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543 lines
21 KiB
543 lines
21 KiB
#!/usr/bin/env python
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#
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# Electrum - lightweight Bitcoin client
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# Copyright (C) 2012 thomasv@gitorious
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#
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# Permission is hereby granted, free of charge, to any person
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# obtaining a copy of this software and associated documentation files
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# (the "Software"), to deal in the Software without restriction,
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# including without limitation the rights to use, copy, modify, merge,
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# publish, distribute, sublicense, and/or sell copies of the Software,
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# and to permit persons to whom the Software is furnished to do so,
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# subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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import socket
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import time
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from enum import IntEnum
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from PyQt5.QtCore import Qt, pyqtSignal, QThread
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from PyQt5.QtWidgets import (QTreeWidget, QTreeWidgetItem, QMenu, QGridLayout, QComboBox,
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QLineEdit, QDialog, QVBoxLayout, QHeaderView, QCheckBox,
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QTabWidget, QWidget, QLabel)
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from electrum.i18n import _
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from electrum import constants, blockchain
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from electrum.interface import serialize_server, deserialize_server
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from electrum.network import Network
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from electrum.logging import get_logger
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from .util import Buttons, CloseButton, HelpButton, read_QIcon
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_logger = get_logger(__name__)
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protocol_names = ['TCP', 'SSL']
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protocol_letters = 'ts'
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class NetworkDialog(QDialog):
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def __init__(self, network, config, network_updated_signal_obj):
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QDialog.__init__(self)
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self.setWindowTitle(_('Network'))
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self.setMinimumSize(500, 300)
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self.nlayout = NetworkChoiceLayout(network, config)
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self.network_updated_signal_obj = network_updated_signal_obj
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vbox = QVBoxLayout(self)
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vbox.addLayout(self.nlayout.layout())
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vbox.addLayout(Buttons(CloseButton(self)))
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self.network_updated_signal_obj.network_updated_signal.connect(
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self.on_update)
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network.register_callback(self.on_network, ['network_updated'])
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def on_network(self, event, *args):
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self.network_updated_signal_obj.network_updated_signal.emit(event, args)
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def on_update(self):
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self.nlayout.update()
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class NodesListWidget(QTreeWidget):
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def __init__(self, parent):
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QTreeWidget.__init__(self)
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self.parent = parent
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self.setHeaderLabels([_('Connected node'), _('Height')])
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self.setContextMenuPolicy(Qt.CustomContextMenu)
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self.customContextMenuRequested.connect(self.create_menu)
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def create_menu(self, position):
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item = self.currentItem()
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if not item:
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return
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is_server = not bool(item.data(0, Qt.UserRole))
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menu = QMenu()
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if is_server:
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server = item.data(1, Qt.UserRole)
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menu.addAction(_("Use as server"), lambda: self.parent.follow_server(server))
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else:
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chain_id = item.data(1, Qt.UserRole)
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menu.addAction(_("Follow this branch"), lambda: self.parent.follow_branch(chain_id))
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menu.exec_(self.viewport().mapToGlobal(position))
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def keyPressEvent(self, event):
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if event.key() in [ Qt.Key_F2, Qt.Key_Return ]:
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self.on_activated(self.currentItem(), self.currentColumn())
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else:
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QTreeWidget.keyPressEvent(self, event)
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def on_activated(self, item, column):
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# on 'enter' we show the menu
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pt = self.visualItemRect(item).bottomLeft()
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pt.setX(50)
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self.customContextMenuRequested.emit(pt)
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def update(self, network: Network):
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self.clear()
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self.addChild = self.addTopLevelItem
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chains = network.get_blockchains()
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n_chains = len(chains)
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for chain_id, interfaces in chains.items():
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b = blockchain.blockchains.get(chain_id)
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if b is None: continue
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name = b.get_name()
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if n_chains > 1:
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x = QTreeWidgetItem([name + '@%d'%b.get_max_forkpoint(), '%d'%b.height()])
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x.setData(0, Qt.UserRole, 1)
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x.setData(1, Qt.UserRole, b.get_id())
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else:
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x = self
