#!/usr/bin/env python # # Electrum - Lightweight bitcoinprivate Client # Copyright (C) 2015 Thomas Voegtlin # # Permission is hereby granted, free of charge, to any person # obtaining a copy of this software and associated documentation files # (the "Software"), to deal in the Software without restriction, # including without limitation the rights to use, copy, modify, merge, # publish, distribute, sublicense, and/or sell copies of the Software, # and to permit persons to whom the Software is furnished to do so, # subject to the following conditions: # # The above copyright notice and this permission notice shall be # included in all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE # SOFTWARE. import random import time import threading import base64 from functools import partial import traceback import sys import smtplib import imaplib import email from email.mime.multipart import MIMEMultipart from email.mime.base import MIMEBase from email.encoders import encode_base64 from PyQt5.QtGui import * from PyQt5.QtCore import * from PyQt5.QtWidgets import (QVBoxLayout, QLabel, QGridLayout, QLineEdit, QInputDialog) from electrum_bitcoinprivate.plugins import BasePlugin, hook from electrum_bitcoinprivate.paymentrequest import PaymentRequest from electrum_bitcoinprivate.i18n import _ from electrum_bitcoinprivate.util import PrintError from electrum_bitcoinprivate_gui.qt.util import (EnterButton, Buttons, CloseButton, OkButton, WindowModalDialog, get_parent_main_window) class Processor(threading.Thread, PrintError): polling_interval = 5*60 def __init__(self, imap_server, username, password, callback): threading.Thread.__init__(self) self.daemon = True self.username = username self.password = password self.imap_server = imap_server self.on_receive = callback self.M = None self.connect_wait = 100 # ms, between failed connection attempts def poll(self): try: self.M.select() except: return typ, data = self.M.search(None, 'ALL') for num in str(data[0], 'utf8').split(): typ, msg_data = self.M.fetch(num, '(RFC822)') msg = email.message_from_string(str(msg_data[0][1], 'utf8')) p = msg.get_payload() if not msg.is_multipart(): p = [p] continue for item in p: if item.get_content_type() == "application/bitcoinprivate-paymentrequest": pr_str = item.get_payload() pr_str = base64.b64decode(pr_str) self.on_receive(pr_str) def run(self): while True: try: self.M = imaplib.IMAP4_SSL(self.imap_server) self.M.login(self.username, self.password) except BaseException as e: self.print_error(e) self.connect_wait *= 2 # Reconnect when host changes while self.M and self.M.host == self.imap_server: self.poll() time.sleep(self.polling_interval) time.sleep(random.randint(0, self.connect_wait)) def send(self, recipient, message, payment_request): msg = MIMEMultipart() msg['Subject'] = message msg['To'] = recipient msg['From'] = self.username part = MIMEBase('application', "bitcoinprivate-paymentrequest") part.set_payload(payment_request) encode_base64(part) part.add_header('Content-Disposition', 'attachment; filename="payreq.btcp"') msg.attach(part) try: s = smtplib.SMTP_SSL(self.imap_server, timeout=2) s.login(self.username, self.password) s.sendmail(self.username, [recipient], msg.as_string()) s.quit() except BaseException as e: self.print_error(e) class QEmailSignalObject(QObject): email_new_invoice_signal = pyqtSignal() class Plugin(BasePlugin): def fullname(self): return 'Email' def description(self): return _("Send and receive payment requests via email") def is_available(self): return True def __init__(self, parent, config, name): BasePlugin.__init__(self, parent, config, name) self.imap_server = self.config.get('email_server', '') self.username = self.config.get('email_username', '') self.password = self.config.get('email_password', '') if self.imap_server and self.username and self.password: self.processor = Processor(self.imap_server, self.username, self.password, self.on_receive) self.processor.start() self.obj = QEmailSignalObject() self.obj.email_new_invoice_signal.connect(self.new_invoice) self.wallets = set() def on_receive(self, pr_str): self.print_error('received payment request') self.pr = PaymentRequest(pr_str) self.obj.email_new_invoice_signal.emit() @hook def load_wallet(self, wallet, main_window): self.wallets |= {wallet} @hook def close_wallet(self, wallet): self.wallets -= {wallet} def new_invoice(self): for wallet in self.wallets: wallet.invoices.add(self.pr) #main_window.invoice_list.update() @hook def receive_list_menu(self, menu, addr): window = get_parent_main_window(menu) menu.addAction(_("Send via e-mail"), lambda: self.send(window, addr)) def send(self, window, addr): from electrum_bitcoinprivate import paymentrequest r = window.wallet.receive_requests.get(addr) message = r.get('memo', '') if r.get('signature'): pr = paymentrequest.serialize_request(r) else: pr = paymentrequest.make_request(self.config, r) if not pr: return recipient, ok = QInputDialog.getText(window, 'Send request', 'Email invoice to:') if not ok: return recipient = str(recipient) payload = pr.SerializeToString() self.print_error('sending mail to', recipient) try: # FIXME this runs in the GUI thread and blocks it... self.processor.send(recipient, message, payload) except BaseException as e: traceback.print_exc(file=sys.stderr) window.show_message(str(e)) else: window.show_message(_('Request sent.')) def requires_settings(self): return True def settings_widget(self, window): return EnterButton(_('Settings'), partial(self.settings_dialog, window)) def settings_dialog(self, window): d = WindowModalDialog(window, _("Email settings")) d.setMinimumSize(500, 200) vbox = QVBoxLayout(d) vbox.addWidget(QLabel(_('Server hosting your email account'))) grid = QGridLayout() vbox.addLayout(grid) grid.addWidget(QLabel('Server (IMAP)'), 0, 0) server_e = QLineEdit() server_e.setText(self.imap_server) grid.addWidget(server_e, 0, 1) grid.addWidget(QLabel('Username'), 1, 0) username_e = QLineEdit() username_e.setText(self.username) grid.addWidget(username_e, 1, 1) grid.addWidget(QLabel('Password'), 2, 0) password_e = QLineEdit() password_e.setText(self.password) grid.addWidget(password_e, 2, 1) vbox.addStretch() vbox.addLayout(Buttons(CloseButton(d), OkButton(d))) if not d.exec_(): return server = str(server_e.text()) self.config.set_key('email_server', server) self.imap_server = server username = str(username_e.text()) self.config.set_key('email_username', username) self.username = username password = str(password_e.text()) self.config.set_key('email_password', password) self.password = password check_connection = CheckConnectionThread(server, username, password) check_connection.connection_error_signal.connect(lambda e: window.show_message( _("Unable to connect to mail server:\n {}").format(e) + "\n" + _("Please check your connection and credentials.") )) check_connection.start() class CheckConnectionThread(QThread): connection_error_signal = pyqtSignal(str) def __init__(self, server, username, password): super().__init__() self.server = server self.username = username self.password = password def run(self): try: conn = imaplib.IMAP4_SSL(self.server) conn.login(self.username, self.password) except BaseException as e: self.connection_error_signal.emit(str(e))