WindowsXP-SP1/enduser/netmeeting/srvc/service.cpp
2020-09-30 16:53:49 +02:00

821 lines
23 KiB
C++

//
// Copyright (C) 1993-1997 Microsoft Corporation. All Rights Reserved.
//
// MODULE: service.c
//
// PURPOSE: Implements functions required by all services
// windows.
//
// FUNCTIONS:
// main(int argc, char **argv);
// NTmain(int argc, char **argv);
// W95main(int argc, char **argv);
// service_ctrl(DWORD dwCtrlCode);
// service_main(DWORD dwArgc, LPTSTR *lpszArgv);
// CmdInstallService();
// CmdRemoveService();
// CmdDebugService(int argc, char **argv); // DEBUG only
// ControlHandler ( DWORD dwCtrlType ); // DEBUG only
// GetLastErrorText( LPTSTR lpszBuf, DWORD dwSize ); // DEBUG only
//
// COMMENTS:
//
// AUTHOR: Claus Giloi (based on SDK sample)
//
#include "precomp.h"
#ifndef DEBUG
#undef _tprintf
#define _tprintf force_compile_error
#endif // !DEBUG
// internal variables
SERVICE_STATUS ssStatus; // current status of the service
SERVICE_STATUS_HANDLE sshStatusHandle;
DWORD dwErr = 0;
OSVERSIONINFO g_osvi; // The os version info structure global
BOOL g_fInShutdown = FALSE;
// internal function prototypes
VOID WINAPI service_ctrl(DWORD dwCtrlCode);
VOID WINAPI service_main(DWORD dwArgc, LPTSTR *lpszArgv);
VOID CmdInstallService();
VOID CmdRemoveService();
void __cdecl NTmain(int argc, char **argv);
void __cdecl W95main(int argc, char **argv);
// Debug only functionality
#ifdef DEBUG
TCHAR szErr[256];
BOOL bDebug = FALSE;
VOID CmdDebugService(int argc, char **argv);
BOOL WINAPI ControlHandler ( DWORD dwCtrlType );
LPTSTR GetLastErrorText( LPTSTR lpszBuf, DWORD dwSize );
extern BOOL InitDebugMemoryOptions(void);
extern VOID DumpMemoryLeaksAndBreak(void);
#endif // DEBUG
typedef BOOL (WINAPI *PFNCHANGESERVICECONFIG2)(SC_HANDLE, DWORD, LPVOID);
//
// FUNCTION: main
//
// PURPOSE: entrypoint for service
//
// PARAMETERS:
// argc - number of command line arguments
// argv - array of command line arguments
//
// RETURN VALUE:
// none
//
// COMMENTS:
// Get Platform type and
// call appropriate main for platform (NT or Win95)
//
void __cdecl main(int argc, char **argv)
{
#ifdef DEBUG
InitDebugMemoryOptions();
#endif // DEBUG
// Store OS version info
g_osvi.dwOSVersionInfoSize = sizeof(g_osvi);
if (FALSE == ::GetVersionEx(&g_osvi))
{
ERROR_OUT(("GetVersionEx() failed!"));
return;
}
RegEntry rePol(POLICIES_KEY, HKEY_LOCAL_MACHINE);
if ( rePol.GetNumber( REGVAL_POL_NO_RDS, DEFAULT_POL_NO_RDS) )
{
WARNING_OUT(("RDS launch prevented by policy"));
return;
}
if ( IS_NT )
{
NTmain( argc, argv );
}
else
{
W95main( argc, argv );
}
#ifdef DEBUG
DumpMemoryLeaksAndBreak();
#endif // DEBUG
}
//
// FUNCTION: NTmain
//
// PURPOSE: entrypoint for service
//
// PARAMETERS:
// argc - number of command line arguments
// argv - array of command line arguments
//
// RETURN VALUE:
// none
//
// COMMENTS:
// NTmain() either performs the command line task, or
// call StartServiceCtrlDispatcher to register the
// main service thread. When the this call returns,
// the service has stopped, so exit.