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for i in interfaces:
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star = ' *' if i == network.interface else ''
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item = QTreeWidgetItem([i.host + star, '%d'%i.tip])
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item.setData(0, Qt.UserRole, 0)
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item.setData(1, Qt.UserRole, i.server)
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x.addChild(item)
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if n_chains > 1:
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self.addTopLevelItem(x)
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x.setExpanded(True)
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h = self.header()
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h.setStretchLastSection(False)
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h.setSectionResizeMode(0, QHeaderView.Stretch)
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h.setSectionResizeMode(1, QHeaderView.ResizeToContents)
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super().update()
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class ServerListWidget(QTreeWidget):
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class Columns(IntEnum):
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HOST = 0
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PORT = 1
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SERVER_STR_ROLE = Qt.UserRole + 100
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def __init__(self, parent):
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QTreeWidget.__init__(self)
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self.parent = parent
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self.setHeaderLabels([_('Host'), _('Port')])
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self.setContextMenuPolicy(Qt.CustomContextMenu)
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self.customContextMenuRequested.connect(self.create_menu)
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def create_menu(self, position):
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item = self.currentItem()
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if not item:
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return
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menu = QMenu()
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server = item.data(self.Columns.HOST, self.SERVER_STR_ROLE)
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menu.addAction(_("Use as server"), lambda: self.set_server(server))
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menu.exec_(self.viewport().mapToGlobal(position))
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def set_server(self, s):
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host, port, protocol = deserialize_server(s)
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self.parent.server_host.setText(host)
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self.parent.server_port.setText(port)
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self.parent.set_server()
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def keyPressEvent(self, event):
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if event.key() in [ Qt.Key_F2, Qt.Key_Return ]:
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self.on_activated(self.currentItem(), self.currentColumn())
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else:
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QTreeWidget.keyPressEvent(self, event)
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def on_activated(self, item, column):
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# on 'enter' we show the menu
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pt = self.visualItemRect(item).bottomLeft()
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pt.setX(50)
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self.customContextMenuRequested.emit(pt)
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def update(self, servers, protocol, use_tor):
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self.clear()
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for _host, d in sorted(servers.items()):
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if _host.endswith('.onion') and not use_tor:
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continue
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port = d.get(protocol)
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if port:
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x = QTreeWidgetItem([_host, port])
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server = serialize_server(_host, port, protocol)
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x.setData(self.Columns.HOST, self.SERVER_STR_ROLE, server)
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self.addTopLevelItem(x)
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h = self.header()
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h.setStretchLastSection(False)
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h.setSectionResizeMode(self.Columns.HOST, QHeaderView.Stretch)
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h.setSectionResizeMode(self.Columns.PORT, QHeaderView.ResizeToContents)
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super().update()
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class NetworkChoiceLayout(object):
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def __init__(self, network: Network, config, wizard=False):
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self.network = network
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self.config = config
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self.protocol = None
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self.tor_proxy = None
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self.tabs = tabs = QTabWidget()
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server_tab = QWidget()
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proxy_tab = QWidget()
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blockchain_tab = QWidget()
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tabs.addTab(blockchain_tab, _('Overview'))
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tabs.addTab(server_tab, _('Server'))
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tabs.addTab(proxy_tab, _('Proxy'))
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# server tab
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grid = QGridLayout(server_tab)
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grid.setSpacing(8)
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self.server_host = QLineEdit()
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self.server_host.setFixedWidth(200)
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self.server_port = QLineEdit()
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self.server_port.setFixedWidth(60)
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self.autoconnect_cb = QCheckBox(_('Select server automatically'))
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self.autoconnect_cb.setEnabled(self.config.is_modifiable('auto_connect'))
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self.server_host.editingFinished.connect(self.set_server)
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self.server_port.editingFinished.connect(self.set_server)
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self.autoconnect_cb.clicked.connect(self.set_server)
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self.autoconnect_cb.clicked.connect(self.update)
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msg = ' '.join([
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_("If auto-connect is enabled, Electrum will always use a server that is on the longest blockchain."),
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_("If it is disabled, you have to choose a server you want to use. Electrum will warn you if your server is lagging.")
