def handle_readbuf(self):
netid = self.server.netid
while self.ac_in_buffer:
if self.ac_in_buffer[:4] != netid:
p = self.ac_in_buffer.find(netid)
if p == -1:
p = asynchat.find_prefix_at_end(self.ac_in_buffer, netid)
if p:
self.ac_in_buffer = self.ac_in_buffer[-p:]
else:
self.ac_in_buffer = b''
break
self.ac_in_buffer = self.ac_in_buffer[p:]
cmd = self.ac_in_buffer[4:0x10].rstrip(b'\0').decode('utf8')
payloadLen = unpack('<L', self.ac_in_buffer[0x10:0x14])[0]
if payloadLen > MAX_PACKET_PAYLOAD:
raise RuntimeError('Packet payload is too long (%d bytes)' % (payloadLen,))
payloadEnd = payloadLen + 0x18
if len(self.ac_in_buffer) < payloadEnd:
# Don't have the whole packet yet
break
method = 'doCmd_' + cmd
cksum = self.ac_in_buffer[0x14:0x18]
payload = self.ac_in_buffer[0x18:payloadEnd]
self.ac_in_buffer = self.ac_in_buffer[payloadEnd:]
realcksum = dblsha(payload)[:4]
if realcksum != cksum:
self.logger.debug('Wrong checksum on `%s\' message (%s vs actual:%s); ignoring' % (cmd, b2a_hex(cksum), b2a_hex(realcksum)))
return
if hasattr(self, method):
getattr(self, method)(payload)
def withFirst(self, f): if isinstance(f, Txn): f = f.txid steps = self._steps for s in steps: f = dblsha(f + s) return f
def recalculate(self, detailed=False):
L = self.data
steps = []
if detailed:
detail = []
PreL = []
StartL = 0
else:
detail = None
PreL = [None]
StartL = 2
Ll = len(L)
if isinstance(L[1] if Ll > 1 else L[0], Txn):
L = list(map(lambda a: a.txid if a else a, L))
else:
L = list(L)
if detailed or Ll > 1:
while True:
if detailed:
detail += L
if Ll == 1:
break
steps.append(L[1])
if Ll % 2:
L += [L[-1]]
L = PreL + [
dblsha(L[i] + L[i + 1]) for i in range(StartL, Ll, 2)
]
Ll = len(L)
self._steps = steps
self.detail = detail
def withFirst(self, f):
if isinstance(f, Txn):
f = f.txid
steps = self._steps
for s in steps:
f = dblsha(f + s)
return f
def recalculate(self, detailed=False): L = self.data steps = [] if detailed: detail = [] PreL = [] StartL = 0 else: detail = None PreL = [None] StartL = 2 Ll = len(L) if detailed or Ll > 1: if isinstance(L[1] if Ll > 1 else L[0], Txn): L = list(map(lambda a: a.txid if a else a, L)) while True: if detailed: detail += L if Ll == 1: break steps.append(L[1]) if Ll % 2: L += [L[-1]] L = PreL + [dblsha(L[i] + L[i + 1]) for i in range(StartL, Ll, 2)] Ll = len(L) self._steps = steps self.detail = detail
def makeMessage(self, cmd, payload=b""):
cmd = cmd.encode("utf8")
assert len(cmd) <= 12
cmd += b"\0" * (12 - len(cmd))
cksum = dblsha(payload)[:4]
payloadLen = pack("<L", len(payload))
return self.netid + cmd + payloadLen + cksum + payload
def makeMessage(self, cmd, payload = b''):
cmd = cmd.encode('utf8')
assert len(cmd) <= 12
cmd += b'\0' * (12 - len(cmd))
cksum = dblsha(payload)[:4]
payloadLen = pack('<L', len(payload))
return self.netid + cmd + payloadLen + cksum + payload
def idhash(self): if self.data[4:6] == b'\0\1': if hasattr(self, 'txid'): del self.txid raise NotImplementedError self.txid = dblsha(self.data) if hasattr(self, 'witness_hash'): del self.witness_hash
def makeMessage(self, cmd, payload=b''):
cmd = cmd.encode('utf8')
assert len(cmd) <= 12
cmd += b'\0' * (12 - len(cmd))
cksum = dblsha(payload)[:4]
payloadLen = pack('<L', len(payload))
return self.netid + cmd + payloadLen + cksum + payload
def idhash(self):
if self.data[4:6] == b'\0\1':
if hasattr(self, 'txid'):
del self.txid
raise NotImplementedError
self.txid = dblsha(self.data)
if hasattr(self, 'witness_hash'):
del self.witness_hash
def _Address2PKH(addr):
try:
addr = b58decode(addr, 25)
except:
return None
if addr is None:
return None
ver = addr[0]
cksumA = addr[-4:]
cksumB = dblsha(addr[:-4])[:4]
if cksumA != cksumB:
return None
return (ver, addr[1:-4])
def CalculateWitnessCommitment(txnobjs, nonce, force=False): gentx_withash = nonce withashes = (gentx_withash,) + tuple(a.get_witness_hash() for a in txnobjs[1:]) if not force: txids = (gentx_withash,) + tuple(a.txid for a in txnobjs[1:]) if withashes == txids: # Unnecessary return None wmr = MerkleTree(data=withashes).merkleRoot() commitment = util.dblsha(wmr + nonce) return commitment
def _Address2PKH(addr): try: addr = b58decode(addr, 25) except: return None if addr is None: return None ver = addr[0] cksumA = addr[-4:] cksumB = dblsha(addr[:-4])[:4] if cksumA != cksumB: return None return (ver, addr[1:-4])
def handle_readbuf(self):
netid = self.server.netid
while self.ac_in_buffer:
if self.ac_in_buffer[:4] != netid:
p = self.ac_in_buffer.find(netid)
if p == -1:
p = asynchat.find_prefix_at_end(self.ac_in_buffer, netid)
if p:
self.ac_in_buffer = self.ac_in_buffer[-p:]
else:
self.ac_in_buffer = b''
break
self.ac_in_buffer = self.ac_in_buffer[p:]
cmd = self.ac_in_buffer[4:0x10].rstrip(b'\0').decode('utf8')
payloadLen = unpack('<L', self.ac_in_buffer[0x10:0x14])[0]
if payloadLen > MAX_PACKET_PAYLOAD:
raise RuntimeError('Packet payload is too long (%d bytes)' %
(payloadLen, ))
payloadEnd = payloadLen + 0x18
if len(self.ac_in_buffer) < payloadEnd:
# Don't have the whole packet yet
break
method = 'doCmd_' + cmd
cksum = self.ac_in_buffer[0x14:0x18]
payload = self.ac_in_buffer[0x18:payloadEnd]
self.ac_in_buffer = self.ac_in_buffer[payloadEnd:]
realcksum = dblsha(payload)[:4]
if realcksum != cksum:
self.logger.debug(
'Wrong checksum on `%s\' message (%s vs actual:%s); ignoring'
% (cmd, b2a_hex(cksum), b2a_hex(realcksum)))
return
if hasattr(self, method):
getattr(self, method)(payload)
def buildStratumData(share, merkleroot):
(prevBlock, height, bits) = MM.currentBlock
data = b'\x02\0\0\0'
data += prevBlock
data += merkleroot
data += share['ntime'][::-1]
data += bits
data += share['nonce'][::-1]
share['bits'] = b2a_hex(bits[::-1]).decode('utf8')
share['height'] = height
share['merkleroot'] = b2a_hex(merkleroot[::-1]).decode('utf8')
share['prevblock'] = b2a_hex(prevBlock[::-1]).decode('utf8')
share['blkhash'] = b2a_hex(dblsha(data)[::-1]).decode('utf8')
if ScryptCoin:
share['crypto'] = 'scrypt'
else:
share['crypto'] = 'sha256'
share['coin'] = CryptoCoin
share['server'] = ServerName
# do not touch!
share['data'] = data
return data
def checkShare(share):
shareTime = share["time"] = time()
username = share["username"]
isstratum = False
if "data" in share:
# getwork/GBT
checkData(share)
data = share["data"]
if username not in workLog:
raise RejectedShare("unknown-user")
MWL = workLog[username]
shareMerkleRoot = data[36:68]
if "blkdata" in share:
pl = share["blkdata"]
(txncount, pl) = varlenDecode(pl)
cbtxn = bitcoin.txn.Txn(pl)
othertxndata = cbtxn.disassemble(retExtra=True)
coinbase = cbtxn.getCoinbase()
wliPos = coinbase[0] + 2
wliLen = coinbase[wliPos - 1]
wli = coinbase[wliPos : wliPos + wliLen]
mode = "MC"
moden = 1
else:
wli = shareMerkleRoot
mode = "MRD"
moden = 0
coinbase = None
else:
# Stratum
isstratum = True
wli = share["jobid"]
buildStratumData(share, b"\0" * 32)
mode = "MC"
moden = 1
othertxndata = b""
if None not in workLog:
# We haven't yet sent any stratum work for this block
raise RejectedShare("unknown-work")
MWL = workLog[None]
if wli not in MWL:
raise RejectedShare("unknown-work")
(wld, issueT) = MWL[wli]
share[mode] = wld
share["issuetime"] = issueT
(workMerkleTree, workCoinbase) = wld[1:3]
share["merkletree"] = workMerkleTree
if "jobid" in share:
cbtxn = deepcopy(workMerkleTree.data[0])
coinbase = workCoinbase + share["extranonce1"] + share["extranonce2"]
cbtxn.setCoinbase(coinbase)
cbtxn.assemble()
data = buildStratumData(share, workMerkleTree.withFirst(cbtxn))
shareMerkleRoot = data[36:68]
if data in DupeShareHACK:
raise RejectedShare("duplicate")
DupeShareHACK[data] = None
blkhash = dblsha(data)
if blkhash[28:] != b"\0\0\0\0":
raise RejectedShare("H-not-zero")
blkhashn = LEhash2int(blkhash)
global networkTarget
logfunc = getattr(checkShare.logger, "info" if blkhashn <= networkTarget else "debug")
logfunc("BLKHASH: %64x" % (blkhashn,))
logfunc(" TARGET: %64x" % (networkTarget,))
# NOTE: this isn't actually needed for MC mode, but we're abusing it for a trivial share check...
txlist = workMerkleTree.data
txlist = [deepcopy(txlist[0])] + txlist[1:]
cbtxn = txlist[0]
cbtxn.setCoinbase(coinbase or workCoinbase)
cbtxn.assemble()
if blkhashn <= networkTarget:
logfunc("Submitting upstream")
RBDs.append(deepcopy((data, txlist, share.get("blkdata", None), workMerkleTree, share, wld)))
if not moden:
payload = assembleBlock(data, txlist)
else:
payload = share["data"]
if len(othertxndata):
payload += share["blkdata"]
else:
payload += assembleBlock(data, txlist)[80:]
logfunc("Real block payload: %s" % (b2a_hex(payload).decode("utf8"),))
RBPs.append(payload)
threading.Thread(target=blockSubmissionThread, args=(payload, blkhash, share)).start()
bcnode.submitBlock(payload)
if config.DelayLogForUpstream:
share["upstreamRejectReason"] = PendingUpstream
else:
share["upstreamRejectReason"] = None
share["upstreamResult"] = True
MM.updateBlock(blkhash)
# Gotwork hack...
if gotwork and blkhashn <= config.GotWorkTarget:
try:
coinbaseMrkl = cbtxn.data
coinbaseMrkl += blkhash
steps = workMerkleTree._steps
coinbaseMrkl += pack("B", len(steps))
for step in steps:
coinbaseMrkl += step
coinbaseMrkl += b"\0\0\0\0"
info = {}
info["hash"] = b2a_hex(blkhash).decode("ascii")
info["header"] = b2a_hex(data).decode("ascii")
info["coinbaseMrkl"] = b2a_hex(coinbaseMrkl).decode("ascii")
thr = threading.Thread(target=submitGotwork, args=(info,))
thr.daemon = True
thr.start()
except:
checkShare.logger.warning("Failed to build gotwork request")
if "target" in share:
workTarget = share["target"]
elif len(wld) > 6:
workTarget = wld[6]
else:
workTarget = None
if workTarget is None:
workTarget = config.ShareTarget
if blkhashn > workTarget:
raise RejectedShare("high-hash")
share["target"] = workTarget
share["_targethex"] = "%064x" % (workTarget,)
