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Rev | Author | Line No. | Line |
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75 | daniel-mar | 1 | unit RecBinUnit2 platform; |
2 | |||
3 | //////////////////////////////////////////////////////////////////////////////////// |
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76 | daniel-mar | 4 | // RECYCLE-BIN-UNIT V2 BY DANIEL MARSCHALL, VIATHINKSOFT // |
75 | daniel-mar | 5 | // E-MAIL: info@daniel-marschall.de // |
76 | daniel-mar | 6 | // Web: www.daniel-marschall.de & www.viathinksoft.de // |
75 | daniel-mar | 7 | //////////////////////////////////////////////////////////////////////////////////// |
76 | daniel-mar | 8 | // Revision: 03 JUL 2016 // |
75 | daniel-mar | 9 | // This unit is freeware, but please link to my website if you are using it! // |
10 | //////////////////////////////////////////////////////////////////////////////////// |
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11 | // Successfully tested with: // |
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12 | // Windows 95b (without IE4 Shell Extensions) // |
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13 | // Windows 95b (with IE4 Shell Extensions) // |
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76 | daniel-mar | 14 | // Windows 98 SE // |
75 | daniel-mar | 15 | // Windows NT4 SP6 // |
76 | daniel-mar | 16 | // Windows XP SP3 // |
17 | // Windows 2000 SP4 // |
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75 | daniel-mar | 18 | // Windows 2003 Server EE SP1 // |
19 | // Windows Vista // |
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20 | // Windows 7 // |
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21 | // Windows 10 // |
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22 | //////////////////////////////////////////////////////////////////////////////////// |
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23 | |||
24 | // Delphi 7 Compatibility: (TODO: compiler switches) |
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25 | // - Remove "static" |
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26 | // - Remove "strict" |
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27 | // - Remove "$REGION" |
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28 | |||
29 | // TODO: ReadBuffer überall try-except |
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30 | // TODO: Win7 : Drive GUIDs |
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31 | // TODO: Win7 : Absolute vs. Relative size limitations |
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32 | // TODO: Always check EOF before reading anything? |
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76 | daniel-mar | 33 | // TODO: Don't crash when timestamp is invalid. Do something else instead. |
75 | daniel-mar | 34 | // TODO: Is it possible to identify a Vista-file that is not named $Ixxxxxx.ext? |
35 | // TODO: RecyclerGetInfofiles() check additionally for removable device? |
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36 | // RecyclerIsValid() is false. |
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37 | // TODO: Make it possible to empty the recycle bin of one specific drive! |
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38 | // TODO: Unknown! Do you know the answer? |
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39 | // - How does Windows 9x/NT manage the daylight saving time (if it does)? |
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40 | // - How does Windows Vista+ react to a RECYCLER\ folder on a NTFS device? |
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41 | // - How does Windows Vista+ react to a RECYCLED\ folder on a FAT device? ==> Win7: is ignored! |
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42 | // - How does Windows XP react to RECYCLED\ folder on a FAT device? |
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43 | // TODO: Translate all comments from German to English |
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44 | // TODO: do we need this (maybe not all drives have A: till Z:?) http://stackoverflow.com/questions/17110543/how-to-retrieve-the-disk-signature-of-all-the-disks-in-windows-using-delphi-7 |
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45 | |||
46 | // If enabled, the deletion timestamps will not be converted by the WinAPI. |
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47 | {.$DEFINE FILETIME_DELPHI_CODE} |
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48 | |||
49 | // If a value is set in HKEY_LOCAL_MACHINE, it will be prefered, even if gpedit.msc shows "Not configured"! |
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50 | {$DEFINE GroupPolicyAcceptHKLMTrick} |
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51 | |||
52 | interface |
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53 | |||
54 | uses |
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55 | Windows, SysUtils, Classes, ContNrs, ShellAPI, Registry, Messages; |
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56 | |||
57 | const |
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77 | daniel-mar | 58 | RECBINUNIT_VERSION = '2016-07-05'; |
75 | daniel-mar | 59 | |
60 | RECYCLER_CLSID: TGUID = '{645FF040-5081-101B-9F08-00AA002F954E}'; |
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61 | NULL_GUID: TGUID = '{00000000-0000-0000-0000-000000000000}'; |
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62 | |||
63 | type |
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64 | EAPICallError = class(Exception); |
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65 | EEventCategoryNotDefined = class(Exception); |
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66 | EInvalidDrive = class(Exception); |
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67 | |||
68 | PSHQueryRBInfo = ^TSHQueryRBInfo; |
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69 | TSHQueryRBInfo = packed record |
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76 | daniel-mar | 70 | cbSize : DWORD; |
75 | daniel-mar | 71 | i64Size : int64; |
72 | i64NumItems : int64; |
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73 | end; |
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74 | |||
75 | TRbRecycleBinItem = class(TObject) |
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76 | strict private |
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77 | function GetSource: string; |
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78 | strict protected |
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79 | FSourceAnsi: AnsiString; |
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80 | FSourceUnicode: WideString; |
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81 | FID: string; |
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82 | FSourceDrive: Char; |
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83 | FDeletionTime: TDateTime; |
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84 | FOriginalSize: int64; |
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85 | FIndexFile: string; |
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86 | FRemovedEntry: boolean; |
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87 | procedure ReadFromStream(stream: TStream); virtual; abstract; |
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88 | function GetPhysicalFile: string; virtual; abstract; // protected, because it will be read by "property" |
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89 | public |
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90 | property PhysicalFile: string read GetPhysicalFile; |
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91 | property SourceAnsi: AnsiString read FSourceAnsi; |
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92 | property SourceUnicode: WideString read FSourceUnicode; |
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93 | property Source: string read GetSource; // will bei either ANSI or Unicode, sepending on the Delphi version |
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94 | property ID: string read FID; |
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95 | property SourceDrive: Char read FSourceDrive; |
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96 | property DeletionTime: TDateTime read FDeletionTime; |
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97 | property OriginalSize: int64 read FOriginalSize; |
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98 | property IndexFile: string read FIndexFile; |
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99 | property RemovedEntry: boolean read FRemovedEntry; // the file is NOT in the recycle bin anymore! |
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100 | |||
101 | // Attention: There are not an official API calls. The delete and recover |
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102 | // functions might fail and/or damage the shell cache. Handle with care! |
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103 | function DeleteFile: boolean; virtual; abstract; |
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104 | function RecoverFile: boolean; virtual; abstract; |
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105 | function OpenFile: boolean; virtual; abstract; |
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106 | end; |
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107 | |||
76 | daniel-mar | 108 | TRbInfoAItem = class(TRbRecycleBinItem) |
75 | daniel-mar | 109 | strict protected |
110 | procedure ReadFromStream(stream: TStream); override; |
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111 | function GetPhysicalFile: string; override; |
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112 | public |
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113 | constructor Create(fs: TStream; AIndexFile: string); |
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114 | function DeleteFile: boolean; override; |
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115 | // TODO: function RecoverFile: boolean; override; |
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116 | // TODO: function OpenFile: boolean; override; |
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117 | end; |
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118 | |||
76 | daniel-mar | 119 | TRbInfoWItem = class(TRbRecycleBinItem) |
75 | daniel-mar | 120 | strict protected |
121 | procedure ReadFromStream(stream: TStream); override; |
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122 | function GetPhysicalFile: string; override; |
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123 | public |
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124 | constructor Create(fs: TStream; AIndexFile: string); |
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125 | function DeleteFile: boolean; override; |
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126 | // TODO: function RecoverFile: boolean; override; |
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127 | // TODO: function OpenFile: boolean; override; |
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128 | end; |
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129 | |||
130 | TRbVistaItem = class(TRbRecycleBinItem) |
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131 | strict protected |
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132 | procedure ReadFromStream(stream: TStream); override; |
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133 | function GetPhysicalFile: string; override; |
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134 | public |
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135 | constructor Create(fs: TStream; AIndexFile, AID: string); |
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136 | function DeleteFile: boolean; override; |
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137 | // TODO: function RecoverFile: boolean; override; |
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138 | // TODO: function OpenFile: boolean; override; |
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139 | end; |
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140 | |||
141 | TRbRecycleBin = class(TObject) |
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142 | strict private |
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143 | FFileOrDirectory: string; |
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144 | FSID: string; |
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76 | daniel-mar | 145 | FTolerantReading: boolean; |
75 | daniel-mar | 146 | public |
147 | constructor Create(AFileOrDirectory: string; ASID: string=''); |
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148 | |||
