/* * 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 /* * Get the C99 types, and the PRI[doux]64 format strings, defined. */ #ifdef HAVE_PCAP_PCAP_INTTYPES_H /* * We have pcap/pcap-inttypes.h; use that, as it'll do all the * work, and won't cause problems if a file includes this file * and later includes a pcap header file that also includes * pcap/pcap-inttypes.h. */ #include #else /* * OK, we don't have pcap/pcap-inttypes.h, so we'll have to * do the work ourselves, but at least we don't have to * worry about other headers including it and causing * clashes. */ #if defined(_MSC_VER) /* * Compiler is MSVC. */ #if _MSC_VER >= 1800 /* * VS 2013 or newer; we have . */ #include #else /* * Earlier VS; we have to define this stuff ourselves. */ typedef unsigned char uint8_t; typedef signed char int8_t; typedef unsigned short uint16_t; typedef signed short int16_t; typedef unsigned int uint32_t; typedef signed int int32_t; #ifdef _MSC_EXTENSIONS typedef unsigned _int64 uint64_t; typedef _int64 int64_t; #else /* _MSC_EXTENSIONS */ typedef unsigned long long uint64_t; typedef long long int64_t; #endif #endif /* * Suppress definition of intN_t in bittypes.h, which might be included * by in older versions of WinPcap. * (Yes, HAVE_U_INTn_T, as the definition guards are UN*X-oriented, and * we check for u_intN_t in the UN*X configure script.) */ #define HAVE_U_INT8_T #define HAVE_U_INT16_T #define HAVE_U_INT32_T #define HAVE_U_INT64_T /* * These may be defined by . If not, define them * ourselves. * * XXX - for MSVC, we always want the _MSC_EXTENSIONS versions. * What about other compilers? If, as the MinGW Web site says MinGW * does, the other compilers just use Microsoft's run-time library, * then they should probably use the _MSC_EXTENSIONS even if the * compiler doesn't define _MSC_EXTENSIONS. */ #ifndef PRId64 #ifdef _MSC_EXTENSIONS #define PRId64 "I64d" #else #define PRId64 "lld" #endif #endif /* PRId64 */ #ifndef PRIo64 #ifdef _MSC_EXTENSIONS #define PRIo64 "I64o" #else #define PRIo64 "llo" #endif #endif /* PRIo64 */ #ifndef PRIx64 #ifdef _MSC_EXTENSIONS #define PRIx64 "I64x" #else #define PRIx64 "llx" #endif #endif #ifndef PRIu64 #ifdef _MSC_EXTENSIONS #define PRIu64 "I64u" #else #define PRIu64 "llu" #endif #endif #elif defined(__MINGW32__) || !defined(_WIN32) /* * Compiler is MinGW or target is UN*X or MS-DOS. Just use * . */ #include #endif #endif /* HAVE_PCAP_PCAP_INTTYPES_H */ #ifdef _WIN32 /* * Includes and definitions for Windows. */ #include #include #include #include #include #include #include #include #ifdef _MSC_VER /* * Compiler is MSVC. * * Microsoft's documentation doesn't speak of LL as a valid * suffix for 64-bit integers, so we'll just use i64. */ #define INT64_T_CONSTANT(constant) (constant##i64) #else /* * Non-Microsoft compiler; assume LL works. */ #define INT64_T_CONSTANT(constant) (constant##LL) #endif #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 */ /* * With MSVC, for C, __inline is used to make a function an inline. */ #ifdef _MSC_VER #define inline __inline #endif #ifdef AF_INET6 #define HAVE_OS_IPV6_SUPPORT #endif #ifndef INET6_ADDRSTRLEN #define INET6_ADDRSTRLEN 46 #endif /* It is in MSVC's , 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 #else /* _WIN32 */ /* * Includes and definitions for various flavors of UN*X. */ #include #include #include #include #include /* concession to AIX */ #include #include #include #include #include /* * Assume LL works. */ #define INT64_T_CONSTANT(constant) (constant##LL) #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 #ifndef AF_INET6 #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 #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 */ /* * Function attributes, for various compilers. */ #include "funcattrs.h" #ifndef min #define min(a,b) ((a)>(b)?(b):(a)) #endif #ifndef max #define max(a,b) ((b)>(a)?(b):(a)) #endif #ifdef __ATTRIBUTE___FALLTHROUGH_OK # define ND_FALL_THROUGH __attribute__ ((fallthrough)) #else # define ND_FALL_THROUGH #endif /* __ATTRIBUTE___FALLTHROUGH_OK */ #endif /* netdissect_stdinc_h */