/mandos/trunk

To get this branch, use:
bzr branch http://bzr.recompile.se/loggerhead/mandos/trunk
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
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#!/usr/bin/python
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# -*- mode: python; coding: utf-8 -*-
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Update copyright year to "2010" wherever appropriate.
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# 
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# Mandos Monitor - Control and monitor the Mandos server
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# 
544 by Teddy Hogeborn
Updated year in copyright notices.
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# Copyright © 2009-2012 Teddy Hogeborn
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# Copyright © 2009-2012 Björn Påhlsson
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Update copyright year to "2010" wherever appropriate.
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# 
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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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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# 
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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 <http://www.gnu.org/licenses/>.
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# 
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# Contact the authors at <mandos@recompile.se>.
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# 
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
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488 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Save match tag for
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from __future__ import (division, absolute_import, print_function,
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                        unicode_literals)
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import sys
409 by Teddy Hogeborn
* mandos (MandosServer.handle_ipc): Better log message.
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import os
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import signal
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409 by Teddy Hogeborn
* mandos (MandosServer.handle_ipc): Better log message.
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import datetime
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import urwid.curses_display
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import urwid
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from dbus.mainloop.glib import DBusGMainLoop
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import gobject
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import dbus
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import UserList
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import locale
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463.1.2 by teddy at bsnet
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locale.setlocale(locale.LC_ALL, '')
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24.1.153 by Björn Påhlsson
early commit to ease todays coding
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import logging
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* mandos-monitor: Use unicode string literals. Update __future__
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logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
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early commit to ease todays coding
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404 by Teddy Hogeborn
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# Some useful constants
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transitional stuff actually working
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domain = 'se.recompile'
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server_interface = domain + '.Mandos'
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client_interface = domain + '.Mandos.Client'
237.4.20 by Björn Påhlsson
* Makefile (version): Changed to "1.4.1".
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version = "1.4.1"
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# Always run in monochrome mode
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urwid.curses_display.curses.has_colors = lambda : False
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# Urwid doesn't support blinking, but we want it.  Since we have no
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# use for underline on its own, we make underline also always blink.
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urwid.curses_display.curses.A_UNDERLINE |= (
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    urwid.curses_display.curses.A_BLINK)
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417 by Teddy Hogeborn
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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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    if not iso:
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        return None
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    d, t = iso.split("T", 1)
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    year, month, day = d.split("-", 2)
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    hour, minute, second = t.split(":", 2)
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    second, fraction = divmod(float(second), 1)
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    return datetime.datetime(int(year),
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                             int(month),
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                             int(day),
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                             int(hour),
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                             int(minute),
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                             int(second),           # Whole seconds
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                             int(fraction*1000000)) # Microseconds
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404 by Teddy Hogeborn
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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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    properties and calls a hook function when any of them are
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    changed.
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    """
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    def __init__(self, proxy_object=None, *args, **kwargs):
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        self.proxy = proxy_object # Mandos Client proxy object
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        self.properties = dict()
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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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                                         client_interface,
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                                         byte_arrays=True))
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early commit to ease todays coding
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        self.properties.update(
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            self.proxy.GetAll(client_interface,
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                              dbus_interface = dbus.PROPERTIES_IFACE))
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merge
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        #XXX This breaks good super behaviour
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merge
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#        super(MandosClientPropertyCache, self).__init__(
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#            *args, **kwargs)
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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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        """
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        # Update properties dict with new value
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        self.properties[property] = value
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    def delete(self, *args, **kwargs):
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        self.property_changed_match.remove()
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        super(MandosClientPropertyCache, self).__init__(
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            *args, **kwargs)
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class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
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    """A Mandos Client which is visible on the screen.
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    """
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    def __init__(self, server_proxy_object=None, update_hook=None,
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                 delete_hook=None, logger=None, *args, **kwargs):
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        # Called on update
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        self.update_hook = update_hook
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        # Called on delete
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        self.delete_hook = delete_hook
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        # Mandos Server proxy object
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        self.server_proxy_object = server_proxy_object
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        # Logger
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        self.logger = logger
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        self._update_timer_callback_tag = None
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        self._update_timer_callback_lock = 0
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        self.last_checker_failed = False
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        # The widget shown normally
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        self._text_widget = urwid.Text("")
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        # The widget shown when we have focus
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        self._focus_text_widget = urwid.Text("")
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        super(MandosClientWidget, self).__init__(
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            update_hook=update_hook, delete_hook=delete_hook,
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            *args, **kwargs)
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        self.update()
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        self.opened = False
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146
        last_checked_ok = isoformat_to_datetime(self.properties
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                                                ["LastCheckedOK"])
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        if last_checked_ok is None:
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            self.last_checker_failed = True
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        else:
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            self.last_checker_failed = ((datetime.datetime.utcnow()
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                                         - last_checked_ok)
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                                        > datetime.timedelta
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                                        (milliseconds=
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                                         self.properties
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                                         ["Interval"]))
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        if self.last_checker_failed:
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            self.using_timer(True)
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        if self.need_approval:
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            self.using_timer(True)
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        self.match_objects = (
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            self.proxy.connect_to_signal("CheckerCompleted",
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                                         self.checker_completed,
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                                         client_interface,
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                                         byte_arrays=True),
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            self.proxy.connect_to_signal("CheckerStarted",
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                                         self.checker_started,
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                                         client_interface,
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                                         byte_arrays=True),
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            self.proxy.connect_to_signal("GotSecret",
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                                         self.got_secret,
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                                         client_interface,
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                                         byte_arrays=True),
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            self.proxy.connect_to_signal("NeedApproval",
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                                         self.need_approval,
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                                         client_interface,
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                                         byte_arrays=True),
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            self.proxy.connect_to_signal("Rejected",
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                                         self.rejected,
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                                         client_interface,
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                                         byte_arrays=True))
185
        #self.logger('Created client %s' % (self.properties["Name"]))
442 by Teddy Hogeborn
* DBUS-API: Document new "LastApprovalRequest" client property.
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    def property_changed(self, property=None, value=None):
188
        super(self, MandosClientWidget).property_changed(property,
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                                                         value)
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        if property == "ApprovalPending":
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            using_timer(bool(value))
192
        
