#!/usr/bin/env python # # Electrum - lightweight Bitcoin client # Copyright (C) 2012 thomasv@gitorious # # 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 socket from PyQt4.QtGui import * from PyQt4.QtCore import * import PyQt4.QtCore as QtCore from electrum.i18n import _ from electrum.network import DEFAULT_PORTS from electrum.network import serialize_server, deserialize_server from util import * protocol_names = ['TCP', 'SSL'] protocol_letters = 'ts' class NetworkDialog(QDialog): def __init__(self, network, config): QDialog.__init__(self) self.setWindowTitle(_('Network')) self.setMinimumSize(500, 20) self.nlayout = NetworkChoiceLayout(network, config) vbox = QVBoxLayout(self) vbox.addLayout(self.nlayout.layout()) vbox.addLayout(Buttons(CloseButton(self))) self.connect(self, QtCore.SIGNAL('updated'), self.on_update) network.register_callback(self.on_network, ['updated', 'interfaces']) def on_network(self, event, *args): self.emit(QtCore.SIGNAL('updated'), event, *args) def on_update(self): self.nlayout.update() class NodesListWidget(QTreeWidget): def __init__(self, parent): QTreeWidget.__init__(self) self.parent = parent self.setHeaderLabels([_('Node'), _('Height')]) self.setContextMenuPolicy(Qt.CustomContextMenu) self.customContextMenuRequested.connect(self.create_menu) def create_menu(self, position): item = self.currentItem() if not item: return is_server = not bool(item.data(0, Qt.UserRole).toInt()[0]) menu = QMenu() if is_server: server = unicode(item.data(1, Qt.UserRole).toString()) menu.addAction(_("Use as server"), lambda: self.parent.follow_server(server)) else: index = item.data(1, Qt.UserRole).toInt()[0] menu.addAction(_("Follow this branch"), lambda: self.parent.follow_branch(index)) menu.exec_(self.viewport().mapToGlobal(position)) def keyPressEvent(self, event): if event.key() in [ Qt.Key_F2, Qt.Key_Return ]: self.on_activated(self.currentItem(), self.currentColumn()) else: QTreeWidget.keyPressEvent(self, event) def on_activated(self, item, column): # on 'enter' we show the menu pt = self.visualItemRect(item).bottomLeft() pt.setX(50) self.emit(SIGNAL('customContextMenuRequested(const QPoint&)'), pt) def update(self, network): self.clear() self.addChild = self.addTopLevelItem chains = network.get_blockchains() n_chains = len(chains) for k, items in chains.items(): b = network.blockchains[k] name = b.get_name() if n_chains >1: x = QTreeWidgetItem([name + '@%d'%b.get_checkpoint(), '%d'%b.height()]) x.setData(0, Qt.UserRole, 1) x.setData(1, Qt.UserRole, b.checkpoint) else: x = self for i in items: star = ' *' if i == network.interface else '' item = QTreeWidgetItem([i.host + star, '%d'%i.tip]) item.setData(0, Qt.UserRole, 0) item.setData(1, Qt.UserRole, i.server) x.addChild(item) if n_chains>1: self.addTopLevelItem(x) x.setExpanded(True) h = self.header() h.setStretchLastSection(False) h.setResizeMode(0, QHeaderView.Stretch) h.setResizeMode(1, QHeaderView.ResizeToContents) class ServerListWidget(QTreeWidget): def __init__(self, parent): QTreeWidget.__init__(self) self.parent = parent self.setHeaderLabels([_('Host'), _('Port')]) self.setContextMenuPolicy(Qt.CustomContextMenu) self.customContextMenuRequested.connect(self.create_menu) def create_menu(self, position): item = self.currentItem() if not item: return menu = QMenu() server = unicode(item.data(1, Qt.UserRole).toString()) menu.addAction(_("Use as server"), lambda: self.set_server(server)) menu.exec_(self.viewport().mapToGlobal(position)) def set_server(self, s): host, port, protocol = s.split(':') self.parent.server_host.setText(host) self.parent.server_port.setText(port) self.parent.set_server() def keyPressEvent(self, event): if event.key() in [ Qt.Key_F2, Qt.Key_Return ]: self.on_activated(self.currentItem(), self.currentColumn()) else: QTreeWidget.keyPressEvent(self, event) def on_activated(self, item, column): # on 'enter' we show the menu pt = self.visualItemRect(item).bottomLeft() pt.setX(50) self.emit(SIGNAL('customContextMenuRequested(const QPoint&)'), pt) def update(self, servers, protocol, use_tor): self.clear() for _host, d in sorted(servers.items()): if _host.endswith('.onion') and not use_tor: continue port = d.get(protocol) if port: x = QTreeWidgetItem([_host, port]) server = _host+':'+port+':'+protocol x.setData(1, Qt.UserRole, server) self.addTopLevelItem(x) h = self.header() h.setStretchLastSection(False) h.setResizeMode(0, QHeaderView.Stretch) h.setResizeMode(1, QHeaderView.ResizeToContents) class NetworkChoiceLayout(object): def __init__(self, network, config, wizard=False): self.network = network self.config = config self.protocol = None self.tor_proxy = None self.tabs = tabs = QTabWidget() server_tab = QWidget() proxy_tab = QWidget() blockchain_tab = QWidget() tabs.addTab(blockchain_tab, _('Overview')) tabs.addTab(proxy_tab, _('Proxy')) tabs.addTab(server_tab, _('Server')) # server tab grid = QGridLayout(server_tab) grid.setSpacing(8) self.server_host = QLineEdit() self.server_host.setFixedWidth(200) self.server_port = QLineEdit() self.server_port.setFixedWidth(60) self.ssl_cb = QCheckBox(_('Use SSL')) self.autoconnect_cb = QCheckBox(_('Select server automatically')) self.autoconnect_cb.setEnabled(self.config.is_modifiable('auto_connect')) self.server_host.editingFinished.connect(self.set_server) self.server_port.editingFinished.connect(self.set_server) self.ssl_cb.clicked.connect(self.change_protocol) self.autoconnect_cb.clicked.connect(self.set_server) self.autoconnect_cb.clicked.connect(self.update) grid.addWidget(QLabel(_('Server') + ':'), 1, 0) grid.addWidget(self.server_host, 1, 1, 1, 2) grid.addWidget(self.server_port, 1, 3) label = _('Server peers') if network.is_connected() else _('Default Servers') grid.addWidget(QLabel(label), 2, 0, 1, 5) self.servers_list = ServerListWidget(self) grid.addWidget(self.servers_list, 3, 0, 1, 5) # Proxy tab grid = QGridLayout(proxy_tab) grid.setSpacing(8) # proxy setting self.proxy_mode = QComboBox() self.proxy_mode.addItems(['NONE', 'SOCKS4', 'SOCKS5', 'HTTP']) self.proxy_host = QLineEdit() self.proxy_host.setFixedWidth(200) self.proxy_port = QLineEdit() self.proxy_port.setFixedWidth(60) self.proxy_user = QLineEdit() self.proxy_user.setPlaceholderText(_("Proxy user")) self.proxy_password = QLineEdit() self.proxy_password.setPlaceholderText(_("Password")) self.proxy_password.setEchoMode(QLineEdit.Password) self.proxy_password.setFixedWidth(60) self.proxy_mode.currentIndexChanged.connect(self.set_proxy) self.proxy_host.editingFinished.connect(self.set_proxy) self.proxy_port.editingFinished.connect(self.set_proxy) self.proxy_user.editingFinished.connect(self.set_proxy) self.proxy_password.editingFinished.connect(self.set_proxy) self.check_disable_proxy() self.proxy_mode.connect(self.proxy_mode, SIGNAL('currentIndexChanged(int)'), self.check_disable_proxy) self.proxy_mode.connect(self.proxy_mode, SIGNAL('currentIndexChanged(int)'), self.proxy_settings_changed) self.proxy_host.connect(self.proxy_host, SIGNAL('textEdited(QString)'), self.proxy_settings_changed) self.proxy_port.connect(self.proxy_port, SIGNAL('textEdited(QString)'), self.proxy_settings_changed) self.proxy_user.connect(self.proxy_user, SIGNAL('textEdited(QString)'), self.proxy_settings_changed) self.proxy_password.connect(self.proxy_password, SIGNAL('textEdited(QString)'), self.proxy_settings_changed) self.tor_cb = QCheckBox(_("Use Tor Proxy")) self.tor_cb.setIcon(QIcon(":icons/tor_logo.png")) self.tor_cb.hide() self.tor_cb.clicked.connect(self.use_tor_proxy) grid.addWidget(self.ssl_cb, 0, 0, 1, 3) grid.addWidget(self.tor_cb, 1, 0, 1, 3) grid.addWidget(self.proxy_mode, 