769 lines
26 KiB
Python
769 lines
26 KiB
Python
'''
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Onionr - P2P Microblogging Platform & Social network
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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 sqlite3, os, sys, time, math, base64, tarfile, getpass, simplecrypt, hashlib, nacl, logger, json, netcontroller, math, config
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from onionrblockapi import Block
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import onionrutils, onionrcrypto, onionrproofs, onionrevents as events, onionrexceptions, onionrvalues
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if sys.version_info < (3, 6):
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try:
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import sha3
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except ModuleNotFoundError:
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logger.fatal('On Python 3 versions prior to 3.6.x, you need the sha3 module')
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sys.exit(1)
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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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try:
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self.queueDB = 'data/queue.db'
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self.peerDB = 'data/peers.db'
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self.blockDB = 'data/blocks.db'
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self.blockDataLocation = 'data/blocks/'
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self.addressDB = 'data/address.db'
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self.hsAdder = ''
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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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if not os.path.exists('data/'):
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os.mkdir('data/')
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if not os.path.exists('data/blocks/'):
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os.mkdir('data/blocks/')
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if not os.path.exists(self.blockDB):
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self.createBlockDB()
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if os.path.exists('data/hs/hostname'):
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with open('data/hs/hostname', 'r') as hs:
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self.hsAdder = hs.read()
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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._utils = onionrutils.OnionrUtils(self)
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# Initialize the crypto object
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self._crypto = onionrcrypto.OnionrCrypto(self)
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except Exception as error:
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logger.error('Failed to initialize core Onionr library.', error=error)
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logger.fatal('Cannot recover from error.')
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sys.exit(1)
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return
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def addPeer(self, peerID, powID, 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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# This function simply adds a peer to the DB
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if not self._utils.validatePubKey(peerID):
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return False
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if sys.getsizeof(powID) > 120:
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logger.warn("POW token for pubkey base64 representation exceeded 120 bytes, is " + str(sys.getsizeof(powID)))
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return False
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conn = sqlite3.connect(self.peerDB)
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hashID = self._crypto.pubKeyHashID(peerID)
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c = conn.cursor()
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t = (peerID, name, 'unknown', hashID, powID)
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for i in c.execute("SELECT * FROM PEERS where id = '" + peerID + "';"):
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try:
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if i[0] == peerID:
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conn.close()
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return False
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except ValueError:
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pass
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except IndexError:
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pass
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c.execute('INSERT INTO peers (id, name, dateSeen, pow, hashID) VALUES(?, ?, ?, ?, ?);', t)
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conn.commit()
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conn.close()
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return True
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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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if address == config.get('i2p.ownAddr', None):
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return False
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if self._utils.validateID(address):
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conn = sqlite3.connect(self.addressDB)
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c = conn.cursor()
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# check if address is in database
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# this is safe to do because the address is validated above, but we strip some chars here too just in case
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address = address.replace('\'', '').replace(';', '').replace('"', '').replace('\\', '')
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for i in c.execute("SELECT * FROM adders where address = '" + address + "';"):
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try:
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if i[0] == address:
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logger.warn('Not adding existing address')
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conn.close()
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return False
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except ValueError:
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pass
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except IndexError:
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pass
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t = (address, 1)
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c.execute('INSERT INTO adders (address, type) VALUES(?, ?);', t)
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conn.commit()
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conn.close()
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events.event('address_add', data = {'address': address}, onionr = None)
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return True
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else:
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logger.debug('Invalid ID')
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return False
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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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if self._utils.validateID(address):
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conn = sqlite3.connect(self.addressDB)
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c = conn.cursor()
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t = (address,)
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c.execute('Delete from adders where address=?;', t)
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conn.commit()
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conn.close()
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events.event('address_remove', data = {'address': address}, onionr = None)
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return True
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else:
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return False
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def removeBlock(self, block):
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'''
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remove a block from this node
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'''
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if self._utils.validateHash(block):
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conn = sqlite3.connect(self.blockDB)
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c = conn.cursor()
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t = (block,)
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c.execute('Delete from hashes where hash=?;', t)
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conn.commit()
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conn.close()
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try:
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os.remove('data/blocks/' + block + '.dat')
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except FileNotFoundError:
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pass
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def createAddressDB(self):
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'''
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Generate the address database
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types:
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1: I2P b32 address
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2: Tor v2 (like facebookcorewwwi.onion)
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3: Tor v3
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'''
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conn = sqlite3.connect(self.addressDB)
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c = conn.cursor()
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c.execute('''CREATE TABLE adders(
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address text,
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type int,
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knownPeer text,
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speed int,
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success int,
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DBHash text,
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powValue text,
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failure int,
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lastConnect int
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);
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''')
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conn.commit()
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conn.close()
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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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# generate the peer database
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conn = sqlite3.connect(self.peerDB)
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c = conn.cursor()
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c.execute('''CREATE TABLE peers(
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ID text not null,
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name text,
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adders text,
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blockDBHash text,
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forwardKey text,
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dateSeen not null,
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bytesStored int,
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trust int,
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pubkeyExchanged int,
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hashID text,
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pow text not null);
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''')
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conn.commit()
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conn.close()
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return
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def createBlockDB(self):
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'''
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Create a database for blocks
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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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'''
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if os.path.exists(self.blockDB):
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raise Exception("Block database already exists")
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conn = sqlite3.connect(self.blockDB)
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c = conn.cursor()
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c.execute('''CREATE TABLE hashes(
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hash text not null,
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dateReceived int,
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decrypted int,
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dataType text,
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dataFound int,
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dataSaved int,
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sig text,
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author text
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);
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''')
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conn.commit()
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conn.close()
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return
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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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if not os.path.exists(self.blockDB):
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raise Exception('Block db does not exist')
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if self._utils.hasBlock(newHash):
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return
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conn = sqlite3.connect(self.blockDB)
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c = conn.cursor()
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currentTime = self._utils.getEpoch()
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if selfInsert or dataSaved:
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selfInsert = 1
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else:
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selfInsert = 0
