1 | /* $Id: VBoxGuestR3LibAutoLogon.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */
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2 | /** @file
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3 | * VBoxGuestR3LibAutoLogon - Ring-3 utility functions for auto-logon modules
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4 | * (VBoxGINA / VBoxCredProv / pam_vbox).
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5 | */
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6 |
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7 | /*
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8 | * Copyright (C) 2012-2022 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 | #ifdef RT_OS_WINDOWS
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33 | # include <iprt/win/windows.h>
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34 | #endif
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35 |
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36 | #include "VBoxGuestR3LibInternal.h"
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37 | #include <iprt/errcore.h>
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38 |
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39 |
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40 | /**
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41 | * Reports the current auto-logon status to the host.
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42 | *
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43 | * This makes sure that the Failed state is sticky.
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44 | *
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45 | * @return IPRT status code.
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46 | * @param enmStatus Status to report to the host.
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47 | */
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48 | VBGLR3DECL(int) VbglR3AutoLogonReportStatus(VBoxGuestFacilityStatus enmStatus)
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49 | {
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50 | /*
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51 | * VBoxGuestFacilityStatus_Failed is sticky.
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52 | */
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53 | static VBoxGuestFacilityStatus s_enmLastStatus = VBoxGuestFacilityStatus_Inactive;
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54 | if (s_enmLastStatus != VBoxGuestFacilityStatus_Failed)
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55 | {
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56 | int rc = VbglR3ReportAdditionsStatus(VBoxGuestFacilityType_AutoLogon, enmStatus, 0 /* Flags */);
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57 | if (rc == VERR_NOT_SUPPORTED)
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58 | {
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59 | /*
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60 | * To maintain backwards compatibility to older hosts which don't have
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61 | * VMMDevReportGuestStatus implemented we set the appropriate status via
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62 | * guest property to have at least something.
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63 | */
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64 | #ifdef VBOX_WITH_GUEST_PROPS
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65 | HGCMCLIENTID idClient = 0;
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66 | rc = VbglR3GuestPropConnect(&idClient);
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67 | if (RT_SUCCESS(rc))
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68 | {
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69 | const char *pszStatus;
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70 | switch (enmStatus)
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71 | {
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72 | case VBoxGuestFacilityStatus_Inactive: pszStatus = "Inactive"; break;
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73 | case VBoxGuestFacilityStatus_Paused: pszStatus = "Disabled"; break;
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74 | case VBoxGuestFacilityStatus_PreInit: pszStatus = "PreInit"; break;
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75 | case VBoxGuestFacilityStatus_Init: pszStatus = "Init"; break;
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76 | case VBoxGuestFacilityStatus_Active: pszStatus = "Active"; break;
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77 | case VBoxGuestFacilityStatus_Terminating: pszStatus = "Terminating"; break;
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78 | case VBoxGuestFacilityStatus_Terminated: pszStatus = "Terminated"; break;
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79 | case VBoxGuestFacilityStatus_Failed: pszStatus = "Failed"; break;
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80 | default: pszStatus = NULL;
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81 | }
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82 | if (pszStatus)
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83 | {
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84 | /*
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85 | * Use TRANSRESET when possible, fall back to TRANSIENT
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86 | * (generally sufficient unless the guest misbehaves).
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87 | */
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88 | static const char s_szPath[] = "/VirtualBox/GuestInfo/OS/AutoLogonStatus";
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89 | rc = VbglR3GuestPropWrite(idClient, s_szPath, pszStatus, "TRANSRESET");
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90 | if (rc == VERR_PARSE_ERROR)
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91 | rc = VbglR3GuestPropWrite(idClient, s_szPath, pszStatus, "TRANSIENT");
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92 | }
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93 | else
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94 | rc = VERR_INVALID_PARAMETER;
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95 |
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96 | VbglR3GuestPropDisconnect(idClient);
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97 | }
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98 | #endif
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99 | }
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100 |
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101 | s_enmLastStatus = enmStatus;
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102 | }
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103 | return VINF_SUCCESS;
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104 | }
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105 |
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106 |
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107 | /**
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108 | * Detects whether our process is running in a remote session or not.
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109 | *
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110 | * @return bool true if running in a remote session, false if not.
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111 | */
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112 | VBGLR3DECL(bool) VbglR3AutoLogonIsRemoteSession(void)
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113 | {
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114 | #ifdef RT_OS_WINDOWS
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115 | return GetSystemMetrics(SM_REMOTESESSION) != 0 ? true : false;
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116 | #else
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117 | return false; /* Not implemented. */
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118 | #endif
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119 | }
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120 |
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