mirror of
https://github.com/LBRYFoundation/LBRY-Vault.git
synced 2025-08-23 17:47:31 +00:00
221 lines
10 KiB
Python
221 lines
10 KiB
Python
import traceback
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import sys
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import json
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import binascii
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import asyncio
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import time
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import os
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from decimal import Decimal
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import binascii
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import asyncio
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from . import constants
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from .bitcoin import sha256, COIN
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from .util import bh2u, bfh
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from .constants import set_testnet, set_simnet
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from .simple_config import SimpleConfig
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from .network import Network
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from .storage import WalletStorage
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from .wallet import Wallet
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from .lnbase import Peer, Outpoint, ChannelConfig, LocalState, RemoteState, Keypair, OnlyPubkeyKeypair, OpenChannel, ChannelConstraints, RevocationStore, aiosafe, calc_short_channel_id, privkey_to_pubkey
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from .lightning_payencode.lnaddr import lnencode, LnAddr, lndecode
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from . import lnrouter
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is_key = lambda k: k.endswith("_basepoint") or k.endswith("_key")
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def maybeDecode(k, v):
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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:
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return binascii.unhexlify(v)
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return v
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def decodeAll(v):
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return {i: maybeDecode(i, j) for i, j in v.items()} if isinstance(v, dict) else v
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def typeWrap(k, v, local):
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if is_key(k):
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if local:
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return Keypair(**v)
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else:
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return OnlyPubkeyKeypair(**v)
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return v
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def reconstruct_namedtuples(openingchannel):
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openingchannel = decodeAll(openingchannel)
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openingchannel=OpenChannel(**openingchannel)
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openingchannel = openingchannel._replace(funding_outpoint=Outpoint(**openingchannel.funding_outpoint))
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new_local_config = {k: typeWrap(k, decodeAll(v), True) for k, v in openingchannel.local_config.items()}
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openingchannel = openingchannel._replace(local_config=ChannelConfig(**new_local_config))
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new_remote_config = {k: typeWrap(k, decodeAll(v), False) for k, v in openingchannel.remote_config.items()}
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openingchannel = openingchannel._replace(remote_config=ChannelConfig(**new_remote_config))
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new_local_state = decodeAll(openingchannel.local_state)
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openingchannel = openingchannel._replace(local_state=LocalState(**new_local_state))
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new_remote_state = decodeAll(openingchannel.remote_state)
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new_remote_state["revocation_store"] = RevocationStore.from_json_obj(new_remote_state["revocation_store"])
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openingchannel = openingchannel._replace(remote_state=RemoteState(**new_remote_state))
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openingchannel = openingchannel._replace(constraints=ChannelConstraints(**openingchannel.constraints))
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return openingchannel
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def serialize_channels(channels):
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serialized_channels = []
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for chan in channels:
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namedtuples_to_dict = lambda v: {i: j._asdict() if isinstance(j, tuple) else j for i, j in v._asdict().items()}
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serialized_channels.append({k: namedtuples_to_dict(v) if isinstance(v, tuple) else v for k, v in chan._asdict().items()})
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class MyJsonEncoder(json.JSONEncoder):
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def default(self, o):
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if isinstance(o, bytes):
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return binascii.hexlify(o).decode("ascii")
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if isinstance(o, RevocationStore):
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return o.serialize()
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return super(MyJsonEncoder, self)
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dumped = MyJsonEncoder().encode(serialized_channels)
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roundtripped = json.loads(dumped)
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reconstructed = [reconstruct_namedtuples(x) for x in roundtripped]
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if reconstructed != channels:
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raise Exception("Channels did not roundtrip serialization without changes:\n" + repr(reconstructed) + "\n" + repr(channels))
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return roundtripped
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# hardcoded nodes
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node_list = [
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('ecdsa.net', '9735', '038370f0e7a03eded3e1d41dc081084a87f0afa1c5b22090b4f3abb391eb15d8ff'),
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]
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class LNWorker:
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def __init__(self, wallet, network):
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self.wallet = wallet
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self.network = network
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self.privkey = sha256(b"0123456789")
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self.config = network.config
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self.peers = {}
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# view of the network
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self.nodes = {} # received node announcements
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self.channel_db = lnrouter.ChannelDB()
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self.path_finder = lnrouter.LNPathFinder(self.channel_db)
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self.channels = [reconstruct_namedtuples(x) for x in wallet.storage.get("channels", {})]
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peer_list = network.config.get('lightning_peers', node_list)
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self.channel_state = {}
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for host, port, pubkey in peer_list:
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self.add_peer(host, int(port), pubkey)
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# wait until we see confirmations
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self.network.register_callback(self.on_network_update, ['updated', 'verified']) # thread safe
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self.on_network_update('updated') # shortcut (don't block) if funding tx locked and verified
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def add_peer(self, host, port, pubkey):
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node_id = bfh(pubkey)
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channels = list(filter(lambda x: x.node_id == node_id, self.channels))
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peer = Peer(host, int(port), node_id, self.privkey, self.network, self.channel_db, self.path_finder, self.channel_state, channels)
