URI: 
       tkeepkey: merge plugin.py into keepkey.py - electrum - Electrum Bitcoin wallet
  HTML git clone https://git.parazyd.org/electrum
   DIR Log
   DIR Files
   DIR Refs
   DIR Submodules
       ---
   DIR commit e36f67aabcc87f2b0cc22705c7fbd69e69551df4
   DIR parent 66cfc3ea37ab9252056e4cd49b6219a9f7986c79
  HTML Author: SomberNight <somber.night@protonmail.com>
       Date:   Tue,  1 May 2018 15:35:01 +0200
       
       keepkey: merge plugin.py into keepkey.py
       
       (remnants of separating trezor and keepkey)
       
       Diffstat:
         M plugins/keepkey/keepkey.py          |     421 ++++++++++++++++++++++++++++++-
         D plugins/keepkey/plugin.py           |     419 -------------------------------
         M plugins/keepkey/qt_generic.py       |       2 +-
       
       3 files changed, 417 insertions(+), 425 deletions(-)
       ---
   DIR diff --git a/plugins/keepkey/keepkey.py b/plugins/keepkey/keepkey.py
       t@@ -1,18 +1,89 @@
       -from .plugin import KeepKeyCompatiblePlugin, KeepKeyCompatibleKeyStore
       +from binascii import hexlify, unhexlify
       +import traceback
       +import sys
        
       +from electrum.util import bfh, bh2u
       +from electrum.bitcoin import (b58_address_to_hash160, xpub_from_pubkey,
       +                              TYPE_ADDRESS, TYPE_SCRIPT,
       +                              is_segwit_address)
       +from electrum import constants
       +from electrum.i18n import _
       +from electrum.plugins import BasePlugin
       +from electrum.transaction import deserialize, Transaction
       +from electrum.keystore import Hardware_KeyStore, is_xpubkey, parse_xpubkey
       +from electrum.wallet import Standard_Wallet
       +from electrum.base_wizard import ScriptTypeNotSupported
        
       -class KeepKey_KeyStore(KeepKeyCompatibleKeyStore):
       +from ..hw_wallet import HW_PluginBase
       +
       +
       +# TREZOR initialization methods
       +TIM_NEW, TIM_RECOVER, TIM_MNEMONIC, TIM_PRIVKEY = range(0, 4)
       +
       +
       +class KeepKey_KeyStore(Hardware_KeyStore):
            hw_type = 'keepkey'
            device = 'KeepKey'
        
       +    def get_derivation(self):
       +        return self.derivation
       +
       +    def is_segwit(self):
       +        return self.derivation.startswith("m/49'/")
       +
       +    def get_client(self, force_pair=True):
       +        return self.plugin.get_client(self, force_pair)
       +
       +    def decrypt_message(self, sequence, message, password):
       +        raise RuntimeError(_('Encryption and decryption are not implemented by {}').format(self.device))
       +
       +    def sign_message(self, sequence, message, password):
       +        client = self.get_client()
       +        address_path = self.get_derivation() + "/%d/%d"%sequence
       +        address_n = client.expand_path(address_path)
       +        msg_sig = client.sign_message(self.plugin.get_coin_name(), address_n, message)
       +        return msg_sig.signature
       +
       +    def sign_transaction(self, tx, password):
       +        if tx.is_complete():
       +            return
       +        # previous transactions used as inputs
       +        prev_tx = {}
       +        # path of the xpubs that are involved
       +        xpub_path = {}
       +        for txin in tx.inputs():
       +            pubkeys, x_pubkeys = tx.get_sorted_pubkeys(txin)
       +            tx_hash = txin['prevout_hash']
       +            if txin.get('prev_tx') is None and not Transaction.is_segwit_input(txin):
       +                raise Exception(_('Offline signing with {} is not supported for legacy inputs.').format(self.device))
       +            prev_tx[tx_hash] = txin['prev_tx']
       +            for x_pubkey in x_pubkeys:
       +                if not is_xpubkey(x_pubkey):
       +                    continue
       +                xpub, s = parse_xpubkey(x_pubkey)
       +                if xpub == self.get_master_public_key():
       +                    xpub_path[xpub] = self.get_derivation()
       +
       +        self.plugin.sign_transaction(self, tx, prev_tx, xpub_path)
       +
       +
       +class KeepKeyPlugin(HW_PluginBase):
       +    # Derived classes provide:
       +    #
       +    #  class-static variables: client_class, firmware_URL, handler_class,
       +    #     libraries_available, libraries_URL, minimum_firmware,
       +    #     wallet_class, ckd_public, types, HidTransport
        
       -class KeepKeyPlugin(KeepKeyCompatiblePlugin):
            firmware_URL = 'https://www.keepkey.com'
            libraries_URL = 'https://github.com/keepkey/python-keepkey'
            minimum_firmware = (1, 0, 0)
            keystore_class = KeepKey_KeyStore
        
       -    def __init__(self, *args):
       +    MAX_LABEL_LEN = 32
       +
       +    def __init__(self, parent, config, name):
       +        HW_PluginBase.__init__(self, parent, config, name)
       +
                try:
                    from . import client
                    import keepkeylib
       t@@ -22,10 +93,10 @@ class KeepKeyPlugin(KeepKeyCompatiblePlugin):
                    self.ckd_public = keepkeylib.ckd_public
                    self.types = keepkeylib.client.types
                    self.DEVICE_IDS = keepkeylib.transport_hid.DEVICE_IDS
       +            self.device_manager().register_devices(self.DEVICE_IDS)
                    self.libraries_available = True
                except ImportError:
                    self.libraries_available = False
       -        KeepKeyCompatiblePlugin.__init__(self, *args)
        
            def hid_transport(self, pair):
                from keepkeylib.transport_hid import HidTransport
       t@@ -33,3 +104,343 @@ class KeepKeyPlugin(KeepKeyCompatiblePlugin):
        
            def bridge_transport(self, d):
                raise NotImplementedError('')
       +
       +    def _try_hid(self, device):
       +        self.print_error("Trying to connect over USB...")
