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wallet.py
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wallet.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
import base64
import os
import re
import hashlib
import copy
import operator
import ast
import threading
import random
import aes
import Queue
import time
import math
from util import print_msg, print_error, format_satoshis
from bitcoin import *
from account import *
from transaction import Transaction
from plugins import run_hook
COINBASE_MATURITY = 100
DUST_THRESHOLD = 5430
# AES encryption
EncodeAES = lambda secret, s: base64.b64encode(aes.encryptData(secret,s))
DecodeAES = lambda secret, e: aes.decryptData(secret, base64.b64decode(e))
def pw_encode(s, password):
if password:
secret = Hash(password)
return EncodeAES(secret, s)
else:
return s
def pw_decode(s, password):
if password is not None:
secret = Hash(password)
try:
d = DecodeAES(secret, s)
except Exception:
raise Exception('Invalid password')
return d
else:
return s
from version import *
class WalletStorage:
def __init__(self, config):
self.lock = threading.Lock()
self.config = config
self.data = {}
self.file_exists = False
self.path = self.init_path(config)
print_error( "wallet path", self.path )
if self.path:
self.read(self.path)
def init_path(self, config):
"""Set the path of the wallet."""
# command line -w option
path = config.get('wallet_path')
if path:
return path
# path in config file
path = config.get('default_wallet_path')
if path:
return path
# default path
dirpath = os.path.join(config.path, "wallets")
if not os.path.exists(dirpath):
os.mkdir(dirpath)
new_path = os.path.join(config.path, "wallets", "default_wallet")
# default path in pre 1.9 versions
old_path = os.path.join(config.path, "electrum.dat")
if os.path.exists(old_path) and not os.path.exists(new_path):
os.rename(old_path, new_path)
return new_path
def read(self, path):
"""Read the contents of the wallet file."""
try:
with open(self.path, "r") as f:
data = f.read()
except IOError:
return
try:
d = ast.literal_eval( data ) #parse raw data from reading wallet file
except Exception:
raise IOError("Cannot read wallet file.")
self.data = d
self.file_exists = True
def get(self, key, default=None):
v = self.data.get(key)
if v is None:
v = default
return v
def put(self, key, value, save = True):
with self.lock:
if value is not None:
self.data[key] = value
else:
self.data.pop(key)
if save:
self.write()
def write(self):
s = repr(self.data)
f = open(self.path,"w")
f.write( s )
f.close()
if 'ANDROID_DATA' not in os.environ:
import stat
os.chmod(self.path,stat.S_IREAD | stat.S_IWRITE)
class NewWallet:
def __init__(self, storage):
self.storage = storage
self.electrum_version = ELECTRUM_VERSION
self.gap_limit_for_change = 3 # constant
# saved fields
self.seed_version = storage.get('seed_version', NEW_SEED_VERSION)
self.gap_limit = storage.get('gap_limit', 5)
self.use_change = storage.get('use_change',True)
self.use_encryption = storage.get('use_encryption', False)
self.seed = storage.get('seed', '') # encrypted
self.labels = storage.get('labels', {})
self.frozen_addresses = storage.get('frozen_addresses',[])
self.addressbook = storage.get('contacts', [])
self.imported_keys = storage.get('imported_keys',{})
self.history = storage.get('addr_history',{}) # address -> list(txid, height)
self.fee = int(storage.get('fee_per_kb',20000))
self.master_public_keys = storage.get('master_public_keys',{})
self.master_private_keys = storage.get('master_private_keys', {})
self.next_addresses = storage.get('next_addresses',{})
