Add support for Binance Chain

go.mod

@@ -3,9 +3,11 @@ module github.com/renproject/mercury
 go 1.12
 
 require (
+	github.com/VividCortex/gohistogram v1.0.0 // indirect
 	github.com/allegro/bigcache v1.2.1 // indirect
 	github.com/apilayer/freegeoip v3.5.0+incompatible // indirect
 	github.com/aristanetworks/goarista v0.0.0-20190712234253-ed1100a1c015 // indirect
+	github.com/binance-chain/go-sdk v1.0.8
 	github.com/btcsuite/btcd v0.0.0-20190807005414-4063feeff79a
 	github.com/btcsuite/btcutil v0.0.0-20190425235716-9e5f4b9a998d
 	github.com/cespare/cp v1.1.1 // indirect
@@ -16,24 +18,26 @@ require (
 	github.com/elastic/gosigar v0.10.4 // indirect
 	github.com/ethereum/go-ethereum v1.9.2
 	github.com/fjl/memsize v0.0.0-20190710130421-bcb5799ab5e5 // indirect
+	github.com/fortytw2/leaktest v1.3.0 // indirect
 	github.com/gballet/go-libpcsclite v0.0.0-20190607065134-2772fd86a8ff // indirect
 	github.com/golang/protobuf v1.3.2 // indirect
+	github.com/google/gofuzz v1.0.0 // indirect
 	github.com/gorilla/mux v1.7.3
-	github.com/gorilla/websocket v1.4.0 // indirect
 	github.com/graph-gophers/graphql-go v0.0.0-20190724201507-010347b5f9e6 // indirect
 	github.com/hashicorp/golang-lru v0.5.3 // indirect
 	github.com/howeyc/fsnotify v0.9.0 // indirect
 	github.com/huin/goupnp v1.0.0 // indirect
 	github.com/influxdata/influxdb v1.7.7 // indirect
 	github.com/jackpal/go-nat-pmp v1.0.1 // indirect
+	github.com/jmhodges/levigo v1.0.0 // indirect
 	github.com/karalabe/usb v0.0.0-20190819132248-550797b1cad8 // indirect
 	github.com/mattn/go-colorable v0.1.2 // indirect
 	github.com/mattn/go-isatty v0.0.9 // indirect
 	github.com/mattn/go-runewidth v0.0.4 // indirect
 	github.com/miguelmota/go-ethereum-hdwallet v0.0.0-20190720004541-5f6b3168e4a0
 	github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826 // indirect
 	github.com/olekukonko/tablewriter v0.0.1 // indirect
-	github.com/onsi/ginkgo v1.9.0
+	github.com/onsi/ginkgo v1.10.1
 	github.com/onsi/gomega v1.6.0
 	github.com/oschwald/maxminddb-golang v1.3.1 // indirect
 	github.com/pborman/uuid v1.2.0 // indirect
@@ -48,6 +52,8 @@ require (
 	github.com/steakknife/bloomfilter v0.0.0-20180922174646-6819c0d2a570 // indirect
 	github.com/steakknife/hamming v0.0.0-20180906055917-c99c65617cd3 // indirect
 	github.com/syndtr/goleveldb v1.0.1-0.20190318030020-c3a204f8e965 // indirect
+	github.com/tendermint/btcd v0.0.0-20180816174608-e5840949ff4f
+	github.com/tendermint/tendermint v0.31.2-rc0
 	github.com/tyler-smith/go-bip39 v1.0.2
 	github.com/wsddn/go-ecdh v0.0.0-20161211032359-48726bab9208 // indirect
 	golang.org/x/crypto v0.0.0-20190820162420-60c769a6c586
@@ -56,3 +62,5 @@ require (
 	gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce // indirect
 	gopkg.in/olebedev/go-duktape.v3 v3.0.0-20190709231704-1e4459ed25ff // indirect
 )
+
+replace github.com/tendermint/go-amino => github.com/binance-chain/bnc-go-amino v0.14.1-binance.1

