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monero/src/p2p/net_node.h
moneromooo-monero 7591c528d0
p2p: fallback on seed nodes if we can't make a connection 
This avoids failing to connect to the network in case all
known peers are unavailable (which can happen if the peer
list is small).
2017-08-09 22:55:25 +01:00

341 lines
16 KiB
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// Copyright (c) 2014-2017, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. 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.
//
// 3. Neither the name of the copyright holder 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 HOLDER 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.
//
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
#pragma once
#include <boost/thread.hpp>
#include <boost/bind.hpp>
#include <boost/bimap.hpp>
#include <boost/multi_index_container.hpp>
#include <boost/multi_index/ordered_index.hpp>
#include <boost/multi_index/identity.hpp>
#include <boost/multi_index/member.hpp>
#include <boost/multi_index/global_fun.hpp>
#include <boost/program_options/options_description.hpp>
#include <boost/program_options/variables_map.hpp>
#include <boost/serialization/version.hpp>
#include <boost/uuid/uuid.hpp>
#include <boost/serialization/map.hpp>
#include "cryptonote_config.h"
#include "warnings.h"
#include "net/levin_server_cp2.h"
#include "p2p_protocol_defs.h"
#include "storages/levin_abstract_invoke2.h"
#include "net_peerlist.h"
#include "math_helper.h"
#include "net_node_common.h"
#include "common/command_line.h"
PUSH_WARNINGS
DISABLE_VS_WARNINGS(4355)
namespace nodetool
{
template<class base_type>
struct p2p_connection_context_t: base_type //t_payload_net_handler::connection_context //public net_utils::connection_context_base
{
p2p_connection_context_t(): peer_id(0), support_flags(0), m_in_timedsync(false) {}
peerid_type peer_id;
uint32_t support_flags;
bool m_in_timedsync;
};
template<class t_payload_net_handler>
class node_server: public epee::levin::levin_commands_handler<p2p_connection_context_t<typename t_payload_net_handler::connection_context> >,
public i_p2p_endpoint<typename t_payload_net_handler::connection_context>,
public epee::net_utils::i_connection_filter
{
struct by_conn_id{};
struct by_peer_id{};
struct by_addr{};
typedef p2p_connection_context_t<typename t_payload_net_handler::connection_context> p2p_connection_context;
typedef COMMAND_HANDSHAKE_T<typename t_payload_net_handler::payload_type> COMMAND_HANDSHAKE;
typedef COMMAND_TIMED_SYNC_T<typename t_payload_net_handler::payload_type> COMMAND_TIMED_SYNC;
public:
typedef t_payload_net_handler payload_net_handler;
node_server(t_payload_net_handler& payload_handler)
:m_payload_handler(payload_handler),
m_current_number_of_out_peers(0),
m_allow_local_ip(false),
m_hide_my_port(false),
m_no_igd(false),
m_offline(false),
m_save_graph(false),
is_closing(false),
m_net_server( epee::net_utils::e_connection_type_P2P ) // this is a P2P connection of the main p2p node server, because this is class node_server<>
{}
virtual ~node_server()
{}
static void init_options(boost::program_options::options_description& desc);
bool run();
bool init(const boost::program_options::variables_map& vm);
bool deinit();
bool send_stop_signal();
uint32_t get_this_peer_port(){return m_listenning_port;}
t_payload_net_handler& get_payload_object();
template <class Archive, class t_version_type>
void serialize(Archive &a, const t_version_type ver)
{
a & m_peerlist;
if (ver == 0)
{
// from v1, we do not store the peer id anymore
peerid_type peer_id = AUTO_VAL_INIT (peer_id);
a & peer_id;
