def add_block(block_pair, recent_hashes, DB={}):
"""Attempts adding a new block to the blockchain.
Median is good for weeding out liars, so long as the liars don't have 51%
hashpower. """
def median(mylist):
if len(mylist) < 1:
return 0
return sorted(mylist)[len(mylist) / 2]
def block_check(block, DB):
def log_(txt):
pass #return tools.log(txt)
def tx_check(txs):
start = copy.deepcopy(txs)
out = []
start_copy = []
invalid_because = ['']
while start != start_copy:
if start == []:
return False # Block passes this test
start_copy = copy.deepcopy(start)
if transactions.tx_check[start[0]['type']](start[0], out,
invalid_because,
DB):
out.append(start.pop())
else:
tools.log('invalid tx: ' + str(invalid_because[0]))
return True # Block is invalid
tools.log('block invalid because it has no txs')
return True # Block is invalid
if 'error' in block:
log_('error in block')
return False
length = tools.local_get('length')
if type(block['length']) != type(1):
log_('wrong length type')
return False
if int(block['length']) != int(length) + 1:
log_('wrong longth')
return False
block_creator_address = tools.addr(block)
mint_address = tools.addr(
filter(lambda t: t['type'] == 'mint', block['txs'])[0])
if block_creator_address != mint_address:
log_('bad mint')
return False
if block['root_hash'] != tools.db_root():
log_('bad root, have: ' + str(tools.db_root()) + ' need ' +
str(block['root_hash']))
return False
txs = filter(lambda x: x['type'] == 'mint', block['txs'])
if len(txs) != 1:
log_('wrong number of mint txs')
return False
txs = filter(lambda x: x['type'] == 'sign', block['txs'])
txs = map(lambda x: len(x['jackpots']), txs)
if sum(txs) < custom.signers * 2 / 3 and length > -1:
log_('not enough signatures')
return False
if length >= 0:
prev_block = tools.db_get(length)
to_hash = {
'prev_hash': prev_block['block_hash'],
'txs': block['txs']
}
if not block['block_hash'] == tools.det_hash(to_hash):
log_('det hash error')
return False
#total money spent must be less than the total amount of money in signed deposits for this block.
if tx_check(block['txs']):
log_('tx check')
return False
return True
if type(block_pair) == type([1, 2, 3]):
block = block_pair[0]
peer = block_pair[1]
else:
block = block_pair
peer = False
if 'block_hash' in block and block['block_hash'] in recent_hashes:
#tools.log('we already have that block:' +str(block))
return 0
#tools.log('attempt to add block: ' +str(block))
if block_check(block, DB):
#tools.log('add_block: ' + str(block))
tools.db_put(block['length'], block, DB)
tools.local_put('height', block['height'])
#take money from the creator
tools.local_put('length', block['length'])
orphans = tools.local_get('txs')
orphans = filter(lambda t: t['type'] != 'mint', orphans)
tools.local_put('txs', [])
for tx in block['txs']:
try:
transactions.update[tx['type']](tx, DB, True)
except Exception as exc:
tools.log(
'blockchain broke while adding block. Current datafiles are probably corrupted, and should be deleted.'
)
tools.log(exc)
error()
for tx in orphans:
add_tx(tx, DB)
peers = tools.local_get('peers')
if peer != False and peers[peer]['blacklist'] > 0:
peers[peer]['blacklist'] -= 1
tools.local_put(
'peers', peers
) #root hash written on the block is for the state before that block
tools.local_put('balance_proofs' + str(block['length']),
tools.db_proof(tools.local_get('address')))
return
elif not peer == False:
peers = tools.local_get('peers')
if peer not in peers:
peers[peer] = tools.empty_peer()
peers[peer]['blacklist'] += 1
def add_block(block_pair, recent_hashes, DB={}):
"""Attempts adding a new block to the blockchain.
