mirror of
https://github.com/monero-project/monero.git
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02d887c2e5
- New flag in NOTIFY_NEW_TRANSACTION to indicate stem mode - Stem loops detected in tx_pool.cpp - Embargo timeout for a blackhole attack during stem phase
1591 lines
62 KiB
C++
1591 lines
62 KiB
C++
// Copyright (c) 2014-2019, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
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#include <algorithm>
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#include <boost/filesystem.hpp>
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#include <unordered_set>
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#include <vector>
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#include "tx_pool.h"
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#include "cryptonote_tx_utils.h"
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#include "cryptonote_basic/cryptonote_boost_serialization.h"
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#include "cryptonote_config.h"
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#include "blockchain.h"
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#include "blockchain_db/locked_txn.h"
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#include "blockchain_db/blockchain_db.h"
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#include "common/boost_serialization_helper.h"
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#include "int-util.h"
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#include "misc_language.h"
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#include "warnings.h"
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#include "common/perf_timer.h"
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#include "crypto/hash.h"
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#include "crypto/duration.h"
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#undef MONERO_DEFAULT_LOG_CATEGORY
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#define MONERO_DEFAULT_LOG_CATEGORY "txpool"
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DISABLE_VS_WARNINGS(4244 4345 4503) //'boost::foreach_detail_::or_' : decorated name length exceeded, name was truncated
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using namespace crypto;
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namespace cryptonote
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{
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namespace
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{
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/*! The Dandelion++ has formula for calculating the average embargo timeout:
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(-k*(k-1)*hop)/(2*log(1-ep))
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where k is the number of hops before this node and ep is the probability
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that one of the k hops hits their embargo timer, and hop is the average
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time taken between hops. So decreasing ep will make it more probable
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that "this" node is the first to expire the embargo timer. Increasing k
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will increase the number of nodes that will be "hidden" as a prior
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recipient of the tx.
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As example, k=5 and ep=0.1 means "this" embargo timer has a 90%
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probability of being the first to expire amongst 5 nodes that saw the
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tx before "this" one. These values are independent to the fluff
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probability, but setting a low k with a low p (fluff probability) is
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not ideal since a blackhole is more likely to reveal earlier nodes in
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the chain.
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This value was calculated with k=10, ep=0.10, and hop = 175 ms. A
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testrun from a recent Intel laptop took ~80ms to
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receive+parse+proces+send transaction. At least 50ms will be added to
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the latency if crossing an ocean. So 175ms is the fudge factor for
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a single hop with 173s being the embargo timer. */
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constexpr const std::chrono::seconds dandelionpp_embargo_average{CRYPTONOTE_DANDELIONPP_EMBARGO_AVERAGE};
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//TODO: constants such as these should at least be in the header,
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// but probably somewhere more accessible to the rest of the
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// codebase. As it stands, it is at best nontrivial to test
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// whether or not changing these parameters (or adding new)
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// will work correctly.
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time_t const MIN_RELAY_TIME = (60 * 5); // only start re-relaying transactions after that many seconds
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time_t const MAX_RELAY_TIME = (60 * 60 * 4); // at most that many seconds between resends
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float const ACCEPT_THRESHOLD = 1.0f;
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// a kind of increasing backoff within min/max bounds
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uint64_t get_relay_delay(time_t now, time_t received)
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{
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time_t d = (now - received + MIN_RELAY_TIME) / MIN_RELAY_TIME * MIN_RELAY_TIME;
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if (d > MAX_RELAY_TIME)
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d = MAX_RELAY_TIME;
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return d;
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}
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uint64_t template_accept_threshold(uint64_t amount)
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{
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return amount * ACCEPT_THRESHOLD;
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}
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uint64_t get_transaction_weight_limit(uint8_t version)
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{
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// from v8, limit a tx to 50% of the minimum block weight
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if (version >= 8)
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return get_min_block_weight(version) / 2 - CRYPTONOTE_COINBASE_BLOB_RESERVED_SIZE;
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else
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return get_min_block_weight(version) - CRYPTONOTE_COINBASE_BLOB_RESERVED_SIZE;
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}
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}
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//---------------------------------------------------------------------------------
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//---------------------------------------------------------------------------------
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tx_memory_pool::tx_memory_pool(Blockchain& bchs): m_blockchain(bchs), m_txpool_max_weight(DEFAULT_TXPOOL_MAX_WEIGHT), m_txpool_weight(0), m_cookie(0)
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{
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}
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//---------------------------------------------------------------------------------
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bool tx_memory_pool::add_tx(transaction &tx, /*const crypto::hash& tx_prefix_hash,*/ const crypto::hash &id, const cryptonote::blobdata &blob, size_t tx_weight, tx_verification_context& tvc, relay_method tx_relay, bool relayed, uint8_t version)
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{
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const bool kept_by_block = (tx_relay == relay_method::block);
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// this should already be called with that lock, but let's make it explicit for clarity
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CRITICAL_REGION_LOCAL(m_transactions_lock);
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PERF_TIMER(add_tx);
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if (tx.version == 0)
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{
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// v0 never accepted
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LOG_PRINT_L1("transaction version 0 is invalid");
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tvc.m_verifivation_failed = true;
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return false;
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}
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// we do not accept transactions that timed out before, unless they're
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// kept_by_block
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if (!kept_by_block && m_timed_out_transactions.find(id) != m_timed_out_transactions.end())
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{
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// not clear if we should set that, since verifivation (sic) did not fail before, since
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// the tx was accepted before timing out.
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tvc.m_verifivation_failed = true;
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return false;
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}
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if(!check_inputs_types_supported(tx))
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{
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tvc.m_verifivation_failed = true;
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tvc.m_invalid_input = true;
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return false;
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}
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// fee per kilobyte, size rounded up.
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uint64_t fee;
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if (tx.version == 1)
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{
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uint64_t inputs_amount = 0;
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if(!get_inputs_money_amount(tx, inputs_amount))
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{
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tvc.m_verifivation_failed = true;
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return false;
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}
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uint64_t outputs_amount = get_outs_money_amount(tx);
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if(outputs_amount > inputs_amount)
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{
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LOG_PRINT_L1("transaction use more money than it has: use " << print_money(outputs_amount) << ", have " << print_money(inputs_amount));
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tvc.m_verifivation_failed = true;
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tvc.m_overspend = true;
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return false;
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}
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else if(outputs_amount == inputs_amount)
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{
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LOG_PRINT_L1("transaction fee is zero: outputs_amount == inputs_amount, rejecting.");
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tvc.m_verifivation_failed = true;
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tvc.m_fee_too_low = true;
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return false;
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}
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fee = inputs_amount - outputs_amount;
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}
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else
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{
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fee = tx.rct_signatures.txnFee;
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}
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if (!kept_by_block && !m_blockchain.check_fee(tx_weight, fee))
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{
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tvc.m_verifivation_failed = true;
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tvc.m_fee_too_low = true;
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return false;
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}
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size_t tx_weight_limit = get_transaction_weight_limit(version);
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if ((!kept_by_block || version >= HF_VERSION_PER_BYTE_FEE) && tx_weight > tx_weight_limit)
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{
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LOG_PRINT_L1("transaction is too heavy: " << tx_weight << " bytes, maximum weight: " << tx_weight_limit);
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tvc.m_verifivation_failed = true;
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tvc.m_too_big = true;
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return false;
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}
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// if the transaction came from a block popped from the chain,
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// don't check if we have its key images as spent.
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// TODO: Investigate why not?
