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net_node.inl
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net_node.inl
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// Copyright (c) 2014-2022, 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 <boost/algorithm/string.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 "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 MONERO_DEFAULT_LOG_CATEGORY
#define MONERO_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 12
static inline boost::asio::ip::address_v4 make_address_v4_from_v6(const boost::asio::ip::address_v6& a)
{
const auto &bytes = a.to_bytes();
uint32_t v4 = 0;
v4 = (v4 << 8) | bytes[12];
v4 = (v4 << 8) | bytes[13];
v4 = (v4 << 8) | bytes[14];
v4 = (v4 << 8) | bytes[15];
return boost::asio::ip::address_v4(v4);
}
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_ipv6_address);
command_line::add_arg(desc, arg_p2p_bind_port, false);
command_line::add_arg(desc, arg_p2p_bind_port_ipv6, false);
command_line::add_arg(desc, arg_p2p_use_ipv6);
command_line::add_arg(desc, arg_p2p_ignore_ipv4);
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_tx_proxy);
command_line::add_arg(desc, arg_anonymous_inbound);
command_line::add_arg(desc, arg_ban_list);
command_line::add_arg(desc, arg_p2p_hide_my_port);
command_line::add_arg(desc, arg_no_sync);
command_line::add_arg(desc, arg_enable_dns_blocklist);
command_line::add_arg(desc, arg_no_igd);
command_line::add_arg(desc, arg_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_pad_transactions);
command_line::add_arg(desc, arg_max_connections_per_ip);
}
//-----------------------------------------------------------------------------------
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);
network_zone& public_zone = m_network_zones[epee::net_utils::zone::public_];
public_zone.m_config.m_support_flags = P2P_SUPPORT_FLAGS;
public_zone.m_config.m_peer_id = crypto::rand<uint64_t>();
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, time_t *t)
{
CRITICAL_REGION_LOCAL(m_blocked_hosts_lock);
const time_t now = time(nullptr);
// look in the hosts list
auto it = m_blocked_hosts.find(address.host_str());
if (it != m_blocked_hosts.end())
{
if (now >= it->second)
{
m_blocked_hosts.erase(it);
MCLOG_CYAN(el::Level::Info, "global", "Host " << address.host_str() << " unblocked.");
it = m_blocked_hosts.end();
}
else
{
if (t)
*t = it->second - now;
return false;
}
}
// manually loop in subnets
if (address.get_type_id() == epee::net_utils::address_type::ipv4)
{
auto ipv4_address = address.template as<epee::net_utils::ipv4_network_address>();
std::map<epee::net_utils::ipv4_network_subnet, time_t>::iterator it;
for (it = m_blocked_subnets.begin(); it != m_blocked_subnets.end(); )
{
if (now >= it->second)
{
it = m_blocked_subnets.erase(it);
MCLOG_CYAN(el::Level::Info, "global", "Subnet " << it->first.host_str() << " unblocked.");
continue;
}
if (it->first.matches(ipv4_address))
{
if (t)
*t = it->second - now;
return false;
}
++it;
}
}
// not found in hosts or subnets, allowed
return true;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::block_host(epee::net_utils::network_address addr, time_t seconds, bool add_only)
{
if(!addr.is_blockable())
return false;
const time_t now = time(nullptr);
bool added = false;
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;
const std::string host_str = addr.host_str();
auto it = m_blocked_hosts.find(host_str);
if (it == m_blocked_hosts.end())
{
m_blocked_hosts[host_str] = limit;
added = true;
}
else if (it->second < limit || !add_only)
it->second = 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;
});
peerlist_entry pe{};
pe.adr = addr;
if (addr.port() == 0)
{
zone.second.m_peerlist.evict_host_from_peerlist(true, pe);
zone.second.m_peerlist.evict_host_from_peerlist(false, pe);
}
else
{
zone.second.m_peerlist.remove_from_peer_white(pe);
zone.second.m_peerlist.remove_from_peer_gray(pe);
zone.second.m_peerlist.remove_from_peer_anchor(addr);
}
for (const auto &c: conns)
zone.second.m_net_server.get_config_object().close(c);
conns.clear();
}
if (added)
MCLOG_CYAN(el::Level::Info, "global", "Host " << host_str << " blocked.");
else
MINFO("Host " << host_str << " block time updated.");
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>::block_subnet(const epee::net_utils::ipv4_network_subnet &subnet, time_t seconds)
