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# -*- mode: python; coding: utf-8 -*-
 
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# Mandos Monitor - Control and monitor the Mandos server
 
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# Copyright © 2009-2015 Teddy Hogeborn
 
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# Copyright © 2009-2015 Björn Påhlsson
 
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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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# Copyright © 2009-2019 Teddy Hogeborn
 
 
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# Copyright © 2009-2019 Björn Påhlsson
 
 
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# This file is part of Mandos.
 
 
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# Mandos is free software: you can redistribute it and/or modify it
 
 
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# 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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# (at your option) any later version.
 
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#     This program is distributed in the hope that it will be useful,
 
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#     but WITHOUT ANY WARRANTY; without even the implied warranty of
 
 
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#     Mandos is distributed in the hope that it will be useful, but
 
 
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#     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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# 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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# along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
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# Contact the authors at <mandos@recompile.se>.
 
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from __future__ import (division, absolute_import, print_function,
 
 
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from dbus.mainloop.glib import DBusGMainLoop
 
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    from gi.repository import GObject as gobject
 
 
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from gi.repository import GLib
 
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if sys.version_info.major == 2:
 
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locale.setlocale(locale.LC_ALL, '')
 
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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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    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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def isoformat_to_datetime(iso):
 
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    "Parse an ISO 8601 date string to a datetime.datetime()"
 
 
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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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    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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        if properties is None:
 
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            self.properties.update(
 
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                self.proxy.GetAll(client_interface,
 
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                                  = dbus.PROPERTIES_IFACE))
 
 
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            self.properties.update(self.proxy.GetAll(
 
 
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                dbus_interface=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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        # Update properties dict with new value
 
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        self.properties.update(properties)
 
 
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        if interface == client_interface:
 
 
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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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    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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                                         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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        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 = (gobject.timeout_add
 
 
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            self._update_timer_callback_tag = (GLib.timeout_add
 
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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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            gobject.source_remove(self._update_timer_callback_tag)
 
 
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            GLib.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, signal, command):
 
 
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    def checker_completed(self, exitstatus, condition, 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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        if os.WIFEXITED(condition):
 
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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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            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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            self.logger('Checker for client {} completed'
 
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                        .format(self.properties["Name"]))
 
 
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                                os.WTERMSIG(condition)))
 
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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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            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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    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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    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-standout",
 
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                          "bold-underline-blink":
 
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                              "bold-underline-blink-standout",
 
 
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        with_standout = {"normal": "standout",
 
 
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                         "bold": "bold-standout",
 
 
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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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        # 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(milliseconds
 
 
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            timeout = datetime.timedelta(
 
 
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                milliseconds=self.properties["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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        # 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 gobject. Will indefinitely loop until
 
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        gobject.source_remove() on tag is called"""
 
 
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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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        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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            gobject.source_remove(self._update_timer_callback_tag)
 
 
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            GLib.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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        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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    def keypress(self, maxcolrow, key):
 
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        This overrides the method from urwid.FlowWidget"""
 
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            self.proxy.Enable(dbus_interface = client_interface,
 
 
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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.Disable(dbus_interface = client_interface,
 
 
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            self.proxy.Set(client_interface, "Enabled", False,
 
 
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                           dbus_interface=dbus.PROPERTIES_IFACE)
 
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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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            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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                                                  ignore_reply=True)
 
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            self.proxy.StartChecker(dbus_interface = client_interface,
 
 
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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.StopChecker(dbus_interface = client_interface,
 
 
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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.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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#         elif key == "p" or 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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    def keypress(self, *args, **kwargs):
 
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        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
 
 
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        ret = (super(ConstrainedListBox, self)
 
 
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               .keypress(*args, **kwargs))
 
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        if ret in ("up", "down"):
 
 
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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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                 "default", "default", None),
 
 
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                 "standout", "default", "standout"),
 
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                ("bold-underline-blink",
 
415
 
                 "bold,underline,blink", "default", "bold,underline,blink"),
 
 
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                 "bold,underline,blink", "default",
 
 
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                 "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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        if urwid.supports_unicode():
 
427
 
            self.divider = "─" # \u2500
 
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            #self.divider = "━" # \u2501
 
