Leaked source code of windows server 2003
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// --------------------------------------------------------------------------
// Module Name: Service.cpp
//
// Copyright (c) 2000, Microsoft Corporation
//
// This file contains a class that implements generic portions of a Win32
// serivce.
//
// History: 2000-11-29 vtan created
// --------------------------------------------------------------------------
#include "StandardHeader.h"
#define STRSAFE_LIB
#include <strsafe.h>
#include "Service.h"
#include "RegistryResources.h"
#include "StatusCode.h"
// --------------------------------------------------------------------------
// CService::CService
//
// Arguments: pAPIConnection = CAPIConnection used to implement service.
// pServerAPI = CServerAPI used to stop service.
// pszServiceName = Name of service.
//
// Returns: <none>
//
// Purpose: Constructor for CService.
//
// History: 2000-11-29 vtan created
// --------------------------------------------------------------------------
CService::CService (CAPIConnection *pAPIConnection, CServerAPI *pServerAPI, const TCHAR *pszServiceName) :
_hService(NULL),
_pszServiceName(pszServiceName),
_pAPIConnection(pAPIConnection),
_pServerAPI(pServerAPI),
_pAPIDispatchSync(NULL)
{
CopyMemory(_szTag, CSVC_TAG, CB_CSVC_TAG);
ZeroMemory(&_serviceStatus, sizeof(_serviceStatus));
pAPIConnection->AddRef();
pServerAPI->AddRef();
}
// --------------------------------------------------------------------------
// CService::~CService
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: Destructor for CService. Release used resources.
//
// History: 2000-11-29 vtan created
// --------------------------------------------------------------------------
CService::~CService (void)
{
CopyMemory(_szTag, DEAD_CSVC_TAG, CB_CSVC_TAG);
_pServerAPI->Release();
_pServerAPI = NULL;
_pAPIConnection->Release();
_pAPIConnection = NULL;
delete _pAPIDispatchSync;
_pAPIDispatchSync = NULL;
ASSERTMSG(_hService == NULL, "_hService should be released in CService::~CService");
}
// --------------------------------------------------------------------------
// CService::IsValid
//
// Arguments: address of CService instance
//
// Returns: <none>
//
// Purpose: Reports whether the specified address points to a valid
// CService object.
//
// Found that there are cases when SCM launches a thread to
// interrogate the service (SERVICE_CONTROL_INTERROGATE) when
// trying to restart a CService who has already been deleted, but
// whose status has not yet gone from STOP_PENDING to STOPPED.
//
// This is unavoidable because SCM will dump the service process once
// STOPPED, not giving us a chance to delete the CService. Thus
// we assign STOPPED as late as possible.
//
// History: 2002-03-21 scotthan created
// --------------------------------------------------------------------------
BOOL CService::IsValid(CService* pService)
{
return pService ?
(0 == memcmp(pService->_szTag, CSVC_TAG, CB_CSVC_TAG)) :
FALSE;
}
// --------------------------------------------------------------------------
// CService::Start
//
// Arguments: <none>
//
// Returns: <none>
//
// Purpose: Called from ServiceMain of the service. This registers the
// handler and starts the service (listens to the API port).
// When the listen call returns it sets the status of the service
// as stopped and exits.
//
// History: 2000-11-29 vtan created
// 2002-03-21 scotthan add robustness.
// --------------------------------------------------------------------------
void CService::Start (void)
{
AddRef(); // defensive addref
_hService = RegisterServiceCtrlHandlerEx(_pszServiceName, CB_HandlerEx, this);
if (_hService != NULL)
{
NTSTATUS status;
BOOL fExit = FALSE;
ASSERTMSG(_pAPIDispatchSync == NULL, "CService::Start - _pAPIDispatchSync != NULL: reentered before shutdown\n");
_pAPIDispatchSync = new CAPIDispatchSync;
if( _pAPIDispatchSync != NULL )
{
_serviceStatus.dwServiceType = SERVICE_WIN32_SHARE_PROCESS;
_serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
_serviceStatus.dwWin32ExitCode = NO_ERROR;
_serviceStatus.dwCheckPoint = 0;
_serviceStatus.dwWaitHint = 0;
TSTATUS(SignalStartStop(TRUE));
// Add a reference for the HandlerEx callback. When the handler receives
// a stop code it will release its reference.
