1*75e1de3cSAugustin Cavalier /* $NetBSD: hostent.h,v 1.2 2013/08/27 09:56:12 christos Exp $ */ 2*75e1de3cSAugustin Cavalier 3*75e1de3cSAugustin Cavalier /*- 4*75e1de3cSAugustin Cavalier * Copyright (c) 2013 The NetBSD Foundation, Inc. 5*75e1de3cSAugustin Cavalier * All rights reserved. 6*75e1de3cSAugustin Cavalier * 7*75e1de3cSAugustin Cavalier * This code is derived from software contributed to The NetBSD Foundation 8*75e1de3cSAugustin Cavalier * by Christos Zoulas. 9*75e1de3cSAugustin Cavalier * 10*75e1de3cSAugustin Cavalier * Redistribution and use in source and binary forms, with or without 11*75e1de3cSAugustin Cavalier * modification, are permitted provided that the following conditions 12*75e1de3cSAugustin Cavalier * are met: 13*75e1de3cSAugustin Cavalier * 1. Redistributions of source code must retain the above copyright 14*75e1de3cSAugustin Cavalier * notice, this list of conditions and the following disclaimer. 15*75e1de3cSAugustin Cavalier * 2. Redistributions in binary form must reproduce the above copyright 16*75e1de3cSAugustin Cavalier * notice, this list of conditions and the following disclaimer in the 17*75e1de3cSAugustin Cavalier * documentation and/or other materials provided with the distribution. 18*75e1de3cSAugustin Cavalier * 19*75e1de3cSAugustin Cavalier * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20*75e1de3cSAugustin Cavalier * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21*75e1de3cSAugustin Cavalier * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22*75e1de3cSAugustin Cavalier * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23*75e1de3cSAugustin Cavalier * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24*75e1de3cSAugustin Cavalier * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25*75e1de3cSAugustin Cavalier * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26*75e1de3cSAugustin Cavalier * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27*75e1de3cSAugustin Cavalier * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28*75e1de3cSAugustin Cavalier * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29*75e1de3cSAugustin Cavalier * POSSIBILITY OF SUCH DAMAGE. 30*75e1de3cSAugustin Cavalier */ 31*75e1de3cSAugustin Cavalier 32*75e1de3cSAugustin Cavalier #include <stdio.h> 33*75e1de3cSAugustin Cavalier #include <netdb.h> 34*75e1de3cSAugustin Cavalier #include <stdarg.h> 35*75e1de3cSAugustin Cavalier 36*75e1de3cSAugustin Cavalier /* 37*75e1de3cSAugustin Cavalier * These are not being advertised because the interfaces are non-standard. 38*75e1de3cSAugustin Cavalier * There are versions by linux, aix, qnx, sun, etc. Our versions are used 39*75e1de3cSAugustin Cavalier * internally to provide thread safety; they mostly resemble qnx. 40*75e1de3cSAugustin Cavalier */ 41*75e1de3cSAugustin Cavalier void sethostent_r(FILE **); 42*75e1de3cSAugustin Cavalier struct hostent *gethostent_r(FILE *, struct hostent *, char *, size_t, int *); 43*75e1de3cSAugustin Cavalier void endhostent_r(FILE **); 44*75e1de3cSAugustin Cavalier 45*75e1de3cSAugustin Cavalier struct hostent *gethostbyname_r(const char *, struct hostent *, char *, int, 46*75e1de3cSAugustin