# This attribute is set when wallet.start_threads is called.
self.synchronizer = None
self.load_accounts()
self.transactions = {}
tx_list = self.storage.get('transactions',{})
for k,v in tx_list.items():
try:
tx = Transaction(v)
except Exception:
print_msg("Warning: Cannot deserialize transactions. skipping")
continue
self.add_extra_addresses(tx)
self.transactions[k] = tx
for h,tx in self.transactions.items():
if not self.check_new_tx(h, tx):
print_error("removing unreferenced tx", h)
self.transactions.pop(h)
# not saved
self.prevout_values = {} # my own transaction outputs
self.spent_outputs = []
# spv
self.verifier = None
# there is a difference between wallet.up_to_date and interface.is_up_to_date()
# interface.is_up_to_date() returns true when all requests have been answered and processed
# wallet.up_to_date is true when the wallet is synchronized (stronger requirement)
self.up_to_date = False
self.lock = threading.Lock()
self.transaction_lock = threading.Lock()
self.tx_event = threading.Event()
for tx_hash, tx in self.transactions.items():
self.update_tx_outputs(tx_hash)
def add_extra_addresses(self, tx):
h = tx.hash()
# find the address corresponding to pay-to-pubkey inputs
tx.add_extra_addresses(self.transactions)
for o in tx.d.get('outputs'):
if o.get('is_pubkey'):
for tx2 in self.transactions.values():
tx2.add_extra_addresses({h:tx})
def set_up_to_date(self,b):
with self.lock: self.up_to_date = b
def is_up_to_date(self):
with self.lock: return self.up_to_date
def update(self):
self.up_to_date = False
while not self.is_up_to_date():
time.sleep(0.1)
def import_key(self, sec, password):
# check password
seed = self.get_seed(password)
try:
address = address_from_private_key(sec)
except Exception:
raise Exception('Invalid private key')
if self.is_mine(address):
raise Exception('Address already in wallet')
# store the originally requested keypair into the imported keys table
self.imported_keys[address] = pw_encode(sec, password )
self.storage.put('imported_keys', self.imported_keys, True)
if self.synchronizer:
self.synchronizer.subscribe_to_addresses([address])
return address
def delete_imported_key(self, addr):
if addr in self.imported_keys:
self.imported_keys.pop(addr)
self.storage.put('imported_keys', self.imported_keys, True)
def make_seed(self):
import mnemonic, ecdsa
entropy = ecdsa.util.randrange( pow(2,160) )
nonce = 0
while True:
ss = "%040x"%(entropy+nonce)
s = hashlib.sha256(ss.decode('hex')).digest().encode('hex')
# we keep only 13 words, that's approximately 139 bits of entropy
words = mnemonic.mn_encode(s)[0:13]
seed = ' '.join(words)
if is_seed(seed):
break # this will remove 8 bits of entropy
nonce += 1
return seed
def init_seed(self, seed):
import mnemonic, unicodedata
if self.seed:
raise Exception("a seed exists")
self.seed_version = NEW_SEED_VERSION
if not seed:
self.seed = self.make_seed()
return
self.seed = unicodedata.normalize('NFC', unicode(seed.strip()))
def save_seed(self, password):
if password:
self.seed = pw_encode( self.seed, password)
self.use_encryption = True
self.storage.put('seed', self.seed, True)
self.storage.put('seed_version', self.seed_version, True)
self.storage.put('use_encryption', self.use_encryption,True)
self.create_accounts(password)
def create_watching_only_wallet(self, K0, c0):
cK0 = "" #FIXME
self.master_public_keys = {
"m/0'/": (c0, K0, cK0),
}
self.storage.put('master_public_keys', self.master_public_keys, True)
self.storage.put('seed_version', self.seed_version, True)
self.create_account('1of1','Main account')
def create_accounts(self, password):
seed = pw_decode(self.seed, password)
# create default account
self.create_master_keys('1of1', password)
self.create_account('1of1','Main account')
def create_master_keys(self, account_type, password):
