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