| 1 | /* $Id: VBoxGuestR3LibAutoLogon.cpp 98103 2023-01-17 14:15:46Z 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) 2012-2023 Oracle and/or its affiliates.
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| 9 | *
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| 10 | * This file is part of VirtualBox base platform packages, as
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| 11 | * available from https://www.virtualbox.org.
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| 12 | *
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| 13 | * This program is free software; you can redistribute it and/or
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| 14 | * modify it under the terms of the GNU General Public License
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| 15 | * as published by the Free Software Foundation, in version 3 of the
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| 16 | * License.
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| 17 | *
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| 18 | * This program is distributed in the hope that it will be useful, but
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| 19 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 21 | * General Public License for more details.
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| 22 | *
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| 23 | * You should have received a copy of the GNU General Public License
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| 24 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 25 | *
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| 26 | * The contents of this file may alternatively be used under the terms
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| 27 | * of the Common Development and Distribution License Version 1.0
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| 28 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 29 | * in the VirtualBox distribution, in which case the provisions of the
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| 30 | * CDDL are applicable instead of those of the GPL.
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| 31 | *
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| 32 | * You may elect to license modified versions of this file under the
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| 33 | * terms and conditions of either the GPL or the CDDL or both.
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| 34 | *
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| 35 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 36 | */
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| 37 |
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| 38 |
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| 39 | /*********************************************************************************************************************************
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| 40 | * Header Files *
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| 41 | *********************************************************************************************************************************/
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| 42 | #ifdef RT_OS_WINDOWS
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| 43 | # include <iprt/win/windows.h>
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| 44 | #endif
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| 45 |
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| 46 | #include "VBoxGuestR3LibInternal.h"
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| 47 | #include <iprt/errcore.h>
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| 48 |
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| 49 |
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| 50 | /**
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| 51 | * Reports the current auto-logon status to the host.
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| 52 | *
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| 53 | * This makes sure that the Failed state is sticky.
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| 54 | *
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| 55 | * @return IPRT status code.
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| 56 | * @param enmStatus Status to report to the host.
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| 57 | */
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| 58 | VBGLR3DECL(int) VbglR3AutoLogonReportStatus(VBoxGuestFacilityStatus enmStatus)
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| 59 | {
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| 60 | /*
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| 61 | * VBoxGuestFacilityStatus_Failed is sticky.
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| 62 | */
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| 63 | static VBoxGuestFacilityStatus s_enmLastStatus = VBoxGuestFacilityStatus_Inactive;
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| 64 | if (s_enmLastStatus != VBoxGuestFacilityStatus_Failed)
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| 65 | {
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| 66 | int rc = VbglR3ReportAdditionsStatus(VBoxGuestFacilityType_AutoLogon, enmStatus, 0 /* Flags */);
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| 67 | if (rc == VERR_NOT_SUPPORTED)
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| 68 | {
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| 69 | /*
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| 70 | * To maintain backwards compatibility to older hosts which don't have
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| 71 | * VMMDevReportGuestStatus implemented we set the appropriate status via
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| 72 | * guest property to have at least something.
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| 73 | */
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| 74 | #ifdef VBOX_WITH_GUEST_PROPS
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| 75 | HGCMCLIENTID idClient = 0;
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| 76 | rc = VbglR3GuestPropConnect(&idClient);
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| 77 | if (RT_SUCCESS(rc))
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| 78 | {
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| 79 | const char *pszStatus;
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| 80 | switch (enmStatus)
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| 81 | {
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| 82 | case VBoxGuestFacilityStatus_Inactive: pszStatus = "Inactive"; break;
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| 83 | case VBoxGuestFacilityStatus_Paused: pszStatus = "Disabled"; break;
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| 84 | case VBoxGuestFacilityStatus_PreInit: pszStatus = "PreInit"; break;
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| 85 | case VBoxGuestFacilityStatus_Init: pszStatus = "Init"; break;
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| 86 | case VBoxGuestFacilityStatus_Active: pszStatus = "Active"; break;
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| 87 | case VBoxGuestFacilityStatus_Terminating: pszStatus = "Terminating"; break;
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| 88 | case VBoxGuestFacilityStatus_Terminated: pszStatus = "Terminated"; break;
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| 89 | case VBoxGuestFacilityStatus_Failed: pszStatus = "Failed"; break;
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| 90 | default: pszStatus = NULL;
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| 91 | }
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| 92 | if (pszStatus)
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| 93 | {
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| 94 | /*
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| 95 | * Use TRANSRESET when possible, fall back to TRANSIENT
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| 96 | * (generally sufficient unless the guest misbehaves).
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| 97 | */
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| 98 | static const char s_szPath[] = "/VirtualBox/GuestInfo/OS/AutoLogonStatus";
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| 99 | rc = VbglR3GuestPropWrite(idClient, s_szPath, pszStatus, "TRANSRESET");
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| 100 | if (rc == VERR_PARSE_ERROR)
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| 101 | rc = VbglR3GuestPropWrite(idClient, s_szPath, pszStatus, "TRANSIENT");
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| 102 | }
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| 103 | else
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| 104 | rc = VERR_INVALID_PARAMETER;
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| 105 |
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| 106 | VbglR3GuestPropDisconnect(idClient);
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| 107 | }
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| 108 | #endif
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| 109 | }
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| 110 |
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| 111 | s_enmLastStatus = enmStatus;
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| 112 | }
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| 113 | return VINF_SUCCESS;
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| 114 | }
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| 115 |
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| 116 |
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| 117 | /**
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| 118 | * Detects whether our process is running in a remote session or not.
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| 119 | *
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| 120 | * @return bool true if running in a remote session, false if not.
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| 121 | */
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| 122 | VBGLR3DECL(bool) VbglR3AutoLogonIsRemoteSession(void)
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| 123 | {
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| 124 | #ifdef RT_OS_WINDOWS
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| 125 | return GetSystemMetrics(SM_REMOTESESSION) != 0 ? true : false;
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| 126 | #else
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| 127 | return false; /* Not implemented. */
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| 128 | #endif
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| 129 | }
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| 130 |
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