1 | /* $Id: GuestDnDPrivate.h 91312 2021-09-20 11:06:57Z vboxsync $ */
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2 | /** @file
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3 | * Private guest drag and drop code, used by GuestDnDTarget +
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4 | * GuestDnDSource.
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5 | */
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6 |
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7 | /*
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8 | * Copyright (C) 2011-2020 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 |
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19 | #ifndef MAIN_INCLUDED_GuestDnDPrivate_h
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20 | #define MAIN_INCLUDED_GuestDnDPrivate_h
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21 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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22 | # pragma once
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23 | #endif
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24 |
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25 | #include <iprt/dir.h>
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26 | #include <iprt/file.h>
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27 | #include <iprt/path.h>
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28 |
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29 | #include <VBox/hgcmsvc.h> /* For PVBOXHGCMSVCPARM. */
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30 | #include <VBox/GuestHost/DragAndDrop.h>
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31 | #include <VBox/GuestHost/DragAndDropDefs.h>
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32 | #include <VBox/HostServices/DragAndDropSvc.h>
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33 |
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34 | /**
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35 | * Forward prototype declarations.
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36 | */
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37 | class Guest;
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38 | class GuestDnDBase;
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39 | class GuestDnDState;
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40 | class GuestDnDSource;
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41 | class GuestDnDTarget;
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42 | class Progress;
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43 |
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44 | /**
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45 | * Type definitions.
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46 | */
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47 |
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48 | /** List (vector) of MIME types. */
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49 | typedef std::vector<com::Utf8Str> GuestDnDMIMEList;
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50 |
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51 | /**
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52 | * Class to handle a guest DnD callback event.
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53 | */
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54 | class GuestDnDCallbackEvent
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55 | {
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56 | public:
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57 |
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58 | GuestDnDCallbackEvent(void)
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59 | : m_SemEvent(NIL_RTSEMEVENT)
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60 | , m_Rc(VINF_SUCCESS) { }
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61 |
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62 | virtual ~GuestDnDCallbackEvent(void);
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63 |
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64 | public:
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65 |
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66 | int Reset(void);
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67 |
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68 | int Notify(int rc = VINF_SUCCESS);
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69 |
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70 | int Result(void) const { return m_Rc; }
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71 |
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72 | int Wait(RTMSINTERVAL msTimeout);
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73 |
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74 | protected:
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75 |
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76 | /** Event semaphore to notify on error/completion. */
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77 | RTSEMEVENT m_SemEvent;
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78 | /** Callback result. */
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79 | int m_Rc;
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80 | };
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81 |
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82 | /**
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83 | * Struct for handling the (raw) meta data.
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84 | */
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85 | struct GuestDnDMetaData
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86 | {
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87 | GuestDnDMetaData(void)
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88 | : pvData(NULL)
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89 | , cbData(0)
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90 | , cbAllocated(0)
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91 | , cbAnnounced(0) { }
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92 |
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93 | virtual ~GuestDnDMetaData(void)
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94 | {
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95 | reset();
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96 | }
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97 |
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98 | /**
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99 | * Adds new meta data.
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100 | *
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101 | * @returns New (total) meta data size in bytes.
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102 | * @param pvDataAdd Pointer of data to add.
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103 | * @param cbDataAdd Size (in bytes) of data to add.
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104 | */
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105 | size_t add(const void *pvDataAdd, size_t cbDataAdd)
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106 | {
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107 | LogFlowThisFunc(("cbAllocated=%zu, cbAnnounced=%zu, pvDataAdd=%p, cbDataAdd=%zu\n",
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108 | cbAllocated, cbAnnounced, pvDataAdd, cbDataAdd));
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109 | if (!cbDataAdd)
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110 | return 0;
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111 | AssertPtrReturn(pvDataAdd, 0);
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112 |
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113 | const size_t cbAllocatedTmp = cbData + cbDataAdd;
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114 | if (cbAllocatedTmp > cbAllocated)
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115 | {
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116 | int rc = resize(cbAllocatedTmp);
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117 | if (RT_FAILURE(rc))
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118 | return 0;
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119 | }
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120 |
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121 | Assert(cbAllocated >= cbData + cbDataAdd);
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122 | memcpy((uint8_t *)pvData + cbData, pvDataAdd, cbDataAdd);
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123 |
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124 | cbData += cbDataAdd;
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125 | cbAnnounced = cbData;
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126 |
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127 | return cbData;
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128 | }
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129 |
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130 | /**
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131 | * Adds new meta data.
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132 | *
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133 | * @returns New (total) meta data size in bytes.
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134 | * @param vecAdd Meta data to add.
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135 | */
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136 | size_t add(const std::vector<BYTE> &vecAdd)
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137 | {
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138 | if (!vecAdd.size())
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139 | return 0;
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140 |
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141 | if (vecAdd.size() > UINT32_MAX) /* Paranoia. */
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142 | return 0;
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143 |
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144 | return add(&vecAdd.front(), (uint32_t)vecAdd.size());
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145 | }
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146 |
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147 | /**
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148 | * Resets (clears) all data.
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149 | */
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150 | void reset(void)
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151 | {
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152 | strFmt = "";
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153 |
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154 | if (pvData)
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155 | {
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156 | Assert(cbAllocated);
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157 | RTMemFree(pvData);
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158 | pvData = NULL;
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159 | }
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160 |
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161 | cbData = 0;
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162 | cbAllocated = 0;
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163 | cbAnnounced = 0;
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164 | }
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165 |
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166 | /**
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167 | * Resizes the allocation size.
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168 | *
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169 | * @returns VBox status code.
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170 | * @param cbSize New allocation size (in bytes).
