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// Copyright (c) 2018-2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <addrdb.h>
#include <banman.h>
#include <blockfilter.h>
#include <chain.h>
#include <chainparams.h>
#include <common/args.h>
#include <deploymentstatus.h>
#include <external_signer.h>
#include <index/blockfilterindex.h>
#include <init.h>
#include <interfaces/chain.h>
#include <interfaces/handler.h>
#include <interfaces/node.h>
#include <interfaces/wallet.h>
#include <kernel/chain.h>
#include <kernel/context.h>
#include <kernel/mempool_entry.h>
#include <logging.h>
#include <mapport.h>
#include <net.h>
#include <net_processing.h>
#include <netaddress.h>
#include <netbase.h>
#include <node/blockstorage.h>
#include <node/coin.h>
#include <node/context.h>
#include <node/interface_ui.h>
#include <node/mini_miner.h>
#include <node/transaction.h>
#include <policy/feerate.h>
#include <policy/fees.h>
#include <policy/policy.h>
#include <policy/rbf.h>
#include <policy/settings.h>
#include <primitives/block.h>
#include <primitives/transaction.h>
#include <rpc/protocol.h>
#include <rpc/server.h>
#include <support/allocators/secure.h>
#include <sync.h>
#include <txmempool.h>
#include <uint256.h>
#include <univalue.h>
#include <util/check.h>
#include <util/result.h>
#include <util/signalinterrupt.h>
#include <util/string.h>
#include <util/translation.h>
#include <validation.h>
#include <validationinterface.h>
#include <warnings.h>
#include <config/bitcoin-config.h> // IWYU pragma: keep
#include <any>
#include <memory>
#include <optional>
#include <utility>
#include <boost/signals2/signal.hpp>
using interfaces::BlockTip;
using interfaces::Chain;
using interfaces::FoundBlock;
using interfaces::Handler;
using interfaces::MakeSignalHandler;
using interfaces::Node;
using interfaces::WalletLoader;
namespace node {
// All members of the classes in this namespace are intentionally public, as the
// classes themselves are private.
namespace {
#ifdef ENABLE_EXTERNAL_SIGNER
class ExternalSignerImpl : public interfaces::ExternalSigner
{
public:
ExternalSignerImpl(::ExternalSigner signer) : m_signer(std::move(signer)) {}
std::string getName() override { return m_signer.m_name; }
::ExternalSigner m_signer;
};
#endif
class NodeImpl : public Node
{
public:
explicit NodeImpl(NodeContext& context) { setContext(&context); }
void initLogging() override { InitLogging(args()); }
void initParameterInteraction() override { InitParameterInteraction(args()); }
bilingual_str getWarnings() override { return Join(GetWarnings(), Untranslated("<hr />")); }
int getExitStatus() override { return Assert(m_context)->exit_status.load(); }
uint32_t getLogCategories() override { return LogInstance().GetCategoryMask(); }
bool baseInitialize() override
{
if (!AppInitBasicSetup(args(), Assert(context())->exit_status)) return false;
if (!AppInitParameterInteraction(args())) return false;
m_context->kernel = std::make_unique<kernel::Context>();
m_context->ecc_context = std::make_unique<ECC_Context>();
if (!AppInitSanityChecks(*m_context->kernel)) return false;
if (!AppInitLockDataDirectory()) return false;
if (!AppInitInterfaces(*m_context)) return false;
return true;
}
bool appInitMain(interfaces::BlockAndHeaderTipInfo* tip_info) override
{
if (AppInitMain(*m_context, tip_info)) return true;
// Error during initialization, set exit status before continue
m_context->exit_status.store(EXIT_FAILURE);
return false;
}
void appShutdown() override
{
Interrupt(*m_context);
Shutdown(*m_context);
}
void startShutdown() override
{
if (!(*Assert(Assert(m_context)->shutdown))()) {
LogError("Failed to send shutdown signal\n");
}
// Stop RPC for clean shutdown if any of waitfor* commands is executed.
