mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2025-10-31 11:15:51 +01:00
1210 lines
50 KiB
C++
1210 lines
50 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stratosphere.hpp>
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#include "dmnt_cheat_api.hpp"
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#include "dmnt_cheat_vm.hpp"
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#include "dmnt_cheat_debug_events_manager.hpp"
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namespace ams::dmnt::cheat::impl {
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namespace {
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/* Helper definitions. */
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constexpr size_t MaxCheatCount = 0x80;
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constexpr size_t MaxFrozenAddressCount = 0x80;
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/* Manager class. */
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class CheatProcessManager {
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private:
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static constexpr size_t ThreadStackSize = 0x4000;
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private:
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os::Mutex cheat_lock;
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os::Event unsafe_break_event;
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os::Event debug_events_event; /* Autoclear. */
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os::ThreadType detect_thread, debug_events_thread;
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os::SystemEvent cheat_process_event;
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Handle cheat_process_debug_handle = svc::InvalidHandle;
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CheatProcessMetadata cheat_process_metadata = {};
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os::ThreadType vm_thread;
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bool broken_unsafe = false;
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bool needs_reload_vm = false;
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CheatVirtualMachine cheat_vm;
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bool enable_cheats_by_default = true;
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bool always_save_cheat_toggles = false;
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bool should_save_cheat_toggles = false;
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CheatEntry cheat_entries[MaxCheatCount] = {};
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std::map<u64, FrozenAddressValue> frozen_addresses_map;
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alignas(os::MemoryPageSize) u8 detect_thread_stack[ThreadStackSize] = {};
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alignas(os::MemoryPageSize) u8 debug_events_thread_stack[ThreadStackSize] = {};
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alignas(os::MemoryPageSize) u8 vm_thread_stack[ThreadStackSize] = {};
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private:
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static void DetectLaunchThread(void *_this);
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static void VirtualMachineThread(void *_this);
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static void DebugEventsThread(void *_this);
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Result AttachToApplicationProcess(bool on_process_launch);
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bool ParseCheats(const char *s, size_t len);
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bool LoadCheats(const ncm::ProgramId program_id, const u8 *build_id);
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bool ParseCheatToggles(const char *s, size_t len);
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bool LoadCheatToggles(const ncm::ProgramId program_id);
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void SaveCheatToggles(const ncm::ProgramId program_id);
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bool GetNeedsReloadVm() const {
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return this->needs_reload_vm;
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}
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void SetNeedsReloadVm(bool reload) {
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this->needs_reload_vm = reload;
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}
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void ResetCheatEntry(size_t i) {
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if (i < MaxCheatCount) {
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std::memset(&this->cheat_entries[i], 0, sizeof(this->cheat_entries[i]));
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this->cheat_entries[i].cheat_id = i;
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this->SetNeedsReloadVm(true);
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}
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}
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void ResetAllCheatEntries() {
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for (size_t i = 0; i < MaxCheatCount; i++) {
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this->ResetCheatEntry(i);
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}
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this->cheat_vm.ResetStaticRegisters();
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}
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CheatEntry *GetCheatEntryById(size_t i) {
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if (i < MaxCheatCount) {
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return &this->cheat_entries[i];
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}
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return nullptr;
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}
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CheatEntry *GetCheatEntryByReadableName(const char *readable_name) {
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/* Check all non-master cheats for match. */
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for (size_t i = 1; i < MaxCheatCount; i++) {
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if (std::strncmp(this->cheat_entries[i].definition.readable_name, readable_name, sizeof(this->cheat_entries[i].definition.readable_name)) == 0) {
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return &this->cheat_entries[i];
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}
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}
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return nullptr;
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}
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CheatEntry *GetFreeCheatEntry() {
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/* Check all non-master cheats for availability. */
