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1 | /* libFLAC - Free Lossless Audio Codec library |
2 | * Copyright (C) 2013-2016 Xiph.org Foundation |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions |
6 | * are met: |
7 | * |
8 | * - Redistributions of source code must retain the above copyright |
9 | * notice, this list of conditions and the following disclaimer. |
10 | * |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
14 | * |
15 | * - Neither the name of the Xiph.org Foundation nor the names of its |
16 | * contributors may be used to endorse or promote products derived from |
17 | * this software without specific prior written permission. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
23 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
24 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
25 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
26 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
27 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
28 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
29 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
30 | */ |
31 | |
32 | /* Safe string handling functions to replace things like strcpy, strncpy, |
33 | * strcat, strncat etc. |
34 | * All of these functions guarantee a correctly NUL terminated string but |
35 | * the string may be truncated if the destination buffer was too short. |
36 | */ |
37 | |
38 | #ifndef FLAC__SHARE_SAFE_STR_H |
39 | #define FLAC__SHARE_SAFE_STR_H |
40 | |
41 | static inline char * |
42 | safe_strncat(char *dest, const char *src, size_t dest_size) |
43 | { |
44 | char * ret; |
45 | |
46 | if (dest_size < 1) |
47 | return dest; |
48 | |
49 | ret = strncat(dest, src, dest_size - strlen (dest)); |
50 | dest [dest_size - 1] = 0; |
51 | |
52 | return ret; |
53 | } |
54 | |
55 | static inline char * |
56 | safe_strncpy(char *dest, const char *src, size_t dest_size) |
57 | { |
58 | char * ret; |
59 | |
60 | if (dest_size < 1) |
61 | return dest; |
62 | |
63 | ret = strncpy(dest, src, dest_size); |
64 | dest [dest_size - 1] = 0; |
65 | |
66 | return ret; |
67 | } |
68 | |
69 | #endif /* FLAC__SHARE_SAFE_STR_H */ |