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if(!kept_by_block)
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{
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if(have_tx_keyimges_as_spent(tx))
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{
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mark_double_spend(tx);
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LOG_PRINT_L1("Transaction with id= "<< id << " used already spent key images");
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tvc.m_verifivation_failed = true;
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tvc.m_double_spend = true;
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return false;
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}
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}
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if (!m_blockchain.check_tx_outputs(tx, tvc))
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{
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LOG_PRINT_L1("Transaction with id= "<< id << " has at least one invalid output");
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tvc.m_verifivation_failed = true;
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tvc.m_invalid_output = true;
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return false;
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}
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// assume failure during verification steps until success is certain
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tvc.m_verifivation_failed = true;
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time_t receive_time = time(nullptr);
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crypto::hash max_used_block_id = null_hash;
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uint64_t max_used_block_height = 0;
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cryptonote::txpool_tx_meta_t meta{};
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bool ch_inp_res = check_tx_inputs([&tx]()->cryptonote::transaction&{ return tx; }, id, max_used_block_height, max_used_block_id, tvc, kept_by_block);
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if(!ch_inp_res)
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{
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// if the transaction was valid before (kept_by_block), then it
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// may become valid again, so ignore the failed inputs check.
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if(kept_by_block)
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{
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meta.weight = tx_weight;
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meta.fee = fee;
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meta.max_used_block_id = null_hash;
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meta.max_used_block_height = 0;
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meta.last_failed_height = 0;
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meta.last_failed_id = null_hash;
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meta.receive_time = receive_time;
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meta.last_relayed_time = time(NULL);
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meta.relayed = relayed;
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meta.set_relay_method(tx_relay);
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meta.double_spend_seen = have_tx_keyimges_as_spent(tx);
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meta.pruned = tx.pruned;
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meta.bf_padding = 0;
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memset(meta.padding, 0, sizeof(meta.padding));
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try
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{
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if (kept_by_block)
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m_parsed_tx_cache.insert(std::make_pair(id, tx));
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CRITICAL_REGION_LOCAL1(m_blockchain);
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LockedTXN lock(m_blockchain.get_db());
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if (!insert_key_images(tx, id, tx_relay))
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return false;
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m_blockchain.add_txpool_tx(id, blob, meta);
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m_txs_by_fee_and_receive_time.emplace(std::pair<double, std::time_t>(fee / (double)(tx_weight ? tx_weight : 1), receive_time), id);
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lock.commit();
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}
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catch (const std::exception &e)
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{
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MERROR("Error adding transaction to txpool: " << e.what());
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return false;
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}
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tvc.m_verifivation_impossible = true;
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tvc.m_added_to_pool = true;
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}else
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{
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LOG_PRINT_L1("tx used wrong inputs, rejected");
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tvc.m_verifivation_failed = true;
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tvc.m_invalid_input = true;
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return false;
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}
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}else
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{
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try
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{
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if (kept_by_block)
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m_parsed_tx_cache.insert(std::make_pair(id, tx));
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CRITICAL_REGION_LOCAL1(m_blockchain);
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LockedTXN lock(m_blockchain.get_db());
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const bool existing_tx = m_blockchain.get_txpool_tx_meta(id, meta);
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if (existing_tx)
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{
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/* If Dandelion++ loop. Do not use txes in the `local` state in the
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loop detection - txes in that state should be outgoing over i2p/tor
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then routed back via public dandelion++ stem. Pretend to be
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another stem node in that situation, a loop over the public
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network hasn't been hit yet. */
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if (tx_relay == relay_method::stem && meta.dandelionpp_stem)
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tx_relay = relay_method::fluff;
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}
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else
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meta.set_relay_method(relay_method::none);
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if (meta.upgrade_relay_method(tx_relay) || !existing_tx) // synchronize with embargo timer or stem/fluff out-of-order messages
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{
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//update transactions container
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meta.last_relayed_time = std::numeric_limits<decltype(meta.last_relayed_time)>::max();
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meta.receive_time = receive_time;
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meta.weight = tx_weight;
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meta.fee = fee;
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meta.max_used_block_id = max_used_block_id;
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meta.max_used_block_height = max_used_block_height;
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meta.last_failed_height = 0;
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meta.last_failed_id = null_hash;
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meta.relayed = relayed;
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meta.double_spend_seen = false;
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meta.pruned = tx.pruned;
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meta.bf_padding = 0;
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memset(meta.padding, 0, sizeof(meta.padding));
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if (!insert_key_images(tx, id, tx_relay))
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return false;
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m_blockchain.remove_txpool_tx(id);
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m_blockchain.add_txpool_tx(id, blob, meta);
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m_txs_by_fee_and_receive_time.emplace(std::pair<double, std::time_t>(fee / (double)(tx_weight ? tx_weight : 1), receive_time), id);
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}
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lock.commit();
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}
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catch (const std::exception &e)
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{
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MERROR("internal error: error adding transaction to txpool: " << e.what());
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return false;
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}
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tvc.m_added_to_pool = true;
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static_assert(unsigned(relay_method::none) == 0, "expected relay_method::none value to be zero");
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if(meta.fee > 0)
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tvc.m_relay = tx_relay;
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}
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tvc.m_verifivation_failed = false;
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m_txpool_weight += tx_weight;
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++m_cookie;
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MINFO("Transaction added to pool: txid " << id << " weight: " << tx_weight << " fee/byte: " << (fee / (double)(tx_weight ? tx_weight : 1)));
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prune(m_txpool_max_weight);
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return true;
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}
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//---------------------------------------------------------------------------------
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bool tx_memory_pool::add_tx(transaction &tx, tx_verification_context& tvc, relay_method tx_relay, bool relayed, uint8_t version)
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{
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crypto::hash h = null_hash;
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size_t blob_size = 0;
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cryptonote::blobdata bl;
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t_serializable_object_to_blob(tx, bl);
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if (bl.size() == 0 || !get_transaction_hash(tx, h))
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return false;
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return add_tx(tx, h, bl, get_transaction_weight(tx, bl.size()), tvc, tx_relay, relayed, version);
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}
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//---------------------------------------------------------------------------------
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size_t tx_memory_pool::get_txpool_weight() const
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{
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CRITICAL_REGION_LOCAL(m_transactions_lock);
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return m_txpool_weight;
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}
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//---------------------------------------------------------------------------------
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void tx_memory_pool::set_txpool_max_weight(size_t bytes)
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{
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CRITICAL_REGION_LOCAL(m_transactions_lock);
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m_txpool_max_weight = bytes;
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}
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//---------------------------------------------------------------------------------
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void tx_memory_pool::prune(size_t bytes)
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{
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CRITICAL_REGION_LOCAL(m_transactions_lock);
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if (bytes == 0)
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bytes = m_txpool_max_weight;
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CRITICAL_REGION_LOCAL1(m_blockchain);
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LockedTXN lock(m_blockchain.get_db());
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bool changed = false;
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// this will never remove the first one, but we don't care
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auto it = --m_txs_by_fee_and_receive_time.end();
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while (it != m_txs_by_fee_and_receive_time.begin())
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{
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if (m_txpool_weight <= bytes)
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break;
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try
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{
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const crypto::hash &txid = it->second;
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txpool_tx_meta_t meta;
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if (!m_blockchain.get_txpool_tx_meta(txid, meta))
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{
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MERROR("Failed to find tx_meta in txpool");
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return;
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}
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// don't prune the kept_by_block ones, they're likely added because we're adding a block with those
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if (meta.kept_by_block)
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{
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--it;
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continue;
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}
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cryptonote::blobdata txblob = m_blockchain.get_txpool_tx_blob(txid, relay_category::all);
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cryptonote::transaction_prefix tx;
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if (!parse_and_validate_tx_prefix_from_blob(txblob, tx))
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{
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MERROR("Failed to parse tx from txpool");
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return;
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}
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// remove first, in case this throws, so key images aren't removed
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MINFO("Pruning tx " << txid << " from txpool: weight: " << meta.weight << ", fee/byte: " << it->first.first);
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m_blockchain.remove_txpool_tx(txid);
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m_txpool_weight -= meta.weight;
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remove_transaction_keyimages(tx, txid);
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MINFO("Pruned tx " << txid << " from txpool: weight: " << meta.weight << ", fee/byte: " << it->first.first);
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m_txs_by_fee_and_receive_time.erase(it--);
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changed = true;
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}
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catch (const std::exception &e)
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{
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MERROR("Error while pruning txpool: " << e.what());
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return;
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}
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}
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lock.commit();
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if (changed)
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++m_cookie;
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if (m_txpool_weight > bytes)
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MINFO("Pool weight after pruning is larger than limit: " << m_txpool_weight << "/" << bytes);
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}
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//---------------------------------------------------------------------------------
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bool tx_memory_pool::insert_key_images(const transaction_prefix &tx, const crypto::hash &id, relay_method tx_relay)
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{
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for(const auto& in: tx.vin)
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{
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CHECKED_GET_SPECIFIC_VARIANT(in, const txin_to_key, txin, false);
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std::unordered_set<crypto::hash>& kei_image_set = m_spent_key_images[txin.k_image];
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|
|
// Only allow multiple txes per key-image if kept-by-block. Only allow
|
|
// the same txid if going from local/stem->fluff.
