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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 | //////////////////////////////////////////////////////////////////////////////////// |
82 | daniel-mar | 8 | // Revision: 30 JUN 2022 // |
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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82 | daniel-mar | 21 | // Windows 10 (version 1 and version 2 format) // |
22 | // Windows 11 // |
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75 | daniel-mar | 23 | //////////////////////////////////////////////////////////////////////////////////// |
24 | |||
25 | // Delphi 7 Compatibility: (TODO: compiler switches) |
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26 | // - Remove "static" |
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27 | // - Remove "strict" |
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28 | // - Remove "$REGION" |
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29 | |||
30 | // TODO: ReadBuffer überall try-except |
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31 | // TODO: Always check EOF before reading anything? |
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76 | daniel-mar | 32 | // TODO: Don't crash when timestamp is invalid. Do something else instead. |
75 | daniel-mar | 33 | // TODO: Is it possible to identify a Vista-file that is not named $Ixxxxxx.ext? |
34 | // TODO: RecyclerGetInfofiles() check additionally for removable device? |
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35 | // RecyclerIsValid() is false. |
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36 | // TODO: Make it possible to empty the recycle bin of one specific drive! |
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37 | // TODO: Unknown! Do you know the answer? |
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38 | // - How does Windows 9x/NT manage the daylight saving time (if it does)? |
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39 | // - How does Windows Vista+ react to a RECYCLER\ folder on a NTFS device? |
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40 | // - How does Windows Vista+ react to a RECYCLED\ folder on a FAT device? ==> Win7: is ignored! |
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41 | // - How does Windows XP react to RECYCLED\ folder on a FAT device? |
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42 | // TODO: Translate all comments from German to English |
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78 | daniel-mar | 43 | // TODO: Do we need this (maybe not all drives have A: till Z:?) http://stackoverflow.com/questions/17110543/how-to-retrieve-the-disk-signature-of-all-the-disks-in-windows-using-delphi-7 |
44 | // TODO: Add a lot of setters for system config stuff |
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75 | daniel-mar | 45 | |
46 | // If enabled, the deletion timestamps will not be converted by the WinAPI. |
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47 | {.$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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78 | daniel-mar | 55 | Windows, SysUtils, Classes, ContNrs, ShellAPI, Registry, Messages, Math; |
75 | daniel-mar | 56 | |
57 | const |
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82 | daniel-mar | 58 | RECBINUNIT_VERSION = '2022-06-30'; |
75 | daniel-mar | 59 | |
60 | RECYCLER_CLSID: TGUID = '{645FF040-5081-101B-9F08-00AA002F954E}'; |
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78 | daniel-mar | 61 | NULL_GUID: TGUID = '{00000000-0000-0000-0000-000000000000}'; |
75 | daniel-mar | 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 | |||
78 | daniel-mar | 166 | function OldCapacityPercent(var res: integer): boolean; // in % (0-100) |
167 | function NewCapacityAbsolute(var res: integer): boolean; // in MB |
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168 | |||
169 | function DiskSize: integer; // in MB |
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170 | function DriveNumber: integer; |
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75 | daniel-mar | 171 | strict protected |
172 | function IsFAT: boolean; |
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173 | procedure CheckDriveExisting; |
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78 | daniel-mar | 174 | |
175 | // will return NULL_GUID in case of an error or if it is not supported |
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176 | function GetVolumeGUID: TGUID; |
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177 | function GetVolumeGUIDAvailable: boolean; |
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178 | |||
179 | // TODO: get drive serial |
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75 | daniel-mar | 180 | public |
181 | constructor Create(ADriveLetter: Char); |
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182 | |||
183 | // Wenn UserSID='', dann werden alle Recycler gefunden |
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184 | procedure ListRecycleBins(list: TObjectList{TRbRecycleBin}; UserSID: string=''); |
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185 | |||
186 | property DriveLetter: Char read FDriveLetter; |
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187 | property VolumeGUID: TGUID read GetVolumeGUID; |
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77 | daniel-mar | 188 | property VolumeGUIDAvailable: boolean read GetVolumeGUIDAvailable; |
75 | daniel-mar | 189 | function GetAPIInfo: TSHQueryRBInfo; |
190 | function GetSize: int64; |
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191 | function GetNumItems: int64; |
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192 | function IsEmpty: boolean; |
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193 | |||
78 | daniel-mar | 194 | function GetMaxPercentUsage: Extended; // 0..1 |
195 | function GetMaxAbsoluteUsage: integer; // in MB |
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75 | daniel-mar | 196 | function GetNukeOnDelete: boolean; |
197 | end; |
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198 | |||
199 | GPOLICYBOOL = (gpUndefined, gpEnabled, gpDisabled); |
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200 | |||
201 | TRecycleBinManager = class(TObject) |
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202 | public |
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203 | class procedure ListDrives(list: TObjectList{TRbDrive}); static; |
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204 | class function RecycleBinPossible(Drive: Char): boolean; static; |
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205 | |||
206 | class function OwnRecyclersSize: int64; static; |
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207 | class function OwnRecyclersNumItems: int64; static; |
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208 | class function OwnRecyclersEmpty: boolean; static; |
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209 | |||
210 | class function EmptyOwnRecyclers(flags: cardinal): boolean; overload; static; |
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211 | class function EmptyOwnRecyclers(sound, progress, confirmation: boolean): boolean; overload; static; |
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212 | |||
213 | class function RecyclerGetCurrentIconString: string; static; |
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214 | class function RecyclerGetDefaultIconString: string; static; |
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215 | class function RecyclerGetEmptyIconString: string; static; |
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216 | class function RecyclerGetFullIconString: string; static; |
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217 | |||
218 | class function GetGlobalMaxPercentUsage: integer; static; // TODO: In Win Vista: absolute and not relative sizes |
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219 | class function GetGlobalNukeOnDelete: boolean; static; |
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220 | class function UsesGlobalSettings: boolean; static; |
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221 | |||
222 | class function RecyclerGetName: string; static; |
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223 | class function RecyclerGetInfoTip: string; static; |
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224 | class function RecyclerGetIntroText: string; static; |
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225 | |||
226 | class function RecyclerEmptyEventGetCurrentSound: string; static; |
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227 | class function RecyclerEmptyEventGetDefaultSound: string; static; |
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228 | class function RecyclerEmptyEventGetName: string; static; |
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229 | class function RecyclerEmptyEventGetSound(ACategory: string): string; static; |
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230 | class procedure RecyclerEmptyEventGetSoundCategories(AStringList: TStringList); static; |
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231 | |||
232 | // TODO: In future also detect for other users |
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233 | // TODO: Also make a setter (incl. Message to Windows Explorer?) |
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234 | class function RecyclerGroupPolicyConfirmFileDelete: GPOLICYBOOL; static; |
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235 | class function RecyclerGroupPolicyNoRecycleFiles: GPOLICYBOOL; static; |
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236 | class function RecyclerGroupPolicyRecycleBinSize: integer; static; |
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237 | |||
238 | class function RecyclerConfirmationDialogEnabled: boolean; static; |
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239 | class procedure RecyclerConfirmationDialogSetEnabled(NewSetting: boolean); static; |
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240 | class function RecyclerShellStateConfirmationDialogEnabled: boolean; static; |
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241 | |||
242 | // Diese Funktion ist false, wenn sie z.B. unter Windows 95 ohne Internet Explorer |
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243 | // 4.0 Shell Extension ausgeführt wird. Wenn abwärtskompatibler Code geschrieben |
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244 | // werden soll, sollte RecyclerQueryFunctionAvailable() verwendet werden, da |
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245 | // unter Windows 95 folgende Funktionalitäten NICHT vorhanden sind: |
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246 | // - RecyclerIsEmpty |
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247 | // - RecyclerGetNumItems |
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248 | // - RecyclerGetSize |
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249 | // - RecyclerGetAPIInfo |
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250 | class function RecyclerQueryFunctionAvailable: boolean; static; |
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251 | |||
252 | class function RecyclerAddFileOrFolder(FileOrFolder: string; confirmation: boolean=false): boolean; static; |
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253 | end; |
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254 | |||
255 | function GPBoolToString(value: GPOLICYBOOL): string; |
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256 | |||
257 | implementation |
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258 | |||
259 | uses |
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260 | RecBinUnitLowLvl; |
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261 | |||
262 | {$REGION 'WinAPI/RTL declarations'} |
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263 | (* |
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264 | const |
