Drupal OAuth/OpenID Connect SSO integration enables SSO between the Drupal site and Office 365. This setup guide helps in configuring Single Sign-On (SSO) between the Drupal site and Office 365 using the OAuth/OpenID Connect module. When you incorporate the OAuth/OpenID Connect module with the Drupal site, you can log into the Drupal site seamlessly with Office 365 credentials. This module is compatible with Drupal 7, Drupal 8, Drupal 9, and Drupal 10.

Set up Drupal as OAuth Client:

• After installing the module, navigate to the Configuration -> miniOrange OAuth Client Configuration -> Configure OAuth tab.

• Select Custom OAuth 2.0 Provider from the Select Application dropdown.
• Copy the Callback/Redirect URL and keep it handy.
• Enter Office365 in the Display Name text field.

Create OAuth/OpenID SSO Application in Microsoft Office 365:

• Log in/Sign up for the Microsoft Office 365 Admin console.
• Go to the Azure services section and select Azure Active Directory service.

• Navigate to the App registration -> New registration from the left navigation menu.

• Enter the following information on the Register an Application page:
• Enter the display name for the application in Name text field.
• Supported account types: Select Accounts in this organizational directory only (Test only - Single tenant). If you are unsure which option to select, click on the Help me choose link.
• Redirect URI (optional): Select a Platform as Web. Paste the copied Callback/Redirect URL into the Redirect URI text field.

• Click on the Register button to create the new application.

Integrating Drupal with Office 365:

• Copy the Application (client) ID from the Microsoft Office portal.

• Go to Drupal's Configure OAuth and paste the copied Application ID into the Client ID text field.

• On the Microsoft Office portal, click on Add a certificate or secret under the Essentials section.

• Click on the New client secret button.
• Provide the required information on the Add a client secret window:
• Enter a Description for this client secret
• Select Expires duration from the dropdown.

• Click on the Add button.
• Then, copy the Value from the Client secrets tab. It's your app’s Client Secret key.

• Go to Drupal's Configure OAuth tab and paste the copied Client secrets Value into the Client Secret text field.

• Go to the Microsoft Office 365 portal, navigate to the API permissions -> Add a permission -> Microsoft APIs -> Office 365 Management APIs -> Application permissions.

• Select desired Permissions and click on the Add permissions button.

• Navigate to the Overview and click on Endpoints button.
• Copy the OAuth 2.0 authorization endpoint (v2) & OAuth 2.0 token endpoint (v2).

• Navigate to Drupal’s Configure OAuth tab and paste the authorization endpoint and token endpoint into the respective test fields.

• Click on Save Configuration button.

You can also refer the Office 365 Endpoints and Scope in the table below:

Test connection between Drupal and Office 365:

• After successfully saving the configurations, click on the Perform Test Configuration button to test the connection between Drupal and Office 365.

• On a Test Configuration popup, if you don't have any active session in Office 365 on the same browser, you will be asked to login into the Office 365. Once you are successfully logged into the Office 365, you will be provided with a list of the attributes that are received from the Office 365.
• Select the Email Attribute from the dropdown menu in which the user's email ID is obtained and click on the Done button.

• After clicking on Done button, you will be redirected to the Attribute & Role Mapping tab, in which you can also choose the Username Attribute from the drop-down and click on the Save Configuration button.

Please note: Mapping the Email Attribute is mandatory for Login.

Congratulations! You have successfully configured Office 365 (O365) as an OAuth Provider and Drupal as an OAuth Client.

How to perform the SSO?

• Now, open a new browser/private window and go to your Drupal site login page.
• Click on the Login with Office365 link to initiate the SSO from Drupal.
• If you want to add the SSO link to other pages as well, please follow the steps given in the image below: