# -*- coding: utf-8 -*-
# statuspanel.py
# Copyright (C) 2013 LEAP
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see .
"""
Status Panel widget implementation
"""
import logging
from datetime import datetime
from functools import partial
from PySide import QtCore, QtGui
from ui_statuspanel import Ui_StatusPanel
from leap.common.check import leap_assert_type
from leap.services.eip.vpnprocess import VPNManager
from leap.platform_init import IS_WIN, IS_LINUX
from leap.util import first
logger = logging.getLogger(__name__)
class RateMovingAverage(object):
"""
Moving window average for calculating
upload and download rates.
"""
SAMPLE_SIZE = 5
def __init__(self):
"""
Initializes an empty array of fixed size
"""
self.reset()
def reset(self):
self._data = [None for i in xrange(self.SAMPLE_SIZE)]
def append(self, x):
"""
Appends a new data point to the collection.
:param x: A tuple containing timestamp and traffic points
in the form (timestamp, traffic)
:type x: tuple
"""
self._data.pop(0)
self._data.append(x)
def get(self):
"""
Gets the collection.
"""
return self._data
def get_average(self):
"""
Gets the moving average.
"""
data = filter(None, self.get())
traff = [traffic for (ts, traffic) in data]
times = [ts for (ts, traffic) in data]
try:
deltatraffic = traff[-1] - first(traff)
deltat = (times[-1] - first(times)).seconds
except IndexError:
deltatraffic = 0
deltat = 0
try:
rate = float(deltatraffic) / float(deltat) / 1024
except ZeroDivisionError:
rate = 0
# In some cases we get negative rates
if rate < 0:
rate = 0
return rate
def get_total(self):
"""
Gets the total accumulated throughput.
"""
try:
return self._data[-1][1] / 1024
except TypeError:
return 0
class StatusPanelWidget(QtGui.QWidget):
"""
Status widget that displays the current state of the LEAP services
"""
start_eip = QtCore.Signal()
stop_eip = QtCore.Signal()
DISPLAY_TRAFFIC_RATES = True
RATE_STR = "%14.2f KB/s"
TOTAL_STR = "%14.2f Kb"
def __init__(self, parent=None):
QtGui.QWidget.__init__(self, parent)
self._systray = None
self._action_eip_status = None
self.ui = Ui_StatusPanel()
self.ui.setupUi(self)
self.ui.btnEipStartStop.setEnabled(False)
self.ui.btnEipStartStop.clicked.connect(
self.start_eip)
self.hide_status_box()
# Set the EIP status icons
self.CONNECTING_ICON = None
self.CONNECTED_ICON = None
self.ERROR_ICON = None
self.CONNECTING_ICON_TRAY = None
self.CONNECTED_ICON_TRAY = None
self.ERROR_ICON_TRAY = None
self._set_eip_icons()
self._set_traffic_rates()
self._make_status_clickable()
def _make_status_clickable(self):
"""
Makes upload and download figures clickable.
"""
onclicked = self._on_VPN_status_clicked
self.ui.btnUpload.clicked.connect(onclicked)
self.ui.btnDownload.clicked.connect(onclicked)
def _on_VPN_status_clicked(self):
"""
SLOT
TRIGGER: self.ui.btnUpload.clicked
self.ui.btnDownload.clicked
Toggles between rate and total throughput display for vpn
status figures.
"""
self.DISPLAY_TRAFFIC_RATES = not self.DISPLAY_TRAFFIC_RATES
self.update_vpn_status(None) # refresh
def _set_traffic_rates(self):
"""
Initializes up and download rates.
"""
self._up_rate = RateMovingAverage()
self._down_rate = RateMovingAverage()
self.ui.btnUpload.setText(self.RATE_STR % (0,))
self.ui.btnDownload.setText(self.RATE_STR % (0,))
def _reset_traffic_rates(self):
"""
Resets up and download rates, and cleans up the labels.
"""
self._up_rate.reset()
self._down_rate.reset()
self.update_vpn_status(None)
def _update_traffic_rates(self, up, down):
"""
Updates up and download rates.
:param up: upload total.
