wifictld-analyzer/cmd/dump.go

package cmd

import (
	"net"
	"os"
	"os/signal"
	"strings"
	"syscall"

	log "github.com/sirupsen/logrus"
	"github.com/spf13/cobra"

	"dev.sum7.eu/wifictld/analyzer/capture"
	"dev.sum7.eu/wifictld/analyzer/data"
)

var (
	port      int
	ipAddress string
)

// queryCmd represents the query command
var dumpCmd = &cobra.Command{
	Use:     "dump <interfaces>",
	Short:   "capture wifictld traffic and just display the values (like wireshark)",
	Example: `analyzer dump "eth0,wlan0"`,
	Args:    cobra.ExactArgs(1),
	Run: func(cmd *cobra.Command, args []string) {
		ifaces := strings.Split(args[0], ",")

		log.Infof("listen on: %s", ifaces)

		var ifacesConfigs []*capture.IFaceConfig
		for _, iface := range ifaces {
			ifaceConfig := &capture.IFaceConfig{
				InterfaceName: iface,
				Port:          port,
				IPAddress:     ipAddress,
			}
			ifacesConfigs = append(ifacesConfigs, ifaceConfig)
		}

		data.DEBUG = debug

		coll := capture.NewCollector(func(addr *net.UDPAddr, msg *data.SocketMSG) (*data.SocketMSG, error) {
			log.Infof("recv[%s]: %s", addr, msg.String())
			return nil, nil
		}, ifacesConfigs)
		defer coll.Close()

		// Wait for INT/TERM
		sigs := make(chan os.Signal, 1)
		signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
		sig := <-sigs
		log.Println("received", sig)

	},
}

func init() {
	RootCmd.AddCommand(dumpCmd)
	dumpCmd.Flags().IntVar(&port, "port", capture.Port, "define a port to listen (if not set or set to 0 the kernel will use a random free port at its own)")
	dumpCmd.Flags().StringVar(&ipAddress, "listen", capture.MulticastAddressDefault, "")
}