Hook/Call the same function?

[high6]

So I have a C++ dll injected into a process and I want to hook/call the same function. Problem is that if I have the hook call the function then it can turn into some nasty recursion.

What is the best way to Hook/Call the same function?

Some thoughts

-Could call the hook's trampoline instead which will cause it to skip over the hook. (Will only work if hooking the start of a function)

-Could set a flag that will skip the hook. Not sure how I would do that without it being a giant mess though.

[atom0s]

So I have a C++ dll injected into a process and I want to hook/call the same function. Problem is that if I have the hook call the function then it can turn into some nasty recursion.

What is the best way to Hook/Call the same function?

Some thoughts

-Could call the hook's trampoline instead which will cause it to skip over the hook. (Will only work if hooking the start of a function)

-Could set a flag that will skip the hook. Not sure how I would do that without it being a giant mess though.

Your first thought would probably be the cleanest method to use if you are hooking the start of the function as you said.

Adding a flag could get messy depending on how you plan to implement it.

[high6]

Okay well I did some thinking. Maybe I could make a SafeCalling class which would store the threadid and patch addrs in a static vector which would have static accessors for ASM use and when it is finished calling it would remove the threadid and patch addrs.

Then I would build into the codecaves my hook class uses to read that vector making sure it isnt blocking.