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 HAVE_GETADDRINFO
31
32/*
33 * Error return codes from getaddrinfo()
34 */
35#ifdef EAI_ADDRFAMILY
36/* If this is defined, there is a conflicting implementation
37 in the C library, which can't be used for some reason.
38 Make sure it won't interfere with this emulation. */
39
40#undef EAI_ADDRFAMILY
41#undef EAI_AGAIN
42#undef EAI_BADFLAGS
43#undef EAI_FAIL
44#undef EAI_FAMILY
45#undef EAI_MEMORY
46#undef EAI_NODATA
47#undef EAI_NONAME
48#undef EAI_SERVICE
49#undef EAI_SOCKTYPE
50#undef EAI_SYSTEM
51#undef EAI_BADHINTS
52#undef EAI_PROTOCOL
53#undef EAI_MAX
54#undef getaddrinfo
55#define getaddrinfo fake_getaddrinfo
56#endif /* EAI_ADDRFAMILY */
57
58#define EAI_ADDRFAMILY 1 /* address family for hostname not supported */
59#define EAI_AGAIN 2 /* temporary failure in name resolution */
60#define EAI_BADFLAGS 3 /* invalid value for ai_flags */
61#define EAI_FAIL 4 /* non-recoverable failure in name resolution */
62#define EAI_FAMILY 5 /* ai_family not supported */
63#define EAI_MEMORY 6 /* memory allocation failure */
64#define EAI_NODATA 7 /* no address associated with hostname */
65#define EAI_NONAME 8 /* hostname nor servname provided, or not known */
66#define EAI_SERVICE 9 /* servname not supported for ai_socktype */
67#define EAI_SOCKTYPE 10 /* ai_socktype not supported */
68#define EAI_SYSTEM 11 /* system error returned in errno */
69#define EAI_BADHINTS 12
70#define EAI_PROTOCOL 13
71#define EAI_MAX 14
72
73/*
74 * Flag values for getaddrinfo()
75 */
76#ifdef AI_PASSIVE
77#undef AI_PASSIVE
78#undef AI_CANONNAME
79#undef AI_NUMERICHOST
80#undef AI_MASK
81#undef AI_ALL
82#undef AI_V4MAPPED_CFG
83#undef AI_ADDRCONFIG
84#undef AI_V4MAPPED
85#undef AI_DEFAULT
86#endif /* AI_PASSIVE */
87
88#define AI_PASSIVE 0x00000001 /* get address to use bind() */
89#define AI_CANONNAME 0x00000002 /* fill ai_canonname */
90#define AI_NUMERICHOST 0x00000004 /* prevent name resolution */
91/* valid flags for addrinfo */
92#define AI_MASK (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST)
93
94#define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
95#define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */
96#define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */
97#define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */
98/* special recommended flags for getipnodebyname */
99#define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG)
100
101#endif /* !HAVE_GETADDRINFO */
102
103#ifndef HAVE_GETNAMEINFO
104
105/*
106 * Constants for getnameinfo()
107 */
108#ifndef NI_MAXHOST
109#define NI_MAXHOST 1025
110#define NI_MAXSERV 32
111#endif /* !NI_MAXHOST */
112
113/*
114 * Flag values for getnameinfo()
115 */
116#ifndef NI_NOFQDN
117#define NI_NOFQDN 0x00000001
118#define NI_NUMERICHOST 0x00000002
119#define NI_NAMEREQD 0x00000004
120#define NI_NUMERICSERV 0x00000008
121#define NI_DGRAM 0x00000010
122#endif /* !NI_NOFQDN */
123
124#endif /* !HAVE_GETNAMEINFO */
125
126#ifndef HAVE_ADDRINFO
127struct addrinfo {
128 int ai_flags; /* AI_PASSIVE, AI_CANONNAME */
129 int ai_family; /* PF_xxx */
130 int ai_socktype; /* SOCK_xxx */
131 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
132 size_t ai_addrlen; /* length of ai_addr */
133 char *ai_canonname; /* canonical name for hostname */
134 struct sockaddr *ai_addr; /* binary address */
135 struct addrinfo *ai_next; /* next structure in linked list */
136};
137#endif /* !HAVE_ADDRINFO */
138
139#ifndef HAVE_SOCKADDR_STORAGE
140/*
141 * RFC 2553: protocol-independent placeholder for socket addresses
142 */
143#define _SS_MAXSIZE 128
144#define _SS_ALIGNSIZE (sizeof(long long))
145#define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof(u_char) * 2)
146#define _SS_PAD2SIZE (_SS_MAXSIZE - sizeof(u_char) * 2 - \
147 _SS_PAD1SIZE - _SS_ALIGNSIZE)
148
149struct sockaddr_storage {
150#ifdef HAVE_SOCKADDR_SA_LEN
151 unsigned char ss_len; /* address length */
152 unsigned char ss_family; /* address family */
153#else
154 unsigned short ss_family; /* address family */
155#endif /* HAVE_SOCKADDR_SA_LEN */
156 char __ss_pad1[_SS_PAD1SIZE];
157 long long __ss_align; /* force desired structure storage alignment */
158 char __ss_pad2[_SS_PAD2SIZE];
159};
160#endif /* !HAVE_SOCKADDR_STORAGE */
161
162#ifdef __cplusplus
163extern "C" {
164#endif
165extern void freehostent(struct hostent *);
166#ifdef __cplusplus
167}
168#endif
169