func testFundingTransactionLockedOutputs(miner *rpctest.Harness,
wallet *lnwallet.LightningWallet, t *testing.T) {
t.Log("Running funding txn locked outputs test")
// Create a single channel asking for 16 BTC total.
fundingAmount := btcutil.Amount(8 * 1e8)
_, err := wallet.InitChannelReservation(fundingAmount, fundingAmount,
testPub, bobAddr, numReqConfs, 4)
if err != nil {
t.Fatalf("unable to initialize funding reservation 1: %v", err)
}
// Now attempt to reserve funds for another channel, this time
// requesting 900 BTC. We only have around 64BTC worth of outpoints
// that aren't locked, so this should fail.
amt := btcutil.Amount(900 * 1e8)
failedReservation, err := wallet.InitChannelReservation(amt, amt,
testPub, bobAddr, numReqConfs, 4)
if err == nil {
t.Fatalf("not error returned, should fail on coin selection")
}
if _, ok := err.(*lnwallet.ErrInsufficientFunds); !ok {
t.Fatalf("error not coinselect error: %v", err)
}
if failedReservation != nil {
t.Fatalf("reservation should be nil")
}
}
func TestOutputSplittingOversizeTx(t *testing.T) {
tearDown, pool, _ := TstCreatePoolAndTxStore(t)
defer tearDown()
requestAmount := btcutil.Amount(5)
bigInput := int64(3)
smallInput := int64(2)
request := TstNewOutputRequest(
t, 1, "34eVkREKgvvGASZW7hkgE2uNc1yycntMK6", requestAmount, pool.Manager().ChainParams())
seriesID, eligible := TstCreateCreditsOnNewSeries(t, pool, []int64{smallInput, bigInput})
changeStart := TstNewChangeAddress(t, pool, seriesID, 0)
w := newWithdrawal(0, []OutputRequest{request}, eligible, *changeStart)
w.txOptions = func(tx *withdrawalTx) {
tx.calculateFee = TstConstantFee(0)
tx.calculateSize = func() int {
// Trigger an output split right after the second input is added.
if len(tx.inputs) == 2 {
return txMaxSize + 1
}
return txMaxSize - 1
}
}
if err := w.fulfillRequests(); err != nil {
t.Fatal(err)
}
if len(w.transactions) != 2 {
t.Fatalf("Wrong number of finalized transactions; got %d, want 2", len(w.transactions))
}
tx1 := w.transactions[0]
if len(tx1.outputs) != 1 {
t.Fatalf("Wrong number of outputs on tx1; got %d, want 1", len(tx1.outputs))
}
if tx1.outputs[0].amount != btcutil.Amount(bigInput) {
t.Fatalf("Wrong amount for output in tx1; got %d, want %d", tx1.outputs[0].amount,
bigInput)
}
tx2 := w.transactions[1]
if len(tx2.outputs) != 1 {
t.Fatalf("Wrong number of outputs on tx2; got %d, want 1", len(tx2.outputs))
}
if tx2.outputs[0].amount != btcutil.Amount(smallInput) {
t.Fatalf("Wrong amount for output in tx2; got %d, want %d", tx2.outputs[0].amount,
smallInput)
}
if len(w.status.outputs) != 1 {
t.Fatalf("Wrong number of output statuses; got %d, want 1", len(w.status.outputs))
}
status := w.status.outputs[request.outBailmentID()].status
if status != statusSplit {
t.Fatalf("Wrong output status; got '%s', want '%s'", status, statusSplit)
}
}
func createTestChannelState(cdb *DB) (*OpenChannel, error) {
addr, err := btcutil.NewAddressPubKey(pubKey.SerializeCompressed(), netParams)
if err != nil {
return nil, err
}
script, err := txscript.MultiSigScript([]*btcutil.AddressPubKey{addr, addr}, 2)
if err != nil {
return nil, err
}
// Simulate 1000 channel updates via progression of the elkrem
// revocation trees.
sender := elkrem.NewElkremSender(key)
receiver := &elkrem.ElkremReceiver{}
for i := 0; i < 1000; i++ {
preImage, err := sender.AtIndex(uint64(i))
if err != nil {
return nil, err
}
if receiver.AddNext(preImage); err != nil {
return nil, err
}
}
return &OpenChannel{
IdentityPub: pubKey,
ChanID: id,
MinFeePerKb: btcutil.Amount(5000),
OurCommitKey: privKey.PubKey(),
TheirCommitKey: pubKey,
Capacity: btcutil.Amount(10000),
OurBalance: btcutil.Amount(3000),
TheirBalance: btcutil.Amount(9000),
OurCommitTx: testTx,
OurCommitSig: bytes.Repeat([]byte{1}, 71),
LocalElkrem: sender,
RemoteElkrem: receiver,
FundingOutpoint: testOutpoint,
OurMultiSigKey: privKey.PubKey(),
TheirMultiSigKey: privKey.PubKey(),
FundingWitnessScript: script,
TheirCurrentRevocation: privKey.PubKey(),
TheirCurrentRevocationHash: key,
OurDeliveryScript: script,
TheirDeliveryScript: script,
LocalCsvDelay: 5,
RemoteCsvDelay: 9,
NumUpdates: 0,
TotalSatoshisSent: 8,
TotalSatoshisReceived: 2,
TotalNetFees: 9,
CreationTime: time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC),
Db: cdb,
}, nil
}
// OpenChannel attempts to open a singly funded channel specified in the
// request to a remote peer.
