540 lines
18 KiB
Python
540 lines
18 KiB
Python
# -*- coding: utf-8 -*-
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# vi:si:et:sw=4:sts=4:ts=4
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from queue import Queue
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from threading import Thread
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import json
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from io import BytesIO
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import gzip
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import urllib.request, urllib.error, urllib.parse
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import os
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import time
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import socket
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import socks
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import ox
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from tornado.ioloop import PeriodicCallback
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import settings
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import user.models
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from websocket import trigger_event
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from localnodes import LocalNodes
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from tor_request import get_opener
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from utils import user_sort_key, get_peer
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import state
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import db
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import library
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import logging
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logger = logging.getLogger(__name__)
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DEBUG_NODES=False
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class Node(Thread):
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host = None
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local = None
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_online = None
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TIMEOUT = 5
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def __init__(self, nodes, user):
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self._nodes = nodes
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self.user = user
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self.user_id = user.id
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self._opener = get_opener(self.user_id)
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self._q = Queue()
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Thread.__init__(self)
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self.daemon = True
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self.start()
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def run(self):
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self.ping()
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while not state.shutdown:
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action = self._q.get()
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if state.shutdown:
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break
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if action == 'send_response':
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self._send_response()
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elif action == 'ping':
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self.online = self.can_connect()
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else:
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logger.debug('unknown action %s', action)
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def join(self):
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self._q.put('')
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#return Thread.join(self)
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def ping(self):
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if state.online:
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self._q.put('ping')
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@property
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def url(self):
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url = None
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if self.local:
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if ':' in self.local:
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url = 'https://[%s]:%s' % (self.local, self.port)
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else:
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url = 'https://%s:%s' % (self.local, self.port)
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elif len(self.user_id) == 16:
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url = 'https://%s.onion:9851' % self.user_id
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return url
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@property
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def online(self):
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return self._online
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@online.setter
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def online(self, online):
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if self._online != online:
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self._online = online
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self.trigger_status()
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else:
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self._online = online
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def resolve(self):
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#logger.debug('resolve node %s', self.user_id)
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r = self.get_local()
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if r:
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self.local = r['host']
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if 'port' in r:
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self.port = r['port']
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else:
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self.local = None
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self.port = 9851
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def get_local(self):
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if self._nodes and self._nodes.local:
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return self._nodes.local.get(self.user_id)
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return None
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def request(self, action, *args):
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logger.debug('request[%s] %s%s', self.user_id, action, args)
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self.resolve()
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url = self.url
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if not url:
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logger.debug('unable to find host %s', self.user_id)
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self.online = False
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return None
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#logger.debug('url=%s', url)
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content = json.dumps([action, args]).encode()
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headers = {
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'User-Agent': settings.USER_AGENT,
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'X-Node-Protocol': settings.NODE_PROTOCOL,
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'Accept': 'text/plain',
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'Accept-Encoding': 'gzip',
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'Content-Type': 'application/json',
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}
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self._opener.addheaders = list(zip(headers.keys(), headers.values()))
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#logger.debug('headers: %s', self._opener.addheaders)
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try:
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r = self._opener.open(url, data=content, timeout=self.TIMEOUT*2)
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except urllib.error.HTTPError as e:
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if e.code == 403:
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logger.debug('403: %s (%s)', url, self.user_id)
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if state.tasks:
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state.tasks.queue('peering', (self.user_id, False))
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del self._nodes[self.user_id]
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self.online = False
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return None
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logger.debug('urllib2.HTTPError %s %s', e, e.code)
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self.online = False
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return None
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except urllib.error.URLError as e:
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logger.debug('urllib2.URLError %s', e)
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self.online = False
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return None
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except:
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logger.debug('unknown url error', exc_info=True)
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self.online = False
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return None
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data = r.read()
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if r.headers.get('content-encoding', None) == 'gzip':
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data = gzip.GzipFile(fileobj=BytesIO(data)).read()
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version = r.headers.get('X-Node-Protocol', None)
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if version != settings.NODE_PROTOCOL:
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logger.debug('version does not match local: %s remote %s (%s)', settings.NODE_PROTOCOL, version, self.user_id)
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self.online = False
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if version > settings.NODE_PROTOCOL:
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state.update_required = True
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return None
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response = json.loads(data.decode('utf-8'))
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return response
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def can_connect(self):
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self.resolve()
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url = self.url
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if not state.online and not self.local:
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return False
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try:
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if url:
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headers = {
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'User-Agent': settings.USER_AGENT,
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'X-Node-Protocol': settings.NODE_PROTOCOL,
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'Accept-Encoding': 'gzip',
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}
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self._opener.addheaders = list(zip(headers.keys(), headers.values()))
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self._opener.timeout = 2
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r = self._opener.open(url)
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version = r.headers.get('X-Node-Protocol', None)
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if version != settings.NODE_PROTOCOL:
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logger.debug('version does not match local: %s remote %s', settings.NODE_PROTOCOL, version)
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return False
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c = r.read()
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if DEBUG_NODES:
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logger.debug('can connect to: %s', url)
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return True
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except:
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if DEBUG_NODES:
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logger.debug('can not connect to: %s', url)
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pass
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return False
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def is_online(self):
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return self.online or self.get_local() != None
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def send_response(self):
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self._q.put('send_response')
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def _send_response(self):
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with db.session():
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u = user.models.User.get(self.user_id)
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if u and u.peered or u.queued:
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if DEBUG_NODES:
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logger.debug('go online peered=%s queued=%s %s (%s)', u.peered, u.queued, u.id, u.nickname)
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try:
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self.online = self.can_connect()
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except:
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if DEBUG_NODES:
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logger.debug('failed to connect to %s', self.user_id)
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self.online = False
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if self.online:
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if DEBUG_NODES:
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logger.debug('connected to %s', self.url)
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if u.queued:
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if DEBUG_NODES:
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logger.debug('queued peering event pending=%s peered=%s', u.pending, u.peered)
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if u.pending == 'sent':
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self.peering('requestPeering')
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elif u.pending == '' and u.peered:
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self.peering('acceptPeering')
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else:
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#fixme, what about cancel/reject peering here?