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171 | */
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172 | int resize(size_t cbSize)
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173 | {
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174 | if (!cbSize)
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175 | {
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176 | reset();
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177 | return VINF_SUCCESS;
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178 | }
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179 |
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180 | if (cbSize == cbAllocated)
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181 | return VINF_SUCCESS;
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182 |
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183 | cbSize = RT_ALIGN_Z(cbSize, PAGE_SIZE);
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184 |
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185 | if (cbSize > _32M) /* Meta data can be up to 32MB. */
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186 | return VERR_BUFFER_OVERFLOW;
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187 |
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188 | void *pvTmp = NULL;
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189 | if (!cbAllocated)
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190 | {
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191 | Assert(cbData == 0);
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192 | pvTmp = RTMemAllocZ(cbSize);
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193 | }
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194 | else
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195 | {
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196 | AssertPtr(pvData);
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197 | pvTmp = RTMemRealloc(pvData, cbSize);
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198 | }
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199 |
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200 | if (pvTmp)
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201 | {
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202 | pvData = pvTmp;
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203 | cbAllocated = cbSize;
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204 | return VINF_SUCCESS;
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205 | }
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206 |
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207 | return VERR_NO_MEMORY;
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208 | }
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209 |
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210 | /** Format string of this meta data. */
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211 | com::Utf8Str strFmt;
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212 | /** Pointer to allocated meta data. */
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213 | void *pvData;
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214 | /** Used bytes of meta data. Must not exceed cbAllocated. */
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215 | size_t cbData;
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216 | /** Size (in bytes) of allocated meta data. */
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217 | size_t cbAllocated;
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218 | /** Size (in bytes) of announced meta data. */
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219 | size_t cbAnnounced;
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220 | };
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221 |
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222 | /**
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223 | * Struct for accounting shared DnD data to be sent/received.
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224 | */
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225 | struct GuestDnDData
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226 | {
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227 | GuestDnDData(void)
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228 | : cbExtra(0)
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229 | , cbProcessed(0) { }
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230 |
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231 | virtual ~GuestDnDData(void)
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232 | {
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233 | reset();
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234 | }
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235 |
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236 | /**
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237 | * Adds processed data to the internal accounting.
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238 | *
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239 | * @returns New processed data size.
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240 | * @param cbDataAdd Bytes to add as done processing.
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241 | */
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242 | size_t addProcessed(size_t cbDataAdd)
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243 | {
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244 | const size_t cbTotal = getTotalAnnounced(); RT_NOREF(cbTotal);
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245 | AssertReturn(cbProcessed + cbDataAdd <= cbTotal, 0);
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246 | cbProcessed += cbDataAdd;
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247 | return cbProcessed;
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248 | }
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249 |
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250 | /**
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251 | * Returns whether all data has been processed or not.
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252 | *
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253 | * @returns \c true if all data has been processed, \c false if not.
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254 | */
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255 | bool isComplete(void) const
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256 | {
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257 | const size_t cbTotal = getTotalAnnounced();
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258 | LogFlowFunc(("cbProcessed=%zu, cbTotal=%zu\n", cbProcessed, cbTotal));
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259 | AssertReturn(cbProcessed <= cbTotal, true);
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260 | return (cbProcessed == cbTotal);
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261 | }
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262 |
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263 | /**
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264 | * Returns the percentage (0-100) of the already processed data.
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265 | *
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266 | * @returns Percentage (0-100) of the already processed data.
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267 | */
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268 | uint8_t getPercentComplete(void) const
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269 | {
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270 | const size_t cbTotal = getTotalAnnounced();
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271 | return (uint8_t)(cbProcessed * 100 / RT_MAX(cbTotal, 1));
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272 | }
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273 |
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274 | /**
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275 | * Returns the remaining (outstanding) data left for processing.
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276 | *
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277 | * @returns Remaining (outstanding) data (in bytes) left for processing.
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278 | */
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279 | size_t getRemaining(void) const
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280 | {
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281 | const size_t cbTotal = getTotalAnnounced();
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282 | AssertReturn(cbProcessed <= cbTotal, 0);
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283 | return cbTotal - cbProcessed;
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284 | }
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285 |
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286 | /**
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287 | * Returns the total data size (in bytes) announced.
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288 | *
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289 | * @returns Total data size (in bytes) announced.
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290 | */
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291 | size_t getTotalAnnounced(void) const
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292 | {
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293 | return Meta.cbAnnounced + cbExtra;
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294 | }
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295 |
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296 | /**
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297 | * Returns the total data size (in bytes) available.
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298 | * For receiving data, this represents the already received data.
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299 | * For sending data, this represents the data left to send.
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300 | *
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301 | * @returns Total data size (in bytes) available.
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302 | */
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303 | size_t getTotalAvailable(void) const
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304 | {
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305 | return Meta.cbData + cbExtra;
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306 | }
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307 |
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308 | /**
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309 | * Resets all data.
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310 | */
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311 | void reset(void)
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312 | {
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313 | Meta.reset();
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314 |
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315 | cbExtra = 0;
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316 | cbProcessed = 0;
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317 | }
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318 |
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319 | /** For storing the actual meta data.
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320 | * This might be an URI list or just plain raw data,
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321 | * according to the format being sent. */
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322 | GuestDnDMetaData Meta;
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323 | /** Extra data to send/receive (in bytes). Can be 0 for raw data.
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324 | * For (file) transfers this is the total size for all files. */
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325 | size_t cbExtra;
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326 | /** Overall size (in bytes) of processed data. */
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327 | size_t cbProcessed;
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328 | };
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329 |
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330 | /** Initial object context state / no state set. */
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331 | #define DND_OBJ_STATE_NONE 0
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332 | /** The header was received / sent. */
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333 | #define DND_OBJ_STATE_HAS_HDR RT_BIT(0)
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334 | /** Validation mask for object context state. */
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335 | #define DND_OBJ_STATE_VALID_MASK UINT32_C(0x00000001)
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336 |
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337 | /**
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338 | * Base class for keeping around DnD (file) transfer data.
