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- Committer: Teddy Hogeborn
- Date: 2015-07-05 21:38:01 UTC
- mto: (237.7.307 trunk)
- mto: This revision was merged to the branch mainline in revision 325.
- Revision ID: teddy@recompile.se-20150705213801-pi8vk0ovlumuj826
plugin-helpers/mandos-client-iprouteadddel.c: Fix #include lines.
(main): Fix minor typo in error message.
(main): Fix minor typo in error message.
- files added:
- debian/mandos-client.examples
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
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#!/usr/bin/python2.7
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# -*- mode: python; coding: utf-8 -*-
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#
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# Mandos server - give out binary blobs to connecting clients.
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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 © 2008-2014 Teddy Hogeborn
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# Copyright © 2008-2014 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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from __future__ import (division, absolute_import, print_function,
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unicode_literals)
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from future_builtins 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 cPickle as pickle
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import multiprocessing
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import types
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import binascii
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import tempfile
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import itertools
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import collections
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import dbus
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import dbus.service
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except ImportError:
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SO_BINDTODEVICE = None
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version = "1.3.1"
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#logger = logging.getLogger('mandos')
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logger = logging.Logger('mandos')
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syslogger = (logging.handlers.SysLogHandler
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = str("/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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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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logger.addHandler(console)
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if sys.version_info.major == 2:
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str = unicode
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version = "1.6.9"
95
stored_state_file = "clients.pickle"
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logger = logging.getLogger()
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syslogger = None
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100
try:
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if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
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.if_nametoindex)
104
except (OSError, AttributeError):
105
def if_nametoindex(interface):
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"Get an interface index the hard way, i.e. using fcntl()"
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SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
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with contextlib.closing(socket.socket()) as s:
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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
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struct.pack(b"16s16x", interface))
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interface_index = struct.unpack("I", ifreq[16:20])[0]
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return interface_index
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def initlogger(debug, level=logging.WARNING):
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"""init logger and add loglevel"""
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global syslogger
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syslogger = (logging.handlers.SysLogHandler
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(facility =
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logging.handlers.SysLogHandler.LOG_DAEMON,
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address = "/dev/log"))
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syslogger.setFormatter(logging.Formatter
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('Mandos [%(process)d]: %(levelname)s:'
125
' %(message)s'))
126
logger.addHandler(syslogger)
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128
if debug:
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
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' [%(process)d]:'
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' %(levelname)s:'
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' %(message)s'))
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logger.addHandler(console)
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logger.setLevel(level)
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137
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class PGPError(Exception):
139
"""Exception if encryption/decryption fails"""
140
pass
141
142
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class PGPEngine(object):
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"""A simple class for OpenPGP symmetric encryption & decryption"""
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def __init__(self):
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self.tempdir = tempfile.mkdtemp(prefix="mandos-")
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self.gnupgargs = ['--batch',
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'--home', self.tempdir,
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'--force-mdc',
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'--quiet',
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'--no-use-agent']
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def __enter__(self):
154
return self
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def __exit__(self, exc_type, exc_value, traceback):
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self._cleanup()
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return False
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def __del__(self):
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self._cleanup()
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def _cleanup(self):
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if self.tempdir is not None:
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# Delete contents of tempdir
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for root, dirs, files in os.walk(self.tempdir,
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topdown = False):
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for filename in files:
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os.remove(os.path.join(root, filename))
170
for dirname in dirs:
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os.rmdir(os.path.join(root, dirname))
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# Remove tempdir
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os.rmdir(self.tempdir)
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self.tempdir = None
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def password_encode(self, password):
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# Passphrase can not be empty and can not contain newlines or
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# NUL bytes. So we prefix it and hex encode it.
179
encoded = b"mandos" + binascii.hexlify(password)
180
if len(encoded) > 2048:
181
# GnuPG can't handle long passwords, so encode differently
182
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
183
.replace(b"\n", b"\\n")
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.replace(b"\0", b"\\x00"))
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return encoded
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def encrypt(self, data, password):
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passphrase = self.password_encode(password)
189
with tempfile.NamedTemporaryFile(dir=self.tempdir
190
) as passfile:
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passfile.write(passphrase)
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passfile.flush()
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proc = subprocess.Popen(['gpg', '--symmetric',
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'--passphrase-file',
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passfile.name]
196
+ self.gnupgargs,
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stdin = subprocess.PIPE,
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stdout = subprocess.PIPE,
199
stderr = subprocess.PIPE)
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ciphertext, err = proc.communicate(input = data)
201
if proc.returncode != 0:
202
raise PGPError(err)
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return ciphertext
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def decrypt(self, data, password):
206
passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(dir = self.tempdir
208
) as passfile:
209
passfile.write(passphrase)
210
passfile.flush()
211
proc = subprocess.Popen(['gpg', '--decrypt',
212
'--passphrase-file',
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passfile.name]
214
+ self.gnupgargs,
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stdin = subprocess.PIPE,
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stdout = subprocess.PIPE,
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stderr = subprocess.PIPE)
218
decrypted_plaintext, err = proc.communicate(input
219
= data)
220
if proc.returncode != 0:
221
raise PGPError(err)
222
return decrypted_plaintext
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class AvahiError(Exception):
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def __init__(self, value, *args, **kwargs):
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self.value = value
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super(AvahiError, self).__init__(value, *args, **kwargs)
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def __unicode__(self):
109
return unicode(repr(self.value))
228
return super(AvahiError, self).__init__(value, *args,
229
**kwargs)
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class AvahiServiceError(AvahiError):
112
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pass
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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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See <http://www.dns-sd.org/ServiceTypes.html>
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See <https://www.iana.org/assignments/service-names-port-numbers>
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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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domain: string; Domain to publish on, default to .local if empty.
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server: D-Bus Server
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bus: dbus.SystemBus()
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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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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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def rename(self, remove=True):
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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"
160
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" after %i retries, exiting.",
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self.rename_count)
162
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raise AvahiServiceError("Too many renames")
163
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
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self.name = str(self.server
286
.GetAlternativeServiceName(self.name))
287
self.rename_count += 1
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logger.info("Changing Zeroconf service name to %r ...",
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289
self.name)
166
syslogger.setFormatter(logging.Formatter
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('Mandos (%s) [%%(process)d]:'
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' %%(levelname)s: %%(message)s'
169
% self.name))
170
self.remove()
290
if remove:
291
self.remove()
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292
try:
172
293
self.add()
173
294
except dbus.exceptions.DBusException as error:
174
logger.critical("DBusException: %s", error)
175
self.cleanup()
176
os._exit(1)
177
self.rename_count += 1
295
if (error.get_dbus_name()
296
== "org.freedesktop.Avahi.CollisionError"):
297
logger.info("Local Zeroconf service name collision.")
298
return self.rename(remove=False)
299
else:
300
logger.critical("D-Bus Exception", exc_info=error)
301
self.cleanup()
302
os._exit(1)
303
178
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def remove(self):
179
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"""Derived from the Avahi example code"""
180
306
if self.entry_group_state_changed_match is not None:
182
308
self.entry_group_state_changed_match = None
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309
if self.group is not None:
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self.group.Reset()
311
185
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def add(self):
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313
"""Derived from the Avahi example code"""
187
314
self.remove()
192
319
avahi.DBUS_INTERFACE_ENTRY_GROUP)
193
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self.entry_group_state_changed_match = (
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321
self.group.connect_to_signal(
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'StateChanged', self .entry_group_state_changed))
322
'StateChanged', self.entry_group_state_changed))
196
323
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
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324
self.name, self.type)
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325
self.group.AddService(
204
331
dbus.UInt16(self.port),
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avahi.string_array_to_txt_array(self.TXT))
206
333
self.group.Commit()
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def entry_group_state_changed(self, state, error):
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336
"""Derived from the Avahi example code"""
209
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logger.debug("Avahi entry group state change: %i", state)
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343
self.rename()
216
344
elif state == avahi.ENTRY_GROUP_FAILURE:
217
345
logger.critical("Avahi: Error in group state changed %s",
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unicode(error))
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raise AvahiGroupError("State changed: %s"
220
% unicode(error))
346
str(error))
347
raise AvahiGroupError("State changed: {!s}"
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.format(error))
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221
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def cleanup(self):
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"""Derived from the Avahi example code"""
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352
if self.group is not None:
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try:
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354
self.group.Free()
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except (dbus.exceptions.UnknownMethodException,
227
dbus.exceptions.DBusException) as e:
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dbus.exceptions.DBusException):
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357
pass
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self.group = None
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self.remove()
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def server_state_changed(self, state, error=None):
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"""Derived from the Avahi example code"""
233
363
logger.debug("Avahi server state change: %i", state)
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logger.debug("Unknown state: %r", state)
253
383
else:
254
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logger.debug("Unknown state: %r: %r", state, error)
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255
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def activate(self):
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387
"""Derived from the Avahi example code"""
257
388
if self.server is None:
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396
self.server_state_changed(self.server.GetState())
266
397
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398
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def _timedelta_to_milliseconds(td):
269
"Convert a datetime.timedelta() to milliseconds"
270
return ((td.days * 24 * 60 * 60 * 1000)
271
+ (td.seconds * 1000)
272
+ (td.microseconds // 1000))
273
399
class AvahiServiceToSyslog(AvahiService):
400
def rename(self, *args, **kwargs):
401
"""Add the new name to the syslog messages"""
402
ret = AvahiService.rename(self, *args, **kwargs)
403
syslogger.setFormatter(logging.Formatter
404
('Mandos ({}) [%(process)d]:'
405
' %(levelname)s: %(message)s'
406
.format(self.name)))
407
return ret
408
409
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class Client(object):
275
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"""A representation of a client host served by this server.
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Attributes:
278
_approved: bool(); 'None' if not yet approved/disapproved
414
approved: bool(); 'None' if not yet approved/disapproved
279
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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
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checker: subprocess.Popen(); a running checker process used
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instance %(name)s can be used in the command.
289
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checker_initiator_tag: a gobject event source tag, or None
290
426
created: datetime.datetime(); (UTC) object creation
427
client_structure: Object describing what attributes a client has
428
and is used for storing the client at exit
291
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current_checker_command: string; current running checker_command
292
disable_hook: If set, called by disable() as disable_hook(self)
293
430
disable_initiator_tag: a gobject event source tag, or None
294
431
enabled: bool()
295
432
fingerprint: string (40 or 32 hexadecimal digits); used to
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435
interval: datetime.timedelta(); How often to start a new checker
299
436
last_approval_request: datetime.datetime(); (UTC) or None
300
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last_checked_ok: datetime.datetime(); (UTC) or None
301
last_enabled: datetime.datetime(); (UTC)
438
last_checker_status: integer between 0 and 255 reflecting exit
439
status of last checker. -1 reflects crashed
440
checker, -2 means no checker completed yet.
441
last_enabled: datetime.datetime(); (UTC) or None
302
442
name: string; from the config file, used in log messages and
303
443
D-Bus identifiers
304
444
secret: bytestring; sent verbatim (over TLS) to client
305
445
timeout: datetime.timedelta(); How long from last_checked_ok
306
446
until this client is disabled
307
extended_timeout: extra long timeout when password has been sent
447
extended_timeout: extra long timeout when secret has been sent
308
448
runtime_expansions: Allowed attributes for runtime expansion.
309
449
expires: datetime.datetime(); time (UTC) when a client will be
310
450
disabled, or None
451
server_settings: The server_settings dict from main()
311
452
"""
312
453
313
454
runtime_expansions = ("approval_delay", "approval_duration",
314
"created", "enabled", "fingerprint",
315
"host", "interval", "last_checked_ok",
455
"created", "enabled", "expires",
456
"fingerprint", "host", "interval",
457
"last_approval_request", "last_checked_ok",
316
458
"last_enabled", "name", "timeout")
317
318
def timeout_milliseconds(self):
319
"Return the 'timeout' attribute in milliseconds"
320
return _timedelta_to_milliseconds(self.timeout)
321
322
def extended_timeout_milliseconds(self):
323
"Return the 'extended_timeout' attribute in milliseconds"
324
return _timedelta_to_milliseconds(self.extended_timeout)
325
326
def interval_milliseconds(self):
327
"Return the 'interval' attribute in milliseconds"
328
return _timedelta_to_milliseconds(self.interval)
329
330
def approval_delay_milliseconds(self):
331
return _timedelta_to_milliseconds(self.approval_delay)
332
333
def __init__(self, name = None, disable_hook=None, config=None):
334
"""Note: the 'checker' key in 'config' sets the
335
'checker_command' attribute and *not* the 'checker'
336
attribute."""
