Core Interfaces / Classes
ClientRegistration
ClientRegistration
is a representation of a client registered with an OAuth 2.0 or OpenID Connect 1.0 Provider.
A client registration holds information, such as client id, client secret, authorization grant type, redirect URI, scope(s), authorization URI, token URI, and other details.
ClientRegistration
and its properties are defined as follows:
public final class ClientRegistration {
private String registrationId; (1)
private String clientId; (2)
private String clientSecret; (3)
private ClientAuthenticationMethod clientAuthenticationMethod; (4)
private AuthorizationGrantType authorizationGrantType; (5)
private String redirectUri; (6)
private Set<String> scopes; (7)
private ProviderDetails providerDetails;
private String clientName; (8)
public class ProviderDetails {
private String authorizationUri; (9)
private String tokenUri; (10)
private UserInfoEndpoint userInfoEndpoint;
private String jwkSetUri; (11)
private String issuerUri; (12)
private Map<String, Object> configurationMetadata; (13)
public class UserInfoEndpoint {
private String uri; (14)
private AuthenticationMethod authenticationMethod; (15)
private String userNameAttributeName; (16)
}
}
}
1 | registrationId : The ID that uniquely identifies the ClientRegistration . |
2 | clientId : The client identifier. |
3 | clientSecret : The client secret. |
4 | clientAuthenticationMethod : The method used to authenticate the Client with the Provider.
The supported values are client_secret_basic, client_secret_post, private_key_jwt, client_secret_jwt and none (public clients). |
5 | authorizationGrantType : The OAuth 2.0 Authorization Framework defines four Authorization Grant types.
The supported values are authorization_code , client_credentials , password , as well as, extension grant type urn:ietf:params:oauth:grant-type:jwt-bearer . |
6 | redirectUri : The client’s registered redirect URI that the Authorization Server redirects the end-user’s user-agent
to after the end-user has authenticated and authorized access to the client. |
7 | scopes : The scope(s) requested by the client during the Authorization Request flow, such as openid, email, or profile. |
8 | clientName : A descriptive name used for the client.
The name may be used in certain scenarios, such as when displaying the name of the client in the auto-generated login page. |
9 | authorizationUri : The Authorization Endpoint URI for the Authorization Server. |
10 | tokenUri : The Token Endpoint URI for the Authorization Server. |
11 | jwkSetUri : The URI used to retrieve the JSON Web Key (JWK) Set from the Authorization Server,
which contains the cryptographic key(s) used to verify the JSON Web Signature (JWS) of the ID Token and optionally the UserInfo Response. |
12 | issuerUri : Returns the issuer identifier uri for the OpenID Connect 1.0 provider or the OAuth 2.0 Authorization Server. |
13 | configurationMetadata : The OpenID Provider Configuration Information.
This information will only be available if the Spring Boot 2.x property spring.security.oauth2.client.provider.[providerId].issuerUri is configured. |
14 | (userInfoEndpoint)uri : The UserInfo Endpoint URI used to access the claims/attributes of the authenticated end-user. |
15 | (userInfoEndpoint)authenticationMethod : The authentication method used when sending the access token to the UserInfo Endpoint.
The supported values are header, form and query. |
16 | userNameAttributeName : The name of the attribute returned in the UserInfo Response that references the Name or Identifier of the end-user. |
A ClientRegistration
can be initially configured using discovery of an OpenID Connect Provider’s Configuration endpoint or an Authorization Server’s Metadata endpoint.
ClientRegistrations
provides convenience methods for configuring a ClientRegistration
in this way, as can be seen in the following example:
-
Java
-
Kotlin
ClientRegistration clientRegistration =
ClientRegistrations.fromIssuerLocation("https://idp.example.com/issuer").build();
val clientRegistration = ClientRegistrations.fromIssuerLocation("https://idp.example.com/issuer").build()
The above code will query in series idp.example.com/issuer/.well-known/openid-configuration
, and then idp.example.com/.well-known/openid-configuration/issuer
, and finally idp.example.com/.well-known/oauth-authorization-server/issuer
, stopping at the first to return a 200 response.
