Complete OAuth2 authorization support #1446
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| /* | ||
| * Copyright 2020-Present The Serverless Workflow Specification Authors | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package io.serverlessworkflow.impl.auth; | ||
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|
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| import static io.serverlessworkflow.api.types.OAuth2AuthenticationData.OAuth2AuthenticationDataGrant.PASSWORD; | ||
| import static io.serverlessworkflow.impl.auth.AuthUtils.ASSERTION; | ||
| import static io.serverlessworkflow.impl.auth.AuthUtils.CLIENT; | ||
| import static io.serverlessworkflow.impl.auth.AuthUtils.CLIENT_ASSERTION; | ||
| import static io.serverlessworkflow.impl.auth.AuthUtils.CLIENT_ASSERTION_TYPE; | ||
| import static io.serverlessworkflow.impl.auth.AuthUtils.CLIENT_ID; | ||
| import static io.serverlessworkflow.impl.auth.AuthUtils.GRANT; | ||
| import static io.serverlessworkflow.impl.auth.AuthUtils.ID; | ||
| import static io.serverlessworkflow.impl.auth.AuthUtils.JWT_BEARER_ASSERTION_TYPE; | ||
| import static io.serverlessworkflow.impl.auth.AuthUtils.USER; | ||
|
|
||
| import io.serverlessworkflow.api.types.OAuth2AuthenticationData; | ||
| import io.serverlessworkflow.impl.WorkflowApplication; | ||
| import io.serverlessworkflow.impl.WorkflowUtils; | ||
| import java.util.Map; | ||
|
|
||
| /** | ||
| * Handles the {@code client_secret_jwt} and {@code private_key_jwt} client authentication methods. | ||
| * | ||
| * <p>Per the Serverless Workflow specification, the caller supplies a pre-signed JWT through {@code | ||
| * client.assertion}. Both methods are forwarded identically: the assertion is sent as {@code | ||
| * client_assertion} together with the standard {@code client_assertion_type} defined by RFC 7523. | ||
| * The signing algorithm (HMAC for {@code client_secret_jwt}, an asymmetric key for {@code | ||
| * private_key_jwt}) is the caller's responsibility. | ||
| */ | ||
| class JwtClientAssertion extends ClientSecretHandler { | ||
|
|
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| protected JwtClientAssertion( | ||
| WorkflowApplication application, HttpRequestInfoBuilder requestBuilder) { | ||
| super(application, requestBuilder); | ||
| } | ||
|
|
||
| @Override | ||
| void accept(OAuth2AuthenticationData authenticationData) { | ||
| if (authenticationData.getClient() == null | ||
| || authenticationData.getClient().getAssertion() == null) { | ||
| throw new IllegalArgumentException( | ||
| "A client assertion must be provided for JWT client authentication"); | ||
| } | ||
| if (authenticationData.getGrant().equals(PASSWORD)) { | ||
| if (authenticationData.getUsername() == null || authenticationData.getPassword() == null) { | ||
| throw new IllegalArgumentException( | ||
| "Username and password must be provided for password grant type"); | ||
| } | ||
| password(authenticationData); | ||
| } else { | ||
| clientCredentials(authenticationData); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| void accept(Map<String, Object> secret) { | ||
| Map<String, Object> client = asClient(secret); | ||
| if (client == null || client.get(ASSERTION) == null) { | ||
| throw new IllegalArgumentException( | ||
| "A client assertion must be provided for JWT client authentication"); | ||
| } | ||
| if (PASSWORD.value().equals(secret.get(GRANT))) { | ||
| password(secret); | ||
| } else { | ||
| clientCredentials(secret); | ||
| } | ||
| } | ||
|
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| @Override | ||
| protected void clientCredentials(OAuth2AuthenticationData authenticationData) { | ||
| requestBuilder.withGrantType(authenticationData.getGrant().value()); | ||
| addAssertion( | ||
| authenticationData.getClient().getId(), authenticationData.getClient().getAssertion()); | ||
| } | ||
|
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| @Override | ||
| protected void password(OAuth2AuthenticationData authenticationData) { | ||
| clientCredentials(authenticationData); | ||
| requestBuilder | ||
| .addQueryParam( | ||
| "username", | ||
| WorkflowUtils.buildStringFilter(application, authenticationData.getUsername())) | ||
| .addQueryParam( | ||
| "password", | ||
| WorkflowUtils.buildStringFilter(application, authenticationData.getPassword())); | ||
| } | ||
|
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| @Override | ||
| protected void clientCredentials(Map<String, Object> secret) { | ||
| Map<String, Object> client = asClient(secret); | ||
| requestBuilder.withGrantType((String) secret.get(GRANT)); | ||
| addAssertion((String) client.get(ID), (String) client.get(ASSERTION)); | ||
| } | ||
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| @Override | ||
| protected void password(Map<String, Object> secret) { | ||
| clientCredentials(secret); | ||
| requestBuilder | ||
| .addQueryParam("username", (String) secret.get(USER)) | ||
| .addQueryParam("password", (String) secret.get(AuthUtils.PASSWORD)); | ||
| } | ||
|
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| private void addAssertion(String clientId, String assertion) { | ||
| if (clientId != null) { | ||
| requestBuilder.addQueryParam( | ||
| CLIENT_ID, WorkflowUtils.buildStringFilter(application, clientId)); | ||
| } | ||
| requestBuilder | ||
| .addQueryParam(CLIENT_ASSERTION_TYPE, JWT_BEARER_ASSERTION_TYPE) | ||
| .addQueryParam(CLIENT_ASSERTION, WorkflowUtils.buildStringFilter(application, assertion)); | ||
| } | ||
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| @SuppressWarnings("unchecked") | ||
| private static Map<String, Object> asClient(Map<String, Object> secret) { | ||
| return (Map<String, Object>) secret.get(CLIENT); | ||
| } | ||
|
fjtirado marked this conversation as resolved.
|
||
| } | ||
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