441 lines
13 KiB
C++
441 lines
13 KiB
C++
/*
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Copyright (c) 2013, Arvid Norberg
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "libtorrent/policy.hpp"
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#include "libtorrent/torrent_handle.hpp"
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#include "libtorrent/torrent_peer_allocator.hpp"
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#include "libtorrent/peer_connection_interface.hpp"
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#include "libtorrent/stat.hpp"
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#include "libtorrent/ip_voter.hpp"
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#include "libtorrent/ip_filter.hpp"
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#include "libtorrent/peer_info.hpp"
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#include "libtorrent/random.hpp"
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#include "test.hpp"
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#include "setup_transfer.hpp"
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#include <vector>
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#include <stdarg.h>
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using namespace libtorrent;
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tcp::endpoint ep(char const* ip, int port)
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{
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return tcp::endpoint(address_v4::from_string(ip), port);
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}
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struct mock_peer_connection : peer_connection_interface
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{
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mock_peer_connection(bool out, tcp::endpoint const& ep)
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: m_choked(false)
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, m_outgoing(out)
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, m_tp(NULL)
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, m_remote(ep)
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{
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for (int i = 0; i < 20; ++i) m_id[i] = rand();
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}
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virtual ~mock_peer_connection() {}
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#if defined TORRENT_VERBOSE_LOGGING || defined TORRENT_ERROR_LOGGING
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virtual void peer_log(char const* fmt, ...) const
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{
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va_list v;
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va_start(v, fmt);
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vprintf(fmt, v);
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va_end(v);
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}
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#endif
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libtorrent::stat m_stat;
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bool m_choked;
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bool m_outgoing;
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torrent_peer* m_tp;
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tcp::endpoint m_remote;
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peer_id m_id;
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virtual void get_peer_info(peer_info& p) const {}
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virtual tcp::endpoint const& remote() const { return m_remote; }
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virtual tcp::endpoint local_endpoint() const { return ep("127.0.0.1", 8080); }
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virtual void disconnect(error_code const& ec
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, peer_connection_interface::operation_t op, int error = 0)
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{ /* remove from mock_torrent list */ m_tp = 0; }
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virtual peer_id const& pid() const { return m_id; }
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virtual void set_holepunch_mode() {}
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virtual torrent_peer* peer_info_struct() const { return m_tp; }
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virtual void set_peer_info(torrent_peer* pi) { m_tp = pi; }
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virtual bool is_outgoing() const { return m_outgoing; }
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virtual void add_stat(size_type downloaded, size_type uploaded)
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{ m_stat.add_stat(downloaded, uploaded); }
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virtual bool fast_reconnect() const { return true; }
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virtual bool is_choked() const { return m_choked; }
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virtual bool failed() const { return false; }
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virtual libtorrent::stat const& statistics() const { return m_stat; }
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};
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struct mock_torrent
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{
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mock_torrent() : m_p(NULL) {}
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virtual ~mock_torrent() {}
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bool connect_to_peer(torrent_peer* peerinfo, bool ignore_limit = false)
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{
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TORRENT_ASSERT(peerinfo->connection == NULL);
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if (peerinfo->connection) return false;
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boost::shared_ptr<mock_peer_connection> c(new mock_peer_connection(true, peerinfo->ip()));
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m_connections.push_back(c);
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m_p->set_connection(peerinfo, c.get());
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return true;
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}
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#if defined TORRENT_VERBOSE_LOGGING || defined TORRENT_LOGGING || defined TORRENT_ERROR_LOGGING
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void debug_log(const char* fmt, ...) const
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{
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va_list v;
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va_start(v, fmt);
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vprintf(fmt, v);
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va_end(v);
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}
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#endif
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policy* m_p;
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private:
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std::vector<boost::shared_ptr<mock_peer_connection> > m_connections;
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};
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int test_main()
