1 /* 2 * Copyright 2002-2020, 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 37 * 38 * Permission to use, copy, modify, and distribute this software for any 39 * purpose with or without fee is hereby granted, provided that the above 40 * copyright notice and this permission notice appear in all copies, and that 41 * the name of Digital Equipment Corporation not be used in advertising or 42 * publicity pertaining to distribution of the document or software without 43 * specific, written prior permission. 44 * 45 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 46 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 48 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 49 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 50 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 51 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 52 * SOFTWARE. 53 */ 54 55 #ifndef _NETDB_H_ 56 #define _NETDB_H_ 57 58 #include <stdint.h> 59 #include <netinet/in.h> 60 61 #ifdef __cplusplus 62 extern "C" { 63 #endif 64 65 #ifndef _PATH_NETWORKS 66 #define _PATH_NETWORKS "/etc/networks" 67 #endif 68 69 extern int * __h_errno(void); 70 #define h_errno (*__h_errno()) 71 72 /* 73 * Structures returned by network data base library. All addresses are 74 * supplied in host order, and returned in network order (suitable for 75 * use in system calls). 76 */ 77 struct hostent { 78 char *h_name; /* official name of host */ 79 char **h_aliases; /* alias list */ 80 int h_addrtype; /* host address type */ 81 int h_length; /* length of address */ 82 char **h_addr_list; /* list of addresses from name server */ 83 #define h_addr h_addr_list[0] /* address, for backward compatibility */ 84 }; 85 86 struct netent { 87 char *n_name; /* official name of net */ 88 char **n_aliases; /* alias list */ 89 int n_addrtype; /* net address type */ 90 in_addr_t n_net; /* network # */ 91 }; 92 93 struct servent { 94 char *s_name; /* official service name */ 95 char **s_aliases; /* alias list */ 96 int s_port; /* port # */ 97 char *s_proto; /* protocol to use */ 98 }; 99 100 struct protoent { 101 char *p_name; /* official protocol name */ 102 char **p_aliases; /* alias list */ 103 int p_proto; /* protocol # */ 104 }; 105 106 struct addrinfo { 107 int ai_flags; /* AI_PASSIVE, AI_CANONNAME */ 108 int ai_family; /* PF_xxx */ 109 int ai_socktype; /* SOCK_xxx */ 110 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ 111 socklen_t ai_addrlen; /* length of ai_addr */ 112 char *ai_canonname; /* canonical name for hostname */ 113 struct sockaddr *ai_addr; /* binary address */ 114 struct addrinfo *ai_next; /* next structure in linked list */ 115 }; 116 117 /* 118 * Error return codes from gethostbyname() and gethostbyaddr() 119 * (left in extern int h_errno). 120 */ 121 #define NETDB_INTERNAL -1 /* see errno */ 122 #define NETDB_SUCCESS 0 /* no problem */ 123 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 124 #define TRY_AGAIN 2 125 /* Non-Authoritive Host not found, or SERVERFAIL */ 126 #define NO_RECOVERY 3 127 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 128 #define NO_DATA 4 129 /* Valid name, no data record of requested type */ 130 #define NO_ADDRESS NO_DATA /* no address, look for MX record */ 131 132 /* 133 * Error return codes from getaddrinfo() 134 */ 135 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */ 136 #define EAI_AGAIN 2 /* temporary failure in name resolution */ 137 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */ 138 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */ 139 #define EAI_FAMILY 5 /* ai_family not supported */ 140 #define EAI_MEMORY 6 /* memory allocation failure */ 141 #define EAI_NODATA 7 /* no address associated with hostname */ 142 #define EAI_NONAME 8 /* hostname nor servname provided, or not known */ 143 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */ 144 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */ 145 #define EAI_SYSTEM 11 /* system