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- Committer: Teddy Hogeborn
- Date: 2009-11-03 00:12:35 UTC
- mto: (24.1.146 mandos) (237.12.2 mandos-persistent) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 270.
- Revision ID: teddy@fukt.bsnet.se-20091103001235-op9jfvtx6xvxch3h
* README (FAQ): Fix typo.
* mandos (main): Try to always do cleanup() before exit, since
otherwise the D-Bus bus name gets unregistered first.
* mandos (main): Try to always do cleanup() before exit, since
otherwise the D-Bus bus name gets unregistered first.
- files removed:
- DBUS-API
- debian/source
- files modified:
- .bzrignore
added
removed
mandos
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# "AvahiService" class, and some lines in "main".
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#
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# Everything else is
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# Contact the authors at <mandos@fukt.bsnet.se>.
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#
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from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
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from __future__ import division, with_statement, absolute_import
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import SocketServer as socketserver
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import socket
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import argparse
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import optparse
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import datetime
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import errno
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import gnutls.crypto
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import logging
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import logging.handlers
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import pwd
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import contextlib
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from contextlib import closing
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import struct
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import fcntl
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import functools
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import cPickle as pickle
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import multiprocessing
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import dbus
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import dbus.service
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SO_BINDTODEVICE = None
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version = "1.3.0"
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version = "1.0.14"
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#logger = logging.getLogger('mandos')
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logger = logging.Logger('mandos')
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logger = logging.Logger(u'mandos')
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syslogger = (logging.handlers.SysLogHandler
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = str("/dev/log")))
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address = "/dev/log"))
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syslogger.setFormatter(logging.Formatter
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('Mandos [%(process)d]: %(levelname)s:'
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' %(message)s'))
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(u'Mandos [%(process)d]: %(levelname)s:'
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u' %(message)s'))
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logger.addHandler(syslogger)
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
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' %(levelname)s:'
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' %(message)s'))
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console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
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u' %(levelname)s:'
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u' %(message)s'))
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logger.addHandler(console)
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class AvahiError(Exception):
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Attributes:
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interface: integer; avahi.IF_UNSPEC or an interface index.
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Used to optionally bind to the specified interface.
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name: string; Example: 'Mandos'
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type: string; Example: '_mandos._tcp'.
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name: string; Example: u'Mandos'
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type: string; Example: u'_mandos._tcp'.
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See <http://www.dns-sd.org/ServiceTypes.html>
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port: integer; what port to announce
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TXT: list of strings; TXT record for the service
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"""
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def __init__(self, interface = avahi.IF_UNSPEC, name = None,
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servicetype = None, port = None, TXT = None,
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domain = "", host = "", max_renames = 32768,
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domain = u"", host = u"", max_renames = 32768,
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protocol = avahi.PROTO_UNSPEC, bus = None):
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self.interface = interface
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self.name = name
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self.group = None # our entry group
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self.server = None
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self.bus = bus
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self.entry_group_state_changed_match = None
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def rename(self):
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"""Derived from the Avahi example code"""
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if self.rename_count >= self.max_renames:
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logger.critical("No suitable Zeroconf service name found"
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" after %i retries, exiting.",
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logger.critical(u"No suitable Zeroconf service name found"
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u" after %i retries, exiting.",
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self.rename_count)
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raise AvahiServiceError("Too many renames")
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self.name = unicode(self.server.GetAlternativeServiceName(self.name))
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logger.info("Changing Zeroconf service name to %r ...",
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self.name)
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raise AvahiServiceError(u"Too many renames")
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self.name = self.server.GetAlternativeServiceName(self.name)
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logger.info(u"Changing Zeroconf service name to %r ...",
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unicode(self.name))
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syslogger.setFormatter(logging.Formatter
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('Mandos (%s) [%%(process)d]:'
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' %%(levelname)s: %%(message)s'
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(u'Mandos (%s) [%%(process)d]:'
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u' %%(levelname)s: %%(message)s'
168
163
% self.name))
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self.remove()
170
try:
171
self.add()
172
except dbus.exceptions.DBusException as error:
173
logger.critical("DBusException: %s", error)
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self.cleanup()
175
os._exit(1)
165
self.add()
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self.rename_count += 1
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def remove(self):
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"""Derived from the Avahi example code"""
179
if self.entry_group_state_changed_match is not None:
180
self.entry_group_state_changed_match.remove()
181
self.entry_group_state_changed_match = None
182
169
if self.group is not None:
183
170
self.group.Reset()
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def add(self):
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"""Derived from the Avahi example code"""
186
self.remove()
187
173
if self.group is None:
188
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self.group = dbus.Interface(
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self.bus.get_object(avahi.DBUS_NAME,
190
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self.server.EntryGroupNew()),
191
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avahi.DBUS_INTERFACE_ENTRY_GROUP)
192
self.entry_group_state_changed_match = (
193
self.group.connect_to_signal(
194
'StateChanged', self .entry_group_state_changed))
195
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
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self.group.connect_to_signal('StateChanged',
179
self
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.entry_group_state_changed)
181
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
196
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self.name, self.type)
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self.group.AddService(
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self.interface,
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self.group.Commit()
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def entry_group_state_changed(self, state, error):
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"""Derived from the Avahi example code"""
208
logger.debug("Avahi entry group state change: %i", state)
194
logger.debug(u"Avahi state change: %i", state)
209
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210
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if state == avahi.ENTRY_GROUP_ESTABLISHED:
211
logger.debug("Zeroconf service established.")
197
logger.debug(u"Zeroconf service established.")
212
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elif state == avahi.ENTRY_GROUP_COLLISION:
213
logger.info("Zeroconf service name collision.")
199
logger.warning(u"Zeroconf service name collision.")
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self.rename()
215
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elif state == avahi.ENTRY_GROUP_FAILURE:
216
logger.critical("Avahi: Error in group state changed %s",
202
logger.critical(u"Avahi: Error in group state changed %s",
217
203
unicode(error))
218
raise AvahiGroupError("State changed: %s"
204
raise AvahiGroupError(u"State changed: %s"
219
205
% unicode(error))
220
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def cleanup(self):
221
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"""Derived from the Avahi example code"""
222
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if self.group is not None:
223
try:
224
self.group.Free()
225
except (dbus.exceptions.UnknownMethodException,
226
dbus.exceptions.DBusException) as e:
227
pass
209
self.group.Free()
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self.group = None
229
self.remove()
230
def server_state_changed(self, state, error=None):
211
def server_state_changed(self, state):
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"""Derived from the Avahi example code"""
232
logger.debug("Avahi server state change: %i", state)
233
bad_states = { avahi.SERVER_INVALID:
234
"Zeroconf server invalid",
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avahi.SERVER_REGISTERING: None,
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avahi.SERVER_COLLISION:
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"Zeroconf server name collision",
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avahi.SERVER_FAILURE:
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"Zeroconf server failure" }
240
if state in bad_states:
241
if bad_states[state] is not None:
242
if error is None:
243
logger.error(bad_states[state])
244
else:
245
logger.error(bad_states[state] + ": %r", error)
246
self.cleanup()
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
215
self.remove()
247
216
elif state == avahi.SERVER_RUNNING:
248
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self.add()
249
else:
250
if error is None:
251
logger.debug("Unknown state: %r", state)
252
else:
253
logger.debug("Unknown state: %r: %r", state, error)
254
218
def activate(self):
255
219
"""Derived from the Avahi example code"""
256
220
if self.server is None:
257
221
self.server = dbus.Interface(
258
222
self.bus.get_object(avahi.DBUS_NAME,
259
avahi.DBUS_PATH_SERVER,
260
follow_name_owner_changes=True),
223
avahi.DBUS_PATH_SERVER),
261
224
avahi.DBUS_INTERFACE_SERVER)
262
self.server.connect_to_signal("StateChanged",
225
self.server.connect_to_signal(u"StateChanged",
263
226
self.server_state_changed)
264
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self.server_state_changed(self.server.GetState())
265
228
268
231
"""A representation of a client host served by this server.
269
232
270
233
Attributes:
271
_approved: bool(); 'None' if not yet approved/disapproved
272
approval_delay: datetime.timedelta(); Time to wait for approval
273
approval_duration: datetime.timedelta(); Duration of one approval
234
name: string; from the config file, used in log messages and
235
D-Bus identifiers
236
fingerprint: string (40 or 32 hexadecimal digits); used to
237
uniquely identify the client
238
secret: bytestring; sent verbatim (over TLS) to client
239
host: string; available for use by the checker command
240
created: datetime.datetime(); (UTC) object creation
241
last_enabled: datetime.datetime(); (UTC)
242
enabled: bool()
243
last_checked_ok: datetime.datetime(); (UTC) or None
244
timeout: datetime.timedelta(); How long from last_checked_ok
245
until this client is invalid
246
interval: datetime.timedelta(); How often to start a new checker
247
disable_hook: If set, called by disable() as disable_hook(self)
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checker: subprocess.Popen(); a running checker process used
275
249
to see if the client lives.
276
250
'None' if no process is running.
277
checker_callback_tag: a gobject event source tag, or None
278
checker_command: string; External command which is run to check
279
if client lives. %() expansions are done at
251
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
253
checker_callback_tag: - '' -
254
checker_command: string; External command which is run to check if
255
client lives. %() expansions are done at
280
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runtime with vars(self) as dict, so that for
281
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instance %(name)s can be used in the command.
282
checker_initiator_tag: a gobject event source tag, or None
283
created: datetime.datetime(); (UTC) object creation
284
258
current_checker_command: string; current running checker_command
285
disable_hook: If set, called by disable() as disable_hook(self)
286
disable_initiator_tag: a gobject event source tag, or None
287
enabled: bool()
288
fingerprint: string (40 or 32 hexadecimal digits); used to
289
uniquely identify the client
290
host: string; available for use by the checker command
291
interval: datetime.timedelta(); How often to start a new checker
292
last_approval_request: datetime.datetime(); (UTC) or None
293
last_checked_ok: datetime.datetime(); (UTC) or None
294
last_enabled: datetime.datetime(); (UTC)
295
name: string; from the config file, used in log messages and
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D-Bus identifiers
297
secret: bytestring; sent verbatim (over TLS) to client
298
timeout: datetime.timedelta(); How long from last_checked_ok
299
until this client is disabled
300
runtime_expansions: Allowed attributes for runtime expansion.
301
259
"""
302
260
303
runtime_expansions = ("approval_delay", "approval_duration",
304
"created", "enabled", "fingerprint",
305
"host", "interval", "last_checked_ok",
306
"last_enabled", "name", "timeout")
307
308
261
@staticmethod
309
262
def _timedelta_to_milliseconds(td):
310
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"Convert a datetime.timedelta() to milliseconds"
319
272
def interval_milliseconds(self):
320
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"Return the 'interval' attribute in milliseconds"
321
274
return self._timedelta_to_milliseconds(self.interval)
322
323
def approval_delay_milliseconds(self):
324
return self._timedelta_to_milliseconds(self.approval_delay)
325
275
326
276
def __init__(self, name = None, disable_hook=None, config=None):
327
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"""Note: the 'checker' key in 'config' sets the
330
280
self.name = name
331
281
if config is None:
332
282
config = {}
333
logger.debug("Creating client %r", self.name)
283
logger.debug(u"Creating client %r", self.name)
334
284
# Uppercase and remove spaces from fingerprint for later
335
285
# comparison purposes with return value from the fingerprint()
336
286
# function
337
self.fingerprint = (config["fingerprint"].upper()
338
.replace(" ", ""))
339
logger.debug(" Fingerprint: %s", self.fingerprint)
340
if "secret" in config:
341
self.secret = config["secret"].decode("base64")
342
elif "secfile" in config:
343
with open(os.path.expanduser(os.path.expandvars
344
(config["secfile"])),
345
"rb") as secfile:
287
self.fingerprint = (config[u"fingerprint"].upper()
288
.replace(u" ", u""))
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
294
(os.path.expandvars
295
(config[u"secfile"])),
296
"rb")) as secfile:
346
297
self.secret = secfile.read()
347
298
else:
348
raise TypeError("No secret or secfile for client %s"
299
raise TypeError(u"No secret or secfile for client %s"
349
300
% self.name)
350
self.host = config.get("host", "")
301
self.host = config.get(u"host", u"")
351
302
self.created = datetime.datetime.utcnow()
352
303
self.enabled = False
353
self.last_approval_request = None
354
304
self.last_enabled = None
355
305
self.last_checked_ok = None
356
self.timeout = string_to_delta(config["timeout"])
357
self.interval = string_to_delta(config["interval"])
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
358
308
self.disable_hook = disable_hook
359
309
self.checker = None
360
310
self.checker_initiator_tag = None
361
311
self.disable_initiator_tag = None
362
312
self.checker_callback_tag = None
363
self.checker_command = config["checker"]
313
self.checker_command = config[u"checker"]
364
314
self.current_checker_command = None
365
315
self.last_connect = None
366
self._approved = None
367
self.approved_by_default = config.get("approved_by_default",
368
True)
369
self.approvals_pending = 0
370
self.approval_delay = string_to_delta(
371
config["approval_delay"])
372
self.approval_duration = string_to_delta(
373
config["approval_duration"])
374
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
375
316
376
def send_changedstate(self):
377
self.changedstate.acquire()
378
self.changedstate.notify_all()
379
self.changedstate.release()
380
381
317
def enable(self):
382
318
"""Start this client's checker and timeout hooks"""
383
if getattr(self, "enabled", False):
319
if getattr(self, u"enabled", False):
384
320
# Already enabled
385
321
return
386
self.send_changedstate()
387
322
self.last_enabled = datetime.datetime.utcnow()
388
323
# Schedule a new checker to be started an 'interval' from now,
389
324
# and every interval from then on.
398
333
# Also start a new checker *right now*.
399
334
self.start_checker()
400
335
401
def disable(self, quiet=True):
336
def disable(self, log=True):
402
337
"""Disable this client."""
403
338
if not getattr(self, "enabled", False):
404
339
return False
405
if not quiet:
406
self.send_changedstate()
407
if not quiet:
408
logger.info("Disabling client %s", self.name)
409
if getattr(self, "disable_initiator_tag", False):
340
if log:
341
logger.info(u"Disabling client %s", self.name)
342
if getattr(self, u"disable_initiator_tag", False):
410
343
gobject.source_remove(self.disable_initiator_tag)
411
344
self.disable_initiator_tag = None
412
if getattr(self, "checker_initiator_tag", False):
345
if getattr(self, u"checker_initiator_tag", False):
413
346
gobject.source_remove(self.checker_initiator_tag)
414
347
self.checker_initiator_tag = None
415
348
self.stop_checker()
430
363
if os.WIFEXITED(condition):
431
364
exitstatus = os.WEXITSTATUS(condition)
432
365
if exitstatus == 0:
433
logger.info("Checker for %(name)s succeeded",
366
logger.info(u"Checker for %(name)s succeeded",
434
367
vars(self))
435
368
self.checked_ok()
436
369
else:
437
logger.info("Checker for %(name)s failed",
370
logger.info(u"Checker for %(name)s failed",
438
371
vars(self))
439
372
else:
440
logger.warning("Checker for %(name)s crashed?",
373
logger.warning(u"Checker for %(name)s crashed?",
441
374
vars(self))
442
375
443
376
def checked_ok(self):
452
385
(self.timeout_milliseconds(),
453
386
self.disable))
454
387
455
def need_approval(self):
456
self.last_approval_request = datetime.datetime.utcnow()
457
458
388
def start_checker(self):
459
389
"""Start a new checker subprocess if one is not running.
460
390
466
396
# client would inevitably timeout, since no checker would get
467
397
# a chance to run to completion. If we instead leave running
468
398
# checkers alone, the checker would have to take more time
469
# than 'timeout' for the client to be disabled, which is as it
470
# should be.
399
# than 'timeout' for the client to be declared invalid, which
400
# is as it should be.
471
401
472
402
# If a checker exists, make sure it is not a zombie
473
403
try:
474
404
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
475
except (AttributeError, OSError) as error:
405
except (AttributeError, OSError), error:
476
406
if (isinstance(error, OSError)
477
407
and error.errno != errno.ECHILD):
478
408
raise error
479
409
else:
480
410
if pid:
481
logger.warning("Checker was a zombie")
411
logger.warning(u"Checker was a zombie")
482
412
gobject.source_remove(self.checker_callback_tag)
483
413
self.checker_callback(pid, status,
484
414
self.current_checker_command)
489
419
command = self.checker_command % self.host
490
420
except TypeError:
491
421
# Escape attributes for the shell
492
escaped_attrs = dict(
493
(attr,
494
re.escape(unicode(str(getattr(self, attr, "")),
495
errors=
496
'replace')))
497
for attr in
498
self.runtime_expansions)
499
422
escaped_attrs = dict((key,
423
re.escape(unicode(str(val),
424
errors=
425
u'replace')))
426
for key, val in
427
vars(self).iteritems())
500
428
try:
501
429
command = self.checker_command % escaped_attrs
502
except TypeError as error:
503
logger.error('Could not format string "%s":'
504
' %s', self.checker_command, error)
430
except TypeError, error:
431
logger.error(u'Could not format string "%s":'
432
u' %s', self.checker_command, error)
505
433
return True # Try again later
506
434
self.current_checker_command = command
507
435
try:
508
logger.info("Starting checker %r for %s",
436
logger.info(u"Starting checker %r for %s",
509
437
command, self.name)
510
438
# We don't need to redirect stdout and stderr, since
511
439
# in normal mode, that is already done by daemon(),
513
441
# always replaced by /dev/null.)
514
442
self.checker = subprocess.Popen(command,
515
443
close_fds=True,
516
shell=True, cwd="/")
444
shell=True, cwd=u"/")
517
445
self.checker_callback_tag = (gobject.child_watch_add
518
446
(self.checker.pid,
519
447
self.checker_callback,
524
452
if pid:
525
453
gobject.source_remove(self.checker_callback_tag)
526
454
self.checker_callback(pid, status, command)
527
except OSError as error:
528
logger.error("Failed to start subprocess: %s",
455
except OSError, error:
456
logger.error(u"Failed to start subprocess: %s",
529
457
error)
530
458
# Re-run this periodically if run by gobject.timeout_add
531
459
return True
535
463
if self.checker_callback_tag:
536
464
gobject.source_remove(self.checker_callback_tag)
537
465
self.checker_callback_tag = None
538
if getattr(self, "checker", None) is None:
466
if getattr(self, u"checker", None) is None:
539
467
return
540
logger.debug("Stopping checker for %(name)s", vars(self))
468
logger.debug(u"Stopping checker for %(name)s", vars(self))
541
469
try:
542
470
os.kill(self.checker.pid, signal.SIGTERM)
543
471
#time.sleep(0.5)
544
472
#if self.checker.poll() is None:
545
473
# os.kill(self.checker.pid, signal.SIGKILL)
546
except OSError as error:
474
except OSError, error:
547
475
if error.errno != errno.ESRCH: # No such process
548
476
raise
549
477
self.checker = None
550
551
def dbus_service_property(dbus_interface, signature="v",
552
access="readwrite", byte_arrays=False):
478
479
def still_valid(self):
480
"""Has the timeout not yet passed for this client?"""
481
if not getattr(self, u"enabled", False):
482
return False
483
now = datetime.datetime.utcnow()
484
if self.last_checked_ok is None:
485
return now < (self.created + self.timeout)
486
else:
487
return now < (self.last_checked_ok + self.timeout)
488
489
490
def dbus_service_property(dbus_interface, signature=u"v",
491
access=u"readwrite", byte_arrays=False):
553
492
"""Decorators for marking methods of a DBusObjectWithProperties to
554
493
become properties on the D-Bus.
555
494
560
499
dbus.service.method, except there is only "signature", since the
561
500
type from Get() and the type sent to Set() is the same.
562
501
"""
563
# Encoding deeply encoded byte arrays is not supported yet by the
564
# "Set" method, so we fail early here:
565
if byte_arrays and signature != "ay":
566
raise ValueError("Byte arrays not supported for non-'ay'"
567
" signature %r" % signature)
568
502
def decorator(func):
569
503
func._dbus_is_property = True
570
504
func._dbus_interface = dbus_interface
571
505
func._dbus_signature = signature
572
506
func._dbus_access = access
573
507
func._dbus_name = func.__name__
574
if func._dbus_name.endswith("_dbus_property"):
508
if func._dbus_name.endswith(u"_dbus_property"):
575
509
func._dbus_name = func._dbus_name[:-14]
576
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
510
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
577
511
return func
578
512
return decorator
579
513
607
541
608
542
@staticmethod
609
543
def _is_dbus_property(obj):
610
return getattr(obj, "_dbus_is_property", False)
544
return getattr(obj, u"_dbus_is_property", False)
611
545
612
546
def _get_all_dbus_properties(self):
613
547
"""Returns a generator of (name, attribute) pairs
621
555
property with the specified name and interface.
622
556
"""
623
557
for name in (property_name,
624
property_name + "_dbus_property"):
558
property_name + u"_dbus_property"):
625
559
prop = getattr(self, name, None)
626
560
if (prop is None
627
561
or not self._is_dbus_property(prop)
631
565
continue
632
566
return prop
633
567
# No such property
634
raise DBusPropertyNotFound(self.dbus_object_path + ":"
635
+ interface_name + "."
568
raise DBusPropertyNotFound(self.dbus_object_path + u":"
569
+ interface_name + u"."
636
570
+ property_name)
637
571
638
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
639
out_signature="v")
572
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
573
out_signature=u"v")
640
574
def Get(self, interface_name, property_name):
641
575
"""Standard D-Bus property Get() method, see D-Bus standard.
642
576
"""
643
577
prop = self._get_dbus_property(interface_name, property_name)
644
if prop._dbus_access == "write":
578
if prop._dbus_access == u"write":
645
579
raise DBusPropertyAccessException(property_name)
646
580
value = prop()
647
if not hasattr(value, "variant_level"):
581
if not hasattr(value, u"variant_level"):
648
582
return value
649
583
return type(value)(value, variant_level=value.variant_level+1)
650
584
651
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
585
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
652
586
def Set(self, interface_name, property_name, value):
653
587
"""Standard D-Bus property Set() method, see D-Bus standard.
654
588
"""
655
589
prop = self._get_dbus_property(interface_name, property_name)
656
if prop._dbus_access == "read":
590
if prop._dbus_access == u"read":
657
591
raise DBusPropertyAccessException(property_name)
658
if prop._dbus_get_args_options["byte_arrays"]:
659
# The byte_arrays option is not supported yet on
660
# signatures other than "ay".
661
if prop._dbus_signature != "ay":
662
raise ValueError
592
if prop._dbus_get_args_options[u"byte_arrays"]:
663
593
value = dbus.ByteArray(''.join(unichr(byte)
664
594
for byte in value))
665
595
prop(value)
666
596
667
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
668
out_signature="a{sv}")
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
598
out_signature=u"a{sv}")
669
599
def GetAll(self, interface_name):
670
600
"""Standard D-Bus property GetAll() method, see D-Bus
671
601
standard.
679
609
# Interface non-empty but did not match
680
610
continue
681
611
# Ignore write-only properties
682
if prop._dbus_access == "write":
612
if prop._dbus_access == u"write":
683
613
continue
684
614
value = prop()
685
if not hasattr(value, "variant_level"):
615
if not hasattr(value, u"variant_level"):
686
616
all[name] = value
687
617
continue
688
618
all[name] = type(value)(value, variant_level=
689
619
value.variant_level+1)
690
return dbus.Dictionary(all, signature="sv")
620
return dbus.Dictionary(all, signature=u"sv")
691
621
692
622
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
693
out_signature="s",
623
out_signature=u"s",
694
624
path_keyword='object_path',
695
625
connection_keyword='connection')
696
626
def Introspect(self, object_path, connection):
701
631
try:
702
632
document = xml.dom.minidom.parseString(xmlstring)
703
633
def make_tag(document, name, prop):
704
e = document.createElement("property")
705
e.setAttribute("name", name)
706
e.setAttribute("type", prop._dbus_signature)
707
e.setAttribute("access", prop._dbus_access)
634
e = document.createElement(u"property")
635
e.setAttribute(u"name", name)
636
e.setAttribute(u"type", prop._dbus_signature)
637
e.setAttribute(u"access", prop._dbus_access)
708
638
return e
709
for if_tag in document.getElementsByTagName("interface"):
639
for if_tag in document.getElementsByTagName(u"interface"):
710
640
for tag in (make_tag(document, name, prop)
711
641
for name, prop
712
642
in self._get_all_dbus_properties()
713
643
if prop._dbus_interface
714
== if_tag.getAttribute("name")):
644
== if_tag.getAttribute(u"name")):
715
645
if_tag.appendChild(tag)
716
646
# Add the names to the return values for the
717
647
# "org.freedesktop.DBus.Properties" methods
718
if (if_tag.getAttribute("name")
719
== "org.freedesktop.DBus.Properties"):
720
for cn in if_tag.getElementsByTagName("method"):
721
if cn.getAttribute("name") == "Get":
722
for arg in cn.getElementsByTagName("arg"):
723
if (arg.getAttribute("direction")
724
== "out"):
725
arg.setAttribute("name", "value")
726
elif cn.getAttribute("name") == "GetAll":
727
for arg in cn.getElementsByTagName("arg"):
728
if (arg.getAttribute("direction")
729
== "out"):
730
arg.setAttribute("name", "props")
731
xmlstring = document.toxml("utf-8")
648
if (if_tag.getAttribute(u"name")
649
== u"org.freedesktop.DBus.Properties"):
650
for cn in if_tag.getElementsByTagName(u"method"):
651
if cn.getAttribute(u"name") == u"Get":
652
for arg in cn.getElementsByTagName(u"arg"):
653
if (arg.getAttribute(u"direction")
654
== u"out"):
655
arg.setAttribute(u"name", u"value")
656
elif cn.getAttribute(u"name") == u"GetAll":
657
for arg in cn.getElementsByTagName(u"arg"):
658
if (arg.getAttribute(u"direction")
659
== u"out"):
660
arg.setAttribute(u"name", u"props")
661
xmlstring = document.toxml(u"utf-8")
732
662
document.unlink()
733
663
except (AttributeError, xml.dom.DOMException,
734
xml.parsers.expat.ExpatError) as error:
735
logger.error("Failed to override Introspection method",
664
xml.parsers.expat.ExpatError), error:
665
logger.error(u"Failed to override Introspection method",
736
666
error)
737
667
return xmlstring
738
668
744
674
dbus_object_path: dbus.ObjectPath
745
675
bus: dbus.SystemBus()
746
676
"""
747
748
runtime_expansions = (Client.runtime_expansions
749
+ ("dbus_object_path",))
750
751
677
# dbus.service.Object doesn't use super(), so we can't either.
752
678
753
679
def __init__(self, bus = None, *args, **kwargs):
754
self._approvals_pending = 0
755
680
self.bus = bus
756
681
Client.__init__(self, *args, **kwargs)
757
682
# Only now, when this client is initialized, can it show up on
758
683
# the D-Bus
759
client_object_name = unicode(self.name).translate(
760
{ord("."): ord("_"),
761
ord("-"): ord("_")})
762
684
self.dbus_object_path = (dbus.ObjectPath
763
("/clients/" + client_object_name))
685
(u"/clients/"
686
+ self.name.replace(u".", u"_")))
764
687
DBusObjectWithProperties.__init__(self, self.bus,
765
688
self.dbus_object_path)
766
767
def _get_approvals_pending(self):
768
return self._approvals_pending
769
def _set_approvals_pending(self, value):
770
old_value = self._approvals_pending
771
self._approvals_pending = value
772
bval = bool(value)
773
if (hasattr(self, "dbus_object_path")
774
and bval is not bool(old_value)):
775
dbus_bool = dbus.Boolean(bval, variant_level=1)
776
self.PropertyChanged(dbus.String("ApprovalPending"),
777
dbus_bool)
778
779
approvals_pending = property(_get_approvals_pending,
780
_set_approvals_pending)
781
del _get_approvals_pending, _set_approvals_pending
782
689
783
690
@staticmethod
784
691
def _datetime_to_dbus(dt, variant_level=0):
787
694
variant_level=variant_level)
788
695
789
696
def enable(self):
790
oldstate = getattr(self, "enabled", False)
697
oldstate = getattr(self, u"enabled", False)
791
698
r = Client.enable(self)
792
699
if oldstate != self.enabled:
793
700
# Emit D-Bus signals
794
self.PropertyChanged(dbus.String("Enabled"),
701
self.PropertyChanged(dbus.String(u"enabled"),
795
702
dbus.Boolean(True, variant_level=1))
796
703
self.PropertyChanged(
797
dbus.String("LastEnabled"),
704
dbus.String(u"last_enabled"),
798
705
self._datetime_to_dbus(self.last_enabled,
799
706
variant_level=1))
800
707
return r
801
708
802
def disable(self, quiet = False):
803
oldstate = getattr(self, "enabled", False)
804
r = Client.disable(self, quiet=quiet)
805
if not quiet and oldstate != self.enabled:
709
def disable(self, signal = True):
710
oldstate = getattr(self, u"enabled", False)
711
r = Client.disable(self, log=signal)
712
if signal and oldstate != self.enabled:
806
713
# Emit D-Bus signal
807
self.PropertyChanged(dbus.String("Enabled"),
714
self.PropertyChanged(dbus.String(u"enabled"),
808
715
dbus.Boolean(False, variant_level=1))
809
716
return r
810
717
813
720
self.remove_from_connection()
814
721
except LookupError:
815
722
pass
816
if hasattr(DBusObjectWithProperties, "__del__"):
723
if hasattr(DBusObjectWithProperties, u"__del__"):
817
724
DBusObjectWithProperties.__del__(self, *args, **kwargs)
818
725
Client.__del__(self, *args, **kwargs)
819
726
822
729
self.checker_callback_tag = None
823
730
self.checker = None
824
731
# Emit D-Bus signal
825
self.PropertyChanged(dbus.String("CheckerRunning"),
732
self.PropertyChanged(dbus.String(u"checker_running"),
826
733
dbus.Boolean(False, variant_level=1))
827
734
if os.WIFEXITED(condition):
828
735
exitstatus = os.WEXITSTATUS(condition)
840
747
