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net_node.inl
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net_node.inl
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// Copyrights(c) 2017-2021, The Electroneum Project
// Copyrights(c) 2014-2019, 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
// IP blocking adapted from Boolberry
#include <algorithm>
#include <boost/bind/bind.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>
#include <boost/filesystem/operations.hpp>
#include <boost/optional/optional.hpp>
#include <boost/thread/thread.hpp>
#include <boost/uuid/uuid_io.hpp>
#include <atomic>
#include <functional>
#include <limits>
#include <memory>
#include <tuple>
#include <vector>
#include "version.h"
#include "string_tools.h"
#include "common/util.h"
#include "common/dns_utils.h"
#include "common/pruning.h"
#include "net/error.h"
#include "net/net_helper.h"
#include "math_helper.h"
#include "misc_log_ex.h"
#include "p2p_protocol_defs.h"
#include "net/local_ip.h"
#include "crypto/crypto.h"
#include "storages/levin_abstract_invoke2.h"
#include "cryptonote_core/cryptonote_core.h"
#include "net/parse.h"
#include <miniupnp/miniupnpc/miniupnpc.h>
#include <miniupnp/miniupnpc/upnpcommands.h>
#include <miniupnp/miniupnpc/upnperrors.h>
#undef ELECTRONEUM_DEFAULT_LOG_CATEGORY
#define ELECTRONEUM_DEFAULT_LOG_CATEGORY "net.p2p"
#define NET_MAKE_IP(b1,b2,b3,b4) ((LPARAM)(((DWORD)(b1)<<24)+((DWORD)(b2)<<16)+((DWORD)(b3)<<8)+((DWORD)(b4))))
#define MIN_WANTED_SEED_NODES 9 // Because we have 3 servers in each of the 3 regions we use
namespace nodetool
{
template<class t_payload_net_handler>
node_server<t_payload_net_handler>::~node_server()
{
// tcp server uses io_service in destructor, and every zone uses
// io_service from public zone.
for (auto current = m_network_zones.begin(); current != m_network_zones.end(); /* below */)
{
if (current->first != epee::net_utils::zone::public_)
current = m_network_zones.erase(current);
else
++current;
}
}
//-----------------------------------------------------------------------------------
inline bool append_net_address(std::vector<epee::net_utils::network_address> & seed_nodes, std::string const & addr, uint16_t default_port);
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
void node_server<t_payload_net_handler>::init_options(boost::program_options::options_description& desc)
{
command_line::add_arg(desc, arg_p2p_bind_ip);
command_line::add_arg(desc, arg_p2p_bind_port, false);
command_line::add_arg(desc, arg_p2p_external_port);
command_line::add_arg(desc, arg_p2p_allow_local_ip);
command_line::add_arg(desc, arg_p2p_add_peer);
command_line::add_arg(desc, arg_p2p_add_priority_node);
command_line::add_arg(desc, arg_p2p_add_exclusive_node);
command_line::add_arg(desc, arg_p2p_seed_node);
command_line::add_arg(desc, arg_proxy);
command_line::add_arg(desc, arg_anonymous_inbound);
command_line::add_arg(desc, arg_p2p_hide_my_port);
command_line::add_arg(desc, arg_no_sync);
command_line::add_arg(desc, arg_no_igd);
command_line::add_arg(desc, arg_out_peers);
command_line::add_arg(desc, arg_in_peers);
command_line::add_arg(desc, arg_tos_flag);
command_line::add_arg(desc, arg_limit_rate_up);
command_line::add_arg(desc, arg_limit_rate_down);
command_line::add_arg(desc, arg_limit_rate);
command_line::add_arg(desc, arg_save_graph);
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::init_config()
{
TRY_ENTRY();
auto storage = peerlist_storage::open(m_config_folder + "/" + P2P_NET_DATA_FILENAME);
if (storage)
m_peerlist_storage = std::move(*storage);
m_network_zones[epee::net_utils::zone::public_].m_config.m_support_flags = P2P_SUPPORT_FLAGS;
m_first_connection_maker_call = true;
CATCH_ENTRY_L0("node_server::init_config", false);
return true;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
