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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 © 2009-2014 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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# 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("PropertyChanged",
 
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                                         self._property_changed,
 
 
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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 _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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    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[property] = value
 
 
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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, 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(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 property_changed(self, property=None, **kwargs):
 
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        """Call self.update() if old value is not new value.
 
 
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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"""
 
383
 
        property_name = str(property)
 
384
 
        old_value = self.properties.get(property_name)
 
385
 
        super(MandosClientWidget, self).property_changed(
 
386
 
            property=property, **kwargs)
 
387
 
        if self.properties.get(property_name) != old_value:
 
 
381
        old_values = {key: self.properties.get(key)
 
 
382
                      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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               for key in old_values):
 
 
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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):
 
397
 
        ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
 
 
396
        ret = (super(ConstrainedListBox, self)
 
 
397
               .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", "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():
 
434
 
            self.divider = "─" # \u2500
 
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            #self.divider = "━" # \u2501
 
 
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            self.divider = "─"  # \u2500
 
437
 
            #self.divider = "-" # \u002d
 
438
 
            self.divider = "_" # \u005f
 
 
437
            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)
 
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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"))
 
468
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        self.busname = domain + '.Mandos'
 
469
 
        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):
 
477
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        """This rebuilds the User Interface.
 
478
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        Call this when the widget layout needs to change"""
 
480
 
        #self.uilist.append(urwid.ListBox(self.clients))
 
 
479
        # self.uilist.append(urwid.ListBox(self.clients))
 
481
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        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
 
483
 
                                       #header=urwid.Divider(),
 
 
482
                                       # header=urwid.Divider(),
 
486
 
                                       urwid.Divider(div_char=
 
 
484
                                       footer=urwid.Divider(
 
 
485
                                           div_char=self.divider)))
 
488
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        if self.log_visible:
 
489
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            self.uilist.append(self.logbox)
 
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        self.topwidget = urwid.Pile(self.uilist)
 
492
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    def log_message(self, message, level=1):
 
493
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        """Log message formatted with timestamp"""
 
494
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        if level < self.log_level:
 
 
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        timestamp = datetime.datetime.now().isoformat()
 
497
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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))
 
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),
 
 
503
        if self.max_log_length:
 
 
504
            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),
 
531
 
    def find_and_remove_client(self, path, name):
 
 
529
    def find_and_remove_client(self, path, interfaces):
 
532
530
        """Find a client by its object path and remove it.
 
534
 
        This is connected to the ClientRemoved signal from the
 
 
532
        This is connected to the InterfacesRemoved signal from the
 
535
533
        Mandos server object."""
 
 
534
        if client_interface not in interfaces:
 
 
535
            # Not a Mandos client object; ignore
 
537
538
            client = self.clients_dict[path]
 
540
 
            self.log_message("Unknown client {!r} ({!r}) removed"
 
 
541
            self.log_message("Unknown client {!r} removed"
 
545
 
    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
 
546
555
        client_proxy_object = self.bus.get_object(self.busname, path)
 
547
 
        self.add_client(MandosClientWidget(server_proxy_object
 
550
 
                                           =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])),
 
559
565
    def add_client(self, client, path=None):
 
560
566
        self.clients.append(client)
 
 
563
569
        self.clients_dict[path] = client
 
564
570
        self.clients.sort(key=lambda c: c.properties["Name"])
 
567
573
    def remove_client(self, client, path=None):
 
568
574
        self.clients.remove(client)
 
570
576
            path = client.proxy.object_path
 
571
577
        del self.clients_dict[path]
 
574
580
    def refresh(self):
 
575
581
        """Redraw the screen"""
 
576
582
        canvas = self.topwidget.render(self.size, focus=True)
 
577
583
        self.screen.draw_screen(self.size, canvas)
 
580
586
        """Start the main loop and exit when it's done."""
 
