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MaaAssistantArknights/src/MaaUpdater/main.cpp

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// MAA.Updater.exe
// Applies a pending MAA update package after the main MAA process exits.
// Invoked by MaaWpfGui's PendingUpdateApplier; do NOT run manually.
//
// Usage:
// MAA.Updater.exe <ParentProcessId> <RootDir> <ExtractDir> <BackupDir>
// <PackagePath> <SuccessStatusFile> <FailureStatusFile>
// <RelaunchExecutablePath> <PlanFile>
// [--mutex-name <name>] [--show-console] [--no-progress-ui]
//
// Plan file format (UTF-8 JSON):
// { "packageType": "full|ota", "removeList": ["rel/path", ...], "moveList": ["rel/path", ...] }
#include <windows.h>
#include <commctrl.h>
#include <dwmapi.h>
#include <shellapi.h>
#include <cstdarg>
#include <cassert>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <functional>
#include <iostream>
#include <string>
#include <vector>
struct PendingUpdatePlan;
struct UpdateProgressUi;
static bool TryConvertWideToUtf8(const std::wstring& wide, std::string& utf8);
static HANDLE GetConsoleStreamHandle(FILE* stream);
static bool IsSystemDarkModeEnabled();
static bool ShouldShowProgressUi();
static bool InitializeProgressUi();
static void DestroyProgressUi();
static void PumpProgressUiMessages();
static void RefreshProgressUiTheme();
static std::wstring BuildProgressCountText(int processedFileCount, int totalFileCount);
static void RefreshProgressUiCountText();
static void SetProgressUiTotalFileCount(int totalFileCount);
static void SetProgressUiStatus(const std::wstring& status, const std::wstring& detail);
static void AdvanceProgressUi(const std::wstring& status, const std::wstring& detail);
static void CompleteProgressUi(const std::wstring& status, const std::wstring& detail);
static void ShowProgressUiFailure(const std::wstring& failureReason);
static void WriteLog(const wchar_t* message);
static void WriteLogF(const wchar_t* fmt, ...);
static void WriteLogEntries(const std::wstring& title, const std::vector<std::wstring>& entries);
static void WriteConsoleText(FILE* stream, const std::wstring& text, bool appendNewline);
static void RotateLogIfNeeded();
static bool HasArgument(int argc, wchar_t* argv[], const wchar_t* argument);
static std::wstring EnsureTrailingSeparator(const std::wstring& path);
static std::wstring NormalizeRelativePath(const std::wstring& relativePath);
static bool EqualsIgnoreCase(const std::wstring& left, const wchar_t* right);
static bool IsDriveRootDirectory(const std::wstring& path);
static bool IsRecycleAndReplaceDirectory(const std::wstring& relativePath);
static bool TryResolvePathUnderRoot(
const std::wstring& rootPath,
const std::wstring& relativePath,
std::wstring& out);
static bool PathExistsW(const std::wstring& path);
static bool IsDirectory(const std::wstring& path);
static bool CopyDirectoryRecursive(const std::wstring& sourceDir, const std::wstring& destinationDir);
static bool MovePathToRecycleBin(const std::wstring& path);
static bool CopyPathEntry(const std::wstring& sourcePath, const std::wstring& destinationPath);
static void EnsureParentDirectory(const std::wstring& path);
static std::wstring CreateArchivedPath(const std::wstring& base);
static bool MovePathEntry(const std::wstring& src, const std::wstring& dst);
static void PrepareBackupDestination(const std::wstring& backupPath);
static bool MoveExistingPathToBackup(const std::wstring& src, const std::wstring& backup);
static bool RecycleAndBackupDirectory(const std::wstring& sourcePath, const std::wstring& backupPath);
static bool RecycleAndBackupPath(const std::wstring& sourcePath, const std::wstring& backupPath);
static bool WriteUtf8File(const std::wstring& path, const char* content);
static bool WriteUtf8File(const std::wstring& path, const std::string& content);
static std::wstring BuildFileIoFailureReason(const wchar_t* action, const std::wstring& path, DWORD errorCode);
static bool TryReadUtf8File(const std::wstring& path, std::string& content, std::wstring& failureReason);
static std::wstring Utf8ToWide(const std::string& s);
static std::string ParseJsonString(const std::string& json, size_t& pos);
static size_t SkipJsonWhitespace(const std::string& json, size_t pos);
static size_t SkipJsonValue(const std::string& json, size_t pos);
static size_t FindTopLevelJsonValueStartByKey(const std::string& json, const char* key);
static std::vector<std::wstring> ParseJsonStringArray(const std::string& json, const char* key);
static std::wstring ParseJsonStringProperty(const std::string& json, const char* key);
static bool LoadPendingUpdatePlan(
const std::wstring& planFile,
PendingUpdatePlan& outPlan,
std::wstring& failureReason,
std::string* rawJson = nullptr);
static void PrintPlanEntries(const std::wstring& title, const std::vector<std::wstring>& entries);
static int RunPlanParserTest(const std::wstring& initialPlanFile);
static HANDLE AcquireUpdateMutex(const std::wstring& mutexName);
static void ReleaseUpdateMutex(HANDLE hMutex);
// Retry and force-delete helpers
static bool RetryFileOp(const std::function<bool()>& op, int maxAttempts = 5, DWORD initialDelayMs = 200);
static std::wstring RenameLockedFile(const std::wstring& path);
static bool ForceDeleteFile(const std::wstring& path);
static bool ForceRemoveDirectoryRecursive(const std::wstring& dir);
static bool InstallFileAtomic(const std::wstring& sourcePath, const std::wstring& targetPath);
static void CleanupPendingDeleteFiles(const std::wstring& rootDir);
struct UpdateProgressUi
{
bool enabled = false;
HWND window = nullptr;
HWND statusLabel = nullptr;
HWND detailLabel = nullptr;
HWND countLabel = nullptr;
HWND progressBar = nullptr;
int processedFileCount = 0;
int totalFileCount = 0;
};
struct ProgressUiTheme
{
bool isDarkMode = false;
COLORREF backgroundColor = RGB(255, 255, 255);
COLORREF primaryTextColor = RGB(32, 32, 32);
COLORREF secondaryTextColor = RGB(96, 96, 96);
COLORREF progressTrackColor = RGB(232, 234, 237);
COLORREF progressBarColor = RGB(0, 120, 212);
HBRUSH backgroundBrush = nullptr;
};
// ---------------------------------------------------------------------------
// Logging
// ---------------------------------------------------------------------------
static std::wstring g_logFile;
static bool g_writeConsoleLog = false;
// 用户可通过 --no-progress-ui 显式关闭更新进度窗口
static bool g_suppressProgressUi = false;
static UpdateProgressUi g_progressUi;
static ProgressUiTheme g_progressUiTheme;
static constexpr wchar_t PROGRESS_WINDOW_CLASS_NAME[] = L"MaaUpdaterProgressWindow";
static constexpr int PROGRESS_WINDOW_WIDTH = 540;
static constexpr int PROGRESS_WINDOW_HEIGHT = 190;
static constexpr int PROGRESS_STATUS_CONTROL_ID = 1001;
static constexpr int PROGRESS_DETAIL_CONTROL_ID = 1002;
static constexpr int PROGRESS_COUNT_CONTROL_ID = 1003;
static constexpr int PROGRESS_BAR_CONTROL_ID = 1004;
static constexpr DWORD LEGACY_DWMWA_USE_IMMERSIVE_DARK_MODE = 19;
static constexpr wchar_t MUTEX_NAME_ARG[] = L"--mutex-name";
static constexpr DWORD UPDATE_MUTEX_TIMEOUT_MS = 3000;
#define PENDING_DELETE_SUFFIX L".pendingdelete"
static constexpr int FILE_OP_MAX_RETRIES = 5;
static constexpr DWORD FILE_OP_INITIAL_DELAY_MS = 200;
#ifndef DWMWA_USE_IMMERSIVE_DARK_MODE
#define DWMWA_USE_IMMERSIVE_DARK_MODE 20
#endif
static bool TryConvertWideToUtf8(const std::wstring& wide, std::string& utf8)
{
int utf8Len = WideCharToMultiByte(
CP_UTF8,
0,
wide.c_str(),
static_cast<int>(wide.size()),
nullptr,
0,
nullptr,
nullptr);
if (utf8Len <= 0) {
utf8.clear();
return false;
}
utf8.assign(static_cast<size_t>(utf8Len), '\0');
return WideCharToMultiByte(
CP_UTF8,
