565 lines
14 KiB
C
565 lines
14 KiB
C
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/*++
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Copyright (c) 1994 Microsoft Corporation
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Module Name:
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Service.c
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Abstract:
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License Logging Service - Common routines for all service.
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Author:
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Arthur Hanson (arth) Dec 07, 1994
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Environment:
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Revision History:
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--*/
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#include <windows.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <process.h>
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#include <tchar.h>
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#include <shellapi.h>
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#include "service.h"
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#include "debug.h"
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// internal variables
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static SERVICE_STATUS ssStatus; // current status of the service
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SERVICE_STATUS_HANDLE sshStatusHandle = 0;
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static DWORD dwErr = 0;
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BOOL bDebug = FALSE;
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TCHAR szErr[256];
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// internal function prototypes
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VOID WINAPI ServiceCtrl(DWORD dwCtrlCode);
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VOID WINAPI ServiceMain(DWORD dwArgc, LPTSTR *lpszArgv);
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VOID CmdInstallService();
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VOID CmdRemoveService();
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VOID CmdDebugService(int argc, char **argv);
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BOOL WINAPI ControlHandler ( DWORD dwCtrlType );
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LPTSTR GetLastErrorText( LPTSTR lpszBuf, DWORD dwSize );
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/////////////////////////////////////////////////////////////////////////
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VOID __cdecl
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main(
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int argc,
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char **argv
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)
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/*++
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Routine Description:
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Main routine to setup the exception handlers and initialize everything
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before spawning threads to listen to LPC and RPC port requests.
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main() either performs the command line task, or calls
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StartServiceCtrlDispatcher to register the main service thread. When the
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this call returns, the service has stopped, so exit.
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Arguments:
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argc - number of command line arguments
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argv - array of command line arguments
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Return Values:
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None.
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--*/
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{
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SERVICE_TABLE_ENTRY dispatchTable[] = {
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{ TEXT(SZSERVICENAME), (LPSERVICE_MAIN_FUNCTION) ServiceMain },
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{ NULL, NULL }
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};
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if ( (argc > 1) && ((*argv[1] == '-') || (*argv[1] == '/')) ) {
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if ( _stricmp( "install", argv[1]+1 ) == 0 ) {
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CmdInstallService();
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} else if ( _stricmp( "remove", argv[1]+1 ) == 0 ) {
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CmdRemoveService();
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} else if ( _stricmp( "debug", argv[1]+1 ) == 0 ) {
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bDebug = TRUE;
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CmdDebugService(argc, argv);
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} else {
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goto dispatch;
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}
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exit(0);
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}
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// if it doesn't match any of the above parameters
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// the service control manager may be starting the service
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// so we must call StartServiceCtrlDispatcher
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dispatch:
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#ifdef DEBUG
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// this is just to be friendly
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printf( "%s -install to install the service\n", SZAPPNAME );
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printf( "%s -remove to remove the service\n", SZAPPNAME );
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printf( "%s -debug <params> to run as a console app for debugging\n", SZAPPNAME );
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printf( "\nStartServiceCtrlDispatcher being called.\n" );
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printf( "This may take several seconds. Please wait.\n" );
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#endif
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if (!StartServiceCtrlDispatcher(dispatchTable))
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dprintf(TEXT("LLS TRACE: StartServiceCtrlDispatcher failed\n"));
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} // main
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/////////////////////////////////////////////////////////////////////////
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VOID WINAPI
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ServiceMain(
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DWORD dwArgc,
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LPTSTR *lpszArgv
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)
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/*++
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Routine Description:
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Performs the service initialization and then calls the ServiceStart()
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routine to perform majority of the work.
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Arguments:
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dwArgc - number of command line arguments ***UNUSED***
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lpszArgv - array of command line arguments ***UNUSED***
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Return Values:
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None.
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--*/
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{
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// register our service control handler:
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//
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sshStatusHandle = RegisterServiceCtrlHandler( TEXT(SZSERVICENAME), ServiceCtrl);
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if (!sshStatusHandle)
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goto cleanup;
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// SERVICE_STATUS members that don't change in example
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//
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ssStatus.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
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ssStatus.dwServiceSpecificExitCode = 0;
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// report the status to the service control manager.
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//
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if (!ReportStatusToSCMgr(
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SERVICE_START_PENDING, // service state
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NO_ERROR, // exit code
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NSERVICEWAITHINT)) // wait hint
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goto cleanup;
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ServiceStart( dwArgc, lpszArgv );
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cleanup:
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// try to report the stopped status to the service control manager.
