| 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 */ |