149 | function GetItem(id: string): TRbRecycleBinItem; |
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150 | procedure ListItems(list: TObjectList{TRbRecycleBinItem}); |
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151 | function CheckIndexes(slErrors: TStrings): boolean; |
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152 | |||
153 | property FileOrDirectory: string read FFileOrDirectory; |
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154 | property SID: string read FSID; |
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76 | daniel-mar | 155 | |
156 | // Allows an index file to be read, even if an incompatible multiboot combination |
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157 | // corrupted it. Default: true. |
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158 | property TolerantReading: boolean read FTolerantReading write FTolerantReading; |
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75 | daniel-mar | 159 | end; |
160 | |||
161 | // TODO: Wie sieht es aus mit Laufwerken, die nur als Mount-Point eingebunden sind? |
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162 | TRbDrive = class(TObject) |
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163 | strict private |
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164 | FDriveLetter: Char; |
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165 | |||
166 | // will return NULL_GUID in case of an error or if it is not supported |
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167 | function GetVolumeGUID: TGUID; |
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77 | daniel-mar | 168 | function GetVolumeGUIDAvailable: boolean; protected |
75 | daniel-mar | 169 | strict protected |
170 | function IsFAT: boolean; |
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171 | procedure CheckDriveExisting; |
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172 | public |
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173 | constructor Create(ADriveLetter: Char); |
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174 | |||
175 | // Wenn UserSID='', dann werden alle Recycler gefunden |
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176 | procedure ListRecycleBins(list: TObjectList{TRbRecycleBin}; UserSID: string=''); |
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177 | |||
178 | property DriveLetter: Char read FDriveLetter; |
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179 | property VolumeGUID: TGUID read GetVolumeGUID; |
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77 | daniel-mar | 180 | property VolumeGUIDAvailable: boolean read GetVolumeGUIDAvailable; |
75 | daniel-mar | 181 | function GetAPIInfo: TSHQueryRBInfo; |
182 | function GetSize: int64; |
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183 | function GetNumItems: int64; |
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184 | function IsEmpty: boolean; |
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185 | |||
186 | function GetMaxPercentUsage: integer; |
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187 | function GetNukeOnDelete: boolean; |
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188 | |||
189 | // These functions will check the global configuration and group policy, too. |
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190 | function RecyclerGetPercentUsageAutoDeterminate: integer; |
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191 | function RecyclerIsNukeOnDeleteAutoDeterminate: boolean; |
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192 | end; |
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193 | |||
194 | GPOLICYBOOL = (gpUndefined, gpEnabled, gpDisabled); |
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195 | |||
196 | TRecycleBinManager = class(TObject) |
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197 | public |
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198 | class procedure ListDrives(list: TObjectList{TRbDrive}); static; |
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199 | class function RecycleBinPossible(Drive: Char): boolean; static; |
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200 | |||
201 | class function OwnRecyclersSize: int64; static; |
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202 | class function OwnRecyclersNumItems: int64; static; |
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203 | class function OwnRecyclersEmpty: boolean; static; |
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204 | |||
205 | class function EmptyOwnRecyclers(flags: cardinal): boolean; overload; static; |
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206 | class function EmptyOwnRecyclers(sound, progress, confirmation: boolean): boolean; overload; static; |
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207 | |||
208 | class function RecyclerGetCurrentIconString: string; static; |
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209 | class function RecyclerGetDefaultIconString: string; static; |
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210 | class function RecyclerGetEmptyIconString: string; static; |
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211 | class function RecyclerGetFullIconString: string; static; |
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212 | |||
213 | class function GetGlobalMaxPercentUsage: integer; static; // TODO: In Win Vista: absolute and not relative sizes |
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214 | class function GetGlobalNukeOnDelete: boolean; static; |
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215 | class function UsesGlobalSettings: boolean; static; |
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216 | |||
217 | class function RecyclerGetName: string; static; |
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218 | class function RecyclerGetInfoTip: string; static; |
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219 | class function RecyclerGetIntroText: string; static; |
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220 | |||
221 | class function RecyclerEmptyEventGetCurrentSound: string; static; |
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222 | class function RecyclerEmptyEventGetDefaultSound: string; static; |
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223 | class function RecyclerEmptyEventGetName: string; static; |
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224 | class function RecyclerEmptyEventGetSound(ACategory: string): string; static; |
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225 | class procedure RecyclerEmptyEventGetSoundCategories(AStringList: TStringList); static; |
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226 | |||
227 | // TODO: In future also detect for other users |
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228 | // TODO: Also make a setter (incl. Message to Windows Explorer?) |
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229 | class function RecyclerGroupPolicyConfirmFileDelete: GPOLICYBOOL; static; |
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230 | class function RecyclerGroupPolicyNoRecycleFiles: GPOLICYBOOL; static; |
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231 | class function RecyclerGroupPolicyRecycleBinSize: integer; static; |
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232 | |||
233 | class function RecyclerConfirmationDialogEnabled: boolean; static; |
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234 | class procedure RecyclerConfirmationDialogSetEnabled(NewSetting: boolean); static; |
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235 | class function RecyclerShellStateConfirmationDialogEnabled: boolean; static; |
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236 | |||
237 | // Diese Funktion ist false, wenn sie z.B. unter Windows 95 ohne Internet Explorer |
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238 | // 4.0 Shell Extension ausgeführt wird. Wenn abwärtskompatibler Code geschrieben |
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239 | // werden soll, sollte RecyclerQueryFunctionAvailable() verwendet werden, da |
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240 | // unter Windows 95 folgende Funktionalitäten NICHT vorhanden sind: |
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241 | // - RecyclerIsEmpty |
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242 | // - RecyclerGetNumItems |
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243 | // - RecyclerGetSize |
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244 | // - RecyclerGetAPIInfo |
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245 | class function RecyclerQueryFunctionAvailable: boolean; static; |
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246 | |||
247 | class function RecyclerAddFileOrFolder(FileOrFolder: string; confirmation: boolean=false): boolean; static; |
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248 | end; |
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249 | |||
250 | function GPBoolToString(value: GPOLICYBOOL): string; |
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251 | |||
252 | implementation |
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253 | |||
254 | uses |
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255 | RecBinUnitLowLvl; |
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256 | |||
257 | {$REGION 'WinAPI/RTL declarations'} |
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258 | (* |
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259 | const |
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260 | {$IFDEF MSWINDOWS} |
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261 | shell32 = 'shell32.dll'; |
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262 | advapi32 = 'advapi32.dll'; |
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263 | kernel32 = 'kernel32.dll'; |
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264 | {$ENDIF} |
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265 | {$IFDEF LINUX} |
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266 | shell32 = 'libshell32.borland.so'; |
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267 | advapi32 = 'libwine.borland.so'; |
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268 | kernel32 = 'libwine.borland.so'; |
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269 | {$ENDIF} |
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270 | *) |
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271 | |||
272 | type |
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273 | SHELLSTATE = record |
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274 | Flags1: DWORD; |
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275 | (* |
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276 | BOOL fShowAllObjects : 1; |
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277 | BOOL fShowExtensions : 1; |
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278 | BOOL fNoConfirmRecycle : 1; |
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279 | |||
280 | BOOL fShowSysFiles : 1; |
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281 | BOOL fShowCompColor : 1; |
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282 | BOOL fDoubleClickInWebView : 1; |
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283 | BOOL fDesktopHTML : 1; |
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284 | BOOL fWin95Classic : 1; |
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285 | BOOL fDontPrettyPath : 1; |
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286 | BOOL fShowAttribCol : 1; // No longer used, dead bit |
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287 | BOOL fMapNetDrvBtn : 1; |
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288 | BOOL fShowInfoTip : 1; |
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289 | BOOL fHideIcons : 1; |
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290 | BOOL fWebView : 1; |
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291 | BOOL fFilter : 1; |
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292 | BOOL fShowSuperHidden : 1; |
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293 | BOOL fNoNetCrawling : 1; |
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294 | *) |
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295 | dwWin95Unused: DWORD; // Win95 only - no longer supported pszHiddenFileExts |
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296 | uWin95Unused: UINT; // Win95 only - no longer supported cbHiddenFileExts |
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297 | |||
298 | // Note: Not a typo! This is a persisted structure so we cannot use LPARAM |
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299 | lParamSort: Integer; |
