/// @file /// @author rfree (current maintainer/user in monero.cc project - most of code is from CryptoNote) /// @brief This is the original cryptonote protocol network-events handler, modified by us // Copyright (c) 2014-2018, 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 // (may contain code and/or modifications by other developers) // developer rfree: this code is caller of our new network code, and is modded; e.g. for rate limiting #include #include #include #include "cryptonote_basic/cryptonote_format_utils.h" #include "profile_tools.h" #include "net/network_throttle-detail.hpp" #undef MONERO_DEFAULT_LOG_CATEGORY #define MONERO_DEFAULT_LOG_CATEGORY "net.cn" #define MLOG_P2P_MESSAGE(x) MCINFO("net.p2p.msg", context << x) #define BLOCK_QUEUE_NBLOCKS_THRESHOLD 10 // chunks of N blocks #define BLOCK_QUEUE_SIZE_THRESHOLD (100*1024*1024) // MB #define REQUEST_NEXT_SCHEDULED_SPAN_THRESHOLD (5 * 1000000) // microseconds #define IDLE_PEER_KICK_TIME (600 * 1000000) // microseconds #define PASSIVE_PEER_KICK_TIME (60 * 1000000) // microseconds namespace cryptonote { //----------------------------------------------------------------------------------------------------------------------- template t_cryptonote_protocol_handler::t_cryptonote_protocol_handler(t_core& rcore, nodetool::i_p2p_endpoint* p_net_layout, bool offline):m_core(rcore), m_p2p(p_net_layout), m_syncronized_connections_count(0), m_synchronized(offline), m_stopping(false) { if(!m_p2p) m_p2p = &m_p2p_stub; } //----------------------------------------------------------------------------------------------------------------------- template bool t_cryptonote_protocol_handler::init(const boost::program_options::variables_map& vm) { return true; } //------------------------------------------------------------------------------------------------------------------------ template bool t_cryptonote_protocol_handler::deinit() { return true; } //------------------------------------------------------------------------------------------------------------------------ template void t_cryptonote_protocol_handler::set_p2p_endpoint(nodetool::i_p2p_endpoint* p2p) { if(p2p) m_p2p = p2p; else m_p2p = &m_p2p_stub; } //------------------------------------------------------------------------------------------------------------------------ template bool t_cryptonote_protocol_handler::on_callback(cryptonote_connection_context& context) { LOG_PRINT_CCONTEXT_L2("callback fired"); CHECK_AND_ASSERT_MES_CC( context.m_callback_request_count > 0, false, "false callback fired, but context.m_callback_request_count=" << context.m_callback_request_count); --context.m_callback_request_count; if(context.m_state == cryptonote_connection_context::state_synchronizing) { NOTIFY_REQUEST_CHAIN::request r = boost::value_initialized(); m_core.get_short_chain_history(r.block_ids); LOG_PRINT_CCONTEXT_L2("-->>NOTIFY_REQUEST_CHAIN: m_block_ids.size()=" << r.block_ids.size() ); post_notify(r, context); } else if(context.m_state == cryptonote_connection_context::state_standby) { context.m_state = cryptonote_connection_context::state_synchronizing; try_add_next_blocks(context); } return true; } //------------------------------------------------------------------------------------------------------------------------ template bool t_cryptonote_protocol_handler::get_stat_info(core_stat_info& stat_inf) { return m_core.get_stat_info(stat_inf); } //------------------------------------------------------------------------------------------------------------------------ template void t_cryptonote_protocol_handler::log_connections() { std::stringstream ss; ss.precision(1); double down_sum = 0.0; double down_curr_sum = 0.0; double up_sum = 0.0; double up_curr_sum = 0.0; ss << std::setw(30) << std::left << "Remote Host" << std::setw(20) << "Peer id" << std::setw(20) << "Support Flags" << std::setw(30) << "Recv/Sent (inactive,sec)" << std::setw(25) << "State" << std::setw(20) << "Livetime(sec)" << std::setw(12) << "Down (kB/s)" << std::setw(14) << "Down(now)" << std::setw(10) << "Up (kB/s)" << std::setw(13) << "Up(now)" << ENDL; m_p2p->for_each_connection([&](const connection_context& cntxt, nodetool::peerid_type peer_id, uint32_t support_flags) { bool local_ip = cntxt.m_remote_address.is_local(); auto connection_time = time(NULL) - cntxt.m_started; ss << std::setw(30) << std::left << std::string(cntxt.m_is_income ? " [INC]":"[OUT]") + cntxt.m_remote_address.str() << std::setw(20) << std::hex << peer_id << std::setw(20) << std::hex << support_flags << std::setw(30) << std::to_string(cntxt.m_recv_cnt)+ "(" + std::to_string(time(NULL) - cntxt.m_last_recv) + ")" + "/" + std::to_string(cntxt.m_send_cnt) + "(" + std::to_string(time(NULL) - cntxt.m_last_send) + ")" << std::setw(25) << get_protocol_state_string(cntxt.m_state) << std::setw(20) << std::to_string(time(NULL) - cntxt.m_started) << std::setw(12) << std::fixed << (connection_time == 0 ? 0.0 : cntxt.m_recv_cnt / connection_time / 1024) << std::setw(14) << std::fixed << cntxt.m_current_speed_down / 1024 << std::setw(10) << std::fixed << (connection_time == 0 ? 0.0 : cntxt.m_send_cnt / connection_time / 1024) << std::setw(13) << std::fixed << cntxt.m_current_speed_up / 1024 << (local_ip ? "[LAN]" : "") << std::left << (cntxt.m_remote_address.is_loopback() ? "[LOCALHOST]" : "") // 127.0.0.1 << ENDL; if (connection_time > 1) { down_sum += (cntxt.m_recv_cnt / connection_time / 1024); up_sum += (cntxt.m_send_cnt / connection_time / 1024); } down_curr_sum += (cntxt.m_current_speed_down / 1024); up_curr_sum += (cntxt.m_current_speed_up / 1024); return true; }); ss << ENDL << std::setw(125) << " " << std::setw(12) << down_sum << std::setw(14) << down_curr_sum << std::setw(10) << up_sum << std::setw(13) << up_curr_sum << ENDL; LOG_PRINT_L0("Connections: " << ENDL << ss.str()); } //------------------------------------------------------------------------------------------------------------------------ // Returns a list of connection_info objects describing each open p2p connection //------------------------------------------------------------------------------------------------------------------------ template std::list t_cryptonote_protocol_handler::get_connections() { std::list connections; m_p2p->for_each_connection([&](const connection_context& cntxt, nodetool::peerid_type peer_id, uint32_t support_flags) { connection_info cnx; auto timestamp = time(NULL); cnx.incoming = cntxt.m_is_income ? true : false; cnx.address = cntxt.m_remote_address.str(); cnx.host = cntxt.m_remote_address.host_str(); cnx.ip = ""; cnx.port = ""; if (cntxt.m_remote_address.get_type_id() == epee::net_utils::ipv4_network_address::ID) { cnx.ip = cnx.host; cnx.port = std::to_string(cntxt.m_remote_address.as().port()); } std::stringstream peer_id_str; peer_id_str << std::hex << std::setw(16) << peer_id; peer_id_str >> cnx.peer_id; cnx.support_flags = support_flags; cnx.recv_count = cntxt.m_recv_cnt; cnx.recv_idle_time = timestamp - std::max(cntxt.m_started, cntxt.m_last_recv); cnx.send_count = cntxt.m_send_cnt; cnx.send_idle_time = timestamp - std::max(cntxt.m_started, cntxt.m_last_send); cnx.state = get_protocol_state_string(cntxt.m_state); cnx.live_time = timestamp - cntxt.m_started; cnx.localhost = cntxt.m_remote_address.is_loopback(); cnx.local_ip = cntxt.m_remote_address.is_local(); auto connection_time = time(NULL) - cntxt.m_started; if (connection_time == 0) { cnx.avg_download = 0; cnx.avg_upload = 0; } else { cnx.avg_download = cntxt.m_recv_cnt / connection_time / 1024; cnx.avg_upload = cntxt.m_send_cnt / connection_time / 1024; } cnx.current_download = cntxt.m_current_speed_down / 