1 | /* $Id: UIDnDHandler.cpp 100347 2023-07-03 13:09:08Z vboxsync $ */
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2 | /** @file
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3 | * VBox Qt GUI - UIDnDHandler class implementation.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2011-2023 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * SPDX-License-Identifier: GPL-3.0-only
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26 | */
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27 |
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28 | /* Qt includes: */
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29 | #include <QApplication>
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30 | #include <QDrag>
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31 | #include <QKeyEvent>
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32 | #include <QStringList>
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33 | #include <QTimer>
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34 | #include <QUrl>
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35 | #include <QWidget>
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36 |
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37 | /* VirtualBox interface declarations: */
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38 | #include <VBox/com/VirtualBox.h>
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39 |
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40 | /* GUI includes: */
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41 | #include "UIDnDHandler.h"
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42 | #ifdef VBOX_WITH_DRAG_AND_DROP_GH
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43 | #include "CDnDSource.h"
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44 | #ifdef RT_OS_WINDOWS
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45 | # include "UIDnDDataObject_win.h"
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46 | # include "UIDnDDropSource_win.h"
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47 | #endif
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48 | #include "UIDnDMIMEData.h"
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49 | #endif /* VBOX_WITH_DRAG_AND_DROP_GH */
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50 | #include "UIMachine.h"
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51 | #include "UIMessageCenter.h"
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52 | #include "UISession.h"
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53 |
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54 | /* COM includes: */
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55 | #include "CConsole.h"
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56 | #include "CGuest.h"
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57 | #include "CGuestDnDSource.h"
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58 | #include "CGuestDnDTarget.h"
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59 | #include "CSession.h"
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60 |
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61 | #ifdef LOG_GROUP
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62 | #undef LOG_GROUP
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63 | #endif
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64 | #define LOG_GROUP LOG_GROUP_GUEST_DND
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65 | #include <VBox/log.h>
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66 | #include <iprt/err.h>
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67 |
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68 | #if 0
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69 | # ifdef DEBUG
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70 | # include <QTextStream>
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71 | # include <QFile>
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72 | /** Enable this to log debug output of a Qt debug build to a file defined by DEBUG_DND_QT_LOGFILE. */
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73 | # define DEBUG_DND_QT
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74 | # ifdef RT_OS_WINDOWS
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75 | # define DEBUG_DND_QT_LOGFILE "c:\\temp\\VBoxQt.log"
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76 | # else
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77 | # define DEBUG_DND_QT_LOGFILE "/var/tmp/vboxqt.log"
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78 | # endif
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79 | # endif /* DEBUG */
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80 | #endif
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81 |
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82 |
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83 | UIDnDHandler::UIDnDHandler(UIMachine *pMachine, QWidget *pParent)
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84 | : m_pMachine(pMachine)
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85 | , m_pParent(pParent)
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86 | , m_fDataRetrieved(false)
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87 | #ifdef RT_OS_WINDOWS
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88 | , m_dwIntegrityLevel(0)
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89 | #else
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90 | , m_pMIMEData(NULL)
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91 | #endif
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92 | {
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93 | AssertPtr(m_pMachine);
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94 | if (m_pMachine)
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95 | {
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96 | CGuest comGuest = m_pMachine->uisession()->guest();
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97 | if (comGuest.isNotNull())
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98 | {
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99 | m_dndSource = static_cast<CDnDSource>(comGuest.GetDnDSource());
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100 | m_dndTarget = static_cast<CDnDTarget>(comGuest.GetDnDTarget());
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101 | }
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102 | }
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103 | }
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104 |
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105 | UIDnDHandler::~UIDnDHandler(void)
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106 | {
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107 | }
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108 |
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109 | /*
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110 | * Frontend -> Target.
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111 | */
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112 |
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113 | Qt::DropAction UIDnDHandler::dragEnter(ulong screenID, int x, int y,
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114 | Qt::DropAction proposedAction, Qt::DropActions possibleActions,
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115 | const QMimeData *pMimeData)
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116 | {
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117 | LogFlowFunc(("screenID=%RU32, x=%d, y=%d, action=%ld\n", screenID, x, y, toVBoxDnDAction(proposedAction)));
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118 |
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119 | /* Ask the guest for starting a DnD event. */
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120 | KDnDAction result = m_dndTarget.Enter(screenID,
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121 | x,
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122 | y,
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123 | toVBoxDnDAction(proposedAction),
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124 | toVBoxDnDActions(possibleActions),
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125 | pMimeData->formats().toVector());
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126 | if (m_dndTarget.isOk())
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127 | {
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128 | return toQtDnDAction(result);
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129 | }
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130 |
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131 | msgCenter().cannotDropDataToGuest(m_dndTarget, m_pParent);
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132 | return Qt::IgnoreAction;
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133 | }
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134 |
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135 | Qt::DropAction UIDnDHandler::dragMove(ulong screenID, int x, int y,
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136 | Qt::DropAction proposedAction, Qt::DropActions possibleActions,
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137 | const QMimeData *pMimeData)
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138 | {
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139 | LogFlowFunc(("screenID=%RU32, x=%d, y=%d, action=%ld\n", screenID, x, y, toVBoxDnDAction(proposedAction)));
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140 |
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141 | if (!m_dndTarget.isOk()) /* Don't try any further if we got an error before. */
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142 | return Qt::IgnoreAction;
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143 |
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144 | /* Notify the guest that the mouse has been moved while doing
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145 | * a drag'n drop operation. */
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146 | KDnDAction result = m_dndTarget.Move(screenID,
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147 | x,
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148 | y,
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149 | toVBoxDnDAction(proposedAction),
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150 | toVBoxDnDActions(possibleActions),
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151 | pMimeData->formats().toVector());
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152 | if (m_dndTarget.isOk())
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153 | return toQtDnDAction(result);
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154 |
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155 | msgCenter().cannotDropDataToGuest(m_dndTarget, m_pParent);
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156 | return Qt::IgnoreAction;
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157 | }
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158 |
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159 | Qt::DropAction UIDnDHandler::dragDrop(ulong screenID, int x, int y,
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160 | Qt::DropAction proposedAction, Qt::DropActions possibleActions,
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161 | const QMimeData *pMimeData)
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162 | {
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163 | LogFlowFunc(("screenID=%RU32, x=%d, y=%d, action=%ld\n", screenID, x, y, toVBoxDnDAction(proposedAction)));
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164 |
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165 | if (!m_dndTarget.isOk()) /* Don't try any further if we got an error before. */
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166 | return Qt::IgnoreAction;
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167 |
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168 | /* The format the guest requests. */
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169 | QString strFormat;
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170 | /* Ask the guest for dropping data. */