AddRef();
_serviceStatus.dwCurrentState = SERVICE_RUNNING;
TBOOL(_SetServiceStatus(_hService, &_serviceStatus, this));
status = _pAPIConnection->Listen(_pAPIDispatchSync);
if( CAPIDispatchSync::WaitForServiceControlStop(
_pAPIDispatchSync, DISPATCHSYNC_TIMEOUT) != WAIT_TIMEOUT )
{
fExit = TRUE;
}
else
{
_serviceStatus.dwCurrentState = SERVICE_STOPPED;
_serviceStatus.dwWin32ExitCode = ERROR_TIMEOUT;
DISPLAYMSG("CService::Start - Timed out waiting for SERVICE_CONTROL_STOP/SHUTDOWN.");
TBOOL(_SetServiceStatus(_hService, &_serviceStatus, this));
}
}
else
{
_serviceStatus.dwCurrentState = SERVICE_STOPPED;
_serviceStatus.dwWin32ExitCode = ERROR_OUTOFMEMORY;
TBOOL(_SetServiceStatus(_hService, &_serviceStatus, this));
}
}
Release(); // defensive addref
}
// --------------------------------------------------------------------------
// CService::Install
//
// Arguments: pszName = Name of the service.
// pszImage = Executable image of the service.
// pszGroup = Group to which the service belongs.
// pszAccount = Account under which the service runs.
// pszDllName = Name of the hosting dll.
// pszDependencies = Any dependencies the service has.
// pszSvchostGroup = The svchost group.
// dwStartType = Start type of the service.
// hInstance = HINSTANCE for resources.
// uiDisplayNameID = Resource ID of the display name.
// uiDescriptionID = Resource ID of the description.
//
// Returns: NTSTATUS
//
// Purpose: Use the service control manager to create the service. Add
// additional information that CreateService does not allow us to
// directly specify and add additional information that is
// required to run in svchost.exe as a shared service process.
//
// History: 2000-11-29 vtan created
// --------------------------------------------------------------------------
NTSTATUS CService::Install (const TCHAR *pszName,
const TCHAR *pszImage,
const TCHAR *pszGroup,
const TCHAR *pszAccount,
const TCHAR *pszDllName,
const TCHAR *pszDependencies,
const TCHAR *pszSvchostGroup,
const TCHAR *pszServiceMainName,
DWORD dwStartType,
HINSTANCE hInstance,
UINT uiDisplayNameID,
UINT uiDescriptionID,
SERVICE_FAILURE_ACTIONS *psfa)
{
NTSTATUS status;
status = AddService(pszName, pszImage, pszGroup, pszAccount, pszDependencies, dwStartType, hInstance, uiDisplayNameID, psfa);
if (NT_SUCCESS(status))
{
status = AddServiceDescription(pszName, hInstance, uiDescriptionID);
if (NT_SUCCESS(status))
{
status = AddServiceParameters(pszName, pszDllName, pszServiceMainName);
if (NT_SUCCESS(status))
{
status = AddServiceToGroup(pszName, pszSvchostGroup);
}
}
}
if (!NT_SUCCESS(status))
{
TSTATUS(Remove(pszName));
}
return(status);
}
// --------------------------------------------------------------------------
// CService::Remove
//
// Arguments: pszName = Name of service to remove.
//
// Returns: NTSTATUS
//
// Purpose: Use the service control manager to delete the service. This
// doesn't clean up the turds left for svchost usage.
//
// History: 2000-11-29 vtan created
// --------------------------------------------------------------------------
NTSTATUS CService::Remove (const TCHAR *pszName)
{
NTSTATUS status;
SC_HANDLE hSCManager;
hSCManager = OpenSCManager(NULL, NULL, SC_MANAGER_CREATE_SERVICE);
if (hSCManager != NULL)
{
SC_HANDLE hSCService;
hSCService = OpenService(hSCManager, pszName, DELETE);
if (hSCService != NULL)
{
if (DeleteService(hSCService) != FALSE)
{
status = STATUS_SUCCESS;
}
else
{
status = CStatusCode::StatusCodeOfLastError();
}
TBOOL(CloseServiceHandle(hSCService));
}
else
{
status = CStatusCode::StatusCodeOfLastError();
}
TBOOL(CloseServiceHandle(hSCManager));
}
else
{
status = CStatusCode::StatusCodeOfLastError();
}
return(status);
}
// --------------------------------------------------------------------------
// CService::SignalStartStop
//
// Arguments: BOOL fStart
//
// Returns: NTSTATUS
//
// Purpose: Base class implementation of signal service started function.
