// Copyright (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 #include #include #include #include #include #include #include #include #include #include "common/command_line.h" #include "cryptonote_core/cryptonote_core.h" #include "cryptonote_protocol/cryptonote_protocol_defs.h" #include "net_node.h" #include "net/net_utils_base.h" #include "net/socks.h" #include "net/parse.h" #include "net/tor_address.h" #include "net/i2p_address.h" #include "p2p/p2p_protocol_defs.h" #include "string_tools.h" namespace { constexpr const boost::chrono::milliseconds future_poll_interval{500}; constexpr const std::chrono::seconds socks_connect_timeout{P2P_DEFAULT_SOCKS_CONNECT_TIMEOUT}; std::int64_t get_max_connections(const boost::iterator_range value) noexcept { // -1 is default, 0 is error if (value.empty()) return -1; std::uint32_t out = 0; if (epee::string_tools::get_xtype_from_string(out, std::string{value.begin(), value.end()})) return out; return 0; } template epee::net_utils::network_address get_address(const boost::string_ref value) { expect address = T::make(value); if (!address) { MERROR( "Failed to parse " << epee::net_utils::zone_to_string(T::get_zone()) << " address \"" << value << "\": " << address.error().message() ); return {}; } return {std::move(*address)}; } bool start_socks(std::shared_ptr client, const boost::asio::ip::tcp::endpoint& proxy, const epee::net_utils::network_address& remote) { CHECK_AND_ASSERT_MES(client != nullptr, false, "Unexpected null client"); bool set = false; switch (remote.get_type_id()) { case net::tor_address::get_type_id(): set = client->set_connect_command(remote.as()); break; case net::i2p_address::get_type_id(): set = client->set_connect_command(remote.as()); break; default: MERROR("Unsupported network address in socks_connect"); return false; } const bool sent = set && net::socks::client::connect_and_send(std::move(client), proxy); CHECK_AND_ASSERT_MES(sent, false, "Unexpected failure to init socks client"); return true; } } namespace nodetool { const command_line::arg_descriptor arg_p2p_bind_ip = {"p2p-bind-ip", "Interface for p2p network protocol (IPv4)", "0.0.0.0"}; const command_line::arg_descriptor arg_p2p_bind_ipv6_address = {"p2p-bind-ipv6-address", "Interface for p2p network protocol (IPv6)", "::"}; const command_line::arg_descriptor arg_p2p_bind_port = { "p2p-bind-port" , "Port for p2p network protocol (IPv4)" , std::to_string(config::P2P_DEFAULT_PORT) , {{ &cryptonote::arg_testnet_on, &cryptonote::arg_stagenet_on }} , [](std::array testnet_stagenet, bool defaulted, std::string val)->std::string { if (testnet_stagenet[0] && defaulted) return std::to_string(config::testnet::P2P_DEFAULT_PORT); else if (testnet_stagenet[1] && defaulted) return std::to_string(config::stagenet::P2P_DEFAULT_PORT); return val; } }; const command_line::arg_descriptor arg_p2p_bind_port_ipv6 = { "p2p-bind-port-ipv6" , "Port for p2p network protocol (IPv6)" , std::to_string(config::P2P_DEFAULT_PORT) , {{ &cryptonote::arg_testnet_on, &cryptonote::arg_stagenet_on }} , [](std::array testnet_stagenet, bool defaulted, std::string val)->std::string { if (testnet_stagenet[0] && defaulted) return std::to_string(config::testnet::P2P_DEFAULT_PORT); else if (testnet_stagenet[1] && defaulted) return std::to_string(config::stagenet::P2P_DEFAULT_PORT); return val; } }; const command_line::arg_descriptor arg_p2p_external_port = {"p2p-external-port", "External port for p2p network protocol (if port forwarding used with NAT)", 0}; const command_line::arg_descriptor arg_p2p_allow_local_ip = {"allow-local-ip", "Allow local ip add to peer list, mostly in debug purposes"}; const command_line::arg_descriptor > arg_p2p_add_peer = {"add-peer", "Manually add peer to local peerlist"}; const command_line::arg_descriptor > arg_p2p_add_priority_node = {"add-priority-node", "Specify list of peers to connect to and attempt to keep the connection open"}; const command_line::arg_descriptor > arg_p2p_add_exclusive_node = {"add-exclusive-node", "Specify list of peers to connect to only." " If this option is given the