void node_server<t_payload_net_handler>::for_each_connection(std::function<bool(typename t_payload_net_handler::connection_context&, peerid_type, uint32_t)> f)
{
for(auto& zone : m_network_zones)
{
zone.second.m_net_server.get_config_object().foreach_connection([&](p2p_connection_context& cntx){
return f(cntx, cntx.peer_id, cntx.support_flags);
});
}
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::for_connection(const boost::uuids::uuid &connection_id, std::function<bool(typename t_payload_net_handler::connection_context&, peerid_type, uint32_t)> f)
{
for(auto& zone : m_network_zones)
{
const bool result = zone.second.m_net_server.get_config_object().for_connection(connection_id, [&](p2p_connection_context& cntx){
return f(cntx, cntx.peer_id, cntx.support_flags);
});
if (result)
return true;
}
return false;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::is_remote_host_allowed(const epee::net_utils::network_address &address)
{
CRITICAL_REGION_LOCAL(m_blocked_hosts_lock);
auto it = m_blocked_hosts.find(address.host_str());
if(it == m_blocked_hosts.end())
return true;
if(time(nullptr) >= it->second)
{
m_blocked_hosts.erase(it);
MCLOG_CYAN(el::Level::Info, "global", "Host " << address.host_str() << " unblocked.");
return true;
}
return false;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::block_host(const epee::net_utils::network_address &addr, time_t seconds)
{
if(!addr.is_blockable())
return false;
const time_t now = time(nullptr);
CRITICAL_REGION_LOCAL(m_blocked_hosts_lock);
time_t limit;
if (now > std::numeric_limits<time_t>::max() - seconds)
limit = std::numeric_limits<time_t>::max();
else
limit = now + seconds;
m_blocked_hosts[addr.host_str()] = limit;
// drop any connection to that address. This should only have to look into
// the zone related to the connection, but really make sure everything is
// swept ...
std::vector<boost::uuids::uuid> conns;
for(auto& zone : m_network_zones)
{
zone.second.m_net_server.get_config_object().foreach_connection([&](const p2p_connection_context& cntxt)
{
if (cntxt.m_remote_address.is_same_host(addr))
{
conns.push_back(cntxt.m_connection_id);
}
return true;
});
for (const auto &c: conns)
zone.second.m_net_server.get_config_object().close(c);
conns.clear();
}
MCLOG_CYAN(el::Level::Info, "global", "Host " << addr.host_str() << " blocked.");
return true;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::unblock_host(const epee::net_utils::network_address &address)
{
CRITICAL_REGION_LOCAL(m_blocked_hosts_lock);
auto i = m_blocked_hosts.find(address.host_str());
if (i == m_blocked_hosts.end())
return false;
m_blocked_hosts.erase(i);
MCLOG_CYAN(el::Level::Info, "global", "Host " << address.host_str() << " unblocked.");
return true;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::add_host_fail(const epee::net_utils::network_address &address)
{
if(!address.is_blockable())
return false;
CRITICAL_REGION_LOCAL(m_host_fails_score_lock);
uint64_t fails = ++m_host_fails_score[address.host_str()];
MDEBUG("Host " << address.host_str() << " fail score=" << fails);
if(fails > P2P_IP_FAILS_BEFORE_BLOCK)
{
auto it = m_host_fails_score.find(address.host_str());
CHECK_AND_ASSERT_MES(it != m_host_fails_score.end(), false, "internal error");
it->second = P2P_IP_FAILS_BEFORE_BLOCK/2;
block_host(address);
}
return true;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::handle_command_line(
const boost::program_options::variables_map& vm
)
{
bool testnet = command_line::get_arg(vm, cryptonote::arg_testnet_on);
bool stagenet = command_line::get_arg(vm, cryptonote::arg_stagenet_on);
m_nettype = testnet ? cryptonote::TESTNET : stagenet ? cryptonote::STAGENET : cryptonote::MAINNET;
network_zone& public_zone = m_network_zones[epee::net_utils::zone::public_];
public_zone.m_connect = &public_connect;
public_zone.m_bind_ip = command_line::get_arg(vm, arg_p2p_bind_ip);