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265 | {$IFDEF MSWINDOWS} |
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266 | shell32 = 'shell32.dll'; |
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267 | advapi32 = 'advapi32.dll'; |
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268 | kernel32 = 'kernel32.dll'; |
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269 | {$ENDIF} |
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270 | {$IFDEF LINUX} |
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271 | shell32 = 'libshell32.borland.so'; |
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272 | advapi32 = 'libwine.borland.so'; |
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273 | kernel32 = 'libwine.borland.so'; |
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274 | {$ENDIF} |
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275 | *) |
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276 | |||
277 | type |
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278 | SHELLSTATE = record |
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279 | Flags1: DWORD; |
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280 | (* |
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281 | BOOL fShowAllObjects : 1; |
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282 | BOOL fShowExtensions : 1; |
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283 | BOOL fNoConfirmRecycle : 1; |
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284 | |||
285 | BOOL fShowSysFiles : 1; |
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286 | BOOL fShowCompColor : 1; |
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287 | BOOL fDoubleClickInWebView : 1; |
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288 | BOOL fDesktopHTML : 1; |
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289 | BOOL fWin95Classic : 1; |
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290 | BOOL fDontPrettyPath : 1; |
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291 | BOOL fShowAttribCol : 1; // No longer used, dead bit |
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292 | BOOL fMapNetDrvBtn : 1; |
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293 | BOOL fShowInfoTip : 1; |
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294 | BOOL fHideIcons : 1; |
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295 | BOOL fWebView : 1; |
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296 | BOOL fFilter : 1; |
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297 | BOOL fShowSuperHidden : 1; |
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298 | BOOL fNoNetCrawling : 1; |
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299 | *) |
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300 | dwWin95Unused: DWORD; // Win95 only - no longer supported pszHiddenFileExts |
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301 | uWin95Unused: UINT; // Win95 only - no longer supported cbHiddenFileExts |
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302 | |||
303 | // Note: Not a typo! This is a persisted structure so we cannot use LPARAM |
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304 | lParamSort: Integer; |
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305 | iSortDirection: Integer; |
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306 | |||
307 | version: UINT; |
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308 | |||
309 | // new for win2k. need notUsed var to calc the right size of ie4 struct |
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310 | // FIELD_OFFSET does not work on bit fields |
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311 | uNotUsed: UINT; // feel free to rename and use |
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312 | Flags2: DWORD; |
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313 | (* |
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314 | BOOL fSepProcess: 1; |
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315 | // new for Whistler. |
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316 | BOOL fStartPanelOn: 1; //Indicates if the Whistler StartPanel mode is ON or OFF. |
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317 | BOOL fShowStartPage: 1; //Indicates if the Whistler StartPage on desktop is ON or OFF. |
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318 | UINT fSpareFlags : 13; |
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319 | *) |
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320 | end; |
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321 | LPSHELLSTATE = ^SHELLSTATE; |
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322 | |||
323 | const |
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324 | // Masks for the SHELLSTATE |
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325 | SSF_SHOWALLOBJECTS = $00000001; |
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326 | SSF_SHOWEXTENSIONS = $00000002; |
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327 | SSF_HIDDENFILEEXTS = $00000004; |
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328 | SSF_SERVERADMINUI = $00000004; |
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329 | SSF_SHOWCOMPCOLOR = $00000008; |
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330 | SSF_SORTCOLUMNS = $00000010; |
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331 | SSF_SHOWSYSFILES = $00000020; |
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332 | SSF_DOUBLECLICKINWEBVIEW = $00000080; |
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333 | SSF_SHOWATTRIBCOL = $00000100; |
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334 | SSF_DESKTOPHTML = $00000200; |
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335 | SSF_WIN95CLASSIC = $00000400; |
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336 | SSF_DONTPRETTYPATH = $00000800; |
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337 | SSF_SHOWINFOTIP = $00002000; |
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338 | SSF_MAPNETDRVBUTTON = $00001000; |
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339 | SSF_NOCONFIRMRECYCLE = $00008000; |
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340 | SSF_HIDEICONS = $00004000; |
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341 | SSF_FILTER = $00010000; |
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342 | SSF_WEBVIEW = $00020000; |
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343 | SSF_SHOWSUPERHIDDEN = $00040000; |
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344 | SSF_SEPPROCESS = $00080000; |
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345 | SSF_NONETCRAWLING = $00100000; |
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346 | SSF_STARTPANELON = $00200000; |
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347 | SSF_SHOWSTARTPAGE = $00400000; |
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348 | {$ENDREGION} |
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349 | |||
350 | resourcestring |
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351 | LNG_API_CALL_ERROR = 'Error while calling the API. Additional information: "%s".'; |
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352 | LNG_NOT_CALLABLE = '%s not callable'; |
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353 | LNG_ERROR_CODE = '%s (Arguments: %s) returns error code %s'; |
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354 | LNG_FILE_NOT_FOUND = 'File not found: %s'; |
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76 | daniel-mar | 355 | LNG_INVALID_INFO_FORMAT = 'Unexpected record size: %s'; |
75 | daniel-mar | 356 | LNG_DRIVE_NOT_EXISTING = 'Drive %s does not exist.'; |
357 | |||
358 | const |
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359 | C_SHQueryRecycleBin = 'SHQueryRecycleBinA'; |
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360 | C_GetVolumeNameForVolumeMountPoint = 'GetVolumeNameForVolumeMountPointA'; |
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361 | C_SHEmptyRecycleBinA = 'SHEmptyRecycleBinA'; |
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362 | C_SHGetSettings = 'SHGetSettings'; |
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363 | C_SHGetSetSettings = 'SHGetSetSettings'; |
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364 | |||
365 | type |
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366 | TSHQueryRecycleBin = function(pszRootPath: LPCTSTR; var pSHQueryRBInfo: TSHQueryRBInfo): HRESULT; stdcall; |
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367 | TGetVolumeNameForVolumeMountPoint = function(lpszVolumeMountPoint: LPCTSTR; lpszVolumeName: LPTSTR; cchBufferLength: DWORD): BOOL; stdcall; |
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368 | TSHEmptyRecycleBin = function(Wnd: HWND; pszRootPath: PChar; dwFlags: DWORD): HRESULT; stdcall; |
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82 | daniel-mar | 369 | TSHGetSettings = procedure(var lpss: SHELLSTATE; dwMask: DWORD); stdcall; |
370 | TSHGetSetSettings = procedure(var lpss: SHELLSTATE; dwMask: DWORD; bSet: BOOL); stdcall; |
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75 | daniel-mar | 371 | |
372 | function GetDriveGUID(driveLetter: Char; var guid: TGUID): DWORD; |
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373 | var |
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374 | Buffer: array[0..50] of AnsiChar; |
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375 | x: string; |
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376 | PGetVolumeNameForVolumeMountPoint: TGetVolumeNameForVolumeMountPoint; |
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377 | RBHandle: THandle; |
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378 | begin |
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379 | RBHandle := LoadLibrary(kernel32); |
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380 | try |
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381 | if RBHandle <> 0 then |
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382 | begin |
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383 | PGetVolumeNameForVolumeMountPoint := GetProcAddress(RBHandle, C_GetVolumeNameForVolumeMountPoint); |
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384 | if not Assigned(@PGetVolumeNameForVolumeMountPoint) then |
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385 | begin |
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386 | result := GetLastError; |
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387 | FreeLibrary(RBHandle); |
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388 | RBHandle := 0; |
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389 | end |
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390 | else |
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391 | begin |
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392 | if PGetVolumeNameForVolumeMountPoint(PAnsiChar(driveLetter+':\'), Buffer, SizeOf(Buffer)) then |
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393 | begin |
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394 | x := buffer; |
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395 | x := copy(x, 11, 38); |
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396 | guid := StringToGUID(x); |
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397 | result := ERROR_SUCCESS; |
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398 | end |
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399 | else |
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400 | result := GetLastError; |
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401 | end; |
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402 | end |
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403 | else result := GetLastError; |
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404 | finally |
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405 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
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406 | end; |
