/* * Copyright (c) 1994, 1995, 1996 * The Regents of the University of California. 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the Computer Systems * Engineering Group at Lawrence Berkeley Laboratory. * 4. Neither the name of the University nor of the Laboratory may be used * to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. */ #ifndef portability_h #define portability_h /* * Helpers for portability between Windows and UN*X and between different * flavors of UN*X. */ #include <stdarg.h> /* we declare varargs functions on some platforms */ #include "pcap/funcattrs.h" #ifdef __cplusplus extern "C" { #endif #ifdef HAVE_STRLCAT #define pcap_strlcat strlcat #else #if defined(_MSC_VER) || defined(__MINGW32__) /* * strncat_s() is supported at least back to Visual * Studio 2005. */ #define pcap_strlcat(x, y, z) \ strncat_s((x), (z), (y), _TRUNCATE) #else /* * Define it ourselves. */ extern size_t pcap_strlcat(char * restrict dst, const char * restrict src, size_t dstsize); #endif #endif #ifdef HAVE_STRLCPY #define pcap_strlcpy strlcpy #else #if defined(_MSC_VER) || defined(__MINGW32__) /* * strncpy_s() is supported at least back to Visual * Studio 2005. */ #define pcap_strlcpy(x, y, z) \ strncpy_s((x), (z), (y), _TRUNCATE) #else /* * Define it ourselves. */ extern size_t pcap_strlcpy(char * restrict dst, const char * restrict src, size_t dstsize); #endif #endif #ifdef _MSC_VER #define isascii __isascii /* * 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 #endif /* * On Windows, snprintf(), with that name and with C99 behavior - i.e., * guaranteeing that the formatted string is null-terminated - didn't * appear until Visual Studio 2015. Prior to that, the C runtime had * only _snprintf(), which *doesn't* guarantee that the string is * null-terminated if it is truncated due to the buffer being too * small. We therefore can't just define snprintf to be _snprintf * and define vsnprintf to be _vsnprintf, as we're relying on null- * termination of strings in all cases. * * We also want to allow this to be built with versions of Visual Studio * prior to VS 2015, so we can't rely on snprintf() being present. * * And we want to make sure that, if we support plugins in the future, * a routine with C99 snprintf() behavior will be available to them. * We also don't want it to collide with the C library snprintf() if * there is one. * * So we make pcap_snprintf() and pcap_vsnprintf() available, either by * #defining them to be snprintf or vsnprintf, respectively, or by * defining our own versions and exporting them. */ #ifdef HAVE_SNPRINTF #define pcap_snprintf snprintf #else extern int pcap_snprintf(char *, size_t, PCAP_FORMAT_STRING(const char *), ...) PCAP_PRINTFLIKE(3, 4); #endif #ifdef HAVE_VSNPRINTF #define pcap_vsnprintf vsnprintf #else extern int pcap_vsnprintf(char *, size_t, const char *, va_list ap); #endif /* * We also want asprintf(), for some cases where we use it to construct * dynamically-allocated variable-length strings. */ #ifdef HAVE_ASPRINTF #define pcap_asprintf asprintf #else extern int pcap_asprintf(char **, PCAP_FORMAT_STRING(const char *), ...) PCAP_PRINTFLIKE(2, 3); #endif #ifdef HAVE_VASPRINTF #define pcap_vasprintf vasprintf #else extern int pcap_vasprintf(char **, const char *, va_list ap); #endif #ifdef HAVE_STRTOK_R #define pcap_strtok_r strtok_r #else #ifdef _WIN32 /* * Microsoft gives it a different name. */ #define pcap_strtok_r strtok_s #else /* * Define it ourselves. */ extern char *pcap_strtok_r(char *, const char *, char **); #endif #endif /* HAVE_STRTOK_R */ #ifdef _WIN32 #if !defined(__cplusplus) #define inline __inline #endif #endif /* _WIN32 */ #ifdef __cplusplus } #endif #endif