public static void main(String args[]) throws Exception {
// chapter 2.2-4
// initiate packet capture device
final int snaplen = Pcap.DEFAULT_SNAPLEN;
final int flags = Pcap.MODE_PROMISCUOUS;
final int timeout = Pcap.DEFAULT_TIMEOUT;
final StringBuilder errbuf = new StringBuilder();
Pcap pcap = Pcap.openLive(args[0], snaplen, flags, timeout, errbuf);
if (pcap == null) {
System.out.println("Error while opening device for capture: " + errbuf.toString());
return;
}
// Get local address
e = NetworkInterface.getNetworkInterfaces();
while (e.hasMoreElements()) {
n = (NetworkInterface) e.nextElement();
if (args[0].equals(n.getDisplayName())) {
ee = n.getInetAddresses();
mymac = n.getHardwareAddress();
while (ee.hasMoreElements()) {
inet = (InetAddress) ee.nextElement();
System.out.println(n.getDisplayName() + " " + inet);
}
}
}
// Get IPv4 manually instead of looping through all IP's
// myinet = inet.getAddress();
// packet handler for packet capture
pcap.loop(Integer.parseInt(args[1]), pcappackethandler, "pressure");
pcap.close();
}
public static void main(String[] args) throws InterruptedException {
SynthManager s = new SynthManager();
s.start();
List<PcapIf> alldevs = new ArrayList<PcapIf>(); // Will be filled with NICs
StringBuilder errbuf = new StringBuilder(); // For any error msgs
int r = Pcap.findAllDevs(alldevs, errbuf);
if (r == Pcap.NOT_OK || alldevs.isEmpty()) {
System.err.printf("Can't read list of devices, error is %s", errbuf.toString());
return;
}
System.out.println("Network devices found:");
int i = 0;
for (PcapIf device : alldevs) {
String description =
(device.getDescription() != null) ? device.getDescription() : "No description available";
System.out.printf("#%d: %s [%s]\n", i++, device.getName(), description);
}
System.out.print("\nPlease choose one of the above (only the number): ");
Scanner scan = new Scanner(System.in);
int deviceNum = scan.nextInt();
PcapIf device = alldevs.get(deviceNum); // We know we have atleast 1 device
System.out.printf(
"\nChoosing '%s':\n",
(device.getDescription() != null) ? device.getDescription() : device.getName());
int snaplen = 64 * 1024; // Capture all packets, no trucation
int flags = Pcap.MODE_PROMISCUOUS; // capture all packets
int timeout = 10 * 1000; // 10 seconds in millis
Pcap pcap = Pcap.openLive(device.getName(), snaplen, flags, timeout, errbuf);
if (pcap == null) {
System.err.printf("Error while opening device for capture: " + errbuf.toString());
return;
}
PcapPacketHandler<String> jpacketHandler =
new PcapPacketHandler<String>() {
public void nextPacket(PcapPacket packet, String user) {
try {
byte[] sourceIp = packet.getHeader(new Ip4()).source();
s.playSound(new int[] {sourceIp[0], sourceIp[1], sourceIp[2], sourceIp[3]});
} catch (NullPointerException e) {
}
}
};
pcap.loop(-1, jpacketHandler, "");
pcap.close();
}
/**
* We ignore the argument and open the {@link #device#getName() } instead.
*
* @param pathOrDevice Argument ignored.
* @return Pcap handle to the NIC/device that belongs to this ImportItem.
*/
@Override
protected Pcap getHandle(String pathOrDevice) {
Pcap handle = null;
int snaplen = getImporter().getPreferences().snaplen;
int mode = getImporter().getPreferences().mode;
int timeout = getImporter().getPreferences().timeout;
try {
handle = Pcap.openLive(device.getName(), snaplen, mode, timeout, errorBuffer);
} catch (UnsatisfiedLinkError err) {
Logger.getLogger(PCAPImport.class.getName())
.log(Level.SEVERE, "Importing PCAP is disabled.", err);
}
return handle;
}
