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- Committer: Teddy Hogeborn
- Date: 2014-07-12 12:54:13 UTC
- Revision ID: teddy@recompile.se-20140712125413-2v66uak9da6kwjs5
mandos: The Debian package should prefer "ssh-client" over "fping".
* debian/control (mandos/Recommends): List "ssh-client" before
"fping".
* debian/control (mandos/Recommends): List "ssh-client" before
"fping".
- files added:
- DBUS-API
- debian/source
- debian/upstream
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
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# "AvahiService" class, and some lines in "main".
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#
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# Everything else is
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 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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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@fukt.bsnet.se>.
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# Contact the authors at <mandos@recompile.se>.
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#
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from __future__ import division, with_statement, absolute_import
34
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 optparse
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import argparse
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import datetime
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import errno
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import gnutls.crypto
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import functools
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import cPickle as pickle
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import multiprocessing
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import types
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import 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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90
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version = "1.0.14"
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logger = logging.getLogger(u'mandos')
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syslogger = (logging.handlers.SysLogHandler
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = "/dev/log"))
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syslogger.setFormatter(logging.Formatter
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(u'Mandos [%(process)d]: %(levelname)s:'
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u' %(message)s'))
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logger.addHandler(syslogger)
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
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u' %(levelname)s:'
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u' %(message)s'))
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logger.addHandler(console)
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multiprocessing_manager = multiprocessing.Manager()
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version = "1.6.5"
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stored_state_file = "clients.pickle"
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logger = logging.getLogger()
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syslogger = None
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try:
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if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
101
except (OSError, AttributeError):
102
def if_nametoindex(interface):
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"Get an interface index the hard way, i.e. using fcntl()"
104
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(str("16s16x"),
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interface))
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interface_index = struct.unpack(str("I"),
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ifreq[16:20])[0]
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return interface_index
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113
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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 = str("/dev/log")))
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syslogger.setFormatter(logging.Formatter
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('Mandos [%(process)d]: %(levelname)s:'
124
' %(message)s'))
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logger.addHandler(syslogger)
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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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136
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class PGPError(Exception):
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"""Exception if encryption/decryption fails"""
139
pass
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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):
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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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159
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,
166
topdown = False):
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for filename in files:
168
os.remove(os.path.join(root, filename))
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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):
176
# Passphrase can not be empty and can not contain newlines or
177
# NUL bytes. So we prefix it and hex encode it.
178
encoded = b"mandos" + binascii.hexlify(password)
179
if len(encoded) > 2048:
180
# GnuPG can't handle long passwords, so encode differently
181
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
182
.replace(b"\n", b"\\n")
183
.replace(b"\0", b"\\x00"))
184
return encoded
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def encrypt(self, data, password):
187
passphrase = self.password_encode(password)
188
with tempfile.NamedTemporaryFile(dir=self.tempdir
189
) as passfile:
190
passfile.write(passphrase)
191
passfile.flush()
192
proc = subprocess.Popen(['gpg', '--symmetric',
193
'--passphrase-file',
194
passfile.name]
195
+ self.gnupgargs,
196
stdin = subprocess.PIPE,
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stdout = subprocess.PIPE,
198
stderr = subprocess.PIPE)
199
ciphertext, err = proc.communicate(input = data)
200
if proc.returncode != 0:
201
raise PGPError(err)
202
return ciphertext
203
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def decrypt(self, data, password):
205
passphrase = self.password_encode(password)
206
with tempfile.NamedTemporaryFile(dir = self.tempdir
207
) as passfile:
208
passfile.write(passphrase)
209
passfile.flush()
210
proc = subprocess.Popen(['gpg', '--decrypt',
211
'--passphrase-file',
212
passfile.name]
213
+ self.gnupgargs,
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stdin = subprocess.PIPE,
215
stdout = subprocess.PIPE,
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stderr = subprocess.PIPE)
217
decrypted_plaintext, err = proc.communicate(input
218
= data)
219
if proc.returncode != 0:
220
raise PGPError(err)
221
return decrypted_plaintext
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class AvahiError(Exception):
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225
def __init__(self, value, *args, **kwargs):
120
241
Attributes:
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interface: integer; avahi.IF_UNSPEC or an interface index.
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Used to optionally bind to the specified interface.
123
name: string; Example: u'Mandos'
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type: string; Example: u'_mandos._tcp'.
125
See <http://www.dns-sd.org/ServiceTypes.html>
244
name: string; Example: 'Mandos'
245
type: string; Example: '_mandos._tcp'.
246
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 = u"", host = u"", max_renames = 32768,
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domain = "", host = "", max_renames = 32768,
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protocol = avahi.PROTO_UNSPEC, bus = None):
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self.interface = interface
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self.name = name
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273
self.group = None # our entry group
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self.server = None
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self.bus = bus
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self.entry_group_state_changed_match = None
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def rename(self):
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"""Derived from the Avahi example code"""
156
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if self.rename_count >= self.max_renames:
157
logger.critical(u"No suitable Zeroconf service name found"
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u" after %i retries, exiting.",
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logger.critical("No suitable Zeroconf service name found"
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" after %i retries, exiting.",
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self.rename_count)
160
raise AvahiServiceError(u"Too many renames")
161
self.name = self.server.GetAlternativeServiceName(self.name)
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logger.info(u"Changing Zeroconf service name to %r ...",
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unicode(self.name))
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syslogger.setFormatter(logging.Formatter
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(u'Mandos (%s) [%%(process)d]:'
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u' %%(levelname)s: %%(message)s'
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% self.name))
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raise AvahiServiceError("Too many renames")
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self.name = unicode(self.server
286
.GetAlternativeServiceName(self.name))
287
logger.info("Changing Zeroconf service name to %r ...",
288
self.name)
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289
self.remove()
169
self.add()
290
try:
291
self.add()
292
except dbus.exceptions.DBusException as error:
293
logger.critical("D-Bus Exception", exc_info=error)
294
self.cleanup()
295
os._exit(1)
170
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self.rename_count += 1
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171
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def remove(self):
172
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"""Derived from the Avahi example code"""
300
if self.entry_group_state_changed_match is not None:
301
self.entry_group_state_changed_match.remove()
302
self.entry_group_state_changed_match = None
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if self.group is not None:
174
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self.group.Reset()
305
175
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def add(self):
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"""Derived from the Avahi example code"""
308
self.remove()
177
309
if self.group is None:
178
310
self.group = dbus.Interface(
179
311
self.bus.get_object(avahi.DBUS_NAME,
180
312
self.server.EntryGroupNew()),
181
313
avahi.DBUS_INTERFACE_ENTRY_GROUP)
182
self.group.connect_to_signal('StateChanged',
183
self
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.entry_group_state_changed)
185
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
314
self.entry_group_state_changed_match = (
315
self.group.connect_to_signal(
316
'StateChanged', self.entry_group_state_changed))
317
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
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self.name, self.type)
187
319
self.group.AddService(
188
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self.interface,
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dbus.UInt16(self.port),
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avahi.string_array_to_txt_array(self.TXT))
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self.group.Commit()
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196
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def entry_group_state_changed(self, state, error):
197
330
"""Derived from the Avahi example code"""
198
logger.debug(u"Avahi state change: %i", state)
331
logger.debug("Avahi entry group state change: %i", state)
199
332
200
333
if state == avahi.ENTRY_GROUP_ESTABLISHED:
201
logger.debug(u"Zeroconf service established.")
334
logger.debug("Zeroconf service established.")
202
335
elif state == avahi.ENTRY_GROUP_COLLISION:
203
logger.warning(u"Zeroconf service name collision.")
336
logger.info("Zeroconf service name collision.")
204
337
self.rename()
205
338
elif state == avahi.ENTRY_GROUP_FAILURE:
206
logger.critical(u"Avahi: Error in group state changed %s",
339
logger.critical("Avahi: Error in group state changed %s",
207
340
unicode(error))
208
raise AvahiGroupError(u"State changed: %s"
209
% unicode(error))
341
raise AvahiGroupError("State changed: {0!s}"
342
.format(error))
343
210
344
def cleanup(self):
211
345
"""Derived from the Avahi example code"""
212
346
if self.group is not None:
213
self.group.Free()
347
try:
348
self.group.Free()
349
except (dbus.exceptions.UnknownMethodException,
350
dbus.exceptions.DBusException):
351
pass
214
352
self.group = None
215
def server_state_changed(self, state):
353
self.remove()
354
355
def server_state_changed(self, state, error=None):
216
356
"""Derived from the Avahi example code"""
217
if state == avahi.SERVER_COLLISION:
218
logger.error(u"Zeroconf server name collision")
219
self.remove()
357
logger.debug("Avahi server state change: %i", state)
358
bad_states = { avahi.SERVER_INVALID:
359
"Zeroconf server invalid",
360
avahi.SERVER_REGISTERING: None,
361
avahi.SERVER_COLLISION:
362
"Zeroconf server name collision",
363
avahi.SERVER_FAILURE:
364
"Zeroconf server failure" }
365
if state in bad_states:
366
if bad_states[state] is not None:
367
if error is None:
368
logger.error(bad_states[state])
369
else:
370
logger.error(bad_states[state] + ": %r", error)
371
self.cleanup()
220
372
elif state == avahi.SERVER_RUNNING:
221
373
self.add()
374
else:
375
if error is None:
376
logger.debug("Unknown state: %r", state)
377
else:
378
logger.debug("Unknown state: %r: %r", state, error)
379
222
380
def activate(self):
223
381
"""Derived from the Avahi example code"""
224
382
if self.server is None:
225
383
self.server = dbus.Interface(
226
384
self.bus.get_object(avahi.DBUS_NAME,
227
avahi.DBUS_PATH_SERVER),
385
avahi.DBUS_PATH_SERVER,
386
follow_name_owner_changes=True),
228
387
avahi.DBUS_INTERFACE_SERVER)
229
self.server.connect_to_signal(u"StateChanged",
388
self.server.connect_to_signal("StateChanged",
230
389
self.server_state_changed)
231
390
self.server_state_changed(self.server.GetState())
232
391
233
392
393
class AvahiServiceToSyslog(AvahiService):
394
def rename(self):
395
"""Add the new name to the syslog messages"""
396
ret = AvahiService.rename(self)
397
syslogger.setFormatter(logging.Formatter
398
('Mandos ({0}) [%(process)d]:'
399
' %(levelname)s: %(message)s'
400
.format(self.name)))
401
return ret
402
403
404
def timedelta_to_milliseconds(td):
405
"Convert a datetime.timedelta() to milliseconds"
406
return ((td.days * 24 * 60 * 60 * 1000)
407
+ (td.seconds * 1000)
408
+ (td.microseconds // 1000))
409
410
234
411
class Client(object):
235
412
"""A representation of a client host served by this server.
236
413
237
414
Attributes:
238
name: string; from the config file, used in log messages and
239
D-Bus identifiers
415
approved: bool(); 'None' if not yet approved/disapproved
416
approval_delay: datetime.timedelta(); Time to wait for approval
417
approval_duration: datetime.timedelta(); Duration of one approval
418
checker: subprocess.Popen(); a running checker process used
419
to see if the client lives.
420
'None' if no process is running.
421
checker_callback_tag: a gobject event source tag, or None
422
checker_command: string; External command which is run to check
423
if client lives. %() expansions are done at
424
runtime with vars(self) as dict, so that for
425
instance %(name)s can be used in the command.
426
checker_initiator_tag: a gobject event source tag, or None
427
created: datetime.datetime(); (UTC) object creation
428
client_structure: Object describing what attributes a client has
429
and is used for storing the client at exit
430
current_checker_command: string; current running checker_command
431
disable_initiator_tag: a gobject event source tag, or None
432
enabled: bool()
240
433
fingerprint: string (40 or 32 hexadecimal digits); used to
241
434
uniquely identify the client
242
secret: bytestring; sent verbatim (over TLS) to client
243
435
host: string; available for use by the checker command
244
created: datetime.datetime(); (UTC) object creation
245
last_enabled: datetime.datetime(); (UTC)
246
enabled: bool()
436
interval: datetime.timedelta(); How often to start a new checker
437
last_approval_request: datetime.datetime(); (UTC) or None
247
438
last_checked_ok: datetime.datetime(); (UTC) or None
439
last_checker_status: integer between 0 and 255 reflecting exit
440
status of last checker. -1 reflects crashed
441
checker, -2 means no checker completed yet.
442
last_enabled: datetime.datetime(); (UTC) or None
443
name: string; from the config file, used in log messages and
444
D-Bus identifiers
445
secret: bytestring; sent verbatim (over TLS) to client
248
446
timeout: datetime.timedelta(); How long from last_checked_ok
249
447
until this client is disabled
250
interval: datetime.timedelta(); How often to start a new checker
251
disable_hook: If set, called by disable() as disable_hook(self)
252
checker: subprocess.Popen(); a running checker process used
253
to see if the client lives.
254
'None' if no process is running.
255
checker_initiator_tag: a gobject event source tag, or None
256
disable_initiator_tag: - '' -
257
checker_callback_tag: - '' -
258
checker_command: string; External command which is run to check if
259
client lives. %() expansions are done at
260
runtime with vars(self) as dict, so that for
261
instance %(name)s can be used in the command.
262
current_checker_command: string; current running checker_command
263
approved_delay: datetime.timedelta(); Time to wait for approval
264
_approved: bool(); 'None' if not yet approved/disapproved
265
approved_duration: datetime.timedelta(); Duration of one approval
448
extended_timeout: extra long timeout when secret has been sent
449
runtime_expansions: Allowed attributes for runtime expansion.
450
expires: datetime.datetime(); time (UTC) when a client will be
451
disabled, or None
452
server_settings: The server_settings dict from main()
266
453
"""
267
454
268
@staticmethod
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
455
runtime_expansions = ("approval_delay", "approval_duration",
456
"created", "enabled", "expires",
457
"fingerprint", "host", "interval",
458
"last_approval_request", "last_checked_ok",
459
"last_enabled", "name", "timeout")
460
client_defaults = { "timeout": "PT5M",
461
"extended_timeout": "PT15M",
462
"interval": "PT2M",
463
"checker": "fping -q -- %%(host)s",
464
"host": "",
465
"approval_delay": "PT0S",
466
"approval_duration": "PT1S",
467
"approved_by_default": "True",
468
"enabled": "True",
469
}
274
470
275
471
def timeout_milliseconds(self):
276
472
"Return the 'timeout' attribute in milliseconds"
277
return self._timedelta_to_milliseconds(self.timeout)
473
return timedelta_to_milliseconds(self.timeout)
474
475
def extended_timeout_milliseconds(self):
476
"Return the 'extended_timeout' attribute in milliseconds"
477
return timedelta_to_milliseconds(self.extended_timeout)
278
478
279
479
def interval_milliseconds(self):
280
480
"Return the 'interval' attribute in milliseconds"
281
return self._timedelta_to_milliseconds(self.interval)
282
283
def approved_delay_milliseconds(self):
284
return self._timedelta_to_milliseconds(self.approved_delay)
285
286
def __init__(self, name = None, disable_hook=None, config=None):
287
"""Note: the 'checker' key in 'config' sets the
288
'checker_command' attribute and *not* the 'checker'
289
attribute."""
481
return timedelta_to_milliseconds(self.interval)
482
483
def approval_delay_milliseconds(self):
484
return timedelta_to_milliseconds(self.approval_delay)
485
486
@staticmethod
487
def config_parser(config):
488
"""Construct a new dict of client settings of this form:
489
{ client_name: {setting_name: value, ...}, ...}
490
with exceptions for any special settings as defined above.
491
NOTE: Must be a pure function. Must return the same result
492
value given the same arguments.
493
"""
494
settings = {}
495
for client_name in config.sections():
496
section = dict(config.items(client_name))
497
client = settings[client_name] = {}
498
499
client["host"] = section["host"]
500
# Reformat values from string types to Python types
501
client["approved_by_default"] = config.getboolean(
502
client_name, "approved_by_default")
503
client["enabled"] = config.getboolean(client_name,
504
"enabled")
505
506
client["fingerprint"] = (section["fingerprint"].upper()
507
.replace(" ", ""))
508
if "secret" in section:
509
client["secret"] = section["secret"].decode("base64")
510
elif "secfile" in section:
511
with open(os.path.expanduser(os.path.expandvars
512
(section["secfile"])),
513
"rb") as secfile:
514
client["secret"] = secfile.read()
515
else:
516
raise TypeError("No secret or secfile for section {0}"
517
.format(section))
518
client["timeout"] = string_to_delta(section["timeout"])
519
client["extended_timeout"] = string_to_delta(
520
section["extended_timeout"])
521
client["interval"] = string_to_delta(section["interval"])
522
client["approval_delay"] = string_to_delta(
523
section["approval_delay"])
524
client["approval_duration"] = string_to_delta(
525
section["approval_duration"])
526
client["checker_command"] = section["checker"]
527
client["last_approval_request"] = None
528
client["last_checked_ok"] = None
529
client["last_checker_status"] = -2
530
531
return settings
532
533
def __init__(self, settings, name = None, server_settings=None):
290
534
self.name = name
291
if config is None:
292
config = {}
293
logger.debug(u"Creating client %r", self.name)
535
if server_settings is None:
536
server_settings = {}
537
self.server_settings = server_settings
538
# adding all client settings
539
for setting, value in settings.iteritems():
540
setattr(self, setting, value)
541
542
if self.enabled:
543
if not hasattr(self, "last_enabled"):
544
self.last_enabled = datetime.datetime.utcnow()
545
if not hasattr(self, "expires"):
546
self.expires = (datetime.datetime.utcnow()
547
+ self.timeout)
548
else:
549
self.last_enabled = None
550
self.expires = None
551
552
logger.debug("Creating client %r", self.name)
294
553
# Uppercase and remove spaces from fingerprint for later
295
554
# comparison purposes with return value from the fingerprint()
296
555
# function
297
self.fingerprint = (config[u"fingerprint"].upper()
298
.replace(u" ", u""))
299
logger.debug(u" Fingerprint: %s", self.fingerprint)
300
if u"secret" in config:
301
self.secret = config[u"secret"].decode(u"base64")
302
elif u"secfile" in config:
303
with open(os.path.expanduser(os.path.expandvars
304
(config[u"secfile"])),
305
"rb") as secfile:
306
self.secret = secfile.read()
307
else:
308
#XXX Need to allow secret on demand!
309
raise TypeError(u"No secret or secfile for client %s"
310
% self.name)
311
self.host = config.get(u"host", u"")
312
self.created = datetime.datetime.utcnow()
313
self.enabled = False
314
self.last_enabled = None
315
self.last_checked_ok = None
316
self.timeout = string_to_delta(config[u"timeout"])
317
self.interval = string_to_delta(config[u"interval"])
318
self.disable_hook = disable_hook
556
logger.debug(" Fingerprint: %s", self.fingerprint)
557
self.created = settings.get("created",
558
datetime.datetime.utcnow())
559
560
# attributes specific for this server instance
319
561
self.checker = None
320
562
self.checker_initiator_tag = None
321
563
self.disable_initiator_tag = None
322
564
self.checker_callback_tag = None
323
self.checker_command = config[u"checker"]
324
565
self.current_checker_command = None
325
self.last_connect = None
566
self.approved = None
326
567
self.approvals_pending = 0
327
self._approved = None
328
self.approved_by_default = config.get(u"approved_by_default",
329
True)
330
self.approved_delay = string_to_delta(
331
config[u"approved_delay"])
332
self.approved_duration = string_to_delta(
333
config[u"approved_duration"])
334
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
568
self.changedstate = (multiprocessing_manager
569
.Condition(multiprocessing_manager
570
.Lock()))
571
self.client_structure = [attr for attr in
572
self.__dict__.iterkeys()
573
if not attr.startswith("_")]
574
self.client_structure.append("client_structure")
575
576
for name, t in inspect.getmembers(type(self),
577
lambda obj:
578
isinstance(obj,
579
property)):
580
if not name.startswith("_"):
581
self.client_structure.append(name)
335
582
583
# Send notice to process children that client state has changed
336
584
def send_changedstate(self):
337
self.changedstate.acquire()
338
self.changedstate.notify_all()
339
self.changedstate.release()
340
585
with self.changedstate:
586
self.changedstate.notify_all()
587
341
588
def enable(self):
342
589
"""Start this client's checker and timeout hooks"""
343
if getattr(self, u"enabled", False):
590
if getattr(self, "enabled", False):
344
591
# Already enabled
345
592
return
346
self.send_changedstate()
593
self.expires = datetime.datetime.utcnow() + self.timeout
594
self.enabled = True
347
595
self.last_enabled = datetime.datetime.utcnow()
596
self.init_checker()
597
self.send_changedstate()
598
599
def disable(self, quiet=True):
600
"""Disable this client."""
601
if not getattr(self, "enabled", False):
602
return False
603
if not quiet:
604
logger.info("Disabling client %s", self.name)
605
if getattr(self, "disable_initiator_tag", None) is not None:
606
gobject.source_remove(self.disable_initiator_tag)
607
self.disable_initiator_tag = None
608
self.expires = None
609
if getattr(self, "checker_initiator_tag", None) is not None:
610
gobject.source_remove(self.checker_initiator_tag)
611
self.checker_initiator_tag = None
612
self.stop_checker()
613
self.enabled = False
614
if not quiet:
615
self.send_changedstate()
616
# Do not run this again if called by a gobject.timeout_add
617
return False
618
619
def __del__(self):
620
self.disable()
621
622
def init_checker(self):
348
623
# Schedule a new checker to be started an 'interval' from now,
349
624
# and every interval from then on.
625
if self.checker_initiator_tag is not None:
626
gobject.source_remove(self.checker_initiator_tag)
350
627
self.checker_initiator_tag = (gobject.timeout_add
351
628
(self.interval_milliseconds(),
352
629
self.start_checker))
353
630
# Schedule a disable() when 'timeout' has passed
631
if self.disable_initiator_tag is not None:
632
gobject.source_remove(self.disable_initiator_tag)
354
633
self.disable_initiator_tag = (gobject.timeout_add
355
634
(self.timeout_milliseconds(),
356
635
self.disable))
357
self.enabled = True
358
636
# Also start a new checker *right now*.
359
637
self.start_checker()
360
638
361
def disable(self, quiet=True):
362
"""Disable this client."""
363
if not getattr(self, "enabled", False):
364
return False
365
if not quiet:
366
self.send_changedstate()
367
if not quiet:
368
logger.info(u"Disabling client %s", self.name)
369
if getattr(self, u"disable_initiator_tag", False):
370
gobject.source_remove(self.disable_initiator_tag)
371
self.disable_initiator_tag = None
372
if getattr(self, u"checker_initiator_tag", False):
373
gobject.source_remove(self.checker_initiator_tag)
374
self.checker_initiator_tag = None
375
self.stop_checker()
376
if self.disable_hook:
377
self.disable_hook(self)
378
self.enabled = False
379
# Do not run this again if called by a gobject.timeout_add
380
return False
381
382
def __del__(self):
383
self.disable_hook = None
384
self.disable()
385
386
639
def checker_callback(self, pid, condition, command):
387
640
"""The checker has completed, so take appropriate actions."""
388
641
self.checker_callback_tag = None
389
642
self.checker = None
390
643
if os.WIFEXITED(condition):
391
exitstatus = os.WEXITSTATUS(condition)
392
if exitstatus == 0:
393
logger.info(u"Checker for %(name)s succeeded",
644
self.last_checker_status = os.WEXITSTATUS(condition)
645
if self.last_checker_status == 0:
646
logger.info("Checker for %(name)s succeeded",
394
647
vars(self))
395
648
self.checked_ok()
396
649
else:
397
logger.info(u"Checker for %(name)s failed",
650
logger.info("Checker for %(name)s failed",
398
651
vars(self))
399
652
else:
400
logger.warning(u"Checker for %(name)s crashed?",
653
self.last_checker_status = -1
654
logger.warning("Checker for %(name)s crashed?",
401
655
vars(self))
402
656
403
657
def checked_ok(self):
404
"""Bump up the timeout for this client.
405
406
This should only be called when the client has been seen,
407
alive and well.
408
"""
658
"""Assert that the client has been seen, alive and well."""
409
659
self.last_checked_ok = datetime.datetime.utcnow()
410
gobject.source_remove(self.disable_initiator_tag)
411
self.disable_initiator_tag = (gobject.timeout_add
412
(self.timeout_milliseconds(),
413
self.disable))
660
self.last_checker_status = 0
661
self.bump_timeout()
662
663
def bump_timeout(self, timeout=None):
664
"""Bump up the timeout for this client."""
665
if timeout is None:
666
timeout = self.timeout
667
if self.disable_initiator_tag is not None:
668
gobject.source_remove(self.disable_initiator_tag)
669
self.disable_initiator_tag = None
670
if getattr(self, "enabled", False):
671
self.disable_initiator_tag = (gobject.timeout_add
672
(timedelta_to_milliseconds
673
(timeout), self.disable))
674
self.expires = datetime.datetime.utcnow() + timeout
675
676
def need_approval(self):
677
self.last_approval_request = datetime.datetime.utcnow()
414
678
415
679
def start_checker(self):
416
680
"""Start a new checker subprocess if one is not running.
418
682
If a checker already exists, leave it running and do
419
683
nothing."""
420
684
# The reason for not killing a running checker is that if we
421
# did that, then if a checker (for some reason) started
422
# running slowly and taking more than 'interval' time, the
423
# client would inevitably timeout, since no checker would get
424
# a chance to run to completion. If we instead leave running
685
# did that, and if a checker (for some reason) started running
686
# slowly and taking more than 'interval' time, then the client
687
# would inevitably timeout, since no checker would get a
688
# chance to run to completion. If we instead leave running
425
689
# checkers alone, the checker would have to take more time
426
690
# than 'timeout' for the client to be disabled, which is as it
427
691
# should be.
429
693
# If a checker exists, make sure it is not a zombie
430
694
try:
431
695
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
432
except (AttributeError, OSError), error:
433
if (isinstance(error, OSError)
434
and error.errno != errno.ECHILD):
435
raise error
696
except AttributeError:
697
pass
698
except OSError as error:
699
if error.errno != errno.ECHILD:
700
raise
436
701
else:
437
702
if pid:
438
logger.warning(u"Checker was a zombie")
703
logger.warning("Checker was a zombie")
439
704
gobject.source_remove(self.checker_callback_tag)
440
705
self.checker_callback(pid, status,
441
706
self.current_checker_command)
442
707
# Start a new checker if needed
443
708
if self.checker is None:
709
# Escape attributes for the shell
710
escaped_attrs = dict(
711
(attr, re.escape(unicode(getattr(self, attr))))
712
for attr in
713
self.runtime_expansions)
444
714
try:
445
# In case checker_command has exactly one % operator
446
command = self.checker_command % self.host
447
except TypeError:
448
# Escape attributes for the shell
449
escaped_attrs = dict((key,
450
re.escape(unicode(str(val),
451
errors=
452
u'replace')))
453
for key, val in
454
vars(self).iteritems())
455
try:
456
command = self.checker_command % escaped_attrs
457
except TypeError, error:
458
logger.error(u'Could not format string "%s":'
459
u' %s', self.checker_command, error)
460
return True # Try again later
715
command = self.checker_command % escaped_attrs
716
except TypeError as error:
717
logger.error('Could not format string "%s"',
718
self.checker_command, exc_info=error)
719
return True # Try again later
461
720
self.current_checker_command = command
462
721
try:
463
logger.info(u"Starting checker %r for %s",
722
logger.info("Starting checker %r for %s",
464
723
command, self.name)
465
724
# We don't need to redirect stdout and stderr, since
466
725
# in normal mode, that is already done by daemon(),
467
726
# and in debug mode we don't want to. (Stdin is
468
727
# always replaced by /dev/null.)
728
# The exception is when not debugging but nevertheless
729
# running in the foreground; use the previously
730
# created wnull.
731
popen_args = {}
732
if (not self.server_settings["debug"]
733
and self.server_settings["foreground"]):
734
popen_args.update({"stdout": wnull,
735
"stderr": wnull })
469
736
self.checker = subprocess.Popen(command,
470
737
close_fds=True,
471
shell=True, cwd=u"/")
472
self.checker_callback_tag = (gobject.child_watch_add
473
(self.checker.pid,
474
self.checker_callback,
475
data=command))
476
# The checker may have completed before the gobject
477
# watch was added. Check for this.
738
shell=True, cwd="/",
739
**popen_args)
740
except OSError as error:
741
logger.error("Failed to start subprocess",
742
exc_info=error)
743
return True
744
self.checker_callback_tag = (gobject.child_watch_add
745
(self.checker.pid,
746
self.checker_callback,
747
data=command))
748
# The checker may have completed before the gobject
749
# watch was added. Check for this.
750
try:
478
751
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
479
if pid:
480
gobject.source_remove(self.checker_callback_tag)
481
self.checker_callback(pid, status, command)
482
except OSError, error:
483
logger.error(u"Failed to start subprocess: %s",
484
error)
752
except OSError as error:
753
if error.errno == errno.ECHILD:
754
# This should never happen
755
logger.error("Child process vanished",
756
exc_info=error)
757
return True
758
raise
759
if pid:
760
gobject.source_remove(self.checker_callback_tag)
761
self.checker_callback(pid, status, command)
485
762
# Re-run this periodically if run by gobject.timeout_add
486
763
return True
487
764
490
767
if self.checker_callback_tag:
491
768
gobject.source_remove(self.checker_callback_tag)
492
769
self.checker_callback_tag = None
493
if getattr(self, u"checker", None) is None:
770
if getattr(self, "checker", None) is None:
494
771
return
495
logger.debug(u"Stopping checker for %(name)s", vars(self))
772
logger.debug("Stopping checker for %(name)s", vars(self))
496
773
try:
497
os.kill(self.checker.pid, signal.SIGTERM)
774
self.checker.terminate()
498
775
#time.sleep(0.5)
499
776
#if self.checker.poll() is None:
500
# os.kill(self.checker.pid, signal.SIGKILL)
501
except OSError, error:
777
# self.checker.kill()
778
except OSError as error:
502
779
if error.errno != errno.ESRCH: # No such process
503
780
raise
504
781
self.checker = None
505
782
506
def dbus_service_property(dbus_interface, signature=u"v",
507
access=u"readwrite", byte_arrays=False):
783
784
def dbus_service_property(dbus_interface, signature="v",
785
access="readwrite", byte_arrays=False):
508
786
"""Decorators for marking methods of a DBusObjectWithProperties to
509
787
become properties on the D-Bus.
510
788
517
795
"""
518
796
# Encoding deeply encoded byte arrays is not supported yet by the
519
797
# "Set" method, so we fail early here:
520
if byte_arrays and signature != u"ay":
521
raise ValueError(u"Byte arrays not supported for non-'ay'"
522
u" signature %r" % signature)
798
if byte_arrays and signature != "ay":
799
raise ValueError("Byte arrays not supported for non-'ay'"
800
" signature {0!r}".format(signature))
523
801
def decorator(func):
524
802
func._dbus_is_property = True
525
803
func._dbus_interface = dbus_interface
526
804
func._dbus_signature = signature
527
805
func._dbus_access = access
528
806
func._dbus_name = func.__name__
529
if func._dbus_name.endswith(u"_dbus_property"):
807
if func._dbus_name.endswith("_dbus_property"):
530
808
func._dbus_name = func._dbus_name[:-14]
531
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
809
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
810
return func
811
return decorator
812
813
814
def dbus_interface_annotations(dbus_interface):
815
"""Decorator for marking functions returning interface annotations
816
817
Usage:
818
819
@dbus_interface_annotations("org.example.Interface")
820
def _foo(self): # Function name does not matter
821
return {"org.freedesktop.DBus.Deprecated": "true",
822
"org.freedesktop.DBus.Property.EmitsChangedSignal":
823
"false"}
824
"""
825
def decorator(func):
826
func._dbus_is_interface = True
827
func._dbus_interface = dbus_interface
828
func._dbus_name = dbus_interface
829
return func
830
return decorator
831
832
833
def dbus_annotations(annotations):
834
"""Decorator to annotate D-Bus methods, signals or properties
835
Usage:
836
837
@dbus_service_property("org.example.Interface", signature="b",
838
access="r")
839
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
840
"org.freedesktop.DBus.Property."
841
"EmitsChangedSignal": "false"})
842
def Property_dbus_property(self):
843
return dbus.Boolean(False)
844
"""
845
def decorator(func):
846
func._dbus_annotations = annotations
532
847
return func
533
848
return decorator
534
849
554
869
555
870
class DBusObjectWithProperties(dbus.service.Object):
556
871
"""A D-Bus object with properties.
557
872
558
873
Classes inheriting from this can use the dbus_service_property
559
874
decorator to expose methods as D-Bus properties. It exposes the
560
875
standard Get(), Set(), and GetAll() methods on the D-Bus.
561
876
"""
562
877
563
878
@staticmethod
564
def _is_dbus_property(obj):
565
return getattr(obj, u"_dbus_is_property", False)
879
def _is_dbus_thing(thing):
880
"""Returns a function testing if an attribute is a D-Bus thing
881
882
If called like _is_dbus_thing("method") it returns a function
883
suitable for use as predicate to inspect.getmembers().
884
"""
885
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
886
False)
566
887
567
def _get_all_dbus_properties(self):
888
def _get_all_dbus_things(self, thing):
568
889
"""Returns a generator of (name, attribute) pairs
569
890
"""
570
return ((prop._dbus_name, prop)
571
for name, prop in
572
inspect.getmembers(self, self._is_dbus_property))
891
return ((getattr(athing.__get__(self), "_dbus_name",
892
name),
893
athing.__get__(self))
894
for cls in self.__class__.__mro__
895
for name, athing in
896
inspect.getmembers(cls,
897
self._is_dbus_thing(thing)))
573
898
574
899
def _get_dbus_property(self, interface_name, property_name):
575
900
"""Returns a bound method if one exists which is a D-Bus
576
901
property with the specified name and interface.
577
902
"""
578
for name in (property_name,
579
property_name + u"_dbus_property"):
580
prop = getattr(self, name, None)
581
if (prop is None
582
or not self._is_dbus_property(prop)
583
or prop._dbus_name != property_name
584
or (interface_name and prop._dbus_interface
585
and interface_name != prop._dbus_interface)):
586
continue
587
return prop
903
for cls in self.__class__.__mro__:
904
for name, value in (inspect.getmembers
905
(cls,
906
self._is_dbus_thing("property"))):
907
if (value._dbus_name == property_name
908
and value._dbus_interface == interface_name):
909
return value.__get__(self)
910
588
911
# No such property
589
raise DBusPropertyNotFound(self.dbus_object_path + u":"
590
+ interface_name + u"."
912
raise DBusPropertyNotFound(self.dbus_object_path + ":"
913
+ interface_name + "."
591
914
+ property_name)
592
915
593
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
594
out_signature=u"v")
916
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
917
out_signature="v")
595
918
def Get(self, interface_name, property_name):
596
919
"""Standard D-Bus property Get() method, see D-Bus standard.
597
920
"""
598
921
prop = self._get_dbus_property(interface_name, property_name)
599
if prop._dbus_access == u"write":
922
if prop._dbus_access == "write":
600
923
raise DBusPropertyAccessException(property_name)
601
924
value = prop()
602
if not hasattr(value, u"variant_level"):
925
if not hasattr(value, "variant_level"):
603
926
return value
604
927
return type(value)(value, variant_level=value.variant_level+1)
605
928
606
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
929
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
607
930
def Set(self, interface_name, property_name, value):
608
931
"""Standard D-Bus property Set() method, see D-Bus standard.
609
932
"""
610
933
prop = self._get_dbus_property(interface_name, property_name)
611
if prop._dbus_access == u"read":
934
if prop._dbus_access == "read":
612
935
raise DBusPropertyAccessException(property_name)
613
if prop._dbus_get_args_options[u"byte_arrays"]:
936
if prop._dbus_get_args_options["byte_arrays"]:
614
937
# The byte_arrays option is not supported yet on
615
938
# signatures other than "ay".
616
if prop._dbus_signature != u"ay":
617
raise ValueError
618
value = dbus.ByteArray(''.join(unichr(byte)
619
for byte in value))
939
if prop._dbus_signature != "ay":
940
raise ValueError("Byte arrays not supported for non-"
941
"'ay' signature {0!r}"
942
.format(prop._dbus_signature))
943
value = dbus.ByteArray(b''.join(chr(byte)
944
for byte in value))
620
945
prop(value)
621
946
622
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
623
out_signature=u"a{sv}")
947
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
948
out_signature="a{sv}")
624
949
def GetAll(self, interface_name):
625
950
"""Standard D-Bus property GetAll() method, see D-Bus
626
951
standard.
627
952
628
953
Note: Will not include properties with access="write".
629
954
"""
630
all = {}
631
for name, prop in self._get_all_dbus_properties():
955
properties = {}
956
for name, prop in self._get_all_dbus_things("property"):
632
957
if (interface_name
633
958
and interface_name != prop._dbus_interface):
634
959
# Interface non-empty but did not match
635
960
continue
636
961
# Ignore write-only properties
637
if prop._dbus_access == u"write":
962
if prop._dbus_access == "write":
638
963
continue
639
964
value = prop()
640
if not hasattr(value, u"variant_level"):
641
all[name] = value
965
if not hasattr(value, "variant_level"):
966
properties[name] = value
642
967
continue
643
all[name] = type(value)(value, variant_level=
644
value.variant_level+1)
645
return dbus.Dictionary(all, signature=u"sv")
968
properties[name] = type(value)(value, variant_level=
969
value.variant_level+1)
970
return dbus.Dictionary(properties, signature="sv")
646
971
647
972
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
648
out_signature=u"s",
973
out_signature="s",
649
974
path_keyword='object_path',
650
975
connection_keyword='connection')
651
976
def Introspect(self, object_path, connection):
652
"""Standard D-Bus method, overloaded to insert property tags.
977
"""Overloading of standard D-Bus method.
978
979
Inserts property tags and interface annotation tags.
653
980
"""
654
981
xmlstring = dbus.service.Object.Introspect(self, object_path,
655
982
connection)
656
983
try:
657
984
document = xml.dom.minidom.parseString(xmlstring)
658
985
def make_tag(document, name, prop):
659
e = document.createElement(u"property")
660
e.setAttribute(u"name", name)
661
e.setAttribute(u"type", prop._dbus_signature)
662
e.setAttribute(u"access", prop._dbus_access)
986
e = document.createElement("property")
987
e.setAttribute("name", name)
988
e.setAttribute("type", prop._dbus_signature)
989
e.setAttribute("access", prop._dbus_access)
663
990
return e
664
for if_tag in document.getElementsByTagName(u"interface"):
991
for if_tag in document.getElementsByTagName("interface"):
992
# Add property tags
665
993
for tag in (make_tag(document, name, prop)
666
994
for name, prop
667
in self._get_all_dbus_properties()
995
in self._get_all_dbus_things("property")
668
996
if prop._dbus_interface
669
== if_tag.getAttribute(u"name")):
997
== if_tag.getAttribute("name")):
670
998
if_tag.appendChild(tag)
999
# Add annotation tags
1000
for typ in ("method", "signal", "property"):
1001
for tag in if_tag.getElementsByTagName(typ):
1002
annots = dict()
1003
for name, prop in (self.
1004
_get_all_dbus_things(typ)):
1005
if (name == tag.getAttribute("name")
1006
and prop._dbus_interface
1007
== if_tag.getAttribute("name")):
1008
annots.update(getattr
1009
(prop,
1010
"_dbus_annotations",
1011
{}))
1012
for name, value in annots.iteritems():
1013
ann_tag = document.createElement(
1014
"annotation")
1015
ann_tag.setAttribute("name", name)
1016
ann_tag.setAttribute("value", value)
1017
tag.appendChild(ann_tag)
1018
# Add interface annotation tags
1019
for annotation, value in dict(
1020
itertools.chain.from_iterable(
1021
annotations().iteritems()
1022
for name, annotations in
1023
self._get_all_dbus_things("interface")
1024
if name == if_tag.getAttribute("name")
1025
)).iteritems():
1026
ann_tag = document.createElement("annotation")
1027
ann_tag.setAttribute("name", annotation)
1028
ann_tag.setAttribute("value", value)
1029
if_tag.appendChild(ann_tag)
671
1030
# Add the names to the return values for the
672
1031
# "org.freedesktop.DBus.Properties" methods
673
if (if_tag.getAttribute(u"name")
674
== u"org.freedesktop.DBus.Properties"):
675
for cn in if_tag.getElementsByTagName(u"method"):
676
if cn.getAttribute(u"name") == u"Get":
677
for arg in cn.getElementsByTagName(u"arg"):
678
if (arg.getAttribute(u"direction")
679
== u"out"):
680
arg.setAttribute(u"name", u"value")
681
elif cn.getAttribute(u"name") == u"GetAll":
682
for arg in cn.getElementsByTagName(u"arg"):
683
if (arg.getAttribute(u"direction")
684
== u"out"):
685
arg.setAttribute(u"name", u"props")
686
xmlstring = document.toxml(u"utf-8")
1032
if (if_tag.getAttribute("name")
1033
== "org.freedesktop.DBus.Properties"):
1034
for cn in if_tag.getElementsByTagName("method"):
1035
if cn.getAttribute("name") == "Get":
1036
for arg in cn.getElementsByTagName("arg"):
1037
if (arg.getAttribute("direction")
1038
== "out"):
1039
arg.setAttribute("name", "value")
1040
elif cn.getAttribute("name") == "GetAll":
1041
for arg in cn.getElementsByTagName("arg"):
1042
if (arg.getAttribute("direction")
1043
== "out"):
1044
arg.setAttribute("name", "props")
1045
xmlstring = document.toxml("utf-8")
687
1046
document.unlink()
688
1047
except (AttributeError, xml.dom.DOMException,
689
xml.parsers.expat.ExpatError), error:
690
logger.error(u"Failed to override Introspection method",
691
error)
1048
xml.parsers.expat.ExpatError) as error:
1049
logger.error("Failed to override Introspection method",
1050
exc_info=error)
692
1051
return xmlstring
693
1052
694
1053
1054
def datetime_to_dbus(dt, variant_level=0):
1055
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1056
if dt is None:
1057
return dbus.String("", variant_level = variant_level)
1058
return dbus.String(dt.isoformat(),
1059
variant_level=variant_level)
1060
1061
1062
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1063
"""A class decorator; applied to a subclass of
1064
dbus.service.Object, it will add alternate D-Bus attributes with
1065
interface names according to the "alt_interface_names" mapping.
1066
Usage:
1067
1068
@alternate_dbus_interfaces({"org.example.Interface":
1069
"net.example.AlternateInterface"})
1070
class SampleDBusObject(dbus.service.Object):
1071
@dbus.service.method("org.example.Interface")
1072
def SampleDBusMethod():
1073
pass
1074
1075
The above "SampleDBusMethod" on "SampleDBusObject" will be
1076
reachable via two interfaces: "org.example.Interface" and
1077
"net.example.AlternateInterface", the latter of which will have
1078
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1079
"true", unless "deprecate" is passed with a False value.
1080
1081
This works for methods and signals, and also for D-Bus properties
1082
(from DBusObjectWithProperties) and interfaces (from the
1083
dbus_interface_annotations decorator).
1084
"""
1085
def wrapper(cls):
1086
for orig_interface_name, alt_interface_name in (
1087
alt_interface_names.iteritems()):
1088
attr = {}
1089
interface_names = set()
1090
# Go though all attributes of the class
1091
for attrname, attribute in inspect.getmembers(cls):
1092
# Ignore non-D-Bus attributes, and D-Bus attributes
1093
# with the wrong interface name
1094
if (not hasattr(attribute, "_dbus_interface")
1095
or not attribute._dbus_interface
1096
.startswith(orig_interface_name)):
1097
continue
1098
# Create an alternate D-Bus interface name based on
1099
# the current name
1100
alt_interface = (attribute._dbus_interface
1101
.replace(orig_interface_name,
1102
alt_interface_name))
1103
interface_names.add(alt_interface)
1104
# Is this a D-Bus signal?
1105
if getattr(attribute, "_dbus_is_signal", False):
1106
# Extract the original non-method undecorated
1107
# function by black magic
1108
nonmethod_func = (dict(
1109
zip(attribute.func_code.co_freevars,
1110
attribute.__closure__))["func"]
1111
.cell_contents)
1112
# Create a new, but exactly alike, function
1113
# object, and decorate it to be a new D-Bus signal
1114
# with the alternate D-Bus interface name
1115
new_function = (dbus.service.signal
1116
(alt_interface,
1117
attribute._dbus_signature)
1118
(types.FunctionType(
1119
nonmethod_func.func_code,
1120
nonmethod_func.func_globals,
1121
nonmethod_func.func_name,
1122
nonmethod_func.func_defaults,
1123
nonmethod_func.func_closure)))
1124
# Copy annotations, if any
1125
try:
1126
new_function._dbus_annotations = (
1127
dict(attribute._dbus_annotations))
1128
except AttributeError:
1129
pass
1130
# Define a creator of a function to call both the
1131
# original and alternate functions, so both the
1132
# original and alternate signals gets sent when
1133
# the function is called
1134
def fixscope(func1, func2):
1135
"""This function is a scope container to pass
1136
func1 and func2 to the "call_both" function
1137
outside of its arguments"""
1138
def call_both(*args, **kwargs):
1139
"""This function will emit two D-Bus
1140
signals by calling func1 and func2"""
1141
func1(*args, **kwargs)
1142
func2(*args, **kwargs)
1143
return call_both
1144
# Create the "call_both" function and add it to
1145
# the class
1146
attr[attrname] = fixscope(attribute, new_function)
1147
# Is this a D-Bus method?
1148
elif getattr(attribute, "_dbus_is_method", False):