shareTimestamp = unpack("<L", data[68:72])[0]
if shareTime < issueT - 120:
raise RejectedShare("stale-work")
if shareTimestamp < shareTime - 300:
raise RejectedShare("time-too-old")
if shareTimestamp > shareTime + 7200:
raise RejectedShare("time-too-new")
if moden:
cbpre = workCoinbase
cbpreLen = len(cbpre)
if coinbase[:cbpreLen] != cbpre:
raise RejectedShare("bad-cb-prefix")
# Filter out known "I support" flags, to prevent exploits
for ff in (b"/P2SH/", b"NOP2SH", b"p2sh/CHV", b"p2sh/NOCHV"):
if coinbase.find(ff) > max(-1, cbpreLen - len(ff)):
raise RejectedShare("bad-cb-flag")
if len(coinbase) > 100:
raise RejectedShare("bad-cb-length")
if shareMerkleRoot != workMerkleTree.withFirst(cbtxn):
raise RejectedShare("bad-txnmrklroot")
if len(othertxndata):
allowed = assembleBlock(data, txlist)[80:]
if allowed != share["blkdata"]:
raise RejectedShare("bad-txns")
if config.DynamicTargetting and username in userStatus:
# NOTE: userStatus[username] only doesn't exist across restarts
status = userStatus[username]
target = status[0] or config.ShareTarget
if target == workTarget:
userStatus[username][2] += 1
else:
userStatus[username][2] += float(target) / workTarget
if isstratum and userStatus[username][2] > config.DynamicTargetGoal * 2:
stratumsrv.quickDifficultyUpdate(username)
def idhash(self): self.txid = dblsha(self.data)
def checkShare(share):
global rskLastReceivedShareTime
global rskSubmittedShares
shareTime = share['time'] = time()
username = share['username']
checkQuickDiffAdjustment = False
if 'data' in share:
# getwork/GBT
data = share['data']
shareMerkleRoot = data[36:68]
if 'blkdata' in share:
pl = share['blkdata']
(txncount, pl) = varlenDecode(pl)
cbtxn = bitcoin.txn.Txn(pl)
othertxndata = cbtxn.disassemble(retExtra=True)
coinbase = cbtxn.getCoinbase()
wliPos = coinbase[0] + 2
wliLen = coinbase[wliPos - 1]
wli = coinbase[wliPos:wliPos + wliLen]
mode = 'MC'
moden = 1
else:
wli = shareMerkleRoot
mode = 'MRD'
moden = 0
coinbase = None
(wld, issueT) = LookupWork(username, wli)
checkData(share, wld)
else:
# Stratum
checkQuickDiffAdjustment = config.DynamicTargetQuick
wli = share['jobid']
(wld, issueT) = LookupWork(None, wli)
mode = 'MC'
moden = 1
othertxndata = b''
share[mode] = wld
share['issuetime'] = issueT
(workMerkleTree, workCoinbase) = wld[1:3]
share['merkletree'] = workMerkleTree
if 'jobid' in share:
cbtxn = deepcopy(workMerkleTree.data[0])
coinbase = workCoinbase + share['extranonce1'] + share['extranonce2']
cbtxn.setCoinbase(coinbase)
cbtxn.assemble()
data = buildStratumData(share, workMerkleTree.withFirst(cbtxn),
workMerkleTree.MP['_BlockVersionBytes'])
shareMerkleRoot = data[36:68]
if data in DupeShareHACK:
raise RejectedShare('duplicate')
DupeShareHACK[data] = None
blkhash = dblsha(data)
if not hasattr(config, 'DEV_MODE_ON') or not config.DEV_MODE_ON:
if not _reachesLowestDifficulty(blkhash):
if len(share[mode]) >= 4:
# currentblock may be changed, so we retry looking up some previous block saved (in RKS could be usefull prev blocks).
blockToUse = (share[mode][3], share[mode][0], share[mode][4])
retryData = buildStratumData(
share, workMerkleTree.withFirst(cbtxn),
workMerkleTree.MP['_BlockVersionBytes'], blockToUse)
shareMerkleRoot = retryData[36:68]
blkhash = dblsha(retryData)
# retryData could be equal than data so we check again previous conditions
if retryData == data or not _reachesLowestDifficulty(blkhash):
raise RejectedShare('H-not-zero')
data = retryData
DupeShareHACK[data] = None
else:
raise RejectedShare('H-not-zero')
blkhashn = LEhash2int(blkhash)
global networkTarget
logfunc = getattr(checkShare.logger,
'info' if blkhashn <= networkTarget else 'debug')
logfunc('BLKHASH: %64x' % (blkhashn, ))
logfunc(' TARGET: %64x' % (networkTarget, ))
