218 lines
8.9 KiB
Python
Executable File
218 lines
8.9 KiB
Python
Executable File
'''
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Onionr - P2P Anonymous Storage Network
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Contains the CommunicatorUtils class which contains useful functions for the communicator daemon
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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 onionrexceptions, onionrpeers, onionrproofs, logger
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import base64, sqlite3, os
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from dependencies import secrets
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from utils import netutils
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from onionrusers import onionrusers
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from etc import onionrvalues
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ov = onionrvalues.OnionrValues()
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class DaemonTools:
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'''
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Class intended for use by Onionr Communicator
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'''
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def __init__(self, daemon):
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self.daemon = daemon
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self.announceProgress = {}
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self.announceCache = {}
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def announceNode(self):
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'''Announce our node to our peers'''
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retData = False
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announceFail = False
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# Do not let announceCache get too large
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if len(self.announceCache) >= 10000:
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self.announceCache.popitem()
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if self.daemon._core.config.get('general.security_level', 0) == 0:
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# Announce to random online peers
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for i in self.daemon.onlinePeers:
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if not i in self.announceCache and not i in self.announceProgress:
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peer = i
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break
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else:
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peer = self.daemon.pickOnlinePeer()
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for x in range(1):
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if x == 1 and self.daemon._core.config.get('i2p.host'):
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ourID = self.daemon._core.config.get('i2p.own_addr').strip()
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else:
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ourID = self.daemon._core.hsAddress.strip()
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url = 'http://' + peer + '/announce'
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data = {'node': ourID}
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combinedNodes = ourID + peer
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if ourID != 1:
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#TODO: Extend existingRand for i2p
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existingRand = self.daemon._core.getAddressInfo(peer, 'powValue')
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# Reset existingRand if it no longer meets the minimum POW
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if type(existingRand) is type(None) or not existingRand.endswith(b'0' * ov.announce_pow):
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existingRand = ''
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if peer in self.announceCache:
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data['random'] = self.announceCache[peer]
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elif len(existingRand) > 0:
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data['random'] = existingRand
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else:
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self.announceProgress[peer] = True
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proof = onionrproofs.DataPOW(combinedNodes, forceDifficulty=ov.announce_pow)
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del self.announceProgress[peer]
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try:
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data['random'] = base64.b64encode(proof.waitForResult()[1])
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except TypeError:
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# Happens when we failed to produce a proof
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logger.error("Failed to produce a pow for announcing to " + peer)
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announceFail = True
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else:
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self.announceCache[peer] = data['random']
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if not announceFail:
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logger.info('Announcing node to ' + url)
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if self.daemon._core._utils.doPostRequest(url, data) == 'Success':
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logger.info('Successfully introduced node to ' + peer)
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retData = True
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self.daemon._core.setAddressInfo(peer, 'introduced', 1)
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self.daemon._core.setAddressInfo(peer, 'powValue', data['random'])
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self.daemon.decrementThreadCount('announceNode')
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return retData
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def netCheck(self):
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'''Check if we are connected to the internet or not when we can't connect to any peers'''
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if len(self.daemon.onlinePeers) == 0:
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if not netutils.checkNetwork(self.daemon._core._utils, torPort=self.daemon.proxyPort):
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if not self.daemon.shutdown:
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logger.warn('Network check failed, are you connected to the Internet, and is Tor working?')