459
client_defaults = { "timeout": "PT5M",
460
"extended_timeout": "PT15M",
461
"interval": "PT2M",
462
"checker": "fping -q -- %%(host)s",
463
"host": "",
464
"approval_delay": "PT0S",
465
"approval_duration": "PT1S",
466
"approved_by_default": "True",
467
"enabled": "True",
468
}
469
470
@staticmethod
471
def config_parser(config):
472
"""Construct a new dict of client settings of this form:
473
{ client_name: {setting_name: value, ...}, ...}
474
with exceptions for any special settings as defined above.
475
NOTE: Must be a pure function. Must return the same result
476
value given the same arguments.
477
"""
478
settings = {}
479
for client_name in config.sections():
480
section = dict(config.items(client_name))
481
client = settings[client_name] = {}
482
483
client["host"] = section["host"]
484
# Reformat values from string types to Python types
485
client["approved_by_default"] = config.getboolean(
486
client_name, "approved_by_default")
487
client["enabled"] = config.getboolean(client_name,
488
"enabled")
489
490
client["fingerprint"] = (section["fingerprint"].upper()
491
.replace(" ", ""))
492
if "secret" in section:
493
client["secret"] = section["secret"].decode("base64")
494
elif "secfile" in section:
495
with open(os.path.expanduser(os.path.expandvars
496
(section["secfile"])),
497
"rb") as secfile:
498
client["secret"] = secfile.read()
499
else:
500
raise TypeError("No secret or secfile for section {}"
501
.format(section))
502
client["timeout"] = string_to_delta(section["timeout"])
503
client["extended_timeout"] = string_to_delta(
504
section["extended_timeout"])
505
client["interval"] = string_to_delta(section["interval"])
506
client["approval_delay"] = string_to_delta(
507
section["approval_delay"])
508
client["approval_duration"] = string_to_delta(
509
section["approval_duration"])
510
client["checker_command"] = section["checker"]
511
client["last_approval_request"] = None
512
client["last_checked_ok"] = None
513
client["last_checker_status"] = -2
514
515
return settings
516
517
def __init__(self, settings, name = None, server_settings=None):
337
518
self.name = name
338
if config is None:
339
config = {}
519
if server_settings is None:
520
server_settings = {}
521
self.server_settings = server_settings
522
# adding all client settings
523
for setting, value in settings.items():
524
setattr(self, setting, value)
525
526
if self.enabled:
527
if not hasattr(self, "last_enabled"):
528
self.last_enabled = datetime.datetime.utcnow()
529
if not hasattr(self, "expires"):
530
self.expires = (datetime.datetime.utcnow()
531
+ self.timeout)
532
else:
533
self.last_enabled = None
534
self.expires = None
535
340
536
logger.debug("Creating client %r", self.name)
341
537
# Uppercase and remove spaces from fingerprint for later
342
538
# comparison purposes with return value from the fingerprint()
343
539
# function
344
self.fingerprint = (config["fingerprint"].upper()
345
.replace(" ", ""))
346
540
logger.debug(" Fingerprint: %s", self.fingerprint)
347
if "secret" in config:
348
self.secret = config["secret"].decode("base64")
349
elif "secfile" in config:
350
with open(os.path.expanduser(os.path.expandvars
351
(config["secfile"])),
352
"rb") as secfile:
353
self.secret = secfile.read()
354
else:
355
raise TypeError("No secret or secfile for client %s"
356
% self.name)
357
self.host = config.get("host", "")
358
self.created = datetime.datetime.utcnow()
359
self.enabled = False
360
self.last_approval_request = None
361
self.last_enabled = None
362
self.last_checked_ok = None
363
self.timeout = string_to_delta(config["timeout"])
364
self.extended_timeout = string_to_delta(config["extended_timeout"])
365
self.interval = string_to_delta(config["interval"])
366
self.disable_hook = disable_hook
541
self.created = settings.get("created",
542
datetime.datetime.utcnow())
543
544
# attributes specific for this server instance
367
545
self.checker = None
368
546
self.checker_initiator_tag = None
369
547
self.disable_initiator_tag = None
370
self.expires = None
371
548
self.checker_callback_tag = None
372
self.checker_command = config["checker"]
373
549
self.current_checker_command = None
374
self.last_connect = None
375
self._approved = None
376
self.approved_by_default = config.get("approved_by_default",
377
True)
550
self.approved = None
378
551
self.approvals_pending = 0
379
self.approval_delay = string_to_delta(
380
config["approval_delay"])
381
self.approval_duration = string_to_delta(
382
config["approval_duration"])
383
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
552
self.changedstate = (multiprocessing_manager
553
.Condition(multiprocessing_manager
554
.Lock()))
555
self.client_structure = [attr for attr in
556
self.__dict__.iterkeys()
557
if not attr.startswith("_")]
558
self.client_structure.append("client_structure")
559
560
for name, t in inspect.getmembers(type(self),
561
lambda obj:
562
isinstance(obj,
563
property)):
564
if not name.startswith("_"):
565
self.client_structure.append(name)
384
566
567
# Send notice to process children that client state has changed
385
568
def send_changedstate(self):
386
self.changedstate.acquire()
387
self.changedstate.notify_all()
388
self.changedstate.release()
389
569
with self.changedstate:
570
self.changedstate.notify_all()
571
390
572
def enable(self):
391
573
"""Start this client's checker and timeout hooks"""
392
574
if getattr(self, "enabled", False):
393
575
# Already enabled
394
576
return
395
self.send_changedstate()
396
# Schedule a new checker to be started an 'interval' from now,
397
# and every interval from then on.
398
self.checker_initiator_tag = (gobject.timeout_add
399
(self.interval_milliseconds(),
400
self.start_checker))
401
# Schedule a disable() when 'timeout' has passed
402
577
self.expires = datetime.datetime.utcnow() + self.timeout
403
self.disable_initiator_tag = (gobject.timeout_add
404
(self.timeout_milliseconds(),
405
self.disable))
406
578
self.enabled = True
407
579
self.last_enabled = datetime.datetime.utcnow()
408
# Also start a new checker *right now*.
409
self.start_checker()
580
self.init_checker()
581
self.send_changedstate()
410
582
411
583
def disable(self, quiet=True):
412
584
"""Disable this client."""
413
585
if not getattr(self, "enabled", False):
414
586
return False
415
587
if not quiet:
416
self.send_changedstate()
417
if not quiet:
418
588
logger.info("Disabling client %s", self.name)
419
if getattr(self, "disable_initiator_tag", False):
589
if getattr(self, "disable_initiator_tag", None) is not None:
420
590
gobject.source_remove(self.disable_initiator_tag)
421
591
self.disable_initiator_tag = None
422
592
self.expires = None
423
if getattr(self, "checker_initiator_tag", False):
593
if getattr(self, "checker_initiator_tag", None) is not None:
424
594
gobject.source_remove(self.checker_initiator_tag)
425
595
self.checker_initiator_tag = None
426
596
self.stop_checker()
427
if self.disable_hook:
428
self.disable_hook(self)
429
597
self.enabled = False
598
if not quiet:
599
self.send_changedstate()
430
600
# Do not run this again if called by a gobject.timeout_add
431
601
return False
432
602
433
603
def __del__(self):
434
self.disable_hook = None
435
604
self.disable()
436
605
606
def init_checker(self):
607
# Schedule a new checker to be started an 'interval' from now,
608
# and every interval from then on.
609
if self.checker_initiator_tag is not None:
610
gobject.source_remove(self.checker_initiator_tag)
611
self.checker_initiator_tag = (gobject.timeout_add
612
(int(self.interval
613
.total_seconds() * 1000),
614
self.start_checker))
615
# Schedule a disable() when 'timeout' has passed
616
if self.disable_initiator_tag is not None:
617
gobject.source_remove(self.disable_initiator_tag)
618
self.disable_initiator_tag = (gobject.timeout_add
619
(int(self.timeout
620
.total_seconds() * 1000),
621
self.disable))
622
# Also start a new checker *right now*.
623
self.start_checker()
624
437
625
def checker_callback(self, pid, condition, command):
438
626
"""The checker has completed, so take appropriate actions."""
439
627
self.checker_callback_tag = None
440
628
self.checker = None
441
629
if os.WIFEXITED(condition):
442
exitstatus = os.WEXITSTATUS(condition)
443
if exitstatus == 0:
630
self.last_checker_status = os.WEXITSTATUS(condition)
631
if self.last_checker_status == 0:
444
632
logger.info("Checker for %(name)s succeeded",
445
633
vars(self))
446
634
self.checked_ok()
448
636
logger.info("Checker for %(name)s failed",
449
637
vars(self))
450
638
else:
639
self.last_checker_status = -1
451
640
logger.warning("Checker for %(name)s crashed?",
452
641
vars(self))
453
642
454
def checked_ok(self, timeout=None):
455
"""Bump up the timeout for this client.
456
457
This should only be called when the client has been seen,
458
alive and well.
459
"""
643
def checked_ok(self):
644
"""Assert that the client has been seen, alive and well."""
645
self.last_checked_ok = datetime.datetime.utcnow()
646
self.last_checker_status = 0
647
self.bump_timeout()
648
649
def bump_timeout(self, timeout=None):
650
"""Bump up the timeout for this client."""
460
651
if timeout is None:
461
652
timeout = self.timeout
462
self.last_checked_ok = datetime.datetime.utcnow()
463
gobject.source_remove(self.disable_initiator_tag)
464
self.expires = datetime.datetime.utcnow() + timeout
465
self.disable_initiator_tag = (gobject.timeout_add
466
(_timedelta_to_milliseconds(timeout),
467
self.disable))
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = None
656
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(int(timeout.total_seconds()
659
* 1000), self.disable))
660
self.expires = datetime.datetime.utcnow() + timeout
468
661
469
662
def need_approval(self):
470
663
self.last_approval_request = datetime.datetime.utcnow()
475
668
If a checker already exists, leave it running and do
476
669
nothing."""
477
670
# The reason for not killing a running checker is that if we
478
# did that, then if a checker (for some reason) started
479
# running slowly and taking more than 'interval' time, the
480
# client would inevitably timeout, since no checker would get
481
# a chance to run to completion. If we instead leave running
671
# did that, and if a checker (for some reason) started running
672
# slowly and taking more than 'interval' time, then the client
673
# would inevitably timeout, since no checker would get a
674
# chance to run to completion. If we instead leave running
482
675
# checkers alone, the checker would have to take more time
483
676
# than 'timeout' for the client to be disabled, which is as it
484
677
# should be.
486
679
# If a checker exists, make sure it is not a zombie
487
680
try:
488
681
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
489
except (AttributeError, OSError) as error:
490
if (isinstance(error, OSError)
491
and error.errno != errno.ECHILD):
492
raise error
682
except AttributeError:
683
pass
684
except OSError as error:
685
if error.errno != errno.ECHILD:
686
raise
493
687
else:
494
688
if pid:
495
689
logger.warning("Checker was a zombie")
498
692
self.current_checker_command)
499
693
# Start a new checker if needed
500
694
if self.checker is None:
695
# Escape attributes for the shell
696
escaped_attrs = { attr:
697
re.escape(str(getattr(self, attr)))
698
for attr in self.runtime_expansions }
501
699
try:
502
# In case checker_command has exactly one % operator
503
command = self.checker_command % self.host
504
except TypeError:
505
# Escape attributes for the shell
506
escaped_attrs = dict(
507
(attr,
508
re.escape(unicode(str(getattr(self, attr, "")),
509
errors=
510
'replace')))
511
for attr in
512
self.runtime_expansions)
513
514
try:
515
command = self.checker_command % escaped_attrs
516
except TypeError as error:
517
logger.error('Could not format string "%s":'
518
' %s', self.checker_command, error)
519
return True # Try again later
700
command = self.checker_command % escaped_attrs
701
except TypeError as error:
702
logger.error('Could not format string "%s"',
703
self.checker_command, exc_info=error)
704
return True # Try again later
520
705
self.current_checker_command = command
521
706
try:
522
707
logger.info("Starting checker %r for %s",
525
710
# in normal mode, that is already done by daemon(),
526
711
# and in debug mode we don't want to. (Stdin is
527
712
# always replaced by /dev/null.)
713
# The exception is when not debugging but nevertheless
714
# running in the foreground; use the previously
715
# created wnull.
716
popen_args = {}
717
if (not self.server_settings["debug"]
718
and self.server_settings["foreground"]):
719
popen_args.update({"stdout": wnull,
720
"stderr": wnull })
528
721
self.checker = subprocess.Popen(command,
529
722
close_fds=True,
530
shell=True, cwd="/")
531
self.checker_callback_tag = (gobject.child_watch_add
532
(self.checker.pid,
533
self.checker_callback,
534
data=command))
535
# The checker may have completed before the gobject
536
# watch was added. Check for this.
723
shell=True, cwd="/",
724
**popen_args)
725
except OSError as error:
726
logger.error("Failed to start subprocess",
727
exc_info=error)
728
return True
729
self.checker_callback_tag = (gobject.child_watch_add
730
(self.checker.pid,
731
self.checker_callback,
732
data=command))
733
# The checker may have completed before the gobject
734
# watch was added. Check for this.
735
try:
537
736
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
538
if pid:
539
gobject.source_remove(self.checker_callback_tag)
540
self.checker_callback(pid, status, command)
541
737
except OSError as error:
542
logger.error("Failed to start subprocess: %s",
543
error)
738
if error.errno == errno.ECHILD:
739
# This should never happen
740
logger.error("Child process vanished",
741
exc_info=error)
742
return True
743
raise
744
if pid:
745
gobject.source_remove(self.checker_callback_tag)
746
self.checker_callback(pid, status, command)
544
747
# Re-run this periodically if run by gobject.timeout_add
545
748
return True
546
749
553
756
return
554
757
logger.debug("Stopping checker for %(name)s", vars(self))
555
758
try:
556
os.kill(self.checker.pid, signal.SIGTERM)
759
self.checker.terminate()
557
760
#time.sleep(0.5)
558
761
#if self.checker.poll() is None:
559
# os.kill(self.checker.pid, signal.SIGKILL)
762
# self.checker.kill()
560
763
except OSError as error:
561
764
if error.errno != errno.ESRCH: # No such process
562
765
raise
579
782
# "Set" method, so we fail early here:
580
783
if byte_arrays and signature != "ay":
581
784
raise ValueError("Byte arrays not supported for non-'ay'"
582
" signature %r" % signature)
785
" signature {!r}".format(signature))
583
786
def decorator(func):
584
787
func._dbus_is_property = True
585
788
func._dbus_interface = dbus_interface
593
796
return decorator
594
797
595
798
799
def dbus_interface_annotations(dbus_interface):
800
"""Decorator for marking functions returning interface annotations
801
802
Usage:
803
804
@dbus_interface_annotations("org.example.Interface")
805
def _foo(self): # Function name does not matter
806
return {"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property.EmitsChangedSignal":
808
"false"}
809
"""
810
def decorator(func):
811
func._dbus_is_interface = True
812
func._dbus_interface = dbus_interface
813
func._dbus_name = dbus_interface
814
return func
815
return decorator
816
817
818
def dbus_annotations(annotations):
819
"""Decorator to annotate D-Bus methods, signals or properties
820
Usage:
821
822
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
823
"org.freedesktop.DBus.Property."
824
"EmitsChangedSignal": "false"})
825
@dbus_service_property("org.example.Interface", signature="b",
826
access="r")
827
def Property_dbus_property(self):
828
return dbus.Boolean(False)
829
"""
830
def decorator(func):
831
func._dbus_annotations = annotations
832
return func
833
return decorator
834
835
596
836
class DBusPropertyException(dbus.exceptions.DBusException):
597
837
"""A base class for D-Bus property-related exceptions
598
838
"""
599
def __unicode__(self):
600
return unicode(str(self))
601
839
pass
602
840
603
841
class DBusPropertyAccessException(DBusPropertyException):
604
842
"""A property's access permissions disallows an operation.
621
859
"""
622
860
623
861
@staticmethod
624
def _is_dbus_property(obj):
625
return getattr(obj, "_dbus_is_property", False)
862
def _is_dbus_thing(thing):
863
"""Returns a function testing if an attribute is a D-Bus thing
864
865
If called like _is_dbus_thing("method") it returns a function
866
suitable for use as predicate to inspect.getmembers().
867
"""
868
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
869
False)
626
870
627
def _get_all_dbus_properties(self):
871
def _get_all_dbus_things(self, thing):
628
872
"""Returns a generator of (name, attribute) pairs
629
873
"""
630
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
874
return ((getattr(athing.__get__(self), "_dbus_name",
875
name),
876
athing.__get__(self))
631
877
for cls in self.__class__.__mro__
632
for name, prop in inspect.getmembers(cls, self._is_dbus_property))
878
for name, athing in
879
inspect.getmembers(cls,
880
self._is_dbus_thing(thing)))
633
881
634
882
def _get_dbus_property(self, interface_name, property_name):
635
883
"""Returns a bound method if one exists which is a D-Bus
636
884
property with the specified name and interface.
637
885
"""
638
886
for cls in self.__class__.__mro__:
639
for name, value in inspect.getmembers(cls, self._is_dbus_property):
640
if value._dbus_name == property_name and value._dbus_interface == interface_name:
887
for name, value in (inspect.getmembers
888
(cls,
889
self._is_dbus_thing("property"))):
890
if (value._dbus_name == property_name
891
and value._dbus_interface == interface_name):
641
892
return value.__get__(self)
642
893
643
894
# No such property
669
920
# The byte_arrays option is not supported yet on
670
921
# signatures other than "ay".
671
922
if prop._dbus_signature != "ay":
672
raise ValueError
673
value = dbus.ByteArray(''.join(unichr(byte)
674
for byte in value))
923
raise ValueError("Byte arrays not supported for non-"
924
"'ay' signature {!r}"
925
.format(prop._dbus_signature))
926
value = dbus.ByteArray(b''.join(chr(byte)
927
for byte in value))
675
928
prop(value)
676
929
677
930
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
682
935
683
936
Note: Will not include properties with access="write".
684
937
"""
685
all = {}
686
for name, prop in self._get_all_dbus_properties():
938
properties = {}
939
for name, prop in self._get_all_dbus_things("property"):
687
940
if (interface_name
688
941
and interface_name != prop._dbus_interface):
689
942
# Interface non-empty but did not match
693
946
continue
694
947
value = prop()
695
948
if not hasattr(value, "variant_level"):
696
all[name] = value
949
properties[name] = value
697
950
continue
698
all[name] = type(value)(value, variant_level=
699
value.variant_level+1)
700
return dbus.Dictionary(all, signature="sv")
951
properties[name] = type(value)(value, variant_level=
952
value.variant_level+1)
953
return dbus.Dictionary(properties, signature="sv")
954
955
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
956
def PropertiesChanged(self, interface_name, changed_properties,
957
invalidated_properties):
958
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
959
standard.
960
"""
961
pass
701
962
702
963
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
703
964
out_signature="s",
704
965
path_keyword='object_path',
705
966
connection_keyword='connection')
706
967
def Introspect(self, object_path, connection):
707
"""Standard D-Bus method, overloaded to insert property tags.
968
"""Overloading of standard D-Bus method.
969
970
Inserts property tags and interface annotation tags.
708
971
"""
709
972
xmlstring = dbus.service.Object.Introspect(self, object_path,
710
973
connection)
717
980
e.setAttribute("access", prop._dbus_access)
718
981
return e
719
982
for if_tag in document.getElementsByTagName("interface"):
983
# Add property tags
720
984
for tag in (make_tag(document, name, prop)
721
985
for name, prop
722
in self._get_all_dbus_properties()
986
in self._get_all_dbus_things("property")
723
987
if prop._dbus_interface
724
988
== if_tag.getAttribute("name")):
725
989
if_tag.appendChild(tag)
990
# Add annotation tags
991
for typ in ("method", "signal", "property"):
992
for tag in if_tag.getElementsByTagName(typ):
993
annots = dict()
994
for name, prop in (self.
995
_get_all_dbus_things(typ)):
996
if (name == tag.getAttribute("name")
997
and prop._dbus_interface
998
== if_tag.getAttribute("name")):
999
annots.update(getattr
1000
(prop,
1001
"_dbus_annotations",
1002
{}))
1003
for name, value in annots.items():
1004
ann_tag = document.createElement(
1005
"annotation")
1006
ann_tag.setAttribute("name", name)
1007
ann_tag.setAttribute("value", value)
1008
tag.appendChild(ann_tag)
1009
# Add interface annotation tags
1010
for annotation, value in dict(
1011
itertools.chain.from_iterable(
1012
annotations().items()
1013
for name, annotations in
1014
self._get_all_dbus_things("interface")
1015
if name == if_tag.getAttribute("name")
1016
)).items():
1017
ann_tag = document.createElement("annotation")
1018
ann_tag.setAttribute("name", annotation)
1019
ann_tag.setAttribute("value", value)
1020
if_tag.appendChild(ann_tag)
726
1021
# Add the names to the return values for the
727
1022
# "org.freedesktop.DBus.Properties" methods
728
1023
if (if_tag.getAttribute("name")
743
1038
except (AttributeError, xml.dom.DOMException,
744
1039
xml.parsers.expat.ExpatError) as error:
745
1040
logger.error("Failed to override Introspection method",
746
error)
1041
exc_info=error)
747
1042
return xmlstring
748
1043
749
1044
750
def datetime_to_dbus (dt, variant_level=0):
1045
def datetime_to_dbus(dt, variant_level=0):
751
1046
"""Convert a UTC datetime.datetime() to a D-Bus type."""
752
1047
if dt is None:
753
1048
return dbus.String("", variant_level = variant_level)
754
1049
return dbus.String(dt.isoformat(),
755
1050
variant_level=variant_level)
756
1051
757
class AlternateDBusNamesMetaclass(DBusObjectWithProperties.__metaclass__):
758
"""Applied to an empty subclass of a D-Bus object, this metaclass
759
will add additional D-Bus attributes matching a certain pattern.
1052
1053
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1054
"""A class decorator; applied to a subclass of
1055
dbus.service.Object, it will add alternate D-Bus attributes with
1056
interface names according to the "alt_interface_names" mapping.
1057
Usage:
1058
1059
@alternate_dbus_interfaces({"org.example.Interface":
1060
"net.example.AlternateInterface"})
1061
class SampleDBusObject(dbus.service.Object):
1062
@dbus.service.method("org.example.Interface")
1063
def SampleDBusMethod():
1064
pass
1065
1066
The above "SampleDBusMethod" on "SampleDBusObject" will be
1067
reachable via two interfaces: "org.example.Interface" and
1068
"net.example.AlternateInterface", the latter of which will have
1069
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1070
"true", unless "deprecate" is passed with a False value.
1071
1072
This works for methods and signals, and also for D-Bus properties
1073
(from DBusObjectWithProperties) and interfaces (from the
1074
dbus_interface_annotations decorator).
