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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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86 | daniel-mar | 93 | property Source: string read GetSource; // will bei either ANSI or Unicode, depending on the Delphi version |
75 | daniel-mar | 94 | property ID: string read FID; |
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 | |||
88 | daniel-mar | 101 | // Attention: There are no official API calls. The delete and recover |
75 | daniel-mar | 102 | // functions might fail and/or damage the shell cache. Handle with care! |
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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89 | daniel-mar | 164 | FDriveLetter: AnsiChar; |
75 | daniel-mar | 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 |
89 | daniel-mar | 181 | constructor Create(ADriveLetter: AnsiChar); |
75 | daniel-mar | 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 | |||
89 | daniel-mar | 186 | property DriveLetter: AnsiChar read FDriveLetter; |
75 | daniel-mar | 187 | property VolumeGUID: TGUID read GetVolumeGUID; |
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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89 | daniel-mar | 204 | class function RecycleBinPossible(Drive: AnsiChar): boolean; static; |
75 | daniel-mar | 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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89 | daniel-mar | 367 | TGetVolumeNameForVolumeMountPointA = function(lpszVolumeMountPoint: LPCSTR; lpszVolumeName: LPSTR; cchBufferLength: DWORD): BOOL; stdcall; |
75 | daniel-mar | 368 | TSHEmptyRecycleBin = function(Wnd: HWND; pszRootPath: PChar; dwFlags: DWORD): HRESULT; stdcall; |
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 | |
90 | daniel-mar | 372 | function WideCharArrayToWideString(x: array of WideChar): WideString; |
373 | var |
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374 | i: integer; |
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375 | begin |
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376 | // In x86, the "cast" works with WideString. |
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377 | // In x64, it does not work (outputs empty string, without compiler warning!) |
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378 | // So, we created this fake-cast |
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379 | SetLength(result, Length(x)); |
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380 | for i := 0 to Length(x)-1 do |
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381 | result[i+1] := x[i]; |
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382 | end; |
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383 | |||
384 | function AnsiCharArrayToWideString(x: array of AnsiChar): WideString; |
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385 | var |
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386 | i: integer; |
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387 | begin |
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388 | SetLength(result, Length(x)); |
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389 | for i := 0 to Length(x)-1 do |
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390 | result[i+1] := WideChar(x[i]); |
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391 | end; |
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392 | |||
88 | daniel-mar | 393 | procedure AnsiRemoveNulChars(var s: AnsiString); |
394 | begin |
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395 | while (Length(s) > 0) and (s[Length(s)] = #0) do |
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396 | s := Copy(s, 1, Length(s)-1); |
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397 | end; |
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398 | |||
399 | procedure UnicodeRemoveNulChars(var s: WideString); |
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400 | begin |
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401 | while (Length(s) > 0) and (s[Length(s)] = #0) do |
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402 | s := Copy(s, 1, Length(s)-1); |
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403 | end; |
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404 | |||
89 | daniel-mar | 405 | function GetDriveGUID(driveLetter: AnsiChar; var guid: TGUID): DWORD; |
75 | daniel-mar | 406 | var |
407 | Buffer: array[0..50] of AnsiChar; |
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408 | x: string; |
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89 | daniel-mar | 409 | PGetVolumeNameForVolumeMountPointA: TGetVolumeNameForVolumeMountPointA; |
75 | daniel-mar | 410 | RBHandle: THandle; |
411 | begin |
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412 | RBHandle := LoadLibrary(kernel32); |
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413 | try |
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414 | if RBHandle <> 0 then |
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415 | begin |
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89 | daniel-mar | 416 | PGetVolumeNameForVolumeMountPointA := GetProcAddress(RBHandle, C_GetVolumeNameForVolumeMountPoint); |
417 | if not Assigned(@PGetVolumeNameForVolumeMountPointA) then |
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75 | daniel-mar | 418 | begin |
419 | result := GetLastError; |
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420 | FreeLibrary(RBHandle); |
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421 | RBHandle := 0; |
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422 | end |
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423 | else |
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424 | begin |
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89 | daniel-mar | 425 | if PGetVolumeNameForVolumeMountPointA(PAnsiChar(AnsiString(driveLetter+':\')), Buffer, SizeOf(Buffer)) then |
75 | daniel-mar | 426 | begin |
89 | daniel-mar | 427 | x := string(buffer); |
75 | daniel-mar | 428 | x := copy(x, 11, 38); |
429 | guid := StringToGUID(x); |
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430 | result := ERROR_SUCCESS; |
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431 | end |
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432 | else |
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433 | result := GetLastError; |
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434 | end; |
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435 | end |
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436 | else result := GetLastError; |
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437 | finally |
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438 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
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439 | end; |
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440 | end; |
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441 | |||
442 | function FileTimeToDateTime(FileTime: FILETIME): TDateTime; |
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443 | {$IFDEF FILETIME_DELPHI_CODE} |
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444 | var |
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445 | SystemTime: TSystemTime; |
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446 | nowUTC: TDateTime; |
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447 | gmtDifference: int64; |
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448 | begin |
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449 | GetSystemTime(SystemTime); |
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450 | with SystemTime do |
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451 | begin |
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452 | // http://www.delphipraxis.net/post340194.html#34019 |
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453 | nowUTC := EncodeDate(wYear, wMonth, wDay) + |
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454 | EncodeTime(wHour, wMinute, wSecond, wMilliseconds); |
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455 | end; |
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456 | |||
457 | gmtDifference := datetimetounix(nowUTC) - datetimetounix(Now); |
||
458 | |||
459 | // http://www.e-fense.com/helix/Docs/Recycler_Bin_Record_Reconstruction.pdf states: |
||
460 | // UnixTime = 0.0000001 * NTTime + 11644473600 |
||
461 | // This is wrong! The correct formula is: |
||
462 | // UnixTime = 0.0000001 * NTTime - 11644473600 + c * 3600 |
||
463 | // c = GMT-Difference (MEZ = 1) inclusive daylight saving time (+3600 seconds) |
||
464 | result := unixtodatetime(round(0.0000001 * int64(FileTime)) - 11644473600 - gmtDifference); |
||
465 | {$ELSE} |
||
466 | var |
||
467 | LocalTime: TFileTime; |
||
468 | DOSTime: Integer; |
||
469 | begin |
||
470 | FileTimeToLocalFileTime(FileTime, LocalTime); |
||
471 | FileTimeToDosDateTime(LocalTime, LongRec(DOSTime).Hi, LongRec(DOSTime).Lo); |
||
472 | Result := FileDateToDateTime(DOSTime); |
||
473 | {$ENDIF} |
||
474 | end; |
||
475 | |||
476 | function DeleteDirectory(const Name: string): boolean; |
||
477 | var |
||
478 | F: TSearchRec; |
||
479 | begin |
||
480 | result := true; |
||
481 | if FindFirst(IncludeTrailingPathDelimiter(Name) + '*', faAnyFile, F) = 0 then |
||
482 | begin |
||
483 | try |
||
484 | repeat |
||
485 | if F.Attr and faDirectory <> 0 then |
||
486 | begin |
||
487 | if (F.Name <> '.') and (F.Name <> '..') then |
||
488 | begin |
||
489 | result := result and DeleteDirectory(IncludeTrailingPathDelimiter(Name) + F.Name); |
||
490 | end; |
||
491 | end |
||
492 | else |
||
493 | begin |
||
494 | if not DeleteFile(IncludeTrailingPathDelimiter(Name) + F.Name) then result := false; |
||
495 | end; |
||
496 | until FindNext(F) <> 0; |
||
497 | finally |
||
498 | FindClose(F); |
||
499 | end; |
||
500 | if not RemoveDir(Name) then result := false; |
