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monerod can now sync from pruned blocks

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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
This commit is contained in:
moneromooo-monero
2019-09-16 12:18:34 +00:00
parent d0d76f771a
commit 8330e772f1
30 changed files with 731 additions and 195 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
src/cryptonote_core/tx_pool.cpp
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@@ -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;