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])
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grid.addWidget(self.autoconnect_cb, 0, 0, 1, 3)
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grid.addWidget(HelpButton(msg), 0, 4)
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grid.addWidget(QLabel(_('Server') + ':'), 1, 0)
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grid.addWidget(self.server_host, 1, 1, 1, 2)
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grid.addWidget(self.server_port, 1, 3)
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label = _('Server peers') if network.is_connected() else _('Default Servers')
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grid.addWidget(QLabel(label), 2, 0, 1, 5)
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self.servers_list = ServerListWidget(self)
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grid.addWidget(self.servers_list, 3, 0, 1, 5)
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# Proxy tab
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grid = QGridLayout(proxy_tab)
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grid.setSpacing(8)
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# proxy setting
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self.proxy_cb = QCheckBox(_('Use proxy'))
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self.proxy_cb.clicked.connect(self.check_disable_proxy)
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self.proxy_cb.clicked.connect(self.set_proxy)
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self.proxy_mode = QComboBox()
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self.proxy_mode.addItems(['SOCKS4', 'SOCKS5'])
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self.proxy_host = QLineEdit()
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self.proxy_host.setFixedWidth(200)
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self.proxy_port = QLineEdit()
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self.proxy_port.setFixedWidth(60)
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self.proxy_user = QLineEdit()
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self.proxy_user.setPlaceholderText(_("Proxy user"))
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self.proxy_password = QLineEdit()
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self.proxy_password.setPlaceholderText(_("Password"))
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self.proxy_password.setEchoMode(QLineEdit.Password)
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self.proxy_password.setFixedWidth(60)
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self.proxy_mode.currentIndexChanged.connect(self.set_proxy)
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self.proxy_host.editingFinished.connect(self.set_proxy)
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self.proxy_port.editingFinished.connect(self.set_proxy)
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self.proxy_user.editingFinished.connect(self.set_proxy)
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self.proxy_password.editingFinished.connect(self.set_proxy)
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self.proxy_mode.currentIndexChanged.connect(self.proxy_settings_changed)
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self.proxy_host.textEdited.connect(self.proxy_settings_changed)
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self.proxy_port.textEdited.connect(self.proxy_settings_changed)
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self.proxy_user.textEdited.connect(self.proxy_settings_changed)
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self.proxy_password.textEdited.connect(self.proxy_settings_changed)
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self.tor_cb = QCheckBox(_("Use Tor Proxy"))
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self.tor_cb.setIcon(read_QIcon("tor_logo.png"))
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self.tor_cb.hide()
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self.tor_cb.clicked.connect(self.use_tor_proxy)
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grid.addWidget(self.tor_cb, 1, 0, 1, 3)
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grid.addWidget(self.proxy_cb, 2, 0, 1, 3)
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grid.addWidget(HelpButton(_('Proxy settings apply to all connections: with Electrum servers, but also with third-party services.')), 2, 4)
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grid.addWidget(self.proxy_mode, 4, 1)
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grid.addWidget(self.proxy_host, 4, 2)
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grid.addWidget(self.proxy_port, 4, 3)
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grid.addWidget(self.proxy_user, 5, 2)
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grid.addWidget(self.proxy_password, 5, 3)
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grid.setRowStretch(7, 1)
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# Blockchain Tab
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grid = QGridLayout(blockchain_tab)
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msg = ' '.join([
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_("Electrum connects to several nodes in order to download block headers and find out the longest blockchain."),
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_("This blockchain is used to verify the transactions sent by your transaction server.")
