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from functools import partial
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import threading
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from PyQt4.Qt import QGridLayout, QInputDialog, QPushButton
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from PyQt4.Qt import QVBoxLayout, QLabel, SIGNAL
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from trezor import TrezorPlugin
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from electrum_gui.qt.main_window import StatusBarButton
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from electrum_gui.qt.password_dialog import PasswordDialog
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from electrum_gui.qt.util import *
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from electrum.i18n import _
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from electrum.plugins import hook
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from electrum.util import PrintError
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class QtHandler(PrintError):
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'''An interface between the GUI (here, QT) and the device handling
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logic for handling I/O. This is a generic implementation of the
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Trezor protocol; derived classes can customize it.'''
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def __init__(self, win, pin_matrix_widget_class, device):
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win.connect(win, SIGNAL('message_done'), self.dialog_stop)
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win.connect(win, SIGNAL('message_dialog'), self.message_dialog)
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win.connect(win, SIGNAL('pin_dialog'), self.pin_dialog)
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win.connect(win, SIGNAL('passphrase_dialog'), self.passphrase_dialog)
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self.win = win
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self.windows = [win]
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self.pin_matrix_widget_class = pin_matrix_widget_class
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self.device = device
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self.done = threading.Event()
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self.dialog = None
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def stop(self):
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self.win.emit(SIGNAL('message_done'))
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def show_message(self, msg, cancel_callback=None):
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self.win.emit(SIGNAL('message_dialog'), msg, cancel_callback)
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def get_pin(self, msg):
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self.done.clear()
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self.win.emit(SIGNAL('pin_dialog'), msg)
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self.done.wait()
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return self.response
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def get_passphrase(self, msg):
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self.done.clear()
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self.win.emit(SIGNAL('passphrase_dialog'), msg)
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self.done.wait()
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return self.passphrase
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def pin_dialog(self, msg):
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# Needed e.g. when renaming label and haven't entered PIN
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self.dialog_stop()
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d = WindowModalDialog(self.windows[-1], _("Enter PIN"))
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matrix = self.pin_matrix_widget_class()
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vbox = QVBoxLayout()
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vbox.addWidget(QLabel(msg))
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vbox.addWidget(matrix)
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vbox.addLayout(Buttons(CancelButton(d), OkButton(d)))
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d.setLayout(vbox)
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if not d.exec_():
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self.response = None # FIXME: this is lost?
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self.response = str(matrix.get_value())
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self.done.set()
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def passphrase_dialog(self, msg):
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self.dialog_stop()
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d = PasswordDialog(self.windows[-1], None, msg,
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PasswordDialog.PW_PASSHPRASE)
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confirmed, p, passphrase = d.run()
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if confirmed:
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passphrase = TrezorPlugin.normalize_passphrase(passphrase)
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self.passphrase = passphrase
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self.done.set()
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def message_dialog(self, msg, cancel_callback):
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# Called more than once during signing, to confirm output and fee
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self.dialog_stop()
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title = _('Please check your %s device') % self.device
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dialog = self.dialog = WindowModalDialog(self.windows[-1], title)
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l = QLabel(msg)
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vbox = QVBoxLayout(dialog)
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if cancel_callback:
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vbox.addLayout(Buttons(CancelButton(dialog)))
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dialog.connect(dialog, SIGNAL('rejected()'), cancel_callback)
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vbox.addWidget(l)
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dialog.show()
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def dialog_stop(self):
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if self.dialog:
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self.dialog.hide()
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self.dialog = None
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def pop_window(self):
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self.windows.pop()
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def push_window(self, window):
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self.windows.append(window)
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class QtPlugin(TrezorPlugin):
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# Derived classes must provide the following class-static variables:
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# icon_file
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# pin_matrix_widget_class
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def create_handler(self, window):
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return QtHandler(window, self.pin_matrix_widget_class(), self.device)
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@hook
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def load_wallet(self, wallet, window):
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if type(wallet) != self.wallet_class:
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return
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try:
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client = self.get_client(wallet)
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client.handler = self.create_handler(window)
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client.check_proper_device(wallet)
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self.button = StatusBarButton(QIcon(self.icon_file), self.device,
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partial(self.settings_dialog, window))
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window.statusBar().addPermanentWidget(self.button)
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except Exception as e:
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window.show_error(str(e))
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def on_create_wallet(self, wallet, wizard):
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client = self.get_client(wallet)
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client.handler = self.create_handler(wizard)
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wallet.create_main_account(None)
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@hook
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def receive_menu(self, menu, addrs, wallet):
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if type(wallet) != self.wallet_class:
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return
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if (not wallet.is_watching_only() and
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self.atleast_version(1, 3) and len(addrs) == 1):
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menu.addAction(_("Show on %s") % self.device,
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lambda: self.show_address(wallet, addrs[0]))
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def settings_dialog(self, window):
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handler = self.get_client(window.wallet).handler
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def rename():
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title = _("Set Device Label")
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msg = _("Enter new label:")
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response = QInputDialog().getText(dialog, title, msg)
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if not response[1]:
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return
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new_label = str(response[0])
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try:
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client.change_label(new_label)
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finally:
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handler.stop()
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device_label.setText(new_label)
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def update_pin_info():
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features = client.features
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pin_label.setText(noyes[features.pin_protection])
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pin_button.setText(_("Change") if features.pin_protection
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else _("Set"))
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clear_pin_button.setVisible(features.pin_protection)
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def set_pin(remove):
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try:
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client.set_pin(remove=remove)
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finally:
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handler.stop()
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update_pin_info()
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client = self.get_client()
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features = client.features
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noyes = [_("No"), _("Yes")]
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bl_hash = features.bootloader_hash.encode('hex').upper()
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bl_hash = "%s...%s" % (bl_hash[:10], bl_hash[-10:])
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info_tab = QWidget()
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layout = QGridLayout(info_tab)
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device_label = QLabel(features.label)
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rename_button = QPushButton(_("Rename"))
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rename_button.clicked.connect(rename)
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pin_label = QLabel()
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pin_button = QPushButton()
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pin_button.clicked.connect(partial(set_pin, False))
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clear_pin_button = QPushButton(_("Clear"))
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clear_pin_button.clicked.connect(partial(set_pin, True))
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update_pin_info()
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version = "%d.%d.%d" % (features.major_version,
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features.minor_version,
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features.patch_version)
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rows = [
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(_("Bootloader Hash"), bl_hash),
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(_("Device ID"), features.device_id),
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(_("Device Label"), device_label, rename_button),
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(_("Firmware Version"), version),
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(_("Language"), features.language),
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(_("Has Passphrase"), noyes[features.passphrase_protection]),
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(_("Has PIN"), pin_label, pin_button, clear_pin_button)
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]
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for row_num, items in enumerate(rows):
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for col_num, item in enumerate(items):
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widget = item if isinstance(item, QWidget) else QLabel(item)
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layout.addWidget(widget, row_num, col_num)
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dialog = WindowModalDialog(None, _("%s Settings") % self.device)
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vbox = QVBoxLayout()
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tabs = QTabWidget()
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tabs.addTab(info_tab, _("Information"))
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tabs.addTab(QWidget(), _("Advanced"))
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vbox.addWidget(tabs)
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vbox.addStretch(1)
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vbox.addLayout(Buttons(CloseButton(dialog)))
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dialog.setLayout(vbox)
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handler.push_window(dialog)
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try:
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dialog.exec_()
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finally:
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handler.pop_window()
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