lighttpd 1.4.x
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97 lines
3.0 KiB
97 lines
3.0 KiB
/*
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* ck - C11 Annex K wrappers (selected functions; not complete)
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*
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* ck is also an abbreviation for "check".
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* These are validating, checking functions.
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*
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* Copyright(c) 2016,2021 Glenn Strauss gstrauss()gluelogic.com All rights reserved
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* License: BSD 3-clause (same as lighttpd)
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*/
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#ifndef INCLUDED_CK_H
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#define INCLUDED_CK_H
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#ifndef __STDC_WANT_LIB_EXT1__ /*(enable C11 Annex K ext1 *_s functions)*/
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#define __STDC_WANT_LIB_EXT1__ 1
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#endif
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#if defined(__APPLE__) && defined(__MACH__)
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#ifndef _DARWIN_C_SOURCE
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#define _DARWIN_C_SOURCE
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#endif
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#endif
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#include "first.h"
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#ifdef __FreeBSD__
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#ifndef _RSIZE_T_DEFINED /* expecting __EXT1_VISIBLE 1 and _RSIZE_T_DEFINED */
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#define _RSIZE_T_DEFINED
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typedef size_t rsize_t;
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#endif
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#include <errno.h>
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#endif
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__BEGIN_DECLS
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#ifndef RSIZE_MAX
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#define RSIZE_MAX (SIZE_MAX >> 1)
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typedef size_t rsize_t;
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typedef int errno_t;
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#endif
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errno_t ck_getenv_s (size_t * restrict len, char * restrict value, rsize_t maxsize, const char * restrict name);
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/*(ck_memclear_s() is not from C11 Annex K
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* ck_memclear_s() is similar to memset_s() using constant byte 0 for fill)*/
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errno_t ck_memclear_s (void *s, rsize_t smax, rsize_t n);
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/*(ck_memzero() is not from C11 Annex K
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* ck_memzero() is a convenience wrapper around ck_memclear_s())*/
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static inline errno_t ck_memzero(void *s, rsize_t n);
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static inline errno_t ck_memzero(void *s, rsize_t n) {
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return ck_memclear_s(s, n, n);
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}
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errno_t ck_strerror_s (char *s, rsize_t maxsize, errno_t errnum);
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/*(ck_memeq_const_time() is not from C11 Annex K)
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* constant time memory compare for equality
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* rounds to next multiple of 64 to avoid potentially leaking exact
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* string lengths when subject to high precision timing attacks */
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__attribute_nonnull__()
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int ck_memeq_const_time (const void *a, size_t alen, const void *b, size_t blen);
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/*(ck_memeq_const_time_fixed_len() is not from C11 Annex K)
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* constant time memory compare for equality for fixed len (e.g. digests)
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* (padding not necessary for digests, which have fixed, defined lengths) */
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__attribute_nonnull__()
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int ck_memeq_const_time_fixed_len (const void *a, const void *b, size_t len);
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/*(ck_bt() is not from C11 Annex K)
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* ck_bt() prints backtrace to stderr */
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__attribute_cold__
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__attribute_nonnull__()
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void ck_bt(const char *filename, unsigned int line, const char *msg);
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/*(ck_bt_abort() is not from C11 Annex K)
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* ck_bt_abort() prints backtrace to stderr and calls abort() */
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__attribute_cold__
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__attribute_nonnull__()
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__attribute_noreturn__
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void ck_bt_abort(const char *filename, unsigned int line, const char *msg);
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/*(ck_assert() and ck_assert_failed() are not from C11 Annex K)
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* ck_assert() executes a runtime assertion test or aborts
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* ck_assert() *is not* optimized away if defined(NDEBUG)
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* (unlike standard assert(), which *is* optimized away if defined(NDEBUG)) */
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__attribute_cold__
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__attribute_nonnull__()
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__attribute_noreturn__
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void ck_assert_failed(const char *filename, unsigned int line, const char *msg);
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#define ck_assert(x) \
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do { if (!(x)) ck_assert_failed(__FILE__, __LINE__, #x); } while (0)
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__END_DECLS
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#endif
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