       +        if device.interface_number == 1:
       +            pair = [None, device.path]
       +        else:
       +            pair = [device.path, None]
       +
       +        try:
       +            return self.hid_transport(pair)
       +        except BaseException as e:
       +            # see fdb810ba622dc7dbe1259cbafb5b28e19d2ab114
       +            # raise
       +            self.print_error("cannot connect at", device.path, str(e))
       +            return None
       +
       +    def _try_bridge(self, device):
       +        self.print_error("Trying to connect over Trezor Bridge...")
       +        try:
       +            return self.bridge_transport({'path': hexlify(device.path)})
       +        except BaseException as e:
       +            self.print_error("cannot connect to bridge", str(e))
       +            return None
       +
       +    def create_client(self, device, handler):
       +        # disable bridge because it seems to never returns if KeepKey is plugged
       +        #transport = self._try_bridge(device) or self._try_hid(device)
       +        transport = self._try_hid(device)
       +        if not transport:
       +            self.print_error("cannot connect to device")
       +            return
       +
       +        self.print_error("connected to device at", device.path)
       +
       +        client = self.client_class(transport, handler, self)
       +
       +        # Try a ping for device sanity
       +        try:
       +            client.ping('t')
       +        except BaseException as e:
       +            self.print_error("ping failed", str(e))
       +            return None
       +
       +        if not client.atleast_version(*self.minimum_firmware):
       +            msg = (_('Outdated {} firmware for device labelled {}. Please '
       +                     'download the updated firmware from {}')
       +                   .format(self.device, client.label(), self.firmware_URL))
       +            self.print_error(msg)
       +            handler.show_error(msg)
       +            return None
       +
       +        return client
       +
       +    def get_client(self, keystore, force_pair=True):
       +        devmgr = self.device_manager()
       +        handler = keystore.handler
       +        with devmgr.hid_lock:
       +            client = devmgr.client_for_keystore(self, handler, keystore, force_pair)
       +        # returns the client for a given keystore. can use xpub
       +        if client:
       +            client.used()
       +        return client
       +
       +    def get_coin_name(self):
       +        return "Testnet" if constants.net.TESTNET else "Bitcoin"
       +
       +    def initialize_device(self, device_id, wizard, handler):
       +        # Initialization method
       +        msg = _("Choose how you want to initialize your {}.\n\n"
       +                "The first two methods are secure as no secret information "
       +                "is entered into your computer.\n\n"
       +                "For the last two methods you input secrets on your keyboard "
       +                "and upload them to your {}, and so you should "
       +                "only do those on a computer you know to be trustworthy "
       +                "and free of malware."
