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transaction.go
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transaction.go
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package tron
import (
"crypto/sha256"
"github.com/btcsuite/btcd/btcec/v2"
"github.com/ethereum/go-ethereum/crypto"
"github.com/fbsobreira/gotron-sdk/pkg/client"
"github.com/fbsobreira/gotron-sdk/pkg/proto/api"
"github.com/pkg/errors"
"google.golang.org/protobuf/proto"
)
type transaction struct {
client *client.GrpcClient
keys *privateKey
}
func newTransaction(client *client.GrpcClient, keys *privateKey) *transaction {
return &transaction{
client: client,
keys: keys,
}
}
func (inst *transaction) BroadcastWithSign(tx *api.TransactionExtention, operator Address, permissionId int32) (err error) {
if permissionId > 0 {
tx.Transaction.RawData.Contract[0].PermissionId = permissionId
_ = inst.client.UpdateHash(tx)
}
err = inst.AppendSign(tx, operator)
if err != nil {
err = errors.Wrap(err, "sign fail")
return
}
err = inst.Broadcast(tx)
return
}
func (inst *transaction) Broadcast(tx *api.TransactionExtention) (err error) {
result, err := inst.client.Broadcast(tx.Transaction)
if err != nil {
return
}
if !result.GetResult() {
err = errors.New(string(result.GetMessage()))
return
}
return
}
func (inst *transaction) Sign(tx *api.TransactionExtention, operator Address) (signature []byte, err error) {
rawData, err := proto.Marshal(tx.Transaction.GetRawData())
if err != nil {
return
}
h256h := sha256.New()
h256h.Write(rawData)
hash := h256h.Sum(nil)
key, err := inst.keys.Get(operator)
if err != nil {
return
}
// btcec.PrivKeyFromBytes only returns a secret key and public key
sk, _ := btcec.PrivKeyFromBytes(key)
signature, err = crypto.Sign(hash, sk.ToECDSA())
return
}
func (inst *transaction) AppendSign(tx *api.TransactionExtention, operator Address) (err error) {
signature, err := inst.Sign(tx, operator)
if err != nil {
return
}
tx.Transaction.Signature = append(tx.Transaction.Signature, signature)
return
}