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-rw-r--r--core/block_processor.go46
-rw-r--r--core/block_processor_test.go4
-rw-r--r--eth/handler.go2
-rw-r--r--miner/worker.go2
4 files changed, 26 insertions, 28 deletions
diff --git a/core/block_processor.go b/core/block_processor.go
index 1238fda7b..b480948a0 100644
--- a/core/block_processor.go
+++ b/core/block_processor.go
@@ -213,7 +213,7 @@ func (sm *BlockProcessor) processWithParent(block, parent *types.Block) (logs st
txs := block.Transactions()
// Block validation
- if err = ValidateHeader(sm.Pow, header, parent, false, false); err != nil {
+ if err = ValidateHeader(sm.Pow, header, parent.Header(), false, false); err != nil {
return
}
@@ -337,7 +337,7 @@ func (sm *BlockProcessor) VerifyUncles(statedb *state.StateDB, block, parent *ty
return UncleError("uncle[%d](%x)'s parent is not ancestor (%x)", i, hash[:4], uncle.ParentHash[0:4])
}
- if err := ValidateHeader(sm.Pow, uncle, ancestors[uncle.ParentHash], true, true); err != nil {
+ if err := ValidateHeader(sm.Pow, uncle, ancestors[uncle.ParentHash].Header(), true, true); err != nil {
return ValidationError(fmt.Sprintf("uncle[%d](%x) header invalid: %v", i, hash[:4], err))
}
}
@@ -367,52 +367,50 @@ func (sm *BlockProcessor) GetLogs(block *types.Block) (logs state.Logs, err erro
}
// See YP section 4.3.4. "Block Header Validity"
-// Validates a block. Returns an error if the block is invalid.
-func ValidateHeader(pow pow.PoW, block *types.Header, parent *types.Block, checkPow, uncle bool) error {
- if big.NewInt(int64(len(block.Extra))).Cmp(params.MaximumExtraDataSize) == 1 {
- return fmt.Errorf("Block extra data too long (%d)", len(block.Extra))
+// Validates a header. Returns an error if the header is invalid.
+func ValidateHeader(pow pow.PoW, header *types.Header, parent *types.Header, checkPow, uncle bool) error {
+ if big.NewInt(int64(len(header.Extra))).Cmp(params.MaximumExtraDataSize) == 1 {
+ return fmt.Errorf("Header extra data too long (%d)", len(header.Extra))
}
if uncle {
- if block.Time.Cmp(common.MaxBig) == 1 {
+ if header.Time.Cmp(common.MaxBig) == 1 {
return BlockTSTooBigErr
}
} else {
- if block.Time.Cmp(big.NewInt(time.Now().Unix())) == 1 {
+ if header.Time.Cmp(big.NewInt(time.Now().Unix())) == 1 {
return BlockFutureErr
}
}
- if block.Time.Cmp(parent.Time()) != 1 {
+ if header.Time.Cmp(parent.Time) != 1 {
return BlockEqualTSErr
}
- expd := CalcDifficulty(block.Time.Uint64(), parent.Time().Uint64(), parent.Number(), parent.Difficulty())
- if expd.Cmp(block.Difficulty) != 0 {
- return fmt.Errorf("Difficulty check failed for block %v, %v", block.Difficulty, expd)
+ expd := CalcDifficulty(header.Time.Uint64(), parent.Time.Uint64(), parent.Number, parent.Difficulty)
+ if expd.Cmp(header.Difficulty) != 0 {
+ return fmt.Errorf("Difficulty check failed for header %v, %v", header.Difficulty, expd)
}
- var a, b *big.Int
- a = parent.GasLimit()
- a = a.Sub(a, block.GasLimit)
+ a := new(big.Int).Set(parent.GasLimit)
+ a = a.Sub(a, header.GasLimit)
a.Abs(a)
- b = parent.GasLimit()
+ b := new(big.Int).Set(parent.GasLimit)
b = b.Div(b, params.GasLimitBoundDivisor)