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for (size_t i = 1; i < MaxCheatCount; i++) {
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if (this->cheat_entries[i].definition.num_opcodes == 0) {
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return &this->cheat_entries[i];
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}
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}
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return nullptr;
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}
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void CloseActiveCheatProcess() {
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if (this->cheat_process_debug_handle != svc::InvalidHandle) {
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/* We don't need to do any unsafe brekaing. */
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this->broken_unsafe = false;
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this->unsafe_break_event.Signal();
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/* Knock out the debug events thread. */
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os::CancelThreadSynchronization(std::addressof(this->debug_events_thread));
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/* Close resources. */
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R_ABORT_UNLESS(svc::CloseHandle(this->cheat_process_debug_handle));
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this->cheat_process_debug_handle = svc::InvalidHandle;
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/* Save cheat toggles. */
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if (this->always_save_cheat_toggles || this->should_save_cheat_toggles) {
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this->SaveCheatToggles(this->cheat_process_metadata.program_id);
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this->should_save_cheat_toggles = false;
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}
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/* Clear metadata. */
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static_assert(util::is_pod<decltype(this->cheat_process_metadata)>::value, "CheatProcessMetadata definition!");
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std::memset(&this->cheat_process_metadata, 0, sizeof(this->cheat_process_metadata));
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/* Clear cheat list. */
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this->ResetAllCheatEntries();
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/* Clear frozen addresses. */
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this->frozen_addresses_map.clear();
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/* Signal to our fans. */
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this->cheat_process_event.Signal();
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}
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}
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bool HasActiveCheatProcess() {
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/* Note: This function *MUST* be called only with the cheat lock held. */
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os::ProcessId pid;
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bool has_cheat_process = this->cheat_process_debug_handle != svc::InvalidHandle;
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has_cheat_process &= R_SUCCEEDED(os::TryGetProcessId(&pid, this->cheat_process_debug_handle));
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has_cheat_process &= R_SUCCEEDED(pm::dmnt::GetApplicationProcessId(&pid));
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has_cheat_process &= (pid == this->cheat_process_metadata.process_id);
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if (!has_cheat_process) {
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this->CloseActiveCheatProcess();
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}
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return has_cheat_process;
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}
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Result EnsureCheatProcess() {
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R_UNLESS(this->HasActiveCheatProcess(), ResultCheatNotAttached());
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return ResultSuccess();
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}
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Handle GetCheatProcessHandle() const {
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return this->cheat_process_debug_handle;
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}
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Handle HookToCreateApplicationProcess() const {
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Handle h = svc::InvalidHandle;
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R_ABORT_UNLESS(pm::dmnt::HookToCreateApplicationProcess(&h));
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return h;
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}
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void StartProcess(os::ProcessId process_id) const {
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R_ABORT_UNLESS(pm::dmnt::StartProcess(process_id));
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}
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public:
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CheatProcessManager() : cheat_lock(false), unsafe_break_event(os::EventClearMode_ManualClear), debug_events_event(os::EventClearMode_AutoClear), cheat_process_event(os::EventClearMode_AutoClear, true) {
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/* Learn whether we should enable cheats by default. */
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{
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u8 en = 0;
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if (settings::fwdbg::GetSettingsItemValue(&en, sizeof(en), "atmosphere", "dmnt_cheats_enabled_by_default") == sizeof(en)) {
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this->enable_cheats_by_default = (en != 0);
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}
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en = 0;
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if (settings::fwdbg::GetSettingsItemValue( &en, sizeof(en), "atmosphere", "dmnt_always_save_cheat_toggles") == sizeof(en)) {
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this->always_save_cheat_toggles = (en != 0);
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}
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}
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/* Spawn application detection thread, spawn cheat vm thread. */
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R_ABORT_UNLESS(os::CreateThread(std::addressof(this->detect_thread), DetectLaunchThread, this, this->detect_thread_stack, ThreadStackSize, AMS_GET_SYSTEM_THREAD_PRIORITY(dmnt, CheatDetect)));