sdk/client/bncclient/bncclient.go

@@ -0,0 +1,139 @@
+package bncclient
+
+import (
+	"encoding/hex"
+	"fmt"
+
+	"github.com/binance-chain/go-sdk/client/basic"
+	"github.com/binance-chain/go-sdk/client/query"
+	"github.com/binance-chain/go-sdk/client/websocket"
+	"github.com/binance-chain/go-sdk/types/msg"
+	"github.com/binance-chain/go-sdk/types/tx"
+	"github.com/renproject/mercury/types"
+	"github.com/renproject/mercury/types/bnctypes"
+)
+
+type Client interface {
+	PrintTime()
+	Balances(from bnctypes.Address) (bnctypes.Coins, error)
+	Mint(from bnctypes.Address, coin bnctypes.Coin) (types.Tx, error)
+	Burn(from bnctypes.Address, coin bnctypes.Coin) (types.Tx, error)
+	Send(from bnctypes.Address, recipients bnctypes.Recipients) (types.Tx, error)
+	SubmitTx(tx types.Tx) error
+}
+
+type client struct {
+	network     bnctypes.Network
+	queryClient query.QueryClient
+	basicClient basic.BasicClient
+	wsClient    websocket.WSClient
+}
+
+func New(network bnctypes.Network) Client {
+	var baseURL string
+	switch network {
+	case bnctypes.Mainnet:
+		baseURL = "dex.binance.org"
+	case bnctypes.Testnet:
+		baseURL = "testnet-dex.binance.org"
+	default:
+		panic(types.ErrUnknownNetwork)
+	}
+
+	c := basic.NewClient(baseURL)
+	return &client{
+		network:     network,
+		basicClient: c,
+		queryClient: query.NewClient(c),
+		wsClient:    websocket.NewClient(c),
+	}
+}
+
+func (client *client) PrintTime() {
+	t, err := client.queryClient.GetTime()
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+	fmt.Println(t.ApTime, t.BlockTime)
+}
+
+func (client *client) Mint(from bnctypes.Address, coin bnctypes.Coin) (types.Tx, error) {
+	return client.BuildTx(from, msg.NewMintMsg(
+		from.AccAddress(),
+		coin.Denom,
+		coin.Amount,
+	))
+}
+
+func (client *client) Burn(from bnctypes.Address, coin bnctypes.Coin) (types.Tx, error) {
+	return client.BuildTx(from, msg.NewTokenBurnMsg(
+		from.AccAddress(),
+		coin.Denom,
+		coin.Amount,
+	))
+}
+
+func (client *client) Balances(from bnctypes.Address) (bnctypes.Coins, error) {
+	acc, err := client.queryClient.GetAccount(from.String())
+	if err != nil {
+		return nil, err
+	}
+	balances := make([]bnctypes.Coin, len(acc.Balances))
+	for i := range balances {
+		balances[i] = bnctypes.Coin{
+			Denom:  acc.Balances[i].Symbol,
+			Amount: acc.Balances[i].Free.ToInt64(),
+		}
+	}
+	return bnctypes.NewCoins(balances...), nil
+}
+
+func (client *client) Send(from bnctypes.Address, recipients bnctypes.Recipients) (types.Tx, error) {
+	return client.BuildTx(from, recipients.SendTx(from))
+}
+
+func (client *client) BuildTx(from bnctypes.Address, m msg.Msg) (types.Tx, error) {
+	acc, err := client.queryClient.GetAccount(from.String())
+	if err != nil {
+		return nil, err
+	}
+
+	// prepare message to sign
+	signMsg := tx.StdSignMsg{
+		ChainID:       client.network.ChainID(),
+		AccountNumber: acc.Number,
+		Sequence:      acc.Sequence,
+		Memo:          "",
+		Msgs:          []msg.Msg{m},
+		Source:        tx.Source,
+	}
+
+	// special logic for createOrder, to save account query
+	if orderMsg, ok := m.(msg.CreateOrderMsg); ok {
+		orderMsg.ID = msg.GenerateOrderID(signMsg.Sequence+1, from.AccAddress())
+		signMsg.Msgs[0] = orderMsg
+	}
+
+	// validate messages
+	for _, m := range signMsg.Msgs {
+		if err := m.ValidateBasic(); err != nil {
+			return nil, err
+		}
+	}
+
+	return bnctypes.NewTx(signMsg), nil
+}
+
+func (client *client) SubmitTx(tx types.Tx) error {
+	stx, err := tx.Serialize()
+	if err != nil {
+		return err
+	}
+	params := map[string]string{}
+	params["sync"] = "true"
+	if _, err := client.basicClient.PostTx([]byte(hex.EncodeToString(stx)), params); err != nil {
+		return err
+	}
+	return nil
+}

sdk/client/bncclient/bncclient_suite_test.go

@@ -0,0 +1,13 @@
+package bncclient_test
+
+import (
+	"testing"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+func TestBncclient(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Bncclient Suite")
+}

