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