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swaps: add safeguards to gui

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This commit is contained in:
ThomasV 2020-05-28 15:03:57 +02:00
parent 5fa09970b6
commit e6e6103434
1 changed files with 27 additions and 7 deletions
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34
electrum/gui/qt/swap_dialog.py
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@ -20,6 +20,12 @@ from .fee_slider import FeeSlider, FeeComboBox
import asyncio
from .util import read_QIcon
CANNOT_RECEIVE_WARNING = """
The requested amount is higher than what you can receive in your currently open channels.
If you continue, your funds will be locked until the remote server can find a path to pay you.
If the swap cannot be performed after 24h, you will be refunded.
Do you want to continue?
"""
class SwapDialog(WindowModalDialog):
@ -27,7 +33,8 @@ class SwapDialog(WindowModalDialog):
WindowModalDialog.__init__(self, window, _('Submarine Swap'))
self.window = window
self.config = window.config
self.swap_manager = self.window.wallet.lnworker.swap_manager
self.lnworker = self.window.wallet.lnworker
self.swap_manager = self.lnworker.swap_manager
self.network = window.network
vbox = QVBoxLayout(self)
vbox.addWidget(WWLabel('Swap lightning funds for on-chain funds if you need to increase your receiving capacity. This service is powered by the Boltz backend.'))
@ -92,9 +99,12 @@ class SwapDialog(WindowModalDialog):
if self.send_amount_e.follows:
return
self.send_amount_e.setStyleSheet(ColorScheme.DEFAULT.as_stylesheet())
amount = self.send_amount_e.get_amount()
send_amount = self.send_amount_e.get_amount()
recv_amount = self.swap_manager.get_recv_amount(send_amount, self.is_reverse)
if self.is_reverse and send_amount and send_amount > self.lnworker.num_sats_can_send():
recv_amount = None
self.recv_amount_e.follows = True
self.recv_amount_e.setAmount(self.swap_manager.get_recv_amount(amount, self.is_reverse))
self.recv_amount_e.setAmount(recv_amount)
self.recv_amount_e.setStyleSheet(ColorScheme.BLUE.as_stylesheet())
self.recv_amount_e.follows = False
self.send_follows = False
@ -103,9 +113,12 @@ class SwapDialog(WindowModalDialog):
if self.recv_amount_e.follows:
return
self.recv_amount_e.setStyleSheet(ColorScheme.DEFAULT.as_stylesheet())
amount = self.recv_amount_e.get_amount()
recv_amount = self.recv_amount_e.get_amount()
send_amount = self.swap_manager.get_send_amount(recv_amount, self.is_reverse)
if self.is_reverse and send_amount and send_amount > self.lnworker.num_sats_can_send():
send_amount = None
self.send_amount_e.follows = True
self.send_amount_e.setAmount(self.swap_manager.get_send_amount(amount, self.is_reverse))
self.send_amount_e.setAmount(send_amount)
self.send_amount_e.setStyleSheet(ColorScheme.BLUE.as_stylesheet())
self.send_amount_e.follows = False
self.send_follows = True
@ -124,12 +137,19 @@ class SwapDialog(WindowModalDialog):
return
if self.is_reverse:
lightning_amount = self.send_amount_e.get_amount()
onchain_amount = self.recv_amount_e.get_amount() + self.swap_manager.get_claim_fee()
coro = self.swap_manager.reverse_swap(lightning_amount, onchain_amount)
onchain_amount = self.recv_amount_e.get_amount()
if lightning_amount is None or onchain_amount is None:
return
coro = self.swap_manager.reverse_swap(lightning_amount, onchain_amount + self.swap_manager.get_claim_fee())
self.window.run_coroutine_from_thread(coro)
else:
lightning_amount = self.recv_amount_e.get_amount()
onchain_amount = self.send_amount_e.get_amount()
if lightning_amount is None or onchain_amount is None:
return
if lightning_amount > self.lnworker.num_sats_can_receive():
if not self.window.question(CANNOT_RECEIVE_WARNING):
return
self.window.protect(self.do_normal_swap, (lightning_amount, onchain_amount))
def do_normal_swap(self, lightning_amount, onchain_amount, password):