Yi Tseng | 60bf35a | 2017-06-02 17:05:48 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017-present Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package org.onlab.packet; |
| 18 | |
| 19 | import com.google.common.collect.ImmutableList; |
| 20 | import org.junit.Test; |
| 21 | |
| 22 | import static org.junit.Assert.assertArrayEquals; |
| 23 | import static org.junit.Assert.assertEquals; |
| 24 | |
| 25 | import java.nio.ByteBuffer; |
| 26 | |
| 27 | public class Dhcp6Test { |
| 28 | private static final int OPT_CLIENT_ID = 0xBEEFBEEF; |
| 29 | private static final byte[] OPT_CLIENT_ID_BYTE_ARR = |
| 30 | {(byte) 0xBE, (byte) 0xEF, (byte) 0xBE, (byte) 0xEF}; |
| 31 | private static final short OPT_CLIENT_ID_SIZE = 4; |
| 32 | private static final int OPT_AUTH = 0xBA11BA11; |
| 33 | private static final byte[] OPT_AUTH_BYTE_AR = |
| 34 | {(byte) 0xBA, 0x11, (byte) 0xBA, 0x11}; |
| 35 | private static final short OPT_AUTH_SIZE = 4; |
| 36 | private static final int TRANSACTION_ID = 0xC0FFEE; |
| 37 | private static final byte[] TRANSACTION_ID_BYTE_ARR = |
| 38 | {(byte) 0xC0, (byte) 0xFF, (byte) 0xEE}; |
| 39 | private static final byte HOP_COUNT = 3; |
| 40 | private static final Ip6Address LINK_ADDRESS = Ip6Address.valueOf("1111:2222::8888"); |
| 41 | private static final Ip6Address PEER_ADDRESS = Ip6Address.valueOf("3333:4444::9999"); |
| 42 | Deserializer<DHCP6> deserializer = DHCP6.deserializer(); |
| 43 | private byte[] byteHeader; |
| 44 | |
| 45 | @Test |
| 46 | public void testDeserializeBadInput() throws Exception { |
| 47 | PacketTestUtils.testDeserializeBadInput(deserializer); |
| 48 | } |
| 49 | |
| 50 | /** |
| 51 | * Truncated a simple DHCPv6 payload. |
| 52 | */ |
| 53 | @Test |
| 54 | public void testDeserializeTruncated() throws Exception { |
| 55 | ByteBuffer bb = ByteBuffer.allocate(4); |
| 56 | bb.put(DHCP6.MsgType.REQUEST.value()); |
| 57 | bb.put(TRANSACTION_ID_BYTE_ARR); |
| 58 | byteHeader = bb.array(); |
| 59 | |
| 60 | PacketTestUtils.testDeserializeTruncated(deserializer, byteHeader); |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Basic DHCPv6 header with one msg type and one transaction id. |
| 65 | */ |
| 66 | @Test |
| 67 | public void testDeserializeDefaultPayload() throws Exception { |
| 68 | ByteBuffer bb = ByteBuffer.allocate(12); |
| 69 | bb.put(DHCP6.MsgType.REQUEST.value()); |
| 70 | bb.put(TRANSACTION_ID_BYTE_ARR); |
| 71 | |
| 72 | // put a simple client id (4 bytes) |
| 73 | bb.putShort(DHCP6.OptionCode.CLIENTID.value()); |
| 74 | bb.putShort(OPT_CLIENT_ID_SIZE); |
| 75 | bb.putInt(OPT_CLIENT_ID); |
| 76 | byteHeader = bb.array(); |
| 77 | |
| 78 | DHCP6 dhcp6 = deserializer.deserialize(byteHeader, 0, byteHeader.length); |
| 79 | assertEquals(dhcp6.getMsgType(), DHCP6.MsgType.REQUEST.value()); |
| 80 | assertEquals(dhcp6.getTransactionId(), TRANSACTION_ID); |
| 81 | assertEquals(dhcp6.getOptions().size(), 1); |
| 82 | |
| 83 | DHCP6Option clientIdOption = dhcp6.getOptions().get(0); |
| 84 | assertEquals(clientIdOption.getCode(), DHCP6.OptionCode.CLIENTID.value()); |
| 85 | assertArrayEquals(clientIdOption.getData(), OPT_CLIENT_ID_BYTE_ARR); |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * DHCPv6 header with relay agent information. |
| 90 | */ |
| 91 | @Test |
| 92 | public void testDeserializeRelayAgent() throws Exception { |
| 93 | ByteBuffer bb = ByteBuffer.allocate(42); |
| 94 | bb.put(DHCP6.MsgType.RELAY_FORW.value()); |
| 95 | bb.put(HOP_COUNT); |
| 96 | |
| 97 | bb.put(LINK_ADDRESS.toOctets()); |
| 98 | bb.put(PEER_ADDRESS.toOctets()); |
| 99 | |
| 100 | // put a simple client id (4 bytes) |
| 101 | bb.putShort(DHCP6.OptionCode.CLIENTID.value()); |