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407 | end; |
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408 | |||
409 | function FileTimeToDateTime(FileTime: FILETIME): TDateTime; |
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410 | {$IFDEF FILETIME_DELPHI_CODE} |
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411 | var |
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412 | SystemTime: TSystemTime; |
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413 | nowUTC: TDateTime; |
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414 | gmtDifference: int64; |
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415 | begin |
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416 | GetSystemTime(SystemTime); |
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417 | with SystemTime do |
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418 | begin |
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419 | // http://www.delphipraxis.net/post340194.html#34019 |
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420 | nowUTC := EncodeDate(wYear, wMonth, wDay) + |
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421 | EncodeTime(wHour, wMinute, wSecond, wMilliseconds); |
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422 | end; |
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423 | |||
424 | gmtDifference := datetimetounix(nowUTC) - datetimetounix(Now); |
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425 | |||
426 | // http://www.e-fense.com/helix/Docs/Recycler_Bin_Record_Reconstruction.pdf states: |
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427 | // UnixTime = 0.0000001 * NTTime + 11644473600 |
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428 | // This is wrong! The correct formula is: |
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429 | // UnixTime = 0.0000001 * NTTime - 11644473600 + c * 3600 |
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430 | // c = GMT-Difference (MEZ = 1) inclusive daylight saving time (+3600 seconds) |
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431 | result := unixtodatetime(round(0.0000001 * int64(FileTime)) - 11644473600 - gmtDifference); |
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432 | {$ELSE} |
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433 | var |
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434 | LocalTime: TFileTime; |
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435 | DOSTime: Integer; |
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436 | begin |
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437 | FileTimeToLocalFileTime(FileTime, LocalTime); |
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438 | FileTimeToDosDateTime(LocalTime, LongRec(DOSTime).Hi, LongRec(DOSTime).Lo); |
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439 | Result := FileDateToDateTime(DOSTime); |
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440 | {$ENDIF} |
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441 | end; |
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442 | |||
443 | function DeleteDirectory(const Name: string): boolean; |
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444 | var |
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445 | F: TSearchRec; |
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446 | begin |
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447 | result := true; |
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448 | if FindFirst(IncludeTrailingPathDelimiter(Name) + '*', faAnyFile, F) = 0 then |
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449 | begin |
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450 | try |
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451 | repeat |
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452 | if F.Attr and faDirectory <> 0 then |
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453 | begin |
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454 | if (F.Name <> '.') and (F.Name <> '..') then |
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455 | begin |
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456 | result := result and DeleteDirectory(IncludeTrailingPathDelimiter(Name) + F.Name); |
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457 | end; |
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458 | end |
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459 | else |
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460 | begin |
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461 | if not DeleteFile(IncludeTrailingPathDelimiter(Name) + F.Name) then result := false; |
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462 | end; |
||
463 | until FindNext(F) <> 0; |
||
464 | finally |
||
465 | FindClose(F); |
||
466 | end; |
||
467 | if not RemoveDir(Name) then result := false; |
||
468 | end; |
||
469 | end; |
||
470 | |||
471 | function DriveLetterToDriveNumber(driveLetter: Char): integer; |
||
472 | var |
||
473 | tmp: string; |
||
474 | begin |
||
475 | tmp := LowerCase(driveLetter); |
||
476 | result := Ord(tmp[1])-Ord('a'); |
||
477 | end; |
||
478 | |||
479 | function GetStringFromDLL(filename: string; num: integer): string; |
||
480 | const |
||
481 | // Source: http://www.eggheadcafe.com/forumarchives/vcmfc/sep2005/post23917443.asp |
||
482 | MAX_BUF = 4097; // OK? |
||
483 | var |
||
484 | hLib: THandle; |
||
485 | buf: array[0..MAX_BUF] of char; |
||
486 | begin |
||
487 | hLib := LoadLibrary(PChar(filename)); |
||
488 | try |
||
489 | LoadString(hLib, num, buf, sizeof(buf)); |
||
490 | result := buf; |
||
491 | finally |
||
492 | FreeLibrary(hLib); |
||
493 | end; |
||
494 | end; |
||
495 | |||
496 | function ExpandEnvStr(const szInput: string): string; |
||
497 | const |
||
498 | MAXSIZE = 32768; // laut PSDK sind 32k das Maximum |
||
499 | begin |
||
500 | // Source: http://www.delphi-library.de/topic_Umgebungsvariable+in+einem+String+aufloesen_20516,0.html |
||
501 | SetLength(Result,MAXSIZE); |
||
502 | SetLength(Result,ExpandEnvironmentStrings(pchar(szInput), |
||
503 | @Result[1],length(Result))-1); //-1 um abschließendes #0 zu verwerfen |
||
504 | end; |
||
505 | |||
506 | function DecodeReferenceString(s: string): string; |
||
507 | var |
||
508 | dll, id, lang, cache: string; |
||
509 | sl, sl2: tstringlist; |
||
510 | begin |
||
511 | // Beispiele |
||
512 | // Papierkorb -- Windows 95 |
||
513 | // @C:\WINNT\system32\shell32.dll,-8964@1031,Papierkorb -- Windows 2000 |
||
514 | |||
515 | if Copy(s, 1, 1) = '@' then |
||
516 | begin |
||
517 | // Referenz auf eine DLL |
||
518 | // @<dll>,-<id>[@<lang>][,<cache>] |
||
519 | |||
520 | sl := TStringList.Create; |
||
521 | try |
||
522 | // '@' am Anfang entfernen |
||
523 | s := Copy(s, 2, length(s)-1); |
||
524 | |||
525 | // Nach ',' auftrennen |
||
526 | // sl[0] --> dll |
||
527 | // sl[1] --> -id@lang |
||
528 | // sl[2] --> cache |
||
529 | sl.CommaText := s; |
||
530 | |||
531 | if sl.Count > 2 then |
||
532 | begin |
||
533 | // Das Ergebnis ist bereits im Klartext vorhanden und muss nicht extrahiert werden |
||
534 | // Ist bei Windows 2000 der Fall |
||
535 | cache := sl[2]; |
||
536 | result := cache; |
||
537 | exit; |
||
538 | end; |
||
539 | |||
540 | if sl.Count > 1 then |
||
541 | begin |
||
542 | dll := sl[0]; |
||
543 | |||
544 | sl2 := TStringList.Create; |
||
545 | try |
||
546 | // Nach '@' auftrennen |
||
547 | // sl2[0] --> id |
||
548 | // sl2[1] --> lang |
||
549 | sl2.CommaText := StringReplace(sl[1], '@', ',', [rfReplaceAll]); |
||
550 | |||
551 | id := sl2[0]; |
||
552 | |||
553 | if sl2.Count > 1 then |
||
554 | begin |
||
555 | // ToDo: In Zukunft beachten, sofern möglich |
||
556 | lang := sl2[1]; |
||
557 | end; |
||
558 | |||
559 | // Umgebungsvariablen erkennen und Minuszeichen entfernen |
||
560 | result := GetStringFromDLL(ExpandEnvStr(dll), -StrToInt(id)); |
||
561 | finally |
||
562 | sl2.Free; |
||
563 | end; |
||
564 | end |
||
565 | else |
||
566 | begin |
||
567 | // Zu wenige Informationen! |
||
568 | |||
569 | result := ''; |
||
570 | end; |
||
571 | finally |
||
572 | sl.Free; |
||
573 | end; |
||
574 | end |
||
575 | else |
||
576 | begin |
||
577 | // Kein Hinweis auf eine Referenz |
||
578 | result := s; |
||
579 | end; |
||
580 | end; |
||
581 | |||
582 | function GPBoolToString(value: GPOLICYBOOL): string; |
||
583 | begin |
||
584 | case value of |
||
585 | gpUndefined: result := 'Not configured'; |
||
586 | gpEnabled: result := 'Enabled'; |
||
587 | gpDisabled: result := 'Disabled'; |
||
588 | end; |
||
589 | end; |
||
590 | |||
591 | { TRbRecycleBin } |
||
592 | |||
593 | constructor TRbRecycleBin.Create(AFileOrDirectory: string; ASID: string=''); |
||
594 | begin |
||
595 | inherited Create; |
||
596 | |||
597 | FFileOrDirectory := AFileOrDirectory; |
||
598 | FSID := ASID; |
||
76 | daniel-mar | 599 | TolerantReading := true; |
75 | daniel-mar | 600 | end; |
601 | |||
602 | // TODO: also a function that tests if the data files are still existing |
||
603 | function TRbRecycleBin.CheckIndexes(slErrors: TStrings): boolean; |
||
604 | |||
605 | procedure _Assert(assertion: boolean; msg: string; args: array of const); |
||
606 | begin |
||
607 | if not assertion then |
||
608 | begin |
||
609 | slErrors.Add(Format(msg, args)); |
||
610 | result := false; |
||
611 | end; |
||
612 | end; |
||
613 | |||
614 | procedure _HandleIndexFile(AFile: string); |
||
615 | var |
||
616 | fs: TFileStream; |
||
76 | daniel-mar | 617 | infoHdr: TRbInfoHeader; |
75 | daniel-mar | 618 | resourcestring |
619 | LNG_IDXERR_VISTA_FILESIZE = '%s: Vista index file has wrong size'; |
||
620 | LNG_IDXERR_INFO_RECSIZE_UNEXPECTED = '%s: record size unexpected'; |
||
621 | LNG_IDXERR_INFO_UNEXPECTED_EOF = '%s: file size wrong'; |
||
622 | begin |
||
623 | fs := TFileStream.Create(AFile, fmOpenRead); |
||
624 | try |
||
625 | fs.Seek(0, soFromBeginning); |
||
626 | |||
627 | if SameText(copy(ExtractFileName(AFile), 1, 2), '$I') then |
||
628 | begin |
||
629 | _Assert(fs.Size = SizeOf(TRbVistaItem), LNG_IDXERR_VISTA_FILESIZE, [AFile]); |
||
630 | end |
||
76 | daniel-mar | 631 | else if SameText(ExtractFileName(AFile), 'INFO') or |
632 | SameText(ExtractFileName(AFile), 'INFO2') then |
||
75 | daniel-mar | 633 | begin |
634 | fs.ReadBuffer(infoHdr, SizeOf(infoHdr)); |
||
76 | daniel-mar | 635 | _Assert((infoHdr.recordLength = SizeOf(TRbInfoRecordA)) or |
636 | (infoHdr.recordLength = SizeOf(TRbInfoRecordW)), LNG_IDXERR_INFO_RECSIZE_UNEXPECTED, [AFile]); |
||
75 | daniel-mar | 637 | _Assert((fs.Size-fs.Position) mod infoHdr.recordLength = 0, LNG_IDXERR_INFO_UNEXPECTED_EOF, [AFile]); |
76 | daniel-mar | 638 | // TODO: we can also check infoHdr.totalSize or infoHdr.totalEntries |
75 | daniel-mar | 639 | end |
76 | daniel-mar | 640 | else Assert(false); |
75 | daniel-mar | 641 | |
642 | // TODO: we could check each item for invalid stuff...? |
||
643 | finally |
||
644 | FreeAndNil(fs); |
||
645 | end; |
||
646 | end; |
||
647 | |||
648 | procedure _HandleVistaDir(ADirectory: string); |
||
649 | var |
||
650 | SR: TSearchRec; |
||
651 | begin |
||
652 | ADirectory := IncludeTrailingPathDelimiter(ADirectory); |
||
653 | |||
654 | if FindFirst(ADirectory + '$I*', faAnyFile, SR) = 0 then |
||
655 | begin |
||
656 | repeat |
||
657 | _HandleIndexFile(ADirectory+sr.Name); |
||
658 | until FindNext(SR) <> 0; |
||
659 | end; |
||
660 | FindClose(SR); |
||
661 | end; |
||
662 | |||
663 | begin |
||
664 | result := true; |
||
665 | |||
666 | if DirectoryExists(FFileOrDirectory) then // Vista, as well as directories with INFO and INFO2 |
||
667 | begin |
||
668 | _HandleVistaDir(FFileOrDirectory); |
||
669 | |||
670 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2') then |
||
671 | begin |
||
672 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2'); |
||
673 | end; |
||
674 | |||
675 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO') then |
||
676 | begin |
||
677 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO'); |
||
678 | end; |
||
679 | end |
||
680 | else if FileExists(FFileOrDirectory) then |
||
681 | begin |
||
