191 lines
6.7 KiB
Python
191 lines
6.7 KiB
Python
from sys import stderr
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from electrum.i18n import _
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from electrum.util import PrintError
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class GuiMixin(object):
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# Requires: self.proto, self.device
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messages = {
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3: _("Confirm transaction outputs on %s device to continue"),
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8: _("Confirm transaction fee on %s device to continue"),
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7: _("Confirm message to sign on %s device to continue"),
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10: _("Confirm address on %s device to continue"),
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'change pin': _("Confirm PIN change on %s device to continue"),
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'default': _("Check %s device to continue"),
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'homescreen': _("Confirm home screen change on %s device to continue"),
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'label': _("Confirm label change on %s device to continue"),
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'remove pin': _("Confirm removal of PIN on %s device to continue"),
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'passphrase': _("Confirm on %s device to continue"),
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}
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def callback_ButtonRequest(self, msg):
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msg_code = self.msg_code_override or msg.code
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message = self.messages.get(msg_code, self.messages['default'])
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self.handler.show_message(message % self.device, self.cancel)
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return self.proto.ButtonAck()
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def callback_PinMatrixRequest(self, msg):
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if msg.type == 1:
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msg = _("Enter your current %s PIN:")
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elif msg.type == 2:
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msg = _("Enter a new %s PIN:")
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elif msg.type == 3:
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msg = (_("Please re-enter your new %s PIN.\n"
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"Note the numbers have been shuffled!"))
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else:
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msg = _("Please enter %s PIN")
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pin = self.handler.get_pin(msg % self.device)
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if not pin:
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return self.proto.Cancel()
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return self.proto.PinMatrixAck(pin=pin)
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def callback_PassphraseRequest(self, req):
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msg = _("Please enter your %s passphrase")
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passphrase = self.handler.get_passphrase(msg % self.device)
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if passphrase is None:
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return self.proto.Cancel()
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return self.proto.PassphraseAck(passphrase=passphrase)
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def callback_WordRequest(self, msg):
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msg = _("Enter seed word as explained on your %s") % self.device
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word = self.handler.get_word(msg)
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if word is None:
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return self.proto.Cancel()
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return self.proto.WordAck(word=word)
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class TrezorClientBase(GuiMixin, PrintError):
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def __init__(self, handler, plugin, hid_id, proto):
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assert hasattr(self, 'tx_api') # ProtocolMixin already constructed?
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self.proto = proto
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self.device = plugin.device
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self.handler = handler
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self.hid_id_ = hid_id
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self.tx_api = plugin
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self.msg_code_override = None
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def __str__(self):
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return "%s/%s" % (self.label(), self.hid_id())
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def label(self):
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'''The name given by the user to the device.'''
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return self.features.label
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def hid_id(self):
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'''The HID ID of the device.'''
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return self.hid_id_
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def is_initialized(self):
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'''True if initialized, False if wiped.'''
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return self.features.initialized
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@staticmethod
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def expand_path(n):
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'''Convert bip32 path to list of uint32 integers with prime flags
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0/-1/1' -> [0, 0x80000001, 0x80000001]'''
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# This code is similar to code in trezorlib where it unforunately
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# is not declared as a staticmethod. Our n has an extra element.
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PRIME_DERIVATION_FLAG = 0x80000000
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path = []
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for x in n.split('/')[1:]:
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prime = 0
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if x.endswith("'"):
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x = x.replace('\'', '')
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prime = PRIME_DERIVATION_FLAG
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if x.startswith('-'):
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prime = PRIME_DERIVATION_FLAG
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path.append(abs(int(x)) | prime)
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return path
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def cancel(self):
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'''Provided here as in keepkeylib but not trezorlib.'''
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self.transport.write(self.proto.Cancel())
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def first_address(self, derivation):
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return self.address_from_derivation(derivation)
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def address_from_derivation(self, derivation):
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return self.get_address('Bitcoin', self.expand_path(derivation))
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def toggle_passphrase(self):
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self.msg_code_override = 'passphrase'
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try:
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enabled = not self.features.passphrase_protection
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self.apply_settings(use_passphrase=enabled)
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finally:
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self.msg_code_override = None
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def change_label(self, label):
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self.msg_code_override = 'label'
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try:
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self.apply_settings(label=label)
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finally:
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self.msg_code_override = None
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def change_homescreen(self, homescreen):
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self.msg_code_override = 'homescreen'
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try:
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self.apply_settings(homescreen=homescreen)
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finally:
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self.msg_code_override = None
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def set_pin(self, remove):
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self.msg_code_override = 'remove pin' if remove else 'change pin'
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try:
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self.change_pin(remove)
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finally:
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self.msg_code_override = None
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def clear_session(self):
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'''Clear the session to force pin (and passphrase if enabled)
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re-entry. Does not leak exceptions.'''
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self.print_error("clear session:", self)
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try:
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super(TrezorClientBase, self).clear_session()
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except BaseException as e:
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# If the device was removed it has the same effect...
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self.print_error("clear_session: ignoring error", str(e))
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pass
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def close(self):
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'''Called when Our wallet was closed or the device removed.'''
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self.print_error("disconnected")
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self.clear_session()
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# Release the device
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self.transport.close()
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def firmware_version(self):
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f = self.features
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return (f.major_version, f.minor_version, f.patch_version)
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def atleast_version(self, major, minor=0, patch=0):
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return cmp(self.firmware_version(), (major, minor, patch))
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@staticmethod
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def wrapper(func):
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'''Wrap base class methods to show exceptions and clear
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any dialog box it opened.'''
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def wrapped(self, *args, **kwargs):
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try:
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return func(self, *args, **kwargs)
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except BaseException as e:
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self.handler.show_error(str(e))
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raise e
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finally:
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self.handler.finished()
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return wrapped
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@staticmethod
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def wrap_methods(cls):
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for method in ['apply_settings', 'change_pin', 'decrypt_message',
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'get_address', 'get_public_node',
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'load_device_by_mnemonic', 'load_device_by_xprv',
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'recovery_device', 'reset_device', 'sign_message',
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'sign_tx', 'wipe_device']:
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setattr(cls, method, cls.wrapper(getattr(cls, method)))
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