السلام عليكم
DLL Exports Functions
الكود الآتي يمكنك من الحصول على الدوال التي يصدرها الـ DLL
أضف Unit جديدة و سمها DLLTools و هذا هو الكود الخاص بها
// By : Peter Below http://www.teamb.com
unit DLLTools;
interface
Uses Windows, Classes, Sysutils, imagehlp ;
type
TDLLExportCallback = function (const name: String; ordinal: Integer;
address: Pointer): Boolean of Object;
{ Note: address is a RVA here, not a usable virtual address! }
DLLToolsError = Class( Exception );
Procedure ListDLLExports( const filename: String; callback:
TDLLExportCallback );
Procedure DumpExportDirectory( Const ExportDirectory: TImageExportDirectory;
lines: TStrings; const Image: LoadedImage );
Function RVAToPchar( rva: DWORD; const Image: LoadedImage ): PChar;
Function RVAToPointer( rva: DWORD; const Image: LoadedImage ): Pointer;
implementation
resourcestring
eDLLNotFound =
'ListDLLExports: DLL %s does not exist!';
{+----------------------------------------------------------------------
| Procedure EnumExports
|
| Parameters :
| ExportDirectory: IMAGE_EXPORT_DIRECTORY record to enumerate
| image : LOADED_IMAGE record for the DLL the export directory belongs
| to.
| callback : callback function to hand the found exports to, must not be
Nil
| Description:
| The export directory of a PE image contains three RVAs that point at
tables
| which describe the exported functions. The first is an array of RVAs
that
| refer to the exported function names, these we translate to PChars to
| get the exported name. The second array is an array of Word that
contains
| the export ordinal for the matching entry in the names array. The
ordinal
| is biased, that is we have to add the ExportDirectory.Base value to it
to
| get the actual export ordinal. The biased ordinal serves as index for
the
| third array, which is an array of RVAs that give the position of the
| function code in the image. We don't translate these RVAs since the DLL
| is not relocated since we load it via MapAndLoad. The function array is
| usually much larger than the names array, since the ordinals for the
| exported functions do not have to be in sequence, there can be (and
| frequently are) gaps in the sequence, for which the matching entries in
the
| function RVA array are garbage.
| Error Conditions: none
| Created: 9.1.2000 by P. Below
+----------------------------------------------------------------------}
Procedure EnumExports( const ExportDirectory : TImageExportDirectory ;
const image : LoadedImage ;
callback : TDLLExportCallback ) ;
Type
TDWordArray = Array [0..$FFFFF] of DWORD;
Var
i: Cardinal;
pNameRVAs, pFunctionRVas: ^TDWordArray;
pOrdinals: ^TWordArray;
name: String;
address: Pointer;
ordinal: Word;
Begin { EnumExports }
pNameRVAs :=
RVAToPointer( DWORD(ExportDirectory.AddressOfNames), image );
pFunctionRVAs :=
RVAToPointer( DWORD(ExportDirectory.AddressOfFunctions), image );
pOrdinals :=
RVAToPointer( DWORD(ExportDirectory.AddressOfNameOrdinals), image );
For i:= 0 to Pred( ExportDirectory.NumberOfNames ) Do Begin
name := RVAToPChar( pNameRVAs^, image );
ordinal := pOrdinals^;
address := Pointer( pFunctionRVAs^[ ordinal ] );
If not callback( name, ordinal+ExportDirectory.Base, address ) Then
Exit;
End; { For }
End; { EnumExports }
{+----------------------------------------------------------------------
| Procedure ListDLLExports
|
| Parameters :
| filename : full pathname of DLL to examine
| callback : callback to hand the found exports to, must not be Nil
| Description:
| Loads the passed DLL using the LoadImage function, finds the exported
| names table and reads it. Each found entry is handed to the callback
| for further processing, until no more entries remain or the callback
| returns false. Note that the address passed to the callback for a
exported
| function is an RVA, so not identical to the address the function would
| have in a properly loaded and relocated DLL!