if (args().GetBoolArg("-server", false)) {
InterruptRPC();
StopRPC();
}
}
bool shutdownRequested() override { return ShutdownRequested(*Assert(m_context)); };
bool isSettingIgnored(const std::string& name) override
{
bool ignored = false;
args().LockSettings([&](common::Settings& settings) {
if (auto* options = common::FindKey(settings.command_line_options, name)) {
ignored = !options->empty();
}
});
return ignored;
}
common::SettingsValue getPersistentSetting(const std::string& name) override { return args().GetPersistentSetting(name); }
void updateRwSetting(const std::string& name, const common::SettingsValue& value) override
{
args().LockSettings([&](common::Settings& settings) {
if (value.isNull()) {
settings.rw_settings.erase(name);
} else {
settings.rw_settings[name] = value;
}
});
args().WriteSettingsFile();
}
void forceSetting(const std::string& name, const common::SettingsValue& value) override
{
args().LockSettings([&](common::Settings& settings) {
if (value.isNull()) {
settings.forced_settings.erase(name);
} else {
settings.forced_settings[name] = value;
}
});
}
void resetSettings() override
{
args().WriteSettingsFile(/*errors=*/nullptr, /*backup=*/true);
args().LockSettings([&](common::Settings& settings) {
settings.rw_settings.clear();
});
args().WriteSettingsFile();
}
void mapPort(bool use_upnp, bool use_natpmp) override { StartMapPort(use_upnp, use_natpmp); }
bool getProxy(Network net, Proxy& proxy_info) override { return GetProxy(net, proxy_info); }
size_t getNodeCount(ConnectionDirection flags) override
{
return m_context->connman ? m_context->connman->GetNodeCount(flags) : 0;
}
bool getNodesStats(NodesStats& stats) override
{
stats.clear();
if (m_context->connman) {
std::vector<CNodeStats> stats_temp;
m_context->connman->GetNodeStats(stats_temp);
stats.reserve(stats_temp.size());
for (auto& node_stats_temp : stats_temp) {
stats.emplace_back(std::move(node_stats_temp), false, CNodeStateStats());
}
// Try to retrieve the CNodeStateStats for each node.
if (m_context->peerman) {
TRY_LOCK(::cs_main, lockMain);
if (lockMain) {
for (auto& node_stats : stats) {
std::get<1>(node_stats) =
m_context->peerman->GetNodeStateStats(std::get<0>(node_stats).nodeid, std::get<2>(node_stats));
}
}
}
return true;
}
return false;
}
bool getBanned(banmap_t& banmap) override
{
if (m_context->banman) {
m_context->banman->GetBanned(banmap);
return true;
}
return false;
}
bool ban(const CNetAddr& net_addr, int64_t ban_time_offset) override
{
if (m_context->banman) {
m_context->banman->Ban(net_addr, ban_time_offset);
return true;
}
return false;
}
bool unban(const CSubNet& ip) override
{
if (m_context->banman) {
m_context->banman->Unban(ip);
return true;
}
return false;
}
bool disconnectByAddress(const CNetAddr& net_addr) override
{
if (m_context->connman) {
return m_context->connman->DisconnectNode(net_addr);
}
return false;
}
bool disconnectById(NodeId id) override
{
if (m_context->connman) {
return m_context->connman->DisconnectNode(id);
}
return false;
}
std::vector<std::unique_ptr<interfaces::ExternalSigner>> listExternalSigners() override
{
#ifdef ENABLE_EXTERNAL_SIGNER
std::vector<ExternalSigner> signers = {};
const std::string command = args().GetArg("-signer", "");
if (command == "") return {};
ExternalSigner::Enumerate(command, signers, Params().GetChainTypeString());
std::vector<std::unique_ptr<interfaces::ExternalSigner>> result;
result.reserve(signers.size());
for (auto& signer : signers) {
result.emplace_back(std::make_unique<ExternalSignerImpl>(std::move(signer)));
}
return result;
#else
// This result is indistinguishable from a successful call that returns
// no signers. For the current GUI this doesn't matter, because the wallet
// creation dialog disables the external signer checkbox in both
// cases. The return type could be changed to std::optional<std::vector>
// (or something that also includes error messages) if this distinction
// becomes important.