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{
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torrent_peer_allocator allocator;
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external_ip ext_ip;
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torrent_state st;
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st.is_finished = false;
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st.is_paused = false;
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st.max_peerlist_size = 1000;
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st.allow_multiple_connections_per_ip = false;
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st.peer_allocator = &allocator;
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st.ip = &ext_ip;
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st.port = 9999;
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// test multiple peers with the same IP
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// when disallowing it
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{
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mock_torrent t;
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policy p;
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t.m_p = &p;
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TEST_EQUAL(p.num_connect_candidates(), 0);
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torrent_peer* peer1 = p.add_peer(ep("10.0.0.2", 3000), 0, 0, &st);
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TEST_EQUAL(p.num_peers(), 1);
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TEST_EQUAL(p.num_connect_candidates(), 1);
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st.erased.clear();
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torrent_peer* peer2 = p.add_peer(ep("10.0.0.2", 9020), 0, 0, &st);
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TEST_EQUAL(p.num_peers(), 1);
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TEST_EQUAL(peer1, peer2);
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TEST_EQUAL(p.num_connect_candidates(), 1);
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st.erased.clear();
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}
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// test multiple peers with the same IP
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// when allowing it
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{
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mock_torrent t;
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st.allow_multiple_connections_per_ip = true;
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policy p;
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t.m_p = &p;
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torrent_peer* peer1 = p.add_peer(ep("10.0.0.2", 3000), 0, 0, &st);
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TEST_EQUAL(p.num_connect_candidates(), 1);
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TEST_EQUAL(p.num_peers(), 1);
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st.erased.clear();
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torrent_peer* peer2 = p.add_peer(ep("10.0.0.2", 9020), 0, 0, &st);
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TEST_EQUAL(p.num_peers(), 2);
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TEST_CHECK(peer1 != peer2);
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TEST_EQUAL(p.num_connect_candidates(), 2);
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st.erased.clear();
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}
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// test adding two peers with the same IP, but different ports, to
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// make sure they can be connected at the same time
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// with allow_multiple_connections_per_ip enabled
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{
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mock_torrent t;
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st.allow_multiple_connections_per_ip = true;
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policy p;
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t.m_p = &p;
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torrent_peer* peer1 = p.add_peer(ep("10.0.0.2", 3000), 0, 0, &st);
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TEST_EQUAL(p.num_connect_candidates(), 1);
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st.erased.clear();
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TEST_EQUAL(p.num_peers(), 1);
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torrent_peer* tp = p.connect_one_peer(0, &st);
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TEST_CHECK(tp);
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t.connect_to_peer(tp);
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st.erased.clear();
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// we only have one peer, we can't
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// connect another one
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tp = p.connect_one_peer(0, &st);
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TEST_CHECK(tp == NULL);
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st.erased.clear();
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torrent_peer* peer2 = p.add_peer(ep("10.0.0.2", 9020), 0, 0, &st);
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TEST_EQUAL(p.num_peers(), 2);
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TEST_CHECK(peer1 != peer2);
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TEST_EQUAL(p.num_connect_candidates(), 1);
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st.erased.clear();
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tp = p.connect_one_peer(0, &st);
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TEST_CHECK(tp);
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t.connect_to_peer(tp);
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TEST_EQUAL(p.num_connect_candidates(), 0);
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st.erased.clear();
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}
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// test adding two peers with the same IP, but different ports, to
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// make sure they can not be connected at the same time
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// with allow_multiple_connections_per_ip disabled
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{
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mock_torrent t;
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st.allow_multiple_connections_per_ip = false;
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policy p;
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t.m_p = &p;
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torrent_peer* peer1 = p.add_peer(ep("10.0.0.2", 3000), 0, 0, &st);
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TEST_EQUAL(p.num_connect_candidates(), 1);
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TEST_EQUAL(peer1->port, 3000);
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st.erased.clear();
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TEST_EQUAL(p.num_peers(), 1);
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torrent_peer* tp = p.connect_one_peer(0, &st);
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TEST_CHECK(tp);
