def main():
k_m = KeyManager()
um = UTXOManager(k_m.my_address())
i_k_m = KeyManager()
u_k_m = KeyManager()
t1 = CoinbaseTransaction(k_m.my_address())
t2 = CoinbaseTransaction(k_m.my_address())
t3 = CoinbaseTransaction(k_m.my_address())
t4 = Transaction([TransactionInput(t1.to_dict(), 0)], [
TransactionOutput(u_k_m.my_address(), 10.0),
TransactionOutput(i_k_m.my_address(), 20.0)
])
transactions = []
transactions.append(t1.to_dict())
transactions.append(t2.to_dict())
transactions.append(t3.to_dict())
transactions.append(t4.to_dict())
um.extract_utxos(transactions)
balance = um.my_balance
print(balance)
class SimpleBC_Gui(Frame):
def __init__(self, parent):
Frame.__init__(self, parent)
self.parent = parent
self.parent.protocol('WM_DELETE_WINDOW', self.quit)
self.coin_balance = StringVar(self.parent, '0')
self.status_message = StringVar(self.parent, 'Ready')
self.initApp()
self.setupGUI()
def quit(self, event=None):
"""
アプリの終了
"""
self.parent.destroy()
def initApp(self):
"""
ClientCoreとの接続含めて必要な初期化処理はここで実行する
"""
print('SimpleBitcoin client is now activating ...: ')
self.km = KeyManager()
self.um = UTXOManager(self.km.my_address())
# テスト用途（本来はこんな処理しない）
t1 = CoinbaseTransaction(self.km.my_address())
t2 = CoinbaseTransaction(self.km.my_address())
t3 = CoinbaseTransaction(self.km.my_address())
transactions = []
transactions.append(t1.to_dict())
transactions.append(t2.to_dict())
transactions.append(t3.to_dict())
self.um.extract_utxos(transactions)
self.update_balance()
def display_info(self, title, info):
"""
ダイアログボックスを使ったメッセージの表示
"""
f = Tk()
label = Label(f, text=title)
label.pack()
info_area = Text(f, width=70, height=50)
info_area.insert(INSERT, info)
info_area.pack()
def update_status(self, info):
"""
画面下部のステータス表示内容を変更する
"""
self.status_message.set(info)
def update_balance(self):
"""
総額表示の内容を最新状態に合わせて変更する
"""
bal = str(self.um.my_balance)
self.coin_balance.set(bal)
def create_menu(self):
"""
メニューバーに表示するメニューを定義する
"""
top = self.winfo_toplevel()
self.menuBar = Menu(top)
top['menu'] = self.menuBar
self.subMenu = Menu(self.menuBar, tearoff=0)
self.menuBar.add_cascade(label='Menu', menu=self.subMenu)
self.subMenu.add_command(label='Show My Address',
command=self.show_my_address)
self.subMenu.add_command(
label='Load my Keys',
command=self.show_input_dialog_for_key_loading)
self.subMenu.add_command(label='Update Blockchain',
command=self.update_block_chain)
self.subMenu.add_separator()
self.subMenu.add_command(label='Quit', command=self.quit)
self.subMenu2 = Menu(self.menuBar, tearoff=0)
self.menuBar.add_cascade(label='Settings', menu=self.subMenu2)
self.subMenu2.add_command(label='Renew my Keys',
command=self.renew_my_keypairs)
self.subMenu2.add_command(label='Connection Info',
command=self.edit_conn_info)
self.subMenu3 = Menu(self.menuBar, tearoff=0)
self.menuBar.add_cascade(label='Advance', menu=self.subMenu3)
self.subMenu3.add_command(label='Show logs',
command=self.open_log_window)
self.subMenu3.add_command(label='Show Blockchain',
command=self.show_my_block_chain)
