使用 C# 检查在远程计算机上运行的服务的状态

Question

我正在使用以下代码。

ServiceController MyController = new ServiceController();
MyController.MachineName = server_txt.Text.Trim();
MyController.ServiceName = "Service1";

string msg = MyController.Status.ToString();
Label1.Text = msg;

此代码适用于我可以访问的网络计算机。 如何更改它以使其适用于使用凭据的不同域中的系统？

Answer 1

如果您使用 WMI，则可以在“ConnectionOptions”中设置凭据。

ConnectionOptions op = new ConnectionOptions();
op.Username = "Domain\\Domainuser";
op.Password = "password";
ManagementScope scope = new ManagementScope(@"\\Servername.Domain\root\cimv2", op);
scope.Connect();
ManagementPath path = new ManagementPath("Win32_Service");
ManagementClass services;
services = new ManagementClass(scope, path, null);

foreach (ManagementObject service in services.GetInstances())
{

if (service.GetPropertyValue("State").ToString().ToLower().Equals("running"))
{ // Do something }

}

Answer 2

MSDN 是你的朋友。:)

如果您确实在该机器上拥有管理员权限，则此代码将正常运行：

using System.ServiceProcess;

ServiceController sc = new ServiceController("YourService", "MachineName");
if (sc.Status.Equals(ServiceControllerStatus.Stopped) || 
    sc.Status.Equals(ServiceControllerStatus.StopPending))
{
    // it is stopped
}

否则，正如在另一条评论中提到的，如果您运行的帐户在该机器上没有管理员权限，您可能必须通过模拟进行设置，如下所示：

string userName = "domain\\user"; // there's really just one slash, 
//but you have to escape it if hard-coding.. 
//if brought in by a text box, it would be just domain\user

string password = "whatever";

WindowsImpersonationContext adminContext = Impersonation.getWic(userName, password);
if (adminContext != null)
{
   try
   {
        ServiceController sc = new ServiceController("YourService", "MachineName");
        if (sc.Status.Equals(ServiceControllerStatus.Stopped) || 
            sc.Status.Equals(ServiceControllerStatus.StopPending))
        {
            // it is stopped
        }
    }
    catch (Exception ex)
    {
        Console.Out.WriteLine("\nUnable to set profile to Mandatory:\n\t" + ex.Message);
        Impersonation.endImpersonation();
        adminContext.Undo();
    }
    finally
    {
        Impersonation.endImpersonation();
        // The above line just basically does this on the tokens --            
        //if (tokenHandle != IntPtr.Zero) CloseHandle(tokenHandle);
        adminContext.Undo();
    }
}

这是我单独的 Impersonation 类。 它有 2 个主要入口点， getWic()和doImpersonation() -- getWic()将采用一个看起来像domain\\user\u003c/code>或machinename\\user\u003c/code> ，并将它们拆分为它们的组成部分，然后将其交给doImpersonation() ，而doImpersonation()接受已经拆分的部分，如果你有它并且不需要getWic()的代码。 两者都返回一个WindowsImpersonationContext 。

using System;
using System.Data;
using System.Configuration;
using System.Security.Permissions;
using System.Security.Principal;
using System.Runtime.InteropServices;

[assembly: SecurityPermissionAttribute(SecurityAction.RequestMinimum, UnmanagedCode = true)]
[assembly: PermissionSetAttribute(SecurityAction.RequestMinimum, Name = "FullTrust")]
public class Impersonation
{
    [DllImport("advapi32.dll", EntryPoint = "LogonUser")]
    public static extern bool LogonUser(
        string lpszUsername,
        string lpszDomain,
        string lpszPassword,
        int dwLogonType,
        int dwLogonProvider,
        ref IntPtr phToken);

    [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    public extern static bool DuplicateToken(IntPtr ExistingTokenHandle,
        int SECURITY_IMPERSONATION_LEVEL, ref IntPtr DuplicateTokenHandle);