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    def using_timer(self, flag):
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        """Call this method with True or False when timer should be
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        activated or deactivated.
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        """
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        old = self._update_timer_callback_lock
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        if flag:
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            self._update_timer_callback_lock += 1
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        else:
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            self._update_timer_callback_lock -= 1
202
        if old == 0 and self._update_timer_callback_lock:
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New feature:
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            # Will update the shown timer value every second
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* mandos (AvahiService.entry_group_state_changed): Better debug log
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            self._update_timer_callback_tag = (gobject.timeout_add
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                                               (1000,
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                                                self.update_timer))
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* DBUS-API: Document new "LastApprovalRequest" client property.
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        elif old and self._update_timer_callback_lock == 0:
208
            gobject.source_remove(self._update_timer_callback_tag)
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            self._update_timer_callback_tag = None
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* mandos (MandosServer.handle_ipc): Better log message.
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211
    def checker_completed(self, exitstatus, condition, command):
212
        if exitstatus == 0:
417 by Teddy Hogeborn
* mandos (AvahiService.entry_group_state_changed): Better debug log
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            if self.last_checker_failed:
214
                self.last_checker_failed = False
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* DBUS-API: Document new "LastApprovalRequest" client property.
215
                self.using_timer(False)
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
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            #self.logger('Checker for client %s (command "%s")'
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            #            ' was successful'
218
            #            % (self.properties["Name"], command))
417 by Teddy Hogeborn
* mandos (AvahiService.entry_group_state_changed): Better debug log
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            self.update()
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* mandos (MandosServer.handle_ipc): Better log message.
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            return
417 by Teddy Hogeborn
* mandos (AvahiService.entry_group_state_changed): Better debug log
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        # Checker failed
222
        if not self.last_checker_failed:
223
            self.last_checker_failed = True
442 by Teddy Hogeborn
* DBUS-API: Document new "LastApprovalRequest" client property.
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            self.using_timer(True)
409 by Teddy Hogeborn
* mandos (MandosServer.handle_ipc): Better log message.
225
        if os.WIFEXITED(condition):
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
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            self.logger('Checker for client %s (command "%s")'
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                        ' failed with exit code %s'
228
                        % (self.properties["Name"], command,
409 by Teddy Hogeborn
* mandos (MandosServer.handle_ipc): Better log message.
229
                           os.WEXITSTATUS(condition)))
417 by Teddy Hogeborn
* mandos (AvahiService.entry_group_state_changed): Better debug log
230
        elif os.WIFSIGNALED(condition):
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
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            self.logger('Checker for client %s (command "%s")'
232
                        ' was killed by signal %s'
233
                        % (self.properties["Name"], command,
409 by Teddy Hogeborn
* mandos (MandosServer.handle_ipc): Better log message.
234
                           os.WTERMSIG(condition)))
417 by Teddy Hogeborn
* mandos (AvahiService.entry_group_state_changed): Better debug log
235
        elif os.WCOREDUMP(condition):
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
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            self.logger('Checker for client %s (command "%s")'
237
                        ' dumped core'
238
                        % (self.properties["Name"], command))
417 by Teddy Hogeborn
* mandos (AvahiService.entry_group_state_changed): Better debug log
239
        else:
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
240
            self.logger('Checker for client %s completed'
241
                        ' mysteriously')
417 by Teddy Hogeborn
* mandos (AvahiService.entry_group_state_changed): Better debug log
242
        self.update()
409 by Teddy Hogeborn
* mandos (MandosServer.handle_ipc): Better log message.
243
    
