github.com/halybang/go-ethereum@v1.0.5-0.20180325041310-3b262bc1367c/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  /*
    20  import "github.com/wanchain/go-wanchain/params"
    21  
    22  
    23  import (
    24  	"fmt"
    25  
    26  	"github.com/wanchain/go-wanchain/common"
    27  	"github.com/wanchain/go-wanchain/core/types"
    28  	"github.com/wanchain/go-wanchain/params"
    29  )
    30  
    31  // VerifyForkHashes verifies that blocks conforming to network hard-forks do have
    32  // the correct hashes, to avoid clients going off on different chains. This is an
    33  // optional feature.
    34  func VerifyForkHashes(config *params.ChainConfig, header *types.Header, uncle bool) error {
    35  	// We don't care about uncles
    36  	if uncle {
    37  		return nil
    38  	}
    39  	// If the homestead reprice hash is set, validate it
    40  	if config.EIP150Block != nil && config.EIP150Block.Cmp(header.Number) == 0 {
    41  		if config.EIP150Hash != (common.Hash{}) && config.EIP150Hash != header.Hash() {
    42  			return fmt.Errorf("homestead gas reprice fork: have 0x%x, want 0x%x", header.Hash(), config.EIP150Hash)
    43  		}
    44  	}
    45  	// All ok, return
    46  	return nil
    47  }
    48  
    49  */