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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 © 2009-2019 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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# Copyright © 2009-2014 Teddy Hogeborn
 
 
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# Copyright © 2009-2014 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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# 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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#     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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#     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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#     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 Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
 
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# along with this program.  If not, see
 
 
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# <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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import urwid.curses_display
 
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from dbus.mainloop.glib import DBusGMainLoop
 
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from gi.repository import GLib
 
 
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    from gi.repository import GObject as gobject
 
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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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            self.proxy.connect_to_signal("PropertyChanged",
 
 
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                                         self._property_changed,
 
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        if properties is None:
 
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            self.properties.update(self.proxy.GetAll(
 
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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.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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    def _property_changed(self, property, value):
 
 
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        """Helper which takes positional arguments"""
 
 
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        return self.property_changed(property=property, value=value)
 
 
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    def property_changed(self, property=None, value=None):
 
 
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        """This is called whenever we get a PropertyChanged signal
 
 
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        It updates the changed property in the "properties" dict.
 
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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[property] = value
 
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    def delete(self):
 
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        self.property_changed_match.remove()
 
 
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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 = (GLib.timeout_add
 
 
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            self._update_timer_callback_tag = (gobject.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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            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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        if exitstatus == 0:
 
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            self.logger('Checker for client {} (command "{}")'
 
 
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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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        elif os.WCOREDUMP(condition):
 
 
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            self.logger('Checker for client {} (command "{}") dumped'
 
 
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                        ' core'.format(self.properties["Name"],
 
 
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            self.logger('Checker for client {} completed'
 
 
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                        .format(self.properties["Name"]))
 
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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(
 
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                milliseconds=self.properties["ApprovalDelay"])
 
 
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            timeout = datetime.timedelta(milliseconds
 
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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 GLib. Will indefinitely loop until
 
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        GLib.source_remove() on tag is called
 
 
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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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        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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        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.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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            self.proxy.Set(client_interface, "Enabled", False,
 
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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.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.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,
 
362
 
            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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            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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    def property_changed(self, property=None, **kwargs):
 
 
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        """Call self.update() if old value is not new value.
 
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        This overrides the method from MandosClientPropertyCache"""
 
381
 
        old_values = {key: self.properties.get(key)
 
382
 
                      for key in properties.keys()}
 
383
 
        super(MandosClientWidget, self).properties_changed(
 
384
 
            interface, properties, invalidated)
 
385
 
        if any(old_values[key] != self.properties.get(key)
 
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               for key in old_values):
 
 
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        property_name = str(property)
 
 
384
        old_value = self.properties.get(property_name)
 
 
385
        super(MandosClientWidget, self).property_changed(
 
 
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            property=property, **kwargs)
 
 
387
        if self.properties.get(property_name) != old_value:
 
 
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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):
 
396
 
        ret = (super(ConstrainedListBox, self)
 
397
 
               .keypress(*args, **kwargs))
 
 
397
        ret = super(ConstrainedListBox, self).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",
 
422
 
                 "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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        if urwid.supports_unicode():
 
435
 
            self.divider = "─"  # \u2500
 
 
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            self.divider = "─" # \u2500
 
 
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            #self.divider = "━" # \u2501
 
437
 
            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
 
447
 
        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)
 
456
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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
 
459
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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"))
 
467
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        self.busname = domain + '.Mandos'
 
468
 
        self.main_loop = GLib.MainLoop()
 
470
 
    def client_not_found(self, key_id, address):
 
471
 
        self.log_message("Client with address {} and key ID {} could"
 
472
 
                         " not be found".format(address, key_id))
 
 
469
        self.main_loop = gobject.MainLoop()
 
 
471
    def client_not_found(self, fingerprint, address):
 
 
472
        self.log_message("Client with address {} and fingerprint {}"
 
 
473
                         " could not be found"
 
 
474
                         .format(address, fingerprint))
 
474
476
    def rebuild(self):
 
475
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        """This rebuilds the User Interface.
 
476
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        Call this when the widget layout needs to change"""
 
478
 
        # self.uilist.append(urwid.ListBox(self.clients))
 
 
480
        #self.uilist.append(urwid.ListBox(self.clients))
 
479
481
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
 
481
 
                                       # header=urwid.Divider(),
 
 
483
                                       #header=urwid.Divider(),
 
483
 
                                       footer=urwid.Divider(
 
484
 
                                           div_char=self.divider)))
 
 
486
                                       urwid.Divider(div_char=
 
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        if self.log_visible:
 
486
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            self.uilist.append(self.logbox)
 
487
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        self.topwidget = urwid.Pile(self.uilist)
 
489
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    def log_message(self, message, level=1):
 
490
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        """Log message formatted with timestamp"""
 
491
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        if level < self.log_level:
 
 
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        timestamp = datetime.datetime.now().isoformat()
 
494
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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))
 
502
 
        if self.max_log_length:
 
503
 
            if len(self.log) > self.max_log_length:
 
504
 
                del self.log[0:len(self.log)-self.max_log_length-1]
 
505
 
        self.logbox.set_focus(len(self.logbox.body.contents)-1,
 
 
505
        if (self.max_log_length
 
 
506
            and len(self.log) > self.max_log_length):
 
 
507
            del self.log[0:len(self.log)-self.max_log_length-1]
 
 
508
        self.logbox.set_focus(len(self.logbox.body.contents),
 
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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),
 
528
 
    def find_and_remove_client(self, path, interfaces):
 
 
531
    def find_and_remove_client(self, path, name):
 
529
532
        """Find a client by its object path and remove it.
 
531
 
        This is connected to the InterfacesRemoved signal from the
 
 
534
        This is connected to the ClientRemoved signal from the
 
532
535
        Mandos server object."""
 
533
 
        if client_interface not in interfaces:
 
534
 
            # Not a Mandos client object; ignore
 
537
537
            client = self.clients_dict[path]
 
540
 
            self.log_message("Unknown client {!r} removed"
 
 
540
            self.log_message("Unknown client {!r} ({!r}) removed"
 
545
 
    def add_new_client(self, path, ifs_and_props):
 
546
 
        """Find a client by its object path and remove it.
 
548
 
        This is connected to the InterfacesAdded signal from the
 
549
 
        Mandos server object.
 
551
 
        if client_interface not in ifs_and_props:
 
552
 
            # Not a Mandos client object; ignore
 
 
545
    def add_new_client(self, path):
 
554
546
        client_proxy_object = self.bus.get_object(self.busname, path)
 
555
 
        self.add_client(MandosClientWidget(
 
556
 
            server_proxy_object=self.mandos_serv,
 
557
 
            proxy_object=client_proxy_object,
 
558
 
            update_hook=self.refresh,
 
559
 
            delete_hook=self.remove_client,
 
560
 
            logger=self.log_message,
 
561
 
            properties=dict(ifs_and_props[client_interface])),
 
 
547
        self.add_client(MandosClientWidget(server_proxy_object
 
 
550
                                           =client_proxy_object,
 
564
559
    def add_client(self, client, path=None):
 
565
560
        self.clients.append(client)
 
 
568
563
        self.clients_dict[path] = client
 
569
564
        self.clients.sort(key=lambda c: c.properties["Name"])
 
572
567
    def remove_client(self, client, path=None):
 
573
568
        self.clients.remove(client)
 
575
570
            path = client.proxy.object_path
 
576
571
        del self.clients_dict[path]
 
579
574
    def refresh(self):
 
580
575
        """Redraw the screen"""
 
581
576
        canvas = self.topwidget.render(self.size, focus=True)
 
582
577
        self.screen.draw_screen(self.size, canvas)
 
585
580
        """Start the main loop and exit when it's done."""
 
586
581
        self.bus = dbus.SystemBus()
 
587
582
        mandos_dbus_objc = self.bus.get_object(
 
588
583
            self.busname, "/", follow_name_owner_changes=True)
 
589
 
        self.mandos_serv = dbus.Interface(
 
590
 
            mandos_dbus_objc, dbus_interface=server_interface)
 
 
584
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
592
588
            mandos_clients = (self.mandos_serv
 
593
589
                              .GetAllClientsWithProperties())
 
594
590
            if not mandos_clients:
 
595
 
                self.log_message_raw(("bold",
 
596
 
                                      "Note: Server has no clients."))
 
 
591
                self.log_message_raw(("bold", "Note: Server has no clients."))
 
597
592
        except dbus.exceptions.DBusException:
 
598
 
            self.log_message_raw(("bold",
 
599
 
                                  "Note: No Mandos server running."))
 
 
593
            self.log_message_raw(("bold", "Note: No Mandos server running."))
 
