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- Committer: Teddy Hogeborn
- Date: 2011-09-26 19:36:18 UTC
- mfrom: (24.1.184 mandos)
- Revision ID: teddy@fukt.bsnet.se-20110926193618-vtj5c9hena1maixx
Merge from Björn
- files added:
- 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 © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 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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# Contact the authors at <mandos@fukt.bsnet.se>.
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#
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from __future__ import division, with_statement, absolute_import
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from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
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import SocketServer as socketserver
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import socket
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import optparse
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import argparse
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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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from contextlib import closing
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import contextlib
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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 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 = "1.0.11"
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version = "1.3.1"
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logger = logging.Logger(u'mandos')
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#logger = logging.getLogger('mandos')
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logger = logging.Logger('mandos')
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syslogger = (logging.handlers.SysLogHandler
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = "/dev/log"))
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address = str("/dev/log")))
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syslogger.setFormatter(logging.Formatter
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(u'Mandos [%(process)d]: %(levelname)s:'
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u' %(message)s'))
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('Mandos [%(process)d]: %(levelname)s:'
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' %(message)s'))
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logger.addHandler(syslogger)
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console = logging.StreamHandler()
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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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console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
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' %(levelname)s:'
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' %(message)s'))
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logger.addHandler(console)
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class AvahiError(Exception):
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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: u'Mandos'
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type: string; Example: u'_mandos._tcp'.
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name: string; Example: 'Mandos'
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type: string; Example: '_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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136
"""
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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 = u"", host = u"", max_renames = 32768,
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domain = "", host = "", 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(u"No suitable Zeroconf service name found"
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u" after %i retries, exiting.",
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logger.critical("No suitable Zeroconf service name found"
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" after %i retries, exiting.",
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self.rename_count)
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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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raise AvahiServiceError("Too many renames")
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self.name = unicode(self.server.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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syslogger.setFormatter(logging.Formatter
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(u'Mandos (%s) [%%(process)d]:'
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u' %%(levelname)s: %%(message)s'
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('Mandos (%s) [%%(process)d]:'
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' %%(levelname)s: %%(message)s'
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% self.name))
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self.remove()
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self.add()
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try:
171
self.add()
172
except dbus.exceptions.DBusException as error:
173
logger.critical("DBusException: %s", error)
174
self.cleanup()
175
os._exit(1)
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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"""
179
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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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"""
186
self.remove()
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if self.group is None:
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self.group = dbus.Interface(
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self.bus.get_object(avahi.DBUS_NAME,
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self.server.EntryGroupNew()),
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avahi.DBUS_INTERFACE_ENTRY_GROUP)
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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.entry_group_state_changed_match = (
193
self.group.connect_to_signal(
194
'StateChanged', self .entry_group_state_changed))
195
logger.debug("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):
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"""Derived from the Avahi example code"""
191
logger.debug(u"Avahi state change: %i", state)
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logger.debug("Avahi entry group state change: %i", state)
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if state == avahi.ENTRY_GROUP_ESTABLISHED:
194
logger.debug(u"Zeroconf service established.")
211
logger.debug("Zeroconf service established.")
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elif state == avahi.ENTRY_GROUP_COLLISION:
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logger.warning(u"Zeroconf service name collision.")
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logger.info("Zeroconf service name collision.")
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self.rename()
198
215
elif state == avahi.ENTRY_GROUP_FAILURE:
199
logger.critical(u"Avahi: Error in group state changed %s",
216
logger.critical("Avahi: Error in group state changed %s",
200
217
unicode(error))
201
raise AvahiGroupError(u"State changed: %s"
218
raise AvahiGroupError("State changed: %s"
202
219
% unicode(error))
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def cleanup(self):
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"""Derived from the Avahi example code"""
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if self.group is not None:
206
self.group.Free()
223
try:
224
self.group.Free()
225
except (dbus.exceptions.UnknownMethodException,
226
dbus.exceptions.DBusException) as e:
227
pass
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self.group = None
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def server_state_changed(self, state):
229
self.remove()
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def server_state_changed(self, state, error=None):
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"""Derived from the Avahi example code"""
210
if state == avahi.SERVER_COLLISION:
211
logger.error(u"Zeroconf server name collision")
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self.remove()
232
logger.debug("Avahi server state change: %i", state)
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bad_states = { avahi.SERVER_INVALID:
234
"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" }
240
if state in bad_states:
241
if bad_states[state] is not None:
242
if error is None:
243
logger.error(bad_states[state])
244
else:
245
logger.error(bad_states[state] + ": %r", error)
246
self.cleanup()
213
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elif state == avahi.SERVER_RUNNING:
214
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self.add()
249
else:
250
if error is None:
251
logger.debug("Unknown state: %r", state)
252
else:
253
logger.debug("Unknown state: %r: %r", state, error)
215
254
def activate(self):
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"""Derived from the Avahi example code"""
217
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if self.server is None:
218
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self.server = dbus.Interface(
219
258
self.bus.get_object(avahi.DBUS_NAME,
220
avahi.DBUS_PATH_SERVER),
259
avahi.DBUS_PATH_SERVER,
260
follow_name_owner_changes=True),
221
261
avahi.DBUS_INTERFACE_SERVER)
222
self.server.connect_to_signal(u"StateChanged",
262
self.server.connect_to_signal("StateChanged",
223
263
self.server_state_changed)
224
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self.server_state_changed(self.server.GetState())
225
265
226
266
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def _timedelta_to_milliseconds(td):
268
"Convert a datetime.timedelta() to milliseconds"
269
return ((td.days * 24 * 60 * 60 * 1000)
270
+ (td.seconds * 1000)
271
+ (td.microseconds // 1000))
272
227
273
class Client(object):
228
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"""A representation of a client host served by this server.
229
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Attributes:
231
name: string; from the config file, used in log messages and
232
D-Bus identifiers
233
fingerprint: string (40 or 32 hexadecimal digits); used to
234
uniquely identify the client
235
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
238
last_enabled: datetime.datetime(); (UTC)
239
enabled: bool()
240
last_checked_ok: datetime.datetime(); (UTC) or None
241
timeout: datetime.timedelta(); How long from last_checked_ok
242
until this client is invalid
243
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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_approved: bool(); 'None' if not yet approved/disapproved
278
approval_delay: datetime.timedelta(); Time to wait for approval
279
approval_duration: datetime.timedelta(); Duration of one approval
245
280
checker: subprocess.Popen(); a running checker process used
246
281
to see if the client lives.
247
282
'None' if no process is running.
248
checker_initiator_tag: a gobject event source tag, or None
249
disable_initiator_tag: - '' -
250
checker_callback_tag: - '' -
251
checker_command: string; External command which is run to check if
252
client lives. %() expansions are done at
283
checker_callback_tag: a gobject event source tag, or None
284
checker_command: string; External command which is run to check
285
if client lives. %() expansions are done at
253
286
runtime with vars(self) as dict, so that for
254
287
instance %(name)s can be used in the command.
288
checker_initiator_tag: a gobject event source tag, or None
289
created: datetime.datetime(); (UTC) object creation
255
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current_checker_command: string; current running checker_command
291
disable_hook: If set, called by disable() as disable_hook(self)
292
disable_initiator_tag: a gobject event source tag, or None
293
enabled: bool()
294
fingerprint: string (40 or 32 hexadecimal digits); used to
295
uniquely identify the client
296
host: string; available for use by the checker command
297
interval: datetime.timedelta(); How often to start a new checker
298
last_approval_request: datetime.datetime(); (UTC) or None
299
last_checked_ok: datetime.datetime(); (UTC) or None
300
last_enabled: datetime.datetime(); (UTC)
301
name: string; from the config file, used in log messages and
302
D-Bus identifiers
303
secret: bytestring; sent verbatim (over TLS) to client
304
timeout: datetime.timedelta(); How long from last_checked_ok
305
until this client is disabled
306
extended_timeout: extra long timeout when password has been sent
307
runtime_expansions: Allowed attributes for runtime expansion.
