120 lines
4.0 KiB
Python
120 lines
4.0 KiB
Python
'''
|
|
Onionr - P2P Anonymous Storage Network
|
|
|
|
This file handles maintenence of a blacklist database, for blocks and peers
|
|
'''
|
|
'''
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
'''
|
|
import sqlite3, os, logger
|
|
class OnionrBlackList:
|
|
def __init__(self, coreInst):
|
|
self.blacklistDB = coreInst.dataDir + 'blacklist.db'
|
|
self._core = coreInst
|
|
|
|
if not os.path.exists(self.blacklistDB):
|
|
self.generateDB()
|
|
return
|
|
|
|
def inBlacklist(self, data):
|
|
hashed = self._core._utils.bytesToStr(self._core._crypto.sha3Hash(data))
|
|
retData = False
|
|
|
|
if not hashed.isalnum():
|
|
raise Exception("Hashed data is not alpha numeric")
|
|
if len(hashed) > 64:
|
|
raise Exception("Hashed data is too large")
|
|
|
|
for i in self._dbExecute("SELECT * FROM blacklist WHERE hash = ?", (hashed,)):
|
|
retData = True # this only executes if an entry is present by that hash
|
|
break
|
|
|
|
return retData
|
|
|
|
def _dbExecute(self, toExec, params = ()):
|
|
conn = sqlite3.connect(self.blacklistDB)
|
|
c = conn.cursor()
|
|
retData = c.execute(toExec, params)
|
|
conn.commit()
|
|
return retData
|
|
|
|
def deleteBeforeDate(self, date):
|
|
# TODO, delete blacklist entries before date
|
|
return
|
|
|
|
def deleteExpired(self, dataType=0):
|
|
'''Delete expired entries'''
|
|
deleteList = []
|
|
curTime = self._core._utils.getEpoch()
|
|
|
|
try:
|
|
int(dataType)
|
|
except AttributeError:
|
|
raise TypeError("dataType must be int")
|
|
|
|
for i in self._dbExecute('SELECT * FROM blacklist WHERE dataType = ?', (dataType,)):
|
|
if i[1] == dataType:
|
|
if (curTime - i[2]) >= i[3]:
|
|
deleteList.append(i[0])
|
|
|
|
for thing in deleteList:
|
|
self._dbExecute("DELETE FROM blacklist WHERE hash = ?", (thing,))
|
|
|
|
def generateDB(self):
|
|
self._dbExecute('''CREATE TABLE blacklist(
|
|
hash text primary key not null,
|
|
dataType int,
|
|
blacklistDate int,
|
|
expire int
|
|
);
|
|
''')
|
|
return
|
|
|
|
def clearDB(self):
|
|
self._dbExecute('''DELETE FROM blacklist;''')
|
|
|
|
def getList(self):
|
|
data = self._dbExecute('SELECT * FROM blacklist')
|
|
myList = []
|
|
for i in data:
|
|
myList.append(i[0])
|
|
return myList
|
|
|
|
def addToDB(self, data, dataType=0, expire=0):
|
|
'''Add to the blacklist. Intended to be block hash, block data, peers, or transport addresses
|
|
0=block
|
|
1=peer
|
|
2=pubkey
|
|
'''
|
|
# we hash the data so we can remove data entirely from our node's disk
|
|
hashed = self._core._utils.bytesToStr(self._core._crypto.sha3Hash(data))
|
|
if len(hashed) > 64:
|
|
raise Exception("Hashed data is too large")
|
|
|
|
if not hashed.isalnum():
|
|
raise Exception("Hashed data is not alpha numeric")
|
|
try:
|
|
int(dataType)
|
|
except ValueError:
|
|
raise Exception("dataType is not int")
|
|
try:
|
|
int(expire)
|
|
except ValueError:
|
|
raise Exception("expire is not int")
|
|
if self.inBlacklist(hashed):
|
|
return
|
|
insert = (hashed,)
|
|
blacklistDate = self._core._utils.getEpoch()
|
|
self._dbExecute("INSERT INTO blacklist (hash, dataType, blacklistDate, expire) VALUES(?, ?, ?, ?);", (str(hashed), dataType, blacklistDate, expire))
|