diff --git a/src/qt/rpcconsole.cpp b/src/qt/rpcconsole.cpp index 7b73867fa..c9d8f5ae0 100644 --- a/src/qt/rpcconsole.cpp +++ b/src/qt/rpcconsole.cpp @@ -1,1486 +1,1488 @@ // Copyright (c) 2011-2019 The Bitcoin Core developers // Distributed under the MIT software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. #if defined(HAVE_CONFIG_H) #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef ENABLE_WALLET +#include +#include #include - -#include #endif #include #include #include #include #include #include #include #include +#include #include #include #include const int CONSOLE_HISTORY = 50; const int INITIAL_TRAFFIC_GRAPH_MINS = 30; const QSize FONT_RANGE(4, 40); const char fontSizeSettingsKey[] = "consoleFontSize"; const struct { const char *url; const char *source; } ICON_MAPPING[] = {{"cmd-request", ":/icons/tx_input"}, {"cmd-reply", ":/icons/tx_output"}, {"cmd-error", ":/icons/tx_output"}, {"misc", ":/icons/tx_inout"}, {nullptr, nullptr}}; namespace { // don't add private key handling cmd's to the history const QStringList historyFilter = QStringList() << "importprivkey" << "importmulti" << "sethdseed" << "signmessagewithprivkey" << "signrawtransactionwithkey" << "walletpassphrase" << "walletpassphrasechange" << "encryptwallet"; } // namespace /* Object for executing console RPC commands in a separate thread. */ class RPCExecutor : public QObject { Q_OBJECT public: explicit RPCExecutor(interfaces::Node &node) : m_node(node) {} public Q_SLOTS: void request(const QString &command, const WalletModel *wallet_model); Q_SIGNALS: void reply(int category, const QString &command); private: interfaces::Node &m_node; }; /** Class for handling RPC timers * (used for e.g. re-locking the wallet after a timeout) */ class QtRPCTimerBase : public QObject, public RPCTimerBase { Q_OBJECT public: QtRPCTimerBase(std::function &_func, int64_t millis) : func(_func) { timer.setSingleShot(true); connect(&timer, &QTimer::timeout, [this] { func(); }); timer.start(millis); } ~QtRPCTimerBase() {} private: QTimer timer; std::function func; }; class QtRPCTimerInterface : public RPCTimerInterface { public: ~QtRPCTimerInterface() {} const char *Name() override { return "Qt"; } RPCTimerBase *NewTimer(std::function &func, int64_t millis) override { return new QtRPCTimerBase(func, millis); } }; #include /** * Split shell command line into a list of arguments and optionally execute the * command(s). * Aims to emulate \c bash and friends. * * - Command nesting is possible with parenthesis; for example: * validateaddress(getnewaddress()) * - Arguments are delimited with whitespace or comma * - Extra whitespace at the beginning and end and between arguments will be * ignored * - Text can be "double" or 'single' quoted * - The backslash \c \ is used as escape character * - Outside quotes, any character can be escaped * - Within double quotes, only escape \c " and backslashes before a \c " or * another backslash * - Within single quotes, no escaping is possible and no special * interpretation takes place * * @param[in] node optional node to execute command on * @param[out] strResult stringified result from the executed command(chain) * @param[in] strCommand Command line to split * @param[in] fExecute set true if you want the command to be executed * @param[out] pstrFilteredOut Command line, filtered to remove any sensitive * data */ bool RPCConsole::RPCParseCommandLine(interfaces::Node *node, std::string &strResult, const std::string &strCommand, const bool fExecute, std::string *const pstrFilteredOut, const WalletModel *wallet_model) { std::vector> stack; stack.push_back(std::vector()); enum CmdParseState { STATE_EATING_SPACES, STATE_EATING_SPACES_IN_ARG, STATE_EATING_SPACES_IN_BRACKETS, STATE_ARGUMENT, STATE_SINGLEQUOTED, STATE_DOUBLEQUOTED, STATE_ESCAPE_OUTER, STATE_ESCAPE_DOUBLEQUOTED, STATE_COMMAND_EXECUTED, STATE_COMMAND_EXECUTED_INNER } state = STATE_EATING_SPACES; std::string curarg; UniValue lastResult; unsigned nDepthInsideSensitive = 0; size_t filter_begin_pos = 0, chpos; std::vector> filter_ranges; auto add_to_current_stack = [&](const std::string &strArg) { if (stack.back().empty() && (!nDepthInsideSensitive) && historyFilter.contains(QString::fromStdString(strArg), Qt::CaseInsensitive)) { nDepthInsideSensitive = 1; filter_begin_pos = chpos; } // Make sure stack is not empty before adding something if (stack.empty()) { stack.push_back(std::vector()); } stack.back().push_back(strArg); }; auto close_out_params = [&]() { if (nDepthInsideSensitive) { if (!--nDepthInsideSensitive) { assert(filter_begin_pos); filter_ranges.push_back( std::make_pair(filter_begin_pos, chpos)); filter_begin_pos = 0; } } stack.pop_back(); }; std::string strCommandTerminated = strCommand; if (strCommandTerminated.back() != '\n') { strCommandTerminated += "\n"; } for (chpos = 0; chpos < strCommandTerminated.size(); ++chpos) { char ch = strCommandTerminated[chpos]; switch (state) { case STATE_COMMAND_EXECUTED_INNER: case STATE_COMMAND_EXECUTED: { bool breakParsing = true; switch (ch) { case '[': curarg.clear(); state = STATE_COMMAND_EXECUTED_INNER; break; default: if (state == STATE_COMMAND_EXECUTED_INNER) { if (ch != ']') { // append char to the current argument (which is // also used for the query command) curarg += ch; break; } if (curarg.size() && fExecute) { // if we have a value query, query arrays with // index and objects with a string key UniValue subelement; if (lastResult.isArray()) { for (char argch : curarg) { if (!IsDigit(argch)) { throw std::runtime_error( "Invalid result query"); } } subelement = lastResult[atoi(curarg.c_str())]; } else if (lastResult.isObject()) { subelement = find_value(lastResult, curarg); } else { // no array or object: abort throw std::runtime_error( "Invalid result query"); } lastResult = subelement; } state = STATE_COMMAND_EXECUTED; break; } // don't break parsing when the char is required for the // next argument breakParsing = false; // pop the stack and return the result to the current // command arguments close_out_params(); // don't stringify the json in case of a string to avoid // doublequotes if (lastResult.isStr()) { curarg = lastResult.get_str(); } else { curarg = lastResult.write(2); } // if we have a non empty result, use it as stack // argument otherwise as general result if (curarg.size()) { if (stack.size()) { add_to_current_stack(curarg); } else { strResult = curarg; } } curarg.clear(); // assume eating space state state = STATE_EATING_SPACES; } if (breakParsing) { break; } } // FALLTHROUGH case STATE_ARGUMENT: // In or after argument case STATE_EATING_SPACES_IN_ARG: case STATE_EATING_SPACES_IN_BRACKETS: case STATE_EATING_SPACES: // Handle runs of whitespace switch (ch) { case '"': state = STATE_DOUBLEQUOTED; break; case '\'': state = STATE_SINGLEQUOTED; break; case '\\': state = STATE_ESCAPE_OUTER; break; case '(': case ')': case '\n': if (state == STATE_EATING_SPACES_IN_ARG) { throw std::runtime_error("Invalid Syntax"); } if (state == STATE_ARGUMENT) { if (ch == '(' && stack.size() && stack.back().size() > 0) { if (nDepthInsideSensitive) { ++nDepthInsideSensitive; } stack.push_back(std::vector()); } // don't allow commands after executed commands on // baselevel if (!stack.size()) { throw std::runtime_error("Invalid Syntax"); } add_to_current_stack(curarg); curarg.clear(); state = STATE_EATING_SPACES_IN_BRACKETS; } if ((ch == ')' || ch == '\n') && stack.size() > 0) { if (fExecute) { // Convert argument list to JSON objects in // method-dependent way, and pass it along with // the method name to the dispatcher. UniValue params = RPCConvertValues( stack.back()[0], std::vector( stack.back().begin() + 1, stack.back().end())); std::string method = stack.back()[0]; std::string uri; #ifdef ENABLE_WALLET if (wallet_model) { QByteArray encodedName = QUrl::toPercentEncoding( wallet_model->getWalletName()); uri = "/wallet/" + std::string(encodedName.constData(), encodedName.length()); } #endif GlobalConfig config; assert(node); lastResult = node->executeRpc(config, method, params, uri); } state = STATE_COMMAND_EXECUTED; curarg.clear(); } break; case ' ': case ',': case '\t': if (state == STATE_EATING_SPACES_IN_ARG && curarg.empty() && ch == ',') { throw std::runtime_error("Invalid Syntax"); } else if (state == STATE_ARGUMENT) { // Space ends argument add_to_current_stack(curarg); curarg.clear(); } if ((state == STATE_EATING_SPACES_IN_BRACKETS || state == STATE_ARGUMENT) && ch == ',') { state = STATE_EATING_SPACES_IN_ARG; break; } state = STATE_EATING_SPACES; break; default: curarg += ch; state = STATE_ARGUMENT; } break; case STATE_SINGLEQUOTED: // Single-quoted string switch (ch) { case '\'': state = STATE_ARGUMENT; break; default: curarg += ch; } break; case STATE_DOUBLEQUOTED: // Double-quoted string switch (ch) { case '"': state = STATE_ARGUMENT; break; case '\\': state = STATE_ESCAPE_DOUBLEQUOTED; break; default: curarg += ch; } break; case STATE_ESCAPE_OUTER: // '\' outside quotes curarg += ch; state = STATE_ARGUMENT; break; case STATE_ESCAPE_DOUBLEQUOTED: // '\' in double-quoted text if (ch != '"' && ch != '\\') { // keep '\' for everything but the quote and '\' itself curarg += '\\'; } curarg += ch; state = STATE_DOUBLEQUOTED; break; } } if (pstrFilteredOut) { if (STATE_COMMAND_EXECUTED == state) { assert(!stack.empty()); close_out_params(); } *pstrFilteredOut = strCommand; for (auto i = filter_ranges.rbegin(); i != filter_ranges.rend(); ++i) { pstrFilteredOut->replace(i->first, i->second - i->first, "(…)"); } } // final state switch (state) { case STATE_COMMAND_EXECUTED: if (lastResult.isStr()) { strResult = lastResult.get_str(); } else { strResult = lastResult.write(2); } // FALLTHROUGH case STATE_ARGUMENT: case STATE_EATING_SPACES: return true; default: // ERROR to end in one of the other states return false; } } void RPCExecutor::request(const QString &command, const WalletModel *wallet_model) { try { std::string result; std::string executableCommand = command.toStdString() + "\n"; // Catch the console-only-help command before RPC call is executed and // reply with help text as-if a RPC reply. if (executableCommand == "help-console\n") { Q_EMIT reply( RPCConsole::CMD_REPLY, QString(("\n" "This console accepts RPC commands using the standard " "syntax.\n" " example: getblockhash 0\n\n" "This console can also accept RPC commands using " "parenthesized syntax.\n" " example: getblockhash(0)\n\n" "Commands may be nested when specified with the " "parenthesized syntax.\n" " example: getblock(getblockhash(0) 1)\n\n" "A space or a comma can be used to delimit arguments " "for either syntax.\n" " example: getblockhash 0\n" " getblockhash,0\n\n" "Named results can be queried with a non-quoted key " "string in brackets.\n" " example: getblock(getblockhash(0) true)[tx]\n\n" "Results without keys can be queried using an integer " "in brackets.\n" " example: " "getblock(getblockhash(0),true)[tx][0]\n\n"))); return; } if (!RPCConsole::RPCExecuteCommandLine( m_node, result, executableCommand, nullptr, wallet_model)) { Q_EMIT reply(RPCConsole::CMD_ERROR, QString("Parse error: unbalanced ' or \"")); return; } Q_EMIT reply(RPCConsole::CMD_REPLY, QString::fromStdString(result)); } catch (UniValue &objError) { // Nice formatting for standard-format error try { int code = find_value(objError, "code").get_int(); std::string message = find_value(objError, "message").get_str(); Q_EMIT reply(RPCConsole::CMD_ERROR, QString::fromStdString(message) + " (code " + QString::number(code) + ")"); } catch (const std::runtime_error &) { // raised when converting to invalid type, i.e. missing code or // message. Show raw JSON object. Q_EMIT reply(RPCConsole::CMD_ERROR, QString::fromStdString(objError.write())); } } catch (const std::exception &e) { Q_EMIT reply(RPCConsole::CMD_ERROR, QString("Error: ") + QString::fromStdString(e.what())); } } RPCConsole::RPCConsole(interfaces::Node &node, const PlatformStyle *_platformStyle, QWidget *parent) : QWidget(parent), m_node(node), ui(new Ui::RPCConsole), platformStyle(_platformStyle) { ui->setupUi(this); QSettings settings; if (!restoreGeometry( settings.value("RPCConsoleWindowGeometry").toByteArray())) { // Restore failed (perhaps missing setting), center the window move(QGuiApplication::primaryScreen()->availableGeometry().center() - frameGeometry().center()); } QChar nonbreaking_hyphen(8209); ui->dataDir->setToolTip( ui->dataDir->toolTip().arg(QString(nonbreaking_hyphen) + "datadir")); ui->blocksDir->setToolTip(ui->blocksDir->toolTip().arg( QString(nonbreaking_hyphen) + "blocksdir")); ui->openDebugLogfileButton->setToolTip( ui->openDebugLogfileButton->toolTip().arg(PACKAGE_NAME)); if (platformStyle->getImagesOnButtons()) { ui->openDebugLogfileButton->setIcon( platformStyle->SingleColorIcon(":/icons/export")); } ui->clearButton->setIcon(platformStyle->SingleColorIcon(":/icons/remove")); ui->fontBiggerButton->setIcon( platformStyle->SingleColorIcon(":/icons/fontbigger")); ui->fontSmallerButton->setIcon( platformStyle->SingleColorIcon(":/icons/fontsmaller")); // Install event filter for up and down arrow ui->lineEdit->installEventFilter(this); ui->lineEdit->setMaxLength(16 * 1024 * 1024); ui->messagesWidget->installEventFilter(this); connect(ui->clearButton, &QPushButton::clicked, this, &RPCConsole::clear); connect(ui->fontBiggerButton, &QPushButton::clicked, this, &RPCConsole::fontBigger); connect(ui->fontSmallerButton, &QPushButton::clicked, this, &RPCConsole::fontSmaller); connect(ui->btnClearTrafficGraph, &QPushButton::clicked, ui->trafficGraph, &TrafficGraphWidget::clear); // disable the wallet selector by default ui->WalletSelector->setVisible(false); ui->WalletSelectorLabel->setVisible(false); // set library version labels #ifdef ENABLE_WALLET - ui->berkeleyDBVersion->setText(DbEnv::version(nullptr, nullptr, nullptr)); + ui->berkeleyDBVersion->setText( + QString::fromStdString(BerkeleyDatabaseVersion())); #else ui->label_berkeleyDBVersion->hide(); ui->berkeleyDBVersion->hide(); #endif // Register RPC timer interface rpcTimerInterface = new QtRPCTimerInterface(); // avoid accidentally overwriting an existing, non QTThread // based timer interface m_node.rpcSetTimerInterfaceIfUnset(rpcTimerInterface); setTrafficGraphRange(INITIAL_TRAFFIC_GRAPH_MINS); ui->detailWidget->hide(); ui->peerHeading->setText(tr("Select a peer to view detailed information.")); consoleFontSize = settings.value(fontSizeSettingsKey, QFont().pointSize()).toInt(); clear(); GUIUtil::handleCloseWindowShortcut(this); } RPCConsole::~RPCConsole() { QSettings settings; settings.setValue("RPCConsoleWindowGeometry", saveGeometry()); m_node.rpcUnsetTimerInterface(rpcTimerInterface); delete rpcTimerInterface; delete ui; } bool RPCConsole::eventFilter(QObject *obj, QEvent *event) { // Special key handling if (event->type() == QEvent::KeyPress) { QKeyEvent *keyevt = static_cast(event); int key = keyevt->key(); Qt::KeyboardModifiers mod = keyevt->modifiers(); switch (key) { case Qt::Key_Up: if (obj == ui->lineEdit) { browseHistory(-1); return true; } break; case Qt::Key_Down: if (obj == ui->lineEdit) { browseHistory(1); return true; } break; case Qt::Key_PageUp: /* pass paging keys to messages widget */ case Qt::Key_PageDown: if (obj == ui->lineEdit) { QApplication::postEvent(ui->messagesWidget, new QKeyEvent(*keyevt)); return true; } break; case Qt::Key_Return: case Qt::Key_Enter: // forward these events to lineEdit if (obj == autoCompleter->popup()) { QApplication::postEvent(ui->lineEdit, new QKeyEvent(*keyevt)); return true; } break; default: // Typing in messages widget brings focus to line edit, and // redirects key there. Exclude most combinations and keys that // emit no text, except paste shortcuts. if (obj == ui->messagesWidget && ((!mod && !keyevt->text().isEmpty() && key != Qt::Key_Tab) || ((mod & Qt::ControlModifier) && key == Qt::Key_V) || ((mod & Qt::ShiftModifier) && key == Qt::Key_Insert))) { ui->lineEdit->setFocus(); QApplication::postEvent(ui->lineEdit, new QKeyEvent(*keyevt)); return true; } } } return QWidget::eventFilter(obj, event); } void RPCConsole::setClientModel(ClientModel *model, int bestblock_height, int64_t bestblock_date, double verification_progress) { clientModel = model; bool wallet_enabled{false}; #ifdef ENABLE_WALLET wallet_enabled = WalletModel::isWalletEnabled(); #endif // ENABLE_WALLET if (model && !wallet_enabled) { // Show warning, for example if this is a prerelease version connect(model, &ClientModel::alertsChanged, this, &RPCConsole::updateAlerts); updateAlerts(model->getStatusBarWarnings()); } ui->trafficGraph->setClientModel(model); if (model && clientModel->getPeerTableModel() && clientModel->getBanTableModel()) { // Keep up to date with client