||
501 | end; |
||
502 | end; |
||
503 | |||
89 | daniel-mar | 504 | function DriveLetterToDriveNumber(driveLetter: AnsiChar): integer; |
75 | daniel-mar | 505 | var |
506 | tmp: string; |
||
507 | begin |
||
89 | daniel-mar | 508 | tmp := LowerCase(string(driveLetter)); |
75 | daniel-mar | 509 | result := Ord(tmp[1])-Ord('a'); |
510 | end; |
||
511 | |||
512 | function GetStringFromDLL(filename: string; num: integer): string; |
||
513 | const |
||
514 | // Source: http://www.eggheadcafe.com/forumarchives/vcmfc/sep2005/post23917443.asp |
||
515 | MAX_BUF = 4097; // OK? |
||
516 | var |
||
517 | hLib: THandle; |
||
518 | buf: array[0..MAX_BUF] of char; |
||
519 | begin |
||
520 | hLib := LoadLibrary(PChar(filename)); |
||
521 | try |
||
522 | LoadString(hLib, num, buf, sizeof(buf)); |
||
523 | result := buf; |
||
524 | finally |
||
525 | FreeLibrary(hLib); |
||
526 | end; |
||
527 | end; |
||
528 | |||
529 | function ExpandEnvStr(const szInput: string): string; |
||
530 | const |
||
531 | MAXSIZE = 32768; // laut PSDK sind 32k das Maximum |
||
532 | begin |
||
533 | // Source: http://www.delphi-library.de/topic_Umgebungsvariable+in+einem+String+aufloesen_20516,0.html |
||
534 | SetLength(Result,MAXSIZE); |
||
535 | SetLength(Result,ExpandEnvironmentStrings(pchar(szInput), |
||
536 | @Result[1],length(Result))-1); //-1 um abschließendes #0 zu verwerfen |
||
537 | end; |
||
538 | |||
539 | function DecodeReferenceString(s: string): string; |
||
540 | var |
||
541 | dll, id, lang, cache: string; |
||
542 | sl, sl2: tstringlist; |
||
543 | begin |
||
544 | // Beispiele |
||
545 | // Papierkorb -- Windows 95 |
||
546 | // @C:\WINNT\system32\shell32.dll,-8964@1031,Papierkorb -- Windows 2000 |
||
547 | |||
548 | if Copy(s, 1, 1) = '@' then |
||
549 | begin |
||
550 | // Referenz auf eine DLL |
||
551 | // @<dll>,-<id>[@<lang>][,<cache>] |
||
552 | |||
553 | sl := TStringList.Create; |
||
554 | try |
||
555 | // '@' am Anfang entfernen |
||
556 | s := Copy(s, 2, length(s)-1); |
||
557 | |||
558 | // Nach ',' auftrennen |
||
559 | // sl[0] --> dll |
||
560 | // sl[1] --> -id@lang |
||
561 | // sl[2] --> cache |
||
562 | sl.CommaText := s; |
||
563 | |||
564 | if sl.Count > 2 then |
||
565 | begin |
||
566 | // Das Ergebnis ist bereits im Klartext vorhanden und muss nicht extrahiert werden |
||
567 | // Ist bei Windows 2000 der Fall |
||
568 | cache := sl[2]; |
||
569 | result := cache; |
||
570 | exit; |
||
571 | end; |
||
572 | |||
573 | if sl.Count > 1 then |
||
574 | begin |
||
575 | dll := sl[0]; |
||
576 | |||
577 | sl2 := TStringList.Create; |
||
578 | try |
||
579 | // Nach '@' auftrennen |
||
580 | // sl2[0] --> id |
||
581 | // sl2[1] --> lang |
||
582 | sl2.CommaText := StringReplace(sl[1], '@', ',', [rfReplaceAll]); |
||
583 | |||
584 | id := sl2[0]; |
||
585 | |||
586 | if sl2.Count > 1 then |
||
587 | begin |
||
588 | // ToDo: In Zukunft beachten, sofern möglich |
||
589 | lang := sl2[1]; |
||
590 | end; |
||
591 | |||
592 | // Umgebungsvariablen erkennen und Minuszeichen entfernen |
||
593 | result := GetStringFromDLL(ExpandEnvStr(dll), -StrToInt(id)); |
||
594 | finally |
||
595 | sl2.Free; |
||
596 | end; |
||
597 | end |
||
598 | else |
||
599 | begin |
||
600 | // Zu wenige Informationen! |
||
601 | |||
602 | result := ''; |
||
603 | end; |
||
604 | finally |
||
605 | sl.Free; |
||
606 | end; |
||
607 | end |
||
608 | else |
||
609 | begin |
||
610 | // Kein Hinweis auf eine Referenz |
||
611 | result := s; |
||
612 | end; |
||
613 | end; |
||
614 | |||
615 | function GPBoolToString(value: GPOLICYBOOL): string; |
||
616 | begin |
||
617 | case value of |
||
618 | gpUndefined: result := 'Not configured'; |
||
619 | gpEnabled: result := 'Enabled'; |
||
620 | gpDisabled: result := 'Disabled'; |
||
621 | end; |
||
622 | end; |
||
623 | |||
624 | { TRbRecycleBin } |
||
625 | |||
626 | constructor TRbRecycleBin.Create(AFileOrDirectory: string; ASID: string=''); |
||
627 | begin |
||
628 | inherited Create; |
||
629 | |||
630 | FFileOrDirectory := AFileOrDirectory; |
||
631 | FSID := ASID; |
||
76 | daniel-mar | 632 | TolerantReading := true; |
75 | daniel-mar | 633 | end; |
634 | |||
635 | // TODO: also a function that tests if the data files are still existing |
||
636 | function TRbRecycleBin.CheckIndexes(slErrors: TStrings): boolean; |
||
637 | |||
638 | procedure _Assert(assertion: boolean; msg: string; args: array of const); |
||
639 | begin |
||
640 | if not assertion then |
||
641 | begin |
||
642 | slErrors.Add(Format(msg, args)); |
||
643 | result := false; |
||
644 | end; |
||
645 | end; |
||
646 | |||
647 | procedure _HandleIndexFile(AFile: string); |
||
648 | var |
||
649 | fs: TFileStream; |
||
76 | daniel-mar | 650 | infoHdr: TRbInfoHeader; |
75 | daniel-mar | 651 | resourcestring |
652 | LNG_IDXERR_VISTA_FILESIZE = '%s: Vista index file has wrong size'; |
||
653 | LNG_IDXERR_INFO_RECSIZE_UNEXPECTED = '%s: record size unexpected'; |
||
654 | LNG_IDXERR_INFO_UNEXPECTED_EOF = '%s: file size wrong'; |
||
655 | begin |
||
656 | fs := TFileStream.Create(AFile, fmOpenRead); |
||
657 | try |
||
658 | fs.Seek(0, soFromBeginning); |
||
659 | |||
660 | if SameText(copy(ExtractFileName(AFile), 1, 2), '$I') then |
||
661 | begin |
||
662 | _Assert(fs.Size = SizeOf(TRbVistaItem), LNG_IDXERR_VISTA_FILESIZE, [AFile]); |
||
663 | end |
||
76 | daniel-mar | 664 | else if SameText(ExtractFileName(AFile), 'INFO') or |
665 | SameText(ExtractFileName(AFile), 'INFO2') then |
||
75 | daniel-mar | 666 | begin |
667 | fs.ReadBuffer(infoHdr, SizeOf(infoHdr)); |
||
76 | daniel-mar | 668 | _Assert((infoHdr.recordLength = SizeOf(TRbInfoRecordA)) or |
669 | (infoHdr.recordLength = SizeOf(TRbInfoRecordW)), LNG_IDXERR_INFO_RECSIZE_UNEXPECTED, [AFile]); |
||
75 | daniel-mar | 670 | _Assert((fs.Size-fs.Position) mod infoHdr.recordLength = 0, LNG_IDXERR_INFO_UNEXPECTED_EOF, [AFile]); |
76 | daniel-mar | 671 | // TODO: we can also check infoHdr.totalSize or infoHdr.totalEntries |
75 | daniel-mar | 672 | end |
76 | daniel-mar | 673 | else Assert(false); |
75 | daniel-mar | 674 | |
675 | // TODO: we could check each item for invalid stuff...? |
||
676 | finally |
||
677 | FreeAndNil(fs); |
||
678 | end; |
||
679 | end; |
||
680 | |||
681 | procedure _HandleVistaDir(ADirectory: string); |
||
682 | var |
||
683 | SR: TSearchRec; |
||
684 | begin |
||
685 | ADirectory := IncludeTrailingPathDelimiter(ADirectory); |
||
686 | |||
687 | if FindFirst(ADirectory + '$I*', faAnyFile, SR) = 0 then |
||
688 | begin |
||
689 | repeat |
||
690 | _HandleIndexFile(ADirectory+sr.Name); |
||
691 | until FindNext(SR) <> 0; |
||
692 | end; |
||
693 | FindClose(SR); |
||
694 | end; |
||
695 | |||
696 | begin |
||
697 | result := true; |
||
698 | |||
699 | if DirectoryExists(FFileOrDirectory) then // Vista, as well as directories with INFO and INFO2 |
||
700 | begin |
||
701 | _HandleVistaDir(FFileOrDirectory); |
||
702 | |||
703 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2') then |
||
704 | begin |
||
705 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2'); |
||
706 | end; |
||
707 | |||
708 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO') then |
||
709 | begin |
||
710 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO'); |
||
711 | end; |
||
712 | end |
||
713 | else if FileExists(FFileOrDirectory) then |
||
714 | begin |
||
715 | _HandleIndexFile(FFileOrDirectory); |
||
716 | end |
||
717 | else raise Exception.CreateFmt(LNG_FILE_NOT_FOUND, [FFileOrDirectory]); |
||
718 | end; |
||
719 | |||
720 | function TRbRecycleBin.GetItem(id: string): TRbRecycleBinItem; |
||
721 | |||
722 | procedure _HandleIndexFile(AFile: string); |
||
723 | var |
||
724 | fs: TFileStream; |
||
76 | daniel-mar | 725 | infoHdr: TRbInfoHeader; |
75 | daniel-mar | 726 | testItem: TRbRecycleBinItem; |
727 | begin |
||
728 | fs := TFileStream.Create(AFile, fmOpenRead); |
||
729 | try |
||
730 | fs.Seek(0, soFromBeginning); |
||
731 | |||
82 | daniel-mar | 732 | if SameText(ExtractFileName(AFile), '$I'+id) then |
75 | daniel-mar | 733 | begin |
82 | daniel-mar | 734 | result := TRbVistaItem.Create(fs, AFile, id); |
75 | daniel-mar | 735 | end |
736 | else |
||
737 | begin |
||
738 | fs.ReadBuffer(infoHdr, SizeOf(infoHdr)); |
||
739 | case infoHdr.recordLength of |
||
76 | daniel-mar | 740 | SizeOf(TRbInfoRecordA): |
75 | daniel-mar | 741 | begin |
742 | while fs.Position < fs.size do |
||
743 | begin |
||
76 | daniel-mar | 744 | testItem := TRbInfoAItem.Create(fs, AFile); |
75 | daniel-mar | 745 | if testItem.ID = id then |
746 | begin |
||
747 | result := testItem; |
||
748 | break; |
||
749 | end; |
||
750 | end; |
||
751 | end; |
||
76 | daniel-mar | 752 | SizeOf(TRbInfoRecordW): |
75 | daniel-mar | 753 | begin |
754 | while fs.Position < fs.size do |
||
755 | begin |
||
76 | daniel-mar | 756 | testItem := TRbInfoWItem.Create(fs, AFile); |
75 | daniel-mar | 757 | if testItem.ID = id then |
758 | begin |
||
759 | result := testItem; |
||
760 | break; |
||
761 | end; |
||
762 | end; |
||
763 | end |
||
764 | else |
||
765 | begin |
||
766 | raise Exception.CreateFmt(LNG_INVALID_INFO_FORMAT, [AFile]); |
||
767 | end; |
||
768 | end; |
||
769 | end; |
||
770 | finally |
||
771 | FreeAndNil(fs); |
||
772 | end; |
||
773 | end; |
||
774 | |||
775 | procedure _HandleVistaDir(ADirectory: string); |
||
776 | var |
||
777 | SR: TSearchRec; |
||
778 | fs: TFileStream; |
||
779 | id: string; |
||
780 | begin |
||
781 | ADirectory := IncludeTrailingPathDelimiter(ADirectory); |
||
782 | |||
783 | if FileExists(ADirectory + '$I' + id) then |
||
784 | begin |
||
785 | fs := TFileStream.Create(ADirectory+sr.Name, fmOpenRead); |
||
786 | try |
||
787 | fs.Seek(0, soFromBeginning); |
||
788 | result := TRbVistaItem.Create(fs, ADirectory+sr.Name, id); |
||
789 | finally |
||
790 | FreeAndNil(fs); |
||
791 | end; |
||
792 | end; |
||
793 | end; |
||
794 | |||
795 | begin |
||
796 | result := nil; |
||
797 | |||
798 | if DirectoryExists(FFileOrDirectory) then // Vista, as well as directories with INFO and INFO2 |
