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Electrum - a lightweight Bitcoin client and its server
Licence: GNU GPL v3
Author: thomasv1@gmx.de
Language: Python
Main features:
Client:
* The client uses a deterministic wallet; if the wallet is lost, it can be recovered from its passphrase.
* The client does not download the Bitcoin blockchain; it requests that information from the server
* The client does not send its private keyes to the server.
* The client does not need to open a port, it simply polls the server for updates.
Server:
* The server uses a patched version of the Bitcoin daemon that can forward transactions, and bitcoin-abe
* The server code is open source. Anyone can run a server, removing single points of failure concerns.
* The server knows which set of Bitcoin addresses belong to the same wallet, which might raise concerns about anonymity.
However, it should be possible to write clients capable of using several servers.
----------------------------------------------------------
INSTALLATION
Client:
1. install python-edcsa and pycrypto:
* sudo easy_install ecdsa
* sudo easy_install pycrypto
2. run the client:
python electrum
Server:
1. patch and recompile the bitcoin daemon - bitcoinrpc.diff
2. install bitcoin-abe
3. install bitcoinrpc, patch it too
3. launch the server:
python server.py

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#!/usr/bin/env python
#
# Electrum - lightweight Bitcoin client
# Copyright (C) 2011 thomasv@gitorious
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import sys, base64, os, re, hashlib, socket, getpass, copy, operator, urllib2, ast
try:
import ecdsa
except:
print "python-ecdsa does not seem to be installed. Try 'sudo easy_install ecdsa'"
exit(1)
try:
import Crypto
has_encryption = True
except:
has_encryption = False
############ functions from pywallet #####################
addrtype = 0
def hash_160(public_key):
md = hashlib.new('ripemd160')
md.update(hashlib.sha256(public_key).digest())
return md.digest()
def public_key_to_bc_address(public_key):
h160 = hash_160(public_key)
return hash_160_to_bc_address(h160)
def hash_160_to_bc_address(h160):
vh160 = chr(addrtype) + h160
h = Hash(vh160)
addr = vh160 + h[0:4]
return b58encode(addr)
def bc_address_to_hash_160(addr):
bytes = b58decode(addr, 25)
return bytes[1:21]
__b58chars = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
__b58base = len(__b58chars)
def b58encode(v):
""" encode v, which is a string of bytes, to base58.
"""
long_value = 0L
for (i, c) in enumerate(v[::-1]):
long_value += (256**i) * ord(c)
result = ''
while long_value >= __b58base:
div, mod = divmod(long_value, __b58base)
result = __b58chars[mod] + result
long_value = div
result = __b58chars[long_value] + result
# Bitcoin does a little leading-zero-compression:
# leading 0-bytes in the input become leading-1s
nPad = 0
for c in v:
if c == '\0': nPad += 1
else: break
return (__b58chars[0]*nPad) + result
def b58decode(v, length):
""" decode v into a string of len bytes
"""
long_value = 0L
for (i, c) in enumerate(v[::-1]):
long_value += __b58chars.find(c) * (__b58base**i)
result = ''
while long_value >= 256:
div, mod = divmod(long_value, 256)
result = chr(mod) + result
long_value = div
result = chr(long_value) + result
nPad = 0
for c in v:
if c == __b58chars[0]: nPad += 1
else: break
result = chr(0)*nPad + result
if length is not None and len(result) != length:
return None
return result
def Hash(data):
return hashlib.sha256(hashlib.sha256(data).digest()).digest()
def EncodeBase58Check(vchIn):
hash = Hash(vchIn)
return b58encode(vchIn + hash[0:4])
def DecodeBase58Check(psz):
vchRet = b58decode(psz, None)
key = vchRet[0:-4]
csum = vchRet[-4:]
hash = Hash(key)
cs32 = hash[0:4]
if cs32 != csum:
return None
else:
return key
def PrivKeyToSecret(privkey):
return privkey[9:9+32]
def SecretToASecret(secret):
vchIn = chr(addrtype+128) + secret
return EncodeBase58Check(vchIn)
def ASecretToSecret(key):
vch = DecodeBase58Check(key)
if vch and vch[0] == chr(addrtype+128):
return vch[1:]
else:
return False
########### end pywallet functions #######################
def int_to_hex(i, length=1):
s = hex(i)[2:]
s = "0"*(2*length - len(s)) + s
return s.decode('hex')[::-1].encode('hex')
# password encryption
from Crypto.Cipher import AES
BLOCK_SIZE = 32
PADDING = '{'
pad = lambda s: s + (BLOCK_SIZE - len(s) % BLOCK_SIZE) * PADDING
EncodeAES = lambda c, s: base64.b64encode(c.encrypt(pad(s)))
DecodeAES = lambda c, e: c.decrypt(base64.b64decode(e)).rstrip(PADDING)
# secp256k1, http://www.oid-info.com/get/1.3.132.0.10
_p = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2FL
_r = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141L
_b = 0x0000000000000000000000000000000000000000000000000000000000000007L
_a = 0x0000000000000000000000000000000000000000000000000000000000000000L
_Gx = 0x79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798L
_Gy = 0x483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8L
curve_secp256k1 = ecdsa.ellipticcurve.CurveFp( _p, _a, _b )
generator_secp256k1 = ecdsa.ellipticcurve.Point( curve_secp256k1, _Gx, _Gy, _r )
oid_secp256k1 = (1,3,132,0,10)
SECP256k1 = ecdsa.curves.Curve("SECP256k1", curve_secp256k1, generator_secp256k1, oid_secp256k1 )
no_wallet_message = "Wallet file not found.\nPlease provide a passphrase and a password. The passphrase will be used as a seed to generate Bitcoin addresses. It should be long and random, and nobody should be able to guess it. Memorize it, or write it down and keep it in a vault. The password will be used to encrypt your local wallet file. You will need to enter your password everytime you use your wallet. If you lose your password, you can still recover your wallet with the passphrase."
