637 lines
29 KiB
Python
Executable File
637 lines
29 KiB
Python
Executable File
#!/usr/bin/env python3
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'''
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Onionr - P2P Anonymous Storage Network
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This file contains both the OnionrCommunicate class for communcating with peers
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and code to operate as a daemon, getting commands from the command queue database (see core.Core.daemonQueue)
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'''
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'''
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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'''
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import sys, os, core, config, json, requests, time, logger, threading, base64, onionr, uuid, binascii
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from dependencies import secrets
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from utils import networkmerger
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import onionrexceptions, onionrpeers, onionrevents as events, onionrplugins as plugins, onionrblockapi as block
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from communicatorutils import onionrdaemontools
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from communicatorutils import servicecreator
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import onionrservices, onionr, onionrproofs
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from communicatorutils import onionrcommunicatortimers, proxypicker
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OnionrCommunicatorTimers = onionrcommunicatortimers.OnionrCommunicatorTimers
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config.reload()
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class OnionrCommunicatorDaemon:
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def __init__(self, onionrInst, proxyPort, developmentMode=config.get('general.dev_mode', False)):
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onionrInst.communicatorInst = self
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# configure logger and stuff
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onionr.Onionr.setupConfig('data/', self = self)
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self.proxyPort = proxyPort
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self.isOnline = True # Assume we're connected to the internet
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# list of timer instances
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self.timers = []
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# initialize core with Tor socks port being 3rd argument
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self.proxyPort = proxyPort
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self._core = onionrInst.onionrCore
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self.blocksToUpload = []
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# loop time.sleep delay in seconds
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self.delay = 1
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# lists of connected peers and peers we know we can't reach currently
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self.onlinePeers = []
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self.offlinePeers = []
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self.cooldownPeer = {}
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self.connectTimes = {}
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self.peerProfiles = [] # list of peer's profiles (onionrpeers.PeerProfile instances)
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self.newPeers = [] # Peers merged to us. Don't add to db until we know they're reachable
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# amount of threads running by name, used to prevent too many
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self.threadCounts = {}
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# set true when shutdown command received
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self.shutdown = False
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# list of new blocks to download, added to when new block lists are fetched from peers
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self.blockQueue = {}
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# list of blocks currently downloading, avoid s
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self.currentDownloading = []
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# timestamp when the last online node was seen
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self.lastNodeSeen = None
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# Dict of time stamps for peer's block list lookup times, to avoid downloading full lists all the time
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self.dbTimestamps = {}
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# Clear the daemon queue for any dead messages
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if os.path.exists(self._core.queueDB):
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self._core.clearDaemonQueue()
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# Loads in and starts the enabled plugins
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plugins.reload()
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# daemon tools are misc daemon functions, e.g. announce to online peers
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# intended only for use by OnionrCommunicatorDaemon
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self.daemonTools = onionrdaemontools.DaemonTools(self)
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# time app started running for info/statistics purposes
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self.startTime = self._core._utils.getEpoch()
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if developmentMode:
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OnionrCommunicatorTimers(self, self.heartbeat, 30)
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# Set timers, function reference, seconds
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# requiresPeer True means the timer function won't fire if we have no connected peers
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peerPoolTimer = OnionrCommunicatorTimers(self, self.getOnlinePeers, 60, maxThreads=1)
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OnionrCommunicatorTimers(self, self.runCheck, 2, maxThreads=1)
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OnionrCommunicatorTimers(self, self.lookupBlocks, self._core.config.get('timers.lookupBlocks'), requiresPeer=True, maxThreads=1)
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OnionrCommunicatorTimers(self, self.getBlocks, self._core.config.get('timers.getBlocks'), requiresPeer=True, maxThreads=2)
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OnionrCommunicatorTimers(self, self.clearOfflinePeer, 58)
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blockCleanupTimer = OnionrCommunicatorTimers(self, self.daemonTools.cleanOldBlocks, 65)
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OnionrCommunicatorTimers(self, self.lookupAdders, 60, requiresPeer=True)
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OnionrCommunicatorTimers(self, self.daemonTools.cooldownPeer, 30, requiresPeer=True)
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OnionrCommunicatorTimers(self, self.uploadBlock, 10, requiresPeer=True, maxThreads=1)
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OnionrCommunicatorTimers(self, self.daemonCommands, 6, maxThreads=1)
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OnionrCommunicatorTimers(self, self.detectAPICrash, 30, maxThreads=1)
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if config.get('general.socket_servers', False):
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self.services = onionrservices.OnionrServices(self._core)
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self.active_services = []
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self.service_greenlets = []
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OnionrCommunicatorTimers(self, servicecreator.service_creator, 5, maxThreads=50, myArgs=(self,))
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else:
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self.services = None
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deniableBlockTimer = OnionrCommunicatorTimers(self, self.daemonTools.insertDeniableBlock, 180, requiresPeer=True, maxThreads=1)
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netCheckTimer = OnionrCommunicatorTimers(self, self.daemonTools.netCheck, 600)
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if config.get('general.security_level') == 0:
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announceTimer = OnionrCommunicatorTimers(self, self.daemonTools.announceNode, 3600, requiresPeer=True, maxThreads=1)
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announceTimer.count = (announceTimer.frequency - 120)
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else:
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logger.debug('Will not announce node.')
