Как получить программным путем список всех экспортируемых ДЛЛ функицй ?
ЗЫ Очень надо....
Sergey
Программным вроде никак. Пусть опровергнут меня специалисты по WinAPI.
Если ты просто хочешь проверить наличие функции в DLL, используй:
if GetProcAddress(hModule, 'FunctionName') = INVALID_HANDLE_VALUE then
функции нет;
Если все же ты хочешь получить _список экспортируемых функций_,
то тогда тебе надо открывать DLL-ку, анализировать ее в зависимости от
типа файла (PE, NE, LE) и выкусывать список функций. Если это
ОЧЕНЬ надо, могу опубликовать алгоритм...
--
Отправлено через сервер Форумы@mail.ru - http://talk.mail.ru
Mon Jun 17 2002 17:12, Sergey Gluhov wrote to Dmitriy Prokopenko:
SG> Как получить программным путем список всех экспортируемых ДЛЛ функицй ?
DP> Прочитать таблицу экспорта DLL. Ее формат описан в MSDN.
> если бы у меня это дело было бы, не спрашивал бы.
----------------------------------------------------------
От:Peter Below (TeamB) (10011...@compuXXserve.com)
Заголовок:Re: How to extract exported function names from .DLL
Группы новостей:borland.public.delphi.objectpascal
Число:2000/01/09
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^[i], image );
ordinal := pOrdinals^[i];
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 {DLLTools}.
The ListDLLExports function is used like this:
Drop a TListview and a button on a new form, name the listview 'Listview',
set its viewstyle to vsReport, add three columns to it. Drop a TOpenDialog on
the form, name it 'OpenDialog', set its Filter property to show DLLs, its
InitialDir to your Windows\system directory. Add a OnClick handler for the
button, modify unit as follows, compile and run, click on button, select a
DLL.
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls, ComCtrls;
type
TDLLExportCallback = function (const name: String; ordinal: Integer;
address: Pointer): Boolean of Object;
TForm1 = class(TForm)
ListView: TListView;
Button1: TButton;
OpenDialog: TOpenDialog;
procedure Button1Click(Sender: TObject);
private
function ListExport(const name: String; ordinal: Integer;
address: Pointer): Boolean;
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
uses DLLTools;
{$R *.DFM}
procedure TForm1.Button1Click(Sender: TObject);
begin
If opendialog.execute then begin
listview.items.clear;
ListDLLExports( opendialog.filename, listexport );
end;
end;
function tform1.ListExport( const name: String; ordinal: Integer; address:
Pointer ): Boolean;
var
listentry: TLIstItem;
begin
Result := true;
listentry:= listview.Items.Add;
listentry.Caption := Format('%p',[address] );
listentry.Subitems.Add( format('%d',[ordinal] ));
listentry.Subitems.Add( name );
end;
end.
Peter Below (TeamB) 10011...@compuserve.com)
-------------------------------------------------------------
С уважением, LVT
skip skip skip skip skip
> Peter Below (TeamB) 10011...@compuserve.com)
> -------------------------------------------------------------
>
> С уважением, LVT
>
Все хорошо, но попробуйте так загрузить не PE, а NE или LE файл.
Ну любой файл из каталога C:\WINDOWS\SYSTEM
Или скажем тот же C:\WINDOWS\SYSTEM32\avicap.dll
Энта штука рассчитана только на PE-файлы !
Осторожнее!
V> From: "Valery" <val...@png.ws.lukoil.com>
V> Программным вроде никак. Пусть опровергнут меня специалисты по WinAPI.
V> Если ты просто хочешь проверить наличие функции в DLL, используй:
V> if GetProcAddress(hModule, 'FunctionName') = INVALID_HANDLE_VALUE then
V> функции нет;
что-то не пашет.........
Sergey
V>> Пpогpаммным вpоде никак. Пyсть опpовеpгнyт меня специалисты по
V>> WinAPI. Если ты пpосто хочешь пpовеpить наличие фyнкции в DLL,
V>> использyй:
V>> if GetProcAddress(hModule, 'FunctionName') = INVALID_HANDLE_VALUE
V>> then фyнкции нет;
SG> что-то не пашет.........
Конечно не пашет. Hадо
if GetProcAddress(hModule, 'FunctionName') = nil then...
Bye Sergey!
on *17.06.02* *17:12:10* you wrote in the area *RU.DELPHI*
a message to *Dmitriy Prokopenko*
>>> Как получить программным путем список всех экспортируемых ДЛЛ функицй ?
DP>> Прочитать таблицу экспорта DLL. Ее формат описан в MSDN.
SG> если бы у меня это дело было бы, не спрашивал бы.
Возьми любой Pe-Editor посмотри Import и Export.
PE-Editor есть также в DeDe
Best regards,
Igor U. Nikolaev
Managing Director - FST Software
ad...@fstsoft.com
http://www.fstsoft.com