import socket
import requests
import threading
import hashlib
import json
import sys
import traceback
from functools import partial
try:
import PyQt4
except Exception:
sys.exit("Error: Could not import PyQt4 on Linux systems, you may try 'sudo apt-get install python-qt4'")
from PyQt4.QtGui import *
from PyQt4.QtCore import *
import PyQt4.QtCore as QtCore
import PyQt4.QtGui as QtGui
import aes
import base64
import electrum
from electrum.plugins import BasePlugin, hook
from electrum.i18n import _
from electrum_gui.qt import HelpButton, EnterButton
from electrum_gui.qt.util import ThreadedButton, Buttons, CancelButton, OkButton
class Plugin(BasePlugin):
def __init__(self, parent, config, name):
BasePlugin.__init__(self, parent, config, name)
self.target_host = 'sync.bytesized-hosting.com:9090'
self.wallets = {}
self.obj = QObject()
self.obj.connect(self.obj, SIGNAL('labels:pulled'), self.on_pulled)
def on_new_window(self, window):
wallet = window.wallet
nonce = self.get_nonce(wallet)
self.print_error("wallet", wallet.basename(), "nonce is", nonce)
mpk = ''.join(sorted(wallet.get_master_public_keys().values()))
if not mpk:
return
password = hashlib.sha1(mpk).digest().encode('hex')[:32]
iv = hashlib.sha256(password).digest()[:16]
wallet_id = hashlib.sha256(mpk).digest().encode('hex')
self.wallets[wallet] = (password, iv, wallet_id)
# If there is an auth token we can try to actually start syncing
t = threading.Thread(target=self.pull_thread, args=(window, False))
t.setDaemon(True)
t.start()
def version(self):
return "0.0.1"
def encode(self, wallet, msg):
password, iv, wallet_id = self.wallets[wallet]
encrypted = electrum.bitcoin.aes_encrypt_with_iv(password, iv,
msg.encode('utf8'))
return base64.b64encode(encrypted)
def decode(self, wallet, message):
password, iv, wallet_id = self.wallets[wallet]
decoded = base64.b64decode(message)
decrypted = electrum.bitcoin.aes_decrypt_with_iv(password, iv, decoded)
return decrypted.decode('utf8')
def get_nonce(self, wallet):
# nonce is the nonce to be used with the next change
nonce = wallet.storage.get('wallet_nonce')
if nonce is None:
nonce = 1
self.set_nonce(wallet, nonce)
return nonce
def set_nonce(self, wallet, nonce):
self.print_error("set", wallet.basename(), "nonce to", nonce)
wallet.storage.put("wallet_nonce", nonce, True)
def requires_settings(self):
return True
@hook
def set_label(self, wallet, item, label, changed):
if not changed or not wallet in self.wallets:
return
nonce = self.get_nonce(wallet)
wallet_id = self.wallets[wallet][2]
bundle = {"walletId": wallet_id,
"walletNonce": nonce,
"externalId": self.encode(wallet, item),
"encryptedLabel": self.encode(wallet, label)}
t = threading.Thread(target=self.do_request,
args=["POST", "/label", False, bundle])
t.setDaemon(True)
t.start()
self.set_nonce(wallet, nonce + 1)
def settings_widget(self, window):
return EnterButton(_('Settings'),
partial(self.settings_dialog, window))
def settings_dialog(self, window):
print "window:", window
d = QDialog(window)
vbox = QVBoxLayout(d)
layout = QGridLayout()
vbox.addLayout(layout)
layout.addWidget(QLabel("Label sync options: "),2,0)
self.upload = ThreadedButton("Force upload",
partial(self.push_thread, window),
self.done_processing)
layout.addWidget(self.upload, 2, 1)
self.download = ThreadedButton("Force download",
partial(self.pull_thread, window, True),
self.done_processing)
layout.addWidget(self.download, 2, 2)
self.accept = OkButton(d, _("Done"))
vbox.addLayout(Buttons(CancelButton(d), self.accept))
if d.exec_():
return True
else:
return False
def on_pulled(self, window, nonce):
wallet = window.wallet
wallet.storage.put('labels', wallet.labels, False)
self.set_nonce(wallet, nonce)
window.labelsChanged.emit()
def done_processing(self):
QMessageBox.information(None, _("Labels synchronised"),
_("Your labels have been synchronised."))
def do_request(self, method, url = "/labels", is_batch=False, data=None):
url = 'https://' + self.target_host + url
kwargs = {'headers': {}}
if method == 'GET' and data:
kwargs['params'] = data
elif method == 'POST' and data:
kwargs['data'] = json.dumps(data)
kwargs['headers']['Content-Type'] = 'application/json'
response = requests.request(method, url, **kwargs)
if response.status_code != 200:
raise BaseException(response.status_code, response.text)
response = response.json()
if "error" in response:
raise BaseException(response["error"])
return response
def push_thread(self, window):
wallet = window.wallet
wallet_id = self.wallets[wallet][2]
bundle = {"labels": [],
"walletId": wallet_id,
"walletNonce": self.get_nonce(wallet)}
for key, value in wallet.labels.iteritems():
try:
encoded_key = self.encode(wallet, key)
encoded_value = self.encode(wallet, value)
except:
self.print_error('cannot encode', repr(key), repr(value))
continue
bundle["labels"].append({'encryptedLabel': encoded_value,
'externalId': encoded_key})
self.do_request("POST", "/labels", True, bundle)
def pull_thread(self, window, force):
wallet = window.wallet
wallet_id = self.wallets[wallet][2]
nonce = 1 if force else self.get_nonce(wallet) - 1
self.print_error("asking for labels since nonce", nonce)
try:
response = self.do_request("GET", ("/labels/since/%d/for/%s" % (nonce, wallet_id) ))
if response["labels"] is None:
return
result = {}
for label in response["labels"]:
try:
key = self.decode(wallet, label["externalId"])
value = self.decode(wallet, label["encryptedLabel"])
except:
continue
try:
json.dumps(key)
json.dumps(value)
except:
self.print_error('error: no json', key)
continue
result[key] = value
for key, value in result.items():
if force or not wallet.labels.get(key):
wallet.labels[key] = value
self.print_error("received %d labels" % len(response))
self.obj.emit(SIGNAL('labels:pulled'), window,
response["nonce"] + 1)
except Exception as e:
traceback.print_exc(file=sys.stderr)
self.print_error("could not retrieve labels")