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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, with_statement
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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 dbus.mainloop.glib import DBusGMainLoop
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from gi.repository import GObject as gobject
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locale.setlocale(locale.LC_ALL, u'')
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if sys.version_info.major == 2:
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locale.setlocale(locale.LC_ALL, '')
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logging.getLogger('dbus.proxies').setLevel(logging.CRITICAL)
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# Some useful constants
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domain = 'se.bsnet.fukt'
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domain = 'se.recompile'
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server_interface = domain + '.Mandos'
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client_interface = domain + '.Mandos.Client'
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# 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(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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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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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, *args, **kwargs):
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def __init__(self, proxy_object=None, properties=None, **kwargs):
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self.proxy = proxy_object # Mandos Client proxy object
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self.properties = dict()
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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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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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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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def properties_changed(self, interface, properties, invalidated):
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"""This is called whenever we get a PropertiesChanged signal
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It updates the changed properties in the "properties" dict.
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# Update properties dict with new value
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self.properties[property] = value
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self.properties.update(properties)
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self.property_changed_match.remove()
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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(u"")
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self._text_widget = urwid.Text("")
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# The widget shown when we have focus
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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._focus_text_widget = urwid.Text("")
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super(MandosClientWidget, self).__init__(**kwargs)
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self.opened = False
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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.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._update_timer_callback_tag = (gobject.timeout_add
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self.update_timer))
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elif not (flag or self._update_timer_callback_tag is None):
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gobject.source_remove(self._update_timer_callback_tag)
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self._update_timer_callback_tag = None
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def checker_completed(self, exitstatus, condition, command):
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def checker_completed(self, exitstatus, signal, command):
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if exitstatus == 0:
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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 "{}")'
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' succeeded'.format(self.properties["Name"],
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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 {} (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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self.logger(u'Checker for client %s completed mysteriously')
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self.logger('Checker for client {} completed'
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.format(self.properties["Name"]))
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def checker_started(self, command):
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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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"""Server signals that a checker started."""
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self.logger('Client {} started checker "{}"'
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.format(self.properties["Name"],
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def got_secret(self):
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self.logger(u'Client %s received its secret'
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% self.properties[u"name"])
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self.logger('Client {} received its secret'
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.format(self.properties["Name"]))
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def need_approval(self, timeout, default):
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message = u'Client %s needs approval within %s seconds'
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message = 'Client {} needs approval within {} seconds'
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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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message = 'Client {} will get its secret in {} seconds'
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self.logger(message.format(self.properties["Name"],
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def rejected(self, reason):
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self.logger(u'Client %s was rejected; reason: %s'
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% (self.properties[u"name"], reason))
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self.logger('Client {} was rejected; reason: {}'
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.format(self.properties["Name"], reason))
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def selectable(self):
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"""Make this a "selectable" widget.
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This overrides the method from urwid.FlowWidget."""
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def rows(self, (maxcol,), focus=False):
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def rows(self, maxcolrow, focus=False):
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"""How many rows this widget will occupy might depend on
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whether we have focus or not.
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This overrides the method from urwid.FlowWidget"""
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return self.current_widget(focus).rows((maxcol,), focus=focus)
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return self.current_widget(focus).rows(maxcolrow, focus=focus)
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def current_widget(self, focus=False):
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if focus or self.opened:
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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 = { 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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with_standout = { "normal": "standout",
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"bold": "bold-standout",
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"underline-blink-standout",
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"bold-underline-blink":
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"bold-underline-blink-standout",
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# Rebuild focus and non-focus widgets using current properties
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# Base part of a client. Name!
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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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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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timeout = datetime.timedelta(milliseconds
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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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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._text = "%s%s" % (base, message)
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self.using_timer(False)
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self._text = "{}{}".format(base, message)
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if not urwid.supports_unicode():
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self._text = self._text.encode("ascii", "replace")
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textlist = [(u"normal", self._text)]
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textlist = [("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, (maxcol,), focus=False):
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def render(self, maxcolrow, focus=False):
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"""Render differently if we have focus.
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This overrides the method from urwid.FlowWidget"""
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return self.current_widget(focus).render((maxcol,),
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return self.current_widget(focus).render(maxcolrow,
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def keypress(self, (maxcol,), key):
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def keypress(self, maxcolrow, key):
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This overrides the method from urwid.FlowWidget"""
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self.proxy.Enable(dbus_interface = client_interface)
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self.proxy.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 == u"r" or key == u"_" or key == u"ctrl k":
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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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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 == u"p" or key == "=":
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# elif key == "p" or key == "=":
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# self.proxy.pause()
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# elif key == u"u" or key == ":":
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# elif key == "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 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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def properties_changed(self, interface, properties, invalidated):
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"""Call self.update() if any properties changed.
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This overrides the method from MandosClientPropertyCache"""
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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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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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"""This is the entire user interface - the whole screen
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with boxes, lists of client widgets, etc.
