hostent.h revision 1.2.4.2
1 1.2.4.2 bouyer /* $NetBSD: hostent.h,v 1.2.4.2 2013/12/18 22:39:32 bouyer Exp $ */ 2 1.2.4.2 bouyer 3 1.2.4.2 bouyer /*- 4 1.2.4.2 bouyer * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 1.2.4.2 bouyer * All rights reserved. 6 1.2.4.2 bouyer * 7 1.2.4.2 bouyer * This code is derived from software contributed to The NetBSD Foundation 8 1.2.4.2 bouyer * by Christos Zoulas. 9 1.2.4.2 bouyer * 10 1.2.4.2 bouyer * Redistribution and use in source and binary forms, with or without 11 1.2.4.2 bouyer * modification, are permitted provided that the following conditions 12 1.2.4.2 bouyer * are met: 13 1.2.4.2 bouyer * 1. Redistributions of source code must retain the above copyright 14 1.2.4.2 bouyer * notice, this list of conditions and the following disclaimer. 15 1.2.4.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.4.2 bouyer * notice, this list of conditions and the following disclaimer in the 17 1.2.4.2 bouyer * documentation and/or other materials provided with the distribution. 18 1.2.4.2 bouyer * 19 1.2.4.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.2.4.2 bouyer * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.2.4.2 bouyer * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.2.4.2 bouyer * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.2.4.2 bouyer * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.2.4.2 bouyer * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.2.4.2 bouyer * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.2.4.2 bouyer * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.2.4.2 bouyer * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.2.4.2 bouyer * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.2.4.2 bouyer * POSSIBILITY OF SUCH DAMAGE. 30 1.2.4.2 bouyer */ 31 1.2.4.2 bouyer 32 1.2.4.2 bouyer #include <stdio.h> 33 1.2.4.2 bouyer #include <netdb.h> 34 1.2.4.2 bouyer #include <stdarg.h> 35 1.2.4.2 bouyer 36 1.2.4.2 bouyer /* 37 1.2.4.2 bouyer * These are not being advertised because the interfaces are non-standard. 38 1.2.4.2 bouyer * There are versions by linux, aix, qnx, sun, etc. Our versions are used 39 1.2.4.2 bouyer * internally to provide thread safety; they mostly resemble qnx. 40 1.2.4.2 bouyer */ 41 1.2.4.2 bouyer void sethostent_r(FILE **); 42 1.2.4.2 bouyer struct hostent *gethostent_r(FILE *, struct hostent *, char *, size_t, int *); 43 1.2.4.2 bouyer void endhostent_r(FILE **); 44 1.2.4.2 bouyer 45 1.2.4.2 bouyer struct hostent *gethostbyname_r(const char *, struct hostent *, char *, size_t, 46 1.2.4.2 bouyer int *); 47 1.2.4.2 bouyer struct hostent *gethostbyname2_r(const char *, int, struct hostent *, char *, 48 1.2.4.2 bouyer size_t, int *); 49 1.2.4.2 bouyer struct hostent *gethostbyaddr_r(const void *, socklen_t, int, struct hostent *, 50 1.2.4.2 bouyer char *, size_t, int *); 51 1.2.4.2 bouyer 52 1.2.4.2 bouyer extern FILE *_h_file; 53 1.2.4.2 bouyer 54 1.2.4.2 bouyer /* 55 1.2.4.2 bouyer * The following are internal API's and are used only for testing. 56 1.2.4.2 bouyer */ 57 1.2.4.2 bouyer struct getnamaddr { 58 1.2.4.2 bouyer struct hostent *hp; 59 1.2.4.2 bouyer char *buf; 60 1.2.4.2 bouyer size_t buflen; 61 1.2.4.2 bouyer int *he; 62 1.2.4.2 bouyer }; 63 1.2.4.2 bouyer 64 1.2.4.2 bouyer /* /etc/hosts lookup */ 65 1.2.4.2 bouyer void _hf_sethostsfile(const char *); 66 1.2.4.2 bouyer int _hf_gethtbyaddr(void *, void *, va_list); 67 1.2.4.2 bouyer int _hf_gethtbyname(void *, void *, va_list); 68 1.2.4.2 bouyer 69 1.2.4.2 bouyer /* DNS lookup */ 70 1.2.4.2 bouyer int _dns_gethtbyaddr(void *, void *, va_list); 71 1.2.4.2 bouyer int _dns_gethtbyname(void *, void *, va_list); 72 1.2.4.2 bouyer 73 1.2.4.2 bouyer #ifdef YP 74 1.2.4.2 bouyer /* NIS lookup */ 75 1.2.4.2 bouyer int _yp_gethtbyaddr(void *, void *, va_list); 76 1.2.4.2 bouyer int _yp_gethtbyname(void *, void *, va_list); 77 1.2.4.2 bouyer #endif 78 1.2.4.2 bouyer 79 1.2.4.2 bouyer #define HENT_ARRAY(dst, anum, ptr, len) \ 80 1.2.4.2 bouyer do { \ 81 1.2.4.2 bouyer size_t _len = (anum + 1) * sizeof(*dst); \ 82 1.2.4.2 bouyer if (_len > len) \ 83 1.2.4.2 bouyer goto nospc; \ 84 1.2.4.2 bouyer dst = (void *)ptr; \ 85 1.2.4.2 bouyer ptr += _len; \ 86 1.2.4.2 bouyer len -= _len; \ 87 1.2.4.2 bouyer } while (/*CONSTCOND*/0) 88 1.2.4.2 bouyer 89 1.2.4.2 bouyer #define HENT_COPY(dst, src, slen, ptr, len) \ 90 1.2.4.2 bouyer do { \ 91 1.2.4.2 bouyer if ((size_t)slen > len) \ 92 1.2.4.2 bouyer goto nospc; \ 93 1.2.4.2 bouyer memcpy(ptr, src, (size_t)slen); \ 94 1.2.4.2 bouyer dst = ptr; \ 95 1.2.4.2 bouyer ptr += slen; \ 96 1.2.4.2 bouyer len -= slen; \ 97 1.2.4.2 bouyer } while (/* CONSTCOND */0) 98 1.2.4.2 bouyer 99 1.2.4.2 bouyer #define HENT_SCOPY(dst, src, ptr, len) \ 100 1.2.4.2 bouyer do { \ 101 1.2.4.2 bouyer size_t _len = strlen(src) + 1; \ 102 1.2.4.2 bouyer HENT_COPY(dst, src, _len, ptr, len); \ 103 1.2.4.2 bouyer } while (/* CONSTCOND */0) 104 1.2.4.2 bouyer 105 1.2.4.2 bouyer #define MAXALIASES 35 106 1.2.4.2 bouyer #define MAXADDRS 35 107
Indexes created Fri Oct 03 02:09:57 GMT 2025