/* Copyright (c) 2016, Arvid Norberg All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the author nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "libtorrent/session.hpp" #include "libtorrent/torrent_handle.hpp" #include "libtorrent/settings_pack.hpp" #include "libtorrent/alert_types.hpp" #include "libtorrent/deadline_timer.hpp" #include "simulator/http_server.hpp" #include "settings.hpp" #include "create_torrent.hpp" #include "setup_transfer.hpp" // for addr() #include "simulator/simulator.hpp" #include "setup_swarm.hpp" #include "utils.hpp" #include "simulator/socks_server.hpp" #include "simulator/utils.hpp" #include "fake_peer.hpp" #include using namespace sim; using namespace lt; // this is the general template for these tests. create the session with custom // settings (Settings), set up the test, by adding torrents with certain // arguments (Setup), run the test and verify the end state (Test) template void run_test(Setup const& setup , HandleAlerts const& on_alert , Test const& test) { // setup the simulation sim::default_config network_cfg; sim::simulation sim{network_cfg}; std::unique_ptr ios = make_io_service(sim, 0); lt::session_proxy zombie; sim::asio::io_service proxy_ios{sim, addr("50.50.50.50") }; sim::socks_server socks4(proxy_ios, 4444, 4); sim::socks_server socks5(proxy_ios, 5555, 5); lt::settings_pack pack = settings(); // create session std::shared_ptr ses = std::make_shared(pack, *ios); // set up test, like adding torrents (customization point) setup(*ses); // only monitor alerts for session 0 (the downloader) print_alerts(*ses, [=](lt::session& ses, lt::alert const* a) { on_alert(ses, a); }); lt::add_torrent_params params = ::create_torrent(1); params.flags &= ~lt::torrent_flags::auto_managed; params.flags &= ~lt::torrent_flags::paused; params.save_path = save_path(0); ses->async_add_torrent(params); // set up a timer to fire later, to verify everything we expected to happen // happened sim::timer t(sim, lt::seconds(100), [&](boost::system::error_code const&) { std::printf("shutting down\n"); // shut down zombie = ses->abort(); ses.reset(); }); test(sim, *ses, params.ti); } TORRENT_TEST(socks5_tcp_announce) { using namespace lt; int tracker_port = -1; int alert_port = -1; run_test( [](lt::session& ses) { set_proxy(ses, settings_pack::socks5); lt::add_torrent_params params; params.info_hash = sha1_hash("abababababababababab"); params.trackers.push_back("http://2.2.2.2:8080/announce"); params.save_path = "."; ses.async_add_torrent(params); }, [&alert_port](lt::session&, lt::alert const* alert) { if (auto* a = lt::alert_cast(alert)) { if (a->socket_type == socket_type_t::udp) { alert_port = a->port; } } }, [&tracker_port](sim::simulation& sim, lt::session& , std::shared_ptr ti) { sim::asio::io_service web_server(sim, address_v4::from_string("2.2.2.2")); // listen on port 8080 sim::http_server http(web_server, 8080); http.register_handler("/announce" , [&tracker_port](std::string method, std::string req , std::map&) { if (req.find("&event=started") != std::string::npos) { std::string::size_type port_pos = req.find("&port="); TEST_CHECK(port_pos != std::string::npos); if (port_pos != std::string::npos) { tracker_port = atoi(req.c_str() + port_pos + 6); } } return sim::send_response(200, "OK", 27) + "d8:intervali1800e5:peers0:e"; }); sim.run(); } ); TEST_EQUAL(tracker_port, 6881); TEST_CHECK(alert_port != -1); } TORRENT_TEST(udp_tracker) { using namespace lt; bool tracker_alert = false; bool connected = false; bool announced = false; run_test( [](lt::session& ses) { set_proxy(ses, settings_pack::socks5); // The socks server in libsimulator does not support forwarding UDP // packets to hostnames (just IPv4 destinations) settings_pack p; p.set_bool(settings_pack::proxy_hostnames, false); ses.apply_settings(p); lt::add_torrent_params params; params.info_hash = sha1_hash("abababababababababab"); params.trackers.push_back("udp://2.2.2.2:8080/announce"); params.save_path = "."; ses.async_add_torrent(params); }, [&tracker_alert](lt::session&, lt::alert const* alert) { if (lt::alert_cast(alert)) tracker_alert = true; }, [&](sim::simulation& sim, lt::session& , std::shared_ptr ti) { // listen on port 8080 udp_server tracker(sim, "2.2.2.2", 8080, [&](char const* msg, int size) { using namespace lt::detail; std::vector ret; TEST_CHECK(size >= 16); if (size < 16) return ret; std::uint64_t connection_id = read_uint64(msg); std::uint32_t action = read_uint32(msg); std::uint32_t transaction_id = read_uint32(msg); std::uint64_t const conn_id = 0xfeedface1337ull; if (action == 0) { std::printf("udp connect\n"); // udp tracker connect TEST_CHECK(connection_id == 0x41727101980ull); auto inserter = std::back_inserter(ret); write_uint32(0, inserter); // connect write_uint32(transaction_id, inserter); write_uint64(conn_id, inserter); connected = true; } else if (action == 1) { std::printf("udp announce\n"); // udp tracker announce TEST_EQUAL(connection_id, conn_id); auto inserter = std::back_inserter(ret); write_uint32(1, inserter); // announce write_uint32(transaction_id, inserter); write_uint32(1800, inserter); write_uint32(0, inserter); // leechers write_uint32(0, inserter); // seeders announced = true; } else { std::printf("unsupported udp tracker action: %d\n", action); } return ret; }); sim.run(); } ); TEST_CHECK(tracker_alert); TEST_CHECK(connected); TEST_CHECK(announced); } TORRENT_TEST(socks5_udp_retry) { // this test is asserting that when a UDP associate command fails, we have a // 5 second delay before we try again. There is no need to actually add a // torrent for this test, just to open the udp socket with a socks5 proxy using namespace libtorrent; // setup the simulation sim::default_config network_cfg; sim::simulation sim{network_cfg}; std::unique_ptr ios = make_io_service(sim, 0); lt::session_proxy zombie; sim::asio::io_service proxy_ios{sim, addr("50.50.50.50") }; // close UDP associate connectons prematurely sim::socks_server socks5(proxy_ios, 5555, 5, socks_flag::disconnect_udp_associate); lt::settings_pack pack = settings(); // create session std::shared_ptr ses = std::make_shared(pack, *ios); print_alerts(*ses); set_proxy(*ses, settings_pack::socks5); sim::timer t(sim, lt::seconds(60), [&](boost::system::error_code const&) { fprintf(stderr, "shutting down\n"); // shut down zombie = ses->abort(); ses.reset(); }); sim.run(); // number of UDP ASSOCIATE commands invoked on the socks proxy // We run for 60 seconds. The sokcks5 retry interval is expected to be 5 // seconds, meaning there should have been 12 connection attempts TEST_EQUAL(socks5.cmd_counts()[2], 12); }