package org.pcap4j.packet;
import static org.junit.Assert.*;
import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.UnknownHostException;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.pcap4j.packet.IcmpV4RedirectPacket.IcmpV4RedirectHeader;
import org.pcap4j.packet.namednumber.EtherType;
import org.pcap4j.packet.namednumber.IcmpV4Code;
import org.pcap4j.packet.namednumber.IcmpV4Type;
import org.pcap4j.packet.namednumber.IpNumber;
import org.pcap4j.packet.namednumber.IpVersion;
import org.pcap4j.util.IcmpV4Helper;
import org.pcap4j.util.MacAddress;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@SuppressWarnings("javadoc")
public class IcmpV4RedirectPacketTest extends AbstractPacketTest {
private static final Logger logger
= LoggerFactory.getLogger(IcmpV4RedirectPacketTest.class);
private final IcmpV4RedirectPacket packet;
private final Inet4Address gatewayInternetAddress;
public IcmpV4RedirectPacketTest() {
try {
this.gatewayInternetAddress
= (Inet4Address)InetAddress.getByAddress(
new byte[] { (byte)192, (byte)0, (byte)2, (byte)254 }
);
} catch (UnknownHostException e) {
throw new AssertionError();
}
IcmpV4EchoPacket.Builder echob = new IcmpV4EchoPacket.Builder();
echob.identifier((short)100)
.sequenceNumber((short)10)
.payloadBuilder(
new UnknownPacket.Builder()
.rawData((new byte[] { (byte)0, (byte)1, (byte)2 }))
);
IcmpV4CommonPacket.Builder icmpV4b = new IcmpV4CommonPacket.Builder();
icmpV4b.type(IcmpV4Type.ECHO)
.code(IcmpV4Code.NO_CODE)
.payloadBuilder(echob)
.correctChecksumAtBuild(true);
IpV4Packet.Builder ipv4b = new IpV4Packet.Builder();
try {
ipv4b.version(IpVersion.IPV4)
.tos(IpV4Rfc791Tos.newInstance((byte)0))
.identification((short)100)
.ttl((byte)100)
.protocol(IpNumber.ICMPV4)
.srcAddr(
(Inet4Address)InetAddress.getByAddress(
new byte[] { (byte)192, (byte)0, (byte)2, (byte)2 }
)
)
.dstAddr(
(Inet4Address)InetAddress.getByAddress(
new byte[] { (byte)192, (byte)0, (byte)2, (byte)1 }
)
)
.payloadBuilder(icmpV4b)
.correctChecksumAtBuild(true)
.correctLengthAtBuild(true);
} catch (UnknownHostException e) {
throw new AssertionError();
}
IcmpV4RedirectPacket.Builder b
= new IcmpV4RedirectPacket.Builder();
b.gatewayInternetAddress(gatewayInternetAddress)
.payload(
IcmpV4Helper.makePacketForInvokingPacketField(ipv4b.build())
);
this.packet = b.build();
}
@Override
protected Packet getPacket() {
return packet;
}
@Override
protected Packet getWholePacket() throws UnknownHostException {
IcmpV4CommonPacket.Builder icmpV4b = new IcmpV4CommonPacket.Builder();
icmpV4b.type(IcmpV4Type.REDIRECT)
.code(IcmpV4Code.REDIRECT_DATAGRAMS_FOR_HOST)
.payloadBuilder(new SimpleBuilder(packet))
.correctChecksumAtBuild(true);
IpV4Packet.Builder ipv4b = new IpV4Packet.Builder();
ipv4b.version(IpVersion.IPV4)
.tos(IpV4Rfc791Tos.newInstance((byte)0))
.identification((short)100)
.ttl((byte)100)
.protocol(IpNumber.ICMPV4)
.srcAddr(
(Inet4Address)InetAddress.getByAddress(
new byte[] { (byte)192, (byte)0, (byte)2, (byte)1 }
)
)
.dstAddr(
(Inet4Address)InetAddress.getByAddress(
new byte[] { (byte)192, (byte)0, (byte)2, (byte)2 }
)
)
.payloadBuilder(icmpV4b)
.correctChecksumAtBuild(true)
.correctLengthAtBuild(true);
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.IPV4)
.payloadBuilder(ipv4b)
.paddingAtBuild(true);
return eb.build();
}
@BeforeClass
public static void setUpBeforeClass() throws Exception {
logger.info(
"########## " + IcmpV4RedirectPacketTest.class.getSimpleName() + " START ##########"
);
}
@AfterClass
public static void tearDownAfterClass() throws Exception {
}
@Test
public void testNewPacket() {
IcmpV4RedirectPacket p;
try {
p = IcmpV4RedirectPacket
.newPacket(packet.getRawData(), 0, packet.getRawData().length);
} catch (IllegalRawDataException e) {
throw new AssertionError(e);
}
assertEquals(packet, p);
assertTrue(p.getPayload().contains(IpV4Packet.class));
assertTrue(p.getPayload().contains(IcmpV4CommonPacket.class));
assertTrue(p.getPayload().contains(IcmpV4EchoPacket.class));
assertFalse(p.getPayload().contains(UnknownPacket.class));
assertFalse(p.getPayload().contains(IllegalPacket.class));
}
@Test
public void testGetHeader() {
IcmpV4RedirectHeader h = packet.getHeader();
assertEquals(gatewayInternetAddress, h.getGatewayInternetAddress());
}
}