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339 | * Used for sending / receiving transfer data.
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340 | */
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341 | struct GuestDnDTransferData
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342 | {
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343 |
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344 | public:
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345 |
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346 | GuestDnDTransferData(void)
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347 | : cObjToProcess(0)
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348 | , cObjProcessed(0)
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349 | , pvScratchBuf(NULL)
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350 | , cbScratchBuf(0) { }
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351 |
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352 | virtual ~GuestDnDTransferData(void)
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353 | {
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354 | destroy();
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355 | }
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356 |
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357 | /**
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358 | * Initializes a transfer data object.
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359 | *
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360 | * @param cbBuf Scratch buffer size (in bytes) to use.
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361 | * If not specified, DND_DEFAULT_CHUNK_SIZE will be used.
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362 | */
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363 | int init(size_t cbBuf = DND_DEFAULT_CHUNK_SIZE)
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364 | {
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365 | reset();
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366 |
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367 | pvScratchBuf = RTMemAlloc(cbBuf);
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368 | if (!pvScratchBuf)
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369 | return VERR_NO_MEMORY;
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370 |
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371 | cbScratchBuf = cbBuf;
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372 | return VINF_SUCCESS;
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373 | }
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374 |
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375 | /**
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376 | * Destroys a transfer data object.
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377 | */
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378 | void destroy(void)
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379 | {
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380 | reset();
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381 |
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382 | if (pvScratchBuf)
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383 | {
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384 | Assert(cbScratchBuf);
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385 | RTMemFree(pvScratchBuf);
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386 | pvScratchBuf = NULL;
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387 | }
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388 | cbScratchBuf = 0;
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389 | }
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390 |
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391 | /**
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392 | * Resets a transfer data object.
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393 | */
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394 | void reset(void)
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395 | {
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396 | LogFlowFuncEnter();
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397 |
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398 | cObjToProcess = 0;
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399 | cObjProcessed = 0;
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400 | }
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401 |
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402 | /**
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403 | * Returns whether this transfer object is complete or not.
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404 | *
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405 | * @returns \c true if complete, \c false if not.
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406 | */
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407 | bool isComplete(void) const
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408 | {
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409 | return (cObjProcessed == cObjToProcess);
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410 | }
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411 |
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412 | /** Number of objects to process. */
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413 | uint64_t cObjToProcess;
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414 | /** Number of objects already processed. */
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415 | uint64_t cObjProcessed;
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416 | /** Pointer to an optional scratch buffer to use for
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417 | * doing the actual chunk transfers. */
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418 | void *pvScratchBuf;
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419 | /** Size (in bytes) of scratch buffer. */
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420 | size_t cbScratchBuf;
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421 | };
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422 |
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423 | /**
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424 | * Class for keeping around DnD transfer send data (Host -> Guest).
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425 | */
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426 | struct GuestDnDTransferSendData : public GuestDnDTransferData
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427 | {
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428 | GuestDnDTransferSendData()
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429 | : fObjState(0)
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430 | {
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431 | RT_ZERO(List);
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432 | int rc2 = DnDTransferListInit(&List);
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433 | AssertRC(rc2);
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434 | }
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435 |
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436 | virtual ~GuestDnDTransferSendData()
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437 | {
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438 | destroy();
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439 | }
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440 |
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441 | /**
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442 | * Destroys the object.
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443 | */
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444 | void destroy(void)
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445 | {
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446 | DnDTransferListDestroy(&List);
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447 | }
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448 |
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449 | /**
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450 | * Resets the object.
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451 | */
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452 | void reset(void)
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453 | {
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454 | DnDTransferListReset(&List);
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455 | fObjState = 0;
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456 |
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457 | GuestDnDTransferData::reset();
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458 | }
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459 |
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460 | /** Transfer List to handle. */
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461 | DNDTRANSFERLIST List;
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462 | /** Current state of object in transfer.
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463 | * This is needed for keeping compatibility to old(er) DnD HGCM protocols.
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464 | *
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465 | * At the moment we only support transferring one object at a time. */
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466 | uint32_t fObjState;
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467 | };
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468 |
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469 | /**
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470 | * Context structure for sending data to the guest.
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471 | */
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472 | struct GuestDnDSendCtx : public GuestDnDData
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473 | {
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474 | GuestDnDSendCtx(void);
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475 |
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476 | /**
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477 | * Resets the object.
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478 | */
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479 | void reset(void);
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480 |
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481 | /** Pointer to guest target class this context belongs to. */
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482 | GuestDnDTarget *pTarget;
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483 | /** Pointer to guest state this context belongs to. */
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484 | GuestDnDState *pState;
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485 | /** Target (VM) screen ID. */
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486 | uint32_t uScreenID;
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487 | /** Transfer data structure. */
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488 | GuestDnDTransferSendData Transfer;
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489 | /** Callback event to use. */
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490 | GuestDnDCallbackEvent EventCallback;
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491 | };
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492 |
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493 | struct GuestDnDTransferRecvData : public GuestDnDTransferData
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494 | {
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495 | GuestDnDTransferRecvData()
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496 | {
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497 | RT_ZERO(DroppedFiles);
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498 | int rc2 = DnDDroppedFilesInit(&DroppedFiles);
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499 | AssertRC(rc2);
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500 |
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501 | RT_ZERO(List);
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502 | rc2 = DnDTransferListInit(&List);
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503 | AssertRC(rc2);
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504 |
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505 | RT_ZERO(ObjCur);
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506 | rc2 = DnDTransferObjectInit(&ObjCur);
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507 | AssertRC(rc2);
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508 | }
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509 |
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510 | virtual ~GuestDnDTransferRecvData()
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511 | {
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512 | destroy();
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513 | }
|
---|
514 |
|
---|
515 | /**
|
---|
516 | * Destroys the object.