308
expires: datetime.datetime(); time (UTC) when a client will be
309
disabled, or None
256
310
"""
257
311
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))
264
312
runtime_expansions = ("approval_delay", "approval_duration",
313
"created", "enabled", "fingerprint",
314
"host", "interval", "last_checked_ok",
315
"last_enabled", "name", "timeout")
316
265
317
def timeout_milliseconds(self):
266
318
"Return the 'timeout' attribute in milliseconds"
267
return self._datetime_to_milliseconds(self.timeout)
319
return _timedelta_to_milliseconds(self.timeout)
320
321
def extended_timeout_milliseconds(self):
322
"Return the 'extended_timeout' attribute in milliseconds"
323
return _timedelta_to_milliseconds(self.extended_timeout)
268
324
269
325
def interval_milliseconds(self):
270
326
"Return the 'interval' attribute in milliseconds"
271
return self._datetime_to_milliseconds(self.interval)
327
return _timedelta_to_milliseconds(self.interval)
328
329
def approval_delay_milliseconds(self):
330
return _timedelta_to_milliseconds(self.approval_delay)
272
331
273
332
def __init__(self, name = None, disable_hook=None, config=None):
274
333
"""Note: the 'checker' key in 'config' sets the
277
336
self.name = name
278
337
if config is None:
279
338
config = {}
280
logger.debug(u"Creating client %r", self.name)
339
logger.debug("Creating client %r", self.name)
281
340
# Uppercase and remove spaces from fingerprint for later
282
341
# comparison purposes with return value from the fingerprint()
283
342
# function
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:
343
self.fingerprint = (config["fingerprint"].upper()
344
.replace(" ", ""))
345
logger.debug(" Fingerprint: %s", self.fingerprint)
346
if "secret" in config:
347
self.secret = config["secret"].decode("base64")
348
elif "secfile" in config:
349
with open(os.path.expanduser(os.path.expandvars
350
(config["secfile"])),
351
"rb") as secfile:
293
352
self.secret = secfile.read()
294
353
else:
295
raise TypeError(u"No secret or secfile for client %s"
354
raise TypeError("No secret or secfile for client %s"
296
355
% self.name)
297
self.host = config.get(u"host", u"")
356
self.host = config.get("host", "")
298
357
self.created = datetime.datetime.utcnow()
299
358
self.enabled = False
359
self.last_approval_request = None
300
360
self.last_enabled = None
301
361
self.last_checked_ok = None
302
self.timeout = string_to_delta(config[u"timeout"])
303
self.interval = string_to_delta(config[u"interval"])
362
self.timeout = string_to_delta(config["timeout"])
363
self.extended_timeout = string_to_delta(config["extended_timeout"])
364
self.interval = string_to_delta(config["interval"])
304
365
self.disable_hook = disable_hook
305
366
self.checker = None
306
367
self.checker_initiator_tag = None
307
368
self.disable_initiator_tag = None
369
self.expires = None
308
370
self.checker_callback_tag = None
309
self.checker_command = config[u"checker"]
371
self.checker_command = config["checker"]
310
372
self.current_checker_command = None
311
373
self.last_connect = None
374
self._approved = None
375
self.approved_by_default = config.get("approved_by_default",
376
True)
377
self.approvals_pending = 0
378
self.approval_delay = string_to_delta(
379
config["approval_delay"])
380
self.approval_duration = string_to_delta(
381
config["approval_duration"])
382
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
312
383
384
def send_changedstate(self):
385
self.changedstate.acquire()
386
self.changedstate.notify_all()
387
self.changedstate.release()
388
313
389
def enable(self):
314
390
"""Start this client's checker and timeout hooks"""
315
if getattr(self, u"enabled", False):
391
if getattr(self, "enabled", False):
316
392
# Already enabled
317
393
return
318
self.last_enabled = datetime.datetime.utcnow()
394
self.send_changedstate()
319
395
# Schedule a new checker to be started an 'interval' from now,
320
396
# and every interval from then on.
321
397
self.checker_initiator_tag = (gobject.timeout_add
322
398
(self.interval_milliseconds(),
323
399
self.start_checker))
324
# Also start a new checker *right now*.
325
self.start_checker()
326
400
# Schedule a disable() when 'timeout' has passed
401
self.expires = datetime.datetime.utcnow() + self.timeout
327
402
self.disable_initiator_tag = (gobject.timeout_add
328
403
(self.timeout_milliseconds(),
329
404
self.disable))
330
405
self.enabled = True
406
self.last_enabled = datetime.datetime.utcnow()
407
# Also start a new checker *right now*.
408
self.start_checker()
331
409
332
def disable(self):
410
def disable(self, quiet=True):
333
411
"""Disable this client."""
334
412
if not getattr(self, "enabled", False):
335
413
return False
336
logger.info(u"Disabling client %s", self.name)
337
if getattr(self, u"disable_initiator_tag", False):
414
if not quiet:
415
self.send_changedstate()
416
if not quiet:
417
logger.info("Disabling client %s", self.name)
418
if getattr(self, "disable_initiator_tag", False):
338
419
gobject.source_remove(self.disable_initiator_tag)
339
420
self.disable_initiator_tag = None
340
if getattr(self, u"checker_initiator_tag", False):
421
self.expires = None
422
if getattr(self, "checker_initiator_tag", False):
341
423
gobject.source_remove(self.checker_initiator_tag)
342
424
self.checker_initiator_tag = None
343
425
self.stop_checker()
358
440
if os.WIFEXITED(condition):
359
441
exitstatus = os.WEXITSTATUS(condition)
360
442
if exitstatus == 0:
361
logger.info(u"Checker for %(name)s succeeded",
443
logger.info("Checker for %(name)s succeeded",
362
444
vars(self))
363
445
self.checked_ok()
364
446
else:
365
logger.info(u"Checker for %(name)s failed",
447
logger.info("Checker for %(name)s failed",
366
448
vars(self))
367
449
else:
368
logger.warning(u"Checker for %(name)s crashed?",
450
logger.warning("Checker for %(name)s crashed?",
369
451
vars(self))
370
452
371
def checked_ok(self):
453
def checked_ok(self, timeout=None):
372
454
"""Bump up the timeout for this client.
373
455
374
456
This should only be called when the client has been seen,
375
457
alive and well.
376
458
"""
459
if timeout is None:
460
timeout = self.timeout
377
461
self.last_checked_ok = datetime.datetime.utcnow()
378
462
gobject.source_remove(self.disable_initiator_tag)
463
self.expires = datetime.datetime.utcnow() + timeout
379
464
self.disable_initiator_tag = (gobject.timeout_add
380
(self.timeout_milliseconds(),
465
(_timedelta_to_milliseconds(timeout),
381
466
self.disable))
382
467
468
def need_approval(self):
469
self.last_approval_request = datetime.datetime.utcnow()
470
383
471
def start_checker(self):
384
472
"""Start a new checker subprocess if one is not running.
385
473
391
479
# client would inevitably timeout, since no checker would get
392
480
# a chance to run to completion. If we instead leave running
393
481
# checkers alone, the checker would have to take more time
394
# than 'timeout' for the client to be declared invalid, which
395
# is as it should be.
482
# than 'timeout' for the client to be disabled, which is as it
483
# should be.
396
484
397
485
# If a checker exists, make sure it is not a zombie
398
if self.checker is not None:
486
try:
399
487
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
488
except (AttributeError, OSError) as error:
489
if (isinstance(error, OSError)
490
and error.errno != errno.ECHILD):
491
raise error
492
else:
400
493
if pid:
401
logger.warning(u"Checker was a zombie")
494
logger.warning("Checker was a zombie")
402
495
gobject.source_remove(self.checker_callback_tag)
403
496
self.checker_callback(pid, status,
404
497
self.current_checker_command)
409
502
command = self.checker_command % self.host
410
503
except TypeError:
411
504
# Escape attributes for the shell
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())
505
escaped_attrs = dict(
506
(attr,
507
re.escape(unicode(str(getattr(self, attr, "")),
508
errors=
509
'replace')))
510
for attr in
511
self.runtime_expansions)
512
418
513
try:
419
514
command = self.checker_command % escaped_attrs
420
except TypeError, error:
421
logger.error(u'Could not format string "%s":'
422
u' %s', self.checker_command, error)
515
except TypeError as error:
516
logger.error('Could not format string "%s":'
517
' %s', self.checker_command, error)
423
518
return True # Try again later
424
519
self.current_checker_command = command
425
520
try:
426
logger.info(u"Starting checker %r for %s",
521
logger.info("Starting checker %r for %s",
427
522
command, self.name)
428
523
# We don't need to redirect stdout and stderr, since
429
524
# in normal mode, that is already done by daemon(),
431
526
# always replaced by /dev/null.)
432
527
self.checker = subprocess.Popen(command,
433
528
close_fds=True,
434
shell=True, cwd=u"/")
529
shell=True, cwd="/")
435
530
self.checker_callback_tag = (gobject.child_watch_add
436
531
(self.checker.pid,
437
532
self.checker_callback,
442
537
if pid:
443
538
gobject.source_remove(self.checker_callback_tag)
444
539
self.checker_callback(pid, status, command)
445
except OSError, error:
446
logger.error(u"Failed to start subprocess: %s",
540
except OSError as error:
541
logger.error("Failed to start subprocess: %s",
447
542
error)
448
543
# Re-run this periodically if run by gobject.timeout_add
449
544
return True
453
548
if self.checker_callback_tag:
454
549
gobject.source_remove(self.checker_callback_tag)
455
550
self.checker_callback_tag = None
456
if getattr(self, u"checker", None) is None:
551
if getattr(self, "checker", None) is None:
457
552
return
458
logger.debug(u"Stopping checker for %(name)s", vars(self))
553
logger.debug("Stopping checker for %(name)s", vars(self))
459
554
try:
460
555
os.kill(self.checker.pid, signal.SIGTERM)
461
#os.sleep(0.5)
556
#time.sleep(0.5)
462
557
#if self.checker.poll() is None:
463
558
# os.kill(self.checker.pid, signal.SIGKILL)
464
except OSError, error:
559
except OSError as error:
465
560
if error.errno != errno.ESRCH: # No such process
466
561
raise
467
562
self.checker = None
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):
563
564
def dbus_service_property(dbus_interface, signature="v",
565
access="readwrite", byte_arrays=False):
566
"""Decorators for marking methods of a DBusObjectWithProperties to
567
become properties on the D-Bus.
