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package nebula
import (
"context"
"crypto/ed25519"
"crypto/rand"
"net"
"testing"
"time"
"github.com/flynn/noise"
"github.com/slackhq/nebula/cert"
"github.com/slackhq/nebula/iputil"
"github.com/slackhq/nebula/test"
"github.com/slackhq/nebula/udp"
"github.com/stretchr/testify/assert"
)
var vpnIp iputil.VpnIp
func Test_NewConnectionManagerTest(t *testing.T) {
l := test.NewLogger()
//_, tuncidr, _ := net.ParseCIDR("1.1.1.1/24")
_, vpncidr, _ := net.ParseCIDR("172.1.1.1/24")
_, localrange, _ := net.ParseCIDR("10.1.1.1/24")
vpnIp = iputil.Ip2VpnIp(net.ParseIP("172.1.1.2"))
preferredRanges := []*net.IPNet{localrange}
// Very incomplete mock objects
hostMap := NewHostMap(l, "test", vpncidr, preferredRanges)
cs := &CertState{
rawCertificate: []byte{},
privateKey: []byte{},
certificate: &cert.NebulaCertificate{},
rawCertificateNoKey: []byte{},
}
lh := &LightHouse{l: l, atomicStaticList: make(map[iputil.VpnIp]struct{}), atomicLighthouses: make(map[iputil.VpnIp]struct{})}
ifce := &Interface{
hostMap: hostMap,
inside: &test.NoopTun{},
outside: &udp.Conn{},
certState: cs,
firewall: &Firewall{},
lightHouse: lh,
handshakeManager: NewHandshakeManager(l, vpncidr, preferredRanges, hostMap, lh, &udp.Conn{}, defaultHandshakeConfig),
l: l,
}
now := time.Now()
// Create manager
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
nc := newConnectionManager(ctx, l, ifce, 5, 10)
p := []byte("")
nb := make([]byte, 12, 12)
out := make([]byte, mtu)
nc.HandleMonitorTick(now, p, nb, out)
// Add an ip we have established a connection w/ to hostmap
hostinfo, _ := nc.hostMap.AddVpnIp(vpnIp, nil)
hostinfo.ConnectionState = &ConnectionState{
certState: cs,
H: &noise.HandshakeState{},
}
// We saw traffic out to vpnIp
nc.Out(vpnIp)
assert.NotContains(t, nc.pendingDeletion, vpnIp)
assert.Contains(t, nc.hostMap.Hosts, vpnIp)
// Move ahead 5s. Nothing should happen
next_tick := now.Add(5 * time.Second)
nc.HandleMonitorTick(next_tick, p, nb, out)
nc.HandleDeletionTick(next_tick)
// Move ahead 6s. We haven't heard back
next_tick = now.Add(6 * time.Second)
nc.HandleMonitorTick(next_tick, p, nb, out)
nc.HandleDeletionTick(next_tick)
// This host should now be up for deletion
assert.Contains(t, nc.pendingDeletion, vpnIp)
assert.Contains(t, nc.hostMap.Hosts, vpnIp)
// Move ahead some more
next_tick = now.Add(45 * time.Second)
nc.HandleMonitorTick(next_tick, p, nb, out)
nc.HandleDeletionTick(next_tick)
// The host should be evicted
assert.NotContains(t, nc.pendingDeletion, vpnIp)
assert.NotContains(t, nc.hostMap.Hosts, vpnIp)
}
func Test_NewConnectionManagerTest2(t *testing.T) {
l := test.NewLogger()
//_, tuncidr, _ := net.ParseCIDR("1.1.1.1/24")
_, vpncidr, _ := net.ParseCIDR("172.1.1.1/24")
_, localrange, _ := net.ParseCIDR("10.1.1.1/24")
preferredRanges := []*net.IPNet{localrange}
// Very incomplete mock objects
hostMap := NewHostMap(l, "test", vpncidr, preferredRanges)
cs := &CertState{
rawCertificate: []byte{},
privateKey: []byte{},
certificate: &cert.NebulaCertificate{},
rawCertificateNoKey: []byte{},
}
lh := &LightHouse{l: l, atomicStaticList: make(map[iputil.VpnIp]struct{}), atomicLighthouses: make(map[iputil.VpnIp]struct{})}
ifce := &Interface{
hostMap: hostMap,
inside: &test.NoopTun{},
outside: &udp.Conn{},
certState: cs,
firewall: &Firewall{},
lightHouse: lh,
handshakeManager: NewHandshakeManager(l, vpncidr, preferredRanges, hostMap, lh, &udp.Conn{}, defaultHandshakeConfig),
l: l,
}
now := time.Now()
// Create manager
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
nc := newConnectionManager(ctx, l, ifce, 5, 10)
p := []byte("")
nb := make([]byte, 12, 12)
out := make([]byte, mtu)
nc.HandleMonitorTick(now, p, nb, out)
