SSO Login into Drupal using Azure AD as an OAuth / OpenID Connect Provider

Drupal Azure AD SSO integration will allow the users to log in to the Drupal site using the Azure AD Credentials. This SSO integration is achieved by the miniOrange OAuth Client module which uses the OAuth 2.0 and OpenID Connect (OIDC) Protocol.

In this document, we will help you configure the Single Sign-On login using the OAuth protocol between the Drupal site and the Azure AD.

Setup Drupal as OAuth Client:

• After installing the module, navigate to the Configuration -> miniOrange OAuth Client Configuration -> Configure OAuth tab and select Azure AD from the Select Application dropdown list.
• Copy the Callback/Redirect URL and keep it handy.

  Note: If you have an HTTP Drupal site, and Azure enforces the HTTPS Redirect URI. Please navigate to the Sign In Settings tab of the module and set the base URL of the site with HTTPS in the Base URL text field.

• Enter the application name in the Display Name text field. For example, Azure

Create SSO Application in Azure AD:

• Log in to the Microsoft Azure portal.
• Select Azure Active Directory from the Azure services section.

• To create a new Azure AD application, navigate to App registrations in the left-hand navigation panel and click on the New registration button.

• In the Register an application window, enter the following information:
• Name: Enter the Application name.
• Supported account types: Select the 1st option, Accounts in this organizational directory only (Test only - Single tenant). You can refer the Help me choose link.
• Redirect URI (optional): Select Web from the Select a platform dropdown list. Then, in the text field, paste the previously copied Callback/Redirect URL.

• Click on the Register button.

Integrating Drupal with Azure AD

• Azure AD assign a unique Application ID to your application. Copy the Application (client) ID. This is your Client ID.

• Paste the copied Application (client) ID into the Client ID text field in the Drupal's Configure OAuth tab.

• Navigate to the Azure portal and click on the Add a certificate or secret link.

• Click on the New client secret button. In the Add a client secret popup, enter the required information:
• Description: Enter the description for this Secret.
• Expires: Select an expiry duration for this Secret from the dropdown.

• Click on the Add button.
• Copy the Value from the Client secrets tab. This is Client Secret.

• Navigate to the Configure OAuth tab in Drupal and paste the copied Client Secret into the respective text field.

• Go to the Azure AD portal.
• Navigate to the Overview from the left side panel.

• Under Essentials section, copy the Directory (tenant) ID. This will be your Tenant-ID.

• In Drupal's Configure OAuth tab replace the previously copied Directory (tenant) ID with the {tenant-id} in the Authorize Endpoint and Access Token Endpoint text fields, respectively.

• Click on the Save Configuration button.

You can also refer to the Azure AD Endpoints and scope from the table given below:

Scope	openid
Authorize Endpoint:	https://login.microsoftonline.com/{tenant-id}/oauth2/v2.0/authorize
Access Token Endpoint:	https://login.microsoftonline.com/{tenant-id}/oauth2/v2.0/token
Get User Info Endpoint:	https://graph.microsoft.com/oidc/userinfo

Test Connection between Drupal and Azure Active Directory:

• Click on the Perform Test Configuration button to test the connection.

• On a Test Configuration popup, if you don't have an active session in Azure AD on the same browser, you'll be prompted to sign in to Azure AD. Once successfully logged in, you'll receive a list of attributes retrieved from Azure AD.
• Select the Email Attribute from the dropdown menu in which the user's email ID is obtained and click on the Done button.

• Once clicked on Done button, you will be redirected to the Attribute & Role Mapping tab, in which you can select the Username Attribute from the dropdown list and click on Save Configuration button.

Please note: Mapping the Email Attribute is mandatory for Single Sign-On.

How to perform the SSO?

• Open a new browser/private window and navigate to the Drupal site login page.
• Click on the Login using Azure link to initiate the SSO from Drupal.
• If you want to add the SSO link on other pages, please follow the steps given in the image below: