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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 © 2009-2016 Teddy Hogeborn
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# Copyright © 2009-2016 Björn Påhlsson
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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# Contact the authors at <mandos@recompile.se>.
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from __future__ import (division, absolute_import, print_function,
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from future_builtins import *
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from __future__ import division, absolute_import, with_statement
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from dbus.mainloop.glib import DBusGMainLoop
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from gi.repository import GObject as gobject
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if sys.version_info.major == 2:
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locale.setlocale(locale.LC_ALL, '')
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locale.setlocale(locale.LC_ALL, u'')
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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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domain = 'se.bsnet.fukt'
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server_interface = domain + '.Mandos'
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client_interface = domain + '.Mandos.Client'
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dbus.OBJECT_MANAGER_IFACE
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except AttributeError:
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dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
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# 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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def isoformat_to_datetime(iso):
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"Parse an ISO 8601 date string to a datetime.datetime()"
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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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d, t = iso.split(u"T", 1)
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year, month, day = d.split(u"-", 2)
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hour, minute, second = t.split(u":", 2)
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second, fraction = divmod(float(second), 1)
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return datetime.datetime(int(year),
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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, properties=None, **kwargs):
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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() 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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if properties is None:
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self.properties.update(
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self.proxy.GetAll(client_interface,
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= dbus.PROPERTIES_IFACE))
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super(MandosClientPropertyCache, self).__init__(**kwargs)
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self.properties = dict()
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self.proxy.connect_to_signal(u"PropertyChanged",
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self.property_changed,
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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 break good super behaviour!
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# super(MandosClientPropertyCache, self).__init__(
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def properties_changed(self, interface, properties, invalidated):
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"""This is called whenever we get a PropertiesChanged signal
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It updates the changed properties in the "properties" dict.
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def property_changed(self, property=None, value=None):
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"""This is called whenever we get a PropertyChanged signal
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It updates the changed property in the "properties" dict.
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# Update properties dict with new value
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if interface == client_interface:
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self.properties.update(properties)
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self.property_changed_match.remove()
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self.properties[property] = value
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class MandosClientWidget(urwid.FlowWidget, MandosClientPropertyCache):
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self.logger = logger
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self._update_timer_callback_tag = None
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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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self._text_widget = urwid.Text(u"")
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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__(**kwargs)
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self._focus_text_widget = urwid.Text(u"")
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super(MandosClientWidget, self).__init__(
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update_hook=update_hook, delete_hook=delete_hook,
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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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self.proxy.connect_to_signal("CheckerStarted",
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self.checker_started,
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self.proxy.connect_to_signal("GotSecret",
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self.proxy.connect_to_signal("NeedApproval",
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self.proxy.connect_to_signal("Rejected",
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self.logger('Created client {}'
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.format(self.properties["Name"]), level=0)
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def using_timer(self, flag):
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"""Call this method with True or False when timer should be
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activated or deactivated.
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if flag and self._update_timer_callback_tag is None:
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# Will update the shown timer value every second
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self.proxy.connect_to_signal(u"CheckerCompleted",
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self.checker_completed,
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self.proxy.connect_to_signal(u"CheckerStarted",
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self.checker_started,
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self.proxy.connect_to_signal(u"GotSecret",
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self.proxy.connect_to_signal(u"NeedApproval",
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self.proxy.connect_to_signal(u"Rejected",
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last_checked_ok = isoformat_to_datetime(self.properties
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if last_checked_ok is None:
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self.last_checker_failed = True
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self.last_checker_failed = ((datetime.datetime.utcnow()
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if self.last_checker_failed:
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self._update_timer_callback_tag = (gobject.timeout_add
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self.update_timer))
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elif not (flag or self._update_timer_callback_tag is None):
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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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' succeeded'.format(self.properties["Name"],
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if self.last_checker_failed:
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self.last_checker_failed = False
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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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#self.logger(u'Checker for client %s (command "%s")'
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# % (self.properties[u"Name"], command))
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if not self.last_checker_failed:
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self.last_checker_failed = True
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self._update_timer_callback_tag = (gobject.timeout_add
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if os.WIFEXITED(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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self.logger(u'Checker for client %s (command "%s")'
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u' failed with exit code %s'
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% (self.properties[u"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 {} (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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self.logger(u'Checker for client %s (command "%s")'
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u' was killed by signal %s'
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% (self.properties[u"Name"], command,
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os.WTERMSIG(condition)))
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elif os.WCOREDUMP(condition):
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self.logger(u'Checker for client %s (command "%s")'
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% (self.properties[u"Name"], command))
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self.logger(u'Checker for client %s completed'
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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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#self.logger(u'Client %s started checker "%s"'
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# % (self.properties[u"Name"], unicode(command)))
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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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self.last_checker_failed = False
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self.logger(u'Client %s received its secret'
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% self.properties[u"Name"])
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def need_approval(self, timeout, default):
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message = 'Client {} needs approval within {} seconds'
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message = u'Client %s needs approval within %s 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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message = u'Client %s will get its secret in %s seconds'
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% (self.properties[u"Name"], 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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self.logger(u'Client %s was rejected; reason: %s'
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% (self.properties[u"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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def rows(self, (maxcol,), 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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return self.current_widget(focus).rows((maxcol,), 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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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 = { u"normal": u"standout",
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u"bold": u"bold-standout",
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u"underline-blink-standout",
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u"bold-underline-blink":
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u"bold-underline-blink-standout",
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# Rebuild focus and non-focus widgets using current properties
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# Base part of a client. Name!
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base = '{name}: '.format(name=self.properties["Name"])
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if not self.properties["Enabled"]:
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self.using_timer(False)
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elif self.properties["ApprovalPending"]:
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base = (u'%(name)s: '
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% {u"name": self.properties[u"Name"]})
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if not self.properties[u"Enabled"]:
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message = u"DISABLED"
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elif self.properties[u"ApprovalPending"]:
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if self.properties[u"ApprovedByDefault"]:
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message = u"Connection established to client. (d)eny?"
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message = u"Seeks approval to send secret. (a)pprove?"
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elif self.last_checker_failed:
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timeout = datetime.timedelta(milliseconds
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= self.properties
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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 = 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 {}. (d)eny?"
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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, show timer until client expires
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expires = self.properties["Expires"]
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timer = datetime.timedelta(0)
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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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.format(str(timer).rsplit(".", 1)[0]))
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self.using_timer(True)
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last_ok = isoformat_to_datetime(
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max((self.properties[u"LastCheckedOK"]
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or self.properties[u"Created"]),
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self.properties[u"LastEnabled"]))
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timer = timeout - (datetime.datetime.utcnow() - last_ok)
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message = (u'A checker has failed! Time until client'
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% unicode(timer).rsplit(".", 1)[0])
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self.using_timer(False)
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self._text = "{}{}".format(base, message)
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self._text = "%s%s" % (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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textlist = [(u"normal", self._text)]
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self._text_widget.set_text(textlist)
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self._focus_text_widget.set_text([(with_standout[text[0]],
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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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return True # Keep calling this
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def delete(self, **kwargs):
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if self._update_timer_callback_tag is not None:
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gobject.source_remove(self._update_timer_callback_tag)
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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(**kwargs)
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def render(self, maxcolrow, focus=False):
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def render(self, (maxcol,), 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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return self.current_widget(focus).render((maxcol,),
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def keypress(self, maxcolrow, key):
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def keypress(self, (maxcol,), key):
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This overrides the method from urwid.FlowWidget"""
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self.proxy.Set(client_interface, "Enabled",
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dbus.Boolean(True), ignore_reply = True,
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dbus_interface = dbus.PROPERTIES_IFACE)
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self.proxy.Set(client_interface, "Enabled", False,
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dbus_interface = dbus.PROPERTIES_IFACE)
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self.proxy.Enable(dbus_interface = client_interface)
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self.proxy.Disable(dbus_interface = client_interface)
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self.proxy.Approve(dbus.Boolean(True, variant_level=1),
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dbus_interface = client_interface,
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dbus_interface = client_interface)
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self.proxy.Approve(dbus.Boolean(False, variant_level=1),
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dbus_interface = client_interface,
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elif key == "R" or key == "_" or key == "ctrl k":
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dbus_interface = client_interface)
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elif key == u"r" or key == u"_" or key == u"ctrl k":
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self.server_proxy_object.RemoveClient(self.proxy
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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.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.StartChecker(dbus_interface = client_interface)
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self.proxy.StopChecker(dbus_interface = client_interface)
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self.proxy.CheckedOK(dbus_interface = client_interface)
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# elif key == "p" or key == "=":
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# elif key == u"p" or key == "=":
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# self.proxy.pause()
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# elif key == "u" or key == ":":
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# elif key == u"u" or key == ":":
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# self.proxy.unpause()
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# elif key == u"RET":
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# self.proxy.Approve(True)
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# self.proxy.Approve(False)
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def properties_changed(self, interface, properties, invalidated):
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"""Call self.update() if any properties changed.
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def property_changed(self, property=None, value=None,
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"""Call self.update() if old value is not new value.