master_k, master_c, master_K, master_cK = bip32_init(self.get_seed(password))
if account_type == '1of1':
k0, c0, K0, cK0 = bip32_private_derivation(master_k, master_c, "m/", "m/0'/")
self.master_public_keys["m/0'/"] = (c0, K0, cK0)
self.master_private_keys["m/0'/"] = pw_encode(k0, password)
elif account_type == '2of2':
k1, c1, K1, cK1 = bip32_private_derivation(master_k, master_c, "m/", "m/1'/")
k2, c2, K2, cK2 = bip32_private_derivation(master_k, master_c, "m/", "m/2'/")
self.master_public_keys["m/1'/"] = (c1, K1, cK1)
self.master_public_keys["m/2'/"] = (c2, K2, cK2)
self.master_private_keys["m/1'/"] = pw_encode(k1, password)
self.master_private_keys["m/2'/"] = pw_encode(k2, password)
elif account_type == '2of3':
k3, c3, K3, cK3 = bip32_private_derivation(master_k, master_c, "m/", "m/3'/")
k4, c4, K4, cK4 = bip32_private_derivation(master_k, master_c, "m/", "m/4'/")
k5, c5, K5, cK5 = bip32_private_derivation(master_k, master_c, "m/", "m/5'/")
self.master_public_keys["m/3'/"] = (c3, K3, cK3)
self.master_public_keys["m/4'/"] = (c4, K4, cK4)
self.master_public_keys["m/5'/"] = (c5, K5, cK5)
self.master_private_keys["m/3'/"] = pw_encode(k3, password)
self.master_private_keys["m/4'/"] = pw_encode(k4, password)
self.master_private_keys["m/5'/"] = pw_encode(k5, password)
self.storage.put('master_public_keys', self.master_public_keys, True)
self.storage.put('master_private_keys', self.master_private_keys, True)
def has_master_public_keys(self, account_type):
if account_type == '1of1':
return "m/0'/" in self.master_public_keys
elif account_type == '2of2':
return set(["m/1'/", "m/2'/"]) <= set(self.master_public_keys.keys())
elif account_type == '2of3':
return set(["m/3'/", "m/4'/", "m/5'/"]) <= set(self.master_public_keys.keys())
def find_root_by_master_key(self, c, K):
for key, v in self.master_public_keys.items():
if key == "m/":continue
cc, KK, _ = v
if (c == cc) and (K == KK):
return key
def deseed_root(self, seed, password):
# for safety, we ask the user to enter their seed
assert seed == self.get_seed(password)
self.seed = ''
self.storage.put('seed', '', True)
def deseed_branch(self, k):
# check that parent has no seed
# assert self.seed == ''
self.master_private_keys.pop(k)
self.storage.put('master_private_keys', self.master_private_keys, True)
def is_watching_only(self):
return (self.seed == '') and (self.master_private_keys == {})
def account_id(self, account_type, i):
if account_type == '1of1':
return "m/0'/%d"%i
elif account_type == '2of2':
return "m/1'/%d & m/2'/%d"%(i,i)
elif account_type == '2of3':
return "m/3'/%d & m/4'/%d & m/5'/%d"%(i,i,i)
else:
raise Exception('unknown account type')
def num_accounts(self, account_type):
keys = self.accounts.keys()
i = 0
while True:
account_id = self.account_id(account_type, i)
if account_id not in keys: break
i += 1
return i
def new_account_address(self, account_type = '1of1'):
i = self.num_accounts(account_type)
k = self.account_id(account_type,i)
addr = self.next_addresses.get(k)
if not addr:
account_id, account = self.next_account(account_type)
addr = account.first_address()
self.next_addresses[k] = addr
self.storage.put('next_addresses',self.next_addresses)
return k, addr
def next_account(self, account_type = '1of1'):
i = self.num_accounts(account_type)
account_id = self.account_id(account_type,i)
if account_type is '1of1':
master_c0, master_K0, _ = self.master_public_keys["m/0'/"]
c0, K0, cK0 = bip32_public_derivation(master_c0.decode('hex'), master_K0.decode('hex'), "m/0'/", "m/0'/%d"%i)
account = BIP32_Account({ 'c':c0, 'K':K0, 'cK':cK0 })
elif account_type == '2of2':
master_c1, master_K1, _ = self.master_public_keys["m/1'/"]
c1, K1, cK1 = bip32_public_derivation(master_c1.decode('hex'), master_K1.decode('hex'), "m/1'/", "m/1'/%d"%i)
master_c2, master_K2, _ = self.master_public_keys["m/2'/"]