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data = (newHash, currentTime, '', selfInsert)
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c.execute('INSERT INTO hashes (hash, dateReceived, dataType, dataSaved) VALUES(?, ?, ?, ?);', data)
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conn.commit()
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conn.close()
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return
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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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try:
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# logger.debug('Opening %s' % (str(self.blockDataLocation) + str(hash) + '.dat'))
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dataFile = open(self.blockDataLocation + hash + '.dat', 'rb')
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data = dataFile.read()
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dataFile.close()
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except FileNotFoundError:
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data = False
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return data
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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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data = data
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hasher = hashlib.sha3_256()
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if not type(data) is bytes:
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data = data.encode()
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hasher.update(data)
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dataHash = hasher.hexdigest()
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if type(dataHash) is bytes:
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dataHash = dataHash.decode()
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blockFileName = self.blockDataLocation + dataHash + '.dat'
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if os.path.exists(blockFileName):
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pass # TODO: properly check if block is already saved elsewhere
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#raise Exception("Data is already set for " + dataHash)
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else:
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blockFile = open(blockFileName, 'wb')
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blockFile.write(data)
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blockFile.close()
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conn = sqlite3.connect(self.blockDB)
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c = conn.cursor()
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c.execute("UPDATE hashes SET dataSaved=1 WHERE hash = '" + dataHash + "';")
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conn.commit()
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conn.close()
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return dataHash
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def dataDirEncrypt(self, password):
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'''
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Encrypt the data directory on Onionr shutdown
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'''
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if os.path.exists('data.tar'):
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os.remove('data.tar')
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tar = tarfile.open("data.tar", "w")
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for name in ['data']:
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tar.add(name)
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tar.close()
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tarData = open('data.tar', 'r', encoding = "ISO-8859-1").read()
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encrypted = simplecrypt.encrypt(password, tarData)
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open('data-encrypted.dat', 'wb').write(encrypted)
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os.remove('data.tar')
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return
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def dataDirDecrypt(self, password):
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'''
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Decrypt the data directory on startup
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'''
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if not os.path.exists('data-encrypted.dat'):
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return (False, 'encrypted archive does not exist')
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data = open('data-encrypted.dat', 'rb').read()
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try:
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decrypted = simplecrypt.decrypt(password, data)
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except simplecrypt.DecryptionException:
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return (False, 'wrong password (or corrupted archive)')
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else:
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open('data.tar', 'wb').write(decrypted)
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tar = tarfile.open('data.tar')
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tar.extractall()
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tar.close()
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return (True, '')
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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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retData = False
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if not os.path.exists(self.queueDB):
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conn = sqlite3.connect(self.queueDB)
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c = conn.cursor()
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# Create table
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c.execute('''CREATE TABLE commands
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(id integer primary key autoincrement, command text, data text, date text)''')
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conn.commit()
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else:
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conn = sqlite3.connect(self.queueDB)
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c = conn.cursor()
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for row in c.execute('SELECT command, data, date, min(ID) FROM commands group by id'):
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retData = row
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break
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if retData != False:
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c.execute('DELETE FROM commands WHERE id=?;', (retData[3],))
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conn.commit()
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conn.close()
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events.event('queue_pop', data = {'data': retData}, onionr = None)
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return retData
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def daemonQueueAdd(self, command, data=''):
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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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# Intended to be used by the web server
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date = self._utils.getEpoch()
