Windows服务访问控制


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服务控制在win32用户层系统编程中比较重要,一般用于创建自启动项或加载驱动,这样的话启动服务就是载入驱动,停止服务就是卸载驱动,极大方便了驱动控制。下面贴一个服务控制代码,可用于方便的控制服务。

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#pragma once
#ifndef __HSERVER_HPP__
#define __HSERVER_HPP__
 
#include <Windows.h>
 
class hService {
    SC_HANDLE h_scm = NULL, h_service = NULL;
    QUERY_SERVICE_CONFIG *h_qsc = NULL;
    SERVICE_STATUS h_status;
 
public:
    hService (LPCTSTR serv_name) {
        h_qsc = (LPQUERY_SERVICE_CONFIG)new BYTE [8 * 1024];
        if ((h_scm = ::OpenSCManager (NULL, NULL, SC_MANAGER_ALL_ACCESS)) && serv_name && serv_name[0]) {
            h_service = ::OpenService (h_scm, serv_name, SERVICE_ALL_ACCESS);
        }
    }
    ~hService () {
        delete h_qsc;
        if (h_service) ::CloseServiceHandle (h_service);
        if (h_scm) ::CloseServiceHandle (h_scm);
    }
 
    //服务是否正在运行
    BOOL is_running () {
        if (!h_service) return FALSE;
        if (::QueryServiceStatus (h_service, &h_status)) {
            if (h_status.dwCurrentState == SERVICE_RUNNING) return TRUE;
        }
        return FALSE;
    }
 
    //服务是否已停止
    BOOL is_stopped () {
        if (!h_service) return FALSE;
        if (::QueryServiceStatus (h_service, &h_status)) {
            if (h_status.dwCurrentState == SERVICE_STOPPED) return TRUE;
        }
        return FALSE;
    }
 
    //服务是否已暂停
    BOOL is_pause () {
        if (!h_service) return FALSE;
        if (::QueryServiceStatus (h_service, &h_status)) {
            if (h_status.dwCurrentState == SERVICE_PAUSED) return TRUE;
        }
        return FALSE;
    }
 
    //服务是否自动启动
    BOOL is_auto_run () {
        DWORD d;
        if (!h_service) return FALSE;
        if (::QueryServiceConfig (h_service, h_qsc, 8 * 1024, &d)) {
            return h_qsc->dwStartType <= 2;
        }
        return FALSE;
    }
 
    //启动服务
    BOOL start () {
        if (!h_service) return FALSE;
        if (is_running ()) return TRUE;
        return ::StartService (h_service, NULL, NULL);
    }
 
    //停止服务
    BOOL stop () {
        if (!h_service) return FALSE;
        if (is_stopped ()) return TRUE;
        return ::ControlService (h_service, SERVICE_CONTROL_STOP, &h_status);
    }
 
    //暂停服务
    BOOL pause () {
        if (!h_service) return FALSE;
        if (is_running ()) return ::ControlService (h_service, SERVICE_CONTROL_PAUSE, &h_status);
        return TRUE;
    }
 
    //恢复服务
    BOOL resume () {
        if (!h_service) return FALSE;
        if (is_pause ()) return ::ControlService (h_service, SERVICE_CONTROL_CONTINUE, &h_status);
        return is_running ();
    }
 
    //设置自动启动服务
    BOOL auto_start () {
        if (!h_service) return FALSE;
        if (is_auto_run ()) return TRUE;
        SC_LOCK sclLock = ::LockServiceDatabase (h_scm);
        BOOL bRet = ::ChangeServiceConfig (h_service, SERVICE_NO_CHANGE, SERVICE_AUTO_START, SERVICE_NO_CHANGE, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
        if (sclLock) ::UnlockServiceDatabase (sclLock);
        return bRet;
    }
 
    //设置手动启动服务
    BOOL demand_start () {
        if (!h_service) return FALSE;
        if (!is_auto_run ()) return TRUE;
        SC_LOCK sclLock = ::LockServiceDatabase (h_scm);
        BOOL bRet = ::ChangeServiceConfig (h_service, SERVICE_NO_CHANGE, SERVICE_DEMAND_START, SERVICE_NO_CHANGE, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
        if (sclLock) ::UnlockServiceDatabase (sclLock);
        return bRet;
    }
 
    //创建服务
    static hService *create_service (LPCTSTR serv_name, LPCTSTR display_name, DWORD service_type, LPCTSTR path) {
        hService *service = new hService (NULL);
        service->h_service = ::CreateService (service->h_scm, serv_name, display_name, SC_MANAGER_ALL_ACCESS, service_type, SERVICE_DEMAND_START, SERVICE_ERROR_IGNORE, path, NULL, NULL, NULL, NULL, NULL);
        return service;
    }
 
    //删除服务
    BOOL delete_service () {
        if (::DeleteService (h_service)) {
            h_service = NULL;
            return TRUE;
        }
        return FALSE;
    }
};
#endif //__HSERVER_HPP__

创建头文件,引入以上代码之后,就可以方便进行服务控制了。调用方式在代码中已有注释。