예제 #1
0
파일: main.go 프로젝트: vtolstov/cloudmeta
func main() {
	defer util.Run()()
	var ring *pfring.Ring
	var err error
	if ring, err = pfring.NewRing(*iface, uint32(*snaplen), pfring.FlagPromisc); err != nil {
		log.Fatalln("pfring ring creation error:", err)
	}
	if len(flag.Args()) > 0 {
		bpffilter := strings.Join(flag.Args(), " ")
		fmt.Fprintf(os.Stderr, "Using BPF filter %q\n", bpffilter)
		if err = ring.SetBPFFilter(bpffilter); err != nil {
			log.Fatalln("BPF filter error:", err)
		}
	}
	if *cluster >= 0 {
		if err = ring.SetCluster(*cluster, pfring.ClusterType(*clustertype)); err != nil {
			log.Fatalln("pfring SetCluster error:", err)
		}
	}
	if err = ring.SetSocketMode(pfring.ReadOnly); err != nil {
		log.Fatalln("pfring SetSocketMode error:", err)
	} else if err = ring.Enable(); err != nil {
		log.Fatalln("pfring Enable error:", err)
	}
	dumpcommand.Run(ring)
}
예제 #2
0
파일: main.go 프로젝트: vtolstov/cloudmeta
func main() {
	defer util.Run()()
	var handle *pcap.Handle
	var err error
	if *fname != "" {
		if handle, err = pcap.OpenOffline(*fname); err != nil {
			log.Fatal("PCAP OpenOffline error:", err)
		}
	} else {
		// This is a little complicated because we want to allow all possible options
		// for creating the packet capture handle... instead of all this you can
		// just call pcap.OpenLive if you want a simple handle.
		inactive, err := pcap.NewInactiveHandle(*iface)
		if err != nil {
			log.Fatal("could not create: %v", err)
		}
		defer inactive.CleanUp()
		if err = inactive.SetSnapLen(*snaplen); err != nil {
			log.Fatal("could not set snap length: %v", err)
		} else if err = inactive.SetPromisc(*promisc); err != nil {
			log.Fatal("could not set promisc mode: %v", err)
		} else if err = inactive.SetTimeout(time.Second); err != nil {
			log.Fatal("could not set timeout: %v", err)
		}
		if *tstype != "" {
			if t, err := pcap.TimestampSourceFromString(*tstype); err != nil {
				log.Fatalf("Supported timestamp types: %v", inactive.SupportedTimestamps())
			} else if err := inactive.SetTimestampSource(t); err != nil {
				log.Fatalf("Supported timestamp types: %v", inactive.SupportedTimestamps())
			}
		}
		if handle, err = inactive.Activate(); err != nil {
			log.Fatal("PCAP Activate error:", err)
		}
		defer handle.Close()
		if len(flag.Args()) > 0 {
			bpffilter := strings.Join(flag.Args(), " ")
			fmt.Fprintf(os.Stderr, "Using BPF filter %q\n", bpffilter)
			if err = handle.SetBPFFilter(bpffilter); err != nil {
				log.Fatal("BPF filter error:", err)
			}
		}
	}
	dumpcommand.Run(handle)
}