682 | _HandleIndexFile(FFileOrDirectory); |
||
683 | end |
||
684 | else raise Exception.CreateFmt(LNG_FILE_NOT_FOUND, [FFileOrDirectory]); |
||
685 | end; |
||
686 | |||
687 | function TRbRecycleBin.GetItem(id: string): TRbRecycleBinItem; |
||
688 | |||
689 | procedure _HandleIndexFile(AFile: string); |
||
690 | var |
||
691 | fs: TFileStream; |
||
76 | daniel-mar | 692 | infoHdr: TRbInfoHeader; |
75 | daniel-mar | 693 | testItem: TRbRecycleBinItem; |
694 | begin |
||
695 | fs := TFileStream.Create(AFile, fmOpenRead); |
||
696 | try |
||
697 | fs.Seek(0, soFromBeginning); |
||
698 | |||
82 | daniel-mar | 699 | if SameText(ExtractFileName(AFile), '$I'+id) then |
75 | daniel-mar | 700 | begin |
82 | daniel-mar | 701 | result := TRbVistaItem.Create(fs, AFile, id); |
75 | daniel-mar | 702 | end |
703 | else |
||
704 | begin |
||
705 | fs.ReadBuffer(infoHdr, SizeOf(infoHdr)); |
||
706 | case infoHdr.recordLength of |
||
76 | daniel-mar | 707 | SizeOf(TRbInfoRecordA): |
75 | daniel-mar | 708 | begin |
709 | while fs.Position < fs.size do |
||
710 | begin |
||
76 | daniel-mar | 711 | testItem := TRbInfoAItem.Create(fs, AFile); |
75 | daniel-mar | 712 | if testItem.ID = id then |
713 | begin |
||
714 | result := testItem; |
||
715 | break; |
||
716 | end; |
||
717 | end; |
||
718 | end; |
||
76 | daniel-mar | 719 | SizeOf(TRbInfoRecordW): |
75 | daniel-mar | 720 | begin |
721 | while fs.Position < fs.size do |
||
722 | begin |
||
76 | daniel-mar | 723 | testItem := TRbInfoWItem.Create(fs, AFile); |
75 | daniel-mar | 724 | if testItem.ID = id then |
725 | begin |
||
726 | result := testItem; |
||
727 | break; |
||
728 | end; |
||
729 | end; |
||
730 | end |
||
731 | else |
||
732 | begin |
||
733 | raise Exception.CreateFmt(LNG_INVALID_INFO_FORMAT, [AFile]); |
||
734 | end; |
||
735 | end; |
||
736 | end; |
||
737 | finally |
||
738 | FreeAndNil(fs); |
||
739 | end; |
||
740 | end; |
||
741 | |||
742 | procedure _HandleVistaDir(ADirectory: string); |
||
743 | var |
||
744 | SR: TSearchRec; |
||
745 | fs: TFileStream; |
||
746 | id: string; |
||
747 | begin |
||
748 | ADirectory := IncludeTrailingPathDelimiter(ADirectory); |
||
749 | |||
750 | if FileExists(ADirectory + '$I' + id) then |
||
751 | begin |
||
752 | fs := TFileStream.Create(ADirectory+sr.Name, fmOpenRead); |
||
753 | try |
||
754 | fs.Seek(0, soFromBeginning); |
||
755 | result := TRbVistaItem.Create(fs, ADirectory+sr.Name, id); |
||
756 | finally |
||
757 | FreeAndNil(fs); |
||
758 | end; |
||
759 | end; |
||
760 | end; |
||
761 | |||
762 | begin |
||
763 | result := nil; |
||
764 | |||
765 | if DirectoryExists(FFileOrDirectory) then // Vista, as well as directories with INFO and INFO2 |
||
766 | begin |
||
767 | _HandleVistaDir(FFileOrDirectory); |
||
768 | if Assigned(result) then exit; |
||
769 | |||
770 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2') then |
||
771 | begin |
||
772 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2'); |
||
773 | if Assigned(result) then exit; |
||
774 | end; |
||
775 | |||
776 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO') then |
||
777 | begin |
||
778 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO'); |
||
779 | if Assigned(result) then exit; |
||
780 | end; |
||
781 | end |
||
782 | else if FileExists(FFileOrDirectory) then |
||
783 | begin |
||
784 | _HandleIndexFile(FFileOrDirectory); |
||
785 | if Assigned(result) then exit; |
||
786 | end |
||
787 | else raise Exception.CreateFmt(LNG_FILE_NOT_FOUND, [FFileOrDirectory]); |
||
788 | end; |
||
789 | |||
790 | procedure TRbRecycleBin.ListItems(list: TObjectList{TRbRecycleBinItem}); |
||
791 | |||
792 | procedure _HandleIndexFile(AFile: string); |
||
793 | var |
||
794 | fs: TFileStream; |
||
76 | daniel-mar | 795 | infoHdr: TRbInfoHeader; |
75 | daniel-mar | 796 | testID: string; |
76 | daniel-mar | 797 | wTest: TRbInfoWItem; |
798 | bakPosition: int64; |
||
75 | daniel-mar | 799 | begin |
800 | fs := TFileStream.Create(AFile, fmOpenRead); |
||
801 | try |
||
802 | fs.Seek(0, soFromBeginning); |
||
803 | |||
82 | daniel-mar | 804 | if SameText(copy(ExtractFileName(AFile), 1, 2), '$I') then |
75 | daniel-mar | 805 | begin |
82 | daniel-mar | 806 | testID := copy(testID, 3, Length(testID)-2); |
75 | daniel-mar | 807 | list.Add(TRbVistaItem.Create(fs, AFile, testID)); |
808 | end |
||
809 | else |
||
810 | begin |
||
76 | daniel-mar | 811 | if TolerantReading then |
812 | begin |
||
813 | // This is a special treatment how to recover data from an INFO/INFO2 file |
||
814 | // which was corrupted by an incompatible multiboot configuration. |
||
815 | // Example: |
||
816 | // - Win95 without IE4 and WinNT4 both write into the INFO file. But Win95 appends the ANSI record and WinNT appends an Unicode record. |
||
817 | // - 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. |
||
818 | fs.ReadBuffer(infoHdr, SizeOf(infoHdr)); |
||
819 | while fs.Position < fs.size do |
||
75 | daniel-mar | 820 | begin |
76 | daniel-mar | 821 | // Can we actually read a Unicode record? |
822 | if fs.Position + SizeOf(TRbInfoRecordW) <= fs.Size then |
||
75 | daniel-mar | 823 | begin |
76 | daniel-mar | 824 | // Try to read the Unicode record and check if it is valid |
825 | // In case it is no Unicode record, then the Unicode part will be the |
||
826 | // ANSI source name of the next record. In this case, we won't get |
||
827 | // a ':' at the Unicode string. |
||
828 | bakPosition := fs.Position; |
||
829 | wTest := TRbInfoWItem.Create(fs, AFile); |
||
830 | if Copy(wTest.SourceUnicode, 2, 1) = ':' then |
||
831 | begin |
||
832 | // Yes, it is a valid Unicode record. |
||
833 | list.Add(wTest); |
||
834 | end |
||
835 | else |
||
836 | begin |
||
837 | // No, it is not a valid Unicode record. Jump back, and we need |
||
838 | // to assume that the following record will be a valid ANSI record. |
||
839 | fs.Position := bakPosition; |
||
840 | list.Add(TRbInfoAItem.Create(fs, AFile)); |
||
841 | end; |
||
842 | end |
||
843 | else |
||
844 | begin |
||
845 | // No, there is not enough space left for an Unicode record. |
||
846 | // So we assume that the following record will be a valid ANSI record. |
||
847 | list.Add(TRbInfoAItem.Create(fs, AFile)); |
||
75 | daniel-mar | 848 | end; |
849 | end; |
||
76 | daniel-mar | 850 | end |
851 | else |
||
852 | begin |
||
853 | // This is the code for non-tolerant reading of the records. |
||
854 | fs.ReadBuffer(infoHdr, SizeOf(infoHdr)); |
||
855 | case infoHdr.recordLength of |
||
856 | SizeOf(TRbInfoRecordA): |
||
75 | daniel-mar | 857 | begin |
76 | daniel-mar | 858 | while fs.Position < fs.size do |
859 | begin |
||
860 | list.Add(TRbInfoAItem.Create(fs, AFile)); |
||
861 | end; |
||
75 | daniel-mar | 862 | end; |
76 | daniel-mar | 863 | SizeOf(TRbInfoRecordW): |
864 | begin |
||
865 | while fs.Position < fs.size do |
||
866 | begin |
||
867 | list.Add(TRbInfoWItem.Create(fs, AFile)); |
||
868 | end; |
||
869 | end |
||
870 | else |
||
871 | begin |
||
872 | raise Exception.CreateFmt(LNG_INVALID_INFO_FORMAT, [AFile]); |
||
873 | end; |
||
75 | daniel-mar | 874 | end; |
875 | end; |
||
876 | end; |
||
877 | finally |
||
878 | FreeAndNil(fs); |
||
879 | end; |
||
880 | end; |
||
881 | |||
882 | procedure _HandleVistaDir(ADirectory: string); |
||
883 | var |
||
884 | SR: TSearchRec; |
||
885 | fs: TFileStream; |
||
886 | id: string; |
||
887 | begin |
||
888 | ADirectory := IncludeTrailingPathDelimiter(ADirectory); |
||
889 | |||
890 | if FindFirst(ADirectory + '$I*', faAnyFile, SR) = 0 then |
||
891 | begin |
||
892 | repeat |
||
893 | id := sr.Name; |
||
894 | { 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 |
||
895 | id := Copy(id, 3, Length(id)-2); |
||
896 | |||
897 | fs := TFileStream.Create(ADirectory+sr.Name, fmOpenRead); |
||
898 | try |
||
899 | fs.Seek(0, soFromBeginning); |
||
900 | list.Add(TRbVistaItem.Create(fs, ADirectory+sr.Name, id)); |
||
901 | finally |
||
902 | FreeAndNil(fs); |
||
903 | end; |
||
904 | until FindNext(SR) <> 0; |
||
905 | end; |
||
906 | FindClose(SR); |
||
907 | end; |
||
908 | |||
909 | begin |
||
910 | if DirectoryExists(FFileOrDirectory) then // Vista, as well as directories with INFO and INFO2 |
||
911 | begin |
||
912 | _HandleVistaDir(FFileOrDirectory); |
||
913 | |||
914 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2') then |
||
915 | begin |
||
916 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2'); |
||
917 | end; |
||
918 | |||
919 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO') then |
||
920 | begin |
||
921 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO'); |
||
922 | end; |
||
923 | end |
||
924 | else if FileExists(FFileOrDirectory) then |
||
925 | begin |
||
76 | daniel-mar | 926 | _HandleIndexFile(FFileOrDirectory); // Either INFO, or INFO2, or a single Vista index file |
75 | daniel-mar | 927 | end |
928 | else raise Exception.CreateFmt(LNG_FILE_NOT_FOUND, [FFileOrDirectory]); |
||
929 | end; |
||
930 | |||
931 | { TRbDrive } |
||
932 | |||
933 | procedure TRbDrive.CheckDriveExisting; |
||
934 | begin |
||
935 | // Does the drive exist? |
||
936 | // see http://www.delphipraxis.net/post2933.html |
||
78 | daniel-mar | 937 | if not GetLogicalDrives and (1 shl DriveNumber) <> 0 then |
75 | daniel-mar | 938 | begin |
939 | raise EInvalidDrive.CreateFmt(LNG_DRIVE_NOT_EXISTING, [UpperCase(FDriveLetter)+':']); |
||
940 | end; |
||
941 | end; |
||
942 | |||
943 | constructor TRbDrive.Create(ADriveLetter: Char); |
||
944 | begin |
||
945 | inherited Create; |
||
946 | |||
947 | FDriveLetter := ADriveLetter; |
||
948 | CheckDriveExisting; |
||
949 | end; |
||
950 | |||
78 | daniel-mar | 951 | function TRbDrive.DiskSize: integer; |
952 | begin |
||
953 | result := SysUtils.DiskSize(DriveNumber+1 {0 is current, 1 is A}) div (1024*1024); |
||
954 | end; |
||
955 | |||
956 | function TRbDrive.DriveNumber: integer; |
||
957 | begin |
||
958 | result := DriveLetterToDriveNumber(FDriveLetter); |
||
959 | end; |
||
960 | |||
75 | daniel-mar | 961 | function TRbDrive.GetAPIInfo: TSHQueryRBInfo; |
962 | var |
||
963 | PSHQueryRecycleBin: TSHQueryRecycleBin; |
||
964 | RBHandle: THandle; |
||
965 | res: HRESULT; |
||
966 | Path: string; |
||
967 | begin |
||
968 | Path := FDriveLetter + ':\'; |
||
969 | |||
970 | // Ref: http://www.delphipraxis.net/post1291.html |
||
971 | |||
972 | RBHandle := LoadLibrary(shell32); |
||
973 | try |
||
974 | PSHQueryRecycleBin := nil; |
||
975 | if RBHandle <> 0 then |
||
976 | begin |
||
977 | PSHQueryRecycleBin := GetProcAddress(RBHandle, C_SHQueryRecycleBin); |
||
978 | if not Assigned(@PSHQueryRecycleBin) then |
||
979 | begin |
||
980 | FreeLibrary(RBHandle); |
||
981 | RBHandle := 0; |
||
982 | end; |
||
983 | end; |
||
984 | |||
985 | FillChar(result, SizeOf(TSHQueryRBInfo), 0); |
||
986 | result.cbSize := SizeOf(TSHQueryRBInfo); |
||
987 | |||
988 | if (RBHandle <> 0) and Assigned(PSHQueryRecycleBin) then |
||
989 | begin |
||
990 | res := PSHQueryRecycleBin(PChar(Path), result); |
||
991 | // if Succeeded(res) then |
||
992 | if res = S_OK then |
||
993 | begin |
||
994 | // Alles OK, unser result hat nun die gewünschten Daten. |
||
995 | end |
||
996 | else |
||
997 | begin |
||
998 | // Since Windows Vista, SHQueryRecycleBin will fail with E_FAIL (80004005) |
||
999 | // if Path is a floppy or CD drive... |
||
1000 | raise EAPICallError.CreateFmt(LNG_API_CALL_ERROR, [Format(LNG_ERROR_CODE, [C_SHQueryRecycleBin, Path, '0x'+IntToHex(res, 2*SizeOf(HRESULT))])]); |
||
1001 | end; |
||
1002 | end |
||
1003 | else |
||
1004 | raise EAPICallError.CreateFmt(LNG_API_CALL_ERROR, [Format(LNG_NOT_CALLABLE, [C_SHQueryRecycleBin])]); |
||
1005 | finally |
||
1006 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
||
1007 | end; |
||
1008 | end; |
||
1009 | |||
78 | daniel-mar | 1010 | function TRbDrive.GetMaxPercentUsage: Extended; |
75 | daniel-mar | 1011 | var |
78 | daniel-mar | 1012 | abs: integer; // in MB |
1013 | rel: integer; // in % (0-100) |
||
1014 | gpSetting: integer; |
||
1015 | const |
||
1016 | DEFAULT_PERCENT = 10; // Windows 95 default |
||
1017 | begin |
||
1018 | gpSetting := TRecycleBinManager.RecyclerGroupPolicyRecycleBinSize; |
||
1019 | if gpSetting <> -1 then |
