import binascii import logging.handlers import mimetypes import os import random import re import subprocess import sys import base58 import requests import simplejson as json from urllib2 import urlopen from datetime import datetime from decimal import Decimal from twisted.web import server from twisted.internet import defer, threads, error, reactor, task from twisted.internet.task import LoopingCall from twisted.python.failure import Failure from jsonschema import ValidationError # TODO: importing this when internet is disabled raises a socket.gaierror from lbryum.version import LBRYUM_VERSION as lbryum_version from lbrynet import __version__ as lbrynet_version from lbrynet import conf, reflector, analytics from lbrynet.conf import LBRYCRD_WALLET, LBRYUM_WALLET, PTC_WALLET from lbrynet.metadata.Fee import FeeValidator from lbrynet.metadata.Metadata import Metadata, verify_name_characters from lbrynet.lbryfile.client.EncryptedFileDownloader import EncryptedFileSaverFactory, EncryptedFileOpenerFactory from lbrynet.lbryfile.client.EncryptedFileOptions import add_lbry_file_to_sd_identifier from lbrynet.lbryfile.EncryptedFileMetadataManager import DBEncryptedFileMetadataManager from lbrynet.lbryfile.EncryptedFileMetadataManager import TempEncryptedFileMetadataManager from lbrynet.lbryfile.StreamDescriptor import EncryptedFileStreamType from lbrynet.lbryfilemanager.EncryptedFileManager import EncryptedFileManager from lbrynet.lbrynet_console.Settings import Settings from lbrynet.lbrynet_daemon.UIManager import UIManager from lbrynet.lbrynet_daemon.Downloader import GetStream from lbrynet.lbrynet_daemon.Publisher import Publisher from lbrynet.lbrynet_daemon.ExchangeRateManager import ExchangeRateManager from lbrynet.lbrynet_daemon.auth.server import AuthJSONRPCServer from lbrynet.core import log_support, utils, Platform from lbrynet.core.StreamDescriptor import StreamDescriptorIdentifier, download_sd_blob, BlobStreamDescriptorReader from lbrynet.core.Session import Session from lbrynet.core.PTCWallet import PTCWallet from lbrynet.core.Wallet import LBRYumWallet from lbrynet.core.looping_call_manager import LoopingCallManager from lbrynet.core.server.BlobRequestHandler import BlobRequestHandlerFactory from lbrynet.core.server.ServerProtocol import ServerProtocolFactory from lbrynet.core.Error import InsufficientFundsError log = logging.getLogger(__name__) INITIALIZING_CODE = 'initializing' LOADING_DB_CODE = 'loading_db' LOADING_wallet_CODE = 'loading_wallet' LOADING_FILE_MANAGER_CODE = 'loading_file_manager' LOADING_SERVER_CODE = 'loading_server' STARTED_CODE = 'started' WAITING_FOR_FIRST_RUN_CREDITS = 'waiting_for_credits' STARTUP_STAGES = [ (INITIALIZING_CODE, 'Initializing...'), (LOADING_DB_CODE, 'Loading databases...'), (LOADING_wallet_CODE, 'Catching up with the blockchain... %s'), (LOADING_FILE_MANAGER_CODE, 'Setting up file manager'), (LOADING_SERVER_CODE, 'Starting lbrynet'), (STARTED_CODE, 'Started lbrynet'), (WAITING_FOR_FIRST_RUN_CREDITS, 'Waiting for first run credits...') ] DOWNLOAD_METADATA_CODE = 'downloading_metadata' DOWNLOAD_TIMEOUT_CODE = 'timeout' DOWNLOAD_RUNNING_CODE = 'running' DOWNLOAD_STOPPED_CODE = 'stopped' STREAM_STAGES = [ (INITIALIZING_CODE, 'Initializing...'), (DOWNLOAD_METADATA_CODE, 'Downloading metadata'), (DOWNLOAD_RUNNING_CODE, 'Started %s, got %s/%s blobs, stream status: %s'), (DOWNLOAD_STOPPED_CODE, 'Paused stream'), (DOWNLOAD_TIMEOUT_CODE, 'Stream timed out') ] CONNECT_CODE_VERSION_CHECK = 'version_check' CONNECT_CODE_NETWORK = 'network_connection' CONNECT_CODE_wallet = 'wallet_catchup_lag' CONNECTION_PROBLEM_CODES = [ (CONNECT_CODE_VERSION_CHECK, "There was a problem checking for updates on github"), (CONNECT_CODE_NETWORK, "Your internet connection appears to have been interrupted"), (CONNECT_CODE_wallet, "Synchronization with the blockchain is lagging... if this continues try restarting LBRY") ] BAD_REQUEST = 400 NOT_FOUND = 404 OK_CODE = 200 PENDING_LBRY_ID = "not set" SHORT_LBRY_ID_LEN = 20 class Checker: """The looping calls the daemon runs""" INTERNET_CONNECTION = 'internet_connection_checker' VERSION = 'version_checker' CONNECTION_PROBLEM = 'connection_problem_checker' PENDING_CLAIM = 'pending_claim_checker' class FileID: """The different ways a file can be identified""" NAME = 'name' SD_HASH = 'sd_hash' FILE_NAME = 'file_name' # TODO add login credentials in a conf file # TODO alert if your copy of a lbry file is out of date with the name record REMOTE_SERVER = "www.lbry.io" class NoValidSearch(Exception): pass class Parameters(object): def __init__(self, **kwargs): self.__dict__.update(kwargs) class CheckInternetConnection(object): def __init__(self, daemon): self.daemon = daemon def __call__(self): self.daemon.connected_to_internet = utils.check_connection() class CheckRemoteVersions(object): def __init__(self, daemon): self.daemon = daemon def __call__(self): d = self._get_lbrynet_version() d.addCallback(lambda _: self._get_lbryum_version()) def _get_lbryum_version(self): try: version = get_lbryum_version_from_github() log.info( "remote lbryum %s > local lbryum %s = %s", version, lbryum_version, utils.version_is_greater_than(version, lbryum_version) ) self.daemon.git_lbryum_version = version return defer.succeed(None) except Exception: log.info("Failed to get lbryum version from git") self.daemon.git_lbryum_version = None return defer.fail(None) def _get_lbrynet_version(self): try: version = get_lbrynet_version_from_github() log.info( "remote lbrynet %s > local lbrynet %s = %s", version, lbrynet_version, utils.version_is_greater_than(version, lbrynet_version) ) self.daemon.git_lbrynet_version = version return defer.succeed(None) except Exception: log.info("Failed to get lbrynet version from git") self.daemon.git_lbrynet_version = None return defer.fail(None) class AlwaysSend(object): def __init__(self, value_generator, *args, **kwargs): self.value_generator = value_generator self.args = args self.kwargs = kwargs def __call__(self): d = defer.maybeDeferred(self.value_generator, *self.args, **self.kwargs) d.addCallback(lambda v: (True, v)) return d def calculate_available_blob_size(blob_manager): d = blob_manager.get_all_verified_blobs() d.addCallback( lambda blobs: defer.DeferredList([blob_manager.get_blob_length(b) for b in blobs])) d.addCallback(lambda blob_lengths: sum(val for success, val in blob_lengths if success)) return d class Daemon(AuthJSONRPCServer): """ LBRYnet daemon, a jsonrpc interface to lbry functions """ def __init__(self, root, analytics_manager): AuthJSONRPCServer.__init__(self, conf.settings.use_auth_http) reactor.addSystemEventTrigger('before', 'shutdown', self._shutdown) self.allowed_during_startup = [ 'is_running', 'is_first_run', 'get_time_behind_blockchain', 'stop', 'daemon_status', 'get_start_notice', 'version' ] last_version = {'last_version': {'lbrynet': lbrynet_version, 'lbryum': lbryum_version}} conf.settings.update(last_version) self.db_dir = conf.settings.data_dir self.download_directory = conf.settings.download_directory self.created_data_dir = False if not os.path.exists(self.db_dir): os.mkdir(self.db_dir) self.created_data_dir = True if conf.settings.BLOBFILES_DIR == "blobfiles": self.blobfile_dir = os.path.join(self.db_dir, "blobfiles") else: log.info("Using non-default blobfiles directory: %s", conf.settings.BLOBFILES_DIR) self.blobfile_dir = conf.settings.BLOBFILES_DIR self.run_on_startup = conf.settings.run_on_startup self.data_rate = conf.settings.data_rate self.max_key_fee = conf.settings.max_key_fee self.max_upload = conf.settings.max_upload self.max_download = conf.settings.max_download self.upload_log = conf.settings.upload_log self.search_timeout = conf.settings.search_timeout self.download_timeout = conf.settings.download_timeout self.max_search_results = conf.settings.max_search_results self.run_reflector_server = conf.settings.run_reflector_server self.wallet_type = conf.settings.wallet self.delete_blobs_on_remove = conf.settings.delete_blobs_on_remove self.peer_port = conf.settings.peer_port self.reflector_port = conf.settings.reflector_port self.dht_node_port = conf.settings.dht_node_port self.use_upnp = conf.settings.use_upnp self.cache_time = conf.settings.cache_time self.startup_scripts = conf.settings.startup_scripts self.startup_status = STARTUP_STAGES[0] self.startup_message = None self.connected_to_internet = True self.connection_problem = None self.git_lbrynet_version = None self.git_lbryum_version = None self.ui_version = None self.platform = None self.first_run = None self.log_file = conf.settings.get_log_filename() self.current_db_revision = 2 self.db_revision_file = conf.settings.get_db_revision_filename() self.session = None self.uploaded_temp_files = [] self._session_id = base58.b58encode(utils.generate_id()) # TODO: this should probably be passed into the daemon, or # possibly have the entire log upload functionality taken out # of the daemon, but I don't want to deal with that now self.log_uploader = log_support.LogUploader.load('lbrynet', self.log_file) self.analytics_manager = analytics_manager self.lbryid = PENDING_LBRY_ID self.daemon_conf = conf.settings.get_conf_filename() self.wallet_user = None self.wallet_password = None self.query_handlers = {} self.waiting_on = {} self.streams = {} self.pending_claims = {} self.name_cache = {} self.exchange_rate_manager = ExchangeRateManager() calls = { Checker.INTERNET_CONNECTION: LoopingCall(CheckInternetConnection(self)), Checker.VERSION: LoopingCall(CheckRemoteVersions(self)), Checker.CONNECTION_PROBLEM: LoopingCall(self._check_connection_problems), Checker.PENDING_CLAIM: LoopingCall(self._check_pending_claims), } self.looping_call_manager = LoopingCallManager(calls) self.sd_identifier = StreamDescriptorIdentifier() self.stream_info_manager = TempEncryptedFileMetadataManager() self.settings = Settings(self.db_dir) self.lbry_ui_manager = UIManager(root) self.blob_request_payment_rate_manager = None self.lbry_file_metadata_manager = None self.lbry_file_manager = None def setup(self): def _log_starting_vals(): log.info("Starting balance: " + str(self.session.wallet.wallet_balance)) return defer.succeed(None) def _announce_startup(): def _wait_for_credits(): if float(self.session.wallet.wallet_balance) == 0.0: self.startup_status = STARTUP_STAGES[6] return reactor.callLater(1, _wait_for_credits) else: return _announce() def _announce(): self.announced_startup = True self.startup_status = STARTUP_STAGES[5] log.info("Started lbrynet-daemon") if len(self.startup_scripts): log.info("Scheduling scripts") reactor.callLater(3, self._run_scripts) if self.first_run: d = self._upload_log(log_type="first_run") elif self.upload_log: d = self._upload_log(exclude_previous=True, log_type="start") else: d = defer.succeed(None) d.addCallback(lambda _: _announce()) return d log.info("Starting lbrynet-daemon") self.looping_call_manager.start(Checker.INTERNET_CONNECTION, 3600) self.looping_call_manager.start(Checker.VERSION, 3600 * 12) self.looping_call_manager.start(Checker.CONNECTION_PROBLEM, 1) self.exchange_rate_manager.start() d = defer.Deferred() if conf.settings.host_ui: self.lbry_ui_manager.update_checker.start(1800, now=False) d.addCallback(lambda _: self.lbry_ui_manager.setup()) d.addCallback(lambda _: self._initial_setup()) d.addCallback(lambda _: threads.deferToThread(self._setup_data_directory)) d.addCallback(lambda _: self._check_db_migration()) d.addCallback(lambda _: self._get_settings()) d.addCallback(lambda _: self._load_caches()) d.addCallback(lambda _: self._set_events()) d.addCallback(lambda _: self._get_session()) d.addCallback(lambda _: self._get_analytics()) d.addCallback(lambda _: add_lbry_file_to_sd_identifier(self.sd_identifier)) d.addCallback(lambda _: self._setup_stream_identifier()) d.addCallback(lambda _: self._setup_lbry_file_manager()) d.addCallback(lambda _: self._setup_query_handlers()) d.addCallback(lambda _: self._setup_server()) d.addCallback(lambda _: _log_starting_vals()) d.addCallback(lambda _: _announce_startup()) d.callback(None) return d def _get_platform(self): if self.platform is None: self.platform = Platform.get_platform() self.platform["ui_version"] = self.lbry_ui_manager.loaded_git_version return self.platform def _initial_setup(self): def _log_platform(): log.info("Platform: %s", json.dumps(self._get_platform())) return defer.succeed(None) d = _log_platform() return d def _load_caches(self): if os.path.isfile(os.path.join(self.db_dir, "stream_info_cache.json")): with open(os.path.join(self.db_dir, "stream_info_cache.json"), "r") as stream_info_cache: self.name_cache = json.loads(stream_info_cache.read()) log.info("Loaded claim info cache") def _set_events(self): context = analytics.make_context(self._get_platform(), self.wallet_type) self._events = analytics.Events(context, base58.b58encode(self.lbryid), self._session_id) def _check_network_connection(self): self.connected_to_internet = utils.check_connection() def _check_lbrynet_connection(self): def _log_success(): log.info("lbrynet connectivity test passed") def _log_failure(): log.info("lbrynet connectivity test failed") wonderfullife_sh = "6f3af0fa3924be98a54766aa2715d22c6c1509c3f7fa32566df4899a41f3530a9f97b2ecb817fa1dcbf1b30553aefaa7" d = download_sd_blob(self.session, wonderfullife_sh, self.session.base_payment_rate_manager) d.addCallbacks(lambda _: _log_success, lambda _: _log_failure) def _check_connection_problems(self): if not self.git_lbrynet_version or not self.git_lbryum_version: self.connection_problem = CONNECTION_PROBLEM_CODES[0] elif self.startup_status[0] == 'loading_wallet': if self.session.wallet.is_lagging: self.connection_problem = CONNECTION_PROBLEM_CODES[2] else: self.connection_problem = None if not self.connected_to_internet: self.connection_problem = CONNECTION_PROBLEM_CODES[1] # claim_out is dictionary containing 'txid' and 'nout' def _add_to_pending_claims(self, name, claim_out): txid = claim_out['txid'] nout = claim_out['nout'] log.info("Adding lbry://%s to pending claims, txid %s nout %d" % (name, txid, nout)) self.pending_claims[name] = (txid, nout) return claim_out def _check_pending_claims(self): # TODO: this was blatantly copied from jsonrpc_start_lbry_file. Be DRY. def _start_file(f): d = self.lbry_file_manager.toggle_lbry_file_running(f) return defer.succeed("Started LBRY file") def _get_and_start_file(name): d = defer.succeed(self.pending_claims.pop(name)) d.addCallback(lambda _: self._get_lbry_file(FileID.NAME, name, return_json=False)) d.addCallback(lambda l: _start_file(l) if l.stopped else "LBRY file was already running") def re_add_to_pending_claims(name): log.warning("Re-add %s to pending claims", name) txid, nout = self.pending_claims.pop(name) claim_out = {'txid':txid, 'nout':nout} self._add_to_pending_claims(name, claim_out) def _process_lbry_file(name, lbry_file): # lbry_file is an instance of ManagedEncryptedFileDownloader or None # TODO: check for sd_hash in addition to txid ready_to_start = ( lbry_file and self.pending_claims[name] == (lbry_file.txid, lbry_file.nout) ) if ready_to_start: _get_and_start_file(name) else: re_add_to_pending_claims(name) for name in self.pending_claims: log.info("Checking if new claim for lbry://%s is confirmed" % name) d = self._resolve_name(name, force_refresh=True) d.addCallback(lambda _: self._get_lbry_file_by_uri(name)) d.addCallbacks( lambda lbry_file: _process_lbry_file(name, lbry_file), lambda _: re_add_to_pending_claims(name) ) def _start_server(self): if self.peer_port is not None: server_factory = ServerProtocolFactory(self.session.rate_limiter, self.query_handlers, self.session.peer_manager) try: self.lbry_server_port = reactor.listenTCP(self.peer_port, server_factory) except error.CannotListenError as e: import traceback log.error("Couldn't bind to port %d. %s", self.peer_port, traceback.format_exc()) raise ValueError("%s lbrynet may already be running on your computer.", str(e)) return defer.succeed(True) def _start_reflector(self): if self.run_reflector_server: log.info("Starting reflector server") if self.reflector_port is not None: reflector_factory = reflector.ServerFactory( self.session.peer_manager, self.session.blob_manager ) try: self.reflector_server_port = reactor.listenTCP(self.reflector_port, reflector_factory) log.info('Started reflector on port %s', self.reflector_port) except error.CannotListenError as e: log.exception("Couldn't bind reflector to port %d", self.reflector_port) raise ValueError("{} lbrynet may already be running on your computer.".format(e)) return defer.succeed(True) def _stop_reflector(self): if self.run_reflector_server: log.info("Stopping reflector server") try: if self.reflector_server_port is not None: self.reflector_server_port, p = None, self.reflector_server_port return defer.maybeDeferred(p.stopListening) except AttributeError: return defer.succeed(True) return defer.succeed(True) def _stop_file_manager(self): if self.lbry_file_manager: self.lbry_file_manager.stop() return defer.succeed(True) def _stop_server(self): try: if self.lbry_server_port is not None: self.lbry_server_port, p = None, self.lbry_server_port log.info('Stop listening to %s', p) return defer.maybeDeferred(p.stopListening) else: return defer.succeed(True) except AttributeError: return defer.succeed(True) def _setup_server(self): def restore_running_status(running): if running is True: d = self._start_server() d.addCallback(lambda _: self._start_reflector()) return defer.succeed(True) self.startup_status = STARTUP_STAGES[4] dl = self.settings.get_server_running_status() dl.addCallback(restore_running_status) return dl def _setup_query_handlers(self): handlers = [ BlobRequestHandlerFactory( self.session.blob_manager, self.session.wallet, self.session.payment_rate_manager, self.analytics_manager.track ), self.session.wallet.get_wallet_info_query_handler_factory(), ] def get_blob_request_handler_factory(rate): self.blob_request_payment_rate_manager = self.session.payment_rate_manager d1 = self.settings.get_server_data_payment_rate() d1.addCallback(get_blob_request_handler_factory) dl = defer.DeferredList([d1]) dl.addCallback(lambda _: self._add_query_handlers(handlers)) return dl def _add_query_handlers(self, query_handlers): def _set_query_handlers(statuses): from future_builtins import zip for handler, (success, status) in zip(query_handlers, statuses): if success is True: self.query_handlers[handler] = status ds = [] for handler in query_handlers: query_id = handler.get_primary_query_identifier() ds.append(self.settings.get_query_handler_status(query_id)) dl = defer.DeferredList(ds) dl.addCallback(_set_query_handlers) return dl def _upload_log(self, log_type=None, exclude_previous=False, force=False): if self.upload_log or force: if self.lbryid is not PENDING_LBRY_ID: id_hash = base58.b58encode(self.lbryid)[:SHORT_LBRY_ID_LEN] else: id_hash = self.lbryid try: self.log_uploader.upload(exclude_previous, self.lbryid, log_type) except requests.RequestException: log.exception('Failed to upload log file') return defer.succeed(None) def _clean_up_temp_files(self): for path in self.uploaded_temp_files: try: log.debug('Removing tmp file: %s', path) os.remove(path) except OSError: pass def _shutdown(self): log.info("Closing lbrynet session") log.info("Status at time of shutdown: " + self.startup_status[0]) self.looping_call_manager.shutdown() if self.analytics_manager: self.analytics_manager.shutdown() if self.lbry_ui_manager.update_checker.running: self.lbry_ui_manager.update_checker.stop() self._clean_up_temp_files() try: d = self._upload_log( log_type="close", exclude_previous=False if self.first_run else True) except Exception: log.warn('Failed to upload log', exc_info=True) d = defer.succeed(None) d.addCallback(lambda _: self._stop_server()) d.addErrback(log_support.failure, log, 'Failure while shutting down: %s') d.addCallback(lambda _: self._stop_reflector()) d.addErrback(log_support.failure, log, 'Failure while shutting down: %s') d.addCallback(lambda _: self._stop_file_manager()) d.addErrback(log_support.failure, log, 'Failure while shutting down: %s') if self.session is not None: d.addCallback(lambda _: self.session.shut_down()) d.addErrback(log_support.failure, log, 'Failure while shutting down: %s') return d def _update_settings(self, settings): setting_types = { 'run_on_startup': bool, 'data_rate': float, 'max_key_fee': float, 'download_directory': str, 'max_upload': float, 'max_download': float, 'upload_log': bool, 'download_timeout': int, 'search_timeout': float, 'cache_time': int } for key, setting_type in setting_types.iteritems(): if key in settings: if isinstance(settings[key], setting_type): conf.settings.update({key: settings[key]}) elif key == "max_key_fee" and isinstance(FeeValidator(settings[key]).amount, setting_type): conf.settings.update({key: settings[key]}) else: try: converted = setting_type(settings[key]) conf.settings.update({key: converted}) except Exception as err: log.warning(err.message) log.warning("error converting setting '%s' to type %s", key, setting_type) conf.save_settings() self.run_on_startup = conf.settings.run_on_startup self.data_rate = conf.settings.data_rate self.max_key_fee = conf.settings.max_key_fee self.download_directory = conf.settings.download_directory self.max_upload = conf.settings.max_upload self.max_download = conf.settings.max_download self.upload_log = conf.settings.upload_log self.download_timeout = conf.settings.download_timeout self.search_timeout = conf.settings.search_timeout self.cache_time = conf.settings.cache_time return defer.succeed(True) def _write_db_revision_file(self, version_num): with open(self.db_revision_file, mode='w') as db_revision: db_revision.write(str(version_num)) def _setup_data_directory(self): old_revision = 1 self.startup_status = STARTUP_STAGES[1] log.info("Loading databases...") if self.created_data_dir: self._write_db_revision_file(self.current_db_revision) log.debug("Created the db revision file: %s", self.db_revision_file) if not os.path.exists(self.blobfile_dir): os.mkdir(self.blobfile_dir) log.debug("Created the blobfile directory: %s", str(self.blobfile_dir)) if not os.path.exists(self.db_revision_file): log.warning("db_revision file not found. Creating it") self._write_db_revision_file(old_revision) def _check_db_migration(self): old_revision = 1 if os.path.exists(self.db_revision_file): old_revision = int(open(self.db_revision_file).read().strip()) if old_revision > self.current_db_revision: return defer.fail(Exception('This version of lbrynet is not compatible with the database')) def update_version_file_and_print_success(): self._write_db_revision_file(self.current_db_revision) log.info("Finished upgrading the databases.") if old_revision < self.current_db_revision: from lbrynet.db_migrator import dbmigrator log.info("Upgrading your databases...") d = threads.deferToThread(dbmigrator.migrate_db, self.db_dir, old_revision, self.current_db_revision) d.addCallback(lambda _: update_version_file_and_print_success()) return d return defer.succeed(True) def _get_settings(self): d = self.settings.start() d.addCallback(lambda _: self.settings.get_lbryid()) d.addCallback(self._set_lbryid) d.addCallback(lambda _: self._modify_loggly_formatter()) return d def _set_lbryid(self, lbryid): if lbryid is PENDING_LBRY_ID or lbryid is None: return self._make_set_and_save_lbryid() else: log.info("LBRY ID: " + base58.b58encode(lbryid)) self.lbryid = lbryid def _make_set_and_save_lbryid(self): self.lbryid = utils.generate_id() log.info("Generated new LBRY ID: " + base58.b58encode(self.lbryid)) d = self.settings.save_lbryid(self.lbryid) return d def _modify_loggly_formatter(self): log_support.configure_loggly_handler( lbry_id=base58.b58encode(self.lbryid), session_id=self._session_id ) def _setup_lbry_file_manager(self): self.startup_status = STARTUP_STAGES[3] self.lbry_file_metadata_manager = DBEncryptedFileMetadataManager(self.db_dir) d = self.lbry_file_metadata_manager.setup() def set_lbry_file_manager(): self.lbry_file_manager = EncryptedFileManager( self.session, self.lbry_file_metadata_manager, self.sd_identifier, download_directory=self.download_directory) return self.lbry_file_manager.setup() d.addCallback(lambda _: set_lbry_file_manager()) return d def _get_analytics(self): context = analytics.make_context(self._get_platform(), self.wallet_type) events_generator = analytics.Events( context, base58.b58encode(self.lbryid), self._session_id) if self.analytics_manager is None: self.analytics_manager = analytics.Manager.new_instance( events=events_generator ) else: self.analytics_manager.update_events_generator(events_generator) if not self.analytics_manager.is_started: self.analytics_manager.start() self.analytics_manager.register_repeating_metric( analytics.BLOB_BYTES_AVAILABLE, AlwaysSend(calculate_available_blob_size, self.session.blob_manager), frequency=300 ) def _get_session(self): def get_default_data_rate(): d = self.settings.get_default_data_payment_rate() d.addCallback(lambda rate: {"default_data_payment_rate": rate if rate is not None else conf.settings.data_rate}) return d def get_wallet(): if self.wallet_type == LBRYCRD_WALLET: raise ValueError('LBRYcrd Wallet is no longer supported') elif self.wallet_type == LBRYUM_WALLET: log.info("Using lbryum wallet") config = {'auto_connect': True} if conf.settings.lbryum_wallet_dir: config['lbryum_path'] = conf.settings.lbryum_wallet_dir d = defer.succeed(LBRYumWallet(self.db_dir, config)) elif self.wallet_type == PTC_WALLET: log.info("Using PTC wallet") d = defer.succeed(PTCWallet(self.db_dir)) else: raise ValueError('Wallet Type {} is not valid'.format(self.wallet_type)) d.addCallback(lambda w: {"wallet": w}) return d d1 = get_default_data_rate() d2 = get_wallet() def combine_results(results): r = {} for success, result in results: if success is True: r.update(result) return r def create_session(results): self.session = Session(results['default_data_payment_rate'], db_dir=self.db_dir, lbryid=self.lbryid, blob_dir=self.blobfile_dir, dht_node_port=self.dht_node_port, known_dht_nodes=conf.settings.known_dht_nodes, peer_port=self.peer_port, use_upnp=self.use_upnp, wallet=results['wallet'], is_generous=conf.settings.is_generous_host) self.startup_status = STARTUP_STAGES[2] dl = defer.DeferredList([d1, d2], fireOnOneErrback=True) dl.addCallback(combine_results) dl.addCallback(create_session) dl.addCallback(lambda _: self.session.setup()) return dl def _setup_stream_identifier(self): file_saver_factory = EncryptedFileSaverFactory(self.session.peer_finder, self.session.rate_limiter, self.session.blob_manager, self.stream_info_manager, self.session.wallet, self.download_directory) self.sd_identifier.add_stream_downloader_factory(EncryptedFileStreamType, file_saver_factory) file_opener_factory = EncryptedFileOpenerFactory(self.session.peer_finder, self.session.rate_limiter, self.session.blob_manager, self.stream_info_manager, self.session.wallet) self.sd_identifier.add_stream_downloader_factory(EncryptedFileStreamType, file_opener_factory) return defer.succeed(None) def _download_sd_blob(self, sd_hash, timeout=conf.settings.sd_download_timeout): def cb(result): if not r.called: r.callback(result) def eb(): if not r.called: self.analytics_manager.send_error("sd blob download timed out", sd_hash) r.errback(Exception("sd timeout")) r = defer.Deferred(None) reactor.callLater(timeout, eb) d = download_sd_blob(self.session, sd_hash, self.session.payment_rate_manager) d.addErrback(lambda err: self.analytics_manager.send_error( "error downloading sd blob: " + err, sd_hash)) d.addCallback(BlobStreamDescriptorReader) d.addCallback(lambda blob: blob.get_info()) d.addCallback(cb) return r def _download_name(self, name, timeout=conf.settings.download_timeout, download_directory=None, file_name=None, stream_info=None, wait_for_write=True): """ Add a lbry file to the file manager, start the download, and return the new lbry file. If it already exists in the file manager, return the existing lbry file """ self.analytics_manager.send_download_started(name, stream_info) helper = _DownloadNameHelper( self, name, timeout, download_directory, file_name, wait_for_write) if not stream_info: self.waiting_on[name] = True d = self._resolve_name(name) else: d = defer.succeed(stream_info) d.addCallback(helper._setup_stream) d.addCallback(helper.wait_or_get_stream) if not stream_info: d.addCallback(helper._remove_from_wait) return d def add_stream(self, name, timeout, download_directory, file_name, stream_info): """Makes, adds and starts a stream""" self.streams[name] = GetStream(self.sd_identifier, self.session, self.session.wallet, self.lbry_file_manager, self.exchange_rate_manager, max_key_fee=self.max_key_fee, data_rate=self.data_rate, timeout=timeout, download_directory=download_directory, file_name=file_name) d = self.streams[name].start(stream_info, name) return d def _get_long_count_timestamp(self): return int((datetime.utcnow() - (datetime(year=2012, month=12, day=21))).total_seconds()) def _update_claim_cache(self): f = open(os.path.join(self.db_dir, "stream_info_cache.json"), "w") f.write(json.dumps(self.name_cache)) f.close() return defer.succeed(True) def _resolve_name(self, name, force_refresh=False): """Resolves a name. Checks the cache first before going out to the blockchain. Args: name: the lbry:// to resolve force_refresh: if True, always go out to the blockchain to resolve. """ if name.startswith('lbry://'): raise ValueError('name {} should not start with lbry://'.format(name)) helper = _ResolveNameHelper(self, name, force_refresh) return helper.get_deferred() def _delete_lbry_file(self, lbry_file, delete_file=True): d = self.lbry_file_manager.delete_lbry_file(lbry_file) def finish_deletion(lbry_file): d = lbry_file.delete_data() d.addCallback(lambda _: _delete_stream_data(lbry_file)) return d def _delete_stream_data(lbry_file): s_h = lbry_file.stream_hash d = self.lbry_file_manager.get_count_for_stream_hash(s_h) # TODO: could possibly be a timing issue here d.addCallback(lambda c: self.stream_info_manager.delete_stream(s_h) if c == 0 else True) if delete_file: d.addCallback(lambda _: os.remove(os.path.join(self.download_directory, lbry_file.file_name)) if os.path.isfile(os.path.join(self.download_directory, lbry_file.file_name)) else defer.succeed(None)) return d d.addCallback(lambda _: finish_deletion(lbry_file)) d.addCallback(lambda _: log.info("Delete lbry file")) return d def _get_or_download_sd_blob(self, blob, sd_hash): if blob: return self.session.blob_manager.get_blob(blob[0], True) def _check_est(downloader): if downloader.result is not None: downloader.cancel() d = defer.succeed(None) reactor.callLater(self.search_timeout, _check_est, d) d.addCallback(lambda _: download_sd_blob(self.session, sd_hash, self.blob_request_payment_rate_manager)) return d def get_or_download_sd_blob(self, sd_hash): """ Return previously downloaded sd blob if already in the blob manager, otherwise download and return it """ d = self.session.blob_manager.completed_blobs([sd_hash]) d.addCallback(self._get_or_download_sd_blob, sd_hash) return d def get_size_from_sd_blob(self, sd_blob): """ Get total stream size in bytes from a sd blob """ d = self.sd_identifier.get_metadata_for_sd_blob(sd_blob) d.addCallback(lambda metadata: metadata.validator.info_to_show()) d.addCallback(lambda info: int(dict(info)['stream_size'])) return d def _get_est_cost_from_stream_size(self, size): """ Calculate estimated LBC cost for a stream given its size in bytes """ if self.session.payment_rate_manager.generous: return 0.0 return size / (10**6) * conf.settings.data_rate def get_est_cost_using_known_size(self, name, size): """ Calculate estimated LBC cost for a stream given its size in bytes """ cost = self._get_est_cost_from_stream_size(size) d = self._resolve_name(name) d.addCallback(lambda metadata: self._add_key_fee_to_est_data_cost(metadata, cost)) return d def get_est_cost_from_sd_hash(self, sd_hash): """ Get estimated cost from a sd hash """ d = self.get_or_download_sd_blob(sd_hash) d.addCallback(self.get_size_from_sd_blob) d.addCallback(self._get_est_cost_from_stream_size) return d def _get_est_cost_from_metadata(self, metadata, name): d = self.get_est_cost_from_sd_hash(metadata['sources']['lbry_sd_hash']) def _handle_err(err): if isinstance(err, Failure): log.warning("Timeout getting blob for cost est for lbry://%s, using only key fee", name) return 0.0 raise err d.addErrback(_handle_err) d.addCallback(lambda data_cost: self._add_key_fee_to_est_data_cost(metadata, data_cost)) return d def _add_key_fee_to_est_data_cost(self, metadata, data_cost): fee = self.exchange_rate_manager.to_lbc(metadata.get('fee', None)) fee_amount = 0.0 if fee is None else fee.amount return data_cost + fee_amount def get_est_cost_from_name(self, name): """ Resolve a name and return the estimated stream cost """ d = self._resolve_name(name) d.addCallback(self._get_est_cost_from_metadata, name) return d def get_est_cost(self, name, size=None): """ Get a cost estimate for a lbry stream, if size is not provided the sd blob will be downloaded to determine the stream size """ if size is not None: return self.get_est_cost_using_known_size(name, size) return self.get_est_cost_from_name(name) def _get_lbry_file_by_uri(self, name): def _get_file(stream_info): sd = stream_info['sources']['lbry_sd_hash'] for l in self.lbry_file_manager.lbry_files: if l.sd_hash == sd: return defer.succeed(l) return defer.succeed(None) d = self._resolve_name(name) d.addCallback(_get_file) return d def _get_lbry_file_by_sd_hash(self, sd_hash): for l in self.lbry_file_manager.lbry_files: if l.sd_hash == sd_hash: return defer.succeed(l) return defer.succeed(None) def _get_lbry_file_by_file_name(self, file_name): for l in self.lbry_file_manager.lbry_files: if l.file_name == file_name: return defer.succeed(l) return defer.succeed(None) def _get_lbry_file(self, search_by, val, return_json=True): return _GetFileHelper(self, search_by, val, return_json).retrieve_file() def _get_lbry_files(self): d = defer.DeferredList([ self._get_lbry_file(FileID.SD_HASH, l.sd_hash) for l in self.lbry_file_manager.lbry_files ]) return d def _reflect(self, lbry_file): if not lbry_file: return defer.fail(Exception("no lbry file given to reflect")) stream_hash = lbry_file.stream_hash if stream_hash is None: return defer.fail(Exception("no stream hash")) log.info("Reflecting stream: %s" % stream_hash) factory = reflector.ClientFactory( self.session.blob_manager, self.lbry_file_manager.stream_info_manager, stream_hash ) return run_reflector_factory(factory) def _reflect_blobs(self, blob_hashes): if not blob_hashes: return defer.fail(Exception("no lbry file given to reflect")) log.info("Reflecting %i blobs" % len(blob_hashes)) factory = reflector.BlobClientFactory( self.session.blob_manager, blob_hashes ) return run_reflector_factory(factory) def _run_scripts(self): if len([k for k in self.startup_scripts if 'run_once' in k.keys()]): log.info("Removing one time startup scripts") remaining_scripts = [s for s in self.startup_scripts if 'run_once' not in s.keys()] startup_scripts = self.startup_scripts self.startup_scripts = conf.settings.startup_scripts = remaining_scripts conf.save_settings() for script in startup_scripts: if script['script_name'] == 'migrateto025': log.info("Running migrator to 0.2.5") from lbrynet.lbrynet_daemon.daemon_scripts.migrateto025 import run as run_migrate run_migrate(self) if script['script_name'] == 'Autofetcher': log.info("Starting autofetcher script") from lbrynet.lbrynet_daemon.daemon_scripts.Autofetcher import run as run_autofetcher run_autofetcher(self) return defer.succeed(None) def jsonrpc_is_running(self): """ Check if lbrynet daemon is running Args: None Returns: true if daemon completed startup, otherwise false """ log.info("is_running: " + str(self.announced_startup)) if self.announced_startup: return self._render_response(True, OK_CODE) else: return self._render_response(False, OK_CODE) def jsonrpc_daemon_status(self): """ Get lbrynet daemon status information Args: None Returns: 'message': startup status message 'code': status_code 'progress': progress, only used in loading_wallet 'is_lagging': flag set to indicate lag, if set message will contain relevant message """ r = {'code': self.startup_status[0], 'message': self.startup_status[1], 'progress': None, 'is_lagging': None, 'problem_code': None} if self.connection_problem: r['problem_code'] = self.connection_problem[0] r['message'] = self.connection_problem[1] r['is_lagging'] = True elif self.startup_status[0] == LOADING_wallet_CODE: if self.wallet_type == LBRYUM_WALLET: if self.session.wallet.blocks_behind_alert != 0: r['message'] %= str(self.session.wallet.blocks_behind_alert) + " blocks behind" r['progress'] = self.session.wallet.catchup_progress else: r['message'] = "Catching up with the blockchain" r['progress'] = 0 else: r['message'] = "Catching up with the blockchain" r['progress'] = 0 return self._render_response(r, OK_CODE) def