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- // Copyright 2016 The go-ethereum Authors
- // This file is part of the go-ethereum library.
- //
- // The go-ethereum library is free software: you can redistribute it and/or modify
- // it under the terms of the GNU Lesser General Public License as published by
- // the Free Software Foundation, either version 3 of the License, or
- // (at your option) any later version.
- //
- // The go-ethereum library is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- // GNU Lesser General Public License for more details.
- //
- // You should have received a copy of the GNU Lesser General Public License
- // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
- package bind
- import (
- "crypto/ecdsa"
- "errors"
- "io"
- "io/ioutil"
- "math/big"
- "reflect"
- "github.com/ethereum/go-ethereum/accounts"
- "github.com/ethereum/go-ethereum/accounts/external"
- "github.com/ethereum/go-ethereum/accounts/keystore"
- "github.com/ethereum/go-ethereum/common"
- "github.com/ethereum/go-ethereum/core/types"
- "github.com/ethereum/go-ethereum/crypto"
- "github.com/ethereum/go-ethereum/log"
- )
- // ErrNoChainID is returned whenever the user failed to specify a chain id.
- var ErrNoChainID = errors.New("no chain id specified")
- // ErrNotAuthorized is returned when an account is not properly unlocked.
- var ErrNotAuthorized = errors.New("not authorized to sign this account")
- // NewTransactor is a utility method to easily create a transaction signer from
- // an encrypted json key stream and the associated passphrase.
- //
- // Deprecated: Use NewTransactorWithChainID instead.
- func NewTransactor(keyin io.Reader, passphrase string) (*TransactOpts, error) {
- log.Warn("WARNING: NewTransactor has been deprecated in favour of NewTransactorWithChainID")
- json, err := ioutil.ReadAll(keyin)
- if err != nil {
- return nil, err
- }
- key, err := keystore.DecryptKey(json, passphrase)
- if err != nil {
- return nil, err
- }
- return NewKeyedTransactor(key.PrivateKey), nil
- }
- // NewKeyStoreTransactor is a utility method to easily create a transaction signer from
- // an decrypted key from a keystore.
- //
- // Deprecated: Use NewKeyStoreTransactorWithChainID instead.
- func NewKeyStoreTransactor(keystore *keystore.KeyStore, account accounts.Account) (*TransactOpts, error) {
- log.Warn("WARNING: NewKeyStoreTransactor has been deprecated in favour of NewTransactorWithChainID")
- var homesteadSigner types.Signer = types.HomesteadSigner{}
- return &TransactOpts{
- From: account.Address,
- Signer: func(address common.Address, tx *types.Transaction) (*types.Transaction, error) {
- if address != account.Address {
- return nil, ErrNotAuthorized
- }
- // Quorum
- signer := homesteadSigner
- if tx.IsPrivate() {
- signer = types.QuorumPrivateTxSigner{}
- }
- // / Quorum
- signature, err := keystore.SignHash(account, signer.Hash(tx).Bytes())
- if err != nil {
- return nil, err
- }
- return tx.WithSignature(signer, signature)
- },
- }, nil
- }
- // NewKeyedTransactor is a utility method to easily create a transaction signer
- // from a single private key.
- //
- // Deprecated: Use NewKeyedTransactorWithChainID instead.
- func NewKeyedTransactor(key *ecdsa.PrivateKey) *TransactOpts {
- log.Warn("WARNING: NewKeyedTransactor has been deprecated in favour of NewKeyedTransactorWithChainID")
- keyAddr := crypto.PubkeyToAddress(key.PublicKey)
- var homesteadSigner types.Signer = types.HomesteadSigner{}
- return &TransactOpts{
- From: keyAddr,
- Signer: func(address common.Address, tx *types.Transaction) (*types.Transaction, error) {
- if address != keyAddr {
- return nil, ErrNotAuthorized
- }
- // Quorum
- signer := homesteadSigner
- if tx.IsPrivate() {
- signer = types.QuorumPrivateTxSigner{}
- }
- // / Quorum
- signature, err := crypto.Sign(signer.Hash(tx).Bytes(), key)
- if err != nil {
- return nil, err
- }
- return tx.WithSignature(signer, signature)
- },
- }
- }
- // NewTransactorWithChainID is a utility method to easily create a transaction signer from
- // an encrypted json key stream and the associated passphrase.
- func NewTransactorWithChainID(keyin io.Reader, passphrase string, chainID *big.Int) (*TransactOpts, error) {
- json, err := ioutil.ReadAll(keyin)
- if err != nil {
- return nil, err
- }
- key, err := keystore.DecryptKey(json, passphrase)
- if err != nil {
- return nil, err
- }
- return NewKeyedTransactorWithChainID(key.PrivateKey, chainID)
- }
- // NewKeyStoreTransactorWithChainID is a utility method to easily create a transaction signer from
- // an decrypted key from a keystore.
- func NewKeyStoreTransactorWithChainID(keystore *keystore.KeyStore, account accounts.Account, chainID *big.Int) (*TransactOpts, error) {
- if chainID == nil {
- return nil, ErrNoChainID
- }
- latestSigner := types.LatestSignerForChainID(chainID)
- log.Info("NewKeyStoreTransactorWithChainID", "latestSigner", reflect.TypeOf(latestSigner))
- return &TransactOpts{
- From: account.Address,
- Signer: func(address common.Address, tx *types.Transaction) (*types.Transaction, error) {
- if address != account.Address {
- return nil, ErrNotAuthorized
- }
- // Quorum
- signer := latestSigner
- if tx.IsPrivate() {
- signer = types.QuorumPrivateTxSigner{}
- }
- // / Quorum
- signature, err := keystore.SignHash(account, signer.Hash(tx).Bytes())
- if err != nil {
- return nil, err
- }
- return tx.WithSignature(signer, signature)
- },
- }, nil
- }
- // NewKeyedTransactorWithChainID is a utility method to easily create a transaction signer
- // from a single private key.
- func NewKeyedTransactorWithChainID(key *ecdsa.PrivateKey, chainID *big.Int) (*TransactOpts, error) {
- keyAddr := crypto.PubkeyToAddress(key.PublicKey)
- if chainID == nil {
- return nil, ErrNoChainID
- }
- latestSigner := types.LatestSignerForChainID(chainID)
- return &TransactOpts{
- From: keyAddr,
- Signer: func(address common.Address, tx *types.Transaction) (*types.Transaction, error) {
- if address != keyAddr {
- return nil, ErrNotAuthorized
- }
- // Quorum
- signer := latestSigner
- if tx.IsPrivate() {
- signer = types.QuorumPrivateTxSigner{}
- }
- // / Quorum
- signature, err := crypto.Sign(signer.Hash(tx).Bytes(), key)
- if err != nil {
- return nil, err
- }
- return tx.WithSignature(signer, signature)
- },
- }, nil
- }
- // NewClefTransactor is a utility method to easily create a transaction signer
- // with a clef backend.
- func NewClefTransactor(clef *external.ExternalSigner, account accounts.Account) *TransactOpts {
- return &TransactOpts{
- From: account.Address,
- Signer: func(address common.Address, transaction *types.Transaction) (*types.Transaction, error) {
- if address != account.Address {
- return nil, ErrNotAuthorized
- }
- log.Info("Signing with NewClefTransactor")
- return clef.SignTx(account, transaction, transaction.ChainId()) // Clef enforces its own chain id
- },
- }
- }
- // Quorum
- //
- // NewWalletTransactor is a utility method to easily create a transaction signer
- // from a wallet account
- func NewWalletTransactor(w accounts.Wallet, account accounts.Account, chainId *big.Int) *TransactOpts {
- return &TransactOpts{
- From: account.Address,
- Signer: func(address common.Address, transaction *types.Transaction) (*types.Transaction, error) {
- if address != account.Address {
- return nil, ErrNotAuthorized
- }
- if transaction.ChainId() == nil {
- chainId = transaction.ChainId()
- }
- return w.SignTx(account, transaction, chainId)
- },
- }
- }
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