505 lines
14 KiB
Go
505 lines
14 KiB
Go
package peer
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import (
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"bytes"
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crand "crypto/rand"
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"encoding/binary"
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"io"
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"io/ioutil"
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"math/rand"
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"net"
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"os"
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"testing"
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"time"
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"github.com/btcsuite/btcd/btcec"
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"github.com/btcsuite/btcd/chaincfg/chainhash"
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"github.com/btcsuite/btcd/wire"
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"github.com/btcsuite/btcutil"
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"github.com/lightningnetwork/lnd/chainntnfs"
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"github.com/lightningnetwork/lnd/channeldb"
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"github.com/lightningnetwork/lnd/htlcswitch"
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"github.com/lightningnetwork/lnd/input"
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"github.com/lightningnetwork/lnd/keychain"
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"github.com/lightningnetwork/lnd/lntest/mock"
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"github.com/lightningnetwork/lnd/lnwallet"
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"github.com/lightningnetwork/lnd/lnwallet/chainfee"
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"github.com/lightningnetwork/lnd/lnwire"
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"github.com/lightningnetwork/lnd/netann"
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"github.com/lightningnetwork/lnd/queue"
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"github.com/lightningnetwork/lnd/shachain"
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"github.com/lightningnetwork/lnd/ticker"
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"github.com/stretchr/testify/require"
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)
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const (
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broadcastHeight = 100
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// timeout is a timeout value to use for tests which need to wait for
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// a return value on a channel.
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timeout = time.Second * 5
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)
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var (
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alicesPrivKey = []byte{
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0x2b, 0xd8, 0x06, 0xc9, 0x7f, 0x0e, 0x00, 0xaf,
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0x1a, 0x1f, 0xc3, 0x32, 0x8f, 0xa7, 0x63, 0xa9,
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0x26, 0x97, 0x23, 0xc8, 0xdb, 0x8f, 0xac, 0x4f,
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0x93, 0xaf, 0x71, 0xdb, 0x18, 0x6d, 0x6e, 0x90,
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}
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bobsPrivKey = []byte{
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0x81, 0xb6, 0x37, 0xd8, 0xfc, 0xd2, 0xc6, 0xda,
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0x63, 0x59, 0xe6, 0x96, 0x31, 0x13, 0xa1, 0x17,
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0xd, 0xe7, 0x95, 0xe4, 0xb7, 0x25, 0xb8, 0x4d,
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0x1e, 0xb, 0x4c, 0xfd, 0x9e, 0xc5, 0x8c, 0xe9,
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}
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// Use a hard-coded HD seed.
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testHdSeed = [32]byte{
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0xb7, 0x94, 0x38, 0x5f, 0x2d, 0x1e, 0xf7, 0xab,
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0x4d, 0x92, 0x73, 0xd1, 0x90, 0x63, 0x81, 0xb4,
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0x4f, 0x2f, 0x6f, 0x25, 0x88, 0xa3, 0xef, 0xb9,
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0x6a, 0x49, 0x18, 0x83, 0x31, 0x98, 0x47, 0x53,
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}
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// Just use some arbitrary bytes as delivery script.
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dummyDeliveryScript = alicesPrivKey
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// testTx is used as the default funding txn for single-funder channels.
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testTx = &wire.MsgTx{
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Version: 1,
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TxIn: []*wire.TxIn{
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{
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PreviousOutPoint: wire.OutPoint{
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Hash: chainhash.Hash{},
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Index: 0xffffffff,
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},
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SignatureScript: []byte{0x04, 0x31, 0xdc, 0x00, 0x1b, 0x01, 0x62},
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Sequence: 0xffffffff,
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},
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},
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TxOut: []*wire.TxOut{
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{
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Value: 5000000000,
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PkScript: []byte{
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0x41, // OP_DATA_65
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0x04, 0xd6, 0x4b, 0xdf, 0xd0, 0x9e, 0xb1, 0xc5,
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0xfe, 0x29, 0x5a, 0xbd, 0xeb, 0x1d, 0xca, 0x42,
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0x81, 0xbe, 0x98, 0x8e, 0x2d, 0xa0, 0xb6, 0xc1,
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0xc6, 0xa5, 0x9d, 0xc2, 0x26, 0xc2, 0x86, 0x24,
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0xe1, 0x81, 0x75, 0xe8, 0x51, 0xc9, 0x6b, 0x97,
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0x3d, 0x81, 0xb0, 0x1c, 0xc3, 0x1f, 0x04, 0x78,
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0x34, 0xbc, 0x06, 0xd6, 0xd6, 0xed, 0xf6, 0x20,
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0xd1, 0x84, 0x24, 0x1a, 0x6a, 0xed, 0x8b, 0x63,
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0xa6, // 65-byte signature
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0xac, // OP_CHECKSIG
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},
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},
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},
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LockTime: 5,
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}
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)
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// noUpdate is a function which can be used as a parameter in createTestPeer to
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// call the setup code with no custom values on the channels set up.
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var noUpdate = func(a, b *channeldb.OpenChannel) {}
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// createTestPeer creates a channel between two nodes, and returns a peer for
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// one of the nodes, together with the channel seen from both nodes. It takes
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// an updateChan function which can be used to modify the default values on
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// the channel states for each peer.
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func createTestPeer(notifier chainntnfs.ChainNotifier,
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publTx chan *wire.MsgTx, updateChan func(a, b *channeldb.OpenChannel)) (
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*Brontide, *lnwallet.LightningChannel, func(), error) {
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aliceKeyPriv, aliceKeyPub := btcec.PrivKeyFromBytes(
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btcec.S256(), alicesPrivKey,
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)
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aliceKeySigner := &keychain.PrivKeyDigestSigner{PrivKey: aliceKeyPriv}
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bobKeyPriv, bobKeyPub := btcec.PrivKeyFromBytes(
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btcec.S256(), bobsPrivKey,
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)
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channelCapacity := btcutil.Amount(10 * 1e8)
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channelBal := channelCapacity / 2
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aliceDustLimit := btcutil.Amount(200)
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bobDustLimit := btcutil.Amount(1300)
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csvTimeoutAlice := uint32(5)
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csvTimeoutBob := uint32(4)
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prevOut := &wire.OutPoint{
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Hash: chainhash.Hash(testHdSeed),
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Index: 0,
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}
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fundingTxIn := wire.NewTxIn(prevOut, nil, nil)
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aliceCfg := channeldb.ChannelConfig{
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ChannelConstraints: channeldb.ChannelConstraints{
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DustLimit: aliceDustLimit,
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MaxPendingAmount: lnwire.MilliSatoshi(rand.Int63()),
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ChanReserve: btcutil.Amount(rand.Int63()),
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MinHTLC: lnwire.MilliSatoshi(rand.Int63()),
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MaxAcceptedHtlcs: uint16(rand.Int31()),
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CsvDelay: uint16(csvTimeoutAlice),
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},
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MultiSigKey: keychain.KeyDescriptor{
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PubKey: aliceKeyPub,
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},
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RevocationBasePoint: keychain.KeyDescriptor{
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PubKey: aliceKeyPub,
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},
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PaymentBasePoint: keychain.KeyDescriptor{
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PubKey: aliceKeyPub,
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},
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DelayBasePoint: keychain.KeyDescriptor{
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PubKey: aliceKeyPub,
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},
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HtlcBasePoint: keychain.KeyDescriptor{
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PubKey: aliceKeyPub,
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},
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}
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bobCfg := channeldb.ChannelConfig{
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ChannelConstraints: channeldb.ChannelConstraints{
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DustLimit: bobDustLimit,
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MaxPendingAmount: lnwire.MilliSatoshi(rand.Int63()),
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ChanReserve: btcutil.Amount(rand.Int63()),
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MinHTLC: lnwire.MilliSatoshi(rand.Int63()),
