The Tcpdump Group git mirrors - tcpdump/blob - missing/addrinfo.h

   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 /* $Id: addrinfo.h,v 1.4 2002-06-11 17:13:36 itojun Exp $ */
  31
  32 #ifndef HAVE_ADDRINFO
  33
  34 /*
  35  * Error return codes from getaddrinfo()
  36  */
  37 #define EAI_ADDRFAMILY   1      /* address family for hostname not supported */
  38 #define EAI_AGAIN        2      /* temporary failure in name resolution */
  39 #define EAI_BADFLAGS     3      /* invalid value for ai_flags */
  40 #define EAI_FAIL         4      /* non-recoverable failure in name resolution */
  41 #define EAI_FAMILY       5      /* ai_family not supported */
  42 #define EAI_MEMORY       6      /* memory allocation failure */
  43 #define EAI_NODATA       7      /* no address associated with hostname */
  44 #define EAI_NONAME       8      /* hostname nor servname provided, or not known */
  45 #define EAI_SERVICE      9      /* servname not supported for ai_socktype */
  46 #define EAI_SOCKTYPE    10      /* ai_socktype not supported */
  47 #define EAI_SYSTEM      11      /* system error returned in errno */
  48 #define EAI_BADHINTS    12
  49 #define EAI_PROTOCOL    13
  50 #define EAI_MAX         14
  51
  52 /* internal error */
  53 #define NETDB_INTERNAL  -1      /* see errno */
  54
  55 /*
  56  * Flag values for getaddrinfo()
  57  */
  58 #define AI_PASSIVE      0x00000001 /* get address to use bind() */
  59 #define AI_CANONNAME    0x00000002 /* fill ai_canonname */
  60 #define AI_NUMERICHOST  0x00000004 /* prevent name resolution */
  61 /* valid flags for addrinfo */
  62 #define AI_MASK         (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST)
  63
  64 #define AI_ALL          0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
  65 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */
  66 #define AI_ADDRCONFIG   0x00000400 /* only if any address is assigned */
  67 #define AI_V4MAPPED     0x00000800 /* accept IPv4-mapped IPv6 address */
  68 /* special recommended flags for getipnodebyname */
  69 #define AI_DEFAULT      (AI_V4MAPPED_CFG | AI_ADDRCONFIG)
  70
  71 struct addrinfo {
  72         int     ai_flags;       /* AI_PASSIVE, AI_CANONNAME */
  73         int     ai_family;      /* PF_xxx */
  74         int     ai_socktype;    /* SOCK_xxx */
  75         int     ai_protocol;    /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
  76         size_t  ai_addrlen;     /* length of ai_addr */
  77         char    *ai_canonname;  /* canonical name for hostname */
  78         struct sockaddr *ai_addr;       /* binary address */
  79         struct addrinfo *ai_next;       /* next structure in linked list */
  80 };
  81
  82 extern void freeaddrinfo (struct addrinfo *);
  83 extern void freehostent (struct hostent *);
  84 extern int getnameinfo (const struct sockaddr *, size_t, char *,
  85                             size_t, char *, size_t, int);
  86 extern struct hostent *getipnodebyaddr (const void *, size_t, int, int *);
  87 extern struct hostent *getipnodebyname (const char *, int, int, int *);
  88 extern int inet_pton (int, const char *, void *);
  89 extern const char *inet_ntop (int, const void *, char *, size_t);
  90 #endif /* HAVE_ADDRINFO */
  91
  92 /*
  93  * Constants for getnameinfo()
  94  */
  95 #ifndef NI_MAXHOST
  96 #define NI_MAXHOST      1025
  97 #endif
  98 #ifndef NI_MAXSERV
  99 #define NI_MAXSERV      32
 100 #endif
 101
 102 /*
 103  * Flag values for getnameinfo()
 104  */
 105 #ifndef NI_NOFQDN
 106 #define NI_NOFQDN       0x00000001
 107 #endif
 108 #ifndef NI_NUMERICHOST
 109 #define NI_NUMERICHOST  0x00000002
 110 #endif
 111 #ifndef NI_NAMEREQD
 112 #define NI_NAMEREQD     0x00000004
 113 #endif
 114 #ifndef NI_NUMERICSERV
 115 #define NI_NUMERICSERV  0x00000008
 116 #endif
 117 #ifndef NI_DGRAM
 118 #define NI_DGRAM        0x00000010
 119 #endif