Add FLO support

go.mod

@@ -3,6 +3,8 @@ module github.com/renproject/multichain
 go 1.14
 
 require (
+	github.com/bitspill/flod v0.0.0-20200117025253-bf2a74ee75ee
+	github.com/bitspill/floutil v0.0.0-20180525171018-986e42f96cdb
 	github.com/btcsuite/btcd v0.21.0-beta
 	github.com/btcsuite/btcutil v1.0.2
 	github.com/codahale/blake2 v0.0.0-20150924215134-8d10d0420cbf

go.sum

@@ -86,6 +86,7 @@ github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYU
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/apache/thrift v0.12.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
 github.com/apache/thrift v0.13.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
+github.com/aristanetworks/goarista v0.0.0-20170210015632-ea17b1a17847 h1:rtI0fD4oG/8eVokGVPYJEW1F88p1ZNgXiEIs9thEE4A=
 github.com/aristanetworks/goarista v0.0.0-20170210015632-ea17b1a17847/go.mod h1:D/tb0zPVXnP7fmsLZjtdUhSsumbK/ij54UXjjVgMGxQ=
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
@@ -111,6 +112,10 @@ github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bgentry/speakeasy v0.1.0 h1:ByYyxL9InA1OWqxJqqp2A5pYHUrCiAL6K3J+LKSsQkY=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
+github.com/bitspill/flod v0.0.0-20200117025253-bf2a74ee75ee h1:476ERazmPwtjvvql0dnhuOzf/kUrLamIroxN4A28fS8=
+github.com/bitspill/flod v0.0.0-20200117025253-bf2a74ee75ee/go.mod h1:LetTvR2HhZ+uZu1uLNpgojvBZLlbrl/Hc/PF3fSButU=
+github.com/bitspill/floutil v0.0.0-20180525171018-986e42f96cdb h1:lh+MYkoOjrNMjvc3EZZjHDupTt/ZXhDlsowEWkeQ+dY=
+github.com/bitspill/floutil v0.0.0-20180525171018-986e42f96cdb/go.mod h1:q+n3qEcw8dizD/RCkEpKMnDsjnNSDP9V8Bq0//zeuoI=
 github.com/bradfitz/go-smtpd v0.0.0-20170404230938-deb6d6237625/go.mod h1:HYsPBTaaSFSlLx/70C2HPIMNZpVV8+vt/A+FMnYP11g=
 github.com/briandowns/spinner v1.11.1/go.mod h1:QOuQk7x+EaDASo80FEXwlwiA+j/PPIcX3FScO+3/ZPQ=
 github.com/btcsuite/btcd v0.0.0-20171128150713-2e60448ffcc6/go.mod h1:Dmm/EzmjnCiweXmzRIAiUWCInVmPgjkzgv5k4tVyXiQ=
@@ -206,6 +211,7 @@ github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
 github.com/davidlazar/go-crypto v0.0.0-20170701192655-dcfb0a7ac018/go.mod h1:rQYf4tfk5sSwFsnDg3qYaBxSjsD9S8+59vW0dKUgme4=
 github.com/davidlazar/go-crypto v0.0.0-20190912175916-7055855a373f h1:BOaYiTvg8p9vBUXpklC22XSK/mifLF7lG9jtmYYi3Tc=
 github.com/davidlazar/go-crypto v0.0.0-20190912175916-7055855a373f/go.mod h1:rQYf4tfk5sSwFsnDg3qYaBxSjsD9S8+59vW0dKUgme4=
+github.com/deckarep/golang-set v0.0.0-20180603214616-504e848d77ea h1:j4317fAZh7X6GqbFowYdYdI0L9bwxL07jyPZIdepyZ0=
 github.com/deckarep/golang-set v0.0.0-20180603214616-504e848d77ea/go.mod h1:93vsz/8Wt4joVM7c2AVqh+YRMiUSc14yDtF28KmMOgQ=
 github.com/decred/dcrd/lru v1.0.0/go.mod h1:mxKOwFd7lFjN2GZYsiz/ecgqR6kkYAl+0pz0tEMk218=
 github.com/detailyang/go-fallocate v0.0.0-20180908115635-432fa640bd2e h1:lj77EKYUpYXTd8CD/+QMIf8b6OIOTsfEBSXiAzuEHTU=

infra/.env

@@ -58,6 +58,12 @@ export ETHEREUM_ADDRESS=0xa0df350d2637096571F7A701CBc1C5fdE30dF76A
 export FILECOIN_PK=7b2254797065223a22736563703235366b31222c22507269766174654b6579223a22756d6a634e436a487a5438455757485849754a4c4b58745035437153323435666238626c656c756e5448493d227d
 export FILECOIN_ADDRESS=f1ej2tountzqwnu6uswhqdzvw6yy5xvcig6rxl2qa
 
+#
+# Flo
+#
+export FLO_PK=cUfPG4c87ZhNjTWmiABHapCvwj4N11KYwLsK9FQCa6oXpWz6MEjv
+export FLO_ADDRESS=oYtdP8ahWoetwBrkNz4AZrHu2FTFhhzL83
+
 #
 # Terra
 #

infra/docker-compose.yaml

@@ -112,6 +112,19 @@ services:
     entrypoint:
       - "/root/run.sh"
 
+  #
+  # Flo
+  #
+  flo:
+    build:
+      context: ./flo
+    ports:
+      - "0.0.0.0:8333:8333"
+    entrypoint:
+      - "./root/run.sh"
+      - "${FLO_ADDRESS}"
+
+
   #
   # Solana
   #

infra/flo/Dockerfile

@@ -0,0 +1,16 @@
+FROM ubuntu:xenial
+
+RUN apt-get update --fix-missing && apt-get install --yes software-properties-common wget
+
+RUN wget -c https://github.com/floblockchain/flo/releases/download/v0.15.2.1/flo-0.15.2-x86_64-linux-gnu.tar.gz -O - | tar xz
+RUN mv ./flo-0.15.2 /app
+RUN chmod +x /app/bin/flod
+RUN chmod +x /app/bin/flo-cli
+
+COPY flo.conf /root/.flo/flo.conf
+COPY run.sh /root/run.sh
+RUN chmod +x /root/run.sh
+
+EXPOSE 8333
+
+ENTRYPOINT ["./root/run.sh"]

infra/flo/flo.conf

@@ -0,0 +1,12 @@
+daemon=1
+regtest=1
+rpcuser=user
+rpcpassword=password
+rpcallowip=0.0.0.0/0
+rpcport=8333
+server=1
+txindex=1
+
+[regtest]
+rpcbind=0.0.0.0
+

infra/flo/keygen.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"fmt"
+	"github.com/bitspill/flod/floec"
+	"github.com/bitspill/floutil"
+
+	"github.com/renproject/id"
+	"github.com/renproject/multichain/chain/flo"
+)
+
+func main() {
+	privKey := id.NewPrivKey()
+	wif, err := floutil.NewWIF((*floec.PrivateKey)(privKey), &flo.RegressionNetParams, true)
+	if err != nil {
+		panic(err)
+	}
+	addrPubKeyHash, err := floutil.NewAddressPubKeyHash(floutil.Hash160(wif.SerializePubKey()), &flo.RegressionNetParams)
+	if err != nil {
+		panic(err)
+	}
+	fmt.Printf("FLO_PK=%v\n", wif)
+	fmt.Printf("FLO_ADDRESS=%v\n", addrPubKeyHash)
+}

infra/flo/run.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+ADDRESS=$1
+
+# Start
+/app/bin/flod -conf=/root/.flo/flo.conf # -server -rpcbind=0.0.0.0 -rpcallowip=0.0.0.0/0 -rpcuser=user -rpcpassword=password
+sleep 10
+
+
+# Print setup
+echo "FLO_ADDRESS=$ADDRESS"
+
+# Import the address
+/app/bin/flo-cli importaddress $ADDRESS
+
+echo "done"
+
+# Generate enough block to pass the maturation time
+/app/bin/flo-cli generatetoaddress 101 $ADDRESS
+
+# Simulate mining
+while :
+do
+    /app/bin/flo-cli generatetoaddress 1 $ADDRESS
+    sleep 10
+done

multichain.go

@@ -107,6 +107,7 @@ const (
 	DOGE = Asset("DOGE") // Dogecoin
 	ETH  = Asset("ETH")  // Ether
 	FIL  = Asset("FIL")  // Filecoin
+	FLO  = Asset("FLO")  // Flo
 	FTM  = Asset("FTM")  // Fantom
 	SOL  = Asset("SOL")  // Solana
 	LUNA = Asset("LUNA") // Luna
@@ -140,6 +141,8 @@ func (asset Asset) OriginChain() Chain {
 		return Ethereum
 	case FIL:
 		return Filecoin
+	case FLO:
+		return Flo
 	case FTM:
 		return Fantom
 	case LUNA:
@@ -167,7 +170,7 @@ func (asset Asset) OriginChain() Chain {
 // ChainType returns the chain-type (Account or UTXO) for the given asset
 func (asset Asset) ChainType() ChainType {
 	switch asset {
-	case BCH, BTC, DGB, DOGE, ZEC:
+	case BCH, BTC, DGB, DOGE, FLO, ZEC:
 		return ChainTypeUTXOBased
 	case BNB, ETH, FIL, LUNA:
 		return ChainTypeAccountBased
@@ -218,6 +221,7 @@ const (
 	Ethereum          = Chain("Ethereum")
 	Fantom            = Chain("Fantom")
 	Filecoin          = Chain("Filecoin")
+	Flo               = Chain("Flo")
 	Solana            = Chain("Solana")
 	Terra             = Chain("Terra")
 	Zcash             = Chain("Zcash")
@@ -252,7 +256,7 @@ func (chain *Chain) Unmarshal(buf []byte, rem int) ([]byte, int, error) {
 // for the chain.
 func (chain Chain) ChainType() ChainType {
 	switch chain {
-	case Bitcoin, BitcoinCash, DigiByte, Dogecoin, Zcash:
+	case Bitcoin, BitcoinCash, DigiByte, Dogecoin, Flo, Zcash:
 		return ChainTypeUTXOBased
 	case BinanceSmartChain, Ethereum, Filecoin, Terra:
 		return ChainTypeAccountBased
@@ -300,6 +304,8 @@ func (chain Chain) NativeAsset() Asset {
 		return ETH
 	case Filecoin:
 		return FIL
+	case Flo:
+		return FLO
 	case Terra:
 		return LUNA
 	case Zcash:

