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
127 struct 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
149 struct 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
163 extern "C" {
164 #endif
165 #ifdef ENABLE_IPV6
166 extern void freehostent(struct hostent *);
167 #endif
168 #ifdef __cplusplus
169 }
170 #endif