# NOTE: this isn't actually needed for MC mode, but we're abusing it for a trivial share check...
txlist = workMerkleTree.data
txlist = [
deepcopy(txlist[0]),
] + txlist[1:]
cbtxn = txlist[0]
cbtxn.setCoinbase(coinbase or workCoinbase)
cbtxn.assemble()
rootstockBlockHash = None
rootstockTarget = None
if hasattr(workMerkleTree, "rootstockBlockInfo"
) and workMerkleTree.rootstockBlockInfo is not None:
rootstockBlockHash = workMerkleTree.rootstockBlockInfo[0]
if hasattr(config, 'DEV_MODE_ON') and config.DEV_MODE_ON:
rootstockTarget = bdiff2target(config.RSK_ELOIPOOL_DIFF)
else:
rootstockTarget = workMerkleTree.rootstockBlockInfo[1]
submitRootstock = rootstockTarget is not None and blkhashn <= rootstockTarget
if rskLastReceivedShareTime is None:
rskLastReceivedShareTime = int(round(time() * 1000))
rskSubmittedShares = 0
lastReceivedShareTimeNow = int(round(time() * 1000))
if lastReceivedShareTimeNow - rskLastReceivedShareTime >= 1000:
rskSubmittedShares = 0
rskLastReceivedShareTime = lastReceivedShareTimeNow
checkShare.logger.info(
"ROOTSTOCK_DEBUG: RSKValidShare: {0} {1} {2}".format(
blkhashn, rootstockTarget, submitRootstock))
if lastReceivedShareTimeNow - rskLastReceivedShareTime < 1000 and rskSubmittedShares < 1 and submitRootstock:
rskSubmittedShares += 1
else:
submitRootstock = False
submitBitcoin = blkhashn <= networkTarget
#checkShare.logger.info("ROOTSTOCK_DEBUG: BTCValidShare: {0} {1} {2}".format(blkhashn, networkTarget, submitBitcoin))
if submitBitcoin or submitRootstock:
if submitBitcoin:
share['BTC_SOLUTION'] = True
logfunc("Submitting upstream")
RBDs.append(
deepcopy((data, txlist, share.get('blkdata', None),
workMerkleTree, share, wld)))
if not moden:
payload = assembleBlock(data, txlist)
else:
payload = share['data']
if len(othertxndata):
payload += share['blkdata']
else:
payload += assembleBlock(data, txlist)[80:]
if submitRootstock:
share['RSK_SOLUTION'] = True
blockhashHexRskSubmit = b2a_hex(blkhash).decode('ascii')
blockheaderHexRskSubmit = b2a_hex(share['data']).decode('ascii')
coinbaseHexRskSubmit = b2a_hex(cbtxn.data).decode('ascii')
coinbaseHashHexRskSubmit = b2a_hex(cbtxn.txid).decode('ascii')
merkleHashesRskSubmit = [
b2a_hex(x).decode('ascii') for x in workMerkleTree._steps
]
merkleHashesRskSubmit.insert(0, coinbaseHashHexRskSubmit)
merkleHashesRskSubmit = ' '.join(merkleHashesRskSubmit)
txnCountRskSubmit = hex(len(txlist))[2:]
threading.Thread(target=rootstockSubmissionThread,
args=(blockhashHexRskSubmit,
blockheaderHexRskSubmit,
coinbaseHexRskSubmit, merkleHashesRskSubmit,
txnCountRskSubmit, share)).start()
if not submitBitcoin:
return
logfunc('Real block payload: %s' % (b2a_hex(payload).decode('utf8'), ))
RBPs.append(payload)
threading.Thread(target=blockSubmissionThread,
args=(payload, blkhash, share)).start()
bcnode.submitBlock(payload)
if config.DelayLogForUpstream:
share['upstreamRejectReason'] = PendingUpstream
else:
share['upstreamRejectReason'] = None
share['upstreamResult'] = True
MM.updateBlock(blkhash)
