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- Committer: Teddy Hogeborn
- Date: 2015-05-31 19:05:32 UTC
- mto: (237.7.594 trunk)
- mto: This revision was merged to the branch mainline in revision 325.
- Revision ID: teddy@recompile.se-20150531190532-pfc7mega72dzzzka
mandos: More Python 3 fixes.
mandos (MandosServer/handle_ipc): Do not use callable().
mandos (MandosServer/handle_ipc): Do not use callable().
added
removed
mandos-monitor
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1
#!/usr/bin/python
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# -*- mode: python; coding: utf-8 -*-
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#
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#
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# Mandos Monitor - Control and monitor the Mandos server
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#
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# Copyright © 2009-2018 Teddy Hogeborn
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# Copyright © 2009-2018 Björn Påhlsson
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#
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# This file is part of Mandos.
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#
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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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#
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# Copyright © 2009-2014 Teddy Hogeborn
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# Copyright © 2009-2014 Björn Påhlsson
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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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# Mandos is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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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 Mandos. If not, see <http://www.gnu.org/licenses/>.
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#
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@recompile.se>.
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#
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#
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from __future__ import (division, absolute_import, print_function,
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unicode_literals)
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import urwid
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from dbus.mainloop.glib import DBusGMainLoop
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from gi.repository import GLib
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try:
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import gobject
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except ImportError:
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from gi.repository import GObject as gobject
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import dbus
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import locale
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import logging
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if sys.version_info.major == 2:
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str = unicode
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locale.setlocale(locale.LC_ALL, '')
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import logging
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logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
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# Some useful constants
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domain = 'se.recompile'
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server_interface = domain + '.Mandos'
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client_interface = domain + '.Mandos.Client'
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version = "1.7.17"
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try:
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dbus.OBJECT_MANAGER_IFACE
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except AttributeError:
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dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
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version = "1.6.9"
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def isoformat_to_datetime(iso):
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"Parse an ISO 8601 date string to a datetime.datetime()"
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int(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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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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changed.
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"""
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def __init__(self, proxy_object=None, properties=None, **kwargs):
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self.proxy = proxy_object # Mandos Client proxy object
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self.proxy = proxy_object # Mandos Client proxy object
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self.properties = dict() if properties is None else properties
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self.property_changed_match = (
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self.proxy.connect_to_signal("PropertiesChanged",
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self.properties_changed,
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dbus.PROPERTIES_IFACE,
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byte_arrays=True))
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if properties is None:
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self.properties.update(self.proxy.GetAll(
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client_interface,
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dbus_interface=dbus.PROPERTIES_IFACE))
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self.properties.update(
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self.proxy.GetAll(client_interface,
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dbus_interface
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= dbus.PROPERTIES_IFACE))
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super(MandosClientPropertyCache, self).__init__(**kwargs)
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def properties_changed(self, interface, properties, invalidated):
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"""This is called whenever we get a PropertiesChanged signal
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It updates the changed properties in the "properties" dict.
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"""
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# Update properties dict with new value
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if interface == client_interface:
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self.properties.update(properties)
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self.properties.update(properties)
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def delete(self):
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self.property_changed_match.remove()
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class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
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"""A Mandos Client which is visible on the screen.
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"""
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def __init__(self, server_proxy_object=None, update_hook=None,
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delete_hook=None, logger=None, **kwargs):
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# Called on update
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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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# 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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super(MandosClientWidget, self).__init__(**kwargs)
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self.update()
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self.opened = False
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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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byte_arrays=True))
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self.logger('Created client {}'
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.format(self.properties["Name"]), level=0)
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def using_timer(self, flag):
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"""Call this method with True or False when timer should be
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activated or deactivated.
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"""
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if flag and self._update_timer_callback_tag is None:
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# Will update the shown timer value every second
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self._update_timer_callback_tag = (GLib.timeout_add
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self._update_timer_callback_tag = (gobject.timeout_add
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(1000,
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self.update_timer))
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elif not (flag or self._update_timer_callback_tag is None):
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GLib.source_remove(self._update_timer_callback_tag)
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gobject.source_remove(self._update_timer_callback_tag)
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self._update_timer_callback_tag = None
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def checker_completed(self, exitstatus, condition, command):
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if exitstatus == 0:
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self.logger('Checker for client {} (command "{}")'
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' killed by signal {}'
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.format(self.properties["Name"], command,
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os.WTERMSIG(condition)))
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elif os.WCOREDUMP(condition):
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self.logger('Checker for client {} (command "{}") dumped'
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' core'.format(self.properties["Name"],
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command))
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else:
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self.logger('Checker for client {} completed'
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' mysteriously'
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.format(self.properties["Name"]))
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self.update()
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def checker_started(self, command):
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"""Server signals that a checker started."""
