implemented post up script

2 files changed, 20 insertions, 3 deletions

diff --git a/app/anygone.go b/app/anygone.go
index 239f4e8..7979a4d 100644
--- a/app/anygone.go
+++ b/app/anygone.go
@@ -82,10 +82,12 @@ func main() {
 		}
 	}
 	if cfg.PostUp != "" {
+		al.Printf("running post-up script: %s", cfg.PostUp)
 		if err = dev.RunPostUp(cfg.PostUp); err != nil {
 			al.Printf("Error while running post-up script: %v", err)
 			os.Exit(1)
 		}
+		al.Printf("post-up script: success")
 	}
 
 	for {
diff --git a/tuntap/tuntap.go b/tuntap/tuntap.go
index 6c27171..db1492f 100644
--- a/tuntap/tuntap.go
+++ b/tuntap/tuntap.go
@@ -31,14 +31,25 @@
 package tuntap
 
 import (
+	"context"
 	"fmt"
 	"net"
+	"os/exec"
 	"strings"
+	"time"
 
 	extlib "github.com/lab11/go-tuntap/tuntap"
 	"github.com/vishvananda/netlink"
 )
 
+const (
+	EtherTypeIPv4                      = 0x0800
+	EtherTypeIPv6                      = 0x86DD
+	EtherTypeTransparentEthernetBridge = 0x6558
+
+	PostUpScriptTimeout = 10 * time.Second
+)
+
 type Device struct {
 	iface  *extlib.Interface
 	iftype extlib.DevKind
@@ -68,15 +79,19 @@ func (dev *Device) Configure(addr net.IPNet) error {
 }
 
 func (dev *Device) RunPostUp(script string) error {
-	// TODO: implement this
-	fmt.Printf("running: %s %s\n", script, dev.iface.Name())
+	ctx, cancel := context.WithTimeout(context.Background(), PostUpScriptTimeout)
+	defer cancel()
+
+	if err := exec.CommandContext(ctx, script, dev.ifname).Run(); err != nil {
+		return err
+	}
 	return nil
 }
 
 func (dev *Device) ReadPacket() (pkt *extlib.Packet, err error) {
 	pkt, err = dev.iface.ReadPacket()
 	if dev.iftype == extlib.DevTap {
-		pkt.Protocol = 0x6558 // TODO: hardcoded value
+		pkt.Protocol = EtherTypeTransparentEthernetBridge
 	}
 	return
 }