// MUST BE INVOKED BY CHILD OVERRIDE!
//
// History: 2000-11-29 vtan created
// 2002-03-11 scotthan renamed to 'SignalStartStop' from 'Signal',
// added boolean arg,
// 2002-03-24 scotthan added firing of 'stopping'notification
// --------------------------------------------------------------------------
NTSTATUS CService::SignalStartStop (BOOL fStart)
{
if( !fStart )
{
CAPIDispatchSync::SignalServiceStopping(_pAPIDispatchSync);
}
return(STATUS_SUCCESS);
}
// --------------------------------------------------------------------------
// Default return codes for SCM control requests
typedef struct
{
DWORD dwControl;
DWORD dwRet;
} SERVICE_CONTROL_RETURN;
const SERVICE_CONTROL_RETURN _rgDefaultControlRet[] =
{
{ SERVICE_CONTROL_STOP, NO_ERROR},
{ SERVICE_CONTROL_SHUTDOWN, NO_ERROR},
{ SERVICE_CONTROL_INTERROGATE, NO_ERROR},
{ SERVICE_CONTROL_PAUSE, ERROR_CALL_NOT_IMPLEMENTED},
{ SERVICE_CONTROL_CONTINUE, ERROR_CALL_NOT_IMPLEMENTED},
{ SERVICE_CONTROL_PARAMCHANGE, ERROR_CALL_NOT_IMPLEMENTED},
{ SERVICE_CONTROL_NETBINDADD, ERROR_CALL_NOT_IMPLEMENTED},
{ SERVICE_CONTROL_NETBINDREMOVE, ERROR_CALL_NOT_IMPLEMENTED},
{ SERVICE_CONTROL_NETBINDENABLE, ERROR_CALL_NOT_IMPLEMENTED},
{ SERVICE_CONTROL_NETBINDDISABLE, ERROR_CALL_NOT_IMPLEMENTED},
{ SERVICE_CONTROL_DEVICEEVENT, ERROR_CALL_NOT_IMPLEMENTED},
{ SERVICE_CONTROL_HARDWAREPROFILECHANGE, ERROR_CALL_NOT_IMPLEMENTED},
{ SERVICE_CONTROL_POWEREVENT, ERROR_CALL_NOT_IMPLEMENTED},
};
// --------------------------------------------------------------------------
DWORD _GetDefaultControlRet(DWORD dwControl)
{
for(int i = 0; i < ARRAYSIZE(_rgDefaultControlRet); i++)
{
if( dwControl == _rgDefaultControlRet[i].dwControl )
return _rgDefaultControlRet[i].dwRet;
}
DISPLAYMSG("Unknown service control code passed to CService::CB_HandlerEx");
return ERROR_CALL_NOT_IMPLEMENTED;
}
// --------------------------------------------------------------------------
// CService::HandlerEx
//
// Arguments: dwControl = Control code from service control manager.
//
// Returns: DWORD
//
// Purpose: HandlerEx function for the service. The base class implements
// most of the useful things that the service will want to do.
// It's declared virtual in case overriding is required.
//
// History: 2000-11-29 vtan created
// 2002-03-21 scotthan Make shutdown more robust.
// --------------------------------------------------------------------------
DWORD CService::HandlerEx (DWORD dwControl)
{
DWORD dwErrorCode = _GetDefaultControlRet(dwControl);
SERVICE_STATUS_HANDLE hService = _hService;
if( hService != NULL )
{
switch (dwControl)
{
case SERVICE_CONTROL_STOP:
case SERVICE_CONTROL_SHUTDOWN:
{
// In the stop/shutdown case, we do the following:
// (1) respond to the message by setting the status to SERVICE_STOP_PENDING.
// (2) Signal to all blocking LPC request handler threads that the service
// is coming down. This should cause them to terminate gracefully and
// come home.
// (3) Send an API_GENERIC_STOP request down the LPC port, telling it to quit.
// (this call can only succeed if it comes from within this process.)
// (4) Wait until the port finishes shutting down.
// (5) Signal to ServiceMain that the SERVICE_CONTROL_STOP/SHUTDOWN has completed.
// (6) ServiceMain exits.