setNumConnections(model->getNumConnections()); connect(model, &ClientModel::numConnectionsChanged, this, &RPCConsole::setNumConnections); setNumBlocks(bestblock_height, QDateTime::fromTime_t(bestblock_date), verification_progress, false); connect(model, &ClientModel::numBlocksChanged, this, &RPCConsole::setNumBlocks); updateNetworkState(); connect(model, &ClientModel::networkActiveChanged, this, &RPCConsole::setNetworkActive); interfaces::Node &node = clientModel->node(); updateTrafficStats(node.getTotalBytesRecv(), node.getTotalBytesSent()); connect(model, &ClientModel::bytesChanged, this, &RPCConsole::updateTrafficStats); connect(model, &ClientModel::mempoolSizeChanged, this, &RPCConsole::setMempoolSize); // set up peer table ui->peerWidget->setModel(model->getPeerTableModel()); ui->peerWidget->verticalHeader()->hide(); ui->peerWidget->setEditTriggers(QAbstractItemView::NoEditTriggers); ui->peerWidget->setSelectionBehavior(QAbstractItemView::SelectRows); ui->peerWidget->setSelectionMode(QAbstractItemView::ExtendedSelection); ui->peerWidget->setContextMenuPolicy(Qt::CustomContextMenu); ui->peerWidget->setColumnWidth(PeerTableModel::Address, ADDRESS_COLUMN_WIDTH); ui->peerWidget->setColumnWidth(PeerTableModel::Subversion, SUBVERSION_COLUMN_WIDTH); ui->peerWidget->setColumnWidth(PeerTableModel::Ping, PING_COLUMN_WIDTH); ui->peerWidget->horizontalHeader()->setStretchLastSection(true); // create peer table context menu actions QAction *disconnectAction = new QAction(tr("&Disconnect"), this); QAction *banAction1h = new QAction(tr("Ban for") + " " + tr("1 &hour"), this); QAction *banAction24h = new QAction(tr("Ban for") + " " + tr("1 &day"), this); QAction *banAction7d = new QAction(tr("Ban for") + " " + tr("1 &week"), this); QAction *banAction365d = new QAction(tr("Ban for") + " " + tr("1 &year"), this); // create peer table context menu peersTableContextMenu = new QMenu(this); peersTableContextMenu->addAction(disconnectAction); peersTableContextMenu->addAction(banAction1h); peersTableContextMenu->addAction(banAction24h); peersTableContextMenu->addAction(banAction7d); peersTableContextMenu->addAction(banAction365d); connect(banAction1h, &QAction::triggered, [this] { banSelectedNode(60 * 60); }); connect(banAction24h, &QAction::triggered, [this] { banSelectedNode(60 * 60 * 24); }); connect(banAction7d, &QAction::triggered, [this] { banSelectedNode(60 * 60 * 24 * 7); }); connect(banAction365d, &QAction::triggered, [this] { banSelectedNode(60 * 60 * 24 * 365); }); // peer table context menu signals connect(ui->peerWidget, &QTableView::customContextMenuRequested, this, &RPCConsole::showPeersTableContextMenu); connect(disconnectAction, &QAction::triggered, this, &RPCConsole::disconnectSelectedNode); // peer table signal handling - update peer details when selecting new // node connect(ui->peerWidget->selectionModel(), &QItemSelectionModel::selectionChanged, this, &RPCConsole::peerSelected); // peer table signal handling - update peer details when new nodes are // added to the model connect(model->getPeerTableModel(), &PeerTableModel::layoutChanged, this, &RPCConsole::peerLayoutChanged); // peer table signal handling - cache selected node ids connect(model->getPeerTableModel(), &PeerTableModel::layoutAboutToBeChanged, this, &RPCConsole::peerLayoutAboutToChange); // set up ban table ui->banlistWidget->setModel(model->getBanTableModel()); ui->banlistWidget->verticalHeader()->hide(); ui->banlistWidget->setEditTriggers(QAbstractItemView::NoEditTriggers); ui->banlistWidget->setSelectionBehavior(QAbstractItemView::SelectRows); ui->banlistWidget->setSelectionMode(QAbstractItemView::SingleSelection); ui->banlistWidget->setContextMenuPolicy(Qt::CustomContextMenu); ui->banlistWidget->setColumnWidth(BanTableModel::Address, BANSUBNET_COLUMN_WIDTH); ui->banlistWidget->setColumnWidth(BanTableModel::Bantime, BANTIME_COLUMN_WIDTH); ui->banlistWidget->horizontalHeader()->setStretchLastSection(true); // create ban table context menu action QAction *unbanAction = new QAction(tr("&Unban"), this); // create ban table context menu banTableContextMenu = new QMenu(this); banTableContextMenu->addAction(unbanAction); // ban table context menu signals connect(ui->banlistWidget, &QTableView::customContextMenuRequested, this, &RPCConsole::showBanTableContextMenu); connect(unbanAction, &QAction::triggered, this, &RPCConsole::unbanSelectedNode); // ban table signal handling - clear peer details when clicking a peer // in the ban table connect(ui->banlistWidget, &QTableView::clicked, this, &RPCConsole::clearSelectedNode); // ban table signal handling - ensure ban table is shown or hidden (if // empty) connect(model->getBanTableModel(), &BanTableModel::layoutChanged, this, &RPCConsole::showOrHideBanTableIfRequired); showOrHideBanTableIfRequired(); // Provide initial values ui->clientVersion->setText(model->formatFullVersion()); ui->clientUserAgent->setText(model->formatSubVersion()); ui->dataDir->setText(model->dataDir()); ui->blocksDir->setText(model->blocksDir()); ui->startupTime->setText(model->formatClientStartupTime()); ui->networkName->setText( QString::fromStdString(Params().NetworkIDString())); // Setup autocomplete and attach it QStringList wordList; std::vector commandList = m_node.listRpcCommands(); for (size_t i = 0; i < commandList.size(); ++i) { wordList << commandList[i].c_str(); wordList << ("help " + commandList[i]).c_str(); } wordList << "help-console"; wordList.sort(); autoCompleter = new QCompleter(wordList, this); autoCompleter->setModelSorting(QCompleter::CaseSensitivelySortedModel); // ui->lineEdit is initially disabled because running commands is only // possible from now on. ui->lineEdit->setEnabled(true); ui->lineEdit->setCompleter(autoCompleter); autoCompleter->popup()->installEventFilter(this); // Start thread to execute RPC commands. startExecutor(); } if (!model) { // Client model is being set to 0, this means shutdown() is about to be // called. thread.quit(); thread.wait(); } } #ifdef ENABLE_WALLET void RPCConsole::addWallet(WalletModel *const walletModel) { // use name for text and wallet model for internal data object (to allow to // move to a wallet id later) ui->WalletSelector->addItem(walletModel->getDisplayName(), QVariant::fromValue(walletModel)); if (ui->WalletSelector->count() == 2 && !isVisible()) { // First wallet added, set to default so long as the window isn't // presently visible (and potentially in use) ui->WalletSelector->setCurrentIndex(1); } if (ui->WalletSelector->count() > 2) { ui->WalletSelector->setVisible(true); ui->WalletSelectorLabel->setVisible(true); } } void RPCConsole::removeWallet(WalletModel *const walletModel) { ui->WalletSelector->removeItem( ui->WalletSelector->findData(QVariant::fromValue(walletModel))); if (ui->WalletSelector->count() == 2) { ui->WalletSelector->setVisible(false); ui->WalletSelectorLabel->setVisible(false); } } #endif static QString categoryClass(int category) { switch (category) { case RPCConsole::CMD_REQUEST: return "cmd-request"; break; case RPCConsole::CMD_REPLY: return "cmd-reply"; break; case RPCConsole::CMD_ERROR: return "cmd-error"; break; default: return "misc"; } } void RPCConsole::fontBigger() { setFontSize(consoleFontSize + 1); } void RPCConsole::fontSmaller() { setFontSize(consoleFontSize - 1); } void RPCConsole::setFontSize(int newSize) { QSettings settings; // don't allow an insane font size if (newSize < FONT_RANGE.width() || newSize > FONT_RANGE.height()) { return; } // temp. store the console content QString str = ui->messagesWidget->toHtml(); // replace font tags size in current content str.replace(QString("font-size:%1pt").arg(consoleFontSize), QString("font-size:%1pt").arg(newSize)); // store the new font size consoleFontSize = newSize; settings.setValue(fontSizeSettingsKey, consoleFontSize); // clear console (reset icon sizes, default stylesheet) and re-add the // content float oldPosFactor = 1.0 / ui->messagesWidget->verticalScrollBar()->maximum() * ui->messagesWidget->verticalScrollBar()->value(); clear(false); ui->messagesWidget->setHtml(str); ui->messagesWidget->verticalScrollBar()->setValue( oldPosFactor * ui->messagesWidget->verticalScrollBar()->maximum()); } void RPCConsole::clear(bool clearHistory) { ui->messagesWidget->clear(); if (clearHistory) { history.clear(); historyPtr = 0; } ui->lineEdit->clear(); ui->lineEdit->setFocus(); // Add smoothly scaled icon images. // (when using width/height on an img, Qt uses nearest instead of linear // interpolation) for (int i = 0; ICON_MAPPING[i].url; ++i) { ui->messagesWidget->document()->addResource( QTextDocument::ImageResource, QUrl(ICON_MAPPING[i].url), platformStyle->SingleColorImage(ICON_MAPPING[i].source) .scaled(QSize(consoleFontSize * 2, consoleFontSize * 2), Qt::IgnoreAspectRatio, Qt::SmoothTransformation)); } // Set default style sheet QFontInfo fixedFontInfo(GUIUtil::fixedPitchFont()); ui->messagesWidget->document()->setDefaultStyleSheet( QString("table { }" "td.time { color: #808080; font-size: %2; padding-top: 3px; } " "td.message { font-family: %1; font-size: %2; " "white-space:pre-wrap; } " "td.cmd-request { color: #006060; } " "td.cmd-error { color: red; } " ".secwarning { color: red; }" "b { color: #006060; } ") .arg(fixedFontInfo.family(), QString("%1pt").arg(consoleFontSize))); #ifdef Q_OS_MAC QString clsKey = "(⌘)-L"; #else QString clsKey = "Ctrl-L"; #endif message(CMD_REPLY, (tr("Welcome to the %1 RPC console.").arg(PACKAGE_NAME) + "
