_string.h (5479B) - Raw
1 /* 2 * Copyright (c) 2007,2017,2023 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 <sys/cdefs.h> 32 #include <Availability.h> 33 #include <secure/_common.h> 34 35 #if _USE_FORTIFY_LEVEL > 0 36 37 /* <rdar://problem/12622659> */ 38 #if defined(__clang__) && \ 39 ((defined(__apple_build_version__) && __apple_build_version__ >= 4260006) || \ 40 (!defined(__apple_build_version__) && (__clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 3)))) 41 #define __HAS_FIXED_CHK_PROTOTYPES 1 42 #else 43 #define __HAS_FIXED_CHK_PROTOTYPES 0 44 #endif 45 46 /* memccpy, memcpy, mempcpy, memmove, memset, strcpy, strlcpy, stpcpy, 47 strncpy, stpncpy, strcat, strlcat, and strncat */ 48 49 #if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000 || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090 || \ 50 defined(__DRIVERKIT_VERSION_MIN_REQUIRED) 51 #if __has_builtin(__builtin___memccpy_chk) && __HAS_FIXED_CHK_PROTOTYPES 52 #undef memccpy 53 /* void *memccpy(void *dst, const void *src, int c, size_t n) */ 54 #define memccpy(dest, ...) \ 55 __builtin___memccpy_chk (dest, __VA_ARGS__, __darwin_obsz0 (dest)) 56 #endif 57 #endif 58 59 #if __has_builtin(__builtin___memcpy_chk) || defined(__GNUC__) 60 #undef memcpy 61 /* void *memcpy(void *dst, const void *src, size_t n) */ 62 #define memcpy(dest, ...) \ 63 __builtin___memcpy_chk (dest, __VA_ARGS__, __darwin_obsz0 (dest)) 64 #endif 65 66 #if __has_builtin(__builtin___memmove_chk) || defined(__GNUC__) 67 #undef memmove 68 /* void *memmove(void *dst, const void *src, size_t len) */ 69 #define memmove(dest, ...) \ 70 __builtin___memmove_chk (dest, __VA_ARGS__, __darwin_obsz0 (dest)) 71 #endif 72 73 #if __has_builtin(__builtin___memset_chk) || defined(__GNUC__) 74 #undef memset 75 /* void *memset(void *b, int c, size_t len) */ 76 #define memset(dest, ...) \ 77 __builtin___memset_chk (dest, __VA_ARGS__, __darwin_obsz0 (dest)) 78 #endif 79 80 #if __has_builtin(__builtin___strcpy_chk) || defined(__GNUC__) 81 #undef strcpy 82 /* char *strcpy(char *dst, const char *src) */ 83 #define strcpy(dest, ...) \ 84 __builtin___strcpy_chk (dest, __VA_ARGS__, __darwin_obsz (dest)) 85 #endif 86 87 #if __DARWIN_C_LEVEL >= 200809L 88 #if __has_builtin(__builtin___stpcpy_chk) || defined(__GNUC__) 89 #undef stpcpy 90 /* char *stpcpy(char *dst, const char *src) */ 91 #define stpcpy(dest, ...) \ 92 __builtin___stpcpy_chk (dest, __VA_ARGS__, __darwin_obsz (dest)) 93 #endif 94 #endif /* __DARWIN_C_LEVEL >= 200809L */ 95 96 #if __DARWIN_C_LEVEL >= 200809L 97 #if __has_builtin(__builtin___stpncpy_chk) || __APPLE_CC__ >= 5666 || __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7) 98 #undef stpncpy 99 /* char *stpncpy(char *dst, const char *src, size_t n) */ 100 #define stpncpy(dest, ...) \ 101 __builtin___stpncpy_chk (dest, __VA_ARGS__, __darwin_obsz (dest)) 102 #endif 103 #endif /* _DARWIN_C_LEVEL >= 200809L */ 104 105 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL 106 #if __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000 || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090 || \ 107 defined(__DRIVERKIT_VERSION_MIN_REQUIRED) 108 #if __has_builtin(__builtin___strlcpy_chk) && __HAS_FIXED_CHK_PROTOTYPES 109 #undef strlcpy 110 /* size_t strlcpy(char *dst, const char *source, size_t size) */ 111 #define strlcpy(dest, ...) \ 112 __builtin___strlcpy_chk (dest, __VA_ARGS__, __darwin_obsz (dest)) 113 #endif 114 115 #if __has_builtin(__builtin___strlcat_chk) && __HAS_FIXED_CHK_PROTOTYPES 116 #undef strlcat 117 /* size_t strlcat(char *dst, const char *source, size_t size) */ 118 #define strlcat(dest, ...) \ 119 __builtin___strlcat_chk (dest, __VA_ARGS__, __darwin_obsz (dest)) 120 #endif 121 #endif /* __IPHONE_OS_VERSION_MIN_REQUIRED >= 70000 || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090 */ 122 #endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */ 123 124 #if __has_builtin(__builtin___strncpy_chk) || defined(__GNUC__) 125 #undef strncpy 126 /* char *strncpy(char *dst, const char *src, size_t n) */ 127 #define strncpy(dest, ...) \ 128 __builtin___strncpy_chk (dest, __VA_ARGS__, __darwin_obsz (dest)) 129 #endif 130 131 #if __has_builtin(__builtin___strcat_chk) || defined(__GNUC__) 132 #undef strcat 133 /* char *strcat(char *s1, const char *s2) */ 134 #define strcat(dest, ...) \ 135 __builtin___strcat_chk (dest, __VA_ARGS__, __darwin_obsz (dest)) 136 #endif 137 138 #if ! (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < 32000) 139 #if __has_builtin(__builtin___strncat_chk) || defined(__GNUC__) 140 #undef strncat 141 /* char *strncat(char *s1, const char *s2, size_t n) */ 142 #define strncat(dest, ...) \ 143 __builtin___strncat_chk (dest, __VA_ARGS__, __darwin_obsz (dest)) 144 #endif 145 #endif 146 147 #undef __HAS_FIXED_CHK_PROTOTYPES 148 149 #endif /* _USE_FORTIFY_LEVEL > 0 */ 150 #endif /* _SECURE__STRING_H_ */