Adding upstream version 4.99.4.upstream/4.99.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 382 insertions, 0 deletions

diff --git a/netdissect-stdinc.h b/netdissect-stdinc.h
new file mode 100644
index 0000000..e81c90b
--- /dev/null
+++ b/netdissect-stdinc.h
@@ -0,0 +1,382 @@
+/*
+ * 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 "ftmacros.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 read _read
+  #define close _close
+  #define O_RDONLY _O_RDONLY
+
+  /*
+   * We define our_fstat64 as _fstati64, and define our_statb as
+   * struct _stati64, so we get 64-bit file sizes.
+   */
+  #define our_fstat _fstati64
+  #define our_statb struct _stati64
+
+  /*
+   * 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>
+
+/*
+ * We should have large file support enabled, if it's available,
+ * so just use fstat as our_fstat and struct stat as our_statb.
+ */
+#define our_fstat fstat
+#define our_statb struct stat
+
+/*
+ * 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
+
+/*
+ * 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 */