|
|
|
@ -22,102 +22,86 @@ |
|
|
|
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
|
|
|
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
|
|
|
# SOFTWARE. |
|
|
|
import traceback |
|
|
|
import ssl |
|
|
|
import asyncio |
|
|
|
from aiorpcx import ClientSession, Request, Notification, TaskGroup |
|
|
|
from threading import Lock |
|
|
|
import hashlib |
|
|
|
import concurrent.futures |
|
|
|
|
|
|
|
# from .bitcoin import Hash, hash_encode |
|
|
|
from .transaction import Transaction |
|
|
|
from .util import ThreadJob, bh2u |
|
|
|
from .util import ThreadJob, bh2u, PrintError, aiosafe |
|
|
|
from .bitcoin import address_to_scripthash |
|
|
|
from .version import ELECTRUM_VERSION, PROTOCOL_VERSION |
|
|
|
|
|
|
|
|
|
|
|
class Synchronizer(ThreadJob): |
|
|
|
def history_status(h): |
|
|
|
if not h: |
|
|
|
return None |
|
|
|
status = '' |
|
|
|
for tx_hash, height in h: |
|
|
|
status += tx_hash + ':%d:' % height |
|
|
|
return bh2u(hashlib.sha256(status.encode('ascii')).digest()) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
class NotificationSession(ClientSession): |
|
|
|
|
|
|
|
def __init__(self, queue, *args, **kwargs): |
|
|
|
super(NotificationSession, self).__init__(*args, **kwargs) |
|
|
|
self.queue = queue |
|
|
|
|
|
|
|
@aiosafe |
|
|
|
async def handle_request(self, request): |
|
|
|
if isinstance(request, Notification): |
|
|
|
if request.method == 'blockchain.scripthash.subscribe': |
|
|
|
args = request.args |
|
|
|
await self.queue.put((args[0], args[1])) |
|
|
|
|
|
|
|
|
|
|
|
class Synchronizer(PrintError): |
|
|
|
'''The synchronizer keeps the wallet up-to-date with its set of |
|
|
|
addresses and their transactions. It subscribes over the network |
|
|
|
to wallet addresses, gets the wallet to generate new addresses |
|
|
|
when necessary, requests the transaction history of any addresses |
|
|
|
we don't have the full history of, and requests binary transaction |
|
|
|
data of any transactions the wallet doesn't have. |
|
|
|
|
|
|
|
External interface: __init__() and add() member functions. |
|
|
|
''' |
|
|
|
|
|
|
|
def __init__(self, wallet, network): |
|
|
|
def __init__(self, wallet): |
|
|
|
self.wallet = wallet |
|
|
|
self.network = network |
|
|
|
self.new_addresses = set() |
|
|
|
# Entries are (tx_hash, tx_height) tuples |
|
|
|
self.requested_tx = {} |
|
|
|
self.requested_histories = {} |
|
|
|
self.requested_addrs = set() |
|
|
|
self.lock = Lock() |
|
|
|
self.scripthash_to_address = {} |
|
|
|
# Queues |
|
|
|
self.add_queue = asyncio.Queue() |
|
|
|
self.status_queue = asyncio.Queue() |
|
|
|
|
|
|
|
self.initialized = False |
|
|
|
self.initialize() |
|
|
|
|
|
|
|
def parse_response(self, response): |
|
|
|
if response.get('error'): |
|
|
|
self.print_error("response error:", response) |
|
|
|
return None, None |
|
|
|
return response['params'], response['result'] |
|
|
|
async def send_version(self): |
|
|
|
r = await self.session.send_request('server.version', [ELECTRUM_VERSION, PROTOCOL_VERSION]) |
|
|
|
|
|
|
|
def is_up_to_date(self): |
|
|
|
return (not self.requested_tx and not self.requested_histories |
|
|
|
and not self.requested_addrs) |
|
|
|
|
|
|
|
def release(self): |
|
|
|
self.network.unsubscribe(self.on_address_status) |
|
|
|
|
|
|
|
def add(self, address): |
|
|
|
'''This can be called from the proxy or GUI threads.''' |
|
|
|
with self.lock: |
|
|
|
self.new_addresses.add(address) |
|
|
|
|
|
|
|
def subscribe_to_addresses(self, addresses): |
|
|
|
if addresses: |
|
|
|
self.requested_addrs |= addresses |
|
|
|
self.network.subscribe_to_addresses(addresses, self.on_address_status) |
|
|
|
|
|
|
|
def get_status(self, h): |
|
|
|
if not h: |
|
|
|
return None |
|
|
|
status = '' |
|
|
|
for tx_hash, height in h: |
|
|
|
status += tx_hash + ':%d:' % height |
|
|
|
return bh2u(hashlib.sha256(status.encode('ascii')).digest()) |
|
|
|
|
|
|
|
def on_address_status(self, response): |
|
|
|
if self.wallet.synchronizer is None and self.initialized: |
|
|
|
return # we have been killed, this was just an orphan callback |
|
|
|
params, result = self.parse_response(response) |
|
|
|
if not params: |
|
|
|
return |
|
|
|
addr = params[0] |
|
|
|
return (not self.requested_addrs and not self.requested_histories) |
|
|
|
|
|
|
|
def add(self, addr): |
|
|
|
self.requested_addrs.add(addr) |
|
|
|
self.add_queue.put_nowait(addr) |
|
|
|
|
|
|
|
async def on_address_status(self, addr, status): |
|
|
|
history = self.wallet.history.get(addr, []) |
|
|
|
if self.get_status(history) != result: |
|
|
|
# note that at this point 'result' can be None; |
|
|
|
# if we had a history for addr but now the server is telling us |
|
|
|
# there is no history |
|
|
|
if addr not in self.requested_histories: |
|
|
|
self.requested_histories[addr] = result |
|
|
|
self.network.request_address_history(addr, self.on_address_history) |
|
|
|
# remove addr from list only after it is added to requested_histories |
|
|
|
if addr in self.requested_addrs: # Notifications won't be in |
|
|
|
self.requested_addrs.remove(addr) |
|
|
|
|
|
|
|
def on_address_history(self, response): |
|
|
|
if self.wallet.synchronizer is None and self.initialized: |
|
|
|
return # we have been killed, this was just an orphan callback |
|
|
|
params, result = self.parse_response(response) |
|
|
|
if not params: |
|
|
|
if history_status(history) == status: |
|
|
|
return |
|
|
|
addr = params[0] |
|
|
|
try: |
|
|
|
server_status = self.requested_histories[addr] |
|
|
|
except KeyError: |
|
|
|
# note: server_status can be None even if we asked for the history, |
|
|
|
# so it is not sufficient to test that |
|
|
|
self.print_error("receiving history (unsolicited)", addr, len(result)) |
|
|
|
# note that at this point 'result' can be None; |
|
|
|
# if we had a history for addr but now the server is telling us |
|
|
|
# there is no history |
|
|
|
if addr in self.requested_histories: |
|
|
|
return |
|
|
|
# request address history |
|
|
|
self.requested_histories[addr] = status |
|
|
|
h = address_to_scripthash(addr) |
|
|
|
result = await self.session.send_request("blockchain.scripthash.get_history", [h]) |
|
|
|
self.print_error("receiving history", addr, len(result)) |
|
|
|
hashes = set(map(lambda item: item['tx_hash'], result)) |
|
|
|
hist = list(map(lambda item: (item['tx_hash'], item['height']), result)) |
|
|
|
@ -128,23 +112,44 @@ class Synchronizer(ThreadJob): |
|
|
|
if len(hashes) != len(result): |
|
|
|
self.print_error("error: server history has non-unique txids: %s"% addr) |
|
|
|
# Check that the status corresponds to what was announced |
|
|
|
elif self.get_status(hist) != server_status: |
|
|
|
elif history_status(hist) != status: |
|
|
|
self.print_error("error: status mismatch: %s" % addr) |
|
|
|
else: |
|
|
|
# Store received history |
|
|
|
self.wallet.receive_history_callback(addr, hist, tx_fees) |
|
|
|
# Request transactions we don't have |
|
|
|
self.request_missing_txs(hist) |
|
|
|
# "hist" is a list of [tx_hash, tx_height] lists |
|
|
|
transaction_hashes = [] |
|
|
|
for tx_hash, tx_height in hist: |
|
|
|
if tx_hash in self.requested_tx: |
|
|
|
continue |
|
|
|
if tx_hash in self.wallet.transactions: |
|
|
|
continue |
|
|
|
transaction_hashes.append(tx_hash) |
|
|
|
self.requested_tx[tx_hash] = tx_height |
|
|
|
|
|
|
|
for tx_hash in transaction_hashes: |
|
|
|
await self.get_transaction(tx_hash) |
|
|
|
|
|
|
|
# Remove request; this allows up_to_date to be True |
|
|
|
self.requested_histories.pop(addr) |
|
|
|
|
|
|
|
def on_tx_response(self, response): |
|
|
|
if self.wallet.synchronizer is None and self.initialized: |
|
|
|
return # we have been killed, this was just an orphan callback |
|
|
|
params, result = self.parse_response(response) |
|
|
|
if not params: |
|
|
|
return |
|
|
|
tx_hash = params[0] |
|
|
|
async def request_missing_txs(self, hist): |
|
|
|
# "hist" is a list of [tx_hash, tx_height] lists |
|
|
|
transaction_hashes = [] |
|
|
|
for tx_hash, tx_height in hist: |
|
|
|
if tx_hash in self.requested_tx: |
|
|
|
continue |
|
|
|
if tx_hash in self.wallet.transactions: |
|
|
|
continue |
|
|
|
transaction_hashes.append(tx_hash) |
|
|
|
self.requested_tx[tx_hash] = tx_height |
|
|
|
|
|
|
|
for tx_hash in transaction_hashes: |
|
|
|
await self.get_transaction(tx_hash) |
|
|
|
|
|
|
|
async def get_transaction(self, tx_hash): |
|
|
|
result = await self.session.send_request('blockchain.transaction.get', [tx_hash]) |
|
|
|
tx = Transaction(result) |
|
|
|
try: |
|
|
|
tx.deserialize() |
|
|
|
@ -160,54 +165,44 @@ class Synchronizer(ThreadJob): |
|
|
|
self.print_error("received tx %s height: %d bytes: %d" % |
|
|
|
(tx_hash, tx_height, len(tx.raw))) |
|
|
|
# callbacks |
|
|
|
self.network.trigger_callback('new_transaction', tx) |
|
|
|
if not self.requested_tx: |
|
|
|
self.network.trigger_callback('updated') |
|
|
|
|
|
|
|
def request_missing_txs(self, hist): |
|
|
|
# "hist" is a list of [tx_hash, tx_height] lists |
|
|
|
transaction_hashes = [] |
|
|
|
for tx_hash, tx_height in hist: |
|
|
|
if tx_hash in self.requested_tx: |
|
|
|
continue |
|
|
|
if tx_hash in self.wallet.transactions: |
|
|
|
continue |
|
|
|
transaction_hashes.append(tx_hash) |
|
|
|
self.requested_tx[tx_hash] = tx_height |
|
|
|
|
|
|
|
self.network.get_transactions(transaction_hashes, self.on_tx_response) |
|
|
|
|
|
|
|
def initialize(self): |
|
|
|
'''Check the initial state of the wallet. Subscribe to all its |
|
|
|
addresses, and request any transactions in its address history |
|
|
|
we don't have. |
|
|
|
''' |
|
|
|
for history in self.wallet.history.values(): |
|
|
|
# Old electrum servers returned ['*'] when all history for |
|
|
|
# the address was pruned. This no longer happens but may |
|
|
|
# remain in old wallets. |
|
|
|
if history == ['*']: |
|
|
|
continue |
|
|
|
self.request_missing_txs(history) |
|
|
|
|
|
|
|
if self.requested_tx: |
|
|
|
self.print_error("missing tx", self.requested_tx) |
|
|
|
self.subscribe_to_addresses(set(self.wallet.get_addresses())) |
|
|
|
self.initialized = True |
|
|
|
|
|
|
|
def run(self): |
|
|
|
'''Called from the network proxy thread main loop.''' |
|
|
|
# 1. Create new addresses |
|
|
|
self.wallet.synchronize() |
|
|
|
|
|
|
|
# 2. Subscribe to new addresses |
|
|
|
with self.lock: |
|
|
|
addresses = self.new_addresses |
|
|
|
self.new_addresses = set() |
|
|
|
self.subscribe_to_addresses(addresses) |
|
|
|
|
|
|
|
# 3. Detect if situation has changed |
|
|
|
up_to_date = self.is_up_to_date() |
|
|
|
if up_to_date != self.wallet.is_up_to_date(): |
|
|
|
self.wallet.set_up_to_date(up_to_date) |
|
|
|
self.network.trigger_callback('updated') |
|
|
|
self.wallet.network.trigger_callback('new_transaction', tx) |
|
|
|
|
|
|
|
async def subscribe_to_address(self, addr): |
|
|
|
h = address_to_scripthash(addr) |
|
|
|
self.scripthash_to_address[h] = addr |
|
|
|
status = await self.session.send_request('blockchain.scripthash.subscribe', [h]) |
|
|
|
await self.status_queue.put((h, status)) |
|
|
|
self.requested_addrs.remove(addr) |
|
|
|
|
|
|
|
@aiosafe |
|
|
|
async def send_subscriptions(self): |
|
|
|
async with TaskGroup() as group: |
|
|
|
while True: |
|
|
|
addr = await self.add_queue.get() |
|
|
|
await group.spawn(self.subscribe_to_address(addr)) |
|
|
|
|
|
|
|
@aiosafe |
|
|
|
async def handle_status(self): |
|
|
|
async with TaskGroup() as group: |
|
|
|
while True: |
|
|
|
h, status = await self.status_queue.get() |
|
|
|
addr = self.scripthash_to_address[h] |
|
|
|
await group.spawn(self.on_address_status(addr, status)) |
|
|
|
|
|
|
|
@aiosafe |
|
|
|
async def main(self): |
|
|
|
conn = self.wallet.network.default_server |
|
|
|
host, port, protocol = conn.split(':') |
|
|
|
sslc = ssl.SSLContext(ssl.PROTOCOL_TLS) if protocol == 's' else None |
|
|
|
async with NotificationSession(self.status_queue, host, int(port), ssl=sslc) as session: |
|
|
|
self.session = session |
|
|
|
await self.send_version() |
|
|
|
self.wallet.synchronizer = self |
|
|
|
for addr in self.wallet.get_addresses(): self.add(addr) |
|
|
|
while True: |
|
|
|
await asyncio.sleep(1) |
|
|
|
self.wallet.synchronize() |
|
|
|
up_to_date = self.is_up_to_date() |
|
|
|
if up_to_date != self.wallet.is_up_to_date(): |
|
|
|
self.wallet.set_up_to_date(up_to_date) |
|
|
|
self.wallet.network.trigger_callback('updated') |
|
|
|
|
Janus
7 years ago
SomberNight