basic tun/tap handling

2 files changed, 20 insertions, 3 deletions

diff --git a/app/Makefile b/app/Makefile
index 4e7a810..c19ceda 100644
--- a/app/Makefile
+++ b/app/Makefile
@@ -35,6 +35,7 @@ endif
 EXECUTEABLE := anygone
 
 LIBS := "spreadspace.org/anytun/anygone/satp" \
+        "github.com/lab11/go-tuntap/tuntap" \
         "github.com/spf13/pflag"
 
 all: build
diff --git a/app/anygone.go b/app/anygone.go
index d611631..3c9de8b 100644
--- a/app/anygone.go
+++ b/app/anygone.go
@@ -36,6 +36,7 @@ import (
 	"log"
 	"os"
 
+	"github.com/lab11/go-tuntap/tuntap"
 	"github.com/spf13/pflag"
 )
 
@@ -45,9 +46,9 @@ var (
 )
 
 func init() {
-	if _, exists := os.LookupEnv("ANYGONE_DEBUG"); exists {
-		adl.SetOutput(os.Stderr)
-	}
+	//	if _, exists := os.LookupEnv("ANYGONE_DEBUG"); exists {
+	adl.SetOutput(os.Stderr)
+	//	}
 }
 
 func printUsage() {
@@ -75,4 +76,19 @@ func main() {
 	}
 
 	al.Println("just started...")
+
+	tund, err := tuntap.Open("anygone%d", tuntap.DevTun, true)
+	if err != nil {
+		al.Printf("Error while opening device: %v", err)
+		os.Exit(1)
+	}
+
+	var pkt *tuntap.Packet
+	for {
+		if pkt, err = tund.ReadPacket(); err != nil {
+			al.Printf("Error while reading packet from device: %v", err)
+			os.Exit(1)
+		}
+		adl.Printf("got packat: %v", pkt)
+	}
 }