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cleanupTimer = OnionrCommunicatorTimers(self, self.peerCleanup, 300, requiresPeer=True)
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forwardSecrecyTimer = OnionrCommunicatorTimers(self, self.daemonTools.cleanKeys, 15, maxThreads=1)
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# set loop to execute instantly to load up peer pool (replaced old pool init wait)
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peerPoolTimer.count = (peerPoolTimer.frequency - 1)
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cleanupTimer.count = (cleanupTimer.frequency - 60)
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deniableBlockTimer.count = (deniableBlockTimer.frequency - 175)
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blockCleanupTimer.count = (blockCleanupTimer.frequency - 5)
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#forwardSecrecyTimer.count = (forwardSecrecyTimer.frequency - 990)
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# Main daemon loop, mainly for calling timers, don't do any complex operations here to avoid locking
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try:
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while not self.shutdown:
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for i in self.timers:
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if self.shutdown:
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break
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i.processTimer()
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time.sleep(self.delay)
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# Debug to print out used FDs (regular and net)
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#proc = psutil.Process()
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#print(proc.open_files(), len(psutil.net_connections()))
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except KeyboardInterrupt:
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self.shutdown = True
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pass
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logger.info('Goodbye.')
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for server in self.service_greenlets:
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server.stop()
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self._core._utils.localCommand('shutdown') # shutdown the api
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time.sleep(0.5)
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def lookupAdders(self):
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'''Lookup new peer addresses'''
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logger.info('Looking up new addresses...')
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tryAmount = 1
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newPeers = []
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for i in range(tryAmount):
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# Download new peer address list from random online peers
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if len(newPeers) > 10000:
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# Dont get new peers if we have too many queued up
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break
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peer = self.pickOnlinePeer()
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newAdders = self.peerAction(peer, action='pex')
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try:
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newPeers = newAdders.split(',')
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except AttributeError:
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pass
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else:
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# Validate new peers are good format and not already in queue
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invalid = []
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for x in newPeers:
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x = x.strip()
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if not self._core._utils.validateID(x) or x in self.newPeers or x == self._core.hsAddress:
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invalid.append(x)
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for x in invalid:
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newPeers.remove(x)
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self.newPeers.extend(newPeers)
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self.decrementThreadCount('lookupAdders')
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def lookupBlocks(self):
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'''Lookup new blocks & add them to download queue'''
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logger.info('Looking up new blocks...')
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tryAmount = 2
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newBlocks = ''
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existingBlocks = self._core.getBlockList()
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triedPeers = [] # list of peers we've tried this time around
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maxBacklog = 1560 # Max amount of *new* block hashes to have already in queue, to avoid memory exhaustion
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lastLookupTime = 0 # Last time we looked up a particular peer's list
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for i in range(tryAmount):
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listLookupCommand = 'getblocklist' # This is defined here to reset it each time
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if len(self.blockQueue) >= maxBacklog:
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break
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if not self.isOnline:
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break
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# check if disk allocation is used
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if self._core._utils.storageCounter.isFull():
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logger.debug('Not looking up new blocks due to maximum amount of allowed disk space used')
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break
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peer = self.pickOnlinePeer() # select random online peer
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# if we've already tried all the online peers this time around, stop
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if peer in triedPeers:
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if len(self.onlinePeers) == len(triedPeers):
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break
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else:
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continue
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triedPeers.append(peer)
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# Get the last time we looked up a peer's stamp to only fetch blocks since then.