public_zone.m_port = command_line::get_arg(vm, arg_p2p_bind_port);
public_zone.m_can_pingback = true;
m_external_port = command_line::get_arg(vm, arg_p2p_external_port);
m_allow_local_ip = command_line::get_arg(vm, arg_p2p_allow_local_ip);
m_no_igd = command_line::get_arg(vm, arg_no_igd);
m_offline = command_line::get_arg(vm, cryptonote::arg_offline);
if (command_line::has_arg(vm, arg_p2p_add_peer))
{
std::vector<std::string> perrs = command_line::get_arg(vm, arg_p2p_add_peer);
for(const std::string& pr_str: perrs)
{
nodetool::peerlist_entry pe = AUTO_VAL_INIT(pe);
pe.id = crypto::rand<uint64_t>();
const uint16_t default_port = cryptonote::get_config(m_nettype).P2P_DEFAULT_PORT;
expect<epee::net_utils::network_address> adr = net::get_network_address(pr_str, default_port);
if (adr)
{
add_zone(adr->get_zone());
pe.adr = std::move(*adr);
m_command_line_peers.push_back(std::move(pe));
continue;
}
CHECK_AND_ASSERT_MES(
adr == net::error::unsupported_address, false, "Bad address (\"" << pr_str << "\"): " << adr.error().message()
);
std::vector<epee::net_utils::network_address> resolved_addrs;
bool r = append_net_address(resolved_addrs, pr_str, default_port);
CHECK_AND_ASSERT_MES(r, false, "Failed to parse or resolve address from string: " << pr_str);
for (const epee::net_utils::network_address& addr : resolved_addrs)
{
pe.id = crypto::rand<uint64_t>();
pe.adr = addr;
m_command_line_peers.push_back(pe);
}
}
}
if(command_line::has_arg(vm, arg_save_graph))
{
set_save_graph(true);
}
if (command_line::has_arg(vm,arg_p2p_add_exclusive_node))
{
if (!parse_peers_and_add_to_container(vm, arg_p2p_add_exclusive_node, m_exclusive_peers))
return false;
}
if (command_line::has_arg(vm, arg_p2p_add_priority_node))
{
if (!parse_peers_and_add_to_container(vm, arg_p2p_add_priority_node, m_priority_peers))
return false;
}
if (command_line::has_arg(vm, arg_p2p_seed_node))
{
if (!parse_peers_and_add_to_container(vm, arg_p2p_seed_node, m_seed_nodes))
return false;
}
if(command_line::has_arg(vm, arg_p2p_hide_my_port))
m_hide_my_port = true;
if (command_line::has_arg(vm, arg_no_sync))
m_payload_handler.set_no_sync(true);
if ( !set_max_out_peers(public_zone, command_line::get_arg(vm, arg_out_peers) ) )
return false;
else
m_payload_handler.set_max_out_peers(public_zone.m_config.m_net_config.max_out_connection_count);
if ( !set_max_in_peers(public_zone, command_line::get_arg(vm, arg_in_peers) ) )
return false;
if ( !set_tos_flag(vm, command_line::get_arg(vm, arg_tos_flag) ) )
return false;
if ( !set_rate_up_limit(vm, command_line::get_arg(vm, arg_limit_rate_up) ) )
return false;
if ( !set_rate_down_limit(vm, command_line::get_arg(vm, arg_limit_rate_down) ) )
return false;
if ( !set_rate_limit(vm, command_line::get_arg(vm, arg_limit_rate) ) )
return false;
auto proxies = get_proxies(vm);
if (!proxies)
return false;
for (auto& proxy : *proxies)
{
network_zone& zone = add_zone(proxy.zone);
if (zone.m_connect != nullptr)
{
MERROR("Listed --" << arg_proxy.name << " twice with " << epee::net_utils::zone_to_string(proxy.zone));
return false;
}
zone.m_connect = &socks_connect;
zone.m_proxy_address = std::move(proxy.address);
if (!set_max_out_peers(zone, proxy.max_connections))
return false;
}
for (const auto& zone : m_network_zones)
{
if (zone.second.m_connect == nullptr)
{
MERROR("Set outgoing peer for " << epee::net_utils::zone_to_string(zone.first) << " but did not set --" << arg_proxy.name);
return false;
}
}
auto inbounds = get_anonymous_inbounds(vm);
if (!inbounds)
return false;
for (auto& inbound : *inbounds)
{
network_zone& zone = add_zone(inbound.our_address.get_zone());
if (!zone.m_bind_ip.empty())
{
MERROR("Listed --" << arg_anonymous_inbound.name << " twice with " << epee::net_utils::zone_to_string(inbound.our_address.get_zone()) << " network");
return false;
}
zone.m_bind_ip = std::move(inbound.local_ip);
zone.m_port = std::move(inbound.local_port);
