lnd.xprv/test_utils.go

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package main
import (
"bytes"
"io/ioutil"
"math/rand"
"net"
"os"
"github.com/lightningnetwork/lnd/chainntnfs"
"github.com/lightningnetwork/lnd/channeldb"
"github.com/lightningnetwork/lnd/htlcswitch"
"github.com/lightningnetwork/lnd/lnwallet"
"github.com/lightningnetwork/lnd/lnwire"
"github.com/lightningnetwork/lnd/shachain"
"github.com/roasbeef/btcd/btcec"
"github.com/roasbeef/btcd/chaincfg/chainhash"
"github.com/roasbeef/btcd/wire"
"github.com/roasbeef/btcutil"
)
var (
alicesPrivKey = []byte{
0x2b, 0xd8, 0x06, 0xc9, 0x7f, 0x0e, 0x00, 0xaf,
0x1a, 0x1f, 0xc3, 0x32, 0x8f, 0xa7, 0x63, 0xa9,
0x26, 0x97, 0x23, 0xc8, 0xdb, 0x8f, 0xac, 0x4f,
0x93, 0xaf, 0x71, 0xdb, 0x18, 0x6d, 0x6e, 0x90,
}
bobsPrivKey = []byte{
0x81, 0xb6, 0x37, 0xd8, 0xfc, 0xd2, 0xc6, 0xda,
0x63, 0x59, 0xe6, 0x96, 0x31, 0x13, 0xa1, 0x17,
0xd, 0xe7, 0x95, 0xe4, 0xb7, 0x25, 0xb8, 0x4d,
0x1e, 0xb, 0x4c, 0xfd, 0x9e, 0xc5, 0x8c, 0xe9,
}
// Use a hard-coded HD seed.
testHdSeed = [32]byte{
0xb7, 0x94, 0x38, 0x5f, 0x2d, 0x1e, 0xf7, 0xab,
0x4d, 0x92, 0x73, 0xd1, 0x90, 0x63, 0x81, 0xb4,
0x4f, 0x2f, 0x6f, 0x25, 0x88, 0xa3, 0xef, 0xb9,
0x6a, 0x49, 0x18, 0x83, 0x31, 0x98, 0x47, 0x53,
}
// Just use some arbitrary bytes as delivery script.
dummyDeliveryScript = alicesPrivKey[:]
)
// createTestPeer creates a channel between two nodes, and returns a peer for
// one of the nodes, together with the channel seen from both nodes.
func createTestPeer(notifier chainntnfs.ChainNotifier,
publTx chan *wire.MsgTx) (*peer, *lnwallet.LightningChannel,
*lnwallet.LightningChannel, func(), error) {
aliceKeyPriv, aliceKeyPub := btcec.PrivKeyFromBytes(btcec.S256(),
alicesPrivKey)
bobKeyPriv, bobKeyPub := btcec.PrivKeyFromBytes(btcec.S256(),
bobsPrivKey)
channelCapacity := btcutil.Amount(10 * 1e8)
channelBal := channelCapacity / 2
aliceDustLimit := btcutil.Amount(200)
bobDustLimit := btcutil.Amount(1300)
csvTimeoutAlice := uint32(5)
csvTimeoutBob := uint32(4)
prevOut := &wire.OutPoint{
Hash: chainhash.Hash(testHdSeed),
Index: 0,
}
fundingTxIn := wire.NewTxIn(prevOut, nil, nil)
aliceCfg := channeldb.ChannelConfig{
ChannelConstraints: channeldb.ChannelConstraints{
DustLimit: aliceDustLimit,
MaxPendingAmount: lnwire.MilliSatoshi(rand.Int63()),
ChanReserve: btcutil.Amount(rand.Int63()),
MinHTLC: lnwire.MilliSatoshi(rand.Int63()),
MaxAcceptedHtlcs: uint16(rand.Int31()),
},
CsvDelay: uint16(csvTimeoutAlice),
MultiSigKey: aliceKeyPub,
RevocationBasePoint: aliceKeyPub,
PaymentBasePoint: aliceKeyPub,
DelayBasePoint: aliceKeyPub,
}
bobCfg := channeldb.ChannelConfig{
ChannelConstraints: channeldb.ChannelConstraints{
DustLimit: bobDustLimit,
MaxPendingAmount: lnwire.MilliSatoshi(rand.Int63()),
ChanReserve: btcutil.Amount(rand.Int63()),
MinHTLC: lnwire.MilliSatoshi(rand.Int63()),
MaxAcceptedHtlcs: uint16(rand.Int31()),
},
CsvDelay: uint16(csvTimeoutBob),
MultiSigKey: bobKeyPub,
RevocationBasePoint: bobKeyPub,
PaymentBasePoint: bobKeyPub,
DelayBasePoint: bobKeyPub,
}
bobRoot := lnwallet.DeriveRevocationRoot(bobKeyPriv, testHdSeed, aliceKeyPub)
bobPreimageProducer := shachain.NewRevocationProducer(bobRoot)
bobFirstRevoke, err := bobPreimageProducer.AtIndex(0)
if err != nil {
return nil, nil, nil, nil, err
}
bobCommitPoint := lnwallet.ComputeCommitmentPoint(bobFirstRevoke[:])
aliceRoot := lnwallet.DeriveRevocationRoot(aliceKeyPriv, testHdSeed, bobKeyPub)
alicePreimageProducer := shachain.NewRevocationProducer(aliceRoot)
aliceFirstRevoke, err := alicePreimageProducer.AtIndex(0)
if err != nil {
return nil, nil, nil, nil, err
}
aliceCommitPoint := lnwallet.ComputeCommitmentPoint(aliceFirstRevoke[:])
aliceCommitTx, bobCommitTx, err := lnwallet.CreateCommitmentTxns(channelBal,