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self.network.futures.append(asyncio.run_coroutine_threadsafe(peer.main_loop(), asyncio.get_event_loop()))
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self.peers[node_id] = peer
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def save_channel(self, openchannel):
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self.channels = [openchannel] # TODO multiple channels
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dumped = serialize_channels(self.channels)
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self.wallet.storage.put("channels", dumped)
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self.wallet.storage.write()
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def on_network_update(self, event, *args):
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for chan in self.channels:
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peer = self.peers[chan.node_id]
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conf = self.wallet.get_tx_height(chan.funding_outpoint.txid)[1]
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if conf >= chan.constraints.funding_txn_minimum_depth:
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block_height, tx_pos = self.wallet.get_txpos(chan.funding_outpoint.txid)
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if tx_pos == -1:
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self.print_error('funding tx is not yet SPV verified.. but there are '
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'already enough confirmations (currently {})'.format(conf))
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return
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if chan.channel_id not in self.channel_state or self.channel_state[chan.channel_id] != "OPENING":
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return
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asyncio.run_coroutine_threadsafe(self.set_local_funding_locked_result(peer, chan, block_height, tx_pos), asyncio.get_event_loop())
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# aiosafe because we don't wait for result
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@aiosafe
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async def set_local_funding_locked_result(self, peer, chan, block_height, tx_pos):
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channel_id = chan.channel_id
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short_channel_id = calc_short_channel_id(block_height, tx_pos, chan.funding_outpoint.output_index)
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try:
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peer.local_funding_locked[channel_id].set_result(short_channel_id)
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except (asyncio.InvalidStateError, KeyError) as e:
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# FIXME race condition if updates come in quickly, set_result might be called multiple times
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# or self.local_funding_locked[channel_id] might be deleted already
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self.print_error('local_funding_locked.set_result error for channel {}: {}'.format(channel_id, e))
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openchannel = await peer.funding_locked(chan)
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self.save_channel(openchannel)
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print("CHANNEL OPENING COMPLETED")
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# not aiosafe because we call .result() which will propagate an exception
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async def _open_channel_coroutine(self, node_id, amount, push_msat, password):
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peer = self.peers[bfh(node_id)]
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openingchannel = await peer.channel_establishment_flow(self.wallet, self.config, password, amount, push_msat, temp_channel_id=os.urandom(32))
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self.save_channel(openingchannel)
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def open_channel(self, node_id, local_amt, push_amt, pw):
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coro = self._open_channel_coroutine(node_id, local_amt, push_amt, None if pw == "" else pw)
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return asyncio.run_coroutine_threadsafe(coro, self.network.asyncio_loop).result()
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#chan = fut.result()
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# https://api.lightning.community/#listchannels
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#std_chan = {"chan_id": chan.channel_id}
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#emit_function({"channels": [std_chan]})
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def get_paid(self):
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coro = self._get_paid_coroutine()
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return asyncio.run_coroutine_threadsafe(coro, self.network.asyncio_loop).result()
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def pay(self, invoice):
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coro = self._pay_coroutine(invoice)
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return asyncio.run_coroutine_threadsafe(coro, self.network.asyncio_loop).result()
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def list_channels(self):
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return serialize_channels(self.channels)
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# not aiosafe because we call .result() which will propagate an exception
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async def _pay_coroutine(self, invoice):
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openchannel = self.channels[0]
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addr = lndecode(invoice, expected_hrp=constants.net.SEGWIT_HRP)
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payment_hash = addr.paymenthash
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pubkey = addr.pubkey.serialize()
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msat_amt = int(addr.amount * COIN * 1000)
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peer = self.peers[openchannel.node_id]
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openchannel = await peer.pay(self.wallet, openchannel, msat_amt, payment_hash, pubkey, addr.min_final_cltv_expiry)
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self.save_channel(openchannel)
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# not aiosafe because we call .result() which will propagate an exception
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async def _get_paid_coroutine(self):
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openchannel = self.channels[0]
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payment_preimage = os.urandom(32)
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RHASH = sha256(payment_preimage)
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expected_received_sat = 200000
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expected_received_msat = expected_received_sat * 1000
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peer = self.peers[openchannel.node_id]
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pay_req = lnencode(LnAddr(RHASH, amount=1/Decimal(COIN)*expected_received_sat, tags=[('d', 'one cup of coffee')]), peer.privkey)
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decoded = lndecode(pay_req, expected_hrp="sb")
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assert decoded.pubkey.serialize() == privkey_to_pubkey(self.privkey)
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print("payment request", pay_req)
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openchannel = await peer.receive_commitment_revoke_ack(openchannel, expected_received_msat, payment_preimage)
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self.save_channel(openchannel)
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def subscribe_payment_received_from_other_thread(self, emit_function):
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pass
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def subscribe_channel_list_updates_from_other_thread(self, emit_function):
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pass
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def subscribe_single_channel_update_from_other_thread(self, emit_function):
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pass
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def add_invoice_from_other_thread(self, amt):
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pass
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def subscribe_invoice_added_from_other_thread(self, emit_function):
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pass
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def pay_invoice_from_other_thread(self, lnaddr):
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pass
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