/*
 *
 *  Wireless daemon for Linux
 *
 *  Copyright (C) 2018  Intel Corporation. All rights reserved.
 *
 *  This library 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 library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <ell/ell.h>

#include "eap-tls-common.h"

struct databuf *databuf_new(size_t capacity)
{
	struct databuf *databuf;

	if (!capacity)
		return NULL;

	databuf = l_new(struct databuf, 1);
	databuf->data = l_malloc(capacity);
	databuf->capacity = capacity;

	return databuf;
}

void databuf_append(struct databuf *databuf, const uint8_t *data,
								size_t data_len)
{
	size_t new_len;

	if (!databuf)
		return;

	new_len = databuf->len + data_len;

	if (new_len > databuf->capacity) {
		databuf->capacity = new_len * 2;
		databuf->data = l_realloc(databuf->data, databuf->capacity);
	}

	memcpy(databuf->data + databuf->len, data, data_len);

	databuf->len = new_len;
}

void databuf_free(struct databuf *databuf)
{
	if (!databuf)
		return;

	l_free(databuf->data);
	l_free(databuf);
}