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Limit block extra to 1024

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obscuren 2015-01-06 00:17:05 +01:00
parent c9985bf563
commit cc7f8f58e8
1 changed files with 4 additions and 0 deletions
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4
core/block_processor.go
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@ -258,6 +258,10 @@ func (sm *BlockProcessor) CalculateTD(block *types.Block) (*big.Int, bool) {
// an uncle or anything that isn't on the current block chain. // an uncle or anything that isn't on the current block chain.
// Validation validates easy over difficult (dagger takes longer time = difficult) // Validation validates easy over difficult (dagger takes longer time = difficult)
func (sm *BlockProcessor) ValidateBlock(block, parent *types.Block) error { func (sm *BlockProcessor) ValidateBlock(block, parent *types.Block) error {
if len(block.Header().Extra) > 1024 {
return fmt.Errorf("Block extra data too long (%d)", len(block.Header().Extra))
}
expd := CalcDifficulty(block, parent) expd := CalcDifficulty(block, parent)
if expd.Cmp(block.Header().Difficulty) < 0 { if expd.Cmp(block.Header().Difficulty) < 0 {
return fmt.Errorf("Difficulty check failed for block %v, %v", block.Header().Difficulty, expd) return fmt.Errorf("Difficulty check failed for block %v, %v", block.Header().Difficulty, expd)