1 | /* $Id: darwin-pasteboard.cpp 28800 2010-04-27 08:22:32Z vboxsync $ */
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2 | /** @file
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3 | * Shared Clipboard: Mac OS X host implementation.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2008 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | */
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17 |
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18 | #define LOG_GROUP LOG_GROUP_HGCM
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19 | #include <Carbon/Carbon.h>
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20 |
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21 | #include <iprt/mem.h>
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22 | #include <iprt/assert.h>
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23 | #include "iprt/err.h"
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24 |
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25 | #include "VBox/log.h"
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26 | #include "VBox/HostServices/VBoxClipboardSvc.h"
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27 | #include "VBox/GuestHost/clipboard-helper.h"
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28 |
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29 | /* For debugging */
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30 | //#define SHOW_CLIPBOARD_CONTENT
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31 |
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32 | /**
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33 | * Initialize the global pasteboard and return a reference to it.
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34 | *
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35 | * @param pPasteboardRef Reference to the global pasteboard.
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36 | *
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37 | * @returns IPRT status code.
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38 | */
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39 | int initPasteboard (PasteboardRef *pPasteboardRef)
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40 | {
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41 | int rc = VINF_SUCCESS;
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42 |
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43 | if (PasteboardCreate (kPasteboardClipboard, pPasteboardRef))
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44 | rc = VERR_NOT_SUPPORTED;
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45 |
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46 | return rc;
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47 | }
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48 |
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49 | /**
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50 | * Release the reference to the global pasteboard.
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51 | *
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52 | * @param pPasteboardRef Reference to the global pasteboard.
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53 | */
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54 | void destroyPasteboard (PasteboardRef *pPasteboardRef)
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55 | {
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56 | CFRelease (*pPasteboardRef);
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57 | *pPasteboardRef = NULL;
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58 | }
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59 |
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60 | /**
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61 | * Inspect the global pasteboard for new content. Check if there is some type
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62 | * that is supported by vbox and return it.
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63 | *
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64 | * @param pPasteboardRef Reference to the global pasteboard.
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65 | * @param pfFormats Pointer for the bit combination of the
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66 | * supported types.
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67 | * @param pbChanged True if something has changed after the
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68 | * last call.
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69 | *
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70 | * @returns IPRT status code. (Always VINF_SUCCESS atm.)
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71 | */
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72 | int queryNewPasteboardFormats (PasteboardRef pPasteboard, uint32_t *pfFormats, bool *pfChanged)
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73 | {
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74 | Log (("queryNewPasteboardFormats\n"));
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75 |
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76 | OSStatus err = noErr;
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77 | *pfChanged = true;
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78 |
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79 | PasteboardSyncFlags syncFlags;
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80 | /* Make sure all is in sync */
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81 | syncFlags = PasteboardSynchronize (pPasteboard);
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82 | /* If nothing changed return */
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83 | if (!(syncFlags & kPasteboardModified))
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84 | {
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85 | *pfChanged = false;
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86 | return VINF_SUCCESS;
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87 | }
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88 |
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89 | /* Are some items in the pasteboard? */
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90 | ItemCount itemCount;
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91 | err = PasteboardGetItemCount (pPasteboard, &itemCount);
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92 | if (itemCount < 1)
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93 | return VINF_SUCCESS;
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94 |
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95 | /* The id of the first element in the pasteboard */
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96 | int rc = VINF_SUCCESS;
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97 | PasteboardItemID itemID;
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98 | if (!(err = PasteboardGetItemIdentifier (pPasteboard, 1, &itemID)))
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99 | {
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100 | /* Retrieve all flavors in the pasteboard, maybe there
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101 | * is something we can use. */
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102 | CFArrayRef flavorTypeArray;
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103 | if (!(err = PasteboardCopyItemFlavors (pPasteboard, itemID, &flavorTypeArray)))
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104 | {
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105 | CFIndex flavorCount;
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106 | flavorCount = CFArrayGetCount (flavorTypeArray);
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107 | for (CFIndex flavorIndex = 0; flavorIndex < flavorCount; flavorIndex++)
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108 | {
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109 | CFStringRef flavorType;
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110 | flavorType = static_cast <CFStringRef> (CFArrayGetValueAtIndex (flavorTypeArray,
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111 | flavorIndex));
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112 | /* Currently only unicode supported */
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113 | if (UTTypeConformsTo (flavorType, CFSTR ("public.utf8-plain-text")) ||
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114 | UTTypeConformsTo (flavorType, CFSTR ("public.utf16-plain-text")))
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115 | {
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116 | Log (("Unicode flavor detected.\n"));
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117 | *pfFormats |= VBOX_SHARED_CLIPBOARD_FMT_UNICODETEXT;
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118 | }
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119 | }
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120 | CFRelease (flavorTypeArray);
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121 | }
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122 | }
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123 |
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124 | Log (("queryNewPasteboardFormats: rc = %02X\n", rc));
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125 | return rc;
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126 | }
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127 |
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128 | /**
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129 | * Read content from the host clipboard and write it to the internal clipboard
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130 | * structure for further processing.
