有什么方法知道dll文件中含有哪些函数?(50分)

请了,大侠们
有什么方法知道dll文件中含有哪些函数?
谢谢!

用tdump可以看到函数名，不过，还是不能知道参数的情况。

我习惯用dumpbin.exe,vc带的
c:/dumpbin /imports f:/xxx.dll

up

查看DLL中的Exports函数

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 );
//列出函数...
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 do
es 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 do
n'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 do
es 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 do
es 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.


以下是调用函数的例子...
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
ComCtrls, StdCtrls;
type
TfrmShowDll = class(TForm)
Button1: TButton;
ListView: TListView;
OpenDialog1: TOpenDialog;
procedure Button1Click(Sender: TObject);
private
function ListExport( const name: String;
ordinal: Integer;
addressointer ): Boolean;
{ Private declarations }
public
{ Public declarations }
end;

var
frmShowDll: TfrmShowDll;
implementation
uses DllTools;
{$R *.DFM}
{ TForm1 }
function TfrmShowDll.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;

procedure TfrmShowDll.Button1Click(Sender: TObject);
begin
if OpenDialog1.execute then
begin
listview.items.clear;
ListDLLExports( opendialog1.filename, listexport );
end;
end;

end.

如果是win98，“快速查看”就可以了。