Working code

Signed-off-by: Lee Smet <[email protected]>

go.mod

@@ -0,0 +1,22 @@
+module github.com/leesmet/signer
+
+go 1.20
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/go-chi/chi v4.0.3+incompatible // indirect
+	github.com/go-errors/errors v0.0.0-20150906023321-a41850380601 // indirect
+	github.com/gorilla/schema v1.1.0 // indirect
+	github.com/konsorten/go-windows-terminal-sequences v1.0.1 // indirect
+	github.com/manucorporat/sse v0.0.0-20160126180136-ee05b128a739 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/segmentio/go-loggly v0.5.1-0.20171222203950-eb91657e62b2 // indirect
+	github.com/sirupsen/logrus v1.4.1 // indirect
+	github.com/stellar/go v0.0.0-20230407073130-0b918125049c // indirect
+	github.com/stellar/go-xdr v0.0.0-20211103144802-8017fc4bdfee // indirect
+	github.com/stretchr/objx v0.3.0 // indirect
+	github.com/stretchr/testify v1.7.0 // indirect
+	golang.org/x/sys v0.0.0-20220227234510-4e6760a101f9 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c // indirect
+)

go.sum

@@ -0,0 +1,39 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/go-chi/chi v4.0.3+incompatible h1:gakN3pDJnzZN5jqFV2TEdF66rTfKeITyR8qu6ekICEY=
+github.com/go-chi/chi v4.0.3+incompatible/go.mod h1:eB3wogJHnLi3x/kFX2A+IbTBlXxmMeXJVKy9tTv1XzQ=
+github.com/go-errors/errors v0.0.0-20150906023321-a41850380601 h1:jxTbmDuqQUTI6MscgbqB39vtxGfr2fi61nYIcFQUnlE=
+github.com/go-errors/errors v0.0.0-20150906023321-a41850380601/go.mod h1:f4zRHt4oKfwPJE5k8C9vpYG+aDHdBFUsgrm6/TyX73Q=
+github.com/gorilla/schema v1.1.0 h1:CamqUDOFUBqzrvxuz2vEwo8+SUdwsluFh7IlzJh30LY=
+github.com/gorilla/schema v1.1.0/go.mod h1:kgLaKoK1FELgZqMAVxx/5cbj0kT+57qxUrAlIO2eleU=
+github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk=
+github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
+github.com/manucorporat/sse v0.0.0-20160126180136-ee05b128a739 h1:ykXz+pRRTibcSjG1yRhpdSHInF8yZY/mfn+Rz2Nd1rE=
+github.com/manucorporat/sse v0.0.0-20160126180136-ee05b128a739/go.mod h1:zUx1mhth20V3VKgL5jbd1BSQcW4Fy6Qs4PZvQwRFwzM=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/segmentio/go-loggly v0.5.1-0.20171222203950-eb91657e62b2 h1:S4OC0+OBKz6mJnzuHioeEat74PuQ4Sgvbf8eus695sc=
+github.com/segmentio/go-loggly v0.5.1-0.20171222203950-eb91657e62b2/go.mod h1:8zLRYR5npGjaOXgPSKat5+oOh+UHd8OdbS18iqX9F6Y=
+github.com/sirupsen/logrus v1.4.1 h1:GL2rEmy6nsikmW0r8opw9JIRScdMF5hA8cOYLH7In1k=
+github.com/sirupsen/logrus v1.4.1/go.mod h1:ni0Sbl8bgC9z8RoU9G6nDWqqs/fq4eDPysMBDgk/93Q=
+github.com/stellar/go v0.0.0-20230407073130-0b918125049c h1:Sxfmay34A1CCUB4ty8rTbptFuy0PB1KPj30CheQOOc8=
+github.com/stellar/go v0.0.0-20230407073130-0b918125049c/go.mod h1:DHmAo7QjGEJa0yef6NXOh+083h/S6OsdRhOwav6Om1A=
+github.com/stellar/go-xdr v0.0.0-20211103144802-8017fc4bdfee h1:fbVs0xmXpBvVS4GBeiRmAE3Le70ofAqFMch1GTiq/e8=
+github.com/stellar/go-xdr v0.0.0-20211103144802-8017fc4bdfee/go.mod h1:yoxyU/M8nl9LKeWIoBrbDPQ7Cy+4jxRcWcOayZ4BMps=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.3.0 h1:NGXK3lHquSN08v5vWalVI/L8XU9hdzE/G6xsrze47As=
+github.com/stretchr/objx v0.3.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20220227234510-4e6760a101f9 h1:nhht2DYV/Sn3qOayu8lM+cU1ii9sTLUeBQwQQfUHtrs=
+golang.org/x/sys v0.0.0-20220227234510-4e6760a101f9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

main.go

@@ -0,0 +1,189 @@
+package main
+
+import (
+	"bufio"
+	"encoding/hex"
+	"flag"
+	"fmt"
+	"io"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/pkg/errors"
+	"github.com/stellar/go/clients/horizonclient"
+	"github.com/stellar/go/keypair"
+	"github.com/stellar/go/network"
+	"github.com/stellar/go/txnbuild"
+)
+
+var (
+	inputFile    string
+	outputFile   string
+	preview      bool
+	submit       bool
+	walletsecret string
+)
+
+func init() {
+	flag.StringVar(&inputFile, "inputfile", "payouts_to_sign.txt", "File with transactions to sign")
+	flag.StringVar(&outputFile, "outputfile", "payouts_signed.txt", "File to place signed transactions")
+	flag.BoolVar(&preview, "preview", false, "Print transactions before signing")
+	flag.BoolVar(&submit, "submit", false, "Submit transactions to the network after signing")
+	flag.StringVar(&walletsecret, "wallet-secret", "", "Secret key of the wallet to sign the transactions with")
+}
+
+func main() {
+	flag.Parse()
+
+	if walletsecret == "" {
+		panic("wallet secret is required")
+	}
+
+	wallet, err := newWallet(walletsecret)
+	if err != nil {
+		panic("wallet secret is not valid")
+	}
+
+	horizon := horizonclient.DefaultPublicNetClient
+
+	infile, err := os.Open(inputFile)
+	if err != nil {
+		panic(fmt.Sprintf("Failed to open payouts input file %s", err))
+	}
+	reader := bufio.NewReader(infile)
+	defer infile.Close()
+
+	outFile, err := os.Create(outputFile)
+	if err != nil {
+		panic(fmt.Sprintf("Failed to open payouts output file %s", err))
+	}
+	defer outFile.Close()
+	defer outFile.Sync()
+
+	for {
+		line, err := reader.ReadString('\n')
+		if err != nil {
+			if errors.Is(err, io.EOF) {
+				break
+			}
+			panic(err)
+		}
+		if line == "" {
+			break
+		}
+
+		xdr := strings.TrimSpace(line)
+
+		txn := &txnbuild.Transaction{}
+		if err = txn.UnmarshalText([]byte(xdr)); err != nil {
+			panic("Cant unmarshal transaction")
+		}
+
+		if err = basicValidation(txn); err != nil {
+			panic("transaction validation failed")
+		}
+
+		if preview {
+			previewTxn(txn)
+			continue
+		}
+
+		txn, err = wallet.Sign(txn)
+		if err != nil {
+			panic("could not sign transaction")
+		}
+
+		if submit {
+			for {
+				previewTxn(txn)
+				_, err := horizon.SubmitTransaction(txn)
+				if err != nil {
+					if err, ok := err.(*horizonclient.Error); ok {
+						// Horizon timeout
+						if err.Response.StatusCode == 504 {
+							fmt.Println("Horizon timeout, retry request in 15 seconds")
+							time.Sleep(time.Second * 15)
+							continue
+						} else if err.Response.StatusCode == 404 {
+							fmt.Println("ERROR: Account does not exist", err)
+							break
+						}
+						if resCodes, ok := err.Problem.Extras["result_codes"]; ok {
+							if resMap, ok := resCodes.(map[string]string); ok {
+								if v, exists := resMap["operations"]; exists {
+									if strings.Contains(v, "tx_insufficient_fee") {
+										fmt.Println("Tx insufficient fee, retry in 30 seconds")
+										time.Sleep(time.Second * 30)
+										continue
+									} else if strings.Contains(v, "op_no_destination") {
+										fmt.Println("ERROR: Account does not exsit")
+										break
+									}
+								}
+
+							}
+						}
+						fmt.Println(err)
+						time.Sleep(time.Second * 60)
+						continue
+
+					}
+					fmt.Println("ERROR", err)
+					time.Sleep(time.Second * 60)
+					continue
+				}
+				break
+			}
+		} else {
+			xdr, err := txn.MarshalText()
+			if err != nil {
+				panic(err)
+			}
+			outFile.WriteString(string(xdr))
+			outFile.WriteString("\n")
+		}
+	}
+
+}
+
+func basicValidation(txn *txnbuild.Transaction) error {
+	if _, ok := txn.Memo().(txnbuild.MemoHash); !ok {
+		return errors.New("memo must be of type memo_hash")
+	}
+	if len(txn.Operations()) != 1 {
+		return errors.New("transaction must contain a single operation")
+	}
+	if _, ok := txn.Operations()[0].(*txnbuild.Payment); !ok {
+		return errors.New("transaction operation must be of type Payment")
+	}
+	return nil
+}
+
+func previewTxn(txn *txnbuild.Transaction) {
+	rawMemo := txn.Memo().(txnbuild.MemoHash)
+	memo := hex.EncodeToString(rawMemo[:])
+	sequence := txn.SequenceNumber()
+	paymentOp := txn.Operations()[0].(*txnbuild.Payment)
+	asset := paymentOp.Asset
+	amount := paymentOp.Amount
+	dest := paymentOp.Destination
+	sigs := len(txn.Signatures())
+	fmt.Printf("Sending %s %s to %s with memo %s (%d signatures, %d seqno)\n", amount, asset, dest, memo, sigs, sequence)
+}
+
+type Wallet struct {
+	keypair *keypair.Full
+}
+
+func newWallet(privateKey string) (*Wallet, error) {
+	kp, err := keypair.ParseFull(privateKey)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not parse private key")
+	}
+	return &Wallet{keypair: kp}, nil
+}
+
+func (w *Wallet) Sign(txn *txnbuild.Transaction) (*txnbuild.Transaction, error) {
+	return txn.Sign(network.PublicNetworkPassphrase, w.keypair)
+}