def filter(s):
out = re.sub('( [^\n]*|)\n','',s)
out = out.replace(' ','')
out = out.replace('\n','')
return out
def raw_tx( inputs, outputs, for_sig = None ):
s = int_to_hex(1,4) + ' version\n'
s += int_to_hex( len(inputs) ) + ' number of inputs\n'
for i in range(len(inputs)):
_, _, p_hash, p_index, p_script, pubkey, sig = inputs[i]
s += p_hash.decode('hex')[::-1].encode('hex') + ' prev hash\n'
s += int_to_hex(p_index,4) + ' prev index\n'
if for_sig is None:
sig = sig + chr(1) # hashtype
script = int_to_hex( len(sig)) + ' push %d bytes\n'%len(sig)
script += sig.encode('hex') + ' sig\n'
pubkey = chr(4) + pubkey
script += int_to_hex( len(pubkey)) + ' push %d bytes\n'%len(pubkey)
script += pubkey.encode('hex') + ' pubkey\n'
elif for_sig==i:
script = p_script + ' scriptsig \n'
else:
script=''
s += int_to_hex( len(filter(script))/2 ) + ' script length \n'
s += script
s += "ffffffff" + ' sequence\n'
s += int_to_hex( len(outputs) ) + ' number of outputs\n'
for output in outputs:
addr, amount = output
s += int_to_hex( amount, 8) + ' amount: %d\n'%amount
script = '76a9' # op_dup, op_hash_160
script += '14' # push 0x14 bytes
script += bc_address_to_hash_160(addr).encode('hex')
script += '88ac' # op_equalverify, op_checksig
s += int_to_hex( len(filter(script))/2 ) + ' script length \n'
s += script + ' script \n'
s += int_to_hex(0,4) # lock time
if for_sig is not None: s += int_to_hex(1, 4) # hash type
return s
class InvalidPassword(Exception):
pass
wallet_path = os.environ["HOME"] + '/.bitcoin/electrum.dat'
class Wallet:
def __init__(self):
self.gap_limit = 5 # configuration
self.host = 'ecdsa.org'
self.port = 50000
self.fee = 0.005
# saved fields
self.use_encryption = False
self.addresses = []
self.passphrase = '' # encrypted
self.private_keys = repr([]) # encrypted
self.change_addresses = [] # index of addresses used as change
self.status = {} # current status of addresses
self.history = {}
self.labels = {} # labels for addresses and transactions
self.addressbook = [] # outgoing addresses, for payments
self.blocks = 0
# not saved
self.message = ''
self.tx_history = {}
def is_mine(self, address):
return address in self.addresses
def is_change(self, address):
if not self.is_mine(address):
return False
k = self.addresses.index(address)
return k in self.change_addresses
def is_valid(self,addr):
ADDRESS_RE = re.compile('[1-9A-HJ-NP-Za-km-z]{26,}\\Z')
return ADDRESS_RE.match(addr)
def create_new_address(self, for_change, password):
passphrase = self.pw_decode( self.passphrase, password)
i = len( self.addresses ) - len(self.change_addresses) if not for_change else len(self.change_addresses)
seed = Hash( "%d:%d:"%(i,for_change) + passphrase )
order = generator_secp256k1.order()
secexp = ecdsa.util.randrange_from_seed__trytryagain( seed, order )
secret = SecretToASecret( ('%064x' % secexp).decode('hex') )
private_key = ecdsa.SigningKey.from_secret_exponent( secexp, curve = SECP256k1 )
public_key = private_key.get_verifying_key()
address = public_key_to_bc_address( '04'.decode('hex') + public_key.to_string() )
try:
private_keys = ast.literal_eval( self.pw_decode( self.private_keys, password) )
private_keys.append(secret)
except:
raise InvalidPassword("")
self.private_keys = self.pw_encode( repr(private_keys), password)
self.addresses.append(address)
if for_change: self.change_addresses.append( i )
h = self.retrieve_history(address)
self.history[address] = h
self.status[address] = h[-1]['blk_hash'] if h else None
return address
def recover(self, password):
passphrase = self.pw_decode( self.passphrase, password)
# todo: recover receiving addresses from tx
num_gap = 0
while True:
addr = self.create_new_address(True, password)
print "recovering", addr
if self.status[addr] is None: break
num_gap = 0
while True:
addr = self.create_new_address(False, password)
print "recovering", addr
if self.status[addr] is None:
num_gap += 1
if num_gap == self.gap_limit: break
else:
num_gap = 0
# remove limit-1 addresses. [ this is ok, because change addresses are at the beginning of the list]
n = self.gap_limit
self.addresses = self.addresses[:-n]
self.keys = self.private_keys[:-n]
# history and addressbook
self.update_tx_history()
for tx in self.tx_history.values():
if tx['value']<0:
for i in tx['outputs']:
if not self.is_mine(i) and i not in self.addressbook:
self.addressbook.append(i)
# redo labels
self.update_tx_labels()
def save(self):
s = repr( (self.use_encryption, self.fee, self.host, self.blocks,
self.passphrase, self.addresses, self.private_keys,
self.change_addresses, self.status, self.history,
self.labels, self.addressbook) )
f = open(wallet_path,"w")
f.write(s)
f.close()
def read(self):
try:
f = open(wallet_path,"r")
data = f.read()
f.close()
except:
return False
try:
(self.use_encryption, self.fee, self.host, self.blocks,
self.passphrase, self.addresses, self.private_keys,
self.change_addresses, self.status, self.history,
self.labels, self.addressbook) = ast.literal_eval( data )
except:
return False
self.update_tx_history()
return True
def get_new_address(self, password):
n = 0
for addr in self.addresses[-self.gap_limit:]:
if self.history[addr] == []:
n = n + 1
if n < self.gap_limit:
try:
new_address = self.create_new_address(False, password)
except InvalidPassword:
return False, "wrong password"
self.save()
return True, new_address
else:
return False, "The last %d addresses in your list have never been used. You should use them first, or increase the allowed gap size in your preferences. "%self.gap_limit
def get_addr_balance(self, addr):
h = self.history.get(addr)
c = u = 0
for item in h:
v = item['value']
if item['height']:
c += v
else:
u += v
return c, u
def get_balance(self):
conf = unconf = 0
for addr in self.addresses:
c, u = self.get_addr_balance(addr)
conf += c
unconf += u
return conf, unconf
def request(self, request ):
if self.port == 80:
try:
out = urllib2.urlopen('http://'+self.host+'/q/tw', request, timeout=5).read()
except:
out = ''
else:
s = socket.socket( socket.AF_INET, socket.SOCK_STREAM)
s.connect(( self.host, self.port))
s.send(request)
out = ''
while 1:
msg = s.recv(1024)
if msg: out += msg
else: break
s.close()
if re.match('[^:]\s*\(', out): out = ''
return out
def retrieve_message(self):
if not self.message:
self.message = self.request( repr ( ('msg', '')))
def send_tx(self, data):
return self.request( repr ( ('tx', data )))
def retrieve_history(self, address):
return ast.literal_eval( self.request( repr ( ('h', address ))) )
def poll(self):
return ast.literal_eval( self.request( repr ( ('poll', '' ))))
def new_session(self):
self.message = self.request( repr ( ('watch', repr(self.addresses) )))
def update(self):
blocks, changed_addresses = self.poll()
self.blocks = blocks
for addr, blk_hash in changed_addresses.items():
if self.status[addr] != blk_hash:
print "updating history for", addr
self.history[addr] = self.retrieve_history(addr)
self.status[addr] = blk_hash
self.update_tx_history()
if changed_addresses:
return True
else:
return False
def choose_inputs_outputs( self, to_addr, amount, fee, password):
""" todo: minimize tx size """
amount = int( 1e8*amount )
fee = int( 1e8*fee )
total = 0
inputs = []
for addr in self.addresses:
h = self.history.get(addr)
for item in h:
if item.get('raw_scriptPubKey'):
v = item.get('value')
total += v
inputs.append((addr, v, item['tx_hash'], item['pos'], item['raw_scriptPubKey'], None, None) )
if total >= amount + fee: break
if total >= amount + fee: break
else:
print "not enough funds: %d %d"%(total, fee)
return False, "not enough funds: %d %d"%(total, fee)
outputs = [ (to_addr, amount) ]
change_amount = total - ( amount + fee )
if change_amount != 0:
# first look for unused change addresses
for addr in self.addresses:
i = self.addresses.index(addr)
if i not in self.change_addresses: continue
if self.history.get(addr): continue
change_address = addr
break
else:
change_address = self.create_new_address(True, password)
print "new change address", change_address
outputs.append( (change_address, change_amount) )
return inputs, outputs
def sign_inputs( self, inputs, outputs, password ):
s_inputs = []
for i in range(len(inputs)):
addr, v, p_hash, p_pos, p_scriptPubKey, _, _ = inputs[i]
private_key = self.get_private_key(addr, password)
public_key = private_key.get_verifying_key()
pubkey = public_key.to_string()
tx = filter( raw_tx( inputs, outputs, for_sig = i ) )
sig = private_key.sign_digest( Hash( tx.decode('hex') ), sigencode = ecdsa.util.sigencode_der )
assert public_key.verify_digest( sig, Hash( tx.decode('hex') ), sigdecode = ecdsa.util.sigdecode_der)
s_inputs.append( (addr, v, p_hash, p_pos, p_scriptPubKey, pubkey, sig) )
return s_inputs
def pw_encode(self, s, password):
if password:
secret = Hash(password)
cipher = AES.new(secret)
return EncodeAES(cipher, s)
else:
return s
def pw_decode(self, s, password):
if password:
secret = Hash(password)
cipher = AES.new(secret)
return DecodeAES(cipher, s)
else:
return s
def get_private_key( self, addr, password ):
try:
private_keys = ast.literal_eval( self.pw_decode( self.private_keys, password ) )
except:
raise InvalidPassword("")
k = self.addresses.index(addr)
secret = private_keys[k]
b = ASecretToSecret(secret)
secexp = int( b.encode('hex'), 16)
private_key = ecdsa.SigningKey.from_secret_exponent( secexp, curve=SECP256k1 )
public_key = private_key.get_verifying_key()
assert addr == public_key_to_bc_address( chr(4) + public_key.to_string() )
return private_key
def get_tx_history(self):
lines = self.tx_history.values()
lines = sorted(lines, key=operator.itemgetter("nTime"))
return lines
def update_tx_history(self):
self.tx_history= {}
for addr in self.addresses:
for tx in self.history[addr]:
tx_hash = tx['tx_hash']
line = self.tx_history.get(tx_hash)
if not line:
self.tx_history[tx_hash] = copy.copy(tx)
line = self.tx_history.get(tx_hash)
else:
line['value'] += tx['value']
if line['blk_hash'] == 'mempool':
line['nTime'] = 1e12
self.update_tx_labels()
def update_tx_labels(self):
for tx in self.tx_history.values():
default_label = ''
if tx['value']<0:
for o_addr in tx['outputs']:
if not self.is_change(o_addr):
dest_label = self.labels.get(o_addr)
if dest_label:
default_label = 'to: ' + dest_label
else:
default_label = 'to: ' + o_addr
else:
for o_addr in tx['outputs']:
if self.is_mine(o_addr) and not self.is_change(o_addr):
dest_label = self.labels.get(o_addr)
if dest_label:
default_label = 'at: ' + dest_label
else:
default_label = 'at: ' + o_addr
tx['default_label'] = default_label
def send(self, to_address, amount, label, password):
try:
inputs, outputs = wallet.choose_inputs_outputs( to_address, amount, self.fee, password )
except InvalidPassword: return False, "Wrong password"
if not inputs: return False, "Not enough funds"
try:
s_inputs = wallet.sign_inputs( inputs, outputs, password )
except InvalidPassword:
return False, "Wrong password"
tx = raw_tx( s_inputs, outputs )
tx = filter( tx )
tx_hash = Hash(tx.decode('hex') )[::-1].encode('hex')
out = self.send_tx(tx)
if out != tx_hash:
return False, "error: hash mismatch"
wallet.labels[tx_hash] = label
wallet.save()
return True, tx_hash
if __name__ == '__main__':
try:
cmd = sys.argv[1]
except:
cmd = "gui"
known_commands = ['balance', 'sendtoaddress', 'password', 'getnewaddress', 'addresses', 'history', 'label', 'gui', 'all_addresses']
if cmd not in known_commands:
print "Known commands:", ', '.join(known_commands)
exit(0)
wallet = Wallet()
if cmd=='gui':
import gui
gui.init_wallet(wallet)
gui = gui.BitcoinGUI(wallet)
gui.main()
exit(0)
if not wallet.read():
print no_wallet_message
passphrase = raw_input("Enter passphrase: ")
if len(passphrase)<20:
print "Passphrase too short. Please at least 20 characters"
exit(1)
if has_encryption:
password = getpass.getpass("Password (hit return if you do not wish to encrypt your wallet):")
if password:
password2 = getpass.getpass("Confirm password:")
if password != password2:
print "error"
exit(1)
else:
password = None
print "in order to use wallet encryption, please install pycrypto (sudo easy_install pycrypto)"
wallet.passphrase = wallet.pw_encode( passphrase, password)
print "server name and port number (default: ecdsa.org:50000)"
host = raw_input("server:")
if not host: host = 'ecdsa.org'
port = raw_input("port:")
if not port: port = 50000
else: port = int(port)
print "default fee for transactions (default 0.005)"
fee = raw_input("default fee:")
if not fee: fee = 0.005
wallet.fee = fee
wallet.gap_limit = 5
wallet.host = host
wallet.port = port
wallet.recover(password)
wallet.save()
wallet.new_session()
wallet.update()
wallet.save()
if cmd in ['sendtoaddress', 'password', 'getnewaddress']:
password = getpass.getpass('Password:') if wallet.use_encryption else None
if cmd == 'balance':
c, u = wallet.get_balance()
if u:
print c*1e-8, u*1e-8
else:
print c*1e-8
elif cmd in [ 'addresses', 'all_addresses']:
for addr in wallet.addresses:
if cmd == 'all_addresses' or not wallet.is_change(addr):
label = wallet.labels.get(addr) if not wallet.is_change(addr) else "[change]"
if label is None: label = ''
h = wallet.history.get(addr)
ni = no = 0
for item in h:
if item['is_in']: ni += 1
else: no += 1
print addr, no, ni, wallet.get_addr_balance(addr)[0]*1e-8, label
if cmd == 'history':
lines = wallet.get_tx_history()
b = 0
for line in lines:
import datetime
v = 1.*line['value']/1e8
b += v
v_str = "%f"%v if v<0 else "+%f"%v
try:
time_str = datetime.datetime.fromtimestamp( line['nTime'])
except:
print line['nTime']
time_str = 'pending'
label = line.get('label')
if not label: label = line['tx_hash']
else: label = label + ' '*(64 - len(label) )
print time_str, " ", label, " ", v_str, " ", "%f"%b
print "# balance: ", b
elif cmd == 'label':
try:
tx = sys.argv[2]
label = ' '.join(sys.argv[3:])
except:
print "syntax: label <tx_hash> <text>"
exit(1)
wallet.labels[tx] = label
wallet.save()
elif cmd == 'sendtoaddress':
try:
to_address = sys.argv[2]
amount = float(sys.argv[3])
label = ' '.join(sys.argv[4:])
except:
print "syntax: send <recipient> <amount> [label]"
exit(1)
r, h = wallet.send( to_address, amount, label, password )
print h
elif cmd == 'getnewaddress':
a = wallet.get_new_address()
if a:
print a
else:
print "Maximum gap reached. Increase gap in order to create more addresses."
elif cmd == 'password':
try:
passphrase = wallet.pw_decode( wallet.passphrase, password)
private_keys = ast.literal_eval( wallet.pw_decode( wallet.private_keys, password) )
except:
print "sorry"
exit(1)
new_password = getpass.getpass('New password:')
if new_password == getpass.getpass('Confirm new password:'):
wallet.use_encryption = (new_password != '')
wallet.passphrase = wallet.pw_encode( passphrase, new_password)
wallet.private_keys = wallet.pw_encode( repr( private_keys ), new_password)
wallet.save()
else:
print "error: mismatch"

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#!/usr/bin/env python
#
# Electrum - lightweight Bitcoin client
# Copyright (C) 2011 thomasv@gitorious
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import datetime
import thread, time, ast
import pygtk
pygtk.require('2.0')
import gtk, gobject
gtk.gdk.threads_init()
APP_NAME = "Electrum"
def format_satoshis(x):
xx = ("%f"%(x*1e-8)).rstrip('0')
if xx[-1] =='.': xx+="00"
if xx[-2] =='.': xx+="0"
return xx
def numbify(entry, is_int = False):
text = entry.get_text().strip()
s = ''.join([i for i in text if i in '0123456789.'])
entry.set_text(s)
def init_wallet(wallet):
if not wallet.read():
passphrase = None
while not passphrase:
dialog = gtk.MessageDialog(
parent = None,
flags = gtk.DIALOG_MODAL,
buttons = gtk.BUTTONS_OK_CANCEL,
message_format = "Wallet not found. Please enter a passphrase to create or recover your wallet. Minimum length: 20 characters" )
p_box = gtk.HBox()
p_label = gtk.Label('Passphrase:')
p_label.show()
p_box.pack_start(p_label)
p_entry = gtk.Entry()
p_entry.show()
p_box.pack_start(p_entry)
p_box.show()
dialog.vbox.pack_start(p_box, False, True, 0)
dialog.show()
r = dialog.run()
passphrase = p_entry.get_text()
dialog.destroy()
if r==-6: exit(1)
if len(passphrase) < 20:
print len(passphrase)
passphrase = None
# disable password during recovery
# change_password_dialog(None, wallet)
wallet.passphrase = passphrase
run_settings_dialog( None, wallet, True)
dialog = gtk.MessageDialog(
parent = None,
flags = gtk.DIALOG_MODAL,
buttons = gtk.BUTTONS_CANCEL,
message_format = "Please wait..." )
dialog.show()
def recover_thread( wallet, dialog, password ):
wallet.recover( password )
wallet.save()
gobject.idle_add( dialog.destroy )
thread.start_new_thread( recover_thread, ( wallet, dialog, None ) ) # no password
r = dialog.run()
dialog.destroy()
if r==-6: exit(1)
def settings_dialog(wallet, is_recover):
dialog = gtk.MessageDialog(
parent = None,
flags = gtk.DIALOG_MODAL,
buttons = gtk.BUTTONS_OK_CANCEL,
message_format = "Please indicate the server, and the gap limit if you are recovering a lost wallet." if is_recover else '' )
if not is_recover:
dialog.get_image().hide()
dialog.set_title("settings")
pw = gtk.HBox()
if not is_recover:
pw_label = gtk.Label('Encryption: ')
pw_label.set_size_request(100,10)
pw_label.show()
pw.pack_start(pw_label,False, False, 10)
pw_button = gtk.Button( ('Yes' if wallet.use_encryption else 'No'))
pw_button.connect("clicked", change_password_dialog, wallet)
pw_button.show()
pw.pack_start(pw_button,False, False, 10)
pw.show()
gap = gtk.HBox()
gap_label = gtk.Label('Max. gap:')
gap_label.set_size_request(100,10)
gap_label.show()
gap.pack_start(gap_label,False, False, 10)
gap_entry = gtk.Entry()
gap_entry.set_text("%d"%wallet.gap_limit)
gap_entry.connect('changed', numbify, True)
gap_entry.show()
gap.pack_start(gap_entry,False,False, 10)
add_help_button(gap, 'The maximum gap that is allowed between unused addresses in your wallet. During wallet recovery, this parameter is used to decide when to stop the recovery process. If you increase this value, you will need to remember it in order to be able to recover your wallet from passphrase.')
gap.show()
host = gtk.HBox()
host_label = gtk.Label('Server:')
host_label.set_size_request(100,10)
host_label.show()
host.pack_start(host_label,False, False, 10)
host_entry = gtk.Entry()
host_entry.set_text(wallet.host+":%d"%wallet.port)
host_entry.show()
host.pack_start(host_entry,False,False, 10)
add_help_button(host, 'The name and port number of your Bitcoin server, separated by a colon. Example: ecdsa.org:50000')
host.show()
fee = gtk.HBox()
fee_entry = gtk.Entry()
if not is_recover:
fee_label = gtk.Label('Tx. fee:')
fee_label.set_size_request(100,10)
fee_label.show()
fee.pack_start(fee_label,False, False, 10)
fee_entry.set_text("%f"%(wallet.fee))
fee_entry.connect('changed', numbify, False)
fee_entry.show()
fee.pack_start(fee_entry,False,False, 10)
add_help_button(fee, 'Transaction fee. Recommended value:0.005')
fee.show()
vbox = dialog.vbox
vbox.pack_start(pw, False, False, 5)
vbox.pack_start(host, False,False, 5)
vbox.pack_start(gap, False,False, 5)
vbox.pack_start(fee, False, False, 5)
return dialog, gap_entry, host_entry, fee_entry
def run_settings_dialog( widget, wallet, is_recovery):
dialog, gap_entry, host_entry, fee_entry = settings_dialog(wallet, is_recovery)
dialog.show()
r = dialog.run()
gap = gap_entry.get_text()
hh = host_entry.get_text()
fee = fee_entry.get_text()
dialog.destroy()
if r==-6:
if is_recovery:
exit(1)
else:
return
try:
a, b = hh.split(':')
wallet.gap_limit = int(gap)
wallet.host = a
wallet.port = int(b)
wallet.fee = float(fee)
except:
pass
def show_message(message):
dialog = gtk.MessageDialog(
parent = None,
flags = gtk.DIALOG_MODAL,
buttons = gtk.BUTTONS_CLOSE,
message_format = message )
dialog.show()
dialog.run()
dialog.destroy()
def password_line(label):
password = gtk.HBox()
password_label = gtk.Label(label)
password_label.set_size_request(120,10)
password_label.show()
password.pack_start(password_label,False, False, 10)
password_entry = gtk.Entry()
password_entry.set_visibility(False)
password_entry.show()
password.pack_start(password_entry,False,False, 10)
password.show()
return password, password_entry
def password_dialog():
dialog = gtk.MessageDialog( None, gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
gtk.MESSAGE_QUESTION, gtk.BUTTONS_OK_CANCEL, "Your wallet is encrypted.")
dialog.get_image().set_visible(False)
current_pw, current_pw_entry = password_line('Password:')
current_pw_entry.connect("activate", lambda entry, dialog, response: dialog.response(response), dialog, gtk.RESPONSE_OK)
dialog.vbox.pack_start(current_pw, False, True, 0)
dialog.show()
result = dialog.run()
pw = current_pw_entry.get_text()
dialog.destroy()
if result: return pw
def change_password_dialog(button, wallet):
dialog = gtk.MessageDialog( None, gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
gtk.MESSAGE_QUESTION, gtk.BUTTONS_OK_CANCEL, 'Change password')
if wallet.use_encryption:
current_pw, current_pw_entry = password_line('Old password:')
dialog.vbox.pack_start(current_pw, False, True, 0)
password, password_entry = password_line('New password:')
dialog.vbox.pack_start(password, False, True, 5)
password2, password2_entry = password_line('Confirm password:')
dialog.vbox.pack_start(password2, False, True, 5)
dialog.show()
result = dialog.run()
password = current_pw_entry.get_text() if wallet.use_encryption else None
new_password = password_entry.get_text()
new_password2 = password2_entry.get_text()
dialog.destroy()
if result == 0:
return
try:
passphrase = wallet.pw_decode( wallet.passphrase, password)
private_keys = ast.literal_eval( wallet.pw_decode( wallet.private_keys, password) )
except:
show_message("sorry")
return
if new_password != new_password2:
show_message("passwords do not match")
return
wallet.use_encryption = (new_password != '')
wallet.passphrase = wallet.pw_encode( passphrase, new_password)
wallet.private_keys = wallet.pw_encode( repr( private_keys ), new_password)
wallet.save()
if button:
button.set_label('Yes' if wallet.use_encryption else 'No')
def add_help_button(hbox, message):
button = gtk.Button('?')
