1/*
2 * Copyright (c) 2002 - 2003
3 * NetGroup, Politecnico di Torino (Italy)
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
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 Politecnico di Torino nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 *
32 * @(#) $Header: /tcpdump/master/tcpdump/tcpdump-stdinc.h,v 1.18 2007-11-24 18:13:33 mcr Exp $ (LBL)
33 */
34
35/*
36 * Include the appropriate OS header files on Windows and various flavors
37 * of UNIX, and also define some additional items and include various
38 * non-OS header files on Windows, and; this isolates most of the platform
39 * differences to this one file.
40 */
41
42#ifndef tcpdump_stdinc_h
43#define tcpdump_stdinc_h
44
45#ifdef WIN32
46
47#include <stdio.h>
48#include <winsock2.h>
49#include <Ws2tcpip.h>
50#include "bittypes.h"
51#include <ctype.h>
52#include <time.h>
53#include <io.h>
54#include <fcntl.h>
55#include <sys/types.h>
56#include <net/netdb.h>  /* in wpcap's Win32/include */
57
58#ifndef NBBY
59#define NBBY	8
60#endif
61
62#if !defined(__MINGW32__) && !defined(__WATCOMC__)
63#define stat _stat
64#define open _open
65#define fstat _fstat
66#define read _read
67#define close _close
68#define O_RDONLY _O_RDONLY
69#endif /* __MINGW32__ */
70
71#ifdef __MINGW32__
72#include <stdint.h>
73#endif
74
75/* Protos for missing/x.c functions (ideally <missing/addrinfo.h>
76 * should be used, but it clashes with <ws2tcpip.h>).
77 */
78extern const char *inet_ntop (int, const void *, char *, size_t);
79extern int inet_pton (int, const char *, void *);
80extern int inet_aton (const char *cp, struct in_addr *addr);
81
82/*
83 * With MSVC, for C, __inline is used to make a function an inline.
84 */
85#ifdef _MSC_VER
86#define inline __inline
87#endif
88
89#ifndef INET6_ADDRSTRLEN
90#define INET6_ADDRSTRLEN 46
91#endif
92
93#ifndef caddr_t
94typedef char* caddr_t;
95#endif /* caddr_t */
96
97#define MAXHOSTNAMELEN	64
98#define	NI_MAXHOST	1025
99#define snprintf _snprintf
100#define vsnprintf _vsnprintf
101#define RETSIGTYPE void
102
103#else /* WIN32 */
104
105#include <ctype.h>
106#include <unistd.h>
107#include <netdb.h>
108#if HAVE_INTTYPES_H
109#include <inttypes.h>
110#else
111#if HAVE_STDINT_H
112#include <stdint.h>
113#endif
114#endif
115#ifdef HAVE_SYS_BITYPES_H
116#include <sys/bitypes.h>
117#endif
118#include <sys/param.h>
119#include <sys/types.h>			/* concession to AIX */
120#include <sys/time.h>
121#include <sys/socket.h>
122#include <netinet/in.h>
123
124#ifdef TIME_WITH_SYS_TIME
125#include <time.h>
126#endif
127
128#include <arpa/inet.h>
129
130#ifndef NBBY
131#define NBBY	8
132#endif
133
134/* Doesn't exist on Android. */
135#define setprotoent(...)
136#define endprotoent(...)
137
138#endif /* WIN32 */
139
140#ifndef HAVE___ATTRIBUTE__
141#define __attribute__(x)
142#endif
143
144/*
145 * Used to declare a structure unaligned, so that the C compiler,
146 * if necessary, generates code that doesn't assume alignment.
147 * This is required because there is no guarantee that the packet
148 * data we get from libpcap/WinPcap is properly aligned.
149 *
150 * This assumes that, for all compilers that support __attribute__:
151 *
152 *	1) they support __attribute__((packed));
153 *
154 *	2) for all instruction set architectures requiring strict
155 *	   alignment, declaring a structure with that attribute
156 *	   causes the compiler to generate code that handles
157 *	   misaligned 2-byte, 4-byte, and 8-byte integral
158 *	   quantities.
159 *
160 * It does not (yet) handle compilers where you can get the compiler
161 * to generate code of that sort by some other means.
162 *
163 * This is required in order to, for example, keep the compiler from
164 * generating, for
165 *
166 *	if (bp->bp_htype == 1 && bp->bp_hlen == 6 && bp->bp_op == BOOTPREQUEST) {
167 *
168 * in print-bootp.c, code that loads the first 4-byte word of a
169 * "struct bootp", masking out the bp_hops field, and comparing the result
170 * against 0x01010600.