func (r *rpcServer) OpenChannel(in *lnrpc.OpenChannelRequest,
updateStream lnrpc.Lightning_OpenChannelServer) error {
rpcsLog.Tracef("[openchannel] request to peerid(%v) "+
"allocation(us=%v, them=%v) numconfs=%v", in.TargetPeerId,
in.LocalFundingAmount, in.RemoteFundingAmount, in.NumConfs)
localFundingAmt := btcutil.Amount(in.LocalFundingAmount)
remoteFundingAmt := btcutil.Amount(in.RemoteFundingAmount)
nodepubKey, err := btcec.ParsePubKey(in.NodePubkey, btcec.S256())
if err != nil {
return err
}
updateChan, errChan := r.server.OpenChannel(in.TargetPeerId,
nodepubKey, localFundingAmt, remoteFundingAmt, in.NumConfs)
var outpoint wire.OutPoint
out:
for {
select {
case err := <-errChan:
rpcsLog.Errorf("unable to open channel to "+
"identityPub(%x) nor peerID(%v): %v",
nodepubKey, in.TargetPeerId, err)
return err
case fundingUpdate := <-updateChan:
rpcsLog.Tracef("[openchannel] sending update: %v",
fundingUpdate)
if err := updateStream.Send(fundingUpdate); err != nil {
return err
}
// If a final channel open update is being sent, then
// we can break out of our recv loop as we no longer
// need to process any further updates.
switch update := fundingUpdate.Update.(type) {
case *lnrpc.OpenStatusUpdate_ChanOpen:
chanPoint := update.ChanOpen.ChannelPoint
h, _ := wire.NewShaHash(chanPoint.FundingTxid)
outpoint = wire.OutPoint{
Hash: *h,
Index: chanPoint.OutputIndex,
}
break out
}
case <-r.quit:
return nil
}
}
rpcsLog.Tracef("[openchannel] success peerid(%v), ChannelPoint(%v)",
in.TargetPeerId, outpoint)
return nil
}
func TestWithdrawalTxInputTotal(t *testing.T) {
tearDown, pool, _ := TstCreatePoolAndTxStore(t)
defer tearDown()
tx := createWithdrawalTx(t, pool, []int64{5}, []int64{})
if tx.inputTotal() != btcutil.Amount(5) {
t.Fatalf("Wrong total output; got %v, want %v", tx.outputTotal(), btcutil.Amount(5))
}
}
func TestStoreTransactionsWithChangeOutput(t *testing.T) {
tearDown, pool, store := TstCreatePoolAndTxStore(t)
defer tearDown()
wtx := createWithdrawalTxWithStoreCredits(t, store, pool, []int64{5e6}, []int64{1e6, 1e6})
wtx.changeOutput = wire.NewTxOut(int64(3e6), []byte{})
msgtx := wtx.toMsgTx()
tx := &changeAwareTx{MsgTx: msgtx, changeIdx: int32(len(msgtx.TxOut) - 1)}
if err := storeTransactions(store, []*changeAwareTx{tx}); err != nil {
t.Fatal(err)
}
sha := msgtx.TxSha()
txDetails, err := store.TxDetails(&sha)
if err != nil {
t.Fatal(err)
}
if txDetails == nil {
t.Fatal("The new tx doesn't seem to have been stored")
}
storedTx := txDetails.TxRecord.MsgTx
outputTotal := int64(0)
for i, txOut := range storedTx.TxOut {
if int32(i) != tx.changeIdx {
outputTotal += txOut.Value
}
}
if outputTotal != int64(2e6) {
t.Fatalf("Unexpected output amount; got %v, want %v", outputTotal, int64(2e6))
}
inputTotal := btcutil.Amount(0)
for _, debit := range txDetails.Debits {
inputTotal += debit.Amount
}
if inputTotal != btcutil.Amount(5e6) {
t.Fatalf("Unexpected input amount; got %v, want %v", inputTotal, btcutil.Amount(5e6))
}
credits, err := store.UnspentOutputs()
if err != nil {
t.Fatal(err)
}
if len(credits) != 1 {
t.Fatalf("Unexpected number of credits in txstore; got %d, want 1", len(credits))
}
changeOutpoint := wire.OutPoint{Hash: sha, Index: uint32(tx.changeIdx)}
if credits[0].OutPoint != changeOutpoint {
t.Fatalf("Credit's outpoint (%v) doesn't match the one from change output (%v)",
credits[0].OutPoint, changeOutpoint)
}
}
func TestWithdrawalTxOutputTotal(t *testing.T) {
tearDown, pool, _ := TstCreatePoolAndTxStore(t)
defer tearDown()
tx := createWithdrawalTx(t, pool, []int64{}, []int64{4})
tx.changeOutput = wire.NewTxOut(int64(1), []byte{})
if tx.outputTotal() != btcutil.Amount(4) {
t.Fatalf("Wrong total output; got %v, want %v", tx.outputTotal(), btcutil.Amount(4))
}
}
// TestRollbackLastOutputWhenNewOutputAdded checks that we roll back the last
// output if a tx becomes too big right after we add a new output to it.
func TestRollbackLastOutputWhenNewOutputAdded(t *testing.T) {
tearDown, pool, _ := TstCreatePoolAndTxStore(t)
defer tearDown()
net := pool.Manager().ChainParams()
series, eligible := TstCreateCreditsOnNewSeries(t, pool, []int64{5, 5})
requests := []OutputRequest{
// This is ordered by bailment ID
TstNewOutputRequest(t, 1, "34eVkREKgvvGASZW7hkgE2uNc1yycntMK6", 1, net),
TstNewOutputRequest(t, 2, "3PbExiaztsSYgh6zeMswC49hLUwhTQ86XG", 2, net),
}
changeStart := TstNewChangeAddress(t, pool, series, 0)
w := newWithdrawal(0, requests, eligible, *changeStart)
w.txOptions = func(tx *withdrawalTx) {
tx.calculateFee = TstConstantFee(0)
tx.calculateSize = func() int {
// Trigger an output split right after the second output is added.
if len(tx.outputs) > 1 {
return txMaxSize + 1
}
return txMaxSize - 1
}
}
if err := w.fulfillRequests(); err != nil {
t.Fatal("Unexpected error:", err)
}
// At this point we should have two finalized transactions.
if len(w.transactions) != 2 {
t.Fatalf("Wrong number of finalized transactions; got %d, want 2", len(w.transactions))
}
// First tx should have one output with 1 and one change output with 4
// satoshis.
firstTx := w.transactions[0]
req1 := requests[0]
checkTxOutputs(t, firstTx,
[]*withdrawalTxOut{&withdrawalTxOut{request: req1, amount: req1.Amount}})
checkTxChangeAmount(t, firstTx, btcutil.Amount(4))
// Second tx should have one output with 2 and one changeoutput with 3 satoshis.
secondTx := w.transactions[1]
req2 := requests[1]
checkTxOutputs(t, secondTx,
[]*withdrawalTxOut{&withdrawalTxOut{request: req2, amount: req2.Amount}})
checkTxChangeAmount(t, secondTx, btcutil.Amount(3))
}
// testChannelBalance creates a new channel between Alice and Bob, then
// checks channel balance to be equal amount specified while creation of channel.
func testChannelBalance(net *networkHarness, t *harnessTest) {
timeout := time.Duration(time.Second * 5)
// Open a channel with 0.5 BTC between Alice and Bob, ensuring the
// channel has been opened properly.
amount := btcutil.Amount(btcutil.SatoshiPerBitcoin / 2)
ctx, _ := context.WithTimeout(context.Background(), timeout)
// Creates a helper closure to be used below which asserts the proper
// response to a channel balance RPC.
checkChannelBalance := func(node lnrpc.LightningClient,
amount btcutil.Amount) {
response, err := node.ChannelBalance(ctx, &lnrpc.ChannelBalanceRequest{})
if err != nil {
t.Fatalf("unable to get channel balance: %v", err)
}
balance := btcutil.Amount(response.Balance)
if balance != amount {
t.Fatalf("channel balance wrong: %v != %v", balance,
amount)
}
}
chanPoint := openChannelAndAssert(t, net, ctx, net.Alice, net.Bob,
amount)
// As this is a single funder channel, Alice's balance should be
// exactly 0.5 BTC since now state transitions have taken place yet.
checkChannelBalance(net.Alice, amount)
// Since we only explicitly wait for Alice's channel open notification,
// Bob might not yet have updated his internal state in response to
// Alice's channel open proof. So we sleep here for a second to let Bob
// catch up.
// TODO(roasbeef): Bob should also watch for the channel on-chain after
// the changes to restrict the number of pending channels are in.
time.Sleep(time.Second)
// Ensure Bob currently has no available balance within the channel.
checkChannelBalance(net.Bob, 0)
// Finally close the channel between Alice and Bob, asserting that the
// channel has been properly closed on-chain.
ctx, _ = context.WithTimeout(context.Background(), timeout)
closeChannelAndAssert(t, net, ctx, net.Alice, chanPoint)
}
// Check that some requested outputs are not fulfilled when we don't have credits for all
// of them.
func TestFulfillRequestsNotEnoughCreditsForAllRequests(t *testing.T) {
tearDown, pool, _ := TstCreatePoolAndTxStore(t)
defer tearDown()
net := pool.Manager().ChainParams()
// Create eligible inputs and the list of outputs we need to fulfil.
seriesID, eligible := TstCreateCreditsOnNewSeries(t, pool, []int64{2e6, 4e6})
out1 := TstNewOutputRequest(
t, 1, "34eVkREKgvvGASZW7hkgE2uNc1yycntMK6", btcutil.Amount(3e6), net)
out2 := TstNewOutputRequest(
t, 2, "3PbExiaztsSYgh6zeMswC49hLUwhTQ86XG", btcutil.Amount(2e6), net)
out3 := TstNewOutputRequest(
t, 3, "3Qt1EaKRD9g9FeL2DGkLLswhK1AKmmXFSe", btcutil.Amount(5e6), net)
outputs := []OutputRequest{out1, out2, out3}
changeStart := TstNewChangeAddress(t, pool, seriesID, 0)
w := newWithdrawal(0, outputs, eligible, *changeStart)
if err := w.fulfillRequests(); err != nil {
t.Fatal(err)
}
tx := w.transactions[0]
// The created tx should spend both eligible credits, so we expect it to have
// an input amount of 2e6+4e6 satoshis.