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131 | *
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132 | * @param pPasteboardRef Reference to the global pasteboard.
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133 | * @param fFormats The format type which should be read.
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134 | * @param pv The destination buffer.
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135 | * @param cb The size of the destination buffer.
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136 | * @param pcbActual The size which is needed to transfer the content.
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137 | *
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138 | * @returns IPRT status code.
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139 | */
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140 | int readFromPasteboard (PasteboardRef pPasteboard, uint32_t fFormat, void *pv, uint32_t cb, uint32_t *pcbActual)
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141 | {
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142 | Log (("readFromPasteboard: fFormat = %02X\n", fFormat));
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143 |
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144 | OSStatus err = noErr;
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145 |
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146 | /* Make sure all is in sync */
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147 | PasteboardSynchronize (pPasteboard);
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148 |
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149 | /* Are some items in the pasteboard? */
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150 | ItemCount itemCount;
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151 | err = PasteboardGetItemCount (pPasteboard, &itemCount);
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152 | if (itemCount < 1)
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153 | return VINF_SUCCESS;
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154 |
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155 | /* The id of the first element in the pasteboard */
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156 | int rc = VERR_NOT_SUPPORTED;
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157 | PasteboardItemID itemID;
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158 | if (!(err = PasteboardGetItemIdentifier (pPasteboard, 1, &itemID)))
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159 | {
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160 | /* The guest request unicode */
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161 | if (fFormat & VBOX_SHARED_CLIPBOARD_FMT_UNICODETEXT)
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162 | {
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163 | CFDataRef outData;
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164 | PRTUTF16 pwszTmp = NULL;
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165 | /* Try utf-16 first */
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166 | if (!(err = PasteboardCopyItemFlavorData (pPasteboard, itemID, CFSTR ("public.utf16-plain-text"), &outData)))
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167 | {
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168 | Log (("Clipboard content is utf-16\n"));
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169 | rc = RTUtf16DupEx (&pwszTmp, (PRTUTF16)CFDataGetBytePtr (outData), 0);
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170 | }
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171 | /* Second try is utf-8 */
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172 | else
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173 | if (!(err = PasteboardCopyItemFlavorData (pPasteboard, itemID, CFSTR ("public.utf8-plain-text"), &outData)))
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174 | {
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175 | Log (("readFromPasteboard: clipboard content is utf-8\n"));
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176 | rc = RTStrToUtf16 ((const char*)CFDataGetBytePtr (outData), &pwszTmp);
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177 | }
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178 | if (pwszTmp)
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179 | {
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180 | /* Check how much longer will the converted text will be. */
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181 | size_t cwSrc = RTUtf16Len (pwszTmp);
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182 | size_t cwDest;
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183 | rc = vboxClipboardUtf16GetWinSize (pwszTmp, cwSrc, &cwDest);
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184 | if (RT_FAILURE (rc))
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185 | {
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186 | RTUtf16Free (pwszTmp);
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187 | Log (("readFromPasteboard: clipboard conversion failed. vboxClipboardUtf16GetWinSize returned %Rrc. Abandoning.\n", rc));
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188 | AssertRCReturn (rc, rc);
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189 | }
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190 | /* Set the actually needed data size */
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191 | *pcbActual = cwDest * 2;
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192 | /* Return success state */
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193 | rc = VINF_SUCCESS;
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194 | /* Do not copy data if the dst buffer is not big enough. */
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195 | if (*pcbActual <= cb)
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196 | {
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197 | rc = vboxClipboardUtf16LinToWin (pwszTmp, RTUtf16Len (pwszTmp), static_cast <PRTUTF16> (pv), cb / 2);
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198 | if (RT_FAILURE (rc))
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199 | {
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200 | RTUtf16Free (pwszTmp);
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201 | Log (("readFromPasteboard: clipboard conversion failed. vboxClipboardUtf16LinToWin() returned %Rrc. Abandoning.\n", rc));
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202 | AssertRCReturn (rc, rc);
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203 | }
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204 | #ifdef SHOW_CLIPBOARD_CONTENT
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205 | Log (("readFromPasteboard: clipboard content: %ls\n", static_cast <PRTUTF16> (pv)));
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206 | #endif
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207 | }
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208 | /* Free the temp string */
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209 | RTUtf16Free (pwszTmp);
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210 | }
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211 | }
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212 | }
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213 |
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214 | Log (("readFromPasteboard: rc = %02X\n", rc));
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215 | return rc;
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216 | }
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217 |
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218 | /**
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219 | * Write clipboard content to the host clipboard from the internal clipboard
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220 | * structure.
