534 lines
23 KiB
Python
Executable File
534 lines
23 KiB
Python
Executable File
#!/usr/bin/env python3
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'''
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Onionr - P2P Microblogging Platform & Social 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
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import onionrexceptions, onionrpeers, onionrevents as events, onionrplugins as plugins, onionrblockapi as block
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import onionrdaemontools
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from defusedxml import minidom
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class OnionrCommunicatorDaemon:
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def __init__(self, debug, developmentMode):
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# list of timer instances
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self.timers = []
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# initalize core with Tor socks port being 3rd argument
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self.proxyPort = sys.argv[2]
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self._core = core.Core(torPort=self.proxyPort)
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# intalize NIST beacon salt and time
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self.nistSaltTimestamp = 0
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self.powSalt = 0
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self.blockToUpload = ''
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# loop time.sleep delay in seconds
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self.delay = 1
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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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# 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.peerProfiles = [] # list of peer's profiles (onionrpeers.PeerProfile instances)
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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 recieved
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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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# 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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self.daemonTools = onionrdaemontools.DaemonTools(self)
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if debug or developmentMode:
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OnionrCommunicatorTimers(self, self.heartbeat, 10)
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# Print nice header thing :)
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if config.get('general.display_header', True) and not self.shutdown:
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self.header()
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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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# TODO: make some of these timer counts configurable
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OnionrCommunicatorTimers(self, self.daemonCommands, 5)
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OnionrCommunicatorTimers(self, self.detectAPICrash, 5)
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peerPoolTimer = OnionrCommunicatorTimers(self, self.getOnlinePeers, 60)
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OnionrCommunicatorTimers(self, self.lookupBlocks, 7, requiresPeer=True, maxThreads=1)
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OnionrCommunicatorTimers(self, self.getBlocks, 10, requiresPeer=True)
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OnionrCommunicatorTimers(self, self.clearOfflinePeer, 58)
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OnionrCommunicatorTimers(self, self.lookupKeys, 60, requiresPeer=True)
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OnionrCommunicatorTimers(self, self.lookupAdders, 60, requiresPeer=True)
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announceTimer = OnionrCommunicatorTimers(self, self.daemonTools.announceNode, 305, requiresPeer=True, maxThreads=1)
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cleanupTimer = OnionrCommunicatorTimers(self, self.peerCleanup, 300, requiresPeer=True)
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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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announceTimer.count = (cleanupTimer.frequency - 60)
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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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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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self._core._utils.localCommand('shutdown')
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time.sleep(0.5)
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def lookupKeys(self):
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'''Lookup new keys'''
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logger.debug('Looking up new keys...')
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tryAmount = 1
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for i in range(tryAmount):
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# Download new key list from random online peers
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peer = self.pickOnlinePeer()
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newKeys = self.peerAction(peer, action='kex')
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self._core._utils.mergeKeys(newKeys)
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self.decrementThreadCount('lookupKeys')
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return
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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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for i in range(tryAmount):
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# Download new peer address list from random online peers
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peer = self.pickOnlinePeer()
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newAdders = self.peerAction(peer, action='pex')
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self._core._utils.mergeAdders(newAdders)
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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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for i in range(tryAmount):
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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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newDBHash = self.peerAction(peer, 'getDBHash') # get their db hash
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if newDBHash == False:
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continue # if request failed, restart loop (peer is added to offline peers automatically)
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triedPeers.append(peer)
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if newDBHash != self._core.getAddressInfo(peer, 'DBHash'):
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self._core.setAddressInfo(peer, 'DBHash', newDBHash)
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try:
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newBlocks = self.peerAction(peer, 'getBlockHashes')
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except Exception as error:
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logger.warn("could not get new blocks with " + peer, error=error)
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newBlocks = False
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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 and not self._core._blacklist.inBlacklist(i):
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self.blockQueue.append(i)
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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 self.blockQueue:
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if self.shutdown:
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break
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if blockHash in self.currentDownloading:
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logger.debug('ALREADY DOWNLOADING ' + blockHash)
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continue
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self.currentDownloading.append(blockHash)
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logger.info("Attempting to download %s..." % blockHash)
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peerUsed = self.pickOnlinePeer()
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content = self.peerAction(peerUsed, 'getData', data=blockHash) # block content from random peer (includes metadata)
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if content != False:
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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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content = base64.b64decode(content) # content is base64 encoded in transport
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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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#meta = metas[1]
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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('Block passed proof, saving.')
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self._core.setData(content)
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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 ' + blockHash)
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else:
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logger.warn('Metadata for ' + blockHash + ' is invalid.')