c2, K2, cK2 = bip32_public_derivation(master_c2.decode('hex'), master_K2.decode('hex'), "m/2'/", "m/2'/%d"%i)
account = BIP32_Account_2of2({ 'c':c1, 'K':K1, 'cK':cK1, 'c2':c2, 'K2':K2, 'cK2':cK2 })
elif account_type == '2of3':
master_c3, master_K3, _ = self.master_public_keys["m/3'/"]
c3, K3, cK3 = bip32_public_derivation(master_c3.decode('hex'), master_K3.decode('hex'), "m/3'/", "m/3'/%d"%i)
master_c4, master_K4, _ = self.master_public_keys["m/4'/"]
c4, K4, cK4 = bip32_public_derivation(master_c4.decode('hex'), master_K4.decode('hex'), "m/4'/", "m/4'/%d"%i)
master_c5, master_K5, _ = self.master_public_keys["m/5'/"]
c5, K5, cK5 = bip32_public_derivation(master_c5.decode('hex'), master_K5.decode('hex'), "m/5'/", "m/5'/%d"%i)
account = BIP32_Account_2of3({ 'c':c3, 'K':K3, 'cK':cK3, 'c2':c4, 'K2':K4, 'cK2':cK4, 'c3':c5, 'K3':K5, 'cK3':cK5 })
return account_id, account
def set_label(self, name, text = None):
changed = False
old_text = self.labels.get(name)
if text:
if old_text != text:
self.labels[name] = text
changed = True
else:
if old_text:
self.labels.pop(name)
changed = True
if changed:
self.storage.put('labels', self.labels, True)
run_hook('set_label', name, text, changed)
return changed
def create_account(self, account_type = '1of1', name = None):
k, account = self.next_account(account_type)
if k in self.pending_accounts:
self.pending_accounts.pop(k)
self.storage.put('pending_accounts', self.pending_accounts)
self.accounts[k] = account
self.save_accounts()
if name:
self.set_label(k, name)
def save_accounts(self):
d = {}
for k, v in self.accounts.items():
d[k] = v.dump()
self.storage.put('accounts', d, True)
def load_accounts(self):
d = self.storage.get('accounts', {})
self.accounts = {}
for k, v in d.items():
if k == 0:
v['mpk'] = self.storage.get('master_public_key')
self.accounts[k] = OldAccount(v)
elif '&' in k:
self.accounts[k] = BIP32_Account_2of2(v)
else:
self.accounts[k] = BIP32_Account(v)
self.pending_accounts = self.storage.get('pending_accounts',{})
def delete_pending_account(self, k):
self.pending_accounts.pop(k)
self.storage.put('pending_accounts', self.pending_accounts)
def account_is_pending(self, k):
return k in self.pending_accounts
def create_pending_account(self, acct_type, name):
k, addr = self.new_account_address(acct_type)
self.set_label(k, name)
self.pending_accounts[k] = addr
self.storage.put('pending_accounts', self.pending_accounts)
def get_pending_accounts(self):
return self.pending_accounts.items()
def addresses(self, include_change = True, _next=True):
o = self.get_account_addresses(-1, include_change)
for a in self.accounts.keys():
o += self.get_account_addresses(a, include_change)
if _next:
for addr in self.next_addresses.values():
if addr not in o:
o += [addr]
return o
def is_mine(self, address):
return address in self.addresses(True)
def is_change(self, address):
if not self.is_mine(address): return False
if address in self.imported_keys.keys(): return False
acct, s = self.get_address_index(address)
if s is None: return False
return s[0] == 1
def get_master_public_key(self):
c, K, cK = self.storage.get("master_public_keys")["m/0'/"]
return repr((c, K))
def get_master_private_key(self, account, password):
k = self.master_private_keys.get(account)
if not k: return
master_k = pw_decode( k, password)
master_c, master_K, master_Kc = self.master_public_keys[account]
try:
K, Kc = get_pubkeys_from_secret(master_k.decode('hex'))
assert K.encode('hex') == master_K
except Exception:
raise Exception("Invalid password")
return master_k
def get_address_index(self, address):
if address in self.imported_keys.keys():
return -1, None
for account in self.accounts.keys():
for for_change in [0,1]:
addresses = self.accounts[account].get_addresses(for_change)
for addr in addresses:
if address == addr:
return account, (for_change, addresses.index(addr))