||
1020 | result := gpSetting / 100 |
||
1021 | else if TRecycleBinManager.UsesGlobalSettings then |
||
1022 | result := TRecycleBinManager.GetGlobalMaxPercentUsage / 100 |
||
1023 | else if OldCapacityPercent(rel) then |
||
1024 | begin |
||
1025 | result := rel / 100; |
||
1026 | end |
||
1027 | else if NewCapacityAbsolute(abs) then |
||
1028 | begin |
||
1029 | result := abs / DiskSize; |
||
1030 | end |
||
1031 | else |
||
1032 | begin |
||
1033 | result := DEFAULT_PERCENT / 100; |
||
1034 | end; |
||
1035 | end; |
||
1036 | |||
1037 | function TRbDrive.GetMaxAbsoluteUsage: integer; |
||
1038 | var |
||
1039 | abs: integer; // in MB |
||
1040 | rel: integer; // in % (0-100) |
||
1041 | gpSetting: integer; |
||
1042 | const |
||
1043 | DEFAULT_PERCENT = 10; // Windows 95 default |
||
1044 | begin |
||
1045 | gpSetting := TRecycleBinManager.RecyclerGroupPolicyRecycleBinSize; |
||
1046 | if gpSetting <> -1 then |
||
1047 | result := Ceil(gpSetting/100 * DiskSize) |
||
1048 | else if TRecycleBinManager.UsesGlobalSettings then |
||
1049 | result := Ceil(TRecycleBinManager.GetGlobalMaxPercentUsage/100 * DiskSize) |
||
1050 | else if NewCapacityAbsolute(abs) then |
||
1051 | begin |
||
1052 | result := abs; |
||
1053 | end |
||
1054 | else if OldCapacityPercent(rel) then |
||
1055 | begin |
||
1056 | result := Ceil(rel/100 * DiskSize); |
||
1057 | end |
||
1058 | else |
||
1059 | begin |
||
1060 | result := Ceil(DEFAULT_PERCENT/100 * DiskSize); |
||
1061 | end; |
||
1062 | end; |
||
1063 | |||
1064 | function TRbDrive.OldCapacityPercent(var res: integer): boolean; |
||
1065 | var |
||
75 | daniel-mar | 1066 | reg: TRegistry; |
1067 | purgeInfo: TRbWin95PurgeInfo; |
||
1068 | begin |
||
78 | daniel-mar | 1069 | if Win32MajorVersion >= 6 then |
1070 | begin |
||
1071 | // Only available till Windows XP |
||
1072 | result := false; |
||
1073 | exit; |
||
1074 | end; |
||
75 | daniel-mar | 1075 | |
78 | daniel-mar | 1076 | result := false; |
1077 | |||
75 | daniel-mar | 1078 | reg := TRegistry.Create; |
1079 | try |
||
1080 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1081 | |||
1082 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1083 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1084 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
1085 | begin |
||
1086 | if reg.OpenKeyReadOnly(FDriveLetter) then |
||
1087 | begin |
||
1088 | if reg.ValueExists('Percent') then |
||
1089 | begin |
||
1090 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
1091 | |||
78 | daniel-mar | 1092 | res := reg.ReadInteger('Percent'); |
1093 | result := true; |
||
75 | daniel-mar | 1094 | end; |
1095 | end |
||
1096 | else |
||
1097 | begin |
||
1098 | if reg.ValueExists('PurgeInfo') then |
||
1099 | begin |
||
1100 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
1101 | |||
1102 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
||
1103 | |||
78 | daniel-mar | 1104 | res := purgeInfo.percentDrive[FDriveLetter]; |
1105 | result := true; |
||
75 | daniel-mar | 1106 | end; |
1107 | end; |
||
1108 | |||
1109 | reg.CloseKey; |
||
1110 | end; |
||
1111 | finally |
||
1112 | reg.Free; |
||
1113 | end; |
||
1114 | end; |
||
1115 | |||
78 | daniel-mar | 1116 | function TRbDrive.NewCapacityAbsolute(var res: integer): boolean; |
75 | daniel-mar | 1117 | var |
78 | daniel-mar | 1118 | reg: TRegistry; |
75 | daniel-mar | 1119 | begin |
78 | daniel-mar | 1120 | if Win32MajorVersion < 6 then |
1121 | begin |
||
1122 | // Only available since Windows Vista |
||
1123 | result := false; |
||
1124 | exit; |
||
1125 | end; |
||
75 | daniel-mar | 1126 | |
78 | daniel-mar | 1127 | result := false; |
1128 | |||
1129 | reg := TRegistry.Create; |
||
1130 | try |
||
1131 | reg.RootKey := HKEY_CURRENT_USER; |
||
1132 | |||
1133 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Explorer\BitBucket\Volume') then |
||
1134 | begin |
||
1135 | // Windows Vista and upwards |
||
1136 | if reg.OpenKeyReadOnly(GUIDToString(VolumeGUID)) then |
||
1137 | begin |
||
1138 | res := reg.ReadInteger('MaxCapacity'); // in MB |
||
1139 | result := true; |
||
1140 | end; |
||
1141 | reg.CloseKey; |
||
1142 | end; |
||
1143 | finally |
||
1144 | reg.Free; |
||
1145 | end; |
||
75 | daniel-mar | 1146 | end; |
1147 | |||
1148 | function TRbDrive.GetNukeOnDelete: boolean; |
||
1149 | var |
||
1150 | reg: TRegistry; |
||
1151 | purgeInfo: TRbWin95PurgeInfo; |
||
1152 | const |
||
78 | daniel-mar | 1153 | RES_DEFAULT = false; // Windows 95 default |
75 | daniel-mar | 1154 | begin |
78 | daniel-mar | 1155 | if TRecycleBinManager.RecyclerGroupPolicyNoRecycleFiles = gpEnabled then |
1156 | result := true |
||
1157 | else if TRecycleBinManager.UsesGlobalSettings then |
||
1158 | result := TRecycleBinManager.GetGlobalNukeOnDelete |
||
1159 | else |
||
1160 | begin |
||
1161 | result := RES_DEFAULT; |
||
75 | daniel-mar | 1162 | |
78 | daniel-mar | 1163 | reg := TRegistry.Create; |
1164 | try |
||
1165 | reg.RootKey := HKEY_CURRENT_USER; |
||
75 | daniel-mar | 1166 | |
78 | daniel-mar | 1167 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Explorer\BitBucket\Volume') then |
75 | daniel-mar | 1168 | begin |
78 | daniel-mar | 1169 | // Windows Vista and upwards |
1170 | if reg.OpenKeyReadOnly(GUIDToString(VolumeGUID)) then |
||
75 | daniel-mar | 1171 | begin |
1172 | result := reg.ReadBool('NukeOnDelete'); |
||
1173 | end; |
||
78 | daniel-mar | 1174 | reg.CloseKey; |
75 | daniel-mar | 1175 | end |
1176 | else |
||
1177 | begin |
||
78 | daniel-mar | 1178 | reg.RootKey := HKEY_LOCAL_MACHINE; |
1179 | |||
1180 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1181 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1182 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
75 | daniel-mar | 1183 | begin |
78 | daniel-mar | 1184 | if reg.OpenKeyReadOnly(FDriveLetter) then |
1185 | begin |
||
1186 | if reg.ValueExists('NukeOnDelete') then |
||
1187 | begin |
||
1188 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
75 | daniel-mar | 1189 | |
78 | daniel-mar | 1190 | result := reg.ReadBool('NukeOnDelete'); |
1191 | end; |
||
1192 | end |
||
1193 | else |
||
1194 | begin |
||
1195 | if reg.ValueExists('PurgeInfo') then |
||
1196 | begin |
||
1197 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
75 | daniel-mar | 1198 | |
78 | daniel-mar | 1199 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
1200 | |||
1201 | result := ((purgeInfo.NukeOnDeleteBits shr DriveNumber) and 1) = 1; |
||
1202 | end; |
||
1203 | end; |
||
1204 | |||
1205 | reg.CloseKey; |
||
75 | daniel-mar | 1206 | end; |
1207 | end; |
||
78 | daniel-mar | 1208 | finally |
1209 | reg.Free; |
||
75 | daniel-mar | 1210 | end; |
1211 | end; |
||
1212 | end; |
||
1213 | |||
1214 | function TRbDrive.GetNumItems: int64; |
||
1215 | begin |
||
1216 | result := GetAPIInfo.i64NumItems; |
||
1217 | end; |
||
1218 | |||
1219 | function TRbDrive.GetSize: int64; |
||
1220 | begin |
||
1221 | result := GetAPIInfo.i64Size; |
||
1222 | end; |
||
1223 | |||
1224 | function TRbDrive.GetVolumeGUID: TGUID; |
||
1225 | begin |
||
1226 | if GetDriveGUID(FDriveLetter, result) <> ERROR_SUCCESS then |
||
1227 | begin |
||
1228 | result := NULL_GUID; |
||
1229 | end; |
||
1230 | end; |
||
1231 | |||
77 | daniel-mar | 1232 | function TRbDrive.GetVolumeGUIDAvailable: boolean; |
1233 | begin |
||
1234 | result := not IsEqualGUID(VolumeGUID, NULL_GUID); |
||
1235 | end; |
||
1236 | |||
75 | daniel-mar | 1237 | function TRbDrive.IsEmpty: boolean; |
1238 | begin |
||
1239 | result := GetNumItems = 0; |
||
1240 | end; |
||
1241 | |||
1242 | function TRbDrive.IsFAT: boolean; |
||
1243 | var |
||
1244 | Dummy2: DWORD; |
||
1245 | Dummy3: DWORD; |
||
1246 | FileSystem: array[0..MAX_PATH] of char; |
||
1247 | VolumeName: array[0..MAX_PATH] of char; |
||
1248 | s: string; |
||
1249 | begin |
||
1250 | s := FDriveLetter + DriveDelim + PathDelim; // ohne die Auslagerung in einen String kommt es zu einer AV in ntdll |
||
1251 | GetVolumeInformation(PChar(s), VolumeName, |
||
1252 | SizeOf(VolumeName), nil, Dummy2, Dummy3, FileSystem, SizeOf(FileSystem)); |
||
1253 | result := uppercase(copy(FileSystem, 0, 3)) = 'FAT'; |
||
1254 | end; |
||
1255 | |||
1256 | procedure TRbDrive.ListRecycleBins(list: TObjectList{TRbRecycleBin}; UserSID: string=''); |
||
1257 | |||
1258 | procedure _AddSIDFolders(dir: string; wholeFolder: boolean); |
||
1259 | var |
||
1260 | SR: TSearchRec; |
||
1261 | begin |
||
1262 | dir := IncludeTrailingPathDelimiter(dir); |
||
1263 | if FindFirst(dir+'S-*', faAnyFile, SR) = 0 then |
||
1264 | begin |
||
1265 | try |
||
1266 | repeat |
||
1267 | if (SR.Name = '.') or (SR.Name = '..') or not DirectoryExists(dir + SR.Name) then continue; |
||
1268 | |||
1269 | if wholeFolder then |
||
1270 | begin |
||
1271 | // Vista |
||
1272 | list.Add(TRbRecycleBin.Create(dir+SR.Name, SR.Name)); |
||
1273 | end |
||
1274 | else |
||
1275 | begin |
||
1276 | // Win95 .. WinXP |
||
1277 | if FileExists(IncludeTrailingPathDelimiter(dir+SR.Name) + 'INFO2') then |
||
1278 | list.Add(TRbRecycleBin.Create(IncludeTrailingPathDelimiter(dir+SR.Name) + 'INFO2', SR.Name)); |
||
1279 | if FileExists(IncludeTrailingPathDelimiter(dir+SR.Name) + 'INFO') then |
||
1280 | list.Add(TRbRecycleBin.Create(IncludeTrailingPathDelimiter(dir+SR.Name) + 'INFO', SR.Name)); |
||
1281 | end; |
||
1282 | until FindNext(SR) <> 0; |
||
1283 | finally |
||
1284 | FindClose(SR); |
||
1285 | end; |
||
1286 | end; |
||
1287 | end; |
||
1288 | |||
1289 | var |
||
1290 | dir: string; |
||
1291 | begin |
||
1292 | // Find recyclers from Windows Vista or higher |
||
1293 | |||
1294 | if IsFAT then |
||
1295 | begin |
||
1296 | dir := FDriveLetter + DriveDelim + PathDelim + '$recycle.bin' + PathDelim; |
||
1297 | if DirectoryExists(dir) then |
||
1298 | begin |
||
1299 | list.Add(TRbRecycleBin.Create(dir)); |
||
1300 | end; |
||
1301 | end |
||
1302 | else |
||
1303 | begin |
||
1304 | if UserSID <> '' then |
||
1305 | begin |
||
1306 | dir := FDriveLetter + DriveDelim + PathDelim + '$recycle.bin' + PathDelim + UserSID + PathDelim; |
||
1307 | if DirectoryExists(dir) then |
||
1308 | begin |
||
1309 | list.Add(TRbRecycleBin.Create(dir, UserSID)); |
||
1310 | end; |
||
1311 | end |
||
1312 | else |
||
1313 | begin |
||
1314 | _AddSIDFolders(FDriveLetter + DriveDelim + PathDelim + '$recycle.bin', true); |
||
1315 | end; |
||
1316 | end; |
||
1317 | |||
1318 | // Find recyclers from Windows before Vista |
||
1319 | |||
1320 | if IsFAT then |
||
1321 | begin |
||
1322 | dir := FDriveLetter + DriveDelim + PathDelim + 'Recycled' + PathDelim; |
||
1323 | |||
1324 | // Both "recycle bins" are possible if you have multiboot (but do overwrite themselfes if you empty them) |
||
1325 | if FileExists(dir + 'INFO2') then |
||
76 | daniel-mar | 1326 | list.Add(TRbRecycleBin.Create(dir + 'INFO2')); // Windows 95 with Internet Explorer 4 Extension or higher Windows 9x versions |
75 | daniel-mar | 1327 | if FileExists(dir + 'INFO') then |
1328 | list.Add(TRbRecycleBin.Create(dir + 'INFO')); // Windows 95 native |
||
1329 | end |
||
1330 | else |
||
1331 | begin |
||
1332 | if UserSID <> '' then |
||
1333 | begin |
||
1334 | dir := FDriveLetter + DriveDelim + PathDelim + 'Recycler' + PathDelim + UserSID + PathDelim; |
||
1335 | |||
1336 | if FileExists(dir + 'INFO2') then |
||
76 | daniel-mar | 1337 | list.Add(TRbRecycleBin.Create(dir + 'INFO2', UserSID)); // Windows 2000+ |
75 | daniel-mar | 1338 | if FileExists(dir + 'INFO') then |
1339 | list.Add(TRbRecycleBin.Create(dir + 'INFO', UserSID)); // Windows NT 4 |
||
1340 | end |
||
1341 | else |
||
1342 | begin |
||
1343 | _AddSIDFolders(FDriveLetter + DriveDelim + PathDelim + 'Recycler', false); |
||
1344 | end; |
||
1345 | end; |
||
1346 | end; |
||
1347 | |||
76 | daniel-mar | 1348 | { TRbInfoAItem } |
75 | daniel-mar | 1349 | |
76 | daniel-mar | 1350 | procedure TRbInfoAItem.ReadFromStream(stream: TStream); |
75 | daniel-mar | 1351 | var |
76 | daniel-mar | 1352 | r: TRbInfoRecordA; |
75 | daniel-mar | 1353 | begin |
1354 | stream.ReadBuffer(r, SizeOf(r)); |
||
1355 | |||
1356 | FSourceDrive := Chr(Ord('A') + r.sourceDrive); |
||
1357 | |||
