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- Committer: Teddy Hogeborn
- Date: 2011-10-08 21:13:46 UTC
- mfrom: (510 trunk)
- mto: (505.2.5 mandos-client-network-hooks)
- mto: This revision was merged to the branch mainline in revision 511.
- Revision ID: teddy@recompile.se-20111008211346-z1r0xsk8ak8b04wf
* debian/source/local-options: New; contains "--single-debian-patch".
- 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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12
#
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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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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@fukt.bsnet.se>.
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# Contact the authors at <mandos@recompile.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 types
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import dbus
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import dbus.service
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from dbus.mainloop.glib import DBusGMainLoop
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import ctypes
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import ctypes.util
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import xml.dom.minidom
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import inspect
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try:
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SO_BINDTODEVICE = socket.SO_BINDTODEVICE
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SO_BINDTODEVICE = None
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version = "1.0.10"
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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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97
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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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121
Attributes:
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interface: integer; avahi.IF_UNSPEC or an interface index.
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123
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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137
"""
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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
164
.GetAlternativeServiceName(self.name))
165
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'
168
('Mandos (%s) [%%(process)d]:'
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' %%(levelname)s: %%(message)s'
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170
% self.name))
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self.remove()
163
self.add()
172
try:
173
self.add()
174
except dbus.exceptions.DBusException as error:
175
logger.critical("DBusException: %s", error)
176
self.cleanup()
177
os._exit(1)
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self.rename_count += 1
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179
def remove(self):
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"""Derived from the Avahi example code"""
181
if self.entry_group_state_changed_match is not None:
182
self.entry_group_state_changed_match.remove()
183
self.entry_group_state_changed_match = None
167
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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"""
188
self.remove()
171
189
if self.group is None:
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190
self.group = dbus.Interface(
173
191
self.bus.get_object(avahi.DBUS_NAME,
174
192
self.server.EntryGroupNew()),
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193
avahi.DBUS_INTERFACE_ENTRY_GROUP)
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self.group.connect_to_signal('StateChanged',
177
self.entry_group_state_changed)
178
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
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self.entry_group_state_changed_match = (
195
self.group.connect_to_signal(
196
'StateChanged', self .entry_group_state_changed))
197
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
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198
self.name, self.type)
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self.group.AddService(
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200
self.interface,
188
207
self.group.Commit()
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def entry_group_state_changed(self, state, error):
190
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"""Derived from the Avahi example code"""
191
logger.debug(u"Avahi state change: %i", state)
210
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.")
213
logger.debug("Zeroconf service established.")
195
214
elif state == avahi.ENTRY_GROUP_COLLISION:
196
logger.warning(u"Zeroconf service name collision.")
215
logger.info("Zeroconf service name collision.")
197
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self.rename()
198
217
elif state == avahi.ENTRY_GROUP_FAILURE:
199
logger.critical(u"Avahi: Error in group state changed %s",
218
logger.critical("Avahi: Error in group state changed %s",
200
219
unicode(error))
201
raise AvahiGroupError(u"State changed: %s"
220
raise AvahiGroupError("State changed: %s"
202
221
% unicode(error))
203
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def cleanup(self):
204
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"""Derived from the Avahi example code"""
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if self.group is not None:
206
self.group.Free()
225
try:
226
self.group.Free()
227
except (dbus.exceptions.UnknownMethodException,
228
dbus.exceptions.DBusException) as e:
229
pass
207
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self.group = None
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def server_state_changed(self, state):
231
self.remove()
232
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")
212
self.remove()
234
logger.debug("Avahi server state change: %i", state)
235
bad_states = { avahi.SERVER_INVALID:
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"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" }
242
if state in bad_states:
243
if bad_states[state] is not None:
244
if error is None:
245
logger.error(bad_states[state])
246
else:
247
logger.error(bad_states[state] + ": %r", error)
248
self.cleanup()
213
249
elif state == avahi.SERVER_RUNNING:
214
250
self.add()
251
else:
252
if error is None:
253
logger.debug("Unknown state: %r", state)
254
else:
255
logger.debug("Unknown state: %r: %r", state, error)
215
256
def activate(self):
216
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"""Derived from the Avahi example code"""
217
258
if self.server is None:
218
259
self.server = dbus.Interface(
219
260
self.bus.get_object(avahi.DBUS_NAME,
220
avahi.DBUS_PATH_SERVER),
261
avahi.DBUS_PATH_SERVER,
262
follow_name_owner_changes=True),
221
263
avahi.DBUS_INTERFACE_SERVER)
222
self.server.connect_to_signal(u"StateChanged",
264
self.server.connect_to_signal("StateChanged",
223
265
self.server_state_changed)
224
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self.server_state_changed(self.server.GetState())
225
267
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def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
274
227
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class Client(object):
228
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"""A representation of a client host served by this server.
229
277
230
278
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
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last_enabled: datetime.datetime(); (UTC)
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enabled: bool()
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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
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disable_hook: If set, called by disable() as disable_hook(self)
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_approved: bool(); 'None' if not yet approved/disapproved
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approval_delay: datetime.timedelta(); Time to wait for approval
281
approval_duration: datetime.timedelta(); Duration of one approval
245
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checker: subprocess.Popen(); a running checker process used
246
283
to see if the client lives.
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'None' if no process is running.
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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
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client lives. %() expansions are done at
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checker_callback_tag: a gobject event source tag, or None
286
checker_command: string; External command which is run to check
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if client lives. %() expansions are done at
253
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runtime with vars(self) as dict, so that for
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289
instance %(name)s can be used in the command.
290
checker_initiator_tag: a gobject event source tag, or None
291
created: datetime.datetime(); (UTC) object creation
255
292
current_checker_command: string; current running checker_command
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disable_hook: If set, called by disable() as disable_hook(self)
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disable_initiator_tag: a gobject event source tag, or None
295
enabled: bool()
296
fingerprint: string (40 or 32 hexadecimal digits); used to
297
uniquely identify the client
298
host: string; available for use by the checker command
299
interval: datetime.timedelta(); How often to start a new checker
300
last_approval_request: datetime.datetime(); (UTC) or None
301
last_checked_ok: datetime.datetime(); (UTC) or None
302
last_enabled: datetime.datetime(); (UTC)
303
name: string; from the config file, used in log messages and
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D-Bus identifiers
305
secret: bytestring; sent verbatim (over TLS) to client
306
timeout: datetime.timedelta(); How long from last_checked_ok
307
until this client is disabled
308
extended_timeout: extra long timeout when password has been sent
309
runtime_expansions: Allowed attributes for runtime expansion.
310
expires: datetime.datetime(); time (UTC) when a client will be
311
disabled, or None
256
312
"""
257
313
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@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))
314
runtime_expansions = ("approval_delay", "approval_duration",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
317
"last_enabled", "name", "timeout")
264
318
265
319
def timeout_milliseconds(self):
266
320
"Return the 'timeout' attribute in milliseconds"
267
return self._datetime_to_milliseconds(self.timeout)
321
return _timedelta_to_milliseconds(self.timeout)
322
323
def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
325
return _timedelta_to_milliseconds(self.extended_timeout)
268
326
269
327
def interval_milliseconds(self):
270
328
"Return the 'interval' attribute in milliseconds"
271
return self._datetime_to_milliseconds(self.interval)
329
return _timedelta_to_milliseconds(self.interval)
330
331
def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
272
333
273
334
def __init__(self, name = None, disable_hook=None, config=None):
274
335
"""Note: the 'checker' key in 'config' sets the
277
338
self.name = name
278
339
if config is None:
279
340
config = {}
280
logger.debug(u"Creating client %r", self.name)
341
logger.debug("Creating client %r", self.name)
281
342
# Uppercase and remove spaces from fingerprint for later
282
343
# comparison purposes with return value from the fingerprint()
283
344
# 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:
345
self.fingerprint = (config["fingerprint"].upper()
346
.replace(" ", ""))
347
logger.debug(" Fingerprint: %s", self.fingerprint)
348
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
350
elif "secfile" in config:
351
with open(os.path.expanduser(os.path.expandvars
352
(config["secfile"])),
353
"rb") as secfile:
293
354
self.secret = secfile.read()
294
355
else:
295
raise TypeError(u"No secret or secfile for client %s"
356
raise TypeError("No secret or secfile for client %s"
296
357
% self.name)
297
self.host = config.get(u"host", u"")
358
self.host = config.get("host", "")
298
359
self.created = datetime.datetime.utcnow()
299
360
self.enabled = False
361
self.last_approval_request = None
300
362
self.last_enabled = None
301
363
self.last_checked_ok = None
302
self.timeout = string_to_delta(config[u"timeout"])
303
self.interval = string_to_delta(config[u"interval"])
364
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
self.interval = string_to_delta(config["interval"])
304
368
self.disable_hook = disable_hook
305
369
self.checker = None
306
370
self.checker_initiator_tag = None
307
371
self.disable_initiator_tag = None
372
self.expires = None
308
373
self.checker_callback_tag = None
309
self.checker_command = config[u"checker"]
374
self.checker_command = config["checker"]
310
375
self.current_checker_command = None
311
376
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
379
True)
380
self.approvals_pending = 0
381
self.approval_delay = string_to_delta(
382
config["approval_delay"])
383
self.approval_duration = string_to_delta(
384
config["approval_duration"])
385
self.changedstate = (multiprocessing_manager
386
.Condition(multiprocessing_manager
387
.Lock()))
388
389
def send_changedstate(self):
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
312
393
313
394
def enable(self):
314
395
"""Start this client's checker and timeout hooks"""
315
if getattr(self, u"enabled", False):
396
if getattr(self, "enabled", False):
316
397
# Already enabled
317
398
return
318
self.last_enabled = datetime.datetime.utcnow()
399
self.send_changedstate()
319
400
# Schedule a new checker to be started an 'interval' from now,
320
401
# and every interval from then on.
321
402
self.checker_initiator_tag = (gobject.timeout_add
322
403
(self.interval_milliseconds(),
323
404
self.start_checker))
324
# Also start a new checker *right now*.
325
self.start_checker()
326
405
# Schedule a disable() when 'timeout' has passed
406
self.expires = datetime.datetime.utcnow() + self.timeout
327
407
self.disable_initiator_tag = (gobject.timeout_add
328
408
(self.timeout_milliseconds(),
329
409
self.disable))
330
410
self.enabled = True
411
self.last_enabled = datetime.datetime.utcnow()
412
# Also start a new checker *right now*.
413
self.start_checker()
331
414
332
def disable(self):
415
def disable(self, quiet=True):
333
416
"""Disable this client."""