1149
# Create a new, but exactly alike, function
1150
# object. Decorate it to be a new D-Bus method
1151
# with the alternate D-Bus interface name. Add it
1152
# to the class.
1153
attr[attrname] = (dbus.service.method
1154
(alt_interface,
1155
attribute._dbus_in_signature,
1156
attribute._dbus_out_signature)
1157
(types.FunctionType
1158
(attribute.func_code,
1159
attribute.func_globals,
1160
attribute.func_name,
1161
attribute.func_defaults,
1162
attribute.func_closure)))
1163
# Copy annotations, if any
1164
try:
1165
attr[attrname]._dbus_annotations = (
1166
dict(attribute._dbus_annotations))
1167
except AttributeError:
1168
pass
1169
# Is this a D-Bus property?
1170
elif getattr(attribute, "_dbus_is_property", False):
1171
# Create a new, but exactly alike, function
1172
# object, and decorate it to be a new D-Bus
1173
# property with the alternate D-Bus interface
1174
# name. Add it to the class.
1175
attr[attrname] = (dbus_service_property
1176
(alt_interface,
1177
attribute._dbus_signature,
1178
attribute._dbus_access,
1179
attribute
1180
._dbus_get_args_options
1181
["byte_arrays"])
1182
(types.FunctionType
1183
(attribute.func_code,
1184
attribute.func_globals,
1185
attribute.func_name,
1186
attribute.func_defaults,
1187
attribute.func_closure)))
1188
# Copy annotations, if any
1189
try:
1190
attr[attrname]._dbus_annotations = (
1191
dict(attribute._dbus_annotations))
1192
except AttributeError:
1193
pass
1194
# Is this a D-Bus interface?
1195
elif getattr(attribute, "_dbus_is_interface", False):
1196
# Create a new, but exactly alike, function
1197
# object. Decorate it to be a new D-Bus interface
1198
# with the alternate D-Bus interface name. Add it
1199
# to the class.
1200
attr[attrname] = (dbus_interface_annotations
1201
(alt_interface)
1202
(types.FunctionType
1203
(attribute.func_code,
1204
attribute.func_globals,
1205
attribute.func_name,
1206
attribute.func_defaults,
1207
attribute.func_closure)))
1208
if deprecate:
1209
# Deprecate all alternate interfaces
1210
iname="_AlternateDBusNames_interface_annotation{0}"
1211
for interface_name in interface_names:
1212
@dbus_interface_annotations(interface_name)
1213
def func(self):
1214
return { "org.freedesktop.DBus.Deprecated":
1215
"true" }
1216
# Find an unused name
1217
for aname in (iname.format(i)
1218
for i in itertools.count()):
1219
if aname not in attr:
1220
attr[aname] = func
1221
break
1222
if interface_names:
1223
# Replace the class with a new subclass of it with
1224
# methods, signals, etc. as created above.
1225
cls = type(b"{0}Alternate".format(cls.__name__),
1226
(cls,), attr)
1227
return cls
1228
return wrapper
1229
1230
1231
@alternate_dbus_interfaces({"se.recompile.Mandos":
1232
"se.bsnet.fukt.Mandos"})
695
1233
class ClientDBus(Client, DBusObjectWithProperties):
696
1234
"""A Client class using D-Bus
697
1235
699
1237
dbus_object_path: dbus.ObjectPath
700
1238
bus: dbus.SystemBus()
701
1239
"""
1240
1241
runtime_expansions = (Client.runtime_expansions
1242
+ ("dbus_object_path",))
1243
702
1244
# dbus.service.Object doesn't use super(), so we can't either.
703
1245
704
1246
def __init__(self, bus = None, *args, **kwargs):
705
self._approvals_pending = 0
706
1247
self.bus = bus
707
1248
Client.__init__(self, *args, **kwargs)
708
1249
# Only now, when this client is initialized, can it show up on
709
1250
# the D-Bus
1251
client_object_name = unicode(self.name).translate(
1252
{ord("."): ord("_"),
1253
ord("-"): ord("_")})
710
1254
self.dbus_object_path = (dbus.ObjectPath
711
(u"/clients/"
712
+ self.name.replace(u".", u"_")))
1255
("/clients/" + client_object_name))
713
1256
DBusObjectWithProperties.__init__(self, self.bus,
714
1257
self.dbus_object_path)
715
1258
716
def _get_approvals_pending(value):
717
return self._approvals_pending
718
def _set_approvals_pending(value):
719
old_value = self._approvals_pending
720
self._approvals_pending = value
721
bval = bool(value)
722
if bval is bool(old_value):
723
dbus_bool = dbus.Boolean(bval, variant_level=1)
724
self.PropertyChanged(dbus.String(u"approved_pending"),
725
dbus_bool)
726
return value
727
approvals_pending = property(_get_approvals_pending,
728
_set_approvals_pending)
729
del _get_approvals_pending, _set_approvals_pending
730
731
@staticmethod
732
def _datetime_to_dbus(dt, variant_level=0):
733
"""Convert a UTC datetime.datetime() to a D-Bus type."""
734
return dbus.String(dt.isoformat(),
735
variant_level=variant_level)
736
737
def enable(self):
738
oldstate = getattr(self, u"enabled", False)
739
r = Client.enable(self)
740
if oldstate != self.enabled:
741
# Emit D-Bus signals
742
self.PropertyChanged(dbus.String(u"enabled"),
743
dbus.Boolean(True, variant_level=1))
744
self.PropertyChanged(
745
dbus.String(u"last_enabled"),
746
self._datetime_to_dbus(self.last_enabled,
747
variant_level=1))
748
return r
749
750
def disable(self, quiet = False):
751
oldstate = getattr(self, u"enabled", False)
752
r = Client.disable(self, quiet=quiet)
753
if not quiet and oldstate != self.enabled:
754
# Emit D-Bus signal
755
self.PropertyChanged(dbus.String(u"enabled"),
756
dbus.Boolean(False, variant_level=1))
757
return r
1259
def notifychangeproperty(transform_func,
1260
dbus_name, type_func=lambda x: x,
1261
variant_level=1):
1262
""" Modify a variable so that it's a property which announces
1263
its changes to DBus.
1264
1265
transform_fun: Function that takes a value and a variant_level
1266
and transforms it to a D-Bus type.
1267
dbus_name: D-Bus name of the variable
1268
type_func: Function that transform the value before sending it
1269
to the D-Bus. Default: no transform
1270
variant_level: D-Bus variant level. Default: 1
1271
"""
1272
attrname = "_{0}".format(dbus_name)
1273
def setter(self, value):
1274
if hasattr(self, "dbus_object_path"):
1275
if (not hasattr(self, attrname) or
1276
type_func(getattr(self, attrname, None))
1277
!= type_func(value)):
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
setattr(self, attrname, value)
1284
1285
return property(lambda self: getattr(self, attrname), setter)
1286
1287
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1288
approvals_pending = notifychangeproperty(dbus.Boolean,
1289
"ApprovalPending",
1290
type_func = bool)
1291
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1292
last_enabled = notifychangeproperty(datetime_to_dbus,
1293
"LastEnabled")
1294
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1295
type_func = lambda checker:
1296
checker is not None)
1297
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1298
"LastCheckedOK")
1299
last_checker_status = notifychangeproperty(dbus.Int16,
1300
"LastCheckerStatus")
1301
last_approval_request = notifychangeproperty(
1302
datetime_to_dbus, "LastApprovalRequest")
1303
approved_by_default = notifychangeproperty(dbus.Boolean,
1304
"ApprovedByDefault")
1305
approval_delay = notifychangeproperty(dbus.UInt64,
1306
"ApprovalDelay",
1307
type_func =
1308
timedelta_to_milliseconds)
1309
approval_duration = notifychangeproperty(
1310
dbus.UInt64, "ApprovalDuration",
1311
type_func = timedelta_to_milliseconds)
1312
host = notifychangeproperty(dbus.String, "Host")
1313
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1314
type_func =
1315
timedelta_to_milliseconds)
1316
extended_timeout = notifychangeproperty(
1317
dbus.UInt64, "ExtendedTimeout",
1318
type_func = timedelta_to_milliseconds)
1319
interval = notifychangeproperty(dbus.UInt64,
1320
"Interval",
1321
type_func =
1322
timedelta_to_milliseconds)
1323
checker_command = notifychangeproperty(dbus.String, "Checker")
1324
1325
del notifychangeproperty
758
1326
759
1327
def __del__(self, *args, **kwargs):
760
1328
try:
761
1329
self.remove_from_connection()
762
1330
except LookupError:
763
1331
pass
764
if hasattr(DBusObjectWithProperties, u"__del__"):
1332
if hasattr(DBusObjectWithProperties, "__del__"):
765
1333
DBusObjectWithProperties.__del__(self, *args, **kwargs)
766
1334
Client.__del__(self, *args, **kwargs)
767
1335
769
1337
*args, **kwargs):
770
1338
self.checker_callback_tag = None
771
1339
self.checker = None
772
# Emit D-Bus signal
773
self.PropertyChanged(dbus.String(u"checker_running"),
774
dbus.Boolean(False, variant_level=1))
775
1340
if os.WIFEXITED(condition):
776
1341
exitstatus = os.WEXITSTATUS(condition)
777
1342
# Emit D-Bus signal
787
1352
return Client.checker_callback(self, pid, condition, command,
788
1353
*args, **kwargs)
789
1354
790
def checked_ok(self, *args, **kwargs):
791
r = Client.checked_ok(self, *args, **kwargs)
792
# Emit D-Bus signal
793
self.PropertyChanged(
794
dbus.String(u"last_checked_ok"),
795
(self._datetime_to_dbus(self.last_checked_ok,
796
variant_level=1)))
797
return r
798
799
1355
def start_checker(self, *args, **kwargs):
800
old_checker = self.checker
801
if self.checker is not None:
802
old_checker_pid = self.checker.pid
803
else:
804
old_checker_pid = None
1356
old_checker_pid = getattr(self.checker, "pid", None)
805
1357
r = Client.start_checker(self, *args, **kwargs)
806
1358
# Only if new checker process was started
807
1359
if (self.checker is not None
808
1360
and old_checker_pid != self.checker.pid):
809
1361
# Emit D-Bus signal
810
1362
self.CheckerStarted(self.current_checker_command)
811
self.PropertyChanged(
812
dbus.String(u"checker_running"),
813
dbus.Boolean(True, variant_level=1))
814
1363
return r
815
1364
816
def stop_checker(self, *args, **kwargs):
817
old_checker = getattr(self, u"checker", None)
818
r = Client.stop_checker(self, *args, **kwargs)
819
if (old_checker is not None
820
and getattr(self, u"checker", None) is None):
821
self.PropertyChanged(dbus.String(u"checker_running"),
822
dbus.Boolean(False, variant_level=1))
823
return r
824
825
1365
def _reset_approved(self):
826
self._approved = None
1366
self.approved = None
827
1367
return False
828
1368
829
1369
def approve(self, value=True):
830
self._approved = value
831
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration, self._reset_approved))
832
1370
self.approved = value
1371
gobject.timeout_add(timedelta_to_milliseconds
1372
(self.approval_duration),
1373
self._reset_approved)
1374
self.send_changedstate()
833
1375
834
1376
## D-Bus methods, signals & properties
835
_interface = u"se.bsnet.fukt.Mandos.Client"
1377
_interface = "se.recompile.Mandos.Client"
1378
1379
## Interfaces
1380
1381
@dbus_interface_annotations(_interface)
1382
def _foo(self):
1383
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1384
"false"}
836
1385
837
1386
## Signals
838
1387
839
1388
# CheckerCompleted - signal
840
@dbus.service.signal(_interface, signature=u"nxs")
1389
@dbus.service.signal(_interface, signature="nxs")
841
1390
def CheckerCompleted(self, exitcode, waitstatus, command):
842
1391
"D-Bus signal"
843
1392
pass
844
1393
845
1394
# CheckerStarted - signal
846
@dbus.service.signal(_interface, signature=u"s")
1395
@dbus.service.signal(_interface, signature="s")
847
1396
def CheckerStarted(self, command):
848
1397
"D-Bus signal"
849
1398
pass
850
1399
851
1400
# PropertyChanged - signal
852
@dbus.service.signal(_interface, signature=u"sv")
1401
@dbus.service.signal(_interface, signature="sv")
853
1402
def PropertyChanged(self, property, value):
854
1403
"D-Bus signal"
855
1404
pass
857
1406
# GotSecret - signal
858
1407
@dbus.service.signal(_interface)
859
1408
def GotSecret(self):
860
"D-Bus signal"
1409
"""D-Bus signal
1410
Is sent after a successful transfer of secret from the Mandos
1411
server to mandos-client
1412
"""
861
1413
pass
862
1414
863
1415
# Rejected - signal
864
@dbus.service.signal(_interface, signature=u"s")
1416
@dbus.service.signal(_interface, signature="s")
865
1417
def Rejected(self, reason):
866
1418
"D-Bus signal"
867
1419
pass
868
1420
869
1421
# NeedApproval - signal
870
@dbus.service.signal(_interface, signature=u"db")
1422
@dbus.service.signal(_interface, signature="tb")
871
1423
def NeedApproval(self, timeout, default):
872
1424
"D-Bus signal"
873
pass
1425
return self.need_approval()
874
1426
875
1427
## Methods
876
1428
877
1429
# Approve - method
878
@dbus.service.method(_interface, in_signature=u"b")
1430
@dbus.service.method(_interface, in_signature="b")
879
1431
def Approve(self, value):
880
1432
self.approve(value)
881
1433
882
1434
# CheckedOK - method
883
1435
@dbus.service.method(_interface)
884
1436
def CheckedOK(self):
885
return self.checked_ok()
1437
self.checked_ok()
886
1438
887
1439
# Enable - method
888
1440
@dbus.service.method(_interface)
909
1461
910
1462
## Properties
911
1463
912
# approved_pending - property
913
@dbus_service_property(_interface, signature=u"b", access=u"read")
914
def approved_pending_dbus_property(self):
1464
# ApprovalPending - property
1465
@dbus_service_property(_interface, signature="b", access="read")
1466
def ApprovalPending_dbus_property(self):
915
1467
return dbus.Boolean(bool(self.approvals_pending))
916
1468
917
# approved_by_default - property
918
@dbus_service_property(_interface, signature=u"b",
919
access=u"readwrite")
920
def approved_by_default_dbus_property(self):
921
return dbus.Boolean(self.approved_by_default)
922
923
# approved_delay - property
924
@dbus_service_property(_interface, signature=u"t",
