You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
238 lines
11 KiB
238 lines
11 KiB
import traceback
|
|
import sys
|
|
import json
|
|
import binascii
|
|
import asyncio
|
|
import time
|
|
import os
|
|
from decimal import Decimal
|
|
import binascii
|
|
import asyncio
|
|
|
|
|
|
from . import constants
|
|
from .bitcoin import sha256, COIN
|
|
from .util import bh2u, bfh
|
|
from .constants import set_testnet, set_simnet
|
|
from .simple_config import SimpleConfig
|
|
from .network import Network
|
|
from .storage import WalletStorage
|
|
from .wallet import Wallet
|
|
from .lnbase import Peer, Outpoint, ChannelConfig, LocalState, RemoteState, Keypair, OnlyPubkeyKeypair, OpenChannel, ChannelConstraints, RevocationStore, aiosafe, calc_short_channel_id, privkey_to_pubkey
|
|
from .lightning_payencode.lnaddr import lnencode, LnAddr, lndecode
|
|
from . import lnrouter
|
|
|
|
|
|
is_key = lambda k: k.endswith("_basepoint") or k.endswith("_key")
|
|
|
|
def maybeDecode(k, v):
|
|
if k in ["node_id", "short_channel_id", "pubkey", "privkey", "last_per_commitment_point", "next_per_commitment_point", "per_commitment_secret_seed"] and v is not None:
|
|
return binascii.unhexlify(v)
|
|
return v
|
|
|
|
def decodeAll(v):
|
|
return {i: maybeDecode(i, j) for i, j in v.items()} if isinstance(v, dict) else v
|
|
|
|
def typeWrap(k, v, local):
|
|
if is_key(k):
|
|
if local:
|
|
return Keypair(**v)
|
|
else:
|
|
return OnlyPubkeyKeypair(**v)
|
|
return v
|
|
|
|
def reconstruct_namedtuples(openingchannel):
|
|
openingchannel = decodeAll(openingchannel)
|
|
openingchannel=OpenChannel(**openingchannel)
|
|
openingchannel = openingchannel._replace(funding_outpoint=Outpoint(**openingchannel.funding_outpoint))
|
|
new_local_config = {k: typeWrap(k, decodeAll(v), True) for k, v in openingchannel.local_config.items()}
|
|
openingchannel = openingchannel._replace(local_config=ChannelConfig(**new_local_config))
|
|
new_remote_config = {k: typeWrap(k, decodeAll(v), False) for k, v in openingchannel.remote_config.items()}
|
|
openingchannel = openingchannel._replace(remote_config=ChannelConfig(**new_remote_config))
|
|
new_local_state = decodeAll(openingchannel.local_state)
|
|
openingchannel = openingchannel._replace(local_state=LocalState(**new_local_state))
|
|
new_remote_state = decodeAll(openingchannel.remote_state)
|
|
new_remote_state["revocation_store"] = RevocationStore.from_json_obj(new_remote_state["revocation_store"])
|
|
openingchannel = openingchannel._replace(remote_state=RemoteState(**new_remote_state))
|
|
openingchannel = openingchannel._replace(constraints=ChannelConstraints(**openingchannel.constraints))
|
|
return openingchannel
|
|
|
|
def serialize_channels(channels):
|
|
serialized_channels = []
|
|
for chan in channels:
|
|
namedtuples_to_dict = lambda v: {i: j._asdict() if isinstance(j, tuple) else j for i, j in v._asdict().items()}
|
|
serialized_channels.append({k: namedtuples_to_dict(v) if isinstance(v, tuple) else v for k, v in chan._asdict().items()})
|
|
class MyJsonEncoder(json.JSONEncoder):
|
|
def default(self, o):
|
|
if isinstance(o, bytes):
|
|
return binascii.hexlify(o).decode("ascii")
|
|
if isinstance(o, RevocationStore):
|
|
return o.serialize()
|
|
return super(MyJsonEncoder, self)
|
|
dumped = MyJsonEncoder().encode(serialized_channels)
|
|
roundtripped = json.loads(dumped)
|
|
reconstructed = [reconstruct_namedtuples(x) for x in roundtripped]
|
|
if reconstructed != channels:
|
|
raise Exception("Channels did not roundtrip serialization without changes:\n" + repr(reconstructed) + "\n" + repr(channels))
