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REST API Authentication In Atlassian using Azure AD as OAuth Provider

REST API Authentication On Atlassian using Azure AD as OAuth Provider

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Using this app, you can authenticate the Application APIs using any third party OAuth/OIDC provider or API Tokens. The app supports Azure AD, Keycloak, Okta, AWS Cognito, Google, Github, Slack, Gitlab, Facebook and any custom provider.

Atlassian provides REST APIs to perform a number of operations such as Create Page, Delete Page, Add Comment, Create Space, etc. However, it supports only two authentication methods for REST APIs:
  1. Basic Authentication
  2. Using OAuth 1.0
The REST API Authentication plugin allows you to use any third party OAuth 2.0 provider/ OpenID connect to authenticate REST APIs. Here we will go through a guide to configure Azure AD as Provider.

Download And Installation

  • Log into your atlassian instance as 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 API Token/OAuth Authentication app.
  • Click Try free to begin a new trial or Buy now to purchase a license.
  • Enter your information and click Generate license when redirected to MyAtlassian.
  • Click Apply license.

Step 1: Configure Azure AD server:

  • Sign in to Azure portal. Click on App Services and go to Manage Azure Active Directory.
    • AzureAD as OAuth Provider
  • In the left-hand navigation pane, click the App registrations service, and click New registration.
    • App-Registration
  • When the Create page appears, enter your application's registration information. Enter the Your Application's Base URL as callback URL. When finished, click Register.
    • registration
  • Azure AD assigns a unique Application ID to your application. Copy Application ID and the Directory ID , this will be your Client ID and Tenent ID.
    • AzureAD as OAuth Provider
  • Go to Certificates and Secrets from the left navigaton pane and click on New Client Secret. Enter description and expiration time and click on ADD option.
    • Secret-key
  • Copy value. This will be your Secret key.
    • Secret-key-2

Step 2: Fetch Access token through POSTMAN:

  • Open the Postman Application (Here is the link to download Postman Application).
  • Go to Authorization tab.
  • From the dropdown select type as OAuth 2.0 and  click on Get access token.
  • Add the following information from the table below.
  • Postman starts the authentication flow and prompts you to use the access token.
  • Select Add token to the header.
Field Value
Grant type Authorization Code or Client Credentials
Callback URL Enter your application's base URL if you dont have a callback URL
Auth URL https://login.microsoftonline.com/{TenantID}/oauth2/v2.0/authorize
Access token URL https://login.microsoftonline.com/{TenantID}/oauth2/token"
Client ID Enter the Azure AD Client ID
Client secret Enter the Azure AD Client secret
Scope User.Read
Client Authentication Send as Basic Auth Header
Azure_accessToken
  • Copy the Access Token or click on Use Token.
A sample access token from Azure AD Provider looks like this. 
e8ec210628306b1df26ff61e6b9b3195814a2d79d38a2c7c1dc5836f6ddd7143

Step 3: Fetch Username through Azure AD:

  • Choose the method type as "GET".
  • Enter the interoception Endpoint from the plugin to fetch the username in the Request URL. For Azure AD it is "https://graph.microsoft.com/v1.0/me".
  • Go to the Authorization tab select the Bearer Token and enter the access token here.
  • Add the header "content-type: application/json" and click on Send.
Azure_user.png
Request: 
     curl
                         -X GET
                         -H "Authorization: Bearer <Access Token>"
                         -H "Content-type: application/json"
                         https://graph.microsoft.com/v1.0/me
Copy the attribute value against the username, you will need to configure it in plugin. In this example, the value is "givenName".

Step 4: Configure the Rest API plugin:

Step 1: Enable Rest API Authentication:
  • After installing the app, click on Configure to configure plugin.
  • Select the Authentication type and navigate to Oauth/OIDC tab, then click on Configure.
  • From the drop down select Azure AD as OAuth Provider.
  • Enter the attribute value against which we received the username in the Postman response.
  • Save the settings.
  • Now navigate to the Global Settings tab.
  • Here you will have to Enable the Authentication through Enable REST API Authentication and click on Save.

Rest API OAuth, API token, API Key authentication for Jira and Confluence Azure AD

Step 2: Disable Basic Authentication:
  • Disabling this will restrict all the REST API call made using Basic Authentication.

Step 5: User Restriction:

Step 1: Group Based Restriction:
  • Navigate to User Restriction Tab and then Group Based Restriction.
  • Check the Restrict Access to API.
  • Enter the Group to allow user to access Rest API.
  • Save the settings.
Step 2: IP Restriction:
  • Navigate to User Restriction Tab and then IP Restriction.
  • Check the Restrict Access to API by IP address.
  • Add IP Address or range to allow Rest API.
  • Save the settings.

Step 6: Test REST API using access token:

Jira Rest API

  • Call any REST API. Include the access token in the Authorization header. Here’s an example of fetching content from Jira.
  • Go to the Postman application select method type as GET and enter the Request URL. For eg. http://{Jira_Base_URL}/rest/api/2/project
  • In the Authorization tab select type as Bearer Token.
Rest API OAuth, API token, API Key authentication for Jira and Confluence Confluence-Rest-API-AzureAD B2C  
  • In the Header tab add the header “content-type: application/json and send the request.
Rest API OAuth, API token, API Key authentication for Jira and Confluence Confluence-Rest-API-AzureAD B2C
Request: 
     curl 
     -X GET  
     -H "Authorization: Bearer <Access Token>" 
     -H "Content-type: application/json" 
     http://{jira_base_url}/rest/api/2/project
  • This will return all projects which are visible for the current userstatus 200.
  • If the token is invalid or missing, the call will return a 401 Unauthorized response

Confluence Rest API

  • Call any REST API. Include the access token in the Authorization header. Here’s an example of fetching content from Confluence.
  • Go to the Postman application select method type as GET and enter the Request URL. For eg. http://{Confluence_Base_URL}/confluence/rest/api/content/
  • In the Authorization tab select type as Bearer Token.
Token  
  • In the Header tab add the header “content-type: application/json and send the request.
Result
Request: 
     curl
                             -X GET
                             -H "Authorization: Bearer <Access Token>"
                             -H "Content-type: application/json"
                             http://{confluence_base_url}/confluence/rest/api/content/
  • This will show the content in Confluence and will return the status 200.
  • If the token is invalid or missing, the call will return a 401 Unauthorized response

Bitbucket Rest API

  • Call any REST API. Include the access token in the Authorization header. Here’s an example of fetching content from Bitbucket.
  • Go to the Postman application select method type as GET and enter the Request URL. For eg. http://{Bitbucket_Base_URL}/rest/api/1.0/dashboard/pull-requests
  • In the Authorization tab select type as Bearer Token.
Rest API OAuth, API token, API Key authentication for Jira and Confluence Confluence-Rest-API-AzureAD B2C  
  • In the Header tab add the header “content-type: application/json and send the request.
Rest API OAuth, API token, API Key authentication for Jira and Confluence Confluence-Rest-API-AzureAD B2C
Request: 
     curl 
     -X GET  
     -H "Authorization: Bearer <Access Token>" 
     -H "Content-type: application/json" 
     http://{bitbucket_base_url}/rest/api/1.0/dashboard/pull-requests/
  • This will Retrieve a page of pull requests where the current authenticated user status 200.
  • If the token is invalid or missing, the call will return a 401 Unauthorized response


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