Dynamically hook vtable functions

virtualutils.h

#pragma once

#include <dlfcn.h>
#include <string.h>
#include <stdlib.h>
#include <stddef.h>


uintptr_t DynamicHookVirtual(void** vtable, char* mangled, int end, void* myfunc) {
	int index = -1;
	// TODO: Find the size of the vtable automagically?
	for(int i = 0; i < end; i++) {
		void* currentfunc = vtable[i];
		Dl_info info;
		int status = dladdr(currentfunc, &info);
		const char* sym = info.dli_sname;
		if(!strcmp(sym, mangled)) {
			index = i;
			break;
		}
	}

	if(index == -1) return 0x00000000;
	uintptr_t real = (uintptr_t) vtable[index];
	vtable[index] = myfunc;
	return real;
}

about "TODO". .. check every pointer to vtable function , if is null = end for.

It would just keep reading endlessly.