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- Committer: teddy at bsnet
- Date: 2011-03-21 19:34:39 UTC
- Revision ID: teddy@fukt.bsnet.se-20110321193439-lkj3kwvhmujd8lwv
* plugins.d/mandos-client.c (good_interface): Reject non-ARP
interfaces.
interfaces.
- files added:
- DBUS-API
- debian/source
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
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#
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# Everything else is
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# Contact the authors at <mandos@fukt.bsnet.se>.
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#
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from __future__ import division, with_statement, absolute_import
34
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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65
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import dbus
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import dbus.service
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from dbus.mainloop.glib import DBusGMainLoop
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import ctypes
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import ctypes.util
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import xml.dom.minidom
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import inspect
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try:
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SO_BINDTODEVICE = socket.SO_BINDTODEVICE
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SO_BINDTODEVICE = None
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version = "1.0.11"
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version = "1.3.0"
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logger = logging.Logger(u'mandos')
87
#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
87
(u'Mandos [%(process)d]: %(levelname)s:'
88
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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96
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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:'
100
' %(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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121
interface: integer; avahi.IF_UNSPEC or an interface index.
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122
Used to optionally bind to the specified interface.
117
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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125
See <http://www.dns-sd.org/ServiceTypes.html>
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port: integer; what port to announce
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TXT: list of strings; TXT record for the service
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136
"""
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def __init__(self, interface = avahi.IF_UNSPEC, name = None,
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servicetype = None, port = None, TXT = None,
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domain = u"", host = u"", max_renames = 32768,
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domain = "", host = "", max_renames = 32768,
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protocol = avahi.PROTO_UNSPEC, bus = None):
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self.interface = interface
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self.name = name
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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 ...",
157
unicode(self.name))
160
raise AvahiServiceError("Too many renames")
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self.name = unicode(self.server.GetAlternativeServiceName(self.name))
162
logger.info("Changing Zeroconf service name to %r ...",
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self.name)
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syslogger.setFormatter(logging.Formatter
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(u'Mandos (%s) [%%(process)d]:'
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u' %%(levelname)s: %%(message)s'
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('Mandos (%s) [%%(process)d]:'
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' %%(levelname)s: %%(message)s'
161
167
% self.name))
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168
self.remove()
163
self.add()
169
try:
170
self.add()
171
except dbus.exceptions.DBusException, error:
172
logger.critical("DBusException: %s", error)
173
self.cleanup()
174
os._exit(1)
164
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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"""
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self.server.EntryGroupNew()),
175
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avahi.DBUS_INTERFACE_ENTRY_GROUP)
176
187
self.group.connect_to_signal('StateChanged',
177
self.entry_group_state_changed)
178
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
188
self
189
.entry_group_state_changed)
190
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
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191
self.name, self.type)
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self.group.AddService(
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self.interface,
188
200
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)
203
logger.debug("Avahi entry group state change: %i", state)
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204
193
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if state == avahi.ENTRY_GROUP_ESTABLISHED:
194
logger.debug(u"Zeroconf service established.")
206
logger.debug("Zeroconf service established.")
195
207
elif state == avahi.ENTRY_GROUP_COLLISION:
196
logger.warning(u"Zeroconf service name collision.")
208
logger.info("Zeroconf service name collision.")
197
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self.rename()
198
210
elif state == avahi.ENTRY_GROUP_FAILURE:
199
logger.critical(u"Avahi: Error in group state changed %s",
211
logger.critical("Avahi: Error in group state changed %s",
200
212
unicode(error))
201
raise AvahiGroupError(u"State changed: %s"
213
raise AvahiGroupError("State changed: %s"
202
214
% unicode(error))
203
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def cleanup(self):
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"""Derived from the Avahi example code"""
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219
self.group = None
208
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def server_state_changed(self, state):
209
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"""Derived from the Avahi example code"""
222
logger.debug("Avahi server state change: %i", state)
210
223
if state == avahi.SERVER_COLLISION:
211
logger.error(u"Zeroconf server name collision")
224
logger.error("Zeroconf server name collision")
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self.remove()
213
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elif state == avahi.SERVER_RUNNING:
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self.add()
219
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self.bus.get_object(avahi.DBUS_NAME,
220
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avahi.DBUS_PATH_SERVER),
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avahi.DBUS_INTERFACE_SERVER)
222
self.server.connect_to_signal(u"StateChanged",
235
self.server.connect_to_signal("StateChanged",
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self.server_state_changed)
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self.server_state_changed(self.server.GetState())
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"""A representation of a client host served by this server.
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Attributes:
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name: string; from the config file, used in log messages and
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D-Bus identifiers
233
fingerprint: string (40 or 32 hexadecimal digits); used to
234
uniquely identify the client
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secret: bytestring; sent verbatim (over TLS) to client
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host: string; available for use by the checker command
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created: datetime.datetime(); (UTC) object creation
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last_enabled: datetime.datetime(); (UTC)
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enabled: bool()
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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
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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)
244
_approved: bool(); 'None' if not yet approved/disapproved
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approval_delay: datetime.timedelta(); Time to wait for approval
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approval_duration: datetime.timedelta(); Duration of one approval
245
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checker: subprocess.Popen(); a running checker process used
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to see if the client lives.
247
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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
252
client lives. %() expansions are done at
250
checker_callback_tag: a gobject event source tag, or None
251
checker_command: string; External command which is run to check
252
if client lives. %() expansions are done at
253
253
runtime with vars(self) as dict, so that for
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254
instance %(name)s can be used in the command.
255
checker_initiator_tag: a gobject event source tag, or None
256
created: datetime.datetime(); (UTC) object creation
255
257
current_checker_command: string; current running checker_command
258
disable_hook: If set, called by disable() as disable_hook(self)
259
disable_initiator_tag: a gobject event source tag, or None
260
enabled: bool()
261
fingerprint: string (40 or 32 hexadecimal digits); used to
262
uniquely identify the client
263
host: string; available for use by the checker command
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interval: datetime.timedelta(); How often to start a new checker
265
last_approval_request: datetime.datetime(); (UTC) or None
266
last_checked_ok: datetime.datetime(); (UTC) or None
267
last_enabled: datetime.datetime(); (UTC)
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name: string; from the config file, used in log messages and
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D-Bus identifiers
270
secret: bytestring; sent verbatim (over TLS) to client
271
timeout: datetime.timedelta(); How long from last_checked_ok
272
until this client is disabled
273
runtime_expansions: Allowed attributes for runtime expansion.
256
274
"""
257
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runtime_expansions = ("approval_delay", "approval_duration",
277
"created", "enabled", "fingerprint",
278
"host", "interval", "last_checked_ok",
279
"last_enabled", "name", "timeout")
280
258
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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))
282
def _timedelta_to_milliseconds(td):
283
"Convert a datetime.timedelta() to milliseconds"
284
return ((td.days * 24 * 60 * 60 * 1000)
285
+ (td.seconds * 1000)
286
+ (td.microseconds // 1000))
264
287
265
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def timeout_milliseconds(self):
266
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"Return the 'timeout' attribute in milliseconds"
267
return self._datetime_to_milliseconds(self.timeout)
290
return self._timedelta_to_milliseconds(self.timeout)
268
291
269
292
def interval_milliseconds(self):
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"Return the 'interval' attribute in milliseconds"
271
return self._datetime_to_milliseconds(self.interval)
294
return self._timedelta_to_milliseconds(self.interval)
295
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def approval_delay_milliseconds(self):
297
return self._timedelta_to_milliseconds(self.approval_delay)
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298
273
299
def __init__(self, name = None, disable_hook=None, config=None):
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"""Note: the 'checker' key in 'config' sets the
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self.name = name
278
304
if config is None:
279
305
config = {}
280
logger.debug(u"Creating client %r", self.name)
306
logger.debug("Creating client %r", self.name)
281
307
# Uppercase and remove spaces from fingerprint for later
282
308
# comparison purposes with return value from the fingerprint()
283
309
# 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:
310
self.fingerprint = (config["fingerprint"].upper()
311
.replace(" ", ""))
312
logger.debug(" Fingerprint: %s", self.fingerprint)
313
if "secret" in config:
314
self.secret = config["secret"].decode("base64")
315
elif "secfile" in config:
316
with open(os.path.expanduser(os.path.expandvars
317
(config["secfile"])),
318
"rb") as secfile:
293
319
self.secret = secfile.read()
294
320
else:
295
raise TypeError(u"No secret or secfile for client %s"
321
raise TypeError("No secret or secfile for client %s"
296
322
% self.name)
297
self.host = config.get(u"host", u"")
323
self.host = config.get("host", "")
298
324
self.created = datetime.datetime.utcnow()
299
325
self.enabled = False
326
self.last_approval_request = None
300
327
self.last_enabled = None
301
328
self.last_checked_ok = None
302
self.timeout = string_to_delta(config[u"timeout"])
303
self.interval = string_to_delta(config[u"interval"])
329
self.timeout = string_to_delta(config["timeout"])
330
self.interval = string_to_delta(config["interval"])
304
331
self.disable_hook = disable_hook
305
332
self.checker = None
306
333
self.checker_initiator_tag = None
307
334
self.disable_initiator_tag = None
308
335
self.checker_callback_tag = None
309
self.checker_command = config[u"checker"]
336
self.checker_command = config["checker"]
310
337
self.current_checker_command = None
311
338
self.last_connect = None
339
self._approved = None
340
self.approved_by_default = config.get("approved_by_default",
341
True)
342
self.approvals_pending = 0
343
self.approval_delay = string_to_delta(
344
config["approval_delay"])
345
self.approval_duration = string_to_delta(
346
config["approval_duration"])
347
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
312
348
349
def send_changedstate(self):
350
self.changedstate.acquire()
351
self.changedstate.notify_all()
352
self.changedstate.release()
353
313
354
def enable(self):
314
355
"""Start this client's checker and timeout hooks"""
315
if getattr(self, u"enabled", False):
356
if getattr(self, "enabled", False):
316
357
# Already enabled
317
358
return
359
self.send_changedstate()
318
360
self.last_enabled = datetime.datetime.utcnow()
319
361
# Schedule a new checker to be started an 'interval' from now,
320
362
# and every interval from then on.
321
363
self.checker_initiator_tag = (gobject.timeout_add
322
364
(self.interval_milliseconds(),
323
365
self.start_checker))
324
# Also start a new checker *right now*.
325
self.start_checker()
326
366
# Schedule a disable() when 'timeout' has passed
327
367
self.disable_initiator_tag = (gobject.timeout_add
328
368
(self.timeout_milliseconds(),
329
369
self.disable))
330
370
self.enabled = True
371
# Also start a new checker *right now*.
372
self.start_checker()
331
373
332
def disable(self):
374
def disable(self, quiet=True):
333
375
"""Disable this client."""
