Add windowskext integration, update related packages

firewall/interception/interception_windows.go

@@ -3,8 +3,12 @@ package interception
 import (
 	"fmt"
 
-	"github.com/Safing/portmaster/firewall/interception/windivert"
+	"github.com/Safing/portbase/log"
+	"github.com/Safing/portbase/notifications"
+	"github.com/Safing/portbase/utils/osdetail"
+	"github.com/Safing/portmaster/firewall/interception/windowskext"
 	"github.com/Safing/portmaster/network/packet"
+	"github.com/Safing/portmaster/updates"
 )
 
 var Packets chan packet.Packet
@@ -17,15 +21,73 @@ func init() {
 // Start starts the interception.
 func Start() error {
 
-	wd, err := windivert.New("/WinDivert.dll", "")
+	dllFile, err := updates.GetPlatformFile("kext/portmaster-kext.dll")
 	if err != nil {
-		return fmt.Errorf("firewall/interception: could not init windivert: %s", err)
+		return fmt.Errorf("interception: could not get kext dll: %s", err)
+	}
+	kextFile, err := updates.GetPlatformFile("kext/portmaster-kext.sys")
+	if err != nil {
+		return fmt.Errorf("interception: could not get kext sys: %s", err)
 	}
 
-	return wd.Packets(Packets)
+	err = windowskext.Init(dllFile.Path(), kextFile.Path())
+	if err != nil {
+		return fmt.Errorf("interception: could not init windows kext: %s", err)
+	}
+
+	err = windowskext.Start()
+	if err != nil {
+		return fmt.Errorf("interception: could not start windows kext: %s", err)
+	}
+
+	go windowskext.Handler(Packets)
+	go handleWindowsDNSCache()
+
+	return nil
 }
 
 // Stop starts the interception.
 func Stop() error {
-	return nil
+	return windowskext.Stop()
+}
+
+func handleWindowsDNSCache() {
+
+	err := osdetail.StopService("dnscache")
+	if err != nil {
+		// cannot stop dnscache, try disabling
+		if err == osdetail.ErrServiceNotStoppable {
+			err := osdetail.DisableDNSCache()
+			if err != nil {
+				log.Warningf("firewall/interception: failed to disable Windows Service \"DNS Client\" (dnscache) for better interception: %s", err)
+				notifyDisableDNSCache()
+			}
+			notifyRebootRequired()
+			return
+		}
+
+		// error while stopping service
+		log.Warningf("firewall/interception: failed to stop Windows Service \"DNS Client\" (dnscache) for better interception: %s", err)
+		notifyDisableDNSCache()
+	}
+
+	// log that service is stopped
+	log.Info("firewall/interception: Windows Service \"DNS Client\" (dnscache) is stopped for better interception")
+
+}
+
+func notifyDisableDNSCache() {
+	(&notifications.Notification{
+		ID:      "windows-disable-dns-cache",
+		Message: "The Portmaster needs the Windows Service \"DNS Client\" (dnscache) to be disabled for best effectiveness.",
+		Type:    notifications.Warning,
+	}).Init().Save()
+}
+
+func notifyRebootRequired() {
+	(&notifications.Notification{
+		ID:      "windows-dnscache-reboot-required",
+		Message: "Please restart your system to complete Portmaster integration.",
+		Type:    notifications.Warning,
+	}).Init().Save()
 }