mirror of
https://github.com/netbirdio/netbird.git
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b64f5ffcb4
Small code cleaning in the iface package. These changes necessary to get a clean code in case if we involve more platforms. The OS related functions has been distributed into separate files and it has been mixed with not OS related logic. The goal is to get a clear picture of the layer between WireGuard and business logic.
112 lines
3.5 KiB
Go
112 lines
3.5 KiB
Go
package routemanager
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import (
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"fmt"
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"github.com/netbirdio/netbird/iface"
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"github.com/stretchr/testify/require"
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"net"
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"net/netip"
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"testing"
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)
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func TestAddRemoveRoutes(t *testing.T) {
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testCases := []struct {
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name string
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prefix netip.Prefix
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shouldRouteToWireguard bool
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shouldBeRemoved bool
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}{
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{
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name: "Should Add And Remove Route",
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prefix: netip.MustParsePrefix("100.66.120.0/24"),
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shouldRouteToWireguard: true,
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shouldBeRemoved: true,
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},
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{
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name: "Should Not Add Or Remove Route",
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prefix: netip.MustParsePrefix("127.0.0.1/32"),
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shouldRouteToWireguard: false,
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shouldBeRemoved: false,
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},
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}
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for n, testCase := range testCases {
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t.Run(testCase.name, func(t *testing.T) {
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wgInterface, err := iface.NewWGIFace(fmt.Sprintf("utun53%d", n), "100.65.75.2/24", iface.DefaultMTU)
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require.NoError(t, err, "should create testing WGIface interface")
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defer wgInterface.Close()
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err = wgInterface.Create()
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require.NoError(t, err, "should create testing wireguard interface")
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err = addToRouteTableIfNoExists(testCase.prefix, wgInterface.Address().IP.String())
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require.NoError(t, err, "should not return err")
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prefixGateway, err := getExistingRIBRouteGateway(testCase.prefix)
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require.NoError(t, err, "should not return err")
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if testCase.shouldRouteToWireguard {
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require.Equal(t, wgInterface.Address().IP.String(), prefixGateway.String(), "route should point to wireguard interface IP")
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} else {
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require.NotEqual(t, wgInterface.Address().IP.String(), prefixGateway.String(), "route should point to a different interface")
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}
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err = removeFromRouteTableIfNonSystem(testCase.prefix, wgInterface.Address().IP.String())
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require.NoError(t, err, "should not return err")
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prefixGateway, err = getExistingRIBRouteGateway(testCase.prefix)
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require.NoError(t, err, "should not return err")
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internetGateway, err := getExistingRIBRouteGateway(netip.MustParsePrefix("0.0.0.0/0"))
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require.NoError(t, err)
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if testCase.shouldBeRemoved {
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require.Equal(t, internetGateway, prefixGateway, "route should be pointing to default internet gateway")
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} else {
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require.NotEqual(t, internetGateway, prefixGateway, "route should be pointing to a different gateway than the internet gateway")
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}
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})
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}
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}
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func TestGetExistingRIBRouteGateway(t *testing.T) {
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gateway, err := getExistingRIBRouteGateway(netip.MustParsePrefix("0.0.0.0/0"))
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if err != nil {
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t.Fatal("shouldn't return error when fetching the gateway: ", err)
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}
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if gateway == nil {
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t.Fatal("should return a gateway")
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}
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addresses, err := net.InterfaceAddrs()
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if err != nil {
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t.Fatal("shouldn't return error when fetching interface addresses: ", err)
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}
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var testingIP string
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var testingPrefix netip.Prefix
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for _, address := range addresses {
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if address.Network() != "ip+net" {
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continue
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}
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prefix := netip.MustParsePrefix(address.String())
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if !prefix.Addr().IsLoopback() && prefix.Addr().Is4() {
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testingIP = prefix.Addr().String()
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testingPrefix = prefix.Masked()
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break
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}
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}
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localIP, err := getExistingRIBRouteGateway(testingPrefix)
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if err != nil {
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t.Fatal("shouldn't return error: ", err)
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}
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if localIP == nil {
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t.Fatal("should return a gateway for local network")
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}
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if localIP.String() == gateway.String() {
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t.Fatal("local ip should not match with gateway IP")
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}
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if localIP.String() != testingIP {
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t.Fatalf("local ip should match with testing IP: want %s got %s", testingIP, localIP.String())
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}
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}
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