button.connect("clicked", lambda x: show_message(message))
button.show()
hbox.pack_start(button,False, False)
class MyWindow(gtk.Window): __gsignals__ = dict( mykeypress = (gobject.SIGNAL_RUN_LAST | gobject.SIGNAL_ACTION, None, (str,)) )
gobject.type_register(MyWindow)
gtk.binding_entry_add_signal(MyWindow, gtk.keysyms.W, gtk.gdk.CONTROL_MASK, 'mykeypress', str, 'ctrl+W')
gtk.binding_entry_add_signal(MyWindow, gtk.keysyms.Q, gtk.gdk.CONTROL_MASK, 'mykeypress', str, 'ctrl+Q')
class BitcoinGUI:
def __init__(self, wallet):
self.error = ''
self.wallet = wallet
self.update_time = 0
self.window = MyWindow(gtk.WINDOW_TOPLEVEL)
self.window.set_title(APP_NAME)
self.window.connect("destroy", gtk.main_quit)
self.window.set_border_width(0)
self.window.connect('mykeypress', gtk.main_quit)
self.window.set_default_size(650, 350)
vbox = gtk.VBox()
self.notebook = gtk.Notebook()
self.create_history_tab()
self.create_send_tab()
self.create_recv_tab()
self.create_book_tab()
#self.add_tab( make_settings_box( self.wallet, False), 'Preferences')
self.create_about_tab()
self.notebook.show()
vbox.pack_start(self.notebook, True, True, 2)
# status bar for balance, connection, blocks
self.status_bar = gtk.Statusbar()
vbox.pack_start(self.status_bar, False, False, 0)
self.status_image = gtk.Image()
self.status_image.set_from_stock(gtk.STOCK_YES, gtk.ICON_SIZE_MENU)
self.status_image.set_alignment(True, 0.5 )
self.status_image.show()
self.status_bar.pack_end(self.status_image,False,False)
settings_icon = gtk.Image()
settings_icon.set_from_stock(gtk.STOCK_PREFERENCES, gtk.ICON_SIZE_MENU)
settings_icon.set_alignment(True, False)
settings_icon.set_size_request(30,9 )
settings_icon.show()
prefs_button = gtk.Button()
prefs_button.connect("clicked", run_settings_dialog, self.wallet, False)
prefs_button.add(settings_icon)
prefs_button.set_tooltip_text("Settings")
prefs_button.show()
self.status_bar.pack_end(prefs_button,False,False)
self.window.add(vbox)
self.window.show_all()
self.context_id = self.status_bar.get_context_id("statusbar")
self.update_status_bar()
def update_status_bar_thread():
while True:
gobject.idle_add( self.update_status_bar )
time.sleep(0.5)
def update_wallet_thread():
import socket, traceback, sys
while True:
try:
self.wallet.new_session()
except:
self.error = "Not connected"
time.sleep(5)
continue
self.info.set_text( self.wallet.message)
while True:
try:
u = self.wallet.update()
except:
self.error = "Not connected"
print "error"
traceback.print_exc(file=sys.stdout)
break
self.update_time = time.time()
self.error = ''
if u:
self.wallet.save()
gobject.idle_add( self.update_history_tab )
time.sleep(5)
thread.start_new_thread(update_wallet_thread, ())
thread.start_new_thread(update_status_bar_thread, ())
self.notebook.set_current_page(0)
def add_tab(self, page, name):
tab_label = gtk.Label(name)
tab_label.show()
self.notebook.append_page(page, tab_label)
def create_send_tab(self):
page = vbox = gtk.VBox()
page.show()
payto = gtk.HBox()
payto_label = gtk.Label('Pay to:')
payto_label.set_size_request(100,10)
payto_label.show()
payto.pack_start(payto_label, False)
payto_entry = gtk.Entry()
payto_entry.set_size_request(350, 26)
payto_entry.show()
payto.pack_start(payto_entry, False)
vbox.pack_start(payto, False, False, 5)
label = gtk.HBox()
label_label = gtk.Label('Label:')
label_label.set_size_request(100,10)
label_label.show()
label.pack_start(label_label, False)
label_entry = gtk.Entry()
label_entry.set_size_request(350, 26)
label_entry.show()
label.pack_start(label_entry, False)
vbox.pack_start(label, False, False, 5)
amount = gtk.HBox()
amount_label = gtk.Label('Amount:')
amount_label.set_size_request(100,10)
amount_label.show()
amount.pack_start(amount_label, False)
amount_entry = gtk.Entry()
amount_entry.set_size_request(100, 26)
amount_entry.connect('changed', numbify)
amount_entry.show()
amount.pack_start(amount_entry, False)
vbox.pack_start(amount, False, False, 5)
button = gtk.Button("Send")
button.connect("clicked", self.do_send, (payto_entry, label_entry, amount_entry))
button.show()
amount.pack_start(button, False, False, 5)
self.payto_entry = payto_entry
self.payto_amount_entry = amount_entry
self.payto_label_entry = label_entry
self.add_tab(page, 'Send')
def create_about_tab(self):
page = gtk.VBox()
page.show()
self.info = gtk.Label('')
self.info.set_selectable(True)
page.pack_start(self.info)
#tv = gtk.TextView()
#tv.set_editable(False)
#tv.set_cursor_visible(False)
#page.pack_start(tv)
#self.info = tv.get_buffer()
self.add_tab(page, 'Board')
def do_send(self, w, data):
payto_entry, label_entry, amount_entry = data
label = label_entry.get_text()
to_address = payto_entry.get_text()
if not self.wallet.is_valid(to_address):
show_message( "invalid bitcoin address" )
return
try:
amount = float(amount_entry.get_text())
except:
show_message( "invalid amount" )
return
password = password_dialog() if self.wallet.use_encryption else None