// Add an ip we have established a connection w/ to hostmap
hostinfo, _ := nc.hostMap.AddVpnIp(vpnIp, nil)
hostinfo.ConnectionState = &ConnectionState{
certState: cs,
H: &noise.HandshakeState{},
}
// We saw traffic out to vpnIp
nc.Out(vpnIp)
assert.NotContains(t, nc.pendingDeletion, vpnIp)
assert.Contains(t, nc.hostMap.Hosts, vpnIp)
// Move ahead 5s. Nothing should happen
next_tick := now.Add(5 * time.Second)
nc.HandleMonitorTick(next_tick, p, nb, out)
nc.HandleDeletionTick(next_tick)
// Move ahead 6s. We haven't heard back
next_tick = now.Add(6 * time.Second)
nc.HandleMonitorTick(next_tick, p, nb, out)
nc.HandleDeletionTick(next_tick)
// This host should now be up for deletion
assert.Contains(t, nc.pendingDeletion, vpnIp)
assert.Contains(t, nc.hostMap.Hosts, vpnIp)
// We heard back this time
nc.In(vpnIp)
// Move ahead some more
next_tick = now.Add(45 * time.Second)
nc.HandleMonitorTick(next_tick, p, nb, out)
nc.HandleDeletionTick(next_tick)
// The host should be evicted
assert.NotContains(t, nc.pendingDeletion, vpnIp)
assert.Contains(t, nc.hostMap.Hosts, vpnIp)
}
// Check if we can disconnect the peer.
// Validate if the peer's certificate is invalid (expired, etc.)
// Disconnect only if disconnectInvalid: true is set.
func Test_NewConnectionManagerTest_DisconnectInvalid(t *testing.T) {
now := time.Now()
l := test.NewLogger()
ipNet := net.IPNet{
IP: net.IPv4(172, 1, 1, 2),
Mask: net.IPMask{255, 255, 255, 0},
}
_, vpncidr, _ := net.ParseCIDR("172.1.1.1/24")
_, localrange, _ := net.ParseCIDR("10.1.1.1/24")
preferredRanges := []*net.IPNet{localrange}
hostMap := NewHostMap(l, "test", vpncidr, preferredRanges)
// Generate keys for CA and peer's cert.
pubCA, privCA, _ := ed25519.GenerateKey(rand.Reader)
caCert := cert.NebulaCertificate{
Details: cert.NebulaCertificateDetails{
Name: "ca",
NotBefore: now,
NotAfter: now.Add(1 * time.Hour),
IsCA: true,
PublicKey: pubCA,
},
}
caCert.Sign(privCA)
ncp := &cert.NebulaCAPool{
CAs: cert.NewCAPool().CAs,
}
ncp.CAs["ca"] = &caCert
pubCrt, _, _ := ed25519.GenerateKey(rand.Reader)
peerCert := cert.NebulaCertificate{
Details: cert.NebulaCertificateDetails{
Name: "host",
Ips: []*net.IPNet{&ipNet},
Subnets: []*net.IPNet{},
NotBefore: now,
NotAfter: now.Add(60 * time.Second),
PublicKey: pubCrt,
IsCA: false,
Issuer: "ca",
},
}
peerCert.Sign(privCA)
cs := &CertState{
rawCertificate: []byte{},
privateKey: []byte{},
certificate: &cert.NebulaCertificate{},
rawCertificateNoKey: []byte{},
}
lh := &LightHouse{l: l, atomicStaticList: make(map[iputil.VpnIp]struct{}), atomicLighthouses: make(map[iputil.VpnIp]struct{})}
ifce := &Interface{
hostMap: hostMap,
inside: &test.NoopTun{},
outside: &udp.Conn{},
certState: cs,
firewall: &Firewall{},
lightHouse: lh,
handshakeManager: NewHandshakeManager(l, vpncidr, preferredRanges, hostMap, lh, &udp.Conn{}, defaultHandshakeConfig),
l: l,
disconnectInvalid: true,
caPool: ncp,
}
// Create manager
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
nc := newConnectionManager(ctx, l, ifce, 5, 10)
ifce.connectionManager = nc
hostinfo, _ := nc.hostMap.AddVpnIp(vpnIp, nil)
hostinfo.ConnectionState = &ConnectionState{
certState: cs,
peerCert: &peerCert,
H: &noise.HandshakeState{},
}
// Move ahead 45s.
// Check if to disconnect with invalid certificate.
// Should be alive.
nextTick := now.Add(45 * time.Second)
destroyed := nc.handleInvalidCertificate(nextTick, vpnIp, hostinfo)
assert.False(t, destroyed)
// Move ahead 61s.
// Check if to disconnect with invalid certificate.
// Should be disconnected.
nextTick = now.Add(61 * time.Second)
destroyed = nc.handleInvalidCertificate(nextTick, vpnIp, hostinfo)
assert.True(t, destroyed)
}
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