244
    def checker_started(self, command):
537 by Björn Påhlsson
nicer stacktrace when mandos-monitor fail during startup
245
        """Server signals that a checker started. This could be useful
246
           to log in the future. """
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
247
        #self.logger('Client %s started checker "%s"'
248
        #            % (self.properties["Name"], unicode(command)))
24.1.153 by Björn Påhlsson
early commit to ease todays coding
249
        pass
409 by Teddy Hogeborn
* mandos (MandosServer.handle_ipc): Better log message.
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251
    def got_secret(self):
24.1.159 by Björn Påhlsson
added approval to mandos-ctl
252
        self.last_checker_failed = False
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
253
        self.logger('Client %s received its secret'
254
                    % self.properties["Name"])
409 by Teddy Hogeborn
* mandos (MandosServer.handle_ipc): Better log message.
255
    
24.1.153 by Björn Påhlsson
early commit to ease todays coding
256
    def need_approval(self, timeout, default):
257
        if not default:
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
258
            message = 'Client %s needs approval within %s seconds'
24.1.153 by Björn Påhlsson
early commit to ease todays coding
259
        else:
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
260
            message = 'Client %s will get its secret in %s seconds'
24.1.153 by Björn Påhlsson
early commit to ease todays coding
261
        self.logger(message
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
262
                    % (self.properties["Name"], timeout/1000))
442 by Teddy Hogeborn
* DBUS-API: Document new "LastApprovalRequest" client property.
263
        self.using_timer(True)
24.1.153 by Björn Påhlsson
early commit to ease todays coding
264
    
265
    def rejected(self, reason):
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
266
        self.logger('Client %s was rejected; reason: %s'
267
                    % (self.properties["Name"], reason))
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
268
    
269
    def selectable(self):
270
        """Make this a "selectable" widget.
271
        This overrides the method from urwid.FlowWidget."""
272
        return True
273
    
463.1.1 by teddy at bsnet
* mandos-monitor: Use only unicode string literals.
274
    def rows(self, maxcolrow, focus=False):
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
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        """How many rows this widget will occupy might depend on
276
        whether we have focus or not.
277
        This overrides the method from urwid.FlowWidget"""
463.1.1 by teddy at bsnet
* mandos-monitor: Use only unicode string literals.
278
        return self.current_widget(focus).rows(maxcolrow, focus=focus)
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
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280
    def current_widget(self, focus=False):
281
        if focus or self.opened:
282
            return self._focus_widget
283
        return self._widget
284
    