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t.connect_to_peer(tp);
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st.erased.clear();
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// we only have one peer, we can't
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// connect another one
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tp = p.connect_one_peer(0, &st);
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TEST_CHECK(tp == NULL);
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st.erased.clear();
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torrent_peer* peer2 = p.add_peer(ep("10.0.0.2", 9020), 0, 0, &st);
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TEST_EQUAL(p.num_peers(), 1);
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TEST_EQUAL(peer2->port, 9020);
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TEST_CHECK(peer1 == peer2);
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TEST_EQUAL(p.num_connect_candidates(), 0);
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st.erased.clear();
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}
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// test incoming connection
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// and update_peer_port
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{
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mock_torrent t;
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st.allow_multiple_connections_per_ip = false;
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policy p;
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t.m_p = &p;
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TEST_EQUAL(p.num_connect_candidates(), 0);
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boost::shared_ptr<mock_peer_connection> c(new mock_peer_connection(true, ep("10.0.0.1", 8080)));
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p.new_connection(*c, 0, &st);
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TEST_EQUAL(p.num_connect_candidates(), 0);
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TEST_EQUAL(p.num_peers(), 1);
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st.erased.clear();
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p.update_peer_port(4000, c->peer_info_struct(), peer_info::incoming, &st);
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TEST_EQUAL(p.num_connect_candidates(), 0);
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TEST_EQUAL(p.num_peers(), 1);
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TEST_EQUAL(c->peer_info_struct()->port, 4000);
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st.erased.clear();
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}
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// test incoming connection
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// and update_peer_port, causing collission
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{
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mock_torrent t;
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st.allow_multiple_connections_per_ip = true;
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policy p;
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t.m_p = &p;
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torrent_peer* peer2 = p.add_peer(ep("10.0.0.1", 4000), 0, 0, &st);
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TEST_CHECK(peer2);
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TEST_EQUAL(p.num_connect_candidates(), 1);
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boost::shared_ptr<mock_peer_connection> c(new mock_peer_connection(true, ep("10.0.0.1", 8080)));
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p.new_connection(*c, 0, &st);
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TEST_EQUAL(p.num_connect_candidates(), 1);
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// at this point we have two peers, because we think they have different
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// ports
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TEST_EQUAL(p.num_peers(), 2);
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st.erased.clear();
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// this peer will end up having the same port as the existing peer in the list
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p.update_peer_port(4000, c->peer_info_struct(), peer_info::incoming, &st);
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TEST_EQUAL(p.num_connect_candidates(), 0);
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// the expected behavior is to replace that one
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TEST_EQUAL(p.num_peers(), 1);
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TEST_EQUAL(c->peer_info_struct()->port, 4000);
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st.erased.clear();
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}
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// test ip filter
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{
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mock_torrent t;
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st.allow_multiple_connections_per_ip = false;
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policy p;
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t.m_p = &p;
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torrent_peer* peer1 = p.add_peer(ep("10.0.0.2", 3000), 0, 0, &st);
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TEST_EQUAL(p.num_connect_candidates(), 1);
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TEST_EQUAL(peer1->port, 3000);
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st.erased.clear();
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torrent_peer* peer2 = p.add_peer(ep("11.0.0.2", 9020), 0, 0, &st);
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TEST_EQUAL(p.num_peers(), 2);
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TEST_EQUAL(peer2->port, 9020);
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TEST_CHECK(peer1 != peer2);
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TEST_EQUAL(p.num_connect_candidates(), 2);
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st.erased.clear();
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// connect both peers
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torrent_peer* tp = p.connect_one_peer(0, &st);
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TEST_CHECK(tp);
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t.connect_to_peer(tp);
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st.erased.clear();
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tp = p.connect_one_peer(0, &st);
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TEST_CHECK(tp);
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t.connect_to_peer(tp);
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TEST_EQUAL(p.num_peers(), 2);
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TEST_EQUAL(p.num_connect_candidates(), 0);
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st.erased.clear();
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// now, filter one of the IPs and make sure the peer is removed
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ip_filter filter;
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filter.add_rule(address_v4::from_string("11.0.0.0"), address_v4::from_string("255.255.255.255"), 1);
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std::vector<address> banned;
