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- Committer: Teddy Hogeborn
- Date: 2009-09-17 11:42:12 UTC
- mto: (24.1.142 mandos) (237.12.2 mandos-persistent) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 264.
- Revision ID: teddy@fukt.bsnet.se-20090917114212-bmb2eq0c3modtgme
* TODO: Updated.
- files removed:
- DBUS-API
- debian/source
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
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#
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# Everything else is
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@recompile.se>.
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# Contact the authors at <mandos@fukt.bsnet.se>.
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#
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from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
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from __future__ import division, with_statement, absolute_import
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import SocketServer as socketserver
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import socket
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import argparse
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import optparse
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import datetime
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import errno
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import gnutls.crypto
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import logging
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import logging.handlers
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import pwd
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import contextlib
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from contextlib import closing
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import struct
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import fcntl
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import functools
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import cPickle as pickle
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import multiprocessing
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import types
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import dbus
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import dbus.service
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from dbus.mainloop.glib import DBusGMainLoop
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import ctypes
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import ctypes.util
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import xml.dom.minidom
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import inspect
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try:
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SO_BINDTODEVICE = socket.SO_BINDTODEVICE
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SO_BINDTODEVICE = None
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version = "1.4.1"
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version = "1.0.11"
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#logger = logging.getLogger('mandos')
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logger = logging.Logger('mandos')
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logger = logging.Logger(u'mandos')
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syslogger = (logging.handlers.SysLogHandler
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = str("/dev/log")))
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address = "/dev/log"))
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syslogger.setFormatter(logging.Formatter
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('Mandos [%(process)d]: %(levelname)s:'
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' %(message)s'))
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(u'Mandos [%(process)d]: %(levelname)s:'
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u' %(message)s'))
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logger.addHandler(syslogger)
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90
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
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' %(levelname)s:'
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' %(message)s'))
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console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
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u' %(levelname)s:'
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u' %(message)s'))
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logger.addHandler(console)
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class AvahiError(Exception):
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114
Attributes:
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interface: integer; avahi.IF_UNSPEC or an interface index.
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Used to optionally bind to the specified interface.
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name: string; Example: 'Mandos'
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type: string; Example: '_mandos._tcp'.
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name: string; Example: u'Mandos'
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type: string; Example: u'_mandos._tcp'.
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See <http://www.dns-sd.org/ServiceTypes.html>
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port: integer; what port to announce
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TXT: list of strings; TXT record for the service
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"""
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def __init__(self, interface = avahi.IF_UNSPEC, name = None,
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servicetype = None, port = None, TXT = None,
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domain = "", host = "", max_renames = 32768,
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domain = u"", host = u"", max_renames = 32768,
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protocol = avahi.PROTO_UNSPEC, bus = None):
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self.interface = interface
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self.name = name
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self.group = None # our entry group
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self.server = None
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self.bus = bus
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self.entry_group_state_changed_match = None
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def rename(self):
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"""Derived from the Avahi example code"""
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if self.rename_count >= self.max_renames:
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logger.critical("No suitable Zeroconf service name found"
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" after %i retries, exiting.",
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logger.critical(u"No suitable Zeroconf service name found"
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u" after %i retries, exiting.",
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self.rename_count)
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raise AvahiServiceError("Too many renames")
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self.name = unicode(self.server
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.GetAlternativeServiceName(self.name))
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logger.info("Changing Zeroconf service name to %r ...",
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self.name)
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raise AvahiServiceError(u"Too many renames")
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self.name = self.server.GetAlternativeServiceName(self.name)
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logger.info(u"Changing Zeroconf service name to %r ...",
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unicode(self.name))
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syslogger.setFormatter(logging.Formatter
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('Mandos (%s) [%%(process)d]:'
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' %%(levelname)s: %%(message)s'
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(u'Mandos (%s) [%%(process)d]:'
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u' %%(levelname)s: %%(message)s'
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161
% self.name))
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self.remove()
172
try:
173
self.add()
174
except dbus.exceptions.DBusException as error:
175
logger.critical("DBusException: %s", error)
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self.cleanup()
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os._exit(1)
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self.add()
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self.rename_count += 1
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def remove(self):
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"""Derived from the Avahi example code"""
181
if self.entry_group_state_changed_match is not None:
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self.entry_group_state_changed_match.remove()
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self.entry_group_state_changed_match = None
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167
if self.group is not None:
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self.group.Reset()
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def add(self):
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"""Derived from the Avahi example code"""
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self.remove()
189
171
if self.group is None:
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self.group = dbus.Interface(
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self.bus.get_object(avahi.DBUS_NAME,
192
174
self.server.EntryGroupNew()),
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avahi.DBUS_INTERFACE_ENTRY_GROUP)
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self.entry_group_state_changed_match = (
195
self.group.connect_to_signal(
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'StateChanged', self .entry_group_state_changed))
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logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
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self.group.connect_to_signal('StateChanged',
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self.entry_group_state_changed)
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logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
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self.name, self.type)
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self.group.AddService(
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self.interface,
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self.group.Commit()
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def entry_group_state_changed(self, state, error):
209
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"""Derived from the Avahi example code"""
210
logger.debug("Avahi entry group state change: %i", state)
191
logger.debug(u"Avahi state change: %i", state)
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if state == avahi.ENTRY_GROUP_ESTABLISHED:
213
logger.debug("Zeroconf service established.")
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logger.debug(u"Zeroconf service established.")
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elif state == avahi.ENTRY_GROUP_COLLISION:
215
logger.info("Zeroconf service name collision.")
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logger.warning(u"Zeroconf service name collision.")
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self.rename()
217
198
elif state == avahi.ENTRY_GROUP_FAILURE:
218
logger.critical("Avahi: Error in group state changed %s",
199
logger.critical(u"Avahi: Error in group state changed %s",
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200
unicode(error))
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raise AvahiGroupError("State changed: %s"
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raise AvahiGroupError(u"State changed: %s"
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202
% unicode(error))
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def cleanup(self):
223
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"""Derived from the Avahi example code"""
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if self.group is not None:
225
try:
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self.group.Free()
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except (dbus.exceptions.UnknownMethodException,
228
dbus.exceptions.DBusException) as e:
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pass
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self.group.Free()
230
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self.group = None
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self.remove()
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def server_state_changed(self, state, error=None):
208
def server_state_changed(self, state):
233
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"""Derived from the Avahi example code"""
234
logger.debug("Avahi server state change: %i", state)
235
bad_states = { avahi.SERVER_INVALID:
236
"Zeroconf server invalid",
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avahi.SERVER_REGISTERING: None,
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avahi.SERVER_COLLISION:
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"Zeroconf server name collision",
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avahi.SERVER_FAILURE:
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"Zeroconf server failure" }
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if state in bad_states:
243
if bad_states[state] is not None:
244
if error is None:
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logger.error(bad_states[state])
246
else:
247
logger.error(bad_states[state] + ": %r", error)
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self.cleanup()
210
if state == avahi.SERVER_COLLISION:
211
logger.error(u"Zeroconf server name collision")
212
self.remove()
249
213
elif state == avahi.SERVER_RUNNING:
250
214
self.add()
251
else:
252
if error is None:
253
logger.debug("Unknown state: %r", state)
254
else:
255
logger.debug("Unknown state: %r: %r", state, error)
256
215
def activate(self):
257
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"""Derived from the Avahi example code"""
258
217
if self.server is None:
259
218
self.server = dbus.Interface(
260
219
self.bus.get_object(avahi.DBUS_NAME,
261
avahi.DBUS_PATH_SERVER,
262
follow_name_owner_changes=True),
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avahi.DBUS_PATH_SERVER),
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221
avahi.DBUS_INTERFACE_SERVER)
264
self.server.connect_to_signal("StateChanged",
222
self.server.connect_to_signal(u"StateChanged",
265
223
self.server_state_changed)
266
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self.server_state_changed(self.server.GetState())
267
225
268
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def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
274
275
227
class Client(object):
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"""A representation of a client host served by this server.
277
229
278
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Attributes:
279
_approved: bool(); 'None' if not yet approved/disapproved
280
approval_delay: datetime.timedelta(); Time to wait for approval
281
approval_duration: datetime.timedelta(); Duration of one approval
231
name: string; from the config file, used in log messages and
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D-Bus identifiers
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fingerprint: string (40 or 32 hexadecimal digits); used to
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uniquely identify the client
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secret: bytestring; sent verbatim (over TLS) to client
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host: string; available for use by the checker command
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created: datetime.datetime(); (UTC) object creation
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last_enabled: datetime.datetime(); (UTC)
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enabled: bool()
240
last_checked_ok: datetime.datetime(); (UTC) or None
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timeout: datetime.timedelta(); How long from last_checked_ok
242
until this client is invalid
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interval: datetime.timedelta(); How often to start a new checker
244
disable_hook: If set, called by disable() as disable_hook(self)
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checker: subprocess.Popen(); a running checker process used
283
246
to see if the client lives.
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'None' if no process is running.
285
checker_callback_tag: a gobject event source tag, or None
286
checker_command: string; External command which is run to check
287
if client lives. %() expansions are done at
248
checker_initiator_tag: a gobject event source tag, or None
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disable_initiator_tag: - '' -
250
checker_callback_tag: - '' -
251
checker_command: string; External command which is run to check if
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client lives. %() expansions are done at
288
253
runtime with vars(self) as dict, so that for
289
254
instance %(name)s can be used in the command.
290
checker_initiator_tag: a gobject event source tag, or None
291
created: datetime.datetime(); (UTC) object creation
292
255
current_checker_command: string; current running checker_command
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disable_hook: If set, called by disable() as disable_hook(self)
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disable_initiator_tag: a gobject event source tag, or None
295
enabled: bool()
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fingerprint: string (40 or 32 hexadecimal digits); used to
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uniquely identify the client
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host: string; available for use by the checker command
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interval: datetime.timedelta(); How often to start a new checker
300
last_approval_request: datetime.datetime(); (UTC) or None
301
last_checked_ok: datetime.datetime(); (UTC) or None
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last_enabled: datetime.datetime(); (UTC)
303
name: string; from the config file, used in log messages and
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D-Bus identifiers
305
secret: bytestring; sent verbatim (over TLS) to client
306
timeout: datetime.timedelta(); How long from last_checked_ok
307
until this client is disabled
308
extended_timeout: extra long timeout when password has been sent
309
runtime_expansions: Allowed attributes for runtime expansion.
310
expires: datetime.datetime(); time (UTC) when a client will be
311
disabled, or None
312
256
"""
313
257
314
runtime_expansions = ("approval_delay", "approval_duration",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
317
"last_enabled", "name", "timeout")
258
@staticmethod
259
def _datetime_to_milliseconds(dt):
260
"Convert a datetime.datetime() to milliseconds"
261
return ((dt.days * 24 * 60 * 60 * 1000)
262
+ (dt.seconds * 1000)
263
+ (dt.microseconds // 1000))
318
264
319
265
def timeout_milliseconds(self):
320
266
"Return the 'timeout' attribute in milliseconds"
321
return _timedelta_to_milliseconds(self.timeout)
322
323
def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
325
return _timedelta_to_milliseconds(self.extended_timeout)
267
return self._datetime_to_milliseconds(self.timeout)
326
268
327
269
def interval_milliseconds(self):
328
270
"Return the 'interval' attribute in milliseconds"
329
return _timedelta_to_milliseconds(self.interval)
330
331
def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
271
return self._datetime_to_milliseconds(self.interval)
333
272
334
273
def __init__(self, name = None, disable_hook=None, config=None):
335
274
"""Note: the 'checker' key in 'config' sets the
338
277
self.name = name
339
278
if config is None:
340
279
config = {}
341
logger.debug("Creating client %r", self.name)
280
logger.debug(u"Creating client %r", self.name)
342
281
# Uppercase and remove spaces from fingerprint for later
343
282
# comparison purposes with return value from the fingerprint()
344
283
# function
345
self.fingerprint = (config["fingerprint"].upper()
346
.replace(" ", ""))
347
logger.debug(" Fingerprint: %s", self.fingerprint)
348
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
350
elif "secfile" in config:
351
with open(os.path.expanduser(os.path.expandvars
352
(config["secfile"])),
353
"rb") as secfile:
284
self.fingerprint = (config[u"fingerprint"].upper()
285
.replace(u" ", u""))
286
logger.debug(u" Fingerprint: %s", self.fingerprint)
287
if u"secret" in config:
288
self.secret = config[u"secret"].decode(u"base64")
289
elif u"secfile" in config:
290
with closing(open(os.path.expanduser
291
(os.path.expandvars
292
(config[u"secfile"])))) as secfile:
354
293
self.secret = secfile.read()
355
294
else:
356
raise TypeError("No secret or secfile for client %s"
295
raise TypeError(u"No secret or secfile for client %s"
357
296
% self.name)
358
self.host = config.get("host", "")
297
self.host = config.get(u"host", u"")
359
298
self.created = datetime.datetime.utcnow()
360
299
self.enabled = False
361
self.last_approval_request = None
362
300
self.last_enabled = None
363
301
self.last_checked_ok = None
364
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
self.interval = string_to_delta(config["interval"])
302
self.timeout = string_to_delta(config[u"timeout"])
303
self.interval = string_to_delta(config[u"interval"])
368
304
self.disable_hook = disable_hook
369
305
self.checker = None
370
306
self.checker_initiator_tag = None
371
307
self.disable_initiator_tag = None
372
self.expires = None
373
308
self.checker_callback_tag = None
374
self.checker_command = config["checker"]
309
self.checker_command = config[u"checker"]
375
310
self.current_checker_command = None
376
311
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
379
True)
380
self.approvals_pending = 0
381
self.approval_delay = string_to_delta(
382
config["approval_delay"])
383
self.approval_duration = string_to_delta(
384
config["approval_duration"])
385
self.changedstate = (multiprocessing_manager
386
.Condition(multiprocessing_manager
387
.Lock()))
388
389
def send_changedstate(self):
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
393
312
394
313
def enable(self):
395
314
"""Start this client's checker and timeout hooks"""
396
if getattr(self, "enabled", False):
315
if getattr(self, u"enabled", False):
397
316
# Already enabled
398
317
return
399
self.send_changedstate()
318
self.last_enabled = datetime.datetime.utcnow()
400
319
# Schedule a new checker to be started an 'interval' from now,
401
320
# and every interval from then on.
402
321
self.checker_initiator_tag = (gobject.timeout_add
403
322
(self.interval_milliseconds(),
404
323
self.start_checker))
324
# Also start a new checker *right now*.
325
self.start_checker()
405
326
# Schedule a disable() when 'timeout' has passed
406
self.expires = datetime.datetime.utcnow() + self.timeout
407
327
self.disable_initiator_tag = (gobject.timeout_add
408
328
(self.timeout_milliseconds(),
409
329
self.disable))
410
330
self.enabled = True
411
self.last_enabled = datetime.datetime.utcnow()
412
# Also start a new checker *right now*.
413
self.start_checker()
414
331
415
def disable(self, quiet=True):
332
def disable(self):
416
333
"""Disable this client."""
417
334
if not getattr(self, "enabled", False):
418
335
return False
419
if not quiet:
420
self.send_changedstate()
421
if not quiet:
422
logger.info("Disabling client %s", self.name)
423
if getattr(self, "disable_initiator_tag", False):
336
logger.info(u"Disabling client %s", self.name)
337
if getattr(self, u"disable_initiator_tag", False):
424
338
gobject.source_remove(self.disable_initiator_tag)
425
339
self.disable_initiator_tag = None
426
self.expires = None
427
if getattr(self, "checker_initiator_tag", False):
340
if getattr(self, u"checker_initiator_tag", False):
428
341
gobject.source_remove(self.checker_initiator_tag)
429
342
self.checker_initiator_tag = None
430
343
self.stop_checker()
445
358
if os.WIFEXITED(condition):
446
359
exitstatus = os.WEXITSTATUS(condition)
447
360
if exitstatus == 0:
448
logger.info("Checker for %(name)s succeeded",
361
logger.info(u"Checker for %(name)s succeeded",
449
362
vars(self))
450
363
self.checked_ok()
451
364
else:
452
logger.info("Checker for %(name)s failed",
365
logger.info(u"Checker for %(name)s failed",
453
366
vars(self))
454
367
else:
455
logger.warning("Checker for %(name)s crashed?",
368
logger.warning(u"Checker for %(name)s crashed?",
456
369
vars(self))
457
370
458
def checked_ok(self, timeout=None):
371
def checked_ok(self):
459
372
"""Bump up the timeout for this client.
460
373
461
374
This should only be called when the client has been seen,
462
375
alive and well.
463
376
"""
464
if timeout is None:
465
timeout = self.timeout
466
377
self.last_checked_ok = datetime.datetime.utcnow()
467
if self.disable_initiator_tag is not None:
468
gobject.source_remove(self.disable_initiator_tag)
469
if getattr(self, "enabled", False):
470
self.disable_initiator_tag = (gobject.timeout_add
471
(_timedelta_to_milliseconds
472
(timeout), self.disable))
473
self.expires = datetime.datetime.utcnow() + timeout
474
475
def need_approval(self):
476
self.last_approval_request = datetime.datetime.utcnow()
378
gobject.source_remove(self.disable_initiator_tag)
379
self.disable_initiator_tag = (gobject.timeout_add
380
(self.timeout_milliseconds(),
381
self.disable))
477
382
478
383
def start_checker(self):
479
384
"""Start a new checker subprocess if one is not running.
486
391
# client would inevitably timeout, since no checker would get
487
392
# a chance to run to completion. If we instead leave running
488
393
# checkers alone, the checker would have to take more time
489
# than 'timeout' for the client to be disabled, which is as it
490
# should be.
394
# than 'timeout' for the client to be declared invalid, which
395
# is as it should be.
491
396
492
397
# If a checker exists, make sure it is not a zombie
493
try:
398
if self.checker is not None:
494
399
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
495
except (AttributeError, OSError) as error:
496
if (isinstance(error, OSError)
497
and error.errno != errno.ECHILD):
498
raise error
499
else:
500
400
if pid:
501
logger.warning("Checker was a zombie")
401
logger.warning(u"Checker was a zombie")
502
402
gobject.source_remove(self.checker_callback_tag)
503
403
self.checker_callback(pid, status,
504
404
self.current_checker_command)
509
409
command = self.checker_command % self.host
510
410
except TypeError:
511
411
# Escape attributes for the shell
512
escaped_attrs = dict(
513
(attr,
514
re.escape(unicode(str(getattr(self, attr, "")),
515
errors=
516
'replace')))
517
for attr in
518
self.runtime_expansions)
519
412
escaped_attrs = dict((key,
413
re.escape(unicode(str(val),
414
errors=
415
u'replace')))
416
for key, val in
417
vars(self).iteritems())
520
418
try:
521
419
command = self.checker_command % escaped_attrs
522
except TypeError as error:
523
logger.error('Could not format string "%s":'
524
' %s', self.checker_command, error)
420
except TypeError, error:
421
logger.error(u'Could not format string "%s":'
422
u' %s', self.checker_command, error)
525
423
return True # Try again later
526
424
self.current_checker_command = command
527
425
try:
528
logger.info("Starting checker %r for %s",
426
logger.info(u"Starting checker %r for %s",
529
427
command, self.name)
530
428
# We don't need to redirect stdout and stderr, since
531
429
# in normal mode, that is already done by daemon(),
533
431
# always replaced by /dev/null.)
534
432
self.checker = subprocess.Popen(command,
535
433
close_fds=True,
536
shell=True, cwd="/")
434
shell=True, cwd=u"/")
537
435
self.checker_callback_tag = (gobject.child_watch_add
538
436
(self.checker.pid,
539
437
self.checker_callback,
544
442
if pid:
545
443
gobject.source_remove(self.checker_callback_tag)
546
444
self.checker_callback(pid, status, command)
547
except OSError as error:
548
logger.error("Failed to start subprocess: %s",
445
except OSError, error:
446
logger.error(u"Failed to start subprocess: %s",
549
447
error)
550
448
# Re-run this periodically if run by gobject.timeout_add
551
449
return True
555
453
if self.checker_callback_tag:
556
454
gobject.source_remove(self.checker_callback_tag)
557
455
self.checker_callback_tag = None
558
if getattr(self, "checker", None) is None:
456
if getattr(self, u"checker", None) is None:
559
457
return
560
logger.debug("Stopping checker for %(name)s", vars(self))
458
logger.debug(u"Stopping checker for %(name)s", vars(self))
561
459
try:
562
460
os.kill(self.checker.pid, signal.SIGTERM)
563
#time.sleep(0.5)
461
#os.sleep(0.5)
564
462
#if self.checker.poll() is None:
565
463
# os.kill(self.checker.pid, signal.SIGKILL)
566
except OSError as error:
464
except OSError, error:
567
465
if error.errno != errno.ESRCH: # No such process
568
466
raise
569
467
self.checker = None
570
571
572
def dbus_service_property(dbus_interface, signature="v",
573
access="readwrite", byte_arrays=False):
574
"""Decorators for marking methods of a DBusObjectWithProperties to
575
become properties on the D-Bus.
576
577
The decorated method will be called with no arguments by "Get"
578
and with one argument by "Set".
579
580
The parameters, where they are supported, are the same as
581
dbus.service.method, except there is only "signature", since the
582
type from Get() and the type sent to Set() is the same.
583
"""
584
# Encoding deeply encoded byte arrays is not supported yet by the
585
# "Set" method, so we fail early here:
586
if byte_arrays and signature != "ay":
587
raise ValueError("Byte arrays not supported for non-'ay'"
588
" signature %r" % signature)
589
def decorator(func):
590
func._dbus_is_property = True
591
func._dbus_interface = dbus_interface
592
func._dbus_signature = signature
593
func._dbus_access = access
594
func._dbus_name = func.__name__
595
if func._dbus_name.endswith("_dbus_property"):
596
func._dbus_name = func._dbus_name[:-14]
597
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
598
return func
599
return decorator
600
601
602
class DBusPropertyException(dbus.exceptions.DBusException):
603
"""A base class for D-Bus property-related exceptions
604
"""
605
def __unicode__(self):
606
return unicode(str(self))
607
608
609
class DBusPropertyAccessException(DBusPropertyException):
610
"""A property's access permissions disallows an operation.
611
"""
612
pass
613
614
615
class DBusPropertyNotFound(DBusPropertyException):
616
"""An attempt was made to access a non-existing property.
617
"""
618
pass
619
620
621
class DBusObjectWithProperties(dbus.service.Object):
622
"""A D-Bus object with properties.
623
624
Classes inheriting from this can use the dbus_service_property
625
decorator to expose methods as D-Bus properties. It exposes the
626
standard Get(), Set(), and GetAll() methods on the D-Bus.
627
"""
628
629
@staticmethod
630
def _is_dbus_property(obj):
631
return getattr(obj, "_dbus_is_property", False)
632
633
def _get_all_dbus_properties(self):
634
"""Returns a generator of (name, attribute) pairs
635
"""
636
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
637
for cls in self.__class__.__mro__
638
for name, prop in
639
inspect.getmembers(cls, self._is_dbus_property))
640
641
def _get_dbus_property(self, interface_name, property_name):
642
"""Returns a bound method if one exists which is a D-Bus
643
property with the specified name and interface.
644
"""
645
for cls in self.__class__.__mro__:
646
for name, value in (inspect.getmembers
647
(cls, self._is_dbus_property)):
648
if (value._dbus_name == property_name
649
and value._dbus_interface == interface_name):
650
return value.__get__(self)
651
652
# No such property
653
raise DBusPropertyNotFound(self.dbus_object_path + ":"
654
+ interface_name + "."
655
+ property_name)
656
657
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
658
out_signature="v")
659
def Get(self, interface_name, property_name):
660
"""Standard D-Bus property Get() method, see D-Bus standard.
661
"""
662
prop = self._get_dbus_property(interface_name, property_name)
663
if prop._dbus_access == "write":
664
raise DBusPropertyAccessException(property_name)
665
value = prop()
666
if not hasattr(value, "variant_level"):
667
return value
668
return type(value)(value, variant_level=value.variant_level+1)
669
670
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
671
def Set(self, interface_name, property_name, value):
672
"""Standard D-Bus property Set() method, see D-Bus standard.
673
"""
674
prop = self._get_dbus_property(interface_name, property_name)
675
if prop._dbus_access == "read":
676
raise DBusPropertyAccessException(property_name)
677
if prop._dbus_get_args_options["byte_arrays"]:
678
# The byte_arrays option is not supported yet on
679
# signatures other than "ay".
680
if prop._dbus_signature != "ay":
681
raise ValueError
682
value = dbus.ByteArray(''.join(unichr(byte)
683
for byte in value))
684
prop(value)
685
686
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
687
out_signature="a{sv}")
688
def GetAll(self, interface_name):
689
"""Standard D-Bus property GetAll() method, see D-Bus
690
standard.
691
692
Note: Will not include properties with access="write".
693
"""
694
all = {}
695
for name, prop in self._get_all_dbus_properties():
696
if (interface_name
697
and interface_name != prop._dbus_interface):
698
# Interface non-empty but did not match
699
continue
700
# Ignore write-only properties
701
if prop._dbus_access == "write":
702
continue
703
value = prop()
704
if not hasattr(value, "variant_level"):
705
all[name] = value
706
continue
707
all[name] = type(value)(value, variant_level=
708
value.variant_level+1)
709
return dbus.Dictionary(all, signature="sv")
710
711
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
712
out_signature="s",
713
path_keyword='object_path',
714
connection_keyword='connection')
715
def Introspect(self, object_path, connection):
716
"""Standard D-Bus method, overloaded to insert property tags.
717
"""
718
xmlstring = dbus.service.Object.Introspect(self, object_path,
719
connection)
720
try:
721
document = xml.dom.minidom.parseString(xmlstring)
722
def make_tag(document, name, prop):
723
e = document.createElement("property")
724
e.setAttribute("name", name)
725
e.setAttribute("type", prop._dbus_signature)
726
e.setAttribute("access", prop._dbus_access)
727
return e
728
for if_tag in document.getElementsByTagName("interface"):
729
for tag in (make_tag(document, name, prop)
730
for name, prop
731
in self._get_all_dbus_properties()
732
if prop._dbus_interface
733
== if_tag.getAttribute("name")):
734
if_tag.appendChild(tag)
735
# Add the names to the return values for the
736
# "org.freedesktop.DBus.Properties" methods
737
if (if_tag.getAttribute("name")
738
== "org.freedesktop.DBus.Properties"):
739
for cn in if_tag.getElementsByTagName("method"):
740
if cn.getAttribute("name") == "Get":
741
for arg in cn.getElementsByTagName("arg"):
742
if (arg.getAttribute("direction")
743
== "out"):
744
arg.setAttribute("name", "value")
745
elif cn.getAttribute("name") == "GetAll":
746
for arg in cn.getElementsByTagName("arg"):
747
if (arg.getAttribute("direction")
748
== "out"):
749
arg.setAttribute("name", "props")
750
xmlstring = document.toxml("utf-8")
751
document.unlink()
752
except (AttributeError, xml.dom.DOMException,
753
xml.parsers.expat.ExpatError) as error:
754
logger.error("Failed to override Introspection method",
755
error)
756
return xmlstring
757
758
759
def datetime_to_dbus (dt, variant_level=0):
760
"""Convert a UTC datetime.datetime() to a D-Bus type."""
761
if dt is None:
762
return dbus.String("", variant_level = variant_level)
763
return dbus.String(dt.isoformat(),
764
variant_level=variant_level)
765
766
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
767
.__metaclass__):
768
"""Applied to an empty subclass of a D-Bus object, this metaclass
769
will add additional D-Bus attributes matching a certain pattern.
770
"""
771
def __new__(mcs, name, bases, attr):
772
# Go through all the base classes which could have D-Bus
773
# methods, signals, or properties in them
774
for base in (b for b in bases
775
if issubclass(b, dbus.service.Object)):
776
# Go though all attributes of the base class
777
for attrname, attribute in inspect.getmembers(base):
778
# Ignore non-D-Bus attributes, and D-Bus attributes
779
# with the wrong interface name
780
if (not hasattr(attribute, "_dbus_interface")
781
or not attribute._dbus_interface
782
.startswith("se.recompile.Mandos")):
783
continue
784
# Create an alternate D-Bus interface name based on
785
# the current name
786
alt_interface = (attribute._dbus_interface
787
.replace("se.recompile.Mandos",
788
"se.bsnet.fukt.Mandos"))
789
# Is this a D-Bus signal?
790
if getattr(attribute, "_dbus_is_signal", False):
791
# Extract the original non-method function by
792
# black magic
793
nonmethod_func = (dict(
794
zip(attribute.func_code.co_freevars,
795
attribute.__closure__))["func"]
796
.cell_contents)
797
# Create a new, but exactly alike, function
798
# object, and decorate it to be a new D-Bus signal
799
# with the alternate D-Bus interface name
800
new_function = (dbus.service.signal
801
(alt_interface,
802
attribute._dbus_signature)
803
(types.FunctionType(
804
nonmethod_func.func_code,
805
nonmethod_func.func_globals,
806
nonmethod_func.func_name,
807
nonmethod_func.func_defaults,
808
nonmethod_func.func_closure)))
809
# Define a creator of a function to call both the
810
# old and new functions, so both the old and new
811
# signals gets sent when the function is called
812
def fixscope(func1, func2):
813
"""This function is a scope container to pass
814
func1 and func2 to the "call_both" function
815
outside of its arguments"""
816
def call_both(*args, **kwargs):
817
"""This function will emit two D-Bus
818
signals by calling func1 and func2"""
819
func1(*args, **kwargs)
820
func2(*args, **kwargs)
821
return call_both
822
# Create the "call_both" function and add it to
823
# the class
824
attr[attrname] = fixscope(attribute,
825
new_function)
826
# Is this a D-Bus method?
827
elif getattr(attribute, "_dbus_is_method", False):
828
# Create a new, but exactly alike, function
829
# object. Decorate it to be a new D-Bus method
830
# with the alternate D-Bus interface name. Add it
831
# to the class.
832
attr[attrname] = (dbus.service.method
833
(alt_interface,
834
attribute._dbus_in_signature,
835
attribute._dbus_out_signature)
836
(types.FunctionType
837
(attribute.func_code,
838
attribute.func_globals,
839
attribute.func_name,
840
attribute.func_defaults,
841
attribute.func_closure)))
842
# Is this a D-Bus property?
843
elif getattr(attribute, "_dbus_is_property", False):
844
# Create a new, but exactly alike, function
845
# object, and decorate it to be a new D-Bus
846
# property with the alternate D-Bus interface
847
# name. Add it to the class.
848
attr[attrname] = (dbus_service_property
849
(alt_interface,
850
attribute._dbus_signature,
851
attribute._dbus_access,
852
attribute
853
._dbus_get_args_options
854
["byte_arrays"])
855
(types.FunctionType
856
(attribute.func_code,
857
attribute.func_globals,
858
attribute.func_name,
859
attribute.func_defaults,
860
attribute.func_closure)))
861
return type.__new__(mcs, name, bases, attr)
862
863
class ClientDBus(Client, DBusObjectWithProperties):
468
469
def still_valid(self):
470
"""Has the timeout not yet passed for this client?"""
471
if not getattr(self, u"enabled", False):
472
return False
473
now = datetime.datetime.utcnow()
474
if self.last_checked_ok is None:
475
return now < (self.created + self.timeout)
476
else:
477
return now < (self.last_checked_ok + self.timeout)
478
479
480
class ClientDBus(Client, dbus.service.Object):
864
481
"""A Client class using D-Bus
865
482
866
483
Attributes:
867
484
dbus_object_path: dbus.ObjectPath
868
485
bus: dbus.SystemBus()
869
486
"""
870
871
runtime_expansions = (Client.runtime_expansions
872
+ ("dbus_object_path",))
873
874
487
# dbus.service.Object doesn't use super(), so we can't either.
875
488
876
489
def __init__(self, bus = None, *args, **kwargs):
877
self._approvals_pending = 0
878
490
self.bus = bus
879
491
Client.__init__(self, *args, **kwargs)
880
492
# Only now, when this client is initialized, can it show up on
881
493
# the D-Bus
882
client_object_name = unicode(self.name).translate(
883
{ord("."): ord("_"),
884
ord("-"): ord("_")})
885
494
self.dbus_object_path = (dbus.ObjectPath
886
("/clients/" + client_object_name))
887
DBusObjectWithProperties.__init__(self, self.bus,
888
self.dbus_object_path)
889
890
def notifychangeproperty(transform_func,
891
dbus_name, type_func=lambda x: x,
892
variant_level=1):
893
""" Modify a variable so that it's a property which announces
894
its changes to DBus.
895
896
transform_fun: Function that takes a value and a variant_level
897
and transforms it to a D-Bus type.
898
dbus_name: D-Bus name of the variable
899
type_func: Function that transform the value before sending it
900
to the D-Bus. Default: no transform
901
variant_level: D-Bus variant level. Default: 1
902
"""
903
attrname = "_{0}".format(dbus_name)
904
def setter(self, value):
905
if hasattr(self, "dbus_object_path"):
906
if (not hasattr(self, attrname) or
907
type_func(getattr(self, attrname, None))
908
!= type_func(value)):
909
dbus_value = transform_func(type_func(value),
910
variant_level
911
=variant_level)
912
self.PropertyChanged(dbus.String(dbus_name),
913
dbus_value)
914
setattr(self, attrname, value)
915
916
return property(lambda self: getattr(self, attrname), setter)
917
918
919
expires = notifychangeproperty(datetime_to_dbus, "Expires")
920
approvals_pending = notifychangeproperty(dbus.Boolean,
921
"ApprovalPending",
922
type_func = bool)
923
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
924
last_enabled = notifychangeproperty(datetime_to_dbus,
925
"LastEnabled")
926
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
927
type_func = lambda checker:
928
checker is not None)
929
last_checked_ok = notifychangeproperty(datetime_to_dbus,
930
"LastCheckedOK")
931
last_approval_request = notifychangeproperty(
932
datetime_to_dbus, "LastApprovalRequest")
933
approved_by_default = notifychangeproperty(dbus.Boolean,
934
"ApprovedByDefault")
935
approval_delay = notifychangeproperty(dbus.UInt16,
936
"ApprovalDelay",
937
type_func =
938
_timedelta_to_milliseconds)
939
approval_duration = notifychangeproperty(
940
dbus.UInt16, "ApprovalDuration",
941
type_func = _timedelta_to_milliseconds)
942
host = notifychangeproperty(dbus.String, "Host")
943
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
944
type_func =
945
_timedelta_to_milliseconds)
946
extended_timeout = notifychangeproperty(
947
dbus.UInt16, "ExtendedTimeout",
948
type_func = _timedelta_to_milliseconds)
949
interval = notifychangeproperty(dbus.UInt16,
950
"Interval",
951
type_func =
952
_timedelta_to_milliseconds)
953
checker_command = notifychangeproperty(dbus.String, "Checker")
954
955
del notifychangeproperty
495
(u"/clients/"
496
+ self.name.replace(u".", u"_")))
497
dbus.service.Object.__init__(self, self.bus,
498
self.dbus_object_path)
499
500
@staticmethod
501
def _datetime_to_dbus(dt, variant_level=0):
502
"""Convert a UTC datetime.datetime() to a D-Bus type."""
503
return dbus.String(dt.isoformat(),
504
variant_level=variant_level)
505
506
def enable(self):
507
oldstate = getattr(self, u"enabled", False)
508
r = Client.enable(self)
509
if oldstate != self.enabled:
510
# Emit D-Bus signals
511
self.PropertyChanged(dbus.String(u"enabled"),
512
dbus.Boolean(True, variant_level=1))
513
self.PropertyChanged(
514
dbus.String(u"last_enabled"),
515
self._datetime_to_dbus(self.last_enabled,
516
variant_level=1))
517
return r
518
519
def disable(self, signal = True):
520
oldstate = getattr(self, u"enabled", False)
521
r = Client.disable(self)
522
if signal and oldstate != self.enabled:
523
# Emit D-Bus signal
524
self.PropertyChanged(dbus.String(u"enabled"),
525
dbus.Boolean(False, variant_level=1))
526
return r
956
527
957
528
def __del__(self, *args, **kwargs):
958
529
try:
959
530
self.remove_from_connection()
960
531
except LookupError:
961
532
pass
962
if hasattr(DBusObjectWithProperties, "__del__"):
963
DBusObjectWithProperties.__del__(self, *args, **kwargs)
533
if hasattr(dbus.service.Object, u"__del__"):
534
dbus.service.Object.__del__(self, *args, **kwargs)
964
535
Client.__del__(self, *args, **kwargs)
965
536
966
537
def checker_callback(self, pid, condition, command,
967
538
*args, **kwargs):
968
539
self.checker_callback_tag = None
969
540
self.checker = None
541
# Emit D-Bus signal
542
self.PropertyChanged(dbus.String(u"checker_running"),
543
dbus.Boolean(False, variant_level=1))
970
544
if os.WIFEXITED(condition):
971
545
exitstatus = os.WEXITSTATUS(condition)
972
546
# Emit D-Bus signal
982
556
return Client.checker_callback(self, pid, condition, command,
983
557
*args, **kwargs)
984
558
559
def checked_ok(self, *args, **kwargs):
560
r = Client.checked_ok(self, *args, **kwargs)
561
# Emit D-Bus signal
562
self.PropertyChanged(
563
dbus.String(u"last_checked_ok"),
564
(self._datetime_to_dbus(self.last_checked_ok,
565
variant_level=1)))
566
return r
567
985
568
def start_checker(self, *args, **kwargs):
986
569
old_checker = self.checker
987
570
if self.checker is not None:
994
577
and old_checker_pid != self.checker.pid):
995
578
# Emit D-Bus signal
996
579
self.CheckerStarted(self.current_checker_command)
997
return r
998
999
def _reset_approved(self):
1000
self._approved = None
1001
return False
1002
1003
def approve(self, value=True):
1004
self.send_changedstate()
1005
self._approved = value
1006
gobject.timeout_add(_timedelta_to_milliseconds
1007
(self.approval_duration),
1008
self._reset_approved)
1009
1010
1011
## D-Bus methods, signals & properties
1012
_interface = "se.recompile.Mandos.Client"
1013
1014
## Signals
580
self.PropertyChanged(
581
dbus.String(u"checker_running"),
582
dbus.Boolean(True, variant_level=1))
583
return r
584
585
def stop_checker(self, *args, **kwargs):
586
old_checker = getattr(self, u"checker", None)
587
r = Client.stop_checker(self, *args, **kwargs)
588
if (old_checker is not None
589
and getattr(self, u"checker", None) is None):
590
self.PropertyChanged(dbus.String(u"checker_running"),
591
dbus.Boolean(False, variant_level=1))
592
return r
593
594
## D-Bus methods & signals
595
_interface = u"se.bsnet.fukt.Mandos.Client"
596
597
# CheckedOK - method
598
@dbus.service.method(_interface)
599
def CheckedOK(self):
600
return self.checked_ok()
1015
601
1016
602
# CheckerCompleted - signal
1017
@dbus.service.signal(_interface, signature="nxs")
603
@dbus.service.signal(_interface, signature=u"nxs")
1018
604
def CheckerCompleted(self, exitcode, waitstatus, command):
1019
605
"D-Bus signal"
1020
606
pass
1021
607
1022
608
# CheckerStarted - signal
1023
@dbus.service.signal(_interface, signature="s")
609
@dbus.service.signal(_interface, signature=u"s")
1024
610
def CheckerStarted(self, command):
1025
611
"D-Bus signal"
1026
612
pass
1027
613
614
# GetAllProperties - method
615
@dbus.service.method(_interface, out_signature=u"a{sv}")
616
def GetAllProperties(self):
617
"D-Bus method"
618
return dbus.Dictionary({
619
dbus.String(u"name"):
620
dbus.String(self.name, variant_level=1),
621
dbus.String(u"fingerprint"):
622
dbus.String(self.fingerprint, variant_level=1),
623
dbus.String(u"host"):
624
dbus.String(self.host, variant_level=1),
625
dbus.String(u"created"):
626
self._datetime_to_dbus(self.created,
627
variant_level=1),
628
dbus.String(u"last_enabled"):
629
(self._datetime_to_dbus(self.last_enabled,
630
variant_level=1)
631
if self.last_enabled is not None
632
else dbus.Boolean(False, variant_level=1)),
633
dbus.String(u"enabled"):
634
dbus.Boolean(self.enabled, variant_level=1),
635
dbus.String(u"last_checked_ok"):
636
(self._datetime_to_dbus(self.last_checked_ok,
637
variant_level=1)
638
if self.last_checked_ok is not None
639
else dbus.Boolean (False, variant_level=1)),
640
dbus.String(u"timeout"):
641
dbus.UInt64(self.timeout_milliseconds(),
642
variant_level=1),
643
dbus.String(u"interval"):
644
dbus.UInt64(self.interval_milliseconds(),
645
variant_level=1),
646
dbus.String(u"checker"):
647
dbus.String(self.checker_command,
648
variant_level=1),
649
dbus.String(u"checker_running"):
650
dbus.Boolean(self.checker is not None,
651
variant_level=1),
652
dbus.String(u"object_path"):
653
dbus.ObjectPath(self.dbus_object_path,
654
variant_level=1)
655
}, signature=u"sv")
656
657
# IsStillValid - method
658
@dbus.service.method(_interface, out_signature=u"b")
659
def IsStillValid(self):
660
return self.still_valid()
661
1028
662
# PropertyChanged - signal
1029
@dbus.service.signal(_interface, signature="sv")
663
@dbus.service.signal(_interface, signature=u"sv")
1030
664
def PropertyChanged(self, property, value):
1031
665
"D-Bus signal"
1032
666
pass
1033
667
1034
# GotSecret - signal
668
# ReceivedSecret - signal
1035
669
@dbus.service.signal(_interface)
1036
def GotSecret(self):
1037
"""D-Bus signal
1038
Is sent after a successful transfer of secret from the Mandos
1039
server to mandos-client
1040
"""
670
def ReceivedSecret(self):
671
"D-Bus signal"
1041
672
pass
1042
673
1043
674
# Rejected - signal
1044
@dbus.service.signal(_interface, signature="s")
1045
def Rejected(self, reason):
675
@dbus.service.signal(_interface)
676
def Rejected(self):
1046
677
"D-Bus signal"
1047
678
pass
1048
679
1049
# NeedApproval - signal
1050
@dbus.service.signal(_interface, signature="tb")
1051
def NeedApproval(self, timeout, default):
1052
"D-Bus signal"
1053
return self.need_approval()
1054
1055
## Methods
1056
1057
# Approve - method
1058
@dbus.service.method(_interface, in_signature="b")
1059
def Approve(self, value):
1060
self.approve(value)
1061
1062
# CheckedOK - method
1063
@dbus.service.method(_interface)
1064
def CheckedOK(self):
1065
self.checked_ok()
680
# SetChecker - method
681
@dbus.service.method(_interface, in_signature=u"s")
682
def SetChecker(self, checker):
683
"D-Bus setter method"
684
self.checker_command = checker
685
# Emit D-Bus signal
686
self.PropertyChanged(dbus.String(u"checker"),
687
dbus.String(self.checker_command,
688
variant_level=1))
689
690
# SetHost - method
691
@dbus.service.method(_interface, in_signature=u"s")
692
def SetHost(self, host):
693
"D-Bus setter method"
694
self.host = host
695
# Emit D-Bus signal
696
self.PropertyChanged(dbus.String(u"host"),
697
dbus.String(self.host, variant_level=1))
698
699
# SetInterval - method
700
@dbus.service.method(_interface, in_signature=u"t")
701
def SetInterval(self, milliseconds):
702
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
703
# Emit D-Bus signal
704
self.PropertyChanged(dbus.String(u"interval"),
705
(dbus.UInt64(self.interval_milliseconds(),
706
variant_level=1)))
707
708
# SetSecret - method
709
@dbus.service.method(_interface, in_signature=u"ay",
710
byte_arrays=True)
711
def SetSecret(self, secret):
712
"D-Bus setter method"
713
self.secret = str(secret)
714
715
# SetTimeout - method
716
@dbus.service.method(_interface, in_signature=u"t")
717
def SetTimeout(self, milliseconds):
718
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
719
# Emit D-Bus signal
720
self.PropertyChanged(dbus.String(u"timeout"),
721
(dbus.UInt64(self.timeout_milliseconds(),
722
variant_level=1)))
1066
723
1067
724
# Enable - method
1068
725
@dbus.service.method(_interface)
1087
744
def StopChecker(self):
1088
745
self.stop_checker()
1089
746
1090
## Properties
1091
1092
# ApprovalPending - property
1093
@dbus_service_property(_interface, signature="b", access="read")
1094
def ApprovalPending_dbus_property(self):
1095
return dbus.Boolean(bool(self.approvals_pending))
1096
1097
# ApprovedByDefault - property
1098
@dbus_service_property(_interface, signature="b",
1099
access="readwrite")
1100
def ApprovedByDefault_dbus_property(self, value=None):
1101
if value is None: # get
1102
return dbus.Boolean(self.approved_by_default)
1103
self.approved_by_default = bool(value)
1104
1105
# ApprovalDelay - property
1106
@dbus_service_property(_interface, signature="t",
1107
access="readwrite")
1108
def ApprovalDelay_dbus_property(self, value=None):
1109
if value is None: # get
1110
return dbus.UInt64(self.approval_delay_milliseconds())
1111
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1112
1113
# ApprovalDuration - property
1114
@dbus_service_property(_interface, signature="t",
1115
access="readwrite")
1116
def ApprovalDuration_dbus_property(self, value=None):
1117
if value is None: # get
1118
return dbus.UInt64(_timedelta_to_milliseconds(
1119
self.approval_duration))
1120
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1121
1122
# Name - property
1123
@dbus_service_property(_interface, signature="s", access="read")
1124
def Name_dbus_property(self):
1125
return dbus.String(self.name)
1126
1127
# Fingerprint - property
1128
@dbus_service_property(_interface, signature="s", access="read")
1129
def Fingerprint_dbus_property(self):
1130
return dbus.String(self.fingerprint)
1131
1132
# Host - property
1133
@dbus_service_property(_interface, signature="s",
1134
access="readwrite")
1135
def Host_dbus_property(self, value=None):
1136
if value is None: # get
1137
return dbus.String(self.host)
1138
self.host = value
1139
1140
# Created - property
1141
@dbus_service_property(_interface, signature="s", access="read")
1142
def Created_dbus_property(self):
1143
return dbus.String(datetime_to_dbus(self.created))
1144
1145
# LastEnabled - property
1146
@dbus_service_property(_interface, signature="s", access="read")
1147
def LastEnabled_dbus_property(self):
1148
return datetime_to_dbus(self.last_enabled)
1149
1150
# Enabled - property
1151
@dbus_service_property(_interface, signature="b",
1152
access="readwrite")
1153
def Enabled_dbus_property(self, value=None):
1154
if value is None: # get
1155
return dbus.Boolean(self.enabled)
1156
if value:
1157
self.enable()
1158
else:
1159
self.disable()
1160
1161
# LastCheckedOK - property
1162
@dbus_service_property(_interface, signature="s",
1163
access="readwrite")
1164
def LastCheckedOK_dbus_property(self, value=None):
1165
if value is not None:
1166
self.checked_ok()
1167
return
1168
return datetime_to_dbus(self.last_checked_ok)
1169
1170
# Expires - property
1171
@dbus_service_property(_interface, signature="s", access="read")
1172
def Expires_dbus_property(self):
1173
return datetime_to_dbus(self.expires)
1174
1175
# LastApprovalRequest - property
1176
@dbus_service_property(_interface, signature="s", access="read")
1177
def LastApprovalRequest_dbus_property(self):
1178
return datetime_to_dbus(self.last_approval_request)
1179
1180
# Timeout - property
1181
@dbus_service_property(_interface, signature="t",
1182
access="readwrite")
1183
def Timeout_dbus_property(self, value=None):
1184
if value is None: # get
1185
return dbus.UInt64(self.timeout_milliseconds())
1186
self.timeout = datetime.timedelta(0, 0, 0, value)
1187
if getattr(self, "disable_initiator_tag", None) is None:
1188
return
1189
# Reschedule timeout
1190
gobject.source_remove(self.disable_initiator_tag)
1191
self.disable_initiator_tag = None
1192
self.expires = None
1193
time_to_die = _timedelta_to_milliseconds((self
1194
.last_checked_ok
1195
+ self.timeout)
1196
- datetime.datetime
1197
.utcnow())
1198
if time_to_die <= 0:
1199
# The timeout has passed
1200
self.disable()
1201
else:
1202
self.expires = (datetime.datetime.utcnow()
1203
+ datetime.timedelta(milliseconds =
1204
time_to_die))
1205
self.disable_initiator_tag = (gobject.timeout_add
1206
(time_to_die, self.disable))
1207
1208
# ExtendedTimeout - property
1209
@dbus_service_property(_interface, signature="t",
1210
access="readwrite")
1211
def ExtendedTimeout_dbus_property(self, value=None):
1212
if value is None: # get
1213
return dbus.UInt64(self.extended_timeout_milliseconds())
1214
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1215
1216
# Interval - property
1217
@dbus_service_property(_interface, signature="t",
1218
access="readwrite")
1219
def Interval_dbus_property(self, value=None):
1220
if value is None: # get
1221
return dbus.UInt64(self.interval_milliseconds())
1222
self.interval = datetime.timedelta(0, 0, 0, value)
1223
if getattr(self, "checker_initiator_tag", None) is None:
1224
return
1225
# Reschedule checker run
1226
gobject.source_remove(self.checker_initiator_tag)
1227
self.checker_initiator_tag = (gobject.timeout_add
1228
(value, self.start_checker))
1229
self.start_checker() # Start one now, too
1230
1231
# Checker - property
1232
@dbus_service_property(_interface, signature="s",
1233
access="readwrite")
1234
def Checker_dbus_property(self, value=None):
1235
if value is None: # get
1236
return dbus.String(self.checker_command)
1237
self.checker_command = value
1238
1239
# CheckerRunning - property
1240
@dbus_service_property(_interface, signature="b",
1241
access="readwrite")
1242
def CheckerRunning_dbus_property(self, value=None):
1243
if value is None: # get
1244
return dbus.Boolean(self.checker is not None)
1245
if value:
1246
self.start_checker()
1247
else:
1248
self.stop_checker()
1249
1250
# ObjectPath - property
1251
@dbus_service_property(_interface, signature="o", access="read")
1252
def ObjectPath_dbus_property(self):
1253
return self.dbus_object_path # is already a dbus.ObjectPath
1254
1255
# Secret = property
1256
@dbus_service_property(_interface, signature="ay",
1257
access="write", byte_arrays=True)
1258
def Secret_dbus_property(self, value):
1259
self.secret = str(value)
1260
1261
747
del _interface
1262
748
1263
749
1264
class ProxyClient(object):
1265
def __init__(self, child_pipe, fpr, address):
1266
self._pipe = child_pipe
1267
self._pipe.send(('init', fpr, address))
1268
if not self._pipe.recv():
1269
raise KeyError()
1270
1271
def __getattribute__(self, name):
1272
if(name == '_pipe'):
1273
return super(ProxyClient, self).__getattribute__(name)
1274
self._pipe.send(('getattr', name))
1275
data = self._pipe.recv()
1276
if data[0] == 'data':
1277
return data[1]
1278
if data[0] == 'function':
1279
def func(*args, **kwargs):
1280
self._pipe.send(('funcall', name, args, kwargs))
1281
return self._pipe.recv()[1]
1282
return func
1283
1284
def __setattr__(self, name, value):
1285
if(name == '_pipe'):
1286
return super(ProxyClient, self).__setattr__(name, value)
1287
self._pipe.send(('setattr', name, value))
1288
1289
class ClientDBusTransitional(ClientDBus):
1290
__metaclass__ = AlternateDBusNamesMetaclass
1291
1292
750
class ClientHandler(socketserver.BaseRequestHandler, object):
1293
751
"""A class to handle client connections.
1294
752
1296
754
Note: This will run in its own forked process."""
1297
755
1298
756
def handle(self):
1299
with contextlib.closing(self.server.child_pipe) as child_pipe:
1300
logger.info("TCP connection from: %s",
1301
unicode(self.client_address))
1302
logger.debug("Pipe FD: %d",
1303
self.server.child_pipe.fileno())
1304
757
logger.info(u"TCP connection from: %s",
758
unicode(self.client_address))
759
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
760
# Open IPC pipe to parent process
761
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1305
762
session = (gnutls.connection
1306
763
.ClientSession(self.request,
1307
764
gnutls.connection
1308
765
.X509Credentials()))
1309
766
767
line = self.request.makefile().readline()
768
logger.debug(u"Protocol version: %r", line)
769
try:
770
if int(line.strip().split()[0]) > 1:
771
raise RuntimeError
772
except (ValueError, IndexError, RuntimeError), error:
773
logger.error(u"Unknown protocol version: %s", error)
774
return
775
1310
776
# Note: gnutls.connection.X509Credentials is really a
1311
777
# generic GnuTLS certificate credentials object so long as
1312
778
# no X.509 keys are added to it. Therefore, we can use it
1313
779
# here despite using OpenPGP certificates.
1314
780
1315
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1316
# "+AES-256-CBC", "+SHA1",
1317
# "+COMP-NULL", "+CTYPE-OPENPGP",
1318
# "+DHE-DSS"))
781
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
782
# u"+AES-256-CBC", u"+SHA1",
783
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
784
# u"+DHE-DSS"))
1319
785
# Use a fallback default, since this MUST be set.
1320
786
priority = self.server.gnutls_priority
1321
787
if priority is None:
1322
priority = "NORMAL"
788
priority = u"NORMAL"
1323
789
(gnutls.library.functions
1324
790
.gnutls_priority_set_direct(session._c_object,
1325
791
priority, None))
1326
792
1327
# Start communication using the Mandos protocol
1328
# Get protocol number
1329
line = self.request.makefile().readline()
1330
logger.debug("Protocol version: %r", line)
1331
try:
1332
if int(line.strip().split()[0]) > 1:
1333
raise RuntimeError
1334
except (ValueError, IndexError, RuntimeError) as error:
1335
logger.error("Unknown protocol version: %s", error)
1336
return
1337
1338
# Start GnuTLS connection
1339
793
try:
1340
794
session.handshake()
1341
except gnutls.errors.GNUTLSError as error:
1342
logger.warning("Handshake failed: %s", error)
795
except gnutls.errors.GNUTLSError, error:
796
logger.warning(u"Handshake failed: %s", error)
1343
797
# Do not run session.bye() here: the session is not
1344
798
# established. Just abandon the request.
1345
799
return
1346
logger.debug("Handshake succeeded")
1347
1348
approval_required = False
800
logger.debug(u"Handshake succeeded")
1349
801
try:
1350
try:
1351
fpr = self.fingerprint(self.peer_certificate
1352
(session))
1353
except (TypeError,
1354
gnutls.errors.GNUTLSError) as error:
1355
logger.warning("Bad certificate: %s", error)
1356
return
1357
logger.debug("Fingerprint: %s", fpr)
1358
1359
try:
1360
client = ProxyClient(child_pipe, fpr,
1361
self.client_address)
1362
except KeyError:
1363
return
1364
1365
if client.approval_delay:
1366
delay = client.approval_delay
1367
client.approvals_pending += 1
1368
approval_required = True
1369
1370
while True:
1371
if not client.enabled:
1372
logger.info("Client %s is disabled",
1373
client.name)
1374
if self.server.use_dbus:
1375
# Emit D-Bus signal
1376
client.Rejected("Disabled")
1377
return
1378
1379
if client._approved or not client.approval_delay:
1380
#We are approved or approval is disabled
1381
break
1382
elif client._approved is None:
1383
logger.info("Client %s needs approval",
1384
client.name)
1385
if self.server.use_dbus:
1386
# Emit D-Bus signal
1387
client.NeedApproval(
1388
client.approval_delay_milliseconds(),
1389
client.approved_by_default)
1390
else:
1391
logger.warning("Client %s was not approved",
1392
client.name)
1393
if self.server.use_dbus:
1394
# Emit D-Bus signal
1395
client.Rejected("Denied")
1396
return
1397
1398
#wait until timeout or approved
1399
time = datetime.datetime.now()
1400
client.changedstate.acquire()
1401
(client.changedstate.wait
1402
(float(client._timedelta_to_milliseconds(delay)
1403
/ 1000)))
1404
client.changedstate.release()
1405
time2 = datetime.datetime.now()
1406
if (time2 - time) >= delay:
1407
if not client.approved_by_default:
1408
logger.warning("Client %s timed out while"
1409
" waiting for approval",
1410
client.name)
1411
if self.server.use_dbus:
1412
# Emit D-Bus signal
1413
client.Rejected("Approval timed out")
1414
return
1415
else:
1416
break
1417
else:
1418
delay -= time2 - time
1419
1420
sent_size = 0
1421
while sent_size < len(client.secret):
1422
try:
1423
sent = session.send(client.secret[sent_size:])
1424
except gnutls.errors.GNUTLSError as error:
1425
logger.warning("gnutls send failed")
1426
return
1427
logger.debug("Sent: %d, remaining: %d",
1428
sent, len(client.secret)
1429
- (sent_size + sent))
1430
sent_size += sent
1431
1432
logger.info("Sending secret to %s", client.name)
1433
# bump the timeout using extended_timeout
1434
client.checked_ok(client.extended_timeout)
1435
if self.server.use_dbus:
1436
# Emit D-Bus signal
1437
client.GotSecret()
802
fpr = self.fingerprint(self.peer_certificate(session))
803
except (TypeError, gnutls.errors.GNUTLSError), error:
804
logger.warning(u"Bad certificate: %s", error)
805
session.bye()
806
return
807
logger.debug(u"Fingerprint: %s", fpr)
1438
808
1439
finally:
1440
if approval_required:
1441
client.approvals_pending -= 1
1442
try:
1443
session.bye()
1444
except gnutls.errors.GNUTLSError as error:
1445
logger.warning("GnuTLS bye failed")
809
for c in self.server.clients:
810
if c.fingerprint == fpr:
811
client = c
812
break
813
else:
814
ipc.write(u"NOTFOUND %s %s\n"
815
% (fpr, unicode(self.client_address)))
816
session.bye()
817
return
818
# Have to check if client.still_valid(), since it is
819
# possible that the client timed out while establishing
820
# the GnuTLS session.
821
if not client.still_valid():
822
ipc.write(u"INVALID %s\n" % client.name)
823
session.bye()
824
return
825
ipc.write(u"SENDING %s\n" % client.name)
826
sent_size = 0
827
while sent_size < len(client.secret):
828
sent = session.send(client.secret[sent_size:])
829
logger.debug(u"Sent: %d, remaining: %d",
830
sent, len(client.secret)
831
- (sent_size + sent))
832
sent_size += sent
833
session.bye()
1446
834
1447
835
@staticmethod
1448
836
def peer_certificate(session):
1458
846
.gnutls_certificate_get_peers
1459
847
(session._c_object, ctypes.byref(list_size)))
1460
848
if not bool(cert_list) and list_size.value != 0:
1461
raise gnutls.errors.GNUTLSError("error getting peer"
1462
" certificate")
849
raise gnutls.errors.GNUTLSError(u"error getting peer"
850
u" certificate")
1463
851
if list_size.value == 0:
1464
852
return None
1465
853
cert = cert_list[0]
1491
879
if crtverify.value != 0:
1492
880
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1493
881
raise (gnutls.errors.CertificateSecurityError
1494
("Verify failed"))
882
(u"Verify failed"))
1495
883
# New buffer for the fingerprint
1496
884
buf = ctypes.create_string_buffer(20)
1497
885
buf_len = ctypes.c_size_t()
1504
892
# Convert the buffer to a Python bytestring
1505
893
fpr = ctypes.string_at(buf, buf_len.value)
1506
894
# Convert the bytestring to hexadecimal notation
1507
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
895
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1508
896
return hex_fpr
1509
897
1510
898
1511
class MultiprocessingMixIn(object):
1512
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1513
def sub_process_main(self, request, address):
1514
try:
1515
self.finish_request(request, address)
1516
except:
1517
self.handle_error(request, address)
1518
self.close_request(request)
1519
1520
def process_request(self, request, address):
1521
"""Start a new process to process the request."""
1522
proc = multiprocessing.Process(target = self.sub_process_main,
1523
args = (request,
1524
address))
1525
proc.start()
1526
return proc
1527
1528
1529
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1530
""" adds a pipe to the MixIn """
899
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
900
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1531
901
def process_request(self, request, client_address):
1532
902
"""Overrides and wraps the original process_request().
1533
903
1534
904
This function creates a new pipe in self.pipe
1535
905
"""
1536
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1537
1538
proc = MultiprocessingMixIn.process_request(self, request,
1539
client_address)
1540
self.child_pipe.close()
1541
self.add_pipe(parent_pipe, proc)
1542
1543
def add_pipe(self, parent_pipe, proc):
906
self.pipe = os.pipe()
907
super(ForkingMixInWithPipe,
908
self).process_request(request, client_address)
909
os.close(self.pipe[1]) # close write end
910
self.add_pipe(self.pipe[0])
911
def add_pipe(self, pipe):
1544
912
"""Dummy function; override as necessary"""
1545
raise NotImplementedError
1546
1547
1548
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
913
os.close(pipe)
914
915
916
class IPv6_TCPServer(ForkingMixInWithPipe,
1549
917
socketserver.TCPServer, object):
1550
918
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1551
919
1567
935
bind to an address or port if they were not specified."""
1568
936
if self.interface is not None:
1569
937
if SO_BINDTODEVICE is None:
1570
logger.error("SO_BINDTODEVICE does not exist;"
1571
" cannot bind to interface %s",
938
logger.error(u"SO_BINDTODEVICE does not exist;"
939
u" cannot bind to interface %s",
1572
940
self.interface)
1573
941
else:
1574
942
try:
1575
943
self.socket.setsockopt(socket.SOL_SOCKET,
1576
944
SO_BINDTODEVICE,
1577
945
str(self.interface
1578
+ '\0'))
1579
except socket.error as error:
946
+ u'\0'))
947
except socket.error, error:
1580
948
if error[0] == errno.EPERM:
1581
logger.error("No permission to"
1582
" bind to interface %s",
949
logger.error(u"No permission to"
950
u" bind to interface %s",
1583
951
self.interface)
1584
952
elif error[0] == errno.ENOPROTOOPT:
1585
logger.error("SO_BINDTODEVICE not available;"
1586
" cannot bind to interface %s",
953
logger.error(u"SO_BINDTODEVICE not available;"
954
u" cannot bind to interface %s",
1587
955
self.interface)
1588
956
else:
1589
957
raise
1591
959
if self.server_address[0] or self.server_address[1]:
1592
960
if not self.server_address[0]:
1593
961
if self.address_family == socket.AF_INET6:
1594
any_address = "::" # in6addr_any
962
any_address = u"::" # in6addr_any
1595
963
else:
1596
964
any_address = socket.INADDR_ANY
1597
965
self.server_address = (any_address,
1615
983
clients: set of Client objects
1616
984
gnutls_priority GnuTLS priority string
1617
985
use_dbus: Boolean; to emit D-Bus signals or not
986
clients: set of Client objects
987
gnutls_priority GnuTLS priority string
988
use_dbus: Boolean; to emit D-Bus signals or not
1618
989
1619
990
Assumes a gobject.MainLoop event loop.
1620
991
"""
1634
1005
def server_activate(self):
1635
1006
if self.enabled:
1636
1007
return socketserver.TCPServer.server_activate(self)
1637
1638
1008
def enable(self):
1639
1009
self.enabled = True
1640
1641
def add_pipe(self, parent_pipe, proc):
1010
def add_pipe(self, pipe):
1642
1011
# Call "handle_ipc" for both data and EOF events
1643
gobject.io_add_watch(parent_pipe.fileno(),
1644
gobject.IO_IN | gobject.IO_HUP,
1645
functools.partial(self.handle_ipc,
1646
parent_pipe =
1647
parent_pipe,
1648
proc = proc))
1649
1650
def handle_ipc(self, source, condition, parent_pipe=None,
1651
proc = None, client_object=None):
1012
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1013
self.handle_ipc)
1014
def handle_ipc(self, source, condition, file_objects={}):
1652
1015
condition_names = {
1653
gobject.IO_IN: "IN", # There is data to read.
1654
gobject.IO_OUT: "OUT", # Data can be written (without
1016
gobject.IO_IN: u"IN", # There is data to read.
1017
gobject.IO_OUT: u"OUT", # Data can be written (without
1655
1018
# blocking).
1656
gobject.IO_PRI: "PRI", # There is urgent data to read.
1657
gobject.IO_ERR: "ERR", # Error condition.
1658
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1019
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1020
gobject.IO_ERR: u"ERR", # Error condition.
1021
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1659
1022
# broken, usually for pipes and
1660
1023
# sockets).
1661
1024
}
1663
1026
for cond, name in
1664
1027
condition_names.iteritems()
1665
1028
if cond & condition)
1666
# error, or the other end of multiprocessing.Pipe has closed
1667
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1668
# Wait for other process to exit
1669
proc.join()
1670
return False
1671
1672
# Read a request from the child
1673
request = parent_pipe.recv()
1674
command = request[0]
1675
1676
if command == 'init':
1677
fpr = request[1]
1678
address = request[2]
1679
1680
for c in self.clients:
1681
if c.fingerprint == fpr:
1682
client = c
1683
break
1684
else:
1685
logger.info("Client not found for fingerprint: %s, ad"
1686
"dress: %s", fpr, address)
1687
if self.use_dbus:
1688
# Emit D-Bus signal
1689
mandos_dbus_service.ClientNotFound(fpr,
1690
address[0])
1691
parent_pipe.send(False)
1692
return False
1693
1694
gobject.io_add_watch(parent_pipe.fileno(),
1695
gobject.IO_IN | gobject.IO_HUP,
1696
functools.partial(self.handle_ipc,
1697
parent_pipe =
1698
parent_pipe,
1699
proc = proc,
1700
client_object =
1701
client))
1702
parent_pipe.send(True)
1703
# remove the old hook in favor of the new above hook on
1704
# same fileno
1705
return False
1706
if command == 'funcall':
1707
funcname = request[1]
1708
args = request[2]
1709
kwargs = request[3]
1710
1711
parent_pipe.send(('data', getattr(client_object,
1712
funcname)(*args,
1713
**kwargs)))
1714
1715
if command == 'getattr':
1716
attrname = request[1]
1717
if callable(client_object.__getattribute__(attrname)):
1718
parent_pipe.send(('function',))
1719
else:
1720
parent_pipe.send(('data', client_object
1721
.__getattribute__(attrname)))
1722
1723
if command == 'setattr':
1724
attrname = request[1]
1725
value = request[2]
1726
setattr(client_object, attrname, value)
1727
1029
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1030
conditions_string)
1031
1032
# Turn the pipe file descriptor into a Python file object
1033
if source not in file_objects:
1034
file_objects[source] = os.fdopen(source, u"r", 1)
1035
1036
# Read a line from the file object
1037
cmdline = file_objects[source].readline()
1038
if not cmdline: # Empty line means end of file
1039
# close the IPC pipe
1040
file_objects[source].close()
1041
del file_objects[source]
1042
1043
# Stop calling this function
1044
return False
1045
1046
logger.debug(u"IPC command: %r", cmdline)
1047
1048
# Parse and act on command
1049
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1050
1051
if cmd == u"NOTFOUND":
1052
logger.warning(u"Client not found for fingerprint: %s",
1053
args)
1054
if self.use_dbus:
1055
# Emit D-Bus signal
1056
mandos_dbus_service.ClientNotFound(args)
1057
elif cmd == u"INVALID":
1058
for client in self.clients:
1059
if client.name == args:
1060
logger.warning(u"Client %s is invalid", args)
1061
if self.use_dbus:
1062
# Emit D-Bus signal
1063
client.Rejected()
1064
break
1065
else:
1066
logger.error(u"Unknown client %s is invalid", args)
1067
elif cmd == u"SENDING":
1068
for client in self.clients:
1069
if client.name == args:
1070
logger.info(u"Sending secret to %s", client.name)
1071
client.checked_ok()
1072
if self.use_dbus:
1073
# Emit D-Bus signal
1074
client.ReceivedSecret()
1075
break
1076
else:
1077
logger.error(u"Sending secret to unknown client %s",
1078
args)
1079
else:
1080
logger.error(u"Unknown IPC command: %r", cmdline)
1081
1082
# Keep calling this function
1728
1083
return True
1729
1084
1730
1085
1731
1086
def string_to_delta(interval):
1732
1087
"""Parse a string and return a datetime.timedelta
1733
1088
1734
>>> string_to_delta('7d')
1089
>>> string_to_delta(u'7d')
1735
1090
datetime.timedelta(7)
1736
>>> string_to_delta('60s')
1091
>>> string_to_delta(u'60s')
1737
1092
datetime.timedelta(0, 60)
1738
>>> string_to_delta('60m')
1093
>>> string_to_delta(u'60m')
1739
1094
datetime.timedelta(0, 3600)
1740
>>> string_to_delta('24h')
1095
>>> string_to_delta(u'24h')
1741
1096
datetime.timedelta(1)
1742
>>> string_to_delta('1w')
1097
>>> string_to_delta(u'1w')
1743
1098
datetime.timedelta(7)
1744
>>> string_to_delta('5m 30s')
1099
>>> string_to_delta(u'5m 30s')
1745
1100
datetime.timedelta(0, 330)
1746
1101
"""
1747
1102
timevalue = datetime.timedelta(0)
1749
1104
try:
1750
1105
suffix = unicode(s[-1])
1751
1106
value = int(s[:-1])
1752
if suffix == "d":
1107
if suffix == u"d":
1753
1108
delta = datetime.timedelta(value)
1754
elif suffix == "s":
1109
elif suffix == u"s":
1755
1110
