763 lines
26 KiB
C++
763 lines
26 KiB
C++
// --------------------------------------------------------------------------
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// Module Name: Service.cpp
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//
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// Copyright (c) 2000, Microsoft Corporation
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//
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// This file contains a class that implements generic portions of a Win32
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// serivce.
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//
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// History: 2000-11-29 vtan created
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// --------------------------------------------------------------------------
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#include "StandardHeader.h"
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#include "Service.h"
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#include "RegistryResources.h"
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#include "StatusCode.h"
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// --------------------------------------------------------------------------
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// CService::CService
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//
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// Arguments: pAPIConnection = CAPIConnection used to implement service.
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// pServerAPI = CServerAPI used to stop service.
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// pszServiceName = Name of service.
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//
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// Returns: <none>
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//
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// Purpose: Constructor for CService.
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//
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// History: 2000-11-29 vtan created
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// --------------------------------------------------------------------------
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CService::CService (CAPIConnection *pAPIConnection, CServerAPI *pServerAPI, const TCHAR *pszServiceName) :
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_hService(NULL),
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_pszServiceName(pszServiceName),
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_pAPIConnection(pAPIConnection),
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_pServerAPI(pServerAPI)
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{
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ZeroMemory(&_serviceStatus, sizeof(_serviceStatus));
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pAPIConnection->AddRef();
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pServerAPI->AddRef();
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}
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// --------------------------------------------------------------------------
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// CService::~CService
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//
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// Arguments: <none>
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//
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// Returns: <none>
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//
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// Purpose: Destructor for CService. Release used resources.
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//
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// History: 2000-11-29 vtan created
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// --------------------------------------------------------------------------
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CService::~CService (void)
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{
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_pServerAPI->Release();
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_pServerAPI = NULL;
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_pAPIConnection->Release();
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_pAPIConnection = NULL;
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ASSERTMSG(_hService == NULL, "_hService should be released in CService::~CService");
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}
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// --------------------------------------------------------------------------
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// CService::Start
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//
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// Arguments: <none>
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//
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// Returns: <none>
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//
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// Purpose: Called from ServiceMain of the service. This registers the
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// handler and starts the service (listens to the API port).
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// When the listen call returns it sets the status of the service
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// as stopped and exits.
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//
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// History: 2000-11-29 vtan created
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// --------------------------------------------------------------------------
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void CService::Start (void)
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{
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// Add a reference for the HandlerEx callback. When the handler receives
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// a stop code it will release its reference.
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AddRef();
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_hService = RegisterServiceCtrlHandlerEx(_pszServiceName, CB_HandlerEx, this);
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if (_hService != NULL)
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{
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NTSTATUS status;
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_serviceStatus.dwServiceType = SERVICE_WIN32_SHARE_PROCESS;
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_serviceStatus.dwCurrentState = SERVICE_RUNNING;
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_serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
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_serviceStatus.dwWin32ExitCode = NO_ERROR;
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_serviceStatus.dwCheckPoint = 0;
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_serviceStatus.dwWaitHint = 0;
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TBOOL(SetServiceStatus(_hService, &_serviceStatus));
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TSTATUS(Signal());
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status = _pAPIConnection->Listen();
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_serviceStatus.dwCurrentState = SERVICE_STOPPED;
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_serviceStatus.dwWin32ExitCode = CStatusCode::ErrorCodeOfStatusCode(status);
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_serviceStatus.dwCheckPoint = 0;
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_serviceStatus.dwWaitHint = 0;
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TBOOL(SetServiceStatus(_hService, &_serviceStatus));
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_hService = NULL;
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}
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else
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{
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Release();
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}
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}
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// --------------------------------------------------------------------------
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// CService::Install
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//
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// Arguments: pszName = Name of the service.
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// pszImage = Executable image of the service.
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// pszGroup = Group to which the service belongs.
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// pszAccount = Account under which the service runs.
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// pszDllName = Name of the hosting dll.
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// pszDependencies = Any dependencies the service has.
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// pszSvchostGroup = The svchost group.
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// dwStartType = Start type of the service.
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// hInstance = HINSTANCE for resources.
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// uiDisplayNameID = Resource ID of the display name.
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// uiDescriptionID = Resource ID of the description.
