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wgengine/router{win}: ignore broadcast routes added by Windows when removing routes.

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Signed-off-by: Maisem Ali <maisem@tailscale.com>
This commit is contained in:
Maisem Ali
2021-04-23 21:23:59 -07:00
committed by Maisem Ali
parent f6b7d08aea
commit 590792915a
4 changed files with 123 additions and 63 deletions
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49
wgengine/router/ifconfig_windows_test.go
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@@ -193,6 +193,14 @@ func TestDeltaNets(t *testing.T) {
}
}
func formatRouteData(rds []*winipcfg.RouteData) string {
var b strings.Builder
for _, rd := range rds {
b.WriteString(fmt.Sprintf("%+v", rd))
}
return b.String()
}
func equalRouteDatas(a, b []*winipcfg.RouteData) bool {
if len(a) != len(b) {
return false
@@ -205,6 +213,43 @@ func equalRouteDatas(a, b []*winipcfg.RouteData) bool {
return true
}
func TestFilterRoutes(t *testing.T) {
var h0 net.IP
in := []*winipcfg.RouteData{
// LinkLocal and Loopback routes.
{*ipnet4("169.254.0.0", 16), h0, 1},
{*ipnet4("169.254.255.255", 32), h0, 1},
{*ipnet4("127.0.0.0", 8), h0, 1},
{*ipnet4("127.255.255.255", 32), h0, 1},
// Local LAN routes.
{*ipnet4("192.168.0.0", 24), h0, 1},
{*ipnet4("192.168.0.255", 32), h0, 1},
{*ipnet4("192.168.1.0", 25), h0, 1},
{*ipnet4("192.168.1.127", 32), h0, 1},
// Some random other route.
{*ipnet4("192.168.2.23", 32), h0, 1},
// Our own tailscale address.
{*ipnet4("100.100.100.100", 32), h0, 1},
// Other tailscale addresses.
{*ipnet4("100.100.100.101", 32), h0, 1},
{*ipnet4("100.100.100.102", 32), h0, 1},
}
want := []*winipcfg.RouteData{
{*ipnet4("169.254.0.0", 16), h0, 1},
{*ipnet4("127.0.0.0", 8), h0, 1},
{*ipnet4("192.168.0.0", 24), h0, 1},
{*ipnet4("192.168.1.0", 25), h0, 1},
{*ipnet4("192.168.2.23", 32), h0, 1},
{*ipnet4("100.100.100.101", 32), h0, 1},
{*ipnet4("100.100.100.102", 32), h0, 1},
}
got := filterRoutes(in, mustCIDRs("100.100.100.100/32"))
if !equalRouteDatas(got, want) {
t.Errorf("\ngot: %v\n want: %v\n", formatRouteData(got), formatRouteData(want))
}
}
func TestDeltaRouteData(t *testing.T) {
var h0 net.IP
h1 := net.ParseIP("99.99.99.99")
@@ -232,9 +277,9 @@ func TestDeltaRouteData(t *testing.T) {
}
if !equalRouteDatas(add, wantAdd) {
t.Errorf("add:\n got: %v\n want: %v\n", add, wantAdd)
t.Errorf("add:\n got: %v\n want: %v\n", formatRouteData(add), formatRouteData(wantAdd))
}
if !equalRouteDatas(del, wantDel) {
t.Errorf("del:\n got: %v\n want: %v\n", del, wantDel)
t.Errorf("del:\n got: %v\n want: %v\n", formatRouteData(del), formatRouteData(wantDel))
}
}