Bernie Innocenti | d1cc724 | 2018-09-11 18:41:37 +0900 | [diff] [blame] | 1 | /* $NetBSD: hostent.h,v 1.2 2013/08/27 09:56:12 christos Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2013 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Christos Zoulas. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
Bernie Innocenti | ac18b12 | 2018-10-01 23:10:18 +0900 | [diff] [blame] | 31 | #ifndef NETD_RESOLV_HOSTENT_H |
| 32 | #define NETD_RESOLV_HOSTENT_H |
Bernie Innocenti | d1cc724 | 2018-09-11 18:41:37 +0900 | [diff] [blame] | 33 | |
Bernie Innocenti | d1cc724 | 2018-09-11 18:41:37 +0900 | [diff] [blame] | 34 | #include <netdb.h> |
Bernie Innocenti | d1cc724 | 2018-09-11 18:41:37 +0900 | [diff] [blame] | 35 | |
Bernie Innocenti | d1cc724 | 2018-09-11 18:41:37 +0900 | [diff] [blame] | 36 | struct getnamaddr { |
Bernie Innocenti | eb0c81a | 2018-09-11 18:55:58 +0900 | [diff] [blame] | 37 | struct hostent* hp; |
| 38 | char* buf; |
| 39 | size_t buflen; |
Bernie Innocenti | d1cc724 | 2018-09-11 18:41:37 +0900 | [diff] [blame] | 40 | }; |
| 41 | |
Bernie Innocenti | 9f61dbd | 2018-09-12 20:03:11 +0900 | [diff] [blame] | 42 | // /etc/hosts lookup |
Hungming Chen | 6c84a3d | 2018-12-26 16:14:17 +0800 | [diff] [blame] | 43 | int _hf_gethtbyaddr(const unsigned char* uaddr, int len, int af, getnamaddr* info); |
| 44 | int _hf_gethtbyname2(const char* name, int af, getnamaddr* info); |
Bernie Innocenti | 9f61dbd | 2018-09-12 20:03:11 +0900 | [diff] [blame] | 45 | hostent* netbsd_gethostent_r(FILE*, struct hostent*, char*, size_t, int*); |
Bernie Innocenti | d1cc724 | 2018-09-11 18:41:37 +0900 | [diff] [blame] | 46 | |
nuccachen | c28257d | 2018-09-11 11:20:00 +0800 | [diff] [blame] | 47 | // Reserved padding for remapping IPv4 address to NAT64 synthesis IPv6 address |
| 48 | static const char NAT64_PAD[NS_IN6ADDRSZ - NS_INADDRSZ] = {}; |
| 49 | |
Bernie Innocenti | 9c57593 | 2018-09-07 21:10:25 +0900 | [diff] [blame] | 50 | #define HENT_ARRAY(dst, anum, ptr, len) do { \ |
Bernie Innocenti | eb0c81a | 2018-09-11 18:55:58 +0900 | [diff] [blame] | 51 | size_t _len = (anum + 1) * sizeof(*dst); \ |
| 52 | if (_len > len) goto nospc; \ |
Bernie Innocenti | 9c57593 | 2018-09-07 21:10:25 +0900 | [diff] [blame] | 53 | dst = (char**) ptr; \ |
Bernie Innocenti | eb0c81a | 2018-09-11 18:55:58 +0900 | [diff] [blame] | 54 | ptr += _len; \ |
| 55 | len -= _len; \ |
Bernie Innocenti | 9c57593 | 2018-09-07 21:10:25 +0900 | [diff] [blame] | 56 | } while (0) |
Bernie Innocenti | d1cc724 | 2018-09-11 18:41:37 +0900 | [diff] [blame] | 57 | |
Bernie Innocenti | 9c57593 | 2018-09-07 21:10:25 +0900 | [diff] [blame] | 58 | #define HENT_COPY(dst, src, slen, ptr, len) do { \ |
| 59 | if ((size_t) slen > len) goto nospc; \ |
| 60 | memcpy(ptr, src, (size_t) slen); \ |
| 61 | dst = ptr; \ |
| 62 | ptr += slen; \ |
| 63 | len -= slen; \ |
| 64 | } while (0) |
Bernie Innocenti | d1cc724 | 2018-09-11 18:41:37 +0900 | [diff] [blame] | 65 | |
Bernie Innocenti | 9c57593 | 2018-09-07 21:10:25 +0900 | [diff] [blame] | 66 | #define HENT_SCOPY(dst, src, ptr, len) do { \ |
Bernie Innocenti | eb0c81a | 2018-09-11 18:55:58 +0900 | [diff] [blame] | 67 | size_t _len = strlen(src) + 1; \ |
| 68 | HENT_COPY(dst, src, _len, ptr, len); \ |
Bernie Innocenti | 9c57593 | 2018-09-07 21:10:25 +0900 | [diff] [blame] | 69 | } while (0) |
Bernie Innocenti | d1cc724 | 2018-09-11 18:41:37 +0900 | [diff] [blame] | 70 | |
Bernie Innocenti | ac18b12 | 2018-10-01 23:10:18 +0900 | [diff] [blame] | 71 | #endif // NETD_RESOLV_HOSTENT_H |