1458 lines
53 KiB
C++
1458 lines
53 KiB
C++
// Copyright (c) 2011-2016 The Cryptonote developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "NetNode.h"
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#include <algorithm>
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#include <fstream>
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#include <boost/foreach.hpp>
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#include <boost/uuid/random_generator.hpp>
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#include <boost/uuid/uuid_io.hpp>
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#include <boost/utility/value_init.hpp>
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#include <miniupnpc/miniupnpc.h>
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#include <miniupnpc/upnpcommands.h>
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#include <System/Context.h>
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#include <System/ContextGroupTimeout.h>
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#include <System/EventLock.h>
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#include <System/InterruptedException.h>
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#include <System/Ipv4Address.h>
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#include <System/Ipv4Resolver.h>
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#include <System/TcpListener.h>
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#include <System/TcpConnector.h>
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#include "version.h"
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#include "Common/StdInputStream.h"
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#include "Common/StdOutputStream.h"
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#include "Common/Util.h"
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#include "crypto/crypto.h"
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#include "ConnectionContext.h"
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#include "LevinProtocol.h"
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#include "P2pProtocolDefinitions.h"
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#include "Serialization/BinaryInputStreamSerializer.h"
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#include "Serialization/BinaryOutputStreamSerializer.h"
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#include "Serialization/SerializationOverloads.h"
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using namespace Common;
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using namespace Logging;
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using namespace CryptoNote;
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namespace {
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size_t get_random_index_with_fixed_probability(size_t max_index) {
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//divide by zero workaround
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if (!max_index)
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return 0;
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size_t x = Crypto::rand<size_t>() % (max_index + 1);
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return (x*x*x) / (max_index*max_index); //parabola \/
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}
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void addPortMapping(Logging::LoggerRef& logger, uint32_t port) {
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// Add UPnP port mapping
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logger(INFO) << "Attempting to add IGD port mapping.";
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int result;
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UPNPDev* deviceList = upnpDiscover(1000, NULL, NULL, 0, 0, &result);
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UPNPUrls urls;
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IGDdatas igdData;
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char lanAddress[64];
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result = UPNP_GetValidIGD(deviceList, &urls, &igdData, lanAddress, sizeof lanAddress);
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freeUPNPDevlist(deviceList);
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if (result != 0) {
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if (result == 1) {
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std::ostringstream portString;
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portString << port;
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if (UPNP_AddPortMapping(urls.controlURL, igdData.first.servicetype, portString.str().c_str(),
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portString.str().c_str(), lanAddress, CryptoNote::CRYPTONOTE_NAME, "TCP", 0, "0") != 0) {
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logger(ERROR) << "UPNP_AddPortMapping failed.";
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} else {
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logger(INFO, BRIGHT_GREEN) << "Added IGD port mapping.";
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}
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} else if (result == 2) {
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logger(INFO) << "IGD was found but reported as not connected.";
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} else if (result == 3) {
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logger(INFO) << "UPnP device was found but not recoginzed as IGD.";
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} else {
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logger(ERROR) << "UPNP_GetValidIGD returned an unknown result code.";
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}
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FreeUPNPUrls(&urls);
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} else {
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logger(INFO) << "No IGD was found.";
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}
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}
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bool parse_peer_from_string(NetworkAddress& pe, const std::string& node_addr) {
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return Common::parseIpAddressAndPort(pe.ip, pe.port, node_addr);
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}
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}
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namespace CryptoNote
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{
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namespace
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{
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const command_line::arg_descriptor<std::string> arg_p2p_bind_ip = {"p2p-bind-ip", "Interface for p2p network protocol", "0.0.0.0"};
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const command_line::arg_descriptor<std::string> arg_p2p_bind_port = {"p2p-bind-port", "Port for p2p network protocol", std::to_string(CryptoNote::P2P_DEFAULT_PORT)};
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const command_line::arg_descriptor<uint32_t> arg_p2p_external_port = {"p2p-external-port", "External port for p2p network protocol (if port forwarding used with NAT)", 0};
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const command_line::arg_descriptor<bool> arg_p2p_allow_local_ip = {"allow-local-ip", "Allow local ip add to peer list, mostly in debug purposes"};
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const command_line::arg_descriptor<std::vector<std::string> > arg_p2p_add_peer = {"add-peer", "Manually add peer to local peerlist"};
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const command_line::arg_descriptor<std::vector<std::string> > arg_p2p_add_priority_node = {"add-priority-node", "Specify list of peers to connect to and attempt to keep the connection open"};
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const command_line::arg_descriptor<std::vector<std::string> > arg_p2p_add_exclusive_node = {"add-exclusive-node", "Specify list of peers to connect to only."
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" If this option is given the options add-priority-node and seed-node are ignored"};
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const command_line::arg_descriptor<std::vector<std::string> > arg_p2p_seed_node = {"seed-node", "Connect to a node to retrieve peer addresses, and disconnect"};
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const command_line::arg_descriptor<bool> arg_p2p_hide_my_port = {"hide-my-port", "Do not announce yourself as peerlist candidate", false, true};
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std::string print_peerlist_to_string(const std::list<PeerlistEntry>& pl) {
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time_t now_time = 0;
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time(&now_time);
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std::stringstream ss;
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ss << std::setfill('0') << std::setw(8) << std::hex << std::noshowbase;
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for (const auto& pe : pl) {
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ss << pe.id << "\t" << pe.adr << " \tlast_seen: " << Common::timeIntervalToString(now_time - pe.last_seen) << std::endl;
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}
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return ss.str();
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}
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}
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//-----------------------------------------------------------------------------------
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// P2pConnectionContext implementation
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//-----------------------------------------------------------------------------------
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bool P2pConnectionContext::pushMessage(P2pMessage&& msg) {
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writeQueueSize += msg.size();
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if (writeQueueSize > P2P_CONNECTION_MAX_WRITE_BUFFER_SIZE) {
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logger(DEBUGGING) << *this << "Write queue overflows. Interrupt connection";
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interrupt();
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return false;
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}
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writeQueue.push_back(std::move(msg));
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queueEvent.set();
