//我们进行Windows编程的时候，经常涉及到Windows服务编程，针对Windows服务我们该怎么编程呢，
//我们先来实现一个Windows服务并实现之，请见注释代码分析。
/* 头文件 */
#include <windows.h>
/* 全局变量 */
SERVICE_STATUS SplSrvServiceStatus;
SERVICE_STATUS_HANDLE SplSrvServiceStatusHandle;
/* 函数声明 */
VOID SvcDebugOut(LPSTR String, DWORD Status);
VOID WINAPI SplSrvServiceCtrlHandler (DWORD opcode);
VOID WINAPI SplSrvServiceStart (DWORD argc, LPTSTR *argv);
DWORD SplSrvServiceInitialization (DWORD argc, LPTSTR *argv,
DWORD *specificError);
/*************************************
* VOID WINAPI SplSrvServiceStart (DWORD argc, LPTSTR *argv)
* 功能 服务启动函数
*
* 参数 未使用
**************************************/
VOID WINAPI SplSrvServiceStart (DWORD argc, LPTSTR *argv)
{
DWORD status;
DWORD specificError;
// 填充SERVICE_STATUS 结构
SplSrvServiceStatus.dwServiceType = SERVICE_WIN32;
SplSrvServiceStatus.dwCurrentState
= SERVICE_START_PENDING; // 服务在运行
SplSrvServiceStatus.dwControlsAccepted
= SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE;
SplSrvServiceStatus.dwWin32ExitCode = 0;
SplSrvServiceStatus.dwServiceSpecificExitCode = 0;
SplSrvServiceStatus.dwCheckPoint = 0;
SplSrvServiceStatus.dwWaitHint = 0;
// 注册服务控制请求处理例程
SplSrvServiceStatusHandle = RegisterServiceCtrlHandler(
"Sample_Srv", // 服务名，在创建服务时使用了
// SERVICE_WIN32_OWN_PROCESS，因此本参数被忽略。
SplSrvServiceCtrlHandler); // 控制请求处理例程，函数名
if (SplSrvServiceStatusHandle == (SERVICE_STATUS_HANDLE)0)
{
SvcDebugOut(" [SPLSRV_SERVICE] RegisterServiceCtrlHandler "
"failed %dn", GetLastError());
return;
}
// 初始化工作，本示例未使用，函数为空
status = SplSrvServiceInitialization(argc,argv, &specificError);
// 初始化出错，用户自行修改
if (status != NO_ERROR)
{
SplSrvServiceStatus.dwCurrentState = SERVICE_STOPPED;
SplSrvServiceStatus.dwCheckPoint = 0;
SplSrvServiceStatus.dwWaitHint = 0;
SplSrvServiceStatus.dwWin32ExitCode = status;
SplSrvServiceStatus.dwServiceSpecificExitCode = specificError;
SetServiceStatus (SplSrvServiceStatusHandle, &SplSrvServiceStatus);
return;
}
// 初始化完成，设置运行状态
SplSrvServiceStatus.dwCurrentState = SERVICE_RUNNING;
SplSrvServiceStatus.dwCheckPoint = 0;
SplSrvServiceStatus.dwWaitHint = 0;
if (!SetServiceStatus (SplSrvServiceStatusHandle, &SplSrvServiceStatus))
{
status = GetLastError();
SvcDebugOut(" [SPLSRV_SERVICE] SetServiceStatus error %ldn",status);
}
// 用户自行修改，用于完成服务的工作
SvcDebugOut(" [SPLSRV_SERVICE] Returning the Main Thread n",0);
return;
}
/*************************************
* DWORD SplSrvServiceInitialization(DWORD argc,
* LPTSTR *argv,
* DWORD *specificError)
* 功能 初始化，这里未进行任何工作，留待读者修改
*
* 参数
**************************************/
DWORD SplSrvServiceInitialization(DWORD argc,
LPTSTR *argv,
DWORD *specificError)
{
return(0);
}
/*************************************
* VOID WINAPI SplSrvServiceCtrlHandler (DWORD Opcode)
* 功能 服务控制请求的处理函数，与ControlService函数配合。
*
* 参数 服务控制码
**************************************/
VOID WINAPI SplSrvServiceCtrlHandler (DWORD Opcode)
{
DWORD status;
switch(Opcode)
{
case SERVICE_CONTROL_PAUSE:
// 完成相关功能
SplSrvServiceStatus.dwCurrentState = SERVICE_PAUSED;
