diff options
Diffstat (limited to 'src/qt/psbtoperationsdialog.cpp')
| -rw-r--r-- | src/qt/psbtoperationsdialog.cpp | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/src/qt/psbtoperationsdialog.cpp b/src/qt/psbtoperationsdialog.cpp new file mode 100644 index 0000000000..58167d4bb4 --- /dev/null +++ b/src/qt/psbtoperationsdialog.cpp @@ -0,0 +1,268 @@ +// Copyright (c) 2011-2020 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 <qt/psbtoperationsdialog.h> + +#include <core_io.h> +#include <interfaces/node.h> +#include <key_io.h> +#include <node/psbt.h> +#include <policy/policy.h> +#include <qt/bitcoinunits.h> +#include <qt/forms/ui_psbtoperationsdialog.h> +#include <qt/guiutil.h> +#include <qt/optionsmodel.h> +#include <util/strencodings.h> + +#include <iostream> + + +PSBTOperationsDialog::PSBTOperationsDialog( + QWidget* parent, WalletModel* wallet_model, ClientModel* client_model) : QDialog(parent), + m_ui(new Ui::PSBTOperationsDialog), + m_wallet_model(wallet_model), + m_client_model(client_model) +{ + m_ui->setupUi(this); + setWindowTitle("PSBT Operations"); + + connect(m_ui->signTransactionButton, &QPushButton::clicked, this, &PSBTOperationsDialog::signTransaction); + connect(m_ui->broadcastTransactionButton, &QPushButton::clicked, this, &PSBTOperationsDialog::broadcastTransaction); + connect(m_ui->copyToClipboardButton, &QPushButton::clicked, this, &PSBTOperationsDialog::copyToClipboard); + connect(m_ui->saveButton, &QPushButton::clicked, this, &PSBTOperationsDialog::saveTransaction); + + connect(m_ui->closeButton, &QPushButton::clicked, this, &PSBTOperationsDialog::close); + + m_ui->signTransactionButton->setEnabled(false); + m_ui->broadcastTransactionButton->setEnabled(false); +} + +PSBTOperationsDialog::~PSBTOperationsDialog() +{ + delete m_ui; +} + +void PSBTOperationsDialog::openWithPSBT(PartiallySignedTransaction psbtx) +{ + m_transaction_data = psbtx; + + bool complete; + size_t n_could_sign; + FinalizePSBT(psbtx); // Make sure all existing signatures are fully combined before checking for completeness. + TransactionError err = m_wallet_model->wallet().fillPSBT(SIGHASH_ALL, false /* sign */, true /* bip32derivs */, m_transaction_data, complete, &n_could_sign); + if (err != TransactionError::OK) { + showStatus(tr("Failed to load transaction: %1") + .arg(QString::fromStdString(TransactionErrorString(err).translated)), StatusLevel::ERR); + return; + } + + m_ui->broadcastTransactionButton->setEnabled(complete); + m_ui->signTransactionButton->setEnabled(!complete && !m_wallet_model->wallet().privateKeysDisabled() && n_could_sign > 0); + + updateTransactionDisplay(); +} + +void PSBTOperationsDialog::signTransaction() +{ + bool complete; + size_t n_signed; + TransactionError err = m_wallet_model->wallet().fillPSBT(SIGHASH_ALL, true /* sign */, true /* bip32derivs */, m_transaction_data, complete, &n_signed); + + if (err != TransactionError::OK) { + showStatus(tr("Failed to sign transaction: %1") + .arg(QString::fromStdString(TransactionErrorString(err).translated)), StatusLevel::ERR); + return; + } + + updateTransactionDisplay(); + + if (!complete && n_signed < 1) { + showStatus(tr("Could not sign any more inputs."), StatusLevel::WARN); + } else if (!complete) { + showStatus(tr("Signed %1 inputs, but more signatures are still required.").arg(n_signed), + StatusLevel::INFO); + } else { + showStatus(tr("Signed transaction successfully. Transaction is ready to broadcast."), + StatusLevel::INFO); + m_ui->broadcastTransactionButton->setEnabled(true); + } +} + +void PSBTOperationsDialog::broadcastTransaction() +{ + CMutableTransaction mtx; + if (!FinalizeAndExtractPSBT(m_transaction_data, mtx)) { + // This is never expected to fail unless we were given a malformed PSBT + // (e.g. with an invalid signature.) + showStatus(tr("Unknown error processing transaction."), StatusLevel::ERR); + return; + } + + CTransactionRef tx = MakeTransactionRef(mtx); + std::string err_string; + TransactionError error = BroadcastTransaction( + *m_client_model->node().context(), tx, err_string, DEFAULT_MAX_RAW_TX_FEE_RATE.GetFeePerK(), /* relay */ true, /* await_callback */ false); + + if (error == TransactionError::OK) { + showStatus(tr("Transaction broadcast successfully! Transaction ID: %1") + .arg(QString::fromStdString(tx->GetHash().GetHex())), StatusLevel::INFO); + } else { + showStatus(tr("Transaction broadcast failed: %1") + .arg(QString::fromStdString(TransactionErrorString(error).translated)), StatusLevel::ERR); + } +} + +void PSBTOperationsDialog::copyToClipboard() { + CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION); + ssTx << m_transaction_data; + GUIUtil::setClipboard(EncodeBase64(ssTx.str()).c_str()); + showStatus(tr("PSBT copied to clipboard."), StatusLevel::INFO); +} + +void PSBTOperationsDialog::saveTransaction() { + CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION); + ssTx << m_transaction_data; + + QString selected_filter; + QString filename_suggestion = ""; + bool first = true; + for (const CTxOut& out : m_transaction_data.tx->vout) { + if (!first) { + filename_suggestion.append("-"); + } + CTxDestination address; + ExtractDestination(out.scriptPubKey, address); + QString amount = BitcoinUnits::format(m_wallet_model->getOptionsModel()->getDisplayUnit(), out.nValue); + QString address_str = QString::fromStdString(EncodeDestination(address)); + filename_suggestion.append(address_str + "-" + amount); + first = false; + } + filename_suggestion.append(".psbt"); + QString filename = GUIUtil::getSaveFileName(this, + tr("Save Transaction Data"), filename_suggestion, + tr("Partially Signed Transaction (Binary) (*.psbt)"), &selected_filter); + if (filename.isEmpty()) { + return; + } + std::ofstream out(filename.toLocal8Bit().data()); + out << ssTx.str(); + out.close(); + showStatus(tr("PSBT saved to disk."), StatusLevel::INFO); +} + +void PSBTOperationsDialog::updateTransactionDisplay() { + m_ui->transactionDescription->setText(QString::fromStdString(renderTransaction(m_transaction_data))); + showTransactionStatus(m_transaction_data); +} + +std::string PSBTOperationsDialog::renderTransaction(const PartiallySignedTransaction &psbtx) +{ + QString tx_description = ""; + CAmount totalAmount = 0; + for (const CTxOut& out : psbtx.tx->vout) { + CTxDestination address; + ExtractDestination(out.scriptPubKey, address); + totalAmount += out.nValue; + tx_description.append(tr(" * Sends %1 to %2") + .arg(BitcoinUnits::formatWithUnit(BitcoinUnits::BTC, out.nValue)) + .arg(QString::fromStdString(EncodeDestination(address)))); + tx_description.append("<br>"); + } + + PSBTAnalysis analysis = AnalyzePSBT(psbtx); + tx_description.append(" * "); + if (!*analysis.fee) { + // This happens if the transaction is missing input UTXO information. + tx_description.append(tr("Unable to calculate transaction fee or total transaction amount.")); + } else { + tx_description.append(tr("Pays transaction fee: ")); + tx_description.append(BitcoinUnits::formatWithUnit(BitcoinUnits::BTC, *analysis.fee)); + + // add total amount in all subdivision units + tx_description.append("<hr />"); + QStringList alternativeUnits; + for (const BitcoinUnits::Unit u : BitcoinUnits::availableUnits()) + { + if(u != m_client_model->getOptionsModel()->getDisplayUnit()) { + alternativeUnits.append(BitcoinUnits::formatHtmlWithUnit(u, totalAmount)); + } + } + tx_description.append(QString("<b>%1</b>: <b>%2</b>").arg(tr("Total Amount")) + .arg(BitcoinUnits::formatHtmlWithUnit(m_client_model->getOptionsModel()->getDisplayUnit(), totalAmount))); + tx_description.append(QString("<br /><span style='font-size:10pt; font-weight:normal;'>(=%1)</span>") + .arg(alternativeUnits.join(" " + tr("or") + " "))); + } + + size_t num_unsigned = CountPSBTUnsignedInputs(psbtx); + if (num_unsigned > 0) { + tx_description.append("<br><br>"); + tx_description.append(tr("Transaction has %1 unsigned inputs.").arg(QString::number(num_unsigned))); + } + + return tx_description.toStdString(); +} + +void PSBTOperationsDialog::showStatus(const QString &msg, StatusLevel level) { + m_ui->statusBar->setText(msg); + switch (level) { + case StatusLevel::INFO: { + m_ui->statusBar->setStyleSheet("QLabel { background-color : lightgreen }"); + break; + } + case StatusLevel::WARN: { + m_ui->statusBar->setStyleSheet("QLabel { background-color : orange }"); + break; + } + case StatusLevel::ERR: { + m_ui->statusBar->setStyleSheet("QLabel { background-color : red }"); + break; + } + } + m_ui->statusBar->show(); +} + +size_t PSBTOperationsDialog::couldSignInputs(const PartiallySignedTransaction &psbtx) { + size_t n_signed; + bool complete; + TransactionError err = m_wallet_model->wallet().fillPSBT(SIGHASH_ALL, false /* sign */, false /* bip32derivs */, m_transaction_data, complete, &n_signed); + + if (err != TransactionError::OK) { + return 0; + } + return n_signed; +} + +void PSBTOperationsDialog::showTransactionStatus(const PartiallySignedTransaction &psbtx) { + PSBTAnalysis analysis = AnalyzePSBT(psbtx); + size_t n_could_sign = couldSignInputs(psbtx); + + switch (analysis.next) { + case PSBTRole::UPDATER: { + showStatus(tr("Transaction is missing some information about inputs."), StatusLevel::WARN); + break; + } + case PSBTRole::SIGNER: { + QString need_sig_text = tr("Transaction still needs signature(s)."); + StatusLevel level = StatusLevel::INFO; + if (m_wallet_model->wallet().privateKeysDisabled()) { + need_sig_text += " " + tr("(But this wallet cannot sign transactions.)"); + level = StatusLevel::WARN; + } else if (n_could_sign < 1) { + need_sig_text += " " + tr("(But this wallet does not have the right keys.)"); // XXX wording + level = StatusLevel::WARN; + } + showStatus(need_sig_text, level); + break; + } + case PSBTRole::FINALIZER: + case PSBTRole::EXTRACTOR: { + showStatus(tr("Transaction is fully signed and ready for broadcast."), StatusLevel::INFO); + break; + } + default: { + showStatus(tr("Transaction status is unknown."), StatusLevel::ERR); + break; + } + } +} |