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//
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// Returns: NTSTATUS
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//
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// Purpose: Use the service control manager to create the service. Add
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// additional information that CreateService does not allow us to
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// directly specify and add additional information that is
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// required to run in svchost.exe as a shared service process.
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//
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// History: 2000-11-29 vtan created
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// --------------------------------------------------------------------------
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NTSTATUS CService::Install (const TCHAR *pszName,
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const TCHAR *pszImage,
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const TCHAR *pszGroup,
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const TCHAR *pszAccount,
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const TCHAR *pszDllName,
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const TCHAR *pszDependencies,
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const TCHAR *pszSvchostGroup,
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const TCHAR *pszServiceMainName,
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DWORD dwStartType,
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HINSTANCE hInstance,
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UINT uiDisplayNameID,
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UINT uiDescriptionID,
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SERVICE_FAILURE_ACTIONS *psfa)
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{
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NTSTATUS status;
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status = AddService(pszName, pszImage, pszGroup, pszAccount, pszDependencies, dwStartType, hInstance, uiDisplayNameID, psfa);
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if (NT_SUCCESS(status))
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{
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status = AddServiceDescription(pszName, hInstance, uiDescriptionID);
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if (NT_SUCCESS(status))
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{
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status = AddServiceParameters(pszName, pszDllName, pszServiceMainName);
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if (NT_SUCCESS(status))
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{
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status = AddServiceToGroup(pszName, pszSvchostGroup);
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}
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}
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}
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if (!NT_SUCCESS(status))
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{
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TSTATUS(Remove(pszName));
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}
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return(status);
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}
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// --------------------------------------------------------------------------
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// CService::Remove
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//
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// Arguments: pszName = Name of service to remove.
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//
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// Returns: NTSTATUS
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//
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// Purpose: Use the service control manager to delete the service. This
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// doesn't clean up the turds left for svchost usage.
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//
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// History: 2000-11-29 vtan created
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// --------------------------------------------------------------------------
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NTSTATUS CService::Remove (const TCHAR *pszName)
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{
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NTSTATUS status;
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SC_HANDLE hSCManager;
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hSCManager = OpenSCManager(NULL, NULL, SC_MANAGER_CREATE_SERVICE);
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if (hSCManager != NULL)
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{
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SC_HANDLE hSCService;
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hSCService = OpenService(hSCManager, pszName, DELETE);
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if (hSCService != NULL)
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{
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if (DeleteService(hSCService) != FALSE)
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{
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status = STATUS_SUCCESS;
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}
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else
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{
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status = CStatusCode::StatusCodeOfLastError();
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}
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TBOOL(CloseServiceHandle(hSCService));
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}
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else
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{
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status = CStatusCode::StatusCodeOfLastError();
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}
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TBOOL(CloseServiceHandle(hSCManager));
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}
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else
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{
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status = CStatusCode::StatusCodeOfLastError();
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}
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return(status);
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}
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// --------------------------------------------------------------------------
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// CService::Signal
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//
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// Arguments: <none>
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//
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// Returns: NTSTATUS
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//
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// Purpose: Base class implementation of signal service started function.
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// This does nothing.
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//
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// History: 2000-11-29 vtan created
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// --------------------------------------------------------------------------
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NTSTATUS CService::Signal (void)
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{
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return(STATUS_SUCCESS);
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}
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// --------------------------------------------------------------------------
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// CService::HandlerEx
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//
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// Arguments: dwControl = Control code from service control manager.
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//
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// Returns: DWORD
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//
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// Purpose: HandlerEx function for the service. The base class implements
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// most of the useful things that the service will want to do.
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// It's declared virtual in case overriding is required.
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//
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// History: 2000-11-29 vtan created
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// --------------------------------------------------------------------------
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DWORD CService::HandlerEx (DWORD dwControl)
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{
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DWORD dwErrorCode;
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SERVICE_STATUS_HANDLE hService;
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hService = _hService;
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switch (dwControl)
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{
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case SERVICE_CONTROL_STOP:
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case SERVICE_CONTROL_SHUTDOWN:
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{
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NTSTATUS status;
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CServiceWorkItem *pServiceWorkItem;
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// In the stop/shutdown case respond to the message by setting
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// the status to SERVICE_STOP_PENDING. Create a workitem to end
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// the main service thread by sending an LPC request down the
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// port telling it to quit. This call can only succeed if it
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// comes from within the process. If the queue fails the stop
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// the server inline on the shared dispatcher thread.