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self.logger('Client {} started checker "{}"'
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.format(self.properties["Name"],
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command), level=0)
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def got_secret(self):
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self.logger('Client {} received its secret'
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.format(self.properties["Name"]))
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def need_approval(self, timeout, default):
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if not default:
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message = 'Client {} needs approval within {} seconds'
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message = 'Client {} will get its secret in {} seconds'
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self.logger(message.format(self.properties["Name"],
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timeout/1000))
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def rejected(self, reason):
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self.logger('Client {} was rejected; reason: {}'
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.format(self.properties["Name"], reason))
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def selectable(self):
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"""Make this a "selectable" widget.
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This overrides the method from urwid.FlowWidget."""
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return True
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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":
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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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}
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with_standout = { "normal": "standout",
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"bold": "bold-standout",
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"underline-blink":
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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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}
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# Rebuild focus and non-focus widgets using current properties
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# Base part of a client. Name!
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base = '{name}: '.format(name=self.properties["Name"])
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if not self.properties["Enabled"]:
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message = "DISABLED"
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self.using_timer(False)
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elif self.properties["ApprovalPending"]:
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timeout = datetime.timedelta(
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milliseconds=self.properties["ApprovalDelay"])
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timeout = datetime.timedelta(milliseconds
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= self.properties
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["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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message = "enabled"
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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):
311
"""called by GLib. Will indefinitely loop until
312
GLib.source_remove() on tag is called
313
"""
314
"""called by gobject. Will indefinitely loop until
315
gobject.source_remove() on tag is called"""
314
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self.update()
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return True # Keep calling this
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def delete(self, **kwargs):
318
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if self._update_timer_callback_tag is not None:
319
GLib.source_remove(self._update_timer_callback_tag)
321
gobject.source_remove(self._update_timer_callback_tag)
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self._update_timer_callback_tag = None
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for match in self.match_objects:
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match.remove()
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if self.delete_hook is not None:
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self.delete_hook(self)
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return super(MandosClientWidget, self).delete(**kwargs)
327
329
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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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focus=focus)
333
335
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def keypress(self, maxcolrow, key):
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"""Handle keys.
336
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This overrides the method from urwid.FlowWidget"""
337
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if key == "+":
338
self.proxy.Set(client_interface, "Enabled",
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dbus.Boolean(True), ignore_reply=True,
340
dbus_interface=dbus.PROPERTIES_IFACE)
340
self.proxy.Enable(dbus_interface = client_interface,
341
ignore_reply=True)
341
342
elif key == "-":
342
self.proxy.Set(client_interface, "Enabled", False,
343
ignore_reply=True,
344
dbus_interface=dbus.PROPERTIES_IFACE)
343
self.proxy.Disable(dbus_interface = client_interface,
344
ignore_reply=True)
345
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elif key == "a":
346
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self.proxy.Approve(dbus.Boolean(True, variant_level=1),
347
dbus_interface=client_interface,
347
dbus_interface = client_interface,
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ignore_reply=True)
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elif key == "d":
350
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self.proxy.Approve(dbus.Boolean(False, variant_level=1),
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dbus_interface=client_interface,
351
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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.object_path,
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ignore_reply=True)
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elif key == "s":
358
self.proxy.Set(client_interface, "CheckerRunning",
359
dbus.Boolean(True), ignore_reply=True,
360
dbus_interface=dbus.PROPERTIES_IFACE)
358
self.proxy.StartChecker(dbus_interface = client_interface,
359
ignore_reply=True)
361
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elif key == "S":
362
self.proxy.Set(client_interface, "CheckerRunning",
363
dbus.Boolean(False), ignore_reply=True,
364
dbus_interface=dbus.PROPERTIES_IFACE)
361
self.proxy.StopChecker(dbus_interface = client_interface,
362
ignore_reply=True)
365
363
elif key == "C":
366
self.proxy.CheckedOK(dbus_interface=client_interface,
364
self.proxy.CheckedOK(dbus_interface = client_interface,
367
365
ignore_reply=True)
368
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# xxx
369
367
# elif key == "p" or key == "=":
374
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# self.open()
375
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else:
376
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return key
377
375
378
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def properties_changed(self, interface, properties, invalidated):
379
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"""Call self.update() if any properties changed.
