org.pcap4j.packet.UdpPacket Java Examples
The following examples show how to use
org.pcap4j.packet.UdpPacket.
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Example #1
| Source File: PacketUpdater.java From trex-stateless-gui with Apache License 2.0 | 7 votes |
|
private Packet fixL3L4Checksums(Packet packet) {
Packet.Builder builder = packet.getBuilder();
builder.get(IpV4Packet.Builder.class).correctChecksumAtBuild(true);
TcpPacket.Builder tcpBuilder = builder.get(TcpPacket.Builder.class);
if (tcpBuilder != null) {
tcpBuilder.srcAddr(packet.get(IpV4Packet.class).getHeader().getSrcAddr());
tcpBuilder.dstAddr(packet.get(IpV4Packet.class).getHeader().getDstAddr());
tcpBuilder.correctChecksumAtBuild(true);
}
UdpPacket.Builder udpBuilder = builder.get(UdpPacket.Builder.class);
if (udpBuilder != null) {
udpBuilder.srcAddr(packet.get(IpV4Packet.class).getHeader().getSrcAddr());
udpBuilder.dstAddr(packet.get(IpV4Packet.class).getHeader().getDstAddr());
udpBuilder.correctChecksumAtBuild(true);
}
return builder.build();
}
Example #2
| Source File: TrexUdpPacket.java From trex-stateless-gui with Apache License 2.0 | 5 votes |
|
/**
* Build packet
*
* @throws java.net.UnknownHostException
*/
public void buildPacket() throws UnknownHostException {
int calculatedLength = getPacketLength();
String payloadString = payload.getPayloadType().getPadPayloadString(payload.getPayloadPattern(), calculatedLength * 2);
udpBuilder = new UdpPacket.Builder();
UnknownPacket.Builder unknownb = new UnknownPacket.Builder();
unknownb.rawData(payload.getPayloadPad(payloadString, calculatedLength));
Inet4Address srcAddr = (Inet4Address) InetAddress.getByAddress(
new byte[]{(byte) 0, (byte) 0, (byte) 0, (byte) 0}
);
Inet4Address dstAddr = (Inet4Address) InetAddress.getByAddress(
new byte[]{(byte) 0, (byte) 0, (byte) 0, (byte) 0}
);
udpBuilder.srcPort(UdpPort.getInstance((short) srcPort.value()))
.dstPort(UdpPort.getInstance((short) dstPort.value()))
.srcAddr(srcAddr)
.dstAddr(dstAddr)
.length((short) calculatedLength)
.payloadBuilder(unknownb)
.checksum((short) 0)
.correctLengthAtBuild(false);
this.packet = udpBuilder.build();
}
Example #3
| Source File: PacketUpdater.java From trex-stateless-gui with Apache License 2.0 | 5 votes |
|
/**
* Return source port
*
* @param packet
* @return
*/
private String getSrcPort(Packet packet) {
if (protocolType.equals("TCP")) {
return packet.get(TcpPacket.class).getHeader().getSrcPort().toString();
} else if (protocolType.equals("UDP")) {
return packet.get(UdpPacket.class).getHeader().getSrcPort().toString();
}
return "80";
}
Example #4
| Source File: PacketUpdater.java From trex-stateless-gui with Apache License 2.0 | 5 votes |
|
/**
* Return destination port
*
* @param packet
* @return
*/
private String getDstPort(Packet packet) {
if (protocolType.equals("TCP")) {
return packet.get(TcpPacket.class).getHeader().getDstPort().toString();
} else if (protocolType.equals("UDP")) {
return packet.get(UdpPacket.class).getHeader().getDstPort().toString();
}
return "80";
}
Example #5
| Source File: Boot.java From MakeLobbiesGreatAgain with MIT License | 4 votes |
|
public static void main(String[] args) throws UnsupportedLookAndFeelException, AWTException, ClassNotFoundException, InterruptedException,
FontFormatException, InstantiationException, IllegalAccessException, IOException, PcapNativeException, NotOpenException {
System.setProperty("jna.nosys", "true");
if (!Sanity.check()) {
System.exit(1);
}
Settings.init();
Settings.set("autoload", Settings.get("autoload", "0")); //"autoload" is an ini-only toggle for advanced users.
