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OAuth/OpenID Single Sign On (SSO) into Bitbucket using Google Apps

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Bitbucket OAuth/OpenID app gives the ability to enable OAuth/OpenID Single Sign-On for Bitbucket. Bitbucket is compatible with all OAuth/OpenID Providers. Here we will go through a guide to configure SSO between Bitbucket and OAuth/OpenID Provider. By the end of this guide, users from your OAuth/OpenID Provider should be able to log in and register to Bitbucket.

Pre-requisites

To integrate your OAuth/OpenID Provider with Bitbucket, you need the following items:

  • Bitbucket should be installed and configured.
  • Admin credentials are set up in Bitbucket.
  • Valid Bitbucket Server and Data center License.

Download And Installation

  • Log into your Bitbucket instance as an admin.
  • Navigate to the settings menu and Click Manage Apps.
  • Click Find new apps or Find new add-ons from the left-hand side of the page.
  • Locate Bitbucket OAuth/OpenID Connect Single Sign On (SSO), Bitbucket SSO via search.
  • Click Try free to begin a new trial or Buy now to purchase a license for OAuth/OpenID Connect(OIDC) Bitbucket SSO.
  • Enter your information and click Generate license when redirected to MyAtlassian.
  • Click Apply license.
    • OAuth / OpenID Single Sign On (SSO) into Bitbucket Service Provider, Manage Apps menu

Step 1: Setup Google app as OAuth Provider

  • Login to Google Console: Visit the Google's Developer Console and login to your account.
  • Click Select a project, then NEW PROJECT, and enter a name for the project, and optionally, edit the provided project ID. Then click on Create button.
    • OAuth/OpenID/OIDC Single Sign On (SSO), Google Apps SSO Login Setup Google app OAuth/OpenID/OIDC Single Sign On (SSO), Google Apps SSO Login NEW PROJECT
  • Select your project, click on APIs & Services and select OAuth consent screen option.
    • OAuth/OpenID/OIDC Single Sign On (SSO), Google Apps SSO Login OAuth Consent Screen
  • On the Consent screen page, select the User Type and click on Create. In the next screen, provide Application name and save the changes.
  • Now go to Credentials, click on Create Credentials and select OAuth Client ID.
    • OAuth/OpenID/OIDC Single Sign On (SSO), Google Apps SSO Login Create credentials
  • Select Web Application as application type.
    • OAuth/OpenID/OIDC Single Sign On (SSO), Google Apps SSO Login Application type
  • Click on the Add URI button in Authorized redirect URIs section. Collect the callback URL provided in the miniOrange plugin and enter it here. Click on Create.
    The callback URL would be {oauth_client_base_url}/plugins/servlet/oauth/callback
    • OAuth/OpenID/OIDC Single Sign On (SSO), Google Apps SSO Login Redirect URI
  • Get Client ID and Client Secret: Copy the client ID and client secret to your clipboard, as you will need them when you configure miniOrange plugin.
    • OAuth/OpenID/OIDC Single Sign On (SSO), Google Apps SSO Login Get Client ID
  • To send user's group to the client application, you need to enable Admin SDK and API access. For Admin SDK, navigate to the Dashboard and click on ENABLE APIS AND SERVICES.
    • OAuth/OpenID/OIDC Single Sign On (SSO), Google Apps SSO Login Enable APIS and Services
  • Now search for Admin SDK, select it from the list and then click on ENABLE button.
    • OAuth/OpenID/OIDC Single Sign On (SSO), Google Apps SSO Login Admin SDK
  • To enable API Access you need to login into Google Admin console. In Google Admin Console, go to Security ->Settings.
    • OAuth/OpenID/OIDC Single Sign On (SSO), Google Apps SSO Login Security ->Settings
  • Look for API Permissions -> Enable API access
    • OAuth/OpenID/OIDC Single Sign On (SSO), Google Apps SSO Login API reference

Step 2: Setup Bitbucket as OAuth Client

  • Enter Client Id, Client Secret and scope as email. And if you also want to fetch group info of the users then enter email https://www.googleapis.com/auth/admin.directory.group.readonly in the scope field.
    • OAuth/OpenID Single Sign On (SSO) into Bitbucket Service Provider, Using Google Configure OAuth tab
  • Verify the Google Administrator Account : Click on Verify Admin Credentials. For fetching the user groups from Google, you need to verify your Google Administrator's Account by clicking on 'Verify Credentials'.

    • NOTE: You need to login with your Google Administrator's account in this step. If you login with an user account, groups will not be fetched from Google.


  • If you are unable to fetch Groups then Go to Permissions and click on REMOVE ACCESS
    • OAuth/OpenID Single Sign On (SSO) using Google Apps Identity Provider, Remove access


Step 3: User Profile

    We will be setting up user profile attributes for Bitbucket. If your users are stored in a directory that is Read Only, please check Disable Attribute Mapping in User Profile tab and follow steps given in Matching a User.

    OAuth / OpenID Single Sign On (SSO) into Bitbucket Service Provider, Configure user profile attribute

    a. Finding correct attributes
  • Go to Configure OAuth tab. Scroll down and click on Test Configuration.
  • You will see all the values returned by your Provider to Bitbucket in a table. If you don't see value for First Name, Last Name, Email or Username, make the required settings in your Provider to return this information.
  • Once you see all the values in Test Configuration, keep the window open and go to User Profile tab.