*args, **kwargs)
841
748
842
749
def checked_ok(self, *args, **kwargs):
843
Client.checked_ok(self, *args, **kwargs)
750
r = Client.checked_ok(self, *args, **kwargs)
844
751
# Emit D-Bus signal
845
752
self.PropertyChanged(
846
dbus.String("LastCheckedOK"),
753
dbus.String(u"last_checked_ok"),
847
754
(self._datetime_to_dbus(self.last_checked_ok,
848
755
variant_level=1)))
849
850
def need_approval(self, *args, **kwargs):
851
r = Client.need_approval(self, *args, **kwargs)
852
# Emit D-Bus signal
853
self.PropertyChanged(
854
dbus.String("LastApprovalRequest"),
855
(self._datetime_to_dbus(self.last_approval_request,
856
variant_level=1)))
857
756
return r
858
757
859
758
def start_checker(self, *args, **kwargs):
869
768
# Emit D-Bus signal
870
769
self.CheckerStarted(self.current_checker_command)
871
770
self.PropertyChanged(
872
dbus.String("CheckerRunning"),
771
dbus.String(u"checker_running"),
873
772
dbus.Boolean(True, variant_level=1))
874
773
return r
875
774
876
775
def stop_checker(self, *args, **kwargs):
877
old_checker = getattr(self, "checker", None)
776
old_checker = getattr(self, u"checker", None)
878
777
r = Client.stop_checker(self, *args, **kwargs)
879
778
if (old_checker is not None
880
and getattr(self, "checker", None) is None):
881
self.PropertyChanged(dbus.String("CheckerRunning"),
779
and getattr(self, u"checker", None) is None):
780
self.PropertyChanged(dbus.String(u"checker_running"),
882
781
dbus.Boolean(False, variant_level=1))
883
782
return r
884
885
def _reset_approved(self):
886
self._approved = None
887
return False
888
889
def approve(self, value=True):
890
self.send_changedstate()
891
self._approved = value
892
gobject.timeout_add(self._timedelta_to_milliseconds
893
(self.approval_duration),
894
self._reset_approved)
895
896
897
## D-Bus methods, signals & properties
898
_interface = "se.bsnet.fukt.Mandos.Client"
899
900
## Signals
783
784
## D-Bus methods & signals
785
_interface = u"se.bsnet.fukt.Mandos.Client"
786
787
# CheckedOK - method
788
@dbus.service.method(_interface)
789
def CheckedOK(self):
790
return self.checked_ok()
901
791
902
792
# CheckerCompleted - signal
903
@dbus.service.signal(_interface, signature="nxs")
793
@dbus.service.signal(_interface, signature=u"nxs")
904
794
def CheckerCompleted(self, exitcode, waitstatus, command):
905
795
"D-Bus signal"
906
796
pass
907
797
908
798
# CheckerStarted - signal
909
@dbus.service.signal(_interface, signature="s")
799
@dbus.service.signal(_interface, signature=u"s")
910
800
def CheckerStarted(self, command):
911
801
"D-Bus signal"
912
802
pass
913
803
914
804
# PropertyChanged - signal
915
@dbus.service.signal(_interface, signature="sv")
805
@dbus.service.signal(_interface, signature=u"sv")
916
806
def PropertyChanged(self, property, value):
917
807
"D-Bus signal"
918
808
pass
920
810
# GotSecret - signal
921
811
@dbus.service.signal(_interface)
922
812
def GotSecret(self):
923
"""D-Bus signal
924
Is sent after a successful transfer of secret from the Mandos
925
server to mandos-client
926
"""
813
"D-Bus signal"
927
814
pass
928
815
929
816
# Rejected - signal
930
@dbus.service.signal(_interface, signature="s")
931
def Rejected(self, reason):
817
@dbus.service.signal(_interface)
818
def Rejected(self):
932
819
"D-Bus signal"
933
820
pass
934
821
935
# NeedApproval - signal
936
@dbus.service.signal(_interface, signature="tb")
937
def NeedApproval(self, timeout, default):
938
"D-Bus signal"
939
return self.need_approval()
940
941
## Methods
942
943
# Approve - method
944
@dbus.service.method(_interface, in_signature="b")
945
def Approve(self, value):
946
self.approve(value)
947
948
# CheckedOK - method
949
@dbus.service.method(_interface)
950
def CheckedOK(self):
951
self.checked_ok()
952
953
822
# Enable - method
954
823
@dbus.service.method(_interface)
955
824
def Enable(self):
973
842
def StopChecker(self):
974
843
self.stop_checker()
975
844
976
## Properties
977
978
# ApprovalPending - property
979
@dbus_service_property(_interface, signature="b", access="read")
980
def ApprovalPending_dbus_property(self):
981
return dbus.Boolean(bool(self.approvals_pending))
982
983
# ApprovedByDefault - property
984
@dbus_service_property(_interface, signature="b",
985
access="readwrite")
986
def ApprovedByDefault_dbus_property(self, value=None):
987
if value is None: # get
988
return dbus.Boolean(self.approved_by_default)
989
self.approved_by_default = bool(value)
990
# Emit D-Bus signal
991
self.PropertyChanged(dbus.String("ApprovedByDefault"),
992
dbus.Boolean(value, variant_level=1))
993
994
# ApprovalDelay - property
995
@dbus_service_property(_interface, signature="t",
996
access="readwrite")
997
def ApprovalDelay_dbus_property(self, value=None):
998
if value is None: # get
999
return dbus.UInt64(self.approval_delay_milliseconds())
1000
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1001
# Emit D-Bus signal
1002
self.PropertyChanged(dbus.String("ApprovalDelay"),
1003
dbus.UInt64(value, variant_level=1))
1004
1005
# ApprovalDuration - property
1006
@dbus_service_property(_interface, signature="t",
1007
access="readwrite")
1008
def ApprovalDuration_dbus_property(self, value=None):
1009
if value is None: # get
1010
return dbus.UInt64(self._timedelta_to_milliseconds(
1011
self.approval_duration))
1012
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1013
# Emit D-Bus signal
1014
self.PropertyChanged(dbus.String("ApprovalDuration"),
1015
dbus.UInt64(value, variant_level=1))
1016
1017
# Name - property
1018
@dbus_service_property(_interface, signature="s", access="read")
1019
def Name_dbus_property(self):
845
# name - property
846
@dbus_service_property(_interface, signature=u"s", access=u"read")
847
def name_dbus_property(self):
1020
848
return dbus.String(self.name)
1021
849
1022
# Fingerprint - property
1023
@dbus_service_property(_interface, signature="s", access="read")
1024
def Fingerprint_dbus_property(self):
850
# fingerprint - property
851
@dbus_service_property(_interface, signature=u"s", access=u"read")
852
def fingerprint_dbus_property(self):
1025
853
return dbus.String(self.fingerprint)
1026
854
1027
# Host - property
1028
@dbus_service_property(_interface, signature="s",
1029
access="readwrite")
1030
def Host_dbus_property(self, value=None):
855
# host - property
856
@dbus_service_property(_interface, signature=u"s",
857
access=u"readwrite")
858
def host_dbus_property(self, value=None):
1031
859
if value is None: # get
1032
860
return dbus.String(self.host)
1033
861
self.host = value
1034
862
# Emit D-Bus signal
1035
self.PropertyChanged(dbus.String("Host"),
863
self.PropertyChanged(dbus.String(u"host"),
1036
864
dbus.String(value, variant_level=1))
1037
865
1038
# Created - property
1039
@dbus_service_property(_interface, signature="s", access="read")
1040
def Created_dbus_property(self):
866
# created - property
867
@dbus_service_property(_interface, signature=u"s", access=u"read")
868
def created_dbus_property(self):
1041
869
return dbus.String(self._datetime_to_dbus(self.created))
1042
870
1043
# LastEnabled - property
1044
@dbus_service_property(_interface, signature="s", access="read")
1045
def LastEnabled_dbus_property(self):
871
# last_enabled - property
872
@dbus_service_property(_interface, signature=u"s", access=u"read")
873
def last_enabled_dbus_property(self):
1046
874
if self.last_enabled is None:
1047
return dbus.String("")
875
return dbus.String(u"")
1048
876
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1049
877
1050
# Enabled - property
1051
@dbus_service_property(_interface, signature="b",
1052
access="readwrite")
1053
def Enabled_dbus_property(self, value=None):
878
# enabled - property
879
@dbus_service_property(_interface, signature=u"b",
880
access=u"readwrite")
881
def enabled_dbus_property(self, value=None):
1054
882
if value is None: # get
1055
883
return dbus.Boolean(self.enabled)
1056
884
if value:
1058
886
else:
1059
887
self.disable()
1060
888
1061
# LastCheckedOK - property
1062
@dbus_service_property(_interface, signature="s",
1063
access="readwrite")
1064
def LastCheckedOK_dbus_property(self, value=None):
889
# last_checked_ok - property
890
@dbus_service_property(_interface, signature=u"s",
891
access=u"readwrite")
892
def last_checked_ok_dbus_property(self, value=None):
1065
893
if value is not None:
1066
894
self.checked_ok()
1067
895
return
1068
896
if self.last_checked_ok is None:
1069
return dbus.String("")
897
return dbus.String(u"")
1070
898
return dbus.String(self._datetime_to_dbus(self
1071
899
.last_checked_ok))
1072
900
1073
# LastApprovalRequest - property
1074
@dbus_service_property(_interface, signature="s", access="read")
1075
def LastApprovalRequest_dbus_property(self):
1076
if self.last_approval_request is None:
1077
return dbus.String("")
1078
return dbus.String(self.
