186 lines
7.1 KiB
Go
186 lines
7.1 KiB
Go
//go:build e2e_testing
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// +build e2e_testing
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package e2e
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import (
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"net"
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"testing"
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"time"
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"github.com/slackhq/nebula"
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"github.com/slackhq/nebula/e2e/router"
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"github.com/slackhq/nebula/header"
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"github.com/slackhq/nebula/iputil"
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"github.com/slackhq/nebula/udp"
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"github.com/stretchr/testify/assert"
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)
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func TestGoodHandshake(t *testing.T) {
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ca, _, caKey, _ := newTestCaCert(time.Now(), time.Now().Add(10*time.Minute), []*net.IPNet{}, []*net.IPNet{}, []string{})
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myControl, myVpnIp, myUdpAddr := newSimpleServer(ca, caKey, "me", net.IP{10, 0, 0, 1})
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theirControl, theirVpnIp, theirUdpAddr := newSimpleServer(ca, caKey, "them", net.IP{10, 0, 0, 2})
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// Put their info in our lighthouse
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myControl.InjectLightHouseAddr(theirVpnIp, theirUdpAddr)
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// Start the servers
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myControl.Start()
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theirControl.Start()
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t.Log("Send a udp packet through to begin standing up the tunnel, this should come out the other side")
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myControl.InjectTunUDPPacket(theirVpnIp, 80, 80, []byte("Hi from me"))
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t.Log("Have them consume my stage 0 packet. They have a tunnel now")
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theirControl.InjectUDPPacket(myControl.GetFromUDP(true))
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t.Log("Get their stage 1 packet so that we can play with it")
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stage1Packet := theirControl.GetFromUDP(true)
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t.Log("I consume a garbage packet with a proper nebula header for our tunnel")
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// this should log a statement and get ignored, allowing the real handshake packet to complete the tunnel
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badPacket := stage1Packet.Copy()
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badPacket.Data = badPacket.Data[:len(badPacket.Data)-header.Len]
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myControl.InjectUDPPacket(badPacket)
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t.Log("Have me consume their real stage 1 packet. I have a tunnel now")
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myControl.InjectUDPPacket(stage1Packet)
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t.Log("Wait until we see my cached packet come through")
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myControl.WaitForType(1, 0, theirControl)
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t.Log("Make sure our host infos are correct")
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assertHostInfoPair(t, myUdpAddr, theirUdpAddr, myVpnIp, theirVpnIp, myControl, theirControl)
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t.Log("Get that cached packet and make sure it looks right")
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myCachedPacket := theirControl.GetFromTun(true)
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assertUdpPacket(t, []byte("Hi from me"), myCachedPacket, myVpnIp, theirVpnIp, 80, 80)
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t.Log("Do a bidirectional tunnel test")
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assertTunnel(t, myVpnIp, theirVpnIp, myControl, theirControl, router.NewR(myControl, theirControl))
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myControl.Stop()
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theirControl.Stop()
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//TODO: assert hostmaps
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}
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func TestWrongResponderHandshake(t *testing.T) {
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ca, _, caKey, _ := newTestCaCert(time.Now(), time.Now().Add(10*time.Minute), []*net.IPNet{}, []*net.IPNet{}, []string{})
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// The IPs here are chosen on purpose:
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// The current remote handling will sort by preference, public, and then lexically.
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// So we need them to have a higher address than evil (we could apply a preference though)
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myControl, myVpnIp, myUdpAddr := newSimpleServer(ca, caKey, "me", net.IP{10, 0, 0, 100})
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theirControl, theirVpnIp, theirUdpAddr := newSimpleServer(ca, caKey, "them", net.IP{10, 0, 0, 99})
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evilControl, evilVpnIp, evilUdpAddr := newSimpleServer(ca, caKey, "evil", net.IP{10, 0, 0, 2})
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// Add their real udp addr, which should be tried after evil.
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myControl.InjectLightHouseAddr(theirVpnIp, theirUdpAddr)
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// Put the evil udp addr in for their vpn Ip, this is a case of being lied to by the lighthouse.