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return true;
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}
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std::vector<P2pMessage> P2pConnectionContext::popBuffer() {
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writeOperationStartTime = TimePoint();
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while (writeQueue.empty() && !stopped) {
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queueEvent.wait();
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}
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std::vector<P2pMessage> msgs(std::move(writeQueue));
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writeQueue.clear();
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writeQueueSize = 0;
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writeOperationStartTime = Clock::now();
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queueEvent.clear();
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return msgs;
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}
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uint64_t P2pConnectionContext::writeDuration(TimePoint now) const { // in milliseconds
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return writeOperationStartTime == TimePoint() ? 0 : std::chrono::duration_cast<std::chrono::milliseconds>(now - writeOperationStartTime).count();
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}
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void P2pConnectionContext::interrupt() {
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logger(DEBUGGING) << *this << "Interrupt connection";
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assert(context != nullptr);
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stopped = true;
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queueEvent.set();
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context->interrupt();
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}
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template <typename Command, typename Handler>
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int invokeAdaptor(const BinaryArray& reqBuf, BinaryArray& resBuf, P2pConnectionContext& ctx, Handler handler) {
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typedef typename Command::request Request;
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typedef typename Command::response Response;
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int command = Command::ID;
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Request req = boost::value_initialized<Request>();
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if (!LevinProtocol::decode(reqBuf, req)) {
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throw std::runtime_error("Failed to load_from_binary in command " + std::to_string(command));
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}
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Response res = boost::value_initialized<Response>();
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int ret = handler(command, req, res, ctx);
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resBuf = LevinProtocol::encode(res);
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return ret;
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}
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NodeServer::NodeServer(System::Dispatcher& dispatcher, CryptoNote::CryptoNoteProtocolHandler& payload_handler, Logging::ILogger& log) :
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m_dispatcher(dispatcher),
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m_workingContextGroup(dispatcher),
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m_payload_handler(payload_handler),
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m_allow_local_ip(false),
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m_hide_my_port(false),
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m_network_id(CRYPTONOTE_NETWORK),
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logger(log, "node_server"),
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m_stopEvent(m_dispatcher),
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m_idleTimer(m_dispatcher),
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m_timedSyncTimer(m_dispatcher),
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m_timeoutTimer(m_dispatcher),
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m_stop(false),
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// intervals
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// m_peer_handshake_idle_maker_interval(CryptoNote::P2P_DEFAULT_HANDSHAKE_INTERVAL),
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m_connections_maker_interval(1),
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m_peerlist_store_interval(60*30, false) {
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}
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void NodeServer::serialize(ISerializer& s) {
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uint8_t version = 1;
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s(version, "version");
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if (version != 1) {
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return;
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}
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s(m_peerlist, "peerlist");
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s(m_config.m_peer_id, "peer_id");
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}
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#define INVOKE_HANDLER(CMD, Handler) case CMD::ID: { ret = invokeAdaptor<CMD>(cmd.buf, out, ctx, boost::bind(Handler, this, _1, _2, _3, _4)); break; }
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int NodeServer::handleCommand(const LevinProtocol::Command& cmd, BinaryArray& out, P2pConnectionContext& ctx, bool& handled) {
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int ret = 0;
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handled = true;
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if (cmd.isResponse && cmd.command == COMMAND_TIMED_SYNC::ID) {
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if (!handleTimedSyncResponse(cmd.buf, ctx)) {
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// invalid response, close connection
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ctx.m_state = CryptoNoteConnectionContext::state_shutdown;
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}
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return 0;
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}
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switch (cmd.command) {
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INVOKE_HANDLER(COMMAND_HANDSHAKE, &NodeServer::handle_handshake)
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INVOKE_HANDLER(COMMAND_TIMED_SYNC, &NodeServer::handle_timed_sync)
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INVOKE_HANDLER(COMMAND_PING, &NodeServer::handle_ping)
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#ifdef ALLOW_DEBUG_COMMANDS
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INVOKE_HANDLER(COMMAND_REQUEST_STAT_INFO, &NodeServer::handle_get_stat_info)
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INVOKE_HANDLER(COMMAND_REQUEST_NETWORK_STATE, &NodeServer::handle_get_network_state)
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INVOKE_HANDLER(COMMAND_REQUEST_PEER_ID, &NodeServer::handle_get_peer_id)
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#endif
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default: {
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handled = false;
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ret = m_payload_handler.handleCommand(cmd.isNotify, cmd.command, cmd.buf, out, ctx, handled);
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}
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}
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return ret;
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}
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#undef INVOKE_HANDLER
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//-----------------------------------------------------------------------------------
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void NodeServer::init_options(boost::program_options::options_description& desc)
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{
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command_line::add_arg(desc, arg_p2p_bind_ip);
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command_line::add_arg(desc, arg_p2p_bind_port);
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command_line::add_arg(desc, arg_p2p_external_port);
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command_line::add_arg(desc, arg_p2p_allow_local_ip);
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command_line::add_arg(desc, arg_p2p_add_peer);
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command_line::add_arg(desc, arg_p2p_add_priority_node);
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command_line::add_arg(desc, arg_p2p_add_exclusive_node);
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command_line::add_arg(desc, arg_p2p_seed_node);
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command_line::add_arg(desc, arg_p2p_hide_my_port);
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}
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//-----------------------------------------------------------------------------------
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bool NodeServer::init_config() {
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try {
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std::string state_file_path = m_config_folder + "/" + m_p2p_state_filename;
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bool loaded = false;
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try {
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std::ifstream p2p_data;
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p2p_data.open(state_file_path, std::ios_base::binary | std::ios_base::in);
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if (!p2p_data.fail()) {
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StdInputStream inputStream(p2p_data);
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BinaryInputStreamSerializer a(inputStream);
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CryptoNote::serialize(*this, a);
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loaded = true;
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}
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} catch (std::exception&) {
