Onionr/onionr/onionrproofs.py

306 lines
9.6 KiB
Python
Raw Normal View History

2018-02-22 22:55:42 +00:00
'''
2018-11-11 02:10:58 +00:00
Onionr - P2P Anonymous Storage Network
2018-02-22 22:55:42 +00:00
Proof of work module
'''
'''
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/>.
'''
2018-04-23 03:49:53 +00:00
2018-07-08 07:51:23 +00:00
import nacl.encoding, nacl.hash, nacl.utils, time, math, threading, binascii, logger, sys, base64, json
2018-12-24 06:12:46 +00:00
import core, onionrutils, config
import onionrblockapi
def getDifficultyModifier(coreOrUtilsInst=None):
'''Accepts a core or utils instance returns
the difficulty modifier for block storage based
on a variety of factors, currently only disk use.
'''
classInst = coreOrUtilsInst
retData = 0
if isinstance(classInst, core.Core):
useFunc = classInst._utils.storageCounter.getPercent
elif isinstance(classInst, onionrutils.OnionrUtils):
useFunc = classInst.storageCounter.getPercent
else:
useFunc = core.Core()._utils.storageCounter.getPercent
percentUse = useFunc()
if percentUse >= 0.50:
retData += 1
elif percentUse >= 0.75:
retData += 2
2018-12-24 06:12:46 +00:00
elif percentUse >= 0.95:
retData += 3
2018-12-24 06:12:46 +00:00
return retData
def getDifficultyForNewBlock(data, ourBlock=True):
'''
Get difficulty for block. Accepts size in integer, Block instance, or str/bytes full block contents
'''
retData = 0
dataSize = 0
if isinstance(data, onionrblockapi.Block):
dataSize = len(data.getRaw().encode('utf-8'))
elif isinstance(data, str):
dataSize = len(data.encode('utf-8'))
2018-12-26 06:14:05 +00:00
elif isinstance(data, bytes):
dataSize = len(data)
2018-12-24 06:12:46 +00:00
elif isinstance(data, int):
dataSize = data
else:
raise ValueError('not Block, str, or int')
if ourBlock:
minDifficulty = config.get('general.minimum_send_pow')
else:
minDifficulty = config.get('general.minimum_block_pow')
retData = max(minDifficulty, math.floor(dataSize / 100000)) + getDifficultyModifier()
2018-12-24 06:12:46 +00:00
return retData
2018-11-11 02:10:58 +00:00
def getHashDifficulty(h):
'''
Return the amount of leading zeroes in a hex hash string (h)
'''
difficulty = 0
assert type(h) is str
for character in h:
if character == '0':
difficulty += 1
2018-12-09 17:29:39 +00:00
else:
break
2018-11-11 02:10:58 +00:00
return difficulty
def hashMeetsDifficulty(h):
'''
Return bool for a hash string to see if it meets pow difficulty defined in config
'''
config.reload()
hashDifficulty = getHashDifficulty(h)
2018-12-09 17:29:39 +00:00
try:
expected = int(config.get('general.minimum_block_pow'))
except TypeError:
raise ValueError('Missing general.minimum_block_pow config')
2018-11-11 02:10:58 +00:00
if hashDifficulty >= expected:
return True
else:
return False
2018-04-23 03:49:53 +00:00
class DataPOW:
2018-07-22 00:20:28 +00:00
def __init__(self, data, forceDifficulty=0, threadCount = 5):
self.foundHash = False
self.difficulty = 0
self.data = data
self.threadCount = threadCount
2018-12-24 06:12:46 +00:00
self.rounds = 0
2018-11-11 02:10:58 +00:00
config.reload()
2018-07-22 00:20:28 +00:00
if forceDifficulty == 0:
dataLen = sys.getsizeof(data)
self.difficulty = math.floor(dataLen / 1000000)
if self.difficulty <= 2:
self.difficulty = 4
else:
self.difficulty = forceDifficulty
try:
self.data = self.data.encode()
except AttributeError:
pass
self.data = nacl.hash.blake2b(self.data)
logger.info('Computing POW (difficulty: %s)...' % self.difficulty)
self.mainHash = '0' * 70
self.puzzle = self.mainHash[0:min(self.difficulty, len(self.mainHash))]
myCore = core.Core()
for i in range(max(1, threadCount)):
t = threading.Thread(name = 'thread%s' % i, target = self.pow, args = (True,myCore))
t.start()
return
def pow(self, reporting = False, myCore = None):
startTime = math.floor(time.time())
self.hashing = True
self.reporting = reporting
iFound = False # if current thread is the one that found the answer
answer = ''
heartbeat = 200000
hbCount = 0
while self.hashing:
rand = nacl.utils.random()
token = nacl.hash.blake2b(rand + self.data).decode()
2018-12-24 06:12:46 +00:00
self.rounds += 1
#print(token)
if self.puzzle == token[0:self.difficulty]:
self.hashing = False
iFound = True
break
if iFound:
endTime = math.floor(time.time())