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300 | iSortDirection: Integer; |
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301 | |||
302 | version: UINT; |
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303 | |||
304 | // new for win2k. need notUsed var to calc the right size of ie4 struct |
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305 | // FIELD_OFFSET does not work on bit fields |
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306 | uNotUsed: UINT; // feel free to rename and use |
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307 | Flags2: DWORD; |
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308 | (* |
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309 | BOOL fSepProcess: 1; |
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310 | // new for Whistler. |
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311 | BOOL fStartPanelOn: 1; //Indicates if the Whistler StartPanel mode is ON or OFF. |
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312 | BOOL fShowStartPage: 1; //Indicates if the Whistler StartPage on desktop is ON or OFF. |
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313 | UINT fSpareFlags : 13; |
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314 | *) |
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315 | end; |
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316 | LPSHELLSTATE = ^SHELLSTATE; |
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317 | |||
318 | const |
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319 | // Masks for the SHELLSTATE |
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320 | SSF_SHOWALLOBJECTS = $00000001; |
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321 | SSF_SHOWEXTENSIONS = $00000002; |
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322 | SSF_HIDDENFILEEXTS = $00000004; |
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323 | SSF_SERVERADMINUI = $00000004; |
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324 | SSF_SHOWCOMPCOLOR = $00000008; |
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325 | SSF_SORTCOLUMNS = $00000010; |
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326 | SSF_SHOWSYSFILES = $00000020; |
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327 | SSF_DOUBLECLICKINWEBVIEW = $00000080; |
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328 | SSF_SHOWATTRIBCOL = $00000100; |
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329 | SSF_DESKTOPHTML = $00000200; |
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330 | SSF_WIN95CLASSIC = $00000400; |
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331 | SSF_DONTPRETTYPATH = $00000800; |
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332 | SSF_SHOWINFOTIP = $00002000; |
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333 | SSF_MAPNETDRVBUTTON = $00001000; |
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334 | SSF_NOCONFIRMRECYCLE = $00008000; |
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335 | SSF_HIDEICONS = $00004000; |
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336 | SSF_FILTER = $00010000; |
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337 | SSF_WEBVIEW = $00020000; |
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338 | SSF_SHOWSUPERHIDDEN = $00040000; |
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339 | SSF_SEPPROCESS = $00080000; |
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340 | SSF_NONETCRAWLING = $00100000; |
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341 | SSF_STARTPANELON = $00200000; |
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342 | SSF_SHOWSTARTPAGE = $00400000; |
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343 | {$ENDREGION} |
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344 | |||
345 | resourcestring |
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346 | LNG_API_CALL_ERROR = 'Error while calling the API. Additional information: "%s".'; |
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347 | LNG_NOT_CALLABLE = '%s not callable'; |
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348 | LNG_ERROR_CODE = '%s (Arguments: %s) returns error code %s'; |
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349 | LNG_FILE_NOT_FOUND = 'File not found: %s'; |
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76 | daniel-mar | 350 | LNG_INVALID_INFO_FORMAT = 'Unexpected record size: %s'; |
75 | daniel-mar | 351 | LNG_DRIVE_NOT_EXISTING = 'Drive %s does not exist.'; |
352 | |||
353 | const |
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354 | C_SHQueryRecycleBin = 'SHQueryRecycleBinA'; |
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355 | C_GetVolumeNameForVolumeMountPoint = 'GetVolumeNameForVolumeMountPointA'; |
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356 | C_SHEmptyRecycleBinA = 'SHEmptyRecycleBinA'; |
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357 | C_SHGetSettings = 'SHGetSettings'; |
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358 | C_SHGetSetSettings = 'SHGetSetSettings'; |
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359 | |||
360 | type |
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361 | TSHQueryRecycleBin = function(pszRootPath: LPCTSTR; var pSHQueryRBInfo: TSHQueryRBInfo): HRESULT; stdcall; |
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362 | TGetVolumeNameForVolumeMountPoint = function(lpszVolumeMountPoint: LPCTSTR; lpszVolumeName: LPTSTR; cchBufferLength: DWORD): BOOL; stdcall; |
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363 | TSHEmptyRecycleBin = function(Wnd: HWND; pszRootPath: PChar; dwFlags: DWORD): HRESULT; stdcall; |
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364 | TSHGetSettings = procedure(var lpss: SHELLSTATE; dwMask: DWORD) stdcall; |
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365 | TSHGetSetSettings = procedure(var lpss: SHELLSTATE; dwMask: DWORD; bSet: BOOL) stdcall; |
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366 | |||
367 | function GetDriveGUID(driveLetter: Char; var guid: TGUID): DWORD; |
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368 | var |
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369 | Buffer: array[0..50] of AnsiChar; |
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370 | x: string; |
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371 | PGetVolumeNameForVolumeMountPoint: TGetVolumeNameForVolumeMountPoint; |
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372 | RBHandle: THandle; |
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373 | begin |
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374 | RBHandle := LoadLibrary(kernel32); |
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375 | try |
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376 | if RBHandle <> 0 then |
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377 | begin |
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378 | PGetVolumeNameForVolumeMountPoint := GetProcAddress(RBHandle, C_GetVolumeNameForVolumeMountPoint); |
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379 | if not Assigned(@PGetVolumeNameForVolumeMountPoint) then |
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380 | begin |
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381 | result := GetLastError; |
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382 | FreeLibrary(RBHandle); |
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383 | RBHandle := 0; |
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384 | end |
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385 | else |
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386 | begin |
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387 | if PGetVolumeNameForVolumeMountPoint(PAnsiChar(driveLetter+':\'), Buffer, SizeOf(Buffer)) then |
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388 | begin |
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389 | x := buffer; |
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390 | x := copy(x, 11, 38); |
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391 | guid := StringToGUID(x); |
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392 | result := ERROR_SUCCESS; |
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393 | end |
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394 | else |
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395 | result := GetLastError; |
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396 | end; |
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397 | end |
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398 | else result := GetLastError; |
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399 | finally |
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400 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
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401 | end; |
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402 | end; |
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403 | |||
404 | function FileTimeToDateTime(FileTime: FILETIME): TDateTime; |
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405 | {$IFDEF FILETIME_DELPHI_CODE} |
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406 | var |
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407 | SystemTime: TSystemTime; |
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408 | nowUTC: TDateTime; |
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409 | gmtDifference: int64; |
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410 | begin |
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411 | GetSystemTime(SystemTime); |
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412 | with SystemTime do |
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413 | begin |
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414 | // http://www.delphipraxis.net/post340194.html#34019 |
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415 | nowUTC := EncodeDate(wYear, wMonth, wDay) + |
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416 | EncodeTime(wHour, wMinute, wSecond, wMilliseconds); |
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417 | end; |
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418 | |||
419 | gmtDifference := datetimetounix(nowUTC) - datetimetounix(Now); |
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420 | |||
421 | // http://www.e-fense.com/helix/Docs/Recycler_Bin_Record_Reconstruction.pdf states: |
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422 | // UnixTime = 0.0000001 * NTTime + 11644473600 |
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423 | // This is wrong! The correct formula is: |
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424 | // UnixTime = 0.0000001 * NTTime - 11644473600 + c * 3600 |
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425 | // c = GMT-Difference (MEZ = 1) inclusive daylight saving time (+3600 seconds) |
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426 | result := unixtodatetime(round(0.0000001 * int64(FileTime)) - 11644473600 - gmtDifference); |
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427 | {$ELSE} |
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428 | var |
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429 | LocalTime: TFileTime; |
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430 | DOSTime: Integer; |
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431 | begin |
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432 | FileTimeToLocalFileTime(FileTime, LocalTime); |
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433 | FileTimeToDosDateTime(LocalTime, LongRec(DOSTime).Hi, LongRec(DOSTime).Lo); |
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434 | Result := FileDateToDateTime(DOSTime); |
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435 | {$ENDIF} |
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436 | end; |
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437 | |||
438 | function DeleteDirectory(const Name: string): boolean; |
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439 | var |
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440 | F: TSearchRec; |
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441 | begin |
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442 | result := true; |
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443 | if FindFirst(IncludeTrailingPathDelimiter(Name) + '*', faAnyFile, F) = 0 then |
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444 | begin |
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445 | try |
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446 | repeat |
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447 | if F.Attr and faDirectory <> 0 then |
