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connection: add segfault and deadlocks demo

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anon 2021-06-28 19:13:02 +00:00 committed by j-berman
parent b54d5ae383
commit 724ff21447
1 changed files with 252 additions and 2 deletions
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254
tests/unit_tests/epee_boosted_tcp_server.cpp
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@ -31,6 +31,8 @@
#include <boost/chrono/chrono.hpp>
#include <boost/thread/condition_variable.hpp>
#include <boost/thread/mutex.hpp>
#include <condition_variable>
#include <mutex>
#include "gtest/gtest.h"
@ -276,6 +278,11 @@ TEST(test_epee_connection, test_lifetime)
ASSERT_TRUE(shared_state->get_connections_count() == 0);
constexpr auto DELAY = 30;
constexpr auto TIMEOUT = 1;
while (server.get_connections_count()) {
server.get_config_shared()->del_in_connections(
server.get_config_shared()->get_in_connections_count()
);
}
server.get_config_shared()->set_handler(new command_handler_t(DELAY), &command_handler_t::destroy);
for (auto i = 0; i < N; ++i) {
tag = create_connection();
@ -332,7 +339,7 @@ TEST(test_epee_connection, test_lifetime)
),
&command_handler_t::destroy
);
for (auto i = 0; i < N; ++i) {
for (auto i = 0; i < N * N * N; ++i) {
{
connection_ptr conn(new connection_t(io_context, shared_state, {}, {}));
conn->socket().connect(endpoint);
@ -342,6 +349,7 @@ TEST(test_epee_connection, test_lifetime)
}
ASSERT_TRUE(shared_state->get_connections_count() == 1);
shared_state->del_out_connections(1);
while (shared_state->sock_count);
ASSERT_TRUE(shared_state->get_connections_count() == 0);
}
@ -452,7 +460,11 @@ TEST(test_epee_connection, test_lifetime)
}
for (;workers.size(); workers.pop_back())
workers.back().join();
while (server.get_connections_count()) {
server.get_config_shared()->del_in_connections(
server.get_config_shared()->get_in_connections_count()
);
}
});
for (auto& w: workers) {
@ -462,3 +474,241 @@ TEST(test_epee_connection, test_lifetime)
server.timed_wait_server_stop(5 * 1000);
server.deinit_server();
}
TEST(test_epee_connection, ssl_shutdown)
{
struct context_t: epee::net_utils::connection_context_base {
static constexpr size_t get_max_bytes(int) noexcept { return -1; }
static constexpr int handshake_command() noexcept { return 1001; }
static constexpr bool handshake_complete() noexcept { return true; }
};
struct command_handler_t: epee::levin::levin_commands_handler<context_t> {
virtual int invoke(int, const epee::span<const uint8_t>, epee::byte_stream&, context_t&) override { return {}; }
virtual int notify(int, const epee::span<const uint8_t>, context_t&) override { return {}; }
virtual void callback(context_t&) override {}
virtual void on_connection_new(context_t&) override {}
virtual void on_connection_close(context_t&) override { }
virtual ~command_handler_t() override {}
static void destroy(epee::levin::levin_commands_handler<context_t>* ptr) { delete ptr; }
};
using handler_t = epee::levin::async_protocol_handler<context_t>;
using io_context_t = boost::asio::io_service;
using endpoint_t = boost::asio::ip::tcp::endpoint;
using server_t = epee::net_utils::boosted_tcp_server<handler_t>;
using socket_t = boost::asio::ip::tcp::socket;
using ssl_socket_t = boost::asio::ssl::stream<socket_t>;
using ssl_context_t = boost::asio::ssl::context;
using ec_t = boost::system::error_code;
endpoint_t endpoint(boost::asio::ip::address::from_string("127.0.0.1"), 5263);
server_t server(epee::net_utils::e_connection_type_P2P);
server.init_server(endpoint.port(),
endpoint.address().to_string(),
0,
"",
false,
true,
epee::net_utils::ssl_support_t::e_ssl_support_enabled
);
server.get_config_shared()->set_handler(new command_handler_t, &command_handler_t::destroy);
server.run_server(2, false);
ssl_context_t ssl_context{boost::asio::ssl::context::sslv23};
io_context_t io_context;
ssl_socket_t socket(io_context, ssl_context);
ec_t ec;
socket.next_layer().connect(endpoint, ec);
EXPECT_EQ(ec.value(), 0);
socket.handshake(boost::asio::ssl::stream_base::client, ec);
EXPECT_EQ(ec.value(), 0);
std::this_thread::sleep_for(std::chrono::milliseconds(100));
while (server.get_config_shared()->get_connections_count() < 1);
server.get_config_shared()->del_in_connections(1);
while (server.get_config_shared()->get_connections_count() > 0);
server.send_stop_signal();
EXPECT_TRUE(server.timed_wait_server_stop(5 * 1000));
server.deinit_server();
socket.next_layer().shutdown(boost::asio::ip::tcp::socket::shutdown_both, ec);
socket.next_layer().close(ec);
socket.shutdown(ec);
}
TEST(test_epee_connection, ssl_handshake)
{
using io_context_t = boost::asio::io_service;
using work_t = boost::asio::io_service::work;
using work_ptr = std::shared_ptr<work_t>;
using workers_t = std::vector<std::thread>;
using socket_t = boost::asio::ip::tcp::socket;
using ssl_socket_t = boost::asio::ssl::stream<socket_t>;
using ssl_socket_ptr = std::unique_ptr<ssl_socket_t>;
using ssl_options_t = epee::net_utils::ssl_options_t;
io_context_t io_context;
work_ptr work(std::make_shared<work_t>(io_context));
workers_t workers;
auto constexpr N = 2;
while (workers.size() < N) {
workers.emplace_back([&io_context]{
io_context.run();
});
}
ssl_options_t ssl_options{{}};
auto ssl_context = ssl_options.create_context();
for (size_t i = 0; i < N * N * N; ++i) {
ssl_socket_ptr ssl_socket(new ssl_socket_t(io_context, ssl_context));
ssl_socket->next_layer().open(boost::asio::ip::tcp::v4());
for (size_t i = 0; i < N; ++i) {
io_context.post([]{
std::this_thread::sleep_for(std::chrono::milliseconds(50));
});
}
EXPECT_EQ(
ssl_options.handshake(
*ssl_socket,
ssl_socket_t::server,
{},
{},
std::chrono::milliseconds(0)
),
false
);
ssl_socket->next_layer().close();
ssl_socket.reset();
}
work.reset();
for (;workers.size(); workers.pop_back())
workers.back().join();
}
TEST(boosted_tcp_server, strand_deadlock)
{
using context_t = epee::net_utils::connection_context_base;
using lock_t = std::mutex;
using unique_lock_t = std::unique_lock<lock_t>;
struct config_t {
using condition_t = std::condition_variable_any;
using lock_guard_t = std::lock_guard<lock_t>;
void notify_success()
{
lock_guard_t guard(lock);
success = true;
condition.notify_all();
}
lock_t lock;
condition_t condition;
bool success;
};
struct handler_t {
using config_type = config_t;
using connection_context = context_t;
using byte_slice_t = epee::byte_slice;
using socket_t = epee::net_utils::i_service_endpoint;
handler_t(socket_t *socket, config_t &config, context_t &context):
socket(socket),
config(config),
context(context)
{}
void after_init_connection()
{
unique_lock_t guard(lock);
if (not context.m_is_income) {
guard.unlock();
socket->do_send(byte_slice_t{"."});
}
}
void handle_qued_callback()
{
}
bool handle_recv(const char *data, size_t bytes_transferred)
{
unique_lock_t guard(lock);
if (not context.m_is_income) {
if (context.m_recv_cnt == 1024) {
guard.unlock();
socket->do_send(byte_slice_t{"."});
}
}
else {
if (context.m_recv_cnt == 1) {
for(size_t i = 0; i < 1024; ++i) {
guard.unlock();
socket->do_send(byte_slice_t{"."});
guard.lock();
}
}
else if(context.m_recv_cnt == 2) {
guard.unlock();
socket->close();
}
}
return true;
}
void release_protocol()
{
unique_lock_t guard(lock);
if(not context.m_is_income
and context.m_recv_cnt == 1024
and context.m_send_cnt == 2
) {
guard.unlock();
config.notify_success();
}
}
lock_t lock;
socket_t *socket;
config_t &config;
context_t &context;
};
using server_t = epee::net_utils::boosted_tcp_server<handler_t>;
using endpoint_t = boost::asio::ip::tcp::endpoint;
endpoint_t endpoint(boost::asio::ip::address::from_string("127.0.0.1"), 5262);
server_t server(epee::net_utils::e_connection_type_P2P);
server.init_server(
endpoint.port(),
endpoint.address().to_string(),
{},
{},
{},
true,
epee::net_utils::ssl_support_t::e_ssl_support_disabled
);
server.run_server(2, {});
server.async_call(
[&]{
context_t context;
ASSERT_TRUE(
server.connect(
endpoint.address().to_string(),
std::to_string(endpoint.port()),
5,
context,
"0.0.0.0",
epee::net_utils::ssl_support_t::e_ssl_support_disabled
)
);
}
);
{
unique_lock_t guard(server.get_config_object().lock);
EXPECT_TRUE(
server.get_config_object().condition.wait_for(
guard,
std::chrono::seconds(5),
[&] { return server.get_config_object().success; }
)
);
}
server.send_stop_signal();
server.timed_wait_server_stop(5 * 1000);
server.deinit_server();
}