435 lines
15 KiB
Python
435 lines
15 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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import socket
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from io import StringIO
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import gzip
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import urllib.request, urllib.error, urllib.parse
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from datetime import datetime
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import os
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import time
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import ox
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import ed25519
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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 changelog import Changelog
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import directory
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from websocket import trigger_event
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from localnodes import LocalNodes
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from ssl_request import get_opener
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import state
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import db
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import logging
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logger = logging.getLogger('oml.nodes')
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ENCODING='base64'
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class Node(Thread):
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_running = True
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_cert = None
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host = None
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online = False
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download_speed = 0
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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_id = user.id
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key = user.id.encode()
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self.vk = ed25519.VerifyingKey(key, encoding=ENCODING)
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logger.debug('new Node %s online=%s', self.user_id, self.online)
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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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self._ping = PeriodicCallback(self.ping, 120000)
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self._ping.start()
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self.ping()
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def run(self):
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while self._running:
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action = self._q.get()
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if not self._running:
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break
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if action == 'go_online' or not self.online:
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self._go_online()
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else:
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self.online = self.can_connect()
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def join(self):
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self._running = False
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self.ping()
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#return Thread.join(self)
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def ping(self):
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self._q.put('')
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def go_online(self):
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self._q.put('go_online')
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@property
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def url(self):
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if self.host:
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if ':' in self.host:
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url = 'https://[%s]:%s' % (self.host, self.port)
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else:
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url = 'https://%s:%s' % (self.host, self.port)
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else:
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url = None
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return url
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def resolve(self):
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logger.debug('resolve node')
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r = self.get_local()
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if not r:
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try:
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r = directory.get(self.vk)
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except:
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logger.debug('directory failed', exc_info=1)
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r = None
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if r:
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self.host = r['host']
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if 'port' in r:
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self.port = r['port']
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if r['cert'] != self._cert:
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self._cert = r['cert']
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self._opener = get_opener(self._cert)
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else:
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self.host = 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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local = self._nodes._local.get(self.user_id)
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if local and local['cert'] != self._cert:
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self._cert = local['cert']
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self._opener = get_opener(self._cert)
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return local
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return None
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def request(self, action, *args):
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url = self.url
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if not url:
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self.resolve()
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url = self.url
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if not self.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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content = json.dumps([action, args]).encode('utf-8')
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sig = settings.sk.sign(content, encoding=ENCODING).decode()
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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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'X-Ed25519-Key': settings.USER_ID,
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'X-Ed25519-Signature': sig,
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}
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self._opener.addheaders = list(zip(list(headers.keys()), list(headers.values())))
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logger.debug('headers: %s', self._opener.addheaders)
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try:
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self._opener.timeout = self.TIMEOUT
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r = self._opener.open(url, data=content)
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except urllib.error.HTTPError as e:
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if e.code == 403:
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logger.debug('REMOTE ENDED PEERING')
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with db.session():
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u = self.user
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if u.peered:
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u.update_peering(False)
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self.online = False
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return
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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=1)
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self.online = False
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return None
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data = r.read()
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logger.debug('response data: %s', data)
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if r.headers.get('content-encoding', None) == 'gzip':
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data = gzip.GzipFile(fileobj=StringIO(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', settings.NODE_PROTOCOL, version)
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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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sig = r.headers.get('X-Ed25519-Signature')
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if sig and self._valid(data, sig):
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response = json.loads(data.decode('utf-8'))
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else:
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logger.debug('invalid signature %s', data)
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response = None
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logger.debug('response: %s', response)
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return response
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def _valid(self, data, sig):
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if isinstance(data, str):
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data = data.encode('utf-8')
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try:
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self.vk.verify(sig, data, encoding=ENCODING)
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#except ed25519.BadSignatureError:
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except:
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return False
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return True
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@property
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def user(self):
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with db.session():
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return user.models.User.get_or_create(self.user_id)
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def can_connect(self):
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try:
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url = self.url
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if url:
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logger.debug('try to connect to %s', 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(list(headers.keys()), list(headers.values())))
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self._opener.timeout = 1
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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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logger.debug('ok')
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return True
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except:
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pass
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return False
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def _go_online(self):
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self.resolve()
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u = self.user
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logger.debug('go_online peer=%s queued=%s (%s)', u.peered, u.queued, u.id)
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if u.peered or u.queued and self.host:
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try:
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self.online = False
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logger.debug('try to connect to %s at [%s]:%s', self.user_id, self.host, self.port)
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if self.can_connect():
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logger.debug('connected to [%s]:%s', self.host, self.port)
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self.online = True
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if u.queued:
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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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if self.online:
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self.pullChanges()
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except:
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logger.debug('failed to connect to %s', self.user_id, exc_info=1)
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self.online = False
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else:
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self.online = False
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self.trigger_status()
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def trigger_status(self):
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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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last = Changelog.query.filter_by(user_id=self.user_id).order_by('-revision').first()
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from_revision = last.revision + 1 if last else 0
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logger.debug('pullChanges %s from %s', self.user.name, from_revision)
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changes = self.request('pullChanges', from_revision)
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if not changes:
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return False
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return Changelog.apply_changes(self.user, changes)
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def pushChanges(self, changes):
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logger.debug('pushing changes to %s %s', self.user_id, changes)
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if self.online:
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try:
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r = self.request('pushChanges', changes)
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except:
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self.online = False
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self.trigger_status()
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r = False
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logger.debug('pushedChanges %s %s', r, self.user_id)
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def peering(self, action):
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u = self.user
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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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else:
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self.go_online()
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trigger_event('peering.%s'%action.replace('Peering', ''), u.json())
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return True
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def download(self, item):
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from item.models import Transfer
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url = '%s/get/%s' % (self.url, item.id)
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headers = {
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'User-Agent': settings.USER_AGENT,
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}
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t1 = datetime.utcnow()
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logger.debug('download %s', url)
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self._opener.addheaders = zip(headers.keys(), 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:
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logger.debug('openurl failed %s', url, exec_info=1)
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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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content = gzip.GzipFile(fileobj=r).read()
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else:
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content = b''
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ct = datetime.utcnow()
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for chunk in iter(lambda: r.read(16*1024), b''):
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content += chunk
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if (datetime.utcnow() - ct).total_seconds() > 1:
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ct = datetime.utcnow()
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t = Transfer.get(item.id)
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t.progress = len(content) / item.info['size']
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t.save()
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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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'''
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content = r.read()
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'''
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t2 = datetime.utcnow()
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duration = (t2-t1).total_seconds()
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if duration:
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self.download_speed = len(content) / duration
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logger.debug('SPEED %s', ox.format_bits(self.download_speed))
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return item.save_file(content)
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except:
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logger.debug('download failed %s', url, exec_info=1)
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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_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(list(headers.keys()), list(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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def __init__(self):
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self._q = Queue()
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self._running = True
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self._local = LocalNodes()
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self._cleanup = PeriodicCallback(lambda: self.queue('cleanup'), 120000)
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self._cleanup.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 cleanup(self):
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if self._running:
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self._local.cleanup()
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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].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 _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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nodes = [self._nodes[target]]
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for node in nodes:
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getattr(node, action)(*args)
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def _add(self, user_id):
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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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if not self._nodes[user_id].online:
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self._nodes[user_id].ping()
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def run(self):
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while self._running:
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args = self._q.get()
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if args:
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if args[0] == 'cleanup':
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self.cleanup()
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elif args[0] == 'add':
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self._add(args[1])
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else:
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self._call(*args)
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def join(self):
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self._running = False
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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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self._local.join()
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return Thread.join(self)
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