def algo_verify(block_hex, hash_function):
block_bytes = unhexlify(block_hex)
hash_func = import_helper(hash_function)
block_hash = hash_func(block_bytes)
block_hash_int = uint256_from_str(block_hash)
bits = block_bytes[72:76][::-1]
target = target_unpack(bits)
print("Unpacked target of {}".format(hexlify(uint256_to_str(target))))
print("Block hash is {}".format(hexlify(block_hash)))
print("Block hash is valid? {}".format(block_hash_int <= target))
def algo_verify(block_hex, hash_function):
block_bytes = unhexlify(block_hex)
hash_func = import_helper(hash_function)
block_hash = hash_func(block_bytes)
block_hash_int = uint256_from_str(block_hash)
bits = block_bytes[72:76][::-1]
target = target_unpack(bits)
print("Unpacked target of {}".format(hexlify(uint256_to_str(target))))
print("Block hash is {}".format(hexlify(block_hash)))
print("Block hash is valid? {}".format(block_hash_int <= target))
def test_stratum_confirm(self):
""" Test some raw data from cgminer submitting a share, confirm
hashes come out the same as cgminer.
Raw stratum params:
"""
gbt = {u'bits': u'1e00e92b',
u'coinbaseaux': {u'flags': u'062f503253482f'},
u'coinbasevalue': 5000000000,
u'curtime': 1392509565,
u'height': 203588,
u'mintime': 1392508633,
u'mutable': [u'time', u'transactions', u'prevblock'],
u'noncerange': u'00000000ffffffff',
u'previousblockhash': u'b0f5ecb62774f2f07fdc0f72fa0585ae3e8ca78ad8692209a355d12bc690fb73',
u'sigoplimit': 20000,
u'sizelimit': 1000000,
u'target': u'000000e92b000000000000000000000000000000000000000000000000000000',
u'transactions': [],
u'version': 2}
extra1 = '0000000000000000'
submit = {'extra2': '00000000', 'nonce': 'd5160000',
'result': '000050ccfe8a3efe93b2ee33d2aecf4a60c809995c7dd19368a7d00c86880f30'}
# build a block template object from the raw data
coinbase = Transaction()
coinbase.version = 2
coinbase.inputs.append(Input.coinbase(gbt['height'], b'\0' * 12))
coinbase.outputs.append(Output.to_address(gbt['coinbasevalue'], 'D7QJyeBNuwEqxsyVCLJi3pHs64uPdMDuBa'))
transactions = []
for trans in gbt['transactions']:
new_trans = Transaction(unhexlify(trans['data']), fees=trans['fee'])
assert trans['hash'] == new_trans.lehexhash
transactions.append(new_trans)
bt = BlockTemplate.from_gbt(gbt, coinbase, 12, transactions)
send_params = bt.stratum_params()
print("job_id: {0}\nprevhash: {1}\ncoinbase1: {2}\ncoinbase2: {3}"
"\nmerkle_branch: {4}\nversion: {5}\nnbits: {6}\nntime: {7}"
.format(*send_params))
header = bt.block_header(submit['nonce'], extra1, submit['extra2'])
hash_bin = scrypt(header)
target = target_from_diff(1, 0x0000FFFF00000000000000000000000000000000000000000000000000000000)
hash_int = uint256_from_str(hash_bin)
hash_hex = "%064x" % hash_int
self.assertEquals(hash_hex, submit['result'])
assert hash_int < target
def submit_job(self, data, t):
""" Handles recieving work submission and checking that it is valid
, if it meets network diff, etc. Sends reply to stratum client. """
params = data['params']
# [worker_name, job_id, extranonce2, ntime, nonce]
# ["slush.miner1", "bf", "00000001", "504e86ed", "b2957c02"]
if __debug__:
self.logger.debug(
"Recieved work submit:\n\tworker_name: {0}\n\t"
"job_id: {1}\n\textranonce2: {2}\n\t"
"ntime: {3}\n\tnonce: {4} ({int_nonce})"
.format(
*params,
int_nonce=struct.unpack(str("<L"), unhexlify(params[4]))))
if self.idle:
self.idle = False
self.server.idle_clients -= 1
self.last_share_submit = time.time()
try:
difficulty, job = self.job_mapper[data['params'][1]]
job = job() # weakref will be none if it's been GCed
except KeyError:
try:
difficulty, job = self.old_job_mapper[data['params'][1]]
job = job() # weakref will be none if it's been GCed
except KeyError:
job = None # Job not in jobmapper at all, we got a bogus submit
# since we can't identify the diff we just have to assume it's
# current diff
difficulty = self.difficulty
if job is None:
self.send_error(self.STALE_SHARE_ERR, id_val=data['id'])
self.reporter.log_share(client=self,
diff=self.difficulty,
typ=self.STALE_SHARE,
params=params,
start=t)
return difficulty, self.STALE_SHARE
# assemble a complete block header bytestring
header = job.block_header(
nonce=params[4],
extra1=self._id,
extra2=params[2],
ntime=params[3])
# Check a submitted share against previous shares to eliminate
# duplicates
share = (self._id, params[2], params[4], params[3])
if share in job.acc_shares:
self.logger.info("Duplicate share rejected from worker {}.{}!"