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MaxAcceptedHtlcs: uint16(rand.Int31()),
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CsvDelay: uint16(csvTimeoutBob),
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},
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MultiSigKey: keychain.KeyDescriptor{
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PubKey: bobKeyPub,
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},
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RevocationBasePoint: keychain.KeyDescriptor{
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PubKey: bobKeyPub,
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},
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PaymentBasePoint: keychain.KeyDescriptor{
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PubKey: bobKeyPub,
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},
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DelayBasePoint: keychain.KeyDescriptor{
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PubKey: bobKeyPub,
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},
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HtlcBasePoint: keychain.KeyDescriptor{
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PubKey: bobKeyPub,
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},
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}
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bobRoot, err := chainhash.NewHash(bobKeyPriv.Serialize())
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if err != nil {
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return nil, nil, nil, err
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}
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bobPreimageProducer := shachain.NewRevocationProducer(*bobRoot)
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bobFirstRevoke, err := bobPreimageProducer.AtIndex(0)
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if err != nil {
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return nil, nil, nil, err
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}
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bobCommitPoint := input.ComputeCommitmentPoint(bobFirstRevoke[:])
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aliceRoot, err := chainhash.NewHash(aliceKeyPriv.Serialize())
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if err != nil {
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return nil, nil, nil, err
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}
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alicePreimageProducer := shachain.NewRevocationProducer(*aliceRoot)
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aliceFirstRevoke, err := alicePreimageProducer.AtIndex(0)
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if err != nil {
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return nil, nil, nil, err
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}
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aliceCommitPoint := input.ComputeCommitmentPoint(aliceFirstRevoke[:])
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aliceCommitTx, bobCommitTx, err := lnwallet.CreateCommitmentTxns(
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channelBal, channelBal, &aliceCfg, &bobCfg, aliceCommitPoint,
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bobCommitPoint, *fundingTxIn, channeldb.SingleFunderTweaklessBit,
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)
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if err != nil {
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return nil, nil, nil, err
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}
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alicePath, err := ioutil.TempDir("", "alicedb")
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if err != nil {
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return nil, nil, nil, err
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}
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dbAlice, err := channeldb.Open(alicePath)
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if err != nil {
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return nil, nil, nil, err
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}
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bobPath, err := ioutil.TempDir("", "bobdb")
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if err != nil {
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return nil, nil, nil, err
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}
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dbBob, err := channeldb.Open(bobPath)
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if err != nil {
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return nil, nil, nil, err
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}
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estimator := chainfee.NewStaticEstimator(12500, 0)
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feePerKw, err := estimator.EstimateFeePerKW(1)
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if err != nil {
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return nil, nil, nil, err
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}
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// TODO(roasbeef): need to factor in commit fee?
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aliceCommit := channeldb.ChannelCommitment{
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CommitHeight: 0,
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LocalBalance: lnwire.NewMSatFromSatoshis(channelBal),
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RemoteBalance: lnwire.NewMSatFromSatoshis(channelBal),
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FeePerKw: btcutil.Amount(feePerKw),
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CommitFee: feePerKw.FeeForWeight(input.CommitWeight),
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CommitTx: aliceCommitTx,
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CommitSig: bytes.Repeat([]byte{1}, 71),
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}
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bobCommit := channeldb.ChannelCommitment{
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CommitHeight: 0,
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LocalBalance: lnwire.NewMSatFromSatoshis(channelBal),
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RemoteBalance: lnwire.NewMSatFromSatoshis(channelBal),
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FeePerKw: btcutil.Amount(feePerKw),
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CommitFee: feePerKw.FeeForWeight(input.CommitWeight),
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CommitTx: bobCommitTx,
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CommitSig: bytes.Repeat([]byte{1}, 71),
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}
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var chanIDBytes [8]byte
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if _, err := io.ReadFull(crand.Reader, chanIDBytes[:]); err != nil {
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return nil, nil, nil, err
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}
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shortChanID := lnwire.NewShortChanIDFromInt(
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binary.BigEndian.Uint64(chanIDBytes[:]),
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)
