123 lines
4.1 KiB
Python
123 lines
4.1 KiB
Python
'''
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Onionr - Private P2P Communication
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This file handles maintenence of a blacklist database, for blocks and peers
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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, logger
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class OnionrBlackList:
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def __init__(self, coreInst):
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self.blacklistDB = coreInst.dataDir + 'blacklist.db'
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self._core = coreInst
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if not os.path.exists(self.blacklistDB):
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self.generateDB()
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return
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def inBlacklist(self, data):
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hashed = self._core._utils.bytesToStr(self._core._crypto.sha3Hash(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 = self._core._utils.getEpoch()
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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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self._dbExecute('''CREATE TABLE blacklist(
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hash text primary key not null,
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dataType int,
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blacklistDate int,
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expire int
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);
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''')
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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 = self._core._utils.bytesToStr(self._core._crypto.sha3Hash(data))
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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 = self._core._utils.getEpoch()
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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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