760
1075
"""
761
def __new__(mcs, name, bases, attr):
762
# Go through all the base classes which could have D-Bus
763
# methods, signals, or properties in them
764
for base in (b for b in bases
765
if issubclass(b, dbus.service.Object)):
766
# Go though all attributes of the base class
767
for attrname, attribute in inspect.getmembers(base):
1076
def wrapper(cls):
1077
for orig_interface_name, alt_interface_name in (
1078
alt_interface_names.items()):
1079
attr = {}
1080
interface_names = set()
1081
# Go though all attributes of the class
1082
for attrname, attribute in inspect.getmembers(cls):
768
1083
# Ignore non-D-Bus attributes, and D-Bus attributes
769
1084
# with the wrong interface name
770
1085
if (not hasattr(attribute, "_dbus_interface")
771
1086
or not attribute._dbus_interface
772
.startswith("se.recompile.Mandos")):
1087
.startswith(orig_interface_name)):
773
1088
continue
774
1089
# Create an alternate D-Bus interface name based on
775
1090
# the current name
776
1091
alt_interface = (attribute._dbus_interface
777
.replace("se.recompile.Mandos",
778
"se.bsnet.fukt.Mandos"))
1092
.replace(orig_interface_name,
1093
alt_interface_name))
1094
interface_names.add(alt_interface)
779
1095
# Is this a D-Bus signal?
780
1096
if getattr(attribute, "_dbus_is_signal", False):
781
# Extract the original non-method function by
782
# black magic
1097
# Extract the original non-method undecorated
1098
# function by black magic
783
1099
nonmethod_func = (dict(
784
1100
zip(attribute.func_code.co_freevars,
785
1101
attribute.__closure__))["func"]
796
1112
nonmethod_func.func_name,
797
1113
nonmethod_func.func_defaults,
798
1114
nonmethod_func.func_closure)))
1115
# Copy annotations, if any
1116
try:
1117
new_function._dbus_annotations = (
1118
dict(attribute._dbus_annotations))
1119
except AttributeError:
1120
pass
799
1121
# Define a creator of a function to call both the
800
# old and new functions, so both the old and new
801
# signals gets sent when the function is called
1122
# original and alternate functions, so both the
1123
# original and alternate signals gets sent when
1124
# the function is called
802
1125
def fixscope(func1, func2):
803
1126
"""This function is a scope container to pass
804
1127
func1 and func2 to the "call_both" function
811
1134
return call_both
812
1135
# Create the "call_both" function and add it to
813
1136
# the class
814
attr[attrname] = fixscope(attribute,
815
new_function)
1137
attr[attrname] = fixscope(attribute, new_function)
816
1138
# Is this a D-Bus method?
817
1139
elif getattr(attribute, "_dbus_is_method", False):
818
1140
# Create a new, but exactly alike, function
829
1151
attribute.func_name,
830
1152
attribute.func_defaults,
831
1153
attribute.func_closure)))
1154
# Copy annotations, if any
1155
try:
1156
attr[attrname]._dbus_annotations = (
1157
dict(attribute._dbus_annotations))
1158
except AttributeError:
1159
pass
832
1160
# Is this a D-Bus property?
833
1161
elif getattr(attribute, "_dbus_is_property", False):
834
1162
# Create a new, but exactly alike, function
848
1176
attribute.func_name,
849
1177
attribute.func_defaults,
850
1178
attribute.func_closure)))
851
return type.__new__(mcs, name, bases, attr)
852
1179
# Copy annotations, if any
1180
try:
1181
attr[attrname]._dbus_annotations = (
1182
dict(attribute._dbus_annotations))
1183
except AttributeError:
1184
pass
1185
# Is this a D-Bus interface?
1186
elif getattr(attribute, "_dbus_is_interface", False):
1187
# Create a new, but exactly alike, function
1188
# object. Decorate it to be a new D-Bus interface
1189
# with the alternate D-Bus interface name. Add it
1190
# to the class.
1191
attr[attrname] = (dbus_interface_annotations
1192
(alt_interface)
1193
(types.FunctionType
1194
(attribute.func_code,
1195
attribute.func_globals,
1196
attribute.func_name,
1197
attribute.func_defaults,
1198
attribute.func_closure)))
1199
if deprecate:
1200
# Deprecate all alternate interfaces
1201
iname="_AlternateDBusNames_interface_annotation{}"
1202
for interface_name in interface_names:
1203
@dbus_interface_annotations(interface_name)
1204
def func(self):
1205
return { "org.freedesktop.DBus.Deprecated":
1206
"true" }
1207
# Find an unused name
1208
for aname in (iname.format(i)
1209
for i in itertools.count()):
1210
if aname not in attr:
1211
attr[aname] = func
1212
break
1213
if interface_names:
1214
# Replace the class with a new subclass of it with
1215
# methods, signals, etc. as created above.
1216
cls = type(b"{}Alternate".format(cls.__name__),
1217
(cls,), attr)
1218
return cls
1219
return wrapper
1220
1221
1222
@alternate_dbus_interfaces({"se.recompile.Mandos":
1223
"se.bsnet.fukt.Mandos"})
853
1224
class ClientDBus(Client, DBusObjectWithProperties):
854
1225
"""A Client class using D-Bus
855
1226
861
1232
runtime_expansions = (Client.runtime_expansions
862
1233
+ ("dbus_object_path",))
863
1234
1235
_interface = "se.recompile.Mandos.Client"
1236
864
1237
# dbus.service.Object doesn't use super(), so we can't either.
865
1238
866
1239
def __init__(self, bus = None, *args, **kwargs):
867
self._approvals_pending = 0
868
1240
self.bus = bus
869
1241
Client.__init__(self, *args, **kwargs)
870
1242
# Only now, when this client is initialized, can it show up on
871
1243
# the D-Bus
872
client_object_name = unicode(self.name).translate(
1244
client_object_name = str(self.name).translate(
873
1245
{ord("."): ord("_"),
874
1246
ord("-"): ord("_")})
875
1247
self.dbus_object_path = (dbus.ObjectPath
876
1248
("/clients/" + client_object_name))
877
1249
DBusObjectWithProperties.__init__(self, self.bus,
878
1250
self.dbus_object_path)
879
1251
880
1252
def notifychangeproperty(transform_func,
881
1253
dbus_name, type_func=lambda x: x,
882
variant_level=1):
1254
variant_level=1, invalidate_only=False,
1255
_interface=_interface):
883
1256
""" Modify a variable so that it's a property which announces
884
1257
its changes to DBus.
885
886
transform_fun: Function that takes a value and transforms it
887
to a D-Bus type.
1258
1259
transform_fun: Function that takes a value and a variant_level
1260
and transforms it to a D-Bus type.
888
1261
dbus_name: D-Bus name of the variable
889
1262
type_func: Function that transform the value before sending it
890
1263
to the D-Bus. Default: no transform
891
1264
variant_level: D-Bus variant level. Default: 1
892
1265
"""
893
real_value = [None,]
1266
attrname = "_{}".format(dbus_name)
894
1267
def setter(self, value):
895
old_value = real_value[0]
896
real_value[0] = value
897
1268
if hasattr(self, "dbus_object_path"):
898
if type_func(old_value) != type_func(real_value[0]):
899
dbus_value = transform_func(type_func(real_value[0]),
900
variant_level)
901
self.PropertyChanged(dbus.String(dbus_name),
902
dbus_value)
1269
if (not hasattr(self, attrname) or
1270
type_func(getattr(self, attrname, None))
1271
!= type_func(value)):
1272
if invalidate_only:
1273
self.PropertiesChanged(_interface,
1274
dbus.Dictionary(),
1275
dbus.Array
1276
((dbus_name,)))
1277
else:
1278
dbus_value = transform_func(type_func(value),
1279
variant_level
1280
=variant_level)
1281
self.PropertyChanged(dbus.String(dbus_name),
1282
dbus_value)
1283
self.PropertiesChanged(_interface,
1284
dbus.Dictionary({
1285
dbus.String(dbus_name):
1286
dbus_value }), dbus.Array())
1287
setattr(self, attrname, value)
903
1288
904
return property(lambda self: real_value[0], setter)
905
1289
return property(lambda self: getattr(self, attrname), setter)
906
1290
907
1291
expires = notifychangeproperty(datetime_to_dbus, "Expires")
908
1292
approvals_pending = notifychangeproperty(dbus.Boolean,
912
1296
last_enabled = notifychangeproperty(datetime_to_dbus,
913
1297
"LastEnabled")
914
1298
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
915
type_func = lambda checker: checker is not None)
1299
type_func = lambda checker:
1300
checker is not None)
916
1301
last_checked_ok = notifychangeproperty(datetime_to_dbus,
917
1302
"LastCheckedOK")
918
last_approval_request = notifychangeproperty(datetime_to_dbus,
919
"LastApprovalRequest")
1303
last_checker_status = notifychangeproperty(dbus.Int16,
1304
"LastCheckerStatus")
1305
last_approval_request = notifychangeproperty(
1306
datetime_to_dbus, "LastApprovalRequest")
920
1307
approved_by_default = notifychangeproperty(dbus.Boolean,
921
1308
"ApprovedByDefault")
922
approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
923
type_func = _timedelta_to_milliseconds)
924
approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
925
type_func = _timedelta_to_milliseconds)
1309
approval_delay = notifychangeproperty(dbus.UInt64,
1310
"ApprovalDelay",
1311
type_func =
1312
lambda td: td.total_seconds()
1313
* 1000)
1314
approval_duration = notifychangeproperty(
1315
dbus.UInt64, "ApprovalDuration",
1316
type_func = lambda td: td.total_seconds() * 1000)
926
1317
host = notifychangeproperty(dbus.String, "Host")
927
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
928
type_func = _timedelta_to_milliseconds)
929
extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
930
type_func = _timedelta_to_milliseconds)
931
interval = notifychangeproperty(dbus.UInt16, "Interval",
932
type_func = _timedelta_to_milliseconds)
1318
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1319
type_func = lambda td:
1320
td.total_seconds() * 1000)
1321
extended_timeout = notifychangeproperty(
1322
dbus.UInt64, "ExtendedTimeout",
1323
type_func = lambda td: td.total_seconds() * 1000)
1324
interval = notifychangeproperty(dbus.UInt64,
1325
"Interval",
1326
type_func =
1327
lambda td: td.total_seconds()
1328
* 1000)
933
1329
checker_command = notifychangeproperty(dbus.String, "Checker")
1330
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1331
invalidate_only=True)
934
1332
935
1333
del notifychangeproperty
936
1334
963
1361
*args, **kwargs)
964
1362
965
1363
def start_checker(self, *args, **kwargs):
966
old_checker = self.checker
967
if self.checker is not None:
968
old_checker_pid = self.checker.pid
969
else:
970
old_checker_pid = None
1364
old_checker_pid = getattr(self.checker, "pid", None)
971
1365
r = Client.start_checker(self, *args, **kwargs)
972
1366
# Only if new checker process was started
973
1367
if (self.checker is not None
977
1371
return r
978
1372
979
1373
def _reset_approved(self):
980
self._approved = None
1374
self.approved = None
981
1375
return False
982
1376
983
1377
def approve(self, value=True):
1378
self.approved = value
1379
gobject.timeout_add(int(self.approval_duration.total_seconds()
1380
* 1000), self._reset_approved)
984
1381
self.send_changedstate()
985
self._approved = value
986
gobject.timeout_add(_timedelta_to_milliseconds
987
(self.approval_duration),
988
self._reset_approved)
989
990
1382
991
1383
## D-Bus methods, signals & properties
992
_interface = "se.recompile.Mandos.Client"
1384
1385
## Interfaces
993
1386
994
1387
## Signals
995
1388
1006
1399
pass
1007
1400
1008
1401
# PropertyChanged - signal
1402
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1009
1403
@dbus.service.signal(_interface, signature="sv")
1010
1404
def PropertyChanged(self, property, value):
1011
1405
"D-Bus signal"
1087
1481
access="readwrite")
1088
1482
def ApprovalDelay_dbus_property(self, value=None):
1089
1483
if value is None: # get
1090
return dbus.UInt64(self.approval_delay_milliseconds())
1484
return dbus.UInt64(self.approval_delay.total_seconds()
1485
* 1000)
1091
1486
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1092
1487
1093
1488
# ApprovalDuration - property
1095
1490
access="readwrite")
1096
1491
def ApprovalDuration_dbus_property(self, value=None):
1097
1492
if value is None: # get
1098
return dbus.UInt64(_timedelta_to_milliseconds(
1099
self.approval_duration))
1493
return dbus.UInt64(self.approval_duration.total_seconds()
1494
* 1000)
1100
1495
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1101
1496
1102
1497
# Name - property
1115
1510
def Host_dbus_property(self, value=None):
1116
1511
if value is None: # get
1117
1512
return dbus.String(self.host)
1118
self.host = value
1513
self.host = str(value)
1119
1514
1120
1515
# Created - property
1121
1516
@dbus_service_property(_interface, signature="s", access="read")
1122
1517
def Created_dbus_property(self):
1123
return dbus.String(datetime_to_dbus(self.created))
1518
return datetime_to_dbus(self.created)
1124
1519
1125
1520
# LastEnabled - property
1126
1521
@dbus_service_property(_interface, signature="s", access="read")
1147
1542
return
1148
1543
return datetime_to_dbus(self.last_checked_ok)
1149
1544
1545
# LastCheckerStatus - property
1546
@dbus_service_property(_interface, signature="n",
1547
access="read")
1548
def LastCheckerStatus_dbus_property(self):
1549
return dbus.Int16(self.last_checker_status)
1550
1150
1551
# Expires - property
1151
1552
@dbus_service_property(_interface, signature="s", access="read")
1152
1553
def Expires_dbus_property(self):
1162
1563
access="readwrite")
1163
1564
def Timeout_dbus_property(self, value=None):
1164
1565
if value is None: # get
1165
return dbus.UInt64(self.timeout_milliseconds())
1566
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1567
old_timeout = self.timeout
1166
1568
self.timeout = datetime.timedelta(0, 0, 0, value)
1167
if getattr(self, "disable_initiator_tag", None) is None:
1168
return
1169
# Reschedule timeout
1170
gobject.source_remove(self.disable_initiator_tag)
1171
self.disable_initiator_tag = None
1172
self.expires = None
1173
time_to_die = (self.
