/mandos/trunk : revision 770

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#!/usr/bin/python

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# -*- mode: python; coding: utf-8 -*-

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#

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#

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# Mandos Monitor - Control and monitor the Mandos server

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#

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#

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#

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#

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# This program is free software: you can redistribute it and/or modify

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# it under the terms of the GNU General Public License as published by

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# the Free Software Foundation, either version 3 of the License, or

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# but WITHOUT ANY WARRANTY; without even the implied warranty of

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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#

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# You should have received a copy of the GNU General Public License

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# along with this program. If not, see

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# <http://www.gnu.org/licenses/>.

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#

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#

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# Contact the authors at <mandos@recompile.se>.

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#

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#

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from __future__ import (division, absolute_import, print_function,

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unicode_literals)

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import urwid

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from dbus.mainloop.glib import DBusGMainLoop

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from gi.repository import GLib

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try:

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import gobject

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except ImportError:

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from gi.repository import GObject as gobject

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import dbus

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import locale

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import logging

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if sys.version_info.major == 2:

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str = unicode

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locale.setlocale(locale.LC_ALL, '')

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import logging

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logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)

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# Some useful constants

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domain = 'se.recompile'

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server_interface = domain + '.Mandos'

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client_interface = domain + '.Mandos.Client'

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version = "1.7.11"

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try:

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dbus.OBJECT_MANAGER_IFACE

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except AttributeError:

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dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"

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version = "1.6.9"

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def isoformat_to_datetime(iso):

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"Parse an ISO 8601 date string to a datetime.datetime()"

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int(day),

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int(hour),

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int(minute),

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int(second), # Whole seconds

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int(fraction*1000000)) # Microseconds

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int(second), # Whole seconds

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int(fraction*1000000)) # Microseconds

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class MandosClientPropertyCache(object):

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"""This wraps a Mandos Client D-Bus proxy object, caches the

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changed.

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"""

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def __init__(self, proxy_object=None, properties=None, **kwargs):

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self.proxy = proxy_object # Mandos Client proxy object

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self.proxy = proxy_object # Mandos Client proxy object

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self.properties = dict() if properties is None else properties

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self.property_changed_match = (

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self.proxy.connect_to_signal("PropertiesChanged",

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self.properties_changed,

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dbus.PROPERTIES_IFACE,

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byte_arrays=True))

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if properties is None:

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self.properties.update(self.proxy.GetAll(

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client_interface,

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dbus_interface=dbus.PROPERTIES_IFACE))

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self.properties.update(

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self.proxy.GetAll(client_interface,

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dbus_interface

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= dbus.PROPERTIES_IFACE))

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super(MandosClientPropertyCache, self).__init__(**kwargs)

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def properties_changed(self, interface, properties, invalidated):

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"""This is called whenever we get a PropertiesChanged signal

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It updates the changed properties in the "properties" dict.

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"""

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# Update properties dict with new value

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if interface == client_interface:

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self.properties.update(properties)

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self.properties.update(properties)

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def delete(self):

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self.property_changed_match.remove()

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class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):

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"""A Mandos Client which is visible on the screen.

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"""

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def __init__(self, server_proxy_object=None, update_hook=None,

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delete_hook=None, logger=None, **kwargs):

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# Called on update

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self.server_proxy_object = server_proxy_object

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# Logger

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self.logger = logger

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self._update_timer_callback_tag = None

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# The widget shown normally

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self._text_widget = urwid.Text("")

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# The widget shown when we have focus

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super(MandosClientWidget, self).__init__(**kwargs)

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self.update()

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self.opened = False

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self.match_objects = (

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self.proxy.connect_to_signal("CheckerCompleted",

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self.checker_completed,

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byte_arrays=True))

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self.logger('Created client {}'

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.format(self.properties["Name"]), level=0)

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def using_timer(self, flag):

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"""Call this method with True or False when timer should be

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activated or deactivated.