| Error Conditions:
| Exceptions are raised if
| - the passed DLL does not exist or could not be loaded
| - no callback was passed (only if assertions are on)
| - an API function failed
| Created: 9.1.2000 by P. Below
+----------------------------------------------------------------------}
Procedure ListDLLExports( const filename : String ; callback :
TDLLExportCallback ) ;
Var
imageinfo: LoadedImage;
pExportDirectory: PImageExportDirectory;
dirsize: Cardinal;
Begin { ListDLLExports }
Assert( Assigned( callback ));
If not FileExists( filename ) Then
raise DLLToolsError.CreateFmt( eDLLnotFound, [filename] );
If MapAndLoad( PChar( filename ), nil, @imageinfo, true, true ) Then
try
pExportDirectory :=
ImageDirectoryEntryToData(
imageinfo.MappedAddress, false,
IMAGE_DIRECTORY_ENTRY_EXPORT, dirsize );
If pExportDirectory = Nil Then
RaiseLastWin32Error
Else
EnumExports( pExportDirectory^, imageinfo, callback );
finally
UnMapAndLoad( @imageinfo );
end
Else
RaiseLastWin32Error;
End; { ListDLLExports }
{+----------------------------------------------------------------------
| Procedure DumpExportDirectory
|
| Parameters :
| ExportDirectory: a IMAGE_EXPORT_DIRECTORY record
| lines : a TStrings descendend to put the info into, must not be Nil
| Description:
| Dumps the fields of the passed structure to the passed strings
descendent
| as strings.
| Error Conditions:
| will raise an exception if lines is Nil and assertions are enabled.
| Created: 9.1.2000 by P. Below
+----------------------------------------------------------------------}
Procedure DumpExportDirectory( Const ExportDirectory : TImageExportDirectory;
lines : TStrings; const Image: LoadedImage ) ;
Begin { DumpExportDirectory }
Assert( Assigned( lines ));
lines.add( 'Dump of IMAGE_EXPORT_DIRECTORY' );
lines.add( format('Characteristics: %d',
[ExportDirectory.Characteristics]));
lines.add( format('TimeDateStamp: %d',
[ExportDirectory.TimeDateStamp]));
lines.add( format('Version: %d.%d',
[ExportDirectory.MajorVersion,
ExportDirectory.MinorVersion]));
lines.add( format('Name (RVA): %x',
[ExportDirectory.Name]));
lines.add( format('Name (translated): %s',
[RVAToPchar( ExportDirectory.name, Image )]));
lines.add( format('Base: %d',
[ExportDirectory.Base]));
lines.add( format('NumberOfFunctions: %d',
[ExportDirectory.NumberOfFunctions]));
lines.add( format('NumberOfNames: %d',
[ExportDirectory.NumberOfNames]));
lines.add( format('AddressOfFunctions (RVA): %p',
[Pointer(ExportDirectory.AddressOfFunctions)]));
lines.add( format('AddressOfNames (RVA): %p',
[Pointer(ExportDirectory.AddressOfNames)]));
lines.add( format('AddressOfNameOrdinals (RVA): %p',
[Pointer(ExportDirectory.AddressOfNameOrdinals)]));
End; { DumpExportDirectory }
{+----------------------------------------------------------------------
| Function RVAToPointer
|
| Parameters :
| rva : a relative virtual address to translate
| Image : LOADED_IMAGE structure for the image the RVA relates to
| Returns : translated address
| Description:
| Uses the ImageRVAToVA function to translate the RVA to a virtual
| address.
| Error Conditions:
| Will raise an exception if the translation failed
| Created: 9.1.2000 by P. Below
+----------------------------------------------------------------------}
Function RVAToPointer( rva : DWORD ; const Image : LoadedImage ) : Pointer;
var
pDummy: PImageSectionHeader;
Begin { RVAToPchar }
pDummy := nil;
Result :=
ImageRvaToVa( Image.FileHeader, Image.MappedAddress, rva,
pDummy );
If Result = Nil Then
RaiseLastWin32Error;
End; { RVAToPointer }
{+----------------------------------------------------------------------
| Function RVAToPchar
|
| Parameters :
| rva : a relative virtual address to translate
| Image : LOADED_IMAGE structure for the image the RVA relates to
| Returns : translated address
| Description:
| Uses the RVAToPointer function to translate the RVA to a virtual
| address. Note that we do not check that the address does indeed point
| to a zero-terminated string!