|
|
|
|
if (tx_relay != relay_method::block)
|
|
{
|
|
const bool one_txid =
|
|
(kei_image_set.empty() || (kei_image_set.size() == 1 && *(kei_image_set.cbegin()) == id));
|
|
CHECK_AND_ASSERT_MES(one_txid, false, "internal error: tx_relay=" << unsigned(tx_relay)
|
|
<< ", kei_image_set.size()=" << kei_image_set.size() << ENDL << "txin.k_image=" << txin.k_image << ENDL
|
|
<< "tx_id=" << id);
|
|
}
|
|
|
|
const bool new_or_previously_private =
|
|
kei_image_set.insert(id).second ||
|
|
!m_blockchain.txpool_tx_matches_category(id, relay_category::legacy);
|
|
CHECK_AND_ASSERT_MES(new_or_previously_private, false, "internal error: try to insert duplicate iterator in key_image set");
|
|
}
|
|
++m_cookie;
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
//FIXME: Can return early before removal of all of the key images.
|
|
// At the least, need to make sure that a false return here
|
|
// is treated properly. Should probably not return early, however.
|
|
bool tx_memory_pool::remove_transaction_keyimages(const transaction_prefix& tx, const crypto::hash &actual_hash)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
// ND: Speedup
|
|
for(const txin_v& vi: tx.vin)
|
|
{
|
|
CHECKED_GET_SPECIFIC_VARIANT(vi, const txin_to_key, txin, false);
|
|
auto it = m_spent_key_images.find(txin.k_image);
|
|
CHECK_AND_ASSERT_MES(it != m_spent_key_images.end(), false, "failed to find transaction input in key images. img=" << txin.k_image << ENDL
|
|
<< "transaction id = " << actual_hash);
|
|
std::unordered_set<crypto::hash>& key_image_set = it->second;
|
|
CHECK_AND_ASSERT_MES(key_image_set.size(), false, "empty key_image set, img=" << txin.k_image << ENDL
|
|
<< "transaction id = " << actual_hash);
|
|
|
|
auto it_in_set = key_image_set.find(actual_hash);
|
|
CHECK_AND_ASSERT_MES(it_in_set != key_image_set.end(), false, "transaction id not found in key_image set, img=" << txin.k_image << ENDL
|
|
<< "transaction id = " << actual_hash);
|
|
key_image_set.erase(it_in_set);
|
|
if(!key_image_set.size())
|
|
{
|
|
//it is now empty hash container for this key_image
|
|
m_spent_key_images.erase(it);
|
|
}
|
|
|
|
}
|
|
++m_cookie;
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::take_tx(const crypto::hash &id, transaction &tx, cryptonote::blobdata &txblob, size_t& tx_weight, uint64_t& fee, bool &relayed, bool &do_not_relay, bool &double_spend_seen, bool &pruned)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
|
|
auto sorted_it = find_tx_in_sorted_container(id);
|
|
|
|
try
|
|
{
|
|
LockedTXN lock(m_blockchain.get_db());
|
|
txpool_tx_meta_t meta;
|
|
if (!m_blockchain.get_txpool_tx_meta(id, meta))
|
|
{
|
|
MERROR("Failed to find tx_meta in txpool");
|
|
return false;
|
|
}
|
|
txblob = m_blockchain.get_txpool_tx_blob(id, relay_category::all);
|
|
auto ci = m_parsed_tx_cache.find(id);
|
|
if (ci != m_parsed_tx_cache.end())
|
|
{
|
|
tx = ci->second;
|
|
}
|
|
else if (!(meta.pruned ? parse_and_validate_tx_base_from_blob(txblob, tx) : parse_and_validate_tx_from_blob(txblob, tx)))
|
|
{
|
|
MERROR("Failed to parse tx from txpool");
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
tx.set_hash(id);
|
|
}
|
|
tx_weight = meta.weight;
|
|
fee = meta.fee;
|
|
relayed = meta.relayed;
|
|
do_not_relay = meta.do_not_relay;
|
|
double_spend_seen = meta.double_spend_seen;
|
|
pruned = meta.pruned;
|
|
|
|
// remove first, in case this throws, so key images aren't removed
|
|
m_blockchain.remove_txpool_tx(id);
|
|
m_txpool_weight -= tx_weight;
|
|
remove_transaction_keyimages(tx, id);
|
|
lock.commit();
|
|
}
|
|
catch (const std::exception &e)
|
|
{
|
|
MERROR("Failed to remove tx from txpool: " << e.what());
|
|
return false;
|
|
}
|
|
|
|
if (sorted_it != m_txs_by_fee_and_receive_time.end())
|
|
m_txs_by_fee_and_receive_time.erase(sorted_it);
|
|
++m_cookie;
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::get_transaction_info(const crypto::hash &txid, tx_details &td) const
|
|
{
|
|
PERF_TIMER(get_transaction_info);
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
|
|
try
|
|
{
|
|
LockedTXN lock(m_blockchain.get_db());
|
|
txpool_tx_meta_t meta;
|
|
if (!m_blockchain.get_txpool_tx_meta(txid, meta))
|
|
{
|
|
MERROR("Failed to find tx in txpool");
|
|
return false;
|
|
}
|
|
cryptonote::blobdata txblob = m_blockchain.get_txpool_tx_blob(txid, relay_category::all);
|
|
auto ci = m_parsed_tx_cache.find(txid);
|
|
if (ci != m_parsed_tx_cache.end())
|
|
{
|
|
td.tx = ci->second;
|
|
}
|
|
else if (!(meta.pruned ? parse_and_validate_tx_base_from_blob(txblob, td.tx) : parse_and_validate_tx_from_blob(txblob, td.tx)))
|
|
{
|
|
MERROR("Failed to parse tx from txpool");
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
td.tx.set_hash(txid);
|
|
}
|
|
td.blob_size = txblob.size();
|
|
td.weight = meta.weight;
|
|
td.fee = meta.fee;
|
|
td.max_used_block_id = meta.max_used_block_id;
|
|
td.max_used_block_height = meta.max_used_block_height;
|
|
td.kept_by_block = meta.kept_by_block;
|
|
td.last_failed_height = meta.last_failed_height;
|
|
td.last_failed_id = meta.last_failed_id;
|
|
td.receive_time = meta.receive_time;
|
|
td.last_relayed_time = meta.dandelionpp_stem ? 0 : meta.last_relayed_time;
|
|
td.relayed = meta.relayed;
|
|
td.do_not_relay = meta.do_not_relay;
|
|
td.double_spend_seen = meta.double_spend_seen;
|
|
}
|
|
catch (const std::exception &e)
|
|
{
|
|
MERROR("Failed to get tx from txpool: " << e.what());
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::get_complement(const std::vector<crypto::hash> &hashes, std::vector<cryptonote::blobdata> &txes) const
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
|
|
m_blockchain.for_all_txpool_txes([this, &hashes, &txes](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata*) {
|
|
const auto relay_method = meta.get_relay_method();
|
|
if (relay_method != relay_method::block && relay_method != relay_method::fluff)
|
|
return true;
|
|
const auto i = std::find(hashes.begin(), hashes.end(), txid);
|
|
if (i == hashes.end())
|
|
{
|
|
cryptonote::blobdata bd;
|
|
try
|
|
{
|
|
if (!m_blockchain.get_txpool_tx_blob(txid, bd, cryptonote::relay_category::broadcasted))
|
|
{
|
|
MERROR("Failed to get blob for txpool transaction " << txid);
|
|
return true;
|
|
}
|
|
txes.emplace_back(std::move(bd));
|
|
}
|
|
catch (const std::exception &e)
|
|
{
|
|
MERROR("Failed to get blob for txpool transaction " << txid << ": " << e.what());
|
|
return true;
|
|
}
|
|
}
|
|
return true;
|
|
}, false);
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
void tx_memory_pool::on_idle()
|
|
{
|
|
m_remove_stuck_tx_interval.do_call([this](){return remove_stuck_transactions();});
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
sorted_tx_container::iterator tx_memory_pool::find_tx_in_sorted_container(const crypto::hash& id) const
|
|
{
|
|
return std::find_if( m_txs_by_fee_and_receive_time.begin(), m_txs_by_fee_and_receive_time.end()
|
|
, [&](const sorted_tx_container::value_type& a){
|
|
return a.second == id;
|
|
}
|
|
);
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
//TODO: investigate whether boolean return is appropriate
|
|
bool tx_memory_pool::remove_stuck_transactions()
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
std::list<std::pair<crypto::hash, uint64_t>> remove;
|
|
m_blockchain.for_all_txpool_txes([this, &remove](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata*) {
|
|
uint64_t tx_age = time(nullptr) - meta.receive_time;
|
|
|
|
if((tx_age > CRYPTONOTE_MEMPOOL_TX_LIVETIME && !meta.kept_by_block) ||
|
|
(tx_age > CRYPTONOTE_MEMPOOL_TX_FROM_ALT_BLOCK_LIVETIME && meta.kept_by_block) )
|
|
{
|
|
LOG_PRINT_L1("Tx " << txid << " removed from tx pool due to outdated, age: " << tx_age );
|
|
auto sorted_it = find_tx_in_sorted_container(txid);
|
|
if (sorted_it == m_txs_by_fee_and_receive_time.end())
|
|
{
|
|
LOG_PRINT_L1("Removing tx " << txid << " from tx pool, but it was not found in the sorted txs container!");
|
|
}
|
|
else
|
|
{
|
|
m_txs_by_fee_and_receive_time.erase(sorted_it);
|
|
}
|
|
m_timed_out_transactions.insert(txid);
|
|
remove.push_back(std::make_pair(txid, meta.weight));
|
|
}
|
|
return true;
|
|
}, false, relay_category::all);
|
|
|
|
if (!remove.empty())
|
|
{
|
|
LockedTXN lock(m_blockchain.get_db());
|
|
for (const std::pair<crypto::hash, uint64_t> &entry: remove)
|
|
{
|
|
const crypto::hash &txid = entry.first;
|
|
try
|
|
{
|
|
cryptonote::blobdata bd = m_blockchain.get_txpool_tx_blob(txid, relay_category::all);
|
|
cryptonote::transaction_prefix tx;
|
|
if (!parse_and_validate_tx_prefix_from_blob(bd, tx))
|
|
{
|
|
MERROR("Failed to parse tx from txpool");
|
|
// continue
|
|
}
|
|
else
|
|
{
|
|
// remove first, so we only remove key images if the tx removal succeeds
|
|
m_blockchain.remove_txpool_tx(txid);
|
|
m_txpool_weight -= entry.second;
|
|
remove_transaction_keyimages(tx, txid);
|
|
}
|
|
}
|
|
catch (const std::exception &e)
|
|
{
|
|
MWARNING("Failed to remove stuck transaction: " << txid);
|
|
// ignore error
|
|
}
|
|
}
|
|
lock.commit();
|
|
++m_cookie;
|
|
}
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
//TODO: investigate whether boolean return is appropriate
|
|
bool tx_memory_pool::get_relayable_transactions(std::vector<std::tuple<crypto::hash, cryptonote::blobdata, relay_method>> &txs) const
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
const uint64_t now = time(NULL);
|
|
txs.reserve(m_blockchain.get_txpool_tx_count());
|
|
m_blockchain.for_all_txpool_txes([this, now, &txs](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *){
|
|
// 0 fee transactions are never relayed
|
|
if(!meta.pruned && meta.fee > 0 && !meta.do_not_relay)
|
|
{
|
|
if (!meta.dandelionpp_stem && now - meta.last_relayed_time <= get_relay_delay(now, meta.receive_time))
|
|
return true;
|
|
if (meta.dandelionpp_stem && meta.last_relayed_time < now) // for dandelion++ stem, this value is the embargo timeout
|
|
return true;
|
|
|
|
// if the tx is older than half the max lifetime, we don't re-relay it, to avoid a problem
|
|
// mentioned by smooth where nodes would flush txes at slightly different times, causing
|
|
// flushed txes to be re-added when received from a node which was just about to flush it
|
|
uint64_t max_age = meta.kept_by_block ? CRYPTONOTE_MEMPOOL_TX_FROM_ALT_BLOCK_LIVETIME : CRYPTONOTE_MEMPOOL_TX_LIVETIME;
|
|
if (now - meta.receive_time <= max_age / 2)
|
|
{
|
|
try
|
|
{
|
|
txs.emplace_back(txid, m_blockchain.get_txpool_tx_blob(txid, relay_category::all), meta.get_relay_method());
|
|
}
|
|
catch (const std::exception &e)
|
|
{
|
|
MERROR("Failed to get transaction blob from db");
|
|
// ignore error
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}, false, relay_category::relayable);
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
void tx_memory_pool::set_relayed(const epee::span<const crypto::hash> hashes, const relay_method method)
|
|
{
|
|
crypto::random_poisson_seconds embargo_duration{dandelionpp_embargo_average};
|
|
const auto now = std::chrono::system_clock::now();
|
|
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
LockedTXN lock(m_blockchain.get_db());
|
|
for (const auto& hash : hashes)
|
|
{
|
|
try
|
|
{
|
|
txpool_tx_meta_t meta;
|
|
if (m_blockchain.get_txpool_tx_meta(hash, meta))
|
|
{
|
|
// txes can be received as "stem" or "fluff" in either order
|
|
meta.upgrade_relay_method(method);
|
|
meta.relayed = true;
|
|
|
|
if (meta.dandelionpp_stem)
|
|
meta.last_relayed_time = std::chrono::system_clock::to_time_t(now + embargo_duration());
|
|
else
|
|
meta.last_relayed_time = std::chrono::system_clock::to_time_t(now);
|
|
|
|
m_blockchain.update_txpool_tx(hash, meta);
|
|
}
|
|
}
|
|
catch (const std::exception &e)
|
|
{
|
|
MERROR("Failed to update txpool transaction metadata: " << e.what());
|
|
// continue
|
|
}
|
|
}
|
|
lock.commit();
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
size_t tx_memory_pool::get_transactions_count(bool include_sensitive) const
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
return m_blockchain.get_txpool_tx_count(include_sensitive);
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
void tx_memory_pool::get_transactions(std::vector<transaction>& txs, bool include_sensitive) const
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
const relay_category category = include_sensitive ? relay_category::all : relay_category::broadcasted;
|
|
txs.reserve(m_blockchain.get_txpool_tx_count(include_sensitive));
|
|
m_blockchain.for_all_txpool_txes([&txs](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *bd){
|
|
transaction tx;
|
|
if (!(meta.pruned ? parse_and_validate_tx_base_from_blob(*bd, tx) : parse_and_validate_tx_from_blob(*bd, tx)))
|
|
{
|
|
MERROR("Failed to parse tx from txpool");
|
|
// continue
|
|
return true;
|
|
}
|
|
tx.set_hash(txid);
|
|
txs.push_back(std::move(tx));
|
|
return true;
|
|
}, true, category);
|
|
}
|
|
//------------------------------------------------------------------
|
|
void tx_memory_pool::get_transaction_hashes(std::vector<crypto::hash>& txs, bool include_sensitive) const
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
const relay_category category = include_sensitive ? relay_category::all : relay_category::broadcasted;