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# Saved in memory only for privacy reasons
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try:
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lastLookupTime = self.dbTimestamps[peer]
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except KeyError:
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lastLookupTime = 0
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else:
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listLookupCommand += '?date=%s' % (lastLookupTime,)
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try:
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newBlocks = self.peerAction(peer, listLookupCommand) # get list of new block hashes
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except Exception as error:
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logger.warn('Could not get new blocks from %s.' % peer, error = error)
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newBlocks = False
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else:
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self.dbTimestamps[peer] = self._core._utils.getRoundedEpoch(roundS=60)
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if newBlocks != False:
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# if request was a success
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for i in newBlocks.split('\n'):
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if self._core._utils.validateHash(i):
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# if newline seperated string is valid hash
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if not i in existingBlocks:
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# if block does not exist on disk and is not already in block queue
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if i not in self.blockQueue:
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if onionrproofs.hashMeetsDifficulty(i) and not self._core._blacklist.inBlacklist(i):
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if len(self.blockQueue) <= 1000000:
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self.blockQueue[i] = [peer] # add blocks to download queue
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else:
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if peer not in self.blockQueue[i]:
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if len(self.blockQueue[i]) < 10:
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self.blockQueue[i].append(peer)
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self.decrementThreadCount('lookupBlocks')
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return
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def getBlocks(self):
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'''download new blocks in queue'''
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for blockHash in list(self.blockQueue):
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triedQueuePeers = [] # List of peers we've tried for a block
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try:
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blockPeers = list(self.blockQueue[blockHash])
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except KeyError:
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blockPeers = []
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removeFromQueue = True
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if self.shutdown or not self.isOnline:
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# Exit loop if shutting down or offline
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break
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# Do not download blocks being downloaded or that are already saved (edge cases)
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if blockHash in self.currentDownloading:
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#logger.debug('Already downloading block %s...' % blockHash)
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continue
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if blockHash in self._core.getBlockList():
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#logger.debug('Block %s is already saved.' % (blockHash,))
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try:
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del self.blockQueue[blockHash]
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except KeyError:
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pass
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continue
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if self._core._blacklist.inBlacklist(blockHash):
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continue
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if self._core._utils.storageCounter.isFull():
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break
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self.currentDownloading.append(blockHash) # So we can avoid concurrent downloading in other threads of same block
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if len(blockPeers) == 0:
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peerUsed = self.pickOnlinePeer()
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else:
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blockPeers = self._core._crypto.randomShuffle(blockPeers)
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peerUsed = blockPeers.pop(0)
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if not self.shutdown and peerUsed.strip() != '':
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logger.info("Attempting to download %s from %s..." % (blockHash[:12], peerUsed))
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content = self.peerAction(peerUsed, 'getdata/' + blockHash) # block content from random peer (includes metadata)
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if content != False and len(content) > 0:
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try:
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content = content.encode()
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except AttributeError:
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pass
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realHash = self._core._crypto.sha3Hash(content)
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try:
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realHash = realHash.decode() # bytes on some versions for some reason
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except AttributeError:
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pass
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if realHash == blockHash:
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content = content.decode() # decode here because sha3Hash needs bytes above
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metas = self._core._utils.getBlockMetadataFromData(content) # returns tuple(metadata, meta), meta is also in metadata
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metadata = metas[0]
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if self._core._utils.validateMetadata(metadata, metas[2]): # check if metadata is valid, and verify nonce
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if self._core._crypto.verifyPow(content): # check if POW is enough/correct
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logger.info('Attempting to save block %s...' % blockHash[:12])
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try:
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self._core.setData(content)
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except onionrexceptions.DiskAllocationReached:
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logger.error('Reached disk allocation allowance, cannot save block %s.' % blockHash)
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removeFromQueue = False
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else:
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self._core.addToBlockDB(blockHash, dataSaved=True)
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self._core._utils.processBlockMetadata(blockHash) # caches block metadata values to block database
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else:
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logger.warn('POW failed for block %s.' % blockHash)
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else:
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if self._core._blacklist.inBlacklist(realHash):
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logger.warn('Block %s is blacklisted.' % (realHash,))
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else:
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logger.warn('Metadata for block %s is invalid.' % blockHash)
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self._core._blacklist.addToDB(blockHash)
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else:
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# if block didn't meet expected hash
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tempHash = self._core._crypto.sha3Hash(content) # lazy hack, TODO use var
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try:
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tempHash = tempHash.decode()
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except AttributeError:
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pass
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# Punish peer for sharing invalid block (not always malicious, but is bad regardless)
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onionrpeers.PeerProfiles(peerUsed, self._core).addScore(-50)
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if tempHash != 'ed55e34cb828232d6c14da0479709bfa10a0923dca2b380496e6b2ed4f7a0253':
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# Dumb hack for 404 response from peer. Don't log it if 404 since its likely not malicious or a critical error.