}
}
// debug functions
bool log_peerlist();
bool log_connections();
virtual uint64_t get_connections_count();
size_t get_outgoing_connections_count();
peerlist_manager& get_peerlist_manager(){return m_peerlist;}
void delete_connections(size_t count);
virtual bool block_host(const epee::net_utils::network_address &adress, time_t seconds = P2P_IP_BLOCKTIME);
virtual bool unblock_host(const epee::net_utils::network_address &address);
virtual std::map<std::string, time_t> get_blocked_hosts() { CRITICAL_REGION_LOCAL(m_blocked_hosts_lock); return m_blocked_hosts; }
private:
const std::vector<std::string> m_seed_nodes_list =
{ "seeds.moneroseeds.se"
, "seeds.moneroseeds.ae.org"
, "seeds.moneroseeds.ch"
, "seeds.moneroseeds.li"
};
bool islimitup=false;
bool islimitdown=false;
typedef COMMAND_REQUEST_STAT_INFO_T<typename t_payload_net_handler::stat_info> COMMAND_REQUEST_STAT_INFO;
CHAIN_LEVIN_INVOKE_MAP2(p2p_connection_context); //move levin_commands_handler interface invoke(...) callbacks into invoke map
CHAIN_LEVIN_NOTIFY_MAP2(p2p_connection_context); //move levin_commands_handler interface notify(...) callbacks into nothing
BEGIN_INVOKE_MAP2(node_server)
HANDLE_INVOKE_T2(COMMAND_HANDSHAKE, &node_server::handle_handshake)
HANDLE_INVOKE_T2(COMMAND_TIMED_SYNC, &node_server::handle_timed_sync)
HANDLE_INVOKE_T2(COMMAND_PING, &node_server::handle_ping)
#ifdef ALLOW_DEBUG_COMMANDS
HANDLE_INVOKE_T2(COMMAND_REQUEST_STAT_INFO, &node_server::handle_get_stat_info)
HANDLE_INVOKE_T2(COMMAND_REQUEST_NETWORK_STATE, &node_server::handle_get_network_state)
HANDLE_INVOKE_T2(COMMAND_REQUEST_PEER_ID, &node_server::handle_get_peer_id)
#endif
HANDLE_INVOKE_T2(COMMAND_REQUEST_SUPPORT_FLAGS, &node_server::handle_get_support_flags)
CHAIN_INVOKE_MAP_TO_OBJ_FORCE_CONTEXT(m_payload_handler, typename t_payload_net_handler::connection_context&)
END_INVOKE_MAP2()
enum PeerType { anchor = 0, white, gray };
//----------------- commands handlers ----------------------------------------------
int handle_handshake(int command, typename COMMAND_HANDSHAKE::request& arg, typename COMMAND_HANDSHAKE::response& rsp, p2p_connection_context& context);
int handle_timed_sync(int command, typename COMMAND_TIMED_SYNC::request& arg, typename COMMAND_TIMED_SYNC::response& rsp, p2p_connection_context& context);
int handle_ping(int command, COMMAND_PING::request& arg, COMMAND_PING::response& rsp, p2p_connection_context& context);
#ifdef ALLOW_DEBUG_COMMANDS
int handle_get_stat_info(int command, typename COMMAND_REQUEST_STAT_INFO::request& arg, typename COMMAND_REQUEST_STAT_INFO::response& rsp, p2p_connection_context& context);
int handle_get_network_state(int command, COMMAND_REQUEST_NETWORK_STATE::request& arg, COMMAND_REQUEST_NETWORK_STATE::response& rsp, p2p_connection_context& context);
int handle_get_peer_id(int command, COMMAND_REQUEST_PEER_ID::request& arg, COMMAND_REQUEST_PEER_ID::response& rsp, p2p_connection_context& context);
#endif
int handle_get_support_flags(int command, COMMAND_REQUEST_SUPPORT_FLAGS::request& arg, COMMAND_REQUEST_SUPPORT_FLAGS::response& rsp, p2p_connection_context& context);
bool init_config();
bool make_default_peer_id();
bool make_default_config();
bool store_config();
bool check_trust(const proof_of_trust& tr);
//----------------- levin_commands_handler -------------------------------------------------------------
virtual void on_connection_new(p2p_connection_context& context);
virtual void on_connection_close(p2p_connection_context& context);
virtual void callback(p2p_connection_context& context);
//----------------- i_p2p_endpoint -------------------------------------------------------------
