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cryptonote core/protocol: don't drop peers for soft offenses

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Also: txs with tx_extra which is too large will not get published to ZMQ

Co-authored-by: SChernykh <sergey.v.chernykh@gmail.com>
This commit is contained in:
jeffro256 2023-03-27 16:32:47 -05:00
parent f307621678
commit caa7561705
4 changed files with 10 additions and 3 deletions
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7
src/cryptonote_basic/verification_context.h
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@ -42,7 +42,12 @@ namespace cryptonote
static_assert(unsigned(relay_method::none) == 0, "default m_relay initialization is not to relay_method::none");
relay_method m_relay; // gives indication on how tx should be relayed (if at all)
bool m_verifivation_failed; //bad tx, should drop connection
bool m_verifivation_failed; //bad tx, tx should not enter mempool and connection should be dropped unless m_no_drop_offense
// Do not add to mempool, do not relay, but also do not punish the peer for sending or drop
// connections to them. Used for low fees, tx_extra too big, "relay-only rules". Not to be
// confused with breaking soft fork rules, because tx could be later added to the chain if mined
// because it does not violate consensus rules.
bool m_no_drop_offense;
bool m_verifivation_impossible; //the transaction is related with an alternative blockchain
bool m_added_to_pool;
bool m_low_mixin;

2
src/cryptonote_core/cryptonote_core.cpp
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@ -1099,7 +1099,7 @@ namespace cryptonote
else if(tvc[i].m_verifivation_impossible)
{MERROR_VER("Transaction verification impossible: " << results[i].hash);}
if(tvc[i].m_added_to_pool)
if(tvc[i].m_added_to_pool && results[i].tx.extra.size() <= MAX_TX_EXTRA_SIZE)
{
MDEBUG("tx added: " << results[i].hash);
valid_events = true;

2
src/cryptonote_core/tx_pool.cpp
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@ -212,6 +212,7 @@ namespace cryptonote
{
tvc.m_verifivation_failed = true;
tvc.m_fee_too_low = true;
tvc.m_no_drop_offense = true;
return false;
}
@ -230,6 +231,7 @@ namespace cryptonote
LOG_PRINT_L1("transaction tx-extra is too big: " << tx_extra_size << " bytes, the limit is: " << MAX_TX_EXTRA_SIZE);
tvc.m_verifivation_failed = true;
tvc.m_tx_extra_too_big = true;
tvc.m_no_drop_offense = true;
return false;
}

2
src/cryptonote_protocol/cryptonote_protocol_handler.inl
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@ -1020,7 +1020,7 @@ namespace cryptonote
for (auto& tx : arg.txs)
{
tx_verification_context tvc{};
if (!m_core.handle_incoming_tx({tx, crypto::null_hash}, tvc, tx_relay, true))
if (!m_core.handle_incoming_tx({tx, crypto::null_hash}, tvc, tx_relay, true) && !tvc.m_no_drop_offense)
{
LOG_PRINT_CCONTEXT_L1("Tx verification failed, dropping connection");
drop_connection(context, false, false);