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os::SetThreadNamePointer(std::addressof(this->detect_thread), AMS_GET_SYSTEM_THREAD_NAME(dmnt, CheatDetect));
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R_ABORT_UNLESS(os::CreateThread(std::addressof(this->vm_thread), VirtualMachineThread, this, this->vm_thread_stack, ThreadStackSize, AMS_GET_SYSTEM_THREAD_PRIORITY(dmnt, CheatVirtualMachine)));
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os::SetThreadNamePointer(std::addressof(this->vm_thread), AMS_GET_SYSTEM_THREAD_NAME(dmnt, CheatVirtualMachine));
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R_ABORT_UNLESS(os::CreateThread(std::addressof(this->debug_events_thread), DebugEventsThread, this, this->debug_events_thread_stack, ThreadStackSize, AMS_GET_SYSTEM_THREAD_PRIORITY(dmnt, CheatDebugEvents)));
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os::SetThreadNamePointer(std::addressof(this->debug_events_thread), AMS_GET_SYSTEM_THREAD_NAME(dmnt, CheatDebugEvents));
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/* Start threads. */
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os::StartThread(std::addressof(this->detect_thread));
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os::StartThread(std::addressof(this->vm_thread));
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os::StartThread(std::addressof(this->debug_events_thread));
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}
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bool GetHasActiveCheatProcess() {
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std::scoped_lock lk(this->cheat_lock);
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return this->HasActiveCheatProcess();
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}
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Handle GetCheatProcessEventHandle() const {
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return this->cheat_process_event.GetReadableHandle();
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}
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Result GetCheatProcessMetadata(CheatProcessMetadata *out) {
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std::scoped_lock lk(this->cheat_lock);
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R_TRY(this->EnsureCheatProcess());
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std::memcpy(out, &this->cheat_process_metadata, sizeof(*out));
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return ResultSuccess();
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}
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Result ForceOpenCheatProcess() {
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return this->AttachToApplicationProcess(false);
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}
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Result ReadCheatProcessMemoryUnsafe(u64 proc_addr, void *out_data, size_t size) {
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return svcReadDebugProcessMemory(out_data, this->GetCheatProcessHandle(), proc_addr, size);
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}
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Result WriteCheatProcessMemoryUnsafe(u64 proc_addr, const void *data, size_t size) {
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R_TRY(svcWriteDebugProcessMemory(this->GetCheatProcessHandle(), data, proc_addr, size));
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for (auto& [address, value] : this->frozen_addresses_map) {
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/* Map is ordered, so break when we can. */
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if (address >= proc_addr + size) {
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break;
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}
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/* Check if we need to write. */
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if (proc_addr <= address && address < proc_addr + size) {
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const size_t offset = (address - proc_addr);
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const size_t copy_size = std::min(sizeof(value.value), size - offset);
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std::memcpy(&value.value, reinterpret_cast<void *>(reinterpret_cast<uintptr_t>(data) + offset), copy_size);
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}
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}
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return ResultSuccess();
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}
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Result PauseCheatProcessUnsafe() {
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this->broken_unsafe = true;
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this->unsafe_break_event.Clear();
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return svcBreakDebugProcess(this->GetCheatProcessHandle());
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}
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Result ResumeCheatProcessUnsafe() {
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this->broken_unsafe = false;
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this->unsafe_break_event.Signal();
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dmnt::cheat::impl::ContinueCheatProcess(this->GetCheatProcessHandle());
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return ResultSuccess();
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}
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Result GetCheatProcessMappingCount(u64 *out_count) {
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std::scoped_lock lk(this->cheat_lock);
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R_TRY(this->EnsureCheatProcess());
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MemoryInfo mem_info;
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u64 address = 0, count = 0;
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do {
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mem_info.perm = Perm_None;
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u32 tmp;
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if (R_FAILED(svcQueryDebugProcessMemory(&mem_info, &tmp, this->GetCheatProcessHandle(), address))) {
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break;
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}
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if (mem_info.perm != Perm_None) {
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count++;
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}
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address = mem_info.addr + mem_info.size;
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} while (address != 0);
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*out_count = count;
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return ResultSuccess();
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}