 
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            self.divider = "─"  # \u2500
 
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            #self.divider = "-" # \u002d
 
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            self.divider = "_" # \u005f
 
 
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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 = urwid.SimpleListWalker([])
 
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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.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'
 
462
 
        self.main_loop = gobject.MainLoop()
 
 
468
        self.main_loop = GLib.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"""
 
473
 
        #self.uilist.append(urwid.ListBox(self.clients))
 
 
479
        # self.uilist.append(urwid.ListBox(self.clients))
 
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        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
 
476
 
                                       #header=urwid.Divider(),
 
 
482
                                       # header=urwid.Divider(),
 
479
 
                                       urwid.Divider(div_char=
 
 
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                                       footer=urwid.Divider(
 
 
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                                           div_char=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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    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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        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
 
498
 
        if (self.max_log_length
 
499
 
            and len(self.log) > self.max_log_length):
 
500
 
            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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        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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        self.logbox.set_focus(len(self.logbox.body.contents)-1,
 
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                              coming_from="above")
 
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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.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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    def find_and_remove_client(self, path, name):
 
 
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    def find_and_remove_client(self, path, interfaces):
 
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        """Find a client by its object path and remove it.
 
527
 
        This is connected to the ClientRemoved signal from the
 
 
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        This is connected to the InterfacesRemoved signal from the
 
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        Mandos server object."""
 
 
534
        if client_interface not in interfaces:
 
 
535
            # Not a Mandos client object; ignore
 
530
538
            client = self.clients_dict[path]
 
533
 
            self.log_message("Unknown client {!r} ({!r}) removed"
 
 
541
            self.log_message("Unknown client {!r} removed"
 
538
 
    def add_new_client(self, path):
 
 
546
    def add_new_client(self, path, ifs_and_props):
 
 
547
        """Find a client by its object path and remove it.
 
 
549
        This is connected to the InterfacesAdded signal from the
 
 
550
        Mandos server object.
 
 
552
        if client_interface not in ifs_and_props:
 
 
553
            # Not a Mandos client object; ignore
 
539
555
        client_proxy_object = self.bus.get_object(self.busname, path)
 
540
 
        self.add_client(MandosClientWidget(server_proxy_object
 
543
 
                                           =client_proxy_object,
 
 
556
        self.add_client(MandosClientWidget(
 
 
557
            server_proxy_object=self.mandos_serv,
 
 
558
            proxy_object=client_proxy_object,
 
 
559
            update_hook=self.refresh,
 
 
560
            delete_hook=self.remove_client,
 
 
561
            logger=self.log_message,
 
 
562
            properties=dict(ifs_and_props[client_interface])),
 
552
565
    def add_client(self, client, path=None):
 
553
566
        self.clients.append(client)
 
 
556
569
        self.clients_dict[path] = client
 
557
570
        self.clients.sort(key=lambda c: c.properties["Name"])
 
560
573
    def remove_client(self, client, path=None):
 
561
574
        self.clients.remove(client)
 
563
576
            path = client.proxy.object_path
 
564
577
        del self.clients_dict[path]
 
567
580
    def refresh(self):
 
568
581
        """Redraw the screen"""
 
569
582
        canvas = self.topwidget.render(self.size, focus=True)
 
570
583
        self.screen.draw_screen(self.size, canvas)
 
573
586
        """Start the main loop and exit when it's done."""
 
574
587
        self.bus = dbus.SystemBus()
 
575
588
        mandos_dbus_objc = self.bus.get_object(
 
576
589
            self.busname, "/", follow_name_owner_changes=True)
 
577
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
 
590
        self.mandos_serv = dbus.Interface(
 
 
591
            mandos_dbus_objc, dbus_interface=server_interface)
 
581
593
            mandos_clients = (self.mandos_serv
 
582
594
                              .GetAllClientsWithProperties())
 
583
595
            if not mandos_clients:
 
584
 
                self.log_message_raw(("bold", "Note: Server has no clients."))
 
 
596
                self.log_message_raw(("bold",
 
 
597
                                      "Note: Server has no clients."))
 
585
598
        except dbus.exceptions.DBusException:
 
586
 
            self.log_message_raw(("bold", "Note: No Mandos server running."))
 
