package org.pcap4j.packet;
import static org.junit.Assert.*;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.UnknownHostException;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.pcap4j.packet.IcmpV6PacketTooBigPacket.IcmpV6PacketTooBigHeader;
import org.pcap4j.packet.namednumber.EtherType;
import org.pcap4j.packet.namednumber.IcmpV6Code;
import org.pcap4j.packet.namednumber.IcmpV6Type;
import org.pcap4j.packet.namednumber.IpNumber;
import org.pcap4j.packet.namednumber.IpVersion;
import org.pcap4j.util.MacAddress;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@SuppressWarnings("javadoc")
public class IcmpV6PacketTooBigPacketTest extends AbstractPacketTest {
private static final Logger logger
= LoggerFactory.getLogger(IcmpV6PacketTooBigPacketTest.class);
private final IcmpV6PacketTooBigPacket packet;
private final int mtu;
public IcmpV6PacketTooBigPacketTest() {
this.mtu = 12345;
IcmpV6EchoRequestPacket.Builder echob = new IcmpV6EchoRequestPacket.Builder();
echob.identifier((short)100)
.sequenceNumber((short)10)
.payloadBuilder(
new UnknownPacket.Builder()
.rawData((new byte[] { (byte)0, (byte)1, (byte)2 }))
);
Inet6Address srcAddr;
Inet6Address dstAddr;
try {
srcAddr = (Inet6Address)InetAddress.getByName("2001:db8::3:2:1");
dstAddr = (Inet6Address)InetAddress.getByName("2001:db8::3:2:2");
} catch (UnknownHostException e) {
throw new AssertionError(e);
}
IcmpV6CommonPacket.Builder icmpV6b = new IcmpV6CommonPacket.Builder();
icmpV6b.type(IcmpV6Type.ECHO_REQUEST)
.code(IcmpV6Code.NO_CODE)
.srcAddr(srcAddr)
.dstAddr(dstAddr)
.payloadBuilder(echob)
.correctChecksumAtBuild(true);
IpV6Packet.Builder ipv6b = new IpV6Packet.Builder();
ipv6b.version(IpVersion.IPV6)
.trafficClass(IpV6SimpleTrafficClass.newInstance((byte)0x12))
.flowLabel(IpV6SimpleFlowLabel.newInstance(0x12345))
.nextHeader(IpNumber.ICMPV6)
.hopLimit((byte)100)
.srcAddr(srcAddr)
.dstAddr(dstAddr)
.correctLengthAtBuild(true)
.payloadBuilder(icmpV6b);
IcmpV6PacketTooBigPacket.Builder b
= new IcmpV6PacketTooBigPacket.Builder();
b.mtu(mtu)
.payload(ipv6b.build());
this.packet = b.build();
}
@Override
protected Packet getPacket() {
return packet;
}
@Override
protected Packet getWholePacket() {
Inet6Address srcAddr;
Inet6Address dstAddr;
try {
srcAddr = (Inet6Address)InetAddress.getByName("2001:db8::3:2:2");
dstAddr = (Inet6Address)InetAddress.getByName("2001:db8::3:2:1");
} catch (UnknownHostException e) {
throw new AssertionError();
}
IcmpV6CommonPacket.Builder icmpV6b = new IcmpV6CommonPacket.Builder();
icmpV6b.type(IcmpV6Type.PACKET_TOO_BIG)
.code(IcmpV6Code.NO_CODE)
.srcAddr(srcAddr)
.dstAddr(dstAddr)
.payloadBuilder(new SimpleBuilder(packet))
.correctChecksumAtBuild(true);
IpV6Packet.Builder ipv6b = new IpV6Packet.Builder();
ipv6b.version(IpVersion.IPV6)
.trafficClass(IpV6SimpleTrafficClass.newInstance((byte)0x12))
.flowLabel(IpV6SimpleFlowLabel.newInstance(0x12345))
.nextHeader(IpNumber.ICMPV6)
.hopLimit((byte)100)
.srcAddr(srcAddr)
.dstAddr(dstAddr)
.correctLengthAtBuild(true)
.payloadBuilder(icmpV6b);
EthernetPacket.Builder eb = new EthernetPacket.Builder();
eb.dstAddr(MacAddress.getByName("fe:00:00:00:00:02"))
.srcAddr(MacAddress.getByName("fe:00:00:00:00:01"))
.type(EtherType.IPV6)
.payloadBuilder(ipv6b)
.paddingAtBuild(true);
return eb.build();
}
@BeforeClass
public static void setUpBeforeClass() throws Exception {
logger.info(
"########## " + IcmpV6PacketTooBigPacketTest.class.getSimpleName() + " START ##########"
);
}
@AfterClass
public static void tearDownAfterClass() throws Exception {
}
@Test
public void testNewPacket() {
IcmpV6PacketTooBigPacket p;
try {
p = IcmpV6PacketTooBigPacket.newPacket(packet.getRawData(), 0, packet.getRawData().length);
} catch (IllegalRawDataException e) {
throw new AssertionError(e);
}
assertEquals(packet, p);
assertTrue(p.getPayload().contains(IpV6Packet.class));
assertTrue(p.getPayload().contains(IcmpV6CommonPacket.class));
assertTrue(p.getPayload().contains(IcmpV6EchoRequestPacket.class));
assertTrue(p.getPayload().contains(UnknownPacket.class));
assertEquals(p.getPayload().get(UnknownPacket.class).length(), 3);
assertFalse(p.getPayload().contains(IllegalPacket.class));
}
@Test
public void testGetHeader() {
IcmpV6PacketTooBigHeader h = packet.getHeader();
assertEquals(mtu, h.getMtu());
IcmpV6PacketTooBigPacket.Builder b = packet.getBuilder();
IcmpV6PacketTooBigPacket p;
b.mtu(0);
p = b.build();
assertEquals(0, (int)p.getHeader().getMtuAsLong());
b.mtu(2147483647);
p = b.build();
assertEquals(2147483647, (int)p.getHeader().getMtuAsLong());
b.mtu(-1);
p = b.build();
assertEquals(-1, (int)p.getHeader().getMtuAsLong());
b.mtu(-2147483648);
p = b.build();
assertEquals(-2147483648, (int)p.getHeader().getMtuAsLong());
}
}