*/
err_t /* NULL for success, else string literal */
anyaddr(af, dst)
int af; /* address family */
ip_address *dst;
{
uint32_t v4any = htonl(INADDR_ANY);
switch (af) {
case AF_INET:
return initaddr((unsigned char *)&v4any, sizeof(v4any), af, dst);
break;
case AF_INET6:
return initaddr((unsigned char *)&v6any, sizeof(v6any), af, dst);
break;
default:
return "unknown address family in anyaddr/unspecaddr";
break;
}
}
/*
- unspecaddr - initialize to the unspecified-address value
*/
err_t /* NULL for success, else string literal */
unspecaddr(af, dst)
int af; /* address family */
ip_address *dst;
{
return anyaddr(af, dst);
}
/*
- loopbackaddr - initialize to the loopback-address value
*/
err_t /* NULL for success, else string literal */
loopbackaddr(af, dst)
int af; /* address family */
ip_address *dst;
{
uint32_t v4loop = htonl(INADDR_LOOPBACK);
switch (af) {
case AF_INET:
return initaddr((unsigned char *)&v4loop, sizeof(v4loop), af, dst);
break;
case AF_INET6:
return initaddr((unsigned char *)&v6loop, sizeof(v6loop), af, dst);
break;
default:
return "unknown address family in loopbackaddr";
break;
}
}
/*
- isanyaddr - test for the any-address value
*/
int
isanyaddr(src)
const ip_address *src;
{
uint32_t v4any = htonl(INADDR_ANY);
int cmp;
switch (src->u.v4.sin_family) {
case AF_INET:
cmp = memcmp(&src->u.v4.sin_addr.s_addr, &v4any, sizeof(v4any));
break;
case AF_INET6:
cmp = memcmp(&src->u.v6.sin6_addr, &v6any, sizeof(v6any));
break;
default:
return 0;
break;
}
return (cmp == 0) ? 1 : 0;
}
/*
- isunspecaddr - test for the unspecified-address value
*/
int
isunspecaddr(src)
const ip_address *src;
{
return isanyaddr(src);
}
/*
- isloopbackaddr - test for the loopback-address value
*/
int
isloopbackaddr(src)
const ip_address *src;
{
uint32_t v4loop = htonl(INADDR_LOOPBACK);
int cmp;
switch (src->u.v4.sin_family) {
case AF_INET:
cmp = memcmp(&src->u.v4.sin_addr.s_addr, &v4loop, sizeof(v4loop));
break;
case AF_INET6:
cmp = memcmp(&src->u.v6.sin6_addr, &v6loop, sizeof(v6loop));
break;
default:
return 0;
break;
}
return (cmp == 0) ? 1 : 0;
}
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