mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-18 09:56:40 +00:00
278 lines
8.7 KiB
C++
278 lines
8.7 KiB
C++
/*
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* Copyright (c) 2018 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 <switch.h>
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#include "dmnt_cheat_manager.hpp"
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#include "dmnt_cheat_vm.hpp"
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#include "pm_shim.h"
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static HosMutex g_cheat_lock;
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static HosThread g_detect_thread, g_vm_thread;
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static IEvent *g_cheat_process_event;
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static DmntCheatVm *g_cheat_vm;
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static CheatProcessMetadata g_cheat_process_metadata = {0};
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static Handle g_cheat_process_debug_hnd = 0;
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void DmntCheatManager::CloseActiveCheatProcess() {
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if (g_cheat_process_debug_hnd != 0) {
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svcCloseHandle(g_cheat_process_debug_hnd);
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g_cheat_process_debug_hnd = 0;
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g_cheat_process_metadata = (CheatProcessMetadata){0};
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g_cheat_process_event->Signal();
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}
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}
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bool DmntCheatManager::HasActiveCheatProcess() {
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u64 tmp;
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bool has_cheat_process = g_cheat_process_debug_hnd != 0;
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if (has_cheat_process) {
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has_cheat_process &= R_SUCCEEDED(svcGetProcessId(&tmp, g_cheat_process_debug_hnd));
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}
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if (has_cheat_process) {
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has_cheat_process &= R_SUCCEEDED(pmdmntGetApplicationPid(&tmp));
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}
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if (has_cheat_process) {
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has_cheat_process &= tmp == g_cheat_process_metadata.process_id;
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}
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if (!has_cheat_process) {
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CloseActiveCheatProcess();
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}
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return has_cheat_process;
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}
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void DmntCheatManager::ContinueCheatProcess() {
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if (HasActiveCheatProcess()) {
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/* Loop getting debug events. */
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u8 tmp;
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while (R_SUCCEEDED(svcGetDebugEvent(&tmp, g_cheat_process_debug_hnd))) {
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/* ... */
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}
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/* Continue the process. */
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if (kernelAbove300()) {
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svcContinueDebugEvent(g_cheat_process_debug_hnd, 5, nullptr, 0);
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} else {
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svcLegacyContinueDebugEvent(g_cheat_process_debug_hnd, 5, 0);
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}
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}
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}
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Result DmntCheatManager::ReadCheatProcessMemoryForVm(u64 proc_addr, void *out_data, size_t size) {
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if (HasActiveCheatProcess()) {
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return svcReadDebugProcessMemory(out_data, g_cheat_process_debug_hnd, proc_addr, size);
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}
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/* TODO: Return value... */
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return 0x20F;
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}
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Result DmntCheatManager::WriteCheatProcessMemoryForVm(u64 proc_addr, const void *data, size_t size) {
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if (HasActiveCheatProcess()) {
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return svcWriteDebugProcessMemory(g_cheat_process_debug_hnd, data, proc_addr, size);
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}
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/* TODO: Return value... */
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return 0x20F;
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}
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Result DmntCheatManager::ReadCheatProcessMemory(u64 proc_addr, void *out_data, size_t size) {
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std::scoped_lock<HosMutex> lk(g_cheat_lock);
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return ReadCheatProcessMemoryForVm(proc_addr, out_data, size);
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}
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Result DmntCheatManager::WriteCheatProcessMemory(u64 proc_addr, const void *data, size_t size) {
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std::scoped_lock<HosMutex> lk(g_cheat_lock);
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return WriteCheatProcessMemoryForVm(proc_addr, data, size);
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}
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Handle DmntCheatManager::PrepareDebugNextApplication() {
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Result rc;
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Handle event_h;
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if (R_FAILED((rc = pmdmntEnableDebugForApplication(&event_h)))) {
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fatalSimple(rc);
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}
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return event_h;
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}
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static void PopulateMemoryExtents(MemoryRegionExtents *extents, Handle p_h, u64 id_base, u64 id_size) {
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Result rc;
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/* Get base extent. */
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if (R_FAILED((rc = svcGetInfo(&extents->base, id_base, p_h, 0)))) {
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fatalSimple(rc);
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}
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/* Get size extent. */
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if (R_FAILED((rc = svcGetInfo(&extents->size, id_size, p_h, 0)))) {
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fatalSimple(rc);
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}
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}
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void DmntCheatManager::OnNewApplicationLaunch() {
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std::scoped_lock<HosMutex> lk(g_cheat_lock);
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Result rc;
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/* Close the current application, if it's open. */
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CloseActiveCheatProcess();
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/* Get the new application's process ID. */
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if (R_FAILED((rc = pmdmntGetApplicationPid(&g_cheat_process_metadata.process_id)))) {
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fatalSimple(rc);
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}
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/* Get process handle, use it to learn memory extents. */
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{
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Handle proc_h = 0;
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ON_SCOPE_EXIT { if (proc_h != 0) { svcCloseHandle(proc_h); } };
