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cryptonote_protocol_handler: add race condition demo

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remotes/1691602464505633909/tmp_refs/heads/wonerujo-v0.10.1
anon 3 years ago
parent 9ec4ce36c7
commit 699e82c282
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1 changed files with 589 additions and 0 deletions
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tests/unit_tests/node_server.cpp
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@ -311,5 +311,594 @@ TEST(node_server, bind_same_p2p_port)
EXPECT_TRUE(init(new_node(), port_another));
}
TEST(cryptonote_protocol_handler, race_condition)
{
struct contexts {
using basic = epee::net_utils::connection_context_base;
using cryptonote = cryptonote::cryptonote_connection_context;
using p2p = nodetool::p2p_connection_context_t<cryptonote>;
};
using context_t = contexts::p2p;
using handler_t = epee::levin::async_protocol_handler<context_t>;
using connection_t = epee::net_utils::connection<handler_t>;
using connection_ptr = boost::shared_ptr<connection_t>;
using connections_t = std::vector<connection_ptr>;
using shared_state_t = typename connection_t::shared_state;
using shared_state_ptr = std::shared_ptr<shared_state_t>;
using io_context_t = boost::asio::io_service;
using event_t = epee::simple_event;
using ec_t = boost::system::error_code;
auto create_conn_pair = [](connection_ptr in, connection_ptr out) {
using endpoint_t = boost::asio::ip::tcp::endpoint;
using acceptor_t = boost::asio::ip::tcp::acceptor;
io_context_t io_context;
endpoint_t endpoint(boost::asio::ip::address::from_string("127.0.0.1"), 5262);
acceptor_t acceptor(io_context);
ec_t ec;
acceptor.open(endpoint.protocol(), ec);
EXPECT_EQ(ec.value(), 0);
acceptor.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
acceptor.bind(endpoint, ec);
EXPECT_EQ(ec.value(), 0);
acceptor.listen(boost::asio::socket_base::max_listen_connections, ec);
EXPECT_EQ(ec.value(), 0);
out->socket().open(endpoint.protocol(), ec);
EXPECT_EQ(ec.value(), 0);
acceptor.async_accept(in->socket(), [](const ec_t &ec){});
out->socket().async_connect(endpoint, [](const ec_t &ec){});
io_context.run();
acceptor.close(ec);
EXPECT_EQ(ec.value(), 0);
EXPECT_TRUE(in->start(true, true));
EXPECT_TRUE(out->start(false, true));
return std::make_pair<>(std::move(in), std::move(out));
};
auto get_conn_tag = [](connection_t &conn){
context_t context;
conn.get_context(context);
return context.m_connection_id;
};
using work_t = boost::asio::io_service::work;
using work_ptr = std::shared_ptr<work_t>;
using workers_t = std::vector<std::thread>;
using commands_handler_t = epee::levin::levin_commands_handler<context_t>;
using p2p_endpoint_t = nodetool::i_p2p_endpoint<contexts::cryptonote>;
using core_t = cryptonote::core;
using core_ptr = std::unique_ptr<core_t>;
using core_protocol_t = cryptonote::t_cryptonote_protocol_handler<core_t>;
using core_protocol_ptr = std::shared_ptr<core_protocol_t>;
using block_t = cryptonote::block;
using diff_t = cryptonote::difficulty_type;
using reward_t = uint64_t;
using height_t = uint64_t;
struct span {
using blocks = epee::span<const block_t>;
};
auto get_block_template = [](
core_t &core,
block_t &block,
diff_t &diff,
reward_t &reward
){
auto &storage = core.get_blockchain_storage();
const auto height = storage.get_current_blockchain_height();
const auto hardfork = storage.get_current_hard_fork_version();
block.major_version = hardfork;
block.minor_version = storage.get_ideal_hard_fork_version();
block.prev_id = storage.get_tail_id();
auto &db = storage.get_db();
block.timestamp = db.get_top_block_timestamp();
block.nonce = 0xACAB;
block.miner_tx.vin.clear();
block.miner_tx.vout.clear();
block.miner_tx.extra.clear();
block.miner_tx.version = hardfork >= 4 ? 2 : 1;
block.miner_tx.unlock_time = height + CRYPTONOTE_MINED_MONEY_UNLOCK_WINDOW;
block.miner_tx.vin.push_back(cryptonote::txin_gen{height});
