github.com/DxChainNetwork/dxc@v0.8.1-0.20220824085222-1162e304b6e7/consensus/misc/forks.go (about)

     1  // Copyright 2017 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package misc
    18  
    19  import (
    20  	"fmt"
    21  
    22  	"github.com/DxChainNetwork/dxc/common"
    23  	"github.com/DxChainNetwork/dxc/core/types"
    24  	"github.com/DxChainNetwork/dxc/params"
    25  )
    26  
    27  // VerifyForkHashes verifies that blocks conforming to network hard-forks do have
    28  // the correct hashes, to avoid clients going off on different chains. This is an
    29  // optional feature.
    30  func VerifyForkHashes(config *params.ChainConfig, header *types.Header, uncle bool) error {
    31  	// We don't care about uncles
    32  	if uncle {
    33  		return nil
    34  	}
    35  	// If the homestead reprice hash is set, validate it
    36  	if config.EIP150Block != nil && config.EIP150Block.Cmp(header.Number) == 0 {
    37  		if config.EIP150Hash != (common.Hash{}) && config.EIP150Hash != header.Hash() {
    38  			return fmt.Errorf("homestead gas reprice fork: have 0x%x, want 0x%x", header.Hash(), config.EIP150Hash)
    39  		}
    40  	}
    41  	// All ok, return
    42  	return nil
    43  }