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aliceChannelState := &channeldb.OpenChannel{
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LocalChanCfg: aliceCfg,
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RemoteChanCfg: bobCfg,
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IdentityPub: aliceKeyPub,
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FundingOutpoint: *prevOut,
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ShortChannelID: shortChanID,
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ChanType: channeldb.SingleFunderTweaklessBit,
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IsInitiator: true,
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Capacity: channelCapacity,
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RemoteCurrentRevocation: bobCommitPoint,
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RevocationProducer: alicePreimageProducer,
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RevocationStore: shachain.NewRevocationStore(),
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LocalCommitment: aliceCommit,
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RemoteCommitment: aliceCommit,
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Db: dbAlice,
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Packager: channeldb.NewChannelPackager(shortChanID),
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FundingTxn: testTx,
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}
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bobChannelState := &channeldb.OpenChannel{
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LocalChanCfg: bobCfg,
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RemoteChanCfg: aliceCfg,
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IdentityPub: bobKeyPub,
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FundingOutpoint: *prevOut,
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ChanType: channeldb.SingleFunderTweaklessBit,
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IsInitiator: false,
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Capacity: channelCapacity,
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RemoteCurrentRevocation: aliceCommitPoint,
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RevocationProducer: bobPreimageProducer,
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RevocationStore: shachain.NewRevocationStore(),
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LocalCommitment: bobCommit,
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RemoteCommitment: bobCommit,
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Db: dbBob,
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Packager: channeldb.NewChannelPackager(shortChanID),
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}
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// Set custom values on the channel states.
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updateChan(aliceChannelState, bobChannelState)
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aliceAddr := &net.TCPAddr{
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IP: net.ParseIP("127.0.0.1"),
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Port: 18555,
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}
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if err := aliceChannelState.SyncPending(aliceAddr, 0); err != nil {
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return nil, nil, nil, err
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}
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bobAddr := &net.TCPAddr{
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IP: net.ParseIP("127.0.0.1"),
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Port: 18556,
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}
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if err := bobChannelState.SyncPending(bobAddr, 0); err != nil {
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return nil, nil, nil, err
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}
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cleanUpFunc := func() {
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os.RemoveAll(bobPath)
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os.RemoveAll(alicePath)
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}
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aliceSigner := &mock.SingleSigner{Privkey: aliceKeyPriv}
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bobSigner := &mock.SingleSigner{Privkey: bobKeyPriv}
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alicePool := lnwallet.NewSigPool(1, aliceSigner)
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channelAlice, err := lnwallet.NewLightningChannel(
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aliceSigner, aliceChannelState, alicePool,
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)
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if err != nil {
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return nil, nil, nil, err
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}
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_ = alicePool.Start()
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bobPool := lnwallet.NewSigPool(1, bobSigner)
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channelBob, err := lnwallet.NewLightningChannel(
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bobSigner, bobChannelState, bobPool,
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)
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if err != nil {
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return nil, nil, nil, err
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}
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_ = bobPool.Start()
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chainIO := &mock.ChainIO{
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BestHeight: broadcastHeight,
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}
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wallet := &lnwallet.LightningWallet{
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WalletController: &mock.WalletController{
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RootKey: aliceKeyPriv,
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PublishedTransactions: publTx,
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},
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}
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_, currentHeight, err := chainIO.GetBestBlock()
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if err != nil {
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return nil, nil, nil, err
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}
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htlcSwitch, err := htlcswitch.New(htlcswitch.Config{
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DB: dbAlice,
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SwitchPackager: channeldb.NewSwitchPackager(),
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Notifier: notifier,
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FwdEventTicker: ticker.New(
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htlcswitch.DefaultFwdEventInterval),
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LogEventTicker: ticker.New(
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htlcswitch.DefaultLogInterval),
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AckEventTicker: ticker.New(
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htlcswitch.DefaultAckInterval),
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}, uint32(currentHeight))
