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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 | //////////////////////////////////////////////////////////////////////////////////// |
78 | daniel-mar | 8 | // Revision: 17 JUL 2016 // |
75 | daniel-mar | 9 | // This unit is freeware, but please link to my website if you are using it! // |
10 | //////////////////////////////////////////////////////////////////////////////////// |
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11 | // Successfully tested with: // |
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12 | // Windows 95b (without IE4 Shell Extensions) // |
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13 | // Windows 95b (with IE4 Shell Extensions) // |
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76 | daniel-mar | 14 | // Windows 98 SE // |
75 | daniel-mar | 15 | // Windows NT4 SP6 // |
76 | daniel-mar | 16 | // Windows XP SP3 // |
17 | // Windows 2000 SP4 // |
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75 | daniel-mar | 18 | // Windows 2003 Server EE SP1 // |
19 | // Windows Vista // |
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20 | // Windows 7 // |
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21 | // Windows 10 // |
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22 | //////////////////////////////////////////////////////////////////////////////////// |
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23 | |||
24 | // Delphi 7 Compatibility: (TODO: compiler switches) |
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25 | // - Remove "static" |
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26 | // - Remove "strict" |
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27 | // - Remove "$REGION" |
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28 | |||
29 | // TODO: ReadBuffer überall try-except |
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30 | // TODO: Always check EOF before reading anything? |
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76 | daniel-mar | 31 | // TODO: Don't crash when timestamp is invalid. Do something else instead. |
75 | daniel-mar | 32 | // TODO: Is it possible to identify a Vista-file that is not named $Ixxxxxx.ext? |
33 | // TODO: RecyclerGetInfofiles() check additionally for removable device? |
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34 | // RecyclerIsValid() is false. |
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35 | // TODO: Make it possible to empty the recycle bin of one specific drive! |
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36 | // TODO: Unknown! Do you know the answer? |
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37 | // - How does Windows 9x/NT manage the daylight saving time (if it does)? |
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38 | // - How does Windows Vista+ react to a RECYCLER\ folder on a NTFS device? |
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39 | // - How does Windows Vista+ react to a RECYCLED\ folder on a FAT device? ==> Win7: is ignored! |
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40 | // - How does Windows XP react to RECYCLED\ folder on a FAT device? |
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41 | // TODO: Translate all comments from German to English |
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78 | daniel-mar | 42 | // TODO: Do we need this (maybe not all drives have A: till Z:?) http://stackoverflow.com/questions/17110543/how-to-retrieve-the-disk-signature-of-all-the-disks-in-windows-using-delphi-7 |
43 | // TODO: Add a lot of setters for system config stuff |
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75 | daniel-mar | 44 | |
45 | // If enabled, the deletion timestamps will not be converted by the WinAPI. |
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46 | {.$DEFINE FILETIME_DELPHI_CODE} |
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47 | |||
48 | // If a value is set in HKEY_LOCAL_MACHINE, it will be prefered, even if gpedit.msc shows "Not configured"! |
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49 | {$DEFINE GroupPolicyAcceptHKLMTrick} |
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50 | |||
51 | interface |
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52 | |||
53 | uses |
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78 | daniel-mar | 54 | Windows, SysUtils, Classes, ContNrs, ShellAPI, Registry, Messages, Math; |
75 | daniel-mar | 55 | |
56 | const |
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78 | daniel-mar | 57 | RECBINUNIT_VERSION = '2016-07-17'; |
75 | daniel-mar | 58 | |
59 | RECYCLER_CLSID: TGUID = '{645FF040-5081-101B-9F08-00AA002F954E}'; |
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78 | daniel-mar | 60 | NULL_GUID: TGUID = '{00000000-0000-0000-0000-000000000000}'; |
75 | daniel-mar | 61 | |
62 | type |
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63 | EAPICallError = class(Exception); |
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64 | EEventCategoryNotDefined = class(Exception); |
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65 | EInvalidDrive = class(Exception); |
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66 | |||
67 | PSHQueryRBInfo = ^TSHQueryRBInfo; |
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68 | TSHQueryRBInfo = packed record |
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76 | daniel-mar | 69 | cbSize : DWORD; |
75 | daniel-mar | 70 | i64Size : int64; |
71 | i64NumItems : int64; |
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72 | end; |
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73 | |||
74 | TRbRecycleBinItem = class(TObject) |
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75 | strict private |
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76 | function GetSource: string; |
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77 | strict protected |
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78 | FSourceAnsi: AnsiString; |
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79 | FSourceUnicode: WideString; |
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80 | FID: string; |
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81 | FSourceDrive: Char; |
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82 | FDeletionTime: TDateTime; |
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83 | FOriginalSize: int64; |
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84 | FIndexFile: string; |
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85 | FRemovedEntry: boolean; |
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86 | procedure ReadFromStream(stream: TStream); virtual; abstract; |
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87 | function GetPhysicalFile: string; virtual; abstract; // protected, because it will be read by "property" |
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88 | public |
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89 | property PhysicalFile: string read GetPhysicalFile; |
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90 | property SourceAnsi: AnsiString read FSourceAnsi; |
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91 | property SourceUnicode: WideString read FSourceUnicode; |
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92 | property Source: string read GetSource; // will bei either ANSI or Unicode, sepending on the Delphi version |
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93 | property ID: string read FID; |
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94 | property SourceDrive: Char read FSourceDrive; |
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95 | property DeletionTime: TDateTime read FDeletionTime; |
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96 | property OriginalSize: int64 read FOriginalSize; |
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97 | property IndexFile: string read FIndexFile; |
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98 | property RemovedEntry: boolean read FRemovedEntry; // the file is NOT in the recycle bin anymore! |
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99 | |||
100 | // Attention: There are not an official API calls. The delete and recover |
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101 | // functions might fail and/or damage the shell cache. Handle with care! |
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102 | function DeleteFile: boolean; virtual; abstract; |
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103 | function RecoverFile: boolean; virtual; abstract; |
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104 | function OpenFile: boolean; virtual; abstract; |
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105 | end; |
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106 | |||
76 | daniel-mar | 107 | TRbInfoAItem = class(TRbRecycleBinItem) |
75 | daniel-mar | 108 | strict protected |
109 | procedure ReadFromStream(stream: TStream); override; |
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110 | function GetPhysicalFile: string; override; |
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111 | public |
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112 | constructor Create(fs: TStream; AIndexFile: string); |
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113 | function DeleteFile: boolean; override; |
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114 | // TODO: function RecoverFile: boolean; override; |
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115 | // TODO: function OpenFile: boolean; override; |
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116 | end; |
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117 | |||
76 | daniel-mar | 118 | TRbInfoWItem = class(TRbRecycleBinItem) |
75 | daniel-mar | 119 | strict protected |
120 | procedure ReadFromStream(stream: TStream); override; |
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121 | function GetPhysicalFile: string; override; |
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122 | public |
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123 | constructor Create(fs: TStream; AIndexFile: string); |
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124 | function DeleteFile: boolean; override; |
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125 | // TODO: function RecoverFile: boolean; override; |
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126 | // TODO: function OpenFile: boolean; override; |
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127 | end; |
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128 | |||
129 | TRbVistaItem = class(TRbRecycleBinItem) |
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130 | strict protected |
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131 | procedure ReadFromStream(stream: TStream); override; |
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132 | function GetPhysicalFile: string; override; |
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133 | public |
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134 | constructor Create(fs: TStream; AIndexFile, AID: string); |
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135 | function DeleteFile: boolean; override; |
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136 | // TODO: function RecoverFile: boolean; override; |
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137 | // TODO: function OpenFile: boolean; override; |
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138 | end; |
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139 | |||
140 | TRbRecycleBin = class(TObject) |
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141 | strict private |
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142 | FFileOrDirectory: string; |
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143 | FSID: string; |
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76 | daniel-mar | 144 | FTolerantReading: boolean; |
75 | daniel-mar | 145 | public |
146 | constructor Create(AFileOrDirectory: string; ASID: string=''); |
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147 | |||
148 | function GetItem(id: string): TRbRecycleBinItem; |
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149 | procedure ListItems(list: TObjectList{TRbRecycleBinItem}); |
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150 | function CheckIndexes(slErrors: TStrings): boolean; |
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151 | |||
152 | property FileOrDirectory: string read FFileOrDirectory; |
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153 | property SID: string read FSID; |
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76 | daniel-mar | 154 | |
155 | // Allows an index file to be read, even if an incompatible multiboot combination |
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156 | // corrupted it. Default: true. |
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157 | property TolerantReading: boolean read FTolerantReading write FTolerantReading; |
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75 | daniel-mar | 158 | end; |
159 | |||
160 | // TODO: Wie sieht es aus mit Laufwerken, die nur als Mount-Point eingebunden sind? |