jsonrpc_is_first_run(self): """ Check if this is the first time lbrynet daemon has been run Args: None Returns: True if first run, otherwise False """ log.info("Check if is first run") try: d = self.session.wallet.is_first_run() except: d = defer.fail(None) d.addCallbacks( lambda r: self._render_response(r, OK_CODE), lambda _: self._render_response(None, OK_CODE)) return d def jsonrpc_get_start_notice(self): """ Get special message to be displayed at startup Args: None Returns: Startup message, such as first run notification """ log.info("Get startup notice") if self.first_run and not self.session.wallet.wallet_balance: return self._render_response(self.startup_message, OK_CODE) elif self.first_run: return self._render_response(None, OK_CODE) else: self._render_response(self.startup_message, OK_CODE) def jsonrpc_version(self): """ Get lbry version information Args: None Returns: "platform": platform string "os_release": os release string "os_system": os name "lbrynet_version: ": lbrynet_version, "lbryum_version: ": lbryum_version, "ui_version": commit hash of ui version being used "remote_lbrynet": most recent lbrynet version available from github "remote_lbryum": most recent lbryum version available from github """ platform_info = self._get_platform() try: lbrynet_update_available = utils.version_is_greater_than( self.git_lbrynet_version, lbrynet_version) except AttributeError: lbrynet_update_available = False try: lbryum_update_available = utils.version_is_greater_than( self.git_lbryum_version, lbryum_version) except AttributeError: lbryum_update_available = False msg = { 'platform': platform_info['platform'], 'os_release': platform_info['os_release'], 'os_system': platform_info['os_system'], 'lbrynet_version': lbrynet_version, 'lbryum_version': lbryum_version, 'ui_version': self.ui_version, 'remote_lbrynet': self.git_lbrynet_version, 'remote_lbryum': self.git_lbryum_version, 'lbrynet_update_available': lbrynet_update_available, 'lbryum_update_available': lbryum_update_available } log.info("Get version info: " + json.dumps(msg)) return self._render_response(msg, OK_CODE) def jsonrpc_get_lbry_session_info(self): """ Get information about the current lbrynet session Args: None Returns: 'lbry_id': string, 'managed_blobs': int, number of completed blobs in the blob manager, 'managed_streams': int, number of lbry files in the file manager """ d = self.session.blob_manager.get_all_verified_blobs() def _prepare_message(blobs): msg = { 'lbry_id': base58.b58encode(self.lbryid)[:SHORT_LBRY_ID_LEN], 'managed_blobs': len(blobs), 'managed_streams': len(self.lbry_file_manager.lbry_files), } return msg d.addCallback(_prepare_message) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d def jsonrpc_get_settings(self): """ Get lbrynet daemon settings Args: None Returns: 'run_on_startup': bool, 'data_rate': float, 'max_key_fee': float, 'download_directory': string, 'max_upload': float, 0.0 for unlimited 'max_download': float, 0.0 for unlimited 'upload_log': bool, 'search_timeout': float, 'download_timeout': int 'max_search_results': int, 'wallet_type': string, 'delete_blobs_on_remove': bool, 'peer_port': int, 'dht_node_port': int, 'use_upnp': bool, """ log.info("Get daemon settings") return self._render_response(conf.settings.get_dict(), OK_CODE) @AuthJSONRPCServer.auth_required def jsonrpc_set_settings(self, p): """ Set lbrynet daemon settings Args: 'run_on_startup': bool, 'data_rate': float, 'max_key_fee': float, 'download_directory': string, 'max_upload': float, 0.0 for unlimited 'max_download': float, 0.0 for unlimited 'upload_log': bool, 'download_timeout': int Returns: settings dict """ def _log_settings_change(): log.info("Set daemon settings to " + json.dumps(conf.settings.get_adjustable_settings_dict())) d = self._update_settings(p) d.addErrback(lambda err: log.info(err.getTraceback())) d.addCallback(lambda _: _log_settings_change()) d.addCallback(lambda _: self._render_response(conf.settings.get_adjustable_settings_dict(), OK_CODE)) return d def jsonrpc_help(self, p=None): """ Function to retrieve docstring for API function Args: optional 'function': function to retrieve documentation for optional 'callable_during_startup': Returns: if given a function, returns given documentation if given callable_during_startup flag, returns list of functions callable during the startup sequence if no params are given, returns the list of callable functions """ if not p: return self._render_response(self.callable_methods.keys(), OK_CODE) elif 'callable_during_start' in p.keys(): return self._render_response(self.allowed_during_startup, OK_CODE) elif 'function' in p.keys(): func_path = p['function'] function = self.callable_methods.get(func_path) return self._render_response(function.__doc__, OK_CODE) else: return self._render_response(self.jsonrpc_help.__doc__, OK_CODE) def jsonrpc_get_balance(self): """ Get balance Args: None Returns: balance, float """ log.info("Get balance") return self._render_response(float(self.session.wallet.wallet_balance), OK_CODE) def jsonrpc_stop(self): """ Stop lbrynet-daemon Args: None Returns: shutdown message """ def _disp_shutdown(): log.info("Shutting down lbrynet daemon") d = self._shutdown() d.addCallback(lambda _: _disp_shutdown()) d.addCallback(lambda _: reactor.callLater(0.0, reactor.stop)) return self._render_response("Shutting down", OK_CODE) def jsonrpc_get_lbry_files(self): """ Get LBRY files Args: None Returns: List of lbry files: 'completed': bool 'file_name': string 'key': hex string 'points_paid': float 'stopped': bool 'stream_hash': base 58 string 'stream_name': string 'suggested_file_name': string 'upload_allowed': bool 'sd_hash': string """ d = self._get_lbry_files() d.addCallback(lambda r: self._render_response([d[1] for d in r], OK_CODE)) return d def jsonrpc_get_lbry_file(self, p): """Get lbry file Args: 'name': get file by lbry uri, 'sd_hash': get file by the hash in the name claim, 'file_name': get file by its name in the downloads folder, Returns: 'completed': bool 'file_name': string 'key': hex string 'points_paid': float 'stopped': bool 'stream_hash': base 58 string 'stream_name': string 'suggested_file_name': string 'upload_allowed': bool 'sd_hash': string """ d = self._get_deferred_for_lbry_file(p) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d def _get_deferred_for_lbry_file(self, p): try: searchtype, value = get_lbry_file_search_value(p) except NoValidSearch: return defer.fail() else: return self._get_lbry_file(searchtype, value) def jsonrpc_resolve_name(self, p): """ Resolve stream info from a LBRY uri Args: 'name': name to look up, string, do not include lbry:// prefix Returns: metadata from name claim """ force = p.get('force', False) name = p.get(FileID.NAME) if not name: return self._render_response(None, BAD_REQUEST) d = self._resolve_name(name, force_refresh=force) d.addCallbacks( lambda info: self._render_response(info, OK_CODE), errback=handle_failure, errbackArgs=('Failed to resolve name: %s',) ) return d @AuthJSONRPCServer.auth_required def jsonrpc_get_my_claim(self, p): """ Return existing claim for a given name Args: 'name': name to look up Returns: claim info, False if no such claim exists """ name = p[FileID.NAME] d = self.session.wallet.get_my_claim(name) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d def jsonrpc_get_claim_info(self, p): """ Resolve claim info from a LBRY uri Args: 'name': name to look up, string, do not include lbry:// prefix 'txid': optional, if specified, look for claim with this txid 'nout': optional, if specified, look for claim with this nout Returns: txid, amount, value, n, height """ def _convert_amount_to_float(r): if not r: return False else: r['amount'] = float(r['amount']) / 10**8 return r name = p[FileID.NAME] txid = p.get('txid', None) nout = p.get('nout', None) d = self.session.wallet.get_claim_info(name, txid, nout) d.addCallback(_convert_amount_to_float) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d def _process_get_parameters(self, p): """Extract info from input parameters and fill in default values for `get` call.""" # TODO: this process can be abstracted s.t. each method # can spec what parameters it expects and how to set default values timeout = p.get('timeout', self.download_timeout) download_directory = p.get('download_directory', self.download_directory) file_name = p.get(FileID.FILE_NAME) stream_info = p.get('stream_info') sd_hash = get_sd_hash(stream_info) wait_for_write = p.get('wait_for_write', True) name = p.get(FileID.NAME) return Parameters( timeout=timeout, download_directory=download_directory, file_name=file_name, stream_info=stream_info, sd_hash=sd_hash, wait_for_write=wait_for_write, name=name ) @AuthJSONRPCServer.auth_required def jsonrpc_get(self, p): """Download stream from a LBRY uri. Args: 'name': name to download, string 'download_directory': optional, path to directory where file will be saved, string 'file_name': optional, a user specified name for the downloaded file 'stream_info': optional, specified stream info overrides name 'timeout': optional 'wait_for_write': optional, defaults to True Returns: 'stream_hash': hex string 'path': path of download """ params = self._process_get_parameters(p) if not params.name: return server.failure if params.name in self.waiting_on: return server.failure d = self._download_name(name=params.name, timeout=params.timeout, download_directory=params.download_directory, stream_info=params.stream_info, file_name=params.file_name, wait_for_write=params.wait_for_write) # TODO: downloading can timeout. Not sure what to do when that happens d.addCallbacks( get_output_callback(params), lambda err: str(err)) d.addCallback(lambda message: self._render_response(message, OK_CODE)) return d @AuthJSONRPCServer.auth_required def jsonrpc_stop_lbry_file(self, p): """ Stop lbry file Args: 'name': stop file by lbry uri, 'sd_hash': stop file by the hash in the name claim, 'file_name': stop file by its name in the downloads folder, Returns: confirmation message """ def _stop_file(f): if f.stopped: return "LBRY file wasn't running" else: d = self.lbry_file_manager.toggle_lbry_file_running(f) d.addCallback(lambda _: "Stopped LBRY file") return d try: searchtype, value = get_lbry_file_search_value(p) except NoValidSearch: d = defer.fail() else: d = self._get_lbry_file(searchtype, value, return_json=False) d.addCallback(_stop_file) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d @AuthJSONRPCServer.auth_required def jsonrpc_start_lbry_file(self, p): """ Stop lbry file Args: 'name': stop file by lbry uri, 'sd_hash': stop file by the hash in the name claim, 'file_name': stop file by its name in the downloads folder, Returns: confirmation message """ def _start_file(f): if f.stopped: d = self.lbry_file_manager.toggle_lbry_file_running(f) return defer.succeed("Started LBRY file") else: return "LBRY file was already running" try: searchtype, value = get_lbry_file_search_value(p) except NoValidSearch: d = defer.fail() else: d = self._get_lbry_file(searchtype, value, return_json=False) d.addCallback(_start_file) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d def jsonrpc_get_est_cost(self, p): """ Get estimated cost for a lbry stream Args: 'name': lbry uri 'size': stream size, in bytes. if provided an sd blob won't be downloaded. Returns: estimated cost """ size = p.get('size', None) name = p.get(FileID.NAME, None) d = self.get_est_cost(name, size) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d @AuthJSONRPCServer.auth_required def jsonrpc_delete_lbry_file(self, p): """ Delete a lbry file Args: 'file_name': downloaded file name, string Returns: confirmation message """ delete_file = p.get('delete_target_file', True) def _delete_file(f): if not f: return False file_name = f.file_name d = self._delete_lbry_file(f, delete_file=delete_file) d.addCallback(lambda _: "Deleted LBRY file" + file_name) return d try: searchtype, value = get_lbry_file_search_value(p) except NoValidSearch: d = defer.fail() else: d = self._get_lbry_file(searchtype, value, return_json=False) d.addCallback(_delete_file) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d @AuthJSONRPCServer.auth_required def jsonrpc_publish(self, p): """ Make a new name claim and publish associated data to lbrynet Args: 'name': name to be claimed, string 'file_path': path to file to be associated with name, string 'bid': amount of credits to commit in this claim, float 'metadata': metadata dictionary optional 'fee' Returns: 'success' : True if claim was succesful , False otherwise 'reason' : if not succesful, give reason 'txid' : txid of resulting transaction if succesful 'nout' : nout of the resulting support claim if succesful 'fee' : fee paid for the claim transaction if succesful 'claimid' : claimid of the resulting transaction """ def _set_address(address, currency, m): log.info("Generated new address for key fee: " + str(address)) m['fee'][currency]['address'] = address return m def _reflect_if_possible(sd_hash, claim_out): d = self._get_lbry_file(FileID.SD_HASH, sd_hash, return_json=False) d.addCallback(self._reflect) d.addCallback(lambda _: claim_out) return d name = p[FileID.NAME] log.info("Publish: %s", p) verify_name_characters(name) bid = p['bid'] if bid <= 0.0: return defer.fail(Exception("Invalid bid")) try: metadata = Metadata(p['metadata']) make_lbry_file = False sd_hash = metadata['sources']['lbry_sd_hash'] log.info("Update publish for %s using existing stream", name) except ValidationError: make_lbry_file = True sd_hash = None metadata = p['metadata'] file_path = p['file_path'] if not file_path: raise Exception("No file given to publish") if not os.path.isfile(file_path): raise Exception("Specified file for publish doesnt exist: %s" % file_path) self.looping_call_manager.start(Checker.PENDING_CLAIM, 30) d = self._resolve_name(name, force_refresh=True) d.addErrback(lambda _: None) if 'fee' in p: metadata['fee'] = p['fee'] assert len(metadata['fee']) == 1, "Too many fees" for c in metadata['fee']: if 'address' not in metadata['fee'][c]: d.addCallback(lambda _: self.session.wallet.get_new_address()) d.addCallback(lambda addr: _set_address(addr, c, metadata)) else: d.addCallback(lambda _: metadata) if make_lbry_file: pub = Publisher(self.session, self.lbry_file_manager, self.session.wallet) d.addCallback(lambda meta: pub.start(name, file_path, bid, meta)) else: d.addCallback(lambda meta: self.session.wallet.claim_name(name, bid, meta)) if sd_hash: d.addCallback(lambda claim_out: _reflect_if_possible(sd_hash, claim_out)) d.addCallback(lambda claim_out: self._add_to_pending_claims(name, claim_out)) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d @AuthJSONRPCServer.auth_required def jsonrpc_abandon_claim(self, p): """ Abandon a name and reclaim credits from the claim Args: 'txid': txid of claim, string 'nout': nout of claim, integer Return: success : True if succesful , False otherwise reason : if not succesful, give reason txid : txid of resulting transaction if succesful fee : fee paid for the transaction if succesful """ if 'txid' in p.keys() and 'nout' in p.keys(): txid = p['txid'] nout = p['nout'] else: return server.failure def _disp(x): log.info("Abandoned name claim tx " + str(x)) return self._render_response(x, OK_CODE) d = defer.Deferred() d.addCallback(lambda _: self.session.wallet.abandon_claim(txid, nout)) d.addCallback(_disp) d.callback(None) return d @AuthJSONRPCServer.auth_required def jsonrpc_abandon_name(self, p): """ DEPRECIATED, use abandon_claim Args: 'txid': txid of claim, string Return: txid """ return self.jsonrpc_abandon_claim(p) @AuthJSONRPCServer.auth_required def jsonrpc_support_claim(self, p): """ Support a name claim Args: 'name': name 'claim_id': claim id of claim to support 'amount': amount to support by Return: success : True if succesful , False otherwise reason : if not succesful, give reason txid : txid of resulting transaction if succesful nout : nout of the resulting support claim if succesful fee : fee paid for the transaction if succesful """ name = p[FileID.NAME] claim_id = p['claim_id'] amount = p['amount'] d = self.session.wallet.support_claim(name, claim_id, amount) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d @AuthJSONRPCServer.auth_required def jsonrpc_get_name_claims(self): """ Get my name claims Args: None Returns list of name claims """ def _clean(claims): for c in claims: for k in c.keys(): if isinstance(c[k], Decimal): c[k] = float(c[k]) return defer.succeed(claims) d = self.session.wallet.get_name_claims() d.addCallback(_clean) d.addCallback(lambda claims: self._render_response(claims, OK_CODE)) return d def jsonrpc_get_claims_for_name(self, p): """ Get claims for a name Args: 'name': name Returns list of name claims """ name = p[FileID.NAME] d = self.session.wallet.get_claims_for_name(name) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d @AuthJSONRPCServer.auth_required def jsonrpc_get_transaction_history(self): """ Get transaction history Args: None Returns: list of transactions """ d = self.session.wallet.get_history() d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d def jsonrpc_get_transaction(self, p): """ Get a decoded transaction from a txid Args: txid: txid hex string Returns: JSON formatted transaction """ txid = p['txid'] d = self.session.wallet.get_transaction(txid) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d @AuthJSONRPCServer.auth_required def jsonrpc_address_is_mine(self, p): """ Checks if an address is associated with the current wallet. Args: address: string Returns: is_mine: bool """ address = p['address'] d = self.session.wallet.address_is_mine(address) d.addCallback(lambda is_mine: self._render_response(is_mine, OK_CODE)) return d @AuthJSONRPCServer.auth_required def jsonrpc_get_public_key_from_wallet(self, p): """ Get public key from wallet address Args: wallet: wallet address, base58 Returns: public key """ wallet = p['wallet'] d = self.session.wallet.get_pub_keys(wallet) d.addCallback(lambda r: self._render_response(r, OK_CODE)) def jsonrpc_get_time_behind_blockchain(self): """ Get number of blocks behind the blockchain Args: None Returns: number of blocks behind blockchain, int """ def _get_time_behind(): try: local_height = self.session.wallet.network.get_local_height() remote_height = self.session.wallet.network.get_server_height() return defer.succeed(remote_height - local_height) except: return defer.fail() d = _get_time_behind() d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d @AuthJSONRPCServer.auth_required def jsonrpc_get_new_address(self): """ Generate a new wallet address Args: None Returns: new wallet address, base 58 string """ def _disp(address): log.info("Got new wallet address: " + address) return defer.succeed(address) d = self.session.wallet.get_new_address() d.addCallback(_disp) d.addCallback(lambda address: self._render_response(address, OK_CODE)) return d @AuthJSONRPCServer.auth_required def jsonrpc_send_amount_to_address(self, p): """ Send credits to an address Args: amount: the amount to send address: the address of the recipient Returns: True if payment successfully scheduled """ if 'amount' in p.keys() and 'address' in p.keys(): amount = p['amount'] address = p['address'] else: return server.failure reserved_points = self.session.wallet.reserve_points(address, amount) if reserved_points is None: return defer.fail(InsufficientFundsError()) d = self.session.wallet.send_points_to_address(reserved_points, amount) d.addCallback(lambda _: self._render_response(True, OK_CODE)) return d def jsonrpc_get_best_blockhash(self): """ Get hash of most recent block Args: None Returns: Hash of most recent block """ d = self.session.wallet.get_best_blockhash() d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d def jsonrpc_get_block(self, p): """ Get contents of a block Args: blockhash: hash of the block to look up Returns: requested block """ if 'blockhash' in p.keys(): blockhash = p['blockhash'] d = self.session.wallet.get_block(blockhash) elif 'height' in p.keys(): height = p['height'] d = self.session.wallet.get_block_info(height) d.addCallback(lambda blockhash: self.session.wallet.get_block(blockhash)) else: return server.failure d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d def jsonrpc_get_claims_for_tx(self, p): """ Get claims for tx Args: txid: txid of a name claim transaction Returns: any claims contained in the requested tx """ if 'txid' in p.keys(): txid = p['txid'] else: return server.failure d = self.session.wallet.get_claims_from_tx(txid) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d @AuthJSONRPCServer.auth_required def jsonrpc_download_descriptor(self, p): """ Download and return a sd blob Args: sd_hash Returns sd blob, dict """ sd_hash = p[FileID.SD_HASH] timeout = p.get('timeout', conf.settings.sd_download_timeout) d = self._download_sd_blob(sd_hash, timeout) d.addCallbacks( lambda r: self._render_response(r, OK_CODE), lambda _: self._render_response(False, OK_CODE)) return d def jsonrpc_get_nametrie(self): """ Get the nametrie Args: None Returns: Name claim trie """ d = self.session.wallet.get_nametrie() d.addCallback(lambda r: [i for i in r if 'txid' in i.keys()]) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d @AuthJSONRPCServer.auth_required def jsonrpc_set_miner(self, p): """ Start of stop the miner, function only available when lbrycrd is set as the wallet Args: run: True/False Returns: miner status, True/False """ stat = p['run'] if stat: d = self.session.wallet.start_miner() else: d = self.session.wallet.stop_miner() d.addCallback(lambda _: self.session.wallet.get_miner_status()) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d def jsonrpc_get_miner_status(self): """ Get status of miner Args: None Returns: True/False """ d = self.session.wallet.get_miner_status() d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d def jsonrpc_log(self, p): """ Log message Args: 'message': message to be logged Returns: True """ message = p['message'] log.info("API client log request: %s" % message) return self._render_response(True, OK_CODE) def jsonrpc_upload_log(self, p=None): """ Upload log Args, optional: 'name_prefix': prefix to indicate what is requesting the log upload 'exclude_previous': true/false, whether or not to exclude previous sessions from upload, defaults on true Returns: True """ if p: if 'name_prefix' in p.keys(): log_type = p['name_prefix'] + '_api' elif 'log_type' in p.keys(): log_type = p['log_type'] + '_api' else: log_type = None if 'exclude_previous' in p.keys(): exclude_previous = p['exclude_previous'] else: exclude_previous = True if 'message' in p.keys(): log.info("Upload log message: " + str(p['message'])) if 'force' in p.keys(): force = p['force'] else: force = False else: log_type = "api" exclude_previous = True d = self._upload_log(log_type=log_type, exclude_previous=exclude_previous, force=force) d.addCallback(lambda _: self._render_response(True, OK_CODE)) return d @AuthJSONRPCServer.auth_required def jsonrpc_configure_ui(self, p): """ Configure the UI being hosted Args, optional: 'branch': a branch name on lbryio/lbry-web-ui 'path': path to a ui folder """ if 'check_requirements' in p: check_require = p['check_requirements'] else: check_require = True if 'path' in p: d = self.lbry_ui_manager.setup( user_specified=p['path'], check_requirements=check_require) elif 'branch' in p: d = self.lbry_ui_manager.setup(branch=p['branch'], check_requirements=check_require) else: d = self.lbry_ui_manager.setup(check_requirements=check_require) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d @AuthJSONRPCServer.auth_required def jsonrpc_reveal(self, p): """ Reveal a file or directory in file browser Args: 'path': path to be selected in file browser Returns: True, opens file browser """ path = p['path'] if sys.platform == "darwin": d = threads.deferToThread(subprocess.Popen, ['open', '-R', path]) else: # No easy way to reveal specific files on Linux, so just open the containing directory d = threads.deferToThread(subprocess.Popen, ['xdg-open', os.path.dirname(path)]) d.addCallback(lambda _: self._render_response(True, OK_CODE)) return d def jsonrpc_get_peers_for_hash(self, p): """ Get peers for blob hash Args: 'blob_hash': blob hash Returns: List of contacts """ blob_hash = p['blob_hash'] d = self.session.peer_finder.find_peers_for_blob(blob_hash) d.addCallback(lambda r: [[c.host, c.port, c.is_available()] for c in r]) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d def jsonrpc_announce_all_blobs_to_dht(self): """ Announce all blobs to the dht Args: None Returns: """ d = self.session.blob_manager.immediate_announce_all_blobs() d.addCallback(lambda _: self._render_response("Announced", OK_CODE)) return d def jsonrpc_reflect(self, p): """ Reflect a stream Args: sd_hash: sd_hash of lbry file Returns: True or traceback """ sd_hash = p[FileID.SD_HASH] d = self._get_lbry_file(FileID.SD_HASH, sd_hash, return_json=False) d.addCallback(self._reflect) d.addCallbacks( lambda _: self._render_response(True, OK_CODE), lambda err: self._render_response(err.getTraceback(), OK_CODE)) return d def jsonrpc_get_blob_hashes(self): """ Returns all blob hashes Args: None Returns: list of blob hashes """ d = self.session.blob_manager.get_all_verified_blobs() d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d def jsonrpc_reflect_all_blobs(self): """ Reflects all saved blobs Args: None Returns: True """ d = self.session.blob_manager.get_all_verified_blobs() d.addCallback(self._reflect_blobs) d.addCallback(lambda r: self._render_response(r, OK_CODE)) return d def jsonrpc_get_mean_availability(self): """ Get mean blob availability Args: None Returns: Mean peers for a blob """ d = self._render_response(self.session.blob_tracker.last_mean_availability, OK_CODE) return d def jsonrpc_get_availability(self, p): """ Get stream availability for a winning claim Arg: name (str): lbry uri Returns: peers per blob / total blobs """ def _get_mean(blob_availabilities): peer_counts = [] for blob_availability in blob_availabilities: for blob, peers in blob_availability.iteritems(): peer_counts.append(peers) if peer_counts: return round(1.0 * sum(peer_counts) / len(peer_counts), 2) else: return 0.0 name = p[FileID.NAME] d = self._resolve_name(name, force_refresh=True) d.addCallback(get_sd_hash) d.addCallback(self._download_sd_blob) d.addCallbacks( lambda descriptor: [blob.get('blob_hash') for blob in descriptor['blobs']], lambda _: []) d.addCallback(self.session.blob_tracker.get_availability_for_blobs) d.addCallback(_get_mean) d.addCallback(lambda result: self._render_response(result, OK_CODE)) return d @AuthJSONRPCServer.auth_required def jsonrpc_test_api_authentication(self): if self._use_authentication: return self._render_response(True, OK_CODE) return self._render_response("Not using authentication", OK_CODE) def get_lbryum_version_from_github(): r = urlopen("https://raw.githubusercontent.com/lbryio/lbryum/master/lib/version.py").read().split('\n') version = next(line.split("=")[1].split("#")[0].replace(" ", "") for line in r if "LBRYUM_VERSION" in line) version = version.replace("'", "") return version def get_lbrynet_version_from_github(): """Return the latest released version from github.""" response = requests.get('https://api.github.com/repos/lbryio/lbry/releases/latest') release = response.json() tag = release['tag_name'] # githubs documentation claims this should never happen, but we'll check just in case if release['prerelease']: raise Exception('Release {} is a pre-release'.format(tag)) return get_version_from_tag(tag) def get_version_from_tag(tag): match = re.match('v([\d.]+)', tag) if match: return match.group(1) else: raise Exception('Failed to parse version from tag {}'.format(tag)) def get_sd_hash(stream_info): if not stream_info: return None try: return stream_info['sources']['lbry_sd_hash'] except KeyError: return stream_info.get('stream_hash') def get_output_callback(params): def callback(l): return { 'stream_hash': params.sd_hash if params.stream_info else l.sd_hash, 'path': os.path.join(params.download_directory, l.file_name) } return callback class _DownloadNameHelper(object): def __init__(self, daemon, name, timeout=conf.settings.download_timeout, download_directory=None, file_name=None, wait_for_write=True): self.daemon = daemon self.name = name self.timeout = timeout if not download_directory or not os.path.isdir(download_directory): self.download_directory = daemon.download_directory else: self.download_directory = download_directory self.file_name = file_name self.wait_for_write = wait_for_write def _setup_stream(self, stream_info): stream_hash = get_sd_hash(stream_info) d = self.daemon._get_lbry_file_by_sd_hash(stream_hash) d.addCallback(self._prepend_stream_info, stream_info) return d def _prepend_stream_info(self, lbry_file, stream_info): if lbry_file: if os.path.isfile(os.path.join(self.download_directory, lbry_file.file_name)): return defer.succeed((stream_info, lbry_file)) return defer.succeed((stream_info, None)) def wait_or_get_stream(self, args): stream_info, lbry_file = args if lbry_file: log.debug('Wait on lbry_file') return self._wait_on_lbry_file(lbry_file) else: log.debug('No lbry_file, need to get stream') return self._get_stream(stream_info) def _get_stream(self, stream_info): d = self.daemon.add_stream( self.name, self.timeout, self.download_directory, self.file_name, stream_info) def _handle_timeout(args): was_successful, _, _ = args if not was_successful: log.warning("lbry://%s timed out, removing from streams", self.name) del self.daemon.streams[self.name] d.addCallback(_handle_timeout) if self.wait_for_write: d.addCallback(lambda _: self._wait_for_write()) def _get_stream_for_return(): stream = self.daemon.streams.get(self.name, None) if stream: return stream.downloader else: self._remove_from_wait("Timed out") return defer.fail(Exception("Timed out")) d.addCallback(lambda _: _get_stream_for_return()) return d def _wait_for_write(self): d = defer.succeed(None) if not self.has_downloader_wrote(): d.addCallback(lambda _: reactor.callLater(1, self._wait_for_write)) return d def has_downloader_wrote(self): stream = self.daemon.streams.get(self.name, False) if stream: downloader = stream.downloader else: downloader = False if not downloader: return False return self.get_written_bytes(downloader.file_name) def _wait_on_lbry_file(self, f): written_bytes = self.get_written_bytes(f.file_name) if written_bytes: return defer.succeed(self._disp_file(f)) return task.deferLater(reactor, 1, self._wait_on_lbry_file, f) def get_written_bytes(self, file_name): """Returns the number of bytes written to `file_name`. Returns False if there were issues reading `file_name`. """ try: file_path = os.path.join(self.download_directory, file_name) if os.path.isfile(file_path): written_file = file(file_path) written_file.seek(0, os.SEEK_END) written_bytes = written_file.tell() written_file.close() else: written_bytes = False except Exception: writen_bytes = False return written_bytes def _disp_file(self, f): file_path = os.path.join(self.download_directory, f.file_name) log.info("Already downloaded: %s --> %s", f.sd_hash, file_path) return f def _remove_from_wait(self, r): if self.name in self.daemon.waiting_on: del self.daemon.waiting_on[self.name] return r class _ResolveNameHelper(object): def __init__(self, daemon, name, force_refresh): self.daemon = daemon self.name = name self.force_refresh = force_refresh def get_deferred(self): if self.need_fresh_stream(): log.info("Resolving stream info for lbry://%s", self.name) d = self.wallet.get_stream_info_for_name(self.name) d.addCallback(self._cache_stream_info) else: log.debug("Returning cached stream info for lbry://%s", self.name) d = defer.succeed(self.name_data['claim_metadata']) return d @property def name_data(self): return self.daemon.name_cache[self.name] @property def wallet(self): return self.daemon.session.wallet def now(self): return self.daemon._get_long_count_timestamp() def _add_txid(self, txid): self.name_data['txid'] = txid return defer.succeed(None) def _cache_stream_info(self, stream_info): self.daemon.name_cache[self.name] = { 'claim_metadata': stream_info, 'timestamp': self.now() } d = self.wallet.get_txid_for_name(self.name) d.addCallback(self._add_txid) d.addCallback(lambda _: self.daemon._update_claim_cache()) d.addCallback(lambda _: self.name_data['claim_metadata']) return d def need_fresh_stream(self): return self.force_refresh or not self.is_in_cache() or self.is_cached_name_expired() def is_in_cache(self): return self.name in self.daemon.name_cache def is_cached_name_expired(self): time_in_cache = self.now() - self.name_data['timestamp'] return time_in_cache >= self.daemon.cache_time class _GetFileHelper(object): def __init__(self, daemon, search_by, val, return_json=True): self.daemon = daemon self.search_by = search_by self.val = val self.return_json = return_json def retrieve_file(self): d = self.search_for_file() if self.return_json: d.addCallback(self._get_json) return d def search_for_file(self): if self.search_by == FileID.NAME: return self.daemon._get_lbry_file_by_uri(self.val) elif self.search_by == FileID.SD_HASH: return self.daemon._get_lbry_file_by_sd_hash(self.val) elif self.search_by == FileID.FILE_NAME: return self.daemon._get_lbry_file_by_file_name(self.val) raise Exception('{} is not a valid search operation'.format(self.search_by)) def _get_json(self, lbry_file): if lbry_file: d = lbry_file.get_total_bytes() d.addCallback(self._generate_reply, lbry_file) d.addCallback(self._add_metadata, lbry_file) return d else: return False def _generate_reply(self, size, lbry_file): written_bytes = self._get_written_bytes(lbry_file) code, message = self._get_status(lbry_file) if code == DOWNLOAD_RUNNING_CODE: d = lbry_file.status() d.addCallback(self._get_msg_for_file_status) d.addCallback( lambda msg: self._get_properties_dict(lbry_file, code, msg, written_bytes, size)) else: d = defer.succeed( self._get_properties_dict(lbry_file, code, message, written_bytes, size)) return d def _get_msg_for_file_status(self, file_status): message = STREAM_STAGES[2][1] % ( file_status.name, file_status.num_completed, file_status.num_known, file_status.running_status) return defer.succeed(message) def _get_key(self, lbry_file): return binascii.b2a_hex(lbry_file.key) if lbry_file.key else None def _full_path(self, lbry_file): return os.path.join(lbry_file.download_directory, lbry_file.file_name) def _get_status(self, lbry_file): if self.search_by == FileID.NAME: if self.val in self.daemon.streams.keys(): status = self.daemon.streams[self.val].code elif lbry_file in self.daemon.lbry_file_manager.lbry_files: status = STREAM_STAGES[2] else: status = [False, False] else: status = [False, False] return status def _get_written_bytes(self, lbry_file): full_path = self._full_path(lbry_file) if os.path.isfile(full_path): with open(full_path) as written_file: written_file.seek(0, os.SEEK_END) written_bytes = written_file.tell() else: written_bytes = False return written_bytes def _get_properties_dict(self, lbry_file, code, message, written_bytes, size): key = self._get_key(lbry_file) full_path = self._full_path(lbry_file) mime_type = mimetypes.guess_type(full_path)[0] return { 'completed': lbry_file.completed, 'file_name': lbry_file.file_name, 'download_directory': lbry_file.download_directory, 'points_paid': lbry_file.points_paid, 'stopped': lbry_file.stopped, 'stream_hash': lbry_file.stream_hash, 'stream_name': lbry_file.stream_name, 'suggested_file_name': lbry_file.suggested_file_name, 'upload_allowed': lbry_file.upload_allowed, 'sd_hash': lbry_file.sd_hash, 'lbry_uri': lbry_file.uri, 'txid': lbry_file.txid, 'claim_id': lbry_file.claim_id, 'download_path': full_path, 'mime_type': mime_type, 'key': key, 'total_bytes': size, 'written_bytes': written_bytes, 'code': code, 'message': message } def _add_metadata(self, message, lbry_file): def _add_to_dict(metadata): message['metadata'] = metadata return defer.succeed(message) if lbry_file.txid: d = self.daemon._resolve_name(lbry_file.uri) d.addCallbacks(_add_to_dict, lambda _: _add_to_dict("Pending confirmation")) else: d = defer.succeed(message) return d def get_lbry_file_search_value(p): for searchtype in (FileID.SD_HASH, FileID.NAME, FileID.FILE_NAME): value = p.get(searchtype) if value: return searchtype, value raise NoValidSearch() def handle_failure(err, msg): log_support.failure(err, log, msg) # TODO: Is this a module? It looks like it: # # In [1]: import twisted.web.server # In [2]: twisted.web.server.failure # Out[2]: # # If so, maybe we should return something else. return server.failure def run_reflector_factory(factory): reflector_server = random.choice(conf.settings.reflector_servers) reflector_address, reflector_port = reflector_server log.info("Start reflector client") d = reactor.resolve(reflector_address) d.addCallback(lambda ip: reactor.connectTCP(ip, reflector_port, factory)) d.addCallback(lambda _: factory.finished_deferred) return d