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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 © 2009-2012 Teddy Hogeborn
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# Copyright © 2009-2012 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 <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 future_builtins import *
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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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properties and calls a hook function when any of them are
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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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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.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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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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#XXX This breaks good super behaviour
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# super(MandosClientPropertyCache, self).__init__(
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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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if properties is None:
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self.properties.update(self.proxy.GetAll(
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dbus_interface=dbus.PROPERTIES_IFACE))
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super(MandosClientPropertyCache, self).__init__(**kwargs)
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def properties_changed(self, interface, properties, invalidated):
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"""This is called whenever we get a PropertiesChanged signal
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It updates the changed properties in the "properties" dict.
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# Update properties dict with new value
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self.properties[property] = value
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def delete(self, *args, **kwargs):
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if interface == client_interface:
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self.properties.update(properties)
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self.property_changed_match.remove()
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super(MandosClientPropertyCache, self).__init__(
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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, *args, **kwargs):
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delete_hook=None, logger=None, **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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client_interface,
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byte_arrays=True))
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#self.logger('Created client %s' % (self.properties["Name"]))
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def property_changed(self, property=None, value=None):
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super(self, MandosClientWidget).property_changed(property,
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if property == "ApprovalPending":
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using_timer(bool(value))
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if property == "LastCheckerStatus":
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using_timer(value != 0)
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#self.logger('Checker for client %s (command "%s")'
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# % (self.properties["Name"], command))
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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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old = self._update_timer_callback_lock
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self._update_timer_callback_lock += 1
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self._update_timer_callback_lock -= 1
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if old == 0 and self._update_timer_callback_lock:
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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 old and self._update_timer_callback_lock == 0:
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gobject.source_remove(self._update_timer_callback_tag)
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elif not (flag or self._update_timer_callback_tag is None):
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GLib.source_remove(self._update_timer_callback_tag)
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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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' succeeded'.format(self.properties["Name"],
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if os.WIFEXITED(condition):
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self.logger('Checker for client %s (command "%s")'
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' failed with exit code %s'
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% (self.properties["Name"], command,
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os.WEXITSTATUS(condition)))
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self.logger('Checker for client {} (command "{}") failed'
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.format(self.properties["Name"], command,
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os.WEXITSTATUS(condition)))
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elif os.WIFSIGNALED(condition):
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self.logger('Checker for client %s (command "%s")'
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' was killed by signal %s'
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% (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 %s (command "%s")'
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% (self.properties["Name"], command))
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self.logger('Checker for client %s completed'
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self.logger('Checker for client {} (command "{}") was'
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' killed by signal {}'
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.format(self.properties["Name"], command,
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os.WTERMSIG(condition)))
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def checker_started(self, command):
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"""Server signals that a checker started. This could be useful
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to log in the future. """
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#self.logger('Client %s started checker "%s"'
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# % (self.properties["Name"], unicode(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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def got_secret(self):
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self.logger('Client %s received its secret'
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% self.properties["Name"])
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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 %s needs approval within %s seconds'
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message = 'Client {} needs approval within {} seconds'
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message = 'Client %s will get its secret in %s seconds'
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% (self.properties["Name"], timeout/1000))
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self.using_timer(True)
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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 %s was rejected; reason: %s'
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% (self.properties["Name"], 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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% {"name": self.properties["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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timer = timeout - (datetime.datetime.utcnow()
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- last_approval_request)
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timer = max(timeout - (datetime.datetime.utcnow()
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- last_approval_request),
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datetime.timedelta())
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timer = datetime.timedelta()
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if self.properties["ApprovedByDefault"]:
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message = "Approval in %s. (d)eny?"
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message = "Approval in {}. (d)eny?"
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message = "Denial in %s. (a)pprove?"
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message = message % unicode(timer).rsplit(".", 1)[0]
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message = "Denial in {}. (a)pprove?"