||
799 | begin |
||
800 | _HandleVistaDir(FFileOrDirectory); |
||
801 | if Assigned(result) then exit; |
||
802 | |||
803 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2') then |
||
804 | begin |
||
805 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2'); |
||
806 | if Assigned(result) then exit; |
||
807 | end; |
||
808 | |||
809 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO') then |
||
810 | begin |
||
811 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO'); |
||
812 | if Assigned(result) then exit; |
||
813 | end; |
||
814 | end |
||
815 | else if FileExists(FFileOrDirectory) then |
||
816 | begin |
||
817 | _HandleIndexFile(FFileOrDirectory); |
||
818 | if Assigned(result) then exit; |
||
819 | end |
||
820 | else raise Exception.CreateFmt(LNG_FILE_NOT_FOUND, [FFileOrDirectory]); |
||
821 | end; |
||
822 | |||
823 | procedure TRbRecycleBin.ListItems(list: TObjectList{TRbRecycleBinItem}); |
||
824 | |||
825 | procedure _HandleIndexFile(AFile: string); |
||
826 | var |
||
827 | fs: TFileStream; |
||
76 | daniel-mar | 828 | infoHdr: TRbInfoHeader; |
75 | daniel-mar | 829 | testID: string; |
76 | daniel-mar | 830 | wTest: TRbInfoWItem; |
831 | bakPosition: int64; |
||
75 | daniel-mar | 832 | begin |
833 | fs := TFileStream.Create(AFile, fmOpenRead); |
||
834 | try |
||
835 | fs.Seek(0, soFromBeginning); |
||
836 | |||
82 | daniel-mar | 837 | if SameText(copy(ExtractFileName(AFile), 1, 2), '$I') then |
75 | daniel-mar | 838 | begin |
82 | daniel-mar | 839 | testID := copy(testID, 3, Length(testID)-2); |
75 | daniel-mar | 840 | list.Add(TRbVistaItem.Create(fs, AFile, testID)); |
841 | end |
||
842 | else |
||
843 | begin |
||
76 | daniel-mar | 844 | if TolerantReading then |
845 | begin |
||
846 | // This is a special treatment how to recover data from an INFO/INFO2 file |
||
847 | // which was corrupted by an incompatible multiboot configuration. |
||
848 | // Example: |
||
849 | // - Win95 without IE4 and WinNT4 both write into the INFO file. But Win95 appends the ANSI record and WinNT appends an Unicode record. |
||
850 | // - 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. |
||
851 | fs.ReadBuffer(infoHdr, SizeOf(infoHdr)); |
||
852 | while fs.Position < fs.size do |
||
75 | daniel-mar | 853 | begin |
76 | daniel-mar | 854 | // Can we actually read a Unicode record? |
855 | if fs.Position + SizeOf(TRbInfoRecordW) <= fs.Size then |
||
75 | daniel-mar | 856 | begin |
76 | daniel-mar | 857 | // Try to read the Unicode record and check if it is valid |
858 | // In case it is no Unicode record, then the Unicode part will be the |
||
859 | // ANSI source name of the next record. In this case, we won't get |
||
860 | // a ':' at the Unicode string. |
||
861 | bakPosition := fs.Position; |
||
862 | wTest := TRbInfoWItem.Create(fs, AFile); |
||
863 | if Copy(wTest.SourceUnicode, 2, 1) = ':' then |
||
864 | begin |
||
865 | // Yes, it is a valid Unicode record. |
||
866 | list.Add(wTest); |
||
867 | end |
||
868 | else |
||
869 | begin |
||
870 | // No, it is not a valid Unicode record. Jump back, and we need |
||
871 | // to assume that the following record will be a valid ANSI record. |
||
872 | fs.Position := bakPosition; |
||
873 | list.Add(TRbInfoAItem.Create(fs, AFile)); |
||
874 | end; |
||
875 | end |
||
876 | else |
||
877 | begin |
||
878 | // No, there is not enough space left for an Unicode record. |
||
879 | // So we assume that the following record will be a valid ANSI record. |
||
880 | list.Add(TRbInfoAItem.Create(fs, AFile)); |
||
75 | daniel-mar | 881 | end; |
882 | end; |
||
76 | daniel-mar | 883 | end |
884 | else |
||
885 | begin |
||
886 | // This is the code for non-tolerant reading of the records. |
||
887 | fs.ReadBuffer(infoHdr, SizeOf(infoHdr)); |
||
888 | case infoHdr.recordLength of |
||
889 | SizeOf(TRbInfoRecordA): |
||
75 | daniel-mar | 890 | begin |
76 | daniel-mar | 891 | while fs.Position < fs.size do |
892 | begin |
||
893 | list.Add(TRbInfoAItem.Create(fs, AFile)); |
||
894 | end; |
||
75 | daniel-mar | 895 | end; |
76 | daniel-mar | 896 | SizeOf(TRbInfoRecordW): |
897 | begin |
||
898 | while fs.Position < fs.size do |
||
899 | begin |
||
900 | list.Add(TRbInfoWItem.Create(fs, AFile)); |
||
901 | end; |
||
902 | end |
||
903 | else |
||
904 | begin |
||
905 | raise Exception.CreateFmt(LNG_INVALID_INFO_FORMAT, [AFile]); |
||
906 | end; |
||
75 | daniel-mar | 907 | end; |
908 | end; |
||
909 | end; |
||
910 | finally |
||
911 | FreeAndNil(fs); |
||
912 | end; |
||
913 | end; |
||
914 | |||
915 | procedure _HandleVistaDir(ADirectory: string); |
||
916 | var |
||
917 | SR: TSearchRec; |
||
918 | fs: TFileStream; |
||
919 | id: string; |
||
920 | begin |
||
921 | ADirectory := IncludeTrailingPathDelimiter(ADirectory); |
||
922 | |||
923 | if FindFirst(ADirectory + '$I*', faAnyFile, SR) = 0 then |
||
924 | begin |
||
925 | repeat |
||
926 | id := sr.Name; |
||
927 | { 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 |
||
928 | id := Copy(id, 3, Length(id)-2); |
||
929 | |||
930 | fs := TFileStream.Create(ADirectory+sr.Name, fmOpenRead); |
||
931 | try |
||
932 | fs.Seek(0, soFromBeginning); |
||
933 | list.Add(TRbVistaItem.Create(fs, ADirectory+sr.Name, id)); |
||
934 | finally |
||
935 | FreeAndNil(fs); |
||
936 | end; |
||
937 | until FindNext(SR) <> 0; |
||
938 | end; |
||
939 | FindClose(SR); |
||
940 | end; |
||
941 | |||
942 | begin |
||
943 | if DirectoryExists(FFileOrDirectory) then // Vista, as well as directories with INFO and INFO2 |
||
944 | begin |
||
945 | _HandleVistaDir(FFileOrDirectory); |
||
946 | |||
947 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2') then |
||
948 | begin |
||
949 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2'); |
||
950 | end; |
||
951 | |||
952 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO') then |
||
953 | begin |
||
954 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO'); |
||
955 | end; |
||
956 | end |
||
957 | else if FileExists(FFileOrDirectory) then |
||
958 | begin |
||
76 | daniel-mar | 959 | _HandleIndexFile(FFileOrDirectory); // Either INFO, or INFO2, or a single Vista index file |
75 | daniel-mar | 960 | end |
961 | else raise Exception.CreateFmt(LNG_FILE_NOT_FOUND, [FFileOrDirectory]); |
||
962 | end; |
||
963 | |||
964 | { TRbDrive } |
||
965 | |||
966 | procedure TRbDrive.CheckDriveExisting; |
||
967 | begin |
||
968 | // Does the drive exist? |
||
969 | // see http://www.delphipraxis.net/post2933.html |
||
78 | daniel-mar | 970 | if not GetLogicalDrives and (1 shl DriveNumber) <> 0 then |
75 | daniel-mar | 971 | begin |
89 | daniel-mar | 972 | raise EInvalidDrive.CreateFmt(LNG_DRIVE_NOT_EXISTING, [UpperCase(string(FDriveLetter))+':']); |
75 | daniel-mar | 973 | end; |
974 | end; |
||
975 | |||
89 | daniel-mar | 976 | constructor TRbDrive.Create(ADriveLetter: AnsiChar); |
75 | daniel-mar | 977 | begin |
978 | inherited Create; |
||
979 | |||
980 | FDriveLetter := ADriveLetter; |
||
981 | CheckDriveExisting; |
||
982 | end; |
||
983 | |||
78 | daniel-mar | 984 | function TRbDrive.DiskSize: integer; |
985 | begin |
||
986 | result := SysUtils.DiskSize(DriveNumber+1 {0 is current, 1 is A}) div (1024*1024); |
||
987 | end; |
||
988 | |||
989 | function TRbDrive.DriveNumber: integer; |
||
990 | begin |
||
991 | result := DriveLetterToDriveNumber(FDriveLetter); |
||
992 | end; |
||
993 | |||
75 | daniel-mar | 994 | function TRbDrive.GetAPIInfo: TSHQueryRBInfo; |
995 | var |
||
996 | PSHQueryRecycleBin: TSHQueryRecycleBin; |
||
997 | RBHandle: THandle; |
||
998 | res: HRESULT; |
||
999 | Path: string; |
||
1000 | begin |
||
1001 | Path := FDriveLetter + ':\'; |
||
1002 | |||
1003 | // Ref: http://www.delphipraxis.net/post1291.html |
||
1004 | |||
1005 | RBHandle := LoadLibrary(shell32); |
||
1006 | try |
||
1007 | PSHQueryRecycleBin := nil; |
||
1008 | if RBHandle <> 0 then |
||
1009 | begin |
||
1010 | PSHQueryRecycleBin := GetProcAddress(RBHandle, C_SHQueryRecycleBin); |
||
1011 | if not Assigned(@PSHQueryRecycleBin) then |
||
1012 | begin |
||
1013 | FreeLibrary(RBHandle); |
||
1014 | RBHandle := 0; |
||
1015 | end; |
||
1016 | end; |
||
1017 | |||
1018 | FillChar(result, SizeOf(TSHQueryRBInfo), 0); |
||
1019 | result.cbSize := SizeOf(TSHQueryRBInfo); |
||
1020 | |||
1021 | if (RBHandle <> 0) and Assigned(PSHQueryRecycleBin) then |
||
1022 | begin |
||
1023 | res := PSHQueryRecycleBin(PChar(Path), result); |
||
1024 | // if Succeeded(res) then |
||
1025 | if res = S_OK then |
||
1026 | begin |
||
1027 | // Alles OK, unser result hat nun die gewünschten Daten. |
||
1028 | end |
||
1029 | else |
||
1030 | begin |
||
1031 | // Since Windows Vista, SHQueryRecycleBin will fail with E_FAIL (80004005) |
||
1032 | // if Path is a floppy or CD drive... |
||
1033 | raise EAPICallError.CreateFmt(LNG_API_CALL_ERROR, [Format(LNG_ERROR_CODE, [C_SHQueryRecycleBin, Path, '0x'+IntToHex(res, 2*SizeOf(HRESULT))])]); |
||
1034 | end; |
||
1035 | end |
||
1036 | else |
||
1037 | raise EAPICallError.CreateFmt(LNG_API_CALL_ERROR, [Format(LNG_NOT_CALLABLE, [C_SHQueryRecycleBin])]); |
||
1038 | finally |
||
1039 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
||
1040 | end; |
||
1041 | end; |
||
1042 | |||
78 | daniel-mar | 1043 | function TRbDrive.GetMaxPercentUsage: Extended; |
75 | daniel-mar | 1044 | var |
78 | daniel-mar | 1045 | abs: integer; // in MB |
1046 | rel: integer; // in % (0-100) |
||
1047 | gpSetting: integer; |
||
1048 | const |
||
1049 | DEFAULT_PERCENT = 10; // Windows 95 default |
||
1050 | begin |
||
1051 | gpSetting := TRecycleBinManager.RecyclerGroupPolicyRecycleBinSize; |
||
1052 | if gpSetting <> -1 then |
||
1053 | result := gpSetting / 100 |
||
1054 | else if TRecycleBinManager.UsesGlobalSettings then |
||
1055 | result := TRecycleBinManager.GetGlobalMaxPercentUsage / 100 |
||
1056 | else if OldCapacityPercent(rel) then |
||
1057 | begin |
||
1058 | result := rel / 100; |
||
1059 | end |
||
1060 | else if NewCapacityAbsolute(abs) then |
||
1061 | begin |
||
1062 | result := abs / DiskSize; |