virtual bool relay_notify_to_list(int command, const std::string& data_buff, const std::list<boost::uuids::uuid> &connections);
virtual bool relay_notify_to_all(int command, const std::string& data_buff, const epee::net_utils::connection_context_base& context);
virtual bool invoke_command_to_peer(int command, const std::string& req_buff, std::string& resp_buff, const epee::net_utils::connection_context_base& context);
virtual bool invoke_notify_to_peer(int command, const std::string& req_buff, const epee::net_utils::connection_context_base& context);
virtual bool drop_connection(const epee::net_utils::connection_context_base& context);
virtual void request_callback(const epee::net_utils::connection_context_base& context);
virtual void for_each_connection(std::function<bool(typename t_payload_net_handler::connection_context&, peerid_type, uint32_t)> f);
virtual bool for_connection(const boost::uuids::uuid&, std::function<bool(typename t_payload_net_handler::connection_context&, peerid_type, uint32_t)> f);
virtual bool add_host_fail(const epee::net_utils::network_address &address);
//----------------- i_connection_filter --------------------------------------------------------
virtual bool is_remote_host_allowed(const epee::net_utils::network_address &address);
//-----------------------------------------------------------------------------------------------
bool parse_peer_from_string(epee::net_utils::network_address& pe, const std::string& node_addr, uint16_t default_port = 0);
bool handle_command_line(
const boost::program_options::variables_map& vm
);
bool idle_worker();
bool handle_remote_peerlist(const std::list<peerlist_entry>& peerlist, time_t local_time, const epee::net_utils::connection_context_base& context);
bool get_local_node_data(basic_node_data& node_data);
//bool get_local_handshake_data(handshake_data& hshd);
bool merge_peerlist_with_local(const std::list<peerlist_entry>& bs);
bool fix_time_delta(std::list<peerlist_entry>& local_peerlist, time_t local_time, int64_t& delta);
bool connections_maker();
bool peer_sync_idle_maker();
bool do_handshake_with_peer(peerid_type& pi, p2p_connection_context& context, bool just_take_peerlist = false);
bool do_peer_timed_sync(const epee::net_utils::connection_context_base& context, peerid_type peer_id);
bool make_new_connection_from_anchor_peerlist(const std::vector<anchor_peerlist_entry>& anchor_peerlist);
bool make_new_connection_from_peerlist(bool use_white_list);
bool try_to_connect_and_handshake_with_new_peer(const epee::net_utils::network_address& na, bool just_take_peerlist = false, uint64_t last_seen_stamp = 0, PeerType peer_type = white, uint64_t first_seen_stamp = 0);
size_t get_random_index_with_fixed_probability(size_t max_index);
bool is_peer_used(const peerlist_entry& peer);
bool is_peer_used(const anchor_peerlist_entry& peer);
bool is_addr_connected(const epee::net_utils::network_address& peer);
template<class t_callback>
bool try_ping(basic_node_data& node_data, p2p_connection_context& context, t_callback cb);
bool try_get_support_flags(const p2p_connection_context& context, std::function<void(p2p_connection_context&, const uint32_t&)> f);
bool make_expected_connections_count(PeerType peer_type, size_t expected_connections);
void cache_connect_fail_info(const epee::net_utils::network_address& addr);
bool is_addr_recently_failed(const epee::net_utils::network_address& addr);
bool is_priority_node(const epee::net_utils::network_address& na);
std::set<std::string> get_seed_nodes(bool testnet) const;
bool connect_to_seed();
template <class Container>