285
    def update(self):
286
        "Called when what is visible on the screen should be updated."
287
        # How to add standout mode to a style
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
288
        with_standout = { "normal": "standout",
289
                          "bold": "bold-standout",
290
                          "underline-blink":
291
                              "underline-blink-standout",
292
                          "bold-underline-blink":
293
                              "bold-underline-blink-standout",
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
294
                          }
24.1.154 by Björn Påhlsson
merge
295
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
296
        # Rebuild focus and non-focus widgets using current properties
24.1.154 by Björn Påhlsson
merge
297
298
        # Base part of a client. Name!
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
299
        base = ('%(name)s: '
300
                      % {"name": self.properties["Name"]})
301
        if not self.properties["Enabled"]:
302
            message = "DISABLED"
303
        elif self.properties["ApprovalPending"]:
442 by Teddy Hogeborn
* DBUS-API: Document new "LastApprovalRequest" client property.
304
            timeout = datetime.timedelta(milliseconds
305
                                         = self.properties
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
306
                                         ["ApprovalDelay"])
442 by Teddy Hogeborn
* DBUS-API: Document new "LastApprovalRequest" client property.
307
            last_approval_request = isoformat_to_datetime(
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
308
                self.properties["LastApprovalRequest"])
442 by Teddy Hogeborn
* DBUS-API: Document new "LastApprovalRequest" client property.
309
            if last_approval_request is not None:
310
                timer = timeout - (datetime.datetime.utcnow()
311
                                   - last_approval_request)
312
            else:
313
                timer = datetime.timedelta()
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
314
            if self.properties["ApprovedByDefault"]:
315
                message = "Approval in %s. (d)eny?"
24.1.159 by Björn Påhlsson
added approval to mandos-ctl
316
            else:
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
317
                message = "Denial in %s. (a)pprove?"
442 by Teddy Hogeborn
* DBUS-API: Document new "LastApprovalRequest" client property.
318
            message = message % unicode(timer).rsplit(".", 1)[0]
24.1.156 by Björn Påhlsson
merge
319
        elif self.last_checker_failed:
24.1.179 by Björn Påhlsson
New feature:
320
            # When checker has failed, print a timer until client expires
321
            expires = self.properties["Expires"]
322
            if expires == "":
323
                timer = datetime.timedelta(0)
324
            else:
325
                expires = datetime.datetime.strptime(expires,
326
                                                     '%Y-%m-%dT%H:%M:%S.%f')
327
                timer = expires - datetime.datetime.utcnow()
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
328
            message = ('A checker has failed! Time until client'
329
                       ' gets disabled: %s'
24.1.158 by Björn Påhlsson
mandos-monitor: removed milisecondsseconds from countdown.
330
                           % unicode(timer).rsplit(".", 1)[0])
24.1.154 by Björn Påhlsson
merge
331
        else:
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
332
            message = "enabled"
333
        self._text = "%s%s" % (base, message)
24.1.156 by Björn Påhlsson
merge
334
            
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
335
        if not urwid.supports_unicode():
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
336
            self._text = self._text.encode("ascii", "replace")
337
        textlist = [("normal", self._text)]
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
338
        self._text_widget.set_text(textlist)
339
        self._focus_text_widget.set_text([(with_standout[text[0]],
340
                                           text[1])
341
                                          if isinstance(text, tuple)
342
                                          else text
343
                                          for text in textlist])
344
        self._widget = self._text_widget
345
        self._focus_widget = urwid.AttrWrap(self._focus_text_widget,
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
346
                                            "standout")
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
347
        # Run update hook, if any
348
        if self.update_hook is not None:
349
            self.update_hook()
350
    
417 by Teddy Hogeborn
* mandos (AvahiService.entry_group_state_changed): Better debug log
351
    def update_timer(self):
24.1.179 by Björn Påhlsson
New feature:
352
        """called by gobject. Will indefinitely loop until
353
        gobject.source_remove() on tag is called"""
417 by Teddy Hogeborn
* mandos (AvahiService.entry_group_state_changed): Better debug log
354
        self.update()
355
        return True             # Keep calling this
356
    
488 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Save match tag for
357
    def delete(self, *args, **kwargs):
417 by Teddy Hogeborn
* mandos (AvahiService.entry_group_state_changed): Better debug log
358
        if self._update_timer_callback_tag is not None:
359
            gobject.source_remove(self._update_timer_callback_tag)
360
            self._update_timer_callback_tag = None
488 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Save match tag for
361
        for match in self.match_objects:
362
            match.remove()
363
        self.match_objects = ()
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
364
        if self.delete_hook is not None:
365
            self.delete_hook(self)
488 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Save match tag for
366
        return super(MandosClientWidget, self).delete(*args, **kwargs)
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
367
    
463.1.1 by teddy at bsnet
* mandos-monitor: Use only unicode string literals.
368
    def render(self, maxcolrow, focus=False):
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
369
        """Render differently if we have focus.
370
        This overrides the method from urwid.FlowWidget"""
463.1.1 by teddy at bsnet
* mandos-monitor: Use only unicode string literals.
371
        return self.current_widget(focus).render(maxcolrow,
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
372
                                                 focus=focus)
373
    