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161 | TRbDrive = class(TObject) |
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162 | strict private |
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163 | FDriveLetter: Char; |
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164 | |||
78 | daniel-mar | 165 | function OldCapacityPercent(var res: integer): boolean; // in % (0-100) |
166 | function NewCapacityAbsolute(var res: integer): boolean; // in MB |
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167 | |||
168 | function DiskSize: integer; // in MB |
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169 | function DriveNumber: integer; |
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75 | daniel-mar | 170 | strict protected |
171 | function IsFAT: boolean; |
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172 | procedure CheckDriveExisting; |
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78 | daniel-mar | 173 | |
174 | // will return NULL_GUID in case of an error or if it is not supported |
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175 | function GetVolumeGUID: TGUID; |
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176 | function GetVolumeGUIDAvailable: boolean; |
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177 | |||
178 | // TODO: get drive serial |
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75 | daniel-mar | 179 | public |
180 | constructor Create(ADriveLetter: Char); |
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181 | |||
182 | // Wenn UserSID='', dann werden alle Recycler gefunden |
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183 | procedure ListRecycleBins(list: TObjectList{TRbRecycleBin}; UserSID: string=''); |
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184 | |||
185 | property DriveLetter: Char read FDriveLetter; |
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186 | property VolumeGUID: TGUID read GetVolumeGUID; |
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77 | daniel-mar | 187 | property VolumeGUIDAvailable: boolean read GetVolumeGUIDAvailable; |
75 | daniel-mar | 188 | function GetAPIInfo: TSHQueryRBInfo; |
189 | function GetSize: int64; |
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190 | function GetNumItems: int64; |
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191 | function IsEmpty: boolean; |
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192 | |||
78 | daniel-mar | 193 | function GetMaxPercentUsage: Extended; // 0..1 |
194 | function GetMaxAbsoluteUsage: integer; // in MB |
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75 | daniel-mar | 195 | function GetNukeOnDelete: boolean; |
196 | end; |
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197 | |||
198 | GPOLICYBOOL = (gpUndefined, gpEnabled, gpDisabled); |
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199 | |||
200 | TRecycleBinManager = class(TObject) |
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201 | public |
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202 | class procedure ListDrives(list: TObjectList{TRbDrive}); static; |
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203 | class function RecycleBinPossible(Drive: Char): boolean; static; |
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204 | |||
205 | class function OwnRecyclersSize: int64; static; |
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206 | class function OwnRecyclersNumItems: int64; static; |
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207 | class function OwnRecyclersEmpty: boolean; static; |
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208 | |||
209 | class function EmptyOwnRecyclers(flags: cardinal): boolean; overload; static; |
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210 | class function EmptyOwnRecyclers(sound, progress, confirmation: boolean): boolean; overload; static; |
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211 | |||
212 | class function RecyclerGetCurrentIconString: string; static; |
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213 | class function RecyclerGetDefaultIconString: string; static; |
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214 | class function RecyclerGetEmptyIconString: string; static; |
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215 | class function RecyclerGetFullIconString: string; static; |
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216 | |||
217 | class function GetGlobalMaxPercentUsage: integer; static; // TODO: In Win Vista: absolute and not relative sizes |
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218 | class function GetGlobalNukeOnDelete: boolean; static; |
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219 | class function UsesGlobalSettings: boolean; static; |
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220 | |||
221 | class function RecyclerGetName: string; static; |
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222 | class function RecyclerGetInfoTip: string; static; |
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223 | class function RecyclerGetIntroText: string; static; |
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224 | |||
225 | class function RecyclerEmptyEventGetCurrentSound: string; static; |
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226 | class function RecyclerEmptyEventGetDefaultSound: string; static; |
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227 | class function RecyclerEmptyEventGetName: string; static; |
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228 | class function RecyclerEmptyEventGetSound(ACategory: string): string; static; |
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229 | class procedure RecyclerEmptyEventGetSoundCategories(AStringList: TStringList); static; |
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230 | |||
231 | // TODO: In future also detect for other users |
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232 | // TODO: Also make a setter (incl. Message to Windows Explorer?) |
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233 | class function RecyclerGroupPolicyConfirmFileDelete: GPOLICYBOOL; static; |
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234 | class function RecyclerGroupPolicyNoRecycleFiles: GPOLICYBOOL; static; |
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235 | class function RecyclerGroupPolicyRecycleBinSize: integer; static; |
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236 | |||
237 | class function RecyclerConfirmationDialogEnabled: boolean; static; |
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238 | class procedure RecyclerConfirmationDialogSetEnabled(NewSetting: boolean); static; |
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239 | class function RecyclerShellStateConfirmationDialogEnabled: boolean; static; |
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240 | |||
241 | // Diese Funktion ist false, wenn sie z.B. unter Windows 95 ohne Internet Explorer |
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242 | // 4.0 Shell Extension ausgeführt wird. Wenn abwärtskompatibler Code geschrieben |
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243 | // werden soll, sollte RecyclerQueryFunctionAvailable() verwendet werden, da |
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244 | // unter Windows 95 folgende Funktionalitäten NICHT vorhanden sind: |
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245 | // - RecyclerIsEmpty |
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246 | // - RecyclerGetNumItems |
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247 | // - RecyclerGetSize |
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248 | // - RecyclerGetAPIInfo |
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249 | class function RecyclerQueryFunctionAvailable: boolean; static; |
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250 | |||
251 | class function RecyclerAddFileOrFolder(FileOrFolder: string; confirmation: boolean=false): boolean; static; |
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252 | end; |
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253 | |||
254 | function GPBoolToString(value: GPOLICYBOOL): string; |
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255 | |||
256 | implementation |
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257 | |||
258 | uses |
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259 | RecBinUnitLowLvl; |
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260 | |||
261 | {$REGION 'WinAPI/RTL declarations'} |
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262 | (* |
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263 | const |
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264 | {$IFDEF MSWINDOWS} |
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265 | shell32 = 'shell32.dll'; |
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266 | advapi32 = 'advapi32.dll'; |
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267 | kernel32 = 'kernel32.dll'; |
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268 | {$ENDIF} |
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269 | {$IFDEF LINUX} |
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270 | shell32 = 'libshell32.borland.so'; |
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271 | advapi32 = 'libwine.borland.so'; |
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272 | kernel32 = 'libwine.borland.so'; |
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273 | {$ENDIF} |
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274 | *) |
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275 | |||
276 | type |
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277 | SHELLSTATE = record |
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278 | Flags1: DWORD; |
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279 | (* |
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280 | BOOL fShowAllObjects : 1; |
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281 | BOOL fShowExtensions : 1; |
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282 | BOOL fNoConfirmRecycle : 1; |
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283 | |||
284 | BOOL fShowSysFiles : 1; |
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285 | BOOL fShowCompColor : 1; |
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286 | BOOL fDoubleClickInWebView : 1; |
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287 | BOOL fDesktopHTML : 1; |
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288 | BOOL fWin95Classic : 1; |
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289 | BOOL fDontPrettyPath : 1; |
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290 | BOOL fShowAttribCol : 1; // No longer used, dead bit |
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291 | BOOL fMapNetDrvBtn : 1; |
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292 | BOOL fShowInfoTip : 1; |
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293 | BOOL fHideIcons : 1; |
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294 | BOOL fWebView : 1; |
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295 | BOOL fFilter : 1; |
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296 | BOOL fShowSuperHidden : 1; |
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297 | BOOL fNoNetCrawling : 1; |
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298 | *) |
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299 | dwWin95Unused: DWORD; // Win95 only - no longer supported pszHiddenFileExts |
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300 | uWin95Unused: UINT; // Win95 only - no longer supported cbHiddenFileExts |
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301 | |||
302 | // Note: Not a typo! This is a persisted structure so we cannot use LPARAM |
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303 | lParamSort: Integer; |
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304 | iSortDirection: Integer; |
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305 | |||
306 | version: UINT; |
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307 | |||
308 | // new for win2k. need notUsed var to calc the right size of ie4 struct |
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309 | // FIELD_OFFSET does not work on bit fields |
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310 | uNotUsed: UINT; // feel free to rename and use |
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311 | Flags2: DWORD; |
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312 | (* |
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313 | BOOL fSepProcess: 1; |
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314 | // new for Whistler. |
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315 | BOOL fStartPanelOn: 1; //Indicates if the Whistler StartPanel mode is ON or OFF. |
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316 | BOOL fShowStartPage: 1; //Indicates if the Whistler StartPage on desktop is ON or OFF. |
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317 | UINT fSpareFlags : 13; |
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318 | *) |
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319 | end; |