setupTray();
getLocalAddr();
nif = Pcaps.getDevByAddress(addr);
if (nif == null) {
JOptionPane.showMessageDialog(null, "The device you selected doesn't seem to exist. Double-check the IP you entered.", "Error", JOptionPane.ERROR_MESSAGE);
System.exit(1);
}
final int addrHash = addr.hashCode();
final int snapLen = 65536;
final PromiscuousMode mode = PromiscuousMode.NONPROMISCUOUS;
final int timeout = 0;
handle = nif.openLive(snapLen, mode, timeout);
handle.setFilter("udp && less 150", BpfProgram.BpfCompileMode.OPTIMIZE);
ui = new Overlay();
while (running) {
final Packet packet = handle.getNextPacket();
if (packet != null) {
final IpV4Packet ippacket = packet.get(IpV4Packet.class);
if (ippacket != null) {
final UdpPacket udppack = ippacket.get(UdpPacket.class);
if (udppack != null && udppack.getPayload() != null) {
final int srcAddrHash = ippacket.getHeader().getSrcAddr().hashCode();
final int dstAddrHash = ippacket.getHeader().getDstAddr().hashCode();
final int payloadLen = udppack.getPayload().getRawData().length;
if (active.containsKey(srcAddrHash) && srcAddrHash != addrHash) {
if (active.get(srcAddrHash) != null && payloadLen == 68 //Packets are STUN related: 56 is request, 68 is response
&& dstAddrHash == addrHash) {
ui.setPing(ippacket.getHeader().getSrcAddr(), handle.getTimestamp().getTime() - active.get(srcAddrHash).getTime());
active.put(srcAddrHash, null); //No longer expect ping
}
} else {
if (payloadLen == 56 && srcAddrHash == addrHash) {
active.put(ippacket.getHeader().getDstAddr().hashCode(), handle.getTimestamp());
}
}
}
}
}
}
}
Example #6
| Source File: PacketParser.java From trex-stateless-gui with Apache License 2.0 | 4 votes |
|
/**
* Extract packet info
*
* @param packet
* @return
*/
private PacketInfo extractPacketInfo(Packet packet) {
if (packet != null) {
packetInfo.setPacketHex(formatHex(DatatypeConverter.printHexBinary(packet.getRawData())));
packetInfo.setPacketRawData(formatPayLoad(new String(packet.getRawData())));
}
// defien whether packet has vlan or not
if(packet.get(Dot1qVlanTagPacket.class) != null){
packetInfo.setVlanPacket(true);
}
// If the packet has Ethernet
if (packet.get(EthernetPacket.class) != null) {
packetInfo.setEthernetHex(getHeaderOffset(packet.get(EthernetPacket.class).getHeader().toHexString().toUpperCase()));
packetInfo.setEthernetRawData(new String());
packetInfo.setDestMac(packet.get(EthernetPacket.class).getHeader().getDstAddr().toString());
packetInfo.setSrcMac(packet.get(EthernetPacket.class).getHeader().getSrcAddr().toString());
}
// if the packet has IPV4
if (packet.get(IpV4Packet.class) != null) {
packetInfo.setIpv4Hex(getHeaderOffset(packet.get(IpV4Packet.class).getHeader().toHexString().toUpperCase()));
packetInfo.setIpv4RawData(new String());
packetInfo.setDestIpv4(packet.get(IpV4Packet.class).getHeader().getDstAddr().getHostAddress());
packetInfo.setSrcIpv4(packet.get(IpV4Packet.class).getHeader().getSrcAddr().getHostAddress());
}
// if the packet has TCP
if (packet.get(TcpPacket.class) != null) {
packetInfo.setL4Name("TCP");
packetInfo.setL4Hex(getHeaderOffset(packet.get(TcpPacket.class).getHeader().toHexString().toUpperCase()));
packetInfo.setL4RawData(new String());
if (packet.get(TcpPacket.class).getPayload() != null) {
packetInfo.setPacketPayLoad(getHeaderOffset(spaceHex(Hex.encodeHexString(packet.get(TcpPacket.class).getPayload().getRawData()))));
} else {
packetInfo.setPacketPayLoad(null);
}
}
// if the packet has UDP
if (packet.get(UdpPacket.class) != null) {
packetInfo.setL4Name("UDP");
packetInfo.setL4Hex(getHeaderOffset(packet.get(UdpPacket.class).getHeader().toHexString().toUpperCase()));
packetInfo.setL4RawData(new String());
if (packet.get(UdpPacket.class).getPayload() != null) {
packetInfo.setPacketPayLoad(getHeaderOffset(spaceHex(Hex.encodeHexString(packet.get(UdpPacket.class).getPayload().getRawData()))));
} else {
packetInfo.setPacketPayLoad(null);
}
}
return packetInfo;
}
Example #7
| Source File: DhcpPacketListener.java From dhcp4j with Apache License 2.0 | 4 votes |
|
@Override
public void gotPacket(Packet rawPacket) {
try {
LOG.info("Read raw " + rawPacket);
IpV4Packet ipPacket = rawPacket.get(IpV4Packet.class);
UdpPacket udpPacket = rawPacket.get(UdpPacket.class);
byte[] dhcpData = udpPacket.getPayload().getRawData();
InetSocketAddress remoteAddress = new InetSocketAddress(ipPacket.getHeader().getSrcAddr(), udpPacket.getHeader().getSrcPort().valueAsInt());
InetSocketAddress localAddress = new InetSocketAddress(ipPacket.getHeader().getDstAddr(), udpPacket.getHeader().getDstPort().valueAsInt());
DhcpRequestContext context = new DhcpRequestContext(interfaceAddresses, remoteAddress, localAddress);
DhcpMessage request = decoder.decode(ByteBuffer.wrap(dhcpData));
LOG.info("Read DHCP " + request);
DhcpMessage reply = service.getReplyFor(context, request);
if (reply == null)
return;
byte[] replyData = new byte[1536];
ByteBuffer buffer = ByteBuffer.wrap(replyData);
encoder.encode(buffer, reply);
replyData = Arrays.copyOf(replyData, buffer.position()); // Truncate array to writer position.