581
587
        self.bus = dbus.SystemBus()
 
582
588
        mandos_dbus_objc = self.bus.get_object(
 
583
589
            self.busname, "/", follow_name_owner_changes=True)
 
584
 
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
 
 
590
        self.mandos_serv = dbus.Interface(
 
 
591
            mandos_dbus_objc, dbus_interface=server_interface)
 
588
593
            mandos_clients = (self.mandos_serv
 
589
594
                              .GetAllClientsWithProperties())
 
590
595
            if not mandos_clients:
 
591
 
                self.log_message_raw(("bold", "Note: Server has no clients."))
 
 
596
                self.log_message_raw(("bold",
 
 
597
                                      "Note: Server has no clients."))
 
592
598
        except dbus.exceptions.DBusException:
 
593
 
            self.log_message_raw(("bold", "Note: No Mandos server running."))
 
 
599
            self.log_message_raw(("bold",
 
 
600
                                  "Note: No Mandos server running."))
 
594
601
            mandos_clients = dbus.Dictionary()
 
596
603
        (self.mandos_serv
 
597
 
         .connect_to_signal("ClientRemoved",
 
 
604
         .connect_to_signal("InterfacesRemoved",
 
598
605
                            self.find_and_remove_client,
 
599
 
                            dbus_interface=server_interface,
 
 
606
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
600
607
                            byte_arrays=True))
 
601
608
        (self.mandos_serv
 
602
 
         .connect_to_signal("ClientAdded",
 
 
609
         .connect_to_signal("InterfacesAdded",
 
603
610
                            self.add_new_client,
 
604
 
                            dbus_interface=server_interface,
 
 
611
                            dbus_interface=dbus.OBJECT_MANAGER_IFACE,
 
605
612
                            byte_arrays=True))
 
606
613
        (self.mandos_serv
 
607
614
         .connect_to_signal("ClientNotFound",
 
 
611
618
        for path, client in mandos_clients.items():
 
612
619
            client_proxy_object = self.bus.get_object(self.busname,
 
614
 
            self.add_client(MandosClientWidget(server_proxy_object
 
617
 
                                               =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),
 
628
 
        self._input_callback_tag = (gobject.io_add_watch
 
 
631
        self._input_callback_tag = (GLib.io_add_watch
 
629
632
                                    (sys.stdin.fileno(),
 
631
634
                                     self.process_input))
 
632
635
        self.main_loop.run()
 
633
636
        # Main loop has finished, we should close everything now
 
634
 
        gobject.source_remove(self._input_callback_tag)
 
 
637
        GLib.source_remove(self._input_callback_tag)
 
635
638
        self.screen.stop()
 
638
641
        self.main_loop.quit()
 
640
643
    def process_input(self, source, condition):
 
641
644
        keys = self.screen.get_input()
 
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
 
 
645
        translations = {"ctrl n": "down",       # Emacs
 
 
646
                        "ctrl p": "up",         # Emacs
 
 
647
                        "ctrl v": "page down",  # Emacs
 
 
648
                        "meta v": "page up",    # Emacs
 
 
649
                        " ": "page down",       # less
 
 
650
                        "f": "page down",       # less
 
 
651
                        "b": "page up",         # less
 
654
657
                key = translations[key]
 
655
658
            except KeyError:    # :-)
 
658
661
            if key == "q" or key == "Q":
 
 
709
712
                    self.log_level = 0
 
710
713
                    self.log_message("Verbose mode: On")
 
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
 
 
714
            # elif (key == "end" or key == "meta >" or key == "G"
 
 
716
            #     pass            # xxx end-of-buffer
 
 
717
            # elif (key == "home" or key == "meta <" or key == "g"
 
 
719
            #     pass            # xxx beginning-of-buffer
 
 
720
            # elif key == "ctrl e" or key == "$":
 
 
721
            #     pass            # xxx move-end-of-line
 
 
722
            # elif key == "ctrl a" or key == "^":
 
 
723
            #     pass            # xxx move-beginning-of-line
 
 
724
            # elif key == "ctrl b" or key == "meta (" or key == "h":
 
 
726
            # elif key == "ctrl f" or key == "meta )" or key == "l":
 
 
729
            #     pass            # scroll up log
 
 
731
            #     pass            # scroll down log
 
729
732
            elif self.topwidget.selectable():
 
730
733
                self.topwidget.keypress(self.size, key)
 
734
738
ui = UserInterface()