380
378
This overrides the method from MandosClientPropertyCache"""
381
old_values = {key: self.properties.get(key)
382
for key in properties.keys()}
379
old_values = { key: self.properties.get(key)
380
for key in properties.keys() }
383
381
super(MandosClientWidget, self).properties_changed(
384
382
interface, properties, invalidated)
385
383
if any(old_values[key] != self.properties.get(key)
393
391
use them as an excuse to shift focus away from this widget.
394
392
"""
395
393
def keypress(self, *args, **kwargs):
396
ret = (super(ConstrainedListBox, self)
397
.keypress(*args, **kwargs))
394
ret = super(ConstrainedListBox, self).keypress(*args, **kwargs)
398
395
if ret in ("up", "down"):
399
396
return
400
397
return ret
406
403
"""
407
404
def __init__(self, max_log_length=1000, log_level=1):
408
405
DBusGMainLoop(set_as_default=True)
409
406
410
407
self.screen = urwid.curses_display.Screen()
411
408
412
409
self.screen.register_palette((
413
410
("normal",
414
411
"default", "default", None),
419
416
("standout",
420
417
"standout", "default", "standout"),
421
418
("bold-underline-blink",
422
"bold,underline,blink", "default",
423
"bold,underline,blink"),
419
"bold,underline,blink", "default", "bold,underline,blink"),
424
420
("bold-standout",
425
421
"bold,standout", "default", "bold,standout"),
426
422
("underline-blink-standout",
430
426
"bold,underline,blink,standout", "default",
431
427
"bold,underline,blink,standout"),
432
428
))
433
429
434
430
if urwid.supports_unicode():
435
self.divider = "─" # \u2500
431
self.divider = "─" # \u2500
432
#self.divider = "━" # \u2501
436
433
else:
437
self.divider = "_" # \u005f
438
434
#self.divider = "-" # \u002d
435
self.divider = "_" # \u005f
436
439
437
self.screen.start()
440
438
441
439
self.size = self.screen.get_cols_rows()
442
440
443
441
self.clients = urwid.SimpleListWalker([])
444
442
self.clients_dict = {}
445
443
446
444
# We will add Text widgets to this list
447
445
self.log = []
448
446
self.max_log_length = max_log_length
449
447
450
448
self.log_level = log_level
451
449
452
450
# We keep a reference to the log widget so we can remove it
453
451
# from the ListWalker without it getting destroyed
454
452
self.logbox = ConstrainedListBox(self.log)
455
453
456
454
# This keeps track of whether self.uilist currently has
457
455
# self.logbox in it or not
458
456
self.log_visible = True
459
457
self.log_wrap = "any"
460
458
461
459
self.rebuild()
462
460
self.log_message_raw(("bold",
463
461
"Mandos Monitor version " + version))
464
462
self.log_message_raw(("bold",
465
463
"q: Quit ?: Help"))
466
464
467
465
self.busname = domain + '.Mandos'
468
self.main_loop = GLib.MainLoop()
469
466
self.main_loop = gobject.MainLoop()
467
470
468
def client_not_found(self, fingerprint, address):
471
469
self.log_message("Client with address {} and fingerprint {}"
472
470
" could not be found"
473
471
.format(address, fingerprint))
474
472
475
473
def rebuild(self):
476
474
"""This rebuilds the User Interface.
477
475
Call this when the widget layout needs to change"""
478
476
self.uilist = []
479
# self.uilist.append(urwid.ListBox(self.clients))
477
#self.uilist.append(urwid.ListBox(self.clients))
480
478
self.uilist.append(urwid.Frame(ConstrainedListBox(self.
481
479
clients),
482
# header=urwid.Divider(),
480
#header=urwid.Divider(),
483
481
header=None,
484
footer=urwid.Divider(
485
div_char=self.divider)))
482
footer=
483
urwid.Divider(div_char=
484
self.divider)))
486
485
if self.log_visible:
487
486
self.uilist.append(self.logbox)
488
487
self.topwidget = urwid.Pile(self.uilist)
489
488
490
489
def log_message(self, message, level=1):
491
490
"""Log message formatted with timestamp"""
492
491
if level < self.log_level:
494
493
timestamp = datetime.datetime.now().isoformat()
495
494
self.log_message_raw("{}: {}".format(timestamp, message),
496
495
level=level)
497
496
498
497
def log_message_raw(self, markup, level=1):
499
498
"""Add a log message to the log buffer."""