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"""

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if flag and self._update_timer_callback_tag is None:

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# Will update the shown timer value every second

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self._update_timer_callback_tag = (GLib.timeout_add

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self._update_timer_callback_tag = (gobject.timeout_add

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(1000,

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self.update_timer))

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elif not (flag or self._update_timer_callback_tag is None):

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GLib.source_remove(self._update_timer_callback_tag)

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gobject.source_remove(self._update_timer_callback_tag)

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self._update_timer_callback_tag = None

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def checker_completed(self, exitstatus, condition, command):

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def checker_completed(self, exitstatus, signal, command):

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if exitstatus == 0:

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self.logger('Checker for client {} (command "{}")'

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' succeeded'.format(self.properties["Name"],

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self.update()

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return

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# Checker failed

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if os.WIFEXITED(condition):

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if exitstatus >= 0:

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self.logger('Checker for client {} (command "{}") failed'

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' with exit code {}'

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.format(self.properties["Name"], command,

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os.WEXITSTATUS(condition)))

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elif os.WIFSIGNALED(condition):

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exitstatus))

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elif signal != 0:

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self.logger('Checker for client {} (command "{}") was'

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' killed by signal {}'

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.format(self.properties["Name"], command,

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os.WTERMSIG(condition)))

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signal))

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else:

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self.logger('Checker for client {} completed'

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' mysteriously'

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.format(self.properties["Name"]))

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self.update()

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def checker_started(self, command):

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"""Server signals that a checker started."""

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self.logger('Client {} started checker "{}"'

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.format(self.properties["Name"],

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command), level=0)

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def got_secret(self):

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self.logger('Client {} received its secret'

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.format(self.properties["Name"]))

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def need_approval(self, timeout, default):

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if not default:

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message = 'Client {} needs approval within {} seconds'

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message = 'Client {} will get its secret in {} seconds'

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self.logger(message.format(self.properties["Name"],

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timeout/1000))

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def rejected(self, reason):

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self.logger('Client {} was rejected; reason: {}'

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.format(self.properties["Name"], reason))

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def selectable(self):

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"""Make this a "selectable" widget.

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This overrides the method from urwid.FlowWidget."""

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return True

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def rows(self, maxcolrow, focus=False):

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"""How many rows this widget will occupy might depend on

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whether we have focus or not.

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This overrides the method from urwid.FlowWidget"""

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return self.current_widget(focus).rows(maxcolrow, focus=focus)

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def current_widget(self, focus=False):

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if focus or self.opened:

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return self._focus_widget

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return self._widget

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def update(self):

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"Called when what is visible on the screen should be updated."

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# How to add standout mode to a style

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with_standout = {"normal": "standout",

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"bold": "bold-standout",

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"underline-blink":

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"underline-blink-standout",

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"bold-underline-blink":

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"bold-underline-blink-standout",

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}

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with_standout = { "normal": "standout",

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"bold": "bold-standout",

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"underline-blink":

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"underline-blink-standout",

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"bold-underline-blink":

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"bold-underline-blink-standout",

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}

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# Rebuild focus and non-focus widgets using current properties

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# Base part of a client. Name!

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base = '{name}: '.format(name=self.properties["Name"])

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if not self.properties["Enabled"]:

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message = "DISABLED"

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self.using_timer(False)

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elif self.properties["ApprovalPending"]:

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timeout = datetime.timedelta(

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milliseconds=self.properties["ApprovalDelay"])

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timeout = datetime.timedelta(milliseconds

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= self.properties

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["ApprovalDelay"])

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last_approval_request = isoformat_to_datetime(

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self.properties["LastApprovalRequest"])

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if last_approval_request is not None:

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message = "enabled"

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self.using_timer(False)

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self._text = "{}{}".format(base, message)

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if not urwid.supports_unicode():

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self._text = self._text.encode("ascii", "replace")

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textlist = [("normal", self._text)]

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# Run update hook, if any

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if self.update_hook is not None:

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self.update_hook()

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def update_timer(self):

