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electrum
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move synchronizer class in its own file. abstract wallet class.

283
ThomasV 11 years ago
parent
42a5454bd8
commit
7e0711f6ec
3 changed files with 233 additions and 199 deletions
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  1. 195
      lib/synchronizer.py
  2. 236
      lib/wallet.py
  3. 1
      setup.py

195
lib/synchronizer.py
View File

@ -0,0 +1,195 @@
#!/usr/bin/env python
#
# Electrum - lightweight Bitcoin client
# Copyright (C) 2014 Thomas Voegtlin
#
# 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 threading
import Queue
import bitcoin
from util import print_error
from transaction import Transaction
class WalletSynchronizer(threading.Thread):
def __init__(self, wallet, network):
threading.Thread.__init__(self)
self.daemon = True
self.wallet = wallet
self.network = network
self.was_updated = True
self.running = False
self.lock = threading.Lock()
self.queue = Queue.Queue()
def stop(self):
with self.lock: self.running = False
def is_running(self):
with self.lock: return self.running
def subscribe_to_addresses(self, addresses):
messages = []
for addr in addresses:
messages.append(('blockchain.address.subscribe', [addr]))
self.network.subscribe( messages, lambda i,r: self.queue.put(r))
def run(self):
with self.lock:
self.running = True
while self.is_running():
if not self.network.is_connected():
self.network.wait_until_connected()
self.run_interface()
def run_interface(self):
print_error("synchronizer: connected to", self.network.main_server())
requested_tx = []
missing_tx = []
requested_histories = {}
# request any missing transactions
for history in self.wallet.history.values():
if history == ['*']: continue
for tx_hash, tx_height in history:
if self.wallet.transactions.get(tx_hash) is None and (tx_hash, tx_height) not in missing_tx:
missing_tx.append( (tx_hash, tx_height) )
if missing_tx:
print_error("missing tx", missing_tx)
# subscriptions
self.subscribe_to_addresses(self.wallet.addresses(True))
while self.is_running():
# 1. create new addresses
new_addresses = self.wallet.synchronize()
# request missing addresses
if new_addresses:
self.subscribe_to_addresses(new_addresses)
# request missing transactions
for tx_hash, tx_height in missing_tx:
if (tx_hash, tx_height) not in requested_tx:
self.network.send([ ('blockchain.transaction.get',[tx_hash, tx_height]) ], lambda i,r: self.queue.put(r))
requested_tx.append( (tx_hash, tx_height) )
missing_tx = []
# detect if situation has changed
if self.network.is_up_to_date() and self.queue.empty():
if not self.wallet.is_up_to_date():
self.wallet.set_up_to_date(True)
self.was_updated = True
else:
if self.wallet.is_up_to_date():
self.wallet.set_up_to_date(False)
self.was_updated = True
if self.was_updated:
self.network.trigger_callback('updated')
self.was_updated = False
# 2. get a response
try:
r = self.queue.get(block=True, timeout=1)
except Queue.Empty:
continue
# see if it changed
#if interface != self.network.interface:
# break
if not r:
continue
# 3. handle response
method = r['method']
params = r['params']
result = r.get('result')
error = r.get('error')
if error:
print "error", r
continue
if method == 'blockchain.address.subscribe':
addr = params[0]
if self.wallet.get_status(self.wallet.get_history(addr)) != result:
if requested_histories.get(addr) is None:
self.network.send([('blockchain.address.get_history', [addr])], lambda i,r:self.queue.put(r))
requested_histories[addr] = result
elif method == 'blockchain.address.get_history':
addr = params[0]
print_error("receiving history", addr, result)
if result == ['*']:
assert requested_histories.pop(addr) == '*'
self.wallet.receive_history_callback(addr, result)
else:
hist = []
# check that txids are unique
txids = []
for item in result:
tx_hash = item['tx_hash']
if tx_hash not in txids:
txids.append(tx_hash)
hist.append( (tx_hash, item['height']) )
if len(hist) != len(result):
raise Exception("error: server sent history with non-unique txid", result)
# check that the status corresponds to what was announced
rs = requested_histories.pop(addr)
if self.wallet.get_status(hist) != rs:
raise Exception("error: status mismatch: %s"%addr)
# store received history
self.wallet.receive_history_callback(addr, hist)
# request transactions that we don't have
for tx_hash, tx_height in hist:
if self.wallet.transactions.get(tx_hash) is None:
if (tx_hash, tx_height) not in requested_tx and (tx_hash, tx_height) not in missing_tx:
missing_tx.append( (tx_hash, tx_height) )
elif method == 'blockchain.transaction.get':
tx_hash = params[0]
tx_height = params[1]
assert tx_hash == bitcoin.hash_encode(bitcoin.Hash(result.decode('hex')))
tx = Transaction(result)
self.wallet.receive_tx_callback(tx_hash, tx, tx_height)
self.was_updated = True
requested_tx.remove( (tx_hash, tx_height) )
print_error("received tx:", tx_hash, len(tx.raw))
else:
print_error("Error: Unknown message:" + method + ", " + repr(params) + ", " + repr(result) )
if self.was_updated and not requested_tx:
self.network.trigger_callback('updated')
# Updated gets called too many times from other places as well; if we use that signal we get the notification three times
self.network.trigger_callback("new_transaction")
self.was_updated = False

