/*
* Copyright 2015 the original author or 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 org.springframework.statemachine.security;
import static org.hamcrest.Matchers.containsInAnyOrder;
import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertThat;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.task.SyncTaskExecutor;
import org.springframework.security.test.context.support.WithMockUser;
import org.springframework.statemachine.AbstractStateMachineTests;
import org.springframework.statemachine.StateMachine;
import org.springframework.statemachine.config.StateMachineBuilder;
import org.springframework.statemachine.config.StateMachineBuilder.Builder;
import org.springframework.statemachine.config.configurers.ExternalTransitionConfigurer;
import org.springframework.statemachine.listener.StateMachineListenerAdapter;
import org.springframework.statemachine.security.SecurityRule.ComparisonType;
import org.springframework.statemachine.state.State;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.annotation.DirtiesContext.ClassMode;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
/**
* Tests for securing transitions.
*
* @author Janne Valkealahti
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration
@DirtiesContext(classMode = ClassMode.BEFORE_EACH_TEST_METHOD)
public class TransitionSecurityExpressionTests extends AbstractStateMachineTests {
@Test
@WithMockUser(authorities = { "FOO" })
public void testAttr() throws Exception {
TestListener listener = new TestListener();
StateMachine<States,Events> machine = buildMachine(listener, "ROLE_ANONYMOUS", ComparisonType.ANY, null);
assertTransitionDenied(machine, listener);
}
@Test
@WithMockUser(roles = { "FOO" })
public void testExpression() throws Exception {
TestListener listener = new TestListener();
StateMachine<States,Events> machine = buildMachine(listener, null, null, "hasRole('FOO')");
assertTransitionAllowed(machine, listener);
}
private static void assertTransitionAllowed(StateMachine<States, Events> machine, TestListener listener) throws Exception {
assertThat(listener.stateChangedLatch.await(2, TimeUnit.SECONDS), is(true));
assertThat(listener.stateChangedCount, is(1));
assertThat(machine.getState().getIds(), containsInAnyOrder(States.S0));
listener.reset(1);
machine.sendEvent(Events.A);
assertThat(listener.stateChangedLatch.await(2, TimeUnit.SECONDS), is(true));
assertThat(listener.stateChangedCount, is(1));
assertThat(machine.getState().getIds(), containsInAnyOrder(States.S1));
}
private static void assertTransitionDenied(StateMachine<States, Events> machine, TestListener listener) throws Exception {
assertThat(listener.stateChangedLatch.await(2, TimeUnit.SECONDS), is(true));
assertThat(listener.stateChangedCount, is(1));
assertThat(machine.getState().getIds(), containsInAnyOrder(States.S0));
listener.reset(1);
machine.sendEvent(Events.A);
assertThat(listener.stateChangedLatch.await(2, TimeUnit.SECONDS), is(false));
assertThat(listener.stateChangedCount, is(0));
assertThat(machine.getState().getIds(), containsInAnyOrder(States.S0));
}
@Configuration
public static class Config {
}
public static enum States {
S0, S1;
}
public static enum Events {
A;
}
private static class TestListener extends StateMachineListenerAdapter<States, Events> {
volatile CountDownLatch stateChangedLatch = new CountDownLatch(1);
volatile int stateChangedCount = 0;
@Override
public void stateChanged(State<States, Events> from, State<States, Events> to) {
stateChangedCount++;
stateChangedLatch.countDown();
}
public void reset(int c1) {
stateChangedLatch = new CountDownLatch(c1);
stateChangedCount = 0;
}
}
private static StateMachine<States, Events> buildMachine(TestListener listener, String attributes, ComparisonType match, String expression) throws Exception {
Builder<States, Events> builder = StateMachineBuilder.<States, Events>builder();
builder.configureConfiguration()
.withConfiguration()
.listener(listener)
.autoStartup(true)
.taskExecutor(new SyncTaskExecutor())
.and()
.withSecurity()
.enabled(true);
builder.configureStates()
.withStates()
.initial(States.S0)
.state(States.S0)
.state(States.S1);
ExternalTransitionConfigurer<States, Events> withExternal = builder.configureTransitions()
.withExternal();
if (attributes != null) {
withExternal.secured(attributes, match);
}
if (expression != null) {
withExternal.secured(expression);
}
withExternal.source(States.S0);
withExternal.target(States.S1);
withExternal.event(Events.A);
return builder.build();
}
}