||
1063 | end |
||
1064 | else |
||
1065 | begin |
||
1066 | result := DEFAULT_PERCENT / 100; |
||
1067 | end; |
||
1068 | end; |
||
1069 | |||
1070 | function TRbDrive.GetMaxAbsoluteUsage: integer; |
||
1071 | var |
||
1072 | abs: integer; // in MB |
||
1073 | rel: integer; // in % (0-100) |
||
1074 | gpSetting: integer; |
||
1075 | const |
||
1076 | DEFAULT_PERCENT = 10; // Windows 95 default |
||
1077 | begin |
||
1078 | gpSetting := TRecycleBinManager.RecyclerGroupPolicyRecycleBinSize; |
||
1079 | if gpSetting <> -1 then |
||
1080 | result := Ceil(gpSetting/100 * DiskSize) |
||
1081 | else if TRecycleBinManager.UsesGlobalSettings then |
||
1082 | result := Ceil(TRecycleBinManager.GetGlobalMaxPercentUsage/100 * DiskSize) |
||
1083 | else if NewCapacityAbsolute(abs) then |
||
1084 | begin |
||
1085 | result := abs; |
||
1086 | end |
||
1087 | else if OldCapacityPercent(rel) then |
||
1088 | begin |
||
1089 | result := Ceil(rel/100 * DiskSize); |
||
1090 | end |
||
1091 | else |
||
1092 | begin |
||
1093 | result := Ceil(DEFAULT_PERCENT/100 * DiskSize); |
||
1094 | end; |
||
1095 | end; |
||
1096 | |||
1097 | function TRbDrive.OldCapacityPercent(var res: integer): boolean; |
||
1098 | var |
||
75 | daniel-mar | 1099 | reg: TRegistry; |
1100 | purgeInfo: TRbWin95PurgeInfo; |
||
1101 | begin |
||
78 | daniel-mar | 1102 | if Win32MajorVersion >= 6 then |
1103 | begin |
||
1104 | // Only available till Windows XP |
||
1105 | result := false; |
||
1106 | exit; |
||
1107 | end; |
||
75 | daniel-mar | 1108 | |
78 | daniel-mar | 1109 | result := false; |
1110 | |||
75 | daniel-mar | 1111 | reg := TRegistry.Create; |
1112 | try |
||
1113 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1114 | |||
1115 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1116 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1117 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
1118 | begin |
||
89 | daniel-mar | 1119 | if reg.OpenKeyReadOnly(string(FDriveLetter)) then |
75 | daniel-mar | 1120 | begin |
1121 | if reg.ValueExists('Percent') then |
||
1122 | begin |
||
1123 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
1124 | |||
78 | daniel-mar | 1125 | res := reg.ReadInteger('Percent'); |
1126 | result := true; |
||
75 | daniel-mar | 1127 | end; |
1128 | end |
||
1129 | else |
||
1130 | begin |
||
1131 | if reg.ValueExists('PurgeInfo') then |
||
1132 | begin |
||
1133 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
1134 | |||
1135 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
||
1136 | |||
78 | daniel-mar | 1137 | res := purgeInfo.percentDrive[FDriveLetter]; |
1138 | result := true; |
||
75 | daniel-mar | 1139 | end; |
1140 | end; |
||
1141 | |||
1142 | reg.CloseKey; |
||
1143 | end; |
||
1144 | finally |
||
1145 | reg.Free; |
||
1146 | end; |
||
1147 | end; |
||
1148 | |||
78 | daniel-mar | 1149 | function TRbDrive.NewCapacityAbsolute(var res: integer): boolean; |
75 | daniel-mar | 1150 | var |
78 | daniel-mar | 1151 | reg: TRegistry; |
75 | daniel-mar | 1152 | begin |
78 | daniel-mar | 1153 | if Win32MajorVersion < 6 then |
1154 | begin |
||
1155 | // Only available since Windows Vista |
||
1156 | result := false; |
||
1157 | exit; |
||
1158 | end; |
||
75 | daniel-mar | 1159 | |
78 | daniel-mar | 1160 | result := false; |
1161 | |||
1162 | reg := TRegistry.Create; |
||
1163 | try |
||
1164 | reg.RootKey := HKEY_CURRENT_USER; |
||
1165 | |||
1166 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Explorer\BitBucket\Volume') then |
||
1167 | begin |
||
1168 | // Windows Vista and upwards |
||
1169 | if reg.OpenKeyReadOnly(GUIDToString(VolumeGUID)) then |
||
1170 | begin |
||
1171 | res := reg.ReadInteger('MaxCapacity'); // in MB |
||
1172 | result := true; |
||
1173 | end; |
||
1174 | reg.CloseKey; |
||
1175 | end; |
||
1176 | finally |
||
1177 | reg.Free; |
||
1178 | end; |
||
75 | daniel-mar | 1179 | end; |
1180 | |||
1181 | function TRbDrive.GetNukeOnDelete: boolean; |
||
1182 | var |
||
1183 | reg: TRegistry; |
||
1184 | purgeInfo: TRbWin95PurgeInfo; |
||
1185 | const |
||
78 | daniel-mar | 1186 | RES_DEFAULT = false; // Windows 95 default |
75 | daniel-mar | 1187 | begin |
78 | daniel-mar | 1188 | if TRecycleBinManager.RecyclerGroupPolicyNoRecycleFiles = gpEnabled then |
1189 | result := true |
||
1190 | else if TRecycleBinManager.UsesGlobalSettings then |
||
1191 | result := TRecycleBinManager.GetGlobalNukeOnDelete |
||
1192 | else |
||
1193 | begin |
||
1194 | result := RES_DEFAULT; |
||
75 | daniel-mar | 1195 | |
78 | daniel-mar | 1196 | reg := TRegistry.Create; |
1197 | try |
||
1198 | reg.RootKey := HKEY_CURRENT_USER; |
||
75 | daniel-mar | 1199 | |
78 | daniel-mar | 1200 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Explorer\BitBucket\Volume') then |
75 | daniel-mar | 1201 | begin |
78 | daniel-mar | 1202 | // Windows Vista and upwards |
1203 | if reg.OpenKeyReadOnly(GUIDToString(VolumeGUID)) then |
||
75 | daniel-mar | 1204 | begin |
1205 | result := reg.ReadBool('NukeOnDelete'); |
||
1206 | end; |
||
78 | daniel-mar | 1207 | reg.CloseKey; |
75 | daniel-mar | 1208 | end |
1209 | else |
||
1210 | begin |
||
78 | daniel-mar | 1211 | reg.RootKey := HKEY_LOCAL_MACHINE; |
1212 | |||
1213 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1214 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1215 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
75 | daniel-mar | 1216 | begin |
89 | daniel-mar | 1217 | if reg.OpenKeyReadOnly(string(FDriveLetter)) then |
78 | daniel-mar | 1218 | begin |
1219 | if reg.ValueExists('NukeOnDelete') then |
||
1220 | begin |
||
1221 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
75 | daniel-mar | 1222 | |
78 | daniel-mar | 1223 | result := reg.ReadBool('NukeOnDelete'); |
1224 | end; |
||
1225 | end |
||
1226 | else |
||
1227 | begin |
||
1228 | if reg.ValueExists('PurgeInfo') then |
||
1229 | begin |
||
1230 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
75 | daniel-mar | 1231 | |
78 | daniel-mar | 1232 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
1233 | |||
1234 | result := ((purgeInfo.NukeOnDeleteBits shr DriveNumber) and 1) = 1; |
||
1235 | end; |
||
1236 | end; |
||
1237 | |||
1238 | reg.CloseKey; |
||
75 | daniel-mar | 1239 | end; |
1240 | end; |
||
78 | daniel-mar | 1241 | finally |
1242 | reg.Free; |
||
75 | daniel-mar | 1243 | end; |
1244 | end; |
||
1245 | end; |
||
1246 | |||
1247 | function TRbDrive.GetNumItems: int64; |
||
1248 | begin |
||
1249 | result := GetAPIInfo.i64NumItems; |
||
1250 | end; |
||
1251 | |||
1252 | function TRbDrive.GetSize: int64; |
||
1253 | begin |
||
1254 | result := GetAPIInfo.i64Size; |
||
1255 | end; |
||
1256 | |||
1257 | function TRbDrive.GetVolumeGUID: TGUID; |
||
1258 | begin |
||
1259 | if GetDriveGUID(FDriveLetter, result) <> ERROR_SUCCESS then |
||
1260 | begin |
||
1261 | result := NULL_GUID; |
||
1262 | end; |
||
1263 | end; |
||
1264 | |||
77 | daniel-mar | 1265 | function TRbDrive.GetVolumeGUIDAvailable: boolean; |
1266 | begin |
||
1267 | result := not IsEqualGUID(VolumeGUID, NULL_GUID); |
||
1268 | end; |
||
1269 | |||
75 | daniel-mar | 1270 | function TRbDrive.IsEmpty: boolean; |
1271 | begin |
||
1272 | result := GetNumItems = 0; |
||
1273 | end; |
||
1274 | |||
1275 | function TRbDrive.IsFAT: boolean; |
||
1276 | var |
||
1277 | Dummy2: DWORD; |
||
1278 | Dummy3: DWORD; |
||
1279 | FileSystem: array[0..MAX_PATH] of char; |
||
1280 | VolumeName: array[0..MAX_PATH] of char; |
||
1281 | s: string; |
||
1282 | begin |
||
1283 | s := FDriveLetter + DriveDelim + PathDelim; // ohne die Auslagerung in einen String kommt es zu einer AV in ntdll |
||
1284 | GetVolumeInformation(PChar(s), VolumeName, |
||
1285 | SizeOf(VolumeName), nil, Dummy2, Dummy3, FileSystem, SizeOf(FileSystem)); |
||
1286 | result := uppercase(copy(FileSystem, 0, 3)) = 'FAT'; |
||
1287 | end; |
||
1288 | |||
1289 | procedure TRbDrive.ListRecycleBins(list: TObjectList{TRbRecycleBin}; UserSID: string=''); |
||
1290 | |||
1291 | procedure _AddSIDFolders(dir: string; wholeFolder: boolean); |
||
1292 | var |
||
1293 | SR: TSearchRec; |
||
1294 | begin |
||
1295 | dir := IncludeTrailingPathDelimiter(dir); |
||
1296 | if FindFirst(dir+'S-*', faAnyFile, SR) = 0 then |
||
1297 | begin |
||
1298 | try |
||
1299 | repeat |
||
1300 | if (SR.Name = '.') or (SR.Name = '..') or not DirectoryExists(dir + SR.Name) then continue; |
||
1301 | |||
1302 | if wholeFolder then |
||
1303 | begin |
||
1304 | // Vista |
||
1305 | list.Add(TRbRecycleBin.Create(dir+SR.Name, SR.Name)); |
||
1306 | end |
||
1307 | else |
||
1308 | begin |
||
1309 | // Win95 .. WinXP |
||
1310 | if FileExists(IncludeTrailingPathDelimiter(dir+SR.Name) + 'INFO2') then |
||
1311 | list.Add(TRbRecycleBin.Create(IncludeTrailingPathDelimiter(dir+SR.Name) + 'INFO2', SR.Name)); |
||
1312 | if FileExists(IncludeTrailingPathDelimiter(dir+SR.Name) + 'INFO') then |
||
1313 | list.Add(TRbRecycleBin.Create(IncludeTrailingPathDelimiter(dir+SR.Name) + 'INFO', SR.Name)); |
||
1314 | end; |
||
1315 | until FindNext(SR) <> 0; |
||
1316 | finally |
||
1317 | FindClose(SR); |
||
1318 | end; |
||
1319 | end; |
||
1320 | end; |
||
1321 | |||
1322 | var |
||
1323 | dir: string; |
||
1324 | begin |
||
1325 | // Find recyclers from Windows Vista or higher |
||
1326 | |||
1327 | if IsFAT then |
||
1328 | begin |
||
1329 | dir := FDriveLetter + DriveDelim + PathDelim + '$recycle.bin' + PathDelim; |
||
1330 | if DirectoryExists(dir) then |
||
1331 | begin |
||
1332 | list.Add(TRbRecycleBin.Create(dir)); |
||
1333 | end; |
||
1334 | end |
||
1335 | else |
||
1336 | begin |
||
1337 | if UserSID <> '' then |
||
1338 | begin |
||
1339 | dir := FDriveLetter + DriveDelim + PathDelim + '$recycle.bin' + PathDelim + UserSID + PathDelim; |
||
1340 | if DirectoryExists(dir) then |
||
1341 | begin |
||
1342 | list.Add(TRbRecycleBin.Create(dir, UserSID)); |
||
1343 | end; |
||
1344 | end |
||
1345 | else |
||
1346 | begin |
||
1347 | _AddSIDFolders(FDriveLetter + DriveDelim + PathDelim + '$recycle.bin', true); |
||
1348 | end; |