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if (R_FAILED((rc = pmdmntAtmosphereGetProcessHandle(&proc_h, g_cheat_process_metadata.process_id)))) {
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fatalSimple(rc);
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}
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/* Get memory extents. */
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PopulateMemoryExtents(&g_cheat_process_metadata.heap_extents, proc_h, 4, 5);
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PopulateMemoryExtents(&g_cheat_process_metadata.alias_extents, proc_h, 2, 3);
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if (kernelAbove200()) {
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PopulateMemoryExtents(&g_cheat_process_metadata.address_space_extents, proc_h, 12, 13);
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} else {
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g_cheat_process_metadata.address_space_extents.base = 0x08000000UL;
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g_cheat_process_metadata.address_space_extents.size = 0x78000000UL;
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}
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}
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/* Get module information from Loader. */
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{
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LoaderModuleInfo proc_modules[2];
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u32 num_modules;
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if (R_FAILED((rc = ldrDmntGetModuleInfos(g_cheat_process_metadata.process_id, proc_modules, 2, &num_modules)))) {
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fatalSimple(rc);
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}
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/* All applications must have two modules. */
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/* If we only have one, we must be e.g. mitming HBL. */
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/* We don't want to fuck with HBL. */
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if (num_modules != 2) {
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g_cheat_process_metadata.process_id = 0;
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return;
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}
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g_cheat_process_metadata.main_nso_extents.base = proc_modules[1].base_address;
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g_cheat_process_metadata.main_nso_extents.size = proc_modules[1].size;
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memcpy(g_cheat_process_metadata.main_nso_build_id, proc_modules[1].build_id, sizeof(g_cheat_process_metadata.main_nso_build_id));
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}
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/* TODO: Read cheats off the SD. */
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/* Open a debug handle. */
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if (R_FAILED((rc = svcDebugActiveProcess(&g_cheat_process_debug_hnd, g_cheat_process_metadata.process_id)))) {
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fatalSimple(rc);
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}
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/* Continue debug events, etc. */
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ContinueCheatProcess();
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/* Signal to our fans. */
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g_cheat_process_event->Signal();
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}
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void DmntCheatManager::DetectThread(void *arg) {
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auto waiter = new WaitableManager(1);
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waiter->AddWaitable(LoadReadOnlySystemEvent(PrepareDebugNextApplication(), [](u64 timeout) {
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/* Process stuff for new application. */
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DmntCheatManager::OnNewApplicationLaunch();
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/* Setup detection for the next application, and close the duplicate handle. */
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svcCloseHandle(PrepareDebugNextApplication());
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return 0x0;
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}, true));
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waiter->Process();
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delete waiter;
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}
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void DmntCheatManager::VmThread(void *arg) {
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while (true) {
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/* Execute Cheat VM. */
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{
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/* Acquire lock. */
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std::scoped_lock<HosMutex> lk(g_cheat_lock);
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if (HasActiveCheatProcess()) {
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/* Handle any pending debug events. */
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ContinueCheatProcess();
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/* Execute VM. */
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if (g_cheat_vm->GetProgramSize() != 0) {
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g_cheat_vm->Execute(&g_cheat_process_metadata);
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}
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}
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}
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svcSleepThread(0x5000000ul);
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}
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}
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bool DmntCheatManager::GetHasActiveCheatProcess() {
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std::scoped_lock<HosMutex> lk(g_cheat_lock);
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return HasActiveCheatProcess();
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}
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Handle DmntCheatManager::GetCheatProcessEventHandle() {
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return g_cheat_process_event->GetHandle();
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}
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Result DmntCheatManager::GetCheatProcessMetadata(CheatProcessMetadata *out) {
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std::scoped_lock<HosMutex> lk(g_cheat_lock);
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if (HasActiveCheatProcess()) {
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*out = g_cheat_process_metadata;
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return 0;
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}
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/* TODO: Decide on a set of return values... */
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return 0x20F;
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}
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void DmntCheatManager::InitializeCheatManager() {
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/* Create cheat process detection event. */
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g_cheat_process_event = CreateWriteOnlySystemEvent();
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/* Create cheat vm. */
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g_cheat_vm = new DmntCheatVm();
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/* Spawn application detection thread, spawn cheat vm thread. */
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if (R_FAILED(g_detect_thread.Initialize(&DmntCheatManager::DetectThread, nullptr, 0x4000, 28))) {
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std::abort();
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}
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if (R_FAILED(g_vm_thread.Initialize(&DmntCheatManager::VmThread, nullptr, 0x4000, 28))) {
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std::abort();
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}
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/* Start threads. */
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if (R_FAILED(g_detect_thread.Start()) || R_FAILED(g_vm_thread.Start())) {
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std::abort();
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}
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}
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