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448 | begin |
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449 | if (F.Name <> '.') and (F.Name <> '..') then |
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450 | begin |
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451 | result := result and DeleteDirectory(IncludeTrailingPathDelimiter(Name) + F.Name); |
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452 | end; |
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453 | end |
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454 | else |
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455 | begin |
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456 | if not DeleteFile(IncludeTrailingPathDelimiter(Name) + F.Name) then result := false; |
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457 | end; |
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458 | until FindNext(F) <> 0; |
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459 | finally |
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460 | FindClose(F); |
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461 | end; |
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462 | if not RemoveDir(Name) then result := false; |
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463 | end; |
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464 | end; |
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465 | |||
466 | function DriveLetterToDriveNumber(driveLetter: Char): integer; |
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467 | var |
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468 | tmp: string; |
||
469 | begin |
||
470 | tmp := LowerCase(driveLetter); |
||
471 | result := Ord(tmp[1])-Ord('a'); |
||
472 | end; |
||
473 | |||
474 | function GetStringFromDLL(filename: string; num: integer): string; |
||
475 | const |
||
476 | // Source: http://www.eggheadcafe.com/forumarchives/vcmfc/sep2005/post23917443.asp |
||
477 | MAX_BUF = 4097; // OK? |
||
478 | var |
||
479 | hLib: THandle; |
||
480 | buf: array[0..MAX_BUF] of char; |
||
481 | begin |
||
482 | hLib := LoadLibrary(PChar(filename)); |
||
483 | try |
||
484 | LoadString(hLib, num, buf, sizeof(buf)); |
||
485 | result := buf; |
||
486 | finally |
||
487 | FreeLibrary(hLib); |
||
488 | end; |
||
489 | end; |
||
490 | |||
491 | function ExpandEnvStr(const szInput: string): string; |
||
492 | const |
||
493 | MAXSIZE = 32768; // laut PSDK sind 32k das Maximum |
||
494 | begin |
||
495 | // Source: http://www.delphi-library.de/topic_Umgebungsvariable+in+einem+String+aufloesen_20516,0.html |
||
496 | SetLength(Result,MAXSIZE); |
||
497 | SetLength(Result,ExpandEnvironmentStrings(pchar(szInput), |
||
498 | @Result[1],length(Result))-1); //-1 um abschließendes #0 zu verwerfen |
||
499 | end; |
||
500 | |||
501 | function DecodeReferenceString(s: string): string; |
||
502 | var |
||
503 | dll, id, lang, cache: string; |
||
504 | sl, sl2: tstringlist; |
||
505 | begin |
||
506 | // Beispiele |
||
507 | // Papierkorb -- Windows 95 |
||
508 | // @C:\WINNT\system32\shell32.dll,-8964@1031,Papierkorb -- Windows 2000 |
||
509 | |||
510 | if Copy(s, 1, 1) = '@' then |
||
511 | begin |
||
512 | // Referenz auf eine DLL |
||
513 | // @<dll>,-<id>[@<lang>][,<cache>] |
||
514 | |||
515 | sl := TStringList.Create; |
||
516 | try |
||
517 | // '@' am Anfang entfernen |
||
518 | s := Copy(s, 2, length(s)-1); |
||
519 | |||
520 | // Nach ',' auftrennen |
||
521 | // sl[0] --> dll |
||
522 | // sl[1] --> -id@lang |
||
523 | // sl[2] --> cache |
||
524 | sl.CommaText := s; |
||
525 | |||
526 | if sl.Count > 2 then |
||
527 | begin |
||
528 | // Das Ergebnis ist bereits im Klartext vorhanden und muss nicht extrahiert werden |
||
529 | // Ist bei Windows 2000 der Fall |
||
530 | cache := sl[2]; |
||
531 | result := cache; |
||
532 | exit; |
||
533 | end; |
||
534 | |||
535 | if sl.Count > 1 then |
||
536 | begin |
||
537 | dll := sl[0]; |
||
538 | |||
539 | sl2 := TStringList.Create; |
||
540 | try |
||
541 | // Nach '@' auftrennen |
||
542 | // sl2[0] --> id |
||
543 | // sl2[1] --> lang |
||
544 | sl2.CommaText := StringReplace(sl[1], '@', ',', [rfReplaceAll]); |
||
545 | |||
546 | id := sl2[0]; |
||
547 | |||
548 | if sl2.Count > 1 then |
||
549 | begin |
||
550 | // ToDo: In Zukunft beachten, sofern möglich |
||
551 | lang := sl2[1]; |
||
552 | end; |
||
553 | |||
554 | // Umgebungsvariablen erkennen und Minuszeichen entfernen |
||
555 | result := GetStringFromDLL(ExpandEnvStr(dll), -StrToInt(id)); |
||
556 | finally |
||
557 | sl2.Free; |
||
558 | end; |
||
559 | end |
||
560 | else |
||
561 | begin |
||
562 | // Zu wenige Informationen! |
||
563 | |||
564 | result := ''; |
||
565 | end; |
||
566 | finally |
||
567 | sl.Free; |
||
568 | end; |
||
569 | end |
||
570 | else |
||
571 | begin |
||
572 | // Kein Hinweis auf eine Referenz |
||
573 | result := s; |
||
574 | end; |
||
575 | end; |
||
576 | |||
577 | function GPBoolToString(value: GPOLICYBOOL): string; |
||
578 | begin |
||
579 | case value of |
||
580 | gpUndefined: result := 'Not configured'; |
||
581 | gpEnabled: result := 'Enabled'; |
||
582 | gpDisabled: result := 'Disabled'; |
||
583 | end; |
||
584 | end; |
||
585 | |||
586 | { TRbRecycleBin } |
||
587 | |||
588 | constructor TRbRecycleBin.Create(AFileOrDirectory: string; ASID: string=''); |
||
589 | begin |
||
590 | inherited Create; |
||
591 | |||
592 | FFileOrDirectory := AFileOrDirectory; |
||
593 | FSID := ASID; |
||
76 | daniel-mar | 594 | TolerantReading := true; |
75 | daniel-mar | 595 | end; |
596 | |||
597 | // TODO: also a function that tests if the data files are still existing |
||
598 | function TRbRecycleBin.CheckIndexes(slErrors: TStrings): boolean; |
||
599 | |||
600 | procedure _Assert(assertion: boolean; msg: string; args: array of const); |
||
601 | begin |
||
602 | if not assertion then |
||
603 | begin |
||
604 | slErrors.Add(Format(msg, args)); |
||
605 | result := false; |
||
606 | end; |
||
607 | end; |
||
608 | |||
609 | procedure _HandleIndexFile(AFile: string); |
||
610 | var |
||
611 | fs: TFileStream; |
||
76 | daniel-mar | 612 | infoHdr: TRbInfoHeader; |
75 | daniel-mar | 613 | resourcestring |
614 | LNG_IDXERR_VISTA_FILESIZE = '%s: Vista index file has wrong size'; |
||
615 | LNG_IDXERR_INFO_RECSIZE_UNEXPECTED = '%s: record size unexpected'; |
||
616 | LNG_IDXERR_INFO_UNEXPECTED_EOF = '%s: file size wrong'; |
||
617 | begin |
||
618 | fs := TFileStream.Create(AFile, fmOpenRead); |
||
619 | try |
||
620 | fs.Seek(0, soFromBeginning); |
||
621 | |||
622 | if SameText(copy(ExtractFileName(AFile), 1, 2), '$I') then |
||
623 | begin |
||
624 | _Assert(fs.Size = SizeOf(TRbVistaItem), LNG_IDXERR_VISTA_FILESIZE, [AFile]); |
||
625 | end |
||
76 | daniel-mar | 626 | else if SameText(ExtractFileName(AFile), 'INFO') or |
627 | SameText(ExtractFileName(AFile), 'INFO2') then |
||
75 | daniel-mar | 628 | begin |
629 | fs.ReadBuffer(infoHdr, SizeOf(infoHdr)); |
||
76 | daniel-mar | 630 | _Assert((infoHdr.recordLength = SizeOf(TRbInfoRecordA)) or |
631 | (infoHdr.recordLength = SizeOf(TRbInfoRecordW)), LNG_IDXERR_INFO_RECSIZE_UNEXPECTED, [AFile]); |
||
75 | daniel-mar | 632 | _Assert((fs.Size-fs.Position) mod infoHdr.recordLength = 0, LNG_IDXERR_INFO_UNEXPECTED_EOF, [AFile]); |
76 | daniel-mar | 633 | // TODO: we can also check infoHdr.totalSize or infoHdr.totalEntries |
75 | daniel-mar | 634 | end |
76 | daniel-mar | 635 | else Assert(false); |
75 | daniel-mar | 636 | |
637 | // TODO: we could check each item for invalid stuff...? |
||
638 | finally |
||
639 | FreeAndNil(fs); |
||
640 | end; |
||
641 | end; |
||
642 | |||
643 | procedure _HandleVistaDir(ADirectory: string); |
||
644 | var |
||
645 | SR: TSearchRec; |
||
646 | begin |
||
647 | ADirectory := IncludeTrailingPathDelimiter(ADirectory); |
||
648 | |||
649 | if FindFirst(ADirectory + '$I*', faAnyFile, SR) = 0 then |
||
650 | begin |
||
651 | repeat |
||
652 | _HandleIndexFile(ADirectory+sr.Name); |
||
653 | until FindNext(SR) <> 0; |
||
654 | end; |
||
655 | FindClose(SR); |
||
656 | end; |
||
657 | |||
658 | begin |
||
659 | result := true; |
||
660 | |||
661 | if DirectoryExists(FFileOrDirectory) then // Vista, as well as directories with INFO and INFO2 |
||
662 | begin |
||
663 | _HandleVistaDir(FFileOrDirectory); |
||
664 | |||
665 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2') then |
||
666 | begin |
||
667 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2'); |
||
668 | end; |
||
669 | |||
670 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO') then |
||
671 | begin |
||
672 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO'); |
||
673 | end; |
||
674 | end |
||
675 | else if FileExists(FFileOrDirectory) then |
||
676 | begin |
||
677 | _HandleIndexFile(FFileOrDirectory); |
||
678 | end |
||
679 | else raise Exception.CreateFmt(LNG_FILE_NOT_FOUND, [FFileOrDirectory]); |
||
680 | end; |
||
681 | |||
682 | function TRbRecycleBin.GetItem(id: string): TRbRecycleBinItem; |
||
683 | |||
684 | procedure _HandleIndexFile(AFile: string); |
||
685 | var |
||
686 | fs: TFileStream; |
||
76 | daniel-mar | 687 | infoHdr: TRbInfoHeader; |
75 | daniel-mar | 688 | testItem: TRbRecycleBinItem; |
689 | begin |
||
690 | fs := TFileStream.Create(AFile, fmOpenRead); |
||
691 | try |
||
692 | fs.Seek(0, soFromBeginning); |
||
693 | |||
694 | if fs.Size = SizeOf(TRbVistaRecord) then |
||
695 | begin |
||
696 | if SameText(ExtractFileName(AFile), '$I'+id) then |
||
697 | begin |
||
698 | result := TRbVistaItem.Create(fs, AFile, id); |
||
699 | end; |
||
700 | end |
||
701 | else |
||
702 | begin |
||
703 | fs.ReadBuffer(infoHdr, SizeOf(infoHdr)); |
||
704 | case infoHdr.recordLength of |
||
76 | daniel-mar | 705 | SizeOf(TRbInfoRecordA): |
75 | daniel-mar | 706 | begin |
707 | while fs.Position < fs.size do |
||
708 | begin |
||
76 | daniel-mar | 709 | testItem := TRbInfoAItem.Create(fs, AFile); |
75 | daniel-mar | 710 | if testItem.ID = id then |
711 | begin |
||
712 | result := testItem; |
||
713 | break; |
||
714 | end; |
||
715 | end; |
||
716 | end; |
||
76 | daniel-mar | 717 | SizeOf(TRbInfoRecordW): |
75 | daniel-mar | 718 | begin |
719 | while fs.Position < fs.size do |
||
720 | begin |
||
76 | daniel-mar | 721 | testItem := TRbInfoWItem.Create(fs, AFile); |
75 | daniel-mar | 722 | if testItem.ID = id then |
723 | begin |
||
724 | result := testItem; |
||
725 | break; |
||
726 | end; |
||
727 | end; |
||
728 | end |
||
729 | else |
||
730 | begin |
||
731 | raise Exception.CreateFmt(LNG_INVALID_INFO_FORMAT, [AFile]); |
||
732 | end; |
||
733 | end; |
||
734 | end; |
||
735 | finally |
||
736 | FreeAndNil(fs); |
||
737 | end; |
||
738 | end; |
||
739 | |||
740 | procedure _HandleVistaDir(ADirectory: string); |
||
741 | var |
||
742 | SR: TSearchRec; |
||
743 | fs: TFileStream; |
||
744 | id: string; |
||
745 | begin |
||
746 | ADirectory := IncludeTrailingPathDelimiter(ADirectory); |
||
747 | |||
748 | if FileExists(ADirectory + '$I' + id) then |
||
749 | begin |
||
750 | fs := TFileStream.Create(ADirectory+sr.Name, fmOpenRead); |
||
751 | try |
||
752 | fs.Seek(0, soFromBeginning); |
||
753 | result := TRbVistaItem.Create(fs, ADirectory+sr.Name, id); |
||
754 | finally |
||
755 | FreeAndNil(fs); |
||
756 | end; |
||
757 | end; |
||
758 | end; |
||
759 | |||
760 | begin |
||
761 | result := nil; |
||
762 | |||
763 | if DirectoryExists(FFileOrDirectory) then // Vista, as well as directories with INFO and INFO2 |
||
764 | begin |
||
765 | _HandleVistaDir(FFileOrDirectory); |
||
766 | if Assigned(result) then exit; |
||
767 | |||
768 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2') then |
||
769 | begin |
||
770 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2'); |
||
771 | if Assigned(result) then exit; |
||
772 | end; |
||
773 | |||
774 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO') then |
||
775 | begin |
||
776 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO'); |
||
777 | if Assigned(result) then exit; |
||
778 | end; |
||
779 | end |
||
780 | else if FileExists(FFileOrDirectory) then |
||
781 | begin |
||
782 | _HandleIndexFile(FFileOrDirectory); |
||
783 | if Assigned(result) then exit; |
||
784 | end |
||
785 | else raise Exception.CreateFmt(LNG_FILE_NOT_FOUND, [FFileOrDirectory]); |
||
786 | end; |
||
787 | |||
788 | procedure TRbRecycleBin.ListItems(list: TObjectList{TRbRecycleBinItem}); |
||
789 | |||
790 | procedure _HandleIndexFile(AFile: string); |
||
791 | var |
||
792 | fs: TFileStream; |
||
76 | daniel-mar | 793 | infoHdr: TRbInfoHeader; |
75 | daniel-mar | 794 | testID: string; |
76 | daniel-mar | 795 | wTest: TRbInfoWItem; |
796 | bakPosition: int64; |
||
75 | daniel-mar | 797 | begin |
798 | fs := TFileStream.Create(AFile, fmOpenRead); |
||
799 | try |
||
800 | fs.Seek(0, soFromBeginning); |
||
801 | |||