925
access=u"readwrite")
926
def approved_delay_dbus_property(self):
927
return dbus.UInt64(self.approved_delay_milliseconds())
928
929
# approved_duration - property
930
@dbus_service_property(_interface, signature=u"t",
931
access=u"readwrite")
932
def approved_duration_dbus_property(self):
933
return dbus.UInt64(self._timedelta_to_milliseconds(
934
self.approved_duration))
935
936
# name - property
937
@dbus_service_property(_interface, signature=u"s", access=u"read")
938
def name_dbus_property(self):
1469
# ApprovedByDefault - property
1470
@dbus_service_property(_interface, signature="b",
1471
access="readwrite")
1472
def ApprovedByDefault_dbus_property(self, value=None):
1473
if value is None: # get
1474
return dbus.Boolean(self.approved_by_default)
1475
self.approved_by_default = bool(value)
1476
1477
# ApprovalDelay - property
1478
@dbus_service_property(_interface, signature="t",
1479
access="readwrite")
1480
def ApprovalDelay_dbus_property(self, value=None):
1481
if value is None: # get
1482
return dbus.UInt64(self.approval_delay_milliseconds())
1483
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1484
1485
# ApprovalDuration - property
1486
@dbus_service_property(_interface, signature="t",
1487
access="readwrite")
1488
def ApprovalDuration_dbus_property(self, value=None):
1489
if value is None: # get
1490
return dbus.UInt64(timedelta_to_milliseconds(
1491
self.approval_duration))
1492
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1493
1494
# Name - property
1495
@dbus_service_property(_interface, signature="s", access="read")
1496
def Name_dbus_property(self):
939
1497
return dbus.String(self.name)
940
1498
941
# fingerprint - property
942
@dbus_service_property(_interface, signature=u"s", access=u"read")
943
def fingerprint_dbus_property(self):
1499
# Fingerprint - property
1500
@dbus_service_property(_interface, signature="s", access="read")
1501
def Fingerprint_dbus_property(self):
944
1502
return dbus.String(self.fingerprint)
945
1503
946
# host - property
947
@dbus_service_property(_interface, signature=u"s",
948
access=u"readwrite")
949
def host_dbus_property(self, value=None):
1504
# Host - property
1505
@dbus_service_property(_interface, signature="s",
1506
access="readwrite")
1507
def Host_dbus_property(self, value=None):
950
1508
if value is None: # get
951
1509
return dbus.String(self.host)
952
self.host = value
953
# Emit D-Bus signal
954
self.PropertyChanged(dbus.String(u"host"),
955
dbus.String(value, variant_level=1))
956
957
# created - property
958
@dbus_service_property(_interface, signature=u"s", access=u"read")
959
def created_dbus_property(self):
960
return dbus.String(self._datetime_to_dbus(self.created))
961
962
# last_enabled - property
963
@dbus_service_property(_interface, signature=u"s", access=u"read")
964
def last_enabled_dbus_property(self):
965
if self.last_enabled is None:
966
return dbus.String(u"")
967
return dbus.String(self._datetime_to_dbus(self.last_enabled))
968
969
# enabled - property
970
@dbus_service_property(_interface, signature=u"b",
971
access=u"readwrite")
972
def enabled_dbus_property(self, value=None):
1510
self.host = unicode(value)
1511
1512
# Created - property
1513
@dbus_service_property(_interface, signature="s", access="read")
1514
def Created_dbus_property(self):
1515
return datetime_to_dbus(self.created)
1516
1517
# LastEnabled - property
1518
@dbus_service_property(_interface, signature="s", access="read")
1519
def LastEnabled_dbus_property(self):
1520
return datetime_to_dbus(self.last_enabled)
1521
1522
# Enabled - property
1523
@dbus_service_property(_interface, signature="b",
1524
access="readwrite")
1525
def Enabled_dbus_property(self, value=None):
973
1526
if value is None: # get
974
1527
return dbus.Boolean(self.enabled)
975
1528
if value:
977
1530
else:
978
1531
self.disable()
979
1532
980
# last_checked_ok - property
981
@dbus_service_property(_interface, signature=u"s",
982
access=u"readwrite")
983
def last_checked_ok_dbus_property(self, value=None):
1533
# LastCheckedOK - property
1534
@dbus_service_property(_interface, signature="s",
1535
access="readwrite")
1536
def LastCheckedOK_dbus_property(self, value=None):
984
1537
if value is not None:
985
1538
self.checked_ok()
986
1539
return
987
if self.last_checked_ok is None:
988
return dbus.String(u"")
989
return dbus.String(self._datetime_to_dbus(self
990
.last_checked_ok))
991
992
# timeout - property
993
@dbus_service_property(_interface, signature=u"t",
994
access=u"readwrite")
995
def timeout_dbus_property(self, value=None):
1540
return datetime_to_dbus(self.last_checked_ok)
1541
1542
# LastCheckerStatus - property
1543
@dbus_service_property(_interface, signature="n",
1544
access="read")
1545
def LastCheckerStatus_dbus_property(self):
1546
return dbus.Int16(self.last_checker_status)
1547
1548
# Expires - property
1549
@dbus_service_property(_interface, signature="s", access="read")
1550
def Expires_dbus_property(self):
1551
return datetime_to_dbus(self.expires)
1552
1553
# LastApprovalRequest - property
1554
@dbus_service_property(_interface, signature="s", access="read")
1555
def LastApprovalRequest_dbus_property(self):
1556
return datetime_to_dbus(self.last_approval_request)
1557
1558
# Timeout - property
1559
@dbus_service_property(_interface, signature="t",
1560
access="readwrite")
1561
def Timeout_dbus_property(self, value=None):
996
1562
if value is None: # get
997
1563
return dbus.UInt64(self.timeout_milliseconds())
1564
old_timeout = self.timeout
998
1565
self.timeout = datetime.timedelta(0, 0, 0, value)
999
# Emit D-Bus signal
1000
self.PropertyChanged(dbus.String(u"timeout"),
1001
dbus.UInt64(value, variant_level=1))
1002
if getattr(self, u"disable_initiator_tag", None) is None:
1003
return
1004
# Reschedule timeout
1005
gobject.source_remove(self.disable_initiator_tag)
1006
self.disable_initiator_tag = None
1007
time_to_die = (self.
1008
_timedelta_to_milliseconds((self
1009
.last_checked_ok
1010
+ self.timeout)
1011
- datetime.datetime
1012
.utcnow()))
1013
if time_to_die <= 0:
1014
# The timeout has passed
1015
self.disable()
1016
else:
1017
self.disable_initiator_tag = (gobject.timeout_add
1018
(time_to_die, self.disable))
1019
1020
# interval - property
1021
@dbus_service_property(_interface, signature=u"t",
1022
access=u"readwrite")
1023
def interval_dbus_property(self, value=None):
1566
# Reschedule disabling
1567
if self.enabled:
1568
now = datetime.datetime.utcnow()
1569
self.expires += self.timeout - old_timeout
1570
if self.expires <= now:
1571
# The timeout has passed
1572
self.disable()
1573
else:
1574
if (getattr(self, "disable_initiator_tag", None)
1575
is None):
1576
return
1577
gobject.source_remove(self.disable_initiator_tag)
1578
self.disable_initiator_tag = (
1579
gobject.timeout_add(
1580
timedelta_to_milliseconds(self.expires - now),
1581
self.disable))
1582
1583
# ExtendedTimeout - property
1584
@dbus_service_property(_interface, signature="t",
1585
access="readwrite")
1586
def ExtendedTimeout_dbus_property(self, value=None):
1587
if value is None: # get
1588
return dbus.UInt64(self.extended_timeout_milliseconds())
1589
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1590
1591
# Interval - property
1592
@dbus_service_property(_interface, signature="t",
1593
access="readwrite")
1594
def Interval_dbus_property(self, value=None):
1024
1595
if value is None: # get
1025
1596
return dbus.UInt64(self.interval_milliseconds())
1026
1597
self.interval = datetime.timedelta(0, 0, 0, value)
1027
# Emit D-Bus signal
1028
self.PropertyChanged(dbus.String(u"interval"),
1029
dbus.UInt64(value, variant_level=1))
1030
if getattr(self, u"checker_initiator_tag", None) is None:
1598
if getattr(self, "checker_initiator_tag", None) is None:
1031
1599
return
1032
# Reschedule checker run
1033
gobject.source_remove(self.checker_initiator_tag)
1034
self.checker_initiator_tag = (gobject.timeout_add
1035
(value, self.start_checker))
1036
self.start_checker() # Start one now, too
1037
1038
# checker - property
1039
@dbus_service_property(_interface, signature=u"s",
1040
access=u"readwrite")
1041
def checker_dbus_property(self, value=None):
1600
if self.enabled:
1601
# Reschedule checker run
1602
gobject.source_remove(self.checker_initiator_tag)
1603
self.checker_initiator_tag = (gobject.timeout_add
1604
(value, self.start_checker))
1605
self.start_checker() # Start one now, too
1606
1607
# Checker - property
1608
@dbus_service_property(_interface, signature="s",
1609
access="readwrite")
1610
def Checker_dbus_property(self, value=None):
1042
1611
if value is None: # get
1043
1612
return dbus.String(self.checker_command)
1044
self.checker_command = value
1045
# Emit D-Bus signal
1046
self.PropertyChanged(dbus.String(u"checker"),
1047
dbus.String(self.checker_command,
1048
variant_level=1))
1613
self.checker_command = unicode(value)
1049
1614
1050
# checker_running - property
1051
@dbus_service_property(_interface, signature=u"b",
1052
access=u"readwrite")
1053
def checker_running_dbus_property(self, value=None):
1615
# CheckerRunning - property
1616
@dbus_service_property(_interface, signature="b",
1617
access="readwrite")
1618
def CheckerRunning_dbus_property(self, value=None):
1054
1619
if value is None: # get
1055
1620
return dbus.Boolean(self.checker is not None)
1056
1621
if value:
1058
1623
else:
1059
1624
self.stop_checker()
1060
1625
1061
# object_path - property
1062
@dbus_service_property(_interface, signature=u"o", access=u"read")
1063
def object_path_dbus_property(self):
1626
# ObjectPath - property
1627
@dbus_service_property(_interface, signature="o", access="read")
1628
def ObjectPath_dbus_property(self):
1064
1629
return self.dbus_object_path # is already a dbus.ObjectPath
1065
1630
1066
# secret = property
1067
@dbus_service_property(_interface, signature=u"ay",
1068
access=u"write", byte_arrays=True)
1069
def secret_dbus_property(self, value):
1631
# Secret = property
1632
@dbus_service_property(_interface, signature="ay",
1633
access="write", byte_arrays=True)
1634
def Secret_dbus_property(self, value):
1070
1635
self.secret = str(value)
1071
1636
1072
1637
del _interface
1078
1643
self._pipe.send(('init', fpr, address))
1079
1644
if not self._pipe.recv():
1080
1645
raise KeyError()
1081
1646
1082
1647
def __getattribute__(self, name):
1083
if(name == '_pipe'):
1648
if name == '_pipe':
1084
1649
return super(ProxyClient, self).__getattribute__(name)
1085
1650
self._pipe.send(('getattr', name))
1086
1651
data = self._pipe.recv()
1091
1656
self._pipe.send(('funcall', name, args, kwargs))
1092
1657
return self._pipe.recv()[1]
1093
1658
return func
1094
1659
1095
1660
def __setattr__(self, name, value):
1096
if(name == '_pipe'):
1661
if name == '_pipe':
1097
1662
return super(ProxyClient, self).__setattr__(name, value)
1098
1663
self._pipe.send(('setattr', name, value))
1099
1664
1106
1671
1107
1672
def handle(self):
1108
1673
with contextlib.closing(self.server.child_pipe) as child_pipe:
1109
logger.info(u"TCP connection from: %s",
1674
logger.info("TCP connection from: %s",
1110
1675
unicode(self.client_address))
1111
logger.debug(u"Pipe FD: %d",
1676
logger.debug("Pipe FD: %d",
1112
1677
self.server.child_pipe.fileno())
1113
1678
1114
1679
session = (gnutls.connection
1115
1680
.ClientSession(self.request,
1116
1681
gnutls.connection
1117
1682
.X509Credentials()))
1118
1683
1119
1684
# Note: gnutls.connection.X509Credentials is really a
1120
1685
# generic GnuTLS certificate credentials object so long as
1121
1686
# no X.509 keys are added to it. Therefore, we can use it
1122
1687
# here despite using OpenPGP certificates.
1123
1124
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1125
# u"+AES-256-CBC", u"+SHA1",
1126
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1127
# u"+DHE-DSS"))
1688
1689
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1690
# "+AES-256-CBC", "+SHA1",
1691
# "+COMP-NULL", "+CTYPE-OPENPGP",
1692
# "+DHE-DSS"))
1128
1693
# Use a fallback default, since this MUST be set.
1129
1694
priority = self.server.gnutls_priority
1130
1695
if priority is None:
1131
priority = u"NORMAL"
1696
priority = "NORMAL"
1132
1697
(gnutls.library.functions
1133
1698
.gnutls_priority_set_direct(session._c_object,
1134
1699
priority, None))
1135
1700
1136
1701
# Start communication using the Mandos protocol
1137
1702
# Get protocol number
1138
1703
line = self.request.makefile().readline()
1139
logger.debug(u"Protocol version: %r", line)
1704
logger.debug("Protocol version: %r", line)
1140
1705
try:
1141
1706
if int(line.strip().split()[0]) > 1:
1142
raise RuntimeError
1143
except (ValueError, IndexError, RuntimeError), error:
1144
logger.error(u"Unknown protocol version: %s", error)
1707
raise RuntimeError(line)
1708
except (ValueError, IndexError, RuntimeError) as error:
1709
logger.error("Unknown protocol version: %s", error)
1145
1710
return
1146
1711
1147
1712
# Start GnuTLS connection
1148
1713
try:
1149
1714
session.handshake()
1150
except gnutls.errors.GNUTLSError, error:
1151
logger.warning(u"Handshake failed: %s", error)
1715
except gnutls.errors.GNUTLSError as error:
1716
logger.warning("Handshake failed: %s", error)