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message = message.format(str(timer).rsplit(".", 1)[0])
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self.using_timer(True)
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elif self.properties["LastCheckerStatus"] != 0:
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# When checker has failed, print a timer until client expires
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# When checker has failed, show timer until client expires
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expires = self.properties["Expires"]
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if expires == "":
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timer = datetime.timedelta(0)
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expires = datetime.datetime.strptime(expires,
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'%Y-%m-%dT%H:%M:%S.%f')
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timer = expires - datetime.datetime.utcnow()
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expires = (datetime.datetime.strptime
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(expires, '%Y-%m-%dT%H:%M:%S.%f'))
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timer = max(expires - datetime.datetime.utcnow(),
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datetime.timedelta())
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message = ('A checker has failed! Time until client'
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% unicode(timer).rsplit(".", 1)[0])
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.format(str(timer).rsplit(".", 1)[0]))
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self.using_timer(True)
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message = "enabled"
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self._text = "%s%s" % (base, message)
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self.using_timer(False)
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self._text = "{}{}".format(base, message)
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if not urwid.supports_unicode():
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self._text = self._text.encode("ascii", "replace")
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textlist = [("normal", self._text)]
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# Run update hook, if any
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if self.update_hook is not None:
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self.update_hook()
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def update_timer(self):
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"""called by 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, *args, **kwargs):
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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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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(*args, **kwargs)
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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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"""This is the entire user interface - the whole screen
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with boxes, lists of client widgets, etc.
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def __init__(self, max_log_length=1000):
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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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"default", "default", "bold"),
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"bold", "default", "bold"),
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("underline-blink",
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"default", "default", "underline"),
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"underline,blink", "default", "underline,blink"),
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"default", "default", "standout"),
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"standout", "default", "standout"),
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("bold-underline-blink",
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"default", "default", ("bold", "underline")),
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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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"default", "default", ("bold", "standout")),
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"bold,standout", "default", "bold,standout"),
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("underline-blink-standout",
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"default", "default", ("underline", "standout")),
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"underline,blink,standout", "default",
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"underline,blink,standout"),
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("bold-underline-blink-standout",
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"default", "default", ("bold", "underline",
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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():
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self.divider = "─" # \u2500
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#self.divider = "━" # \u2501
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self.divider = "─" # \u2500
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#self.divider = "-" # \u002d
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self.divider = "_" # \u005f
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self.divider = "_" # \u005f
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self.screen.start()
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self.size = self.screen.get_cols_rows()
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self.clients = urwid.SimpleListWalker([])
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self.clients_dict = {}
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# We will add Text widgets to this list
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self.log = urwid.SimpleListWalker([])
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self.max_log_length = max_log_length
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self.log_level = log_level
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# We keep a reference to the log widget so we can remove it
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# from the ListWalker without it getting destroyed
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self.logbox = ConstrainedListBox(self.log)
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# This keeps track of whether self.uilist currently has
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# self.logbox in it or not
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self.log_visible = True
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self.log_wrap = "any"
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self.log_message_raw(("bold",
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"Mandos Monitor version " + version))
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self.log_message_raw(("bold",
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"q: Quit ?: Help"))
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self.busname = domain + '.Mandos'
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self.main_loop = gobject.MainLoop()
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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 %s and fingerprint %s"
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" could not be found" % (address,
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self.log_message("Client with address {} and fingerprint {}"
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" could not be found"
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.format(address, fingerprint))
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def rebuild(self):
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"""This rebuilds the User Interface.
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Call this when the widget layout needs to change"""
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#self.uilist.append(urwid.ListBox(self.clients))
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# self.uilist.append(urwid.ListBox(self.clients))
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self.uilist.append(urwid.Frame(ConstrainedListBox(self.