for k,v in self.next_addresses.items():
if v == address:
return k, (0,0)
raise Exception("Address not found", address)
def getpubkeys(self, addr):
assert is_valid(addr) and self.is_mine(addr)
account, sequence = self.get_address_index(addr)
if account != -1:
a = self.accounts[account]
return a.get_pubkeys( sequence )
def get_roots(self, account):
roots = []
for a in account.split('&'):
s = a.strip()
m = re.match("(m/\d+'/)(\d+)", s)
roots.append( m.group(1) )
return roots
def is_seeded(self, account):
if type(account) is int:
return self.seed is not None
for root in self.get_roots(account):
if root not in self.master_private_keys.keys():
return False
return True
def rebase_sequence(self, account, sequence):
c, i = sequence
dd = []
for a in account.split('&'):
s = a.strip()
m = re.match("(m/\d+'/)(\d+)", s)
root = m.group(1)
num = int(m.group(2))
dd.append( (root, [num,c,i] ) )
return dd
def get_keyID(self, account, sequence):
if account == 0:
a, b = sequence
mpk = self.storage.get('master_public_key')
return 'old(%s,%d,%d)'%(mpk,a,b)
rs = self.rebase_sequence(account, sequence)
dd = []
for root, public_sequence in rs:
c, K, cK = self.master_public_keys[root]
s = '/' + '/'.join( map(lambda x:str(x), public_sequence) )
dd.append( 'bip32(%s,%s,%s)'%(c, cK, s) )
return '&'.join(dd)
def get_seed(self, password):
s = pw_decode(self.seed, password)
seed = mnemonic_to_seed(s,'').encode('hex')
return seed
def get_mnemonic(self, password):
return pw_decode(self.seed, password)
def get_private_key(self, address, password):
if self.is_watching_only():
return []
# first check the provided password
seed = self.get_seed(password)
out = []
if address in self.imported_keys.keys():
out.append( pw_decode( self.imported_keys[address], password ) )
else:
account, sequence = self.get_address_index(address)
if account == 0:
pk = self.accounts[account].get_private_key(seed, sequence)
out.append(pk)
return out
# assert address == self.accounts[account].get_address(*sequence)
rs = self.rebase_sequence( account, sequence)
for root, public_sequence in rs:
if root not in self.master_private_keys.keys(): continue
master_k = self.get_master_private_key(root, password)
master_c, _, _ = self.master_public_keys[root]
pk = bip32_private_key( public_sequence, master_k.decode('hex'), master_c.decode('hex'))
out.append(pk)
return out
def add_keypairs_from_wallet(self, tx, keypairs, password):
for txin in tx.inputs:
address = txin['address']
if not self.is_mine(address):
continue
private_keys = self.get_private_key(address, password)
for sec in private_keys:
pubkey = public_key_from_private_key(sec)
keypairs[ pubkey ] = sec
if address in self.imported_keys.keys():
txin['redeemPubkey'] = pubkey
def add_keypairs_from_KeyID(self, tx, keypairs, password):
# first check the provided password
seed = self.get_seed(password)
for txin in tx.inputs:
keyid = txin.get('KeyID')
if keyid:
roots = []
for s in keyid.split('&'):
m = re.match("bip32\(([0-9a-f]+),([0-9a-f]+),(/\d+/\d+/\d+)", s)
if not m: continue
c = m.group(1)
K = m.group(2)
sequence = m.group(3)
root = self.find_root_by_master_key(c,K)
if not root: continue
sequence = map(lambda x:int(x), sequence.strip('/').split('/'))
root = root + '%d'%sequence[0]
sequence = sequence[1:]
roots.append((root,sequence))
account_id = " & ".join( map(lambda x:x[0], roots) )
account = self.accounts.get(account_id)
if not account: continue
addr = account.get_address(*sequence)
txin['address'] = addr # fixme: side effect
pk = self.get_private_key(addr, password)
for sec in pk:
pubkey = public_key_from_private_key(sec)
keypairs[pubkey] = sec
def signrawtransaction(self, tx, input_info, private_keys, password):
# check that the password is correct
seed = self.get_seed(password)
# add input info
tx.add_input_info(input_info)
# add redeem script for coins that are in the wallet
# FIXME: add redeemPubkey too!
try:
unspent_coins = self.get_unspent_coins()
except:
# an exception may be raised is the wallet is not synchronized
unspent_coins = []
for txin in tx.inputs:
for item in unspent_coins:
if txin['prevout_hash'] == item['prevout_hash'] and txin['prevout_n'] == item['prevout_n']:
print_error( "tx input is in unspent coins" )
txin['scriptPubKey'] = item['scriptPubKey']
account, sequence = self.get_address_index(item['address'])
if account != -1:
txin['redeemScript'] = self.accounts[account].redeem_script(sequence)
print_error("added redeemScript", txin['redeemScript'])
break
# build a list of public/private keys
keypairs = {}
# add private keys from parameter
for sec in private_keys:
pubkey = public_key_from_private_key(sec)
keypairs[ pubkey ] = sec
# add private_keys from KeyID
self.add_keypairs_from_KeyID(tx, keypairs, password)
# add private keys from wallet
self.add_keypairs_from_wallet(tx, keypairs, password)
self.sign_transaction(tx, keypairs, password)
def sign_message(self, address, message, password):
keys = self.get_private_key(address, password)
assert len(keys) == 1
sec = keys[0]
key = regenerate_key(sec)
compressed = is_compressed(sec)
return key.sign_message(message, compressed, address)
def decrypt_message(self, pubkey, message, password):
address = public_key_to_bc_address(pubkey.decode('hex'))
keys = self.get_private_key(address, password)
secret = keys[0]
ec = regenerate_key(secret)
decrypted = ec.decrypt_message(message)
return decrypted[0]
def change_gap_limit(self, value):
if value >= self.gap_limit:
self.gap_limit = value
self.storage.put('gap_limit', self.gap_limit, True)
#self.interface.poke('synchronizer')
return True
elif value >= self.min_acceptable_gap():
for key, account in self.accounts.items():
addresses = account[0]
k = self.num_unused_trailing_addresses(addresses)
n = len(addresses) - k + value
addresses = addresses[0:n]
self.accounts[key][0] = addresses
self.gap_limit = value
self.storage.put('gap_limit', self.gap_limit, True)
self.save_accounts()
return True
else:
return False
def num_unused_trailing_addresses(self, addresses):
k = 0
for a in addresses[::-1]:
if self.history.get(a):break
k = k + 1
return k
def min_acceptable_gap(self):
# fixme: this assumes wallet is synchronized
n = 0
nmax = 0
for account in self.accounts.values():
addresses = account.get_addresses(0)
k = self.num_unused_trailing_addresses(addresses)
for a in addresses[0:-k]:
if self.history.get(a):
n = 0
else:
n += 1
if n > nmax: nmax = n
return nmax + 1
def address_is_old(self, address):
age = -1
h = self.history.get(address, [])
if h == ['*']:
return True
for tx_hash, tx_height in h:
if tx_height == 0:
tx_age = 0
else:
tx_age = self.network.get_local_height() - tx_height + 1
if tx_age > age:
age = tx_age
return age > 2
def synchronize_sequence(self, account, for_change):
limit = self.gap_limit_for_change if for_change else self.gap_limit
new_addresses = []
while True:
addresses = account.get_addresses(for_change)
if len(addresses) < limit:
address = account.create_new_address(for_change)
self.history[address] = []
new_addresses.append( address )
continue
