How to Find the Domain Name on a Computer Using Javascript

 Javascript  2 Responses »
Apr 302011
 

Hi all,

Just a follow up post to the last post regarding modifying users in AD via Javascript.
You need a Domain Name in the following code snippet –


objUserDN.Init(1,"DOMAIN NAME HERE");
objUserDN.Set(3,"DOMAIN NAME HERE\\"+strUsername);

Now what if you wanted to use the script for multiple domains without having to modify the code to change the domain name ?
You can use ActiveX with a Windows Script Host function to get the domain name as well !
To get it, you can simply use the following code snippet :


wshell=new ActiveXObject("wscript.network");
var strDomain = wshell.userdomain;

With that code, strDomain will now contain the NetBIOS Domain name which is used here.

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Modifying a User in Active Directory Using Javascript

 Active Directory, Javascript  2 Responses »
Apr 242011
 

Hi All,

I’ve been making a few scripts lately to modify a user using Javascript rather than VB.
I prefer working with Javascript as it suits my purpose a bit better as I can use variable size arrays to make it do what I want.

I start off with the Distinguished Name (DN) of the object, which can be obtained with :

function GetDN(strUsername) {
var rootdse = GetObject("LDAP://RootDSE");
var objUserDN = new ActiveXObject("NameTranslate");

objUserDN.Init(1,"DOMAIN NAME HERE");
objUserDN.Set(3,"DOMAIN NAME HERE\\"+strUsername);
strUserDN = objUserDN.get(1)
return strUserDN;
}

That code will get the DN of the user in question. Whether you integrate it into the script itself or use a function that is seperate from the main script is up to you.
I have used a function in this case.

*Update*
I have posted a way to obtain the Domain Name for this script here.

After you have obtained the DN of the user, you will now need to create an object for the user so we can manipulate the user’s details.

var objUser = GetObject("LDAP://"+strUserDN);

We can now access the properties of the user via the objUser object.
To see what the properties contain already, you can use this :

var strUserDesc = objUser.description;

To modify any properties, the put method is used :

objUser.Put("description","This is the new description");
objUser.Put("profile","This is the new profile path");
objUser.SetInfo();

The SetInfo method is used to commit changes into AD.
Hopefully no errors will come up when you try to commit the changes, and you have successfully modified a user using Javascript !.

All the properties can be found on the MSDN (reference 4).

Reference :
1. IADsNameTranslate Interface
2. ADS_NAME_INITTYPE_ENUM Enumeration
3. ADS_NAME_TYPE_ENUM Enumeration
4. IADsUser Interface

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Query a User in Active Directory

 Active Directory, Javascript  2 Responses »
Jan 042011
 

Quick snippet on how to query an AD user with Javascript.

Firstly, get the user object with:

var objUser = GetObject("LDAP://cn=username,ou=users,dc=example,dc=com");

With this object, you can query any attributes of the user.


var disabled = objUser.AccountDisabled; // True when the account is disabled
var firstname = objUser.givenname; // Returns the users first name.

A List of attributes can be found here.

Some of the more difficult attributes to query are “memberof” which displays the group memberships, and “lockouttime” which is how long they have been locked out for.

When querying memberof, it will return a VB Array, which Javascript won’t recognise unless you retrieve it with:

var memberof = VBArray(objUser.GetEx("memberof")).toArray();

With lockouttime the number is a 64-bit number, which requires a Highpart and Lowpart to access the whole number.
This code will get the lock out time:

var lockouttime = objUser.lockouttime;
var locktimems = Math.abs(lockouttime.HighPart) * Math.pow(2,32) + Math.abs(lockouttime.LowPart); //locktimems now has the time that the account is locked out until in milliseconds.

More garbage from me later !

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Javascript Ping

 Javascript  No Responses »
Dec 282010
 

I have found being able to ping from a webpage useful on occasion so I thought I would post up a few snippets that I used to ping computers.


var oLoc = new ActiveXObject('WbemScripting.SWbemLocator');
var oSrv = oLoc.ConnectServer(null,'/root/cimv2');
var PingServer = new Enumerator(oSrv.ExecQuery('SELECT * FROM Win32_PingStatus WHERE Address = "' + Computer + '" AND Timeout = 5000'));
PingServer.moveFirst();
var respcode = PingServer.item().StatusCode;
if(respcode == 0) {
alert("Reply from "+Computer)
} else {
alert("Error pinging "+Computer+"\nError Code : "+respcode);
}

That’s pretty much a cut down version of what I use, it’s missing all the HTML obviously but that’s the core of it.
The “Computer” variable is the address or hostname that you want to ping, and “Timeout” is the maximum time before the ping times out in milliseconds.

Now a quick explanation :
First couple of lines creates the ActiveX Object and starts a connection using WMI
Third line creates the Enumerator object that contains the results from the query that returns the ping results.
Fourth and Fifth lines get to the results and returns the Status Code respectively.
From there, a response of 0 means the ping was good, otherwise anything else means it was bad.
This link has the list of status codes and their meanings.

I have used this at work to see if computers are online quickly as I have this and a few other useful scripts running in a little window off to the side.

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