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}
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if (!loaded) {
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make_default_config();
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}
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//at this moment we have hardcoded config
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m_config.m_net_config.handshake_interval = CryptoNote::P2P_DEFAULT_HANDSHAKE_INTERVAL;
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m_config.m_net_config.connections_count = CryptoNote::P2P_DEFAULT_CONNECTIONS_COUNT;
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m_config.m_net_config.packet_max_size = CryptoNote::P2P_DEFAULT_PACKET_MAX_SIZE; //20 MB limit
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m_config.m_net_config.config_id = 0; // initial config
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m_config.m_net_config.connection_timeout = CryptoNote::P2P_DEFAULT_CONNECTION_TIMEOUT;
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m_config.m_net_config.ping_connection_timeout = CryptoNote::P2P_DEFAULT_PING_CONNECTION_TIMEOUT;
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m_config.m_net_config.send_peerlist_sz = CryptoNote::P2P_DEFAULT_PEERS_IN_HANDSHAKE;
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m_first_connection_maker_call = true;
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} catch (const std::exception& e) {
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logger(ERROR) << "init_config failed: " << e.what();
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return false;
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}
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return true;
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}
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//-----------------------------------------------------------------------------------
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void NodeServer::for_each_connection(std::function<void(CryptoNoteConnectionContext&, PeerIdType)> f)
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{
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for (auto& ctx : m_connections) {
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f(ctx.second, ctx.second.peerId);
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}
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}
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//-----------------------------------------------------------------------------------
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void NodeServer::externalRelayNotifyToAll(int command, const BinaryArray& data_buff) {
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m_dispatcher.remoteSpawn([this, command, data_buff] {
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relay_notify_to_all(command, data_buff, nullptr);
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});
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}
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//-----------------------------------------------------------------------------------
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bool NodeServer::make_default_config()
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{
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m_config.m_peer_id = Crypto::rand<uint64_t>();
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return true;
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}
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//-----------------------------------------------------------------------------------
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bool NodeServer::handle_command_line(const boost::program_options::variables_map& vm)
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{
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m_bind_ip = command_line::get_arg(vm, arg_p2p_bind_ip);
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m_port = command_line::get_arg(vm, arg_p2p_bind_port);
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m_external_port = command_line::get_arg(vm, arg_p2p_external_port);
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m_allow_local_ip = command_line::get_arg(vm, arg_p2p_allow_local_ip);
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if (command_line::has_arg(vm, arg_p2p_add_peer))
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{
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std::vector<std::string> perrs = command_line::get_arg(vm, arg_p2p_add_peer);
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for(const std::string& pr_str: perrs)
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{
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PeerlistEntry pe = boost::value_initialized<PeerlistEntry>();
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pe.id = Crypto::rand<uint64_t>();
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bool r = parse_peer_from_string(pe.adr, pr_str);
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if (!(r)) { logger(ERROR, BRIGHT_RED) << "Failed to parse address from string: " << pr_str; return false; }
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m_command_line_peers.push_back(pe);
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}
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}
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if (command_line::has_arg(vm,arg_p2p_add_exclusive_node)) {
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if (!parse_peers_and_add_to_container(vm, arg_p2p_add_exclusive_node, m_exclusive_peers))
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return false;
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}
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if (command_line::has_arg(vm, arg_p2p_add_priority_node)) {
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if (!parse_peers_and_add_to_container(vm, arg_p2p_add_priority_node, m_priority_peers))
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return false;
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}
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if (command_line::has_arg(vm, arg_p2p_seed_node)) {
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if (!parse_peers_and_add_to_container(vm, arg_p2p_seed_node, m_seed_nodes))
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return false;
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}
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if (command_line::has_arg(vm, arg_p2p_hide_my_port)) {
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m_hide_my_port = true;
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}
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return true;
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}
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bool NodeServer::handleConfig(const NetNodeConfig& config) {
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m_bind_ip = config.getBindIp();
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m_port = std::to_string(config.getBindPort());
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m_external_port = config.getExternalPort();
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m_allow_local_ip = config.getAllowLocalIp();
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auto peers = config.getPeers();
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std::copy(peers.begin(), peers.end(), std::back_inserter(m_command_line_peers));
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auto exclusiveNodes = config.getExclusiveNodes();
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std::copy(exclusiveNodes.begin(), exclusiveNodes.end(), std::back_inserter(m_exclusive_peers));
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auto priorityNodes = config.getPriorityNodes();
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std::copy(priorityNodes.begin(), priorityNodes.end(), std::back_inserter(m_priority_peers));
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auto seedNodes = config.getSeedNodes();
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std::copy(seedNodes.begin(), seedNodes.end(), std::back_inserter(m_seed_nodes));
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m_hide_my_port = config.getHideMyPort();
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return true;
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}
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bool NodeServer::append_net_address(std::vector<NetworkAddress>& nodes, const std::string& addr) {
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size_t pos = addr.find_last_of(':');
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if (!(std::string::npos != pos && addr.length() - 1 != pos && 0 != pos)) {
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logger(ERROR, BRIGHT_RED) << "Failed to parse seed address from string: '" << addr << '\'';
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return false;
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}
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std::string host = addr.substr(0, pos);
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try {
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uint32_t port = Common::fromString<uint32_t>(addr.substr(pos + 1));
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System::Ipv4Resolver resolver(m_dispatcher);
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auto addr = resolver.resolve(host);
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nodes.push_back(NetworkAddress{hostToNetwork(addr.getValue()), port});
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logger(TRACE) << "Added seed node: " << nodes.back() << " (" << host << ")";
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} catch (const std::exception& e) {
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logger(ERROR, BRIGHT_YELLOW) << "Failed to resolve host name '" << host << "': " << e.what();
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return false;
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}
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return true;
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}
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//-----------------------------------------------------------------------------------
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bool NodeServer::init(const NetNodeConfig& config) {
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if (!config.getTestnet()) {
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for (auto seed : CryptoNote::SEED_NODES) {
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append_net_address(m_seed_nodes, seed);
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}
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} else {
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m_network_id.data[0] += 1;
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}
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if (!handleConfig(config)) {
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logger(ERROR, BRIGHT_RED) << "Failed to handle command line";
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return false;
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}
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m_config_folder = config.getConfigFolder();
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m_p2p_state_filename = config.getP2pStateFilename();
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if (!init_config()) {
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logger(ERROR, BRIGHT_RED) << "Failed to init config.";
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return false;
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}
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if (!m_peerlist.init(m_allow_local_ip)) {
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logger(ERROR, BRIGHT_RED) << "Failed to init peerlist.";
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return false;
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}
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for(auto& p: m_command_line_peers)
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m_peerlist.append_with_peer_white(p);
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//only in case if we really sure that we have external visible ip
|
|
m_have_address = true;
|
|
m_ip_address = 0;
|
|
m_last_stat_request_time = 0;
|
|
|
|
//configure self
|
|
// m_net_server.get_config_object().m_pcommands_handler = this;
|
|
// m_net_server.get_config_object().m_invoke_timeout = CryptoNote::P2P_DEFAULT_INVOKE_TIMEOUT;
|
|
|
|
//try to bind
|
|
logger(INFO) << "Binding on " << m_bind_ip << ":" << m_port;
|
|
m_listeningPort = Common::fromString<uint16_t>(m_port);
|
|
|
|
m_listener = System::TcpListener(m_dispatcher, System::Ipv4Address(m_bind_ip), static_cast<uint16_t>(m_listeningPort));
|
|
|
|
logger(INFO, BRIGHT_GREEN) << "Net service binded on " << m_bind_ip << ":" << m_listeningPort;
|
|
|
|
if(m_external_port)
|
|
logger(INFO) << "External port defined as " << m_external_port;
|
|
|
|
addPortMapping(logger, m_listeningPort);
|
|
|
|
return true;
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
CryptoNote::CryptoNoteProtocolHandler& NodeServer::get_payload_object()
|
|
{
|
|
return m_payload_handler;
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
bool NodeServer::run() {
|
|
logger(INFO) << "Starting node_server";
|
|
|
|
m_workingContextGroup.spawn(std::bind(&NodeServer::acceptLoop, this));
|
|
m_workingContextGroup.spawn(std::bind(&NodeServer::onIdle, this));
|
|
m_workingContextGroup.spawn(std::bind(&NodeServer::timedSyncLoop, this));
|
|
m_workingContextGroup.spawn(std::bind(&NodeServer::timeoutLoop, this));
|
|
|
|
m_stopEvent.wait();
|
|
|
|
logger(INFO) << "Stopping NodeServer and it's" << m_connections.size() << " connections...";
|
|
m_workingContextGroup.interrupt();
|
|
m_workingContextGroup.wait();
|
|
|
|
logger(INFO) << "NodeServer loop stopped";
|
|
return true;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
uint64_t NodeServer::get_connections_count() {
|
|
return m_connections.size();
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
bool NodeServer::deinit() {
|
|
return store_config();
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
bool NodeServer::store_config()
|
|
{
|
|
try {
|
|
if (!Tools::create_directories_if_necessary(m_config_folder)) {
|
|
logger(INFO) << "Failed to create data directory: " << m_config_folder;
|
|
return false;
|
|
}
|
|
|
|
std::string state_file_path = m_config_folder + "/" + m_p2p_state_filename;
|
|
std::ofstream p2p_data;
|
|
p2p_data.open(state_file_path, std::ios_base::binary | std::ios_base::out | std::ios::trunc);
|
|
if (p2p_data.fail()) {
|
|
logger(INFO) << "Failed to save config to file " << state_file_path;
|
|
return false;
|
|
};
|
|
|
|
StdOutputStream stream(p2p_data);
|
|
BinaryOutputStreamSerializer a(stream);
|
|
CryptoNote::serialize(*this, a);
|
|
return true;
|
|
} catch (const std::exception& e) {
|
|
logger(WARNING) << "store_config failed: " << e.what();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
bool NodeServer::sendStopSignal() {
|
|
m_stop = true;
|
|
|
|
m_dispatcher.remoteSpawn([this] {
|
|
m_stopEvent.set();
|
|
m_payload_handler.stop();
|
|
});
|
|
|
|
logger(INFO, BRIGHT_YELLOW) << "Stop signal sent";
|
|
return true;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------------
|
|
bool NodeServer::handshake(CryptoNote::LevinProtocol& proto, P2pConnectionContext& context, bool just_take_peerlist) {
|
|
COMMAND_HANDSHAKE::request arg;
|
|
COMMAND_HANDSHAKE::response rsp;
|
|
get_local_node_data(arg.node_data);
|
|
m_payload_handler.get_payload_sync_data(arg.payload_data);
|
|
|
|
if (!proto.invoke(COMMAND_HANDSHAKE::ID, arg, rsp)) {
|
|
logger(Logging::ERROR) << context << "Failed to invoke COMMAND_HANDSHAKE, closing connection.";
|
|
return false;
|
|
}
|
|
|
|
context.version = rsp.node_data.version;
|
|
|
|
if (rsp.node_data.network_id != m_network_id) {
|
|
logger(Logging::ERROR) << context << "COMMAND_HANDSHAKE Failed, wrong network! (" << rsp.node_data.network_id << "), closing connection.";
|
|
return false;
|
|
}
|
|
|
|
if (!handle_remote_peerlist(rsp.local_peerlist, rsp.node_data.local_time, context)) {
|
|
logger(Logging::ERROR) << context << "COMMAND_HANDSHAKE: failed to handle_remote_peerlist(...), closing connection.";
|
|
return false;
|
|
}
|
|
|
|
if (just_take_peerlist) {
|
|
return true;
|
|
}
|
|
|
|
if (!m_payload_handler.process_payload_sync_data(rsp.payload_data, context, true)) {
|
|
logger(Logging::ERROR) << context << "COMMAND_HANDSHAKE invoked, but process_payload_sync_data returned false, dropping connection.";
|
|
return false;
|
|
}
|
|
|
|
context.peerId = rsp.node_data.peer_id;
|
|
m_peerlist.set_peer_just_seen(rsp.node_data.peer_id, context.m_remote_ip, context.m_remote_port);
|
|
|
|
if (rsp.node_data.peer_id == m_config.m_peer_id) {
|
|
logger(Logging::TRACE) << context << "Connection to self detected, dropping connection";
|
|
return false;
|
|
}
|
|
|
|
logger(Logging::DEBUGGING) << context << "COMMAND_HANDSHAKE INVOKED OK";
|
|
return true;
|
|
}
|
|
|
|
|
|
bool NodeServer::timedSync() {
|
|
COMMAND_TIMED_SYNC::request arg = boost::value_initialized<COMMAND_TIMED_SYNC::request>();
|
|
m_payload_handler.get_payload_sync_data(arg.payload_data);
|
|
auto cmdBuf = LevinProtocol::encode<COMMAND_TIMED_SYNC::request>(arg);
|
|
|
|
forEachConnection([&](P2pConnectionContext& conn) {
|
|
if (conn.peerId &&
|
|
(conn.m_state == CryptoNoteConnectionContext::state_normal ||
|
|
conn.m_state == CryptoNoteConnectionContext::state_idle)) {
|
|
conn.pushMessage(P2pMessage(P2pMessage::COMMAND, COMMAND_TIMED_SYNC::ID, cmdBuf));
|
|
}
|
|
});
|
|
|
|
return true;
|
|
}
|
|
|
|
bool NodeServer::handleTimedSyncResponse(const BinaryArray& in, P2pConnectionContext& context) {
|
|
COMMAND_TIMED_SYNC::response rsp;
|
|
if (!LevinProtocol::decode<COMMAND_TIMED_SYNC::response>(in, rsp)) {
|
|
return false;
|
|
}
|
|
|
|
if (!handle_remote_peerlist(rsp.local_peerlist, rsp.local_time, context)) {
|
|
logger(Logging::ERROR) << context << "COMMAND_TIMED_SYNC: failed to handle_remote_peerlist(...), closing connection.";
|
|
return false;
|
|
}
|
|
|
|
if (!context.m_is_income) {
|
|
m_peerlist.set_peer_just_seen(context.peerId, context.m_remote_ip, context.m_remote_port);
|
|
}
|
|
|
|
if (!m_payload_handler.process_payload_sync_data(rsp.payload_data, context, false)) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void NodeServer::forEachConnection(std::function<void(P2pConnectionContext&)> action) {
|
|
|
|
// create copy of connection ids because the list can be changed during action
|
|
std::vector<boost::uuids::uuid> connectionIds;
|
|
connectionIds.reserve(m_connections.size());
|
|
for (const auto& c : m_connections) {
|
|
connectionIds.push_back(c.first);
|
|
}
|
|
|
|
for (const auto& connId : connectionIds) {
|
|
auto it = m_connections.find(connId);
|
|
if (it != m_connections.end()) {
|
|
action(it->second);
|
|
}
|
|
}
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------------
|
|
bool NodeServer::is_peer_used(const PeerlistEntry& peer) {
|
|
if(m_config.m_peer_id == peer.id)
|
|
return true; //dont make connections to ourself
|
|
|
|
for (const auto& kv : m_connections) {
|
|
const auto& cntxt = kv.second;
|
|
if(cntxt.peerId == peer.id || (!cntxt.m_is_income && peer.adr.ip == cntxt.m_remote_ip && peer.adr.port == cntxt.m_remote_port)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
bool NodeServer::is_addr_connected(const NetworkAddress& peer) {
|
|
for (const auto& conn : m_connections) {
|
|
if (!conn.second.m_is_income && peer.ip == conn.second.m_remote_ip && peer.port == conn.second.m_remote_port) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
bool NodeServer::try_to_connect_and_handshake_with_new_peer(const NetworkAddress& na, bool just_take_peerlist, uint64_t last_seen_stamp, bool white) {
|
|
|
|
logger(DEBUGGING) << "Connecting to " << na << " (white=" << white << ", last_seen: "
|
|
<< (last_seen_stamp ? Common::timeIntervalToString(time(NULL) - last_seen_stamp) : "never") << ")...";
|
|
|
|
try {
|
|
System::TcpConnection connection;
|
|
|
|
try {
|
|
System::Context<System::TcpConnection> connectionContext(m_dispatcher, [&] {
|
|
System::TcpConnector connector(m_dispatcher);
|
|
return connector.connect(System::Ipv4Address(Common::ipAddressToString(na.ip)), static_cast<uint16_t>(na.port));
|
|
});
|
|
|
|
System::Context<> timeoutContext(m_dispatcher, [&] {
|
|
System::Timer(m_dispatcher).sleep(std::chrono::milliseconds(m_config.m_net_config.connection_timeout));
|
|
connectionContext.interrupt();
|
|
logger(DEBUGGING) << "Connection to " << na <<" timed out, interrupt it";
|
|
});
|
|
|
|
connection = std::move(connectionContext.get());
|
|
} catch (System::InterruptedException&) {
|
|
logger(DEBUGGING) << "Connection timed out";
|
|
return false;
|
|
}
|
|
|
|
P2pConnectionContext ctx(m_dispatcher, logger.getLogger(), std::move(connection));
|
|
|
|
ctx.m_connection_id = boost::uuids::random_generator()();
|
|
ctx.m_remote_ip = na.ip;
|
|
ctx.m_remote_port = na.port;
|
|
ctx.m_is_income = false;
|
|
ctx.m_started = time(nullptr);
|
|
|
|
|
|
try {
|
|
System::Context<bool> handshakeContext(m_dispatcher, [&] {
|
|
CryptoNote::LevinProtocol proto(ctx.connection);
|
|
return handshake(proto, ctx, just_take_peerlist);
|
|
});
|
|
|
|
System::Context<> timeoutContext(m_dispatcher, [&] {
|
|
// Here we use connection_timeout * 3, one for this handshake, and two for back ping from peer.
|
|
System::Timer(m_dispatcher).sleep(std::chrono::milliseconds(m_config.m_net_config.connection_timeout * 3));
|
|
handshakeContext.interrupt();
|
|
logger(DEBUGGING) << "Handshake with " << na << " timed out, interrupt it";
|
|
});
|
|
|
|
if (!handshakeContext.get()) {
|
|
logger(WARNING) << "Failed to HANDSHAKE with peer " << na;
|
|
return false;
|
|
}
|
|
} catch (System::InterruptedException&) {
|
|
logger(DEBUGGING) << "Handshake timed out";
|
|
return false;
|
|
}
|
|
|
|
if (just_take_peerlist) {
|
|
logger(Logging::DEBUGGING, Logging::BRIGHT_GREEN) << ctx << "CONNECTION HANDSHAKED OK AND CLOSED.";
|
|
return true;
|
|
}
|
|
|
|
PeerlistEntry pe_local = boost::value_initialized<PeerlistEntry>();
|
|
pe_local.adr = na;
|
|
pe_local.id = ctx.peerId;
|
|
pe_local.last_seen = time(nullptr);
|
|
m_peerlist.append_with_peer_white(pe_local);
|
|
|
|
if (m_stop) {
|
|
throw System::InterruptedException();
|
|
}
|
|
|
|
auto iter = m_connections.emplace(ctx.m_connection_id, std::move(ctx)).first;
|
|
const boost::uuids::uuid& connectionId = iter->first;
|
|
P2pConnectionContext& connectionContext = iter->second;
|
|
|
|
m_workingContextGroup.spawn(std::bind(&NodeServer::connectionHandler, this, std::cref(connectionId), std::ref(connectionContext)));
|
|
|
|
return true;
|
|
} catch (System::InterruptedException&) {
|
|
logger(DEBUGGING) << "Connection process interrupted";
|
|
throw;
|
|
} catch (const std::exception& e) {
|
|
logger(DEBUGGING) << "Connection to " << na << " failed: " << e.what();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------------
|
|
bool NodeServer::make_new_connection_from_peerlist(bool use_white_list)
|
|
{
|
|
size_t local_peers_count = use_white_list ? m_peerlist.get_white_peers_count():m_peerlist.get_gray_peers_count();
|
|
if(!local_peers_count)
|
|
return false;//no peers
|
|
|
|
size_t max_random_index = std::min<uint64_t>(local_peers_count -1, 20);
|
|
|
|
std::set<size_t> tried_peers;
|
|
|
|
size_t try_count = 0;
|
|
size_t rand_count = 0;
|
|
while(rand_count < (max_random_index+1)*3 && try_count < 10 && !m_stop) {
|
|
++rand_count;
|
|
size_t random_index = get_random_index_with_fixed_probability(max_random_index);
|
|
if (!(random_index < local_peers_count)) { logger(ERROR, BRIGHT_RED) << "random_starter_index < peers_local.size() failed!!"; return false; }
|
|
|
|
if(tried_peers.count(random_index))
|
|
continue;
|
|
|
|
tried_peers.insert(random_index);
|
|
PeerlistEntry pe = boost::value_initialized<PeerlistEntry>();
|
|
bool r = use_white_list ? m_peerlist.get_white_peer_by_index(pe, random_index):m_peerlist.get_gray_peer_by_index(pe, random_index);
|
|
if (!(r)) { logger(ERROR, BRIGHT_RED) << "Failed to get random peer from peerlist(white:" << use_white_list << ")"; return false; }
|
|
|
|
++try_count;
|
|
|
|
if(is_peer_used(pe))
|
|
continue;
|
|
|
|
logger(DEBUGGING) << "Selected peer: " << pe.id << " " << pe.adr << " [white=" << use_white_list
|
|
<< "] last_seen: " << (pe.last_seen ? Common::timeIntervalToString(time(NULL) - pe.last_seen) : "never");
|
|
|
|
if(!try_to_connect_and_handshake_with_new_peer(pe.adr, false, pe.last_seen, use_white_list))
|
|
continue;
|
|
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
bool NodeServer::connections_maker()
|
|
{
|
|
if (!connect_to_peerlist(m_exclusive_peers)) {
|
|
return false;
|
|
}
|
|
|
|
if (!m_exclusive_peers.empty()) {
|
|
return true;
|
|
}
|
|
|
|
if(!m_peerlist.get_white_peers_count() && m_seed_nodes.size()) {
|
|
size_t try_count = 0;
|
|
size_t current_index = Crypto::rand<size_t>() % m_seed_nodes.size();
|
|
|
|
while(true) {
|
|
if(try_to_connect_and_handshake_with_new_peer(m_seed_nodes[current_index], true))
|
|
break;
|
|
|
|
if(++try_count > m_seed_nodes.size()) {
|
|
logger(ERROR) << "Failed to connect to any of seed peers, continuing without seeds";
|
|
break;
|
|
}
|
|
if(++current_index >= m_seed_nodes.size())
|
|
current_index = 0;
|
|
}
|
|
}
|
|
|
|
if (!connect_to_peerlist(m_priority_peers)) return false;
|
|
|
|
size_t expected_white_connections = (m_config.m_net_config.connections_count * CryptoNote::P2P_DEFAULT_WHITELIST_CONNECTIONS_PERCENT) / 100;
|
|
|
|
size_t conn_count = get_outgoing_connections_count();
|
|
if(conn_count < m_config.m_net_config.connections_count)
|
|
{
|
|
if(conn_count < expected_white_connections)
|
|
{
|
|
//start from white list
|
|
if(!make_expected_connections_count(true, expected_white_connections))
|
|
return false;
|
|
//and then do grey list
|
|
if(!make_expected_connections_count(false, m_config.m_net_config.connections_count))
|
|
return false;
|
|
}else
|
|
{
|
|
//start from grey list
|
|
if(!make_expected_connections_count(false, m_config.m_net_config.connections_count))
|
|
return false;
|
|
//and then do white list
|
|
if(!make_expected_connections_count(true, m_config.m_net_config.connections_count))
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
bool NodeServer::make_expected_connections_count(bool white_list, size_t expected_connections)
|
|
{
|
|
size_t conn_count = get_outgoing_connections_count();
|
|
//add new connections from white peers
|
|
while(conn_count < expected_connections)
|
|
{
|
|
if(m_stopEvent.get())
|
|
return false;
|
|
|
|
if(!make_new_connection_from_peerlist(white_list))
|
|
break;
|
|
conn_count = get_outgoing_connections_count();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------------
|
|
size_t NodeServer::get_outgoing_connections_count() {
|
|
size_t count = 0;
|
|
for (const auto& cntxt : m_connections) {
|
|
if (!cntxt.second.m_is_income)
|
|
++count;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------------
|
|
bool NodeServer::idle_worker() {
|
|
try {
|
|
m_connections_maker_interval.call(std::bind(&NodeServer::connections_maker, this));
|
|
m_peerlist_store_interval.call(std::bind(&NodeServer::store_config, this));
|
|
} catch (std::exception& e) {
|
|
logger(DEBUGGING) << "exception in idle_worker: " << e.what();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------------
|
|
bool NodeServer::fix_time_delta(std::list<PeerlistEntry>& local_peerlist, time_t local_time, int64_t& delta)
|
|
{
|
|
//fix time delta
|
|
time_t now = 0;
|
|
time(&now);
|
|
delta = now - local_time;
|
|
|
|
BOOST_FOREACH(PeerlistEntry& be, local_peerlist)
|
|
{
|
|
if(be.last_seen > uint64_t(local_time))
|
|
{
|
|
logger(ERROR) << "FOUND FUTURE peerlist for entry " << be.adr << " last_seen: " << be.last_seen << ", local_time(on remote node):" << local_time;
|
|
return false;
|
|
}
|
|
be.last_seen += delta;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
bool NodeServer::handle_remote_peerlist(const std::list<PeerlistEntry>& peerlist, time_t local_time, const CryptoNoteConnectionContext& context)
|
|
{
|
|
int64_t delta = 0;
|
|
std::list<PeerlistEntry> peerlist_ = peerlist;
|
|
if(!fix_time_delta(peerlist_, local_time, delta))
|
|
return false;
|
|
logger(Logging::TRACE) << context << "REMOTE PEERLIST: TIME_DELTA: " << delta << ", remote peerlist size=" << peerlist_.size();
|
|
logger(Logging::TRACE) << context << "REMOTE PEERLIST: " << print_peerlist_to_string(peerlist_);
|
|
return m_peerlist.merge_peerlist(peerlist_);
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
bool NodeServer::get_local_node_data(basic_node_data& node_data)
|
|
{
|
|
node_data.version = P2PProtocolVersion::CURRENT;
|
|
time_t local_time;
|
|
time(&local_time);
|
|
node_data.local_time = local_time;
|
|
node_data.peer_id = m_config.m_peer_id;
|
|
if(!m_hide_my_port)
|
|
node_data.my_port = m_external_port ? m_external_port : m_listeningPort;
|
|
else
|
|
node_data.my_port = 0;
|
|
node_data.network_id = m_network_id;
|
|
return true;
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
#ifdef ALLOW_DEBUG_COMMANDS
|
|
|
|
bool NodeServer::check_trust(const proof_of_trust &tr) {
|
|
uint64_t local_time = time(NULL);
|
|
uint64_t time_delata = local_time > tr.time ? local_time - tr.time : tr.time - local_time;
|
|
|
|
if (time_delata > 24 * 60 * 60) {
|
|
logger(ERROR) << "check_trust failed to check time conditions, local_time=" << local_time << ", proof_time=" << tr.time;
|
|
return false;
|
|
}
|
|
|
|
if (m_last_stat_request_time >= tr.time) {
|
|
logger(ERROR) << "check_trust failed to check time conditions, last_stat_request_time=" << m_last_stat_request_time << ", proof_time=" << tr.time;
|
|
return false;
|
|
}
|
|
|
|
if (m_config.m_peer_id != tr.peer_id) {
|
|
logger(ERROR) << "check_trust failed: peer_id mismatch (passed " << tr.peer_id << ", expected " << m_config.m_peer_id << ")";
|
|
return false;
|
|
}
|
|
|
|
Crypto::PublicKey pk;
|
|
Common::podFromHex(CryptoNote::P2P_STAT_TRUSTED_PUB_KEY, pk);
|
|
Crypto::Hash h = get_proof_of_trust_hash(tr);
|
|
if (!Crypto::check_signature(h, pk, tr.sign)) {
|
|
logger(ERROR) << "check_trust failed: sign check failed";
|
|
return false;
|
|
}
|
|
|
|
//update last request time
|
|
m_last_stat_request_time = tr.time;
|
|
return true;
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
int NodeServer::handle_get_stat_info(int command, COMMAND_REQUEST_STAT_INFO::request& arg, COMMAND_REQUEST_STAT_INFO::response& rsp, P2pConnectionContext& context)
|
|
{
|
|
if(!check_trust(arg.tr)) {
|
|
context.m_state = CryptoNoteConnectionContext::state_shutdown;
|
|
return 1;
|
|
}
|
|
rsp.connections_count = get_connections_count();
|
|
rsp.incoming_connections_count = rsp.connections_count - get_outgoing_connections_count();
|
|
rsp.version = PROJECT_VERSION_LONG;
|
|
rsp.os_version = Tools::get_os_version_string();
|
|
m_payload_handler.get_stat_info(rsp.payload_info);
|
|
return 1;
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
int NodeServer::handle_get_network_state(int command, COMMAND_REQUEST_NETWORK_STATE::request& arg, COMMAND_REQUEST_NETWORK_STATE::response& rsp, P2pConnectionContext& context)
|
|
{
|
|
if(!check_trust(arg.tr)) {
|
|
context.m_state = CryptoNoteConnectionContext::state_shutdown;
|
|
return 1;
|
|
}
|
|
|
|
for (const auto& cntxt : m_connections) {
|
|
connection_entry ce;
|
|
ce.adr.ip = cntxt.second.m_remote_ip;
|
|
ce.adr.port = cntxt.second.m_remote_port;
|
|
ce.id = cntxt.second.peerId;
|
|
ce.is_income = cntxt.second.m_is_income;
|
|
rsp.connections_list.push_back(ce);
|
|
}
|
|
|
|
m_peerlist.get_peerlist_full(rsp.local_peerlist_gray, rsp.local_peerlist_white);
|
|
rsp.my_id = m_config.m_peer_id;
|
|
rsp.local_time = time(NULL);
|
|
return 1;
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
int NodeServer::handle_get_peer_id(int command, COMMAND_REQUEST_PEER_ID::request& arg, COMMAND_REQUEST_PEER_ID::response& rsp, P2pConnectionContext& context)
|
|
{
|
|
rsp.my_id = m_config.m_peer_id;
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
void NodeServer::relay_notify_to_all(int command, const BinaryArray& data_buff, const net_connection_id* excludeConnection) {
|
|
net_connection_id excludeId = excludeConnection ? *excludeConnection : boost::value_initialized<net_connection_id>();
|
|
|
|
forEachConnection([&](P2pConnectionContext& conn) {
|
|
if (conn.peerId && conn.m_connection_id != excludeId &&
|
|
(conn.m_state == CryptoNoteConnectionContext::state_normal ||
|
|
conn.m_state == CryptoNoteConnectionContext::state_synchronizing)) {
|
|
conn.pushMessage(P2pMessage(P2pMessage::NOTIFY, command, data_buff));
|
|
}
|
|
});
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------------
|
|
bool NodeServer::invoke_notify_to_peer(int command, const BinaryArray& buffer, const CryptoNoteConnectionContext& context) {
|
|
auto it = m_connections.find(context.m_connection_id);
|
|
if (it == m_connections.end()) {
|
|
return false;
|
|
}
|
|
|
|
it->second.pushMessage(P2pMessage(P2pMessage::NOTIFY, command, buffer));
|
|
|
|
return true;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------------
|
|
bool NodeServer::try_ping(basic_node_data& node_data, P2pConnectionContext& context) {
|
|
if(!node_data.my_port) {
|
|
return false;
|
|
}
|
|
|
|
uint32_t actual_ip = context.m_remote_ip;
|
|
if(!m_peerlist.is_ip_allowed(actual_ip)) {
|
|
return false;
|
|
}
|
|
|
|
auto ip = Common::ipAddressToString(actual_ip);
|
|
auto port = node_data.my_port;
|
|
auto peerId = node_data.peer_id;
|
|
|
|
try {
|
|
COMMAND_PING::request req;
|
|
COMMAND_PING::response rsp;
|
|
System::Context<> pingContext(m_dispatcher, [&] {
|
|
System::TcpConnector connector(m_dispatcher);
|
|
auto connection = connector.connect(System::Ipv4Address(ip), static_cast<uint16_t>(port));
|
|
LevinProtocol(connection).invoke(COMMAND_PING::ID, req, rsp);
|
|
});
|
|
|
|
System::Context<> timeoutContext(m_dispatcher, [&] {
|
|
