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 * From: Id: netdb.h,v 8.9 1996/11/19 08:39:29 vixie Exp $ 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 64 typedef __uint32_t in_addr_t; 65 #define _IN_ADDR_T_DECLARED 66 #endif 67 68 #ifndef _IN_PORT_T_DECLARED 69 typedef __uint16_t in_port_t; 70 #define _IN_PORT_T_DECLARED 71 #endif 72 73 #ifndef _SIZE_T_DECLARED 74 typedef __size_t size_t; 75 #define _SIZE_T_DECLARED 76 #endif 77 78 #ifndef _SOCKLEN_T_DECLARED 79 typedef __socklen_t socklen_t; 80 #define _SOCKLEN_T_DECLARED 81 #endif 82 83 #ifndef _UINT32_T_DECLARED 84 typedef __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 */ 104 struct 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 }; 112 113 struct 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 }; 119 120 struct 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 }; 126 127 struct protoent { 128 char *p_name; /* official protocol name */ 129 char **p_aliases; /* alias list */ 130 int p_proto; /* protocol # */ 131 }; 132 133 struct 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 gai_strerror(3), see RFC 3493. 161 */ 162 #if __BSD_VISIBLE /* not in POSIX */ 163 /* EAI_ADDRFAMILY was obsoleted by RFC 3493, used as extension */ 164 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */ 165 #endif 166 #define EAI_AGAIN 2 /* name could not be resolved at this time */ 167 #define EAI_BADFLAGS 3 /* flags parameter had an invalid value */ 168 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */ 169 #define EAI_FAMILY 5 /* address family not recognized */ 170 #define EAI_MEMORY 6 /* memory allocation failure */ 171 #if __BSD_VISIBLE /* not in POSIX */ 172 /* EAI_NODATA was obsoleted by RFC 3493, retained here as extension */ 173 #define EAI_NODATA 7 /* no address associated with hostname */ 174 #endif 175 #define EAI_NONAME 8 /* name does not resolve */ 176 #define EAI_SERVICE 9 /* service not recognized for socket type */ 177 #define EAI_SOCKTYPE 10 /* intended socket type was not recognized */ 178 #define EAI_SYSTEM 11 /* system error returned in errno */ 179 #if __BSD_VISIBLE /* not in POSIX */ 180 /* The following 3 are not in RFC 3493 or POSIX, retained for compatibility */ 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 #endif 185 #define EAI_MAX 15 186 187 /* 188 * Flag values for getaddrinfo() 189 */ 190 #define AI_PASSIVE 0x00000001 /* get address to use bind() */ 191 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */ 192 #define AI_NUMERICHOST 0x00000004 /* prevent host name resolution */ 193 #define AI_NUMERICSERV 0x00000008 /* prevent service name resolution */ 194 /* valid flags for addrinfo (not a standard def, apps should not use it) */ 195 #define AI_MASK \ 196 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \ 197 AI_ADDRCONFIG | AI_ALL | AI_V4MAPPED) 198 199 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */ 200 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */ 201 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */ 202 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */ 203 /* special recommended flags for getipnodebyname */ 204 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) 205 206 /* 207 * Constants for getnameinfo() 208 */ 209 #define NI_MAXHOST 1025 210 #define NI_MAXSERV 32 211 212 /* 213 * Flag values for getnameinfo() 214 */ 215 #define NI_NOFQDN 0x00000001 216 #define NI_NUMERICHOST 0x00000002 217 #define NI_NAMEREQD 0x00000004 218 #define NI_NUMERICSERV 0x00000008 219 #define NI_DGRAM 0x00000010 220 #define NI_NUMERICSCOPE 0x00000020 221 222 /* 223 * Scope delimit character 224 */ 225 #define SCOPE_DELIMITER '%' 226 227 __BEGIN_DECLS 228 void endhostent(void); 229 void endnetent(void); 230 void endprotoent(void); 231 void endservent(void); 232 #if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE <= 200112) 233 struct hostent *gethostbyaddr(const void *, socklen_t, int); 234 struct hostent *gethostbyname(const char *); 235 #endif 236 struct hostent *gethostent(void); 237 struct netent *getnetbyaddr(uint32_t, int); 238 struct netent *getnetbyname(const char *); 239 struct netent *getnetent(void); 240 struct protoent *getprotobyname(const char *); 241 struct protoent *getprotobynumber(int); 242 struct protoent *getprotoent(void); 243 struct servent *getservbyname(const char *, const char *); 244 struct servent *getservbyport(int, const char *); 245 struct servent *getservent(void); 246 void sethostent(int); 247 /* void sethostfile(const char *); */ 248 void setnetent(int); 249 void setprotoent(int); 250 int getaddrinfo(const char *, const char *, 251 const struct addrinfo *, struct addrinfo **); 252 int getnameinfo(const struct sockaddr *, socklen_t, char *, 253 size_t, char *, size_t, int); 254 void freeaddrinfo(struct addrinfo *); 255 const char *gai_strerror(int); 256 void setservent(int); 257 258 #if __BSD_VISIBLE 259 void endnetgrent(void); 260 void freehostent(struct hostent *); 261 int gethostbyaddr_r(const void *, socklen_t, int, struct hostent *, 262 char *, size_t, struct hostent **, int *); 263 int gethostbyname_r(const char *, struct hostent *, char *, size_t, 264 struct hostent **, int *); 265 struct hostent *gethostbyname2(const char *, int); 266 int gethostbyname2_r(const char *, int, struct hostent *, char *, 267 size_t, struct hostent **, int *); 268 int gethostent_r(struct hostent *, char *, size_t, 269 struct hostent **, int *); 270 struct hostent *getipnodebyaddr(const void *, size_t, int, int *); 271 struct hostent *getipnodebyname(const char *, int, int, int *); 272 int getnetbyaddr_r(uint32_t, int, struct netent *, char *, size_t, 273 struct netent**, int *); 274 int getnetbyname_r(const char *, struct netent *, char *, size_t, 275 struct netent **, int *); 276 int getnetent_r(struct netent *, char *, size_t, struct netent **, 277 int *); 278 int getnetgrent(char **, char **, char **); 279 int getnetgrent_r(char **, char **, char **, char *, size_t); 280 int getprotobyname_r(const char *, struct protoent *, char *, 281 size_t, struct protoent **); 282 int getprotobynumber_r(int, struct protoent *, char *, size_t, 283 struct protoent **); 284 int getprotoent_r(struct protoent *, char *, size_t, 285 struct protoent **); 286 int getservbyname_r(const char *, const char *, struct servent *, 287 char *, size_t, struct servent **); 288 int getservbyport_r(int, const char *, struct servent *, char *, 289 size_t, struct servent **); 290 int getservent_r(struct servent *, char *, size_t, 291 struct servent **); 292 void herror(const char *); 293 const char *hstrerror(int); 294 int innetgr(const char *, const char *, const char *, const char *); 295 void setnetgrent(const char *); 296 #endif 297 298 299 /* 300 * PRIVATE functions specific to the FreeBSD implementation 301 */ 302 303 /* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */ 304 int * __h_errno(void); 305 __END_DECLS 306 307 #endif /* !_NETDB_H_ */ 308