       +        ).format(self.device, self.device)
       +        choices = [
       +            # Must be short as QT doesn't word-wrap radio button text
       +            (TIM_NEW, _("Let the device generate a completely new seed randomly")),
       +            (TIM_RECOVER, _("Recover from a seed you have previously written down")),
       +            (TIM_MNEMONIC, _("Upload a BIP39 mnemonic to generate the seed")),
       +            (TIM_PRIVKEY, _("Upload a master private key"))
       +        ]
       +        def f(method):
       +            import threading
       +            settings = self.request_trezor_init_settings(wizard, method, self.device)
       +            t = threading.Thread(target=self._initialize_device_safe, args=(settings, method, device_id, wizard, handler))
       +            t.setDaemon(True)
       +            t.start()
       +            wizard.loop.exec_()
       +        wizard.choice_dialog(title=_('Initialize Device'), message=msg, choices=choices, run_next=f)
       +
       +    def _initialize_device_safe(self, settings, method, device_id, wizard, handler):
       +        try:
       +            self._initialize_device(settings, method, device_id, wizard, handler)
       +        except BaseException as e:
       +            traceback.print_exc(file=sys.stderr)
       +            handler.show_error(str(e))
       +        finally:
       +            wizard.loop.exit(0)
       +
       +    def _initialize_device(self, settings, method, device_id, wizard, handler):
       +        item, label, pin_protection, passphrase_protection = settings
       +
       +        language = 'english'
       +        devmgr = self.device_manager()
       +        client = devmgr.client_by_id(device_id)
       +
       +        if method == TIM_NEW:
       +            strength = 64 * (item + 2)  # 128, 192 or 256
       +            client.reset_device(True, strength, passphrase_protection,
       +                                pin_protection, label, language)
       +        elif method == TIM_RECOVER:
       +            word_count = 6 * (item + 2)  # 12, 18 or 24
       +            client.step = 0
       +            client.recovery_device(word_count, passphrase_protection,
       +                                       pin_protection, label, language)
       +        elif method == TIM_MNEMONIC:
       +            pin = pin_protection  # It's the pin, not a boolean
       +            client.load_device_by_mnemonic(str(item), pin,
       +                                           passphrase_protection,
       +                                           label, language)
       +        else:
       +            pin = pin_protection  # It's the pin, not a boolean
       +            client.load_device_by_xprv(item, pin, passphrase_protection,
       +                                       label, language)
       +
       +    def setup_device(self, device_info, wizard, purpose):
       +        devmgr = self.device_manager()
       +        device_id = device_info.device.id_
       +        client = devmgr.client_by_id(device_id)
       +        # fixme: we should use: client.handler = wizard
       +        client.handler = self.create_handler(wizard)
       +        if not device_info.initialized:
       +            self.initialize_device(device_id, wizard, client.handler)
       +        client.get_xpub('m', 'standard')
       +        client.used()
       +
       +    def get_xpub(self, device_id, derivation, xtype, wizard):
       +        if xtype not in ('standard',):
       +            raise ScriptTypeNotSupported(_('This type of script is not supported with KeepKey.'))
       +        devmgr = self.device_manager()
       +        client = devmgr.client_by_id(device_id)
       +        client.handler = wizard
       +        xpub = client.get_xpub(derivation, xtype)
       +        client.used()
       +        return xpub
       +
       +    def sign_transaction(self, keystore, tx, prev_tx, xpub_path):
       +        self.prev_tx = prev_tx
       +        self.xpub_path = xpub_path
       +        client = self.get_client(keystore)
       +        inputs = self.tx_inputs(tx, True, keystore.is_segwit())
       +        outputs = self.tx_outputs(keystore.get_derivation(), tx, keystore.is_segwit())
       +        signed_tx = client.sign_tx(self.get_coin_name(), inputs, outputs, lock_time=tx.locktime)[1]
       +        raw = bh2u(signed_tx)
       +        tx.update_signatures(raw)
       +
       +    def show_address(self, wallet, address, keystore=None):
       +        if keystore is None:
       +            keystore = wallet.get_keystore()
       +        if not self.show_address_helper(wallet, address, keystore):
       +            return
       +        if type(wallet) is not Standard_Wallet:
       +            keystore.handler.show_error(_('This function is only available for standard wallets when using {}.').format(self.device))
       +            return
       +        client = self.get_client(wallet.keystore)
       +        if not client.atleast_version(1, 3):
       +            wallet.keystore.handler.show_error(_("Your device firmware is too old"))
       +            return
       +        change, index = wallet.get_address_index(address)
       +        derivation = wallet.keystore.derivation
       +        address_path = "%s/%d/%d"%(derivation, change, index)
       +        address_n = client.expand_path(address_path)
       +        segwit = wallet.keystore.is_segwit()
       +        script_type = self.types.SPENDP2SHWITNESS if segwit else self.types.SPENDADDRESS
       +        client.get_address(self.get_coin_name(), address_n, True, script_type=script_type)
       +
       +    def tx_inputs(self, tx, for_sig=False, segwit=False):
       +        inputs = []
       +        for txin in tx.inputs():
       +            txinputtype = self.types.TxInputType()
       +            if txin['type'] == 'coinbase':
       +                prev_hash = "\0"*32
       +                prev_index = 0xffffffff  # signed int -1
       +            else:
       +                if for_sig:
       +                    x_pubkeys = txin['x_pubkeys']
       +                    if len(x_pubkeys) == 1:
       +                        x_pubkey = x_pubkeys[0]
       +                        xpub, s = parse_xpubkey(x_pubkey)
       +                        xpub_n = self.client_class.expand_path(self.xpub_path[xpub])
       +                        txinputtype.address_n.extend(xpub_n + s)
       +                        txinputtype.script_type = self.types.SPENDP2SHWITNESS if segwit else self.types.SPENDADDRESS
       +                    else:
       +                        def f(x_pubkey):
       +                            if is_xpubkey(x_pubkey):
       +                                xpub, s = parse_xpubkey(x_pubkey)
       +                            else:
       +                                xpub = xpub_from_pubkey(0, bfh(x_pubkey))
       +                                s = []
       +                            node = self.ckd_public.deserialize(xpub)
       +                            return self.types.HDNodePathType(node=node, address_n=s)
       +                        pubkeys = map(f, x_pubkeys)
       +                        multisig = self.types.MultisigRedeemScriptType(
       +                            pubkeys=pubkeys,
       +                            signatures=map(lambda x: bfh(x)[:-1] if x else b'', txin.get('signatures')),
       +                            m=txin.get('num_sig'),
       +                        )
       +                        script_type = self.types.SPENDP2SHWITNESS if segwit else self.types.SPENDMULTISIG
       +                        txinputtype = self.types.TxInputType(
       +                            script_type=script_type,
       +                            multisig=multisig
       +                        )
       +                        # find which key is mine
       +                        for x_pubkey in x_pubkeys:
       +                            if is_xpubkey(x_pubkey):
       +                                xpub, s = parse_xpubkey(x_pubkey)
       +                                if xpub in self.xpub_path:
       +                                    xpub_n = self.client_class.expand_path(self.xpub_path[xpub])
       +                                    txinputtype.address_n.extend(xpub_n + s)
       +                                    break
       +
       +                prev_hash = unhexlify(txin['prevout_hash'])
       +                prev_index = txin['prevout_n']
       +
       +            if 'value' in txin:
       +                txinputtype.amount = txin['value']
       +            txinputtype.prev_hash = prev_hash
       +            txinputtype.prev_index = prev_index
       +
       +            if 'scriptSig' in txin:
       +                script_sig = bfh(txin['scriptSig'])
       +                txinputtype.script_sig = script_sig
       +
       +            txinputtype.sequence = txin.get('sequence', 0xffffffff - 1)
       +
       +            inputs.append(txinputtype)
       +
       +        return inputs
       +
       +    def tx_outputs(self, derivation, tx, segwit=False):
       +
       +        def create_output_by_derivation(info):
       +            index, xpubs, m = info
       +            if len(xpubs) == 1:
       +                script_type = self.types.PAYTOP2SHWITNESS if segwit else self.types.PAYTOADDRESS
       +                address_n = self.client_class.expand_path(derivation + "/%d/%d" % index)
       +                txoutputtype = self.types.TxOutputType(
       +                    amount=amount,
       +                    script_type=script_type,
       +                    address_n=address_n,
       +                )
       +            else:
       +                script_type = self.types.PAYTOP2SHWITNESS if segwit else self.types.PAYTOMULTISIG
       +                address_n = self.client_class.expand_path("/%d/%d" % index)
       +                nodes = map(self.ckd_public.deserialize, xpubs)
       +                pubkeys = [self.types.HDNodePathType(node=node, address_n=address_n) for node in nodes]
       +                multisig = self.types.MultisigRedeemScriptType(
       +                    pubkeys=pubkeys,
       +                    signatures=[b''] * len(pubkeys),
       +                    m=m)
       +                txoutputtype = self.types.TxOutputType(
       +                    multisig=multisig,
       +                    amount=amount,
       +                    address_n=self.client_class.expand_path(derivation + "/%d/%d" % index),
       +                    script_type=script_type)
       +            return txoutputtype
       +
       +        def create_output_by_address():
       +            txoutputtype = self.types.TxOutputType()
       +            txoutputtype.amount = amount
       +            if _type == TYPE_SCRIPT:
       +                txoutputtype.script_type = self.types.PAYTOOPRETURN
       +                txoutputtype.op_return_data = address[2:]
       +            elif _type == TYPE_ADDRESS:
       +                if is_segwit_address(address):
       +                    txoutputtype.script_type = self.types.PAYTOWITNESS
       +                else:
       +                    addrtype, hash_160 = b58_address_to_hash160(address)
       +                    if addrtype == constants.net.ADDRTYPE_P2PKH:
       +                        txoutputtype.script_type = self.types.PAYTOADDRESS
       +                    elif addrtype == constants.net.ADDRTYPE_P2SH:
       +                        txoutputtype.script_type = self.types.PAYTOSCRIPTHASH
       +                    else:
       +                        raise Exception('addrtype: ' + str(addrtype))
       +                txoutputtype.address = address
       +            return txoutputtype
       +
       +        def is_any_output_on_change_branch():
       +            for _type, address, amount in tx.outputs():
       +                info = tx.output_info.get(address)
       +                if info is not None:
       +                    index, xpubs, m = info
       +                    if index[0] == 1:
       +                        return True
       +            return False
       +
       +        outputs = []
       +        has_change = False
       +        any_output_on_change_branch = is_any_output_on_change_branch()
