# -*- coding: utf-8 -*- from io import BytesIO from queue import Queue from threading import Thread import gzip import json import os import socket import socks import time import urllib.error import urllib.parse import urllib.request import ox from tornado.ioloop import PeriodicCallback import settings import user.models from websocket import trigger_event from localnodes import LocalNodes from tor_request import get_opener from utils import user_sort_key, get_peer import state import db import library import logging logger = logging.getLogger(__name__) DEBUG_NODES = False class Node(Thread): host = None local = None _online = None TIMEOUT = 5 def __init__(self, nodes, user_id): self._nodes = nodes self.user_id = user_id self._opener = get_opener(self.user_id) self._q = Queue() self._pingcb = PeriodicCallback(self.ping, 10 * settings.server['pull_interval']) state.main.add_callback(self._pingcb.start) Thread.__init__(self) self.daemon = True self.start() def run(self): self.ping() while not state.shutdown: action = self._q.get() if state.shutdown: break if action == 'ping': self.online = self.can_connect() elif action == 'send_response': if self.online: self._send_response() else: if not self._q.qsize(): time.sleep(5) self.send_response() elif isinstance(action, list) and len(action) == 2: if self.online: self._call(action[0], *action[1]) else: if not self._q.qsize(): time.sleep(5) else: time.sleep(0.1) self.queue(action[0], *action[1]) else: logger.debug('unknown action %s', action) def join(self): self._q.put('') #return Thread.join(self) def ping(self): if state.online or self.get_local(): self._q.put('ping') def queue(self, action, *args): if DEBUG_NODES: logger.debug('queue node action %s->%s%s', self.user_id, action, args) self._q.put([action, args]) def _call(self, action, *args): r = getattr(self, action)(*args) logger.debug('call node api %s->%s%s = %s', self.user_id, action, args, r) @property def url(self): if self.local: if ':' in self.local: url = 'https://[%s]:%s' % (self.local, self.port) else: url = 'https://%s:%s' % (self.local, self.port) else: url = 'https://%s.onion:9851' % self.user_id return url @property def online(self): return self._online @online.setter def online(self, online): if self._online != online: self._online = online self.trigger_status() else: self._online = online def resolve(self): #logger.debug('resolve node %s', self.user_id) r = self.get_local() if r: self.local = r['host'] if 'port' in r: self.port = r['port'] else: self.local = None self.port = 9851 def is_local(self): return self._nodes and self.user_id in self._nodes.local def get_local(self): if self._nodes and self._nodes.local: return self._nodes.local.get_data(self.user_id) return None def request(self, action, *args): self.resolve() url = self.url if self.local: logger.debug('request:%s(%s:%s): %s%s', self.user_id, self.local, self.port, action, list(args)) else: logger.debug('request:%s: %s%s', self.user_id, action, list(args)) content = json.dumps([action, args]).encode() headers = { 'User-Agent': settings.USER_AGENT, 'X-Node-Protocol': settings.NODE_PROTOCOL, 'Accept': 'text/plain', 'Accept-Encoding': 'gzip', 'Content-Type': 'application/json', } self._opener.addheaders = list(zip(headers.keys(), headers.values())) #logger.debug('headers: %s', self._opener.addheaders) try: r = self._opener.open(url, data=content, timeout=self.TIMEOUT*12) except urllib.error.HTTPError as e: if e.code == 403: logger.debug('403: %s (%s)', url, self.user_id) if state.tasks: state.tasks.queue('peering', (self.user_id, False)) del self._nodes._nodes[self.user_id] self.online = False return None logger.debug('urllib2.HTTPError %s %s', e, e.code) self.online = False return None except urllib.error.URLError as e: logger.debug('urllib2.URLError %s', e) self.online = False return None except socket.timeout: logger.debug('timeout %s', url) self.online = False return None except: logger.debug('unknown url error', exc_info=True) self.online = False return None data = r.read() if r.headers.get('content-encoding', None) == 'gzip': data = gzip.GzipFile(fileobj=BytesIO(data)).read() version = r.headers.get('X-Node-Protocol', None) if version != settings.NODE_PROTOCOL: logger.debug('version does not match local: %s remote %s (%s)', settings.NODE_PROTOCOL, version, self.user_id) self.online = False if version > settings.NODE_PROTOCOL: state.update_required = True return None response = json.loads(data.decode('utf-8')) return response def can_connect(self): self.resolve() url = self.url if not state.online and not self.local: return False try: if url: headers = { 'User-Agent': settings.USER_AGENT, 'X-Node-Protocol': settings.NODE_PROTOCOL, 'Accept-Encoding': 'gzip', } self._opener.addheaders = list(zip(headers.keys(), headers.values())) self._opener.timeout = 2 r = self._opener.open(url) version = r.headers.get('X-Node-Protocol', None) if version != settings.NODE_PROTOCOL: logger.debug('version does not match local: %s remote %s', settings.NODE_PROTOCOL, version) return False c = r.read() if DEBUG_NODES: logger.debug('can connect to: %s', url) return True except: if DEBUG_NODES: logger.debug('can not connect to: %s', url) pass return False def is_online(self): return self.online or self.is_local() def send_response(self): self._q.put('send_response') def _send_response(self): with db.session(): u = user.models.User.get(self.user_id) if u: user_pending = u.pending user_peered = u.peered user_queued = u.queued else: user_queued = False if DEBUG_NODES: logger.debug('go online peered=%s queued=%s %s (%s)', u.peered, u.queued, u.id, u.nickname) if user_queued: if DEBUG_NODES: logger.debug('connected to %s', self.url) logger.debug('queued peering event pending=%s peered=%s', user_pending, user_peered) if user_pending == 'sent': self.peering('requestPeering') elif user_pending == '' and user_peered: self.peering('acceptPeering') else: #fixme, what about cancel/reject peering here? self.peering('removePeering') def trigger_status(self): if self.online is not None: trigger_event('status', { 'id': self.user_id, 'online': self.online }) def pullChanges(self): if state.shutdown: return self.online = self.can_connect() if not self.online or state.shutdown: return self.resolve() peer = get_peer(self.user_id) path = peer._logpath if os.path.exists(path): size = os.path.getsize(path) else: size = 0 url = '%s/log' % self.url if DEBUG_NODES: logger.debug('pullChanges: %s [%s]', self.user_id, url) headers = self.headers.copy() if size: headers['Range'] = '%s-' % size self._opener.addheaders = list(zip(headers.keys(), headers.values())) try: r = self._opener.open(url, timeout=self.TIMEOUT*60) except urllib.error.HTTPError as e: if e.code == 403: logger.debug('pullChanges 403: %s (%s)', url, self.user_id) if state.tasks: state.tasks.queue('peering', (self.user_id, False)) del self._nodes._nodes[self.user_id] self.online = False else: logger.debug('unknown http errpr %s %s (%s)', e.code, url, self.user_id) return False except socket.timeout: logger.debug('timeout %s', url) return False except socks.GeneralProxyError: logger.debug('openurl failed %s', url) return False except urllib.error.URLError as e: logger.debug('openurl failed urllib2.URLError %s', e.reason) return False except: logger.debug('openurl failed %s', url, exc_info=True) return False if r.getcode() in (200, 206): changed = False chunk_size = 16 * 1024 mode = 'ab' if r.getcode() == 206 else 'wb' content = b'' try: if r.headers.get('content-encoding', None) == 'gzip': fileobj = gzip.GzipFile(fileobj=r) else: fileobj = r for chunk in iter(lambda: fileobj.read(chunk_size), b''): content += chunk eol = content.rfind(b'\n') + 1 if eol > 0: with open(path, mode) as fd: fd.write(content[:eol]) content = content[eol:] mode = 'ab' changed = True if state.shutdown: return False if state.bandwidth: while not state.bandwidth.download(chunk_size) and not state.shutdown: time.sleep(0.1) if content: with open(path, mode) as fd: fd.write(content) changed = True