568
569
The decorated method will be called with no arguments by "Get"
570
and with one argument by "Set".
571
572
The parameters, where they are supported, are the same as
573
dbus.service.method, except there is only "signature", since the
574
type from Get() and the type sent to Set() is the same.
575
"""
576
# Encoding deeply encoded byte arrays is not supported yet by the
577
# "Set" method, so we fail early here:
578
if byte_arrays and signature != "ay":
579
raise ValueError("Byte arrays not supported for non-'ay'"
580
" signature %r" % signature)
581
def decorator(func):
582
func._dbus_is_property = True
583
func._dbus_interface = dbus_interface
584
func._dbus_signature = signature
585
func._dbus_access = access
586
func._dbus_name = func.__name__
587
if func._dbus_name.endswith("_dbus_property"):
588
func._dbus_name = func._dbus_name[:-14]
589
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
590
return func
591
return decorator
592
593
594
class DBusPropertyException(dbus.exceptions.DBusException):
595
"""A base class for D-Bus property-related exceptions
596
"""
597
def __unicode__(self):
598
return unicode(str(self))
599
600
601
class DBusPropertyAccessException(DBusPropertyException):
602
"""A property's access permissions disallows an operation.
603
"""
604
pass
605
606
607
class DBusPropertyNotFound(DBusPropertyException):
608
"""An attempt was made to access a non-existing property.
609
"""
610
pass
611
612
613
class DBusObjectWithProperties(dbus.service.Object):
614
"""A D-Bus object with properties.
615
616
Classes inheriting from this can use the dbus_service_property
617
decorator to expose methods as D-Bus properties. It exposes the
618
standard Get(), Set(), and GetAll() methods on the D-Bus.
619
"""
620
621
@staticmethod
622
def _is_dbus_property(obj):
623
return getattr(obj, "_dbus_is_property", False)
624
625
def _get_all_dbus_properties(self):
626
"""Returns a generator of (name, attribute) pairs
627
"""
628
return ((prop._dbus_name, prop)
629
for name, prop in
630
inspect.getmembers(self, self._is_dbus_property))
631
632
def _get_dbus_property(self, interface_name, property_name):
633
"""Returns a bound method if one exists which is a D-Bus
634
property with the specified name and interface.
635
"""
636
for name in (property_name,
637
property_name + "_dbus_property"):
638
prop = getattr(self, name, None)
639
if (prop is None
640
or not self._is_dbus_property(prop)
641
or prop._dbus_name != property_name
642
or (interface_name and prop._dbus_interface
643
and interface_name != prop._dbus_interface)):
644
continue
645
return prop
646
# No such property
647
raise DBusPropertyNotFound(self.dbus_object_path + ":"
648
+ interface_name + "."
649
+ property_name)
650
651
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
652
out_signature="v")
653
def Get(self, interface_name, property_name):
654
"""Standard D-Bus property Get() method, see D-Bus standard.
655
"""
656
prop = self._get_dbus_property(interface_name, property_name)
657
if prop._dbus_access == "write":
658
raise DBusPropertyAccessException(property_name)
659
value = prop()
660
if not hasattr(value, "variant_level"):
661
return value
662
return type(value)(value, variant_level=value.variant_level+1)
663
664
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
665
def Set(self, interface_name, property_name, value):
666
"""Standard D-Bus property Set() method, see D-Bus standard.
667
"""
668
prop = self._get_dbus_property(interface_name, property_name)
669
if prop._dbus_access == "read":
670
raise DBusPropertyAccessException(property_name)
671
if prop._dbus_get_args_options["byte_arrays"]:
672
# The byte_arrays option is not supported yet on
673
# signatures other than "ay".
674
if prop._dbus_signature != "ay":
675
raise ValueError
676
value = dbus.ByteArray(''.join(unichr(byte)
677
for byte in value))
678
prop(value)
679
680
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
681
out_signature="a{sv}")
682
def GetAll(self, interface_name):
683
"""Standard D-Bus property GetAll() method, see D-Bus
684
standard.
685
686
Note: Will not include properties with access="write".
687
"""
688
all = {}
689
for name, prop in self._get_all_dbus_properties():
690
if (interface_name
691
and interface_name != prop._dbus_interface):
692
# Interface non-empty but did not match
693
continue
694
# Ignore write-only properties
695
if prop._dbus_access == "write":
696
continue
697
value = prop()
698
if not hasattr(value, "variant_level"):
699
all[name] = value
700
continue
701
all[name] = type(value)(value, variant_level=
702
value.variant_level+1)
703
return dbus.Dictionary(all, signature="sv")
704
705
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
706
out_signature="s",
707
path_keyword='object_path',
708
connection_keyword='connection')
709
def Introspect(self, object_path, connection):
710
"""Standard D-Bus method, overloaded to insert property tags.
711
"""
712
xmlstring = dbus.service.Object.Introspect(self, object_path,
713
connection)
714
try:
715
document = xml.dom.minidom.parseString(xmlstring)
716
def make_tag(document, name, prop):
717
e = document.createElement("property")
718
e.setAttribute("name", name)
719
e.setAttribute("type", prop._dbus_signature)
720
e.setAttribute("access", prop._dbus_access)
721
return e
722
for if_tag in document.getElementsByTagName("interface"):
723
for tag in (make_tag(document, name, prop)
724
for name, prop
725
in self._get_all_dbus_properties()
726
if prop._dbus_interface
727
== if_tag.getAttribute("name")):
728
if_tag.appendChild(tag)
729
# Add the names to the return values for the
730
# "org.freedesktop.DBus.Properties" methods
731
if (if_tag.getAttribute("name")
732
== "org.freedesktop.DBus.Properties"):
733
for cn in if_tag.getElementsByTagName("method"):
734
if cn.getAttribute("name") == "Get":
735
for arg in cn.getElementsByTagName("arg"):
736
if (arg.getAttribute("direction")
737
== "out"):
738
arg.setAttribute("name", "value")
739
elif cn.getAttribute("name") == "GetAll":
740
for arg in cn.getElementsByTagName("arg"):
741
if (arg.getAttribute("direction")
742
== "out"):
743
arg.setAttribute("name", "props")
744
xmlstring = document.toxml("utf-8")
745
document.unlink()
746
except (AttributeError, xml.dom.DOMException,
747
xml.parsers.expat.ExpatError) as error:
748
logger.error("Failed to override Introspection method",
749
error)
750
return xmlstring
751
752
753
def datetime_to_dbus (dt, variant_level=0):
754
"""Convert a UTC datetime.datetime() to a D-Bus type."""
755
if dt is None:
756
return dbus.String("", variant_level = variant_level)
757
return dbus.String(dt.isoformat(),
758
variant_level=variant_level)
759
760
class ClientDBus(Client, DBusObjectWithProperties):
481
761
"""A Client class using D-Bus
482
762
483
763
Attributes:
484
764
dbus_object_path: dbus.ObjectPath
485
765
bus: dbus.SystemBus()
486
766
"""
767
768
runtime_expansions = (Client.runtime_expansions
769
+ ("dbus_object_path",))
770
487
771
# dbus.service.Object doesn't use super(), so we can't either.
488
772
489
773
def __init__(self, bus = None, *args, **kwargs):
774
self._approvals_pending = 0
490
775
self.bus = bus
491
776
Client.__init__(self, *args, **kwargs)
492
777
# Only now, when this client is initialized, can it show up on
493
778
# the D-Bus
779
client_object_name = unicode(self.name).translate(
780
{ord("."): ord("_"),
781
ord("-"): ord("_")})
494
782
self.dbus_object_path = (dbus.ObjectPath
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
783
("/clients/" + client_object_name))
784
DBusObjectWithProperties.__init__(self, self.bus,
785
self.dbus_object_path)
786
787
def notifychangeproperty(transform_func,
788
dbus_name, type_func=lambda x: x,
789
variant_level=1):
790
""" Modify a variable so that its a property that announce its
791
changes to DBus.
792
transform_fun: Function that takes a value and transform it to
793
DBus type.
