00b67f09dd
Also known as ISC bind. This import adds utilities such as host(1), dig(1), and nslookup(1), as well as many other tools and libraries. Change-Id: I035ca46e64f1965d57019e773f4ff0ef035e4aa3
228 lines
5.7 KiB
C
228 lines
5.7 KiB
C
/* $NetBSD: util.h,v 1.6 2014/12/10 04:38:01 christos Exp $ */
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/*
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* Portions Copyright (C) 2004-2007, 2014 Internet Systems Consortium, Inc. ("ISC")
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* Portions Copyright (C) 2001 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NOMINUM DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Portions Copyright (C) 2001 Nominum, Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NOMINUM DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* Id: util.h,v 1.11 2007/08/28 07:20:43 tbox Exp */
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#ifndef ISCCC_UTIL_H
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#define ISCCC_UTIL_H 1
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#include <isc/util.h>
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/*! \file isccc/util.h
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* \brief
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* Macros for dealing with unaligned numbers.
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*
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* \note no side effects are allowed when invoking these macros!
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*/
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#define GET8(v, w) \
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do { \
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v = *w; \
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w++; \
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} while (/*CONSTCOND*/0)
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#define GET16(v, w) \
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do { \
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v = (unsigned int)w[0] << 8; \
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v |= (unsigned int)w[1]; \
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w += 2; \
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} while (/*CONSTCOND*/0)
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#define GET24(v, w) \
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do { \
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v = (unsigned int)w[0] << 16; \
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v |= (unsigned int)w[1] << 8; \
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v |= (unsigned int)w[2]; \
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w += 3; \
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} while (/*CONSTCOND*/0)
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#define GET32(v, w) \
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do { \
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v = (unsigned int)w[0] << 24; \
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v |= (unsigned int)w[1] << 16; \
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v |= (unsigned int)w[2] << 8; \
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v |= (unsigned int)w[3]; \
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w += 4; \
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} while (/*CONSTCOND*/0)
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#define GET64(v, w) \
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do { \
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v = (isc_uint64_t)w[0] << 56; \
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v |= (isc_uint64_t)w[1] << 48; \
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v |= (isc_uint64_t)w[2] << 40; \
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v |= (isc_uint64_t)w[3] << 32; \
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v |= (isc_uint64_t)w[4] << 24; \
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v |= (isc_uint64_t)w[5] << 16; \
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v |= (isc_uint64_t)w[6] << 8; \
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v |= (isc_uint64_t)w[7]; \
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w += 8; \
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} while (/*CONSTCOND*/0)
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#define GETC16(v, w, d) \
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do { \
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GET8(v, w); \
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if (v == 0) \
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d = ISCCC_TRUE; \
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else { \
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d = ISCCC_FALSE; \
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if (v == 255) \
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GET16(v, w); \
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} \
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} while (/*CONSTCOND*/0)
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#define GETC32(v, w) \
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do { \
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GET24(v, w); \
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if (v == 0xffffffu) \
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GET32(v, w); \
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} while (/*CONSTCOND*/0)
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#define GET_OFFSET(v, w) GET32(v, w)
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#define GET_MEM(v, c, w) \
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do { \
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memmove(v, w, c); \
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w += c; \
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} while (/*CONSTCOND*/0)
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#define GET_TYPE(v, w) \
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do { \
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GET8(v, w); \
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if (v > 127) { \
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if (v < 255) \
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v = ((v & 0x7f) << 16) | ISCCC_RDATATYPE_SIG; \
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else \
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GET32(v, w); \
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} \
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} while (/*CONSTCOND*/0)
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#define PUT8(v, w) \
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do { \
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*w = (v & 0x000000ffU); \
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w++; \
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} while (/*CONSTCOND*/0)
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#define PUT16(v, w) \
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do { \
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w[0] = (v & 0x0000ff00U) >> 8; \
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w[1] = (v & 0x000000ffU); \
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w += 2; \
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} while (/*CONSTCOND*/0)
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#define PUT24(v, w) \
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do { \
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w[0] = (v & 0x00ff0000U) >> 16; \
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w[1] = (v & 0x0000ff00U) >> 8; \
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w[2] = (v & 0x000000ffU); \
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w += 3; \
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} while (/*CONSTCOND*/0)
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#define PUT32(v, w) \
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do { \
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w[0] = (v & 0xff000000U) >> 24; \
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w[1] = (v & 0x00ff0000U) >> 16; \
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w[2] = (v & 0x0000ff00U) >> 8; \
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w[3] = (v & 0x000000ffU); \
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w += 4; \
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} while (/*CONSTCOND*/0)
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#define PUT64(v, w) \
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do { \
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w[0] = (v & 0xff00000000000000ULL) >> 56; \
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w[1] = (v & 0x00ff000000000000ULL) >> 48; \
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w[2] = (v & 0x0000ff0000000000ULL) >> 40; \
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w[3] = (v & 0x000000ff00000000ULL) >> 32; \
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w[4] = (v & 0x00000000ff000000ULL) >> 24; \
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w[5] = (v & 0x0000000000ff0000ULL) >> 16; \
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w[6] = (v & 0x000000000000ff00ULL) >> 8; \
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w[7] = (v & 0x00000000000000ffULL); \
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w += 8; \
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} while (/*CONSTCOND*/0)
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#define PUTC16(v, w) \
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do { \
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if (v > 0 && v < 255) \
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PUT8(v, w); \
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else { \
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PUT8(255, w); \
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PUT16(v, w); \
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} \
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} while (/*CONSTCOND*/0)
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#define PUTC32(v, w) \
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do { \
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if (v < 0xffffffU) \
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PUT24(v, w); \
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else { \
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PUT24(0xffffffU, w); \
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PUT32(v, w); \
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} \
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} while (/*CONSTCOND*/0)
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#define PUT_OFFSET(v, w) PUT32(v, w)
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#include <string.h>
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#define PUT_MEM(s, c, w) \
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do { \
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memmove(w, s, c); \
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w += c; \
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} while (/*CONSTCOND*/0)
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/*
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* Regions.
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*/
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#define REGION_SIZE(r) ((unsigned int)((r).rend - (r).rstart))
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#define REGION_EMPTY(r) ((r).rstart == (r).rend)
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#define REGION_FROMSTRING(r, s) do { \
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(r).rstart = (unsigned char *)s; \
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(r).rend = (r).rstart + strlen(s); \
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} while (/*CONSTCOND*/0)
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/*%
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* Use this to remove the const qualifier of a variable to assign it to
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* a non-const variable or pass it as a non-const function argument ...
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* but only when you are sure it won't then be changed!
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* This is necessary to sometimes shut up some compilers
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* (as with gcc -Wcast-qual) when there is just no other good way to avoid the
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* situation.
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*/
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#define DE_CONST(konst, var) \
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do { \
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union { const void *k; void *v; } _u; \
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_u.k = konst; \
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var = _u.v; \
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} while (/*CONSTCOND*/0)
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#endif /* ISCCC_UTIL_H */
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