298 lines
8.9 KiB
Python
298 lines
8.9 KiB
Python
# -*- coding: utf-8 -*-
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# vi:si:et:sw=4:sts=4:ts=4
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from __future__ import division
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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 datetime import datetime
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import os
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import ox
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import ed25519
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import requests
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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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ENCODING='base64'
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class Node(object):
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online = False
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download_speed = 0
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def __init__(self, nodes, user):
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self._nodes = nodes
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self._app = nodes._app
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self.user_id = user.id
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key = str(user.id)
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self.vk = ed25519.VerifyingKey(key, encoding=ENCODING)
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self.go_online()
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@property
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def url(self):
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local = self.get_local()
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if local:
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url = 'http://[%s]:%s' % (local['host'], local['port'])
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print 'using local peer discovery to access node', url
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elif not self.host:
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return None
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else:
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if ':' in self.host:
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url = 'http://[%s]:%s' % (self.host, self.port)
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else:
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url = 'http://%s:%s' % (self.host, self.port)
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return url
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def resolve(self):
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r = directory.get(self.vk)
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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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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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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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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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print 'unable to find host', 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])
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sig = settings.sk.sign(content, encoding=ENCODING)
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headers = {
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'User-Agent': settings.USER_AGENT,
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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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r = requests.post(url, data=content, headers=headers)
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if r.status_code == 403:
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print 'REMOTE ENDED PEERING'
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if self.user.peered:
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self.user.update_peering(False)
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self.online = False
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data = r.content
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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)
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else:
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print 'invalid signature', data
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response = None
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return response
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def _valid(self, data, sig):
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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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return user.models.User.get_or_create(self.user_id)
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def go_online(self):
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self.resolve()
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if self.user.peered:
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try:
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self.online = False
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print 'type to connect to', self.user_id
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self.pullChanges()
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print 'connected to', self.user_id
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self.online = True
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except:
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import traceback
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traceback.print_exc()
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print 'failed to connect to', self.user_id
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self.online = False
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else:
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self.online = False
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trigger_event('status', {
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'id': self.user_id,
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'status': 'online' if self.online else 'offline'
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})
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def pullChanges(self):
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with self._app.app_context():
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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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changes = self.request('pullChanges', from_revision)
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if not changes:
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return False
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for change in changes:
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if not Changelog.apply_change(self.user, change):
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print 'FAIL', change
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break
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return False
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return True
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def pushChanges(self, changes):
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print 'pushing changes to', self.user_id, changes
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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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trigger_event('status', {
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'id': self.user_id,
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'status': 'offline'
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})
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r = False
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print r
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def requestPeering(self, message):
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p = self.user
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p.pending = 'sent'
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p.save()
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r = self.request('requestPeering', settings.preferences['username'], message)
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return True
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def acceptPeering(self, message):
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r = self.request('acceptPeering', settings.preferences['username'], message)
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p = self.user
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p.update_peering(True)
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self.go_online()
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return True
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def rejectPeering(self, message):
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print 'reject peering!!!', self.user
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p = self.user
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p.update_peering(False)
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r = self.request('rejectPeering', message)
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print 'reject peering!!!', r
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self.online = False
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return True
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def removePeering(self, message):
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print 'remove peering!!!', self.user
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p = self.user
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if p.peered:
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p.update_peering(False)
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r = self.request('removePeering', message)
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self.online = False
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return True
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def cancelPeering(self, message):
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p = self.user
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p.update_peering(False)
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self.online = False
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r = self.request('cancelPeering', message)
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return True
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def download(self, item):
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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.now()
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print 'GET', url
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r = requests.get(url, headers=headers)
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if r.status_code == 200:
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t2 = datetime.now()
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duration = (t2-t1).total_seconds()
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if duration:
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self.download_speed = len(r.content) / duration
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print 'SPEED', ox.format_bits(self.download_speed)
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return item.save_file(r.content)
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else:
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print 'FAILED', url
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return False
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def download_upgrade(self):
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for module in settings.release['modules']:
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path = os.path.join(settings.update_path, settings.release['modules'][module]['name'])
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if not os.path.exists(path):
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url = '%s/oml/%s' % (self.url, settings.release['modules'][module]['name'])
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sha1 = settings.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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r = requests.get(url, headers=headers)
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if r.status_code == 200:
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with open(path, 'w') as fd:
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fd.write(r.content)
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if (ox.sha1sum(path) != sha1):
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print '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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def __init__(self, app):
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self._app = app
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self._q = Queue()
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self._running = True
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self._local = LocalNodes(app)
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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 queue(self, *args):
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self._q.put(list(args))
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def check_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 = self._nodes.values()
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elif target == 'online':
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nodes = [n for n in 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_node(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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self._nodes[user_id] = Node(self, User.get_or_create(user_id))
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'''
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else:
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self._nodes[user_id].online = True
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trigger_event('status', {
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'id': user_id,
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'status': 'online'
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})
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'''
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def run(self):
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with self._app.app_context():
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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] == 'add':
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self._add_node(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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return Thread.join(self)
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