if map( lambda a: self.address_is_old(a), addresses[-limit:] ) == limit*[False]:
break
else:
address = account.create_new_address(for_change)
self.history[address] = []
new_addresses.append( address )
return new_addresses
def create_pending_accounts(self):
for account_type in ['1of1','2of2','2of3']:
if not self.has_master_public_keys(account_type):
continue
k, a = self.new_account_address(account_type)
if self.address_is_old(a):
print_error( "creating account", a )
self.create_account(account_type)
self.next_addresses.pop(k)
def synchronize_account(self, account):
new = []
new += self.synchronize_sequence(account, 0)
new += self.synchronize_sequence(account, 1)
return new
def synchronize(self):
if self.master_public_keys:
self.create_pending_accounts()
new = []
for account in self.accounts.values():
new += self.synchronize_account(account)
if new:
self.save_accounts()
self.storage.put('addr_history', self.history, True)
return new
def is_found(self):
return self.history.values() != [[]] * len(self.history)
def add_contact(self, address, label=None):
self.addressbook.append(address)
self.storage.put('contacts', self.addressbook, True)
if label:
self.set_label(address, label)
def delete_contact(self, addr):
if addr in self.addressbook:
self.addressbook.remove(addr)
self.storage.put('addressbook', self.addressbook, True)
def fill_addressbook(self):
for tx_hash, tx in self.transactions.items():
is_relevant, is_send, _, _ = self.get_tx_value(tx)
if is_send:
for addr, v in tx.outputs:
if not self.is_mine(addr) and addr not in self.addressbook:
self.addressbook.append(addr)
# redo labels
# self.update_tx_labels()
def get_num_tx(self, address):
n = 0
for tx in self.transactions.values():
if address in map(lambda x:x[0], tx.outputs): n += 1
return n
def get_address_flags(self, addr):
flags = "C" if self.is_change(addr) else "I" if addr in self.imported_keys.keys() else "-"
flags += "F" if addr in self.frozen_addresses else "-"
return flags
def get_tx_value(self, tx, account=None):
domain = self.get_account_addresses(account)
return tx.get_value(domain, self.prevout_values)
def update_tx_outputs(self, tx_hash):
tx = self.transactions.get(tx_hash)
for i, (addr, value) in enumerate(tx.outputs):
key = tx_hash+ ':%d'%i
self.prevout_values[key] = value
for item in tx.inputs:
if self.is_mine(item.get('address')):
key = item['prevout_hash'] + ':%d'%item['prevout_n']
self.spent_outputs.append(key)
def get_addr_balance(self, address):
assert self.is_mine(address)
h = self.history.get(address,[])
if h == ['*']: return 0,0
c = u = 0
received_coins = [] # list of coins received at address
for tx_hash, tx_height in h:
tx = self.transactions.get(tx_hash)
if not tx: continue
for i, (addr, value) in enumerate(tx.outputs):
if addr == address:
key = tx_hash + ':%d'%i
received_coins.append(key)
for tx_hash, tx_height in h:
tx = self.transactions.get(tx_hash)
if not tx: continue
v = 0
for item in tx.inputs:
addr = item.get('address')
if addr == address:
key = item['prevout_hash'] + ':%d'%item['prevout_n']
value = self.prevout_values.get( key )
if key in received_coins:
v -= value
for i, (addr, value) in enumerate(tx.outputs):
key = tx_hash + ':%d'%i
if addr == address: