def update(features):
self.features = features
set_label_enabled()
bl_hash = bh2u(features.bootloader_hash)
bl_hash = "\n".join([bl_hash[:32], bl_hash[32:]])
noyes = [_("No"), _("Yes")]
endis = [_("Enable Passphrases"), _("Disable Passphrases")]
disen = [_("Disabled"), _("Enabled")]
setchange = [_("Set a PIN"), _("Change PIN")]
version = "%d.%d.%d" % (features.major_version,
features.minor_version,
features.patch_version)
coins = ", ".join(coin.coin_name for coin in features.coins)
device_label.setText(features.label)
pin_set_label.setText(noyes[features.pin_protection])
passphrases_label.setText(disen[features.passphrase_protection])
bl_hash_label.setText(bl_hash)
label_edit.setText(features.label)
device_id_label.setText(features.device_id)
initialized_label.setText(noyes[features.initialized])
version_label.setText(version)
coins_label.setText(coins)
clear_pin_button.setVisible(features.pin_protection)
clear_pin_warning.setVisible(features.pin_protection)
pin_button.setText(setchange[features.pin_protection])
pin_msg.setVisible(not features.pin_protection)
passphrase_button.setText(endis[features.passphrase_protection])
language_label.setText(features.language)
def update(self, window: 'ElectrumWindow'):
wallet = window.wallet
if type(wallet) != Multisig_Wallet:
return
assert isinstance(wallet, Multisig_Wallet) # only here for type-hints in IDE
if self.listener is None:
self.logger.info("starting listener")
self.listener = Listener(self)
self.listener.start()
elif self.listener:
self.logger.info("shutting down listener")
self.listener.stop()
self.listener = None
self.keys = []
self.cosigner_list = []
for key, keystore in wallet.keystores.items():
xpub = keystore.get_master_public_key() # type: str
pubkey = BIP32Node.from_xkey(xpub).eckey.get_public_key_bytes(compressed=True)
_hash = bh2u(crypto.sha256d(pubkey))
if not keystore.is_watching_only():
self.keys.append((key, _hash, window))
else:
self.cosigner_list.append((window, xpub, pubkey, _hash))
if self.listener:
self.listener.set_keyhashes([t[1] for t in self.keys])
def test_mnemonic_to_seed_basic(self):
# note: not a valid actilectrum seed
seed = mnemonic.Mnemonic.mnemonic_to_seed(mnemonic='foobar',
passphrase='none')
self.assertEqual(
'741b72fd15effece6bfe5a26a52184f66811bd2be363190e07a42cca442b1a5bb22b3ad0eb338197287e6d314866c7fba863ac65d3f156087a5052ebc7157fce',
bh2u(seed))
def format_fields(self, chan):
labels = {}
for subject in (REMOTE, LOCAL):
bal_minus_htlcs = chan.balance_minus_outgoing_htlcs(
subject) // 1000
label = self.parent.format_amount(bal_minus_htlcs)
other = subject.inverted()
bal_other = chan.balance(other) // 1000
bal_minus_htlcs_other = chan.balance_minus_outgoing_htlcs(
other) // 1000
if bal_other != bal_minus_htlcs_other:
label += ' (+' + self.parent.format_amount(
bal_other - bal_minus_htlcs_other) + ')'
labels[subject] = label
status = chan.get_state_for_GUI()
closed = chan.is_closed()
if self.parent.network.is_lightning_running():
node_info = self.lnworker.channel_db.get_node_info_for_node_id(
chan.node_id)
node_alias = (node_info.alias if node_info else '') or ''
else:
node_alias = ''
return [
chan.short_id_for_GUI(),
bh2u(chan.node_id), node_alias, '' if closed else labels[LOCAL],
'' if closed else labels[REMOTE], status
]
def gen_random_versioned_seed(cls):
version = cls.LATEST_VERSION
hex_seed = bh2u(os.urandom(16))
checksum = cls.code_hashid(version + hex_seed)
return VersionedSeed(version=version.upper(),
seed=hex_seed.upper(),
checksum=checksum.upper())
def test_mnemonic_to_seed(self):
for test_name, test in SEED_TEST_CASES.items():
if test.words_hex is not None:
self.assertEqual(test.words_hex,
bh2u(test.words.encode('utf8')),
msg=test_name)
self.assertTrue(is_new_seed(test.words, prefix=test.seed_version),
msg=test_name)
m = mnemonic.Mnemonic(lang=test.lang)
if test.entropy is not None:
self.assertEqual(test.entropy,
m.mnemonic_decode(test.words),
msg=test_name)
if test.passphrase_hex is not None:
self.assertEqual(test.passphrase_hex,
bh2u(test.passphrase.encode('utf8')),
msg=test_name)
seed = mnemonic.Mnemonic.mnemonic_to_seed(
mnemonic=test.words, passphrase=test.passphrase)
self.assertEqual(test.bip32_seed, bh2u(seed), msg=test_name)
def open(self, *args, **kwargs):
super(LightningOpenChannelDialog, self).open(*args, **kwargs)
if self.lnaddr:
fee = self.app.electrum_config.fee_per_kb()
if not fee:
fee = config.FEERATE_FALLBACK_STATIC_FEE
self.amount = self.app.format_amount_and_units(self.lnaddr.amount *
COIN + fee * 2)
self.pubkey = bh2u(self.lnaddr.pubkey.serialize())
if self.msg:
self.app.show_info(self.msg)
def sign_transaction(self, keystore, tx: PartialTransaction, prev_tx):
self.prev_tx = prev_tx
client = self.get_client(keystore)
inputs = self.tx_inputs(tx, for_sig=True, keystore=keystore)
outputs = self.tx_outputs(tx, keystore=keystore)
signatures = client.sign_tx(self.get_coin_name(),
inputs,
outputs,
lock_time=tx.locktime,
version=tx.version)[0]
signatures = [(bh2u(x) + '01') for x in signatures]
tx.update_signatures(signatures)
def make_htlc_item(self, i: UpdateAddHtlc,
direction: Direction) -> HTLCItem:
it = HTLCItem(
_('Sent HTLC with ID {}' if Direction.SENT ==
direction else 'Received HTLC with ID {}').format(i.htlc_id))
it.appendRow(
[HTLCItem(_('Amount')),
HTLCItem(self.format_msat(i.amount_msat))])
it.appendRow(
[HTLCItem(_('CLTV expiry')),
HTLCItem(str(i.cltv_expiry))])
it.appendRow(
[HTLCItem(_('Payment hash')),
HTLCItem(bh2u(i.payment_hash))])
return it
def sign_transaction(self, keystore, tx: PartialTransaction, prev_tx):
prev_tx = {
bfh(txhash): self.electrum_tx_to_txtype(tx)
for txhash, tx in prev_tx.items()
}
client = self.get_client(keystore)
inputs = self.tx_inputs(tx, for_sig=True, keystore=keystore)
outputs = self.tx_outputs(tx, keystore=keystore)
details = SignTx(lock_time=tx.locktime, version=tx.version)
signatures, _ = client.sign_tx(self.get_coin_name(),
inputs,
outputs,
details=details,
prev_txes=prev_tx)
signatures = [(bh2u(x) + '01') for x in signatures]
tx.update_signatures(signatures)
def build_psbt(tx: Transaction, wallet: Abstract_Wallet):
# Render a PSBT file, for possible upload to Coldcard.
#
# TODO this should be part of Wallet object, or maybe Transaction?
if getattr(tx, 'raw_psbt', False):
_logger.info('PSBT cache hit')
return tx.raw_psbt
inputs = tx.inputs()
if 'prev_tx' not in inputs[0]:
# fetch info about inputs, if needed?
# - needed during export PSBT flow, not normal online signing
wallet.add_hw_info(tx)
# wallet.add_hw_info installs this attr
assert tx.output_info is not None, 'need data about outputs'
# Build a map of all pubkeys needed as derivation from master XFP, in PSBT binary format
# 1) binary version of the common subpath for all keys
# m/ => fingerprint LE32
# a/b/c => ints
#
# 2) all used keys in transaction:
# - for all inputs and outputs (when its change back)
# - for all keystores, if multisig
#
subkeys = {}
for ks in wallet.get_keystores():
# XFP + fixed prefix for this keystore
ks_prefix = packed_xfp_path_for_keystore(ks)
# all pubkeys needed for input signing
for xpubkey, derivation in ks.get_tx_derivations(tx).items():
pubkey = xpubkey_to_pubkey(xpubkey)
# assuming depth two, non-harded: change + index
aa, bb = derivation
assert 0 <= aa < 0x80000000 and 0 <= bb < 0x80000000
subkeys[bfh(pubkey)] = ks_prefix + pack('<II', aa, bb)
# all keys related to change outputs
for o in tx.outputs():
if o.address in tx.output_info:
# this address "is_mine" but might not be change (if I send funds to myself)
output_info = tx.output_info.get(o.address)
if not output_info.is_change:
continue
chg_path = output_info.address_index
assert chg_path[0] == 1 and len(
chg_path) == 2, f"unexpected change path: {chg_path}"
pubkey = ks.derive_pubkey(True, chg_path[1])
subkeys[bfh(pubkey)] = ks_prefix + pack('<II', *chg_path)
for txin in inputs:
assert txin['type'] != 'coinbase', _("Coinbase not supported")
if txin['type'] in ['p2sh', 'p2wsh-p2sh', 'p2wsh']:
assert type(wallet) is Multisig_Wallet
# Construct PSBT from start to finish.
out_fd = io.BytesIO()
out_fd.write(b'psbt\xff')
def write_kv(ktype, val, key=b''):
# serialize helper: write w/ size and key byte
out_fd.write(my_var_int(1 + len(key)))
out_fd.write(bytes([ktype]) + key)
if isinstance(val, str):
val = bfh(val)
out_fd.write(my_var_int(len(val)))
out_fd.write(val)
# global section: just the unsigned txn
class CustomTXSerialization(Transaction):
@classmethod
def input_script(cls, txin, estimate_size=False):
return ''
unsigned = bfh(
CustomTXSerialization(
tx.serialize()).serialize_to_network(witness=False))
write_kv(PSBT_GLOBAL_UNSIGNED_TX, unsigned)
if type(wallet) is Multisig_Wallet:
# always put the xpubs into the PSBT, useful at least for checking
for xp, ks in zip(wallet.get_master_public_keys(),
wallet.get_keystores()):
ks_prefix = packed_xfp_path_for_keystore(ks)
write_kv(PSBT_GLOBAL_XPUB, ks_prefix, DecodeBase58Check(xp))
# end globals section
out_fd.write(b'\x00')
# inputs section
for txin in inputs:
if Transaction.is_segwit_input(txin):
utxo = txin['prev_tx'].outputs()[txin['prevout_n']]
spendable = txin['prev_tx'].serialize_output(utxo)
write_kv(PSBT_IN_WITNESS_UTXO, spendable)
else:
write_kv(PSBT_IN_NON_WITNESS_UTXO, str(txin['prev_tx']))
pubkeys, x_pubkeys = tx.get_sorted_pubkeys(txin)
pubkeys = [bfh(k) for k in pubkeys]
if type(wallet) is Multisig_Wallet:
# always need a redeem script for multisig
scr = Transaction.get_preimage_script(txin)
if Transaction.is_segwit_input(txin):
# needed for both p2wsh-p2sh and p2wsh
write_kv(PSBT_IN_WITNESS_SCRIPT, bfh(scr))
else:
write_kv(PSBT_IN_REDEEM_SCRIPT, bfh(scr))
sigs = txin.get('signatures')
for pk_pos, (pubkey, x_pubkey) in enumerate(zip(pubkeys, x_pubkeys)):
if pubkey in subkeys:
# faster? case ... calculated above
write_kv(PSBT_IN_BIP32_DERIVATION, subkeys[pubkey], pubkey)
else:
# when an input is partly signed, tx.get_tx_derivations()
# doesn't include that keystore's value and yet we need it
# because we need to show a correct keypath...
assert x_pubkey[0:2] == 'ff', x_pubkey
for ks in wallet.get_keystores():
d = ks.get_pubkey_derivation(x_pubkey)
if d is not None:
ks_path = packed_xfp_path_for_keystore(ks, d)
write_kv(PSBT_IN_BIP32_DERIVATION, ks_path, pubkey)
break
else:
raise AssertionError("no keystore for: %s" % x_pubkey)
if txin['type'] == 'p2wpkh-p2sh':
assert len(
pubkeys) == 1, 'can be only one redeem script per input'
pa = hash_160(pubkey)
assert len(pa) == 20
write_kv(PSBT_IN_REDEEM_SCRIPT, b'\x00\x14' + pa)
# optional? insert (partial) signatures that we already have
if sigs and sigs[pk_pos]:
write_kv(PSBT_IN_PARTIAL_SIG, bfh(sigs[pk_pos]), pubkey)
out_fd.write(b'\x00')
# outputs section
for o in tx.outputs():
# can be empty, but must be present, and helpful to show change inputs
# wallet.add_hw_info() adds some data about change outputs into tx.output_info
if o.address in tx.output_info:
# this address "is_mine" but might not be change (if I send funds to myself)
output_info = tx.output_info.get(o.address)
if output_info.is_change:
pubkeys = [bfh(i) for i in wallet.get_public_keys(o.address)]
# Add redeem/witness script?
if type(wallet) is Multisig_Wallet:
# always need a redeem script for multisig cases
scr = bfh(
multisig_script([bh2u(i) for i in sorted(pubkeys)],
wallet.m))
if output_info.script_type == 'p2wsh-p2sh':
write_kv(PSBT_OUT_WITNESS_SCRIPT, scr)
write_kv(PSBT_OUT_REDEEM_SCRIPT,
b'\x00\x20' + sha256(scr))
elif output_info.script_type == 'p2wsh':
write_kv(PSBT_OUT_WITNESS_SCRIPT, scr)
elif output_info.script_type == 'p2sh':
write_kv(PSBT_OUT_REDEEM_SCRIPT, scr)
else:
raise ValueError(output_info.script_type)
elif output_info.script_type == 'p2wpkh-p2sh':
# need a redeem script when P2SH is used to wrap p2wpkh
assert len(pubkeys) == 1
pa = hash_160(pubkeys[0])
write_kv(PSBT_OUT_REDEEM_SCRIPT, b'\x00\x14' + pa)
# Document change output's bip32 derivation(s)
for pubkey in pubkeys:
sk = subkeys[pubkey]
write_kv(PSBT_OUT_BIP32_DERIVATION, sk, pubkey)
out_fd.write(b'\x00')
# capture for later use
tx.raw_psbt = out_fd.getvalue()
return tx.raw_psbt
def mock_fork(self, bad_header):
forkpoint = bad_header['block_height']
b = blockchain.Blockchain(config=self.config, forkpoint=forkpoint, parent=None,
forkpoint_hash=bh2u(sha256(str(forkpoint))), prev_hash=bh2u(sha256(str(forkpoint-1))))
return b
def __init__(self, window: 'ElectrumWindow', chan_id: bytes):
super().__init__(window)
# initialize instance fields
self.window = window
chan = self.chan = window.wallet.lnworker.channels[chan_id]
self.format_msat = lambda msat: window.format_amount_and_units(msat /
1000)
# connect signals with slots
self.ln_payment_completed.connect(self.do_ln_payment_completed)
self.ln_payment_failed.connect(self.do_ln_payment_failed)
self.state_changed.connect(self.do_state_changed)
self.htlc_added.connect(self.do_htlc_added)
# register callbacks for updating
util.register_callback(self.ln_payment_completed.emit,
['ln_payment_completed'])
util.register_callback(self.ln_payment_failed.emit,
['ln_payment_failed'])
util.register_callback(self.htlc_added.emit, ['htlc_added'])
util.register_callback(self.state_changed.emit, ['channel'])
# set attributes of QDialog
self.setWindowTitle(_('Channel Details'))
self.setMinimumSize(800, 400)
# add layouts
vbox = QtWidgets.QVBoxLayout(self)
vbox.addWidget(QLabel(_('Remote Node ID:')))
remote_id_e = ButtonsLineEdit(bh2u(chan.node_id))
remote_id_e.addCopyButton(self.window.app)
vbox.addWidget(remote_id_e)
funding_label_text = f'<a href=click_destination>{chan.funding_outpoint.txid}</a>:{chan.funding_outpoint.output_index}'
vbox.addWidget(QLabel(_('Funding Outpoint:')))
vbox.addWidget(LinkedLabel(funding_label_text, self.show_tx))
form_layout = QtWidgets.QFormLayout(None)
# add form content
form_layout.addRow(
_('Channel ID:'),
SelectableLabel(
f"{chan.channel_id.hex()} (Short: {chan.short_channel_id})"))
form_layout.addRow(_('State:'),
SelectableLabel(chan.get_state_for_GUI()))
self.initiator = 'Local' if chan.constraints.is_initiator else 'Remote'
form_layout.addRow(_('Initiator:'), SelectableLabel(self.initiator))
self.capacity = self.window.format_amount_and_units(
chan.constraints.capacity)
form_layout.addRow(_('Capacity:'), SelectableLabel(self.capacity))
self.can_send_label = SelectableLabel()
self.can_receive_label = SelectableLabel()
form_layout.addRow(_('Can send:'), self.can_send_label)
form_layout.addRow(_('Can receive:'), self.can_receive_label)
self.received_label = SelectableLabel()
form_layout.addRow(_('Received:'), self.received_label)