zone.m_net_server.set_default_remote(std::move(inbound.default_remote));
zone.m_our_address = std::move(inbound.our_address);
if (!set_max_in_peers(zone, inbound.max_connections))
return false;
}
return true;
}
//-----------------------------------------------------------------------------------
inline bool append_net_address(
std::vector<epee::net_utils::network_address> & seed_nodes
, std::string const & addr
, uint16_t default_port
)
{
using namespace boost::asio;
std::string host = addr;
std::string port = std::to_string(default_port);
size_t pos = addr.find_last_of(':');
if (std::string::npos != pos)
{
CHECK_AND_ASSERT_MES(addr.length() - 1 != pos && 0 != pos, false, "Failed to parse seed address from string: '" << addr << '\'');
host = addr.substr(0, pos);
port = addr.substr(pos + 1);
}
MINFO("Resolving node address: host=" << host << ", port=" << port);
io_service io_srv;
ip::tcp::resolver resolver(io_srv);
ip::tcp::resolver::query query(host, port, boost::asio::ip::tcp::resolver::query::canonical_name);
boost::system::error_code ec;
ip::tcp::resolver::iterator i = resolver.resolve(query, ec);
CHECK_AND_ASSERT_MES(!ec, false, "Failed to resolve host name '" << host << "': " << ec.message() << ':' << ec.value());
ip::tcp::resolver::iterator iend;
for (; i != iend; ++i)
{
ip::tcp::endpoint endpoint = *i;
if (endpoint.address().is_v4())
{
epee::net_utils::network_address na{epee::net_utils::ipv4_network_address{boost::asio::detail::socket_ops::host_to_network_long(endpoint.address().to_v4().to_ulong()), endpoint.port()}};
seed_nodes.push_back(na);
MINFO("Added node: " << na.str());
}
else
{
MWARNING("IPv6 unsupported, skip '" << host << "' -> " << endpoint.address().to_v6().to_string(ec));
}
}
return true;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
std::set<std::string> node_server<t_payload_net_handler>::get_seed_nodes(cryptonote::network_type nettype) const
{
std::set<std::string> full_addrs;
if (nettype == cryptonote::TESTNET)
{
// Add testnet nodes here
full_addrs.insert("54.146.49.178:34567");
full_addrs.insert("13.228.250.11:34567");
}
else if (nettype == cryptonote::STAGENET)
{
full_addrs.insert("162.210.173.150:38080");
full_addrs.insert("162.210.173.151:38080");
}
else if (nettype == cryptonote::FAKECHAIN)
{
}
else
{
full_addrs.insert("13.213.117.221:26967");
full_addrs.insert("18.215.114.241:26967");
}
return full_addrs;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
typename node_server<t_payload_net_handler>::network_zone& node_server<t_payload_net_handler>::add_zone(const epee::net_utils::zone zone)
{
const auto zone_ = m_network_zones.lower_bound(zone);
if (zone_ != m_network_zones.end() && zone_->first == zone)
return zone_->second;
network_zone& public_zone = m_network_zones[epee::net_utils::zone::public_];
return m_network_zones.emplace_hint(zone_, std::piecewise_construct, std::make_tuple(zone), std::tie(public_zone.m_net_server.get_io_service()))->second;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::init(const boost::program_options::variables_map& vm)
{
std::set<std::string> full_addrs;
bool res = handle_command_line(vm);
CHECK_AND_ASSERT_MES(res, false, "Failed to handle command line");
m_fallback_seed_nodes_added = false;
if (m_nettype == cryptonote::TESTNET)
{
memcpy(&m_network_id, &::config::testnet::NETWORK_ID, 16);
full_addrs = get_seed_nodes(cryptonote::TESTNET);
}
else if (m_nettype == cryptonote::STAGENET)
{
memcpy(&m_network_id, &::config::stagenet::NETWORK_ID, 16);
full_addrs = get_seed_nodes(cryptonote::STAGENET);
}
else
{
memcpy(&m_network_id, &::config::NETWORK_ID, 16);
if (m_exclusive_peers.empty() && !m_offline)
{
// for each hostname in the seed nodes list, attempt to DNS resolve and
// add the result addresses as seed nodes
// TODO: at some point add IPv6 support, but that won't be relevant
// for some time yet.