:type up: int
:param down: download total.
:type down: int
"""
ts = datetime.now()
self._up_rate.append((ts, up))
self._down_rate.append((ts, down))
def _get_traffic_rates(self):
"""
Gets the traffic rates (in KB/s).
:returns: a tuple with the (up, down) rates
:rtype: tuple
"""
up = self._up_rate
down = self._down_rate
return (up.get_average(), down.get_average())
def _get_traffic_totals(self):
"""
Gets the traffic total throughput (in Kb).
:returns: a tuple with the (up, down) totals
:rtype: tuple
"""
up = self._up_rate
down = self._down_rate
return (up.get_total(), down.get_total())
def _set_eip_icons(self):
"""
Sets the EIP status icons for the main window and for the tray
MAC : dark icons
LINUX : dark icons in window, light icons in tray
WIN : light icons
"""
EIP_ICONS = EIP_ICONS_TRAY = (
":/images/conn_connecting-light.png",
":/images/conn_connected-light.png",
":/images/conn_error-light.png")
if IS_LINUX:
EIP_ICONS_TRAY = (
":/images/conn_connecting.png",
":/images/conn_connected.png",
":/images/conn_error.png")
elif IS_WIN:
EIP_ICONS = EIP_ICONS_TRAY = (
":/images/conn_connecting.png",
":/images/conn_connected.png",
":/images/conn_error.png")
self.CONNECTING_ICON = QtGui.QPixmap(EIP_ICONS[0])
self.CONNECTED_ICON = QtGui.QPixmap(EIP_ICONS[1])
self.ERROR_ICON = QtGui.QPixmap(EIP_ICONS[2])
self.CONNECTING_ICON_TRAY = QtGui.QPixmap(EIP_ICONS_TRAY[0])
self.CONNECTED_ICON_TRAY = QtGui.QPixmap(EIP_ICONS_TRAY[1])
self.ERROR_ICON_TRAY = QtGui.QPixmap(EIP_ICONS_TRAY[2])
def set_systray(self, systray):
"""
Sets the systray object to use.
:param systray: Systray object
:type systray: QtGui.QSystemTrayIcon
"""
leap_assert_type(systray, QtGui.QSystemTrayIcon)
self._systray = systray
def set_action_eip_startstop(self, action_eip_startstop):
"""
Sets the action_eip_startstop to use.
:param action_eip_startstop: action_eip_status to be used
:type action_eip_startstop: QtGui.QAction
"""
self._action_eip_startstop = action_eip_startstop
def set_action_eip_status(self, action_eip_status):
"""
Sets the action_eip_status to use.
:param action_eip_status: action_eip_status to be used
:type action_eip_status: QtGui.QAction
"""
leap_assert_type(action_eip_status, QtGui.QAction)
self._action_eip_status = action_eip_status
def set_global_status(self, status, error=False):
"""
Sets the global status label.
:param status: status message
:type status: str or unicode
:param error: if the status is an erroneous one, then set this
to True
:type error: bool
"""
leap_assert_type(error, bool)
if error:
status = "%s" % (status,)
self.ui.lblGlobalStatus.setText(status)
self.ui.globalStatusBox.show()
def hide_status_box(self):
"""
Hide global status box.
"""
self.ui.globalStatusBox.hide()
def set_eip_status(self, status, error=False):
"""
Sets the status label at the VPN stage to status
:param status: status message
:type status: str or unicode
:param error: if the status is an erroneous one, then set this
to True
:type error: bool
"""
leap_assert_type(error, bool)
self._systray.setToolTip(status)
if error:
status = "%s" % (status,)
self.ui.lblEIPStatus.setText(status)
def set_startstop_enabled(self, value):
"""
Enable or disable btnEipStartStop and _action_eip_startstop
based on value
:param value: True for enabled, False otherwise
:type value: bool
"""
leap_assert_type(value, bool)
self.ui.btnEipStartStop.setEnabled(value)
self._action_eip_startstop.setEnabled(value)
def eip_pre_up(self):
"""
Triggered when the app activates eip.
Hides the status box and disables the start/stop button.