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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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logger.warn('Block hash validation failed for ' + blockHash + ' got ' + tempHash)
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self.blockQueue.remove(blockHash) # remove from block queue both if success or false
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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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'''Manages the self.onlinePeers attribute list, connects to more peers if we have none connected'''
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logger.info('Refreshing peer pool.')
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maxPeers = 6
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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.warn('Could not connect to any peer.')
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self.decrementThreadCount('getOnlinePeers')
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def addBootstrapListToPeerList(self, peerList):
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'''Add the bootstrap list to the peer list (no duplicates)'''
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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:
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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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peerList = onionrpeers.getScoreSortedPeerList(self._core)
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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 len(address) == 0 or address in tried or address in self.onlinePeers:
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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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logger.info('Connected to ' + address)
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time.sleep(0.1)
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if address not in self.onlinePeers:
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self.onlinePeers.append(address)
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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)
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return retData
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def peerCleanup(self):
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'''This just calls onionrpeers.cleanupPeers, which removes dead or bad peers (offline too long, too slow)'''
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onionrpeers.peerCleanup(self._core)
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self.decrementThreadCount('peerCleanup')
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def printOnlinePeers(self):
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'''logs online peer list'''
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if len(self.onlinePeers) == 0:
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logger.warn('No online peers')
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else:
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logger.info('Online peers:')
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for i in self.onlinePeers:
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score = str(self.getPeerProfileInstance(i).score)
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logger.info(i + ', score: ' + score)
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def peerAction(self, peer, action, data=''):
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'''Perform a get request to a peer'''
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if len(peer) == 0:
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return False
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logger.info('Performing ' + action + ' with ' + peer + ' on port ' + str(self.proxyPort))
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url = 'http://' + peer + '/public/?action=' + action
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if len(data) > 0:
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url += '&data=' + data
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self._core.setAddressInfo(peer, 'lastConnectAttempt', self._core._utils.getEpoch()) # mark the time we're trying to request this peer
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retData = self._core._utils.doGetRequest(url, port=self.proxyPort)
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# if request failed, (error), mark peer offline
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if retData == False:
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try:
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self.getPeerProfileInstance(peer).addScore(-10)
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self.onlinePeers.remove(peer)
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self.getOnlinePeers() # Will only add a new peer to pool if needed
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except ValueError:
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pass
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else:
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self._core.setAddressInfo(peer, 'lastConnect', self._core._utils.getEpoch())
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self.getPeerProfileInstance(peer).addScore(1)
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return retData
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def getPeerProfileInstance(self, peer):
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'''Gets a peer profile instance from the list of profiles, by address name'''
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for i in self.peerProfiles:
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# if the peer's profile is already loaded, return that
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if i.address == peer:
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retData = i
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break
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else:
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# if the peer's profile is not loaded, return a new one. connectNewPeer adds it the list on connect
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retData = onionrpeers.PeerProfiles(peer, self._core)
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return retData
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def heartbeat(self):
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'''Show a heartbeat debug message'''
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currentTime = self._core._utils.getEpoch() - self.startTime
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logger.debug('heartbeat, running seconds: ' + str(currentTime))
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self.decrementThreadCount('heartbeat')
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def daemonCommands(self):
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'''process daemon commands from daemonQueue'''
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cmd = self._core.daemonQueue()
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if cmd is not False:
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events.event('daemon_command', onionr = None, data = {'cmd' : cmd})
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if cmd[0] == 'shutdown':
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self.shutdown = True
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elif cmd[0] == 'announceNode':
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self.announce(cmd[1])
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elif cmd[0] == 'runCheck':
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logger.debug('Status check; looks good.')
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open('data/.runcheck', 'w+').close()
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elif cmd[0] == 'connectedPeers':
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self.printOnlinePeers()
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elif cmd[0] == 'kex':
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for i in self.timers:
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if i.timerFunction.__name__ == 'lookupKeys':
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i.count = (i.frequency - 1)
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elif cmd[0] == 'pex':
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for i in self.timers:
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if i.timerFunction.__name__ == 'lookupAdders':
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i.count = (i.frequency - 1)
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elif cmd[0] == 'uploadBlock':
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self.blockToUpload = cmd[1]
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threading.Thread(target=self.uploadBlock).start()
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else:
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logger.info('Recieved daemonQueue command:' + cmd[0])
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self.decrementThreadCount('daemonCommands')
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def uploadBlock(self):
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'''Upload our block to a few peers'''
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# when inserting a block, we try to upload it to a few peers to add some deniability
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triedPeers = []
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if not self._core._utils.validateHash(self.blockToUpload):
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logger.warn('Requested to upload invalid block')
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return
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for i in range(max(len(self.onlinePeers), 2)):
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peer = self.pickOnlinePeer()
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if peer in triedPeers:
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continue
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triedPeers.append(peer)
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url = 'http://' + peer + '/public/upload/'
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data = {'block': block.Block(self.blockToUpload).getRaw()}
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proxyType = ''
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if peer.endswith('.onion'):
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proxyType = 'tor'
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elif peer.endswith('.i2p'):
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proxyType = 'i2p'
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logger.info("Uploading block")
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self._core._utils.doPostRequest(url, data=data, proxyType=proxyType)
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def announce(self, peer):
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'''Announce to peers our address'''
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if self.daemonTools.announceNode():
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logger.info('Successfully introduced node to ' + peer)
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else:
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logger.warn('Could not introduce node.')