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])
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self.status_label = QLabel('')
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grid.addWidget(QLabel(_('Status') + ':'), 0, 0)
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grid.addWidget(self.status_label, 0, 1, 1, 3)
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grid.addWidget(HelpButton(msg), 0, 4)
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self.server_label = QLabel('')
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msg = _("Electrum sends your wallet addresses to a single server, in order to receive your transaction history.")
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grid.addWidget(QLabel(_('Server') + ':'), 1, 0)
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grid.addWidget(self.server_label, 1, 1, 1, 3)
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grid.addWidget(HelpButton(msg), 1, 4)
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self.height_label = QLabel('')
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msg = _('This is the height of your local copy of the blockchain.')
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grid.addWidget(QLabel(_('Blockchain') + ':'), 2, 0)
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grid.addWidget(self.height_label, 2, 1)
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grid.addWidget(HelpButton(msg), 2, 4)
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self.split_label = QLabel('')
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grid.addWidget(self.split_label, 3, 0, 1, 3)
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self.nodes_list_widget = NodesListWidget(self)
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grid.addWidget(self.nodes_list_widget, 5, 0, 1, 5)
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vbox = QVBoxLayout()
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vbox.addWidget(tabs)
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self.layout_ = vbox
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# tor detector
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self.td = td = TorDetector()
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td.found_proxy.connect(self.suggest_proxy)
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td.start()
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self.fill_in_proxy_settings()
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self.update()
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def check_disable_proxy(self, b):
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if not self.config.is_modifiable('proxy'):
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b = False
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for w in [self.proxy_mode, self.proxy_host, self.proxy_port, self.proxy_user, self.proxy_password]:
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w.setEnabled(b)
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def enable_set_server(self):
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if self.config.is_modifiable('server'):
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enabled = not self.autoconnect_cb.isChecked()
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self.server_host.setEnabled(enabled)
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self.server_port.setEnabled(enabled)
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self.servers_list.setEnabled(enabled)
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else:
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for w in [self.autoconnect_cb, self.server_host, self.server_port, self.servers_list]:
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w.setEnabled(False)
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def update(self):
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net_params = self.network.get_parameters()
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host, port, protocol = net_params.host, net_params.port, net_params.protocol
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proxy_config, auto_connect = net_params.proxy, net_params.auto_connect
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self.server_host.setText(host)
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self.server_port.setText(str(port))
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self.autoconnect_cb.setChecked(auto_connect)
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interface = self.network.interface
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host = interface.host if interface else _('None')
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self.server_label.setText(host)
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self.set_protocol(protocol)
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self.servers = self.network.get_servers()
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self.servers_list.update(self.servers, self.protocol, self.tor_cb.isChecked())
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self.enable_set_server()
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height_str = "%d "%(self.network.get_local_height()) + _('blocks')
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self.height_label.setText(height_str)
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n = len(self.network.get_interfaces())
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status = _("Connected to {0} nodes.").format(n) if n else _("Not connected")
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self.status_label.setText(status)
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chains = self.network.get_blockchains()
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if len(chains) > 1:
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chain = self.network.blockchain()
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forkpoint = chain.get_max_forkpoint()
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name = chain.get_name()
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msg = _('Chain split detected at block {0}').format(forkpoint) + '\n'
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msg += (_('You are following branch') if auto_connect else _('Your server is on branch'))+ ' ' + name
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msg += ' (%d %s)' % (chain.get_branch_size(), _('blocks'))
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else:
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msg = ''
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self.split_label.setText(msg)
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self.nodes_list_widget.update(self.network)
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def fill_in_proxy_settings(self):
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proxy_config = self.network.get_parameters().proxy
