libadlin: Avoid wg infinite loops

libadlin/tunnel.go

@@ -1,6 +1,7 @@
 package adlin
 
 import (
+	"context"
 	"crypto/ed25519"
 	"crypto/rand"
 	"crypto/sha512"
@@ -60,10 +61,13 @@ var (
 )
 
 func _readWgDump() (wgd map[string]*WGDump, err error) {
-	out, errr := exec.Command("wg", "show", "wg-adlin", "dump").Output()
+	ctx, cancel := context.WithTimeout(context.Background(), 500*time.Millisecond)
+	defer cancel()
 
-	if errr != nil {
-		return nil, errr
+	out, err := exec.CommandContext(ctx, "wg", "show", "wg-adlin", "dump").Output()
+
+	if err != nil {
+		return nil, err
 	}
 
 	wgd = map[string]*WGDump{}
@@ -105,7 +109,7 @@ func readWgDump() (wgd map[string]*WGDump, err error) {
 		wgDumpCache_mutex.RLock()
 	}
 
-	return wgd, nil
+	return
 }
 
 type TunnelToken struct {