inputAmount := eligible[0].Amount + eligible[1].Amount
// We expect it to include outputs for requests 1 and 2, plus a change output, but
// output request #3 should not be there because we don't have enough credits.
change := inputAmount - (out1.Amount + out2.Amount + tx.calculateFee())
expectedOutputs := []OutputRequest{out1, out2}
sort.Sort(byOutBailmentID(expectedOutputs))
expectedOutputs = append(
expectedOutputs, TstNewOutputRequest(t, 4, changeStart.addr.String(), change, net))
msgtx := tx.toMsgTx()
checkMsgTxOutputs(t, msgtx, expectedOutputs)
// withdrawal.status should state that outputs 1 and 2 were successfully fulfilled,
// and that output 3 was not.
expectedStatuses := map[OutBailmentID]outputStatus{
out1.outBailmentID(): statusSuccess,
out2.outBailmentID(): statusSuccess,
out3.outBailmentID(): statusPartial}
for _, wOutput := range w.status.outputs {
if wOutput.status != expectedStatuses[wOutput.request.outBailmentID()] {
t.Fatalf("Unexpected status for %v; got '%s', want '%s'", wOutput.request,
wOutput.status, expectedStatuses[wOutput.request.outBailmentID()])
}
}
}
// newServer creates a new instance of the server which is to listen using the
// passed listener address.
func newServer(listenAddrs []string, notifier chainntnfs.ChainNotifier,
bio lnwallet.BlockChainIO, wallet *lnwallet.LightningWallet,
chanDB *channeldb.DB) (*server, error) {
privKey, err := wallet.GetIdentitykey()
if err != nil {
return nil, err
}
listeners := make([]net.Listener, len(listenAddrs))
for i, addr := range listenAddrs {
listeners[i], err = brontide.NewListener(privKey, addr)
if err != nil {
return nil, err
}
}
serializedPubKey := privKey.PubKey().SerializeCompressed()
s := &server{
bio: bio,
chainNotifier: notifier,
chanDB: chanDB,
fundingMgr: newFundingManager(wallet),
invoices: newInvoiceRegistry(chanDB),
lnwallet: wallet,
identityPriv: privKey,
// TODO(roasbeef): derive proper onion key based on rotation
// schedule
sphinx: sphinx.NewRouter(privKey, activeNetParams.Params),
lightningID: fastsha256.Sum256(serializedPubKey),
listeners: listeners,
peers: make(map[int32]*peer),
newPeers: make(chan *peer, 100),
donePeers: make(chan *peer, 100),
queries: make(chan interface{}),
quit: make(chan struct{}),
}
// If the debug HTLC flag is on, then we invoice a "master debug"
// invoice which all outgoing payments will be sent and all incoming
// HTLC's with the debug R-Hash immediately settled.
if cfg.DebugHTLC {
kiloCoin := btcutil.Amount(btcutil.SatoshiPerBitcoin * 1000)
s.invoices.AddDebugInvoice(kiloCoin, *debugPre)
srvrLog.Debugf("Debug HTLC invoice inserted, preimage=%x, hash=%x",
debugPre[:], debugHash[:])
}
s.utxoNursery = newUtxoNursery(notifier, wallet)
// Create a new routing manager with ourself as the sole node within
// the graph.
selfVertex := hex.EncodeToString(serializedPubKey)
s.routingMgr = routing.NewRoutingManager(graph.NewID(selfVertex), nil)
s.htlcSwitch = newHtlcSwitch(serializedPubKey, s.routingMgr)
s.rpcServer = newRpcServer(s)
return s, nil
}
// Check that withdrawal.status correctly states that no outputs were fulfilled when we
// don't have enough eligible credits for any of them.
func TestFulfillRequestsNoSatisfiableOutputs(t *testing.T) {
tearDown, pool, _ := TstCreatePoolAndTxStore(t)
defer tearDown()
seriesID, eligible := TstCreateCreditsOnNewSeries(t, pool, []int64{1e6})
request := TstNewOutputRequest(
t, 1, "3Qt1EaKRD9g9FeL2DGkLLswhK1AKmmXFSe", btcutil.Amount(3e6), pool.Manager().ChainParams())
changeStart := TstNewChangeAddress(t, pool, seriesID, 0)
w := newWithdrawal(0, []OutputRequest{request}, eligible, *changeStart)
if err := w.fulfillRequests(); err != nil {
t.Fatal(err)
}
if len(w.transactions) != 0 {
t.Fatalf("Unexpected number of transactions; got %d, want 0", len(w.transactions))
}
if len(w.status.outputs) != 1 {
t.Fatalf("Unexpected number of outputs in WithdrawalStatus; got %d, want 1",
len(w.status.outputs))
}
status := w.status.outputs[request.outBailmentID()].status
if status != statusPartial {
t.Fatalf("Unexpected status for requested outputs; got '%s', want '%s'",
status, statusPartial)
}
}
func compareMsgTxAndWithdrawalTxOutputs(t *testing.T, msgtx *wire.MsgTx, tx *withdrawalTx) {
nOutputs := len(tx.outputs)
if tx.changeOutput != nil {
nOutputs++
}
if len(msgtx.TxOut) != nOutputs {
t.Fatalf("Unexpected number of TxOuts; got %d, want %d", len(msgtx.TxOut), nOutputs)
}
for i, output := range tx.outputs {
outputRequest := output.request
txOut := msgtx.TxOut[i]
if !bytes.Equal(txOut.PkScript, outputRequest.PkScript) {
t.Fatalf(
"Unexpected pkScript for outputRequest %d; got %x, want %x",
i, txOut.PkScript, outputRequest.PkScript)
}
gotAmount := btcutil.Amount(txOut.Value)
if gotAmount != outputRequest.Amount {
t.Fatalf(
"Unexpected amount for outputRequest %d; got %v, want %v",
i, gotAmount, outputRequest.Amount)
}
}
// Finally check the change output if it exists
if tx.changeOutput != nil {
msgTxChange := msgtx.TxOut[len(msgtx.TxOut)-1]
if msgTxChange != tx.changeOutput {
t.Fatalf("wrong TxOut in msgtx; got %v, want %v", msgTxChange, tx.changeOutput)
}
}
}
func fetchRawUnminedCreditAmount(v []byte) (btcutil.Amount, error) {
if len(v) < 9 {
str := "short unmined credit value"
return 0, storeError(ErrData, str, nil)
}
return btcutil.Amount(byteOrder.Uint64(v)), nil
}
func TestCommitSignatureEncodeDecode(t *testing.T) {
commitSignature := &CommitSignature{
ChannelPoint: outpoint1,
Fee: btcutil.Amount(10000),
LogIndex: 5,
CommitSig: commitSig,
}
// Next encode the CS message into an empty bytes buffer.
var b bytes.Buffer
if err := commitSignature.Encode(&b, 0); err != nil {
t.Fatalf("unable to encode CommitSignature: %v", err)
}
// Deserialize the encoded EG message into a new empty struct.
commitSignature2 := &CommitSignature{}
if err := commitSignature2.Decode(&b, 0); err != nil {
t.Fatalf("unable to decode CommitSignature: %v", err)
}
// Assert equality of the two instances.
if !reflect.DeepEqual(commitSignature, commitSignature2) {
t.Fatalf("encode/decode error messages don't match %#v vs %#v",
commitSignature, commitSignature2)
}
}
func TestHarness(t *testing.T) {
// We should have (numMatureOutputs * 50 BTC) of mature unspendable
// outputs.
expectedBalance := btcutil.Amount(numMatureOutputs * 50 * btcutil.SatoshiPerBitcoin)
harnessBalance := mainHarness.ConfirmedBalance()
if harnessBalance != expectedBalance {
t.Fatalf("expected wallet balance of %v instead have %v",
expectedBalance, harnessBalance)
}
// Current tip should be at a height of numMatureOutputs plus the
// required number of blocks for coinbase maturity.
nodeInfo, err := mainHarness.Node.GetInfo()
if err != nil {
t.Fatalf("unable to execute getinfo on node: %v", err)
}
expectedChainHeight := numMatureOutputs + uint32(mainHarness.ActiveNet.CoinbaseMaturity)
if uint32(nodeInfo.Blocks) != expectedChainHeight {
t.Errorf("Chain height is %v, should be %v",
nodeInfo.Blocks, expectedChainHeight)
}
for _, testCase := range harnessTestCases {
testCase(mainHarness, t)
}
testTearDownAll(t)
}
func createAndFulfillWithdrawalRequests(t *testing.T, pool *Pool, roundID uint32) withdrawalInfo {
params := pool.Manager().ChainParams()
seriesID, eligible := TstCreateCreditsOnNewSeries(t, pool, []int64{2e6, 4e6})
requests := []OutputRequest{
TstNewOutputRequest(t, 1, "34eVkREKgvvGASZW7hkgE2uNc1yycntMK6", 3e6, params),
TstNewOutputRequest(t, 2, "3PbExiaztsSYgh6zeMswC49hLUwhTQ86XG", 2e6, params),
}
changeStart := TstNewChangeAddress(t, pool, seriesID, 0)
dustThreshold := btcutil.Amount(1e4)
startAddr := TstNewWithdrawalAddress(t, pool, seriesID, 1, 0)
lastSeriesID := seriesID
w := newWithdrawal(roundID, requests, eligible, *changeStart)
if err := w.fulfillRequests(); err != nil {
t.Fatal(err)
}
return withdrawalInfo{
requests: requests,
startAddress: *startAddr,
changeStart: *changeStart,
lastSeriesID: lastSeriesID,
dustThreshold: dustThreshold,
status: *w.status,
}
}
// TstCreateCreditsOnStore inserts a new credit in the given store for
// every item in the amounts slice.
