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oxd OpenCart OpenID Connect Single Sign-On (SSO) Extension by Gluu#


The oxd OpenID Connect single sign-on (SSO) plugin for OpenCart enables you to use a standard OpenID Connect Provider (OP), like Google or the Gluu Server, to authenticate and enroll users for a OpenCart site.

OpenCart Demo Video#

You can watch a video demo of the OpenCart plugin installation and configuration here. In the video we use a Gluu Server as the OP.


In order to use the OpenCart module you will need to have a OpenCart site, standard OP (like Google or a Gluu Server) and an active oxd server. Some additional notes:.

  • This plugin is compatible with OpenCart Versions : -

  • If you want to stand up your own OP server, you can deploy the free open source Gluu Server. Otherwise we recommend using Google

  • You will need a valid license to start the oxd server. You can get a license and a $50 credit by signing up on the oxd website

Plugin Installation#

Download OpenCart Plugin#

You can either download the plugin from the Github source or from OpenCart marketplace

Upload the Plugin#

  1. Unzip the downloaded plugin file in your OpenCart site root directory

  2. Log in to OpenCart Admin console

  3. Navigate to Extensions > Modules on the list find OpenID Connect Single Sign-On (SSO) Extension by Gluu

  4. Click on Install button, and wait for the process to complete and to display success message on the top of the page.



Plugin Configuration#

In your OpenCart admin Console, you should now see the OpenID Connect Single Sign-On (SSO) Extension by Gluu under Extensions > Modules. Click on Edit button to complete the General configuration.


Server Settings#

In the server settings section of the plugin configuration page you will need to enter information about your OP, your oxd server, and where you want to redirect users after logout.

A short description of each field follows:

  1. URI of the OpenID Provider: Insert the URI of the OpenID Connect Provider here. If you are using Google as your OP, this will simply be If you are using another OP it will be something like

  2. Custom URI after logout: Provide a URL for a landing page to redirect users after logout of the OpenCart site, for instance If you don't have a preferred logout page we recommend simply entering your website homepage URL. If you leave this field blank the user will see the default logout page presented by OpenCart

  3. oxd port: Enter the oxd-server port, which you can find in your oxd-server/conf/oxd-conf.json file

  4. Click Register to continue

If your OpenID Provider supports dynamic registration no additional steps are required.

If your OpenID Connect Provider does not support dynamic registration (like Google), after clicking register two additional fields will be exposed where you need to enter your client_id and client_secret. Both values need to be obtained from the OP. To generate your client_id and client_secret use the redirect URI: https://{site-base-url}/index.php?option=oxdOpenId.


If you are using a Gluu server as your OpenID Provider, you can make sure everything is configured properly by logging into to your Gluu Server, navigate to the OpenID Connect > Clients page. Search for your oxd id. If it's present in the OP, everything worked.

Enrollment and Access Management#

In the enrollment and access management section of the plugin configuration page you can decide, (1), how new user registrations will be handled, and, (2), what role new users will receive upon registration.

  • You have three options for new user registrations:

  • Automatically register any user with an account in the OpenID Provider: By setting registration to automatic, any user with an account in the OP will be able to dynamically register for an account on your OpenCart site;

  • Only register and allow ongoing access to users with one or more of the following roles in the OP: Using this option you can limit registration to users that have a specified role in the OP, for instance OpenCart. Each time the user authenticates they will need to have this scope present in order to be approved for access (i.e. if you remove this scope from the users profile in the OP, the user would be denied access). This is not configurable in all OP's. It is configurable if you are using a Gluu Server. Follow the instructions below to limit access based on an OP role

  • Disable automatic registration: If you choose to disable automatic registration, you will need to manually add a user in OpenCart for each person that needs access. Make sure that when you add the user in OpenCart, you use the same email they have registered in the OP

  • New User Default Role: Use this field to specify which role new users are assigned upon registration. If you have automatic registration set to disabled, you will have the opportunity to specify the users role during manual account creation

Role Based Enrollment#

In order to implement role based enrollment, you will need to make changes in both the plugin and the Gluu Server.

Perform the following in the Plugin:

  1. In the Enrollment and Access Management section, choose the option: Only register and allow ongoing...
  2. Add a name for the role want to use to enforce access (e.g. OpenCart or website)
  3. Save the configuration
  4. Navigate to the OpenID Connect Configuration tab
  5. In the User Scopes section, check the box for permission
  6. Save your settings

Perform the following in your Gluu Server:

  1. Navigate to your Gluu Server admin GUI ("oxTrust")
  2. Click the Users tab in the left hand navigation menu
  3. Select Manage People
  4. Find the person(s) who should have access
  5. Click their user entry
  6. Add the User Permission attribute to the person and specify the same value as in the plugin. For instance, if in the plugin you specify that enrollment should be limited to users with role = OpenCart, then you should also have User Permission = OpenCart in the user entry. See a screenshot example
  7. Update the user record

Now only users with the role OpenCart in the Gluu Server will be able to gain access to your OpenCart site.

OpenID Connect Configuration#

Navigate to the OpenID Connect Configuration tab to set your preferences for scopes and authentication.

User Scopes#

Scopes are groups of user attributes that are sent from the OP to the application during login and enrollment. By default, the requested scopes are profile, email, and openid. If you want more information about the users, you can request additional scopes.

To view your OP's available scopes, open a web browser and navigate to https://<hostname>/.well-known/openid-configuration. For example, if you are using Google the the OP, you can see the available scopes in the Google's OP configuration.

If you are using a Gluu server as your OpenID Provider, you can view available scopes by navigating to the OpenID Configuration page as described above, or within oxTrust by navigating to OpenID Connect > Scopes.


In the authentication settings, you have two options:

  • Bypass the local OpenCart login page and send users straight to the OP for authentication: If you would like to bypass OpenCart's default login page and send users straight to the OP, check this box (recommended). When this option is left unchecked users will see the following screen when trying to login:


  • Select ACR: acr is an OpenID Connect specific value that enables applications to request a specific type of authentication from the OP, e.g. SMS based two factor authentication, or FIDO U2F tokens. If you are using Google as your OP, you will have to accept their default authentication mechanism. If you are using a Gluu Sever, you will be able to request any supported form of authentication. To view the OP's supported ACR values, navigate to your OpenID Provider configuration page, https://<hostname>/.well-known/openid-configuration and find acr_values. In the Select acr field you can choose your preferred authentication mechanism. If Select acr is none, users will be sent to pass the OP's default authentication mechanism

OP Configuration#

Gluu Server Configuration#

If you are using a Gluu Server as your OP, you will need to configure Gluu to release the email claim. You can do so by following the below steps:

  1. Log into your Gluu Server dashboard ("oxTrust") and navigate to OpenID Connect > Scopes

  2. Find the email scope and click on it

  3. Set the default scope field to True

  4. If Email is not already added to the Claims field, click the Add Claim, search for email, and add it



  1. Now navigate to Configuration > Attributes and make sure that the Email attribute is set to Active. If it is not, click on the email attribute and scroll down to the Status field where you can change the value to Active. Click update


Google Configuration#

To use Google as the OP, you will need to obtain a Client ID and Secret at Google. To generate your client_id and client_secret at Google use the redirect uri: https://<hostname>/index.php?option=oxdOpenId.


Please report technical issues and suspected bugs on our support page. If you do not already have an account on Gluu Support, you can login and create an account using the same credentials you created when you registered for your oxd license.