|
|
return roundtripped
|
|
|
|
|
|
|
|
|
|
# hardcoded nodes
|
|
node_list = [
|
|
('ecdsa.net', '9735', '038370f0e7a03eded3e1d41dc081084a87f0afa1c5b22090b4f3abb391eb15d8ff'),
|
|
]
|
|
|
|
|
|
|
|
class LNWorker:
|
|
|
|
def __init__(self, wallet, network):
|
|
self.wallet = wallet
|
|
self.network = network
|
|
self.privkey = sha256(b"0123456789")
|
|
self.config = network.config
|
|
self.peers = {}
|
|
# view of the network
|
|
self.nodes = {} # received node announcements
|
|
self.channel_db = lnrouter.ChannelDB()
|
|
self.path_finder = lnrouter.LNPathFinder(self.channel_db)
|
|
|
|
self.channels = [reconstruct_namedtuples(x) for x in wallet.storage.get("channels", {})]
|
|
peer_list = network.config.get('lightning_peers', node_list)
|
|
self.channel_state = {}
|
|
for host, port, pubkey in peer_list:
|
|
self.add_peer(host, int(port), pubkey)
|
|
# wait until we see confirmations
|
|
self.network.register_callback(self.on_network_update, ['updated', 'verified']) # thread safe
|
|
self.on_network_update('updated') # shortcut (don't block) if funding tx locked and verified
|
|
|
|
def add_peer(self, host, port, pubkey):
|
|
peer = Peer(host, int(port), binascii.unhexlify(pubkey), self.privkey,
|
|
self.network, self.channel_db, self.path_finder, self.channel_state, self.handle_channel_reestablish)
|
|
self.network.futures.append(asyncio.run_coroutine_threadsafe(peer.main_loop(), asyncio.get_event_loop()))
|
|
self.peers[bfh(pubkey)] = peer
|
|
|
|
async def handle_channel_reestablish(self, chan_id, payload):
|
|
chans = [x for x in self.channels if x.channel_id == chan_id ]
|
|
chan = chans[0]
|
|
await self.peers[chan.node_id].reestablish_channel(chan)
|
|
|
|
def save_channel(self, openchannel):
|
|
self.channels = [openchannel] # TODO multiple channels
|
|
dumped = serialize_channels(self.channels)
|
|
self.wallet.storage.put("channels", dumped)
|
|
self.wallet.storage.write()
|
|
|
|
def on_network_update(self, event, *args):
|
|
for chan in self.channels:
|
|
peer = self.peers[chan.node_id]
|
|
conf = self.wallet.get_tx_height(chan.funding_outpoint.txid)[1]
|
|
if conf >= chan.constraints.funding_txn_minimum_depth:
|
|
block_height, tx_pos = self.wallet.get_txpos(chan.funding_outpoint.txid)
|
|
if tx_pos == -1:
|
|
self.print_error('funding tx is not yet SPV verified.. but there are '
|
|
'already enough confirmations (currently {})'.format(conf))
|
|
return
|
|
if chan.channel_id not in self.channel_state or self.channel_state[chan.channel_id] != "OPENING":
|
|
return
|
|
asyncio.run_coroutine_threadsafe(self.set_local_funding_locked_result(peer, chan, block_height, tx_pos), asyncio.get_event_loop())
|
|
|
|
# aiosafe because we don't wait for result
|
|
@aiosafe
|
|
async def set_local_funding_locked_result(self, peer, chan, block_height, tx_pos):
|
|
channel_id = chan.channel_id
|
|
short_channel_id = calc_short_channel_id(block_height, tx_pos, chan.funding_outpoint.output_index)
|
|
try:
|
|
peer.local_funding_locked[channel_id].set_result(short_channel_id)
|
|
except (asyncio.InvalidStateError, KeyError) as e:
|
|
# FIXME race condition if updates come in quickly, set_result might be called multiple times
|
|
# or self.local_funding_locked[channel_id] might be deleted already
|
|
self.print_error('local_funding_locked.set_result error for channel {}: {}'.format(channel_id, e))
|
|
openchannel = await peer.funding_locked(chan)
|
|
self.save_channel(openchannel)
|
|
print("CHANNEL OPENING COMPLETED")
|
|
|
|