options add-priority-node and seed-node are ignored"}; const command_line::arg_descriptor > arg_p2p_seed_node = {"seed-node", "Connect to a node to retrieve peer addresses, and disconnect"}; const command_line::arg_descriptor > arg_tx_proxy = {"tx-proxy", "Send local txes through proxy: ,[,max_connections][,disable_noise] i.e. \"tor,127.0.0.1:9050,100,disable_noise\""}; const command_line::arg_descriptor > arg_anonymous_inbound = {"anonymous-inbound", ",<[bind-ip:]port>[,max_connections] i.e. \"x.onion,127.0.0.1:18083,100\""}; const command_line::arg_descriptor arg_p2p_hide_my_port = {"hide-my-port", "Do not announce yourself as peerlist candidate", false, true}; const command_line::arg_descriptor arg_no_sync = {"no-sync", "Don't synchronize the blockchain with other peers", false}; const command_line::arg_descriptor arg_no_igd = {"no-igd", "Disable UPnP port mapping"}; const command_line::arg_descriptor arg_igd = {"igd", "UPnP port mapping (disabled, enabled, delayed)", "delayed"}; const command_line::arg_descriptor arg_p2p_use_ipv6 = {"p2p-use-ipv6", "Enable IPv6 for p2p", false}; const command_line::arg_descriptor arg_p2p_ignore_ipv4 = {"p2p-ignore-ipv4", "Ignore unsuccessful IPv4 bind for p2p", false}; const command_line::arg_descriptor arg_out_peers = {"out-peers", "set max number of out peers", -1}; const command_line::arg_descriptor arg_in_peers = {"in-peers", "set max number of in peers", -1}; const command_line::arg_descriptor arg_tos_flag = {"tos-flag", "set TOS flag", -1}; const command_line::arg_descriptor arg_limit_rate_up = {"limit-rate-up", "set limit-rate-up [kB/s]", P2P_DEFAULT_LIMIT_RATE_UP}; const command_line::arg_descriptor arg_limit_rate_down = {"limit-rate-down", "set limit-rate-down [kB/s]", P2P_DEFAULT_LIMIT_RATE_DOWN}; const command_line::arg_descriptor arg_limit_rate = {"limit-rate", "set limit-rate [kB/s]", -1}; const command_line::arg_descriptor arg_pad_transactions = { "pad-transactions", "Pad relayed transactions to help defend against traffic volume analysis", false }; boost::optional> get_proxies(boost::program_options::variables_map const& vm) { namespace ip = boost::asio::ip; std::vector proxies{}; const std::vector args = command_line::get_arg(vm, arg_tx_proxy); proxies.reserve(args.size()); for (const boost::string_ref arg : args) { proxies.emplace_back(); auto next = boost::algorithm::make_split_iterator(arg, boost::algorithm::first_finder(",")); CHECK_AND_ASSERT_MES(!next.eof() && !next->empty(), boost::none, "No network type for --" << arg_tx_proxy.name); const boost::string_ref zone{next->begin(), next->size()}; ++next; CHECK_AND_ASSERT_MES(!next.eof() && !next->empty(), boost::none, "No ipv4:port given for --" << arg_tx_proxy.name); const boost::string_ref proxy{next->begin(), next->size()}; ++next; for (unsigned count = 0; !next.eof(); ++count, ++next) { if (2 <= count) { MERROR("Too many ',' characters given to --" << arg_tx_proxy.name); return boost::none; } if (boost::string_ref{next->begin(), next->size()} == "disable_noise") proxies.back().noise = false; else { proxies.back().max_connections = get_max_connections(*next); if (proxies.back().max_connections == 0) { MERROR("Invalid max connections given to --" << arg_tx_proxy.name); return boost::none; } } } switch (epee::net_utils::zone_from_string(zone)) { case epee::net_utils::zone::tor: proxies.back().zone = epee::net_utils::zone::tor; break; case epee::net_utils::zone::i2p: proxies.back().zone = epee::net_utils::zone::i2p; break; default: MERROR("Invalid network for --" << arg_tx_proxy.name); return boost::none; } std::uint32_t ip = 0; std::uint16_t port = 0; if (!epee::string_tools::parse_peer_from_string(ip, port, std::string{proxy}) || port == 0) { MERROR("Invalid ipv4:port given for --" << arg_tx_proxy.name); return boost::none; } proxies.back().address = ip::tcp::endpoint{ip::address_v4{boost::endian::native_to_big(ip)}, port}; } return proxies; } boost::optional> get_anonymous_inbounds(boost::program_options::variables_map const& vm) { std::vector inbounds{}; const std::vector args = command_line::get_arg(vm, arg_anonymous_inbound); inbounds.reserve(args.size()); for (const boost::string_ref arg : args) { inbounds.emplace_back(); auto next = boost::algorithm::make_split_iterator(arg, boost::algorithm::first_finder(",")); CHECK_AND_ASSERT_MES(!next.eof() && !next->empty(), boost::none, "No inbound address for --" << arg_anonymous_inbound.name); const boost::string_ref address{next->begin(), next->size()}; ++next; CHECK_AND_ASSERT_MES(!next.eof() && !next->empty(), boost::none, "No local ipv4:port given for --" << arg_anonymous_inbound.name); const boost::string_ref bind{next->begin(), next->size()}; const std::size_t colon = bind.find_first_of(':'); CHECK_AND_ASSERT_MES(colon < bind.size(), boost::none, "No local port given for --" << arg_anonymous_inbound.name); ++next; if (!next.eof()) { inbounds.back().max_connections = get_max_connections(*next); if (inbounds.back().max_connections == 0) { MERROR("Invalid max connections given to --" << arg_tx_proxy.name); return boost::none; } } expect our_address = net::get_network_address(address, 0); switch (our_address ? our_address->get_type_id() : epee::net_utils::address_type::invalid) { case net::tor_address::get_type_id(): inbounds.back().our_address = std::move(*our_address); inbounds.back().default_remote = net::tor_address::unknown(); break; case net::i2p_address::get_type_id(): inbounds.back().our_address = std::move(*our_address); inbounds.back().default_remote = net::i2p_address::unknown(); break; default: MERROR("Invalid inbound address (" << address << ") for --" << arg_anonymous_inbound.name << ": " << (our_address ? "invalid type" : our_address.error().message())); return boost::none; } // get_address returns default constructed address on error if (inbounds.back().our_address == epee::net_utils::network_address{}) return boost::none; std::uint32_t ip = 0; std::uint16_t port = 0; if (!epee::string_tools::parse_peer_from_string(ip, port, std::string{bind})) { MERROR("Invalid ipv4:port given for --" << arg_anonymous_inbound.name); return boost::none; } inbounds.back().local_ip = std::string{bind.substr(0, colon)}; inbounds.back().local_port = std::string{bind.substr(colon + 1)}; } return inbounds; } bool is_filtered_command(const epee::net_utils::network_address& address, int command) { switch (command) { case nodetool::COMMAND_HANDSHAKE_T::ID: case nodetool::COMMAND_TIMED_SYNC_T::ID: case cryptonote::NOTIFY_NEW_TRANSACTIONS::ID: return false; default: break; } if (address.get_zone() == epee::net_utils::zone::public_) return false; MWARNING("Filtered command (#" << command << ") to/from " << address.str()); return true; } boost::optional socks_connect_internal(const std::atomic& stop_signal, boost::asio::io_service& service, const boost::asio::ip::tcp::endpoint& proxy, const epee::net_utils::network_address& remote) { using socket_type = net::socks::client::stream_type::socket; using client_result = std::pair; struct notify { boost::promise socks_promise; void operator()(boost::system::error_code error, socket_type&& sock) { socks_promise.set_value(std::make_pair(error, std::move(sock))); } }; boost::unique_future socks_result{}; { boost::promise socks_promise{}; socks_result = socks_promise.get_future(); auto client = net::socks::make_connect_client( boost::asio::ip::tcp::socket{service}, net::socks::version::v4a, notify{std::move(socks_promise)} ); if (!start_socks(std::move(client), proxy, remote)) return boost::none; } const auto start = std::chrono::steady_clock::now(); while (socks_result.wait_for(future_poll_interval) == boost::future_status::timeout) { if (socks_connect_timeout < std::chrono::steady_clock::now() - start) { MERROR("Timeout on socks connect (" << proxy << " to " << remote.str() << ")"); return boost::none; } if (stop_signal) return boost::none; } try { auto result = socks_result.get(); if (!result.first) return {std::move(result.second)}; MERROR("Failed to make socks connection to " << remote.str() << " (via " << proxy << "): " << result.first.message()); } catch (boost::broken_promise const&) {} return boost::none; } }