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tyranid / oleviewdotnet

A .net OLE/COM viewer and inspector to merge functionality of OleView and Test Container
GNU General Public License v3.0
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Add and forward server type param from Get-ComClassInterface cmdlet to OOP interface querying #37

Open the-deniss opened 2 years ago

the-deniss commented 2 years ago

Now Get-ComClassInterface tries to instantiate COM class for further querying implemented interfaces with CLSCTX derived from DefaultServerType. But sometimes this results in error:

$UsoClass = Get-ComClass -Clsid B91D5831-B1BD-4608-8198-D72E155020F7                                                                                                                                                                                                                                                                                                                                                                                                                             Get-ComClassInterface -ClassEntry $UsoClass
Exception calling "LoadSupportedInterfaces" with "3" argument(s): "ClassFactory cannot supply requested class"
At C:\Users\User\Documents\MyRepo\oleviewdotnet\bin\Release\OleViewDotNet.psm1:960 char:17
+ ...             $class.LoadSupportedInterfaces($Refresh, $Token, $ServerT ...
+                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : Win32Exception

Error occurs due attempt to instantiate this COM-object in-proc because UpdateSessionOrchestrator's DefaultServerType is InProcServer32. And it could be cool if you can manually specify desired server type. With proposed fix it can look like:

Get-ComClassInterface -ClassEntry $UsoClass -ServerType LocalServer32

Name                 IID                                  Module               VTableOffset
----                 ---                                  ------               ------------
IMarshal             00000003-0000-0000-c000-000000000046                      0
IMarshal2            000001cf-0000-0000-c000-000000000046                      0
IUnknown             00000000-0000-0000-c000-000000000046                      0
IUpdateSessionOrc... 07f3afac-7c8a-4ce7-a5e0-3d24ee8a77e0                      0
IMoUsoOrchestrator   c57692f8-8f5f-47cb-9381-34329b40285a                      0

P.S.: In the future, it will be nice to add this parameter to UI, but I'm too lazy for this