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171 | KDnDAction enmResult = m_dndTarget.Drop(screenID,
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172 | x,
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173 | y,
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174 | toVBoxDnDAction(proposedAction),
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175 | toVBoxDnDActions(possibleActions),
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176 | pMimeData->formats().toVector(), strFormat);
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177 | if (!m_dndTarget.isOk())
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178 | {
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179 | msgCenter().cannotDropDataToGuest(m_dndTarget, m_pParent);
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180 | }
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181 | else if (enmResult != KDnDAction_Ignore) /* Has the guest accepted the drop event? */
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182 | {
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183 | LogRel2(("DnD: Guest requested format '%s'\n", strFormat.toUtf8().constData()));
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184 | LogRel2(("DnD: The host offered %d formats:\n", pMimeData->formats().size()));
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185 |
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186 | #if 0
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187 | QStringList::const_iterator itFmt = pMimeData->formats().constBegin();
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188 | while (itFmt != pMimeData->formats().constEnd())
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189 | {
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190 | LogRel2(("DnD:\t'%s'\n", (*itFmt).toUtf8().constData()));
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191 | itFmt++;
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192 | }
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193 | #endif
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194 | QByteArray arrBytes;
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195 |
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196 | /*
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197 | * Does the host support the format requested by the guest?
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198 | * Lookup the format in the MIME data object.
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199 | */
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200 | AssertPtr(pMimeData);
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201 | if (pMimeData->formats().indexOf(strFormat) >= 0)
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202 | {
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203 | arrBytes = pMimeData->data(strFormat);
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204 | Assert(!arrBytes.isEmpty());
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205 | }
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206 | /*
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207 | * The host does not support the format requested by the guest.
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208 | * This can happen if the host wants to send plan text, for example, but
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209 | * the guest requested something else, e.g. an URI list.
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210 | *
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211 | * In that case dictate the guest to use a fixed format from the host,
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212 | * so instead returning the requested URI list, return the original
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213 | * data format from the host. The guest has to try to deal with that then.
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214 | **/
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215 | else
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216 | {
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217 | if (pMimeData->hasText())
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218 | {
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219 | LogRel2(("DnD: Converting data to text ...\n"));
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220 | arrBytes = pMimeData->text().toUtf8();
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221 | strFormat = "text/plain;charset=utf-8";
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222 | }
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223 | else
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224 | {
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225 | LogRel(("DnD: Host formats did not offer a matching format for the guest, skipping\n"));
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226 | enmResult = KDnDAction_Ignore;
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227 | }
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228 | }
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229 |
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230 | if (arrBytes.size()) /* Anything to send? */
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231 | {
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232 | /* Convert data to a vector. */
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233 | QVector<uint8_t> vecData(arrBytes.size()); /** @todo Can this throw or anything? */
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234 | AssertReleaseMsg(vecData.size() == arrBytes.size(), ("Drag and drop format buffer size does not match"));
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235 | memcpy(vecData.data(), arrBytes.constData(), arrBytes.size());
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236 |
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237 | /* Send data to the guest. */
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238 | LogRel2(("DnD: Host is sending %d bytes of data as '%s'\n", vecData.size(), strFormat.toUtf8().constData()));
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239 | CProgress progress = m_dndTarget.SendData(screenID, strFormat, vecData);
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240 |
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241 | if (m_dndTarget.isOk())
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242 | {
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243 | msgCenter().showModalProgressDialog(progress,
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244 | tr("Dropping data ..."), ":/progress_dnd_hg_90px.png",
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245 | m_pParent);
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246 |
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247 | LogFlowFunc(("Transfer fCompleted=%RTbool, fCanceled=%RTbool, hr=%Rhrc\n",
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248 | progress.GetCompleted(), progress.GetCanceled(), progress.GetResultCode()));
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249 |
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250 | BOOL fCanceled = progress.GetCanceled();
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251 | if ( !fCanceled
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252 | && ( !progress.isOk()
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253 | || progress.GetResultCode() != 0))
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254 | {
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255 | msgCenter().cannotDropDataToGuest(progress, m_pParent);
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256 | enmResult = KDnDAction_Ignore;
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257 | }
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258 | }
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259 | else
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260 | {
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261 | msgCenter().cannotDropDataToGuest(m_dndTarget, m_pParent);
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262 | enmResult = KDnDAction_Ignore;
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263 | }
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264 | }
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265 | else /* Error. */
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266 | enmResult = KDnDAction_Ignore;
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267 | }
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268 |
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269 | return toQtDnDAction(enmResult);
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270 | }
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271 |
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272 | void UIDnDHandler::dragLeave(ulong screenID)
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273 | {
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274 | LogFlowFunc(("screenID=%RU32\n", screenID));
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275 |
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276 | if (!m_dndTarget.isOk()) /* Don't try any further if we got an error before. */
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277 | return;
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278 |
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279 | m_dndTarget.Leave(screenID);
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280 | if (m_dndTarget.isOk())
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281 | return;
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282 |
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283 | msgCenter().cannotDropDataToGuest(m_dndTarget, m_pParent);
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284 | return;
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285 | }
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286 |
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287 | #ifdef DEBUG_DND_QT
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288 | QTextStream *g_pStrmLogQt = NULL; /* Output stream for Qt debug logging. */
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289 |
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290 | /* static */
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291 | void UIDnDHandler::debugOutputQt(QtMsgType type, const QMessageLogContext &context, const QString &strMessage)
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292 | {
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293 | QString strMsg;
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294 | switch (type)
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295 | {
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296 | case QtWarningMsg:
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297 | strMsg += "[W]";
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298 | break;
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299 | case QtCriticalMsg:
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300 | strMsg += "[C]";
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301 | break;
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302 | case QtFatalMsg:
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303 | strMsg += "[F]";
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304 | break;
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305 | case QtDebugMsg:
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306 | default:
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307 | strMsg += "[D]";
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308 | break;
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309 | }
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310 |
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311 | if (g_pStrmLogQt)
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312 | (*g_pStrmLogQt) << strMsg << " " << strMessage << endl;
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313 | }
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314 | #endif /* DEBUG_DND_QT */
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315 |
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316 | /*
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317 | * Source -> Frontend.