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def detectAPICrash(self):
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'''exit if the api server crashes/stops'''
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if self._core._utils.localCommand('ping', silent=False) != 'pong':
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for i in range(5):
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if self._core._utils.localCommand('ping') == 'pong':
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break # break for loop
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time.sleep(1)
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else:
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# This executes if the api is NOT detected to be running
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events.event('daemon_crash', onionr = None, data = {})
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logger.error('Daemon detected API crash (or otherwise unable to reach API after long time), stopping...')
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self.shutdown = True
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self.decrementThreadCount('detectAPICrash')
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def header(self, message = logger.colors.fg.pink + logger.colors.bold + 'Onionr' + logger.colors.reset + logger.colors.fg.pink + ' has started.'):
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if os.path.exists('static-data/header.txt'):
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with open('static-data/header.txt', 'rb') as file:
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# only to stdout, not file or log or anything
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sys.stderr.write(file.read().decode().replace('P', logger.colors.fg.pink).replace('W', logger.colors.reset + logger.colors.bold).replace('G', logger.colors.fg.green).replace('\n', logger.colors.reset + '\n').replace('B', logger.colors.bold).replace('V', onionr.ONIONR_VERSION))
|
|
logger.info(logger.colors.fg.lightgreen + '-> ' + str(message) + logger.colors.reset + logger.colors.fg.lightgreen + ' <-\n')
|
|
|
|
class OnionrCommunicatorTimers:
|
|
def __init__(self, daemonInstance, timerFunction, frequency, makeThread=True, threadAmount=1, maxThreads=5, requiresPeer=False):
|
|
self.timerFunction = timerFunction
|
|
self.frequency = frequency
|
|
self.threadAmount = threadAmount
|
|
self.makeThread = makeThread
|
|
self.requiresPeer = requiresPeer
|
|
self.daemonInstance = daemonInstance
|
|
self.maxThreads = maxThreads
|
|
self._core = self.daemonInstance._core
|
|
|
|
self.daemonInstance.timers.append(self)
|
|
self.count = 0
|
|
|
|
def processTimer(self):
|
|
|
|
# mark how many instances of a thread we have (decremented at thread end)
|
|
try:
|
|
self.daemonInstance.threadCounts[self.timerFunction.__name__]
|
|
except KeyError:
|
|
self.daemonInstance.threadCounts[self.timerFunction.__name__] = 0
|
|
|
|
# execute thread if it is time, and we are not missing *required* online peer
|
|
if self.count == self.frequency:
|
|
try:
|
|
if self.requiresPeer and len(self.daemonInstance.onlinePeers) == 0:
|
|
raise onionrexceptions.OnlinePeerNeeded
|
|
except onionrexceptions.OnlinePeerNeeded:
|
|
pass
|
|
else:
|
|
if self.makeThread:
|
|
for i in range(self.threadAmount):
|
|
if self.daemonInstance.threadCounts[self.timerFunction.__name__] >= self.maxThreads:
|
|
logger.warn(self.timerFunction.__name__ + ' has too many current threads to start anymore.')
|
|
else:
|
|
self.daemonInstance.threadCounts[self.timerFunction.__name__] += 1
|
|
newThread = threading.Thread(target=self.timerFunction)
|
|
newThread.start()
|
|
else:
|
|
self.timerFunction()
|
|
self.count = -1 # negative 1 because its incremented at bottom
|
|
self.count += 1
|
|
|
|
shouldRun = False
|
|
debug = True
|
|
developmentMode = False
|
|
if config.get('general.dev_mode', True):
|
|
developmentMode = True
|
|
try:
|
|
if sys.argv[1] == 'run':
|
|
shouldRun = True
|
|
except IndexError:
|
|
pass
|
|
if shouldRun:
|
|
try:
|
|
OnionrCommunicatorDaemon(debug, developmentMode)
|
|
except Exception as e:
|
|
logger.error('Error occured in Communicator', error = e, timestamp = False)
|