1/*- 2 * Copyright (c) 1980, 1983, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * - 30 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 31 * 32 * Permission to use, copy, modify, and distribute this software for any 33 * purpose with or without fee is hereby granted, provided that the above 34 * copyright notice and this permission notice appear in all copies, and that 35 * the name of Digital Equipment Corporation not be used in advertising or 36 * publicity pertaining to distribution of the document or software without 37 * specific, written prior permission. 38 * 39 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 40 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 41 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 42 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 43 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 44 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 45 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 46 * SOFTWARE. 47 * - 48 * --Copyright-- 49 */ 50 51/* 52 * @(#)netdb.h 8.1 (Berkeley) 6/2/93 53 * From: Id: netdb.h,v 8.9 1996/11/19 08:39:29 vixie Exp $ 54 * $FreeBSD$ 55 */ 56 57#ifndef _NETDB_H_ 58#define _NETDB_H_ 59 60#include <sys/cdefs.h> 61#include <sys/_types.h> 62 63#ifndef _IN_ADDR_T_DECLARED 64typedef __uint32_t in_addr_t; 65#define _IN_ADDR_T_DECLARED 66#endif 67 68#ifndef _IN_PORT_T_DECLARED 69typedef __uint16_t in_port_t; 70#define _IN_PORT_T_DECLARED 71#endif 72 73#ifndef _SIZE_T_DECLARED 74typedef __size_t size_t; 75#define _SIZE_T_DECLARED 76#endif 77 78#ifndef _SOCKLEN_T_DECLARED 79typedef __socklen_t socklen_t; 80#define _SOCKLEN_T_DECLARED 81#endif 82 83#ifndef _UINT32_T_DECLARED 84typedef __uint32_t uint32_t; 85#define _UINT32_T_DECLARED 86#endif 87 88#ifndef _PATH_HEQUIV 89# define _PATH_HEQUIV "/etc/hosts.equiv" 90#endif 91#define _PATH_HOSTS "/etc/hosts" 92#define _PATH_NETWORKS "/etc/networks" 93#define _PATH_PROTOCOLS "/etc/protocols" 94#define _PATH_SERVICES "/etc/services" 95#define _PATH_SERVICES_DB "/var/db/services.db" 96 97#define h_errno (*__h_errno()) 98 99/* 100 * Structures returned by network data base library. All addresses are 101 * supplied in host order, and returned in network order (suitable for 102 * use in system calls). 103 */ 104struct hostent { 105 char *h_name; /* official name of host */ 106 char **h_aliases; /* alias list */ 107 int h_addrtype; /* host address type */ 108 int h_length; /* length of address */ 109 char **h_addr_list; /* list of addresses from name server */ 110#define h_addr h_addr_list[0] /* address, for backward compatibility */ 111}; 112 113struct netent { 114 char *n_name; /* official name of net */ 115 char **n_aliases; /* alias list */ 116 int n_addrtype; /* net address type */ 117 uint32_t n_net; /* network # */ 118}; 119 120struct servent { 121 char *s_name; /* official service name */ 122 char **s_aliases; /* alias list */ 123 int s_port; /* port # */ 124 char *s_proto; /* protocol to use */ 125}; 126 127struct protoent { 128 char *p_name; /* official protocol name */ 129 char **p_aliases; /* alias list */ 130 int p_proto; /* protocol # */ 131}; 132 133struct addrinfo { 134 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */ 135 int ai_family; /* AF_xxx */ 136 int ai_socktype; /* SOCK_xxx */ 137 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ 138 socklen_t ai_addrlen; /* length of ai_addr */ 139 char *ai_canonname; /* canonical name for hostname */ 140 struct sockaddr *ai_addr; /* binary address */ 141 struct addrinfo *ai_next; /* next structure in linked list */ 142}; 143 144#define IPPORT_RESERVED 1024 145 146/* 147 * Error return codes from gethostbyname() and gethostbyaddr() 148 * (left in h_errno). 149 */ 150 151#define NETDB_INTERNAL -1 /* see errno */ 152#define NETDB_SUCCESS 0 /* no problem */ 153#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 154#define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */ 155#define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 156#define NO_DATA 4 /* Valid name, no data record of requested type */ 157#define NO_ADDRESS NO_DATA /* no address, look for MX record */ 158 159/* 160 * Error return codes from getaddrinfo() 161 */ 162#if 0 163/* obsoleted */ 164#define EAI_ADDRFAMILY 1 /* address family for hostname not supported */ 165#endif 166#define EAI_AGAIN 2 /* temporary failure in name resolution */ 167#define EAI_BADFLAGS 3 /* invalid value for ai_flags */ 168#define EAI_FAIL 4 /* non-recoverable failure in name resolution */ 169#define EAI_FAMILY 5 /* ai_family not supported */ 170#define EAI_MEMORY 6 /* memory allocation failure */ 171#if 0 172/* obsoleted */ 173#define EAI_NODATA 7 /* no address associated with hostname */ 174#endif 175#define EAI_NONAME 8 /* hostname nor servname provided, or not known */ 176#define EAI_SERVICE 9 /* servname not supported for ai_socktype */ 177#define EAI_SOCKTYPE 10 /* ai_socktype not supported */ 178#define EAI_SYSTEM 11 /* system error returned in errno */ 179#define EAI_BADHINTS 12 /* invalid value for hints */ 180#define EAI_PROTOCOL 13 /* resolved protocol is unknown */ 181#define EAI_OVERFLOW 14 /* argument buffer overflow */ 182#define EAI_MAX 15 183 184/* 185 * Flag values for getaddrinfo() 186 */ 187#define AI_PASSIVE 0x00000001 /* get address to use bind() */ 188#define AI_CANONNAME 0x00000002 /* fill ai_canonname */ 189#define AI_NUMERICHOST 0x00000004 /* prevent host name resolution */ 190#define AI_NUMERICSERV 0x00000008 /* prevent service name resolution */ 191/* valid flags for addrinfo (not a standard def, apps should not use it) */ 192#define AI_MASK \ 193 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \ 194 AI_ADDRCONFIG | AI_ALL | AI_V4MAPPED) 195 196#define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */ 197#define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */ 198#define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */ 199#define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */ 200/* special recommended flags for getipnodebyname */ 201#define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) 202 203/* 204 * Constants for getnameinfo() 205 */ 206#define NI_MAXHOST 1025 207#define NI_MAXSERV 32 208 209/* 210 * Flag values for getnameinfo() 211 */ 212#define NI_NOFQDN 0x00000001 213#define NI_NUMERICHOST 0x00000002 214#define NI_NAMEREQD 0x00000004 215#define NI_NUMERICSERV 0x00000008 216#define NI_DGRAM 0x00000010 217#if 0 /* obsolete */ 218#define NI_WITHSCOPEID 0x00000020 219#endif 220 221/* 222 * Scope delimit character 223 */ 224#define SCOPE_DELIMITER '%' 225 226__BEGIN_DECLS 227void endhostent(void); 228void endnetent(void); 229void endprotoent(void); 230void endservent(void); 231#if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE <= 200112) 232struct hostent *gethostbyaddr(const void *, socklen_t, int); 233struct hostent *gethostbyname(const char *); 234#endif 235struct hostent *gethostent(void); 236struct netent *getnetbyaddr(uint32_t, int); 237struct netent *getnetbyname(const char *); 238struct netent *getnetent(void); 239struct protoent *getprotobyname(const char *); 240struct protoent *getprotobynumber(int); 241struct protoent *getprotoent(void); 242struct servent *getservbyname(const char *, const char *); 243struct servent *getservbyport(int, const char *); 244struct servent *getservent(void); 245void sethostent(int); 246/* void sethostfile(const char *); */ 247void setnetent(int); 248void setprotoent(int); 249int getaddrinfo(const char *, const char *, 250 const struct addrinfo *, struct addrinfo **); 251int getnameinfo(const struct sockaddr *, socklen_t, char *, 252 size_t, char *, size_t, int); 253void freeaddrinfo(struct addrinfo *); 254const char *gai_strerror(int); 255void setservent(int); 256 257#if __BSD_VISIBLE 258void endnetgrent(void); 259void freehostent(struct hostent *); 260int gethostbyaddr_r(const void *, socklen_t, int, struct hostent *, 261 char *, size_t, struct hostent **, int *); 262int gethostbyname_r(const char *, struct hostent *, char *, size_t, 263 struct hostent **, int *); 264struct hostent *gethostbyname2(const char *, int); 265int gethostbyname2_r(const char *, int, struct hostent *, char *, 266 size_t, struct hostent **, int *); 267int gethostent_r(struct hostent *, char *, size_t, 268 struct hostent **, int *); 269struct hostent *getipnodebyaddr(const void *, size_t, int, int *); 270struct hostent *getipnodebyname(const char *, int, int, int *); 271int getnetbyaddr_r(uint32_t, int, struct netent *, char *, size_t, 272 struct netent**, int *); 273int getnetbyname_r(const char *, struct netent *, char *, size_t, 274 struct netent **, int *); 275int getnetent_r(struct netent *, char *, size_t, struct netent **, 276 int *); 277int getnetgrent(char **, char **, char **); 278int getnetgrent_r(char **, char **, char **, char *, size_t); 279int getprotobyname_r(const char *, struct protoent *, char *, 280 size_t, struct protoent **); 281int getprotobynumber_r(int, struct protoent *, char *, size_t, 282 struct protoent **); 283int getprotoent_r(struct protoent *, char *, size_t, 284 struct protoent **); 285int getservbyname_r(const char *, const char *, struct servent *, 286 char *, size_t, struct servent **); 287int getservbyport_r(int, const char *, struct servent *, char *, 288 size_t, struct servent **); 289int getservent_r(struct servent *, char *, size_t, 290 struct servent **); 291void herror(const char *); 292const char *hstrerror(int); 293int innetgr(const char *, const char *, const char *, const char *); 294void setnetgrent(const char *); 295#endif 296 297 298/* 299 * PRIVATE functions specific to the FreeBSD implementation 300 */ 301 302/* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */ 303int * __h_errno(void); 304__END_DECLS 305 306#endif /* !_NETDB_H_ */ 307