Median is good for weeding out liars, so long as the liars don't have 51%
hashpower. """
def median(mylist):
if len(mylist) < 1:
return 0
return sorted(mylist)[len(mylist) / 2]
def block_check(block, DB):
def log_(txt): pass #return tools.log(txt)
def tx_check(txs):
start = copy.deepcopy(txs)
out = []
start_copy = []
invalid_because = ['']
while start != start_copy:
if start == []:
return False # Block passes this test
start_copy = copy.deepcopy(start)
if transactions.tx_check[start[0]['type']](start[0], out, invalid_because, DB):
out.append(start.pop())
else:
tools.log('invalid tx: '+str(invalid_because[0]))
return True # Block is invalid
tools.log('block invalid because it has no txs')
return True # Block is invalid
if 'error' in block:
log_('error in block')
return False
length =tools.local_get('length')
if type(block['length'])!=type(1):
log_('wrong length type')
return False
if int(block['length']) != int(length) + 1:
log_('wrong longth')
return False
block_creator_address=tools.addr(block)
mint_address=tools.addr(filter(lambda t: t['type']=='mint', block['txs'])[0])
if block_creator_address!=mint_address:
log_('bad mint')
return False
if block['root_hash']!=tools.db_root():
log_('bad root, have: '+str(tools.db_root())+' need ' +str(block['root_hash']))
return False
txs=filter(lambda x: x['type']=='mint', block['txs'])
if len(txs)!=1:
log_('wrong number of mint txs')
return False
txs=filter(lambda x: x['type']=='sign', block['txs'])
txs=map(lambda x: len(x['jackpots']), txs)
if sum(txs)<custom.signers*2/3 and length>-1:
log_('not enough signatures')
return False
if length >= 0:
prev_block=tools.db_get(length)
to_hash={'prev_hash':prev_block['block_hash'], 'txs':block['txs']}
if not block['block_hash']==tools.det_hash(to_hash):
log_('det hash error')
return False
#total money spent must be less than the total amount of money in signed deposits for this block.
if tx_check(block['txs']):
log_('tx check')
return False
return True
if type(block_pair)==type([1,2,3]):
block=block_pair[0]
peer=block_pair[1]
else:
block=block_pair
peer=False
if 'block_hash' in block and block['block_hash'] in recent_hashes:
#tools.log('we already have that block:' +str(block))
return 0
#tools.log('attempt to add block: ' +str(block))
if block_check(block, DB):
#tools.log('add_block: ' + str(block))
tools.db_put(block['length'], block, DB)
tools.local_put('height', block['height'])
#take money from the creator
tools.local_put('length', block['length'])
orphans = tools.local_get('txs')
orphans=filter(lambda t: t['type']!='mint', orphans)
tools.local_put('txs', [])
for tx in block['txs']:
try:
transactions.update[tx['type']](tx, DB, True)
except Exception as exc:
tools.log('blockchain broke while adding block. Current datafiles are probably corrupted, and should be deleted.')
tools.log(exc)
error()
for tx in orphans:
add_tx(tx, DB)
peers=tools.local_get('peers')
if peer!=False and peers[peer]['blacklist']>0:
peers[peer]['blacklist']-=1
tools.local_put('peers', peers)#root hash written on the block is for the state before that block
tools.local_put('balance_proofs'+str(block['length']),tools.db_proof(tools.local_get('address')))
return
elif not peer==False:
peers=tools.local_get('peers')
if peer not in peers:
peers[peer]=tools.empty_peer()
peers[peer]['blacklist']+=1
def main(brainwallet, pubkey_flag=False):
DB = custom.DB
tools.log('custom.current_loc: ' + str(custom.current_loc))
print('starting full node')
if not pubkey_flag:
privkey = tools.det_hash(brainwallet)
pubkey = tools.privtopub(privkey)
else:
pubkey = brainwallet
a = tools.empty_peer()
b = custom.peers
#b[tools.getPublicIp()+':'+str(custom.port)]=a
processes = [
{
'target':
db.main,
'args': (DB['heart_queue'], custom.database_name, tools.log,
custom.database_port),
'name':
'db'
},
{
'target': auto_signer.mainloop,
'args': (),
'name': 'auto_signer'
},
{
'target': reward_collector.doit,
'args': (),
'name': 'auto_signer'
},
#{'target':tools.heart_monitor,
# 'args':(DB['heart_queue'], ),
# 'name':'heart_monitor'},
{
'target': blockchain.main,
'args': (DB, ),
'name': 'blockchain'
},
{
'target': api.main,
'args': (DB, DB['heart_queue']),
'name': 'api'
},
{
'target': peers_check.main,
'args': (b, DB),
'name': 'peers_check'
},
{
'target': networking.serve_forever,
'args': (peer_recieve_func, custom.port, DB['heart_queue'], True),
