#!/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.
from PyQt4.QtGui import *
from PyQt4.QtCore import *
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(WindowModalDialog):
def __init__(self, network, config, parent):
WindowModalDialog.__init__(self, parent, _('Network'))
self.setMinimumSize(375, 20)
self.nlayout = NetworkChoiceLayout(network, config)
vbox = QVBoxLayout(self)
vbox.addLayout(self.nlayout.layout())
vbox.addLayout(Buttons(CancelButton(self), OkButton(self)))
def do_exec(self):
result = self.exec_()
if result:
self.nlayout.accept()
return result
class NetworkChoiceLayout(object):
def __init__(self, network, config, wizard=False):
self.network = network
self.config = config
self.protocol = None
self.servers = network.get_servers()
host, port, protocol, proxy_config, auto_connect = network.get_parameters()
if not proxy_config:
proxy_config = { "mode":"none", "host":"localhost", "port":"9050"}
if not wizard:
n = len(network.get_interfaces())
if n:
status = _("Blockchain") + ": " + "%d "%(network.get_local_height()) + _("blocks") + ".\n" + _("Getting block headers from %d nodes.")%n
else:
status = _("Not connected")
if network.is_connected():
status += "\n" + _("Server") + ": %s"%(host)
else:
status += "\n" + _("Disconnected from server")
else:
status = _("Please choose a server.") + "\n" + _("Press 'Next' if you are offline.")
vbox = QVBoxLayout()
hbox = QHBoxLayout()
l = QLabel()
l.setPixmap(QPixmap(":icons/network.png"))
hbox.addStretch(10)
hbox.addWidget(l)
hbox.addWidget(QLabel(status))
hbox.addStretch(50)
msg = _("Electrum sends your wallet addresses to a single server, in order to receive your transaction history.") + "\n\n" \
+ _("In addition, 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 the address server.")
hbox.addWidget(HelpButton(msg))
vbox.addLayout(hbox)
vbox.addSpacing(15)
# grid layout
grid = QGridLayout()
grid.setSpacing(8)
vbox.addLayout(grid)
# server
self.server_host = QLineEdit()
self.server_host.setFixedWidth(200)
self.server_port = QLineEdit()
self.server_port.setFixedWidth(60)
grid.addWidget(QLabel(_('Server') + ':'), 0, 0)
grid.addWidget(self.server_host, 0, 1, 1, 2)
grid.addWidget(self.server_port, 0, 3)
# use SSL
self.ssl_cb = QCheckBox(_('Use SSL'))
self.ssl_cb.setChecked(auto_connect)
grid.addWidget(self.ssl_cb, 3, 1, 1, 3)
self.ssl_cb.stateChanged.connect(self.change_protocol)
# auto connect
self.autoconnect_cb = QCheckBox(_('Select server automatically'))
self.autoconnect_cb.setChecked(auto_connect)
grid.addWidget(self.autoconnect_cb, 1, 1, 1, 3)
self.autoconnect_cb.setEnabled(self.config.is_modifiable('auto_connect'))
msg = _("If auto-connect is enabled, Electrum will always use a server that is on the longest blockchain.") + "\n" \
+ _("If it is disabled, Electrum will warn you if your server is lagging.")
self.autoconnect_cb.setToolTip(msg)
label = _('Active Servers') if network.is_connected() else _('Default Servers')
self.servers_list_widget = QTreeWidget()
self.servers_list_widget.setHeaderLabels( [ label, _('Limit') ] )
self.servers_list_widget.setMaximumHeight(150)
self.servers_list_widget.setColumnWidth(0, 240)
self.change_server(host, protocol)
self.set_protocol(protocol)
self.servers_list_widget.connect(self.servers_list_widget,
SIGNAL('currentItemChanged(QTreeWidgetItem*,QTreeWidgetItem*)'),
lambda x,y: self.server_changed(x))
grid.addWidget(self.servers_list_widget, 2, 1, 1, 3)
def enable_set_server():
if config.is_modifiable('server'):
enabled = not self.autoconnect_cb.isChecked()
self.server_host.setEnabled(enabled)
self.server_port.setEnabled(enabled)
self.servers_list_widget.setEnabled(enabled)
else:
for w in [self.autoconnect_cb, self.server_host, self.server_port, self.ssl_cb, self.servers_list_widget]:
w.setEnabled(False)
self.autoconnect_cb.clicked.connect(enable_set_server)
enable_set_server()
# proxy setting
self.proxy_mode = QComboBox()
self.proxy_host = QLineEdit()
self.proxy_host.setFixedWidth(200)
self.proxy_port = QLineEdit()
self.proxy_port.setFixedWidth(60)
self.proxy_mode.addItems(['NONE', 'SOCKS4', 'SOCKS5', 'HTTP'])
def check_for_disable(index = False):
if self.config.is_modifiable('proxy'):
if self.proxy_mode.currentText() != 'NONE':
self.proxy_host.setEnabled(True)
self.proxy_port.setEnabled(True)
else:
self.proxy_host.setEnabled(False)
self.proxy_port.setEnabled(False)
else:
for w in [self.proxy_host, self.proxy_port, self.proxy_mode]: w.setEnabled(False)
check_for_disable()
self.proxy_mode.connect(self.proxy_mode, SIGNAL('currentIndexChanged(int)'), check_for_disable)
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"))
grid.addWidget(QLabel(_('Proxy') + ':'), 4, 0)
grid.addWidget(self.proxy_mode, 4, 1)
grid.addWidget(self.proxy_host, 4, 2)
grid.addWidget(self.proxy_port, 4, 3)
self.layout_ = vbox
def layout(self):
return self.layout_
def init_servers_list(self):
self.servers_list_widget.clear()
for _host, d in sorted(self.servers.items()):
if d.get(self.protocol):
pruning_level = d.get('pruning','')
self.servers_list_widget.addTopLevelItem(QTreeWidgetItem( [ _host, pruning_level ] ))
def set_protocol(self, protocol):
if protocol != self.protocol:
self.protocol = protocol
self.init_servers_list()
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)
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):
host = str(self.server_host.text())
port = str(self.server_port.text())
protocol = 's' if self.ssl_cb.isChecked() else 't'
# sanitize
try:
deserialize_server(serialize_server(host, port, protocol))
except:
return
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()) }
else:
proxy = None
auto_connect = self.autoconnect_cb.isChecked()
self.network.set_parameters(host, port, protocol, proxy, auto_connect)