1152
1717
# Do not run session.bye() here: the session is not
1153
1718
# established. Just abandon the request.
1154
1719
return
1155
logger.debug(u"Handshake succeeded")
1156
1720
logger.debug("Handshake succeeded")
1721
1157
1722
approval_required = False
1158
1723
try:
1159
1724
try:
1160
1725
fpr = self.fingerprint(self.peer_certificate
1161
1726
(session))
1162
except (TypeError, gnutls.errors.GNUTLSError), error:
1163
logger.warning(u"Bad certificate: %s", error)
1727
except (TypeError,
1728
gnutls.errors.GNUTLSError) as error:
1729
logger.warning("Bad certificate: %s", error)
1164
1730
return
1165
logger.debug(u"Fingerprint: %s", fpr)
1166
1731
logger.debug("Fingerprint: %s", fpr)
1732
1167
1733
try:
1168
1734
client = ProxyClient(child_pipe, fpr,
1169
1735
self.client_address)
1170
1736
except KeyError:
1171
1737
return
1172
1738
1173
if client.approved_delay:
1174
delay = client.approved_delay
1739
if client.approval_delay:
1740
delay = client.approval_delay
1175
1741
client.approvals_pending += 1
1176
1742
approval_required = True
1177
1743
1178
1744
while True:
1179
1745
if not client.enabled:
1180
logger.warning(u"Client %s is disabled",
1746
logger.info("Client %s is disabled",
1181
1747
client.name)
1182
1748
if self.server.use_dbus:
1183
1749
# Emit D-Bus signal
1184
client.Rejected("Disabled")
1750
client.Rejected("Disabled")
1185
1751
return
1186
1752
1187
if client._approved or not client.approved_delay:
1753
if client.approved or not client.approval_delay:
1188
1754
#We are approved or approval is disabled
1189
1755
break
1190
elif client._approved is None:
1191
logger.info(u"Client %s need approval",
1756
elif client.approved is None:
1757
logger.info("Client %s needs approval",
1192
1758
client.name)
1193
1759
if self.server.use_dbus:
1194
1760
# Emit D-Bus signal
1195
1761
client.NeedApproval(
1196
client.approved_delay_milliseconds(),
1762
client.approval_delay_milliseconds(),
1197
1763
client.approved_by_default)
1198
1764
else:
1199
logger.warning(u"Client %s was not approved",
1765
logger.warning("Client %s was not approved",
1200
1766
client.name)
1201
1767
if self.server.use_dbus:
1202
1768
# Emit D-Bus signal
1203
client.Rejected("Disapproved")
1769
client.Rejected("Denied")
1204
1770
return
1205
1771
1206
1772
#wait until timeout or approved
1207
#x = float(client._timedelta_to_milliseconds(delay))
1208
1773
time = datetime.datetime.now()
1209
1774
client.changedstate.acquire()
1210
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1775
client.changedstate.wait(
1776
float(timedelta_to_milliseconds(delay)
1777
/ 1000))
1211
1778
client.changedstate.release()
1212
1779
time2 = datetime.datetime.now()
1213
1780
if (time2 - time) >= delay:
1217
1784
client.name)
1218
1785
if self.server.use_dbus:
1219
1786
# Emit D-Bus signal
1220
client.Rejected("Time out")
1787
client.Rejected("Approval timed out")
1221
1788
return
1222
1789
else:
1223
1790
break
1226
1793
1227
1794
sent_size = 0
1228
1795
while sent_size < len(client.secret):
1229
# XXX handle session exception
1230
sent = session.send(client.secret[sent_size:])
1231
logger.debug(u"Sent: %d, remaining: %d",
1796
try:
1797
sent = session.send(client.secret[sent_size:])
1798
except gnutls.errors.GNUTLSError as error:
1799
logger.warning("gnutls send failed",
1800
exc_info=error)
1801
return
1802
logger.debug("Sent: %d, remaining: %d",
1232
1803
sent, len(client.secret)
1233
1804
- (sent_size + sent))
1234
1805
sent_size += sent
1235
1236
logger.info(u"Sending secret to %s", client.name)
1237
# bump the timeout as if seen
1238
client.checked_ok()
1806
1807
logger.info("Sending secret to %s", client.name)
1808
# bump the timeout using extended_timeout
1809
client.bump_timeout(client.extended_timeout)
1239
1810
if self.server.use_dbus:
1240
1811
# Emit D-Bus signal
1241
1812
client.GotSecret()
1243
1814
finally:
1244
1815
if approval_required:
1245
1816
client.approvals_pending -= 1
1246
session.bye()
1817
try:
1818
session.bye()
1819
except gnutls.errors.GNUTLSError as error:
1820
logger.warning("GnuTLS bye failed",
1821
exc_info=error)
1247
1822
1248
1823
@staticmethod
1249
1824
def peer_certificate(session):
1259
1834
.gnutls_certificate_get_peers
1260
1835
(session._c_object, ctypes.byref(list_size)))
1261
1836
if not bool(cert_list) and list_size.value != 0:
1262
raise gnutls.errors.GNUTLSError(u"error getting peer"
1263
u" certificate")
1837
raise gnutls.errors.GNUTLSError("error getting peer"
1838
" certificate")
1264
1839
if list_size.value == 0:
1265
1840
return None
1266
1841
cert = cert_list[0]
1292
1867
if crtverify.value != 0:
1293
1868
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1294
1869
raise (gnutls.errors.CertificateSecurityError
1295
(u"Verify failed"))
1870
("Verify failed"))
1296
1871
# New buffer for the fingerprint
1297
1872
buf = ctypes.create_string_buffer(20)
1298
1873
buf_len = ctypes.c_size_t()
1305
1880
# Convert the buffer to a Python bytestring
1306
1881
fpr = ctypes.string_at(buf, buf_len.value)
1307
1882
# Convert the bytestring to hexadecimal notation
1308
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1883
hex_fpr = binascii.hexlify(fpr).upper()
1309
1884
return hex_fpr
1310
1885
1311
1886
1314
1889
def sub_process_main(self, request, address):
1315
1890
try:
1316
1891
self.finish_request(request, address)
1317
except:
1892
except Exception:
1318
1893
self.handle_error(request, address)
1319
1894
self.close_request(request)
1320
1895
1321
1896
def process_request(self, request, address):
1322
1897
"""Start a new process to process the request."""
1323
multiprocessing.Process(target = self.sub_process_main,
1324
args = (request, address)).start()
1898
proc = multiprocessing.Process(target = self.sub_process_main,
1899
args = (request, address))
1900
proc.start()
1901
return proc
1902
1325
1903
1326
1904
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1327
1905
""" adds a pipe to the MixIn """
1331
1909
This function creates a new pipe in self.pipe
1332
1910
"""
1333
1911
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1334
1335
super(MultiprocessingMixInWithPipe,
1336
self).process_request(request, client_address)
1337
self.add_pipe(parent_pipe)
1338
def add_pipe(self, parent_pipe):
1912
1913
proc = MultiprocessingMixIn.process_request(self, request,
1914
client_address)
1915
self.child_pipe.close()
1916
self.add_pipe(parent_pipe, proc)
1917
1918
def add_pipe(self, parent_pipe, proc):
1339
1919
"""Dummy function; override as necessary"""
1340
pass
1920
raise NotImplementedError()
1921
1341
1922
1342
1923
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1343
1924
socketserver.TCPServer, object):
1349
1930
use_ipv6: Boolean; to use IPv6 or not
1350
1931
"""
1351
1932
def __init__(self, server_address, RequestHandlerClass,
1352
interface=None, use_ipv6=True):
1933
interface=None, use_ipv6=True, socketfd=None):
1934
"""If socketfd is set, use that file descriptor instead of
1935
creating a new one with socket.socket().
1936
"""
1353
1937
self.interface = interface
1354
1938
if use_ipv6:
1355
1939
self.address_family = socket.AF_INET6
1940
if socketfd is not None:
1941
# Save the file descriptor
1942
self.socketfd = socketfd
1943
# Save the original socket.socket() function
1944
self.socket_socket = socket.socket
1945
# To implement --socket, we monkey patch socket.socket.
1946
#
1947
# (When socketserver.TCPServer is a new-style class, we
1948
# could make self.socket into a property instead of monkey
1949
# patching socket.socket.)
1950
#
1951
# Create a one-time-only replacement for socket.socket()
1952
@functools.wraps(socket.socket)
1953
def socket_wrapper(*args, **kwargs):
1954
# Restore original function so subsequent calls are
1955
# not affected.
1956
socket.socket = self.socket_socket
1957
del self.socket_socket
1958
# This time only, return a new socket object from the
1959
# saved file descriptor.
1960
return socket.fromfd(self.socketfd, *args, **kwargs)
1961
# Replace socket.socket() function with wrapper
1962
socket.socket = socket_wrapper
1963
# The socketserver.TCPServer.__init__ will call
1964
# socket.socket(), which might be our replacement,
1965
# socket_wrapper(), if socketfd was set.
1356
1966
socketserver.TCPServer.__init__(self, server_address,
1357
1967
RequestHandlerClass)
1968
1358
1969
def server_bind(self):
1359
1970
"""This overrides the normal server_bind() function
1360
1971
to bind to an interface if one was specified, and also NOT to
1361
1972
bind to an address or port if they were not specified."""
1362
1973
if self.interface is not None:
1363
1974
if SO_BINDTODEVICE is None:
1364
logger.error(u"SO_BINDTODEVICE does not exist;"
1365
u" cannot bind to interface %s",
1975
logger.error("SO_BINDTODEVICE does not exist;"
1976
" cannot bind to interface %s",
1366
1977
self.interface)
1367
1978
else:
1368
1979
try:
1369
1980
self.socket.setsockopt(socket.SOL_SOCKET,
1370
1981
SO_BINDTODEVICE,
1371
str(self.interface
1372
+ u'\0'))
1373
except socket.error, error:
1374
if error[0] == errno.EPERM:
1375
logger.error(u"No permission to"
1376
u" bind to interface %s",
1377
self.interface)
1378
elif error[0] == errno.ENOPROTOOPT:
1379
logger.error(u"SO_BINDTODEVICE not available;"
1380
u" cannot bind to interface %s",
1381
self.interface)
1982
str(self.interface + '\0'))
1983
except socket.error as error:
1984
if error.errno == errno.EPERM:
1985
logger.error("No permission to bind to"
1986
" interface %s", self.interface)
1987
elif error.errno == errno.ENOPROTOOPT:
1988
logger.error("SO_BINDTODEVICE not available;"
1989
" cannot bind to interface %s",
1990
self.interface)
1991
elif error.errno == errno.ENODEV:
1992
logger.error("Interface %s does not exist,"
1993
" cannot bind", self.interface)
1382
1994
else:
1383
1995
raise
1384
1996
# Only bind(2) the socket if we really need to.
1385
1997
if self.server_address[0] or self.server_address[1]:
1386
1998
if not self.server_address[0]:
1387
1999
if self.address_family == socket.AF_INET6:
1388
any_address = u"::" # in6addr_any
2000
any_address = "::" # in6addr_any
1389
2001
else:
1390
any_address = socket.INADDR_ANY
2002
any_address = "0.0.0.0" # INADDR_ANY
1391
2003
self.server_address = (any_address,
1392
2004
self.server_address[1])
1393
2005
elif not self.server_address[1]:
1414
2026
"""
1415
2027
def __init__(self, server_address, RequestHandlerClass,
1416
2028
interface=None, use_ipv6=True, clients=None,
1417
gnutls_priority=None, use_dbus=True):
2029
gnutls_priority=None, use_dbus=True, socketfd=None):
1418
2030
self.enabled = False
1419
2031
self.clients = clients
1420
2032
if self.clients is None:
1421
self.clients = set()
2033
self.clients = {}
1422
2034
self.use_dbus = use_dbus
1423
2035
self.gnutls_priority = gnutls_priority
1424
2036
IPv6_TCPServer.__init__(self, server_address,
1425
2037
RequestHandlerClass,
1426
2038
interface = interface,
1427
use_ipv6 = use_ipv6)
2039
use_ipv6 = use_ipv6,
2040
socketfd = socketfd)
1428
2041
def server_activate(self):
1429
2042
if self.enabled:
1430
2043
return socketserver.TCPServer.server_activate(self)
2044
1431
2045
def enable(self):
1432
2046
self.enabled = True
1433
def add_pipe(self, parent_pipe):
2047
2048
def add_pipe(self, parent_pipe, proc):
1434
2049
# Call "handle_ipc" for both data and EOF events
1435
2050
gobject.io_add_watch(parent_pipe.fileno(),
1436
2051
gobject.IO_IN | gobject.IO_HUP,
1437
2052
functools.partial(self.handle_ipc,
1438
parent_pipe = parent_pipe))
1439
2053
parent_pipe =
2054
parent_pipe,
2055
proc = proc))
2056
1440
2057
def handle_ipc(self, source, condition, parent_pipe=None,
1441
client_object=None):
1442
condition_names = {
1443
gobject.IO_IN: u"IN", # There is data to read.
1444
gobject.IO_OUT: u"OUT", # Data can be written (without
1445
# blocking).
1446
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1447
gobject.IO_ERR: u"ERR", # Error condition.
1448
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1449
# broken, usually for pipes and
1450
# sockets).
1451
}
1452
conditions_string = ' | '.join(name
1453
for cond, name in
1454
condition_names.iteritems()
1455
if cond & condition)
1456
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1457
conditions_string)
2058
proc = None, client_object=None):
2059
# error, or the other end of multiprocessing.Pipe has closed
2060
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2061
# Wait for other process to exit
2062
proc.join()
2063
return False
1458
2064
1459
2065
# Read a request from the child
1460
2066
request = parent_pipe.recv()
1464
2070
fpr = request[1]
1465
2071
address = request[2]
1466
2072
1467
for c in self.clients:
2073
for c in self.clients.itervalues():
1468
2074
if c.fingerprint == fpr:
1469
2075
client = c
1470
2076
break
1471
2077
else:
1472
logger.warning(u"Client not found for fingerprint: %s, ad"
1473
u"dress: %s", fpr, address)
2078
logger.info("Client not found for fingerprint: %s, ad"
2079
"dress: %s", fpr, address)
1474
2080
if self.use_dbus:
1475
2081
# Emit D-Bus signal
1476
mandos_dbus_service.ClientNotFound(fpr, address)
2082
mandos_dbus_service.ClientNotFound(fpr,
2083
address[0])
1477
2084
parent_pipe.send(False)
1478
2085
return False
1479
2086
1480
2087
gobject.io_add_watch(parent_pipe.fileno(),
1481
2088
gobject.IO_IN | gobject.IO_HUP,
1482
2089
functools.partial(self.handle_ipc,
1483
parent_pipe = parent_pipe,
1484
client_object = client))
2090
parent_pipe =
2091
parent_pipe,
2092
proc = proc,
2093
client_object =
2094
client))
1485
2095
parent_pipe.send(True)
1486
# remove the old hook in favor of the new above hook on same fileno
2096
# remove the old hook in favor of the new above hook on
2097
# same fileno
1487
2098
return False
1488
2099
if command == 'funcall':
1489
2100
funcname = request[1]
1490
2101
args = request[2]
1491
2102
kwargs = request[3]
1492
2103
1493
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1494
2104
parent_pipe.send(('data', getattr(client_object,
2105
funcname)(*args,
2106
**kwargs)))
2107
1495
2108
if command == 'getattr':
1496
2109
attrname = request[1]
1497
2110
if callable(client_object.__getattribute__(attrname)):
1498
2111
parent_pipe.send(('function',))
1499
2112
else:
1500
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2113
parent_pipe.send(('data', client_object
2114
.__getattribute__(attrname)))
1501
2115
1502
2116
if command == 'setattr':
1503
2117
attrname = request[1]
1507
2121
return True
1508
2122
1509
2123
2124
def rfc3339_duration_to_delta(duration):
2125
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2126
2127
>>> rfc3339_duration_to_delta("P7D")
2128
datetime.timedelta(7)
2129
>>> rfc3339_duration_to_delta("PT60S")
2130
datetime.timedelta(0, 60)
2131
>>> rfc3339_duration_to_delta("PT60M")
2132
datetime.timedelta(0, 3600)
2133
>>> rfc3339_duration_to_delta("PT24H")
2134
datetime.timedelta(1)
2135
>>> rfc3339_duration_to_delta("P1W")
2136
datetime.timedelta(7)
2137
>>> rfc3339_duration_to_delta("PT5M30S")
2138
datetime.timedelta(0, 330)
2139
>>> rfc3339_duration_to_delta("P1DT3M20S")
2140
datetime.timedelta(1, 200)
2141
"""
