liuyx / Inline Hook

It's a simple inline-hook framework works for intel(32bit,64bit) and arm(only works for arm32 and thumb) just now, and it's based on new c++11 feature.

How to build: the framework based on cmake 2.8, all you have to do is:
cmake . make

How to use:
The usage of the this framework is very easy,example(main.cpp) shows below:

#include "../hooker/HookerFactory.h"
#include <iostream>
#include <cstring>
#include <future>
#include <cstdio>
#include <random>
#include <memory>

void print(const char *s) {
    std::cout << s << std::endl;
}

int (*old_strcmp)(const char *, const char *);

int my_strcmp(const char *s1, const char *s2) {
    std::cout << s1 << " " << s2 << ",haha, it's been hooked" << std::endl;

	if (old_strcmp) {
		std::cout << "old result is: " << old_strcmp(s1, s2) << std::endl;
	}
    return 0;
}

int main() {
    const char *s1 = "hello";
    const char *s2 = "world";

    using namespace hooker;
	std::unique_ptr<HookerFactory> factory = HookerFactory::getInstance();
    const Hooker& hooker = factory->getHooker();
    hooker.hook(reinterpret_cast<void*>(strcmp), reinterpret_cast<void*>(my_strcmp), reinterpret_cast<void**>(&old_strcmp));

    if (strcmp(s1,s2) == 0) {
        print("equal");
    } else {
        print("not equal");
    }

    hooker.unhook(reinterpret_cast<void*>(strcmp), reinterpret_cast<void*>(old_strcmp));

    if (strcmp(s1,s2) == 0) {
        print("equal");
    } else {
        print("not equal");
    }

    return 0;
}

The output is as below: