Files
netbird/client/internal/peer/handshaker_pq_test.go
T
riccardom 2c2f684571 [client] pqkem: test the controller reoffer through the handshaker
The split-key test only checked the manager's decision, so a broken
handshaker branch would still pass. The capability test asserted while
holding the manager lock, which hangs instead of failing.
2026-10-21 08:44:13 +02:00

75 lines
2.6 KiB
Go

package peer
import (
"sync"
"testing"
log "github.com/sirupsen/logrus"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
relayClient "github.com/netbirdio/netbird/shared/relay/client"
signal "github.com/netbirdio/netbird/shared/signal/client"
sProto "github.com/netbirdio/netbird/shared/signal/proto"
)
// bootstrapPQ is a fakePQ whose controller decision is set by the test.
type bootstrapPQ struct {
fakePQ
bootstrap bool
}
func (b bootstrapPQ) ShouldSendBootstrapOffer(string) bool { return b.bootstrap }
// newControllerHandshaker builds a handshaker for the controller side of a peer pair and
// records the type of every signalling message it sends.
func newControllerHandshaker(t *testing.T, pq PQHandshaker) (*Handshaker, func() []sProto.Body_Type) {
t.Helper()
var mu sync.Mutex
var sent []sProto.Body_Type
client := &signal.MockClient{
ReadyFunc: func() bool { return true },
SendFunc: func(msg *sProto.Message) error {
mu.Lock()
defer mu.Unlock()
sent = append(sent, msg.GetBody().GetType())
return nil
},
}
key, err := wgtypes.GeneratePrivateKey()
require.NoError(t, err)
config := ConnConfig{Key: "aaaa", LocalKey: "bbbb", PQ: pq} // LocalKey > Key: controller
relay := &WorkerRelay{relayManager: &relayClient.Manager{}}
h := NewHandshaker(log.WithField("test", t.Name()), config, NewSignaler(client, key), nil, relay, nil)
return h, func() []sProto.Body_Type {
mu.Lock()
defer mu.Unlock()
return append([]sProto.Body_Type(nil), sent...)
}
}
// TestHandshaker_ControllerReoffersOnResponderOffer drives the responder-originated
// reconnect through the handshaker: when the KEM manager asks for a fresh bootstrap, the
// controller replies to the responder's KEM-less offer with its own offer and sends no
// answer, so the reconnect re-derives one PSK on both sides.
func TestHandshaker_ControllerReoffersOnResponderOffer(t *testing.T) {
h, sent := newControllerHandshaker(t, bootstrapPQ{bootstrap: true})
h.handleRemoteOffer(OfferAnswer{})
assert.Equal(t, []sProto.Body_Type{sProto.Body_OFFER}, sent(),
"the controller must reply with its own offer, not an answer")
}
// TestHandshaker_ControllerAnswersWhileExchangeInFlight keeps the glare protection: with
// the controller's own exchange in flight, the responder's offer gets a normal answer.
func TestHandshaker_ControllerAnswersWhileExchangeInFlight(t *testing.T) {
h, sent := newControllerHandshaker(t, bootstrapPQ{bootstrap: false})
h.handleRemoteOffer(OfferAnswer{})
assert.Equal(t, []sProto.Body_Type{sProto.Body_ANSWER}, sent(),
"with an exchange in flight the controller must answer normally")
}