||
1349 | end; |
||
1350 | |||
1351 | // Find recyclers from Windows before Vista |
||
1352 | |||
1353 | if IsFAT then |
||
1354 | begin |
||
1355 | dir := FDriveLetter + DriveDelim + PathDelim + 'Recycled' + PathDelim; |
||
1356 | |||
1357 | // Both "recycle bins" are possible if you have multiboot (but do overwrite themselfes if you empty them) |
||
1358 | if FileExists(dir + 'INFO2') then |
||
76 | daniel-mar | 1359 | list.Add(TRbRecycleBin.Create(dir + 'INFO2')); // Windows 95 with Internet Explorer 4 Extension or higher Windows 9x versions |
75 | daniel-mar | 1360 | if FileExists(dir + 'INFO') then |
1361 | list.Add(TRbRecycleBin.Create(dir + 'INFO')); // Windows 95 native |
||
1362 | end |
||
1363 | else |
||
1364 | begin |
||
1365 | if UserSID <> '' then |
||
1366 | begin |
||
1367 | dir := FDriveLetter + DriveDelim + PathDelim + 'Recycler' + PathDelim + UserSID + PathDelim; |
||
1368 | |||
1369 | if FileExists(dir + 'INFO2') then |
||
76 | daniel-mar | 1370 | list.Add(TRbRecycleBin.Create(dir + 'INFO2', UserSID)); // Windows 2000+ |
75 | daniel-mar | 1371 | if FileExists(dir + 'INFO') then |
1372 | list.Add(TRbRecycleBin.Create(dir + 'INFO', UserSID)); // Windows NT 4 |
||
1373 | end |
||
1374 | else |
||
1375 | begin |
||
1376 | _AddSIDFolders(FDriveLetter + DriveDelim + PathDelim + 'Recycler', false); |
||
1377 | end; |
||
1378 | end; |
||
1379 | end; |
||
1380 | |||
76 | daniel-mar | 1381 | { TRbInfoAItem } |
75 | daniel-mar | 1382 | |
76 | daniel-mar | 1383 | procedure TRbInfoAItem.ReadFromStream(stream: TStream); |
75 | daniel-mar | 1384 | var |
76 | daniel-mar | 1385 | r: TRbInfoRecordA; |
75 | daniel-mar | 1386 | begin |
1387 | stream.ReadBuffer(r, SizeOf(r)); |
||
1388 | |||
1389 | FSourceDrive := Chr(Ord('A') + r.sourceDrive); |
||
1390 | |||
76 | daniel-mar | 1391 | // Win95 with IE4 and Win2000+: |
1392 | // Wenn ein Eintrag aus der INFO/INFO2 gelöscht wird, dann wird das erste Byte |
||
1393 | // von sourceAnsi auf Null gesetzt, damit die ganze INFO/INFO2 Datei nicht |
||
1394 | // ständig neu geschrieben werden muss (so wie es bei Win95 und WinNT4 der Fall war). |
||
1395 | // Wir lesen den Eintrag trotzdem, da unsere Software ja auch zu forensischen |
||
1396 | // Zwecken eingesetzt werden soll. |
||
75 | daniel-mar | 1397 | if r.sourceAnsi[0] = #0 then |
1398 | begin |
||
1399 | FRemovedEntry := true; |
||
89 | daniel-mar | 1400 | r.sourceAnsi[0] := AnsiChar(FSourceDrive); |
75 | daniel-mar | 1401 | end; |
1402 | |||
1403 | FSourceAnsi := r.sourceAnsi; |
||
90 | daniel-mar | 1404 | FSourceUnicode := AnsiCharArrayToWideString(r.sourceAnsi); // Unicode does not exist in INFO(1) structure |
75 | daniel-mar | 1405 | FID := IntToStr(r.recordNumber); |
1406 | FDeletionTime := FileTimeToDateTime(r.deletionTime); |
||
1407 | FOriginalSize := r.originalSize; |
||
88 | daniel-mar | 1408 | |
1409 | // Remove #0 at the end. There are some bugs where #0 is added to ANSI/Unicode read paths?! (probably in the ReadVista stuff) |
||
1410 | // TODO: Instead of using this workaround, fix "SourceUnicode" and "SourceAnsi" in the first place! |
||
1411 | AnsiRemoveNulChars(FSourceAnsi); |
||
1412 | UnicodeRemoveNulChars(FSourceUnicode); |
||
75 | daniel-mar | 1413 | end; |
1414 | |||
76 | daniel-mar | 1415 | function TRbInfoAItem.DeleteFile: boolean; |
75 | daniel-mar | 1416 | var |
1417 | r: string; |
||
1418 | begin |
||
1419 | r := GetPhysicalFile; |
||
1420 | if DirectoryExists(r) then |
||
1421 | result := DeleteDirectory(r) // Usually, the old recycle bin does not allow folders. Just to be sure, we include the code. |
||
1422 | else |
||
1423 | result := SysUtils.DeleteFile(r); // TODO: geht das oder gibt es zugriffsverletzung? --> Win95: Funktioniert |
||
1424 | |||
1425 | // TODO: nun auch den eintrag aus der INFO-Datei rausschmeißen (Datei neu schreiben) |
||
1426 | end; |
||
1427 | |||
76 | daniel-mar | 1428 | function TRbInfoAItem.GetPhysicalFile: string; |
75 | daniel-mar | 1429 | begin |
1430 | if FRemovedEntry then |
||
1431 | begin |
||
1432 | result := ''; |
||
1433 | Exit; |
||
1434 | end; |
||
1435 | |||
1436 | // e.g. C:\...\DC0.doc |
||
1437 | result := IncludeTrailingPathDelimiter(ExtractFilePath(IndexFile)) + |
||
89 | daniel-mar | 1438 | 'D' + (* SourceDrive *) Source[1] + ID + ExtractFileExt(Source); |
75 | daniel-mar | 1439 | end; |
1440 | |||
76 | daniel-mar | 1441 | constructor TRbInfoAItem.Create(fs: TStream; AIndexFile: string); |
75 | daniel-mar | 1442 | begin |
1443 | inherited Create; |
||
1444 | ReadFromStream(fs); |
||
1445 | FIndexFile := AIndexFile; |
||
1446 | end; |
||
1447 | |||
76 | daniel-mar | 1448 | { TRbInfoWItem } |
75 | daniel-mar | 1449 | |
76 | daniel-mar | 1450 | procedure TRbInfoWItem.ReadFromStream(stream: TStream); |
75 | daniel-mar | 1451 | var |
76 | daniel-mar | 1452 | r: TRbInfoRecordW; |
75 | daniel-mar | 1453 | begin |
1454 | stream.ReadBuffer(r, SizeOf(r)); |
||
1455 | |||
76 | daniel-mar | 1456 | // Win95 with IE4 and Win2000+: |
1457 | // Wenn ein Eintrag aus der INFO/INFO2 gelöscht wird, dann wird das erste Byte |
||
1458 | // von sourceAnsi auf Null gesetzt, damit die ganze INFO/INFO2 Datei nicht |
||
1459 | // ständig neu geschrieben werden muss (so wie es bei Win95 und WinNT4 der Fall war). |
||
75 | daniel-mar | 1460 | // Wir lesen den Eintrag trotzdem, da unsere Software ja auch zu forensischen |
1461 | // Zwecken eingesetzt werden soll. |
||
1462 | if r.sourceAnsi[0] = #0 then |
||
1463 | begin |
||
1464 | FRemovedEntry := true; |
||
1465 | r.sourceAnsi[0] := AnsiChar(r.sourceUnicode[0]); |
||
1466 | end; |
||
1467 | |||
1468 | FSourceAnsi := r.sourceAnsi; |
||
1469 | FSourceUnicode := r.sourceUnicode; |
||
1470 | FID := IntToStr(r.recordNumber); |
||
1471 | FSourceDrive := Chr(Ord('A') + r.sourceDrive); |
||
1472 | FDeletionTime := FileTimeToDateTime(r.deletionTime); |
||
1473 | FOriginalSize := r.originalSize; |
||
88 | daniel-mar | 1474 | |
1475 | // Remove #0 at the end. There are some bugs where #0 is added to ANSI/Unicode read paths?! (probably in the ReadVista stuff) |
||
1476 | // TODO: Instead of using this workaround, fix "SourceUnicode" and "SourceAnsi" in the first place! |
||
1477 | AnsiRemoveNulChars(FSourceAnsi); |
||
1478 | UnicodeRemoveNulChars(FSourceUnicode); |
||
75 | daniel-mar | 1479 | end; |
1480 | |||
76 | daniel-mar | 1481 | function TRbInfoWItem.DeleteFile: boolean; |
75 | daniel-mar | 1482 | var |
1483 | r: string; |
||
1484 | begin |
||
1485 | r := GetPhysicalFile; |
||
1486 | if DirectoryExists(r) then |
||
1487 | result := DeleteDirectory(r) |
||
1488 | else |
||
1489 | result := SysUtils.DeleteFile(r); // TODO: geht das oder gibt es zugriffsverletzung? |
||
1490 | |||
1491 | // TODO: nun auch den eintrag aus der INFO-Datei rausschmeißen (Erstes Byte auf 0 setzen) |
||
1492 | end; |
||
1493 | |||
76 | daniel-mar | 1494 | function TRbInfoWItem.GetPhysicalFile: string; |
75 | daniel-mar | 1495 | begin |
1496 | if FRemovedEntry then |
||
1497 | begin |
||
1498 | result := ''; |
||
1499 | Exit; |
||
1500 | end; |
||
1501 | |||
76 | daniel-mar | 1502 | (* |
1503 | This is actually a bit tricky... |
||
1504 | Win95 will choose the first letter of the AnsiSource name. |
||
1505 | WinNT will choose the first letter of the UnicodeSource name. |
||
1506 | WinXP will choose the driveNumber member. |
||
1507 | |||
1508 | Windows XP is kinda buggy when it comes to changing a drive letter. |
||
1509 | For example, the drive E: was changed to K: |
||
1510 | The drive letter is 04 (E), the Source name begins with E:\ and the physical file is De0.txt . |
||
1511 | After the recycle bin is opened the first time: |
||
1512 | - The recycle bin will show the file origin as K:\ and not as E:\ |
||
1513 | - The file was renamed from De0.txt to Dk0.txt |
||
1514 | - The file can be recovered at this time |
||
1515 | When the recycle bin is closed, the INFO2 file will not be corrected (which is a bug). |
||
1516 | So, if you open the recycle bin again, the record will be marked |
||
1517 | as deleted in the INFO file (the first byte will be set to 0), |
||
1518 | because Windows searches for De0.txt and doesn't find it. |
||
1519 | |||
1520 | (This comment also applies to TRbInfoAItem.GetPhysicalFile) |
||
1521 | *) |
||
1522 | |||
75 | daniel-mar | 1523 | // e.g. C:\...\DC0.doc |
1524 | result := IncludeTrailingPathDelimiter(ExtractFilePath(IndexFile)) + |
||
76 | daniel-mar | 1525 | 'D' + SourceDrive (* SourceUnicode[1] *) + ID + ExtractFileExt(SourceUnicode); |
75 | daniel-mar | 1526 | end; |
1527 | |||
76 | daniel-mar | 1528 | constructor TRbInfoWItem.Create(fs: TStream; AIndexFile: string); |
75 | daniel-mar | 1529 | begin |
1530 | inherited Create; |
||
1531 | ReadFromStream(fs); |
||
1532 | FIndexFile := AIndexFile; |
||
1533 | end; |
||
1534 | |||
1535 | { TRbVistaItem } |
||
1536 | |||
1537 | procedure TRbVistaItem.ReadFromStream(stream: TStream); |
||
1538 | var |
||
82 | daniel-mar | 1539 | r1: TRbVistaRecord1; |
1540 | r2: TRbVistaRecord2Head; |
||
1541 | r2SourceUnicode: array of WideChar; |
||
1542 | version: DWORD; |
||
75 | daniel-mar | 1543 | begin |
82 | daniel-mar | 1544 | stream.ReadBuffer(version, SizeOf(version)); |
75 | daniel-mar | 1545 | |
82 | daniel-mar | 1546 | if version = 1 then |
1547 | begin |
||
1548 | stream.Seek(0, soBeginning); |
||
1549 | stream.ReadBuffer(r1, SizeOf(r1)); |
||
90 | daniel-mar | 1550 | FSourceAnsi := AnsiString(WideCharArrayToWideString(r1.sourceUnicode)); // Invalid chars are automatically converted into '?' |
1551 | FSourceUnicode := WideCharArrayToWideString(r1.sourceUnicode); |
||
82 | daniel-mar | 1552 | FID := ''; // will be added manually (at the constructor) |
89 | daniel-mar | 1553 | FSourceDrive := r1.sourceUnicode[1]; |
82 | daniel-mar | 1554 | FDeletionTime := FileTimeToDateTime(r1.deletionTime); |
1555 | FOriginalSize := r1.originalSize; |
||
1556 | end |
||
1557 | else if version = 2 then |
||
1558 | begin |
||
1559 | stream.Seek(0, soBeginning); |
||
1560 | stream.ReadBuffer(r2, SizeOf(r2)); |
||
1561 | |||
