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.IcmpV4CommonPacket.IcmpV4CommonHeader;
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.MacAddress;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@SuppressWarnings("javadoc")
public class IcmpV4CommonPacketTest extends AbstractPacketTest {
private static final Logger logger
= LoggerFactory.getLogger(IcmpV4CommonPacketTest.class);
private final IcmpV4CommonPacket packet;
private final IcmpV4Type type;
private final IcmpV4Code code;
private final short checksum;
public IcmpV4CommonPacketTest() {
UnknownPacket.Builder unknownb = new UnknownPacket.Builder();
unknownb.rawData(new byte[] { (byte)0, (byte)1, (byte)2, (byte)3 });
IcmpV4EchoPacket.Builder echob = new IcmpV4EchoPacket.Builder();
echob.identifier((short)100)
.sequenceNumber((short)10)
.payloadBuilder(unknownb);
this.type = IcmpV4Type.ECHO;
this.code = IcmpV4Code.NO_CODE;
this.checksum = (short)0x1234;
IcmpV4CommonPacket.Builder b = new IcmpV4CommonPacket.Builder();
b.type(type)
.code(code)
.checksum(checksum)
.correctChecksumAtBuild(false)
.payloadBuilder(echob);
this.packet = b.build();
}
@Override
protected Packet getPacket() {
return packet;
}
@Override
protected Packet getWholePacket() throws UnknownHostException {
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(packet.getBuilder().correctChecksumAtBuild(true))
.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(
"########## " + IcmpV4CommonPacketTest.class.getSimpleName() + " START ##########"
);
}
@AfterClass
public static void tearDownAfterClass() throws Exception {
}
@Test
public void testNewPacket() {
try {
IcmpV4CommonPacket p
= IcmpV4CommonPacket.newPacket(packet.getRawData(), 0, packet.getRawData().length);
assertEquals(packet, p);
} catch (IllegalRawDataException e) {
throw new AssertionError(e);
}
}
@Test
public void testNewPacketRandom() {
RandomPacketTester.testClass(IcmpV4CommonPacket.class, packet);
}
@Test
public void testGetHeader() {
IcmpV4CommonHeader h = packet.getHeader();
assertEquals(type, h.getType());
assertEquals(code, h.getCode());
assertEquals(checksum, h.getChecksum());
}
@Test
public void testHasValidChecksum() {
assertFalse(packet.hasValidChecksum(false));
assertFalse(packet.hasValidChecksum(true));
IcmpV4CommonPacket.Builder b = packet.getBuilder();
IcmpV4CommonPacket p;
b.checksum((short)0).correctChecksumAtBuild(false);
p = b.build();
assertFalse(p.hasValidChecksum(false));
assertTrue(p.hasValidChecksum(true));
b.correctChecksumAtBuild(true);
p = b.build();
assertTrue(p.hasValidChecksum(false));
assertTrue(p.hasValidChecksum(true));
}
}