480 lines
19 KiB
Python
480 lines
19 KiB
Python
from binascii import hexlify
|
|
from struct import pack, unpack
|
|
import hashlib
|
|
import time
|
|
import sys
|
|
import traceback
|
|
|
|
import electrum
|
|
from electrum import bitcoin
|
|
from electrum.bitcoin import TYPE_ADDRESS, int_to_hex, var_int
|
|
from electrum.i18n import _
|
|
from electrum.plugins import BasePlugin, hook
|
|
from electrum.keystore import Hardware_KeyStore, parse_xpubkey
|
|
from ..hw_wallet import HW_PluginBase
|
|
from electrum.util import format_satoshis_plain, print_error, is_verbose
|
|
|
|
try:
|
|
import hid
|
|
from btchip.btchipComm import HIDDongleHIDAPI, DongleWait
|
|
from btchip.btchip import btchip
|
|
from btchip.btchipUtils import compress_public_key,format_transaction, get_regular_input_script, get_p2sh_input_script
|
|
from btchip.bitcoinTransaction import bitcoinTransaction
|
|
from btchip.btchipFirmwareWizard import checkFirmware, updateFirmware
|
|
from btchip.btchipException import BTChipException
|
|
BTCHIP = True
|
|
BTCHIP_DEBUG = is_verbose
|
|
except ImportError:
|
|
BTCHIP = False
|
|
|
|
class Ledger_Client():
|
|
def __init__(self, hidDevice):
|
|
self.dongleObject = btchip(hidDevice)
|
|
self.preflightDone = False
|
|
|
|
def is_pairable(self):
|
|
return True
|
|
|
|
def close(self):
|
|
self.dongleObject.dongle.close()
|
|
|
|
def timeout(self, cutoff):
|
|
pass
|
|
|
|
def is_initialized(self):
|
|
return True
|
|
|
|
def label(self):
|
|
return ""
|
|
|
|
def i4b(self, x):
|
|
return pack('>I', x)
|
|
|
|
def get_xpub(self, bip32_path):
|
|
self.checkDevice()
|
|
# bip32_path is of the form 44'/0'/1'
|
|
# S-L-O-W - we don't handle the fingerprint directly, so compute
|
|
# it manually from the previous node
|
|
# This only happens once so it's bearable
|
|
#self.get_client() # prompt for the PIN before displaying the dialog if necessary
|
|
#self.handler.show_message("Computing master public key")
|
|
try:
|
|
splitPath = bip32_path.split('/')
|
|
if splitPath[0] == 'm':
|
|
splitPath = splitPath[1:]
|
|
bip32_path = bip32_path[2:]
|
|
fingerprint = 0
|
|
if len(splitPath) > 1:
|
|
prevPath = "/".join(splitPath[0:len(splitPath) - 1])
|
|
nodeData = self.dongleObject.getWalletPublicKey(prevPath)
|
|
publicKey = compress_public_key(nodeData['publicKey'])
|
|
h = hashlib.new('ripemd160')
|
|
h.update(hashlib.sha256(publicKey).digest())
|
|
fingerprint = unpack(">I", h.digest()[0:4])[0]
|
|
nodeData = self.dongleObject.getWalletPublicKey(bip32_path)
|
|
publicKey = compress_public_key(nodeData['publicKey'])
|
|
depth = len(splitPath)
|
|
lastChild = splitPath[len(splitPath) - 1].split('\'')
|
|
if len(lastChild) == 1:
|
|
childnum = int(lastChild[0])
|
|
else:
|
|
childnum = 0x80000000 | int(lastChild[0])
|
|
xpub = bitcoin.serialize_xpub(0, str(nodeData['chainCode']), str(publicKey), depth, self.i4b(fingerprint), self.i4b(childnum))
|
|
return xpub
|
|
except Exception as e:
|
|
print_error(e)
|
|
return None
|
|
|
|
def has_detached_pin_support(self, client):
|
|
try:
|
|
client.getVerifyPinRemainingAttempts()
|
|
return True
|
|
except BTChipException, e:
|
|
if e.sw == 0x6d00:
|
|
return False
|
|
raise e
|
|
|
|
def is_pin_validated(self, client):
|
|
try:
|
|
# Invalid SET OPERATION MODE to verify the PIN status
|
|
client.dongle.exchange(bytearray([0xe0, 0x26, 0x00, 0x00, 0x01, 0xAB]))
|
|
except BTChipException, e:
|
|
if (e.sw == 0x6982):
|
|
return False
|
|
if (e.sw == 0x6A80):
|
|
return True
|
|
raise e
|
|
|
|
def supports_multi_output(self):
|
|
return self.multiOutputSupported
|
|
|
|
def perform_hw1_preflight(self):
|
|
try:
|
|
firmware = self.dongleObject.getFirmwareVersion()['version'].split(".")
|
|
self.multiOutputSupported = int(firmware[0]) >= 1 and int(firmware[1]) >= 1 and int(firmware[2]) >= 4
|
|
if not checkFirmware(firmware):
|
|
self.dongleObject.dongle.close()
|
|
raise Exception("HW1 firmware version too old. Please update at https://www.ledgerwallet.com")
|
|
try:
|
|
self.dongleObject.getOperationMode()
|
|
except BTChipException, e:
|
|
if (e.sw == 0x6985):
|
|
self.dongleObject.dongle.close()
|
|
self.handler.get_setup( )
|
|
# Acquire the new client on the next run
|
|
else:
|
|
raise e
|
|
if self.has_detached_pin_support(self.dongleObject) and not self.is_pin_validated(self.dongleObject) and (self.handler <> None):
|
|
remaining_attempts = self.dongleObject.getVerifyPinRemainingAttempts()
|
|
if remaining_attempts <> 1:
|
|
msg = "Enter your Ledger PIN - remaining attempts : " + str(remaining_attempts)
|
|
else:
|
|
msg = "Enter your Ledger PIN - WARNING : LAST ATTEMPT. If the PIN is not correct, the dongle will be wiped."
|
|
confirmed, p, pin = self.password_dialog(msg)
|
|
if not confirmed:
|
|
raise Exception('Aborted by user - please unplug the dongle and plug it again before retrying')
|
|
pin = pin.encode()
|
|
self.dongleObject.verifyPin(pin)
|
|
except BTChipException, e:
|
|
if (e.sw == 0x6faa):
|
|
raise Exception("Dongle is temporarily locked - please unplug it and replug it again")
|
|
if ((e.sw & 0xFFF0) == 0x63c0):
|
|
raise Exception("Invalid PIN - please unplug the dongle and plug it again before retrying")
|
|
raise e
|
|
|
|
def checkDevice(self):
|
|
if not self.preflightDone:
|
|
try:
|
|
self.perform_hw1_preflight()
|
|
except BTChipException as e:
|
|
if (e.sw == 0x6d00):
|
|
raise BaseException("Device not in Bitcoin mode")
|
|
raise e
|
|
self.preflightDone = True
|
|
|
|
def password_dialog(self, msg=None):
|
|
response = self.handler.get_word(msg)
|
|
if response is None:
|
|
return False, None, None
|
|
return True, response, response
|
|
|
|
|
|
class Ledger_KeyStore(Hardware_KeyStore):
|
|
hw_type = 'ledger'
|
|
device = 'Ledger'
|
|
|
|
def __init__(self, d):
|
|
Hardware_KeyStore.__init__(self, d)
|
|
# Errors and other user interaction is done through the wallet's
|
|
# handler. The handler is per-window and preserved across
|
|
# device reconnects
|
|
self.force_watching_only = False
|
|
self.signing = False
|
|
self.cfg = d.get('cfg', {'mode':0,'pair':''})
|
|
|
|
def dump(self):
|
|
obj = Hardware_KeyStore.dump(self)
|
|
obj['cfg'] = self.cfg
|
|
return obj
|
|
|
|
def get_derivation(self):
|
|
return self.derivation
|
|
|
|
def get_client(self):
|
|
return self.plugin.get_client(self).dongleObject
|
|
|
|
def get_client_electrum(self):
|
|
return self.plugin.get_client(self)
|
|
|
|
def give_error(self, message, clear_client = False):
|
|
print_error(message)
|
|
if not self.signing:
|
|
self.handler.show_error(message)
|
|
else:
|
|
self.signing = False
|
|
if clear_client:
|
|
self.client = None
|
|
raise Exception(message)
|
|
|
|
def address_id_stripped(self, address):
|
|
# Strip the leading "m/"
|
|
change, index = self.get_address_index(address)
|
|
derivation = self.derivation
|
|
address_path = "%s/%d/%d"%(derivation, change, index)
|
|
return address_path[2:]
|
|
|
|
def decrypt_message(self, pubkey, message, password):
|
|
raise RuntimeError(_('Encryption and decryption are currently not supported for %s') % self.device)
|
|
|
|
def sign_message(self, sequence, message, password):
|
|
self.signing = True
|
|
# prompt for the PIN before displaying the dialog if necessary
|
|
client = self.get_client()
|
|
address_path = self.get_derivation()[2:] + "/%d/%d"%sequence
|
|
self.handler.show_message("Signing message ...")