// Step (1): update status to SERVICE_STOP_PENDING.
_serviceStatus.dwCurrentState = SERVICE_STOP_PENDING;
TBOOL(_SetServiceStatus(hService, &_serviceStatus, this));
// Step (2): Call home any waiting LPC request handler threads
SignalStartStop(FALSE);
// Step (3) Send an API_GENERIC_STOP LPC request to stop listening on
// the port (this will immediately release ServiceMain,
// who in turn needs to wait until we're completely finished here before exiting.)
NTSTATUS status;
TSTATUS((status = _pServerAPI->Stop()));
if( NT_SUCCESS(status) )
{
// Step (4): Wait until the API_GENERIC_STOP is finished.
if( CAPIDispatchSync::WaitForPortShutdown(
_pAPIDispatchSync, DISPATCHSYNC_TIMEOUT) != WAIT_TIMEOUT )
{
_serviceStatus.dwCurrentState = SERVICE_STOPPED;
_serviceStatus.dwWin32ExitCode = CStatusCode::ErrorCodeOfStatusCode(status);
TBOOL(_SetServiceStatus(_hService, &_serviceStatus, this));
_hService = hService = NULL;
// Release reference on ourselves.
// The matching AddRef occurs in CService::Start.
Release();
}
else
{
dwErrorCode = ERROR_TIMEOUT;
DISPLAYMSG("CService::HandlerEx - Timed out waiting for port shutdown.");
}
}
else
{
_serviceStatus.dwCurrentState = SERVICE_RUNNING;
TBOOL(_SetServiceStatus(hService, &_serviceStatus, this));
dwErrorCode = CStatusCode::ErrorCodeOfStatusCode(status);
}
// Step (5): signal to ServiceMain that SERVICE_CONTROL_STOP/SHUTDOWN
// has completed; now he's safe to exit.
CAPIDispatchSync::SignalServiceControlStop(_pAPIDispatchSync);
break;
}
default:
{
// Report current status:
TBOOL(_SetServiceStatus(hService, &_serviceStatus, this));
break;
}
}
}
return(dwErrorCode);
}
// --------------------------------------------------------------------------
// CService::CB_HandlerEx
//
// Arguments: See the platform SDK under HandlerEx.
//
// Returns: DWORD
//
// Purpose: Static function stub to call into the class.
//
// History: 2000-11-29 vtan created
// 2002-03-21 scotthan Add robustness.
// --------------------------------------------------------------------------
DWORD WINAPI CService::CB_HandlerEx (DWORD dwControl, DWORD dwEventType, LPVOID lpEventData, LPVOID lpContext)
{
UNREFERENCED_PARAMETER(dwEventType);
UNREFERENCED_PARAMETER(lpEventData);
DWORD dwRet = ERROR_SUCCESS;
CService* pService = reinterpret_cast<CService*>(lpContext);
DEBUG_TRY();
if( CService::IsValid(pService) )
{
pService->AddRef(); // purely defensive; not until we call SetServiceStatus(SERVICE_STOPPED)
// will SCM stop calling into us via HandlerEx, so we need to ensure we stay alive.
dwRet = pService->HandlerEx(dwControl);
pService->Release(); // remove defensive AddRef().
}
else
{
DISPLAYMSG("CService::CB_HandlerEx - Warning: SCM control entrypoint invoked vs. invalid CService instance");
dwRet = _GetDefaultControlRet(dwControl);
}
DEBUG_EXCEPT("Breaking in CService::CB_HandlerEx exception handler");
return dwRet;
}
// --------------------------------------------------------------------------
// CService:AddService
//
// Arguments: pszName = Name of the service.
// pszImage = Executable image of the service.
// pszGroup = Group to which the service belongs.
// pszAccount = Account under which the service runs.
// pszDependencies = Any dependencies the service has.
// dwStartType = Start type of the service.
// hInstance = HINSTANCE for resources.
// uiDisplayNameID = Resource ID of the display name.
//
// Returns: NTSTATUS
//
// Purpose: Uses the service control manager to create the service and add
// it into the database.
//
// History: 2000-12-09 vtan created
// --------------------------------------------------------------------------
NTSTATUS CService::AddService (const TCHAR *pszName,
const TCHAR *pszImage,
const TCHAR *pszGroup,
const TCHAR *pszAccount,
const TCHAR *pszDependencies,
DWORD dwStartType,
HINSTANCE hInstance,
UINT uiDisplayNameID,
SERVICE_FAILURE_ACTIONS *psfa)
{
DWORD dwErrorCode;
SC_HANDLE hSCManager;
hSCManager = OpenSCManager(NULL, NULL, SC_MANAGER_CREATE_SERVICE);
if (hSCManager != NULL)
{
TCHAR sz[256];
if (LoadString(hInstance, uiDisplayNameID, sz, ARRAYSIZE(sz)) != 0)
{
SC_HANDLE hSCService;
hSCService = CreateService(hSCManager,
pszName,
sz,
SERVICE_ALL_ACCESS,
SERVICE_WIN32_SHARE_PROCESS,
dwStartType,
SERVICE_ERROR_NORMAL,
pszImage,
pszGroup,
NULL,
pszDependencies,
pszAccount,
NULL);
if (hSCService != NULL)
{
// Apply the failure action configuration, if any
if (psfa != NULL)
{
// If CreateService succeeded, why would this fail?
TBOOL(ChangeServiceConfig2(hSCService, SERVICE_CONFIG_FAILURE_ACTIONS, psfa));
}
TBOOL(CloseServiceHandle(hSCService));
dwErrorCode = ERROR_SUCCESS;
}
else
{
// Blow off ERROR_SERVICE_EXISTS. If in the future the need
// to change the configuration arises add the code here.
dwErrorCode = GetLastError();
if (dwErrorCode == ERROR_SERVICE_EXISTS)
{
dwErrorCode = ERROR_SUCCESS;
// Update service information for upgrade cases
hSCService = OpenService(hSCManager, pszName, SERVICE_ALL_ACCESS);
if (hSCService != NULL)
{
// Update the start type
TBOOL(ChangeServiceConfig(hSCService,
SERVICE_NO_CHANGE, // dwServiceType
dwStartType,
SERVICE_NO_CHANGE, // dwErrorControl
NULL, // lpBinaryPathName
NULL, // lpLoadOrderGroup
NULL, // lpdwTagId
NULL, // lpDependencies
NULL, // lpServiceStartName
NULL, // lpPassword
NULL // lpDisplayName
));
// Apply the failure action configuration, if any
if (psfa != NULL)
{
TBOOL(ChangeServiceConfig2(hSCService, SERVICE_CONFIG_FAILURE_ACTIONS, psfa));
}
TBOOL(CloseServiceHandle(hSCService));
}
}
}
TBOOL(CloseServiceHandle(hSCManager));
}
else
{
dwErrorCode = GetLastError();
}
}
else
{
dwErrorCode = GetLastError();
}
return(CStatusCode::StatusCodeOfErrorCode(dwErrorCode));
}
// --------------------------------------------------------------------------
// CService:AddServiceDescription
//
// Arguments: pszName = Name of service.
// hInstance = HINSTANCE of module.
// uiDescriptionID = Resource ID of description.
//
// Returns: NTSTATUS
//
// Purpose: Reads the string resource from the given location and writes
// it as the description of the given service in the registry.
//
// History: 2000-12-09 vtan created
// --------------------------------------------------------------------------
NTSTATUS CService::AddServiceDescription (const TCHAR *pszName, HINSTANCE hInstance, UINT uiDescriptionID)
{
LONG lErrorCode;
TCHAR szKeyName[256];
CRegKey regKeyService;
if (!pszName || !pszName[0])
{
lErrorCode = ERROR_INVALID_PARAMETER;
}
else
{
StringCchCopy(szKeyName, ARRAYSIZE(szKeyName), TEXT("SYSTEM\\CurrentControlSet\\Services\\"));
StringCchCatN(szKeyName, ARRAYSIZE(szKeyName), pszName, (ARRAYSIZE(szKeyName) - 1) - lstrlen(szKeyName));
lErrorCode = regKeyService.Open(HKEY_LOCAL_MACHINE,
szKeyName,
KEY_SET_VALUE);
if (ERROR_SUCCESS == lErrorCode)
{
TCHAR sz[256];
if (LoadString(hInstance, uiDescriptionID, sz, ARRAYSIZE(sz)) != 0)
{
lErrorCode = regKeyService.SetString(TEXT("Description"), sz);
}
else
{
lErrorCode = GetLastError();
}
}
}
return CStatusCode::StatusCodeOfErrorCode(lErrorCode);
}
// --------------------------------------------------------------------------
// CService:AddServiceParameters
//
// Arguments: pszName = Name of service.
