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/*
33 * Include the appropriate OS header files on Windows and various flavors
34 * of UNIX, include various non-OS header files on Windows, and define
35 * various items as needed, to isolate most of tcpdump's platform
36 * differences to this one file.
37 */
38
39#ifndef tcpdump_stdinc_h
40#define tcpdump_stdinc_h
41
42#include <errno.h>
43
44#ifdef WIN32
45
46#include <stdint.h>
47#include <stdio.h>
48#include <winsock2.h>
49#include <ws2tcpip.h>
50#include "bittypes.h"   /* in wpcap's Win32/include */
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 uint8_t
59#define uint8_t		unsigned char
60#endif
61
62#ifndef int8_t
63#define int8_t		signed char
64#endif
65
66#ifndef uint16_t
67#define uint16_t	unsigned short
68#endif
69
70#ifndef int16_t
71#define int16_t		signed short
72#endif
73
74#ifndef uint32_t
75#define uint32_t	unsigned int
76#endif
77
78#ifndef int32_t
79#define int32_t		signed int
80#endif
81
82#ifdef _MSC_EXTENSIONS
83
84#ifndef uint64_t
85#define uint64_t	unsigned _int64
86#endif
87
88#ifndef int64_t
89#define int64_t		_int64
90#endif
91
92#ifndef PRId64
93#define PRId64		"I64d"
94#endif
95
96#ifndef PRIo64
97#define PRIo64		"I64o"
98#endif
99
100#ifndef PRIu64
101#define PRIu64		"I64u"
102#endif
103
104#ifndef PRIx64
105#define PRIx64		"I64x"
106#endif
107
108#else /* _MSC_EXTENSIONS */
109
110#ifndef uint64_t
111#define uint64_t	unsigned long long
112#endif
113
114#ifndef int64_t
115#define int64_t		long long
116#endif
117
118#ifndef PRId64
119#define PRId64		"lld"
120#endif
121
122#ifndef PRIo64
123#define PRIo64		"llo"
124#endif
125
126#ifndef PRIu64
127#define PRIu64		"llu"
128#endif
129
130#ifndef PRIx64
131#define PRIx64		"llx"
132#endif
133
134#endif /* _MSC_EXTENSIONS */
135
136#ifdef _MSC_VER
137#define stat _stat
138#define open _open
139#define fstat _fstat
140#define read _read
141#define close _close
142#define O_RDONLY _O_RDONLY
143#endif  /* _MSC_VER */
144
145/* Protos for missing/x.c functions (ideally <missing/addrinfo.h>
146 * should be used, but it clashes with <ws2tcpip.h>).
147 */
148extern const char *inet_ntop (int, const void *, char *, size_t);
149extern int inet_pton (int, const char *, void *);
150extern int inet_aton (const char *cp, struct in_addr *addr);
151
152/*
153 * With MSVC, for C, __inline is used to make a function an inline.
154 */
155#ifdef _MSC_VER
156#define inline __inline
157#endif
158
159#ifndef INET6_ADDRSTRLEN
160#define INET6_ADDRSTRLEN 46
161#endif
162
163/* It is in MSVC's <errno.h>, but not defined in MingW+Watcom.
164 */
165#ifndef EAFNOSUPPORT
166#define EAFNOSUPPORT WSAEAFNOSUPPORT
167#endif
168
169#ifndef caddr_t
170typedef char* caddr_t;
171#endif /* caddr_t */
172
173#define MAXHOSTNAMELEN	64
174#define	NI_MAXHOST	1025
175#define snprintf _snprintf
176#define vsnprintf _vsnprintf
177#define RETSIGTYPE void
178
179#else /* WIN32 */
180
181#include <ctype.h>
182#include <unistd.h>
183#include <netdb.h>
184#if HAVE_INTTYPES_H
185#include <inttypes.h>
186#elif HAVE_STDINT_H
187#include <stdint.h>
188#endif
189#include <sys/param.h>
190#include <sys/types.h>			/* concession to AIX */
191#include <sys/time.h>
192#include <sys/socket.h>
193#include <netinet/in.h>
194
195#ifdef TIME_WITH_SYS_TIME
196#include <time.h>
197#endif
198
199#include <arpa/inet.h>
200
201#endif /* WIN32 */
202
203#ifndef HAVE___ATTRIBUTE__
204#define __attribute__(x)
205#endif
206
207/*
208 * Used to declare a structure unaligned, so that the C compiler,
209 * if necessary, generates code that doesn't assume alignment.
210 * This is required because there is no guarantee that the packet
211 * data we get from libpcap/WinPcap is properly aligned.
212 *
213 * This assumes that, for all compilers that support __attribute__:
214 *
215 *	1) they support __attribute__((packed));
216 *
217 *	2) for all instruction set architectures requiring strict
218 *	   alignment, declaring a structure with that attribute
219 *	   causes the compiler to generate code that handles
220 *	   misaligned 2-byte, 4-byte, and 8-byte integral
221 *	   quantities.
222 *
223 * It does not (yet) handle compilers where you can get the compiler
224 * to generate code of that sort by some other means.