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logger.warn('Block hash validation failed for ' + blockHash + ' got ' + tempHash)
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else:
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removeFromQueue = False # Don't remove from queue if 404
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if removeFromQueue:
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try:
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del self.blockQueue[blockHash] # remove from block queue both if success or false
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except KeyError:
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pass
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self.currentDownloading.remove(blockHash)
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self.decrementThreadCount('getBlocks')
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return
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def pickOnlinePeer(self):
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'''randomly picks peer from pool without bias (using secrets module)'''
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retData = ''
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while True:
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peerLength = len(self.onlinePeers)
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if peerLength <= 0:
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break
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try:
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# get a random online peer, securely. May get stuck in loop if network is lost or if all peers in pool magically disconnect at once
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retData = self.onlinePeers[self._core._crypto.secrets.randbelow(peerLength)]
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except IndexError:
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pass
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else:
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break
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return retData
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def decrementThreadCount(self, threadName):
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'''Decrement amount of a thread name if more than zero, called when a function meant to be run in a thread ends'''
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try:
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if self.threadCounts[threadName] > 0:
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self.threadCounts[threadName] -= 1
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except KeyError:
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pass
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def clearOfflinePeer(self):
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'''Removes the longest offline peer to retry later'''
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try:
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removed = self.offlinePeers.pop(0)
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except IndexError:
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pass
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else:
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logger.debug('Removed ' + removed + ' from offline list, will try them again.')
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self.decrementThreadCount('clearOfflinePeer')
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def getOnlinePeers(self):
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'''
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Manages the self.onlinePeers attribute list, connects to more peers if we have none connected
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'''
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logger.debug('Refreshing peer pool...')
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maxPeers = int(config.get('peers.max_connect', 10))
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needed = maxPeers - len(self.onlinePeers)
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for i in range(needed):
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if len(self.onlinePeers) == 0:
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self.connectNewPeer(useBootstrap=True)
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else:
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self.connectNewPeer()
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if self.shutdown:
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break
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else:
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if len(self.onlinePeers) == 0:
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logger.debug('Couldn\'t connect to any peers.' + (' Last node seen %s ago.' % self.daemonTools.humanReadableTime(time.time() - self.lastNodeSeen) if not self.lastNodeSeen is None else ''))
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else:
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self.lastNodeSeen = time.time()
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self.decrementThreadCount('getOnlinePeers')
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def addBootstrapListToPeerList(self, peerList):
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'''
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Add the bootstrap list to the peer list (no duplicates)
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'''
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for i in self._core.bootstrapList:
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if i not in peerList and i not in self.offlinePeers and i != self._core.hsAddress and len(str(i).strip()) > 0:
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peerList.append(i)
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self._core.addAddress(i)
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def connectNewPeer(self, peer='', useBootstrap=False):
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'''Adds a new random online peer to self.onlinePeers'''
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retData = False
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tried = self.offlinePeers
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if peer != '':
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if self._core._utils.validateID(peer):
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peerList = [peer]
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else:
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raise onionrexceptions.InvalidAddress('Will not attempt connection test to invalid address')
