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398 lines
16 KiB
398 lines
16 KiB
#!/usr/bin/env python
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#
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# Electrum - lightweight Bitcoin client
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# Copyright (C) 2012 thomasv@gitorious
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#
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# Permission is hereby granted, free of charge, to any person
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# obtaining a copy of this software and associated documentation files
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# (the "Software"), to deal in the Software without restriction,
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# including without limitation the rights to use, copy, modify, merge,
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# publish, distribute, sublicense, and/or sell copies of the Software,
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# and to permit persons to whom the Software is furnished to do so,
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# subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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import sys
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import copy
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import datetime
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import json
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import traceback
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from typing import TYPE_CHECKING
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from PyQt5.QtCore import QSize, Qt
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from PyQt5.QtGui import QTextCharFormat, QBrush, QFont
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from PyQt5.QtWidgets import (QDialog, QLabel, QPushButton, QHBoxLayout, QVBoxLayout,
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QTextEdit, QFrame)
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import qrcode
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from qrcode import exceptions
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from electrum.bitcoin import base_encode
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from electrum.i18n import _
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from electrum.plugin import run_hook
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from electrum import simple_config
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from electrum.util import bfh
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from electrum.transaction import SerializationError, Transaction
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from electrum.logging import get_logger
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from .util import (MessageBoxMixin, read_QIcon, Buttons, CopyButton,
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MONOSPACE_FONT, ColorScheme, ButtonsLineEdit)
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if TYPE_CHECKING:
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from .main_window import ElectrumWindow
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SAVE_BUTTON_ENABLED_TOOLTIP = _("Save transaction offline")
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SAVE_BUTTON_DISABLED_TOOLTIP = _("Please sign this transaction in order to save it")
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_logger = get_logger(__name__)
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dialogs = [] # Otherwise python randomly garbage collects the dialogs...
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def show_transaction(tx, parent, desc=None, prompt_if_unsaved=False):
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try:
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d = TxDialog(tx, parent, desc, prompt_if_unsaved)
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except SerializationError as e:
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_logger.exception('unable to deserialize the transaction')
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parent.show_critical(_("Electrum was unable to deserialize the transaction:") + "\n" + str(e))
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else:
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dialogs.append(d)
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d.show()
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class TxDialog(QDialog, MessageBoxMixin):
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def __init__(self, tx, parent, desc, prompt_if_unsaved):
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'''Transactions in the wallet will show their description.
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Pass desc to give a description for txs not yet in the wallet.
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'''
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# We want to be a top-level window
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QDialog.__init__(self, parent=None)
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# Take a copy; it might get updated in the main window by
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# e.g. the FX plugin. If this happens during or after a long
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# sign operation the signatures are lost.
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self.tx = tx = copy.deepcopy(tx) # type: Transaction
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try:
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self.tx.deserialize()
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except BaseException as e:
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raise SerializationError(e)
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self.main_window = parent # type: ElectrumWindow
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self.wallet = parent.wallet
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self.prompt_if_unsaved = prompt_if_unsaved
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self.saved = False
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self.desc = desc
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# if the wallet can populate the inputs with more info, do it now.
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# as a result, e.g. we might learn an imported address tx is segwit,
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# in which case it's ok to display txid
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tx.add_inputs_info(self.wallet)
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self.setMinimumWidth(950)
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self.setWindowTitle(_("Transaction"))
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vbox = QVBoxLayout()
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self.setLayout(vbox)
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vbox.addWidget(QLabel(_("Transaction ID:")))
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self.tx_hash_e = ButtonsLineEdit()
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qr_show = lambda: parent.show_qrcode(str(self.tx_hash_e.text()), 'Transaction ID', parent=self)
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qr_icon = "qrcode_white.png" if ColorScheme.dark_scheme else "qrcode.png"
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self.tx_hash_e.addButton(qr_icon, qr_show, _("Show as QR code"))
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self.tx_hash_e.setReadOnly(True)
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vbox.addWidget(self.tx_hash_e)
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self.add_tx_stats(vbox)
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vbox.addSpacing(10)
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self.add_io(vbox)
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self.sign_button = b = QPushButton(_("Sign"))
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b.clicked.connect(self.sign)
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self.broadcast_button = b = QPushButton(_("Broadcast"))
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b.clicked.connect(self.do_broadcast)
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self.save_button = b = QPushButton(_("Save"))
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save_button_disabled = not tx.is_complete()
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b.setDisabled(save_button_disabled)
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if save_button_disabled:
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b.setToolTip(SAVE_BUTTON_DISABLED_TOOLTIP)
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else:
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b.setToolTip(SAVE_BUTTON_ENABLED_TOOLTIP)
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b.clicked.connect(self.save)
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self.export_button = b = QPushButton(_("Export"))
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b.clicked.connect(self.export)
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self.cancel_button = b = QPushButton(_("Close"))
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b.clicked.connect(self.close)
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b.setDefault(True)
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self.qr_button = b = QPushButton()
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b.setIcon(read_QIcon(qr_icon))
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b.clicked.connect(self.show_qr)
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self.copy_button = CopyButton(lambda: str(self.tx), parent.app)
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# Action buttons
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self.buttons = [self.sign_button, self.broadcast_button, self.cancel_button]
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# Transaction sharing buttons
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self.sharing_buttons = [self.copy_button, self.qr_button, self.export_button, self.save_button]
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run_hook('transaction_dialog', self)
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hbox = QHBoxLayout()
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hbox.addLayout(Buttons(*self.sharing_buttons))
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hbox.addStretch(1)
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hbox.addLayout(Buttons(*self.buttons))
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vbox.addLayout(hbox)
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self.update()
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def do_broadcast(self):
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self.main_window.push_top_level_window(self)
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try:
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self.main_window.broadcast_transaction(self.tx, self.desc)
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finally:
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self.main_window.pop_top_level_window(self)
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self.saved = True
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self.update()
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def closeEvent(self, event):
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if (self.prompt_if_unsaved and not self.saved
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and not self.question(_('This transaction is not saved. Close anyway?'), title=_("Warning"))):
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event.ignore()
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else:
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event.accept()
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try:
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dialogs.remove(self)
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except ValueError:
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pass # was not in list already
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def reject(self):
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# Override escape-key to close normally (and invoke closeEvent)
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self.close()
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def show_qr(self):
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text = bfh(str(self.tx))
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text = base_encode(text, base=43)
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try:
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self.main_window.show_qrcode(text, 'Transaction', parent=self)
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except qrcode.exceptions.DataOverflowError:
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self.show_error(_('Failed to display QR code.') + '\n' +
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_('Transaction is too large in size.'))
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except Exception as e:
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self.show_error(_('Failed to display QR code.') + '\n' + repr(e))
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def sign(self):
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def sign_done(success):
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# note: with segwit we could save partially signed tx, because they have a txid
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if self.tx.is_complete():
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self.prompt_if_unsaved = True
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self.saved = False
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self.save_button.setDisabled(False)
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self.save_button.setToolTip(SAVE_BUTTON_ENABLED_TOOLTIP)
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self.update()
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self.main_window.pop_top_level_window(self)
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self.sign_button.setDisabled(True)
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self.main_window.push_top_level_window(self)
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self.main_window.sign_tx(self.tx, sign_done)
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def save(self):
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self.main_window.push_top_level_window(self)
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if self.main_window.save_transaction_into_wallet(self.tx):
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self.save_button.setDisabled(True)
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self.saved = True
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self.main_window.pop_top_level_window(self)
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def export(self):
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name = 'signed_%s.txn' % (self.tx.txid()[0:8]) if self.tx.is_complete() else 'unsigned.txn'
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fileName = self.main_window.getSaveFileName(_("Select where to save your signed transaction"), name, "*.txn")
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if fileName:
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with open(fileName, "w+") as f:
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f.write(json.dumps(self.tx.as_dict(), indent=4) + '\n')
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self.show_message(_("Transaction exported successfully"))
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self.saved = True
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def update(self):
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desc = self.desc
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base_unit = self.main_window.base_unit()
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format_amount = self.main_window.format_amount
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tx_details = self.wallet.get_tx_info(self.tx)
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tx_mined_status = tx_details.tx_mined_status
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exp_n = tx_details.mempool_depth_bytes
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amount, fee = tx_details.amount, tx_details.fee
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size = self.tx.estimated_size()
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self.broadcast_button.setEnabled(tx_details.can_broadcast)
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can_sign = not self.tx.is_complete() and \
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(self.wallet.can_sign(self.tx) or bool(self.main_window.tx_external_keypairs))
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self.sign_button.setEnabled(can_sign)
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self.tx_hash_e.setText(tx_details.txid or _('Unknown'))
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if desc is None:
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self.tx_desc.hide()
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else:
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self.tx_desc.setText(_("Description") + ': ' + desc)
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self.tx_desc.show()
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self.status_label.setText(_('Status:') + ' ' + tx_details.status)
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if tx_mined_status.timestamp:
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time_str = datetime.datetime.fromtimestamp(tx_mined_status.timestamp).isoformat(' ')[:-3]
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self.date_label.setText(_("Date: {}").format(time_str))
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self.date_label.show()
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elif exp_n:
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text = '%.2f MB'%(exp_n/1000000)
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self.date_label.setText(_('Position in mempool: {} from tip').format(text))
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self.date_label.show()
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else:
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self.date_label.hide()
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self.locktime_label.setText(f"LockTime: {self.tx.locktime}")
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self.rbf_label.setText(f"RBF: {not self.tx.is_final()}")
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if tx_mined_status.header_hash:
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self.block_hash_label.setText(_("Included in block: {}")
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.format(tx_mined_status.header_hash))
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self.block_height_label.setText(_("At block height: {}")
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.format(tx_mined_status.height))
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else:
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self.block_hash_label.hide()
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self.block_height_label.hide()
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if amount is None:
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amount_str = _("Transaction unrelated to your wallet")
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elif amount > 0:
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amount_str = _("Amount received:") + ' %s'% format_amount(amount) + ' ' + base_unit
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else:
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amount_str = _("Amount sent:") + ' %s'% format_amount(-amount) + ' ' + base_unit
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size_str = _("Size:") + ' %d bytes'% size
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fee_str = _("Fee") + ': %s' % (format_amount(fee) + ' ' + base_unit if fee is not None else _('unknown'))
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if fee is not None:
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fee_rate = fee/size*1000
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fee_str += ' ( %s ) ' % self.main_window.format_fee_rate(fee_rate)
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feerate_warning = simple_config.FEERATE_WARNING_HIGH_FEE
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if fee_rate > feerate_warning:
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fee_str += ' - ' + _('Warning') + ': ' + _("high fee") + '!'
