forked from cerc-io/plugeth
eth/downloader: ignore zero size header batch for importing (#24569)
* eth/downloader: ignore zero size header batch for importing * core, light: reject empty header batch for importing
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7ae6c4a790
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e0e8bf31c5
@ -2309,6 +2309,9 @@ Error: %v
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// of the header retrieval mechanisms already need to verify nonces, as well as
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// because nonces can be verified sparsely, not needing to check each.
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func (bc *BlockChain) InsertHeaderChain(chain []*types.Header, checkFreq int) (int, error) {
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if len(chain) == 0 {
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return 0, nil
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}
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start := time.Now()
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if i, err := bc.hc.ValidateHeaderChain(chain, checkFreq); err != nil {
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return i, err
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@ -1377,6 +1377,7 @@ func (d *Downloader) processHeaders(origin uint64, td, ttd *big.Int, beaconMode
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}
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}
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}
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if len(chunkHeaders) > 0 {
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if n, err := d.lightchain.InsertHeaderChain(chunkHeaders, frequency); err != nil {
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rollbackErr = err
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@ -1387,7 +1388,7 @@ func (d *Downloader) processHeaders(origin uint64, td, ttd *big.Int, beaconMode
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log.Warn("Invalid header encountered", "number", chunkHeaders[n].Number, "hash", chunkHashes[n], "parent", chunkHeaders[n].ParentHash, "err", err)
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return fmt.Errorf("%w: %v", errInvalidChain, err)
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}
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// All verifications passed, track all headers within the alloted limits
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// All verifications passed, track all headers within the allowed limits
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if mode == SnapSync {
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head := chunkHeaders[len(chunkHeaders)-1].Number.Uint64()
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if head-rollback > uint64(fsHeaderSafetyNet) {
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@ -1396,6 +1397,7 @@ func (d *Downloader) processHeaders(origin uint64, td, ttd *big.Int, beaconMode
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rollback = 1
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}
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}
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}
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if len(rejected) != 0 {
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// Merge threshold reached, stop importing, but don't roll back
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rollback = 0
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@ -419,6 +419,9 @@ func (lc *LightChain) SetChainHead(header *types.Header) error {
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// In the case of a light chain, InsertHeaderChain also creates and posts light
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// chain events when necessary.
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func (lc *LightChain) InsertHeaderChain(chain []*types.Header, checkFreq int) (int, error) {
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if len(chain) == 0 {
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return 0, nil
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}
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if atomic.LoadInt32(&lc.disableCheckFreq) == 1 {
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checkFreq = 0
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}
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