forcable fail dll load?

jassing · **Posted:** Sat Mar 03, 2012 8:16 am

From within a dll

during "attach process" -- under certain conditions, I want the dll to "fail to load" -- is there a way to do that?

EDIT:
it appears if I raise an error in AttachProcess() this causes the dll to not load...
Is this the best approach?

Shield · **Joined:** Fri Jan 21, 2011 8:25 am **Posts:** 548

It might be enough just to return false in AttachProcess...at least that's how you'd do it in the native WinAPI DllMain function...
Check this out, it might help: http://msdn.microsoft.com/en-us/windows ... 87379.aspx

jassing · **Posted:** Sun Mar 04, 2012 12:49 am

Shield wrote:

It might be enough just to return false in AttachProcess...at least that's how you'd do it in the native WinAPI DllMain function...
Check this out, it might help: http://msdn.microsoft.com/en-us/windows ... 87379.aspx

I thought that might be -- but a function w/o a specific "procedurereturn" does return 0/false

So by default, attachprocess procedure returns false.

Thorium · **Joined:** Sat Aug 15, 2009 6:59 pm **Posts:** 1024

You could try using DllMain instead of AttachProcess and DetachProcess.
It has a return value that indicates if it was successfull.

http://msdn.microsoft.com/en-us/library ... 82583.aspx

Kwaï chang caïne · **Posted:** Sun Mar 04, 2012 10:19 pm

I don't know if i have good understand the question :oops:

But there are a long time FREAK give to me this little jewel

I use it for not give acces of my DLL if the key of the EXE is not good

Code:

 !ADD esp, 8     ; remove Instance variable and return address from stack 
 !MOV eax, 0     ; set returnvalue to 0 
 !RET 12         ; return from DllEntryPoint 

jassing · **Posted:** Mon Mar 05, 2012 1:11 am

Kwaï chang caïne wrote:

I don't know if i have good understand the question :oops:

But there are a long time FREAK give to me this little jewel

I use it for not give acces of my DLL if the key of the EXE is not good

Code:

 !ADD esp, 8     ; remove Instance variable and return address from stack 
 !MOV eax, 0     ; set returnvalue to 0 
 !RET 12         ; return from DllEntryPoint 

Thanks -- I was looking for a "proper way" -- but it seems there are many ways. Personally, I like the simple

Code:

RaiseError(#ERROR_DLL_INIT_FAILED)

Error returned to calling program is meaningful...

Kwaï chang caïne · **Posted:** Mon Mar 05, 2012 7:11 pm

Cool i never see this function :shock:

Thanks jassing

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forcable fail dll load?

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