463.1.1 by teddy at bsnet
* mandos-monitor: Use only unicode string literals.
374
    def keypress(self, maxcolrow, key):
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
375
        """Handle keys.
376
        This overrides the method from urwid.FlowWidget"""
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
377
        if key == "+":
482 by Teddy Hogeborn
* mandos: Tolerate restarting Avahi servers. Also Changed to new
378
            self.proxy.Enable(dbus_interface = client_interface,
379
                              ignore_reply=True)
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
380
        elif key == "-":
482 by Teddy Hogeborn
* mandos: Tolerate restarting Avahi servers. Also Changed to new
381
            self.proxy.Disable(dbus_interface = client_interface,
382
                               ignore_reply=True)
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
383
        elif key == "a":
24.1.154 by Björn Påhlsson
merge
384
            self.proxy.Approve(dbus.Boolean(True, variant_level=1),
482 by Teddy Hogeborn
* mandos: Tolerate restarting Avahi servers. Also Changed to new
385
                               dbus_interface = client_interface,
386
                               ignore_reply=True)
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
387
        elif key == "d":
24.1.154 by Björn Påhlsson
merge
388
            self.proxy.Approve(dbus.Boolean(False, variant_level=1),
482 by Teddy Hogeborn
* mandos: Tolerate restarting Avahi servers. Also Changed to new
389
                                  dbus_interface = client_interface,
390
                               ignore_reply=True)
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
391
        elif key == "R" or key == "_" or key == "ctrl k":
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
392
            self.server_proxy_object.RemoveClient(self.proxy
482 by Teddy Hogeborn
* mandos: Tolerate restarting Avahi servers. Also Changed to new
393
                                                  .object_path,
394
                                                  ignore_reply=True)
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
395
        elif key == "s":
482 by Teddy Hogeborn
* mandos: Tolerate restarting Avahi servers. Also Changed to new
396
            self.proxy.StartChecker(dbus_interface = client_interface,
397
                                    ignore_reply=True)
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
398
        elif key == "S":
482 by Teddy Hogeborn
* mandos: Tolerate restarting Avahi servers. Also Changed to new
399
            self.proxy.StopChecker(dbus_interface = client_interface,
400
                                   ignore_reply=True)
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
401
        elif key == "C":
482 by Teddy Hogeborn
* mandos: Tolerate restarting Avahi servers. Also Changed to new
402
            self.proxy.CheckedOK(dbus_interface = client_interface,
403
                                 ignore_reply=True)
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
404
        # xxx
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
405
#         elif key == "p" or key == "=":
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
406
#             self.proxy.pause()
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
407
#         elif key == "u" or key == ":":
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
408
#             self.proxy.unpause()
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
409
#         elif key == "RET":
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
410
#             self.open()
411
        else:
412
            return key
413
    
414
    def property_changed(self, property=None, value=None,
415
                         *args, **kwargs):
416
        """Call self.update() if old value is not new value.
417
        This overrides the method from MandosClientPropertyCache"""
418
        property_name = unicode(property)
419
        old_value = self.properties.get(property_name)
420
        super(MandosClientWidget, self).property_changed(
421
            property=property, value=value, *args, **kwargs)
422
        if self.properties.get(property_name) != old_value:
423
            self.update()
424
425
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
426
class ConstrainedListBox(urwid.ListBox):
427
    """Like a normal urwid.ListBox, but will consume all "up" or
428
    "down" key presses, thus not allowing any containing widgets to
429
    use them as an excuse to shift focus away from this widget.
430
    """
463.1.1 by teddy at bsnet
* mandos-monitor: Use only unicode string literals.
431
    def keypress(self, maxcolrow, key):
432
        ret = super(ConstrainedListBox, self).keypress(maxcolrow, key)
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
433
        if ret in ("up", "down"):
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
434
            return
435
        return ret
436
437
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
438
class UserInterface(object):
439
    """This is the entire user interface - the whole screen
440
    with boxes, lists of client widgets, etc.
441
    """
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
442
    def __init__(self, max_log_length=1000):
443
        DBusGMainLoop(set_as_default=True)
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
444
        
445
        self.screen = urwid.curses_display.Screen()
446
        
447
        self.screen.register_palette((
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
448
                ("normal",
449
                 "default", "default", None),
450
                ("bold",
451
                 "default", "default", "bold"),
452
                ("underline-blink",
453
                 "default", "default", "underline"),
454
                ("standout",
455
                 "default", "default", "standout"),
456
                ("bold-underline-blink",
457
                 "default", "default", ("bold", "underline")),
458
                ("bold-standout",
459
                 "default", "default", ("bold", "standout")),
460
                ("underline-blink-standout",
461
                 "default", "default", ("underline", "standout")),
462
                ("bold-underline-blink-standout",
463
                 "default", "default", ("bold", "underline",
464
                                          "standout")),
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
465
                ))
466
        
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
467
        if urwid.supports_unicode():
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
468
            self.divider = "─" # \u2500
469
            #self.divider = "━" # \u2501
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
470
        else:
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
471
            #self.divider = "-" # \u002d
472
            self.divider = "_" # \u005f
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
473
        
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
474
        self.screen.start()
475
        