794
dbus_name: DBus name of the variable
795
type_func: Function that transform the value before sending it
796
to DBus
797
variant_level: DBus variant level. default: 1
798
"""
799
real_value = [None,]
800
def setter(self, value):
801
old_value = real_value[0]
802
real_value[0] = value
803
if hasattr(self, "dbus_object_path"):
804
if type_func(old_value) != type_func(real_value[0]):
805
dbus_value = transform_func(type_func(real_value[0]),
806
variant_level)
807
self.PropertyChanged(dbus.String(dbus_name),
808
dbus_value)
809
810
return property(lambda self: real_value[0], setter)
811
812
813
expires = notifychangeproperty(datetime_to_dbus, "Expires")
814
approvals_pending = notifychangeproperty(dbus.Boolean,
815
"ApprovalPending",
816
type_func = bool)
817
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
818
last_enabled = notifychangeproperty(datetime_to_dbus,
819
"LastEnabled")
820
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
821
type_func = lambda checker: checker is not None)
822
last_checked_ok = notifychangeproperty(datetime_to_dbus,
823
"LastCheckedOK")
824
last_approval_request = notifychangeproperty(datetime_to_dbus,
825
"LastApprovalRequest")
826
approved_by_default = notifychangeproperty(dbus.Boolean,
827
"ApprovedByDefault")
828
approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
829
type_func = _timedelta_to_milliseconds)
830
approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
831
type_func = _timedelta_to_milliseconds)
832
host = notifychangeproperty(dbus.String, "Host")
833
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
834
type_func = _timedelta_to_milliseconds)
835
extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
836
type_func = _timedelta_to_milliseconds)
837
interval = notifychangeproperty(dbus.UInt16, "Interval",
838
type_func = _timedelta_to_milliseconds)
839
checker_command = notifychangeproperty(dbus.String, "Checker")
840
841
del notifychangeproperty
527
842
528
843
def __del__(self, *args, **kwargs):
529
844
try:
530
845
self.remove_from_connection()
531
846
except LookupError:
532
847
pass
533
if hasattr(dbus.service.Object, u"__del__"):
534
dbus.service.Object.__del__(self, *args, **kwargs)
848
if hasattr(DBusObjectWithProperties, "__del__"):
849
DBusObjectWithProperties.__del__(self, *args, **kwargs)
535
850
Client.__del__(self, *args, **kwargs)
536
851
537
852
def checker_callback(self, pid, condition, command,
538
853
*args, **kwargs):
539
854
self.checker_callback_tag = None
540
855
self.checker = None
541
# Emit D-Bus signal
542
self.PropertyChanged(dbus.String(u"checker_running"),
543
dbus.Boolean(False, variant_level=1))
544
856
if os.WIFEXITED(condition):
545
857
exitstatus = os.WEXITSTATUS(condition)
546
858
# Emit D-Bus signal
555
867
556
868
return Client.checker_callback(self, pid, condition, command,
557
869
*args, **kwargs)
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
870
568
871
def start_checker(self, *args, **kwargs):
569
872
old_checker = self.checker
570
873
if self.checker is not None:
577
880
and old_checker_pid != self.checker.pid):
578
881
# Emit D-Bus signal
579
882
self.CheckerStarted(self.current_checker_command)
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()
883
return r
884
885
def _reset_approved(self):
886
self._approved = None
887
return False
888
889
def approve(self, value=True):
890
self.send_changedstate()
891
self._approved = value
892
gobject.timeout_add(_timedelta_to_milliseconds
893
(self.approval_duration),
894
self._reset_approved)
895
896
897
## D-Bus methods, signals & properties
898
_interface = "se.bsnet.fukt.Mandos.Client"
899
900
## Signals
601
901
602
902
# CheckerCompleted - signal
603
@dbus.service.signal(_interface, signature=u"nxs")
903
@dbus.service.signal(_interface, signature="nxs")
604
904
def CheckerCompleted(self, exitcode, waitstatus, command):
605
905
"D-Bus signal"
606
906
pass
607
907
608
908
# CheckerStarted - signal
609
@dbus.service.signal(_interface, signature=u"s")
909
@dbus.service.signal(_interface, signature="s")
610
910
def CheckerStarted(self, command):
611
911
"D-Bus signal"
612
912
pass
613
913
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
662
914
# PropertyChanged - signal
663
@dbus.service.signal(_interface, signature=u"sv")
915
@dbus.service.signal(_interface, signature="sv")
664
916
def PropertyChanged(self, property, value):
665
917
"D-Bus signal"
666
918
pass
667
919
668
# ReceivedSecret - signal
920
# GotSecret - signal
669
921
@dbus.service.signal(_interface)
670
def ReceivedSecret(self):
671
"D-Bus signal"
922
def GotSecret(self):
923
"""D-Bus signal
924
Is sent after a successful transfer of secret from the Mandos
925
server to mandos-client
926
"""
672
927
pass
673
928
674
929
# Rejected - signal
675
@dbus.service.signal(_interface)
676
def Rejected(self):
930
@dbus.service.signal(_interface, signature="s")
931
def Rejected(self, reason):
677
932
"D-Bus signal"
678
933
pass
679
934
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)))
935
# NeedApproval - signal
936
@dbus.service.signal(_interface, signature="tb")
937
def NeedApproval(self, timeout, default):
938
"D-Bus signal"
939
return self.need_approval()
940
941
## Methods
942
943
# Approve - method
944
@dbus.service.method(_interface, in_signature="b")
945
def Approve(self, value):
946
self.approve(value)
947
948
# CheckedOK - method
949
@dbus.service.method(_interface)
950
def CheckedOK(self):
951
self.checked_ok()
723
952
724
953
# Enable - method
725
954
@dbus.service.method(_interface)
744
973
def StopChecker(self):
745
974
self.stop_checker()
746
975
976
## Properties
977
978
# ApprovalPending - property
979
@dbus_service_property(_interface, signature="b", access="read")
980
def ApprovalPending_dbus_property(self):
981
return dbus.Boolean(bool(self.approvals_pending))
982
983
# ApprovedByDefault - property
984
@dbus_service_property(_interface, signature="b",
985
access="readwrite")
986
def ApprovedByDefault_dbus_property(self, value=None):
987
if value is None: # get
988
return dbus.Boolean(self.approved_by_default)
989
self.approved_by_default = bool(value)
990
991
# ApprovalDelay - property
992
@dbus_service_property(_interface, signature="t",
993
access="readwrite")
994
def ApprovalDelay_dbus_property(self, value=None):
995
if value is None: # get
996
return dbus.UInt64(self.approval_delay_milliseconds())
997
self.approval_delay = datetime.timedelta(0, 0, 0, value)
998
999
# ApprovalDuration - property
1000
@dbus_service_property(_interface, signature="t",
1001
access="readwrite")
1002
def ApprovalDuration_dbus_property(self, value=None):
1003
if value is None: # get
1004
return dbus.UInt64(_timedelta_to_milliseconds(
1005
self.approval_duration))
1006
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1007
1008
# Name - property
1009
@dbus_service_property(_interface, signature="s", access="read")
1010
def Name_dbus_property(self):
1011
return dbus.String(self.name)
1012
1013
# Fingerprint - property
1014
@dbus_service_property(_interface, signature="s", access="read")
1015
def Fingerprint_dbus_property(self):
1016
return dbus.String(self.fingerprint)
1017
1018
# Host - property
1019
@dbus_service_property(_interface, signature="s",
1020
access="readwrite")
1021
def Host_dbus_property(self, value=None):
1022
if value is None: # get
1023
return dbus.String(self.host)
1024
self.host = value
1025
1026
# Created - property
1027
@dbus_service_property(_interface, signature="s", access="read")
1028
def Created_dbus_property(self):
1029
return dbus.String(datetime_to_dbus(self.created))
1030
1031
# LastEnabled - property
1032
@dbus_service_property(_interface, signature="s", access="read")
1033
def LastEnabled_dbus_property(self):
1034
return datetime_to_dbus(self.last_enabled)
1035
1036
# Enabled - property
1037
@dbus_service_property(_interface, signature="b",
1038
access="readwrite")
1039
def Enabled_dbus_property(self, value=None):
1040
if value is None: # get
1041
return dbus.Boolean(self.enabled)
1042
if value:
1043
self.enable()
1044
else:
1045
self.disable()
1046
1047
# LastCheckedOK - property
1048
@dbus_service_property(_interface, signature="s",
1049
access="readwrite")
1050
def LastCheckedOK_dbus_property(self, value=None):
1051
if value is not None:
1052
self.checked_ok()
1053
return
1054
return datetime_to_dbus(self.last_checked_ok)
1055
1056
# Expires - property
1057
@dbus_service_property(_interface, signature="s", access="read")
1058
def Expires_dbus_property(self):
1059
return datetime_to_dbus(self.expires)
1060
1061
# LastApprovalRequest - property
1062
@dbus_service_property(_interface, signature="s", access="read")
1063
def LastApprovalRequest_dbus_property(self):
1064
return datetime_to_dbus(self.last_approval_request)
1065
1066
# Timeout - property
1067
@dbus_service_property(_interface, signature="t",
1068
access="readwrite")
1069
def Timeout_dbus_property(self, value=None):
1070
if value is None: # get
1071
return dbus.UInt64(self.timeout_milliseconds())
1072
self.timeout = datetime.timedelta(0, 0, 0, value)
1073
if getattr(self, "disable_initiator_tag", None) is None:
1074
return
1075
# Reschedule timeout
1076
gobject.source_remove(self.disable_initiator_tag)
1077
self.disable_initiator_tag = None
1078
self.expires = None
1079
time_to_die = (self.
