import java.net.UnknownHostException;
import java.util.Arrays;
-import junit.framework.Assert;
-
+import org.junit.Assert;
import org.junit.Test;
+
import org.opendaylight.controller.sal.match.Match;
import org.opendaylight.controller.sal.match.MatchType;
import org.opendaylight.controller.sal.utils.EtherTypes;
Assert.assertEquals(protocol, (byte) match.getField(MatchType.NW_PROTO).getValue());
Assert.assertEquals(tos, (byte) match.getField(MatchType.NW_TOS).getValue());
}
+
+ @Test
+ public void testFragment() throws Exception {
+ byte[] payload1 = new byte[0];
+ byte[] payload2 = {
+ (byte)0x61, (byte)0xd1, (byte)0x3d, (byte)0x51,
+ (byte)0x1b, (byte)0x75, (byte)0xa7, (byte)0x83,
+ };
+ byte[] payload3 = {
+ (byte)0xe7, (byte)0x0f, (byte)0x2d, (byte)0x7e,
+ (byte)0x15, (byte)0xba, (byte)0xe7, (byte)0x6d,
+ (byte)0xb5, (byte)0xc5, (byte)0xb5, (byte)0x37,
+ (byte)0x59, (byte)0xbc, (byte)0x91, (byte)0x43,
+ (byte)0xb5, (byte)0xb7, (byte)0xe4, (byte)0x28,
+ (byte)0xec, (byte)0x62, (byte)0x6b, (byte)0x6a,
+ (byte)0xd1, (byte)0xcb, (byte)0x79, (byte)0x1e,
+ (byte)0xfc, (byte)0x82, (byte)0xf5, (byte)0xb4,
+ };
+
+ // Ensure that the payload is not deserialized if the fragment offset
+ // is not zero.
+ byte proto = IPProtocols.TCP.byteValue();
+ fragmentTest(payload1, proto, (short)0xf250);
+ fragmentTest(payload2, proto, (short)0xf248);
+ fragmentTest(payload3, proto, (short)0xf230);
+
+ proto = IPProtocols.UDP.byteValue();
+ fragmentTest(payload1, proto, (short)0xf245);
+ fragmentTest(payload2, proto, (short)0xf23d);
+ fragmentTest(payload3, proto, (short)0xf225);
+
+ proto = IPProtocols.ICMP.byteValue();
+ fragmentTest(payload1, proto, (short)0xf255);
+ fragmentTest(payload2, proto, (short)0xf24d);
+ fragmentTest(payload3, proto, (short)0xf235);
+
+ // Ensure that the protocol header in the first fragment is
+ // deserialized.
+ proto = IPProtocols.TCP.byteValue();
+ TCP tcp = new TCP();
+ tcp.setSourcePort((short)1234).setDestinationPort((short)32000).
+ setSequenceNumber((int)0xd541f5f8).setAckNumber((int)0x58da787d).
+ setDataOffset((byte)5).setReserved((byte)0).
+ setHeaderLenFlags((short)0x18).setWindowSize((short)0x40e8).
+ setUrgentPointer((short)0x15f7).setChecksum((short)0x0d4e);
+ firstFragmentTest(tcp, payload1, proto, (short)0xdfe6);
+ tcp.setChecksum((short)0xab2a);
+ firstFragmentTest(tcp, payload2, proto, (short)0xdfde);
+ tcp.setChecksum((short)0x1c75);
+ firstFragmentTest(tcp, payload3, proto, (short)0xdfc6);
+
+ proto = IPProtocols.UDP.byteValue();
+ UDP udp = new UDP();
+ udp.setSourcePort((short)53).setDestinationPort((short)45383).
+ setLength((short)(payload1.length + 8)).setChecksum((short)0);
+ firstFragmentTest(udp, payload1, proto, (short)0xdfe7);
+ udp.setLength((short)(payload2.length + 8));
+ firstFragmentTest(udp, payload2, proto, (short)0xdfdf);
+ udp.setLength((short)(payload3.length + 8));
+ firstFragmentTest(udp, payload3, proto, (short)0xdfc7);
+
+ proto = IPProtocols.ICMP.byteValue();
+ ICMP icmp = new ICMP();
+ icmp.setType((byte)8).setCode((byte)0).setIdentifier((short)0x3d1e).
+ setSequenceNumber((short)1);
+ firstFragmentTest(icmp, payload1, proto, (short)0xdff7);
+ firstFragmentTest(icmp, payload2, proto, (short)0xdfef);
+ firstFragmentTest(icmp, payload3, proto, (short)0xdfd7);
+ }
+
+ private void fragmentTest(byte[] payload, byte proto, short checksum)
+ throws Exception {
+ // Construct a fragmented raw IPv4 packet.
+ int ipv4Len = 20;
+ byte[] rawIp = new byte[ipv4Len + payload.length];
+
+ byte ipVersion = 4;
+ byte dscp = 35;
+ byte ecn = 2;
+ byte tos = (byte)((dscp << 2) | ecn);
+ short totalLen = (short)rawIp.length;
+ short id = 22143;
+ short offset = 0xb9;
+ byte ttl = 64;
+ byte[] srcIp = {(byte)0x0a, (byte)0x00, (byte)0x00, (byte)0x01};
+ byte[] dstIp = {(byte)0xc0, (byte)0xa9, (byte)0x66, (byte)0x23};
+
+ rawIp[0] = (byte)((ipVersion << 4) | (ipv4Len >> 2));
+ rawIp[1] = tos;
+ rawIp[2] = (byte)(totalLen >>> Byte.SIZE);
+ rawIp[3] = (byte)totalLen;
+ rawIp[4] = (byte)(id >>> Byte.SIZE);
+ rawIp[5] = (byte)id;
+ rawIp[6] = (byte)(offset >>> Byte.SIZE);
+ rawIp[7] = (byte)offset;
+ rawIp[8] = ttl;
+ rawIp[9] = proto;
+ rawIp[10] = (byte)(checksum >>> Byte.SIZE);
+ rawIp[11] = (byte)checksum;
+ System.arraycopy(srcIp, 0, rawIp, 12, srcIp.length);
+ System.arraycopy(dstIp, 0, rawIp, 16, srcIp.length);
+ System.arraycopy(payload, 0, rawIp, ipv4Len, payload.length);
+
+ // Deserialize.
