1 /* 2 * Copyright (c) 1994, 1995, 1996 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the Computer Systems 16 * Engineering Group at Lawrence Berkeley Laboratory. 17 * 4. Neither the name of the University nor of the Laboratory may be used 18 * to endorse or promote products derived from this software without 19 * specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef portability_h 35 #define portability_h 36 37 /* 38 * Helpers for portability between Windows and UN*X and between different 39 * flavors of UN*X. 40 */ 41 #include <stdarg.h> /* we declare varargs functions on some platforms */ 42 43 #include "pcap/funcattrs.h" 44 45 #ifdef __cplusplus 46 extern "C" { 47 #endif 48 49 #ifdef HAVE_STRLCAT 50 #define pcap_strlcat strlcat 51 #else 52 #if defined(_MSC_VER) || defined(__MINGW32__) 53 /* 54 * strncat_s() is supported at least back to Visual 55 * Studio 2005; we require Visual Studio 2015 or later. 56 */ 57 #define pcap_strlcat(x, y, z) \ 58 strncat_s((x), (z), (y), _TRUNCATE) 59 #else 60 /* 61 * Define it ourselves. 62 */ 63 extern size_t pcap_strlcat(char * restrict dst, const char * restrict src, size_t dstsize); 64 #endif 65 #endif 66 67 #ifdef HAVE_STRLCPY 68 #define pcap_strlcpy strlcpy 69 #else 70 #if defined(_MSC_VER) || defined(__MINGW32__) 71 /* 72 * strncpy_s() is supported at least back to Visual 73 * Studio 2005; we require Visual Studio 2015 or later. 74 */ 75 #define pcap_strlcpy(x, y, z) \ 76 strncpy_s((x), (z), (y), _TRUNCATE) 77 #else 78 /* 79 * Define it ourselves. 80 */ 81 extern size_t pcap_strlcpy(char * restrict dst, const char * restrict src, size_t dstsize); 82 #endif 83 #endif 84 85 #ifdef _MSC_VER 86 /* 87 * If <crtdbg.h> has been included, and _DEBUG is defined, and 88 * __STDC__ is zero, <crtdbg.h> will define strdup() to call 89 * _strdup_dbg(). So if it's already defined, don't redefine 90 * it. 91 */ 92 #ifndef strdup 93 #define strdup _strdup 94 #endif 95 #endif 96 97 /* 98 * We want asprintf(), for some cases where we use it to construct 99 * dynamically-allocated variable-length strings; it's present on 100 * some, but not all, platforms. 101 */ 102 #ifdef HAVE_ASPRINTF 103 #define pcap_asprintf asprintf 104 #else 105 extern int pcap_asprintf(char **, PCAP_FORMAT_STRING(const char *), ...) 106 PCAP_PRINTFLIKE(2, 3); 107 #endif 108 109 #ifdef HAVE_VASPRINTF 110 #define pcap_vasprintf vasprintf 111 #else 112 extern int pcap_vasprintf(char **, const char *, va_list ap); 113 #endif 114 115 /* For Solaris before 11. */ 116 #ifndef timeradd 117 #define timeradd(a, b, result) \ 118 do { \ 119 (result)->tv_sec = (a)->tv_sec + (b)->tv_sec; \ 120 (result)->tv_usec = (a)->tv_usec + (b)->tv_usec; \ 121 if ((result)->tv_usec >= 1000000) { \ 122 ++(result)->tv_sec; \ 123 (result)->tv_usec -= 1000000; \ 124 } \ 125 } while (0) 126 #endif /* timeradd */ 127 #ifndef timersub 128 #define timersub(a, b, result) \ 129 do { \ 130 (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ 131 (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ 132 if ((result)->tv_usec < 0) { \ 133 --(result)->tv_sec; \ 134 (result)->tv_usec += 1000000; \ 135 } \ 136 } while (0) 137 #endif /* timersub */ 138 139 #ifdef HAVE_STRTOK_R 140 #define pcap_strtok_r strtok_r 141 #else 142 #ifdef _WIN32 143 /* 144 * Microsoft gives it a different name. 145 */ 146 #define pcap_strtok_r strtok_s 147 #else 148 /* 149 * Define it ourselves. 150 */ 151 extern char *pcap_strtok_r(char *, const char *, char **); 152 #endif 153 #endif /* HAVE_STRTOK_R */ 154 155 #ifdef _WIN32 156 #if !defined(__cplusplus) 157 #define inline __inline 158 #endif 159 #endif /* _WIN32 */ 160 161 #ifdef __cplusplus 162 } 163 #endif 164 165 #endif 166