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_serviceStatus.dwCurrentState = SERVICE_STOP_PENDING;
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TBOOL(SetServiceStatus(hService, &_serviceStatus));
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pServiceWorkItem = new CServiceWorkItem(_pServerAPI);
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if (pServiceWorkItem != NULL)
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{
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status = pServiceWorkItem->Queue();
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pServiceWorkItem->Release();
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}
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else
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{
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status = STATUS_NO_MEMORY;
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}
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if (!NT_SUCCESS(status))
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{
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TSTATUS(_pServerAPI->Stop());
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}
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hService = NULL;
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dwErrorCode = CStatusCode::ErrorCodeOfStatusCode(status);
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break;
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}
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case SERVICE_CONTROL_PAUSE:
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dwErrorCode = ERROR_CALL_NOT_IMPLEMENTED;
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break;
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case SERVICE_CONTROL_CONTINUE:
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dwErrorCode = ERROR_CALL_NOT_IMPLEMENTED;
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break;
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case SERVICE_CONTROL_INTERROGATE:
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dwErrorCode = NO_ERROR;
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break;
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case SERVICE_CONTROL_PARAMCHANGE:
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case SERVICE_CONTROL_NETBINDADD:
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case SERVICE_CONTROL_NETBINDREMOVE:
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case SERVICE_CONTROL_NETBINDENABLE:
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case SERVICE_CONTROL_NETBINDDISABLE:
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case SERVICE_CONTROL_DEVICEEVENT:
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case SERVICE_CONTROL_HARDWAREPROFILECHANGE:
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case SERVICE_CONTROL_POWEREVENT:
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dwErrorCode = ERROR_CALL_NOT_IMPLEMENTED;
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break;
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default:
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DISPLAYMSG("Unknown service control code passed to CService::HandlerEx");
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dwErrorCode = ERROR_CALL_NOT_IMPLEMENTED;
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break;
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}
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// If the SERVICE_STATUS_HANDLE is still valid then set the service
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// status code. Otherwise the service thread has been terminated by
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// a SERVICE_CONTROL_STOP or SERVICE_CONTROL_SHUTDOWN code.
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if (hService != NULL)
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{
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TBOOL(SetServiceStatus(hService, &_serviceStatus));
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}
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else
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{
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// In the stop case release the reference so the object is destroyed.
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Release();
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}
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return(dwErrorCode);
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}
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// --------------------------------------------------------------------------
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// CService::CB_HandlerEx
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//
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// Arguments: See the platform SDK under HandlerEx.
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//
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// Returns: DWORD
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//
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// Purpose: Static function stub to call into the class.
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//
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// History: 2000-11-29 vtan created
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// --------------------------------------------------------------------------
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DWORD WINAPI CService::CB_HandlerEx (DWORD dwControl, DWORD dwEventType, LPVOID lpEventData, LPVOID lpContext)
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{
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UNREFERENCED_PARAMETER(dwEventType);
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UNREFERENCED_PARAMETER(lpEventData);
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return(reinterpret_cast<CService*>(lpContext)->HandlerEx(dwControl));
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}
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// --------------------------------------------------------------------------
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// CService:AddService
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//
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// Arguments: pszName = Name of the service.
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// pszImage = Executable image of the service.
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// pszGroup = Group to which the service belongs.
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// pszAccount = Account under which the service runs.
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// pszDependencies = Any dependencies the service has.
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// dwStartType = Start type of the service.
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// hInstance = HINSTANCE for resources.
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// uiDisplayNameID = Resource ID of the display name.
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//
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// Returns: NTSTATUS
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//
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// Purpose: Uses the service control manager to create the service and add
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// it into the database.
