| 1 | /*
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| 2 | * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | * 1. Redistributions of source code must retain the above copyright
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| 9 | * notice, this list of conditions and the following disclaimer.
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer in the
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| 12 | * documentation and/or other materials provided with the distribution.
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| 13 | * 3. Neither the name of the project nor the names of its contributors
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| 14 | * may be used to endorse or promote products derived from this software
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| 15 | * without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 27 | * SUCH DAMAGE.
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| 28 | */
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| 29 |
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| 30 | #ifndef HAVE_GETADDRINFO
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| 31 |
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| 32 | /*
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| 33 | * Error return codes from getaddrinfo()
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| 34 | */
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| 35 | #ifdef EAI_ADDRFAMILY
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| 36 | /* If this is defined, there is a conflicting implementation
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| 37 | in the C library, which can't be used for some reason.
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| 38 | Make sure it won't interfere with this emulation. */
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| 39 |
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| 40 | #undef EAI_ADDRFAMILY
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| 41 | #undef EAI_AGAIN
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| 42 | #undef EAI_BADFLAGS
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| 43 | #undef EAI_FAIL
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| 44 | #undef EAI_FAMILY
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| 45 | #undef EAI_MEMORY
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| 46 | #undef EAI_NODATA
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| 47 | #undef EAI_NONAME
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| 48 | #undef EAI_SERVICE
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| 49 | #undef EAI_SOCKTYPE
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| 50 | #undef EAI_SYSTEM
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| 51 | #undef EAI_BADHINTS
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| 52 | #undef EAI_PROTOCOL
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| 53 | #undef EAI_MAX
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| 54 | #undef getaddrinfo
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| 55 | #define getaddrinfo fake_getaddrinfo
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| 56 | #endif /* EAI_ADDRFAMILY */
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| 57 |
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| 58 | #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */
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| 59 | #define EAI_AGAIN 2 /* temporary failure in name resolution */
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| 60 | #define EAI_BADFLAGS 3 /* invalid value for ai_flags */
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| 61 | #define EAI_FAIL 4 /* non-recoverable failure in name resolution */
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| 62 | #define EAI_FAMILY 5 /* ai_family not supported */
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| 63 | #define EAI_MEMORY 6 /* memory allocation failure */
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| 64 | #define EAI_NODATA 7 /* no address associated with hostname */
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| 65 | #define EAI_NONAME 8 /* hostname nor servname provided, or not known */
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| 66 | #define EAI_SERVICE 9 /* servname not supported for ai_socktype */
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| 67 | #define EAI_SOCKTYPE 10 /* ai_socktype not supported */
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| 68 | #define EAI_SYSTEM 11 /* system error returned in errno */
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| 69 | #define EAI_BADHINTS 12
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| 70 | #define EAI_PROTOCOL 13
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| 71 | #define EAI_MAX 14
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| 72 |
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| 73 | /*
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| 74 | * Flag values for getaddrinfo()
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| 75 | */
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| 76 | #ifdef AI_PASSIVE
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| 77 | #undef AI_PASSIVE
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| 78 | #undef AI_CANONNAME
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| 79 | #undef AI_NUMERICHOST
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| 80 | #undef AI_MASK
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| 81 | #undef AI_ALL
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| 82 | #undef AI_V4MAPPED_CFG
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| 83 | #undef AI_ADDRCONFIG
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| 84 | #undef AI_V4MAPPED
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| 85 | #undef AI_DEFAULT
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| 86 | #endif /* AI_PASSIVE */
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| 87 |
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| 88 | #define AI_PASSIVE 0x00000001 /* get address to use bind() */
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| 89 | #define AI_CANONNAME 0x00000002 /* fill ai_canonname */
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| 90 | #define AI_NUMERICHOST 0x00000004 /* prevent name resolution */
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| 91 | /* valid flags for addrinfo */
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| 92 | #define AI_MASK (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST)
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| 93 |
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| 94 | #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
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| 95 | #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */
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| 96 | #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */
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| 97 | #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */
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| 98 | /* special recommended flags for getipnodebyname */
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| 99 | #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG)
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| 100 |
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| 101 | #endif /* !HAVE_GETADDRINFO */
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| 102 |
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| 103 | #ifndef HAVE_GETNAMEINFO
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| 104 |
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| 105 | /*
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| 106 | * Constants for getnameinfo()
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| 107 | */
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| 108 | #ifndef NI_MAXHOST
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| 109 | #define NI_MAXHOST 1025
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| 110 | #define NI_MAXSERV 32
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| 111 | #endif /* !NI_MAXHOST */
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| 112 |
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| 113 | /*
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| 114 | * Flag values for getnameinfo()
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| 115 | */
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| 116 | #ifndef NI_NOFQDN
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| 117 | #define NI_NOFQDN 0x00000001
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| 118 | #define NI_NUMERICHOST 0x00000002
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| 119 | #define NI_NAMEREQD 0x00000004
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| 120 | #define NI_NUMERICSERV 0x00000008
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| 121 | #define NI_DGRAM 0x00000010
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| 122 | #endif /* !NI_NOFQDN */
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| 123 |
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| 124 | #endif /* !HAVE_GETNAMEINFO */
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| 125 |
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| 126 | #ifndef HAVE_ADDRINFO
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| 127 | struct addrinfo {
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| 128 | int ai_flags; /* AI_PASSIVE, AI_CANONNAME */
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| 129 | int ai_family; /* PF_xxx */
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| 130 | int ai_socktype; /* SOCK_xxx */
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| 131 | int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
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| 132 | size_t ai_addrlen; /* length of ai_addr */
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| 133 | char *ai_canonname; /* canonical name for hostname */
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| 134 | struct sockaddr *ai_addr; /* binary address */
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| 135 | struct addrinfo *ai_next; /* next structure in linked list */
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| 136 | };
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| 137 | #endif /* !HAVE_ADDRINFO */
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| 138 |
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| 139 | #ifndef HAVE_SOCKADDR_STORAGE
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| 140 | /*
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| 141 | * RFC 2553: protocol-independent placeholder for socket addresses
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| 142 | */
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| 143 | #define _SS_MAXSIZE 128
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| 144 | #ifdef HAVE_LONG_LONG
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| 145 | #define _SS_ALIGNSIZE (sizeof(PY_LONG_LONG))
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| 146 | #else
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| 147 | #define _SS_ALIGNSIZE (sizeof(double))
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| 148 | #endif /* HAVE_LONG_LONG */
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| 149 | #define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof(u_char) * 2)
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| 150 | #define _SS_PAD2SIZE (_SS_MAXSIZE - sizeof(u_char) * 2 - \
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| 151 | _SS_PAD1SIZE - _SS_ALIGNSIZE)
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| 152 |
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| 153 | struct sockaddr_storage {
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| 154 | #ifdef HAVE_SOCKADDR_SA_LEN
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| 155 | unsigned char ss_len; /* address length */
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| 156 | unsigned char ss_family; /* address family */
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| 157 | #else
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| 158 | unsigned short ss_family; /* address family */
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| 159 | #endif /* HAVE_SOCKADDR_SA_LEN */
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| 160 | char __ss_pad1[_SS_PAD1SIZE];
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| 161 | #ifdef HAVE_LONG_LONG
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| 162 | PY_LONG_LONG __ss_align; /* force desired structure storage alignment */
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| 163 | #else
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| 164 | double __ss_align; /* force desired structure storage alignment */
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| 165 | #endif /* HAVE_LONG_LONG */
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| 166 | char __ss_pad2[_SS_PAD2SIZE];
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| 167 | };
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| 168 | #endif /* !HAVE_SOCKADDR_STORAGE */
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| 169 |
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| 170 | #ifdef __cplusplus
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| 171 | extern "C" {
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| 172 | #endif
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| 173 | extern void freehostent Py_PROTO((struct hostent *));
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| 174 | #ifdef __cplusplus
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| 175 | }
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| 176 | #endif
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