76 | daniel-mar | 1358 | // Win95 with IE4 and Win2000+: |
1359 | // Wenn ein Eintrag aus der INFO/INFO2 gelöscht wird, dann wird das erste Byte |
||
1360 | // von sourceAnsi auf Null gesetzt, damit die ganze INFO/INFO2 Datei nicht |
||
1361 | // ständig neu geschrieben werden muss (so wie es bei Win95 und WinNT4 der Fall war). |
||
1362 | // Wir lesen den Eintrag trotzdem, da unsere Software ja auch zu forensischen |
||
1363 | // Zwecken eingesetzt werden soll. |
||
75 | daniel-mar | 1364 | if r.sourceAnsi[0] = #0 then |
1365 | begin |
||
1366 | FRemovedEntry := true; |
||
1367 | r.sourceAnsi[0] := FSourceDrive; |
||
1368 | end; |
||
1369 | |||
1370 | FSourceAnsi := r.sourceAnsi; |
||
1371 | FSourceUnicode := r.sourceAnsi; // Unicode does not exist in INFO(1) structure |
||
1372 | FID := IntToStr(r.recordNumber); |
||
1373 | FDeletionTime := FileTimeToDateTime(r.deletionTime); |
||
1374 | FOriginalSize := r.originalSize; |
||
1375 | end; |
||
1376 | |||
76 | daniel-mar | 1377 | function TRbInfoAItem.DeleteFile: boolean; |
75 | daniel-mar | 1378 | var |
1379 | r: string; |
||
1380 | begin |
||
1381 | r := GetPhysicalFile; |
||
1382 | if DirectoryExists(r) then |
||
1383 | result := DeleteDirectory(r) // Usually, the old recycle bin does not allow folders. Just to be sure, we include the code. |
||
1384 | else |
||
1385 | result := SysUtils.DeleteFile(r); // TODO: geht das oder gibt es zugriffsverletzung? --> Win95: Funktioniert |
||
1386 | |||
1387 | // TODO: nun auch den eintrag aus der INFO-Datei rausschmeißen (Datei neu schreiben) |
||
1388 | end; |
||
1389 | |||
76 | daniel-mar | 1390 | function TRbInfoAItem.GetPhysicalFile: string; |
75 | daniel-mar | 1391 | begin |
1392 | if FRemovedEntry then |
||
1393 | begin |
||
1394 | result := ''; |
||
1395 | Exit; |
||
1396 | end; |
||
1397 | |||
1398 | // e.g. C:\...\DC0.doc |
||
1399 | result := IncludeTrailingPathDelimiter(ExtractFilePath(IndexFile)) + |
||
76 | daniel-mar | 1400 | 'D' + (* SourceDrive *) SourceAnsi[1] + ID + ExtractFileExt(SourceAnsi); |
75 | daniel-mar | 1401 | end; |
1402 | |||
76 | daniel-mar | 1403 | constructor TRbInfoAItem.Create(fs: TStream; AIndexFile: string); |
75 | daniel-mar | 1404 | begin |
1405 | inherited Create; |
||
1406 | ReadFromStream(fs); |
||
1407 | FIndexFile := AIndexFile; |
||
1408 | end; |
||
1409 | |||
76 | daniel-mar | 1410 | { TRbInfoWItem } |
75 | daniel-mar | 1411 | |
76 | daniel-mar | 1412 | procedure TRbInfoWItem.ReadFromStream(stream: TStream); |
75 | daniel-mar | 1413 | var |
76 | daniel-mar | 1414 | r: TRbInfoRecordW; |
75 | daniel-mar | 1415 | begin |
1416 | stream.ReadBuffer(r, SizeOf(r)); |
||
1417 | |||
76 | daniel-mar | 1418 | // Win95 with IE4 and Win2000+: |
1419 | // Wenn ein Eintrag aus der INFO/INFO2 gelöscht wird, dann wird das erste Byte |
||
1420 | // von sourceAnsi auf Null gesetzt, damit die ganze INFO/INFO2 Datei nicht |
||
1421 | // ständig neu geschrieben werden muss (so wie es bei Win95 und WinNT4 der Fall war). |
||
75 | daniel-mar | 1422 | // Wir lesen den Eintrag trotzdem, da unsere Software ja auch zu forensischen |
1423 | // Zwecken eingesetzt werden soll. |
||
1424 | if r.sourceAnsi[0] = #0 then |
||
1425 | begin |
||
1426 | FRemovedEntry := true; |
||
1427 | r.sourceAnsi[0] := AnsiChar(r.sourceUnicode[0]); |
||
1428 | end; |
||
1429 | |||
1430 | FSourceAnsi := r.sourceAnsi; |
||
1431 | FSourceUnicode := r.sourceUnicode; |
||
1432 | FID := IntToStr(r.recordNumber); |
||
1433 | FSourceDrive := Chr(Ord('A') + r.sourceDrive); |
||
1434 | FDeletionTime := FileTimeToDateTime(r.deletionTime); |
||
1435 | FOriginalSize := r.originalSize; |
||
1436 | end; |
||
1437 | |||
76 | daniel-mar | 1438 | function TRbInfoWItem.DeleteFile: boolean; |
75 | daniel-mar | 1439 | var |
1440 | r: string; |
||
1441 | begin |
||
1442 | r := GetPhysicalFile; |
||
1443 | if DirectoryExists(r) then |
||
1444 | result := DeleteDirectory(r) |
||
1445 | else |
||
1446 | result := SysUtils.DeleteFile(r); // TODO: geht das oder gibt es zugriffsverletzung? |
||
1447 | |||
1448 | // TODO: nun auch den eintrag aus der INFO-Datei rausschmeißen (Erstes Byte auf 0 setzen) |
||
1449 | end; |
||
1450 | |||
76 | daniel-mar | 1451 | function TRbInfoWItem.GetPhysicalFile: string; |
75 | daniel-mar | 1452 | begin |
1453 | if FRemovedEntry then |
||
1454 | begin |
||
1455 | result := ''; |
||
1456 | Exit; |
||
1457 | end; |
||
1458 | |||
76 | daniel-mar | 1459 | (* |
1460 | This is actually a bit tricky... |
||
1461 | Win95 will choose the first letter of the AnsiSource name. |
||
1462 | WinNT will choose the first letter of the UnicodeSource name. |
||
1463 | WinXP will choose the driveNumber member. |
||
1464 | |||
1465 | Windows XP is kinda buggy when it comes to changing a drive letter. |
||
1466 | For example, the drive E: was changed to K: |
||
1467 | The drive letter is 04 (E), the Source name begins with E:\ and the physical file is De0.txt . |
||
1468 | After the recycle bin is opened the first time: |
||
1469 | - The recycle bin will show the file origin as K:\ and not as E:\ |
||
1470 | - The file was renamed from De0.txt to Dk0.txt |
||
1471 | - The file can be recovered at this time |
||
1472 | When the recycle bin is closed, the INFO2 file will not be corrected (which is a bug). |
||
1473 | So, if you open the recycle bin again, the record will be marked |
||
1474 | as deleted in the INFO file (the first byte will be set to 0), |
||
1475 | because Windows searches for De0.txt and doesn't find it. |
||
1476 | |||
1477 | (This comment also applies to TRbInfoAItem.GetPhysicalFile) |
||
1478 | *) |
||
1479 | |||
75 | daniel-mar | 1480 | // e.g. C:\...\DC0.doc |
1481 | result := IncludeTrailingPathDelimiter(ExtractFilePath(IndexFile)) + |
||
76 | daniel-mar | 1482 | 'D' + SourceDrive (* SourceUnicode[1] *) + ID + ExtractFileExt(SourceUnicode); |
75 | daniel-mar | 1483 | end; |
1484 | |||
76 | daniel-mar | 1485 | constructor TRbInfoWItem.Create(fs: TStream; AIndexFile: string); |
75 | daniel-mar | 1486 | begin |
1487 | inherited Create; |
||
1488 | ReadFromStream(fs); |
||
1489 | FIndexFile := AIndexFile; |
||
1490 | end; |
||
1491 | |||
1492 | { TRbVistaItem } |
||
1493 | |||
1494 | procedure TRbVistaItem.ReadFromStream(stream: TStream); |
||
1495 | var |
||
82 | daniel-mar | 1496 | r1: TRbVistaRecord1; |
1497 | r2: TRbVistaRecord2Head; |
||
1498 | r2SourceUnicode: array of WideChar; |
||
1499 | version: DWORD; |
||
75 | daniel-mar | 1500 | begin |
82 | daniel-mar | 1501 | stream.ReadBuffer(version, SizeOf(version)); |
75 | daniel-mar | 1502 | |
82 | daniel-mar | 1503 | if version = 1 then |
1504 | begin |
||
1505 | stream.Seek(0, soBeginning); |
||
1506 | stream.ReadBuffer(r1, SizeOf(r1)); |
||
1507 | FSourceAnsi := AnsiString(r1.sourceUnicode); // Invalid chars are automatically converted into '?' |
||
1508 | FSourceUnicode := WideString(r1.sourceUnicode); |
||
1509 | FID := ''; // will be added manually (at the constructor) |
||
1510 | FSourceDrive := AnsiChar(r1.sourceUnicode[1]); |
||
1511 | FDeletionTime := FileTimeToDateTime(r1.deletionTime); |
||
1512 | FOriginalSize := r1.originalSize; |
||
1513 | end |
||
1514 | else if version = 2 then |
||
1515 | begin |
||
1516 | stream.Seek(0, soBeginning); |
||
1517 | stream.ReadBuffer(r2, SizeOf(r2)); |
||
1518 | |||
1519 | SetLength(r2SourceUnicode, 2*(r2.SourceCountChars-1)); |
||
1520 | stream.Read(r2SourceUnicode[0], 2*(r2.sourceCountChars-1)); |
||
1521 | |||
1522 | FSourceAnsi := AnsiString(WideString(r2sourceUnicode)); // Invalid chars are automatically converted into '?' |
||
1523 | FSourceUnicode := WideString(r2sourceUnicode); |
||
1524 | FID := ''; // will be added manually (at the constructor) |
||
1525 | FSourceDrive := AnsiChar(r2sourceUnicode[1]); |
||
1526 | FDeletionTime := FileTimeToDateTime(r2.deletionTime); |
||
1527 | FOriginalSize := r2.originalSize; |
||
1528 | end |
||
1529 | else |
||
1530 | begin |
||
1531 | raise Exception.CreateFmt('Invalid Vista index format version %d', [version]); |
||
1532 | end; |
||
75 | daniel-mar | 1533 | end; |
1534 | |||
1535 | function TRbVistaItem.DeleteFile: boolean; |
||
1536 | var |
||
1537 | r: string; |
||
1538 | begin |
||
1539 | r := GetPhysicalFile; |
||
1540 | if DirectoryExists(r) then |
||
1541 | result := DeleteDirectory(r) |
||
1542 | else |
||
1543 | result := SysUtils.DeleteFile(r); |
||
1544 | |||
1545 | SysUtils.DeleteFile(FIndexFile); |
||
1546 | end; |
||
1547 | |||
1548 | function TRbVistaItem.GetPhysicalFile: string; |
||
1549 | begin |
||
1550 | result := FIndexFile; |
||
1551 | result := StringReplace(Result, '$I', '$R', [rfIgnoreCase]); |
||
1552 | end; |
||
1553 | |||
1554 | constructor TRbVistaItem.Create(fs: TStream; AIndexFile, AID: string); |
||
1555 | begin |
||
1556 | inherited Create; |
||
1557 | ReadFromStream(fs); |
||
1558 | FIndexFile := AIndexFile; |
||
1559 | FID := AID; |
||
1560 | end; |
||
1561 | |||
1562 | { TRecycleBinManager } |
||
1563 | |||
1564 | class function TRecycleBinManager.EmptyOwnRecyclers(flags: cardinal): boolean; |
||
1565 | var |
||
1566 | PSHEmptyRecycleBin: TSHEmptyRecycleBin; |
||
1567 | LibHandle: THandle; |
||
1568 | begin |
||
1569 | // Source: http://www.dsdt.info/tipps/?id=176 |
||
1570 | result := true; |
||
1571 | LibHandle := LoadLibrary(shell32); |
||
1572 | try |
||
1573 | if LibHandle <> 0 then |
||
1574 | begin |
||
1575 | @PSHEmptyRecycleBin := GetProcAddress(LibHandle, C_SHEmptyRecycleBinA); |
||
1576 | if @PSHEmptyRecycleBin <> nil then |
||
1577 | begin |
||
1578 | PSHEmptyRecycleBin(hInstance, nil, flags); |
||
1579 | end |
||
1580 | else |
||
1581 | result := false; |
||
1582 | end |
||
1583 | else |
||
1584 | result := false; |
||
1585 | finally |
||
1586 | @PSHEmptyRecycleBin := nil; |
||
1587 | if LibHandle <> 0 then FreeLibrary(LibHandle); |
||
1588 | end; |
||
1589 | end; |
||
1590 | |||
1591 | class function TRecycleBinManager.EmptyOwnRecyclers(sound, progress, confirmation: boolean): boolean; |
||
1592 | const |
||
1593 | SHERB_NOCONFIRMATION = $00000001; |
||
1594 | SHERB_NOPROGRESSUI = $00000002; |
||
1595 | SHERB_NOSOUND = $00000004; |
||
1596 | var |
||
1597 | flags: cardinal; |
||
1598 | begin |
||
1599 | flags := 0; |
||
1600 | |||
1601 | if not progress then |
||
1602 | flags := flags or SHERB_NOPROGRESSUI; |
||
1603 | if not confirmation then |
||
1604 | flags := flags or SHERB_NOCONFIRMATION; |
||
1605 | if not sound then |
||
1606 | flags := flags or SHERB_NOSOUND; |
||
1607 | |||
1608 | result := EmptyOwnRecyclers(flags); |
||
1609 | end; |
||
1610 | |||
1611 | class function TRecycleBinManager.GetGlobalMaxPercentUsage: integer; |
||
1612 | var |
||
1613 | reg: TRegistry; |
||
1614 | purgeInfo: TRbWin95PurgeInfo; |
||
1615 | const |
||
1616 | RES_DEFAULT = 10; // Windows 95 - Standardwert |
||
1617 | begin |
||
78 | daniel-mar | 1618 | if Win32MajorVersion >= 6 then |
1619 | begin |
||
1620 | // Only available till Windows XP |
||
1621 | result := -1; |
||
1622 | exit; |
||
1623 | end; |
||
1624 | |||
75 | daniel-mar | 1625 | result := RES_DEFAULT; |
1626 | |||
1627 | reg := TRegistry.Create; |
||
1628 | try |
||
1629 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1630 | |||
1631 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1632 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1633 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
1634 | begin |
||
1635 | if reg.ValueExists('Percent') then |
||
1636 | begin |
||
1637 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
1638 | |||
1639 | result := reg.ReadInteger('Percent'); |
||
1640 | end |
||
1641 | else if reg.ValueExists('PurgeInfo') then |
||
1642 | begin |
||
1643 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
1644 | |||
1645 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
||
1646 | result := purgeInfo.percentGlobal; |
||
1647 | end; |
||
1648 | |||
1649 | reg.CloseKey; |
||
1650 | end; |
||
1651 | finally |
||
1652 | reg.Free; |
||
1653 | end; |
||
1654 | end; |
||
1655 | |||
1656 | class function TRecycleBinManager.GetGlobalNukeOnDelete: boolean; |
||
1657 | var |
||
1658 | reg: TRegistry; |
||
1659 | purgeInfo: TRbWin95PurgeInfo; |
||
1660 | const |
||
1661 | RES_DEFAULT = false; // Windows 95 - Standardwert |
