Onionr/onionr/communicator/__init__.py

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'''
Onionr - Private P2P Communication
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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 <https://www.gnu.org/licenses/>.
'''
import sys, os, time
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import config, logger
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import onionrexceptions, onionrpeers, onionrevents as events, onionrplugins as plugins, onionrblockapi as block
from . import onlinepeers, uploadqueue
from communicatorutils import servicecreator, onionrcommunicatortimers
from communicatorutils import downloadblocks, lookupblocks, lookupadders
from communicatorutils import servicecreator, connectnewpeers
from communicatorutils import uploadblocks
from communicatorutils import daemonqueuehandler, announcenode, deniableinserts
from communicatorutils import cooldownpeer, housekeeping, netcheck
from onionrutils import localcommand, epoch
from etc import humanreadabletime
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import onionrservices, filepaths, storagecounter
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from coredb import daemonqueue, dbfiles
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from utils import gettransports
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from netcontroller import NetController
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OnionrCommunicatorTimers = onionrcommunicatortimers.OnionrCommunicatorTimers
config.reload()
class OnionrCommunicatorDaemon:
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def __init__(self, shared_state, developmentMode=config.get('general.dev_mode', False)):
# configure logger and stuff
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self.config = config
self.storage_counter = storagecounter.StorageCounter()
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self.isOnline = True # Assume we're connected to the internet
self.shared_state = shared_state # TooManyObjects module
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# list of timer instances
self.timers = []
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# initialize core with Tor socks port being 3rd argument
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self.proxyPort = shared_state.get(NetController).socksPort
# Upload information, list of blocks to upload
self.blocksToUpload = []
self.upload_session_manager = self.shared_state.get(uploadblocks.sessionmanager.BlockUploadSessionManager)
self.shared_state.share_object()
# loop time.sleep delay in seconds
self.delay = 1
# lists of connected peers and peers we know we can't reach currently
self.onlinePeers = []
self.offlinePeers = []
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self.cooldownPeer = {}
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
self.announceProgress = {}
self.announceCache = {}
self.generating_blocks = []
# amount of threads running by name, used to prevent too many
self.threadCounts = {}
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# set true when shutdown command received
self.shutdown = False
# 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
self.currentDownloading = []
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# timestamp when the last online node was seen
self.lastNodeSeen = None
# Dict of time stamps for peer's block list lookup times, to avoid downloading full lists all the time
self.dbTimestamps = {}
# Clear the daemon queue for any dead messages
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if os.path.exists(dbfiles.daemon_queue_db):
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daemonqueue.clear_daemon_queue()
# Loads in and starts the enabled plugins
plugins.reload()
# time app started running for info/statistics purposes
self.startTime = epoch.get_epoch()
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uploadqueue.UploadQueue(self) # extends our upload list and saves our list when Onionr exits
if developmentMode:
OnionrCommunicatorTimers(self, self.heartbeat, 30)
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# Set timers, function reference, seconds
# requires_peer True means the timer function won't fire if we have no connected peers
peerPoolTimer = OnionrCommunicatorTimers(self, onlinepeers.get_online_peers, 60, max_threads=1, my_args=[self])
OnionrCommunicatorTimers(self, self.runCheck, 2, max_threads=1)
# Timers to periodically lookup new blocks and download them
lookup_blocks_timer = OnionrCommunicatorTimers(self, lookupblocks.lookup_blocks_from_communicator, config.get('timers.lookupBlocks', 25), my_args=[self], requires_peer=True, max_threads=1)
# The block download timer is accessed by the block lookup function to trigger faster download starts
self.download_blocks_timer = OnionrCommunicatorTimers(self, self.getBlocks, config.get('timers.getBlocks', 10), requires_peer=True, max_threads=5)
# Timer to reset the longest offline peer so contact can be attempted again
OnionrCommunicatorTimers(self, onlinepeers.clear_offline_peer, 58, my_args=[self])
# Timer to cleanup old blocks
blockCleanupTimer = OnionrCommunicatorTimers(self, housekeeping.clean_old_blocks, 20, my_args=[self])
# Timer to discover new peers
OnionrCommunicatorTimers(self, lookupadders.lookup_new_peer_transports_with_communicator, 60, requires_peer=True, my_args=[self], max_threads=2)
# Timer for adjusting which peers we actively communicate to at any given time, to avoid over-using peers
OnionrCommunicatorTimers(self, cooldownpeer.cooldown_peer, 30, my_args=[self], requires_peer=True)
