1 /* 2 * Copyright (C) 2000-2003 Damien Miller. All rights reserved. 3 * Copyright (C) 1999 WIDE Project. 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 /* 31 * Pseudo-implementation of RFC2553 name / address resolution functions 32 * 33 * But these functions are not implemented correctly. The minimum subset 34 * is implemented for ssh use only. For example, this routine assumes 35 * that ai_family is AF_INET. Don't use it for another purpose. 36 */ 37 38 #ifndef _FAKE_RFC2553_H 39 #define _FAKE_RFC2553_H 40 41 #include "includes.h" 42 #include <sys/types.h> 43 #if defined(HAVE_NETDB_H) 44 # include <netdb.h> 45 #endif 46 47 /* 48 * First, socket and INET6 related definitions 49 */ 50 #ifndef HAVE_STRUCT_SOCKADDR_STORAGE 51 # define _SS_MAXSIZE 128 /* Implementation specific max size */ 52 # define _SS_PADSIZE (_SS_MAXSIZE - sizeof (struct sockaddr)) 53 struct sockaddr_storage { 54 struct sockaddr ss_sa; 55 char __ss_pad2[_SS_PADSIZE]; 56 }; 57 # define ss_family ss_sa.sa_family 58 #endif /* !HAVE_STRUCT_SOCKADDR_STORAGE */ 59 60 #ifndef IN6_IS_ADDR_LOOPBACK 61 # define IN6_IS_ADDR_LOOPBACK(a) \ 62 (((u_int32_t *)(a))[0] == 0 && ((u_int32_t *)(a))[1] == 0 && \ 63 ((u_int32_t *)(a))[2] == 0 && ((u_int32_t *)(a))[3] == htonl(1)) 64 #endif /* !IN6_IS_ADDR_LOOPBACK */ 65 66 #ifndef HAVE_STRUCT_IN6_ADDR 67 struct in6_addr { 68 u_int8_t s6_addr[16]; 69 }; 70 #endif /* !HAVE_STRUCT_IN6_ADDR */ 71 72 #ifndef HAVE_STRUCT_SOCKADDR_IN6 73 struct sockaddr_in6 { 74 unsigned short sin6_family; 75 u_int16_t sin6_port; 76 u_int32_t sin6_flowinfo; 77 struct in6_addr sin6_addr; 78 u_int32_t sin6_scope_id; 79 }; 80 #endif /* !HAVE_STRUCT_SOCKADDR_IN6 */ 81 82 #ifndef AF_INET6 83 /* Define it to something that should never appear */ 84 #define AF_INET6 AF_MAX 85 #endif 86 87 /* 88 * Next, RFC2553 name / address resolution API 89 */ 90 91 #ifndef NI_NUMERICHOST 92 # define NI_NUMERICHOST (1) 93 #endif 94 #ifndef NI_NAMEREQD 95 # define NI_NAMEREQD (1<<1) 96 #endif 97 #ifndef NI_NUMERICSERV 98 # define NI_NUMERICSERV (1<<2) 99 #endif 100 101 #ifndef AI_PASSIVE 102 # define AI_PASSIVE (1) 103 #endif 104 #ifndef AI_CANONNAME 105 # define AI_CANONNAME (1<<1) 106 #endif 107 #ifndef AI_NUMERICHOST 108 # define AI_NUMERICHOST (1<<2) 109 #endif 110 #ifndef AI_NUMERICSERV 111 # define AI_NUMERICSERV (1<<3) 112 #endif 113 114 #ifndef NI_MAXSERV 115 # define NI_MAXSERV 32 116 #endif /* !NI_MAXSERV */ 117 #ifndef NI_MAXHOST 118 # define NI_MAXHOST 1025 119 #endif /* !NI_MAXHOST */ 120 121 #ifndef EAI_NODATA 122 # define EAI_NODATA (INT_MAX - 1) 123 #endif 124 #ifndef EAI_MEMORY 125 # define EAI_MEMORY (INT_MAX - 2) 126 #endif 127 #ifndef EAI_NONAME 128 # define EAI_NONAME (INT_MAX - 3) 129 #endif 130 #ifndef EAI_SYSTEM 131 # define EAI_SYSTEM (INT_MAX - 4) 132 #endif 133 #ifndef EAI_FAMILY 134 # define EAI_FAMILY (INT_MAX - 5) 135 #endif 136 137 #ifndef HAVE_STRUCT_ADDRINFO 138 struct addrinfo { 139 int ai_flags; /* AI_PASSIVE, AI_CANONNAME */ 140 int ai_family; /* PF_xxx */ 141 int ai_socktype; /* SOCK_xxx */ 142 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ 143 size_t ai_addrlen; /* length of ai_addr */ 144 char *ai_canonname; /* canonical name for hostname */ 145 struct sockaddr *ai_addr; /* binary address */ 146 struct addrinfo *ai_next; /* next structure in linked list */ 147 }; 148 #endif /* !HAVE_STRUCT_ADDRINFO */ 149 150 #ifndef HAVE_GETADDRINFO 151 #ifdef getaddrinfo 152 # undef getaddrinfo 153 #endif 154 #define getaddrinfo(a,b,c,d) (ssh_getaddrinfo(a,b,c,d)) 155 int getaddrinfo(const char *, const char *, 156 const struct addrinfo *, struct addrinfo **); 157 #endif /* !HAVE_GETADDRINFO */ 158 159 #if !defined(HAVE_GAI_STRERROR) && !defined(HAVE_CONST_GAI_STRERROR_PROTO) 160 #define gai_strerror(a) (_ssh_compat_gai_strerror(a)) 161 char *gai_strerror(int); 162 #endif /* !HAVE_GAI_STRERROR */ 163 164 #ifndef HAVE_FREEADDRINFO 165 #define freeaddrinfo(a) (ssh_freeaddrinfo(a)) 166 void freeaddrinfo(struct addrinfo *); 167 #endif /* !HAVE_FREEADDRINFO */ 168 169 #ifndef HAVE_GETNAMEINFO 170 #define getnameinfo(a,b,c,d,e,f,g) (ssh_getnameinfo(a,b,c,d,e,f,g)) 171 int getnameinfo(const struct sockaddr *, size_t, char *, size_t, 172 char *, size_t, int); 173 #endif /* !HAVE_GETNAMEINFO */ 174 175 #endif /* !_FAKE_RFC2553_H */ 176 177