sdk/client/bncclient/bncclient_test.go

@@ -0,0 +1,43 @@
+package bncclient_test
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+	. "github.com/renproject/mercury/sdk/client/bncclient"
+	"github.com/renproject/mercury/types/bnctypes"
+)
+
+var _ = Describe("bnc client", func() {
+	Context("when communicating with the testnet", func() {
+		It("should print the current time", func() {
+			client := New(bnctypes.Testnet)
+			client.PrintTime()
+		})
+
+		It("should get the correct balance of an address", func() {
+			privKey, err := crypto.HexToECDSA(os.Getenv("BNB_PRIVATE_KEY"))
+			Expect(err).Should(BeNil())
+			address := bnctypes.AddressFromPubKey(privKey.PublicKey, bnctypes.Testnet)
+			Expect(err).Should(BeNil())
+			fmt.Println(address)
+			client := New(bnctypes.Testnet)
+			client.Balances(bnctypes.Address(address))
+		})
+
+		It("should transfer 0.001", func() {
+			privKey, err := crypto.HexToECDSA(os.Getenv("BNB_PRIVATE_KEY"))
+			Expect(err).Should(BeNil())
+			address := bnctypes.AddressFromPubKey(privKey.PublicKey, bnctypes.Testnet)
+			Expect(err).Should(BeNil())
+			client := New(bnctypes.Testnet)
+			tx, err := client.Send(address, bnctypes.Recipients{bnctypes.NewRecipent(address, bnctypes.NewBNBCoin(1000000))})
+			Expect(err).Should(BeNil())
+			tx.Sign(privKey)
+			Expect(client.SubmitTx(tx)).Should(BeNil())
+		})
+	})
+})

testutil/btcaccount/btcaccount.go

@@ -100,7 +100,7 @@ func (acc *account) Transfer(ctx context.Context, to btctypes.Address, value btc
 		return "", fmt.Errorf("error fetching utxos: %v", err)
 	}
 
-	fee := acc.Client.SuggestGasPrice(context.Background(), speed, acc.Client.EstimateTxSize(len(utxos), 2))
+	fee := 10000 * btctypes.SAT
 	if all {
 		value = utxos.Sum() - fee
 	}

types/bnctypes/address.go

@@ -0,0 +1,71 @@
+package bnctypes
+
+import (
+	"crypto/ecdsa"
+	"encoding/hex"
+
+	"github.com/binance-chain/go-sdk/common/types"
+	"github.com/binance-chain/go-sdk/types/msg"
+	"github.com/btcsuite/btcd/btcec"
+	"github.com/btcsuite/btcutil"
+)
+
+type Recipient struct {
+	Address Address
+	Coins   Coins
+}
+
+type Recipients []Recipient
+
+type Address struct {
+	Network    Network
+	PubKeyHash []byte
+}
+
+func (recipients Recipients) SendTx(from Address) msg.SendMsg {
+	types.Network = from.Network.ChainNetwork()
+	var inputCoins types.Coins
+	ops := make([]msg.Output, len(recipients))
+	for i, recipient := range recipients {
+		ops[i] = msg.Output{
+			Address: recipient.Address.AccAddress(),
+			Coins:   types.Coins(recipient.Coins),
+		}
+		ops[i].Coins = ops[i].Coins.Sort()
+		inputCoins = inputCoins.Plus(ops[i].Coins)
+	}
+	ips := []msg.Input{{Address: from.AccAddress(), Coins: inputCoins}}
+	return msg.SendMsg{Inputs: ips, Outputs: ops}
+}
+
+func AddressFromBech32(address string, network Network) (Address, error) {
+	types.Network = network.ChainNetwork()
+	accAddr, err := types.AccAddressFromBech32(address)
+	if err != nil {
+		return Address{}, err
+	}
+	return Address{PubKeyHash: accAddr, Network: network}, nil
+}
+
+func AddressFromHex(address string, network Network) (Address, error) {
+	pkh, err := hex.DecodeString(address)
+	if err != nil {
+		return Address{}, err
+	}
+	return Address{PubKeyHash: pkh, Network: network}, nil
+}
+
+func AddressFromPubKey(pubKey ecdsa.PublicKey, network Network) Address {
+	pkHash := btcutil.Hash160((*btcec.PublicKey)(&pubKey).SerializeCompressed())
+	return Address{network, pkHash}
+}
+
+func (addr Address) AccAddress() types.AccAddress {
+	types.Network = addr.Network.ChainNetwork()
+	return types.AccAddress(addr.PubKeyHash)
+}
+
+func (addr Address) String() string {
+	types.Network = addr.Network.ChainNetwork()
+	return types.AccAddress(addr.PubKeyHash).String()
+}