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