if changed: peer.apply_log() except: logger.debug('download failed %s', url, exc_info=True) return False else: logger.debug('FAILED %s', url) return False def peering(self, action): pull_changes = False with db.session(): u = user.models.User.get_or_create(self.user_id) user_info = u.info if action in ('requestPeering', 'acceptPeering'): r = self.request(action, settings.preferences['username'], user_info.get('message')) else: r = self.request(action, user_info.get('message')) if r is not None: with db.session(): u = user.models.User.get(self.user_id) u.queued = False if 'message' in u.info: del u.info['message'] u.save() if action == 'acceptPeering': pull_changes = True else: logger.debug('peering failed? %s %s', action, r) if action in ('cancelPeering', 'rejectPeering', 'removePeering'): self.online = False with db.session(): u = user.models.User.get(self.user_id) trigger_event('peering.%s' % action.replace('Peering', ''), u.json()) if pull_changes: self.pullChanges() return True headers = { 'X-Node-Protocol': settings.NODE_PROTOCOL, 'User-Agent': settings.USER_AGENT, 'Accept-Encoding': 'gzip', } def download(self, item): self.resolve() url = '%s/get/%s' % (self.url, item.id) if DEBUG_NODES: logger.debug('download %s', url) self._opener.addheaders = list(zip(self.headers.keys(), self.headers.values())) try: r = self._opener.open(url, timeout=self.TIMEOUT*5) except socket.timeout: logger.debug('timeout %s', url) return False except socks.GeneralProxyError: logger.debug('openurl failed %s', url) return False except urllib.error.URLError as e: logger.debug('openurl failed urllib2.URLError %s', e.reason) return False except: logger.debug('openurl failed %s', url, exc_info=True) return False if r.getcode() == 200: try: if r.headers.get('content-encoding', None) == 'gzip': fileobj = gzip.GzipFile(fileobj=r) else: fileobj = r content = [] ct = time.time() size = item.info['size'] received = 0 chunk_size = 16*1024 for chunk in iter(lambda: fileobj.read(chunk_size), b''): content.append(chunk) received += len(chunk) if time.time() - ct > 1: ct = time.time() if state.shutdown: return False t = state.downloads.transfers.get(item.id) if not t: # transfer was canceled trigger_event('transfer', { 'id': item.id, 'progress': -1 }) return False else: t['progress'] = received / size trigger_event('transfer', { 'id': item.id, 'progress': t['progress'] }) state.downloads.transfers[item.id] = t if state.bandwidth: while not state.bandwidth.download(chunk_size) and not state.shutdown: time.sleep(0.1) return item.save_file(b''.join(content)) except: logger.debug('download failed %s', url, exc_info=True) return False else: logger.debug('FAILED %s', url) return False def download_preview(self, item_id): from item.icons import icons self.resolve() if DEBUG_NODES: logger.debug('download preview for %s from %s', item_id, self.url) url = '%s/preview/%s' % (self.url, item_id) self._opener.addheaders = list(zip(self.headers.keys(), self.headers.values())) try: r = self._opener.open(url, timeout=self.TIMEOUT*2) except socket.timeout: logger.debug('timeout %s', url) return False except socks.GeneralProxyError: logger.debug('download failed %s', url) return False except: logger.debug('download failed %s', url, exc_info=True) self.online = False return False code = r.getcode() if code == 200: try: if r.headers.get('content-encoding', None) == 'gzip': fileobj = gzip.GzipFile(fileobj=r) else: fileobj = r content = fileobj.read() key = 'preview:' + item_id icons[key] = content icons.clear(key+':') return True except: logger.debug('preview download failed %s', url, exc_info=True) elif code == 404: pass else: logger.debug('FAILED %s', url) return False def download_upgrade(self, release): for module in release['modules']: path = os.path.join(settings.update_path, release['modules'][module]['name']) if not os.path.exists(path): url = '%s/oml/%s' % (self.url, release['modules'][module]['name']) sha1 = release['modules'][module]['sha1'] headers = { 'User-Agent': settings.USER_AGENT, } self._opener.addheaders = list(zip(headers.keys(), headers.values())) r = self._opener.open(url) if r.getcode() == 200: with open(path, 'w') as fd: fd.write(r.read()) if (ox.sha1sum(path) != sha1): logger.error('invalid update!') os.unlink(path) return False else: return False def upload(self, items): logger.debug('add items to %s\'s inbox: %s', self.user_id, items) r = self.request('upload', items) return bool(r) class Nodes(Thread): _nodes = {} local = None _pulling = False def __init__(self): self._q = Queue() with db.session(): for u in user.models.User.query.filter_by(peered=True): self.queue('add', u.id) get_peer(u.id) for u in user.models.User.query.filter_by(queued=True): logger.debug('adding queued node... %s', u.id) self.queue('add', u.id, True) self.local = LocalNodes() self._pullcb = PeriodicCallback(self.pull, settings.server['pull_interval']) state.main.add_callback(self._pullcb.start) Thread.__init__(self) self.daemon = True self.start() def run(self): library.sync_db() self.queue('pull') while not state.shutdown: args = self._q.get() if args: if DEBUG_NODES: logger.debug('processing nodes queue: next: "%s", %s entries in queue', args[0], self._q.qsize()) if args[0] == 'add': self._add(*args[1:]) elif args[0] == 'pull': self._pull() else: self._call(*args) def queue(self, *args): if args and DEBUG_NODES: logger.debug('queue "%s", %s entries in queue', args, self._q.qsize()) self._q.put(list(args)) def peer_queue(self, peer, action, *args): if peer not in self._nodes: self._add(peer) elif not self._nodes[peer].is_online(): self._nodes[peer].ping() self._nodes[peer].queue(action, *args) def is_online(self, id): return id in self._nodes and self._nodes[id].is_online() def download(self, id, item): return id in self._nodes and self._nodes[id].download(item) def download_preview(self, id, item): return id in self._nodes and \ self._nodes[id].is_online() and \ self._nodes[id].download_preview(item) def _call(self, target, action, *args): if target == 'all': nodes = list(self._nodes.values()) elif target == 'peered': ids = [] with db.session(): from user.models import User for u in User.query.filter(User.id != settings.USER_ID).filter_by(peered=True).all(): ids.append(u.id) nodes = [n for n in list(self._nodes.values()) if n.user_id in ids] elif target == 'online': nodes = [n for n in list(self._nodes.values()) if n.online] else: if target not in self._nodes: self._add(target) nodes = [self._nodes[target]] for node in nodes: node._call(action, *args) def _add(self, user_id, send_response=False): if user_id not in self._nodes: from user.models import User with db.session(): User.get_or_create(user_id) self._nodes[user_id] = Node(self, user_id) else: self._nodes[user_id].ping() if send_response: self._nodes[user_id].send_response() def pull(self): if not self._pulling: self.queue('pull') def _pull(self): if not state.sync_enabled or settings.preferences.get('downloadRate') == 0: return if state.sync_db: return if state.activity and state.activity.get('activity') == 'import': return self._pulling = True if state.shutdown: return users = [] with db.session(): from user.models import User for u in User.query.filter(User.id != settings.USER_ID).filter_by(peered=True).all(): users.append(u.json(['id', 'index', 'name'])) users.sort(key=user_sort_key) for u in users: if state.shutdown: break node = self._nodes.get(u['id']) if node and node.is_online(): node.pullChanges() self._pulling = False def join(self): self._q.put(None) for node in list(self._nodes.values()): node.join() if self.local: self.local.close() return super().join(1) def publish_node(): update_online() state._online = PeriodicCallback(update_online, 60000) state._online.start() def update_online(): online = state.tor and state.tor.is_online() if online != state.online: state.online = online trigger_event('status', { 'id': settings.USER_ID, 'online': state.online }) if state.online: for node in list(state.nodes._nodes.values()): node.trigger_status()