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conn = sqlite3.connect(self.queueDB)
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c = conn.cursor()
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t = (command, data, date)
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c.execute('INSERT INTO commands (command, data, date) VALUES(?, ?, ?)', t)
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conn.commit()
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conn.close()
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events.event('queue_push', data = {'command': command, 'data': data}, onionr = None)
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return
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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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conn = sqlite3.connect(self.queueDB)
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c = conn.cursor()
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try:
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c.execute('DELETE FROM commands;')
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conn.commit()
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except:
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pass
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conn.close()
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events.event('queue_clear', onionr = None)
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return
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def listAdders(self, randomOrder=True, i2p=True):
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'''
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Return a list of addresses
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'''
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conn = sqlite3.connect(self.addressDB)
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c = conn.cursor()
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if randomOrder:
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addresses = c.execute('SELECT * FROM adders ORDER BY RANDOM();')
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else:
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addresses = c.execute('SELECT * FROM adders;')
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addressList = []
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for i in addresses:
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addressList.append(i[0])
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conn.close()
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return addressList
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|
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def listPeers(self, randomOrder=True, getPow=False):
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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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'''
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conn = sqlite3.connect(self.peerDB)
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c = conn.cursor()
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payload = ""
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if randomOrder:
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payload = 'SELECT * FROM peers ORDER BY RANDOM();'
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else:
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payload = 'SELECT * FROM peers;'
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peerList = []
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for i in c.execute(payload):
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try:
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if len(i[0]) != 0:
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if getPow:
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peerList.append(i[0] + '-' + i[1])
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else:
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peerList.append(i[0])
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except TypeError:
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pass
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if getPow:
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try:
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peerList.append(self._crypto.pubKey + '-' + self._crypto.pubKeyPowToken)
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except TypeError:
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pass
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else:
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peerList.append(self._crypto.pubKey)
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conn.close()
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return peerList
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|
|
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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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|
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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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forwardKey text, 3
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dateSeen not null, 4
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bytesStored int, 5
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trust int 6
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pubkeyExchanged int 7
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hashID text 8
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pow text 9
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'''
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conn = sqlite3.connect(self.peerDB)
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c = conn.cursor()
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command = (peer,)
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infoNumbers = {'id': 0, 'name': 1, 'adders': 2, 'forwardKey': 3, 'dateSeen': 4, 'bytesStored': 5, 'trust': 6, 'pubkeyExchanged': 7, 'hashID': 8}
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info = infoNumbers[info]
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iterCount = 0
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retVal = ''
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for row in c.execute('SELECT * from peers where id=?;', command):
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for i in row:
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if iterCount == info:
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retVal = i
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break
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else:
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iterCount += 1
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conn.close()
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|
|
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return retVal
|
|
|
|
def setPeerInfo(self, peer, key, data):
|
|
'''
|
|
Update a peer for a key
|
|
'''
|
|
conn = sqlite3.connect(self.peerDB)
|
|
c = conn.cursor()
|
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command = (data, peer)
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# TODO: validate key on whitelist
|
|
if key not in ('id', 'name', 'pubkey', 'blockDBHash', 'forwardKey', 'dateSeen', 'bytesStored', 'trust'):
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raise Exception("Got invalid database key when setting peer info")
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c.execute('UPDATE peers SET ' + key + ' = ? WHERE id=?', command)
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conn.commit()