def show_my_address(self):
f = Tk()
label = Label(f, text='My Address')
label.pack()
key_info = Text(f, width=70, height=10)
my_address = self.km.my_address()
key_info.insert(INSERT, my_address)
key_info.pack()
def show_input_dialog_for_key_loading(self):
def load_my_keys():
# ファイル選択ダイアログの表示
f2 = Tk()
f2.withdraw()
fTyp = [("", "*.pem")]
iDir = os.path.abspath(os.path.dirname(__file__))
messagebox.showinfo('Load key pair', 'please choose your key file')
f_name = filedialog.askopenfilename(filetypes=fTyp,
initialdir=iDir)
try:
file = open(f_name)
data = file.read()
target = binascii.unhexlify(data)
# TODO: 本来は鍵ペアのファイルが不正などの異常系処理を考えるべき
self.km.import_key_pair(target, p_phrase.get())
except Exception as e:
print(e)
finally:
file.close()
f.destroy()
f2.destroy()
self.um = UTXOManager(self.km.my_address())
self.um.my_balance = 0
self.update_balance()
f = Tk()
label0 = Label(f, text='Please enter pass phrase for your key pair')
frame1 = ttk.Frame(f)
label1 = ttk.Label(frame1, text='Pass Phrase:')
p_phrase = StringVar()
entry1 = ttk.Entry(frame1, textvariable=p_phrase)
button1 = ttk.Button(frame1, text='Load', command=load_my_keys)
label0.grid(row=0, column=0, sticky=(N, E, S, W))
frame1.grid(row=1, column=0, sticky=(N, E, S, W))
label1.grid(row=2, column=0, sticky=E)
entry1.grid(row=2, column=1, sticky=W)
button1.grid(row=3, column=1, sticky=W)
def update_block_chain(self):
pass
def renew_my_keypairs(self):
"""
利用する鍵ペアを更新する。
"""
def save_my_pem():
self.km = KeyManager()
my_pem = self.km.export_key_pair(p_phrase.get())
my_pem_hex = binascii.hexlify(my_pem).decode('ascii')
# とりあえずファイル名は固定
path = 'my_key_pair.pem'
f1 = open(path, 'a')
f1.write(my_pem_hex)
f1.close()
f.destroy()
self.um = UTXOManager(self.km.my_address())
self.um.my_balance = 0
self.update_balance()
f = Tk()
f.title('New Key Gene')
label0 = Label(f,
text='Please enter pass phrase for your new key pair')
frame1 = ttk.Frame(f)
label1 = ttk.Label(frame1, text='Pass Phrase:')
p_phrase = StringVar()
entry1 = ttk.Entry(frame1, textvariable=p_phrase)
button1 = ttk.Button(frame1, text='Generate', command=save_my_pem)
label0.grid(row=0, column=0, sticky=(N, E, S, W))
frame1.grid(row=1, column=0, sticky=(N, E, S, W))
label1.grid(row=2, column=0, sticky=E)
entry1.grid(row=2, column=1, sticky=W)
button1.grid(row=3, column=1, sticky=W)
def edit_conn_info(self):
"""
Coreノードへの接続情報の編集
"""
pass
def open_log_window(self):
"""
別ウィンドウでログ情報を表示する。デバッグ用
"""
pass
def show_my_block_chain(self):
"""
自分が保持しているブロックチェーンの中身を確認する
"""
pass
def setupGUI(self):
"""
画面に必要なパーツを並べる
"""
self.parent.bind('<Control-q>', self.quit)
self.parent.title("SimpleBitcoin GUI")
self.pack(fill=BOTH, expand=1)
self.create_menu()
lf = LabelFrame(self, text='Current Balance')
lf.pack(side=TOP, fill='both', expand='yes', padx=7, pady=7)
lf2 = LabelFrame(self, text="")
lf2.pack(side=BOTTOM, fill='both', expand='yes', padx=7, pady=7)
#所持コインの総額表示領域のラベル
self.balance = Label(lf,
textvariable=self.coin_balance,
font='Helvetica 20')