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318 | */
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319 |
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320 | int UIDnDHandler::dragStartInternal(const QStringList &lstFormats,
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321 | Qt::DropAction defAction, Qt::DropActions actions)
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322 | {
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323 | RT_NOREF(defAction);
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324 |
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325 | int rc = VINF_SUCCESS;
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326 |
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327 | #ifdef VBOX_WITH_DRAG_AND_DROP_GH
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328 |
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329 | LogFlowFunc(("defAction=0x%x\n", defAction));
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330 | LogFlowFunc(("Number of formats: %d\n", lstFormats.size()));
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331 | # ifdef DEBUG
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332 | for (int i = 0; i < lstFormats.size(); i++)
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333 | LogFlowFunc(("\tFormat %d: %s\n", i, lstFormats.at(i).toUtf8().constData()));
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334 | # endif
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335 |
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336 | # ifdef DEBUG_DND_QT
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337 | QFile *pFileDebugQt = new QFile(DEBUG_DND_QT_LOGFILE);
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338 | if (pFileDebugQt->open(QIODevice::WriteOnly | QIODevice::Append | QIODevice::Text))
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339 | {
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340 | g_pStrmLogQt = new QTextStream(pFileDebugQt);
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341 |
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342 | qInstallMessageHandler(UIDnDHandler::debugOutputQt);
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343 | qDebug("========================================================================");
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344 | }
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345 | # endif
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346 |
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347 | # ifdef RT_OS_WINDOWS
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348 | UIDnDDataObject *pDataObject = new UIDnDDataObject(this, lstFormats);
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349 | if (!pDataObject)
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350 | return VERR_NO_MEMORY;
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351 | UIDnDDropSource *pDropSource = new UIDnDDropSource(m_pParent, pDataObject);
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352 | if (!pDropSource)
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353 | return VERR_NO_MEMORY;
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354 |
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355 | DWORD dwOKEffects = DROPEFFECT_NONE;
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356 | if (actions)
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357 | {
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358 | if (actions & Qt::CopyAction)
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359 | dwOKEffects |= DROPEFFECT_COPY;
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360 | if (actions & Qt::MoveAction)
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361 | dwOKEffects |= DROPEFFECT_MOVE;
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362 | if (actions & Qt::LinkAction)
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363 | dwOKEffects |= DROPEFFECT_LINK;
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364 | }
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365 |
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366 | DWORD dwEffect;
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367 | LogRel2(("DnD: Starting drag and drop operation\n", dwOKEffects));
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368 | LogRel3(("DnD: DoDragDrop dwOKEffects=0x%x\n", dwOKEffects));
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369 | HRESULT hr = ::DoDragDrop(pDataObject, pDropSource, dwOKEffects, &dwEffect);
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370 | LogRel3(("DnD: DoDragDrop ended with hr=%Rhrc, dwEffect=%RI32\n", hr, dwEffect));
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371 |
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372 | if (pDropSource)
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373 | pDropSource->Release();
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374 | if (pDataObject)
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375 | pDataObject->Release();
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376 |
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377 | # else /* !RT_OS_WINDOWS */
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378 |
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379 | QDrag *pDrag = new QDrag(m_pParent);
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380 | if (!pDrag)
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381 | return VERR_NO_MEMORY;
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382 |
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383 | /* Note: pMData is transferred to the QDrag object, so no need for deletion. */
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384 | m_pMIMEData = new UIDnDMIMEData(this, lstFormats, defAction, actions);
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385 | if (!m_pMIMEData)
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386 | {
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387 | delete pDrag;
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388 | return VERR_NO_MEMORY;
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389 | }
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390 |
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391 | /* Inform the MIME data object of any changes in the current action. */
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392 | connect(pDrag, &QDrag::actionChanged,
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393 | m_pMIMEData, &UIDnDMIMEData::sltDropActionChanged);
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394 |
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395 | /* Invoke this handler as data needs to be retrieved by our derived QMimeData class. */
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396 | connect(m_pMIMEData, &UIDnDMIMEData::sigGetData,
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397 | this, &UIDnDHandler::sltGetData);
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398 |
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399 | /*
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400 | * Set MIME data object and start the (modal) drag'n drop operation on the host.
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401 | * This does not block Qt's event loop, however (on Windows it would).
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402 | */
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403 | pDrag->setMimeData(m_pMIMEData);
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404 | LogFlowFunc(("Executing modal drag'n drop operation ...\n"));
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405 |
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406 | Qt::DropAction dropAction;
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407 | # ifdef RT_OS_DARWIN
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408 | # ifdef VBOX_WITH_DRAG_AND_DROP_PROMISES
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409 | dropAction = pDrag->exec(actions, defAction);
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410 | # else
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411 | /* Without having VBOX_WITH_DRAG_AND_DROP_PROMISES enabled drag and drop
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412 | * will not work on OS X! It also requires some handcrafted patches within Qt
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413 | * (which also needs VBOX_WITH_DRAG_AND_DROP_PROMISES set there). */
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414 | dropAction = Qt::IgnoreAction;
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415 | rc = VERR_NOT_SUPPORTED;
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416 | # endif
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417 | # else /* !RT_OS_DARWIN */
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418 | dropAction = pDrag->exec(actions, defAction);
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419 | # endif /* RT_OS_DARWIN */
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420 | LogRel3(("DnD: Ended with dropAction=%ld\n", UIDnDHandler::toVBoxDnDAction(dropAction)));
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421 |
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422 | /* Note: The UIDnDMimeData object will not be not accessible here anymore,
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423 | * since QDrag had its ownership and deleted it after the (blocking)
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424 | * QDrag::exec() call. */
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425 |
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426 | /* pDrag will be cleaned up by Qt automatically. */
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427 |
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428 | # endif /* !RT_OS_WINDOWS */
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429 |
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430 | reset();
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431 |
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432 | #ifdef DEBUG_DND_QT
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433 | if (g_pStrmLogQt)
|
---|
434 | {
|
---|
435 | delete g_pStrmLogQt;
|
---|
436 | g_pStrmLogQt = NULL;
|
---|
437 | }
|
---|
438 |
|
---|
439 | if (pFileDebugQt)
|
---|
440 | {
|
---|
441 | pFileDebugQt->close();
|
---|
442 | delete pFileDebugQt;
|
---|
443 | }
|
---|
444 | #endif /* DEBUG_DND_QT */
|
---|
445 |
|
---|
446 | #else /* !VBOX_WITH_DRAG_AND_DROP_GH */
|
---|
447 | rc = VERR_NOT_SUPPORTED;
|
---|
448 | #endif /* VBOX_WITH_DRAG_AND_DROP_GH */
|
---|
449 |
|
---|
450 | LogFlowFuncLeaveRC(rc);
|
---|
451 | return rc;
|
---|
452 | }
|
---|
453 |
|
---|
454 | /**
|
---|
455 | * Checks whether a G->H drag'n drop operation is pending.
|
---|
456 | *
|
---|
457 | * @returns VBox status code.
|
---|
458 | * @retval VERR_NO_DATA if no operation is pending or an error has occurred.
|
---|
459 | * @retval VERR_NOT_SUPPORTED if G->H operations are not supported.
|
---|
460 | * @param screenID Screen ID to check pending status.
|
---|
461 | */
|
---|
462 | int UIDnDHandler::dragCheckPending(ulong screenID)
|
---|
463 | {
|
---|
464 | int rc;
|
---|
465 | #ifdef VBOX_WITH_DRAG_AND_DROP_GH
|
---|
466 | LogFlowFunc(("screenID=%RU32\n", screenID));
|
---|
467 |
|
---|
468 | /**
|
---|
469 | * How this works: Source is asking the target if there is any DnD
|
---|
470 | * operation pending, when the mouse leaves the guest window. On
|
---|
471 | * return there is some info about a running DnD operation
|
---|
472 | * (or defaultAction is KDnDAction_Ignore if not). With
|
---|
473 | * this information we create a Qt QDrag object with our own QMimeType
|
---|
474 | * implementation and call exec.
|
---|
475 | *
|
---|
476 | * Note: This function *blocks* until the actual drag'n drop operation
|
---|
477 | * has been finished (successfully or not)!
|
---|
478 | */
|
---|
479 |
|
---|
480 | /* Clear our current data set. */
|
---|
481 | m_dataSource.lstFormats.clear();
|
---|
482 | m_dataSource.vecActions.clear();
|
---|
483 |
|
---|
484 | /* Ask the guest if there is a drag and drop operation pending (on the guest). */
|
---|
485 | QVector<QString> vecFormats;
|
---|
486 | m_dataSource.defaultAction = m_dndSource.DragIsPending(screenID, vecFormats, m_dataSource.vecActions);
|
---|
487 | if (!m_dndSource.isOk())
|
---|
488 | {
|
---|
489 | msgCenter().cannotDropDataToHost(m_dndSource, m_pParent);
|
---|
490 | return VERR_NO_DATA;
|
---|
491 | }
|
---|
492 |
|
---|
493 | LogRelMax3(10, ("DnD: Default action is: 0x%x\n", m_dataSource.defaultAction));
|
---|
494 | LogRelMax3(10, ("DnD: Number of supported guest actions: %d\n", m_dataSource.vecActions.size()));
|
---|
495 | for (int i = 0; i < m_dataSource.vecActions.size(); i++)
|
---|
496 | LogRelMax3(10, ("DnD: \tAction %d: 0x%x\n", i, m_dataSource.vecActions.at(i)));
|
---|
497 |
|
---|
498 | LogRelMax3(10, ("DnD: Number of supported guest formats: %d\n", vecFormats.size()));
|
---|
499 | for (int i = 0; i < vecFormats.size(); i++)
|
---|
500 | {
|
---|
501 | const QString &strFmtGuest = vecFormats.at(i);
|
---|
502 | LogRelMax3(10, ("DnD: \tFormat %d: %s\n", i, strFmtGuest.toUtf8().constData()));
|
---|
503 | }
|
---|
504 |
|
---|
505 | LogFlowFunc(("defaultAction=0x%x, vecFormatsSize=%d, vecActionsSize=%d\n",
|
---|
506 | m_dataSource.defaultAction, vecFormats.size(), m_dataSource.vecActions.size()));
|
---|
507 |
|
---|
508 | if ( m_dataSource.defaultAction != KDnDAction_Ignore
|
---|
509 | && vecFormats.size())
|
---|
510 | {
|
---|
511 | for (int i = 0; i < vecFormats.size(); i++)
|
---|
512 | {
|
---|
513 | const QString &strFormat = vecFormats.at(i);
|
---|
514 | m_dataSource.lstFormats << strFormat;
|
---|
515 | }
|
---|
516 |
|
---|
517 | rc = VINF_SUCCESS; /* There's a valid pending drag and drop operation on the guest. */
|
---|
518 | }
|
---|
519 | else /* No format data from the guest arrived yet. */
|
---|
520 | rc = VERR_NO_DATA;
|
---|
521 |
|
---|
522 | #else /* !VBOX_WITH_DRAG_AND_DROP_GH */
|
---|
523 | RT_NOREF(screenID);
|
---|
524 | rc = VERR_NOT_SUPPORTED;
|
---|
525 | #endif /* VBOX_WITH_DRAG_AND_DROP_GH */
|
---|
526 |
|
---|
527 | LogFlowFuncLeaveRC(rc);
|
---|
528 | return rc;
|
---|
529 | }
|
---|
530 |
|
---|
531 | int UIDnDHandler::dragStart(ulong screenID)
|
---|
532 | {
|
---|
533 | int rc;
|
---|
534 | #ifdef VBOX_WITH_DRAG_AND_DROP_GH
|
---|
535 |
|
---|
536 | RT_NOREF(screenID);
|
---|
537 |
|
---|
538 | LogFlowFuncEnter();
|
---|
539 |
|
---|
540 | /* Sanity checks. */
|
---|
541 | if ( !m_dataSource.lstFormats.size()
|
---|
542 | || m_dataSource.defaultAction == KDnDAction_Ignore
|
---|
543 | || !m_dataSource.vecActions.size())
|
---|
544 | {
|
---|
545 | return VERR_INVALID_PARAMETER;
|
---|
546 | }
|
---|
547 |
|
---|
548 | rc = dragStartInternal(m_dataSource.lstFormats,
|
---|
549 | toQtDnDAction(m_dataSource.defaultAction), toQtDnDActions(m_dataSource.vecActions));
|
---|
550 |
|
---|
551 | #else /* !VBOX_WITH_DRAG_AND_DROP_GH */
|
---|
552 | RT_NOREF(screenID);
|
---|
553 | rc = VERR_NOT_SUPPORTED;
|
---|
554 | #endif /* VBOX_WITH_DRAG_AND_DROP_GH */
|
---|
555 |
|
---|
556 | LogFlowFuncLeaveRC(rc);
|
---|
557 | return rc;
|
---|
558 | }
|
---|
559 |
|
---|
560 | int UIDnDHandler::dragStop(ulong screenID)
|
---|
561 | {
|
---|
562 | RT_NOREF(screenID);
|
---|
563 | int rc;
|
---|
564 | #ifdef VBOX_WITH_DRAG_AND_DROP_GH
|
---|
565 | reset();
|
---|
566 | rc = VINF_SUCCESS;
|
---|
567 | #else /* !VBOX_WITH_DRAG_AND_DROP_GH */
|
---|
568 | rc = VERR_NOT_SUPPORTED;
|
---|
569 | #endif /* VBOX_WITH_DRAG_AND_DROP_GH */
|
---|
570 | LogFlowFuncLeaveRC(rc);
|
---|
571 | return rc;
|
---|
572 | }
|
---|
573 |
|
---|
574 | /**
|
---|
575 | * Initializes the drag'n drop UI handler.
|
---|
576 | *
|
---|
577 | * @returns VBox status code.
|
---|
578 | */
|
---|
579 | int UIDnDHandler::init(void)
|
---|
580 | {
|
---|
581 | int vrc;
|
---|
582 | #ifdef RT_OS_WINDOWS
|
---|
583 |
|
---|
584 | # define CASE_INTEGRITY_LEVEL(a_Level) \
|
---|
585 | case a_Level: \
|
---|
586 | LogRel(("DnD: User Interface Privilege Isolation (UIPI) is running with %s\n", #a_Level)); \
|
---|
587 | break;
|
---|
588 |
|
---|
589 | /*
|
---|
590 | * Assign and log the current process integrity interity level, so that we have a better chance of diagnosing issues
|
---|
591 | * when it comes to drag'n drop and UIPI (User Interface Privilege Isolation) -- a lower integrity level process
|
---|
592 | * cannot drag'n drop stuff to a higher integrity level one.