return {};
#endif // ENABLE_EXTERNAL_SIGNER
}
int64_t getTotalBytesRecv() override { return m_context->connman ? m_context->connman->GetTotalBytesRecv() : 0; }
int64_t getTotalBytesSent() override { return m_context->connman ? m_context->connman->GetTotalBytesSent() : 0; }
size_t getMempoolSize() override { return m_context->mempool ? m_context->mempool->size() : 0; }
size_t getMempoolDynamicUsage() override { return m_context->mempool ? m_context->mempool->DynamicMemoryUsage() : 0; }
bool getHeaderTip(int& height, int64_t& block_time) override
{
LOCK(::cs_main);
auto best_header = chainman().m_best_header;
if (best_header) {
height = best_header->nHeight;
block_time = best_header->GetBlockTime();
return true;
}
return false;
}
int getNumBlocks() override
{
LOCK(::cs_main);
return chainman().ActiveChain().Height();
}
uint256 getBestBlockHash() override
{
const CBlockIndex* tip = WITH_LOCK(::cs_main, return chainman().ActiveChain().Tip());
return tip ? tip->GetBlockHash() : chainman().GetParams().GenesisBlock().GetHash();
}
int64_t getLastBlockTime() override
{
LOCK(::cs_main);
if (chainman().ActiveChain().Tip()) {
return chainman().ActiveChain().Tip()->GetBlockTime();
}
return chainman().GetParams().GenesisBlock().GetBlockTime(); // Genesis block's time of current network
}
double getVerificationProgress() override
{
return GuessVerificationProgress(chainman().GetParams().TxData(), WITH_LOCK(::cs_main, return chainman().ActiveChain().Tip()));
}
bool isInitialBlockDownload() override
{
return chainman().IsInitialBlockDownload();
}
bool isLoadingBlocks() override { return chainman().m_blockman.LoadingBlocks(); }
void setNetworkActive(bool active) override
{
if (m_context->connman) {
m_context->connman->SetNetworkActive(active);
}
}
bool getNetworkActive() override { return m_context->connman && m_context->connman->GetNetworkActive(); }
CFeeRate getDustRelayFee() override
{
if (!m_context->mempool) return CFeeRate{DUST_RELAY_TX_FEE};
return m_context->mempool->m_opts.dust_relay_feerate;
}
UniValue executeRpc(const std::string& command, const UniValue& params, const std::string& uri) override
{
JSONRPCRequest req;
req.context = m_context;
req.params = params;
req.strMethod = command;
req.URI = uri;
return ::tableRPC.execute(req);
}
std::vector<std::string> listRpcCommands() override { return ::tableRPC.listCommands(); }
void rpcSetTimerInterfaceIfUnset(RPCTimerInterface* iface) override { RPCSetTimerInterfaceIfUnset(iface); }
void rpcUnsetTimerInterface(RPCTimerInterface* iface) override { RPCUnsetTimerInterface(iface); }
std::optional<Coin> getUnspentOutput(const COutPoint& output) override
{
LOCK(::cs_main);
Coin coin;
if (chainman().ActiveChainstate().CoinsTip().GetCoin(output, coin)) return coin;
return {};
}
TransactionError broadcastTransaction(CTransactionRef tx, CAmount max_tx_fee, std::string& err_string) override
{
return BroadcastTransaction(*m_context, std::move(tx), err_string, max_tx_fee, /*relay=*/ true, /*wait_callback=*/ false);
}
WalletLoader& walletLoader() override
{
return *Assert(m_context->wallet_loader);
}
std::unique_ptr<Handler> handleInitMessage(InitMessageFn fn) override
{
return MakeSignalHandler(::uiInterface.InitMessage_connect(fn));
}
std::unique_ptr<Handler> handleMessageBox(MessageBoxFn fn) override
{
return MakeSignalHandler(::uiInterface.ThreadSafeMessageBox_connect(fn));
}
std::unique_ptr<Handler> handleQuestion(QuestionFn fn) override
{
return MakeSignalHandler(::uiInterface.ThreadSafeQuestion_connect(fn));
}
std::unique_ptr<Handler> handleShowProgress(ShowProgressFn fn) override
{
