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      1 /***************************************************************************
      2  *                                  _   _ ____  _
      3  *  Project                     ___| | | |  _ \| |
      4  *                             / __| | | | |_) | |
      5  *                            | (__| |_| |  _ <| |___
      6  *                             \___|\___/|_| \_\_____|
      7  *
      8  * Copyright (C) 1998 - 2015, 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 http://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 "curl_setup.h"
     23 #include "strdup.h"
     24 #include "curl_memory.h"
     25 
     26 /* The last #include file should be: */
     27 #include "memdebug.h"
     28 
     29 #ifndef HAVE_STRDUP
     30 char *curlx_strdup(const char *str)
     31 {
     32   size_t len;
     33   char *newstr;
     34 
     35   if(!str)
     36     return (char *)NULL;
     37 
     38   len = strlen(str);
     39 
     40   if(len >= ((size_t)-1) / sizeof(char))
     41     return (char *)NULL;
     42 
     43   newstr = malloc((len+1)*sizeof(char));
     44   if(!newstr)
     45     return (char *)NULL;
     46 
     47   memcpy(newstr, str, (len+1)*sizeof(char));
     48 
     49   return newstr;
     50 
     51 }
     52 #endif
     53 
     54 /***************************************************************************
     55  *
     56  * Curl_memdup(source, length)
     57  *
     58  * Copies the 'source' data to a newly allocated buffer (that is
     59  * returned). Copies 'length' bytes.
     60  *
     61  * Returns the new pointer or NULL on failure.
     62  *
     63  ***************************************************************************/
     64 char *Curl_memdup(const char *src, size_t length)
     65 {
     66   char *buffer = malloc(length);
     67   if(!buffer)
     68     return NULL; /* fail */
     69 
     70   memcpy(buffer, src, length);
     71 
     72   return buffer;
     73 }
     74