0,
wide.c_str(),
static_cast<int>(wide.size()),
utf8.data(),
utf8Len,
nullptr,
nullptr) == utf8Len;
}
static HANDLE GetConsoleStreamHandle(FILE* stream)
{
DWORD stdHandle = stream == stderr
? STD_ERROR_HANDLE
: stream == stdout
? STD_OUTPUT_HANDLE
: static_cast<DWORD>(-1);
if (stdHandle == static_cast<DWORD>(-1)) {
return nullptr;
}
HANDLE handle = GetStdHandle(stdHandle);
return handle == INVALID_HANDLE_VALUE ? nullptr : handle;
}
static bool IsSystemDarkModeEnabled()
{
DWORD value = 1;
DWORD valueSize = sizeof(value);
LSTATUS status = RegGetValueW(
HKEY_CURRENT_USER,
L"Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize",
L"AppsUseLightTheme",
RRF_RT_REG_DWORD,
nullptr,
&value,
&valueSize);
return status == ERROR_SUCCESS && value == 0;
}
static void RefreshProgressUiTheme()
{
g_progressUiTheme.isDarkMode = IsSystemDarkModeEnabled();
if (g_progressUiTheme.isDarkMode) {
g_progressUiTheme.backgroundColor = RGB(32, 32, 32);
g_progressUiTheme.primaryTextColor = RGB(241, 241, 241);
g_progressUiTheme.secondaryTextColor = RGB(200, 200, 200);
g_progressUiTheme.progressTrackColor = RGB(58, 58, 58);
g_progressUiTheme.progressBarColor = RGB(76, 194, 255);
} else {
g_progressUiTheme.backgroundColor = RGB(255, 255, 255);
g_progressUiTheme.primaryTextColor = RGB(32, 32, 32);
g_progressUiTheme.secondaryTextColor = RGB(96, 96, 96);
g_progressUiTheme.progressTrackColor = RGB(232, 234, 237);
g_progressUiTheme.progressBarColor = RGB(0, 120, 212);
}
if (g_progressUiTheme.backgroundBrush != nullptr) {
DeleteObject(g_progressUiTheme.backgroundBrush);
g_progressUiTheme.backgroundBrush = nullptr;
}
g_progressUiTheme.backgroundBrush = CreateSolidBrush(g_progressUiTheme.backgroundColor);
if (!g_progressUi.enabled || g_progressUi.window == nullptr) {
return;
}
BOOL useDarkMode = g_progressUiTheme.isDarkMode ? TRUE : FALSE;
DwmSetWindowAttribute(
g_progressUi.window,
DWMWA_USE_IMMERSIVE_DARK_MODE,
&useDarkMode,
sizeof(useDarkMode));
DwmSetWindowAttribute(
g_progressUi.window,
LEGACY_DWMWA_USE_IMMERSIVE_DARK_MODE,
&useDarkMode,
sizeof(useDarkMode));
if (g_progressUi.progressBar != nullptr) {
SendMessageW(g_progressUi.progressBar, PBM_SETBKCOLOR, 0, g_progressUiTheme.progressTrackColor);
SendMessageW(g_progressUi.progressBar, PBM_SETBARCOLOR, 0, g_progressUiTheme.progressBarColor);
}
RedrawWindow(
g_progressUi.window,
nullptr,
nullptr,
RDW_ERASE | RDW_INVALIDATE | RDW_ALLCHILDREN | RDW_UPDATENOW);
}
static LRESULT CALLBACK UpdateProgressWindowProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message) {
case WM_SETTINGCHANGE:
case WM_THEMECHANGED:
RefreshProgressUiTheme();
return 0;
case WM_ERASEBKGND: {
HDC dc = reinterpret_cast<HDC>(wParam);
RECT clientRect {};
GetClientRect(hwnd, &clientRect);
FillRect(
dc,
&clientRect,
g_progressUiTheme.backgroundBrush != nullptr
? g_progressUiTheme.backgroundBrush
: reinterpret_cast<HBRUSH>(GetStockObject(WHITE_BRUSH)));
return 1;
}
case WM_CTLCOLORSTATIC: {
HDC dc = reinterpret_cast<HDC>(wParam);
HWND control = reinterpret_cast<HWND>(lParam);
COLORREF textColor = control == g_progressUi.detailLabel
? g_progressUiTheme.secondaryTextColor
: g_progressUiTheme.primaryTextColor;
SetTextColor(dc, textColor);
SetBkColor(dc, g_progressUiTheme.backgroundColor);
SetBkMode(dc, TRANSPARENT);
return reinterpret_cast<INT_PTR>(
g_progressUiTheme.backgroundBrush != nullptr
? g_progressUiTheme.backgroundBrush
: reinterpret_cast<HBRUSH>(GetStockObject(WHITE_BRUSH)));
}
case WM_CLOSE:
return 0;
case WM_DESTROY:
return 0;
default:
return DefWindowProcW(hwnd, message, wParam, lParam);
}
}
static void ApplyDefaultWindowFont(HWND hwnd)
{
HFONT font = static_cast<HFONT>(GetStockObject(DEFAULT_GUI_FONT));
if (font != nullptr) {
SendMessageW(hwnd, WM_SETFONT, reinterpret_cast<WPARAM>(font), TRUE);
}
}
static bool EnsureProgressWindowClassRegistered()
{
static bool isRegistered = false;
if (isRegistered) {
return true;
}
WNDCLASSEXW windowClass {};
windowClass.cbSize = sizeof(windowClass);
windowClass.lpfnWndProc = UpdateProgressWindowProc;
windowClass.hInstance = GetModuleHandleW(nullptr);
windowClass.hCursor = LoadCursorW(nullptr, IDC_ARROW);
windowClass.hbrBackground = nullptr;
windowClass.lpszClassName = PROGRESS_WINDOW_CLASS_NAME;
if (RegisterClassExW(&windowClass) == 0) {
return GetLastError() == ERROR_CLASS_ALREADY_EXISTS;
}
isRegistered = true;
return true;
}
static bool ShouldShowProgressUi()
{
// 控制台输出和进度窗口是两个独立选项，可同时显示；用户可通过 --no-progress-ui 显式关闭进度窗口
return !g_suppressProgressUi;
}
static void PumpProgressUiMessages()
{
if (!g_progressUi.enabled || g_progressUi.window == nullptr) {
return;
}
MSG message {};
while (PeekMessageW(&message, nullptr, 0, 0, PM_REMOVE)) {
TranslateMessage(&message);
DispatchMessageW(&message);
}
}
static bool InitializeProgressUi()
{
if (!ShouldShowProgressUi()) {
return false;
}
if (!EnsureProgressWindowClassRegistered()) {
return false;
}
RefreshProgressUiTheme();
INITCOMMONCONTROLSEX controls {};
controls.dwSize = sizeof(controls);
controls.dwICC = ICC_PROGRESS_CLASS;
InitCommonControlsEx(&controls);
int originX = (GetSystemMetrics(SM_CXSCREEN) - PROGRESS_WINDOW_WIDTH) / 2;
int originY = (GetSystemMetrics(SM_CYSCREEN) - PROGRESS_WINDOW_HEIGHT) / 2;
HWND window = CreateWindowExW(
WS_EX_TOPMOST | WS_EX_APPWINDOW | WS_EX_DLGMODALFRAME,
PROGRESS_WINDOW_CLASS_NAME,
L"MAA 正在更新 | MAA Updating",
WS_CAPTION,
originX,
originY,
PROGRESS_WINDOW_WIDTH,
PROGRESS_WINDOW_HEIGHT,
nullptr,
nullptr,
GetModuleHandleW(nullptr),
nullptr);
if (window == nullptr) {
return false;
}
HWND statusLabel = CreateWindowExW(
0,
L"STATIC",
L"正在准备更新... | Preparing update...",
WS_CHILD | WS_VISIBLE,
20,
18,
PROGRESS_WINDOW_WIDTH - 40,
24,
window,
reinterpret_cast<HMENU>(static_cast<INT_PTR>(PROGRESS_STATUS_CONTROL_ID)),
GetModuleHandleW(nullptr),
nullptr);
HWND detailLabel = CreateWindowExW(
0,
L"STATIC",
L"请稍候... | Please wait...",
WS_CHILD | WS_VISIBLE,
20,
48,
PROGRESS_WINDOW_WIDTH - 40,
42,
window,
reinterpret_cast<HMENU>(static_cast<INT_PTR>(PROGRESS_DETAIL_CONTROL_ID)),
GetModuleHandleW(nullptr),
nullptr);
HWND countLabel = CreateWindowExW(
0,
L"STATIC",
L"已处理文件 0/0 | Files processed 0/0",
WS_CHILD | WS_VISIBLE,
20,
96,
PROGRESS_WINDOW_WIDTH - 40,
20,
window,
reinterpret_cast<HMENU>(static_cast<INT_PTR>(PROGRESS_COUNT_CONTROL_ID)),
GetModuleHandleW(nullptr),
nullptr);
HWND progressBar = CreateWindowExW(
0,
PROGRESS_CLASSW,
nullptr,
WS_CHILD | WS_VISIBLE | PBS_SMOOTH,
20,
124,
PROGRESS_WINDOW_WIDTH - 40,
20,
window,
reinterpret_cast<HMENU>(static_cast<INT_PTR>(PROGRESS_BAR_CONTROL_ID)),
GetModuleHandleW(nullptr),
nullptr);
if (statusLabel == nullptr || detailLabel == nullptr || countLabel == nullptr || progressBar == nullptr) {
DestroyWindow(window);
return false;
}
ApplyDefaultWindowFont(statusLabel);
ApplyDefaultWindowFont(detailLabel);
ApplyDefaultWindowFont(countLabel);
SendMessageW(progressBar, PBM_SETRANGE32, 0, 1);
SendMessageW(progressBar, PBM_SETPOS, 0, 0);
g_progressUi.enabled = true;
g_progressUi.window = window;
g_progressUi.statusLabel = statusLabel;
g_progressUi.detailLabel = detailLabel;
g_progressUi.countLabel = countLabel;
g_progressUi.progressBar = progressBar;
g_progressUi.processedFileCount = 0;
g_progressUi.totalFileCount = 0;
RefreshProgressUiTheme();
RefreshProgressUiCountText();
ShowWindow(window, SW_SHOWNORMAL);
UpdateWindow(window);
PumpProgressUiMessages();
return true;
}
static void DestroyProgressUi()
{
if (g_progressUi.window != nullptr) {
DestroyWindow(g_progressUi.window);
}
g_progressUi = {};
if (g_progressUiTheme.backgroundBrush != nullptr) {
DeleteObject(g_progressUiTheme.backgroundBrush);
g_progressUiTheme.backgroundBrush = nullptr;
