// 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 misc import ( "fmt" "github.com/ava-labs/coreth/core/types" "github.com/ava-labs/coreth/params" "github.com/ethereum/go-ethereum/common" ) // VerifyForkHashes verifies that blocks conforming to network hard-forks do have // the correct hashes, to avoid clients going off on different chains. This is an // optional feature. func VerifyForkHashes(config *params.ChainConfig, header *types.Header, uncle bool) error { // We don't care about uncles if uncle { return nil } // If the homestead reprice hash is set, validate it if config.EIP150Block != nil && config.EIP150Block.Cmp(header.Number) == 0 { if config.EIP150Hash != (common.Hash{}) && config.EIP150Hash != header.Hash() { return fmt.Errorf("homestead gas reprice fork: have 0x%x, want 0x%x", header.Hash(), config.EIP150Hash) } } // All ok, return return nil }