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 */ 70