break;
case SERVICE_CONTROL_CONTINUE:
// 完成相关功能
SplSrvServiceStatus.dwCurrentState = SERVICE_RUNNING;
break;
case SERVICE_CONTROL_STOP:
// 完成相关功能
SplSrvServiceStatus.dwWin32ExitCode = 0;
SplSrvServiceStatus.dwCurrentState = SERVICE_STOPPED;
SplSrvServiceStatus.dwCheckPoint = 0;
SplSrvServiceStatus.dwWaitHint = 0;
if (!SetServiceStatus (SplSrvServiceStatusHandle,
&SplSrvServiceStatus))
{
status = GetLastError();
SvcDebugOut(" [SPLSRV_SERVICE] SetServiceStatus error %ldn",
status);
}
SvcDebugOut(" [SPLSRV_SERVICE] Leaving SplSrvService n",0);
return;
case SERVICE_CONTROL_INTERROGATE:
// 收到此请求后发出声响，演示服务控制请求的处理过程，读者可自行修改
MessageBeep(MB_OK);
break;
default:
SvcDebugOut(" [SPLSRV_SERVICE] Unrecognized opcode %ldn",
Opcode);
}
// 当前状态
if (!SetServiceStatus (SplSrvServiceStatusHandle, &SplSrvServiceStatus))
{
status = GetLastError();
SvcDebugOut(" [SPLSRV_SERVICE] SetServiceStatus error %ldn",
status);
}
return;
}
/*************************************
* void main( )
* 功能 程序入口函数，注册服务启动函数等。
*
* 参数 服务控制码
**************************************/
void main( )
{
// 设置SERVICE_TABLE_ENTRY 数据结构，以NULL 结构结束，
// 作为StartServiceCtrlDispatcher 函数的参数。
SERVICE_TABLE_ENTRY DispatchTable[] =
{
{ "Sample_Srv", (LPSERVICE_MAIN_FUNCTION) SplSrvServiceStart },
{ NULL, NULL }
};
if (!StartServiceCtrlDispatcher( DispatchTable))
{
SvcDebugOut(" [SPLSRV_SERVICE] StartServiceCtrlDispatcher (%d)n",
GetLastError());
}
}
/*************************************
* VOID SvcDebugOut(LPSTR String, DWORD Status)
* 功能 显示信息给调试器。
*
* 参数 LPSTR String 消息字符串
* DWORD Status 状态
**************************************/
VOID SvcDebugOut(LPSTR String, DWORD Status)
{
CHAR Buffer[1024];
if (strlen(String) < 1000)
{
wsprintf(Buffer, String, Status);
OutputDebugString(Buffer);
}
}
//具体实现代码如下，请见代码分析
**************************************/
/* 头文件 */
#include <windows.h>
#include <tchar.h>
#include <stdio.h>
/* 全局变量 */
SC_HANDLE schService;
SC_HANDLE schSCManager;
LPTSTR szServiceName = TEXT("Sample_Srv");
/*************************************
* BOOL CreateSampleService(LPTSTR szPath, LPSTR szServiceName)
* 功能 创建服务
*
* 参数
* SC_HANDLE schSCManager，SCM句柄
* LPTSTR szPath， 服务程序的路径
* LPSTR szServiceName， 服务名
**************************************/
BOOL CreateSampleService(
SC_HANDLE schSCManager,
LPTSTR szPath,
LPSTR szServiceName)
{
// 创建服务
schService = CreateService(
schSCManager, // SCM 句柄
szServiceName, // 服务名
"Service sample", // 显示的服务名
SERVICE_ALL_ACCESS, // 存取权限
SERVICE_WIN32_OWN_PROCESS, // 服务类别
SERVICE_DEMAND_START, // 启动类别
SERVICE_ERROR_NORMAL, // 错误控制类别
szPath, // 服务的可执行文件路径
NULL, // no load ordering group
NULL, // no tag identifier
NULL, // no dependencies
NULL, // LocalSystem account
NULL); // no password
if (schService == NULL)
{
printf("CreateService failed (%d)n", GetLastError());
return FALSE;
}
else
{
printf("CreateService succeededn");
CloseServiceHandle(schService);
return TRUE;
}
}
/*************************************
* BOOL DeleteSampleService(LPTSTR szNameOfService)
* 功能 删除服务
