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/*
* Copyright (c) 2001 Damien Miller. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "includes.h"
#include <sys/types.h>
#include <sys/socket.h>
#ifdef HAVE_SYS_UN_H
# include <sys/un.h>
#endif
#include <netinet/in.h>
#include <arpa/inet.h>
#include <errno.h>
#include <signal.h>
#include <string.h>
#include <unistd.h>
#include <openssl/rand.h>
#include <openssl/crypto.h>
#include <openssl/err.h>
#include "smtpd/log.h"
void
seed_rng(void)
{
#ifndef LIBRESSL_VERSION
u_long mask;
/*
* OpenSSL version numbers: MNNFFPPS: major minor fix patch status
* We match major, minor, fix and status (not patch) for <1.0.0.
* After that, we acceptable compatible fix versions (so we
* allow 1.0.1 to work with 1.0.0). Going backwards is only allowed
* within a patch series.
*/
mask = SSLeay() >= 0x1000000f ? 0xfff00000L : 0xfffff00fL;
if ((SSLeay() & mask) < (OPENSSL_VERSION_NUMBER & mask)) {
fatalx("OpenSSL version mismatch. Built against %lx, you have %lx\n",
(u_long)OPENSSL_VERSION_NUMBER, SSLeay());
}
#endif
if (RAND_status() != 1)
fatal("PRNG is not seeded");
}
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