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 netdissect's platform 36 * differences to this one file. 37 */ 38 39 #ifndef netdissect_stdinc_h 40 #define netdissect_stdinc_h 41 42 #include <errno.h> 43 44 #ifdef _WIN32 45 46 /* 47 * Includes and definitions for Windows. 48 */ 49 50 #include <stdint.h> 51 #include <stdio.h> 52 #include <winsock2.h> 53 #include <ws2tcpip.h> 54 #include <ctype.h> 55 #include <time.h> 56 #include <io.h> 57 #include <fcntl.h> 58 #include <sys/types.h> 59 60 #ifndef uint8_t 61 #define uint8_t unsigned char 62 #endif 63 64 #ifndef int8_t 65 #define int8_t signed char 66 #endif 67 68 #ifndef uint16_t 69 #define uint16_t unsigned short 70 #endif 71 72 #ifndef int16_t 73 #define int16_t signed short 74 #endif 75 76 #ifndef uint32_t 77 #define uint32_t unsigned int 78 #endif 79 80 #ifndef int32_t 81 #define int32_t signed int 82 #endif 83 84 #ifdef _MSC_EXTENSIONS 85 86 #ifndef uint64_t 87 #define uint64_t unsigned _int64 88 #endif 89 90 #ifndef int64_t 91 #define int64_t _int64 92 #endif 93 94 #ifndef PRId64 95 #define PRId64 "I64d" 96 #endif 97 98 #ifndef PRIo64 99 #define PRIo64 "I64o" 100 #endif 101 102 #ifndef PRIu64 103 #define PRIu64 "I64u" 104 #endif 105 106 #ifndef PRIx64 107 #define PRIx64 "I64x" 108 #endif 109 110 #else /* _MSC_EXTENSIONS */ 111 112 #ifndef uint64_t 113 #define uint64_t unsigned long long 114 #endif 115 116 #ifndef int64_t 117 #define int64_t long long 118 #endif 119 120 #ifndef PRId64 121 #define PRId64 "lld" 122 #endif 123 124 #ifndef PRIo64 125 #define PRIo64 "llo" 126 #endif 127 128 #ifndef PRIu64 129 #define PRIu64 "llu" 130 #endif 131 132 #ifndef PRIx64 133 #define PRIx64 "llx" 134 #endif 135 136 #endif /* _MSC_EXTENSIONS */ 137 138 /* 139 * Suppress definition of intN_t in bittypes.h, as included by <pcap/pcap.h> 140 * on Windows. 141 * (Yes, HAVE_U_INTn_T, as the definition guards are UN*X-oriented, and 142 * we check for u_intN_t in the UN*X configure script.) 143 */ 144 #define HAVE_U_INT8_T 145 #define HAVE_U_INT16_T 146 #define HAVE_U_INT32_T 147 #define HAVE_U_INT64_T 148 149 #ifdef _MSC_VER 150 #define stat _stat 151 #define open _open 152 #define fstat _fstat 153 #define read _read 154 #define close _close 155 #define O_RDONLY _O_RDONLY 156 #endif /* _MSC_VER */ 157 158 /* 159 * With MSVC, for C, __inline is used to make a function an inline. 160 */ 161 #ifdef _MSC_VER 162 #define inline __inline 163 #endif 164 165 #ifdef AF_INET6 166 #define HAVE_OS_IPV6_SUPPORT 167 #endif 168 169 #ifndef INET6_ADDRSTRLEN 170 #define INET6_ADDRSTRLEN 46 171 #endif 172 173 /* It is in MSVC's <errno.h>, but not defined in MingW+Watcom. 174 */ 175 #ifndef EAFNOSUPPORT 176 #define EAFNOSUPPORT WSAEAFNOSUPPORT 177 #endif 178 179 #ifndef caddr_t 180 typedef char* caddr_t; 181 #endif /* caddr_t */ 182 183 #define MAXHOSTNAMELEN 64 184 #define snprintf _snprintf 185 #define vsnprintf _vsnprintf 186 #define RETSIGTYPE void 187 188 #else /* _WIN32 */ 189 190 /* 191 * Includes and definitions for various flavors of UN*X. 192 */ 193 194 #include <ctype.h> 195 #include <unistd.h> 196 #include <netdb.h> 197 #if HAVE_INTTYPES_H 198 #include <inttypes.h> 199 #elif HAVE_STDINT_H 200 #include <stdint.h> 201 #endif 202 #include <sys/param.h> 203 #include <sys/types.h> /* concession to AIX */ 204 #include <sys/time.h> 205 #include <sys/socket.h> 206 #include <netinet/in.h> 207 208 #ifdef TIME_WITH_SYS_TIME 209 #include <time.h> 210 #endif 211 212 #include <arpa/inet.h> 213 214 #endif /* _WIN32 */ 215 216 #ifndef HAVE___ATTRIBUTE__ 217 #define __attribute__(x) 218 #endif 219 220 /* 221 * Used to declare a structure unaligned, so that the C compiler, 222 * if necessary, generates code that doesn't assume alignment. 223 * This is required because there is no guarantee that the packet 224 * data we get from libpcap/WinPcap is properly aligned. 225 * 226 * This assumes that, for all compilers that support __attribute__: 227 * 228 * 1) they support __attribute__((packed)); 229 * 230 * 2) for all instruction set architectures requiring strict 231 * alignment, declaring a structure with that attribute 232 * causes the compiler to generate code that handles 233 * misaligned 2-byte, 4-byte, and 8-byte integral 234 * quantities. 235 * 236 * It does not (yet) handle compilers where you can get the compiler 237 * to generate code of that sort by some other means. 238 * 239 * This is required in order to, for example, keep the compiler from 240 * generating, for 241 * 242 * if (bp->bp_htype == 1 && bp->bp_hlen == 6 && bp->bp_op == BOOTPREQUEST) { 243 * 244 * in print-bootp.c, code that loads the first 4-byte word of a 245 * "struct bootp", masking out the bp_hops field, and comparing the result 246 * against 0x01010600. 247 * 248 * Note: this also requires that padding be put into the structure, 249 * at least for compilers where it's implemented as __attribute__((packed)). 250 */ 251 #if !(defined(_MSC_VER) && defined(UNALIGNED)) 252 /* MSVC may have its own macro defined with the same name and purpose. */ 253 #undef UNALIGNED 254 #define UNALIGNED __attribute__((packed)) 255 #endif 256 257 /* 258 * fopen() read and write modes for text files and binary files. 259 */ 260 #if defined(_WIN32) || defined(MSDOS) 261 #define FOPEN_READ_TXT "rt" 262 #define FOPEN_READ_BIN "rb" 263 #define FOPEN_WRITE_TXT "wt" 264 #define FOPEN_WRITE_BIN "wb" 265 #else 266 #define FOPEN_READ_TXT "r" 267 #define FOPEN_READ_BIN FOPEN_READ_TXT 268 #define FOPEN_WRITE_TXT "w" 269 #define FOPEN_WRITE_BIN FOPEN_WRITE_TXT 270 #endif 271 272 /* 273 * Inline x86 assembler-language versions of ntoh[ls]() and hton[ls](), 274 * defined if the OS doesn't provide them. These assume no more than 275 * an 80386, so, for example, it avoids the bswap instruction added in 276 * the 80486. 277 * 278 * (We don't use them on OS X; Apple provides their own, which *doesn't* 279 * avoid the bswap instruction, as OS X only supports machines that 280 * have it.) 281 */ 282 #if defined(__GNUC__) && defined(__i386__) && !defined(__APPLE__) && !defined(__ntohl) 283 #undef ntohl 284 #undef ntohs 285 #undef htonl 286 #undef htons 287 288 static __inline__ unsigned long __ntohl (unsigned long x); 289 static __inline__ unsigned short __ntohs (unsigned short x); 290 291 #define ntohl(x) __ntohl(x) 292 #define ntohs(x) __ntohs(x) 293 #define htonl(x) __ntohl(x) 294 #define