|
---|
517 | */
|
---|
518 | void destroy(void)
|
---|
519 | {
|
---|
520 | DnDTransferListDestroy(&List);
|
---|
521 | }
|
---|
522 |
|
---|
523 | /**
|
---|
524 | * Resets the object.
|
---|
525 | */
|
---|
526 | void reset(void)
|
---|
527 | {
|
---|
528 | DnDDroppedFilesClose(&DroppedFiles);
|
---|
529 | DnDTransferListReset(&List);
|
---|
530 | DnDTransferObjectReset(&ObjCur);
|
---|
531 |
|
---|
532 | GuestDnDTransferData::reset();
|
---|
533 | }
|
---|
534 |
|
---|
535 | /** The "VirtualBox Dropped Files" directory on the host we're going
|
---|
536 | * to utilize for transferring files from guest to the host. */
|
---|
537 | DNDDROPPEDFILES DroppedFiles;
|
---|
538 | /** Transfer List to handle.
|
---|
539 | * Currently we only support one transfer list at a time. */
|
---|
540 | DNDTRANSFERLIST List;
|
---|
541 | /** Current transfer object being handled.
|
---|
542 | * Currently we only support one transfer object at a time. */
|
---|
543 | DNDTRANSFEROBJECT ObjCur;
|
---|
544 | };
|
---|
545 |
|
---|
546 | /**
|
---|
547 | * Context structure for receiving data from the guest.
|
---|
548 | */
|
---|
549 | struct GuestDnDRecvCtx : public GuestDnDData
|
---|
550 | {
|
---|
551 | GuestDnDRecvCtx(void);
|
---|
552 |
|
---|
553 | /**
|
---|
554 | * Resets the object.
|
---|
555 | */
|
---|
556 | void reset(void);
|
---|
557 |
|
---|
558 | /** Pointer to guest source class this context belongs to. */
|
---|
559 | GuestDnDSource *pSource;
|
---|
560 | /** Pointer to guest state this context belongs to. */
|
---|
561 | GuestDnDState *pState;
|
---|
562 | /** Formats offered by the guest (and supported by the host). */
|
---|
563 | GuestDnDMIMEList lstFmtOffered;
|
---|
564 | /** Original drop format requested to receive from the guest. */
|
---|
565 | com::Utf8Str strFmtReq;
|
---|
566 | /** Intermediate drop format to be received from the guest.
|
---|
567 | * Some original drop formats require a different intermediate
|
---|
568 | * drop format:
|
---|
569 | *
|
---|
570 | * Receiving a file link as "text/plain" requires still to
|
---|
571 | * receive the file from the guest as "text/uri-list" first,
|
---|
572 | * then pointing to the file path on the host with the data
|
---|
573 | * in "text/plain" format returned. */
|
---|
574 | com::Utf8Str strFmtRecv;
|
---|
575 | /** Desired drop action to perform on the host.
|
---|
576 | * Needed to tell the guest if data has to be
|
---|
577 | * deleted e.g. when moving instead of copying. */
|
---|
578 | VBOXDNDACTION enmAction;
|
---|
579 | /** Transfer data structure. */
|
---|
580 | GuestDnDTransferRecvData Transfer;
|
---|
581 | /** Callback event to use. */
|
---|
582 | GuestDnDCallbackEvent EventCallback;
|
---|
583 | };
|
---|
584 |
|
---|
585 | /**
|
---|
586 | * Class for maintainig a (buffered) guest DnD message.
|
---|
587 | */
|
---|
588 | class GuestDnDMsg
|
---|
589 | {
|
---|
590 | public:
|
---|
591 |
|
---|
592 | GuestDnDMsg(void)
|
---|
593 | : uMsg(0)
|
---|
594 | , cParms(0)
|
---|
595 | , cParmsAlloc(0)
|
---|
596 | , paParms(NULL) { }
|
---|
597 |
|
---|
598 | virtual ~GuestDnDMsg(void)
|
---|
599 | {
|
---|
600 | reset();
|
---|
601 | }
|
---|
602 |
|
---|
603 | public:
|
---|
604 |
|
---|
605 | /**
|
---|
606 | * Appends a new HGCM parameter to the message and returns the pointer to it.
|
---|
607 | */
|
---|
608 | PVBOXHGCMSVCPARM getNextParam(void)
|
---|
609 | {
|
---|
610 | if (cParms >= cParmsAlloc)
|
---|
611 | {
|
---|
612 | if (!paParms)
|
---|
613 | paParms = (PVBOXHGCMSVCPARM)RTMemAlloc(4 * sizeof(VBOXHGCMSVCPARM));
|
---|
614 | else
|
---|
615 | paParms = (PVBOXHGCMSVCPARM)RTMemRealloc(paParms, (cParmsAlloc + 4) * sizeof(VBOXHGCMSVCPARM));
|
---|
616 | if (!paParms)
|
---|
617 | throw VERR_NO_MEMORY;
|
---|
618 | RT_BZERO(&paParms[cParmsAlloc], 4 * sizeof(VBOXHGCMSVCPARM));
|
---|
619 | cParmsAlloc += 4;
|
---|
620 | }
|
---|
621 |
|
---|
622 | return &paParms[cParms++];
|
---|
623 | }
|
---|
624 |
|
---|
625 | /**
|
---|
626 | * Returns the current parameter count.
|
---|
627 | *
|
---|
628 | * @returns Current parameter count.