cryptonote::add_tx_pub_key_to_extra(block.miner_tx, {});
cryptonote::get_block_reward(
db.get_block_weight(height - 1),
{},
db.get_block_already_generated_coins(height - 1),
reward,
hardfork
);
block.miner_tx.vout.push_back(cryptonote::tx_out{reward, cryptonote::txout_to_key{}});
diff = storage.get_difficulty_for_next_block();
};
struct stat {
struct chain {
diff_t diff;
reward_t reward;
};
};
auto add_block = [](
core_t &core,
const block_t &block,
const stat::chain &stat
){
core.get_blockchain_storage().get_db().batch_start({}, {});
core.get_blockchain_storage().get_db().add_block(
{block, cryptonote::block_to_blob(block)},
cryptonote::get_transaction_weight(block.miner_tx),
core.get_blockchain_storage().get_next_long_term_block_weight(
cryptonote::get_transaction_weight(block.miner_tx)
),
stat.diff,
stat.reward,
{}
);
core.get_blockchain_storage().get_db().batch_stop();
};
struct messages {
struct core {
using sync = cryptonote::CORE_SYNC_DATA;
};
using handshake = nodetool::COMMAND_HANDSHAKE_T<core::sync>;
};
struct net_node_t: commands_handler_t, p2p_endpoint_t {
using span_t = epee::span<const uint8_t>;
using string_t = std::string;
using zone_t = epee::net_utils::zone;
using uuid_t = boost::uuids::uuid;
using relay_t = cryptonote::relay_method;
using blobs_t = std::vector<cryptonote::blobdata>;
using id_t = nodetool::peerid_type;
using callback_t = std::function<bool(contexts::cryptonote &, id_t, uint32_t)>;
using address_t = epee::net_utils::network_address;
using connections_t = std::vector<std::pair<zone_t, uuid_t>>;
struct bans {
using subnets = std::map<epee::net_utils::ipv4_network_subnet, time_t>;
using hosts = std::map<std::string, time_t>;
};
shared_state_ptr shared_state;
core_protocol_ptr core_protocol;
virtual int invoke(int command, const span_t in, string_t &out, context_t &context) override {
if (core_protocol) {
if (command == messages::handshake::ID) {
return epee::net_utils::buff_to_t_adapter<void, typename messages::handshake::request, typename messages::handshake::response>(
command,
in,
out,
[this](int command, typename messages::handshake::request &in, typename messages::handshake::response &out, context_t &context){
core_protocol->process_payload_sync_data(in.payload_data, context, true);
core_protocol->get_payload_sync_data(out.payload_data);
return 1;
},
context
);
}
bool handled;
return core_protocol->handle_invoke_map(false, command, in, out, context, handled);
}
else
return {};
}
virtual int notify(int command, const span_t in, context_t &context) override {
if (core_protocol) {
bool handled;
string_t out;
return core_protocol->handle_invoke_map(true, command, in, out, context, handled);
}
else
return {};
}
virtual void callback(context_t &context) override {
if (core_protocol)
core_protocol->on_callback(context);
}
virtual void on_connection_new(context_t&) override {}
virtual void on_connection_close(context_t &context) override {
if (core_protocol)
core_protocol->on_connection_close(context);
}
virtual ~net_node_t() override {}
virtual bool add_host_fail(const address_t&, unsigned int = {}) override {
return {};
}
virtual bool block_host(address_t address, time_t = {}, bool = {}) override {
return {};
}
virtual bool drop_connection(const contexts::basic& context) override {
if (shared_state)
return shared_state->close(context.m_connection_id);
else
return {};
}
virtual bool for_connection(const uuid_t& uuid, callback_t f) override {
if (shared_state)
return shared_state->for_connection(uuid,[&f](context_t &context){
return f(context, context.peer_id, context.support_flags);
});
else
return {};
}
virtual bool invoke_command_to_peer(int command, const span_t in, string_t& out, const contexts::basic& context) override {
if (shared_state)
return shared_state->invoke(command, in, out, context.m_connection_id);
else
return {};
}
virtual bool invoke_notify_to_peer(int command, const span_t in, const contexts::basic& context) override {
