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: /repoman/r/ncvs/src/include/netdb.h,v 1.41 2006/04/15 16:20:26 ume Exp $ 59 */ 60 61 #ifndef _NETDB_H_ 62 #define _NETDB_H_ 63 64 #include <sys/cdefs.h> 65 #include <sys/types.h> 66 #include <sys/socket.h> 67 68 #ifndef _PATH_HEQUIV 69 # define _PATH_HEQUIV "/system/etc/hosts.equiv" 70 #endif 71 #define _PATH_HOSTS "/system/etc/hosts" 72 #define _PATH_NETWORKS "/system/etc/networks" 73 #define _PATH_PROTOCOLS "/system/etc/protocols" 74 #define _PATH_SERVICES "/system/etc/services" 75 76 /* 77 * Structures returned by network data base library. All addresses are 78 * supplied in host order, and returned in network order (suitable for 79 * use in system calls). 80 */ 81 struct hostent { 82 char *h_name; /* official name of host */ 83 char **h_aliases; /* alias list */ 84 int h_addrtype; /* host address type */ 85 int h_length; /* length of address */ 86 char **h_addr_list; /* list of addresses from name server */ 87 #define h_addr h_addr_list[0] /* address, for backward compatibility */ 88 }; 89 90 struct netent { 91 char *n_name; /* official name of net */ 92 char **n_aliases; /* alias list */ 93 int n_addrtype; /* net address type */ 94 uint32_t n_net; /* network # */ 95 }; 96 97 struct servent { 98 char *s_name; /* official service name */ 99 char **s_aliases; /* alias list */ 100 int s_port; /* port # */ 101 char *s_proto; /* protocol to use */ 102 }; 103 104 struct protoent { 105 char *p_name; /* official protocol name */ 106 char **p_aliases; /* alias list */ 107 int p_proto; /* protocol # */ 108 }; 109 110 struct addrinfo { 111 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */ 112 int ai_family; /* PF_xxx */ 113 int ai_socktype; /* SOCK_xxx */ 114 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ 115 socklen_t ai_addrlen; /* length of ai_addr */ 116 char *ai_canonname; /* canonical name for hostname */ 117 struct sockaddr *ai_addr; /* binary address */ 118 struct addrinfo *ai_next; /* next structure in linked list */ 119 }; 120 121 /* 122 * Error return codes from gethostbyname() and gethostbyaddr() 123 * (left in h_errno). 124 */ 125 126 #define NETDB_INTERNAL -1 /* see errno */ 127 #define NETDB_SUCCESS 0 /* no problem */ 128 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 129 #define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */ 130 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 131 #define NO_DATA 4 /* Valid name, no data record of requested type */ 132 #define NO_ADDRESS NO_DATA /* no address, look for MX record */ 133 134 /* 135 * Error return codes from getaddrinfo() 136 */ 137 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */ 138 #define EAI_AGAIN 2 /* temporary failure in name resolution */ 139 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */ 140 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */ 141 #define EAI_FAMILY 5 /* ai_family not supported */ 142 #define EAI_MEMORY 6 /* memory allocation failure */ 143 #define EAI_NODATA 7 /* no address associated with hostname */ 144 #define EAI_NONAME 8 /* hostname nor servname provided, or not known */ 145 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */ 146 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */ 147 #define EAI_SYSTEM 11 /* system error returned in errno */ 148 #define EAI_BADHINTS 12 /* invalid value for hints */ 149 #define EAI_PROTOCOL 13 /* resolved protocol is unknown */ 150 #define EAI_OVERFLOW 14 /* argument buffer overflow */ 151 #define EAI_MAX 15 152 153 /* 154 * Flag values for getaddrinfo() 155 */ 156 #define AI_PASSIVE 0x00000001 /* get address to use bind() */ 157 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */ 158 #define AI_NUMERICHOST 0x00000004 /* prevent host name resolution */ 159 #define AI_NUMERICSERV 0x00000008 /* prevent service name resolution */ 160 /* valid flags for addrinfo (not a standard def, apps should not use it) */ 161 #define AI_MASK \ 162 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \ 163 AI_ADDRCONFIG) 164 165 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */ 166 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */ 167 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */ 168 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */ 169 /* special recommended flags for getipnodebyname */ 170 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) 171 172 /* 173 * Constants for getnameinfo() 174 */ 175 #define NI_MAXHOST 1025 176 #define NI_MAXSERV 32 177 178 /* 179 * Flag values for getnameinfo() 180 */ 181 #define NI_NOFQDN 0x00000001 182 #define NI_NUMERICHOST 0x00000002 183 #define NI_NAMEREQD 0x00000004 184 #define NI_NUMERICSERV 0x00000008 185 #define NI_DGRAM 0x00000010 186 #if 0 /* obsolete */ 187 #define NI_WITHSCOPEID 0x00000020 188 #endif 189 190 /* 191 * Scope delimit character 192 */ 193 #define SCOPE_DELIMITER '%' 194 195 __BEGIN_DECLS 196 #pragma GCC visibility push(default) 197 198 /* BIONIC-BEGIN */ 199 #define h_errno (*__get_h_errno()) 200 int* __get_h_errno(void); 201 /* BIONIC-END */ 202 void endhostent(void); 203 void endnetent(void); 204 void endnetgrent(void); 205 void endprotoent(void); 206 void endservent(void); 207 void freehostent(struct hostent *); 208 struct hostent *gethostbyaddr(const void *, socklen_t, int); 209 int gethostbyaddr_r(const void *, socklen_t, int, struct hostent *, char *, size_t, struct hostent **, int *); 210 struct hostent *gethostbyname(const char *); 211 int gethostbyname_r(const char *, struct hostent *, char *, size_t, struct hostent **, int *); 212 struct hostent *gethostbyname2(const char *, int); 213 int gethostbyname2_r(const char *, int, struct hostent *, char *, size_t, struct hostent **, int *); 214 struct hostent *gethostent(void); 215 int gethostent_r(struct hostent *, char *, size_t, struct hostent **, int *); 216 struct hostent *getipnodebyaddr(const void *, size_t, int, int *); 217 struct hostent *getipnodebyname(const char *, int, int, int *); 218 struct netent *getnetbyaddr(uint32_t, int); 219 int getnetbyaddr_r(uint32_t, int, struct netent *, char *, size_t, struct netent**, int *); 220 struct netent *getnetbyname(const char *); 221 int getnetbyname_r(const char *, struct netent *, char *, size_t, struct netent **, int *); 222 struct netent *getnetent(void); 223 int getnetent_r(struct netent *, char *, size_t, struct netent **, int *); 224 int getnetgrent(char **, char **, char **); 225 struct protoent *getprotobyname(const char *); 226 int getprotobyname_r(const char *, struct protoent *, char *, size_t, struct protoent **); 227 struct protoent *getprotobynumber(int); 228 int getprotobynumber_r(int, struct protoent *, char *, size_t, struct protoent **); 229 struct protoent *getprotoent(void); 230 int getprotoent_r(struct protoent *, char *, size_t, struct protoent **); 231 struct servent *getservbyname(const char *, const char *); 232 struct servent *getservbyport(int, const char *); 233 struct servent *getservent(void); 234 void herror(const char *); 235 const char *hstrerror(int); 236 int innetgr(const char *, const char *, const char *, const char *); 237 void sethostent(int); 238 void setnetent(int); 239 void setprotoent(int); 240 int getaddrinfo(const char *, const char *, const struct addrinfo *, struct addrinfo **); 241 int getnameinfo(const struct sockaddr *, socklen_t, char *, size_t, char *, size_t, int); 242 void freeaddrinfo(struct addrinfo *); 243 const char *gai_strerror(int); 244 void setnetgrent(const char *); 245 void setservent(int); 246 247 #pragma GCC visibility pop 248 __END_DECLS 249 250 #endif /* !_NETDB_H_ */ 251