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//
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if (sshStatusHandle)
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(VOID)ReportStatusToSCMgr(
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SERVICE_STOPPED,
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dwErr,
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0);
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return;
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} // ServiceMain
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/////////////////////////////////////////////////////////////////////////
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VOID WINAPI
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ServiceCtrl(
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DWORD dwCtrlCode
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)
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/*++
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Routine Description:
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Called by the SCM whenever ControlService() is called on this service.
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Arguments:
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dwCtrlCode - type of control requested
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Return Values:
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None.
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--*/
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{
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DWORD dwState = SERVICE_RUNNING;
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// Handle the requested control code.
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//
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switch(dwCtrlCode) {
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// Stop the service.
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//
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case SERVICE_CONTROL_STOP:
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dwState = SERVICE_STOP_PENDING;
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ssStatus.dwCurrentState = SERVICE_STOP_PENDING;
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break;
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// Update the service status.
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//
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case SERVICE_CONTROL_INTERROGATE:
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break;
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// invalid control code
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//
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default:
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break;
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}
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ReportStatusToSCMgr(dwState, NO_ERROR, 0);
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if ( SERVICE_CONTROL_STOP == dwCtrlCode )
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{
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ServiceStop();
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}
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} // ServiceCtrl
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/////////////////////////////////////////////////////////////////////////
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BOOL
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ReportStatusToSCMgr(
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DWORD dwCurrentState,
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DWORD dwWin32ExitCode,
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DWORD dwWaitHint
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)
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/*++
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Routine Description:
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Sets the current status of the service and reports it to the SCM.
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Arguments:
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dwCurrentState - the state of the service
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dwWin32ExitCode - error code to report
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dwWaitHint - worst case estimate to next checkpoint
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Return Values:
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None.
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--*/
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{
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static DWORD dwCheckPoint = 1;
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BOOL fResult = TRUE;
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if (sshStatusHandle == 0)
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{
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return FALSE;
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}
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ssStatus.dwControlsAccepted = 0;
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if ( !bDebug ) { // when debugging we don't report to the SCM
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if (dwCurrentState == SERVICE_START_PENDING)
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ssStatus.dwControlsAccepted = 0;
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else
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ssStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP;
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ssStatus.dwCurrentState = dwCurrentState;
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ssStatus.dwWin32ExitCode = dwWin32ExitCode;
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ssStatus.dwWaitHint = dwWaitHint;
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if ( ( dwCurrentState == SERVICE_RUNNING ) ||
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( dwCurrentState == SERVICE_STOPPED ) )
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ssStatus.dwCheckPoint = 0;
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else
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ssStatus.dwCheckPoint = dwCheckPoint++;
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// Report the status of the service to the service control manager.
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//
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if (!(fResult = SetServiceStatus( sshStatusHandle, &ssStatus))) {
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dprintf(TEXT("LLS TRACE: SetServiceStatus failed\n"));
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}
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}
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return fResult;
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} // ReportStatusToSCMgr
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/////////////////////////////////////////////////////////////////////////
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//
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// The following code handles service installation and removal
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//
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/////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////
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VOID
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CmdInstallService()
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/*++
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Routine Description:
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Installs the service.
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Arguments:
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None.
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Return Values:
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None.
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--*/
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{
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SC_HANDLE schService;
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SC_HANDLE schSCManager;
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TCHAR szPath[512];
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if ( GetModuleFileName( NULL, szPath, 512 ) == 0 ) {
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_tprintf(TEXT("Unable to install %s - %s\n"), TEXT(SZSERVICEDISPLAYNAME), GetLastErrorText(szErr, 256));
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return;
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}
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schSCManager = OpenSCManager(
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NULL, // machine (NULL == local)
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NULL, // database (NULL == default)
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SC_MANAGER_ALL_ACCESS // access required
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);
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if ( schSCManager ) {
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schService = CreateService(
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schSCManager, // SCManager database
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TEXT(SZSERVICENAME), // name of service
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TEXT(SZSERVICEDISPLAYNAME), // name to display
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SERVICE_ALL_ACCESS, // desired access
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SERVICE_WIN32_OWN_PROCESS, // service type
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SERVICE_DEMAND_START, // start type
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SERVICE_ERROR_NORMAL, // error control type
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szPath, // service's binary
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NULL, // no load ordering group
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NULL, // no tag identifier
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TEXT(SZDEPENDENCIES), // dependencies
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NULL, // LocalSystem account
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NULL); // no password
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if ( schService ) {
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_tprintf(TEXT("%s installed.\n"), TEXT(SZSERVICEDISPLAYNAME) );
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CloseServiceHandle(schService);
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} else {
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_tprintf(TEXT("CreateService failed - %s\n"), GetLastErrorText(szErr, 256));
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}
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CloseServiceHandle(schSCManager);
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} else
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_tprintf(TEXT("OpenSCManager failed - %s\n"), GetLastErrorText(szErr,256));
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} // CmdInstallService
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/////////////////////////////////////////////////////////////////////////
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VOID
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CmdRemoveService()
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/*++
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Routine Description:
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Stops and removes the service.