# Gotwork hack...
if gotwork and blkhashn <= config.GotWorkTarget:
try:
coinbaseMrkl = cbtxn.data
coinbaseMrkl += blkhash
steps = workMerkleTree._steps
coinbaseMrkl += pack('B', len(steps))
for step in steps:
coinbaseMrkl += step
coinbaseMrkl += b"\0\0\0\0"
info = {}
info['hash'] = b2a_hex(blkhash).decode('ascii')
info['header'] = b2a_hex(data).decode('ascii')
info['coinbaseMrkl'] = b2a_hex(coinbaseMrkl).decode('ascii')
thr = threading.Thread(target=submitGotwork, args=(info, ))
thr.daemon = True
thr.start()
except:
checkShare.logger.warning('Failed to build gotwork request')
if 'target' in share:
workTarget = share['target']
elif len(wld) > 6:
workTarget = wld[6]
else:
workTarget = None
if workTarget is None:
workTarget = config.ShareTarget
if blkhashn > workTarget:
raise RejectedShare('high-hash')
share['target'] = workTarget
share['_targethex'] = '%064x' % (workTarget, )
shareTimestamp = unpack('<L', data[68:72])[0]
if shareTime < issueT - config.StaleWorkTimeout:
raise RejectedShare('stale-work')
if shareTimestamp < shareTime - 300:
raise RejectedShare('time-too-old')
if shareTimestamp > shareTime + 7200:
raise RejectedShare('time-too-new')
if moden:
cbpre = workCoinbase
cbpreLen = len(cbpre)
if coinbase[:cbpreLen] != cbpre:
raise RejectedShare('bad-cb-prefix')
# Filter out known "I support" flags, to prevent exploits
for ff in (b'/P2SH/', b'NOP2SH', b'p2sh/CHV', b'p2sh/NOCHV'):
if coinbase.find(ff) > max(-1, cbpreLen - len(ff)):
raise RejectedShare('bad-cb-flag')
if len(coinbase) > 100:
raise RejectedShare('bad-cb-length')
if shareMerkleRoot != workMerkleTree.withFirst(cbtxn):
raise RejectedShare('bad-txnmrklroot')
if len(othertxndata):
allowed = assembleBlock(data, txlist)[80:]
if allowed != share['blkdata']:
raise RejectedShare('bad-txns')
if config.DynamicTargetting and username in userStatus:
# NOTE: userStatus[username] only doesn't exist across restarts
status = userStatus[username]
target = status[0] or config.ShareTarget
if target == workTarget:
userStatus[username][2] += 1
else:
userStatus[username][2] += float(target) / workTarget
if checkQuickDiffAdjustment and userStatus[username][
2] > config.DynamicTargetGoal * 2:
stratumsrv.quickDifficultyUpdate(username)
def withash(self): self.witness_hash = dblsha(self.data)
def checkShare(share):
shareTime = share['time'] = time()
username = share['username']
if 'data' in share:
# getwork/GBT
checkData(share)
data = share['data']
if username not in workLog:
raise RejectedShare('unknown-user')
MWL = workLog[username]
shareMerkleRoot = data[36:68]
if 'blkdata' in share:
pl = share['blkdata']
(txncount, pl) = varlenDecode(pl)
cbtxn = bitcoin.txn.Txn(pl)
othertxndata = cbtxn.disassemble(retExtra=True)
coinbase = cbtxn.getCoinbase()
wliPos = coinbase[0] + 2
wliLen = coinbase[wliPos - 1]
wli = coinbase[wliPos:wliPos + wliLen]
mode = 'MC'
moden = 1
else:
wli = shareMerkleRoot
mode = 'MRD'
moden = 0
coinbase = None
else:
# Stratum
MWL = workLog[None]
wli = share['jobid']
buildStratumData(share, b'\0' * 32)
mode = 'MC'
moden = 1
othertxndata = b''
if wli not in MWL:
raise RejectedShare('unknown-work')
(wld, issueT) = MWL[wli]
share[mode] = wld
share['issuetime'] = issueT
(workMerkleTree, workCoinbase) = wld[1:3]
share['merkletree'] = workMerkleTree
if 'jobid' in share:
cbtxn = deepcopy(workMerkleTree.data[0])
coinbase = workCoinbase + share['extranonce1'] + share['extranonce2']
cbtxn.setCoinbase(coinbase)
cbtxn.assemble()
data = buildStratumData(share, workMerkleTree.withFirst(cbtxn))
shareMerkleRoot = data[36:68]
if data in DupeShareHACK:
raise RejectedShare('duplicate')
DupeShareHACK[data] = None
blkhash = dblsha(data)
if blkhash[28:] != b'\0\0\0\0':
raise RejectedShare('H-not-zero')
blkhashn = LEhash2int(blkhash)
global networkTarget
logfunc = getattr(checkShare.logger,
'info' if blkhashn <= networkTarget else 'debug')
logfunc('BLKHASH: %64x' % (blkhashn, ))
logfunc(' TARGET: %64x' % (networkTarget, ))
# NOTE: this isn't actually needed for MC mode, but we're abusing it for a trivial share check...
txlist = workMerkleTree.data
txlist = [
deepcopy(txlist[0]),
] + txlist[1:]
cbtxn = txlist[0]
cbtxn.setCoinbase(coinbase or workCoinbase)
cbtxn.assemble()
if blkhashn <= networkTarget:
logfunc("Submitting upstream")
RBDs.append(
deepcopy(
(data, txlist, share.get('blkdata',
None), workMerkleTree, share, wld)))
if not moden:
payload = assembleBlock(data, txlist)
else:
payload = share['data']
if len(othertxndata):
payload += share['blkdata']
else:
payload += assembleBlock(data, txlist)[80:]
logfunc('Real block payload: %s' % (b2a_hex(payload).decode('utf8'), ))
RBPs.append(payload)
threading.Thread(target=blockSubmissionThread,
args=(payload, blkhash, share)).start()
bcnode.submitBlock(payload)
if config.DelayLogForUpstream:
share['upstreamRejectReason'] = PendingUpstream
else:
share['upstreamRejectReason'] = None
share['upstreamResult'] = True
MM.updateBlock(blkhash)