self.balance.pack()
#受信者となる相手の公開鍵
self.label = Label(lf2, text='Recipient Address:')
self.label.grid(row=0, pady=5)
self.recipient_pubkey = Entry(lf2, bd=2)
self.recipient_pubkey.grid(row=0, column=1, pady=5)
# 送金額
self.label2 = Label(lf2, text='Amount to pay :')
self.label2.grid(row=1, pady=5)
self.amountBox = Entry(lf2, bd=2)
self.amountBox.grid(row=1, column=1, pady=5, sticky='NSEW')
# 手数料
self.label3 = Label(lf2, text='Fee (Optional) :')
self.label3.grid(row=2, pady=5)
self.feeBox = Entry(lf2, bd=2)
self.feeBox.grid(row=2, column=1, pady=5, sticky='NSEW')
# 間隔の開け方がよくわからんので空文字で場所確保
self.label4 = Label(lf2, text='')
self.label4.grid(row=3, pady=5)
# 送金実行ボタン
self.sendBtn = Button(lf2,
text='\nSend Coin(s)\n',
command=self.sendCoins)
self.sendBtn.grid(row=4, column=1, sticky='NSEW')
# 下部に表示するステータスバー
stbar = Label(self.winfo_toplevel(),
textvariable=self.status_message,
bd=1,
relief=SUNKEN,
anchor=W)
stbar.pack(side=BOTTOM, fill=X)
# 送金実行ボタン押下時の処理実体
def sendCoins(self):
sendAtp = self.amountBox.get()
recipientKey = self.recipient_pubkey.get()
sendFee = self.feeBox.get()
if not sendAtp:
messagebox.showwarning('Warning',
'Please enter the Amount to pay.')
elif len(recipientKey) <= 1:
messagebox.showwarning('Warning',
'Please enter the Recipient Address.')
elif not sendFee:
sendFee = 0
else:
result = messagebox.askyesno(
'Confirmation', 'Sending {} SimpleBitcoins to :\n {}'.format(
sendAtp, recipientKey))
if result:
if 0 < len(self.um.utxo_txs):
print('Sending {} SimpleBitcoins to reciever:\n {}'.format(
sendAtp, recipientKey))
else:
messagebox.showwarning('Short of Coin.',
'Not enough coin to be sent...')
return
utxo, idx = self.um.get_utxo_tx(0)
t = Transaction([TransactionInput(utxo, idx)],
[TransactionOutput(recipientKey, sendAtp)])
counter = 1
# TransactionInputが送信額を超えるまで繰り返して取得しTransactionとして完成させる
while t.is_enough_inputs(sendFee) is not True:
new_utxo, new_idx = self.um.get_utxo_tx(counter)
t.inputs.append(TransactionInput(new_utxo, new_idx))
counter += 1
if counter > len(self.um.utxo_txs):
messagebox.showwarning('Short of Coin.',
'Not enough coin to be sent...')
break
# 正常なTransactionが生成できた時だけ秘密鍵で署名を実行する
if t.is_enough_inputs(sendFee) is True:
# まずお釣り用Transactionを作る
change = t.compute_change(sendFee)
t.outputs.append(
TransactionOutput(self.km.my_address(), change))
to_be_signed = json.dumps(t.to_dict(), sort_keys=True)
signed = self.km.compute_digital_signature(to_be_signed)
new_tx = json.loads(to_be_signed)
new_tx['signature'] = signed
# TODO: 本来はここで出来上がったTransactionを送信する処理を入れる
print('signed new_tx:', json.dumps(new_tx))
# 実験的にお釣り分の勘定のため新しく生成したTransactionをUTXOとして追加しておくが
# 本来はブロックチェーンの更新に合わせて再計算した方が適切
self.um.put_utxo_tx(t.to_dict())
to_be_deleted = 0
del_list = []
while to_be_deleted < counter:
del_tx = self.um.get_utxo_tx(to_be_deleted)
del_list.append(del_tx)
to_be_deleted += 1
for dx in del_list:
self.um.remove_utxo_tx(dx)
self.amountBox.delete(0, END)
self.feeBox.delete(0, END)
self.recipient_pubkey.delete(0, END)
self.update_balance()
