1/* 2 * Copyright (c) 2007 Apple Inc. All rights reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this 11 * file. 12 * 13 * The Original Code and all software distributed under the License are 14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 18 * Please see the License for the specific language governing rights and 19 * limitations under the License. 20 * 21 * @APPLE_LICENSE_HEADER_END@ 22 */ 23 24#ifndef _STRING_H_ 25# error "Never use <secure/_string.h> directly; include <string.h> instead." 26#endif 27 28#ifndef _SECURE__STRING_H_ 29#define _SECURE__STRING_H_ 30 31#include <Availability.h> 32#include <sys/cdefs.h> 33#include <secure/_common.h> 34 35#if _USE_FORTIFY_LEVEL > 0 36 37#ifndef __has_builtin 38#define _undef__has_builtin 39#define __has_builtin(x) 0 40#endif 41 42/* <rdar://problem/12622659> */ 43#if defined(__clang__) && \ 44 ((defined(__apple_build_version__) && __apple_build_version__ >= 4260006) || \ 45 (!defined(__apple_build_version__) && (__clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 3)))) 46#define __HAS_FIXED_CHK_PROTOTYPES 1 47#else 48#define __HAS_FIXED_CHK_PROTOTYPES 0 49#endif 50 51/* memccpy, memcpy, mempcpy, memmove, memset, strcpy, strlcpy, stpcpy, 52 strncpy, stpncpy, strcat, strlcat, and strncat */ 53 54#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000 || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090 55#if __has_builtin(__builtin___memccpy_chk) && __HAS_FIXED_CHK_PROTOTYPES 56#undef memccpy 57#define memccpy(dest, src, c, len) \ 58 __builtin___memccpy_chk (dest, src, c, len, __darwin_obsz0 (dest)) 59#endif 60#endif 61 62#if __has_builtin(__builtin___memcpy_chk) || defined(__GNUC__) 63#undef memcpy 64#define memcpy(dest, src, len) \ 65 __builtin___memcpy_chk (dest, src, len, __darwin_obsz0 (dest)) 66#endif 67 68#if __has_builtin(__builtin___memmove_chk) || defined(__GNUC__) 69#undef memmove 70#define memmove(dest, src, len) \ 71 __builtin___memmove_chk (dest, src, len, __darwin_obsz0 (dest)) 72#endif 73 74#if __has_builtin(__builtin___memset_chk) || defined(__GNUC__) 75#undef memset 76#define memset(dest, val, len) \ 77 __builtin___memset_chk (dest, val, len, __darwin_obsz0 (dest)) 78#endif 79 80#if __has_builtin(__builtin___strcpy_chk) || defined(__GNUC__) 81#undef strcpy 82#define strcpy(dest, src) \ 83 __builtin___strcpy_chk (dest, src, __darwin_obsz (dest)) 84#endif 85 86#if __DARWIN_C_LEVEL >= 200809L 87#if __has_builtin(__builtin___stpcpy_chk) || defined(__GNUC__) 88#undef stpcpy 89#define stpcpy(dest, src) \ 90 __builtin___stpcpy_chk (dest, src, __darwin_obsz (dest)) 91#endif 92 93#if __has_builtin(__builtin___stpncpy_chk) || __APPLE_CC__ >= 5666 || __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7) 94#undef stpncpy 95#define stpncpy(dest, src, len) \ 96 __builtin___stpncpy_chk (dest, src, len, __darwin_obsz (dest)) 97#endif 98#endif /* _DARWIN_C_LEVEL >= 200809L */ 99 100#if __DARWIN_C_LEVEL >= __DARWIN_C_FULL 101#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000 || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090 102#if __has_builtin(__builtin___strlcpy_chk) && __HAS_FIXED_CHK_PROTOTYPES 103#undef strlcpy 104#define strlcpy(dest, src, len) \ 105 __builtin___strlcpy_chk (dest, src, len, __darwin_obsz (dest)) 106#endif 107 108#if __has_builtin(__builtin___strlcat_chk) && __HAS_FIXED_CHK_PROTOTYPES 109#undef strlcat 110#define strlcat(dest, src, len) \ 111 __builtin___strlcat_chk (dest, src, len, __darwin_obsz (dest)) 112#endif 113#endif /* __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000 || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090 */ 114#endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */ 115 116#if __has_builtin(__builtin___strncpy_chk) || defined(__GNUC__) 117#undef strncpy 118#define strncpy(dest, src, len) \ 119 __builtin___strncpy_chk (dest, src, len, __darwin_obsz (dest)) 120#endif 121 122#if __has_builtin(__builtin___strcat_chk) || defined(__GNUC__) 123#undef strcat 124#define strcat(dest, src) \ 125 __builtin___strcat_chk (dest, src, __darwin_obsz (dest)) 126#endif 127 128#if ! (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < 32000) 129#if __has_builtin(__builtin___strncat_chk) || defined(__GNUC__) 130#undef strncat 131#define strncat(dest, src, len) \ 132 __builtin___strncat_chk (dest, src, len, __darwin_obsz (dest)) 133#endif 134#endif 135 136#ifdef _undef__has_builtin 137#undef _undef__has_builtin 138#undef __has_builtin 139#endif 140 141#undef __HAS_FIXED_CHK_PROTOTYPES 142 143#endif /* _USE_FORTIFY_LEVEL > 0 */ 144#endif /* _SECURE__STRING_H_ */ 145