Windows服务编程

我们看到有什么360主动防御服务,Google更新服务等,我们也写个简单的服务吧

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#include <stdio.h>
#include <windows.h>

//毫秒
#define SLEEP_TIME 1000
#define FILE_PATH "D:\\test.txt"
//服务状态
SERVICE_STATUS m_ServiceState;
//服务状态句柄
SERVICE_STATUS_HANDLE m_ServiceHandle;
void WINAPI ServiceMain(int argc, char** argv);
void WINAPI ServiceCtrlHandler(DWORD Opcode);
int WriteToLog(char* str);
BOOL bRunning;

int main() {

SERVICE_TABLE_ENTRY stentry[2];
stentry[0].lpServiceName = "demo";
stentry[0].lpServiceProc = (LPSERVICE_MAIN_FUNCTIONA)ServiceMain;
//服务的最后一项要设置为NULL
stentry[1].lpServiceName = NULL;
stentry[1].lpServiceProc = NULL;

StartServiceCtrlDispatcher(stentry);
//system("pause");
return 0;
}

//服务主函数
void WINAPI ServiceMain(int argc, char** argv) {
MEMORYSTATUS memstatus;
char str[100];
int availMem;

//服务类型和状态
m_ServiceState.dwServiceType = SERVICE_WIN32;
m_ServiceState.dwCurrentState = SERVICE_START_PENDING;
m_ServiceState.dwControlsAccepted = SERVICE_CONTROL_SHUTDOWN | SERVICE_CONTROL_STOP;
m_ServiceState.dwWin32ExitCode = 0;
m_ServiceState.dwServiceSpecificExitCode = 0;
//下面这两个基本不需要,除非服务启动时间很长
m_ServiceState.dwCheckPoint = 0;
m_ServiceState.dwWaitHint = 0;

//注册服务控制函数
m_ServiceHandle = RegisterServiceCtrlHandler("demo", (LPHANDLER_FUNCTION)ServiceCtrlHandler);
if (m_ServiceHandle == NULL) {
WriteToLog("RegisterServiceCtrlHandler failed");
return;
}
WriteToLog("RegisterServiceCtrlHandler success");

//更新服务状态
m_ServiceState.dwCurrentState = SERVICE_RUNNING;
SetServiceStatus(m_ServiceHandle, &m_ServiceState);


memset(str, '\0', 100);
bRunning = TRUE;
while (bRunning)
{
GlobalMemoryStatus(&memstatus);
availMem = memstatus.dwAvailVirtual / 1024 / 1024;
sprintf_s(str, 50 ,"available memory is %d MB, use %d %%", availMem, memstatus.dwMemoryLoad);
WriteToLog(str);
Sleep(SLEEP_TIME);

}
WriteToLog("service stop!");
}

//服务控制函数(启动,暂停等)
void WINAPI ServiceCtrlHandler(DWORD Opcode) {
switch (Opcode)
{
case SERVICE_CONTROL_STOP:
bRunning = FALSE;
m_ServiceState.dwCurrentState = SERVICE_STOPPED;
break;
case SERVICE_CONTROL_SHUTDOWN:
bRunning = FALSE;
m_ServiceState.dwCurrentState = SERVICE_STOPPED;
break;
default:
break;
}
SetServiceStatus(m_ServiceHandle, &m_ServiceState);
}

int WriteToLog(char * str)
{
FILE* pFile;
fopen_s(&pFile, FILE_PATH, "a+");
fprintf_s(pFile, "%s\n", str);
fclose(pFile);
return 0;
}

编译并生成后可以用sc命令安装

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sc create giantbranchDemo binpath= D:\demo.exe

我们再打开服务即可看到

我们可以直接在上面的图形界面启动,也可以sc启动

启动停止与删除命令

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sc start 
sc stop
sc delete

如果程序本身自带启动和删除可以使用下面的:

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#include <stdio.h>
#include <windows.h>

//毫秒
#define SLEEP_TIME 1000
#define FILE_PATH "C:\\test.txt"
#define SERVICENAME "practice"
//服务状态
SERVICE_STATUS m_ServiceState;
//服务状态句柄
SERVICE_STATUS_HANDLE m_ServiceHandle;
void WINAPI ServiceMain(int argc, char** argv);
void WINAPI ServiceCtrlHandler(DWORD Opcode);
int WriteToLog(char* str);
BOOL InstallService();
void DelService();
BOOL bRunning;

int main(int argc, char** argv[]) {
SERVICE_TABLE_ENTRY stentry[2];
if (argc == 2)
{
if (!strcmp(argv[1], "-i"))
{
InstallService();
}else if (!strcmp(argv[1], "-d"))
{
DelService();
}
return 0;
}

stentry[0].lpServiceName = SERVICENAME;
stentry[0].lpServiceProc = (LPSERVICE_MAIN_FUNCTIONA)ServiceMain;
//服务的最后一项要设置为NULL
stentry[1].lpServiceName = NULL;
stentry[1].lpServiceProc = NULL;