self.sent_label = SelectableLabel()
form_layout.addRow(_('Sent:'), self.sent_label)
#self.htlc_minimum_msat = SelectableLabel(str(chan.config[REMOTE].htlc_minimum_msat))
#form_layout.addRow(_('Minimum HTLC value accepted by peer (mSAT):'), self.htlc_minimum_msat)
#self.max_htlcs = SelectableLabel(str(chan.config[REMOTE].max_accepted_htlcs))
#form_layout.addRow(_('Maximum number of concurrent HTLCs accepted by peer:'), self.max_htlcs)
#self.max_htlc_value = SelectableLabel(self.window.format_amount_and_units(chan.config[REMOTE].max_htlc_value_in_flight_msat / 1000))
#form_layout.addRow(_('Maximum value of in-flight HTLCs accepted by peer:'), self.max_htlc_value)
self.dust_limit = SelectableLabel(
self.window.format_amount_and_units(
chan.config[REMOTE].dust_limit_sat))
form_layout.addRow(_('Remote dust limit:'), self.dust_limit)
self.remote_reserve = self.window.format_amount_and_units(
chan.config[REMOTE].reserve_sat)
form_layout.addRow(_('Remote reserve:'),
SelectableLabel(self.remote_reserve))
vbox.addLayout(form_layout)
# add htlc tree view to vbox (wouldn't scale correctly in QFormLayout)
vbox.addWidget(QLabel(_('Payments (HTLCs):')))
w = QtWidgets.QTreeView(self)
htlc_dict = chan.get_payments()
w.setModel(self.make_model(htlc_dict))
w.header().setSectionResizeMode(0,
QtWidgets.QHeaderView.ResizeToContents)
vbox.addWidget(w)
vbox.addLayout(Buttons(CloseButton(self)))
# initialize sent/received fields
self.update()
def sign_transaction(
self,
keystore: Hardware_KeyStore,
tx: PartialTransaction,
wallet: Deterministic_Wallet,
):
if tx.is_complete():
return
if self.bitbox02_device is None:
raise Exception(
"Need to setup communication first before attempting any BitBox02 calls"
)
coin = bitbox02.btc.ACM
if constants.net.TESTNET:
coin = bitbox02.btc.TLTC
tx_script_type = None
# Build BTCInputType list
inputs = []
for txin in tx.inputs():
_, full_path = keystore.find_my_pubkey_in_txinout(txin)
if full_path is None:
raise Exception(
"A wallet owned pubkey was not found in the transaction input to be signed"
)
inputs.append(
{
"prev_out_hash": txin.prevout.txid[::-1],
"prev_out_index": txin.prevout.out_idx,
"prev_out_value": txin.value_sats(),
"sequence": txin.nsequence,
"keypath": full_path,
}
)
if tx_script_type == None:
tx_script_type = txin.script_type
elif tx_script_type != txin.script_type:
raise Exception("Cannot mix different input script types")
if tx_script_type == "p2wpkh":
tx_script_type = bitbox02.btc.BTCScriptConfig(
simple_type=bitbox02.btc.BTCScriptConfig.P2WPKH
)
elif tx_script_type == "p2wpkh-p2sh":
tx_script_type = bitbox02.btc.BTCScriptConfig(
simple_type=bitbox02.btc.BTCScriptConfig.P2WPKH_P2SH
)
elif tx_script_type == "p2wsh":
if type(wallet) is Multisig_Wallet:
tx_script_type = self.btc_multisig_config(coin, full_path, wallet)
else:
raise Exception("Can only use p2wsh with multisig wallets")
else:
raise UserFacingException(
"invalid input script type: {} is not supported by the BitBox02".format(
tx_script_type
)
)
# Build BTCOutputType list
outputs = []
for txout in tx.outputs():
assert txout.address
# check for change
if txout.is_change:
_, change_pubkey_path = keystore.find_my_pubkey_in_txinout(txout)
outputs.append(
bitbox02.BTCOutputInternal(
keypath=change_pubkey_path, value=txout.value,
)
)
else:
addrtype, pubkey_hash = bitcoin.address_to_hash(txout.address)
if addrtype == OnchainOutputType.P2PKH:
output_type = bitbox02.btc.P2PKH
elif addrtype == OnchainOutputType.P2SH:
output_type = bitbox02.btc.P2SH
elif addrtype == OnchainOutputType.WITVER0_P2WPKH:
output_type = bitbox02.btc.P2WPKH
elif addrtype == OnchainOutputType.WITVER0_P2WSH:
output_type = bitbox02.btc.P2WSH
else:
raise UserFacingException(
"Received unsupported output type during transaction signing: {} is not supported by the BitBox02".format(
addrtype
)
)
outputs.append(
bitbox02.BTCOutputExternal(
output_type=output_type,
output_hash=pubkey_hash,
value=txout.value,
)
)
if type(wallet) is Standard_Wallet:
keypath_account = full_path[:3]
elif type(wallet) is Multisig_Wallet:
keypath_account = full_path[:4]
else:
raise Exception(
"BitBox02 does not support this wallet type: {}".format(type(wallet))
)
sigs = self.bitbox02_device.btc_sign(
coin,
tx_script_type,
keypath_account=keypath_account,
inputs=inputs,
outputs=outputs,
locktime=tx.locktime,
version=tx.version,
)
# Fill signatures
if len(sigs) != len(tx.inputs()):
raise Exception("Incorrect number of inputs signed.") # Should never occur
signatures = [bh2u(ecc.der_sig_from_sig_string(x[1])) + "01" for x in sigs]
tx.update_signatures(signatures)
def new_channel_dialog(self):
lnworker = self.parent.wallet.lnworker
d = WindowModalDialog(self.parent, _('Open Channel'))
vbox = QVBoxLayout(d)
vbox.addWidget(
QLabel(_('Enter Remote Node ID or connection string or invoice')))
local_nodeid = FreezableLineEdit()
local_nodeid.setMinimumWidth(700)
local_nodeid.setText(bh2u(lnworker.node_keypair.pubkey))
local_nodeid.setFrozen(True)
local_nodeid.setCursorPosition(0)
remote_nodeid = QLineEdit()
remote_nodeid.setMinimumWidth(700)
amount_e = BTCAmountEdit(self.parent.get_decimal_point)
# max button
def spend_max():
amount_e.setFrozen(max_button.isChecked())
if not max_button.isChecked():
return
make_tx = self.parent.mktx_for_open_channel('!')
try:
tx = make_tx(None)
except (NotEnoughFunds, NoDynamicFeeEstimates) as e:
max_button.setChecked(False)
amount_e.setFrozen(False)
self.main_window.show_error(str(e))
return
amount = tx.output_value()
amount = min(amount, LN_MAX_FUNDING_SAT)
amount_e.setAmount(amount)
max_button = EnterButton(_("Max"), spend_max)
max_button.setFixedWidth(100)
max_button.setCheckable(True)
suggest_button = QPushButton(d, text=_('Suggest'))
suggest_button.clicked.connect(lambda: remote_nodeid.setText(
bh2u(lnworker.suggest_peer() or b'')))
clear_button = QPushButton(d, text=_('Clear'))
def on_clear():
amount_e.setText('')
remote_nodeid.setText('')
max_button.setChecked(False)
clear_button.clicked.connect(on_clear)
h = QGridLayout()
h.addWidget(QLabel(_('Your Node ID')), 0, 0)
h.addWidget(local_nodeid, 0, 1, 1, 3)
h.addWidget(QLabel(_('Remote Node ID')), 1, 0)
h.addWidget(remote_nodeid, 1, 1, 1, 3)
h.addWidget(suggest_button, 2, 1)
h.addWidget(clear_button, 2, 2)
h.addWidget(QLabel('Amount'), 3, 0)
h.addWidget(amount_e, 3, 1)
h.addWidget(max_button, 3, 2)
vbox.addLayout(h)
ok_button = OkButton(d)
ok_button.setDefault(True)
vbox.addLayout(Buttons(CancelButton(d), ok_button))
if not d.exec_():
return
if max_button.isChecked(
) and amount_e.get_amount() < LN_MAX_FUNDING_SAT:
# if 'max' enabled and amount is strictly less than max allowed,
# that means we have fewer coins than max allowed, and hence we can
# spend all coins
funding_sat = '!'
else:
funding_sat = amount_e.get_amount()
connect_str = str(remote_nodeid.text()).strip()
if not connect_str or not funding_sat:
return
self.parent.open_channel(connect_str, funding_sat, 0)