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"""called by GLib. Will indefinitely loop until

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GLib.source_remove() on tag is called

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"""

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"""called by gobject. Will indefinitely loop until

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gobject.source_remove() on tag is called"""

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self.update()

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return True # Keep calling this

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def delete(self, **kwargs):

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if self._update_timer_callback_tag is not None:

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GLib.source_remove(self._update_timer_callback_tag)

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gobject.source_remove(self._update_timer_callback_tag)

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self._update_timer_callback_tag = None

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for match in self.match_objects:

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match.remove()

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if self.delete_hook is not None:

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self.delete_hook(self)

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return super(MandosClientWidget, self).delete(**kwargs)

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def render(self, maxcolrow, focus=False):

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"""Render differently if we have focus.

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This overrides the method from urwid.FlowWidget"""

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return self.current_widget(focus).render(maxcolrow,

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focus=focus)

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def keypress(self, maxcolrow, key):

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"""Handle keys.

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This overrides the method from urwid.FlowWidget"""

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if key == "+":

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self.proxy.Set(client_interface, "Enabled",

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dbus.Boolean(True), ignore_reply=True,

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dbus_interface=dbus.PROPERTIES_IFACE)

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self.proxy.Enable(dbus_interface = client_interface,

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ignore_reply=True)

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elif key == "-":

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self.proxy.Set(client_interface, "Enabled", False,

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ignore_reply=True,

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dbus_interface=dbus.PROPERTIES_IFACE)

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self.proxy.Disable(dbus_interface = client_interface,

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ignore_reply=True)

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elif key == "a":

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self.proxy.Approve(dbus.Boolean(True, variant_level=1),

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dbus_interface=client_interface,

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dbus_interface = client_interface,

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ignore_reply=True)

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elif key == "d":

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self.proxy.Approve(dbus.Boolean(False, variant_level=1),

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dbus_interface=client_interface,

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dbus_interface = client_interface,

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ignore_reply=True)

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elif key == "R" or key == "_" or key == "ctrl k":

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self.server_proxy_object.RemoveClient(self.proxy

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.object_path,

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ignore_reply=True)

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elif key == "s":

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self.proxy.Set(client_interface, "CheckerRunning",

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dbus.Boolean(True), ignore_reply=True,

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dbus_interface=dbus.PROPERTIES_IFACE)

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self.proxy.StartChecker(dbus_interface = client_interface,

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ignore_reply=True)

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elif key == "S":

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self.proxy.Set(client_interface, "CheckerRunning",

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dbus.Boolean(False), ignore_reply=True,

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dbus_interface=dbus.PROPERTIES_IFACE)

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self.proxy.StopChecker(dbus_interface = client_interface,

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ignore_reply=True)

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elif key == "C":

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self.proxy.CheckedOK(dbus_interface=client_interface,

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self.proxy.CheckedOK(dbus_interface = client_interface,

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ignore_reply=True)

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# xxx

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# elif key == "p" or key == "=":

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# self.open()

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else:

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return key

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def properties_changed(self, interface, properties, invalidated):

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"""Call self.update() if any properties changed.

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This overrides the method from MandosClientPropertyCache"""

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old_values = {key: self.properties.get(key)

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for key in properties.keys()}

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old_values = { key: self.properties.get(key)

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for key in properties.keys() }

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super(MandosClientWidget, self).properties_changed(

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interface, properties, invalidated)

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if any(old_values[key] != self.properties.get(key)

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use them as an excuse to shift focus away from this widget.

