How to find CFBundleRef from a function address or a class

Is it possible to get the Bundle reference (CFBundleRef) from a function address or a class name in Carbon..??

I know there are functions in Objective-C

NSBundle myBundle = [NSBundle bundleForClass:(Class)<SOME_CLASS>];

and with Windows API

GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS, (LPCTSTR)<SOME_FUNCTION>, &outModule);

Is there anything similar or any other method with C++ on a mac??

Thanks, Abhinay.

Solution

You can use the Core Foundation functions that operate on CFBundle to get the bundle reference to the bundle that exports a given function name:

CFStringRef functionName = CFSTR("someFunctionName");
CFArrayRef allBundles = CFBundleGetAllBundles();
CFIndex i;
CFIndex bundleCount = CFArrayGetCount(allBundles);

for (i = 0; i < bundleCount; i++) {
    CFBundleRef bundle = CFArrayGetValueAtIndex(allBundles, i);
    void *functionPointer = CFBundleGetFunctionPointerForName(bundle, functionName);
    if (functionPointer != NULL) {
        // bundle points to a bundle that exports functionName
    }
}

And since CFBundleGetDataPointerForName() returns a data pointer to a given symbol name in a bundle, I believe it can be used for class names as well since a class is exported with a symbol name _OBJC_CLASS_$_<className>, e.g. _OBJC_CLASS_$_NSArray.

As far as I can tell, there’s no function that allows to you to inspect whether a bundle exports a function by specifying the function address.