//
void __cdecl NTmain(int argc, char **argv)
{
SERVICE_TABLE_ENTRY dispatchTable[] =
{
{ TEXT(SZSERVICENAME), (LPSERVICE_MAIN_FUNCTION)service_main },
{ NULL, NULL }
};
if ( (argc > 1) &&
((*argv[1] == '-') || (*argv[1] == '/')) )
{
if ( lstrcmpi( "install", argv[1]+1 ) == 0 )
{
CmdInstallService();
}
else if ( lstrcmpi( "remove", argv[1]+1 ) == 0 )
{
CmdRemoveService();
}
#ifdef DEBUG
else if ( lstrcmpi( "debug", argv[1]+1 ) == 0 )
{
bDebug = TRUE;
CmdDebugService(argc, argv);
}
#endif // DEBUG
else
{
goto dispatch;
}
exit(0);
}
// if it doesn't match any of the above parameters
// the service control manager may be starting the service
// so we must call StartServiceCtrlDispatcher
dispatch:
#ifdef DEBUG
// this is just to be friendly
printf( "%s -install to install the service\n", SZAPPNAME );
printf( "%s -remove to remove the service\n", SZAPPNAME );
printf( "%s -debug <params> to run as a console app for debugging\n", SZAPPNAME );
printf( "\nStartServiceCtrlDispatcher being called.\n" );
printf( "This may take several seconds. Please wait.\n" );
#endif // DEBUG
if (!StartServiceCtrlDispatcher(dispatchTable)) {
AddToMessageLog(EVENTLOG_ERROR_TYPE,
0,
MSG_ERR_SERVICE,
TEXT("StartServiceCtrlDispatcher failed."));
}
}
//
// FUNCTION: W95main
//
// PURPOSE: entrypoint for pseudo-service on Win95
//
// PARAMETERS:
// argc - number of command line arguments
// argv - array of command line arguments
//
// RETURN VALUE:
// none
//
// COMMENTS:
// W95main() registers as Win95 service and calls Init routine directly
//
typedef DWORD (WINAPI * REGISTERSERVICEPROC)(DWORD, DWORD);
#ifndef RSP_SIMPLE_SERVICE
#define RSP_SIMPLE_SERVICE 0x00000001
#endif
void __cdecl W95main(int argc, char **argv)
{
HMODULE hKernel;
REGISTERSERVICEPROC lpfnRegisterServiceProcess;
HANDLE hServiceEvent = OpenEvent(EVENT_ALL_ACCESS, FALSE, SERVICE_PAUSE_EVENT);
if (hServiceEvent != NULL) // Service is already running
{
return;
}
if ( hKernel = GetModuleHandle("KERNEL32.DLL") )
{
if ( lpfnRegisterServiceProcess =
(REGISTERSERVICEPROC)GetProcAddress ( hKernel,
"RegisterServiceProcess" ))
{
if (!lpfnRegisterServiceProcess(NULL, RSP_SIMPLE_SERVICE))
{
ERROR_OUT(("RegisterServiceProcess failed"));
}
}
else
{
ERROR_OUT(("GetProcAddr of RegisterServiceProcess failed"));
}
}
else
{
ERROR_OUT(("GetModuleHandle of KERNEL32.DLL failed"));
}
MNMServiceStart(argc, argv);
CloseHandle(hServiceEvent);
}
//
// FUNCTION: service_main
//
// PURPOSE: To perform actual initialization of the service
//
// PARAMETERS:
// dwArgc - number of command line arguments
// lpszArgv - array of command line arguments
//
// RETURN VALUE:
// none
//
// COMMENTS:
// This routine performs the service initialization and then calls
// the user defined MNMServiceStart() routine to perform majority
// of the work.
//
void WINAPI service_main(DWORD dwArgc, LPTSTR *lpszArgv)
{
// register our service control handler:
//
sshStatusHandle = RegisterServiceCtrlHandler( TEXT(SZSERVICENAME), service_ctrl);
if (!sshStatusHandle)
goto cleanup;
// SERVICE_STATUS members that don't change
//
ssStatus.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
ssStatus.dwServiceSpecificExitCode = 0;
TRACE_OUT(("starting service\n\r"));
MNMServiceStart( dwArgc, lpszArgv );
cleanup:
return;
}
//
// FUNCTION: service_ctrl
//
// PURPOSE: This function is called by the SCM whenever
// ControlService() is called on this service.
//
// PARAMETERS:
// dwCtrlCode - type of control requested
//
// RETURN VALUE:
// none
//
// COMMENTS:
//
VOID WINAPI service_ctrl(DWORD dwCtrlCode)
{
// Handle the requested control code.
//
switch(dwCtrlCode)
{
// Stop the service.
//
// SERVICE_STOP_PENDING should be reported before
// setting the Stop Event - hServerStopEvent - in
// MNMServiceStop(). This avoids a race condition
// which may result in a 1053 - The Service did not respond...
// error.
case SERVICE_CONTROL_STOP:
ReportStatusToSCMgr(SERVICE_STOP_PENDING, NO_ERROR, 30000);
MNMServiceStop();
return;
case SERVICE_CONTROL_SHUTDOWN:
g_fInShutdown = TRUE;
break;
// Update the service status.
