Windows服务:当用户登录时获取用户名
本文关键字:用户 获取 登录 Windows 服务 | 更新日期: 2023-09-27 17:54:51
我的Windows服务应该保存当前登录/注销的用户名。下面的代码为我工作,但没有保存用户名:
protected override void OnSessionChange(SessionChangeDescription changeDescription)
{
try
{
string user = "";
foreach (ManagementObject currentObject in _wmiComputerSystem.GetInstances())
{
user += currentObject.Properties["UserName"].Value.ToString().Trim();
}
switch (changeDescription.Reason)
{
case SessionChangeReason.SessionLogon:
WriteLog(Constants.LogType.CONTINUE, "Logon - Program continues: " + user);
OnContinue();
break;
case SessionChangeReason.SessionLogoff:
WriteLog(Constants.LogType.PAUSE, "Logoff - Program is paused: " + user);
OnPause();
break;
}
base.OnSessionChange(changeDescription);
}
catch (Exception exp)
{
WriteLog(Constants.LogType.ERROR, "Error");
}
}
编辑:foreach循环给了我一个错误:
消息:Access is denied。HRESULT异常:0x80070005(E_ACCESSDENIED))类型:System。UnauthorizedAccessException
但是在我看来,这段代码不是解决方案,因为它保存了所有登录到服务器的用户。
我在构建Windows Service时遇到了类似的问题。就像您一样,我有会话ID,需要获得相应的用户名。在几个不成功的解决方案之后,我遇到了这个特殊的答案,它激发了我的解决方案:
这是我的代码(它们都在一个类中;在我的例子中,继承了ServiceBase
的类
[DllImport("Wtsapi32.dll")]
private static extern bool WTSQuerySessionInformation(IntPtr hServer, int sessionId, WtsInfoClass wtsInfoClass, out IntPtr ppBuffer, out int pBytesReturned);
[DllImport("Wtsapi32.dll")]
private static extern void WTSFreeMemory(IntPtr pointer);
private enum WtsInfoClass
{
WTSUserName = 5,
WTSDomainName = 7,
}
private static string GetUsername(int sessionId, bool prependDomain = true)
{
IntPtr buffer;
int strLen;
string username = "SYSTEM";
if (WTSQuerySessionInformation(IntPtr.Zero, sessionId, WtsInfoClass.WTSUserName, out buffer, out strLen) && strLen > 1)
{
username = Marshal.PtrToStringAnsi(buffer);
WTSFreeMemory(buffer);
if (prependDomain)
{
if (WTSQuerySessionInformation(IntPtr.Zero, sessionId, WtsInfoClass.WTSDomainName, out buffer, out strLen) && strLen > 1)
{
username = Marshal.PtrToStringAnsi(buffer) + "''" + username;
WTSFreeMemory(buffer);
}
}
}
return username;
}
有了上面的代码在你的类中,你可以简单地通过调用
在你重写的方法中获得用户名string username = GetUsername(changeDescription.SessionId);
终于有办法了。在windows服务方法中,提供了会话id。因此,有了这个会话id,我们可以执行powershell命令'quser'并获取当前登录/注销服务器的用户。如何在多用户环境下使用。net从windows服务中获取当前windows用户名
这就是我们要创建的函数:
private string GetUsername(int sessionID)
{
try
{
Runspace runspace = RunspaceFactory.CreateRunspace();
runspace.Open();
Pipeline pipeline = runspace.CreatePipeline();
pipeline.Commands.AddScript("Quser");
pipeline.Commands.Add("Out-String");
Collection<PSObject> results = pipeline.Invoke();
runspace.Close();
StringBuilder stringBuilder = new StringBuilder();
foreach (PSObject obj in results)
{
stringBuilder.AppendLine(obj.ToString());
}
foreach (string User in stringBuilder.ToString().Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries).Skip(1))
{
string[] UserAttributes = User.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);
if (UserAttributes.Length == 6)
{
if (int.Parse(UserAttributes[1].Trim()) == sessionID)
{
return UserAttributes[0].Replace(">", string.Empty).Trim();
}
}
else
{
if (int.Parse(UserAttributes[2].Trim()) == sessionID)
{
return UserAttributes[0].Replace(">", string.Empty).Trim();
}
}
}
}
catch (Exception exp)
{
// Error handling
}
return "Undefined";
}
这是windows服务功能:
protected override void OnSessionChange(SessionChangeDescription changeDescription)
{
try
{
switch (changeDescription.Reason)
{
case SessionChangeReason.SessionLogon:
string user = GetUsername(changeDescription.SessionId);
WriteLog("Logon - Program continue" + Environment.NewLine +
"User: " + user + Environment.NewLine + "Sessionid: " + changeDescription.SessionId);
//.....
你可以试试:
System.Security.Principal.WindowsIdentity.GetCurrent();
另一个选项,参见:从服务获取登录用户名