476
        self.size = self.screen.get_cols_rows()
477
        
478
        self.clients = urwid.SimpleListWalker([])
479
        self.clients_dict = {}
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
480
        
481
        # We will add Text widgets to this list
482
        self.log = []
483
        self.max_log_length = max_log_length
484
        
485
        # We keep a reference to the log widget so we can remove it
486
        # from the ListWalker without it getting destroyed
487
        self.logbox = ConstrainedListBox(self.log)
488
        
489
        # This keeps track of whether self.uilist currently has
490
        # self.logbox in it or not
491
        self.log_visible = True
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
492
        self.log_wrap = "any"
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
493
        
494
        self.rebuild()
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
495
        self.log_message_raw(("bold",
496
                              "Mandos Monitor version " + version))
497
        self.log_message_raw(("bold",
498
                              "q: Quit  ?: Help"))
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
499
        
500
        self.busname = domain + '.Mandos'
501
        self.main_loop = gobject.MainLoop()
502
    
409 by Teddy Hogeborn
* mandos (MandosServer.handle_ipc): Better log message.
503
    def client_not_found(self, fingerprint, address):
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
504
        self.log_message(("Client with address %s and fingerprint %s"
505
                          " could not be found" % (address,
409 by Teddy Hogeborn
* mandos (MandosServer.handle_ipc): Better log message.
506
                                                    fingerprint)))
507
    
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
508
    def rebuild(self):
509
        """This rebuilds the User Interface.
510
        Call this when the widget layout needs to change"""
511
        self.uilist = []
512
        #self.uilist.append(urwid.ListBox(self.clients))
422 by Teddy Hogeborn
Rename all D-Bus properties to conform to D-Bus naming conventions;
513
        self.uilist.append(urwid.Frame(ConstrainedListBox(self.
514
                                                          clients),
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
515
                                       #header=urwid.Divider(),
516
                                       header=None,
422 by Teddy Hogeborn
Rename all D-Bus properties to conform to D-Bus naming conventions;
517
                                       footer=
518
                                       urwid.Divider(div_char=
519
                                                     self.divider)))
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
520
        if self.log_visible:
521
            self.uilist.append(self.logbox)
522
        self.topwidget = urwid.Pile(self.uilist)
523
    
409 by Teddy Hogeborn
* mandos (MandosServer.handle_ipc): Better log message.
524
    def log_message(self, message):
525
        timestamp = datetime.datetime.now().isoformat()
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
526
        self.log_message_raw(timestamp + ": " + message)
409 by Teddy Hogeborn
* mandos (MandosServer.handle_ipc): Better log message.
527
    
528
    def log_message_raw(self, markup):
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
529
        """Add a log message to the log buffer."""
530
        self.log.append(urwid.Text(markup, wrap=self.log_wrap))
531
        if (self.max_log_length
532
            and len(self.log) > self.max_log_length):
533
            del self.log[0:len(self.log)-self.max_log_length-1]
408 by Teddy Hogeborn
* debian/rules: Only set BROKEN_PIE if binutils is a specific range of
534
        self.logbox.set_focus(len(self.logbox.body.contents),
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
535
                              coming_from="above")
409 by Teddy Hogeborn
* mandos (MandosServer.handle_ipc): Better log message.
536
        self.refresh()
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
537
    
538
    def toggle_log_display(self):
539
        """Toggle visibility of the log buffer."""
540
        self.log_visible = not self.log_visible
541
        self.rebuild()
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
542
        #self.log_message("Log visibility changed to: "
430 by teddy at bsnet
* mandos-monitor.xml: New.
543
        #                 + unicode(self.log_visible))
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
544
    
545
    def change_log_display(self):
546
        """Change type of log display.
547
        Currently, this toggles wrapping of text lines."""
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
548
        if self.log_wrap == "clip":
549
            self.log_wrap = "any"
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
550
        else:
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
551
            self.log_wrap = "clip"
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
552
        for textwidget in self.log:
553
            textwidget.set_wrap_mode(self.log_wrap)
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
554
        #self.log_message("Wrap mode: " + self.log_wrap)
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
555
    
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
556
    def find_and_remove_client(self, path, name):
488 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Save match tag for
557
        """Find a client by its object path and remove it.
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
558
        
559
        This is connected to the ClientRemoved signal from the
560
        Mandos server object."""
561
        try:
562
            client = self.clients_dict[path]
563
        except KeyError:
564
            # not found?
488 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Save match tag for
565
            self.log_message("Unknown client %r (%r) removed", name,
566
                             path)
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
567
            return
488 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Save match tag for
568
        client.delete()
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
569
    