236
lib/wallet.py
View File

@ -37,6 +37,7 @@ from account import *
from transaction import Transaction
from plugins import run_hook
import bitcoin
from synchronizer import WalletSynchronizer
COINBASE_MATURITY = 100
DUST_THRESHOLD = 5430
@ -156,17 +157,17 @@ class WalletStorage:
class NewWallet:
class Abstract_Wallet:
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)
@ -279,35 +280,13 @@ class NewWallet:
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_new_seed(seed):
break # this will remove 8 bits of entropy
nonce += 1
return seed
def prepare_seed(self, seed):
import unicodedata
return NEW_SEED_VERSION, unicodedata.normalize('NFC', unicode(seed.strip()))
def add_seed(self, seed, password):
if self.seed:
raise Exception("a seed exists")
@ -1483,10 +1462,10 @@ class NewWallet:
class Imported_Wallet(NewWallet):
class Imported_Wallet(Abstract_Wallet):
def __init__(self, storage):
NewWallet.__init__(self, storage)
Abstract_Wallet.__init__(self, storage)
def is_watching_only(self):
n = self.imported_keys.values()
@ -1494,6 +1473,34 @@ class Imported_Wallet(NewWallet):
class NewWallet(Abstract_Wallet):
"""class for BIP32 wallet"""
def __init__(self, storage):
Abstract_Wallet.__init__(self, storage)
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_new_seed(seed):
break # this will remove 8 bits of entropy
nonce += 1
return seed
def prepare_seed(self, seed):
import unicodedata
return NEW_SEED_VERSION, unicodedata.normalize('NFC', unicode(seed.strip()))
class Wallet_2of2(NewWallet):
def __init__(self, storage):
@ -1527,7 +1534,7 @@ class Wallet_2of2(NewWallet):
class Wallet_2of3(Wallet_2of2):
def __init__(self, storage):
NewWallet.__init__(self, storage)
Wallet_2of2.__init__(self, storage)
self.storage.put('wallet_type', '2of3', True)
def create_account(self):
@ -1555,179 +1562,10 @@ class Wallet_2of3(Wallet_2of2):
return 'create_2of3_3'
class WalletSynchronizer(threading.Thread):
def __init__(self, wallet, network):
threading.Thread.__init__(self)
self.daemon = True
self.wallet = wallet
self.network = network
self.was_updated = True
self.running = False
self.lock = threading.Lock()
self.queue = Queue.Queue()
def stop(self):
with self.lock: self.running = False
def is_running(self):
with self.lock: return self.running
def subscribe_to_addresses(self, addresses):
messages = []
for addr in addresses:
messages.append(('blockchain.address.subscribe', [addr]))
self.network.subscribe( messages, lambda i,r: self.queue.put(r))
def run(self):
with self.lock:
self.running = True
while self.is_running():
if not self.network.is_connected():
self.network.wait_until_connected()
self.run_interface()
def run_interface(self):
print_error("synchronizer: connected to", self.network.main_server())
requested_tx = []
missing_tx = []
requested_histories = {}
# request any missing transactions
for history in self.wallet.history.values():
if history == ['*']: continue
for tx_hash, tx_height in history:
if self.wallet.transactions.get(tx_hash) is None and (tx_hash, tx_height) not in missing_tx:
missing_tx.append( (tx_hash, tx_height) )
if missing_tx:
print_error("missing tx", missing_tx)
# subscriptions
self.subscribe_to_addresses(self.wallet.addresses(True))
while self.is_running():
# 1. create new addresses
new_addresses = self.wallet.synchronize()
# request missing addresses
if new_addresses:
self.subscribe_to_addresses(new_addresses)
