使用Keycloak保护类型安全的微配置文件RestClientBuilder

Question

我具有以下设置：Keycloak9.0.0在端口8180上运行在端口8080上运行的Spring Boot服务器应用程序演示客户端应用程序，使用CxfTypeSafeClientBuilder访问服务器服务

[Keycloak-Spring Boot交互工作正常，如果我将其作为Authorization标头传递，我可以从Keycloak接收令牌，并且演示服务正在验证令牌。

我应该如何配置CxfTypeSafeClientBuilder / RestClientBuilder以处理从Keycloak实例获得的JWT令牌？如果必须，我是否必须构建自己的ClientResponseFilter？如何处理过期的令牌？我没有找到任何现有的实现/标准吗？

JAX-RS Web服务界面：

@Path("/demo")
public interface IDemoService {

    @GET
    @Path("/test")
    String test();

}

简单的Spring Security配置：

http.cors().and().csrf().disable().sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
    .sessionAuthenticationStrategy(sessionAuthenticationStrategy()).and().authorizeRequests().antMatchers("/**")
    .authenticated();

编辑：从服务器获取初始访问权限和刷新令牌的新解决方法：

AccessTokenResponse tokens = AuthUtil.getAuthTokens("http://localhost:8180/auth", "share-server", "test", "test", "share-server-service-login");
String accessToken = tokens.getToken();
String refreshToken = tokens.getRefreshToken();

客户端进行服务呼叫，直到令牌过期：

URI apiUri = new URI("http://localhost:8080/services/");
RestClientBuilder client = new CxfTypeSafeClientBuilder().baseUri(apiUri).register(new TokenFilter(accessToken, refreshToken));

IDemoService service = client.build(IDemoService.class);
for (int i = 0; i < 200; i++) {
    System.out.println("client: " + new Date() + " " + service.test());
    Thread.sleep(10000);
}

TokenFilter，直到访问令牌过期：

public static class TokenFilter implements ClientRequestFilter, ClientResponseFilter {

    private String accessToken;
    private String refreshToken;

    public TokenFilter(String accessToken, String refreshToken) {
        this.accessToken = accessToken;
        this.refreshToken = refreshToken;
    }

    @Override
    public void filter(ClientRequestContext requestContext, ClientResponseContext responseContext) throws IOException {
        if (responseContext.getStatus() == 401 && "invalid_token".equals(responseContext.getStatusInfo().getReasonPhrase())) {
            // maybe handle send the refresh token... probalby should be handled earlier using the 'expires' value
        }
    }

    @Override
    public void filter(ClientRequestContext requestContext) throws IOException {
        if (accessToken != null && !accessToken.isEmpty()) {
            requestContext.getHeaders().add(HttpHeaders.AUTHORIZATION, "Bearer" + " " + accessToken);
        }
    }
}

Answer 1

我找到了一个自动刷新访问令牌的解决方案，但是现在我对keycloak-client-registration-cli有依赖性（实际上是为了提供一个控制台）。可能会有更好的解决方案，而这些依赖关系不那么繁重。当前如果登录失败或已实施其他异常处理，则不进行任何处理。

String serverUrl = "http://localhost:8180/auth";
String realm = "share-server";
String clientId = "share-server-service-login";
String username = "test";
String password = "test";

// initial token after login
AccessTokenResponse token = AuthUtil.getAuthTokens(serverUrl, realm, username, password, clientId);

String accessToken = token.getToken();
String refreshToken = token.getRefreshToken();

ConfigData configData = new ConfigData();
configData.setRealm(realm);
configData.setServerUrl(serverUrl);

RealmConfigData realmConfigData = configData.sessionRealmConfigData();
realmConfigData.setClientId(clientId);
realmConfigData.setExpiresAt(System.currentTimeMillis() + token.getExpiresIn() * 1000);
realmConfigData.setRefreshExpiresAt(System.currentTimeMillis() + token.getRefreshExpiresIn() * 1000);
realmConfigData.setToken(accessToken);
realmConfigData.setRefreshToken(refreshToken);

ConfigUtil.setupInMemoryHandler(configData);

URI apiUri = new URI("http://localhost:8080/services/");
RestClientBuilder client = new CxfTypeSafeClientBuilder().baseUri(apiUri).register(new TokenFilter(configData));
IDemoService service = client.build(IDemoService.class);
for (int i = 0; i < 200; i++) {
    System.out.println("client: " + new Date() + " " + service.test());
    Thread.sleep(10000);
}