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320 | LPSHELLSTATE = ^SHELLSTATE; |
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321 | |||
322 | const |
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323 | // Masks for the SHELLSTATE |
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324 | SSF_SHOWALLOBJECTS = $00000001; |
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325 | SSF_SHOWEXTENSIONS = $00000002; |
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326 | SSF_HIDDENFILEEXTS = $00000004; |
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327 | SSF_SERVERADMINUI = $00000004; |
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328 | SSF_SHOWCOMPCOLOR = $00000008; |
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329 | SSF_SORTCOLUMNS = $00000010; |
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330 | SSF_SHOWSYSFILES = $00000020; |
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331 | SSF_DOUBLECLICKINWEBVIEW = $00000080; |
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332 | SSF_SHOWATTRIBCOL = $00000100; |
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333 | SSF_DESKTOPHTML = $00000200; |
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334 | SSF_WIN95CLASSIC = $00000400; |
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335 | SSF_DONTPRETTYPATH = $00000800; |
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336 | SSF_SHOWINFOTIP = $00002000; |
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337 | SSF_MAPNETDRVBUTTON = $00001000; |
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338 | SSF_NOCONFIRMRECYCLE = $00008000; |
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339 | SSF_HIDEICONS = $00004000; |
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340 | SSF_FILTER = $00010000; |
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341 | SSF_WEBVIEW = $00020000; |
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342 | SSF_SHOWSUPERHIDDEN = $00040000; |
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343 | SSF_SEPPROCESS = $00080000; |
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344 | SSF_NONETCRAWLING = $00100000; |
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345 | SSF_STARTPANELON = $00200000; |
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346 | SSF_SHOWSTARTPAGE = $00400000; |
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347 | {$ENDREGION} |
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348 | |||
349 | resourcestring |
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350 | LNG_API_CALL_ERROR = 'Error while calling the API. Additional information: "%s".'; |
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351 | LNG_NOT_CALLABLE = '%s not callable'; |
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352 | LNG_ERROR_CODE = '%s (Arguments: %s) returns error code %s'; |
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353 | LNG_FILE_NOT_FOUND = 'File not found: %s'; |
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76 | daniel-mar | 354 | LNG_INVALID_INFO_FORMAT = 'Unexpected record size: %s'; |
75 | daniel-mar | 355 | LNG_DRIVE_NOT_EXISTING = 'Drive %s does not exist.'; |
356 | |||
357 | const |
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358 | C_SHQueryRecycleBin = 'SHQueryRecycleBinA'; |
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359 | C_GetVolumeNameForVolumeMountPoint = 'GetVolumeNameForVolumeMountPointA'; |
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360 | C_SHEmptyRecycleBinA = 'SHEmptyRecycleBinA'; |
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361 | C_SHGetSettings = 'SHGetSettings'; |
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362 | C_SHGetSetSettings = 'SHGetSetSettings'; |
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363 | |||
364 | type |
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365 | TSHQueryRecycleBin = function(pszRootPath: LPCTSTR; var pSHQueryRBInfo: TSHQueryRBInfo): HRESULT; stdcall; |
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366 | TGetVolumeNameForVolumeMountPoint = function(lpszVolumeMountPoint: LPCTSTR; lpszVolumeName: LPTSTR; cchBufferLength: DWORD): BOOL; stdcall; |
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367 | TSHEmptyRecycleBin = function(Wnd: HWND; pszRootPath: PChar; dwFlags: DWORD): HRESULT; stdcall; |
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368 | TSHGetSettings = procedure(var lpss: SHELLSTATE; dwMask: DWORD) stdcall; |
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369 | TSHGetSetSettings = procedure(var lpss: SHELLSTATE; dwMask: DWORD; bSet: BOOL) stdcall; |
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370 | |||
371 | function GetDriveGUID(driveLetter: Char; var guid: TGUID): DWORD; |
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372 | var |
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373 | Buffer: array[0..50] of AnsiChar; |
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374 | x: string; |
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375 | PGetVolumeNameForVolumeMountPoint: TGetVolumeNameForVolumeMountPoint; |
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376 | RBHandle: THandle; |
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377 | begin |
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378 | RBHandle := LoadLibrary(kernel32); |
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379 | try |
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380 | if RBHandle <> 0 then |
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381 | begin |
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382 | PGetVolumeNameForVolumeMountPoint := GetProcAddress(RBHandle, C_GetVolumeNameForVolumeMountPoint); |
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383 | if not Assigned(@PGetVolumeNameForVolumeMountPoint) then |
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384 | begin |
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385 | result := GetLastError; |
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386 | FreeLibrary(RBHandle); |
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387 | RBHandle := 0; |
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388 | end |
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389 | else |
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390 | begin |
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391 | if PGetVolumeNameForVolumeMountPoint(PAnsiChar(driveLetter+':\'), Buffer, SizeOf(Buffer)) then |
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392 | begin |
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393 | x := buffer; |
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394 | x := copy(x, 11, 38); |
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395 | guid := StringToGUID(x); |
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396 | result := ERROR_SUCCESS; |
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397 | end |
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398 | else |
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399 | result := GetLastError; |
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400 | end; |
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401 | end |
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402 | else result := GetLastError; |
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403 | finally |
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404 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
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405 | end; |
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406 | end; |
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407 | |||
408 | function FileTimeToDateTime(FileTime: FILETIME): TDateTime; |
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409 | {$IFDEF FILETIME_DELPHI_CODE} |
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410 | var |
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411 | SystemTime: TSystemTime; |
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412 | nowUTC: TDateTime; |
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413 | gmtDifference: int64; |
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414 | begin |
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415 | GetSystemTime(SystemTime); |
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416 | with SystemTime do |
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417 | begin |
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418 | // http://www.delphipraxis.net/post340194.html#34019 |
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419 | nowUTC := EncodeDate(wYear, wMonth, wDay) + |
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420 | EncodeTime(wHour, wMinute, wSecond, wMilliseconds); |
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421 | end; |
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422 | |||
423 | gmtDifference := datetimetounix(nowUTC) - datetimetounix(Now); |
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424 | |||
425 | // http://www.e-fense.com/helix/Docs/Recycler_Bin_Record_Reconstruction.pdf states: |
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426 | // UnixTime = 0.0000001 * NTTime + 11644473600 |
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427 | // This is wrong! The correct formula is: |
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428 | // UnixTime = 0.0000001 * NTTime - 11644473600 + c * 3600 |
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429 | // c = GMT-Difference (MEZ = 1) inclusive daylight saving time (+3600 seconds) |
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430 | result := unixtodatetime(round(0.0000001 * int64(FileTime)) - 11644473600 - gmtDifference); |
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431 | {$ELSE} |
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432 | var |
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433 | LocalTime: TFileTime; |
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434 | DOSTime: Integer; |
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435 | begin |
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436 | FileTimeToLocalFileTime(FileTime, LocalTime); |
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437 | FileTimeToDosDateTime(LocalTime, LongRec(DOSTime).Hi, LongRec(DOSTime).Lo); |
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438 | Result := FileDateToDateTime(DOSTime); |
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439 | {$ENDIF} |
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440 | end; |
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441 | |||
442 | function DeleteDirectory(const Name: string): boolean; |
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443 | var |
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444 | F: TSearchRec; |
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445 | begin |
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446 | result := true; |
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447 | if FindFirst(IncludeTrailingPathDelimiter(Name) + '*', faAnyFile, F) = 0 then |
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448 | begin |
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449 | try |
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450 | repeat |
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451 | if F.Attr and faDirectory <> 0 then |
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452 | begin |
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453 | if (F.Name <> '.') and (F.Name <> '..') then |
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454 | begin |
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455 | result := result and DeleteDirectory(IncludeTrailingPathDelimiter(Name) + F.Name); |
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456 | end; |
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457 | end |
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458 | else |
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459 | begin |
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460 | if not DeleteFile(IncludeTrailingPathDelimiter(Name) + F.Name) then result := false; |
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461 | end; |
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462 | until FindNext(F) <> 0; |
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463 | finally |
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464 | FindClose(F); |
||
465 | end; |
||
466 | if not RemoveDir(Name) then result := false; |
||
467 | end; |
||
468 | end; |
||
469 | |||
470 | function DriveLetterToDriveNumber(driveLetter: Char): integer; |
||
471 | var |
||
472 | tmp: string; |
||
473 | begin |
||
474 | tmp := LowerCase(driveLetter); |
||
475 | result := Ord(tmp[1])-Ord('a'); |
||
476 | end; |
||
477 | |||
478 | function GetStringFromDLL(filename: string; num: integer): string; |
||
479 | const |
||
480 | // Source: http://www.eggheadcafe.com/forumarchives/vcmfc/sep2005/post23917443.asp |
||
481 | MAX_BUF = 4097; // OK? |
||
482 | var |
||
483 | hLib: THandle; |
||
484 | buf: array[0..MAX_BUF] of char; |
||
485 | begin |
||
486 | hLib := LoadLibrary(PChar(filename)); |
