Re: Plugin problem with Firefox 4

On 4/26/2011 2:54 AM, imag wrote:
> Hello
>
> I have a plugin which loads separate DLL with LoadLibrary() Windows
> API.
> It works OK up to Firefox 3.6.x but somehow LoadLibrary() call fails
> (return NULL) in Firefox 4.
> In the plugin code there is _chdir() call to move to the directory
> where the DLL to load exists, but looks like the current directory is
> not contained in the DLL search.
>
> There is a workaround for this, use LoadLibraryEx() to explicitly set
> DLL search path, but wondering why the issue happened. Whatever
> changed about plugin in Firefox 4?
This was an intentional change made in a security bug which is not yet 
public. Instead of loading the library with a raw filename 
LoadLibrary("my.dll") you should construct a full path using 
LoadLibrary("C:\full\path\to\my.dll");

--BDS