return MakeSignalHandler(::uiInterface.ShowProgress_connect(fn));
}
std::unique_ptr<Handler> handleInitWallet(InitWalletFn fn) override
{
return MakeSignalHandler(::uiInterface.InitWallet_connect(fn));
}
std::unique_ptr<Handler> handleNotifyNumConnectionsChanged(NotifyNumConnectionsChangedFn fn) override
{
return MakeSignalHandler(::uiInterface.NotifyNumConnectionsChanged_connect(fn));
}
std::unique_ptr<Handler> handleNotifyNetworkActiveChanged(NotifyNetworkActiveChangedFn fn) override
{
return MakeSignalHandler(::uiInterface.NotifyNetworkActiveChanged_connect(fn));
}
std::unique_ptr<Handler> handleNotifyAlertChanged(NotifyAlertChangedFn fn) override
{
return MakeSignalHandler(::uiInterface.NotifyAlertChanged_connect(fn));
}
std::unique_ptr<Handler> handleBannedListChanged(BannedListChangedFn fn) override
{
return MakeSignalHandler(::uiInterface.BannedListChanged_connect(fn));
}
std::unique_ptr<Handler> handleNotifyBlockTip(NotifyBlockTipFn fn) override
{
return MakeSignalHandler(::uiInterface.NotifyBlockTip_connect([fn](SynchronizationState sync_state, const CBlockIndex* block) {
fn(sync_state, BlockTip{block->nHeight, block->GetBlockTime(), block->GetBlockHash()},
GuessVerificationProgress(Params().TxData(), block));
}));
}
std::unique_ptr<Handler> handleNotifyHeaderTip(NotifyHeaderTipFn fn) override
{
return MakeSignalHandler(
::uiInterface.NotifyHeaderTip_connect([fn](SynchronizationState sync_state, int64_t height, int64_t timestamp, bool presync) {
fn(sync_state, BlockTip{(int)height, timestamp, uint256{}}, presync);
}));
}
NodeContext* context() override { return m_context; }
void setContext(NodeContext* context) override
{
m_context = context;
}
ArgsManager& args() { return *Assert(Assert(m_context)->args); }
ChainstateManager& chainman() { return *Assert(m_context->chainman); }
NodeContext* m_context{nullptr};
};
// NOLINTNEXTLINE(misc-no-recursion)
bool FillBlock(const CBlockIndex* index, const FoundBlock& block, UniqueLock<RecursiveMutex>& lock, const CChain& active, const BlockManager& blockman)
{
if (!index) return false;
if (block.m_hash) *block.m_hash = index->GetBlockHash();
if (block.m_height) *block.m_height = index->nHeight;
if (block.m_time) *block.m_time = index->GetBlockTime();
if (block.m_max_time) *block.m_max_time = index->GetBlockTimeMax();
if (block.m_mtp_time) *block.m_mtp_time = index->GetMedianTimePast();
if (block.m_in_active_chain) *block.m_in_active_chain = active[index->nHeight] == index;
if (block.m_locator) { *block.m_locator = GetLocator(index); }
if (block.m_next_block) FillBlock(active[index->nHeight] == index ? active[index->nHeight + 1] : nullptr, *block.m_next_block, lock, active, blockman);
if (block.m_data) {
REVERSE_LOCK(lock);
if (!blockman.ReadBlockFromDisk(*block.m_data, *index)) block.m_data->SetNull();
}
block.found = true;
return true;
}
class NotificationsProxy : public CValidationInterface
{
public:
explicit NotificationsProxy(std::shared_ptr<Chain::Notifications> notifications)
: m_notifications(std::move(notifications)) {}
virtual ~NotificationsProxy() = default;
void TransactionAddedToMempool(const NewMempoolTransactionInfo& tx, uint64_t mempool_sequence) override
{
m_notifications->transactionAddedToMempool(tx.info.m_tx);
}
void TransactionRemovedFromMempool(const CTransactionRef& tx, MemPoolRemovalReason reason, uint64_t mempool_sequence) override
{
m_notifications->transactionRemovedFromMempool(tx, reason);
}
void BlockConnected(ChainstateRole role, const std::shared_ptr<const CBlock>& block, const CBlockIndex* index) override
{
m_notifications->blockConnected(role, kernel::MakeBlockInfo(index, block.get()));