" + tr("Use up and down arrows to navigate history, and " "%1 to clear screen.") .arg("" + clsKey + "") + "
" + tr("Type %1 for an overview of available commands.") .arg("help") + "
" + tr("For more information on using this console type %1.") .arg("help-console") + "

" + tr("WARNING: Scammers have been active, telling users to type " "commands here, stealing their wallet contents. Do not use " "this console without fully understanding the ramifications " "of a command.") + ""), true); } void RPCConsole::keyPressEvent(QKeyEvent *event) { if (windowType() != Qt::Widget && event->key() == Qt::Key_Escape) { close(); } } void RPCConsole::message(int category, const QString &message, bool html) { QTime time = QTime::currentTime(); QString timeString = time.toString(); QString out; out += ""; out += ""; out += "
" + timeString + ""; if (html) { out += message; } else { out += GUIUtil::HtmlEscape(message, false); } out += "
"; ui->messagesWidget->append(out); } void RPCConsole::updateNetworkState() { QString connections = QString::number(clientModel->getNumConnections()) + " ("; connections += tr("In:") + " " + QString::number(clientModel->getNumConnections( ClientModel::CONNECTIONS_IN)) + " / "; connections += tr("Out:") + " " + QString::number(clientModel->getNumConnections( ClientModel::CONNECTIONS_OUT)) + ")"; if (!clientModel->node().getNetworkActive()) { connections += " (" + tr("Network activity disabled") + ")"; } ui->numberOfConnections->setText(connections); } void RPCConsole::setNumConnections(int count) { if (!clientModel) { return; } updateNetworkState(); } void RPCConsole::setNetworkActive(bool networkActive) { updateNetworkState(); } void RPCConsole::setNumBlocks(int count, const QDateTime &blockDate, double nVerificationProgress, bool headers) { if (!headers) { ui->numberOfBlocks->setText(QString::number(count)); ui->lastBlockTime->setText(blockDate.toString()); } } void RPCConsole::setMempoolSize(long numberOfTxs, size_t dynUsage) { ui->mempoolNumberTxs->setText(QString::number(numberOfTxs)); if (dynUsage < 1000000) { ui->mempoolSize->setText(QString::number(dynUsage / 1000.0, 'f', 2) + " KB"); } else { ui->mempoolSize->setText(QString::number(dynUsage / 1000000.0, 'f', 2) + " MB"); } } void RPCConsole::on_lineEdit_returnPressed() { QString cmd = ui->lineEdit->text(); if (!cmd.isEmpty()) { std::string strFilteredCmd; try { std::string dummy; if (!RPCParseCommandLine(nullptr, dummy, cmd.toStdString(), false, &strFilteredCmd)) { // Failed to parse command, so we cannot even filter it for the // history throw std::runtime_error("Invalid command line"); } } catch (const std::exception &e) { QMessageBox::critical(this, "Error", QString("Error: ") + QString::fromStdString(e.what())); return; } ui->lineEdit->clear(); cmdBeforeBrowsing = QString(); #ifdef ENABLE_WALLET WalletModel *wallet_model = ui->WalletSelector->currentData().value(); if (m_last_wallet_model != wallet_model) { if (wallet_model) { message(CMD_REQUEST, tr("Executing command using \"%1\" wallet") .arg(wallet_model->getWalletName())); } else { message(CMD_REQUEST, tr("Executing command without any wallet")); } m_last_wallet_model = wallet_model; } #endif message(CMD_REQUEST, QString::fromStdString(strFilteredCmd)); Q_EMIT cmdRequest(cmd, m_last_wallet_model); cmd = QString::fromStdString(strFilteredCmd); // Remove command, if already in history history.removeOne(cmd); // Append command to history history.append(cmd); // Enforce maximum history size while (history.size() > CONSOLE_HISTORY) { history.removeFirst(); } // Set pointer to end of history historyPtr = history.size(); // Scroll console view to end scrollToEnd(); } } void RPCConsole::browseHistory(int offset) { // store current text when start browsing through the history if (historyPtr == history.size()) { cmdBeforeBrowsing = ui->lineEdit->text(); } historyPtr += offset; if (historyPtr < 0) { historyPtr = 0; } if (historyPtr > history.size()) { historyPtr = history.size(); } QString cmd; if (historyPtr < history.size()) { cmd = history.at(historyPtr); } else if (!cmdBeforeBrowsing.isNull()) { cmd = cmdBeforeBrowsing; } ui->lineEdit->setText(cmd); } void RPCConsole::startExecutor() { RPCExecutor *executor = new RPCExecutor(m_node); executor->moveToThread(&thread); // Replies from executor object must go to this object connect(executor, &RPCExecutor::reply, this, static_cast( &RPCConsole::message)); // Requests from this object must go to executor connect(this, &RPCConsole::cmdRequest, executor, &RPCExecutor::request); // Make sure executor object is deleted in its own thread connect(&thread, &QThread::finished, executor, &RPCExecutor::deleteLater); // Default implementation of QThread::run() simply spins up an event loop in // the thread, which is what we want. thread.start(); } void RPCConsole::on_tabWidget_currentChanged(int index) { if (ui->tabWidget->widget(index) == ui->tab_console) { ui->lineEdit->setFocus(); } } void RPCConsole::on_openDebugLogfileButton_clicked() { GUIUtil::openDebugLogfile(); } void RPCConsole::scrollToEnd() { QScrollBar *scrollbar = ui->messagesWidget->verticalScrollBar(); scrollbar->setValue(scrollbar->maximum()); } void RPCConsole::on_sldGraphRange_valueChanged(int value) { const int multiplier = 5; // each position on the slider represents 5 min int mins = value * multiplier; setTrafficGraphRange(mins); } void RPCConsole::setTrafficGraphRange(int mins) { ui->trafficGraph->setGraphRangeMins(mins); ui->lblGraphRange->setText(GUIUtil::formatDurationStr(mins * 60)); } void RPCConsole::updateTrafficStats(quint64 totalBytesIn, quint64 totalBytesOut) { ui->lblBytesIn->setText(GUIUtil::formatBytes(totalBytesIn)); ui->lblBytesOut->setText(GUIUtil::formatBytes(totalBytesOut)); } void RPCConsole::peerSelected(const QItemSelection &selected, const QItemSelection &deselected) { Q_UNUSED(deselected); if (!clientModel || !clientModel->getPeerTableModel() || selected.indexes().isEmpty()) { return; } const CNodeCombinedStats *stats = clientModel->getPeerTableModel()->getNodeStats( selected.indexes().first().row()); if (stats) { updateNodeDetail(stats); } } void RPCConsole::peerLayoutAboutToChange() { QModelIndexList selected = ui->peerWidget->selectionModel()->selectedIndexes(); cachedNodeids.clear(); for (int i = 0; i < selected.size(); i++) { const CNodeCombinedStats *stats = clientModel->getPeerTableModel()->getNodeStats( selected.at(i).row()); cachedNodeids.append(stats->nodeStats.nodeid); } } void RPCConsole::peerLayoutChanged() { if (!clientModel || !clientModel->getPeerTableModel()) { return; } const CNodeCombinedStats *stats = nullptr; bool fUnselect = false; bool fReselect = false; // no node selected yet if (cachedNodeids.empty()) { return; } // find the currently selected row int selectedRow = -1; QModelIndexList selectedModelIndex = ui->peerWidget->selectionModel()->selectedIndexes(); if (!selectedModelIndex.isEmpty()) { selectedRow = selectedModelIndex.first().row(); } // check if our detail node has a row in the table (it may not necessarily // be at selectedRow since its position can change after a layout change) int detailNodeRow = clientModel->getPeerTableModel()->getRowByNodeId(cachedNodeids.first()); if (detailNodeRow < 0) { // detail node disappeared from table (node disconnected) fUnselect = true; } else { if (detailNodeRow != selectedRow) { // detail node moved position fUnselect = true; fReselect = true; } // get fresh stats on the detail node. stats = clientModel->getPeerTableModel()->getNodeStats(detailNodeRow); } if (fUnselect && selectedRow >= 0) { clearSelectedNode(); } if (fReselect) { for (int i = 0; i < cachedNodeids.size(); i++) { ui->peerWidget->selectRow( clientModel->getPeerTableModel()->getRowByNodeId( cachedNodeids.at(i))); } } if (stats) { updateNodeDetail(stats); } } void RPCConsole::updateNodeDetail(const CNodeCombinedStats *stats) { // update the detail ui with latest node information QString peerAddrDetails(QString::fromStdString(stats->nodeStats.addrName) + " "); peerAddrDetails += tr("(node id: %1)").arg(QString::number(stats->nodeStats.nodeid)); if (!stats->nodeStats.addrLocal.empty()) { peerAddrDetails += "