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|
conn.close()
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|
return
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|
|
|
def getAddressInfo(self, address, info):
|
|
'''
|
|
Get info about an address from its database entry
|
|
|
|
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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DBHash text, 5
|
|
failure int 6
|
|
lastConnect 7
|
|
'''
|
|
conn = sqlite3.connect(self.addressDB)
|
|
c = conn.cursor()
|
|
command = (address,)
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infoNumbers = {'address': 0, 'type': 1, 'knownPeer': 2, 'speed': 3, 'success': 4, 'DBHash': 5, 'failure': 6, 'lastConnect': 7}
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info = infoNumbers[info]
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|
iterCount = 0
|
|
retVal = ''
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for row in c.execute('SELECT * from adders where address=?;', command):
|
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for i in row:
|
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if iterCount == info:
|
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retVal = i
|
|
break
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|
else:
|
|
iterCount += 1
|
|
conn.close()
|
|
return retVal
|
|
|
|
def setAddressInfo(self, address, key, data):
|
|
'''
|
|
Update an address for a key
|
|
'''
|
|
conn = sqlite3.connect(self.addressDB)
|
|
c = conn.cursor()
|
|
command = (data, address)
|
|
# TODO: validate key on whitelist
|
|
if key not in ('address', 'type', 'knownPeer', 'speed', 'success', 'DBHash', 'failure', 'lastConnect'):
|
|
raise Exception("Got invalid database key when setting address info")
|
|
c.execute('UPDATE adders SET ' + key + ' = ? WHERE address=?', command)
|
|
conn.commit()
|
|
conn.close()
|
|
return
|
|
|
|
def handle_direct_connection(self, data):
|
|
'''
|
|
Handles direct messages
|
|
'''
|
|
try:
|
|
data = json.loads(data)
|
|
|
|
# TODO: Determine the sender, verify, etc
|
|
if ('callback' in data) and (data['callback'] is True):
|
|
# then this is a response to the message we sent earlier
|
|
self.daemonQueueAdd('checkCallbacks', json.dumps(data))
|
|
else:
|
|
# then we should handle it and respond accordingly
|
|
self.daemonQueueAdd('incomingDirectConnection', json.dumps(data))
|
|
except Exception as e:
|
|
logger.warn('Failed to handle incoming direct message: %s' % str(e))
|
|
|
|
return
|
|
|
|
def getBlockList(self, unsaved = False): # TODO: Use unsaved
|
|
'''
|
|
Get list of our blocks
|
|
'''
|
|
conn = sqlite3.connect(self.blockDB)
|
|
c = conn.cursor()
|
|
if unsaved:
|
|
execute = 'SELECT hash FROM hashes WHERE dataSaved != 1 ORDER BY RANDOM();'
|
|
else:
|
|
execute = 'SELECT hash FROM hashes ORDER BY RANDOM();'
|
|
rows = list()
|
|
for row in c.execute(execute):
|
|
for i in row:
|
|
rows.append(i)
|
|
|
|
return rows
|
|
|
|
def getBlockDate(self, blockHash):
|
|
'''
|
|
Returns the date a block was received
|
|
'''
|
|
conn = sqlite3.connect(self.blockDB)
|
|
c = conn.cursor()
|
|
execute = 'SELECT dateReceived FROM hashes WHERE hash=?;'
|
|
args = (blockHash,)
|
|
for row in c.execute(execute, args):
|
|
for i in row:
|
|
return int(i)
|
|
|
|
return None
|
|
|
|
def getBlocksByType(self, blockType):
|
|
'''
|
|
Returns a list of blocks by the type
|
|
'''
|
|
conn = sqlite3.connect(self.blockDB)
|
|
c = conn.cursor()
|
|
execute = 'SELECT hash FROM hashes WHERE dataType=?;'
|
|
args = (blockType,)
|
|
rows = list()
|
|
for row in c.execute(execute, args):
|
|
for i in row:
|
|
rows.append(i)
|
|
|
|
return rows
|
|
|
|
def setBlockType(self, hash, blockType):
|
|
'''
|
|
Sets the type of block
|
|
'''
|
|
|
|
conn = sqlite3.connect(self.blockDB)
|
|
c = conn.cursor()
|
|
c.execute("UPDATE hashes SET dataType='" + blockType + "' WHERE hash = '" + hash + "';")
|
|
conn.commit()
|
|
conn.close()
|
|
return
|
|
|
|
def updateBlockInfo(self, hash, key, data):
|
|
'''
|
|
sets info associated with a block
|
|
'''
|
|
|
|
if key not in ('dateReceived', 'decrypted', 'dataType', 'dataFound', 'dataSaved', 'sig', 'author'):
|
|
return False
|
|
|
|
conn = sqlite3.connect(self.blockDB)
|
|
c = conn.cursor()
|
|
args = (data, hash)
|
|
c.execute("UPDATE hashes SET " + key + " = ? where hash = ?;", args)
|
|
conn.commit()
|
|
conn.close()
|
|
return True
|
|
|
|
def insertBlock(self, data, header='txt', sign=False, encryptType='', symKey='', asymPeer='', meta = {}):
|
|
'''
|
|
Inserts a block into the network
|
|
encryptType must be specified to encrypt a block
|
|
'''
|
|
|
|
try:
|
|
data.decode()
|
|
except AttributeError:
|
|
data = data.encode()
|
|
|
|
retData = ''
|
|
signature = ''
|
|
signer = ''
|
|
metadata = {}
|
|
|
|
# only use header if not set in provided meta
|
|
try:
|
|
meta['type']
|
|
except KeyError:
|
|
meta['type'] = header # block type
|
|
|
|
jsonMeta = json.dumps(meta)
|
|
|
|
if encryptType in ('asym', 'sym', ''):
|
|
metadata['encryptType'] = encryptType
|
|
else:
|
|
raise onionrexceptions.InvalidMetadata('encryptType must be asym or sym, or blank')
|
|
|
|
# sign before encrypt, as unauthenticated crypto should not be a problem here
|
|
if sign:
|
|
signature = self._crypto.edSign(jsonMeta + data, key=self._crypto.privKey, encodeResult=True)
|
|
signer = self._crypto.pubKeyHashID()
|
|
|
|
if len(jsonMeta) > 1000:
|
|
raise onionrexceptions.InvalidMetadata('meta in json encoded form must not exceed 1000 bytes')
|
|
|
|
# encrypt block metadata/sig/content
|
|
if encryptType == 'sym':
|
|
if len(symKey) < self.requirements.passwordLength:
|
|
raise onionrexceptions.SecurityError('Weak encryption key')
|
|
jsonMeta = self._crypto.symmetricEncrypt(jsonMeta, key=symKey, returnEncoded=True)
|
|
data = self._crypto.symmetricEncrypt(data, key=symKey, returnEncoded=True)
|
|
signature = self._crypto.symmetricEncrypt(signature, key=symKey, returnEncoded=True)
|
|
signer = self._crypto.symmetricEncrypt(signer, key=symKey, returnEncoded=True)
|
|
elif encryptType == 'asym':
|
|
if self._utils.validatePubKey(asymPeer):
|
|
jsonMeta = self._crypto.pubKeyEncrypt(jsonMeta, asymPeer, encodedData=True)
|
|
data = self._crypto.pubKeyEncrypt(data, asymPeer, encodedData=True)
|
|
signature = self._crypto.pubKeyEncrypt(signature, asymPeer, encodedData=True)
|
|
else:
|
|
raise onionrexceptions.InvalidPubkey(asymPeer + ' is not a valid base32 encoded ed25519 key')
|
|
|
|
powProof = onionrproofs.POW(data)
|
|
|
|
# wait for proof to complete
|
|
powToken = powProof.waitForResult()
|
|
|
|
powToken = base64.b64encode(powToken[1])
|
|
try:
|
|
powToken = powToken.decode()
|
|
except AttributeError:
|
|
pass
|
|
|
|
# compile metadata
|
|
metadata['meta'] = jsonMeta
|
|
metadata['sig'] = signature
|
|
metadata['signer'] = signer
|
|
metadata['powRandomToken'] = powToken
|
|
metadata['time'] = str(self._utils.getEpoch())
|
|
|
|
payload = json.dumps(metadata).encode() + b'\n' + data
|
|
retData = self.setData(payload)
|
|
self.addToBlockDB(retData, selfInsert=True, dataSaved=True)
|
|
|
|
return retData
|
|
|
|
def introduceNode(self):
|
|
'''
|
|
Introduces our node into the network by telling X many nodes our HS address
|
|
'''
|
|
|
|
if(self._utils.isCommunicatorRunning()):
|
|
announceAmount = 2
|
|
nodeList = self.listAdders()
|
|
|
|
if len(nodeList) == 0:
|
|
for i in self.bootstrapList:
|
|
if self._utils.validateID(i):
|
|
self.addAddress(i)
|
|
nodeList.append(i)
|
|
|
|
if announceAmount > len(nodeList):
|
|
announceAmount = len(nodeList)
|
|
|
|
for i in range(announceAmount):
|
|
self.daemonQueueAdd('announceNode', nodeList[i])
|
|
|
|
events.event('introduction', onionr = None)
|
|
|
|
return True
|
|
else:
|
|
logger.error('Onionr daemon is not running.')
|
|
return False
|
|
|
|
return
|