Cavalier int *); 47*75e1de3cSAugustin Cavalier struct hostent *gethostbyname2_r(const char *, int, struct hostent *, char *, 48*75e1de3cSAugustin Cavalier size_t, int *); 49*75e1de3cSAugustin Cavalier struct hostent *gethostbyaddr_r(const void *, int, int, struct hostent *, 50*75e1de3cSAugustin Cavalier char *, int, int *); 51*75e1de3cSAugustin Cavalier 52*75e1de3cSAugustin Cavalier extern FILE *_h_file; 53*75e1de3cSAugustin Cavalier 54*75e1de3cSAugustin Cavalier /* 55*75e1de3cSAugustin Cavalier * The following are internal API's and are used only for testing. 56*75e1de3cSAugustin Cavalier */ 57*75e1de3cSAugustin Cavalier struct getnamaddr { 58*75e1de3cSAugustin Cavalier struct hostent *hp; 59*75e1de3cSAugustin Cavalier char *buf; 60*75e1de3cSAugustin Cavalier size_t buflen; 61*75e1de3cSAugustin Cavalier int *he; 62*75e1de3cSAugustin Cavalier }; 63*75e1de3cSAugustin Cavalier 64*75e1de3cSAugustin Cavalier /* /etc/hosts lookup */ 65*75e1de3cSAugustin Cavalier void _hf_sethostsfile(const char *); 66*75e1de3cSAugustin Cavalier int _hf_gethtbyaddr(void *, void *, va_list); 67*75e1de3cSAugustin Cavalier int _hf_gethtbyname(void *, void *, va_list); 68*75e1de3cSAugustin Cavalier 69*75e1de3cSAugustin Cavalier /* DNS lookup */ 70*75e1de3cSAugustin Cavalier int _dns_gethtbyaddr(void *, void *, va_list); 71*75e1de3cSAugustin Cavalier int _dns_gethtbyname(void *, void *, va_list); 72*75e1de3cSAugustin Cavalier 73*75e1de3cSAugustin Cavalier #ifdef YP 74*75e1de3cSAugustin Cavalier /* NIS lookup */ 75*75e1de3cSAugustin Cavalier int _yp_gethtbyaddr(void *, void *, va_list); 76*75e1de3cSAugustin Cavalier int _yp_gethtbyname(void *, void *, va_list); 77*75e1de3cSAugustin Cavalier #endif 78*75e1de3cSAugustin Cavalier 79*75e1de3cSAugustin Cavalier #define HENT_ARRAY(dst, anum, ptr, len) \ 80*75e1de3cSAugustin Cavalier do { \ 81*75e1de3cSAugustin Cavalier size_t _len = (anum + 1) * sizeof(*dst); \ 82*75e1de3cSAugustin Cavalier if (_len > len) \ 83*75e1de3cSAugustin Cavalier goto nospc; \ 84*75e1de3cSAugustin Cavalier dst = (void *)ptr; \ 85*75e1de3cSAugustin Cavalier ptr += _len; \ 86*75e1de3cSAugustin Cavalier len -= _len; \ 87*75e1de3cSAugustin Cavalier } while (/*CONSTCOND*/0) 88*75e1de3cSAugustin Cavalier 89*75e1de3cSAugustin Cavalier #define HENT_COPY(dst, src, slen, ptr, len) \ 90*75e1de3cSAugustin Cavalier do { \ 91*75e1de3cSAugustin Cavalier if ((size_t)slen > len) \ 92*75e1de3cSAugustin Cavalier goto nospc; \ 93*75e1de3cSAugustin Cavalier memcpy(ptr, src, (size_t)slen); \ 94*75e1de3cSAugustin Cavalier dst = ptr; \ 95*75e1de3cSAugustin Cavalier ptr += slen; \ 96*75e1de3cSAugustin Cavalier len -= slen; \ 97*75e1de3cSAugustin Cavalier } while (/* CONSTCOND */0) 98*75e1de3cSAugustin Cavalier 99*75e1de3cSAugustin Cavalier #define HENT_SCOPY(dst, src, ptr, len) \ 100*75e1de3cSAugustin Cavalier do { \ 101*75e1de3cSAugustin Cavalier size_t _len = strlen(src) + 1; \ 102*75e1de3cSAugustin Cavalier HENT_COPY(dst, src, _len, ptr, len); \ 103*75e1de3cSAugustin Cavalier } while (/* CONSTCOND */0) 104*75e1de3cSAugustin Cavalier 105*75e1de3cSAugustin Cavalier #define MAXALIASES 35 106*75e1de3cSAugustin Cavalier #define MAXADDRS 35 107