500
499
if level < self.log_level:
501
500
return
502
501
self.log.append(urwid.Text(markup, wrap=self.log_wrap))
503
if self.max_log_length:
504
if len(self.log) > self.max_log_length:
505
del self.log[0:len(self.log)-self.max_log_length-1]
502
if (self.max_log_length
503
and len(self.log) > self.max_log_length):
504
del self.log[0:len(self.log)-self.max_log_length-1]
506
505
self.logbox.set_focus(len(self.logbox.body.contents),
507
506
coming_from="above")
508
507
self.refresh()
509
508
510
509
def toggle_log_display(self):
511
510
"""Toggle visibility of the log buffer."""
512
511
self.log_visible = not self.log_visible
513
512
self.rebuild()
514
513
self.log_message("Log visibility changed to: {}"
515
514
.format(self.log_visible), level=0)
516
515
517
516
def change_log_display(self):
518
517
"""Change type of log display.
519
518
Currently, this toggles wrapping of text lines."""
525
524
textwidget.set_wrap_mode(self.log_wrap)
526
525
self.log_message("Wrap mode: {}".format(self.log_wrap),
527
526
level=0)
528
529
def find_and_remove_client(self, path, interfaces):
527
528
def find_and_remove_client(self, path, name):
530
529
"""Find a client by its object path and remove it.
531
532
This is connected to the InterfacesRemoved signal from the
530
531
This is connected to the ClientRemoved signal from the
533
532
Mandos server object."""
534
if client_interface not in interfaces:
535
# Not a Mandos client object; ignore
536
return
537
533
try:
538
534
client = self.clients_dict[path]
539
535
except KeyError:
540
536
# not found?
541
self.log_message("Unknown client {!r} removed"
542
.format(path))
537
self.log_message("Unknown client {!r} ({!r}) removed"
538
.format(name, path))
543
539
return
544
540
client.delete()
545
546
def add_new_client(self, path, ifs_and_props):
547
"""Find a client by its object path and remove it.
548
549
This is connected to the InterfacesAdded signal from the
550
Mandos server object.
551
"""
552
if client_interface not in ifs_and_props:
553
# Not a Mandos client object; ignore
554
return
541
542
def add_new_client(self, path):
555
543
client_proxy_object = self.bus.get_object(self.busname, path)
556
self.add_client(MandosClientWidget(
557
server_proxy_object=self.mandos_serv,
558
proxy_object=client_proxy_object,
559
update_hook=self.refresh,
560
delete_hook=self.remove_client,
561
logger=self.log_message,
562
properties=dict(ifs_and_props[client_interface])),
544
self.add_client(MandosClientWidget(server_proxy_object
545
=self.mandos_serv,
546
proxy_object
547
=client_proxy_object,
548
update_hook
549
=self.refresh,
550
delete_hook
551
=self.remove_client,
552
logger
553
=self.log_message),
563
554
path=path)
564
555
565
556
def add_client(self, client, path=None):
566
557
self.clients.append(client)
567
558
if path is None:
569
560
self.clients_dict[path] = client
570
561
self.clients.sort(key=lambda c: c.properties["Name"])
571
562
self.refresh()
572
563
573
564
def remove_client(self, client, path=None):
574
565
self.clients.remove(client)
575
566
if path is None:
576
567
path = client.proxy.object_path
577
568
del self.clients_dict[path]
578
569
self.refresh()
579
570
580
571
def refresh(self):
581
572
"""Redraw the screen"""
582
573
canvas = self.topwidget.render(self.size, focus=True)
583
574
self.screen.draw_screen(self.size, canvas)
584
575
585
576
def run(self):
586
577
"""Start the main loop and exit when it's done."""
587
578
self.bus = dbus.SystemBus()
588
579
mandos_dbus_objc = self.bus.get_object(
589
580
self.busname, "/", follow_name_owner_changes=True)
590
self.mandos_serv = dbus.Interface(
591
mandos_dbus_objc, dbus_interface=server_interface)
581
self.mandos_serv = dbus.Interface(mandos_dbus_objc,
582
dbus_interface
583
= server_interface)
592
584
try:
593
585
mandos_clients = (self.mandos_serv
594
586
.GetAllClientsWithProperties())
595
587
if not mandos_clients:
596
self.log_message_raw(("bold",
597
"Note: Server has no clients."))
588
self.log_message_raw(("bold", "Note: Server has no clients."))
598
589
except dbus.exceptions.DBusException:
599
self.log_message_raw(("bold",
600
"Note: No Mandos server running."))
590
self.log_message_raw(("bold", "Note: No Mandos server running."))