bool connect_to_peerlist(const Container& peers);
template <class Container>
bool parse_peers_and_add_to_container(const boost::program_options::variables_map& vm, const command_line::arg_descriptor<std::vector<std::string> > & arg, Container& container);
bool set_max_out_peers(const boost::program_options::variables_map& vm, int64_t max);
bool set_tos_flag(const boost::program_options::variables_map& vm, int limit);
bool set_rate_up_limit(const boost::program_options::variables_map& vm, int64_t limit);
bool set_rate_down_limit(const boost::program_options::variables_map& vm, int64_t limit);
bool set_rate_limit(const boost::program_options::variables_map& vm, int64_t limit);
bool has_too_many_connections(const epee::net_utils::network_address &address);
bool check_connection_and_handshake_with_peer(const epee::net_utils::network_address& na, uint64_t last_seen_stamp);
bool gray_peerlist_housekeeping();
void kill() { ///< will be called e.g. from deinit()
_info("Killing the net_node");
is_closing = true;
if(mPeersLoggerThread != nullptr)
mPeersLoggerThread->join(); // make sure the thread finishes
_info("Joined extra background net_node threads");
}
//debug functions
std::string print_connections_container();
typedef epee::net_utils::boosted_tcp_server<epee::levin::async_protocol_handler<p2p_connection_context> > net_server;
struct config
{
network_config m_net_config;
uint64_t m_peer_id;
uint32_t m_support_flags;
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(m_net_config)
KV_SERIALIZE(m_peer_id)
KV_SERIALIZE(m_support_flags)
END_KV_SERIALIZE_MAP()
};
public:
config m_config; // TODO was private, add getters?
std::atomic<unsigned int> m_current_number_of_out_peers;
void set_save_graph(bool save_graph)
{
m_save_graph = save_graph;
epee::net_utils::connection_basic::set_save_graph(save_graph);
}
private:
std::string m_config_folder;
bool m_have_address;
bool m_first_connection_maker_call;
uint32_t m_listenning_port;
uint32_t m_external_port;
uint32_t m_ip_address;
bool m_allow_local_ip;
bool m_hide_my_port;
bool m_no_igd;
bool m_offline;
std::atomic<bool> m_save_graph;
std::atomic<bool> is_closing;
std::unique_ptr<boost::thread> mPeersLoggerThread;
//critical_section m_connections_lock;
//connections_indexed_container m_connections;
t_payload_net_handler& m_payload_handler;
peerlist_manager m_peerlist;
epee::math_helper::once_a_time_seconds<P2P_DEFAULT_HANDSHAKE_INTERVAL> m_peer_handshake_idle_maker_interval;
epee::math_helper::once_a_time_seconds<1> m_connections_maker_interval;
epee::math_helper::once_a_time_seconds<60*30, false> m_peerlist_store_interval;
epee::math_helper::once_a_time_seconds<60> m_gray_peerlist_housekeeping_interval;
std::string m_bind_ip;
std::string m_port;
#ifdef ALLOW_DEBUG_COMMANDS
uint64_t m_last_stat_request_time;
#endif
std::list<epee::net_utils::network_address> m_priority_peers;
std::vector<epee::net_utils::network_address> m_exclusive_peers;
std::vector<epee::net_utils::network_address> m_seed_nodes;
std::list<nodetool::peerlist_entry> m_command_line_peers;
uint64_t m_peer_livetime;
//keep connections to initiate some interactions
net_server m_net_server;
boost::uuids::uuid m_network_id;
std::map<epee::net_utils::network_address, time_t> m_conn_fails_cache;
epee::critical_section m_conn_fails_cache_lock;
epee::critical_section m_blocked_hosts_lock;
std::map<std::string, time_t> m_blocked_hosts;
epee::critical_section m_host_fails_score_lock;
std::map<std::string, uint64_t> m_host_fails_score;
bool m_testnet;
};
}
#include "net_node.inl"
POP_WARNINGS
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