225 *
226 * This is required in order to, for example, keep the compiler from
227 * generating, for
228 *
229 *	if (bp->bp_htype == 1 && bp->bp_hlen == 6 && bp->bp_op == BOOTPREQUEST) {
230 *
231 * in print-bootp.c, code that loads the first 4-byte word of a
232 * "struct bootp", masking out the bp_hops field, and comparing the result
233 * against 0x01010600.
234 *
235 * Note: this also requires that padding be put into the structure,
236 * at least for compilers where it's implemented as __attribute__((packed)).
237 */
238#if !(defined(_MSC_VER) && defined(UNALIGNED))
239/* MSVC may have its own macro defined with the same name and purpose. */
240#undef UNALIGNED
241#define UNALIGNED	__attribute__((packed))
242#endif
243
244#if defined(WIN32) || defined(MSDOS)
245  #define FOPEN_READ_TXT   "rt"
246  #define FOPEN_READ_BIN   "rb"
247  #define FOPEN_WRITE_TXT  "wt"
248  #define FOPEN_WRITE_BIN  "wb"
249#else
250  #define FOPEN_READ_TXT   "r"
251  #define FOPEN_READ_BIN   FOPEN_READ_TXT
252  #define FOPEN_WRITE_TXT  "w"
253  #define FOPEN_WRITE_BIN  FOPEN_WRITE_TXT
254#endif
255
256#if defined(__GNUC__) && defined(__i386__) && !defined(__APPLE__) && !defined(__ntohl)
257  #undef ntohl
258  #undef ntohs
259  #undef htonl
260  #undef htons
261
262  static __inline__ unsigned long __ntohl (unsigned long x);
263  static __inline__ unsigned short __ntohs (unsigned short x);
264
265  #define ntohl(x)  __ntohl(x)
266  #define ntohs(x)  __ntohs(x)
267  #define htonl(x)  __ntohl(x)
268  #define htons(x)  __ntohs(x)
269
270  static __inline__ unsigned long __ntohl (unsigned long x)
271  {
272    __asm__ ("xchgb %b0, %h0\n\t"   /* swap lower bytes  */
273             "rorl  $16, %0\n\t"    /* swap words        */
274             "xchgb %b0, %h0"       /* swap higher bytes */
275            : "=q" (x) : "0" (x));
276    return (x);
277  }
278
279  static __inline__ unsigned short __ntohs (unsigned short x)
280  {
281    __asm__ ("xchgb %b0, %h0"       /* swap bytes */
282            : "=q" (x) : "0" (x));
283    return (x);
284  }
285#endif
286
287#ifndef INET_ADDRSTRLEN
288#define INET_ADDRSTRLEN 16
289#endif
290
291#ifndef TRUE
292#define TRUE 1
293#endif
294
295#ifndef FALSE
296#define FALSE 0
297#endif
298
299/*
300 * The Apple deprecation workaround macros below were adopted from the
301 * FreeRADIUS server code under permission of Alan DeKok and Arran Cudbard-Bell.
302 */
303
304#define XSTRINGIFY(x) #x
305
306/*
307 *	Macros for controlling warnings in GCC >= 4.2 and clang >= 2.8
308 */
309#define DIAG_JOINSTR(x,y) XSTRINGIFY(x ## y)
310#define DIAG_DO_PRAGMA(x) _Pragma (#x)
311
312#if defined(__GNUC__) && ((__GNUC__ * 100) + __GNUC_MINOR__) >= 402
313#  define DIAG_PRAGMA(x) DIAG_DO_PRAGMA(GCC diagnostic x)
314#  if ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406
315#    define DIAG_OFF(x) DIAG_PRAGMA(push) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x))
316#    define DIAG_ON(x) DIAG_PRAGMA(pop)
317#  else
318#    define DIAG_OFF(x) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x))
319#    define DIAG_ON(x)  DIAG_PRAGMA(warning DIAG_JOINSTR(-W,x))
320#  endif
321#elif defined(__clang__) && ((__clang_major__ * 100) + __clang_minor__ >= 208)
322#  define DIAG_PRAGMA(x) DIAG_DO_PRAGMA(clang diagnostic x)
323#  define DIAG_OFF(x) DIAG_PRAGMA(push) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x))
324#  define DIAG_ON(x) DIAG_PRAGMA(pop)
325#else
326#  define DIAG_OFF(x)
327#  define DIAG_ON(x)
328#endif
329
330/*
331 *	For dealing with APIs which are only deprecated in OSX (like the OpenSSL API)
332 */
333#ifdef __APPLE__
334#  define USES_APPLE_DEPRECATED_API DIAG_OFF(deprecated-declarations)
335#  define USES_APPLE_RST DIAG_ON(deprecated-declarations)
336#else
337#  define USES_APPLE_DEPRECATED_API
338#  define USES_APPLE_RST
339#endif
340
341/*
342 * end of Apple deprecation workaround macros
343 */
344
345#ifndef min
346#define min(a,b) ((a)>(b)?(b):(a))
347#endif
348#ifndef max
349#define max(a,b) ((b)>(a)?(b):(a))
350#endif
351
352#endif /* tcpdump_stdinc_h */
353