def block(block):
block = block.to_dict(flat=False)
nodes = pp.read_nodes_from_file()
my_node = nodes[0]
if check_reward_target(block['transactions'][0], my_node,
block['hash'][0]) == False:
return False
last_block = get_last_block(my_node)
if (last_block == False):
return False
if last_block['hash'] != block['previous_hash'][0]:
consensus()
if float(last_block['timestamp']) > float(block['timestamp'][0]):
return False
merkle_norm = binascii.hexlify(
merkle.create_merkle_tree(block['transactions'])).decode('utf-8')
if (merkle_norm != block['merkle'][0]):
return False
# data_for_hash = bytes(str(block['timestamp'][0]) + str(block['nonce'][0]) + str(block['previous_hash'][0]) + str(block['transactions']) + str(['merkle'][0]), 'utf-8')
# hash_norm = sha256(data_for_hash).hexdigest()
# print(hash_norm)
# print(block['hash'][0])
# if (hash_norm != block['hash'][0]):
# return False
# print("Hash passsed")
if (len(block['transactions']) > 1):
txs = deepcopy(block['transactions'])
i = 0
for tx in txs:
if i > 0:
if script.is_it_valid(tx) == False:
return False
i += 1
return True
def block(block):
block = block.to_dict(flat=False)
nodes = pp.read_nodes_from_file()
my_node = nodes[0]
if check_reward_target(block['transactions'][0], my_node, block['hash'][0]) == False:
return False
last_block = get_last_block(my_node)
if (last_block == False):
return False
if last_block['hash'] != block['previous_hash'][0]:
consensus()
if float(last_block['timestamp']) > float(block['timestamp'][0]):
return False
merkle_norm = binascii.hexlify(merkle.create_merkle_tree(block['transactions'])).decode('utf-8')
if (merkle_norm != block['merkle'][0]):
return False
if (len(block['transactions']) > 1):
txs = deepcopy(block['transactions'])
i = 0
for tx in txs:
if i > 0:
if script.is_it_valid(tx) == False:
return False
i += 1
return True
def list_of_nodes():
if request.method == 'GET':
data = pending_pool.read_nodes_from_file('node')
ret = ''.join(data)
if data != False:
return (ret)
else:
return ("Something get wrong!\nYou have no nodes")
def broadcast_to_friend(data, where):
nodes = []
nodes = pp.read_nodes_from_file()
if (type(data) is block.Block):
a = data.__dict__
data = a
for node in nodes:
try:
req = requests.post("http://" + node + where, data=data)
except:
print("Node has no connection")
def consensus():
nodes = pp.read_nodes_from_file("node")
len_list = []
dicti = {}
for x in nodes:
dicti = {}
dicti["ip"] = x
try:
dicti["length"] = int(
requests.get("http://" + x + "/chain/length").text)
except:
dicti["length"] = 0
len_list.append(dicti)
newlist = sorted(len_list, key=lambda k: k['length'])
if (newlist[-1]['ip'] != nodes[0]):
req = requests.get("http://" + newlist[-1]['ip'] + "/chain")
chain = req.text
req = requests.get("http://" + newlist[-1]['ip'] + "/utxo")
utxo = req.text
def main():
ip = pending_pool.read_nodes_from_file()
if ip == False:
PORT = input("Choose port\n")
try:
val = int(PORT)
try:
fd = open("port.txt", 'w')
fd.write(PORT)
fd.close()
pending_pool.add_node_to_file("0.0.0.0:" + PORT)
app.run(host='0.0.0.0', port=PORT, debug=False)
print("!!!Server port was saved in a file port.txt!!!")
except IOError:
print("IOError")
except (ValueError, PermissionError, OverflowError) as e:
print("Invalid port, stupid")
else:
app.run(host=ip[0][:7], port=ip[0][8:13], debug=False)