126 lines
4.0 KiB
Python
Executable File
126 lines
4.0 KiB
Python
Executable File
"""Onionr - Private P2P Communication.
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Handle maintenance of a blacklist database, for blocks and peers
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"""
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import sqlite3
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import os
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from onionrplugins.onionrevents import event
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import onionrcrypto
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from onionrutils import epoch, bytesconverter
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from coredb import dbfiles
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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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class OnionrBlackList:
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def __init__(self):
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self.blacklistDB = dbfiles.blacklist_db
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if not os.path.exists(dbfiles.blacklist_db):
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self.generateDB()
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return
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def inBlacklist(self, data):
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hashed = bytesconverter.bytes_to_str(onionrcrypto.hashers.sha3_hash(data))
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retData = False
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if not hashed.isalnum():
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raise Exception("Hashed data is not alpha numeric")
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if len(hashed) > 64:
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raise Exception("Hashed data is too large")
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for i in self._dbExecute("SELECT * FROM blacklist WHERE hash = ?", (hashed,)):
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retData = True # this only executes if an entry is present by that hash
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break
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return retData
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def _dbExecute(self, toExec, params = ()):
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conn = sqlite3.connect(self.blacklistDB)
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c = conn.cursor()
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retData = c.execute(toExec, params)
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conn.commit()
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return retData
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def deleteBeforeDate(self, date):
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# TODO, delete blacklist entries before date
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return
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def deleteExpired(self, dataType=0):
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"""Delete expired entries"""
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deleteList = []
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curTime = epoch.get_epoch()
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try:
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int(dataType)
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except AttributeError:
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raise TypeError("dataType must be int")
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for i in self._dbExecute('SELECT * FROM blacklist WHERE dataType = ?', (dataType,)):
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if i[1] == dataType:
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if (curTime - i[2]) >= i[3]:
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deleteList.append(i[0])
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for thing in deleteList:
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self._dbExecute("DELETE FROM blacklist WHERE hash = ?", (thing,))
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def generateDB(self):
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return
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def clearDB(self):
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self._dbExecute("""DELETE FROM blacklist;""")
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def getList(self):
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data = self._dbExecute('SELECT * FROM blacklist')
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myList = []
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for i in data:
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myList.append(i[0])
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return myList
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def addToDB(self, data, dataType=0, expire=0):
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"""Add to the blacklist. Intended to be block hash, block data, peers, or transport addresses
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0=block
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1=peer
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2=pubkey
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"""
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# we hash the data so we can remove data entirely from our node's disk
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hashed = bytesconverter.bytes_to_str(onionrcrypto.hashers.sha3_hash(data))
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event('blacklist_add', data={'data': data, 'hash': hashed})
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if len(hashed) > 64:
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raise Exception("Hashed data is too large")
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if not hashed.isalnum():
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raise Exception("Hashed data is not alpha numeric")
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try:
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int(dataType)
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except ValueError:
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raise Exception("dataType is not int")
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try:
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int(expire)
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except ValueError:
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raise Exception("expire is not int")
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if self.inBlacklist(hashed):
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return
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insert = (hashed,)
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blacklistDate = epoch.get_epoch()
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try:
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self._dbExecute("INSERT INTO blacklist (hash, dataType, blacklistDate, expire) VALUES(?, ?, ?, ?);", (str(hashed), dataType, blacklistDate, expire))
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except sqlite3.IntegrityError:
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pass
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