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Result GetCheatProcessMappings(MemoryInfo *mappings, size_t max_count, u64 *out_count, u64 offset) {
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std::scoped_lock lk(this->cheat_lock);
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R_TRY(this->EnsureCheatProcess());
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MemoryInfo mem_info;
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u64 address = 0, total_count = 0, written_count = 0;
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do {
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mem_info.perm = Perm_None;
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u32 tmp;
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if (R_FAILED(svcQueryDebugProcessMemory(&mem_info, &tmp, this->GetCheatProcessHandle(), address))) {
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break;
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}
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if (mem_info.perm != Perm_None) {
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if (offset <= total_count && written_count < max_count) {
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mappings[written_count++] = mem_info;
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}
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total_count++;
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}
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address = mem_info.addr + mem_info.size;
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} while (address != 0 && written_count < max_count);
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*out_count = written_count;
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return ResultSuccess();
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}
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Result ReadCheatProcessMemory(u64 proc_addr, void *out_data, size_t size) {
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std::scoped_lock lk(this->cheat_lock);
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R_TRY(this->EnsureCheatProcess());
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return this->ReadCheatProcessMemoryUnsafe(proc_addr, out_data, size);
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}
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Result WriteCheatProcessMemory(u64 proc_addr, const void *data, size_t size) {
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std::scoped_lock lk(this->cheat_lock);
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R_TRY(this->EnsureCheatProcess());
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return this->WriteCheatProcessMemoryUnsafe(proc_addr, data, size);
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}
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Result QueryCheatProcessMemory(MemoryInfo *mapping, u64 address) {
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std::scoped_lock lk(this->cheat_lock);
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R_TRY(this->EnsureCheatProcess());
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u32 tmp;
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return svcQueryDebugProcessMemory(mapping, &tmp, this->GetCheatProcessHandle(), address);
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}
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Result PauseCheatProcess() {
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std::scoped_lock lk(this->cheat_lock);
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R_TRY(this->EnsureCheatProcess());
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return this->PauseCheatProcessUnsafe();
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}
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Result ResumeCheatProcess() {
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std::scoped_lock lk(this->cheat_lock);
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R_TRY(this->EnsureCheatProcess());
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return this->ResumeCheatProcessUnsafe();
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}
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Result GetCheatCount(u64 *out_count) {
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std::scoped_lock lk(this->cheat_lock);
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R_TRY(this->EnsureCheatProcess());
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size_t count = 0;
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for (size_t i = 0; i < MaxCheatCount; i++) {
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if (this->cheat_entries[i].definition.num_opcodes) {
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count++;
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}
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}
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*out_count = count;
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return ResultSuccess();
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}
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Result GetCheats(CheatEntry *out_cheats, size_t max_count, u64 *out_count, u64 offset) {
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std::scoped_lock lk(this->cheat_lock);
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R_TRY(this->EnsureCheatProcess());
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size_t count = 0, total_count = 0;
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for (size_t i = 0; i < MaxCheatCount && count < max_count; i++) {
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if (this->cheat_entries[i].definition.num_opcodes) {
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total_count++;
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if (total_count > offset) {
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out_cheats[count++] = this->cheat_entries[i];
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}
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}
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}
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*out_count = count;
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return ResultSuccess();
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}
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Result GetCheatById(CheatEntry *out_cheat, u32 cheat_id) {
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std::scoped_lock lk(this->cheat_lock);
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R_TRY(this->EnsureCheatProcess());
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const CheatEntry *entry = this->GetCheatEntryById(cheat_id);
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R_UNLESS(entry != nullptr, ResultCheatUnknownId());
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R_UNLESS(entry->definition.num_opcodes != 0, ResultCheatUnknownId());
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*out_cheat = *entry;
