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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 © 2009-2015 Teddy Hogeborn
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# Copyright © 2009-2015 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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# 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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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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self.properties["interval"]))
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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, signal, command):
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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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self.logger('Checker for client {} (command "{}") failed'
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.format(self.properties["Name"], command,
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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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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(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(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('Checker for client {} completed'
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.format(self.properties["Name"]))
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self.logger(u'Checker for client %s completed mysteriously')
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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.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.last_checker_failed:
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timeout = datetime.timedelta(milliseconds
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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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= self.properties[u"timeout"])
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last_ok = isoformat_to_datetime(
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max((self.properties["last_checked_ok"]
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or self.properties["created"]),
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self.properties[u"last_enabled"]))
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timer = timeout - (datetime.datetime.utcnow() - last_ok)
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message = (u'A checker has failed! Time until client gets diabled: %s'
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% unicode(timer).rsplit(".", 1)[0])
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elif self.properties[u"approved_pending"]:
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if self.properties[u"approved_by_default"]:
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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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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.Enable(dbus_interface = client_interface,
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self.proxy.Disable(dbus_interface = client_interface,
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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.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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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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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.Frame(ConstrainedListBox(self.
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self.uilist.append(urwid.Frame(ConstrainedListBox(self.clients),
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#header=urwid.Divider(),
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urwid.Divider(div_char=
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footer=urwid.Divider(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, 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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503
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),
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self.log_message(u"Wrap mode: " + self.log_wrap)
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512
def find_and_remove_client(self, path, name):
525
"""Find a client by its object path and remove it.
513
"""Find an client from its object path and remove it.
527
515
This is connected to the ClientRemoved signal from the
528
516
Mandos server object."""
573
564
"""Start the main loop and exit when it's done."""
574
self.bus = dbus.SystemBus()
575
mandos_dbus_objc = self.bus.get_object(
576
self.busname, "/", follow_name_owner_changes=True)
577
self.mandos_serv = dbus.Interface(mandos_dbus_objc,
581
mandos_clients = (self.mandos_serv
582
.GetAllClientsWithProperties())
583
if not mandos_clients:
584
self.log_message_raw(("bold", "Note: Server has no clients."))
585
except dbus.exceptions.DBusException:
586
self.log_message_raw(("bold", "Note: No Mandos server running."))
587
mandos_clients = dbus.Dictionary()
590
.connect_to_signal("ClientRemoved",
591
self.find_and_remove_client,
592
dbus_interface=server_interface,
595
.connect_to_signal("ClientAdded",
597
dbus_interface=server_interface,
600
.connect_to_signal("ClientNotFound",
601
self.client_not_found,
602
dbus_interface=server_interface,
604
for path, client in mandos_clients.items():
605
client_proxy_object = self.bus.get_object(self.busname,
607
self.add_client(MandosClientWidget(server_proxy_object
610
=client_proxy_object,
621
566
self._input_callback_tag = (gobject.io_add_watch
622
567
(sys.stdin.fileno(),
648
593
except KeyError: # :-)
651
if key == "q" or key == "Q":
596
if key == u"q" or key == u"Q":
654
elif key == "window resize":
599
elif key == u"window resize":
655
600
self.size = self.screen.get_cols_rows()
657
elif key == "ctrl l":
602
elif key == u"\f": # Ctrl-L
660
elif key == "l" or key == "D":
604
elif key == u"l" or key == u"D":
661
605
self.toggle_log_display()
663
elif key == "w" or key == "i":
607
elif key == u"w" or key == u"i":
664
608
self.change_log_display()
666
elif key == "?" or key == "f1" or key == "esc":
610
elif key == u"?" or key == u"f1" or key == u"esc":
667
611
if not self.log_visible:
668
612
self.log_visible = True
670
self.log_message_raw(("bold",
674
"l: Log window toggle",
675
"TAB: Switch window",
676
"w: Wrap (log lines)",
677
"v: Toggle verbose log",
679
self.log_message_raw(("bold",
685
"s: Start new checker",
614
self.log_message_raw((u"bold",
618
u"l: Log window toggle",
619
u"TAB: Switch window",
621
self.log_message_raw((u"bold",
627
u"s: Start new checker",
692
634
if self.topwidget.get_focus() is self.logbox:
693
635
self.topwidget.set_focus(0)
695
637
self.topwidget.set_focus(self.logbox)
698
if self.log_level == 0:
700
self.log_message("Verbose mode: Off")
703
self.log_message("Verbose mode: On")
704
#elif (key == "end" or key == "meta >" or key == "G"
639
#elif (key == u"end" or key == u"meta >" or key == u"G"
706
641
# pass # xxx end-of-buffer
707
#elif (key == "home" or key == "meta <" or key == "g"
642
#elif (key == u"home" or key == u"meta <" or key == u"g"
709
644
# pass # xxx beginning-of-buffer
710
#elif key == "ctrl e" or key == "$":
645
#elif key == u"ctrl e" or key == u"$":
711
646
# pass # xxx move-end-of-line
712
#elif key == "ctrl a" or key == "^":
647
#elif key == u"ctrl a" or key == u"^":
713
648
# pass # xxx move-beginning-of-line
714
#elif key == "ctrl b" or key == "meta (" or key == "h":
649
#elif key == u"ctrl b" or key == u"meta (" or key == u"h":
715
650
# pass # xxx left
716
#elif key == "ctrl f" or key == "meta )" or key == "l":
651
#elif key == u"ctrl f" or key == u"meta )" or key == u"l":
717
652
# pass # xxx right
719
654
# pass # scroll up log
721
656
# pass # scroll down log
722
657
elif self.topwidget.selectable():
723
658
self.topwidget.keypress(self.size, key)