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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "apr.h"
#include <rpc.h>
#include <winnt.h>
#include <bcrypt.h>
#include "apr_private.h"
#include "apr_general.h"
#include "apr_portable.h"
#include "apr_arch_misc.h"
APR_DECLARE(apr_status_t) apr_generate_random_bytes(unsigned char * buf,
apr_size_t length)
{
NTSTATUS ntstatus;
ntstatus = BCryptGenRandom(NULL, buf, (DWORD) length,
BCRYPT_USE_SYSTEM_PREFERRED_RNG);
if (BCRYPT_SUCCESS(ntstatus)) {
return APR_SUCCESS;
}
else if (ntstatus == STATUS_INVALID_PARAMETER) {
return APR_FROM_OS_ERROR(ERROR_INVALID_PARAMETER);
}
else {
return APR_EGENERAL;
}
}
APR_DECLARE(apr_status_t) apr_os_uuid_get(unsigned char *uuid_data)
{
/* Note: this call doesn't actually require CoInitialize() first
*
* XXX: we should scramble the bytes or some such to eliminate the
* possible misuse/abuse since uuid is based on the NIC address, and
* is therefore not only a uniqifier, but an identity (which might not
* be appropriate in all cases.
*
* Note that Win2000, XP and later no longer suffer from this problem,
* a scrambling fix is only needed for (apr_os_level < APR_WIN_2000)
*/
if (FAILED(UuidCreate((UUID *)uuid_data))) {
return APR_EGENERAL;
}
return APR_SUCCESS;
}
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