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self.peering('removePeering')
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def trigger_status(self):
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if self.online is not None:
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trigger_event('status', {
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'id': self.user_id,
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'online': self.online
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})
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def pullChanges(self):
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if state.shutdown:
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return
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self.online = self.can_connect()
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if not self.online or state.shutdown:
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return
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with db.session():
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u = user.models.User.get_or_create(self.user_id)
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if not u or not self.online or not u.peered:
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return True
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peer = get_peer(self.user_id)
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from_revision = peer.info.get('revision', -1) + 1
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try:
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changes = self.request('pullChanges', from_revision)
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except:
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self.online = False
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if DEBUG_NODES:
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logger.debug('%s went offline', u.name, exc_info=True)
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return False
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if not changes:
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return False
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#with open('/tmp/changelog_%s_%s.json' % (self.user_id, from_revision), 'w') as f:
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# json.dump(changes, f, ensure_ascii=False, indent=4)
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return peer.apply_changes(changes)
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def peering(self, action):
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with db.session():
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u = user.models.User.get_or_create(self.user_id)
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if action in ('requestPeering', 'acceptPeering'):
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r = self.request(action, settings.preferences['username'], u.info.get('message'))
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else:
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r = self.request(action, u.info.get('message'))
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if r != None:
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u.queued = False
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if 'message' in u.info:
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del u.info['message']
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u.save()
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else:
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logger.debug('peering failed? %s %s', action, r)
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if action in ('cancelPeering', 'rejectPeering', 'removePeering'):
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self.online = False
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trigger_event('peering.%s'%action.replace('Peering', ''), u.json())
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return True
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headers = {
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'X-Node-Protocol': settings.NODE_PROTOCOL,
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'User-Agent': settings.USER_AGENT,
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'Accept-Encoding': 'gzip',
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}
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def download(self, item):
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self.resolve()
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url = '%s/get/%s' % (self.url, item.id)
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if DEBUG_NODES:
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logger.debug('download %s', url)
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self._opener.addheaders = list(zip(self.headers.keys(), self.headers.values()))
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try:
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r = self._opener.open(url, timeout=self.TIMEOUT*5)
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except socket.timeout:
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logger.debug('timeout %s', url)
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return False
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except socks.GeneralProxyError:
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logger.debug('openurl failed %s', url)
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return False
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except urllib.error.URLError as e:
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logger.debug('openurl failed urllib2.URLError %s', e.reason)
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return False
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except:
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logger.debug('openurl failed %s', url, exc_info=True)
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return False
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if r.getcode() == 200:
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try:
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if r.headers.get('content-encoding', None) == 'gzip':
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fileobj = gzip.GzipFile(fileobj=r)
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else:
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fileobj = r
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content = []
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ct = time.time()
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size = item.info['size']
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received = 0
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chunk_size = 16*1024
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for chunk in iter(lambda: fileobj.read(chunk_size), b''):
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content.append(chunk)
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received += len(chunk)
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if time.time() - ct > 1:
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ct = time.time()
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if state.shutdown:
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return False
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t = state.downloads.transfers.get(item.id)
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if not t: # transfer was canceled
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trigger_event('transfer', {
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'id': item.id, 'progress': -1
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})
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return False
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else:
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t['progress'] = received / size
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trigger_event('transfer', {
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'id': item.id, 'progress': t['progress']
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})
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state.downloads.transfers[item.id] = t
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if state.bandwidth:
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while not state.bandwidth.download(chunk_size) and not state.shutdown:
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time.sleep(0.1)
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return item.save_file(b''.join(content))
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except:
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logger.debug('download failed %s', url, exc_info=True)
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return False
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else:
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logger.debug('FAILED %s', url)
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return False
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def download_preview(self, item_id):
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from item.icons import icons
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self.resolve()
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if DEBUG_NODES:
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logger.debug('download preview for %s from %s', item_id, self.url)
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url = '%s/preview/%s' % (self.url, item_id)
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self._opener.addheaders = list(zip(self.headers.keys(), self.headers.values()))
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try:
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r = self._opener.open(url, timeout=self.TIMEOUT*2)
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except socket.timeout:
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logger.debug('timeout %s', url)
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return False
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except socks.GeneralProxyError:
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logger.debug('download failed %s', url)
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return False
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except:
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logger.debug('download failed %s', url, exc_info=True)
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self.online = False
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return False
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code = r.getcode()
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if code == 200:
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try:
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if r.headers.get('content-encoding', None) == 'gzip':
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fileobj = gzip.GzipFile(fileobj=r)
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else:
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fileobj = r
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content = fileobj.read()
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key = 'preview:' + item_id
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icons[key] = content
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icons.clear(key+':')
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return True
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except:
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logger.debug('preview download failed %s', url, exc_info=True)
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elif code == 404:
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pass
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else:
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logger.debug('FAILED %s', url)
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return False
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def download_upgrade(self, release):
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for module in release['modules']:
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path = os.path.join(settings.update_path, release['modules'][module]['name'])
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if not os.path.exists(path):
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url = '%s/oml/%s' % (self.url, release['modules'][module]['name'])
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sha1 = release['modules'][module]['sha1']
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headers = {
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'User-Agent': settings.USER_AGENT,
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}
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self._opener.addheaders = list(zip(headers.keys(), headers.values()))
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r = self._opener.open(url)
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if r.getcode() == 200:
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with open(path, 'w') as fd:
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fd.write(r.read())
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if (ox.sha1sum(path) != sha1):
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logger.error('invalid update!')
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os.unlink(path)
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return False
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else:
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return False
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class Nodes(Thread):
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_nodes = {}
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local = None
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_pulling = False
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def __init__(self):
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self._q = Queue()
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with db.session():
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for u in user.models.User.query.filter_by(peered=True):
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if 'local' in u.info:
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del u.info['local']
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u.save()
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self.queue('add', u.id)
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state.peers[u.id] = library.Peer(u.id)
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for u in user.models.User.query.filter_by(queued=True):
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logger.debug('adding queued node... %s', u.id)
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self.queue('add', u.id, True)
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self.local = LocalNodes()
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self._pullcb = PeriodicCallback(self.pull, settings.server['pull_interval'])
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self._pullcb.start()
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Thread.__init__(self)
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self.daemon = True
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self.start()
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def run(self):
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library.sync_db()
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self.queue('pull')
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while not state.shutdown:
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args = self._q.get()
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if args:
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if args[0] == 'add':
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self._add(*args[1:])
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elif args[0] == 'pull':
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self._pull()
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else:
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self._call(*args)
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def queue(self, *args):
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self._q.put(list(args))
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def is_online(self, id):
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return id in self._nodes and self._nodes[id].is_online()
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def download(self, id, item):
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return id in self._nodes and self._nodes[id].download(item)
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def download_preview(self, id, item):
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return id in self._nodes and \
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self._nodes[id].is_online() and \
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self._nodes[id].download_preview(item)
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def _call(self, target, action, *args):
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if target == 'all':
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nodes = list(self._nodes.values())
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elif target == 'peered':
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nodes = [n for n in list(self._nodes.values()) if n.user.peered]
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elif target == 'online':
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nodes = [n for n in list(self._nodes.values()) if n.online]
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else:
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if not target in self._nodes:
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self._add(target)
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nodes = [self._nodes[target]]
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for node in nodes:
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r = getattr(node, action)(*args)
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logger.debug('call node api %s->%s%s = %s', node.user_id, action, args, r)
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def _add(self, user_id, send_response=False):
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if user_id not in self._nodes:
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from user.models import User
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with db.session():
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self._nodes[user_id] = Node(self, User.get_or_create(user_id))
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else:
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self._nodes[user_id].ping()
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if send_response:
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self._nodes[user_id].send_response()
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def pull(self):
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if not self._pulling:
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self.queue('pull')
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def _pull(self):
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if state.activity and state.activity.get('activity') == 'import':
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return
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self._pulling = True
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if state.shutdown:
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return
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users = []
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with db.session():
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from user.models import User
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for u in User.query.filter(User.id!=settings.USER_ID).filter_by(peered=True).all():
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users.append(u.json(['id', 'index', 'name']))
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users.sort(key=user_sort_key)
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for u in users:
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if state.shutdown:
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break
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node = self._nodes.get(u['id'])
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if node:
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node.pullChanges()
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self._pulling = False
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def join(self):
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self._q.put(None)
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for node in list(self._nodes.values()):
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node.join()
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if self.local:
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self.local.close()
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return Thread.join(self)
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def publish_node():
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update_online()
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state.check_nodes = PeriodicCallback(check_nodes, 120000)
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state.check_nodes.start()
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state._online = PeriodicCallback(update_online, 60000)
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state._online.start()
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def update_online():
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online = state.tor and state.tor.is_online()
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if online != state.online:
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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()
|
|
|
|
def check_nodes():
|
|
if state.online:
|
|
with db.session():
|
|
for u in user.models.User.query.filter_by(queued=True):
|
|
if not state.nodes.is_online(u.id):
|
|
logger.debug('queued peering message for %s trying to connect...', u.id)
|
|
state.nodes.queue('add', u.id, True)
|