}
}
static std::wstring BuildProgressCountText(int processedFileCount, int totalFileCount)
{
return L"已处理文件 " + std::to_wstring(processedFileCount) + L"/" + std::to_wstring(totalFileCount) +
L" | Files processed " + std::to_wstring(processedFileCount) + L"/" + std::to_wstring(totalFileCount);
}
static void RefreshProgressUiCountText()
{
if (!g_progressUi.enabled || g_progressUi.countLabel == nullptr) {
return;
}
std::wstring countText = BuildProgressCountText(g_progressUi.processedFileCount, g_progressUi.totalFileCount);
SetWindowTextW(g_progressUi.countLabel, countText.c_str());
}
static void SetProgressUiTotalFileCount(int totalFileCount)
{
if (!g_progressUi.enabled || g_progressUi.progressBar == nullptr) {
return;
}
g_progressUi.totalFileCount = totalFileCount > 0 ? totalFileCount : 0;
if (g_progressUi.processedFileCount > g_progressUi.totalFileCount) {
g_progressUi.processedFileCount = g_progressUi.totalFileCount;
}
int progressBarMaximum = g_progressUi.totalFileCount > 0 ? g_progressUi.totalFileCount : 1;
SendMessageW(g_progressUi.progressBar, PBM_SETRANGE32, 0, progressBarMaximum);
SendMessageW(g_progressUi.progressBar, PBM_SETPOS, g_progressUi.processedFileCount, 0);
RefreshProgressUiCountText();
PumpProgressUiMessages();
}
static void SetProgressUiStatus(const std::wstring& status, const std::wstring& detail)
{
if (!g_progressUi.enabled) {
return;
}
if (g_progressUi.statusLabel != nullptr) {
SetWindowTextW(g_progressUi.statusLabel, status.c_str());
}
if (g_progressUi.detailLabel != nullptr) {
SetWindowTextW(g_progressUi.detailLabel, detail.c_str());
}
RefreshProgressUiCountText();
PumpProgressUiMessages();
}
static void AdvanceProgressUi(const std::wstring& status, const std::wstring& detail)
{
if (!g_progressUi.enabled) {
return;
}
if (g_progressUi.processedFileCount < g_progressUi.totalFileCount) {
++g_progressUi.processedFileCount;
}
SetProgressUiStatus(status, detail);
if (g_progressUi.progressBar != nullptr) {
SendMessageW(g_progressUi.progressBar, PBM_SETPOS, g_progressUi.processedFileCount, 0);
}
PumpProgressUiMessages();
}
static void CompleteProgressUi(const std::wstring& status, const std::wstring& detail)
{
if (!g_progressUi.enabled) {
return;
}
g_progressUi.processedFileCount = g_progressUi.totalFileCount;
SetProgressUiStatus(status, detail);
if (g_progressUi.progressBar != nullptr) {
int progressBarPosition = g_progressUi.totalFileCount > 0 ? g_progressUi.processedFileCount : 1;
SendMessageW(g_progressUi.progressBar, PBM_SETPOS, progressBarPosition, 0);
}
PumpProgressUiMessages();
}
static void ShowProgressUiFailure(const std::wstring& failureReason)
{
if (!g_progressUi.enabled) {
return;
}
SetProgressUiStatus(L"更新失败 | Update failed", failureReason);
MessageBoxW(
g_progressUi.window,
failureReason.c_str(),
L"MAA 更新失败 | MAA Update Failed",
MB_OK | MB_ICONERROR);
}
static void WriteLog(const wchar_t* message)
{
SYSTEMTIME st {};
GetLocalTime(&st);
wchar_t buf[64];
_snwprintf_s(buf, _countof(buf), _TRUNCATE,
L"[%04d-%02d-%02d %02d:%02d:%02d.%03d] ",
st.wYear, st.wMonth, st.wDay,
st.wHour, st.wMinute, st.wSecond, st.wMilliseconds);
std::wstring timestampedLine = buf;
timestampedLine += message;
if (g_writeConsoleLog) {
WriteConsoleText(stdout, timestampedLine, true);
}
if (g_logFile.empty()) return;
std::wstring line = timestampedLine;
line += L"\r\n";
// Ensure parent directory exists
size_t sep = g_logFile.rfind(L'\\');
if (sep != std::wstring::npos) {
std::wstring dir = g_logFile.substr(0, sep);
CreateDirectoryW(dir.c_str(), nullptr);
}
HANDLE hFile = CreateFileW(
g_logFile.c_str(),
FILE_APPEND_DATA, FILE_SHARE_READ,
nullptr, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr);
if (hFile == INVALID_HANDLE_VALUE) return;
// Write UTF-8
std::string utf8;
if (TryConvertWideToUtf8(line, utf8)) {
DWORD written = 0;
WriteFile(hFile, utf8.data(), static_cast<DWORD>(utf8.size()), &written, nullptr);
}
CloseHandle(hFile);
}
static void WriteLogF(const wchar_t* fmt, ...)
{
wchar_t buf[2048];
va_list args;
va_start(args, fmt);
_vsnwprintf_s(buf, _countof(buf), _TRUNCATE, fmt, args);
va_end(args);
WriteLog(buf);
}
static void WriteLogEntries(const std::wstring& title, const std::vector<std::wstring>& entries)
{
WriteLogF(L"%s (%zu)", title.c_str(), entries.size());
for (const std::wstring& entry : entries) {
std::wstring line = L" - " + entry;
WriteLog(line.c_str());
}
}
static void WriteConsoleText(FILE* stream, const std::wstring& text, bool appendNewline)
{
std::wstring outputText = text;
if (appendNewline) {
outputText += L"\n";
}
HANDLE consoleHandle = GetConsoleStreamHandle(stream);
DWORD consoleMode = 0;
if (consoleHandle != nullptr && GetConsoleMode(consoleHandle, &consoleMode)) {
DWORD written = 0;
WriteConsoleW(
consoleHandle,
outputText.c_str(),
static_cast<DWORD>(outputText.size()),
&written,
nullptr);
return;
}
std::string utf8;
if (TryConvertWideToUtf8(outputText, utf8)) {
fwrite(utf8.data(), 1, utf8.size(), stream);
}
fflush(stream);
}
static constexpr LONGLONG MAX_UPDATER_LOG_SIZE = 4LL * 1024 * 1024;
static void RotateLogIfNeeded()
{
if (g_logFile.empty() || !PathExistsW(g_logFile)) {
return;
}
HANDLE hFile = CreateFileW(
g_logFile.c_str(),
GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
nullptr,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
nullptr);
if (hFile == INVALID_HANDLE_VALUE) {
return;
}
LARGE_INTEGER size {};
bool shouldRotate = GetFileSizeEx(hFile, &size) && size.QuadPart > MAX_UPDATER_LOG_SIZE;
CloseHandle(hFile);
if (!shouldRotate) {
return;
}
std::wstring bakFile = g_logFile + L".bak";
DeleteFileW(bakFile.c_str());
MoveFileExW(g_logFile.c_str(), bakFile.c_str(), MOVEFILE_REPLACE_EXISTING);
}
static bool HasArgument(int argc, wchar_t* argv[], const wchar_t* argument)
{
for (int index = 1; index < argc; ++index) {
if (_wcsicmp(argv[index], argument) == 0) {
return true;
}
}
return false;
}
// ---------------------------------------------------------------------------
// Path utilities
// ---------------------------------------------------------------------------
static std::wstring EnsureTrailingSeparator(const std::wstring& path)
{
if (!path.empty() && path.back() != L'\\')
return path + L'\\';
return path;
}
static std::wstring NormalizeRelativePath(const std::wstring& relativePath)
{
std::wstring normalized = relativePath;
for (wchar_t& c : normalized) {
if (c == L'/') {
c = L'\\';
}
}
while (!normalized.empty() && (normalized.back() == L'\\' || normalized.back() == L' ' || normalized.back() == L'\t')) {
normalized.pop_back();
}
return normalized;
}
static bool EqualsIgnoreCase(const std::wstring& left, const wchar_t* right)
{
return _wcsicmp(left.c_str(), right) == 0;
}
static bool IsDriveRootDirectory(const std::wstring& path)
{
if (path.empty()) {
return false;
}
wchar_t full[MAX_PATH * 4];
DWORD len = GetFullPathNameW(path.c_str(), _countof(full), full, nullptr);
if (len == 0 || len >= _countof(full)) {
return false;
}
std::wstring normalized = full;
while (!normalized.empty() && (normalized.back() == L'\\' || normalized.back() == L'/')) {
normalized.pop_back();
}
if (normalized.size() < 2) {
return false;
}
wchar_t drive = normalized[0];
bool hasDriveLetter = (drive >= L'A' && drive <= L'Z') || (drive >= L'a' && drive <= L'z');
return hasDriveLetter && normalized.size() == 2 && normalized[1] == L':';
}
static bool IsRecycleAndReplaceDirectory(const std::wstring& relativePath)
{
std::wstring normalized = NormalizeRelativePath(relativePath);
return EqualsIgnoreCase(normalized, L"resource") || EqualsIgnoreCase(normalized, L"externals");
}
// Resolves `relativePath` under `rootPath`, writes result to `out`.