status, msg = self.wallet.send( to_address, amount, label, password )
if status:
show_message( "payment sent.\n" + msg )
payto_entry.set_text("")
label_entry.set_text("")
amount_entry.set_text("")
else:
show_message( msg )
def treeview_key_press(self, treeview, event):
c = treeview.get_cursor()[0]
if event.keyval == gtk.keysyms.Up:
if c and c[0] == 0:
treeview.parent.grab_focus()
treeview.set_cursor((0,))
elif event.keyval == gtk.keysyms.Return and treeview == self.history_treeview:
tx_hash = self.history_list.get_value( self.history_list.get_iter(c), 0)
tx = self.wallet.tx_history.get(tx_hash)
# print "tx details:\n"+repr(tx)
inputs = '\n-'.join(tx['inputs'])
outputs = '\n-'.join(tx['outputs'])
msg = tx_hash + "\n\ninputs:\n-"+ inputs + "\noutputs:\n-"+ outputs + "\n"
show_message(msg)
return False
def create_history_tab(self):
self.history_list = gtk.ListStore(str, str, str, str, 'gboolean', str, str,str)
treeview = gtk.TreeView(model=self.history_list)
self.history_treeview = treeview
treeview.set_tooltip_column(7)
treeview.show()
treeview.connect('key-press-event', self.treeview_key_press)
tvcolumn = gtk.TreeViewColumn('tx_id')
treeview.append_column(tvcolumn)
cell = gtk.CellRendererText()
tvcolumn.pack_start(cell, False)
tvcolumn.add_attribute(cell, 'text', 0)
tvcolumn.set_visible(False)
tvcolumn = gtk.TreeViewColumn('')
treeview.append_column(tvcolumn)
cell = gtk.CellRendererPixbuf()
tvcolumn.pack_start(cell, False)
tvcolumn.set_attributes(cell, stock_id=1)
tvcolumn = gtk.TreeViewColumn('Date')
treeview.append_column(tvcolumn)
cell = gtk.CellRendererText()
tvcolumn.pack_start(cell, False)
tvcolumn.add_attribute(cell, 'text', 2)
tvcolumn = gtk.TreeViewColumn('Label')
treeview.append_column(tvcolumn)
cell = gtk.CellRendererText()
cell.set_property('foreground', 'grey')
cell.set_property('family', 'monospace')
cell.set_property('editable', True)
def edited_cb(cell, path, new_text, h_list):
tx = h_list.get_value( h_list.get_iter(path), 0)
self.wallet.labels[tx] = new_text
self.wallet.save()
self.update_history_tab()
cell.connect('edited', edited_cb, self.history_list)
def editing_started(cell, entry, path, h_list):
tx = h_list.get_value( h_list.get_iter(path), 0)
if not self.wallet.labels.get(tx): entry.set_text('')
cell.connect('editing-started', editing_started, self.history_list)
tvcolumn.set_expand(True)
tvcolumn.pack_start(cell, True)
tvcolumn.set_attributes(cell, text=3, foreground_set = 4)
tvcolumn = gtk.TreeViewColumn('Amount')
treeview.append_column(tvcolumn)
cell = gtk.CellRendererText()
cell.set_alignment(1, 0.5)
tvcolumn.pack_start(cell, False)
tvcolumn.add_attribute(cell, 'text', 5)
tvcolumn = gtk.TreeViewColumn('Balance')
treeview.append_column(tvcolumn)
cell = gtk.CellRendererText()
cell.set_alignment(1, 0.5)
tvcolumn.pack_start(cell, False)
tvcolumn.add_attribute(cell, 'text', 6)
tvcolumn = gtk.TreeViewColumn('Tooltip')
treeview.append_column(tvcolumn)
cell = gtk.CellRendererText()
tvcolumn.pack_start(cell, False)
tvcolumn.add_attribute(cell, 'text', 7)
tvcolumn.set_visible(False)
scroll = gtk.ScrolledWindow()
scroll.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
scroll.add(treeview)
self.add_tab(scroll, 'History')
self.update_history_tab()
def create_recv_tab(self):
self.recv_list = gtk.ListStore(str, str, str)
self.add_tab( self.make_address_list(True), 'Receive')
self.update_receiving_tab()
def create_book_tab(self):
self.addressbook_list = gtk.ListStore(str, str, str)
self.add_tab( self.make_address_list(False), 'Contacts')
self.update_sending_tab()
def make_address_list(self, is_recv):
liststore = self.recv_list if is_recv else self.addressbook_list
treeview = gtk.TreeView(model= liststore)
treeview.connect('key-press-event', self.treeview_key_press)
treeview.show()
tvcolumn = gtk.TreeViewColumn('Address')
treeview.append_column(tvcolumn)
cell = gtk.CellRendererText()
cell.set_property('family', 'monospace')
tvcolumn.pack_start(cell, True)
tvcolumn.add_attribute(cell, 'text', 0)
tvcolumn = gtk.TreeViewColumn('Label')
tvcolumn.set_expand(True)
treeview.append_column(tvcolumn)
cell = gtk.CellRendererText()
cell.set_property('editable', True)
def edited_cb2(cell, path, new_text, liststore):
address = liststore.get_value( liststore.get_iter(path), 0)
self.wallet.labels[address] = new_text
self.wallet.save()
self.wallet.update_tx_labels()
self.update_receiving_tab()
self.update_sending_tab()
self.update_history_tab()
cell.connect('edited', edited_cb2, liststore)
tvcolumn.pack_start(cell, True)
tvcolumn.add_attribute(cell, 'text', 1)
tvcolumn = gtk.TreeViewColumn('Tx')
treeview.append_column(tvcolumn)
cell = gtk.CellRendererText()
tvcolumn.pack_start(cell, True)
tvcolumn.add_attribute(cell, 'text', 2)
scroll = gtk.ScrolledWindow()
scroll.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
scroll.add(treeview)
hbox = gtk.HBox()
button = gtk.Button("New address")
