delete expired blocks

This commit is contained in:
Kevin Froman 2018-09-30 11:53:39 -05:00
parent b344c53563
commit 5f67cc388f
5 changed files with 26 additions and 12 deletions

View File

@ -628,7 +628,7 @@ class Core:
c = conn.cursor()
date = int(self._utils.getEpoch())
execute = 'SELECT hash FROM hashes WHERE expire >= %s ORDER BY dateReceived;' % (date,)
execute = 'SELECT hash FROM hashes WHERE expire <= %s ORDER BY dateReceived;' % (date,)
rows = list()
for row in c.execute(execute):
@ -675,7 +675,7 @@ class Core:
conn.close()
return True
def insertBlock(self, data, header='txt', sign=False, encryptType='', symKey='', asymPeer='', meta = None):
def insertBlock(self, data, header='txt', sign=False, encryptType='', symKey='', asymPeer='', meta = None, expire=None):
'''
Inserts a block into the network
encryptType must be specified to encrypt a block
@ -754,13 +754,19 @@ class Core:
metadata['signer'] = signer
metadata['time'] = str(self._utils.getEpoch())
# ensure expire is integer and of sane length
if type(expire) is not type(None):
assert len(str(int(expire))) < 14
metadata['expire'] = expire
# send block data (and metadata) to POW module to get tokenized block data
proof = onionrproofs.POW(metadata, data)
payload = proof.waitForResult()
if payload != False:
retData = self.setData(payload)
self.addToBlockDB(retData, selfInsert=True, dataSaved=True)
self.setBlockType(retData, meta['type'])
#self.setBlockType(retData, meta['type'])
self._utils.processBlockMetadata(retData)
self.daemonQueueAdd('uploadBlock', retData)
if retData != False:

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@ -41,9 +41,9 @@ except ImportError:
raise Exception("You need the PySocks module (for use with socks5 proxy to use Tor)")
ONIONR_TAGLINE = 'Anonymous P2P Platform - GPLv3 - https://Onionr.VoidNet.Tech'
ONIONR_VERSION = '0.2.0' # for debugging and stuff
ONIONR_VERSION = '0.3.0' # for debugging and stuff
ONIONR_VERSION_TUPLE = tuple(ONIONR_VERSION.split('.')) # (MAJOR, MINOR, VERSION)
API_VERSION = '4' # increments of 1; only change when something fundemental about how the API works changes. This way other nodes know how to communicate without learning too much information about you.
API_VERSION = '5' # increments of 1; only change when something fundemental about how the API works changes. This way other nodes know how to communicate without learning too much information about you.
class Onionr:
def __init__(self):

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@ -25,7 +25,7 @@ class Block:
blockCacheOrder = list() # NEVER write your own code that writes to this!
blockCache = dict() # should never be accessed directly, look at Block.getCache()
def __init__(self, hash = None, core = None, type = None, content = None):
def __init__(self, hash = None, core = None, type = None, content = None, expire=None):
# take from arguments
# sometimes people input a bytes object instead of str in `hash`
if (not hash is None) and isinstance(hash, bytes):
@ -35,6 +35,7 @@ class Block:
self.core = core
self.btype = type
self.bcontent = content
self.expire = expire
# initialize variables
self.valid = True

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@ -263,7 +263,7 @@ class OnionrUtils:
myBlock = Block(blockHash, self._core)
if myBlock.isEncrypted:
myBlock.decrypt()
if myBlock.decrypted:
if (myBlock.isEncrypted and myBlock.decrypted) or (not myBlock.isEncrypted):
blockType = myBlock.getMetadata('type') # we would use myBlock.getType() here, but it is bugged with encrypted blocks
signer = self.bytesToStr(myBlock.signer)
valid = myBlock.verifySig()
@ -276,9 +276,9 @@ class OnionrUtils:
pass
# Set block expire time if specified
try:
expireTime = myBlock.getMetadata('expire')
assert len(int(expireTime)) < 20 # test that expire time is an integer of sane length (for epoch)
except (AssertionError, ValueError) as e:
expireTime = myBlock.getHeader('expire')
assert len(str(int(expireTime))) < 20 # test that expire time is an integer of sane length (for epoch)
except (AssertionError, ValueError, TypeError) as e:
pass
else:
self._core.updateBlockInfo(blockHash, 'expire', expireTime)
@ -379,6 +379,12 @@ class OnionrUtils:
if not self.isIntegerString(metadata[i]):
logger.warn('Block metadata time stamp is not integer string')
break
elif i == 'expire':
try:
assert int(metadata[i]) > self.getEpoch()
except AssertionError:
logger.warn('Block is expired')
break
else:
# if metadata loop gets no errors, it does not break, therefore metadata is valid
# make sure we do not have another block with the same data content (prevent data duplication and replay attacks)
@ -532,6 +538,7 @@ class OnionrUtils:
if self._core._crypto.sha3Hash(newBlock.read()) == block.replace('.dat', ''):
self._core.addToBlockDB(block.replace('.dat', ''), dataSaved=True)
logger.info('Imported block %s.' % block)
self._core._utils.processBlockMetadata(block)
else:
logger.warn('Failed to verify hash for %s' % block)

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@ -21,4 +21,4 @@
class OnionrValues:
def __init__(self):
self.passwordLength = 20
self.blockMetadataLengths = {'meta': 1000, 'sig': 200, 'signer': 200, 'time': 10, 'powRandomToken': 1000, 'encryptType': 4} #TODO properly refine values to minimum needed
self.blockMetadataLengths = {'meta': 1000, 'sig': 200, 'signer': 200, 'time': 10, 'powRandomToken': 1000, 'encryptType': 4, 'expire': 14} #TODO properly refine values to minimum needed