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self.amount_label.setText(amount_str)
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self.fee_label.setText(fee_str)
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self.size_label.setText(size_str)
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run_hook('transaction_dialog_update', self)
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def add_io(self, vbox):
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vbox.addWidget(QLabel(_("Inputs") + ' (%d)'%len(self.tx.inputs())))
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ext = QTextCharFormat()
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rec = QTextCharFormat()
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rec.setBackground(QBrush(ColorScheme.GREEN.as_color(background=True)))
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rec.setToolTip(_("Wallet receive address"))
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chg = QTextCharFormat()
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chg.setBackground(QBrush(ColorScheme.YELLOW.as_color(background=True)))
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chg.setToolTip(_("Wallet change address"))
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twofactor = QTextCharFormat()
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twofactor.setBackground(QBrush(ColorScheme.BLUE.as_color(background=True)))
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twofactor.setToolTip(_("TrustedCoin (2FA) fee for the next batch of transactions"))
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def text_format(addr):
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if self.wallet.is_mine(addr):
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return chg if self.wallet.is_change(addr) else rec
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elif self.wallet.is_billing_address(addr):
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return twofactor
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return ext
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def format_amount(amt):
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return self.main_window.format_amount(amt, whitespaces=True)
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i_text = QTextEditWithDefaultSize()
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i_text.setFont(QFont(MONOSPACE_FONT))
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i_text.setReadOnly(True)
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cursor = i_text.textCursor()
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for x in self.tx.inputs():
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if x['type'] == 'coinbase':
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cursor.insertText('coinbase')
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else:
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prevout_hash = x.get('prevout_hash')
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prevout_n = x.get('prevout_n')
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cursor.insertText(prevout_hash + ":%-4d " % prevout_n, ext)
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addr = self.wallet.get_txin_address(x)
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if addr is None:
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addr = ''
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cursor.insertText(addr, text_format(addr))
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if x.get('value'):
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cursor.insertText(format_amount(x['value']), ext)
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cursor.insertBlock()
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vbox.addWidget(i_text)
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vbox.addWidget(QLabel(_("Outputs") + ' (%d)'%len(self.tx.outputs())))
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o_text = QTextEditWithDefaultSize()
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o_text.setFont(QFont(MONOSPACE_FONT))
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o_text.setReadOnly(True)
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cursor = o_text.textCursor()
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for o in self.tx.get_outputs_for_UI():
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addr, v = o.address, o.value
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cursor.insertText(addr, text_format(addr))
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if v is not None:
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cursor.insertText('\t', ext)
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cursor.insertText(format_amount(v), ext)
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cursor.insertBlock()
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vbox.addWidget(o_text)
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def add_tx_stats(self, vbox):
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hbox_stats = QHBoxLayout()
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# left column
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vbox_left = QVBoxLayout()
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self.tx_desc = TxDetailLabel(word_wrap=True)
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vbox_left.addWidget(self.tx_desc)
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self.status_label = TxDetailLabel()
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vbox_left.addWidget(self.status_label)
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self.date_label = TxDetailLabel()
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vbox_left.addWidget(self.date_label)
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self.amount_label = TxDetailLabel()
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vbox_left.addWidget(self.amount_label)
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self.fee_label = TxDetailLabel()
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vbox_left.addWidget(self.fee_label)
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vbox_left.addStretch(1)
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hbox_stats.addLayout(vbox_left, 50)
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# vertical line separator
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line_separator = QFrame()
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line_separator.setFrameShape(QFrame.VLine)
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line_separator.setFrameShadow(QFrame.Sunken)
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line_separator.setLineWidth(1)
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hbox_stats.addWidget(line_separator)
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# right column
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vbox_right = QVBoxLayout()
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self.size_label = TxDetailLabel()
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vbox_right.addWidget(self.size_label)
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self.rbf_label = TxDetailLabel()
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vbox_right.addWidget(self.rbf_label)
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self.locktime_label = TxDetailLabel()
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vbox_right.addWidget(self.locktime_label)
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self.block_hash_label = TxDetailLabel(word_wrap=True)
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vbox_right.addWidget(self.block_hash_label)
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self.block_height_label = TxDetailLabel()
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vbox_right.addWidget(self.block_height_label)
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vbox_right.addStretch(1)
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hbox_stats.addLayout(vbox_right, 50)
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vbox.addLayout(hbox_stats)
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class QTextEditWithDefaultSize(QTextEdit):
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def sizeHint(self):
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return QSize(0, 100)
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class TxDetailLabel(QLabel):
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def __init__(self, *, word_wrap=None):
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super().__init__()
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self.setTextInteractionFlags(Qt.TextSelectableByMouse)
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if word_wrap is not None:
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self.setWordWrap(word_wrap)
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