krackattacks/src/drivers/scan_helpers.c

/*
 * WPA Supplicant - Helper functions for scan result processing
 * Copyright (c) 2007-2008, Jouni Malinen <j@w1.fi>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Alternatively, this software may be distributed under the terms of BSD
 * license.
 *
 * See README and COPYING for more details.
 */

#include "includes.h"

#include "common.h"
#include "drivers/driver.h"
#include "common/ieee802_11_defs.h"


const u8 * wpa_scan_get_ie(const struct wpa_scan_res *res, u8 ie)
{
	const u8 *end, *pos;

	pos = (const u8 *) (res + 1);
	end = pos + res->ie_len;

	while (pos + 1 < end) {
		if (pos + 2 + pos[1] > end)
			break;
		if (pos[0] == ie)
			return pos;
		pos += 2 + pos[1];
	}

	return NULL;
}


void wpa_scan_results_free(struct wpa_scan_results *res)
{
	size_t i;

	if (res == NULL)
		return;

	for (i = 0; i < res->num; i++)
		os_free(res->res[i]);
	os_free(res->res);
	os_free(res);
}