if (shared_state)
return shared_state->notify(command, in, context.m_connection_id);
else
return {};
}
virtual bool relay_notify_to_list(int command, const span_t in, connections_t connections) override {
if (shared_state) {
for (auto &e: connections)
shared_state->notify(command, in, e.second);
}
return {};
}
virtual bool unblock_host(const address_t&) override {
return {};
}
virtual zone_t send_txs(blobs_t, const zone_t, const uuid_t&, relay_t) override {
return {};
}
virtual bans::subnets get_blocked_subnets() override {
return {};
}
virtual bans::hosts get_blocked_hosts() override {
return {};
}
virtual uint64_t get_public_connections_count() override {
if (shared_state)
return shared_state->get_connections_count();
else
return {};
}
virtual void add_used_stripe_peer(const contexts::cryptonote&) override {}
virtual void clear_used_stripe_peers() override {}
virtual void remove_used_stripe_peer(const contexts::cryptonote&) override {}
virtual void for_each_connection(callback_t f) override {
if (shared_state)
shared_state->foreach_connection([&f](context_t &context){
return f(context, context.peer_id, context.support_flags);
});
}
virtual void request_callback(const contexts::basic &context) override {
if (shared_state)
shared_state->request_callback(context.m_connection_id);
}
};
auto conduct_handshake = [get_conn_tag](net_node_t &net_node, connection_ptr conn){
event_t handshaked;
net_node.shared_state->for_connection(
get_conn_tag(*conn),
[&handshaked, &net_node](context_t &context){
typename messages::handshake::request msg;
net_node.core_protocol->get_payload_sync_data(msg.payload_data);
epee::net_utils::async_invoke_remote_command2<typename messages::handshake::response>(
context,
messages::handshake::ID,
msg,
*net_node.shared_state,
[&handshaked, &net_node](int code, const typename messages::handshake::response &msg, context_t &context){
EXPECT_TRUE(code >= 0);
net_node.core_protocol->process_payload_sync_data(msg.payload_data, context, true);
handshaked.raise();
},
P2P_DEFAULT_HANDSHAKE_INVOKE_TIMEOUT
);
return true;
}
);
handshaked.wait();
};
using path_t = boost::filesystem::path;
auto create_dir = []{
ec_t ec;
path_t path = boost::filesystem::temp_directory_path() / boost::filesystem::unique_path("daemon-%%%%%%%%%%%%%%%%", ec);
if (ec)
return path_t{};
auto success = boost::filesystem::create_directory(path, ec);
if (not ec && success)
return path;
return path_t{};
};
auto remove_tree = [](const path_t &path){
ec_t ec;
boost::filesystem::remove_all(path, ec);
};
using options_t = boost::program_options::variables_map;
struct daemon_t {
options_t options;
core_ptr core;
core_protocol_ptr core_protocol;
net_node_t net_node;
shared_state_ptr shared_state;
connections_t conn;
};
struct daemons_t {
daemon_t main;
daemon_t alt;
};
using options_description_t = boost::program_options::options_description;
const auto dir = create_dir();
ASSERT_TRUE(not dir.empty());
daemons_t daemon{
{
[&dir]{
options_t options;
boost::program_options::store(
boost::program_options::command_line_parser({
"--data-dir",
(dir / "main").string(),
"--disable-dns-checkpoints",
"--check-updates=disabled",
"--fixed-difficulty=1",
"--block-sync-size=1",
"--db-sync-mode=fastest:async:50000",
}).options([]{
options_description_t options_description{};
cryptonote::core::init_options(options_description);
return options_description;
}()).run(),
options
);
return options;
}(),
{},
{},
{},
{},
{},
},
{
[&dir]{
options_t options;
boost::program_options::store(
boost::program_options::command_line_parser({
"--data-dir",
(dir / "alt").string(),
"--disable-dns-checkpoints",
"--check-updates=disabled",
"--fixed-difficulty=1",
"--block-sync-size=1",
"--db-sync-mode=fastest:async:50000",
}).options([]{
options_description_t options_description{};
cryptonote::core::init_options(options_description);
return options_description;
}()).run(),
options
);