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Arguments:
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None.
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Return Values:
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None.
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--*/
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{
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SC_HANDLE schService;
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SC_HANDLE schSCManager;
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schSCManager = OpenSCManager(
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NULL, // machine (NULL == local)
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NULL, // database (NULL == default)
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SC_MANAGER_ALL_ACCESS // access required
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);
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if ( schSCManager ) {
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schService = OpenService(schSCManager, TEXT(SZSERVICENAME), SERVICE_ALL_ACCESS);
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if (schService) {
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// try to stop the service
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if ( ControlService( schService, SERVICE_CONTROL_STOP, &ssStatus ) ) {
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_tprintf(TEXT("Stopping %s."), TEXT(SZSERVICEDISPLAYNAME));
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Sleep( 1000 );
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while( QueryServiceStatus( schService, &ssStatus ) ) {
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if ( ssStatus.dwCurrentState == SERVICE_STOP_PENDING ) {
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_tprintf(TEXT("."));
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Sleep( 1000 );
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} else
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break;
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}
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if ( ssStatus.dwCurrentState == SERVICE_STOPPED )
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_tprintf(TEXT("\n%s stopped.\n"), TEXT(SZSERVICEDISPLAYNAME) );
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else
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_tprintf(TEXT("\n%s failed to stop.\n"), TEXT(SZSERVICEDISPLAYNAME) );
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}
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// now remove the service
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if( DeleteService(schService) )
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_tprintf(TEXT("%s removed.\n"), TEXT(SZSERVICEDISPLAYNAME) );
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else
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_tprintf(TEXT("DeleteService failed - %s\n"), GetLastErrorText(szErr,256));
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CloseServiceHandle(schService);
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} else
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_tprintf(TEXT("OpenService failed - %s\n"), GetLastErrorText(szErr,256));
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CloseServiceHandle(schSCManager);
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} else
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_tprintf(TEXT("OpenSCManager failed - %s\n"), GetLastErrorText(szErr,256));
|
||
|
|
|
||
|
|
} // CmdRemoveService
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// Routines for running the service as a console app
|
||
|
|
//
|
||
|
|
/////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
|
||
|
|
/////////////////////////////////////////////////////////////////////////
|
||
|
|
VOID CmdDebugService(
|
||
|
|
int argc,
|
||
|
|
char ** argv
|
||
|
|
)
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Runs the service as a console application
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
argc - number of command line arguments ***UNUSED***
|
||
|
|
argv - array of command line arguments ***UNUSED***
|
||
|
|
|
||
|
|
Return Values:
|
||
|
|
|
||
|
|
None.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
{
|
||
|
|
_tprintf(TEXT("Debugging %s.\n"), TEXT(SZSERVICEDISPLAYNAME));
|
||
|
|
|
||
|
|
SetConsoleCtrlHandler( ControlHandler, TRUE );
|
||
|
|
|
||
|
|
// assumption: argv and argc unused
|
||
|
|
ServiceStart( 0, NULL );
|
||
|
|
} // CmdDebugService
|
||
|
|
|
||
|
|
|
||
|
|
/////////////////////////////////////////////////////////////////////////
|
||
|
|
BOOL WINAPI
|
||
|
|
ControlHandler (
|
||
|
|
DWORD dwCtrlType
|
||
|
|
)
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Handle console control events.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
dwCtrlType - type of control event
|
||
|
|
lpszMsg - text for message
|
||
|
|
|
||
|
|
Return Values:
|
||
|
|
|
||
|
|
True - handled
|
||
|
|
False - unhandled
|
||
|
|
|
||
|
|
--*/
|
||
|
|
{
|
||
|
|
|
||
|
|
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));
|
||
|
|
ServiceStop();
|
||
|
|
return TRUE;
|
||
|
|
break;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return FALSE;
|
||
|
|
|
||
|
|
} // ControlHandler
|
||
|
|
|
||
|
|
|
||
|
|
/////////////////////////////////////////////////////////////////////////
|
||
|
|
LPTSTR
|
||
|
|
GetLastErrorText(
|
||
|
|
LPTSTR lpszBuf,
|
||
|
|
DWORD dwSize
|
||
|
|
)
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Copies last error message text to string.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
lpszBuf - destination buffer
|
||
|
|
dwSize - size of buffer
|
||
|
|
|
||
|
|
Return Values:
|
||
|
|
|
||
|
|
destination buffer
|
||
|
|
|
||
|
|
--*/
|
||
|
|
{
|
||
|
|
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;
|
||
|
|
} // GetLastErrorText
|