2142
2143
# Parsing an RFC 3339 duration with regular expressions is not
2144
# possible - there would have to be multiple places for the same
2145
# values, like seconds. The current code, while more esoteric, is
2146
# cleaner without depending on a parsing library. If Python had a
2147
# built-in library for parsing we would use it, but we'd like to
2148
# avoid excessive use of external libraries.
2149
2150
# New type for defining tokens, syntax, and semantics all-in-one
2151
Token = collections.namedtuple("Token",
2152
("regexp", # To match token; if
2153
# "value" is not None,
2154
# must have a "group"
2155
# containing digits
2156
"value", # datetime.timedelta or
2157
# None
2158
"followers")) # Tokens valid after
2159
# this token
2160
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2161
# the "duration" ABNF definition in RFC 3339, Appendix A.
2162
token_end = Token(re.compile(r"$"), None, frozenset())
2163
token_second = Token(re.compile(r"(\d+)S"),
2164
datetime.timedelta(seconds=1),
2165
frozenset((token_end,)))
2166
token_minute = Token(re.compile(r"(\d+)M"),
2167
datetime.timedelta(minutes=1),
2168
frozenset((token_second, token_end)))
2169
token_hour = Token(re.compile(r"(\d+)H"),
2170
datetime.timedelta(hours=1),
2171
frozenset((token_minute, token_end)))
2172
token_time = Token(re.compile(r"T"),
2173
None,
2174
frozenset((token_hour, token_minute,
2175
token_second)))
2176
token_day = Token(re.compile(r"(\d+)D"),
2177
datetime.timedelta(days=1),
2178
frozenset((token_time, token_end)))
2179
token_month = Token(re.compile(r"(\d+)M"),
2180
datetime.timedelta(weeks=4),
2181
frozenset((token_day, token_end)))
2182
token_year = Token(re.compile(r"(\d+)Y"),
2183
datetime.timedelta(weeks=52),
2184
frozenset((token_month, token_end)))
2185
token_week = Token(re.compile(r"(\d+)W"),
2186
datetime.timedelta(weeks=1),
2187
frozenset((token_end,)))
2188
token_duration = Token(re.compile(r"P"), None,
2189
frozenset((token_year, token_month,
2190
token_day, token_time,
2191
token_week))),
2192
# Define starting values
2193
value = datetime.timedelta() # Value so far
2194
found_token = None
2195
followers = frozenset(token_duration,) # Following valid tokens
2196
s = duration # String left to parse
2197
# Loop until end token is found
2198
while found_token is not token_end:
2199
# Search for any currently valid tokens
2200
for token in followers:
2201
match = token.regexp.match(s)
2202
if match is not None:
2203
# Token found
2204
if token.value is not None:
2205
# Value found, parse digits
2206
factor = int(match.group(1), 10)
2207
# Add to value so far
2208
value += factor * token.value
2209
# Strip token from string
2210
s = token.regexp.sub("", s, 1)
2211
# Go to found token
2212
found_token = token
2213
# Set valid next tokens
2214
followers = found_token.followers
2215
break
2216
else:
2217
# No currently valid tokens were found
2218
raise ValueError("Invalid RFC 3339 duration")
2219
# End token found
2220
return value
2221
2222
1510
2223
def string_to_delta(interval):
1511
2224
"""Parse a string and return a datetime.timedelta
1512
2225
1513
>>> string_to_delta(u'7d')
2226
>>> string_to_delta('7d')
1514
2227
datetime.timedelta(7)
1515
>>> string_to_delta(u'60s')
2228
>>> string_to_delta('60s')
1516
2229
datetime.timedelta(0, 60)
1517
>>> string_to_delta(u'60m')
2230
>>> string_to_delta('60m')
1518
2231
datetime.timedelta(0, 3600)
1519
>>> string_to_delta(u'24h')
2232
>>> string_to_delta('24h')
1520
2233
datetime.timedelta(1)
1521
>>> string_to_delta(u'1w')
2234
>>> string_to_delta('1w')
1522
2235
datetime.timedelta(7)
1523
>>> string_to_delta(u'5m 30s')
2236
>>> string_to_delta('5m 30s')
1524
2237
datetime.timedelta(0, 330)
1525
2238
"""
2239
2240
try:
2241
return rfc3339_duration_to_delta(interval)
2242
except ValueError:
2243
pass
2244
1526
2245
timevalue = datetime.timedelta(0)
1527
2246
for s in interval.split():
1528
2247
try:
1529
2248
suffix = unicode(s[-1])
1530
2249
value = int(s[:-1])
1531
if suffix == u"d":
2250
if suffix == "d":
1532
2251
delta = datetime.timedelta(value)
1533
elif suffix == u"s":
2252
elif suffix == "s":
1534
2253
delta = datetime.timedelta(0, value)
1535
elif suffix == u"m":
2254
elif suffix == "m":
1536
2255
delta = datetime.timedelta(0, 0, 0, 0, value)
1537
elif suffix == u"h":
2256
elif suffix == "h":
1538
2257
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1539
elif suffix == u"w":
2258
elif suffix == "w":
1540
2259
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1541
2260
else:
1542
raise ValueError(u"Unknown suffix %r" % suffix)
1543
except (ValueError, IndexError), e:
1544
raise ValueError(e.message)
2261
raise ValueError("Unknown suffix {0!r}"
2262
.format(suffix))
2263
except IndexError as e:
2264
raise ValueError(*(e.args))
1545
2265
timevalue += delta
1546
2266
return timevalue
1547
2267
1548
2268
1549
def if_nametoindex(interface):
1550
"""Call the C function if_nametoindex(), or equivalent
1551
1552
Note: This function cannot accept a unicode string."""
1553
global if_nametoindex
1554
try:
1555
if_nametoindex = (ctypes.cdll.LoadLibrary
1556
(ctypes.util.find_library(u"c"))
1557
.if_nametoindex)
1558
except (OSError, AttributeError):
1559
logger.warning(u"Doing if_nametoindex the hard way")
1560
def if_nametoindex(interface):
1561
"Get an interface index the hard way, i.e. using fcntl()"
1562
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1563
with contextlib.closing(socket.socket()) as s:
1564
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1565
struct.pack(str(u"16s16x"),
1566
interface))
1567
interface_index = struct.unpack(str(u"I"),
1568
ifreq[16:20])[0]
1569
return interface_index
1570
return if_nametoindex(interface)
1571
1572
1573
2269
def daemon(nochdir = False, noclose = False):
1574
2270
"""See daemon(3). Standard BSD Unix function.
1575
2271
1578
2274
sys.exit()
1579
2275
os.setsid()
1580
2276
if not nochdir:
1581
os.chdir(u"/")
2277
os.chdir("/")
1582
2278
if os.fork():
1583
2279
sys.exit()
1584
2280
if not noclose:
1585
2281
# Close all standard open file descriptors
1586
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2282
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1587
2283
if not stat.S_ISCHR(os.fstat(null).st_mode):
1588
2284
raise OSError(errno.ENODEV,
1589
u"%s not a character device"
1590
% os.path.devnull)
2285
"{0} not a character device"
2286
.format(os.devnull))
1591
2287
os.dup2(null, sys.stdin.fileno())
1592
2288
os.dup2(null, sys.stdout.fileno())
1593
2289
os.dup2(null, sys.stderr.fileno())
1600
2296
##################################################################
1601
2297
# Parsing of options, both command line and config file
1602
2298
1603
parser = optparse.OptionParser(version = "%%prog %s" % version)
1604
parser.add_option("-i", u"--interface", type=u"string",
1605
metavar="IF", help=u"Bind to interface IF")
1606
parser.add_option("-a", u"--address", type=u"string",
1607
help=u"Address to listen for requests on")
1608
parser.add_option("-p", u"--port", type=u"int",
1609
help=u"Port number to receive requests on")
1610
parser.add_option("--check", action=u"store_true",
1611
help=u"Run self-test")
1612
parser.add_option("--debug", action=u"store_true",
1613
help=u"Debug mode; run in foreground and log to"
1614
u" terminal")
1615
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1616
u" priority string (see GnuTLS documentation)")
1617
parser.add_option("--servicename", type=u"string",
1618
metavar=u"NAME", help=u"Zeroconf service name")
1619
parser.add_option("--configdir", type=u"string",
1620
default=u"/etc/mandos", metavar=u"DIR",
1621
help=u"Directory to search for configuration"
1622
u" files")
1623
parser.add_option("--no-dbus", action=u"store_false",
1624
dest=u"use_dbus", help=u"Do not provide D-Bus"
1625
u" system bus interface")
1626
parser.add_option("--no-ipv6", action=u"store_false",
1627
dest=u"use_ipv6", help=u"Do not use IPv6")
1628
options = parser.parse_args()[0]
2299
parser = argparse.ArgumentParser()
2300
parser.add_argument("-v", "--version", action="version",
2301
version = "%(prog)s {0}".format(version),
2302
help="show version number and exit")
2303
parser.add_argument("-i", "--interface", metavar="IF",
2304
help="Bind to interface IF")
2305
parser.add_argument("-a", "--address",
2306
help="Address to listen for requests on")
2307
parser.add_argument("-p", "--port", type=int,
2308
help="Port number to receive requests on")
2309
parser.add_argument("--check", action="store_true",
2310
help="Run self-test")
2311
parser.add_argument("--debug", action="store_true",
2312
help="Debug mode; run in foreground and log"
2313
" to terminal", default=None)
2314
parser.add_argument("--debuglevel", metavar="LEVEL",
2315
help="Debug level for stdout output")
2316
parser.add_argument("--priority", help="GnuTLS"
2317
" priority string (see GnuTLS documentation)")
2318
parser.add_argument("--servicename",
2319
metavar="NAME", help="Zeroconf service name")
2320
parser.add_argument("--configdir",
2321
default="/etc/mandos", metavar="DIR",
2322
help="Directory to search for configuration"
2323
" files")
2324
parser.add_argument("--no-dbus", action="store_false",
2325
dest="use_dbus", help="Do not provide D-Bus"
2326
" system bus interface", default=None)
2327
parser.add_argument("--no-ipv6", action="store_false",
2328
dest="use_ipv6", help="Do not use IPv6",
2329
default=None)
2330
parser.add_argument("--no-restore", action="store_false",
2331
dest="restore", help="Do not restore stored"
2332
" state", default=None)
2333
parser.add_argument("--socket", type=int,
2334
help="Specify a file descriptor to a network"
2335
" socket to use instead of creating one")
2336
parser.add_argument("--statedir", metavar="DIR",
2337
help="Directory to save/restore state in")
2338
parser.add_argument("--foreground", action="store_true",
2339
help="Run in foreground", default=None)
2340
parser.add_argument("--no-zeroconf", action="store_false",
2341
dest="zeroconf", help="Do not use Zeroconf",
2342
default=None)
2343
2344
options = parser.parse_args()
1629
2345
1630
2346
if options.check:
1631
2347
import doctest
1632
doctest.testmod()
1633
sys.exit()
2348
fail_count, test_count = doctest.testmod()
2349
sys.exit(os.EX_OK if fail_count == 0 else 1)
1634
2350
1635
2351
# Default values for config file for server-global settings
1636
server_defaults = { u"interface": u"",
1637
u"address": u"",
1638
u"port": u"",
1639
u"debug": u"False",
1640
u"priority":
1641
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1642
u"servicename": u"Mandos",
1643
u"use_dbus": u"True",
1644
u"use_ipv6": u"True",
2352
server_defaults = { "interface": "",
2353
"address": "",
2354
"port": "",
2355
"debug": "False",
2356
"priority":
2357
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2358
"servicename": "Mandos",
2359
"use_dbus": "True",
2360
"use_ipv6": "True",
2361
"debuglevel": "",
2362
"restore": "True",
2363
"socket": "",
2364
"statedir": "/var/lib/mandos",
2365
"foreground": "False",
2366
"zeroconf": "True",
1645
2367
}
1646
2368
1647
2369
# Parse config file for server-global settings
1648
2370
server_config = configparser.SafeConfigParser(server_defaults)
1649
2371
del server_defaults
1650
2372
server_config.read(os.path.join(options.configdir,
1651
u"mandos.conf"))
2373
"mandos.conf"))
1652
2374
# Convert the SafeConfigParser object to a dict
1653
2375
server_settings = server_config.defaults()
1654
2376
# Use the appropriate methods on the non-string config options
1655
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1656
server_settings[option] = server_config.getboolean(u"DEFAULT",
2377
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2378
server_settings[option] = server_config.getboolean("DEFAULT",
1657
2379
option)
1658
2380
if server_settings["port"]:
1659
server_settings["port"] = server_config.getint(u"DEFAULT",
1660
u"port")
2381
server_settings["port"] = server_config.getint("DEFAULT",
2382
"port")
2383
if server_settings["socket"]:
2384
server_settings["socket"] = server_config.getint("DEFAULT",
2385
"socket")
2386
# Later, stdin will, and stdout and stderr might, be dup'ed
2387
# over with an opened os.devnull. But we don't want this to
2388
# happen with a supplied network socket.
2389
if 0 <= server_settings["socket"] <= 2:
2390
server_settings["socket"] = os.dup(server_settings
2391
["socket"])
1661
2392
del server_config
1662
2393
1663
2394
# Override the settings from the config file with command line
1664
2395
# options, if set.
1665
for option in (u"interface", u"address", u"port", u"debug",
1666
u"priority", u"servicename", u"configdir",
1667
u"use_dbus", u"use_ipv6"):
2396
for option in ("interface", "address", "port", "debug",
2397
"priority", "servicename", "configdir",
2398
"use_dbus", "use_ipv6", "debuglevel", "restore",
2399
"statedir", "socket", "foreground", "zeroconf"):
1668
2400
value = getattr(options, option)
1669
2401
if value is not None:
1670
2402
server_settings[option] = value
1673
2405
for option in server_settings.keys():
1674
2406
if type(server_settings[option]) is str:
1675
2407
server_settings[option] = unicode(server_settings[option])
2408
# Force all boolean options to be boolean
2409
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2410
"foreground", "zeroconf"):
2411
server_settings[option] = bool(server_settings[option])
2412
# Debug implies foreground
2413
if server_settings["debug"]:
2414
server_settings["foreground"] = True
1676
2415
# Now we have our good server settings in "server_settings"
1677
2416
1678
2417
##################################################################
1679
2418
2419
if (not server_settings["zeroconf"] and
2420
not (server_settings["port"]
2421
or server_settings["socket"] != "")):
2422
parser.error("Needs port or socket to work without"
2423
" Zeroconf")
2424
1680
2425
# For convenience
1681
debug = server_settings[u"debug"]
1682
use_dbus = server_settings[u"use_dbus"]
1683
use_ipv6 = server_settings[u"use_ipv6"]
1684
1685
if not debug:
1686
syslogger.setLevel(logging.WARNING)
1687
console.setLevel(logging.WARNING)
1688
1689
if server_settings[u"servicename"] != u"Mandos":
2426
debug = server_settings["debug"]
2427
debuglevel = server_settings["debuglevel"]
2428
use_dbus = server_settings["use_dbus"]
2429
use_ipv6 = server_settings["use_ipv6"]
2430
stored_state_path = os.path.join(server_settings["statedir"],
2431
stored_state_file)
2432
foreground = server_settings["foreground"]
2433
zeroconf = server_settings["zeroconf"]
2434
2435
if debug:
2436
initlogger(debug, logging.DEBUG)
2437
else:
2438
if not debuglevel:
2439
initlogger(debug)
2440
else:
2441
level = getattr(logging, debuglevel.upper())
2442
initlogger(debug, level)
2443
2444
if server_settings["servicename"] != "Mandos":
1690
2445
syslogger.setFormatter(logging.Formatter
1691
(u'Mandos (%s) [%%(process)d]:'
1692
u' %%(levelname)s: %%(message)s'
1693
% server_settings[u"servicename"]))
2446
('Mandos ({0}) [%(process)d]:'
2447
' %(levelname)s: %(message)s'
2448
.format(server_settings
2449
["servicename"])))
1694
2450
1695
2451
# Parse config file with clients
1696
client_defaults = { u"timeout": u"1h",
1697
u"interval": u"5m",
1698
u"checker": u"fping -q -- %%(host)s",
1699
u"host": u"",
1700
u"approved_delay": u"0s",
1701
u"approved_duration": u"1s",
1702
}
1703
client_config = configparser.SafeConfigParser(client_defaults)
1704
client_config.read(os.path.join(server_settings[u"configdir"],
1705
u"clients.conf"))
2452
client_config = configparser.SafeConfigParser(Client
2453
.client_defaults)
2454
client_config.read(os.path.join(server_settings["configdir"],
2455
"clients.conf"))
1706
2456
1707
2457
global mandos_dbus_service
1708
2458
mandos_dbus_service = None
1709
2459
1710
tcp_server = MandosServer((server_settings[u"address"],
1711
server_settings[u"port"]),
2460
socketfd = None
2461
if server_settings["socket"] != "":
2462
socketfd = server_settings["socket"]
2463
tcp_server = MandosServer((server_settings["address"],
2464
server_settings["port"]),
1712
2465
ClientHandler,
1713
interface=server_settings[u"interface"],
2466
interface=(server_settings["interface"]
2467
or None),
1714
2468
use_ipv6=use_ipv6,
1715
2469
gnutls_priority=
1716
server_settings[u"priority"],
1717
use_dbus=use_dbus)
1718
pidfilename = u"/var/run/mandos.pid"
1719
try:
1720
pidfile = open(pidfilename, u"w")
1721
except IOError:
1722
logger.error(u"Could not open file %r", pidfilename)
2470
server_settings["priority"],
2471
use_dbus=use_dbus,
2472
socketfd=socketfd)
2473
if not foreground:
2474
pidfilename = "/run/mandos.pid"
2475
if not os.path.isdir("/run/."):
2476
pidfilename = "/var/run/mandos.pid"
2477
pidfile = None
2478
try:
2479
pidfile = open(pidfilename, "w")
2480
except IOError as e:
2481
logger.error("Could not open file %r", pidfilename,
2482
exc_info=e)
1723
2483
1724
try:
1725
uid = pwd.getpwnam(u"_mandos").pw_uid
1726
gid = pwd.getpwnam(u"_mandos").pw_gid
1727
except KeyError:
2484
for name in ("_mandos", "mandos", "nobody"):
1728
2485
try:
1729
uid = pwd.getpwnam(u"mandos").pw_uid
1730
gid = pwd.getpwnam(u"mandos").pw_gid
2486
uid = pwd.getpwnam(name).pw_uid
2487
gid = pwd.getpwnam(name).pw_gid
2488
break
1731
2489
except KeyError:
1732
try:
1733
uid = pwd.getpwnam(u"nobody").pw_uid
1734
gid = pwd.getpwnam(u"nobody").pw_gid
1735
except KeyError:
1736
uid = 65534
1737
gid = 65534
2490
continue
2491
else:
2492
uid = 65534
2493
gid = 65534
1738
2494
try:
1739
2495
os.setgid(gid)
1740
2496
os.setuid(uid)
1741
except OSError, error:
1742
if error[0] != errno.EPERM:
1743
raise error
2497
except OSError as error:
2498
if error.errno != errno.EPERM:
2499
raise
1744
2500
1745
# Enable all possible GnuTLS debugging
1746
2501
if debug:
