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/*
* Copyright (C) 2019 The Android Open Source Project
*
* 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 com.android.internal.net.eap.statemachine;
import static com.android.internal.net.eap.message.EapData.EAP_TYPE_MSCHAP_V2;
import static com.android.internal.net.eap.message.EapMessage.EAP_CODE_REQUEST;
import static com.android.internal.net.eap.message.EapTestMessageDefinitions.EAP_MSCHAP_V2_CHALLENGE_RESPONSE;
import static com.android.internal.net.eap.message.EapTestMessageDefinitions.ID_INT;
import static com.android.internal.net.eap.message.EapTestMessageDefinitions.MSCHAP_V2_AUTHENTICATOR_CHALLENGE;
import static com.android.internal.net.eap.message.EapTestMessageDefinitions.MSCHAP_V2_ID_INT;
import static com.android.internal.net.eap.message.EapTestMessageDefinitions.MSCHAP_V2_PEER_CHALLENGE;
import static com.android.internal.net.eap.message.mschapv2.EapMsChapV2PacketDefinitions.SERVER_NAME_BYTES;
import static com.android.internal.net.eap.message.mschapv2.EapMsChapV2TypeData.EapMsChapV2ChallengeRequest.TYPE_DATA_HEADER_SIZE;
import static com.android.internal.net.eap.message.mschapv2.EapMsChapV2TypeData.EapMsChapV2ChallengeRequest.VALUE_SIZE;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.Mockito.doAnswer;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import com.android.internal.net.eap.EapResult;
import com.android.internal.net.eap.EapResult.EapError;
import com.android.internal.net.eap.EapResult.EapResponse;
import com.android.internal.net.eap.exceptions.mschapv2.EapMsChapV2ParsingException;
import com.android.internal.net.eap.message.EapData;
import com.android.internal.net.eap.message.EapMessage;
import com.android.internal.net.eap.message.mschapv2.EapMsChapV2TypeData.EapMsChapV2ChallengeRequest;
import com.android.internal.net.eap.message.mschapv2.EapMsChapV2TypeData.EapMsChapV2TypeDataDecoder.DecodeResult;
import com.android.internal.net.eap.statemachine.EapMsChapV2MethodStateMachine.ValidateAuthenticatorState;
import org.junit.Before;
import org.junit.Test;
public class EapMsChapV2ChallengeStateTest extends EapMsChapV2StateTest {
@Before
@Override
public void setUp() {
super.setUp();
mStateMachine.transitionTo(mStateMachine.new ChallengeState());
}
@Test
public void testProcessChallenge() throws Exception {
EapData eapData = new EapData(EAP_TYPE_MSCHAP_V2, DUMMY_TYPE_DATA);
EapMessage eapMessage = new EapMessage(EAP_CODE_REQUEST, ID_INT, eapData);
EapMsChapV2ChallengeRequest challengeRequest =
new EapMsChapV2ChallengeRequest(
MSCHAP_V2_ID_INT,
TYPE_DATA_HEADER_SIZE + VALUE_SIZE + SERVER_NAME_BYTES.length,
MSCHAP_V2_AUTHENTICATOR_CHALLENGE,
SERVER_NAME_BYTES);
when(mMockTypeDataDecoder.decodeChallengeRequest(any(String.class), eq(DUMMY_TYPE_DATA)))
.thenReturn(new DecodeResult<>(challengeRequest));
doAnswer(invocation -> {
byte[] dst = invocation.getArgument(0);
System.arraycopy(MSCHAP_V2_PEER_CHALLENGE, 0, dst, 0, MSCHAP_V2_PEER_CHALLENGE.length);
return null;
}).when(mMockSecureRandom).nextBytes(eq(new byte[MSCHAP_V2_PEER_CHALLENGE.length]));
EapResult result = mStateMachine.process(eapMessage);
EapResponse eapResponse = (EapResponse) result;
assertArrayEquals(EAP_MSCHAP_V2_CHALLENGE_RESPONSE, eapResponse.packet);
assertTrue(mStateMachine.getState() instanceof ValidateAuthenticatorState);
verify(mMockSecureRandom).nextBytes(any(byte[].class));
verify(mMockTypeDataDecoder).decodeChallengeRequest(any(String.class), eq(DUMMY_TYPE_DATA));
}
@Test
public void testIncorrectTypeData() throws Exception {
EapData eapData = new EapData(EAP_TYPE_MSCHAP_V2, DUMMY_TYPE_DATA);
EapMessage eapMessage = new EapMessage(EAP_CODE_REQUEST, ID_INT, eapData);
when(mMockTypeDataDecoder.decodeChallengeRequest(any(String.class), eq(DUMMY_TYPE_DATA)))
.thenReturn(
new DecodeResult<>(
new EapError(
new EapMsChapV2ParsingException("incorrect type data"))));
EapResult result = mStateMachine.process(eapMessage);
EapError eapError = (EapError) result;
assertTrue(eapError.cause instanceof EapMsChapV2ParsingException);
verify(mMockTypeDataDecoder).decodeChallengeRequest(any(String.class), eq(DUMMY_TYPE_DATA));
}
}
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