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 _SIZE_T_DECLARED 64 typedef __size_t size_t; 65 #define _SIZE_T_DECLARED 66 #endif 67 68 #ifndef _SOCKLEN_T_DECLARED 69 typedef __socklen_t socklen_t; 70 #define _SOCKLEN_T_DECLARED 71 #endif 72 73 #ifndef _UINT32_T_DECLARED 74 typedef __uint32_t uint32_t; 75 #define _UINT32_T_DECLARED 76 #endif 77 78 #ifndef _PATH_HEQUIV 79 # define _PATH_HEQUIV "/etc/hosts.equiv" 80 #endif 81 #define _PATH_HOSTS "/etc/hosts" 82 #define _PATH_NETWORKS "/etc/networks" 83 #define _PATH_PROTOCOLS "/etc/protocols" 84 #define _PATH_SERVICES "/etc/services" 85 86 #define h_errno (*__h_errno()) 87 88 /* 89 * Structures returned by network data base library. All addresses are 90 * supplied in host order, and returned in network order (suitable for 91 * use in system calls). 92 */ 93 struct hostent { 94 char *h_name; /* official name of host */ 95 char **h_aliases; /* alias list */ 96 int h_addrtype; /* host address type */ 97 int h_length; /* length of address */ 98 char **h_addr_list; /* list of addresses from name server */ 99 #define h_addr h_addr_list[0] /* address, for backward compatibility */ 100 }; 101 102 struct netent { 103 char *n_name; /* official name of net */ 104 char **n_aliases; /* alias list */ 105 int n_addrtype; /* net address type */ 106 uint32_t n_net; /* network # */ 107 }; 108 109 struct servent { 110 char *s_name; /* official service name */ 111 char **s_aliases; /* alias list */ 112 int s_port; /* port # */ 113 char *s_proto; /* protocol to use */ 114 }; 115 116 struct protoent { 117 char *p_name; /* official protocol name */ 118 char **p_aliases; /* alias list */ 119 int p_proto; /* protocol # */ 120 }; 121 122 struct addrinfo { 123 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */ 124 int ai_family; /* PF_xxx */ 125 int ai_socktype; /* SOCK_xxx */ 126 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ 127 socklen_t ai_addrlen; /* length of ai_addr */ 128 char *ai_canonname; /* canonical name for hostname */ 129 struct sockaddr *ai_addr; /* binary address */ 130 struct addrinfo *ai_next; /* next structure in linked list */ 131 }; 132 133 /* 134 * Error return codes from gethostbyname() and gethostbyaddr() 135 * (left in h_errno). 136 */ 137 138 #define NETDB_INTERNAL -1 /* see errno */ 139 #define NETDB_SUCCESS 0 /* no problem */ 140 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 141 #define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */ 142 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 143 #define NO_DATA 4 /* Valid name, no data record of requested type */ 144 #define NO_ADDRESS NO_DATA /* no address, look for MX record */ 145 146 /* 147 * Error return codes from getaddrinfo() 148 */ 149 #if 0 150 /* obsoleted */ 151 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */ 152 #endif 153 #define EAI_AGAIN 2 /* temporary failure in name resolution */ 154 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */ 155 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */ 156 #define EAI_FAMILY 5 /* ai_family not supported */ 157 #define EAI_MEMORY 6 /* memory allocation failure */ 158 #if 0 159 /* obsoleted */ 160 #define EAI_NODATA 7 /* no address associated with hostname */ 161 #endif 162 #define EAI_NONAME 8 /* hostname nor servname provided, or not known */ 163 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */ 164 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */ 165 #define EAI_SYSTEM 11 /* system error returned in errno */ 166 #define EAI_BADHINTS 12 /* invalid value for hints */ 167 #define EAI_PROTOCOL 13 /* resolved protocol is unknown */ 168 #define EAI_OVERFLOW 14 /* argument buffer overflow */ 169 #define EAI_MAX 15 170 171 /* 172 * Flag values for getaddrinfo() 173 */ 174 #define AI_PASSIVE 0x00000001 /* get address to use bind() */ 175 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */ 176 #define AI_NUMERICHOST 0x00000004 /* prevent host name resolution */ 177 #define AI_NUMERICSERV 0x00000008 /* prevent service name resolution */ 178 /* valid flags for addrinfo (not a standard def, apps should not use it) */ 179 #define AI_MASK \ 180 