- if !(a.Cmp(b) < 0) || (block.GasLimit.Cmp(params.MinGasLimit) == -1) {
- return fmt.Errorf("GasLimit check failed for block %v (%v > %v)", block.GasLimit, a, b)
+ if !(a.Cmp(b) < 0) || (header.GasLimit.Cmp(params.MinGasLimit) == -1) {
+ return fmt.Errorf("GasLimit check failed for header %v (%v > %v)", header.GasLimit, a, b)
}
- num := parent.Number()
- num.Sub(block.Number, num)
+ num := new(big.Int).Set(parent.Number)
+ num.Sub(header.Number, num)
if num.Cmp(big.NewInt(1)) != 0 {
return BlockNumberErr
}
if checkPow {
- // Verify the nonce of the block. Return an error if it's not valid
- if !pow.Verify(types.NewBlockWithHeader(block)) {
- return ValidationError("Block's nonce is invalid (= %x)", block.Nonce)
+ // Verify the nonce of the header. Return an error if it's not valid
+ if !pow.Verify(types.NewBlockWithHeader(header)) {
+ return ValidationError("Header's nonce is invalid (= %x)", header.Nonce)
}
}
-
return nil
}
diff --git a/core/block_processor_test.go b/core/block_processor_test.go
index e0b2d3313..538cf4ee5 100644
--- a/core/block_processor_test.go
+++ b/core/block_processor_test.go
@@ -48,13 +48,13 @@ func TestNumber(t *testing.T) {
statedb := state.New(chain.Genesis().Root(), chain.chainDb)
header := makeHeader(chain.Genesis(), statedb)
header.Number = big.NewInt(3)
- err := ValidateHeader(pow, header, chain.Genesis(), false, false)
+ err := ValidateHeader(pow, header, chain.Genesis().Header(), false, false)
if err != BlockNumberErr {
t.Errorf("expected block number error, got %q", err)
}
header = makeHeader(chain.Genesis(), statedb)
- err = ValidateHeader(pow, header, chain.Genesis(), false, false)
+ err = ValidateHeader(pow, header, chain.Genesis().Header(), false, false)
if err == BlockNumberErr {
t.Errorf("didn't expect block number error")
}
diff --git a/eth/handler.go b/eth/handler.go
index 4aef69043..77fe09e8f 100644
--- a/eth/handler.go
+++ b/eth/handler.go
@@ -118,7 +118,7 @@ func NewProtocolManager(networkId int, mux *event.TypeMux, txpool txPool, pow po
manager.downloader = downloader.New(manager.eventMux, manager.chainman.HasBlock, manager.chainman.GetBlock, manager.chainman.CurrentBlock, manager.chainman.GetTd, manager.chainman.InsertChain, manager.removePeer)
validator := func(block *types.Block, parent *types.Block) error {
- return core.ValidateHeader(pow, block.Header(), parent, true, false)
+ return core.ValidateHeader(pow, block.Header(), parent.Header(), true, false)
}
heighter := func() uint64 {
return manager.chainman.CurrentBlock().NumberU64()
diff --git a/miner/worker.go b/miner/worker.go
index 2f43b110f..7ad7475ea 100644
--- a/miner/worker.go
+++ b/miner/worker.go
@@ -278,7 +278,7 @@ func (self *worker) wait() {
glog.V(logger.Error).Infoln("Invalid block found during mining")
continue
}
- if err := core.ValidateHeader(self.eth.BlockProcessor().Pow, block.Header(), parent, true, false); err != nil && err != core.BlockFutureErr {
+ if err := core.ValidateHeader(self.eth.BlockProcessor().Pow, block.Header(), parent.Header(), true, false); err != nil && err != core.BlockFutureErr {
glog.V(logger.Error).Infoln("Invalid header on mined block:", err)
continue
}