delta = datetime.timedelta(0, value)
1756
elif suffix == "m":
1111
elif suffix == u"m":
1757
1112
delta = datetime.timedelta(0, 0, 0, 0, value)
1758
elif suffix == "h":
1113
elif suffix == u"h":
1759
1114
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1760
elif suffix == "w":
1115
elif suffix == u"w":
1761
1116
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1762
1117
else:
1763
raise ValueError("Unknown suffix %r" % suffix)
1764
except (ValueError, IndexError) as e:
1765
raise ValueError(*(e.args))
1118
raise ValueError
1119
except (ValueError, IndexError):
1120
raise ValueError
1766
1121
timevalue += delta
1767
1122
return timevalue
1768
1123
1774
1129
global if_nametoindex
1775
1130
try:
1776
1131
if_nametoindex = (ctypes.cdll.LoadLibrary
1777
(ctypes.util.find_library("c"))
1132
(ctypes.util.find_library(u"c"))
1778
1133
.if_nametoindex)
1779
1134
except (OSError, AttributeError):
1780
logger.warning("Doing if_nametoindex the hard way")
1135
logger.warning(u"Doing if_nametoindex the hard way")
1781
1136
def if_nametoindex(interface):
1782
1137
"Get an interface index the hard way, i.e. using fcntl()"
1783
1138
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1784
with contextlib.closing(socket.socket()) as s:
1139
with closing(socket.socket()) as s:
1785
1140
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1786
struct.pack(str("16s16x"),
1141
struct.pack(str(u"16s16x"),
1787
1142
interface))
1788
interface_index = struct.unpack(str("I"),
1143
interface_index = struct.unpack(str(u"I"),
1789
1144
ifreq[16:20])[0]
1790
1145
return interface_index
1791
1146
return if_nametoindex(interface)
1799
1154
sys.exit()
1800
1155
os.setsid()
1801
1156
if not nochdir:
1802
os.chdir("/")
1157
os.chdir(u"/")
1803
1158
if os.fork():
1804
1159
sys.exit()
1805
1160
if not noclose:
1807
1162
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1808
1163
if not stat.S_ISCHR(os.fstat(null).st_mode):
1809
1164
raise OSError(errno.ENODEV,
1810
"%s not a character device"
1811
% os.path.devnull)
1165
u"/dev/null not a character device")
1812
1166
os.dup2(null, sys.stdin.fileno())
1813
1167
os.dup2(null, sys.stdout.fileno())
1814
1168
os.dup2(null, sys.stderr.fileno())
1818
1172
1819
1173
def main():
1820
1174
1821
##################################################################
1175
######################################################################
1822
1176
# Parsing of options, both command line and config file
1823
1177
1824
parser = argparse.ArgumentParser()
1825
parser.add_argument("-v", "--version", action="version",
1826
version = "%%(prog)s %s" % version,
1827
help="show version number and exit")
1828
parser.add_argument("-i", "--interface", metavar="IF",
1829
help="Bind to interface IF")
1830
parser.add_argument("-a", "--address",
1831
help="Address to listen for requests on")
1832
parser.add_argument("-p", "--port", type=int,
1833
help="Port number to receive requests on")
1834
parser.add_argument("--check", action="store_true",
1835
help="Run self-test")
1836
parser.add_argument("--debug", action="store_true",
1837
help="Debug mode; run in foreground and log"
1838
" to terminal")
1839
parser.add_argument("--debuglevel", metavar="LEVEL",
1840
help="Debug level for stdout output")
1841
parser.add_argument("--priority", help="GnuTLS"
1842
" priority string (see GnuTLS documentation)")
1843
parser.add_argument("--servicename",
1844
metavar="NAME", help="Zeroconf service name")
1845
parser.add_argument("--configdir",
1846
default="/etc/mandos", metavar="DIR",
1847
help="Directory to search for configuration"
1848
" files")
1849
parser.add_argument("--no-dbus", action="store_false",
1850
dest="use_dbus", help="Do not provide D-Bus"
1851
" system bus interface")
1852
parser.add_argument("--no-ipv6", action="store_false",
1853
dest="use_ipv6", help="Do not use IPv6")
1854
options = parser.parse_args()
1178
parser = optparse.OptionParser(version = "%%prog %s" % version)
1179
parser.add_option("-i", u"--interface", type=u"string",
1180
metavar="IF", help=u"Bind to interface IF")
1181
parser.add_option("-a", u"--address", type=u"string",
1182
help=u"Address to listen for requests on")
1183
parser.add_option("-p", u"--port", type=u"int",
1184
help=u"Port number to receive requests on")
1185
parser.add_option("--check", action=u"store_true",
1186
help=u"Run self-test")
1187
parser.add_option("--debug", action=u"store_true",
1188
help=u"Debug mode; run in foreground and log to"
1189
u" terminal")
1190
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1191
u" priority string (see GnuTLS documentation)")
1192
parser.add_option("--servicename", type=u"string",
1193
metavar=u"NAME", help=u"Zeroconf service name")
1194
parser.add_option("--configdir", type=u"string",
1195
default=u"/etc/mandos", metavar=u"DIR",
1196
help=u"Directory to search for configuration"
1197
u" files")
1198
parser.add_option("--no-dbus", action=u"store_false",
1199
dest=u"use_dbus", help=u"Do not provide D-Bus"
1200
u" system bus interface")
1201
parser.add_option("--no-ipv6", action=u"store_false",
1202
dest=u"use_ipv6", help=u"Do not use IPv6")
1203
options = parser.parse_args()[0]
1855
1204
1856
1205
if options.check:
1857
1206
import doctest
1859
1208
sys.exit()
1860
1209
1861
1210
# Default values for config file for server-global settings
1862
server_defaults = { "interface": "",
1863
"address": "",
1864
"port": "",
1865
"debug": "False",
1866
"priority":
1867
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1868
"servicename": "Mandos",
1869
"use_dbus": "True",
1870
"use_ipv6": "True",
1871
"debuglevel": "",
1211
server_defaults = { u"interface": u"",
1212
u"address": u"",
1213
u"port": u"",
1214
u"debug": u"False",
1215
u"priority":
1216
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1217
u"servicename": u"Mandos",
1218
u"use_dbus": u"True",
1219
u"use_ipv6": u"True",
1872
1220
}
1873
1221
1874
1222
# Parse config file for server-global settings
1875
1223
server_config = configparser.SafeConfigParser(server_defaults)
1876
1224
del server_defaults
1877
1225
server_config.read(os.path.join(options.configdir,
1878
"mandos.conf"))
1226
u"mandos.conf"))
1879
1227
# Convert the SafeConfigParser object to a dict
1880
1228
server_settings = server_config.defaults()
1881
1229
# Use the appropriate methods on the non-string config options
1882
for option in ("debug", "use_dbus", "use_ipv6"):
1883
server_settings[option] = server_config.getboolean("DEFAULT",
1230
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1231
server_settings[option] = server_config.getboolean(u"DEFAULT",
1884
1232
option)
1885
1233
if server_settings["port"]:
1886
server_settings["port"] = server_config.getint("DEFAULT",
1887
"port")
1234
server_settings["port"] = server_config.getint(u"DEFAULT",
1235
u"port")
1888
1236
del server_config
1889
1237
1890
1238
# Override the settings from the config file with command line
1891
1239
# options, if set.
1892
for option in ("interface", "address", "port", "debug",
1893
"priority", "servicename", "configdir",
1894
"use_dbus", "use_ipv6", "debuglevel"):
1240
for option in (u"interface", u"address", u"port", u"debug",
1241
u"priority", u"servicename", u"configdir",
1242
u"use_dbus", u"use_ipv6"):
1895
1243
value = getattr(options, option)
1896
1244
if value is not None:
1897
1245
server_settings[option] = value
1905
1253
##################################################################
1906
1254
1907
1255
# For convenience
1908
debug = server_settings["debug"]
1909
debuglevel = server_settings["debuglevel"]
1910
use_dbus = server_settings["use_dbus"]
1911
use_ipv6 = server_settings["use_ipv6"]
1912
1913
if server_settings["servicename"] != "Mandos":
1256
debug = server_settings[u"debug"]
1257
use_dbus = server_settings[u"use_dbus"]
1258
use_ipv6 = server_settings[u"use_ipv6"]
1259
1260
if not debug:
1261
syslogger.setLevel(logging.WARNING)
1262
console.setLevel(logging.WARNING)
1263
1264
if server_settings[u"servicename"] != u"Mandos":
1914
1265
syslogger.setFormatter(logging.Formatter
1915
('Mandos (%s) [%%(process)d]:'
1916
' %%(levelname)s: %%(message)s'
1917
% server_settings["servicename"]))
1266
(u'Mandos (%s) [%%(process)d]:'
1267
u' %%(levelname)s: %%(message)s'
1268
% server_settings[u"servicename"]))
1918
1269
1919
1270
# Parse config file with clients
1920
client_defaults = { "timeout": "5m",
1921
"extended_timeout": "15m",
1922
"interval": "2m",
1923
"checker": "fping -q -- %%(host)s",
1924
"host": "",
1925
"approval_delay": "0s",
1926
"approval_duration": "1s",
1271
client_defaults = { u"timeout": u"1h",
1272
u"interval": u"5m",
1273
u"checker": u"fping -q -- %%(host)s",
1274
u"host": u"",
1927
1275
}
1928
1276
client_config = configparser.SafeConfigParser(client_defaults)
1929
client_config.read(os.path.join(server_settings["configdir"],
1930
"clients.conf"))
1277
client_config.read(os.path.join(server_settings[u"configdir"],
1278
u"clients.conf"))
1931
1279
1932
1280
global mandos_dbus_service
1933
1281
mandos_dbus_service = None
1934
1282
1935
tcp_server = MandosServer((server_settings["address"],
1936
server_settings["port"]),
1283
tcp_server = MandosServer((server_settings[u"address"],
1284
server_settings[u"port"]),
1937
1285
ClientHandler,
1938
interface=(server_settings["interface"]
1939
or None),
1286
interface=server_settings[u"interface"],
1940
1287
use_ipv6=use_ipv6,
1941
1288
gnutls_priority=
1942
server_settings["priority"],
1289
server_settings[u"priority"],
1943
1290
use_dbus=use_dbus)
1944
if not debug:
1945
pidfilename = "/var/run/mandos.pid"
1946
try:
1947
pidfile = open(pidfilename, "w")
1948
except IOError:
1949
logger.error("Could not open file %r", pidfilename)
1291
pidfilename = u"/var/run/mandos.pid"
1292
try:
1293
pidfile = open(pidfilename, u"w")
1294
except IOError:
1295
logger.error(u"Could not open file %r", pidfilename)
1950
1296
1951
1297
try:
1952
uid = pwd.getpwnam("_mandos").pw_uid
1953
gid = pwd.getpwnam("_mandos").pw_gid
1298
uid = pwd.getpwnam(u"_mandos").pw_uid
1299
gid = pwd.getpwnam(u"_mandos").pw_gid
1954
1300
except KeyError:
1955
1301
try:
1956
uid = pwd.getpwnam("mandos").pw_uid
1957
gid = pwd.getpwnam("mandos").pw_gid
1302
uid = pwd.getpwnam(u"mandos").pw_uid
1303
gid = pwd.getpwnam(u"mandos").pw_gid
1958
1304
except KeyError:
1959
1305
try:
1960
uid = pwd.getpwnam("nobody").pw_uid
1961
gid = pwd.getpwnam("nobody").pw_gid
1306
uid = pwd.getpwnam(u"nobody").pw_uid
1307
gid = pwd.getpwnam(u"nobody").pw_gid
1962
1308
except KeyError:
1963
1309
uid = 65534
1964
1310
gid = 65534
1965
1311
try:
1966
1312
os.setgid(gid)
1967
1313
os.setuid(uid)
1968
except OSError as error:
1314
except OSError, error:
1969
1315
if error[0] != errno.EPERM:
1970
1316
raise error
1971
1317
1972
if not debug and not debuglevel:
1973
syslogger.setLevel(logging.WARNING)
1974
console.setLevel(logging.WARNING)
1975
if debuglevel:
1976
level = getattr(logging, debuglevel.upper())
1977
syslogger.setLevel(level)
1978
console.setLevel(level)
1979
1318
# Enable all possible GnuTLS debugging
1980
1319
if debug:
1981
# Enable all possible GnuTLS debugging
1982
1983
1320
# "Use a log level over 10 to enable all debugging options."
1984
1321
# - GnuTLS manual
1985
1322
gnutls.library.functions.gnutls_global_set_log_level(11)
1986
1323
1987
1324
@gnutls.library.types.gnutls_log_func
1988
1325
def debug_gnutls(level, string):
1989
logger.debug("GnuTLS: %s", string[:-1])
1326
logger.debug(u"GnuTLS: %s", string[:-1])
1990
1327
1991
1328
(gnutls.library.functions
1992
1329
.gnutls_global_set_log_function(debug_gnutls))
1993
1994
# Redirect stdin so all checkers get /dev/null
1995
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1996
os.dup2(null, sys.stdin.fileno())
1997
if null > 2:
1998
os.close(null)
1999
else:
2000
# No console logging
2001
logger.removeHandler(console)
2002
2003
# Need to fork before connecting to D-Bus
2004
if not debug:
2005
# Close all input and output, do double fork, etc.
2006
daemon()
2007
1330
2008
1331
global main_loop
2009
1332
# From the Avahi example code
2012
1335
bus = dbus.SystemBus()
2013
1336
# End of Avahi example code
2014
1337
if use_dbus:
2015
try:
2016
bus_name = dbus.service.BusName("se.recompile.Mandos",
2017
bus, do_not_queue=True)
2018
old_bus_name = (dbus.service.BusName
2019
("se.bsnet.fukt.Mandos", bus,
2020
do_not_queue=True))
2021
except dbus.exceptions.NameExistsException as e:
2022
logger.error(unicode(e) + ", disabling D-Bus")
2023
use_dbus = False
2024
server_settings["use_dbus"] = False
2025
tcp_server.use_dbus = False
1338
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2026
1339
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2027
service = AvahiService(name = server_settings["servicename"],
2028
servicetype = "_mandos._tcp",
1340
service = AvahiService(name = server_settings[u"servicename"],
1341
servicetype = u"_mandos._tcp",
2029
1342
protocol = protocol, bus = bus)
2030
1343
if server_settings["interface"]:
2031
1344
service.interface = (if_nametoindex
2032
(str(server_settings["interface"])))
2033
2034
global multiprocessing_manager
2035
multiprocessing_manager = multiprocessing.Manager()
1345
(str(server_settings[u"interface"])))
2036
1346
2037
1347
client_class = Client
2038
1348
if use_dbus:
2039
client_class = functools.partial(ClientDBusTransitional,
2040
bus = bus)
2041
def client_config_items(config, section):
2042
special_settings = {
2043
"approved_by_default":
2044
lambda: config.getboolean(section,
2045
"approved_by_default"),
2046
}
2047
for name, value in config.items(section):
2048
try:
2049
yield (name, special_settings[name]())
2050
except KeyError:
2051
yield (name, value)
2052
1349
client_class = functools.partial(ClientDBus, bus = bus)
2053
1350
tcp_server.clients.update(set(
2054
1351
client_class(name = section,
2055
config= dict(client_config_items(
2056
client_config, section)))
1352
config= dict(client_config.items(section)))
2057
1353
for section in client_config.sections()))
2058
1354
if not tcp_server.clients:
2059
logger.warning("No clients defined")
1355
logger.warning(u"No clients defined")
1356
1357
if debug:
1358
# Redirect stdin so all checkers get /dev/null
1359
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1360
os.dup2(null, sys.stdin.fileno())
1361
if null > 2:
1362
os.close(null)
1363
else:
1364
# No console logging
1365
logger.removeHandler(console)
1366
# Close all input and output, do double fork, etc.
1367
daemon()
1368
1369
try:
1370
with closing(pidfile):
1371
pid = os.getpid()
1372
pidfile.write(str(pid) + "\n")
1373
del pidfile
1374
except IOError:
1375
logger.error(u"Could not write to file %r with PID %d",
1376
pidfilename, pid)
1377
except NameError:
1378
# "pidfile" was never created
1379
pass
1380
del pidfilename
1381
1382
def cleanup():
1383
"Cleanup function; run on exit"
1384
service.cleanup()
2060
1385
1386
while tcp_server.clients:
1387
client = tcp_server.clients.pop()
1388
client.disable_hook = None
1389
client.disable()
1390
1391
atexit.register(cleanup)
1392
2061
1393
if not debug:
2062
try:
2063
with pidfile:
2064
pid = os.getpid()
2065
pidfile.write(str(pid) + "\n".encode("utf-8"))
2066
del pidfile
2067
except IOError:
2068
logger.error("Could not write to file %r with PID %d",
2069
pidfilename, pid)
2070
except NameError:
2071
# "pidfile" was never created
2072
pass
2073
del pidfilename
2074
2075
1394
signal.signal(signal.SIGINT, signal.SIG_IGN)
2076
2077
1395
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2078
1396
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2079
1397
2081
1399
class MandosDBusService(dbus.service.Object):
2082
1400
"""A D-Bus proxy object"""
2083
1401
def __init__(self):
2084
dbus.service.Object.__init__(self, bus, "/")
2085
_interface = "se.recompile.Mandos"
2086
2087
@dbus.service.signal(_interface, signature="o")
2088
def ClientAdded(self, objpath):
2089
"D-Bus signal"
2090
pass
2091
2092
@dbus.service.signal(_interface, signature="ss")
2093
def ClientNotFound(self, fingerprint, address):
2094
"D-Bus signal"
2095
pass
2096
2097
@dbus.service.signal(_interface, signature="os")
1402
dbus.service.Object.__init__(self, bus, u"/")
1403
_interface = u"se.bsnet.fukt.Mandos"
1404
1405
@dbus.service.signal(_interface, signature=u"oa{sv}")
1406
def ClientAdded(self, objpath, properties):
1407
"D-Bus signal"
1408
pass
1409
1410
@dbus.service.signal(_interface, signature=u"s")
1411
def ClientNotFound(self, fingerprint):
1412
"D-Bus signal"
1413
pass
1414
1415
@dbus.service.signal(_interface, signature=u"os")
2098
1416
def ClientRemoved(self, objpath, name):
2099
1417
"D-Bus signal"
2100
1418
pass
2101
1419
2102
@dbus.service.method(_interface, out_signature="ao")
1420
@dbus.service.method(_interface, out_signature=u"ao")
2103
1421
def GetAllClients(self):
2104
1422
"D-Bus method"
2105
1423
return dbus.Array(c.dbus_object_path
2106
1424
for c in tcp_server.clients)
2107
1425
2108
1426
@dbus.service.method(_interface,
2109
out_signature="a{oa{sv}}")
1427
out_signature=u"a{oa{sv}}")
2110
1428
def GetAllClientsWithProperties(self):
2111
1429
"D-Bus method"
2112
1430
return dbus.Dictionary(
2113
((c.dbus_object_path, c.GetAll(""))
1431
((c.dbus_object_path, c.GetAllProperties())
2114
1432
for c in tcp_server.clients),
2115
signature="oa{sv}")
1433
signature=u"oa{sv}")
2116
1434
2117
@dbus.service.method(_interface, in_signature="o")
1435
@dbus.service.method(_interface, in_signature=u"o")
2118
1436
def RemoveClient(self, object_path):
2119
1437
"D-Bus method"
2120
1438
for c in tcp_server.clients:
2122
1440
tcp_server.clients.remove(c)
2123
1441
c.remove_from_connection()
2124
1442
# Don't signal anything except ClientRemoved
2125
c.disable(quiet=True)
1443
c.disable(signal=False)
2126
1444
# Emit D-Bus signal
2127
1445
self.ClientRemoved(object_path, c.name)
2128
1446
return
2129
raise KeyError(object_path)
1447
raise KeyError
2130
1448
2131
1449
del _interface
2132
1450
2133
class MandosDBusServiceTransitional(MandosDBusService):
2134
__metaclass__ = AlternateDBusNamesMetaclass
2135
mandos_dbus_service = MandosDBusServiceTransitional()
2136
2137
def cleanup():
2138
"Cleanup function; run on exit"
2139
service.cleanup()
2140
2141
multiprocessing.active_children()
2142
while tcp_server.clients:
2143
client = tcp_server.clients.pop()
2144
if use_dbus:
2145
client.remove_from_connection()
2146
client.disable_hook = None
2147
# Don't signal anything except ClientRemoved
2148
client.disable(quiet=True)
2149
if use_dbus:
2150
# Emit D-Bus signal
2151
mandos_dbus_service.ClientRemoved(client
2152
.dbus_object_path,
2153
client.name)
2154
2155
atexit.register(cleanup)
1451
mandos_dbus_service = MandosDBusService()
2156
1452
2157
1453
for client in tcp_server.clients:
2158
1454
if use_dbus:
2159
1455
# Emit D-Bus signal
2160
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1456
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1457
client.GetAllProperties())
2161
1458
client.enable()
2162
1459
2163
1460
tcp_server.enable()
2166
1463
# Find out what port we got
2167
1464
service.port = tcp_server.socket.getsockname()[1]
2168
1465
if use_ipv6:
2169
logger.info("Now listening on address %r, port %d,"
1466
logger.info(u"Now listening on address %r, port %d,"
2170
1467
" flowinfo %d, scope_id %d"
2171
1468
% tcp_server.socket.getsockname())
2172
1469
else: # IPv4
2173
logger.info("Now listening on address %r, port %d"
1470
logger.info(u"Now listening on address %r, port %d"
2174
1471
% tcp_server.socket.getsockname())
2175
1472
2176
1473
#service.interface = tcp_server.socket.getsockname()[3]
2179
1476
# From the Avahi example code
2180
1477
try:
2181
1478
service.activate()
2182
except dbus.exceptions.DBusException as error:
2183
logger.critical("DBusException: %s", error)
2184
cleanup()
1479
except dbus.exceptions.DBusException, error:
1480
logger.critical(u"DBusException: %s", error)
2185
1481
sys.exit(1)
2186
1482
# End of Avahi example code
2187
1483
2190
1486
(tcp_server.handle_request
2191
1487
(*args[2:], **kwargs) or True))
2192
1488
2193
logger.debug("Starting main loop")
1489
logger.debug(u"Starting main loop")
2194
1490
main_loop.run()
2195
except AvahiError as error:
2196
logger.critical("AvahiError: %s", error)
2197
cleanup()
1491
except AvahiError, error:
1492
logger.critical(u"AvahiError: %s", error)
2198
1493
sys.exit(1)
2199
1494
except KeyboardInterrupt:
2200
1495
if debug:
2201
print("", file=sys.stderr)
2202
logger.debug("Server received KeyboardInterrupt")
2203
logger.debug("Server exiting")
2204
# Must run before the D-Bus bus name gets deregistered
2205
cleanup()
2206
1496
print >> sys.stderr
1497
logger.debug(u"Server received KeyboardInterrupt")
1498
logger.debug(u"Server exiting")
2207
1499
2208
1500
if __name__ == '__main__':
2209
1501
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0