411 by Teddy Hogeborn
More consistent terminology: Clients are no longer "invalid" - they
570
    def add_new_client(self, path):
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
571
        client_proxy_object = self.bus.get_object(self.busname, path)
572
        self.add_client(MandosClientWidget(server_proxy_object
573
                                           =self.mandos_serv,
574
                                           proxy_object
575
                                           =client_proxy_object,
576
                                           update_hook
577
                                           =self.refresh,
578
                                           delete_hook
411 by Teddy Hogeborn
More consistent terminology: Clients are no longer "invalid" - they
579
                                           =self.remove_client,
580
                                           logger
581
                                           =self.log_message),
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
582
                        path=path)
583
    
584
    def add_client(self, client, path=None):
585
        self.clients.append(client)
586
        if path is None:
587
            path = client.proxy.object_path
588
        self.clients_dict[path] = client
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
589
        self.clients.sort(None, lambda c: c.properties["Name"])
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
590
        self.refresh()
591
    
592
    def remove_client(self, client, path=None):
593
        self.clients.remove(client)
594
        if path is None:
595
            path = client.proxy.object_path
596
        del self.clients_dict[path]
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
597
        if not self.clients_dict:
598
            # Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
599
            # is completely emptied, we need to recreate it.
600
            self.clients = urwid.SimpleListWalker([])
601
            self.rebuild()
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
602
        self.refresh()
603
    
604
    def refresh(self):
605
        """Redraw the screen"""
606
        canvas = self.topwidget.render(self.size, focus=True)
607
        self.screen.draw_screen(self.size, canvas)
608
    
609
    def run(self):
610
        """Start the main loop and exit when it's done."""
537 by Björn Påhlsson
nicer stacktrace when mandos-monitor fail during startup
611
        self.bus = dbus.SystemBus()
612
        mandos_dbus_objc = self.bus.get_object(
613
            self.busname, "/", follow_name_owner_changes=True)
614
        self.mandos_serv = dbus.Interface(mandos_dbus_objc,
615
                                          dbus_interface
616
                                          = server_interface)
617
        try:
618
            mandos_clients = (self.mandos_serv
619
                              .GetAllClientsWithProperties())
620
        except dbus.exceptions.DBusException:
621
            mandos_clients = dbus.Dictionary()
622
        
623
        (self.mandos_serv
624
         .connect_to_signal("ClientRemoved",
625
                            self.find_and_remove_client,
626
                            dbus_interface=server_interface,
627
                            byte_arrays=True))
628
        (self.mandos_serv
629
         .connect_to_signal("ClientAdded",
630
                            self.add_new_client,
631
                            dbus_interface=server_interface,
632
                            byte_arrays=True))
633
        (self.mandos_serv
634
         .connect_to_signal("ClientNotFound",
635
                            self.client_not_found,
636
                            dbus_interface=server_interface,
637
                            byte_arrays=True))
638
        for path, client in mandos_clients.iteritems():
639
            client_proxy_object = self.bus.get_object(self.busname,
640
                                                      path)
641
            self.add_client(MandosClientWidget(server_proxy_object
642
                                               =self.mandos_serv,
643
                                               proxy_object
644
                                               =client_proxy_object,
645
                                               properties=client,
646
                                               update_hook
647
                                               =self.refresh,
648
                                               delete_hook
649
                                               =self.remove_client,
650
                                               logger
651
                                               =self.log_message),
652
                            path=path)
653
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
654
        self.refresh()
655
        self._input_callback_tag = (gobject.io_add_watch
656
                                    (sys.stdin.fileno(),
657
                                     gobject.IO_IN,
658
                                     self.process_input))
659
        self.main_loop.run()
660
        # Main loop has finished, we should close everything now
661
        gobject.source_remove(self._input_callback_tag)
662
        self.screen.stop()
663
    
664
    def stop(self):
665
        self.main_loop.quit()
666
    
667
    def process_input(self, source, condition):
668
        keys = self.screen.get_input()
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
669
        translations = { "ctrl n": "down",      # Emacs
670
                         "ctrl p": "up",        # Emacs
671
                         "ctrl v": "page down", # Emacs
672
                         "meta v": "page up",   # Emacs
673
                         " ": "page down",      # less
674
                         "f": "page down",      # less
675
                         "b": "page up",        # less
676
                         "j": "down",           # vi
677
                         "k": "up",             # vi
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
678
                         }
679
        for key in keys:
680
            try:
681
                key = translations[key]
682
            except KeyError:    # :-)
683
                pass
684
            