90 | daniel-mar | 1562 | SetLength(r2SourceUnicode, SizeOf(WideChar)*(r2.SourceCountChars-1)); |
1563 | stream.Read(r2SourceUnicode[0], SizeOf(WideChar)*(r2.sourceCountChars-1)); |
||
82 | daniel-mar | 1564 | |
90 | daniel-mar | 1565 | FSourceAnsi := AnsiString(WideCharArrayToWideString(r2sourceUnicode)); // Invalid chars are automatically converted into '?' |
1566 | FSourceUnicode := WideCharArrayToWideString(r2sourceUnicode); |
||
82 | daniel-mar | 1567 | FID := ''; // will be added manually (at the constructor) |
89 | daniel-mar | 1568 | FSourceDrive := r2sourceUnicode[1]; |
82 | daniel-mar | 1569 | FDeletionTime := FileTimeToDateTime(r2.deletionTime); |
1570 | FOriginalSize := r2.originalSize; |
||
1571 | end |
||
1572 | else |
||
1573 | begin |
||
1574 | raise Exception.CreateFmt('Invalid Vista index format version %d', [version]); |
||
1575 | end; |
||
88 | daniel-mar | 1576 | |
1577 | // Remove #0 at the end. There are some bugs where #0 is added to ANSI/Unicode read paths?! (probably in the ReadVista stuff) |
||
1578 | // TODO: Instead of using this workaround, fix "SourceUnicode" and "SourceAnsi" in the first place! |
||
1579 | AnsiRemoveNulChars(FSourceAnsi); |
||
1580 | UnicodeRemoveNulChars(FSourceUnicode); |
||
75 | daniel-mar | 1581 | end; |
1582 | |||
1583 | function TRbVistaItem.DeleteFile: boolean; |
||
1584 | var |
||
1585 | r: string; |
||
1586 | begin |
||
1587 | r := GetPhysicalFile; |
||
1588 | if DirectoryExists(r) then |
||
1589 | result := DeleteDirectory(r) |
||
1590 | else |
||
1591 | result := SysUtils.DeleteFile(r); |
||
1592 | |||
1593 | SysUtils.DeleteFile(FIndexFile); |
||
1594 | end; |
||
1595 | |||
1596 | function TRbVistaItem.GetPhysicalFile: string; |
||
1597 | begin |
||
1598 | result := FIndexFile; |
||
1599 | result := StringReplace(Result, '$I', '$R', [rfIgnoreCase]); |
||
1600 | end; |
||
1601 | |||
1602 | constructor TRbVistaItem.Create(fs: TStream; AIndexFile, AID: string); |
||
1603 | begin |
||
1604 | inherited Create; |
||
1605 | ReadFromStream(fs); |
||
1606 | FIndexFile := AIndexFile; |
||
1607 | FID := AID; |
||
1608 | end; |
||
1609 | |||
1610 | { TRecycleBinManager } |
||
1611 | |||
1612 | class function TRecycleBinManager.EmptyOwnRecyclers(flags: cardinal): boolean; |
||
1613 | var |
||
1614 | PSHEmptyRecycleBin: TSHEmptyRecycleBin; |
||
1615 | LibHandle: THandle; |
||
1616 | begin |
||
1617 | // Source: http://www.dsdt.info/tipps/?id=176 |
||
1618 | result := true; |
||
1619 | LibHandle := LoadLibrary(shell32); |
||
1620 | try |
||
1621 | if LibHandle <> 0 then |
||
1622 | begin |
||
1623 | @PSHEmptyRecycleBin := GetProcAddress(LibHandle, C_SHEmptyRecycleBinA); |
||
1624 | if @PSHEmptyRecycleBin <> nil then |
||
1625 | begin |
||
1626 | PSHEmptyRecycleBin(hInstance, nil, flags); |
||
1627 | end |
||
1628 | else |
||
1629 | result := false; |
||
1630 | end |
||
1631 | else |
||
1632 | result := false; |
||
1633 | finally |
||
1634 | @PSHEmptyRecycleBin := nil; |
||
1635 | if LibHandle <> 0 then FreeLibrary(LibHandle); |
||
1636 | end; |
||
1637 | end; |
||
1638 | |||
1639 | class function TRecycleBinManager.EmptyOwnRecyclers(sound, progress, confirmation: boolean): boolean; |
||
1640 | const |
||
1641 | SHERB_NOCONFIRMATION = $00000001; |
||
1642 | SHERB_NOPROGRESSUI = $00000002; |
||
1643 | SHERB_NOSOUND = $00000004; |
||
1644 | var |
||
1645 | flags: cardinal; |
||
1646 | begin |
||
1647 | flags := 0; |
||
1648 | |||
1649 | if not progress then |
||
1650 | flags := flags or SHERB_NOPROGRESSUI; |
||
1651 | if not confirmation then |
||
1652 | flags := flags or SHERB_NOCONFIRMATION; |
||
1653 | if not sound then |
||
1654 | flags := flags or SHERB_NOSOUND; |
||
1655 | |||
1656 | result := EmptyOwnRecyclers(flags); |
||
1657 | end; |
||
1658 | |||
1659 | class function TRecycleBinManager.GetGlobalMaxPercentUsage: integer; |
||
1660 | var |
||
1661 | reg: TRegistry; |
||
1662 | purgeInfo: TRbWin95PurgeInfo; |
||
1663 | const |
||
1664 | RES_DEFAULT = 10; // Windows 95 - Standardwert |
||
1665 | begin |
||
78 | daniel-mar | 1666 | if Win32MajorVersion >= 6 then |
1667 | begin |
||
1668 | // Only available till Windows XP |
||
1669 | result := -1; |
||
1670 | exit; |
||
1671 | end; |
||
1672 | |||
75 | daniel-mar | 1673 | result := RES_DEFAULT; |
1674 | |||
1675 | reg := TRegistry.Create; |
||
1676 | try |
||
1677 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1678 | |||
1679 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1680 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1681 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
1682 | begin |
||
1683 | if reg.ValueExists('Percent') then |
||
1684 | begin |
||
1685 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
1686 | |||
1687 | result := reg.ReadInteger('Percent'); |
||
1688 | end |
||
1689 | else if reg.ValueExists('PurgeInfo') then |
||
1690 | begin |
||
1691 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
1692 | |||
1693 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
||
1694 | result := purgeInfo.percentGlobal; |
||
1695 | end; |
||
1696 | |||
1697 | reg.CloseKey; |
||
1698 | end; |
||
1699 | finally |
||
1700 | reg.Free; |
||
1701 | end; |
||
1702 | end; |
||
1703 | |||
1704 | class function TRecycleBinManager.GetGlobalNukeOnDelete: boolean; |
||
1705 | var |
||
1706 | reg: TRegistry; |
||
1707 | purgeInfo: TRbWin95PurgeInfo; |
||
1708 | const |
||
1709 | RES_DEFAULT = false; // Windows 95 - Standardwert |
||
1710 | begin |
||
78 | daniel-mar | 1711 | if Win32MajorVersion >= 6 then |
1712 | begin |
||
1713 | // Only available till Windows XP |
||
1714 | result := false; |
||
1715 | exit; |
||
1716 | end; |
||
1717 | |||
75 | daniel-mar | 1718 | result := RES_DEFAULT; |
1719 | |||
1720 | reg := TRegistry.Create; |
||
1721 | try |
||
1722 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1723 | |||
1724 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1725 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1726 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
1727 | begin |
||
1728 | if reg.ValueExists('NukeOnDelete') then |
||
1729 | begin |
||
1730 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
1731 | |||
1732 | result := reg.ReadBool('NukeOnDelete'); |
||
1733 | end |
||
1734 | else if reg.ValueExists('PurgeInfo') then |
||
1735 | begin |
||
1736 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
1737 | |||
1738 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
||
1739 | result := (purgeInfo.NukeOnDeleteBits and $8000000) = $8000000; // bit 27 |
||
1740 | end; |
||
1741 | |||
1742 | reg.CloseKey; |
||
1743 | end; |
||
1744 | finally |
||
1745 | reg.Free; |
||
1746 | end; |
||
1747 | end; |
||
1748 | |||
76 | daniel-mar | 1749 | (* TODO: |
1750 | There are more registry values (found in WinXP): |
||
1751 | |||
1752 | BitBucket\<driveletter> |
||
1753 | VolumeSerialNumber |
||
1754 | IsUnicode |
||
1755 | |||
1756 | *) |
||
1757 | |||
75 | daniel-mar | 1758 | class function TRecycleBinManager.UsesGlobalSettings: boolean; |
1759 | var |
||
1760 | reg: TRegistry; |
||
1761 | purgeInfo: TRbWin95PurgeInfo; |
||
1762 | const |
||
1763 | RES_DEFAULT = true; // Windows 95 - Standardwert |
||
1764 | begin |
||
78 | daniel-mar | 1765 | if Win32MajorVersion >= 6 then |
1766 | begin |
||
1767 | // Only available till Windows XP |
||
1768 | result := false; |
||
1769 | exit; |
||
1770 | end; |
||
1771 | |||
75 | daniel-mar | 1772 | result := RES_DEFAULT; |
1773 | |||
1774 | reg := TRegistry.Create; |
||
1775 | try |
||
1776 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1777 | |||
1778 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1779 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1780 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
1781 | begin |
||
1782 | if reg.ValueExists('UseGlobalSettings') then |
||
1783 | begin |
||
1784 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
1785 | |||
1786 | result := reg.ReadBool('UseGlobalSettings'); |
||
1787 | end |
||
1788 | else if reg.ValueExists('PurgeInfo') then |
||
1789 | begin |
||
1790 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
1791 | |||
1792 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
||
1793 | result := purgeInfo.bGlobalSettings; |
||
1794 | end; |
||
1795 | |||
1796 | reg.CloseKey; |
||
1797 | end; |
||
1798 | finally |
||
1799 | reg.Free; |
||
1800 | end; |
||
1801 | end; |
||
1802 | |||
1803 | class procedure TRecycleBinManager.ListDrives(list: TObjectList{TRbDrive}); |
||
1804 | var |
||
89 | daniel-mar | 1805 | drive: AnsiChar; |
75 | daniel-mar | 1806 | begin |
1807 | for drive := 'A' to 'Z' do |
||
1808 | if RecycleBinPossible(drive) then |
||
1809 | list.Add(TRbDrive.Create(drive)); |
||
1810 | end; |
||
1811 | |||
1812 | class function TRecycleBinManager.OwnRecyclersEmpty: boolean; |
||
1813 | var |
||
1814 | drives: TObjectList; |
||
1815 | i: integer; |
||
1816 | begin |
||
1817 | result := true; |
||
1818 | |||
1819 | drives := TObjectList.Create(true); |
||
1820 | try |
||
1821 | ListDrives(drives); |
||
1822 | for i := 0 to drives.Count - 1 do |
||
1823 | begin |
||
1824 | result := result and TRbDrive(drives.Items[i]).IsEmpty; |
||
1825 | if not result then break; |
||
1826 | end; |
||
1827 | finally |
||
1828 | drives.Free; |
||
1829 | end; |
||
1830 | end; |
||
1831 | |||
1832 | class function TRecycleBinManager.OwnRecyclersNumItems: int64; |
||
1833 | var |
||
1834 | drives: TObjectList; |
||
1835 | i: integer; |
||
1836 | begin |
||
1837 | result := 0; |
||
1838 | |||
1839 | drives := TObjectList.Create(true); |
||
1840 | try |
||
1841 | ListDrives(drives); |
||
1842 | for i := 0 to drives.Count - 1 do |
||
1843 | begin |
||
1844 | result := result + TRbDrive(drives.Items[i]).GetNumItems; |
||
1845 | end; |
||
1846 | finally |
||
1847 | drives.Free; |
||
1848 | end; |
||
1849 | end; |
||
1850 | |||
1851 | class function TRecycleBinManager.OwnRecyclersSize: int64; |
||
1852 | var |
||
1853 | drives: TObjectList; |
||
1854 | i: integer; |
||
1855 | begin |
||