func TstCreateCreditsOnStore(t *testing.T, s *wtxmgr.Store, pkScript []byte,
amounts []int64) []wtxmgr.Credit {
msgTx := createMsgTx(pkScript, amounts)
meta := &wtxmgr.BlockMeta{
Block: wtxmgr.Block{Height: TstInputsBlock},
}
rec, err := wtxmgr.NewTxRecordFromMsgTx(msgTx, time.Now())
if err != nil {
t.Fatal(err)
}
if err := s.InsertTx(rec, meta); err != nil {
t.Fatal("Failed to create inputs: ", err)
}
credits := make([]wtxmgr.Credit, len(msgTx.TxOut))
for i := range msgTx.TxOut {
if err := s.AddCredit(rec, meta, uint32(i), false); err != nil {
t.Fatal("Failed to create inputs: ", err)
}
credits[i] = wtxmgr.Credit{
OutPoint: wire.OutPoint{
Hash: rec.Hash,
Index: uint32(i),
},
BlockMeta: *meta,
Amount: btcutil.Amount(msgTx.TxOut[i].Value),
PkScript: msgTx.TxOut[i].PkScript,
}
}
return credits
}
// TstCreateSeriesCredits creates a new credit for every item in the amounts
// slice, locked to the given series' address with branch==1 and index==0.
func TstCreateSeriesCredits(t *testing.T, pool *Pool, seriesID uint32, amounts []int64) []credit {
addr := TstNewWithdrawalAddress(t, pool, seriesID, Branch(1), Index(0))
pkScript, err := txscript.PayToAddrScript(addr.addr)
if err != nil {
t.Fatal(err)
}
msgTx := createMsgTx(pkScript, amounts)
txSha := msgTx.TxSha()
credits := make([]credit, len(amounts))
for i := range msgTx.TxOut {
c := wtxmgr.Credit{
OutPoint: wire.OutPoint{
Hash: txSha,
Index: uint32(i),
},
BlockMeta: wtxmgr.BlockMeta{
Block: wtxmgr.Block{Height: TstInputsBlock},
},
Amount: btcutil.Amount(msgTx.TxOut[i].Value),
PkScript: msgTx.TxOut[i].PkScript,
}
credits[i] = newCredit(c, *addr)
}
return credits
}
func makeInputSource(unspents []*wire.TxOut) InputSource {
// Return outputs in order.
currentTotal := btcutil.Amount(0)
currentInputs := make([]*wire.TxIn, 0, len(unspents))
f := func(target btcutil.Amount) (btcutil.Amount, []*wire.TxIn, [][]byte, error) {
for currentTotal < target && len(unspents) != 0 {
u := unspents[0]
unspents = unspents[1:]
nextInput := wire.NewTxIn(&wire.OutPoint{}, nil)
currentTotal += btcutil.Amount(u.Value)
currentInputs = append(currentInputs, nextInput)
}
return currentTotal, currentInputs, make([][]byte, len(currentInputs)), nil
}
return InputSource(f)
}
func TestCloseRequestEncodeDecode(t *testing.T) {
cr := &CloseRequest{
ChannelPoint: outpoint1,
RequesterCloseSig: commitSig,
Fee: btcutil.Amount(10000),
}
// Next encode the CR message into an empty bytes buffer.
var b bytes.Buffer
if err := cr.Encode(&b, 0); err != nil {
t.Fatalf("unable to encode CloseRequest: %v", err)
}
// Deserialize the encoded CR message into a new empty struct.
cr2 := &CloseRequest{}
if err := cr2.Decode(&b, 0); err != nil {
t.Fatalf("unable to decode CloseRequest: %v", err)
}
// Assert equality of the two instances.
if !reflect.DeepEqual(cr, cr2) {
t.Fatalf("encode/decode error messages don't match %#v vs %#v",
cr, cr2)
}
}
func deserializeHTLC(r io.Reader) (*HTLC, error) {
h := &HTLC{}
var scratch [8]byte
if _, err := r.Read(scratch[:1]); err != nil {
return nil, err
}
if scratch[0] == 1 {
h.Incoming = true
} else {
h.Incoming = false
}
if _, err := r.Read(scratch[:]); err != nil {
return nil, err
}
h.Amt = btcutil.Amount(byteOrder.Uint64(scratch[:]))
if _, err := r.Read(h.RHash[:]); err != nil {
return nil, err
}
if _, err := r.Read(scratch[:4]); err != nil {
return nil, err
}
h.RefundTimeout = byteOrder.Uint32(scratch[:4])
if _, err := r.Read(scratch[:4]); err != nil {
return nil, err
}
h.RevocationDelay = byteOrder.Uint32(scratch[:])
return h, nil
}
func makeInputSource(eligible []wtxmgr.Credit) txauthor.InputSource {
// Pick largest outputs first. This is only done for compatibility with
// previous tx creation code, not because it's a good idea.
sort.Sort(sort.Reverse(byAmount(eligible)))
// Current inputs and their total value. These are closed over by the
// returned input source and reused across multiple calls.