1174
_timedelta_to_milliseconds((self
1175
.last_checked_ok
1176
+ self.timeout)
1177
- datetime.datetime
1178
.utcnow()))
1179
if time_to_die <= 0:
1180
# The timeout has passed
1181
self.disable()
1182
else:
1183
self.expires = (datetime.datetime.utcnow()
1184
+ datetime.timedelta(milliseconds = time_to_die))
1185
self.disable_initiator_tag = (gobject.timeout_add
1186
(time_to_die, self.disable))
1569
# Reschedule disabling
1570
if self.enabled:
1571
now = datetime.datetime.utcnow()
1572
self.expires += self.timeout - old_timeout
1573
if self.expires <= now:
1574
# The timeout has passed
1575
self.disable()
1576
else:
1577
if (getattr(self, "disable_initiator_tag", None)
1578
is None):
1579
return
1580
gobject.source_remove(self.disable_initiator_tag)
1581
self.disable_initiator_tag = (
1582
gobject.timeout_add(
1583
int((self.expires - now).total_seconds()
1584
* 1000), self.disable))
1187
1585
1188
1586
# ExtendedTimeout - property
1189
1587
@dbus_service_property(_interface, signature="t",
1190
1588
access="readwrite")
1191
1589
def ExtendedTimeout_dbus_property(self, value=None):
1192
1590
if value is None: # get
1193
return dbus.UInt64(self.extended_timeout_milliseconds())
1591
return dbus.UInt64(self.extended_timeout.total_seconds()
1592
* 1000)
1194
1593
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1195
1594
1196
1595
# Interval - property
1198
1597
access="readwrite")
1199
1598
def Interval_dbus_property(self, value=None):
1200
1599
if value is None: # get
1201
return dbus.UInt64(self.interval_milliseconds())
1600
return dbus.UInt64(self.interval.total_seconds() * 1000)
1202
1601
self.interval = datetime.timedelta(0, 0, 0, value)
1203
1602
if getattr(self, "checker_initiator_tag", None) is None:
1204
1603
return
1205
# Reschedule checker run
1206
gobject.source_remove(self.checker_initiator_tag)
1207
self.checker_initiator_tag = (gobject.timeout_add
1208
(value, self.start_checker))
1209
self.start_checker() # Start one now, too
1604
if self.enabled:
1605
# Reschedule checker run
1606
gobject.source_remove(self.checker_initiator_tag)
1607
self.checker_initiator_tag = (gobject.timeout_add
1608
(value, self.start_checker))
1609
self.start_checker() # Start one now, too
1210
1610
1211
1611
# Checker - property
1212
1612
@dbus_service_property(_interface, signature="s",
1214
1614
def Checker_dbus_property(self, value=None):
1215
1615
if value is None: # get
1216
1616
return dbus.String(self.checker_command)
1217
self.checker_command = value
1617
self.checker_command = str(value)
1218
1618
1219
1619
# CheckerRunning - property
1220
1620
@dbus_service_property(_interface, signature="b",
1236
1636
@dbus_service_property(_interface, signature="ay",
1237
1637
access="write", byte_arrays=True)
1238
1638
def Secret_dbus_property(self, value):
1239
self.secret = str(value)
1639
self.secret = bytes(value)
1240
1640
1241
1641
del _interface
1242
1642
1249
1649
raise KeyError()
1250
1650
1251
1651
def __getattribute__(self, name):
1252
if(name == '_pipe'):
1652
if name == '_pipe':
1253
1653
return super(ProxyClient, self).__getattribute__(name)
1254
1654
self._pipe.send(('getattr', name))
1255
1655
data = self._pipe.recv()
1262
1662
return func
1263
1663
1264
1664
def __setattr__(self, name, value):
1265
if(name == '_pipe'):
1665
if name == '_pipe':
1266
1666
return super(ProxyClient, self).__setattr__(name, value)
1267
1667
self._pipe.send(('setattr', name, value))
1268
1668
1269
class ClientDBusTransitional(ClientDBus):
1270
__metaclass__ = AlternateDBusNamesMetaclass
1271
1669
1272
1670
class ClientHandler(socketserver.BaseRequestHandler, object):
1273
1671
"""A class to handle client connections.
1278
1676
def handle(self):
1279
1677
with contextlib.closing(self.server.child_pipe) as child_pipe:
1280
1678
logger.info("TCP connection from: %s",
1281
unicode(self.client_address))
1679
str(self.client_address))
1282
1680
logger.debug("Pipe FD: %d",
1283
1681
self.server.child_pipe.fileno())
1284
1682
1310
1708
logger.debug("Protocol version: %r", line)
1311
1709
try:
1312
1710
if int(line.strip().split()[0]) > 1:
1313
raise RuntimeError
1711
raise RuntimeError(line)
1314
1712
except (ValueError, IndexError, RuntimeError) as error:
1315
1713
logger.error("Unknown protocol version: %s", error)
1316
1714
return
1353
1751
client.name)
1354
1752
if self.server.use_dbus:
1355
1753
# Emit D-Bus signal
1356
client.Rejected("Disabled")
1754
client.Rejected("Disabled")
1357
1755
return
1358
1756
1359
if client._approved or not client.approval_delay:
1757
if client.approved or not client.approval_delay:
1360
1758
#We are approved or approval is disabled
1361
1759
break
1362
elif client._approved is None:
1760
elif client.approved is None:
1363
1761
logger.info("Client %s needs approval",
1364
1762
client.name)
1365
1763
if self.server.use_dbus:
1366
1764
# Emit D-Bus signal
1367
1765
client.NeedApproval(
1368
client.approval_delay_milliseconds(),
1369
client.approved_by_default)
1766
client.approval_delay.total_seconds()
1767
* 1000, client.approved_by_default)
1370
1768
else:
1371
1769
logger.warning("Client %s was not approved",
1372
1770
client.name)
1376
1774
return
1377
1775
1378
1776
#wait until timeout or approved
1379
#x = float(client._timedelta_to_milliseconds(delay))
1380
1777
time = datetime.datetime.now()
1381
1778
client.changedstate.acquire()
1382
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1779
client.changedstate.wait(delay.total_seconds())
1383
1780
client.changedstate.release()
1384
1781
time2 = datetime.datetime.now()
1385
1782
if (time2 - time) >= delay:
1401
1798
try:
1402
1799
sent = session.send(client.secret[sent_size:])
1403
1800
except gnutls.errors.GNUTLSError as error:
1404
logger.warning("gnutls send failed")
1801
logger.warning("gnutls send failed",
1802
exc_info=error)
1405
1803
return
1406
1804
logger.debug("Sent: %d, remaining: %d",
1407
1805
sent, len(client.secret)
1409
1807
sent_size += sent
1410
1808
1411
1809
logger.info("Sending secret to %s", client.name)
1412
# bump the timeout as if seen
1413
client.checked_ok(client.extended_timeout)
1810
# bump the timeout using extended_timeout
1811
client.bump_timeout(client.extended_timeout)
1414
1812
if self.server.use_dbus:
1415
1813
# Emit D-Bus signal
1416
1814
client.GotSecret()
1421
1819
try:
1422
1820
session.bye()
1423
1821
except gnutls.errors.GNUTLSError as error:
1424
logger.warning("GnuTLS bye failed")
1822
logger.warning("GnuTLS bye failed",
1823
exc_info=error)
1425
1824
1426
1825
@staticmethod
1427
1826
def peer_certificate(session):
1483
1882
# Convert the buffer to a Python bytestring
1484
1883
fpr = ctypes.string_at(buf, buf_len.value)
1485
1884
# Convert the bytestring to hexadecimal notation
1486
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1885
hex_fpr = binascii.hexlify(fpr).upper()
1487
1886
return hex_fpr
1488
1887
1489
1888
1492
1891
def sub_process_main(self, request, address):
1493
1892
try:
1494
1893
self.finish_request(request, address)
1495
except:
1894
except Exception:
1496
1895
self.handle_error(request, address)
1497
1896
self.close_request(request)
1498
1897
1499
1898
def process_request(self, request, address):
1500
1899
"""Start a new process to process the request."""
1501
multiprocessing.Process(target = self.sub_process_main,
1502
args = (request, address)).start()
1900
proc = multiprocessing.Process(target = self.sub_process_main,
1901
args = (request, address))
1902
proc.start()
1903
return proc
1503
1904
1504
1905
1505
1906
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1511
1912
"""
1512
1913
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1513
1914
1514
super(MultiprocessingMixInWithPipe,
1515
self).process_request(request, client_address)
1915
proc = MultiprocessingMixIn.process_request(self, request,
1916
client_address)
1516
1917
self.child_pipe.close()
1517
self.add_pipe(parent_pipe)
1918
self.add_pipe(parent_pipe, proc)
1518
1919
1519
def add_pipe(self, parent_pipe):
1920
def add_pipe(self, parent_pipe, proc):
1520
1921
"""Dummy function; override as necessary"""
1521
raise NotImplementedError
1922
raise NotImplementedError()
1522
1923
1523
1924
1524
1925
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1531
1932
use_ipv6: Boolean; to use IPv6 or not
1532
1933
"""
1533
1934
def __init__(self, server_address, RequestHandlerClass,
1534
interface=None, use_ipv6=True):
1935
interface=None, use_ipv6=True, socketfd=None):
1936
"""If socketfd is set, use that file descriptor instead of
1937
creating a new one with socket.socket().
1938
"""
1535
1939
self.interface = interface
1536
1940
if use_ipv6:
1537
1941
self.address_family = socket.AF_INET6
1942
if socketfd is not None:
1943
# Save the file descriptor
1944
self.socketfd = socketfd
1945
# Save the original socket.socket() function
1946
self.socket_socket = socket.socket
1947
# To implement --socket, we monkey patch socket.socket.
1948
#
1949
# (When socketserver.TCPServer is a new-style class, we
1950
# could make self.socket into a property instead of monkey
1951
# patching socket.socket.)
1952
#
1953
# Create a one-time-only replacement for socket.socket()
1954
@functools.wraps(socket.socket)
1955
def socket_wrapper(*args, **kwargs):
1956
# Restore original function so subsequent calls are
1957
# not affected.
1958
socket.socket = self.socket_socket
1959
del self.socket_socket
1960
# This time only, return a new socket object from the
1961
# saved file descriptor.
1962
return socket.fromfd(self.socketfd, *args, **kwargs)
1963
# Replace socket.socket() function with wrapper
1964
socket.socket = socket_wrapper
1965
# The socketserver.TCPServer.__init__ will call
1966
# socket.socket(), which might be our replacement,
1967
# socket_wrapper(), if socketfd was set.
1538
1968
socketserver.TCPServer.__init__(self, server_address,
1539
1969
RequestHandlerClass)
1970
1540
1971
def server_bind(self):
1541
1972
"""This overrides the normal server_bind() function
1542
1973
to bind to an interface if one was specified, and also NOT to
1550
1981
try:
1551
1982
self.socket.setsockopt(socket.SOL_SOCKET,
1552
1983
SO_BINDTODEVICE,
1553
str(self.interface
1554
+ '\0'))
1984
(self.interface + "\0")
1985
.encode("utf-8"))
1555
1986
except socket.error as error:
1556
if error[0] == errno.EPERM:
1557
logger.error("No permission to"
1558
" bind to interface %s",
1559
self.interface)
1560
elif error[0] == errno.ENOPROTOOPT:
1987
if error.errno == errno.EPERM:
1988
logger.error("No permission to bind to"
1989
" interface %s", self.interface)
1990
elif error.errno == errno.ENOPROTOOPT:
1561
1991
logger.error("SO_BINDTODEVICE not available;"
1562
1992
" cannot bind to interface %s",
1563
1993
self.interface)
1994
elif error.errno == errno.ENODEV:
1995
logger.error("Interface %s does not exist,"
1996
" cannot bind", self.interface)
1564
1997
else:
1565
1998
raise
1566
1999
# Only bind(2) the socket if we really need to.
1569
2002
if self.address_family == socket.AF_INET6:
1570
2003
any_address = "::" # in6addr_any
1571
2004
else:
1572
any_address = socket.INADDR_ANY
2005
any_address = "0.0.0.0" # INADDR_ANY
1573
2006
self.server_address = (any_address,
1574
2007
self.server_address[1])
1575
2008
elif not self.server_address[1]:
1596
2029
"""
1597
2030
def __init__(self, server_address, RequestHandlerClass,
1598
2031
interface=None, use_ipv6=True, clients=None,
1599
gnutls_priority=None, use_dbus=True):
2032
gnutls_priority=None, use_dbus=True, socketfd=None):
1600
2033
self.enabled = False
1601
2034
self.clients = clients
1602
2035
if self.clients is None:
1603
self.clients = set()
2036
self.clients = {}
1604
2037
self.use_dbus = use_dbus
1605
2038
self.gnutls_priority = gnutls_priority
1606
2039
IPv6_TCPServer.__init__(self, server_address,
1607
2040
RequestHandlerClass,
1608
2041
interface = interface,
1609
use_ipv6 = use_ipv6)
2042
use_ipv6 = use_ipv6,
2043
socketfd = socketfd)
1610
2044
def server_activate(self):
1611
2045
if self.enabled:
1612
2046
return socketserver.TCPServer.server_activate(self)
2047
1613
2048
def enable(self):
1614
2049
self.enabled = True
1615
def add_pipe(self, parent_pipe):
2050
2051
def add_pipe(self, parent_pipe, proc):
1616
2052
# Call "handle_ipc" for both data and EOF events
1617
2053
gobject.io_add_watch(parent_pipe.fileno(),
1618
2054
gobject.IO_IN | gobject.IO_HUP,
1619
2055
functools.partial(self.handle_ipc,
1620
parent_pipe = parent_pipe))
1621
2056
parent_pipe =
2057
parent_pipe,
2058
proc = proc))
2059
1622
2060
def handle_ipc(self, source, condition, parent_pipe=None,
1623
client_object=None):
1624
condition_names = {
1625
gobject.IO_IN: "IN", # There is data to read.
1626
gobject.IO_OUT: "OUT", # Data can be written (without
1627
# blocking).
1628
gobject.IO_PRI: "PRI", # There is urgent data to read.
1629
gobject.IO_ERR: "ERR", # Error condition.
1630
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1631
# broken, usually for pipes and
1632
# sockets).
1633
}
1634
conditions_string = ' | '.join(name
1635
for cond, name in
1636
condition_names.iteritems()
1637
if cond & condition)
1638
# error or the other end of multiprocessing.Pipe has closed
1639
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2061
proc = None, client_object=None):
2062
# error, or the other end of multiprocessing.Pipe has closed
2063
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2064
# Wait for other process to exit
2065
proc.join()
1640
2066
return False
1641
2067
1642
2068
# Read a request from the child
1647
2073
fpr = request[1]
1648
2074
address = request[2]
1649
2075
1650
for c in self.clients:
2076
for c in self.clients.itervalues():
1651
2077
if c.fingerprint == fpr:
1652
2078
client = c
1653
2079
break
1656
2082
"dress: %s", fpr, address)
1657
2083
if self.use_dbus:
1658
2084
# Emit D-Bus signal
1659
mandos_dbus_service.ClientNotFound(fpr, address[0])
2085
mandos_dbus_service.ClientNotFound(fpr,
2086
address[0])
1660
2087
parent_pipe.send(False)
1661
2088
return False
1662
2089
1663
2090
gobject.io_add_watch(parent_pipe.fileno(),
1664
2091
gobject.IO_IN | gobject.IO_HUP,
1665
2092
functools.partial(self.handle_ipc,
1666
parent_pipe = parent_pipe,
1667
client_object = client))
2093
parent_pipe =
2094
parent_pipe,
2095
proc = proc,
2096
client_object =
2097
client))
1668
2098
parent_pipe.send(True)
1669
# remove the old hook in favor of the new above hook on same fileno
2099
# remove the old hook in favor of the new above hook on
2100
# same fileno
1670
2101
return False
1671
2102
if command == 'funcall':
1672
2103
funcname = request[1]
1673
2104
args = request[2]
1674
2105
kwargs = request[3]
1675
2106
1676
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2107
parent_pipe.send(('data', getattr(client_object,
2108
funcname)(*args,
2109
**kwargs)))
1677
2110
1678
2111
if command == 'getattr':
1679
2112
attrname = request[1]
1680
2113
if callable(client_object.__getattribute__(attrname)):
1681
2114
parent_pipe.send(('function',))
1682
2115
else:
1683
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2116
parent_pipe.send(('data', client_object
2117
.__getattribute__(attrname)))
1684
2118
1685
2119
if command == 'setattr':
1686
2120
attrname = request[1]
1690
2124
return True
1691
2125
1692
2126
2127
def rfc3339_duration_to_delta(duration):
2128
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2129
2130
>>> rfc3339_duration_to_delta("P7D")
2131
datetime.timedelta(7)
2132
>>> rfc3339_duration_to_delta("PT60S")
2133
datetime.timedelta(0, 60)
2134
>>> rfc3339_duration_to_delta("PT60M")
2135
datetime.timedelta(0, 3600)
2136
>>> rfc3339_duration_to_delta("PT24H")
2137
datetime.timedelta(1)
2138
>>> rfc3339_duration_to_delta("P1W")
2139
datetime.timedelta(7)
2140
>>> rfc3339_duration_to_delta("PT5M30S")
2141
datetime.timedelta(0, 330)
2142
>>> rfc3339_duration_to_delta("P1DT3M20S")
2143
datetime.timedelta(1, 200)
2144
"""
2145
2146
# Parsing an RFC 3339 duration with regular expressions is not
2147
# possible - there would have to be multiple places for the same
2148
# values, like seconds. The current code, while more esoteric, is
2149
# cleaner without depending on a parsing library. If Python had a
2150
# built-in library for parsing we would use it, but we'd like to
2151
# avoid excessive use of external libraries.
2152
2153
# New type for defining tokens, syntax, and semantics all-in-one
2154
Token = collections.namedtuple("Token",
2155
("regexp", # To match token; if
2156
# "value" is not None,
2157
# must have a "group"
2158
# containing digits
2159
"value", # datetime.timedelta or
2160
# None
2161
"followers")) # Tokens valid after
2162
# this token
2163
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2164
# the "duration" ABNF definition in RFC 3339, Appendix A.
2165
token_end = Token(re.compile(r"$"), None, frozenset())
2166
token_second = Token(re.compile(r"(\d+)S"),
2167
datetime.timedelta(seconds=1),
2168
frozenset((token_end,)))
2169
token_minute = Token(re.compile(r"(\d+)M"),
2170
datetime.timedelta(minutes=1),
2171
frozenset((token_second, token_end)))
2172
token_hour = Token(re.compile(r"(\d+)H"),
2173
datetime.timedelta(hours=1),
2174
frozenset((token_minute, token_end)))
2175
token_time = Token(re.compile(r"T"),
2176
None,
2177
frozenset((token_hour, token_minute,
2178
token_second)))
2179
token_day = Token(re.compile(r"(\d+)D"),
2180
datetime.timedelta(days=1),
2181
frozenset((token_time, token_end)))
2182
token_month = Token(re.compile(r"(\d+)M"),
2183
datetime.timedelta(weeks=4),
2184
frozenset((token_day, token_end)))
2185
token_year = Token(re.compile(r"(\d+)Y"),
2186
datetime.timedelta(weeks=52),
2187
frozenset((token_month, token_end)))
2188
token_week = Token(re.compile(r"(\d+)W"),
2189
datetime.timedelta(weeks=1),
2190
frozenset((token_end,)))
2191
token_duration = Token(re.compile(r"P"), None,
2192
frozenset((token_year, token_month,
2193
token_day, token_time,
2194
token_week)))
2195
# Define starting values
2196
value = datetime.timedelta() # Value so far
2197
found_token = None
2198
followers = frozenset((token_duration,)) # Following valid tokens
2199
s = duration # String left to parse
2200
# Loop until end token is found
2201
while found_token is not token_end:
2202
# Search for any currently valid tokens
2203
for token in followers:
2204
match = token.regexp.match(s)
2205
if match is not None:
2206
# Token found
2207
if token.value is not None:
2208
# Value found, parse digits
2209
factor = int(match.group(1), 10)
2210
# Add to value so far
2211
value += factor * token.value
2212
# Strip token from string
2213
s = token.regexp.sub("", s, 1)
2214
# Go to found token
2215
found_token = token
2216
# Set valid next tokens
2217
followers = found_token.followers
2218
break
2219
else:
2220
# No currently valid tokens were found
2221
raise ValueError("Invalid RFC 3339 duration")
2222
# End token found
2223
return value
2224
2225
1693
2226
def string_to_delta(interval):
1694
2227
"""Parse a string and return a datetime.timedelta
1695
2228
1706
2239
>>> string_to_delta('5m 30s')
1707
2240
datetime.timedelta(0, 330)
1708
2241
"""
2242
2243
try:
2244
return rfc3339_duration_to_delta(interval)
2245
except ValueError:
2246
pass
2247
1709
2248
timevalue = datetime.timedelta(0)
1710
2249
for s in interval.split():
1711
2250
try:
1712
suffix = unicode(s[-1])
2251
suffix = s[-1]
1713
2252
value = int(s[:-1])
1714
2253
if suffix == "d":
1715
2254
delta = datetime.timedelta(value)
1722
2261
elif suffix == "w":
1723
2262
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1724
2263
else:
1725
raise ValueError("Unknown suffix %r" % suffix)
1726
except (ValueError, IndexError) as e:
2264
raise ValueError("Unknown suffix {!r}"
2265
.format(suffix))
2266
except IndexError as e:
1727
2267
raise ValueError(*(e.args))
1728
2268
timevalue += delta
1729
2269
return timevalue
1730
2270
1731
2271
1732
def if_nametoindex(interface):
1733
"""Call the C function if_nametoindex(), or equivalent
1734
1735
Note: This function cannot accept a unicode string."""
1736
global if_nametoindex
1737
try:
1738
if_nametoindex = (ctypes.cdll.LoadLibrary
1739
(ctypes.util.find_library("c"))
1740
.if_nametoindex)
1741
except (OSError, AttributeError):
1742
logger.warning("Doing if_nametoindex the hard way")
1743
def if_nametoindex(interface):
1744
"Get an interface index the hard way, i.e. using fcntl()"
1745
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1746
with contextlib.closing(socket.socket()) as s:
1747
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1748
struct.pack(str("16s16x"),
1749
interface))
1750
interface_index = struct.unpack(str("I"),
1751
ifreq[16:20])[0]
1752
return interface_index
1753
return if_nametoindex(interface)
1754
1755
1756
2272
def daemon(nochdir = False, noclose = False):
1757
2273
"""See daemon(3). Standard BSD Unix function.