4, 1) grid.addWidget(self.proxy_host, 4, 2) grid.addWidget(self.proxy_port, 4, 3) grid.addWidget(self.proxy_user, 5, 2) grid.addWidget(self.proxy_password, 5, 3) grid.setRowStretch(6, 1) # Blockchain Tab grid = QGridLayout(blockchain_tab) msg = ' '.join([ _("Electrum connects to several nodes in order to download block headers and find out the longest blockchain."), _("This blockchain is used to verify the transactions sent by your transaction server.") ]) self.status_label = QLabel('') grid.addWidget(QLabel(_('Status') + ':'), 0, 0) grid.addWidget(self.status_label, 0, 1, 1, 3) grid.addWidget(HelpButton(msg), 0, 4) self.server_label = QLabel('') msg = _("Electrum sends your wallet addresses to a single server, in order to receive your transaction history.") grid.addWidget(QLabel(_('Server') + ':'), 1, 0) grid.addWidget(self.server_label, 1, 1, 1, 3) grid.addWidget(HelpButton(msg), 1, 4) self.height_label = QLabel('') msg = _('This is the height of your local copy of the blockchain.') grid.addWidget(QLabel(_('Blockchain') + ':'), 2, 0) grid.addWidget(self.height_label, 2, 1) grid.addWidget(HelpButton(msg), 2, 4) self.split_label = QLabel('') grid.addWidget(self.split_label, 3, 0, 1, 3) msg = ' '.join([ _("If auto-connect is enabled, Electrum will always use a server that is on the longest blockchain."), _("If it is disabled, you have to choose a server you want to use. Electrum will warn you if your server is lagging.") ]) grid.addWidget(self.autoconnect_cb, 4, 0, 1, 3) grid.addWidget(HelpButton(msg), 4, 4) self.nodes_list_widget = NodesListWidget(self) grid.addWidget(self.nodes_list_widget, 5, 0, 1, 5) vbox = QVBoxLayout() vbox.addWidget(tabs) self.layout_ = vbox # tor detector self.td = td = TorDetector() td.found_proxy.connect(self.suggest_proxy) td.start() self.update() def check_disable_proxy(self, index = False): if self.config.is_modifiable('proxy'): for w in [self.proxy_host, self.proxy_port, self.proxy_user, self.proxy_password]: w.setEnabled(self.proxy_mode.currentText() != 'NONE') else: for w in [self.proxy_host, self.proxy_port, self.proxy_mode]: w.setEnabled(False) def enable_set_server(self): if self.config.is_modifiable('server'): enabled = not self.autoconnect_cb.isChecked() self.server_host.setEnabled(enabled) self.server_port.setEnabled(enabled) self.servers_list.setEnabled(enabled) self.tabs.setTabEnabled(2, enabled) else: for w in [self.autoconnect_cb, self.server_host, self.server_port, self.ssl_cb, self.servers_list]: w.setEnabled(False) def update(self): host, port, protocol, proxy_config, auto_connect = self.network.get_parameters() if not proxy_config: proxy_config = { "mode":"none", "host":"localhost", "port":"9050"} self.server_host.setText(host) self.server_port.setText(port) self.ssl_cb.setChecked(protocol=='s') self.autoconnect_cb.setChecked(auto_connect) host = self.network.interface.host if self.network.interface else _('None') self.server_label.setText(host) self.set_protocol(protocol) self.servers = self.network.get_servers() self.servers_list.update(self.servers, self.protocol, self.tor_cb.isChecked()) self.enable_set_server() # proxy tab self.proxy_mode.setCurrentIndex(self.proxy_mode.findText(str(proxy_config.get("mode").upper()))) self.proxy_host.setText(proxy_config.get("host")) self.proxy_port.setText(proxy_config.get("port")) self.proxy_user.setText(proxy_config.get("user", "")) self.proxy_password.setText(proxy_config.get("password", "")) height_str = "%d "%(self.network.get_local_height()) + _('blocks') self.height_label.setText(height_str) n = len(self.network.get_interfaces()) status = _("Connected to %d nodes.")