| 102 | bb.putShort(OPT_CLIENT_ID_SIZE); |
| 103 | bb.putInt(OPT_CLIENT_ID); |
| 104 | byteHeader = bb.array(); |
| 105 | |
| 106 | DHCP6 dhcp6 = deserializer.deserialize(byteHeader, 0, byteHeader.length); |
| 107 | assertEquals(dhcp6.getMsgType(), DHCP6.MsgType.RELAY_FORW.value()); |
| 108 | assertEquals(dhcp6.getHopCount(), HOP_COUNT); |
| 109 | assertArrayEquals(dhcp6.getLinkAddress(), LINK_ADDRESS.toOctets()); |
| 110 | assertArrayEquals(dhcp6.getPeerAddress(), PEER_ADDRESS.toOctets()); |
| 111 | assertEquals(dhcp6.getOptions().size(), 1); |
| 112 | |
| 113 | DHCP6Option clientIdOption = dhcp6.getOptions().get(0); |
| 114 | assertEquals(clientIdOption.getCode(), DHCP6.OptionCode.CLIENTID.value()); |
| 115 | assertArrayEquals(clientIdOption.getData(), OPT_CLIENT_ID_BYTE_ARR); |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * Serialize DHCPv6 header with default payload and options. |
| 120 | */ |
| 121 | @Test |
| 122 | public void testSerializeDefaultPayload() throws Exception { |
| 123 | DHCP6 dhcp6 = new DHCP6(); |
| 124 | dhcp6.setMsgType(DHCP6.MsgType.REQUEST.value()); |
| 125 | dhcp6.setTransactionId(TRANSACTION_ID); |
| 126 | |
| 127 | DHCP6Option opt1 = new DHCP6Option(); |
| 128 | opt1.setCode(DHCP6.OptionCode.CLIENTID.value()); |
| 129 | opt1.setLength(OPT_CLIENT_ID_SIZE); |
| 130 | opt1.setData(OPT_CLIENT_ID_BYTE_ARR); |
| 131 | |
| 132 | |
| 133 | DHCP6Option opt2 = new DHCP6Option(); |
| 134 | opt2.setCode(DHCP6.OptionCode.AUTH.value()); |
| 135 | opt2.setLength(OPT_AUTH_SIZE); |
| 136 | opt2.setData(OPT_AUTH_BYTE_AR); |
| 137 | |
| 138 | dhcp6.setOptions(ImmutableList.of(opt1, opt2)); |
| 139 | |
| 140 | byte[] serialized = dhcp6.serialize(); |
| 141 | ByteBuffer expected = ByteBuffer.allocate(20) |
| 142 | .put(DHCP6.MsgType.REQUEST.value()) |
| 143 | .put(TRANSACTION_ID_BYTE_ARR) |
| 144 | .putShort(DHCP6.OptionCode.CLIENTID.value()) |
| 145 | .putShort(OPT_CLIENT_ID_SIZE) |
| 146 | .putInt(OPT_CLIENT_ID) |
| 147 | .putShort(DHCP6.OptionCode.AUTH.value()) |
| 148 | .putShort(OPT_AUTH_SIZE) |
| 149 | .putInt(OPT_AUTH); |
| 150 | |
| 151 | assertArrayEquals(serialized, expected.array()); |
| 152 | } |
| 153 | |
| 154 | /** |
| 155 | * Serialize DHCPv6 header with relay agent payload and options. |
| 156 | */ |
| 157 | @Test |
| 158 | public void testSerializeRelayAgent() throws Exception { |
| 159 | DHCP6 dhcp6 = new DHCP6(); |
| 160 | dhcp6.setMsgType(DHCP6.MsgType.RELAY_FORW.value()); |
| 161 | dhcp6.setHopCount(HOP_COUNT); |
| 162 | dhcp6.setLinkAddress(LINK_ADDRESS.toOctets()); |
| 163 | dhcp6.setPeerAddress(PEER_ADDRESS.toOctets()); |
| 164 | |
| 165 | DHCP6Option opt1 = new DHCP6Option(); |
| 166 | opt1.setCode(DHCP6.OptionCode.CLIENTID.value()); |
| 167 | opt1.setLength(OPT_CLIENT_ID_SIZE); |
| 168 | opt1.setData(OPT_CLIENT_ID_BYTE_ARR); |
| 169 | |
| 170 | |
| 171 | DHCP6Option opt2 = new DHCP6Option(); |
| 172 | opt2.setCode(DHCP6.OptionCode.AUTH.value()); |
| 173 | opt2.setLength(OPT_AUTH_SIZE); |
| 174 | opt2.setData(OPT_AUTH_BYTE_AR); |
| 175 | |
| 176 | dhcp6.setOptions(ImmutableList.of(opt1, opt2)); |
| 177 | |
| 178 | byte[] serialized = dhcp6.serialize(); |
| 179 | ByteBuffer expected = ByteBuffer.allocate(50) |
| 180 | .put(DHCP6.MsgType.RELAY_FORW.value()) |
| 181 | .put(HOP_COUNT) |
| 182 | .put(LINK_ADDRESS.toOctets()) |
| 183 | .put(PEER_ADDRESS.toOctets()) |
| 184 | .putShort(DHCP6.OptionCode.CLIENTID.value()) |
| 185 | .putShort(OPT_CLIENT_ID_SIZE) |
| 186 | .putInt(OPT_CLIENT_ID) |
| 187 | .putShort(DHCP6.OptionCode.AUTH.value()) |
| 188 | .putShort(OPT_AUTH_SIZE) |
| 189 | .putInt(OPT_AUTH); |
| 190 | |
| 191 | assertArrayEquals(serialized, expected.array()); |
| 192 | } |
| 193 | } |