802 | if fs.Size = SizeOf(TRbVistaRecord) then |
||
803 | begin |
||
804 | testID := ExtractFileName(AFile); |
||
805 | if SameText(copy(testID, 1, 2), '$I') then |
||
806 | testID := copy(testID, 3, Length(testID)-2) |
||
807 | else |
||
76 | daniel-mar | 808 | testID := ''; // Just in case the user wants to read a single Vista file, but without the $I name |
75 | daniel-mar | 809 | |
810 | list.Add(TRbVistaItem.Create(fs, AFile, testID)); |
||
811 | end |
||
812 | else |
||
813 | begin |
||
76 | daniel-mar | 814 | if TolerantReading then |
815 | begin |
||
816 | // This is a special treatment how to recover data from an INFO/INFO2 file |
||
817 | // which was corrupted by an incompatible multiboot configuration. |
||
818 | // Example: |
||
819 | // - Win95 without IE4 and WinNT4 both write into the INFO file. But Win95 appends the ANSI record and WinNT appends an Unicode record. |
||
820 | // - Win95 with IE4 and Windows 2000/2003/XP write into the INFO2 file. But Win9x appends the ANSI record and Win2k+ appends an Unicode record. |
||
821 | fs.ReadBuffer(infoHdr, SizeOf(infoHdr)); |
||
822 | while fs.Position < fs.size do |
||
75 | daniel-mar | 823 | begin |
76 | daniel-mar | 824 | // Can we actually read a Unicode record? |
825 | if fs.Position + SizeOf(TRbInfoRecordW) <= fs.Size then |
||
75 | daniel-mar | 826 | begin |
76 | daniel-mar | 827 | // Try to read the Unicode record and check if it is valid |
828 | // In case it is no Unicode record, then the Unicode part will be the |
||
829 | // ANSI source name of the next record. In this case, we won't get |
||
830 | // a ':' at the Unicode string. |
||
831 | bakPosition := fs.Position; |
||
832 | wTest := TRbInfoWItem.Create(fs, AFile); |
||
833 | if Copy(wTest.SourceUnicode, 2, 1) = ':' then |
||
834 | begin |
||
835 | // Yes, it is a valid Unicode record. |
||
836 | list.Add(wTest); |
||
837 | end |
||
838 | else |
||
839 | begin |
||
840 | // No, it is not a valid Unicode record. Jump back, and we need |
||
841 | // to assume that the following record will be a valid ANSI record. |
||
842 | fs.Position := bakPosition; |
||
843 | list.Add(TRbInfoAItem.Create(fs, AFile)); |
||
844 | end; |
||
845 | end |
||
846 | else |
||
847 | begin |
||
848 | // No, there is not enough space left for an Unicode record. |
||
849 | // So we assume that the following record will be a valid ANSI record. |
||
850 | list.Add(TRbInfoAItem.Create(fs, AFile)); |
||
75 | daniel-mar | 851 | end; |
852 | end; |
||
76 | daniel-mar | 853 | end |
854 | else |
||
855 | begin |
||
856 | // This is the code for non-tolerant reading of the records. |
||
857 | fs.ReadBuffer(infoHdr, SizeOf(infoHdr)); |
||
858 | case infoHdr.recordLength of |
||
859 | SizeOf(TRbInfoRecordA): |
||
75 | daniel-mar | 860 | begin |
76 | daniel-mar | 861 | while fs.Position < fs.size do |
862 | begin |
||
863 | list.Add(TRbInfoAItem.Create(fs, AFile)); |
||
864 | end; |
||
75 | daniel-mar | 865 | end; |
76 | daniel-mar | 866 | SizeOf(TRbInfoRecordW): |
867 | begin |
||
868 | while fs.Position < fs.size do |
||
869 | begin |
||
870 | list.Add(TRbInfoWItem.Create(fs, AFile)); |
||
871 | end; |
||
872 | end |
||
873 | else |
||
874 | begin |
||
875 | raise Exception.CreateFmt(LNG_INVALID_INFO_FORMAT, [AFile]); |
||
876 | end; |
||
75 | daniel-mar | 877 | end; |
878 | end; |
||
879 | end; |
||
880 | finally |
||
881 | FreeAndNil(fs); |
||
882 | end; |
||
883 | end; |
||
884 | |||
885 | procedure _HandleVistaDir(ADirectory: string); |
||
886 | var |
||
887 | SR: TSearchRec; |
||
888 | fs: TFileStream; |
||
889 | id: string; |
||
890 | begin |
||
891 | ADirectory := IncludeTrailingPathDelimiter(ADirectory); |
||
892 | |||
893 | if FindFirst(ADirectory + '$I*', faAnyFile, SR) = 0 then |
||
894 | begin |
||
895 | repeat |
||
896 | id := sr.Name; |
||
897 | { id := ChangeFileExt(id, ''); } // Removed code: We keep the file extention as part of the ID, because we do not know if the ID is otherwise unique |
||
898 | id := Copy(id, 3, Length(id)-2); |
||
899 | |||
900 | fs := TFileStream.Create(ADirectory+sr.Name, fmOpenRead); |
||
901 | try |
||
902 | fs.Seek(0, soFromBeginning); |
||
903 | list.Add(TRbVistaItem.Create(fs, ADirectory+sr.Name, id)); |
||
904 | finally |
||
905 | FreeAndNil(fs); |
||
906 | end; |
||
907 | until FindNext(SR) <> 0; |
||
908 | end; |
||
909 | FindClose(SR); |
||
910 | end; |
||
911 | |||
912 | begin |
||
913 | if DirectoryExists(FFileOrDirectory) then // Vista, as well as directories with INFO and INFO2 |
||
914 | begin |
||
915 | _HandleVistaDir(FFileOrDirectory); |
||
916 | |||
917 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2') then |
||
918 | begin |
||
919 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2'); |
||
920 | end; |
||
921 | |||
922 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO') then |
||
923 | begin |
||
924 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO'); |
||
925 | end; |
||
926 | end |
||
927 | else if FileExists(FFileOrDirectory) then |
||
928 | begin |
||
76 | daniel-mar | 929 | _HandleIndexFile(FFileOrDirectory); // Either INFO, or INFO2, or a single Vista index file |
75 | daniel-mar | 930 | end |
931 | else raise Exception.CreateFmt(LNG_FILE_NOT_FOUND, [FFileOrDirectory]); |
||
932 | end; |
||
933 | |||
934 | { TRbDrive } |
||
935 | |||
936 | procedure TRbDrive.CheckDriveExisting; |
||
937 | begin |
||
938 | // Does the drive exist? |
||
939 | // see http://www.delphipraxis.net/post2933.html |
||
940 | if not GetLogicalDrives and (1 shl DriveLetterToDriveNumber(FDriveLetter)) <> 0 then |
||
941 | begin |
||
942 | raise EInvalidDrive.CreateFmt(LNG_DRIVE_NOT_EXISTING, [UpperCase(FDriveLetter)+':']); |
||
943 | end; |
||
944 | end; |
||
945 | |||
946 | constructor TRbDrive.Create(ADriveLetter: Char); |
||
947 | begin |
||
948 | inherited Create; |
||
949 | |||
950 | FDriveLetter := ADriveLetter; |
||
951 | CheckDriveExisting; |
||
952 | end; |
||
953 | |||
954 | function TRbDrive.GetAPIInfo: TSHQueryRBInfo; |
||
955 | var |
||
956 | PSHQueryRecycleBin: TSHQueryRecycleBin; |
||
957 | RBHandle: THandle; |
||
958 | res: HRESULT; |
||
959 | Path: string; |
||
960 | begin |
||
961 | Path := FDriveLetter + ':\'; |
||
962 | |||
963 | // Ref: http://www.delphipraxis.net/post1291.html |
||
964 | |||
965 | RBHandle := LoadLibrary(shell32); |
||
966 | try |
||
967 | PSHQueryRecycleBin := nil; |
||
968 | if RBHandle <> 0 then |
||
969 | begin |
||
970 | PSHQueryRecycleBin := GetProcAddress(RBHandle, C_SHQueryRecycleBin); |
||
971 | if not Assigned(@PSHQueryRecycleBin) then |
||
972 | begin |
||
973 | FreeLibrary(RBHandle); |
||
974 | RBHandle := 0; |
||
975 | end; |
||
976 | end; |
||
977 | |||
978 | FillChar(result, SizeOf(TSHQueryRBInfo), 0); |
||
979 | result.cbSize := SizeOf(TSHQueryRBInfo); |
||
980 | |||
981 | if (RBHandle <> 0) and Assigned(PSHQueryRecycleBin) then |
||
982 | begin |
||
983 | res := PSHQueryRecycleBin(PChar(Path), result); |
||
984 | // if Succeeded(res) then |
||
985 | if res = S_OK then |
||
986 | begin |
||
987 | // Alles OK, unser result hat nun die gewünschten Daten. |
||
988 | end |
||
989 | else |
||
990 | begin |
||
991 | // Since Windows Vista, SHQueryRecycleBin will fail with E_FAIL (80004005) |
||
992 | // if Path is a floppy or CD drive... |
||
993 | raise EAPICallError.CreateFmt(LNG_API_CALL_ERROR, [Format(LNG_ERROR_CODE, [C_SHQueryRecycleBin, Path, '0x'+IntToHex(res, 2*SizeOf(HRESULT))])]); |
||
994 | end; |
||
995 | end |
||
996 | else |
||
997 | raise EAPICallError.CreateFmt(LNG_API_CALL_ERROR, [Format(LNG_NOT_CALLABLE, [C_SHQueryRecycleBin])]); |
||
998 | finally |
||
999 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
||
1000 | end; |
||
1001 | end; |
||
1002 | |||
1003 | function TRbDrive.GetMaxPercentUsage: integer; |
||
1004 | var |
||
1005 | reg: TRegistry; |
||
1006 | purgeInfo: TRbWin95PurgeInfo; |
||
1007 | const |
||
1008 | RES_DEFAULT = 10; // Windows 95 - Standardwert |
||
1009 | begin |
||
1010 | result := RES_DEFAULT; |
||
1011 | |||
1012 | reg := TRegistry.Create; |
||
1013 | try |
||
1014 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1015 | |||
1016 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1017 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1018 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
1019 | begin |
||
1020 | if reg.OpenKeyReadOnly(FDriveLetter) then |
||
1021 | begin |
||
1022 | if reg.ValueExists('Percent') then |
||
1023 | begin |
||
1024 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
1025 | |||
1026 | result := reg.ReadInteger('Percent'); |
||
1027 | end; |
||
1028 | end |
||
1029 | else |
||
1030 | begin |
||
1031 | if reg.ValueExists('PurgeInfo') then |
||
1032 | begin |
||
1033 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
1034 | |||
1035 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
||
1036 | |||
1037 | result := purgeInfo.percentDrive[FDriveLetter]; |
||
1038 | end; |
||
1039 | end; |
||
1040 | |||
1041 | reg.CloseKey; |
||
1042 | end; |
||
1043 | finally |
||
1044 | reg.Free; |
||
1045 | end; |
||
1046 | end; |
||
1047 | |||
1048 | function TRbDrive.RecyclerGetPercentUsageAutoDeterminate: integer; |
||
1049 | var |
||
1050 | gpSetting: integer; |
||
1051 | begin |
||
1052 | gpSetting := TRecycleBinManager.RecyclerGroupPolicyRecycleBinSize; |
||
1053 | if gpSetting <> -1 then |
||
1054 | result := gpSetting |
||
1055 | else if TRecycleBinManager.UsesGlobalSettings then |
||
1056 | result := TRecycleBinManager.GetGlobalMaxPercentUsage |
||
1057 | else |
||
1058 | result := GetMaxPercentUsage; |
||
1059 | end; |
||
1060 | |||
1061 | function TRbDrive.RecyclerIsNukeOnDeleteAutoDeterminate: boolean; |
||
1062 | begin |
||
1063 | if TRecycleBinManager.RecyclerGroupPolicyNoRecycleFiles = gpEnabled then |
||
1064 | result := true |
||
1065 | else if TRecycleBinManager.UsesGlobalSettings then |
||
1066 | result := TRecycleBinManager.GetGlobalNukeOnDelete |
||
1067 | else |
||
1068 | result := GetNukeOnDelete; |
||
1069 | end; |
||
1070 | |||
1071 | function TRbDrive.GetNukeOnDelete: boolean; |
||
1072 | var |
||
1073 | reg: TRegistry; |
||
1074 | purgeInfo: TRbWin95PurgeInfo; |
||
1075 | const |
||
1076 | RES_DEFAULT = false; // Windows 95 - Standardwert |
||
1077 | begin |
||
1078 | result := RES_DEFAULT; |
||
1079 | |||
1080 | reg := TRegistry.Create; |
||
1081 | try |
||
1082 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1083 | |||
1084 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1085 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1086 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
1087 | begin |
||
1088 | if reg.OpenKeyReadOnly(FDriveLetter) then |
||
1089 | begin |
||
1090 | if reg.ValueExists('NukeOnDelete') then |
||
1091 | begin |
||
1092 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
1093 | |||
1094 | result := reg.ReadBool('NukeOnDelete'); |
||
1095 | end; |
||
1096 | end |
||
1097 | else |
||
1098 | begin |
||
1099 | if reg.ValueExists('PurgeInfo') then |
||
1100 | begin |
||
1101 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
1102 | |||
1103 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
||
1104 | |||
1105 | result := ((purgeInfo.NukeOnDeleteBits shr DriveLetterToDriveNumber(FDriveLetter)) and 1) = 1; |
||
1106 | end; |
||
1107 | end; |
||
1108 | |||
1109 | reg.CloseKey; |
||
1110 | end; |
||
1111 | finally |
||
1112 | reg.Free; |
||
1113 | end; |
||
1114 | end; |
||
1115 | |||
1116 | function TRbDrive.GetNumItems: int64; |
||
1117 | begin |
||
1118 | result := GetAPIInfo.i64NumItems; |
||
1119 | end; |
||
1120 | |||
1121 | function TRbDrive.GetSize: int64; |
||
1122 | begin |
||
1123 | result := GetAPIInfo.i64Size; |
||
1124 | end; |
||
1125 | |||
1126 | function TRbDrive.GetVolumeGUID: TGUID; |
||
1127 | begin |
||
1128 | if GetDriveGUID(FDriveLetter, result) <> ERROR_SUCCESS then |
||
1129 | begin |
||
1130 | result := NULL_GUID; |
||
1131 | end; |
||
1132 | end; |
||
1133 | |||
77 | daniel-mar | 1134 | function TRbDrive.GetVolumeGUIDAvailable: boolean; |
1135 | begin |
||
1136 | result := not IsEqualGUID(VolumeGUID, NULL_GUID); |
||
1137 | end; |
||
1138 | |||
75 | daniel-mar | 1139 | function TRbDrive.IsEmpty: boolean; |
1140 | begin |
||
1141 | result := GetNumItems = 0; |
||
1142 | end; |
||
1143 | |||
1144 | function TRbDrive.IsFAT: boolean; |
||
1145 | var |
||
1146 | Dummy2: DWORD; |
||
1147 | Dummy3: DWORD; |
||
1148 | FileSystem: array[0..MAX_PATH] of char; |
||
1149 | VolumeName: array[0..MAX_PATH] of char; |
||
1150 | s: string; |
||
1151 | begin |
||
1152 | s := FDriveLetter + DriveDelim + PathDelim; // ohne die Auslagerung in einen String kommt es zu einer AV in ntdll |
||
1153 | GetVolumeInformation(PChar(s), VolumeName, |
||
1154 | SizeOf(VolumeName), nil, Dummy2, Dummy3, FileSystem, SizeOf(FileSystem)); |
||
1155 | result := uppercase(copy(FileSystem, 0, 3)) = 'FAT'; |
||
1156 | end; |
||
1157 | |||