StartServiceCtrlDispatcher(stentry);
return 0;
}

//服务主函数
void WINAPI ServiceMain(int argc, char** argv) {
MEMORYSTATUS memstatus;
char str[100];
int availMem;

//服务类型和状态
m_ServiceState.dwServiceType = SERVICE_WIN32;
m_ServiceState.dwCurrentState = SERVICE_START_PENDING;
m_ServiceState.dwControlsAccepted = SERVICE_CONTROL_SHUTDOWN | SERVICE_CONTROL_STOP;
m_ServiceState.dwWin32ExitCode = 0;
m_ServiceState.dwServiceSpecificExitCode = 0;
//下面这两个基本不需要,除非服务启动时间很长
m_ServiceState.dwCheckPoint = 0;
m_ServiceState.dwWaitHint = 0;

//注册服务控制函数
m_ServiceHandle = RegisterServiceCtrlHandler(SERVICENAME, (LPHANDLER_FUNCTION)ServiceCtrlHandler);
if (m_ServiceHandle == NULL) {
WriteToLog("RegisterServiceCtrlHandler failed");
return;
}
WriteToLog("RegisterServiceCtrlHandler success");

//更新服务状态
m_ServiceState.dwCurrentState = SERVICE_RUNNING;
SetServiceStatus(m_ServiceHandle, &m_ServiceState);


memset(str, '\0', 100);
bRunning = TRUE;
GlobalMemoryStatus(&memstatus);
availMem = memstatus.dwAvailVirtual / 1024 / 1024;
sprintf_s(str, 50, "available memory is %d MB, use %d %%", availMem, memstatus.dwMemoryLoad);
WriteToLog(str);
WriteToLog("service is Running!");
}

//服务控制函数(启动,暂停等)
void WINAPI ServiceCtrlHandler(DWORD Opcode) {
switch (Opcode)
{
case SERVICE_CONTROL_STOP:
case SERVICE_CONTROL_SHUTDOWN:
bRunning = FALSE;
m_ServiceState.dwWin32ExitCode = 0;
m_ServiceState.dwCurrentState = SERVICE_STOPPED;
break;
default:
break;
}
SetServiceStatus(m_ServiceHandle, &m_ServiceState);
}

int WriteToLog(char * str)
{
FILE* pFile;
fopen_s(&pFile, FILE_PATH, "a+");
fprintf_s(pFile, "%s\n", str);
fclose(pFile);
return 0;
}

BOOL InstallService()
{
char strDir[1024];
SC_HANDLE scHandler,schService;
LPCTSTR lpszBinaryPathName;
//GetCurrentDirectory(1024, strDir);
GetModuleFileName(NULL, strDir, 1024);
printf("%s\n", strDir);
lpszBinaryPathName = strDir;
scHandler = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
if (scHandler == NULL)
{
printf("open scmanager failed! May be you don't have the privilage?");
}
schService = CreateService(scHandler, SERVICENAME, SERVICENAME,
SERVICE_ALL_ACCESS,
SERVICE_WIN32_OWN_PROCESS,
SERVICE_AUTO_START,
SERVICE_ERROR_NORMAL,
lpszBinaryPathName,
NULL,
NULL,
NULL,
NULL,
NULL
);
if (schService == NULL)
{
printf("create service failed~");
return FALSE;
}
CloseServiceHandle(schService);
CloseServiceHandle(scHandler);
return TRUE;
}

void DelService()
{
SC_HANDLE scHandler;
SC_HANDLE schService;
SERVICE_STATUS status;
BOOL isSuccess;
DWORD errCode;

scHandler = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
if (scHandler == NULL)
{
printf("open scmanager failed! May be you don't have the privilage?");
return;
}
schService = OpenService(scHandler, SERVICENAME, SC_MANAGER_ALL_ACCESS | DELETE);
if (schService == NULL)
{
errCode = GetLastError();
printf("OpenService failed! code:%d\n", errCode);
return;
}
isSuccess = QueryServiceStatus(schService, &status);
if (!isSuccess)
{
printf("QueryServiceStatus failed!");
return;
}
if (status.dwCurrentState != SERVICE_STOPPED)
{
isSuccess = ControlService(schService, SERVICE_CONTROL_STOP, &status);
if (!isSuccess)
{
printf("Stop Service failed!");
return;
}
}
isSuccess = DeleteService(schService);
if (!isSuccess)
{
printf("DeleteService failed");
return;
}
else {
printf("DeleteService success");
}
CloseServiceHandle(scHandler);
CloseServiceHandle(schService);

}
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