||
487 | try |
||
488 | LoadString(hLib, num, buf, sizeof(buf)); |
||
489 | result := buf; |
||
490 | finally |
||
491 | FreeLibrary(hLib); |
||
492 | end; |
||
493 | end; |
||
494 | |||
495 | function ExpandEnvStr(const szInput: string): string; |
||
496 | const |
||
497 | MAXSIZE = 32768; // laut PSDK sind 32k das Maximum |
||
498 | begin |
||
499 | // Source: http://www.delphi-library.de/topic_Umgebungsvariable+in+einem+String+aufloesen_20516,0.html |
||
500 | SetLength(Result,MAXSIZE); |
||
501 | SetLength(Result,ExpandEnvironmentStrings(pchar(szInput), |
||
502 | @Result[1],length(Result))-1); //-1 um abschließendes #0 zu verwerfen |
||
503 | end; |
||
504 | |||
505 | function DecodeReferenceString(s: string): string; |
||
506 | var |
||
507 | dll, id, lang, cache: string; |
||
508 | sl, sl2: tstringlist; |
||
509 | begin |
||
510 | // Beispiele |
||
511 | // Papierkorb -- Windows 95 |
||
512 | // @C:\WINNT\system32\shell32.dll,-8964@1031,Papierkorb -- Windows 2000 |
||
513 | |||
514 | if Copy(s, 1, 1) = '@' then |
||
515 | begin |
||
516 | // Referenz auf eine DLL |
||
517 | // @<dll>,-<id>[@<lang>][,<cache>] |
||
518 | |||
519 | sl := TStringList.Create; |
||
520 | try |
||
521 | // '@' am Anfang entfernen |
||
522 | s := Copy(s, 2, length(s)-1); |
||
523 | |||
524 | // Nach ',' auftrennen |
||
525 | // sl[0] --> dll |
||
526 | // sl[1] --> -id@lang |
||
527 | // sl[2] --> cache |
||
528 | sl.CommaText := s; |
||
529 | |||
530 | if sl.Count > 2 then |
||
531 | begin |
||
532 | // Das Ergebnis ist bereits im Klartext vorhanden und muss nicht extrahiert werden |
||
533 | // Ist bei Windows 2000 der Fall |
||
534 | cache := sl[2]; |
||
535 | result := cache; |
||
536 | exit; |
||
537 | end; |
||
538 | |||
539 | if sl.Count > 1 then |
||
540 | begin |
||
541 | dll := sl[0]; |
||
542 | |||
543 | sl2 := TStringList.Create; |
||
544 | try |
||
545 | // Nach '@' auftrennen |
||
546 | // sl2[0] --> id |
||
547 | // sl2[1] --> lang |
||
548 | sl2.CommaText := StringReplace(sl[1], '@', ',', [rfReplaceAll]); |
||
549 | |||
550 | id := sl2[0]; |
||
551 | |||
552 | if sl2.Count > 1 then |
||
553 | begin |
||
554 | // ToDo: In Zukunft beachten, sofern möglich |
||
555 | lang := sl2[1]; |
||
556 | end; |
||
557 | |||
558 | // Umgebungsvariablen erkennen und Minuszeichen entfernen |
||
559 | result := GetStringFromDLL(ExpandEnvStr(dll), -StrToInt(id)); |
||
560 | finally |
||
561 | sl2.Free; |
||
562 | end; |
||
563 | end |
||
564 | else |
||
565 | begin |
||
566 | // Zu wenige Informationen! |
||
567 | |||
568 | result := ''; |
||
569 | end; |
||
570 | finally |
||
571 | sl.Free; |
||
572 | end; |
||
573 | end |
||
574 | else |
||
575 | begin |
||
576 | // Kein Hinweis auf eine Referenz |
||
577 | result := s; |
||
578 | end; |
||
579 | end; |
||
580 | |||
581 | function GPBoolToString(value: GPOLICYBOOL): string; |
||
582 | begin |
||
583 | case value of |
||
584 | gpUndefined: result := 'Not configured'; |
||
585 | gpEnabled: result := 'Enabled'; |
||
586 | gpDisabled: result := 'Disabled'; |
||
587 | end; |
||
588 | end; |
||
589 | |||
590 | { TRbRecycleBin } |
||
591 | |||
592 | constructor TRbRecycleBin.Create(AFileOrDirectory: string; ASID: string=''); |
||
593 | begin |
||
594 | inherited Create; |
||
595 | |||
596 | FFileOrDirectory := AFileOrDirectory; |
||
597 | FSID := ASID; |
||
76 | daniel-mar | 598 | TolerantReading := true; |
75 | daniel-mar | 599 | end; |
600 | |||
601 | // TODO: also a function that tests if the data files are still existing |
||
602 | function TRbRecycleBin.CheckIndexes(slErrors: TStrings): boolean; |
||
603 | |||
604 | procedure _Assert(assertion: boolean; msg: string; args: array of const); |
||
605 | begin |
||
606 | if not assertion then |
||
607 | begin |
||
608 | slErrors.Add(Format(msg, args)); |
||
609 | result := false; |
||
610 | end; |
||
611 | end; |
||
612 | |||
613 | procedure _HandleIndexFile(AFile: string); |
||
614 | var |
||
615 | fs: TFileStream; |
||
76 | daniel-mar | 616 | infoHdr: TRbInfoHeader; |
75 | daniel-mar | 617 | resourcestring |
618 | LNG_IDXERR_VISTA_FILESIZE = '%s: Vista index file has wrong size'; |
||
619 | LNG_IDXERR_INFO_RECSIZE_UNEXPECTED = '%s: record size unexpected'; |
||
620 | LNG_IDXERR_INFO_UNEXPECTED_EOF = '%s: file size wrong'; |
||
621 | begin |
||
622 | fs := TFileStream.Create(AFile, fmOpenRead); |
||
623 | try |
||
624 | fs.Seek(0, soFromBeginning); |
||
625 | |||
626 | if SameText(copy(ExtractFileName(AFile), 1, 2), '$I') then |
||
627 | begin |
||
628 | _Assert(fs.Size = SizeOf(TRbVistaItem), LNG_IDXERR_VISTA_FILESIZE, [AFile]); |
||
629 | end |
||
76 | daniel-mar | 630 | else if SameText(ExtractFileName(AFile), 'INFO') or |
631 | SameText(ExtractFileName(AFile), 'INFO2') then |
||
75 | daniel-mar | 632 | begin |
633 | fs.ReadBuffer(infoHdr, SizeOf(infoHdr)); |
||
76 | daniel-mar | 634 | _Assert((infoHdr.recordLength = SizeOf(TRbInfoRecordA)) or |
635 | (infoHdr.recordLength = SizeOf(TRbInfoRecordW)), LNG_IDXERR_INFO_RECSIZE_UNEXPECTED, [AFile]); |
||
75 | daniel-mar | 636 | _Assert((fs.Size-fs.Position) mod infoHdr.recordLength = 0, LNG_IDXERR_INFO_UNEXPECTED_EOF, [AFile]); |
76 | daniel-mar | 637 | // TODO: we can also check infoHdr.totalSize or infoHdr.totalEntries |
75 | daniel-mar | 638 | end |
76 | daniel-mar | 639 | else Assert(false); |
75 | daniel-mar | 640 | |
641 | // TODO: we could check each item for invalid stuff...? |
||
642 | finally |
||
643 | FreeAndNil(fs); |
||
644 | end; |
||
645 | end; |
||
646 | |||
647 | procedure _HandleVistaDir(ADirectory: string); |
||
648 | var |
||
649 | SR: TSearchRec; |
||
650 | begin |
||
651 | ADirectory := IncludeTrailingPathDelimiter(ADirectory); |
||
652 | |||
653 | if FindFirst(ADirectory + '$I*', faAnyFile, SR) = 0 then |
||
654 | begin |
||
655 | repeat |
||
656 | _HandleIndexFile(ADirectory+sr.Name); |
||
657 | until FindNext(SR) <> 0; |
||
658 | end; |
||
659 | FindClose(SR); |
||
660 | end; |
||
661 | |||
662 | begin |
||
663 | result := true; |
||
664 | |||
665 | if DirectoryExists(FFileOrDirectory) then // Vista, as well as directories with INFO and INFO2 |
||
666 | begin |
||
667 | _HandleVistaDir(FFileOrDirectory); |
||
668 | |||
669 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2') then |
||
670 | begin |
||
671 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2'); |
||
672 | end; |
||
673 | |||
674 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO') then |
||
675 | begin |
||
676 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO'); |
||
677 | end; |
||
678 | end |
||
679 | else if FileExists(FFileOrDirectory) then |
||
680 | begin |
||
681 | _HandleIndexFile(FFileOrDirectory); |
||
682 | end |
||
683 | else raise Exception.CreateFmt(LNG_FILE_NOT_FOUND, [FFileOrDirectory]); |
||
684 | end; |
||
685 | |||
686 | function TRbRecycleBin.GetItem(id: string): TRbRecycleBinItem; |
||
687 | |||
688 | procedure _HandleIndexFile(AFile: string); |
||
689 | var |
||
690 | fs: TFileStream; |
||
76 | daniel-mar | 691 | infoHdr: TRbInfoHeader; |
75 | daniel-mar | 692 | testItem: TRbRecycleBinItem; |
693 | begin |
||
694 | fs := TFileStream.Create(AFile, fmOpenRead); |
||
695 | try |
||
696 | fs.Seek(0, soFromBeginning); |
||
697 | |||
698 | if fs.Size = SizeOf(TRbVistaRecord) then |
||
699 | begin |
||
700 | if SameText(ExtractFileName(AFile), '$I'+id) then |
||
701 | begin |
||
702 | result := TRbVistaItem.Create(fs, AFile, id); |
||
703 | end; |
||
704 | end |
||
705 | else |
||
706 | begin |
||
707 | fs.ReadBuffer(infoHdr, SizeOf(infoHdr)); |
||
708 | case infoHdr.recordLength of |
||
76 | daniel-mar | 709 | SizeOf(TRbInfoRecordA): |
75 | daniel-mar | 710 | begin |
711 | while fs.Position < fs.size do |
||
712 | begin |
||
76 | daniel-mar | 713 | testItem := TRbInfoAItem.Create(fs, AFile); |
75 | daniel-mar | 714 | if testItem.ID = id then |
715 | begin |
||
716 | result := testItem; |
||
717 | break; |
||
718 | end; |
||
719 | end; |
||
720 | end; |
||
76 | daniel-mar | 721 | SizeOf(TRbInfoRecordW): |
75 | daniel-mar | 722 | begin |
723 | while fs.Position < fs.size do |
||
724 | begin |
||
76 | daniel-mar | 725 | testItem := TRbInfoWItem.Create(fs, AFile); |
75 | daniel-mar | 726 | if testItem.ID = id then |
727 | begin |
||
728 | result := testItem; |
||
729 | break; |
||
730 | end; |
||
731 | end; |
||
732 | end |
||
733 | else |
||
734 | begin |
||
735 | raise Exception.CreateFmt(LNG_INVALID_INFO_FORMAT, [AFile]); |
||
736 | end; |
||
737 | end; |
||
738 | end; |
||
739 | finally |
||
740 | FreeAndNil(fs); |
||
741 | end; |
||
742 | end; |
||
743 | |||
744 | procedure _HandleVistaDir(ADirectory: string); |
||
745 | var |
||
746 | SR: TSearchRec; |
||
747 | fs: TFileStream; |
||
748 | id: string; |
||
749 | begin |
||
750 | ADirectory := IncludeTrailingPathDelimiter(ADirectory); |
||
751 | |||
752 | if FileExists(ADirectory + '$I' + id) then |
||
753 | begin |
||
754 | fs := TFileStream.Create(ADirectory+sr.Name, fmOpenRead); |
||
755 | try |
||
756 | fs.Seek(0, soFromBeginning); |
||
757 | result := TRbVistaItem.Create(fs, ADirectory+sr.Name, id); |
||
758 | finally |
||
759 | FreeAndNil(fs); |
||
760 | end; |
||
761 | end; |
||
762 | end; |
||
763 | |||
764 | begin |
||
765 | result := nil; |
||
766 | |||
767 | if DirectoryExists(FFileOrDirectory) then // Vista, as well as directories with INFO and INFO2 |
||
768 | begin |
||
769 | _HandleVistaDir(FFileOrDirectory); |
||
770 | if Assigned(result) then exit; |
||
771 | |||
772 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2') then |
||
773 | begin |
||
774 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2'); |
||
775 | if Assigned(result) then exit; |
||
776 | end; |
||
777 | |||
778 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO') then |
||
779 | begin |
||
780 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO'); |
||
781 | if Assigned(result) then exit; |
||
782 | end; |
||
783 | end |
||
784 | else if FileExists(FFileOrDirectory) then |
||
785 | begin |
||
786 | _HandleIndexFile(FFileOrDirectory); |
||
787 | if Assigned(result) then exit; |
||
788 | end |
||
789 | else raise Exception.CreateFmt(LNG_FILE_NOT_FOUND, [FFileOrDirectory]); |
||
790 | end; |
||
791 | |||
792 | procedure TRbRecycleBin.ListItems(list: TObjectList{TRbRecycleBinItem}); |
||
793 | |||
794 | procedure _HandleIndexFile(AFile: string); |
||
795 | var |
||
796 | fs: TFileStream; |
||
76 | daniel-mar | 797 | infoHdr: TRbInfoHeader; |
75 | daniel-mar | 798 | testID: string; |
76 | daniel-mar | 799 | wTest: TRbInfoWItem; |
800 | bakPosition: int64; |
||
75 | daniel-mar | 801 | begin |
802 | fs := TFileStream.Create(AFile, fmOpenRead); |
||
803 | try |
||
804 | fs.Seek(0, soFromBeginning); |
||
805 | |||
806 | if fs.Size = SizeOf(TRbVistaRecord) then |
||
807 | begin |
||
808 | testID := ExtractFileName(AFile); |
||
809 | if SameText(copy(testID, 1, 2), '$I') then |
||
810 | testID := copy(testID, 3, Length(testID)-2) |
||
811 | else |
||
76 | daniel-mar | 812 | testID := ''; // Just in case the user wants to read a single Vista file, but without the $I name |
75 | daniel-mar | 813 | |
814 | list.Add(TRbVistaItem.Create(fs, AFile, testID)); |
||
815 | end |
||
816 | else |
||
817 | begin |
||
76 | daniel-mar | 818 | if TolerantReading then |
819 | begin |
||
820 | // This is a special treatment how to recover data from an INFO/INFO2 file |
||
821 | // which was corrupted by an incompatible multiboot configuration. |
||
822 | // Example: |
||
823 | // - Win95 without IE4 and WinNT4 both write into the INFO file. But Win95 appends the ANSI record and WinNT appends an Unicode record. |
||
824 | // - 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. |
||
825 | fs.ReadBuffer(infoHdr, SizeOf(infoHdr)); |
||
826 | while fs.Position < fs.size do |
||
75 | daniel-mar | 827 | begin |
76 | daniel-mar | 828 | // Can we actually read a Unicode record? |
829 | if fs.Position + SizeOf(TRbInfoRecordW) <= fs.Size then |
||
75 | daniel-mar | 830 | begin |
76 | daniel-mar | 831 | // Try to read the Unicode record and check if it is valid |
832 | // In case it is no Unicode record, then the Unicode part will be the |
||
833 | // ANSI source name of the next record. In this case, we won't get |
||
834 | // a ':' at the Unicode string. |
||
835 | bakPosition := fs.Position; |
||
836 | wTest := TRbInfoWItem.Create(fs, AFile); |
||
837 | if Copy(wTest.SourceUnicode, 2, 1) = ':' then |
||
838 | begin |
||
839 | // Yes, it is a valid Unicode record. |
||
840 | list.Add(wTest); |
||
841 | end |
||
842 | else |
||
843 | begin |
||
844 | // No, it is not a valid Unicode record. Jump back, and we need |
||
845 | // to assume that the following record will be a valid ANSI record. |
||
846 | fs.Position := bakPosition; |
||
847 | list.Add(TRbInfoAItem.Create(fs, AFile)); |
||
848 | end; |
||
849 | end |
||
850 | else |
||
851 | begin |
||
852 | // No, there is not enough space left for an Unicode record. |
||
853 | // So we assume that the following record will be a valid ANSI record. |
||
854 | list.Add(TRbInfoAItem.Create(fs, AFile)); |
||
75 | daniel-mar | 855 | end; |
856 | end; |
||
76 | daniel-mar | 857 | end |
858 | else |
||
859 | begin |
||
860 | // This is the code for non-tolerant reading of the records. |
||
861 | fs.ReadBuffer(infoHdr, SizeOf(infoHdr)); |
||
862 | case infoHdr.recordLength of |
||
863 | SizeOf(TRbInfoRecordA): |