1158 | procedure TRbDrive.ListRecycleBins(list: TObjectList{TRbRecycleBin}; UserSID: string=''); |
||
1159 | |||
1160 | procedure _AddSIDFolders(dir: string; wholeFolder: boolean); |
||
1161 | var |
||
1162 | SR: TSearchRec; |
||
1163 | begin |
||
1164 | dir := IncludeTrailingPathDelimiter(dir); |
||
1165 | if FindFirst(dir+'S-*', faAnyFile, SR) = 0 then |
||
1166 | begin |
||
1167 | try |
||
1168 | repeat |
||
1169 | if (SR.Name = '.') or (SR.Name = '..') or not DirectoryExists(dir + SR.Name) then continue; |
||
1170 | |||
1171 | if wholeFolder then |
||
1172 | begin |
||
1173 | // Vista |
||
1174 | list.Add(TRbRecycleBin.Create(dir+SR.Name, SR.Name)); |
||
1175 | end |
||
1176 | else |
||
1177 | begin |
||
1178 | // Win95 .. WinXP |
||
1179 | if FileExists(IncludeTrailingPathDelimiter(dir+SR.Name) + 'INFO2') then |
||
1180 | list.Add(TRbRecycleBin.Create(IncludeTrailingPathDelimiter(dir+SR.Name) + 'INFO2', SR.Name)); |
||
1181 | if FileExists(IncludeTrailingPathDelimiter(dir+SR.Name) + 'INFO') then |
||
1182 | list.Add(TRbRecycleBin.Create(IncludeTrailingPathDelimiter(dir+SR.Name) + 'INFO', SR.Name)); |
||
1183 | end; |
||
1184 | until FindNext(SR) <> 0; |
||
1185 | finally |
||
1186 | FindClose(SR); |
||
1187 | end; |
||
1188 | end; |
||
1189 | end; |
||
1190 | |||
1191 | var |
||
1192 | dir: string; |
||
1193 | begin |
||
1194 | // Find recyclers from Windows Vista or higher |
||
1195 | |||
1196 | if IsFAT then |
||
1197 | begin |
||
1198 | dir := FDriveLetter + DriveDelim + PathDelim + '$recycle.bin' + PathDelim; |
||
1199 | if DirectoryExists(dir) then |
||
1200 | begin |
||
1201 | list.Add(TRbRecycleBin.Create(dir)); |
||
1202 | end; |
||
1203 | end |
||
1204 | else |
||
1205 | begin |
||
1206 | if UserSID <> '' then |
||
1207 | begin |
||
1208 | dir := FDriveLetter + DriveDelim + PathDelim + '$recycle.bin' + PathDelim + UserSID + PathDelim; |
||
1209 | if DirectoryExists(dir) then |
||
1210 | begin |
||
1211 | list.Add(TRbRecycleBin.Create(dir, UserSID)); |
||
1212 | end; |
||
1213 | end |
||
1214 | else |
||
1215 | begin |
||
1216 | _AddSIDFolders(FDriveLetter + DriveDelim + PathDelim + '$recycle.bin', true); |
||
1217 | end; |
||
1218 | end; |
||
1219 | |||
1220 | // Find recyclers from Windows before Vista |
||
1221 | |||
1222 | if IsFAT then |
||
1223 | begin |
||
1224 | dir := FDriveLetter + DriveDelim + PathDelim + 'Recycled' + PathDelim; |
||
1225 | |||
1226 | // Both "recycle bins" are possible if you have multiboot (but do overwrite themselfes if you empty them) |
||
1227 | if FileExists(dir + 'INFO2') then |
||
76 | daniel-mar | 1228 | list.Add(TRbRecycleBin.Create(dir + 'INFO2')); // Windows 95 with Internet Explorer 4 Extension or higher Windows 9x versions |
75 | daniel-mar | 1229 | if FileExists(dir + 'INFO') then |
1230 | list.Add(TRbRecycleBin.Create(dir + 'INFO')); // Windows 95 native |
||
1231 | end |
||
1232 | else |
||
1233 | begin |
||
1234 | if UserSID <> '' then |
||
1235 | begin |
||
1236 | dir := FDriveLetter + DriveDelim + PathDelim + 'Recycler' + PathDelim + UserSID + PathDelim; |
||
1237 | |||
1238 | if FileExists(dir + 'INFO2') then |
||
76 | daniel-mar | 1239 | list.Add(TRbRecycleBin.Create(dir + 'INFO2', UserSID)); // Windows 2000+ |
75 | daniel-mar | 1240 | if FileExists(dir + 'INFO') then |
1241 | list.Add(TRbRecycleBin.Create(dir + 'INFO', UserSID)); // Windows NT 4 |
||
1242 | end |
||
1243 | else |
||
1244 | begin |
||
1245 | _AddSIDFolders(FDriveLetter + DriveDelim + PathDelim + 'Recycler', false); |
||
1246 | end; |
||
1247 | end; |
||
1248 | end; |
||
1249 | |||
76 | daniel-mar | 1250 | { TRbInfoAItem } |
75 | daniel-mar | 1251 | |
76 | daniel-mar | 1252 | procedure TRbInfoAItem.ReadFromStream(stream: TStream); |
75 | daniel-mar | 1253 | var |
76 | daniel-mar | 1254 | r: TRbInfoRecordA; |
75 | daniel-mar | 1255 | begin |
1256 | stream.ReadBuffer(r, SizeOf(r)); |
||
1257 | |||
1258 | FSourceDrive := Chr(Ord('A') + r.sourceDrive); |
||
1259 | |||
76 | daniel-mar | 1260 | // Win95 with IE4 and Win2000+: |
1261 | // Wenn ein Eintrag aus der INFO/INFO2 gelöscht wird, dann wird das erste Byte |
||
1262 | // von sourceAnsi auf Null gesetzt, damit die ganze INFO/INFO2 Datei nicht |
||
1263 | // ständig neu geschrieben werden muss (so wie es bei Win95 und WinNT4 der Fall war). |
||
1264 | // Wir lesen den Eintrag trotzdem, da unsere Software ja auch zu forensischen |
||
1265 | // Zwecken eingesetzt werden soll. |
||
75 | daniel-mar | 1266 | if r.sourceAnsi[0] = #0 then |
1267 | begin |
||
1268 | FRemovedEntry := true; |
||
1269 | r.sourceAnsi[0] := FSourceDrive; |
||
1270 | end; |
||
1271 | |||
1272 | FSourceAnsi := r.sourceAnsi; |
||
1273 | FSourceUnicode := r.sourceAnsi; // Unicode does not exist in INFO(1) structure |
||
1274 | FID := IntToStr(r.recordNumber); |
||
1275 | FDeletionTime := FileTimeToDateTime(r.deletionTime); |
||
1276 | FOriginalSize := r.originalSize; |
||
1277 | end; |
||
1278 | |||
76 | daniel-mar | 1279 | function TRbInfoAItem.DeleteFile: boolean; |
75 | daniel-mar | 1280 | var |
1281 | r: string; |
||
1282 | begin |
||
1283 | r := GetPhysicalFile; |
||
1284 | if DirectoryExists(r) then |
||
1285 | result := DeleteDirectory(r) // Usually, the old recycle bin does not allow folders. Just to be sure, we include the code. |
||
1286 | else |
||
1287 | result := SysUtils.DeleteFile(r); // TODO: geht das oder gibt es zugriffsverletzung? --> Win95: Funktioniert |
||
1288 | |||
1289 | // TODO: nun auch den eintrag aus der INFO-Datei rausschmeißen (Datei neu schreiben) |
||
1290 | end; |
||
1291 | |||
76 | daniel-mar | 1292 | function TRbInfoAItem.GetPhysicalFile: string; |
75 | daniel-mar | 1293 | begin |
1294 | if FRemovedEntry then |
||
1295 | begin |
||
1296 | result := ''; |
||
1297 | Exit; |
||
1298 | end; |
||
1299 | |||
1300 | // e.g. C:\...\DC0.doc |
||
1301 | result := IncludeTrailingPathDelimiter(ExtractFilePath(IndexFile)) + |
||
76 | daniel-mar | 1302 | 'D' + (* SourceDrive *) SourceAnsi[1] + ID + ExtractFileExt(SourceAnsi); |
75 | daniel-mar | 1303 | end; |
1304 | |||
76 | daniel-mar | 1305 | constructor TRbInfoAItem.Create(fs: TStream; AIndexFile: string); |
75 | daniel-mar | 1306 | begin |
1307 | inherited Create; |
||
1308 | ReadFromStream(fs); |
||
1309 | FIndexFile := AIndexFile; |
||
1310 | end; |
||
1311 | |||
76 | daniel-mar | 1312 | { TRbInfoWItem } |
75 | daniel-mar | 1313 | |
76 | daniel-mar | 1314 | procedure TRbInfoWItem.ReadFromStream(stream: TStream); |
75 | daniel-mar | 1315 | var |
76 | daniel-mar | 1316 | r: TRbInfoRecordW; |
75 | daniel-mar | 1317 | begin |
1318 | stream.ReadBuffer(r, SizeOf(r)); |
||
1319 | |||
76 | daniel-mar | 1320 | // Win95 with IE4 and Win2000+: |
1321 | // Wenn ein Eintrag aus der INFO/INFO2 gelöscht wird, dann wird das erste Byte |
||
1322 | // von sourceAnsi auf Null gesetzt, damit die ganze INFO/INFO2 Datei nicht |
||
1323 | // ständig neu geschrieben werden muss (so wie es bei Win95 und WinNT4 der Fall war). |
||
75 | daniel-mar | 1324 | // Wir lesen den Eintrag trotzdem, da unsere Software ja auch zu forensischen |
1325 | // Zwecken eingesetzt werden soll. |
||
1326 | if r.sourceAnsi[0] = #0 then |
||
1327 | begin |
||
1328 | FRemovedEntry := true; |
||
1329 | r.sourceAnsi[0] := AnsiChar(r.sourceUnicode[0]); |
||
1330 | end; |
||
1331 | |||
1332 | FSourceAnsi := r.sourceAnsi; |
||
1333 | FSourceUnicode := r.sourceUnicode; |
||
1334 | FID := IntToStr(r.recordNumber); |
||
1335 | FSourceDrive := Chr(Ord('A') + r.sourceDrive); |
||
1336 | FDeletionTime := FileTimeToDateTime(r.deletionTime); |
||
1337 | FOriginalSize := r.originalSize; |
||
1338 | end; |
||
1339 | |||
76 | daniel-mar | 1340 | function TRbInfoWItem.DeleteFile: boolean; |
75 | daniel-mar | 1341 | var |
1342 | r: string; |
||
1343 | begin |
||
1344 | r := GetPhysicalFile; |
||
1345 | if DirectoryExists(r) then |
||
1346 | result := DeleteDirectory(r) |
||
1347 | else |
||
1348 | result := SysUtils.DeleteFile(r); // TODO: geht das oder gibt es zugriffsverletzung? |
||
1349 | |||
1350 | // TODO: nun auch den eintrag aus der INFO-Datei rausschmeißen (Erstes Byte auf 0 setzen) |
||
1351 | end; |
||
1352 | |||
76 | daniel-mar | 1353 | function TRbInfoWItem.GetPhysicalFile: string; |
75 | daniel-mar | 1354 | begin |
1355 | if FRemovedEntry then |
||
1356 | begin |
||
1357 | result := ''; |
||
1358 | Exit; |
||
1359 | end; |
||
1360 | |||
76 | daniel-mar | 1361 | (* |
1362 | This is actually a bit tricky... |
||
1363 | Win95 will choose the first letter of the AnsiSource name. |
||
1364 | WinNT will choose the first letter of the UnicodeSource name. |
||
1365 | WinXP will choose the driveNumber member. |
||
1366 | |||
1367 | Windows XP is kinda buggy when it comes to changing a drive letter. |
||
1368 | For example, the drive E: was changed to K: |
||
1369 | The drive letter is 04 (E), the Source name begins with E:\ and the physical file is De0.txt . |
||
1370 | After the recycle bin is opened the first time: |
||
1371 | - The recycle bin will show the file origin as K:\ and not as E:\ |
||
1372 | - The file was renamed from De0.txt to Dk0.txt |
||
1373 | - The file can be recovered at this time |
||
1374 | When the recycle bin is closed, the INFO2 file will not be corrected (which is a bug). |
||
1375 | So, if you open the recycle bin again, the record will be marked |
||
1376 | as deleted in the INFO file (the first byte will be set to 0), |
||
1377 | because Windows searches for De0.txt and doesn't find it. |
||
1378 | |||
1379 | (This comment also applies to TRbInfoAItem.GetPhysicalFile) |
||
1380 | *) |
||
1381 | |||
75 | daniel-mar | 1382 | // e.g. C:\...\DC0.doc |
1383 | result := IncludeTrailingPathDelimiter(ExtractFilePath(IndexFile)) + |
||
76 | daniel-mar | 1384 | 'D' + SourceDrive (* SourceUnicode[1] *) + ID + ExtractFileExt(SourceUnicode); |
75 | daniel-mar | 1385 | end; |
1386 | |||
76 | daniel-mar | 1387 | constructor TRbInfoWItem.Create(fs: TStream; AIndexFile: string); |
75 | daniel-mar | 1388 | begin |
1389 | inherited Create; |
||
1390 | ReadFromStream(fs); |
||
1391 | FIndexFile := AIndexFile; |
||
1392 | end; |
||
1393 | |||
1394 | { TRbVistaItem } |
||
1395 | |||
1396 | procedure TRbVistaItem.ReadFromStream(stream: TStream); |
||
1397 | var |
||
1398 | r: TRbVistaRecord; |
||
1399 | begin |
||
1400 | stream.ReadBuffer(r, SizeOf(r)); |
||
1401 | |||
1402 | FSourceAnsi := AnsiString(r.sourceUnicode); // Invalid chars are automatically converted into '?' |
||
1403 | FSourceUnicode := r.sourceUnicode; |
||
1404 | FID := ''; // will be added manually (at the constructor) |
||
1405 | FSourceDrive := AnsiChar(r.sourceUnicode[1]); |
||
1406 | FDeletionTime := FileTimeToDateTime(r.deletionTime); |
||
1407 | FOriginalSize := r.originalSize; |
||
1408 | end; |
||
1409 | |||
1410 | function TRbVistaItem.DeleteFile: boolean; |
||
1411 | var |
||
1412 | r: string; |
||
1413 | begin |
||
1414 | r := GetPhysicalFile; |
||
1415 | if DirectoryExists(r) then |
||
1416 | result := DeleteDirectory(r) |
||
1417 | else |
||
1418 | result := SysUtils.DeleteFile(r); |
||
1419 | |||
1420 | SysUtils.DeleteFile(FIndexFile); |
||
1421 | end; |
||
1422 | |||
1423 | function TRbVistaItem.GetPhysicalFile: string; |
||
1424 | begin |
||
1425 | result := FIndexFile; |
||
1426 | result := StringReplace(Result, '$I', '$R', [rfIgnoreCase]); |
||
1427 | end; |
||
1428 | |||
1429 | constructor TRbVistaItem.Create(fs: TStream; AIndexFile, AID: string); |
||
1430 | begin |
||
1431 | inherited Create; |
||
1432 | ReadFromStream(fs); |
||
1433 | FIndexFile := AIndexFile; |
||
1434 | FID := AID; |
||
1435 | end; |
||
1436 | |||
1437 | { TRecycleBinManager } |
||
1438 | |||
1439 | class function TRecycleBinManager.EmptyOwnRecyclers(flags: cardinal): boolean; |
||
1440 | var |
||
1441 | PSHEmptyRecycleBin: TSHEmptyRecycleBin; |
||
1442 | LibHandle: THandle; |
||
1443 | begin |
||
1444 | // Source: http://www.dsdt.info/tipps/?id=176 |
||
1445 | result := true; |
||
1446 | LibHandle := LoadLibrary(shell32); |
||
1447 | try |
||
1448 | if LibHandle <> 0 then |
||
1449 | begin |
||
1450 | @PSHEmptyRecycleBin := GetProcAddress(LibHandle, C_SHEmptyRecycleBinA); |
||
1451 | if @PSHEmptyRecycleBin <> nil then |
||
1452 | begin |
||
1453 | PSHEmptyRecycleBin(hInstance, nil, flags); |
||
1454 | end |
||
1455 | else |
||
1456 | result := false; |
||
1457 | end |
||
1458 | else |
||
1459 | result := false; |
||
1460 | finally |
||
1461 | @PSHEmptyRecycleBin := nil; |
||
1462 | if LibHandle <> 0 then FreeLibrary(LibHandle); |
||
1463 | end; |
||
1464 | end; |
||
1465 | |||
1466 | class function TRecycleBinManager.EmptyOwnRecyclers(sound, progress, confirmation: boolean): boolean; |
||
1467 | const |
||
1468 | SHERB_NOCONFIRMATION = $00000001; |
||
1469 | SHERB_NOPROGRESSUI = $00000002; |
||
1470 | SHERB_NOSOUND = $00000004; |
||
1471 | var |
||
1472 | flags: cardinal; |
||
1473 | begin |
||
1474 | flags := 0; |