1856 | result := 0; |
||
1857 | |||
1858 | drives := TObjectList.Create(true); |
||
1859 | try |
||
1860 | ListDrives(drives); |
||
1861 | for i := 0 to drives.Count - 1 do |
||
1862 | begin |
||
1863 | result := result + TRbDrive(drives.Items[i]).GetSize; |
||
1864 | end; |
||
1865 | finally |
||
1866 | drives.Free; |
||
1867 | end; |
||
1868 | end; |
||
1869 | |||
89 | daniel-mar | 1870 | class function TRecycleBinManager.RecycleBinPossible(Drive: AnsiChar): boolean; |
75 | daniel-mar | 1871 | var |
1872 | typ: Integer; |
||
1873 | begin |
||
1874 | // Does the drive exist? |
||
1875 | // see http://www.delphipraxis.net/post2933.html |
||
1876 | result := GetLogicalDrives and (1 shl DriveLetterToDriveNumber(Drive)) <> 0; |
||
1877 | if not result then exit; |
||
1878 | |||
1879 | // Is it a fixed drive? (Only they can have recycle bins) |
||
1880 | // TODO: is that correct, or can also have other drive types have recyclers? |
||
1881 | typ := GetDriveType(PChar(Drive + ':\')); |
||
1882 | result := typ = DRIVE_FIXED; |
||
1883 | end; |
||
1884 | |||
1885 | class function TRecycleBinManager.RecyclerGetCurrentIconString: string; |
||
1886 | begin |
||
1887 | if OwnRecyclersEmpty then |
||
1888 | result := RecyclerGetEmptyIconString |
||
1889 | else |
||
1890 | result := RecyclerGetFullIconString; |
||
1891 | end; |
||
1892 | |||
1893 | class function TRecycleBinManager.RecyclerGetDefaultIconString: string; |
||
1894 | var |
||
1895 | reg: TRegistry; |
||
1896 | begin |
||
1897 | // Please note: The "default" icon is not always the icon of the |
||
1898 | // current recycle bin in its current state (full, empty) |
||
1899 | // At Windows 95b, the registry value actually did change every time the |
||
1900 | // recycle bin state did change, but at Windows 2000 I could not see any |
||
1901 | // update, even after reboot. So, the registry value is possible fixed as |
||
1902 | // default = empty on newer OS versions. |
||
1903 | |||
1904 | reg := TRegistry.Create; |
||
1905 | try |
||
1906 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1907 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)+'\DefaultIcon') then |
||
1908 | begin |
||
1909 | result := reg.ReadString(''); |
||
1910 | reg.CloseKey; |
||
1911 | end; |
||
1912 | finally |
||
1913 | reg.Free; |
||
1914 | end; |
||
1915 | end; |
||
1916 | |||
1917 | class function TRecycleBinManager.RecyclerGetEmptyIconString: string; |
||
1918 | var |
||
1919 | reg: TRegistry; |
||
1920 | begin |
||
1921 | reg := TRegistry.Create; |
||
1922 | try |
||
1923 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1924 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)+'\DefaultIcon') then |
||
1925 | begin |
||
1926 | result := reg.ReadString('Empty'); |
||
1927 | reg.CloseKey; |
||
1928 | end; |
||
1929 | finally |
||
1930 | reg.Free; |
||
1931 | end; |
||
1932 | end; |
||
1933 | |||
1934 | class function TRecycleBinManager.RecyclerGetFullIconString: string; |
||
1935 | var |
||
1936 | reg: TRegistry; |
||
1937 | begin |
||
1938 | reg := TRegistry.Create; |
||
1939 | try |
||
1940 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1941 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)+'\DefaultIcon') then |
||
1942 | begin |
||
1943 | result := reg.ReadString('Full'); |
||
1944 | reg.CloseKey; |
||
1945 | end; |
||
1946 | finally |
||
1947 | reg.Free; |
||
1948 | end; |
||
1949 | end; |
||
1950 | |||
1951 | class function TRecycleBinManager.RecyclerGetInfoTip: string; |
||
1952 | var |
||
1953 | reg: TRegistry; |
||
1954 | begin |
||
1955 | // Not available in some older versions of Windows |
||
1956 | |||
1957 | reg := TRegistry.Create; |
||
1958 | try |
||
1959 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1960 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)) then |
||
1961 | begin |
||
1962 | result := reg.ReadString('InfoTip'); |
||
1963 | result := DecodeReferenceString(result); |
||
1964 | |||
1965 | reg.CloseKey; |
||
1966 | end; |
||
1967 | finally |
||
1968 | reg.Free; |
||
1969 | end; |
||
1970 | end; |
||
1971 | |||
1972 | class function TRecycleBinManager.RecyclerGetIntroText: string; |
||
1973 | var |
||
1974 | reg: TRegistry; |
||
1975 | begin |
||
1976 | // Not available in some older versions of Windows |
||
1977 | |||
1978 | reg := TRegistry.Create; |
||
1979 | try |
||
1980 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1981 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)) then |
||
1982 | begin |
||
1983 | result := reg.ReadString('IntroText'); |
||
1984 | result := DecodeReferenceString(result); |
||
1985 | |||
1986 | reg.CloseKey; |
||
1987 | end; |
||
1988 | finally |
||
1989 | reg.Free; |
||
1990 | end; |
||
1991 | end; |
||
1992 | |||
1993 | class function TRecycleBinManager.RecyclerGetName: string; |
||
1994 | var |
||
1995 | reg: TRegistry; |
||
1996 | begin |
||
1997 | // Windows 95b: |
||
1998 | // Change of CLSID\{645FF040-5081-101B-9F08-00AA002F954E} will change the desktop name of the recycle bin. |
||
1999 | |||
2000 | // Windows 2000: If LocalizedString is available, the 3rd argument will be parsed |
||
2001 | // (if the third argument will removed, it will be read out from the DLL resource string automatically) |
||
2002 | |||
2003 | reg := TRegistry.Create; |
||
2004 | try |
||
2005 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
2006 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)) then |
||
2007 | begin |
||
2008 | if reg.ValueExists('LocalizedString') then |
||
2009 | begin |
||
2010 | result := reg.ReadString('LocalizedString'); |
||
2011 | result := DecodeReferenceString(result); |
||
2012 | end |
||
2013 | else |
||
2014 | begin |
||
2015 | result := reg.ReadString(''); |
||
2016 | end; |
||
2017 | |||
2018 | reg.CloseKey; |
||
2019 | end; |
||
2020 | finally |
||
2021 | reg.Free; |
||
2022 | end; |
||
2023 | end; |
||
2024 | |||
2025 | class function TRecycleBinManager.RecyclerEmptyEventGetName: string; |
||
2026 | var |
||
2027 | reg: TRegistry; |
||
2028 | begin |
||
2029 | reg := TRegistry.Create; |
||
2030 | try |
||
2031 | reg.RootKey := HKEY_CURRENT_USER; |
||
2032 | if reg.OpenKeyReadOnly('AppEvents\EventLabels\EmptyRecycleBin') then |
||
2033 | begin |
||
2034 | result := reg.ReadString(''); |
||
2035 | reg.CloseKey; |
||
2036 | end; |
||
2037 | finally |
||
2038 | reg.Free; |
||
2039 | end; |
||
2040 | end; |
||
2041 | |||
2042 | class function TRecycleBinManager.RecyclerEmptyEventGetCurrentSound: string; |
||
2043 | begin |
||
2044 | result := RecyclerEmptyEventGetSound('.Current'); |
||
2045 | end; |
||
2046 | |||
2047 | class function TRecycleBinManager.RecyclerEmptyEventGetDefaultSound: string; |
||
2048 | begin |
||
2049 | result := RecyclerEmptyEventGetSound('.Default'); |
||
2050 | end; |
||
2051 | |||
2052 | class procedure TRecycleBinManager.RecyclerEmptyEventGetSoundCategories(AStringList: TStringList); |
||
2053 | var |
||
2054 | reg: TRegistry; |
||
2055 | begin |
||
2056 | reg := TRegistry.Create; |
||
2057 | try |
||
2058 | reg.RootKey := HKEY_CURRENT_USER; |
||
2059 | if reg.OpenKeyReadOnly('AppEvents\Schemes\Apps\Explorer\EmptyRecycleBin') then |
||
2060 | begin |
||
2061 | reg.GetKeyNames(AStringList); |
||
2062 | reg.CloseKey; |
||
2063 | end; |
||
2064 | finally |
||
2065 | reg.Free; |
||
2066 | end; |
||
2067 | end; |
||
2068 | |||
2069 | class function TRecycleBinManager.RecyclerEmptyEventGetSound(ACategory: string): string; |
||
2070 | var |
||
2071 | reg: TRegistry; |
||
2072 | resourcestring |
||
2073 | LNG_SND_EVENT_CAT_ERROR = 'The category "%s" is not available for the notification event "%s".'; |
||
2074 | begin |
||
2075 | // Outputs an filename or empty string for no sound defined. |
||
2076 | |||
2077 | reg := TRegistry.Create; |
||
2078 | try |
||
2079 | reg.RootKey := HKEY_CURRENT_USER; |
||
2080 | if reg.OpenKeyReadOnly('AppEvents\Schemes\Apps\Explorer\EmptyRecycleBin') then |
||
2081 | begin |
||
2082 | if reg.OpenKeyReadOnly(ACategory) then |
||
2083 | begin |
||
2084 | result := reg.ReadString(''); |
||
2085 | reg.CloseKey; |
||
2086 | end |
||
2087 | else |
||
2088 | raise EEventCategoryNotDefined.CreateFmt(LNG_SND_EVENT_CAT_ERROR, [ACategory, 'EmptyRecycleBin']); |
||
2089 | reg.CloseKey; |
||
2090 | end; |
||
2091 | finally |
||
2092 | reg.Free; |
||
2093 | end; |
||
2094 | end; |
||
2095 | |||
2096 | class function TRecycleBinManager.RecyclerQueryFunctionAvailable: boolean; |
||
2097 | var |
||
2098 | RBHandle: THandle; |
||
2099 | SHQueryRecycleBin: TSHQueryRecycleBin; |
||
2100 | begin |
||
2101 | // Windows 95 without Internet Explorer 4 has no SHQueryRecycleBinA. |
||
2102 | RBHandle := LoadLibrary(shell32); |
||
2103 | try |
||
2104 | if RBHandle <> 0 then |
||
2105 | begin |
||
2106 | SHQueryRecycleBin := GetProcAddress(RBHandle, C_SHQueryRecycleBin); |
||
2107 | if not Assigned(@SHQueryRecycleBin) then |
||
2108 | begin |
||
2109 | FreeLibrary(RBHandle); |
||
2110 | RBHandle := 0; |
||
2111 | end; |
||
2112 | end; |
||
2113 | |||
2114 | result := RBHandle <> 0; |
||
2115 | finally |
||
2116 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
||
2117 | end; |
||
2118 | end; |
||
2119 | |||
2120 | class function TRecycleBinManager.RecyclerAddFileOrFolder(FileOrFolder: string; confirmation: boolean=false): boolean; |
||
2121 | var |
||
2122 | Operation: TSHFileOpStruct; |
||
2123 | begin |
||
2124 | // Template: http://www.dsdt.info/tipps/?id=116 |
||
2125 | with Operation do |
||
2126 | begin |
||
2127 | Wnd := hInstance; // OK? |
||
2128 | wFunc := FO_DELETE; |
||
2129 | pFrom := PChar(FileOrFolder + #0); |
||
2130 | pTo := nil; |
||
2131 | fFlags := FOF_ALLOWUNDO; |
||
2132 | if not confirmation then fFlags := fFlags or FOF_NOCONFIRMATION; |
||
2133 | end; |
||
2134 | Result := SHFileOperation(Operation) = 0; |
||
2135 | end; |
||
2136 | |||
2137 | class function TRecycleBinManager.RecyclerGroupPolicyNoRecycleFiles: GPOLICYBOOL; |
||
2138 | var |
||
2139 | reg: TRegistry; |
||
2140 | begin |
||
2141 | result := gpUndefined; |
||
2142 | |||
2143 | reg := TRegistry.Create; |