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self.daemon.isOnline = False
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else:
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self.daemon.isOnline = True
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self.daemon.decrementThreadCount('netCheck')
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def cleanOldBlocks(self):
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'''Delete old blocks if our disk allocation is full/near full, and also expired blocks'''
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# Delete expired blocks
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for bHash in self.daemon._core.getExpiredBlocks():
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self.daemon._core._blacklist.addToDB(bHash)
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self.daemon._core.removeBlock(bHash)
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logger.info('Deleted block: %s' % (bHash,))
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while self.daemon._core._utils.storageCounter.isFull():
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oldest = self.daemon._core.getBlockList()[0]
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self.daemon._core._blacklist.addToDB(oldest)
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self.daemon._core.removeBlock(oldest)
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logger.info('Deleted block: %s' % (oldest,))
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self.daemon.decrementThreadCount('cleanOldBlocks')
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def cleanKeys(self):
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'''Delete expired forward secrecy keys'''
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conn = sqlite3.connect(self.daemon._core.peerDB, timeout=10)
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c = conn.cursor()
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time = self.daemon._core._utils.getEpoch()
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deleteKeys = []
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for entry in c.execute("SELECT * FROM forwardKeys WHERE expire <= ?", (time,)):
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logger.debug('Forward key: %s' % entry[1])
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deleteKeys.append(entry[1])
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for key in deleteKeys:
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logger.debug('Deleting forward key %s' % key)
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c.execute("DELETE from forwardKeys where forwardKey = ?", (key,))
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conn.commit()
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conn.close()
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onionrusers.deleteExpiredKeys(self.daemon._core)
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self.daemon.decrementThreadCount('cleanKeys')
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def cooldownPeer(self):
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'''Randomly add an online peer to cooldown, so we can connect a new one'''
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onlinePeerAmount = len(self.daemon.onlinePeers)
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minTime = 300
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cooldownTime = 600
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toCool = ''
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tempConnectTimes = dict(self.daemon.connectTimes)
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# Remove peers from cooldown that have been there long enough
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tempCooldown = dict(self.daemon.cooldownPeer)
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for peer in tempCooldown:
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if (self.daemon._core._utils.getEpoch() - tempCooldown[peer]) >= cooldownTime:
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del self.daemon.cooldownPeer[peer]
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# Cool down a peer, if we have max connections alive for long enough
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if onlinePeerAmount >= self.daemon._core.config.get('peers.max_connect', 10, save = True):
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finding = True
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while finding:
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try:
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toCool = min(tempConnectTimes, key=tempConnectTimes.get)
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if (self.daemon._core._utils.getEpoch() - tempConnectTimes[toCool]) < minTime:
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del tempConnectTimes[toCool]
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else:
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finding = False
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except ValueError:
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break
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else:
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self.daemon.removeOnlinePeer(toCool)
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self.daemon.cooldownPeer[toCool] = self.daemon._core._utils.getEpoch()
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self.daemon.decrementThreadCount('cooldownPeer')
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def runCheck(self):
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if os.path.isfile(self.daemon._core.dataDir + '.runcheck'):
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os.remove(self.daemon._core.dataDir + '.runcheck')
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return True
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return False
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def humanReadableTime(self, seconds):
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build = ''
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units = {
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'year' : 31557600,
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'month' : (31557600 / 12),
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'day' : 86400,
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'hour' : 3600,
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'minute' : 60,
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'second' : 1
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}
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for unit in units:
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amnt_unit = int(seconds / units[unit])
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if amnt_unit >= 1:
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seconds -= amnt_unit * units[unit]
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build += '%s %s' % (amnt_unit, unit) + ('s' if amnt_unit != 1 else '') + ' '
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return build.strip()
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def insertDeniableBlock(self):
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'''Insert a fake block in order to make it more difficult to track real blocks'''
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fakePeer = ''
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chance = 10
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if secrets.randbelow(chance) == (chance - 1):
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# This assumes on the libsodium primitives to have key-privacy
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fakePeer = 'OVPCZLOXD6DC5JHX4EQ3PSOGAZ3T24F75HQLIUZSDSMYPEOXCPFA===='
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data = secrets.token_hex(secrets.randbelow(1024) + 1)
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self.daemon._core.insertBlock(data, header='pm', encryptType='asym', asymPeer=fakePeer, meta={'subject': 'foo'})
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self.daemon.decrementThreadCount('insertDeniableBlock')
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return |