#!/usr/bin/env python3 ''' Onionr - P2P Microblogging Platform & Social network. This file contains both the OnionrCommunicate class for communcating with peers and code to operate as a daemon, getting commands from the command queue database (see core.Core.daemonQueue) ''' ''' This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . ''' import sqlite3, requests, hmac, hashlib, time, sys, os, logger import core, onionrutils class OnionrCommunicate: def __init__(self, debug, developmentMode): ''' OnionrCommunicate This class handles communication with nodes in the Onionr network. ''' self._core = core.Core() self._utils = onionrutils.OnionrUtils(self._core) blockProcessTimer = 0 blockProcessAmount = 5 heartBeatTimer = 0 heartBeatRate = 10 logger.debug('Communicator debugging enabled.') torID = open('data/hs/hostname').read() # get our own PGP fingerprint fingerprintFile = 'data/own-fingerprint.txt' if not os.path.exists(fingerprintFile): self._core.generateMainPGP(torID) with open(fingerprintFile,'r') as f: self.pgpOwnFingerprint = f.read() logger.info('My PGP fingerprint is ' + logger.colors.underline + self.pgpOwnFingerprint + logger.colors.reset + logger.colors.fg.green + '.') if os.path.exists(self._core.queueDB): self._core.clearDaemonQueue() while True: command = self._core.daemonQueue() # Process blocks based on a timer blockProcessTimer += 1 heartBeatTimer += 1 if heartBeatRate == heartBeatTimer: logger.debug('Communicator heartbeat') heartBeatTimer = 0 if blockProcessTimer == blockProcessAmount: self.lookupBlocks() self.processBlocks() blockProcessTimer = 0 #logger.debug('Communicator daemon heartbeat') if command != False: if command[0] == 'shutdown': logger.warn('Daemon recieved exit command.') break time.sleep(1) return def getRemotePeerKey(self, peerID): '''This function contacts a peer and gets their main PGP key. This is safe because Tor or I2P is used, but it does not ensure that the person is who they say they are ''' url = 'http://' + peerID + '/public/?action=getPGP' r = requests.get(url, headers=headers) response = r.text return response def shareHMAC(self, peerID, key): '''This function shares an HMAC key to a peer ''' return def getPeerProof(self, peerID): '''This function gets the current peer proof requirement''' return def sendPeerProof(self, peerID, data): '''This function sends the proof result to a peer previously fetched with getPeerProof''' return def lookupBlocks(self): '''Lookup blocks and merge new ones''' peerList = self._core.listPeers() blocks = '' for i in peerList: lastDB = self._core.getPeerInfo(i, 'blockDBHash') if lastDB == None: logger.debug('Fetching hash from ' + i + ' No previous known.') else: logger.debug('Fetching hash from ' + i + ', ' + lastDB + ' last known') currentDB = self.performGet('getDBHash', i) if currentDB != False: if lastDB != currentDB: logger.debug('Fetching hash from ' + i + ' - ' + currentDB + ' current hash.') blocks += self.performGet('getBlockHashes', i) if currentDB != lastDB: if self._utils.validateHash(currentDB): self._core.setPeerInfo(i, "blockDBHash", currentDB) else: logger.warn("Peer " + i + " returned malformed hash") blockList = blocks.split('\n') for i in blockList: logger.debug('Exchanged block (blockList): ' + i) if not self._utils.validateHash(i): # skip hash if it isn't valid logger.warn('Hash ' + i + ' is not valid') continue else: logger.debug('Adding ' + i + ' to hash database...') self._core.addToBlockDB(i) return def processBlocks(self): ''' Work with the block database and download any missing blocks This is meant to be called from the communicator daemon on its timer. ''' for i in self._core.getBlockList(True).split("\n"): if i != "": logger.warn('UNSAVED BLOCK: ' + i) data = self.downloadBlock(i) return def downloadBlock(self, hash): peerList = self._core.listPeers() blocks = '' for i in peerList: hasher = hashlib.sha3_256() data = self.performGet('getData', i, hash) if data == False or len(data) > 10000000: continue hasher.update(data.encode()) if hasher.hexdigest() == hash: self._core.setData(data) logger.info('Successfully obtained data for ' + hash) def performGet(self, action, peer, data=None, type='tor'): '''Performs a request to a peer through Tor or i2p (currently only tor)''' if not peer.endswith('.onion') and not peer.endswith('.onion/'): raise PeerError('Currently only Tor .onion peers are supported. You must manually specify .onion') socksPort = sys.argv[2] '''We use socks5h to use tor as DNS''' proxies = {'http': 'socks5h://127.0.0.1:' + str(socksPort), 'https': 'socks5h://127.0.0.1:' + str(socksPort)} headers = {'user-agent': 'PyOnionr'} url = 'http://' + peer + '/public/?action=' + action if data != None: url = url + '&data=' + data try: r = requests.get(url, headers=headers, proxies=proxies) except requests.exceptions.RequestException as e: logger.warn(action + " failed with peer " + peer + ": " + str(e)) return False return r.text shouldRun = False debug = True developmentMode = False if os.path.exists('dev-enabled'): developmentMode = True try: if sys.argv[1] == 'run': shouldRun = True except IndexError: pass if shouldRun: try: OnionrCommunicate(debug, developmentMode) except KeyboardInterrupt: pass