7

我正在寻找一种方法来获取在远程计算机上登录的用户。我很想知道他们是本地登录还是远程登录，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，但我需要它在c#中。markdmak answer here中给出的解决方案看起来是一个好的开始，但它是在 VB 中，它只查找远程会话。我有这段代码，可以作为开始，但我想将 LogonId 与用户名耦合并查看其状态：

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;
}

我真正需要但找不到的是一种让所有用户在远程机器上及其状态的方法，意思是：活动、断开连接、注销等。

4

2 回答 2

7

您可以对值为 2（交互式）Win32_LogonSession的属性使用 WMI 类过滤LogonType

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();
    }
}
}
于 2013-01-09T02:12:36.063 回答
4

@RRUZ 让我开始了，但Associators查询在有很多Win32_LoggedOnUser对象的远程机器上不起作用（不知道为什么）。没有返回任何结果。

我还需要远程桌面会话，所以我使用了 LogonType "10" 会话，我ConnectionOptions的不同

我将关联查询替换为WmiObject.GetRelationships("Win32_LoggedOnUser")，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;
    }
于 2015-03-20T13:54:16.120 回答