As an alternative, you can use ClientRegistrations.fromOidcIssuerLocation()
to only query the OpenID Connect Provider’s Configuration endpoint.
ReactiveClientRegistrationRepository
The ReactiveClientRegistrationRepository
serves as a repository for OAuth 2.0 / OpenID Connect 1.0 ClientRegistration
(s).
Client registration information is ultimately stored and owned by the associated Authorization Server. This repository provides the ability to retrieve a sub-set of the primary client registration information, which is stored with the Authorization Server. |
Spring Boot 2.x auto-configuration binds each of the properties under spring.security.oauth2.client.registration.[registrationId]
to an instance of ClientRegistration
and then composes each of the ClientRegistration
instance(s) within a ReactiveClientRegistrationRepository
.
The default implementation of ReactiveClientRegistrationRepository is InMemoryReactiveClientRegistrationRepository .
|
The auto-configuration also registers the ReactiveClientRegistrationRepository
as a @Bean
in the ApplicationContext
so that it is available for dependency-injection, if needed by the application.
The following listing shows an example:
-
Java
-
Kotlin
@Controller
public class OAuth2ClientController {
@Autowired
private ReactiveClientRegistrationRepository clientRegistrationRepository;
@GetMapping("/")
public Mono<String> index() {
return this.clientRegistrationRepository.findByRegistrationId("okta")
...
.thenReturn("index");
}
}
@Controller
class OAuth2ClientController {
@Autowired
private lateinit var clientRegistrationRepository: ReactiveClientRegistrationRepository
@GetMapping("/")
fun index(): Mono<String> {
return this.clientRegistrationRepository.findByRegistrationId("okta")
...
.thenReturn("index")
}
}
OAuth2AuthorizedClient
OAuth2AuthorizedClient
is a representation of an Authorized Client.
A client is considered to be authorized when the end-user (Resource Owner) has granted authorization to the client to access its protected resources.
OAuth2AuthorizedClient
serves the purpose of associating an OAuth2AccessToken
(and optional OAuth2RefreshToken
) to a ClientRegistration
(client) and resource owner, who is the Principal
end-user that granted the authorization.
ServerOAuth2AuthorizedClientRepository / ReactiveOAuth2AuthorizedClientService
ServerOAuth2AuthorizedClientRepository
is responsible for persisting OAuth2AuthorizedClient
(s) between web requests.
Whereas, the primary role of ReactiveOAuth2AuthorizedClientService
is to manage OAuth2AuthorizedClient
(s) at the application-level.
From a developer perspective, the ServerOAuth2AuthorizedClientRepository
or ReactiveOAuth2AuthorizedClientService
provides the capability to lookup an OAuth2AccessToken
associated with a client so that it may be used to initiate a protected resource request.
The following listing shows an example:
-
Java
-
Kotlin
@Controller
public class OAuth2ClientController {
@Autowired
private ReactiveOAuth2AuthorizedClientService authorizedClientService;
@GetMapping("/")
public Mono<String> index(Authentication authentication) {
return this.authorizedClientService.loadAuthorizedClient("okta", authentication.getName())
.map(OAuth2AuthorizedClient::getAccessToken)
...
.thenReturn("index");
}
}
@Controller
class OAuth2ClientController {
@Autowired
private lateinit var authorizedClientService: ReactiveOAuth2AuthorizedClientService
@GetMapping("/")
fun index(authentication: Authentication): Mono<String> {
return this.authorizedClientService.loadAuthorizedClient<OAuth2AuthorizedClient>("okta", authentication.name)
.map { it.accessToken }
...
.thenReturn("index")
}
}
Spring Boot 2.x auto-configuration registers an ServerOAuth2AuthorizedClientRepository and/or ReactiveOAuth2AuthorizedClientService @Bean in the ApplicationContext .
