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
|
/*
* Copyright (C) 2002 Nikos Mavroyanopoulos
*
* This file is part of LIBASN1.
*
* The LIBTASN1 library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <defines.h>
/* These function are like strcat, strcpy. They only
* do bound checking (they shouldn't cause buffer overruns),
* and they always produce null terminated strings.
*
* They should be used only with null terminated strings.
*/
void _asn1_str_cat( char* dest, size_t dest_tot_size, const char* src) {
size_t str_size = strlen(src);
size_t dest_size = strlen(dest);
if ( dest_tot_size - dest_size > str_size) {
strcat( dest, src);
} else {
if ( dest_tot_size - dest_size > 0) {
strncat( dest, src, (dest_tot_size - dest_size) -1);
dest[dest_tot_size-1] = 0;
}
}
}
void _asn1_str_cpy( char* dest, size_t dest_tot_size, const char* src) {
size_t str_size = strlen(src);
if ( dest_tot_size > str_size) {
strcpy( dest, src);
} else {
if ( dest_tot_size > 0) {
strncpy( dest, src, (dest_tot_size) -1);
dest[dest_tot_size-1] = 0;
}
}
}
void _asn1_mem_cpy( char* dest, size_t dest_tot_size, const char* src, size_t src_size)
{
if ( dest_tot_size >= src_size) {
memcpy( dest, src, src_size);
} else {
if ( dest_tot_size > 0) {
memcpy( dest, src, dest_tot_size);
}
}
}
|