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return ResultSuccess();
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}
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Result ToggleCheat(u32 cheat_id) {
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std::scoped_lock lk(this->cheat_lock);
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R_TRY(this->EnsureCheatProcess());
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CheatEntry *entry = this->GetCheatEntryById(cheat_id);
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R_UNLESS(entry != nullptr, ResultCheatUnknownId());
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R_UNLESS(entry->definition.num_opcodes != 0, ResultCheatUnknownId());
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R_UNLESS(cheat_id != 0, ResultCheatCannotDisable());
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entry->enabled = !entry->enabled;
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/* Trigger a VM reload. */
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this->SetNeedsReloadVm(true);
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return ResultSuccess();
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}
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Result AddCheat(u32 *out_id, const CheatDefinition &def, bool enabled) {
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std::scoped_lock lk(this->cheat_lock);
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R_TRY(this->EnsureCheatProcess());
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R_UNLESS(def.num_opcodes != 0, ResultCheatInvalid());
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R_UNLESS(def.num_opcodes <= util::size(def.opcodes), ResultCheatInvalid());
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CheatEntry *new_entry = this->GetFreeCheatEntry();
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R_UNLESS(new_entry != nullptr, ResultCheatOutOfResource());
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new_entry->enabled = enabled;
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new_entry->definition = def;
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/* Trigger a VM reload. */
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this->SetNeedsReloadVm(true);
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return ResultSuccess();
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}
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Result RemoveCheat(u32 cheat_id) {
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std::scoped_lock lk(this->cheat_lock);
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R_TRY(this->EnsureCheatProcess());
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R_UNLESS(cheat_id < MaxCheatCount, ResultCheatUnknownId());
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this->ResetCheatEntry(cheat_id);
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/* Trigger a VM reload. */
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this->SetNeedsReloadVm(true);
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return ResultSuccess();
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}
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Result ReadStaticRegister(u64 *out, size_t which) {
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std::scoped_lock lk(this->cheat_lock);
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R_TRY(this->EnsureCheatProcess());
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R_UNLESS(which < CheatVirtualMachine::NumStaticRegisters, ResultCheatInvalid());
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*out = this->cheat_vm.GetStaticRegister(which);
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return ResultSuccess();
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}
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Result WriteStaticRegister(size_t which, u64 value) {
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std::scoped_lock lk(this->cheat_lock);
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R_TRY(this->EnsureCheatProcess());
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R_UNLESS(which < CheatVirtualMachine::NumStaticRegisters, ResultCheatInvalid());
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|
|
this->cheat_vm.SetStaticRegister(which, value);
|
|
return ResultSuccess();
|
|
}
|
|
|
|
Result ResetStaticRegisters() {
|
|
std::scoped_lock lk(this->cheat_lock);
|
|
|
|
R_TRY(this->EnsureCheatProcess());
|
|
|
|
this->cheat_vm.ResetStaticRegisters();
|
|
return ResultSuccess();
|
|
}
|
|
|
|
Result GetFrozenAddressCount(u64 *out_count) {
|
|
std::scoped_lock lk(this->cheat_lock);
|
|
|
|
R_TRY(this->EnsureCheatProcess());
|
|
|
|
*out_count = this->frozen_addresses_map.size();
|
|
return ResultSuccess();
|
|
}
|
|
|
|
Result GetFrozenAddresses(FrozenAddressEntry *frz_addrs, size_t max_count, u64 *out_count, u64 offset) {
|
|
std::scoped_lock lk(this->cheat_lock);
|
|
|
|
R_TRY(this->EnsureCheatProcess());
|
|
|
|
u64 total_count = 0, written_count = 0;
|
|
for (auto const& [address, value] : this->frozen_addresses_map) {
|
|
if (written_count >= max_count) {
|
|
break;
|
|
}
|
|
|
|
if (offset <= total_count) {
|
|
frz_addrs[written_count].address = address;
|
|
frz_addrs[written_count].value = value;
|
|
written_count++;
|
|
}
|
|
total_count++;
|
|
}
|
|
|
|
*out_count = written_count;
|
|
return ResultSuccess();
|
|
}
|
|
|
|
Result GetFrozenAddress(FrozenAddressEntry *frz_addr, u64 address) {
|
|
std::scoped_lock lk(this->cheat_lock);
|
|
|
|
R_TRY(this->EnsureCheatProcess());
|
|
|
|
const auto it = this->frozen_addresses_map.find(address);
|
|
R_UNLESS(it != this->frozen_addresses_map.end(), ResultFrozenAddressNotFound());
|
|
|
|
frz_addr->address = it->first;
|
|
frz_addr->value = it->second;
|
|
return ResultSuccess();
|
|
}
|
|
|
|
Result EnableFrozenAddress(u64 *out_value, u64 address, u64 width) {
|
|
std::scoped_lock lk(this->cheat_lock);
|
|
|
|
R_TRY(this->EnsureCheatProcess());
|
|
|
|
R_UNLESS(this->frozen_addresses_map.size() < MaxFrozenAddressCount, ResultFrozenAddressOutOfResource());
|
|
|
|
const auto it = this->frozen_addresses_map.find(address);
|
|
R_UNLESS(it == this->frozen_addresses_map.end(), ResultFrozenAddressAlreadyExists());
|
|
|
|
FrozenAddressValue value = {};
|
|
value.width = width;
|
|
R_TRY(this->ReadCheatProcessMemoryUnsafe(address, &value.value, width));
|
|
|
|
this->frozen_addresses_map[address] = value;
|
|
*out_value = value.value;
|
|
return ResultSuccess();
|
|
}
|
|
|
|
Result DisableFrozenAddress(u64 address) {
|
|
std::scoped_lock lk(this->cheat_lock);
|
|
|
|
R_TRY(this->EnsureCheatProcess());
|
|
|
|
const auto it = this->frozen_addresses_map.find(address);
|
|
R_UNLESS(it != this->frozen_addresses_map.end(), ResultFrozenAddressNotFound());
|
|
|
|
this->frozen_addresses_map.erase(it);
|
|
return ResultSuccess();
|
|
}
|
|
|
|
};
|
|
|
|
void CheatProcessManager::DetectLaunchThread(void *_this) {
|
|
CheatProcessManager *this_ptr = reinterpret_cast<CheatProcessManager *>(_this);