||
2144 | try |
||
2145 | // If a value is set in HKEY_LOCAL_MACHINE, it will be prefered, |
||
2146 | // even if gpedit.msc shows "Not configured"! |
||
2147 | {$IFDEF GroupPolicyAcceptHKLMTrick} |
||
2148 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
2149 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2150 | begin |
||
2151 | if reg.ValueExists('NoRecycleFiles') then |
||
2152 | begin |
||
2153 | if reg.ReadBool('NoRecycleFiles') then |
||
2154 | result := gpEnabled |
||
2155 | else |
||
2156 | result := gpDisabled; |
||
2157 | Exit; |
||
2158 | end; |
||
2159 | reg.CloseKey; |
||
2160 | end; |
||
2161 | {$ENDIF} |
||
2162 | |||
2163 | reg.RootKey := HKEY_CURRENT_USER; |
||
2164 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2165 | begin |
||
2166 | if reg.ValueExists('NoRecycleFiles') then |
||
2167 | begin |
||
2168 | if reg.ReadBool('NoRecycleFiles') then |
||
2169 | result := gpEnabled |
||
2170 | else |
||
2171 | result := gpDisabled; |
||
2172 | end; |
||
2173 | reg.CloseKey; |
||
2174 | end; |
||
2175 | finally |
||
2176 | reg.Free; |
||
2177 | end; |
||
2178 | end; |
||
2179 | |||
2180 | class function TRecycleBinManager.RecyclerGroupPolicyConfirmFileDelete: GPOLICYBOOL; |
||
2181 | var |
||
2182 | reg: TRegistry; |
||
2183 | begin |
||
2184 | result := gpUndefined; |
||
2185 | reg := TRegistry.Create; |
||
2186 | try |
||
2187 | // If a value is set in HKEY_LOCAL_MACHINE, it will be prefered, |
||
2188 | // even if gpedit.msc shows "Not configured"! |
||
2189 | {$IFDEF GroupPolicyAcceptHKLMTrick} |
||
2190 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
2191 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2192 | begin |
||
2193 | if reg.ValueExists('ConfirmFileDelete') then |
||
2194 | begin |
||
2195 | if reg.ReadBool('ConfirmFileDelete') then |
||
2196 | result := gpEnabled |
||
2197 | else |
||
2198 | result := gpDisabled; |
||
2199 | Exit; |
||
2200 | end; |
||
2201 | reg.CloseKey; |
||
2202 | end; |
||
2203 | {$ENDIF} |
||
2204 | |||
2205 | reg.RootKey := HKEY_CURRENT_USER; |
||
2206 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2207 | begin |
||
2208 | if reg.ValueExists('ConfirmFileDelete') then |
||
2209 | begin |
||
2210 | if reg.ReadBool('ConfirmFileDelete') then |
||
2211 | result := gpEnabled |
||
2212 | else |
||
2213 | result := gpDisabled; |
||
2214 | end; |
||
2215 | reg.CloseKey; |
||
2216 | end; |
||
2217 | finally |
||
2218 | reg.Free; |
||
2219 | end; |
||
2220 | end; |
||
2221 | |||
2222 | class function TRecycleBinManager.RecyclerGroupPolicyRecycleBinSize: integer; |
||
2223 | var |
||
2224 | reg: TRegistry; |
||
2225 | begin |
||
2226 | result := -1; |
||
2227 | reg := TRegistry.Create; |
||
2228 | try |
||
2229 | // If a value is set in HKEY_LOCAL_MACHINE, it will be prefered, |
||
2230 | // even if gpedit.msc shows "Not configured"! |
||
2231 | {$IFDEF GroupPolicyAcceptHKLMTrick} |
||
2232 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
2233 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2234 | begin |
||
2235 | if reg.ValueExists('RecycleBinSize') then |
||
2236 | begin |
||
2237 | result := reg.ReadInteger('RecycleBinSize'); |
||
2238 | Exit; |
||
2239 | end; |
||
2240 | reg.CloseKey; |
||
2241 | end; |
||
2242 | {$ENDIF} |
||
2243 | |||
2244 | reg.RootKey := HKEY_CURRENT_USER; |
||
2245 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2246 | begin |
||
2247 | if reg.ValueExists('RecycleBinSize') then |
||
2248 | begin |
||
2249 | result := reg.ReadInteger('RecycleBinSize'); |
||
2250 | end; |
||
2251 | reg.CloseKey; |
||
2252 | end; |
||
2253 | finally |
||
2254 | reg.Free; |
||
2255 | end; |
||
2256 | end; |
||
2257 | |||
2258 | class function TRecycleBinManager.RecyclerConfirmationDialogEnabled: boolean; |
||
2259 | var |
||
2260 | gp: GPOLICYBOOL; |
||
2261 | begin |
||
2262 | gp := RecyclerGroupPolicyConfirmFileDelete; |
||
2263 | if gp <> gpUndefined then |
||
2264 | begin |
||
2265 | result := gp = gpEnabled; |
||
2266 | end |
||
2267 | else |
||
2268 | begin |
||
2269 | result := RecyclerShellStateConfirmationDialogEnabled; |
||
2270 | end; |
||
2271 | end; |
||
2272 | |||
2273 | class function TRecycleBinManager.RecyclerShellStateConfirmationDialogEnabled: boolean; |
||
2274 | var |
||
2275 | lpss: SHELLSTATE; |
||
2276 | bNoConfirmRecycle: boolean; |
||
2277 | |||
2278 | PSHGetSettings: TSHGetSettings; |
||
2279 | RBHandle: THandle; |
||
2280 | |||
2281 | reg: TRegistry; |
||
2282 | rbuf: array[0..255] of byte; |
||
2283 | begin |
||
2284 | PSHGetSettings := nil; |
||
2285 | result := false; // Avoid warning message |
||
2286 | |||
2287 | RBHandle := LoadLibrary(shell32); |
||
2288 | try |
||
2289 | if RBHandle <> 0 then |
||
2290 | begin |
||
2291 | PSHGetSettings := GetProcAddress(RBHandle, C_SHGetSettings); |
||
2292 | if not Assigned(@PSHGetSettings) then |
||
2293 | begin |
||
2294 | FreeLibrary(RBHandle); |
||
2295 | RBHandle := 0; |
||
2296 | end; |
||
2297 | end; |
||
2298 | |||
2299 | if (RBHandle <> 0) and Assigned(PSHGetSettings) then |
||
2300 | begin |
||
2301 | ZeroMemory(@lpss, SizeOf(lpss)); |
||
2302 | PSHGetSettings(lpss, SSF_NOCONFIRMRECYCLE); |
||
2303 | bNoConfirmRecycle := (lpss.Flags1 and 4) = 4; // fNoConfirmRecycle |
||
2304 | |||
2305 | result := not bNoConfirmRecycle; |
||
2306 | end |
||
2307 | else |
||
2308 | begin |
||
2309 | reg := TRegistry.Create; |
||
2310 | try |
||
2311 | // API function call failed. Probably because Windows is too old. |
||
2312 | // Try to read out from registry. |
||
2313 | // The 3rd bit of the 5th byte of "ShellState" is the value |
||
2314 | // of "fNoConfirmRecycle". |
||
2315 | |||
2316 | reg.RootKey := HKEY_CURRENT_USER; |
||
2317 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Explorer') then |
||
2318 | begin |
||
2319 | ZeroMemory(@rbuf, SizeOf(rbuf)); |
||
2320 | reg.ReadBinaryData('ShellState', rbuf, SizeOf(rbuf)); |
||
2321 | |||
2322 | // Lese 3tes Bit vom 5ten Byte |
||
2323 | bNoConfirmRecycle := ((rbuf[4] and 4) = 4); |
||
2324 | result := not bNoConfirmRecycle; |
||
2325 | |||
2326 | reg.CloseKey; |
||
2327 | end |
||
2328 | else |
||
2329 | begin |
||
2330 | raise EAPICallError.CreateFmt(LNG_API_CALL_ERROR, [Format(LNG_NOT_CALLABLE, [C_SHGetSettings])]); |
||
2331 | end; |
||
2332 | finally |
||
2333 | reg.Free; |
||
2334 | end; |
||
2335 | end; |
||
2336 | finally |
||
2337 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
||
2338 | end; |
||
2339 | end; |
||
2340 | |||
2341 | class procedure TRecycleBinManager.RecyclerConfirmationDialogSetEnabled(NewSetting: boolean); |
||
2342 | var |
||
2343 | lpss: SHELLSTATE; |
||
2344 | |||
2345 | PSHGetSetSettings: TSHGetSetSettings; |
||
2346 | RBHandle: THandle; |
||
2347 | |||
2348 | reg: TRegistry; |
||
2349 | rbuf: array[0..255] of byte; |
||
2350 | |||
89 | daniel-mar | 2351 | //dwResult: DWORD; |
2352 | lpdwResult: PDWORD_PTR; |
||
75 | daniel-mar | 2353 | begin |
2354 | PSHGetSetSettings := nil; |
||
89 | daniel-mar | 2355 | lpdwResult := nil; |
75 | daniel-mar | 2356 | |
2357 | RBHandle := LoadLibrary(shell32); |
||
2358 | try |
||
2359 | if RBHandle <> 0 then |
||
2360 | begin |
||
2361 | PSHGetSetSettings := GetProcAddress(RBHandle, C_SHGetSetSettings); |
||
2362 | if not Assigned(@PSHGetSetSettings) then |
||
2363 | begin |
||
2364 | FreeLibrary(RBHandle); |
||
2365 | RBHandle := 0; |
||
2366 | end; |
||
2367 | end; |
||
2368 | |||
2369 | if (RBHandle <> 0) and Assigned(PSHGetSetSettings) then |
||
2370 | begin |
||
2371 | ZeroMemory(@lpss, SizeOf(lpss)); |
||
2372 | |||
2373 | PSHGetSetSettings(lpss, SSF_NOCONFIRMRECYCLE, false); // Get |
||
2374 | |||
2375 | // Set 3rd bit equal to NewSetting |
||
2376 | if NewSetting then |
||
2377 | lpss.Flags1 := lpss.Flags1 or $00000004 |
||
2378 | else |
||
2379 | lpss.Flags1 := lpss.Flags1 and $FFFFFFFB; |
||
2380 | |||
2381 | PSHGetSetSettings(lpss, SSF_NOCONFIRMRECYCLE, true); // Set |
||
2382 | |||
2383 | SendMessageTimeout ( |
||
2384 | HWND_BROADCAST, WM_SETTINGCHANGE, |
||
2385 | 0, lParam (pChar ('ShellState')), |
||
89 | daniel-mar | 2386 | SMTO_ABORTIFHUNG, 5000, lpdwResult(*dwResult*) |
75 | daniel-mar | 2387 | ); |
2388 | end |
||
2389 | else |
||
2390 | begin |
||
2391 | reg := TRegistry.Create; |
||
2392 | try |
||
2393 | // API function call failed. Probably because Windows is too old. |
||
2394 | // Try to read out from registry. |
||
2395 | // The 3rd bit of the 5th byte of "ShellState" is the value |
||
2396 | // of "fNoConfirmRecycle". |
||
2397 | |||
2398 | reg.RootKey := HKEY_CURRENT_USER; |
||
2399 | if reg.OpenKey('Software\Microsoft\Windows\CurrentVersion\Explorer', false) then |
||
2400 | begin |
||
2401 | ZeroMemory(@rbuf, SizeOf(rbuf)); |
||
2402 | |||
2403 | reg.ReadBinaryData('ShellState', rbuf, SizeOf(rbuf)); // Get |
||
2404 | |||
2405 | // Set 3rd bit equal to NewSetting |
||
2406 | if NewSetting then |
||
2407 | rbuf[4] := rbuf[4] or $04 |
||
2408 | else |
||
2409 | rbuf[4] := rbuf[4] and $FB; |
||
2410 | |||
2411 | reg.WriteBinaryData('ShellState', rbuf, SizeOf(rbuf)); // Set |
||
2412 | |||
2413 | SendMessageTimeout ( |
||
2414 | HWND_BROADCAST, WM_SETTINGCHANGE, |
||
2415 | 0, lParam (pChar ('ShellState')), |
||
89 | daniel-mar | 2416 | SMTO_ABORTIFHUNG, 5000, lpdwResult(*dwResult*) |
75 | daniel-mar | 2417 | ); |
2418 | |||
2419 | reg.CloseKey; |
||
2420 | end |
||
2421 | else |
||
2422 | begin |
||
2423 | raise EAPICallError.CreateFmt(LNG_API_CALL_ERROR, [Format(LNG_NOT_CALLABLE, [C_SHGetSetSettings])]); |
||
2424 | end; |
||
2425 | finally |
||
2426 | reg.Free; |
||
2427 | end; |
||
2428 | end; |
||
2429 | finally |
||
2430 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
||
2431 | end; |
||
2432 | end; |
||
2433 | |||
2434 | { TRbRecycleBinItem } |
||
2435 | |||
2436 | function TRbRecycleBinItem.GetSource: string; |
||
2437 | begin |
||
2438 | {$IFDEF UNICODE} |
||
2439 | result := SourceUnicode; |
||
2440 | {$ELSE} |
||
2441 | result := SourceAnsi; |
||
2442 | {$ENDIF} |
||
2443 | end; |
||
2444 | |||
2445 | end. |