1 /* 2 * Copyright 2002-2012 Haiku, Inc. All Rights Reserved. 3 * Distributed under the terms of the MIT License. 4 */ 5 6 /* 7 * Copyright (c) 1980, 1983, 1988, 1993 8 * The Regents of the University of California. All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * - 38 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 39 * 40 * Permission to use, copy, modify, and distribute this software for any 41 * purpose with or without fee is hereby granted, provided that the above 42 * copyright notice and this permission notice appear in all copies, and that 43 * the name of Digital Equipment Corporation not be used in advertising or 44 * publicity pertaining to distribution of the document or software without 45 * specific, written prior permission. 46 * 47 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 48 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 49 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 50 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 51 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 52 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 53 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 54 * SOFTWARE. 55 * - 56 * Portions Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 57 * All rights reserved. 58 * 59 * Redistribution and use in source and binary forms, with or without 60 * modification, are permitted provided that the following conditions 61 * are met: 62 * 1. Redistributions of source code must retain the above copyright 63 * notice, this list of conditions and the following disclaimer. 64 * 2. Redistributions in binary form must reproduce the above copyright 65 * notice, this list of conditions and the following disclaimer in the 66 * documentation and/or other materials provided with the distribution. 67 * 3. All advertising materials mentioning features or use of this software 68 * must display the following acknowledgement: 69 * This product includes software developed by WIDE Project and 70 * its contributors. 71 * 4. Neither the name of the project nor the names of its contributors 72 * may be used to endorse or promote products derived from this software 73 * without specific prior written permission. 74 * 75 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 76 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 77 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 78 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 79 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 80 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 81 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 82 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 83 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 84 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 85 * SUCH DAMAGE. 86 */ 87 #ifndef _NETDB_H_ 88 #define _NETDB_H_ 89 90 91 #include <sys/param.h> 92 #include <sys/types.h> 93 #include <sys/cdefs.h> 94 #include <sys/socket.h> 95 #include <netinet/in.h> 96 #include <stdio.h> 97 98 #ifndef _PATH_NETWORKS 99 #define _PATH_NETWORKS "/etc/networks" 100 #endif 101 102 103 __BEGIN_DECLS 104 extern int * __h_errno(void); 105 __END_DECLS 106 #define h_errno (*__h_errno()) 107 108 /* 109 * Structures returned by network data base library. All addresses are 110 * supplied in host order, and returned in network order (suitable for 111 * use in system calls). 112 */ 113 struct hostent { 114 char *h_name; /* official name of host */ 115 char **h_aliases; /* alias list */ 116 int h_addrtype; /* host address type */ 117 int h_length; /* length of address */ 118 char **h_addr_list; /* list of addresses from name server */ 119 #define h_addr h_addr_list[0] /* address, for backward compatiblity */ 120 }; 121 122 /* 123 * Assumption here is that a network number 124 * fits in an unsigned long -- probably a poor one. 125 */ 126 struct netent { 127 char *n_name; /* official name of net */ 128 char **n_aliases; /* alias list */ 129 int n_addrtype; /* net address type */ 130 in_addr_t n_net; /* network # */ 131 }; 132 133 struct servent { 134 char *s_name; /* official service name */ 135 char **s_aliases; /* alias list */ 136 int s_port; /* port # */ 137 char *s_proto; /* protocol to use */ 138 }; 139 140 struct protoent { 141 char *p_name; /* official protocol name */ 142 char **p_aliases; /* alias list */ 143 int p_proto; /* protocol # */ 144 }; 145 146 struct addrinfo { 147 int ai_flags; /* AI_PASSIVE, AI_CANONNAME */ 148 int ai_family; /* PF_xxx */ 149 int ai_socktype; /* SOCK_xxx */ 150 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ 151 socklen_t ai_addrlen; /* length of ai_addr */ 152 char *ai_canonname; /* canonical name for hostname */ 153 struct sockaddr *ai_addr; /* binary address */ 154 struct addrinfo *ai_next; /* next structure in linked list */ 155 }; 156 157 /* 158 * Error return codes from gethostbyname() and gethostbyaddr() 159 * (left in extern int h_errno). 