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221 | *
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222 | * @param pPasteboardRef Reference to the global pasteboard.
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223 | * @param pv The source buffer.
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224 | * @param cb The size of the source buffer.
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225 | * @param fFormats The format type which should be written.
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226 | *
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227 | * @returns IPRT status code.
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228 | */
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229 | int writeToPasteboard (PasteboardRef pPasteboard, void *pv, uint32_t cb, uint32_t fFormat)
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230 | {
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231 | Log (("writeToPasteboard: fFormat = %02X\n", fFormat));
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232 |
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233 | /* Clear the pasteboard */
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234 | if (PasteboardClear (pPasteboard))
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235 | return VERR_NOT_SUPPORTED;
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236 |
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237 | /* Make sure all is in sync */
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238 | PasteboardSynchronize (pPasteboard);
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239 |
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240 | int rc = VERR_NOT_SUPPORTED;
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241 | /* Handle the unicode text */
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242 | if (fFormat & VBOX_SHARED_CLIPBOARD_FMT_UNICODETEXT)
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243 | {
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244 | PRTUTF16 pwszSrcText = static_cast <PRTUTF16> (pv);
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245 | size_t cwSrc = cb / 2;
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246 | size_t cwDest = 0;
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247 | /* How long will the converted text be? */
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248 | rc = vboxClipboardUtf16GetLinSize (pwszSrcText, cwSrc, &cwDest);
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249 | if (RT_FAILURE (rc))
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250 | {
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251 | Log (("writeToPasteboard: clipboard conversion failed. vboxClipboardUtf16GetLinSize returned %Rrc. Abandoning.\n", rc));
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252 | AssertRCReturn (rc, rc);
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253 | }
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254 | /* Empty clipboard? Not critical */
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255 | if (cwDest == 0)
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256 | {
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257 | Log (("writeToPasteboard: received empty clipboard data from the guest, returning false.\n"));
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258 | return VINF_SUCCESS;
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259 | }
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260 | /* Allocate the necessary memory */
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261 | PRTUTF16 pwszDestText = static_cast <PRTUTF16> (RTMemAlloc (cwDest * 2));
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262 | if (pwszDestText == NULL)
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263 | {
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264 | Log (("writeToPasteboard: failed to allocate %d bytes\n", cwDest * 2));
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265 | return VERR_NO_MEMORY;
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266 | }
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267 | /* Convert the EOL */
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268 | rc = vboxClipboardUtf16WinToLin (pwszSrcText, cwSrc, pwszDestText, cwDest);
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269 | if (RT_FAILURE (rc))
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270 | {
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271 | Log (("writeToPasteboard: clipboard conversion failed. vboxClipboardUtf16WinToLin() returned %Rrc. Abandoning.\n", rc));
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272 | RTMemFree (pwszDestText);
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273 | AssertRCReturn (rc, rc);
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274 | }
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275 |
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276 | CFDataRef textData = NULL;
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277 | /* Item id is 1. Nothing special here. */
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278 | PasteboardItemID itemId = (PasteboardItemID)1;
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279 | /* Create a CData object which we could pass to the pasteboard */
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280 | if ((textData = CFDataCreate (kCFAllocatorDefault,
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281 | reinterpret_cast<UInt8*> (pwszDestText), cwDest * 2)))
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282 | {
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283 | /* Put the Utf-16 version to the pasteboard */
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284 | PasteboardPutItemFlavor (pPasteboard, itemId,
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285 | CFSTR ("public.utf16-plain-text"),
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286 | textData, 0);
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287 | }
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288 | /* Create a Utf-8 version */
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289 | char *pszDestText;
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290 | rc = RTUtf16ToUtf8 (pwszDestText, &pszDestText);
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291 | if (RT_SUCCESS (rc))
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292 | {
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293 | /* Create a CData object which we could pass to the pasteboard */
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294 | if ((textData = CFDataCreate (kCFAllocatorDefault,
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295 | reinterpret_cast<UInt8*> (pszDestText), strlen(pszDestText))))
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296 | {
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297 | /* Put the Utf-8 version to the pasteboard */
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298 | PasteboardPutItemFlavor (pPasteboard, itemId,
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299 | CFSTR ("public.utf8-plain-text"),
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300 | textData, 0);
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301 | }
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302 | RTStrFree (pszDestText);
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303 | }
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304 |
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305 | RTMemFree (pwszDestText);
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306 | rc = VINF_SUCCESS;
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307 | }
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308 | else
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309 | rc = VERR_NOT_IMPLEMENTED;
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310 |
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311 | Log (("writeToPasteboard: rc = %02X\n", rc));
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312 | return rc;
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313 | }
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314 |
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