//
case SERVICE_CONTROL_INTERROGATE:
break;
case SERVICE_CONTROL_PAUSE:
ReportStatusToSCMgr(SERVICE_PAUSE_PENDING, NO_ERROR, 30000);
MNMServicePause();
return;
case SERVICE_CONTROL_CONTINUE:
ReportStatusToSCMgr(SERVICE_CONTINUE_PENDING, NO_ERROR, 30000);
MNMServiceContinue();
return;
default:
break;
}
}
//
// FUNCTION: ReportStatusToSCMgr()
//
// PURPOSE: Sets the current status of the service and
// reports it to the Service Control Manager
//
// PARAMETERS:
// dwCurrentState - the state of the service
// dwWin32ExitCode - error code to report
// dwWaitHint - worst case estimate to next checkpoint
//
// RETURN VALUE:
// TRUE - success
// FALSE - failure
//
// COMMENTS:
//
BOOL ReportStatusToSCMgr(DWORD dwCurrentState,
DWORD dwWin32ExitCode,
DWORD dwWaitHint)
{
static DWORD dwCheckPoint = 1;
BOOL fResult = TRUE;
#ifdef DEBUG
if ( bDebug )
return TRUE;
#endif
if ( IS_NT ) // when debugging we don't report to the SCM
{
switch ( dwCurrentState )
{
case SERVICE_START_PENDING:
case SERVICE_STOP_PENDING:
case SERVICE_CONTINUE_PENDING:
case SERVICE_PAUSE_PENDING:
break;
case SERVICE_PAUSED:
case SERVICE_STOPPED:
case SERVICE_RUNNING:
ssStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP |
SERVICE_ACCEPT_PAUSE_CONTINUE ;
break;
}
ssStatus.dwCurrentState = dwCurrentState;
ssStatus.dwWin32ExitCode = dwWin32ExitCode;
ssStatus.dwWaitHint = dwWaitHint;
if ( ( dwCurrentState == SERVICE_RUNNING ) ||
( dwCurrentState == SERVICE_STOPPED ) ||
( dwCurrentState == SERVICE_PAUSED ))
ssStatus.dwCheckPoint = 0;
else
ssStatus.dwCheckPoint = dwCheckPoint++;
// Report the status of the service to the service control manager.
//
if (!(fResult = SetServiceStatus( sshStatusHandle, &ssStatus))) {
AddToMessageLog(EVENTLOG_ERROR_TYPE,
0,
MSG_ERR_SERVICE,
TEXT("SetServiceStatus"));
}
}
return fResult;
}
///////////////////////////////////////////////////////////////////
//
// The following code handles service installation and removal
//
//
// FUNCTION: CmdInstallService()
//
// PURPOSE: Installs the service
//
// PARAMETERS:
// none
//
// RETURN VALUE:
// none
//
// COMMENTS:
//
void CmdInstallService()
{
SC_HANDLE schService;
SC_HANDLE schSCManager;
TCHAR szPath[MAX_PATH];
TCHAR szSrvcDisplayName[MAX_PATH];
if ( GetModuleFileName( NULL, szPath, MAX_PATH ) == 0 )
{
#ifdef DEBUG
_tprintf(TEXT("Unable to install %s - %s\n"),
TEXT(SZSERVICEDISPLAYNAME), GetLastErrorText(szErr, 256));
#endif // DEBUG
return;
}
schSCManager = OpenSCManager(
NULL, // machine (NULL == local)
NULL, // database (NULL == default)
SC_MANAGER_ALL_ACCESS // access required
);
if ( schSCManager )
{
LoadString(GetModuleHandle(NULL), IDS_MNMSRVC_TITLE,
szSrvcDisplayName, CCHMAX(szSrvcDisplayName));
schService = CreateService(
schSCManager, // SCManager database
TEXT(SZSERVICENAME), // name of service
szSrvcDisplayName, // name to display
SERVICE_ALL_ACCESS, // desired access
SERVICE_WIN32_OWN_PROCESS | SERVICE_INTERACTIVE_PROCESS,
// service type -- allow interaction with desktop
SERVICE_DEMAND_START, // start type
SERVICE_ERROR_NORMAL, // error control type
szPath, // service's binary
NULL, // no load ordering group
NULL, // no tag identifier