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"""

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def keypress(self, *args, **kwargs):

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ret = (super(ConstrainedListBox, self)

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.keypress(*args, **kwargs))

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ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)

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if ret in ("up", "down"):

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return

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return ret

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"""

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def __init__(self, max_log_length=1000, log_level=1):

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DBusGMainLoop(set_as_default=True)

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self.screen = urwid.curses_display.Screen()

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self.screen.register_palette((

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("normal",

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"default", "default", None),

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("standout",

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"standout", "default", "standout"),

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("bold-underline-blink",

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"bold,underline,blink", "default",

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"bold,underline,blink"),

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"bold,underline,blink", "default", "bold,underline,blink"),

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("bold-standout",

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"bold,standout", "default", "bold,standout"),

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("underline-blink-standout",

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"bold,underline,blink,standout", "default",

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"bold,underline,blink,standout"),

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))

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if urwid.supports_unicode():

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self.divider = "─" # \u2500

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self.divider = "─" # \u2500

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#self.divider = "━" # \u2501

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else:

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self.divider = "_" # \u005f

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#self.divider = "-" # \u002d

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self.divider = "_" # \u005f

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self.screen.start()

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self.size = self.screen.get_cols_rows()

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self.clients = urwid.SimpleListWalker([])

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self.clients_dict = {}

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# We will add Text widgets to this list

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self.log = []

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self.max_log_length = max_log_length

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self.log_level = log_level

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# We keep a reference to the log widget so we can remove it

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# from the ListWalker without it getting destroyed

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self.logbox = ConstrainedListBox(self.log)

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# This keeps track of whether self.uilist currently has

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# self.logbox in it or not

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self.log_visible = True

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self.log_wrap = "any"

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self.rebuild()

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self.log_message_raw(("bold",

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"Mandos Monitor version " + version))

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self.log_message_raw(("bold",

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"q: Quit ?: Help"))

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self.busname = domain + '.Mandos'

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self.main_loop = GLib.MainLoop()

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self.main_loop = gobject.MainLoop()

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def client_not_found(self, fingerprint, address):

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self.log_message("Client with address {} and fingerprint {}"

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" could not be found"

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.format(address, fingerprint))

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def rebuild(self):

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"""This rebuilds the User Interface.

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Call this when the widget layout needs to change"""

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self.uilist = []

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# self.uilist.append(urwid.ListBox(self.clients))

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#self.uilist.append(urwid.ListBox(self.clients))

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self.uilist.append(urwid.Frame(ConstrainedListBox(self.

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clients),

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# header=urwid.Divider(),

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#header=urwid.Divider(),

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header=None,

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footer=urwid.Divider(

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div_char=self.divider)))

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footer=

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urwid.Divider(div_char=

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self.divider)))

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if self.log_visible:

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self.uilist.append(self.logbox)

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self.topwidget = urwid.Pile(self.uilist)

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def log_message(self, message, level=1):

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"""Log message formatted with timestamp"""

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if level < self.log_level:

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timestamp = datetime.datetime.now().isoformat()

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self.log_message_raw("{}: {}".format(timestamp, message),

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level=level)

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def log_message_raw(self, markup, level=1):

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"""Add a log message to the log buffer."""

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if level < self.log_level:

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return

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self.log.append(urwid.Text(markup, wrap=self.log_wrap))

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if self.max_log_length:

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if len(self.log) > self.max_log_length:

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del self.log[0:len(self.log)-self.max_log_length-1]

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if (self.max_log_length

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and len(self.log) > self.max_log_length):

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del self.log[0:len(self.log)-self.max_log_length-1]

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self.logbox.set_focus(len(self.logbox.body.contents),

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coming_from="above")

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self.refresh()

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def toggle_log_display(self):

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"""Toggle visibility of the log buffer."""

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self.log_visible = not self.log_visible

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self.rebuild()

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self.log_message("Log visibility changed to: {}"

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.format(self.log_visible), level=0)

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def change_log_display(self):

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"""Change type of log display.

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Currently, this toggles wrapping of text lines."""

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textwidget.set_wrap_mode(self.log_wrap)

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self.log_message("Wrap mode: {}".format(self.log_wrap),

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level=0)

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def find_and_remove_client(self, path, interfaces):

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def find_and_remove_client(self, path, name):

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"""Find a client by its object path and remove it.

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This is connected to the InterfacesRemoved signal from the

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This is connected to the ClientRemoved signal from the

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Mandos server object."""