 
599
            self.log_message_raw(("bold",
 
 
600
                                  "Note: No Mandos server running."))
 
587
601
            mandos_clients = dbus.Dictionary()
 
589
603
        (self.mandos_serv
 
590
 
         .connect_to_signal("ClientRemoved",
 
 
604
         .connect_to_signal("InterfacesRemoved",
 
591
605
                            self.find_and_remove_client,
 
592
 
                            dbus_interface=server_interface,
 
 
606
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
593
607
                            byte_arrays=True))
 
594
608
        (self.mandos_serv
 
595
 
         .connect_to_signal("ClientAdded",
 
 
609
         .connect_to_signal("InterfacesAdded",
 
596
610
                            self.add_new_client,
 
597
 
                            dbus_interface=server_interface,
 
 
611
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
598
612
                            byte_arrays=True))
 
599
613
        (self.mandos_serv
 
600
614
         .connect_to_signal("ClientNotFound",
 
 
604
618
        for path, client in mandos_clients.items():
 
605
619
            client_proxy_object = self.bus.get_object(self.busname,
 
607
 
            self.add_client(MandosClientWidget(server_proxy_object
 
610
 
                                               =client_proxy_object,
 
 
621
            self.add_client(MandosClientWidget(
 
 
622
                server_proxy_object=self.mandos_serv,
 
 
623
                proxy_object=client_proxy_object,
 
 
625
                update_hook=self.refresh,
 
 
626
                delete_hook=self.remove_client,
 
 
627
                logger=self.log_message),
 
621
 
        self._input_callback_tag = (gobject.io_add_watch
 
 
631
        self._input_callback_tag = (
 
 
633
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
 
 
634
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
 
625
636
        self.main_loop.run()
 
626
637
        # Main loop has finished, we should close everything now
 
627
 
        gobject.source_remove(self._input_callback_tag)
 
 
638
        GLib.source_remove(self._input_callback_tag)
 
628
639
        self.screen.stop()
 
631
642
        self.main_loop.quit()
 
633
644
    def process_input(self, source, condition):
 
634
645
        keys = self.screen.get_input()
 
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
 
 
646
        translations = {"ctrl n": "down",       # Emacs
 
 
647
                        "ctrl p": "up",         # Emacs
 
 
648
                        "ctrl v": "page down",  # Emacs
 
 
649
                        "meta v": "page up",    # Emacs
 
 
650
                        " ": "page down",       # less
 
 
651
                        "f": "page down",       # less
 
 
652
                        "b": "page up",         # less
 
647
658
                key = translations[key]
 
648
659
            except KeyError:    # :-)
 
651
662
            if key == "q" or key == "Q":
 
 
702
713
                    self.log_level = 0
 
703
714
                    self.log_message("Verbose mode: On")
 
704
 
            #elif (key == "end" or key == "meta >" or key == "G"
 
706
 
            #    pass            # xxx end-of-buffer
 
707
 
            #elif (key == "home" or key == "meta <" or key == "g"
 
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":
 
716
 
            #elif key == "ctrl f" or key == "meta )" or key == "l":
 
719
 
            #    pass            # scroll up log
 
721
 
            #    pass            # scroll down log
 
 
715
            # elif (key == "end" or key == "meta >" or key == "G"
 
 
717
            #     pass            # xxx end-of-buffer
 
 
718
            # elif (key == "home" or key == "meta <" or key == "g"
 
 
720
            #     pass            # xxx beginning-of-buffer
 
 
721
            # elif key == "ctrl e" or key == "$":
 
 
722
            #     pass            # xxx move-end-of-line
 
 
723
            # elif key == "ctrl a" or key == "^":
 
 
724
            #     pass            # xxx move-beginning-of-line
 
 
725
            # elif key == "ctrl b" or key == "meta (" or key == "h":
 
 
727
            # elif key == "ctrl f" or key == "meta )" or key == "l":
 
 
730
            #     pass            # scroll up log
 
 
732
            #     pass            # scroll down log
 
722
733
            elif self.topwidget.selectable():
 
723
734
                self.topwidget.keypress(self.size, key)
 
727
739
ui = UserInterface()