1080
_timedelta_to_milliseconds((self
1081
.last_checked_ok
1082
+ self.timeout)
1083
- datetime.datetime
1084
.utcnow()))
1085
if time_to_die <= 0:
1086
# The timeout has passed
1087
self.disable()
1088
else:
1089
self.expires = (datetime.datetime.utcnow()
1090
+ datetime.timedelta(milliseconds = time_to_die))
1091
self.disable_initiator_tag = (gobject.timeout_add
1092
(time_to_die, self.disable))
1093
1094
# ExtendedTimeout - property
1095
@dbus_service_property(_interface, signature="t",
1096
access="readwrite")
1097
def ExtendedTimeout_dbus_property(self, value=None):
1098
if value is None: # get
1099
return dbus.UInt64(self.extended_timeout_milliseconds())
1100
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1101
1102
# Interval - property
1103
@dbus_service_property(_interface, signature="t",
1104
access="readwrite")
1105
def Interval_dbus_property(self, value=None):
1106
if value is None: # get
1107
return dbus.UInt64(self.interval_milliseconds())
1108
self.interval = datetime.timedelta(0, 0, 0, value)
1109
if getattr(self, "checker_initiator_tag", None) is None:
1110
return
1111
# Reschedule checker run
1112
gobject.source_remove(self.checker_initiator_tag)
1113
self.checker_initiator_tag = (gobject.timeout_add
1114
(value, self.start_checker))
1115
self.start_checker() # Start one now, too
1116
1117
# Checker - property
1118
@dbus_service_property(_interface, signature="s",
1119
access="readwrite")
1120
def Checker_dbus_property(self, value=None):
1121
if value is None: # get
1122
return dbus.String(self.checker_command)
1123
self.checker_command = value
1124
1125
# CheckerRunning - property
1126
@dbus_service_property(_interface, signature="b",
1127
access="readwrite")
1128
def CheckerRunning_dbus_property(self, value=None):
1129
if value is None: # get
1130
return dbus.Boolean(self.checker is not None)
1131
if value:
1132
self.start_checker()
1133
else:
1134
self.stop_checker()
1135
1136
# ObjectPath - property
1137
@dbus_service_property(_interface, signature="o", access="read")
1138
def ObjectPath_dbus_property(self):
1139
return self.dbus_object_path # is already a dbus.ObjectPath
1140
1141
# Secret = property
1142
@dbus_service_property(_interface, signature="ay",
1143
access="write", byte_arrays=True)
1144
def Secret_dbus_property(self, value):
1145
self.secret = str(value)
1146
747
1147
del _interface
748
1148
749
1149
1150
class ProxyClient(object):
1151
def __init__(self, child_pipe, fpr, address):
1152
self._pipe = child_pipe
1153
self._pipe.send(('init', fpr, address))
1154
if not self._pipe.recv():
1155
raise KeyError()
1156
1157
def __getattribute__(self, name):
1158
if(name == '_pipe'):
1159
return super(ProxyClient, self).__getattribute__(name)
1160
self._pipe.send(('getattr', name))
1161
data = self._pipe.recv()
1162
if data[0] == 'data':
1163
return data[1]
1164
if data[0] == 'function':
1165
def func(*args, **kwargs):
1166
self._pipe.send(('funcall', name, args, kwargs))
1167
return self._pipe.recv()[1]
1168
return func
1169
1170
def __setattr__(self, name, value):
1171
if(name == '_pipe'):
1172
return super(ProxyClient, self).__setattr__(name, value)
1173
self._pipe.send(('setattr', name, value))
1174
1175
750
1176
class ClientHandler(socketserver.BaseRequestHandler, object):
751
1177
"""A class to handle client connections.
752
1178
754
1180
Note: This will run in its own forked process."""
755
1181
756
1182
def handle(self):
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:
1183
with contextlib.closing(self.server.child_pipe) as child_pipe:
1184
logger.info("TCP connection from: %s",
1185
unicode(self.client_address))
1186
logger.debug("Pipe FD: %d",
1187
self.server.child_pipe.fileno())
1188
762
1189
session = (gnutls.connection
763
1190
.ClientSession(self.request,
764
1191
gnutls.connection
765
1192
.X509Credentials()))
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
1193
776
1194
# Note: gnutls.connection.X509Credentials is really a
777
1195
# generic GnuTLS certificate credentials object so long as
778
1196
# no X.509 keys are added to it. Therefore, we can use it
779
1197
# here despite using OpenPGP certificates.
780
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"))
1198
1199
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1200
# "+AES-256-CBC", "+SHA1",
1201
# "+COMP-NULL", "+CTYPE-OPENPGP",
1202
# "+DHE-DSS"))
785
1203
# Use a fallback default, since this MUST be set.
786
1204
priority = self.server.gnutls_priority
787
1205
if priority is None:
788
priority = u"NORMAL"
1206
priority = "NORMAL"
789
1207
(gnutls.library.functions
790
1208
.gnutls_priority_set_direct(session._c_object,
791
1209
priority, None))
792
1210
1211
# Start communication using the Mandos protocol
1212
# Get protocol number
1213
line = self.request.makefile().readline()
1214
logger.debug("Protocol version: %r", line)
1215
try:
1216
if int(line.strip().split()[0]) > 1:
1217
raise RuntimeError
1218
except (ValueError, IndexError, RuntimeError) as error:
1219
logger.error("Unknown protocol version: %s", error)
1220
return
1221
1222
# Start GnuTLS connection
793
1223
try:
794
1224
session.handshake()
795
except gnutls.errors.GNUTLSError, error:
796
logger.warning(u"Handshake failed: %s", error)
1225
except gnutls.errors.GNUTLSError as error:
1226
logger.warning("Handshake failed: %s", error)
797
1227
# Do not run session.bye() here: the session is not
798
1228
# established. Just abandon the request.
799
1229
return
800
logger.debug(u"Handshake succeeded")
1230
logger.debug("Handshake succeeded")
1231
1232
approval_required = False
801
1233
try:
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)
1234
try:
1235
fpr = self.fingerprint(self.peer_certificate
1236
(session))
1237
except (TypeError,
1238
gnutls.errors.GNUTLSError) as error:
1239
logger.warning("Bad certificate: %s", error)
1240
return
1241
logger.debug("Fingerprint: %s", fpr)
1242
1243
try:
1244
client = ProxyClient(child_pipe, fpr,
1245
self.client_address)
1246
except KeyError:
1247
return
1248
1249
if client.approval_delay:
1250
delay = client.approval_delay
1251
client.approvals_pending += 1
1252
approval_required = True
1253
1254
while True:
1255
if not client.enabled:
1256
logger.info("Client %s is disabled",
1257
client.name)
1258
if self.server.use_dbus:
1259
# Emit D-Bus signal
1260
client.Rejected("Disabled")
1261
return
1262
1263
if client._approved or not client.approval_delay:
1264
#We are approved or approval is disabled
1265
break
1266
elif client._approved is None:
1267
logger.info("Client %s needs approval",
1268
client.name)
1269
if self.server.use_dbus:
1270
# Emit D-Bus signal
1271
client.NeedApproval(
1272
client.approval_delay_milliseconds(),
1273
client.approved_by_default)
1274
else:
1275
logger.warning("Client %s was not approved",
1276
client.name)
1277
if self.server.use_dbus:
1278
# Emit D-Bus signal
1279
client.Rejected("Denied")
1280
return
1281
1282
#wait until timeout or approved
1283
#x = float(client._timedelta_to_milliseconds(delay))
1284
time = datetime.datetime.now()
1285
client.changedstate.acquire()
1286
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1287
client.changedstate.release()
1288
time2 = datetime.datetime.now()
1289
if (time2 - time) >= delay:
1290
if not client.approved_by_default:
1291
logger.warning("Client %s timed out while"
1292
" waiting for approval",
1293
client.name)
1294
if self.server.use_dbus:
1295
# Emit D-Bus signal
1296
client.Rejected("Approval timed out")
1297
return
1298
else:
1299
break
1300
else:
1301
delay -= time2 - time
1302
1303
sent_size = 0
1304
while sent_size < len(client.secret):
1305
try:
1306
sent = session.send(client.secret[sent_size:])
1307
except gnutls.errors.GNUTLSError as error:
1308
logger.warning("gnutls send failed")
1309
return
1310
logger.debug("Sent: %d, remaining: %d",
1311
sent, len(client.secret)
1312
- (sent_size + sent))
1313
sent_size += sent
1314
1315
logger.info("Sending secret to %s", client.name)
1316
# bump the timeout as if seen
1317
client.checked_ok(client.extended_timeout)
1318
if self.server.use_dbus:
1319
# Emit D-Bus signal
1320
client.GotSecret()
808
1321
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()
1322
finally:
1323
if approval_required:
1324
client.approvals_pending -= 1
1325
try:
1326
session.bye()
1327
except gnutls.errors.GNUTLSError as error:
1328
logger.warning("GnuTLS bye failed")
834
1329
835
1330
@staticmethod
836
1331
def peer_certificate(session):
846
1341
.gnutls_certificate_get_peers
847
1342
(session._c_object, ctypes.byref(list_size)))
848
1343
if not bool(cert_list) and list_size.value != 0:
849
raise gnutls.errors.GNUTLSError(u"error getting peer"
850
u" certificate")
1344
raise gnutls.errors.GNUTLSError("error getting peer"
1345
" certificate")
851
1346
if list_size.value == 0:
852
1347
return None
853
1348
cert = cert_list[0]
879
1374
if crtverify.value != 0:
880
1375
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
881
1376
raise (gnutls.errors.CertificateSecurityError
882
(u"Verify failed"))
1377
("Verify failed"))
883
1378
# New buffer for the fingerprint
884
1379
buf = ctypes.create_string_buffer(20)
885
1380
buf_len = ctypes.c_size_t()
892
1387
# Convert the buffer to a Python bytestring
893
1388
fpr = ctypes.string_at(buf, buf_len.value)
894
1389
# Convert the bytestring to hexadecimal notation
895
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1390
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
896
1391
return hex_fpr
897
1392
898
1393
899
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
900
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1394
class MultiprocessingMixIn(object):
1395
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1396
def sub_process_main(self, request, address):
1397
try:
1398
self.finish_request(request, address)
1399
except:
1400
self.handle_error(request, address)
1401
self.close_request(request)
1402
1403
def process_request(self, request, address):
1404
"""Start a new process to process the request."""