|
|
txs.reserve(m_blockchain.get_txpool_tx_count(include_sensitive));
|
|
m_blockchain.for_all_txpool_txes([&txs](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *bd){
|
|
txs.push_back(txid);
|
|
return true;
|
|
}, false, category);
|
|
}
|
|
//------------------------------------------------------------------
|
|
void tx_memory_pool::get_transaction_backlog(std::vector<tx_backlog_entry>& backlog, bool include_sensitive) const
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
const uint64_t now = time(NULL);
|
|
const relay_category category = include_sensitive ? relay_category::all : relay_category::broadcasted;
|
|
backlog.reserve(m_blockchain.get_txpool_tx_count(include_sensitive));
|
|
m_blockchain.for_all_txpool_txes([&backlog, now](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *bd){
|
|
backlog.push_back({meta.weight, meta.fee, meta.receive_time - now});
|
|
return true;
|
|
}, false, category);
|
|
}
|
|
//------------------------------------------------------------------
|
|
void tx_memory_pool::get_transaction_stats(struct txpool_stats& stats, bool include_sensitive) const
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
const uint64_t now = time(NULL);
|
|
const relay_category category = include_sensitive ? relay_category::all : relay_category::broadcasted;
|
|
std::map<uint64_t, txpool_histo> agebytes;
|
|
stats.txs_total = m_blockchain.get_txpool_tx_count(include_sensitive);
|
|
std::vector<uint32_t> weights;
|
|
weights.reserve(stats.txs_total);
|
|
m_blockchain.for_all_txpool_txes([&stats, &weights, now, &agebytes](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *bd){
|
|
weights.push_back(meta.weight);
|
|
stats.bytes_total += meta.weight;
|
|
if (!stats.bytes_min || meta.weight < stats.bytes_min)
|
|
stats.bytes_min = meta.weight;
|
|
if (meta.weight > stats.bytes_max)
|
|
stats.bytes_max = meta.weight;
|
|
if (!meta.relayed)
|
|
stats.num_not_relayed++;
|
|
stats.fee_total += meta.fee;
|
|
if (!stats.oldest || meta.receive_time < stats.oldest)
|
|
stats.oldest = meta.receive_time;
|
|
if (meta.receive_time < now - 600)
|
|
stats.num_10m++;
|
|
if (meta.last_failed_height)
|
|
stats.num_failing++;
|
|
uint64_t age = now - meta.receive_time + (now == meta.receive_time);
|
|
agebytes[age].txs++;
|
|
agebytes[age].bytes += meta.weight;
|
|
if (meta.double_spend_seen)
|
|
++stats.num_double_spends;
|
|
return true;
|
|
}, false, category);
|
|
|
|
stats.bytes_med = epee::misc_utils::median(weights);
|
|
if (stats.txs_total > 1)
|
|
{
|
|
/* looking for 98th percentile */
|
|
size_t end = stats.txs_total * 0.02;
|
|
uint64_t delta, factor;
|
|
std::map<uint64_t, txpool_histo>::iterator it, i2;
|
|
if (end)
|
|
{
|
|
/* If enough txs, spread the first 98% of results across
|
|
* the first 9 bins, drop final 2% in last bin.
|
|
*/
|
|
it = agebytes.end();
|
|
size_t cumulative_num = 0;
|
|
/* Since agebytes is not empty and end is nonzero, the
|
|
* below loop can always run at least once.
|
|
*/
|
|
do {
|
|
--it;
|
|
cumulative_num += it->second.txs;
|
|
} while (it != agebytes.begin() && cumulative_num < end);
|
|
stats.histo_98pc = it->first;
|
|
factor = 9;
|
|
delta = it->first;
|
|
stats.histo.resize(10);
|
|
} else
|
|
{
|
|
/* If not enough txs, don't reserve the last slot;
|
|
* spread evenly across all 10 bins.
|
|
*/
|
|
stats.histo_98pc = 0;
|
|
it = agebytes.end();
|
|
factor = stats.txs_total > 9 ? 10 : stats.txs_total;
|
|
delta = now - stats.oldest;
|
|
stats.histo.resize(factor);
|
|
}
|
|
if (!delta)
|
|
delta = 1;
|
|
for (i2 = agebytes.begin(); i2 != it; i2++)
|
|
{
|
|
size_t i = (i2->first * factor - 1) / delta;
|
|
stats.histo[i].txs += i2->second.txs;
|
|
stats.histo[i].bytes += i2->second.bytes;
|
|
}
|
|
for (; i2 != agebytes.end(); i2++)
|
|
{
|
|
stats.histo[factor].txs += i2->second.txs;
|
|
stats.histo[factor].bytes += i2->second.bytes;
|
|
}
|
|
}
|
|
}
|
|
//------------------------------------------------------------------
|
|
//TODO: investigate whether boolean return is appropriate
|
|
bool tx_memory_pool::get_transactions_and_spent_keys_info(std::vector<tx_info>& tx_infos, std::vector<spent_key_image_info>& key_image_infos, bool include_sensitive_data) const
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
const relay_category category = include_sensitive_data ? relay_category::all : relay_category::broadcasted;
|
|
const size_t count = m_blockchain.get_txpool_tx_count(include_sensitive_data);
|
|
tx_infos.reserve(count);
|
|
key_image_infos.reserve(count);
|
|
m_blockchain.for_all_txpool_txes([&tx_infos, key_image_infos, include_sensitive_data](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *bd){
|
|
tx_info txi;
|
|
txi.id_hash = epee::string_tools::pod_to_hex(txid);
|
|
txi.tx_blob = *bd;
|
|
transaction tx;
|
|
if (!(meta.pruned ? parse_and_validate_tx_base_from_blob(*bd, tx) : parse_and_validate_tx_from_blob(*bd, tx)))
|
|
{
|
|
MERROR("Failed to parse tx from txpool");
|
|
// continue
|
|
return true;
|
|
}
|
|
tx.set_hash(txid);
|
|
txi.tx_json = obj_to_json_str(tx);
|
|
txi.blob_size = bd->size();
|
|
txi.weight = meta.weight;
|
|
txi.fee = meta.fee;
|
|
txi.kept_by_block = meta.kept_by_block;
|
|
txi.max_used_block_height = meta.max_used_block_height;
|
|
txi.max_used_block_id_hash = epee::string_tools::pod_to_hex(meta.max_used_block_id);
|
|
txi.last_failed_height = meta.last_failed_height;
|
|
txi.last_failed_id_hash = epee::string_tools::pod_to_hex(meta.last_failed_id);
|
|
// In restricted mode we do not include this data:
|
|
txi.receive_time = include_sensitive_data ? meta.receive_time : 0;
|
|
txi.relayed = meta.relayed;
|
|
// In restricted mode we do not include this data:
|
|
txi.last_relayed_time = (include_sensitive_data && !meta.dandelionpp_stem) ? meta.last_relayed_time : 0;
|
|
txi.do_not_relay = meta.do_not_relay;
|
|
txi.double_spend_seen = meta.double_spend_seen;
|
|
tx_infos.push_back(std::move(txi));
|
|
return true;
|
|
}, true, category);
|
|
|
|
txpool_tx_meta_t meta;
|
|
for (const key_images_container::value_type& kee : m_spent_key_images) {
|
|
const crypto::key_image& k_image = kee.first;
|
|
const std::unordered_set<crypto::hash>& kei_image_set = kee.second;
|
|
spent_key_image_info ki;
|
|
ki.id_hash = epee::string_tools::pod_to_hex(k_image);
|
|
for (const crypto::hash& tx_id_hash : kei_image_set)
|
|
{
|
|
if (m_blockchain.txpool_tx_matches_category(tx_id_hash, category))
|
|
ki.txs_hashes.push_back(epee::string_tools::pod_to_hex(tx_id_hash));
|
|
}
|
|
|
|
// Only return key images for which we have at least one tx that we can show for them
|
|