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p.apply_ip_filter(filter, &st, banned);
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// we just erased a peer, because it was filtered by the ip filter
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TEST_EQUAL(st.erased.size(), 1);
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TEST_EQUAL(p.num_connect_candidates(), 0);
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TEST_EQUAL(p.num_peers(), 1);
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TEST_EQUAL(banned.size(), 1);
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TEST_EQUAL(banned[0], address_v4::from_string("11.0.0.2"));
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}
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// test banning peers
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{
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mock_torrent t;
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st.allow_multiple_connections_per_ip = false;
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policy p;
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t.m_p = &p;
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torrent_peer* peer1 = p.add_peer(ep("10.0.0.1", 4000), 0, 0, &st);
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TEST_CHECK(peer1);
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st.erased.clear();
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TEST_EQUAL(p.num_connect_candidates(), 1);
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boost::shared_ptr<mock_peer_connection> c(new mock_peer_connection(true, ep("10.0.0.1", 8080)));
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p.new_connection(*c, 0, &st);
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TEST_EQUAL(p.num_connect_candidates(), 0);
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TEST_EQUAL(p.num_peers(), 1);
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st.erased.clear();
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// now, ban the peer
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bool ok = p.ban_peer(c->peer_info_struct());
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TEST_EQUAL(ok, true);
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TEST_EQUAL(peer1->banned, true);
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// we still have it in the list
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TEST_EQUAL(p.num_peers(), 1);
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// it's just not a connect candidate, nor allowed to receive incoming connections
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TEST_EQUAL(p.num_connect_candidates(), 0);
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p.connection_closed(*c, 0, &st);
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TEST_EQUAL(p.num_peers(), 1);
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TEST_EQUAL(p.num_connect_candidates(), 0);
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st.erased.clear();
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c.reset(new mock_peer_connection(true, ep("10.0.0.1", 8080)));
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ok = p.new_connection(*c, 0, &st);
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// since it's banned, we should not allow this incoming connection
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TEST_EQUAL(ok, false);
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TEST_EQUAL(p.num_connect_candidates(), 0);
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st.erased.clear();
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}
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// test erase_peers when we fill up the peer list
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{
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mock_torrent t;
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st.max_peerlist_size = 100;
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st.allow_multiple_connections_per_ip = true;
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policy p;
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t.m_p = &p;
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for (int i = 0; i < 100; ++i)
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{
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torrent_peer* peer = p.add_peer(rand_tcp_ep(), 0, 0, &st);
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TEST_EQUAL(st.erased.size(), 0);
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st.erased.clear();
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TEST_CHECK(peer);
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if (peer == NULL || st.erased.size() > 0)
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{
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fprintf(stderr, "unexpected rejection of peer: %d in list. added peer %p, erased peers %d\n"
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, p.num_peers(), peer, int(st.erased.size()));
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}
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}
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TEST_EQUAL(p.num_peers(), 100);
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// trigger the eviction of one peer
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torrent_peer* peer = p.add_peer(rand_tcp_ep(), 0, 0, &st);
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// we either removed an existing peer, or rejected this one
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TEST_CHECK(st.erased.size() == 1 || peer == NULL);
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}
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// TODO: test applying a port_filter
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// TODO: test erasing peers
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// TODO: test using port and ip filter
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// TODO: test incrementing failcount (and make sure we no longer consider the peer a connect canidate)
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// TODO: test max peerlist size
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// TODO: test logic for which connection to keep when receiving an incoming connection to the same peer as we just made an outgoing connection to
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// TODO: test update_peer_port with allow_multiple_connections_per_ip
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// TODO: test set_seed
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// TODO: test has_peer
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// TODO: test insert_peer with a full list
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// TODO: test add i2p peers
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// TODO: test allow_i2p_mixed
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// TODO: test insert_peer failing
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// TODO: test IPv6
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// TODO: test connect_to_peer() failing
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// TODO: test connection_closed
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// TODO: test recalculate connect candidates
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// TODO: add tests here
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return 0;
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}
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