System::Timer(m_dispatcher).sleep(std::chrono::milliseconds(m_config.m_net_config.connection_timeout * 2));
|
|
logger(DEBUGGING) << context << "Back ping timed out" << ip << ":" << port;
|
|
pingContext.interrupt();
|
|
});
|
|
|
|
pingContext.get();
|
|
|
|
if (rsp.status != PING_OK_RESPONSE_STATUS_TEXT || peerId != rsp.peer_id) {
|
|
logger(DEBUGGING) << context << "Back ping invoke wrong response \"" << rsp.status << "\" from" << ip
|
|
<< ":" << port << ", hsh_peer_id=" << peerId << ", rsp.peer_id=" << rsp.peer_id;
|
|
return false;
|
|
}
|
|
} catch (std::exception& e) {
|
|
logger(DEBUGGING) << context << "Back ping connection to " << ip << ":" << port << " failed: " << e.what();
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------------
|
|
int NodeServer::handle_timed_sync(int command, COMMAND_TIMED_SYNC::request& arg, COMMAND_TIMED_SYNC::response& rsp, P2pConnectionContext& context)
|
|
{
|
|
if(!m_payload_handler.process_payload_sync_data(arg.payload_data, context, false)) {
|
|
logger(Logging::ERROR) << context << "Failed to process_payload_sync_data(), dropping connection";
|
|
context.m_state = CryptoNoteConnectionContext::state_shutdown;
|
|
return 1;
|
|
}
|
|
|
|
//fill response
|
|
rsp.local_time = time(NULL);
|
|
m_peerlist.get_peerlist_head(rsp.local_peerlist);
|
|
m_payload_handler.get_payload_sync_data(rsp.payload_data);
|
|
logger(Logging::TRACE) << context << "COMMAND_TIMED_SYNC";
|
|
return 1;
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
int NodeServer::handle_handshake(int command, COMMAND_HANDSHAKE::request& arg, COMMAND_HANDSHAKE::response& rsp, P2pConnectionContext& context)
|
|
{
|
|
context.version = arg.node_data.version;
|
|
|
|
if (arg.node_data.network_id != m_network_id) {
|
|
logger(Logging::INFO) << context << "WRONG NETWORK AGENT CONNECTED! id=" << arg.node_data.network_id;
|
|
context.m_state = CryptoNoteConnectionContext::state_shutdown;
|
|
return 1;
|
|
}
|
|
|
|
if(!context.m_is_income) {
|
|
logger(Logging::ERROR) << context << "COMMAND_HANDSHAKE came not from incoming connection";
|
|
context.m_state = CryptoNoteConnectionContext::state_shutdown;
|
|
return 1;
|
|
}
|
|
|
|
if(context.peerId) {
|
|
logger(Logging::ERROR) << context << "COMMAND_HANDSHAKE came, but seems that connection already have associated peer_id (double COMMAND_HANDSHAKE?)";
|
|
context.m_state = CryptoNoteConnectionContext::state_shutdown;
|
|
return 1;
|
|
}
|
|
|
|
if(!m_payload_handler.process_payload_sync_data(arg.payload_data, context, true)) {
|
|
logger(Logging::ERROR) << context << "COMMAND_HANDSHAKE came, but process_payload_sync_data returned false, dropping connection.";
|
|
context.m_state = CryptoNoteConnectionContext::state_shutdown;
|
|
return 1;
|
|
}
|
|
//associate peer_id with this connection
|
|
context.peerId = arg.node_data.peer_id;
|
|
|
|
if(arg.node_data.peer_id != m_config.m_peer_id && arg.node_data.my_port) {
|
|
PeerIdType peer_id_l = arg.node_data.peer_id;
|
|
uint32_t port_l = arg.node_data.my_port;
|
|
|
|
if (try_ping(arg.node_data, context)) {
|
|
//called only(!) if success pinged, update local peerlist
|
|
PeerlistEntry pe;
|
|
pe.adr.ip = context.m_remote_ip;
|
|
pe.adr.port = port_l;
|
|
pe.last_seen = time(nullptr);
|
|
pe.id = peer_id_l;
|
|
m_peerlist.append_with_peer_white(pe);
|
|
|
|
logger(Logging::TRACE) << context << "BACK PING SUCCESS, " << Common::ipAddressToString(context.m_remote_ip) << ":" << port_l << " added to whitelist";
|
|
}
|
|
}
|
|
|
|
//fill response
|
|
m_peerlist.get_peerlist_head(rsp.local_peerlist);
|
|
get_local_node_data(rsp.node_data);
|
|
m_payload_handler.get_payload_sync_data(rsp.payload_data);
|
|
|
|
logger(Logging::DEBUGGING, Logging::BRIGHT_GREEN) << "COMMAND_HANDSHAKE";
|
|
return 1;
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
int NodeServer::handle_ping(int command, COMMAND_PING::request& arg, COMMAND_PING::response& rsp, P2pConnectionContext& context)
|
|
{
|
|
logger(Logging::TRACE) << context << "COMMAND_PING";
|
|
rsp.status = PING_OK_RESPONSE_STATUS_TEXT;
|
|
rsp.peer_id = m_config.m_peer_id;
|
|
return 1;
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
bool NodeServer::log_peerlist()
|
|
{
|
|
std::list<PeerlistEntry> pl_wite;
|
|
std::list<PeerlistEntry> pl_gray;
|
|
m_peerlist.get_peerlist_full(pl_gray, pl_wite);
|
|
logger(INFO) << ENDL << "Peerlist white:" << ENDL << print_peerlist_to_string(pl_wite) << ENDL << "Peerlist gray:" << ENDL << print_peerlist_to_string(pl_gray) ;
|
|
return true;
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
bool NodeServer::log_connections() {
|
|
logger(INFO) << "Connections: \r\n" << print_connections_container() ;
|
|
return true;
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
std::string NodeServer::print_connections_container() {
|
|
|
|
std::stringstream ss;
|
|
|
|
for (const auto& cntxt : m_connections) {
|
|
ss << Common::ipAddressToString(cntxt.second.m_remote_ip) << ":" << cntxt.second.m_remote_port
|
|
<< " \t\tpeer_id " << cntxt.second.peerId
|
|
<< " \t\tconn_id " << cntxt.second.m_connection_id << (cntxt.second.m_is_income ? " INC" : " OUT")
|
|
<< std::endl;
|
|
}
|
|
|
|
return ss.str();
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
void NodeServer::on_connection_new(P2pConnectionContext& context)
|
|
{
|
|
logger(TRACE) << context << "NEW CONNECTION";
|
|
m_payload_handler.onConnectionOpened(context);
|
|
}
|
|
//-----------------------------------------------------------------------------------
|
|
|
|
void NodeServer::on_connection_close(P2pConnectionContext& context)
|
|
{
|
|
logger(TRACE) << context << "CLOSE CONNECTION";
|
|
m_payload_handler.onConnectionClosed(context);
|
|
}
|
|
|
|
bool NodeServer::is_priority_node(const NetworkAddress& na)
|
|
{
|
|
return
|
|
(std::find(m_priority_peers.begin(), m_priority_peers.end(), na) != m_priority_peers.end()) ||
|
|
(std::find(m_exclusive_peers.begin(), m_exclusive_peers.end(), na) != m_exclusive_peers.end());
|
|
}
|
|
|
|
bool NodeServer::connect_to_peerlist(const std::vector<NetworkAddress>& peers)
|
|
{
|
|
for(const auto& na: peers) {
|
|
if (!is_addr_connected(na)) {
|
|
try_to_connect_and_handshake_with_new_peer(na);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool NodeServer::parse_peers_and_add_to_container(const boost::program_options::variables_map& vm,
|