{
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_subnets[subnet] = limit;
// drop any connection to that subnet. 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.get_type_id() != epee::net_utils::ipv4_network_address::get_type_id())
return true;
auto ipv4_address = cntxt.m_remote_address.template as<epee::net_utils::ipv4_network_address>();
if (subnet.matches(ipv4_address))
{
conns.push_back(cntxt.m_connection_id);
}
return true;
});
for (const auto &c: conns)
zone.second.m_net_server.get_config_object().close(c);
for (int i = 0; i < 2; ++i)
zone.second.m_peerlist.filter(i == 0, [&subnet](const peerlist_entry &pe){
if (pe.adr.get_type_id() != epee::net_utils::ipv4_network_address::get_type_id())
return false;
return subnet.matches(pe.adr.as<const epee::net_utils::ipv4_network_address>());
});
conns.clear();
}
MCLOG_CYAN(el::Level::Info, "global", "Subnet " << subnet.host_str() << " blocked.");
return true;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::unblock_subnet(const epee::net_utils::ipv4_network_subnet &subnet)
{
CRITICAL_REGION_LOCAL(m_blocked_hosts_lock);
auto i = m_blocked_subnets.find(subnet);
if (i == m_blocked_subnets.end())
return false;
m_blocked_subnets.erase(i);
MCLOG_CYAN(el::Level::Info, "global", "Subnet " << subnet.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, unsigned int score)
{
if(!address.is_blockable())
return false;
CRITICAL_REGION_LOCAL(m_host_fails_score_lock);
uint64_t fails = m_host_fails_score[address.host_str()] += score;
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);
const bool pad_txs = command_line::get_arg(vm, arg_pad_transactions);
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_bind_ipv6_address = command_line::get_arg(vm, arg_p2p_bind_ipv6_address);
public_zone.m_port = command_line::get_arg(vm, arg_p2p_bind_port);
public_zone.m_port_ipv6 = command_line::get_arg(vm, arg_p2p_bind_port_ipv6);
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);
const bool has_no_igd = command_line::get_arg(vm, arg_no_igd);
const std::string sigd = command_line::get_arg(vm, arg_igd);
if (sigd == "enabled")
{
if (has_no_igd)
{
MFATAL("Cannot have both --" << arg_no_igd.name << " and --" << arg_igd.name << " enabled");
return false;
}
m_igd = igd;
}
else if (sigd == "disabled")
{
m_igd = no_igd;
}
else if (sigd == "delayed")
{
if (has_no_igd && !command_line::is_arg_defaulted(vm, arg_igd))
{
MFATAL("Cannot have both --" << arg_no_igd.name << " and --" << arg_igd.name << " delayed");
return false;
}
m_igd = has_no_igd ? no_igd : delayed_igd;
}
else
{
MFATAL("Invalid value for --" << arg_igd.name << ", expected enabled, disabled or delayed");
return false;
}
m_offline = command_line::get_arg(vm, cryptonote::arg_offline);
m_use_ipv6 = command_line::get_arg(vm, arg_p2p_use_ipv6);
m_require_ipv4 = !command_line::get_arg(vm, arg_p2p_ignore_ipv4);
public_zone.m_notifier = cryptonote::levin::notify{
public_zone.m_net_server.get_io_service(), public_zone.m_net_server.get_config_shared(), nullptr, epee::net_utils::zone::public_, pad_txs, m_payload_handler.get_core()
};
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_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))
{
boost::unique_lock<boost::shared_mutex> lock(public_zone.m_seed_nodes_lock);
if (!parse_peers_and_add_to_container(vm, arg_p2p_seed_node, public_zone.m_seed_nodes))
return false;
}
if (!command_line::is_arg_defaulted(vm, arg_ban_list))
{
const std::string ban_list = command_line::get_arg(vm, arg_ban_list);
const boost::filesystem::path ban_list_path(ban_list);
boost::system::error_code ec;
if (!boost::filesystem::exists(ban_list_path, ec))
{
throw std::runtime_error("Can't find ban list file " + ban_list + " - " + ec.message());
}
std::string banned_ips;
if (!epee::file_io_utils::load_file_to_string(ban_list_path.string(), banned_ips))
{
throw std::runtime_error("Failed to read ban list file " + ban_list);
}
std::istringstream iss(banned_ips);
for (std::string line; std::getline(iss, line); )
{
auto subnet = net::get_ipv4_subnet_address(line);
if (subnet)
{
block_subnet(*subnet, std::numeric_limits<time_t>::max());
continue;
}
const expect<epee::net_utils::network_address> parsed_addr = net::get_network_address(line, 0);
if (parsed_addr)
{