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myControl.InjectLightHouseAddr(theirVpnIp, evilUdpAddr)
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// Build a router so we don't have to reason who gets which packet
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r := router.NewR(myControl, theirControl, evilControl)
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// Start the servers
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myControl.Start()
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theirControl.Start()
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evilControl.Start()
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t.Log("Start the handshake process, we will route until we see our cached packet get sent to them")
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myControl.InjectTunUDPPacket(theirVpnIp, 80, 80, []byte("Hi from me"))
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r.RouteForAllExitFunc(func(p *udp.Packet, c *nebula.Control) router.ExitType {
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h := &header.H{}
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err := h.Parse(p.Data)
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if err != nil {
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panic(err)
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}
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if p.ToIp.Equal(theirUdpAddr.IP) && p.ToPort == uint16(theirUdpAddr.Port) && h.Type == 1 {
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return router.RouteAndExit
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}
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return router.KeepRouting
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})
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//TODO: Assert pending hostmap - I should have a correct hostinfo for them now
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t.Log("My cached packet should be received by them")
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myCachedPacket := theirControl.GetFromTun(true)
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assertUdpPacket(t, []byte("Hi from me"), myCachedPacket, myVpnIp, theirVpnIp, 80, 80)
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t.Log("Test the tunnel with them")
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assertHostInfoPair(t, myUdpAddr, theirUdpAddr, myVpnIp, theirVpnIp, myControl, theirControl)
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assertTunnel(t, myVpnIp, theirVpnIp, myControl, theirControl, r)
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t.Log("Flush all packets from all controllers")
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r.FlushAll()
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t.Log("Ensure ensure I don't have any hostinfo artifacts from evil")
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assert.Nil(t, myControl.GetHostInfoByVpnIp(iputil.Ip2VpnIp(evilVpnIp), true), "My pending hostmap should not contain evil")
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assert.Nil(t, myControl.GetHostInfoByVpnIp(iputil.Ip2VpnIp(evilVpnIp), false), "My main hostmap should not contain evil")
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//NOTE: if evil lost the handshake race it may still have a tunnel since me would reject the handshake since the tunnel is complete
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//TODO: assert hostmaps for everyone
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t.Log("Success!")
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myControl.Stop()
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theirControl.Stop()
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}
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func Test_Case1_Stage1Race(t *testing.T) {
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ca, _, caKey, _ := newTestCaCert(time.Now(), time.Now().Add(10*time.Minute), []*net.IPNet{}, []*net.IPNet{}, []string{})
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myControl, myVpnIp, myUdpAddr := newSimpleServer(ca, caKey, "me ", net.IP{10, 0, 0, 1})
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theirControl, theirVpnIp, theirUdpAddr := newSimpleServer(ca, caKey, "them", net.IP{10, 0, 0, 2})
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// Put their info in our lighthouse and vice versa
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myControl.InjectLightHouseAddr(theirVpnIp, theirUdpAddr)
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theirControl.InjectLightHouseAddr(myVpnIp, myUdpAddr)
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// Build a router so we don't have to reason who gets which packet
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r := router.NewR(myControl, theirControl)
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// Start the servers
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myControl.Start()
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theirControl.Start()
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t.Log("Trigger a handshake to start on both me and them")
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myControl.InjectTunUDPPacket(theirVpnIp, 80, 80, []byte("Hi from me"))
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theirControl.InjectTunUDPPacket(myVpnIp, 80, 80, []byte("Hi from them"))
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t.Log("Get both stage 1 handshake packets")
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myHsForThem := myControl.GetFromUDP(true)
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theirHsForMe := theirControl.GetFromUDP(true)
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t.Log("Now inject both stage 1 handshake packets")
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myControl.InjectUDPPacket(theirHsForMe)
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theirControl.InjectUDPPacket(myHsForThem)
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//TODO: they should win, grab their index for me and make sure I use it in the end.
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t.Log("They should not have a stage 2 (won the race) but I should send one")
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theirControl.InjectUDPPacket(myControl.GetFromUDP(true))
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t.Log("Route for me until I send a message packet to them")
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myControl.WaitForType(1, 0, theirControl)
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t.Log("My cached packet should be received by them")
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myCachedPacket := theirControl.GetFromTun(true)
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assertUdpPacket(t, []byte("Hi from me"), myCachedPacket, myVpnIp, theirVpnIp, 80, 80)
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t.Log("Route for them until I send a message packet to me")
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theirControl.WaitForType(1, 0, myControl)
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t.Log("Their cached packet should be received by me")
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theirCachedPacket := myControl.GetFromTun(true)
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assertUdpPacket(t, []byte("Hi from them"), theirCachedPacket, theirVpnIp, myVpnIp, 80, 80)
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t.Log("Do a bidirectional tunnel test")
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assertTunnel(t, myVpnIp, theirVpnIp, myControl, theirControl, r)
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myControl.Stop()
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theirControl.Stop()
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//TODO: assert hostmaps
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}
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//TODO: add a test with many lies
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