1/* 2 * Copyright (C) Internet Systems Consortium, Inc. ("ISC") 3 * 4 * SPDX-License-Identifier: MPL-2.0 5 * 6 * This Source Code Form is subject to the terms of the Mozilla Public 7 * License, v. 2.0. If a copy of the MPL was not distributed with this 8 * file, you can obtain one at https://mozilla.org/MPL/2.0/. 9 * 10 * See the COPYRIGHT file distributed with this work for additional 11 * information regarding copyright ownership. 12 */ 13 14/*! \file */ 15 16#ifndef IRS_NETDB_H 17#define IRS_NETDB_H 1 18 19#include <stddef.h> /* Required on FreeBSD (and others?) for size_t. */ 20#include <netdb.h> /* Contractual provision. */ 21 22/* 23 * Undefine all #defines we are interested in as <netdb.h> may or may not have 24 * defined them. 25 */ 26 27/* 28 * Error return codes from gethostbyname() and gethostbyaddr() 29 * (left in extern int h_errno). 30 */ 31 32#undef NETDB_INTERNAL 33#undef NETDB_SUCCESS 34#undef HOST_NOT_FOUND 35#undef TRY_AGAIN 36#undef NO_RECOVERY 37#undef NO_DATA 38#undef NO_ADDRESS 39 40#define NETDB_INTERNAL -1 /* see errno */ 41#define NETDB_SUCCESS 0 /* no problem */ 42#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 43#define TRY_AGAIN 2 /* Non-Authoritive Host not found, or SERVERFAIL */ 44#define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 45#define NO_DATA 4 /* Valid name, no data record of requested type */ 46#define NO_ADDRESS NO_DATA /* no address, look for MX record */ 47 48/* 49 * Error return codes from getaddrinfo(). EAI_INSECUREDATA is our own extension 50 * and it's very unlikely to be already defined, but undef it just in case; it 51 * at least doesn't do any harm. 52 */ 53 54#undef EAI_ADDRFAMILY 55#undef EAI_AGAIN 56#undef EAI_BADFLAGS 57#undef EAI_FAIL 58#undef EAI_FAMILY 59#undef EAI_MEMORY 60#undef EAI_NODATA 61#undef EAI_NONAME 62#undef EAI_SERVICE 63#undef EAI_SOCKTYPE 64#undef EAI_SYSTEM 65#undef EAI_BADHINTS 66#undef EAI_PROTOCOL 67#undef EAI_OVERFLOW 68#undef EAI_INSECUREDATA 69#undef EAI_MAX 70 71#define EAI_ADDRFAMILY 1 /* address family for hostname not supported */ 72#define EAI_AGAIN 2 /* temporary failure in name resolution */ 73#define EAI_BADFLAGS 3 /* invalid value for ai_flags */ 74#define EAI_FAIL 4 /* non-recoverable failure in name resolution */ 75#define EAI_FAMILY 5 /* ai_family not supported */ 76#define EAI_MEMORY 6 /* memory allocation failure */ 77#define EAI_NODATA 7 /* no address associated with hostname */ 78#define EAI_NONAME 8 /* hostname nor servname provided, or not known */ 79#define EAI_SERVICE 9 /* servname not supported for ai_socktype */ 80#define EAI_SOCKTYPE 10 /* ai_socktype not supported */ 81#define EAI_SYSTEM 11 /* system error returned in errno */ 82#define EAI_BADHINTS 12 83#define EAI_PROTOCOL 13 84#define EAI_OVERFLOW 14 85#define EAI_INSECUREDATA 15 86#define EAI_MAX 16 87 88/* 89 * Flag values for getaddrinfo() 90 */ 91#undef AI_PASSIVE 92#undef AI_CANONNAME 93#undef AI_NUMERICHOST 94 95#define AI_PASSIVE 0x00000001 96#define AI_CANONNAME 0x00000002 97#define AI_NUMERICHOST 0x00000004 98 99/* 100 * Flag values for getipnodebyname() 101 */ 102#undef AI_V4MAPPED 103#undef AI_ALL 104#undef AI_ADDRCONFIG 105#undef AI_DEFAULT 106 107#define AI_V4MAPPED 0x00000008 108#define AI_ALL 0x00000010 109#define AI_ADDRCONFIG 0x00000020 110#define AI_DEFAULT (AI_V4MAPPED|AI_ADDRCONFIG) 111 112/* 113 * Constants for getnameinfo() 114 */ 115#undef NI_MAXHOST 116#undef NI_MAXSERV 117 118#define NI_MAXHOST 1025 119#define NI_MAXSERV 32 120 121/* 122 * Flag values for getnameinfo() 123 */ 124#undef NI_NOFQDN 125#undef NI_NUMERICHOST 126#undef NI_NAMEREQD 127#undef NI_NUMERICSERV 128#undef NI_DGRAM 129#undef NI_NUMERICSCOPE 130 131#define NI_NOFQDN 0x00000001 132#define NI_NUMERICHOST 0x00000002 133#define NI_NAMEREQD 0x00000004 134#define NI_NUMERICSERV 0x00000008 135#define NI_DGRAM 0x00000010 136 137/* 138 * Define to map into irs_ namespace. 139 */ 140 141#ifndef __NetBSD__ 142#define IRS_NAMESPACE 143#endif 144 145#ifdef IRS_NAMESPACE 146 147/* 148 * Use our versions not the ones from the C library. 149 */ 150 151#ifdef getnameinfo 152#undef getnameinfo 153#endif 154#define getnameinfo irs_getnameinfo 155 156#ifdef getaddrinfo 157#undef getaddrinfo 158#endif 159#define getaddrinfo irs_getaddrinfo 160 161#ifdef freeaddrinfo 162#undef freeaddrinfo 163#endif 164#define freeaddrinfo irs_freeaddrinfo 165 166#ifdef gai_strerror 167#undef gai_strerror 168#endif 169#define gai_strerror irs_gai_strerror 170 171int 172getaddrinfo(const char *hostname, const char *servname, 173 const struct addrinfo *hints, struct addrinfo **res); 174 175int 176getnameinfo(const struct sockaddr *sa, socklen_t salen, 177 char *host, socklen_t hostlen, 178 char *serv, socklen_t servlen, 179 int flags); 180 181void freeaddrinfo (struct addrinfo *ai); 182 183const char * 184gai_strerror(int ecode); 185 186#endif /* IRS_NAMESPACE */ 187 188/* 189 * Tell Emacs to use C mode on this file. 190 * Local variables: 191 * mode: c 192 * End: 193 */ 194 195#endif /* IRS_NETDB_H */ 196