||
1662 | begin |
||
78 | daniel-mar | 1663 | if Win32MajorVersion >= 6 then |
1664 | begin |
||
1665 | // Only available till Windows XP |
||
1666 | result := false; |
||
1667 | exit; |
||
1668 | end; |
||
1669 | |||
75 | daniel-mar | 1670 | result := RES_DEFAULT; |
1671 | |||
1672 | reg := TRegistry.Create; |
||
1673 | try |
||
1674 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1675 | |||
1676 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1677 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1678 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
1679 | begin |
||
1680 | if reg.ValueExists('NukeOnDelete') then |
||
1681 | begin |
||
1682 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
1683 | |||
1684 | result := reg.ReadBool('NukeOnDelete'); |
||
1685 | end |
||
1686 | else if reg.ValueExists('PurgeInfo') then |
||
1687 | begin |
||
1688 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
1689 | |||
1690 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
||
1691 | result := (purgeInfo.NukeOnDeleteBits and $8000000) = $8000000; // bit 27 |
||
1692 | end; |
||
1693 | |||
1694 | reg.CloseKey; |
||
1695 | end; |
||
1696 | finally |
||
1697 | reg.Free; |
||
1698 | end; |
||
1699 | end; |
||
1700 | |||
76 | daniel-mar | 1701 | (* TODO: |
1702 | There are more registry values (found in WinXP): |
||
1703 | |||
1704 | BitBucket\<driveletter> |
||
1705 | VolumeSerialNumber |
||
1706 | IsUnicode |
||
1707 | |||
1708 | *) |
||
1709 | |||
75 | daniel-mar | 1710 | class function TRecycleBinManager.UsesGlobalSettings: boolean; |
1711 | var |
||
1712 | reg: TRegistry; |
||
1713 | purgeInfo: TRbWin95PurgeInfo; |
||
1714 | const |
||
1715 | RES_DEFAULT = true; // Windows 95 - Standardwert |
||
1716 | begin |
||
78 | daniel-mar | 1717 | if Win32MajorVersion >= 6 then |
1718 | begin |
||
1719 | // Only available till Windows XP |
||
1720 | result := false; |
||
1721 | exit; |
||
1722 | end; |
||
1723 | |||
75 | daniel-mar | 1724 | result := RES_DEFAULT; |
1725 | |||
1726 | reg := TRegistry.Create; |
||
1727 | try |
||
1728 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1729 | |||
1730 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1731 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1732 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
1733 | begin |
||
1734 | if reg.ValueExists('UseGlobalSettings') then |
||
1735 | begin |
||
1736 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
1737 | |||
1738 | result := reg.ReadBool('UseGlobalSettings'); |
||
1739 | end |
||
1740 | else if reg.ValueExists('PurgeInfo') then |
||
1741 | begin |
||
1742 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
1743 | |||
1744 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
||
1745 | result := purgeInfo.bGlobalSettings; |
||
1746 | end; |
||
1747 | |||
1748 | reg.CloseKey; |
||
1749 | end; |
||
1750 | finally |
||
1751 | reg.Free; |
||
1752 | end; |
||
1753 | end; |
||
1754 | |||
1755 | class procedure TRecycleBinManager.ListDrives(list: TObjectList{TRbDrive}); |
||
1756 | var |
||
1757 | drive: Char; |
||
1758 | begin |
||
1759 | for drive := 'A' to 'Z' do |
||
1760 | if RecycleBinPossible(drive) then |
||
1761 | list.Add(TRbDrive.Create(drive)); |
||
1762 | end; |
||
1763 | |||
1764 | class function TRecycleBinManager.OwnRecyclersEmpty: boolean; |
||
1765 | var |
||
1766 | drives: TObjectList; |
||
1767 | i: integer; |
||
1768 | begin |
||
1769 | result := true; |
||
1770 | |||
1771 | drives := TObjectList.Create(true); |
||
1772 | try |
||
1773 | ListDrives(drives); |
||
1774 | for i := 0 to drives.Count - 1 do |
||
1775 | begin |
||
1776 | result := result and TRbDrive(drives.Items[i]).IsEmpty; |
||
1777 | if not result then break; |
||
1778 | end; |
||
1779 | finally |
||
1780 | drives.Free; |
||
1781 | end; |
||
1782 | end; |
||
1783 | |||
1784 | class function TRecycleBinManager.OwnRecyclersNumItems: int64; |
||
1785 | var |
||
1786 | drives: TObjectList; |
||
1787 | i: integer; |
||
1788 | begin |
||
1789 | result := 0; |
||
1790 | |||
1791 | drives := TObjectList.Create(true); |
||
1792 | try |
||
1793 | ListDrives(drives); |
||
1794 | for i := 0 to drives.Count - 1 do |
||
1795 | begin |
||
1796 | result := result + TRbDrive(drives.Items[i]).GetNumItems; |
||
1797 | end; |
||
1798 | finally |
||
1799 | drives.Free; |
||
1800 | end; |
||
1801 | end; |
||
1802 | |||
1803 | class function TRecycleBinManager.OwnRecyclersSize: int64; |
||
1804 | var |
||
1805 | drives: TObjectList; |
||
1806 | i: integer; |
||
1807 | begin |
||
1808 | result := 0; |
||
1809 | |||
1810 | drives := TObjectList.Create(true); |
||
1811 | try |
||
1812 | ListDrives(drives); |
||
1813 | for i := 0 to drives.Count - 1 do |
||
1814 | begin |
||
1815 | result := result + TRbDrive(drives.Items[i]).GetSize; |
||
1816 | end; |
||
1817 | finally |
||
1818 | drives.Free; |
||
1819 | end; |
||
1820 | end; |
||
1821 | |||
1822 | class function TRecycleBinManager.RecycleBinPossible(Drive: Char): boolean; |
||
1823 | var |
||
1824 | typ: Integer; |
||
1825 | begin |
||
1826 | // Does the drive exist? |
||
1827 | // see http://www.delphipraxis.net/post2933.html |
||
1828 | result := GetLogicalDrives and (1 shl DriveLetterToDriveNumber(Drive)) <> 0; |
||
1829 | if not result then exit; |
||
1830 | |||
1831 | // Is it a fixed drive? (Only they can have recycle bins) |
||
1832 | // TODO: is that correct, or can also have other drive types have recyclers? |
||
1833 | typ := GetDriveType(PChar(Drive + ':\')); |
||
1834 | result := typ = DRIVE_FIXED; |
||
1835 | end; |
||
1836 | |||
1837 | class function TRecycleBinManager.RecyclerGetCurrentIconString: string; |
||
1838 | begin |
||
1839 | if OwnRecyclersEmpty then |
||
1840 | result := RecyclerGetEmptyIconString |
||
1841 | else |
||
1842 | result := RecyclerGetFullIconString; |
||
1843 | end; |
||
1844 | |||
1845 | class function TRecycleBinManager.RecyclerGetDefaultIconString: string; |
||
1846 | var |
||
1847 | reg: TRegistry; |
||
1848 | begin |
||
1849 | // Please note: The "default" icon is not always the icon of the |
||
1850 | // current recycle bin in its current state (full, empty) |
||
1851 | // At Windows 95b, the registry value actually did change every time the |
||
1852 | // recycle bin state did change, but at Windows 2000 I could not see any |
||
1853 | // update, even after reboot. So, the registry value is possible fixed as |
||
1854 | // default = empty on newer OS versions. |
||
1855 | |||
1856 | reg := TRegistry.Create; |
||
1857 | try |
||
1858 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1859 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)+'\DefaultIcon') then |
||
1860 | begin |
||
1861 | result := reg.ReadString(''); |
||
1862 | reg.CloseKey; |
||
1863 | end; |
||
1864 | finally |
||
1865 | reg.Free; |
||
1866 | end; |
||
1867 | end; |
||
1868 | |||
1869 | class function TRecycleBinManager.RecyclerGetEmptyIconString: string; |
||
1870 | var |
||
1871 | reg: TRegistry; |
||
1872 | begin |
||
1873 | reg := TRegistry.Create; |
||
1874 | try |
||
1875 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1876 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)+'\DefaultIcon') then |
||
1877 | begin |
||
1878 | result := reg.ReadString('Empty'); |
||
1879 | reg.CloseKey; |
||
1880 | end; |
||
1881 | finally |
||
1882 | reg.Free; |
||
1883 | end; |
||
1884 | end; |
||
1885 | |||
1886 | class function TRecycleBinManager.RecyclerGetFullIconString: string; |
||
1887 | var |
||
1888 | reg: TRegistry; |
||
1889 | begin |
||
1890 | reg := TRegistry.Create; |
||
1891 | try |
||
1892 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1893 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)+'\DefaultIcon') then |
||
1894 | begin |
||
1895 | result := reg.ReadString('Full'); |
||
1896 | reg.CloseKey; |
||
1897 | end; |
||
1898 | finally |
||
1899 | reg.Free; |
||
1900 | end; |
||
1901 | end; |
||
1902 | |||
1903 | class function TRecycleBinManager.RecyclerGetInfoTip: string; |
||
1904 | var |
||
1905 | reg: TRegistry; |
||
1906 | begin |
||
1907 | // Not available in some older versions of Windows |
||
1908 | |||
1909 | reg := TRegistry.Create; |
||
1910 | try |
||
1911 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1912 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)) then |
||
1913 | begin |
||
1914 | result := reg.ReadString('InfoTip'); |
||
1915 | result := DecodeReferenceString(result); |
||
1916 | |||
1917 | reg.CloseKey; |
||
1918 | end; |
||
1919 | finally |
||
1920 | reg.Free; |
||
1921 | end; |
||
1922 | end; |
||
1923 | |||
1924 | class function TRecycleBinManager.RecyclerGetIntroText: string; |
||
1925 | var |
||
1926 | reg: TRegistry; |
||
1927 | begin |
||
1928 | // Not available in some older versions of Windows |
||
1929 | |||
1930 | reg := TRegistry.Create; |
||
1931 | try |
||
1932 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1933 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)) then |
||
1934 | begin |
||
1935 | result := reg.ReadString('IntroText'); |
||
1936 | result := DecodeReferenceString(result); |
||
1937 | |||
1938 | reg.CloseKey; |
||
1939 | end; |
||
1940 | finally |
||
1941 | reg.Free; |
||
1942 | end; |
||
1943 | end; |
||
1944 | |||
1945 | class function TRecycleBinManager.RecyclerGetName: string; |
||
1946 | var |
||
1947 | reg: TRegistry; |
||
1948 | begin |
||
1949 | // Windows 95b: |
||
1950 | // Change of CLSID\{645FF040-5081-101B-9F08-00AA002F954E} will change the desktop name of the recycle bin. |
||
1951 | |||
1952 | // Windows 2000: If LocalizedString is available, the 3rd argument will be parsed |
||
1953 | // (if the third argument will removed, it will be read out from the DLL resource string automatically) |
||
1954 | |||
1955 | reg := TRegistry.Create; |
||
1956 | try |
||
1957 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1958 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)) then |
||
1959 | begin |
||
1960 | if reg.ValueExists('LocalizedString') then |
||
1961 | begin |
||
1962 | result := reg.ReadString('LocalizedString'); |
||
1963 | result := DecodeReferenceString(result); |
||
1964 | end |
||
1965 | else |
||
1966 | begin |
||
1967 | result := reg.ReadString(''); |
||
1968 | end; |
||
1969 | |||
1970 | reg.CloseKey; |
||
1971 | end; |
||
1972 | finally |
||
1973 | reg.Free; |
||
1974 | end; |
||
1975 | end; |
||
1976 | |||
1977 | class function TRecycleBinManager.RecyclerEmptyEventGetName: string; |
||
1978 | var |
||
1979 | reg: TRegistry; |
||
1980 | begin |
||
1981 | reg := TRegistry.Create; |
||
1982 | try |
||
1983 | reg.RootKey := HKEY_CURRENT_USER; |
||
1984 | if reg.OpenKeyReadOnly('AppEvents\EventLabels\EmptyRecycleBin') then |
||
1985 | begin |
||
1986 | result := reg.ReadString(''); |
||
1987 | reg.CloseKey; |
||
1988 | end; |
||
1989 | finally |
||
1990 | reg.Free; |
||
1991 | end; |
||
1992 | end; |
||
1993 | |||
1994 | class function TRecycleBinManager.RecyclerEmptyEventGetCurrentSound: string; |
||
1995 | begin |
||
1996 | result := RecyclerEmptyEventGetSound('.Current'); |
||
1997 | end; |
||
1998 | |||
1999 | class function TRecycleBinManager.RecyclerEmptyEventGetDefaultSound: string; |
||
2000 | begin |
||
2001 | result := RecyclerEmptyEventGetSound('.Default'); |
||
2002 | end; |
||
2003 | |||
2004 | class procedure TRecycleBinManager.RecyclerEmptyEventGetSoundCategories(AStringList: TStringList); |
||
2005 | var |
||
2006 | reg: TRegistry; |
||
2007 | begin |
||
2008 | reg := TRegistry.Create; |
||
2009 | try |
||
2010 | reg.RootKey := HKEY_CURRENT_USER; |
||
2011 | if reg.OpenKeyReadOnly('AppEvents\Schemes\Apps\Explorer\EmptyRecycleBin') then |
||
2012 | begin |
||
2013 | reg.GetKeyNames(AStringList); |
||
2014 | reg.CloseKey; |
||
2015 | end; |
||
2016 | finally |
||
2017 | reg.Free; |
||
2018 | end; |
||
2019 | end; |
||
2020 | |||
2021 | class function TRecycleBinManager.RecyclerEmptyEventGetSound(ACategory: string): string; |
||
2022 | var |
||
2023 | reg: TRegistry; |
||
2024 | resourcestring |
||
2025 | LNG_SND_EVENT_CAT_ERROR = 'The category "%s" is not available for the notification event "%s".'; |
||
2026 | begin |
||
2027 | // Outputs an filename or empty string for no sound defined. |