1024; cnx.current_upload = cntxt.m_current_speed_up / 1024; cnx.connection_id = epee::string_tools::pod_to_hex(cntxt.m_connection_id); cnx.height = cntxt.m_remote_blockchain_height; connections.push_back(cnx); return true; }); return connections; } //------------------------------------------------------------------------------------------------------------------------ template bool t_cryptonote_protocol_handler::process_payload_sync_data(const CORE_SYNC_DATA& hshd, cryptonote_connection_context& context, bool is_inital) { if(context.m_state == cryptonote_connection_context::state_before_handshake && !is_inital) return true; if(context.m_state == cryptonote_connection_context::state_synchronizing) return true; // from v6, if the peer advertises a top block version, reject if it's not what it should be (will only work if no voting) if (hshd.current_height > 0) { const uint8_t version = m_core.get_ideal_hard_fork_version(hshd.current_height - 1); if (version >= 6 && version != hshd.top_version) { if (version < hshd.top_version && version == m_core.get_ideal_hard_fork_version()) MCLOG_RED(el::Level::Warning, "global", context << " peer claims higher version that we think (" << (unsigned)hshd.top_version << " for " << (hshd.current_height - 1) << " instead of " << (unsigned)version << ") - we may be forked from the network and a software upgrade may be needed"); return false; } } context.m_remote_blockchain_height = hshd.current_height; uint64_t target = m_core.get_target_blockchain_height(); if (target == 0) target = m_core.get_current_blockchain_height(); if(m_core.have_block(hshd.top_id)) { context.m_state = cryptonote_connection_context::state_normal; if(is_inital && target == m_core.get_current_blockchain_height()) on_connection_synchronized(); return true; } if (hshd.current_height > target) { /* As I don't know if accessing hshd from core could be a good practice, I prefer pushing target height to the core at the same time it is pushed to the user. Nz. */ m_core.set_target_blockchain_height((hshd.current_height)); int64_t diff = static_cast(hshd.current_height) - static_cast(m_core.get_current_blockchain_height()); uint64_t abs_diff = std::abs(diff); uint64_t max_block_height = std::max(hshd.current_height,m_core.get_current_blockchain_height()); uint64_t last_block_v1 = m_core.get_nettype() == TESTNET ? 624633 : m_core.get_nettype() == MAINNET ? 1009826 : (uint64_t)-1; uint64_t diff_v2 = max_block_height > last_block_v1 ? std::min(abs_diff, max_block_height - last_block_v1) : 0; MCLOG(is_inital ? el::Level::Info : el::Level::Debug, "global", context << "Sync data returned a new top block candidate: " << m_core.get_current_blockchain_height() << " -> " << hshd.current_height << " [Your node is " << abs_diff << " blocks (" << ((abs_diff - diff_v2) / (24 * 60 * 60 / DIFFICULTY_TARGET_V1)) + (diff_v2 / (24 * 60 * 60 / DIFFICULTY_TARGET_V2)) << " days) " << (0 <= diff ? std::string("behind") : std::string("ahead")) << "] " << ENDL << "SYNCHRONIZATION started"); m_core.safesyncmode(false); } LOG_PRINT_L1("Remote blockchain height: " << hshd.current_height << ", id: " << hshd.top_id); context.m_state = cryptonote_connection_context::state_synchronizing; //let the socket to send response to handshake, but request callback, to let send request data after response LOG_PRINT_CCONTEXT_L2("requesting callback"); ++context.m_callback_request_count; m_p2p->request_callback(context); return true; } //------------------------------------------------------------------------------------------------------------------------ template bool t_cryptonote_protocol_handler::get_payload_sync_data(CORE_SYNC_DATA& hshd) { m_core.get_blockchain_top(hshd.current_height, hshd.top_id); hshd.top_version = m_core.get_ideal_hard_fork_version(hshd.current_height); hshd.cumulative_difficulty = m_core.get_block_cumulative_difficulty(hshd.current_height); hshd.current_height +=1; return true; } //------------------------------------------------------------------------------------------------------------------------ template bool t_cryptonote_protocol_handler::get_payload_sync_data(blobdata& data) { CORE_SYNC_DATA hsd = boost::value_initialized(); get_payload_sync_data(hsd); epee::serialization::store_t_to_binary(hsd, data); return true; } //------------------------------------------------------------------------------------------------------------------------ template int t_cryptonote_protocol_handler::handle_notify_new_block(int command, NOTIFY_NEW_BLOCK::request& arg, cryptonote_connection_context& context) { MLOG_P2P_MESSAGE("Received NOTIFY_NEW_BLOCK (" << arg.b.txs.size() << " txes)"); if(context.m_state != cryptonote_connection_context::state_normal) return 1; if(!is_synchronized()) // can happen if a peer connection goes to normal but another thread still hasn't finished adding queued blocks { LOG_DEBUG_CC(context, "Received new block while syncing, ignored"); return 1; } m_core.pause_mine(); std::list blocks; blocks.push_back(arg.b); m_core.prepare_handle_incoming_blocks(blocks); for(auto tx_blob_it = arg.b.txs.begin(); tx_blob_it!=arg.b.txs.end();tx_blob_it++) { cryptonote::tx_verification_context tvc = AUTO_VAL_INIT(tvc); m_core.handle_incoming_tx(*tx_blob_it, tvc, true, true, false); if(tvc.m_verifivation_failed) { LOG_PRINT_CCONTEXT_L1("Block verification failed: transaction verification failed, dropping connection"); drop_connection(context, false, false); m_core.cleanup_handle_incoming_blocks(); m_core.resume_mine(); return 1; } } block_verification_context bvc = boost::value_initialized(); m_core.handle_incoming_block(arg.b.block, bvc); // got block from handle_notify_new_block if (!m_core.cleanup_handle_incoming_blocks(true)) { LOG_PRINT_CCONTEXT_L0("Failure in cleanup_handle_incoming_blocks"); m_core.resume_mine(); return 1; } m_core.resume_mine(); if(bvc.m_verifivation_failed) { LOG_PRINT_CCONTEXT_L0("Block verification failed, dropping connection"); drop_connection(context, true, false); return 1; } if(bvc.m_added_to_main_chain) { //TODO: Add here announce protocol usage relay_block(arg, context); }else if(bvc.m_marked_as_orphaned) { context.m_state = cryptonote_connection_context::state_synchronizing; NOTIFY_REQUEST_CHAIN::request r = boost::value_initialized(); m_core.get_short_chain_history(r.block_ids); LOG_PRINT_CCONTEXT_L2("-->>NOTIFY_REQUEST_CHAIN: m_block_ids.size()=" << r.block_ids.size() ); post_notify(r, context); } return 1; } //------------------------------------------------------------------------------------------------------------------------ template int t_cryptonote_protocol_handler::handle_notify_new_fluffy_block(int command, NOTIFY_NEW_FLUFFY_BLOCK::request& arg, cryptonote_connection_context& context) { MLOG_P2P_MESSAGE("Received NOTIFY_NEW_FLUFFY_BLOCK (height " << arg.current_blockchain_height << ", " << arg.b.txs.size() << " txes)"); if(context.m_state != cryptonote_connection_context::state_normal) return 1; if(!is_synchronized()) // can happen if a peer connection goes to normal but another thread still hasn't finished adding queued blocks { LOG_DEBUG_CC(context, "Received new block while syncing, ignored"); return 1; } m_core.pause_mine(); block new_block; transaction miner_tx; if(parse_and_validate_block_from_blob(arg.b.block, new_block)) { // This is a second notification, we must have asked for some missing tx if(!context.m_requested_objects.empty()) { // What we asked for != to what we received .. if(context.m_requested_objects.size() != arg.b.txs.size()) { LOG_ERROR_CCONTEXT ( "NOTIFY_NEW_FLUFFY_BLOCK -> request/response mismatch, " << "block = " << epee::string_tools::pod_to_hex(get_blob_hash(arg.b.block)) << ", requested = " << context.m_requested_objects.size() << ", received = " << new_block.tx_hashes.size() << ", dropping connection" ); drop_connection(context, false, false); m_core.resume_mine(); return 1; } } std::list have_tx; // Instead of requesting missing transactions by hash like BTC, // we do it by index (thanks to a suggestion from moneromooo) because // we're way cooler .. and also because they're smaller than hashes. // // Also, remember to pepper some whitespace changes around to bother // moneromooo ... only because I <3 him. std::vector need_tx_indices; transaction tx; crypto::hash tx_hash; for(auto& tx_blob: arg.b.txs) { if(parse_and_validate_tx_from_blob(tx_blob, tx)) { try { if(!get_transaction_hash(tx, tx_hash)) { LOG_PRINT_CCONTEXT_L1 ( "NOTIFY_NEW_FLUFFY_BLOCK: get_transaction_hash failed" << ", dropping connection" ); drop_connection(context, false, false); m_core.resume_mine(); return 1; } } catch(...) { LOG_PRINT_CCONTEXT_L1 ( "NOTIFY_NEW_FLUFFY_BLOCK: get_transaction_hash failed" << ", exception thrown" << ", dropping connection" ); drop_connection(context, false, false); m_core.resume_mine(); return 1; } // hijacking m_requested objects in connection context to patch up // a possible DOS vector pointed out by @monero-moo where peers keep // sending (0...n-1) transactions. // If requested objects is not empty, then we must have asked for // some missing transacionts, make sure that they're all there. // // Can I safely re-use this field? I think so, but someone check me! if(!context.m_requested_objects.empty()) { auto req_tx_it = context.m_requested_objects.find(tx_hash); if(req_tx_it == context.m_requested_objects.end()) { LOG_ERROR_CCONTEXT ( "Peer sent wrong transaction (NOTIFY_NEW_FLUFFY_BLOCK): " << "transaction with id = " << tx_hash << " wasn't requested, " << "dropping connection" ); drop_connection(context, false, false); m_core.resume_mine(); return 1; } context.m_requested_objects.erase(req_tx_it); } // we might already have the tx that the peer // sent in our pool, so don't verify again.. if(!m_core.pool_has_tx(tx_hash)) { MDEBUG("Incoming tx " << tx_hash << " not in pool, adding"); cryptonote::tx_verification_context tvc = AUTO_VAL_INIT(tvc); if(!m_core.handle_incoming_tx(tx_blob, tvc, true, true, false) || tvc.m_verifivation_failed) { LOG_PRINT_CCONTEXT_L1("Block verification failed: transaction verification failed, dropping connection"); drop_connection(context, false, false); m_core.resume_mine(); return 1; } // // future todo: // tx should only not be added to pool if verification failed, but // maybe in the future could not be added for other reasons // according to monero-moo so keep track of these separately .. // } } else { LOG_ERROR_CCONTEXT ( "sent wrong tx: failed to parse and validate transaction: " << epee::string_tools::buff_to_hex_nodelimer(tx_blob) << ", dropping connection" ); drop_connection(context, false, false); m_core.resume_mine(); return 1; } } // The initial size equality check could have been fooled if the sender // gave us the number of transactions we asked for, but not the right // ones. This check make sure the transactions we asked for were the // ones we received. if(context.m_requested_objects.size()) { MERROR ( "NOTIFY_NEW_FLUFFY_BLOCK: peer sent the number of transaction requested" << ", but not the actual transactions requested" << ", context.m_requested_objects.size() = " << context.m_requested_objects.size() << ", dropping connection" ); drop_connection(context, false, false); m_core.resume_mine(); return 1; } size_t tx_idx = 0; for(auto& tx_hash: new_block.tx_hashes) { cryptonote::blobdata txblob; if(m_core.get_pool_transaction(tx_hash, txblob)) { have_tx.push_back(txblob); } else { std::vector tx_ids; std::list txes; std::list missing; tx_ids.push_back(tx_hash); if (m_core.get_transactions(tx_ids, txes, missing) && missing.empty()) { if (txes.size() == 1) { have_tx.push_back(tx_to_blob(txes.front())); } else { MERROR("1 tx requested, none not found, but " << txes.size() << " returned"); m_core.resume_mine(); return 1; } } else { MDEBUG("Tx " << tx_hash << " not found in pool"); need_tx_indices.push_back(tx_idx); } } ++tx_idx; } if(!need_tx_indices.empty()) // drats, we don't have everything.. { // request non-mempool txs MDEBUG("We are missing " << need_tx_indices.size() << " txes for this fluffy block"); for (auto txidx: need_tx_indices) MDEBUG(" tx " << new_block.tx_hashes[txidx]); NOTIFY_REQUEST_FLUFFY_MISSING_TX::request missing_tx_req; missing_tx_req.block_hash = get_block_hash(new_block); missing_tx_req.current_blockchain_height = arg.current_blockchain_height; missing_tx_req.missing_tx_indices = std::move(need_tx_indices); m_core.resume_mine(); post_notify(missing_tx_req, context); } else // whoo-hoo we've got em all .. { MDEBUG("We have all needed txes for this fluffy block"); block_complete_entry b; b.block = arg.b.block; b.txs = have_tx; std::list blocks; blocks.push_back(b); m_core.prepare_handle_incoming_blocks(blocks); block_verification_context bvc = boost::value_initialized(); m_core.handle_incoming_block(arg.b.block, bvc); // got block from handle_notify_new_block if (!m_core.cleanup_handle_incoming_blocks(true)) { LOG_PRINT_CCONTEXT_L0("Failure in cleanup_handle_incoming_blocks"); m_core.resume_mine(); return 1; } m_core.resume_mine(); if( bvc.m_verifivation_failed ) { LOG_PRINT_CCONTEXT_L0("Block verification failed, dropping connection"); drop_connection(context, true, false); return 1; } if( bvc.m_added_to_main_chain ) { //TODO: Add here announce protocol usage NOTIFY_NEW_BLOCK::request reg_arg = AUTO_VAL_INIT(reg_arg); reg_arg.current_blockchain_height = arg.current_blockchain_height; reg_arg.b = b; relay_block(reg_arg, context); } else if( bvc.m_marked_as_orphaned ) { context.m_state = cryptonote_connection_context::state_synchronizing; NOTIFY_REQUEST_CHAIN::request r = boost::value_initialized(); m_core.get_short_chain_history(r.block_ids); LOG_PRINT_CCONTEXT_L2("-->>NOTIFY_REQUEST_CHAIN: m_block_ids.size()=" << r.block_ids.size() ); post_notify(r, context); } } } else { LOG_ERROR_CCONTEXT ( "sent wrong block: failed to parse and validate block: " << epee::string_tools::buff_to_hex_nodelimer(arg.b.block) << ", dropping connection" ); m_core.resume_mine(); drop_connection(context, false, false); return 1; } return 1; } //------------------------------------------------------------------------------------------------------------------------ template int t_cryptonote_protocol_handler::handle_request_fluffy_missing_tx(int command, NOTIFY_REQUEST_FLUFFY_MISSING_TX::request& arg, cryptonote_connection_context& context) { MLOG_P2P_MESSAGE("Received NOTIFY_REQUEST_FLUFFY_MISSING_TX (" << arg.missing_tx_indices.size() << " txes), block hash " << arg.block_hash); std::list> local_blocks; std::list local_txs; block b; if (!m_core.get_block_by_hash(arg.block_hash, b)) { LOG_ERROR_CCONTEXT("failed to find block: " << arg.block_hash << ", dropping connection"); drop_connection(context, false, false); return 1; } std::vector txids; NOTIFY_NEW_FLUFFY_BLOCK::request fluffy_response; fluffy_response.b.block = t_serializable_object_to_blob(b); fluffy_response.current_blockchain_height = arg.current_blockchain_height; for(auto& tx_idx: arg.missing_tx_indices) { if(tx_idx < b.tx_hashes.size()) { MDEBUG(" tx " << b.tx_hashes[tx_idx]); txids.push_back(b.tx_hashes[tx_idx]); } else { LOG_ERROR_CCONTEXT ( "Failed to handle request NOTIFY_REQUEST_FLUFFY_MISSING_TX" << ", request is asking for a tx whose index is out of bounds " << ", tx index = " << tx_idx << ", block tx count " << b.tx_hashes.size() << ", block_height = " << arg.current_blockchain_height << ", dropping connection" ); drop_connection(context, false, false); return 1; } } std::list txs; std::list missed; if (!m_core.get_transactions(txids, txs, missed)) { LOG_ERROR_CCONTEXT("Failed to handle request NOTIFY_REQUEST_FLUFFY_MISSING_TX, " << "failed to get requested transactions"); drop_connection(context, false, false); return 1; } if (!missed.empty() || txs.size() != txids.size()) { LOG_ERROR_CCONTEXT("Failed to handle request NOTIFY_REQUEST_FLUFFY_MISSING_TX, " << missed.size() << " requested transactions not found" << ", dropping connection"); drop_connection(context, false, false); return 1; } for(auto& tx: txs) { fluffy_response.b.txs.push_back(t_serializable_object_to_blob(tx)); } LOG_PRINT_CCONTEXT_L2 ( "-->>NOTIFY_RESPONSE_FLUFFY_MISSING_TX: " << ", txs.size()=" << fluffy_response.b.txs.size() << ", rsp.current_blockchain_height=" << fluffy_response.current_blockchain_height ); post_notify(fluffy_response, context); return 1; } //------------------------------------------------------------------------------------------------------------------------ template int t_cryptonote_protocol_handler::handle_notify_new_transactions(int command, NOTIFY_NEW_TRANSACTIONS::request& arg, cryptonote_connection_context& context) { MLOG_P2P_MESSAGE("Received NOTIFY_NEW_TRANSACTIONS (" << arg.txs.size() << " txes)"); if(context.m_state != cryptonote_connection_context::state_normal) return 1; // while syncing, core will lock for a long time, so we ignore // those txes as they aren't really needed anyway, and avoid a // long block before replying if(!is_synchronized()) { LOG_DEBUG_CC(context, "Received new tx while syncing, ignored"); return 1; } for(auto tx_blob_it = arg.txs.begin(); tx_blob_it!=arg.txs.end();) { cryptonote::tx_verification_context tvc = AUTO_VAL_INIT(tvc); m_core.handle_incoming_tx(*tx_blob_it, tvc, false, true, false); if(tvc.m_verifivation_failed) { LOG_PRINT_CCONTEXT_L1("Tx verification failed, dropping connection"); drop_connection(context, false, false); return 1; } if(tvc.m_should_be_relayed) ++tx_blob_it; else arg.txs.erase(tx_blob_it++); } if(arg.txs.size()) { //TODO: add announce usage here relay_transactions(arg, context); } return 1; } //------------------------------------------------------------------------------------------------------------------------ template int t_cryptonote_protocol_handler::handle_request_get_objects(int command, NOTIFY_REQUEST_GET_OBJECTS::request& arg, cryptonote_connection_context& context) { MLOG_P2P_MESSAGE("Received NOTIFY_REQUEST_GET_OBJECTS (" << arg.blocks.size() << " blocks, " << arg.txs.size() << " txes)"); NOTIFY_RESPONSE_GET_OBJECTS::request rsp; if(!m_core.handle_get_objects(arg, rsp, context)) { LOG_ERROR_CCONTEXT("failed to handle request NOTIFY_REQUEST_GET_OBJECTS, dropping connection"); drop_connection(context, false, false); return 1; } LOG_PRINT_CCONTEXT_L2("-->>NOTIFY_RESPONSE_GET_OBJECTS: blocks.size()=" << rsp.blocks.size() << ", txs.size()=" << rsp.txs.size() << ", rsp.m_current_blockchain_height=" << rsp.current_blockchain_height << ", missed_ids.size()=" << rsp.missed_ids.size()); post_notify(rsp, context); //handler_response_blocks_now(sizeof(rsp)); // XXX //handler_response_blocks_now(200); return 1; } //------------------------------------------------------------------------------------------------------------------------ template double t_cryptonote_protocol_handler::get_avg_block_size() { CRITICAL_REGION_LOCAL(m_buffer_mutex); if (m_avg_buffer.empty()) { MWARNING("m_avg_buffer.size() == 0"); return 500; } double avg = 0; for (const auto &element : m_avg_buffer) avg += element; return avg / m_avg_buffer.size(); } template int t_cryptonote_protocol_handler::handle_response_get_objects(int command, NOTIFY_RESPONSE_GET_OBJECTS::request& arg, cryptonote_connection_context& context) { MLOG_P2P_MESSAGE("Received NOTIFY_RESPONSE_GET_OBJECTS (" << arg.blocks.size() << " blocks, " << arg.txs.size() << " txes)"); // calculate size of request size_t size = 0; for (const auto &element : arg.txs) size += element.size(); size_t blocks_size = 0; for (const auto &element : arg.blocks) { blocks_size += element.block.size(); for (const auto &tx : element.txs) blocks_size += tx.size(); } size += blocks_size; for (const auto &element : arg.missed_ids) size += sizeof(element.data); size += sizeof(arg.current_blockchain_height); { CRITICAL_REGION_LOCAL(m_buffer_mutex); m_avg_buffer.push_back(size); } MDEBUG(context << " downloaded " << size << " bytes worth of blocks"); /*using namespace boost::chrono; auto point = steady_clock::now(); auto time_from_epoh = point.time_since_epoch(); auto sec = duration_cast< seconds >( time_from_epoh ).count();*/ //epee::net_utils::network_throttle_manager::get_global_throttle_inreq().logger_handle_net("log/dr-monero/net/req-all.data", sec, get_avg_block_size()); if(context.m_last_response_height > arg.current_blockchain_height) { LOG_ERROR_CCONTEXT("sent wrong NOTIFY_HAVE_OBJECTS: arg.m_current_blockchain_height=" << arg.current_blockchain_height << " < m_last_response_height=" << context.m_last_response_height << ", dropping connection"); drop_connection(context, false, false); return 1; } context.m_remote_blockchain_height = arg.current_blockchain_height; if (context.m_remote_blockchain_height > m_core.get_target_blockchain_height()) m_core.set_target_blockchain_height(context.m_remote_blockchain_height); std::vector block_hashes; block_hashes.reserve(arg.blocks.size()); const boost::posix_time::ptime now = boost::posix_time::microsec_clock::universal_time(); uint64_t start_height = std::numeric_limits::max(); cryptonote::block b; for(const block_complete_entry& block_entry: arg.blocks) { if (m_stopping) { return 1; } if(!parse_and_validate_block_from_blob(block_entry.block, b)) { LOG_ERROR_CCONTEXT("sent wrong block: failed to parse and validate block: " << epee::string_tools::buff_to_hex_nodelimer(block_entry.block) << ", dropping connection"); drop_connection(context, false, false); return 1; } if (b.miner_tx.vin.size() != 1 || b.miner_tx.vin.front().type() != typeid(txin_gen)) { LOG_ERROR_CCONTEXT("sent wrong block: block: miner tx does not have exactly one txin_gen input" << epee::string_tools::buff_to_hex_nodelimer(block_entry.block) << ", dropping connection"); drop_connection(context, false, false); return 1; } if (start_height == std::numeric_limits::max()) start_height = boost::get(b.miner_tx.vin[0]).height; const crypto::hash block_hash = get_block_hash(b); auto req_it = context.m_requested_objects.find(block_hash); if(req_it == context.m_requested_objects.end()) { LOG_ERROR_CCONTEXT("sent wrong NOTIFY_RESPONSE_GET_OBJECTS: block with id=" << epee::string_tools::pod_to_hex(get_blob_hash(block_entry.block)) << " wasn't requested, dropping connection"); drop_connection(context, false, false); return 1; } if(b.tx_hashes.size() != block_entry.txs.size()) { LOG_ERROR_CCONTEXT("sent wrong NOTIFY_RESPONSE_GET_OBJECTS: block with id=" << epee::string_tools::pod_to_hex(get_blob_hash(block_entry.block)) << ", tx_hashes.size()=" << b.tx_hashes.size() << " mismatch with block_complete_entry.m_txs.size()=" << block_entry.txs.size() << ", dropping connection"); drop_connection(context, false, false); return 1; } context.m_requested_objects.erase(req_it); block_hashes.push_back(block_hash); } if(context.m_requested_objects.size()) { MERROR("returned not all requested objects (context.m_requested_objects.size()=" << context.m_requested_objects.size() << "), dropping connection"); drop_connection(context, false, false); return 1; } // get the last