Ejemplo n.º 1
0
 def get_max_amount(self):
     inputs = self.wallet.get_spendable_coins(None, self.electrum_config)
     addr = str(self.send_screen.screen.address) or self.wallet.dummy_address()
     outputs = [(TYPE_ADDRESS, addr, '!')]
     tx = self.wallet.make_unsigned_transaction(inputs, outputs, self.electrum_config)
     amount = tx.output_value()
     return format_satoshis_plain(amount, self.decimal_point())
Ejemplo n.º 2
0
 def fiat_to_btc(self, fiat_amount):
     if not fiat_amount:
         return ''
     rate = run_hook('exchange_rate')
     if not rate:
         return ''
     satoshis = int(pow(10,8) * Decimal(fiat_amount) / Decimal(rate))
     return format_satoshis_plain(satoshis, self.decimal_point())
Ejemplo n.º 3
0
 def fiat_to_btc(self, fiat_amount):
     if not fiat_amount:
         return ''
     rate = self.fx.exchange_rate()
     if rate.is_nan():
         return ''
     satoshis = int(pow(10,8) * Decimal(fiat_amount) / Decimal(rate))
     return format_satoshis_plain(satoshis, self.decimal_point())
Ejemplo n.º 4
0
 def get_max_amount(self):
     if run_hook('abort_send', self):
         return ''
     inputs = self.wallet.get_spendable_coins(None, self.electrum_config)
     if not inputs:
         return ''
     addr = str(self.send_screen.screen.address) or self.wallet.dummy_address()
     outputs = [(TYPE_ADDRESS, addr, '!')]
     try:
         tx = self.wallet.make_unsigned_transaction(inputs, outputs, self.electrum_config)
     except NoDynamicFeeEstimates as e:
         Clock.schedule_once(lambda dt, bound_e=e: self.show_error(str(bound_e)))
         return ''
     amount = tx.output_value()
     __, x_fee_amount = run_hook('get_tx_extra_fee', self.wallet, tx) or (None, 0)
     amount_after_all_fees = amount - x_fee_amount
     return format_satoshis_plain(amount_after_all_fees, self.decimal_point())
Ejemplo n.º 5
0
    def sign_transaction(self, tx, password):
        if tx.is_complete():
            return
        #if tx.error:
        #    raise BaseException(tx.error)
        self.signing = True
        inputs = []
        inputsPaths = []
        pubKeys = []
        trustedInputs = []
        redeemScripts = []
        signatures = []
        preparedTrustedInputs = []
        changePath = ""
        changeAmount = None
        output = None
        outputAmount = None
        use2FA = False
        pin = ""
        rawTx = tx.serialize()
        # Fetch inputs of the transaction to sign
        for txinput in tx.inputs:
            if ('is_coinbase' in txinput and txinput['is_coinbase']):
                self.give_error("Coinbase not supported")     # should never happen
            inputs.append([ self.transactions[txinput['prevout_hash']].raw,
                             txinput['prevout_n'] ])
            address = txinput['address']
            inputsPaths.append(self.address_id(address))
            pubKeys.append(self.get_public_keys(address))

        # Recognize outputs - only one output and one change is authorized
        if len(tx.outputs) > 2: # should never happen
            self.give_error("Transaction with more than 2 outputs not supported")
        for type, address, amount in tx.outputs:
            assert type == 'address'
            if self.is_change(address):
                changePath = self.address_id(address)
                changeAmount = amount
            else:
                if output <> None: # should never happen
                    self.give_error("Multiple outputs with no change not supported")
                output = address
                outputAmount = amount

        self.get_client() # prompt for the PIN before displaying the dialog if necessary
        if not self.check_proper_device():
            self.give_error('Wrong device or password')

        self.plugin.handler.show_message("Signing Transaction ...")
        try:
            # Get trusted inputs from the original transactions
            for utxo in inputs:
                txtmp = bitcoinTransaction(bytearray(utxo[0].decode('hex')))
                trustedInputs.append(self.get_client().getTrustedInput(txtmp, utxo[1]))
                # TODO : Support P2SH later
                redeemScripts.append(txtmp.outputs[utxo[1]].script)
            # Sign all inputs
            firstTransaction = True
            inputIndex = 0
            while inputIndex < len(inputs):
                self.get_client().startUntrustedTransaction(firstTransaction, inputIndex,
                trustedInputs, redeemScripts[inputIndex])
                outputData = self.get_client().finalizeInput(output, format_satoshis_plain(outputAmount),
                format_satoshis_plain(self.get_tx_fee(tx)), changePath, bytearray(rawTx.decode('hex')))
                if firstTransaction:
                    transactionOutput = outputData['outputData']
                if outputData['confirmationNeeded']:
                    # TODO : handle different confirmation types. For the time being only supports keyboard 2FA
                    self.plugin.handler.stop()
                    if 'keycardData' in outputData:
                        pin2 = ""
                        for keycardIndex in range(len(outputData['keycardData'])):
                            msg = "Do not enter your device PIN here !\r\n\r\n" + \
                                "Your Ledger Wallet wants to talk to you and tell you a unique second factor code.\r\n" + \
                                "For this to work, please match the character between stars of the output address using your security card\r\n\r\n" + \
                                "Output address : "
                            for index in range(len(output)):
                                if index == outputData['keycardData'][keycardIndex]:
                                    msg = msg + "*" + output[index] + "*"
                                else:
                                    msg = msg + output[index]
                            msg = msg + "\r\n"
                            confirmed, p, pin = self.password_dialog(msg)
                            if not confirmed:
                                raise Exception('Aborted by user')
                            try:
                                pin2 = pin2 + chr(int(pin[0], 16))
                            except:
                                raise Exception('Invalid PIN character')
                        pin = pin2
                    else:
                        use2FA = True
                        confirmed, p, pin = self.password_dialog()
                        if not confirmed:
                            raise Exception('Aborted by user')
                        pin = pin.encode()
                        self.client.bad = True
                        self.device_checked = False
                        self.get_client(True)
                    self.plugin.handler.show_message("Signing ...")
                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
                firstTransaction = False
        except Exception, e:
            self.give_error(e, True)
Ejemplo n.º 6
0
 def setAmount(self, amount):
     if amount is None:
         self.setText(" ") # Space forces repaint in case units changed
     else:
         self.setText(format_satoshis_plain(amount, self.decimal_point()))
Ejemplo n.º 7
0
 def get_max_amount(self):
     inputs = self.wallet.get_spendable_coins(None)
     addr = str(self.send_screen.screen.address) or self.wallet.dummy_address()
     amount, fee = self.wallet.get_max_amount(self.electrum_config, inputs, addr, None)
     return format_satoshis_plain(amount, self.decimal_point())
Ejemplo n.º 8
0
 def setAmount(self, amount):
     if amount is None:
         self.setText("")
     else:
         self.setText(format_satoshis_plain(amount, self.decimal_point()))
Ejemplo n.º 9
0
 def get_max_amount(self):
     inputs = self.wallet.get_spendable_coins(None)
     amount, fee = self.wallet.get_max_amount(self.electrum_config, inputs, None)
     return format_satoshis_plain(amount, self.decimal_point())
Ejemplo n.º 10
0
 def setAmount(self, amount):
     if amount is None:
         self.setText(" ") # Space forces repaint in case units changed
     else:
         self.setText(format_satoshis_plain(amount, self.decimal_point()))
Ejemplo n.º 11
0
    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 len(tx.outputs()) > 2:  # should never happen
                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()
            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']:
                    # TODO : handle different confirmation types. For the time being only supports keyboard 2FA
                    self.handler.clear_dialog()
                    if 'keycardData' in outputData:
                        pin2 = ""
                        for keycardIndex in range(
                                len(outputData['keycardData'])):
                            msg = "Do not enter your device PIN here !\r\n\r\n" + \
                                "Your Ledger Wallet wants to talk to you and tell you a unique second factor code.\r\n" + \
                                "For this to work, please match the character between stars of the output address using your security card\r\n\r\n" + \
                                "Output address : "
                            for index in range(len(output)):
                                if index == outputData['keycardData'][
                                        keycardIndex]:
                                    msg = msg + "*" + output[index] + "*"
                                else:
                                    msg = msg + output[index]
                            msg = msg + "\r\n"
                            confirmed, p, pin = self.password_dialog(msg)
                            if not confirmed:
                                raise Exception('Aborted by user')
                            try:
                                pin2 = pin2 + chr(int(pin[0], 16))
                            except:
                                raise Exception('Invalid PIN character')
                        pin = pin2
                    else:
                        confirmed, p, pin = self.password_dialog()
                        if not confirmed:
                            raise Exception('Aborted by user')
                        pin = pin.encode()
                        #self.plugin.get_client(self, True, True)
                    self.handler.show_message("Signing ...")
                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
                firstTransaction = False
        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
Ejemplo n.º 12
0
    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 txin['type'] in ['p2sh']:
                p2shTransaction = True

            pubkeys, x_pubkeys = tx.get_sorted_pubkeys(txin)
            for i, x_pubkey in enumerate(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(pubkeys)