However, the application may choose to override and register a custom ServerOAuth2AuthorizedClientRepository or ReactiveOAuth2AuthorizedClientService @Bean .
|
The default implementation of ReactiveOAuth2AuthorizedClientService
is InMemoryReactiveOAuth2AuthorizedClientService
, which stores OAuth2AuthorizedClient
(s) in-memory.
Alternatively, the R2DBC implementation R2dbcReactiveOAuth2AuthorizedClientService
may be configured for persisting OAuth2AuthorizedClient
(s) in a database.
R2dbcReactiveOAuth2AuthorizedClientService depends on the table definition described in OAuth 2.0 Client Schema.
|
ReactiveOAuth2AuthorizedClientManager / ReactiveOAuth2AuthorizedClientProvider
The ReactiveOAuth2AuthorizedClientManager
is responsible for the overall management of OAuth2AuthorizedClient
(s).
The primary responsibilities include:
-
Authorizing (or re-authorizing) an OAuth 2.0 Client, using a
ReactiveOAuth2AuthorizedClientProvider
. -
Delegating the persistence of an
OAuth2AuthorizedClient
, typically using aReactiveOAuth2AuthorizedClientService
orServerOAuth2AuthorizedClientRepository
. -
Delegating to a
ReactiveOAuth2AuthorizationSuccessHandler
when an OAuth 2.0 Client has been successfully authorized (or re-authorized). -
Delegating to a
ReactiveOAuth2AuthorizationFailureHandler
when an OAuth 2.0 Client fails to authorize (or re-authorize).
A ReactiveOAuth2AuthorizedClientProvider
implements a strategy for authorizing (or re-authorizing) an OAuth 2.0 Client.
Implementations will typically implement an authorization grant type, eg. authorization_code
, client_credentials
, etc.
The default implementation of ReactiveOAuth2AuthorizedClientManager
is DefaultReactiveOAuth2AuthorizedClientManager
, which is associated with a ReactiveOAuth2AuthorizedClientProvider
that may support multiple authorization grant types using a delegation-based composite.
The ReactiveOAuth2AuthorizedClientProviderBuilder
may be used to configure and build the delegation-based composite.
The following code shows an example of how to configure and build a ReactiveOAuth2AuthorizedClientProvider
composite that provides support for the authorization_code
, refresh_token
, client_credentials
and password
authorization grant types:
-
Java
-
Kotlin
@Bean
public ReactiveOAuth2AuthorizedClientManager authorizedClientManager(
ReactiveClientRegistrationRepository clientRegistrationRepository,
ServerOAuth2AuthorizedClientRepository authorizedClientRepository) {
ReactiveOAuth2AuthorizedClientProvider authorizedClientProvider =
ReactiveOAuth2AuthorizedClientProviderBuilder.builder()
.authorizationCode()
.refreshToken()
.clientCredentials()
.password()
.build();
DefaultReactiveOAuth2AuthorizedClientManager authorizedClientManager =
new DefaultReactiveOAuth2AuthorizedClientManager(
clientRegistrationRepository, authorizedClientRepository);
authorizedClientManager.setAuthorizedClientProvider(authorizedClientProvider);
return authorizedClientManager;
}
@Bean
fun authorizedClientManager(
clientRegistrationRepository: ReactiveClientRegistrationRepository,
authorizedClientRepository: ServerOAuth2AuthorizedClientRepository): ReactiveOAuth2AuthorizedClientManager {
val authorizedClientProvider: ReactiveOAuth2AuthorizedClientProvider = ReactiveOAuth2AuthorizedClientProviderBuilder.builder()
.authorizationCode()
.refreshToken()
.clientCredentials()
.password()
.build()
val authorizedClientManager = DefaultReactiveOAuth2AuthorizedClientManager(
clientRegistrationRepository, authorizedClientRepository)
authorizedClientManager.setAuthorizedClientProvider(authorizedClientProvider)
return authorizedClientManager
}
When an authorization attempt succeeds, the DefaultReactiveOAuth2AuthorizedClientManager
will delegate to the ReactiveOAuth2AuthorizationSuccessHandler
, which (by default) will save the OAuth2AuthorizedClient
via the ServerOAuth2AuthorizedClientRepository
.
