diff options
Diffstat (limited to 'consensus/ethash/consensus.go')
| -rw-r--r-- | consensus/ethash/consensus.go | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/consensus/ethash/consensus.go b/consensus/ethash/consensus.go index 62e3f8fca..fb9a396ae 100644 --- a/consensus/ethash/consensus.go +++ b/consensus/ethash/consensus.go @@ -63,7 +63,6 @@ var ( // codebase, inherently breaking if the engine is swapped out. Please put common // error types into the consensus package. var ( - errLargeBlockTime = errors.New("timestamp too big") errZeroBlockTime = errors.New("timestamp equals parent's") errTooManyUncles = errors.New("too many uncles") errDuplicateUncle = errors.New("duplicate uncle") @@ -242,20 +241,16 @@ func (ethash *Ethash) verifyHeader(chain consensus.ChainReader, header, parent * return fmt.Errorf("extra-data too long: %d > %d", len(header.Extra), params.MaximumExtraDataSize) } // Verify the header's timestamp - if uncle { - if header.Time.Cmp(math.MaxBig256) > 0 { - return errLargeBlockTime - } - } else { - if header.Time.Cmp(big.NewInt(time.Now().Add(allowedFutureBlockTime).Unix())) > 0 { + if !uncle { + if header.Time > uint64(time.Now().Add(allowedFutureBlockTime).Unix()) { return consensus.ErrFutureBlock } } - if header.Time.Cmp(parent.Time) <= 0 { + if header.Time <= parent.Time { return errZeroBlockTime } // Verify the block's difficulty based in it's timestamp and parent's difficulty - expected := ethash.CalcDifficulty(chain, header.Time.Uint64(), parent) + expected := ethash.CalcDifficulty(chain, header.Time, parent) if expected.Cmp(header.Difficulty) != 0 { return fmt.Errorf("invalid difficulty: have %v, want %v", header.Difficulty, expected) @@ -349,7 +344,7 @@ func makeDifficultyCalculator(bombDelay *big.Int) func(time uint64, parent *type // ) + 2^(periodCount - 2) bigTime := new(big.Int).SetUint64(time) - bigParentTime := new(big.Int).Set(parent.Time) + bigParentTime := new(big.Int).SetUint64(parent.Time) // holds intermediate values to make the algo easier to read & audit x := new(big.Int) @@ -408,7 +403,7 @@ func calcDifficultyHomestead(time uint64, parent *types.Header) *big.Int { // ) + 2^(periodCount - 2) bigTime := new(big.Int).SetUint64(time) - bigParentTime := new(big.Int).Set(parent.Time) + bigParentTime := new(big.Int).SetUint64(parent.Time) // holds intermediate values to make the algo easier to read & audit x := new(big.Int) @@ -456,7 +451,7 @@ func calcDifficultyFrontier(time uint64, parent *types.Header) *big.Int { bigParentTime := new(big.Int) bigTime.SetUint64(time) - bigParentTime.Set(parent.Time) + bigParentTime.SetUint64(parent.Time) if bigTime.Sub(bigTime, bigParentTime).Cmp(params.DurationLimit) < 0 { diff.Add(parent.Difficulty, adjust) @@ -558,7 +553,7 @@ func (ethash *Ethash) Prepare(chain consensus.ChainReader, header *types.Header) if parent == nil { return consensus.ErrUnknownAncestor } - header.Difficulty = ethash.CalcDifficulty(chain, header.Time.Uint64(), parent) + header.Difficulty = ethash.CalcDifficulty(chain, header.Time, parent) return nil } |