@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (!super.equals(obj)) return false;
if (getClass() != obj.getClass()) return false;
ARP other = (ARP) obj;
if (hardwareAddressLength != other.hardwareAddressLength) return false;
if (hardwareType != other.hardwareType) return false;
if (opCode == null) {
if (other.opCode != null) return false;
} else if (!opCode.equals(other.opCode)) return false;
if (protocolAddressLength != other.protocolAddressLength) return false;
if (protocolType != other.protocolType) return false;
if (senderHardwareAddress == null) {
if (other.senderHardwareAddress != null) return false;
} else if (!senderHardwareAddress.equals(other.senderHardwareAddress)) return false;
if (senderProtocolAddress == null) {
if (other.senderProtocolAddress != null) return false;
} else if (!senderProtocolAddress.equals(other.senderProtocolAddress)) return false;
if (targetHardwareAddress == null) {
if (other.targetHardwareAddress != null) return false;
} else if (!targetHardwareAddress.equals(other.targetHardwareAddress)) return false;
if (targetProtocolAddress == null) {
if (other.targetProtocolAddress != null) return false;
} else if (!targetProtocolAddress.equals(other.targetProtocolAddress)) return false;
return true;
}
@Override
public IPacket deserialize(byte[] data, int offset, int length) throws PacketParsingException {
ByteBuffer bb = ByteBuffer.wrap(data, offset, length);
this.hardwareType = bb.getShort();
this.protocolType = bb.getShort();
this.hardwareAddressLength = bb.get();
this.protocolAddressLength = bb.get();
if (this.hardwareAddressLength != 6) {
String msg = "Incorrect ARP hardware address length: " + hardwareAddressLength;
throw new PacketParsingException(msg);
}
if (this.protocolAddressLength != 4) {
String msg = "Incorrect ARP protocol address length: " + protocolAddressLength;
throw new PacketParsingException(msg);
}
this.opCode = ArpOpcode.of(bb.getShort());
byte[] tmpMac = new byte[0xff & this.hardwareAddressLength];
byte[] tmpIp = new byte[0xff & this.protocolAddressLength];
bb.get(tmpMac, 0, this.hardwareAddressLength);
this.senderHardwareAddress = MacAddress.of(tmpMac);
bb.get(tmpIp, 0, this.protocolAddressLength);
this.senderProtocolAddress = IPv4Address.of(tmpIp);
bb.get(tmpMac, 0, this.hardwareAddressLength);
this.targetHardwareAddress = MacAddress.of(tmpMac);
bb.get(tmpIp, 0, this.protocolAddressLength);
this.targetProtocolAddress = IPv4Address.of(tmpIp);
return this;
}
@Override
public int hashCode() {
final int prime = 31;
int result = super.hashCode();
result = prime * result + hardwareAddressLength;
result = prime * result + hardwareType;
result = prime * result + ((opCode == null) ? 0 : opCode.hashCode());
result = prime * result + protocolAddressLength;
result = prime * result + protocolType;
result =
prime * result + ((senderHardwareAddress == null) ? 0 : senderHardwareAddress.hashCode());
result =
prime * result + ((senderProtocolAddress == null) ? 0 : senderProtocolAddress.hashCode());
result =
prime * result + ((targetHardwareAddress == null) ? 0 : targetHardwareAddress.hashCode());
result =
prime * result + ((targetProtocolAddress == null) ? 0 : targetProtocolAddress.hashCode());
return result;
}