MS Office 365 Custom OAuth Setup

Apart from the OAuth methods that Rocket.Chat provides for user authentication, you can also choose to set up a custom OAuth method.

This guide shows how you can set up a custom OAuth integration between Microsoft accounts and Rocket.Chat. This is achieved with the use of Microsoft Entra ID (formerly called Azure Active Directory) which is an identity service by Microsoft that provides single sign-on and other authentication methods. You can also define conditional access policies and role-based permissions.

Prerequisites

• An account on the Azure portal.

• An Azure Active Directory app.

• An application ID and client secret.

  • If you don't have an app, log in to the Azure Portal and navigate to the Microsoft Entra ID tab.

  • Create a new App Registration.

  • Fill in the details. You will get the redirect URI from your Rocker.Chat workspace when youCreate Custom O365 OAuth.

  • After registering your new app, take note of Application (client) ID. It will be needed to configure the integration later.

  • On your new app's page, go to the Certificates and Secret tab to create a New client secret.

Create Custom O365 OAuth

To create a custom authentication method in your Rocket.Chat workspace:

• Navigate to Administration > Workspace > Settings > OAuth.

• Click on Custom OAuth and set the new OAuth integration name.

• After creating the new integration, you are given the Callback URL. For example, https://<your-domain>/_oauth/365OAuth. Provide this as the redirect URI when you are creating your Azure app.

• You will also need to fill in other configuration fields.

Configure Custom O365 OAuth

In your workspace, set the following fields as per your requirements.

OAuth server configuration fields:

• Enable: Set to true to enable this OAuth integration

• URL: https://login.microsoftonline.com/<tenant ID>

• Token Path: /oauth2/token

• Token Sent Via: Select whether you want to send the token via Payload or Header.

• Identity Token Sent Via: Select whether you want to send the identify token via Payload, Header, or keep it Same as "Token Sent Via" field value.

• Identity Path: /openid/userinfo

• Authorize Path: /oauth2/authorize

• Scope: openid

• Param Name for access token: access_token

• Id: <Your Azure AD Application (client) ID>

• Secret: <Your Azure AD client secret>

• Login style: Select the login style as Popup, Redirect, or Default.

• Button Text: Enter some text to display on the button. For example, Login via Microsoft.

• Merge Users: True

• Merge Users From Distinct Services: True

• Click Save changes.

After saving, you will find the O365 Oauth button on the login and signup page.

Simply sign in to your Office account to authenticate!