1 /***************************************************************************
2  *                                  _   _ ____  _
3  *  Project                     ___| | | |  _ \| |
4  *                             / __| | | | |_) | |
5  *                            | (__| |_| |  _ <| |___
6  *                             \___|\___/|_| \_\_____|
7  *
8  * Copyright (C) 1998 - 2015, 2017, Daniel Stenberg, <daniel@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