63 lines
2.1 KiB
Go
63 lines
2.1 KiB
Go
// Copyright 2017 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 ethclient
|
|
|
|
import (
|
|
"errors"
|
|
"math/big"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
)
|
|
|
|
// senderFromServer is a types.Signer that remembers the sender address returned by the RPC
|
|
// server. It is stored in the transaction's sender address cache to avoid an additional
|
|
// request in TransactionSender.
|
|
type senderFromServer struct {
|
|
addr common.Address
|
|
blockhash common.Hash
|
|
}
|
|
|
|
var errNotCached = errors.New("sender not cached")
|
|
|
|
func setSenderFromServer(tx *types.Transaction, addr common.Address, block common.Hash) {
|
|
// Use types.Sender for side-effect to store our signer into the cache.
|
|
types.Sender(&senderFromServer{addr, block}, tx)
|
|
}
|
|
|
|
func (s *senderFromServer) Equal(other types.Signer) bool {
|
|
os, ok := other.(*senderFromServer)
|
|
return ok && os.blockhash == s.blockhash
|
|
}
|
|
|
|
func (s *senderFromServer) Sender(tx *types.Transaction) (common.Address, error) {
|
|
if s.blockhash == (common.Hash{}) {
|
|
return common.Address{}, errNotCached
|
|
}
|
|
return s.addr, nil
|
|
}
|
|
|
|
func (s *senderFromServer) ChainID() *big.Int {
|
|
panic("can't sign with senderFromServer")
|
|
}
|
|
func (s *senderFromServer) Hash(tx *types.Transaction) common.Hash {
|
|
panic("can't sign with senderFromServer")
|
|
}
|
|
func (s *senderFromServer) SignatureValues(tx *types.Transaction, sig []byte) (R, S, V *big.Int, err error) {
|
|
panic("can't sign with senderFromServer")
|
|
}
|