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//
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// History: 2000-12-09 vtan created
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// --------------------------------------------------------------------------
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NTSTATUS CService::AddService (const TCHAR *pszName,
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const TCHAR *pszImage,
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const TCHAR *pszGroup,
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const TCHAR *pszAccount,
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const TCHAR *pszDependencies,
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DWORD dwStartType,
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HINSTANCE hInstance,
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UINT uiDisplayNameID,
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SERVICE_FAILURE_ACTIONS *psfa)
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{
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DWORD dwErrorCode;
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SC_HANDLE hSCManager;
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hSCManager = OpenSCManager(NULL, NULL, SC_MANAGER_CREATE_SERVICE);
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if (hSCManager != NULL)
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{
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TCHAR sz[256];
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if (LoadString(hInstance, uiDisplayNameID, sz, ARRAYSIZE(sz)) != 0)
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{
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SC_HANDLE hSCService;
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hSCService = CreateService(hSCManager,
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pszName,
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sz,
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SERVICE_ALL_ACCESS,
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SERVICE_WIN32_SHARE_PROCESS,
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dwStartType,
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SERVICE_ERROR_NORMAL,
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pszImage,
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pszGroup,
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NULL,
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pszDependencies,
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pszAccount,
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NULL);
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if (hSCService != NULL)
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{
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// Apply the failure action configuration, if any
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if (psfa != NULL)
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{
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// If CreateService succeeded, why would this fail?
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TBOOL(ChangeServiceConfig2(hSCService, SERVICE_CONFIG_FAILURE_ACTIONS, psfa));
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}
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TBOOL(CloseServiceHandle(hSCService));
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dwErrorCode = ERROR_SUCCESS;
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}
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else
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{
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// Blow off ERROR_SERVICE_EXISTS. If in the future the need
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// to change the configuration arises add the code here.
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dwErrorCode = GetLastError();
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if (dwErrorCode == ERROR_SERVICE_EXISTS)
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{
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dwErrorCode = ERROR_SUCCESS;
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// Apply the failure action configuration, if any
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if (psfa != NULL)
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{
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hSCService = OpenService(hSCManager, pszName, SERVICE_ALL_ACCESS);
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if (hSCService != NULL)
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{
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TBOOL(ChangeServiceConfig2(hSCService, SERVICE_CONFIG_FAILURE_ACTIONS, psfa));
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TBOOL(CloseServiceHandle(hSCService));
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}
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}
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}
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}
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TBOOL(CloseServiceHandle(hSCManager));
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}
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else
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{
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dwErrorCode = GetLastError();
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}
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}
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else
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{
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dwErrorCode = GetLastError();
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}
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return(CStatusCode::StatusCodeOfErrorCode(dwErrorCode));
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}
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// --------------------------------------------------------------------------
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// CService:AddServiceDescription
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//
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// Arguments: pszName = Name of service.
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// hInstance = HINSTANCE of module.
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// uiDescriptionID = Resource ID of description.
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//
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// Returns: NTSTATUS
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//
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// Purpose: Reads the string resource from the given location and writes
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// it as the description of the given service in the registry.
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//
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// History: 2000-12-09 vtan created
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// --------------------------------------------------------------------------
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NTSTATUS CService::AddServiceDescription (const TCHAR *pszName, HINSTANCE hInstance, UINT uiDescriptionID)
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{
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LONG lErrorCode;
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TCHAR szKeyName[256];
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CRegKey regKeyService;
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(TCHAR*)lstrcpy(szKeyName, TEXT("SYSTEM\\CurrentControlSet\\Services\\"));
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(TCHAR*)lstrcat(szKeyName, pszName);
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lErrorCode = regKeyService.Open(HKEY_LOCAL_MACHINE,
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szKeyName,
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KEY_SET_VALUE);
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if (ERROR_SUCCESS == lErrorCode)
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{
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TCHAR sz[256];
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if (LoadString(hInstance, uiDescriptionID, sz, ARRAYSIZE(sz)) != 0)
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{
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lErrorCode = regKeyService.SetString(TEXT("Description"), sz);
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}
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else
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{
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lErrorCode = GetLastError();
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}
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}
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return(CStatusCode::StatusCodeOfErrorCode(lErrorCode));
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}
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// --------------------------------------------------------------------------
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// CService:AddServiceParameters
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//
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// Arguments: pszName = Name of service.
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// pszDllName = Name of DLL hosting service.
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//
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// Returns: NTSTATUS
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//
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// Purpose: Adds parameters required for svchost to host this service.