||
1475 | |||
1476 | if not progress then |
||
1477 | flags := flags or SHERB_NOPROGRESSUI; |
||
1478 | if not confirmation then |
||
1479 | flags := flags or SHERB_NOCONFIRMATION; |
||
1480 | if not sound then |
||
1481 | flags := flags or SHERB_NOSOUND; |
||
1482 | |||
1483 | result := EmptyOwnRecyclers(flags); |
||
1484 | end; |
||
1485 | |||
1486 | class function TRecycleBinManager.GetGlobalMaxPercentUsage: integer; |
||
1487 | var |
||
1488 | reg: TRegistry; |
||
1489 | purgeInfo: TRbWin95PurgeInfo; |
||
1490 | const |
||
1491 | RES_DEFAULT = 10; // Windows 95 - Standardwert |
||
1492 | begin |
||
1493 | result := RES_DEFAULT; |
||
1494 | |||
1495 | reg := TRegistry.Create; |
||
1496 | try |
||
1497 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1498 | |||
1499 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1500 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1501 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
1502 | begin |
||
1503 | if reg.ValueExists('Percent') then |
||
1504 | begin |
||
1505 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
1506 | |||
1507 | result := reg.ReadInteger('Percent'); |
||
1508 | end |
||
1509 | else if reg.ValueExists('PurgeInfo') then |
||
1510 | begin |
||
1511 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
1512 | |||
1513 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
||
1514 | result := purgeInfo.percentGlobal; |
||
1515 | end; |
||
1516 | |||
1517 | reg.CloseKey; |
||
1518 | end; |
||
1519 | finally |
||
1520 | reg.Free; |
||
1521 | end; |
||
1522 | end; |
||
1523 | |||
1524 | class function TRecycleBinManager.GetGlobalNukeOnDelete: boolean; |
||
1525 | var |
||
1526 | reg: TRegistry; |
||
1527 | purgeInfo: TRbWin95PurgeInfo; |
||
1528 | const |
||
1529 | RES_DEFAULT = false; // Windows 95 - Standardwert |
||
1530 | begin |
||
1531 | result := RES_DEFAULT; |
||
1532 | |||
1533 | reg := TRegistry.Create; |
||
1534 | try |
||
1535 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1536 | |||
1537 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1538 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1539 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
1540 | begin |
||
1541 | if reg.ValueExists('NukeOnDelete') then |
||
1542 | begin |
||
1543 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
1544 | |||
1545 | result := reg.ReadBool('NukeOnDelete'); |
||
1546 | end |
||
1547 | else if reg.ValueExists('PurgeInfo') then |
||
1548 | begin |
||
1549 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
1550 | |||
1551 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
||
1552 | result := (purgeInfo.NukeOnDeleteBits and $8000000) = $8000000; // bit 27 |
||
1553 | end; |
||
1554 | |||
1555 | reg.CloseKey; |
||
1556 | end; |
||
1557 | finally |
||
1558 | reg.Free; |
||
1559 | end; |
||
1560 | end; |
||
1561 | |||
76 | daniel-mar | 1562 | (* TODO: |
1563 | There are more registry values (found in WinXP): |
||
1564 | |||
1565 | BitBucket\<driveletter> |
||
1566 | VolumeSerialNumber |
||
1567 | IsUnicode |
||
1568 | |||
1569 | *) |
||
1570 | |||
75 | daniel-mar | 1571 | class function TRecycleBinManager.UsesGlobalSettings: boolean; |
1572 | var |
||
1573 | reg: TRegistry; |
||
1574 | purgeInfo: TRbWin95PurgeInfo; |
||
1575 | const |
||
1576 | RES_DEFAULT = true; // Windows 95 - Standardwert |
||
1577 | begin |
||
1578 | result := RES_DEFAULT; |
||
1579 | |||
1580 | reg := TRegistry.Create; |
||
1581 | try |
||
1582 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1583 | |||
1584 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1585 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1586 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
1587 | begin |
||
1588 | if reg.ValueExists('UseGlobalSettings') then |
||
1589 | begin |
||
1590 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
1591 | |||
1592 | result := reg.ReadBool('UseGlobalSettings'); |
||
1593 | end |
||
1594 | else if reg.ValueExists('PurgeInfo') then |
||
1595 | begin |
||
1596 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
1597 | |||
1598 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
||
1599 | result := purgeInfo.bGlobalSettings; |
||
1600 | end; |
||
1601 | |||
1602 | reg.CloseKey; |
||
1603 | end; |
||
1604 | finally |
||
1605 | reg.Free; |
||
1606 | end; |
||
1607 | end; |
||
1608 | |||
1609 | class procedure TRecycleBinManager.ListDrives(list: TObjectList{TRbDrive}); |
||
1610 | var |
||
1611 | drive: Char; |
||
1612 | begin |
||
1613 | for drive := 'A' to 'Z' do |
||
1614 | if RecycleBinPossible(drive) then |
||
1615 | list.Add(TRbDrive.Create(drive)); |
||
1616 | end; |
||
1617 | |||
1618 | class function TRecycleBinManager.OwnRecyclersEmpty: boolean; |
||
1619 | var |
||
1620 | drives: TObjectList; |
||
1621 | i: integer; |
||
1622 | begin |
||
1623 | result := true; |
||
1624 | |||
1625 | drives := TObjectList.Create(true); |
||
1626 | try |
||
1627 | ListDrives(drives); |
||
1628 | for i := 0 to drives.Count - 1 do |
||
1629 | begin |
||
1630 | result := result and TRbDrive(drives.Items[i]).IsEmpty; |
||
1631 | if not result then break; |
||
1632 | end; |
||
1633 | finally |
||
1634 | drives.Free; |
||
1635 | end; |
||
1636 | end; |
||
1637 | |||
1638 | class function TRecycleBinManager.OwnRecyclersNumItems: int64; |
||
1639 | var |
||
1640 | drives: TObjectList; |
||
1641 | i: integer; |
||
1642 | begin |
||
1643 | result := 0; |
||
1644 | |||
1645 | drives := TObjectList.Create(true); |
||
1646 | try |
||
1647 | ListDrives(drives); |
||
1648 | for i := 0 to drives.Count - 1 do |
||
1649 | begin |
||
1650 | result := result + TRbDrive(drives.Items[i]).GetNumItems; |
||
1651 | end; |
||
1652 | finally |
||
1653 | drives.Free; |
||
1654 | end; |
||
1655 | end; |
||
1656 | |||
1657 | class function TRecycleBinManager.OwnRecyclersSize: int64; |
||
1658 | var |
||
1659 | drives: TObjectList; |
||
1660 | i: integer; |
||
1661 | begin |
||
1662 | result := 0; |
||
1663 | |||
1664 | drives := TObjectList.Create(true); |
||
1665 | try |
||
1666 | ListDrives(drives); |
||
1667 | for i := 0 to drives.Count - 1 do |
||
1668 | begin |
||
1669 | result := result + TRbDrive(drives.Items[i]).GetSize; |
||
1670 | end; |
||
1671 | finally |
||
1672 | drives.Free; |
||
1673 | end; |
||
1674 | end; |
||
1675 | |||
1676 | class function TRecycleBinManager.RecycleBinPossible(Drive: Char): boolean; |
||
1677 | var |
||
1678 | typ: Integer; |
||
1679 | begin |
||
1680 | // Does the drive exist? |
||
1681 | // see http://www.delphipraxis.net/post2933.html |
||
1682 | result := GetLogicalDrives and (1 shl DriveLetterToDriveNumber(Drive)) <> 0; |
||
1683 | if not result then exit; |
||
1684 | |||
1685 | // Is it a fixed drive? (Only they can have recycle bins) |
||
1686 | // TODO: is that correct, or can also have other drive types have recyclers? |
||
1687 | typ := GetDriveType(PChar(Drive + ':\')); |
||
1688 | result := typ = DRIVE_FIXED; |
||
1689 | end; |
||
1690 | |||
1691 | class function TRecycleBinManager.RecyclerGetCurrentIconString: string; |
||
1692 | begin |
||
1693 | if OwnRecyclersEmpty then |
||
1694 | result := RecyclerGetEmptyIconString |
||
1695 | else |
||
1696 | result := RecyclerGetFullIconString; |
||
1697 | end; |
||
1698 | |||
1699 | class function TRecycleBinManager.RecyclerGetDefaultIconString: string; |
||
1700 | var |
||
1701 | reg: TRegistry; |
||
1702 | begin |
||
1703 | // Please note: The "default" icon is not always the icon of the |
||
1704 | // current recycle bin in its current state (full, empty) |
||
1705 | // At Windows 95b, the registry value actually did change every time the |
||
1706 | // recycle bin state did change, but at Windows 2000 I could not see any |
||
1707 | // update, even after reboot. So, the registry value is possible fixed as |
||
1708 | // default = empty on newer OS versions. |
||
1709 | |||
1710 | reg := TRegistry.Create; |
||
1711 | try |
||
1712 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1713 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)+'\DefaultIcon') then |
||
1714 | begin |
||
1715 | result := reg.ReadString(''); |
||
1716 | reg.CloseKey; |
||
1717 | end; |
||
1718 | finally |
||
1719 | reg.Free; |
||
1720 | end; |
||
1721 | end; |
||
1722 | |||
1723 | class function TRecycleBinManager.RecyclerGetEmptyIconString: string; |
||
1724 | var |
||
1725 | reg: TRegistry; |
||
1726 | begin |
||
1727 | reg := TRegistry.Create; |
||
1728 | try |
||
1729 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1730 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)+'\DefaultIcon') then |
||
1731 | begin |
||
1732 | result := reg.ReadString('Empty'); |
||
1733 | reg.CloseKey; |
||
1734 | end; |
||
1735 | finally |
||
1736 | reg.Free; |
||
1737 | end; |
||
1738 | end; |
||
1739 | |||
1740 | class function TRecycleBinManager.RecyclerGetFullIconString: string; |
||
1741 | var |
||
1742 | reg: TRegistry; |
||
1743 | begin |
||
1744 | reg := TRegistry.Create; |
||
1745 | try |
||
1746 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1747 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)+'\DefaultIcon') then |
||
1748 | begin |
||
1749 | result := reg.ReadString('Full'); |
||
1750 | reg.CloseKey; |
||
1751 | end; |
||
1752 | finally |
||
1753 | reg.Free; |
||
1754 | end; |
||
1755 | end; |
||
1756 | |||
1757 | class function TRecycleBinManager.RecyclerGetInfoTip: string; |
||
1758 | var |
||
1759 | reg: TRegistry; |
||
1760 | begin |
||
1761 | // Not available in some older versions of Windows |
||
1762 | |||
1763 | reg := TRegistry.Create; |
||
1764 | try |
||
1765 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1766 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)) then |
||
1767 | begin |
||
1768 | result := reg.ReadString('InfoTip'); |
||
1769 | result := DecodeReferenceString(result); |
||
1770 | |||
1771 | reg.CloseKey; |
||
1772 | end; |
||
1773 | finally |
||
1774 | reg.Free; |
||
1775 | end; |
||
1776 | end; |
||
1777 | |||
1778 | class function TRecycleBinManager.RecyclerGetIntroText: string; |
||
1779 | var |
||
1780 | reg: TRegistry; |
||
1781 | begin |
||
1782 | // Not available in some older versions of Windows |
||
1783 | |||
1784 | reg := TRegistry.Create; |
||
1785 | try |
||
1786 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1787 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)) then |
||
1788 | begin |
||
1789 | result := reg.ReadString('IntroText'); |
||
1790 | result := DecodeReferenceString(result); |
||
1791 | |||
1792 | reg.CloseKey; |
||
1793 | end; |
||
1794 | finally |
||
1795 | reg.Free; |
||
1796 | end; |
||
1797 | end; |
||
1798 | |||
1799 | class function TRecycleBinManager.RecyclerGetName: string; |
||
1800 | var |
||
1801 | reg: TRegistry; |
||
1802 | begin |
||
1803 | // Windows 95b: |
||
1804 | // Change of CLSID\{645FF040-5081-101B-9F08-00AA002F954E} will change the desktop name of the recycle bin. |
||
1805 | |||
1806 | // Windows 2000: If LocalizedString is available, the 3rd argument will be parsed |
||
1807 | // (if the third argument will removed, it will be read out from the DLL resource string automatically) |
||
1808 | |||
1809 | reg := TRegistry.Create; |
||
1810 | try |
||
1811 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1812 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)) then |
||
1813 | begin |
||
1814 | if reg.ValueExists('LocalizedString') then |
||
1815 | begin |
||
1816 | result := reg.ReadString('LocalizedString'); |
||
1817 | result := DecodeReferenceString(result); |
||
1818 | end |
||
1819 | else |
||
1820 | begin |
||
1821 | result := reg.ReadString(''); |
||
1822 | end; |
||
1823 | |||
1824 | reg.CloseKey; |
||
1825 | end; |
||
1826 | finally |
||
1827 | reg.Free; |
||
1828 | end; |
||
1829 | end; |
||
1830 | |||
1831 | class function TRecycleBinManager.RecyclerEmptyEventGetName: string; |
||
1832 | var |
||
1833 | reg: TRegistry; |
||
1834 | begin |
||
1835 | reg := TRegistry.Create; |
||
1836 | try |
||
1837 | reg.RootKey := HKEY_CURRENT_USER; |
||
1838 | if reg.OpenKeyReadOnly('AppEvents\EventLabels\EmptyRecycleBin') then |
||
1839 | begin |
||
1840 | result := reg.ReadString(''); |
||
1841 | reg.CloseKey; |
||
1842 | end; |
||
1843 | finally |
||
1844 | reg.Free; |
||
1845 | end; |
||
1846 | end; |
||
1847 | |||
1848 | class function TRecycleBinManager.RecyclerEmptyEventGetCurrentSound: string; |
||
1849 | begin |
||
1850 | result := RecyclerEmptyEventGetSound('.Current'); |
||
1851 | end; |
||
1852 | |||
1853 | class function TRecycleBinManager.RecyclerEmptyEventGetDefaultSound: string; |
||
1854 | begin |
||
1855 | result := RecyclerEmptyEventGetSound('.Default'); |
||
1856 | end; |
||
1857 | |||
1858 | class procedure TRecycleBinManager.RecyclerEmptyEventGetSoundCategories(AStringList: TStringList); |
||
1859 | var |
||
1860 | reg: TRegistry; |
||
1861 | begin |
||
1862 | reg := TRegistry.Create; |