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This overrides the method from MandosClientPropertyCache"""
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old_values = { key: self.properties.get(key)
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for key in properties.keys() }
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super(MandosClientWidget, self).properties_changed(
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interface, properties, invalidated)
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if any(old_values[key] != self.properties.get(key)
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for key in old_values):
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property_name = unicode(property)
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old_value = self.properties.get(property_name)
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super(MandosClientWidget, self).property_changed(
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property=property, value=value, *args, **kwargs)
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if self.properties.get(property_name) != old_value:
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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, log_level=1):
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def __init__(self, max_log_length=1000):
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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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"bold", "default", "bold"),
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"underline,blink", "default", "underline,blink"),
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"standout", "default", "standout"),
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("bold-underline-blink",
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"bold,underline,blink", "default", "bold,underline,blink"),
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"bold,standout", "default", "bold,standout"),
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("underline-blink-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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"bold,underline,blink,standout", "default",
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"bold,underline,blink,standout"),
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u"default", u"default", None),
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u"default", u"default", u"bold"),
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u"default", u"default", u"underline"),
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u"default", u"default", u"standout"),
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(u"bold-underline-blink",
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u"default", u"default", (u"bold", u"underline")),
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u"default", u"default", (u"bold", u"standout")),
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(u"underline-blink-standout",
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u"default", u"default", (u"underline", u"standout")),
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(u"bold-underline-blink-standout",
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u"default", u"default", (u"bold", u"underline",
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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 = u"─" # \u2500
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#self.divider = u"━" # \u2501
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#self.divider = "-" # \u002d
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self.divider = "_" # \u005f
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#self.divider = u"-" # \u002d
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self.divider = u"_" # \u005f
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self.screen.start()
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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_wrap = u"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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self.log_message_raw((u"bold",
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u"Mandos Monitor version " + version))
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self.log_message_raw((u"bold",
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self.busname = domain + '.Mandos'
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self.main_loop = gobject.MainLoop()
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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, u"/", follow_name_owner_changes=True)
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self.mandos_serv = dbus.Interface(mandos_dbus_objc,
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mandos_clients = (self.mandos_serv
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.GetAllClientsWithProperties())
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except dbus.exceptions.DBusException:
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mandos_clients = dbus.Dictionary()
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.connect_to_signal(u"ClientRemoved",
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self.find_and_remove_client,
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dbus_interface=server_interface,
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.connect_to_signal(u"ClientAdded",
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dbus_interface=server_interface,
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.connect_to_signal(u"ClientNotFound",
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self.client_not_found,
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dbus_interface=server_interface,
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for path, client in mandos_clients.iteritems():
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client_proxy_object = self.bus.get_object(self.busname,
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self.add_client(MandosClientWidget(server_proxy_object
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=client_proxy_object,
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def client_not_found(self, fingerprint, address):
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self.log_message("Client with address {} and fingerprint {}"
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" could not be found"
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.format(address, fingerprint))
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self.log_message((u"Client with address %s and fingerprint %s"
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u" could not be found" % (address,
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def rebuild(self):
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"""This rebuilds the User Interface.
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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, level=1):
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"""Log message formatted with timestamp"""
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if level < self.log_level:
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def log_message(self, message):
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timestamp = datetime.datetime.now().isoformat()
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self.log_message_raw("{}: {}".format(timestamp, message),
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self.log_message_raw(timestamp + u": " + message)
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def log_message_raw(self, markup, level=1):
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def log_message_raw(self, markup):
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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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coming_from=u"above")
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def toggle_log_display(self):
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"""Toggle visibility of the log buffer."""
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self.log_visible = not self.log_visible
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self.log_message("Log visibility changed to: {}"
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.format(self.log_visible), level=0)
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self.log_message(u"Log visibility changed to: "
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+ unicode(self.log_visible))
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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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if self.log_wrap == "clip":
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self.log_wrap = "any"
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if self.log_wrap == u"clip":
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self.log_wrap = u"any"
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self.log_wrap = "clip"
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self.log_wrap = u"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: {}".format(self.log_wrap),
519
self.log_message(u"Wrap mode: " + self.log_wrap)
530
def find_and_remove_client(self, path, interfaces):
531
"""Find a client by its object path and remove it.
521
def find_and_remove_client(self, path, name):
522
"""Find an client from its object path and remove it.
533
This is connected to the InterfacesRemoved signal from the
524
This is connected to the ClientRemoved signal from the
534
525
Mandos server object."""
535
if client_interface not in interfaces:
536
# Not a Mandos client object; ignore
539
527
client = self.clients_dict[path]
542
self.log_message("Unknown client {!r} removed"
531
self.remove_client(client, path)
547
def add_new_client(self, path, ifs_and_props):
548
"""Find a client by its object path and remove it.