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//
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// History: 2000-12-09 vtan created
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// --------------------------------------------------------------------------
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NTSTATUS CService::AddServiceParameters (const TCHAR *pszName, const TCHAR *pszDllName, const TCHAR *pszServiceMainName)
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{
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LONG lErrorCode;
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TCHAR szKeyName[256];
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CRegKey regKey;
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(TCHAR*)lstrcpy(szKeyName, TEXT("SYSTEM\\CurrentControlSet\\Services\\"));
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(TCHAR*)lstrcat(szKeyName, pszName);
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(TCHAR*)lstrcat(szKeyName, TEXT("\\Parameters"));
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lErrorCode = regKey.Create(HKEY_LOCAL_MACHINE,
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szKeyName,
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REG_OPTION_NON_VOLATILE,
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KEY_SET_VALUE,
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NULL);
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if (ERROR_SUCCESS == lErrorCode)
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{
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TCHAR sz[256];
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(TCHAR*)lstrcpy(sz, TEXT("%SystemRoot%\\System32\\"));
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(TCHAR*)lstrcat(sz, pszDllName);
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lErrorCode = regKey.SetPath(TEXT("ServiceDll"), sz);
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if (ERROR_SUCCESS == lErrorCode)
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{
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if (pszServiceMainName == NULL)
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{
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(TCHAR*)lstrcpy(sz, TEXT("ServiceMain"));
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pszServiceMainName = sz;
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}
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lErrorCode = regKey.SetString(TEXT("ServiceMain"), pszServiceMainName);
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}
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}
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return(CStatusCode::StatusCodeOfErrorCode(lErrorCode));
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}
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// --------------------------------------------------------------------------
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// CService:AddServiceToGroup
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//
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// Arguments: pszName = Name of service.
|
|
// pszSvchostGroup = Group to which the service belongs.
|
|
//
|
|
// Returns: NTSTATUS
|
|
//
|
|
// Purpose: Adds the service as part of the group of services hosted in
|
|
// a single instance of svchost.exe.
|
|
//
|
|
// History: 2000-12-09 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
NTSTATUS CService::AddServiceToGroup (const TCHAR *pszName, const TCHAR *pszSvchostGroup)
|
|
|
|
{
|
|
LONG lErrorCode;
|
|
CRegKey regKey;
|
|
|
|
lErrorCode = regKey.Open(HKEY_LOCAL_MACHINE,
|
|
TEXT("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Svchost"),
|
|
KEY_QUERY_VALUE | KEY_SET_VALUE);
|
|
if (ERROR_SUCCESS == lErrorCode)
|
|
{
|
|
DWORD dwType, dwBaseDataSize, dwDataSize;
|
|
|
|
dwType = dwBaseDataSize = dwDataSize = 0;
|
|
lErrorCode = regKey.QueryValue(pszSvchostGroup,
|
|
&dwType,
|
|
NULL,
|
|
&dwBaseDataSize);
|
|
if ((REG_MULTI_SZ == dwType) && (dwBaseDataSize != 0))
|
|
{
|
|
TCHAR *pszData;
|
|
|
|
dwDataSize = dwBaseDataSize + ((lstrlen(pszName) + sizeof('\0')) * sizeof(TCHAR));
|
|
pszData = static_cast<TCHAR*>(LocalAlloc(LMEM_FIXED, dwDataSize));
|
|
if (pszData != NULL)
|
|
{
|
|
lErrorCode = regKey.QueryValue(pszSvchostGroup,
|
|
NULL,
|
|
pszData,
|
|
&dwBaseDataSize);
|
|
if (ERROR_SUCCESS == lErrorCode)
|
|
{
|
|
if (!StringInMulitpleStringList(pszData, pszName))
|
|
{
|
|
StringInsertInMultipleStringList(pszData, pszName, dwDataSize);
|
|
lErrorCode = regKey.SetValue(pszSvchostGroup,
|
|
dwType,
|
|
pszData,
|
|
dwDataSize);
|
|
}
|
|
else
|
|
{
|
|
lErrorCode = ERROR_SUCCESS;
|
|
}
|
|
}
|
|
(HLOCAL)LocalFree(pszData);
|
|
}
|
|
else
|
|
{
|
|
lErrorCode = ERROR_OUTOFMEMORY;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
lErrorCode = ERROR_INVALID_DATA;
|
|
}
|
|
}
|
|
return(CStatusCode::StatusCodeOfErrorCode(lErrorCode));
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CService:StringInMulitpleStringList
|
|
//
|
|
// Arguments: pszStringList = String list to search.