error returned in errno */ 146 #define EAI_BADHINTS 12 147 #define EAI_PROTOCOL 13 148 #define EAI_OVERFLOW 14 149 #define EAI_MAX 15 150 151 /* 152 * Flag values for getaddrinfo() 153 */ 154 #define AI_PASSIVE 0x00000001 155 #define AI_CANONNAME 0x00000002 156 #define AI_NUMERICHOST 0x00000004 157 #define AI_NUMERICSERV 0x00000008 158 #define AI_MASK \ 159 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV \ 160 | AI_ADDRCONFIG) 161 162 /* 163 * Flag values for getipnodebyname() 164 */ 165 #define AI_ALL 0x00000100 166 #define AI_V4MAPPED_CFG 0x00000200 167 #define AI_ADDRCONFIG 0x00000400 168 #define AI_V4MAPPED 0x00000800 169 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) 170 171 /* 172 * Constants for getnameinfo() 173 */ 174 #define NI_MAXHOST 1025 175 #define NI_MAXSERV 32 176 177 /* 178 * Flag values for getnameinfo() 179 */ 180 #define NI_NOFQDN 0x00000001 181 #define NI_NUMERICHOST 0x00000002 182 #define NI_NAMEREQD 0x00000004 183 #define NI_NUMERICSERV 0x00000008 184 #define NI_DGRAM 0x00000010 185 #define NI_WITHSCOPEID 0x00000020 186 #define NI_NUMERICSCOPE 0x00000040 187 188 /* 189 * Scope delimit character 190 */ 191 #define SCOPE_DELIMITER '%' 192 193 void endhostent(void); 194 void endnetent(void); 195 void endprotoent(void); 196 void endservent(void); 197 void freehostent(struct hostent *host); 198 struct hostent *gethostbyaddr(const void *address, socklen_t length, int type); 199 struct hostent *gethostbyname(const char *name); 200 struct hostent *gethostbyname2(const char *name, int type); 201 struct hostent *gethostent(void); 202 struct hostent *getipnodebyaddr(const void *, size_t, int, int *); 203 struct hostent *getipnodebyname(const char *, int, int, int *); 204 struct netent *getnetbyaddr(uint32_t, int); 205 struct netent *getnetbyname(const char *); 206 struct netent *getnetent(void); 207 struct protoent *getprotobyname(const char *); 208 struct protoent *getprotobynumber(int); 209 struct protoent *getprotoent(void); 210 struct servent *getservbyname(const char *, const char *); 211 struct servent *getservbyport(int, const char *); 212 struct servent *getservent(void); 213 void herror(const char *); 214 const char *hstrerror(int); 215 void sethostent(int); 216 void setnetent(int); 217 void setprotoent(int); 218 void setservent(int); 219 int getaddrinfo(const char *, const char *, 220 const struct addrinfo *, struct addrinfo **); 221 int getnameinfo(const struct sockaddr *, socklen_t, char *, 222 socklen_t, char *, socklen_t, int); 223 struct addrinfo *allocaddrinfo(socklen_t); 224 void freeaddrinfo(struct addrinfo *); 225 const char *gai_strerror(int); 226 227 struct hostent *gethostent_r(struct hostent *, char *, int, int *); 228 void sethostent_r(int); 229 void endhostent_r(void); 230 231 struct netent *getnetbyname_r(const char *, struct netent *, 232 char *, int); 233 struct netent *getnetbyaddr_r(long, int, struct netent *, 234 char *, int); 235 struct netent *getnetent_r(struct netent *, char *, int); 236 void setnetent_r(int); 237 void endnetent_r(void); 238 239 struct protoent_data; 240 struct protoent *getprotobyname_r(const char *, 241 struct protoent *, struct protoent_data *); 242 struct protoent *getprotobynumber_r(int, 243 struct protoent *, struct protoent_data *); 244 struct protoent *getprotoent_r(struct protoent *, struct protoent_data *); 245 void setprotoent_r(int, struct protoent_data *); 246 void endprotoent_r(struct protoent_data *); 247 248 struct servent_data; 249 struct servent *getservbyname_r(const char *name, const char *, 250 struct servent *, struct servent_data *); 251 struct servent *getservbyport_r(int port, const char *, 252 struct servent *, struct servent_data *); 253 struct servent *getservent_r(struct servent *, struct servent_data *); 254 void setservent_r(int, struct servent_data *); 255 void endservent_r(struct servent_data *); 256 257 #ifdef __cplusplus 258 } 259 #endif 260 261 #endif /* _NETDB_H_ */ 262