hostent.h revision 1.2.12.2
1 1.2.12.2 tls /* $NetBSD: hostent.h,v 1.2.12.2 2014/08/20 00:02:15 tls Exp $ */ 2 1.2.12.2 tls 3 1.2.12.2 tls /*- 4 1.2.12.2 tls * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 1.2.12.2 tls * All rights reserved. 6 1.2.12.2 tls * 7 1.2.12.2 tls * This code is derived from software contributed to The NetBSD Foundation 8 1.2.12.2 tls * by Christos Zoulas. 9 1.2.12.2 tls * 10 1.2.12.2 tls * Redistribution and use in source and binary forms, with or without 11 1.2.12.2 tls * modification, are permitted provided that the following conditions 12 1.2.12.2 tls * are met: 13 1.2.12.2 tls * 1. Redistributions of source code must retain the above copyright 14 1.2.12.2 tls * notice, this list of conditions and the following disclaimer. 15 1.2.12.2 tls * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.12.2 tls * notice, this list of conditions and the following disclaimer in the 17 1.2.12.2 tls * documentation and/or other materials provided with the distribution. 18 1.2.12.2 tls * 19 1.2.12.2 tls * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.2.12.2 tls * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.2.12.2 tls * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.2.12.2 tls * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.2.12.2 tls * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.2.12.2 tls * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.2.12.2 tls * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.2.12.2 tls * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.2.12.2 tls * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.2.12.2 tls * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.2.12.2 tls * POSSIBILITY OF SUCH DAMAGE. 30 1.2.12.2 tls */ 31 1.2.12.2 tls 32 1.2.12.2 tls #include <stdio.h> 33 1.2.12.2 tls #include <netdb.h> 34 1.2.12.2 tls #include <stdarg.h> 35 1.2.12.2 tls 36 1.2.12.2 tls /* 37 1.2.12.2 tls * These are not being advertised because the interfaces are non-standard. 38 1.2.12.2 tls * There are versions by linux, aix, qnx, sun, etc. Our versions are used 39 1.2.12.2 tls * internally to provide thread safety; they mostly resemble qnx. 40 1.2.12.2 tls */ 41 1.2.12.2 tls void sethostent_r(FILE **); 42 1.2.12.2 tls struct hostent *gethostent_r(FILE *, struct hostent *, char *, size_t, int *); 43 1.2.12.2 tls void endhostent_r(FILE **); 44 1.2.12.2 tls 45 1.2.12.2 tls struct hostent *gethostbyname_r(const char *, struct hostent *, char *, size_t, 46 1.2.12.2 tls int *); 47 1.2.12.2 tls struct hostent *gethostbyname2_r(const char *, int, struct hostent *, char *, 48 1.2.12.2 tls size_t, int *); 49 1.2.12.2 tls struct hostent *gethostbyaddr_r(const void *, socklen_t, int, struct hostent *, 50 1.2.12.2 tls char *, size_t, int *); 51 1.2.12.2 tls 52 1.2.12.2 tls extern FILE *_h_file; 53 1.2.12.2 tls 54 1.2.12.2 tls /* 55 1.2.12.2 tls * The following are internal API's and are used only for testing. 56 1.2.12.2 tls */ 57 1.2.12.2 tls struct getnamaddr { 58 1.2.12.2 tls struct hostent *hp; 59 1.2.12.2 tls char *buf; 60 1.2.12.2 tls size_t buflen; 61 1.2.12.2 tls int *he; 62 1.2.12.2 tls }; 63 1.2.12.2 tls 64 1.2.12.2 tls /* /etc/hosts lookup */ 65 1.2.12.2 tls void _hf_sethostsfile(const char *); 66 1.2.12.2 tls int _hf_gethtbyaddr(void *, void *, va_list); 67 1.2.12.2 tls int _hf_gethtbyname(void *, void *, va_list); 68 1.2.12.2 tls 69 1.2.12.2 tls /* DNS lookup */ 70 1.2.12.2 tls int _dns_gethtbyaddr(void *, void *, va_list); 71 1.2.12.2 tls int _dns_gethtbyname(void *, void *, va_list); 72 1.2.12.2 tls 73 1.2.12.2 tls #ifdef YP 74 1.2.12.2 tls /* NIS lookup */ 75 1.2.12.2 tls int _yp_gethtbyaddr(void *, void *, va_list); 76 1.2.12.2 tls int _yp_gethtbyname(void *, void *, va_list); 77 1.2.12.2 tls #endif 78 1.2.12.2 tls 79 1.2.12.2 tls #define HENT_ARRAY(dst, anum, ptr, len) \ 80 1.2.12.2 tls do { \ 81 1.2.12.2 tls size_t _len = (anum + 1) * sizeof(*dst); \ 82 1.2.12.2 tls if (_len > len) \ 83 1.2.12.2 tls goto nospc; \ 84 1.2.12.2 tls dst = (void *)ptr; \ 85 1.2.12.2 tls ptr += _len; \ 86 1.2.12.2 tls len -= _len; \ 87 1.2.12.2 tls } while (/*CONSTCOND*/0) 88 1.2.12.2 tls 89 1.2.12.2 tls #define HENT_COPY(dst, src, slen, ptr, len) \ 90 1.2.12.2 tls do { \ 91 1.2.12.2 tls if ((size_t)slen > len) \ 92 1.2.12.2 tls goto nospc; \ 93 1.2.12.2 tls memcpy(ptr, src, (size_t)slen); \ 94 1.2.12.2 tls dst = ptr; \ 95 1.2.12.2 tls ptr += slen; \ 96 1.2.12.2 tls len -= slen; \ 97 1.2.12.2 tls } while (/* CONSTCOND */0) 98 1.2.12.2 tls 99 1.2.12.2 tls #define HENT_SCOPY(dst, src, ptr, len) \ 100 1.2.12.2 tls do { \ 101 1.2.12.2 tls size_t _len = strlen(src) + 1; \ 102 1.2.12.2 tls HENT_COPY(dst, src, _len, ptr, len); \ 103 1.2.12.2 tls } while (/* CONSTCOND */0) 104 1.2.12.2 tls 105 1.2.12.2 tls #define MAXALIASES 35 106 1.2.12.2 tls #define MAXADDRS 35 107
Indexes created Fri Oct 03 02:09:57 GMT 2025