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params.go
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params.go
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// Copyright 2021 Evmos Foundation
// This file is part of Evmos' Ethermint library.
//
// The Ethermint 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 Ethermint 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 Ethermint library. If not, see https://github.com/evmos/ethermint/blob/main/LICENSE
package types
import (
"fmt"
"math/big"
"github.com/ethereum/go-ethereum/params"
sdk "github.com/cosmos/cosmos-sdk/types"
paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/evmos/ethermint/types"
)
var (
// DefaultEVMDenom defines the default EVM denomination on Ethermint
DefaultEVMDenom = types.AttoPhoton
// DefaultAllowUnprotectedTxs rejects all unprotected txs (i.e false)
DefaultAllowUnprotectedTxs = false
// DefaultEnableCreate enables contract creation (i.e true)
DefaultEnableCreate = true
// DefaultEnableCall enables contract calls (i.e true)
DefaultEnableCall = true
// DefaultExtraEIPs defines the set of activateable Ethereum Improvement Proposals
DefaultExtraEIPs = ExtraEIPs{AvailableExtraEIPs}
)
// Parameter keys
var (
ParamStoreKeyEVMDenom = []byte("EVMDenom")
ParamStoreKeyEnableCreate = []byte("EnableCreate")
ParamStoreKeyEnableCall = []byte("EnableCall")
ParamStoreKeyExtraEIPs = []byte("EnableExtraEIPs")
ParamStoreKeyChainConfig = []byte("ChainConfig")
ParamStoreKeyAllowUnprotectedTxs = []byte("AllowUnprotectedTxs")
// AvailableExtraEIPs define the list of all EIPs that can be enabled by the
// EVM interpreter. These EIPs are applied in order and can override the
// instruction sets from the latest hard fork enabled by the ChainConfig. For
// more info check:
// https://github.com/ethereum/go-ethereum/blob/master/core/vm/interpreter.go#L97
AvailableExtraEIPs = []int64{1344, 1884, 2200, 2929, 3198, 3529}
)
// ParamKeyTable returns the parameter key table.
func ParamKeyTable() paramtypes.KeyTable {
return paramtypes.NewKeyTable().RegisterParamSet(&Params{})
}
// NewParams creates a new Params instance
func NewParams(evmDenom string, allowUnprotectedTxs, enableCreate, enableCall bool, config ChainConfig, extraEIPs ExtraEIPs) Params {
return Params{
EvmDenom: evmDenom,
AllowUnprotectedTxs: allowUnprotectedTxs,
EnableCreate: enableCreate,
EnableCall: enableCall,
ExtraEIPs: extraEIPs,
ChainConfig: config,
}
}
// DefaultParams returns default evm parameters
// ExtraEIPs is empty to prevent overriding the latest hard fork instruction set
func DefaultParams() Params {
return Params{
EvmDenom: DefaultEVMDenom,
EnableCreate: DefaultEnableCreate,
EnableCall: DefaultEnableCall,
ChainConfig: DefaultChainConfig(),
ExtraEIPs: DefaultExtraEIPs,
AllowUnprotectedTxs: DefaultAllowUnprotectedTxs,
}
}
// ParamSetPairs returns the parameter set pairs.
func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
return paramtypes.ParamSetPairs{
paramtypes.NewParamSetPair(ParamStoreKeyEVMDenom, &p.EvmDenom, validateEVMDenom),
paramtypes.NewParamSetPair(ParamStoreKeyEnableCreate, &p.EnableCreate, validateBool),
paramtypes.NewParamSetPair(ParamStoreKeyEnableCall, &p.EnableCall, validateBool),
paramtypes.NewParamSetPair(ParamStoreKeyExtraEIPs, &p.ExtraEIPs.EIPs, validateEIPs),
paramtypes.NewParamSetPair(ParamStoreKeyChainConfig, &p.ChainConfig, validateChainConfig),
paramtypes.NewParamSetPair(ParamStoreKeyAllowUnprotectedTxs, &p.AllowUnprotectedTxs, validateBool),
}
}
// Validate performs basic validation on evm parameters.
func (p Params) Validate() error {
if err := validateEVMDenom(p.EvmDenom); err != nil {
return err
}
if err := validateEIPs(p.ExtraEIPs.EIPs); err != nil {
return err
}
if err := validateBool(p.EnableCall); err != nil {
return err
}
if err := validateBool(p.EnableCreate); err != nil {
return err
}
if err := validateBool(p.AllowUnprotectedTxs); err != nil {
return err
}
return validateChainConfig(p.ChainConfig)
}
// EIPs returns the ExtraEIPS as a int slice
func (p Params) EIPs() []int {
eips := make([]int, len(p.ExtraEIPs.EIPs))
for i, eip := range p.ExtraEIPs.EIPs {
eips[i] = int(eip)
}
return eips
}
func validateEVMDenom(i interface{}) error {
denom, ok := i.(string)
if !ok {
return fmt.Errorf("invalid parameter EVM denom type: %T", i)
}
return sdk.ValidateDenom(denom)
}
func validateBool(i interface{}) error {
_, ok := i.(bool)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
return nil
}
func validateEIPs(i interface{}) error {
eips, ok := i.([]int64)
if !ok {
return fmt.Errorf("invalid EIP slice type: %T", i)
}
for _, eip := range eips {
if !vm.ValidEip(int(eip)) {
return fmt.Errorf("EIP %d is not activateable, valid EIPS are: %s", eip, vm.ActivateableEips())
}
}
return nil
}
func validateChainConfig(i interface{}) error {
cfg, ok := i.(ChainConfig)
if !ok {
return fmt.Errorf("invalid chain config type: %T", i)
}
return cfg.Validate()
}
// IsLondon returns if london hardfork is enabled.
func IsLondon(ethConfig *params.ChainConfig, height int64) bool {
return ethConfig.IsLondon(big.NewInt(height))
}