return options;
}(),
{},
{},
{},
{},
{},
},
};
io_context_t io_context;
work_ptr work = std::make_shared<work_t>(io_context);
workers_t workers;
while (workers.size() < 4) {
workers.emplace_back([&io_context]{
io_context.run();
});
}
connection_t::set_rate_up_limit(std::numeric_limits<int64_t>::max());
connection_t::set_rate_down_limit(std::numeric_limits<int64_t>::max());
{
daemon.main.core = core_ptr(new core_t(nullptr));
daemon.main.core->init(daemon.main.options, nullptr, nullptr);
daemon.main.net_node.core_protocol = daemon.main.core_protocol = core_protocol_ptr(new core_protocol_t(
*daemon.main.core, &daemon.main.net_node, {}
));
daemon.main.core->set_cryptonote_protocol(daemon.main.core_protocol.get());
daemon.main.core_protocol->init(daemon.main.options);
daemon.main.net_node.shared_state = daemon.main.shared_state = std::make_shared<shared_state_t>();
daemon.main.shared_state->set_handler(&daemon.main.net_node);
daemon.alt.shared_state = std::make_shared<shared_state_t>();
daemon.alt.shared_state->set_handler(&daemon.alt.net_node);
struct {
event_t prepare;
event_t check;
event_t finish;
} events;
auto connections = create_conn_pair(
connection_ptr(new connection_t(io_context, daemon.main.shared_state, {}, {})),
connection_ptr(new connection_t(io_context, daemon.alt.shared_state, {}, {}))
);
{
auto conn = connections.first;
auto shared_state = daemon.main.shared_state;
const auto tag = get_conn_tag(*conn);
conn->strand_.post([tag, conn, shared_state, &events]{
shared_state->for_connection(tag, [](context_t &context){
context.m_expect_height = -1;
context.m_expect_response = -1;
context.m_last_request_time = boost::date_time::min_date_time;
context.m_score = 0;
context.m_state = contexts::cryptonote::state_synchronizing;
return true;
});
events.prepare.raise();
events.check.wait();
shared_state->for_connection(tag, [](context_t &context){
EXPECT_TRUE(context.m_expect_height == -1);
EXPECT_TRUE(context.m_expect_response == -1);
EXPECT_TRUE(context.m_last_request_time == boost::date_time::min_date_time);
EXPECT_TRUE(context.m_score == 0);
EXPECT_TRUE(context.m_state == contexts::cryptonote::state_synchronizing);
return true;
});
events.finish.raise();
});
}
events.prepare.wait();
daemon.main.core_protocol->on_idle();
events.check.raise();
events.finish.wait();
connections.first->strand_.post([connections]{
connections.first->cancel();
});
connections.second->strand_.post([connections]{
connections.second->cancel();
});
connections.first.reset();
connections.second.reset();
while (daemon.main.shared_state->sock_count);
while (daemon.alt.shared_state->sock_count);
daemon.main.core_protocol->deinit();
daemon.main.core->stop();
daemon.main.core->deinit();
daemon.main.net_node.shared_state.reset();
daemon.main.shared_state.reset();
daemon.main.core_protocol.reset();
daemon.main.core.reset();
daemon.alt.shared_state.reset();
}
{
daemon.main.core = core_ptr(new core_t(nullptr));
daemon.main.core->init(daemon.main.options, nullptr, nullptr);
daemon.main.net_node.core_protocol = daemon.main.core_protocol = core_protocol_ptr(new core_protocol_t(
*daemon.main.core, &daemon.main.net_node, {}
));
daemon.main.core->set_cryptonote_protocol(daemon.main.core_protocol.get());
daemon.main.core->set_checkpoints({});
daemon.main.core_protocol->init(daemon.main.options);
daemon.main.net_node.shared_state = daemon.main.shared_state = std::make_shared<shared_state_t>();
daemon.main.shared_state->set_handler(&daemon.main.net_node);
daemon.alt.core = core_ptr(new core_t(nullptr));
daemon.alt.core->init(daemon.alt.options, nullptr, nullptr);
daemon.alt.net_node.core_protocol = daemon.alt.core_protocol = core_protocol_ptr(new core_protocol_t(
*daemon.alt.core, &daemon.alt.net_node, {}
));
daemon.alt.core->set_cryptonote_protocol(daemon.alt.core_protocol.get());
daemon.alt.core->set_checkpoints({});
daemon.alt.core_protocol->init(daemon.alt.options);
