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refactort: extract method to create Wireguard interface using kernel module
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729b16e599
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@ -5,5 +5,5 @@ package iface
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// Create Creates a new Wireguard interface, sets a given IP and brings it up.
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// Will reuse an existing one.
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func Create(iface string, address string) error {
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return CreateInUserspace(iface, address)
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return CreateWithUserspace(iface, address)
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}
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@ -26,8 +26,8 @@ func ConfigureWithKeyGen(iface string) (*wgtypes.Key, error) {
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return &key, Configure(iface, key.String())
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}
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// CreateInUserspace Creates a new Wireguard interface, using wireguard-go userspace implementation
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func CreateInUserspace(iface string, address string) error {
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// CreateWithUserspace Creates a new Wireguard interface, using wireguard-go userspace implementation
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func CreateWithUserspace(iface string, address string) error {
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var err error
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tunIface, err := tun.CreateTUN(iface, defaultMTU)
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if err != nil {
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@ -11,56 +11,62 @@ import (
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func Create(iface string, address string) error {
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if WireguardModExists() {
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attrs := netlink.NewLinkAttrs()
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attrs.Name = iface
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link := wgLink{
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attrs: &attrs,
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}
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log.Debugf("adding device: %s", iface)
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err := netlink.LinkAdd(&link)
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if os.IsExist(err) {
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log.Infof("interface %s already exists. Will reuse.", iface)
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} else if err != nil {
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return err
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}
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log.Debugf("adding address %s to interface: %s", address, iface)
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addr, _ := netlink.ParseAddr(address)
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err = netlink.AddrAdd(&link, addr)
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if os.IsExist(err) {
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log.Infof("interface %s already has the address: %s", iface, address)
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} else if err != nil {
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return err
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}
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err = assignAddr(address, iface)
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if err != nil {
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return err
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}
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// todo do a discovery
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log.Debugf("setting MTU: %s", iface)
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err = netlink.LinkSetMTU(&link, defaultMTU)
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if err != nil {
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log.Errorf("error setting MTU on interface: %s", iface)
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return err
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}
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log.Debugf("bringing up interface: %s", iface)
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err = netlink.LinkSetUp(&link)
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if err != nil {
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log.Errorf("error bringing up interface: %s", iface)
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return err
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}
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return nil
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return CreateWithKernel(iface, address)
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} else {
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return CreateInUserspace(iface, address)
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return CreateWithUserspace(iface, address)
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}
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}
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// CreateWithKernel Creates a new Wireguard interface using kernel Wireguard module.
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// Works for Linux and offers much better network performance
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func CreateWithKernel(iface string, address string) error {
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attrs := netlink.NewLinkAttrs()
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attrs.Name = iface
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link := wgLink{
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attrs: &attrs,
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}
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log.Debugf("adding device: %s", iface)
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err := netlink.LinkAdd(&link)
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if os.IsExist(err) {
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log.Infof("interface %s already exists. Will reuse.", iface)
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} else if err != nil {
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return err
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}
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log.Debugf("adding address %s to interface: %s", address, iface)
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addr, _ := netlink.ParseAddr(address)
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err = netlink.AddrAdd(&link, addr)
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if os.IsExist(err) {
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log.Infof("interface %s already has the address: %s", iface, address)
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} else if err != nil {
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return err
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}
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err = assignAddr(address, iface)
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if err != nil {
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return err
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}
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// todo do a discovery
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log.Debugf("setting MTU: %s", iface)
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err = netlink.LinkSetMTU(&link, defaultMTU)
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if err != nil {
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log.Errorf("error setting MTU on interface: %s", iface)
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return err
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}
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log.Debugf("bringing up interface: %s", iface)
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err = netlink.LinkSetUp(&link)
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if err != nil {
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log.Errorf("error bringing up interface: %s", iface)
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return err
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}
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return nil
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}
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// assignAddr Adds IP address to the tunnel interface
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func assignAddr(address, name string) error {
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var err error
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