From 84fca06c6290b0b41321d5c9559bf1a656413f59 Mon Sep 17 00:00:00 2001
From: Cuong Manh Le <cuong@windscribe.com>
Date: Tue, 21 Feb 2023 20:39:45 +0700
Subject: [PATCH] cmd/ctrld: implement allocate/deallocate ip on freebsd

Updates #56
---
 cmd/ctrld/os_freebsd.go | 21 +++++++++++++++++++++
 cmd/ctrld/os_others.go  |  2 +-
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/cmd/ctrld/os_freebsd.go b/cmd/ctrld/os_freebsd.go
index b65de54..da1a05a 100644
--- a/cmd/ctrld/os_freebsd.go
+++ b/cmd/ctrld/os_freebsd.go
@@ -3,11 +3,32 @@ package main
 import (
 	"net"
 	"net/netip"
+	"os/exec"
 
 	"github.com/Control-D-Inc/ctrld/internal/dns"
 	"github.com/Control-D-Inc/ctrld/internal/resolvconffile"
 )
 
+// allocate loopback ip
+// sudo ifconfig lo0 127.0.0.53 alias
+func allocateIP(ip string) error {
+	cmd := exec.Command("ifconfig", "lo0", ip, "alias")
+	if err := cmd.Run(); err != nil {
+		mainLog.Error().Err(err).Msg("allocateIP failed")
+		return err
+	}
+	return nil
+}
+
+func deAllocateIP(ip string) error {
+	cmd := exec.Command("ifconfig", "lo0", ip, "-alias")
+	if err := cmd.Run(); err != nil {
+		mainLog.Error().Err(err).Msg("deAllocateIP failed")
+		return err
+	}
+	return nil
+}
+
 // set the dns server for the provided network interface
 func setDNS(iface *net.Interface, nameservers []string) error {
 	r, err := dns.NewOSConfigurator(logf, iface.Name)
diff --git a/cmd/ctrld/os_others.go b/cmd/ctrld/os_others.go
index e9f9d61..3807bcc 100644
--- a/cmd/ctrld/os_others.go
+++ b/cmd/ctrld/os_others.go
@@ -1,4 +1,4 @@
-//go:build !linux && !darwin
+//go:build !linux && !darwin && !freebsd
 
 package main