79 lines
1.4 KiB
Go
79 lines
1.4 KiB
Go
package main
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"log"
|
|
"os/exec"
|
|
"strings"
|
|
|
|
"github.com/songgao/packets/ethernet"
|
|
"github.com/songgao/water"
|
|
"github.com/songgao/water/waterutil"
|
|
)
|
|
|
|
func init() {
|
|
log.SetFlags(log.Llongfile | log.LstdFlags)
|
|
}
|
|
|
|
//go:generate bash -c "protoc --go_out=plugins=grpc:. proto/*.proto"
|
|
func main() {
|
|
// testmain()
|
|
NewNetCard().Run()
|
|
}
|
|
|
|
var (
|
|
flagAddr = flag.String("addr", "", "addr set")
|
|
)
|
|
|
|
func startCard() {
|
|
cmdstr := fmt.Sprintf("ip addr add %s dev stun", *flagAddr)
|
|
log.Println(cmdstr)
|
|
cmd := strings.Split(cmdstr, " ")
|
|
err := exec.Command(cmd[0], cmd[1:]...).Run()
|
|
if err != nil {
|
|
log.Panic(err)
|
|
}
|
|
|
|
cmdstr = "ip link set dev stun up"
|
|
cmd = strings.Split(cmdstr, " ")
|
|
err = exec.Command(cmd[0], cmd[1:]...).Run()
|
|
if err != nil {
|
|
log.Panic(err)
|
|
}
|
|
}
|
|
func testmain() {
|
|
|
|
flag.Parse()
|
|
|
|
config := water.Config{
|
|
DeviceType: water.TAP,
|
|
}
|
|
config.Name = "stun"
|
|
|
|
ifce, err := water.New(config)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
startCard()
|
|
|
|
var frame ethernet.Frame
|
|
for {
|
|
|
|
frame.Resize(1500)
|
|
n, err := ifce.Read([]byte(frame))
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
frame = frame[:n]
|
|
|
|
log.Printf("DstMac: %s SrcMac: %s\n", waterutil.MACDestination(frame), waterutil.MACSource(frame))
|
|
log.Printf("DstIP: %s SrcIP: %s\n", waterutil.IPv4Destination(frame), waterutil.IPv4Source(frame))
|
|
log.Printf("Ethertype: % x\n", frame.Ethertype())
|
|
// log.Printf("Payload: % x\n", frame.Payload())
|
|
|
|
ifce.Write(frame)
|
|
}
|
|
}
|