currentTotal := btcutil.Amount(0)
currentInputs := make([]*wire.TxIn, 0, len(eligible))
currentScripts := make([][]byte, 0, len(eligible))
currentInputValues := make([]btcutil.Amount, 0, len(eligible))
return func(target btcutil.Amount) (btcutil.Amount, []*wire.TxIn,
[]btcutil.Amount, [][]byte, error) {
for currentTotal < target && len(eligible) != 0 {
nextCredit := &eligible[0]
eligible = eligible[1:]
nextInput := wire.NewTxIn(&nextCredit.OutPoint, nil, nil)
currentTotal += nextCredit.Amount
currentInputs = append(currentInputs, nextInput)
currentScripts = append(currentScripts, nextCredit.PkScript)
currentInputValues = append(currentInputValues, nextCredit.Amount)
}
return currentTotal, currentInputs, currentInputValues, currentScripts, nil
}
}
// evalOutputs evaluates each of the passed outputs, creating a new matching
// utxo within the wallet if we're able to spend the output.
func (m *memWallet) evalOutputs(outputs []*wire.TxOut, txHash *chainhash.Hash,
isCoinbase bool, undo *undoEntry) {
for i, output := range outputs {
pkScript := output.PkScript
// Scan all the addresses we currently control to see if the
// output is paying to us.
for keyIndex, addr := range m.addrs {
pkHash := addr.ScriptAddress()
if !bytes.Contains(pkScript, pkHash) {
continue
}
// If this is a coinbase output, then we mark the
// maturity height at the proper block height in the
// future.
var maturityHeight int32
if isCoinbase {
maturityHeight = m.currentHeight + int32(m.net.CoinbaseMaturity)
}
op := wire.OutPoint{Hash: *txHash, Index: uint32(i)}
m.utxos[op] = &utxo{
value: btcutil.Amount(output.Value),
keyIndex: keyIndex,
maturityHeight: maturityHeight,
pkScript: pkScript,
}
undo.utxosCreated = append(undo.utxosCreated, op)
}
}
}
// TestOutputSplittingNotEnoughInputs checks that an output will get split if we
// don't have enough inputs to fulfil it.
func TestOutputSplittingNotEnoughInputs(t *testing.T) {
tearDown, pool, _ := TstCreatePoolAndTxStore(t)
defer tearDown()
net := pool.Manager().ChainParams()
output1Amount := btcutil.Amount(2)
output2Amount := btcutil.Amount(3)
requests := []OutputRequest{
// These output requests will have the same server ID, so we know
// they'll be fulfilled in the order they're defined here, which is
// important for this test.
TstNewOutputRequest(t, 1, "34eVkREKgvvGASZW7hkgE2uNc1yycntMK6", output1Amount, net),
TstNewOutputRequest(t, 2, "34eVkREKgvvGASZW7hkgE2uNc1yycntMK6", output2Amount, net),
}
seriesID, eligible := TstCreateCreditsOnNewSeries(t, pool, []int64{7})
w := newWithdrawal(0, requests, eligible, *TstNewChangeAddress(t, pool, seriesID, 0))
w.txOptions = func(tx *withdrawalTx) {
// Trigger an output split because of lack of inputs by forcing a high fee.
// If we just started with not enough inputs for the requested outputs,
// fulfillRequests() would drop outputs until we had enough.
tx.calculateFee = TstConstantFee(3)
}
if err := w.fulfillRequests(); err != nil {
t.Fatal(err)
}
if len(w.transactions) != 1 {
t.Fatalf("Wrong number of finalized transactions; got %d, want 1", len(w.transactions))
}
tx := w.transactions[0]
if len(tx.outputs) != 2 {
t.Fatalf("Wrong number of outputs; got %d, want 2", len(tx.outputs))
}
// The first output should've been left untouched.
if tx.outputs[0].amount != output1Amount {
t.Fatalf("Wrong amount for first tx output; got %v, want %v",
tx.outputs[0].amount, output1Amount)
}
// The last output should have had its amount updated to whatever we had
// left after satisfying all previous outputs.
newAmount := tx.inputTotal() - output1Amount - tx.calculateFee()
checkLastOutputWasSplit(t, w, tx, output2Amount, newAmount)
}
func TestFindingSpentCredits(t *testing.T) {
t.Parallel()
s, teardown, err := testStore()
defer teardown()
if err != nil {
t.Fatal(err)
}
// Insert transaction and credit which will be spent.
recvRec, err := NewTxRecord(TstRecvSerializedTx, time.Now())
if err != nil {
t.Fatal(err)
}
err = s.InsertTx(recvRec, TstRecvTxBlockDetails)
if err != nil {
t.Fatal(err)
}
err = s.AddCredit(recvRec, TstRecvTxBlockDetails, 0, false)
if err != nil {
t.Fatal(err)
}
// Insert confirmed transaction which spends the above credit.
spendingRec, err := NewTxRecord(TstSpendingSerializedTx, time.Now())
if err != nil {
t.Fatal(err)
}
err = s.InsertTx(spendingRec, TstSignedTxBlockDetails)
if err != nil {
t.Fatal(err)
}
err = s.AddCredit(spendingRec, TstSignedTxBlockDetails, 0, false)
if err != nil {
t.Fatal(err)
}
bal, err := s.Balance(1, TstSignedTxBlockDetails.Height)
if err != nil {
t.Fatal(err)
}
expectedBal := btcutil.Amount(TstSpendingTx.MsgTx().TxOut[0].Value)
if bal != expectedBal {
t.Fatalf("bad balance: %v != %v", bal, expectedBal)
}
unspents, err := s.UnspentOutputs()
if err != nil {
t.Fatal(err)
}
op := wire.NewOutPoint(TstSpendingTx.Sha(), 0)
if unspents[0].OutPoint != *op {
t.Fatal("unspent outpoint doesn't match expected")
}
if len(unspents) > 1 {
t.Fatal("has more than one unspent credit")
}
}
// fetchRawCreditAmountChange returns the amount of the credit and whether the
// credit is marked as change.