.format(self.address, self.worker))
self.send_error(self.DUP_SHARE_ERR, id_val=data['id'])
self.reporter.log_share(client=self,
diff=difficulty,
typ=self.DUP_SHARE,
params=params,
job=job,
start=t)
return difficulty, self.DUP_SHARE
job_target = target_from_diff(difficulty, job.diff1)
hash_int = uint256_from_str(self.algo['module'](header))
if hash_int >= job_target:
self.logger.info("Low diff share rejected from worker {}.{}!"
.format(self.address, self.worker))
self.send_error(self.LOW_DIFF_ERR, id_val=data['id'])
self.reporter.log_share(client=self,
diff=difficulty,
typ=self.LOW_DIFF_SHARE,
params=params,
job=job,
start=t)
return difficulty, self.LOW_DIFF_SHARE
# we want to send an ack ASAP, so do it here
self.send_success(id_val=data['id'])
# Add the share to the accepted set to check for dups
job.acc_shares.add(share)
self.accepted_shares += difficulty
self.reporter.log_share(client=self,
diff=difficulty,
typ=self.VALID_SHARE,
params=params,
job=job,
header_hash=hash_int,
header=header,
start=t)
return difficulty, self.VALID_SHARE
def submit_job(self, data):
""" Handles recieving work submission and checking that it is valid
, if it meets network diff, etc. Sends reply to stratum client. """
start = time.time()
params = data['params']
# [worker_name, job_id, extranonce2, ntime, nonce]
# ["slush.miner1", "bf", "00000001", "504e86ed", "b2957c02"]
if __debug__:
self.logger.debug(
"Recieved work submit:\n\tworker_name: {0}\n\t"
"job_id: {1}\n\textranonce2: {2}\n\t"
"ntime: {3}\n\tnonce: {4} ({int_nonce})"
.format(
*params,
int_nonce=struct.unpack(str("<L"), unhexlify(params[4]))))
if self.idle:
self.idle = False
self.stratum_manager.idle_clients -= 1
self.last_share_submit = time.time()
try:
difficulty, jobid = self.job_mapper[data['params'][1]]
except KeyError:
# since we can't identify the diff we just have to assume it's
# current diff
self.send_error(self.STALE_SHARE_ERR, id_val=self.msg_id)
self.server['reject_stale'].incr(self.difficulty)
self.server['reject_stale_shares'].incr()
return self.STALE_SHARE, self.difficulty
# lookup the job in the global job dictionary. If it's gone from here
# then a new block was announced which wiped it
try:
job = self.jobmanager.jobs[jobid]
except KeyError:
self.send_error(self.STALE_SHARE_ERR, id_val=self.msg_id)
self.server['reject_stale'].incr(difficulty)
self.server['reject_stale_shares'].incr()
return self.STALE_SHARE, difficulty
# assemble a complete block header bytestring
header = job.block_header(
nonce=params[4],
extra1=self.id,
extra2=params[2],
ntime=params[3])
# Grab the raw coinbase out of the job object before gevent can preempt
# to another thread and change the value. Very important!
coinbase_raw = job.coinbase.raw
# Check a submitted share against previous shares to eliminate
# duplicates
share = (self.id, params[2], params[4], params[3])
if share in job.acc_shares:
self.logger.info("Duplicate share rejected from worker {}.{}!"
.format(self.address, self.worker))
self.send_error(self.DUP_SHARE_ERR, id_val=self.msg_id)
self.server['reject_dup'].incr(difficulty)
self.server['reject_dup_shares'].incr()
return self.DUP_SHARE, difficulty
job_target = target_from_diff(difficulty, job.diff1)
hash_int = uint256_from_str(self.algos[job.algo](header))
if hash_int >= job_target:
self.logger.info("Low diff share rejected from worker {}.{}!"
.format(self.address, self.worker))
self.send_error(self.LOW_DIFF_ERR, id_val=self.msg_id)
self.server['reject_low'].incr(difficulty)
self.server['reject_low_shares'].incr()
return self.LOW_DIFF, difficulty
# we want to send an ack ASAP, so do it here
self.send_success(id_val=self.msg_id)
self.logger.debug("Valid share accepted from worker {}.{}!"
.format(self.address, self.worker))
# Add the share to the accepted set to check for dups
job.acc_shares.add(share)
self.server['valid'].incr(difficulty)
self.server['valid_shares'].incr()
# Some coins use POW function to do blockhash, while others use SHA256.
# Allow toggling
if job.pow_block_hash:
header_hash = self.algos[job.algo](header)[::-1]
else:
header_hash = sha256(sha256(header).digest()).digest()[::-1]
hash_hex = hexlify(header_hash)
# valid network hash?
if hash_int <= job.bits_target:
spawn(self.jobmanager.found_block,
coinbase_raw,
self.address,
self.worker,
hash_hex,
header,
job.job_id,
start)
outcome = self.BLOCK_FOUND
else:
outcome = self.VALID_SHARE
# check each aux chain for validity
for chain_id, data in job.merged_data.iteritems():
if hash_int <= data['target']:
spawn(self.jobmanager.found_merged_block,
self.address,
self.worker,
header,
job.job_id,
coinbase_raw,
data['type'])
return outcome, difficulty
def submit_job(self, data, t):
""" Handles recieving work submission and checking that it is valid
, if it meets network diff, etc. Sends reply to stratum client. """
params = data['params']
# [worker_name, job_id, extranonce2, ntime, nonce]
# ["slush.miner1", "bf", "00000001", "504e86ed", "b2957c02"]
if __debug__:
self.logger.debug("Recieved work submit:\n\tworker_name: {0}\n\t"
"job_id: {1}\n\textranonce2: {2}\n\t"
"ntime: {3}\n\tnonce: {4} ({int_nonce})".format(
*params,
int_nonce=struct.unpack(
str("<L"), unhexlify(params[4]))))
if self.idle:
self.idle = False
self.server.idle_clients -= 1
self.last_share_submit = time.time()
try:
difficulty, job = self.job_mapper[data['params'][1]]
job = job() # weakref will be None if the job has been GCed
except KeyError:
try:
difficulty, job = self.old_job_mapper[data['params'][1]]
job = job() # weakref will be None if the job has been GCed
except KeyError:
job = None # Job not in jobmapper at all, we got a bogus submit
# since we can't identify the diff we just have to assume it's
# current diff
difficulty = self.difficulty
if job not in self.server.active_jobs:
self.send_error(self.STALE_SHARE_ERR, id_val=data['id'])
self.counter['stale'] += 1
self.reporter.log_share(client=self,
diff=self.difficulty,
typ=self.STALE_SHARE,
params=params,
job=job,
start=t)
return difficulty, self.STALE_SHARE
# assemble a complete block header bytestring
header = job.block_header(nonce=params[4],
extra1=self._id,
extra2=params[2],
ntime=params[3])
# Check a submitted share against previous shares to eliminate
# duplicates
share_lower = (self._id.lower(), params[2].lower(), params[4].lower(),
params[3].lower())
if share_lower in job.acc_shares:
self.logger.info(
"Duplicate share rejected from worker {}.{}!".format(
self.address, self.worker))
self.send_error(self.DUP_SHARE_ERR, id_val=data['id'])
self.counter['duplicate'] += 1
self.reporter.log_share(client=self,
diff=difficulty,
typ=self.DUP_SHARE,
params=params,
job=job,
start=t)
return difficulty, self.DUP_SHARE
job_target = target_from_diff(difficulty, job.diff1)
hash_int = uint256_from_str(self.algo['module'](header))
if hash_int >= job_target:
self.logger.info(
"Low diff share rejected from worker {}.{}!".format(
self.address, self.worker))
self.send_error(self.LOW_DIFF_ERR, id_val=data['id'])
self.counter['LowDiff'] += 1
self.reporter.log_share(client=self,
diff=difficulty,
typ=self.LOW_DIFF_SHARE,
params=params,
job=job,
start=t)
return difficulty, self.LOW_DIFF_SHARE
# we want to send an ack ASAP, so do it here
self.send_success(id_val=data['id'])
# Add the share to the accepted set to check for dups
job.acc_shares.add(share_lower)
self.counter['accepted'] += 1
multi = float(
job.diff1
) / 0x00000000FFFF0000000000000000000000000000000000000000000000000000
self.accepted_shares += difficulty / multi
self.server.jobmanager.current_accepted_shares += difficulty / multi
self.reporter.log_share(client=self,
diff=difficulty,
typ=self.VALID_SHARE,
params=params,
job=job,
header_hash=hash_int,
header=header,
start=t)
return difficulty, self.VALID_SHARE
def test_stratum_confirm(self):
""" Test some raw data from cgminer submitting a share, confirm
hashes come out the same as cgminer.
Raw stratum params:
"""
gbt = {
u'bits': u'1e00e92b',
u'coinbaseaux': {
u'flags': u'062f503253482f'
},
u'coinbasevalue': 5000000000,
u'curtime': 1392509565,
u'height': 203588,
u'mintime': 1392508633,
u'mutable': [u'time', u'transactions', u'prevblock'],
u'noncerange': u'00000000ffffffff',
u'previousblockhash':
u'b0f5ecb62774f2f07fdc0f72fa0585ae3e8ca78ad8692209a355d12bc690fb73',
u'sigoplimit': 20000,
u'sizelimit': 1000000,
u'target':
u'000000e92b000000000000000000000000000000000000000000000000000000',
u'transactions': [],
u'version': 2
}
extra1 = '0000000000000000'
submit = {
'extra2':
'00000000',
'nonce':
'd5160000',
'result':
'000050ccfe8a3efe93b2ee33d2aecf4a60c809995c7dd19368a7d00c86880f30'
}
# build a block template object from the raw data
coinbase = Transaction()
coinbase.version = 2
coinbase.inputs.append(Input.coinbase(gbt['height'], b'\0' * 12))
coinbase.outputs.append(
Output.to_address(gbt['coinbasevalue'],
'D7QJyeBNuwEqxsyVCLJi3pHs64uPdMDuBa'))
transactions = []
for trans in gbt['transactions']:
new_trans = Transaction(unhexlify(trans['data']),
fees=trans['fee'])
assert trans['hash'] == new_trans.lehexhash
transactions.append(new_trans)
bt = BlockTemplate.from_gbt(gbt, coinbase, 12, transactions)
send_params = bt.stratum_params()
print("job_id: {0}\nprevhash: {1}\ncoinbase1: {2}\ncoinbase2: {3}"
"\nmerkle_branch: {4}\nversion: {5}\nnbits: {6}\nntime: {7}".