|
---|
593 | */
|
---|
594 | vrc = getProcessIntegrityLevel(&m_dwIntegrityLevel);
|
---|
595 | if (RT_SUCCESS(vrc))
|
---|
596 | {
|
---|
597 | switch (m_dwIntegrityLevel)
|
---|
598 | {
|
---|
599 | CASE_INTEGRITY_LEVEL(SECURITY_MANDATORY_UNTRUSTED_RID);
|
---|
600 | CASE_INTEGRITY_LEVEL(SECURITY_MANDATORY_LOW_RID);
|
---|
601 | CASE_INTEGRITY_LEVEL(SECURITY_MANDATORY_MEDIUM_RID);
|
---|
602 | CASE_INTEGRITY_LEVEL(SECURITY_MANDATORY_HIGH_RID);
|
---|
603 | CASE_INTEGRITY_LEVEL(SECURITY_MANDATORY_SYSTEM_RID);
|
---|
604 | CASE_INTEGRITY_LEVEL(SECURITY_MANDATORY_PROTECTED_PROCESS_RID);
|
---|
605 | default:
|
---|
606 | break;
|
---|
607 | }
|
---|
608 |
|
---|
609 | if (m_dwIntegrityLevel > SECURITY_MANDATORY_MEDIUM_RID)
|
---|
610 | LogRel(("DnD: Warning: The VM process' integrity level is higher than most regular processes on the system. "
|
---|
611 | "This means that drag'n drop most likely will not work with other applications!\n"));
|
---|
612 | }
|
---|
613 | else
|
---|
614 | LogRel(("DnD: Unable to retrieve process integrity level (%Rrc) -- please report this bug!\n", vrc));
|
---|
615 | # undef CASE_INTEGRITY_LEVEL
|
---|
616 |
|
---|
617 | #else /* ! RT_OS_WINDOWS */
|
---|
618 | vrc = VINF_SUCCESS;
|
---|
619 | #endif /* RT_OS_WINDOWS */
|
---|
620 |
|
---|
621 | return vrc;
|
---|
622 | }
|
---|
623 |
|
---|
624 | void UIDnDHandler::reset(void)
|
---|
625 | {
|
---|
626 | LogFlowFuncEnter();
|
---|
627 |
|
---|
628 | m_fDataRetrieved = false;
|
---|
629 |
|
---|
630 | #ifdef RT_OS_WINDOWS
|
---|
631 | m_dwIntegrityLevel = 0;
|
---|
632 | #endif
|
---|
633 | }
|
---|
634 |
|
---|
635 | #ifdef RT_OS_WINDOWS
|
---|
636 | /**
|
---|
637 | * Returns the process' current integrity level.
|
---|
638 | *
|
---|
639 | * @returns VBox status code.
|
---|
640 | * @param pdwIntegrityLevel Where to return the detected process integrity level on success.
|
---|
641 | */
|
---|
642 | /* static */
|
---|
643 | int UIDnDHandler::getProcessIntegrityLevel(DWORD *pdwIntegrityLevel)
|
---|
644 | {
|
---|
645 | AssertPtrReturn(pdwIntegrityLevel, VERR_INVALID_POINTER);
|
---|
646 |
|
---|
647 | int vrc = VINF_SUCCESS;
|
---|
648 |
|
---|
649 | # define PRINT_AND_ASSIGN_LAST_ERROR(a_Msg) \
|
---|
650 | { \
|
---|
651 | dwLastErr = GetLastError(); \
|
---|
652 | vrc = RTErrConvertFromWin32(dwLastErr); \
|
---|
653 | LogRel(("DnD: %s: %Rrc (%#x)\n", a_Msg, vrc, dwLastErr)); \
|
---|
654 | }
|
---|
655 |
|
---|
656 | DWORD dwLastErr = 0;
|
---|
657 |
|
---|
658 | DWORD cb;
|
---|
659 | HANDLE hToken;
|
---|
660 | if (!OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken))
|
---|
661 | {
|
---|
662 | PRINT_AND_ASSIGN_LAST_ERROR("OpenProcessToken failed");
|
---|
663 | return vrc;
|
---|
664 | }
|
---|
665 |
|
---|
666 | if ( !GetTokenInformation(hToken, TokenIntegrityLevel, NULL, 0, &cb)
|
---|
667 | && GetLastError() == ERROR_INSUFFICIENT_BUFFER)
|
---|
668 | {
|
---|
669 | PSID_AND_ATTRIBUTES pSidAndAttr = (PSID_AND_ATTRIBUTES)RTMemAlloc(cb);
|
---|
670 | if (GetTokenInformation(hToken, TokenIntegrityLevel, pSidAndAttr, cb, &cb))
|
---|
671 | {
|
---|
672 | *pdwIntegrityLevel = *GetSidSubAuthority(pSidAndAttr->Sid, *GetSidSubAuthorityCount(pSidAndAttr->Sid) - 1U);
|
---|
673 | }
|
---|
674 | else
|
---|
675 | PRINT_AND_ASSIGN_LAST_ERROR("GetTokenInformation(2) failed");
|
---|
676 | RTMemFree(pSidAndAttr);
|
---|
677 | }
|
---|
678 | else if ( GetLastError() == ERROR_INVALID_PARAMETER
|
---|
679 | || GetLastError() == ERROR_NOT_SUPPORTED)
|
---|
680 | {
|
---|
681 | /* Should never show, as we at least require Windows 7 nowadays on Windows hosts. */
|
---|
682 | PRINT_AND_ASSIGN_LAST_ERROR("Querying process integrity level not supported");
|
---|
683 | }
|
---|
684 | else
|
---|
685 | PRINT_AND_ASSIGN_LAST_ERROR("GetTokenInformation(1) failed");
|
---|
686 |
|
---|
687 | # undef PRINT_AND_ASSIGN_LAST_ERROR
|
---|
688 |
|
---|
689 | CloseHandle(hToken);
|
---|
690 | return vrc;
|
---|
691 | }
|
---|
692 | #endif /* RT_OS_WINDOWS */
|
---|
693 |
|
---|
694 | int UIDnDHandler::retrieveData( Qt::DropAction dropAction,
|
---|
695 | const QString &strMIMEType,
|
---|
696 | QVector<uint8_t> &vecData)
|
---|
697 | {
|
---|
698 | /** @todo r=andy Locking required? */
|
---|
699 |
|
---|
700 | if (!strMIMEType.compare("application/x-qt-mime-type-name", Qt::CaseInsensitive))
|
---|
701 | return VINF_SUCCESS;
|
---|
702 |
|
---|
703 | int rc;
|
---|
704 | if (!m_fDataRetrieved)
|
---|
705 | {
|
---|
706 | /*
|
---|
707 | * Retrieve the actual data from the guest.
