From 8330e772f1ed680a54833d25c4d17d09a99ab8d6 Mon Sep 17 00:00:00 2001 From: moneromooo-monero Date: Mon, 16 Sep 2019 12:18:34 +0000 Subject: monerod can now sync from pruned blocks If the peer (whether pruned or not itself) supports sending pruned blocks to syncing nodes, the pruned version will be sent along with the hash of the pruned data and the block weight. The original tx hashes can be reconstructed from the pruned txes and theur prunable data hash. Those hashes and the block weights are hashes and checked against the set of precompiled hashes, ensuring the data we received is the original data. It is currently not possible to use this system when not using the set of precompiled hashes, since block weights can not otherwise be checked for validity. This is off by default for now, and is enabled by --sync-pruned-blocks --- src/cryptonote_core/tx_pool.cpp | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) (limited to 'src/cryptonote_core/tx_pool.cpp') diff --git a/src/cryptonote_core/tx_pool.cpp b/src/cryptonote_core/tx_pool.cpp index 49d5a8ccc..1455c3ca3 100644 --- a/src/cryptonote_core/tx_pool.cpp +++ b/src/cryptonote_core/tx_pool.cpp @@ -247,6 +247,7 @@ namespace cryptonote meta.relayed = relayed; meta.do_not_relay = do_not_relay; meta.double_spend_seen = have_tx_keyimges_as_spent(tx); + meta.pruned = tx.pruned; meta.bf_padding = 0; memset(meta.padding, 0, sizeof(meta.padding)); try @@ -290,6 +291,7 @@ namespace cryptonote meta.relayed = relayed; meta.do_not_relay = do_not_relay; meta.double_spend_seen = false; + meta.pruned = tx.pruned; meta.bf_padding = 0; memset(meta.padding, 0, sizeof(meta.padding)); @@ -460,7 +462,7 @@ namespace cryptonote return true; } //--------------------------------------------------------------------------------- - bool tx_memory_pool::take_tx(const crypto::hash &id, transaction &tx, cryptonote::blobdata &txblob, size_t& tx_weight, uint64_t& fee, bool &relayed, bool &do_not_relay, bool &double_spend_seen) + bool tx_memory_pool::take_tx(const crypto::hash &id, transaction &tx, cryptonote::blobdata &txblob, size_t& tx_weight, uint64_t& fee, bool &relayed, bool &do_not_relay, bool &double_spend_seen, bool &pruned) { CRITICAL_REGION_LOCAL(m_transactions_lock); CRITICAL_REGION_LOCAL1(m_blockchain); @@ -482,7 +484,7 @@ namespace cryptonote { tx = ci->second; } - else if (!parse_and_validate_tx_from_blob(txblob, tx)) + else if (!(meta.pruned ? parse_and_validate_tx_base_from_blob(txblob, tx) : parse_and_validate_tx_from_blob(txblob, tx))) { MERROR("Failed to parse tx from txpool"); return false; @@ -496,6 +498,7 @@ namespace cryptonote relayed = meta.relayed; do_not_relay = meta.do_not_relay; double_spend_seen = meta.double_spend_seen; + pruned = meta.pruned; // remove first, in case this throws, so key images aren't removed m_blockchain.remove_txpool_tx(id); @@ -601,7 +604,7 @@ namespace cryptonote txs.reserve(m_blockchain.get_txpool_tx_count()); m_blockchain.for_all_txpool_txes([this, now, &txs](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *){ // 0 fee transactions are never relayed - if(meta.fee > 0 && !meta.do_not_relay && now - meta.last_relayed_time > get_relay_delay(now, meta.receive_time)) + if(!meta.pruned && meta.fee > 0 && !meta.do_not_relay && now - meta.last_relayed_time > get_relay_delay(now, meta.receive_time)) { // if the tx is older than half the max lifetime, we don't re-relay it, to avoid a problem // mentioned by smooth where nodes would flush txes at slightly different times, causing @@ -667,7 +670,7 @@ namespace cryptonote txs.reserve(m_blockchain.get_txpool_tx_count(include_unrelayed_txes)); m_blockchain.for_all_txpool_txes([&txs](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *bd){ transaction tx; - if (!parse_and_validate_tx_from_blob(*bd, tx)) + if (!(meta.pruned ? parse_and_validate_tx_base_from_blob(*bd, tx) : parse_and_validate_tx_from_blob(*bd, tx))) { MERROR("Failed to parse tx from txpool"); // continue @@ -791,7 +794,7 @@ namespace cryptonote txi.id_hash = epee::string_tools::pod_to_hex(txid); txi.tx_blob = *bd; transaction tx; - if (!parse_and_validate_tx_from_blob(*bd, tx)) + if (!(meta.pruned ? parse_and_validate_tx_base_from_blob(*bd, tx) : parse_and_validate_tx_from_blob(*bd, tx))) { MERROR("Failed to parse tx from txpool"); // continue @@ -863,7 +866,7 @@ namespace cryptonote m_blockchain.for_all_txpool_txes([&tx_infos, key_image_infos](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *bd){ cryptonote::rpc::tx_in_pool txi; txi.tx_hash = txid; - if (!parse_and_validate_tx_from_blob(*bd, txi.tx)) + if (!(meta.pruned ? parse_and_validate_tx_base_from_blob(*bd, txi.tx) : parse_and_validate_tx_from_blob(*bd, txi.tx))) { MERROR("Failed to parse tx from txpool"); // continue @@ -1143,7 +1146,7 @@ namespace cryptonote ss << "id: " << txid << std::endl; if (!short_format) { cryptonote::transaction tx; - if (!parse_and_validate_tx_from_blob(*txblob, tx)) + if (!(meta.pruned ? parse_and_validate_tx_base_from_blob(*txblob, tx) : parse_and_validate_tx_from_blob(*txblob, tx))) { MERROR("Failed to parse tx from txpool"); return true; // continue @@ -1199,6 +1202,12 @@ namespace cryptonote } LOG_PRINT_L2("Considering " << sorted_it->second << ", weight " << meta.weight << ", current block weight " << total_weight << "/" << max_total_weight << ", current coinbase " << print_money(best_coinbase)); + if (meta.pruned) + { + LOG_PRINT_L2(" tx is pruned"); + continue; + } + // Can not exceed maximum block weight if (max_total_weight < total_weight + meta.weight) { @@ -1322,7 +1331,7 @@ namespace cryptonote { cryptonote::blobdata txblob = m_blockchain.get_txpool_tx_blob(txid); cryptonote::transaction tx; - if (!parse_and_validate_tx_from_blob(txblob, tx)) + if (!parse_and_validate_tx_from_blob(txblob, tx)) // remove pruned ones on startup, they're meant to be temporary { MERROR("Failed to parse tx from txpool"); continue; -- cgit v1.2.3