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822 lines
23 KiB
822 lines
23 KiB
//
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// Copyright (C) 1993-1997 Microsoft Corporation. All Rights Reserved.
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//
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// MODULE: service.c
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//
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// PURPOSE: Implements functions required by all services
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// windows.
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//
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// FUNCTIONS:
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// main(int argc, char **argv);
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// NTmain(int argc, char **argv);
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// W95main(int argc, char **argv);
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// service_ctrl(DWORD dwCtrlCode);
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// service_main(DWORD dwArgc, LPTSTR *lpszArgv);
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// CmdInstallService();
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// CmdRemoveService();
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// CmdDebugService(int argc, char **argv); // DEBUG only
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// ControlHandler ( DWORD dwCtrlType ); // DEBUG only
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// GetLastErrorText( LPTSTR lpszBuf, DWORD dwSize ); // DEBUG only
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//
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// COMMENTS:
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//
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// AUTHOR: Claus Giloi (based on SDK sample)
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//
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#include "precomp.h"
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#ifndef DEBUG
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#undef _tprintf
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#define _tprintf force_compile_error
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#endif // !DEBUG
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// internal variables
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SERVICE_STATUS ssStatus; // current status of the service
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SERVICE_STATUS_HANDLE sshStatusHandle;
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DWORD dwErr = 0;
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OSVERSIONINFO g_osvi; // The os version info structure global
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BOOL g_fInShutdown = FALSE;
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// internal function prototypes
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VOID WINAPI service_ctrl(DWORD dwCtrlCode);
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VOID WINAPI service_main(DWORD dwArgc, LPTSTR *lpszArgv);
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VOID CmdInstallService();
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VOID CmdRemoveService();
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void __cdecl NTmain(int argc, char **argv);
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void __cdecl W95main(int argc, char **argv);
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// Debug only functionality
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#ifdef DEBUG
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TCHAR szErr[256];
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BOOL bDebug = FALSE;
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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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extern BOOL InitDebugMemoryOptions(void);
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extern VOID DumpMemoryLeaksAndBreak(void);
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#endif // DEBUG
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typedef BOOL (WINAPI *PFNCHANGESERVICECONFIG2)(SC_HANDLE, DWORD, LPVOID);
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//
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// FUNCTION: main
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//
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// PURPOSE: entrypoint for service
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//
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// PARAMETERS:
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// argc - number of command line arguments
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// argv - array of command line arguments
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//
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// RETURN VALUE:
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// none
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//
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// COMMENTS:
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// Get Platform type and
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// call appropriate main for platform (NT or Win95)
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//
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void __cdecl main(int argc, char **argv)
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{
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#ifdef DEBUG
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InitDebugMemoryOptions();
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#endif // DEBUG
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// Store OS version info
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g_osvi.dwOSVersionInfoSize = sizeof(g_osvi);
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if (FALSE == ::GetVersionEx(&g_osvi))
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{
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ERROR_OUT(("GetVersionEx() failed!"));
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return;
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}
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RegEntry rePol(POLICIES_KEY, HKEY_LOCAL_MACHINE);
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if ( rePol.GetNumber( REGVAL_POL_NO_RDS, DEFAULT_POL_NO_RDS) )
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{
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WARNING_OUT(("RDS launch prevented by policy"));
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return;
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}
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if ( IS_NT )
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{
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NTmain( argc, argv );
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}
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else
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{
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W95main( argc, argv );
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}
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#ifdef DEBUG
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DumpMemoryLeaksAndBreak();
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#endif // DEBUG
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}
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//
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// FUNCTION: NTmain
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//
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// PURPOSE: entrypoint for service
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//
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// PARAMETERS:
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// argc - number of command line arguments
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// argv - array of command line arguments
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//
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// RETURN VALUE:
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// none
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//
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// COMMENTS:
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// NTmain() either performs the command line task, or
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// call StartServiceCtrlDispatcher to register the
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// main service thread. When the this call returns,
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// the service has stopped, so exit.
