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|
package state
import (
"bytes"
"context"
"crypto"
"crypto/ed25519"
"crypto/rand"
"fmt"
"io"
"os"
"reflect"
"testing"
"time"
mocksClient "git.sigsum.org/log-go/internal/mocks/client"
mocksDB "git.sigsum.org/log-go/internal/mocks/db"
"git.sigsum.org/sigsum-go/pkg/hex"
"git.sigsum.org/sigsum-go/pkg/merkle"
"git.sigsum.org/sigsum-go/pkg/types"
"github.com/golang/mock/gomock"
)
// TestSigner implements the signer interface. It can be used to mock
// an Ed25519 signer that always return the same public key,
// signature, and error.
// NOTE: Code duplication with internal/node/secondary/endpoint_internal_test.go
type TestSigner struct {
PublicKey [ed25519.PublicKeySize]byte
Signature [ed25519.SignatureSize]byte
Error error
}
func (ts *TestSigner) Public() crypto.PublicKey {
return ed25519.PublicKey(ts.PublicKey[:])
}
func (ts *TestSigner) Sign(rand io.Reader, digest []byte, opts crypto.SignerOpts) ([]byte, error) {
return ts.Signature[:], ts.Error
}
func TestNewStateManagerSingle(t *testing.T) {
signerOk := &TestSigner{types.PublicKey{}, types.Signature{}, nil}
signerErr := &TestSigner{types.PublicKey{}, types.Signature{}, fmt.Errorf("err")}
for _, table := range []struct {
description string
signer crypto.Signer
thExp bool
thErr error
th types.TreeHead
secExp bool
wantErr bool
}{
{"invalid: signer failure", signerErr, false, nil, types.TreeHead{}, false, true},
{"valid", signerOk, true, nil, types.TreeHead{Timestamp: now(t)}, true, false},
} {
func() {
ctrl := gomock.NewController(t)
defer ctrl.Finish()
trillianClient := mocksDB.NewMockClient(ctrl)
if table.thExp {
trillianClient.EXPECT().GetTreeHead(gomock.Any()).Return(&table.th, table.thErr)
}
secondary := mocksClient.NewMockClient(ctrl)
if table.secExp {
secondary.EXPECT().Initiated().Return(false)
}
tmpFile, err := os.CreateTemp("", "sigsum-log-test-sth")
if err != nil {
t.Fatal(err)
}
defer os.Remove(tmpFile.Name())
sm, err := NewStateManagerSingle(trillianClient, table.signer, time.Duration(0), time.Duration(0), secondary, tmpFile)
if got, want := err != nil, table.description != "valid"; got != want {
t.Errorf("got error %v but wanted %v in test %q: %v", got, want, table.description, err)
}
if err != nil {
return
}
if got, want := sm.signedTreeHead.TreeSize, table.th.TreeSize; got != want {
t.Errorf("%q: got tree size %d but wanted %d", table.description, got, want)
}
if got, want := sm.signedTreeHead.RootHash[:], table.th.RootHash[:]; !bytes.Equal(got, want) {
t.Errorf("%q: got tree size %v but wanted %v", table.description, got, want)
}
if got, want := sm.signedTreeHead.Timestamp, table.th.Timestamp; got < want {
t.Errorf("%q: got timestamp %d but wanted at least %d", table.description, got, want)
}
if got := sm.cosignedTreeHead; got != nil {
t.Errorf("%q: got cosigned tree head but should have none", table.description)
}
}()
}
}
func TestToCosignTreeHead(t *testing.T) {
want := &types.SignedTreeHead{}
sm := StateManagerSingle{
signedTreeHead: want,
}
sth := sm.ToCosignTreeHead()
if got := sth; !reflect.DeepEqual(got, want) {
t.Errorf("got signed tree head\n\t%v\nbut wanted\n\t%v", got, want)
}
}
func TestCosignedTreeHead(t *testing.T) {
want := &types.CosignedTreeHead{
Cosignature: make([]types.Signature, 1),