|
|
try:
|
|
info = self.get_client().signMessagePrepare(address_path, message)
|
|
pin = ""
|
|
if info['confirmationNeeded']:
|
|
pin = self.handler.get_auth( info ) # does the authenticate dialog and returns pin
|
|
if not pin:
|
|
raise UserWarning(_('Cancelled by user'))
|
|
pin = str(pin).encode()
|
|
signature = self.get_client().signMessageSign(pin)
|
|
except BTChipException, e:
|
|
if e.sw == 0x6a80:
|
|
self.give_error("Unfortunately, this message cannot be signed by the Ledger wallet. Only alphanumerical messages shorter than 140 characters are supported. Please remove any extra characters (tab, carriage return) and retry.")
|
|
else:
|
|
self.give_error(e, True)
|
|
except UserWarning:
|
|
self.handler.show_error(_('Cancelled by user'))
|
|
return ''
|
|
except Exception, e:
|
|
self.give_error(e, True)
|
|
finally:
|
|
self.handler.clear_dialog()
|
|
self.signing = False
|
|
|
|
# Parse the ASN.1 signature
|
|
|
|
rLength = signature[3]
|
|
r = signature[4 : 4 + rLength]
|
|
sLength = signature[4 + rLength + 1]
|
|
s = signature[4 + rLength + 2:]
|
|
if rLength == 33:
|
|
r = r[1:]
|
|
if sLength == 33:
|
|
s = s[1:]
|
|
r = str(r)
|
|
s = str(s)
|
|
|
|
# And convert it
|
|
return chr(27 + 4 + (signature[0] & 0x01)) + r + s
|
|
|
|
def sign_transaction(self, tx, password):
|
|
if tx.is_complete():
|
|
return
|
|
client = self.get_client()
|
|
self.signing = True
|
|
inputs = []
|
|
inputsPaths = []
|
|
pubKeys = []
|
|
chipInputs = []
|
|
redeemScripts = []
|
|
signatures = []
|
|
preparedTrustedInputs = []
|
|
changePath = ""
|
|
changeAmount = None
|
|
output = None
|
|
outputAmount = None
|
|
p2shTransaction = False
|
|
reorganize = False
|
|
pin = ""
|
|
self.get_client() # prompt for the PIN before displaying the dialog if necessary
|
|
|
|
# Fetch inputs of the transaction to sign
|
|
derivations = self.get_tx_derivations(tx)
|
|
for txin in tx.inputs():
|
|
if txin.get('is_coinbase'):
|
|
self.give_error("Coinbase not supported") # should never happen
|
|
|
|
if len(txin['pubkeys']) > 1:
|
|
p2shTransaction = True
|
|
|
|
for i, x_pubkey in enumerate(txin['x_pubkeys']):
|
|
if x_pubkey in derivations:
|
|
signingPos = i
|
|
s = derivations.get(x_pubkey)
|
|
hwAddress = "%s/%d/%d" % (self.get_derivation()[2:], s[0], s[1])
|
|
break
|
|
else:
|
|
self.give_error("No matching x_key for sign_transaction") # should never happen
|
|
|
|
inputs.append([txin['prev_tx'].raw, txin['prevout_n'], txin.get('redeemScript'), txin['prevout_hash'], signingPos ])
|
|
inputsPaths.append(hwAddress)
|
|
pubKeys.append(txin['pubkeys'])
|
|
|
|
# Sanity check
|
|
if p2shTransaction:
|
|
for txinput in tx.inputs():
|
|