'name': 'peer_recieve'
}
]
cmds = []
cmd = multiprocessing.Process(**processes[0])
cmd.start()
cmds.append(cmd)
tools.log('starting ' + cmd.name)
time.sleep(4)
b = tools.db_existence(0)
#def empty_memoized(): return({'blockcount':-3000})
if not b:
tools.local_put('length', -1)
tools.local_put('height', -1)
tools.local_put('memoized_votes', {})
tools.local_put('txs', [])
tools.local_put('peers', {})
tools.local_put('targets', {})
tools.local_put('times', {})
tools.local_put('mine', False)
tools.local_put('my_sign_txs', {}) #empty_memoized())
tools.local_put('secrets', {})
money = db.default_entry()
money['amount'] += custom.all_money
tools.db_put(custom.creator, money)
tools.local_put('stop', False)
tools.log('stop: ' + str(tools.local_get('stop')))
for process in processes[1:]:
cmd = multiprocessing.Process(**process)
cmd.start()
cmds.append(cmd)
tools.log('starting ' + cmd.name)
if not pubkey_flag:
tools.local_put('privkey', privkey)
else:
tools.local_put('privkey', 'Default')
Address = tools.make_address([pubkey], 1)
tools.local_put('address', Address)
a = tools.db_proof(Address)
tools.local_put('balance_proofs-1', a)
tools.log('stop: ' + str(tools.local_get('stop')))
while not tools.local_get('stop'):
time.sleep(0.5)
tools.log('about to stop threads')
DB['heart_queue'].put('stop')
for p in [[custom.port, '127.0.0.1'], [custom.api_port, '127.0.0.1']]:
networking.connect('stop', p[0], p[1])
cmds.reverse()
for cmd in cmds[:-1]:
cmd.join()
tools.log('stopped a thread: ' + str(cmd))
time.sleep(2)
networking.connect('stop', custom.database_port, '127.0.0.1')
cmds[-1].join()
tools.log('stopped a thread: ' + str(cmds[-1]))
tools.log('all threads stopped')
sys.exit(0)
def main(brainwallet, pubkey_flag=False):
DB=custom.DB
tools.log('custom.current_loc: ' +str(custom.current_loc))
print('starting full node')
if not pubkey_flag:
privkey=tools.det_hash(brainwallet)
pubkey=tools.privtopub(privkey)
else:
pubkey=brainwallet
a=tools.empty_peer()
b=custom.peers
#b[tools.getPublicIp()+':'+str(custom.port)]=a
processes= [
{'target': db.main,
'args': (DB['heart_queue'], custom.database_name, tools.log, custom.database_port),
'name': 'db'},
{'target': auto_signer.mainloop,
'args': (),
'name': 'auto_signer'},
{'target': reward_collector.doit,
'args': (),
'name': 'auto_signer'},
#{'target':tools.heart_monitor,
# 'args':(DB['heart_queue'], ),
# 'name':'heart_monitor'},
{'target': blockchain.main,
'args': (DB,),
'name': 'blockchain'},
{'target': api.main,
'args': (DB, DB['heart_queue']),
'name': 'api'},
{'target': peers_check.main,
'args': (b, DB),
'name': 'peers_check'},
{'target': networking.serve_forever,
'args': (peer_recieve_func, custom.port, DB['heart_queue'], True),
'name': 'peer_recieve'}
]
cmds=[]
cmd=multiprocessing.Process(**processes[0])
cmd.start()
cmds.append(cmd)
tools.log('starting '+cmd.name)
time.sleep(4)
b=tools.db_existence(0)
#def empty_memoized(): return({'blockcount':-3000})
if not b:
tools.local_put('length', -1)
tools.local_put('height', -1)
tools.local_put('memoized_votes', {})
tools.local_put('txs', [])
tools.local_put('peers', {})
tools.local_put('targets', {})
tools.local_put('times', {})
tools.local_put('mine', False)
tools.local_put('my_sign_txs', {})#empty_memoized())
tools.local_put('secrets', {})
money=db.default_entry()
money['amount']+=custom.all_money
tools.db_put(custom.creator, money)
tools.local_put('stop', False)
tools.log('stop: ' +str(tools.local_get('stop')))
for process in processes[1:]:
cmd=multiprocessing.Process(**process)
cmd.start()
cmds.append(cmd)
tools.log('starting '+cmd.name)
if not pubkey_flag:
tools.local_put('privkey', privkey)
else:
tools.local_put('privkey', 'Default')
Address=tools.make_address([pubkey], 1)
tools.local_put('address', Address)
a=tools.db_proof(Address)
tools.local_put('balance_proofs-1', a)
tools.log('stop: ' +str(tools.local_get('stop')))
while not tools.local_get('stop'):
time.sleep(0.5)
tools.log('about to stop threads')
DB['heart_queue'].put('stop')
for p in [[custom.port, '127.0.0.1'],
[custom.api_port, '127.0.0.1']]:
networking.connect('stop', p[0], p[1])
cmds.reverse()
for cmd in cmds[:-1]:
cmd.join()
tools.log('stopped a thread: '+str(cmd))
time.sleep(2)
networking.connect('stop', custom.database_port, '127.0.0.1')
cmds[-1].join()
tools.log('stopped a thread: '+str(cmds[-1]))
tools.log('all threads stopped')
sys.exit(0)