func fetchRawCreditAmountChange(v []byte) (btcutil.Amount, bool, error) {
if len(v) < 9 {
str := fmt.Sprintf("%s: short read (expected %d bytes, read %d)",
bucketCredits, 9, len(v))
return 0, false, storeError(ErrData, str, nil)
}
return btcutil.Amount(byteOrder.Uint64(v)), v[8]&(1<<1) != 0, nil
}
// addCredit is an AddCredit helper that runs in an update transaction. The
// bool return specifies whether the unspent output is newly added (true) or a
// duplicate (false).
func (s *Store) addCredit(ns walletdb.Bucket, rec *TxRecord, block *BlockMeta, index uint32, change bool) (bool, error) {
if block == nil {
k := canonicalOutPoint(&rec.Hash, index)
if existsRawUnminedCredit(ns, k) != nil {
return false, nil
}
v := valueUnminedCredit(btcutil.Amount(rec.MsgTx.TxOut[index].Value), change)
return true, putRawUnminedCredit(ns, k, v)
}
k, v := existsCredit(ns, &rec.Hash, index, &block.Block)
if v != nil {
return false, nil
}
txOutAmt := btcutil.Amount(rec.MsgTx.TxOut[index].Value)
log.Debugf("Marking transaction %v output %d (%v) spendable",
rec.Hash, index, txOutAmt)
cred := credit{
outPoint: wire.OutPoint{
Hash: rec.Hash,
Index: index,
},
block: block.Block,
amount: txOutAmt,
change: change,
spentBy: indexedIncidence{index: ^uint32(0)},
}
v = valueUnspentCredit(&cred)
err := putRawCredit(ns, k, v)
if err != nil {
return false, err
}
minedBalance, err := fetchMinedBalance(ns)
if err != nil {
return false, err
}
err = putMinedBalance(ns, minedBalance+txOutAmt)
if err != nil {
return false, err
}
return true, putUnspent(ns, &cred.outPoint, &block.Block)
}
// CreateTransaction returns a fully signed transaction paying to the specified
// outputs while observing the desired fee rate. The passed fee rate should be
// expressed in satoshis-per-byte.
//
// This function is safe for concurrent access.
func (m *memWallet) CreateTransaction(outputs []*wire.TxOut, feeRate btcutil.Amount) (*wire.MsgTx, error) {
m.Lock()
defer m.Unlock()
tx := wire.NewMsgTx(wire.TxVersion)
// Tally up the total amount to be sent in order to perform coin
// selection shortly below.
var outputAmt btcutil.Amount
for _, output := range outputs {
outputAmt += btcutil.Amount(output.Value)
tx.AddTxOut(output)
}
// Attempt to fund the transaction with spendable utxos.
if err := m.fundTx(tx, outputAmt, feeRate); err != nil {
return nil, err
}
// Populate all the selected inputs with valid sigScript for spending.
// Along the way record all outputs being spent in order to avoid a
// potential double spend.
spentOutputs := make([]*utxo, 0, len(tx.TxIn))
for i, txIn := range tx.TxIn {
outPoint := txIn.PreviousOutPoint
utxo := m.utxos[outPoint]
extendedKey, err := m.hdRoot.Child(utxo.keyIndex)
if err != nil {
return nil, err
}
privKey, err := extendedKey.ECPrivKey()
if err != nil {
return nil, err
}
sigScript, err := txscript.SignatureScript(tx, i, utxo.pkScript,
txscript.SigHashAll, privKey, true)
if err != nil {
return nil, err
}
txIn.SignatureScript = sigScript
spentOutputs = append(spentOutputs, utxo)
}
// As these outputs are now being spent by this newly created
// transaction, mark the outputs are "locked". This action ensures
// these outputs won't be double spent by any subsequent transactions.
// These locked outputs can be freed via a call to UnlockOutputs.
for _, utxo := range spentOutputs {
utxo.isLocked = true
}
return tx, nil
}
// maybeDropRequests will check the total amount we have in eligible inputs and drop
// requested outputs (in descending amount order) if we don't have enough to
// fulfill them all. For every dropped output request we update its entry in
// w.status.outputs with the status string set to statusPartial.
func (w *withdrawal) maybeDropRequests() {
inputAmount := btcutil.Amount(0)
for _, input := range w.eligibleInputs {
inputAmount += input.Amount
}
outputAmount := btcutil.Amount(0)
for _, request := range w.pendingRequests {
outputAmount += request.Amount
}
sort.Sort(sort.Reverse(byAmount(w.pendingRequests)))
for inputAmount < outputAmount {
request := w.popRequest()
log.Infof("Not fulfilling request to send %v to %v; not enough credits.",
request.Amount, request.Address)
outputAmount -= request.Amount
w.status.outputs[request.outBailmentID()].status = statusPartial
}
}