// Returns false if the path is rooted, empty, or escapes the root.
static bool TryResolvePathUnderRoot(
const std::wstring& rootPath,
const std::wstring& relativePath,
std::wstring& out)
{
out.clear();
// Reject empty or whitespace
if (relativePath.empty()) return false;
bool allSpace = true;
for (wchar_t c : relativePath)
if (c != L' ' && c != L'\t') { allSpace = false; break; }
if (allSpace) return false;
// Normalise slashes
std::wstring rel = relativePath;
for (wchar_t& c : rel)
if (c == L'/') c = L'\\';
// Reject absolute paths
if (rel.size() >= 2 && rel[1] == L':') return false;
if (!rel.empty() && rel[0] == L'\\') return false;
// Build candidate and canonicalise
std::wstring combined = rootPath + L'\\' + rel;
wchar_t full[MAX_PATH * 4];
DWORD len = GetFullPathNameW(combined.c_str(), _countof(full), full, nullptr);
if (len == 0 || len >= _countof(full)) return false;
std::wstring candidate = full;
// Root must be canonical too
DWORD rootLen = GetFullPathNameW(rootPath.c_str(), _countof(full), full, nullptr);
if (rootLen == 0 || rootLen >= _countof(full)) return false;
std::wstring normalRoot = EnsureTrailingSeparator(std::wstring(full));
// Case-insensitive prefix check
if (candidate.size() < normalRoot.size()) return false;
if (_wcsnicmp(candidate.c_str(), normalRoot.c_str(), normalRoot.size()) != 0) return false;
out = candidate;
return true;
}
// ---------------------------------------------------------------------------
// File / directory helpers
// ---------------------------------------------------------------------------
static bool PathExistsW(const std::wstring& path)
{
return GetFileAttributesW(path.c_str()) != INVALID_FILE_ATTRIBUTES;
}
static bool IsDirectory(const std::wstring& path)
{
DWORD attr = GetFileAttributesW(path.c_str());
return attr != INVALID_FILE_ATTRIBUTES && (attr & FILE_ATTRIBUTE_DIRECTORY);
}
static bool CopyDirectoryRecursive(const std::wstring& sourceDir, const std::wstring& destinationDir)
{
DWORD attr = GetFileAttributesW(sourceDir.c_str());
if (attr == INVALID_FILE_ATTRIBUTES || !(attr & FILE_ATTRIBUTE_DIRECTORY)) {
return false;
}
CreateDirectoryW(destinationDir.c_str(), nullptr);
std::wstring pattern = sourceDir + L"\\*";
WIN32_FIND_DATAW fd {};
HANDLE hFind = FindFirstFileW(pattern.c_str(), &fd);
if (hFind == INVALID_HANDLE_VALUE) {
return true;
}
do {
if (wcscmp(fd.cFileName, L".") == 0 || wcscmp(fd.cFileName, L"..") == 0) {
continue;
}
std::wstring sourceChild = sourceDir + L"\\" + fd.cFileName;
std::wstring destinationChild = destinationDir + L"\\" + fd.cFileName;
if (fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
if (!CopyDirectoryRecursive(sourceChild, destinationChild)) {
FindClose(hFind);
return false;
}
continue;
}
EnsureParentDirectory(destinationChild);
if (!CopyFileW(sourceChild.c_str(), destinationChild.c_str(), FALSE)) {
FindClose(hFind);
return false;
}
} while (FindNextFileW(hFind, &fd));
FindClose(hFind);
return true;
}
static bool MovePathToRecycleBin(const std::wstring& path)
{
std::wstring doubleNullPath = path;
doubleNullPath.push_back(L'\0');
SHFILEOPSTRUCTW op {};
op.wFunc = FO_DELETE;
op.pFrom = doubleNullPath.c_str();
op.fFlags = FOF_ALLOWUNDO | FOF_NOCONFIRMATION | FOF_NOERRORUI | FOF_SILENT;
int result = SHFileOperationW(&op);
return result == 0 && !op.fAnyOperationsAborted;
}
static bool CopyPathEntry(const std::wstring& sourcePath, const std::wstring& destinationPath)
{
DWORD attr = GetFileAttributesW(sourcePath.c_str());
if (attr == INVALID_FILE_ATTRIBUTES) {
return false;
}
if (attr & FILE_ATTRIBUTE_DIRECTORY) {
return CopyDirectoryRecursive(sourcePath, destinationPath);
}
EnsureParentDirectory(destinationPath);
return CopyFileW(sourcePath.c_str(), destinationPath.c_str(), FALSE) != FALSE;
}
static void EnsureParentDirectory(const std::wstring& path)
{
size_t sep = path.rfind(L'\\');
if (sep == std::wstring::npos) return;
std::wstring parent = path.substr(0, sep);
if (parent.empty()) return;
// Recursively create
EnsureParentDirectory(parent);
CreateDirectoryW(parent.c_str(), nullptr);
}
static std::wstring CreateArchivedPath(const std::wstring& base)
{
SYSTEMTIME st {};
GetLocalTime(&st);
wchar_t ts[32];
_snwprintf_s(ts, _countof(ts), _TRUNCATE,
L".%04d%02d%02d%02d%02d%02d.",
st.wYear, st.wMonth, st.wDay,
st.wHour, st.wMinute, st.wSecond);
int index = 0;
while (true) {
wchar_t idx[16];
_itow_s(index, idx, _countof(idx), 10);
std::wstring candidate = base + ts + idx;
if (!PathExistsW(candidate)) return candidate;
index++;
}
}
// Move a file or directory entry (handles cross-volume by CopyFile+Delete for files).
// Uses retry and rename fallback for locked files.
static bool MovePathEntry(const std::wstring& src, const std::wstring& dst)
{
EnsureParentDirectory(dst);
DWORD attr = GetFileAttributesW(src.c_str());
if (attr == INVALID_FILE_ATTRIBUTES) return false;
if (attr & FILE_ATTRIBUTE_DIRECTORY) {
auto moveOp = [&]() -> bool {
return MoveFileExW(src.c_str(), dst.c_str(), 0) != FALSE;
};
return RetryFileOp(moveOp, FILE_OP_MAX_RETRIES, FILE_OP_INITIAL_DELAY_MS);
}
// For files: try atomic move first; fall back to copy+delete
{
auto moveOp = [&]() -> bool {
return MoveFileExW(src.c_str(), dst.c_str(), MOVEFILE_REPLACE_EXISTING) != FALSE;
};
if (RetryFileOp(moveOp, FILE_OP_MAX_RETRIES, FILE_OP_INITIAL_DELAY_MS)) {
return true;
}
}
// Move failed (likely the source file is locked). Try copy+force-delete.
WriteLogF(L"MovePathEntry: move failed, falling back to copy+delete for: %ls", src.c_str());
{
auto copyOp = [&]() -> bool {
return CopyFileW(src.c_str(), dst.c_str(), FALSE) != FALSE;
};
if (RetryFileOp(copyOp, 3, 500)) {
// Copy succeeded; force-delete the source
ForceDeleteFile(src);
return true;
}
}
// Copy also failed. As a last resort, try to rename the source out of the way
// and then do a fresh copy to the destination.