       +
       +        for _type, address, amount in tx.outputs():
       +            use_create_by_derivation = False
       +
       +            info = tx.output_info.get(address)
       +            if info is not None and not has_change:
       +                index, xpubs, m = info
       +                on_change_branch = index[0] == 1
       +                # prioritise hiding outputs on the 'change' branch from user
       +                # because no more than one change address allowed
       +                if on_change_branch == any_output_on_change_branch:
       +                    use_create_by_derivation = True
       +                    has_change = True
       +
       +            if use_create_by_derivation:
       +                txoutputtype = create_output_by_derivation(info)
       +            else:
       +                txoutputtype = create_output_by_address()
       +            outputs.append(txoutputtype)
       +
       +        return outputs
       +
       +    def electrum_tx_to_txtype(self, tx):
       +        t = self.types.TransactionType()
       +        d = deserialize(tx.raw)
       +        t.version = d['version']
       +        t.lock_time = d['lockTime']
       +        inputs = self.tx_inputs(tx)
       +        t.inputs.extend(inputs)
       +        for vout in d['outputs']:
       +            o = t.bin_outputs.add()
       +            o.amount = vout['value']
       +            o.script_pubkey = bfh(vout['scriptPubKey'])
       +        return t
       +
       +    # This function is called from the TREZOR libraries (via tx_api)
       +    def get_tx(self, tx_hash):
       +        tx = self.prev_tx[tx_hash]
       +        return self.electrum_tx_to_txtype(tx)
   DIR diff --git a/plugins/keepkey/plugin.py b/plugins/keepkey/plugin.py
       t@@ -1,419 +0,0 @@
       -from binascii import hexlify, unhexlify
       -import traceback
       -import sys
       -
       -from electrum.util import bfh, bh2u
       -from electrum.bitcoin import (b58_address_to_hash160, xpub_from_pubkey,
       -                              TYPE_ADDRESS, TYPE_SCRIPT,
       -                              is_segwit_address)
       -from electrum import constants
       -from electrum.i18n import _
       -from electrum.plugins import BasePlugin
       -from electrum.transaction import deserialize, Transaction
       -from electrum.keystore import Hardware_KeyStore, is_xpubkey, parse_xpubkey
       -from electrum.wallet import Standard_Wallet
       -from electrum.base_wizard import ScriptTypeNotSupported
       -
       -from ..hw_wallet import HW_PluginBase
       -
       -
       -# TREZOR initialization methods
       -TIM_NEW, TIM_RECOVER, TIM_MNEMONIC, TIM_PRIVKEY = range(0, 4)
       -
       -class KeepKeyCompatibleKeyStore(Hardware_KeyStore):
       -
       -    def get_derivation(self):
       -        return self.derivation
       -
       -    def is_segwit(self):
       -        return self.derivation.startswith("m/49'/")
       -
       -    def get_client(self, force_pair=True):
       -        return self.plugin.get_client(self, force_pair)
       -
       -    def decrypt_message(self, sequence, message, password):
       -        raise RuntimeError(_('Encryption and decryption are not implemented by {}').format(self.device))
       -
       -    def sign_message(self, sequence, message, password):
       -        client = self.get_client()
       -        address_path = self.get_derivation() + "/%d/%d"%sequence
       -        address_n = client.expand_path(address_path)
       -        msg_sig = client.sign_message(self.plugin.get_coin_name(), address_n, message)
       -        return msg_sig.signature
       -
       -    def sign_transaction(self, tx, password):
       -        if tx.is_complete():
       -            return
       -        # previous transactions used as inputs
       -        prev_tx = {}
       -        # path of the xpubs that are involved
       -        xpub_path = {}
       -        for txin in tx.inputs():
       -            pubkeys, x_pubkeys = tx.get_sorted_pubkeys(txin)
       -            tx_hash = txin['prevout_hash']
       -            if txin.get('prev_tx') is None and not Transaction.is_segwit_input(txin):
       -                raise Exception(_('Offline signing with {} is not supported for legacy inputs.').format(self.device))
       -            prev_tx[tx_hash] = txin['prev_tx']
       -            for x_pubkey in x_pubkeys:
       -                if not is_xpubkey(x_pubkey):
       -                    continue
       -                xpub, s = parse_xpubkey(x_pubkey)
       -                if xpub == self.get_master_public_key():
       -                    xpub_path[xpub] = self.get_derivation()
       -
       -        self.plugin.sign_transaction(self, tx, prev_tx, xpub_path)
       -
       -
       -class KeepKeyCompatiblePlugin(HW_PluginBase):
       -    # Derived classes provide:
       -    #
       -    #  class-static variables: client_class, firmware_URL, handler_class,
       -    #     libraries_available, libraries_URL, minimum_firmware,
       -    #     wallet_class, ckd_public, types, HidTransport
       -
       -    MAX_LABEL_LEN = 32
       -
       -    def __init__(self, parent, config, name):
       -        HW_PluginBase.__init__(self, parent, config, name)
       -        if self.libraries_available:
       -            self.device_manager().register_devices(self.DEVICE_IDS)
       -
       -    def _try_hid(self, device):
       -        self.print_error("Trying to connect over USB...")
       -        if device.interface_number == 1:
       -            pair = [None, device.path]
       -        else:
       -            pair = [device.path, None]
       -
       -        try:
       -            return self.hid_transport(pair)
       -        except BaseException as e:
       -            # see fdb810ba622dc7dbe1259cbafb5b28e19d2ab114
       -            # raise
       -            self.print_error("cannot connect at", device.path, str(e))
       -            return None
       -
       -    def _try_bridge(self, device):
       -        self.print_error("Trying to connect over Trezor Bridge...")
       -        try:
       -            return self.bridge_transport({'path': hexlify(device.path)})
       -        except BaseException as e:
       -            self.print_error("cannot connect to bridge", str(e))
       -            return None
       -
       -    def create_client(self, device, handler):
       -        # disable bridge because it seems to never returns if KeepKey is plugged
       -        #transport = self._try_bridge(device) or self._try_hid(device)
       -        transport = self._try_hid(device)
       -        if not transport:
       -            self.print_error("cannot connect to device")
       -            return
       -
       -        self.print_error("connected to device at", device.path)
       -
       -        client = self.client_class(transport, handler, self)
       -
       -        # Try a ping for device sanity
       -        try:
       -            client.ping('t')
       -        except BaseException as e:
       -            self.print_error("ping failed", str(e))
       -            return None
       -
       -        if not client.atleast_version(*self.minimum_firmware):
       -            msg = (_('Outdated {} firmware for device labelled {}. Please '
       -                     'download the updated firmware from {}')
       -                   .format(self.device, client.label(), self.firmware_URL))
       -            self.print_error(msg)
       -            handler.show_error(msg)
       -            return None
       -
       -        return client
       -
       -    def get_client(self, keystore, force_pair=True):
       -        devmgr = self.device_manager()
       -        handler = keystore.handler
       -        with devmgr.hid_lock:
       -            client = devmgr.client_for_keystore(self, handler, keystore, force_pair)
       -        # returns the client for a given keystore. can use xpub
       -        if client:
       -            client.used()
       -        return client
       -
       -    def get_coin_name(self):
       -        return "Testnet" if constants.net.TESTNET else "Bitcoin"
       -
       -    def initialize_device(self, device_id, wizard, handler):
       -        # Initialization method
       -        msg = _("Choose how you want to initialize your {}.\n\n"
       -                "The first two methods are secure as no secret information "
       -                "is entered into your computer.\n\n"
       -                "For the last two methods you input secrets on your keyboard "
       -                "and upload them to your {}, and so you should "
       -                "only do those on a computer you know to be trustworthy "
       -                "and free of malware."
       -        ).format(self.device, self.device)
       -        choices = [
       -            # Must be short as QT doesn't word-wrap radio button text
       -            (TIM_NEW, _("Let the device generate a completely new seed randomly")),
       -            (TIM_RECOVER, _("Recover from a seed you have previously written down")),
       -            (TIM_MNEMONIC, _("Upload a BIP39 mnemonic to generate the seed")),
       -            (TIM_PRIVKEY, _("Upload a master private key"))
       -        ]
       -        def f(method):
       -            import threading
       -            settings = self.request_trezor_init_settings(wizard, method, self.device)
       -            t = threading.Thread(target=self._initialize_device_safe, args=(settings, method, device_id, wizard, handler))
       -            t.setDaemon(True)
       -            t.start()
       -            wizard.loop.exec_()
       -        wizard.choice_dialog(title=_('Initialize Device'), message=msg, choices=choices, run_next=f)
       -
       -    def _initialize_device_safe(self, settings, method, device_id, wizard, handler):
       -        try:
       -            self._initialize_device(settings, method, device_id, wizard, handler)
       -        except BaseException as e:
       -            traceback.print_exc(file=sys.stderr)
       -            handler.show_error(str(e))
       -        finally:
       -            wizard.loop.exit(0)
       -
       -    def _initialize_device(self, settings, method, device_id, wizard, handler):
       -        item, label, pin_protection, passphrase_protection = settings
       -
       -        language = 'english'
       -        devmgr = self.device_manager()
       -        client = devmgr.client_by_id(device_id)
       -
       -        if method == TIM_NEW:
       -            strength = 64 * (item + 2)  # 128, 192 or 256
       -            client.reset_device(True, strength, passphrase_protection,
       -                                pin_protection, label, language)
       -        elif method == TIM_RECOVER:
       -            word_count = 6 * (item + 2)  # 12, 18 or 24
       -            client.step = 0
       -            client.recovery_device(word_count, passphrase_protection,
       -                                       pin_protection, label, language)
       -        elif method == TIM_MNEMONIC:
       -            pin = pin_protection  # It's the pin, not a boolean
       -            client.load_device_by_mnemonic(str(item), pin,
       -                                           passphrase_protection,
       -                                           label, language)
       -        else:
       -            pin = pin_protection  # It's the pin, not a boolean
       -            client.load_device_by_xprv(item, pin, passphrase_protection,
       -                                       label, language)
       -
       -    def setup_device(self, device_info, wizard, purpose):
       -        devmgr = self.device_manager()
       -        device_id = device_info.device.id_
       -        client = devmgr.client_by_id(device_id)
       -        # fixme: we should use: client.handler = wizard
       -        client.handler = self.create_handler(wizard)
       -        if not device_info.initialized:
       -            self.initialize_device(device_id, wizard, client.handler)
       -        client.get_xpub('m', 'standard')
       -        client.used()
       -
       -    def get_xpub(self, device_id, derivation, xtype, wizard):
       -        if xtype not in ('standard',):
       -            raise ScriptTypeNotSupported(_('This type of script is not supported with KeepKey.'))