# Timer to read the upload queue and upload the entries to peers
OnionrCommunicatorTimers(self, uploadblocks.upload_blocks_from_communicator, 5, my_args=[self], requires_peer=True, max_threads=1)
# Timer to process the daemon command queue
OnionrCommunicatorTimers(self, daemonqueuehandler.handle_daemon_commands, 6, my_args=[self], max_threads=3)
# Setup direct connections
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if config.get('general.socket_servers', False):
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self.services = onionrservices.OnionrServices()
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self.active_services = []
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self.service_greenlets = []
OnionrCommunicatorTimers(self, servicecreator.service_creator, 5, max_threads=50, my_args=[self])
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else:
self.services = None
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# {peer_pubkey: ephemeral_address}, the address to reach them
self.direct_connection_clients = {}
# This timer creates deniable blocks, in an attempt to further obfuscate block insertion metadata
if config.get('general.insert_deniable_blocks', True):
deniableBlockTimer = OnionrCommunicatorTimers(self, deniableinserts.insert_deniable_block, 180, my_args=[self], requires_peer=True, max_threads=1)
deniableBlockTimer.count = (deniableBlockTimer.frequency - 175)
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# Timer to check for connectivity, through Tor to various high-profile onion services
netCheckTimer = OnionrCommunicatorTimers(self, netcheck.net_check, 500, my_args=[self], max_threads=1)
# Announce the public API server transport address to other nodes if security level allows
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if config.get('general.security_level', 1) == 0 and config.get('general.announce_node', True):
# Default to high security level incase config breaks
announceTimer = OnionrCommunicatorTimers(self, announcenode.announce_node, 3600, my_args=[self], requires_peer=True, max_threads=1)
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announceTimer.count = (announceTimer.frequency - 120)
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else:
logger.debug('Will not announce node.')
# Timer to delete malfunctioning or long-dead peers
cleanupTimer = OnionrCommunicatorTimers(self, self.peerCleanup, 300, requires_peer=True)
# Timer to cleanup dead ephemeral forward secrecy keys
forwardSecrecyTimer = OnionrCommunicatorTimers(self, housekeeping.clean_keys, 15, my_args=[self], max_threads=1)
# Adjust initial timer triggers
peerPoolTimer.count = (peerPoolTimer.frequency - 1)
cleanupTimer.count = (cleanupTimer.frequency - 60)
blockCleanupTimer.count = (blockCleanupTimer.frequency - 2)
lookup_blocks_timer = (lookup_blocks_timer.frequency - 2)
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shared_state.add(self)
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# Main daemon loop, mainly for calling timers, don't do any complex operations here to avoid locking
try:
while not self.shutdown:
for i in self.timers:
if self.shutdown:
break
i.processTimer()
time.sleep(self.delay)
# Debug to print out used FDs (regular and net)
#proc = psutil.Process()
#print(proc.open_files(), len(psutil.net_connections()))
except KeyboardInterrupt:
self.shutdown = True
pass
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logger.info('Goodbye. (Onionr is cleaning up, and will exit)', terminal=True)
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try:
self.service_greenlets
except AttributeError:
pass
else:
for server in self.service_greenlets:
server.stop()
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localcommand.local_command('shutdown') # shutdown the api
try:
time.sleep(0.5)
except KeyboardInterrupt:
pass
def getBlocks(self):
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'''download new blocks in queue'''
downloadblocks.download_blocks_from_communicator(self)
def decrementThreadCount(self, threadName):
'''Decrement amount of a thread name if more than zero, called when a function meant to be run in a thread ends'''
try:
if self.threadCounts[threadName] > 0:
self.threadCounts[threadName] -= 1
except KeyError:
pass
def connectNewPeer(self, peer='', useBootstrap=False):
'''Adds a new random online peer to self.onlinePeers'''
connectnewpeers.connect_new_peer_to_communicator(self, peer, useBootstrap)
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def peerCleanup(self):
'''This just calls onionrpeers.cleanupPeers, which removes dead or bad peers (offline too long, too slow)'''
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onionrpeers.peer_cleanup()
self.decrementThreadCount('peerCleanup')
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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 also adds it to the list on connect
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retData = onionrpeers.PeerProfiles(peer)
self.peerProfiles.append(retData)
return retData
def getUptime(self):
return epoch.get_epoch() - self.startTime
def heartbeat(self):
'''Show a heartbeat debug message'''
logger.debug('Heartbeat. Node running for %s.' % humanreadabletime.human_readable_time(self.getUptime()))
self.decrementThreadCount('heartbeat')
def runCheck(self):
if run_file_exists(self):
logger.debug('Status check; looks good.')
self.decrementThreadCount('runCheck')
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def startCommunicator(shared_state):
OnionrCommunicatorDaemon(shared_state)
def run_file_exists(daemon):
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if os.path.isfile(filepaths.run_check_file):
os.remove(filepaths.run_check_file)
return True
return False