|
---|
629 | */
|
---|
630 | uint32_t getCount(void) const { return cParms; }
|
---|
631 |
|
---|
632 | /**
|
---|
633 | * Returns the pointer to the beginning of the HGCM parameters array. Use with care.
|
---|
634 | *
|
---|
635 | * @returns Pointer to the beginning of the HGCM parameters array.
|
---|
636 | */
|
---|
637 | PVBOXHGCMSVCPARM getParms(void) const { return paParms; }
|
---|
638 |
|
---|
639 | /**
|
---|
640 | * Returns the message type.
|
---|
641 | *
|
---|
642 | * @returns Message type.
|
---|
643 | */
|
---|
644 | uint32_t getType(void) const { return uMsg; }
|
---|
645 |
|
---|
646 | /**
|
---|
647 | * Resets the object.
|
---|
648 | */
|
---|
649 | void reset(void)
|
---|
650 | {
|
---|
651 | if (paParms)
|
---|
652 | {
|
---|
653 | /* Remove deep copies. */
|
---|
654 | for (uint32_t i = 0; i < cParms; i++)
|
---|
655 | {
|
---|
656 | if ( paParms[i].type == VBOX_HGCM_SVC_PARM_PTR
|
---|
657 | && paParms[i].u.pointer.size)
|
---|
658 | {
|
---|
659 | AssertPtr(paParms[i].u.pointer.addr);
|
---|
660 | RTMemFree(paParms[i].u.pointer.addr);
|
---|
661 | }
|
---|
662 | }
|
---|
663 |
|
---|
664 | RTMemFree(paParms);
|
---|
665 | paParms = NULL;
|
---|
666 | }
|
---|
667 |
|
---|
668 | uMsg = cParms = cParmsAlloc = 0;
|
---|
669 | }
|
---|
670 |
|
---|
671 | /**
|
---|
672 | * Appends a new message parameter of type pointer.
|
---|
673 | *
|
---|
674 | * @returns VBox status code.
|
---|
675 | * @param pvBuf Pointer to data to use.
|
---|
676 | * @param cbBuf Size (in bytes) of data to use.
|
---|
677 | */
|
---|
678 | int appendPointer(void *pvBuf, uint32_t cbBuf)
|
---|
679 | {
|
---|
680 | PVBOXHGCMSVCPARM pParm = getNextParam();
|
---|
681 | if (!pParm)
|
---|
682 | return VERR_NO_MEMORY;
|
---|
683 |
|
---|
684 | void *pvTmp = NULL;
|
---|
685 | if (cbBuf)
|
---|
686 | {
|
---|
687 | AssertPtr(pvBuf);
|
---|
688 | pvTmp = RTMemDup(pvBuf, cbBuf);
|
---|
689 | if (!pvTmp)
|
---|
690 | return VERR_NO_MEMORY;
|
---|
691 | }
|
---|
692 |
|
---|
693 | HGCMSvcSetPv(pParm, pvTmp, cbBuf);
|
---|
694 | return VINF_SUCCESS;
|
---|
695 | }
|
---|
696 |
|
---|
697 | /**
|
---|
698 | * Appends a new message parameter of type string.
|
---|
699 | *
|
---|
700 | * @returns VBox status code.
|
---|
701 | * @param pszString Pointer to string data to use.
|
---|
702 | */
|
---|
703 | int appendString(const char *pszString)
|
---|
704 | {
|
---|
705 | PVBOXHGCMSVCPARM pParm = getNextParam();
|
---|
706 | if (!pParm)
|
---|
707 | return VERR_NO_MEMORY;
|
---|
708 |
|
---|
709 | char *pszTemp = RTStrDup(pszString);
|
---|
710 | if (!pszTemp)
|
---|
711 | return VERR_NO_MEMORY;
|
---|
712 |
|
---|
713 | HGCMSvcSetStr(pParm, pszTemp);
|
---|
714 | return VINF_SUCCESS;
|
---|
715 | }
|
---|
716 |
|
---|
717 | /**
|
---|
718 | * Appends a new message parameter of type uint32_t.
|
---|
719 | *
|
---|
720 | * @returns VBox status code.
|
---|
721 | * @param u32Val uint32_t value to use.
|
---|
722 | */
|
---|
723 | int appendUInt32(uint32_t u32Val)
|
---|
724 | {
|
---|
725 | PVBOXHGCMSVCPARM pParm = getNextParam();
|
---|
726 | if (!pParm)
|
---|
727 | return VERR_NO_MEMORY;
|
---|
728 |
|
---|
729 | HGCMSvcSetU32(pParm, u32Val);
|
---|
730 | return VINF_SUCCESS;
|
---|
731 | }
|
---|
732 |
|
---|
733 | /**
|
---|
734 | * Appends a new message parameter of type uint64_t.
|
---|
735 | *
|
---|
736 | * @returns VBox status code.
|
---|
737 | * @param u64Val uint64_t value to use.
|
---|
738 | */
|
---|
739 | int appendUInt64(uint64_t u64Val)
|
---|
740 | {
|
---|
741 | PVBOXHGCMSVCPARM pParm = getNextParam();
|
---|
742 | if (!pParm)
|
---|
743 | return VERR_NO_MEMORY;
|
---|
744 |
|
---|
745 | HGCMSvcSetU64(pParm, u64Val);
|
---|
746 | return VINF_SUCCESS;
|
---|
747 | }
|
---|
748 |
|
---|
749 | /**
|
---|
750 | * Sets the HGCM message type (function number).
|
---|
751 | *
|
---|
752 | * @param uMsgType Message type to set.