    [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
    public extern static bool CloseHandle(IntPtr handle);

    // Declare the Logon Types as constants
    const int LOGON32_LOGON_INTERACTIVE = 2;
    const int LOGON32_LOGON_NETWORK = 3;
    const int LOGON32_LOGON_BATCH = 4;
    const int LOGON32_LOGON_SERVICE = 5;
    const int LOGON32_LOGON_UNLOCK = 7;
    const int LOGON32_LOGON_NETWORK_CLEARTEXT = 8; // Win2K or higher   
    const int LOGON32_LOGON_NEW_CREDENTIALS = 9; // Win2K or higher

    // Declare the Logon Providers as constants
    const int LOGON32_PROVIDER_DEFAULT = 0;
    const int LOGON32_PROVIDER_WINNT50 = 3;
    const int LOGON32_PROVIDER_WINNT40 = 2;
    const int LOGON32_PROVIDER_WINNT35 = 1;

    // Declare the Impersonation Levels as constants
    const int SecurityAnonymous = 0;
    const int SecurityIdentification = 1;
    const int SecurityImpersonation = 2;
    const int SecurityDelegation = 3;

    private static WindowsIdentity newId;
    private static IntPtr tokenHandle = new IntPtr(0);
    private static IntPtr dupeTokenHandle = new IntPtr(0);

    [PermissionSetAttribute(SecurityAction.Demand, Name = "FullTrust")]
    public static WindowsImpersonationContext doImpersonation(string svcUserName, string domainName, string password)
    {
        // Initialize tokens
        tokenHandle = IntPtr.Zero;
        dupeTokenHandle = IntPtr.Zero;

        // Call LogonUser to obtain a handle to an access token
        bool returnValue = LogonUser(svcUserName, domainName, password,
        LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_WINNT50, ref tokenHandle);

        if (returnValue == false)
        {
            int ret = Marshal.GetLastWin32Error();

            //Check for errors
            if (ret != NO_ERROR)
                throw new Exception("LogonUser failed with error code : " + GetError(ret));
        }

        bool retVal = DuplicateToken(tokenHandle, SecurityImpersonation, ref dupeTokenHandle);
        if (retVal == false)
        {
            CloseHandle(tokenHandle);
            throw new Exception("Exception thrown in trying to duplicate token.");
        }
        else
        {
            // Begin Impersonation
            bool bRetVal = DuplicateToken(tokenHandle,
            (int)SecurityImpersonation, ref dupeTokenHandle);

            newId = new WindowsIdentity(dupeTokenHandle);
            WindowsImpersonationContext impersonatedUser = newId.Impersonate();
            return impersonatedUser;
        }
    }

    public static void endImpersonation()
    {
        if (dupeTokenHandle != IntPtr.Zero)
            CloseHandle(dupeTokenHandle);
        if (tokenHandle != IntPtr.Zero)
            CloseHandle(tokenHandle);
    }

    public static WindowsImpersonationContext getWic(string userNameStringFromTextbox, string password)
    {
        try
        {
            // Establish impersonation
            string svcUser = userNameStringFromTextbox;
            string[] arrUser = new string[2];
            arrUser = svcUser.Split('\\');
            string domain = arrUser[0];
            string svcUserName = arrUser[1];

            // Get Password:  Convert from Base-64 String to decrypted string            
            //string keyLength = ConfigurationManager.AppSettings["keyLength"].ToString();
            //string keyLocation = ConfigurationManager.AppSettings["keyLocation"].ToString();
            //password = RSAEncrypt.DecryptData(password, keyLength, keyLocation);

            WindowsImpersonationContext wic = doImpersonation(svcUserName, domain, password);
            return wic;
        }
        catch (Exception ex)
        {
            ErrorLog.ErrorRoutine(new Exception("getWic() Error: " + ex.ToString()), ErrorMessage.NOTIFY_APP_ERROR);
            return null;
        }
    }