block_host(*parsed_addr, std::numeric_limits<time_t>::max());
continue;
}
MERROR("Invalid IP address or IPv4 subnet: " << line);
}
}
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);
m_enable_dns_blocklist = command_line::get_arg(vm, arg_enable_dns_blocklist);
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(epee::net_utils::zone::public_, 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;
epee::byte_slice noise = nullptr;
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_tx_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;
else
m_payload_handler.set_max_out_peers(proxy.zone, proxy.max_connections);
epee::byte_slice this_noise = nullptr;
if (proxy.noise)
{
static_assert(sizeof(epee::levin::bucket_head2) < CRYPTONOTE_NOISE_BYTES, "noise bytes too small");
if (noise.empty())
noise = epee::levin::make_noise_notify(CRYPTONOTE_NOISE_BYTES);
this_noise = noise.clone();
}
zone.m_notifier = cryptonote::levin::notify{
zone.m_net_server.get_io_service(), zone.m_net_server.get_config_shared(), std::move(this_noise), proxy.zone, pad_txs, m_payload_handler.get_core()
};
}
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_tx_proxy.name);
return false;
}
}
auto inbounds = get_anonymous_inbounds(vm);
if (!inbounds)
return false;
const std::size_t tx_relay_zones = m_network_zones.size();
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;
}
if (zone.m_connect == nullptr && tx_relay_zones <= 1)
{
MERROR("Listed --" << arg_anonymous_inbound.name << " without listing any --" << arg_tx_proxy.name << ". The latter is necessary for sending local txes over anonymity networks");
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;
}
max_connections = command_line::get_arg(vm, arg_max_connections_per_ip);
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 colon_pos = addr.find_last_of(':');
size_t dot_pos = addr.find_last_of('.');
size_t square_brace_pos = addr.find('[');
// IPv6 will have colons regardless. IPv6 and IPv4 address:port will have a colon but also either a . or a [
// as IPv6 addresses specified as address:port are to be specified as "[addr:addr:...:addr]:port"
// One may also specify an IPv6 address as simply "[addr:addr:...:addr]" without the port; in that case
// the square braces will be stripped here.
if ((std::string::npos != colon_pos && std::string::npos != dot_pos) || std::string::npos != square_brace_pos)
{
net::get_network_address_host_and_port(addr, host, port);
}
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
{
epee::net_utils::network_address na{epee::net_utils::ipv6_network_address{endpoint.address().to_v6(), endpoint.port()}};
seed_nodes.push_back(na);
MINFO("Added node: " << na.str());
}
}
return true;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
std::set<std::string> node_server<t_payload_net_handler>::get_ip_seed_nodes() const
{
std::set<std::string> full_addrs;
if (m_nettype == cryptonote::TESTNET)
{
full_addrs.insert("212.83.175.67:28080");
full_addrs.insert("212.83.172.165:28080");
full_addrs.insert("176.9.0.187:28080");
full_addrs.insert("88.99.173.38:28080");
full_addrs.insert("51.79.173.165:28080");
}
else if (m_nettype == cryptonote::STAGENET)
{
full_addrs.insert("162.210.173.150:38080");
full_addrs.insert("176.9.0.187:38080");
full_addrs.insert("88.99.173.38:38080");
full_addrs.insert("51.79.173.165:38080");
}
else if (m_nettype == cryptonote::FAKECHAIN)
{
}
else
{
full_addrs.insert("212.83.175.67:18080");
full_addrs.insert("212.83.172.165:18080");
full_addrs.insert("176.9.0.187:18080");
full_addrs.insert("88.198.163.90:18080");
full_addrs.insert("95.217.25.101:18080");
full_addrs.insert("136.244.105.131:18080");
full_addrs.insert("104.238.221.81:18080");
full_addrs.insert("66.85.74.134:18080");
full_addrs.insert("88.99.173.38:18080");
full_addrs.insert("51.79.173.165:18080");
}
return full_addrs;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
std::set<std::string> node_server<t_payload_net_handler>::get_dns_seed_nodes()
{
if (!m_exclusive_peers.empty() || m_offline)
{
return {};
}
if (m_nettype == cryptonote::TESTNET)
{
return get_ip_seed_nodes();
}
if (m_nettype == cryptonote::STAGENET)
{
return get_ip_seed_nodes();
}
if (!m_enable_dns_seed_nodes)
{
// TODO: a domain can be set through socks, so that the remote side does the lookup for the DNS seed nodes.