||
75 | daniel-mar | 864 | begin |
76 | daniel-mar | 865 | while fs.Position < fs.size do |
866 | begin |
||
867 | list.Add(TRbInfoAItem.Create(fs, AFile)); |
||
868 | end; |
||
75 | daniel-mar | 869 | end; |
76 | daniel-mar | 870 | SizeOf(TRbInfoRecordW): |
871 | begin |
||
872 | while fs.Position < fs.size do |
||
873 | begin |
||
874 | list.Add(TRbInfoWItem.Create(fs, AFile)); |
||
875 | end; |
||
876 | end |
||
877 | else |
||
878 | begin |
||
879 | raise Exception.CreateFmt(LNG_INVALID_INFO_FORMAT, [AFile]); |
||
880 | end; |
||
75 | daniel-mar | 881 | end; |
882 | end; |
||
883 | end; |
||
884 | finally |
||
885 | FreeAndNil(fs); |
||
886 | end; |
||
887 | end; |
||
888 | |||
889 | procedure _HandleVistaDir(ADirectory: string); |
||
890 | var |
||
891 | SR: TSearchRec; |
||
892 | fs: TFileStream; |
||
893 | id: string; |
||
894 | begin |
||
895 | ADirectory := IncludeTrailingPathDelimiter(ADirectory); |
||
896 | |||
897 | if FindFirst(ADirectory + '$I*', faAnyFile, SR) = 0 then |
||
898 | begin |
||
899 | repeat |
||
900 | id := sr.Name; |
||
901 | { 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 |
||
902 | id := Copy(id, 3, Length(id)-2); |
||
903 | |||
904 | fs := TFileStream.Create(ADirectory+sr.Name, fmOpenRead); |
||
905 | try |
||
906 | fs.Seek(0, soFromBeginning); |
||
907 | list.Add(TRbVistaItem.Create(fs, ADirectory+sr.Name, id)); |
||
908 | finally |
||
909 | FreeAndNil(fs); |
||
910 | end; |
||
911 | until FindNext(SR) <> 0; |
||
912 | end; |
||
913 | FindClose(SR); |
||
914 | end; |
||
915 | |||
916 | begin |
||
917 | if DirectoryExists(FFileOrDirectory) then // Vista, as well as directories with INFO and INFO2 |
||
918 | begin |
||
919 | _HandleVistaDir(FFileOrDirectory); |
||
920 | |||
921 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2') then |
||
922 | begin |
||
923 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO2'); |
||
924 | end; |
||
925 | |||
926 | if FileExists(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO') then |
||
927 | begin |
||
928 | _HandleIndexFile(IncludeTrailingPathDelimiter(FFileOrDirectory) + 'INFO'); |
||
929 | end; |
||
930 | end |
||
931 | else if FileExists(FFileOrDirectory) then |
||
932 | begin |
||
76 | daniel-mar | 933 | _HandleIndexFile(FFileOrDirectory); // Either INFO, or INFO2, or a single Vista index file |
75 | daniel-mar | 934 | end |
935 | else raise Exception.CreateFmt(LNG_FILE_NOT_FOUND, [FFileOrDirectory]); |
||
936 | end; |
||
937 | |||
938 | { TRbDrive } |
||
939 | |||
940 | procedure TRbDrive.CheckDriveExisting; |
||
941 | begin |
||
942 | // Does the drive exist? |
||
943 | // see http://www.delphipraxis.net/post2933.html |
||
78 | daniel-mar | 944 | if not GetLogicalDrives and (1 shl DriveNumber) <> 0 then |
75 | daniel-mar | 945 | begin |
946 | raise EInvalidDrive.CreateFmt(LNG_DRIVE_NOT_EXISTING, [UpperCase(FDriveLetter)+':']); |
||
947 | end; |
||
948 | end; |
||
949 | |||
950 | constructor TRbDrive.Create(ADriveLetter: Char); |
||
951 | begin |
||
952 | inherited Create; |
||
953 | |||
954 | FDriveLetter := ADriveLetter; |
||
955 | CheckDriveExisting; |
||
956 | end; |
||
957 | |||
78 | daniel-mar | 958 | function TRbDrive.DiskSize: integer; |
959 | begin |
||
960 | result := SysUtils.DiskSize(DriveNumber+1 {0 is current, 1 is A}) div (1024*1024); |
||
961 | end; |
||
962 | |||
963 | function TRbDrive.DriveNumber: integer; |
||
964 | begin |
||
965 | result := DriveLetterToDriveNumber(FDriveLetter); |
||
966 | end; |
||
967 | |||
75 | daniel-mar | 968 | function TRbDrive.GetAPIInfo: TSHQueryRBInfo; |
969 | var |
||
970 | PSHQueryRecycleBin: TSHQueryRecycleBin; |
||
971 | RBHandle: THandle; |
||
972 | res: HRESULT; |
||
973 | Path: string; |
||
974 | begin |
||
975 | Path := FDriveLetter + ':\'; |
||
976 | |||
977 | // Ref: http://www.delphipraxis.net/post1291.html |
||
978 | |||
979 | RBHandle := LoadLibrary(shell32); |
||
980 | try |
||
981 | PSHQueryRecycleBin := nil; |
||
982 | if RBHandle <> 0 then |
||
983 | begin |
||
984 | PSHQueryRecycleBin := GetProcAddress(RBHandle, C_SHQueryRecycleBin); |
||
985 | if not Assigned(@PSHQueryRecycleBin) then |
||
986 | begin |
||
987 | FreeLibrary(RBHandle); |
||
988 | RBHandle := 0; |
||
989 | end; |
||
990 | end; |
||
991 | |||
992 | FillChar(result, SizeOf(TSHQueryRBInfo), 0); |
||
993 | result.cbSize := SizeOf(TSHQueryRBInfo); |
||
994 | |||
995 | if (RBHandle <> 0) and Assigned(PSHQueryRecycleBin) then |
||
996 | begin |
||
997 | res := PSHQueryRecycleBin(PChar(Path), result); |
||
998 | // if Succeeded(res) then |
||
999 | if res = S_OK then |
||
1000 | begin |
||
1001 | // Alles OK, unser result hat nun die gewünschten Daten. |
||
1002 | end |
||
1003 | else |
||
1004 | begin |
||
1005 | // Since Windows Vista, SHQueryRecycleBin will fail with E_FAIL (80004005) |
||
1006 | // if Path is a floppy or CD drive... |
||
1007 | raise EAPICallError.CreateFmt(LNG_API_CALL_ERROR, [Format(LNG_ERROR_CODE, [C_SHQueryRecycleBin, Path, '0x'+IntToHex(res, 2*SizeOf(HRESULT))])]); |
||
1008 | end; |
||
1009 | end |
||
1010 | else |
||
1011 | raise EAPICallError.CreateFmt(LNG_API_CALL_ERROR, [Format(LNG_NOT_CALLABLE, [C_SHQueryRecycleBin])]); |
||
1012 | finally |
||
1013 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
||
1014 | end; |
||
1015 | end; |
||
1016 | |||
78 | daniel-mar | 1017 | function TRbDrive.GetMaxPercentUsage: Extended; |
75 | daniel-mar | 1018 | var |
78 | daniel-mar | 1019 | abs: integer; // in MB |
1020 | rel: integer; // in % (0-100) |
||
1021 | gpSetting: integer; |
||
1022 | const |
||
1023 | DEFAULT_PERCENT = 10; // Windows 95 default |
||
1024 | begin |
||
1025 | gpSetting := TRecycleBinManager.RecyclerGroupPolicyRecycleBinSize; |
||
1026 | if gpSetting <> -1 then |
||
1027 | result := gpSetting / 100 |
||
1028 | else if TRecycleBinManager.UsesGlobalSettings then |
||
1029 | result := TRecycleBinManager.GetGlobalMaxPercentUsage / 100 |
||
1030 | else if OldCapacityPercent(rel) then |
||
1031 | begin |
||
1032 | result := rel / 100; |
||
1033 | end |
||
1034 | else if NewCapacityAbsolute(abs) then |
||
1035 | begin |
||
1036 | result := abs / DiskSize; |
||
1037 | end |
||
1038 | else |
||
1039 | begin |
||
1040 | result := DEFAULT_PERCENT / 100; |
||
1041 | end; |
||
1042 | end; |
||
1043 | |||
1044 | function TRbDrive.GetMaxAbsoluteUsage: integer; |
||
1045 | var |
||
1046 | abs: integer; // in MB |
||
1047 | rel: integer; // in % (0-100) |
||
1048 | gpSetting: integer; |
||
1049 | const |
||
1050 | DEFAULT_PERCENT = 10; // Windows 95 default |
||
1051 | begin |
||
1052 | gpSetting := TRecycleBinManager.RecyclerGroupPolicyRecycleBinSize; |
||
1053 | if gpSetting <> -1 then |
||
1054 | result := Ceil(gpSetting/100 * DiskSize) |
||
1055 | else if TRecycleBinManager.UsesGlobalSettings then |
||
1056 | result := Ceil(TRecycleBinManager.GetGlobalMaxPercentUsage/100 * DiskSize) |
||
1057 | else if NewCapacityAbsolute(abs) then |
||
1058 | begin |
||
1059 | result := abs; |
||
1060 | end |
||
1061 | else if OldCapacityPercent(rel) then |
||
1062 | begin |
||
1063 | result := Ceil(rel/100 * DiskSize); |
||
1064 | end |
||
1065 | else |
||
1066 | begin |
||
1067 | result := Ceil(DEFAULT_PERCENT/100 * DiskSize); |
||
1068 | end; |
||
1069 | end; |
||
1070 | |||
1071 | function TRbDrive.OldCapacityPercent(var res: integer): boolean; |
||
1072 | var |
||
75 | daniel-mar | 1073 | reg: TRegistry; |
1074 | purgeInfo: TRbWin95PurgeInfo; |
||
1075 | begin |
||
78 | daniel-mar | 1076 | if Win32MajorVersion >= 6 then |
1077 | begin |
||
1078 | // Only available till Windows XP |
||
1079 | result := false; |
||
1080 | exit; |
||
1081 | end; |
||
75 | daniel-mar | 1082 | |
78 | daniel-mar | 1083 | result := false; |
1084 | |||
75 | daniel-mar | 1085 | reg := TRegistry.Create; |
1086 | try |
||
1087 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1088 | |||
1089 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1090 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1091 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
1092 | begin |
||
1093 | if reg.OpenKeyReadOnly(FDriveLetter) then |
||
1094 | begin |
||
1095 | if reg.ValueExists('Percent') then |
||
1096 | begin |
||
1097 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
1098 | |||
78 | daniel-mar | 1099 | res := reg.ReadInteger('Percent'); |
1100 | result := true; |
||
75 | daniel-mar | 1101 | end; |
1102 | end |
||
1103 | else |
||
1104 | begin |
||
1105 | if reg.ValueExists('PurgeInfo') then |
||
1106 | begin |
||
1107 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
1108 | |||
1109 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
||
1110 | |||
78 | daniel-mar | 1111 | res := purgeInfo.percentDrive[FDriveLetter]; |
1112 | result := true; |
||
75 | daniel-mar | 1113 | end; |
1114 | end; |
||
1115 | |||
1116 | reg.CloseKey; |
||
1117 | end; |
||
1118 | finally |
||
1119 | reg.Free; |
||
1120 | end; |
||
1121 | end; |
||
1122 | |||
78 | daniel-mar | 1123 | function TRbDrive.NewCapacityAbsolute(var res: integer): boolean; |
75 | daniel-mar | 1124 | var |
78 | daniel-mar | 1125 | reg: TRegistry; |
75 | daniel-mar | 1126 | begin |
78 | daniel-mar | 1127 | if Win32MajorVersion < 6 then |
1128 | begin |
||
1129 | // Only available since Windows Vista |
||
1130 | result := false; |
||
1131 | exit; |
||
1132 | end; |
||
75 | daniel-mar | 1133 | |
78 | daniel-mar | 1134 | result := false; |
1135 | |||
1136 | reg := TRegistry.Create; |
||
1137 | try |
||
1138 | reg.RootKey := HKEY_CURRENT_USER; |
||
1139 | |||
1140 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Explorer\BitBucket\Volume') then |
||
1141 | begin |
||
1142 | // Windows Vista and upwards |
||
1143 | if reg.OpenKeyReadOnly(GUIDToString(VolumeGUID)) then |
||
1144 | begin |
||
1145 | res := reg.ReadInteger('MaxCapacity'); // in MB |
||
1146 | result := true; |
||
1147 | end; |
||
1148 | reg.CloseKey; |
||
1149 | end; |
||
1150 | finally |
||
1151 | reg.Free; |
||
1152 | end; |
||
75 | daniel-mar | 1153 | end; |
1154 | |||
1155 | function TRbDrive.GetNukeOnDelete: boolean; |
||
1156 | var |
||
1157 | reg: TRegistry; |
||
1158 | purgeInfo: TRbWin95PurgeInfo; |
||
1159 | const |
||
78 | daniel-mar | 1160 | RES_DEFAULT = false; // Windows 95 default |
75 | daniel-mar | 1161 | begin |
78 | daniel-mar | 1162 | if TRecycleBinManager.RecyclerGroupPolicyNoRecycleFiles = gpEnabled then |
1163 | result := true |
||
1164 | else if TRecycleBinManager.UsesGlobalSettings then |
||
1165 | result := TRecycleBinManager.GetGlobalNukeOnDelete |
||
1166 | else |
||
1167 | begin |
||
1168 | result := RES_DEFAULT; |
||
75 | daniel-mar | 1169 | |
78 | daniel-mar | 1170 | reg := TRegistry.Create; |
1171 | try |
||
1172 | reg.RootKey := HKEY_CURRENT_USER; |
||
75 | daniel-mar | 1173 | |
78 | daniel-mar | 1174 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Explorer\BitBucket\Volume') then |
75 | daniel-mar | 1175 | begin |
78 | daniel-mar | 1176 | // Windows Vista and upwards |
1177 | if reg.OpenKeyReadOnly(GUIDToString(VolumeGUID)) then |
||
75 | daniel-mar | 1178 | begin |
1179 | result := reg.ReadBool('NukeOnDelete'); |
||
1180 | end; |
||
78 | daniel-mar | 1181 | reg.CloseKey; |
75 | daniel-mar | 1182 | end |
1183 | else |
||
1184 | begin |
||
78 | daniel-mar | 1185 | reg.RootKey := HKEY_LOCAL_MACHINE; |
1186 | |||
1187 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1188 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1189 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
75 | daniel-mar | 1190 | begin |
78 | daniel-mar | 1191 | if reg.OpenKeyReadOnly(FDriveLetter) then |
1192 | begin |
||
1193 | if reg.ValueExists('NukeOnDelete') then |
||
1194 | begin |
||
1195 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
75 | daniel-mar | 1196 | |
78 | daniel-mar | 1197 | result := reg.ReadBool('NukeOnDelete'); |
1198 | end; |
||
1199 | end |
||
1200 | else |
||
1201 | begin |
||
1202 | if reg.ValueExists('PurgeInfo') then |
||
1203 | begin |
||
1204 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
75 | daniel-mar | 1205 | |
78 | daniel-mar | 1206 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
1207 | |||
1208 | result := ((purgeInfo.NukeOnDeleteBits shr DriveNumber) and 1) = 1; |
||
1209 | end; |
||
1210 | end; |
||
1211 | |||
1212 | reg.CloseKey; |
||
75 | daniel-mar | 1213 | end; |
1214 | end; |
||
78 | daniel-mar | 1215 | finally |
1216 | reg.Free; |
||
75 | daniel-mar | 1217 | end; |
1218 | end; |
||
1219 | end; |
||
1220 | |||
1221 | function TRbDrive.GetNumItems: int64; |
||
1222 | begin |
||
1223 | result := GetAPIInfo.i64NumItems; |
||
1224 | end; |
||
1225 | |||
1226 | function TRbDrive.GetSize: int64; |
||
1227 | begin |
||
1228 | result := GetAPIInfo.i64Size; |
||
1229 | end; |
||
1230 | |||
1231 | function TRbDrive.GetVolumeGUID: TGUID; |
||
1232 | begin |
||
1233 | if GetDriveGUID(FDriveLetter, result) <> ERROR_SUCCESS then |
||
1234 | begin |
||
1235 | result := NULL_GUID; |
||
1236 | end; |
||
1237 | end; |
||
1238 | |||
77 | daniel-mar | 1239 | function TRbDrive.GetVolumeGUIDAvailable: boolean; |
1240 | begin |
||
1241 | result := not IsEqualGUID(VolumeGUID, NULL_GUID); |
||
1242 | end; |
||
1243 | |||
75 | daniel-mar | 1244 | function TRbDrive.IsEmpty: boolean; |
1245 | begin |
||
1246 | result := GetNumItems = 0; |
||
1247 | end; |
||
1248 | |||
1249 | function TRbDrive.IsFAT: boolean; |
||
1250 | var |
||
1251 | Dummy2: DWORD; |
||
1252 | Dummy3: DWORD; |
||
1253 | FileSystem: array[0..MAX_PATH] of char; |
||
1254 | VolumeName: array[0..MAX_PATH] of char; |
||
1255 | s: string; |
||
1256 | begin |
||
1257 | s := FDriveLetter + DriveDelim + PathDelim; // ohne die Auslagerung in einen String kommt es zu einer AV in ntdll |
||
1258 | GetVolumeInformation(PChar(s), VolumeName, |
||
1259 | SizeOf(VolumeName), nil, Dummy2, Dummy3, FileSystem, SizeOf(FileSystem)); |
||
1260 | result := uppercase(copy(FileSystem, 0, 3)) = 'FAT'; |
||
1261 | end; |
||
1262 | |||
1263 | procedure TRbDrive.ListRecycleBins(list: TObjectList{TRbRecycleBin}; UserSID: string=''); |
||
1264 | |||
1265 | procedure _AddSIDFolders(dir: string; wholeFolder: boolean); |
||
1266 | var |
||
1267 | SR: TSearchRec; |
||
1268 | begin |
||
1269 | dir := IncludeTrailingPathDelimiter(dir); |
||
1270 | if FindFirst(dir+'S-*', faAnyFile, SR) = 0 then |
||
1271 | begin |
||
1272 | try |
||
1273 | repeat |
||
1274 | if (SR.Name = '.') or (SR.Name = '..') or not DirectoryExists(dir + SR.Name) then continue; |
||
1275 | |||
1276 | if wholeFolder then |
||
1277 | begin |
||
1278 | // Vista |
||
1279 | list.Add(TRbRecycleBin.Create(dir+SR.Name, SR.Name)); |
||
1280 | end |
||
1281 | else |
||
1282 | begin |
||
1283 | // Win95 .. WinXP |
||
1284 | if FileExists(IncludeTrailingPathDelimiter(dir+SR.Name) + 'INFO2') then |
||
1285 | list.Add(TRbRecycleBin.Create(IncludeTrailingPathDelimiter(dir+SR.Name) + 'INFO2', SR.Name)); |
||
1286 | if FileExists(IncludeTrailingPathDelimiter(dir+SR.Name) + 'INFO') then |
||
1287 | list.Add(TRbRecycleBin.Create(IncludeTrailingPathDelimiter(dir+SR.Name) + 'INFO', SR.Name)); |
||
1288 | end; |
||
1289 | until FindNext(SR) <> 0; |
||
1290 | finally |
||
1291 | FindClose(SR); |
||
1292 | end; |
||
1293 | end; |
||
1294 | end; |
||
1295 | |||
1296 | var |
||
1297 | dir: string; |
||
1298 | begin |
||
1299 | // Find recyclers from Windows Vista or higher |
||
1300 | |||
1301 | if IsFAT then |
||
1302 | begin |
||
1303 | dir := FDriveLetter + DriveDelim + PathDelim + '$recycle.bin' + PathDelim; |
||
1304 | if DirectoryExists(dir) then |
||
1305 | begin |
||
1306 | list.Add(TRbRecycleBin.Create(dir)); |
||
1307 | end; |
||
1308 | end |
||
1309 | else |
||
1310 | begin |
||
1311 | if UserSID <> '' then |
||
1312 | begin |
||
1313 | dir := FDriveLetter + DriveDelim + PathDelim + '$recycle.bin' + PathDelim + UserSID + PathDelim; |
||
1314 | if DirectoryExists(dir) then |
||
1315 | begin |
||
1316 | list.Add(TRbRecycleBin.Create(dir, UserSID)); |
||
1317 | end; |
||
1318 | end |
||
1319 | else |
||
1320 | begin |
||
1321 | _AddSIDFolders(FDriveLetter + DriveDelim + PathDelim + '$recycle.bin', true); |
||
1322 | end; |
||
1323 | end; |
||
1324 | |||
1325 | // Find recyclers from Windows before Vista |
||
1326 | |||
1327 | if IsFAT then |
||
1328 | begin |
||
1329 | dir := FDriveLetter + DriveDelim + PathDelim + 'Recycled' + PathDelim; |
||
1330 | |||
1331 | // Both "recycle bins" are possible if you have multiboot (but do overwrite themselfes if you empty them) |
||
1332 | if FileExists(dir + 'INFO2') then |
||
76 | daniel-mar | 1333 | list.Add(TRbRecycleBin.Create(dir + 'INFO2')); // Windows 95 with Internet Explorer 4 Extension or higher Windows 9x versions |
75 | daniel-mar | 1334 | if FileExists(dir + 'INFO') then |
1335 | list.Add(TRbRecycleBin.Create(dir + 'INFO')); // Windows 95 native |
||
1336 | end |
||
1337 | else |
||
1338 | begin |
||
1339 | if UserSID <> '' then |
||
1340 | begin |
||
1341 | dir := FDriveLetter + DriveDelim + PathDelim + 'Recycler' + PathDelim + UserSID + PathDelim; |
||
1342 | |||
1343 | if FileExists(dir + 'INFO2') then |
||
76 | daniel-mar | 1344 | list.Add(TRbRecycleBin.Create(dir + 'INFO2', UserSID)); // Windows 2000+ |
75 | daniel-mar | 1345 | if FileExists(dir + 'INFO') then |
1346 | list.Add(TRbRecycleBin.Create(dir + 'INFO', UserSID)); // Windows NT 4 |
||
1347 | end |
||
1348 | else |
||
1349 | begin |
||
1350 | _AddSIDFolders(FDriveLetter + DriveDelim + PathDelim + 'Recycler', false); |
||
1351 | end; |
||
1352 | end; |
||
1353 | end; |
||
1354 | |||
76 | daniel-mar | 1355 | { TRbInfoAItem } |
75 | daniel-mar | 1356 | |
76 | daniel-mar | 1357 | procedure TRbInfoAItem.ReadFromStream(stream: TStream); |
75 | daniel-mar | 1358 | var |
76 | daniel-mar | 1359 | r: TRbInfoRecordA; |
75 | daniel-mar | 1360 | begin |
1361 | stream.ReadBuffer(r, SizeOf(r)); |
||
1362 | |||
1363 | FSourceDrive := Chr(Ord('A') + r.sourceDrive); |
||
1364 | |||
76 | daniel-mar | 1365 | // Win95 with IE4 and Win2000+: |
1366 | // Wenn ein Eintrag aus der INFO/INFO2 gelöscht wird, dann wird das erste Byte |
||
1367 | // von sourceAnsi auf Null gesetzt, damit die ganze INFO/INFO2 Datei nicht |
||
1368 | // ständig neu geschrieben werden muss (so wie es bei Win95 und WinNT4 der Fall war). |
||
1369 | // Wir lesen den Eintrag trotzdem, da unsere Software ja auch zu forensischen |
||
1370 | // Zwecken eingesetzt werden soll. |
||
75 | daniel-mar | 1371 | if r.sourceAnsi[0] = #0 then |
1372 | begin |
||
1373 | FRemovedEntry := true; |
||
1374 | r.sourceAnsi[0] := FSourceDrive; |
||
1375 | end; |
||
1376 | |||
1377 | FSourceAnsi := r.sourceAnsi; |
||
1378 | FSourceUnicode := r.sourceAnsi; // Unicode does not exist in INFO(1) structure |
||
1379 | FID := IntToStr(r.recordNumber); |
||
1380 | FDeletionTime := FileTimeToDateTime(r.deletionTime); |
||
1381 | FOriginalSize := r.originalSize; |
||
1382 | end; |
||
1383 | |||
76 | daniel-mar | 1384 | function TRbInfoAItem.DeleteFile: boolean; |
75 | daniel-mar | 1385 | var |
1386 | r: string; |
||
1387 | begin |
||
1388 | r := GetPhysicalFile; |
||
1389 | if DirectoryExists(r) then |
||
1390 | result := DeleteDirectory(r) // Usually, the old recycle bin does not allow folders. Just to be sure, we include the code. |
||
1391 | else |
||
1392 | result := SysUtils.DeleteFile(r); // TODO: geht das oder gibt es zugriffsverletzung? --> Win95: Funktioniert |
||
1393 | |||
1394 | // TODO: nun auch den eintrag aus der INFO-Datei rausschmeißen (Datei neu schreiben) |
||
1395 | end; |
||
1396 | |||
76 | daniel-mar | 1397 | function TRbInfoAItem.GetPhysicalFile: string; |
75 | daniel-mar | 1398 | begin |
1399 | if FRemovedEntry then |
||
1400 | begin |
||
1401 | result := ''; |
||
1402 | Exit; |
||
1403 | end; |
||
1404 | |||
1405 | // e.g. C:\...\DC0.doc |
||
1406 | result := IncludeTrailingPathDelimiter(ExtractFilePath(IndexFile)) + |
||
76 | daniel-mar | 1407 | 'D' + (* SourceDrive *) SourceAnsi[1] + ID + ExtractFileExt(SourceAnsi); |
75 | daniel-mar | 1408 | end; |
1409 | |||
76 | daniel-mar | 1410 | constructor TRbInfoAItem.Create(fs: TStream; AIndexFile: string); |
75 | daniel-mar | 1411 | begin |
1412 | inherited Create; |
||
1413 | ReadFromStream(fs); |
||
1414 | FIndexFile := AIndexFile; |
||
1415 | end; |
||
1416 | |||
76 | daniel-mar | 1417 | { TRbInfoWItem } |
75 | daniel-mar | 1418 | |
76 | daniel-mar | 1419 | procedure TRbInfoWItem.ReadFromStream(stream: TStream); |
75 | daniel-mar | 1420 | var |
76 | daniel-mar | 1421 | r: TRbInfoRecordW; |
75 | daniel-mar | 1422 | begin |
1423 | stream.ReadBuffer(r, SizeOf(r)); |
||
1424 | |||
76 | daniel-mar | 1425 | // Win95 with IE4 and Win2000+: |
1426 | // Wenn ein Eintrag aus der INFO/INFO2 gelöscht wird, dann wird das erste Byte |
||
1427 | // von sourceAnsi auf Null gesetzt, damit die ganze INFO/INFO2 Datei nicht |
||
1428 | // ständig neu geschrieben werden muss (so wie es bei Win95 und WinNT4 der Fall war). |
||
75 | daniel-mar | 1429 | // Wir lesen den Eintrag trotzdem, da unsere Software ja auch zu forensischen |
1430 | // Zwecken eingesetzt werden soll. |
||
1431 | if r.sourceAnsi[0] = #0 then |
||
1432 | begin |
||
1433 | FRemovedEntry := true; |
||
1434 | r.sourceAnsi[0] := AnsiChar(r.sourceUnicode[0]); |
||
1435 | end; |
||
1436 | |||
1437 | FSourceAnsi := r.sourceAnsi; |
||
1438 | FSourceUnicode := r.sourceUnicode; |
||
1439 | FID := IntToStr(r.recordNumber); |
||
1440 | FSourceDrive := Chr(Ord('A') + r.sourceDrive); |
||
1441 | FDeletionTime := FileTimeToDateTime(r.deletionTime); |
||
1442 | FOriginalSize := r.originalSize; |
||
1443 | end; |
||
1444 | |||
76 | daniel-mar | 1445 | function TRbInfoWItem.DeleteFile: boolean; |
75 | daniel-mar | 1446 | var |
1447 | r: string; |
||
1448 | begin |
||
1449 | r := GetPhysicalFile; |
||
1450 | if DirectoryExists(r) then |
||
1451 | result := DeleteDirectory(r) |
||
1452 | else |
||
1453 | result := SysUtils.DeleteFile(r); // TODO: geht das oder gibt es zugriffsverletzung? |
||
1454 | |||
1455 | // TODO: nun auch den eintrag aus der INFO-Datei rausschmeißen (Erstes Byte auf 0 setzen) |
||
1456 | end; |
||
1457 | |||
76 | daniel-mar | 1458 | function TRbInfoWItem.GetPhysicalFile: string; |
75 | daniel-mar | 1459 | begin |
1460 | if FRemovedEntry then |
||
1461 | begin |
||
1462 | result := ''; |
||
1463 | Exit; |
||
1464 | end; |
||
1465 | |||
76 | daniel-mar | 1466 | (* |
1467 | This is actually a bit tricky... |
||
1468 | Win95 will choose the first letter of the AnsiSource name. |
||
1469 | WinNT will choose the first letter of the UnicodeSource name. |
||
1470 | WinXP will choose the driveNumber member. |
||
1471 | |||
1472 | Windows XP is kinda buggy when it comes to changing a drive letter. |
||
1473 | For example, the drive E: was changed to K: |
||
1474 | The drive letter is 04 (E), the Source name begins with E:\ and the physical file is De0.txt . |
||
1475 | After the recycle bin is opened the first time: |
||
1476 | - The recycle bin will show the file origin as K:\ and not as E:\ |
||
1477 | - The file was renamed from De0.txt to Dk0.txt |
||
1478 | - The file can be recovered at this time |
||
1479 | When the recycle bin is closed, the INFO2 file will not be corrected (which is a bug). |
||
1480 | So, if you open the recycle bin again, the record will be marked |
||
1481 | as deleted in the INFO file (the first byte will be set to 0), |
||
1482 | because Windows searches for De0.txt and doesn't find it. |
||
1483 | |||
1484 | (This comment also applies to TRbInfoAItem.GetPhysicalFile) |
||
1485 | *) |
||
1486 | |||
75 | daniel-mar | 1487 | // e.g. C:\...\DC0.doc |
1488 | result := IncludeTrailingPathDelimiter(ExtractFilePath(IndexFile)) + |
||
76 | daniel-mar | 1489 | 'D' + SourceDrive (* SourceUnicode[1] *) + ID + ExtractFileExt(SourceUnicode); |
75 | daniel-mar | 1490 | end; |
1491 | |||
76 | daniel-mar | 1492 | constructor TRbInfoWItem.Create(fs: TStream; AIndexFile: string); |
75 | daniel-mar | 1493 | begin |
1494 | inherited Create; |
||
1495 | ReadFromStream(fs); |
||
1496 | FIndexFile := AIndexFile; |
||
1497 | end; |
||
1498 | |||
1499 | { TRbVistaItem } |
||
1500 | |||
1501 | procedure TRbVistaItem.ReadFromStream(stream: TStream); |
||
1502 | var |
||
1503 | r: TRbVistaRecord; |
||
1504 | begin |
||
1505 | stream.ReadBuffer(r, SizeOf(r)); |
||
1506 | |||
1507 | FSourceAnsi := AnsiString(r.sourceUnicode); // Invalid chars are automatically converted into '?' |
||
1508 | FSourceUnicode := r.sourceUnicode; |
||
1509 | FID := ''; // will be added manually (at the constructor) |
||
1510 | FSourceDrive := AnsiChar(r.sourceUnicode[1]); |
||
1511 | FDeletionTime := FileTimeToDateTime(r.deletionTime); |
||
1512 | FOriginalSize := r.originalSize; |
||
1513 | end; |
||
1514 | |||
1515 | function TRbVistaItem.DeleteFile: boolean; |
||
1516 | var |
||
1517 | r: string; |
||
1518 | begin |
||
1519 | r := GetPhysicalFile; |
||
1520 | if DirectoryExists(r) then |
||
1521 | result := DeleteDirectory(r) |
||
1522 | else |
||
1523 | result := SysUtils.DeleteFile(r); |
||
1524 | |||
1525 | SysUtils.DeleteFile(FIndexFile); |
||
1526 | end; |
||
1527 | |||
1528 | function TRbVistaItem.GetPhysicalFile: string; |
||
1529 | begin |
||
1530 | result := FIndexFile; |
||
1531 | result := StringReplace(Result, '$I', '$R', [rfIgnoreCase]); |
||
1532 | end; |
||
1533 | |||
1534 | constructor TRbVistaItem.Create(fs: TStream; AIndexFile, AID: string); |
||
1535 | begin |
||
1536 | inherited Create; |
||
1537 | ReadFromStream(fs); |
||
1538 | FIndexFile := AIndexFile; |
||
1539 | FID := AID; |
||
1540 | end; |
||
1541 | |||
1542 | { TRecycleBinManager } |
||
1543 | |||
1544 | class function TRecycleBinManager.EmptyOwnRecyclers(flags: cardinal): boolean; |
||
1545 | var |
||
1546 | PSHEmptyRecycleBin: TSHEmptyRecycleBin; |
||
1547 | LibHandle: THandle; |
||
1548 | begin |
||
1549 | // Source: http://www.dsdt.info/tipps/?id=176 |
||
1550 | result := true; |
||
1551 | LibHandle := LoadLibrary(shell32); |
||
1552 | try |
||
1553 | if LibHandle <> 0 then |
||
1554 | begin |
||
1555 | @PSHEmptyRecycleBin := GetProcAddress(LibHandle, C_SHEmptyRecycleBinA); |
||
1556 | if @PSHEmptyRecycleBin <> nil then |
||
1557 | begin |
||
1558 | PSHEmptyRecycleBin(hInstance, nil, flags); |
||
1559 | end |
||
1560 | else |
||
1561 | result := false; |
||
1562 | end |
||
1563 | else |
||
1564 | result := false; |
||
1565 | finally |
||
1566 | @PSHEmptyRecycleBin := nil; |
||
1567 | if LibHandle <> 0 then FreeLibrary(LibHandle); |
||
1568 | end; |
||
1569 | end; |
||
1570 | |||
1571 | class function TRecycleBinManager.EmptyOwnRecyclers(sound, progress, confirmation: boolean): boolean; |
||
1572 | const |
||
1573 | SHERB_NOCONFIRMATION = $00000001; |
||
1574 | SHERB_NOPROGRESSUI = $00000002; |
||