1405
multiprocessing.Process(target = self.sub_process_main,
1406
args = (request, address)).start()
1407
1408
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1409
""" adds a pipe to the MixIn """
901
1410
def process_request(self, request, client_address):
902
1411
"""Overrides and wraps the original process_request().
903
1412
904
1413
This function creates a new pipe in self.pipe
905
1414
"""
906
self.pipe = os.pipe()
907
super(ForkingMixInWithPipe,
1415
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1416
1417
super(MultiprocessingMixInWithPipe,
908
1418
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):
1419
self.child_pipe.close()
1420
self.add_pipe(parent_pipe)
1421
1422
def add_pipe(self, parent_pipe):
912
1423
"""Dummy function; override as necessary"""
913
os.close(pipe)
914
915
916
class IPv6_TCPServer(ForkingMixInWithPipe,
1424
raise NotImplementedError
1425
1426
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
917
1427
socketserver.TCPServer, object):
918
1428
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
919
1429
935
1445
bind to an address or port if they were not specified."""
936
1446
if self.interface is not None:
937
1447
if SO_BINDTODEVICE is None:
938
logger.error(u"SO_BINDTODEVICE does not exist;"
939
u" cannot bind to interface %s",
1448
logger.error("SO_BINDTODEVICE does not exist;"
1449
" cannot bind to interface %s",
940
1450
self.interface)
941
1451
else:
942
1452
try:
943
1453
self.socket.setsockopt(socket.SOL_SOCKET,
944
1454
SO_BINDTODEVICE,
945
1455
str(self.interface
946
+ u'\0'))
947
except socket.error, error:
1456
+ '\0'))
1457
except socket.error as error:
948
1458
if error[0] == errno.EPERM:
949
logger.error(u"No permission to"
950
u" bind to interface %s",
1459
logger.error("No permission to"
1460
" bind to interface %s",
951
1461
self.interface)
952
1462
elif error[0] == errno.ENOPROTOOPT:
953
logger.error(u"SO_BINDTODEVICE not available;"
954
u" cannot bind to interface %s",
1463
logger.error("SO_BINDTODEVICE not available;"
1464
" cannot bind to interface %s",
955
1465
self.interface)
956
1466
else:
957
1467
raise
959
1469
if self.server_address[0] or self.server_address[1]:
960
1470
if not self.server_address[0]:
961
1471
if self.address_family == socket.AF_INET6:
962
any_address = u"::" # in6addr_any
1472
any_address = "::" # in6addr_any
963
1473
else:
964
1474
any_address = socket.INADDR_ANY
965
1475
self.server_address = (any_address,
983
1493
clients: set of Client objects
984
1494
gnutls_priority GnuTLS priority string
985
1495
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
989
1496
990
1497
Assumes a gobject.MainLoop event loop.
991
1498
"""
1007
1514
return socketserver.TCPServer.server_activate(self)
1008
1515
def enable(self):
1009
1516
self.enabled = True
1010
def add_pipe(self, pipe):
1517
def add_pipe(self, parent_pipe):
1011
1518
# Call "handle_ipc" for both data and EOF events
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={}):
1519
gobject.io_add_watch(parent_pipe.fileno(),
1520
gobject.IO_IN | gobject.IO_HUP,
1521
functools.partial(self.handle_ipc,
1522
parent_pipe = parent_pipe))
1523
1524
def handle_ipc(self, source, condition, parent_pipe=None,
1525
client_object=None):
1015
1526
condition_names = {
1016
gobject.IO_IN: u"IN", # There is data to read.
1017
gobject.IO_OUT: u"OUT", # Data can be written (without
1527
gobject.IO_IN: "IN", # There is data to read.
1528
gobject.IO_OUT: "OUT", # Data can be written (without
1018
1529
# blocking).
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
1530
gobject.IO_PRI: "PRI", # There is urgent data to read.
1531
gobject.IO_ERR: "ERR", # Error condition.
1532
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1022
1533
# broken, usually for pipes and
1023
1534
# sockets).
1024
1535
}
1026
1537
for cond, name in
1027
1538
condition_names.iteritems()
1028
1539
if cond & condition)
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
1540
# error or the other end of multiprocessing.Pipe has closed
1541
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1542
return False
1543
1544
# Read a request from the child
1545
request = parent_pipe.recv()
1546
command = request[0]
1547
1548
if command == 'init':
1549
fpr = request[1]
1550
address = request[2]
1551
1552
for c in self.clients:
1553
if c.fingerprint == fpr:
1554
client = c
1555
break
1556
else:
1557
logger.info("Client not found for fingerprint: %s, ad"
1558
"dress: %s", fpr, address)
1559
if self.use_dbus:
1560
# Emit D-Bus signal
1561
mandos_dbus_service.ClientNotFound(fpr, address[0])
1562
parent_pipe.send(False)
1563
return False
1564
1565
gobject.io_add_watch(parent_pipe.fileno(),
1566
gobject.IO_IN | gobject.IO_HUP,
1567
functools.partial(self.handle_ipc,
1568
parent_pipe = parent_pipe,
1569
client_object = client))
1570
parent_pipe.send(True)
1571
# remove the old hook in favor of the new above hook on same fileno
1572
return False
1573
if command == 'funcall':
1574
funcname = request[1]
1575
args = request[2]
1576
kwargs = request[3]
1577
1578
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1579
1580
if command == 'getattr':
1581
attrname = request[1]
1582
if callable(client_object.__getattribute__(attrname)):
1583
parent_pipe.send(('function',))
1584
else:
1585
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1586
1587
if command == 'setattr':
1588
attrname = request[1]
1589
value = request[2]
1590
setattr(client_object, attrname, value)
1591
1083
1592
return True
1084
1593
1085
1594
1086
1595
def string_to_delta(interval):
1087
1596
"""Parse a string and return a datetime.timedelta
1088
1597
1089
>>> string_to_delta(u'7d')
1598
>>> string_to_delta('7d')
1090
1599
datetime.timedelta(7)
1091
>>> string_to_delta(u'60s')
1600
>>> string_to_delta('60s')
1092
1601
datetime.timedelta(0, 60)
1093
>>> string_to_delta(u'60m')
1602
>>> string_to_delta('60m')
1094
1603
datetime.timedelta(0, 3600)
1095
>>> string_to_delta(u'24h')
1604
>>> string_to_delta('24h')
1096
1605
datetime.timedelta(1)
1097
>>> string_to_delta(u'1w')
1606
>>> string_to_delta('1w')
1098
1607
datetime.timedelta(7)
1099
>>> string_to_delta(u'5m 30s')
1608
>>> string_to_delta('5m 30s')
1100
1609
datetime.timedelta(0, 330)
1101
1610
"""
1102
1611
timevalue = datetime.timedelta(0)
1104
1613
try:
1105
1614
suffix = unicode(s[-1])
1106
1615
value = int(s[:-1])
1107
if suffix == u"d":
1616
if suffix == "d":
1108
1617
delta = datetime.timedelta(value)
1109
elif suffix == u"s":
1618
elif suffix == "s":
1110
1619
delta = datetime.timedelta(0, value)
1111
elif suffix == u"m":
1620
elif suffix == "m":
1112
1621
delta = datetime.timedelta(0, 0, 0, 0, value)
1113
elif suffix == u"h":
1622
elif suffix == "h":
1114
1623
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1115
elif suffix == u"w":
1624
elif suffix == "w":
1116
1625
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1117
1626
else:
1118
raise ValueError
1119
except (ValueError, IndexError):
1120
raise ValueError
1627
raise ValueError("Unknown suffix %r" % suffix)
1628
except (ValueError, IndexError) as e:
1629
raise ValueError(*(e.args))
1121
1630
timevalue += delta
1122
1631
return timevalue
1123
1632
1129
1638
global if_nametoindex
1130
1639
try:
1131
1640
if_nametoindex = (ctypes.cdll.LoadLibrary
1132
(ctypes.util.find_library(u"c"))
1641
(ctypes.util.find_library("c"))
1133
1642
.if_nametoindex)
1134
1643
except (OSError, AttributeError):
1135
logger.warning(u"Doing if_nametoindex the hard way")
1644
logger.warning("Doing if_nametoindex the hard way")
1136
1645
def if_nametoindex(interface):
1137
1646
"Get an interface index the hard way, i.e. using fcntl()"
1138
1647
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1139
with closing(socket.socket()) as s:
1648
with contextlib.closing(socket.socket()) as s:
1140
1649
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1141