334
417
if not getattr(self, "enabled", False):
335
418
return False
336
logger.info(u"Disabling client %s", self.name)
337
if getattr(self, u"disable_initiator_tag", False):
419
if not quiet:
420
self.send_changedstate()
421
if not quiet:
422
logger.info("Disabling client %s", self.name)
423
if getattr(self, "disable_initiator_tag", False):
338
424
gobject.source_remove(self.disable_initiator_tag)
339
425
self.disable_initiator_tag = None
340
if getattr(self, u"checker_initiator_tag", False):
426
self.expires = None
427
if getattr(self, "checker_initiator_tag", False):
341
428
gobject.source_remove(self.checker_initiator_tag)
342
429
self.checker_initiator_tag = None
343
430
self.stop_checker()
358
445
if os.WIFEXITED(condition):
359
446
exitstatus = os.WEXITSTATUS(condition)
360
447
if exitstatus == 0:
361
logger.info(u"Checker for %(name)s succeeded",
448
logger.info("Checker for %(name)s succeeded",
362
449
vars(self))
363
450
self.checked_ok()
364
451
else:
365
logger.info(u"Checker for %(name)s failed",
452
logger.info("Checker for %(name)s failed",
366
453
vars(self))
367
454
else:
368
logger.warning(u"Checker for %(name)s crashed?",
455
logger.warning("Checker for %(name)s crashed?",
369
456
vars(self))
370
457
371
def checked_ok(self):
458
def checked_ok(self, timeout=None):
372
459
"""Bump up the timeout for this client.
373
460
374
461
This should only be called when the client has been seen,
375
462
alive and well.
376
463
"""
464
if timeout is None:
465
timeout = self.timeout
377
466
self.last_checked_ok = datetime.datetime.utcnow()
378
467
gobject.source_remove(self.disable_initiator_tag)
468
self.expires = datetime.datetime.utcnow() + timeout
379
469
self.disable_initiator_tag = (gobject.timeout_add
380
(self.timeout_milliseconds(),
381
self.disable))
470
(_timedelta_to_milliseconds
471
(timeout), self.disable))
472
473
def need_approval(self):
474
self.last_approval_request = datetime.datetime.utcnow()
382
475
383
476
def start_checker(self):
384
477
"""Start a new checker subprocess if one is not running.
391
484
# client would inevitably timeout, since no checker would get
392
485
# a chance to run to completion. If we instead leave running
393
486
# 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.
487
# than 'timeout' for the client to be disabled, which is as it
488
# should be.
396
489
397
490
# If a checker exists, make sure it is not a zombie
398
if self.checker is not None:
491
try:
399
492
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
493
except (AttributeError, OSError) as error:
494
if (isinstance(error, OSError)
495
and error.errno != errno.ECHILD):
496
raise error
497
else:
400
498
if pid:
401
logger.warning(u"Checker was a zombie")
499
logger.warning("Checker was a zombie")
402
500
gobject.source_remove(self.checker_callback_tag)
403
501
self.checker_callback(pid, status,
404
502
self.current_checker_command)
409
507
command = self.checker_command % self.host
410
508
except TypeError:
411
509
# 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())
510
escaped_attrs = dict(
511
(attr,
512
re.escape(unicode(str(getattr(self, attr, "")),
513
errors=
514
'replace')))
515
for attr in
516
self.runtime_expansions)
517
418
518
try:
419
519
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)
520
except TypeError as error:
521
logger.error('Could not format string "%s":'
522
' %s', self.checker_command, error)
423
523
return True # Try again later
424
524
self.current_checker_command = command
425
525
try:
426
logger.info(u"Starting checker %r for %s",
526
logger.info("Starting checker %r for %s",
427
527
command, self.name)
428
528
# We don't need to redirect stdout and stderr, since
429
529
# in normal mode, that is already done by daemon(),
431
531
# always replaced by /dev/null.)
432
532
self.checker = subprocess.Popen(command,
433
533
close_fds=True,
434
shell=True, cwd=u"/")
534
shell=True, cwd="/")
435
535
self.checker_callback_tag = (gobject.child_watch_add
436
536
(self.checker.pid,
437
537
self.checker_callback,
442
542
if pid:
443
543
gobject.source_remove(self.checker_callback_tag)
444
544
self.checker_callback(pid, status, command)
445
except OSError, error:
446
logger.error(u"Failed to start subprocess: %s",
545
except OSError as error:
546
logger.error("Failed to start subprocess: %s",
447
547
error)
448
548
# Re-run this periodically if run by gobject.timeout_add
449
549
return True
453
553
if self.checker_callback_tag:
454
554
gobject.source_remove(self.checker_callback_tag)
455
555
self.checker_callback_tag = None
456
if getattr(self, u"checker", None) is None:
556
if getattr(self, "checker", None) is None:
457
557
return
458
logger.debug(u"Stopping checker for %(name)s", vars(self))
558
logger.debug("Stopping checker for %(name)s", vars(self))
459
559
try:
460
560
os.kill(self.checker.pid, signal.SIGTERM)
461
#os.sleep(0.5)
561
#time.sleep(0.5)
462
562
#if self.checker.poll() is None:
463
563
# os.kill(self.checker.pid, signal.SIGKILL)
464
except OSError, error:
564
except OSError as error:
465
565
if error.errno != errno.ESRCH: # No such process
466
566
raise
467
567
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):
568
569
570
def dbus_service_property(dbus_interface, signature="v",
571
access="readwrite", byte_arrays=False):
572
"""Decorators for marking methods of a DBusObjectWithProperties to
573
become properties on the D-Bus.
574
575
The decorated method will be called with no arguments by "Get"
576
and with one argument by "Set".
577
578
The parameters, where they are supported, are the same as
579
dbus.service.method, except there is only "signature", since the
580
type from Get() and the type sent to Set() is the same.
581
"""
582
# Encoding deeply encoded byte arrays is not supported yet by the
583
# "Set" method, so we fail early here:
584
if byte_arrays and signature != "ay":
585
raise ValueError("Byte arrays not supported for non-'ay'"
586
" signature %r" % signature)
587
def decorator(func):
588
func._dbus_is_property = True
589
func._dbus_interface = dbus_interface
590
func._dbus_signature = signature
591
func._dbus_access = access
592
func._dbus_name = func.__name__
593
if func._dbus_name.endswith("_dbus_property"):
594
func._dbus_name = func._dbus_name[:-14]
595
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
596
return func
597
return decorator
598
599
600
class DBusPropertyException(dbus.exceptions.DBusException):
601
"""A base class for D-Bus property-related exceptions
602
"""
603
def __unicode__(self):
604
return unicode(str(self))
605
606
607
class DBusPropertyAccessException(DBusPropertyException):
608
"""A property's access permissions disallows an operation.
609
"""
610
pass
611
612
613
class DBusPropertyNotFound(DBusPropertyException):
614
"""An attempt was made to access a non-existing property.
615
"""
616
pass
617
618
619
class DBusObjectWithProperties(dbus.service.Object):
620
"""A D-Bus object with properties.
621
622
Classes inheriting from this can use the dbus_service_property
623
decorator to expose methods as D-Bus properties. It exposes the
624
standard Get(), Set(), and GetAll() methods on the D-Bus.
625
"""
626
627
@staticmethod
628
def _is_dbus_property(obj):
629
return getattr(obj, "_dbus_is_property", False)
630
631
def _get_all_dbus_properties(self):
632
"""Returns a generator of (name, attribute) pairs
633
"""
634
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
635
for cls in self.__class__.__mro__
636
for name, prop in
637
inspect.getmembers(cls, self._is_dbus_property))
638
639
def _get_dbus_property(self, interface_name, property_name):
640
"""Returns a bound method if one exists which is a D-Bus
641
property with the specified name and interface.
642
"""
643
for cls in self.__class__.__mro__:
644
for name, value in (inspect.getmembers
645
(cls, self._is_dbus_property)):
646
if (value._dbus_name == property_name
647
and value._dbus_interface == interface_name):
648
return value.__get__(self)
649
650
# No such property
651
raise DBusPropertyNotFound(self.dbus_object_path + ":"
652
+ interface_name + "."
653
+ property_name)
654
655
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
656
out_signature="v")
657
def Get(self, interface_name, property_name):
658
"""Standard D-Bus property Get() method, see D-Bus standard.
659
"""
660
prop = self._get_dbus_property(interface_name, property_name)
661
if prop._dbus_access == "write":
662
raise DBusPropertyAccessException(property_name)
663
value = prop()
664
if not hasattr(value, "variant_level"):
665
return value
666
return type(value)(value, variant_level=value.variant_level+1)
667
668
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
669
def Set(self, interface_name, property_name, value):
670
"""Standard D-Bus property Set() method, see D-Bus standard.
671
"""
672
prop = self._get_dbus_property(interface_name, property_name)
673
if prop._dbus_access == "read":
674
raise DBusPropertyAccessException(property_name)
675
if prop._dbus_get_args_options["byte_arrays"]:
676
# The byte_arrays option is not supported yet on
677
# signatures other than "ay".
678
if prop._dbus_signature != "ay":
679
raise ValueError
680
value = dbus.ByteArray(''.join(unichr(byte)
681
for byte in value))
682
prop(value)
683
684
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
685
out_signature="a{sv}")
686
def GetAll(self, interface_name):
687
"""Standard D-Bus property GetAll() method, see D-Bus
688
standard.
689
690
Note: Will not include properties with access="write".
691
"""
692
all = {}
693
for name, prop in self._get_all_dbus_properties():
694
if (interface_name
695
and interface_name != prop._dbus_interface):
696
# Interface non-empty but did not match
697
continue
698
# Ignore write-only properties
699
if prop._dbus_access == "write":
700
continue
701
value = prop()
702
if not hasattr(value, "variant_level"):
703
all[name] = value
704
continue
705
all[name] = type(value)(value, variant_level=
706
value.variant_level+1)
707
return dbus.Dictionary(all, signature="sv")
708
709
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
710
out_signature="s",
711
path_keyword='object_path',
712
connection_keyword='connection')
713
def Introspect(self, object_path, connection):
714
"""Standard D-Bus method, overloaded to insert property tags.
