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/*
Copyright (c) 2007-2011 iMatix Corporation
Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
This file is part of 0MQ.
0MQ 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 3 of the License, or
(at your option) any later version.
0MQ 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.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <string.h>
#include "uuid.hpp"
#include "err.hpp"
#include "stdint.hpp"
#include "platform.hpp"
#if defined ZMQ_HAVE_WINDOWS
#include <rpc.h>
void zmq::generate_uuid (void *buf_)
{
RPC_STATUS ret = UuidCreate ((::UUID*) buf_);
zmq_assert (ret == RPC_S_OK);
}
#elif defined ZMQ_HAVE_FREEBSD || defined ZMQ_HAVE_NETBSD
#include <uuid.h>
void zmq::generate_uuid (void *buf_)
{
uint32_t status;
uuid_create ((::uuid_t*) buf_, &status);
zmq_assert (status == uuid_s_ok);
}
#elif defined ZMQ_HAVE_LINUX || defined ZMQ_HAVE_SOLARIS ||\
defined ZMQ_HAVE_OSX || defined ZMQ_HAVE_CYGWIN
#include <uuid/uuid.h>
void zmq::generate_uuid (void *buf_)
{
uuid_generate ((unsigned char*) buf_);
}
#elif defined ZMQ_HAVE_OPENVMS
#include <starlet.h>
void zmq::generate_uuid (void *buf_)
{
sys$create_uid(buf_);
}
#else
#include <openssl/rand.h>
void zmq::generate_uuid (void *buf_)
{
unsigned char *buf = (unsigned char*) buf_;
// Generate random value.
int ret = RAND_bytes (buf, 16);
zmq_assert (ret == 1);
// Set UUID variant to 2 (UUID as specified in RFC4122).
const unsigned char variant = 2;
buf [8] = (buf [8] & 0x3f) | (variant << 6);
// Set UUID version to 4 (randomly or pseudo-randomly generated UUID).
const unsigned char version = 4;
buf [6] = (buf [6] & 0x0f) | (version << 4);
}
#endif
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