# not aiosafe because we call .result() which will propagate an exception
|
|
async def _open_channel_coroutine(self, node_id, amount, push_msat, password):
|
|
peer = self.peers[bfh(node_id)]
|
|
openingchannel = await peer.channel_establishment_flow(self.wallet, self.config, password, amount, push_msat, temp_channel_id=os.urandom(32))
|
|
self.save_channel(openingchannel)
|
|
|
|
def open_channel(self, node_id, local_amt, push_amt, pw):
|
|
coro = self._open_channel_coroutine(node_id, local_amt, push_amt, None if pw == "" else pw)
|
|
return asyncio.run_coroutine_threadsafe(coro, self.network.asyncio_loop).result()
|
|
#chan = fut.result()
|
|
# https://api.lightning.community/#listchannels
|
|
#std_chan = {"chan_id": chan.channel_id}
|
|
#emit_function({"channels": [std_chan]})
|
|
|
|
def get_paid(self):
|
|
coro = self._get_paid_coroutine()
|
|
return asyncio.run_coroutine_threadsafe(coro, self.network.asyncio_loop).result()
|
|
|
|
def pay(self, invoice):
|
|
coro = self._pay_coroutine(invoice)
|
|
return asyncio.run_coroutine_threadsafe(coro, self.network.asyncio_loop).result()
|
|
|
|
def list_channels(self):
|
|
return serialize_channels(self.channels)
|
|
|
|
def reestablish_channels(self):
|
|
coro = self._reestablish_channels_coroutine()
|
|
return asyncio.run_coroutine_threadsafe(coro, self.network.asyncio_loop).result()
|
|
|
|
# not aiosafe because we call .result() which will propagate an exception
|
|
async def _reestablish_channels_coroutine(self):
|
|
if self.channels is None or len(self.channels) < 1:
|
|
raise Exception("Can't reestablish: No channel saved")
|
|
peer = self.peers[self.channels[0].node_id]
|
|
await peer.reestablish_channel(self.channels[0])
|
|
|
|
# not aiosafe because we call .result() which will propagate an exception
|
|
async def _pay_coroutine(self, invoice):
|
|
openchannel = self.channels[0]
|
|
addr = lndecode(invoice, expected_hrp=constants.net.SEGWIT_HRP)
|
|
payment_hash = addr.paymenthash
|
|
pubkey = addr.pubkey.serialize()
|
|
msat_amt = int(addr.amount * COIN * 1000)
|
|
peer = self.peers[openchannel.node_id]
|
|
openchannel = await peer.pay(self.wallet, openchannel, msat_amt, payment_hash, pubkey, addr.min_final_cltv_expiry)
|
|
self.save_channel(openchannel)
|
|
|
|
# not aiosafe because we call .result() which will propagate an exception
|
|
async def _get_paid_coroutine(self):
|
|
openchannel = self.channels[0]
|
|
payment_preimage = os.urandom(32)
|
|
RHASH = sha256(payment_preimage)
|
|
expected_received_sat = 200000
|
|
expected_received_msat = expected_received_sat * 1000
|
|
peer = self.peers[openchannel.node_id]
|
|
pay_req = lnencode(LnAddr(RHASH, amount=1/Decimal(COIN)*expected_received_sat, tags=[('d', 'one cup of coffee')]), peer.privkey)
|
|
decoded = lndecode(pay_req, expected_hrp="sb")
|
|
assert decoded.pubkey.serialize() == privkey_to_pubkey(self.privkey)
|
|
print("payment request", pay_req)
|
|
openchannel = await peer.receive_commitment_revoke_ack(openchannel, expected_received_msat, payment_preimage)
|
|
self.save_channel(openchannel)
|
|
|
|
|
|
def subscribe_payment_received_from_other_thread(self, emit_function):
|
|
pass
|
|
|
|
def subscribe_channel_list_updates_from_other_thread(self, emit_function):
|
|
pass
|
|
|
|
def subscribe_single_channel_update_from_other_thread(self, emit_function):
|
|
pass
|
|
|
|
def add_invoice_from_other_thread(self, amt):
|
|
pass
|
|
|
|
def subscribe_invoice_added_from_other_thread(self, emit_function):
|
|
pass
|
|
|
|
def pay_invoice_from_other_thread(self, lnaddr):
|
|
pass
|
|
|
|
|
|
|