mesh/util.c

/*
 *
 *  BlueZ - Bluetooth protocol stack 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.
 *
 *
 */

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

#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <time.h>

#include "mesh/util.h"

uint32_t get_timestamp_secs(void)
{
	struct timespec ts;

	clock_gettime(CLOCK_MONOTONIC, &ts);
	return ts.tv_sec;
}

bool str2hex(const char *str, uint16_t in_len, uint8_t *out,
							uint16_t out_len)
{
	uint16_t i;

	if (in_len < out_len * 2)
		return false;

	for (i = 0; i < out_len; i++) {
		if (sscanf(&str[i * 2], "%02hhx", &out[i]) != 1)
			return false;
	}

	return true;
}

size_t hex2str(uint8_t *in, size_t in_len, char *out, size_t out_len)
{
	static const char hexdigits[] = "0123456789abcdef";
	size_t i;

	if (in_len * 2 > (out_len - 1))
		return 0;

	for (i = 0; i < in_len; i++) {
		out[i * 2] = hexdigits[in[i] >> 4];
		out[i * 2 + 1] = hexdigits[in[i] & 0xf];
	}

	out[in_len * 2] = '\0';
	return i;
}