std::vector<std::vector<std::string>> dns_results;
dns_results.resize(m_seed_nodes_list.size());
boost::thread::attributes thread_attributes;
thread_attributes.set_stack_size(1024*1024);
std::list<boost::thread> dns_threads;
uint64_t result_index = 0;
for (const std::string& addr_str : m_seed_nodes_list)
{
boost::thread th = boost::thread(thread_attributes, [=, &dns_results, &addr_str]
{
MDEBUG("dns_threads[" << result_index << "] created for: " << addr_str);
// TODO: care about dnssec avail/valid
bool avail, valid;
std::vector<std::string> addr_list;
try
{
addr_list = tools::DNSResolver::instance().get_ipv4(addr_str, avail, valid);
MDEBUG("dns_threads[" << result_index << "] DNS resolve done");
boost::this_thread::interruption_point();
}
catch(const boost::thread_interrupted&)
{
// thread interruption request
// even if we now have results, finish thread without setting
// result variables, which are now out of scope in main thread
MWARNING("dns_threads[" << result_index << "] interrupted");
return;
}
MINFO("dns_threads[" << result_index << "] addr_str: " << addr_str << " number of results: " << addr_list.size());
dns_results[result_index] = addr_list;
});
dns_threads.push_back(std::move(th));
++result_index;
}
MDEBUG("dns_threads created, now waiting for completion or timeout of " << CRYPTONOTE_DNS_TIMEOUT_MS << "ms");
boost::chrono::system_clock::time_point deadline = boost::chrono::system_clock::now() + boost::chrono::milliseconds(CRYPTONOTE_DNS_TIMEOUT_MS);
uint64_t i = 0;
for (boost::thread& th : dns_threads)
{
if (! th.try_join_until(deadline))
{
MWARNING("dns_threads[" << i << "] timed out, sending interrupt");
th.interrupt();
}
++i;
}
i = 0;
for (const auto& result : dns_results)
{
MDEBUG("DNS lookup for " << m_seed_nodes_list[i] << ": " << result.size() << " results");
// if no results for node, thread's lookup likely timed out
if (result.size())
{
const uint16_t default_port = m_nettype == cryptonote::TESTNET ? ::config::testnet::P2P_DEFAULT_PORT : ::config::P2P_DEFAULT_PORT; // Get the correct port for the seed nodes
for (const auto& addr_string : result)
full_addrs.insert(addr_string + ":" + std::to_string(cryptonote::get_config(m_nettype).P2P_DEFAULT_PORT));
}
++i;
}
// append the fallback nodes if we have too few seed nodes to start with
if (full_addrs.size() < MIN_WANTED_SEED_NODES)
{
if (full_addrs.empty())
MINFO("DNS seed node lookup either timed out or failed, falling back to defaults");
else
MINFO("Not enough DNS seed nodes found, using fallback defaults too");
for (const auto &peer: get_seed_nodes(cryptonote::MAINNET))
full_addrs.insert(peer);
m_fallback_seed_nodes_added = true;
}
}
}
for (const auto& full_addr : full_addrs)
{
MDEBUG("Seed node: " << full_addr);
append_net_address(m_seed_nodes, full_addr, cryptonote::get_config(m_nettype).P2P_DEFAULT_PORT);
}
MDEBUG("Number of seed nodes: " << m_seed_nodes.size());
m_config_folder = command_line::get_arg(vm, cryptonote::arg_data_dir);
network_zone& public_zone = m_network_zones.at(epee::net_utils::zone::public_);
if ((m_nettype == cryptonote::MAINNET && public_zone.m_port != std::to_string(::config::P2P_DEFAULT_PORT))
|| (m_nettype == cryptonote::TESTNET && public_zone.m_port != std::to_string(::config::testnet::P2P_DEFAULT_PORT))
|| (m_nettype == cryptonote::STAGENET && public_zone.m_port != std::to_string(::config::stagenet::P2P_DEFAULT_PORT))) {
m_config_folder = m_config_folder + "/" + public_zone.m_port;
}
res = init_config();
CHECK_AND_ASSERT_MES(res, false, "Failed to init config.");
for (auto& zone : m_network_zones)
{
res = zone.second.m_peerlist.init(m_peerlist_storage.take_zone(zone.first), m_allow_local_ip);
CHECK_AND_ASSERT_MES(res, false, "Failed to init peerlist.");
}
for(const auto& p: m_command_line_peers)
m_network_zones.at(p.adr.get_zone()).m_peerlist.append_with_peer_white(p);
// all peers are now setup
#ifdef CRYPTONOTE_PRUNING_DEBUG_SPOOF_SEED
for (auto& zone : m_network_zones)
{
