1 /*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2015, 2017, Daniel Stenberg, <daniel (at) haxx.se>, et al. 9 * 10 * This software is licensed as described in the file COPYING, which 11 * you should have received as part of this distribution. The terms 12 * are also available at https://curl.haxx.se/docs/copyright.html. 13 * 14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 15 * copies of the Software, and permit persons to whom the Software is 16 * furnished to do so, under the terms of the COPYING file. 17 * 18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 19 * KIND, either express or implied. 20 * 21 ***************************************************************************/ 22 #include "tool_strdup.h" 23 24 #ifndef HAVE_STRDUP 25 char *strdup(const char *str) 26 { 27 size_t len; 28 char *newstr; 29 30 if(!str) 31 return (char *)NULL; 32 33 len = strlen(str); 34 35 if(len >= ((size_t)-1) / sizeof(char)) 36 return (char *)NULL; 37 38 newstr = malloc((len + 1)*sizeof(char)); 39 if(!newstr) 40 return (char *)NULL; 41 42 memcpy(newstr, str, (len + 1)*sizeof(char)); 43 44 return newstr; 45 46 } 47 #endif 48
