How can I read the client's machine/computer name from the browser?

How can I read the client's machine/computer name from the browser?
Is it possible using JavaScript and/or ASP.NET?

Answers:

Answer

You can do it with IE 'sometimes' as I have done this for an internal application on an intranet which is IE only. Try the following:

function GetComputerName() {
    try {
        var network = new ActiveXObject('WScript.Network');
        // Show a pop up if it works
        alert(network.computerName);
    }
    catch (e) { }
}

It may or may not require some specific security setting setup in IE as well to allow the browser to access the ActiveX object.

Here is a link to some more info on WScript: More Information

Answer

Browser, Operating System, Screen Colors, Screen Resolution, Flash version, and Java Support should all be detectable from JavaScript (and maybe a few more). However, computer name is not possible.

EDIT: Not possible across all browser at least.

Answer

Well you could get the ip address using asp.net, then do a reverse DNS lookup on the ip to get the hostname.

From the ASP.NET Developer's cookbook ... Performing a Reverse-DNS Lookup.

Answer

It is not possible to get the users computer name with Javascript. You can get all details about the browser and network. But not more than that.

Like some one answered in one of the previous question today.

I already did a favor of visiting your website, May be I will return or refer other friends.. I also told you where I am and what OS, Browser and screen resolution I use Why do you want to know the color of my underwear? ;-)

You cannot do it using asp.net as well.

Answer

Try getting the client computer name in Mozilla Firefox by using the code given below.

netscape.security.PrivilegeManager.enablePrivilege( 'UniversalXPConnect' ); 

var dnsComp = Components.classes["@mozilla.org/network/dns-service;1"]; 
var dnsSvc = dnsComp.getService(Components.interfaces.nsIDNSService);
var compName = dnsSvc.myHostName;

Also, the same piece of code can be put as an extension, and it can called from your web page.

Please find the sample code below.

Extension code:

var myExtension = {
  myListener: function(evt) {

//netscape.security.PrivilegeManager.enablePrivilege( 'UniversalXPConnect' ); 
var dnsComp = Components.classes["@mozilla.org/network/dns-service;1"]; 
var dnsSvc = dnsComp.getService(Components.interfaces.nsIDNSService);
var compName = dnsSvc.myHostName;
content.document.getElementById("compname").value = compName ;    
  }
}
document.addEventListener("MyExtensionEvent", function(e) { myExtension.myListener(e); }, false, true); //this event will raised from the webpage

Webpage Code:

<html>
<body onload = "load()">
<script>
function showcomp()
{
alert("your computer name is " + document.getElementById("compname").value);
}
function load()
{ 
//var element = document.createElement("MyExtensionDataElement");
//element.setAttribute("attribute1", "foobar");
//element.setAttribute("attribute2", "hello world");
//document.documentElement.appendChild(element);
var evt = document.createEvent("Events");
evt.initEvent("MyExtensionEvent", true, false);
//element.dispatchEvent(evt);
document.getElementById("compname").dispatchEvent(evt); //this raises the MyExtensionEvent event , which assigns the client computer name to the hidden variable.
}
</script>
<form name="login_form" id="login_form">
<input type = "text" name = "txtname" id = "txtnamee" tabindex = "1"/>
<input type="hidden" name="compname" value="" id = "compname" />
<input type = "button" onclick = "showcomp()" tabindex = "2"/>

</form>
</body>
</html>
Answer

No this data is not exposed. The only data that is available is what is exposed through the HTTP request which might include their OS and other such information. But certainly not machine name.

Answer

There is no way to do so, as JavaScript does not have an access to computer name, file system and other local info. Security is the main purpose.

Answer

Erm is there any reason why you can't just use the HttpRequest? This would be on the server side but you could pass it to the javascript if you needed to?

Page.Request.UserHostName

HttpRequest.UserHostName

The one problem with this is it would only really work in an Intranet environment otherwise it would just end up picking up the users Router or Proxy address...

Answer

An updated version from Kelsey :

$(function GetInfo() {
    var network = new ActiveXObject('WScript.Network');
        alert('User ID : ' + network.UserName + '\nComputer Name : ' + network.ComputerName + '\nDomain Name : ' + network.UserDomain);
        document.getElementById('<%= currUserID.ClientID %>').value = network.UserName;
        document.getElementById('<%= currMachineName.ClientID %>').value = network.ComputerName;
        document.getElementById('<%= currMachineDOmain.ClientID %>').value = network.UserDomain;
});

To store the value, add these control :

<asp:HiddenField ID="currUserID" runat="server" /> <asp:HiddenField ID="currMachineName" runat="server" /> <asp:HiddenField ID="currMachineDOmain" runat="server" />

Where you also can calling it from behind like this :

Page.ClientScript.RegisterStartupScript(this.GetType(), "MachineInfo", "GetInfo();", true);
Answer
<html>
<body onload = "load()">
<script>
  function load(){ 

     try {
       var ax = new ActiveXObject("WScript.Network");
       alert('User: ' + ax.UserName );
       alert('Computer: ' + ax.ComputerName);
     }
     catch (e) {
       document.write('Permission to access computer name is denied' + '<br />');
     } 
  }
</script>
</body>
</html>

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