C ++服务在Windows关闭然后启动后不启动

Question

我想用 c++ 制作一个 Windows 服务，以便在每次用户登录时以管理员身份启动我的程序，而不会弹出 UAC 窗口 由于这是我第一次这样做，所以我从这里使用了该项目：https://code.msdn.microsoft.com/windowsapps/CppWindowsService-cacf4948/view/SourceCode

我在CppWindowsService中编辑了第74行.cpp为：

InstallService(
SERVICE_NAME,               // Name of service
SERVICE_DISPLAY_NAME,       // Name to display
SERVICE_AUTO_START,         // Service start type
SERVICE_DEPENDENCIES,       // Dependencies
0,            // Service running account
SERVICE_PASSWORD            // Password of the account
);

并在 SampleService 的工作线程中添加了一些代码.cpp第 101 行，如下所示：

void CSampleService::ServiceWorkerThread(void)
{
// Periodically check if the service is stopping.
PSID gpSidMIL_High;
ConvertStringSidToSidW(L"S-1-16-12288", &gpSidMIL_High);
DWORD userSessionID = WTSGetActiveConsoleSessionId();
HANDLE hToken, hToken2;

if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ALL_ACCESS, &hToken)) WriteEventLogEntry(L"OpenProcessToken failed error", EVENTLOG_ERROR_TYPE);
if (!DuplicateTokenEx(hToken, MAXIMUM_ALLOWED, NULL, SecurityIdentification, TokenPrimary, &hToken2)) WriteEventLogEntry(L"DuplicateTokenEx error", EVENTLOG_ERROR_TYPE);
if (!SetTokenInformation(hToken2, TokenSessionId, &userSessionID, sizeof(userSessionID))) WriteEventLogEntry(L"SetTokenInformation 1 error", EVENTLOG_ERROR_TYPE);
DWORD dwUIAccess = 1;
if (!SetTokenInformation(hToken2, TokenUIAccess, &dwUIAccess, sizeof(dwUIAccess))) WriteEventLogEntry(L"SetTokenInformation 2 error", EVENTLOG_ERROR_TYPE);
//Set "high" mandatory integrity level
TOKEN_MANDATORY_LABEL tml = { 0 };
tml.Label.Attributes = SE_GROUP_INTEGRITY;
tml.Label.Sid = gpSidMIL_High;
if (!SetTokenInformation(hToken2, TokenIntegrityLevel, &tml, sizeof(TOKEN_MANDATORY_LABEL) + ::GetSidLengthRequired(1))) WriteEventLogEntry(L"SetTokenInformation 3 error", EVENTLOG_ERROR_TYPE);
LPVOID pEnv = 0;
if (!CreateEnvironmentBlock(&pEnv, hToken2, FALSE)) WriteEventLogEntry(L"CreateEnvironmentBlock error", EVENTLOG_ERROR_TYPE);
if (!ImpersonateLoggedOnUser(hToken2)) WriteEventLogEntry(L"ImpersonateLoggedOnUser error", EVENTLOG_ERROR_TYPE);
while (!m_fStopping)
{
STARTUPINFO stinfo = { 0 };
PROCESS_INFORMATION pinfo = { 0 };
stinfo.cb = sizeof(stinfo);
stinfo.lpDesktop = L"winsta0\default";
if (!CreateProcessAsUserW(hToken2, L"path to exe that shows a message box", 0, 0, 0, FALSE, CREATE_UNICODE_ENVIRONMENT|CREATE_BREAKAWAY_FROM_JOB, pEnv, L"cwd of the exe file", &stinfo, &pinfo))
{
// after debugging I found that the error is coming from here 
std::wstring error = L"CreateProcessAsUserW failed with error : ";
error += std::to_wstring(GetLastError());
WriteEventLogEntry(wcsdup(error.c_str()), EVENTLOG_ERROR_TYPE);
Sleep(10000);
}
while (!m_fStopping && pinfo.hProcess)
{
if(WaitForSingleObject(pinfo.hProcess, 1000) != WAIT_TIMEOUT) break;
}
// ::Sleep(2000);  // Simulate some lengthy operations.
}