715
"""
716
xmlstring = dbus.service.Object.Introspect(self, object_path,
717
connection)
718
try:
719
document = xml.dom.minidom.parseString(xmlstring)
720
def make_tag(document, name, prop):
721
e = document.createElement("property")
722
e.setAttribute("name", name)
723
e.setAttribute("type", prop._dbus_signature)
724
e.setAttribute("access", prop._dbus_access)
725
return e
726
for if_tag in document.getElementsByTagName("interface"):
727
for tag in (make_tag(document, name, prop)
728
for name, prop
729
in self._get_all_dbus_properties()
730
if prop._dbus_interface
731
== if_tag.getAttribute("name")):
732
if_tag.appendChild(tag)
733
# Add the names to the return values for the
734
# "org.freedesktop.DBus.Properties" methods
735
if (if_tag.getAttribute("name")
736
== "org.freedesktop.DBus.Properties"):
737
for cn in if_tag.getElementsByTagName("method"):
738
if cn.getAttribute("name") == "Get":
739
for arg in cn.getElementsByTagName("arg"):
740
if (arg.getAttribute("direction")
741
== "out"):
742
arg.setAttribute("name", "value")
743
elif cn.getAttribute("name") == "GetAll":
744
for arg in cn.getElementsByTagName("arg"):
745
if (arg.getAttribute("direction")
746
== "out"):
747
arg.setAttribute("name", "props")
748
xmlstring = document.toxml("utf-8")
749
document.unlink()
750
except (AttributeError, xml.dom.DOMException,
751
xml.parsers.expat.ExpatError) as error:
752
logger.error("Failed to override Introspection method",
753
error)
754
return xmlstring
755
756
757
def datetime_to_dbus (dt, variant_level=0):
758
"""Convert a UTC datetime.datetime() to a D-Bus type."""
759
if dt is None:
760
return dbus.String("", variant_level = variant_level)
761
return dbus.String(dt.isoformat(),
762
variant_level=variant_level)
763
764
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
765
.__metaclass__):
766
"""Applied to an empty subclass of a D-Bus object, this metaclass
767
will add additional D-Bus attributes matching a certain pattern.
768
"""
769
def __new__(mcs, name, bases, attr):
770
# Go through all the base classes which could have D-Bus
771
# methods, signals, or properties in them
772
for base in (b for b in bases
773
if issubclass(b, dbus.service.Object)):
774
# Go though all attributes of the base class
775
for attrname, attribute in inspect.getmembers(base):
776
# Ignore non-D-Bus attributes, and D-Bus attributes
777
# with the wrong interface name
778
if (not hasattr(attribute, "_dbus_interface")
779
or not attribute._dbus_interface
780
.startswith("se.recompile.Mandos")):
781
continue
782
# Create an alternate D-Bus interface name based on
783
# the current name
784
alt_interface = (attribute._dbus_interface
785
.replace("se.recompile.Mandos",
786
"se.bsnet.fukt.Mandos"))
787
# Is this a D-Bus signal?
788
if getattr(attribute, "_dbus_is_signal", False):
789
# Extract the original non-method function by
790
# black magic
791
nonmethod_func = (dict(
792
zip(attribute.func_code.co_freevars,
793
attribute.__closure__))["func"]
794
.cell_contents)
795
# Create a new, but exactly alike, function
796
# object, and decorate it to be a new D-Bus signal
797
# with the alternate D-Bus interface name
798
new_function = (dbus.service.signal
799
(alt_interface,
800
attribute._dbus_signature)
801
(types.FunctionType(
802
nonmethod_func.func_code,
803
nonmethod_func.func_globals,
804
nonmethod_func.func_name,
805
nonmethod_func.func_defaults,
806
nonmethod_func.func_closure)))
807
# Define a creator of a function to call both the
808
# old and new functions, so both the old and new
809
# signals gets sent when the function is called
810
def fixscope(func1, func2):
811
"""This function is a scope container to pass
812
func1 and func2 to the "call_both" function
813
outside of its arguments"""
814
def call_both(*args, **kwargs):
815
"""This function will emit two D-Bus
816
signals by calling func1 and func2"""
817
func1(*args, **kwargs)
818
func2(*args, **kwargs)
819
return call_both
820
# Create the "call_both" function and add it to
821
# the class
822
attr[attrname] = fixscope(attribute,
823
new_function)
824
# Is this a D-Bus method?
825
elif getattr(attribute, "_dbus_is_method", False):
826
# Create a new, but exactly alike, function
827
# object. Decorate it to be a new D-Bus method
828
# with the alternate D-Bus interface name. Add it
829
# to the class.
830
attr[attrname] = (dbus.service.method
831
(alt_interface,
832
attribute._dbus_in_signature,
833
attribute._dbus_out_signature)
834
(types.FunctionType
835
(attribute.func_code,
836
attribute.func_globals,
837
attribute.func_name,
838
attribute.func_defaults,
839
attribute.func_closure)))
840
# Is this a D-Bus property?
841
elif getattr(attribute, "_dbus_is_property", False):
842
# Create a new, but exactly alike, function
843
# object, and decorate it to be a new D-Bus
844
# property with the alternate D-Bus interface
845
# name. Add it to the class.
846
attr[attrname] = (dbus_service_property
847
(alt_interface,
848
attribute._dbus_signature,
849
attribute._dbus_access,
850
attribute
851
._dbus_get_args_options
852
["byte_arrays"])
853
(types.FunctionType
854
(attribute.func_code,
855
attribute.func_globals,
856
attribute.func_name,
857
attribute.func_defaults,
858
attribute.func_closure)))
859
return type.__new__(mcs, name, bases, attr)
860
861
class ClientDBus(Client, DBusObjectWithProperties):
481
862
"""A Client class using D-Bus
482
863
483
864
Attributes:
484
865
dbus_object_path: dbus.ObjectPath
485
866
bus: dbus.SystemBus()
486
867
"""
868
869
runtime_expansions = (Client.runtime_expansions
870
+ ("dbus_object_path",))
871
487
872
# dbus.service.Object doesn't use super(), so we can't either.
488
873
489
874
def __init__(self, bus = None, *args, **kwargs):
875
self._approvals_pending = 0
490
876
self.bus = bus
491
877
Client.__init__(self, *args, **kwargs)
492
878
# Only now, when this client is initialized, can it show up on
493
879
# the D-Bus
880
client_object_name = unicode(self.name).translate(
881
{ord("."): ord("_"),
882
ord("-"): ord("_")})
494
883
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
884
("/clients/" + client_object_name))
885
DBusObjectWithProperties.__init__(self, self.bus,
886
self.dbus_object_path)
887
888
def notifychangeproperty(transform_func,
889
dbus_name, type_func=lambda x: x,
890
variant_level=1):
891
""" Modify a variable so that it's a property which announces
892
its changes to DBus.
893
894
transform_fun: Function that takes a value and transforms it
895
to a D-Bus type.
896
dbus_name: D-Bus name of the variable
897
type_func: Function that transform the value before sending it
898
to the D-Bus. Default: no transform
899
variant_level: D-Bus variant level. Default: 1
900
"""
901
attrname = "_{0}".format(dbus_name)
902
def setter(self, value):
903
if hasattr(self, "dbus_object_path"):
904
if (not hasattr(self, attrname) or
905
type_func(getattr(self, attrname, None))
906
!= type_func(value)):
907
dbus_value = transform_func(type_func(value),
908
variant_level)
909
self.PropertyChanged(dbus.String(dbus_name),
910
dbus_value)
911
setattr(self, attrname, value)
912
913
return property(lambda self: getattr(self, attrname), setter)
914
915
916
expires = notifychangeproperty(datetime_to_dbus, "Expires")
917
approvals_pending = notifychangeproperty(dbus.Boolean,
918
"ApprovalPending",
919
type_func = bool)
920
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
921
last_enabled = notifychangeproperty(datetime_to_dbus,
922
"LastEnabled")
923
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
924
type_func = lambda checker:
925
checker is not None)
926
last_checked_ok = notifychangeproperty(datetime_to_dbus,
927
"LastCheckedOK")
928
last_approval_request = notifychangeproperty(
929
datetime_to_dbus, "LastApprovalRequest")
930
approved_by_default = notifychangeproperty(dbus.Boolean,
931
"ApprovedByDefault")
932
approval_delay = notifychangeproperty(dbus.UInt16,
933
"ApprovalDelay",
934
type_func =
935
_timedelta_to_milliseconds)
936
approval_duration = notifychangeproperty(
937
dbus.UInt16, "ApprovalDuration",
938
type_func = _timedelta_to_milliseconds)
939
host = notifychangeproperty(dbus.String, "Host")
940
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
941
type_func =
942
_timedelta_to_milliseconds)
943
extended_timeout = notifychangeproperty(
944
dbus.UInt16, "ExtendedTimeout",
945
type_func = _timedelta_to_milliseconds)
946
interval = notifychangeproperty(dbus.UInt16,
947
"Interval",
948
type_func =
949
_timedelta_to_milliseconds)
950
checker_command = notifychangeproperty(dbus.String, "Checker")
951
952
del notifychangeproperty
527
953
528
954
def __del__(self, *args, **kwargs):
529
955
try:
530
956
self.remove_from_connection()
531
957
except LookupError:
532
958
pass
533
if hasattr(dbus.service.Object, u"__del__"):
534
dbus.service.Object.__del__(self, *args, **kwargs)
959
if hasattr(DBusObjectWithProperties, "__del__"):
960
DBusObjectWithProperties.__del__(self, *args, **kwargs)
535
961
Client.__del__(self, *args, **kwargs)
536
962
537
963
def checker_callback(self, pid, condition, command,
538
964
*args, **kwargs):
539
965
self.checker_callback_tag = None
540
966
self.checker = None
541
# Emit D-Bus signal
542
self.PropertyChanged(dbus.String(u"checker_running"),
543
dbus.Boolean(False, variant_level=1))
544
967
if os.WIFEXITED(condition):
545
968
exitstatus = os.WEXITSTATUS(condition)
546
969
# Emit D-Bus signal
556
979
return Client.checker_callback(self, pid, condition, command,
557
980
*args, **kwargs)
558
981
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
568
982
def start_checker(self, *args, **kwargs):
569
983
old_checker = self.checker
570
984
if self.checker is not None:
577
991
