462 lines
18 KiB
Python
Executable File
462 lines
18 KiB
Python
Executable File
'''
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Onionr - Private P2P Communication
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Core Onionr library, useful for external programs. Handles peer & data processing
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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 os, sys, json
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import logger, netcontroller, config
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from onionrblockapi import Block
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import coredb
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import deadsimplekv as simplekv
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import onionrcrypto, onionrproofs, onionrevents as events, onionrexceptions
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import onionrblacklist
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from onionrusers import onionrusers
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from onionrstorage import removeblock, setdata
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import dbcreator, onionrstorage, serializeddata, subprocesspow
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from etc import onionrvalues, powchoice
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from onionrutils import localcommand, stringvalidators, bytesconverter, epoch
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from onionrutils import blockmetadata
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from utils import identifyhome
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import storagecounter
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class Core:
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def __init__(self, torPort=0):
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'''
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Initialize Core Onionr library
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'''
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# set data dir
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self.dataDir = identifyhome.identify_home()
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try:
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self.usageFile = self.dataDir + 'disk-usage.txt'
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self.config = config
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self.maxBlockSize = 10000000 # max block size in bytes
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self.onionrInst = None
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self.queueDB = self.dataDir + 'queue.db'
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self.peerDB = self.dataDir + 'peers.db'
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self.blockDB = self.dataDir + 'blocks.db'
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self.blockDataLocation = self.dataDir + 'blocks/'
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self.blockDataDB = self.blockDataLocation + 'block-data.db'
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self.publicApiHostFile = self.dataDir + 'public-host.txt'
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self.privateApiHostFile = self.dataDir + 'private-host.txt'
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self.addressDB = self.dataDir + 'address.db'
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self.hsAddress = ''
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self.i2pAddress = config.get('i2p.own_addr', None)
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self.bootstrapFileLocation = 'static-data/bootstrap-nodes.txt'
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self.bootstrapList = []
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self.requirements = onionrvalues.OnionrValues()
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self.torPort = torPort
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self.dataNonceFile = self.dataDir + 'block-nonces.dat'
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self.dbCreate = dbcreator.DBCreator(self)
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self.forwardKeysFile = self.dataDir + 'forward-keys.db'
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self.keyStore = simplekv.DeadSimpleKV(self.dataDir + 'cachedstorage.dat', refresh_seconds=5)
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self.storage_counter = storagecounter.StorageCounter(self)
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# Socket data, defined here because of multithreading constraints with gevent
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self.killSockets = False
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self.startSocket = {}
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self.socketServerConnData = {}
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self.socketReasons = {}
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self.socketServerResponseData = {}
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if not os.path.exists(self.dataDir):
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os.mkdir(self.dataDir)
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if not os.path.exists(self.dataDir + 'blocks/'):
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os.mkdir(self.dataDir + 'blocks/')
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if not os.path.exists(self.blockDB):
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self.createBlockDB()
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if not os.path.exists(self.forwardKeysFile):
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self.dbCreate.createForwardKeyDB()
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if not os.path.exists(self.peerDB):
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self.createPeerDB()
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if not os.path.exists(self.addressDB):
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self.createAddressDB()
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if os.path.exists(self.dataDir + '/hs/hostname'):
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with open(self.dataDir + '/hs/hostname', 'r') as hs:
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self.hsAddress = hs.read().strip()
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# Load bootstrap address list
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if os.path.exists(self.bootstrapFileLocation):
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with open(self.bootstrapFileLocation, 'r') as bootstrap:
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bootstrap = bootstrap.read()
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for i in bootstrap.split('\n'):
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self.bootstrapList.append(i)
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else:
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logger.warn('Warning: address bootstrap file not found ' + self.bootstrapFileLocation)
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self.use_subprocess = powchoice.use_subprocess(self)
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# Initialize the crypto object
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self._crypto = onionrcrypto.OnionrCrypto(self)
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self._blacklist = onionrblacklist.OnionrBlackList(self)
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self.serializer = serializeddata.SerializedData(self)
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except Exception as error:
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logger.error('Failed to initialize core Onionr library.', error=error, terminal=True)
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logger.fatal('Cannot recover from error.', terminal=True)
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sys.exit(1)
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return
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def refreshFirstStartVars(self):
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'''
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Hack to refresh some vars which may not be set on first start
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'''
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if os.path.exists(self.dataDir + '/hs/hostname'):
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with open(self.dataDir + '/hs/hostname', 'r') as hs:
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self.hsAddress = hs.read().strip()
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def addPeer(self, peerID, name=''):
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'''
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Adds a public key to the key database (misleading function name)
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'''
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return coredb.keydb.addkeys.add_peer(self, peerID, name)
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def addAddress(self, address):
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'''
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Add an address to the address database (only tor currently)
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'''
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return coredb.keydb.addkeys.add_address(self, address)
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def removeAddress(self, address):
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'''
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Remove an address from the address database
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'''
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return coredb.keydb.removekeys.remove_address(self, address)
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def removeBlock(self, block):
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'''
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remove a block from this node (does not automatically blacklist)
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**You may want blacklist.addToDB(blockHash)
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'''
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removeblock.remove_block(self, block)
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def createAddressDB(self):
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'''
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Generate the address database
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'''
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self.dbCreate.createAddressDB()
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def createPeerDB(self):
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'''
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Generate the peer sqlite3 database and populate it with the peers table.
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'''
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self.dbCreate.createPeerDB()
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def createBlockDB(self):
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'''
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Create a database for blocks
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'''
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self.dbCreate.createBlockDB()
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def addToBlockDB(self, newHash, selfInsert=False, dataSaved=False):
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'''
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Add a hash value to the block db
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Should be in hex format!
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'''
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coredb.blockmetadb.add.add_to_block_DB(self, newHash, selfInsert, dataSaved)
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def setData(self, data):
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'''
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Set the data assciated with a hash
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'''
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return onionrstorage.setdata.set_data(self, data)
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def getData(self, hash):
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'''
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Simply return the data associated to a hash
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'''
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return onionrstorage.getData(self, hash)
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def daemonQueue(self):
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'''
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Gives commands to the communication proccess/daemon by reading an sqlite3 database
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This function intended to be used by the client. Queue to exchange data between "client" and server.
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'''
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return coredb.daemonqueue.daemon_queue(self)
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def daemonQueueAdd(self, command, data='', responseID=''):
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'''
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Add a command to the daemon queue, used by the communication daemon (communicator.py)
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'''
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return coredb.daemonqueue.daemon_queue_add(self, command, data, responseID)
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def daemonQueueGetResponse(self, responseID=''):
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'''
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Get a response sent by communicator to the API, by requesting to the API
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'''
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return coredb.daemonqueue.daemon_queue_get_response(self, responseID)
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def clearDaemonQueue(self):
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'''
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Clear the daemon queue (somewhat dangerous)
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'''
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return coredb.daemonqueue.clear_daemon_queue(self)
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def listAdders(self, randomOrder=True, i2p=True, recent=0):
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'''
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Return a list of addresses
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'''
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return coredb.keydb.listkeys.list_adders(self, randomOrder, i2p, recent)
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def listPeers(self, randomOrder=True, getPow=False, trust=0):
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'''
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Return a list of public keys (misleading function name)
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randomOrder determines if the list should be in a random order
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trust sets the minimum trust to list
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'''
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return coredb.keydb.listkeys.list_peers(self, randomOrder, getPow, trust)
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def getPeerInfo(self, peer, info):
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'''
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Get info about a peer from their database entry
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id text 0
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name text, 1
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adders text, 2
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dateSeen not null, 3
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trust int 4
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hashID text 5
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'''
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return coredb.keydb.userinfo.get_user_info(self, peer, info)
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def setPeerInfo(self, peer, key, data):
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'''
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Update a peer for a key
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'''
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return coredb.keydb.userinfo.set_peer_info(self, peer, key, data)
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def getAddressInfo(self, address, info):
