osmo-hlr/src/rand_fake.c

53 lines
1.2 KiB
C

/* (C) 2012 by Harald Welte <laforge@gnumonks.org>
*
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <stdint.h>
#include <unistd.h>
#include <sys/stat.h>
static uint8_t ctr = 0;
static void print_msg(void)
{
static int printed = 0;
if (!printed) {
fprintf(stderr, "Using fake random generator for deterministic "
"test results. NEVER USE THIS IN PRODUCTION\n");
printed = 1;
}
}
int rand_init(void)
{
print_msg();
return 0;
}
int rand_get(uint8_t *rand, unsigned int len)
{
print_msg();
memset(rand, ctr, len);
ctr++;
return len;
}