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protocol: add scoring system to drop peers that don't behave

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moneromooo 2020-12-01 22:25:07 +00:00 committed by moneromooo-monero
parent 4f401f6fca
commit 61f5001c3f
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GPG key ID: 686F07454D6CEFC3
3 changed files with 52 additions and 11 deletions
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4
src/cryptonote_basic/connection_context.h
View file

@ -43,7 +43,7 @@ namespace cryptonote
{
cryptonote_connection_context(): m_state(state_before_handshake), m_remote_blockchain_height(0), m_last_response_height(0),
m_last_request_time(boost::date_time::not_a_date_time), m_callback_request_count(0),
m_last_known_hash(crypto::null_hash), m_pruning_seed(0), m_rpc_port(0), m_rpc_credits_per_hash(0), m_anchor(false) {}
m_last_known_hash(crypto::null_hash), m_pruning_seed(0), m_rpc_port(0), m_rpc_credits_per_hash(0), m_anchor(false), m_score(0) {}
enum state
{
@ -66,7 +66,7 @@ namespace cryptonote
uint16_t m_rpc_port;
uint32_t m_rpc_credits_per_hash;
bool m_anchor;
//size_t m_score; TODO: add score calculations
int32_t m_score;
};
inline std::string get_protocol_state_string(cryptonote_connection_context::state s)

4
src/cryptonote_protocol/cryptonote_protocol_handler.h
View file

@ -148,6 +148,7 @@ namespace cryptonote
void notify_new_stripe(cryptonote_connection_context &context, uint32_t stripe);
void skip_unneeded_hashes(cryptonote_connection_context& context, bool check_block_queue) const;
bool request_txpool_complement(cryptonote_connection_context &context);
void hit_score(cryptonote_connection_context &context, int32_t score);
t_core& m_core;
@ -163,6 +164,7 @@ namespace cryptonote
epee::math_helper::once_a_time_seconds<30> m_idle_peer_kicker;
epee::math_helper::once_a_time_milliseconds<100> m_standby_checker;
epee::math_helper::once_a_time_seconds<101> m_sync_search_checker;
epee::math_helper::once_a_time_seconds<43> m_bad_peer_checker;
std::atomic<unsigned int> m_max_out_peers;
tools::PerformanceTimer m_sync_timer, m_add_timer;
uint64_t m_last_add_end_time;
@ -183,6 +185,8 @@ namespace cryptonote
double get_avg_block_size();
boost::circular_buffer<size_t> m_avg_buffer = boost::circular_buffer<size_t>(10);
boost::mutex m_bad_peer_check_lock;
template<class t_parameter>
bool post_notify(typename t_parameter::request& arg, cryptonote_connection_context& context)
{