" + tr("via %1").arg(QString::fromStdString( stats->nodeStats.addrLocal)); } ui->peerHeading->setText(peerAddrDetails); ui->peerServices->setText( GUIUtil::formatServicesStr(stats->nodeStats.nServices)); ui->peerLastSend->setText( stats->nodeStats.nLastSend ? GUIUtil::formatDurationStr(GetSystemTimeInSeconds() - stats->nodeStats.nLastSend) : tr("never")); ui->peerLastRecv->setText( stats->nodeStats.nLastRecv ? GUIUtil::formatDurationStr(GetSystemTimeInSeconds() - stats->nodeStats.nLastRecv) : tr("never")); ui->peerBytesSent->setText( GUIUtil::formatBytes(stats->nodeStats.nSendBytes)); ui->peerBytesRecv->setText( GUIUtil::formatBytes(stats->nodeStats.nRecvBytes)); ui->peerConnTime->setText(GUIUtil::formatDurationStr( GetSystemTimeInSeconds() - stats->nodeStats.nTimeConnected)); ui->peerPingTime->setText( GUIUtil::formatPingTime(stats->nodeStats.m_ping_usec)); ui->peerPingWait->setText( GUIUtil::formatPingTime(stats->nodeStats.m_ping_wait_usec)); ui->peerMinPing->setText( GUIUtil::formatPingTime(stats->nodeStats.m_min_ping_usec)); ui->timeoffset->setText( GUIUtil::formatTimeOffset(stats->nodeStats.nTimeOffset)); ui->peerVersion->setText(QString::number(stats->nodeStats.nVersion)); ui->peerSubversion->setText( QString::fromStdString(stats->nodeStats.cleanSubVer)); ui->peerDirection->setText(stats->nodeStats.fInbound ? tr("Inbound") : tr("Outbound")); ui->peerHeight->setText(QString::number(stats->nodeStats.nStartingHeight)); if (stats->nodeStats.m_permissionFlags == PF_NONE) { ui->peerPermissions->setText(tr("N/A")); } else { QStringList permissions; for (const auto &permission : NetPermissions::ToStrings(stats->nodeStats.m_permissionFlags)) { permissions.append(QString::fromStdString(permission)); } ui->peerPermissions->setText(permissions.join(" & ")); } ui->peerMappedAS->setText( stats->nodeStats.m_mapped_as != 0 ? QString::number(stats->nodeStats.m_mapped_as) : tr("N/A")); // This check fails for example if the lock was busy and // nodeStateStats couldn't be fetched. if (stats->fNodeStateStatsAvailable) { // Sync height is init to -1 if (stats->nodeStateStats.nSyncHeight > -1) { ui->peerSyncHeight->setText( QString("%1").arg(stats->nodeStateStats.nSyncHeight)); } else { ui->peerSyncHeight->setText(tr("Unknown")); } // Common height is init to -1 if (stats->nodeStateStats.nCommonHeight > -1) { ui->peerCommonHeight->setText( QString("%1").arg(stats->nodeStateStats.nCommonHeight)); } else { ui->peerCommonHeight->setText(tr("Unknown")); } } ui->detailWidget->show(); } void RPCConsole::resizeEvent(QResizeEvent *event) { QWidget::resizeEvent(event); } void RPCConsole::showEvent(QShowEvent *event) { QWidget::showEvent(event); if (!clientModel || !clientModel->getPeerTableModel()) { return; } // start PeerTableModel auto refresh clientModel->getPeerTableModel()->startAutoRefresh(); } void RPCConsole::hideEvent(QHideEvent *event) { QWidget::hideEvent(event); if (!clientModel || !clientModel->getPeerTableModel()) { return; } // stop PeerTableModel auto refresh clientModel->getPeerTableModel()->stopAutoRefresh(); } void RPCConsole::showPeersTableContextMenu(const QPoint &point) { QModelIndex index = ui->peerWidget->indexAt(point); if (index.isValid()) { peersTableContextMenu->exec(QCursor::pos()); } } void RPCConsole::showBanTableContextMenu(const QPoint &point) { QModelIndex index = ui->banlistWidget->indexAt(point); if (index.isValid()) { banTableContextMenu->exec(QCursor::pos()); } } void RPCConsole::disconnectSelectedNode() { // Get selected peer addresses QList nodes = GUIUtil::getEntryData(ui->peerWidget, PeerTableModel::NetNodeId); for (int i = 0; i < nodes.count(); i++) { // Get currently selected peer address NodeId id = nodes.at(i).data().toLongLong(); // Find the node, disconnect it and clear the selected node if (m_node.disconnectById(id)) { clearSelectedNode(); } } } void RPCConsole::banSelectedNode(int bantime) { if (!clientModel) { return; } // Get selected peer addresses QList nodes = GUIUtil::getEntryData(ui->peerWidget, PeerTableModel::NetNodeId); for (int i = 0; i < nodes.count(); i++) { // Get currently selected peer address NodeId id = nodes.at(i).data().toLongLong(); // Get currently selected peer address int detailNodeRow = clientModel->getPeerTableModel()->getRowByNodeId(id); if (detailNodeRow < 0) { return; } // Find possible nodes, ban it and clear the selected node const CNodeCombinedStats *stats = clientModel->getPeerTableModel()->getNodeStats(detailNodeRow); if (stats) { m_node.ban(stats->nodeStats.addr, bantime); m_node.disconnectByAddress(stats->nodeStats.addr); } } clearSelectedNode(); clientModel->getBanTableModel()->refresh(); } void RPCConsole::unbanSelectedNode() { if (!clientModel) { return; } // Get selected ban addresses QList nodes = GUIUtil::getEntryData(ui->banlistWidget, BanTableModel::Address); for (int i = 0; i < nodes.count(); i++) { // Get currently selected ban address QString strNode = nodes.at(i).data().toString(); CSubNet possibleSubnet; LookupSubNet(strNode.toStdString(), possibleSubnet); if (possibleSubnet.IsValid() && m_node.unban(possibleSubnet)) { clientModel->getBanTableModel()->refresh(); } } } void RPCConsole::clearSelectedNode() { ui->peerWidget->selectionModel()->clearSelection(); cachedNodeids.clear(); ui->detailWidget->hide(); ui->peerHeading->setText(tr("Select a peer to view detailed information.")); } void RPCConsole::showOrHideBanTableIfRequired() { if (!clientModel) { return; } bool visible = clientModel->getBanTableModel()->shouldShow(); ui->banlistWidget->setVisible(visible); ui->banHeading->setVisible(visible); } void RPCConsole::setTabFocus(enum TabTypes tabType) { ui->tabWidget->setCurrentIndex(int(tabType)); } QString RPCConsole::tabTitle(TabTypes tab_type) const { return ui->tabWidget->tabText(int(tab_type)); } QKeySequence RPCConsole::tabShortcut(TabTypes tab_type) const { switch (tab_type) { case TabTypes::INFO: return QKeySequence(Qt::CTRL + Qt::Key_I); case TabTypes::CONSOLE: return QKeySequence(Qt::CTRL + Qt::Key_T); case TabTypes::GRAPH: return QKeySequence(Qt::CTRL + Qt::Key_N); case TabTypes::PEERS: return QKeySequence(Qt::CTRL + Qt::Key_P); } // no default case, so the compiler can warn about missing cases assert(false); } void RPCConsole::updateAlerts(const QString &warnings) { this->ui->label_alerts->setVisible(!warnings.isEmpty()); this->ui->label_alerts->setText(warnings); } diff --git a/src/wallet/bdb.cpp b/src/wallet/bdb.cpp index da5428b17..d9e216e3b 100644 --- a/src/wallet/bdb.cpp +++ b/src/wallet/bdb.cpp @@ -1,908 +1,911 @@ // Copyright (c) 2009-2010 Satoshi Nakamoto // Copyright (c) 2009-2020 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 #include #include #include #include #ifndef WIN32 #include #endif namespace { //! Make sure database has a unique fileid within the environment. If it //! doesn't, throw an error. BDB caches do not work properly when more than one //! open database has the same fileid (values written to one database may show //! up in reads to other databases). //! //! BerkeleyDB generates unique fileids by default //! (https://docs.oracle.com/cd/E17275_01/html/programmer_reference/program_copy.html), //! so bitcoin should never create different databases with the same fileid, but //! this error can be triggered if users manually copy database files. void CheckUniqueFileid(const BerkeleyEnvironment &env, const std::string &filename, Db &db, WalletDatabaseFileId &fileid) { if (env.IsMock()) { return; } int ret = db.get_mpf()->get_fileid(fileid.value); if (ret != 0) { throw std::runtime_error( strprintf("BerkeleyDatabase: Can't open database %s (get_fileid " "failed with %d)", filename, ret)); } for (const auto &item : env.m_fileids) { if (fileid == item.second && &fileid != &item.second) { throw std::runtime_error( strprintf("BerkeleyDatabase: Can't open database %s " "(duplicates fileid %s " "from %s)", filename, HexStr(item.second.value), item.first)); } } } RecursiveMutex