nebula/control_test.go

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package nebula
import (
"net"
"reflect"
"testing"
"time"
"github.com/sirupsen/logrus"
"github.com/slackhq/nebula/cert"
"github.com/slackhq/nebula/iputil"
"github.com/slackhq/nebula/test"
"github.com/slackhq/nebula/udp"
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"github.com/stretchr/testify/assert"
)
func TestControl_GetHostInfoByVpnIp(t *testing.T) {
l := test.NewLogger()
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// Special care must be taken to re-use all objects provided to the hostmap and certificate in the expectedInfo object
// To properly ensure we are not exposing core memory to the caller
hm := newHostMap(l, &net.IPNet{})
hm.preferredRanges.Store(&[]*net.IPNet{})
remote1 := udp.NewAddr(net.ParseIP("0.0.0.100"), 4444)
remote2 := udp.NewAddr(net.ParseIP("1:2:3:4:5:6:7:8"), 4444)
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ipNet := net.IPNet{
IP: net.IPv4(1, 2, 3, 4),
Mask: net.IPMask{255, 255, 255, 0},
}
ipNet2 := net.IPNet{
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IP: net.ParseIP("1:2:3:4:5:6:7:8"),
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Mask: net.IPMask{255, 255, 255, 0},
}
crt := &cert.NebulaCertificate{
Details: cert.NebulaCertificateDetails{
Name: "test",
Ips: []*net.IPNet{&ipNet},
Subnets: []*net.IPNet{},
Groups: []string{"default-group"},
NotBefore: time.Unix(1, 0),
NotAfter: time.Unix(2, 0),
PublicKey: []byte{5, 6, 7, 8},
IsCA: false,
Issuer: "the-issuer",
InvertedGroups: map[string]struct{}{"default-group": {}},
},
Signature: []byte{1, 2, 1, 2, 1, 3},
}
remotes := NewRemoteList(nil)
remotes.unlockedPrependV4(0, NewIp4AndPort(remote1.IP, uint32(remote1.Port)))
remotes.unlockedPrependV6(0, NewIp6AndPort(remote2.IP, uint32(remote2.Port)))
hm.unlockedAddHostInfo(&HostInfo{
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remote: remote1,
remotes: remotes,
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ConnectionState: &ConnectionState{
peerCert: crt,
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},
remoteIndexId: 200,
localIndexId: 201,
vpnIp: iputil.Ip2VpnIp(ipNet.IP),
relayState: RelayState{
relays: map[iputil.VpnIp]struct{}{},
relayForByIp: map[iputil.VpnIp]*Relay{},
relayForByIdx: map[uint32]*Relay{},
},
}, &Interface{})
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hm.unlockedAddHostInfo(&HostInfo{
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remote: remote1,
remotes: remotes,
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ConnectionState: &ConnectionState{
peerCert: nil,
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},
remoteIndexId: 200,
localIndexId: 201,
vpnIp: iputil.Ip2VpnIp(ipNet2.IP),
relayState: RelayState{
relays: map[iputil.VpnIp]struct{}{},
relayForByIp: map[iputil.VpnIp]*Relay{},
relayForByIdx: map[uint32]*Relay{},
},
}, &Interface{})
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c := Control{
f: &Interface{
hostMap: hm,
},
l: logrus.New(),
}
thi := c.GetHostInfoByVpnIp(iputil.Ip2VpnIp(ipNet.IP), false)
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expectedInfo := ControlHostInfo{
VpnIp: net.IPv4(1, 2, 3, 4).To4(),
LocalIndex: 201,
RemoteIndex: 200,
RemoteAddrs: []*udp.Addr{remote2, remote1},
Cert: crt.Copy(),
MessageCounter: 0,
CurrentRemote: udp.NewAddr(net.ParseIP("0.0.0.100"), 4444),
CurrentRelaysToMe: []iputil.VpnIp{},
CurrentRelaysThroughMe: []iputil.VpnIp{},
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}
// Make sure we don't have any unexpected fields
assertFields(t, []string{"VpnIp", "LocalIndex", "RemoteIndex", "RemoteAddrs", "Cert", "MessageCounter", "CurrentRemote", "CurrentRelaysToMe", "CurrentRelaysThroughMe"}, thi)
test.AssertDeepCopyEqual(t, &expectedInfo, thi)
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// Make sure we don't panic if the host info doesn't have a cert yet
assert.NotPanics(t, func() {
thi = c.GetHostInfoByVpnIp(iputil.Ip2VpnIp(ipNet2.IP), false)
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})
}
func assertFields(t *testing.T, expected []string, actualStruct interface{}) {
val := reflect.ValueOf(actualStruct).Elem()
fields := make([]string, val.NumField())
for i := 0; i < val.NumField(); i++ {
fields[i] = val.Type().Field(i).Name
}
assert.Equal(t, expected, fields)
}