| 1 | /* $Id: RTUuidCreate-win.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - UUID, Windows RTUuidCreate implementation.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2022 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*********************************************************************************************************************************
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| 29 | * Header Files *
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| 30 | *********************************************************************************************************************************/
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| 31 | #define LOG_GROUP RTLOGGROUP_UUID
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| 32 | #include <iprt/win/windows.h>
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| 33 |
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| 34 | #include <iprt/uuid.h>
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| 35 | #include <iprt/assert.h>
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| 36 | #include <iprt/errcore.h>
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| 37 | #include <iprt/rand.h>
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| 38 |
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| 39 | #include "internal-r3-win.h"
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| 40 |
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| 41 |
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| 42 | RTDECL(int) RTUuidCreate(PRTUUID pUuid)
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| 43 | {
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| 44 | /*
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| 45 | * Input validation.
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| 46 | */
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| 47 | AssertPtrReturn(pUuid, VERR_INVALID_POINTER);
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| 48 |
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| 49 | /*
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| 50 | * When using the UuidCreate API shortly after boot on NT 3.1 it typcially
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| 51 | * hangs for a long long time while polling for some service to start.
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| 52 | * What then usually happens next is a failure because it couldn't figure
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| 53 | * out the MAC address of the NIC. So, on NT 3.1 we always use the fallback.
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| 54 | */
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| 55 | if (g_enmWinVer != kRTWinOSType_NT310)
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| 56 | {
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| 57 | RPC_STATUS rc = UuidCreate((UUID *)pUuid);
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| 58 | if ( rc == RPC_S_OK
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| 59 | || rc == RPC_S_UUID_LOCAL_ONLY)
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| 60 | return VINF_SUCCESS;
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| 61 | AssertMsg(rc == RPC_S_UUID_NO_ADDRESS, ("UuidCreate -> %u (%#x)\n", rc, rc));
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| 62 | }
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| 63 |
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| 64 | /*
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| 65 | * Use generic implementation as fallback (copy of RTUuidCreate-generic.cpp).
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| 66 | */
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| 67 | RTRandBytes(pUuid, sizeof(*pUuid));
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| 68 | pUuid->Gen.u8ClockSeqHiAndReserved = (pUuid->Gen.u8ClockSeqHiAndReserved & 0x3f) | 0x80;
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| 69 | pUuid->Gen.u16TimeHiAndVersion = (pUuid->Gen.u16TimeHiAndVersion & 0x0fff) | 0x4000;
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| 70 | return VINF_SUCCESS;
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| 71 | }
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| 72 |
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