if (!ki.txs_hashes.empty())
|
|
key_image_infos.push_back(std::move(ki));
|
|
}
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::get_pool_for_rpc(std::vector<cryptonote::rpc::tx_in_pool>& tx_infos, cryptonote::rpc::key_images_with_tx_hashes& key_image_infos) const
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
tx_infos.reserve(m_blockchain.get_txpool_tx_count());
|
|
key_image_infos.reserve(m_blockchain.get_txpool_tx_count());
|
|
m_blockchain.for_all_txpool_txes([&tx_infos, key_image_infos](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *bd){
|
|
cryptonote::rpc::tx_in_pool txi;
|
|
txi.tx_hash = txid;
|
|
if (!(meta.pruned ? parse_and_validate_tx_base_from_blob(*bd, txi.tx) : parse_and_validate_tx_from_blob(*bd, txi.tx)))
|
|
{
|
|
MERROR("Failed to parse tx from txpool");
|
|
// continue
|
|
return true;
|
|
}
|
|
txi.tx.set_hash(txid);
|
|
txi.blob_size = bd->size();
|
|
txi.weight = meta.weight;
|
|
txi.fee = meta.fee;
|
|
txi.kept_by_block = meta.kept_by_block;
|
|
txi.max_used_block_height = meta.max_used_block_height;
|
|
txi.max_used_block_hash = meta.max_used_block_id;
|
|
txi.last_failed_block_height = meta.last_failed_height;
|
|
txi.last_failed_block_hash = meta.last_failed_id;
|
|
txi.receive_time = meta.receive_time;
|
|
txi.relayed = meta.relayed;
|
|
txi.last_relayed_time = meta.dandelionpp_stem ? 0 : meta.last_relayed_time;
|
|
txi.do_not_relay = meta.do_not_relay;
|
|
txi.double_spend_seen = meta.double_spend_seen;
|
|
tx_infos.push_back(txi);
|
|
return true;
|
|
}, true, relay_category::broadcasted);
|
|
|
|
for (const key_images_container::value_type& kee : m_spent_key_images) {
|
|
std::vector<crypto::hash> tx_hashes;
|
|
const std::unordered_set<crypto::hash>& kei_image_set = kee.second;
|
|
for (const crypto::hash& tx_id_hash : kei_image_set)
|
|
{
|
|
if (m_blockchain.txpool_tx_matches_category(tx_id_hash, relay_category::broadcasted))
|
|
tx_hashes.push_back(tx_id_hash);
|
|
}
|
|
|
|
if (!tx_hashes.empty())
|
|
key_image_infos[kee.first] = std::move(tx_hashes);
|
|
}
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::check_for_key_images(const std::vector<crypto::key_image>& key_images, std::vector<bool>& spent) const
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
|
|
spent.clear();
|
|
|
|
for (const auto& image : key_images)
|
|
{
|
|
bool is_spent = false;
|
|
const auto found = m_spent_key_images.find(image);
|
|
if (found != m_spent_key_images.end())
|
|
{
|
|
for (const crypto::hash& tx_hash : found->second)
|
|
is_spent |= m_blockchain.txpool_tx_matches_category(tx_hash, relay_category::broadcasted);
|
|
}
|
|
spent.push_back(is_spent);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::get_transaction(const crypto::hash& id, cryptonote::blobdata& txblob, relay_category tx_category) const
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
try
|
|
{
|
|
return m_blockchain.get_txpool_tx_blob(id, txblob, tx_category);
|
|
}
|
|
catch (const std::exception &e)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::on_blockchain_inc(uint64_t new_block_height, const crypto::hash& top_block_id)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
m_input_cache.clear();
|
|
m_parsed_tx_cache.clear();
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::on_blockchain_dec(uint64_t new_block_height, const crypto::hash& top_block_id)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
m_input_cache.clear();
|
|
m_parsed_tx_cache.clear();
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::have_tx(const crypto::hash &id, relay_category tx_category) const
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
return m_blockchain.get_db().txpool_has_tx(id, tx_category);
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::have_tx_keyimges_as_spent(const transaction& tx) const
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
for(const auto& in: tx.vin)
|
|
{
|
|
CHECKED_GET_SPECIFIC_VARIANT(in, const txin_to_key, tokey_in, true);//should never fail
|
|
if(have_tx_keyimg_as_spent(tokey_in.k_image))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::have_tx_keyimg_as_spent(const crypto::key_image& key_im) const
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
bool spent = false;
|
|
const auto found = m_spent_key_images.find(key_im);
|
|
if (found != m_spent_key_images.end())
|
|
{
|
|
for (const crypto::hash& tx_hash : found->second)
|
|
spent |= m_blockchain.txpool_tx_matches_category(tx_hash, relay_category::broadcasted);
|
|
}
|
|
return spent;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
void tx_memory_pool::lock() const
|
|
{
|
|
m_transactions_lock.lock();
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
void tx_memory_pool::unlock() const
|
|
{
|
|
m_transactions_lock.unlock();
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::check_tx_inputs(const std::function<cryptonote::transaction&(void)> &get_tx, const crypto::hash &txid, uint64_t &max_used_block_height, crypto::hash &max_used_block_id, tx_verification_context &tvc, bool kept_by_block) const
|
|
{
|
|
if (!kept_by_block)
|
|
{
|
|
const std::unordered_map<crypto::hash, std::tuple<bool, tx_verification_context, uint64_t, crypto::hash>>::const_iterator i = m_input_cache.find(txid);
|
|
if (i != m_input_cache.end())
|
|
{
|
|
max_used_block_height = std::get<2>(i->second);
|
|
max_used_block_id = std::get<3>(i->second);
|
|
tvc = std::get<1>(i->second);
|
|
return std::get<0>(i->second);
|
|
}
|
|
}
|
|
bool ret = m_blockchain.check_tx_inputs(get_tx(), max_used_block_height, max_used_block_id, tvc, kept_by_block);
|
|
if (!kept_by_block)
|
|
m_input_cache.insert(std::make_pair(txid, std::make_tuple(ret, tvc, max_used_block_height, max_used_block_id)));
|
|
return ret;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::is_transaction_ready_to_go(txpool_tx_meta_t& txd, const crypto::hash &txid, const cryptonote::blobdata &txblob, transaction &tx) const
|
|
{
|
|
struct transction_parser
|
|
{
|
|
transction_parser(const cryptonote::blobdata &txblob, const crypto::hash &txid, transaction &tx): txblob(txblob), txid(txid), tx(tx), parsed(false) {}
|
|
cryptonote::transaction &operator()()
|
|
{
|
|
if (!parsed)
|
|
{
|
|
if (!parse_and_validate_tx_from_blob(txblob, tx))
|
|
throw std::runtime_error("failed to parse transaction blob");
|
|
tx.set_hash(txid);
|
|
parsed = true;
|
|
}
|
|
return tx;
|
|
}
|
|
const cryptonote::blobdata &txblob;
|
|
const crypto::hash &txid;
|
|
transaction &tx;
|
|
bool parsed;
|
|
} lazy_tx(txblob, txid, tx);
|
|
|
|
//not the best implementation at this time, sorry :(
|
|
//check is ring_signature already checked ?
