如何使用远程计算机上的状态登录用户

Question

我正在寻找一种方法来获取在远程计算机上登录的用户。我很想知道他们是在当地还是远程登录，但最重要的是我必须知道他们的状态。我在网上看到了一些用VB编写的答案，但我需要在c＃中使用它。在markdmak answer here中给出的解决方案看起来是一个好的开始，但它在VB中，它只寻找远程会话。我有这段代码，这可能是一个开始，但我想将LogonId耦合到用户名并查看其状态：

string fqdn = ""; // set!!!    
ConnectionOptions options = new ConnectionOptions();
options.EnablePrivileges = true;
// To connect to the remote computer using a different account, specify these values:
// these are needed in dev environment
options.Username = ConfigurationManager.AppSettings["KerberosImpersonationUser"];
options.Password = ConfigurationManager.AppSettings["KerberosImpersonationPassword"];
options.Authority = "ntlmdomain:" + ConfigurationManager.AppSettings["KerberosImpersonationDomain"];

ManagementScope scope = new ManagementScope("\\\\" + fqdn + "\\root\\CIMV2", options);
try
{
    scope.Connect();
}
catch (Exception ex)
{
    if (ex.Message.StartsWith("The RPC server is unavailable"))
    {
        // The Remote Procedure Call server is unavailable
        // cannot check for logged on users
        return false;
    }
    else
    {
        throw ex;
    }
}

SelectQuery query = new SelectQuery("Select * from Win32_LogonSession");
ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, query);
ManagementObjectCollection results = searcher.Get();
bool returnVal = false;
foreach (ManagementObject os in results)
{
    try
    {
        if (os.GetPropertyValue("LogonId").ToString() != null && os.GetPropertyValue("LogonId").ToString() != "")
        {
            returnVal = true;
        }
    }
    catch (NullReferenceException)
    {
        continue;
    }
}
return returnVal;
}

我真正需要和找不到的是一种让远程机器上的所有用户及其状态的方式，即：活动，断开连接，注销等。

Answer 1

您可以将Win32_LogonSession WMI类过滤用于LogonType属性，值为2（交互式）

试试这个样本

using System;
using System.Collections.Generic;
using System.Management;
using System.Text;

namespace GetWMI_Info
{
class Program
{

    static void Main(string[] args)
    {
        try
        {
            string ComputerName = "remote-machine";
            ManagementScope Scope;

            if (!ComputerName.Equals("localhost", StringComparison.OrdinalIgnoreCase))
            {
                ConnectionOptions Conn = new ConnectionOptions();
                Conn.Username = "username";
                Conn.Password = "password";
                Conn.Authority = "ntlmdomain:DOMAIN";
                Scope = new ManagementScope(String.Format("\\\\{0}\\root\\CIMV2", ComputerName), Conn);
            }
            else
                Scope = new ManagementScope(String.Format("\\\\{0}\\root\\CIMV2", ComputerName), null);

            Scope.Connect();
            ObjectQuery Query = new ObjectQuery("SELECT LogonId  FROM Win32_LogonSession Where LogonType=2");
            ManagementObjectSearcher Searcher = new ManagementObjectSearcher(Scope, Query);

            foreach (ManagementObject WmiObject in Searcher.Get())
            {
                Console.WriteLine("{0,-35} {1,-40}", "LogonId", WmiObject["LogonId"]);// String
                ObjectQuery LQuery = new ObjectQuery("Associators of {Win32_LogonSession.LogonId=" + WmiObject["LogonId"] + "} Where AssocClass=Win32_LoggedOnUser Role=Dependent");
                ManagementObjectSearcher LSearcher = new ManagementObjectSearcher(Scope, LQuery);
                foreach (ManagementObject LWmiObject in LSearcher.Get())
                {
                    Console.WriteLine("{0,-35} {1,-40}", "Name", LWmiObject["Name"]);                    
                }
            }
        }
        catch (Exception e)
        {
            Console.WriteLine(String.Format("Exception {0} Trace {1}", e.Message, e.StackTrace));
        }
        Console.WriteLine("Press Enter to exit");
        Console.Read();
    }
}
}

Answer 2

@RRUZ让我开始，但Associators查询不适用于远程机器上有很多Win32_LoggedOnUser对象（不知道为什么）。没有返回任何结果。

我还需要远程桌面会话，所以我使用LogonType“10”会话，而我的ConnectionOptions是不同的

我用WmiObject.GetRelationships("Win32_LoggedOnUser")替换了Associators查询，速度提高了很多，结果就在那里。

    private void btnUnleash_Click(object sender, EventArgs e)
    {
        string serverName = "serverName";
        foreach (var user in GetLoggedUser(serverName))
        {
            dataGridView1.Rows.Add(serverName, user);
        }            
    }   

    private List<string> GetLoggedUser(string machineName)
    { 
        List<string> users = new List<string>();
        try
        {
            var scope = GetManagementScope(machineName);
            scope.Connect();
            var Query = new SelectQuery("SELECT LogonId  FROM Win32_LogonSession Where LogonType=10");
            var Searcher = new ManagementObjectSearcher(scope, Query);
            var regName = new Regex(@"(?<=Name="").*(?="")");

            foreach (ManagementObject WmiObject in Searcher.Get())
            {
                foreach (ManagementObject LWmiObject in WmiObject.GetRelationships("Win32_LoggedOnUser"))
                {
                    users.Add(regName.Match(LWmiObject["Antecedent"].ToString()).Value);
                }
            }
        }
        catch (Exception ex)
        {
            users.Add(ex.Message);
        }

        return users;
    }

    private static ManagementScope GetManagementScope(string machineName)
    {
        ManagementScope Scope;

        if (machineName.Equals("localhost", StringComparison.OrdinalIgnoreCase))
            Scope = new ManagementScope(String.Format("\\\\{0}\\root\\CIMV2", "."), GetConnectionOptions());
        else
        {
            Scope = new ManagementScope(String.Format("\\\\{0}\\root\\CIMV2", machineName), GetConnectionOptions());
        }
        return Scope;
    }

    private static ConnectionOptions GetConnectionOptions()
    {
        var connection = new ConnectionOptions
        {
            EnablePrivileges = true,
            Authentication = AuthenticationLevel.PacketPrivacy,
            Impersonation = ImpersonationLevel.Impersonate,
        };
        return connection;
    }