if len(txinput['pubkeys']) < 2:
|
|
self.give_error("P2SH / regular input mixed in same transaction not supported") # should never happen
|
|
|
|
txOutput = var_int(len(tx.outputs()))
|
|
for txout in tx.outputs():
|
|
output_type, addr, amount = txout
|
|
txOutput += int_to_hex(amount, 8)
|
|
script = tx.pay_script(output_type, addr)
|
|
txOutput += var_int(len(script)/2)
|
|
txOutput += script
|
|
txOutput = txOutput.decode('hex')
|
|
|
|
# Recognize outputs - only one output and one change is authorized
|
|
if not p2shTransaction:
|
|
if not self.get_client_electrum().supports_multi_output():
|
|
if len(tx.outputs()) > 2:
|
|
self.give_error("Transaction with more than 2 outputs not supported")
|
|
for _type, address, amount in tx.outputs():
|
|
assert _type == TYPE_ADDRESS
|
|
info = tx.output_info.get(address)
|
|
if info is not None:
|
|
index, xpubs, m = info
|
|
changePath = self.get_derivation()[2:] + "/%d/%d"%index
|
|
changeAmount = amount
|
|
else:
|
|
output = address
|
|
outputAmount = amount
|
|
|
|
self.handler.show_message(_("Confirm Transaction on your Ledger device..."))
|
|
try:
|
|
# Get trusted inputs from the original transactions
|
|
for utxo in inputs:
|
|
if not p2shTransaction:
|
|
txtmp = bitcoinTransaction(bytearray(utxo[0].decode('hex')))
|
|
chipInputs.append(self.get_client().getTrustedInput(txtmp, utxo[1]))
|
|
redeemScripts.append(txtmp.outputs[utxo[1]].script)
|
|
else:
|
|
tmp = utxo[3].decode('hex')[::-1].encode('hex')
|
|
tmp += int_to_hex(utxo[1], 4)
|
|
chipInputs.append({'value' : tmp.decode('hex')})
|
|
redeemScripts.append(bytearray(utxo[2].decode('hex')))
|
|
|
|
# Sign all inputs
|
|
firstTransaction = True
|
|
inputIndex = 0
|
|
rawTx = tx.serialize()
|
|
self.get_client().enableAlternate2fa(False)
|
|
while inputIndex < len(inputs):
|
|
self.get_client().startUntrustedTransaction(firstTransaction, inputIndex,
|
|
chipInputs, redeemScripts[inputIndex])
|
|
if not p2shTransaction:
|
|
outputData = self.get_client().finalizeInput(output, format_satoshis_plain(outputAmount),
|
|
format_satoshis_plain(tx.get_fee()), changePath, bytearray(rawTx.decode('hex')))
|
|
reorganize = True
|
|
else:
|
|
outputData = self.get_client().finalizeInputFull(txOutput)
|
|
outputData['outputData'] = txOutput
|
|
|
|
if firstTransaction:
|
|
transactionOutput = outputData['outputData']
|
|
if outputData['confirmationNeeded']:
|
|
outputData['address'] = output
|
|
self.handler.clear_dialog()
|
|
pin = self.handler.get_auth( outputData ) # does the authenticate dialog and returns pin
|
|
if not pin:
|
|
raise UserWarning()
|
|
if pin != 'paired':
|
|
self.handler.show_message(_("Confirmed. Signing Transaction..."))