|
|
Event hook;
|
|
while (true) {
|
|
eventLoadRemote(&hook, this_ptr->HookToCreateApplicationProcess(), true);
|
|
if (R_SUCCEEDED(eventWait(&hook, std::numeric_limits<u64>::max()))) {
|
|
this_ptr->AttachToApplicationProcess(true);
|
|
}
|
|
eventClose(&hook);
|
|
}
|
|
}
|
|
|
|
void CheatProcessManager::DebugEventsThread(void *_this) {
|
|
CheatProcessManager *this_ptr = reinterpret_cast<CheatProcessManager *>(_this);
|
|
while (true) {
|
|
/* Atomically wait (and clear) signal for new process. */
|
|
this_ptr->debug_events_event.Wait();
|
|
while (true) {
|
|
Handle cheat_process_handle = this_ptr->GetCheatProcessHandle();
|
|
while (cheat_process_handle != svc::InvalidHandle && R_SUCCEEDED(svcWaitSynchronizationSingle(this_ptr->GetCheatProcessHandle(), std::numeric_limits<u64>::max()))) {
|
|
this_ptr->cheat_lock.Lock();
|
|
ON_SCOPE_EXIT { this_ptr->cheat_lock.Unlock(); };
|
|
{
|
|
ON_SCOPE_EXIT { cheat_process_handle = this_ptr->GetCheatProcessHandle(); };
|
|
|
|
/* If we did an unsafe break, wait until we're not broken. */
|
|
if (this_ptr->broken_unsafe) {
|
|
this_ptr->cheat_lock.Unlock();
|
|
this_ptr->unsafe_break_event.Wait();
|
|
this_ptr->cheat_lock.Lock();
|
|
if (this_ptr->GetCheatProcessHandle() != svc::InvalidHandle) {
|
|
continue;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Handle any pending debug events. */
|
|
if (this_ptr->HasActiveCheatProcess()) {
|
|
R_TRY_CATCH(dmnt::cheat::impl::ContinueCheatProcess(this_ptr->GetCheatProcessHandle())) {
|
|
R_CATCH(svc::ResultProcessTerminated) {
|
|
this_ptr->CloseActiveCheatProcess();
|
|
break;
|
|
}
|
|
} R_END_TRY_CATCH_WITH_ABORT_UNLESS;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* WaitSynchronization failed. This means someone canceled our synchronization, possibly us. */
|
|
/* Let's check if we should quit! */
|
|
std::scoped_lock lk(this_ptr->cheat_lock);
|
|
if (!this_ptr->HasActiveCheatProcess()) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void CheatProcessManager::VirtualMachineThread(void *_this) {
|
|
CheatProcessManager *this_ptr = reinterpret_cast<CheatProcessManager *>(_this);
|
|
while (true) {
|
|
/* Apply cheats. */
|
|
{
|
|
std::scoped_lock lk(this_ptr->cheat_lock);
|
|
|
|
if (this_ptr->HasActiveCheatProcess()) {
|
|
/* Execute VM. */
|
|
if (!this_ptr->GetNeedsReloadVm() || this_ptr->cheat_vm.LoadProgram(this_ptr->cheat_entries, util::size(this_ptr->cheat_entries))) {
|
|
this_ptr->SetNeedsReloadVm(false);
|
|
|
|
/* Execute program only if it has opcodes. */
|
|
if (this_ptr->cheat_vm.GetProgramSize()) {
|
|
this_ptr->cheat_vm.Execute(&this_ptr->cheat_process_metadata);
|
|
}
|
|
}
|
|
|
|
/* Apply frozen addresses. */
|
|
for (auto const& [address, value] : this_ptr->frozen_addresses_map) {
|
|
/* Use Write SVC directly, to avoid the usual frozen address update logic. */
|
|
svcWriteDebugProcessMemory(this_ptr->GetCheatProcessHandle(), &value.value, address, value.width);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Sleep until next potential execution. */
|
|
constexpr u64 ONE_SECOND = 1'000'000'000ul;
|
|
constexpr u64 TIMES_PER_SECOND = 12;
|
|
constexpr u64 DELAY_TIME = ONE_SECOND / TIMES_PER_SECOND;
|
|
svcSleepThread(DELAY_TIME);
|
|
}
|
|
}
|
|
|
|
#define R_ABORT_UNLESS_IF_NEW_PROCESS(res) \
|
|
if (on_process_launch) { \
|
|
R_ABORT_UNLESS(res); \
|
|
} else { \
|
|
R_TRY(res); \
|
|
}
|
|
|
|
Result CheatProcessManager::AttachToApplicationProcess(bool on_process_launch) {
|
|
std::scoped_lock lk(this->cheat_lock);
|
|
|
|
/* Close the active process, if needed. */
|
|
{
|
|
if (this->HasActiveCheatProcess()) {
|
|
/* When forcing attach, we're done. */
|
|
R_SUCCEED_IF(!on_process_launch);
|
|
}
|
|
|
|
/* Detach from the current process, if it's open. */
|
|
this->CloseActiveCheatProcess();
|
|
}
|
|
|
|
/* Get the application process's ID. */
|
|
R_ABORT_UNLESS_IF_NEW_PROCESS(pm::dmnt::GetApplicationProcessId(&this->cheat_process_metadata.process_id));
|
|
auto proc_guard = SCOPE_GUARD {
|
|
if (on_process_launch) {
|
|
this->StartProcess(this->cheat_process_metadata.process_id);
|
|
}
|
|
this->cheat_process_metadata.process_id = os::ProcessId{};
|
|
};
|
|
|
|
/* Get process handle, use it to learn memory extents. */
|
|
{
|
|
Handle proc_h = svc::InvalidHandle;
|
|
ncm::ProgramLocation loc = {};
|
|
cfg::OverrideStatus status = {};
|
|
ON_SCOPE_EXIT { if (proc_h != svc::InvalidHandle) { R_ABORT_UNLESS(svcCloseHandle(proc_h)); } };
|
|
|
|
R_ABORT_UNLESS_IF_NEW_PROCESS(pm::dmnt::AtmosphereGetProcessInfo(&proc_h, &loc, &status, this->cheat_process_metadata.process_id));
|
|
this->cheat_process_metadata.program_id = loc.program_id;
|
|
|
|
{
|
|
map::AddressSpaceInfo as_info;
|
|
R_ABORT_UNLESS(map::GetProcessAddressSpaceInfo(&as_info, proc_h));
|
|
this->cheat_process_metadata.heap_extents.base = as_info.heap_base;
|
|
this->cheat_process_metadata.heap_extents.size = as_info.heap_size;
|
|
this->cheat_process_metadata.alias_extents.base = as_info.alias_base;
|
|
this->cheat_process_metadata.alias_extents.size = as_info.alias_size;
|
|
this->cheat_process_metadata.aslr_extents.base = as_info.aslr_base;
|
|
this->cheat_process_metadata.aslr_extents.size = as_info.aslr_size;
|
|
}
|
|
|
|
/* If new process launch, we may not want to actually attach. */
|
|
if (on_process_launch) {
|
|
R_UNLESS(status.IsCheatEnabled(), ResultCheatNotAttached());
|
|
}
|
|
}
|
|
|
|
/* Get module information from loader. */
|
|
{
|
|
LoaderModuleInfo proc_modules[2];
|
|
s32 num_modules;
|
|
|
|
/* TODO: ldr::dmnt:: */
|
|
R_ABORT_UNLESS_IF_NEW_PROCESS(ldrDmntGetProcessModuleInfo(static_cast<u64>(this->cheat_process_metadata.process_id), proc_modules, util::size(proc_modules), &num_modules));
|
|
|
|
/* All applications must have two modules. */
|
|
/* Only accept one (which means we're attaching to HBL) */
|
|
/* if we aren't auto-attaching. */
|
|
const LoaderModuleInfo *proc_module = nullptr;
|
|
if (num_modules == 2) {
|
|
proc_module = &proc_modules[1];
|
|
} else if (num_modules == 1 && !on_process_launch) {
|
|
proc_module = &proc_modules[0];
|
|
} else {
|
|
return ResultCheatNotAttached();
|
|
}
|
|
|
|
this->cheat_process_metadata.main_nso_extents.base = proc_module->base_address;
|
|
this->cheat_process_metadata.main_nso_extents.size = proc_module->size;
|
|
std::memcpy(this->cheat_process_metadata.main_nso_build_id, proc_module->build_id, sizeof(this->cheat_process_metadata.main_nso_build_id));
|
|
}
|
|
|
|
/* Read cheats off the SD. */
|
|
if (!this->LoadCheats(this->cheat_process_metadata.program_id, this->cheat_process_metadata.main_nso_build_id) ||
|
|
!this->LoadCheatToggles(this->cheat_process_metadata.program_id)) {
|
|
/* If new process launch, require success. */
|
|
R_UNLESS(!on_process_launch, ResultCheatNotAttached());
|
|
}
|
|
|
|
/* Open a debug handle. */
|
|
R_ABORT_UNLESS_IF_NEW_PROCESS(svcDebugActiveProcess(&this->cheat_process_debug_handle, static_cast<u64>(this->cheat_process_metadata.process_id)));
|
|
|
|
/* Cancel process guard. */
|
|
proc_guard.Cancel();
|
|
|
|