|
|
if(txd.max_used_block_id == null_hash)
|
|
{//not checked, lets try to check
|
|
|
|
if(txd.last_failed_id != null_hash && m_blockchain.get_current_blockchain_height() > txd.last_failed_height && txd.last_failed_id == m_blockchain.get_block_id_by_height(txd.last_failed_height))
|
|
return false;//we already sure that this tx is broken for this height
|
|
|
|
tx_verification_context tvc;
|
|
if(!check_tx_inputs([&lazy_tx]()->cryptonote::transaction&{ return lazy_tx(); }, txid, txd.max_used_block_height, txd.max_used_block_id, tvc))
|
|
{
|
|
txd.last_failed_height = m_blockchain.get_current_blockchain_height()-1;
|
|
txd.last_failed_id = m_blockchain.get_block_id_by_height(txd.last_failed_height);
|
|
return false;
|
|
}
|
|
}else
|
|
{
|
|
if(txd.max_used_block_height >= m_blockchain.get_current_blockchain_height())
|
|
return false;
|
|
if(true)
|
|
{
|
|
//if we already failed on this height and id, skip actual ring signature check
|
|
if(txd.last_failed_id == m_blockchain.get_block_id_by_height(txd.last_failed_height))
|
|
return false;
|
|
//check ring signature again, it is possible (with very small chance) that this transaction become again valid
|
|
tx_verification_context tvc;
|
|
if(!check_tx_inputs([&lazy_tx]()->cryptonote::transaction&{ return lazy_tx(); }, txid, txd.max_used_block_height, txd.max_used_block_id, tvc))
|
|
{
|
|
txd.last_failed_height = m_blockchain.get_current_blockchain_height()-1;
|
|
txd.last_failed_id = m_blockchain.get_block_id_by_height(txd.last_failed_height);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
//if we here, transaction seems valid, but, anyway, check for key_images collisions with blockchain, just to be sure
|
|
if(m_blockchain.have_tx_keyimges_as_spent(lazy_tx()))
|
|
{
|
|
txd.double_spend_seen = true;
|
|
return false;
|
|
}
|
|
|
|
//transaction is ok.
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::have_key_images(const std::unordered_set<crypto::key_image>& k_images, const transaction_prefix& tx)
|
|
{
|
|
for(size_t i = 0; i!= tx.vin.size(); i++)
|
|
{
|
|
CHECKED_GET_SPECIFIC_VARIANT(tx.vin[i], const txin_to_key, itk, false);
|
|
if(k_images.count(itk.k_image))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::append_key_images(std::unordered_set<crypto::key_image>& k_images, const transaction_prefix& tx)
|
|
{
|
|
for(size_t i = 0; i!= tx.vin.size(); i++)
|
|
{
|
|
CHECKED_GET_SPECIFIC_VARIANT(tx.vin[i], const txin_to_key, itk, false);
|
|
auto i_res = k_images.insert(itk.k_image);
|
|
CHECK_AND_ASSERT_MES(i_res.second, false, "internal error: key images pool cache - inserted duplicate image in set: " << itk.k_image);
|
|
}
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
void tx_memory_pool::mark_double_spend(const transaction &tx)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
bool changed = false;
|
|
LockedTXN lock(m_blockchain.get_db());
|
|
for(size_t i = 0; i!= tx.vin.size(); i++)
|
|
{
|
|
CHECKED_GET_SPECIFIC_VARIANT(tx.vin[i], const txin_to_key, itk, void());
|
|
const key_images_container::const_iterator it = m_spent_key_images.find(itk.k_image);
|
|
if (it != m_spent_key_images.end())
|
|
{
|
|
for (const crypto::hash &txid: it->second)
|
|
{
|
|
txpool_tx_meta_t meta;
|
|
if (!m_blockchain.get_txpool_tx_meta(txid, meta))
|
|
{
|
|
MERROR("Failed to find tx meta in txpool");
|
|
// continue, not fatal
|
|
continue;
|
|
}
|
|
if (!meta.double_spend_seen)
|
|
{
|
|
MDEBUG("Marking " << txid << " as double spending " << itk.k_image);
|
|
meta.double_spend_seen = true;
|
|
changed = true;
|
|
try
|
|
{
|
|
m_blockchain.update_txpool_tx(txid, meta);
|
|
}
|
|
catch (const std::exception &e)
|
|
{
|
|
MERROR("Failed to update tx meta: " << e.what());
|
|
// continue, not fatal
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
lock.commit();
|
|
if (changed)
|
|
++m_cookie;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
std::string tx_memory_pool::print_pool(bool short_format) const
|
|
{
|
|
std::stringstream ss;
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
m_blockchain.for_all_txpool_txes([&ss, short_format](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *txblob) {
|
|
ss << "id: " << txid << std::endl;
|
|
if (!short_format) {
|
|
cryptonote::transaction tx;
|
|
if (!(meta.pruned ? parse_and_validate_tx_base_from_blob(*txblob, tx) : parse_and_validate_tx_from_blob(*txblob, tx)))
|
|
{
|
|
MERROR("Failed to parse tx from txpool");
|
|
return true; // continue
|
|
}
|
|
ss << obj_to_json_str(tx) << std::endl;
|
|
}
|
|
ss << "blob_size: " << (short_format ? "-" : std::to_string(txblob->size())) << std::endl
|
|
<< "weight: " << meta.weight << std::endl
|
|
<< "fee: " << print_money(meta.fee) << std::endl
|
|
<< "kept_by_block: " << (meta.kept_by_block ? 'T' : 'F') << std::endl
|
|
<< "is_local" << (meta.is_local ? 'T' : 'F') << std::endl
|
|
<< "double_spend_seen: " << (meta.double_spend_seen ? 'T' : 'F') << std::endl
|
|
<< "max_used_block_height: " << meta.max_used_block_height << std::endl
|
|
<< "max_used_block_id: " << meta.max_used_block_id << std::endl
|
|
<< "last_failed_height: " << meta.last_failed_height << std::endl
|
|
<< "last_failed_id: " << meta.last_failed_id << std::endl;
|
|
return true;
|
|
}, !short_format, relay_category::all);
|
|
|
|
return ss.str();
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
//TODO: investigate whether boolean return is appropriate
|
|
bool tx_memory_pool::fill_block_template(block &bl, size_t median_weight, uint64_t already_generated_coins, size_t &total_weight, uint64_t &fee, uint64_t &expected_reward, uint8_t version)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
|
|
uint64_t best_coinbase = 0, coinbase = 0;
|
|
total_weight = 0;
|
|
fee = 0;
|
|
|
|
//baseline empty block
|
|
if (!get_block_reward(median_weight, total_weight, already_generated_coins, best_coinbase, version))
|
|
{
|
|
MERROR("Failed to get block reward for empty block");
|
|
return false;
|
|
}
|
|
|
|
|
|
size_t max_total_weight_pre_v5 = (130 * median_weight) / 100 - CRYPTONOTE_COINBASE_BLOB_RESERVED_SIZE;
|
|
size_t max_total_weight_v5 = 2 * median_weight - CRYPTONOTE_COINBASE_BLOB_RESERVED_SIZE;
|
|
size_t max_total_weight = version >= 5 ? max_total_weight_v5 : max_total_weight_pre_v5;
|
|
std::unordered_set<crypto::key_image> k_images;
|
|
|
|
LOG_PRINT_L2("Filling block template, median weight " << median_weight << ", " << m_txs_by_fee_and_receive_time.size() << " txes in the pool");
|
|
|
|
LockedTXN lock(m_blockchain.get_db());
|
|
|
|
auto sorted_it = m_txs_by_fee_and_receive_time.begin();
|
|
for (; sorted_it != m_txs_by_fee_and_receive_time.end(); ++sorted_it)
|
|
{
|
|
txpool_tx_meta_t meta;
|
|
if (!m_blockchain.get_txpool_tx_meta(sorted_it->second, meta) && !meta.matches(relay_category::legacy))
|
|
{
|
|
MERROR(" failed to find tx meta");
|
|
continue;
|
|
}
|
|