std::list<peerlist_entry> plw;
while (zone.second.m_peerlist.get_white_peers_count())
{
plw.push_back(peerlist_entry());
zone.second.m_peerlist.get_white_peer_by_index(plw.back(), 0);
zone.second.m_peerlist.remove_from_peer_white(plw.back());
}
for (auto &e:plw)
zone.second.m_peerlist.append_with_peer_white(e);
std::list<peerlist_entry> plg;
while (zone.second.m_peerlist.get_gray_peers_count())
{
plg.push_back(peerlist_entry());
zone.second.m_peerlist.get_gray_peer_by_index(plg.back(), 0);
zone.second.m_peerlist.remove_from_peer_gray(plg.back());
}
for (auto &e:plg)
zone.second.m_peerlist.append_with_peer_gray(e);
}
#endif
//only in case if we really sure that we have external visible ip
m_have_address = true;
m_last_stat_request_time = 0;
//configure self
public_zone.m_net_server.set_threads_prefix("P2P"); // all zones use these threads/asio::io_service
// from here onwards, it's online stuff
if (m_offline)
return res;
//try to bind
m_ssl_support = epee::net_utils::ssl_support_t::e_ssl_support_disabled;
for (auto& zone : m_network_zones)
{
zone.second.m_net_server.get_config_object().set_handler(this);
zone.second.m_net_server.get_config_object().m_invoke_timeout = P2P_DEFAULT_INVOKE_TIMEOUT;
if (!zone.second.m_bind_ip.empty())
{
zone.second.m_net_server.set_connection_filter(this);
MINFO("Binding on " << zone.second.m_bind_ip << ":" << zone.second.m_port);
res = zone.second.m_net_server.init_server(zone.second.m_port, zone.second.m_bind_ip, epee::net_utils::ssl_support_t::e_ssl_support_disabled);
CHECK_AND_ASSERT_MES(res, false, "Failed to bind server");
}
}
m_listening_port = public_zone.m_net_server.get_binded_port();
MLOG_GREEN(el::Level::Info, "Net service bound to " << public_zone.m_bind_ip << ":" << m_listening_port);
if(m_external_port)
MDEBUG("External port defined as " << m_external_port);
// add UPnP port mapping
if(!m_no_igd)
add_upnp_port_mapping(m_listening_port);
return res;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
typename node_server<t_payload_net_handler>::payload_net_handler& node_server<t_payload_net_handler>::get_payload_object()
{
return m_payload_handler;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::run()
{
// creating thread to log number of connections
mPeersLoggerThread.reset(new boost::thread([&]()
{
_note("Thread monitor number of peers - start");
const network_zone& public_zone = m_network_zones.at(epee::net_utils::zone::public_);
while (!is_closing && !public_zone.m_net_server.is_stop_signal_sent())
{ // main loop of thread
//number_of_peers = m_net_server.get_config_object().get_connections_count();
for (auto& zone : m_network_zones)
{
unsigned int number_of_in_peers = 0;
unsigned int number_of_out_peers = 0;
zone.second.m_net_server.get_config_object().foreach_connection([&](const p2p_connection_context& cntxt)
{
if (cntxt.m_is_income)
{
++number_of_in_peers;
}
else
{
++number_of_out_peers;
}
return true;
}); // lambda
zone.second.m_current_number_of_in_peers = number_of_in_peers;
zone.second.m_current_number_of_out_peers = number_of_out_peers;
}
boost::this_thread::sleep_for(boost::chrono::seconds(1));
} // main loop of thread
_note("Thread monitor number of peers - done");
})); // lambda
network_zone& public_zone = m_network_zones.at(epee::net_utils::zone::public_);
public_zone.m_net_server.add_idle_handler(boost::bind(&node_server<t_payload_net_handler>::idle_worker, this), 1000);
public_zone.m_net_server.add_idle_handler(boost::bind(&t_payload_net_handler::on_idle, &m_payload_handler), 1000);
//here you can set worker threads count
int thrds_count = 10;
boost::thread::attributes attrs;
attrs.set_stack_size(THREAD_STACK_SIZE);
//go to loop
MINFO("Run net_service loop( " << thrds_count << " threads)...");
if(!public_zone.m_net_server.run_server(thrds_count, true, attrs))
{
LOG_ERROR("Failed to run net tcp server!");
}
MINFO("net_service loop stopped.");
return true;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
