Move network to newt - handle --native mode

network/interface_windows.go

@@ -0,0 +1,63 @@
+//go:build windows
+
+package network
+
+import (
+	"fmt"
+	"net"
+	"net/netip"
+
+	"github.com/fosrl/newt/logger"
+	"golang.zx2c4.com/wireguard/windows/tunnel/winipcfg"
+)
+
+func configureWindows(interfaceName string, ip net.IP, ipNet *net.IPNet) error {
+	logger.Info("Configuring Windows interface: %s", interfaceName)
+
+	// Get the LUID for the interface
+	iface, err := net.InterfaceByName(interfaceName)
+	if err != nil {
+		return fmt.Errorf("failed to get interface %s: %v", interfaceName, err)
+	}
+
+	luid, err := winipcfg.LUIDFromIndex(uint32(iface.Index))
+	if err != nil {
+		return fmt.Errorf("failed to get LUID for interface %s: %v", interfaceName, err)
+	}
+
+	// Create the IP address prefix
+	maskBits, _ := ipNet.Mask.Size()
+
+	// Ensure we convert to the correct IP version (IPv4 vs IPv6)
+	var addr netip.Addr
+	if ip4 := ip.To4(); ip4 != nil {
+		// IPv4 address
+		addr, _ = netip.AddrFromSlice(ip4)
+	} else {
+		// IPv6 address
+		addr, _ = netip.AddrFromSlice(ip)
+	}
+	if !addr.IsValid() {
+		return fmt.Errorf("failed to convert IP address")
+	}
+	prefix := netip.PrefixFrom(addr, maskBits)
+
+	// Add the IP address to the interface
+	logger.Info("Adding IP address %s to interface %s", prefix.String(), interfaceName)
+	err = luid.AddIPAddress(prefix)
+	if err != nil {
+		return fmt.Errorf("failed to add IP address: %v", err)
+	}
+
+	// This was required when we were using the subprocess "netsh" command to bring up the interface.
+	// With the winipcfg library, the interface should already be up after adding the IP so we dont
+	// need this step anymore as far as I can tell.
+
+	// // Wait for the interface to be up and have the correct IP
+	// err = waitForInterfaceUp(interfaceName, ip, 30*time.Second)
+	// if err != nil {
+	// 	return fmt.Errorf("interface did not come up within timeout: %v", err)
+	// }
+
+	return nil
+}