1 files changed, 10 insertions, 0 deletions
diff --git a/helper/darwin.go b/helper/darwin.go
index 10bab31..99e0d46 100644
--- a/helper/darwin.go
+++ b/helper/darwin.go
@@ -27,6 +27,7 @@ To inspect the rules in the firewall manually, use the bitmask anchor:
 package main
 
 import (
+	"bytes"
 	"errors"
 	"fmt"
 	"log"
@@ -103,6 +104,15 @@ func firewallStop() error {
 	return exec.Command(pfctl, "-a", bitmask_anchor, "-F", "all").Run()
 }
 
+func firewallIsUp() bool {
+	out, err := exec.Command(pfctl, "-a", bitmask_anchor, "-sr").Output()
+	if err != nil {
+		log.Printf("An error ocurred getting the status of the firewall: %v", err)
+		return false
+	}
+	return bytes.Contains(out, []byte("block out proto udp to any port 53"))
+}
+
 func enablePf() {
 	cmd := exec.Command(pfctl, "-e")
 	cmd.Run()