|
---|
753 | */
|
---|
754 | void setType(uint32_t uMsgType) { uMsg = uMsgType; }
|
---|
755 |
|
---|
756 | protected:
|
---|
757 |
|
---|
758 | /** Message type. */
|
---|
759 | uint32_t uMsg;
|
---|
760 | /** Message parameters. */
|
---|
761 | uint32_t cParms;
|
---|
762 | /** Size of array. */
|
---|
763 | uint32_t cParmsAlloc;
|
---|
764 | /** Array of HGCM parameters */
|
---|
765 | PVBOXHGCMSVCPARM paParms;
|
---|
766 | };
|
---|
767 |
|
---|
768 | /** Guest DnD callback function definition. */
|
---|
769 | typedef DECLCALLBACKPTR(int, PFNGUESTDNDCALLBACK,(uint32_t uMsg, void *pvParms, size_t cbParms, void *pvUser));
|
---|
770 |
|
---|
771 | /**
|
---|
772 | * Structure for keeping a guest DnD callback.
|
---|
773 | * Each callback can handle one HGCM message, however, multiple HGCM messages can be registered
|
---|
774 | * to the same callback (function).
|
---|
775 | */
|
---|
776 | typedef struct GuestDnDCallback
|
---|
777 | {
|
---|
778 | GuestDnDCallback(void)
|
---|
779 | : uMessgage(0)
|
---|
780 | , pfnCallback(NULL)
|
---|
781 | , pvUser(NULL) { }
|
---|
782 |
|
---|
783 | GuestDnDCallback(PFNGUESTDNDCALLBACK pvCB, uint32_t uMsg, void *pvUsr = NULL)
|
---|
784 | : uMessgage(uMsg)
|
---|
785 | , pfnCallback(pvCB)
|
---|
786 | , pvUser(pvUsr) { }
|
---|
787 |
|
---|
788 | /** The HGCM message ID to handle. */
|
---|
789 | uint32_t uMessgage;
|
---|
790 | /** Pointer to callback function. */
|
---|
791 | PFNGUESTDNDCALLBACK pfnCallback;
|
---|
792 | /** Pointer to user-supplied data. */
|
---|
793 | void *pvUser;
|
---|
794 | } GuestDnDCallback;
|
---|
795 |
|
---|
796 | /** Contains registered callback pointers for specific HGCM message types. */
|
---|
797 | typedef std::map<uint32_t, GuestDnDCallback> GuestDnDCallbackMap;
|
---|
798 |
|
---|
799 | /**
|
---|
800 | * Class for keeping a DnD guest state around.
|
---|
801 | */
|
---|
802 | class GuestDnDState
|
---|
803 | {
|
---|
804 |
|
---|
805 | public:
|
---|
806 | DECLARE_TRANSLATE_METHODS(GuestDnDState)
|
---|
807 |
|
---|
808 | GuestDnDState(const ComObjPtr<Guest>& pGuest);
|
---|
809 | virtual ~GuestDnDState(void);
|
---|
810 |
|
---|
811 | public:
|
---|
812 |
|
---|
813 | int notifyAboutGuestResponse(void) const;
|
---|
814 | int waitForGuestResponse(RTMSINTERVAL msTimeout = 500) const;
|
---|
815 |
|
---|
816 | void setActionsAllowed(VBOXDNDACTIONLIST a) { m_dndLstActionsAllowed = a; }
|
---|
817 | VBOXDNDACTIONLIST getActionsAllowed(void) const { return m_dndLstActionsAllowed; }
|
---|
818 |
|
---|
819 | void setActionDefault(VBOXDNDACTION a) { m_dndActionDefault = a; }
|
---|
820 | VBOXDNDACTION getActionDefault(void) const { return m_dndActionDefault; }
|
---|
821 |
|
---|
822 | void setFormats(const GuestDnDMIMEList &lstFormats) { m_lstFormats = lstFormats; }
|
---|
823 | GuestDnDMIMEList formats(void) const { return m_lstFormats; }
|
---|
824 |
|
---|
825 | void reset(void);
|
---|
826 |
|
---|
827 | bool isProgressCanceled(void) const;
|
---|
828 | int setCallback(uint32_t uMsg, PFNGUESTDNDCALLBACK pfnCallback, void *pvUser = NULL);
|
---|
829 | int setProgress(unsigned uPercentage, uint32_t uState, int rcOp = VINF_SUCCESS, const Utf8Str &strMsg = "");
|
---|
830 | HRESULT resetProgress(const ComObjPtr<Guest>& pParent);
|
---|
831 | HRESULT queryProgressTo(IProgress **ppProgress);
|
---|
832 |
|
---|
833 | public:
|
---|
834 |
|
---|
835 | /** @name HGCM callback handling.
|
---|
836 | @{ */
|
---|
837 | int onDispatch(uint32_t u32Function, void *pvParms, uint32_t cbParms);
|
---|
838 | /** @} */
|
---|
839 |
|
---|
840 | public:
|
---|
841 |
|
---|
842 | /** Pointer to context this class is tied to. */
|
---|
843 | void *m_pvCtx;
|
---|
844 | /** The DnD protocol version to use, depending on the
|
---|
845 | * installed Guest Additions. See DragAndDropSvc.h for
|
---|
846 | * a protocol changelog. */
|
---|
847 | uint32_t m_uProtocolVersion;
|
---|
848 | /** The guest feature flags reported to the host (VBOX_DND_GF_XXX). */
|
---|
849 | uint64_t m_fGuestFeatures0;
|
---|
850 | /** Event for waiting for response. */
|
---|
851 | RTSEMEVENT m_EventSem;
|
---|
852 | /** Default action to perform in case of a
|
---|
853 | * successful drop. */
|
---|
854 | VBOXDNDACTION m_dndActionDefault;
|
---|
855 | /** Actions supported by the guest in case of a successful drop. */
|
---|
856 | VBOXDNDACTIONLIST m_dndLstActionsAllowed;
|
---|
857 | /** Format(s) requested/supported from the guest. */
|
---|
858 | GuestDnDMIMEList m_lstFormats;
|
---|
859 | /** Pointer to IGuest parent object. */
|
---|
860 | ComObjPtr<Guest> m_pParent;
|
---|
861 | /** Pointer to associated progress object. Optional. */
|
---|
862 | ComObjPtr<Progress> m_pProgress;
|
---|
863 | /** Callback map. */
|
---|
864 | GuestDnDCallbackMap m_mapCallbacks;
|
---|
865 | };
|
---|
866 |
|
---|
867 | /**
|
---|
868 | * Private singleton class for the guest's DnD implementation.
