1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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.
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.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
21 ***************************************************************************/
23 #include "curl_setup.h"
25 #include <curl/curl.h>
28 #include "curl_memory.h"
30 /* The last #include file should be: */
34 char *curlx_strdup(const char *str)
44 if(len >= ((size_t)-1) / sizeof(char))
47 newstr = malloc((len + 1)*sizeof(char));
51 memcpy(newstr, str, (len + 1)*sizeof(char));
58 /***************************************************************************
60 * Curl_memdup(source, length)
62 * Copies the 'source' data to a newly allocated buffer (that is
63 * returned). Copies 'length' bytes.
65 * Returns the new pointer or NULL on failure.
67 ***************************************************************************/
68 void *Curl_memdup(const void *src, size_t length)
70 void *buffer = malloc(length);
72 return NULL; /* fail */
74 memcpy(buffer, src, length);
79 /***************************************************************************
81 * Curl_saferealloc(ptr, size)
83 * Does a normal realloc(), but will free the data pointer if the realloc
84 * fails. If 'size' is zero, it will free the data and return a failure.
86 * This convenience function is provided and used to help us avoid a common
87 * mistake pattern when we could pass in a zero, catch the NULL return and end
88 * up free'ing the memory twice.
90 * Returns the new pointer or NULL on failure.
92 ***************************************************************************/
93 void *Curl_saferealloc(void *ptr, size_t size)
95 void *datap = realloc(ptr, size);
97 /* only free 'ptr' if size was non-zero */