and old_checker_pid != self.checker.pid):
578
992
# Emit D-Bus signal
579
993
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()
994
return r
995
996
def _reset_approved(self):
997
self._approved = None
998
return False
999
1000
def approve(self, value=True):
1001
self.send_changedstate()
1002
self._approved = value
1003
gobject.timeout_add(_timedelta_to_milliseconds
1004
(self.approval_duration),
1005
self._reset_approved)
1006
1007
1008
## D-Bus methods, signals & properties
1009
_interface = "se.recompile.Mandos.Client"
1010
1011
## Signals
601
1012
602
1013
# CheckerCompleted - signal
603
@dbus.service.signal(_interface, signature=u"nxs")
1014
@dbus.service.signal(_interface, signature="nxs")
604
1015
def CheckerCompleted(self, exitcode, waitstatus, command):
605
1016
"D-Bus signal"
606
1017
pass
607
1018
608
1019
# CheckerStarted - signal
609
@dbus.service.signal(_interface, signature=u"s")
1020
@dbus.service.signal(_interface, signature="s")
610
1021
def CheckerStarted(self, command):
611
1022
"D-Bus signal"
612
1023
pass
613
1024
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
1025
# PropertyChanged - signal
663
@dbus.service.signal(_interface, signature=u"sv")
1026
@dbus.service.signal(_interface, signature="sv")
664
1027
def PropertyChanged(self, property, value):
665
1028
"D-Bus signal"
666
1029
pass
667
1030
668
# ReceivedSecret - signal
1031
# GotSecret - signal
669
1032
@dbus.service.signal(_interface)
670
def ReceivedSecret(self):
671
"D-Bus signal"
1033
def GotSecret(self):
1034
"""D-Bus signal
1035
Is sent after a successful transfer of secret from the Mandos
1036
server to mandos-client
1037
"""
672
1038
pass
673
1039
674
1040
# Rejected - signal
675
@dbus.service.signal(_interface)
676
def Rejected(self):
1041
@dbus.service.signal(_interface, signature="s")
1042
def Rejected(self, reason):
677
1043
"D-Bus signal"
678
1044
pass
679
1045
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)))
1046
# NeedApproval - signal
1047
@dbus.service.signal(_interface, signature="tb")
1048
def NeedApproval(self, timeout, default):
1049
"D-Bus signal"
1050
return self.need_approval()
1051
1052
## Methods
1053
1054
# Approve - method
1055
@dbus.service.method(_interface, in_signature="b")
1056
def Approve(self, value):
1057
self.approve(value)
1058
1059
# CheckedOK - method
1060
@dbus.service.method(_interface)
1061
def CheckedOK(self):
1062
self.checked_ok()
723
1063
724
1064
# Enable - method
725
1065
@dbus.service.method(_interface)
744
1084
def StopChecker(self):
745
1085
self.stop_checker()
746
1086
1087
## Properties
1088
1089
# ApprovalPending - property
1090
@dbus_service_property(_interface, signature="b", access="read")
1091
def ApprovalPending_dbus_property(self):
1092
return dbus.Boolean(bool(self.approvals_pending))
1093
1094
# ApprovedByDefault - property
1095
@dbus_service_property(_interface, signature="b",
1096
access="readwrite")
1097
def ApprovedByDefault_dbus_property(self, value=None):
1098
if value is None: # get
1099
return dbus.Boolean(self.approved_by_default)
1100
self.approved_by_default = bool(value)
1101
1102
# ApprovalDelay - property
1103
@dbus_service_property(_interface, signature="t",
1104
access="readwrite")
1105
def ApprovalDelay_dbus_property(self, value=None):
1106
if value is None: # get
1107
return dbus.UInt64(self.approval_delay_milliseconds())
1108
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1109
1110
# ApprovalDuration - property
1111
@dbus_service_property(_interface, signature="t",
1112
access="readwrite")
1113
def ApprovalDuration_dbus_property(self, value=None):
1114
if value is None: # get
1115
return dbus.UInt64(_timedelta_to_milliseconds(
1116
self.approval_duration))
1117
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1118
1119
# Name - property
1120
@dbus_service_property(_interface, signature="s", access="read")
1121
def Name_dbus_property(self):
1122
return dbus.String(self.name)
1123
1124
# Fingerprint - property
1125
@dbus_service_property(_interface, signature="s", access="read")
1126
def Fingerprint_dbus_property(self):
1127
return dbus.String(self.fingerprint)
1128
1129
# Host - property
1130
@dbus_service_property(_interface, signature="s",
1131
access="readwrite")
1132
def Host_dbus_property(self, value=None):
1133
if value is None: # get
1134
return dbus.String(self.host)
1135
self.host = value
1136
1137
# Created - property
1138
@dbus_service_property(_interface, signature="s", access="read")
1139
def Created_dbus_property(self):
1140
return dbus.String(datetime_to_dbus(self.created))
1141
1142
# LastEnabled - property
1143
@dbus_service_property(_interface, signature="s", access="read")
1144
def LastEnabled_dbus_property(self):
1145
return datetime_to_dbus(self.last_enabled)
1146
1147
# Enabled - property
1148
@dbus_service_property(_interface, signature="b",
1149
access="readwrite")
1150
def Enabled_dbus_property(self, value=None):
1151
if value is None: # get
1152
return dbus.Boolean(self.enabled)
1153
if value:
1154
self.enable()
1155
else:
1156
self.disable()
1157
1158
# LastCheckedOK - property
1159
@dbus_service_property(_interface, signature="s",
1160
access="readwrite")
1161
def LastCheckedOK_dbus_property(self, value=None):
1162
if value is not None:
1163
self.checked_ok()
1164
return
1165
return datetime_to_dbus(self.last_checked_ok)
1166
1167
# Expires - property
1168
@dbus_service_property(_interface, signature="s", access="read")
1169
def Expires_dbus_property(self):
1170
return datetime_to_dbus(self.expires)
1171
1172
# LastApprovalRequest - property
1173
@dbus_service_property(_interface, signature="s", access="read")
1174
def LastApprovalRequest_dbus_property(self):
1175
return datetime_to_dbus(self.last_approval_request)
1176
1177
# Timeout - property
1178
@dbus_service_property(_interface, signature="t",
1179
access="readwrite")
1180
def Timeout_dbus_property(self, value=None):
1181
if value is None: # get
1182
return dbus.UInt64(self.timeout_milliseconds())
1183
self.timeout = datetime.timedelta(0, 0, 0, value)
1184
if getattr(self, "disable_initiator_tag", None) is None:
1185
return
1186
# Reschedule timeout
1187
gobject.source_remove(self.disable_initiator_tag)
1188
self.disable_initiator_tag = None
1189
self.expires = None
1190
time_to_die = (self.
1191
_timedelta_to_milliseconds((self
1192
.last_checked_ok
1193
+ self.timeout)
1194
- datetime.datetime
1195
.utcnow()))
1196
if time_to_die <= 0:
1197
# The timeout has passed
1198
self.disable()
1199
else:
1200
self.expires = (datetime.datetime.utcnow()
1201
+ datetime.timedelta(milliseconds =
1202
time_to_die))
1203
self.disable_initiator_tag = (gobject.timeout_add
1204
(time_to_die, self.disable))
1205
1206
# ExtendedTimeout - property
1207
@dbus_service_property(_interface, signature="t",
1208
access="readwrite")
1209
def ExtendedTimeout_dbus_property(self, value=None):
1210
if value is None: # get
1211
return dbus.UInt64(self.extended_timeout_milliseconds())
1212
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1213
1214
# Interval - property
1215
@dbus_service_property(_interface, signature="t",
1216
access="readwrite")
1217
def Interval_dbus_property(self, value=None):
1218
if value is None: # get
1219
return dbus.UInt64(self.interval_milliseconds())
1220
self.interval = datetime.timedelta(0, 0, 0, value)
1221
if getattr(self, "checker_initiator_tag", None) is None:
1222
return
1223
# Reschedule checker run
1224
gobject.source_remove(self.checker_initiator_tag)
1225
self.checker_initiator_tag = (gobject.timeout_add
1226
(value, self.start_checker))
1227
self.start_checker() # Start one now, too
1228
1229
# Checker - property
1230
@dbus_service_property(_interface, signature="s",
1231
access="readwrite")
1232
def Checker_dbus_property(self, value=None):
1233
if value is None: # get
1234
return dbus.String(self.checker_command)
1235
self.checker_command = value
1236
1237
# CheckerRunning - property
1238
@dbus_service_property(_interface, signature="b",
1239
access="readwrite")
1240
def CheckerRunning_dbus_property(self, value=None):
1241
if value is None: # get
1242
return dbus.Boolean(self.checker is not None)
1243
if value:
1244
self.start_checker()
1245
else:
1246
self.stop_checker()
1247
1248
# ObjectPath - property
1249
@dbus_service_property(_interface, signature="o", access="read")
1250
def ObjectPath_dbus_property(self):
1251
return self.dbus_object_path # is already a dbus.ObjectPath
1252
1253
# Secret = property
1254
@dbus_service_property(_interface, signature="ay",
1255
access="write", byte_arrays=True)
1256
def Secret_dbus_property(self, value):
1257
self.secret = str(value)
1258
747
1259
del _interface
748
1260
749
1261
1262
class ProxyClient(object):
1263
def __init__(self, child_pipe, fpr, address):
1264
self._pipe = child_pipe
1265
self._pipe.send(('init', fpr, address))
1266
if not self._pipe.recv():
1267
raise KeyError()
1268
1269
def __getattribute__(self, name):
1270
if(name == '_pipe'):
1271
return super(ProxyClient, self).__getattribute__(name)
1272
self._pipe.send(('getattr', name))
1273
data = self._pipe.recv()
1274
if data[0] == 'data':
1275
return data[1]
1276
if data[0] == 'function':
1277
def func(*args, **kwargs):
1278
self._pipe.send(('funcall', name, args, kwargs))
1279
return self._pipe.recv()[1]
1280
return func
1281
1282
def __setattr__(self, name, value):
1283
if(name == '_pipe'):
1284
return super(ProxyClient, self).__setattr__(name, value)
1285
self._pipe.send(('setattr', name, value))
1286
1287
class ClientDBusTransitional(ClientDBus):
1288
__metaclass__ = AlternateDBusNamesMetaclass
1289
750
1290
class ClientHandler(socketserver.BaseRequestHandler, object):
751
1291
"""A class to handle client connections.
752
1292
754
1294
Note: This will run in its own forked process."""
755
1295
756
1296
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:
1297
with contextlib.closing(self.server.child_pipe) as child_pipe:
1298
logger.info("TCP connection from: %s",
1299
unicode(self.client_address))
1300
logger.debug("Pipe FD: %d",
1301
self.server.child_pipe.fileno())
1302
762
1303
session = (gnutls.connection
763
1304
.ClientSession(self.request,
764
1305
gnutls.connection
765
1306
.X509Credentials()))
766
1307
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
776
1308
# Note: gnutls.connection.X509Credentials is really a
777
1309
# generic GnuTLS certificate credentials object so long as
778
1310
# no X.509 keys are added to it. Therefore, we can use it
779
1311
# here despite using OpenPGP certificates.
780
1312
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"))
1313
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1314
# "+AES-256-CBC", "+SHA1",
1315
# "+COMP-NULL", "+CTYPE-OPENPGP",
1316
# "+DHE-DSS"))
785
1317
# Use a fallback default, since this MUST be set.
786
1318
priority = self.server.gnutls_priority
787
1319
if priority is None:
788
priority = u"NORMAL"
1320
priority = "NORMAL"
789
1321
(gnutls.library.functions
790
1322
.gnutls_priority_set_direct(session._c_object,
791
1323
priority, None))
792
1324
1325
# Start communication using the Mandos protocol
1326
# Get protocol number
1327
line = self.request.makefile().readline()
1328
logger.debug("Protocol version: %r", line)
1329
try:
1330
if int(line.strip().split()[0]) > 1:
1331
raise RuntimeError
1332
except (ValueError, IndexError, RuntimeError) as error:
1333
logger.error("Unknown protocol version: %s", error)
1334
return
1335
1336
# Start GnuTLS connection
793
1337
try:
794
1338
session.handshake()
795
except gnutls.errors.GNUTLSError, error:
796
logger.warning(u"Handshake failed: %s", error)
1339
except gnutls.errors.GNUTLSError as error:
1340
logger.warning("Handshake failed: %s", error)
797
1341
# Do not run session.bye() here: the session is not
798
1342
# established. Just abandon the request.
799
1343
return
800
logger.debug(u"Handshake succeeded")
1344
logger.debug("Handshake succeeded")
1345
1346
approval_required = False
801
1347
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)
1348
try:
1349
fpr = self.fingerprint(self.peer_certificate
1350
(session))
1351
except (TypeError,
1352
gnutls.errors.GNUTLSError) as error:
1353
logger.warning("Bad certificate: %s", error)
1354
return
1355
logger.debug("Fingerprint: %s", fpr)
1356
1357
try:
1358
client = ProxyClient(child_pipe, fpr,
1359
self.client_address)
1360
except KeyError:
1361
return
1362
1363
if client.approval_delay:
1364
delay = client.approval_delay
1365
client.approvals_pending += 1
1366
approval_required = True
1367
1368
while True:
1369
if not client.enabled:
1370
logger.info("Client %s is disabled",
1371
client.name)
1372
if self.server.use_dbus:
1373
# Emit D-Bus signal
1374
client.Rejected("Disabled")
1375
return
1376
1377
if client._approved or not client.approval_delay:
1378
#We are approved or approval is disabled
1379
break
1380
elif client._approved is None:
1381
logger.info("Client %s needs approval",
1382
client.name)
1383
if self.server.use_dbus:
1384
# Emit D-Bus signal
1385
client.NeedApproval(
1386
client.approval_delay_milliseconds(),
1387
client.approved_by_default)
1388
else:
1389
logger.warning("Client %s was not approved",
1390
client.name)
1391
if self.server.use_dbus:
1392
# Emit D-Bus signal
1393
client.Rejected("Denied")
1394
return
1395
1396
#wait until timeout or approved
1397
#x = float(client
1398
# ._timedelta_to_milliseconds(delay))
1399
time = datetime.datetime.now()
1400
client.changedstate.acquire()
1401
(client.changedstate.wait
1402
(float(client._timedelta_to_milliseconds(delay)
1403
/ 1000)))
1404
client.changedstate.release()
1405
time2 = datetime.datetime.now()
1406
if (time2 - time) >= delay:
1407
if not client.approved_by_default:
1408
logger.warning("Client %s timed out while"
1409
" waiting for approval",
1410
client.name)
1411
if self.server.use_dbus:
1412
# Emit D-Bus signal
1413
client.Rejected("Approval timed out")
1414
return
1415
else:
1416
break
1417
else:
1418
delay -= time2 - time
1419
1420
sent_size = 0
1421
while sent_size < len(client.secret):
1422
try:
1423
sent = session.send(client.secret[sent_size:])
1424
except gnutls.errors.GNUTLSError as error:
1425
logger.warning("gnutls send failed")
1426
return
1427
logger.debug("Sent: %d, remaining: %d",
1428
sent, len(client.secret)
1429
- (sent_size + sent))
1430
sent_size += sent
1431
1432
logger.info("Sending secret to %s", client.name)
1433
# bump the timeout as if seen
1434
client.checked_ok(client.extended_timeout)
1435
if self.server.use_dbus:
1436
# Emit D-Bus signal
1437
client.GotSecret()
808
1438
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\n" % fpr)
815
session.bye()
816
return
817
# Have to check if client.still_valid(), since it is
818
# possible that the client timed out while establishing
819
# the GnuTLS session.
820
if not client.still_valid():
821
ipc.write(u"INVALID %s\n" % client.name)
822
session.bye()
823
return
824
ipc.write(u"SENDING %s\n" % client.name)
825
sent_size = 0
826
while sent_size < len(client.secret):
827
sent = session.send(client.secret[sent_size:])
828
logger.debug(u"Sent: %d, remaining: %d",
829
sent, len(client.secret)
830
- (sent_size + sent))
831
sent_size += sent
832
session.bye()
1439
finally:
1440
if approval_required:
1441
client.approvals_pending -= 1
1442
try:
1443
session.bye()
1444
except gnutls.errors.GNUTLSError as error:
1445
logger.warning("GnuTLS bye failed")
833
1446
834
1447
@staticmethod
835
1448
def peer_certificate(session):
845
1458
.gnutls_certificate_get_peers
846
1459
(session._c_object, ctypes.byref(list_size)))
847
1460
if not bool(cert_list) and list_size.value != 0:
848
raise gnutls.errors.GNUTLSError(u"error getting peer"
849
u" certificate")
1461
raise gnutls.errors.GNUTLSError("error getting peer"
1462
" certificate")
850
1463
if list_size.value == 0:
851
1464
return None
852
1465
cert = cert_list[0]
878
1491
if crtverify.value != 0:
879
1492
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
880
1493
raise (gnutls.errors.CertificateSecurityError
881
(u"Verify failed"))
1494
("Verify failed"))
882
1495
# New buffer for the fingerprint
883
1496
buf = ctypes.create_string_buffer(20)
884
1497
buf_len = ctypes.c_size_t()
891
1504
# Convert the buffer to a Python bytestring
892
1505
fpr = ctypes.string_at(buf, buf_len.value)
893
1506
# Convert the bytestring to hexadecimal notation
894
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1507
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
895
1508
return hex_fpr
896
1509
897
1510
898
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
899
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1511
class MultiprocessingMixIn(object):
1512
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1513
def sub_process_main(self, request, address):
1514
try:
1515
self.finish_request(request, address)
1516
except:
1517
self.handle_error(request, address)
1518
self.close_request(request)
1519
1520
def process_request(self, request, address):
1521
"""Start a new process to process the request."""
1522
multiprocessing.Process(target = self.sub_process_main,
1523
args = (request, address)).start()
1524
1525
1526
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1527
""" adds a pipe to the MixIn """
900
1528
def process_request(self, request, client_address):
901
1529
"""Overrides and wraps the original process_request().
902
1530
903
This function creates a new pipe in self.pipe
1531
This function creates a new pipe in self.pipe
904
1532
"""
905
self.pipe = os.pipe()
906
super(ForkingMixInWithPipe,
1533
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1534
1535
super(MultiprocessingMixInWithPipe,
907
1536
self).process_request(request, client_address)
908
os.close(self.pipe[1]) # close write end
909
self.add_pipe(self.pipe[0])
910
def add_pipe(self, pipe):
1537
self.child_pipe.close()
1538
self.add_pipe(parent_pipe)
1539
1540
def add_pipe(self, parent_pipe):
911
1541
"""Dummy function; override as necessary"""
912
os.close(pipe)
913
914
915
class IPv6_TCPServer(ForkingMixInWithPipe,
1542
raise NotImplementedError
1543
1544
1545
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
916
1546
socketserver.TCPServer, object):
917
1547
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
918
1548
934
1564
bind to an address or port if they were not specified."""
935
1565
if self.interface is not None:
936
1566
if SO_BINDTODEVICE is None:
937
logger.error(u"SO_BINDTODEVICE does not exist;"
938
u" cannot bind to interface %s",
1567
logger.error("SO_BINDTODEVICE does not exist;"
1568
" cannot bind to interface %s",
939
1569
self.interface)
940
1570
else:
941
1571
try:
942
1572
self.socket.setsockopt(socket.SOL_SOCKET,
943
1573
SO_BINDTODEVICE,
944
1574
str(self.interface
945
+ u'\0'))
946
except socket.error, error:
1575
+ '\0'))
1576
except socket.error as error:
947
1577
if error[0] == errno.EPERM:
948
logger.error(u"No permission to"
949
u" bind to interface %s",
1578
logger.error("No permission to"
1579
" bind to interface %s",
950
1580
self.interface)
951
1581
elif error[0] == errno.ENOPROTOOPT:
952
logger.error(u"SO_BINDTODEVICE not available;"
953
u" cannot bind to interface %s",
1582
logger.error("SO_BINDTODEVICE not available;"
1583
" cannot bind to interface %s",
954
1584
self.interface)
955
1585
else:
956
1586
raise
958
1588
if self.server_address[0] or self.server_address[1]:
959
1589
if not self.server_address[0]:
960
1590
if self.address_family == socket.AF_INET6:
961
any_address = u"::" # in6addr_any
1591
any_address = "::" # in6addr_any
962
1592
else:
963
1593
any_address = socket.INADDR_ANY
964
1594
self.server_address = (any_address,
982
1612
clients: set of Client objects
983
1613
gnutls_priority GnuTLS priority string
984
1614
use_dbus: Boolean; to emit D-Bus signals or not
985
clients: set of Client objects
986
gnutls_priority GnuTLS priority string
987
use_dbus: Boolean; to emit D-Bus signals or not
988
1615
989
1616
Assumes a gobject.MainLoop event loop.