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if client_interface not in interfaces:

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# Not a Mandos client object; ignore

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return

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try:

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client = self.clients_dict[path]

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531

except KeyError:

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# not found?

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self.log_message("Unknown client {!r} removed"

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.format(path))

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self.log_message("Unknown client {!r} ({!r}) removed"

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.format(name, path))

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return

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client.delete()

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def add_new_client(self, path, ifs_and_props):

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"""Find a client by its object path and remove it.

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This is connected to the InterfacesAdded signal from the

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Mandos server object.

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"""

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if client_interface not in ifs_and_props:

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# Not a Mandos client object; ignore

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return

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def add_new_client(self, path):

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client_proxy_object = self.bus.get_object(self.busname, path)

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self.add_client(MandosClientWidget(

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server_proxy_object=self.mandos_serv,

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proxy_object=client_proxy_object,

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update_hook=self.refresh,

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delete_hook=self.remove_client,

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logger=self.log_message,

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properties=dict(ifs_and_props[client_interface])),

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self.add_client(MandosClientWidget(server_proxy_object

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=self.mandos_serv,

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proxy_object

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=client_proxy_object,

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update_hook

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=self.refresh,

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delete_hook

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=self.remove_client,

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logger

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=self.log_message),

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path=path)

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551

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def add_client(self, client, path=None):

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self.clients.append(client)

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if path is None:

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self.clients_dict[path] = client

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self.clients.sort(key=lambda c: c.properties["Name"])

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self.refresh()

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def remove_client(self, client, path=None):

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self.clients.remove(client)

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if path is None:

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path = client.proxy.object_path

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del self.clients_dict[path]

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self.refresh()

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566

579

567

def refresh(self):

580

568

"""Redraw the screen"""

581

569

canvas = self.topwidget.render(self.size, focus=True)

582

570

self.screen.draw_screen(self.size, canvas)

583

571

584

572

def run(self):

585

573

"""Start the main loop and exit when it's done."""

586

574

self.bus = dbus.SystemBus()

587

575

mandos_dbus_objc = self.bus.get_object(

588

576

self.busname, "/", follow_name_owner_changes=True)

589

self.mandos_serv = dbus.Interface(

590

mandos_dbus_objc, dbus_interface=server_interface)

577

self.mandos_serv = dbus.Interface(mandos_dbus_objc,

578

dbus_interface

579

= server_interface)

591

580

try:

592

581

mandos_clients = (self.mandos_serv

593

582

.GetAllClientsWithProperties())

594

583

if not mandos_clients:

595

self.log_message_raw(("bold",

596

"Note: Server has no clients."))

584

self.log_message_raw(("bold", "Note: Server has no clients."))

597

585

except dbus.exceptions.DBusException:

598

self.log_message_raw(("bold",

599

"Note: No Mandos server running."))

586

self.log_message_raw(("bold", "Note: No Mandos server running."))

600

587

mandos_clients = dbus.Dictionary()

601

588

602

589

(self.mandos_serv

603

.connect_to_signal("InterfacesRemoved",

590

.connect_to_signal("ClientRemoved",

604

591

self.find_and_remove_client,

605

dbus_interface=dbus.OBJECT_MANAGER_IFACE,

592

dbus_interface=server_interface,

606

593

byte_arrays=True))

607

594

(self.mandos_serv

608

.connect_to_signal("InterfacesAdded",

595

.connect_to_signal("ClientAdded",

609

596

self.add_new_client,

610

dbus_interface=dbus.OBJECT_MANAGER_IFACE,

597

dbus_interface=server_interface,

611

598

byte_arrays=True))

612

599

(self.mandos_serv

613

600

.connect_to_signal("ClientNotFound",

617

604

for path, client in mandos_clients.items():

618

605

client_proxy_object = self.bus.get_object(self.busname,

619

606

path)

