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/*
* Ouroboros - Copyright (C) 2016 - 2021
*
* Policy for flat addresses in a distributed way
*
* Dimitri Staessens <dimitri.staessens@ugent.be>
* Sander Vrijders <sander.vrijders@ugent.be>
*
* 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.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., http://www.fsf.org/about/contact/.
*/
#if defined(__linux__) || defined(__CYGWIN__)
#define _DEFAULT_SOURCE
#else
#define _POSIX_C_SOURCE 200112L
#endif
#define OUROBOROS_PREFIX "flat-addr-auth"
#include <ouroboros/logs.h>
#include <ouroboros/errno.h>
#include <ouroboros/time_utils.h>
#include <ouroboros/utils.h>
#include "ipcp.h"
#include "flat.h"
#include <time.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <assert.h>
#define NAME_LEN 8
struct {
uint8_t addr_size;
} flat;
#define INVALID_ADDRESS 0
struct pol_addr_auth_ops flat_ops = {
.init = flat_init,
.fini = flat_fini,
.address = flat_address
};
int flat_init(const void * info)
{
flat.addr_size = *((uint8_t *) info);
if (flat.addr_size != 4) {
log_err("Flat address policy mandates 4 byte addresses.");
return -1;
}
return 0;
}
int flat_fini(void)
{
return 0;
}
uint64_t flat_address(void)
{
struct timespec t;
uint32_t addr;
clock_gettime(CLOCK_REALTIME, &t);
srand(t.tv_nsec);
addr = (rand() % (RAND_MAX - 1) + 1) & 0xFFFFFFFF;
return addr;
}
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