171 *
172 * Note: this also requires that padding be put into the structure,
173 * at least for compilers where it's implemented as __attribute__((packed)).
174 */
175#if defined(_MSC_VER) && defined(UNALIGNED)
176/* MSVC may have its own macro defined with the same name and purpose. */
177#else
178#define UNALIGNED	__attribute__((packed))
179#endif
180
181#if defined(WIN32) || defined(MSDOS)
182  #define FOPEN_READ_TXT   "rt"
183  #define FOPEN_READ_BIN   "rb"
184  #define FOPEN_WRITE_TXT  "wt"
185  #define FOPEN_WRITE_BIN  "wb"
186#else
187  #define FOPEN_READ_TXT   "r"
188  #define FOPEN_READ_BIN   FOPEN_READ_TXT
189  #define FOPEN_WRITE_TXT  "w"
190  #define FOPEN_WRITE_BIN  FOPEN_WRITE_TXT
191#endif
192
193#if defined(__GNUC__) && defined(__i386__) && !defined(__APPLE__) && !defined(__ntohl)
194  #undef ntohl
195  #undef ntohs
196  #undef htonl
197  #undef htons
198
199  static __inline__ unsigned long __ntohl (unsigned long x);
200  static __inline__ unsigned short __ntohs (unsigned short x);
201
202  #define ntohl(x)  __ntohl(x)
203  #define ntohs(x)  __ntohs(x)
204  #define htonl(x)  __ntohl(x)
205  #define htons(x)  __ntohs(x)
206
207  static __inline__ unsigned long __ntohl (unsigned long x)
208  {
209    __asm__ ("xchgb %b0, %h0\n\t"   /* swap lower bytes  */
210             "rorl  $16, %0\n\t"    /* swap words        */
211             "xchgb %b0, %h0"       /* swap higher bytes */
212            : "=q" (x) : "0" (x));
213    return (x);
214  }
215
216  static __inline__ unsigned short __ntohs (unsigned short x)
217  {
218    __asm__ ("xchgb %b0, %h0"       /* swap bytes */
219            : "=q" (x) : "0" (x));
220    return (x);
221  }
222#endif
223
224#ifndef INET_ADDRSTRLEN
225#define INET_ADDRSTRLEN 16
226#endif
227
228#ifndef TRUE
229#define TRUE 1
230#endif
231
232#ifndef FALSE
233#define FALSE 0
234#endif
235
236/*
237 * The Apple deprecation workaround macros below were adopted from the
238 * FreeRADIUS server code under permission of Alan DeKok and Arran Cudbard-Bell.
239 */
240
241#define XSTRINGIFY(x) #x
242
243/*
244 *	Macros for controlling warnings in GCC >= 4.2 and clang >= 2.8
245 */
246#define DIAG_JOINSTR(x,y) XSTRINGIFY(x ## y)
247#define DIAG_DO_PRAGMA(x) _Pragma (#x)
248
249#if defined(__GNUC__) && ((__GNUC__ * 100) + __GNUC_MINOR__) >= 402
250#  define DIAG_PRAGMA(x) DIAG_DO_PRAGMA(GCC diagnostic x)
251#  if ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406
252#    define DIAG_OFF(x) DIAG_PRAGMA(push) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x))
253#    define DIAG_ON(x) DIAG_PRAGMA(pop)
254#  else
255#    define DIAG_OFF(x) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x))
256#    define DIAG_ON(x)  DIAG_PRAGMA(warning DIAG_JOINSTR(-W,x))
257#  endif
258#elif defined(__clang__) && ((__clang_major__ * 100) + __clang_minor__ >= 208)
259#  define DIAG_PRAGMA(x) DIAG_DO_PRAGMA(clang diagnostic x)
260#  define DIAG_OFF(x) DIAG_PRAGMA(push) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x))
261#  define DIAG_ON(x) DIAG_PRAGMA(pop)
262#else
263#  define DIAG_OFF(x)
264#  define DIAG_ON(x)
265#endif
266
267/*
268 *	For dealing with APIs which are only deprecated in OSX (like the OpenSSL API)
269 */
270#ifdef __APPLE__
271#  define USES_APPLE_DEPRECATED_API DIAG_OFF(deprecated-declarations)
272#  define USES_APPLE_RST DIAG_ON(deprecated-declarations)
273#else
274#  define USES_APPLE_DEPRECATED_API
275#  define USES_APPLE_RST
276#endif
277
278/*
279 * end of Apple deprecation workaround macros
280 */
281
282#endif /* tcpdump_stdinc_h */
283