In the case of a re-authorization failure, eg. a refresh token is no longer valid, the previously saved OAuth2AuthorizedClient
will be removed from the ServerOAuth2AuthorizedClientRepository
via the RemoveAuthorizedClientReactiveOAuth2AuthorizationFailureHandler
.
The default behaviour may be customized via setAuthorizationSuccessHandler(ReactiveOAuth2AuthorizationSuccessHandler)
and setAuthorizationFailureHandler(ReactiveOAuth2AuthorizationFailureHandler)
.
The DefaultReactiveOAuth2AuthorizedClientManager
is also associated with a contextAttributesMapper
of type Function<OAuth2AuthorizeRequest, Mono<Map<String, Object>>>
, which is responsible for mapping attribute(s) from the OAuth2AuthorizeRequest
to a Map
of attributes to be associated to the OAuth2AuthorizationContext
.
This can be useful when you need to supply a ReactiveOAuth2AuthorizedClientProvider
with required (supported) attribute(s), eg. the PasswordReactiveOAuth2AuthorizedClientProvider
requires the resource owner’s username
and password
to be available in OAuth2AuthorizationContext.getAttributes()
.
The following code shows an example of the contextAttributesMapper
:
-
Java
-
Kotlin
@Bean
public ReactiveOAuth2AuthorizedClientManager authorizedClientManager(
ReactiveClientRegistrationRepository clientRegistrationRepository,
ServerOAuth2AuthorizedClientRepository authorizedClientRepository) {
ReactiveOAuth2AuthorizedClientProvider authorizedClientProvider =
ReactiveOAuth2AuthorizedClientProviderBuilder.builder()
.password()
.refreshToken()
.build();
DefaultReactiveOAuth2AuthorizedClientManager authorizedClientManager =
new DefaultReactiveOAuth2AuthorizedClientManager(
clientRegistrationRepository, authorizedClientRepository);
authorizedClientManager.setAuthorizedClientProvider(authorizedClientProvider);
// Assuming the `username` and `password` are supplied as `ServerHttpRequest` parameters,
// map the `ServerHttpRequest` parameters to `OAuth2AuthorizationContext.getAttributes()`
authorizedClientManager.setContextAttributesMapper(contextAttributesMapper());
return authorizedClientManager;
}
private Function<OAuth2AuthorizeRequest, Mono<Map<String, Object>>> contextAttributesMapper() {
return authorizeRequest -> {
Map<String, Object> contextAttributes = Collections.emptyMap();
ServerWebExchange exchange = authorizeRequest.getAttribute(ServerWebExchange.class.getName());
ServerHttpRequest request = exchange.getRequest();
String username = request.getQueryParams().getFirst(OAuth2ParameterNames.USERNAME);
String password = request.getQueryParams().getFirst(OAuth2ParameterNames.PASSWORD);
if (StringUtils.hasText(username) && StringUtils.hasText(password)) {
contextAttributes = new HashMap<>();
// `PasswordReactiveOAuth2AuthorizedClientProvider` requires both attributes
contextAttributes.put(OAuth2AuthorizationContext.USERNAME_ATTRIBUTE_NAME, username);
contextAttributes.put(OAuth2AuthorizationContext.PASSWORD_ATTRIBUTE_NAME, password);
}
return Mono.just(contextAttributes);
};
}
@Bean
fun authorizedClientManager(
clientRegistrationRepository: ReactiveClientRegistrationRepository,
authorizedClientRepository: ServerOAuth2AuthorizedClientRepository): ReactiveOAuth2AuthorizedClientManager {
val authorizedClientProvider: ReactiveOAuth2AuthorizedClientProvider = ReactiveOAuth2AuthorizedClientProviderBuilder.builder()
.password()
.refreshToken()
.build()
val authorizedClientManager = DefaultReactiveOAuth2AuthorizedClientManager(
clientRegistrationRepository, authorizedClientRepository)
authorizedClientManager.setAuthorizedClientProvider(authorizedClientProvider)
// Assuming the `username` and `password` are supplied as `ServerHttpRequest` parameters,
// map the `ServerHttpRequest` parameters to `OAuth2AuthorizationContext.getAttributes()`
authorizedClientManager.setContextAttributesMapper(contextAttributesMapper())
return authorizedClientManager
}
private fun contextAttributesMapper(): Function<OAuth2AuthorizeRequest, Mono<MutableMap<String, Any>>> {
return Function { authorizeRequest ->
var contextAttributes: MutableMap<String, Any> = mutableMapOf()
val exchange: ServerWebExchange = authorizeRequest.getAttribute(ServerWebExchange::class.java.name)!!