    #region Errors
    const int NO_ERROR = 0;

    const int ERROR_ACCESS_DENIED = 5;
    const int ERROR_ALREADY_ASSIGNED = 85;
    const int ERROR_BAD_DEVICE = 1200;
    const int ERROR_BAD_NET_NAME = 67;
    const int ERROR_BAD_PROVIDER = 1204;
    const int ERROR_CANCELLED = 1223;
    const int ERROR_EXTENDED_ERROR = 1208;
    const int ERROR_INVALID_ADDRESS = 487;
    const int ERROR_INVALID_PARAMETER = 87;
    const int ERROR_INVALID_PASSWORD = 1216;
    const int ERROR_MORE_DATA = 234;
    const int ERROR_NO_MORE_ITEMS = 259;
    const int ERROR_NO_NET_OR_BAD_PATH = 1203;
    const int ERROR_NO_NETWORK = 1222;
    const int ERROR_SESSION_CREDENTIAL_CONFLICT = 1219;

    const int ERROR_BAD_PROFILE = 1206;
    const int ERROR_CANNOT_OPEN_PROFILE = 1205;
    const int ERROR_DEVICE_IN_USE = 2404;
    const int ERROR_NOT_CONNECTED = 2250;
    const int ERROR_OPEN_FILES = 2401;

    private struct ErrorClass
    {
        public int num;
        public string message;
        public ErrorClass(int num, string message)
        {
            this.num = num;
            this.message = message;
         }
    }

    private static ErrorClass[] ERROR_LIST = new ErrorClass[] {
        new ErrorClass(ERROR_ACCESS_DENIED, "Error: Access Denied"),
        new ErrorClass(ERROR_ALREADY_ASSIGNED, "Error: Already Assigned"),
        new ErrorClass(ERROR_BAD_DEVICE, "Error: Bad Device"),
        new ErrorClass(ERROR_BAD_NET_NAME, "Error: Bad Net Name"),
        new ErrorClass(ERROR_BAD_PROVIDER, "Error: Bad Provider"),
        new ErrorClass(ERROR_CANCELLED, "Error: Cancelled"),
        new ErrorClass(ERROR_EXTENDED_ERROR, "Error: Extended Error"),
        new ErrorClass(ERROR_INVALID_ADDRESS, "Error: Invalid Address"),
        new ErrorClass(ERROR_INVALID_PARAMETER, "Error: Invalid Parameter"),
        new ErrorClass(ERROR_INVALID_PASSWORD, "Error: Invalid Password"),
        new ErrorClass(ERROR_MORE_DATA, "Error: More Data"),
        new ErrorClass(ERROR_NO_MORE_ITEMS, "Error: No More Items"),
        new ErrorClass(ERROR_NO_NET_OR_BAD_PATH, "Error: No Net Or Bad Path"),
        new ErrorClass(ERROR_NO_NETWORK, "Error: No Network"),
        new ErrorClass(ERROR_SESSION_CREDENTIAL_CONFLICT, "Error: Credential Conflict"),
        new ErrorClass(ERROR_BAD_PROFILE, "Error: Bad Profile"),
        new ErrorClass(ERROR_CANNOT_OPEN_PROFILE, "Error: Cannot Open Profile"),
        new ErrorClass(ERROR_DEVICE_IN_USE, "Error: Device In Use"),
        new ErrorClass(ERROR_NOT_CONNECTED, "Error: Not Connected"),
        new ErrorClass(ERROR_OPEN_FILES, "Error: Open Files"),
    };

    private static string GetError(int errNum)
    {
        foreach (ErrorClass er in ERROR_LIST)
        {
            if (er.num == errNum) return er.message;
        }
        return "Error: Unknown, " + errNum;
    }
    #endregion
}

参考资料： ServiceController 类。 https://msdn.microsoft.com/en-us/library/system.serviceprocess.servicecontroller(v=vs.110).aspx

WindowsIdentity.Impersonate 方法。 https://msdn.microsoft.com/en-us/library/w070t6ka(v=vs.110).aspx

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