TEXT(SZDEPENDENCIES), // dependencies
NULL, // LocalSystem account
NULL); // no password
if ( schService )
{
HINSTANCE hAdvApi;
if ( IS_NT && ( hAdvApi = LoadLibrary ( "ADVAPI32.DLL" )))
{
#ifdef UNICODE
#error "non-unicode assumption - entry point name"
#endif // UNICODE
if ( PFNCHANGESERVICECONFIG2 lpCSC =
(PFNCHANGESERVICECONFIG2)GetProcAddress ( hAdvApi,
"ChangeServiceConfig2A" ))
{
SERVICE_DESCRIPTION ServiceDescription;
CHAR szDescription[1024]; // Calling A variant below
LoadString(GetModuleHandle(NULL), IDS_MNMSRVC_DESCRIPTION,
szDescription, CCHMAX(szDescription));
ServiceDescription.lpDescription = szDescription;
(*lpCSC) ( schService,
SERVICE_CONFIG_DESCRIPTION,
(LPVOID) &ServiceDescription );
}
FreeLibrary ( hAdvApi );
}
#ifdef DEBUG
_tprintf(TEXT("%s installed.\n"), TEXT(SZSERVICEDISPLAYNAME) );
#endif // DEBUG
CloseServiceHandle(schService);
}
else
{
if ( GetLastError() == ERROR_SERVICE_EXISTS )
{
schService = OpenService(schSCManager, TEXT(SZSERVICENAME),
SERVICE_ALL_ACCESS);
if (schService)
{
// try to stop the service
if ( ControlService( schService, SERVICE_CONTROL_STOP, &ssStatus ) )
{
#ifdef DEBUG
_tprintf(TEXT("Stopping %s."), TEXT(SZSERVICEDISPLAYNAME));
#endif // DEBUG
Sleep( 1000 );
while( QueryServiceStatus( schService, &ssStatus ) )
{
if ( ssStatus.dwCurrentState == SERVICE_STOP_PENDING )
{
#ifdef DEBUG
_tprintf(TEXT("."));
#endif // DEBUG
Sleep( 1000 );
}
else
break;
}
if ( ssStatus.dwCurrentState == SERVICE_STOPPED )
{
#ifdef DEBUG
_tprintf(TEXT("\n%s stopped.\n"),
TEXT(SZSERVICEDISPLAYNAME) );
#endif // DEBUG
}
else
{
#ifdef DEBUG
_tprintf(TEXT("\n%s failed to stop.\n"),
TEXT(SZSERVICEDISPLAYNAME) );
#endif // DEBUG
}
}
// now set manual startup
if ( ChangeServiceConfig( schService, SERVICE_NO_CHANGE,
SERVICE_DEMAND_START, SERVICE_NO_CHANGE,
NULL, NULL, NULL, NULL, NULL, NULL, NULL))
{
#ifdef DEBUG
_tprintf(TEXT("%s set to manual start.\n"), TEXT(SZSERVICEDISPLAYNAME) );
#endif //DEBUG
}
else
{
#ifdef DEBUG
_tprintf(TEXT("ChangeServiceConfig failed - %s\n"), GetLastErrorText(szErr,256));
#endif //DEBUG
}
CloseServiceHandle(schService);
}
else
{
#ifdef DEBUG
_tprintf(TEXT("OpenService failed - %s\n"), GetLastErrorText(szErr,256));
#endif //DEBUG
}
}
else
{
#ifdef DEBUG
_tprintf(TEXT("CreateService failed - %s\n"),
GetLastErrorText(szErr, 256));
#endif // DEBUG
}
}
CloseServiceHandle(schSCManager);
}
else
{
#ifdef DEBUG
_tprintf(TEXT("OpenSCManager failed - %s\n"), GetLastErrorText(szErr,256));
#endif //DEBUG
}
}
//
// FUNCTION: CmdRemoveService()
//
// PURPOSE: Stops and removes the service
//
// PARAMETERS:
// none
//
// RETURN VALUE:
// none
//
// COMMENTS:
//
void CmdRemoveService()
{
SC_HANDLE schService;
SC_HANDLE schSCManager;
schSCManager = OpenSCManager(
NULL, // machine (NULL == local)
NULL, // database (NULL == default)
SC_MANAGER_ALL_ACCESS // access required
);
if ( schSCManager )
{
schService = OpenService(schSCManager, TEXT(SZSERVICENAME),
SERVICE_ALL_ACCESS);
if (schService)
{
// try to stop the service
if ( ControlService( schService, SERVICE_CONTROL_STOP, &ssStatus ) )
{
#ifdef DEBUG
_tprintf(TEXT("Stopping %s."), TEXT(SZSERVICEDISPLAYNAME));
#endif // DEBUG
Sleep( 1000 );
