From 09777952ee476ff80d4b6e63b5041ff5ca0e441b Mon Sep 17 00:00:00 2001 From: Péter Szilágyi Date: Wed, 5 Apr 2017 01:16:29 +0300 Subject: core, consensus: pluggable consensus engines (#3817) This commit adds pluggable consensus engines to go-ethereum. In short, it introduces a generic consensus interface, and refactors the entire codebase to use this interface. --- consensus/misc/forks.go | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 consensus/misc/forks.go (limited to 'consensus/misc/forks.go') diff --git a/consensus/misc/forks.go b/consensus/misc/forks.go new file mode 100644 index 000000000..4a5e7c37e --- /dev/null +++ b/consensus/misc/forks.go @@ -0,0 +1,43 @@ +// 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 . + +package misc + +import ( + "fmt" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/core/types" + "github.com/ethereum/go-ethereum/params" +) + +// 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 +} -- cgit