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//
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void __cdecl NTmain(int argc, char **argv)
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{
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SERVICE_TABLE_ENTRY dispatchTable[] =
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{
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{ TEXT(SZSERVICENAME), (LPSERVICE_MAIN_FUNCTION)service_main },
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{ NULL, NULL }
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};
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if ( (argc > 1) &&
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((*argv[1] == '-') || (*argv[1] == '/')) )
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{
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if ( lstrcmpi( "install", argv[1]+1 ) == 0 )
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{
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CmdInstallService();
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}
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else if ( lstrcmpi( "remove", argv[1]+1 ) == 0 )
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{
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CmdRemoveService();
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}
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#ifdef DEBUG
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else if ( lstrcmpi( "debug", argv[1]+1 ) == 0 )
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{
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bDebug = TRUE;
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CmdDebugService(argc, argv);
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}
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#endif // DEBUG
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else
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{
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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 // DEBUG
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if (!StartServiceCtrlDispatcher(dispatchTable)) {
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AddToMessageLog(EVENTLOG_ERROR_TYPE,
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0,
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MSG_ERR_SERVICE,
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TEXT("StartServiceCtrlDispatcher failed."));
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}
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}
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//
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// FUNCTION: W95main
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//
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// PURPOSE: entrypoint for pseudo-service on Win95
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//
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// PARAMETERS:
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// argc - number of command line arguments
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// argv - array of command line arguments
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//
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// RETURN VALUE:
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// none
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//
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// COMMENTS:
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// W95main() registers as Win95 service and calls Init routine directly
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//
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typedef DWORD (WINAPI * REGISTERSERVICEPROC)(DWORD, DWORD);
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#ifndef RSP_SIMPLE_SERVICE
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#define RSP_SIMPLE_SERVICE 0x00000001
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#endif
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void __cdecl W95main(int argc, char **argv)
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{
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HMODULE hKernel;
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REGISTERSERVICEPROC lpfnRegisterServiceProcess;
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HANDLE hServiceEvent = OpenEvent(EVENT_ALL_ACCESS, FALSE, SERVICE_PAUSE_EVENT);
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if (hServiceEvent != NULL) // Service is already running
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{
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return;
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}
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if ( hKernel = GetModuleHandle("KERNEL32.DLL") )
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{
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if ( lpfnRegisterServiceProcess =
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(REGISTERSERVICEPROC)GetProcAddress ( hKernel,
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"RegisterServiceProcess" ))
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{
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if (!lpfnRegisterServiceProcess(NULL, RSP_SIMPLE_SERVICE))
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{
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ERROR_OUT(("RegisterServiceProcess failed"));
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}
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}
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else
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{
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ERROR_OUT(("GetProcAddr of RegisterServiceProcess failed"));
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}
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}
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else
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{
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ERROR_OUT(("GetModuleHandle of KERNEL32.DLL failed"));
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}
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MNMServiceStart(argc, argv);
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CloseHandle(hServiceEvent);
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}
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//
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// FUNCTION: service_main
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//
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// PURPOSE: To perform actual initialization of the service
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//
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// PARAMETERS:
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// dwArgc - number of command line arguments
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// lpszArgv - array of command line arguments
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//
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// RETURN VALUE:
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// none
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//
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// COMMENTS:
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// This routine performs the service initialization and then calls
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// the user defined MNMServiceStart() routine to perform majority
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// of the work.
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//
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void WINAPI service_main(DWORD dwArgc, LPTSTR *lpszArgv)
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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), service_ctrl);
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if (!sshStatusHandle)
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goto cleanup;
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// SERVICE_STATUS members that don't change
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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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TRACE_OUT(("starting service\n\r"));
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MNMServiceStart( dwArgc, lpszArgv );
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cleanup:
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return;
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}
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//
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// FUNCTION: service_ctrl
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//
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// PURPOSE: This function is called by the SCM whenever
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// ControlService() is called on this service.
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//
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// PARAMETERS:
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// dwCtrlCode - type of control requested
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//
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// RETURN VALUE:
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// none
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//
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// COMMENTS:
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//
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VOID WINAPI service_ctrl(DWORD dwCtrlCode)
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{
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// Handle the requested control code.
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//
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switch(dwCtrlCode)
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{
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// Stop the service.
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//
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// SERVICE_STOP_PENDING should be reported before
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// setting the Stop Event - hServerStopEvent - in
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// MNMServiceStop(). This avoids a race condition
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// which may result in a 1053 - The Service did not respond...
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// error.
