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    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