multichain_test.go

@@ -6,6 +6,7 @@ import (
 	"encoding/hex"
 	"encoding/json"
 	"fmt"
+	"github.com/bitspill/flod/floec"
 	"math/rand"
 	"os"
 	"os/exec"
@@ -14,6 +15,8 @@ import (
 	"testing/quick"
 	"time"
 
+	flochaincfg "github.com/bitspill/flod/chaincfg"
+	"github.com/bitspill/floutil"
 	"github.com/btcsuite/btcd/btcec"
 	"github.com/btcsuite/btcd/chaincfg"
 	"github.com/btcsuite/btcd/txscript"
@@ -30,6 +33,7 @@ import (
 	// "github.com/renproject/multichain/chain/digibyte"
 	"github.com/renproject/multichain/chain/dogecoin"
 	"github.com/renproject/multichain/chain/filecoin"
+	"github.com/renproject/multichain/chain/flo"
 	"github.com/renproject/multichain/chain/terra"
 	"github.com/renproject/multichain/chain/zcash"
 	"github.com/renproject/pack"
@@ -147,6 +151,61 @@ var _ = Describe("Multichain", func() {
 					return multichain.RawAddress([]byte{})
 				},
 			},
+			{
+				multichain.Flo,
+				func() multichain.AddressEncodeDecoder {
+					addrEncodeDecoder := flo.NewAddressEncodeDecoder(&flochaincfg.RegressionNetParams)
+					return addrEncodeDecoder
+				},
+				func() multichain.Address {
+					// Generate a random SECP256K1 private key.
+					pk := id.NewPrivKey()
+					// Get flo WIF private key with the pub key configured to be in
+					// the compressed form.
+					wif, err := floutil.NewWIF((*floec.PrivateKey)(pk), &flochaincfg.RegressionNetParams, true)
+					Expect(err).NotTo(HaveOccurred())
+					addrPubKeyHash, err := floutil.NewAddressPubKeyHash(floutil.Hash160(wif.SerializePubKey()), &flochaincfg.RegressionNetParams)
+					Expect(err).NotTo(HaveOccurred())
+					// Return the human-readable encoded flo address in base58 format.
+					return multichain.Address(addrPubKeyHash.EncodeAddress())
+				},
+				func() multichain.RawAddress {
+					// Generate a random SECP256K1 private key.
+					pk := id.NewPrivKey()
+					// Get flo WIF private key with the pub key configured to be in
+					// the compressed form.
+					wif, err := floutil.NewWIF((*floec.PrivateKey)(pk), &flochaincfg.RegressionNetParams, true)
+					Expect(err).NotTo(HaveOccurred())
+					// Get the address pubKey hash. This is the most commonly used format
+					// for a flo address.
+					addrPubKeyHash, err := floutil.NewAddressPubKeyHash(floutil.Hash160(wif.SerializePubKey()), &flochaincfg.RegressionNetParams)
+					Expect(err).NotTo(HaveOccurred())
+					// Encode into the checksummed base58 format.
+					encoded := addrPubKeyHash.EncodeAddress()
+					return multichain.RawAddress(pack.Bytes(base58.Decode(encoded)))
+				},
+				func() multichain.Address {
+					// Random bytes of script.
+					script := make([]byte, r.Intn(100))
+					r.Read(script)
+					// Create address script hash from the random script bytes.
+					addrScriptHash, err := floutil.NewAddressScriptHash(script, &flochaincfg.RegressionNetParams)
+					Expect(err).NotTo(HaveOccurred())
+					// Return in human-readable encoded form.
+					return multichain.Address(addrScriptHash.EncodeAddress())
+				},
+				func() multichain.RawAddress {
+					// Random bytes of script.
+					script := make([]byte, r.Intn(100))
+					r.Read(script)
+					// Create address script hash from the random script bytes.
+					addrScriptHash, err := floutil.NewAddressScriptHash(script, &flochaincfg.RegressionNetParams)
+					Expect(err).NotTo(HaveOccurred())
+					// Encode to the checksummed base58 format.
+					encoded := addrScriptHash.EncodeAddress()
+					return multichain.RawAddress(pack.Bytes(base58.Decode(encoded)))
+				},
+			},
 			{
 				multichain.Terra,
 				func() multichain.AddressEncodeDecoder {