Evan Hunt
8eb88aafee
4708. [cleanup] Legacy Windows builds (i.e. for XP and earlier)
are no longer supported. [RT #45186]
4707. [func] The lightweight resolver daemon and library (lwresd
and liblwres) have been removed. [RT #45186]
4706. [func] Code implementing name server query processing has
been moved from bin/named to a new library "libns".
Functions remaining in bin/named are now prefixed
with "named_" rather than "ns_". This will make it
easier to write unit tests for name server code, or
link name server functionality into new tools.
[RT #45186]
132 lines
2.7 KiB
C
132 lines
2.7 KiB
C
/*
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* Copyright (C) 1999-2002, 2004, 2005, 2007, 2016, 2017 Internet Systems Consortium, Inc. ("ISC")
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#ifndef ISC_IPV6_H
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#define ISC_IPV6_H 1
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/*****
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***** Module Info
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*****/
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/*! \file isc/ipv6.h
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* \brief IPv6 definitions for systems which do not support IPv6.
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*
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* \li MP:
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* No impact.
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*
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* \li Reliability:
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* No anticipated impact.
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*
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* \li Resources:
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* N/A.
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*
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* \li Security:
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* No anticipated impact.
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*
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* \li Standards:
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* RFC2553.
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*/
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/***
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*** Imports.
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***/
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#include <isc/int.h>
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#include <isc/platform.h>
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/***
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*** Types.
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***/
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struct in6_addr {
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union {
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isc_uint8_t _S6_u8[16];
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isc_uint16_t _S6_u16[8];
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isc_uint32_t _S6_u32[4];
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} _S6_un;
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};
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#define s6_addr _S6_un._S6_u8
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#define s6_addr8 _S6_un._S6_u8
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#define s6_addr16 _S6_un._S6_u16
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#define s6_addr32 _S6_un._S6_u32
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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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#define IN6ADDR_LOOPBACK_INIT {{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }}}
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LIBISC_EXTERNAL_DATA extern const struct in6_addr in6addr_any;
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LIBISC_EXTERNAL_DATA extern const struct in6_addr in6addr_loopback;
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struct sockaddr_in6 {
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#ifdef ISC_PLATFORM_HAVESALEN
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isc_uint8_t sin6_len;
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isc_uint8_t sin6_family;
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#else
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isc_uint16_t sin6_family;
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#endif
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isc_uint16_t sin6_port;
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isc_uint32_t sin6_flowinfo;
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struct in6_addr sin6_addr;
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isc_uint32_t sin6_scope_id;
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};
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#ifdef ISC_PLATFORM_HAVESALEN
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#define SIN6_LEN 1
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#endif
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/*%
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* Unspecified
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*/
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#define IN6_IS_ADDR_UNSPECIFIED(a) \
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(((a)->s6_addr32[0] == 0) && \
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((a)->s6_addr32[1] == 0) && \
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((a)->s6_addr32[2] == 0) && \
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((a)->s6_addr32[3] == 0))
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/*%
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* Loopback
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*/
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#define IN6_IS_ADDR_LOOPBACK(a) \
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(((a)->s6_addr32[0] == 0) && \
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((a)->s6_addr32[1] == 0) && \
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((a)->s6_addr32[2] == 0) && \
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((a)->s6_addr32[3] == htonl(1)))
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/*%
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* IPv4 compatible
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*/
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#define IN6_IS_ADDR_V4COMPAT(a) \
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(((a)->s6_addr32[0] == 0) && \
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((a)->s6_addr32[1] == 0) && \
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((a)->s6_addr32[2] == 0) && \
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((a)->s6_addr32[3] != 0) && \
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((a)->s6_addr32[3] != htonl(1)))
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/*%
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* Mapped
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*/
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#define IN6_IS_ADDR_V4MAPPED(a) \
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(((a)->s6_addr32[0] == 0) && \
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((a)->s6_addr32[1] == 0) && \
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((a)->s6_addr32[2] == htonl(0x0000ffff)))
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/*%
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* Multicast
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*/
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#define IN6_IS_ADDR_MULTICAST(a) \
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((a)->s6_addr8[0] == 0xffU)
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/*%
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* Unicast link / site local.
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*/
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#define IN6_IS_ADDR_LINKLOCAL(a) \
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(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
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#define IN6_IS_ADDR_SITELOCAL(a) \
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(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
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#endif /* ISC_IPV6_H */
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