334
376
if not getattr(self, "enabled", False):
335
377
return False
336
logger.info(u"Disabling client %s", self.name)
337
if getattr(self, u"disable_initiator_tag", False):
378
if not quiet:
379
self.send_changedstate()
380
if not quiet:
381
logger.info("Disabling client %s", self.name)
382
if getattr(self, "disable_initiator_tag", False):
338
383
gobject.source_remove(self.disable_initiator_tag)
339
384
self.disable_initiator_tag = None
340
if getattr(self, u"checker_initiator_tag", False):
385
if getattr(self, "checker_initiator_tag", False):
341
386
gobject.source_remove(self.checker_initiator_tag)
342
387
self.checker_initiator_tag = None
343
388
self.stop_checker()
358
403
if os.WIFEXITED(condition):
359
404
exitstatus = os.WEXITSTATUS(condition)
360
405
if exitstatus == 0:
361
logger.info(u"Checker for %(name)s succeeded",
406
logger.info("Checker for %(name)s succeeded",
362
407
vars(self))
363
408
self.checked_ok()
364
409
else:
365
logger.info(u"Checker for %(name)s failed",
410
logger.info("Checker for %(name)s failed",
366
411
vars(self))
367
412
else:
368
logger.warning(u"Checker for %(name)s crashed?",
413
logger.warning("Checker for %(name)s crashed?",
369
414
vars(self))
370
415
371
416
def checked_ok(self):
380
425
(self.timeout_milliseconds(),
381
426
self.disable))
382
427
428
def need_approval(self):
429
self.last_approval_request = datetime.datetime.utcnow()
430
383
431
def start_checker(self):
384
432
"""Start a new checker subprocess if one is not running.
385
433
391
439
# client would inevitably timeout, since no checker would get
392
440
# a chance to run to completion. If we instead leave running
393
441
# 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.
442
# than 'timeout' for the client to be disabled, which is as it
443
# should be.
396
444
397
445
# If a checker exists, make sure it is not a zombie
398
if self.checker is not None:
446
try:
399
447
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
448
except (AttributeError, OSError), error:
449
if (isinstance(error, OSError)
450
and error.errno != errno.ECHILD):
451
raise error
452
else:
400
453
if pid:
401
logger.warning(u"Checker was a zombie")
454
logger.warning("Checker was a zombie")
402
455
gobject.source_remove(self.checker_callback_tag)
403
456
self.checker_callback(pid, status,
404
457
self.current_checker_command)
409
462
command = self.checker_command % self.host
410
463
except TypeError:
411
464
# 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())
465
escaped_attrs = dict(
466
(attr,
467
re.escape(unicode(str(getattr(self, attr, "")),
468
errors=
469
'replace')))
470
for attr in
471
self.runtime_expansions)
472
418
473
try:
419
474
command = self.checker_command % escaped_attrs
420
475
except TypeError, error:
421
logger.error(u'Could not format string "%s":'
422
u' %s', self.checker_command, error)
476
logger.error('Could not format string "%s":'
477
' %s', self.checker_command, error)
423
478
return True # Try again later
424
479
self.current_checker_command = command
425
480
try:
426
logger.info(u"Starting checker %r for %s",
481
logger.info("Starting checker %r for %s",
427
482
command, self.name)
428
483
# We don't need to redirect stdout and stderr, since
429
484
# in normal mode, that is already done by daemon(),
431
486
# always replaced by /dev/null.)
432
487
self.checker = subprocess.Popen(command,
433
488
close_fds=True,
434
shell=True, cwd=u"/")
489
shell=True, cwd="/")
435
490
self.checker_callback_tag = (gobject.child_watch_add
436
491
(self.checker.pid,
437
492
self.checker_callback,
443
498
gobject.source_remove(self.checker_callback_tag)
444
499
self.checker_callback(pid, status, command)
445
500
except OSError, error:
446
logger.error(u"Failed to start subprocess: %s",
501
logger.error("Failed to start subprocess: %s",
447
502
error)
448
503
# Re-run this periodically if run by gobject.timeout_add
449
504
return True
453
508
if self.checker_callback_tag:
454
509
gobject.source_remove(self.checker_callback_tag)
455
510
self.checker_callback_tag = None
456
if getattr(self, u"checker", None) is None:
511
if getattr(self, "checker", None) is None:
457
512
return
458
logger.debug(u"Stopping checker for %(name)s", vars(self))
513
logger.debug("Stopping checker for %(name)s", vars(self))
459
514
try:
460
515
os.kill(self.checker.pid, signal.SIGTERM)
461
#os.sleep(0.5)
516
#time.sleep(0.5)
462
517
#if self.checker.poll() is None:
463
518
# os.kill(self.checker.pid, signal.SIGKILL)
464
519
except OSError, error:
465
520
if error.errno != errno.ESRCH: # No such process
466
521
raise
467
522
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):
523
524
def dbus_service_property(dbus_interface, signature="v",
525
access="readwrite", byte_arrays=False):
526
"""Decorators for marking methods of a DBusObjectWithProperties to
527
become properties on the D-Bus.
528
529
The decorated method will be called with no arguments by "Get"
530
and with one argument by "Set".
531
532
The parameters, where they are supported, are the same as
533
dbus.service.method, except there is only "signature", since the
534
type from Get() and the type sent to Set() is the same.
535
"""
536
# Encoding deeply encoded byte arrays is not supported yet by the
537
# "Set" method, so we fail early here:
538
if byte_arrays and signature != "ay":
539
raise ValueError("Byte arrays not supported for non-'ay'"
540
" signature %r" % signature)
541
def decorator(func):
542
func._dbus_is_property = True
543
func._dbus_interface = dbus_interface
544
func._dbus_signature = signature
545
func._dbus_access = access
546
func._dbus_name = func.__name__
547
if func._dbus_name.endswith("_dbus_property"):
548
func._dbus_name = func._dbus_name[:-14]
549
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
550
return func
551
return decorator
552
553
554
class DBusPropertyException(dbus.exceptions.DBusException):
555
"""A base class for D-Bus property-related exceptions
556
"""
557
def __unicode__(self):
558
return unicode(str(self))
559
560
561
class DBusPropertyAccessException(DBusPropertyException):
562
"""A property's access permissions disallows an operation.
563
"""
564
pass
565
566
567
class DBusPropertyNotFound(DBusPropertyException):
568
"""An attempt was made to access a non-existing property.
569
"""
570
pass
571
572
573
class DBusObjectWithProperties(dbus.service.Object):
574
"""A D-Bus object with properties.
575
576
Classes inheriting from this can use the dbus_service_property
577
decorator to expose methods as D-Bus properties. It exposes the
578
standard Get(), Set(), and GetAll() methods on the D-Bus.
579
"""
580
581
@staticmethod
582
def _is_dbus_property(obj):
583
return getattr(obj, "_dbus_is_property", False)
584
585
def _get_all_dbus_properties(self):
586
"""Returns a generator of (name, attribute) pairs
587
"""
588
return ((prop._dbus_name, prop)
589
for name, prop in
590
inspect.getmembers(self, self._is_dbus_property))
591
592
def _get_dbus_property(self, interface_name, property_name):
593
"""Returns a bound method if one exists which is a D-Bus
594
property with the specified name and interface.
595
"""
596
for name in (property_name,
597
property_name + "_dbus_property"):
598
prop = getattr(self, name, None)
599
if (prop is None
600
or not self._is_dbus_property(prop)
601
or prop._dbus_name != property_name
602
or (interface_name and prop._dbus_interface
603
and interface_name != prop._dbus_interface)):
604
continue
605
return prop
606
# No such property
607
raise DBusPropertyNotFound(self.dbus_object_path + ":"
608
+ interface_name + "."
609
+ property_name)
610
611
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
612
out_signature="v")
613
def Get(self, interface_name, property_name):
614
"""Standard D-Bus property Get() method, see D-Bus standard.
615
"""
616
prop = self._get_dbus_property(interface_name, property_name)
617
if prop._dbus_access == "write":
618
raise DBusPropertyAccessException(property_name)
619
value = prop()
620
if not hasattr(value, "variant_level"):
621
return value
622
return type(value)(value, variant_level=value.variant_level+1)
623
624
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
625
def Set(self, interface_name, property_name, value):
626
"""Standard D-Bus property Set() method, see D-Bus standard.
627
"""
628
prop = self._get_dbus_property(interface_name, property_name)
629
if prop._dbus_access == "read":
630
raise DBusPropertyAccessException(property_name)
631
if prop._dbus_get_args_options["byte_arrays"]:
632
# The byte_arrays option is not supported yet on
633
# signatures other than "ay".
634
if prop._dbus_signature != "ay":
635
raise ValueError
636
value = dbus.ByteArray(''.join(unichr(byte)
637
for byte in value))
638
prop(value)
639
640
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
641
out_signature="a{sv}")
642
def GetAll(self, interface_name):
643
"""Standard D-Bus property GetAll() method, see D-Bus
644
standard.
