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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.ike.ikev2;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import com.android.ike.ikev2.exceptions.InvalidSyntaxException;
import com.android.ike.ikev2.message.TestUtils;
import libcore.net.InetAddressUtils;
import org.junit.Test;
import java.net.Inet4Address;
public final class IkeTrafficSelectorTest {
private static final String TS_IPV4_ONE_HEX_STRING = "070000100010fff0c0000264c0000365";
private static final int TS_ONE_START_PORT = 16;
private static final int TS_ONE_END_PORT = 65520;
private static final Inet4Address TS_ONE_START_ADDRESS =
(Inet4Address) (InetAddressUtils.parseNumericAddress("192.0.2.100"));
private static final Inet4Address TS_ONE_END_ADDRESS =
(Inet4Address) (InetAddressUtils.parseNumericAddress("192.0.3.101"));
private static final String TS_IPV4_TWO_HEX_STRING = "070000100000ffffc0000464c0000466";
private static final int TS_TWO_START_PORT = 0;
private static final int TS_TWO_END_PORT = 65535;
private static final Inet4Address TS_TWO_START_ADDRESS =
(Inet4Address) (InetAddressUtils.parseNumericAddress("192.0.4.100"));
private static final Inet4Address TS_TWO_END_ADDRESS =
(Inet4Address) (InetAddressUtils.parseNumericAddress("192.0.4.102"));
private static final String TX_IPV4_INVALID_PORT_RANGE_HEX_STRING =
"0700001022221111c0000464c0000466";
private static final String TX_IPV4_INVALID_ADDRESS_RANGE_HEX_STRING =
"070000100000ffffc0000466c0000366";
private static final int TS_TYPE_OFFSET = 0;
private static final int PROTOCOL_ID_OFFSET = 1;
private static final int TS_LENGTH_OFFSET = 2;
@Test
public void testDecodeIkeTrafficSelectors() throws Exception {
int numTs = 2;
byte[] tsBytes =
TestUtils.hexStringToByteArray(TS_IPV4_ONE_HEX_STRING + TS_IPV4_TWO_HEX_STRING);
IkeTrafficSelector[] selectors =
IkeTrafficSelector.decodeIkeTrafficSelectors(numTs, tsBytes);
assertEquals(numTs, selectors.length);
// Verify first traffic selector
IkeTrafficSelector tsOne = selectors[0];
assertEquals(IkeTrafficSelector.TRAFFIC_SELECTOR_TYPE_IPV4_ADDR_RANGE, tsOne.tsType);
assertEquals(IkeTrafficSelector.IP_PROTOCOL_ID_UNSPEC, tsOne.ipProtocolId);
assertEquals(IkeTrafficSelector.TRAFFIC_SELECTOR_IPV4_LEN, tsOne.selectorLength);
assertEquals(TS_ONE_START_PORT, tsOne.startPort);
assertEquals(TS_ONE_END_PORT, tsOne.endPort);
assertEquals(TS_ONE_START_ADDRESS, tsOne.startingAddress);
assertEquals(TS_ONE_END_ADDRESS, tsOne.endingAddress);
// Verify second traffic selector
IkeTrafficSelector tsTwo = selectors[1];
assertEquals(IkeTrafficSelector.TRAFFIC_SELECTOR_TYPE_IPV4_ADDR_RANGE, tsTwo.tsType);
assertEquals(IkeTrafficSelector.IP_PROTOCOL_ID_UNSPEC, tsTwo.ipProtocolId);
assertEquals(IkeTrafficSelector.TRAFFIC_SELECTOR_IPV4_LEN, tsTwo.selectorLength);
assertEquals(TS_TWO_START_PORT, tsTwo.startPort);
assertEquals(TS_TWO_END_PORT, tsTwo.endPort);
assertEquals(TS_TWO_START_ADDRESS, tsTwo.startingAddress);
assertEquals(TS_TWO_END_ADDRESS, tsTwo.endingAddress);
}
@Test
public void testDecodeIkeTrafficSelectorWithInvalidTsType() throws Exception {
int numTs = 1;
byte[] tsBytes = TestUtils.hexStringToByteArray(TS_IPV4_ONE_HEX_STRING);
tsBytes[TS_TYPE_OFFSET] = -1;
try {
IkeTrafficSelector.decodeIkeTrafficSelectors(numTs, tsBytes);
fail("Expected to fail due to invalid Traffic Selector Type.");
} catch (InvalidSyntaxException expected) {
}
}
@Test
public void testDecodeIkeTrafficSelectorWithInvalidIpProtocol() throws Exception {
int numTs = 1;
byte[] tsBytes = TestUtils.hexStringToByteArray(TS_IPV4_ONE_HEX_STRING);
tsBytes[PROTOCOL_ID_OFFSET] = -1;
try {
IkeTrafficSelector.decodeIkeTrafficSelectors(numTs, tsBytes);
fail("Expected to fail due to invalid IP Protocol ID.");
} catch (InvalidSyntaxException expected) {
}
}
@Test
public void testDecodeIkeTrafficSelectorWithExpectedTrailing() throws Exception {
int numTs = 1;
byte[] tsBytes = TestUtils.hexStringToByteArray(TS_IPV4_ONE_HEX_STRING + "FFFF");
try {
IkeTrafficSelector.decodeIkeTrafficSelectors(numTs, tsBytes);
fail("Expected to fail due to unexpected trailing characters.");
} catch (InvalidSyntaxException expected) {
}
}
@Test
public void testDecodeIkeTrafficSelectorWithInvalidTsLength() throws Exception {
int numTs = 1;
byte[] tsBytes = TestUtils.hexStringToByteArray(TS_IPV4_ONE_HEX_STRING);
// Traffic Selector field is two octets
tsBytes[TS_LENGTH_OFFSET] = 0;
tsBytes[TS_LENGTH_OFFSET + 1] = 0;
try {
IkeTrafficSelector.decodeIkeTrafficSelectors(numTs, tsBytes);
fail("Expected to fail due to invalid Traffic Selector length.");
} catch (InvalidSyntaxException expected) {
}
}
@Test
public void testDecodeIkeTrafficSelectorWithInvalidPortRange() throws Exception {
int numTs = 1;
byte[] tsBytes = TestUtils.hexStringToByteArray(TX_IPV4_INVALID_PORT_RANGE_HEX_STRING);
try {
IkeTrafficSelector.decodeIkeTrafficSelectors(numTs, tsBytes);
fail("Expected to fail when start port is larger than end port.");
} catch (InvalidSyntaxException expected) {
}
}
@Test
public void testDecodeIkeTrafficSelectorWithInvalidAddressRange() throws Exception {
int numTs = 1;
byte[] tsBytes = TestUtils.hexStringToByteArray(TX_IPV4_INVALID_ADDRESS_RANGE_HEX_STRING);
try {
IkeTrafficSelector.decodeIkeTrafficSelectors(numTs, tsBytes);
fail("Expected to fail when starting address is larger than ending address.");
} catch (InvalidSyntaxException expected) {
}
}
}
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