| 1 | /* $Id: VBoxGuestR3LibGuestUser.cpp 57358 2015-08-14 15:16:38Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VBoxGuestR3Lib - Ring-3 Support Library for VirtualBox guest additions,
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| 4 | * guest user reporting / utility functions.
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| 5 | */
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| 6 |
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| 7 | /*
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| 8 | * Copyright (C) 2013-2015 Oracle Corporation
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| 9 | *
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| 10 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 11 | * available from http://www.virtualbox.org. This file is free software;
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| 12 | * you can redistribute it and/or modify it under the terms of the GNU
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| 13 | * General Public License (GPL) as published by the Free Software
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| 14 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 15 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 16 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 17 | *
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| 18 | * The contents of this file may alternatively be used under the terms
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| 19 | * of the Common Development and Distribution License Version 1.0
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| 20 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 21 | * VirtualBox OSE distribution, in which case the provisions of the
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| 22 | * CDDL are applicable instead of those of the GPL.
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| 23 | *
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| 24 | * You may elect to license modified versions of this file under the
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| 25 | * terms and conditions of either the GPL or the CDDL or both.
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| 26 | */
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| 27 |
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| 28 |
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| 29 | /*********************************************************************************************************************************
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| 30 | * Header Files *
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| 31 | *********************************************************************************************************************************/
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| 32 | #include <iprt/assert.h>
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| 33 | #include <VBox/log.h>
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| 34 | #include <iprt/mem.h>
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| 35 | #include <iprt/string.h>
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| 36 |
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| 37 | #include "VBGLR3Internal.h"
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| 38 |
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| 39 |
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| 40 | /**
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| 41 | * Reports a state change of a specific guest user.
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| 42 | *
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| 43 | * @returns IPRT status value
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| 44 | * @param pszUser Guest user name to report state for.
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| 45 | * @param pszDomain Domain the guest user's account is bound to.
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| 46 | * @param enmState Guest user state to report.
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| 47 | * @param puDetails Pointer to state details. Optional.
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| 48 | * @param cbDetails Size (in bytes) of state details. Pass 0
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| 49 | * if puDetails is NULL.
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| 50 | */
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| 51 | VBGLR3DECL(int) VbglR3GuestUserReportState(const char *pszUser,
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| 52 | const char *pszDomain,
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| 53 | VBoxGuestUserState enmState,
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| 54 | uint8_t *puDetails,
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| 55 | uint32_t cbDetails)
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| 56 | {
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| 57 | AssertPtrReturn(pszUser, VERR_INVALID_POINTER);
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| 58 | /* pszDomain is optional. */
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| 59 | /* puDetails is optional. */
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| 60 |
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| 61 | uint32_t cbBase = sizeof(VMMDevReportGuestUserState);
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| 62 | uint32_t cbUser = strlen(pszUser) + 1; /* Include terminating zero */
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| 63 | uint32_t cbDomain = pszDomain ? strlen(pszDomain) + 1 /* Dito */ : 0;
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| 64 |
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| 65 | /* Allocate enough space for all fields. */
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| 66 | unsigned long cbSize =
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| 67 | cbBase
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| 68 | + cbUser
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| 69 | + cbDomain
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| 70 | + cbDetails;
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| 71 |
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| 72 | AssertReturn(cbSize, VERR_BUFFER_UNDERFLOW);
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| 73 | VMMDevReportGuestUserState *pReport =
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| 74 | (VMMDevReportGuestUserState *)RTMemAllocZ(cbSize);
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| 75 | if (!pReport)
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| 76 | return VERR_NO_MEMORY;
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| 77 |
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| 78 | int rc = vmmdevInitRequest(&pReport->header, VMMDevReq_ReportGuestUserState);
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| 79 | if (RT_SUCCESS(rc))
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| 80 | {
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| 81 | pReport->header.size = cbSize;
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| 82 |
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| 83 | pReport->status.state = enmState;
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| 84 | pReport->status.cbUser = cbUser;
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| 85 | pReport->status.cbDomain = cbDomain;
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| 86 | pReport->status.cbDetails = cbDetails;
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| 87 |
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| 88 | /*
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| 89 | * Note: cbOffDynamic contains the first dynamic array entry within
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| 90 | * VBoxGuestUserStatus.
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| 91 | * Therefore it's vital to *not* change the order of the struct members
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| 92 | * without altering this code. Don't try this at home.
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| 93 | */
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| 94 | uint32_t cbOffDynamic =
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| 95 | RT_OFFSETOF(VBoxGuestUserStatus, szUser);
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| 96 |
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| 97 | /* pDynamic marks the beginning for the dynamically allocated areas. */
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| 98 | uint8_t *pDynamic = (uint8_t *)&pReport->status;
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| 99 | pDynamic += cbOffDynamic;
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| 100 | AssertPtr(pDynamic);
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| 101 |
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| 102 | memcpy(pDynamic, pszUser, cbUser);
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| 103 | if (cbDomain)
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| 104 | memcpy(pDynamic + cbUser, pszDomain, cbDomain);
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| 105 | if (cbDetails)
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| 106 | memcpy(pDynamic + cbUser + cbDomain, puDetails, cbDetails);
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| 107 |
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| 108 | rc = vbglR3GRPerform(&pReport->header);
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| 109 | }
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| 110 |
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| 111 | RTMemFree(pReport);
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| 112 | return rc;
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| 113 | }
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| 114 |
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