mirror of
https://github.com/the-tcpdump-group/tcpdump.git
synced 2024-11-23 18:14:29 +08:00
53412397f6
This prevents GCC on SPARC from generating code that assumes those structures are aligned naturally, which they are not guaranteed to be. Move some #defines from interface.h to tcpdump-stdinc.h to make them available to code that doesn't include interface.h. Move the declaration of nextproto6_cksum() to ip6.h, so that only files that use it get it declared, and thus so that you don't need to define "struct ip6_hdr" in everything that includes interface.h. Don't include ip6.h in tcpdump-stdinc.h.
227 lines
6.3 KiB
C
227 lines
6.3 KiB
C
/*
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* Copyright (c) 2002 - 2003
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* NetGroup, Politecnico di Torino (Italy)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Politecnico di Torino nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*
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* @(#) $Header: /tcpdump/master/tcpdump/tcpdump-stdinc.h,v 1.18 2007-11-24 18:13:33 mcr Exp $ (LBL)
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*/
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/*
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* Include the appropriate OS header files on Windows and various flavors
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* of UNIX, and also define some additional items and include various
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* non-OS header files on Windows, and; this isolates most of the platform
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* differences to this one file.
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*/
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#ifndef tcpdump_stdinc_h
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#define tcpdump_stdinc_h
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#ifdef WIN32
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#include <stdio.h>
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#include <winsock2.h>
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#include <Ws2tcpip.h>
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#include "bittypes.h"
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#include <ctype.h>
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#include <time.h>
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#include <io.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <net/netdb.h> /* in wpcap's Win32/include */
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#ifndef NBBY
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#define NBBY 8
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#endif
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#if !defined(__MINGW32__) && !defined(__WATCOMC__)
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#undef toascii
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#define isascii __isascii
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#define toascii __toascii
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#define stat _stat
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#define open _open
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#define fstat _fstat
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#define read _read
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#define close _close
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#define O_RDONLY _O_RDONLY
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typedef short ino_t;
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#endif /* __MINGW32__ */
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#ifdef __MINGW32__
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#include <stdint.h>
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#endif
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/* Protos for missing/x.c functions (ideally <missing/addrinfo.h>
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* should be used, but it clashes with <ws2tcpip.h>).
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*/
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extern const char *inet_ntop (int, const void *, char *, size_t);
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extern int inet_pton (int, const char *, void *);
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extern int inet_aton (const char *cp, struct in_addr *addr);
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#ifndef INET6_ADDRSTRLEN
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#define INET6_ADDRSTRLEN 46
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#endif
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#ifndef toascii
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#define toascii(c) ((c) & 0x7f)
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#endif
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#ifndef caddr_t
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typedef char* caddr_t;
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#endif /* caddr_t */
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#define MAXHOSTNAMELEN 64
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#define NI_MAXHOST 1025
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#define snprintf _snprintf
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#define vsnprintf _vsnprintf
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#define RETSIGTYPE void
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#else /* WIN32 */
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#include <ctype.h>
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#include <unistd.h>
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#include <netdb.h>
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#if HAVE_INTTYPES_H
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#include <inttypes.h>
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#else
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#if HAVE_STDINT_H
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#include <stdint.h>
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#endif
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#endif
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#ifdef HAVE_SYS_BITYPES_H
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#include <sys/bitypes.h>
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#endif
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#include <sys/param.h>
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#include <sys/types.h> /* concession to AIX */
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#ifdef TIME_WITH_SYS_TIME
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#include <time.h>
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#endif
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#include <arpa/inet.h>
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#endif /* WIN32 */
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#ifndef HAVE___ATTRIBUTE__
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#define __attribute__(x)
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#endif
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/*
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* Used to declare a structure unaligned, so that the C compiler,
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* if necessary, generates code that doesn't assume alignment.
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* This is required because there is no guarantee that the packet
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* data we get from libpcap/WinPcap is properly aligned.
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*
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* This assumes that, for all compilers that support __attribute__:
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*
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* 1) they support __attribute__((packed));
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*
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* 2) for all instruction set architectures requiring strict
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* alignment, declaring a structure with that attribute
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* causes the compiler to generate code that handles
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* misaligned 2-byte, 4-byte, and 8-byte integral
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* quantities.
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*
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* It does not (yet) handle compilers where you can get the compiler
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* to generate code of that sort by some other means.
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*
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* This is required in order to, for example, keep the compiler from
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* generating, for
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*
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* if (bp->bp_htype == 1 && bp->bp_hlen == 6 && bp->bp_op == BOOTPREQUEST) {
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*
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* in print-bootp.c, code that loads the first 4-byte word of a
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* "struct bootp", masking out the bp_hops field, and comparing the result
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* against 0x01010600.
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*
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* Note: this also requires that padding be put into the structure,
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* at least for compilers where it's implemented as __attribute__((packed)).
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*/
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#define UNALIGNED __attribute__((packed))
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#if defined(WIN32) || defined(MSDOS)
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#define FOPEN_READ_TXT "rt"
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#define FOPEN_READ_BIN "rb"
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#define FOPEN_WRITE_TXT "wt"
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#define FOPEN_WRITE_BIN "wb"
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#else
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#define FOPEN_READ_TXT "r"
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#define FOPEN_READ_BIN FOPEN_READ_TXT
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#define FOPEN_WRITE_TXT "w"
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#define FOPEN_WRITE_BIN FOPEN_WRITE_TXT
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#endif
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#if defined(__GNUC__) && defined(__i386__) && !defined(__APPLE__) && !defined(__ntohl)
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#undef ntohl
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#undef ntohs
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#undef htonl
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#undef htons
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static __inline__ unsigned long __ntohl (unsigned long x);
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static __inline__ unsigned short __ntohs (unsigned short x);
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#define ntohl(x) __ntohl(x)
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#define ntohs(x) __ntohs(x)
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#define htonl(x) __ntohl(x)
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#define htons(x) __ntohs(x)
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static __inline__ unsigned long __ntohl (unsigned long x)
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{
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__asm__ ("xchgb %b0, %h0\n\t" /* swap lower bytes */
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"rorl $16, %0\n\t" /* swap words */
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"xchgb %b0, %h0" /* swap higher bytes */
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: "=q" (x) : "0" (x));
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return (x);
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}
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static __inline__ unsigned short __ntohs (unsigned short x)
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{
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__asm__ ("xchgb %b0, %h0" /* swap bytes */
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: "=q" (x) : "0" (x));
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return (x);
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}
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#endif
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#ifndef INET_ADDRSTRLEN
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#define INET_ADDRSTRLEN 16
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#endif
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#ifndef TRUE
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#define TRUE 1
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#endif
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#ifndef FALSE
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#define FALSE 0
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#endif
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#endif /* tcpdump_stdinc_h */
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