问题是此服务在重新启动 Windows 或通过 sc.exe 或服务控制管理器手动启动后运行良好，但在从上次关闭启动后则不然 当我关闭然后启动计算机时，我可以看到任务管理器中运行的服务的exe，所以我知道该服务正在运行并且有一个错误来自一个函数，我使用了Windows事件并记录了错误，我终于发现错误来自CreateProcessAsUser，返回错误5(访问被拒绝) 我不知道这里的问题在哪里，因为服务在重新启动后或手动启动时运行良好

Answer 1

在快速启动期间不调用ServiceMain。 使用快速启动时，会话 0(包括内核、驱动程序、所有服务)未终止。当您关机并继续运行时，它会休眠会话 0，就像在用户注销时挂断虚拟机一样。因此，您的服务将保持状态，而不是重新启动。

处理此问题的简单方法： 处理SERVICE_ACCEPT_SESSIONCHANGE控制代码。

下面是一个示例。

SERVICE_STATUS gSvcStatus;
DWORD WINAPI HandleCtrlEx(
DWORD dwControl,
DWORD dwEventType,
LPVOID lpEventData,
LPVOID lpContext
)
{
// Handle the requested control code. 
switch (dwControl)
{
case SERVICE_CONTROL_SHUTDOWN:
case SERVICE_CONTROL_STOP:
ReportSvcStatus(SERVICE_STOP_PENDING, NO_ERROR, 0);
// Signal the service to stop.
SetEvent(ghSvcStopEvent);
ReportSvcStatus(gSvcStatus.dwCurrentState, NO_ERROR, 0);
break;
case SERVICE_CONTROL_SESSIONCHANGE:
if (dwEventType == WTS_SESSION_LOGON) {
DWORD *data = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DWORD));
*data = ((PWTSSESSION_NOTIFICATION)lpEventData)->dwSessionId;
HANDLE hThread = CreateThread(NULL, 0, RunProgram, data, 0, NULL);// remember to free memory in RunProgram
if (!hThread) {
PrintLogA(LOG"can't create thread,error:%u", GetLastError());
}
else {
CloseHandle(hThread);
}
}
break;
default:
break;
}
return NO_ERROR;
}
VOID ReportSvcStatus(DWORD dwCurrentState,
DWORD dwWin32ExitCode,
DWORD dwWaitHint)
{
static DWORD dwCheckPoint = 1;
// Fill in the SERVICE_STATUS structure.
gSvcStatus.dwCurrentState = dwCurrentState;
gSvcStatus.dwWin32ExitCode = dwWin32ExitCode;
gSvcStatus.dwWaitHint = dwWaitHint;
if (dwCurrentState == SERVICE_START_PENDING)
gSvcStatus.dwControlsAccepted = 0;
else {
gSvcStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP;
gSvcStatus.dwControlsAccepted |= SERVICE_ACCEPT_SESSIONCHANGE;// <--- remember add this.
}
if ((dwCurrentState == SERVICE_RUNNING) ||
(dwCurrentState == SERVICE_STOPPED))
gSvcStatus.dwCheckPoint = 0;
else gSvcStatus.dwCheckPoint = dwCheckPoint++;
// Report the status of the service to the SCM.
SetServiceStatus(gSvcStatusHandle, &gSvcStatus);
}
VOID SvcInit(DWORD dwArgc, LPTSTR *lpszArgv)
{
ghSvcStopEvent = CreateEvent(
NULL,    // default security attributes
TRUE,    // manual reset event
FALSE,   // not signaled
NULL);   // no name
if (ghSvcStopEvent == NULL)
{
ReportSvcStatus(SERVICE_STOPPED, NO_ERROR, 0);
return;
}
// Report running status when initialization is complete.
ReportSvcStatus(SERVICE_RUNNING, NO_ERROR, 0);
RunProgram();
// Check whether to stop the service.
WaitForSingleObject(ghSvcStopEvent, INFINITE);
ReportSvcStatus(SERVICE_STOPPED, NO_ERROR, 0);
return;
}
VOID WINAPI SvcMain(DWORD dwArgc, LPTSTR *lpszArgv){
// Register the handler function for the service
gSvcStatusHandle = RegisterServiceCtrlHandlerEx(
SVCNAME,
HandleCtrlEx,
NULL);
if (!gSvcStatusHandle)
{
SvcReportEventA(LOG"RegisterServiceCtrlHandler failed");
return;
}
// These SERVICE_STATUS members remain as set here
gSvcStatus.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
gSvcStatus.dwServiceSpecificExitCode = 0;
// Report initial status to the SCM
ReportSvcStatus(SERVICE_START_PENDING, NO_ERROR, 3000);
// Perform service-specific initialization and work.
SvcInit(dwArgc, lpszArgv);
}

