openbsd-compat/fake-rfc2553.h

   1 /* $Id: fake-rfc2553.h,v 1.16 2008/07/14 11:37:37 djm Exp $ */
   2
   3 /*
   4  * Copyright (C) 2000-2003 Damien Miller.  All rights reserved.
   5  * Copyright (C) 1999 WIDE Project.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the project nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * Pseudo-implementation of RFC2553 name / address resolution functions
  34  *
  35  * But these functions are not implemented correctly. The minimum subset
  36  * is implemented for ssh use only. For example, this routine assumes
  37  * that ai_family is AF_INET. Don't use it for another purpose.
  38  */
  39
  40 #ifndef _FAKE_RFC2553_H
  41 #define _FAKE_RFC2553_H
  42
  43 #include "includes.h"
  44 #include <sys/types.h>
  45 #if defined(HAVE_NETDB_H)
  46 # include <netdb.h>
  47 #endif
  48
  49 /*
  50  * First, socket and INET6 related definitions
  51  */
  52 #ifndef HAVE_STRUCT_SOCKADDR_STORAGE
  53 # define        _SS_MAXSIZE     128     /* Implementation specific max size */
  54 # define       _SS_PADSIZE     (_SS_MAXSIZE - sizeof (struct sockaddr))
  55 struct sockaddr_storage {
  56         struct sockaddr ss_sa;
  57         char            __ss_pad2[_SS_PADSIZE];
  58 };
  59 # define ss_family ss_sa.sa_family
  60 #endif /* !HAVE_STRUCT_SOCKADDR_STORAGE */
  61
  62 #ifndef IN6_IS_ADDR_LOOPBACK
  63 # define IN6_IS_ADDR_LOOPBACK(a) \
  64         (((u_int32_t *)(a))[0] == 0 && ((u_int32_t *)(a))[1] == 0 && \
  65          ((u_int32_t *)(a))[2] == 0 && ((u_int32_t *)(a))[3] == htonl(1))
  66 #endif /* !IN6_IS_ADDR_LOOPBACK */
  67
  68 #ifndef HAVE_STRUCT_IN6_ADDR
  69 struct in6_addr {
  70         u_int8_t        s6_addr[16];
  71 };
  72 #endif /* !HAVE_STRUCT_IN6_ADDR */
  73
  74 #ifndef HAVE_STRUCT_SOCKADDR_IN6
  75 struct sockaddr_in6 {
  76         unsigned short  sin6_family;
  77         u_int16_t       sin6_port;
  78         u_int32_t       sin6_flowinfo;
  79         struct in6_addr sin6_addr;
  80         u_int32_t       sin6_scope_id;
  81 };
  82 #endif /* !HAVE_STRUCT_SOCKADDR_IN6 */
  83
  84 #ifndef AF_INET6
  85 /* Define it to something that should never appear */
  86 #define AF_INET6 AF_MAX
  87 #endif
  88
  89 /*
  90  * Next, RFC2553 name / address resolution API
  91  */
  92
  93 #ifndef NI_NUMERICHOST
  94 # define NI_NUMERICHOST    (1)
  95 #endif
  96 #ifndef NI_NAMEREQD
  97 # define NI_NAMEREQD       (1<<1)
  98 #endif
  99 #ifndef NI_NUMERICSERV
 100 # define NI_NUMERICSERV    (1<<2)
 101 #endif
 102
 103 #ifndef AI_PASSIVE
 104 # define AI_PASSIVE             (1)
 105 #endif
 106 #ifndef AI_CANONNAME
 107 # define AI_CANONNAME           (1<<1)
 108 #endif
 109 #ifndef AI_NUMERICHOST
 110 # define AI_NUMERICHOST         (1<<2)
 111 #endif
 112
 113 #ifndef NI_MAXSERV
 114 # define NI_MAXSERV 32
 115 #endif /* !NI_MAXSERV */
 116 #ifndef NI_MAXHOST
 117 # define NI_MAXHOST 1025
 118 #endif /* !NI_MAXHOST */
 119
 120 #ifndef EAI_NODATA
 121 # define EAI_NODATA     (INT_MAX - 1)
 122 #endif
 123 #ifndef EAI_MEMORY
 124 # define EAI_MEMORY     (INT_MAX - 2)
 125 #endif
 126 #ifndef EAI_NONAME
 127 # define EAI_NONAME     (INT_MAX - 3)
 128 #endif
 129 #ifndef EAI_SYSTEM
 130 # define EAI_SYSTEM     (INT_MAX - 4)
 131 #endif
 132 #ifndef EAI_FAMILY
 133 # define EAI_FAMILY     (INT_MAX - 5)
 134 #endif
 135
 136 #ifndef HAVE_STRUCT_ADDRINFO
 137 struct addrinfo {
 138         int     ai_flags;       /* AI_PASSIVE, AI_CANONNAME */
 139         int     ai_family;      /* PF_xxx */
 140         int     ai_socktype;    /* SOCK_xxx */
 141         int     ai_protocol;    /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
 142         size_t  ai_addrlen;     /* length of ai_addr */
 143         char    *ai_canonname;  /* canonical name for hostname */
 144         struct sockaddr *ai_addr;       /* binary address */
 145         struct addrinfo *ai_next;       /* next structure in linked list */
 146 };
 147 #endif /* !HAVE_STRUCT_ADDRINFO */
 148
 149 #ifndef HAVE_GETADDRINFO
 150 #ifdef getaddrinfo
 151 # undef getaddrinfo
 152 #endif
 153 #define getaddrinfo(a,b,c,d)    (ssh_getaddrinfo(a,b,c,d))
 154 int getaddrinfo(const char *, const char *,
 155     const struct addrinfo *, struct addrinfo **);
 156 #endif /* !HAVE_GETADDRINFO */
 157
 158 #if !defined(HAVE_GAI_STRERROR) && !defined(HAVE_CONST_GAI_STRERROR_PROTO)
 159 #define gai_strerror(a)         (_ssh_compat_gai_strerror(a))
 160 char *gai_strerror(int);
 161 #endif /* !HAVE_GAI_STRERROR */
 162
 163 #ifndef HAVE_FREEADDRINFO
 164 #define freeaddrinfo(a)         (ssh_freeaddrinfo(a))
 165 void freeaddrinfo(struct addrinfo *);
 166 #endif /* !HAVE_FREEADDRINFO */
 167
 168 #ifndef HAVE_GETNAMEINFO
 169 #define getnameinfo(a,b,c,d,e,f,g) (ssh_getnameinfo(a,b,c,d,e,f,g))
 170 int getnameinfo(const struct sockaddr *, size_t, char *, size_t,
 171     char *, size_t, int);
 172 #endif /* !HAVE_GETNAMEINFO */
 173
 174 #endif /* !_FAKE_RFC2553_H */
 175