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if err != nil {
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return nil, nil, nil, err
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}
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if err = htlcSwitch.Start(); err != nil {
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return nil, nil, nil, err
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}
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nodeSignerAlice := netann.NewNodeSigner(aliceKeySigner)
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const chanActiveTimeout = time.Minute
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chanStatusMgr, err := netann.NewChanStatusManager(&netann.ChanStatusConfig{
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ChanStatusSampleInterval: 30 * time.Second,
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ChanEnableTimeout: chanActiveTimeout,
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ChanDisableTimeout: 2 * time.Minute,
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DB: dbAlice,
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Graph: dbAlice.ChannelGraph(),
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MessageSigner: nodeSignerAlice,
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OurPubKey: aliceKeyPub,
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IsChannelActive: htlcSwitch.HasActiveLink,
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ApplyChannelUpdate: func(*lnwire.ChannelUpdate) error { return nil },
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})
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if err != nil {
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return nil, nil, nil, err
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}
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if err = chanStatusMgr.Start(); err != nil {
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return nil, nil, nil, err
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}
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errBuffer, err := queue.NewCircularBuffer(ErrorBufferSize)
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if err != nil {
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return nil, nil, nil, err
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}
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var pubKey [33]byte
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copy(pubKey[:], aliceKeyPub.SerializeCompressed())
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cfgAddr := &lnwire.NetAddress{
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IdentityKey: aliceKeyPub,
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Address: aliceAddr,
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ChainNet: wire.SimNet,
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}
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cfg := &Config{
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Addr: cfgAddr,
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PubKeyBytes: pubKey,
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ErrorBuffer: errBuffer,
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ChainIO: chainIO,
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Switch: htlcSwitch,
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ChanActiveTimeout: chanActiveTimeout,
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InterceptSwitch: htlcswitch.NewInterceptableSwitch(htlcSwitch),
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ChannelDB: dbAlice,
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FeeEstimator: estimator,
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Wallet: wallet,
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ChainNotifier: notifier,
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ChanStatusMgr: chanStatusMgr,
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DisconnectPeer: func(b *btcec.PublicKey) error { return nil },
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}
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alicePeer := NewBrontide(*cfg)
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chanID := lnwire.NewChanIDFromOutPoint(channelAlice.ChannelPoint())
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alicePeer.activeChannels[chanID] = channelAlice
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alicePeer.wg.Add(1)
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go alicePeer.channelManager()
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return alicePeer, channelBob, cleanUpFunc, nil
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}
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type mockMessageConn struct {
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t *testing.T
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// MessageConn embeds our interface so that the mock does not need to
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// implement every function. The mock will panic if an unspecified function
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// is called.
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MessageConn
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// writtenMessages is a channel that our mock pushes written messages into.
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writtenMessages chan []byte
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}
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func newMockConn(t *testing.T, expectedMessages int) *mockMessageConn {
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return &mockMessageConn{
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t: t,
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writtenMessages: make(chan []byte, expectedMessages),
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}
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}
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// SetWriteDeadline mocks setting write deadline for our conn.
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func (m *mockMessageConn) SetWriteDeadline(time.Time) error {
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return nil
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}
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// Flush mocks a message conn flush.
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func (m *mockMessageConn) Flush() (int, error) {
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return 0, nil
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}
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// WriteMessage mocks sending of a message on our connection. It will push
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// the bytes sent into the mock's writtenMessages channel.
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func (m *mockMessageConn) WriteMessage(msg []byte) error {
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select {
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case m.writtenMessages <- msg:
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case <-time.After(timeout):
|
|
m.t.Fatalf("timeout sending message: %v", msg)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// assertWrite asserts that our mock as had WriteMessage called with the byte
|
|
// slice we expect.
|
|
func (m *mockMessageConn) assertWrite(expected []byte) {
|
|
select {
|
|
case actual := <-m.writtenMessages:
|
|
require.Equal(m.t, expected, actual)
|
|
|
|
case <-time.After(timeout):
|
|
m.t.Fatalf("timeout waiting for write: %v", expected)
|
|
}
|
|
}
|