|
---|
869 | *
|
---|
870 | * Can't be instanciated directly, only via the factory pattern.
|
---|
871 | * Keeps track of all ongoing DnD transfers.
|
---|
872 | */
|
---|
873 | class GuestDnD
|
---|
874 | {
|
---|
875 | public:
|
---|
876 |
|
---|
877 | /**
|
---|
878 | * Creates the Singleton GuestDnD object.
|
---|
879 | *
|
---|
880 | * @returns Newly created Singleton object, or NULL on failure.
|
---|
881 | */
|
---|
882 | static GuestDnD *createInstance(const ComObjPtr<Guest>& pGuest)
|
---|
883 | {
|
---|
884 | Assert(NULL == GuestDnD::s_pInstance);
|
---|
885 | GuestDnD::s_pInstance = new GuestDnD(pGuest);
|
---|
886 | return GuestDnD::s_pInstance;
|
---|
887 | }
|
---|
888 |
|
---|
889 | /**
|
---|
890 | * Destroys the Singleton GuestDnD object.
|
---|
891 | */
|
---|
892 | static void destroyInstance(void)
|
---|
893 | {
|
---|
894 | if (GuestDnD::s_pInstance)
|
---|
895 | {
|
---|
896 | delete GuestDnD::s_pInstance;
|
---|
897 | GuestDnD::s_pInstance = NULL;
|
---|
898 | }
|
---|
899 | }
|
---|
900 |
|
---|
901 | /**
|
---|
902 | * Returns the Singleton GuestDnD object.
|
---|
903 | *
|
---|
904 | * @returns Pointer to Singleton GuestDnD object, or NULL if not created yet.
|
---|
905 | */
|
---|
906 | static inline GuestDnD *getInstance(void)
|
---|
907 | {
|
---|
908 | AssertPtr(GuestDnD::s_pInstance);
|
---|
909 | return GuestDnD::s_pInstance;
|
---|
910 | }
|
---|
911 |
|
---|
912 | protected:
|
---|
913 |
|
---|
914 | /** List of registered DnD sources. */
|
---|
915 | typedef std::list< ComObjPtr<GuestDnDSource> > GuestDnDSrcList;
|
---|
916 | /** List of registered DnD targets. */
|
---|
917 | typedef std::list< ComObjPtr<GuestDnDTarget> > GuestDnDTgtList;
|
---|
918 |
|
---|
919 | /** Constructor; will throw rc on failure. */
|
---|
920 | GuestDnD(const ComObjPtr<Guest>& pGuest);
|
---|
921 | virtual ~GuestDnD(void);
|
---|
922 |
|
---|
923 | public:
|
---|
924 |
|
---|
925 | /** @name Public helper functions.
|
---|
926 | * @{ */
|
---|
927 | HRESULT adjustScreenCoordinates(ULONG uScreenId, ULONG *puX, ULONG *puY) const;
|
---|
928 | GuestDnDState *getState(uint32_t = 0) const;
|
---|
929 | int hostCall(uint32_t u32Function, uint32_t cParms, PVBOXHGCMSVCPARM paParms) const;
|
---|
930 | GuestDnDMIMEList defaultFormats(void) const { return m_strDefaultFormats; }
|
---|
931 | /** @} */
|
---|
932 |
|
---|
933 | /** @name Source / target management.
|
---|
934 | * @{ */
|
---|
935 | int registerSource(const ComObjPtr<GuestDnDSource> &Source);
|
---|
936 | int unregisterSource(const ComObjPtr<GuestDnDSource> &Source);
|
---|
937 | size_t getSourceCount(void);
|
---|
938 |
|
---|
939 | int registerTarget(const ComObjPtr<GuestDnDTarget> &Target);
|
---|
940 | int unregisterTarget(const ComObjPtr<GuestDnDTarget> &Target);
|
---|
941 | size_t getTargetCount(void);
|
---|
942 | /** @} */
|
---|
943 |
|
---|
944 | public:
|
---|
945 |
|
---|
946 | /** @name Static low-level HGCM callback handler.
|
---|
947 | * @{ */
|
---|
948 | static DECLCALLBACK(int) notifyDnDDispatcher(void *pvExtension, uint32_t u32Function, void *pvParms, uint32_t cbParms);
|
---|
949 | /** @} */
|
---|
950 |
|
---|
951 | /** @name Static helper methods.