# Gotwork hack...
if gotwork and blkhashn <= config.GotWorkTarget:
try:
coinbaseMrkl = cbtxn.data
coinbaseMrkl += blkhash
steps = workMerkleTree._steps
coinbaseMrkl += pack('B', len(steps))
for step in steps:
coinbaseMrkl += step
coinbaseMrkl += b"\0\0\0\0"
info = {}
info['hash'] = b2a_hex(blkhash).decode('ascii')
info['header'] = b2a_hex(data).decode('ascii')
info['coinbaseMrkl'] = b2a_hex(coinbaseMrkl).decode('ascii')
thr = threading.Thread(target=submitGotwork, args=(info, ))
thr.daemon = True
thr.start()
except:
checkShare.logger.warning('Failed to build gotwork request')
if 'target' in share:
workTarget = share['target']
elif len(wld) > 6:
workTarget = wld[6]
else:
workTarget = None
if workTarget is None:
workTarget = config.ShareTarget
if blkhashn > workTarget:
raise RejectedShare('high-hash')
share['target'] = workTarget
share['_targethex'] = '%064x' % (workTarget, )
shareTimestamp = unpack('<L', data[68:72])[0]
if shareTime < issueT - 120:
raise RejectedShare('stale-work')
if shareTimestamp < shareTime - 300:
raise RejectedShare('time-too-old')
if shareTimestamp > shareTime + 7200:
raise RejectedShare('time-too-new')
if config.DynamicTargetting and username in userStatus:
# NOTE: userStatus[username] only doesn't exist across restarts
status = userStatus[username]
target = status[0] or config.ShareTarget
if target == workTarget:
userStatus[username][2] += 1
else:
userStatus[username][2] += float(target) / workTarget
if moden:
cbpre = workCoinbase
cbpreLen = len(cbpre)
if coinbase[:cbpreLen] != cbpre:
raise RejectedShare('bad-cb-prefix')
# Filter out known "I support" flags, to prevent exploits
for ff in (b'/P2SH/', b'NOP2SH', b'p2sh/CHV', b'p2sh/NOCHV'):
if coinbase.find(ff) > max(-1, cbpreLen - len(ff)):
raise RejectedShare('bad-cb-flag')
if len(coinbase) > 100:
raise RejectedShare('bad-cb-length')
if shareMerkleRoot != workMerkleTree.withFirst(cbtxn):
raise RejectedShare('bad-txnmrklroot')
if len(othertxndata):
allowed = assembleBlock(data, txlist)[80:]
if allowed != share['blkdata']:
raise RejectedShare('bad-txns')
def checkShare(share):
shareTime = share['time'] = time()
username = share['username']
if 'data' in share:
# getwork/GBT
checkData(share)
data = share['data']
if username not in workLog:
raise RejectedShare('unknown-user')
MWL = workLog[username]
shareMerkleRoot = data[36:68]
if 'blkdata' in share:
pl = share['blkdata']
(txncount, pl) = varlenDecode(pl)
cbtxn = bitcoin.txn.Txn(pl)
othertxndata = cbtxn.disassemble(retExtra=True)
coinbase = cbtxn.getCoinbase()
wliPos = coinbase[0] + 2
wliLen = coinbase[wliPos - 1]
wli = coinbase[wliPos:wliPos+wliLen]
mode = 'MC'
moden = 1
else:
wli = shareMerkleRoot
mode = 'MRD'
moden = 0
coinbase = None
else:
# Stratum
MWL = workLog[None]
wli = share['jobid']
buildStratumData(share, b'\0' * 32)
mode = 'MC'
moden = 1
othertxndata = b''
if wli not in MWL:
raise RejectedShare('unknown-work')
(wld, issueT) = MWL[wli]
share[mode] = wld
share['issuetime'] = issueT
(workMerkleTree, workCoinbase) = wld[1:3]
share['merkletree'] = workMerkleTree
if 'jobid' in share:
cbtxn = deepcopy(workMerkleTree.data[0])
coinbase = workCoinbase + share['extranonce1'] + share['extranonce2']
cbtxn.setCoinbase(coinbase)
cbtxn.assemble()
data = buildStratumData(share, workMerkleTree.withFirst(cbtxn))
shareMerkleRoot = data[36:68]
if data in DupeShareHACK:
raise RejectedShare('duplicate')
DupeShareHACK[data] = None
blkhash = dblsha(data)
if blkhash[28:] != b'\0\0\0\0':
raise RejectedShare('H-not-zero')
blkhashn = LEhash2int(blkhash)
global networkTarget
logfunc = getattr(checkShare.logger, 'info' if blkhashn <= networkTarget else 'debug')
logfunc('BLKHASH: %64x' % (blkhashn,))
logfunc(' TARGET: %64x' % (networkTarget,))