}
void BlockDisconnected(const std::shared_ptr<const CBlock>& block, const CBlockIndex* index) override
{
m_notifications->blockDisconnected(kernel::MakeBlockInfo(index, block.get()));
}
void UpdatedBlockTip(const CBlockIndex* index, const CBlockIndex* fork_index, bool is_ibd) override
{
m_notifications->updatedBlockTip();
}
void ChainStateFlushed(ChainstateRole role, const CBlockLocator& locator) override {
m_notifications->chainStateFlushed(role, locator);
}
std::shared_ptr<Chain::Notifications> m_notifications;
};
class NotificationsHandlerImpl : public Handler
{
public:
explicit NotificationsHandlerImpl(ValidationSignals& signals, std::shared_ptr<Chain::Notifications> notifications)
: m_signals{signals}, m_proxy{std::make_shared<NotificationsProxy>(std::move(notifications))}
{
m_signals.RegisterSharedValidationInterface(m_proxy);
}
~NotificationsHandlerImpl() override { disconnect(); }
void disconnect() override
{
if (m_proxy) {
m_signals.UnregisterSharedValidationInterface(m_proxy);
m_proxy.reset();
}
}
ValidationSignals& m_signals;
std::shared_ptr<NotificationsProxy> m_proxy;
};
class RpcHandlerImpl : public Handler
{
public:
explicit RpcHandlerImpl(const CRPCCommand& command) : m_command(command), m_wrapped_command(&command)
{
m_command.actor = [this](const JSONRPCRequest& request, UniValue& result, bool last_handler) {
if (!m_wrapped_command) return false;
try {
return m_wrapped_command->actor(request, result, last_handler);
} catch (const UniValue& e) {
// If this is not the last handler and a wallet not found
// exception was thrown, return false so the next handler can
// try to handle the request. Otherwise, reraise the exception.
if (!last_handler) {
const UniValue& code = e["code"];
if (code.isNum() && code.getInt<int>() == RPC_WALLET_NOT_FOUND) {
return false;
}
}
throw;
}
};
::tableRPC.appendCommand(m_command.name, &m_command);
}
void disconnect() final
{
if (m_wrapped_command) {
m_wrapped_command = nullptr;
::tableRPC.removeCommand(m_command.name, &m_command);
}
}
~RpcHandlerImpl() override { disconnect(); }
CRPCCommand m_command;
const CRPCCommand* m_wrapped_command;
};
class ChainImpl : public Chain
{
public:
explicit ChainImpl(NodeContext& node) : m_node(node) {}
std::optional<int> getHeight() override
{
const int height{WITH_LOCK(::cs_main, return chainman().ActiveChain().Height())};
return height >= 0 ? std::optional{height} : std::nullopt;
}
uint256 getBlockHash(int height) override
{
LOCK(::cs_main);
return Assert(chainman().ActiveChain()[height])->GetBlockHash();
}
bool haveBlockOnDisk(int height) override
{
LOCK(::cs_main);
const CBlockIndex* block{chainman().ActiveChain()[height]};
return block && ((block->nStatus & BLOCK_HAVE_DATA) != 0) && block->nTx > 0;
}
CBlockLocator getTipLocator() override
{
LOCK(::cs_main);
return chainman().ActiveChain().GetLocator();
}
CBlockLocator getActiveChainLocator(const uint256& block_hash) override
{
LOCK(::cs_main);
const CBlockIndex* index = chainman().m_blockman.LookupBlockIndex(block_hash);
return GetLocator(index);
}
std::optional<int> findLocatorFork(const CBlockLocator& locator) override
{
LOCK(::cs_main);
if (const CBlockIndex* fork = chainman().ActiveChainstate().FindForkInGlobalIndex(locator)) {
return fork->nHeight;
}
return std::nullopt;
}
bool hasBlockFilterIndex(BlockFilterType filter_type) override
{
return GetBlockFilterIndex(filter_type) != nullptr;
}
std::optional<bool> blockFilterMatchesAny(BlockFilterType filter_type, const uint256& block_hash, const GCSFilter::ElementSet& filter_set) override
{
const BlockFilterIndex* block_filter_index{GetBlockFilterIndex(filter_type)};
if (!block_filter_index) return std::nullopt;
BlockFilter filter;
const CBlockIndex* index{WITH_LOCK(::cs_main, return chainman().m_blockman.LookupBlockIndex(block_hash))};
if (index == nullptr || !block_filter_index->LookupFilter(index, filter)) return std::nullopt;
return filter.GetFilter().MatchAny(filter_set);
}
bool findBlock(const uint256& hash, const FoundBlock& block) override
{
WAIT_LOCK(cs_main, lock);
return FillBlock(chainman().m_blockman.LookupBlockIndex(hash), block, lock, chainman().ActiveChain(), chainman().m_blockman);
}
bool findFirstBlockWithTimeAndHeight(int64_t min_time, int min_height, const FoundBlock& block) override
{
WAIT_LOCK(cs_main, lock);
const CChain& active = chainman().ActiveChain();
return FillBlock(active.FindEarliestAtLeast(min_time, min_height), block, lock, active, chainman().m_blockman);
}
bool findAncestorByHeight(const uint256& block_hash, int ancestor_height, const FoundBlock& ancestor_out) override
{
WAIT_LOCK(cs_main, lock);
const CChain& active = chainman().ActiveChain();
if (const CBlockIndex* block = chainman().m_blockman.LookupBlockIndex(block_hash)) {
if (const CBlockIndex* ancestor = block->GetAncestor(ancestor_height)) {
return FillBlock(ancestor, ancestor_out, lock, active, chainman().m_blockman);
}
}
return FillBlock(nullptr, ancestor_out, lock, active, chainman().m_blockman);
}
bool findAncestorByHash(const uint256& block_hash, const uint256& ancestor_hash, const FoundBlock& ancestor_out) override
{
WAIT_LOCK(cs_main, lock);
const CBlockIndex* block = chainman().m_blockman.LookupBlockIndex(block_hash);
const CBlockIndex* ancestor = chainman().m_blockman.LookupBlockIndex(ancestor_hash);
if (block && ancestor && block->GetAncestor(ancestor->nHeight) != ancestor) ancestor = nullptr;
return FillBlock(ancestor, ancestor_out, lock, chainman().ActiveChain(), chainman().m_blockman);
}
bool findCommonAncestor(const uint256& block_hash1, const uint256& block_hash2, const FoundBlock& ancestor_out, const FoundBlock& block1_out, const FoundBlock& block2_out) override
{
WAIT_LOCK(cs_main, lock);
const CChain& active = chainman().ActiveChain();
const CBlockIndex* block1 = chainman().m_blockman.LookupBlockIndex(block_hash1);
const CBlockIndex* block2 = chainman().m_blockman.LookupBlockIndex(block_hash2);
const CBlockIndex* ancestor = block1 && block2 ? LastCommonAncestor(block1, block2) : nullptr;
// Using & instead of && below to avoid short circuiting and leaving
// output uninitialized. Cast bool to int to avoid -Wbitwise-instead-of-logical
// compiler warnings.
return int{FillBlock(ancestor, ancestor_out, lock, active, chainman().m_blockman)} &
int{FillBlock(block1, block1_out, lock, active, chainman().m_blockman)} &
int{FillBlock(block2, block2_out, lock, active, chainman().m_blockman)};
}
void findCoins(std::map<COutPoint, Coin>& coins) override { return FindCoins(m_node, coins); }
double guessVerificationProgress(const uint256& block_hash) override
{
LOCK(::cs_main);
return GuessVerificationProgress(chainman().GetParams().TxData(), chainman().m_blockman.LookupBlockIndex(block_hash));
}
bool hasBlocks(const uint256& block_hash, int min_height, std::optional<int> max_height) override
{
// hasBlocks returns true if all ancestors of block_hash in specified
// range have block data (are not pruned), false if any ancestors in
// specified range are missing data.
//
// For simplicity and robustness, min_height and max_height are only
// used to limit the range, and passing min_height that's too low or
// max_height that's too high will not crash or change the result.
LOCK(::cs_main);
if (const CBlockIndex* block = chainman().m_blockman.LookupBlockIndex(block_hash)) {
if (max_height && block->nHeight >= *max_height) block = block->GetAncestor(*max_height);
for (; block->nStatus & BLOCK_HAVE_DATA; block = block->pprev) {
// Check pprev to not segfault if min_height is too low
if (block->nHeight <= min_height || !block->pprev) return true;
}
}
return false;
}
RBFTransactionState isRBFOptIn(const CTransaction& tx) override
{
if (!m_node.mempool) return IsRBFOptInEmptyMempool(tx);
LOCK(m_node.mempool->cs);
return IsRBFOptIn(tx, *m_node.mempool);
}
bool isInMempool(const uint256& txid) override
{
if (!m_node.mempool) return false;
LOCK(m_node.mempool->cs);
return m_node.mempool->exists(GenTxid::Txid(txid));
}
bool hasDescendantsInMempool(const uint256& txid) override
{
if (!m_node.mempool) return false;
LOCK(m_node.mempool->cs);
const auto entry{m_node.mempool->GetEntry(Txid::FromUint256(txid))};
if (entry == nullptr) return false;
return entry->GetCountWithDescendants() > 1;
}
bool broadcastTransaction(const CTransactionRef& tx,
const CAmount& max_tx_fee,
bool relay,
std::string& err_string) override
{
const TransactionError err = BroadcastTransaction(m_node, tx, err_string, max_tx_fee, relay, /*wait_callback=*/false);
// Chain clients only care about failures to accept the tx to the mempool. Disregard non-mempool related failures.
// Note: this will need to be updated if BroadcastTransactions() is updated to return other non-mempool failures
// that Chain clients do not need to know about.
return TransactionError::OK == err;
}
void getTransactionAncestry(const uint256& txid, size_t& ancestors, size_t& descendants, size_t* ancestorsize, CAmount* ancestorfees) override
{
ancestors = descendants = 0;
if (!m_node.mempool) return;
m_node.mempool->GetTransactionAncestry(txid, ancestors, descendants, ancestorsize, ancestorfees);
}
std::map<COutPoint, CAmount> calculateIndividualBumpFees(const std::vector<COutPoint>& outpoints, const CFeeRate& target_feerate) override
{
if (!m_node.mempool) {
std::map<COutPoint, CAmount> bump_fees;
for (const auto& outpoint : outpoints) {
bump_fees.emplace(outpoint, 0);
}
return bump_fees;
}
return MiniMiner(*m_node.mempool, outpoints).CalculateBumpFees(target_feerate);
}
std::optional<CAmount> calculateCombinedBumpFee(const std::vector<COutPoint>& outpoints, const CFeeRate& target_feerate) override
{
if (!m_node.mempool) {
return 0;
}
return MiniMiner(*m_node.mempool, outpoints).CalculateTotalBumpFees(target_feerate);
}
void getPackageLimits(unsigned int& limit_ancestor_count, unsigned int& limit_descendant_count) override
{
const CTxMemPool::Limits default_limits{};
const CTxMemPool::Limits& limits{m_node.mempool ? m_node.mempool->m_opts.limits : default_limits};
limit_ancestor_count = limits.ancestor_count;
limit_descendant_count = limits.descendant_count;
}
util::Result<void> checkChainLimits(const CTransactionRef& tx) override
{
if (!m_node.mempool) return {};
LockPoints lp;
CTxMemPoolEntry entry(tx, 0, 0, 0, 0, false, 0, lp);
LOCK(m_node.mempool->cs);
return m_node.mempool->CheckPackageLimits({tx}, entry.GetTxSize());
}
CFeeRate estimateSmartFee(int num_blocks, bool conservative, FeeCalculation* calc) override
{
if (!m_node.fee_estimator) return {};
return m_node.fee_estimator->estimateSmartFee(num_blocks, calc, conservative);
}
unsigned int estimateMaxBlocks() override
{
if (!m_node.fee_estimator) return 0;
return m_node.fee_estimator->HighestTargetTracked(FeeEstimateHorizon::LONG_HALFLIFE);
}
CFeeRate mempoolMinFee() override
{
if (!m_node.mempool) return {};
return m_node.mempool->GetMinFee();
}
CFeeRate relayMinFee() override
{
if (!m_node.mempool) return CFeeRate{DEFAULT_MIN_RELAY_TX_FEE};
return m_node.mempool->m_opts.min_relay_feerate;
}
CFeeRate relayIncrementalFee() override
{
if (!m_node.mempool) return CFeeRate{DEFAULT_INCREMENTAL_RELAY_FEE};
return m_node.mempool->m_opts.incremental_relay_feerate;
}
CFeeRate relayDustFee() override
{
if (!m_node.mempool) return CFeeRate{DUST_RELAY_TX_FEE};
return m_node.mempool->m_opts.dust_relay_feerate;
}
bool havePruned() override
{
LOCK(::cs_main);
return chainman().m_blockman.m_have_pruned;
}
bool isReadyToBroadcast() override { return !chainman().m_blockman.LoadingBlocks() && !isInitialBlockDownload(); }
bool isInitialBlockDownload() override
{
return chainman().IsInitialBlockDownload();
}
bool shutdownRequested() override { return ShutdownRequested(m_node); }
void initMessage(const std::string& message) override { ::uiInterface.InitMessage(message); }
void initWarning(const bilingual_str& message) override { InitWarning(message); }
void initError(const bilingual_str& message) override { InitError(message); }
void showProgress(const std::string& title, int progress, bool resume_possible) override
{
::uiInterface.ShowProgress(title, progress, resume_possible);
}
std::unique_ptr<Handler> handleNotifications(std::shared_ptr<Notifications> notifications) override
{
return std::make_unique<NotificationsHandlerImpl>(validation_signals(), std::move(notifications));
}
void waitForNotificationsIfTipChanged(const uint256& old_tip) override
{
if (!old_tip.IsNull() && old_tip == WITH_LOCK(::cs_main, return chainman().ActiveChain().Tip()->GetBlockHash())) return;
validation_signals().SyncWithValidationInterfaceQueue();
}
std::unique_ptr<Handler> handleRpc(const CRPCCommand& command) override
{
return std::make_unique<RpcHandlerImpl>(command);
}
bool rpcEnableDeprecated(const std::string& method) override { return IsDeprecatedRPCEnabled(method); }
void rpcRunLater(const std::string& name, std::function<void()> fn, int64_t seconds) override
{
RPCRunLater(name, std::move(fn), seconds);
}
common::SettingsValue getSetting(const std::string& name) override
{
return args().GetSetting(name);
}
std::vector<common::SettingsValue> getSettingsList(const std::string& name) override
{
return args().GetSettingsList(name);
}
common::SettingsValue getRwSetting(const std::string& name) override
{
common::SettingsValue result;
args().LockSettings([&](const common::Settings& settings) {
if (const common::SettingsValue* value = common::FindKey(settings.rw_settings, name)) {
result = *value;
}
});
return result;
}
bool updateRwSetting(const std::string& name, const common::SettingsValue& value, bool write) override
{
args().LockSettings([&](common::Settings& settings) {
if (value.isNull()) {
settings.rw_settings.erase(name);
} else {
settings.rw_settings[name] = value;
}
});
return !write || args().WriteSettingsFile();
}
void requestMempoolTransactions(Notifications& notifications) override
{
if (!m_node.mempool) return;
LOCK2(::cs_main, m_node.mempool->cs);
for (const CTxMemPoolEntry& entry : m_node.mempool->entryAll()) {
notifications.transactionAddedToMempool(entry.GetSharedTx());
}
}
bool hasAssumedValidChain() override
{
return chainman().IsSnapshotActive();
}
NodeContext* context() override { return &m_node; }
ArgsManager& args() { return *Assert(m_node.args); }
ChainstateManager& chainman() { return *Assert(m_node.chainman); }
ValidationSignals& validation_signals() { return *Assert(m_node.validation_signals); }
NodeContext& m_node;
};
} // namespace
} // namespace node
namespace interfaces {
std::unique_ptr<Node> MakeNode(node::NodeContext& context) { return std::make_unique<node::NodeImpl>(context); }
std::unique_ptr<Chain> MakeChain(node::NodeContext& context) { return std::make_unique<node::ChainImpl>(context); }
} // namespace interfaces
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