|
---|
952 | * @{ */
|
---|
953 | static bool isFormatInFormatList(const com::Utf8Str &strFormat, const GuestDnDMIMEList &lstFormats);
|
---|
954 | static GuestDnDMIMEList toFormatList(const com::Utf8Str &strFormats, const com::Utf8Str &strSep = DND_FORMATS_SEPARATOR_STR);
|
---|
955 | static com::Utf8Str toFormatString(const GuestDnDMIMEList &lstFormats);
|
---|
956 | static GuestDnDMIMEList toFilteredFormatList(const GuestDnDMIMEList &lstFormatsSupported, const GuestDnDMIMEList &lstFormatsWanted);
|
---|
957 | static GuestDnDMIMEList toFilteredFormatList(const GuestDnDMIMEList &lstFormatsSupported, const com::Utf8Str &strFormatsWanted);
|
---|
958 | static DnDAction_T toMainAction(VBOXDNDACTION dndAction);
|
---|
959 | static std::vector<DnDAction_T> toMainActions(VBOXDNDACTIONLIST dndActionList);
|
---|
960 | static VBOXDNDACTION toHGCMAction(DnDAction_T enmAction);
|
---|
961 | static void toHGCMActions(DnDAction_T enmDefAction, VBOXDNDACTION *pDefAction, const std::vector<DnDAction_T> vecAllowedActions, VBOXDNDACTIONLIST *pLstAllowedActions);
|
---|
962 | /** @} */
|
---|
963 |
|
---|
964 | protected:
|
---|
965 |
|
---|
966 | /** @name Singleton properties.
|
---|
967 | * @{ */
|
---|
968 | /** List of supported default MIME/Content-type formats. */
|
---|
969 | GuestDnDMIMEList m_strDefaultFormats;
|
---|
970 | /** Pointer to guest implementation. */
|
---|
971 | const ComObjPtr<Guest> m_pGuest;
|
---|
972 | /** The current state from the guest. At the
|
---|
973 | * moment we only support only state a time (ARQ-style). */
|
---|
974 | GuestDnDState *m_pState;
|
---|
975 | /** Critical section to serialize access. */
|
---|
976 | RTCRITSECT m_CritSect;
|
---|
977 | /** Number of active transfers (guest->host or host->guest). */
|
---|
978 | uint32_t m_cTransfersPending;
|
---|
979 | GuestDnDSrcList m_lstSrc;
|
---|
980 | GuestDnDTgtList m_lstTgt;
|
---|
981 | /** @} */
|
---|
982 |
|
---|
983 | private:
|
---|
984 |
|
---|
985 | /** Static pointer to singleton instance. */
|
---|
986 | static GuestDnD *s_pInstance;
|
---|
987 | };
|
---|
988 |
|
---|
989 | /** Access to the GuestDnD's singleton instance. */
|
---|
990 | #define GuestDnDInst() GuestDnD::getInstance()
|
---|
991 |
|
---|
992 | /** List of pointers to guest DnD Messages. */
|
---|
993 | typedef std::list<GuestDnDMsg *> GuestDnDMsgList;
|
---|
994 |
|
---|
995 | /**
|
---|
996 | * IDnDBase class implementation for sharing code between
|
---|
997 | * IGuestDnDSource and IGuestDnDTarget implementation.
|
---|
998 | */
|
---|
999 | class GuestDnDBase
|
---|
1000 | {
|
---|
1001 | protected:
|
---|
1002 |
|
---|
1003 | GuestDnDBase(void);
|
---|
1004 |
|
---|
1005 | protected:
|
---|
1006 |
|
---|
1007 | /** Shared (internal) IDnDBase method implementations.
|
---|
1008 | * @{ */
|
---|
1009 | bool i_isFormatSupported(const com::Utf8Str &aFormat) const;
|
---|
1010 | const GuestDnDMIMEList &i_getFormats(void) const;
|
---|
1011 | HRESULT i_addFormats(const GuestDnDMIMEList &aFormats);
|
---|
1012 | HRESULT i_removeFormats(const GuestDnDMIMEList &aFormats);
|
---|
1013 | /** @} */
|
---|
1014 |
|
---|
1015 | protected:
|
---|
1016 |
|
---|
1017 | /** @name Functions for handling a simple host HGCM message queue.
|
---|
1018 | * @{ */
|
---|
1019 | int msgQueueAdd(GuestDnDMsg *pMsg);
|
---|
1020 | GuestDnDMsg *msgQueueGetNext(void);
|
---|
1021 | void msgQueueRemoveNext(void);
|
---|
1022 | void msgQueueClear(void);
|
---|
1023 | /** @} */
|
---|
1024 |
|
---|
1025 | int sendCancel(void);
|
---|
1026 | int updateProgress(GuestDnDData *pData, GuestDnDState *pState, size_t cbDataAdd = 0);
|
---|
1027 | int waitForEvent(GuestDnDCallbackEvent *pEvent, GuestDnDState *pState, RTMSINTERVAL msTimeout);
|
---|
1028 |
|
---|
1029 | protected:
|
---|
1030 |
|
---|
1031 | /** @name Public attributes (through getters/setters).
|
---|
1032 | * @{ */
|
---|
1033 | /** Pointer to guest implementation. */
|
---|
1034 | const ComObjPtr<Guest> m_pGuest;
|
---|
1035 | /** List of supported MIME types by the source. */
|
---|
1036 | GuestDnDMIMEList m_lstFmtSupported;
|
---|
1037 | /** List of offered MIME types to the counterpart. */
|
---|
1038 | GuestDnDMIMEList m_lstFmtOffered;
|
---|
1039 | /** Whether the object still is in pending state. */
|
---|
1040 | bool m_fIsPending;
|
---|
1041 | /** Pointer to state bound to this object. */
|
---|
1042 | GuestDnDState *m_pState;
|
---|
1043 | /** @} */
|
---|
1044 |
|
---|
1045 | /**
|
---|
1046 | * Internal stuff.
|
---|
1047 | */
|
---|
1048 | struct
|
---|
1049 | {
|
---|
1050 | /** Outgoing message queue (FIFO). */
|
---|
1051 | GuestDnDMsgList lstMsgOut;
|
---|
1052 | } m_DataBase;
|
---|
1053 | };
|
---|
1054 | #endif /* !MAIN_INCLUDED_GuestDnDPrivate_h */
|
---|
1055 |
|
---|