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Enforce restricted # pool txs served via RPC + optimize chunked reqs

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- `/getblocks.bin` respects the `RESTRICTED_TX_COUNT` (=100) when
returning pool txs via a restricted RPC daemon.
- A restricted RPC daemon includes a max of `RESTRICTED_TX_COUNT` txs
in the `added_pool_txs` field, and returns any remaining pool hashes
in the `remaining_added_pool_txids` field. The client then requests
the remaining txs via `/gettransactions` in chunks.
- `/gettransactions` no longer does expensive no-ops for ALL pool txs
if the client requests a subset of pool txs. Instead it searches for
the txs the client explicitly requests.
- Reset `m_pool_info_query_time` when a user:
  (1) rescans the chain (so the wallet re-requests the whole pool)
  (2) changes the daemon their wallets points to (a new daemon would
      have a different view of the pool)
- `/getblocks.bin` respects the `req.prune` field when returning
pool txs.
- Pool extension fields in response to `/getblocks.bin` are optional
with default 0'd values.
This commit is contained in:
j-berman
2022-12-13 16:08:56 -08:00
committed by rbrunner7
parent 9752116ed3
commit c4af33eded
12 changed files with 243 additions and 168 deletions
Download Patch File Download Diff File Expand all files Collapse all files

78
src/cryptonote_core/tx_pool.cpp
View File

@@ -603,7 +603,7 @@ namespace cryptonote
return true;
}
//---------------------------------------------------------------------------------
bool tx_memory_pool::get_transaction_info(const crypto::hash &txid, tx_details &td) const
bool tx_memory_pool::get_transaction_info(const crypto::hash &txid, tx_details &td, bool include_sensitive_data, bool include_blob) const
{
PERF_TIMER(get_transaction_info);
CRITICAL_REGION_LOCAL(m_transactions_lock);
@@ -615,7 +615,12 @@ namespace cryptonote
txpool_tx_meta_t meta;
if (!m_blockchain.get_txpool_tx_meta(txid, meta))
{
MERROR("Failed to find tx in txpool");
LOG_PRINT_L2("Failed to find tx in txpool: " << txid);
return false;
}
if (!include_sensitive_data && !meta.matches(relay_category::broadcasted))
{
// We don't want sensitive data && the tx is sensitive, so no need to return it
return false;
}
cryptonote::blobdata txblob = m_blockchain.get_txpool_tx_blob(txid, relay_category::all);
@@ -641,12 +646,13 @@ namespace cryptonote
td.kept_by_block = meta.kept_by_block;
td.last_failed_height = meta.last_failed_height;
td.last_failed_id = meta.last_failed_id;
td.receive_time = meta.receive_time;
td.last_relayed_time = meta.dandelionpp_stem ? 0 : meta.last_relayed_time;
td.receive_time = include_sensitive_data ? meta.receive_time : 0;
td.last_relayed_time = (include_sensitive_data && !meta.dandelionpp_stem) ? meta.last_relayed_time : 0;
td.relayed = meta.relayed;
td.do_not_relay = meta.do_not_relay;
td.double_spend_seen = meta.double_spend_seen;
td.sensitive = !meta.matches(relay_category::broadcasted);
if (include_blob)
td.tx_blob = std::move(txblob);
}
catch (const std::exception &e)
{
@@ -656,6 +662,25 @@ namespace cryptonote
return true;
}
//------------------------------------------------------------------
bool tx_memory_pool::get_transactions_info(const std::vector<crypto::hash>& txids, std::vector<std::pair<crypto::hash, tx_details>>& txs, bool include_sensitive) const
{
CRITICAL_REGION_LOCAL(m_transactions_lock);
CRITICAL_REGION_LOCAL1(m_blockchain);
txs.clear();
for (const auto &it: txids)
{
tx_details details;
bool success = get_transaction_info(it, details, include_sensitive, true/*include_blob*/);
if (success)
{
txs.push_back(std::make_pair(it, std::move(details)));
}
}
return true;
}
//---------------------------------------------------------------------------------
bool tx_memory_pool::get_complement(const std::vector<crypto::hash> &hashes, std::vector<cryptonote::blobdata> &txes) const
{
@@ -929,7 +954,7 @@ namespace cryptonote
}, false, category);
}
//------------------------------------------------------------------
bool tx_memory_pool::get_pool_info(time_t start_time, bool include_sensitive, std::vector<tx_details>& added_txs, std::vector<crypto::hash>& removed_txs, bool& incremental) const
bool tx_memory_pool::get_pool_info(time_t start_time, bool include_sensitive, size_t max_tx_count, std::vector<std::pair<crypto::hash, tx_details>>& added_txs, std::vector<crypto::hash>& remaining_added_txids, std::vector<crypto::hash>& removed_txs, bool& incremental) const
{
CRITICAL_REGION_LOCAL(m_transactions_lock);
CRITICAL_REGION_LOCAL1(m_blockchain);
@@ -957,46 +982,39 @@ namespace cryptonote
}
added_txs.clear();
remaining_added_txids.clear();
removed_txs.clear();
std::vector<crypto::hash> txids;
if (!incremental)
{
LOG_PRINT_L2("Giving back the whole pool");
// Give back the whole pool in 'added_txs'; because calling 'get_transaction_info' right inside the
// anonymous method somehow results in an LMDB error with transactions we have to build a list of
// ids first and get the full info afterwards
std::vector<crypto::hash> txids;
const relay_category category = include_sensitive ? relay_category::all : relay_category::broadcasted;
m_blockchain.for_all_txpool_txes([&txids](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata_ref *bd){
txids.push_back(txid);
return true;
}, false, category);
tx_details details;
for (const auto &it: txids)
get_transaction_hashes(txids, include_sensitive);
if (txids.size() > max_tx_count)
{
bool success = get_transaction_info(it, details);
if (success)
{
added_txs.push_back(std::move(details));
}
remaining_added_txids = std::vector<crypto::hash>(txids.begin() + max_tx_count, txids.end());
txids.erase(txids.begin() + max_tx_count, txids.end());
}
get_transactions_info(txids, added_txs, include_sensitive);
return true;
}
// Give back incrementally, based on time of entry into the map
tx_details details;
for (const auto &pit : m_added_txs_by_id)
{
if (pit.second >= start_time)
{
bool success = get_transaction_info(pit.first, details);
if (success)
{
if (include_sensitive || !details.sensitive)
{
added_txs.push_back(std::move(details));
}
}
}
txids.push_back(pit.first);
}
get_transactions_info(txids, added_txs, include_sensitive);
if (added_txs.size() > max_tx_count)
{
remaining_added_txids.reserve(added_txs.size() - max_tx_count);
for (size_t i = max_tx_count; i < added_txs.size(); ++i)
remaining_added_txids.push_back(added_txs[i].first);
added_txs.erase(added_txs.begin() + max_tx_count, added_txs.end());
}
std::multimap<time_t, removed_tx_info>::const_iterator rit = m_removed_txs_by_time.lower_bound(start_time);