htons(x) __ntohs(x) 295 296 static __inline__ unsigned long __ntohl (unsigned long x) 297 { 298 __asm__ ("xchgb %b0, %h0\n\t" /* swap lower bytes */ 299 "rorl $16, %0\n\t" /* swap words */ 300 "xchgb %b0, %h0" /* swap higher bytes */ 301 : "=q" (x) : "0" (x)); 302 return (x); 303 } 304 305 static __inline__ unsigned short __ntohs (unsigned short x) 306 { 307 __asm__ ("xchgb %b0, %h0" /* swap bytes */ 308 : "=q" (x) : "0" (x)); 309 return (x); 310 } 311 #endif 312 313 /* 314 * If the OS doesn't define AF_INET6 and struct in6_addr: 315 * 316 * define AF_INET6, so we can use it internally as a "this is an 317 * IPv6 address" indication; 318 * 319 * define struct in6_addr so that we can use it for IPv6 addresses. 320 */ 321 #ifndef HAVE_OS_IPV6_SUPPORT 322 #ifndef AF_INET6 323 #define AF_INET6 24 324 325 struct in6_addr { 326 union { 327 __uint8_t __u6_addr8[16]; 328 __uint16_t __u6_addr16[8]; 329 __uint32_t __u6_addr32[4]; 330 } __u6_addr; /* 128-bit IP6 address */ 331 }; 332 #endif 333 #endif 334 335 #ifndef NI_MAXHOST 336 #define NI_MAXHOST 1025 337 #endif 338 339 #ifndef INET_ADDRSTRLEN 340 #define INET_ADDRSTRLEN 16 341 #endif 342 343 #ifndef TRUE 344 #define TRUE 1 345 #endif 346 347 #ifndef FALSE 348 #define FALSE 0 349 #endif 350 351 /* 352 * The Apple deprecation workaround macros below were adopted from the 353 * FreeRADIUS server code under permission of Alan DeKok and Arran Cudbard-Bell. 354 */ 355 356 #define XSTRINGIFY(x) #x 357 358 /* 359 * Macros for controlling warnings in GCC >= 4.2 and clang >= 2.8 360 */ 361 #define DIAG_JOINSTR(x,y) XSTRINGIFY(x ## y) 362 #define DIAG_DO_PRAGMA(x) _Pragma (#x) 363 364 #if defined(__GNUC__) && ((__GNUC__ * 100) + __GNUC_MINOR__) >= 402 365 # define DIAG_PRAGMA(x) DIAG_DO_PRAGMA(GCC diagnostic x) 366 # if ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406 367 # define DIAG_OFF(x) DIAG_PRAGMA(push) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x)) 368 # define DIAG_ON(x) DIAG_PRAGMA(pop) 369 # else 370 # define DIAG_OFF(x) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x)) 371 # define DIAG_ON(x) DIAG_PRAGMA(warning DIAG_JOINSTR(-W,x)) 372 # endif 373 #elif defined(__clang__) && ((__clang_major__ * 100) + __clang_minor__ >= 208) 374 # define DIAG_PRAGMA(x) DIAG_DO_PRAGMA(clang diagnostic x) 375 # define DIAG_OFF(x) DIAG_PRAGMA(push) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x)) 376 # define DIAG_ON(x) DIAG_PRAGMA(pop) 377 #else 378 # define DIAG_OFF(x) 379 # define DIAG_ON(x) 380 #endif 381 382 /* 383 * For dealing with APIs which are only deprecated in OSX (like the OpenSSL API) 384 */ 385 #ifdef __APPLE__ 386 # define USES_APPLE_DEPRECATED_API DIAG_OFF(deprecated-declarations) 387 # define USES_APPLE_RST DIAG_ON(deprecated-declarations) 388 #else 389 # define USES_APPLE_DEPRECATED_API 390 # define USES_APPLE_RST 391 #endif 392 393 /* 394 * end of Apple deprecation workaround macros 395 */ 396 397 /* 398 * Function attributes, for various compilers. 399 */ 400 #include "funcattrs.h" 401 402 #ifndef min 403 #define min(a,b) ((a)>(b)?(b):(a)) 404 #endif 405 #ifndef max 406 #define max(a,b) ((b)>(a)?(b):(a)) 407 #endif 408 409 #endif /* netdissect_stdinc_h */ 410