|
---|
708 | */
|
---|
709 | rc = retrieveDataInternal(dropAction, strMIMEType, m_vecData);
|
---|
710 | if (RT_FAILURE(rc))
|
---|
711 | LogRel3(("DnD: Receiving data failed: %Rrc\n", rc));
|
---|
712 | else
|
---|
713 | m_fDataRetrieved = true;
|
---|
714 | }
|
---|
715 | else /* Data already received, supply cached version. */
|
---|
716 | rc = VINF_SUCCESS;
|
---|
717 |
|
---|
718 | if (RT_SUCCESS(rc))
|
---|
719 | vecData = m_vecData;
|
---|
720 |
|
---|
721 | return rc;
|
---|
722 | }
|
---|
723 |
|
---|
724 | int UIDnDHandler::retrieveData( Qt::DropAction dropAction,
|
---|
725 | const QString &strMIMEType,
|
---|
726 | QMetaType::Type vaType,
|
---|
727 | QVariant &vaData)
|
---|
728 | {
|
---|
729 | QVector<uint8_t> vecData;
|
---|
730 | int rc = retrieveData(dropAction, strMIMEType, vecData);
|
---|
731 | if (RT_SUCCESS(rc))
|
---|
732 | {
|
---|
733 | /* If no/an invalid variant is set, try to guess the variant type.
|
---|
734 | * This can happen on OS X. */
|
---|
735 | if (vaType == QMetaType::UnknownType)
|
---|
736 | vaType = UIDnDMIMEData::getMetaType(strMIMEType);
|
---|
737 |
|
---|
738 | rc = UIDnDMIMEData::getDataAsVariant(vecData, strMIMEType, vaType, vaData);
|
---|
739 | }
|
---|
740 |
|
---|
741 | LogFlowFuncLeaveRC(rc);
|
---|
742 | return rc;
|
---|
743 | }
|
---|
744 |
|
---|
745 | int UIDnDHandler::retrieveDataInternal( Qt::DropAction dropAction,
|
---|
746 | const QString &strMIMEType,
|
---|
747 | QVector<uint8_t> &vecData)
|
---|
748 | {
|
---|
749 | LogRel3(("DnD: Retrieving data from guest as '%s' (%d)\n", qPrintable(strMIMEType), dropAction));
|
---|
750 |
|
---|
751 | int rc = VINF_SUCCESS;
|
---|
752 |
|
---|
753 | /* Indicate to the guest that we have dropped the data on the host.
|
---|
754 | * The guest then will initiate the actual "drop" operation into our proxy on the guest. */
|
---|
755 | Assert(!m_dndSource.isNull());
|
---|
756 | CProgress progress = m_dndSource.Drop(strMIMEType,
|
---|
757 | UIDnDHandler::toVBoxDnDAction(dropAction));
|
---|
758 | LogFlowFunc(("Source: isOk=%RTbool\n", m_dndSource.isOk()));
|
---|
759 | if (m_dndSource.isOk())
|
---|
760 | {
|
---|
761 | /* Send a mouse event with released mouse buttons into the guest that triggers
|
---|
762 | * the "drop" event in our proxy window on the guest. */
|
---|
763 | m_pMachine->putMouseEvent(0, 0, 0, 0, 0);
|
---|
764 |
|
---|
765 | msgCenter().showModalProgressDialog(progress,
|
---|
766 | tr("Retrieving data ..."), ":/progress_dnd_gh_90px.png",
|
---|
767 | m_pParent);
|
---|
768 |
|
---|
769 | LogFlowFunc(("Progress: fCanceled=%RTbool, fCompleted=%RTbool, isOk=%RTbool, hrc=%Rhrc\n",
|
---|
770 | progress.GetCanceled(), progress.GetCompleted(), progress.isOk(), progress.GetResultCode()));
|
---|
771 |
|
---|
772 | if (!progress.GetCanceled())
|
---|
773 | {
|
---|
774 | rc = ( progress.isOk()
|
---|
775 | && progress.GetResultCode() == 0)
|
---|
776 | ? VINF_SUCCESS : VERR_GENERAL_FAILURE; /** @todo Fudge; do a GetResultCode() to rc translation. */
|
---|
777 |
|
---|
778 | if (RT_SUCCESS(rc))
|
---|
779 | {
|
---|
780 | /* After we successfully retrieved data from the source we query it from Main. */
|
---|
781 | vecData = m_dndSource.ReceiveData(); /** @todo QVector.size() is "int" only!? */
|
---|
782 | if (m_dndSource.isOk())
|
---|
783 | {
|
---|
784 | if (vecData.isEmpty())
|
---|
785 | rc = VERR_NO_DATA;
|
---|
786 | }
|
---|
787 | else
|
---|
788 | {
|
---|
789 | msgCenter().cannotDropDataToHost(m_dndSource, m_pParent);
|
---|
790 | rc = VERR_GENERAL_FAILURE; /** @todo Fudge; do a GetResultCode() to rc translation. */
|
---|
791 | }
|
---|
792 | }
|
---|
793 | else
|
---|
794 | msgCenter().cannotDropDataToHost(progress, m_pParent);
|
---|
795 | }
|
---|
796 | else /* Don't pop up a message. */
|
---|
797 | rc = VERR_CANCELLED;
|
---|
798 | }
|
---|
799 | else
|
---|
800 | {
|
---|
801 | msgCenter().cannotDropDataToHost(m_dndSource, m_pParent);
|
---|
802 | rc = VERR_GENERAL_FAILURE; /** @todo Fudge; do a GetResultCode() to rc translation. */
|
---|
803 | }
|
---|
804 |
|
---|
805 | LogFlowFuncLeaveRC(rc);
|
---|
806 | return rc;
|
---|
807 | }
|
---|
808 |
|
---|
809 | int UIDnDHandler::sltGetData( Qt::DropAction dropAction,
|
---|
810 | const QString &strMIMEType,
|
---|
811 | QMetaType::Type vaType,
|
---|
812 | QVariant &vaData)
|
---|
813 | {
|
---|
814 | int rc = retrieveData(dropAction, strMIMEType, vaType, vaData);
|
---|
815 | LogFlowFuncLeaveRC(rc);
|
---|
816 | return rc;
|
---|
817 | }
|
---|
818 |
|
---|
819 | /*
|
---|
820 | * Drag and Drop helper methods
|
---|
821 | */
|
---|
822 |
|
---|
823 | /**
|
---|
824 | * Static helper function to convert a Qt drop action to an internal DnD drop action.