| Error Conditions:
| Will raise an exception if the translation failed
| Created: 9.1.2000 by P. Below
+----------------------------------------------------------------------}
Function RVAToPchar( rva : DWORD ; const Image : LoadedImage ) : PChar ;
Begin { RVAToPchar }
Result := RVAToPointer( rva, image );
End; { RVAToPchar }
end.
-------------------------------------
هنا استخدام الـ Unit السابقة
* أضف DLLTools الى Uses
* أضف Button , listview , opendialog
* أضف التصريح التالي للدالة ListExport في Private
private
{ Private declarations }
function ListExport( const name: String; ordinal: Integer; address:Pointer ): Boolean;
وهذا هو الكود الخاص بالدالة
function TForm1.ListExport( const name: String; ordinal: Integer; address:Pointer ): Boolean;
var
listentry: TListItem;
begin
Result := true;
listentry:= listview1.Items.Add;
listentry.Caption := Format('%p',[address] );
listentry.Subitems.Add( format('%d',[ordinal] ));
listentry.Subitems.Add( name );
end;
* في الحدث Onclick للـ Button المضاف أضف الكود الآتي
procedure TForm1.Button1Click(Sender: TObject);
begin
if opendialog1.execute then
begin
listview1.items.clear;
ListDLLExports( opendialog1.filename, listexport );
end;
end;
--------------------------
هناك مقال نشر في Delphi3000 و قمت بتجربته لكن لم يقم بأي شئ :(
وهذا هو الموضوع
Add the unit ImageHlp in USES of the form.
procedure ListDLLFunctions(DLLName: String; List: TStrings);
type
chararr = array [0..$FFFFFF] of Char;
var H: THandle;
I,
fc: integer;
st: string;
arr: Pointer;
ImageDebugInformation: PImageDebugInformation;
begin
List.Clear;
DLLName := ExpandFileName(DLLName);
if FileExists(DLLName) then
begin
H := CreateFile(PChar(DLLName), GENERIC_READ, FILE_SHARE_READ or
FILE_SHARE_WRITE, nil, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
if H<>INVALID_HANDLE_VALUE then
try
ImageDebugInformation := MapDebugInformation(H, PChar(DLLName), nil, 0);
if ImageDebugInformation<>nil then
try
arr := ImageDebugInformation^.ExportedNames;
fc := 0;
for I := 0 to ImageDebugInformation^.ExportedNamesSize - 1 do
if chararr(arr^)=#0 then
begin
st := PChar(@chararr(arr^)[fc]);
if Length(st)>0 then
List.Add(st);
if (I>0) and (chararr(arr^)[I-1]=#0) then
Break;
fc := I + 1
end
finally
UnmapDebugInformation(ImageDebugInformation)
end
finally
CloseHandle(H)
end
end
end;
To call this procedure in your application, put a button and a list box in your form and do the follow:
procedure TForm1.Button1Click(Sender: TObject);
var
List: TStrings;
I: integer;
begin
List := TStringList.Create;
listbox1.clear;
ListDLLFunctions('PATH OF DLL', List);
for I := 0 to List.Count - 1 do
listbox1.items.add(list);
List.Free
end;
------------------------
------------------------
Memory Mapped Files
Working with extremely large text files
هذا موضوع جيد نشر في DelphiPages يمكن الاطلاع عليه هنا
http://www.delphipages.com/news/detaildocs.cfm?ID=41
لمزيد من المعلومات عن Memory Mapped Files فما نشره الأخ هاني الأتاسي واحد من أجمل المواضيع المنشورة هنا وقد وعد بنشر معلومات في هذا الموضوع ( منتظرين على نار ;) ).