val request: ServerHttpRequest = exchange.request
val username: String? = request.queryParams.getFirst(OAuth2ParameterNames.USERNAME)
val password: String? = request.queryParams.getFirst(OAuth2ParameterNames.PASSWORD)
if (StringUtils.hasText(username) && StringUtils.hasText(password)) {
contextAttributes = hashMapOf()
// `PasswordReactiveOAuth2AuthorizedClientProvider` requires both attributes
contextAttributes[OAuth2AuthorizationContext.USERNAME_ATTRIBUTE_NAME] = username!!
contextAttributes[OAuth2AuthorizationContext.PASSWORD_ATTRIBUTE_NAME] = password!!
}
Mono.just(contextAttributes)
}
}
The DefaultReactiveOAuth2AuthorizedClientManager
is designed to be used within the context of a ServerWebExchange
.
When operating outside of a ServerWebExchange
context, use AuthorizedClientServiceReactiveOAuth2AuthorizedClientManager
instead.
A service application is a common use case for when to use an AuthorizedClientServiceReactiveOAuth2AuthorizedClientManager
.
Service applications often run in the background, without any user interaction, and typically run under a system-level account instead of a user account.
An OAuth 2.0 Client configured with the client_credentials
grant type can be considered a type of service application.
The following code shows an example of how to configure an AuthorizedClientServiceReactiveOAuth2AuthorizedClientManager
that provides support for the client_credentials
grant type:
-
Java
-
Kotlin
@Bean
public ReactiveOAuth2AuthorizedClientManager authorizedClientManager(
ReactiveClientRegistrationRepository clientRegistrationRepository,
ReactiveOAuth2AuthorizedClientService authorizedClientService) {
ReactiveOAuth2AuthorizedClientProvider authorizedClientProvider =
ReactiveOAuth2AuthorizedClientProviderBuilder.builder()
.clientCredentials()
.build();
AuthorizedClientServiceReactiveOAuth2AuthorizedClientManager authorizedClientManager =
new AuthorizedClientServiceReactiveOAuth2AuthorizedClientManager(
clientRegistrationRepository, authorizedClientService);
authorizedClientManager.setAuthorizedClientProvider(authorizedClientProvider);
return authorizedClientManager;
}
@Bean
fun authorizedClientManager(
clientRegistrationRepository: ReactiveClientRegistrationRepository,
authorizedClientService: ReactiveOAuth2AuthorizedClientService): ReactiveOAuth2AuthorizedClientManager {
val authorizedClientProvider: ReactiveOAuth2AuthorizedClientProvider = ReactiveOAuth2AuthorizedClientProviderBuilder.builder()
.clientCredentials()
.build()
val authorizedClientManager = AuthorizedClientServiceReactiveOAuth2AuthorizedClientManager(
clientRegistrationRepository, authorizedClientService)
authorizedClientManager.setAuthorizedClientProvider(authorizedClientProvider)
return authorizedClientManager
}