|
---|
825 | *
|
---|
826 | * @returns Converted internal drop action.
|
---|
827 | * @param action Qt drop action to convert.
|
---|
828 | */
|
---|
829 | /* static */
|
---|
830 | KDnDAction UIDnDHandler::toVBoxDnDAction(Qt::DropAction action)
|
---|
831 | {
|
---|
832 | if (action == Qt::CopyAction)
|
---|
833 | return KDnDAction_Copy;
|
---|
834 | if (action == Qt::MoveAction)
|
---|
835 | return KDnDAction_Move;
|
---|
836 | if (action == Qt::LinkAction)
|
---|
837 | return KDnDAction_Link;
|
---|
838 |
|
---|
839 | return KDnDAction_Ignore;
|
---|
840 | }
|
---|
841 |
|
---|
842 | /**
|
---|
843 | * Static helper function to convert Qt drop actions to internal DnD drop actions.
|
---|
844 | *
|
---|
845 | * @returns Vector of converted internal drop actions.
|
---|
846 | * @param actions Qt drop actions to convert.
|
---|
847 | */
|
---|
848 | /* static */
|
---|
849 | QVector<KDnDAction> UIDnDHandler::toVBoxDnDActions(Qt::DropActions actions)
|
---|
850 | {
|
---|
851 | QVector<KDnDAction> vbActions;
|
---|
852 | if (actions.testFlag(Qt::IgnoreAction))
|
---|
853 | vbActions << KDnDAction_Ignore;
|
---|
854 | if (actions.testFlag(Qt::CopyAction))
|
---|
855 | vbActions << KDnDAction_Copy;
|
---|
856 | if (actions.testFlag(Qt::MoveAction))
|
---|
857 | vbActions << KDnDAction_Move;
|
---|
858 | if (actions.testFlag(Qt::LinkAction))
|
---|
859 | vbActions << KDnDAction_Link;
|
---|
860 |
|
---|
861 | return vbActions;
|
---|
862 | }
|
---|
863 |
|
---|
864 | /**
|
---|
865 | * Static helper function to convert an internal drop action to a Qt drop action.
|
---|
866 | *
|
---|
867 | * @returns Converted Qt drop action.
|
---|
868 | * @param actions Internal drop action to convert.
|
---|
869 | */
|
---|
870 | /* static */
|
---|
871 | Qt::DropAction UIDnDHandler::toQtDnDAction(KDnDAction action)
|
---|
872 | {
|
---|
873 | Qt::DropAction dropAct = Qt::IgnoreAction;
|
---|
874 | if (action == KDnDAction_Copy)
|
---|
875 | dropAct = Qt::CopyAction;
|
---|
876 | if (action == KDnDAction_Move)
|
---|
877 | dropAct = Qt::MoveAction;
|
---|
878 | if (action == KDnDAction_Link)
|
---|
879 | dropAct = Qt::LinkAction;
|
---|
880 |
|
---|
881 | LogFlowFunc(("dropAct=0x%x\n", dropAct));
|
---|
882 | return dropAct;
|
---|
883 | }
|
---|
884 |
|
---|
885 | /**
|
---|
886 | * Static helper function to convert a vector of internal drop actions to Qt drop actions.
|
---|
887 | *
|
---|
888 | * @returns Converted Qt drop actions.
|
---|
889 | * @param vecActions Internal drop actions to convert.
|
---|
890 | */
|
---|
891 | /* static */
|
---|
892 | Qt::DropActions UIDnDHandler::toQtDnDActions(const QVector<KDnDAction> &vecActions)
|
---|
893 | {
|
---|
894 | Qt::DropActions dropActs = Qt::IgnoreAction;
|
---|
895 | for (int i = 0; i < vecActions.size(); i++)
|
---|
896 | {
|
---|
897 | switch (vecActions.at(i))
|
---|
898 | {
|
---|
899 | case KDnDAction_Ignore:
|
---|
900 | dropActs |= Qt::IgnoreAction;
|
---|
901 | break;
|
---|
902 | case KDnDAction_Copy:
|
---|
903 | dropActs |= Qt::CopyAction;
|
---|
904 | break;
|
---|
905 | case KDnDAction_Move:
|
---|
906 | dropActs |= Qt::MoveAction;
|
---|
907 | break;
|
---|
908 | case KDnDAction_Link:
|
---|
909 | dropActs |= Qt::LinkAction;
|
---|
910 | break;
|
---|
911 | default:
|
---|
912 | break;
|
---|
913 | }
|
---|
914 | }
|
---|
915 |
|
---|
916 | LogFlowFunc(("dropActions=0x%x\n", int(dropActs)));
|
---|
917 | return dropActs;
|
---|
918 | }
|
---|