| /* |
| * 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 <errno.h> |
| |
| #include "compiler-tests.h" |
| |
| #include "varattrs.h" |
| |
| /* |
| * If we're compiling with Visual Studio, make sure we have at least |
| * VS 2015 or later, so we have sufficient C99 support. |
| * |
| * XXX - verify that we have at least C99 support on UN*Xes? |
| * |
| * What about MinGW or various DOS toolchains? We're currently assuming |
| * sufficient C99 support there. |
| */ |
| #if defined(_MSC_VER) |
| /* |
| * Make sure we have VS 2015 or later. |
| */ |
| #if _MSC_VER < 1900 |
| #error "Building tcpdump requires VS 2015 or later" |
| #endif |
| #endif |
| |
| /* |
| * 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 <pcap/pcap-inttypes.h> |
| #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. |
| */ |
| |
| /* |
| * Include <inttypes.h> to get the integer types and PRi[doux]64 values |
| * defined. |
| * |
| * If the compiler is MSVC, we require VS 2015 or newer, so we |
| * have <inttypes.h> - and support for %zu in the formatted |
| * printing functions. |
| * |
| * If the compiler is MinGW, we assume we have <inttypes.h> - and |
| * support for %zu in the formatted printing functions. |
| * |
| * If the target is UN*X, we assume we have a C99-or-later development |
| * environment, and thus have <inttypes.h> - and support for %zu in |
| * the formatted printing functions. |
| * |
| * If the target is MS-DOS, we assume we have <inttypes.h> - and support |
| * for %zu in the formatted printing functions. |
| */ |
| #include <inttypes.h> |
| |
| #if defined(_MSC_VER) |
| /* |
| * Suppress definition of intN_t in bittypes.h, which might be included |
| * by <pcap/pcap.h> in older versions of WinPcap. |
| * (Yes, HAVE_U_INTn_T, as the definition guards are UN*X-oriented.) |
| */ |
| #define HAVE_U_INT8_T |
| #define HAVE_U_INT16_T |
| #define HAVE_U_INT32_T |
| #define HAVE_U_INT64_T |
| #endif |
| #endif /* HAVE_PCAP_PCAP_INTTYPES_H */ |
| |
| #ifdef _WIN32 |
| |
| /* |
| * Includes and definitions for Windows. |
| */ |
| |
| #include <stdio.h> |
| #include <winsock2.h> |
| #include <ws2tcpip.h> |
| #include <time.h> |
| #include <io.h> |
| #include <fcntl.h> |
| #include <sys/types.h> |
| |
| #ifdef _MSC_VER |
| /* |
| * Compiler is MSVC. |
| * |
| * We require VS 2015 or newer, so we have strtoll(). Use that for |
| * strtoint64_t(). |
| */ |
| #define strtoint64_t strtoll |
| |
| /* |
| * And we have LL as a suffix for constants, so use that. |
| */ |
| #define INT64_T_CONSTANT(constant) (constant##LL) |
| #else |
| /* |
| * Non-Microsoft compiler. |
| * |
| * XXX - should we use strtoll or should we use _strtoi64()? |
| */ |
| #define strtoint64_t strtoll |
| |
| /* |
| * Assume LL works. |
| */ |
| #define INT64_T_CONSTANT(constant) (constant##LL) |
| #endif |
| |
| #ifdef _MSC_VER |
| /* |
| * Microsoft tries to avoid polluting the C namespace with UN*Xisms, |
| * by adding a preceding underscore; we *want* the UN*Xisms, so add |
| * #defines to let us use them. |
| */ |
| #define isatty _isatty |
| #define stat _stat |
| #define strdup _strdup |
| #define open _open |
| #define fstat _fstat |
| #define read _read |
| #define close _close |
| #define O_RDONLY _O_RDONLY |
| |
| /* |
| * If <crtdbg.h> has been included, and _DEBUG is defined, and |
| * __STDC__ is zero, <crtdbg.h> will define strdup() to call |
| * _strdup_dbg(). So if it's already defined, don't redefine |
| * it. |
| */ |
| #ifndef strdup |
| #define strdup _strdup |
| #endif |
| |
| /* |
| * Windows doesn't have ssize_t; routines such as _read() return int. |
| */ |
| typedef int ssize_t; |
| #endif /* _MSC_VER */ |
| |
| /* |
| * With MSVC, for C, __inline is used to make a function an inline. |
| */ |
| #ifdef _MSC_VER |
| #define inline __inline |
| #endif |
| |
| #if defined(AF_INET6) && !defined(HAVE_OS_IPV6_SUPPORT) |
| #define HAVE_OS_IPV6_SUPPORT |
| #endif |
| |
| #ifndef INET6_ADDRSTRLEN |
| #define INET6_ADDRSTRLEN 46 |
| #endif |
| |
| /* It is in MSVC's <errno.h>, 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 |
| |
| #else /* _WIN32 */ |
| |
| /* |
| * Includes and definitions for various flavors of UN*X. |
| */ |
| |
| #include <unistd.h> |
| #include <netdb.h> |
| #include <sys/param.h> |
| #include <sys/types.h> /* concession to AIX */ |
| #include <sys/time.h> |
| #include <sys/socket.h> |
| #include <netinet/in.h> |
| |
| #include <time.h> |
| |
| #include <arpa/inet.h> |
| |
| /* |
| * Assume all UN*Xes have strtoll(), and use it for strtoint64_t(). |
| */ |
| #define strtoint64_t strtoll |
| |
| /* |
| * Assume LL works. |
| */ |
| #define INT64_T_CONSTANT(constant) (constant##LL) |
| |
| #endif /* _WIN32 */ |
| |
| /* |
| * Function attributes, for various compilers. |
| */ |
| #include "funcattrs.h" |
| |
| /* |
| * 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 macOS; Apple provides their own, which *doesn't* |
| * avoid the bswap instruction, as macOS 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) |
| |
| /* |
| * The current clang compilers also define __GNUC__ and __GNUC_MINOR__ |
| * thus we need to test the clang case before the GCC one |
| */ |
| #if defined(__clang__) |
| # if (__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 |
| #elif 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 |
| #else |
| # define DIAG_OFF(x) |
| # define DIAG_ON(x) |
| #endif |
| |
| /* Use for clang specific warnings */ |
| #ifdef __clang__ |
| # define DIAG_OFF_CLANG(x) DIAG_OFF(x) |
| # define DIAG_ON_CLANG(x) DIAG_ON(x) |
| #else |
| # define DIAG_OFF_CLANG(x) |
| # define DIAG_ON_CLANG(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 |
| */ |
| |
| /* |
| * Statement attributes, for various compilers. |
| * |
| * This was introduced sufficiently recently that compilers implementing |
| * it also implement __has_attribute() (for example, GCC 5.0 and later |
| * have __has_attribute(), and the "fallthrough" attribute was introduced |
| * in GCC 7). |
| * |
| * Unfortunately, Clang does this wrong - a statement |
| * |
| * __attribute__ ((fallthrough)); |
| * |
| * produces bogus -Wmissing-declaration "declaration does not declare |
| * anything" warnings (dear Clang: that's not a declaration, it's an |
| * empty statement). GCC, however, has no trouble with this. |
| */ |
| #if __has_attribute(fallthrough) && !defined(__clang__) |
| # define ND_FALL_THROUGH __attribute__ ((fallthrough)) |
| #else |
| # define ND_FALL_THROUGH |
| #endif /* __has_attribute(fallthrough) */ |
| |
| #endif /* netdissect_stdinc_h */ |