channelBal, &aliceCfg, &bobCfg, aliceCommitPoint, bobCommitPoint,
fundingTxIn)
if err != nil {
return nil, nil, nil, nil, err
}
alicePath, err := ioutil.TempDir("", "alicedb")
dbAlice, err := channeldb.Open(alicePath)
if err != nil {
return nil, nil, nil, nil, err
}
bobPath, err := ioutil.TempDir("", "bobdb")
dbBob, err := channeldb.Open(bobPath)
if err != nil {
return nil, nil, nil, nil, err
}
var obsfucator [lnwallet.StateHintSize]byte
copy(obsfucator[:], aliceFirstRevoke[:])
estimator := &lnwallet.StaticFeeEstimator{FeeRate: 50}
feePerKw := btcutil.Amount(estimator.EstimateFeePerWeight(1) * 1000)
aliceChannelState := &channeldb.OpenChannel{
LocalChanCfg: aliceCfg,
RemoteChanCfg: bobCfg,
IdentityPub: aliceKeyPub,
FundingOutpoint: *prevOut,
ChanType: channeldb.SingleFunder,
FeePerKw: feePerKw,
IsInitiator: true,
Capacity: channelCapacity,
LocalBalance: lnwire.NewMSatFromSatoshis(channelBal),
RemoteBalance: lnwire.NewMSatFromSatoshis(channelBal),
CommitTx: *aliceCommitTx,
CommitSig: bytes.Repeat([]byte{1}, 71),
RemoteCurrentRevocation: bobCommitPoint,
RevocationProducer: alicePreimageProducer,
RevocationStore: shachain.NewRevocationStore(),
Db: dbAlice,
}
addr := &net.TCPAddr{
IP: net.ParseIP("127.0.0.1"),
Port: 18555,
}
if err := aliceChannelState.SyncPending(addr, 0); err != nil {
return nil, nil, nil, nil, err
}
bobChannelState := &channeldb.OpenChannel{
LocalChanCfg: bobCfg,
RemoteChanCfg: aliceCfg,
IdentityPub: bobKeyPub,
FeePerKw: feePerKw,
FundingOutpoint: *prevOut,
ChanType: channeldb.SingleFunder,
IsInitiator: false,
Capacity: channelCapacity,
LocalBalance: lnwire.NewMSatFromSatoshis(channelBal),
RemoteBalance: lnwire.NewMSatFromSatoshis(channelBal),
CommitTx: *bobCommitTx,
CommitSig: bytes.Repeat([]byte{1}, 71),
RemoteCurrentRevocation: aliceCommitPoint,
RevocationProducer: bobPreimageProducer,
RevocationStore: shachain.NewRevocationStore(),
Db: dbBob,
}
addr = &net.TCPAddr{
IP: net.ParseIP("127.0.0.1"),
Port: 18556,
}
if err := bobChannelState.SyncPending(addr, 0); err != nil {
return nil, nil, nil, nil, err
}
cleanUpFunc := func() {
os.RemoveAll(bobPath)
os.RemoveAll(alicePath)
}
aliceSigner := &mockSigner{aliceKeyPriv}
bobSigner := &mockSigner{bobKeyPriv}
channelAlice, err := lnwallet.NewLightningChannel(aliceSigner, notifier,
estimator, aliceChannelState)
if err != nil {
return nil, nil, nil, nil, err
}
channelBob, err := lnwallet.NewLightningChannel(bobSigner, notifier,
estimator, bobChannelState)
if err != nil {
return nil, nil, nil, nil, err
}
chainIO := &mockChainIO{}
wallet := &lnwallet.LightningWallet{
WalletController: &mockWalletController{
rootKey: aliceKeyPriv,
publishedTransactions: publTx,
},
}
cc := &chainControl{
feeEstimator: estimator,
chainIO: chainIO,
chainNotifier: notifier,
wallet: wallet,
}
breachArbiter := &breachArbiter{
settledContracts: make(chan *wire.OutPoint, 10),
}
s := &server{
chanDB: dbAlice,
cc: cc,
breachArbiter: breachArbiter,
}
s.htlcSwitch = htlcswitch.New(htlcswitch.Config{})
s.htlcSwitch.Start()
alicePeer := &peer{
server: s,
sendQueue: make(chan outgoinMsg, 1),
outgoingQueue: make(chan outgoinMsg, outgoingQueueLen),
activeChannels: make(map[lnwire.ChannelID]*lnwallet.LightningChannel),
newChannels: make(chan *newChannelMsg, 1),
localCloseChanReqs: make(chan *htlcswitch.ChanClose),
shutdownChanReqs: make(chan *lnwire.Shutdown),
closingSignedChanReqs: make(chan *lnwire.ClosingSigned),
queueQuit: make(chan struct{}),
quit: make(chan struct{}),
}
chanID := lnwire.NewChanIDFromOutPoint(channelAlice.ChannelPoint())
alicePeer.activeChannels[chanID] = channelAlice
go alicePeer.channelManager()
return alicePeer, channelAlice, channelBob, cleanUpFunc, nil
}