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \ 181 AI_ADDRCONFIG) 182 183 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */ 184 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */ 185 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */ 186 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */ 187 /* special recommended flags for getipnodebyname */ 188 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) 189 190 /* 191 * Constants for getnameinfo() 192 */ 193 #define NI_MAXHOST 1025 194 #define NI_MAXSERV 32 195 196 /* 197 * Flag values for getnameinfo() 198 */ 199 #define NI_NOFQDN 0x00000001 200 #define NI_NUMERICHOST 0x00000002 201 #define NI_NAMEREQD 0x00000004 202 #define NI_NUMERICSERV 0x00000008 203 #define NI_DGRAM 0x00000010 204 #if 0 /* obsolete */ 205 #define NI_WITHSCOPEID 0x00000020 206 #endif 207 208 /* 209 * Scope delimit character 210 */ 211 #define SCOPE_DELIMITER '%' 212 213 __BEGIN_DECLS 214 void endhostent(void); 215 void endnetent(void); 216 void endprotoent(void); 217 void endservent(void); 218 #if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE <= 200112) 219 struct hostent *gethostbyaddr(const void *, socklen_t, int); 220 struct hostent *gethostbyname(const char *); 221 #endif 222 struct hostent *gethostent(void); 223 struct netent *getnetbyaddr(uint32_t, int); 224 struct netent *getnetbyname(const char *); 225 struct netent *getnetent(void); 226 struct protoent *getprotobyname(const char *); 227 struct protoent *getprotobynumber(int); 228 struct protoent *getprotoent(void); 229 struct servent *getservbyname(const char *, const char *); 230 struct servent *getservbyport(int, const char *); 231 struct servent *getservent(void); 232 void sethostent(int); 233 /* void sethostfile(const char *); */ 234 void setnetent(int); 235 void setprotoent(int); 236 int getaddrinfo(const char *, const char *, 237 const struct addrinfo *, struct addrinfo **); 238 int getnameinfo(const struct sockaddr *, socklen_t, char *, 239 size_t, char *, size_t, int); 240 void freeaddrinfo(struct addrinfo *); 241 const char *gai_strerror(int); 242 void setservent(int); 243 244 #if __BSD_VISIBLE 245 void endnetgrent(void); 246 void freehostent(struct hostent *); 247 int gethostbyaddr_r(const void *, socklen_t, int, struct hostent *, 248 char *, size_t, struct hostent **, int *); 249 int gethostbyname_r(const char *, struct hostent *, char *, size_t, 250 struct hostent **, int *); 251 struct hostent *gethostbyname2(const char *, int); 252 int gethostbyname2_r(const char *, int, struct hostent *, char *, 253 size_t, struct hostent **, int *); 254 int gethostent_r(struct hostent *, char *, size_t, 255 struct hostent **, int *); 256 struct hostent *getipnodebyaddr(const void *, size_t, int, int *); 257 struct hostent *getipnodebyname(const char *, int, int, int *); 258 int getnetbyaddr_r(uint32_t, int, struct netent *, char *, size_t, 259 struct netent**, int *); 260 int getnetbyname_r(const char *, struct netent *, char *, size_t, 261 struct netent **, int *); 262 int getnetent_r(struct netent *, char *, size_t, struct netent **, 263 int *); 264 int getnetgrent(char **, char **, char **); 265 int getprotobyname_r(const char *, struct protoent *, char *, 266 size_t, struct protoent **); 267 int getprotobynumber_r(int, struct protoent *, char *, size_t, 268 struct protoent **); 269 int getprotoent_r(struct protoent *, char *, size_t, 270 struct protoent **); 271 int getservbyname_r(const char *, const char *, struct servent *, 272 char *, size_t, struct servent **); 273 int getservbyport_r(int, const char *, struct servent *, char *, 274 size_t, struct servent **); 275 int getservent_r(struct servent *, char *, size_t, 276 struct servent **); 277 void herror(const char *); 278 __const char *hstrerror(int); 279 int innetgr(const char *, const char *, const char *, const char *); 280 void setnetgrent(const char *); 281 #endif 282 283 284 /* 285 * PRIVATE functions specific to the FreeBSD implementation 286 */ 287 288 /* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */ 289 int * __h_errno(void); 290 __END_DECLS 291 292 #endif /* !_NETDB_H_ */ 293