cs_db; //! Map from directory name to db environment. std::map> g_dbenvs GUARDED_BY(cs_db); } // namespace bool WalletDatabaseFileId::operator==(const WalletDatabaseFileId &rhs) const { return memcmp(value, &rhs.value, sizeof(value)) == 0; } bool IsBDBWalletLoaded(const fs::path &wallet_path) { fs::path env_directory; std::string database_filename; SplitWalletPath(wallet_path, env_directory, database_filename); LOCK(cs_db); auto env = g_dbenvs.find(env_directory.string()); if (env == g_dbenvs.end()) { return false; } auto database = env->second.lock(); return database && database->IsDatabaseLoaded(database_filename); } /** * @param[in] wallet_path Path to wallet directory. Or (for backwards * compatibility only) a path to a berkeley btree data file inside a wallet * directory. * @param[out] database_filename Filename of berkeley btree data file inside the * wallet directory. * @return A shared pointer to the BerkeleyEnvironment object for the wallet * directory, never empty because ~BerkeleyEnvironment erases the weak pointer * from the g_dbenvs map. * @post A new BerkeleyEnvironment weak pointer is inserted into g_dbenvs if the * directory path key was not already in the map. */ std::shared_ptr GetWalletEnv(const fs::path &wallet_path, std::string &database_filename) { fs::path env_directory; SplitWalletPath(wallet_path, env_directory, database_filename); LOCK(cs_db); auto inserted = g_dbenvs.emplace(env_directory.string(), std::weak_ptr()); if (inserted.second) { auto env = std::make_shared(env_directory.string()); inserted.first->second = env; return env; } return inserted.first->second.lock(); } // // BerkeleyBatch // void BerkeleyEnvironment::Close() { if (!fDbEnvInit) { return; } fDbEnvInit = false; for (auto &db : m_databases) { BerkeleyDatabase &database = db.second.get(); assert(database.m_refcount <= 0); if (database.m_db) { database.m_db->close(0); database.m_db.reset(); } } FILE *error_file = nullptr; dbenv->get_errfile(&error_file); int ret = dbenv->close(0); if (ret != 0) { LogPrintf("BerkeleyEnvironment::Close: Error %d closing database " "environment: %s\n", ret, DbEnv::strerror(ret)); } if (!fMockDb) { DbEnv(u_int32_t(0)).remove(strPath.c_str(), 0); } if (error_file) { fclose(error_file); } UnlockDirectory(strPath, ".walletlock"); } void BerkeleyEnvironment::Reset() { dbenv.reset(new DbEnv(DB_CXX_NO_EXCEPTIONS)); fDbEnvInit = false; fMockDb = false; } BerkeleyEnvironment::BerkeleyEnvironment(const fs::path &dir_path) : strPath(dir_path.string()) { Reset(); } BerkeleyEnvironment::~BerkeleyEnvironment() { LOCK(cs_db); g_dbenvs.erase(strPath); Close(); } bool BerkeleyEnvironment::Open(bilingual_str &err) { if (fDbEnvInit) { return true; } fs::path pathIn = strPath; TryCreateDirectories(pathIn); if (!LockDirectory(pathIn, ".walletlock")) { LogPrintf("Cannot obtain a lock on wallet directory %s. Another " "instance of bitcoin may be using it.\n", strPath); err = strprintf(_("Error initializing wallet database environment %s!"), Directory()); return false; } fs::path pathLogDir = pathIn / "database"; TryCreateDirectories(pathLogDir); fs::path pathErrorFile = pathIn / "db.log"; LogPrintf("BerkeleyEnvironment::Open: LogDir=%s ErrorFile=%s\n", pathLogDir.string(), pathErrorFile.string()); unsigned int nEnvFlags = 0; if (gArgs.GetBoolArg("-privdb", DEFAULT_WALLET_PRIVDB)) { nEnvFlags |= DB_PRIVATE; } dbenv->set_lg_dir(pathLogDir.string().c_str()); // 1 MiB should be enough for just the wallet dbenv->set_cachesize(0, 0x100000, 1); dbenv->set_lg_bsize(0x10000); dbenv->set_lg_max(1048576); dbenv->set_lk_max_locks(40000); dbenv->set_lk_max_objects(40000); /// debug dbenv->set_errfile(fsbridge::fopen(pathErrorFile, "a")); dbenv->set_flags(DB_AUTO_COMMIT, 1); dbenv->set_flags(DB_TXN_WRITE_NOSYNC, 1); dbenv->log_set_config(DB_LOG_AUTO_REMOVE, 1); int ret = dbenv->open(strPath.c_str(), DB_CREATE | DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_MPOOL | DB_INIT_TXN | DB_THREAD | DB_RECOVER | nEnvFlags, S_IRUSR | S_IWUSR); if (ret != 0) { LogPrintf("BerkeleyEnvironment::Open: Error %d opening database " "environment: %s\n", ret, DbEnv::strerror(ret)); int ret2 = dbenv->close(0); if (ret2 != 0) { LogPrintf("BerkeleyEnvironment::Open: Error %d closing failed " "database environment: %s\n", ret2, DbEnv::strerror(ret2)); } Reset(); err = strprintf(_("Error initializing wallet database environment %s!"), Directory()); if (ret == DB_RUNRECOVERY) { err += Untranslated(" ") + _("This error could occur if this wallet was not shutdown " "cleanly and was last loaded using a build with a newer " "version of Berkeley DB. If so, please use the software " "that last loaded this wallet"); } return false; } fDbEnvInit = true; fMockDb = false; return true; } //! Construct an in-memory mock Berkeley environment for testing BerkeleyEnvironment::BerkeleyEnvironment() { Reset(); LogPrint(BCLog::WALLETDB, "BerkeleyEnvironment::MakeMock\n"); dbenv->set_cachesize(1, 0, 1); dbenv->set_lg_bsize(10485760 * 4); dbenv->set_lg_max(10485760); dbenv->set_lk_max_locks(10000); dbenv->set_lk_max_objects(10000); dbenv->set_flags(DB_AUTO_COMMIT, 1); dbenv->log_set_config(DB_LOG_IN_MEMORY, 1); int ret = dbenv->open(nullptr, DB_CREATE | DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_MPOOL | DB_INIT_TXN | DB_THREAD | DB_PRIVATE, S_IRUSR | S_IWUSR); if (ret > 0) { throw std::runtime_error( strprintf("BerkeleyEnvironment::MakeMock: Error %d opening " "database environment.", ret)); } fDbEnvInit = true; fMockDb = true; } BerkeleyBatch::SafeDbt::SafeDbt() { m_dbt.set_flags(DB_DBT_MALLOC); } BerkeleyBatch::SafeDbt::SafeDbt(void *data, size_t size) : m_dbt(data, size) {} BerkeleyBatch::SafeDbt::~SafeDbt() { if (m_dbt.get_data() != nullptr) { // Clear memory, e.g. in case it was a private key memory_cleanse(m_dbt.get_data(), m_dbt.get_size()); // under DB_DBT_MALLOC, data is malloced by the Dbt, but must be // freed by the caller. // https://docs.oracle.com/cd/E17275_01/html/api_reference/C/dbt.html if (m_dbt.get_flags() & DB_DBT_MALLOC) { free(m_dbt.get_data()); } } } const void *BerkeleyBatch::SafeDbt::get_data() const { return m_dbt.get_data(); } u_int32_t BerkeleyBatch::SafeDbt::get_size() const { return m_dbt.get_size(); } BerkeleyBatch::SafeDbt::operator Dbt *() { return &m_dbt; } bool BerkeleyDatabase::Verify(bilingual_str &errorStr) { fs::path walletDir = env->Directory(); fs::path file_path = walletDir / strFile; - LogPrintf("Using BerkeleyDB version %s\n", - DbEnv::version(nullptr, nullptr, nullptr)); + LogPrintf("Using BerkeleyDB version %s\n", BerkeleyDatabaseVersion()); LogPrintf("Using wallet %s\n", file_path.string()); if (!env->Open(errorStr)) { return false; } if (fs::exists(file_path)) { assert(m_refcount == 0); Db db(env->dbenv.get(), 0); int result = db.verify(strFile.c_str(), nullptr, nullptr, 0); if (result != 0) { errorStr = strprintf(_("%s corrupt. Try using the wallet tool " "bitcoin-wallet to salvage or restoring a backup."), file_path); return false; } } // also return true if files does not exists return true; } void BerkeleyEnvironment::CheckpointLSN(const std::string &strFile) { dbenv->txn_checkpoint(0, 0, 0); if (fMockDb) { return; } dbenv->lsn_reset(strFile.c_str(), 0); } BerkeleyDatabase::~BerkeleyDatabase() { if (env) { LOCK(cs_db); env->CloseDb(strFile); assert(!m_db); size_t erased = env->m_databases.erase(strFile); assert(erased == 1); env->m_fileids.erase(strFile); } } BerkeleyBatch::BerkeleyBatch(BerkeleyDatabase &database, const char *pszMode, bool fFlushOnCloseIn) : pdb(nullptr), activeTxn(nullptr), m_cursor(nullptr), m_database(database) { database.AddRef(); database.Open(pszMode); fReadOnly = (!strchr(pszMode, '+') && !strchr(pszMode, 'w')); fFlushOnClose = fFlushOnCloseIn; env = database.env.get(); pdb = database.m_db.get(); strFile = database.strFile; bool fCreate = strchr(pszMode, 'c') != nullptr; if (fCreate && !Exists(std::string("version"))) { bool fTmp = fReadOnly; fReadOnly = false; Write(std::string("version"), CLIENT_VERSION); fReadOnly = fTmp; } } void BerkeleyDatabase::Open(const char *pszMode) { bool fCreate = strchr(pszMode, 'c') != nullptr; unsigned int nFlags = DB_THREAD; if (fCreate) { nFlags |= DB_CREATE; } { LOCK(cs_db); bilingual_str open_err; if (!env->Open(open_err)) { throw std::runtime_error( "BerkeleyDatabase: Failed to open database environment."); } if (m_db == nullptr) { int ret; std::unique_ptr pdb_temp = std::make_unique(env->dbenv.get(), 