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