KeyHash: make([]merkle.Hash, 1),
}
sm := StateManagerSingle{
cosignedTreeHead: want,
}
cth, err := sm.CosignedTreeHead(context.Background())
if err != nil {
t.Errorf("should not fail with error: %v", err)
return
}
if got := cth; !reflect.DeepEqual(got, want) {
t.Errorf("got cosigned tree head\n\t%v\nbut wanted\n\t%v", got, want)
}
sm.cosignedTreeHead = nil
cth, err = sm.CosignedTreeHead(context.Background())
if err == nil {
t.Errorf("should fail without a cosigned tree head")
return
}
}
func TestAddCosignature(t *testing.T) {
secret, public := mustKeyPair(t)
for _, table := range []struct {
desc string
signer crypto.Signer
vk types.PublicKey
wantErr bool
}{
{
desc: "invalid: wrong public key",
signer: secret,
vk: types.PublicKey{},
wantErr: true,
},
{
desc: "valid",
signer: secret,
vk: public,
},
} {
sm := &StateManagerSingle{
namespace: *merkle.HashFn(nil),
signedTreeHead: &types.SignedTreeHead{},
events: make(chan *event, 1),
}
defer close(sm.events)
sth := mustSign(t, table.signer, &sm.signedTreeHead.TreeHead, &sm.namespace)
ctx := context.Background()
err := sm.AddCosignature(ctx, &table.vk, &sth.Signature)
if got, want := err != nil, table.wantErr; got != want {
t.Errorf("got error %v but wanted %v in test %q: %v", got, want, table.desc, err)
}
if err != nil {
continue
}
ctx, cancel := context.WithTimeout(ctx, 50*time.Millisecond)
defer cancel()
if err := sm.AddCosignature(ctx, &table.vk, &sth.Signature); err == nil {
t.Errorf("expected full channel in test %q", table.desc)
}
if got, want := len(sm.events), 1; got != want {
t.Errorf("wanted %d cosignatures but got %d in test %q", want, got, table.desc)
}
}
}
func mustKeyPair(t *testing.T) (crypto.Signer, types.PublicKey) {
t.Helper()
vk, sk, err := ed25519.GenerateKey(rand.Reader)
if err != nil {
t.Fatal(err)
}
var pub types.PublicKey
copy(pub[:], vk[:])
return sk, pub
}
func mustSign(t *testing.T, s crypto.Signer, th *types.TreeHead, kh *merkle.Hash) *types.SignedTreeHead {
t.Helper()
sth, err := th.Sign(s, kh)
if err != nil {
t.Fatal(err)
}
return sth
}
func newHashBufferInc(t *testing.T) *merkle.Hash {
t.Helper()
var buf merkle.Hash
for i := 0; i < len(buf); i++ {
buf[i] = byte(i)
}
return &buf
}
func validConsistencyProof_5_10(t *testing.T) *types.ConsistencyProof {
t.Helper()
// # old tree head
// tree_size=5
// root_hash=c8e73a8c09e44c344d515eb717e248c5dbf12420908a6d29568197fae7751803
// # new tree head
// tree_size=10
// root_hash=2a40f11563b45522ca9eccf993c934238a8fbadcf7d7d65be3583ab2584838aa
r := bytes.NewReader([]byte("consistency_path=fadca95ab8ca34f17c5f3fa719183fe0e5c194a44c25324745388964a743ecce\nconsistency_path=6366fc0c20f9b8a8c089ed210191e401da6c995592eba78125f0ba0ba142ebaf\nconsistency_path=72b8d4f990b555a72d76fb8da075a65234519070cfa42e082026a8c686160349\nconsistency_path=d92714be792598ff55560298cd3ff099dfe5724646282578531c0d0063437c00\nconsistency_path=4b20d58bbae723755304fb179aef6d5f04d755a601884828c62c07929f6bd84a\n"))
var proof types.ConsistencyProof
if err := proof.FromASCII(r, 5, 10); err != nil {
t.Fatal(err)
}
return &proof
}
func hashFromString(t *testing.T, s string) (h merkle.Hash) {
b, err := hex.Deserialize(s)
if err != nil {
t.Fatal(err)
}
copy(h[:], b)
return h
}
func now(t *testing.T) uint64 {
t.Helper()
return uint64(time.Now().Unix())
}
|