||
1863 | try |
||
1864 | reg.RootKey := HKEY_CURRENT_USER; |
||
1865 | if reg.OpenKeyReadOnly('AppEvents\Schemes\Apps\Explorer\EmptyRecycleBin') then |
||
1866 | begin |
||
1867 | reg.GetKeyNames(AStringList); |
||
1868 | reg.CloseKey; |
||
1869 | end; |
||
1870 | finally |
||
1871 | reg.Free; |
||
1872 | end; |
||
1873 | end; |
||
1874 | |||
1875 | class function TRecycleBinManager.RecyclerEmptyEventGetSound(ACategory: string): string; |
||
1876 | var |
||
1877 | reg: TRegistry; |
||
1878 | resourcestring |
||
1879 | LNG_SND_EVENT_CAT_ERROR = 'The category "%s" is not available for the notification event "%s".'; |
||
1880 | begin |
||
1881 | // Outputs an filename or empty string for no sound defined. |
||
1882 | |||
1883 | reg := TRegistry.Create; |
||
1884 | try |
||
1885 | reg.RootKey := HKEY_CURRENT_USER; |
||
1886 | if reg.OpenKeyReadOnly('AppEvents\Schemes\Apps\Explorer\EmptyRecycleBin') then |
||
1887 | begin |
||
1888 | if reg.OpenKeyReadOnly(ACategory) then |
||
1889 | begin |
||
1890 | result := reg.ReadString(''); |
||
1891 | reg.CloseKey; |
||
1892 | end |
||
1893 | else |
||
1894 | raise EEventCategoryNotDefined.CreateFmt(LNG_SND_EVENT_CAT_ERROR, [ACategory, 'EmptyRecycleBin']); |
||
1895 | reg.CloseKey; |
||
1896 | end; |
||
1897 | finally |
||
1898 | reg.Free; |
||
1899 | end; |
||
1900 | end; |
||
1901 | |||
1902 | class function TRecycleBinManager.RecyclerQueryFunctionAvailable: boolean; |
||
1903 | var |
||
1904 | RBHandle: THandle; |
||
1905 | SHQueryRecycleBin: TSHQueryRecycleBin; |
||
1906 | begin |
||
1907 | // Windows 95 without Internet Explorer 4 has no SHQueryRecycleBinA. |
||
1908 | RBHandle := LoadLibrary(shell32); |
||
1909 | try |
||
1910 | if RBHandle <> 0 then |
||
1911 | begin |
||
1912 | SHQueryRecycleBin := GetProcAddress(RBHandle, C_SHQueryRecycleBin); |
||
1913 | if not Assigned(@SHQueryRecycleBin) then |
||
1914 | begin |
||
1915 | FreeLibrary(RBHandle); |
||
1916 | RBHandle := 0; |
||
1917 | end; |
||
1918 | end; |
||
1919 | |||
1920 | result := RBHandle <> 0; |
||
1921 | finally |
||
1922 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
||
1923 | end; |
||
1924 | end; |
||
1925 | |||
1926 | class function TRecycleBinManager.RecyclerAddFileOrFolder(FileOrFolder: string; confirmation: boolean=false): boolean; |
||
1927 | var |
||
1928 | Operation: TSHFileOpStruct; |
||
1929 | begin |
||
1930 | // Template: http://www.dsdt.info/tipps/?id=116 |
||
1931 | with Operation do |
||
1932 | begin |
||
1933 | Wnd := hInstance; // OK? |
||
1934 | wFunc := FO_DELETE; |
||
1935 | pFrom := PChar(FileOrFolder + #0); |
||
1936 | pTo := nil; |
||
1937 | fFlags := FOF_ALLOWUNDO; |
||
1938 | if not confirmation then fFlags := fFlags or FOF_NOCONFIRMATION; |
||
1939 | end; |
||
1940 | Result := SHFileOperation(Operation) = 0; |
||
1941 | end; |
||
1942 | |||
1943 | class function TRecycleBinManager.RecyclerGroupPolicyNoRecycleFiles: GPOLICYBOOL; |
||
1944 | var |
||
1945 | reg: TRegistry; |
||
1946 | begin |
||
1947 | result := gpUndefined; |
||
1948 | |||
1949 | reg := TRegistry.Create; |
||
1950 | try |
||
1951 | // If a value is set in HKEY_LOCAL_MACHINE, it will be prefered, |
||
1952 | // even if gpedit.msc shows "Not configured"! |
||
1953 | {$IFDEF GroupPolicyAcceptHKLMTrick} |
||
1954 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1955 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
1956 | begin |
||
1957 | if reg.ValueExists('NoRecycleFiles') then |
||
1958 | begin |
||
1959 | if reg.ReadBool('NoRecycleFiles') then |
||
1960 | result := gpEnabled |
||
1961 | else |
||
1962 | result := gpDisabled; |
||
1963 | Exit; |
||
1964 | end; |
||
1965 | reg.CloseKey; |
||
1966 | end; |
||
1967 | {$ENDIF} |
||
1968 | |||
1969 | reg.RootKey := HKEY_CURRENT_USER; |
||
1970 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
1971 | begin |
||
1972 | if reg.ValueExists('NoRecycleFiles') then |
||
1973 | begin |
||
1974 | if reg.ReadBool('NoRecycleFiles') then |
||
1975 | result := gpEnabled |
||
1976 | else |
||
1977 | result := gpDisabled; |
||
1978 | end; |
||
1979 | reg.CloseKey; |
||
1980 | end; |
||
1981 | finally |
||
1982 | reg.Free; |
||
1983 | end; |
||
1984 | end; |
||
1985 | |||
1986 | class function TRecycleBinManager.RecyclerGroupPolicyConfirmFileDelete: GPOLICYBOOL; |
||
1987 | var |
||
1988 | reg: TRegistry; |
||
1989 | begin |
||
1990 | result := gpUndefined; |
||
1991 | reg := TRegistry.Create; |
||
1992 | try |
||
1993 | // If a value is set in HKEY_LOCAL_MACHINE, it will be prefered, |
||
1994 | // even if gpedit.msc shows "Not configured"! |
||
1995 | {$IFDEF GroupPolicyAcceptHKLMTrick} |
||
1996 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1997 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
1998 | begin |
||
1999 | if reg.ValueExists('ConfirmFileDelete') then |
||
2000 | begin |
||
2001 | if reg.ReadBool('ConfirmFileDelete') then |
||
2002 | result := gpEnabled |
||
2003 | else |
||
2004 | result := gpDisabled; |
||
2005 | Exit; |
||
2006 | end; |
||
2007 | reg.CloseKey; |
||
2008 | end; |
||
2009 | {$ENDIF} |
||
2010 | |||
2011 | reg.RootKey := HKEY_CURRENT_USER; |
||
2012 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2013 | begin |
||
2014 | if reg.ValueExists('ConfirmFileDelete') then |
||
2015 | begin |
||
2016 | if reg.ReadBool('ConfirmFileDelete') then |
||
2017 | result := gpEnabled |
||
2018 | else |
||
2019 | result := gpDisabled; |
||
2020 | end; |
||
2021 | reg.CloseKey; |
||
2022 | end; |
||
2023 | finally |
||
2024 | reg.Free; |
||
2025 | end; |
||
2026 | end; |
||
2027 | |||
2028 | class function TRecycleBinManager.RecyclerGroupPolicyRecycleBinSize: integer; |
||
2029 | var |
||
2030 | reg: TRegistry; |
||
2031 | begin |
||
2032 | result := -1; |
||
2033 | reg := TRegistry.Create; |
||
2034 | try |
||
2035 | // If a value is set in HKEY_LOCAL_MACHINE, it will be prefered, |
||
2036 | // even if gpedit.msc shows "Not configured"! |
||
2037 | {$IFDEF GroupPolicyAcceptHKLMTrick} |
||
2038 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
2039 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2040 | begin |
||
2041 | if reg.ValueExists('RecycleBinSize') then |
||
2042 | begin |
||
2043 | result := reg.ReadInteger('RecycleBinSize'); |
||
2044 | Exit; |
||
2045 | end; |
||
2046 | reg.CloseKey; |
||
2047 | end; |
||
2048 | {$ENDIF} |
||
2049 | |||
2050 | reg.RootKey := HKEY_CURRENT_USER; |
||
2051 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2052 | begin |
||
2053 | if reg.ValueExists('RecycleBinSize') then |
||
2054 | begin |
||
2055 | result := reg.ReadInteger('RecycleBinSize'); |
||
2056 | end; |
||
2057 | reg.CloseKey; |
||
2058 | end; |
||
2059 | finally |
||
2060 | reg.Free; |
||
2061 | end; |
||
2062 | end; |
||
2063 | |||
2064 | class function TRecycleBinManager.RecyclerConfirmationDialogEnabled: boolean; |
||
2065 | var |
||
2066 | gp: GPOLICYBOOL; |
||
2067 | begin |
||
2068 | gp := RecyclerGroupPolicyConfirmFileDelete; |
||
2069 | if gp <> gpUndefined then |
||
2070 | begin |
||
2071 | result := gp = gpEnabled; |
||
2072 | end |
||
2073 | else |
||
2074 | begin |
||
2075 | result := RecyclerShellStateConfirmationDialogEnabled; |
||
2076 | end; |
||
2077 | end; |
||
2078 | |||
2079 | class function TRecycleBinManager.RecyclerShellStateConfirmationDialogEnabled: boolean; |
||
2080 | var |
||
2081 | lpss: SHELLSTATE; |
||
2082 | bNoConfirmRecycle: boolean; |
||
2083 | |||
2084 | PSHGetSettings: TSHGetSettings; |
||
2085 | RBHandle: THandle; |
||
2086 | |||
2087 | reg: TRegistry; |
||
2088 | rbuf: array[0..255] of byte; |
||
2089 | begin |
||
2090 | PSHGetSettings := nil; |
||
2091 | result := false; // Avoid warning message |
||
2092 | |||
2093 | RBHandle := LoadLibrary(shell32); |
||
2094 | try |
||
2095 | if RBHandle <> 0 then |
||
2096 | begin |
||
2097 | PSHGetSettings := GetProcAddress(RBHandle, C_SHGetSettings); |
||
2098 | if not Assigned(@PSHGetSettings) then |
||
2099 | begin |
||
2100 | FreeLibrary(RBHandle); |
||
2101 | RBHandle := 0; |
||
2102 | end; |
||
2103 | end; |
||
2104 | |||
2105 | if (RBHandle <> 0) and Assigned(PSHGetSettings) then |
||
2106 | begin |
||
2107 | ZeroMemory(@lpss, SizeOf(lpss)); |
||
2108 | PSHGetSettings(lpss, SSF_NOCONFIRMRECYCLE); |
||
2109 | bNoConfirmRecycle := (lpss.Flags1 and 4) = 4; // fNoConfirmRecycle |
||
2110 | |||
2111 | result := not bNoConfirmRecycle; |
||
2112 | end |
||
2113 | else |
||
2114 | begin |
||
2115 | reg := TRegistry.Create; |
||
2116 | try |
||
2117 | // API function call failed. Probably because Windows is too old. |
||
2118 | // Try to read out from registry. |
||
2119 | // The 3rd bit of the 5th byte of "ShellState" is the value |
||
2120 | // of "fNoConfirmRecycle". |
||
2121 | |||
2122 | reg.RootKey := HKEY_CURRENT_USER; |
||
2123 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Explorer') then |
||
2124 | begin |
||
2125 | ZeroMemory(@rbuf, SizeOf(rbuf)); |
||
2126 | reg.ReadBinaryData('ShellState', rbuf, SizeOf(rbuf)); |
||
2127 | |||
2128 | // Lese 3tes Bit vom 5ten Byte |
||
2129 | bNoConfirmRecycle := ((rbuf[4] and 4) = 4); |
||
2130 | result := not bNoConfirmRecycle; |
||
2131 | |||
2132 | reg.CloseKey; |
||
2133 | end |
||
2134 | else |
||
2135 | begin |
||
2136 | raise EAPICallError.CreateFmt(LNG_API_CALL_ERROR, [Format(LNG_NOT_CALLABLE, [C_SHGetSettings])]); |
||
2137 | end; |
||
2138 | finally |
||
2139 | reg.Free; |
||
2140 | end; |
||
2141 | end; |
||
2142 | finally |
||
2143 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
||
2144 | end; |
||
2145 | end; |
||
2146 | |||
2147 | class procedure TRecycleBinManager.RecyclerConfirmationDialogSetEnabled(NewSetting: boolean); |
||
2148 | var |
||
2149 | lpss: SHELLSTATE; |
||
2150 | |||
2151 | PSHGetSetSettings: TSHGetSetSettings; |
||
2152 | RBHandle: THandle; |
||
2153 | |||
2154 | reg: TRegistry; |
||
2155 | rbuf: array[0..255] of byte; |
||
2156 | |||
2157 | dwResult: DWORD; |
||
2158 | begin |
||
2159 | PSHGetSetSettings := nil; |
||
2160 | |||
2161 | RBHandle := LoadLibrary(shell32); |
||
2162 | try |
||
2163 | if RBHandle <> 0 then |
||
2164 | begin |
||
2165 | PSHGetSetSettings := GetProcAddress(RBHandle, C_SHGetSetSettings); |
||
2166 | if not Assigned(@PSHGetSetSettings) then |
||
2167 | begin |
||
2168 | FreeLibrary(RBHandle); |
||
2169 | RBHandle := 0; |
||
2170 | end; |
||
2171 | end; |
||
2172 | |||
2173 | if (RBHandle <> 0) and Assigned(PSHGetSetSettings) then |
||
2174 | begin |
||
2175 | ZeroMemory(@lpss, SizeOf(lpss)); |
||
2176 | |||
2177 | PSHGetSetSettings(lpss, SSF_NOCONFIRMRECYCLE, false); // Get |
||
2178 | |||
2179 | // Set 3rd bit equal to NewSetting |
||
2180 | if NewSetting then |
||
2181 | lpss.Flags1 := lpss.Flags1 or $00000004 |
||
2182 | else |
||
2183 | lpss.Flags1 := lpss.Flags1 and $FFFFFFFB; |
||
2184 | |||
2185 | PSHGetSetSettings(lpss, SSF_NOCONFIRMRECYCLE, true); // Set |
||
2186 | |||
2187 | SendMessageTimeout ( |
||
2188 | HWND_BROADCAST, WM_SETTINGCHANGE, |
||
2189 | 0, lParam (pChar ('ShellState')), |
||
2190 | SMTO_ABORTIFHUNG, 5000, dwResult |
||
2191 | ); |
||
2192 | end |
||
2193 | else |
||
2194 | begin |
||
2195 | reg := TRegistry.Create; |
||
2196 | try |
||
2197 | // API function call failed. Probably because Windows is too old. |
||
2198 | // Try to read out from registry. |
||
2199 | // The 3rd bit of the 5th byte of "ShellState" is the value |
||
2200 | // of "fNoConfirmRecycle". |
||
2201 | |||
2202 | reg.RootKey := HKEY_CURRENT_USER; |
||
2203 | if reg.OpenKey('Software\Microsoft\Windows\CurrentVersion\Explorer', false) then |
||
2204 | begin |
||
2205 | ZeroMemory(@rbuf, SizeOf(rbuf)); |
||
2206 | |||
2207 | reg.ReadBinaryData('ShellState', rbuf, SizeOf(rbuf)); // Get |
||
2208 | |||
2209 | // Set 3rd bit equal to NewSetting |
||
2210 | if NewSetting then |
||
2211 | rbuf[4] := rbuf[4] or $04 |
||
2212 | else |
||
2213 | rbuf[4] := rbuf[4] and $FB; |
||
2214 | |||
2215 | reg.WriteBinaryData('ShellState', rbuf, SizeOf(rbuf)); // Set |
||
2216 | |||
2217 | SendMessageTimeout ( |
||
2218 | HWND_BROADCAST, WM_SETTINGCHANGE, |
||
2219 | 0, lParam (pChar ('ShellState')), |
||
2220 | SMTO_ABORTIFHUNG, 5000, dwResult |
||
2221 | ); |
||
2222 | |||
2223 | reg.CloseKey; |
||
2224 | end |
||
2225 | else |
||
2226 | begin |
||
2227 | raise EAPICallError.CreateFmt(LNG_API_CALL_ERROR, [Format(LNG_NOT_CALLABLE, [C_SHGetSetSettings])]); |
||
2228 | end; |
||
2229 | finally |
||
2230 | reg.Free; |
||
2231 | end; |
||
2232 | end; |
||
2233 | finally |
||
2234 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
||
2235 | end; |
||
2236 | end; |
||
2237 | |||
2238 | { TRbRecycleBinItem } |
||
2239 | |||
2240 | function TRbRecycleBinItem.GetSource: string; |
||
2241 | begin |
||
2242 | {$IFDEF UNICODE} |
||
2243 | result := SourceUnicode; |
||
2244 | {$ELSE} |
||
2245 | result := SourceAnsi; |
||
2246 | {$ENDIF} |
||
2247 | end; |
||
2248 | |||
2249 | end. |