645
646
Note: Will not include properties with access="write".
647
"""
648
all = {}
649
for name, prop in self._get_all_dbus_properties():
650
if (interface_name
651
and interface_name != prop._dbus_interface):
652
# Interface non-empty but did not match
653
continue
654
# Ignore write-only properties
655
if prop._dbus_access == "write":
656
continue
657
value = prop()
658
if not hasattr(value, "variant_level"):
659
all[name] = value
660
continue
661
all[name] = type(value)(value, variant_level=
662
value.variant_level+1)
663
return dbus.Dictionary(all, signature="sv")
664
665
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
666
out_signature="s",
667
path_keyword='object_path',
668
connection_keyword='connection')
669
def Introspect(self, object_path, connection):
670
"""Standard D-Bus method, overloaded to insert property tags.
671
"""
672
xmlstring = dbus.service.Object.Introspect(self, object_path,
673
connection)
674
try:
675
document = xml.dom.minidom.parseString(xmlstring)
676
def make_tag(document, name, prop):
677
e = document.createElement("property")
678
e.setAttribute("name", name)
679
e.setAttribute("type", prop._dbus_signature)
680
e.setAttribute("access", prop._dbus_access)
681
return e
682
for if_tag in document.getElementsByTagName("interface"):
683
for tag in (make_tag(document, name, prop)
684
for name, prop
685
in self._get_all_dbus_properties()
686
if prop._dbus_interface
687
== if_tag.getAttribute("name")):
688
if_tag.appendChild(tag)
689
# Add the names to the return values for the
690
# "org.freedesktop.DBus.Properties" methods
691
if (if_tag.getAttribute("name")
692
== "org.freedesktop.DBus.Properties"):
693
for cn in if_tag.getElementsByTagName("method"):
694
if cn.getAttribute("name") == "Get":
695
for arg in cn.getElementsByTagName("arg"):
696
if (arg.getAttribute("direction")
697
== "out"):
698
arg.setAttribute("name", "value")
699
elif cn.getAttribute("name") == "GetAll":
700
for arg in cn.getElementsByTagName("arg"):
701
if (arg.getAttribute("direction")
702
== "out"):
703
arg.setAttribute("name", "props")
704
xmlstring = document.toxml("utf-8")
705
document.unlink()
706
except (AttributeError, xml.dom.DOMException,
707
xml.parsers.expat.ExpatError), error:
708
logger.error("Failed to override Introspection method",
709
error)
710
return xmlstring
711
712
713
class ClientDBus(Client, DBusObjectWithProperties):
481
714
"""A Client class using D-Bus
482
715
483
716
Attributes:
484
717
dbus_object_path: dbus.ObjectPath
485
718
bus: dbus.SystemBus()
486
719
"""
720
721
runtime_expansions = (Client.runtime_expansions
722
+ ("dbus_object_path",))
723
487
724
# dbus.service.Object doesn't use super(), so we can't either.
488
725
489
726
def __init__(self, bus = None, *args, **kwargs):
727
self._approvals_pending = 0
490
728
self.bus = bus
491
729
Client.__init__(self, *args, **kwargs)
492
730
# Only now, when this client is initialized, can it show up on
493
731
# the D-Bus
732
client_object_name = unicode(self.name).translate(
733
{ord("."): ord("_"),
734
ord("-"): ord("_")})
494
735
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)
736
("/clients/" + client_object_name))
737
DBusObjectWithProperties.__init__(self, self.bus,
738
self.dbus_object_path)
739
740
def _get_approvals_pending(self):
741
return self._approvals_pending
742
def _set_approvals_pending(self, value):
743
old_value = self._approvals_pending
744
self._approvals_pending = value
745
bval = bool(value)
746
if (hasattr(self, "dbus_object_path")
747
and bval is not bool(old_value)):
748
dbus_bool = dbus.Boolean(bval, variant_level=1)
749
self.PropertyChanged(dbus.String("ApprovalPending"),
750
dbus_bool)
751
752
approvals_pending = property(_get_approvals_pending,
753
_set_approvals_pending)
754
del _get_approvals_pending, _set_approvals_pending
499
755
500
756
@staticmethod
501
757
def _datetime_to_dbus(dt, variant_level=0):
504
760
variant_level=variant_level)
505
761
506
762
def enable(self):
507
oldstate = getattr(self, u"enabled", False)
763
oldstate = getattr(self, "enabled", False)
508
764
r = Client.enable(self)
509
765
if oldstate != self.enabled:
510
766
# Emit D-Bus signals
511
self.PropertyChanged(dbus.String(u"enabled"),
767
self.PropertyChanged(dbus.String("Enabled"),
512
768
dbus.Boolean(True, variant_level=1))
513
769
self.PropertyChanged(
514
dbus.String(u"last_enabled"),
770
dbus.String("LastEnabled"),
515
771
self._datetime_to_dbus(self.last_enabled,
516
772
variant_level=1))
517
773
return r
518
774
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:
775
def disable(self, quiet = False):
776
oldstate = getattr(self, "enabled", False)
777
r = Client.disable(self, quiet=quiet)
778
if not quiet and oldstate != self.enabled:
523
779
# Emit D-Bus signal
524
self.PropertyChanged(dbus.String(u"enabled"),
780
self.PropertyChanged(dbus.String("Enabled"),
525
781
dbus.Boolean(False, variant_level=1))
526
782
return r
527
783
530
786
self.remove_from_connection()
531
787
except LookupError:
532
788
pass
533
if hasattr(dbus.service.Object, u"__del__"):
534
dbus.service.Object.__del__(self, *args, **kwargs)
789
if hasattr(DBusObjectWithProperties, "__del__"):
790
DBusObjectWithProperties.__del__(self, *args, **kwargs)
535
791
Client.__del__(self, *args, **kwargs)
536
792
537
793
def checker_callback(self, pid, condition, command,
539
795
self.checker_callback_tag = None
540
796
self.checker = None
541
797
# Emit D-Bus signal
542
self.PropertyChanged(dbus.String(u"checker_running"),
798
self.PropertyChanged(dbus.String("CheckerRunning"),
543
799
dbus.Boolean(False, variant_level=1))
544
800
if os.WIFEXITED(condition):
545
801
exitstatus = os.WEXITSTATUS(condition)
560
816
r = Client.checked_ok(self, *args, **kwargs)
561
817
# Emit D-Bus signal
562
818
self.PropertyChanged(
563
dbus.String(u"last_checked_ok"),
819
dbus.String("LastCheckedOK"),
564
820
(self._datetime_to_dbus(self.last_checked_ok,
565
821
variant_level=1)))
566
822
return r
567
823
824
def need_approval(self, *args, **kwargs):
825
r = Client.need_approval(self, *args, **kwargs)
826
# Emit D-Bus signal
827
self.PropertyChanged(
828
dbus.String("LastApprovalRequest"),
829
(self._datetime_to_dbus(self.last_approval_request,
830
variant_level=1)))
831
return r
832
568
833
def start_checker(self, *args, **kwargs):
569
834
old_checker = self.checker
570
835
if self.checker is not None:
578
843
# Emit D-Bus signal
579
844
self.CheckerStarted(self.current_checker_command)
580
845
self.PropertyChanged(
581
dbus.String(u"checker_running"),
846
dbus.String("CheckerRunning"),
582
847
dbus.Boolean(True, variant_level=1))
583
848
return r
584
849
585
850
def stop_checker(self, *args, **kwargs):
586
old_checker = getattr(self, u"checker", None)
851
old_checker = getattr(self, "checker", None)
587
852
r = Client.stop_checker(self, *args, **kwargs)
588
853
if (old_checker is not None
589
and getattr(self, u"checker", None) is None):
590
self.PropertyChanged(dbus.String(u"checker_running"),
854
and getattr(self, "checker", None) is None):
855
self.PropertyChanged(dbus.String("CheckerRunning"),
591
856
dbus.Boolean(False, variant_level=1))
592
857
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()
858
859
def _reset_approved(self):
860
self._approved = None
861
return False
862
863
def approve(self, value=True):
864
self.send_changedstate()
865
self._approved = value
866
gobject.timeout_add(self._timedelta_to_milliseconds
867
(self.approval_duration),
868
self._reset_approved)
869
870
871
## D-Bus methods, signals & properties
872
_interface = "se.bsnet.fukt.Mandos.Client"
873
874
## Signals
601
875
602
876
# CheckerCompleted - signal
603
@dbus.service.signal(_interface, signature=u"nxs")
877
@dbus.service.signal(_interface, signature="nxs")
604
878
def CheckerCompleted(self, exitcode, waitstatus, command):
605
879
"D-Bus signal"
606
880
pass
607
881
608
882
# CheckerStarted - signal
609
@dbus.service.signal(_interface, signature=u"s")
883
@dbus.service.signal(_interface, signature="s")
610
884
def CheckerStarted(self, command):
611
885
"D-Bus signal"
612
886
pass
613
887
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
888
# PropertyChanged - signal
663
@dbus.service.signal(_interface, signature=u"sv")
889
@dbus.service.signal(_interface, signature="sv")
664
890
def PropertyChanged(self, property, value):
665
891
"D-Bus signal"
666
892
pass
667
893
668
# ReceivedSecret - signal
894
# GotSecret - signal
669
895
@dbus.service.signal(_interface)
670
def ReceivedSecret(self):
671
"D-Bus signal"
896
def GotSecret(self):
897
"""D-Bus signal