format(*send_params))
header = bt.block_header(submit['nonce'], extra1, submit['extra2'])
hash_bin = scrypt(header)
target = target_from_diff(
1,
0x0000FFFF00000000000000000000000000000000000000000000000000000000)
hash_int = uint256_from_str(hash_bin)
hash_hex = "%064x" % hash_int
self.assertEquals(hash_hex, submit['result'])
assert hash_int < target
def submit_job(self, data):
""" Handles recieving work submission and checking that it is valid
, if it meets network diff, etc. Sends reply to stratum client. """
start = time.time()
params = data['params']
# [worker_name, job_id, extranonce2, ntime, nonce]
# ["slush.miner1", "bf", "00000001", "504e86ed", "b2957c02"]
if __debug__:
self.logger.debug("Recieved work submit:\n\tworker_name: {0}\n\t"
"job_id: {1}\n\textranonce2: {2}\n\t"
"ntime: {3}\n\tnonce: {4} ({int_nonce})".format(
*params,
int_nonce=struct.unpack(
str("<L"), unhexlify(params[4]))))
if self.idle:
self.idle = False
self.stratum_manager.idle_clients -= 1
self.last_share_submit = time.time()
try:
difficulty, jobid = self.job_mapper[data['params'][1]]
except KeyError:
# since we can't identify the diff we just have to assume it's
# current diff
self.send_error(self.STALE_SHARE_ERR, id_val=self.msg_id)
self.server['reject_stale'].incr(self.difficulty)
self.server['reject_stale_shares'].incr()
return self.STALE_SHARE, self.difficulty
# lookup the job in the global job dictionary. If it's gone from here
# then a new block was announced which wiped it
try:
job = self.jobmanager.jobs[jobid]
except KeyError:
self.send_error(self.STALE_SHARE_ERR, id_val=self.msg_id)
self.server['reject_stale'].incr(difficulty)
self.server['reject_stale_shares'].incr()
return self.STALE_SHARE, difficulty
# assemble a complete block header bytestring
header = job.block_header(nonce=params[4],
extra1=self.id,
extra2=params[2],
ntime=params[3])
# Grab the raw coinbase out of the job object before gevent can preempt
# to another thread and change the value. Very important!
coinbase_raw = job.coinbase.raw
# Check a submitted share against previous shares to eliminate
# duplicates
share = (self.id, params[2], params[4], params[3])
if share in job.acc_shares:
self.logger.info(
"Duplicate share rejected from worker {}.{}!".format(
self.address, self.worker))
self.send_error(self.DUP_SHARE_ERR, id_val=self.msg_id)
self.server['reject_dup'].incr(difficulty)
self.server['reject_dup_shares'].incr()
return self.DUP_SHARE, difficulty
job_target = target_from_diff(difficulty, job.diff1)
hash_int = uint256_from_str(self.algos[job.algo](header))
if hash_int >= job_target:
self.logger.info(
"Low diff share rejected from worker {}.{}!".format(
self.address, self.worker))
self.send_error(self.LOW_DIFF_ERR, id_val=self.msg_id)
self.server['reject_low'].incr(difficulty)
self.server['reject_low_shares'].incr()
return self.LOW_DIFF, difficulty
# we want to send an ack ASAP, so do it here
self.send_success(id_val=self.msg_id)
self.logger.debug("Valid share accepted from worker {}.{}!".format(
self.address, self.worker))
# Add the share to the accepted set to check for dups
job.acc_shares.add(share)
self.server['valid'].incr(difficulty)
self.server['valid_shares'].incr()
# Some coins use POW function to do blockhash, while others use SHA256.
# Allow toggling
if job.pow_block_hash:
header_hash = self.algos[job.algo](header)[::-1]
else:
header_hash = sha256(sha256(header).digest()).digest()[::-1]
hash_hex = hexlify(header_hash)
# valid network hash?
if hash_int <= job.bits_target:
spawn(self.jobmanager.found_block, coinbase_raw, self.address,
self.worker, hash_hex, header, job.job_id, start)
outcome = self.BLOCK_FOUND
else:
outcome = self.VALID_SHARE
# check each aux chain for validity
for chain_id, data in job.merged_data.iteritems():
if hash_int <= data['target']:
spawn(self.jobmanager.found_merged_block, self.address,
self.worker, header, job.job_id, coinbase_raw,
data['type'])
return outcome, difficulty