+ IPv4 ipv4 = new IPv4();
+ ipv4.deserialize(rawIp, 0, rawIp.length * Byte.SIZE);
+
+ Assert.assertEquals(ipVersion, ipv4.getVersion());
+ Assert.assertEquals(ipv4Len, ipv4.getHeaderLen());
+ Assert.assertEquals(dscp, ipv4.getDiffServ());
+ Assert.assertEquals(ecn, ipv4.getECN());
+ Assert.assertEquals(totalLen, ipv4.getTotalLength());
+ Assert.assertEquals(id, ipv4.getIdentification());
+ Assert.assertEquals((byte)0, ipv4.getFlags());
+ Assert.assertEquals(offset, ipv4.getFragmentOffset());
+ Assert.assertEquals(ttl, ipv4.getTtl());
+ Assert.assertEquals(proto, ipv4.getProtocol());
+ Assert.assertEquals(checksum, ipv4.getChecksum());
+ Assert.assertEquals(NetUtils.byteArray4ToInt(srcIp),
+ ipv4.getSourceAddress());
+ Assert.assertEquals(NetUtils.byteArray4ToInt(dstIp),
+ ipv4.getDestinationAddress());
+ Assert.assertFalse(ipv4.isCorrupted());
+
+ // payloadClass should not be set if fragment offset is not zero.
+ Assert.assertEquals(null, ipv4.getPayload());
+ Assert.assertArrayEquals(payload, ipv4.getRawPayload());
+ }
+
+ private void firstFragmentTest(Packet payload, byte[] rawPayload,
+ byte proto, short checksum)
+ throws Exception {
+ // Construct a raw IPv4 packet with MF flag.
+ int ipv4Len = 20;
+ payload.setRawPayload(rawPayload);
+ byte[] payloadBytes = payload.serialize();
+ byte[] rawIp = new byte[ipv4Len + payloadBytes.length];
+
+ byte ipVersion = 4;
+ byte dscp = 13;
+ byte ecn = 1;
+ byte tos = (byte)((dscp << 2) | ecn);
+ short totalLen = (short)rawIp.length;
+ short id = 19834;
+ byte flags = 0x1;
+ short offset = 0;
+ short off = (short)(((short)flags << 13) | offset);
+ byte ttl = 64;
+ byte[] srcIp = {(byte)0xac, (byte)0x23, (byte)0x5b, (byte)0xfd};
+ byte[] dstIp = {(byte)0xc0, (byte)0xa8, (byte)0x64, (byte)0x71};
+
+ rawIp[0] = (byte)((ipVersion << 4) | (ipv4Len >> 2));
+ rawIp[1] = tos;
+ rawIp[2] = (byte)(totalLen >>> Byte.SIZE);
+ rawIp[3] = (byte)totalLen;
+ rawIp[4] = (byte)(id >>> Byte.SIZE);
+ rawIp[5] = (byte)id;
+ rawIp[6] = (byte)(off >>> Byte.SIZE);
+ rawIp[7] = (byte)off;
+ rawIp[8] = ttl;
+ rawIp[9] = proto;
+ rawIp[10] = (byte)(checksum >>> Byte.SIZE);
+ rawIp[11] = (byte)checksum;
+ System.arraycopy(srcIp, 0, rawIp, 12, srcIp.length);
+ System.arraycopy(dstIp, 0, rawIp, 16, srcIp.length);
+ System.arraycopy(payloadBytes, 0, rawIp, ipv4Len, payloadBytes.length);
+
+ // Deserialize.
+ IPv4 ipv4 = new IPv4();
+ ipv4.deserialize(rawIp, 0, rawIp.length * Byte.SIZE);
+
+ Assert.assertEquals(ipVersion, ipv4.getVersion());
+ Assert.assertEquals(ipv4Len, ipv4.getHeaderLen());
+ Assert.assertEquals(dscp, ipv4.getDiffServ());
+ Assert.assertEquals(ecn, ipv4.getECN());
+ Assert.assertEquals(totalLen, ipv4.getTotalLength());
+ Assert.assertEquals(id, ipv4.getIdentification());
+ Assert.assertEquals(flags, ipv4.getFlags());
+ Assert.assertEquals(offset, ipv4.getFragmentOffset());
+ Assert.assertEquals(ttl, ipv4.getTtl());
+ Assert.assertEquals(proto, ipv4.getProtocol());
+ Assert.assertEquals(checksum, ipv4.getChecksum());
+ Assert.assertEquals(NetUtils.byteArray4ToInt(srcIp),
+ ipv4.getSourceAddress());
+ Assert.assertEquals(NetUtils.byteArray4ToInt(dstIp),
+ ipv4.getDestinationAddress());
+ Assert.assertFalse(ipv4.isCorrupted());
+
+ // Protocol header in the first fragment should be deserialized.
+ Assert.assertEquals(null, ipv4.getRawPayload());
+
+ Packet desPayload = ipv4.getPayload();
+ Assert.assertEquals(payload, desPayload);
+ Assert.assertFalse(desPayload.isCorrupted());
+ Assert.assertArrayEquals(rawPayload, desPayload.getRawPayload());
+ }
}
Code Review / controller.git / blobdiff