"""
self.hide_status_box()
self.set_startstop_enabled(False)
def eip_started(self):
"""
Sets the state of the widget to how it should look after EIP
has started
"""
self.ui.btnEipStartStop.setText(self.tr("Turn OFF"))
self.ui.btnEipStartStop.disconnect(self)
self.ui.btnEipStartStop.clicked.connect(
self.stop_eip)
def eip_stopped(self):
"""
Sets the state of the widget to how it should look after EIP
has stopped
"""
self._reset_traffic_rates()
self.ui.btnEipStartStop.setText(self.tr("Turn ON"))
self.ui.btnEipStartStop.disconnect(self)
self.ui.btnEipStartStop.clicked.connect(
self.start_eip)
def set_icon(self, icon):
"""
Sets the icon to display for EIP
:param icon: icon to display
:type icon: QPixmap
"""
self.ui.lblVPNStatusIcon.setPixmap(icon)
def update_vpn_status(self, data):
"""
SLOT
TRIGGER: VPN.status_changed
Updates the download/upload labels based on the data provided
by the VPN thread.
:param data: a dictionary with the tcp/udp write and read totals.
If data is None, we just will refresh the display based
on the previous data.
:type data: dict
"""
if data:
upload = float(data[VPNManager.TCPUDP_WRITE_KEY] or "0")
download = float(data[VPNManager.TCPUDP_READ_KEY] or "0")
self._update_traffic_rates(upload, download)
if self.DISPLAY_TRAFFIC_RATES:
uprate, downrate = self._get_traffic_rates()
upload_str = self.RATE_STR % (uprate,)
download_str = self.RATE_STR % (downrate,)
else: # display total throughput
uptotal, downtotal = self._get_traffic_totals()
upload_str = self.TOTAL_STR % (uptotal,)
download_str = self.TOTAL_STR % (downtotal,)
self.ui.btnUpload.setText(upload_str)
self.ui.btnDownload.setText(download_str)
def update_vpn_state(self, data):
"""
SLOT
TRIGGER: VPN.state_changed
Updates the displayed VPN state based on the data provided by
the VPN thread
"""
status = data[VPNManager.STATUS_STEP_KEY]
self.set_eip_status_icon(status)
if status == "CONNECTED":
self.set_eip_status(self.tr("ON"))
# Only now we can properly enable the button.
self.set_startstop_enabled(True)
elif status == "AUTH":
self.set_eip_status(self.tr("Authenticating..."))
elif status == "GET_CONFIG":
self.set_eip_status(self.tr("Retrieving configuration..."))
elif status == "WAIT":
self.set_eip_status(self.tr("Waiting to start..."))
elif status == "ASSIGN_IP":
self.set_eip_status(self.tr("Assigning IP"))
elif status == "ALREADYRUNNING":
# Put the following calls in Qt's event queue, otherwise
# the UI won't update properly
QtCore.QTimer.singleShot(0, self.stop_eip)
QtCore.QTimer.singleShot(0, partial(self.set_global_status,
self.tr("Unable to start VPN, "
"it's already "
"running.")))
else:
self.set_eip_status(status)
def set_eip_status_icon(self, status):
"""
Given a status step from the VPN thread, set the icon properly
:param status: status step
:type status: str
"""
selected_pixmap = self.ERROR_ICON
selected_pixmap_tray = self.ERROR_ICON_TRAY
tray_message = self.tr("Encryption is OFF")
if status in ("WAIT", "AUTH", "GET_CONFIG",
"RECONNECTING", "ASSIGN_IP"):
selected_pixmap = self.CONNECTING_ICON
selected_pixmap_tray = self.CONNECTING_ICON_TRAY
tray_message = self.tr("Turning ON")
elif status in ("CONNECTED"):
tray_message = self.tr("Encryption is ON")
selected_pixmap = self.CONNECTED_ICON
selected_pixmap_tray = self.CONNECTED_ICON_TRAY
self.set_icon(selected_pixmap)
self._systray.setIcon(QtGui.QIcon(selected_pixmap_tray))
self._action_eip_status.setText(tray_message)
def set_provider(self, provider):
self.ui.lblProvider.setText(provider)