if self.reporting:
logger.debug('Found token after %s seconds: %s' % (endTime - startTime, token), timestamp=True)
2018-12-24 06:12:46 +00:00
logger.debug('Round count: %s' % (self.rounds,))
self.result = (token, rand)
def shutdown(self):
self.hashing = False
self.puzzle = ''
def changeDifficulty(self, newDiff):
self.difficulty = newDiff
def getResult(self):
'''
Returns the result then sets to false, useful to automatically clear the result
'''
try:
retVal = self.result
except AttributeError:
retVal = False
self.result = False
return retVal
def waitForResult(self):
'''
Returns the result only when it has been found, False if not running and not found
'''
result = False
try:
while True:
result = self.getResult()
if not self.hashing:
break
else:
time.sleep(2)
except KeyboardInterrupt:
self.shutdown()
logger.warn('Got keyboard interrupt while waiting for POW result, stopping')
return result
2018-02-22 22:55:42 +00:00
class POW:
2018-12-24 06:12:46 +00:00
def __init__(self, metadata, data, threadCount = 5, forceDifficulty=0, coreInst=None):
2018-02-22 22:55:42 +00:00
self.foundHash = False
2018-05-05 20:07:32 +00:00
self.difficulty = 0
self.data = data
2018-07-08 07:51:23 +00:00
self.metadata = metadata
self.threadCount = threadCount
2018-05-05 20:07:32 +00:00
2018-12-24 06:12:46 +00:00
try:
assert isinstance(coreInst, core.Core)
except AssertionError:
myCore = core.Core()
else:
myCore = coreInst
2018-07-08 07:51:23 +00:00
dataLen = len(data) + len(json.dumps(metadata))
2018-05-05 20:07:32 +00:00
2018-12-24 06:12:46 +00:00
if forceDifficulty > 0:
self.difficulty = forceDifficulty
else:
# Calculate difficulty. Dumb for now, may use good algorithm in the future.
self.difficulty = getDifficultyForNewBlock(dataLen)
2018-05-05 20:07:32 +00:00
try:
self.data = self.data.encode()
except AttributeError:
pass
logger.info('Computing POW (difficulty: %s)...' % self.difficulty)
2018-02-22 22:55:42 +00:00
2018-07-08 07:51:23 +00:00
self.mainHash = '0' * 64
self.puzzle = self.mainHash[0:min(self.difficulty, len(self.mainHash))]
2018-12-24 06:12:46 +00:00
for i in range(max(1, threadCount)):
t = threading.Thread(name = 'thread%s' % i, target = self.pow, args = (True,myCore))
t.start()
2018-11-11 02:10:58 +00:00
self.myCore = myCore
2018-02-22 22:55:42 +00:00
return
2018-06-20 20:56:28 +00:00
def pow(self, reporting = False, myCore = None):
startTime = math.floor(time.time())
self.hashing = True
self.reporting = reporting
iFound = False # if current thread is the one that found the answer
answer = ''
heartbeat = 200000
hbCount = 0
while self.hashing:
rand = nacl.utils.random()
2018-07-08 07:51:23 +00:00
#token = nacl.hash.blake2b(rand + self.data).decode()
self.metadata['powRandomToken'] = base64.b64encode(rand).decode()
payload = json.dumps(self.metadata).encode() + b'\n' + self.data
token = myCore._crypto.sha3Hash(payload)
try:
# on some versions, token is bytes
token = token.decode()
except AttributeError:
pass
2018-06-20 20:56:28 +00:00
if self.puzzle == token[0:self.difficulty]:
self.hashing = False
iFound = True
2018-07-08 07:51:23 +00:00
self.result = payload
2018-06-20 20:56:28 +00:00
break
if iFound:
endTime = math.floor(time.time())
if self.reporting:
logger.debug('Found token after %s seconds: %s' % (endTime - startTime, token), timestamp=True)
2018-02-22 22:55:42 +00:00
def shutdown(self):
self.hashing = False
2018-02-26 02:30:43 +00:00
self.puzzle = ''
2018-04-19 01:47:35 +00:00
2018-02-26 02:30:43 +00:00
def changeDifficulty(self, newDiff):
self.difficulty = newDiff
def getResult(self):
2018-04-23 03:49:53 +00:00
'''
Returns the result then sets to false, useful to automatically clear the result
'''
2018-02-26 02:30:43 +00:00
try:
retVal = self.result
except AttributeError:
retVal = False
2018-02-26 02:30:43 +00:00
self.result = False
2018-04-19 01:47:35 +00:00
return retVal
2018-06-20 20:56:28 +00:00
def waitForResult(self):
'''
Returns the result only when it has been found, False if not running and not found
'''
result = False
try:
while True:
result = self.getResult()
if not self.hashing:
break
else:
time.sleep(2)
except KeyboardInterrupt:
self.shutdown()
logger.warn('Got keyboard interrupt while waiting for POW result, stopping')
return result