|
|
// pszString = String to search for.
|
|
//
|
|
// Returns: bool
|
|
//
|
|
// Purpose: Searches the REG_MULTI_SZ string list looking for matches.
|
|
//
|
|
// History: 2000-12-01 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
bool CService::StringInMulitpleStringList (const TCHAR *pszStringList, const TCHAR *pszString)
|
|
|
|
{
|
|
bool fFound;
|
|
|
|
fFound = false;
|
|
while (!fFound && (pszStringList[0] != TEXT('\0')))
|
|
{
|
|
fFound = (lstrcmpi(pszStringList, pszString) == 0);
|
|
if (!fFound)
|
|
{
|
|
pszStringList += (lstrlen(pszStringList) + sizeof('\0'));
|
|
}
|
|
}
|
|
return(fFound);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CService:StringInsertInMultipleStringList
|
|
//
|
|
// Arguments: pszStringList = String list to insert string in.
|
|
// pszString = String to insert.
|
|
// dwStringListSize = Byte count of string list.
|
|
//
|
|
// Returns: bool
|
|
//
|
|
// Purpose: Inserts the given string into the multiple string list in
|
|
// the first alphabetical position encountered. If the list is
|
|
// kept alphabetical then this preserves it.
|
|
//
|
|
// History: 2000-12-02 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
void CService::StringInsertInMultipleStringList (TCHAR *pszStringList, const TCHAR *pszString, DWORD dwStringListSize)
|
|
|
|
{
|
|
int iResult, iSize;
|
|
TCHAR *pszFirstString, *pszLastString;
|
|
|
|
pszFirstString = pszLastString = pszStringList;
|
|
iSize = lstrlen(pszString) + sizeof('\0');
|
|
iResult = -1;
|
|
while ((iResult < 0) && (pszStringList[0] != TEXT('\0')))
|
|
{
|
|
pszLastString = pszStringList;
|
|
iResult = lstrcmpi(pszStringList, pszString);
|
|
ASSERTMSG(iResult != 0, "Found exact match in StringInsertInMultipleStringList");
|
|
pszStringList += (lstrlen(pszStringList) + sizeof('\0'));
|
|
}
|
|
if (iResult < 0)
|
|
{
|
|
pszLastString = pszStringList;
|
|
}
|
|
MoveMemory(pszLastString + iSize, pszLastString, dwStringListSize - ((pszLastString - pszFirstString) * sizeof(TCHAR)) - (iSize * sizeof(TCHAR)));
|
|
(TCHAR*)lstrcpy(pszLastString, pszString);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CServiceWorkItem::CServiceWorkItem
|
|
//
|
|
// Arguments: pServerAPI = CServerAPI to use.
|
|
//
|
|
// Returns: <none>
|
|
//
|
|
// Purpose: Constructor for CServiceWorkItem.
|
|
//
|
|
// History: 2000-11-29 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
CServiceWorkItem::CServiceWorkItem (CServerAPI *pServerAPI) :
|
|
_pServerAPI(pServerAPI)
|
|
|
|
{
|
|
pServerAPI->AddRef();
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CServiceWorkItem::~CServiceWorkItem
|
|
//
|
|
// Arguments: <none>
|
|
//
|
|
// Returns: <none>
|
|
//
|
|
// Purpose: Destructor for CServiceWorkItem. Release resources used.
|
|
//
|
|
// History: 2000-11-29 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
CServiceWorkItem::~CServiceWorkItem (void)
|
|
|
|
{
|
|
_pServerAPI->Release();
|
|
_pServerAPI = NULL;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CServiceWorkItem::Entry
|
|
//
|
|
// Arguments: <none>
|
|
//
|
|
// Returns: <none>
|
|
//
|
|
// Purpose: Executes work item request (stop the server).
|
|
//
|
|
// History: 2000-11-29 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
void CServiceWorkItem::Entry (void)
|
|
|
|
{
|
|
TSTATUS(_pServerAPI->Stop());
|
|
}
|
|
|