/* Reset broken state. */
|
|
this->broken_unsafe = false;
|
|
this->unsafe_break_event.Signal();
|
|
|
|
/* If new process, start the process. */
|
|
if (on_process_launch) {
|
|
this->StartProcess(this->cheat_process_metadata.process_id);
|
|
}
|
|
|
|
/* Signal to the debug events thread. */
|
|
this->debug_events_event.Signal();
|
|
|
|
/* Signal to our fans. */
|
|
this->cheat_process_event.Signal();
|
|
|
|
return ResultSuccess();
|
|
}
|
|
|
|
#undef R_ABORT_UNLESS_IF_NEW_PROCESS
|
|
|
|
bool CheatProcessManager::ParseCheats(const char *s, size_t len) {
|
|
/* Trigger a VM reload. */
|
|
this->SetNeedsReloadVm(true);
|
|
|
|
/* Parse the input string. */
|
|
size_t i = 0;
|
|
CheatEntry *cur_entry = nullptr;
|
|
while (i < len) {
|
|
if (std::isspace(static_cast<unsigned char>(s[i]))) {
|
|
/* Just ignore whitespace. */
|
|
i++;
|
|
} else if (s[i] == '[') {
|
|
/* Parse a readable cheat name. */
|
|
cur_entry = this->GetFreeCheatEntry();
|
|
if (cur_entry == nullptr) {
|
|
return false;
|
|
}
|
|
|
|
/* Extract name bounds. */
|
|
size_t j = i + 1;
|
|
while (s[j] != ']') {
|
|
j++;
|
|
if (j >= len) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* s[i+1:j] is cheat name. */
|
|
const size_t cheat_name_len = std::min(j - i - 1, sizeof(cur_entry->definition.readable_name));
|
|
std::memcpy(cur_entry->definition.readable_name, &s[i+1], cheat_name_len);
|
|
cur_entry->definition.readable_name[cheat_name_len] = 0;
|
|
|
|
/* Skip onwards. */
|
|
i = j + 1;
|
|
} else if (s[i] == '{') {
|
|
/* We're parsing a master cheat. */
|
|
cur_entry = &this->cheat_entries[0];
|
|
|
|
/* There can only be one master cheat. */
|
|
if (cur_entry->definition.num_opcodes > 0) {
|
|
return false;
|
|
}
|
|
|
|
/* Extract name bounds */
|
|
size_t j = i + 1;
|
|
while (s[j] != '}') {
|
|
j++;
|
|
if (j >= len) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* s[i+1:j] is cheat name. */
|
|
const size_t cheat_name_len = std::min(j - i - 1, sizeof(cur_entry->definition.readable_name));
|
|
memcpy(cur_entry->definition.readable_name, &s[i+1], cheat_name_len);
|
|
cur_entry->definition.readable_name[cheat_name_len] = 0;
|
|
|
|
/* Skip onwards. */
|
|
i = j + 1;
|
|
} else if (std::isxdigit(static_cast<unsigned char>(s[i]))) {
|
|
/* Make sure that we have a cheat open. */
|
|
if (cur_entry == nullptr) {
|
|
return false;
|
|
}
|
|
|
|
/* Bounds check the opcode count. */
|
|
if (cur_entry->definition.num_opcodes >= util::size(cur_entry->definition.opcodes)) {
|
|
return false;
|
|
}
|
|
|
|
/* We're parsing an instruction, so validate it's 8 hex digits. */
|
|
for (size_t j = 1; j < 8; j++) {
|
|
/* Validate 8 hex chars. */
|
|
if (i + j >= len || !std::isxdigit(static_cast<unsigned char>(s[i+j]))) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* Parse the new opcode. */
|
|
char hex_str[9] = {0};
|
|
std::memcpy(hex_str, &s[i], 8);
|
|
cur_entry->definition.opcodes[cur_entry->definition.num_opcodes++] = std::strtoul(hex_str, NULL, 16);
|
|
|
|
/* Skip onwards. */
|
|
i += 8;
|
|
} else {
|
|
/* Unexpected character encountered. */
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* Master cheat can't be disabled. */
|
|
if (this->cheat_entries[0].definition.num_opcodes > 0) {
|
|
this->cheat_entries[0].enabled = true;
|
|
}
|
|
|
|
/* Enable all entries we parsed. */
|
|
for (size_t i = 1; i < MaxCheatCount; i++) {
|
|
if (this->cheat_entries[i].definition.num_opcodes > 0) {
|
|
this->cheat_entries[i].enabled = this->enable_cheats_by_default;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool CheatProcessManager::ParseCheatToggles(const char *s, size_t len) {
|
|
size_t i = 0;
|
|
char cur_cheat_name[sizeof(CheatEntry::definition.readable_name)];
|
|
char toggle[8];
|
|
|
|
while (i < len) {
|
|
if (std::isspace(static_cast<unsigned char>(s[i]))) {
|
|
/* Just ignore whitespace. */
|
|
i++;
|
|
} else if (s[i] == '[') {
|
|
/* Extract name bounds. */
|
|
size_t j = i + 1;
|
|
while (s[j] != ']') {
|
|
j++;
|
|
if (j >= len) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* s[i+1:j] is cheat name. */
|
|
const size_t cheat_name_len = std::min(j - i - 1, sizeof(cur_cheat_name));
|
|
std::memcpy(cur_cheat_name, &s[i+1], cheat_name_len);
|
|
cur_cheat_name[cheat_name_len] = 0;
|
|
|
|
/* Skip onwards. */
|
|
i = j + 1;
|
|
|
|
/* Skip whitespace. */
|
|
while (std::isspace(static_cast<unsigned char>(s[i]))) {
|
|
i++;
|
|
}
|
|
|
|
/* Parse whether to toggle. */
|
|
j = i + 1;
|
|
while (!std::isspace(static_cast<unsigned char>(s[j]))) {
|
|
j++;
|
|
if (j >= len || (j - i) >= sizeof(toggle)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* s[i:j] is toggle. */
|
|
const size_t toggle_len = (j - i);
|
|
std::memcpy(toggle, &s[i], toggle_len);
|
|
toggle[toggle_len] = 0;
|
|
|
|
/* Allow specifying toggle for not present cheat. */
|
|
CheatEntry *entry = this->GetCheatEntryByReadableName(cur_cheat_name);
|
|
if (entry != nullptr) {
|
|
if (strcasecmp(toggle, "1") == 0 || strcasecmp(toggle, "true") == 0 || strcasecmp(toggle, "on") == 0) {
|
|
entry->enabled = true;
|
|
} else if (strcasecmp(toggle, "0") == 0 || strcasecmp(toggle, "false") == 0 || strcasecmp(toggle, "off") == 0) {
|
|
entry->enabled = false;
|
|
}
|
|
}
|
|
|
|
/* Skip onwards. */
|
|
i = j + 1;
|
|
} else {
|
|
/* Unexpected character encountered. */
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool CheatProcessManager::LoadCheats(const ncm::ProgramId program_id, const u8 *build_id) {
|
|
/* Reset existing entries. */
|
|
this->ResetAllCheatEntries();
|
|
|
|
/* Open the file for program/build_id. */
|
|
fs::FileHandle file;
|
|
{
|
|
char path[fs::EntryNameLengthMax + 1];
|
|
std::snprintf(path, sizeof(path), "sdmc:/atmosphere/contents/%016lx/cheats/%02x%02x%02x%02x%02x%02x%02x%02x.txt", program_id.value,
|
|
build_id[0], build_id[1], build_id[2], build_id[3], build_id[4], build_id[5], build_id[6], build_id[7]);
|
|
if (R_FAILED(fs::OpenFile(std::addressof(file), path, fs::OpenMode_Read))) {
|
|
return false;
|
|
}
|
|
}
|
|
ON_SCOPE_EXIT { fs::CloseFile(file); };
|
|
|
|
/* Get file size. */
|
|
s64 file_size;
|
|
if (R_FAILED(fs::GetFileSize(std::addressof(file_size), file))) {
|
|
return false;
|
|
}
|
|
|
|
/* Allocate cheat txt buffer. */
|
|
char *cht_txt = static_cast<char *>(std::malloc(file_size + 1));
|
|
if (cht_txt == nullptr) {
|
|
return false;
|
|
}
|
|
ON_SCOPE_EXIT { std::free(cht_txt); };
|
|
|
|
/* Read cheats into buffer. */
|
|
if (R_FAILED(fs::ReadFile(file, 0, cht_txt, file_size))) {
|
|
return false;
|
|
}
|
|
cht_txt[file_size] = '\x00';
|
|
|
|
/* Parse cheat buffer. */
|
|
return this->ParseCheats(cht_txt, std::strlen(cht_txt));
|
|
}
|
|
|
|
bool CheatProcessManager::LoadCheatToggles(const ncm::ProgramId program_id) {
|
|
/* Unless we successfully parse, don't save toggles on close. */
|
|
this->should_save_cheat_toggles = false;
|
|
|
|
/* Open the file for program_id. */
|
|
fs::FileHandle file;
|
|
{
|
|
char path[fs::EntryNameLengthMax + 1];
|
|
std::snprintf(path, sizeof(path), "sdmc:/atmosphere/contents/%016lx/cheats/toggles.txt", program_id.value);
|
|