struct.pack(str(u"16s16x"),
1650
struct.pack(str("16s16x"),
1142
1651
interface))
1143
interface_index = struct.unpack(str(u"I"),
1652
interface_index = struct.unpack(str("I"),
1144
1653
ifreq[16:20])[0]
1145
1654
return interface_index
1146
1655
return if_nametoindex(interface)
1154
1663
sys.exit()
1155
1664
os.setsid()
1156
1665
if not nochdir:
1157
os.chdir(u"/")
1666
os.chdir("/")
1158
1667
if os.fork():
1159
1668
sys.exit()
1160
1669
if not noclose:
1162
1671
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1163
1672
if not stat.S_ISCHR(os.fstat(null).st_mode):
1164
1673
raise OSError(errno.ENODEV,
1165
u"/dev/null not a character device")
1674
"%s not a character device"
1675
% os.path.devnull)
1166
1676
os.dup2(null, sys.stdin.fileno())
1167
1677
os.dup2(null, sys.stdout.fileno())
1168
1678
os.dup2(null, sys.stderr.fileno())
1172
1682
1173
1683
def main():
1174
1684
1175
######################################################################
1685
##################################################################
1176
1686
# Parsing of options, both command line and config file
1177
1687
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]
1688
parser = argparse.ArgumentParser()
1689
parser.add_argument("-v", "--version", action="version",
1690
version = "%%(prog)s %s" % version,
1691
help="show version number and exit")
1692
parser.add_argument("-i", "--interface", metavar="IF",
1693
help="Bind to interface IF")
1694
parser.add_argument("-a", "--address",
1695
help="Address to listen for requests on")
1696
parser.add_argument("-p", "--port", type=int,
1697
help="Port number to receive requests on")
1698
parser.add_argument("--check", action="store_true",
1699
help="Run self-test")
1700
parser.add_argument("--debug", action="store_true",
1701
help="Debug mode; run in foreground and log"
1702
" to terminal")
1703
parser.add_argument("--debuglevel", metavar="LEVEL",
1704
help="Debug level for stdout output")
1705
parser.add_argument("--priority", help="GnuTLS"
1706
" priority string (see GnuTLS documentation)")
1707
parser.add_argument("--servicename",
1708
metavar="NAME", help="Zeroconf service name")
1709
parser.add_argument("--configdir",
1710
default="/etc/mandos", metavar="DIR",
1711
help="Directory to search for configuration"
1712
" files")
1713
parser.add_argument("--no-dbus", action="store_false",
1714
dest="use_dbus", help="Do not provide D-Bus"
1715
" system bus interface")
1716
parser.add_argument("--no-ipv6", action="store_false",
1717
dest="use_ipv6", help="Do not use IPv6")
1718
options = parser.parse_args()
1204
1719
1205
1720
if options.check:
1206
1721
import doctest
1208
1723
sys.exit()
1209
1724
1210
1725
# Default values for config file for server-global settings
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",
1726
server_defaults = { "interface": "",
1727
"address": "",
1728
"port": "",
1729
"debug": "False",
1730
"priority":
1731
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1732
"servicename": "Mandos",
1733
"use_dbus": "True",
1734
"use_ipv6": "True",
1735
"debuglevel": "",
1220
1736
}
1221
1737
1222
1738
# Parse config file for server-global settings
1223
1739
server_config = configparser.SafeConfigParser(server_defaults)
1224
1740
del server_defaults
1225
1741
server_config.read(os.path.join(options.configdir,
1226
u"mandos.conf"))
1742
"mandos.conf"))
1227
1743
# Convert the SafeConfigParser object to a dict
1228
1744
server_settings = server_config.defaults()
1229
1745
# Use the appropriate methods on the non-string config options
1230
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1231
server_settings[option] = server_config.getboolean(u"DEFAULT",
1746
for option in ("debug", "use_dbus", "use_ipv6"):
1747
server_settings[option] = server_config.getboolean("DEFAULT",
1232
1748
option)
1233
1749
if server_settings["port"]:
1234
server_settings["port"] = server_config.getint(u"DEFAULT",
1235
u"port")
1750
server_settings["port"] = server_config.getint("DEFAULT",
1751
"port")
1236
1752
del server_config
1237
1753
1238
1754
# Override the settings from the config file with command line
1239
1755
# options, if set.
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"):
1756
for option in ("interface", "address", "port", "debug",
1757
"priority", "servicename", "configdir",
1758
"use_dbus", "use_ipv6", "debuglevel"):
1243
1759
value = getattr(options, option)
1244
1760
if value is not None:
1245
1761
server_settings[option] = value
1253
1769
##################################################################
1254
1770
1255
1771
# For convenience
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":
1772
debug = server_settings["debug"]
1773
debuglevel = server_settings["debuglevel"]
1774
use_dbus = server_settings["use_dbus"]
1775
use_ipv6 = server_settings["use_ipv6"]
1776
1777
if server_settings["servicename"] != "Mandos":
1265
1778
syslogger.setFormatter(logging.Formatter
1266
(u'Mandos (%s) [%%(process)d]:'
1267
u' %%(levelname)s: %%(message)s'
1268
% server_settings[u"servicename"]))
1779
('Mandos (%s) [%%(process)d]:'
1780
' %%(levelname)s: %%(message)s'
1781
% server_settings["servicename"]))
1269
1782
1270
1783
# Parse config file with clients
1271
client_defaults = { u"timeout": u"1h",
1272
u"interval": u"5m",
1273
u"checker": u"fping -q -- %%(host)s",
1274
u"host": u"",
1784
client_defaults = { "timeout": "5m",
1785
"extended_timeout": "15m",
1786
"interval": "2m",
1787
"checker": "fping -q -- %%(host)s",
1788
"host": "",
1789
"approval_delay": "0s",
1790
"approval_duration": "1s",
1275
1791
}
1276
1792
client_config = configparser.SafeConfigParser(client_defaults)
1277
client_config.read(os.path.join(server_settings[u"configdir"],
1278
u"clients.conf"))
1793
client_config.read(os.path.join(server_settings["configdir"],
1794
"clients.conf"))
1279
1795
1280
1796
global mandos_dbus_service
1281
1797
mandos_dbus_service = None
1282
1798
1283
tcp_server = MandosServer((server_settings[u"address"],
1284
server_settings[u"port"]),
1799
tcp_server = MandosServer((server_settings["address"],
1800
server_settings["port"]),
1285
1801
ClientHandler,
1286
interface=server_settings[u"interface"],
1802
interface=(server_settings["interface"]
1803
or None),
1287
1804
use_ipv6=use_ipv6,
1288
1805
gnutls_priority=
1289
server_settings[u"priority"],
1806
server_settings["priority"],
1290
1807
use_dbus=use_dbus)
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)
1808
if not debug:
1809
pidfilename = "/var/run/mandos.pid"
1810
try:
1811
pidfile = open(pidfilename, "w")
1812
except IOError:
1813
logger.error("Could not open file %r", pidfilename)
1296
1814
1297
1815
try:
1298
uid = pwd.getpwnam(u"_mandos").pw_uid
1299
gid = pwd.getpwnam(u"_mandos").pw_gid
1816
uid = pwd.getpwnam("_mandos").pw_uid
1817
gid = pwd.getpwnam("_mandos").pw_gid
1300
1818
except KeyError:
1301
1819
try:
1302
uid = pwd.getpwnam(u"mandos").pw_uid
1303
gid = pwd.getpwnam(u"mandos").pw_gid
1820
uid = pwd.getpwnam("mandos").pw_uid
1821
gid = pwd.getpwnam("mandos").pw_gid
1304
1822
except KeyError:
1305
1823
try:
1306
uid = pwd.getpwnam(u"nobody").pw_uid
1307
gid = pwd.getpwnam(u"nobody").pw_gid
1824
uid = pwd.getpwnam("nobody").pw_uid
1825
gid = pwd.getpwnam("nobody").pw_gid
1308
1826
except KeyError:
1309
1827
uid = 65534
1310
1828
gid = 65534
1311
1829
try:
1312
1830
os.setgid(gid)
1313
1831
os.setuid(uid)
1314
except OSError, error:
1832
except OSError as error:
1315
1833
if error[0] != errno.EPERM:
1316
1834
raise error
1317
1835
1318
# Enable all possible GnuTLS debugging
1836
if not debug and not debuglevel:
1837
syslogger.setLevel(logging.WARNING)
1838
console.setLevel(logging.WARNING)
1839
if debuglevel:
1840
level = getattr(logging, debuglevel.upper())
1841
syslogger.setLevel(level)
1842
console.setLevel(level)
1843
1319
1844
if debug:
1845
# Enable all possible GnuTLS debugging
1846
1320
1847
# "Use a log level over 10 to enable all debugging options."
1321
1848
# - GnuTLS manual
1322
1849
gnutls.library.functions.gnutls_global_set_log_level(11)
1323
1850
1324
1851
@gnutls.library.types.gnutls_log_func
1325
1852
def debug_gnutls(level, string):
1326
logger.debug(u"GnuTLS: %s", string[:-1])
1853
logger.debug("GnuTLS: %s", string[:-1])
1327
1854
1328
1855
(gnutls.library.functions
1329
1856
.gnutls_global_set_log_function(debug_gnutls))
1857
1858
# Redirect stdin so all checkers get /dev/null
1859
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1860
os.dup2(null, sys.stdin.fileno())
1861
if null > 2:
1862
os.close(null)
1863
else:
1864
# No console logging
1865
logger.removeHandler(console)
1866
1867
# Need to fork before connecting to D-Bus
1868
if not debug:
1869
# Close all input and output, do double fork, etc.
1870
daemon()
1330
1871
1331
1872
global main_loop
1332
1873
# From the Avahi example code
1335
1876
bus = dbus.SystemBus()
1336
1877
# End of Avahi example code
1337
1878
if use_dbus:
1338
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1879
try:
1880
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1881
bus, do_not_queue=True)
1882
except dbus.exceptions.NameExistsException as e:
1883
logger.error(unicode(e) + ", disabling D-Bus")
1884
use_dbus = False
1885
server_settings["use_dbus"] = False
1886
tcp_server.use_dbus = False
1339
1887
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1340
service = AvahiService(name = server_settings[u"servicename"],
1341
servicetype = u"_mandos._tcp",
1888
service = AvahiService(name = server_settings["servicename"],
1889
servicetype = "_mandos._tcp",
1342
1890
protocol = protocol, bus = bus)
1343
1891
if server_settings["interface"]:
1344
1892
service.interface = (if_nametoindex
1345
(str(server_settings[u"interface"])))
1893
(str(server_settings["interface"])))
1894
1895
global multiprocessing_manager
1896
multiprocessing_manager = multiprocessing.Manager()
1346
1897
1347
1898
client_class = Client
1348
1899
if use_dbus:
1349
1900
client_class = functools.partial(ClientDBus, bus = bus)
1901
def client_config_items(config, section):
1902
special_settings = {
1903
"approved_by_default":
1904
lambda: config.getboolean(section,
1905
"approved_by_default"),
1906
}
1907
for name, value in config.items(section):
1908
try:
1909
yield (name, special_settings[name]())
1910
except KeyError:
1911
yield (name, value)
1912
1350
1913
tcp_server.clients.update(set(
1351
1914
client_class(name = section,
1352
config= dict(client_config.items(section)))
1915
config= dict(client_config_items(
1916
client_config, section)))
1353
1917
for section in client_config.sections()))
1354
1918
if not tcp_server.clients:
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()
1919
logger.warning("No clients defined")
1385
1920
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
1393
1921
if not debug:
1922
try:
1923
with pidfile:
1924
pid = os.getpid()
1925
pidfile.write(str(pid) + "\n".encode("utf-8"))
1926
del pidfile
1927
except IOError:
1928
logger.error("Could not write to file %r with PID %d",
1929
pidfilename, pid)
1930
except NameError:
1931
# "pidfile" was never created
1932
pass
1933
del pidfilename
1934
1394
1935
signal.signal(signal.SIGINT, signal.SIG_IGN)
1936
1395
1937
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1396
1938
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1397
1939
1399
1941
class MandosDBusService(dbus.service.Object):
1400
1942
"""A D-Bus proxy object"""
1401
1943
def __init__(self):
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")
1944
dbus.service.Object.__init__(self, bus, "/")
1945
_interface = "se.bsnet.fukt.Mandos"
1946
1947
@dbus.service.signal(_interface, signature="o")
1948
def ClientAdded(self, objpath):
1949
"D-Bus signal"
1950
pass
1951
1952
@dbus.service.signal(_interface, signature="ss")
1953
def ClientNotFound(self, fingerprint, address):
1954
"D-Bus signal"
1955
pass
1956
1957
@dbus.service.signal(_interface, signature="os")
1416
1958
def ClientRemoved(self, objpath, name):
1417
1959
"D-Bus signal"
1418
1960
pass
1419
1961
1420
@dbus.service.method(_interface, out_signature=u"ao")
1962
@dbus.service.method(_interface, out_signature="ao")
1421
1963
def GetAllClients(self):
1422
1964
"D-Bus method"
1423
1965
return dbus.Array(c.dbus_object_path
1424
1966
for c in tcp_server.clients)
1425
1967
1426
1968
@dbus.service.method(_interface,
1427
out_signature=u"a{oa{sv}}")
1969
out_signature="a{oa{sv}}")
1428
1970
def GetAllClientsWithProperties(self):
1429
1971
"D-Bus method"
1430
1972
return dbus.Dictionary(
1431
((c.dbus_object_path, c.GetAllProperties())
1973
((c.dbus_object_path, c.GetAll(""))
1432
1974
for c in tcp_server.clients),
1433
signature=u"oa{sv}")
1975
signature="oa{sv}")
1434
1976
1435
@dbus.service.method(_interface, in_signature=u"o")
1977
@dbus.service.method(_interface, in_signature="o")
1436
1978
def RemoveClient(self, object_path):
1437
1979
"D-Bus method"
1438
1980
for c in tcp_server.clients:
1440
1982
tcp_server.clients.remove(c)
1441
1983
c.remove_from_connection()
1442
1984
# Don't signal anything except ClientRemoved
1443
c.disable(signal=False)
1985
c.disable(quiet=True)
1444
1986
# Emit D-Bus signal
1445
1987
self.ClientRemoved(object_path, c.name)
1446
1988
return
1447
raise KeyError
1989
raise KeyError(object_path)
1448
1990
1449
1991
del _interface
1450
1992
1451
1993
mandos_dbus_service = MandosDBusService()
1452
1994
1995
def cleanup():
1996
"Cleanup function; run on exit"
1997
service.cleanup()
1998
1999
while tcp_server.clients:
2000
client = tcp_server.clients.pop()
2001
if use_dbus:
2002
client.remove_from_connection()
2003
client.disable_hook = None
2004
# Don't signal anything except ClientRemoved
2005
client.disable(quiet=True)
2006
if use_dbus:
2007
# Emit D-Bus signal
2008
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2009
client.name)
2010
2011
atexit.register(cleanup)
2012
1453
2013
for client in tcp_server.clients:
1454
2014
if use_dbus:
1455
2015
# Emit D-Bus signal
1456
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1457
client.GetAllProperties())
2016
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1458
2017
client.enable()
1459
2018
1460
2019
tcp_server.enable()
1463
2022
# Find out what port we got
1464
2023
service.port = tcp_server.socket.getsockname()[1]
1465
2024
if use_ipv6:
1466
logger.info(u"Now listening on address %r, port %d,"
2025
logger.info("Now listening on address %r, port %d,"
1467
2026
" flowinfo %d, scope_id %d"
1468
2027
% tcp_server.socket.getsockname())
1469
2028
else: # IPv4
1470
logger.info(u"Now listening on address %r, port %d"
2029
logger.info("Now listening on address %r, port %d"
1471
2030
% tcp_server.socket.getsockname())
1472
2031
1473
2032
#service.interface = tcp_server.socket.getsockname()[3]
1476
2035
# From the Avahi example code
1477
2036
try:
1478
2037
service.activate()
1479
except dbus.exceptions.DBusException, error:
1480
logger.critical(u"DBusException: %s", error)
2038
except dbus.exceptions.DBusException as error:
2039
logger.critical("DBusException: %s", error)
2040
cleanup()
1481
2041
sys.exit(1)
1482
2042
# End of Avahi example code
1483
2043
1486
2046
(tcp_server.handle_request
1487
2047
(*args[2:], **kwargs) or True))
1488
2048
1489
logger.debug(u"Starting main loop")
2049
logger.debug("Starting main loop")
1490
2050
main_loop.run()
1491
except AvahiError, error:
1492
logger.critical(u"AvahiError: %s", error)
2051
except AvahiError as error:
2052
logger.critical("AvahiError: %s", error)
2053
cleanup()
1493
2054
sys.exit(1)
1494
2055
except KeyboardInterrupt:
1495
2056
if debug:
1496
print >> sys.stderr
1497
logger.debug(u"Server received KeyboardInterrupt")
1498
logger.debug(u"Server exiting")
2057
print("", file=sys.stderr)
2058
logger.debug("Server received KeyboardInterrupt")
2059
logger.debug("Server exiting")
2060
# Must run before the D-Bus bus name gets deregistered
2061
cleanup()
1499
2062
1500
2063
if __name__ == '__main__':
1501
2064
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0