m_fallback_seed_nodes_added.test_and_set();
return get_ip_seed_nodes();
}
std::set<std::string> full_addrs;
// 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());
// some libc implementation provide only a very small stack
// for threads, e.g. musl only gives +- 80kb, which is not
// enough to do a resolve with unbound. we request a stack
// of 1 mb, which should be plenty
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())
{
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_ip_seed_nodes())
full_addrs.insert(peer);
m_fallback_seed_nodes_added.test_and_set();
}
return full_addrs;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
std::set<std::string> node_server<t_payload_net_handler>::get_seed_nodes(epee::net_utils::zone zone)
{
switch (zone)
{
case epee::net_utils::zone::public_:
return get_dns_seed_nodes();
case epee::net_utils::zone::tor:
if (m_nettype == cryptonote::MAINNET)
{
return {
"xwvz3ekocr3dkyxfkmgm2hvbpzx2ysqmaxgter7znnqrhoicygkfswid.onion:18083",
"4pixvbejrvihnkxmduo2agsnmc3rrulrqc7s3cbwwrep6h6hrzsibeqd.onion:18083",
"zbjkbsxc5munw3qusl7j2hpcmikhqocdf4pqhnhtpzw5nt5jrmofptid.onion:18083",
"qz43zul2x56jexzoqgkx2trzwcfnr6l3hbtfcfx54g4r3eahy3bssjyd.onion:18083",
};
}
return {};
case epee::net_utils::zone::i2p:
if (m_nettype == cryptonote::MAINNET)
{
return {
"s3l6ke4ed3df466khuebb4poienoingwof7oxtbo6j4n56sghe3a.b32.i2p:18080",
"sel36x6fibfzujwvt4hf5gxolz6kd3jpvbjqg6o3ud2xtionyl2q.b32.i2p:18080"
};
}
return {};
default:
break;
}
throw std::logic_error{"Bad zone given to get_seed_nodes"};
}
//-----------------------------------------------------------------------------------
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, const std::string& proxy, bool proxy_dns_leaks_allowed)
{
bool res = handle_command_line(vm);
CHECK_AND_ASSERT_MES(res, false, "Failed to handle command line");
if (proxy.size())
{
const auto endpoint = net::get_tcp_endpoint(proxy);
CHECK_AND_ASSERT_MES(endpoint, false, "Failed to parse proxy: " << proxy << " - " << endpoint.error());
network_zone& public_zone = m_network_zones[epee::net_utils::zone::public_];
public_zone.m_connect = &socks_connect;
public_zone.m_proxy_address = *endpoint;
public_zone.m_can_pingback = false;
m_enable_dns_seed_nodes &= proxy_dns_leaks_allowed;
m_enable_dns_blocklist &= proxy_dns_leaks_allowed;
}
if (m_nettype == cryptonote::TESTNET)
{
memcpy(&m_network_id, &::config::testnet::NETWORK_ID, 16);
}
else if (m_nettype == cryptonote::STAGENET)
{
memcpy(&m_network_id, &::config::stagenet::NETWORK_ID, 16);
}
else
{
memcpy(&m_network_id, &::config::NETWORK_ID, 16);
}
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);
//only in case if we really sure that we have external visible ip
m_have_address = true;
//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())
{
std::string ipv6_addr = "";
std::string ipv6_port = "";
zone.second.m_net_server.set_connection_filter(this);
MINFO("Binding (IPv4) on " << zone.second.m_bind_ip << ":" << zone.second.m_port);
if (!zone.second.m_bind_ipv6_address.empty() && m_use_ipv6)
{
ipv6_addr = zone.second.m_bind_ipv6_address;
ipv6_port = zone.second.m_port_ipv6;
MINFO("Binding (IPv6) on " << zone.second.m_bind_ipv6_address << ":" << zone.second.m_port_ipv6);
}
res = zone.second.m_net_server.init_server(zone.second.m_port, zone.second.m_bind_ip, ipv6_port, ipv6_addr, m_use_ipv6, m_require_ipv4, 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 (IPv4) to " << public_zone.m_bind_ip << ":" << m_listening_port);
if (m_use_ipv6)
{
m_listening_port_ipv6 = public_zone.m_net_server.get_binded_port_ipv6();
MLOG_GREEN(el::Level::Info, "Net service bound (IPv6) to " << public_zone.m_bind_ipv6_address << ":" << m_listening_port_ipv6);
}
if(m_external_port)
MDEBUG("External port defined as " << m_external_port);
// add UPnP port mapping
if(m_igd == igd)
{
add_upnp_port_mapping_v4(m_listening_port);
if (m_use_ipv6)
{
add_upnp_port_mapping_v6(m_listening_port_ipv6);
}
}
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()
{