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if not proxy_config:
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proxy_config = {"mode": "none", "host": "localhost", "port": "9050"}
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b = proxy_config.get('mode') != "none"
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self.check_disable_proxy(b)
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if b:
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self.proxy_cb.setChecked(True)
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self.proxy_mode.setCurrentIndex(
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self.proxy_mode.findText(str(proxy_config.get("mode").upper())))
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self.proxy_host.setText(proxy_config.get("host"))
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self.proxy_port.setText(proxy_config.get("port"))
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self.proxy_user.setText(proxy_config.get("user", ""))
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self.proxy_password.setText(proxy_config.get("password", ""))
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def layout(self):
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return self.layout_
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def set_protocol(self, protocol):
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if protocol != self.protocol:
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self.protocol = protocol
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def change_protocol(self, use_ssl):
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p = 's' if use_ssl else 't'
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host = self.server_host.text()
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pp = self.servers.get(host, constants.net.DEFAULT_PORTS)
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if p not in pp.keys():
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p = list(pp.keys())[0]
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port = pp[p]
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self.server_host.setText(host)
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self.server_port.setText(port)
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self.set_protocol(p)
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self.set_server()
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def follow_branch(self, chain_id):
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self.network.run_from_another_thread(self.network.follow_chain_given_id(chain_id))
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self.update()
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def follow_server(self, server):
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self.network.run_from_another_thread(self.network.follow_chain_given_server(server))
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self.update()
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def server_changed(self, x):
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if x:
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self.change_server(str(x.text(0)), self.protocol)
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def change_server(self, host, protocol):
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pp = self.servers.get(host, constants.net.DEFAULT_PORTS)
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if protocol and protocol not in protocol_letters:
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protocol = None
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if protocol:
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port = pp.get(protocol)
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if port is None:
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protocol = None
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if not protocol:
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if 's' in pp.keys():
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protocol = 's'
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port = pp.get(protocol)
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else:
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protocol = list(pp.keys())[0]
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port = pp.get(protocol)
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self.server_host.setText(host)
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self.server_port.setText(port)
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def accept(self):
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pass
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def set_server(self):
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net_params = self.network.get_parameters()
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net_params = net_params._replace(host=str(self.server_host.text()),
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port=str(self.server_port.text()),
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|
auto_connect=self.autoconnect_cb.isChecked())
|
|
self.network.run_from_another_thread(self.network.set_parameters(net_params))
|
|
|
|
def set_proxy(self):
|
|
net_params = self.network.get_parameters()
|
|
if self.proxy_cb.isChecked():
|
|
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.tor_cb.setChecked(False)
|
|
net_params = net_params._replace(proxy=proxy)
|
|
self.network.run_from_another_thread(self.network.set_parameters(net_params))
|
|
|
|
def suggest_proxy(self, found_proxy):
|
|
if found_proxy is None:
|
|
self.tor_cb.hide()
|
|
return
|
|
self.tor_proxy = found_proxy
|
|
self.tor_cb.setText("Use Tor proxy at port " + str(found_proxy[1]))
|
|
if (self.proxy_cb.isChecked()
|
|
and self.proxy_mode.currentIndex() == self.proxy_mode.findText('SOCKS5')
|
|
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):
|
|
if not use_it:
|
|
self.proxy_cb.setChecked(False)
|
|
else:
|
|
socks5_mode_index = self.proxy_mode.findText('SOCKS5')
|
|
if socks5_mode_index == -1:
|
|
_logger.info("can't find proxy_mode 'SOCKS5'")
|
|
return
|
|
self.proxy_mode.setCurrentIndex(socks5_mode_index)
|
|
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.proxy_cb.setChecked(True)
|
|
self.check_disable_proxy(use_it)
|
|
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]
|
|
while True:
|
|
for p in ports:
|
|
if TorDetector.is_tor_port(p):
|
|
self.found_proxy.emit(("127.0.0.1", p))
|
|
break
|
|
else:
|
|
self.found_proxy.emit(None)
|
|
time.sleep(10)
|
|
|
|
@staticmethod
|
|
def is_tor_port(port):
|
|
try:
|
|
s = (socket._socketobject if hasattr(socket, "_socketobject") else socket.socket)(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(b"GET\n")
|
|
if b"Tor is not an HTTP Proxy" in s.recv(1024):
|
|
return True
|
|
except socket.error:
|
|
pass
|
|
return False
|
|
|