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#header=urwid.Divider(),
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# header=urwid.Divider(),
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urwid.Divider(div_char=
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footer=urwid.Divider(
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div_char=self.divider)))
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if self.log_visible:
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self.uilist.append(self.logbox)
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self.topwidget = urwid.Pile(self.uilist)
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def log_message(self, message):
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def log_message(self, message, level=1):
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"""Log message formatted with timestamp"""
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if level < self.log_level:
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timestamp = datetime.datetime.now().isoformat()
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self.log_message_raw(timestamp + ": " + message)
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def log_message_raw(self, markup):
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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))
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if (self.max_log_length
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and len(self.log) > self.max_log_length):
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del self.log[0:len(self.log)-self.max_log_length-1]
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self.logbox.set_focus(len(self.logbox.body.contents),
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if self.max_log_length:
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if len(self.log) > self.max_log_length:
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del self.log[0:len(self.log)-self.max_log_length-1]
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self.logbox.set_focus(len(self.logbox.body.contents)-1,
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coming_from="above")
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def toggle_log_display(self):
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"""Toggle visibility of the log buffer."""
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self.log_visible = not self.log_visible
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#self.log_message("Log visibility changed to: "
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# + unicode(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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self.log_wrap = "clip"
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for textwidget in self.log:
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textwidget.set_wrap_mode(self.log_wrap)
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#self.log_message("Wrap mode: " + self.log_wrap)
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def find_and_remove_client(self, path, name):
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self.log_message("Wrap mode: {}".format(self.log_wrap),
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def find_and_remove_client(self, path, interfaces):
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"""Find a client by its object path and remove it.
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This is connected to the ClientRemoved signal from the
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This is connected to the InterfacesRemoved signal from the
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Mandos server object."""
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if client_interface not in interfaces:
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# Not a Mandos client object; ignore
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client = self.clients_dict[path]
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self.log_message("Unknown client %r (%r) removed", name,
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self.log_message("Unknown client {!r} removed"
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def add_new_client(self, path):
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def add_new_client(self, path, ifs_and_props):
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"""Find a client by its object path and remove it.
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This is connected to the InterfacesAdded signal from the
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Mandos server object.
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if client_interface not in ifs_and_props:
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# Not a Mandos client object; ignore
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client_proxy_object = self.bus.get_object(self.busname, path)
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self.add_client(MandosClientWidget(server_proxy_object
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=client_proxy_object,
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self.add_client(MandosClientWidget(
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server_proxy_object=self.mandos_serv,
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proxy_object=client_proxy_object,
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update_hook=self.refresh,
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delete_hook=self.remove_client,
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logger=self.log_message,
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properties=dict(ifs_and_props[client_interface])),
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def add_client(self, client, path=None):
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self.clients.append(client)
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path = client.proxy.object_path
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self.clients_dict[path] = client
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self.clients.sort(None, lambda c: c.properties["Name"])
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self.clients.sort(key=lambda c: c.properties["Name"])
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def remove_client(self, client, path=None):
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self.clients.remove(client)
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path = client.proxy.object_path
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del self.clients_dict[path]
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if not self.clients_dict:
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# Work around bug in Urwid 0.9.8.3 - if a SimpleListWalker
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# is completely emptied, we need to recreate it.
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self.clients = urwid.SimpleListWalker([])
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def refresh(self):
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"""Redraw the screen"""
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canvas = self.topwidget.render(self.size, focus=True)
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self.screen.draw_screen(self.size, canvas)
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"""Start the main loop and exit when it's done."""
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self.bus = dbus.SystemBus()
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mandos_dbus_objc = self.bus.get_object(
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self.busname, "/", follow_name_owner_changes=True)
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self.mandos_serv = dbus.Interface(mandos_dbus_objc,
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self.mandos_serv = dbus.Interface(
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mandos_dbus_objc, dbus_interface=server_interface)
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mandos_clients = (self.mandos_serv
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594
.GetAllClientsWithProperties())
595
if not mandos_clients:
596
self.log_message_raw(("bold",
597
"Note: Server has no clients."))
