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68 lines
2.9 KiB
C++
68 lines
2.9 KiB
C++
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#pragma once
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#include "../loader/Hook.hpp"
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#include "Result.hpp"
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namespace geode {
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namespace hook {
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/**
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* Add a new Objective-C method to a class. This method will be created
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* using the imp provided. If the method already exists, it won't do
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* anything.
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* @param className The name of the class to add the method to
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* @param selectorName The name of the method to add
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* @param imp The implementation of the method
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* @returns Ok() if the method was added successfully, or an error.
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*/
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Result<> addObjcMethod(std::string const& className, std::string const& selectorName, void* imp);
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/**
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* Get the implementation of an Objective-C method.
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* @param className The name of the class whose method to get
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* @param selectorName The name of the method to get
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* @returns The implementation of the method, or an error.
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*/
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Result<void*> getObjcMethodImp(std::string const& className, std::string const& selectorName);
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}
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class ObjcHook {
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public:
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/**
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* Create a hook for an Objective-C method
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* @param className The name of the class whose method to hook
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* @param selectorName The name of the method to hook
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* @param function The detour to run when the method is called
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* @returns The created hook, or an error.
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*/
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template <class Func>
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static Result<Hook*> create(std::string const& className, std::string const& selectorName, Func function, tulip::hook::HookMetadata const& metadata = tulip::hook::HookMetadata()) {
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GEODE_UNWRAP_INTO(auto imp, geode::hook::getObjcMethodImp(className, selectorName));
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return Ok(Hook::create(
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getMod(),
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imp,
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function,
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className + "::" + selectorName,
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tulip::hook::TulipConvention::Default,
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metadata
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));
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}
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/**
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* Create a hook for a new Objective-C method. This method will be
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* created with a dummy implementation that does nothing.
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* @param className The name of the class whose method to hook
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* @param selectorName The name of the method to hook
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* @param function The detour to run when the method is called
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* @param empty A function that takes no arguments and returns nothing.
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* This is used to create a dummy method that can be hooked.
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* @returns The created hook, or an error.
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*/
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template <class Func>
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static Result<Hook*> create(std::string const& className, std::string const& selectorName, Func function, void(*empty)(), tulip::hook::HookMetadata const& metadata = tulip::hook::HookMetadata()) {
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GEODE_UNWRAP(geode::hook::addObjcMethod(className, selectorName, (void*)empty));
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return ObjcHook::create(className, selectorName, function, metadata);
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}
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};
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}
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