| /* |
| * 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 "pcap/funcattrs.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #ifndef HAVE_STRLCPY |
| /* |
| * Macro that does the same thing as strlcpy(). |
| */ |
| #if defined(_MSC_VER) || defined(__MINGW32__) |
| /* |
| * strncpy_s() is supported at least back to Visual |
| * Studio 2005. |
| */ |
| #define strlcpy(x, y, z) \ |
| strncpy_s((x), (z), (y), _TRUNCATE) |
| |
| #else |
| #define strlcpy(x, y, z) \ |
| (strncpy((x), (y), (z)), \ |
| ((z) <= 0 ? 0 : ((x)[(z) - 1] = '\0')), \ |
| (void) strlen((y))) |
| #endif |
| #endif |
| |
| #ifndef HAVE_STRLCAT |
| /* |
| * Macro that does the same thing as strlcat(). |
| */ |
| #if defined(_MSC_VER) || defined(__MINGW32__) |
| /* |
| * strncat_s() is supported at least back to Visual |
| * Studio 2005. |
| */ |
| #define strlcat(x, y, z) \ |
| strncat_s((x), (z), (y), _TRUNCATE) |
| #else |
| /* |
| * ANSI C says strncat() always null-terminates its first argument, |
| * so 1) we don't need to explicitly null-terminate the string |
| * ourselves and 2) we need to leave room for the null terminator. |
| */ |
| #define strlcat(x, y, z) \ |
| strncat((x), (y), (z) - strlen((x)) - 1) |
| #endif |
| #endif |
| |
| #ifdef _MSC_VER |
| /* |
| * 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 |
| |
| #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. |
| */ |
| #define NEED_STRTOK_R |
| 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 |