600
594
            mandos_clients = dbus.Dictionary()
 
602
596
        (self.mandos_serv
 
603
 
         .connect_to_signal("InterfacesRemoved",
 
 
597
         .connect_to_signal("ClientRemoved",
 
604
598
                            self.find_and_remove_client,
 
605
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
 
599
                            dbus_interface=server_interface,
 
606
600
                            byte_arrays=True))
 
607
601
        (self.mandos_serv
 
608
 
         .connect_to_signal("InterfacesAdded",
 
 
602
         .connect_to_signal("ClientAdded",
 
609
603
                            self.add_new_client,
 
610
 
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
 
604
                            dbus_interface=server_interface,
 
611
605
                            byte_arrays=True))
 
612
606
        (self.mandos_serv
 
613
607
         .connect_to_signal("ClientNotFound",
 
 
617
611
        for path, client in mandos_clients.items():
 
618
612
            client_proxy_object = self.bus.get_object(self.busname,
 
620
 
            self.add_client(MandosClientWidget(
 
621
 
                server_proxy_object=self.mandos_serv,
 
622
 
                proxy_object=client_proxy_object,
 
624
 
                update_hook=self.refresh,
 
625
 
                delete_hook=self.remove_client,
 
626
 
                logger=self.log_message),
 
 
614
            self.add_client(MandosClientWidget(server_proxy_object
 
 
617
                                               =client_proxy_object,
 
630
 
        self._input_callback_tag = (
 
632
 
                GLib.IOChannel.unix_new(sys.stdin.fileno()),
 
633
 
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
 
 
628
        self._input_callback_tag = (gobject.io_add_watch
 
635
632
        self.main_loop.run()
 
636
633
        # Main loop has finished, we should close everything now
 
637
 
        GLib.source_remove(self._input_callback_tag)
 
638
 
        with warnings.catch_warnings():
 
639
 
            warnings.simplefilter("ignore", BytesWarning)
 
 
634
        gobject.source_remove(self._input_callback_tag)
 
643
638
        self.main_loop.quit()
 
645
640
    def process_input(self, source, condition):
 
646
641
        keys = self.screen.get_input()
 
647
 
        translations = {"ctrl n": "down",       # Emacs
 
648
 
                        "ctrl p": "up",         # Emacs
 
649
 
                        "ctrl v": "page down",  # Emacs
 
650
 
                        "meta v": "page up",    # Emacs
 
651
 
                        " ": "page down",       # less
 
652
 
                        "f": "page down",       # less
 
653
 
                        "b": "page up",         # less
 
 
642
        translations = { "ctrl n": "down",      # Emacs
 
 
643
                         "ctrl p": "up",        # Emacs
 
 
644
                         "ctrl v": "page down", # Emacs
 
 
645
                         "meta v": "page up",   # Emacs
 
 
646
                         " ": "page down",      # less
 
 
647
                         "f": "page down",      # less
 
 
648
                         "b": "page up",        # less
 
659
654
                key = translations[key]
 
660
655
            except KeyError:    # :-)
 
663
658
            if key == "q" or key == "Q":
 
 
714
709
                    self.log_level = 0
 
715
710
                    self.log_message("Verbose mode: On")
 
716
 
            # elif (key == "end" or key == "meta >" or key == "G"
 
718
 
            #     pass            # xxx end-of-buffer
 
719
 
            # elif (key == "home" or key == "meta <" or key == "g"
 
721
 
            #     pass            # xxx beginning-of-buffer
 
722
 
            # elif key == "ctrl e" or key == "$":
 
723
 
            #     pass            # xxx move-end-of-line
 
724
 
            # elif key == "ctrl a" or key == "^":
 
725
 
            #     pass            # xxx move-beginning-of-line
 
726
 
            # elif key == "ctrl b" or key == "meta (" or key == "h":
 
728
 
            # elif key == "ctrl f" or key == "meta )" or key == "l":
 
731
 
            #     pass            # scroll up log
 
733
 
            #     pass            # scroll down log
 
 
711
            #elif (key == "end" or key == "meta >" or key == "G"
 
 
713
            #    pass            # xxx end-of-buffer
 
 
714
            #elif (key == "home" or key == "meta <" or key == "g"
 
 
716
            #    pass            # xxx beginning-of-buffer
 
 
717
            #elif key == "ctrl e" or key == "$":
 
 
718
            #    pass            # xxx move-end-of-line
 
 
719
            #elif key == "ctrl a" or key == "^":
 
 
720
            #    pass            # xxx move-beginning-of-line
 
 
721
            #elif key == "ctrl b" or key == "meta (" or key == "h":
 
 
723
            #elif key == "ctrl f" or key == "meta )" or key == "l":
 
 
726
            #    pass            # scroll up log
 
 
728
            #    pass            # scroll down log
 
734
729
            elif self.topwidget.selectable():
 
735
730
                self.topwidget.keypress(self.size, key)
 
740
734
ui = UserInterface()