620

self.add_client(MandosClientWidget(

621

server_proxy_object=self.mandos_serv,

622

proxy_object=client_proxy_object,

623

properties=client,

624

update_hook=self.refresh,

625

delete_hook=self.remove_client,

626

logger=self.log_message),

607

self.add_client(MandosClientWidget(server_proxy_object

608

=self.mandos_serv,

609

proxy_object

610

=client_proxy_object,

611

properties=client,

612

update_hook

613

=self.refresh,

614

delete_hook

615

=self.remove_client,

616

logger

617

=self.log_message),

627

618

path=path)

628

619

629

620

self.refresh()

630

self._input_callback_tag = (GLib.io_add_watch

621

self._input_callback_tag = (gobject.io_add_watch

631

622

(sys.stdin.fileno(),

632

GLib.IO_IN,

623

gobject.IO_IN,

633

624

self.process_input))

634

625

self.main_loop.run()

635

626

# Main loop has finished, we should close everything now

636

GLib.source_remove(self._input_callback_tag)

627

gobject.source_remove(self._input_callback_tag)

637

628

self.screen.stop()

638

629

639

630

def stop(self):

640

631

self.main_loop.quit()

641

632

642

633

def process_input(self, source, condition):

643

634

keys = self.screen.get_input()

644

translations = {"ctrl n": "down", # Emacs

645

"ctrl p": "up", # Emacs

646

"ctrl v": "page down", # Emacs

647

"meta v": "page up", # Emacs

648

" ": "page down", # less

649

"f": "page down", # less

650

"b": "page up", # less

651

"j": "down", # vi

652

"k": "up", # vi

653

}

635

translations = { "ctrl n": "down", # Emacs

636

"ctrl p": "up", # Emacs

637

"ctrl v": "page down", # Emacs

638

"meta v": "page up", # Emacs

639

" ": "page down", # less

640

"f": "page down", # less

641

"b": "page up", # less

642

"j": "down", # vi

643

"k": "up", # vi

644

}

654

645

for key in keys:

655

646

try:

656

647

key = translations[key]

657

648

except KeyError: # :-)

658

649

pass

659

650

660

651

if key == "q" or key == "Q":

661

652

self.stop()

662

653

break

710

701

else:

711

702

self.log_level = 0

712

703

self.log_message("Verbose mode: On")

713

# elif (key == "end" or key == "meta >" or key == "G"

714

# or key == ">"):

715

# pass # xxx end-of-buffer

716

# elif (key == "home" or key == "meta <" or key == "g"

717

# or key == "<"):

718

# pass # xxx beginning-of-buffer

719

# elif key == "ctrl e" or key == "$":

720

# pass # xxx move-end-of-line

721

# elif key == "ctrl a" or key == "^":

722

# pass # xxx move-beginning-of-line

723

# elif key == "ctrl b" or key == "meta (" or key == "h":

724

# pass # xxx left

725

# elif key == "ctrl f" or key == "meta )" or key == "l":

726

# pass # xxx right

727

# elif key == "a":

728

# pass # scroll up log

729

# elif key == "z":

730

# pass # scroll down log

704

#elif (key == "end" or key == "meta >" or key == "G"

705

# or key == ">"):

706

# pass # xxx end-of-buffer

707

#elif (key == "home" or key == "meta <" or key == "g"

708

# or key == "<"):

709

# pass # xxx beginning-of-buffer

710

#elif key == "ctrl e" or key == "$":

711

# pass # xxx move-end-of-line

712

#elif key == "ctrl a" or key == "^":

713

# pass # xxx move-beginning-of-line

714

#elif key == "ctrl b" or key == "meta (" or key == "h":

715

# pass # xxx left

716

#elif key == "ctrl f" or key == "meta )" or key == "l":

717

# pass # xxx right

718

#elif key == "a":

719

# pass # scroll up log

720

#elif key == "z":

721

# pass # scroll down log

731

722

elif self.topwidget.selectable():

732

723

self.topwidget.keypress(self.size, key)

733

724

self.refresh()