uint64_t node_server<t_payload_net_handler>::get_public_connections_count()
{
auto public_zone = m_network_zones.find(epee::net_utils::zone::public_);
if (public_zone == m_network_zones.end())
return 0;
return public_zone->second.m_net_server.get_config_object().get_connections_count();
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
uint64_t node_server<t_payload_net_handler>::get_connections_count()
{
std::uint64_t count = 0;
for (auto& zone : m_network_zones)
count += zone.second.m_net_server.get_config_object().get_connections_count();
return count;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::deinit()
{
kill();
if (!m_offline)
{
for(auto& zone : m_network_zones)
zone.second.m_net_server.deinit_server();
// remove UPnP port mapping
if(!m_no_igd)
delete_upnp_port_mapping(m_listening_port);
}
return store_config();
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::store_config()
{
TRY_ENTRY();
if (!tools::create_directories_if_necessary(m_config_folder))
{
MWARNING("Failed to create data directory \"" << m_config_folder);
return false;
}
peerlist_types active{};
for (auto& zone : m_network_zones)
zone.second.m_peerlist.get_peerlist(active);
const std::string state_file_path = m_config_folder + "/" + P2P_NET_DATA_FILENAME;
if (!m_peerlist_storage.store(state_file_path, active))
{
MWARNING("Failed to save config to file " << state_file_path);
return false;
}
CATCH_ENTRY_L0("node_server::store", false);
return true;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::send_stop_signal()
{
MDEBUG("[node] sending stop signal");
for (auto& zone : m_network_zones)
zone.second.m_net_server.send_stop_signal();
MDEBUG("[node] Stop signal sent");
for (auto& zone : m_network_zones)
{
std::list<boost::uuids::uuid> connection_ids;
zone.second.m_net_server.get_config_object().foreach_connection([&](const p2p_connection_context& cntxt) {
connection_ids.push_back(cntxt.m_connection_id);
return true;
});
for (const auto &connection_id: connection_ids)
zone.second.m_net_server.get_config_object().close(connection_id);
}
m_payload_handler.stop();
return true;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::do_handshake_with_peer(peerid_type& pi, p2p_connection_context& context_, bool just_take_peerlist)
{
network_zone& zone = m_network_zones.at(context_.m_remote_address.get_zone());
typename COMMAND_HANDSHAKE::request arg;
typename COMMAND_HANDSHAKE::response rsp;
get_local_node_data(arg.node_data, zone);
m_payload_handler.get_payload_sync_data(arg.payload_data);
epee::simple_event ev;
std::atomic<bool> hsh_result(false);
bool r = epee::net_utils::async_invoke_remote_command2<typename COMMAND_HANDSHAKE::response>(context_.m_connection_id, COMMAND_HANDSHAKE::ID, arg, zone.m_net_server.get_config_object(),
[this, &pi, &ev, &hsh_result, &just_take_peerlist, &context_](int code, const typename COMMAND_HANDSHAKE::response& rsp, p2p_connection_context& context)
{
epee::misc_utils::auto_scope_leave_caller scope_exit_handler = epee::misc_utils::create_scope_leave_handler([&](){ev.raise();});
if(code < 0)
{
LOG_WARNING_CC(context, "COMMAND_HANDSHAKE invoke failed. (" << code << ", " << epee::levin::get_err_descr(code) << ")");
return;
}
if(rsp.node_data.network_id != m_network_id)
{
LOG_WARNING_CC(context, "COMMAND_HANDSHAKE Failed, wrong network! (" << rsp.node_data.network_id << "), closing connection.");
return;
}
if(!handle_remote_peerlist(rsp.local_peerlist_new, rsp.node_data.local_time, context))
{
LOG_WARNING_CC(context, "COMMAND_HANDSHAKE: failed to handle_remote_peerlist(...), closing connection.");
add_host_fail(context.m_remote_address);
return;
}
hsh_result = true;
if(!just_take_peerlist)
{
if(!m_payload_handler.process_payload_sync_data(rsp.payload_data, context, true))
{
LOG_WARNING_CC(context, "COMMAND_HANDSHAKE invoked, but process_payload_sync_data returned false, dropping connection.");
hsh_result = false;
return;
}
pi = context.peer_id = rsp.node_data.peer_id;
