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: src/include/netdb.h,v 1.45 2009/03/14 20:04:28 das Exp $ 55 */ 56 57 #ifndef _NETDB_H_ 58 #define _NETDB_H_ 59 60 #include <sys/cdefs.h> 61 #include <stdint.h> 62 63 #ifndef _IN_ADDR_T_DECLARED 64 typedef __uint32_t in_addr_t; /* base type for internet address */ 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 _PATH_HEQUIV 84 # define _PATH_HEQUIV "/etc/hosts.equiv" 85 #endif 86 #define _PATH_HOSTS "/etc/hosts" 87 #define _PATH_NETWORKS "/etc/networks" 88 #define _PATH_PROTOCOLS "/etc/protocols" 89 #define _PATH_SERVICES "/etc/services" 90 91 #if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE <= 200112) 92 #define h_errno (*__h_errno()) 93 #endif 94 95 /* 96 * Structures returned by network data base library. All addresses are 97 * supplied in host order, and returned in network order (suitable for 98 * use in system calls). 99 */ 100 struct hostent { 101 char *h_name; /* official name of host */ 102 char **h_aliases; /* alias list */ 103 int h_addrtype; /* host address type */ 104 int h_length; /* length of address */ 105 char **h_addr_list; /* list of addresses from name server */ 106 #if __BSD_VISIBLE 107 #define h_addr h_addr_list[0] /* address, for backward compatibility */ 108 #endif 109 }; 110 111 struct netent { 112 char *n_name; /* official name of net */ 113 char **n_aliases; /* alias list */ 114 int n_addrtype; /* net address type */ 115 uint32_t n_net; /* network # */ 116 }; 117 118 struct servent { 119 char *s_name; /* official service name */ 120 char **s_aliases; /* alias list */ 121 int s_port; /* port # */ 122 char *s_proto; /* protocol to use */ 123 }; 124 125 struct protoent { 126 char *p_name; /* official protocol name */ 127 char **p_aliases; /* alias list */ 128 int p_proto; /* protocol # */ 129 }; 130 131 struct addrinfo { 132 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */ 133 int ai_family; /* PF_xxx */ 134 int ai_socktype; /* SOCK_xxx */ 135 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ 136 socklen_t ai_addrlen; /* length of ai_addr */ 137 char *ai_canonname; /* canonical name for hostname */ 138 struct sockaddr *ai_addr; /* binary address */ 139 struct addrinfo *ai_next; /* next structure in linked list */ 140 }; 141 142 /* 143 * Error return codes from gethostbyname() and gethostbyaddr() 144 * (left in h_errno). 145 */ 146 147 #if __BSD_VISIBLE 148 #define NETDB_INTERNAL -1 /* see errno */ 149 #define NETDB_SUCCESS 0 /* no problem */ 150 #endif 151 #if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE <= 200112) 152 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 153 #define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */ 154 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 155 #define NO_DATA 4 /* Valid name, no data record of requested type */ 156 #endif 157 #if __BSD_VISIBLE 158 #define NO_ADDRESS NO_DATA /* no address, look for MX record */ 159 #endif 160 161 /* 162 * Error return codes from getaddrinfo() 163 */ 164 #if __BSD_VISIBLE 165 /* XXX deprecated */ 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 __BSD_VISIBLE 174 /* XXX deprecated */ 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 #if __BSD_VISIBLE 182 #define EAI_BADHINTS 12 /* invalid value for hints */ 183 #define EAI_PROTOCOL 13 /* resolved protocol is unknown */ 184 #endif 185 #define EAI_OVERFLOW 14 /* argument buffer overflow */ 186 #if __BSD_VISIBLE 187 #define EAI_MAX 15 188 #endif 189 190 /* 191 * Flag values for getaddrinfo() 192 */ 193 #define AI_PASSIVE 0x00000001 /* get address to use bind() */ 194 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */ 195 #define AI_NUMERICHOST 0x00000004 /* prevent host name resolution */ 196 #define AI_NUMERICSERV 0x00000008 /* prevent service name resolution */ 197 #if __BSD_VISIBLE 198 /* valid flags for addrinfo (not a standard def, apps should not use it) */ 199 #define AI_MASK \ 200 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \ 201 AI_ADDRCONFIG) 202 #endif 203 204 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */ 205 #if __BSD_VISIBLE 206 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */ 207 #endif 208 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */ 209 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */ 210 #if __BSD_VISIBLE 211 /* special recommended flags for getipnodebyname */ 212 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) 213 214 /* 215 * Constants for getnameinfo() 216 */ 217 #define NI_MAXHOST 1025 218 #define NI_MAXSERV 32 219 #endif 220 221 /* 222 * Flag values for getnameinfo() 223 */ 224 #define NI_NOFQDN 0x00000001 225 #define NI_NUMERICHOST 0x00000002 226 #define NI_NAMEREQD 0x00000004 227 #define NI_NUMERICSERV 0x00000008 228 #define NI_DGRAM 0x00000010 229 #if __BSD_VISIBLE 230 #define NI_WITHSCOPEID 0x00000020 /* XXX deprecated */ 231 #endif 232 #define NI_NUMERICSCOPE 0x00000040 233 234 #if __BSD_VISIBLE 235 /* 236 * Scope delimit character 237 */ 238 #define SCOPE_DELIMITER '%' 239 #endif 240 241 __BEGIN_DECLS 242 void endhostent(void); 243 void endnetent(void); 244 void endprotoent(void); 245 void endservent(void); 246 #if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE <= 200112) 247 struct hostent *gethostbyaddr(const void *, socklen_t, int); 248 struct hostent *gethostbyname(const char *); 249 #endif 250 struct hostent *gethostent(void); 251 struct netent *getnetbyaddr(uint32_t, int); 252 struct netent *getnetbyname(const char *); 253 struct netent *getnetent(void); 254 struct protoent *getprotobyname(const char *); 255 struct protoent *getprotobynumber(int); 256 struct protoent *getprotoent(void); 257 struct servent *getservbyname(const char *, const char *); 258 struct servent *getservbyport(int, const char *); 259 struct servent *getservent(void); 260 void sethostent(int); 261 /* void sethostfile(const char *); */ 262 void setnetent(int); 263 void setprotoent(int); 264 int getaddrinfo(const char *, const char *, 265 const struct addrinfo *, struct addrinfo **); 266 /* XXX nodeLen and serviceLen should be socklen_t */ 267 int getnameinfo(const struct sockaddr *, socklen_t, char *, 268 size_t, char *, size_t, int); 269 void freeaddrinfo(struct addrinfo *); 270 const char *gai_strerror(int); 271 void setservent(int); 272 273 #if __BSD_VISIBLE 274 void endnetgrent(void); 275 void freehostent(struct hostent *); 276 int gethostbyaddr_r(const void *, socklen_t, int, struct hostent *, 277 char *, size_t, struct hostent **, int *); 278 int gethostbyname_r(const char *, struct hostent *, char *, size_t, 279 struct hostent **, int *); 280 struct hostent *gethostbyname2(const char *, int); 281 int gethostbyname2_r(const char *, int, struct hostent *, char *, 282 size_t, struct hostent **, int *); 283 int gethostent_r(struct hostent *, char *, size_t, 284 struct hostent **, int *); 285 struct hostent *getipnodebyaddr(const void *, size_t, int, int *); 286 struct hostent *getipnodebyname(const char *, int, int, int *); 287 int getnetbyaddr_r(uint32_t, int, struct netent *, char *, size_t, 288 struct netent**, int *); 289 int getnetbyname_r(const char *, struct netent *, char *, size_t, 290 struct netent **, int *); 291 int getnetent_r(struct netent *, char *, size_t, struct netent **, 292 int *); 293 int getnetgrent(char **, char **, char **); 294 int getprotobyname_r(const char *, struct protoent *, char *, 295 size_t, struct protoent **); 296 int getprotobynumber_r(int, struct protoent *, char *, size_t, 297 struct protoent **); 298 int getprotoent_r(struct protoent *, char *, size_t, 299 struct protoent **); 300 int getservbyname_r(const char *, const char *, struct servent *, 301 char *, size_t, struct servent **); 302 int getservbyport_r(int, const char *, struct servent *, char *, 303 size_t, struct servent **); 304 int getservent_r(struct servent *, char *, size_t, 305 struct servent **); 306 void herror(const char *); 307 const char *hstrerror(int); 308 int innetgr(const char *, const char *, const char *, const char *); 309 void setnetgrent(const char *); 310 #endif 311 312 313 /* 314 * PRIVATE functions specific to the FreeBSD implementation 315 */ 316 317 /* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */ 318 int * __h_errno(void); 319 __END_DECLS 320 321 #endif /* !_NETDB_H_ */ 322