WriteLogF(L"MovePathEntry: copy+delete failed, trying rename-and-copy for: %ls", src.c_str());
{
std::wstring renamed = RenameLockedFile(src);
if (!renamed.empty()) {
// The original path is now free; copy the renamed file to destination
auto copyOp = [&]() -> bool {
return CopyFileW(renamed.c_str(), dst.c_str(), FALSE) != FALSE;
};
if (RetryFileOp(copyOp, 3, 500)) {
WriteLogF(L"MovePathEntry: rename-and-copy succeeded: %ls", src.c_str());
return true;
}
}
}
WriteLogF(L"MovePathEntry: all strategies failed for src=%ls, dst=%ls", src.c_str(), dst.c_str());
return false;
}
static void PrepareBackupDestination(const std::wstring& backupPath)
{
EnsureParentDirectory(backupPath);
if (!PathExistsW(backupPath)) return;
std::wstring archived = CreateArchivedPath(backupPath);
MovePathEntry(backupPath, archived);
}
static bool MoveExistingPathToBackup(const std::wstring& src, const std::wstring& backup)
{
PrepareBackupDestination(backup);
// First try: normal move with retry
if (MovePathEntry(src, backup)) {
return true;
}
// Second try: copy to backup, then force-delete the source
WriteLogF(L"MoveExistingPathToBackup: move failed, trying copy+delete for: %ls", src.c_str());
{
auto copyOp = [&]() -> bool {
return CopyPathEntry(src, backup) != FALSE;
};
if (RetryFileOp(copyOp, 3, 500)) {
// Copy succeeded; now remove the source
ForceDeleteFile(src);
return true;
}
}
WriteLogF(L"MoveExistingPathToBackup: all strategies failed for: %ls", src.c_str());
return false;
}
static bool RecycleAndBackupDirectory(const std::wstring& sourcePath, const std::wstring& backupPath)
{
PrepareBackupDestination(backupPath);
{
auto copyOp = [&]() -> bool {
return CopyDirectoryRecursive(sourcePath, backupPath) != FALSE;
};
if (!RetryFileOp(copyOp, 3, 500)) {
return false;
}
}
// Try recycle bin first, fall back to force-delete
if (MovePathToRecycleBin(sourcePath)) {
return true;
}
return ForceRemoveDirectoryRecursive(sourcePath);
}
static bool RecycleAndBackupPath(const std::wstring& sourcePath, const std::wstring& backupPath)
{
PrepareBackupDestination(backupPath);
{
auto copyOp = [&]() -> bool {
return CopyPathEntry(sourcePath, backupPath) != FALSE;
};
if (!RetryFileOp(copyOp, 3, 500)) {
return false;
}
}
// Try recycle bin first, fall back to force-delete
if (MovePathToRecycleBin(sourcePath)) {
return true;
}
return ForceDeleteFile(sourcePath);
}
// ---------------------------------------------------------------------------
// Write a small UTF-8 text file
// ---------------------------------------------------------------------------
static bool WriteUtf8File(const std::wstring& path, const char* content)
{
return WriteUtf8File(path, std::string(content));
}
static bool WriteUtf8File(const std::wstring& path, const std::string& content)
{
EnsureParentDirectory(path);
HANDLE hFile = CreateFileW(
path.c_str(),
GENERIC_WRITE, 0,
nullptr, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr);
if (hFile == INVALID_HANDLE_VALUE) return false;
DWORD written = 0;
DWORD len = static_cast<DWORD>(content.size());
bool ok = WriteFile(hFile, content.data(), len, &written, nullptr) != FALSE;
CloseHandle(hFile);
return ok && written == len;
}
// ---------------------------------------------------------------------------
// Minimal JSON parser for the plan file
// { "packageType": "full|ota", "removeList": [ "...", ... ], "moveList": [ "...", ... ] }
// ---------------------------------------------------------------------------
static std::wstring BuildFileIoFailureReason(const wchar_t* action, const std::wstring& path, DWORD errorCode)
{
return std::wstring(action) + L": " + path + L" (error=" + std::to_wstring(errorCode) + L")";
}
static bool TryReadUtf8File(const std::wstring& path, std::string& content, std::wstring& failureReason)
{
content.clear();
failureReason.clear();
HANDLE hFile = CreateFileW(
path.c_str(),
GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr);
if (hFile == INVALID_HANDLE_VALUE) {
failureReason = BuildFileIoFailureReason(L"Failed to open file", path, GetLastError());
return false;
}
std::string buf;
char chunk[4096];
while (true) {
DWORD chunkRead = 0;
if (!ReadFile(hFile, chunk, static_cast<DWORD>(sizeof(chunk)), &chunkRead, nullptr)) {
failureReason = BuildFileIoFailureReason(L"Failed to read file", path, GetLastError());
CloseHandle(hFile);
return false;
}
if (chunkRead == 0) {
break;
}
buf.append(chunk, chunkRead);
}
CloseHandle(hFile);
content.swap(buf);
return true;
}
// Convert a UTF-8 JSON string value to std::wstring.
// Handles basic \uXXXX, \n, \r, \t, \\, \/
static std::wstring Utf8ToWide(const std::string& s)
{
if (s.empty()) return {};
int len = MultiByteToWideChar(CP_UTF8, 0, s.c_str(), -1, nullptr, 0);
if (len <= 1) return {};
std::wstring out(len - 1, L'\0');
MultiByteToWideChar(CP_UTF8, 0, s.c_str(), -1, out.data(), len);
return out;
}
// Parse a JSON string literal starting at pos (after the opening quote).
// Advances pos past the closing quote. Returns the raw UTF-8 content.
static std::string ParseJsonString(const std::string& json, size_t& pos)
{
std::string result;
while (pos < json.size()) {
char c = json[pos++];
if (c == '"') break;
if (c == '\\' && pos < json.size()) {
char esc = json[pos++];
switch (esc) {
case '"': result += '"'; break;
case '\\': result += '\\'; break;
case '/': result += '/'; break;
case 'n': result += '\n'; break;
case 'r': result += '\r'; break;
case 't': result += '\t'; break;
case 'u': {
if (pos + 4 <= json.size()) {
char hex[5] = {};
memcpy(hex, json.c_str() + pos, 4);
pos += 4;
unsigned cp = static_cast<unsigned>(strtoul(hex, nullptr, 16));
// Encode code point as UTF-8
if (cp < 0x80) {
result += static_cast<char>(cp);
} else if (cp < 0x800) {
result += static_cast<char>(0xC0 | (cp >> 6));
result += static_cast<char>(0x80 | (cp & 0x3F));
} else {
result += static_cast<char>(0xE0 | (cp >> 12));
result += static_cast<char>(0x80 | ((cp >> 6) & 0x3F));
result += static_cast<char>(0x80 | (cp & 0x3F));
}
}
break;
}
default: result += esc; break;
}
} else {
result += c;
}
}
return result;
}
static size_t SkipJsonWhitespace(const std::string& json, size_t pos)
{
while (pos < json.size() && (json[pos] == ' ' || json[pos] == '\t' ||
json[pos] == '\r' || json[pos] == '\n'))
{
++pos;
}
return pos;
}
// Skips one JSON value starting at `pos` and returns the position right after it.
static size_t SkipJsonValue(const std::string& json, size_t pos)
{
pos = SkipJsonWhitespace(json, pos);
if (pos >= json.size()) return pos;
char c = json[pos];
if (c == '"') {
++pos;
ParseJsonString(json, pos);
return pos;
}
if (c == '{' || c == '[') {
char open = c;
char close = (c == '{') ? '}' : ']';
int depth = 0;
bool inString = false;
bool escaped = false;
for (; pos < json.size(); ++pos) {
char ch = json[pos];
if (inString) {
if (escaped) {
escaped = false;
} else if (ch == '\\') {
escaped = true;
} else if (ch == '"') {
inString = false;
}
continue;
}
if (ch == '"') {
inString = true;
continue;
}
if (ch == open) {
++depth;
} else if (ch == close) {
--depth;
if (depth == 0) {
++pos;
break;
}
}
}
return pos;
}
// number / true / false / null
while (pos < json.size()) {
char ch = json[pos];
if (ch == ',' || ch == '}' || ch == ']' || ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n') {
break;
}
++pos;
}
return pos;
}
// Finds `"key": <value>` in the top-level JSON object and returns the start of `<value>`.
static size_t FindTopLevelJsonValueStartByKey(const std::string& json, const char* key)
{
size_t pos = SkipJsonWhitespace(json, 0);
if (pos >= json.size() || json[pos] != '{') return std::string::npos;
++pos;
while (pos < json.size()) {
pos = SkipJsonWhitespace(json, pos);
if (pos >= json.size()) return std::string::npos;
if (json[pos] == ',') {
++pos;
continue;
}
if (json[pos] == '}') {
return std::string::npos;
}
if (json[pos] != '"') {
++pos;
continue;
}
++pos;
std::string currentKey = ParseJsonString(json, pos);
pos = SkipJsonWhitespace(json, pos);
if (pos >= json.size() || json[pos] != ':') {
return std::string::npos;
}
++pos;
pos = SkipJsonWhitespace(json, pos);
if (pos >= json.size()) return std::string::npos;
if (currentKey == key) {
return pos;
}
pos = SkipJsonValue(json, pos);
}
return std::string::npos;
}
// Find a JSON array by key name and return its string elements.