如果使用AuthUtil.ensureToken(configData)过期，则过滤器会自动刷新访问令牌：

@Priority(Priorities.AUTHENTICATION)
public static class TokenFilter implements ClientRequestFilter {

    private ConfigData configData;

    public TokenFilter(ConfigData configData) {
        this.configData = configData;
    }

    @Override
    public void filter(ClientRequestContext requestContext) throws IOException {
        String accessToken = AuthUtil.ensureToken(configData);
        if (accessToken != null && !accessToken.isEmpty()) {
            requestContext.getHeaders().add(HttpHeaders.AUTHORIZATION, "Bearer" + " " + accessToken);
        }
    }
}

Answer 2

找到了仅依赖于keycloak-authz-client的更好的解决方案：

String serverUrl = "http://localhost:8180/auth";
String realm = "share-server";
String clientId = "share-server-service-login";
String clientSecret = "e70752a6-8910-4043-8926-03661f43398c";
String username = "test";
String password = "test";

Map<String, Object> credentials = new HashMap<>();
credentials.put("secret", clientSecret);
Configuration configuration = new Configuration(serverUrl, realm, clientId, credentials, null);
AuthzClient authzClient = AuthzClient.create(configuration);

AuthorizationResource authorizationResource = authzClient.authorization(username, password);

URI apiUri = new URI("http://localhost:8080/services/");
RestClientBuilder client = new CxfTypeSafeClientBuilder().baseUri(apiUri).register(new TokenFilter(authorizationResource));
IDemoService service = client.build(IDemoService.class);
for (int i = 0; i < 200; i++) {
    System.out.println("client: " + new Date() + " " + service.test());
    Thread.sleep(10000);
}

[authorizationResource.authorize()将在后台使用org.keycloak.authorization.client.util.TokenCallable.call()，这将验证令牌到期时间并在必要时自动刷新令牌。

所以String accessToken = authorize.getToken();将始终是当前有效的令牌。

@Priority(Priorities.AUTHENTICATION)
public static class TokenFilter implements ClientRequestFilter {

    private AuthorizationResource authorizationResource;

    public TokenFilter(AuthorizationResource authorizationResource) {
        this.authorizationResource = authorizationResource;
    }

    @Override
    public void filter(ClientRequestContext requestContext) throws IOException {
        AuthorizationResponse authorize = authorizationResource.authorize();
        String accessToken = authorize.getToken();
        System.out.println(accessToken);
        if (accessToken != null && !accessToken.isEmpty()) {
            requestContext.getHeaders().add(HttpHeaders.AUTHORIZATION, "Bearer" + " " + accessToken);
        }
    }
}

Answer 3

使用Apache CXF OAuth2]的更通用的解决方案（cxf-rt-rs-security-oauth2），不带ClientRequestFilter。BearerAuthSupplier自动处理refreshTokens并接收新的accessTokens。

String serverUrl = "http://localhost:8180/auth";
String realm = "share-server";
String clientId = "share-server-service-login";
String clientSecret = "e70752a6-8910-4043-8926-03661f43398c";
String username = "test";
String password = "test";

String tokenUri = serverUrl + "/realms/" + realm + "/protocol/openid-connect/token";

Consumer consumer = new Consumer(clientId);

ResourceOwnerGrant grant = new ResourceOwnerGrant(username, password);
ClientAccessToken initial = OAuthClientUtils.getAccessToken(tokenUri, consumer, grant, true);

BearerAuthSupplier supplier = new BearerAuthSupplier();
supplier.setAccessToken(initial.getTokenKey());
supplier.setRefreshToken(initial.getRefreshToken());
supplier.setConsumer(consumer);
supplier.setAccessTokenServiceUri(tokenUri);

HTTPConduitConfigurer httpConduitConfigurer = new HTTPConduitConfigurer() {
    @Override
    public void configure(String name, String address, HTTPConduit c) {
        c.setAuthSupplier(supplier);
    }
};

Bus bus = BusFactory.getThreadDefaultBus();
bus.setExtension(httpConduitConfigurer, HTTPConduitConfigurer.class);

URI apiUri = new URI("http://localhost:8080/services/");
RestClientBuilder client = new CxfTypeSafeClientBuilder().baseUri(apiUri);

IDemoService service = client.build(IDemoService.class);
for (int i = 0; i < 200; i++) {
    System.out.println("client: " + new Date() + " " + service.test());
    Thread.sleep(5 * 60 * 1000);
}
代替使用用户名和密码（ResourceOwnerGrant）登录，也可以将客户端凭据与ClientCredentialsGrant一起使用。

ClientCredentialsGrant grant = new ClientCredentialsGrant();
grant.setClientId(clientId);
grant.setClientSecret(clientSecret);