1575 | SHERB_NOSOUND = $00000004; |
||
1576 | var |
||
1577 | flags: cardinal; |
||
1578 | begin |
||
1579 | flags := 0; |
||
1580 | |||
1581 | if not progress then |
||
1582 | flags := flags or SHERB_NOPROGRESSUI; |
||
1583 | if not confirmation then |
||
1584 | flags := flags or SHERB_NOCONFIRMATION; |
||
1585 | if not sound then |
||
1586 | flags := flags or SHERB_NOSOUND; |
||
1587 | |||
1588 | result := EmptyOwnRecyclers(flags); |
||
1589 | end; |
||
1590 | |||
1591 | class function TRecycleBinManager.GetGlobalMaxPercentUsage: integer; |
||
1592 | var |
||
1593 | reg: TRegistry; |
||
1594 | purgeInfo: TRbWin95PurgeInfo; |
||
1595 | const |
||
1596 | RES_DEFAULT = 10; // Windows 95 - Standardwert |
||
1597 | begin |
||
78 | daniel-mar | 1598 | if Win32MajorVersion >= 6 then |
1599 | begin |
||
1600 | // Only available till Windows XP |
||
1601 | result := -1; |
||
1602 | exit; |
||
1603 | end; |
||
1604 | |||
75 | daniel-mar | 1605 | result := RES_DEFAULT; |
1606 | |||
1607 | reg := TRegistry.Create; |
||
1608 | try |
||
1609 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1610 | |||
1611 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1612 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1613 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
1614 | begin |
||
1615 | if reg.ValueExists('Percent') then |
||
1616 | begin |
||
1617 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
1618 | |||
1619 | result := reg.ReadInteger('Percent'); |
||
1620 | end |
||
1621 | else if reg.ValueExists('PurgeInfo') then |
||
1622 | begin |
||
1623 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
1624 | |||
1625 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
||
1626 | result := purgeInfo.percentGlobal; |
||
1627 | end; |
||
1628 | |||
1629 | reg.CloseKey; |
||
1630 | end; |
||
1631 | finally |
||
1632 | reg.Free; |
||
1633 | end; |
||
1634 | end; |
||
1635 | |||
1636 | class function TRecycleBinManager.GetGlobalNukeOnDelete: boolean; |
||
1637 | var |
||
1638 | reg: TRegistry; |
||
1639 | purgeInfo: TRbWin95PurgeInfo; |
||
1640 | const |
||
1641 | RES_DEFAULT = false; // Windows 95 - Standardwert |
||
1642 | begin |
||
78 | daniel-mar | 1643 | if Win32MajorVersion >= 6 then |
1644 | begin |
||
1645 | // Only available till Windows XP |
||
1646 | result := false; |
||
1647 | exit; |
||
1648 | end; |
||
1649 | |||
75 | daniel-mar | 1650 | result := RES_DEFAULT; |
1651 | |||
1652 | reg := TRegistry.Create; |
||
1653 | try |
||
1654 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1655 | |||
1656 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1657 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1658 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
1659 | begin |
||
1660 | if reg.ValueExists('NukeOnDelete') then |
||
1661 | begin |
||
1662 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
1663 | |||
1664 | result := reg.ReadBool('NukeOnDelete'); |
||
1665 | end |
||
1666 | else if reg.ValueExists('PurgeInfo') then |
||
1667 | begin |
||
1668 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
1669 | |||
1670 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
||
1671 | result := (purgeInfo.NukeOnDeleteBits and $8000000) = $8000000; // bit 27 |
||
1672 | end; |
||
1673 | |||
1674 | reg.CloseKey; |
||
1675 | end; |
||
1676 | finally |
||
1677 | reg.Free; |
||
1678 | end; |
||
1679 | end; |
||
1680 | |||
76 | daniel-mar | 1681 | (* TODO: |
1682 | There are more registry values (found in WinXP): |
||
1683 | |||
1684 | BitBucket\<driveletter> |
||
1685 | VolumeSerialNumber |
||
1686 | IsUnicode |
||
1687 | |||
1688 | *) |
||
1689 | |||
75 | daniel-mar | 1690 | class function TRecycleBinManager.UsesGlobalSettings: boolean; |
1691 | var |
||
1692 | reg: TRegistry; |
||
1693 | purgeInfo: TRbWin95PurgeInfo; |
||
1694 | const |
||
1695 | RES_DEFAULT = true; // Windows 95 - Standardwert |
||
1696 | begin |
||
78 | daniel-mar | 1697 | if Win32MajorVersion >= 6 then |
1698 | begin |
||
1699 | // Only available till Windows XP |
||
1700 | result := false; |
||
1701 | exit; |
||
1702 | end; |
||
1703 | |||
75 | daniel-mar | 1704 | result := RES_DEFAULT; |
1705 | |||
1706 | reg := TRegistry.Create; |
||
1707 | try |
||
1708 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
1709 | |||
1710 | // Im Auslieferungszustand von Windows 95 ist dieser Schlüssel nicht vorhanden. |
||
1711 | // Er wird bei der ersten Änderung der Papierkorb-Einstellungen erstellt. |
||
1712 | if reg.OpenKeyReadOnly('SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\BitBucket') then |
||
1713 | begin |
||
1714 | if reg.ValueExists('UseGlobalSettings') then |
||
1715 | begin |
||
1716 | // Windows 2000 - Informationen liegen aufgeschlüsselt in der Registry |
||
1717 | |||
1718 | result := reg.ReadBool('UseGlobalSettings'); |
||
1719 | end |
||
1720 | else if reg.ValueExists('PurgeInfo') then |
||
1721 | begin |
||
1722 | // Windows 95 - Kodierte Informationen liegen in PurgeInfo |
||
1723 | |||
1724 | reg.ReadBinaryData('PurgeInfo', purgeInfo, SizeOf(purgeInfo)); |
||
1725 | result := purgeInfo.bGlobalSettings; |
||
1726 | end; |
||
1727 | |||
1728 | reg.CloseKey; |
||
1729 | end; |
||
1730 | finally |
||
1731 | reg.Free; |
||
1732 | end; |
||
1733 | end; |
||
1734 | |||
1735 | class procedure TRecycleBinManager.ListDrives(list: TObjectList{TRbDrive}); |
||
1736 | var |
||
1737 | drive: Char; |
||
1738 | begin |
||
1739 | for drive := 'A' to 'Z' do |
||
1740 | if RecycleBinPossible(drive) then |
||
1741 | list.Add(TRbDrive.Create(drive)); |
||
1742 | end; |
||
1743 | |||
1744 | class function TRecycleBinManager.OwnRecyclersEmpty: boolean; |
||
1745 | var |
||
1746 | drives: TObjectList; |
||
1747 | i: integer; |
||
1748 | begin |
||
1749 | result := true; |
||
1750 | |||
1751 | drives := TObjectList.Create(true); |
||
1752 | try |
||
1753 | ListDrives(drives); |
||
1754 | for i := 0 to drives.Count - 1 do |
||
1755 | begin |
||
1756 | result := result and TRbDrive(drives.Items[i]).IsEmpty; |
||
1757 | if not result then break; |
||
1758 | end; |
||
1759 | finally |
||
1760 | drives.Free; |
||
1761 | end; |
||
1762 | end; |
||
1763 | |||
1764 | class function TRecycleBinManager.OwnRecyclersNumItems: int64; |
||
1765 | var |
||
1766 | drives: TObjectList; |
||
1767 | i: integer; |
||
1768 | begin |
||
1769 | result := 0; |
||
1770 | |||
1771 | drives := TObjectList.Create(true); |
||
1772 | try |
||
1773 | ListDrives(drives); |
||
1774 | for i := 0 to drives.Count - 1 do |
||
1775 | begin |
||
1776 | result := result + TRbDrive(drives.Items[i]).GetNumItems; |
||
1777 | end; |
||
1778 | finally |
||
1779 | drives.Free; |
||
1780 | end; |
||
1781 | end; |
||
1782 | |||
1783 | class function TRecycleBinManager.OwnRecyclersSize: int64; |
||
1784 | var |
||
1785 | drives: TObjectList; |
||
1786 | i: integer; |
||
1787 | begin |
||
1788 | result := 0; |
||
1789 | |||
1790 | drives := TObjectList.Create(true); |
||
1791 | try |
||
1792 | ListDrives(drives); |
||
1793 | for i := 0 to drives.Count - 1 do |
||
1794 | begin |
||
1795 | result := result + TRbDrive(drives.Items[i]).GetSize; |
||
1796 | end; |
||
1797 | finally |
||
1798 | drives.Free; |
||
1799 | end; |
||
1800 | end; |
||
1801 | |||
1802 | class function TRecycleBinManager.RecycleBinPossible(Drive: Char): boolean; |
||
1803 | var |
||
1804 | typ: Integer; |
||
1805 | begin |
||
1806 | // Does the drive exist? |
||
1807 | // see http://www.delphipraxis.net/post2933.html |
||
1808 | result := GetLogicalDrives and (1 shl DriveLetterToDriveNumber(Drive)) <> 0; |
||
1809 | if not result then exit; |
||
1810 | |||
1811 | // Is it a fixed drive? (Only they can have recycle bins) |
||
1812 | // TODO: is that correct, or can also have other drive types have recyclers? |
||
1813 | typ := GetDriveType(PChar(Drive + ':\')); |
||
1814 | result := typ = DRIVE_FIXED; |
||
1815 | end; |
||
1816 | |||
1817 | class function TRecycleBinManager.RecyclerGetCurrentIconString: string; |
||
1818 | begin |
||
1819 | if OwnRecyclersEmpty then |
||
1820 | result := RecyclerGetEmptyIconString |
||
1821 | else |
||
1822 | result := RecyclerGetFullIconString; |
||
1823 | end; |
||
1824 | |||
1825 | class function TRecycleBinManager.RecyclerGetDefaultIconString: string; |
||
1826 | var |
||
1827 | reg: TRegistry; |
||
1828 | begin |
||
1829 | // Please note: The "default" icon is not always the icon of the |
||
1830 | // current recycle bin in its current state (full, empty) |
||
1831 | // At Windows 95b, the registry value actually did change every time the |
||
1832 | // recycle bin state did change, but at Windows 2000 I could not see any |
||
1833 | // update, even after reboot. So, the registry value is possible fixed as |
||
1834 | // default = empty on newer OS versions. |
||
1835 | |||
1836 | reg := TRegistry.Create; |
||
1837 | try |
||
1838 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1839 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)+'\DefaultIcon') then |
||
1840 | begin |
||
1841 | result := reg.ReadString(''); |
||
1842 | reg.CloseKey; |
||
1843 | end; |
||
1844 | finally |
||
1845 | reg.Free; |
||
1846 | end; |
||
1847 | end; |
||
1848 | |||
1849 | class function TRecycleBinManager.RecyclerGetEmptyIconString: string; |
||
1850 | var |
||
1851 | reg: TRegistry; |
||
1852 | begin |
||
1853 | reg := TRegistry.Create; |
||
1854 | try |
||
1855 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1856 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)+'\DefaultIcon') then |
||
1857 | begin |
||
1858 | result := reg.ReadString('Empty'); |
||
1859 | reg.CloseKey; |
||
1860 | end; |
||
1861 | finally |
||
1862 | reg.Free; |
||
1863 | end; |
||
1864 | end; |
||
1865 | |||
1866 | class function TRecycleBinManager.RecyclerGetFullIconString: string; |
||
1867 | var |
||
1868 | reg: TRegistry; |
||
1869 | begin |
||
1870 | reg := TRegistry.Create; |
||
1871 | try |
||
1872 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1873 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)+'\DefaultIcon') then |
||
1874 | begin |
||
1875 | result := reg.ReadString('Full'); |
||
1876 | reg.CloseKey; |
||
1877 | end; |
||
1878 | finally |
||
1879 | reg.Free; |
||
1880 | end; |
||
1881 | end; |
||
1882 | |||
1883 | class function TRecycleBinManager.RecyclerGetInfoTip: string; |
||
1884 | var |
||
1885 | reg: TRegistry; |
||
1886 | begin |
||
1887 | // Not available in some older versions of Windows |
||
1888 | |||
1889 | reg := TRegistry.Create; |
||
1890 | try |
||
1891 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1892 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)) then |
||
1893 | begin |
||
1894 | result := reg.ReadString('InfoTip'); |
||
1895 | result := DecodeReferenceString(result); |
||
1896 | |||
1897 | reg.CloseKey; |
||
1898 | end; |
||
1899 | finally |
||
1900 | reg.Free; |
||
1901 | end; |
||
1902 | end; |
||
1903 | |||
1904 | class function TRecycleBinManager.RecyclerGetIntroText: string; |
||
1905 | var |
||
1906 | reg: TRegistry; |
||
1907 | begin |
||
1908 | // Not available in some older versions of Windows |
||
1909 | |||
1910 | reg := TRegistry.Create; |
||
1911 | try |
||
1912 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1913 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)) then |
||
1914 | begin |
||
1915 | result := reg.ReadString('IntroText'); |
||
1916 | result := DecodeReferenceString(result); |
||
1917 | |||
1918 | reg.CloseKey; |
||
1919 | end; |
||
1920 | finally |
||
1921 | reg.Free; |
||
1922 | end; |
||
1923 | end; |
||
1924 | |||
1925 | class function TRecycleBinManager.RecyclerGetName: string; |
||
1926 | var |
||
1927 | reg: TRegistry; |
||
1928 | begin |
||
1929 | // Windows 95b: |
||
1930 | // Change of CLSID\{645FF040-5081-101B-9F08-00AA002F954E} will change the desktop name of the recycle bin. |
||
1931 | |||
1932 | // Windows 2000: If LocalizedString is available, the 3rd argument will be parsed |
||
1933 | // (if the third argument will removed, it will be read out from the DLL resource string automatically) |
||
1934 | |||
1935 | reg := TRegistry.Create; |
||
1936 | try |
||
1937 | reg.RootKey := HKEY_CLASSES_ROOT; |
||
1938 | if reg.OpenKeyReadOnly('CLSID\'+GUIDToString(RECYCLER_CLSID)) then |
||
1939 | begin |
||
1940 | if reg.ValueExists('LocalizedString') then |
||
1941 | begin |
||
1942 | result := reg.ReadString('LocalizedString'); |
||
1943 | result := DecodeReferenceString(result); |
||
1944 | end |
||
1945 | else |
||
1946 | begin |
||
1947 | result := reg.ReadString(''); |
||
1948 | end; |
||
1949 | |||
1950 | reg.CloseKey; |
||
1951 | end; |
||
1952 | finally |
||
1953 | reg.Free; |
||
1954 | end; |
||
1955 | end; |
||
1956 | |||
1957 | class function TRecycleBinManager.RecyclerEmptyEventGetName: string; |
||
1958 | var |
||
1959 | reg: TRegistry; |
||
1960 | begin |
||
1961 | reg := TRegistry.Create; |
||
1962 | try |
||
1963 | reg.RootKey := HKEY_CURRENT_USER; |
||
1964 | if reg.OpenKeyReadOnly('AppEvents\EventLabels\EmptyRecycleBin') then |
||
1965 | begin |
||
1966 | result := reg.ReadString(''); |
||
1967 | reg.CloseKey; |
||
1968 | end; |
||
1969 | finally |
||
1970 | reg.Free; |
||
1971 | end; |
||
1972 | end; |
||
1973 | |||
1974 | class function TRecycleBinManager.RecyclerEmptyEventGetCurrentSound: string; |
||
1975 | begin |
||
1976 | result := RecyclerEmptyEventGetSound('.Current'); |
