[feat] cleanup temp dirs on quit

pkg/backend/actions.go

+package backend
+
+import (
+	"log"
+	"os"
+)
+
+func startVPN() {
+	err := ctx.bm.StartVPN(ctx.Provider)
+	if err != nil {
+		log.Println(err)
+		os.Exit(1)
+	}
+}
+
+func stopVPN() {
+	err := ctx.bm.StopVPN()
+	if err != nil {
+		log.Println(err)
+	}
+}

pkg/backend/api.go

-/* All the exported functions live here */
+/* All the exported functions should be added here */
 
 package backend
 
@@ -24,7 +24,7 @@ func SwitchOff() {
 }
 
 func Unblock() {
-	//TODO
+	//TODO -
 	fmt.Println("unblock... [not implemented]")
 }
 
@@ -34,6 +34,7 @@ func Quit() {
 		ctx.cfg.SetUserStoppedVPN(true)
 		stopVPN()
 	}
+	cleanupTempDirs()
 }
 
 func DonateAccepted() {
@@ -51,10 +52,7 @@ func SubscribeToEvent(event string, f unsafe.Pointer) {
 func InitializeBitmaskContext() {
 	p := bitmask.GetConfiguredProvider()
 
-	initOnce.Do(func() {
-		initializeContext(
-			p.Provider, p.AppName)
-	})
+	initOnce.Do(func() { initializeContext(p.Provider, p.AppName) })
 	go ctx.updateStatus()
 
 	go func() {

pkg/backend/cleanup.go

+package backend
+
+import (
+	"log"
+	"os"
+	"path"
+	"path/filepath"
+)
+
+func cleanupTempDirs() {
+	dirs, _ := filepath.Glob(path.Join(os.TempDir(), "leap-*"))
+	for _, d := range dirs {
+		log.Println("removing temp dir:", d)
+		os.RemoveAll(d)
+	}
+}