daemon.alt.net_node.shared_state = daemon.alt.shared_state = std::make_shared<shared_state_t>();
daemon.alt.shared_state->set_handler(&daemon.alt.net_node);
struct {
io_context_t io_context;
work_ptr work;
workers_t workers;
} check;
check.work = std::make_shared<work_t>(check.io_context);
check.workers.emplace_back([&check]{
check.io_context.run();
});
while (daemon.main.conn.size() < 1) {
daemon.main.conn.emplace_back(new connection_t(check.io_context, daemon.main.shared_state, {}, {}));
daemon.alt.conn.emplace_back(new connection_t(io_context, daemon.alt.shared_state, {}, {}));
create_conn_pair(daemon.main.conn.back(), daemon.alt.conn.back());
conduct_handshake(daemon.alt.net_node, daemon.alt.conn.back());
}
struct {
event_t prepare;
event_t sync;
event_t finish;
} events;
{
auto conn = daemon.main.conn.back();
auto shared_state = daemon.main.shared_state;
const auto tag = get_conn_tag(*conn);
conn->strand_.post([tag, conn, shared_state, &events]{
shared_state->for_connection(tag, [](context_t &context){
EXPECT_TRUE(context.m_state == contexts::cryptonote::state_normal);
return true;
});
events.prepare.raise();
events.sync.wait();
shared_state->for_connection(tag, [](context_t &context){
EXPECT_TRUE(context.m_state == contexts::cryptonote::state_normal);
return true;
});
events.finish.raise();
});
}
events.prepare.wait();
daemon.main.core->get_blockchain_storage().add_block_notify(
[&events](height_t height, span::blocks blocks){
if (height >= CRYPTONOTE_PRUNING_STRIPE_SIZE)
events.sync.raise();
}
);
{
stat::chain stat{
daemon.alt.core->get_blockchain_storage().get_db().get_block_cumulative_difficulty(
daemon.alt.core->get_current_blockchain_height() - 1
),
daemon.alt.core->get_blockchain_storage().get_db().get_block_already_generated_coins(
daemon.alt.core->get_current_blockchain_height() - 1
),
};
while (daemon.alt.core->get_current_blockchain_height() < CRYPTONOTE_PRUNING_STRIPE_SIZE + CRYPTONOTE_PRUNING_TIP_BLOCKS) {
block_t block;
diff_t diff;
reward_t reward;
get_block_template(*daemon.alt.core, block, diff, reward);
stat.diff += diff;
stat.reward = stat.reward < (MONEY_SUPPLY - stat.reward) ? stat.reward + reward : MONEY_SUPPLY;
add_block(*daemon.alt.core, block, stat);
if (daemon.main.core->get_current_blockchain_height() + 1 < CRYPTONOTE_PRUNING_STRIPE_SIZE)
add_block(*daemon.main.core, block, stat);
}
}
while (daemon.main.conn.size() < 2) {
daemon.main.conn.emplace_back(new connection_t(io_context, daemon.main.shared_state, {}, {}));
daemon.alt.conn.emplace_back(new connection_t(io_context, daemon.alt.shared_state, {}, {}));
create_conn_pair(daemon.main.conn.back(), daemon.alt.conn.back());
conduct_handshake(daemon.alt.net_node, daemon.alt.conn.back());
}
events.finish.wait();
for (;daemon.main.conn.size(); daemon.main.conn.pop_back()) {
auto conn = daemon.main.conn.back();
conn->strand_.post([conn]{
conn->cancel();
});
}
for (;daemon.alt.conn.size(); daemon.alt.conn.pop_back()) {
auto conn = daemon.alt.conn.back();
conn->strand_.post([conn]{
conn->cancel();
});
}
while (daemon.main.shared_state->sock_count);
while (daemon.alt.shared_state->sock_count);
daemon.main.core_protocol->deinit();
daemon.main.core->stop();
daemon.main.core->deinit();
daemon.main.net_node.shared_state.reset();
daemon.main.shared_state.reset();
daemon.main.core_protocol.reset();
daemon.main.core.reset();
daemon.alt.core_protocol->deinit();
daemon.alt.core->stop();
daemon.alt.core->deinit();
daemon.alt.net_node.shared_state.reset();
daemon.alt.shared_state.reset();
daemon.alt.core_protocol.reset();
daemon.alt.core.reset();
check.work.reset();
for (auto& w: check.workers) {
w.join();
}
}
work.reset();
for (auto& w: workers) {
w.join();
}
remove_tree(dir);
}
namespace nodetool { template class node_server<cryptonote::t_cryptonote_protocol_handler<test_core>>; }
namespace cryptonote { template class t_cryptonote_protocol_handler<test_core>; }

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