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'''
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Get info about an address from its database entry
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address text, 0
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type int, 1
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knownPeer text, 2
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speed int, 3
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success int, 4
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powValue 5
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failure int 6
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lastConnect 7
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trust 8
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introduced 9
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'''
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return coredb.keydb.transportinfo.get_address_info(self, address, info)
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def setAddressInfo(self, address, key, data):
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'''
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Update an address for a key
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'''
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return coredb.keydb.transportinfo.set_address_info(self, address, key, data)
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def getBlockList(self, dateRec = None, unsaved = False):
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'''
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Get list of our blocks
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'''
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return coredb.blockmetadb.get_block_list(self, dateRec, unsaved)
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def getBlockDate(self, blockHash):
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'''
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Returns the date a block was received
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'''
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return coredb.blockmetadb.get_block_date(self, blockHash)
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def getBlocksByType(self, blockType, orderDate=True):
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'''
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Returns a list of blocks by the type
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'''
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return coredb.blockmetadb.get_blocks_by_type(self, blockType, orderDate)
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def getExpiredBlocks(self):
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'''Returns a list of expired blocks'''
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return coredb.blockmetadb.expiredblocks.get_expired_blocks(self)
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def updateBlockInfo(self, hash, key, data):
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'''
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sets info associated with a block
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hash - the hash of a block
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dateReceived - the date the block was recieved, not necessarily when it was created
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decrypted - if we can successfully decrypt the block (does not describe its current state)
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dataType - data type of the block
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dataFound - if the data has been found for the block
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dataSaved - if the data has been saved for the block
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sig - optional signature by the author (not optional if author is specified)
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author - multi-round partial sha3-256 hash of authors public key
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dateClaimed - timestamp claimed inside the block, only as trustworthy as the block author is
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expire - expire date for a block
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'''
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return coredb.blockmetadb.updateblockinfo.update_block_info(self, hash, key, data)
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def insertBlock(self, data, header='txt', sign=False, encryptType='', symKey='', asymPeer='', meta = {}, expire=None, disableForward=False):
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'''
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Inserts a block into the network
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encryptType must be specified to encrypt a block
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'''
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allocationReachedMessage = 'Cannot insert block, disk allocation reached.'
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if self.storage_counter.isFull():
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logger.error(allocationReachedMessage)
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return False
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retData = False
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if type(data) is None:
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raise ValueError('Data cannot be none')
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createTime = epoch.get_epoch()
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dataNonce = bytesconverter.bytes_to_str(self._crypto.sha3Hash(data))
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try:
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with open(self.dataNonceFile, 'r') as nonces:
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if dataNonce in nonces:
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return retData
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except FileNotFoundError:
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pass
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# record nonce
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with open(self.dataNonceFile, 'a') as nonceFile:
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nonceFile.write(dataNonce + '\n')
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if type(data) is bytes:
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data = data.decode()
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data = str(data)
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plaintext = data
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plaintextMeta = {}
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plaintextPeer = asymPeer
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retData = ''
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signature = ''
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signer = ''
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metadata = {}
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# metadata is full block metadata, meta is internal, user specified metadata
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# only use header if not set in provided meta
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meta['type'] = str(header)
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if encryptType in ('asym', 'sym', ''):
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metadata['encryptType'] = encryptType
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else:
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raise onionrexceptions.InvalidMetadata('encryptType must be asym or sym, or blank')
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try:
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data = data.encode()
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except AttributeError:
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pass
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if encryptType == 'asym':
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meta['rply'] = createTime # Duplicate the time in encrypted messages to prevent replays
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if not disableForward and sign and asymPeer != self._crypto.pubKey:
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try:
