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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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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'
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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),
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self.log_message(u"Wrap mode: " + self.log_wrap)
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def find_and_remove_client(self, path, name):
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"""Find a client by its object path and remove it.
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"""Find an client from its object path and remove it.
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This is connected to the ClientRemoved signal from the
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Mandos server object."""
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"""Start the main loop and exit when it's done."""
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self.bus = dbus.SystemBus()
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mandos_dbus_objc = self.bus.get_object(
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self.busname, "/", follow_name_owner_changes=True)
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self.mandos_serv = dbus.Interface(mandos_dbus_objc,
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mandos_clients = (self.mandos_serv
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.GetAllClientsWithProperties())
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if not mandos_clients:
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self.log_message_raw(("bold", "Note: Server has no clients."))
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except dbus.exceptions.DBusException:
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self.log_message_raw(("bold", "Note: No Mandos server running."))
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mandos_clients = dbus.Dictionary()
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.connect_to_signal("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("ClientAdded",
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dbus_interface=server_interface,
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.connect_to_signal("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.items():
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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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self._input_callback_tag = (gobject.io_add_watch
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(sys.stdin.fileno(),
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except KeyError: # :-)
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if key == "q" or key == "Q":
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if key == u"q" or key == u"Q":
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elif key == "window resize":
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elif key == u"window resize":
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self.size = self.screen.get_cols_rows()
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elif key == "ctrl l":
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elif key == u"\f": # Ctrl-L
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elif key == "l" or key == "D":
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elif key == u"l" or key == u"D":
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self.toggle_log_display()
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elif key == "w" or key == "i":
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elif key == u"w" or key == u"i":
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self.change_log_display()
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elif key == "?" or key == "f1" or key == "esc":
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elif key == u"?" or key == u"f1" or key == u"esc":
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if not self.log_visible:
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self.log_visible = True
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self.log_message_raw(("bold",
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"l: Log window toggle",
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"TAB: Switch window",
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"w: Wrap (log lines)",
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"v: Toggle verbose log",
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self.log_message_raw(("bold",
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"s: Start new checker",
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self.log_message_raw((u"bold",
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u"l: Log window toggle",
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u"TAB: Switch window",
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self.log_message_raw((u"bold",
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u"s: Start new checker",
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if self.topwidget.get_focus() is self.logbox:
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self.topwidget.set_focus(0)
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self.topwidget.set_focus(self.logbox)
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if self.log_level == 0:
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self.log_message("Verbose mode: Off")
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self.log_message("Verbose mode: On")
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#elif (key == "end" or key == "meta >" or key == "G"
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#elif (key == u"end" or key == u"meta >" or key == u"G"
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# pass # xxx end-of-buffer
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#elif (key == "home" or key == "meta <" or key == "g"
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#elif (key == u"home" or key == u"meta <" or key == u"g"
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# pass # xxx beginning-of-buffer
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#elif key == "ctrl e" or key == "$":
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#elif key == u"ctrl e" or key == u"$":
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# pass # xxx move-end-of-line
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#elif key == "ctrl a" or key == "^":
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#elif key == u"ctrl a" or key == u"^":
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# pass # xxx move-beginning-of-line
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#elif key == "ctrl b" or key == "meta (" or key == "h":
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#elif key == u"ctrl b" or key == u"meta (" or key == u"h":
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# pass # xxx left
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#elif key == "ctrl f" or key == "meta )" or key == "l":
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#elif key == u"ctrl f" or key == u"meta )" or key == u"l":
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# pass # xxx right
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# pass # scroll up log
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665
# pass # scroll down log
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666
elif self.topwidget.selectable():
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self.topwidget.keypress(self.size, key)