README.md

Overview

With Spring Starter for Azure Active Directory, now you can get started quickly to build the authentication workflow for a web application that uses Azure AD and OAuth 2.0 to secure its back end. It also enables developers to create a role based authorization workflow for a Web API secured by Azure AD, with the power of the Spring Security Filter Chain.

Implementation Summary

This package provides 2 ways to integrate with Spring Security and authenticate with Azure Active Directory.

• Authenticate in backend, auto configuration for common Azure Active Directory OAuth2 properties and OAuth2UserService to map authorities are provided.
• Authenticate in frontend, sends bearer authorization code to backend, in backend a Spring Security filter validates the Jwt token from Azure AD and save authentication. The Jwt token is also used to acquire a On-Behalf-Of token for Azure AD Graph API so that authenticated user's membership information is available for authorization of access of API resources. Below is a diagram that shows the layers and typical flow for Single Page Application with Spring Boot web API backend that uses the filter for Authentication and Authorization.

The authorization flow is composed of 3 phrases:

• Login with credentials and validate id_token from Azure AD
• Get On-Behalf-Of token and membership info from Azure AD Graph API
• Evaluate the permission based on membership info to grant or deny access

How to use

Register the Application in Azure AD

• Register a new application: Go to Azure Portal - Azure Active Directory - App registrations - New application registration to register the application in Azure Active Directory. Application ID is client-id in application.properties.
• Grant permissions to the application: After application registration succeeded, go to API ACCESS - Required permissions - DELEGATED PERMISSIONS, tick Access the directory as the signed-in user and Sign in and read user profile. Click Grant Permissions (Note: you will need administrator privilege to grant permission).
• Create a client secret key for the application: Go to API ACCESS - Keys to create a secret key (client-secret).

Add Maven Dependency

azure-active-directory-spring-boot-starter is published on Maven Central Repository. If you are using Maven, add the following dependency.

<dependency>
    <groupId>com.microsoft.azure</groupId>
    <artifactId>azure-active-directory-spring-boot-starter</artifactId>
    <version>2.0.4</version>
</dependency>

Configure application.properties and autowire beans

Refer to different samples for different authentication ways.

Authenticate in backend

Please refer to azure-active-directory-spring-boot-backend-sample for authenticate in backend.

Configure application.properties:

spring.security.oauth2.client.registration.azure.client-id=xxxxxx-your-client-id-xxxxxx
spring.security.oauth2.client.registration.azure.client-secret=xxxxxx-your-client-secret-xxxxxx

azure.activedirectory.tenant-id=xxxxxx-your-tenant-id-xxxxxx
azure.activedirectory.active-directory-groups=group1, group2

Autowire OAuth2UserService bean in WebSecurityConfigurerAdapter:

    @Autowired
    private OAuth2UserService<OidcUserRequest, OidcUser> oidcUserService;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                .authorizeRequests()
                .anyRequest().authenticated()
                .and()
                .oauth2Login()
                .userInfoEndpoint()
                .oidcUserService(oidcUserService);
    }

Authenticate in frontend

Please refer to azure-active-directory-spring-boot-sample for how to integrate Spring Security and Azure AD for authentication and authorization in a Single Page Application (SPA) scenario.

Configure application.properties:

azure.activedirectory.client-id=Application-ID-in-AAD-App-registrations
azure.activedirectory.client-secret=Key-in-AAD-API-ACCESS
azure.activedirectory.active-directory-groups=Aad-groups e.g. group1,group2,group3

If you're using Azure China, please append an extra line to the application.properties file:

azure.activedirectory.environment=cn

• Autowire AADAuthenticationFilter in WebSecurityConfig.java file

@Autowired
private AADAuthenticationFilter aadAuthFilter;

• Role-based Authorization with annotation @PreAuthorize("hasRole('GROUP_NAME')")
• Role-based Authorization with method isMemberOf()

Allow telemetry

Microsoft would like to collect data about how users use this Spring boot starter. Microsoft uses this information to improve our tooling experience. Participation is voluntary. If you don't want to participate, just simply disable it by setting below configuration in application.properties.

azure.activedirectory.allow-telemetry=false

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