|
const command_line::arg_descriptor<std::vector<std::string> > & arg, std::vector<NetworkAddress>& container)
|
|
{
|
|
std::vector<std::string> perrs = command_line::get_arg(vm, arg);
|
|
|
|
for(const std::string& pr_str: perrs) {
|
|
NetworkAddress na;
|
|
if (!parse_peer_from_string(na, pr_str)) {
|
|
logger(ERROR, BRIGHT_RED) << "Failed to parse address from string: " << pr_str;
|
|
return false;
|
|
}
|
|
container.push_back(na);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void NodeServer::acceptLoop() {
|
|
for (;;) {
|
|
try {
|
|
P2pConnectionContext ctx(m_dispatcher, logger.getLogger(), m_listener.accept());
|
|
ctx.m_connection_id = boost::uuids::random_generator()();
|
|
ctx.m_is_income = true;
|
|
ctx.m_started = time(nullptr);
|
|
|
|
auto addressAndPort = ctx.connection.getPeerAddressAndPort();
|
|
ctx.m_remote_ip = hostToNetwork(addressAndPort.first.getValue());
|
|
ctx.m_remote_port = addressAndPort.second;
|
|
|
|
auto iter = m_connections.emplace(ctx.m_connection_id, std::move(ctx)).first;
|
|
const boost::uuids::uuid& connectionId = iter->first;
|
|
P2pConnectionContext& connection = iter->second;
|
|
|
|
m_workingContextGroup.spawn(std::bind(&NodeServer::connectionHandler, this, std::cref(connectionId), std::ref(connection)));
|
|
} catch (System::InterruptedException&) {
|
|
logger(DEBUGGING) << "acceptLoop() is interrupted";
|
|
break;
|
|
} catch (const std::exception& e) {
|
|
logger(WARNING) << "Exception in acceptLoop: " << e.what();
|
|
}
|
|
}
|
|
|
|
logger(DEBUGGING) << "acceptLoop finished";
|
|
}
|
|
|
|
void NodeServer::onIdle() {
|
|
logger(DEBUGGING) << "onIdle started";
|
|
|
|
try {
|
|
while (!m_stop) {
|
|
idle_worker();
|
|
m_payload_handler.on_idle();
|
|
m_idleTimer.sleep(std::chrono::seconds(1));
|
|
}
|
|
} catch (System::InterruptedException&) {
|
|
logger(DEBUGGING) << "onIdle() is interrupted";
|
|
} catch (std::exception& e) {
|
|
logger(WARNING) << "Exception in onIdle: " << e.what();
|
|
}
|
|
|
|
logger(DEBUGGING) << "onIdle finished";
|
|
}
|
|
|
|
void NodeServer::timeoutLoop() {
|
|
try {
|
|
while (!m_stop) {
|
|
m_timeoutTimer.sleep(std::chrono::seconds(10));
|
|
auto now = P2pConnectionContext::Clock::now();
|
|
|
|
for (auto& kv : m_connections) {
|
|
auto& ctx = kv.second;
|
|
if (ctx.writeDuration(now) > P2P_DEFAULT_INVOKE_TIMEOUT) {
|
|
logger(WARNING) << ctx << "write operation timed out, stopping connection";
|
|
ctx.interrupt();
|
|
}
|
|
}
|
|
}
|
|
} catch (System::InterruptedException&) {
|
|
logger(DEBUGGING) << "timeoutLoop() is interrupted";
|
|
} catch (std::exception& e) {
|
|
logger(WARNING) << "Exception in timeoutLoop: " << e.what();
|
|
}
|
|
}
|
|
|
|
void NodeServer::timedSyncLoop() {
|
|
try {
|
|
for (;;) {
|
|
m_timedSyncTimer.sleep(std::chrono::seconds(P2P_DEFAULT_HANDSHAKE_INTERVAL));
|
|
timedSync();
|
|
}
|
|
} catch (System::InterruptedException&) {
|
|
logger(DEBUGGING) << "timedSyncLoop() is interrupted";
|
|
} catch (std::exception& e) {
|
|
logger(WARNING) << "Exception in timedSyncLoop: " << e.what();
|
|
}
|
|
|
|
logger(DEBUGGING) << "timedSyncLoop finished";
|
|
}
|
|
|
|
void NodeServer::connectionHandler(const boost::uuids::uuid& connectionId, P2pConnectionContext& ctx) {
|
|
// This inner context is necessary in order to stop connection handler at any moment
|
|
System::Context<> context(m_dispatcher, [this, &connectionId, &ctx] {
|
|
System::Context<> writeContext(m_dispatcher, std::bind(&NodeServer::writeHandler, this, std::ref(ctx)));
|
|
|
|
try {
|
|
on_connection_new(ctx);
|
|
|
|
LevinProtocol proto(ctx.connection);
|
|
LevinProtocol::Command cmd;
|
|
|
|
for (;;) {
|
|
if (ctx.m_state == CryptoNoteConnectionContext::state_sync_required) {
|
|
ctx.m_state = CryptoNoteConnectionContext::state_synchronizing;
|
|
m_payload_handler.start_sync(ctx);
|
|
} else if (ctx.m_state == CryptoNoteConnectionContext::state_pool_sync_required) {
|
|
ctx.m_state = CryptoNoteConnectionContext::state_normal;
|
|
m_payload_handler.requestMissingPoolTransactions(ctx);
|
|
}
|
|
|
|
if (!proto.readCommand(cmd)) {
|
|
break;
|
|
}
|
|
|
|
BinaryArray response;
|
|
bool handled = false;
|
|
auto retcode = handleCommand(cmd, response, ctx, handled);
|
|
|
|
// send response
|
|
if (cmd.needReply()) {
|
|
if (!handled) {
|
|
retcode = static_cast<int32_t>(LevinError::ERROR_CONNECTION_HANDLER_NOT_DEFINED);
|
|
response.clear();
|
|
}
|
|
|
|
ctx.pushMessage(P2pMessage(P2pMessage::REPLY, cmd.command, std::move(response), retcode));
|
|
}
|
|
|
|
if (ctx.m_state == CryptoNoteConnectionContext::state_shutdown) {
|
|
break;
|
|
}
|
|
}
|
|
} catch (System::InterruptedException&) {
|
|
logger(DEBUGGING) << ctx << "connectionHandler() inner context is interrupted";
|
|
} catch (std::exception& e) {
|
|
logger(WARNING) << ctx << "Exception in connectionHandler: " << e.what();
|
|
}
|
|
|
|
ctx.interrupt();
|
|
writeContext.interrupt();
|
|
writeContext.get();
|
|
|
|
on_connection_close(ctx);
|
|
m_connections.erase(connectionId);
|
|
});
|
|
|
|
ctx.context = &context;
|
|
|
|
try {
|
|
context.get();
|
|
} catch (System::InterruptedException&) {
|
|
logger(DEBUGGING) << "connectionHandler() is interrupted";
|
|
}
|
|
}
|
|
|
|
void NodeServer::writeHandler(P2pConnectionContext& ctx) {
|
|
logger(DEBUGGING) << ctx << "writeHandler started";
|
|
|
|
try {
|
|
LevinProtocol proto(ctx.connection);
|
|
|
|
for (;;) {
|
|
auto msgs = ctx.popBuffer();
|
|
if (msgs.empty()) {
|
|
break;
|
|
}
|
|
|
|
for (const auto& msg : msgs) {
|
|
logger(DEBUGGING) << ctx << "msg " << msg.type << ':' << msg.command;
|
|
switch (msg.type) {
|
|
case P2pMessage::COMMAND:
|
|
proto.sendMessage(msg.command, msg.buffer, true);
|
|
break;
|
|
case P2pMessage::NOTIFY:
|
|
proto.sendMessage(msg.command, msg.buffer, false);
|
|
break;
|
|
case P2pMessage::REPLY:
|
|
proto.sendReply(msg.command, msg.buffer, msg.returnCode);
|
|
break;
|
|
default:
|
|
assert(false);
|
|
}
|
|
}
|
|
}
|
|
} catch (System::InterruptedException&) {
|
|
// connection stopped
|
|
logger(DEBUGGING) << ctx << "writeHandler() is interrupted";
|
|
} catch (std::exception& e) {
|
|
logger(WARNING) << ctx << "error during write: " << e.what();
|
|
ctx.interrupt(); // stop connection on write error
|
|
}
|
|
|
|
logger(DEBUGGING) << ctx << "writeHandler finished";
|
|
}
|
|
}
|