0); bool fMockDb = env->IsMock(); if (fMockDb) { DbMpoolFile *mpf = pdb_temp->get_mpf(); ret = mpf->set_flags(DB_MPOOL_NOFILE, 1); if (ret != 0) { throw std::runtime_error(strprintf( "BerkeleyDatabase: Failed to configure for no " "temp file backing for database %s", strFile)); } } ret = pdb_temp->open( nullptr, // Txn pointer fMockDb ? nullptr : strFile.c_str(), // Filename fMockDb ? strFile.c_str() : "main", // Logical db name DB_BTREE, // Database type nFlags, // Flags 0); if (ret != 0) { throw std::runtime_error(strprintf( "BerkeleyDatabase: Error %d, can't open database %s", ret, strFile)); } m_file_path = (env->Directory() / strFile).string(); // Call CheckUniqueFileid on the containing BDB environment to // avoid BDB data consistency bugs that happen when different data // files in the same environment have the same fileid. CheckUniqueFileid(*env, strFile, *pdb_temp, this->env->m_fileids[strFile]); m_db.reset(pdb_temp.release()); } } } void BerkeleyBatch::Flush() { if (activeTxn) { return; } // Flush database activity from memory pool to disk log unsigned int nMinutes = 0; if (fReadOnly) { nMinutes = 1; } // env is nullptr for dummy databases (i.e. in tests). Don't actually flush // if env is nullptr so we don't segfault if (env) { env->dbenv->txn_checkpoint( nMinutes ? gArgs.GetArg("-dblogsize", DEFAULT_WALLET_DBLOGSIZE) * 1024 : 0, nMinutes, 0); } } void BerkeleyDatabase::IncrementUpdateCounter() { ++nUpdateCounter; } BerkeleyBatch::~BerkeleyBatch() { Close(); m_database.RemoveRef(); } void BerkeleyBatch::Close() { if (!pdb) { return; } if (activeTxn) { activeTxn->abort(); } activeTxn = nullptr; pdb = nullptr; CloseCursor(); if (fFlushOnClose) { Flush(); } } void BerkeleyEnvironment::CloseDb(const std::string &strFile) { LOCK(cs_db); auto it = m_databases.find(strFile); assert(it != m_databases.end()); BerkeleyDatabase &database = it->second.get(); if (database.m_db) { // Close the database handle database.m_db->close(0); database.m_db.reset(); } } void BerkeleyEnvironment::ReloadDbEnv() { // Make sure that no Db's are in use AssertLockNotHeld(cs_db); std::unique_lock lock(cs_db); m_db_in_use.wait(lock, [this]() { for (auto &db : m_databases) { if (db.second.get().m_refcount > 0) { return false; } } return true; }); std::vector filenames; for (auto it : m_databases) { filenames.push_back(it.first); } // Close the individual Db's for (const std::string &filename : filenames) { CloseDb(filename); } // Reset the environment // This will flush and close the environment Flush(true); Reset(); bilingual_str open_err; Open(open_err); } bool BerkeleyDatabase::Rewrite(const char *pszSkip) { while (true) { { LOCK(cs_db); if (m_refcount <= 0) { // Flush log data to the dat file env->CloseDb(strFile); env->CheckpointLSN(strFile); m_refcount = -1; bool fSuccess = true; LogPrintf("BerkeleyBatch::Rewrite: Rewriting %s...\n", strFile); std::string strFileRes = strFile + ".rewrite"; { // surround usage of db with extra {} BerkeleyBatch db(*this, "r"); std::unique_ptr pdbCopy = std::make_unique(env->dbenv.get(), 0); int ret = pdbCopy->open(nullptr, // Txn pointer strFileRes.c_str(), // Filename "main", // Logical db name DB_BTREE, // Database type DB_CREATE, // Flags 0); if (ret > 0) { LogPrintf("BerkeleyBatch::Rewrite: Can't create " "database file %s\n", strFileRes); fSuccess = false; } if (db.StartCursor()) { while (fSuccess) { CDataStream ssKey(SER_DISK, CLIENT_VERSION); CDataStream ssValue(SER_DISK, CLIENT_VERSION); bool complete; bool ret1 = db.ReadAtCursor(ssKey, ssValue, complete); if (complete) { break; } if (!ret1) { fSuccess = false; break; } if (pszSkip && strncmp(ssKey.data(), pszSkip, std::min(ssKey.size(), strlen(pszSkip))) == 0) { continue; } if (strncmp(ssKey.data(), "\x07version", 8) == 0) { // Update version: ssValue.clear(); ssValue << CLIENT_VERSION; } Dbt datKey(ssKey.data(), ssKey.size()); Dbt datValue(ssValue.data(), ssValue.size()); int ret2 = pdbCopy->put(nullptr, &datKey, &datValue, DB_NOOVERWRITE); if (ret2 > 0) { fSuccess = false; } } db.CloseCursor(); } if (fSuccess) { db.Close(); env->CloseDb(strFile); if (pdbCopy->close(0)) { fSuccess = false; } } else { pdbCopy->close(0); } } if (fSuccess) { Db dbA(env->dbenv.get(), 0); if (dbA.remove(strFile.c_str(), nullptr, 0)) { fSuccess = false; } Db dbB(env->dbenv.get(), 0); if (dbB.rename(strFileRes.c_str(), nullptr, strFile.c_str(), 0)) { fSuccess = false; } } if (!fSuccess) { LogPrintf("BerkeleyBatch::Rewrite: Failed to rewrite " "database file %s\n", strFileRes); } return fSuccess; } } UninterruptibleSleep(std::chrono::milliseconds{100}); } } void BerkeleyEnvironment::Flush(bool fShutdown) { int64_t nStart = GetTimeMillis(); // Flush log data to the actual data file on all files that are not in use LogPrint(BCLog::WALLETDB, "BerkeleyEnvironment::Flush: [%s] Flush(%s)%s\n", strPath, fShutdown ? "true" : "false", fDbEnvInit ? "" : " database not started"); if (!fDbEnvInit) { return; } { LOCK(cs_db); bool no_dbs_accessed = true; for (auto &db_it : m_databases) { std::string strFile = db_it.first; int nRefCount = db_it.second.get().m_refcount; if (nRefCount < 0) { continue; } LogPrint( BCLog::WALLETDB, "BerkeleyEnvironment::Flush: Flushing %s (refcount = %d)...\n", strFile, nRefCount); if (nRefCount == 0) { // Move log data to the dat file CloseDb(strFile); LogPrint(BCLog::WALLETDB, "BerkeleyEnvironment::Flush: %s checkpoint\n", strFile); dbenv->txn_checkpoint(0, 0, 0); LogPrint(BCLog::WALLETDB, "BerkeleyEnvironment::Flush: %s detach\n", strFile); if (!fMockDb) { dbenv->lsn_reset(strFile.c_str(), 0); } LogPrint(BCLog::WALLETDB, "BerkeleyEnvironment::Flush: %s closed\n", strFile); nRefCount = -1; } else { no_dbs_accessed = false; } } LogPrint(BCLog::WALLETDB, "BerkeleyEnvironment::Flush: Flush(%s)%s took %15dms\n", fShutdown ? "true" : "false", fDbEnvInit ? "" : " database not started", GetTimeMillis() - nStart); if (fShutdown) { char **listp; if (no_dbs_accessed) { dbenv->log_archive(&listp, DB_ARCH_REMOVE); Close(); if (!fMockDb) { fs::remove_all(fs::path(strPath) / "database"); } } } } } bool BerkeleyDatabase::PeriodicFlush() { // Don't flush if we can't acquire the lock. TRY_LOCK(cs_db, lockDb); if (!lockDb) { return false; } // Don't flush if any databases are in use for (auto &it : env->m_databases) { if (it.second.get().m_refcount > 0) { return false; } } // Don't flush if there haven't been any batch writes for this database. if (m_refcount < 0) { return false; } LogPrint(BCLog::WALLETDB, "Flushing %s\n", strFile); int64_t nStart = GetTimeMillis(); // Flush wallet file so it's self contained env->CloseDb(strFile); env->CheckpointLSN(strFile); m_refcount = -1; LogPrint(BCLog::WALLETDB, "Flushed %s %dms\n", strFile, GetTimeMillis() - nStart); return true; } bool BerkeleyDatabase::Backup(const std::string &strDest) const { while (true) { { LOCK(cs_db); if (m_refcount <= 0) { // Flush log data to the dat file env->CloseDb(strFile); env->CheckpointLSN(strFile); // Copy wallet file. fs::path pathSrc = env->Directory() / strFile; fs::path pathDest(strDest); if (fs::is_directory(pathDest)) { pathDest /= strFile; } try { if (fs::equivalent(pathSrc, pathDest)) { LogPrintf("cannot backup to wallet source file %s\n", pathDest.string()); return false; } fs::copy_file(pathSrc, pathDest, fs::copy_option::overwrite_if_exists); LogPrintf("copied %s to %s\n", strFile, pathDest.string()); return true; } catch (const fs::filesystem_error &e) { LogPrintf("error copying %s to %s - %s\n", strFile, pathDest.string(), fsbridge::get_filesystem_error_message(e)); return false; } } } UninterruptibleSleep(std::chrono::milliseconds{100}); } } void BerkeleyDatabase::Flush() { env->Flush(false); } void BerkeleyDatabase::Close() { env->Flush(true); } void BerkeleyDatabase::ReloadDbEnv() { env->ReloadDbEnv(); } bool BerkeleyBatch::StartCursor() { assert(!m_cursor); if (!pdb) { return false; } int ret = pdb->cursor(nullptr, &m_cursor, 0); return ret == 0; } bool BerkeleyBatch::ReadAtCursor(CDataStream &ssKey, CDataStream &ssValue, bool &complete) { complete = false; if (m_cursor == nullptr) { return false; } // Read at cursor SafeDbt datKey; SafeDbt datValue; int ret = m_cursor->get(datKey, datValue, DB_NEXT); if (ret == DB_NOTFOUND) { complete = true; } if (ret != 0) { return false; } else if (datKey.get_data() == nullptr || datValue.get_data() == nullptr) { return false; } // Convert to streams ssKey.SetType(SER_DISK); ssKey.clear(); ssKey.write((char *)datKey.get_data(), datKey.get_size()); ssValue.SetType(SER_DISK); ssValue.clear(); ssValue.write((char *)datValue.get_data(), datValue.get_size()); return true; } void BerkeleyBatch::CloseCursor() { if (!m_cursor) { return; } m_cursor->close(); m_cursor = nullptr; } bool BerkeleyBatch::TxnBegin() { if (!pdb || activeTxn) { return false; } DbTxn *ptxn = env->TxnBegin(); if (!ptxn) { return false; } activeTxn = ptxn; return true; } bool BerkeleyBatch::TxnCommit() { if (!pdb || !activeTxn) { return false; } int ret = activeTxn->commit(0); activeTxn = nullptr; return (ret == 0); } bool BerkeleyBatch::TxnAbort() { if (!pdb || !activeTxn) { return false; } int ret = activeTxn->abort(); activeTxn = nullptr; return (ret == 0); } +std::string BerkeleyDatabaseVersion() { + return DbEnv::version(nullptr, nullptr, nullptr); +} + bool BerkeleyBatch::ReadKey(CDataStream &&key, CDataStream &value) { if (!pdb) { return false; } SafeDbt datKey(key.data(), key.size()); SafeDbt datValue; int ret = pdb->get(activeTxn, datKey, datValue, 0); if (ret == 0 && datValue.get_data() != nullptr) { value.write((char *)datValue.get_data(), datValue.get_size()); return true; } return false; } bool BerkeleyBatch::WriteKey(CDataStream &&key, CDataStream &&value, bool overwrite) { if (!pdb) { return false; } if (fReadOnly) { assert(!"Write called on database in read-only mode"); } SafeDbt datKey(key.data(), key.size()); SafeDbt datValue(value.data(), value.size()); int ret = pdb->put(activeTxn, datKey, datValue, (overwrite ? 0 : DB_NOOVERWRITE)); return (ret == 0); } bool BerkeleyBatch::EraseKey(CDataStream &&key) { if (!pdb) { return false; } if (fReadOnly) { assert(!"Erase called on database in read-only mode"); } SafeDbt datKey(key.data(), key.size()); int ret = pdb->del(activeTxn, datKey, 0); return (ret == 0 || ret == DB_NOTFOUND); } bool BerkeleyBatch::HasKey(CDataStream &&key) { if (!pdb) { return false; } SafeDbt datKey(key.data(), key.size()); int ret = pdb->exists(activeTxn, datKey, 0); return ret == 0; } void BerkeleyDatabase::AddRef() { LOCK(cs_db); if (m_refcount < 0) { m_refcount = 1; } else { m_refcount++; } } void BerkeleyDatabase::RemoveRef() { LOCK(cs_db); m_refcount--; if (env) { env->m_db_in_use.notify_all(); } } std::unique_ptr BerkeleyDatabase::MakeBatch(const char *mode, bool flush_on_close) { return std::make_unique(*this, mode, flush_on_close); } diff --git a/src/wallet/bdb.h b/src/wallet/bdb.h index 7e33cceb4..ea2b9124d 100644 --- a/src/wallet/bdb.h +++ b/src/wallet/bdb.h @@ -1,246 +1,248 @@ // Copyright (c) 2009-2010 Satoshi Nakamoto // Copyright (c) 2009-2020 The Bitcoin Core developers // Distributed under the MIT software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. #ifndef BITCOIN_WALLET_BDB_H #define BITCOIN_WALLET_BDB_H #include #include #include #include #include #include #include #include #include #include #include #include #include struct bilingual_str; static const unsigned int DEFAULT_WALLET_DBLOGSIZE = 100; static const bool DEFAULT_WALLET_PRIVDB = true; struct WalletDatabaseFileId { u_int8_t value[DB_FILE_ID_LEN]; bool operator==(const WalletDatabaseFileId &rhs) const; }; class BerkeleyDatabase; class BerkeleyEnvironment { private: bool fDbEnvInit; bool fMockDb; // Don't change into fs::path, as that can result in // shutdown problems/crashes caused by a static initialized internal // pointer. std::string strPath; public: std::unique_ptr dbenv; std::map> m_databases; std::unordered_map m_fileids; std::condition_variable_any m_db_in_use; BerkeleyEnvironment(const fs::path &env_directory); BerkeleyEnvironment(); ~BerkeleyEnvironment(); void Reset(); void MakeMock(); bool IsMock() const { return fMockDb; } bool IsInitialized() const { return fDbEnvInit; } bool IsDatabaseLoaded(const std::string &db_filename) const { return m_databases.find(db_filename) != m_databases.end(); } fs::path Directory() const { return strPath; } bool Open(bilingual_str &error); void Close(); void Flush(bool fShutdown); void CheckpointLSN(const std::string &strFile); void CloseDb(const std::string &strFile); void ReloadDbEnv(); DbTxn *TxnBegin(int flags = DB_TXN_WRITE_NOSYNC) { DbTxn *ptxn = nullptr; int ret = dbenv->txn_begin(nullptr, &ptxn, flags); if (!ptxn || ret != 0) { return nullptr; } return ptxn; } }; /** Get BerkeleyEnvironment and database filename given a wallet path. */ std::shared_ptr GetWalletEnv(const fs::path &wallet_path, std::string &database_filename); /** Return whether a BDB wallet database is currently loaded. */ bool IsBDBWalletLoaded(const fs::path &wallet_path); class BerkeleyBatch; /** * An instance of this class represents one database. * For BerkeleyDB this is just a (env, strFile) tuple. */ class BerkeleyDatabase : public WalletDatabase { public: BerkeleyDatabase() = delete; /** Create DB handle to real database */ BerkeleyDatabase(std::shared_ptr envIn, std::string filename) : WalletDatabase(), env(std::move(envIn)), strFile(std::move(filename)) { auto inserted = this->env->m_databases.emplace(strFile, std::ref(*this)); assert(inserted.second); } ~BerkeleyDatabase() override; /** * Open the database if it is not already opened. * Dummy function, doesn't do anything right now, but is needed for class * abstraction */ void Open(const char *mode) override; /** * Rewrite the entire database on disk, with the exception of key pszSkip if * non-zero */ bool Rewrite(const char *pszSkip = nullptr) override; /** Indicate the a new database user has began using the database. */ void AddRef() override; /** * Indicate that database user has stopped using the database and that it * could be flushed or closed. */ void RemoveRef() override; /** * Back up the entire database to a file. */ bool Backup(const std::string &strDest) const override; /** * Make sure all changes are flushed to database file. */ void Flush() override; /** * Flush to the database file and close the database. * Also close the environment if no other databases are open in it. */ void Close() override; /** * flush the wallet passively (TRY_LOCK) * ideal to be called periodically */ bool PeriodicFlush() override; void IncrementUpdateCounter() override; void ReloadDbEnv() override; /** Verifies the environment and database file */ bool Verify(bilingual_str &error) override; /** * Pointer to shared database environment. * * Normally there is only one BerkeleyDatabase object per * BerkeleyEnvivonment, but in the special, backwards compatible case where * multiple wallet BDB data files are loaded from the same directory, this * will point to a shared instance that gets freed when the last data file * is closed. */ std::shared_ptr env; /** * Database pointer. This is initialized lazily and reset during flushes, * so it can be null. */ std::unique_ptr m_db; std::string strFile; /** Make a BerkeleyBatch connected to this database */ std::unique_ptr MakeBatch(const char *mode = "r+", bool flush_on_close = true) override; }; /** RAII class that provides access to a Berkeley database */ class BerkeleyBatch : public DatabaseBatch { /** RAII class that automatically cleanses its data on destruction */ class SafeDbt final { Dbt m_dbt; public: // construct Dbt with internally-managed data SafeDbt(); // construct Dbt with provided data SafeDbt(void *data, size_t size); ~SafeDbt(); // delegate to Dbt const void *get_data() const; u_int32_t get_size() const; // conversion operator to access the underlying Dbt operator Dbt *(); }; private: bool ReadKey(CDataStream &&key, CDataStream &value) override; bool WriteKey(CDataStream &&key, CDataStream &&value, bool overwrite = true) override; bool EraseKey(CDataStream &&key) override; bool HasKey(CDataStream &&key) override; protected: Db *pdb; std::string strFile; DbTxn *activeTxn; Dbc *m_cursor; bool fReadOnly; bool fFlushOnClose; BerkeleyEnvironment *env; BerkeleyDatabase &m_database; public: explicit BerkeleyBatch(BerkeleyDatabase &database, const char *pszMode = "r+", bool fFlushOnCloseIn = true); ~BerkeleyBatch() override; BerkeleyBatch(const BerkeleyBatch &) = delete; BerkeleyBatch &operator=(const BerkeleyBatch &) = delete; void Flush() override; void Close() override; bool StartCursor() override; bool ReadAtCursor(CDataStream &ssKey, CDataStream &ssValue, bool &complete) override; void CloseCursor() override; bool TxnBegin() override; bool TxnCommit() override; bool TxnAbort() override; }; +std::string BerkeleyDatabaseVersion(); + #endif // BITCOIN_WALLET_BDB_H