1758
2274
1766
2282
sys.exit()
1767
2283
if not noclose:
1768
2284
# Close all standard open file descriptors
1769
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2285
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1770
2286
if not stat.S_ISCHR(os.fstat(null).st_mode):
1771
raise OSError(errno.ENODEV,
1772
"%s not a character device"
1773
% os.path.devnull)
2287
raise OSError(errno.ENODEV, "{} not a character device"
2288
.format(os.devnull))
1774
2289
os.dup2(null, sys.stdin.fileno())
1775
2290
os.dup2(null, sys.stdout.fileno())
1776
2291
os.dup2(null, sys.stderr.fileno())
1785
2300
1786
2301
parser = argparse.ArgumentParser()
1787
2302
parser.add_argument("-v", "--version", action="version",
1788
version = "%%(prog)s %s" % version,
2303
version = "%(prog)s {}".format(version),
1789
2304
help="show version number and exit")
1790
2305
parser.add_argument("-i", "--interface", metavar="IF",
1791
2306
help="Bind to interface IF")
1797
2312
help="Run self-test")
1798
2313
parser.add_argument("--debug", action="store_true",
1799
2314
help="Debug mode; run in foreground and log"
1800
" to terminal")
2315
" to terminal", default=None)
1801
2316
parser.add_argument("--debuglevel", metavar="LEVEL",
1802
2317
help="Debug level for stdout output")
1803
2318
parser.add_argument("--priority", help="GnuTLS"
1810
2325
" files")
1811
2326
parser.add_argument("--no-dbus", action="store_false",
1812
2327
dest="use_dbus", help="Do not provide D-Bus"
1813
" system bus interface")
2328
" system bus interface", default=None)
1814
2329
parser.add_argument("--no-ipv6", action="store_false",
1815
dest="use_ipv6", help="Do not use IPv6")
2330
dest="use_ipv6", help="Do not use IPv6",
2331
default=None)
2332
parser.add_argument("--no-restore", action="store_false",
2333
dest="restore", help="Do not restore stored"
2334
" state", default=None)
2335
parser.add_argument("--socket", type=int,
2336
help="Specify a file descriptor to a network"
2337
" socket to use instead of creating one")
2338
parser.add_argument("--statedir", metavar="DIR",
2339
help="Directory to save/restore state in")
2340
parser.add_argument("--foreground", action="store_true",
2341
help="Run in foreground", default=None)
2342
parser.add_argument("--no-zeroconf", action="store_false",
2343
dest="zeroconf", help="Do not use Zeroconf",
2344
default=None)
2345
1816
2346
options = parser.parse_args()
1817
2347
1818
2348
if options.check:
1819
2349
import doctest
1820
doctest.testmod()
1821
sys.exit()
2350
fail_count, test_count = doctest.testmod()
2351
sys.exit(os.EX_OK if fail_count == 0 else 1)
1822
2352
1823
2353
# Default values for config file for server-global settings
1824
2354
server_defaults = { "interface": "",
1826
2356
"port": "",
1827
2357
"debug": "False",
1828
2358
"priority":
1829
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2359
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
1830
2360
"servicename": "Mandos",
1831
2361
"use_dbus": "True",
1832
2362
"use_ipv6": "True",
1833
2363
"debuglevel": "",
2364
"restore": "True",
2365
"socket": "",
2366
"statedir": "/var/lib/mandos",
2367
"foreground": "False",
2368
"zeroconf": "True",
1834
2369
}
1835
2370
1836
2371
# Parse config file for server-global settings
1841
2376
# Convert the SafeConfigParser object to a dict
1842
2377
server_settings = server_config.defaults()
1843
2378
# Use the appropriate methods on the non-string config options
1844
for option in ("debug", "use_dbus", "use_ipv6"):
2379
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1845
2380
server_settings[option] = server_config.getboolean("DEFAULT",
1846
2381
option)
1847
2382
if server_settings["port"]:
1848
2383
server_settings["port"] = server_config.getint("DEFAULT",
1849
2384
"port")
2385
if server_settings["socket"]:
2386
server_settings["socket"] = server_config.getint("DEFAULT",
2387
"socket")
2388
# Later, stdin will, and stdout and stderr might, be dup'ed
2389
# over with an opened os.devnull. But we don't want this to
2390
# happen with a supplied network socket.
2391
if 0 <= server_settings["socket"] <= 2:
2392
server_settings["socket"] = os.dup(server_settings
2393
["socket"])
1850
2394
del server_config
1851
2395
1852
2396
# Override the settings from the config file with command line
1853
2397
# options, if set.
1854
2398
for option in ("interface", "address", "port", "debug",
1855
2399
"priority", "servicename", "configdir",
1856
"use_dbus", "use_ipv6", "debuglevel"):
2400
"use_dbus", "use_ipv6", "debuglevel", "restore",
2401
"statedir", "socket", "foreground", "zeroconf"):
1857
2402
value = getattr(options, option)
1858
2403
if value is not None:
1859
2404
server_settings[option] = value
1860
2405
del options
1861
2406
# Force all strings to be unicode
1862
2407
for option in server_settings.keys():
1863
if type(server_settings[option]) is str:
1864
server_settings[option] = unicode(server_settings[option])
2408
if isinstance(server_settings[option], bytes):
2409
server_settings[option] = (server_settings[option]
2410
.decode("utf-8"))
2411
# Force all boolean options to be boolean
2412
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2413
"foreground", "zeroconf"):
2414
server_settings[option] = bool(server_settings[option])
2415
# Debug implies foreground
2416
if server_settings["debug"]:
2417
server_settings["foreground"] = True
1865
2418
# Now we have our good server settings in "server_settings"
1866
2419
1867
2420
##################################################################
1868
2421
2422
if (not server_settings["zeroconf"] and
2423
not (server_settings["port"]
2424
or server_settings["socket"] != "")):
2425
parser.error("Needs port or socket to work without"
2426
" Zeroconf")
2427
1869
2428
# For convenience
1870
2429
debug = server_settings["debug"]
1871
2430
debuglevel = server_settings["debuglevel"]
1872
2431
use_dbus = server_settings["use_dbus"]
1873
2432
use_ipv6 = server_settings["use_ipv6"]
2433
stored_state_path = os.path.join(server_settings["statedir"],
2434
stored_state_file)
2435
foreground = server_settings["foreground"]
2436
zeroconf = server_settings["zeroconf"]
2437
2438
if debug:
2439
initlogger(debug, logging.DEBUG)
2440
else:
2441
if not debuglevel:
2442
initlogger(debug)
2443
else:
2444
level = getattr(logging, debuglevel.upper())
2445
initlogger(debug, level)
1874
2446
1875
2447
if server_settings["servicename"] != "Mandos":
1876
2448
syslogger.setFormatter(logging.Formatter
1877
('Mandos (%s) [%%(process)d]:'
1878
' %%(levelname)s: %%(message)s'
1879
% server_settings["servicename"]))
2449
('Mandos ({}) [%(process)d]:'
2450
' %(levelname)s: %(message)s'
2451
.format(server_settings
2452
["servicename"])))
1880
2453
1881
2454
# Parse config file with clients
1882
client_defaults = { "timeout": "5m",
1883
"extended_timeout": "15m",
1884
"interval": "2m",
1885
"checker": "fping -q -- %%(host)s",
1886
"host": "",
1887
"approval_delay": "0s",
1888
"approval_duration": "1s",
1889
}
1890
client_config = configparser.SafeConfigParser(client_defaults)
2455
client_config = configparser.SafeConfigParser(Client
2456
.client_defaults)
1891
2457
client_config.read(os.path.join(server_settings["configdir"],
1892
2458
"clients.conf"))
1893
2459
1894
2460
global mandos_dbus_service
1895
2461
mandos_dbus_service = None
1896
2462
2463
socketfd = None
2464
if server_settings["socket"] != "":
2465
socketfd = server_settings["socket"]
1897
2466
tcp_server = MandosServer((server_settings["address"],
1898
2467
server_settings["port"]),
1899
2468
ClientHandler,
1902
2471
use_ipv6=use_ipv6,
1903
2472
gnutls_priority=
1904
2473
server_settings["priority"],
1905
use_dbus=use_dbus)
1906
if not debug:
1907
pidfilename = "/var/run/mandos.pid"
2474
use_dbus=use_dbus,
2475
socketfd=socketfd)
2476
if not foreground:
2477
pidfilename = "/run/mandos.pid"
2478
if not os.path.isdir("/run/."):
2479
pidfilename = "/var/run/mandos.pid"
2480
pidfile = None
1908
2481
try:
1909
2482
pidfile = open(pidfilename, "w")
1910
except IOError:
1911
logger.error("Could not open file %r", pidfilename)
2483
except IOError as e:
2484
logger.error("Could not open file %r", pidfilename,
2485
exc_info=e)
1912
2486
1913
try:
1914
uid = pwd.getpwnam("_mandos").pw_uid
1915
gid = pwd.getpwnam("_mandos").pw_gid
1916
except KeyError:
2487
for name in ("_mandos", "mandos", "nobody"):
1917
2488
try:
1918
uid = pwd.getpwnam("mandos").pw_uid
1919
gid = pwd.getpwnam("mandos").pw_gid
2489
uid = pwd.getpwnam(name).pw_uid
2490
gid = pwd.getpwnam(name).pw_gid
2491
break
1920
2492
except KeyError:
1921
try:
1922
uid = pwd.getpwnam("nobody").pw_uid
1923
gid = pwd.getpwnam("nobody").pw_gid
1924
except KeyError:
1925
uid = 65534
1926
gid = 65534
2493
continue
2494
else:
2495
uid = 65534
2496
gid = 65534
1927
2497
try:
1928
2498
os.setgid(gid)
1929
2499
os.setuid(uid)
1930
2500
except OSError as error:
1931
if error[0] != errno.EPERM:
1932
raise error
1933
1934
if not debug and not debuglevel:
1935
syslogger.setLevel(logging.WARNING)
1936
console.setLevel(logging.WARNING)
1937
if debuglevel:
1938
level = getattr(logging, debuglevel.upper())
1939
syslogger.setLevel(level)
1940
console.setLevel(level)
2501
if error.errno != errno.EPERM:
2502
raise
1941
2503
1942
2504
if debug:
1943
2505
# Enable all possible GnuTLS debugging
1954
2516
.gnutls_global_set_log_function(debug_gnutls))
1955
2517
1956
2518
# Redirect stdin so all checkers get /dev/null
1957
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2519
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1958
2520
os.dup2(null, sys.stdin.fileno())
1959
2521
if null > 2:
1960
2522
os.close(null)
1961
else:
1962
# No console logging
1963
logger.removeHandler(console)
1964
2523
1965
2524
# Need to fork before connecting to D-Bus
1966
if not debug:
2525
if not foreground:
1967
2526
# Close all input and output, do double fork, etc.
1968
2527
daemon()
1969
2528
2529
# multiprocessing will use threads, so before we use gobject we
2530
# need to inform gobject that threads will be used.
2531
gobject.threads_init()
2532
1970
2533
global main_loop
1971
2534
# From the Avahi example code
1972
DBusGMainLoop(set_as_default=True )
2535
DBusGMainLoop(set_as_default=True)
1973
2536
main_loop = gobject.MainLoop()
1974
2537
bus = dbus.SystemBus()
1975
2538
# End of Avahi example code
1977
2540
try:
1978
2541
bus_name = dbus.service.BusName("se.recompile.Mandos",
1979
2542
bus, do_not_queue=True)
1980
old_bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1981
bus, do_not_queue=True)
2543
old_bus_name = (dbus.service.BusName
2544
("se.bsnet.fukt.Mandos", bus,
2545
do_not_queue=True))
1982
2546
except dbus.exceptions.NameExistsException as e:
1983
logger.error(unicode(e) + ", disabling D-Bus")
2547
logger.error("Disabling D-Bus:", exc_info=e)
1984
2548
use_dbus = False
1985
2549
server_settings["use_dbus"] = False
1986
2550
tcp_server.use_dbus = False
1987
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1988
service = AvahiService(name = server_settings["servicename"],
1989
servicetype = "_mandos._tcp",
1990
protocol = protocol, bus = bus)
1991
if server_settings["interface"]:
1992
service.interface = (if_nametoindex
1993
(str(server_settings["interface"])))
2551
if zeroconf:
2552
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2553
service = AvahiServiceToSyslog(name =
2554
server_settings["servicename"],
2555
servicetype = "_mandos._tcp",
2556
protocol = protocol, bus = bus)
2557
if server_settings["interface"]:
2558
service.interface = (if_nametoindex
2559
(server_settings["interface"]
2560
.encode("utf-8")))
1994
2561
1995
2562
global multiprocessing_manager
1996
2563
multiprocessing_manager = multiprocessing.Manager()
1997
2564
1998
2565
client_class = Client
1999
2566
if use_dbus:
2000
client_class = functools.partial(ClientDBusTransitional, bus = bus)
2001
def client_config_items(config, section):
2002
special_settings = {
2003
"approved_by_default":
2004
lambda: config.getboolean(section,
2005
"approved_by_default"),
2006
}
2007
for name, value in config.items(section):
2567
client_class = functools.partial(ClientDBus, bus = bus)
2568
2569
client_settings = Client.config_parser(client_config)
2570
old_client_settings = {}
2571
clients_data = {}
2572
2573
# This is used to redirect stdout and stderr for checker processes
2574
global wnull
2575
wnull = open(os.devnull, "w") # A writable /dev/null
2576
# Only used if server is running in foreground but not in debug
2577
# mode
2578
if debug or not foreground:
2579
wnull.close()
