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cmd, eth, internal, les: add txfee cap (#21212)

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* cmd, eth, internal, les: add gasprice cap

* cmd/utils, eth: add default value for gasprice cap

* all: use txfee cap

* cmd, eth: add fix

* cmd, internal: address comments
This commit is contained in:
gary rong
2020-06-17 15:46:31 +08:00
committed by GitHub
parent bcf19bc4be
commit 56a319b9da
9 changed files with 44 additions and 5 deletions
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7
internal/ethapi/api.go
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@ -1520,6 +1520,13 @@ func (args *SendTxArgs) toTransaction() *types.Transaction {
// SubmitTransaction is a helper function that submits tx to txPool and logs a message.
func SubmitTransaction(ctx context.Context, b Backend, tx *types.Transaction) (common.Hash, error) {
// If the transaction fee cap is already specified, ensure the
// fee of the given transaction is _reasonable_.
feeEth := new(big.Float).Quo(new(big.Float).SetInt(new(big.Int).Mul(tx.GasPrice(), new(big.Int).SetUint64(tx.Gas()))), new(big.Float).SetInt(big.NewInt(params.Ether)))
feeFloat, _ := feeEth.Float64()
if b.RPCTxFeeCap() != 0 && feeFloat > b.RPCTxFeeCap() {
return common.Hash{}, fmt.Errorf("tx fee (%.2f ether) exceeds the configured cap (%.2f ether)", feeFloat, b.RPCTxFeeCap())
}
if err := b.SendTx(ctx, tx); err != nil {
return common.Hash{}, err
}

3
internal/ethapi/backend.go
View File

@ -45,7 +45,8 @@ type Backend interface {
ChainDb() ethdb.Database
AccountManager() *accounts.Manager
ExtRPCEnabled() bool
RPCGasCap() *big.Int // global gas cap for eth_call over rpc: DoS protection
RPCGasCap() *big.Int // global gas cap for eth_call over rpc: DoS protection
RPCTxFeeCap() float64 // global tx fee cap for all transaction related APIs
// Blockchain API
SetHead(number uint64)