/* Serval Distributed Numbering Architecture (DNA) Copyright (C) 2010 Paul Gardner-Stephen This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ /*- * Copyright (c) 2006 Verdens Gang AS * Copyright (c) 2006-2008 Linpro AS * All rights reserved. * * Author: Dag-Erling SmÃ\u017ergrav <des@linpro.no> * * 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 AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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. * * $Id$ */ #ifndef HAVE_SRANDOMDEV #ifndef WIN32 #include <sys/time.h> #include <unistd.h> #endif #include "mphlr.h" #include <fcntl.h> #include <stdlib.h> #include <time.h> void srandomdev(void) { struct timeval tv; unsigned int seed; #ifndef WIN32 FILE *fd; fd = fopen("/dev/urandom", "r"); if (fd >= 0) { fread(&seed, sizeof seed, 1, fd); fclose(fd); } else #endif { gettimeofday(&tv, NULL); /* NOTE: intentional use of uninitialized variable */ seed ^= (getpid() << 16) ^ tv.tv_sec ^ tv.tv_usec; } srandom(seed); } #endif