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: src/include/netdb.h,v 1.45 2009/03/14 20:04:28 das Exp $ 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 _PATH_HEQUIV 78 # define _PATH_HEQUIV "/etc/hosts.equiv" 79 #endif 80 #define _PATH_HOSTS "/etc/hosts" 81 #define _PATH_NETWORKS "/etc/networks" 82 #define _PATH_PROTOCOLS "/etc/protocols" 83 #define _PATH_SERVICES "/etc/services" 84 85 #define h_errno (*__h_errno()) 86 87 /* 88 * Structures returned by network data base library. All addresses are 89 * supplied in host order, and returned in network order (suitable for 90 * use in system calls). 91 */ 92 struct hostent { 93 char *h_name; /* official name of host */ 94 char **h_aliases; /* alias list */ 95 int h_addrtype; /* host address type */ 96 int h_length; /* length of address */ 97 char **h_addr_list; /* list of addresses from name server */ 98 #define h_addr h_addr_list[0] /* address, for backward compatibility */ 99 }; 100 101 struct netent { 102 char *n_name; /* official name of net */ 103 char **n_aliases; /* alias list */ 104 int n_addrtype; /* net address type */ 105 uint32_t n_net; /* network # */ 106 }; 107 108 struct servent { 109 char *s_name; /* official service name */ 110 char **s_aliases; /* alias list */ 111 int s_port; /* port # */ 112 char *s_proto; /* protocol to use */ 113 }; 114 115 struct protoent { 116 char *p_name; /* official protocol name */ 117 char **p_aliases; /* alias list */ 118 int p_proto; /* protocol # */ 119 }; 120 121 struct addrinfo { 122 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */ 123 int ai_family; /* PF_xxx */ 124 int ai_socktype; /* SOCK_xxx */ 125 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ 126 socklen_t ai_addrlen; /* length of ai_addr */ 127 char *ai_canonname; /* canonical name for hostname */ 128 struct sockaddr *ai_addr; /* binary address */ 129 struct addrinfo *ai_next; /* next structure in linked list */ 130 }; 131 132 /* 133 * Error return codes from gethostbyname() and gethostbyaddr() 134 * (left in h_errno). 135 */ 136 137 #define NETDB_INTERNAL -1 /* see errno */ 138 #define NETDB_SUCCESS 0 /* no problem */ 139 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 140 #define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */ 141 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 142 #define NO_DATA 4 /* Valid name, no data record of requested type */ 143 #define NO_ADDRESS NO_DATA /* no address, look for MX record */ 144 145 /* 146 * Error return codes from getaddrinfo() 147 */ 148 /* XXX deprecated */ 149 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */ 150 #define EAI_AGAIN 2 /* temporary failure in name resolution */ 151 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */ 152 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */ 153 #define EAI_FAMILY 5 /* ai_family not supported */ 154 #define EAI_MEMORY 6 /* memory allocation failure */ 155 /* XXX deprecated */ 156 #define EAI_NODATA 7 /* no address associated with hostname */ 157 #define EAI_NONAME 8 /* hostname nor servname provided, or not known */ 158 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */ 159 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */ 160 #define EAI_SYSTEM 11 /* system error returned in errno */ 161 #define EAI_BADHINTS 12 /* invalid value for hints */ 162 #define EAI_PROTOCOL 13 /* resolved protocol is unknown */ 163 #define EAI_OVERFLOW 14 /* argument buffer overflow */ 164 #define EAI_MAX 15 165 166 /* 167 * Flag values for getaddrinfo() 168 */ 169 #define AI_PASSIVE 0x00000001 /* get address to use bind() */ 170 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */ 171 #define AI_NUMERICHOST 0x00000004 /* prevent host name resolution */ 172 #define AI_NUMERICSERV 0x00000008 /* prevent service name resolution */ 173 /* valid flags for addrinfo (not a standard def, apps should not use it) */ 174 #define AI_MASK \ 175 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \ 176 AI_ADDRCONFIG) 177 178 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */ 179 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */ 180 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */ 181 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */ 182 /* special recommended flags for getipnodebyname */ 183 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) 184 185 /* 186 * Constants for getnameinfo() 187 */ 188 #define NI_MAXHOST 1025 189 #define NI_MAXSERV 32 190 191 /* 192 * Flag values for getnameinfo() 193 */ 194 #define NI_NOFQDN 0x00000001 195 #define NI_NUMERICHOST 0x00000002 196 #define NI_NAMEREQD 0x00000004 197 #define NI_NUMERICSERV 0x00000008 198 #define NI_DGRAM 0x00000010 199 /* XXX deprecated */ 200 #define NI_WITHSCOPEID 0x00000020 201 202 203 /* 204 * Scope delimit character 205 */ 206 #define SCOPE_DELIMITER '%' 207 208 __BEGIN_DECLS 209 void endhostent(void); 210 void endnetent(void); 211 void endprotoent(void); 212 void endservent(void); 213 #if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE <= 200112) 214 struct hostent *gethostbyaddr(const void *, socklen_t, int); 215 struct hostent *gethostbyname(const char *); 216 #endif 217 struct hostent *gethostent(void); 218 struct netent *getnetbyaddr(uint32_t, int); 219 struct netent *getnetbyname(const char *); 220 struct netent *getnetent(void); 221 struct protoent *getprotobyname(const char *); 222 struct protoent *getprotobynumber(int); 223 struct protoent *getprotoent(void); 224 struct servent *getservbyname(const char *, const char *); 225 struct servent *getservbyport(int, const char *); 226 struct servent *getservent(void); 227 void sethostent(int); 228 /* void sethostfile(const char *); */ 229 void setnetent(int); 230 void setprotoent(int); 231 int getaddrinfo(const char *, const char *, 232 const struct addrinfo *, struct addrinfo **); 233 int getnameinfo(const struct sockaddr *, socklen_t, char *, 234 size_t, char *, size_t, int); 235 void freeaddrinfo(struct addrinfo *); 236 const char *gai_strerror(int); 237 void setservent(int); 238 239 #if __BSD_VISIBLE 240 void endnetgrent(void); 241 void freehostent(struct hostent *); 242 int gethostbyaddr_r(const void *, socklen_t, int, struct hostent *, 243 char *, size_t, struct hostent **, int *); 244 int gethostbyname_r(const char *, struct hostent *, char *, size_t, 245 struct hostent **, int *); 246 struct hostent *gethostbyname2(const char *, int); 247 int gethostbyname2_r(const char *, int, struct hostent *, char *, 248 size_t, struct hostent **, int *); 249 int gethostent_r(struct hostent *, char *, size_t, 250 struct hostent **, int *); 251 struct hostent *getipnodebyaddr(const void *, size_t, int, int *); 252 struct hostent *getipnodebyname(const char *, int, int, int *); 253 int getnetbyaddr_r(uint32_t, int, struct netent *, char *, size_t, 254 struct netent**, int *); 255 int getnetbyname_r(const char *, struct netent *, char *, size_t, 256 struct netent **, int *); 257 int getnetent_r(struct netent *, char *, size_t, struct netent **, 258 int *); 259 int getnetgrent(char **, char **, char **); 260 int getprotobyname_r(const char *, struct protoent *, char *, 261 size_t, struct protoent **); 262 int getprotobynumber_r(int, struct protoent *, char *, size_t, 263 struct protoent **); 264 int getprotoent_r(struct protoent *, char *, size_t, 265 struct protoent **); 266 int getservbyname_r(const char *, const char *, struct servent *, 267 char *, size_t, struct servent **); 268 int getservbyport_r(int, const char *, struct servent *, char *, 269 size_t, struct servent **); 270 int getservent_r(struct servent *, char *, size_t, 271 struct servent **); 272 void herror(const char *); 273 const char *hstrerror(int); 274 int innetgr(const char *, const char *, const char *, const char *); 275 void setnetgrent(const char *); 276 #endif 277 278 279 /* 280 * PRIVATE functions specific to the FreeBSD implementation 281 */ 282 283 /* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */ 284 int * __h_errno(void); 285 __END_DECLS 286 287 #endif /* !_NETDB_H_ */ 288