1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
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(), std::ofstream::out | std::ofstream::binary);
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;
}
}
}
|