# NOTE: this isn't actually needed for MC mode, but we're abusing it for a trivial share check...
txlist = workMerkleTree.data
txlist = [deepcopy(txlist[0]),] + txlist[1:]
cbtxn = txlist[0]
cbtxn.setCoinbase(coinbase or workCoinbase)
cbtxn.assemble()
if blkhashn <= networkTarget:
logfunc("Submitting upstream")
RBDs.append( deepcopy( (data, txlist, share.get('blkdata', None), workMerkleTree, share, wld) ) )
if not moden:
payload = assembleBlock(data, txlist)
else:
payload = share['data']
if len(othertxndata):
payload += share['blkdata']
else:
payload += assembleBlock(data, txlist)[80:]
logfunc('Real block payload: %s' % (b2a_hex(payload).decode('utf8'),))
RBPs.append(payload)
threading.Thread(target=blockSubmissionThread, args=(payload, blkhash, share)).start()
bcnode.submitBlock(payload)
if config.DelayLogForUpstream:
share['upstreamRejectReason'] = PendingUpstream
else:
share['upstreamRejectReason'] = None
share['upstreamResult'] = True
MM.updateBlock(blkhash)
# Gotwork hack...
if gotwork and blkhashn <= config.GotWorkTarget:
try:
coinbaseMrkl = cbtxn.data
coinbaseMrkl += blkhash
steps = workMerkleTree._steps
coinbaseMrkl += pack('B', len(steps))
for step in steps:
coinbaseMrkl += step
coinbaseMrkl += b"\0\0\0\0"
info = {}
info['hash'] = b2a_hex(blkhash).decode('ascii')
info['header'] = b2a_hex(data).decode('ascii')
info['coinbaseMrkl'] = b2a_hex(coinbaseMrkl).decode('ascii')
thr = threading.Thread(target=submitGotwork, args=(info,))
thr.daemon = True
thr.start()
except:
checkShare.logger.warning('Failed to build gotwork request')
if 'target' in share:
workTarget = share['target']
elif len(wld) > 6:
workTarget = wld[6]
else:
workTarget = None
if workTarget is None:
workTarget = config.ShareTarget
if blkhashn > workTarget:
raise RejectedShare('high-hash')
share['target'] = workTarget
share['_targethex'] = '%064x' % (workTarget,)
shareTimestamp = unpack('<L', data[68:72])[0]
if shareTime < issueT - 120:
raise RejectedShare('stale-work')
if shareTimestamp < shareTime - 300:
raise RejectedShare('time-too-old')
if shareTimestamp > shareTime + 7200:
raise RejectedShare('time-too-new')
if config.DynamicTargetting and username in userStatus:
# NOTE: userStatus[username] only doesn't exist across restarts
status = userStatus[username]
target = status[0] or config.ShareTarget
if target == workTarget:
userStatus[username][2] += 1
else:
userStatus[username][2] += float(target) / workTarget
if moden:
cbpre = workCoinbase
cbpreLen = len(cbpre)
if coinbase[:cbpreLen] != cbpre:
raise RejectedShare('bad-cb-prefix')
# Filter out known "I support" flags, to prevent exploits
for ff in (b'/P2SH/', b'NOP2SH', b'p2sh/CHV', b'p2sh/NOCHV'):
if coinbase.find(ff) > max(-1, cbpreLen - len(ff)):
raise RejectedShare('bad-cb-flag')
if len(coinbase) > 100:
raise RejectedShare('bad-cb-length')
if shareMerkleRoot != workMerkleTree.withFirst(cbtxn):
raise RejectedShare('bad-txnmrklroot')
if len(othertxndata):
allowed = assembleBlock(data, txlist)[80:]
if allowed != share['blkdata']:
raise RejectedShare('bad-txns')
def withash(self):
self.witness_hash = dblsha(self.data)
def idhash(self):
self.txid = dblsha(self.data)