static std::vector<std::wstring> ParseJsonStringArray(
const std::string& json,
const char* key)
{
std::vector<std::wstring> result;
size_t pos = FindTopLevelJsonValueStartByKey(json, key);
if (pos == std::string::npos) return result;
if (pos >= json.size() || json[pos] != '[') return result;
pos++; // consume '['
// Parse array elements
while (pos < json.size()) {
// Skip whitespace
while (pos < json.size() && (json[pos] == ' ' || json[pos] == '\t' ||
json[pos] == '\r' || json[pos] == '\n' ||
json[pos] == ','))
pos++;
if (pos >= json.size()) break;
if (json[pos] == ']') break;
if (json[pos] == '"') {
pos++; // consume opening quote
std::string val = ParseJsonString(json, pos);
result.push_back(Utf8ToWide(val));
} else {
pos++;
}
}
return result;
}
static std::wstring ParseJsonStringProperty(const std::string& json, const char* key)
{
size_t pos = FindTopLevelJsonValueStartByKey(json, key);
if (pos == std::string::npos) return {};
if (pos >= json.size() || json[pos] != '"') return {};
pos++;
return Utf8ToWide(ParseJsonString(json, pos));
}
struct PendingUpdatePlan
{
std::wstring packageType;
std::vector<std::wstring> removeList;
std::vector<std::wstring> moveList;
};
static bool LoadPendingUpdatePlan(
const std::wstring& planFile,
PendingUpdatePlan& outPlan,
std::wstring& failureReason,
std::string* rawJson)
{
outPlan = {};
failureReason.clear();
if (!PathExistsW(planFile)) {
failureReason = L"Plan file not found: " + planFile;
return false;
}
std::string planJson;
if (!TryReadUtf8File(planFile, planJson, failureReason)) {
return false;
}
if (rawJson != nullptr) {
*rawJson = planJson;
}
if (planJson.empty()) {
failureReason = L"Plan file is empty: " + planFile;
return false;
}
outPlan.packageType = ParseJsonStringProperty(planJson, "packageType");
outPlan.removeList = ParseJsonStringArray(planJson, "removeList");
outPlan.moveList = ParseJsonStringArray(planJson, "moveList");
return true;
}
static void PrintPlanEntries(const std::wstring& title, const std::vector<std::wstring>& entries)
{
WriteConsoleText(stdout, title + L" (" + std::to_wstring(entries.size()) + L")", true);
for (const std::wstring& entry : entries) {
WriteConsoleText(stdout, L" - " + entry, true);
}
}
static int RunPlanParserTest(const std::wstring& initialPlanFile)
{
std::wstring planFile = initialPlanFile;
if (planFile.empty()) {
WriteConsoleText(stdout, L"请输入要解析的 plan 文件路径 | Enter the plan file path to parse: ", false);
std::getline(std::wcin, planFile);
}
if (planFile.empty()) {
WriteConsoleText(stderr, L"未提供 plan 文件路径。 | No plan file path was provided.", true);
return 1;
}
PendingUpdatePlan plan;
std::wstring failureReason;
std::string rawJson;
if (!LoadPendingUpdatePlan(planFile, plan, failureReason, &rawJson)) {
WriteConsoleText(stderr, failureReason, true);
return 2;
}
WriteConsoleText(stdout, L"文件读取成功: " + planFile + L" | Plan file loaded successfully: " + planFile, true);
WriteConsoleText(stdout, L"原始字节数: " + std::to_wstring(rawJson.size()) + L" | Raw byte count: " + std::to_wstring(rawJson.size()), true);
WriteConsoleText(stdout, L"包类型: " + (plan.packageType.empty() ? std::wstring(L"<空>") : plan.packageType) +
L" | Package type: " + (plan.packageType.empty() ? std::wstring(L"<empty>") : plan.packageType), true);
PrintPlanEntries(L"待删除文件列表 | Files to remove", plan.removeList);
PrintPlanEntries(L"待安装文件列表 | Files to install", plan.moveList);
return 0;
}
// ---------------------------------------------------------------------------
// Update mutex helpers
// ---------------------------------------------------------------------------
// Acquires a named system mutex to prevent new MAA instances from starting
// while the update is in progress. Returns nullptr if the mutex cannot be
// acquired (e.g. another MAA instance holds the lock).
static HANDLE AcquireUpdateMutex(const std::wstring& mutexName)
{
HANDLE hMutex = CreateMutexW(nullptr, TRUE, mutexName.c_str());
if (hMutex == nullptr) {
WriteLog((L"CreateMutexW failed, error=" + std::to_wstring(GetLastError())).c_str());
return nullptr;
}
DWORD waitResult = WaitForSingleObject(hMutex, UPDATE_MUTEX_TIMEOUT_MS);
if (waitResult == WAIT_OBJECT_0) {
WriteLog((L"Mutex acquired: " + mutexName).c_str());
return hMutex;
}
if (waitResult == WAIT_ABANDONED) {
// Previous MAA instance terminated abnormally; we now own the mutex.
WriteLog((L"Mutex acquired after WAIT_ABANDONED (previous instance crashed): " + mutexName).c_str());
return hMutex;
}
if (waitResult == WAIT_TIMEOUT) {
WriteLog((L"Mutex acquisition timed out after " + std::to_wstring(UPDATE_MUTEX_TIMEOUT_MS) + L"ms: " + mutexName).c_str());
} else {
WriteLog((L"WaitForSingleObject failed, error=" + std::to_wstring(GetLastError())).c_str());
}
CloseHandle(hMutex);
return nullptr;
}
static void ReleaseUpdateMutex(HANDLE hMutex)
{
if (hMutex == nullptr || hMutex == INVALID_HANDLE_VALUE) {
return;
}
ReleaseMutex(hMutex);
CloseHandle(hMutex);
}
// ---------------------------------------------------------------------------
// Retry and force-delete helpers
// ---------------------------------------------------------------------------
// Retries a file operation with exponential backoff on lock-related errors.
// Returns true if the operation eventually succeeded.
// Does NOT retry on non-lock errors (ERROR_FILE_NOT_FOUND, etc.).
static bool RetryFileOp(const std::function<bool()>& op, int maxAttempts, DWORD initialDelayMs)
{
for (int attempt = 1; attempt <= maxAttempts; ++attempt) {
if (op()) {
return true;
}
DWORD error = GetLastError();
if (error != ERROR_SHARING_VIOLATION && error != ERROR_LOCK_VIOLATION &&
error != ERROR_ACCESS_DENIED) {
// Not a transient locking error — no point retrying.
return false;
}
if (attempt < maxAttempts) {
DWORD delay = initialDelayMs * static_cast<DWORD>(1 << (attempt - 1));
WriteLogF(L"RetryFileOp: attempt %d/%d failed (error=%u), retrying in %u ms",
attempt, maxAttempts, error, delay);
Sleep(delay);
}
}
return false;
}
// Renames a locked file to a unique name with .pendingdelete suffix.
// This works on NTFS even when the file is open with FILE_SHARE_DELETE.
// Returns the new path on success, or an empty string on failure.
static std::wstring RenameLockedFile(const std::wstring& path)
{
// Generate a unique suffix using tick count + a counter
static volatile LONG s_renameCounter = 0;
DWORD tick = GetTickCount();
LONG counter = InterlockedIncrement(&s_renameCounter);
wchar_t suffix[64];
_snwprintf_s(suffix, _countof(suffix), _TRUNCATE,
L".%08x%04x" PENDING_DELETE_SUFFIX, tick, static_cast<WORD>(counter & 0xFFFF));
std::wstring newPath = path + suffix;
// Try the rename; if it fails (e.g. path already exists), append more entropy
for (int attempt = 0; attempt < 10; ++attempt) {
if (MoveFileExW(path.c_str(), newPath.c_str(), MOVEFILE_REPLACE_EXISTING) != FALSE) {
WriteLogF(L"Renamed locked file: %ls -> %ls", path.c_str(), newPath.c_str());
return newPath;
}
// With MOVEFILE_REPLACE_EXISTING the only likely reason is sharing-violation
// on the source. Give it a brief retry.
Sleep(100);
std::wstring retryPath = newPath + L"." + std::to_wstring(attempt);
newPath = retryPath;
}
WriteLogF(L"Failed to rename locked file after 10 attempts: %ls", path.c_str());
return {};
}
// Attempts to delete a file through multiple escalation layers:
// 1. Normal DeleteFileW + retry
// 2. Rename the file out of the way, then delete
// 3. Schedule for deletion on next reboot (MOVEFILE_DELAY_UNTIL_REBOOT)
// Returns true if the file is no longer present at the original path.
static bool ForceDeleteFile(const std::wstring& path)
{
// --- Layer 1: Normal delete with retry ---
auto deleteOp = [&]() -> bool {
return DeleteFileW(path.c_str()) != FALSE;
};
if (RetryFileOp(deleteOp, FILE_OP_MAX_RETRIES, FILE_OP_INITIAL_DELAY_MS)) {
WriteLogF(L"Deleted file: %ls", path.c_str());
return true;
}
if (!PathExistsW(path)) {
return true; // already gone
}
// --- Layer 2: Rename then delete ---
std::wstring renamed = RenameLockedFile(path);
if (!renamed.empty()) {
// The rename succeeded; now try to delete the renamed file
RetryFileOp([&]() -> bool { return DeleteFileW(renamed.c_str()) != FALSE; },
3, 500);
if (PathExistsW(renamed)) {
WriteLogF(L"Renamed file could not be deleted immediately (will remain as .pendingdelete): %ls",
renamed.c_str());
}
// Even if we couldn't delete the renamed file, the original path is now free.
WriteLogF(L"File vacated via rename: %ls -> %ls", path.c_str(), renamed.c_str());
return true;
}
// --- Layer 3: Schedule for deletion on next reboot ---
if (MoveFileExW(path.c_str(), nullptr, MOVEFILE_DELAY_UNTIL_REBOOT) != FALSE) {
WriteLogF(L"Scheduled file for deletion on next reboot: %ls", path.c_str());
return true;
}
WriteLogF(L"All deletion strategies failed for: %ls (error=%u)", path.c_str(), GetLastError());
return false;
}
// Recursively removes a directory, using ForceDeleteFile for each file.
static bool ForceRemoveDirectoryRecursive(const std::wstring& dir)
{
std::wstring pattern = dir + L"\\*";
WIN32_FIND_DATAW fd {};
HANDLE hFind = FindFirstFileW(pattern.c_str(), &fd);
if (hFind != INVALID_HANDLE_VALUE) {
do {
if (wcscmp(fd.cFileName, L".") == 0 || wcscmp(fd.cFileName, L"..") == 0)
continue;
std::wstring child = dir + L"\\" + fd.cFileName;
if (fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
ForceRemoveDirectoryRecursive(child);
} else {
ForceDeleteFile(child);
}
} while (FindNextFileW(hFind, &fd));
FindClose(hFind);
}
return RemoveDirectoryW(dir.c_str()) != FALSE || !PathExistsW(dir);
}
// Atomically installs a file from sourcePath to targetPath.
// Uses ReplaceFileW which handles locked target files better than
// a separate copy-then-delete cycle.
// If ReplaceFileW fails, falls back to copy-then-move with retry.
static bool InstallFileAtomic(const std::wstring& sourcePath,
const std::wstring& targetPath)
{
EnsureParentDirectory(targetPath);
// Generate a temporary path alongside the target
DWORD tick = GetTickCount();
std::wstring tempPath = targetPath + L"." + std::to_wstring(tick) + L".tmpinstall";
// Copy source to the temp location first
{
DWORD attr = GetFileAttributesW(sourcePath.c_str());
if (attr == INVALID_FILE_ATTRIBUTES) {
WriteLogF(L"InstallFileAtomic: source not found: %ls", sourcePath.c_str());
return false;
}
auto copyOp = [&]() -> bool {
return CopyFileW(sourcePath.c_str(), tempPath.c_str(), FALSE) != FALSE;
};
if (!RetryFileOp(copyOp, FILE_OP_MAX_RETRIES, FILE_OP_INITIAL_DELAY_MS)) {
WriteLogF(L"InstallFileAtomic: failed to copy to temp: %ls (error=%u)",
tempPath.c_str(), GetLastError());
// Clean up the temp file if it exists
DeleteFileW(tempPath.c_str());
return false;
}
}
// --- Try ReplaceFileW (atomic swap) ---
{
auto replaceOp = [&]() -> bool {
// ReplaceFileW(replaced, replacement, backup, flags, exclude, reserved)
return ReplaceFileW(targetPath.c_str(),
tempPath.c_str(),
nullptr, // no additional backup needed
REPLACEFILE_IGNORE_MERGE_ERRORS | REPLACEFILE_WRITE_THROUGH,
nullptr, nullptr) != FALSE;
};
if (RetryFileOp(replaceOp, 3, 500)) {
WriteLogF(L"InstallFileAtomic: ReplaceFileW succeeded: %ls", targetPath.c_str());
return true;
}
}
// --- ReplaceFileW failed; fall back to copy-then-rename ---
WriteLogF(L"InstallFileAtomic: ReplaceFileW failed, falling back to MoveFileEx for: %ls",
targetPath.c_str());
// If the target exists and is locked, try to rename it out of the way
if (PathExistsW(targetPath)) {
std::wstring renamed = RenameLockedFile(targetPath);
if (!renamed.empty()) {
// Target path is now free; move temp into place
if (MoveFileExW(tempPath.c_str(), targetPath.c_str(), MOVEFILE_REPLACE_EXISTING) != FALSE) {
WriteLogF(L"InstallFileAtomic: installed after renaming locked target: %ls", targetPath.c_str());
return true;
}
}
}
// Last resort: direct move with retry
auto moveOp = [&]() -> bool {
return MoveFileExW(tempPath.c_str(), targetPath.c_str(), MOVEFILE_REPLACE_EXISTING) != FALSE;
};
if (RetryFileOp(moveOp, FILE_OP_MAX_RETRIES, FILE_OP_INITIAL_DELAY_MS)) {
WriteLogF(L"InstallFileAtomic: move succeeded: %ls", targetPath.c_str());
return true;
}
// Clean up temp file
DeleteFileW(tempPath.c_str());
WriteLogF(L"InstallFileAtomic: all strategies failed for: %ls", targetPath.c_str());
return false;
}
// Scans rootDir and deletes any remaining .pendingdelete files left
// from a previous interrupted update.
static void CleanupPendingDeleteFiles(const std::wstring& rootDir)
{
std::wstring pattern = rootDir + L"\\*" + PENDING_DELETE_SUFFIX;
int cleanedCount = 0;
WIN32_FIND_DATAW fd {};
HANDLE hFind = FindFirstFileW(pattern.c_str(), &fd);
if (hFind == INVALID_HANDLE_VALUE) {
return;
}
do {
if (fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
continue;
}
std::wstring filePath = rootDir + L"\\" + fd.cFileName;
auto deleteOp = [&]() -> bool {
return DeleteFileW(filePath.c_str()) != FALSE;
};
if (RetryFileOp(deleteOp, 3, 500)) {
++cleanedCount;
} else {
WriteLogF(L"Could not clean up pending-delete file: %ls", filePath.c_str());
}
} while (FindNextFileW(hFind, &fd));
FindClose(hFind);
if (cleanedCount > 0) {
WriteLogF(L"Cleaned up %d pending-delete file(s).", cleanedCount);
}
}
// ---------------------------------------------------------------------------
// Entry point
// ---------------------------------------------------------------------------
int wmain(int argc, wchar_t* argv[])
{
constexpr int REQUIRED_ARGS = 9; // excluding argv[0]
if (argc >= 2 && wcscmp(argv[1], L"--test-plan") == 0) {
return RunPlanParserTest(argc >= 3 ? argv[2] : L"");
}
if (argc - 1 < REQUIRED_ARGS) {
MessageBoxW(
nullptr,
L"MAA.Updater.exe 是 MAA 内部使用的更新程序，不应被手动启动。\n\n"
L"请直接运行 MAA.exe。\n\n"
L"MAA.Updater.exe is an updater used internally by MAA and should not be manually started.\n\n"
L"Please run MAA.exe directly.",
L"MAA 更新程序 | MAA Updater",
MB_OK | MB_ICONINFORMATION);
return 1;
}
DWORD parentPid = static_cast<DWORD>(_wtoi(argv[1]));
std::wstring rootDir = argv[2];
std::wstring extractDir = argv[3];
std::wstring backupDir = argv[4];
std::wstring packagePath = argv[5];
std::wstring successStatusFile = argv[6];
std::wstring failureStatusFile = argv[7];
std::wstring relaunchExecutable = argv[8];
std::wstring planFile = argv[9];
g_writeConsoleLog = HasArgument(argc, argv, L"--show-console");
g_suppressProgressUi = HasArgument(argc, argv, L"--no-progress-ui");
std::wstring mutexName;
for (int i = 1; i < argc - 1; ++i) {
if (_wcsicmp(argv[i], MUTEX_NAME_ARG) == 0) {
mutexName = argv[i + 1];
break;
}
}
g_logFile = rootDir + L"\\debug\\pending-update-applier.log";
RotateLogIfNeeded();
InitializeProgressUi();
SetProgressUiStatus(
L"正在准备更新... | Preparing update...",
L"等待 MAA 主程序退出 | Waiting for the main MAA process to exit");
WriteLog(L"MAA.Updater started (C++ external updater).");
WriteLog((std::wstring(L"Console output: ") + (g_writeConsoleLog ? L"enabled" : L"disabled")).c_str());
WriteLog((L"Parent PID: " + std::to_wstring(parentPid) + L", root dir: " + rootDir).c_str());
WriteLog((L"Plan file: " + planFile + L", extract dir: " + extractDir).c_str());
bool shouldRelaunch = false;
bool success = false;
std::wstring failureReason;
HANDLE hUpdateMutex = nullptr;
// ------------------------------------------------------------------
// Wait for parent process to exit
// ------------------------------------------------------------------
HANDLE hParent = OpenProcess(SYNCHRONIZE, FALSE, parentPid);
if (hParent != nullptr) {
WriteLog((L"Waiting for parent process to exit, PID=" + std::to_wstring(parentPid)).c_str());
while (WaitForSingleObject(hParent, 100) == WAIT_TIMEOUT) {
PumpProgressUiMessages();
}
CloseHandle(hParent);
WriteLog(L"Parent process exited.");
SetProgressUiStatus(
L"正在准备更新... | Preparing update...",
L"已确认主程序退出，开始读取更新计划 | Parent process exited, reading update plan");
} else {
WriteLog((L"Could not open the parent process, it may have already exited, PID=" + std::to_wstring(parentPid) + L". Continuing.").c_str());
SetProgressUiStatus(
L"正在准备更新... | Preparing update...",
L"主程序已退出，开始读取更新计划 | Main process already exited, reading update plan");
}
// ------------------------------------------------------------------
// Acquire update mutex to prevent new MAA instances from starting
// ------------------------------------------------------------------
if (!mutexName.empty()) {
hUpdateMutex = AcquireUpdateMutex(mutexName);
if (hUpdateMutex == nullptr) {
failureReason =
L"检测到另一个 MAA 实例正在运行，无法执行更新。请关闭所有 MAA 窗口后重试。\n\n"
L"Another MAA instance is running. Please close all MAA windows and try again.";
WriteLog(failureReason.c_str());
SetProgressUiStatus(
L"无法继续更新 | Update blocked",
L"检测到另一个 MAA 实例正在运行 | Another MAA instance is running");
} else {
WriteLog(L"Update mutex acquired, preventing new MAA instances from starting.");
}
// Clean up any .pendingdelete files left from a previous interrupted update
CleanupPendingDeleteFiles(rootDir);
} else {
WriteLog(L"No mutex name provided, update mutex will not be used.");
}
if (IsDriveRootDirectory(rootDir)) {
failureReason =
L"检测到 MAA 安装在盘符根目录，已阻止更新继续执行。请先将 MAA 移动到独立文件夹后再重试。\n\n"
L"Detected MAA installed directly in a drive root. Update execution was blocked. Please move MAA into a dedicated folder and try again.";
WriteLog(failureReason.c_str());
SetProgressUiStatus(
L"无法继续更新 | Update blocked",
L"检测到盘符根目录安装 | Drive-root install detected");
}
// ------------------------------------------------------------------
// Read plan
// ------------------------------------------------------------------
do {
if (!failureReason.empty()) {
break;
}
PendingUpdatePlan plan;
if (!LoadPendingUpdatePlan(planFile, plan, failureReason)) {
WriteLog(failureReason.c_str());
break;
}
bool isFullPackage = EqualsIgnoreCase(plan.packageType, L"full");
const std::vector<std::wstring>& removeList = plan.removeList;
const std::vector<std::wstring>& moveList = plan.moveList;
SetProgressUiTotalFileCount(static_cast<int>(removeList.size() + moveList.size()));
SetProgressUiStatus(
L"正在分析更新内容... | Analyzing update contents...",
L"更新计划读取完成 | Update plan loaded");
WriteLog((L"Plan loaded, package type: " + plan.packageType + L", remove entries: " + std::to_wstring(removeList.size()) + L", install entries: " + std::to_wstring(moveList.size())).c_str());
WriteLogEntries(L"Files to remove", removeList);
WriteLogEntries(L"Files to install", moveList);
CreateDirectoryW(backupDir.c_str(), nullptr);
// ---- Remove entries ----
for (const std::wstring& rel : removeList) {
std::wstring targetPath;
if (!TryResolvePathUnderRoot(rootDir, rel, targetPath)) {
failureReason = L"Illegal path in removeList: " + rel;
WriteLog(failureReason.c_str());
goto apply_failed;
}
if (!PathExistsW(targetPath)) {
AdvanceProgressUi(
L"正在清理旧文件... | Cleaning old files...",
rel);
continue;
}
if (!isFullPackage && IsDirectory(targetPath)) {
WriteLog((L"Skipping directory removal for a non-full package, entry: " + rel + L", target: " + targetPath).c_str());
AdvanceProgressUi(
L"正在清理旧文件... | Cleaning old files...",
rel);
continue;
}
std::wstring backupPath;
if (!TryResolvePathUnderRoot(backupDir, rel, backupPath)) {
failureReason = L"Illegal backup path for removeList: " + rel;
WriteLog(failureReason.c_str());
goto apply_failed;
}
WriteLog((L"Removing and backing up: " + targetPath + L" -> " + backupPath).c_str());
bool backupOk = isFullPackage
? RecycleAndBackupPath(targetPath, backupPath)
: MoveExistingPathToBackup(targetPath, backupPath);
if (!backupOk) {
failureReason = L"Failed to move to backup: " + targetPath;
WriteLog(failureReason.c_str());
goto apply_failed;
}
AdvanceProgressUi(
L"正在清理旧文件... | Cleaning old files...",
rel);
}
// ---- Move/install entries ----
for (const std::wstring& rel : moveList) {
std::wstring sourcePath, targetPath, backupPath;
if (!TryResolvePathUnderRoot(extractDir, rel, sourcePath) ||
!TryResolvePathUnderRoot(rootDir, rel, targetPath) ||
!TryResolvePathUnderRoot(backupDir, rel, backupPath))
{
failureReason = L"Illegal path in moveList: " + rel;
WriteLog(failureReason.c_str());
goto apply_failed;
}
if (PathExistsW(targetPath)) {
if (!isFullPackage && IsDirectory(targetPath)) {
failureReason = L"Non-full package cannot replace directory: " + targetPath;
WriteLog(failureReason.c_str());
goto apply_failed;
}
WriteLog((L"Backing up existing entry: " + targetPath).c_str());
bool backupOk = IsRecycleAndReplaceDirectory(rel)
? RecycleAndBackupDirectory(targetPath, backupPath)
: MoveExistingPathToBackup(targetPath, backupPath);
if (!backupOk) {
failureReason = L"Failed to back up existing entry: " + targetPath;
WriteLog(failureReason.c_str());
goto apply_failed;
}
}
WriteLog((L"Installing new file: " + sourcePath + L" -> " + targetPath).c_str());
bool installOk = false;
DWORD sourceAttr = GetFileAttributesW(sourcePath.c_str());
bool isSourceFile = (sourceAttr != INVALID_FILE_ATTRIBUTES) &&
!(sourceAttr & FILE_ATTRIBUTE_DIRECTORY);
if (isSourceFile) {
// Use atomic file replacement for individual files
installOk = InstallFileAtomic(sourcePath, targetPath);
} else {
// Directories: use the original move logic
auto moveOp = [&]() -> bool {
return MoveFileExW(sourcePath.c_str(), targetPath.c_str(),
MOVEFILE_REPLACE_EXISTING) != FALSE;
};
installOk = RetryFileOp(moveOp, FILE_OP_MAX_RETRIES, FILE_OP_INITIAL_DELAY_MS);
}
if (!installOk) {
failureReason = L"Failed to move file into place: " + sourcePath;
WriteLog(failureReason.c_str());
goto apply_failed;
}
AdvanceProgressUi(
L"正在安装新文件... | Installing new files...",
rel);
}
// ---- Cleanup package ----
if (PathExistsW(packagePath)) {
DeleteFileW(packagePath.c_str());
WriteLog((L"Deleted update package: " + packagePath).c_str());
}
if (PathExistsW(failureStatusFile))
DeleteFileW(failureStatusFile.c_str());
SetProgressUiStatus(
L"正在完成更新... | Finalizing update...",
L"正在写入更新结果 | Writing update result");
if (WriteUtf8File(successStatusFile, "succeeded")) {
WriteLog((L"Wrote success status file: " + successStatusFile).c_str());
success = true;
shouldRelaunch = true;
} else {
failureReason = L"Failed to write success status file: " + successStatusFile;
WriteLog(failureReason.c_str());
}
break; // normal exit from do-while
apply_failed:
success = false;
// Attempt rollback: restore files that were already backed up
WriteLog(L"Update failed, attempting rollback from backup directory.");
for (const std::wstring& rel : removeList) {
std::wstring targetPath, backupPath;
if (!TryResolvePathUnderRoot(rootDir, rel, targetPath) ||
!TryResolvePathUnderRoot(backupDir, rel, backupPath)) {
continue;
}
if (PathExistsW(backupPath) && !PathExistsW(targetPath)) {
WriteLog((L"Rollback: restoring " + backupPath + L" -> " + targetPath).c_str());
MovePathEntry(backupPath, targetPath);
}
}
for (const std::wstring& rel : moveList) {
std::wstring targetPath, backupPath;
if (!TryResolvePathUnderRoot(rootDir, rel, targetPath) ||
!TryResolvePathUnderRoot(backupDir, rel, backupPath)) {
continue;
}
if (PathExistsW(backupPath) && !PathExistsW(targetPath)) {
WriteLog((L"Rollback: restoring " + backupPath + L" -> " + targetPath).c_str());
MovePathEntry(backupPath, targetPath);
}
}
} while (false);
// ------------------------------------------------------------------
// On failure: write failure status
// ------------------------------------------------------------------
if (!success && !failureReason.empty()) {
// Convert wstring reason to UTF-8 for file
std::string utf8Reason;
if (TryConvertWideToUtf8(failureReason, utf8Reason)) {
WriteUtf8File(failureStatusFile, utf8Reason);
}
if (PathExistsW(successStatusFile))
DeleteFileW(successStatusFile.c_str());
WriteLog((L"Update failed: " + failureReason).c_str());
ShowProgressUiFailure(failureReason);
}
// ------------------------------------------------------------------
// Cleanup extract dir and plan file
// ------------------------------------------------------------------
if (PathExistsW(extractDir)) {
WriteLog((L"Cleaning extract directory: " + extractDir).c_str());
ForceRemoveDirectoryRecursive(extractDir);
}
if (PathExistsW(planFile))
DeleteFileW(planFile.c_str());
// ------------------------------------------------------------------
// Release update mutex
// ------------------------------------------------------------------
if (hUpdateMutex != nullptr) {
ReleaseUpdateMutex(hUpdateMutex);
hUpdateMutex = nullptr;
WriteLog(L"Update mutex released.");
}
// ------------------------------------------------------------------
// Relaunch MAA
// ------------------------------------------------------------------
if (shouldRelaunch && PathExistsW(relaunchExecutable)) {
CompleteProgressUi(
L"更新完成 | Update completed",
L"正在重新启动 MAA... | Relaunching MAA...");
WriteLog((L"Relaunching MAA: " + relaunchExecutable).c_str());
// Find working directory (parent of the executable)
std::wstring workDir = relaunchExecutable;
size_t sep = workDir.rfind(L'\\');
if (sep != std::wstring::npos) workDir = workDir.substr(0, sep);
STARTUPINFOW si {};
si.cb = sizeof(si);
PROCESS_INFORMATION pi {};
std::wstring cmdLine = L"\"" + relaunchExecutable + L"\"";
if (CreateProcessW(
relaunchExecutable.c_str(),
cmdLine.data(),
nullptr, nullptr, FALSE, 0, nullptr,
workDir.c_str(),
&si, &pi))
{
CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);
WriteLog(L"Relaunch succeeded.");
} else {
WriteLog((L"Relaunch failed, error=" + std::to_wstring(GetLastError())).c_str());
ShowProgressUiFailure(
L"更新已完成，但重新启动 MAA 失败，请手动启动 MAA。\n"
L"Update finished, but failed to relaunch MAA. Please start MAA manually.");
}
} else if (success) {
CompleteProgressUi(
L"更新完成 | Update completed",
L"更新已完成，请手动启动 MAA。 | Update completed. Please start MAA manually.");
}
WriteLog(L"MAA.Updater exiting.");
DestroyProgressUi();
return success ? 0 : 2;
}
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