    • b. Setting profile attributes
  • In this tab, fill the values by matching the name of the attribute. For instance, if the Attribute Name in the Test Configuration window is email, enter email against Username.
    •
  • You can configure Email and Username here, otherwise it will create a new user with email address returned in Test Configuration window. If you want existing users to the only login, configure the attribute using which you will match the user in Bitbucket.

    • c. Matching a User
    When the user logs into Bitbucket, one of the user's data/attribute coming in from the Provider is used to search the user in Bitbucket. This is used to detect the user in Bitbucket and log in the user to the same account.
  • Go to User Profile tab.
  • Select Username or Email for Login/Search Bitbucket user account by.
  • Enter the attribute name from Provider which corresponds to Username or Email using Finding Correct Attributes.

Step 4: User Groups

    We will be setting up user group attributes for Bitbucket. If your users are stored in a directory that is Read Only, please check Disable Group Mapping in User Groups tab and skip to Setting default group.

    a. Setting default group
  • Select the users' Default Group in the tab User Groups. If no group is mapped, users are added by default to this group.
  • You can enable default groups for All Users or New Users using the option.Select None if you don't want to assign any default group to SSO users. Using the option Enable Default Groups for.
    • OAuth / OpenID Single Sign On (SSO) into Bitbucket Service Provider, Default group configuration
    b. Finding Group Attribute
  • Just like we found Attribute Name for User Profile attributes, we find group attribute.
  • Go to Configure OAuth tab. Scroll down and click on Test Configuration.
  • You will see all the values returned by your OAuth/OpenID Provider to Bitbucket in a table. If you don't see value with groups, make the required settings in your OAuth/OpenID Providerto return group names.
  • Once you see all the values in Test Configuration, keep the window open and go to User Groups tab.
  • Enter the Attribute Name of group against Group Attribute.
  • Check Disable Group Mapping option if you don't want to update groups of existing users.

    • c. Group Mapping
    Group Mapping can be done in two ways:
  • Manual group mapping: If the names of groups in Bitbucket are different than the corresponding groups in OAuth/OpenID Provider, then you should use Manual group mapping.
  • On-The-Fly group mapping: If the names of groups in Bitbucket and OAuth/OpenID Provider are same, you should use On-The-Fly group mapping.

  • I. Manual Group Mapping
    • Check Restrict User Creation Based on Group Mapping option if you want new users to be created only if at least one of the user's OAuth/OpenID Provider groups is mapped to a group in the application.
    • For mapping, first select a Bitbucket group from the dropdown which lists all groups present in Bitbucket and then enter the name of the OAuth/OpenID Provider group to be mapped in the textbox beside
    • For example, if you want all users in 'dev' group in OAuth/OpenID Provider to be added to stash-users, you will need to select stash-users from the dropdown and enter 'dev' against stash-users.
    • Use '+1' and '+10' buttons to add extra mapping fields.
    • Use '-' button next to each mapping to delete that mapping.
    OAuth / OpenID Single Sign On (SSO) into Bitbucket Service Provider, Manual group mapping
  • II. On-The Fly Group Mapping
    • Check Create New Groups option if you want new groups from OAuth/OpenID Provider to be created if not found in Bitbucket.
    • If the user is part of some group in Bitbucket and that group is not present in the OAuth/OpenID response returned by OAuth/OpenID Provider, then the user will be removed from that group in Bitbucket.
    • If you don't want On-The-Fly group mapping to affect Bitbucket groups which are managed locally then add those groups in Exclude Groups field.
    OAuth / OpenID Single Sign On (SSO) into Bitbucket Service Provider, On the fly group mapping

Step 5: Sign In Settings

    The settings in Sign In Settings tab define the user experience for Single Sign On.
    a. Sign In Settings
  • Set Enable SSO for Bitbucket Server to allow SSO for Bitbucket users.
  • Change the text on the SSO button on the login page using the Login Button Text option.
  • Set the Relay State to the URL to which the users would be redirected after login. Keep this empty to redirect users to the same page they started with.
  • Enable Auto-redirect to OAuth/OpenID Provider if you want to allow users to login only using OAuth/OpenID Provider. Enable backdoor for emergency.
  • Restrict the access of backdoor URL to limited users by using the Restrict backdoor URL access based on user groups feature.
  • Use Domain Restriction to allow login to only a specific set of users. You can configure multiple domains (semicolon-separated).
  • For example, if only 'miniorange.com' and 'gmail.com' domains are allowed then, the user test@miniorange.com and test@gmail.com will be able to log in and user test@yahoo.com will not be able to login.
    • OAuth / OpenID Single Sign On (SSO) into Bitbucket Service Provider, Sign in settings
    b. Sign Out Settings
  • Set Logout URL or Logout Template to redirect users after logout action.
    • OAuth / OpenID Single Sign On (SSO) into BitbucketS, Sign out settings and custom logout template

    c. SSO Error Settings
  • Set error template to redirect users to a custom error page instead of login page. Use this if you have Auto-redirect to Provider enabled.
    • OAuth / OpenID Single Sign On (SSO) into Bitbucket Service Provider, Custom error template settings

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