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Diffstat (limited to 'lib/libpcap/libpcap/portability.h')
-rw-r--r-- | lib/libpcap/libpcap/portability.h | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/lib/libpcap/libpcap/portability.h b/lib/libpcap/libpcap/portability.h new file mode 100644 index 0000000..543846e --- /dev/null +++ b/lib/libpcap/libpcap/portability.h @@ -0,0 +1,177 @@ +/* + * 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 |