Atmosphere/stratosphere/fs_mitm/source/fsmitm_service.hpp

#pragma once
#include <switch.h>
#include <stratosphere/iserviceobject.hpp>
#include "imitmserviceobject.hpp"
#include "fs_istorage.hpp"
#include "fsmitm_utils.hpp"

enum class FspSrvCmd {
    SetCurrentProcess = 1,
    OpenDataStorageByCurrentProcess = 200,
    OpenDataStorageByDataId = 202,
};

class FsMitMService : public IMitMServiceObject {      
    private:
        bool has_initialized = false;
        u64 init_pid = 0;
        std::shared_ptr<IStorageInterface> romfs_storage;
    public:
        FsMitMService(Service *s) : IMitMServiceObject(s) {
            /* ... */
        }
        
        static bool should_mitm(u64 pid, u64 tid) {
            if (tid >= 0x0100000000010000ULL) {
                return true;
            }
            bool has_romfs_content;
            Result rc = Utils::HasSdRomfsContent(tid, &has_romfs_content);
            return R_SUCCEEDED(rc) && has_romfs_content;
        }
        
        FsMitMService *clone() override {
            auto new_srv = new FsMitMService((Service *)&this->forward_service);
            this->clone_to(new_srv);
            return new_srv;
        }
        
        void clone_to(void *o) override {
            FsMitMService *other = (FsMitMService *)o;
            other->has_initialized = has_initialized;
            other->init_pid = init_pid;
        }
        
        virtual Result dispatch(IpcParsedCommand &r, IpcCommand &out_c, u64 cmd_id, u8 *pointer_buffer, size_t pointer_buffer_size);
        virtual void postprocess(IpcParsedCommand &r, IpcCommand &out_c, u64 cmd_id, u8 *pointer_buffer, size_t pointer_buffer_size);
        virtual Result handle_deferred();
    
    protected:
        /* Overridden commands. */
        std::tuple<Result, OutSession<IStorageInterface>> open_data_storage_by_current_process();
        std::tuple<Result, OutSession<IStorageInterface>> open_data_storage_by_data_id(u64 storage_id, u64 data_id);
};