||
1977 | end; |
||
1978 | |||
1979 | class function TRecycleBinManager.RecyclerEmptyEventGetDefaultSound: string; |
||
1980 | begin |
||
1981 | result := RecyclerEmptyEventGetSound('.Default'); |
||
1982 | end; |
||
1983 | |||
1984 | class procedure TRecycleBinManager.RecyclerEmptyEventGetSoundCategories(AStringList: TStringList); |
||
1985 | var |
||
1986 | reg: TRegistry; |
||
1987 | begin |
||
1988 | reg := TRegistry.Create; |
||
1989 | try |
||
1990 | reg.RootKey := HKEY_CURRENT_USER; |
||
1991 | if reg.OpenKeyReadOnly('AppEvents\Schemes\Apps\Explorer\EmptyRecycleBin') then |
||
1992 | begin |
||
1993 | reg.GetKeyNames(AStringList); |
||
1994 | reg.CloseKey; |
||
1995 | end; |
||
1996 | finally |
||
1997 | reg.Free; |
||
1998 | end; |
||
1999 | end; |
||
2000 | |||
2001 | class function TRecycleBinManager.RecyclerEmptyEventGetSound(ACategory: string): string; |
||
2002 | var |
||
2003 | reg: TRegistry; |
||
2004 | resourcestring |
||
2005 | LNG_SND_EVENT_CAT_ERROR = 'The category "%s" is not available for the notification event "%s".'; |
||
2006 | begin |
||
2007 | // Outputs an filename or empty string for no sound defined. |
||
2008 | |||
2009 | reg := TRegistry.Create; |
||
2010 | try |
||
2011 | reg.RootKey := HKEY_CURRENT_USER; |
||
2012 | if reg.OpenKeyReadOnly('AppEvents\Schemes\Apps\Explorer\EmptyRecycleBin') then |
||
2013 | begin |
||
2014 | if reg.OpenKeyReadOnly(ACategory) then |
||
2015 | begin |
||
2016 | result := reg.ReadString(''); |
||
2017 | reg.CloseKey; |
||
2018 | end |
||
2019 | else |
||
2020 | raise EEventCategoryNotDefined.CreateFmt(LNG_SND_EVENT_CAT_ERROR, [ACategory, 'EmptyRecycleBin']); |
||
2021 | reg.CloseKey; |
||
2022 | end; |
||
2023 | finally |
||
2024 | reg.Free; |
||
2025 | end; |
||
2026 | end; |
||
2027 | |||
2028 | class function TRecycleBinManager.RecyclerQueryFunctionAvailable: boolean; |
||
2029 | var |
||
2030 | RBHandle: THandle; |
||
2031 | SHQueryRecycleBin: TSHQueryRecycleBin; |
||
2032 | begin |
||
2033 | // Windows 95 without Internet Explorer 4 has no SHQueryRecycleBinA. |
||
2034 | RBHandle := LoadLibrary(shell32); |
||
2035 | try |
||
2036 | if RBHandle <> 0 then |
||
2037 | begin |
||
2038 | SHQueryRecycleBin := GetProcAddress(RBHandle, C_SHQueryRecycleBin); |
||
2039 | if not Assigned(@SHQueryRecycleBin) then |
||
2040 | begin |
||
2041 | FreeLibrary(RBHandle); |
||
2042 | RBHandle := 0; |
||
2043 | end; |
||
2044 | end; |
||
2045 | |||
2046 | result := RBHandle <> 0; |
||
2047 | finally |
||
2048 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
||
2049 | end; |
||
2050 | end; |
||
2051 | |||
2052 | class function TRecycleBinManager.RecyclerAddFileOrFolder(FileOrFolder: string; confirmation: boolean=false): boolean; |
||
2053 | var |
||
2054 | Operation: TSHFileOpStruct; |
||
2055 | begin |
||
2056 | // Template: http://www.dsdt.info/tipps/?id=116 |
||
2057 | with Operation do |
||
2058 | begin |
||
2059 | Wnd := hInstance; // OK? |
||
2060 | wFunc := FO_DELETE; |
||
2061 | pFrom := PChar(FileOrFolder + #0); |
||
2062 | pTo := nil; |
||
2063 | fFlags := FOF_ALLOWUNDO; |
||
2064 | if not confirmation then fFlags := fFlags or FOF_NOCONFIRMATION; |
||
2065 | end; |
||
2066 | Result := SHFileOperation(Operation) = 0; |
||
2067 | end; |
||
2068 | |||
2069 | class function TRecycleBinManager.RecyclerGroupPolicyNoRecycleFiles: GPOLICYBOOL; |
||
2070 | var |
||
2071 | reg: TRegistry; |
||
2072 | begin |
||
2073 | result := gpUndefined; |
||
2074 | |||
2075 | reg := TRegistry.Create; |
||
2076 | try |
||
2077 | // If a value is set in HKEY_LOCAL_MACHINE, it will be prefered, |
||
2078 | // even if gpedit.msc shows "Not configured"! |
||
2079 | {$IFDEF GroupPolicyAcceptHKLMTrick} |
||
2080 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
2081 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2082 | begin |
||
2083 | if reg.ValueExists('NoRecycleFiles') then |
||
2084 | begin |
||
2085 | if reg.ReadBool('NoRecycleFiles') then |
||
2086 | result := gpEnabled |
||
2087 | else |
||
2088 | result := gpDisabled; |
||
2089 | Exit; |
||
2090 | end; |
||
2091 | reg.CloseKey; |
||
2092 | end; |
||
2093 | {$ENDIF} |
||
2094 | |||
2095 | reg.RootKey := HKEY_CURRENT_USER; |
||
2096 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2097 | begin |
||
2098 | if reg.ValueExists('NoRecycleFiles') then |
||
2099 | begin |
||
2100 | if reg.ReadBool('NoRecycleFiles') then |
||
2101 | result := gpEnabled |
||
2102 | else |
||
2103 | result := gpDisabled; |
||
2104 | end; |
||
2105 | reg.CloseKey; |
||
2106 | end; |
||
2107 | finally |
||
2108 | reg.Free; |
||
2109 | end; |
||
2110 | end; |
||
2111 | |||
2112 | class function TRecycleBinManager.RecyclerGroupPolicyConfirmFileDelete: GPOLICYBOOL; |
||
2113 | var |
||
2114 | reg: TRegistry; |
||
2115 | begin |
||
2116 | result := gpUndefined; |
||
2117 | reg := TRegistry.Create; |
||
2118 | try |
||
2119 | // If a value is set in HKEY_LOCAL_MACHINE, it will be prefered, |
||
2120 | // even if gpedit.msc shows "Not configured"! |
||
2121 | {$IFDEF GroupPolicyAcceptHKLMTrick} |
||
2122 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
2123 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2124 | begin |
||
2125 | if reg.ValueExists('ConfirmFileDelete') then |
||
2126 | begin |
||
2127 | if reg.ReadBool('ConfirmFileDelete') then |
||
2128 | result := gpEnabled |
||
2129 | else |
||
2130 | result := gpDisabled; |
||
2131 | Exit; |
||
2132 | end; |
||
2133 | reg.CloseKey; |
||
2134 | end; |
||
2135 | {$ENDIF} |
||
2136 | |||
2137 | reg.RootKey := HKEY_CURRENT_USER; |
||
2138 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2139 | begin |
||
2140 | if reg.ValueExists('ConfirmFileDelete') then |
||
2141 | begin |
||
2142 | if reg.ReadBool('ConfirmFileDelete') then |
||
2143 | result := gpEnabled |
||
2144 | else |
||
2145 | result := gpDisabled; |
||
2146 | end; |
||
2147 | reg.CloseKey; |
||
2148 | end; |
||
2149 | finally |
||
2150 | reg.Free; |
||
2151 | end; |
||
2152 | end; |
||
2153 | |||
2154 | class function TRecycleBinManager.RecyclerGroupPolicyRecycleBinSize: integer; |
||
2155 | var |
||
2156 | reg: TRegistry; |
||
2157 | begin |
||
2158 | result := -1; |
||
2159 | reg := TRegistry.Create; |
||
2160 | try |
||
2161 | // If a value is set in HKEY_LOCAL_MACHINE, it will be prefered, |
||
2162 | // even if gpedit.msc shows "Not configured"! |
||
2163 | {$IFDEF GroupPolicyAcceptHKLMTrick} |
||
2164 | reg.RootKey := HKEY_LOCAL_MACHINE; |
||
2165 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2166 | begin |
||
2167 | if reg.ValueExists('RecycleBinSize') then |
||
2168 | begin |
||
2169 | result := reg.ReadInteger('RecycleBinSize'); |
||
2170 | Exit; |
||
2171 | end; |
||
2172 | reg.CloseKey; |
||
2173 | end; |
||
2174 | {$ENDIF} |
||
2175 | |||
2176 | reg.RootKey := HKEY_CURRENT_USER; |
||
2177 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Policies\Explorer') then |
||
2178 | begin |
||
2179 | if reg.ValueExists('RecycleBinSize') then |
||
2180 | begin |
||
2181 | result := reg.ReadInteger('RecycleBinSize'); |
||
2182 | end; |
||
2183 | reg.CloseKey; |
||
2184 | end; |
||
2185 | finally |
||
2186 | reg.Free; |
||
2187 | end; |
||
2188 | end; |
||
2189 | |||
2190 | class function TRecycleBinManager.RecyclerConfirmationDialogEnabled: boolean; |
||
2191 | var |
||
2192 | gp: GPOLICYBOOL; |
||
2193 | begin |
||
2194 | gp := RecyclerGroupPolicyConfirmFileDelete; |
||
2195 | if gp <> gpUndefined then |
||
2196 | begin |
||
2197 | result := gp = gpEnabled; |
||
2198 | end |
||
2199 | else |
||
2200 | begin |
||
2201 | result := RecyclerShellStateConfirmationDialogEnabled; |
||
2202 | end; |
||
2203 | end; |
||
2204 | |||
2205 | class function TRecycleBinManager.RecyclerShellStateConfirmationDialogEnabled: boolean; |
||
2206 | var |
||
2207 | lpss: SHELLSTATE; |
||
2208 | bNoConfirmRecycle: boolean; |
||
2209 | |||
2210 | PSHGetSettings: TSHGetSettings; |
||
2211 | RBHandle: THandle; |
||
2212 | |||
2213 | reg: TRegistry; |
||
2214 | rbuf: array[0..255] of byte; |
||
2215 | begin |
||
2216 | PSHGetSettings := nil; |
||
2217 | result := false; // Avoid warning message |
||
2218 | |||
2219 | RBHandle := LoadLibrary(shell32); |
||
2220 | try |
||
2221 | if RBHandle <> 0 then |
||
2222 | begin |
||
2223 | PSHGetSettings := GetProcAddress(RBHandle, C_SHGetSettings); |
||
2224 | if not Assigned(@PSHGetSettings) then |
||
2225 | begin |
||
2226 | FreeLibrary(RBHandle); |
||
2227 | RBHandle := 0; |
||
2228 | end; |
||
2229 | end; |
||
2230 | |||
2231 | if (RBHandle <> 0) and Assigned(PSHGetSettings) then |
||
2232 | begin |
||
2233 | ZeroMemory(@lpss, SizeOf(lpss)); |
||
2234 | PSHGetSettings(lpss, SSF_NOCONFIRMRECYCLE); |
||
2235 | bNoConfirmRecycle := (lpss.Flags1 and 4) = 4; // fNoConfirmRecycle |
||
2236 | |||
2237 | result := not bNoConfirmRecycle; |
||
2238 | end |
||
2239 | else |
||
2240 | begin |
||
2241 | reg := TRegistry.Create; |
||
2242 | try |
||
2243 | // API function call failed. Probably because Windows is too old. |
||
2244 | // Try to read out from registry. |
||
2245 | // The 3rd bit of the 5th byte of "ShellState" is the value |
||
2246 | // of "fNoConfirmRecycle". |
||
2247 | |||
2248 | reg.RootKey := HKEY_CURRENT_USER; |
||
2249 | if reg.OpenKeyReadOnly('Software\Microsoft\Windows\CurrentVersion\Explorer') then |
||
2250 | begin |
||
2251 | ZeroMemory(@rbuf, SizeOf(rbuf)); |
||
2252 | reg.ReadBinaryData('ShellState', rbuf, SizeOf(rbuf)); |
||
2253 | |||
2254 | // Lese 3tes Bit vom 5ten Byte |
||
2255 | bNoConfirmRecycle := ((rbuf[4] and 4) = 4); |
||
2256 | result := not bNoConfirmRecycle; |
||
2257 | |||
2258 | reg.CloseKey; |
||
2259 | end |
||
2260 | else |
||
2261 | begin |
||
2262 | raise EAPICallError.CreateFmt(LNG_API_CALL_ERROR, [Format(LNG_NOT_CALLABLE, [C_SHGetSettings])]); |
||
2263 | end; |
||
2264 | finally |
||
2265 | reg.Free; |
||
2266 | end; |
||
2267 | end; |
||
2268 | finally |
||
2269 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
||
2270 | end; |
||
2271 | end; |
||
2272 | |||
2273 | class procedure TRecycleBinManager.RecyclerConfirmationDialogSetEnabled(NewSetting: boolean); |
||
2274 | var |
||
2275 | lpss: SHELLSTATE; |
||
2276 | |||
2277 | PSHGetSetSettings: TSHGetSetSettings; |
||
2278 | RBHandle: THandle; |
||
2279 | |||
2280 | reg: TRegistry; |
||
2281 | rbuf: array[0..255] of byte; |
||
2282 | |||
2283 | dwResult: DWORD; |
||
2284 | begin |
||
2285 | PSHGetSetSettings := nil; |
||
2286 | |||
2287 | RBHandle := LoadLibrary(shell32); |
||
2288 | try |
||
2289 | if RBHandle <> 0 then |
||
2290 | begin |
||
2291 | PSHGetSetSettings := GetProcAddress(RBHandle, C_SHGetSetSettings); |
||
2292 | if not Assigned(@PSHGetSetSettings) then |
||
2293 | begin |
||
2294 | FreeLibrary(RBHandle); |
||
2295 | RBHandle := 0; |
||
2296 | end; |
||
2297 | end; |
||
2298 | |||
2299 | if (RBHandle <> 0) and Assigned(PSHGetSetSettings) then |
||
2300 | begin |
||
2301 | ZeroMemory(@lpss, SizeOf(lpss)); |
||
2302 | |||
2303 | PSHGetSetSettings(lpss, SSF_NOCONFIRMRECYCLE, false); // Get |
||
2304 | |||
2305 | // Set 3rd bit equal to NewSetting |
||
2306 | if NewSetting then |
||
2307 | lpss.Flags1 := lpss.Flags1 or $00000004 |
||
2308 | else |
||
2309 | lpss.Flags1 := lpss.Flags1 and $FFFFFFFB; |
||
2310 | |||
2311 | PSHGetSetSettings(lpss, SSF_NOCONFIRMRECYCLE, true); // Set |
||
2312 | |||
2313 | SendMessageTimeout ( |
||
2314 | HWND_BROADCAST, WM_SETTINGCHANGE, |
||
2315 | 0, lParam (pChar ('ShellState')), |
||
2316 | SMTO_ABORTIFHUNG, 5000, dwResult |
||
2317 | ); |
||
2318 | end |
||
2319 | else |
||
2320 | begin |
||
2321 | reg := TRegistry.Create; |
||
2322 | try |
||
2323 | // API function call failed. Probably because Windows is too old. |
||
2324 | // Try to read out from registry. |
||
2325 | // The 3rd bit of the 5th byte of "ShellState" is the value |
||
2326 | // of "fNoConfirmRecycle". |
||
2327 | |||
2328 | reg.RootKey := HKEY_CURRENT_USER; |
||
2329 | if reg.OpenKey('Software\Microsoft\Windows\CurrentVersion\Explorer', false) then |
||
2330 | begin |
||
2331 | ZeroMemory(@rbuf, SizeOf(rbuf)); |
||
2332 | |||
2333 | reg.ReadBinaryData('ShellState', rbuf, SizeOf(rbuf)); // Get |
||
2334 | |||
2335 | // Set 3rd bit equal to NewSetting |
||
2336 | if NewSetting then |
||
2337 | rbuf[4] := rbuf[4] or $04 |
||
2338 | else |
||
2339 | rbuf[4] := rbuf[4] and $FB; |
||
2340 | |||
2341 | reg.WriteBinaryData('ShellState', rbuf, SizeOf(rbuf)); // Set |
||
2342 | |||
2343 | SendMessageTimeout ( |
||
2344 | HWND_BROADCAST, WM_SETTINGCHANGE, |
||
2345 | 0, lParam (pChar ('ShellState')), |
||
2346 | SMTO_ABORTIFHUNG, 5000, dwResult |
||
2347 | ); |
||
2348 | |||
2349 | reg.CloseKey; |
||
2350 | end |
||
2351 | else |
||
2352 | begin |
||
2353 | raise EAPICallError.CreateFmt(LNG_API_CALL_ERROR, [Format(LNG_NOT_CALLABLE, [C_SHGetSetSettings])]); |
||
2354 | end; |
||
2355 | finally |
||
2356 | reg.Free; |
||
2357 | end; |
||
2358 | end; |
||
2359 | finally |
||
2360 | if RBHandle <> 0 then FreeLibrary(RBHandle); |
||
2361 | end; |
||
2362 | end; |
||
2363 | |||
2364 | { TRbRecycleBinItem } |
||
2365 | |||
2366 | function TRbRecycleBinItem.GetSource: string; |
||
2367 | begin |
||
2368 | {$IFDEF UNICODE} |
||
2369 | result := SourceUnicode; |
||
2370 | {$ELSE} |
||
2371 | result := SourceAnsi; |
||
2372 | {$ENDIF} |
||
2373 | end; |
||
2374 | |||
2375 | end. |