// pszDllName = Name of DLL hosting service.
//
// Returns: NTSTATUS
//
// Purpose: Adds parameters required for svchost to host this service.
//
// History: 2000-12-09 vtan created
// --------------------------------------------------------------------------
NTSTATUS CService::AddServiceParameters (const TCHAR* pszName, const TCHAR* pszDllName, const TCHAR* pszServiceMainName)
{
LONG lErrorCode;
TCHAR szKeyName[256];
CRegKey regKey;
// we handle a null pszServiceMainName
if (!pszName || !pszName[0] ||
!pszDllName || !pszDllName[0])
{
lErrorCode = ERROR_INVALID_PARAMETER;
}
else
{
StringCchCopy(szKeyName, ARRAYSIZE(szKeyName), TEXT("SYSTEM\\CurrentControlSet\\Services\\"));
StringCchCatN(szKeyName, ARRAYSIZE(szKeyName), pszName, (ARRAYSIZE(szKeyName) - 1) - lstrlen(szKeyName));
StringCchCatN(szKeyName, ARRAYSIZE(szKeyName), TEXT("\\Parameters"), (ARRAYSIZE(szKeyName) - 1) - lstrlen(szKeyName));
lErrorCode = regKey.Create(HKEY_LOCAL_MACHINE,
szKeyName,
REG_OPTION_NON_VOLATILE,
KEY_SET_VALUE,
NULL);
if (ERROR_SUCCESS == lErrorCode)
{
TCHAR sz[256];
StringCchCopy(sz, ARRAYSIZE(sz), TEXT("%SystemRoot%\\System32\\"));
StringCchCatN(sz, ARRAYSIZE(sz), pszDllName, (ARRAYSIZE(sz) - 1) - lstrlen(sz));
lErrorCode = regKey.SetPath(TEXT("ServiceDll"), sz);
if (ERROR_SUCCESS == lErrorCode)
{
if (!pszServiceMainName || !pszServiceMainName[0])
{
StringCchCopy(sz, ARRAYSIZE(sz), TEXT("ServiceMain"));
pszServiceMainName = sz;
}
lErrorCode = regKey.SetString(TEXT("ServiceMain"), pszServiceMainName);
}
}
}
return CStatusCode::StatusCodeOfErrorCode(lErrorCode);
}
// --------------------------------------------------------------------------
// CService:AddServiceToGroup
//
// 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) + 1) * 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 (*(pszData + (dwBaseDataSize / sizeof(TCHAR)) - 1) == L'\0')
{
if (!StringInMulitpleStringList(pszData, pszName))
{
StringInsertInMultipleStringList(pszData, pszName, dwDataSize);
lErrorCode = regKey.SetValue(pszSvchostGroup,
dwType,
pszData,
dwDataSize);
}
}
else
{
lErrorCode = ERROR_INVALID_DATA;
}
}
(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) + 1);
}
}
return(fFound);
}
// --------------------------------------------------------------------------
// CService:StringInsertInMultipleStringList
//
// Arguments: pszStringList = String list to insert string in.
// pszString = String to insert.
// cbStringListSize = 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 cbStringListSize)
{
int iResult, cchSize;
TCHAR *pszFirstString, *pszLastString;
pszFirstString = pszLastString = pszStringList;
cchSize = lstrlen(pszString) + 1;
iResult = -1;
while ((iResult < 0) && (pszStringList[0] != TEXT('\0')))
{
pszLastString = pszStringList;
iResult = lstrcmpi(pszStringList, pszString);
ASSERTMSG(iResult != 0, "Found exact match in StringInsertInMultipleStringList");
// 1 is for the '\0' terminator
pszStringList += (lstrlen(pszStringList) + 1);
}
if (iResult < 0)
{
pszLastString = pszStringList;
}
int cbLenToMove = cbStringListSize - (int(pszLastString - pszFirstString) * sizeof(TCHAR)) - (cchSize * sizeof(TCHAR));
if (cbLenToMove > 0) // Means that pszLastString + cchSize < pszFirstString + cbStringListSize
{
MoveMemory(pszLastString + cchSize, pszLastString, cbLenToMove);
StringCchCopy(pszLastString, cchSize, 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());
}