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validate-mtu, nexthop and tun address config

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This commit is contained in:
Maycon Santos
2024-05-13 11:32:29 +02:00
parent b0b755b08b
commit 6fe247ec07
4 changed files with 18 additions and 4 deletions
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6
client/internal/routemanager/client.go
View File

@@ -261,6 +261,12 @@ func (c *clientNetwork) recalculateRouteAndUpdatePeerAndSystem() error {
return fmt.Errorf("remove route from peer: %v", err)
}
} else {
if c.network == netip.MustParsePrefix("0.0.0.0/0") {
s, err := c.statusRecorder.GetPeer(c.routes[chosen].Peer)
if err == nil && s.IP != "" {
exitIP = netip.MustParseAddr(s.IP)
}
}
// otherwise add the route to the system
if err := addVPNRoute(c.network, c.getAsInterface()); err != nil {
return fmt.Errorf("route %s couldn't be added for peer %s, err: %v",

9
client/internal/routemanager/systemops.go
View File

@@ -29,6 +29,7 @@ var ErrRouteNotFound = errors.New("route not found")
var ErrRouteNotAllowed = errors.New("route not allowed")
var tunIP netip.Addr
var exitIP netip.Addr
// TODO: fix: for default our wg address now appears as the default gw
func addRouteForCurrentDefaultGateway(prefix netip.Prefix) error {
@@ -198,10 +199,14 @@ func addRouteToNonVPNIntf(prefix netip.Prefix, vpnIntf *iface.WGIface, initialNe
// in two /1 prefixes to avoid replacing the existing default route
func genericAddVPNRoute(prefix netip.Prefix, intf *net.Interface) error {
if prefix == defaultv4 {
if err := addToRouteTable(splitDefaultv4_1, tunIP, intf); err != nil {
ip := tunIP
if exitIP.IsValid() {
ip = exitIP
}
if err := addToRouteTable(splitDefaultv4_1, ip, intf); err != nil {
return err
}
if err := addToRouteTable(splitDefaultv4_2, tunIP, intf); err != nil {
if err := addToRouteTable(splitDefaultv4_2, ip, intf); err != nil {
if err2 := removeFromRouteTable(splitDefaultv4_1, netip.Addr{}, intf); err2 != nil {
log.Warnf("Failed to rollback route addition: %s", err2)
}

2
iface/iface.go
View File

@@ -13,7 +13,7 @@ import (
)
const (
DefaultMTU = 1280
DefaultMTU = 1420
DefaultWgPort = 51820
)

5
iface/tun_darwin.go
View File

@@ -4,6 +4,7 @@
package iface
import (
"net/netip"
"os/exec"
"github.com/pion/transport/v3"
@@ -119,7 +120,9 @@ func (t *tunDevice) Wrapper() *DeviceWrapper {
// assignAddr Adds IP address to the tunnel interface and network route based on the range provided
func (t *tunDevice) assignAddr() error {
cmd := exec.Command("ifconfig", t.name, "inet", t.address.IP.String(), t.address.IP.String())
np := netip.MustParseAddr(t.address.IP.String())
cmd := exec.Command("ifconfig", t.name, "inet", t.address.IP.String(), np.Prev().String())
if out, err := cmd.CombinedOutput(); err != nil {
log.Infof(`adding address command "%v" failed with output %s and error: `, cmd.String(), out)
return err