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11f73ad248
tcpdump/netdissect-stdinc.h
Guy Harris 11f73ad248 Don't require IPv6 library support in order to support IPv6 addresses. 
Have our own routines to convert between IPv4/IPv6 addresses and
strings; that helps if, for example, we want to build binary versions of
tcpdump for Windows that can run both on NT 5 (W2K/WXP), which doesn't
have inet_ntop() or inet_pton(), and NT 6 (Vista/7/8/10), which do.  It
also means that we don't require IPv6 library support on UN*X to print
addresses (if somebody wants to build tcpdump for older UN*Xes lacking
IPv6 support in the system library or in add-on libraries).

Get rid of files in the missing directory that we don't need, and
various no-longer-necessary autoconf tests.
2015-09-17 14:56:44 -07:00

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/*
* Copyright (c) 2002 - 2003
* NetGroup, Politecnico di Torino (Italy)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Politecnico di Torino nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Include the appropriate OS header files on Windows and various flavors
* of UNIX, include various non-OS header files on Windows, and define
* various items as needed, to isolate most of netdissect's platform
* differences to this one file.
*/
#ifndef netdissect_stdinc_h
#define netdissect_stdinc_h
#include <errno.h>
#ifdef _WIN32
/*
* Includes and definitions for Windows.
*/
#include <stdint.h>
#include <stdio.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include "bittypes.h" /* in wpcap's Win32/include */
#include <ctype.h>
#include <time.h>
#include <io.h>
#include <fcntl.h>
#include <sys/types.h>
#include <net/netdb.h> /* in wpcap's Win32/include */
#ifndef uint8_t
#define uint8_t unsigned char
#endif
#ifndef int8_t
#define int8_t signed char
#endif
#ifndef uint16_t
#define uint16_t unsigned short
#endif
#ifndef int16_t
#define int16_t signed short
#endif
#ifndef uint32_t
#define uint32_t unsigned int
#endif
#ifndef int32_t
#define int32_t signed int
#endif
#ifdef _MSC_EXTENSIONS
#ifndef uint64_t
#define uint64_t unsigned _int64
#endif
#ifndef int64_t
#define int64_t _int64
#endif
#ifndef PRId64
#define PRId64 "I64d"
#endif
#ifndef PRIo64
#define PRIo64 "I64o"
#endif
#ifndef PRIu64
#define PRIu64 "I64u"
#endif
#ifndef PRIx64
#define PRIx64 "I64x"
#endif
#else /* _MSC_EXTENSIONS */
#ifndef uint64_t
#define uint64_t unsigned long long
#endif
#ifndef int64_t
#define int64_t long long
#endif
#ifndef PRId64
#define PRId64 "lld"
#endif
#ifndef PRIo64
#define PRIo64 "llo"
#endif
#ifndef PRIu64
#define PRIu64 "llu"
#endif
#ifndef PRIx64
#define PRIx64 "llx"
#endif
#endif /* _MSC_EXTENSIONS */
#ifdef _MSC_VER
#define stat _stat
#define open _open
#define fstat _fstat
#define read _read
#define close _close
#define O_RDONLY _O_RDONLY
#endif /* _MSC_VER */
extern int inet_aton (const char *cp, struct in_addr *addr);
/*
* With MSVC, for C, __inline is used to make a function an inline.
*/
#ifdef _MSC_VER
#define inline __inline
#endif
#ifndef INET6_ADDRSTRLEN
#define INET6_ADDRSTRLEN 46
#endif
/* It is in MSVC's <errno.h>, but not defined in MingW+Watcom.
*/
#ifndef EAFNOSUPPORT
#define EAFNOSUPPORT WSAEAFNOSUPPORT
#endif
#ifndef caddr_t
typedef char* caddr_t;
#endif /* caddr_t */
#define MAXHOSTNAMELEN 64
#define snprintf _snprintf
#define vsnprintf _vsnprintf
#define RETSIGTYPE void
#else /* _WIN32 */
/*
* Includes and definitions for various flavors of UN*X.
*/
#include <ctype.h>
#include <unistd.h>
#include <netdb.h>
#if HAVE_INTTYPES_H
#include <inttypes.h>
#elif HAVE_STDINT_H
#include <stdint.h>
#endif
#include <sys/param.h>
#include <sys/types.h> /* concession to AIX */
#include <sys/time.h>
#include <sys/socket.h>
#include <netinet/in.h>
#ifdef TIME_WITH_SYS_TIME
#include <time.h>
#endif
#include <arpa/inet.h>
#endif /* _WIN32 */
#ifndef HAVE___ATTRIBUTE__
#define __attribute__(x)
#endif
/*
* Used to declare a structure unaligned, so that the C compiler,
* if necessary, generates code that doesn't assume alignment.
* This is required because there is no guarantee that the packet
* data we get from libpcap/WinPcap is properly aligned.
*
* This assumes that, for all compilers that support __attribute__:
*
* 1) they support __attribute__((packed));
*
* 2) for all instruction set architectures requiring strict
* alignment, declaring a structure with that attribute
* causes the compiler to generate code that handles
* misaligned 2-byte, 4-byte, and 8-byte integral
* quantities.
*
* It does not (yet) handle compilers where you can get the compiler
* to generate code of that sort by some other means.
*
* This is required in order to, for example, keep the compiler from
* generating, for
*
* if (bp->bp_htype == 1 && bp->bp_hlen == 6 && bp->bp_op == BOOTPREQUEST) {
*
* in print-bootp.c, code that loads the first 4-byte word of a
* "struct bootp", masking out the bp_hops field, and comparing the result
* against 0x01010600.
*
* Note: this also requires that padding be put into the structure,
* at least for compilers where it's implemented as __attribute__((packed)).
*/
#if !(defined(_MSC_VER) && defined(UNALIGNED))
/* MSVC may have its own macro defined with the same name and purpose. */
#undef UNALIGNED
#define UNALIGNED __attribute__((packed))
#endif
/*
* fopen() read and write modes for text files and binary files.
*/
#if defined(_WIN32) || defined(MSDOS)
#define FOPEN_READ_TXT "rt"
#define FOPEN_READ_BIN "rb"
#define FOPEN_WRITE_TXT "wt"
#define FOPEN_WRITE_BIN "wb"
#else
#define FOPEN_READ_TXT "r"
#define FOPEN_READ_BIN FOPEN_READ_TXT
#define FOPEN_WRITE_TXT "w"
#define FOPEN_WRITE_BIN FOPEN_WRITE_TXT
#endif
/*
* Inline x86 assembler-language versions of ntoh[ls]() and hton[ls](),
* defined if the OS doesn't provide them. These assume no more than
* an 80386, so, for example, it avoids the bswap instruction added in
* the 80486.
*
* (We don't use them on OS X; Apple provides their own, which *doesn't*
* avoid the bswap instruction, as OS X only supports machines that
* have it.)
*/
#if defined(__GNUC__) && defined(__i386__) && !defined(__APPLE__) && !defined(__ntohl)
#undef ntohl
#undef ntohs
#undef htonl
#undef htons
static __inline__ unsigned long __ntohl (unsigned long x);
static __inline__ unsigned short __ntohs (unsigned short x);
#define ntohl(x) __ntohl(x)
#define ntohs(x) __ntohs(x)
#define htonl(x) __ntohl(x)
#define htons(x) __ntohs(x)
static __inline__ unsigned long __ntohl (unsigned long x)
{
__asm__ ("xchgb %b0, %h0\n\t" /* swap lower bytes */
"rorl $16, %0\n\t" /* swap words */
"xchgb %b0, %h0" /* swap higher bytes */
: "=q" (x) : "0" (x));
return (x);
}
static __inline__ unsigned short __ntohs (unsigned short x)
{
__asm__ ("xchgb %b0, %h0" /* swap bytes */
: "=q" (x) : "0" (x));
return (x);
}
#endif
/*
* If the OS doesn't define AF_INET6 and struct in6_addr:
*
* define AF_INET6, so we can use it internally as a "this is an
* IPv6 address" indication;
*
* define struct in6_addr so that we can use it for IPv6 addresses.
*/
#ifndef HAVE_OS_IPV6_SUPPORT
#define AF_INET6 24
struct in6_addr {
union {
__uint8_t __u6_addr8[16];
__uint16_t __u6_addr16[8];
__uint32_t __u6_addr32[4];
} __u6_addr; /* 128-bit IP6 address */
};
#endif
#ifndef NI_MAXHOST
#define NI_MAXHOST 1025
#endif
#ifndef INET_ADDRSTRLEN
#define INET_ADDRSTRLEN 16
#endif
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
/*
* The Apple deprecation workaround macros below were adopted from the
* FreeRADIUS server code under permission of Alan DeKok and Arran Cudbard-Bell.
*/
#define XSTRINGIFY(x) #x
/*
* Macros for controlling warnings in GCC >= 4.2 and clang >= 2.8
*/
#define DIAG_JOINSTR(x,y) XSTRINGIFY(x ## y)
#define DIAG_DO_PRAGMA(x) _Pragma (#x)
#if defined(__GNUC__) && ((__GNUC__ * 100) + __GNUC_MINOR__) >= 402
# define DIAG_PRAGMA(x) DIAG_DO_PRAGMA(GCC diagnostic x)
# if ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406
# define DIAG_OFF(x) DIAG_PRAGMA(push) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x))
# define DIAG_ON(x) DIAG_PRAGMA(pop)
# else
# define DIAG_OFF(x) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x))
# define DIAG_ON(x) DIAG_PRAGMA(warning DIAG_JOINSTR(-W,x))
# endif
#elif defined(__clang__) && ((__clang_major__ * 100) + __clang_minor__ >= 208)
# define DIAG_PRAGMA(x) DIAG_DO_PRAGMA(clang diagnostic x)
# define DIAG_OFF(x) DIAG_PRAGMA(push) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x))
# define DIAG_ON(x) DIAG_PRAGMA(pop)
#else
# define DIAG_OFF(x)
# define DIAG_ON(x)
#endif
/*
* For dealing with APIs which are only deprecated in OSX (like the OpenSSL API)
*/
#ifdef __APPLE__
# define USES_APPLE_DEPRECATED_API DIAG_OFF(deprecated-declarations)
# define USES_APPLE_RST DIAG_ON(deprecated-declarations)
#else
# define USES_APPLE_DEPRECATED_API
# define USES_APPLE_RST
#endif
/*
* end of Apple deprecation workaround macros
*/
#ifndef min
#define min(a,b) ((a)>(b)?(b):(a))
#endif
#ifndef max
#define max(a,b) ((b)>(a)?(b):(a))
#endif
#endif /* netdissect_stdinc_h */
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