Answer 2

这些是要初始化的类的成员：

PSID gpSidMIL_High = 0;
DWORD userSessionID = 0;
HANDLE hToken = 0, hToken2 = 0;
DWORD dwUIAccess = 1;
TOKEN_MANDATORY_LABEL tml = { 0 };
LPVOID pEnv = 0;
STARTUPINFO stinfo = { 0 };
PROCESS_INFORMATION pinfo = { 0 };

在受保护的方法中，我制作了此方法：

void intialize();

这是函数：

void CSampleService::intialize() {
// the members may were used before , without assigning them to zero again all the functions below will fail , I don't know why ?
gpSidMIL_High = 0;
userSessionID = 0;
hToken = 0, hToken2 = 0;
dwUIAccess = 1;
tml = { 0 };
pEnv = 0;
stinfo = { 0 };
pinfo = { 0 };
WriteEventLogEntry(L"initializing", EVENTLOG_INFORMATION_TYPE);
ConvertStringSidToSidW(L"S-1-16-12288", &gpSidMIL_High);
userSessionID = WTSGetActiveConsoleSessionId();
if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ALL_ACCESS, &hToken)) WriteErrorLogEntry(L"OpenProcessToken");
if (!DuplicateTokenEx(hToken, MAXIMUM_ALLOWED, NULL, SecurityIdentification, TokenPrimary, &hToken2)) WriteErrorLogEntry(L"DuplicateTokenEx error");
if (!SetTokenInformation(hToken2, TokenSessionId, &userSessionID, sizeof(userSessionID))) WriteErrorLogEntry(L"SetTokenInformation 1 error");
if (!SetTokenInformation(hToken2, TokenUIAccess, &dwUIAccess, sizeof(dwUIAccess))) WriteErrorLogEntry(L"SetTokenInformation 2");
//Set "high" mandatory integrity level
//TOKEN_MANDATORY_LABEL tml = { 0 };
tml.Label.Attributes = SE_GROUP_INTEGRITY;
tml.Label.Sid = gpSidMIL_High;
if (!SetTokenInformation(hToken2, TokenIntegrityLevel, &tml, sizeof(TOKEN_MANDATORY_LABEL) + ::GetSidLengthRequired(1))) WriteErrorLogEntry(L"SetTokenInformation 3");
LPVOID pEnv = 0;
if (!CreateEnvironmentBlock(&pEnv, hToken2, FALSE)) WriteErrorLogEntry(L"CreateEnvironmentBlock");
}

最后在工作线程中：

void CSampleService::ServiceWorkerThread(void)
{
WriteEventLogEntry(L"the thread of the service started", EVENTLOG_INFORMATION_TYPE);
intialize();
while (!m_fStopping)
{
stinfo.cb = sizeof(stinfo);
stinfo.lpDesktop = L"winsta0\default";
// the service starts from here after fast boot
if (!CreateProcessAsUserW(hToken2, L"C:\Users\user\Desktop\ConEmuTrap\test.exe", 0, 0, 0, FALSE, CREATE_UNICODE_ENVIRONMENT | CREATE_BREAKAWAY_FROM_JOB, pEnv, L"C:\Users\user\Desktop\ConEmuTrap", &stinfo, &pinfo))
{
WriteErrorLogEntry(L"CreateProcessAsUserW 1");
intialize();
}
while (!m_fStopping && pinfo.hProcess)
{
if(WaitForSingleObject(pinfo.hProcess, 1000) != WAIT_TIMEOUT) break;
}
}