*
* 参数 LPTSTR szNameOfService 服务的名字
**************************************/
BOOL DeleteSampleService(LPTSTR szNameOfService)
{
schService = OpenService(
schSCManager, // SCM 句柄
szNameOfService, // 服务名
DELETE); // 可删除
if (schService == NULL)
{
printf("OpenService failed (%d)n", GetLastError());
return FALSE;
}
// 删除服务
if (! DeleteService(schService) )
{
printf("DeleteService failed (%d)n", GetLastError());
return FALSE;
}
else
printf("DeleteService succeededn");
// 关闭句柄
CloseServiceHandle(schService);
return TRUE;
}
/*************************************
* void main( int argc, TCHAR *argv[] )
* 功能 演示
*
* 参数 未使用
**************************************/
void main( int argc, TCHAR *argv[] )
{
TCHAR szBinFilePath[MAX_PATH];
PTCHAR pTemp;
DWORD dwStopError;
// 构造服务可执行程序的路径
GetModuleFileName(NULL,szBinFilePath,MAX_PATH);
pTemp = szBinFilePath+lstrlen(szBinFilePath);
while(*--pTemp!='');
lstrcpy(pTemp,TEXT("SplSrv.exe"));
// 打开 SCM
schSCManager = OpenSCManager(
NULL, // local machine
NULL, // ServicesActive database
SC_MANAGER_ALL_ACCESS); // full access rights
if (NULL == schSCManager)
printf("OpenSCManager failed (%d)n", GetLastError());
// 创建服务
CreateSampleService(schSCManager, szBinFilePath, szServiceName);
// 启动服务
StartSampleService(schSCManager,szServiceName);
// 发送请求控制
ControlSampleService(SERVICE_CONTROL_INTERROGATE);
ControlSampleService(SERVICE_CONTROL_CONTINUE);
// 停止服务
dwStopError = StopService( schSCManager, szServiceName,
TRUE, 1000);
if(ERROR_SUCCESS == dwStopError)
{
printf("Service Stopedn");
}
else
{
printf("Service stoped error (%u)n",dwStopError);
}
// 删除服务
DeleteSampleService(szServiceName);
CloseServiceHandle(schSCManager);
}
//然后我们如何控制服务呢，我们来实现启动、停止服务，向服务发送请求。
/* 头文件 */
#include <windows.h>
#include <tchar.h>
#include <stdio.h>
/* 全局变量 */
extern SC_HANDLE schService; // 在init.c中定义，下同
extern SC_HANDLE schSCManager;
extern LPTSTR szServiceName;
/*************************************
* BOOL StartSampleService(SC_HANDLE schSCManager,LPTSTR szServiceName)
* 功能 启动服务
*
* 参数 SC_HANDLE schSCManager SCM 句柄
* LPTSTR szServiceName 服务名
**************************************/
BOOL StartSampleService(SC_HANDLE schSCManager,LPTSTR szServiceName)
{
SC_HANDLE schService;
SERVICE_STATUS_PROCESS ssStatus;
DWORD dwOldCheckPoint;
DWORD dwStartTickCount;
DWORD dwWaitTime;
DWORD dwBytesNeeded;
// 打开服务
schService = OpenService(
schSCManager, // SCM database
szServiceName, // service name
SERVICE_ALL_ACCESS);
if (schService == NULL)
{
return 0;
}
// 启动服务
if (!StartService(
schService, // handle to service
0, // number of arguments
NULL) ) // no arguments
{
printf("Service start error (%u).n",GetLastError());
return 0;
}
else
{
printf("Service start pending.n");
}
// 验证状态
if (!QueryServiceStatusEx(
schService, // handle to service
SC_STATUS_PROCESS_INFO, // info level
(LPBYTE)&ssStatus, // address of structure
sizeof(SERVICE_STATUS_PROCESS), // size of structure
&dwBytesNeeded ) ) // if buffer too small
{
return 0;
}
// tick count & checkpoint.
dwStartTickCount = GetTickCount();
dwOldCheckPoint = ssStatus.dwCheckPoint;
// 查询状态，确定 PENDING 状态结束
while (ssStatus.dwCurrentState == SERVICE_START_PENDING)
{
// 等待一段时间
dwWaitTime = ssStatus.dwWaitHint / 10;
if( dwWaitTime < 1000 )
dwWaitTime = 1000;
else if ( dwWaitTime > 10000 )
dwWaitTime = 10000;
Sleep( dwWaitTime );
// 再次查询
if (!QueryServiceStatusEx(
schService, // handle to service
SC_STATUS_PROCESS_INFO, // info level
(LPBYTE)&ssStatus, // address of structure
sizeof(SERVICE_STATUS_PROCESS), // size of structure
&dwBytesNeeded ) ) // if buffer too small
break;
if ( ssStatus.dwCheckPoint > dwOldCheckPoint )
{
// 进程创建中
dwStartTickCount = GetTickCount();
dwOldCheckPoint = ssStatus.dwCheckPoint;
}
else
{
if(GetTickCount()-dwStartTickCount > ssStatus.dwWaitHint)
{
// WaitHint 时间到
break;
}
}
}
// 关闭句柄
CloseServiceHandle(schService);
// 判断是否创建成功（状态由PENDING变为RUNNING）
if (ssStatus.dwCurrentState == SERVICE_RUNNING)
{
printf("StartService SUCCESS.n");
return 1;
}
else
{
printf("nService not started. n");
printf(" Current State: %dn", ssStatus.dwCurrentState);
printf(" Exit Code: %dn", ssStatus.dwWin32ExitCode);
printf(" Service Specific Exit Code: %dn",
ssStatus.dwServiceSpecificExitCode);
printf(" Check Point: %dn", ssStatus.dwCheckPoint);
printf(" Wait Hint: %dn", ssStatus.dwWaitHint);
return 0;
}
}
/*************************************
* DWORD StopService( SC_HANDLE hSCM,
LPTSTR szServiceName,
BOOL fStopDependencies,
DWORD dwTimeout )
* 功能 停止服务
*
* 参数 SC_HANDLE hSCM SCM 句柄
* LPTSTR szServiceName 服务名
* BOOL fStopDependencies 是否结束依赖的服务
* DWORD dwTimeout 超时
**************************************/
DWORD StopService(SC_HANDLE hSCM,
LPTSTR szServiceName,
BOOL fStopDependencies,
DWORD dwTimeout )
{
SERVICE_STATUS_PROCESS ssp;
SERVICE_STATUS ss;
DWORD dwStartTime = GetTickCount();
DWORD dwBytesNeeded;
// 打开服务
SC_HANDLE hService = OpenService(
hSCM, // SCM 句柄
szServiceName, // 服务名
SERVICE_ALL_ACCESS);
// 查询状态，确定是否已经停止
if ( !QueryServiceStatusEx(
hService,
SC_STATUS_PROCESS_INFO,
(LPBYTE)&ssp,
sizeof(SERVICE_STATUS_PROCESS),
&dwBytesNeeded ) )
{
return GetLastError();
}
if ( ssp.dwCurrentState == SERVICE_STOPPED )
{
return ERROR_SUCCESS;
}
// 如果是 STOP_PENDING 状态，则只需等待
while ( ssp.dwCurrentState == SERVICE_STOP_PENDING )
{
Sleep( ssp.dwWaitHint );
// 循环查询，直到状态改变
if ( !QueryServiceStatusEx(
hService,
SC_STATUS_PROCESS_INFO,
(LPBYTE)&ssp,
sizeof(SERVICE_STATUS_PROCESS),
&dwBytesNeeded ) )
{
return GetLastError();
}
if ( ssp.dwCurrentState == SERVICE_STOPPED )
{
return ERROR_SUCCESS;
}
if ( GetTickCount() - dwStartTime > dwTimeout )
{
return ERROR_TIMEOUT;
}
}
// 先结束依赖服务
if ( fStopDependencies )
{
DWORD i;
DWORD dwBytesNeeded;
DWORD dwCount;
LPENUM_SERVICE_STATUS lpDependencies = NULL;
ENUM_SERVICE_STATUS ess;
SC_HANDLE hDepService;
// 使用 0 大小的 buf,获取buf的大小
// 如果 EnumDependentServices 直接返回成功，说明没有依赖服务
if ( !EnumDependentServices( hService, SERVICE_ACTIVE,
lpDependencies, 0, &dwBytesNeeded, &dwCount ) )
{
if ( GetLastError() != ERROR_MORE_DATA )
return GetLastError(); // Unexpected error
// 分配缓冲区存储依赖服务的数据
lpDependencies = (LPENUM_SERVICE_STATUS) HeapAlloc(
GetProcessHeap(), HEAP_ZERO_MEMORY, dwBytesNeeded );
if ( !lpDependencies )
return GetLastError();
__try {
// 获得依赖服务
if ( !EnumDependentServices( hService, SERVICE_ACTIVE,
lpDependencies, dwBytesNeeded, &dwBytesNeeded,
&dwCount ) )
return GetLastError();
for ( i = 0; i < dwCount; i++ )
{
ess = *(lpDependencies + i);
// 打开服务
hDepService = OpenService( hSCM, ess.lpServiceName,
SERVICE_STOP | SERVICE_QUERY_STATUS );
if ( !hDepService )
return GetLastError();
__try {
// 结束服务
if ( !ControlService( hDepService,
SERVICE_CONTROL_STOP,
&ss ) )
return GetLastError();
// 等待服务结束
while ( ss.dwCurrentState != SERVICE_STOPPED )
{
Sleep( ss.dwWaitHint );
if ( !QueryServiceStatusEx(
hDepService,
SC_STATUS_PROCESS_INFO,
(LPBYTE)&ssp,
sizeof(SERVICE_STATUS_PROCESS),
&dwBytesNeeded ) )
return GetLastError();
if ( ss.dwCurrentState == SERVICE_STOPPED )
break;
if ( GetTickCount() - dwStartTime > dwTimeout )
return ERROR_TIMEOUT;
}
}
__finally
{
// 关闭服务
CloseServiceHandle( hDepService );
}
}
}
__finally
{
// 释放内存
HeapFree( GetProcessHeap(), 0, lpDependencies );
}
}
}
// 所有的依赖服务已经结束，结束指定服务
if ( !ControlService( hService, SERVICE_CONTROL_STOP, &ss ) )
return GetLastError();
while ( ss.dwCurrentState != SERVICE_STOPPED )
{
Sleep( ss.dwWaitHint );
if ( !QueryServiceStatusEx(
hService,
SC_STATUS_PROCESS_INFO,
(LPBYTE)&ssp,
sizeof(SERVICE_STATUS_PROCESS),
&dwBytesNeeded ) )
return GetLastError();
if ( ss.dwCurrentState == SERVICE_STOPPED )
break;
if ( GetTickCount() - dwStartTime > dwTimeout )
return ERROR_TIMEOUT;
}
return ERROR_SUCCESS;
}
/*************************************
* BOOL ControlSampleService(DWORD fdwControl)
* 功能 向服务发送控制码
*
* 参数 DWORD fdwControl 控制码值
* SCM 句柄，服务名直接使用全局变量
**************************************/
BOOL ControlSampleService(DWORD fdwControl)
{
SERVICE_STATUS ssStatus;
DWORD fdwAccess;
DWORD dwStartTickCount, dwWaitTime;
// Access
switch (fdwControl)
{
case SERVICE_CONTROL_STOP:
fdwAccess = SERVICE_STOP;
break;
case SERVICE_CONTROL_PAUSE:
case SERVICE_CONTROL_CONTINUE:
fdwAccess = SERVICE_PAUSE_CONTINUE;
break;
case SERVICE_CONTROL_INTERROGATE:
fdwAccess = SERVICE_INTERROGATE;
break;
default:
fdwAccess = SERVICE_INTERROGATE;
}
// 打开服务
schService = OpenService(
schSCManager, // SCManager 句柄
szServiceName, // 服务名
fdwAccess); // 存取权限
if (schService == NULL)
{
printf("OpenService failed (%d)n", GetLastError());
return FALSE;
}
// 发送控制码
if (! ControlService(
schService, // 服务的句柄
fdwControl, // 控制码
&ssStatus) ) // 状态
{
printf("ControlService failed (%d)n", GetLastError());
return FALSE;
}
// 显示状态
printf("nStatus of Sample_Srv: n");
printf(" Service Type: 0x%xn", ssStatus.dwServiceType);
printf(" Current State: 0x%xn", ssStatus.dwCurrentState);
printf(" Controls Accepted: 0x%xn",
ssStatus.dwControlsAccepted);
printf(" Exit Code: %dn", ssStatus.dwWin32ExitCode);
printf(" Service Specific Exit Code: %dn",
ssStatus.dwServiceSpecificExitCode);
printf(" Check Point: %dn", ssStatus.dwCheckPoint);
printf(" Wait Hint: %dn", ssStatus.dwWaitHint);
return TRUE;
}
基于visual c++之windows核心编程代码分析（9）实现Windows服务并安装，控制
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转载自jacky-dai.iteye.com/blog/1836811
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