990
1617
"""
1006
1633
return socketserver.TCPServer.server_activate(self)
1007
1634
def enable(self):
1008
1635
self.enabled = True
1009
def add_pipe(self, pipe):
1636
def add_pipe(self, parent_pipe):
1010
1637
# Call "handle_ipc" for both data and EOF events
1011
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1012
self.handle_ipc)
1013
def handle_ipc(self, source, condition, file_objects={}):
1638
gobject.io_add_watch(parent_pipe.fileno(),
1639
gobject.IO_IN | gobject.IO_HUP,
1640
functools.partial(self.handle_ipc,
1641
parent_pipe =
1642
parent_pipe))
1643
1644
def handle_ipc(self, source, condition, parent_pipe=None,
1645
client_object=None):
1014
1646
condition_names = {
1015
gobject.IO_IN: u"IN", # There is data to read.
1016
gobject.IO_OUT: u"OUT", # Data can be written (without
1647
gobject.IO_IN: "IN", # There is data to read.
1648
gobject.IO_OUT: "OUT", # Data can be written (without
1017
1649
# blocking).
1018
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1019
gobject.IO_ERR: u"ERR", # Error condition.
1020
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1650
gobject.IO_PRI: "PRI", # There is urgent data to read.
1651
gobject.IO_ERR: "ERR", # Error condition.
1652
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1021
1653
# broken, usually for pipes and
1022
1654
# sockets).
1023
1655
}
1025
1657
for cond, name in
1026
1658
condition_names.iteritems()
1027
1659
if cond & condition)
1028
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1029
conditions_string)
1030
1031
# Turn the pipe file descriptor into a Python file object
1032
if source not in file_objects:
1033
file_objects[source] = os.fdopen(source, u"r", 1)
1034
1035
# Read a line from the file object
1036
cmdline = file_objects[source].readline()
1037
if not cmdline: # Empty line means end of file
1038
# close the IPC pipe
1039
file_objects[source].close()
1040
del file_objects[source]
1041
1042
# Stop calling this function
1043
return False
1044
1045
logger.debug(u"IPC command: %r", cmdline)
1046
1047
# Parse and act on command
1048
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1049
1050
if cmd == u"NOTFOUND":
1051
logger.warning(u"Client not found for fingerprint: %s",
1052
args)
1053
if self.use_dbus:
1054
# Emit D-Bus signal
1055
mandos_dbus_service.ClientNotFound(args)
1056
elif cmd == u"INVALID":
1057
for client in self.clients:
1058
if client.name == args:
1059
logger.warning(u"Client %s is invalid", args)
1060
if self.use_dbus:
1061
# Emit D-Bus signal
1062
client.Rejected()
1063
break
1064
else:
1065
logger.error(u"Unknown client %s is invalid", args)
1066
elif cmd == u"SENDING":
1067
for client in self.clients:
1068
if client.name == args:
1069
logger.info(u"Sending secret to %s", client.name)
1070
client.checked_ok()
1071
if self.use_dbus:
1072
# Emit D-Bus signal
1073
client.ReceivedSecret()
1074
break
1075
else:
1076
logger.error(u"Sending secret to unknown client %s",
1077
args)
1078
else:
1079
logger.error(u"Unknown IPC command: %r", cmdline)
1080
1081
# Keep calling this function
1660
# error or the other end of multiprocessing.Pipe has closed
1661
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1662
return False
1663
1664
# Read a request from the child
1665
request = parent_pipe.recv()
1666
command = request[0]
1667
1668
if command == 'init':
1669
fpr = request[1]
1670
address = request[2]
1671
1672
for c in self.clients:
1673
if c.fingerprint == fpr:
1674
client = c
1675
break
1676
else:
1677
logger.info("Client not found for fingerprint: %s, ad"
1678
"dress: %s", fpr, address)
1679
if self.use_dbus:
1680
# Emit D-Bus signal
1681
mandos_dbus_service.ClientNotFound(fpr,
1682
address[0])
1683
parent_pipe.send(False)
1684
return False
1685
1686
gobject.io_add_watch(parent_pipe.fileno(),
1687
gobject.IO_IN | gobject.IO_HUP,
1688
functools.partial(self.handle_ipc,
1689
parent_pipe =
1690
parent_pipe,
1691
client_object =
1692
client))
1693
parent_pipe.send(True)
1694
# remove the old hook in favor of the new above hook on
1695
# same fileno
1696
return False
1697
if command == 'funcall':
1698
funcname = request[1]
1699
args = request[2]
1700
kwargs = request[3]
1701
1702
parent_pipe.send(('data', getattr(client_object,
1703
funcname)(*args,
1704
**kwargs)))
1705
1706
if command == 'getattr':
1707
attrname = request[1]
1708
if callable(client_object.__getattribute__(attrname)):
1709
parent_pipe.send(('function',))
1710
else:
1711
parent_pipe.send(('data', client_object
1712
.__getattribute__(attrname)))
1713
1714
if command == 'setattr':
1715
attrname = request[1]
1716
value = request[2]
1717
setattr(client_object, attrname, value)
1718
1082
1719
return True
1083
1720
1084
1721
1085
1722
def string_to_delta(interval):
1086
1723
"""Parse a string and return a datetime.timedelta
1087
1724
1088
>>> string_to_delta(u'7d')
1725
>>> string_to_delta('7d')
1089
1726
datetime.timedelta(7)
1090
>>> string_to_delta(u'60s')
1727
>>> string_to_delta('60s')
1091
1728
datetime.timedelta(0, 60)
1092
>>> string_to_delta(u'60m')
1729
>>> string_to_delta('60m')
1093
1730
datetime.timedelta(0, 3600)
1094
>>> string_to_delta(u'24h')
1731
>>> string_to_delta('24h')
1095
1732
datetime.timedelta(1)
1096
>>> string_to_delta(u'1w')
1733
>>> string_to_delta('1w')
1097
1734
datetime.timedelta(7)
1098
>>> string_to_delta(u'5m 30s')
1735
>>> string_to_delta('5m 30s')
1099
1736
datetime.timedelta(0, 330)
1100
1737
"""
1101
1738
timevalue = datetime.timedelta(0)
1103
1740
try:
1104
1741
suffix = unicode(s[-1])
1105
1742
value = int(s[:-1])
1106
if suffix == u"d":
1743
if suffix == "d":
1107
1744
delta = datetime.timedelta(value)
1108
elif suffix == u"s":
1745
elif suffix == "s":
1109
1746
delta = datetime.timedelta(0, value)
1110
elif suffix == u"m":
1747
elif suffix == "m":
1111
1748
delta = datetime.timedelta(0, 0, 0, 0, value)
1112
elif suffix == u"h":
1749
elif suffix == "h":
1113
1750
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1114
elif suffix == u"w":
1751
elif suffix == "w":
1115
1752
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1116
1753
else:
1117
raise ValueError
1118
except (ValueError, IndexError):
1119
raise ValueError
1754
raise ValueError("Unknown suffix %r" % suffix)
1755
except (ValueError, IndexError) as e:
1756
raise ValueError(*(e.args))
1120
1757
timevalue += delta
1121
1758
return timevalue
1122
1759
1128
1765
global if_nametoindex
1129
1766
try:
1130
1767
if_nametoindex = (ctypes.cdll.LoadLibrary
1131
(ctypes.util.find_library(u"c"))
1768
(ctypes.util.find_library("c"))
1132
1769
.if_nametoindex)
1133
1770
except (OSError, AttributeError):
1134
logger.warning(u"Doing if_nametoindex the hard way")
1771
logger.warning("Doing if_nametoindex the hard way")
1135
1772
def if_nametoindex(interface):
1136
1773
"Get an interface index the hard way, i.e. using fcntl()"
1137
1774
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1138
with closing(socket.socket()) as s:
1775
with contextlib.closing(socket.socket()) as s:
1139
1776
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1140
struct.pack(str(u"16s16x"),
1777
struct.pack(str("16s16x"),
1141
1778
interface))
1142
interface_index = struct.unpack(str(u"I"),
1779
interface_index = struct.unpack(str("I"),
1143
1780
ifreq[16:20])[0]
1144
1781
return interface_index
1145
1782
return if_nametoindex(interface)
1153
1790
sys.exit()
1154
1791
os.setsid()
1155
1792
if not nochdir:
1156
os.chdir(u"/")
1793
os.chdir("/")
1157
1794
if os.fork():
1158
1795
sys.exit()
1159
1796
if not noclose:
1161
1798
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1162
1799
if not stat.S_ISCHR(os.fstat(null).st_mode):
1163
1800
raise OSError(errno.ENODEV,
1164
u"/dev/null not a character device")
1801
"%s not a character device"
1802
% os.path.devnull)
1165
1803
os.dup2(null, sys.stdin.fileno())
1166
1804
os.dup2(null, sys.stdout.fileno())
1167
1805
os.dup2(null, sys.stderr.fileno())
1171
1809
1172
1810
def main():
1173
1811
1174
######################################################################
1812
##################################################################
1175
1813
# Parsing of options, both command line and config file
1176
1814
1177
parser = optparse.OptionParser(version = "%%prog %s" % version)
1178
parser.add_option("-i", u"--interface", type=u"string",
1179
metavar="IF", help=u"Bind to interface IF")
1180
parser.add_option("-a", u"--address", type=u"string",
1181
help=u"Address to listen for requests on")
1182
parser.add_option("-p", u"--port", type=u"int",
1183
help=u"Port number to receive requests on")
1184
parser.add_option("--check", action=u"store_true",
1185
help=u"Run self-test")
1186
parser.add_option("--debug", action=u"store_true",
1187
help=u"Debug mode; run in foreground and log to"
1188
u" terminal")
1189