2580
2581
# Get client data and settings from last running state.
2582
if server_settings["restore"]:
2583
try:
2584
with open(stored_state_path, "rb") as stored_state:
2585
clients_data, old_client_settings = (pickle.load
2586
(stored_state))
2587
os.remove(stored_state_path)
2588
except IOError as e:
2589
if e.errno == errno.ENOENT:
2590
logger.warning("Could not load persistent state: {}"
2591
.format(os.strerror(e.errno)))
2592
else:
2593
logger.critical("Could not load persistent state:",
2594
exc_info=e)
2595
raise
2596
except EOFError as e:
2597
logger.warning("Could not load persistent state: "
2598
"EOFError:", exc_info=e)
2599
2600
with PGPEngine() as pgp:
2601
for client_name, client in clients_data.items():
2602
# Skip removed clients
2603
if client_name not in client_settings:
2604
continue
2605
2606
# Decide which value to use after restoring saved state.
2607
# We have three different values: Old config file,
2608
# new config file, and saved state.
2609
# New config value takes precedence if it differs from old
2610
# config value, otherwise use saved state.
2611
for name, value in client_settings[client_name].items():
2612
try:
2613
# For each value in new config, check if it
2614
# differs from the old config value (Except for
2615
# the "secret" attribute)
2616
if (name != "secret" and
2617
value != old_client_settings[client_name]
2618
[name]):
2619
client[name] = value
2620
except KeyError:
2621
pass
2622
2623
# Clients who has passed its expire date can still be
2624
# enabled if its last checker was successful. Clients
2625
# whose checker succeeded before we stored its state is
2626
# assumed to have successfully run all checkers during
2627
# downtime.
2628
if client["enabled"]:
2629
if datetime.datetime.utcnow() >= client["expires"]:
2630
if not client["last_checked_ok"]:
2631
logger.warning(
2632
"disabling client {} - Client never "
2633
"performed a successful checker"
2634
.format(client_name))
2635
client["enabled"] = False
2636
elif client["last_checker_status"] != 0:
2637
logger.warning(
2638
"disabling client {} - Client last"
2639
" checker failed with error code {}"
2640
.format(client_name,
2641
client["last_checker_status"]))
2642
client["enabled"] = False
2643
else:
2644
client["expires"] = (datetime.datetime
2645
.utcnow()
2646
+ client["timeout"])
2647
logger.debug("Last checker succeeded,"
2648
" keeping {} enabled"
2649
.format(client_name))
2008
2650
try:
2009
yield (name, special_settings[name]())
2010
except KeyError:
2011
yield (name, value)
2012
2013
tcp_server.clients.update(set(
2014
client_class(name = section,
2015
config= dict(client_config_items(
2016
client_config, section)))
2017
for section in client_config.sections()))
2651
client["secret"] = (
2652
pgp.decrypt(client["encrypted_secret"],
2653
client_settings[client_name]
2654
["secret"]))
2655
except PGPError:
2656
# If decryption fails, we use secret from new settings
2657
logger.debug("Failed to decrypt {} old secret"
2658
.format(client_name))
2659
client["secret"] = (
2660
client_settings[client_name]["secret"])
2661
2662
# Add/remove clients based on new changes made to config
2663
for client_name in (set(old_client_settings)
2664
- set(client_settings)):
2665
del clients_data[client_name]
2666
for client_name in (set(client_settings)
2667
- set(old_client_settings)):
2668
clients_data[client_name] = client_settings[client_name]
2669
2670
# Create all client objects
2671
for client_name, client in clients_data.items():
2672
tcp_server.clients[client_name] = client_class(
2673
name = client_name, settings = client,
2674
server_settings = server_settings)
2675
2018
2676
if not tcp_server.clients:
2019
2677
logger.warning("No clients defined")
2020
2021
if not debug:
2022
try:
2023
with pidfile:
2024
pid = os.getpid()
2025
pidfile.write(str(pid) + "\n".encode("utf-8"))
2026
del pidfile
2027
except IOError:
2028
logger.error("Could not write to file %r with PID %d",
2029
pidfilename, pid)
2030
except NameError:
2031
# "pidfile" was never created
2032
pass
2678
2679
if not foreground:
2680
if pidfile is not None:
2681
try:
2682
with pidfile:
2683
pid = os.getpid()
2684
pidfile.write("{}\n".format(pid).encode("utf-8"))
2685
except IOError:
2686
logger.error("Could not write to file %r with PID %d",
2687
pidfilename, pid)
2688
del pidfile
2033
2689
del pidfilename
2034
2035
signal.signal(signal.SIGINT, signal.SIG_IGN)
2036
2690
2037
2691
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2038
2692
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2039
2693
2040
2694
if use_dbus:
2041
class MandosDBusService(dbus.service.Object):
2695
@alternate_dbus_interfaces({"se.recompile.Mandos":
2696
"se.bsnet.fukt.Mandos"})
2697
class MandosDBusService(DBusObjectWithProperties):
2042
2698
"""A D-Bus proxy object"""
2043
2699
def __init__(self):
2044
2700
dbus.service.Object.__init__(self, bus, "/")
2045
2701
_interface = "se.recompile.Mandos"
2046
2702
2703
@dbus_interface_annotations(_interface)
2704
def _foo(self):
2705
return { "org.freedesktop.DBus.Property"
2706
".EmitsChangedSignal":
2707
"false"}
2708
2047
2709
@dbus.service.signal(_interface, signature="o")
2048
2710
def ClientAdded(self, objpath):
2049
2711
"D-Bus signal"
2063
2725
def GetAllClients(self):
2064
2726
"D-Bus method"
2065
2727
return dbus.Array(c.dbus_object_path
2066
for c in tcp_server.clients)
2728
for c in
2729
tcp_server.clients.itervalues())
2067
2730
2068
2731
@dbus.service.method(_interface,
2069
2732
out_signature="a{oa{sv}}")
2070
2733
def GetAllClientsWithProperties(self):
2071
2734
"D-Bus method"
2072
2735
return dbus.Dictionary(
2073
((c.dbus_object_path, c.GetAll(""))
2074
for c in tcp_server.clients),
2736
{ c.dbus_object_path: c.GetAll("")
2737
for c in tcp_server.clients.itervalues() },
2075
2738
signature="oa{sv}")
2076
2739
2077
2740
@dbus.service.method(_interface, in_signature="o")
2078
2741
def RemoveClient(self, object_path):
2079
2742
"D-Bus method"
2080
for c in tcp_server.clients:
2743
for c in tcp_server.clients.itervalues():
2081
2744
if c.dbus_object_path == object_path:
2082
tcp_server.clients.remove(c)
2745
del tcp_server.clients[c.name]
2083
2746
c.remove_from_connection()
2084
2747
# Don't signal anything except ClientRemoved
2085
2748
c.disable(quiet=True)
2090
2753
2091
2754
del _interface
2092
2755
2093
class MandosDBusServiceTransitional(MandosDBusService):
2094
__metaclass__ = AlternateDBusNamesMetaclass
2095
mandos_dbus_service = MandosDBusServiceTransitional()
2756
mandos_dbus_service = MandosDBusService()
2096
2757
2097
2758
def cleanup():
2098
2759
"Cleanup function; run on exit"
2099
service.cleanup()
2100
2760
if zeroconf:
2761
service.cleanup()
2762
2763
multiprocessing.active_children()
2764
wnull.close()
2765
if not (tcp_server.clients or client_settings):
2766
return
2767
2768
# Store client before exiting. Secrets are encrypted with key
2769
# based on what config file has. If config file is
2770
# removed/edited, old secret will thus be unrecovable.
2771
clients = {}
2772
with PGPEngine() as pgp:
2773
for client in tcp_server.clients.itervalues():
2774
key = client_settings[client.name]["secret"]
2775
client.encrypted_secret = pgp.encrypt(client.secret,
2776
key)
2777
client_dict = {}
2778
2779
# A list of attributes that can not be pickled
2780
# + secret.
2781
exclude = { "bus", "changedstate", "secret",
2782
"checker", "server_settings" }
2783
for name, typ in (inspect.getmembers
2784
(dbus.service.Object)):
2785
exclude.add(name)
2786
2787
client_dict["encrypted_secret"] = (client
2788
.encrypted_secret)
2789
for attr in client.client_structure:
2790
if attr not in exclude:
2791
client_dict[attr] = getattr(client, attr)
2792
2793
clients[client.name] = client_dict
2794
del client_settings[client.name]["secret"]
2795
2796
try:
2797
with (tempfile.NamedTemporaryFile
2798
(mode='wb', suffix=".pickle", prefix='clients-',
2799
dir=os.path.dirname(stored_state_path),
2800
delete=False)) as stored_state:
2801
pickle.dump((clients, client_settings), stored_state)
2802
tempname=stored_state.name
2803
os.rename(tempname, stored_state_path)
2804
except (IOError, OSError) as e:
2805
if not debug:
2806
try:
2807
os.remove(tempname)
2808
except NameError:
2809
pass
2810
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2811
logger.warning("Could not save persistent state: {}"
2812
.format(os.strerror(e.errno)))
2813
else:
2814
logger.warning("Could not save persistent state:",
2815
exc_info=e)
2816
raise
2817
2818
# Delete all clients, and settings from config
2101
2819
while tcp_server.clients:
2102
client = tcp_server.clients.pop()
2820
name, client = tcp_server.clients.popitem()
2103
2821
if use_dbus:
2104
2822
client.remove_from_connection()
2105
client.disable_hook = None
2106
2823
# Don't signal anything except ClientRemoved
2107
2824
client.disable(quiet=True)
2108
2825
if use_dbus:
2109
2826
# Emit D-Bus signal
2110
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2827
mandos_dbus_service.ClientRemoved(client
2828
.dbus_object_path,
2111
2829
client.name)
2830
client_settings.clear()
2112
2831
2113
2832
atexit.register(cleanup)
2114
2833
2115
for client in tcp_server.clients:
2834
for client in tcp_server.clients.itervalues():
2116
2835
if use_dbus:
2117
2836
# Emit D-Bus signal
2118
2837
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2119
client.enable()
2838
# Need to initiate checking of clients
2839
if client.enabled:
2840
client.init_checker()
2120
2841
2121
2842
tcp_server.enable()
2122
2843
tcp_server.server_activate()
2123
2844
2124
2845
# Find out what port we got
2125
service.port = tcp_server.socket.getsockname()[1]
2846
if zeroconf:
2847
service.port = tcp_server.socket.getsockname()[1]
2126
2848
if use_ipv6:
2127
2849
logger.info("Now listening on address %r, port %d,"
2128
" flowinfo %d, scope_id %d"
2129
% tcp_server.socket.getsockname())
2850
" flowinfo %d, scope_id %d",
2851
*tcp_server.socket.getsockname())
2130
2852
else: # IPv4
2131
logger.info("Now listening on address %r, port %d"
2132
% tcp_server.socket.getsockname())
2853
logger.info("Now listening on address %r, port %d",
2854
*tcp_server.socket.getsockname())
2133
2855
2134
2856
#service.interface = tcp_server.socket.getsockname()[3]
2135
2857
2136
2858
try:
2137
# From the Avahi example code
2138
try:
2139
service.activate()
2140
except dbus.exceptions.DBusException as error:
2141
logger.critical("DBusException: %s", error)
2142
cleanup()
2143
sys.exit(1)
2144
# End of Avahi example code
2859
if zeroconf:
2860
# From the Avahi example code
2861
try:
2862
service.activate()
2863
except dbus.exceptions.DBusException as error:
2864
logger.critical("D-Bus Exception", exc_info=error)
2865
cleanup()
2866
sys.exit(1)
2867
# End of Avahi example code
2145
2868
2146
2869
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2147
2870
lambda *args, **kwargs:
2151
2874
logger.debug("Starting main loop")
2152
2875
main_loop.run()
2153
2876
except AvahiError as error:
2154
logger.critical("AvahiError: %s", error)
2877
logger.critical("Avahi Error", exc_info=error)
2155
2878
cleanup()
2156
2879
sys.exit(1)
2157
2880
except KeyboardInterrupt:
2162
2885
# Must run before the D-Bus bus name gets deregistered
2163
2886
cleanup()
2164
2887
2165
2166
2888
if __name__ == '__main__':
2167
2889
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0