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/* $NetBSD: hostent.h,v 1.2 2013/08/27 09:56:12 christos Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef NETD_RESOLV_HOSTENT_H
#define NETD_RESOLV_HOSTENT_H
#include <netdb.h>
struct getnamaddr {
struct hostent* hp;
char* buf;
size_t buflen;
};
// /etc/hosts lookup
int _hf_gethtbyaddr(const unsigned char* uaddr, int len, int af, getnamaddr* info);
int _hf_gethtbyname2(const char* name, int af, getnamaddr* info);
hostent* netbsd_gethostent_r(FILE*, struct hostent*, char*, size_t, int*);
// Reserved padding for remapping IPv4 address to NAT64 synthesis IPv6 address
static const char NAT64_PAD[NS_IN6ADDRSZ - NS_INADDRSZ] = {};
#define HENT_ARRAY(dst, anum, ptr, len) do { \
size_t _len = (anum + 1) * sizeof(*dst); \
if (_len > len) goto nospc; \
dst = (char**) ptr; \
ptr += _len; \
len -= _len; \
} while (0)
#define HENT_COPY(dst, src, slen, ptr, len) do { \
if ((size_t) slen > len) goto nospc; \
memcpy(ptr, src, (size_t) slen); \
dst = ptr; \
ptr += slen; \
len -= slen; \
} while (0)
#define HENT_SCOPY(dst, src, ptr, len) do { \
const size_t _len = strlen(src) + 1; \
HENT_COPY(dst, src, _len, ptr, len); \
} while (0)
#endif // NETD_RESOLV_HOSTENT_H
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