1 /*
2 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
3 * 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 project 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 PROJECT 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 PROJECT 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 #ifndef ADDR_INFO_H
31 #define ADDR_INFO_H
32 #ifndef HAVE_GETADDRINFO
33
34 /* special compatibility hack */
35 #undef EAI_ADDRFAMILY
36 #undef EAI_AGAIN
37 #undef EAI_BADFLAGS
38 #undef EAI_FAIL
39 #undef EAI_FAMILY
40 #undef EAI_MEMORY
41 #undef EAI_NODATA
42 #undef EAI_NONAME
43 #undef EAI_SERVICE
44 #undef EAI_SOCKTYPE
45 #undef EAI_SYSTEM
46 #undef EAI_BADHINTS
47 #undef EAI_PROTOCOL
48 #undef EAI_MAX
49
50 #undef AI_PASSIVE
51 #undef AI_CANONNAME
52 #undef AI_NUMERICHOST
53 #undef AI_ALL
54 #undef AI_ADDRCONFIG
55 #undef AI_V4MAPPED
56 #undef AI_DEFAULT
57
58 #undef NI_NOFQDN
59 #undef NI_NUMERICHOST
60 #undef NI_NAMEREQD
61 #undef NI_NUMERICSERV
62 #undef NI_DGRAM
63
64 #define addrinfo addrinfo__compat
65 #define getaddrinfo getaddrinfo__compat
66 #define getnameinfo getnameinfo__compat
67 #define freehostent freehostent__compat
68 #define freeaddrinfo freeaddrinfo__compat
69
70 #ifndef __P
71 # ifdef HAVE_PROTOTYPES
72 # define __P(args) args
73 # else
74 # define __P(args) ()
75 # endif
76 #endif
77
78 /* special compatibility hack -- end*/
79
80
81 /*
82 * Error return codes from getaddrinfo()
83 */
84 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */
85 #define EAI_AGAIN 2 /* temporary failure in name resolution */
86 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */
87 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */
88 #define EAI_FAMILY 5 /* ai_family not supported */
89 #define EAI_MEMORY 6 /* memory allocation failure */
90 #define EAI_NODATA 7 /* no address associated with hostname */
91 #define EAI_NONAME 8 /* hostname nor servname provided, or not known */
92 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */
93 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */
94 #define EAI_SYSTEM 11 /* system error returned in errno */
95 #define EAI_BADHINTS 12
96 #define EAI_PROTOCOL 13
97 #define EAI_MAX 14
98
99 /*
100 * Flag values for getaddrinfo()
101 */
102 #define AI_PASSIVE 0x00000001 /* get address to use bind() */
103 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */
104 #define AI_NUMERICHOST 0x00000004 /* prevent name resolution */
105 /* valid flags for addrinfo */
106 #define AI_MASK (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST)
107
108 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
109 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */
110 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */
111 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */
112 /* special recommended flags for getipnodebyname */
113 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG)
114
115 /*
116 * Constants for getnameinfo()
117 */
118 #define NI_MAXHOST 1025
119 #define NI_MAXSERV 32
120
121 /*
122 * Flag values for getnameinfo()
123 */
124 #define NI_NOFQDN 0x00000001
125 #define NI_NUMERICHOST 0x00000002
126 #define NI_NAMEREQD 0x00000004
127 #define NI_NUMERICSERV 0x00000008
128 #define NI_DGRAM 0x00000010
129
130 struct addrinfo {
131 int ai_flags; /* AI_PASSIVE, AI_CANONNAME */
132 int ai_family; /* PF_xxx */
133 int ai_socktype; /* SOCK_xxx */
134 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
135 size_t ai_addrlen; /* length of ai_addr */
136 char *ai_canonname; /* canonical name for hostname */
137 struct sockaddr *ai_addr; /* binary address */
138 struct addrinfo *ai_next; /* next structure in linked list */
139 };
140
141 extern int getaddrinfo __P((
142 const char *hostname, const char *servname,
143 const struct addrinfo *hints,
144 struct addrinfo **res));
145
146 extern int getnameinfo __P((
147 const struct sockaddr *sa,
148 size_t salen,
149 char *host,
150 size_t hostlen,
151 char *serv,
152 size_t servlen,
153 int flags));
154
155 extern void freehostent __P((struct hostent *));
156 extern void freeaddrinfo __P((struct addrinfo *));
157 #if defined __UCLIBC__
158 const
159 #endif
160 extern char *gai_strerror __P((int));
161
162 /* In case there is no definition of offsetof() provided - though any proper
163 Standard C system should have one. */
164
165 #ifndef offsetof
166 #define offsetof(p_type,field) ((size_t)&(((p_type *)0)->field))
167 #endif
168
169 #endif
170 #endif