parsed block, which should be the highest one const crypto::hash last_block_hash = cryptonote::get_block_hash(b); if(m_core.have_block(last_block_hash)) { const uint64_t subchain_height = start_height + arg.blocks.size(); LOG_DEBUG_CC(context, "These are old blocks, ignoring: blocks " << start_height << " - " << (subchain_height-1) << ", blockchain height " << m_core.get_current_blockchain_height()); m_block_queue.remove_spans(context.m_connection_id, start_height); goto skip; } { MLOG_YELLOW(el::Level::Debug, context << " Got NEW BLOCKS inside of " << __FUNCTION__ << ": size: " << arg.blocks.size() << ", blocks: " << start_height << " - " << (start_height + arg.blocks.size() - 1)); // add that new span to the block queue const boost::posix_time::time_duration dt = now - context.m_last_request_time; const float rate = size * 1e6 / (dt.total_microseconds() + 1); MDEBUG(context << " adding span: " << arg.blocks.size() << " at height " << start_height << ", " << dt.total_microseconds()/1e6 << " seconds, " << (rate/1e3) << " kB/s, size now " << (m_block_queue.get_data_size() + blocks_size) / 1048576.f << " MB"); m_block_queue.add_blocks(start_height, arg.blocks, context.m_connection_id, rate, blocks_size); context.m_last_known_hash = last_block_hash; if (!m_core.get_test_drop_download() || !m_core.get_test_drop_download_height()) { // DISCARD BLOCKS for testing return 1; } } skip: try_add_next_blocks(context); return 1; } template int t_cryptonote_protocol_handler::try_add_next_blocks(cryptonote_connection_context& context) { bool force_next_span = false; { // We try to lock the sync lock. If we can, it means no other thread is // currently adding blocks, so we do that for as long as we can from the // block queue. Then, we go back to download. const boost::unique_lock sync{m_sync_lock, boost::try_to_lock}; if (!sync.owns_lock()) { MINFO("Failed to lock m_sync_lock, going back to download"); goto skip; } MDEBUG(context << " lock m_sync_lock, adding blocks to chain..."); { m_core.pause_mine(); epee::misc_utils::auto_scope_leave_caller scope_exit_handler = epee::misc_utils::create_scope_leave_handler( boost::bind(&t_core::resume_mine, &m_core)); while (1) { const uint64_t previous_height = m_core.get_current_blockchain_height(); uint64_t start_height; std::list blocks; boost::uuids::uuid span_connection_id; if (!m_block_queue.get_next_span(start_height, blocks, span_connection_id)) { MDEBUG(context << " no next span found, going back to download"); break; } MDEBUG(context << " next span in the queue has blocks " << start_height << "-" << (start_height + blocks.size() - 1) << ", we need " << previous_height); if (blocks.empty()) { MERROR("Next span has no blocks"); m_block_queue.remove_spans(span_connection_id, start_height); break; } block new_block; if (!parse_and_validate_block_from_blob(blocks.front().block, new_block)) { MERROR("Failed to parse block, but it should already have been parsed"); m_block_queue.remove_spans(span_connection_id, start_height); break; } bool parent_known = m_core.have_block(new_block.prev_id); if (!parent_known) { // it could be: // - later in the current chain // - later in an alt chain // - orphan // if it was requested, then it'll be resolved later, otherwise it's an orphan bool parent_requested = m_block_queue.requested(new_block.prev_id); if (!parent_requested) { // this can happen if a connection was sicced onto a late span, if it did not have those blocks, // since we don't know that at the sic time LOG_ERROR_CCONTEXT("Got block with unknown parent which was not requested - querying block hashes"); m_block_queue.remove_spans(span_connection_id, start_height); context.m_needed_objects.clear(); context.m_last_response_height = 0; goto skip; } // parent was requested, so we wait for it to be retrieved MINFO(context << " parent was requested, we'll get back to it"); break; } const boost::posix_time::ptime start = boost::posix_time::microsec_clock::universal_time(); context.m_last_request_time = start; m_core.prepare_handle_incoming_blocks(blocks); uint64_t block_process_time_full = 0, transactions_process_time_full = 0; size_t num_txs = 0; for(const block_complete_entry& block_entry: blocks) { if (m_stopping) { m_core.cleanup_handle_incoming_blocks(); return 1; } // process transactions TIME_MEASURE_START(transactions_process_time); num_txs += block_entry.txs.size(); std::vector tvc; m_core.handle_incoming_txs(block_entry.txs, tvc, true, true, false); if (tvc.size() != block_entry.txs.size()) { LOG_ERROR_CCONTEXT("Internal error: tvc.size() != block_entry.txs.size()"); return 1; } std::list::const_iterator it = block_entry.txs.begin(); for (size_t i = 0; i < tvc.size(); ++i, ++it) { if(tvc[i].m_verifivation_failed) { if (!m_p2p->for_connection(span_connection_id, [&](cryptonote_connection_context& context, nodetool::peerid_type peer_id, uint32_t f)->bool{ LOG_ERROR_CCONTEXT("transaction verification failed on NOTIFY_RESPONSE_GET_OBJECTS, tx_id = " << epee::string_tools::pod_to_hex(get_blob_hash(*it)) << ", dropping connection"); drop_connection(context, false, true); return 1; })) LOG_ERROR_CCONTEXT("span connection id not found"); if (!m_core.cleanup_handle_incoming_blocks()) { LOG_PRINT_CCONTEXT_L0("Failure in cleanup_handle_incoming_blocks"); return 1; } // in case the peer had dropped beforehand, remove the span anyway so other threads can wake up and get it m_block_queue.remove_spans(span_connection_id, start_height); return 1; } } TIME_MEASURE_FINISH(transactions_process_time); transactions_process_time_full += transactions_process_time; // process block TIME_MEASURE_START(block_process_time); block_verification_context bvc = boost::value_initialized(); m_core.handle_incoming_block(block_entry.block, bvc, false); // <--- process block if(bvc.m_verifivation_failed) { if (!m_p2p->for_connection(span_connection_id, [&](cryptonote_connection_context& context, nodetool::peerid_type peer_id, uint32_t f)->bool{ LOG_PRINT_CCONTEXT_L1("Block verification failed, dropping connection"); drop_connection(context, true, true); return 1; })) LOG_ERROR_CCONTEXT("span connection id not found"); if (!m_core.cleanup_handle_incoming_blocks()) { LOG_PRINT_CCONTEXT_L0("Failure in cleanup_handle_incoming_blocks"); return 1; } // in case the peer had dropped beforehand, remove the span anyway so other threads can wake up and get it m_block_queue.remove_spans(span_connection_id, start_height); return 1; } if(bvc.m_marked_as_orphaned) { if (!m_p2p->for_connection(span_connection_id, [&](cryptonote_connection_context& context, nodetool::peerid_type peer_id, uint32_t f)->bool{ LOG_PRINT_CCONTEXT_L1("Block received at sync phase was marked as orphaned, dropping connection"); drop_connection(context, true, true); return 1; })) LOG_ERROR_CCONTEXT("span connection id not found"); if (!m_core.cleanup_handle_incoming_blocks()) { LOG_PRINT_CCONTEXT_L0("Failure in cleanup_handle_incoming_blocks"); return 1; } // in case the peer had dropped beforehand, remove the span anyway so other threads can wake up and get it m_block_queue.remove_spans(span_connection_id, start_height); return 1; } TIME_MEASURE_FINISH(block_process_time); block_process_time_full += block_process_time; } // each download block MCINFO("sync-info", "Block process time (" << blocks.size() << " blocks, " << num_txs << " txs): " << block_process_time_full + transactions_process_time_full << " (" << transactions_process_time_full << "/" << block_process_time_full << ") ms"); if (!m_core.cleanup_handle_incoming_blocks()) { LOG_PRINT_CCONTEXT_L0("Failure in cleanup_handle_incoming_blocks"); return 1; } m_block_queue.remove_spans(span_connection_id, start_height); if (m_core.get_current_blockchain_height() > previous_height) { const boost::posix_time::time_duration dt = boost::posix_time::microsec_clock::universal_time() - start; std::string timing_message = ""; if (ELPP->vRegistry()->allowed(el::Level::Info, "sync-info")) timing_message = std::string(" (") + std::to_string(dt.total_microseconds()/1e6) + " sec, " + std::to_string((m_core.get_current_blockchain_height() - previous_height) * 1e6 / dt.total_microseconds()) + " blocks/sec), " + std::to_string(m_block_queue.get_data_size() / 1048576.f) + " MB queued"; if (ELPP->vRegistry()->allowed(el::Level::Debug, "sync-info")) timing_message += std::string(": ") + m_block_queue.get_overview(); MGINFO_YELLOW(context << " Synced " << m_core.get_current_blockchain_height() << "/" << m_core.get_target_blockchain_height() << timing_message); } } } if (should_download_next_span(context)) { context.m_needed_objects.clear(); context.m_last_response_height = 0; force_next_span = true; } } skip: if (!request_missing_objects(context, true, force_next_span)) { LOG_ERROR_CCONTEXT("Failed to request missing objects, dropping connection"); drop_connection(context, false, false); return 1; } return 1; } //------------------------------------------------------------------------------------------------------------------------ template bool t_cryptonote_protocol_handler::on_idle() { m_idle_peer_kicker.do_call(boost::bind(&t_cryptonote_protocol_handler::kick_idle_peers, this)); return m_core.on_idle(); } //------------------------------------------------------------------------------------------------------------------------ template bool t_cryptonote_protocol_handler::kick_idle_peers() { MTRACE("Checking for idle peers..."); std::vector kick_connections; m_p2p->for_each_connection([&](cryptonote_connection_context& context, nodetool::peerid_type peer_id, uint32_t support_flags)->bool { if (context.m_state == cryptonote_connection_context::state_synchronizing || context.m_state == cryptonote_connection_context::state_before_handshake) { const bool passive = context.m_state == cryptonote_connection_context::state_before_handshake; const boost::posix_time::ptime now = boost::posix_time::microsec_clock::universal_time(); const boost::posix_time::time_duration dt = now - context.m_last_request_time; const int64_t threshold = passive ? PASSIVE_PEER_KICK_TIME : IDLE_PEER_KICK_TIME; if (dt.total_microseconds() > threshold) { MINFO(context << " kicking " << (passive ? "passive" : "idle") << " peer"); kick_connections.push_back(context.m_connection_id); } } return true; }); for (const boost::uuids::uuid &conn_id: kick_connections) { m_p2p->for_connection(conn_id, [this](cryptonote_connection_context& context, nodetool::peerid_type peer_id, uint32_t support_flags) { drop_connection(context, false, false); return true; }); } return true; } //------------------------------------------------------------------------------------------------------------------------ template int t_cryptonote_protocol_handler::handle_request_chain(int command, NOTIFY_REQUEST_CHAIN::request& arg, cryptonote_connection_context& context) { MLOG_P2P_MESSAGE("Received NOTIFY_REQUEST_CHAIN (" << arg.block_ids.size() << " blocks"); NOTIFY_RESPONSE_CHAIN_ENTRY::request r; if(!m_core.find_blockchain_supplement(arg.block_ids, r)) { LOG_ERROR_CCONTEXT("Failed to handle NOTIFY_REQUEST_CHAIN."); drop_connection(context, false, false); return 1; } LOG_PRINT_CCONTEXT_L2("-->>NOTIFY_RESPONSE_CHAIN_ENTRY: m_start_height=" << r.start_height << ", m_total_height=" << r.total_height << ", m_block_ids.size()=" << r.m_block_ids.size()); post_notify(r, context); return 1; } //------------------------------------------------------------------------------------------------------------------------ template bool t_cryptonote_protocol_handler::should_download_next_span(cryptonote_connection_context& context) const { std::list hashes; boost::uuids::uuid span_connection_id; boost::posix_time::ptime request_time; std::pair span; span = m_block_queue.get_start_gap_span(); if (span.second > 0) { MDEBUG(context << " we should download it as there is a gap"); return true; } // if the next span is not scheduled (or there is none) span = m_block_queue.get_next_span_if_scheduled(hashes, span_connection_id, request_time); if (span.second == 0) { // we might be in a weird case where there is a filled next span, // but it starts higher than the current height uint64_t height; std::list bcel; if (!m_block_queue.get_next_span(height, bcel, span_connection_id, true)) return false; if (height > m_core.get_current_blockchain_height()) { MDEBUG(context << " we should download it as the next block isn't scheduled"); return true; } return false; } // if it was scheduled by this particular peer if (span_connection_id == context.m_connection_id) return false; float span_speed = m_block_queue.get_speed(span_connection_id); float speed = m_block_queue.get_speed(context.m_connection_id); MDEBUG(context << " next span is scheduled for " << span_connection_id << ", speed " << span_speed << ", ours " << speed); // we try for that span too if: // - we're substantially faster, or: // - we're the fastest and the other one isn't (avoids a peer being waaaay slow but yet unmeasured) // - the other one asked at least 5 seconds ago if (span_speed < .25 && speed > .75f) { MDEBUG(context << " we should download it as we're substantially faster"); return true; } if (speed == 1.0f && span_speed != 1.0f) { MDEBUG(context << " we should download it as we're the fastest peer"); return true; } const boost::posix_time::ptime now = boost::posix_time::microsec_clock::universal_time(); if ((now - request_time).total_microseconds() > REQUEST_NEXT_SCHEDULED_SPAN_THRESHOLD) { MDEBUG(context << " we should download it as this span was requested long ago"); return true; } return false; } //------------------------------------------------------------------------------------------------------------------------ template bool t_cryptonote_protocol_handler::request_missing_objects(cryptonote_connection_context& context, bool check_having_blocks, bool force_next_span) { // flush stale spans std::set live_connections; m_p2p->for_each_connection([&](cryptonote_connection_context& context, nodetool::peerid_type peer_id, uint32_t support_flags)->bool{ live_connections.insert(context.m_connection_id); return true; }); m_block_queue.flush_stale_spans(live_connections); // if we don't need to get next span, and the block queue is full enough, wait a bit bool start_from_current_chain = false; if (!force_next_span) { bool first = true; while (1) { size_t nblocks = m_block_queue.get_num_filled_spans(); size_t size = m_block_queue.get_data_size(); if (nblocks < BLOCK_QUEUE_NBLOCKS_THRESHOLD || size < BLOCK_QUEUE_SIZE_THRESHOLD) { if (!first) { LOG_DEBUG_CC(context, "Block queue is " << nblocks << " and " << size << ", resuming"); } break; } // this one triggers if all threads are in standby, which should not happen, // but happened at least once, so we unblock at least one thread if so const boost::unique_lock sync{m_sync_lock, boost::try_to_lock}; if (sync.owns_lock()) { LOG_DEBUG_CC(context, "No other thread is adding blocks, resuming"); break; } if (should_download_next_span(context)) { MDEBUG(context << " we should try for that next span too, we think we could get it faster, resuming"); force_next_span = true; break; } if (first) { LOG_DEBUG_CC(context, "Block queue is " << nblocks << " and " << size << ", pausing"); first = false; context.m_state = cryptonote_connection_context::state_standby; } // this needs doing after we went to