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
685
            if key == "q" or key == "Q":
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
686
                self.stop()
687
                break
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
688
            elif key == "window resize":
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
689
                self.size = self.screen.get_cols_rows()
690
                self.refresh()
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
691
            elif key == "\f":  # Ctrl-L
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
692
                self.refresh()
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
693
            elif key == "l" or key == "D":
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
694
                self.toggle_log_display()
695
                self.refresh()
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
696
            elif key == "w" or key == "i":
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
697
                self.change_log_display()
698
                self.refresh()
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
699
            elif key == "?" or key == "f1" or key == "esc":
407 by Teddy Hogeborn
* mandos-monitor (MandosClientWidget): Change "StopChecker" key to "S"
700
                if not self.log_visible:
701
                    self.log_visible = True
702
                    self.rebuild()
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
703
                self.log_message_raw(("bold",
704
                                      "  ".
705
                                      join(("q: Quit",
706
                                            "?: Help",
707
                                            "l: Log window toggle",
708
                                            "TAB: Switch window",
709
                                            "w: Wrap (log)"))))
710
                self.log_message_raw(("bold",
711
                                      "  "
712
                                      .join(("Clients:",
713
                                             "+: Enable",
714
                                             "-: Disable",
715
                                             "R: Remove",
716
                                             "s: Start new checker",
717
                                             "S: Stop checker",
718
                                             "C: Checker OK",
719
                                             "a: Approve",
720
                                             "d: Deny"))))
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
721
                self.refresh()
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
722
            elif key == "tab":
405 by Teddy Hogeborn
* mandos-monitor (MandosClientPropertyCache): Remove conversion of
723
                if self.topwidget.get_focus() is self.logbox:
724
                    self.topwidget.set_focus(0)
725
                else:
726
                    self.topwidget.set_focus(self.logbox)
727
                self.refresh()
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
728
            #elif (key == "end" or key == "meta >" or key == "G"
729
            #      or key == ">"):
407 by Teddy Hogeborn
* mandos-monitor (MandosClientWidget): Change "StopChecker" key to "S"
730
            #    pass            # xxx end-of-buffer
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
731
            #elif (key == "home" or key == "meta <" or key == "g"
732
            #      or key == "<"):
407 by Teddy Hogeborn
* mandos-monitor (MandosClientWidget): Change "StopChecker" key to "S"
733
            #    pass            # xxx beginning-of-buffer
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
734
            #elif key == "ctrl e" or key == "$":
407 by Teddy Hogeborn
* mandos-monitor (MandosClientWidget): Change "StopChecker" key to "S"
735
            #    pass            # xxx move-end-of-line
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
736
            #elif key == "ctrl a" or key == "^":
407 by Teddy Hogeborn
* mandos-monitor (MandosClientWidget): Change "StopChecker" key to "S"
737
            #    pass            # xxx move-beginning-of-line
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
738
            #elif key == "ctrl b" or key == "meta (" or key == "h":
407 by Teddy Hogeborn
* mandos-monitor (MandosClientWidget): Change "StopChecker" key to "S"
739
            #    pass            # xxx left
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
740
            #elif key == "ctrl f" or key == "meta )" or key == "l":
407 by Teddy Hogeborn
* mandos-monitor (MandosClientWidget): Change "StopChecker" key to "S"
741
            #    pass            # xxx right
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
742
            #elif key == "a":
407 by Teddy Hogeborn
* mandos-monitor (MandosClientWidget): Change "StopChecker" key to "S"
743
            #    pass            # scroll up log
463.1.2 by teddy at bsnet
* mandos-monitor: Use unicode string literals. Update __future__
744
            #elif key == "z":
407 by Teddy Hogeborn
* mandos-monitor (MandosClientWidget): Change "StopChecker" key to "S"
745
            #    pass            # scroll down log
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
746
            elif self.topwidget.selectable():
747
                self.topwidget.keypress(self.size, key)
748
                self.refresh()
749
        return True
750
751
ui = UserInterface()
752
try:
753
    ui.run()
24.1.159 by Björn Påhlsson
added approval to mandos-ctl
754
except KeyboardInterrupt:
755
    ui.screen.stop()
411 by Teddy Hogeborn
More consistent terminology: Clients are no longer "invalid" - they
756
except Exception, e:
757
    ui.log_message(unicode(e))
404 by Teddy Hogeborn
* mandos-monitor: New prototype version of interactive server
758
    ui.screen.stop()
759
    raise