43
src/cryptonote_protocol/cryptonote_protocol_handler.inl
View file

@ -68,10 +68,11 @@
#define BLOCK_QUEUE_FORCE_DOWNLOAD_NEAR_BLOCKS 1000
#define REQUEST_NEXT_SCHEDULED_SPAN_THRESHOLD_STANDBY (5 * 1000000) // microseconds
#define REQUEST_NEXT_SCHEDULED_SPAN_THRESHOLD (30 * 1000000) // microseconds
#define IDLE_PEER_KICK_TIME (600 * 1000000) // microseconds
#define IDLE_PEER_KICK_TIME (240 * 1000000) // microseconds
#define PASSIVE_PEER_KICK_TIME (60 * 1000000) // microseconds
#define DROP_ON_SYNC_WEDGE_THRESHOLD (30 * 1000000000ull) // nanoseconds
#define LAST_ACTIVITY_STALL_THRESHOLD (2.0f) // seconds
#define DROP_PEERS_ON_SCORE -2
namespace cryptonote
{
@ -142,6 +143,7 @@ namespace cryptonote
m_core.get_short_chain_history(r.block_ids);
handler_request_blocks_history( r.block_ids ); // change the limit(?), sleep(?)
r.prune = m_sync_pruned_blocks;
context.m_last_request_time = boost::posix_time::microsec_clock::universal_time();
MLOG_P2P_MESSAGE("-->>NOTIFY_REQUEST_CHAIN: m_block_ids.size()=" << r.block_ids.size() );
post_notify<NOTIFY_REQUEST_CHAIN>(r, context);
MLOG_PEER_STATE("requesting chain");
@ -427,7 +429,7 @@ namespace cryptonote
template<class t_core>
int t_cryptonote_protocol_handler<t_core>::handle_notify_new_block(int command, NOTIFY_NEW_BLOCK::request& arg, cryptonote_connection_context& context)
{
MLOGIF_P2P_MESSAGE(crypto::hash hash; cryptonote::block b; bool ret = cryptonote::parse_and_validate_block_from_blob(arg.b.block, b, &hash);, ret, "Received NOTIFY_NEW_BLOCK " << hash << " (height " << arg.current_blockchain_height << ", " << arg.b.txs.size() << " txes)");
MLOGIF_P2P_MESSAGE(crypto::hash hash; cryptonote::block b; bool ret = cryptonote::parse_and_validate_block_from_blob(arg.b.block, b, &hash);, ret, context << "Received NOTIFY_NEW_BLOCK " << hash << " (height " << arg.current_blockchain_height << ", " << arg.b.txs.size() << " txes)");
if(context.m_state != cryptonote_connection_context::state_normal)
return 1;
if(!is_synchronized()) // can happen if a peer connection goes to normal but another thread still hasn't finished adding queued blocks
@ -487,6 +489,7 @@ namespace cryptonote
m_core.get_short_chain_history(r.block_ids);
r.prune = m_sync_pruned_blocks;
handler_request_blocks_history( r.block_ids ); // change the limit(?), sleep(?)
context.m_last_request_time = boost::posix_time::microsec_clock::universal_time();
MLOG_P2P_MESSAGE("-->>NOTIFY_REQUEST_CHAIN: m_block_ids.size()=" << r.block_ids.size() );
post_notify<NOTIFY_REQUEST_CHAIN>(r, context);
MLOG_PEER_STATE("requesting chain");
@ -498,7 +501,7 @@ namespace cryptonote
template<class t_core>
int t_cryptonote_protocol_handler<t_core>::handle_notify_new_fluffy_block(int command, NOTIFY_NEW_FLUFFY_BLOCK::request& arg, cryptonote_connection_context& context)
{
MLOGIF_P2P_MESSAGE(crypto::hash hash; cryptonote::block b; bool ret = cryptonote::parse_and_validate_block_from_blob(arg.b.block, b, &hash);, ret, "Received NOTIFY_NEW_FLUFFY_BLOCK " << hash << " (height " << arg.current_blockchain_height << ", " << arg.b.txs.size() << " txes)");
MLOGIF_P2P_MESSAGE(crypto::hash hash; cryptonote::block b; bool ret = cryptonote::parse_and_validate_block_from_blob(arg.b.block, b, &hash);, ret, context << "Received NOTIFY_NEW_FLUFFY_BLOCK " << hash << " (height " << arg.current_blockchain_height << ", " << arg.b.txs.size() << " txes)");
if(context.m_state != cryptonote_connection_context::state_normal)
return 1;
if(!is_synchronized()) // can happen if a peer connection goes to normal but another thread still hasn't finished adding queued blocks
@ -765,6 +768,7 @@ namespace cryptonote
m_core.get_short_chain_history(r.block_ids);
handler_request_blocks_history( r.block_ids ); // change the limit(?), sleep(?)
r.prune = m_sync_pruned_blocks;
context.m_last_request_time = boost::posix_time::microsec_clock::universal_time();
MLOG_P2P_MESSAGE("-->>NOTIFY_REQUEST_CHAIN: m_block_ids.size()=" << r.block_ids.size() );
post_notify<NOTIFY_REQUEST_CHAIN>(r, context);
MLOG_PEER_STATE("requesting chain");
@ -1029,6 +1033,7 @@ namespace cryptonote
drop_connection(context, false, false);
return 1;
}
context.m_last_request_time = boost::posix_time::microsec_clock::universal_time();
MLOG_P2P_MESSAGE("-->>NOTIFY_RESPONSE_GET_OBJECTS: blocks.size()="
<< rsp.blocks.size() << ", rsp.m_current_blockchain_height=" << rsp.current_blockchain_height
<< ", missed_ids.size()=" << rsp.missed_ids.size());
@ -1666,6 +1671,7 @@ skip:
bool t_cryptonote_protocol_handler<t_core>::kick_idle_peers()
{
MTRACE("Checking for idle peers...");
std::vector<boost::uuids::uuid> idle_peers;
m_p2p->for_each_connection([&](cryptonote_connection_context& context, nodetool::peerid_type peer_id, uint32_t support_flags)->bool
{
if (context.m_state == cryptonote_connection_context::state_synchronizing && context.m_last_request_time != boost::date_time::not_a_date_time)
@ -1673,6 +1679,8 @@ skip:
const boost::posix_time::ptime now = boost::posix_time::microsec_clock::universal_time();
const boost::posix_time::time_duration dt = now - context.m_last_request_time;
if (dt.total_microseconds() > IDLE_PEER_KICK_TIME)
{
if (context.m_score-- >= 0)
{
MINFO(context << " kicking idle peer, last update " << (dt.total_microseconds() / 1.e6) << " seconds ago");
LOG_PRINT_CCONTEXT_L2("requesting callback");
@ -1681,9 +1689,25 @@ skip:
++context.m_callback_request_count;
m_p2p->request_callback(context);
}
else
{
idle_peers.push_back(context.m_connection_id);
}
}
}
return true;
});
for (const auto &uuid: idle_peers)
{
if (!m_p2p->for_connection(uuid, [&](cryptonote_connection_context& ctx, nodetool::peerid_type peer_id, uint32_t f)->bool{
MINFO(ctx << "dropping idle peer with negative score");
drop_connection(ctx, true, false);
return true;
}))
MDEBUG("Failed to find peer we wanted to drop");
}
return true;
}
//------------------------------------------------------------------------------------------------------------------------
@ -2564,6 +2588,19 @@ skip:
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
void t_cryptonote_protocol_handler<t_core>::hit_score(cryptonote_connection_context &context, int32_t score)
{
if (score <= 0)
{
MERROR("Negative score hit");
return;
}
context.m_score -= score;
if (context.m_score <= DROP_PEERS_ON_SCORE)
drop_connection_with_score(context, 5, false);
}
//------------------------------------------------------------------------------------------------------------------------
template<class t_core>
std::string t_cryptonote_protocol_handler<t_core>::get_peers_overview() const
{
std::stringstream ss;