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case SERVICE_CONTROL_STOP:
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ReportStatusToSCMgr(SERVICE_STOP_PENDING, NO_ERROR, 30000);
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MNMServiceStop();
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return;
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case SERVICE_CONTROL_SHUTDOWN:
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g_fInShutdown = TRUE;
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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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case SERVICE_CONTROL_PAUSE:
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ReportStatusToSCMgr(SERVICE_PAUSE_PENDING, NO_ERROR, 30000);
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MNMServicePause();
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return;
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case SERVICE_CONTROL_CONTINUE:
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ReportStatusToSCMgr(SERVICE_CONTINUE_PENDING, NO_ERROR, 30000);
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MNMServiceContinue();
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return;
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default:
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break;
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}
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}
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|
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//
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// FUNCTION: ReportStatusToSCMgr()
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//
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// PURPOSE: Sets the current status of the service and
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// reports it to the Service Control Manager
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//
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// PARAMETERS:
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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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//
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// RETURN VALUE:
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// TRUE - success
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// FALSE - failure
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//
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// COMMENTS:
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//
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BOOL ReportStatusToSCMgr(DWORD dwCurrentState,
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DWORD dwWin32ExitCode,
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DWORD dwWaitHint)
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{
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static DWORD dwCheckPoint = 1;
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BOOL fResult = TRUE;
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#ifdef DEBUG
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if ( bDebug )
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return TRUE;
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#endif
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|
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if ( IS_NT ) // when debugging we don't report to the SCM
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{
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switch ( dwCurrentState )
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{
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case SERVICE_START_PENDING:
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case SERVICE_STOP_PENDING:
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case SERVICE_CONTINUE_PENDING:
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case SERVICE_PAUSE_PENDING:
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break;
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case SERVICE_PAUSED:
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case SERVICE_STOPPED:
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case SERVICE_RUNNING:
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ssStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP |
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SERVICE_ACCEPT_PAUSE_CONTINUE ;
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break;
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}
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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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|
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if ( ( dwCurrentState == SERVICE_RUNNING ) ||
|
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( dwCurrentState == SERVICE_STOPPED ) ||
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( dwCurrentState == SERVICE_PAUSED ))
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ssStatus.dwCheckPoint = 0;
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else
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ssStatus.dwCheckPoint = dwCheckPoint++;
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|
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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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AddToMessageLog(EVENTLOG_ERROR_TYPE,
|
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0,
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MSG_ERR_SERVICE,
|
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TEXT("SetServiceStatus"));
|
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}
|
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}
|
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return fResult;
|
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}
|
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|
|
|
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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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// FUNCTION: CmdInstallService()
|
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//
|
|
// PURPOSE: Installs the service
|
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//
|
|
// PARAMETERS:
|
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// none
|
|
//
|
|
// RETURN VALUE:
|
|
// none
|
|
//
|
|
// COMMENTS:
|
|
//
|
|
void CmdInstallService()
|
|
{
|
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SC_HANDLE schService;
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SC_HANDLE schSCManager;
|
|
|
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TCHAR szPath[MAX_PATH];
|
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TCHAR szSrvcDisplayName[MAX_PATH];
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DWORD dwModuleFileName = GetModuleFileName( NULL, szPath, MAX_PATH - 1 );
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szPath[MAX_PATH-1] = 0;
|
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if (dwModuleFileName == 0 )
|
|
{
|
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#ifdef DEBUG
|
|
_tprintf(TEXT("Unable to install %s - %s\n"),
|
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TEXT(SZSERVICEDISPLAYNAME), GetLastErrorText(szErr, 256));
|
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#endif // DEBUG
|
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return;
|
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}
|
|
|
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schSCManager = OpenSCManager(
|
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NULL, // machine (NULL == local)
|
|
NULL, // database (NULL == default)
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SC_MANAGER_ALL_ACCESS // access required
|
|
);
|
|
if ( schSCManager )
|
|
{
|
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LoadString(GetModuleHandle(NULL), IDS_MNMSRVC_TITLE,
|
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szSrvcDisplayName, CCHMAX(szSrvcDisplayName));
|
|
schService = CreateService(
|
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schSCManager, // SCManager database
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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 = NmLoadLibrary ( "ADVAPI32.DLL" ,TRUE)))
|
|
{
|
|
#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
|
|
|