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forwardEncrypted = onionrusers.OnionrUser(self, asymPeer).forwardEncrypt(data)
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data = forwardEncrypted[0]
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meta['forwardEnc'] = True
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expire = forwardEncrypted[2] # Expire time of key. no sense keeping block after that
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except onionrexceptions.InvalidPubkey:
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pass
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#onionrusers.OnionrUser(self, asymPeer).generateForwardKey()
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fsKey = onionrusers.OnionrUser(self, asymPeer).generateForwardKey()
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#fsKey = onionrusers.OnionrUser(self, asymPeer).getGeneratedForwardKeys().reverse()
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meta['newFSKey'] = fsKey
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jsonMeta = json.dumps(meta)
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plaintextMeta = jsonMeta
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if sign:
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signature = self._crypto.edSign(jsonMeta.encode() + data, key=self._crypto.privKey, encodeResult=True)
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signer = self._crypto.pubKey
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if len(jsonMeta) > 1000:
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raise onionrexceptions.InvalidMetadata('meta in json encoded form must not exceed 1000 bytes')
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user = onionrusers.OnionrUser(self, symKey)
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# encrypt block metadata/sig/content
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if encryptType == 'sym':
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if len(symKey) < self.requirements.passwordLength:
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raise onionrexceptions.SecurityError('Weak encryption key')
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jsonMeta = self._crypto.symmetricEncrypt(jsonMeta, key=symKey, returnEncoded=True).decode()
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data = self._crypto.symmetricEncrypt(data, key=symKey, returnEncoded=True).decode()
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signature = self._crypto.symmetricEncrypt(signature, key=symKey, returnEncoded=True).decode()
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signer = self._crypto.symmetricEncrypt(signer, key=symKey, returnEncoded=True).decode()
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elif encryptType == 'asym':
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if stringvalidators.validate_pub_key(asymPeer):
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# Encrypt block data with forward secrecy key first, but not meta
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jsonMeta = json.dumps(meta)
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jsonMeta = self._crypto.pubKeyEncrypt(jsonMeta, asymPeer, encodedData=True).decode()
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data = self._crypto.pubKeyEncrypt(data, asymPeer, encodedData=True).decode()
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signature = self._crypto.pubKeyEncrypt(signature, asymPeer, encodedData=True).decode()
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signer = self._crypto.pubKeyEncrypt(signer, asymPeer, encodedData=True).decode()
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try:
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onionrusers.OnionrUser(self, asymPeer, saveUser=True)
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except ValueError:
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# if peer is already known
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pass
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else:
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raise onionrexceptions.InvalidPubkey(asymPeer + ' is not a valid base32 encoded ed25519 key')
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# compile metadata
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metadata['meta'] = jsonMeta
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metadata['sig'] = signature
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metadata['signer'] = signer
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metadata['time'] = createTime
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# ensure expire is integer and of sane length
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if type(expire) is not type(None):
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assert len(str(int(expire))) < 14
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metadata['expire'] = expire
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# send block data (and metadata) to POW module to get tokenized block data
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if self.use_subprocess:
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payload = subprocesspow.SubprocessPOW(data, metadata, self).start()
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else:
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payload = onionrproofs.POW(metadata, data).waitForResult()
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if payload != False:
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try:
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retData = self.setData(payload)
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except onionrexceptions.DiskAllocationReached:
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logger.error(allocationReachedMessage)
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retData = False
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else:
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# Tell the api server through localCommand to wait for the daemon to upload this block to make statistical analysis more difficult
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if localcommand.local_command(self, '/ping', maxWait=10) == 'pong!':
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if self.config.get('general.security_level', 1) == 0:
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localcommand.local_command(self, '/waitforshare/' + retData, post=True, maxWait=5)
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self.daemonQueueAdd('uploadBlock', retData)
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else:
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pass
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self.addToBlockDB(retData, selfInsert=True, dataSaved=True)
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blockmetadata.process_block_metadata(self, retData)
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if retData != False:
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if plaintextPeer == onionrvalues.DENIABLE_PEER_ADDRESS:
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events.event('insertdeniable', {'content': plaintext, 'meta': plaintextMeta, 'hash': retData, 'peer': bytesconverter.bytes_to_str(asymPeer)}, onionr = self.onionrInst, threaded = True)
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else:
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events.event('insertblock', {'content': plaintext, 'meta': plaintextMeta, 'hash': retData, 'peer': bytesconverter.bytes_to_str(asymPeer)}, onionr = self.onionrInst, threaded = True)
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return retData
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def introduceNode(self):
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'''
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Introduces our node into the network by telling X many nodes our HS address
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'''
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if localcommand.local_command(self, '/ping', maxWait=10) == 'pong!':
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self.daemonQueueAdd('announceNode')
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logger.info('Introduction command will be processed.', terminal=True)
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else:
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logger.warn('No running node detected. Cannot introduce.', terminal=True)
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