if (R_FAILED(fs::OpenFile(std::addressof(file), path, fs::OpenMode_Read))) {
|
|
/* No file presence is allowed. */
|
|
return true;
|
|
}
|
|
}
|
|
ON_SCOPE_EXIT { fs::CloseFile(file); };
|
|
|
|
/* Get file size. */
|
|
s64 file_size;
|
|
if (R_FAILED(fs::GetFileSize(std::addressof(file_size), file))) {
|
|
return false;
|
|
}
|
|
|
|
/* Allocate toggle txt buffer. */
|
|
char *tg_txt = static_cast<char *>(std::malloc(file_size + 1));
|
|
if (tg_txt == nullptr) {
|
|
return false;
|
|
}
|
|
ON_SCOPE_EXIT { std::free(tg_txt); };
|
|
|
|
/* Read cheats into buffer. */
|
|
if (R_FAILED(fs::ReadFile(file, 0, tg_txt, file_size))) {
|
|
return false;
|
|
}
|
|
tg_txt[file_size] = '\x00';
|
|
|
|
/* Parse toggle buffer. */
|
|
this->should_save_cheat_toggles = this->ParseCheatToggles(tg_txt, std::strlen(tg_txt));
|
|
return this->should_save_cheat_toggles;
|
|
}
|
|
|
|
void CheatProcessManager::SaveCheatToggles(const ncm::ProgramId program_id) {
|
|
/* Open the file for program_id. */
|
|
fs::FileHandle file;
|
|
{
|
|
char path[fs::EntryNameLengthMax + 1];
|
|
std::snprintf(path, sizeof(path), "sdmc:/atmosphere/contents/%016lx/cheats/toggles.txt", program_id.value);
|
|
fs::DeleteFile(path);
|
|
fs::CreateFile(path, 0);
|
|
if (R_FAILED(fs::OpenFile(std::addressof(file), path, fs::OpenMode_Write | fs::OpenMode_AllowAppend))) {
|
|
return;
|
|
}
|
|
}
|
|
ON_SCOPE_EXIT { fs::CloseFile(file); };
|
|
|
|
s64 offset = 0;
|
|
char buf[0x100];
|
|
|
|
/* Save all non-master cheats. */
|
|
for (size_t i = 1; i < MaxCheatCount; i++) {
|
|
if (this->cheat_entries[i].definition.num_opcodes != 0) {
|
|
std::snprintf(buf, sizeof(buf), "[%s]\n", this->cheat_entries[i].definition.readable_name);
|
|
const size_t name_len = std::strlen(buf);
|
|
if (R_SUCCEEDED(fs::WriteFile(file, offset, buf, name_len, fs::WriteOption::Flush))) {
|
|
offset += name_len;
|
|
}
|
|
|
|
const char *entry = this->cheat_entries[i].enabled ? "true\n" : "false\n";
|
|
const size_t entry_len = std::strlen(entry);
|
|
if (R_SUCCEEDED(fs::WriteFile(file, offset, entry, entry_len, fs::WriteOption::Flush))) {
|
|
offset += entry_len;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* Manager global. */
|
|
TYPED_STORAGE(CheatProcessManager) g_cheat_process_manager;
|
|
|
|
}
|
|
|
|
void InitializeCheatManager() {
|
|
/* Initialize the debug events manager (spawning its threads). */
|
|
InitializeDebugEventsManager();
|
|
|
|
/* Create the cheat process manager (spawning its threads). */
|
|
new (GetPointer(g_cheat_process_manager)) CheatProcessManager;
|
|
}
|
|
|
|
bool GetHasActiveCheatProcess() {
|
|
return GetReference(g_cheat_process_manager).GetHasActiveCheatProcess();
|
|
}
|
|
|
|
Handle GetCheatProcessEventHandle() {
|
|
return GetReference(g_cheat_process_manager).GetCheatProcessEventHandle();
|
|
}
|
|
|
|
Result GetCheatProcessMetadata(CheatProcessMetadata *out) {
|
|
return GetReference(g_cheat_process_manager).GetCheatProcessMetadata(out);
|
|
}
|
|
|
|
Result ForceOpenCheatProcess() {
|
|
return GetReference(g_cheat_process_manager).ForceOpenCheatProcess();
|
|
}
|
|
|
|
Result PauseCheatProcess() {
|
|
return GetReference(g_cheat_process_manager).PauseCheatProcess();
|
|
}
|
|
|
|
Result ResumeCheatProcess() {
|
|
return GetReference(g_cheat_process_manager).ResumeCheatProcess();
|
|
}
|
|
|
|
Result ReadCheatProcessMemoryUnsafe(u64 process_addr, void *out_data, size_t size) {
|
|
return GetReference(g_cheat_process_manager).ReadCheatProcessMemoryUnsafe(process_addr, out_data, size);
|
|
}
|
|
|
|
Result WriteCheatProcessMemoryUnsafe(u64 process_addr, void *data, size_t size) {
|
|
return GetReference(g_cheat_process_manager).WriteCheatProcessMemoryUnsafe(process_addr, data, size);
|
|
}
|
|
|
|
Result PauseCheatProcessUnsafe() {
|
|
return GetReference(g_cheat_process_manager).PauseCheatProcessUnsafe();
|
|
}
|
|
|
|
Result ResumeCheatProcessUnsafe() {
|
|
return GetReference(g_cheat_process_manager).ResumeCheatProcessUnsafe();
|
|
}
|
|
|
|
Result GetCheatProcessMappingCount(u64 *out_count) {
|
|
return GetReference(g_cheat_process_manager).GetCheatProcessMappingCount(out_count);
|
|
}
|
|
|
|
Result GetCheatProcessMappings(MemoryInfo *mappings, size_t max_count, u64 *out_count, u64 offset) {
|
|
return GetReference(g_cheat_process_manager).GetCheatProcessMappings(mappings, max_count, out_count, offset);
|
|
}
|
|
|
|
Result ReadCheatProcessMemory(u64 proc_addr, void *out_data, size_t size) {
|
|
return GetReference(g_cheat_process_manager).ReadCheatProcessMemory(proc_addr, out_data, size);
|
|
}
|
|
|
|
Result WriteCheatProcessMemory(u64 proc_addr, const void *data, size_t size) {
|
|
return GetReference(g_cheat_process_manager).WriteCheatProcessMemory(proc_addr, data, size);
|
|
}
|
|
|
|
Result QueryCheatProcessMemory(MemoryInfo *mapping, u64 address) {
|
|
return GetReference(g_cheat_process_manager).QueryCheatProcessMemory(mapping, address);
|
|
}
|
|
|
|
Result GetCheatCount(u64 *out_count) {
|
|
return GetReference(g_cheat_process_manager).GetCheatCount(out_count);
|
|
}
|
|
|
|
Result GetCheats(CheatEntry *cheats, size_t max_count, u64 *out_count, u64 offset) {
|
|
return GetReference(g_cheat_process_manager).GetCheats(cheats, max_count, out_count, offset);
|
|
}
|
|
|
|
Result GetCheatById(CheatEntry *out_cheat, u32 cheat_id) {
|
|
return GetReference(g_cheat_process_manager).GetCheatById(out_cheat, cheat_id);
|
|
}
|
|
|
|
Result ToggleCheat(u32 cheat_id) {
|
|
return GetReference(g_cheat_process_manager).ToggleCheat(cheat_id);
|
|
}
|
|
|
|
Result AddCheat(u32 *out_id, const CheatDefinition &def, bool enabled) {
|
|
return GetReference(g_cheat_process_manager).AddCheat(out_id, def, enabled);
|
|
}
|
|
|
|
Result RemoveCheat(u32 cheat_id) {
|
|
return GetReference(g_cheat_process_manager).RemoveCheat(cheat_id);
|
|
}
|
|
|
|
Result ReadStaticRegister(u64 *out, size_t which) {
|
|
return GetReference(g_cheat_process_manager).ReadStaticRegister(out, which);
|
|
}
|
|
|
|
Result WriteStaticRegister(size_t which, u64 value) {
|
|
return GetReference(g_cheat_process_manager).WriteStaticRegister(which, value);
|
|
}
|
|
|
|
Result ResetStaticRegisters() {
|
|
return GetReference(g_cheat_process_manager).ResetStaticRegisters();
|
|
}
|
|
|
|
Result GetFrozenAddressCount(u64 *out_count) {
|
|
return GetReference(g_cheat_process_manager).GetFrozenAddressCount(out_count);
|
|
}
|
|
|
|
Result GetFrozenAddresses(FrozenAddressEntry *frz_addrs, size_t max_count, u64 *out_count, u64 offset) {
|
|
return GetReference(g_cheat_process_manager).GetFrozenAddresses(frz_addrs, max_count, out_count, offset);
|
|
}
|
|
|
|
Result GetFrozenAddress(FrozenAddressEntry *frz_addr, u64 address) {
|
|
return GetReference(g_cheat_process_manager).GetFrozenAddress(frz_addr, address);
|
|
}
|
|
|
|
Result EnableFrozenAddress(u64 *out_value, u64 address, u64 width) {
|
|
return GetReference(g_cheat_process_manager).EnableFrozenAddress(out_value, address, width);
|
|
}
|
|
|
|
Result DisableFrozenAddress(u64 address) {
|
|
return GetReference(g_cheat_process_manager).DisableFrozenAddress(address);
|
|
}
|
|
|
|
}
|