Prevent JWT login token reuse

management/server/auth/session_test.go

@@ -0,0 +1,82 @@
+package auth
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	nbcache "github.com/netbirdio/netbird/management/server/cache"
+)
+
+func newTestSessionStore(t *testing.T) *SessionStore {
+	t.Helper()
+	cacheStore, err := nbcache.NewStore(context.Background(), time.Hour, time.Hour, 100)
+	require.NoError(t, err)
+	return NewSessionStore(cacheStore)
+}
+
+func TestSessionStore_FirstRegisterSucceeds(t *testing.T) {
+	s := newTestSessionStore(t)
+	ctx := context.Background()
+
+	require.NoError(t, s.RegisterToken(ctx, "token", time.Now().Add(time.Hour)))
+}
+
+func TestSessionStore_RegisterSameTokenTwiceIsRejected(t *testing.T) {
+	s := newTestSessionStore(t)
+	ctx := context.Background()
+	token := "token"
+	exp := time.Now().Add(time.Hour)
+
+	require.NoError(t, s.RegisterToken(ctx, token, exp))
+
+	err := s.RegisterToken(ctx, token, exp)
+	require.Error(t, err)
+	assert.ErrorIs(t, err, ErrTokenAlreadyUsed)
+}
+
+func TestSessionStore_RegisterDifferentTokensAreIndependent(t *testing.T) {
+	s := newTestSessionStore(t)
+	ctx := context.Background()
+	exp := time.Now().Add(time.Hour)
+
+	require.NoError(t, s.RegisterToken(ctx, "tokenA", exp))
+	require.NoError(t, s.RegisterToken(ctx, "tokenB", exp))
+}
+
+func TestSessionStore_RegisterWithPastExpiryIsRejected(t *testing.T) {
+	s := newTestSessionStore(t)
+	ctx := context.Background()
+	token := "token"
+
+	err := s.RegisterToken(ctx, token, time.Now().Add(-time.Second))
+	require.Error(t, err)
+	assert.ErrorIs(t, err, ErrTokenExpired)
+}
+
+func TestSessionStore_EntryEvictsAtTTLAndAllowsReRegistration(t *testing.T) {
+	s := newTestSessionStore(t)
+	ctx := context.Background()
+	token := "token"
+
+	require.NoError(t, s.RegisterToken(ctx, token, time.Now().Add(50*time.Millisecond)))
+
+	err := s.RegisterToken(ctx, token, time.Now().Add(50*time.Millisecond))
+	assert.ErrorIs(t, err, ErrTokenAlreadyUsed)
+
+	time.Sleep(120 * time.Millisecond)
+
+	require.NoError(t, s.RegisterToken(ctx, token, time.Now().Add(time.Hour)))
+}
+
+func TestHashToken_StableAndDoesNotLeak(t *testing.T) {
+	a := hashToken("tokenA")
+	b := hashToken("tokenB")
+	assert.Equal(t, a, hashToken("tokenA"), "hash must be deterministic")
+	assert.NotEqual(t, a, b, "different tokens must hash differently")
+	assert.Len(t, a, 64, "sha256 hex must be 64 chars")
+	assert.NotContains(t, a, "tokenA", "raw token must not appear in hash")
+}