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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#ifndef ISC_IPV6_H
#define ISC_IPV6_H 1
/*****
***** Module Info
*****/
/*
* IPv6 definitions for systems which do not support IPv6.
*
* MP:
* No impact.
*
* Reliability:
* No anticipated impact.
*
* Resources:
* N/A.
*
* Security:
* No anticipated impact.
*
* Standards:
* RFC2553.
*/
#if _MSC_VER < 1300
#define in6_addr in_addr6
#endif /* if _MSC_VER < 1300 */
#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_ANY_INIT */
#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 /* ifndef IN6ADDR_LOOPBACK_INIT */
#ifndef IN6ADDR_V4MAPPED_INIT
#define IN6ADDR_V4MAPPED_INIT \
{ \
{ \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff, 0, 0, 0, 0 \
} \
}
#endif /* ifndef IN6ADDR_V4MAPPED_INIT */
LIBISC_EXTERNAL_DATA extern const struct in6_addr isc_in6addr_any;
LIBISC_EXTERNAL_DATA extern const struct in6_addr isc_in6addr_loopback;
/*
* Unspecified
*/
#ifndef IN6_IS_ADDR_UNSPECIFIED
#define IN6_IS_ADDR_UNSPECIFIED(a) \
(*((u_long *)((a)->s6_addr)) == 0 && \
*((u_long *)((a)->s6_addr) + 1) == 0 && \
*((u_long *)((a)->s6_addr) + 2) == 0 && \
*((u_long *)((a)->s6_addr) + 3) == 0)
#endif /* ifndef IN6_IS_ADDR_UNSPECIFIED */
/*
* Loopback
*/
#ifndef IN6_IS_ADDR_LOOPBACK
#define IN6_IS_ADDR_LOOPBACK(a) \
(*((u_long *)((a)->s6_addr)) == 0 && \
*((u_long *)((a)->s6_addr) + 1) == 0 && \
*((u_long *)((a)->s6_addr) + 2) == 0 && \
*((u_long *)((a)->s6_addr) + 3) == htonl(1))
#endif /* ifndef IN6_IS_ADDR_LOOPBACK */
/*
* IPv4 compatible
*/
#define IN6_IS_ADDR_V4COMPAT(a) \
(*((u_long *)((a)->s6_addr)) == 0 && \
*((u_long *)((a)->s6_addr) + 1) == 0 && \
*((u_long *)((a)->s6_addr) + 2) == 0 && \
*((u_long *)((a)->s6_addr) + 3) != 0 && \
*((u_long *)((a)->s6_addr) + 3) != htonl(1))
/*
* Mapped
*/
#define IN6_IS_ADDR_V4MAPPED(a) \
(*((u_long *)((a)->s6_addr)) == 0 && \
*((u_long *)((a)->s6_addr) + 1) == 0 && \
*((u_long *)((a)->s6_addr) + 2) == htonl(0x0000ffff))
/*
* Multicast
*/
#define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xffU)
/*
* Unicast link / site local.
*/
#ifndef IN6_IS_ADDR_LINKLOCAL
#define IN6_IS_ADDR_LINKLOCAL(a) \
(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
#endif /* ifndef IN6_IS_ADDR_LINKLOCAL */
#ifndef IN6_IS_ADDR_SITELOCAL
#define IN6_IS_ADDR_SITELOCAL(a) \
(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
#endif /* ifndef IN6_IS_ADDR_SITELOCAL */
#endif /* ISC_IPV6_H */
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