116 lines
2.6 KiB
C
116 lines
2.6 KiB
C
/*
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safe "string" functions
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This is for the "safe" clib functions, where things like "strcpy()" is
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replaced with a safer version of the function, like "safe_strcpy()".
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NOTE: I tried to based these on Microosft's `..._s()` functions proposed
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in Annex K, but it's become too hard trying to deal with both my own
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version and existing versions. Therefore, I've changed this code to
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use names not used by others.
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Reference:
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http://msdn.microsoft.com/en-us/library/bb288454.aspx
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*/
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#ifndef UTIL_SAFEFUNC_H
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#define UTIL_SAFEFUNC_H
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <stdint.h>
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#ifdef _MSC_VER
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#pragma warning(disable: 4996)
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#endif
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#undef strcpy
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#define strcpy STRCPY_FUNCTION_IS_BAD
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/*#undef strncpy
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#define strncpy STRNCPY_FUNCTION_IS_BAD*/
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#undef strcat
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#define strcat STRCAT_FUNCTION_IS_BAD
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#undef strncat
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#define strncat STRNCAT_FUNCTION_IS_BAD
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#undef sprintf
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#define sprintf SPRINTF_FUNCTION_IS_BAD
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#undef vsprintf
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#define vsprintf VSPRINTF_FUNCTION_IS_BAD
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#undef strtok
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#define strtok STRTOK_FUNCTION_IS_BAD
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#undef gets
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#define gets GETS_FUNCTION_IS_BAD
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#undef scanf
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#define scanf SCANF_FUNCTION_IS_BAD
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#undef sscanf
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#define sscanf SSCANF_FUNCTION_IS_BAD
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#undef itoa
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#define itoa ITOA_FUNCTION_IS_BAD
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/**
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* A bounds checking version of strcpy, like `strcpy_s()` on Windows or
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* `strlcpy()` in glibc.
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*/
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void safe_strcpy(char *dst, size_t sizeof_dst, const char *src);
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int safe_localtime(struct tm* _tm, const time_t *time);
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int safe_gmtime(struct tm* _tm, const time_t *time);
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#if defined(_MSC_VER) && (_MSC_VER >= 1900)
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/*Visual Studio 2015 and 2017*/
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# include <stdio.h>
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# include <string.h>
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# define strcasecmp _stricmp
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# define memcasecmp _memicmp
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# ifndef PRIu64
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# define PRIu64 "llu"
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# define PRId64 "lld"
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# define PRIx64 "llx"
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# endif
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#elif defined(_MSC_VER) && (_MSC_VER == 1600)
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/*Visual Studio 2010*/
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# include <stdio.h>
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# include <string.h>
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#pragma warning(disable: 4996)
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#define snprintf _snprintf
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# define strcasecmp _stricmp
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# define memcasecmp _memicmp
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# ifndef PRIu64
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# define PRIu64 "llu"
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# define PRId64 "lld"
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# define PRIx64 "llx"
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# endif
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#elif defined(_MSC_VER) && (_MSC_VER == 1200)
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/* Visual Studio 6.0 */
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# define snprintf _snprintf
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# define strcasecmp _stricmp
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# define memcasecmp _memicmp
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# define vsnprintf _vsnprintf
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#elif defined(__GNUC__) && (__GNUC__ >= 4)
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#include <inttypes.h>
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int memcasecmp(const void *lhs, const void *rhs, size_t length);;
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#else
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# warning unknown compiler
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#endif
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#endif
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