       -        devmgr = self.device_manager()
       -        client = devmgr.client_by_id(device_id)
       -        client.handler = wizard
       -        xpub = client.get_xpub(derivation, xtype)
       -        client.used()
       -        return xpub
       -
       -    def sign_transaction(self, keystore, tx, prev_tx, xpub_path):
       -        self.prev_tx = prev_tx
       -        self.xpub_path = xpub_path
       -        client = self.get_client(keystore)
       -        inputs = self.tx_inputs(tx, True, keystore.is_segwit())
       -        outputs = self.tx_outputs(keystore.get_derivation(), tx, keystore.is_segwit())
       -        signed_tx = client.sign_tx(self.get_coin_name(), inputs, outputs, lock_time=tx.locktime)[1]
       -        raw = bh2u(signed_tx)
       -        tx.update_signatures(raw)
       -
       -    def show_address(self, wallet, address, keystore=None):
       -        if keystore is None:
       -            keystore = wallet.get_keystore()
       -        if not self.show_address_helper(wallet, address, keystore):
       -            return
       -        if type(wallet) is not Standard_Wallet:
       -            keystore.handler.show_error(_('This function is only available for standard wallets when using {}.').format(self.device))
       -            return
       -        client = self.get_client(wallet.keystore)
       -        if not client.atleast_version(1, 3):
       -            wallet.keystore.handler.show_error(_("Your device firmware is too old"))
       -            return
       -        change, index = wallet.get_address_index(address)
       -        derivation = wallet.keystore.derivation
       -        address_path = "%s/%d/%d"%(derivation, change, index)
       -        address_n = client.expand_path(address_path)
       -        segwit = wallet.keystore.is_segwit()
       -        script_type = self.types.SPENDP2SHWITNESS if segwit else self.types.SPENDADDRESS
       -        client.get_address(self.get_coin_name(), address_n, True, script_type=script_type)
       -
       -    def tx_inputs(self, tx, for_sig=False, segwit=False):
       -        inputs = []
       -        for txin in tx.inputs():
       -            txinputtype = self.types.TxInputType()
       -            if txin['type'] == 'coinbase':
       -                prev_hash = "\0"*32
       -                prev_index = 0xffffffff  # signed int -1
       -            else:
       -                if for_sig:
       -                    x_pubkeys = txin['x_pubkeys']
       -                    if len(x_pubkeys) == 1:
       -                        x_pubkey = x_pubkeys[0]
       -                        xpub, s = parse_xpubkey(x_pubkey)
       -                        xpub_n = self.client_class.expand_path(self.xpub_path[xpub])
       -                        txinputtype.address_n.extend(xpub_n + s)
       -                        txinputtype.script_type = self.types.SPENDP2SHWITNESS if segwit else self.types.SPENDADDRESS
       -                    else:
       -                        def f(x_pubkey):
       -                            if is_xpubkey(x_pubkey):
       -                                xpub, s = parse_xpubkey(x_pubkey)
       -                            else:
       -                                xpub = xpub_from_pubkey(0, bfh(x_pubkey))
       -                                s = []
       -                            node = self.ckd_public.deserialize(xpub)
       -                            return self.types.HDNodePathType(node=node, address_n=s)
       -                        pubkeys = map(f, x_pubkeys)
       -                        multisig = self.types.MultisigRedeemScriptType(
       -                            pubkeys=pubkeys,
       -                            signatures=map(lambda x: bfh(x)[:-1] if x else b'', txin.get('signatures')),
       -                            m=txin.get('num_sig'),
       -                        )
       -                        script_type = self.types.SPENDP2SHWITNESS if segwit else self.types.SPENDMULTISIG
       -                        txinputtype = self.types.TxInputType(
       -                            script_type=script_type,
       -                            multisig=multisig
       -                        )
       -                        # find which key is mine
       -                        for x_pubkey in x_pubkeys:
       -                            if is_xpubkey(x_pubkey):
       -                                xpub, s = parse_xpubkey(x_pubkey)
       -                                if xpub in self.xpub_path:
       -                                    xpub_n = self.client_class.expand_path(self.xpub_path[xpub])
       -                                    txinputtype.address_n.extend(xpub_n + s)
       -                                    break
       -
       -                prev_hash = unhexlify(txin['prevout_hash'])
       -                prev_index = txin['prevout_n']
       -
       -            if 'value' in txin:
       -                txinputtype.amount = txin['value']
       -            txinputtype.prev_hash = prev_hash
       -            txinputtype.prev_index = prev_index
       -
       -            if 'scriptSig' in txin:
       -                script_sig = bfh(txin['scriptSig'])
       -                txinputtype.script_sig = script_sig
       -
       -            txinputtype.sequence = txin.get('sequence', 0xffffffff - 1)
       -
       -            inputs.append(txinputtype)
       -
       -        return inputs
       -