601
591
mandos_clients = dbus.Dictionary()
602
592
603
593
(self.mandos_serv
604
.connect_to_signal("InterfacesRemoved",
594
.connect_to_signal("ClientRemoved",
605
595
self.find_and_remove_client,
606
dbus_interface=dbus.OBJECT_MANAGER_IFACE,
596
dbus_interface=server_interface,
607
597
byte_arrays=True))
608
598
(self.mandos_serv
609
.connect_to_signal("InterfacesAdded",
599
.connect_to_signal("ClientAdded",
610
600
self.add_new_client,
611
dbus_interface=dbus.OBJECT_MANAGER_IFACE,
601
dbus_interface=server_interface,
612
602
byte_arrays=True))
613
603
(self.mandos_serv
614
604
.connect_to_signal("ClientNotFound",
618
608
for path, client in mandos_clients.items():
619
609
client_proxy_object = self.bus.get_object(self.busname,
620
610
path)
621
self.add_client(MandosClientWidget(
622
server_proxy_object=self.mandos_serv,
623
proxy_object=client_proxy_object,
624
properties=client,
625
update_hook=self.refresh,
626
delete_hook=self.remove_client,
627
logger=self.log_message),
611
self.add_client(MandosClientWidget(server_proxy_object
612
=self.mandos_serv,
613
proxy_object
614
=client_proxy_object,
615
properties=client,
616
update_hook
617
=self.refresh,
618
delete_hook
619
=self.remove_client,
620
logger
621
=self.log_message),
628
622
path=path)
629
623
630
624
self.refresh()
631
self._input_callback_tag = (GLib.io_add_watch
625
self._input_callback_tag = (gobject.io_add_watch
632
626
(sys.stdin.fileno(),
633
GLib.IO_IN,
627
gobject.IO_IN,
634
628
self.process_input))
635
629
self.main_loop.run()
636
630
# Main loop has finished, we should close everything now
637
GLib.source_remove(self._input_callback_tag)
631
gobject.source_remove(self._input_callback_tag)
638
632
self.screen.stop()
639
633
640
634
def stop(self):
641
635
self.main_loop.quit()
642
636
643
637
def process_input(self, source, condition):
644
638
keys = self.screen.get_input()
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
652
"j": "down", # vi
653
"k": "up", # vi
654
}
639
translations = { "ctrl n": "down", # Emacs
640
"ctrl p": "up", # Emacs
641
"ctrl v": "page down", # Emacs
642
"meta v": "page up", # Emacs
643
" ": "page down", # less
644
"f": "page down", # less
645
"b": "page up", # less
646
"j": "down", # vi
647
"k": "up", # vi
648
}
655
649
for key in keys:
656
650
try:
657
651
key = translations[key]
658
652
except KeyError: # :-)
659
653
pass
660
654
661
655
if key == "q" or key == "Q":
662
656
self.stop()
663
657
break
711
705
else:
712
706
self.log_level = 0
713
707
self.log_message("Verbose mode: On")
714
# elif (key == "end" or key == "meta >" or key == "G"
715
# or key == ">"):
716
# pass # xxx end-of-buffer
717
# elif (key == "home" or key == "meta <" or key == "g"
718
# or key == "<"):
719
# pass # xxx beginning-of-buffer
720
# elif key == "ctrl e" or key == "$":
721
# pass # xxx move-end-of-line
722
# elif key == "ctrl a" or key == "^":
723
# pass # xxx move-beginning-of-line
724
# elif key == "ctrl b" or key == "meta (" or key == "h":
725
# pass # xxx left
726
# elif key == "ctrl f" or key == "meta )" or key == "l":
727
# pass # xxx right
728
# elif key == "a":
729
# pass # scroll up log
730
# elif key == "z":
731
# pass # scroll down log
708
#elif (key == "end" or key == "meta >" or key == "G"
709
# or key == ">"):
710
# pass # xxx end-of-buffer
711
#elif (key == "home" or key == "meta <" or key == "g"
712
# or key == "<"):
713
# pass # xxx beginning-of-buffer
714
#elif key == "ctrl e" or key == "$":
715
# pass # xxx move-end-of-line
716
#elif key == "ctrl a" or key == "^":
717
# pass # xxx move-beginning-of-line
718
#elif key == "ctrl b" or key == "meta (" or key == "h":
719
# pass # xxx left
720
#elif key == "ctrl f" or key == "meta )" or key == "l":
721
# pass # xxx right
722
#elif key == "a":
723
# pass # scroll up log
724
#elif key == "z":
725
# pass # scroll down log
732
726
elif self.topwidget.selectable():
733
727
self.topwidget.keypress(self.size, key)
734
728
self.refresh()
735
729
return True
736
730
737
738
731
ui = UserInterface()
739
732
try:
740
733
ui.run()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0