context.m_rpc_port = rsp.node_data.rpc_port;
m_network_zones.at(context.m_remote_address.get_zone()).m_peerlist.set_peer_just_seen(rsp.node_data.peer_id, context.m_remote_address, context.m_pruning_seed, context.m_rpc_port);
// move
for (auto const& zone : m_network_zones)
{
if(rsp.node_data.peer_id == zone.second.m_config.m_peer_id)
{
LOG_DEBUG_CC(context, "Connection to self detected, dropping connection");
hsh_result = false;
return;
}
}
LOG_INFO_CC(context, "New connection handshaked, pruning seed " << epee::string_tools::to_string_hex(context.m_pruning_seed));
LOG_DEBUG_CC(context, " COMMAND_HANDSHAKE INVOKED OK");
}else
{
LOG_DEBUG_CC(context, " COMMAND_HANDSHAKE(AND CLOSE) INVOKED OK");
}
context_ = context;
}, P2P_DEFAULT_HANDSHAKE_INVOKE_TIMEOUT);
if(r)
{
ev.wait();
}
if(!hsh_result)
{
LOG_WARNING_CC(context_, "COMMAND_HANDSHAKE Failed");
m_network_zones.at(context_.m_remote_address.get_zone()).m_net_server.get_config_object().close(context_.m_connection_id);
}
else
{
try_get_support_flags(context_, [](p2p_connection_context& flags_context, const uint32_t& support_flags)
{
flags_context.support_flags = support_flags;
});
}
return hsh_result;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::do_peer_timed_sync(const epee::net_utils::connection_context_base& context_, peerid_type peer_id)
{
typename COMMAND_TIMED_SYNC::request arg = AUTO_VAL_INIT(arg);
m_payload_handler.get_payload_sync_data(arg.payload_data);
network_zone& zone = m_network_zones.at(context_.m_remote_address.get_zone());
bool r = epee::net_utils::async_invoke_remote_command2<typename COMMAND_TIMED_SYNC::response>(context_.m_connection_id, COMMAND_TIMED_SYNC::ID, arg, zone.m_net_server.get_config_object(),
[this](int code, const typename COMMAND_TIMED_SYNC::response& rsp, p2p_connection_context& context)
{
context.m_in_timedsync = false;
if(code < 0)
{
LOG_WARNING_CC(context, "COMMAND_TIMED_SYNC invoke failed. (" << code << ", " << epee::levin::get_err_descr(code) << ")");
return;
}
if(!handle_remote_peerlist(rsp.local_peerlist_new, rsp.local_time, context))
{
LOG_WARNING_CC(context, "COMMAND_TIMED_SYNC: failed to handle_remote_peerlist(...), closing connection.");
m_network_zones.at(context.m_remote_address.get_zone()).m_net_server.get_config_object().close(context.m_connection_id );
add_host_fail(context.m_remote_address);
}
if(!context.m_is_income)
m_network_zones.at(context.m_remote_address.get_zone()).m_peerlist.set_peer_just_seen(context.peer_id, context.m_remote_address, context.m_pruning_seed, context.m_rpc_port);
if (!m_payload_handler.process_payload_sync_data(rsp.payload_data, context, false))
{
m_network_zones.at(context.m_remote_address.get_zone()).m_net_server.get_config_object().close(context.m_connection_id );
}
});
if(!r)
{
LOG_WARNING_CC(context_, "COMMAND_TIMED_SYNC Failed");
return false;
}
return true;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
size_t node_server<t_payload_net_handler>::get_random_index_with_fixed_probability(size_t max_index)
{
//divide by zero workaround
if(!max_index)
return 0;
size_t x = crypto::rand<size_t>()%(max_index+1);
size_t res = (x*x*x)/(max_index*max_index); //parabola \/
MDEBUG("Random connection index=" << res << "(x="<< x << ", max_index=" << max_index << ")");
return res;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::is_peer_used(const peerlist_entry& peer)
{
for(const auto& zone : m_network_zones)
if(zone.second.m_config.m_peer_id == peer.id)
return true;//dont make connections to ourself
bool used = false;
for(auto& zone : m_network_zones)
{
zone.second.m_net_server.get_config_object().foreach_connection([&](const p2p_connection_context& cntxt)
{
if(cntxt.peer_id == peer.id || (!cntxt.m_is_income && peer.adr == cntxt.m_remote_address))
{
used = true;
return false;//stop enumerating
}
return true;
});
if(used)
return true;
}
return false;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::is_peer_used(const anchor_peerlist_entry& peer)
{