获取本地服务列表

最新推荐文章于 2024-12-05 08:54:25 发布

zcgzdhxm

最新推荐文章于 2024-12-05 08:54:25 发布

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文章标签： null service manager include

本文链接：https://blog.youkuaiyun.com/zcgzdhxm/article/details/4823506

本文介绍了一个使用C++实现的程序，该程序通过调用Windows API函数来枚举本地计算机上的服务列表。其中包括如何初始化服务管理器句柄、确定所需缓冲区大小、分配内存以及打印服务名称等详细步骤。

#include <Windows.h>
#include <iostream>
#define ERRORINGETLOCALSERVICELIST 1
DWORD GetLocalServiceList()
{
    DWORD dwErrorCode = NULL;
    DWORD dwRet = NULL;
    DWORD dwBufSize = NULL;
    DWORD dwByteNeeded = NULL;
    DWORD dwServicesReturned = NULL;
    DWORD dwServiceCoutRet = NULL;
    DWORD dwResumeHandle = 0;
    DWORD dwReturn = NULL;
    BOOL bRet = false;
    ENUM_SERVICE_STATUS_PROCESS *lpServicesBuffer = NULL;
    //开启服务管理器
    SC_HANDLE sc_hHandle = OpenSCManager(NULL, NULL, SC_MANAGER_ENUMERATE_SERVICE);
    if(NULL == sc_hHandle)
    {
        dwErrorCode = GetLastError();
        printf("Error in OpenSCManager/n");
        dwReturn = ERRORINGETLOCALSERVICELIST;
        goto END;
    }
    //第一次调用EnumServicesStatusEx,使得函数返回（dwByteNeeded）确切的bpServicesBuffer空间需求
    dwResumeHandle = 0;
    bRet = EnumServicesStatusEx(sc_hHandle, SC_ENUM_PROCESS_INFO, SERVICE_WIN32, SERVICE_STATE_ALL, NULL, 0, &dwByteNeeded, &dwServiceCoutRet, &dwResumeHandle, NULL);
   
    //分配获得服务列表所需的空间
    lpServicesBuffer = (ENUM_SERVICE_STATUS_PROCESS*)malloc(dwByteNeeded);
    if(NULL == lpServicesBuffer)
    {
        printf("Error in mallco a buffer./n");
        dwReturn = ERRORINGETLOCALSERVICELIST;
        goto END;
    }
    SecureZeroMemory(lpServicesBuffer, dwByteNeeded);
    //获取服务列表
    dwBufSize = dwByteNeeded;
    bRet = EnumServicesStatusEx(sc_hHandle, SC_ENUM_PROCESS_INFO, SERVICE_WIN32, SERVICE_STATE_ALL, (PBYTE)lpServicesBuffer, dwBufSize, &dwByteNeeded, &dwServiceCoutRet, &dwResumeHandle, NULL);
    if(0 == bRet)
    {
        printf("Error in second enum./n");
        dwReturn = ERRORINGETLOCALSERVICELIST;
        goto END;
    }
    for(DWORD i=0; i<dwServiceCoutRet; i++)
    {
        printf("%d: ==========================================/n", i+1);
        printf("lpDisplayName: %ws/n", lpServicesBuffer[i].lpDisplayName);
        printf("lpServiceName: %ws/n", lpServicesBuffer[i].lpServiceName);
        printf("ServiceStatusProcess: %d/n", lpServicesBuffer[i].ServiceStatusProcess.dwCurrentState);
    }
    dwReturn = ERROR_SUCCESS;
END:
    if(NULL !=lpServicesBuffer)
    {
        free(lpServicesBuffer);
        lpServicesBuffer = NULL;
    }
    getchar();
    return dwReturn;
}
int _tmain(int argc, _TCHAR* argv[])
{
    //本地中文化，防止服务名称为中文
    setlocale(LC_ALL, "chs");
    GetLocalServiceList();
    return 0;
}