605
598
except dbus.exceptions.DBusException:
599
self.log_message_raw(("bold",
600
"Note: No Mandos server running."))
606
601
mandos_clients = dbus.Dictionary()
608
603
(self.mandos_serv
609
.connect_to_signal("ClientRemoved",
604
.connect_to_signal("InterfacesRemoved",
610
605
self.find_and_remove_client,
611
dbus_interface=server_interface,
606
dbus_interface=dbus.OBJECT_MANAGER_IFACE,
612
607
byte_arrays=True))
613
608
(self.mandos_serv
614
.connect_to_signal("ClientAdded",
609
.connect_to_signal("InterfacesAdded",
615
610
self.add_new_client,
616
dbus_interface=server_interface,
611
dbus_interface=dbus.OBJECT_MANAGER_IFACE,
617
612
byte_arrays=True))
618
613
(self.mandos_serv
619
614
.connect_to_signal("ClientNotFound",
620
615
self.client_not_found,
621
616
dbus_interface=server_interface,
622
617
byte_arrays=True))
623
for path, client in mandos_clients.iteritems():
618
for path, client in mandos_clients.items():
624
619
client_proxy_object = self.bus.get_object(self.busname,
626
self.add_client(MandosClientWidget(server_proxy_object
629
=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),
640
self._input_callback_tag = (gobject.io_add_watch
631
self._input_callback_tag = (GLib.io_add_watch
641
632
(sys.stdin.fileno(),
643
634
self.process_input))
644
635
self.main_loop.run()
645
636
# Main loop has finished, we should close everything now
646
gobject.source_remove(self._input_callback_tag)
637
GLib.source_remove(self._input_callback_tag)
647
638
self.screen.stop()
650
641
self.main_loop.quit()
652
643
def process_input(self, source, condition):
653
644
keys = self.screen.get_input()
654
translations = { "ctrl n": "down", # Emacs
655
"ctrl p": "up", # Emacs
656
"ctrl v": "page down", # Emacs
657
"meta v": "page up", # Emacs
658
" ": "page down", # less
659
"f": "page down", # less
660
"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
666
657
key = translations[key]
667
658
except KeyError: # :-)
670
661
if key == "q" or key == "Q":
673
664
elif key == "window resize":
674
665
self.size = self.screen.get_cols_rows()
676
elif key == "\f": # Ctrl-L
667
elif key == "ctrl l":
678
670
elif key == "l" or key == "D":
679
671
self.toggle_log_display()
711
705
self.topwidget.set_focus(self.logbox)
713
#elif (key == "end" or key == "meta >" or key == "G"
715
# pass # xxx end-of-buffer
716
#elif (key == "home" or key == "meta <" or key == "g"
718
# pass # xxx beginning-of-buffer
719
#elif key == "ctrl e" or key == "$":
720
# pass # xxx move-end-of-line
721
#elif key == "ctrl a" or key == "^":
722
# pass # xxx move-beginning-of-line
723
#elif key == "ctrl b" or key == "meta (" or key == "h":
725
#elif key == "ctrl f" or key == "meta )" or key == "l":
728
# pass # scroll up log
730
# pass # scroll down log
708
if self.log_level == 0:
710
self.log_message("Verbose mode: Off")
713
self.log_message("Verbose mode: On")
714
# elif (key == "end" or key == "meta >" or key == "G"
716
# pass # xxx end-of-buffer
717
# elif (key == "home" or key == "meta <" or key == "g"
719
# pass # xxx beginning-of-buffer
720
# elif key == "ctrl e" or key == "$":
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
731
732
elif self.topwidget.selectable():
732
733
self.topwidget.keypress(self.size, key)
736
738
ui = UserInterface()
739
741
except KeyboardInterrupt:
742
ui.log_message(unicode(e))
743
except Exception as e:
744
ui.log_message(str(e))
added
removed
mandos-monitor