%n if n else _("Not connected") self.status_label.setText(status) chains = self.network.get_blockchains() if len(chains)>1: chain = self.network.blockchain() checkpoint = chain.get_checkpoint() name = chain.get_name() msg = _('Chain split detected at block %d')%checkpoint + '\n' msg += (_('You are following branch') if auto_connect else _('Your server is on branch'))+ ' ' + name msg += ' (%d %s)' % (chain.get_branch_size(), _('blocks')) else: msg = '' self.split_label.setText(msg) self.nodes_list_widget.update(self.network) def layout(self): return self.layout_ def set_protocol(self, protocol): if protocol != self.protocol: self.protocol = protocol def change_protocol(self, use_ssl): p = 's' if use_ssl else 't' host = unicode(self.server_host.text()) pp = self.servers.get(host, DEFAULT_PORTS) if p not in pp.keys(): p = pp.keys()[0] port = pp[p] self.server_host.setText(host) self.server_port.setText(port) self.set_protocol(p) self.set_server() def follow_branch(self, index): self.network.follow_chain(index) self.update() def follow_server(self, server): self.network.switch_to_interface(server) host, port, protocol, proxy, auto_connect = self.network.get_parameters() host, port, protocol = server.split(':') self.network.set_parameters(host, port, protocol, proxy, auto_connect) self.update() def server_changed(self, x): if x: self.change_server(str(x.text(0)), self.protocol) def change_server(self, host, protocol): pp = self.servers.get(host, DEFAULT_PORTS) if protocol and protocol not in protocol_letters: protocol = None if protocol: port = pp.get(protocol) if port is None: protocol = None if not protocol: if 's' in pp.keys(): protocol = 's' port = pp.get(protocol) else: protocol = pp.keys()[0] port = pp.get(protocol) self.server_host.setText(host) self.server_port.setText(port) self.ssl_cb.setChecked(protocol=='s') def accept(self): pass def set_server(self): host, port, protocol, proxy, auto_connect = self.network.get_parameters() host = str(self.server_host.text()) port = str(self.server_port.text()) protocol = 's' if self.ssl_cb.isChecked() else 't' auto_connect = self.autoconnect_cb.isChecked() self.network.set_parameters(host, port, protocol, proxy, auto_connect) def set_proxy(self): host, port, protocol, proxy, auto_connect = self.network.get_parameters() if self.proxy_mode.currentText() != 'NONE': proxy = { 'mode':str(self.proxy_mode.currentText()).lower(), 'host':str(self.proxy_host.text()), 'port':str(self.proxy_port.text()), 'user':str(self.proxy_user.text()), 'password':str(self.proxy_password.text())} else: proxy = None self.network.set_parameters(host, port, protocol, proxy, auto_connect) def suggest_proxy(self, found_proxy): self.tor_proxy = found_proxy self.tor_cb.setText("Use Tor proxy at port " + str(found_proxy[1])) if self.proxy_mode.currentIndex() == 2 \ and self.proxy_host.text() == "127.0.0.1" \ and self.proxy_port.text() == str(found_proxy[1]): self.tor_cb.setChecked(True) self.tor_cb.show() def use_tor_proxy(self, use_it): # 2 = SOCKS5 if not use_it: self.proxy_mode.setCurrentIndex(0) self.tor_cb.setChecked(False) else: self.proxy_mode.setCurrentIndex(2) self.proxy_host.setText("127.0.0.1") self.proxy_port.setText(str(self.tor_proxy[1])) self.proxy_user.setText("") self.proxy_password.setText("") self.tor_cb.setChecked(True) self.set_proxy() def proxy_settings_changed(self): self.tor_cb.setChecked(False) class TorDetector(QThread): found_proxy = pyqtSignal(object) def __init__(self): QThread.__init__(self) def run(self): # Probable ports for Tor to listen at ports = [9050, 9150] for p in ports: if TorDetector.is_tor_port(p): self.found_proxy.emit(("127.0.0.1", p)) return @staticmethod def is_tor_port(port): try: s = socket._socketobject(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(0.1) s.connect(("127.0.0.1", port)) # Tor responds uniquely to HTTP-like requests s.send("GET\n") if "Tor is not an HTTP Proxy" in s.recv(1024): return True except socket.error: pass return False