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else:
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peerList = self._core.listAdders()
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mainPeerList = self._core.listAdders()
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peerList = onionrpeers.getScoreSortedPeerList(self._core)
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if len(peerList) < 8 or secrets.randbelow(4) == 3:
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tryingNew = []
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for x in self.newPeers:
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if x not in peerList:
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peerList.append(x)
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tryingNew.append(x)
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for i in tryingNew:
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self.newPeers.remove(i)
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if len(peerList) == 0 or useBootstrap:
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# Avoid duplicating bootstrap addresses in peerList
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self.addBootstrapListToPeerList(peerList)
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for address in peerList:
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if not config.get('tor.v3onions') and len(address) == 62:
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continue
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if address == self._core.hsAddress:
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continue
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if len(address) == 0 or address in tried or address in self.onlinePeers or address in self.cooldownPeer:
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continue
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if self.shutdown:
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return
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if self.peerAction(address, 'ping') == 'pong!':
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time.sleep(0.1)
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if address not in mainPeerList:
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networkmerger.mergeAdders(address, self._core)
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if address not in self.onlinePeers:
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logger.info('Connected to ' + address)
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self.onlinePeers.append(address)
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self.connectTimes[address] = self._core._utils.getEpoch()
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retData = address
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# add peer to profile list if they're not in it
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for profile in self.peerProfiles:
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if profile.address == address:
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break
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else:
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self.peerProfiles.append(onionrpeers.PeerProfiles(address, self._core))
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break
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else:
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tried.append(address)
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logger.debug('Failed to connect to ' + address)
|
|
return retData
|
|
|
|
def removeOnlinePeer(self, peer):
|
|
'''Remove an online peer'''
|
|
try:
|
|
del self.connectTimes[peer]
|
|
except KeyError:
|
|
pass
|
|
try:
|
|
del self.dbTimestamps[peer]
|
|
except KeyError:
|
|
pass
|
|
try:
|
|
self.onlinePeers.remove(peer)
|
|
except ValueError:
|
|
pass
|
|
|
|
def peerCleanup(self):
|
|
'''This just calls onionrpeers.cleanupPeers, which removes dead or bad peers (offline too long, too slow)'''
|
|
onionrpeers.peerCleanup(self._core)
|
|
self.decrementThreadCount('peerCleanup')
|
|
|
|
def printOnlinePeers(self):
|
|
'''logs online peer list'''
|
|
if len(self.onlinePeers) == 0:
|
|
logger.warn('No online peers')
|
|
else:
|
|
logger.info('Online peers:')
|
|
for i in self.onlinePeers:
|
|
score = str(self.getPeerProfileInstance(i).score)
|
|
logger.info(i + ', score: ' + score)
|
|
|
|
def peerAction(self, peer, action, data='', returnHeaders=False):
|
|
'''Perform a get request to a peer'''
|
|
if len(peer) == 0:
|
|
return False
|
|
#logger.debug('Performing ' + action + ' with ' + peer + ' on port ' + str(self.proxyPort))
|
|
url = 'http://%s/%s' % (peer, action)
|
|
if len(data) > 0:
|
|
url += '&data=' + data
|
|
|
|
self._core.setAddressInfo(peer, 'lastConnectAttempt', self._core._utils.getEpoch()) # mark the time we're trying to request this peer
|
|
|
|
retData = self._core._utils.doGetRequest(url, port=self.proxyPort)
|
|
# if request failed, (error), mark peer offline
|
|
if retData == False:
|
|
try:
|
|
self.getPeerProfileInstance(peer).addScore(-10)
|
|
self.removeOnlinePeer(peer)
|
|
if action != 'ping':
|
|
self.getOnlinePeers() # Will only add a new peer to pool if needed
|
|
except ValueError:
|
|
pass
|
|
else:
|
|
self._core.setAddressInfo(peer, 'lastConnect', self._core._utils.getEpoch())
|
|
self.getPeerProfileInstance(peer).addScore(1)
|
|
return retData # If returnHeaders, returns tuple of data, headers. if not, just data string
|
|
|
|
def getPeerProfileInstance(self, peer):
|
|
'''Gets a peer profile instance from the list of profiles, by address name'''
|
|
for i in self.peerProfiles:
|
|
# if the peer's profile is already loaded, return that
|
|
if i.address == peer:
|
|
retData = i
|
|
break
|
|
else:
|
|
# if the peer's profile is not loaded, return a new one. connectNewPeer adds it the list on connect
|
|
retData = onionrpeers.PeerProfiles(peer, self._core)
|
|
return retData
|
|
|
|
def getUptime(self):
|
|
return self._core._utils.getEpoch() - self.startTime
|
|
|
|
def heartbeat(self):
|
|
'''Show a heartbeat debug message'''
|
|
logger.debug('Heartbeat. Node running for %s.' % self.daemonTools.humanReadableTime(self.getUptime()))
|
|
self.decrementThreadCount('heartbeat')
|
|
|
|
def daemonCommands(self):
|
|
'''
|
|
Process daemon commands from daemonQueue
|
|
'''
|
|
cmd = self._core.daemonQueue()
|
|
response = ''
|
|
if cmd is not False:
|
|
events.event('daemon_command', onionr = None, data = {'cmd' : cmd})
|
|
if cmd[0] == 'shutdown':
|
|
self.shutdown = True
|
|
elif cmd[0] == 'announceNode':
|
|
if len(self.onlinePeers) > 0:
|
|
self.announce(cmd[1])
|
|
else:
|
|
logger.debug("No nodes connected. Will not introduce node.")
