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Set a cookie using nFactor

August 1, 2023

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You can apply the nFactor custom labels and set a cookie as a factor of the authentication flow. Through custom labels, you can use JavaScript to manipulate the login schema.

To set a cookie as a factor, you do not need to display any information to the user, which is performed with a no schema login. Instead, you must interact with the user’s browser to instruct the login schema to store the desired data. A login schema is required to set the cookie when the page is loaded. The cookie is set with a custom label and JavaScript code.

To implement a factor that sets a cookie, create an XML file called cookie.xml to store the schema in the /nsconfig/loginschema/ directory with the following content:

<?xml version="1.0" encoding="UTF-8"?>
<AuthenticateResponse xmlns="http://citrix.com/authentication/response/1">
<Status>success</Status>
<Result>more-info</Result>
<StateContext></StateContext>
<AuthenticationRequirements>
<PostBack>/nf/auth/doAuthentication.do</PostBack>
<CancelPostBack>/nf/auth/doLogoff.do</CancelPostBack>
<CancelButtonText>Cancel</CancelButtonText>
<Requirements>

<Requirement>
<Credential><ID>nsg_cookie</ID><Type>nsg_cookie</Type></Credential>
<Label><Text>Logon Type:</Text><Type>Plain</Type></Label>
</Requirement>

<Requirement>
<Credential><ID>loginBtn</ID><Type>none</Type></Credential>
<Label><Type>none</Type></Label><Input><Button>Log On</Button></Input>
</Requirement>

</Requirements>
</AuthenticationRequirements>
</AuthenticateResponse>
<!--NeedCopy-->

In this XML;

The custom label nsg_cookie is used to create the cookie and submit the form, and the form button.
The RfWebUI_custom is the new Portal theme based on the RfWebUI theme.

Create a portal theme based on the RfWebUI theme.
```
add vpn portaltheme RfWebUI_custom -basetheme RfWebUI

```
This command creates a folder for this theme at /var/netscaler/logon/themes/RfWebUI_custom

Edit the file /var/netscaler/logon/themes/RfWebUI_custom/script.js and add the following script:

CTXS.ExtensionAPI.addCustomCredentialHandler({
    // The name of the credential, must match the type returned by the server
    getCredentialTypeName: function () { return "nsg_cookie"; },
    // Generate HTML for the custom credential
    getCredentialTypeMarkup: function (requirements) {
        var div = $("<div></div>");
        $(document).ready(function() {
        //Set cookie valid for 1000 days
        var exdays = 1000;
        var d = new Date();
        d.setTime(d.getTime() + (exdays*24*60*60*1000));
        var expires = "expires="+ d.toUTCString();
        document.cookie = "NSC_COOKIE_NAME=CookieValue;" + expires + ";path=/";

        //Submit form
        document.getElementById('loginBtn').click();
        });
        return div;
    }
});
<!--NeedCopy-->

This code performs the following:

Waits for the browser to finish loading the page
Sets a cookie called NSC_COOKIE_NAME with the value CookieValue, valid for 1000 days
Auto-submits the form.

The cookie is created and the user does not need to interact with the page.

Create a login schema to bind to the policy label that represents the set cookie factor.

add authentication loginSchema Cookie_LS -authenticationSchema "/nsconfig/loginschema/cookie.xml"
<!--NeedCopy-->

Create a NO_AUTHN authentication policy to bind to the policy label that represents the set cookie factor.
```
add authentication Policy NO_AUTHN_POL -rule TRUE -action NO_AUTHN

```
This policy always evaluates as true, moving the user to the next factor or completing the authentication flow.
Bind the portal theme RfWebUI_custom to the NetScaler Gateway virtual server or NetScaler AAA virtual server.

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Set a cookie using nFactor

August 1, 2023

Contributed by:

August 1, 2023

Contributed by:

Set a cookie using nFactor

Steps to set a cookie using nFactor

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