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consensus/clique: fix typo and don't add snapshot into recents again

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This commit is contained in:
mark.lin 2017-06-20 10:12:48 +08:00
parent 431cf2a1e4
commit 5c53a5be66
1 changed files with 7 additions and 8 deletions
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15
consensus/clique/clique.go
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@ -99,10 +99,10 @@ var (
// their extra-data fields.
errExtraSigners = errors.New("non-checkpoint block contains extra signer list")
// drrInvalidCheckpointSigners is returned if a checkpoint block contains an
// errInvalidCheckpointSigners is returned if a checkpoint block contains an
// invalid list of signers (i.e. non divisible by 20 bytes, or not the correct
// ones).
drrInvalidCheckpointSigners = errors.New("invalid signer list on checkpoint block")
errInvalidCheckpointSigners = errors.New("invalid signer list on checkpoint block")
// errInvalidMixDigest is returned if a block's mix digest is non-zero.
errInvalidMixDigest = errors.New("non-zero mix digest")
@ -297,7 +297,7 @@ func (c *Clique) verifyHeader(chain consensus.ChainReader, header *types.Header,
return errExtraSigners
}
if checkpoint && signersBytes%common.AddressLength != 0 {
return drrInvalidCheckpointSigners
return errInvalidCheckpointSigners
}
// Ensure that the mix digest is zero as we don't have fork protection currently
if header.MixDigest != (common.Hash{}) {
@ -353,7 +353,7 @@ func (c *Clique) verifyCascadingFields(chain consensus.ChainReader, header *type
}
extraSuffix := len(header.Extra) - extraSeal
if !bytes.Equal(header.Extra[extraVanity:extraSuffix], signers) {
return drrInvalidCheckpointSigners
return errInvalidCheckpointSigners
}
}
// All basic checks passed, verify the seal and return
@ -467,7 +467,6 @@ func (c *Clique) verifySeal(chain consensus.ChainReader, header *types.Header, p
if err != nil {
return err
}
c.recents.Add(snap.Hash, snap)
// Resolve the authorization key and check against signers
signer, err := ecrecover(header, c.signatures)
@ -479,13 +478,13 @@ func (c *Clique) verifySeal(chain consensus.ChainReader, header *types.Header, p
}
for seen, recent := range snap.Recents {
if recent == signer {
// Signer is among recents, only fail if the current block doens't shift it out
// Signer is among recents, only fail if the current block doesn't shift it out
if limit := uint64(len(snap.Signers)/2 + 1); seen > number-limit {
return errUnauthorized
}
}
}
// Ensure that the difficulty corresponts to the turn-ness of the signer
// Ensure that the difficulty corresponds to the turn-ness of the signer
inturn := snap.inturn(header.Number.Uint64(), signer)
if inturn && header.Difficulty.Cmp(diffInTurn) != 0 {
return errInvalidDifficulty
@ -604,7 +603,7 @@ func (c *Clique) Seal(chain consensus.ChainReader, block *types.Block, stop <-ch
// If we're amongst the recent signers, wait for the next block
for seen, recent := range snap.Recents {
if recent == signer {
// Signer is among recents, only wait if the current block doens't shift it out
// Signer is among recents, only wait if the current block doesn't shift it out
if limit := uint64(len(snap.Signers)/2 + 1); number < limit || seen > number-limit {
log.Info("Signed recently, must wait for others")
<-stop