1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
/*
* ck - C11 Annex K wrappers (selected functions; not complete)
*
* ck is also an abbreviation for "check".
* These are validating, checking functions.
*
* Copyright(c) 2016,2021 Glenn Strauss gstrauss()gluelogic.com All rights reserved
* License: BSD 3-clause (same as lighttpd)
*/
#ifndef INCLUDED_CK_H
#define INCLUDED_CK_H
#ifndef __STDC_WANT_LIB_EXT1__ /*(enable C11 Annex K ext1 *_s functions)*/
#define __STDC_WANT_LIB_EXT1__ 1
#endif
#if defined(__APPLE__) && defined(__MACH__)
#ifndef _DARWIN_C_SOURCE
#define _DARWIN_C_SOURCE
#endif
#endif
#include "first.h"
#if defined(__FreeBSD__) || defined(__sun)
#ifndef _RSIZE_T_DEFINED /* expecting __EXT1_VISIBLE 1 and _RSIZE_T_DEFINED */
#define _RSIZE_T_DEFINED
typedef size_t rsize_t;
#endif
#include <errno.h>
#endif
__BEGIN_DECLS
#ifndef RSIZE_MAX
#define RSIZE_MAX (SIZE_MAX >> 1)
typedef size_t rsize_t;
typedef int errno_t;
#endif
errno_t ck_getenv_s (size_t * restrict len, char * restrict value, rsize_t maxsize, const char * restrict name);
/*(ck_memclear_s() is not from C11 Annex K
* ck_memclear_s() is similar to memset_s() using constant byte 0 for fill)*/
errno_t ck_memclear_s (void *s, rsize_t smax, rsize_t n);
/*(ck_memzero() is not from C11 Annex K
* ck_memzero() is a convenience wrapper around ck_memclear_s())*/
static inline errno_t ck_memzero(void *s, rsize_t n);
static inline errno_t ck_memzero(void *s, rsize_t n) {
return ck_memclear_s(s, n, n);
}
errno_t ck_strerror_s (char *s, rsize_t maxsize, errno_t errnum);
/*(ck_memeq_const_time() is not from C11 Annex K)
* constant time memory compare for equality
* rounds to next multiple of 64 to avoid potentially leaking exact
* string lengths when subject to high precision timing attacks */
__attribute_nonnull__()
int ck_memeq_const_time (const void *a, size_t alen, const void *b, size_t blen);
/*(ck_memeq_const_time_fixed_len() is not from C11 Annex K)
* constant time memory compare for equality for fixed len (e.g. digests)
* (padding not necessary for digests, which have fixed, defined lengths) */
__attribute_nonnull__()
int ck_memeq_const_time_fixed_len (const void *a, const void *b, size_t len);
/*(ck_malloc() is not from C11 Annex K)
* ck_malloc() performs malloc() on args and aborts if malloc() fails */
__attribute_malloc__
__attribute_returns_nonnull__
void * ck_malloc (size_t nbytes);
/*(ck_calloc() is not from C11 Annex K)
* ck_calloc() performs calloc() on args and aborts if calloc() fails */
__attribute_malloc__
__attribute_returns_nonnull__
void * ck_calloc (size_t nmemb, size_t elt_sz);
/*(ck_realloc_u32() is not from C11 Annex K)
* ck_realloc_u32() performs realloc() on *list or aborts
* extends *list with n used elements by x elements of elt_sz
* and ensures n + x <= UINT32_MAX */
__attribute_nonnull__()
__attribute_returns_nonnull__
void * ck_realloc_u32 (void **list, size_t n, size_t x, size_t elt_sz);
/*(ck_bt() is not from C11 Annex K)
* ck_bt() prints backtrace to stderr */
__attribute_cold__
__attribute_nonnull__()
void ck_bt(const char *filename, unsigned int line, const char *msg);
/*(ck_bt_abort() is not from C11 Annex K)
* ck_bt_abort() prints backtrace to stderr and calls abort() */
__attribute_cold__
__attribute_nonnull__()
__attribute_noreturn__
void ck_bt_abort(const char *filename, unsigned int line, const char *msg);
/*(ck_assert() and ck_assert_failed() are not from C11 Annex K)
* ck_assert() executes a runtime assertion test or aborts
* ck_assert() *is not* optimized away if defined(NDEBUG)
* (unlike standard assert(), which *is* optimized away if defined(NDEBUG)) */
__attribute_cold__
__attribute_nonnull__()
__attribute_noreturn__
void ck_assert_failed(const char *filename, unsigned int line, const char *msg);
#define ck_assert(x) \
do { if (!(x)) ck_assert_failed(__FILE__, __LINE__, #x); } while (0)
__END_DECLS
#endif
|