|
|
else:
|
|
# Sign input with the provided PIN
|
|
inputSignature = self.get_client().untrustedHashSign(inputsPaths[inputIndex], pin)
|
|
inputSignature[0] = 0x30 # force for 1.4.9+
|
|
signatures.append(inputSignature)
|
|
inputIndex = inputIndex + 1
|
|
if pin != 'paired':
|
|
firstTransaction = False
|
|
except UserWarning:
|
|
self.handler.show_error(_('Cancelled by user'))
|
|
return
|
|
except BaseException as e:
|
|
traceback.print_exc(file=sys.stdout)
|
|
self.give_error(e, True)
|
|
finally:
|
|
self.handler.clear_dialog()
|
|
|
|
# Reformat transaction
|
|
inputIndex = 0
|
|
while inputIndex < len(inputs):
|
|
if p2shTransaction:
|
|
signaturesPack = [signatures[inputIndex]] * len(pubKeys[inputIndex])
|
|
inputScript = get_p2sh_input_script(redeemScripts[inputIndex], signaturesPack)
|
|
preparedTrustedInputs.append([ ("\x00" * 4) + chipInputs[inputIndex]['value'], inputScript ])
|
|
else:
|
|
inputScript = get_regular_input_script(signatures[inputIndex], pubKeys[inputIndex][0].decode('hex'))
|
|
preparedTrustedInputs.append([ chipInputs[inputIndex]['value'], inputScript ])
|
|
inputIndex = inputIndex + 1
|
|
updatedTransaction = format_transaction(transactionOutput, preparedTrustedInputs)
|
|
updatedTransaction = hexlify(updatedTransaction)
|
|
|
|
if reorganize:
|
|
tx.update(updatedTransaction)
|
|
else:
|
|
tx.update_signatures(updatedTransaction)
|
|
self.signing = False
|
|
|
|
|
|
class LedgerPlugin(HW_PluginBase):
|
|
libraries_available = BTCHIP
|
|
keystore_class = Ledger_KeyStore
|
|
client = None
|
|
DEVICE_IDS = [
|
|
(0x2581, 0x1807), # HW.1 legacy btchip
|
|
(0x2581, 0x2b7c), # HW.1 transitional production
|
|
(0x2581, 0x3b7c), # HW.1 ledger production
|
|
(0x2581, 0x4b7c), # HW.1 ledger test
|
|
(0x2c97, 0x0000), # Blue
|
|
(0x2c97, 0x0001) # Nano-S
|
|
]
|
|
|
|
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 btchip_is_connected(self, keystore):
|
|
try:
|
|
self.get_client(keystore).getFirmwareVersion()
|
|
except Exception as e:
|
|
return False
|
|
return True
|
|
|
|
def get_btchip_device(self, device):
|
|
ledger = False
|
|
if (device.product_key[0] == 0x2581 and device.product_key[1] == 0x3b7c) or (device.product_key[0] == 0x2581 and device.product_key[1] == 0x4b7c) or (device.product_key[0] == 0x2c97):
|
|
ledger = True
|
|
dev = hid.device()
|
|
dev.open_path(device.path)
|
|
dev.set_nonblocking(True)
|
|
return HIDDongleHIDAPI(dev, ledger, BTCHIP_DEBUG)
|
|
|
|
def create_client(self, device, handler):
|
|
self.handler = handler
|
|
|
|
client = self.get_btchip_device(device)
|
|
if client <> None:
|
|
client = Ledger_Client(client)
|
|
return client
|
|
|
|
def setup_device(self, device_info, wizard):
|
|
devmgr = self.device_manager()
|
|
device_id = device_info.device.id_
|
|
client = devmgr.client_by_id(device_id)
|
|
#client.handler = wizard
|
|
client.handler = self.create_handler(wizard)
|
|
#client.get_xpub('m')
|
|
client.get_xpub("m/44'/0'") # TODO replace by direct derivation once Nano S > 1.1
|
|
|
|
def get_xpub(self, device_id, derivation, wizard):
|
|
devmgr = self.device_manager()
|
|
client = devmgr.client_by_id(device_id)
|
|
#client.handler = wizard
|
|
client.handler = self.create_handler(wizard)
|
|
client.checkDevice()
|
|
xpub = client.get_xpub(derivation)
|
|
return xpub
|
|
|
|
def get_client(self, keystore, force_pair=True):
|
|
# All client interaction should not be in the main GUI thread
|
|
#assert self.main_thread != threading.current_thread()
|
|
devmgr = self.device_manager()
|
|
handler = keystore.handler
|
|
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()
|
|
if client <> None:
|
|
client.checkDevice()
|
|
return client
|