Java Code Examples for org.pcap4j.packet.IpV4Packet#Builder

The following examples show how to use org.pcap4j.packet.IpV4Packet#Builder . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: AbstractIPV4Test.java From trex-stateless-gui with Apache License 2.0

6 votes

/**
 * Build IPV4 packet
 *
 * @param packetData
 * @return
 * @throws IOException
 * @throws InterruptedException
 * @throws PcapNativeException
 * @throws NotOpenException
 * @throws java.net.URISyntaxException
 */
public TrexEthernetPacket buildIPV4Packet(PacketData packetData) throws IOException, InterruptedException, PcapNativeException, NotOpenException, URISyntaxException {

    LOG.info("create ethernet packet");
    int packetLength = PacketBuilderHelper.getPacketLength(packetData.getPacketLength().getLengthType(), packetData.getPacketLength().getFrameLength(), packetData.getPacketLength().getMaxLength());
    Payload payload = packetUtil.getPayload(packetData.getPayload());
    TrexEthernetPacket ethernetPacket = packetUtil.prepareEthernetPacket(packetData, packetLength, payload);

    // define VLAN 
    IpV4Packet.Builder ipV4Packet = getIPV4PacketBuilder(PacketBuilderHelper.getIPV4TotalLength(packetData.isTaggedVlan()), packetLength, payload, packetData);
    if (!packetData.isTaggedVlan()) {
        LOG.info("Add IPV4 packet");
        ethernetPacket.buildPacket(ipV4Packet);
    } else {
        packetUtil.addVlanToPacket(ethernetPacket, ipV4Packet);
    }

    return ethernetPacket;
}

Example 2

Source File: TrexIpV4Packet.java From trex-stateless-gui with Apache License 2.0

5 votes

/**
 *
 * @param builder
 * @param protocol
 */
public void buildPacket(AbstractPacket.AbstractBuilder builder, IpNumber protocol) {

    byte[] pad = new byte[1];
    String payloadPattern = payload.getPayloadPattern();
    String payloadString = payload.getPayloadType().getPadPayloadString(payloadPattern, (totalLength - 20) * 2);

    if (packetLength > DEFAULT_PACKET_LENGTH) {
        payloadString = payload.getPayloadType().getPadPayloadString(payloadPattern, payloadString.length() + ((packetLength - DEFAULT_PACKET_LENGTH) * 2));
        this.totalLength = (short) ((int) totalLength + (packetLength - DEFAULT_PACKET_LENGTH));
    }
    pad = payload.getPayloadPad(payloadString, totalLength - 20);

    ipV4Builder = new IpV4Packet.Builder();
    ipV4Builder.version(version)
            .ihl(ihl)
            .tos(tos)
            .totalLength(totalLength)
            .identification(identification)
            .reservedFlag(reservedFlag)
            .ttl(ttl)
            .fragmentOffset((short) 0)
            .protocol(protocol)
            .headerChecksum(headerChecksum)
            .srcAddr(srcAddr)
            .dstAddr(dstAddr)
            .protocol(protocol)
            .correctChecksumAtBuild(true)
            //  .correctLengthAtBuild(true)
            .payloadBuilder(builder);

    if (protocol != IpNumber.TCP && protocol != IpNumber.UDP) {
        ipV4Builder.paddingAtBuild(false)
                .padding(pad);
    } else {
        ipV4Builder.paddingAtBuild(true).correctLengthAtBuild(true);
    }

    this.packet1 = ipV4Builder.build();
}

Example 3

Source File: PacketUtil.java From trex-stateless-gui with Apache License 2.0

5 votes

/**
 * Add VLan to the generated packet
 *
 * @param ethernetPacket
 * @param ipV4Packet
 */
public void addVlanToPacket(TrexEthernetPacket ethernetPacket, IpV4Packet.Builder ipV4Packet) {
    LOG.info("Add VLAN data");
    ethernetPacket.setType(EtherType.DOT1Q_VLAN_TAGGED_FRAMES.value());
    TrexVlanPacket vlanPacket = new TrexVlanPacket();
    if (ipV4Packet == null) {
        ethernetPacket.setAddPad(true);
        vlanPacket.setType((short) 0xFFFF);
    } else {
        vlanPacket.setType(EtherType.IPV4.value());
    }
    vlanPacket.buildPacket(ipV4Packet);
    ethernetPacket.buildPacket(vlanPacket.getBuilder());
}

Example 4

Source File: TCPTest.java From trex-stateless-gui with Apache License 2.0

5 votes

@Override
protected IpV4Packet.Builder getIPV4PacketBuilder(int totalLength, int packetLength, Payload payload, PacketData packetData) throws UnknownHostException {
    LOG.info("Create IPV4 Packet");
    TrexIpV4Packet ipV4Packet = prepareIPV4Packet(totalLength, packetLength, payload, packetData);

    int ipv4PacketLength = PacketBuilderHelper.getIPV4PacketLength(packetData.isTaggedVlan(), packetLength, totalLength);
    ipV4Packet.setPacketLength(ipv4PacketLength);
    int tcpPacketLength = PacketBuilderHelper.getTcpUdpPacketLength(packetData.isTaggedVlan(), packetLength, totalLength);
    // build  packet
    ipV4Packet.buildPacket(getTcpPacket(payload, tcpPacketLength, packetData).getBuilder(), IpNumber.TCP);

    return ipV4Packet.getBuilder();
}

Example 5

Source File: UDPTest.java From trex-stateless-gui with Apache License 2.0

5 votes

@Override
protected IpV4Packet.Builder getIPV4PacketBuilder(int totalLength, int packetLength, Payload payload, PacketData packetData) throws UnknownHostException {
    LOG.info("Create IPV4 Packet");
    TrexIpV4Packet ipV4Packet = prepareIPV4Packet(totalLength, packetLength, payload, packetData);

    int ipv4PacketLength = PacketBuilderHelper.getIPV4PacketLength(packetData.isTaggedVlan(), packetLength, totalLength);
    ipV4Packet.setPacketLength(ipv4PacketLength);
    int udpPacketLength = PacketBuilderHelper.getTcpUdpPacketLength(packetData.isTaggedVlan(), packetLength, totalLength);
    // build  packet
    ipV4Packet.buildPacket(getUdpPacket(payload, udpPacketLength, packetData).getBuilder(), IpNumber.UDP);

    return ipV4Packet.getBuilder();
}

Example 6