|
|
elif cmd[0] == 'runCheck': # deprecated
|
|
logger.debug('Status check; looks good.')
|
|
open(self._core.dataDir + '.runcheck', 'w+').close()
|
|
elif cmd[0] == 'connectedPeers':
|
|
response = '\n'.join(list(self.onlinePeers)).strip()
|
|
if response == '':
|
|
response = 'none'
|
|
elif cmd[0] == 'localCommand':
|
|
response = self._core._utils.localCommand(cmd[1])
|
|
elif cmd[0] == 'pex':
|
|
for i in self.timers:
|
|
if i.timerFunction.__name__ == 'lookupAdders':
|
|
i.count = (i.frequency - 1)
|
|
elif cmd[0] == 'uploadBlock':
|
|
self.blocksToUpload.append(cmd[1])
|
|
|
|
if cmd[0] not in ('', None):
|
|
if response != '':
|
|
self._core._utils.localCommand('queueResponseAdd/' + cmd[4], post=True, postData={'data': response})
|
|
response = ''
|
|
|
|
self.decrementThreadCount('daemonCommands')
|
|
|
|
def uploadBlock(self):
|
|
'''Upload our block to a few peers'''
|
|
# when inserting a block, we try to upload it to a few peers to add some deniability
|
|
triedPeers = []
|
|
finishedUploads = []
|
|
self.blocksToUpload = self._core._crypto.randomShuffle(self.blocksToUpload)
|
|
if len(self.blocksToUpload) != 0:
|
|
for bl in self.blocksToUpload:
|
|
if not self._core._utils.validateHash(bl):
|
|
logger.warn('Requested to upload invalid block')
|
|
self.decrementThreadCount('uploadBlock')
|
|
return
|
|
for i in range(min(len(self.onlinePeers), 6)):
|
|
peer = self.pickOnlinePeer()
|
|
if peer in triedPeers:
|
|
continue
|
|
triedPeers.append(peer)
|
|
url = 'http://' + peer + '/upload'
|
|
data = {'block': block.Block(bl).getRaw()}
|
|
proxyType = proxypicker.pick_proxy(peer)
|
|
logger.info("Uploading block to " + peer)
|
|
if not self._core._utils.doPostRequest(url, data=data, proxyType=proxyType) == False:
|
|
self._core._utils.localCommand('waitforshare/' + bl, post=True)
|
|
finishedUploads.append(bl)
|
|
for x in finishedUploads:
|
|
try:
|
|
self.blocksToUpload.remove(x)
|
|
except ValueError:
|
|
pass
|
|
self.decrementThreadCount('uploadBlock')
|
|
|
|
def announce(self, peer):
|
|
'''Announce to peers our address'''
|
|
if self.daemonTools.announceNode() == False:
|
|
logger.warn('Could not introduce node.')
|
|
|
|
def detectAPICrash(self):
|
|
'''exit if the api server crashes/stops'''
|
|
if self._core._utils.localCommand('ping', silent=False) not in ('pong', 'pong!'):
|
|
for i in range(8):
|
|
if self._core._utils.localCommand('ping') in ('pong', 'pong!') or self.shutdown:
|
|
break # break for loop
|
|
time.sleep(1)
|
|
else:
|
|
# This executes if the api is NOT detected to be running
|
|
events.event('daemon_crash', onionr = None, data = {})
|
|
logger.error('Daemon detected API crash (or otherwise unable to reach API after long time), stopping...')
|
|
self.shutdown = True
|
|
self.decrementThreadCount('detectAPICrash')
|
|
|
|
def runCheck(self):
|
|
if self.daemonTools.runCheck():
|
|
logger.debug('Status check; looks good.')
|
|
|
|
self.decrementThreadCount('runCheck')
|
|
|
|
def startCommunicator(onionrInst, proxyPort):
|
|
OnionrCommunicatorDaemon(onionrInst, proxyPort) |