LOG_PRINT_L2("Considering " << sorted_it->second << ", weight " << meta.weight << ", current block weight " << total_weight << "/" << max_total_weight << ", current coinbase " << print_money(best_coinbase));
|
|
|
|
if (meta.pruned)
|
|
{
|
|
LOG_PRINT_L2(" tx is pruned");
|
|
continue;
|
|
}
|
|
|
|
// Can not exceed maximum block weight
|
|
if (max_total_weight < total_weight + meta.weight)
|
|
{
|
|
LOG_PRINT_L2(" would exceed maximum block weight");
|
|
continue;
|
|
}
|
|
|
|
// start using the optimal filling algorithm from v5
|
|
if (version >= 5)
|
|
{
|
|
// If we're getting lower coinbase tx,
|
|
// stop including more tx
|
|
uint64_t block_reward;
|
|
if(!get_block_reward(median_weight, total_weight + meta.weight, already_generated_coins, block_reward, version))
|
|
{
|
|
LOG_PRINT_L2(" would exceed maximum block weight");
|
|
continue;
|
|
}
|
|
coinbase = block_reward + fee + meta.fee;
|
|
if (coinbase < template_accept_threshold(best_coinbase))
|
|
{
|
|
LOG_PRINT_L2(" would decrease coinbase to " << print_money(coinbase));
|
|
continue;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// If we've exceeded the penalty free weight,
|
|
// stop including more tx
|
|
if (total_weight > median_weight)
|
|
{
|
|
LOG_PRINT_L2(" would exceed median block weight");
|
|
break;
|
|
}
|
|
}
|
|
|
|
// "local" and "stem" txes are filtered above
|
|
cryptonote::blobdata txblob = m_blockchain.get_txpool_tx_blob(sorted_it->second, relay_category::all);
|
|
|
|
cryptonote::transaction tx;
|
|
|
|
// Skip transactions that are not ready to be
|
|
// included into the blockchain or that are
|
|
// missing key images
|
|
const cryptonote::txpool_tx_meta_t original_meta = meta;
|
|
bool ready = false;
|
|
try
|
|
{
|
|
ready = is_transaction_ready_to_go(meta, sorted_it->second, txblob, tx);
|
|
}
|
|
catch (const std::exception &e)
|
|
{
|
|
MERROR("Failed to check transaction readiness: " << e.what());
|
|
// continue, not fatal
|
|
}
|
|
if (memcmp(&original_meta, &meta, sizeof(meta)))
|
|
{
|
|
try
|
|
{
|
|
m_blockchain.update_txpool_tx(sorted_it->second, meta);
|
|
}
|
|
catch (const std::exception &e)
|
|
{
|
|
MERROR("Failed to update tx meta: " << e.what());
|
|
// continue, not fatal
|
|
}
|
|
}
|
|
if (!ready)
|
|
{
|
|
LOG_PRINT_L2(" not ready to go");
|
|
continue;
|
|
}
|
|
if (have_key_images(k_images, tx))
|
|
{
|
|
LOG_PRINT_L2(" key images already seen");
|
|
continue;
|
|
}
|
|
|
|
bl.tx_hashes.push_back(sorted_it->second);
|
|
total_weight += meta.weight;
|
|
fee += meta.fee;
|
|
best_coinbase = coinbase;
|
|
append_key_images(k_images, tx);
|
|
LOG_PRINT_L2(" added, new block weight " << total_weight << "/" << max_total_weight << ", coinbase " << print_money(best_coinbase));
|
|
}
|
|
lock.commit();
|
|
|
|
expected_reward = best_coinbase;
|
|
LOG_PRINT_L2("Block template filled with " << bl.tx_hashes.size() << " txes, weight "
|
|
<< total_weight << "/" << max_total_weight << ", coinbase " << print_money(best_coinbase)
|
|
<< " (including " << print_money(fee) << " in fees)");
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
size_t tx_memory_pool::validate(uint8_t version)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
size_t tx_weight_limit = get_transaction_weight_limit(version);
|
|
std::unordered_set<crypto::hash> remove;
|
|
|
|
m_txpool_weight = 0;
|
|
m_blockchain.for_all_txpool_txes([this, &remove, tx_weight_limit](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata*) {
|
|
m_txpool_weight += meta.weight;
|
|
if (meta.weight > tx_weight_limit) {
|
|
LOG_PRINT_L1("Transaction " << txid << " is too big (" << meta.weight << " bytes), removing it from pool");
|
|
remove.insert(txid);
|
|
}
|
|
else if (m_blockchain.have_tx(txid)) {
|
|
LOG_PRINT_L1("Transaction " << txid << " is in the blockchain, removing it from pool");
|
|
remove.insert(txid);
|
|
}
|
|
return true;
|
|
}, false, relay_category::all);
|
|
|
|
size_t n_removed = 0;
|
|
if (!remove.empty())
|
|
{
|
|
LockedTXN lock(m_blockchain.get_db());
|
|
for (const crypto::hash &txid: remove)
|
|
{
|
|
try
|
|
{
|
|
cryptonote::blobdata txblob = m_blockchain.get_txpool_tx_blob(txid, relay_category::all);
|
|
cryptonote::transaction tx;
|
|
if (!parse_and_validate_tx_from_blob(txblob, tx)) // remove pruned ones on startup, they're meant to be temporary
|
|
{
|
|
MERROR("Failed to parse tx from txpool");
|
|
continue;
|
|
}
|
|
// remove tx from db first
|
|
m_blockchain.remove_txpool_tx(txid);
|
|
m_txpool_weight -= get_transaction_weight(tx, txblob.size());
|
|
remove_transaction_keyimages(tx, txid);
|
|
auto sorted_it = find_tx_in_sorted_container(txid);
|
|
if (sorted_it == m_txs_by_fee_and_receive_time.end())
|
|
{
|
|
LOG_PRINT_L1("Removing tx " << txid << " from tx pool, but it was not found in the sorted txs container!");
|
|
}
|
|
else
|
|
{
|
|
m_txs_by_fee_and_receive_time.erase(sorted_it);
|
|
}
|
|
++n_removed;
|
|
}
|
|
catch (const std::exception &e)
|
|
{
|
|
MERROR("Failed to remove invalid tx from pool");
|
|
// continue
|
|
}
|
|
}
|
|
lock.commit();
|
|
}
|
|
if (n_removed > 0)
|
|
++m_cookie;
|
|
return n_removed;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::init(size_t max_txpool_weight)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
CRITICAL_REGION_LOCAL1(m_blockchain);
|
|
|
|
m_txpool_max_weight = max_txpool_weight ? max_txpool_weight : DEFAULT_TXPOOL_MAX_WEIGHT;
|
|
m_txs_by_fee_and_receive_time.clear();
|
|
m_spent_key_images.clear();
|
|
m_txpool_weight = 0;
|
|
std::vector<crypto::hash> remove;
|
|
|
|
// first add the not kept by block, then the kept by block,
|
|
// to avoid rejection due to key image collision
|
|
for (int pass = 0; pass < 2; ++pass)
|
|
{
|
|
const bool kept = pass == 1;
|
|
bool r = m_blockchain.for_all_txpool_txes([this, &remove, kept](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *bd) {
|
|
if (!!kept != !!meta.kept_by_block)
|
|
return true;
|
|
cryptonote::transaction_prefix tx;
|
|
if (!parse_and_validate_tx_prefix_from_blob(*bd, tx))
|
|
{
|
|
MWARNING("Failed to parse tx from txpool, removing");
|
|
remove.push_back(txid);
|
|
return true;
|
|
}
|
|
if (!insert_key_images(tx, txid, meta.get_relay_method()))
|
|
{
|
|
MFATAL("Failed to insert key images from txpool tx");
|
|
return false;
|
|
}
|
|
m_txs_by_fee_and_receive_time.emplace(std::pair<double, time_t>(meta.fee / (double)meta.weight, meta.receive_time), txid);
|
|
m_txpool_weight += meta.weight;
|
|
return true;
|
|
}, true, relay_category::all);
|
|
if (!r)
|
|
return false;
|
|
}
|
|
if (!remove.empty())
|
|
{
|
|
LockedTXN lock(m_blockchain.get_db());
|
|
for (const auto &txid: remove)
|
|
{
|
|
try
|
|
{
|
|
m_blockchain.remove_txpool_tx(txid);
|
|
}
|
|
catch (const std::exception &e)
|
|
{
|
|
MWARNING("Failed to remove corrupt transaction: " << txid);
|
|
// ignore error
|
|
}
|
|
}
|
|
lock.commit();
|
|
}
|
|
|
|
m_cookie = 0;
|
|
|
|
// Ignore deserialization error
|
|
return true;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::deinit()
|
|
{
|
|
return true;
|
|
}
|
|
}
|