550
This is connected to the InterfacesAdded signal from the
551
Mandos server object.
553
if client_interface not in ifs_and_props:
554
# Not a Mandos client object; ignore
533
def add_new_client(self, path):
556
534
client_proxy_object = self.bus.get_object(self.busname, path)
557
535
self.add_client(MandosClientWidget(server_proxy_object
558
536
=self.mandos_serv,
593
573
"""Start the main loop and exit when it's done."""
594
self.bus = dbus.SystemBus()
595
mandos_dbus_objc = self.bus.get_object(
596
self.busname, "/", follow_name_owner_changes=True)
597
self.mandos_serv = dbus.Interface(mandos_dbus_objc,
601
mandos_clients = (self.mandos_serv
602
.GetAllClientsWithProperties())
603
if not mandos_clients:
604
self.log_message_raw(("bold", "Note: Server has no clients."))
605
except dbus.exceptions.DBusException:
606
self.log_message_raw(("bold", "Note: No Mandos server running."))
607
mandos_clients = dbus.Dictionary()
610
.connect_to_signal("InterfacesRemoved",
611
self.find_and_remove_client,
613
= dbus.OBJECT_MANAGER_IFACE,
616
.connect_to_signal("InterfacesAdded",
619
= dbus.OBJECT_MANAGER_IFACE,
622
.connect_to_signal("ClientNotFound",
623
self.client_not_found,
624
dbus_interface=server_interface,
626
for path, client in mandos_clients.items():
627
client_proxy_object = self.bus.get_object(self.busname,
629
self.add_client(MandosClientWidget(server_proxy_object
632
=client_proxy_object,
643
575
self._input_callback_tag = (gobject.io_add_watch
644
576
(sys.stdin.fileno(),
670
602
except KeyError: # :-)
673
if key == "q" or key == "Q":
605
if key == u"q" or key == u"Q":
676
elif key == "window resize":
608
elif key == u"window resize":
677
609
self.size = self.screen.get_cols_rows()
679
elif key == "ctrl l":
611
elif key == u"\f": # Ctrl-L
682
elif key == "l" or key == "D":
613
elif key == u"l" or key == u"D":
683
614
self.toggle_log_display()
685
elif key == "w" or key == "i":
616
elif key == u"w" or key == u"i":
686
617
self.change_log_display()
688
elif key == "?" or key == "f1" or key == "esc":
619
elif key == u"?" or key == u"f1" or key == u"esc":
689
620
if not self.log_visible:
690
621
self.log_visible = True
692
self.log_message_raw(("bold",
696
"l: Log window toggle",
697
"TAB: Switch window",
698
"w: Wrap (log lines)",
699
"v: Toggle verbose log",
701
self.log_message_raw(("bold",
707
"s: Start new checker",
623
self.log_message_raw((u"bold",
627
u"l: Log window toggle",
628
u"TAB: Switch window",
630
self.log_message_raw((u"bold",
636
u"s: Start new checker",
714
643
if self.topwidget.get_focus() is self.logbox:
715
644
self.topwidget.set_focus(0)
717
646
self.topwidget.set_focus(self.logbox)
720
if self.log_level == 0:
722
self.log_message("Verbose mode: Off")
725
self.log_message("Verbose mode: On")
726
#elif (key == "end" or key == "meta >" or key == "G"
648
#elif (key == u"end" or key == u"meta >" or key == u"G"
728
650
# pass # xxx end-of-buffer
729
#elif (key == "home" or key == "meta <" or key == "g"
651
#elif (key == u"home" or key == u"meta <" or key == u"g"
731
653
# pass # xxx beginning-of-buffer
732
#elif key == "ctrl e" or key == "$":
654
#elif key == u"ctrl e" or key == u"$":
733
655
# pass # xxx move-end-of-line
734
#elif key == "ctrl a" or key == "^":
656
#elif key == u"ctrl a" or key == u"^":
735
657
# pass # xxx move-beginning-of-line
736
#elif key == "ctrl b" or key == "meta (" or key == "h":
658
#elif key == u"ctrl b" or key == u"meta (" or key == u"h":
737
659
# pass # xxx left
738
#elif key == "ctrl f" or key == "meta )" or key == "l":
660
#elif key == u"ctrl f" or key == u"meta )" or key == u"l":
739
661
# pass # xxx right
741
663
# pass # scroll up log
743
665
# pass # scroll down log
744
666
elif self.topwidget.selectable():
745
667
self.topwidget.keypress(self.size, key)