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def __init__(self, max_log_length=1000):
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def __init__(self, max_log_length=1000, log_level=1):
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DBusGMainLoop(set_as_default=True)
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self.screen = urwid.curses_display.Screen()
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self.screen.register_palette((
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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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"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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if urwid.supports_unicode():
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self.divider = u"─" # \u2500
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#self.divider = u"━" # \u2501
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self.divider = "─" # \u2500
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#self.divider = "━" # \u2501
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#self.divider = u"-" # \u002d
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self.divider = u"_" # \u005f
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#self.divider = "-" # \u002d
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self.divider = "_" # \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 = u"any"
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self.log_wrap = "any"
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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.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.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((u"Client with address %s and fingerprint %s"
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u" could not be found" % (address,
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self.log_message("Client with address {} and fingerprint {}"
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" could not be found"
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.format(address, fingerprint))
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def rebuild(self):
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"""This rebuilds the User Interface.
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Call this when the widget layout needs to change"""
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#self.uilist.append(urwid.ListBox(self.clients))
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self.uilist.append(urwid.Frame(ConstrainedListBox(self.clients),
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self.uilist.append(urwid.Frame(ConstrainedListBox(self.
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#header=urwid.Divider(),
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footer=urwid.Divider(div_char=self.divider)))
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urwid.Divider(div_char=
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if self.log_visible:
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self.uilist.append(self.logbox)
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self.topwidget = urwid.Pile(self.uilist)
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def log_message(self, message):
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def log_message(self, message, level=1):
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"""Log message formatted with timestamp"""
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if level < self.log_level:
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timestamp = datetime.datetime.now().isoformat()
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self.log_message_raw(timestamp + u": " + message)
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self.log_message_raw("{}: {}".format(timestamp, message),
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def log_message_raw(self, markup):
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def log_message_raw(self, markup, level=1):
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"""Add a log message to the log buffer."""
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if level < self.log_level:
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self.log.append(urwid.Text(markup, wrap=self.log_wrap))
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if (self.max_log_length
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and len(self.log) > self.max_log_length):
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del self.log[0:len(self.log)-self.max_log_length-1]
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self.logbox.set_focus(len(self.logbox.body.contents),
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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(u"Log visibility changed to: "
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+ unicode(self.log_visible))
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self.log_message("Log visibility changed to: {}"
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.format(self.log_visible), level=0)
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def change_log_display(self):
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"""Change type of log display.
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Currently, this toggles wrapping of text lines."""
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if self.log_wrap == u"clip":
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self.log_wrap = u"any"
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if self.log_wrap == "clip":
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self.log_wrap = "any"
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self.log_wrap = u"clip"
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self.log_wrap = "clip"
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for textwidget in self.log:
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textwidget.set_wrap_mode(self.log_wrap)
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self.log_message(u"Wrap mode: " + self.log_wrap)
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self.log_message("Wrap mode: {}".format(self.log_wrap),
512
524
def find_and_remove_client(self, path, name):
513
"""Find an client from its object path and remove it.
525
"""Find a client by its object path and remove it.
515
527
This is connected to the ClientRemoved signal from the
516
528
Mandos server object."""
564
573
"""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,
566
621
self._input_callback_tag = (gobject.io_add_watch
567
622
(sys.stdin.fileno(),
593
648
except KeyError: # :-)
596
if key == u"q" or key == u"Q":
651
if key == "q" or key == "Q":
599
elif key == u"window resize":
654
elif key == "window resize":
600
655
self.size = self.screen.get_cols_rows()
602
elif key == u"\f": # Ctrl-L
657
elif key == "ctrl l":
604
elif key == u"l" or key == u"D":
660
elif key == "l" or key == "D":
605
661
self.toggle_log_display()
607
elif key == u"w" or key == u"i":
663
elif key == "w" or key == "i":
608
664
self.change_log_display()
610
elif key == u"?" or key == u"f1" or key == u"esc":
666
elif key == "?" or key == "f1" or key == "esc":
611
667
if not self.log_visible:
612
668
self.log_visible = True
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",
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",
634
692
if self.topwidget.get_focus() is self.logbox:
635
693
self.topwidget.set_focus(0)
637
695
self.topwidget.set_focus(self.logbox)
639
#elif (key == u"end" or key == u"meta >" or key == u"G"
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"
641
706
# pass # xxx end-of-buffer
642
#elif (key == u"home" or key == u"meta <" or key == u"g"
707
#elif (key == "home" or key == "meta <" or key == "g"
644
709
# pass # xxx beginning-of-buffer
645
#elif key == u"ctrl e" or key == u"$":
710
#elif key == "ctrl e" or key == "$":
646
711
# pass # xxx move-end-of-line
647
#elif key == u"ctrl a" or key == u"^":
712
#elif key == "ctrl a" or key == "^":
648
713
# pass # xxx move-beginning-of-line
649
#elif key == u"ctrl b" or key == u"meta (" or key == u"h":
714
#elif key == "ctrl b" or key == "meta (" or key == "h":
650
715
# pass # xxx left
651
#elif key == u"ctrl f" or key == u"meta )" or key == u"l":
716
#elif key == "ctrl f" or key == "meta )" or key == "l":
652
717
# pass # xxx right
654
719
# pass # scroll up log
656
721
# pass # scroll down log
657
722
elif self.topwidget.selectable():
658
723
self.topwidget.keypress(self.size, key)