while( QueryServiceStatus( schService, &ssStatus ) )
{
if ( ssStatus.dwCurrentState == SERVICE_STOP_PENDING )
{
#ifdef DEBUG
_tprintf(TEXT("."));
#endif // DEBUG
Sleep( 1000 );
}
else
break;
}
if ( ssStatus.dwCurrentState == SERVICE_STOPPED )
{
#ifdef DEBUG
_tprintf(TEXT("\n%s stopped.\n"),
TEXT(SZSERVICEDISPLAYNAME) );
#endif // DEBUG
}
else
{
#ifdef DEBUG
_tprintf(TEXT("\n%s failed to stop.\n"),
TEXT(SZSERVICEDISPLAYNAME) );
#endif // DEBUG
}
}
// now remove the service
if( DeleteService(schService) )
{
#ifdef DEBUG
_tprintf(TEXT("%s removed.\n"), TEXT(SZSERVICEDISPLAYNAME) );
#endif //DEBUG
}
else
{
#ifdef DEBUG
_tprintf(TEXT("DeleteService failed - %s\n"), GetLastErrorText(szErr,256));
#endif //DEBUG
}
CloseServiceHandle(schService);
}
else
{
#ifdef DEBUG
_tprintf(TEXT("OpenService failed - %s\n"), GetLastErrorText(szErr,256));
#endif //DEBUG
}
CloseServiceHandle(schSCManager);
}
else
{
#ifdef DEBUG
_tprintf(TEXT("OpenSCManager failed - %s\n"), GetLastErrorText(szErr,256));
#endif //DEBUG
}
}
#ifdef DEBUG
///////////////////////////////////////////////////////////////////
//
// The following code is for running the service as a console app
//
//
// FUNCTION: CmdDebugService(int argc, char ** argv)
//
// PURPOSE: Runs the service as a console application
//
// PARAMETERS:
// argc - number of command line arguments
// argv - array of command line arguments
//
// RETURN VALUE:
// none
//
// COMMENTS:
//
void CmdDebugService(int argc, char ** argv)
{
DWORD dwArgc;
LPTSTR *lpszArgv;
#ifdef UNICODE
lpszArgv = CommandLineToArgvW(GetCommandLineW(), &(dwArgc) );
#else
dwArgc = (DWORD) argc;
lpszArgv = argv;
#endif
_tprintf(TEXT("Debugging %s.\n"), TEXT(SZSERVICEDISPLAYNAME));
SetConsoleCtrlHandler( ControlHandler, TRUE );
MNMServiceStart( dwArgc, lpszArgv );
}
//
// FUNCTION: ControlHandler ( DWORD dwCtrlType )
//
// PURPOSE: Handled console control events
//
// PARAMETERS:
// dwCtrlType - type of control event
//
// RETURN VALUE:
// True - handled
// False - unhandled
//
// COMMENTS:
//
BOOL WINAPI ControlHandler ( DWORD dwCtrlType )
{
switch( dwCtrlType )
{
case CTRL_BREAK_EVENT: // use Ctrl+C or Ctrl+Break to simulate
case CTRL_C_EVENT: // SERVICE_CONTROL_STOP in debug mode
_tprintf(TEXT("Stopping %s.\n"), TEXT(SZSERVICEDISPLAYNAME));
MNMServiceStop();
return TRUE;
break;
}
return FALSE;
}
//
// FUNCTION: GetLastErrorText
//
// PURPOSE: copies error message text to string
//
// PARAMETERS:
// lpszBuf - destination buffer
// dwSize - size of buffer
//
// RETURN VALUE:
// destination buffer
//
// COMMENTS:
//
LPTSTR GetLastErrorText( LPTSTR lpszBuf, DWORD dwSize )
{
DWORD dwRet;
LPTSTR lpszTemp = NULL;
dwRet = FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |FORMAT_MESSAGE_ARGUMENT_ARRAY,
NULL,
GetLastError(),
LANG_NEUTRAL,
(LPTSTR)&lpszTemp,
0,
NULL );
// supplied buffer is not long enough
if ( !dwRet || ( (long)dwSize < (long)dwRet+14 ) )
lpszBuf[0] = TEXT('\0');
else
{
lpszTemp[lstrlen(lpszTemp)-2] = TEXT('\0'); //remove cr and newline character
_stprintf( lpszBuf, TEXT("%s (0x%x)"), lpszTemp, GetLastError() );
}
if ( lpszTemp )
LocalFree((HLOCAL) lpszTemp );
return lpszBuf;
}
#endif // DEBUG