# request missing transactions
for tx_hash, tx_height in missing_tx:
if (tx_hash, tx_height) not in requested_tx:
self.network.send([ ('blockchain.transaction.get',[tx_hash, tx_height]) ], lambda i,r: self.queue.put(r))
requested_tx.append( (tx_hash, tx_height) )
missing_tx = []
# detect if situation has changed
if self.network.is_up_to_date() and self.queue.empty():
if not self.wallet.is_up_to_date():
self.wallet.set_up_to_date(True)
self.was_updated = True
else:
if self.wallet.is_up_to_date():
self.wallet.set_up_to_date(False)
self.was_updated = True
if self.was_updated:
self.network.trigger_callback('updated')
self.was_updated = False
# 2. get a response
try:
r = self.queue.get(block=True, timeout=1)
except Queue.Empty:
continue
# see if it changed
#if interface != self.network.interface:
# break
if not r:
continue
# 3. handle response
method = r['method']
params = r['params']
result = r.get('result')
error = r.get('error')
if error:
print "error", r
continue
if method == 'blockchain.address.subscribe':
addr = params[0]
if self.wallet.get_status(self.wallet.get_history(addr)) != result:
if requested_histories.get(addr) is None:
self.network.send([('blockchain.address.get_history', [addr])], lambda i,r:self.queue.put(r))
requested_histories[addr] = result
elif method == 'blockchain.address.get_history':
addr = params[0]
print_error("receiving history", addr, result)
if result == ['*']:
assert requested_histories.pop(addr) == '*'
self.wallet.receive_history_callback(addr, result)
else:
hist = []
# check that txids are unique
txids = []
for item in result:
tx_hash = item['tx_hash']
if tx_hash not in txids:
txids.append(tx_hash)
hist.append( (tx_hash, item['height']) )
if len(hist) != len(result):
raise Exception("error: server sent history with non-unique txid", result)
# check that the status corresponds to what was announced
rs = requested_histories.pop(addr)
if self.wallet.get_status(hist) != rs:
raise Exception("error: status mismatch: %s"%addr)
# store received history
self.wallet.receive_history_callback(addr, hist)
# request transactions that we don't have
for tx_hash, tx_height in hist:
if self.wallet.transactions.get(tx_hash) is None:
if (tx_hash, tx_height) not in requested_tx and (tx_hash, tx_height) not in missing_tx:
missing_tx.append( (tx_hash, tx_height) )
elif method == 'blockchain.transaction.get':
tx_hash = params[0]
tx_height = params[1]
assert tx_hash == hash_encode(Hash(result.decode('hex')))
tx = Transaction(result)
self.wallet.receive_tx_callback(tx_hash, tx, tx_height)
self.was_updated = True
requested_tx.remove( (tx_hash, tx_height) )
print_error("received tx:", tx_hash, len(tx.raw))
else:
print_error("Error: Unknown message:" + method + ", " + repr(params) + ", " + repr(result) )
if self.was_updated and not requested_tx:
self.network.trigger_callback('updated')
# Updated gets called too many times from other places as well; if we use that signal we get the notification three times
self.network.trigger_callback("new_transaction")
self.was_updated = False
class OldWallet(NewWallet):
class OldWallet(Abstract_Wallet):
def can_create_accounts(self):
return False

1
setup.py
View File

@ -80,6 +80,7 @@ setup(
'electrum.pyqrnative',
'electrum.simple_config',
'electrum.socks',
'electrum.synchronizer',
'electrum.transaction',
'electrum.util',
'electrum.verifier',

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