1079
_datetime_to_dbus(self
1080
.last_approval_request))
1081
1082
# Timeout - property
1083
@dbus_service_property(_interface, signature="t",
1084
access="readwrite")
1085
def Timeout_dbus_property(self, value=None):
901
# timeout - property
902
@dbus_service_property(_interface, signature=u"t",
903
access=u"readwrite")
904
def timeout_dbus_property(self, value=None):
1086
905
if value is None: # get
1087
906
return dbus.UInt64(self.timeout_milliseconds())
1088
907
self.timeout = datetime.timedelta(0, 0, 0, value)
1089
908
# Emit D-Bus signal
1090
self.PropertyChanged(dbus.String("Timeout"),
909
self.PropertyChanged(dbus.String(u"timeout"),
1091
910
dbus.UInt64(value, variant_level=1))
1092
if getattr(self, "disable_initiator_tag", None) is None:
911
if getattr(self, u"disable_initiator_tag", None) is None:
1093
912
return
1094
913
# Reschedule timeout
1095
914
gobject.source_remove(self.disable_initiator_tag)
1107
926
self.disable_initiator_tag = (gobject.timeout_add
1108
927
(time_to_die, self.disable))
1109
928
1110
# Interval - property
1111
@dbus_service_property(_interface, signature="t",
1112
access="readwrite")
1113
def Interval_dbus_property(self, value=None):
929
# interval - property
930
@dbus_service_property(_interface, signature=u"t",
931
access=u"readwrite")
932
def interval_dbus_property(self, value=None):
1114
933
if value is None: # get
1115
934
return dbus.UInt64(self.interval_milliseconds())
1116
935
self.interval = datetime.timedelta(0, 0, 0, value)
1117
936
# Emit D-Bus signal
1118
self.PropertyChanged(dbus.String("Interval"),
937
self.PropertyChanged(dbus.String(u"interval"),
1119
938
dbus.UInt64(value, variant_level=1))
1120
if getattr(self, "checker_initiator_tag", None) is None:
939
if getattr(self, u"checker_initiator_tag", None) is None:
1121
940
return
1122
941
# Reschedule checker run
1123
942
gobject.source_remove(self.checker_initiator_tag)
1125
944
(value, self.start_checker))
1126
945
self.start_checker() # Start one now, too
1127
946
1128
# Checker - property
1129
@dbus_service_property(_interface, signature="s",
1130
access="readwrite")
1131
def Checker_dbus_property(self, value=None):
947
# checker - property
948
@dbus_service_property(_interface, signature=u"s",
949
access=u"readwrite")
950
def checker_dbus_property(self, value=None):
1132
951
if value is None: # get
1133
952
return dbus.String(self.checker_command)
1134
953
self.checker_command = value
1135
954
# Emit D-Bus signal
1136
self.PropertyChanged(dbus.String("Checker"),
955
self.PropertyChanged(dbus.String(u"checker"),
1137
956
dbus.String(self.checker_command,
1138
957
variant_level=1))
1139
958
1140
# CheckerRunning - property
1141
@dbus_service_property(_interface, signature="b",
1142
access="readwrite")
1143
def CheckerRunning_dbus_property(self, value=None):
959
# checker_running - property
960
@dbus_service_property(_interface, signature=u"b",
961
access=u"readwrite")
962
def checker_running_dbus_property(self, value=None):
1144
963
if value is None: # get
1145
964
return dbus.Boolean(self.checker is not None)
1146
965
if value:
1148
967
else:
1149
968
self.stop_checker()
1150
969
1151
# ObjectPath - property
1152
@dbus_service_property(_interface, signature="o", access="read")
1153
def ObjectPath_dbus_property(self):
970
# object_path - property
971
@dbus_service_property(_interface, signature=u"o", access=u"read")
972
def object_path_dbus_property(self):
1154
973
return self.dbus_object_path # is already a dbus.ObjectPath
1155
974
1156
# Secret = property
1157
@dbus_service_property(_interface, signature="ay",
1158
access="write", byte_arrays=True)
1159
def Secret_dbus_property(self, value):
975
# secret = property
976
@dbus_service_property(_interface, signature=u"ay",
977
access=u"write", byte_arrays=True)
978
def secret_dbus_property(self, value):
1160
979
self.secret = str(value)
1161
980
1162
981
del _interface
1163
982
1164
983
1165
class ProxyClient(object):
1166
def __init__(self, child_pipe, fpr, address):
1167
self._pipe = child_pipe
1168
self._pipe.send(('init', fpr, address))
1169
if not self._pipe.recv():
1170
raise KeyError()
1171
1172
def __getattribute__(self, name):
1173
if(name == '_pipe'):
1174
return super(ProxyClient, self).__getattribute__(name)
1175
self._pipe.send(('getattr', name))
1176
data = self._pipe.recv()
1177
if data[0] == 'data':
1178
return data[1]
1179
if data[0] == 'function':
1180
def func(*args, **kwargs):
1181
self._pipe.send(('funcall', name, args, kwargs))
1182
return self._pipe.recv()[1]
1183
return func
1184
1185
def __setattr__(self, name, value):
1186
if(name == '_pipe'):
1187
return super(ProxyClient, self).__setattr__(name, value)
1188
self._pipe.send(('setattr', name, value))
1189
1190
1191
984
class ClientHandler(socketserver.BaseRequestHandler, object):
1192
985
"""A class to handle client connections.
1193
986
1195
988
Note: This will run in its own forked process."""
1196
989
1197
990
def handle(self):
1198
with contextlib.closing(self.server.child_pipe) as child_pipe:
1199
logger.info("TCP connection from: %s",
1200
unicode(self.client_address))
1201
logger.debug("Pipe FD: %d",
1202
self.server.child_pipe.fileno())
1203
991
logger.info(u"TCP connection from: %s",
992
unicode(self.client_address))
993
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
994
# Open IPC pipe to parent process
995
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1204
996
session = (gnutls.connection
1205
997
.ClientSession(self.request,
1206
998
gnutls.connection
1207
999
.X509Credentials()))
1208
1000
1001
line = self.request.makefile().readline()
1002
logger.debug(u"Protocol version: %r", line)
1003
try:
1004
if int(line.strip().split()[0]) > 1:
1005
raise RuntimeError
1006
except (ValueError, IndexError, RuntimeError), error:
1007
logger.error(u"Unknown protocol version: %s", error)
1008
return
1009
1209
1010
# Note: gnutls.connection.X509Credentials is really a
1210
1011
# generic GnuTLS certificate credentials object so long as
1211
1012
# no X.509 keys are added to it. Therefore, we can use it
1212
1013
# here despite using OpenPGP certificates.
1213
1214
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1215
# "+AES-256-CBC", "+SHA1",
1216
# "+COMP-NULL", "+CTYPE-OPENPGP",
1217
# "+DHE-DSS"))
1014
1015
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1016
# u"+AES-256-CBC", u"+SHA1",
1017
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1018
# u"+DHE-DSS"))
1218
1019
# Use a fallback default, since this MUST be set.
1219
1020
priority = self.server.gnutls_priority
1220
1021
if priority is None:
1221
priority = "NORMAL"
1022
priority = u"NORMAL"
1222
1023
(gnutls.library.functions
1223
1024
.gnutls_priority_set_direct(session._c_object,
1224
1025
priority, None))
1225
1226
# Start communication using the Mandos protocol
1227
# Get protocol number
1228
line = self.request.makefile().readline()
1229
logger.debug("Protocol version: %r", line)
1230
try:
1231
if int(line.strip().split()[0]) > 1:
1232
raise RuntimeError
1233
except (ValueError, IndexError, RuntimeError) as error:
1234
logger.error("Unknown protocol version: %s", error)
1235
return
1236
1237
# Start GnuTLS connection
1026
1238
1027
try:
1239
1028
session.handshake()
1240
except gnutls.errors.GNUTLSError as error:
1241
logger.warning("Handshake failed: %s", error)
1029
except gnutls.errors.GNUTLSError, error:
1030
logger.warning(u"Handshake failed: %s", error)
1242
1031
# Do not run session.bye() here: the session is not
1243
1032
# established. Just abandon the request.
1244
1033
return
1245
logger.debug("Handshake succeeded")
1246
1247
approval_required = False
1034
logger.debug(u"Handshake succeeded")
1248
1035
try:
1249
try:
1250
fpr = self.fingerprint(self.peer_certificate
1251
(session))
1252
except (TypeError,
1253
gnutls.errors.GNUTLSError) as error:
1254
logger.warning("Bad certificate: %s", error)
1255
return
1256
logger.debug("Fingerprint: %s", fpr)
1257
1258
try:
1259
client = ProxyClient(child_pipe, fpr,
1260
self.client_address)
1261
except KeyError:
1262
return
1263
1264
if client.approval_delay:
1265
delay = client.approval_delay
1266
client.approvals_pending += 1
1267
approval_required = True
1268
1269
while True:
1270
if not client.enabled:
1271
logger.warning("Client %s is disabled",
1272
client.name)
1273
if self.server.use_dbus:
1274
# Emit D-Bus signal
1275
client.Rejected("Disabled")
1276
return
1277
1278
if client._approved or not client.approval_delay:
1279
#We are approved or approval is disabled
1280
break
1281
elif client._approved is None:
1282
logger.info("Client %s needs approval",
1283
client.name)
1284
if self.server.use_dbus:
1285
# Emit D-Bus signal
1286
client.NeedApproval(
1287
client.approval_delay_milliseconds(),
1288
client.approved_by_default)
1289
else:
1290
logger.warning("Client %s was not approved",
1291
client.name)
1292
if self.server.use_dbus:
1293
# Emit D-Bus signal
1294
client.Rejected("Denied")
1295
return
1296
1297
#wait until timeout or approved
1298
#x = float(client._timedelta_to_milliseconds(delay))
1299
time = datetime.datetime.now()
1300
client.changedstate.acquire()
1301
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1302
client.changedstate.release()
1303
time2 = datetime.datetime.now()
1304
if (time2 - time) >= delay:
1305
if not client.approved_by_default:
1306
logger.warning("Client %s timed out while"
1307
" waiting for approval",
1308
client.name)
1309
if self.server.use_dbus:
1310
# Emit D-Bus signal
1311
client.Rejected("Approval timed out")
1312
return
1313
else:
1314
break
1315
else:
1316
delay -= time2 - time
1317
1318
sent_size = 0
1319
while sent_size < len(client.secret):
1320
try:
1321
sent = session.send(client.secret[sent_size:])
1322
except gnutls.errors.GNUTLSError as error:
1323
logger.warning("gnutls send failed")
1324
return
1325
logger.debug("Sent: %d, remaining: %d",
1326
sent, len(client.secret)
1327
- (sent_size + sent))
1328
sent_size += sent
1329
1330
logger.info("Sending secret to %s", client.name)
1331
# bump the timeout as if seen
1332
client.checked_ok()
1333
if self.server.use_dbus:
1334
# Emit D-Bus signal
1335
client.GotSecret()
1036
fpr = self.fingerprint(self.peer_certificate(session))
1037
except (TypeError, gnutls.errors.GNUTLSError), error:
1038
logger.warning(u"Bad certificate: %s", error)
1039
session.bye()
1040
return
1041
logger.debug(u"Fingerprint: %s", fpr)
1336
1042
1337
finally:
1338
if approval_required:
1339
client.approvals_pending -= 1
1340
try:
1341
session.bye()
1342
except gnutls.errors.GNUTLSError as error:
1343
logger.warning("GnuTLS bye failed")
1043
for c in self.server.clients:
1044
if c.fingerprint == fpr:
1045
client = c
1046
break
1047
else:
1048
ipc.write(u"NOTFOUND %s %s\n"
1049
% (fpr, unicode(self.client_address)))
1050
session.bye()
1051
return
1052
# Have to check if client.still_valid(), since it is
1053
# possible that the client timed out while establishing
1054
# the GnuTLS session.
1055
if not client.still_valid():
1056
ipc.write(u"INVALID %s\n" % client.name)
1057
session.bye()
1058
return
1059
ipc.write(u"SENDING %s\n" % client.name)
1060
sent_size = 0
1061
while sent_size < len(client.secret):
1062
sent = session.send(client.secret[sent_size:])
1063
logger.debug(u"Sent: %d, remaining: %d",
1064
sent, len(client.secret)
1065
- (sent_size + sent))
1066
sent_size += sent
1067
session.bye()
1344
1068
1345
1069
@staticmethod
1346
1070
def peer_certificate(session):
1356
1080
.gnutls_certificate_get_peers
1357
1081
(session._c_object, ctypes.byref(list_size)))
1358
1082
if not bool(cert_list) and list_size.value != 0:
1359
raise gnutls.errors.GNUTLSError("error getting peer"
1360
" certificate")
1083
raise gnutls.errors.GNUTLSError(u"error getting peer"
1084
u" certificate")
1361
1085
if list_size.value == 0:
1362
1086
return None
1363
1087
cert = cert_list[0]
1389
1113
if crtverify.value != 0:
1390
1114
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1391
1115
raise (gnutls.errors.CertificateSecurityError
1392
("Verify failed"))
1116
(u"Verify failed"))
1393
1117
# New buffer for the fingerprint
1394
1118
buf = ctypes.create_string_buffer(20)
1395
1119
buf_len = ctypes.c_size_t()
1402
1126
# Convert the buffer to a Python bytestring
1403
1127
fpr = ctypes.string_at(buf, buf_len.value)
1404
1128
# Convert the bytestring to hexadecimal notation
1405
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1129
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1406
1130
return hex_fpr
1407
1131
1408
1132
1409
class MultiprocessingMixIn(object):
1410
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1411
def sub_process_main(self, request, address):
1412
try:
1413
self.finish_request(request, address)
1414
except:
1415
self.handle_error(request, address)
1416
self.close_request(request)
1417
1418
def process_request(self, request, address):
1419
"""Start a new process to process the request."""
1420
multiprocessing.Process(target = self.sub_process_main,
1421
args = (request, address)).start()
1422
1423
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1424
""" adds a pipe to the MixIn """
1133
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1134
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1425
1135
def process_request(self, request, client_address):
1426
1136
"""Overrides and wraps the original process_request().
1427
1137
1428
1138
This function creates a new pipe in self.pipe
1429
1139
"""
1430
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1431
1432
super(MultiprocessingMixInWithPipe,
1140
self.pipe = os.pipe()
1141
super(ForkingMixInWithPipe,
1433
1142
self).process_request(request, client_address)
1434
self.child_pipe.close()
1435
self.add_pipe(parent_pipe)
1436
1437
def add_pipe(self, parent_pipe):
1143
os.close(self.pipe[1]) # close write end
1144
self.add_pipe(self.pipe[0])
1145
def add_pipe(self, pipe):
1438
1146
"""Dummy function; override as necessary"""
1439
raise NotImplementedError
1440
1441
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1147
os.close(pipe)
1148
1149
1150
class IPv6_TCPServer(ForkingMixInWithPipe,
1442
1151
socketserver.TCPServer, object):
1443
1152
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1444
1153
1460
1169
bind to an address or port if they were not specified."""
1461
1170
if self.interface is not None:
1462
1171
if SO_BINDTODEVICE is None:
1463
logger.error("SO_BINDTODEVICE does not exist;"
1464
" cannot bind to interface %s",
1172
logger.error(u"SO_BINDTODEVICE does not exist;"
1173
u" cannot bind to interface %s",
1465
1174
self.interface)
1466
1175
else:
1467
1176
try:
1468
1177
self.socket.setsockopt(socket.SOL_SOCKET,
1469
1178
SO_BINDTODEVICE,
1470
1179
str(self.interface
1471
+ '\0'))
1472
except socket.error as error:
1180
+ u'\0'))
1181
except socket.error, error:
1473
1182
if error[0] == errno.EPERM:
1474
logger.error("No permission to"
1475
" bind to interface %s",
1183
logger.error(u"No permission to"
1184
u" bind to interface %s",
1476
1185
self.interface)
1477
1186
elif error[0] == errno.ENOPROTOOPT:
1478
logger.error("SO_BINDTODEVICE not available;"
1479
" cannot bind to interface %s",
1187
logger.error(u"SO_BINDTODEVICE not available;"
1188
u" cannot bind to interface %s",
1480
1189
self.interface)
1481
1190
else:
1482
1191
raise
1484
1193
if self.server_address[0] or self.server_address[1]:
1485
1194
if not self.server_address[0]:
1486
1195
if self.address_family == socket.AF_INET6:
1487
any_address = "::" # in6addr_any
1196
any_address = u"::" # in6addr_any
1488
1197
else:
1489
1198
any_address = socket.INADDR_ANY
1490
1199
self.server_address = (any_address,
1529
1238
return socketserver.TCPServer.server_activate(self)
1530
1239
def enable(self):
1531
1240
self.enabled = True
1532
def add_pipe(self, parent_pipe):
1241
def add_pipe(self, pipe):
1533
1242
# Call "handle_ipc" for both data and EOF events
1534
gobject.io_add_watch(parent_pipe.fileno(),
1535
gobject.IO_IN | gobject.IO_HUP,
1536
functools.partial(self.handle_ipc,
1537
parent_pipe = parent_pipe))
1538
1539
def handle_ipc(self, source, condition, parent_pipe=None,
1540
client_object=None):
1243
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1244
self.handle_ipc)
1245
def handle_ipc(self, source, condition, file_objects={}):
1541
1246
condition_names = {
1542
gobject.IO_IN: "IN", # There is data to read.
1543
gobject.IO_OUT: "OUT", # Data can be written (without
1247
gobject.IO_IN: u"IN", # There is data to read.
1248
gobject.IO_OUT: u"OUT", # Data can be written (without
1544
1249
# blocking).
1545
gobject.IO_PRI: "PRI", # There is urgent data to read.
1546
gobject.IO_ERR: "ERR", # Error condition.
1547
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1250
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1251
gobject.IO_ERR: u"ERR", # Error condition.
1252
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1548
1253
# broken, usually for pipes and
1549
1254
# sockets).
1550
1255
}
1552
1257
for cond, name in
1553
1258
condition_names.iteritems()
1554
1259
if cond & condition)
1555
# error or the other end of multiprocessing.Pipe has closed
1556
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1557
return False
1558
1559
# Read a request from the child
1560
request = parent_pipe.recv()
1561
command = request[0]
1562
1563
if command == 'init':
1564
fpr = request[1]
1565
address = request[2]
1566
1567
for c in self.clients:
1568
if c.fingerprint == fpr:
1569
client = c
1570
break
1571
else:
1572
logger.warning("Client not found for fingerprint: %s, ad"
1573
"dress: %s", fpr, address)
1574
if self.use_dbus:
1575
# Emit D-Bus signal
1576
mandos_dbus_service.ClientNotFound(fpr, address[0])
1577
parent_pipe.send(False)
1578
return False
1579
1580
gobject.io_add_watch(parent_pipe.fileno(),
1581
gobject.IO_IN | gobject.IO_HUP,
1582
functools.partial(self.handle_ipc,
1583
parent_pipe = parent_pipe,
1584
client_object = client))
1585
parent_pipe.send(True)
1586
# remove the old hook in favor of the new above hook on same fileno
1587
return False
1588
if command == 'funcall':
1589
funcname = request[1]
1590
args = request[2]
1591
kwargs = request[3]
1592
1593
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1594
1595
if command == 'getattr':
1596
attrname = request[1]
1597
if callable(client_object.__getattribute__(attrname)):
1598
parent_pipe.send(('function',))
1599
else:
1600
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1601
1602
if command == 'setattr':
1603
attrname = request[1]
1604
value = request[2]
1605
setattr(client_object, attrname, value)
1606
1260
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1261
conditions_string)
1262
1263
# Turn the pipe file descriptor into a Python file object
1264
if source not in file_objects:
1265
file_objects[source] = os.fdopen(source, u"r", 1)
1266
1267
# Read a line from the file object
1268
cmdline = file_objects[source].readline()
1269
if not cmdline: # Empty line means end of file
1270
# close the IPC pipe
1271
file_objects[source].close()
1272
del file_objects[source]
1273
1274
# Stop calling this function
1275
return False
1276
1277
logger.debug(u"IPC command: %r", cmdline)
1278
1279
# Parse and act on command
1280
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1281
1282
if cmd == u"NOTFOUND":
1283
logger.warning(u"Client not found for fingerprint: %s",
1284
args)
1285
if self.use_dbus:
1286
# Emit D-Bus signal
1287
mandos_dbus_service.ClientNotFound(args)
1288
elif cmd == u"INVALID":
1289
for client in self.clients:
1290
if client.name == args:
1291
logger.warning(u"Client %s is invalid", args)
1292
if self.use_dbus:
1293
# Emit D-Bus signal
1294
client.Rejected()
1295
break
1296
else:
1297
logger.error(u"Unknown client %s is invalid", args)
1298
elif cmd == u"SENDING":
1299
for client in self.clients:
1300
if client.name == args:
1301
logger.info(u"Sending secret to %s", client.name)
1302
client.checked_ok()
1303
if self.use_dbus:
1304
# Emit D-Bus signal
1305
client.GotSecret()
1306
break
1307
else:
1308
logger.error(u"Sending secret to unknown client %s",
1309
args)
1310
else:
1311
logger.error(u"Unknown IPC command: %r", cmdline)
1312
1313
# Keep calling this function
1607
1314
return True
1608
1315
1609
1316
1610
1317
def string_to_delta(interval):
1611
1318
"""Parse a string and return a datetime.timedelta
1612
1319
1613
>>> string_to_delta('7d')
1320
>>> string_to_delta(u'7d')
1614
1321
datetime.timedelta(7)
1615
>>> string_to_delta('60s')
1322
>>> string_to_delta(u'60s')
1616
1323
datetime.timedelta(0, 60)
1617
>>> string_to_delta('60m')
1324
>>> string_to_delta(u'60m')
1618
1325
datetime.timedelta(0, 3600)
1619
>>> string_to_delta('24h')
1326
>>> string_to_delta(u'24h')
1620
1327
datetime.timedelta(1)
1621
>>> string_to_delta('1w')
1328
>>> string_to_delta(u'1w')
1622
1329
datetime.timedelta(7)
1623
>>> string_to_delta('5m 30s')
1330
>>> string_to_delta(u'5m 30s')
1624
1331
datetime.timedelta(0, 330)
1625
1332
"""
1626
1333
timevalue = datetime.timedelta(0)
1628
1335
try:
1629
1336
suffix = unicode(s[-1])
1630
1337
value = int(s[:-1])
1631
if suffix == "d":
1338
if suffix == u"d":
1632
1339
delta = datetime.timedelta(value)
1633
elif suffix == "s":
1340
elif suffix == u"s":
1634
1341
delta = datetime.timedelta(0, value)
1635
elif suffix == "m":
1342
elif suffix == u"m":
1636
1343
delta = datetime.timedelta(0, 0, 0, 0, value)
1637
elif suffix == "h":
1344
elif suffix == u"h":
1638
1345
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1639
elif suffix == "w":
1346
elif suffix == u"w":
1640
1347
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1641
1348
else:
1642
raise ValueError("Unknown suffix %r" % suffix)
1643
except (ValueError, IndexError) as e:
1644
raise ValueError(*(e.args))
1349
raise ValueError(u"Unknown suffix %r" % suffix)
1350
except (ValueError, IndexError), e:
1351
raise ValueError(e.message)
1645
1352
timevalue += delta
1646
1353
return timevalue
1647
1354
1653
1360
global if_nametoindex
1654
1361
try:
1655
1362
if_nametoindex = (ctypes.cdll.LoadLibrary
1656
(ctypes.util.find_library("c"))
1363
(ctypes.util.find_library(u"c"))
1657
1364
.if_nametoindex)
1658
1365
except (OSError, AttributeError):
1659
logger.warning("Doing if_nametoindex the hard way")
1366
logger.warning(u"Doing if_nametoindex the hard way")
1660
1367
def if_nametoindex(interface):
1661
1368
"Get an interface index the hard way, i.e. using fcntl()"
1662
1369
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1663
with contextlib.closing(socket.socket()) as s:
1370
