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Fix simulation immutable #232

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23 changes: 19 additions & 4 deletions estimator.go
Original file line number Diff line number Diff line change
Expand Up @@ -603,19 +603,34 @@ func V2Simulate(provider *ethrpc.Provider, wallet common.Address, transactions T
Data: hexutil.Encode(callData),
}

addrToOverride := wallet

var storageValue string
rpcCall := ethrpc.NewCallBuilder[string]("eth_getStorageAt", nil, wallet.Hex(), common.BytesToHash(common.LeftPadBytes(wallet.Bytes(), 32)).Hex(), block)
_, err = provider.Do(context.Background(), rpcCall.Into(&storageValue))
if err != nil {
return nil, err
}

impAddr := common.BytesToAddress(common.FromHex(storageValue)[12:])

if impAddr != (common.Address{}) {
addrToOverride = impAddr
}

allOverrides := map[common.Address]*CallOverride{
wallet: {Code: walletGasEstimatorCodeV2},
addrToOverride: {Code: walletGasEstimatorCodeV2},
}
for address, override := range overrides {
if address == wallet {
return nil, fmt.Errorf("cannot override wallet address %v", wallet.Hex())
if address == addrToOverride || address == wallet {
return nil, fmt.Errorf("cannot override wallet or implementation address %v", addrToOverride.Hex())
}

allOverrides[address] = override
}

var response string
rpcCall := ethrpc.NewCallBuilder[string]("eth_call", nil, params, block, allOverrides)
rpcCall = ethrpc.NewCallBuilder[string]("eth_call", nil, params, block, allOverrides)
_, err = provider.Do(context.Background(), rpcCall.Into(&response))
if err != nil {
return nil, err
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