        # Sanity check
        if p2shTransaction:
            for txin in tx.inputs():
                if txin['type'] != 'p2sh':
                    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) and (len(tx.outputs()) != 1):
                    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
Ejemplo n.º 13
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 def get_max_amount(self):
     inputs = self.wallet.get_spendable_coins(None)
     amount, fee = self.wallet.get_max_amount(self.electrum_config, inputs,
                                              None)
     return format_satoshis_plain(amount, self.decimal_point())
Ejemplo n.º 14
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 def test_format_satoshis_plain_to_mbtc(self):
     self.assertEqual("0.01234", format_satoshis_plain(1234,
                                                       decimal_point=5))
Ejemplo n.º 15
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 def test_format_satoshis_plain_decimal(self):
     self.assertEqual("0.00001234", format_satoshis_plain(Decimal(1234)))
Ejemplo n.º 16
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 def setAmount(self, amount):
     if amount is None:
         self.setText("")
     else:
         self.setText(format_satoshis_plain(amount, self.decimal_point()))
Ejemplo n.º 17
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 def get_max_amount(self):
     inputs = self.wallet.get_spendable_coins(None)
     addr = str(self.send_screen.screen.address) or self.wallet.dummy_address()
     amount, fee = self.wallet.get_max_amount(self.electrum_config, inputs, addr, None)
     return format_satoshis_plain(amount, self.decimal_point())
Ejemplo n.º 18
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 def format_amount_and_units(self, x):
     return format_satoshis_plain(
         x, self.decimal_point()) + ' ' + self.base_unit
 def setAmount(self, amount_sat):
     if amount_sat is None:
         self.setText(" ")  # Space forces repaint in case units changed
     else:
         self.setText(format_satoshis_plain(amount_sat, decimal_point=self.decimal_point()))
     self.repaint()  # macOS hack for #6269
Ejemplo n.º 20
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    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['type'] == 'coinbase':
                self.give_error(
                    "Coinbase not supported")  # should never happen

            if txin['type'] in ['p2sh']:
                p2shTransaction = True

            pubkeys, x_pubkeys = tx.get_sorted_pubkeys(txin)
            for i, x_pubkey in enumerate(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(pubkeys)

        # Sanity check
        if p2shTransaction:
            for txin in tx.inputs():
                if txin['type'] != 'p2sh':
                    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) and (len(tx.outputs()) != 1):
                    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
Ejemplo n.º 21
0
 def formatPlain_(self, amount: ObjCInstance) -> ObjCInstance:
     amount = int(amount)
     return ns_from_py(format_satoshis_plain(amount, self.decimalPoint()))
Ejemplo n.º 22
0
 def format_amount_and_units(self, x):
     return format_satoshis_plain(x, self.decimal_point()) + ' ' + self.base_unit
Ejemplo n.º 23
0
    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 len(tx.outputs()) > 2: # should never happen
                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()
            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']:
                    # TODO : handle different confirmation types. For the time being only supports keyboard 2FA
                    self.handler.clear_dialog()
                    if 'keycardData' in outputData:
                        pin2 = ""
                        for keycardIndex in range(len(outputData['keycardData'])):
                            msg = "Do not enter your device PIN here !\r\n\r\n" + \
                                "Your Ledger Wallet wants to talk to you and tell you a unique second factor code.\r\n" + \
                                "For this to work, please match the character between stars of the output address using your security card\r\n\r\n" + \
                                "Output address : "
                            for index in range(len(output)):
                                if index == outputData['keycardData'][keycardIndex]:
                                    msg = msg + "*" + output[index] + "*"
                                else:
                                    msg = msg + output[index]
                            msg = msg + "\r\n"
                            confirmed, p, pin = self.password_dialog(msg)
                            if not confirmed:
                                raise Exception('Aborted by user')
                            try:
                                pin2 = pin2 + chr(int(pin[0], 16))
                            except:
                                raise Exception('Invalid PIN character')
                        pin = pin2
                    else:
                        confirmed, p, pin = self.password_dialog()
                        if not confirmed:
                            raise Exception('Aborted by user')
                        pin = pin.encode()
                        #self.plugin.get_client(self, True, True)
                    self.handler.show_message("Signing ...")
                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
                firstTransaction = False
        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