button.connect("clicked", self.newaddress_dialog, is_recv)
button.show()
hbox.pack_start(button,False)
button = gtk.Button("Copy to clipboard")
def copy2clipboard(w, treeview, liststore):
path, col = treeview.get_cursor()
if path:
address = liststore.get_value( liststore.get_iter(path), 0)
c = gtk.clipboard_get()
c.set_text( address )
button.connect("clicked", copy2clipboard, treeview, liststore)
button.show()
hbox.pack_start(button,False)
if not is_recv:
button = gtk.Button("Pay to")
def payto(w, treeview, liststore):
path, col = treeview.get_cursor()
if path:
address = liststore.get_value( liststore.get_iter(path), 0)
self.payto_entry.set_text( address )
self.notebook.set_current_page(1)
self.payto_amount_entry.grab_focus()
button.connect("clicked", payto, treeview, liststore)
button.show()
hbox.pack_start(button,False)
vbox = gtk.VBox()
vbox.pack_start(scroll,True)
vbox.pack_start(hbox, False)
return vbox
def update_status_bar(self):
c, u = self.wallet.get_balance()
dt = time.time() - self.update_time
if dt < 15:
self.status_image.set_from_stock(gtk.STOCK_YES, gtk.ICON_SIZE_MENU)
self.status_image.set_tooltip_text("Connected to %s.\n%d blocks"%(self.wallet.host, self.wallet.blocks))
else:
self.status_image.set_from_stock(gtk.STOCK_NO, gtk.ICON_SIZE_MENU)
self.status_image.set_tooltip_text("Trying to contact %s.\n%d blocks"%(self.wallet.host, self.wallet.blocks))
text = "Balance: %s "%( format_satoshis(c) )
if u: text += "[+ %s unconfirmed]"%( format_satoshis(u) )
if self.error: text = self.error
self.status_bar.pop(self.context_id)
self.status_bar.push(self.context_id, text)
def update_receiving_tab(self):
self.recv_list.clear()
for address in self.wallet.addresses:
label = self.wallet.labels.get(address)
n = 0
h = self.wallet.history.get(address)
if h:
for item in h:
if not item['is_in'] : n=n+1
tx = "None" if n==0 else "%d"%n
self.recv_list.prepend((address, label, tx ))
def update_sending_tab(self):
# detect addresses that are not mine in history, add them here...
self.addressbook_list.clear()
for address in self.wallet.addressbook:
label = self.wallet.labels.get(address)
n = 0
for item in self.wallet.tx_history.values():
if address in item['outputs'] : n=n+1
tx = "None" if n==0 else "%d"%n
self.addressbook_list.append((address, label, tx))
def update_history_tab(self):
cursor = self.history_treeview.get_cursor()[0]
self.history_list.clear()
balance = 0
for tx in self.wallet.get_tx_history():
tx_hash = tx['tx_hash']
if tx['height']:
conf = self.wallet.blocks - tx['height'] + 1
time_str = datetime.datetime.fromtimestamp( tx['nTime']).isoformat(' ')[:-3]
conf_icon = gtk.STOCK_APPLY
else:
conf = 0
time_str = 'pending'
conf_icon = gtk.STOCK_EXECUTE
v = tx['value']
balance += v
label = self.wallet.labels.get(tx_hash)
is_default_label = (label == '') or (label is None)
if is_default_label: label = tx['default_label']
tooltip = tx_hash + "\n%d confirmations"%conf
self.history_list.prepend( [tx_hash, conf_icon, time_str, label, is_default_label,
('+' if v>0 else '') + format_satoshis(v), format_satoshis(balance), tooltip] )
if cursor: self.history_treeview.set_cursor( cursor )
def newaddress_dialog(self, w, is_recv):
if not is_recv:
title = "New sending address"
dialog = gtk.Dialog(title, parent=self.window,
flags=gtk.DIALOG_MODAL|gtk.DIALOG_NO_SEPARATOR,
buttons= ("cancel", 0, "ok",1) )
dialog.show()
label = gtk.HBox()
label_label = gtk.Label('Label:')
label_label.set_size_request(120,10)
label_label.show()
label.pack_start(label_label)
label_entry = gtk.Entry()
label_entry.show()
label.pack_start(label_entry)
label.show()
dialog.vbox.pack_start(label, False, True, 5)
address = gtk.HBox()
address_label = gtk.Label('Address:')
address_label.set_size_request(120,10)
address_label.show()
address.pack_start(address_label)
address_entry = gtk.Entry()
address_entry.show()
address.pack_start(address_entry)
address.show()
dialog.vbox.pack_start(address, False, True, 5)
result = dialog.run()
address = address_entry.get_text()
label = label_entry.get_text()
dialog.destroy()
if result == 1:
if self.wallet.is_valid(address):
self.wallet.addressbook.append(address)
if label: self.wallet.labels[address] = label
self.wallet.save()
self.update_sending_tab()
else:
errorDialog = gtk.MessageDialog(
parent=self.window,
flags=gtk.DIALOG_MODAL,
buttons= gtk.BUTTONS_CLOSE,
message_format = "Invalid address")
errorDialog.show()
errorDialog.run()
errorDialog.destroy()
else:
password = password_dialog() if self.wallet.use_encryption else None
success, ret = self.wallet.get_new_address(password)
if success:
address = ret
#if label: self.wallet.labels[address] = label
self.wallet.save()
self.update_receiving_tab()
else:
msg = ret
errorDialog = gtk.MessageDialog(
parent=self.window,
flags=gtk.DIALOG_MODAL,
buttons= gtk.BUTTONS_CLOSE,
message_format = msg)
errorDialog.show()
errorDialog.run()
errorDialog.destroy()
def main(self):
gtk.main()