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1190
u" priority string (see GnuTLS documentation)")
1191
parser.add_option("--servicename", type=u"string",
1192
metavar=u"NAME", help=u"Zeroconf service name")
1193
parser.add_option("--configdir", type=u"string",
1194
default=u"/etc/mandos", metavar=u"DIR",
1195
help=u"Directory to search for configuration"
1196
u" files")
1197
parser.add_option("--no-dbus", action=u"store_false",
1198
dest=u"use_dbus", help=u"Do not provide D-Bus"
1199
u" system bus interface")
1200
parser.add_option("--no-ipv6", action=u"store_false",
1201
dest=u"use_ipv6", help=u"Do not use IPv6")
1202
options = parser.parse_args()[0]
1815
parser = argparse.ArgumentParser()
1816
parser.add_argument("-v", "--version", action="version",
1817
version = "%%(prog)s %s" % version,
1818
help="show version number and exit")
1819
parser.add_argument("-i", "--interface", metavar="IF",
1820
help="Bind to interface IF")
1821
parser.add_argument("-a", "--address",
1822
help="Address to listen for requests on")
1823
parser.add_argument("-p", "--port", type=int,
1824
help="Port number to receive requests on")
1825
parser.add_argument("--check", action="store_true",
1826
help="Run self-test")
1827
parser.add_argument("--debug", action="store_true",
1828
help="Debug mode; run in foreground and log"
1829
" to terminal")
1830
parser.add_argument("--debuglevel", metavar="LEVEL",
1831
help="Debug level for stdout output")
1832
parser.add_argument("--priority", help="GnuTLS"
1833
" priority string (see GnuTLS documentation)")
1834
parser.add_argument("--servicename",
1835
metavar="NAME", help="Zeroconf service name")
1836
parser.add_argument("--configdir",
1837
default="/etc/mandos", metavar="DIR",
1838
help="Directory to search for configuration"
1839
" files")
1840
parser.add_argument("--no-dbus", action="store_false",
1841
dest="use_dbus", help="Do not provide D-Bus"
1842
" system bus interface")
1843
parser.add_argument("--no-ipv6", action="store_false",
1844
dest="use_ipv6", help="Do not use IPv6")
1845
options = parser.parse_args()
1203
1846
1204
1847
if options.check:
1205
1848
import doctest
1207
1850
sys.exit()
1208
1851
1209
1852
# Default values for config file for server-global settings
1210
server_defaults = { u"interface": u"",
1211
u"address": u"",
1212
u"port": u"",
1213
u"debug": u"False",
1214
u"priority":
1215
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1216
u"servicename": u"Mandos",
1217
u"use_dbus": u"True",
1218
u"use_ipv6": u"True",
1853
server_defaults = { "interface": "",
1854
"address": "",
1855
"port": "",
1856
"debug": "False",
1857
"priority":
1858
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1859
"servicename": "Mandos",
1860
"use_dbus": "True",
1861
"use_ipv6": "True",
1862
"debuglevel": "",
1219
1863
}
1220
1864
1221
1865
# Parse config file for server-global settings
1222
1866
server_config = configparser.SafeConfigParser(server_defaults)
1223
1867
del server_defaults
1224
1868
server_config.read(os.path.join(options.configdir,
1225
u"mandos.conf"))
1869
"mandos.conf"))
1226
1870
# Convert the SafeConfigParser object to a dict
1227
1871
server_settings = server_config.defaults()
1228
1872
# Use the appropriate methods on the non-string config options
1229
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1230
server_settings[option] = server_config.getboolean(u"DEFAULT",
1873
for option in ("debug", "use_dbus", "use_ipv6"):
1874
server_settings[option] = server_config.getboolean("DEFAULT",
1231
1875
option)
1232
1876
if server_settings["port"]:
1233
server_settings["port"] = server_config.getint(u"DEFAULT",
1234
u"port")
1877
server_settings["port"] = server_config.getint("DEFAULT",
1878
"port")
1235
1879
del server_config
1236
1880
1237
1881
# Override the settings from the config file with command line
1238
1882
# options, if set.
1239
for option in (u"interface", u"address", u"port", u"debug",
1240
u"priority", u"servicename", u"configdir",
1241
u"use_dbus", u"use_ipv6"):
1883
for option in ("interface", "address", "port", "debug",
1884
"priority", "servicename", "configdir",
1885
"use_dbus", "use_ipv6", "debuglevel"):
1242
1886
value = getattr(options, option)
1243
1887
if value is not None:
1244
1888
server_settings[option] = value
1252
1896
##################################################################
1253
1897
1254
1898
# For convenience
1255
debug = server_settings[u"debug"]
1256
use_dbus = server_settings[u"use_dbus"]
1257
use_ipv6 = server_settings[u"use_ipv6"]
1258
1259
if not debug:
1260
syslogger.setLevel(logging.WARNING)
1261
console.setLevel(logging.WARNING)
1262
1263
if server_settings[u"servicename"] != u"Mandos":
1899
debug = server_settings["debug"]
1900
debuglevel = server_settings["debuglevel"]
1901
use_dbus = server_settings["use_dbus"]
1902
use_ipv6 = server_settings["use_ipv6"]
1903
1904
if server_settings["servicename"] != "Mandos":
1264
1905
syslogger.setFormatter(logging.Formatter
1265
(u'Mandos (%s) [%%(process)d]:'
1266
u' %%(levelname)s: %%(message)s'
1267
% server_settings[u"servicename"]))
1906
('Mandos (%s) [%%(process)d]:'
1907
' %%(levelname)s: %%(message)s'
1908
% server_settings["servicename"]))
1268
1909
1269
1910
# Parse config file with clients
1270
client_defaults = { u"timeout": u"1h",
1271
u"interval": u"5m",
1272
u"checker": u"fping -q -- %%(host)s",
1273
u"host": u"",
1911
client_defaults = { "timeout": "5m",
1912
"extended_timeout": "15m",
1913
"interval": "2m",
1914
"checker": "fping -q -- %%(host)s",
1915
"host": "",
1916
"approval_delay": "0s",
1917
"approval_duration": "1s",
1274
1918
}
1275
1919
client_config = configparser.SafeConfigParser(client_defaults)
1276
client_config.read(os.path.join(server_settings[u"configdir"],
1277
u"clients.conf"))
1920
client_config.read(os.path.join(server_settings["configdir"],
1921
"clients.conf"))
1278
1922
1279
1923
global mandos_dbus_service
1280
1924
mandos_dbus_service = None
1281
1925
1282
tcp_server = MandosServer((server_settings[u"address"],
1283
server_settings[u"port"]),
1926
tcp_server = MandosServer((server_settings["address"],
1927
server_settings["port"]),
1284
1928
ClientHandler,
1285
interface=server_settings[u"interface"],
1929
interface=(server_settings["interface"]
1930
or None),
1286
1931
use_ipv6=use_ipv6,
1287
1932
gnutls_priority=
1288
server_settings[u"priority"],
1933
server_settings["priority"],
1289
1934
use_dbus=use_dbus)
1290
pidfilename = u"/var/run/mandos.pid"
1291
try:
1292
pidfile = open(pidfilename, u"w")
1293
except IOError:
1294
logger.error(u"Could not open file %r", pidfilename)
1935
if not debug:
1936
pidfilename = "/var/run/mandos.pid"
1937
try:
1938
pidfile = open(pidfilename, "w")
1939
except IOError:
1940
logger.error("Could not open file %r", pidfilename)
1295
1941
1296
1942
try:
1297
uid = pwd.getpwnam(u"_mandos").pw_uid
1298
gid = pwd.getpwnam(u"_mandos").pw_gid
1943
uid = pwd.getpwnam("_mandos").pw_uid
1944
gid = pwd.getpwnam("_mandos").pw_gid
1299
1945
except KeyError:
1300
1946
try:
1301
uid = pwd.getpwnam(u"mandos").pw_uid
1302
gid = pwd.getpwnam(u"mandos").pw_gid
1947
uid = pwd.getpwnam("mandos").pw_uid
1948
gid = pwd.getpwnam("mandos").pw_gid
1303
1949
except KeyError:
1304
1950
try:
1305
uid = pwd.getpwnam(u"nobody").pw_uid
1306
gid = pwd.getpwnam(u"nobody").pw_gid
1951
uid = pwd.getpwnam("nobody").pw_uid
1952
gid = pwd.getpwnam("nobody").pw_gid
1307
1953
except KeyError:
1308
1954
uid = 65534
1309
1955
gid = 65534
1310
1956
try:
1311
1957
os.setgid(gid)
1312
1958
os.setuid(uid)
1313
except OSError, error:
1959
except OSError as error:
1314
1960
if error[0] != errno.EPERM:
1315
1961
raise error
1316
1962
1317
# Enable all possible GnuTLS debugging
1963
if not debug and not debuglevel:
1964
syslogger.setLevel(logging.WARNING)
1965
console.setLevel(logging.WARNING)
1966
if debuglevel:
1967
level = getattr(logging, debuglevel.upper())
1968
syslogger.setLevel(level)
1969
console.setLevel(level)
1970
1318
1971
if debug:
1972
# Enable all possible GnuTLS debugging
1973
1319
1974
# "Use a log level over 10 to enable all debugging options."
1320
1975
# - GnuTLS manual
1321
1976
gnutls.library.functions.gnutls_global_set_log_level(11)
1322
1977
1323
1978
@gnutls.library.types.gnutls_log_func
1324
1979
def debug_gnutls(level, string):
1325
logger.debug(u"GnuTLS: %s", string[:-1])
1980
logger.debug("GnuTLS: %s", string[:-1])
1326
1981
1327
1982
(gnutls.library.functions
1328
1983
.gnutls_global_set_log_function(debug_gnutls))
1984
1985
# Redirect stdin so all checkers get /dev/null
1986
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1987
os.dup2(null, sys.stdin.fileno())
1988
if null > 2:
1989
os.close(null)
1990
else:
1991
# No console logging
1992
logger.removeHandler(console)
1993
1994
# Need to fork before connecting to D-Bus
1995
if not debug:
1996
# Close all input and output, do double fork, etc.
1997
daemon()
1329
1998
1330
1999
global main_loop
1331
2000
# From the Avahi example code
1334
2003
bus = dbus.SystemBus()
1335
2004
# End of Avahi example code
1336
2005
if use_dbus:
1337
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2006
try:
2007
bus_name = dbus.service.BusName("se.recompile.Mandos",
2008
bus, do_not_queue=True)
2009
old_bus_name = (dbus.service.BusName
2010
("se.bsnet.fukt.Mandos", bus,
2011
do_not_queue=True))
2012
except dbus.exceptions.NameExistsException as e:
2013
logger.error(unicode(e) + ", disabling D-Bus")
2014
use_dbus = False
2015
server_settings["use_dbus"] = False
2016
tcp_server.use_dbus = False
1338
2017
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1339
service = AvahiService(name = server_settings[u"servicename"],
1340
servicetype = u"_mandos._tcp",
2018
service = AvahiService(name = server_settings["servicename"],
2019
servicetype = "_mandos._tcp",
1341
2020
protocol = protocol, bus = bus)
1342
2021
if server_settings["interface"]:
1343
2022
service.interface = (if_nametoindex
1344
(str(server_settings[u"interface"])))
2023
(str(server_settings["interface"])))
2024
2025
global multiprocessing_manager
2026
multiprocessing_manager = multiprocessing.Manager()
1345
2027
1346
2028
client_class = Client
1347
2029
if use_dbus:
1348
client_class = functools.partial(ClientDBus, bus = bus)
2030
client_class = functools.partial(ClientDBusTransitional,
2031
bus = bus)
2032
def client_config_items(config, section):
2033
special_settings = {
2034
"approved_by_default":
2035
lambda: config.getboolean(section,
2036
"approved_by_default"),
2037
}
2038
for name, value in config.items(section):
2039
try:
2040
yield (name, special_settings[name]())
2041
except KeyError:
2042
yield (name, value)
2043
1349
2044
tcp_server.clients.update(set(
1350
2045
client_class(name = section,
1351
config= dict(client_config.items(section)))
2046
config= dict(client_config_items(
2047
client_config, section)))
1352
2048
for section in client_config.sections()))
1353
2049
if not tcp_server.clients:
1354
logger.warning(u"No clients defined")
1355
1356
if debug:
1357
# Redirect stdin so all checkers get /dev/null
1358
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1359
os.dup2(null, sys.stdin.fileno())
1360
if null > 2:
1361
os.close(null)
1362
else:
1363
# No console logging
1364
logger.removeHandler(console)
1365
# Close all input and output, do double fork, etc.
1366
daemon()
1367
1368
try:
1369
with closing(pidfile):
1370
pid = os.getpid()
1371
pidfile.write(str(pid) + "\n")
1372
del pidfile
1373
except IOError:
1374
logger.error(u"Could not write to file %r with PID %d",
1375
pidfilename, pid)
1376
except NameError:
1377
# "pidfile" was never created
1378
pass
1379
del pidfilename
1380
1381
def cleanup():
1382
"Cleanup function; run on exit"
1383
service.cleanup()
2050
logger.warning("No clients defined")
1384
2051
1385
while tcp_server.clients:
1386
client = tcp_server.clients.pop()
1387
client.disable_hook = None
1388
client.disable()
1389
1390
atexit.register(cleanup)
1391
1392
2052
if not debug:
2053
try:
2054
with pidfile:
2055
pid = os.getpid()
2056
pidfile.write(str(pid) + "\n".encode("utf-8"))
2057
del pidfile
2058
except IOError:
2059
logger.error("Could not write to file %r with PID %d",
2060
pidfilename, pid)
2061
except NameError:
2062
# "pidfile" was never created
2063
pass
2064
del pidfilename
2065
1393
2066
signal.signal(signal.SIGINT, signal.SIG_IGN)
2067
1394
2068
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1395
2069
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1396
2070
1398
2072
class MandosDBusService(dbus.service.Object):
1399
2073
"""A D-Bus proxy object"""
1400
2074
def __init__(self):
1401
dbus.service.Object.__init__(self, bus, u"/")
1402
_interface = u"se.bsnet.fukt.Mandos"
1403
1404
@dbus.service.signal(_interface, signature=u"oa{sv}")
1405
def ClientAdded(self, objpath, properties):
1406
"D-Bus signal"
1407
pass
1408
1409
@dbus.service.signal(_interface, signature=u"s")
1410
def ClientNotFound(self, fingerprint):
1411
"D-Bus signal"
1412
pass
1413
1414
@dbus.service.signal(_interface, signature=u"os")
2075
dbus.service.Object.__init__(self, bus, "/")
2076
_interface = "se.recompile.Mandos"
2077
2078
@dbus.service.signal(_interface, signature="o")
2079
def ClientAdded(self, objpath):
2080
"D-Bus signal"
2081
pass
2082
2083
@dbus.service.signal(_interface, signature="ss")
2084
def ClientNotFound(self, fingerprint, address):
2085
"D-Bus signal"
2086
pass
2087
2088
@dbus.service.signal(_interface, signature="os")
1415
2089
def ClientRemoved(self, objpath, name):
1416
2090
"D-Bus signal"
1417
2091
pass
1418
2092
1419
@dbus.service.method(_interface, out_signature=u"ao")
2093
@dbus.service.method(_interface, out_signature="ao")
1420
2094
def GetAllClients(self):
1421
2095
"D-Bus method"
1422
2096
return dbus.Array(c.dbus_object_path
1423
2097
for c in tcp_server.clients)
1424
2098
1425
2099
@dbus.service.method(_interface,
1426
out_signature=u"a{oa{sv}}")
2100
out_signature="a{oa{sv}}")
1427
2101
def GetAllClientsWithProperties(self):
1428
2102
"D-Bus method"
1429
2103
return dbus.Dictionary(
1430
((c.dbus_object_path, c.GetAllProperties())
2104
((c.dbus_object_path, c.GetAll(""))
1431
2105
for c in tcp_server.clients),
1432
signature=u"oa{sv}")
2106
signature="oa{sv}")
1433
2107
1434
@dbus.service.method(_interface, in_signature=u"o")
2108
@dbus.service.method(_interface, in_signature="o")
1435
2109
def RemoveClient(self, object_path):
1436
2110
"D-Bus method"
1437
2111
for c in tcp_server.clients:
1439
2113
tcp_server.clients.remove(c)
1440
2114
c.remove_from_connection()
1441
2115
# Don't signal anything except ClientRemoved
1442
c.disable(signal=False)
2116
c.disable(quiet=True)
1443
2117
# Emit D-Bus signal
1444
2118
self.ClientRemoved(object_path, c.name)
1445
2119
return
1446
raise KeyError
2120
raise KeyError(object_path)
1447
2121
1448
2122
del _interface
1449
2123
1450
mandos_dbus_service = MandosDBusService()
2124
class MandosDBusServiceTransitional(MandosDBusService):
2125
__metaclass__ = AlternateDBusNamesMetaclass
2126
mandos_dbus_service = MandosDBusServiceTransitional()
2127
2128
def cleanup():
2129
"Cleanup function; run on exit"
2130
service.cleanup()
2131
2132
while tcp_server.clients:
2133
client = tcp_server.clients.pop()
2134
if use_dbus:
2135
client.remove_from_connection()
2136
client.disable_hook = None
2137
# Don't signal anything except ClientRemoved
2138
client.disable(quiet=True)
2139
if use_dbus:
2140
# Emit D-Bus signal
2141
mandos_dbus_service.ClientRemoved(client
2142
.dbus_object_path,
2143
client.name)
2144
2145
atexit.register(cleanup)
1451
2146
1452
2147
for client in tcp_server.clients:
1453
2148
if use_dbus:
1454
2149
# Emit D-Bus signal
1455
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1456
client.GetAllProperties())
2150
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1457
2151
client.enable()
1458
2152
1459
2153
tcp_server.enable()
1462
2156
# Find out what port we got
1463
2157
service.port = tcp_server.socket.getsockname()[1]
1464
2158
if use_ipv6:
1465
logger.info(u"Now listening on address %r, port %d,"
2159
logger.info("Now listening on address %r, port %d,"
1466
2160
" flowinfo %d, scope_id %d"
1467
2161
% tcp_server.socket.getsockname())
1468
2162
else: # IPv4
1469
logger.info(u"Now listening on address %r, port %d"
2163
logger.info("Now listening on address %r, port %d"
1470
2164
% tcp_server.socket.getsockname())
1471
2165
1472
2166
#service.interface = tcp_server.socket.getsockname()[3]
1475
2169
# From the Avahi example code
1476
2170
try:
1477
2171
service.activate()
1478
except dbus.exceptions.DBusException, error:
1479
logger.critical(u"DBusException: %s", error)
2172
except dbus.exceptions.DBusException as error:
2173
logger.critical("DBusException: %s", error)
2174
cleanup()
1480
2175
sys.exit(1)
1481
2176
# End of Avahi example code
1482
2177
1485
2180
(tcp_server.handle_request
1486
2181
(*args[2:], **kwargs) or True))
1487
2182
1488
logger.debug(u"Starting main loop")
2183
logger.debug("Starting main loop")
1489
2184
main_loop.run()
1490
except AvahiError, error:
1491
logger.critical(u"AvahiError: %s", error)
2185
except AvahiError as error:
2186
logger.critical("AvahiError: %s", error)
2187
cleanup()
1492
2188
sys.exit(1)
1493
2189
except KeyboardInterrupt:
1494
2190
if debug:
1495
print >> sys.stderr
1496
logger.debug(u"Server received KeyboardInterrupt")
1497
logger.debug(u"Server exiting")
2191
print("", file=sys.stderr)
2192
logger.debug("Server received KeyboardInterrupt")
2193
logger.debug("Server exiting")
2194
# Must run before the D-Bus bus name gets deregistered
2195
cleanup()
2196
1498
2197
1499
2198
if __name__ == '__main__':
1500
2199
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0