200 lines
7.2 KiB
Python
200 lines
7.2 KiB
Python
import socket
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import requests
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import threading
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import hashlib
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import json
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try:
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import PyQt4
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except Exception:
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sys.exit("Error: Could not import PyQt4 on Linux systems, you may try 'sudo apt-get install python-qt4'")
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from PyQt4.QtGui import *
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from PyQt4.QtCore import *
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import PyQt4.QtCore as QtCore
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import PyQt4.QtGui as QtGui
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import aes
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import base64
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import electrum
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from electrum.plugins import BasePlugin, hook
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from electrum.i18n import _
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from electrum_gui.qt import HelpButton, EnterButton
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from electrum_gui.qt.util import ThreadedButton, Buttons, CancelButton, OkButton
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class Plugin(BasePlugin):
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target_host = 'sync.bysh.me:8080'
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encode_password = None
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def fullname(self):
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return _('LabelSync')
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def description(self):
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return '%s\n\n%s' % (_("The new and improved LabelSync plugin. This can sync your labels across multiple Electrum installs by using a remote database to save your data. Labels, transactions ids and addresses are encrypted before they are sent to the remote server."), _("The label sync's server software is open-source as well and can be found on github.com/maran/electrum-sync-server"))
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def version(self):
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return "0.0.1"
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def encode(self, message):
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encrypted = electrum.bitcoin.aes_encrypt_with_iv(self.encode_password, self.iv, message.encode('utf8'))
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encoded_message = base64.b64encode(encrypted)
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return encoded_message
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def decode(self, message):
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decoded_message = electrum.bitcoin.aes_decrypt_with_iv(self.encode_password, self.iv, base64.b64decode(message)).decode('utf8')
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return decoded_message
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def set_nonce(self, nonce):
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self.print_error("Set nonce to", nonce)
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self.wallet.storage.put("wallet_nonce", nonce, True)
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self.wallet_nonce = nonce
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@hook
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def init_qt(self, gui):
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self.window = gui.main_window
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self.window.connect(self.window, SIGNAL('labels:pulled'), self.on_pulled)
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@hook
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def load_wallet(self, wallet):
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self.wallet = wallet
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self.wallet_nonce = self.wallet.storage.get("wallet_nonce")
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self.print_error("Wallet nonce is", self.wallet_nonce)
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if self.wallet_nonce is None:
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self.set_nonce(1)
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mpk = ''.join(sorted(self.wallet.get_master_public_keys().values()))
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self.encode_password = hashlib.sha1(mpk).digest().encode('hex')[:32]
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self.iv = hashlib.sha256(self.encode_password).digest()[:16]
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self.wallet_id = hashlib.sha256(mpk).digest().encode('hex')
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addresses = []
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for account in self.wallet.accounts.values():
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for address in account.get_addresses(0):
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addresses.append(address)
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self.addresses = addresses
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# If there is an auth token we can try to actually start syncing
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def do_pull_thread():
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try:
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self.pull_thread()
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except Exception as e:
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self.print_error("could not retrieve labels:", e)
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t = threading.Thread(target=do_pull_thread)
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t.setDaemon(True)
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t.start()
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def is_available(self):
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return True
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def requires_settings(self):
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return True
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@hook
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def set_label(self, item,label, changed):
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if self.encode_password is None:
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return
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if not changed:
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return
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bundle = {"walletId": self.wallet_id, "walletNonce": self.wallet.storage.get("wallet_nonce"), "externalId": self.encode(item), "encryptedLabel": self.encode(label)}
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t = threading.Thread(target=self.do_request, args=["POST", "/label", False, bundle])
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t.setDaemon(True)
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t.start()
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self.set_nonce(self.wallet.storage.get("wallet_nonce") + 1)
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def settings_widget(self, window):
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return EnterButton(_('Settings'), self.settings_dialog)
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def settings_dialog(self):
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d = QDialog()
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vbox = QVBoxLayout(d)
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layout = QGridLayout()
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vbox.addLayout(layout)
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layout.addWidget(QLabel("Label sync options: "),2,0)
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self.upload = ThreadedButton("Force upload", self.push_thread, self.done_processing)
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layout.addWidget(self.upload, 2, 1)
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self.download = ThreadedButton("Force download", lambda: self.pull_thread(True), self.done_processing)
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layout.addWidget(self.download, 2, 2)
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self.accept = OkButton(d, _("Done"))
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vbox.addLayout(Buttons(CancelButton(d), self.accept))
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if d.exec_():
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return True
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else:
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return False
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def on_pulled(self):
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wallet = self.wallet
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wallet.storage.put('labels', wallet.labels, True)
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self.window.labelsChanged.emit()
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def done_processing(self):
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QMessageBox.information(None, _("Labels synchronised"), _("Your labels have been synchronised."))
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def do_request(self, method, url = "/labels", is_batch=False, data=None):
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url = 'http://' + self.target_host + url
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kwargs = {'headers': {}}
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if method == 'GET' and data:
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kwargs['params'] = data
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elif method == 'POST' and data:
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kwargs['data'] = json.dumps(data)
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kwargs['headers']['Content-Type'] = 'application/json'
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response = requests.request(method, url, **kwargs)
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if response.status_code != 200:
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raise BaseException(response.status_code, response.text)
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response = response.json()
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if "error" in response:
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raise BaseException(response["error"])
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return response
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def push_thread(self):
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bundle = {"labels": [], "walletId": self.wallet_id, "walletNonce": self.wallet_nonce}
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for key, value in self.wallet.labels.iteritems():
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try:
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encoded_key = self.encode(key)
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encoded_value = self.encode(value)
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except:
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self.print_error('cannot encode', repr(key), repr(value))
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continue
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bundle["labels"].append({'encryptedLabel': encoded_value, 'externalId': encoded_key})
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self.do_request("POST", "/labels", True, bundle)
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def pull_thread(self, force = False):
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wallet_nonce = 1 if force else self.wallet_nonce - 1
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self.print_error("Asking for labels since nonce", wallet_nonce)
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response = self.do_request("GET", ("/labels/since/%d/for/%s" % (wallet_nonce, self.wallet_id) ))
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result = {}
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if not response["labels"] is None:
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for label in response["labels"]:
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try:
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key = self.decode(label["externalId"])
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value = self.decode(label["encryptedLabel"])
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except:
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continue
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try:
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json.dumps(key)
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json.dumps(value)
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except:
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self.print_error('error: no json', key)
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continue
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result[key] = value
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wallet = self.wallet
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if not wallet:
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return
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for key, value in result.items():
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if force or not wallet.labels.get(key):
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wallet.labels[key] = value
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self.window.emit(SIGNAL('labels:pulled'))
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self.set_nonce(response["nonce"] + 1)
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self.print_error("received %d labels"%len(response))
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