87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
|
/**
|
||
|
|
* @file strdup.h
|
||
|
|
* @author Ambroz Bizjak <ambrop7@gmail.com>
|
||
|
|
*
|
||
|
|
* @section LICENSE
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
* 3. Neither the name of the author nor the
|
||
|
|
* names of its contributors may be used to endorse or promote products
|
||
|
|
* derived from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
||
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||
|
|
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
||
|
|
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
||
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*
|
||
|
|
* @section DESCRIPTION
|
||
|
|
*
|
||
|
|
* Allocate memory for a string and copy it there.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef BADVPN_STRDUP_H
|
||
|
|
#define BADVPN_STRDUP_H
|
||
|
|
|
||
|
|
#include <string.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <limits.h>
|
||
|
|
|
||
|
|
#include <misc/debug.h>
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Allocate and copy a null-terminated string.
|
||
|
|
*/
|
||
|
|
static char * b_strdup (const char *str)
|
||
|
|
{
|
||
|
|
ASSERT(str)
|
||
|
|
|
||
|
|
size_t len = strlen(str);
|
||
|
|
|
||
|
|
char *s = (char *)malloc(len + 1);
|
||
|
|
if (!s) {
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
memcpy(s, str, len + 1);
|
||
|
|
|
||
|
|
return s;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Allocate memory for a null-terminated string and use the
|
||
|
|
* given data as its contents. A null terminator is appended
|
||
|
|
* after the specified data.
|
||
|
|
*/
|
||
|
|
static char * b_strdup_bin (const char *str, size_t len)
|
||
|
|
{
|
||
|
|
ASSERT(str)
|
||
|
|
|
||
|
|
if (len == SIZE_MAX) {
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
char *s = (char *)malloc(len + 1);
|
||
|
|
if (!s) {
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
memcpy(s, str, len);
|
||
|
|
s[len] = '\0';
|
||
|
|
|
||
|
|
return s;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|