160 */ 161 #define NETDB_INTERNAL -1 /* see errno */ 162 #define NETDB_SUCCESS 0 /* no problem */ 163 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 164 #define TRY_AGAIN 2 165 /* Non-Authoritive Host not found, or SERVERFAIL */ 166 #define NO_RECOVERY 3 167 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 168 #define NO_DATA 4 169 /* Valid name, no data record of requested type */ 170 #define NO_ADDRESS NO_DATA /* no address, look for MX record */ 171 172 /* 173 * Error return codes from getaddrinfo() 174 */ 175 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */ 176 #define EAI_AGAIN 2 /* temporary failure in name resolution */ 177 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */ 178 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */ 179 #define EAI_FAMILY 5 /* ai_family not supported */ 180 #define EAI_MEMORY 6 /* memory allocation failure */ 181 #define EAI_NODATA 7 /* no address associated with hostname */ 182 #define EAI_NONAME 8 /* hostname nor servname provided, or not known */ 183 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */ 184 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */ 185 #define EAI_SYSTEM 11 /* system error returned in errno */ 186 #define EAI_BADHINTS 12 187 #define EAI_PROTOCOL 13 188 #define EAI_OVERFLOW 14 189 #define EAI_MAX 15 190 191 /* 192 * Flag values for getaddrinfo() 193 */ 194 #define AI_PASSIVE 0x00000001 195 #define AI_CANONNAME 0x00000002 196 #define AI_NUMERICHOST 0x00000004 197 #define AI_NUMERICSERV 0x00000008 198 #define AI_MASK \ 199 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV \ 200 | AI_ADDRCONFIG) 201 202 /* 203 * Flag values for getipnodebyname() 204 */ 205 #define AI_ALL 0x00000100 206 #define AI_V4MAPPED_CFG 0x00000200 207 #define AI_ADDRCONFIG 0x00000400 208 #define AI_V4MAPPED 0x00000800 209 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) 210 211 /* 212 * Constants for getnameinfo() 213 */ 214 #define NI_MAXHOST 1025 215 #define NI_MAXSERV 32 216 217 /* 218 * Flag values for getnameinfo() 219 */ 220 #define NI_NOFQDN 0x00000001 221 #define NI_NUMERICHOST 0x00000002 222 #define NI_NAMEREQD 0x00000004 223 #define NI_NUMERICSERV 0x00000008 224 #define NI_DGRAM 0x00000010 225 #define NI_WITHSCOPEID 0x00000020 226 #define NI_NUMERICSCOPE 0x00000040 227 228 /* 229 * Scope delimit character 230 */ 231 #define SCOPE_DELIMITER '%' 232 233 234 __BEGIN_DECLS 235 void endhostent(void); 236 void endnetent(void); 237 void endprotoent(void); 238 void endservent(void); 239 void freehostent(struct hostent *host); 240 struct hostent *gethostbyaddr(const char *address, socklen_t length, int type); 241 struct hostent *gethostbyname(const char *name); 242 struct hostent *gethostbyname2(const char *name, int type); 243 struct hostent *gethostent(void); 244 struct hostent *getipnodebyaddr(const void *, size_t, int, int *); 245 struct hostent *getipnodebyname(const char *, int, int, int *); 246 struct netent *getnetbyaddr(uint32_t, int); 247 struct netent *getnetbyname(const char *); 248 struct netent *getnetent(void); 249 struct protoent *getprotobyname(const char *); 250 struct protoent *getprotobynumber(int); 251 struct protoent *getprotoent(void); 252 struct servent *getservbyname(const char *, const char *); 253 struct servent *getservbyport(int, const char *); 254 struct servent *getservent(void); 255 void herror(const char *); 256 const char *hstrerror(int); 257 void sethostent(int); 258 /* void sethostfile(const char *); */ 259 void setnetent(int); 260 void setprotoent(int); 261 void setservent(int); 262 int getaddrinfo(const char *, const char *, 263 const struct addrinfo *, struct addrinfo **); 264 int getnameinfo(const struct sockaddr *, socklen_t, char *, 265 socklen_t, char *, socklen_t, int); 266 struct addrinfo *allocaddrinfo(socklen_t); 267 void freeaddrinfo(struct addrinfo *); 268 const char *gai_strerror(int); 269 270 struct hostent *gethostent_r(struct hostent *, char *, int, int *); 271 void sethostent_r(int); 272 void endhostent_r(void); 273 274 struct netent *getnetbyname_r(const char *, struct netent *, 275 char *, int); 276 struct netent *getnetbyaddr_r(long, int, struct netent *, 277 char *, int); 278 struct netent *getnetent_r(struct netent *, char *, int); 279 void setnetent_r(int); 280 void endnetent_r(void); 281 282 struct protoent_data; 283 struct protoent *getprotobyname_r(const char *, 284 struct protoent *, struct protoent_data *); 285 struct protoent *getprotobynumber_r(int, 286 struct protoent *, struct protoent_data *); 287 struct protoent *getprotoent_r(struct protoent *, struct protoent_data *); 288 void setprotoent_r(int, struct protoent_data *); 289 void endprotoent_r(struct protoent_data *); 290 291 struct servent_data; 292 struct servent *getservbyname_r(const char *name, const char *, 293 struct servent *, struct servent_data *); 294 struct servent *getservbyport_r(int port, const char *, 295 struct servent *, struct servent_data *); 296 struct servent *getservent_r(struct servent *, struct servent_data *); 297 void setservent_r(int, struct servent_data *); 298 void endservent_r(struct servent_data *); 299 __END_DECLS 300 301 #endif /* _NETDB_H_ */ 302