Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * Copyright (C) 2002-2023 Free Software Foundation, Inc. |
3 | | * |
4 | | * This file is part of LIBTASN1. |
5 | | * |
6 | | * The LIBTASN1 library is free software; you can redistribute it |
7 | | * and/or modify it under the terms of the GNU Lesser General Public |
8 | | * License as published by the Free Software Foundation; either |
9 | | * version 2.1 of the License, or (at your option) any later version. |
10 | | * |
11 | | * This library is distributed in the hope that it will be useful, but |
12 | | * WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | | * Lesser General Public License for more details. |
15 | | * |
16 | | * You should have received a copy of the GNU Lesser General Public |
17 | | * License along with this library; if not, write to the Free Software |
18 | | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
19 | | * 02110-1301, USA |
20 | | */ |
21 | | |
22 | | #include <int.h> |
23 | | #include "gstr.h" |
24 | | |
25 | | /* These function are like strcat, strcpy. They only |
26 | | * do bounds checking (they shouldn't cause buffer overruns), |
27 | | * and they always produce null terminated strings. |
28 | | * |
29 | | * They should be used only with null terminated strings. |
30 | | */ |
31 | | void |
32 | | _asn1_str_cat (char *dest, size_t dest_tot_size, const char *src) |
33 | 12.8k | { |
34 | 12.8k | size_t str_size = strlen (src); |
35 | 12.8k | size_t dest_size = strlen (dest); |
36 | | |
37 | 12.8k | if (dest_tot_size - dest_size > str_size) |
38 | 12.5k | { |
39 | 12.5k | strcat (dest, src); |
40 | 12.5k | } |
41 | 336 | else |
42 | 336 | { |
43 | 336 | if (dest_tot_size > dest_size) |
44 | 336 | { |
45 | 336 | strncat (dest, src, (dest_tot_size - dest_size) - 1); |
46 | 336 | dest[dest_tot_size - 1] = 0; |
47 | 336 | } |
48 | 336 | } |
49 | 12.8k | } |
50 | | |
51 | | /* Returns the bytes copied (not including the null terminator) */ |
52 | | unsigned int |
53 | | _asn1_str_cpy (char *dest, size_t dest_tot_size, const char *src) |
54 | 50.7k | { |
55 | 50.7k | size_t str_size = strlen (src); |
56 | | |
57 | 50.7k | if (dest_tot_size > str_size) |
58 | 50.7k | { |
59 | 50.7k | strcpy (dest, src); |
60 | 50.7k | return str_size; |
61 | 50.7k | } |
62 | 0 | else |
63 | 0 | { |
64 | 0 | if (dest_tot_size > 0) |
65 | 0 | { |
66 | 0 | str_size = dest_tot_size - 1; |
67 | 0 | memcpy (dest, src, str_size); |
68 | 0 | dest[str_size] = 0; |
69 | 0 | return str_size; |
70 | 0 | } |
71 | 0 | else |
72 | 0 | return 0; |
73 | 0 | } |
74 | 50.7k | } |