898
Is sent after a successful transfer of secret from the Mandos
899
server to mandos-client
900
"""
672
901
pass
673
902
674
903
# Rejected - signal
675
@dbus.service.signal(_interface)
676
def Rejected(self):
904
@dbus.service.signal(_interface, signature="s")
905
def Rejected(self, reason):
677
906
"D-Bus signal"
678
907
pass
679
908
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)))
909
# NeedApproval - signal
910
@dbus.service.signal(_interface, signature="tb")
911
def NeedApproval(self, timeout, default):
912
"D-Bus signal"
913
return self.need_approval()
914
915
## Methods
916
917
# Approve - method
918
@dbus.service.method(_interface, in_signature="b")
919
def Approve(self, value):
920
self.approve(value)
921
922
# CheckedOK - method
923
@dbus.service.method(_interface)
924
def CheckedOK(self):
925
return self.checked_ok()
723
926
724
927
# Enable - method
725
928
@dbus.service.method(_interface)
744
947
def StopChecker(self):
745
948
self.stop_checker()
746
949
950
## Properties
951
952
# ApprovalPending - property
953
@dbus_service_property(_interface, signature="b", access="read")
954
def ApprovalPending_dbus_property(self):
955
return dbus.Boolean(bool(self.approvals_pending))
956
957
# ApprovedByDefault - property
958
@dbus_service_property(_interface, signature="b",
959
access="readwrite")
960
def ApprovedByDefault_dbus_property(self, value=None):
961
if value is None: # get
962
return dbus.Boolean(self.approved_by_default)
963
self.approved_by_default = bool(value)
964
# Emit D-Bus signal
965
self.PropertyChanged(dbus.String("ApprovedByDefault"),
966
dbus.Boolean(value, variant_level=1))
967
968
# ApprovalDelay - property
969
@dbus_service_property(_interface, signature="t",
970
access="readwrite")
971
def ApprovalDelay_dbus_property(self, value=None):
972
if value is None: # get
973
return dbus.UInt64(self.approval_delay_milliseconds())
974
self.approval_delay = datetime.timedelta(0, 0, 0, value)
975
# Emit D-Bus signal
976
self.PropertyChanged(dbus.String("ApprovalDelay"),
977
dbus.UInt64(value, variant_level=1))
978
979
# ApprovalDuration - property
980
@dbus_service_property(_interface, signature="t",
981
access="readwrite")
982
def ApprovalDuration_dbus_property(self, value=None):
983
if value is None: # get
984
return dbus.UInt64(self._timedelta_to_milliseconds(
985
self.approval_duration))
986
self.approval_duration = datetime.timedelta(0, 0, 0, value)
987
# Emit D-Bus signal
988
self.PropertyChanged(dbus.String("ApprovalDuration"),
989
dbus.UInt64(value, variant_level=1))
990
991
# Name - property
992
@dbus_service_property(_interface, signature="s", access="read")
993
def Name_dbus_property(self):
994
return dbus.String(self.name)
995
996
# Fingerprint - property
997
@dbus_service_property(_interface, signature="s", access="read")
998
def Fingerprint_dbus_property(self):
999
return dbus.String(self.fingerprint)
1000
1001
# Host - property
1002
@dbus_service_property(_interface, signature="s",
1003
access="readwrite")
1004
def Host_dbus_property(self, value=None):
1005
if value is None: # get
1006
return dbus.String(self.host)
1007
self.host = value
1008
# Emit D-Bus signal
1009
self.PropertyChanged(dbus.String("Host"),
1010
dbus.String(value, variant_level=1))
1011
1012
# Created - property
1013
@dbus_service_property(_interface, signature="s", access="read")
1014
def Created_dbus_property(self):
1015
return dbus.String(self._datetime_to_dbus(self.created))
1016
1017
# LastEnabled - property
1018
@dbus_service_property(_interface, signature="s", access="read")
1019
def LastEnabled_dbus_property(self):
1020
if self.last_enabled is None:
1021
return dbus.String("")
1022
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1023
1024
# Enabled - property
1025
@dbus_service_property(_interface, signature="b",
1026
access="readwrite")
1027
def Enabled_dbus_property(self, value=None):
1028
if value is None: # get
1029
return dbus.Boolean(self.enabled)
1030
if value:
1031
self.enable()
1032
else:
1033
self.disable()
1034
1035
# LastCheckedOK - property
1036
@dbus_service_property(_interface, signature="s",
1037
access="readwrite")
1038
def LastCheckedOK_dbus_property(self, value=None):
1039
if value is not None:
1040
self.checked_ok()
1041
return
1042
if self.last_checked_ok is None:
1043
return dbus.String("")
1044
return dbus.String(self._datetime_to_dbus(self
1045
.last_checked_ok))
1046
1047
# LastApprovalRequest - property
1048
@dbus_service_property(_interface, signature="s", access="read")
1049
def LastApprovalRequest_dbus_property(self):
1050
if self.last_approval_request is None:
1051
return dbus.String("")
1052
return dbus.String(self.
1053
_datetime_to_dbus(self
1054
.last_approval_request))
1055
1056
# Timeout - property
1057
@dbus_service_property(_interface, signature="t",
1058
access="readwrite")
1059
def Timeout_dbus_property(self, value=None):
1060
if value is None: # get
1061
return dbus.UInt64(self.timeout_milliseconds())
1062
self.timeout = datetime.timedelta(0, 0, 0, value)
1063
# Emit D-Bus signal
1064
self.PropertyChanged(dbus.String("Timeout"),
1065
dbus.UInt64(value, variant_level=1))
1066
if getattr(self, "disable_initiator_tag", None) is None:
1067
return
1068
# Reschedule timeout
1069
gobject.source_remove(self.disable_initiator_tag)
1070
self.disable_initiator_tag = None
1071
time_to_die = (self.
1072
_timedelta_to_milliseconds((self
1073
.last_checked_ok
1074
+ self.timeout)
1075
- datetime.datetime
1076
.utcnow()))
1077
if time_to_die <= 0:
1078
# The timeout has passed
1079
self.disable()
1080
else:
1081
self.disable_initiator_tag = (gobject.timeout_add
1082
(time_to_die, self.disable))
1083
1084
# Interval - property
1085
@dbus_service_property(_interface, signature="t",
1086
access="readwrite")
1087
def Interval_dbus_property(self, value=None):
1088
if value is None: # get
1089
return dbus.UInt64(self.interval_milliseconds())
1090
self.interval = datetime.timedelta(0, 0, 0, value)
1091
# Emit D-Bus signal
1092
self.PropertyChanged(dbus.String("Interval"),
1093
dbus.UInt64(value, variant_level=1))
1094
if getattr(self, "checker_initiator_tag", None) is None:
1095
return
1096
# Reschedule checker run
1097
gobject.source_remove(self.checker_initiator_tag)
1098
self.checker_initiator_tag = (gobject.timeout_add
1099
(value, self.start_checker))
1100
self.start_checker() # Start one now, too
1101
1102
# Checker - property
1103
@dbus_service_property(_interface, signature="s",
1104
access="readwrite")
1105
def Checker_dbus_property(self, value=None):
1106
if value is None: # get
1107
return dbus.String(self.checker_command)
1108
self.checker_command = value
1109
# Emit D-Bus signal
1110
self.PropertyChanged(dbus.String("Checker"),
1111
dbus.String(self.checker_command,
1112
variant_level=1))
1113
1114
# CheckerRunning - property
1115
@dbus_service_property(_interface, signature="b",
1116
access="readwrite")
1117
def CheckerRunning_dbus_property(self, value=None):
1118
if value is None: # get
1119
return dbus.Boolean(self.checker is not None)
1120
if value:
1121
self.start_checker()
1122
else:
1123
self.stop_checker()
1124
1125
# ObjectPath - property
1126
@dbus_service_property(_interface, signature="o", access="read")
1127
def ObjectPath_dbus_property(self):
1128
return self.dbus_object_path # is already a dbus.ObjectPath
1129
1130
# Secret = property
1131
@dbus_service_property(_interface, signature="ay",
1132
access="write", byte_arrays=True)
1133
def Secret_dbus_property(self, value):
1134
self.secret = str(value)
1135
747
1136
del _interface
748
1137
749
1138
1139
class ProxyClient(object):
1140
def __init__(self, child_pipe, fpr, address):
1141
self._pipe = child_pipe
1142
self._pipe.send(('init', fpr, address))
1143
if not self._pipe.recv():
1144
raise KeyError()
1145
1146
def __getattribute__(self, name):
1147
if(name == '_pipe'):
1148
return super(ProxyClient, self).__getattribute__(name)
1149
self._pipe.send(('getattr', name))
1150
data = self._pipe.recv()
1151
if data[0] == 'data':
1152
return data[1]
1153
if data[0] == 'function':
1154
def func(*args, **kwargs):
1155
self._pipe.send(('funcall', name, args, kwargs))
1156
return self._pipe.recv()[1]
1157
return func
1158
1159
def __setattr__(self, name, value):
1160
if(name == '_pipe'):
1161
return super(ProxyClient, self).__setattr__(name, value)
1162
self._pipe.send(('setattr', name, value))
1163
1164
750
1165
class ClientHandler(socketserver.BaseRequestHandler, object):
751
1166
"""A class to handle client connections.
752
1167
754
1169
Note: This will run in its own forked process."""
755
1170
756
1171
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:
1172
with contextlib.closing(self.server.child_pipe) as child_pipe:
1173
logger.info("TCP connection from: %s",
1174
unicode(self.client_address))
1175
logger.debug("Pipe FD: %d",
1176
self.server.child_pipe.fileno())
1177
762
1178
session = (gnutls.connection
763
1179
.ClientSession(self.request,
764
1180
gnutls.connection
765
1181
.X509Credentials()))
766
767
line = self.request.makefile().readline()
768
logger.debug(u"Protocol version: %r", line)
769
try:
770
if int(line.strip().split()[0]) > 1:
771
raise RuntimeError
772
except (ValueError, IndexError, RuntimeError), error:
773
logger.error(u"Unknown protocol version: %s", error)
774
return
775
1182
776
1183
# Note: gnutls.connection.X509Credentials is really a
777
1184
# generic GnuTLS certificate credentials object so long as
778
1185
# no X.509 keys are added to it. Therefore, we can use it
779
1186
# here despite using OpenPGP certificates.
780
781
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
782
# u"+AES-256-CBC", u"+SHA1",
783
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
784
# u"+DHE-DSS"))
1187
1188
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1189
# "+AES-256-CBC", "+SHA1",
1190
# "+COMP-NULL", "+CTYPE-OPENPGP",
1191
# "+DHE-DSS"))
785
1192
# Use a fallback default, since this MUST be set.
786
1193
priority = self.server.gnutls_priority
787
1194
if priority is None:
788
priority = u"NORMAL"
1195
priority = "NORMAL"
789
1196
(gnutls.library.functions
790
1197
.gnutls_priority_set_direct(session._c_object,
791
1198
priority, None))
792
1199
1200
# Start communication using the Mandos protocol
1201
# Get protocol number
1202
line = self.request.makefile().readline()
1203
logger.debug("Protocol version: %r", line)
1204
try:
1205
if int(line.strip().split()[0]) > 1:
1206
raise RuntimeError
1207
except (ValueError, IndexError, RuntimeError), error:
1208
logger.error("Unknown protocol version: %s", error)
1209
return
1210
1211
# Start GnuTLS connection
793
1212
try:
794
1213
session.handshake()
795
1214
except gnutls.errors.GNUTLSError, error:
796
logger.warning(u"Handshake failed: %s", error)
1215
logger.warning("Handshake failed: %s", error)
797
1216
# Do not run session.bye() here: the session is not
798
1217
# established. Just abandon the request.
799
1218
return
800
logger.debug(u"Handshake succeeded")
1219
logger.debug("Handshake succeeded")
1220
1221
approval_required = False
801
1222
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)
1223
try:
1224
fpr = self.fingerprint(self.peer_certificate
1225
(session))
1226
except (TypeError, gnutls.errors.GNUTLSError), error:
1227
logger.warning("Bad certificate: %s", error)
1228
return
1229
logger.debug("Fingerprint: %s", fpr)
1230
1231
try:
1232
client = ProxyClient(child_pipe, fpr,
1233
self.client_address)
1234
except KeyError:
1235
return
1236
1237
if client.approval_delay:
1238
delay = client.approval_delay
1239
client.approvals_pending += 1
1240
approval_required = True
1241
1242
while True:
1243
if not client.enabled:
1244
logger.warning("Client %s is disabled",
1245
client.name)
1246
if self.server.use_dbus:
1247
# Emit D-Bus signal
1248
client.Rejected("Disabled")
1249
return
1250
1251
if client._approved or not client.approval_delay:
1252
#We are approved or approval is disabled
1253
break
1254
elif client._approved is None:
1255
logger.info("Client %s needs approval",
1256
client.name)
1257
if self.server.use_dbus:
1258
# Emit D-Bus signal
1259
client.NeedApproval(
1260
client.approval_delay_milliseconds(),
1261
client.approved_by_default)
1262
else:
1263
logger.warning("Client %s was not approved",
1264
client.name)
1265
if self.server.use_dbus:
1266
# Emit D-Bus signal
1267
client.Rejected("Denied")
1268
return
1269
1270
#wait until timeout or approved
1271
#x = float(client._timedelta_to_milliseconds(delay))
1272
time = datetime.datetime.now()
1273
client.changedstate.acquire()
1274
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1275
client.changedstate.release()
1276
time2 = datetime.datetime.now()
1277
if (time2 - time) >= delay:
1278
if not client.approved_by_default:
1279
logger.warning("Client %s timed out while"
1280
" waiting for approval",
1281
client.name)
1282
if self.server.use_dbus:
1283
# Emit D-Bus signal
1284
client.Rejected("Approval timed out")
1285
return
1286
else:
1287
break
1288
else:
1289
delay -= time2 - time
1290
1291
sent_size = 0
1292
while sent_size < len(client.secret):
1293
try:
1294
sent = session.send(client.secret[sent_size:])
1295
except (gnutls.errors.GNUTLSError), error:
1296
logger.warning("gnutls send failed")
1297
return
1298
logger.debug("Sent: %d, remaining: %d",
1299
sent, len(client.secret)
1300
- (sent_size + sent))
1301
sent_size += sent
1302
1303
logger.info("Sending secret to %s", client.name)
1304
# bump the timeout as if seen
1305
client.checked_ok()
1306
if self.server.use_dbus:
1307
# Emit D-Bus signal
1308
client.GotSecret()
808
1309
809
for c in self.server.clients:
810
if c.fingerprint == fpr:
811
client = c
812
break
813
else:
814
ipc.write(u"NOTFOUND %s %s\n"
815
% (fpr, unicode(self.client_address)))
816
session.bye()
817
return
818
# Have to check if client.still_valid(), since it is
819
# possible that the client timed out while establishing
820
# the GnuTLS session.
821
if not client.still_valid():
822
ipc.write(u"INVALID %s\n" % client.name)
823
session.bye()
824
return
825
ipc.write(u"SENDING %s\n" % client.name)
826
sent_size = 0
827
while sent_size < len(client.secret):
828
sent = session.send(client.secret[sent_size:])
829
logger.debug(u"Sent: %d, remaining: %d",
830
sent, len(client.secret)
831
- (sent_size + sent))
832
sent_size += sent
833
session.bye()
1310
finally:
1311
if approval_required:
1312
client.approvals_pending -= 1
1313
try:
1314
session.bye()
1315
except (gnutls.errors.GNUTLSError), error:
1316
logger.warning("GnuTLS bye failed")
834
1317
835
1318
@staticmethod
836
1319
def peer_certificate(session):
846
1329
.gnutls_certificate_get_peers
847
1330
(session._c_object, ctypes.byref(list_size)))
848
1331
if not bool(cert_list) and list_size.value != 0:
849
raise gnutls.errors.GNUTLSError(u"error getting peer"
850
u" certificate")
1332
raise gnutls.errors.GNUTLSError("error getting peer"
1333
" certificate")
851
1334
if list_size.value == 0:
852
1335
return None
853
1336
cert = cert_list[0]
879
1362
if crtverify.value != 0:
880
1363
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
881
1364
raise (gnutls.errors.CertificateSecurityError
882
(u"Verify failed"))
1365
("Verify failed"))
883
1366
# New buffer for the fingerprint
884
1367
buf = ctypes.create_string_buffer(20)
885
1368
buf_len = ctypes.c_size_t()
892
1375
# Convert the buffer to a Python bytestring
893
1376
fpr = ctypes.string_at(buf, buf_len.value)
894
1377
# Convert the bytestring to hexadecimal notation
895
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1378
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
896
1379
return hex_fpr
897
1380
898
1381
899
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
900
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1382
class MultiprocessingMixIn(object):
1383
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1384
def sub_process_main(self, request, address):
1385
try:
1386
self.finish_request(request, address)
1387
except:
1388
self.handle_error(request, address)
1389
self.close_request(request)
1390
1391
def process_request(self, request, address):
1392
"""Start a new process to process the request."""
1393
multiprocessing.Process(target = self.sub_process_main,
1394
args = (request, address)).start()
1395
1396
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1397
""" adds a pipe to the MixIn """
901
1398
def process_request(self, request, client_address):
902
1399
"""Overrides and wraps the original process_request().
903
1400
904
1401
This function creates a new pipe in self.pipe
905
1402
"""
906
self.pipe = os.pipe()
907
super(ForkingMixInWithPipe,
1403
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1404
1405
super(MultiprocessingMixInWithPipe,
908
1406
self).process_request(request, client_address)
909
os.close(self.pipe[1]) # close write end
910
self.add_pipe(self.pipe[0])
911
def add_pipe(self, pipe):
1407
self.child_pipe.close()
1408
self.add_pipe(parent_pipe)
1409
1410
def add_pipe(self, parent_pipe):
912
1411
"""Dummy function; override as necessary"""
913
os.close(pipe)
914
915
916
class IPv6_TCPServer(ForkingMixInWithPipe,
1412
raise NotImplementedError
1413
1414
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
917
1415
socketserver.TCPServer, object):
918
1416
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
919
1417
935
1433
bind to an address or port if they were not specified."""
936
1434
if self.interface is not None:
937
1435
if SO_BINDTODEVICE is None:
938
logger.error(u"SO_BINDTODEVICE does not exist;"
939
u" cannot bind to interface %s",
1436
logger.error("SO_BINDTODEVICE does not exist;"
1437
" cannot bind to interface %s",
940
1438
self.interface)
941
1439
else:
942
1440
try:
943
1441
self.socket.setsockopt(socket.SOL_SOCKET,
944
1442
SO_BINDTODEVICE,
945
1443
str(self.interface
946
+ u'\0'))
1444
+ '\0'))
947
1445
except socket.error, error:
948
1446
if error[0] == errno.EPERM:
949
logger.error(u"No permission to"
950
u" bind to interface %s",
1447
logger.error("No permission to"
1448
" bind to interface %s",
951
1449
self.interface)
952
1450
elif error[0] == errno.ENOPROTOOPT:
953
logger.error(u"SO_BINDTODEVICE not available;"
954
u" cannot bind to interface %s",
1451
logger.error("SO_BINDTODEVICE not available;"
1452
" cannot bind to interface %s",
955
1453
self.interface)
956
1454
else:
957
1455
raise
959
1457
if self.server_address[0] or self.server_address[1]:
960
1458
if not self.server_address[0]:
961
1459
if self.address_family == socket.AF_INET6:
962
any_address = u"::" # in6addr_any
1460
any_address = "::" # in6addr_any
963
1461
else:
964
1462
any_address = socket.INADDR_ANY
965
1463
self.server_address = (any_address,
983
1481
clients: set of Client objects
984
1482
gnutls_priority GnuTLS priority string
985
1483
use_dbus: Boolean; to emit D-Bus signals or not
986
clients: set of Client objects
987
gnutls_priority GnuTLS priority string
988
use_dbus: Boolean; to emit D-Bus signals or not
989
1484
990
1485
Assumes a gobject.MainLoop event loop.
991
1486
"""
1007
1502
return socketserver.TCPServer.server_activate(self)
1008
1503
def enable(self):
1009
1504
self.enabled = True
1010
def add_pipe(self, pipe):
1505
def add_pipe(self, parent_pipe):
1011
1506
# Call "handle_ipc" for both data and EOF events
1012
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1013
self.handle_ipc)
1014
def handle_ipc(self, source, condition, file_objects={}):
1507
gobject.io_add_watch(parent_pipe.fileno(),
1508
gobject.IO_IN | gobject.IO_HUP,
1509
functools.partial(self.handle_ipc,
1510
parent_pipe = parent_pipe))
1511
1512
def handle_ipc(self, source, condition, parent_pipe=None,
1513
client_object=None):
1015
1514
condition_names = {
1016
gobject.IO_IN: u"IN", # There is data to read.
1017
gobject.IO_OUT: u"OUT", # Data can be written (without
1515
gobject.IO_IN: "IN", # There is data to read.
1516
gobject.IO_OUT: "OUT", # Data can be written (without
1018
1517
# blocking).
1019
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1020
gobject.IO_ERR: u"ERR", # Error condition.
1021
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1518
gobject.IO_PRI: "PRI", # There is urgent data to read.
1519
gobject.IO_ERR: "ERR", # Error condition.
1520
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1022
1521
# broken, usually for pipes and
1023
1522
# sockets).
1024
1523
}
1026
1525
for cond, name in
1027
1526
condition_names.iteritems()
1028
1527
if cond & condition)
1029
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1030
conditions_string)
1031
1032
# Turn the pipe file descriptor into a Python file object
1033
if source not in file_objects:
1034
file_objects[source] = os.fdopen(source, u"r", 1)
1035
1036
# Read a line from the file object
1037
cmdline = file_objects[source].readline()
1038
if not cmdline: # Empty line means end of file
1039
# close the IPC pipe
1040
file_objects[source].close()
1041
del file_objects[source]
1042
1043
# Stop calling this function
1044
return False
1045
1046
logger.debug(u"IPC command: %r", cmdline)
1047
1048
# Parse and act on command
1049
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1050
1051
if cmd == u"NOTFOUND":
1052
logger.warning(u"Client not found for fingerprint: %s",
1053
args)
1054
if self.use_dbus:
1055
# Emit D-Bus signal
1056
mandos_dbus_service.ClientNotFound(args)
1057
elif cmd == u"INVALID":
1058
for client in self.clients:
1059
if client.name == args:
1060
logger.warning(u"Client %s is invalid", args)
1061
if self.use_dbus:
1062
# Emit D-Bus signal
1063
client.Rejected()
1064
break
1065
else:
1066
logger.error(u"Unknown client %s is invalid", args)
1067
elif cmd == u"SENDING":
1068
for client in self.clients:
1069
if client.name == args:
1070
logger.info(u"Sending secret to %s", client.name)
1071
client.checked_ok()
1072
if self.use_dbus:
1073
# Emit D-Bus signal
1074
client.ReceivedSecret()
1075
break
1076
else:
1077
logger.error(u"Sending secret to unknown client %s",
1078
args)
1079
else:
1080
logger.error(u"Unknown IPC command: %r", cmdline)
1081
1082
# Keep calling this function
1528
# error or the other end of multiprocessing.Pipe has closed
1529
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1530
return False
1531
1532
# Read a request from the child
1533
request = parent_pipe.recv()
1534
command = request[0]
1535
1536
if command == 'init':
1537
fpr = request[1]
1538
address = request[2]
1539
1540
for c in self.clients:
1541
if c.fingerprint == fpr:
1542
client = c
1543
break
1544
else:
1545
logger.warning("Client not found for fingerprint: %s, ad"
1546
"dress: %s", fpr, address)
1547
if self.use_dbus:
1548
# Emit D-Bus signal
1549
mandos_dbus_service.ClientNotFound(fpr, address[0])
1550
parent_pipe.send(False)
1551
return False
1552
1553
gobject.io_add_watch(parent_pipe.fileno(),
1554
gobject.IO_IN | gobject.IO_HUP,
1555
functools.partial(self.handle_ipc,
1556
parent_pipe = parent_pipe,
1557
client_object = client))
1558
parent_pipe.send(True)
1559
# remove the old hook in favor of the new above hook on same fileno
1560
return False
1561
if command == 'funcall':
1562
funcname = request[1]
1563
args = request[2]
1564
kwargs = request[3]
1565
1566
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1567
1568
if command == 'getattr':
1569
attrname = request[1]
1570
if callable(client_object.__getattribute__(attrname)):
1571
parent_pipe.send(('function',))
1572
else:
1573
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1574
1575
if command == 'setattr':
1576
attrname = request[1]
1577
value = request[2]
1578
setattr(client_object, attrname, value)
1579
1083
1580
return True
1084
1581
1085
1582
1086
1583
def string_to_delta(interval):
1087
1584
"""Parse a string and return a datetime.timedelta
1088
1585
1089
>>> string_to_delta(u'7d')
1586
>>> string_to_delta('7d')
1090
1587
datetime.timedelta(7)
1091
>>> string_to_delta(u'60s')
1588
>>> string_to_delta('60s')
1092
1589
datetime.timedelta(0, 60)
1093
>>> string_to_delta(u'60m')
1590
>>> string_to_delta('60m')
1094
1591
datetime.timedelta(0, 3600)
1095
>>> string_to_delta(u'24h')
1592
>>> string_to_delta('24h')
1096
1593
datetime.timedelta(1)
1097
>>> string_to_delta(u'1w')
1594
>>> string_to_delta('1w')
1098
1595
datetime.timedelta(7)
1099
>>> string_to_delta(u'5m 30s')
1596
>>> string_to_delta('5m 30s')
1100
1597
datetime.timedelta(0, 330)
1101
1598
"""
1102
1599
timevalue = datetime.timedelta(0)
1104
1601
try:
1105
1602
suffix = unicode(s[-1])
1106
1603
value = int(s[:-1])
1107
if suffix == u"d":
1604
if suffix == "d":
1108
1605
delta = datetime.timedelta(value)
1109
elif suffix == u"s":
1606
elif suffix == "s":
1110
1607
delta = datetime.timedelta(0, value)
1111
elif suffix == u"m":
1608
elif suffix == "m":
1112
1609
delta = datetime.timedelta(0, 0, 0, 0, value)
1113
elif suffix == u"h":
1610
elif suffix == "h":
1114
1611
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1115
elif suffix == u"w":
1612
elif suffix == "w":
1116
1613
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1117
1614
else:
1118
raise ValueError
1119
except (ValueError, IndexError):
1120
raise ValueError
1615
raise ValueError("Unknown suffix %r" % suffix)
1616
except (ValueError, IndexError), e:
1617
raise ValueError(*(e.args))
1121
1618
timevalue += delta
1122
1619
return timevalue
1123
1620
1129
1626
global if_nametoindex
1130
1627
try:
1131
1628
if_nametoindex = (ctypes.cdll.LoadLibrary
1132
(ctypes.util.find_library(u"c"))
1629
(ctypes.util.find_library("c"))
1133
1630
.if_nametoindex)
1134
1631
except (OSError, AttributeError):
1135
logger.warning(u"Doing if_nametoindex the hard way")
1632
logger.warning("Doing if_nametoindex the hard way")
1136
1633
def if_nametoindex(interface):
1137
1634
"Get an interface index the hard way, i.e. using fcntl()"
1138
1635
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1139
with closing(socket.socket()) as s:
1636
with contextlib.closing(socket.socket()) as s:
1140
1637
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1141
struct.pack(str(u"16s16x"),
1638
struct.pack(str("16s16x"),
1142
1639
interface))
1143
interface_index = struct.unpack(str(u"I"),
1640
interface_index = struct.unpack(str("I"),
1144
1641
ifreq[16:20])[0]
1145
1642
return interface_index
1146
1643
return if_nametoindex(interface)
1154
1651
sys.exit()
1155
1652
os.setsid()
1156
1653
if not nochdir:
1157
os.chdir(u"/")
1654
os.chdir("/")
1158
1655
if os.fork():
1159
1656
sys.exit()
1160
1657
if not noclose:
1162
1659
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1163
1660
if not stat.S_ISCHR(os.fstat(null).st_mode):
1164
1661
raise OSError(errno.ENODEV,
1165
u"/dev/null not a character device")
1662
"%s not a character device"
1663
% os.path.devnull)
1166
1664
os.dup2(null, sys.stdin.fileno())
1167
1665
os.dup2(null, sys.stdout.fileno())
1168
1666
os.dup2(null, sys.stderr.fileno())
1172
1670
1173
1671
def main():
1174
1672
1175
######################################################################
1673
##################################################################
1176
1674
# Parsing of options, both command line and config file
1177
1675
1178
parser = optparse.OptionParser(version = "%%prog %s" % version)
1179
parser.add_option("-i", u"--interface", type=u"string",
1180
metavar="IF", help=u"Bind to interface IF")
1181
parser.add_option("-a", u"--address", type=u"string",
1182
help=u"Address to listen for requests on")
1183
parser.add_option("-p", u"--port", type=u"int",
1184
help=u"Port number to receive requests on")
1185
parser.add_option("--check", action=u"store_true",
1186
help=u"Run self-test")
1187
parser.add_option("--debug", action=u"store_true",
1188
help=u"Debug mode; run in foreground and log to"
1189
u" terminal")
1190
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1191
u" priority string (see GnuTLS documentation)")
1192
parser.add_option("--servicename", type=u"string",
1193
metavar=u"NAME", help=u"Zeroconf service name")
1194
parser.add_option("--configdir", type=u"string",
1195
default=u"/etc/mandos", metavar=u"DIR",
1196
help=u"Directory to search for configuration"
1197
u" files")
1198
parser.add_option("--no-dbus", action=u"store_false",
1199
dest=u"use_dbus", help=u"Do not provide D-Bus"
1200
u" system bus interface")
1201
parser.add_option("--no-ipv6", action=u"store_false",
1202
dest=u"use_ipv6", help=u"Do not use IPv6")
1203
options = parser.parse_args()[0]
1676
parser = argparse.ArgumentParser()
1677
parser.add_argument("-v", "--version", action="version",
1678
version = "%%(prog)s %s" % version,
1679
help="show version number and exit")
1680
parser.add_argument("-i", "--interface", metavar="IF",
1681
help="Bind to interface IF")
1682
parser.add_argument("-a", "--address",
1683
help="Address to listen for requests on")
1684
parser.add_argument("-p", "--port", type=int,
1685
help="Port number to receive requests on")
1686
parser.add_argument("--check", action="store_true",
1687
help="Run self-test")
1688
parser.add_argument("--debug", action="store_true",
1689
help="Debug mode; run in foreground and log"
1690
" to terminal")
1691
parser.add_argument("--debuglevel", metavar="LEVEL",
1692
help="Debug level for stdout output")
1693
parser.add_argument("--priority", help="GnuTLS"
1694
" priority string (see GnuTLS documentation)")
1695
parser.add_argument("--servicename",
1696
metavar="NAME", help="Zeroconf service name")
1697
parser.add_argument("--configdir",
1698
default="/etc/mandos", metavar="DIR",
1699
help="Directory to search for configuration"
1700
" files")
1701
parser.add_argument("--no-dbus", action="store_false",
1702
dest="use_dbus", help="Do not provide D-Bus"
1703
" system bus interface")
1704
parser.add_argument("--no-ipv6", action="store_false",
1705
dest="use_ipv6", help="Do not use IPv6")
1706
options = parser.parse_args()
1204
1707
1205
1708
if options.check:
1206
1709
import doctest
1208
1711
sys.exit()
1209
1712
1210
1713
# Default values for config file for server-global settings
1211
server_defaults = { u"interface": u"",
1212
u"address": u"",
1213
u"port": u"",
1214
u"debug": u"False",
1215
u"priority":
1216
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1217
u"servicename": u"Mandos",
1218
u"use_dbus": u"True",
1219
u"use_ipv6": u"True",
1714
server_defaults = { "interface": "",
1715
"address": "",
1716
"port": "",
1717
"debug": "False",
1718
"priority":
1719
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1720
"servicename": "Mandos",
1721
"use_dbus": "True",
1722
"use_ipv6": "True",
1723
"debuglevel": "",
1220
1724
}
1221
1725
1222
1726
# Parse config file for server-global settings
1223
1727
server_config = configparser.SafeConfigParser(server_defaults)
1224
1728
del server_defaults
1225
1729
server_config.read(os.path.join(options.configdir,
1226
u"mandos.conf"))
1730
"mandos.conf"))
1227
1731
# Convert the SafeConfigParser object to a dict
1228
1732
server_settings = server_config.defaults()
1229
1733
# Use the appropriate methods on the non-string config options
1230
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1231
server_settings[option] = server_config.getboolean(u"DEFAULT",
1734
for option in ("debug", "use_dbus", "use_ipv6"):
1735
server_settings[option] = server_config.getboolean("DEFAULT",
1232
1736
option)
1233
1737
if server_settings["port"]:
1234
server_settings["port"] = server_config.getint(u"DEFAULT",
1235
u"port")
1738
server_settings["port"] = server_config.getint("DEFAULT",
1739
"port")
1236
1740
del server_config
1237
1741
1238
1742
# Override the settings from the config file with command line
1239
1743
# options, if set.
1240
for option in (u"interface", u"address", u"port", u"debug",
1241
u"priority", u"servicename", u"configdir",
1242
u"use_dbus", u"use_ipv6"):
1744
for option in ("interface", "address", "port", "debug",
1745
"priority", "servicename", "configdir",
1746
"use_dbus", "use_ipv6", "debuglevel"):
1243
1747
value = getattr(options, option)
1244
1748
if value is not None:
1245
1749
server_settings[option] = value
1253
1757
##################################################################
1254
1758
1255
1759
# For convenience
1256
debug = server_settings[u"debug"]
1257
use_dbus = server_settings[u"use_dbus"]
1258
use_ipv6 = server_settings[u"use_ipv6"]
1259
1260
if not debug:
1261
syslogger.setLevel(logging.WARNING)
1262
console.setLevel(logging.WARNING)
1263
1264
if server_settings[u"servicename"] != u"Mandos":
1760
debug = server_settings["debug"]
1761
debuglevel = server_settings["debuglevel"]
1762
use_dbus = server_settings["use_dbus"]
1763
use_ipv6 = server_settings["use_ipv6"]
1764
1765
if server_settings["servicename"] != "Mandos":
1265
1766
syslogger.setFormatter(logging.Formatter
1266
(u'Mandos (%s) [%%(process)d]:'
1267
u' %%(levelname)s: %%(message)s'
1268
% server_settings[u"servicename"]))
1767
('Mandos (%s) [%%(process)d]:'
1768
' %%(levelname)s: %%(message)s'
1769
% server_settings["servicename"]))
1269
1770
1270
1771
# Parse config file with clients
1271
client_defaults = { u"timeout": u"1h",
1272
u"interval": u"5m",
1273
u"checker": u"fping -q -- %%(host)s",
1274
u"host": u"",
1772
client_defaults = { "timeout": "1h",
1773
"interval": "5m",
1774
"checker": "fping -q -- %%(host)s",
1775
"host": "",
1776
"approval_delay": "0s",
1777
"approval_duration": "1s",
1275
1778
}
1276
1779
client_config = configparser.SafeConfigParser(client_defaults)
1277
client_config.read(os.path.join(server_settings[u"configdir"],
1278
u"clients.conf"))
1780
client_config.read(os.path.join(server_settings["configdir"],
1781
"clients.conf"))
1279
1782
1280
1783
global mandos_dbus_service
1281
1784
mandos_dbus_service = None
1282
1785
1283
tcp_server = MandosServer((server_settings[u"address"],
1284
server_settings[u"port"]),
1786
tcp_server = MandosServer((server_settings["address"],
1787
server_settings["port"]),
1285
1788
ClientHandler,
1286
interface=server_settings[u"interface"],
1789
interface=(server_settings["interface"]
1790
or None),
1287
1791
use_ipv6=use_ipv6,
1288
1792
gnutls_priority=
1289
server_settings[u"priority"],
1793
server_settings["priority"],
1290
1794
use_dbus=use_dbus)
1291
pidfilename = u"/var/run/mandos.pid"
1292
try:
1293
pidfile = open(pidfilename, u"w")
1294
except IOError:
1295
logger.error(u"Could not open file %r", pidfilename)
1795
if not debug:
1796
pidfilename = "/var/run/mandos.pid"
1797
try:
1798
pidfile = open(pidfilename, "w")
1799
except IOError:
1800
logger.error("Could not open file %r", pidfilename)
1296
1801
1297
1802
try:
1298
uid = pwd.getpwnam(u"_mandos").pw_uid
1299
gid = pwd.getpwnam(u"_mandos").pw_gid
1803
uid = pwd.getpwnam("_mandos").pw_uid
1804
gid = pwd.getpwnam("_mandos").pw_gid
1300
1805
except KeyError:
1301
1806
try:
1302
uid = pwd.getpwnam(u"mandos").pw_uid
1303
gid = pwd.getpwnam(u"mandos").pw_gid
1807
uid = pwd.getpwnam("mandos").pw_uid
1808
gid = pwd.getpwnam("mandos").pw_gid
1304
1809
except KeyError:
1305
1810
try:
1306
uid = pwd.getpwnam(u"nobody").pw_uid
1307
gid = pwd.getpwnam(u"nobody").pw_gid
1811
uid = pwd.getpwnam("nobody").pw_uid
1812
gid = pwd.getpwnam("nobody").pw_gid
1308
1813
except KeyError:
1309
1814
uid = 65534
1310
1815
gid = 65534
1315
1820
if error[0] != errno.EPERM:
1316
1821
raise error
1317
1822
1318
# Enable all possible GnuTLS debugging
1823
if not debug and not debuglevel:
1824
syslogger.setLevel(logging.WARNING)
1825
console.setLevel(logging.WARNING)
1826
if debuglevel:
1827
level = getattr(logging, debuglevel.upper())
1828
syslogger.setLevel(level)
1829
console.setLevel(level)
1830
1319
1831
if debug:
1832
# Enable all possible GnuTLS debugging
1833
1320
1834
# "Use a log level over 10 to enable all debugging options."
1321
1835
# - GnuTLS manual
1322
1836
gnutls.library.functions.gnutls_global_set_log_level(11)
1323
1837
1324
1838
@gnutls.library.types.gnutls_log_func
1325
1839
def debug_gnutls(level, string):
1326
logger.debug(u"GnuTLS: %s", string[:-1])
1840
logger.debug("GnuTLS: %s", string[:-1])
1327
1841
1328
1842
(gnutls.library.functions
1329
1843
.gnutls_global_set_log_function(debug_gnutls))
1844
1845
# Redirect stdin so all checkers get /dev/null
1846
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1847
os.dup2(null, sys.stdin.fileno())
1848
if null > 2:
1849
os.close(null)
1850
else:
1851
# No console logging
1852
logger.removeHandler(console)
1853
1854
# Need to fork before connecting to D-Bus
1855
if not debug:
1856
# Close all input and output, do double fork, etc.
1857
daemon()
1330
1858
1331
1859
global main_loop
1332
1860
# From the Avahi example code
1335
1863
bus = dbus.SystemBus()
1336
1864
# End of Avahi example code
1337
1865
if use_dbus:
1338
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1866
try:
1867
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1868
bus, do_not_queue=True)
1869
except dbus.exceptions.NameExistsException, e:
1870
logger.error(unicode(e) + ", disabling D-Bus")
1871
use_dbus = False
1872
server_settings["use_dbus"] = False
1873
tcp_server.use_dbus = False
1339
1874
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1340
service = AvahiService(name = server_settings[u"servicename"],
1341
servicetype = u"_mandos._tcp",
1875
service = AvahiService(name = server_settings["servicename"],
1876
servicetype = "_mandos._tcp",
1342
1877
protocol = protocol, bus = bus)
1343
1878
if server_settings["interface"]:
1344
1879
service.interface = (if_nametoindex
1345
(str(server_settings[u"interface"])))
1880
(str(server_settings["interface"])))
1881
1882
global multiprocessing_manager
1883
multiprocessing_manager = multiprocessing.Manager()
1346
1884
1347
1885
client_class = Client
1348
1886
if use_dbus:
1349
1887
client_class = functools.partial(ClientDBus, bus = bus)
1888
def client_config_items(config, section):
1889
special_settings = {
1890
"approved_by_default":
1891
lambda: config.getboolean(section,
1892
"approved_by_default"),
1893
}
1894
for name, value in config.items(section):
1895
try:
1896
yield (name, special_settings[name]())
1897
except KeyError:
1898
yield (name, value)
1899
1350
1900
tcp_server.clients.update(set(
1351
1901
client_class(name = section,
1352
config= dict(client_config.items(section)))
1902
config= dict(client_config_items(
1903
client_config, section)))
1353
1904
for section in client_config.sections()))
1354
1905
if not tcp_server.clients:
1355
logger.warning(u"No clients defined")
1356
1357
if debug:
1358
# Redirect stdin so all checkers get /dev/null
1359
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1360
os.dup2(null, sys.stdin.fileno())
1361
if null > 2:
1362
os.close(null)
1363
else:
1364
# No console logging
1365
logger.removeHandler(console)
1366
# Close all input and output, do double fork, etc.
1367
daemon()
1368
1369
try:
1370
with closing(pidfile):
1371
pid = os.getpid()
1372
pidfile.write(str(pid) + "\n")
1373
del pidfile
1374
except IOError:
1375
logger.error(u"Could not write to file %r with PID %d",
1376
pidfilename, pid)
1377
except NameError:
1378
# "pidfile" was never created
1379
pass
1380
del pidfilename
1381
1382
def cleanup():
1383
"Cleanup function; run on exit"
1384
service.cleanup()
1906
logger.warning("No clients defined")
1385
1907
1386
while tcp_server.clients:
1387
client = tcp_server.clients.pop()
1388
client.disable_hook = None
1389
client.disable()
1390
1391
atexit.register(cleanup)
1392
1393
1908
if not debug:
1909
try:
1910
with pidfile:
1911
pid = os.getpid()
1912
pidfile.write(str(pid) + "\n".encode("utf-8"))
1913
del pidfile
1914
except IOError:
1915
logger.error("Could not write to file %r with PID %d",
1916
pidfilename, pid)
1917
except NameError:
1918
# "pidfile" was never created
1919
pass
1920
del pidfilename
1921
1394
1922
signal.signal(signal.SIGINT, signal.SIG_IGN)
1923
1395
1924
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1396
1925
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1397
1926
1399
1928
class MandosDBusService(dbus.service.Object):
1400
1929
"""A D-Bus proxy object"""
1401
1930
def __init__(self):
1402
dbus.service.Object.__init__(self, bus, u"/")
1403
_interface = u"se.bsnet.fukt.Mandos"
1404
1405
@dbus.service.signal(_interface, signature=u"oa{sv}")
1406
def ClientAdded(self, objpath, properties):
1407
"D-Bus signal"
1408
pass
1409
1410
@dbus.service.signal(_interface, signature=u"s")
1411
def ClientNotFound(self, fingerprint):
1412
"D-Bus signal"
1413
pass
1414
1415
@dbus.service.signal(_interface, signature=u"os")
1931
dbus.service.Object.__init__(self, bus, "/")
1932
_interface = "se.bsnet.fukt.Mandos"
1933
1934
@dbus.service.signal(_interface, signature="o")
1935
def ClientAdded(self, objpath):
1936
"D-Bus signal"
1937
pass
1938
1939
@dbus.service.signal(_interface, signature="ss")
1940
def ClientNotFound(self, fingerprint, address):
1941
"D-Bus signal"
1942
pass
1943
1944
@dbus.service.signal(_interface, signature="os")
1416
1945
def ClientRemoved(self, objpath, name):
1417
1946
"D-Bus signal"
1418
1947
pass
1419
1948
1420
@dbus.service.method(_interface, out_signature=u"ao")
1949
@dbus.service.method(_interface, out_signature="ao")
1421
1950
def GetAllClients(self):
1422
1951
"D-Bus method"
1423
1952
return dbus.Array(c.dbus_object_path
1424
1953
for c in tcp_server.clients)
1425
1954
1426
1955
@dbus.service.method(_interface,
1427
out_signature=u"a{oa{sv}}")
1956
out_signature="a{oa{sv}}")
1428
1957
def GetAllClientsWithProperties(self):
1429
1958
"D-Bus method"
1430
1959
return dbus.Dictionary(
1431
((c.dbus_object_path, c.GetAllProperties())
1960
((c.dbus_object_path, c.GetAll(""))
1432
1961
for c in tcp_server.clients),
1433
signature=u"oa{sv}")
1962
signature="oa{sv}")
1434
1963
1435
@dbus.service.method(_interface, in_signature=u"o")
1964
@dbus.service.method(_interface, in_signature="o")
1436
1965
def RemoveClient(self, object_path):
1437
1966
"D-Bus method"
1438
1967
for c in tcp_server.clients:
1440
1969
tcp_server.clients.remove(c)
1441
1970
c.remove_from_connection()
1442
1971
# Don't signal anything except ClientRemoved
1443
c.disable(signal=False)
1972
c.disable(quiet=True)
1444
1973
# Emit D-Bus signal
1445
1974
self.ClientRemoved(object_path, c.name)
1446
1975
return
1447
raise KeyError
1976
raise KeyError(object_path)
1448
1977
1449
1978
del _interface
1450
1979
1451
1980
mandos_dbus_service = MandosDBusService()
1452
1981
1982
def cleanup():
1983
"Cleanup function; run on exit"
1984
service.cleanup()
1985
1986
while tcp_server.clients:
1987
client = tcp_server.clients.pop()
1988
if use_dbus:
1989
client.remove_from_connection()
1990
client.disable_hook = None
1991
# Don't signal anything except ClientRemoved
1992
client.disable(quiet=True)
1993
if use_dbus:
1994
# Emit D-Bus signal
1995
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1996
client.name)
1997
1998
atexit.register(cleanup)
1999
1453
2000
for client in tcp_server.clients:
1454
2001
if use_dbus:
1455
2002
# Emit D-Bus signal
1456
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1457
client.GetAllProperties())
2003
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1458
2004
client.enable()
1459
2005
1460
2006
tcp_server.enable()
1463
2009
# Find out what port we got
1464
2010
service.port = tcp_server.socket.getsockname()[1]
1465
2011
if use_ipv6:
1466
logger.info(u"Now listening on address %r, port %d,"
2012
logger.info("Now listening on address %r, port %d,"
1467
2013
" flowinfo %d, scope_id %d"
1468
2014
% tcp_server.socket.getsockname())
1469
2015
else: # IPv4
1470
logger.info(u"Now listening on address %r, port %d"
2016
logger.info("Now listening on address %r, port %d"
1471
2017
% tcp_server.socket.getsockname())
1472
2018
1473
2019
#service.interface = tcp_server.socket.getsockname()[3]
1477
2023
try:
1478
2024
service.activate()
1479
2025
except dbus.exceptions.DBusException, error:
1480
logger.critical(u"DBusException: %s", error)
2026
logger.critical("DBusException: %s", error)
2027
cleanup()
1481
2028
sys.exit(1)
1482
2029
# End of Avahi example code
1483
2030
1486
2033
(tcp_server.handle_request
1487
2034
(*args[2:], **kwargs) or True))
1488
2035
1489
logger.debug(u"Starting main loop")
2036
logger.debug("Starting main loop")
1490
2037
main_loop.run()
1491
2038
except AvahiError, error:
1492
logger.critical(u"AvahiError: %s", error)
2039
logger.critical("AvahiError: %s", error)
2040
cleanup()
1493
2041
sys.exit(1)
1494
2042
except KeyboardInterrupt:
1495
2043
if debug:
1496
print >> sys.stderr
1497
logger.debug(u"Server received KeyboardInterrupt")
1498
logger.debug(u"Server exiting")
2044
print("", file=sys.stderr)
2045
logger.debug("Server received KeyboardInterrupt")
2046
logger.debug("Server exiting")
2047
# Must run before the D-Bus bus name gets deregistered
2048
cleanup()
1499
2049
1500
2050
if __name__ == '__main__':
1501
2051
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0