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/*
* Copyright (C) 2005-2015 Free Software Foundation, Inc.
* Copyright (C) 2015 Nikos Mavrogiannopoulos, Inc.
*
* Author: Nikos Mavrogiannopoulos
*
* This file is part of GnuTLS.
*
* The GnuTLS is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>
*
*/
#include "gnutls_int.h"
#include "file.h"
#include <read-file.h>
int _gnutls_file_exists(const char *file)
{
FILE *fp;
fp = fopen(file, "re");
if (fp == NULL)
return -1;
fclose(fp);
return 0;
}
/**
* gnutls_load_file:
* @filename: the name of the file to load
* @data: Where the file will be stored
*
* This function will load a file into a datum. The data are
* zero terminated but the terminating null is not included in length.
* The returned data are allocated using gnutls_malloc().
*
* Note that this function is not designed for reading sensitive materials,
* such as private keys, on practical applications. When the reading fails
* in the middle, the partially loaded content might remain on memory.
*
* Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise
* an error code is returned.
*
* Since 3.1.0
**/
int gnutls_load_file(const char *filename, gnutls_datum_t *data)
{
size_t len;
data->data = (void *)read_file(filename, RF_BINARY, &len);
if (data->data == NULL)
return GNUTLS_E_FILE_ERROR;
if (malloc != gnutls_malloc) {
void *tmp = gnutls_malloc(len);
if (tmp == NULL) {
gnutls_free(data->data);
data->data = NULL;
return GNUTLS_E_MEMORY_ERROR;
}
memcpy(tmp, data->data, len);
free(data->data);
data->data = tmp;
}
data->size = len;
return 0;
}
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