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refactor: Cleanup and refactoring of new server API (#5368)
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126 changes: 126 additions & 0 deletions
126
ksqldb-rest-app/src/main/java/io/confluent/ksql/api/server/AuthHandlers.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| /* | ||
| * Copyright 2020 Confluent Inc. | ||
| * | ||
| * Licensed under the Confluent Community License (the "License"); you may not use | ||
| * this file except in compliance with the License. You may obtain a copy of the | ||
| * License at | ||
| * | ||
| * http://www.confluent.io/confluent-community-license | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT | ||
| * WARRANTIES OF ANY KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations under the License. | ||
| */ | ||
|
|
||
| package io.confluent.ksql.api.server; | ||
|
|
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| import static io.confluent.ksql.rest.Errors.ERROR_CODE_UNAUTHORIZED; | ||
| import static io.netty.handler.codec.http.HttpResponseStatus.UNAUTHORIZED; | ||
|
|
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| import io.confluent.ksql.api.auth.AuthenticationPlugin; | ||
| import io.confluent.ksql.api.auth.AuthenticationPluginHandler; | ||
| import io.confluent.ksql.api.auth.JaasAuthProvider; | ||
| import io.confluent.ksql.api.auth.KsqlAuthorizationProviderHandler; | ||
| import io.confluent.ksql.rest.server.KsqlRestConfig; | ||
| import io.confluent.ksql.security.KsqlSecurityExtension; | ||
| import io.vertx.core.Handler; | ||
| import io.vertx.ext.auth.AuthProvider; | ||
| import io.vertx.ext.web.Router; | ||
| import io.vertx.ext.web.RoutingContext; | ||
| import io.vertx.ext.web.handler.AuthHandler; | ||
| import io.vertx.ext.web.handler.BasicAuthHandler; | ||
| import java.util.Optional; | ||
|
|
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| public final class AuthHandlers { | ||
|
|
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| private AuthHandlers() { | ||
| } | ||
|
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| static void setupAuthHandlers(final Server server, final Router router) { | ||
| final Optional<AuthHandler> jaasAuthHandler = getJaasAuthHandler(server); | ||
| final KsqlSecurityExtension securityExtension = server.getSecurityExtension(); | ||
| final Optional<AuthenticationPlugin> authenticationPlugin = server.getAuthenticationPlugin(); | ||
| final Optional<Handler<RoutingContext>> pluginHandler = | ||
| authenticationPlugin.map(plugin -> new AuthenticationPluginHandler(server, plugin)); | ||
|
|
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| if (jaasAuthHandler.isPresent() || authenticationPlugin.isPresent()) { | ||
| router.route().handler(AuthHandlers::pauseHandler); | ||
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| router.route().handler(rc -> wrappedAuthHandler(rc, jaasAuthHandler, pluginHandler)); | ||
|
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| // For authorization use auth provider configured via security extension (if any) | ||
| securityExtension.getAuthorizationProvider() | ||
| .ifPresent(ksqlAuthorizationProvider -> router.route() | ||
| .handler(new KsqlAuthorizationProviderHandler(server.getWorkerExecutor(), | ||
| ksqlAuthorizationProvider))); | ||
|
|
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| router.route().handler(AuthHandlers::resumeHandler); | ||
| } | ||
| } | ||
|
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| private static void wrappedAuthHandler(final RoutingContext routingContext, | ||
| final Optional<AuthHandler> jaasAuthHandler, | ||
| final Optional<Handler<RoutingContext>> pluginHandler) { | ||
| if (jaasAuthHandler.isPresent()) { | ||
| // If we have a Jaas handler configured and we have Basic credentials then we should auth | ||
| // with that | ||
| final String authHeader = routingContext.request().getHeader("Authorization"); | ||
| if (authHeader != null && authHeader.toLowerCase().startsWith("basic ")) { | ||
| jaasAuthHandler.get().handle(routingContext); | ||
| return; | ||
| } | ||
| } | ||
| // Fall through to authing with any authentication plugin | ||
| if (pluginHandler.isPresent()) { | ||
| pluginHandler.get().handle(routingContext); | ||
| } else { | ||
| // Fail the request as unauthorized - this will occur if no auth plugin but Jaas handler | ||
| // is configured, but auth header is not basic auth | ||
| routingContext | ||
| .fail(UNAUTHORIZED.code(), | ||
| new KsqlApiException("Unauthorized", ERROR_CODE_UNAUTHORIZED)); | ||
| } | ||
| } | ||
|
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| private static Optional<AuthHandler> getJaasAuthHandler(final Server server) { | ||
| final String authMethod = server.getConfig() | ||
| .getString(KsqlRestConfig.AUTHENTICATION_METHOD_CONFIG); | ||
| switch (authMethod) { | ||
| case KsqlRestConfig.AUTHENTICATION_METHOD_BASIC: | ||
| return Optional.of(basicAuthHandler(server)); | ||
| case KsqlRestConfig.AUTHENTICATION_METHOD_NONE: | ||
| return Optional.empty(); | ||
| default: | ||
| throw new IllegalStateException(String.format( | ||
| "Unexpected value for %s: %s", | ||
| KsqlRestConfig.AUTHENTICATION_METHOD_CONFIG, | ||
| authMethod | ||
| )); | ||
| } | ||
| } | ||
|
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| private static AuthHandler basicAuthHandler(final Server server) { | ||
| final AuthProvider authProvider = new JaasAuthProvider(server, server.getConfig()); | ||
| final String realm = server.getConfig().getString(KsqlRestConfig.AUTHENTICATION_REALM_CONFIG); | ||
| final AuthHandler basicAuthHandler = BasicAuthHandler.create(authProvider, realm); | ||
| // It doesn't matter what we set here as we actually do the authorisation at the | ||
| // authentication stage and cache the result, but we must add an authority or | ||
| // no authorisation will be done | ||
| basicAuthHandler.addAuthority("ksql"); | ||
| return basicAuthHandler; | ||
| } | ||
|
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| private static void pauseHandler(final RoutingContext routingContext) { | ||
| // prevent auth handler from reading request body | ||
| routingContext.request().pause(); | ||
| routingContext.next(); | ||
| } | ||
|
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| private static void resumeHandler(final RoutingContext routingContext) { | ||
| // Un-pause body handling as async auth provider calls have completed by this point | ||
| routingContext.request().resume(); | ||
| routingContext.next(); | ||
| } | ||
|
|
||
| } |
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