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#ifdef HAVE_LONG_LONG 145#define _SS_ALIGNSIZE (sizeof(PY_LONG_LONG)) 146#else 147#define _SS_ALIGNSIZE (sizeof(double)) 148#endif /* HAVE_LONG_LONG */ 149#define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof(u_char) * 2) 150#define _SS_PAD2SIZE (_SS_MAXSIZE - sizeof(u_char) * 2 - \ 151 _SS_PAD1SIZE - _SS_ALIGNSIZE) 152 153struct sockaddr_storage { 154#ifdef HAVE_SOCKADDR_SA_LEN 155 unsigned char ss_len; /* address length */ 156 unsigned char ss_family; /* address family */ 157#else 158 unsigned short ss_family; /* address family */ 159#endif /* HAVE_SOCKADDR_SA_LEN */ 160 char __ss_pad1[_SS_PAD1SIZE]; 161#ifdef HAVE_LONG_LONG 162 PY_LONG_LONG __ss_align; /* force desired structure storage alignment */ 163#else 164 double __ss_align; /* force desired structure storage alignment */ 165#endif /* HAVE_LONG_LONG */ 166 char __ss_pad2[_SS_PAD2SIZE]; 167}; 168#endif /* !HAVE_SOCKADDR_STORAGE */ 169 170#ifdef __cplusplus 171extern "C" { 172#endif 173extern void freehostent Py_PROTO((struct hostent *)); 174#ifdef __cplusplus 175} 176#endif 177