       -    def tx_outputs(self, derivation, tx, segwit=False):
       -
       -        def create_output_by_derivation(info):
       -            index, xpubs, m = info
       -            if len(xpubs) == 1:
       -                script_type = self.types.PAYTOP2SHWITNESS if segwit else self.types.PAYTOADDRESS
       -                address_n = self.client_class.expand_path(derivation + "/%d/%d" % index)
       -                txoutputtype = self.types.TxOutputType(
       -                    amount=amount,
       -                    script_type=script_type,
       -                    address_n=address_n,
       -                )
       -            else:
       -                script_type = self.types.PAYTOP2SHWITNESS if segwit else self.types.PAYTOMULTISIG
       -                address_n = self.client_class.expand_path("/%d/%d" % index)
       -                nodes = map(self.ckd_public.deserialize, xpubs)
       -                pubkeys = [self.types.HDNodePathType(node=node, address_n=address_n) for node in nodes]
       -                multisig = self.types.MultisigRedeemScriptType(
       -                    pubkeys=pubkeys,
       -                    signatures=[b''] * len(pubkeys),
       -                    m=m)
       -                txoutputtype = self.types.TxOutputType(
       -                    multisig=multisig,
       -                    amount=amount,
       -                    address_n=self.client_class.expand_path(derivation + "/%d/%d" % index),
       -                    script_type=script_type)
       -            return txoutputtype
       -
       -        def create_output_by_address():
       -            txoutputtype = self.types.TxOutputType()
       -            txoutputtype.amount = amount
       -            if _type == TYPE_SCRIPT:
       -                txoutputtype.script_type = self.types.PAYTOOPRETURN
       -                txoutputtype.op_return_data = address[2:]
       -            elif _type == TYPE_ADDRESS:
       -                if is_segwit_address(address):
       -                    txoutputtype.script_type = self.types.PAYTOWITNESS
       -                else:
       -                    addrtype, hash_160 = b58_address_to_hash160(address)
       -                    if addrtype == constants.net.ADDRTYPE_P2PKH:
       -                        txoutputtype.script_type = self.types.PAYTOADDRESS
       -                    elif addrtype == constants.net.ADDRTYPE_P2SH:
       -                        txoutputtype.script_type = self.types.PAYTOSCRIPTHASH
       -                    else:
       -                        raise Exception('addrtype: ' + str(addrtype))
       -                txoutputtype.address = address
       -            return txoutputtype
       -
       -        def is_any_output_on_change_branch():
       -            for _type, address, amount in tx.outputs():
       -                info = tx.output_info.get(address)
       -                if info is not None:
       -                    index, xpubs, m = info
       -                    if index[0] == 1:
       -                        return True
       -            return False
       -
       -        outputs = []
       -        has_change = False
       -        any_output_on_change_branch = is_any_output_on_change_branch()
       -
       -        for _type, address, amount in tx.outputs():
       -            use_create_by_derivation = False
       -
       -            info = tx.output_info.get(address)
       -            if info is not None and not has_change:
       -                index, xpubs, m = info
       -                on_change_branch = index[0] == 1
       -                # prioritise hiding outputs on the 'change' branch from user
       -                # because no more than one change address allowed
       -                if on_change_branch == any_output_on_change_branch:
       -                    use_create_by_derivation = True
       -                    has_change = True
       -
       -            if use_create_by_derivation:
       -                txoutputtype = create_output_by_derivation(info)
       -            else:
       -                txoutputtype = create_output_by_address()
       -            outputs.append(txoutputtype)
       -
       -        return outputs
       -
       -    def electrum_tx_to_txtype(self, tx):
       -        t = self.types.TransactionType()
       -        d = deserialize(tx.raw)
       -        t.version = d['version']
       -        t.lock_time = d['lockTime']
       -        inputs = self.tx_inputs(tx)
       -        t.inputs.extend(inputs)
       -        for vout in d['outputs']:
       -            o = t.bin_outputs.add()
       -            o.amount = vout['value']
       -            o.script_pubkey = bfh(vout['scriptPubKey'])
       -        return t
       -
       -    # This function is called from the TREZOR libraries (via tx_api)
       -    def get_tx(self, tx_hash):
       -        tx = self.prev_tx[tx_hash]
       -        return self.electrum_tx_to_txtype(tx)
   DIR diff --git a/plugins/keepkey/qt_generic.py b/plugins/keepkey/qt_generic.py
       t@@ -5,7 +5,7 @@ from PyQt5.Qt import Qt
        from PyQt5.Qt import QGridLayout, QInputDialog, QPushButton
        from PyQt5.Qt import QVBoxLayout, QLabel
        from electrum_gui.qt.util import *
       -from .plugin import TIM_NEW, TIM_RECOVER, TIM_MNEMONIC
       +from .keepkey import TIM_NEW, TIM_RECOVER, TIM_MNEMONIC
        from ..hw_wallet.qt import QtHandlerBase, QtPluginBase
        
        from electrum.i18n import _