authpage.aspx

<% @ Page Language = "C#" %>
  <script runat = "server" >

  protected void dumpObject (object o, Table outputTable) {

    try {
      Type refl_WindowsIdenty = typeof (System.Security.Principal.WindowsIdentity);

      System.Reflection.MemberInfo[] refl_WindowsIdenty_members = o.GetType ().FindMembers (
        System.Reflection.MemberTypes.Property,
        System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance,
        delegate (System.Reflection.MemberInfo objMemberInfo, Object objSearch) { return true; },
        null);

      foreach (System.Reflection.MemberInfo currentMemberInfo in refl_WindowsIdenty_members) {
        TableRow r = new TableRow ();
        TableCell k = new TableCell ();
        TableCell v = new TableCell ();
        System.Reflection.MethodInfo getAccessorInfo = ((System.Reflection.PropertyInfo) currentMemberInfo).GetGetMethod ();

        k.Text = currentMemberInfo.Name;
        object value = getAccessorInfo.Invoke (o, null);
        if (typeof (IEnumerable).IsInstanceOfType (value) && !typeof (string).IsInstanceOfType (value)) {
          foreach (object item in (IEnumerable) value) {
            v.Text += item.ToString () + "<br />";
          }
        } else {
          v.Text = value.ToString ();
        }

        r.Cells.AddRange (new TableCell[] { k, v });
        outputTable.Rows.Add (r);
      }
    } catch { }

  }

protected void Page_Load (object sender, EventArgs e) {

  AuthMethod.Text = "Anonymous";
  AuthUser.Text = "none";

  //***** Authentication header type (Basic, Negotiate...etc)

  string AUTH_TYPE = Request.ServerVariables["AUTH_TYPE"];
  if (AUTH_TYPE.Length > 0) AuthMethod.Text = AUTH_TYPE;

  //***** Authenticated user
  string AUTH_USER = Request.ServerVariables["AUTH_USER"];
  if (AUTH_USER.Length > 0) AuthUser.Text = AUTH_USER;

  //***** If NEGOTIATE is used, assume KERBEROS is length of auth. header exceeds 1000 bytes

  if (AuthMethod.Text == "Negotiate") {
    string auth = Request.ServerVariables.Get ("HTTP_AUTHORIZATION");
    if ((auth != null) && (auth.Length > 1000))
      AuthMethod.Text = AuthMethod.Text + " (KERBEROS)";
    else
      AuthMethod.Text = AuthMethod.Text + " (NTLM)";
  }

  ThreadId.Text = System.Security.Principal.WindowsIdentity.GetCurrent ().Name;

  //set the process identity in the corresponding label
  dumpObject (System.Security.Principal.WindowsIdentity.GetCurrent (), tblProcessIdentity);

  System.Data.SqlClient.SqlConnection con = new System.Data.SqlClient.SqlConnection ("Server=labsql01;Database=master;Trusted_Connection=True;");
  try {
    con.Open ();
    System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand ("select spid, uid, login_time, program_name, nt_domain, nt_username, loginame from sys.sysprocesses where spid = @@spid");
    //	System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand("select auth_scheme from sys.dm_exec_connections where session_id= @@spid");
    cmd.Connection = con;
    System.Data.SqlClient.SqlDataAdapter da = new System.Data.SqlClient.SqlDataAdapter (cmd);
    System.Data.DataTable dt = new System.Data.DataTable ();
    da.Fill (dt);
    TableRow r = new TableRow ();
    TableCell k = new TableCell ();
    TableCell v = new TableCell ();
    k.Text = "SQL";
    string sqlResponseBuilder = "";

    if (dt.Rows.Count > 0) {
      var count = dt.Rows[0].Table.Columns.Count;

      for (int i = 0; i < count; i++) {
        sqlResponseBuilder += "|| " + Convert.ToString (dt.Rows[0][i]);
      }
    }
    v.Text = sqlResponseBuilder;
    r.Cells.AddRange (new TableCell[] { k, v });
    tblThreadIdentity.Rows.Add (r);

  } catch (Exception ex) {
    TableRow r = new TableRow ();
    TableCell k = new TableCell ();
    TableCell v = new TableCell ();
    k.Text = "SQL";
    v.Text = ex.Message;
    r.Cells.AddRange (new TableCell[] { k, v });
    tblThreadIdentity.Rows.Add (r);
  }

  //set the thread identity in the corresponding lable
  dumpObject (System.Threading.Thread.CurrentPrincipal.Identity, tblThreadIdentity);

  int loop1, loop2;
  NameValueCollection coll;

  // Load ServerVariable collection into NameValueCollection object.
  coll = Request.ServerVariables;
  // Get names of all keys into a string array. 
  String[] arr1 = coll.AllKeys;
  for (loop1 = 0; loop1 < arr1.Length; loop1++) {
    TableRow r = new TableRow ();
    TableCell k = new TableCell ();
    TableCell v = new TableCell ();
    k.Text = arr1[loop1];
    String[] arr2 = coll.GetValues (arr1[loop1]);

    for (loop2 = 0; loop2 < arr2.Length; loop2++) {
      v.Text = v.Text + Server.HtmlEncode (arr2[loop2]);
    }

    v.Text = Server.HtmlEncode (arr2[0]);
    r.Cells.AddRange (new TableCell[] { k, v });
    tblSrvVar.Rows.Add (r);
  }

  /*
	IEnumerator en = Request.ServerVariables.Keys.GetEnumerator();
	en.MoveNext(); 

	foreach (string key in Request.ServerVariables.Keys) 
	{ 
		TableRow r = new TableRow();
	        TableCell k = new TableCell();
                TableCell v = new TableCell();
		k.Text = key;
		v.Text=Request.ServerVariables[key];
		r.Cells.AddRange(new TableCell[] { k, v });
		tblSrvVar.Rows.Add(r);
	}*/

}

</script>

<html>
<body>
<font face="Verdana">
<center><H2>WHO Page</H2><br>
<table border=1>
<tr>
<td><img src="img1.gif"></td>
</tr>
</table>
</center>
<table border=1>
<tr><td>Authentication Method </td><td><b><asp:label id=AuthMethod runat=server/></b></td><td>Request.ServerVariables("AUTH_TYPE")</td></tr>
<tr><td>Identity </td><td><b><asp:label id=AuthUser runat=server /></b></td><td>Request.ServerVariables("AUTH_USER") or System.Threading.Thread.CurrentPrincipal.Identity</td></tr>
<tr><td>Windows identity </td><td> <b><asp:label id=ThreadId runat=server /></b></td><td>System.Security.Principal.WindowsIdentity.Getcurrent</td></tr>
</table>

<fieldset>
            <label>Identity (System.Threading.Thread.CurrentPrincipal.Identity)</label>
            <asp:Table ID="tblThreadIdentity" runat="server"></asp:Table>
        </fieldset>


	<fieldset>
            <label>Windows Identity (System.Security.Principal.WindowsIdentity.GetCurrent)</label>
            <asp:Table ID="tblProcessIdentity" runat="server"></asp:Table>
        </fieldset>

Dump of server variables :
<br><br>
<asp:Table ID="tblSrvVar" runat="server"></asp:Table>

<form name="form1" method="POST" action="default.aspx">
Sample Form<br>
<input NAME="sometext" TYPE="Text" SIZE="24">
<input TYPE="submit" VALUE="Submit" NAME="SubmitForm" > 
</form>

</font>
</body>
</html>