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 #pragma clang diagnostic push 82 #pragma clang diagnostic ignored "-Wnullability-completeness" 83 struct hostent { 84 char *h_name; /* official name of host */ 85 char **h_aliases; /* alias list */ 86 int h_addrtype; /* host address type */ 87 int h_length; /* length of address */ 88 char **h_addr_list; /* list of addresses from name server */ 89 #define h_addr h_addr_list[0] /* address, for backward compatibility */ 90 }; 91 92 struct netent { 93 char *n_name; /* official name of net */ 94 char **n_aliases; /* alias list */ 95 int n_addrtype; /* net address type */ 96 uint32_t n_net; /* network # */ 97 }; 98 99 struct servent { 100 char *s_name; /* official service name */ 101 char **s_aliases; /* alias list */ 102 int s_port; /* port # */ 103 char * _Nullable s_proto; /* protocol to use */ 104 }; 105 106 struct protoent { 107 char *p_name; /* official protocol name */ 108 char **p_aliases; /* alias list */ 109 int p_proto; /* protocol # */ 110 }; 111 112 struct addrinfo { 113 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */ 114 int ai_family; /* PF_xxx */ 115 int ai_socktype; /* SOCK_xxx */ 116 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ 117 socklen_t ai_addrlen; /* length of ai_addr */ 118 char *ai_canonname; /* canonical name for hostname */ 119 struct sockaddr *ai_addr; /* binary address */ 120 struct addrinfo *ai_next; /* next structure in linked list */ 121 }; 122 #pragma clang diagnostic pop 123 124 /* 125 * Error return codes from gethostbyname() and gethostbyaddr() 126 * (left in h_errno). 127 */ 128 129 #define NETDB_INTERNAL -1 /* see errno */ 130 #define NETDB_SUCCESS 0 /* no problem */ 131 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 132 #define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */ 133 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 134 #define NO_DATA 4 /* Valid name, no data record of requested type */ 135 #define NO_ADDRESS NO_DATA /* no address, look for MX record */ 136 137 /* 138 * Error return codes from getaddrinfo() 139 */ 140 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */ 141 #define EAI_AGAIN 2 /* temporary failure in name resolution */ 142 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */ 143 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */ 144 #define EAI_FAMILY 5 /* ai_family not supported */ 145 #define EAI_MEMORY 6 /* memory allocation failure */ 146 #define EAI_NODATA 7 /* no address associated with hostname */ 147 #define EAI_NONAME 8 /* hostname nor servname provided, or not known */ 148 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */ 149 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */ 150 #define EAI_SYSTEM 11 /* system error returned in errno */ 151 #define EAI_BADHINTS 12 /* invalid value for hints */ 152 #define EAI_PROTOCOL 13 /* resolved protocol is unknown */ 153 #define EAI_OVERFLOW 14 /* argument buffer overflow */ 154 #define EAI_MAX 15 155 156 /* 157 * Flag values for getaddrinfo() 158 */ 159 #define AI_PASSIVE 0x00000001 /* get address to use bind() */ 160 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */ 161 #define AI_NUMERICHOST 0x00000004 /* prevent host name resolution */ 162 #define AI_NUMERICSERV 0x00000008 /* prevent service name resolution */ 163 /* valid flags for addrinfo (not a standard def, apps should not use it) */ 164 #define AI_MASK \ 165 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \ 166 AI_ADDRCONFIG) 167 168 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */ 169 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */ 170 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */ 171 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */ 172 /* special recommended flags for getipnodebyname */ 173 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) 174 175 /* 176 * Constants for getnameinfo() 177 */ 178 #define NI_MAXHOST 1025 179 #define NI_MAXSERV 32 180 181 /* 182 * Flag values for getnameinfo() 183 */ 184 #define NI_NOFQDN 0x00000001 185 #define NI_NUMERICHOST 0x00000002 186 #define NI_NAMEREQD 0x00000004 187 #define NI_NUMERICSERV 0x00000008 188 #define NI_DGRAM 0x00000010 189 #if 0 /* obsolete */ 190 #define NI_WITHSCOPEID 0x00000020 191 #endif 192 193 /* 194 * Scope delimit character 195 */ 196 #define SCOPE_DELIMITER '%' 197 198 #define IPPORT_RESERVED 1024 199 200 __BEGIN_DECLS 201 202 int getaddrinfo(const char* _Nullable __node, const char* _Nullable __service, const struct addrinfo* _Nullable __hints, struct addrinfo* _Nullable * _Nonnull __result); 203 void freeaddrinfo(struct addrinfo* _Nullable __ptr); 204 205 /* Android ABI error: POSIX getnameinfo(3) uses socklen_t rather than size_t. */ 206 int getnameinfo(const struct sockaddr* _Nonnull __sa, socklen_t __sa_length, char* _Nullable __host, size_t __host_length, char* _Nullable __service, size_t __service_length, int __flags); 207 const char* _Nonnull gai_strerror(int __error); 208 209 /* These functions are obsolete. Use getaddrinfo/getnameinfo instead. */ 210 #define h_errno (*__get_h_errno()) 211 int* _Nonnull __get_h_errno(void); 212 void herror(const char* _Nonnull __s); 213 const char* _Nonnull hstrerror(int __error); 214 struct hostent* _Nullable gethostbyaddr(const void* _Nonnull __addr, socklen_t __length, int __type); 215 int gethostbyaddr_r(const void* _Nonnull __addr, socklen_t __length, int __type, struct hostent* _Nonnull __ret, char* _Nonnull __buf, size_t __buf_size, struct hostent* _Nullable * _Nonnull __result, int* _Nonnull __h_errno_ptr) __INTRODUCED_IN(23); 216 struct hostent* _Nullable gethostbyname(const char* _Nonnull __name); 217 int gethostbyname_r(const char* _Nonnull __name, struct hostent* _Nonnull __ret, char* _Nonnull __buf, size_t __buf_size, struct hostent* _Nullable * _Nonnull __result, int* _Nonnull __h_errno_ptr); 218 struct hostent* _Nullable gethostbyname2(const char* _Nonnull __name, int __af); 219 int gethostbyname2_r(const char* _Nonnull __name, int __af, struct hostent* _Nonnull __ret, char* _Nonnull __buf, size_t __buf_size, struct hostent* _Nullable * _Nonnull __result, int* _Nonnull __h_errno_ptr) __INTRODUCED_IN(23); 220 void endhostent(void) __INTRODUCED_IN(28); 221 struct hostent* _Nullable gethostent(void); 222 void sethostent(int __stay_open) __INTRODUCED_IN(28); 223 224 /* These functions are obsolete. None of these functions return anything but nullptr. */ 225 void endnetent(void) __INTRODUCED_IN(28); 226 struct netent* _Nullable getnetbyaddr(uint32_t __net, int __type); 227 struct netent* _Nullable getnetbyname(const char* _Nonnull __name); 228 struct netent* _Nullable getnetent(void) __INTRODUCED_IN(28); 229 void setnetent(int __stay_open) __INTRODUCED_IN(28); 230 231 /* None of these functions return anything but nullptr. */ 232 void endprotoent(void) __INTRODUCED_IN(28); 233 struct protoent* _Nullable getprotobyname(const char* _Nonnull __name); 234 struct protoent* _Nullable getprotobynumber(int __proto); 235 struct protoent* _Nullable getprotoent(void) __INTRODUCED_IN(28); 236 void setprotoent(int __stay_open) __INTRODUCED_IN(28); 237 238 /* These functions return entries from a built-in database. */ 239 void endservent(void); 240 struct servent* _Nullable getservbyname(const char* _Nonnull __name, const char* _Nullable __proto); 241 struct servent* _Nullable getservbyport(int __port_in_network_order, const char* _Nullable __proto); 242 struct servent* _Nullable getservent(void); 243 void setservent(int __stay_open); 244 245 __END_DECLS 246 247 #endif 248