with closing(socket.socket()) as s:
1664
1371
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1665
struct.pack(str("16s16x"),
1372
struct.pack(str(u"16s16x"),
1666
1373
interface))
1667
interface_index = struct.unpack(str("I"),
1374
interface_index = struct.unpack(str(u"I"),
1668
1375
ifreq[16:20])[0]
1669
1376
return interface_index
1670
1377
return if_nametoindex(interface)
1678
1385
sys.exit()
1679
1386
os.setsid()
1680
1387
if not nochdir:
1681
os.chdir("/")
1388
os.chdir(u"/")
1682
1389
if os.fork():
1683
1390
sys.exit()
1684
1391
if not noclose:
1686
1393
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1687
1394
if not stat.S_ISCHR(os.fstat(null).st_mode):
1688
1395
raise OSError(errno.ENODEV,
1689
"%s not a character device"
1396
u"%s not a character device"
1690
1397
% os.path.devnull)
1691
1398
os.dup2(null, sys.stdin.fileno())
1692
1399
os.dup2(null, sys.stdout.fileno())
1700
1407
##################################################################
1701
1408
# Parsing of options, both command line and config file
1702
1409
1703
parser = argparse.ArgumentParser()
1704
parser.add_argument("-v", "--version", action="version",
1705
version = "%%(prog)s %s" % version,
1706
help="show version number and exit")
1707
parser.add_argument("-i", "--interface", metavar="IF",
1708
help="Bind to interface IF")
1709
parser.add_argument("-a", "--address",
1710
help="Address to listen for requests on")
1711
parser.add_argument("-p", "--port", type=int,
1712
help="Port number to receive requests on")
1713
parser.add_argument("--check", action="store_true",
1714
help="Run self-test")
1715
parser.add_argument("--debug", action="store_true",
1716
help="Debug mode; run in foreground and log"
1717
" to terminal")
1718
parser.add_argument("--debuglevel", metavar="LEVEL",
1719
help="Debug level for stdout output")
1720
parser.add_argument("--priority", help="GnuTLS"
1721
" priority string (see GnuTLS documentation)")
1722
parser.add_argument("--servicename",
1723
metavar="NAME", help="Zeroconf service name")
1724
parser.add_argument("--configdir",
1725
default="/etc/mandos", metavar="DIR",
1726
help="Directory to search for configuration"
1727
" files")
1728
parser.add_argument("--no-dbus", action="store_false",
1729
dest="use_dbus", help="Do not provide D-Bus"
1730
" system bus interface")
1731
parser.add_argument("--no-ipv6", action="store_false",
1732
dest="use_ipv6", help="Do not use IPv6")
1733
options = parser.parse_args()
1410
parser = optparse.OptionParser(version = "%%prog %s" % version)
1411
parser.add_option("-i", u"--interface", type=u"string",
1412
metavar="IF", help=u"Bind to interface IF")
1413
parser.add_option("-a", u"--address", type=u"string",
1414
help=u"Address to listen for requests on")
1415
parser.add_option("-p", u"--port", type=u"int",
1416
help=u"Port number to receive requests on")
1417
parser.add_option("--check", action=u"store_true",
1418
help=u"Run self-test")
1419
parser.add_option("--debug", action=u"store_true",
1420
help=u"Debug mode; run in foreground and log to"
1421
u" terminal")
1422
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1423
u" priority string (see GnuTLS documentation)")
1424
parser.add_option("--servicename", type=u"string",
1425
metavar=u"NAME", help=u"Zeroconf service name")
1426
parser.add_option("--configdir", type=u"string",
1427
default=u"/etc/mandos", metavar=u"DIR",
1428
help=u"Directory to search for configuration"
1429
u" files")
1430
parser.add_option("--no-dbus", action=u"store_false",
1431
dest=u"use_dbus", help=u"Do not provide D-Bus"
1432
u" system bus interface")
1433
parser.add_option("--no-ipv6", action=u"store_false",
1434
dest=u"use_ipv6", help=u"Do not use IPv6")
1435
options = parser.parse_args()[0]
1734
1436
1735
1437
if options.check:
1736
1438
import doctest
1738
1440
sys.exit()
1739
1441
1740
1442
# Default values for config file for server-global settings
1741
server_defaults = { "interface": "",
1742
"address": "",
1743
"port": "",
1744
"debug": "False",
1745
"priority":
1746
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1747
"servicename": "Mandos",
1748
"use_dbus": "True",
1749
"use_ipv6": "True",
1750
"debuglevel": "",
1443
server_defaults = { u"interface": u"",
1444
u"address": u"",
1445
u"port": u"",
1446
u"debug": u"False",
1447
u"priority":
1448
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1449
u"servicename": u"Mandos",
1450
u"use_dbus": u"True",
1451
u"use_ipv6": u"True",
1751
1452
}
1752
1453
1753
1454
# Parse config file for server-global settings
1754
1455
server_config = configparser.SafeConfigParser(server_defaults)
1755
1456
del server_defaults
1756
1457
server_config.read(os.path.join(options.configdir,
1757
"mandos.conf"))
1458
u"mandos.conf"))
1758
1459
# Convert the SafeConfigParser object to a dict
1759
1460
server_settings = server_config.defaults()
1760
1461
# Use the appropriate methods on the non-string config options
1761
for option in ("debug", "use_dbus", "use_ipv6"):
1762
server_settings[option] = server_config.getboolean("DEFAULT",
1462
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1463
server_settings[option] = server_config.getboolean(u"DEFAULT",
1763
1464
option)
1764
1465
if server_settings["port"]:
1765
server_settings["port"] = server_config.getint("DEFAULT",
1766
"port")
1466
server_settings["port"] = server_config.getint(u"DEFAULT",
1467
u"port")
1767
1468
del server_config
1768
1469
1769
1470
# Override the settings from the config file with command line
1770
1471
# options, if set.
1771
for option in ("interface", "address", "port", "debug",
1772
"priority", "servicename", "configdir",
1773
"use_dbus", "use_ipv6", "debuglevel"):
1472
for option in (u"interface", u"address", u"port", u"debug",
1473
u"priority", u"servicename", u"configdir",
1474
u"use_dbus", u"use_ipv6"):
1774
1475
value = getattr(options, option)
1775
1476
if value is not None:
1776
1477
server_settings[option] = value
1784
1485
##################################################################
1785
1486
1786
1487
# For convenience
1787
debug = server_settings["debug"]
1788
debuglevel = server_settings["debuglevel"]
1789
use_dbus = server_settings["use_dbus"]
1790
use_ipv6 = server_settings["use_ipv6"]
1791
1792
if server_settings["servicename"] != "Mandos":
1488
debug = server_settings[u"debug"]
1489
use_dbus = server_settings[u"use_dbus"]
1490
use_ipv6 = server_settings[u"use_ipv6"]
1491
1492
if not debug:
1493
syslogger.setLevel(logging.WARNING)
1494
console.setLevel(logging.WARNING)
1495
1496
if server_settings[u"servicename"] != u"Mandos":
1793
1497
syslogger.setFormatter(logging.Formatter
1794
('Mandos (%s) [%%(process)d]:'
1795
' %%(levelname)s: %%(message)s'
1796
% server_settings["servicename"]))
1498
(u'Mandos (%s) [%%(process)d]:'
1499
u' %%(levelname)s: %%(message)s'
1500
% server_settings[u"servicename"]))
1797
1501
1798
1502
# Parse config file with clients
1799
client_defaults = { "timeout": "1h",
1800
"interval": "5m",
1801
"checker": "fping -q -- %%(host)s",
1802
"host": "",
1803
"approval_delay": "0s",
1804
"approval_duration": "1s",
1503
client_defaults = { u"timeout": u"1h",
1504
u"interval": u"5m",
1505
u"checker": u"fping -q -- %%(host)s",
1506
u"host": u"",
1805
1507
}
1806
1508
client_config = configparser.SafeConfigParser(client_defaults)
1807
client_config.read(os.path.join(server_settings["configdir"],
1808
"clients.conf"))
1509
client_config.read(os.path.join(server_settings[u"configdir"],
1510
u"clients.conf"))
1809
1511
1810
1512
global mandos_dbus_service
1811
1513
mandos_dbus_service = None
1812
1514
1813
tcp_server = MandosServer((server_settings["address"],
1814
server_settings["port"]),
1515
tcp_server = MandosServer((server_settings[u"address"],
1516
server_settings[u"port"]),
1815
1517
ClientHandler,
1816
interface=(server_settings["interface"]
1817
or None),
1518
interface=server_settings[u"interface"],
1818
1519
use_ipv6=use_ipv6,
1819
1520
gnutls_priority=
1820
server_settings["priority"],
1521
server_settings[u"priority"],
1821
1522
use_dbus=use_dbus)
1822
if not debug:
1823
pidfilename = "/var/run/mandos.pid"
1824
try:
1825
pidfile = open(pidfilename, "w")
1826
except IOError:
1827
logger.error("Could not open file %r", pidfilename)
1523
pidfilename = u"/var/run/mandos.pid"
1524
try:
1525
pidfile = open(pidfilename, u"w")
1526
except IOError:
1527
logger.error(u"Could not open file %r", pidfilename)
1828
1528
1829
1529
try:
1830
uid = pwd.getpwnam("_mandos").pw_uid
1831
gid = pwd.getpwnam("_mandos").pw_gid
1530
uid = pwd.getpwnam(u"_mandos").pw_uid
1531
gid = pwd.getpwnam(u"_mandos").pw_gid
1832
1532
except KeyError:
1833
1533
try:
1834
uid = pwd.getpwnam("mandos").pw_uid
1835
gid = pwd.getpwnam("mandos").pw_gid
1534
uid = pwd.getpwnam(u"mandos").pw_uid
1535
gid = pwd.getpwnam(u"mandos").pw_gid
1836
1536
except KeyError:
1837
1537
try:
1838
uid = pwd.getpwnam("nobody").pw_uid
1839
gid = pwd.getpwnam("nobody").pw_gid
1538
uid = pwd.getpwnam(u"nobody").pw_uid
1539
gid = pwd.getpwnam(u"nobody").pw_gid
1840
1540
except KeyError:
1841
1541
uid = 65534
1842
1542
gid = 65534
1843
1543
try:
1844
1544
os.setgid(gid)
1845
1545
os.setuid(uid)
1846
except OSError as error:
1546
except OSError, error:
1847
1547
if error[0] != errno.EPERM:
1848
1548
raise error
1849
1549
1850
if not debug and not debuglevel:
1851
syslogger.setLevel(logging.WARNING)
1852
console.setLevel(logging.WARNING)
1853
if debuglevel:
1854
level = getattr(logging, debuglevel.upper())
1855
syslogger.setLevel(level)
1856
console.setLevel(level)
1857
1550
# Enable all possible GnuTLS debugging
1858
1551
if debug:
1859
# Enable all possible GnuTLS debugging
1860
1861
1552
# "Use a log level over 10 to enable all debugging options."
1862
1553
# - GnuTLS manual
1863
1554
gnutls.library.functions.gnutls_global_set_log_level(11)
1864
1555
1865
1556
@gnutls.library.types.gnutls_log_func
1866
1557
def debug_gnutls(level, string):
1867
logger.debug("GnuTLS: %s", string[:-1])
1558
logger.debug(u"GnuTLS: %s", string[:-1])
1868
1559
1869
1560
(gnutls.library.functions
1870
1561
.gnutls_global_set_log_function(debug_gnutls))
1871
1872
# Redirect stdin so all checkers get /dev/null
1873
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1874
os.dup2(null, sys.stdin.fileno())
1875
if null > 2:
1876
os.close(null)
1877
else:
1878
# No console logging
1879
logger.removeHandler(console)
1880
1881
# Need to fork before connecting to D-Bus
1882
if not debug:
1883
# Close all input and output, do double fork, etc.
1884
daemon()
1885
1562
1886
1563
global main_loop
1887
1564
# From the Avahi example code
1890
1567
bus = dbus.SystemBus()
1891
1568
# End of Avahi example code
1892
1569
if use_dbus:
1893
try:
1894
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1895
bus, do_not_queue=True)
1896
except dbus.exceptions.NameExistsException as e:
1897
logger.error(unicode(e) + ", disabling D-Bus")
1898
use_dbus = False
1899
server_settings["use_dbus"] = False
1900
tcp_server.use_dbus = False
1570
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1901
1571
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1902
service = AvahiService(name = server_settings["servicename"],
1903
servicetype = "_mandos._tcp",
1572
service = AvahiService(name = server_settings[u"servicename"],
1573
servicetype = u"_mandos._tcp",
1904
1574
protocol = protocol, bus = bus)
1905
1575
if server_settings["interface"]:
1906
1576
service.interface = (if_nametoindex
1907
(str(server_settings["interface"])))
1908
1909
global multiprocessing_manager
1910
multiprocessing_manager = multiprocessing.Manager()
1577
(str(server_settings[u"interface"])))
1911
1578
1912
1579
client_class = Client
1913
1580
if use_dbus:
1914
1581
client_class = functools.partial(ClientDBus, bus = bus)
1915
def client_config_items(config, section):
1916
special_settings = {
1917
"approved_by_default":
1918
lambda: config.getboolean(section,
1919
"approved_by_default"),
1920
}
1921
for name, value in config.items(section):
1922
try:
1923
yield (name, special_settings[name]())
1924
except KeyError:
1925
yield (name, value)
1926
1927
1582
tcp_server.clients.update(set(
1928
1583
client_class(name = section,
1929
config= dict(client_config_items(
1930
client_config, section)))
1584
config= dict(client_config.items(section)))
1931
1585
for section in client_config.sections()))
1932
1586
if not tcp_server.clients:
1933
logger.warning("No clients defined")
1934
1587
logger.warning(u"No clients defined")
1588
1589
if debug:
1590
# Redirect stdin so all checkers get /dev/null
1591
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1592
os.dup2(null, sys.stdin.fileno())
1593
if null > 2:
1594
os.close(null)
1595
else:
1596
# No console logging
1597
logger.removeHandler(console)
1598
# Close all input and output, do double fork, etc.
1599
daemon()
1600
1601
try:
1602
with closing(pidfile):
1603
pid = os.getpid()
1604
pidfile.write(str(pid) + "\n")
1605
del pidfile
1606
except IOError:
1607
logger.error(u"Could not write to file %r with PID %d",
1608
pidfilename, pid)
1609
except NameError:
1610
# "pidfile" was never created
1611
pass
1612
del pidfilename
1613
1935
1614
if not debug:
1936
try:
1937
with pidfile:
1938
pid = os.getpid()
1939
pidfile.write(str(pid) + "\n".encode("utf-8"))
1940
del pidfile
1941
except IOError:
1942
logger.error("Could not write to file %r with PID %d",
1943
pidfilename, pid)
1944
except NameError:
1945
# "pidfile" was never created
1946
pass
1947
del pidfilename
1948
1949
1615
signal.signal(signal.SIGINT, signal.SIG_IGN)
1950
1951
1616
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1952
1617
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1953
1618
1955
1620
class MandosDBusService(dbus.service.Object):
1956
1621
"""A D-Bus proxy object"""
1957
1622
def __init__(self):
1958
dbus.service.Object.__init__(self, bus, "/")
1959
_interface = "se.bsnet.fukt.Mandos"
1960
1961
@dbus.service.signal(_interface, signature="o")
1962
def ClientAdded(self, objpath):
1963
"D-Bus signal"
1964
pass
1965
1966
@dbus.service.signal(_interface, signature="ss")
1967
def ClientNotFound(self, fingerprint, address):
1968
"D-Bus signal"
1969
pass
1970
1971
@dbus.service.signal(_interface, signature="os")
1623
dbus.service.Object.__init__(self, bus, u"/")
1624
_interface = u"se.bsnet.fukt.Mandos"
1625
1626
@dbus.service.signal(_interface, signature=u"oa{sv}")
1627
def ClientAdded(self, objpath, properties):
1628
"D-Bus signal"
1629
pass
1630
1631
@dbus.service.signal(_interface, signature=u"s")
1632
def ClientNotFound(self, fingerprint):
1633
"D-Bus signal"
1634
pass
1635
1636
@dbus.service.signal(_interface, signature=u"os")
1972
1637
def ClientRemoved(self, objpath, name):
1973
1638
"D-Bus signal"
1974
1639
pass
1975
1640
1976
@dbus.service.method(_interface, out_signature="ao")
1641
@dbus.service.method(_interface, out_signature=u"ao")
1977
1642
def GetAllClients(self):
1978
1643
"D-Bus method"
1979
1644
return dbus.Array(c.dbus_object_path
1980
1645
for c in tcp_server.clients)
1981
1646
1982
1647
@dbus.service.method(_interface,
1983
out_signature="a{oa{sv}}")
1648
out_signature=u"a{oa{sv}}")
1984
1649
def GetAllClientsWithProperties(self):
1985
1650
"D-Bus method"
1986
1651
return dbus.Dictionary(
1987
((c.dbus_object_path, c.GetAll(""))
1652
((c.dbus_object_path, c.GetAll(u""))
1988
1653
for c in tcp_server.clients),
1989
signature="oa{sv}")
1654
signature=u"oa{sv}")
1990
1655
1991
@dbus.service.method(_interface, in_signature="o")
1656
@dbus.service.method(_interface, in_signature=u"o")
1992
1657
def RemoveClient(self, object_path):
1993
1658
"D-Bus method"
1994
1659
for c in tcp_server.clients:
1996
1661
tcp_server.clients.remove(c)
1997
1662
c.remove_from_connection()
1998
1663
# Don't signal anything except ClientRemoved
1999
c.disable(quiet=True)
1664
c.disable(signal=False)
2000
1665
# Emit D-Bus signal
2001
1666
self.ClientRemoved(object_path, c.name)
2002
1667
return
2012
1677
2013
1678
while tcp_server.clients:
2014
1679
client = tcp_server.clients.pop()
2015
if use_dbus:
2016
client.remove_from_connection()
1680
client.remove_from_connection()
2017
1681
client.disable_hook = None
2018
1682
# Don't signal anything except ClientRemoved
2019
client.disable(quiet=True)
1683
client.disable(signal=False)
2020
1684
if use_dbus:
2021
1685
# Emit D-Bus signal
2022
1686
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2027
1691
for client in tcp_server.clients:
2028
1692
if use_dbus:
2029
1693
# Emit D-Bus signal
2030
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1694
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1695
client.GetAll(u""))
2031
1696
client.enable()
2032
1697
2033
1698
tcp_server.enable()
2036
1701
# Find out what port we got
2037
1702
service.port = tcp_server.socket.getsockname()[1]
2038
1703
if use_ipv6:
2039
logger.info("Now listening on address %r, port %d,"
1704
logger.info(u"Now listening on address %r, port %d,"
2040
1705
" flowinfo %d, scope_id %d"
2041
1706
% tcp_server.socket.getsockname())
2042
1707
else: # IPv4
2043
logger.info("Now listening on address %r, port %d"
1708
logger.info(u"Now listening on address %r, port %d"
2044
1709
% tcp_server.socket.getsockname())
2045
1710
2046
1711
#service.interface = tcp_server.socket.getsockname()[3]
2049
1714
# From the Avahi example code
2050
1715
try:
2051
1716
service.activate()
2052
except dbus.exceptions.DBusException as error:
2053
logger.critical("DBusException: %s", error)
1717
except dbus.exceptions.DBusException, error:
1718
logger.critical(u"DBusException: %s", error)
2054
1719
cleanup()
2055
1720
sys.exit(1)
2056
1721
# End of Avahi example code
2060
1725
(tcp_server.handle_request
2061
1726
(*args[2:], **kwargs) or True))
2062
1727
2063
logger.debug("Starting main loop")
1728
logger.debug(u"Starting main loop")
2064
1729
main_loop.run()
2065
except AvahiError as error:
2066
logger.critical("AvahiError: %s", error)
1730
except AvahiError, error:
1731
logger.critical(u"AvahiError: %s", error)
2067
1732
cleanup()
2068
1733
sys.exit(1)
2069
1734
except KeyboardInterrupt:
2070
1735
if debug:
2071
print("", file=sys.stderr)
2072
logger.debug("Server received KeyboardInterrupt")
2073
logger.debug("Server exiting")
1736
print >> sys.stderr
1737
logger.debug(u"Server received KeyboardInterrupt")
1738
logger.debug(u"Server exiting")
2074
1739
# Must run before the D-Bus bus name gets deregistered
2075
1740
cleanup()
2076
1741
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0