standby, so the callback knows what to do bool filled; if (m_block_queue.has_next_span(context.m_connection_id, filled) && !filled) { MDEBUG(context << " we have the next span, and it is scheduled, resuming"); ++context.m_callback_request_count; m_p2p->request_callback(context); return true; } for (size_t n = 0; n < 50; ++n) { if (m_stopping) return true; boost::this_thread::sleep_for(boost::chrono::milliseconds(100)); } } context.m_state = cryptonote_connection_context::state_synchronizing; } MDEBUG(context << " request_missing_objects: check " << check_having_blocks << ", force_next_span " << force_next_span << ", m_needed_objects " << context.m_needed_objects.size() << " lrh " << context.m_last_response_height << ", chain " << m_core.get_current_blockchain_height()); if(context.m_needed_objects.size() || force_next_span) { //we know objects that we need, request this objects NOTIFY_REQUEST_GET_OBJECTS::request req; bool is_next = false; size_t count = 0; const size_t count_limit = m_core.get_block_sync_size(m_core.get_current_blockchain_height()); std::pair span = std::make_pair(0, 0); { MDEBUG(context << " checking for gap"); span = m_block_queue.get_start_gap_span(); if (span.second > 0) { const uint64_t first_block_height_known = context.m_last_response_height - context.m_needed_objects.size() + 1; const uint64_t last_block_height_known = context.m_last_response_height; const uint64_t first_block_height_needed = span.first; const uint64_t last_block_height_needed = span.first + std::min(span.second, (uint64_t)count_limit) - 1; MDEBUG(context << " gap found, span: " << span.first << " - " << span.first + span.second - 1 << " (" << last_block_height_needed << ")"); MDEBUG(context << " current known hashes from " << first_block_height_known << " to " << last_block_height_known); if (first_block_height_needed < first_block_height_known || last_block_height_needed > last_block_height_known) { MDEBUG(context << " we are missing some of the necessary hashes for this gap, requesting chain again"); context.m_needed_objects.clear(); context.m_last_response_height = 0; start_from_current_chain = true; goto skip; } MDEBUG(context << " we have the hashes for this gap"); } } if (force_next_span) { if (span.second == 0) { std::list hashes; boost::uuids::uuid span_connection_id; boost::posix_time::ptime time; span = m_block_queue.get_next_span_if_scheduled(hashes, span_connection_id, time); if (span.second > 0) { is_next = true; for (const auto &hash: hashes) { req.blocks.push_back(hash); context.m_requested_objects.insert(hash); } } } } if (span.second == 0) { MDEBUG(context << " span size is 0"); if (context.m_last_response_height + 1 < context.m_needed_objects.size()) { MERROR(context << " ERROR: inconsistent context: lrh " << context.m_last_response_height << ", nos " << context.m_needed_objects.size()); context.m_needed_objects.clear(); context.m_last_response_height = 0; goto skip; } // take out blocks we already have while (!context.m_needed_objects.empty() && m_core.have_block(context.m_needed_objects.front())) { // if we're popping the last hash, record it so we can ask again from that hash, // this prevents never being able to progress on peers we get old hash lists from if (context.m_needed_objects.size() == 1) context.m_last_known_hash = context.m_needed_objects.front(); context.m_needed_objects.pop_front(); } const uint64_t first_block_height = context.m_last_response_height - context.m_needed_objects.size() + 1; span = m_block_queue.reserve_span(first_block_height, context.m_last_response_height, count_limit, context.m_connection_id, context.m_needed_objects); MDEBUG(context << " span from " << first_block_height << ": " << span.first << "/" << span.second); } if (span.second == 0 && !force_next_span) { MDEBUG(context << " still no span reserved, we may be in the corner case of next span scheduled and everything else scheduled/filled"); std::list hashes; boost::uuids::uuid span_connection_id; boost::posix_time::ptime time; span = m_block_queue.get_next_span_if_scheduled(hashes, span_connection_id, time); if (span.second > 0) { is_next = true; for (const auto &hash: hashes) { req.blocks.push_back(hash); ++count; context.m_requested_objects.insert(hash); // that's atrocious O(n) wise, but this is rare auto i = std::find(context.m_needed_objects.begin(), context.m_needed_objects.end(), hash); if (i != context.m_needed_objects.end()) context.m_needed_objects.erase(i); } } } MDEBUG(context << " span: " << span.first << "/" << span.second << " (" << span.first << " - " << (span.first + span.second - 1) << ")"); if (span.second > 0) { if (!is_next) { const uint64_t first_context_block_height = context.m_last_response_height - context.m_needed_objects.size() + 1; uint64_t skip = span.first - first_context_block_height; if (skip > context.m_needed_objects.size()) { MERROR("ERROR: skip " << skip << ", m_needed_objects " << context.m_needed_objects.size() << ", first_context_block_height" << first_context_block_height); return false; } while (skip--) context.m_needed_objects.pop_front(); if (context.m_needed_objects.size() < span.second) { MERROR("ERROR: span " << span.first << "/" << span.second << ", m_needed_objects " << context.m_needed_objects.size()); return false; } auto it = context.m_needed_objects.begin(); for (size_t n = 0; n < span.second; ++n) { req.blocks.push_back(*it); ++count; context.m_requested_objects.insert(*it); auto j = it++; context.m_needed_objects.erase(j); } } context.m_last_request_time = boost::posix_time::microsec_clock::universal_time(); LOG_PRINT_CCONTEXT_L1("-->>NOTIFY_REQUEST_GET_OBJECTS: blocks.size()=" << req.blocks.size() << ", txs.size()=" << req.txs.size() << "requested blocks count=" << count << " / " << count_limit << " from " << span.first << ", first hash " << req.blocks.front()); //epee::net_utils::network_throttle_manager::get_global_throttle_inreq().logger_handle_net("log/dr-monero/net/req-all.data", sec, get_avg_block_size()); post_notify(req, context); return true; } } skip: context.m_needed_objects.clear(); if(context.m_last_response_height < context.m_remote_blockchain_height-1) {//we have to fetch more objects ids, request blockchain entry NOTIFY_REQUEST_CHAIN::request r = boost::value_initialized(); m_core.get_short_chain_history(r.block_ids); CHECK_AND_ASSERT_MES(!r.block_ids.empty(), false, "Short chain history is empty"); if (!start_from_current_chain) { // we'll want to start off from where we are on that peer, which may not be added yet if (context.m_last_known_hash != crypto::null_hash && r.block_ids.front() != context.m_last_known_hash) r.block_ids.push_front(context.m_last_known_hash); } handler_request_blocks_history( r.block_ids ); // change the limit(?), sleep(?) //std::string blob; // for calculate size of request //epee::serialization::store_t_to_binary(r, blob); //epee::net_utils::network_throttle_manager::get_global_throttle_inreq().logger_handle_net("log/dr-monero/net/req-all.data", sec, get_avg_block_size()); //LOG_PRINT_CCONTEXT_L1("r = " << 200); context.m_last_request_time = boost::posix_time::microsec_clock::universal_time(); LOG_PRINT_CCONTEXT_L1("-->>NOTIFY_REQUEST_CHAIN: m_block_ids.size()=" << r.block_ids.size() << ", start_from_current_chain " << start_from_current_chain); post_notify(r, context); }else { CHECK_AND_ASSERT_MES(context.m_last_response_height == context.m_remote_blockchain_height-1 && !context.m_needed_objects.size() && !context.m_requested_objects.size(), false, "request_missing_blocks final condition failed!" << "\r\nm_last_response_height=" << context.m_last_response_height << "\r\nm_remote_blockchain_height=" << context.m_remote_blockchain_height << "\r\nm_needed_objects.size()=" << context.m_needed_objects.size() << "\r\nm_requested_objects.size()=" << context.m_requested_objects.size() << "\r\non connection [" << epee::net_utils::print_connection_context_short(context)<< "]"); context.m_state = cryptonote_connection_context::state_normal; if (context.m_remote_blockchain_height >= m_core.get_target_blockchain_height()) { if (m_core.get_current_blockchain_height() >= m_core.get_target_blockchain_height()) { MGINFO_GREEN("SYNCHRONIZED OK"); on_connection_synchronized(); } } else { MINFO(context << " we've reached this peer's blockchain height"); } } return true; } //------------------------------------------------------------------------------------------------------------------------ template bool t_cryptonote_protocol_handler::on_connection_synchronized() { bool val_expected = false; if(m_synchronized.compare_exchange_strong(val_expected, true)) { MGINFO_YELLOW(ENDL << "**********************************************************************" << ENDL << "You are now synchronized with the network. You may now start monero-wallet-cli." << ENDL << ENDL << "Use the \"help\" command to see the list of available commands." << ENDL << "**********************************************************************"); m_core.on_synchronized(); } m_core.safesyncmode(true); return true; } //------------------------------------------------------------------------------------------------------------------------ template size_t t_cryptonote_protocol_handler::get_synchronizing_connections_count() { size_t count = 0; m_p2p->for_each_connection([&](cryptonote_connection_context& context, nodetool::peerid_type peer_id, uint32_t support_flags)->bool{ if(context.m_state == cryptonote_connection_context::state_synchronizing) ++count; return true; }); return count; } //------------------------------------------------------------------------------------------------------------------------ template int t_cryptonote_protocol_handler::handle_response_chain_entry(int command, NOTIFY_RESPONSE_CHAIN_ENTRY::request& arg, cryptonote_connection_context& context) { MLOG_P2P_MESSAGE("Received NOTIFY_RESPONSE_CHAIN_ENTRY: m_block_ids.size()=" << arg.m_block_ids.size() << ", m_start_height=" << arg.start_height << ", m_total_height=" << arg.total_height); if(!arg.m_block_ids.size()) { LOG_ERROR_CCONTEXT("sent empty m_block_ids, dropping connection"); drop_connection(context, true, false); return 1; } if (arg.total_height < arg.m_block_ids.size() || arg.start_height > arg.total_height - arg.m_block_ids.size()) { LOG_ERROR_CCONTEXT("sent invalid start/nblocks/height, dropping connection"); drop_connection(context, true, false); return 1; } context.m_remote_blockchain_height = arg.total_height; context.m_last_response_height = arg.start_height + arg.m_block_ids.size()-1; if(context.m_last_response_height > context.m_remote_blockchain_height) { LOG_ERROR_CCONTEXT("sent wrong NOTIFY_RESPONSE_CHAIN_ENTRY, with m_total_height=" << arg.total_height << ", m_start_height=" << arg.start_height << ", m_block_ids.size()=" << arg.m_block_ids.size()); drop_connection(context, false, false); return 1; } uint64_t n_use_blocks = m_core.prevalidate_block_hashes(arg.start_height, arg.m_block_ids); if (n_use_blocks == 0) { LOG_ERROR_CCONTEXT("Peer yielded no usable blocks, dropping connection"); drop_connection(context, false, false); return 1; } uint64_t added = 0; for(auto& bl_id: arg.m_block_ids) { context.m_needed_objects.push_back(bl_id); if (++added == n_use_blocks) break; } context.m_last_response_height -= arg.m_block_ids.size() - n_use_blocks; if (!request_missing_objects(context, false)) { LOG_ERROR_CCONTEXT("Failed to request missing objects, dropping connection"); drop_connection(context, false, false); return 1; } if (arg.total_height > m_core.get_target_blockchain_height()) m_core.set_target_blockchain_height(arg.total_height); return 1; } //------------------------------------------------------------------------------------------------------------------------ template bool t_cryptonote_protocol_handler::relay_block(NOTIFY_NEW_BLOCK::request& arg, cryptonote_connection_context& exclude_context) { NOTIFY_NEW_FLUFFY_BLOCK::request fluffy_arg = AUTO_VAL_INIT(fluffy_arg); fluffy_arg.current_blockchain_height = arg.current_blockchain_height; std::list fluffy_txs; fluffy_arg.b = arg.b; fluffy_arg.b.txs = fluffy_txs; // pre-serialize them std::string fullBlob, fluffyBlob; epee::serialization::store_t_to_binary(arg, fullBlob); epee::serialization::store_t_to_binary(fluffy_arg, fluffyBlob); // sort peers between fluffy ones and others std::list fullConnections, fluffyConnections; m_p2p->for_each_connection([this, &exclude_context, &fullConnections, &fluffyConnections](connection_context& context, nodetool::peerid_type peer_id, uint32_t support_flags) { if (peer_id && exclude_context.m_connection_id != context.m_connection_id) { if(m_core.fluffy_blocks_enabled() && (support_flags & P2P_SUPPORT_FLAG_FLUFFY_BLOCKS)) { LOG_DEBUG_CC(context, "PEER SUPPORTS FLUFFY BLOCKS - RELAYING THIN/COMPACT WHATEVER BLOCK"); fluffyConnections.push_back(context.m_connection_id); } else { LOG_DEBUG_CC(context, "PEER DOESN'T SUPPORT FLUFFY BLOCKS - RELAYING FULL BLOCK"); fullConnections.push_back(context.m_connection_id); } } return true; }); // send fluffy ones first, we want to encourage people to run that m_p2p->relay_notify_to_list(NOTIFY_NEW_FLUFFY_BLOCK::ID, fluffyBlob, fluffyConnections); m_p2p->relay_notify_to_list(NOTIFY_NEW_BLOCK::ID, fullBlob, fullConnections); return true; } //------------------------------------------------------------------------------------------------------------------------ template bool t_cryptonote_protocol_handler::relay_transactions(NOTIFY_NEW_TRANSACTIONS::request& arg, cryptonote_connection_context& exclude_context) { // no check for success, so tell core they're relayed unconditionally for(auto tx_blob_it = arg.txs.begin(); tx_blob_it!=arg.txs.end(); ++tx_blob_it) m_core.on_transaction_relayed(*tx_blob_it); return relay_post_notify(arg, exclude_context); } //------------------------------------------------------------------------------------------------------------------------ template void t_cryptonote_protocol_handler::drop_connection(cryptonote_connection_context &context, bool add_fail, bool flush_all_spans) { if (add_fail) m_p2p->add_host_fail(context.m_remote_address); m_p2p->drop_connection(context); m_block_queue.flush_spans(context.m_connection_id, flush_all_spans); } //------------------------------------------------------------------------------------------------------------------------ template void t_cryptonote_protocol_handler::on_connection_close(cryptonote_connection_context &context) { uint64_t target = 0; m_p2p->for_each_connection([&](const connection_context& cntxt, nodetool::peerid_type peer_id, uint32_t support_flags) { if (cntxt.m_state >= cryptonote_connection_context::state_synchronizing && cntxt.m_connection_id != context.m_connection_id) target = std::max(target, cntxt.m_remote_blockchain_height); return true; }); const uint64_t previous_target = m_core.get_target_blockchain_height(); if (target < previous_target) { MINFO("Target height decreasing from " << previous_target << " to " << target); m_core.set_target_blockchain_height(target); } m_block_queue.flush_spans(context.m_connection_id, false); } //------------------------------------------------------------------------------------------------------------------------ template void t_cryptonote_protocol_handler::stop() { m_stopping = true; m_core.stop(); } } // namespace