||
2028 | |||
2029 | reg := TRegistry.Create; |
||
2030 | try |
||
2031 | reg.RootKey := HKEY_CURRENT_USER; |
||
2032 | if reg.OpenKeyReadOnly('AppEvents\Schemes\Apps\Explorer\EmptyRecycleBin') then |
||
2033 | begin |
||
2034 | if reg.OpenKeyReadOnly(ACategory) then |
||
2035 | begin |
||
2036 | result := reg.ReadString(''); |
||
2037 | reg.CloseKey; |
||
2038 | end |
||
2039 | else |
||
2040 | raise EEventCategoryNotDefined.CreateFmt(LNG_SND_EVENT_CAT_ERROR, [ACategory, 'EmptyRecycleBin']); |
||
2041 | reg.CloseKey; |
||
2042 | end; |
||
2043 | finally |
||
2044 | reg.Free; |
||
2045 | end; |
||
2046 | end; |
||
2047 | |||
2048 | class function TRecycleBinManager.RecyclerQueryFunctionAvailable: boolean; |
||
2049 | var |
||
2050 | RBHandle: THandle; |
||
2051 | SHQueryRecycleBin: TSHQueryRecycleBin; |
||
2052 | begin |
||
2053 | // Windows 95 without Internet Explorer 4 has no SHQueryRecycleBinA. |
||
2054 | RBHandle := LoadLibrary(shell32); |
||
2055 | try |
||
2056 | if RBHandle <> 0 then |
||
2057 | begin |
||
2058 | SHQueryRecycleBin := GetProcAddress(RBHandle, C_SHQueryRecycleBin); |
||
2059 | if not Assigned(@SHQueryRecycleBin) then |
||
2060 | begin |
||
2061 | FreeLibrary(RBHandle); |
||
2062 | RBHandle := 0; |
||
2063 | end; |
||
2064 | end; |
||
2065 | |||
2066 | result := RBHandle <> 0; |
||
2067 | finally |
||
2068 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
||
2069 | end; |
||
2070 | end; |
||
2071 | |||
2072 | class function TRecycleBinManager.RecyclerAddFileOrFolder(FileOrFolder: string; confirmation: boolean=false): boolean; |
||
2073 | var |
||
2074 | Operation: TSHFileOpStruct; |
||
2075 | begin |
||
2076 | // Template: http://www.dsdt.info/tipps/?id=116 |
||
2077 | with Operation do |
||
2078 | begin |
||
2079 | Wnd := hInstance; // OK? |
||
2080 | wFunc := FO_DELETE; |
||
2081 | pFrom := PChar(FileOrFolder + #0); |
||
2082 | pTo := nil; |
||
2083 | fFlags := FOF_ALLOWUNDO; |
||
2084 | if not confirmation then fFlags := fFlags or FOF_NOCONFIRMATION; |
||
2085 | end; |
||
2086 | Result := SHFileOperation(Operation) = 0; |
||
2087 | end; |
||
2088 | |||
2089 | class function TRecycleBinManager.RecyclerGroupPolicyNoRecycleFiles: GPOLICYBOOL; |
||
2090 | var |
||
2091 | reg: TRegistry; |
||
2092 | begin |
||
2093 | result := gpUndefined; |
||
2094 | |||
2095 | reg := TRegistry.Create; |
||
2096 | try |
||
2097 | // If a value is set in HKEY_LOCAL_MACHINE, it will be prefered, |
||
2098 | // even if gpedit.msc shows "Not configured"! |
||
2099 | {$IFDEF GroupPolicyAcceptHKLMTrick} |
||
2100 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
2101 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2102 | begin |
||
2103 | if reg.ValueExists('NoRecycleFiles') then |
||
2104 | begin |
||
2105 | if reg.ReadBool('NoRecycleFiles') then |
||
2106 | result := gpEnabled |
||
2107 | else |
||
2108 | result := gpDisabled; |
||
2109 | Exit; |
||
2110 | end; |
||
2111 | reg.CloseKey; |
||
2112 | end; |
||
2113 | {$ENDIF} |
||
2114 | |||
2115 | reg.RootKey := HKEY_CURRENT_USER; |
||
2116 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2117 | begin |
||
2118 | if reg.ValueExists('NoRecycleFiles') then |
||
2119 | begin |
||
2120 | if reg.ReadBool('NoRecycleFiles') then |
||
2121 | result := gpEnabled |
||
2122 | else |
||
2123 | result := gpDisabled; |
||
2124 | end; |
||
2125 | reg.CloseKey; |
||
2126 | end; |
||
2127 | finally |
||
2128 | reg.Free; |
||
2129 | end; |
||
2130 | end; |
||
2131 | |||
2132 | class function TRecycleBinManager.RecyclerGroupPolicyConfirmFileDelete: GPOLICYBOOL; |
||
2133 | var |
||
2134 | reg: TRegistry; |
||
2135 | begin |
||
2136 | result := gpUndefined; |
||
2137 | reg := TRegistry.Create; |
||
2138 | try |
||
2139 | // If a value is set in HKEY_LOCAL_MACHINE, it will be prefered, |
||
2140 | // even if gpedit.msc shows "Not configured"! |
||
2141 | {$IFDEF GroupPolicyAcceptHKLMTrick} |
||
2142 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
2143 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2144 | begin |
||
2145 | if reg.ValueExists('ConfirmFileDelete') then |
||
2146 | begin |
||
2147 | if reg.ReadBool('ConfirmFileDelete') then |
||
2148 | result := gpEnabled |
||
2149 | else |
||
2150 | result := gpDisabled; |
||
2151 | Exit; |
||
2152 | end; |
||
2153 | reg.CloseKey; |
||
2154 | end; |
||
2155 | {$ENDIF} |
||
2156 | |||
2157 | reg.RootKey := HKEY_CURRENT_USER; |
||
2158 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2159 | begin |
||
2160 | if reg.ValueExists('ConfirmFileDelete') then |
||
2161 | begin |
||
2162 | if reg.ReadBool('ConfirmFileDelete') then |
||
2163 | result := gpEnabled |
||
2164 | else |
||
2165 | result := gpDisabled; |
||
2166 | end; |
||
2167 | reg.CloseKey; |
||
2168 | end; |
||
2169 | finally |
||
2170 | reg.Free; |
||
2171 | end; |
||
2172 | end; |
||
2173 | |||
2174 | class function TRecycleBinManager.RecyclerGroupPolicyRecycleBinSize: integer; |
||
2175 | var |
||
2176 | reg: TRegistry; |
||
2177 | begin |
||
2178 | result := -1; |
||
2179 | reg := TRegistry.Create; |
||
2180 | try |
||
2181 | // If a value is set in HKEY_LOCAL_MACHINE, it will be prefered, |
||
2182 | // even if gpedit.msc shows "Not configured"! |
||
2183 | {$IFDEF GroupPolicyAcceptHKLMTrick} |
||
2184 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
2185 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2186 | begin |
||
2187 | if reg.ValueExists('RecycleBinSize') then |
||
2188 | begin |
||
2189 | result := reg.ReadInteger('RecycleBinSize'); |
||
2190 | Exit; |
||
2191 | end; |
||
2192 | reg.CloseKey; |
||
2193 | end; |
||
2194 | {$ENDIF} |
||
2195 | |||
2196 | reg.RootKey := HKEY_CURRENT_USER; |
||
2197 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2198 | begin |
||
2199 | if reg.ValueExists('RecycleBinSize') then |
||
2200 | begin |
||
2201 | result := reg.ReadInteger('RecycleBinSize'); |
||
2202 | end; |
||
2203 | reg.CloseKey; |
||
2204 | end; |
||
2205 | finally |
||
2206 | reg.Free; |
||
2207 | end; |
||
2208 | end; |
||
2209 | |||
2210 | class function TRecycleBinManager.RecyclerConfirmationDialogEnabled: boolean; |
||
2211 | var |
||
2212 | gp: GPOLICYBOOL; |
||
2213 | begin |
||
2214 | gp := RecyclerGroupPolicyConfirmFileDelete; |
||
2215 | if gp <> gpUndefined then |
||
2216 | begin |
||
2217 | result := gp = gpEnabled; |
||
2218 | end |
||
2219 | else |
||
2220 | begin |
||
2221 | result := RecyclerShellStateConfirmationDialogEnabled; |
||
2222 | end; |
||
2223 | end; |
||
2224 | |||
2225 | class function TRecycleBinManager.RecyclerShellStateConfirmationDialogEnabled: boolean; |
||
2226 | var |
||
2227 | lpss: SHELLSTATE; |
||
2228 | bNoConfirmRecycle: boolean; |
||
2229 | |||
2230 | PSHGetSettings: TSHGetSettings; |
||
2231 | RBHandle: THandle; |
||
2232 | |||
2233 | reg: TRegistry; |
||
2234 | rbuf: array[0..255] of byte; |
||
2235 | begin |
||
2236 | PSHGetSettings := nil; |
||
2237 | result := false; // Avoid warning message |
||
2238 | |||
2239 | RBHandle := LoadLibrary(shell32); |
||
2240 | try |
||
2241 | if RBHandle <> 0 then |
||
2242 | begin |
||
2243 | PSHGetSettings := GetProcAddress(RBHandle, C_SHGetSettings); |
||
2244 | if not Assigned(@PSHGetSettings) then |
||
2245 | begin |
||
2246 | FreeLibrary(RBHandle); |
||
2247 | RBHandle := 0; |
||
2248 | end; |
||
2249 | end; |
||
2250 | |||
2251 | if (RBHandle <> 0) and Assigned(PSHGetSettings) then |
||
2252 | begin |
||
2253 | ZeroMemory(@lpss, SizeOf(lpss)); |
||
2254 | PSHGetSettings(lpss, SSF_NOCONFIRMRECYCLE); |
||
2255 | bNoConfirmRecycle := (lpss.Flags1 and 4) = 4; // fNoConfirmRecycle |
||
2256 | |||
2257 | result := not bNoConfirmRecycle; |
||
2258 | end |
||
2259 | else |
||
2260 | begin |
||
2261 | reg := TRegistry.Create; |
||
2262 | try |
||
2263 | // API function call failed. Probably because Windows is too old. |
||
2264 | // Try to read out from registry. |
||
2265 | // The 3rd bit of the 5th byte of "ShellState" is the value |
||
2266 | // of "fNoConfirmRecycle". |
||
2267 | |||
2268 | reg.RootKey := HKEY_CURRENT_USER; |
||
2269 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Explorer') then |
||
2270 | begin |
||
2271 | ZeroMemory(@rbuf, SizeOf(rbuf)); |
||
2272 | reg.ReadBinaryData('ShellState', rbuf, SizeOf(rbuf)); |
||
2273 | |||
2274 | // Lese 3tes Bit vom 5ten Byte |
||
2275 | bNoConfirmRecycle := ((rbuf[4] and 4) = 4); |
||
2276 | result := not bNoConfirmRecycle; |
||
2277 | |||
2278 | reg.CloseKey; |
||
2279 | end |
||
2280 | else |
||
2281 | begin |
||
2282 | raise EAPICallError.CreateFmt(LNG_API_CALL_ERROR, [Format(LNG_NOT_CALLABLE, [C_SHGetSettings])]); |
||
2283 | end; |
||
2284 | finally |
||
2285 | reg.Free; |
||
2286 | end; |
||
2287 | end; |
||
2288 | finally |
||
2289 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
||
2290 | end; |
||
2291 | end; |
||
2292 | |||
2293 | class procedure TRecycleBinManager.RecyclerConfirmationDialogSetEnabled(NewSetting: boolean); |
||
2294 | var |
||
2295 | lpss: SHELLSTATE; |
||
2296 | |||
2297 | PSHGetSetSettings: TSHGetSetSettings; |
||
2298 | RBHandle: THandle; |
||
2299 | |||
2300 | reg: TRegistry; |
||
2301 | rbuf: array[0..255] of byte; |
||
2302 | |||
2303 | dwResult: DWORD; |
||
2304 | begin |
||
2305 | PSHGetSetSettings := nil; |
||
2306 | |||
2307 | RBHandle := LoadLibrary(shell32); |
||
2308 | try |
||
2309 | if RBHandle <> 0 then |
||
2310 | begin |
||
2311 | PSHGetSetSettings := GetProcAddress(RBHandle, C_SHGetSetSettings); |
||
2312 | if not Assigned(@PSHGetSetSettings) then |
||
2313 | begin |
||
2314 | FreeLibrary(RBHandle); |
||
2315 | RBHandle := 0; |
||
2316 | end; |
||
2317 | end; |
||
2318 | |||
2319 | if (RBHandle <> 0) and Assigned(PSHGetSetSettings) then |
||
2320 | begin |
||
2321 | ZeroMemory(@lpss, SizeOf(lpss)); |
||
2322 | |||
2323 | PSHGetSetSettings(lpss, SSF_NOCONFIRMRECYCLE, false); // Get |
||
2324 | |||
2325 | // Set 3rd bit equal to NewSetting |
||
2326 | if NewSetting then |
||
2327 | lpss.Flags1 := lpss.Flags1 or $00000004 |
||
2328 | else |
||
2329 | lpss.Flags1 := lpss.Flags1 and $FFFFFFFB; |
||
2330 | |||
2331 | PSHGetSetSettings(lpss, SSF_NOCONFIRMRECYCLE, true); // Set |
||
2332 | |||
2333 | SendMessageTimeout ( |
||
2334 | HWND_BROADCAST, WM_SETTINGCHANGE, |
||
2335 | 0, lParam (pChar ('ShellState')), |
||
2336 | SMTO_ABORTIFHUNG, 5000, dwResult |
||
2337 | ); |
||
2338 | end |
||
2339 | else |
||
2340 | begin |
||
2341 | reg := TRegistry.Create; |
||
2342 | try |
||
2343 | // API function call failed. Probably because Windows is too old. |
||
2344 | // Try to read out from registry. |
||
2345 | // The 3rd bit of the 5th byte of "ShellState" is the value |
||
2346 | // of "fNoConfirmRecycle". |
||
2347 | |||
2348 | reg.RootKey := HKEY_CURRENT_USER; |
||
2349 | if reg.OpenKey('Software\Microsoft\Windows\CurrentVersion\Explorer', false) then |
||
2350 | begin |
||
2351 | ZeroMemory(@rbuf, SizeOf(rbuf)); |
||
2352 | |||
2353 | reg.ReadBinaryData('ShellState', rbuf, SizeOf(rbuf)); // Get |
||
2354 | |||
2355 | // Set 3rd bit equal to NewSetting |
||
2356 | if NewSetting then |
||
2357 | rbuf[4] := rbuf[4] or $04 |
||
2358 | else |
||
2359 | rbuf[4] := rbuf[4] and $FB; |
||
2360 | |||
2361 | reg.WriteBinaryData('ShellState', rbuf, SizeOf(rbuf)); // Set |
||
2362 | |||
2363 | SendMessageTimeout ( |
||
2364 | HWND_BROADCAST, WM_SETTINGCHANGE, |
||
2365 | 0, lParam (pChar ('ShellState')), |
||
2366 | SMTO_ABORTIFHUNG, 5000, dwResult |
||
2367 | ); |
||
2368 | |||
2369 | reg.CloseKey; |
||
2370 | end |
||
2371 | else |
||
2372 | begin |
||
2373 | raise EAPICallError.CreateFmt(LNG_API_CALL_ERROR, [Format(LNG_NOT_CALLABLE, [C_SHGetSetSettings])]); |
||
2374 | end; |
||
2375 | finally |
||
2376 | reg.Free; |
||
2377 | end; |
||
2378 | end; |
||
2379 | finally |
||
2380 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
||
2381 | end; |
||
2382 | end; |
||
2383 | |||
2384 | { TRbRecycleBinItem } |
||
2385 | |||
2386 | function TRbRecycleBinItem.GetSource: string; |
||
2387 | begin |
||
2388 | {$IFDEF UNICODE} |
||
2389 | result := SourceUnicode; |
||
2390 | {$ELSE} |
||
2391 | result := SourceAnsi; |
||
2392 | {$ENDIF} |
||
2393 | end; |
||
2394 | |||
2395 | end. |