UnknownPacket.Builder dhcpBuilder = new UnknownPacket.Builder()
.rawData(replyData);
UdpPacket.Builder udpBuilder = new UdpPacket.Builder()
.payloadBuilder(dhcpBuilder)
.srcPort(udpPacket.getHeader().getDstPort())
.dstPort(udpPacket.getHeader().getSrcPort())
.correctChecksumAtBuild(true)
.correctLengthAtBuild(true);
IpV4Packet.Builder ipBuilder = new IpV4Packet.Builder()
.payloadBuilder(udpBuilder)
.srcAddr(null) // TODO
.dstAddr(null) // TODO
.protocol(IpNumber.UDP)
.correctChecksumAtBuild(true)
.correctLengthAtBuild(true)
.paddingAtBuild(true);
EthernetPacket.Builder ethernetBuilder = new EthernetPacket.Builder()
.payloadBuilder(ipBuilder)
.type(EtherType.IPV4)
.paddingAtBuild(true);
Packet replyPacket = ethernetBuilder.build();
// handle.sendPacket(replyPacket);
} catch (Exception e) {
LOG.error("DHCP failed", e);
}
}
Example #8
| Source File: IpmiPacketReader.java From ipmi4j with Apache License 2.0 | 4 votes |
|
protected void processUdp(UdpPacket packet) {
}
Example #9
| Source File: DhcpPacketListener.java From dhcp4j with Apache License 2.0 | 4 votes |
|
@Override
public void gotPacket(Packet rawPacket) {
try {
LOG.info("Read raw " + rawPacket);
IpV4Packet ipPacket = rawPacket.get(IpV4Packet.class);
UdpPacket udpPacket = rawPacket.get(UdpPacket.class);
byte[] dhcpData = udpPacket.getPayload().getRawData();
InetSocketAddress remoteAddress = new InetSocketAddress(ipPacket.getHeader().getSrcAddr(), udpPacket.getHeader().getSrcPort().valueAsInt());
InetSocketAddress localAddress = new InetSocketAddress(ipPacket.getHeader().getDstAddr(), udpPacket.getHeader().getDstPort().valueAsInt());
DhcpRequestContext context = new DhcpRequestContext(interfaceAddresses, remoteAddress, localAddress);
DhcpMessage request = decoder.decode(ByteBuffer.wrap(dhcpData));
LOG.info("Read DHCP " + request);
DhcpMessage reply = service.getReplyFor(context, request);
if (reply == null)
return;
byte[] replyData = new byte[1536];
ByteBuffer buffer = ByteBuffer.wrap(replyData);
encoder.encode(buffer, reply);
replyData = Arrays.copyOf(replyData, buffer.position()); // Truncate array to writer position.
UnknownPacket.Builder dhcpBuilder = new UnknownPacket.Builder()
.rawData(replyData);
UdpPacket.Builder udpBuilder = new UdpPacket.Builder()
.payloadBuilder(dhcpBuilder)
.srcPort(udpPacket.getHeader().getDstPort())
.dstPort(udpPacket.getHeader().getSrcPort())
.correctChecksumAtBuild(true)
.correctLengthAtBuild(true);
IpV4Packet.Builder ipBuilder = new IpV4Packet.Builder()
.payloadBuilder(udpBuilder)
.srcAddr(null) // TODO
.dstAddr(null) // TODO
.protocol(IpNumber.UDP)
.correctChecksumAtBuild(true)
.correctLengthAtBuild(true)
.paddingAtBuild(true);
EthernetPacket.Builder ethernetBuilder = new EthernetPacket.Builder()
.payloadBuilder(ipBuilder)
.type(EtherType.IPV4)
.paddingAtBuild(true);
Packet replyPacket = ethernetBuilder.build();
// handle.sendPacket(replyPacket);
} catch (Exception e) {
LOG.error("DHCP failed", e);
}
}
Example #10
| Source File: TrexUdpPacket.java From trex-stateless-gui with Apache License 2.0 | 2 votes |
|
/**
*
* @return
*/
public UdpPacket.Builder getBuilder() {
return udpBuilder;
}