2502
# Enable all possible GnuTLS debugging
2503
1747
2504
# "Use a log level over 10 to enable all debugging options."
1748
2505
# - GnuTLS manual
1749
2506
gnutls.library.functions.gnutls_global_set_log_level(11)
1750
2507
1751
2508
@gnutls.library.types.gnutls_log_func
1752
2509
def debug_gnutls(level, string):
1753
logger.debug(u"GnuTLS: %s", string[:-1])
2510
logger.debug("GnuTLS: %s", string[:-1])
1754
2511
1755
2512
(gnutls.library.functions
1756
2513
.gnutls_global_set_log_function(debug_gnutls))
2514
2515
# Redirect stdin so all checkers get /dev/null
2516
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2517
os.dup2(null, sys.stdin.fileno())
2518
if null > 2:
2519
os.close(null)
2520
2521
# Need to fork before connecting to D-Bus
2522
if not foreground:
2523
# Close all input and output, do double fork, etc.
2524
daemon()
2525
2526
# multiprocessing will use threads, so before we use gobject we
2527
# need to inform gobject that threads will be used.
2528
gobject.threads_init()
1757
2529
1758
2530
global main_loop
1759
2531
# From the Avahi example code
1760
DBusGMainLoop(set_as_default=True )
2532
DBusGMainLoop(set_as_default=True)
1761
2533
main_loop = gobject.MainLoop()
1762
2534
bus = dbus.SystemBus()
1763
2535
# End of Avahi example code
1764
2536
if use_dbus:
1765
2537
try:
1766
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2538
bus_name = dbus.service.BusName("se.recompile.Mandos",
1767
2539
bus, do_not_queue=True)
1768
except dbus.exceptions.NameExistsException, e:
1769
logger.error(unicode(e) + u", disabling D-Bus")
2540
old_bus_name = (dbus.service.BusName
2541
("se.bsnet.fukt.Mandos", bus,
2542
do_not_queue=True))
2543
except dbus.exceptions.NameExistsException as e:
2544
logger.error("Disabling D-Bus:", exc_info=e)
1770
2545
use_dbus = False
1771
server_settings[u"use_dbus"] = False
2546
server_settings["use_dbus"] = False
1772
2547
tcp_server.use_dbus = False
1773
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1774
service = AvahiService(name = server_settings[u"servicename"],
1775
servicetype = u"_mandos._tcp",
1776
protocol = protocol, bus = bus)
1777
if server_settings["interface"]:
1778
service.interface = (if_nametoindex
1779
(str(server_settings[u"interface"])))
2548
if zeroconf:
2549
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2550
service = AvahiServiceToSyslog(name =
2551
server_settings["servicename"],
2552
servicetype = "_mandos._tcp",
2553
protocol = protocol, bus = bus)
2554
if server_settings["interface"]:
2555
service.interface = (if_nametoindex
2556
(str(server_settings["interface"])))
2557
2558
global multiprocessing_manager
2559
multiprocessing_manager = multiprocessing.Manager()
1780
2560
1781
2561
client_class = Client
1782
2562
if use_dbus:
1783
2563
client_class = functools.partial(ClientDBus, bus = bus)
1784
def client_config_items(config, section):
1785
special_settings = {
1786
"approved_by_default":
1787
lambda: config.getboolean(section,
1788
"approved_by_default"),
1789
}
1790
for name, value in config.items(section):
2564
2565
client_settings = Client.config_parser(client_config)
2566
old_client_settings = {}
2567
clients_data = {}
2568
2569
# This is used to redirect stdout and stderr for checker processes
2570
global wnull
2571
wnull = open(os.devnull, "w") # A writable /dev/null
2572
# Only used if server is running in foreground but not in debug
2573
# mode
2574
if debug or not foreground:
2575
wnull.close()
2576
2577
# Get client data and settings from last running state.
2578
if server_settings["restore"]:
2579
try:
2580
with open(stored_state_path, "rb") as stored_state:
2581
clients_data, old_client_settings = (pickle.load
2582
(stored_state))
2583
os.remove(stored_state_path)
2584
except IOError as e:
2585
if e.errno == errno.ENOENT:
2586
logger.warning("Could not load persistent state: {0}"
2587
.format(os.strerror(e.errno)))
2588
else:
2589
logger.critical("Could not load persistent state:",
2590
exc_info=e)
2591
raise
2592
except EOFError as e:
2593
logger.warning("Could not load persistent state: "
2594
"EOFError:", exc_info=e)
2595
2596
with PGPEngine() as pgp:
2597
for client_name, client in clients_data.iteritems():
2598
# Skip removed clients
2599
if client_name not in client_settings:
2600
continue
2601
2602
# Decide which value to use after restoring saved state.
2603
# We have three different values: Old config file,
2604
# new config file, and saved state.
2605
# New config value takes precedence if it differs from old
2606
# config value, otherwise use saved state.
2607
for name, value in client_settings[client_name].items():
2608
try:
2609
# For each value in new config, check if it
2610
# differs from the old config value (Except for
2611
# the "secret" attribute)
2612
if (name != "secret" and
2613
value != old_client_settings[client_name]
2614
[name]):
2615
client[name] = value
2616
except KeyError:
2617
pass
2618
2619
# Clients who has passed its expire date can still be
2620
# enabled if its last checker was successful. Clients
2621
# whose checker succeeded before we stored its state is
2622
# assumed to have successfully run all checkers during
2623
# downtime.
2624
if client["enabled"]:
2625
if datetime.datetime.utcnow() >= client["expires"]:
2626
if not client["last_checked_ok"]:
2627
logger.warning(
2628
"disabling client {0} - Client never "
2629
"performed a successful checker"
2630
.format(client_name))
2631
client["enabled"] = False
2632
elif client["last_checker_status"] != 0:
2633
logger.warning(
2634
"disabling client {0} - Client "
2635
"last checker failed with error code {1}"
2636
.format(client_name,
2637
client["last_checker_status"]))
2638
client["enabled"] = False
2639
else:
2640
client["expires"] = (datetime.datetime
2641
.utcnow()
2642
+ client["timeout"])
2643
logger.debug("Last checker succeeded,"
2644
" keeping {0} enabled"
2645
.format(client_name))
1791
2646
try:
1792
yield (name, special_settings[name]())
1793
except KeyError:
1794
yield (name, value)
1795
1796
tcp_server.clients.update(set(
1797
client_class(name = section,
1798
config= dict(client_config_items(
1799
client_config, section)))
1800
for section in client_config.sections()))
2647
client["secret"] = (
2648
pgp.decrypt(client["encrypted_secret"],
2649
client_settings[client_name]
2650
["secret"]))
2651
except PGPError:
2652
# If decryption fails, we use secret from new settings
2653
logger.debug("Failed to decrypt {0} old secret"
2654
.format(client_name))
2655
client["secret"] = (
2656
client_settings[client_name]["secret"])
2657
2658
# Add/remove clients based on new changes made to config
2659
for client_name in (set(old_client_settings)
2660
- set(client_settings)):
2661
del clients_data[client_name]
2662
for client_name in (set(client_settings)
2663
- set(old_client_settings)):
2664
clients_data[client_name] = client_settings[client_name]
2665
2666
# Create all client objects
2667
for client_name, client in clients_data.iteritems():
2668
tcp_server.clients[client_name] = client_class(
2669
name = client_name, settings = client,
2670
server_settings = server_settings)
2671
1801
2672
if not tcp_server.clients:
1802
logger.warning(u"No clients defined")
1803
1804
if debug:
1805
# Redirect stdin so all checkers get /dev/null
1806
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1807
os.dup2(null, sys.stdin.fileno())
1808
if null > 2:
1809
os.close(null)
1810
else:
1811
# No console logging
1812
logger.removeHandler(console)
1813
# Close all input and output, do double fork, etc.
1814
daemon()
1815
1816
try:
1817
with pidfile:
1818
pid = os.getpid()
1819
pidfile.write(str(pid) + "\n")
2673
logger.warning("No clients defined")
2674
2675
if not foreground:
2676
if pidfile is not None:
2677
try:
2678
with pidfile:
2679
pid = os.getpid()
2680
pidfile.write(str(pid) + "\n".encode("utf-8"))
2681
except IOError:
2682
logger.error("Could not write to file %r with PID %d",
2683
pidfilename, pid)
1820
2684
del pidfile
1821
except IOError:
1822
logger.error(u"Could not write to file %r with PID %d",
1823
pidfilename, pid)
1824
except NameError:
1825
# "pidfile" was never created
1826
pass
1827
del pidfilename
2685
del pidfilename
1828
2686
1829
if not debug:
1830
signal.signal(signal.SIGINT, signal.SIG_IGN)
1831
2687
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1832
2688
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1833
2689
1834
2690
if use_dbus:
1835
class MandosDBusService(dbus.service.Object):
2691
@alternate_dbus_interfaces({"se.recompile.Mandos":
2692
"se.bsnet.fukt.Mandos"})
2693
class MandosDBusService(DBusObjectWithProperties):
1836
2694
"""A D-Bus proxy object"""
1837
2695
def __init__(self):
1838
dbus.service.Object.__init__(self, bus, u"/")
1839
_interface = u"se.bsnet.fukt.Mandos"
1840
1841
@dbus.service.signal(_interface, signature=u"o")
2696
dbus.service.Object.__init__(self, bus, "/")
2697
_interface = "se.recompile.Mandos"
2698
2699
@dbus_interface_annotations(_interface)
2700
def _foo(self):
2701
return { "org.freedesktop.DBus.Property"
2702
".EmitsChangedSignal":
2703
"false"}
2704
2705
@dbus.service.signal(_interface, signature="o")
1842
2706
def ClientAdded(self, objpath):
1843
2707
"D-Bus signal"
1844
2708
pass
1845
2709
1846
@dbus.service.signal(_interface, signature=u"ss")
2710
@dbus.service.signal(_interface, signature="ss")
1847
2711
def ClientNotFound(self, fingerprint, address):
1848
2712
"D-Bus signal"
1849
2713
pass
1850
2714
1851
@dbus.service.signal(_interface, signature=u"os")
2715
@dbus.service.signal(_interface, signature="os")
1852
2716
def ClientRemoved(self, objpath, name):
1853
2717
"D-Bus signal"
1854
2718
pass
1855
2719
1856
@dbus.service.method(_interface, out_signature=u"ao")
2720
@dbus.service.method(_interface, out_signature="ao")
1857
2721
def GetAllClients(self):
1858
2722
"D-Bus method"
1859
2723
return dbus.Array(c.dbus_object_path
1860
for c in tcp_server.clients)
2724
for c in
2725
tcp_server.clients.itervalues())
1861
2726
1862
2727
@dbus.service.method(_interface,
1863
out_signature=u"a{oa{sv}}")
2728
out_signature="a{oa{sv}}")
1864
2729
def GetAllClientsWithProperties(self):
1865
2730
"D-Bus method"
1866
2731
return dbus.Dictionary(
1867
((c.dbus_object_path, c.GetAll(u""))
1868
for c in tcp_server.clients),
1869
signature=u"oa{sv}")
2732
((c.dbus_object_path, c.GetAll(""))
2733
for c in tcp_server.clients.itervalues()),
2734
signature="oa{sv}")
1870
2735
1871
@dbus.service.method(_interface, in_signature=u"o")
2736
@dbus.service.method(_interface, in_signature="o")
1872
2737
def RemoveClient(self, object_path):
1873
2738
"D-Bus method"
1874
for c in tcp_server.clients:
2739
for c in tcp_server.clients.itervalues():
1875
2740
if c.dbus_object_path == object_path:
1876
tcp_server.clients.remove(c)
2741
del tcp_server.clients[c.name]
1877
2742
c.remove_from_connection()
1878
2743
# Don't signal anything except ClientRemoved
1879
2744
c.disable(quiet=True)
1888
2753
1889
2754
def cleanup():
1890
2755
"Cleanup function; run on exit"
1891
service.cleanup()
1892
2756
if zeroconf:
2757
service.cleanup()
2758
2759
multiprocessing.active_children()
2760
wnull.close()
2761
if not (tcp_server.clients or client_settings):
2762
return
2763
2764
# Store client before exiting. Secrets are encrypted with key
2765
# based on what config file has. If config file is
2766
# removed/edited, old secret will thus be unrecovable.
2767
clients = {}
2768
with PGPEngine() as pgp:
2769
for client in tcp_server.clients.itervalues():
2770
key = client_settings[client.name]["secret"]
2771
client.encrypted_secret = pgp.encrypt(client.secret,
2772
key)
2773
client_dict = {}
2774
2775
# A list of attributes that can not be pickled
2776
# + secret.
2777
exclude = set(("bus", "changedstate", "secret",
2778
"checker", "server_settings"))
2779
for name, typ in (inspect.getmembers
2780
(dbus.service.Object)):
2781
exclude.add(name)
2782
2783
client_dict["encrypted_secret"] = (client
2784
.encrypted_secret)
2785
for attr in client.client_structure:
2786
if attr not in exclude:
2787
client_dict[attr] = getattr(client, attr)
2788
2789
clients[client.name] = client_dict
2790
del client_settings[client.name]["secret"]
2791
2792
try:
2793
with (tempfile.NamedTemporaryFile
2794
(mode='wb', suffix=".pickle", prefix='clients-',
2795
dir=os.path.dirname(stored_state_path),
2796
delete=False)) as stored_state:
2797
pickle.dump((clients, client_settings), stored_state)
2798
tempname=stored_state.name
2799
os.rename(tempname, stored_state_path)
2800
except (IOError, OSError) as e:
2801
if not debug:
2802
try:
2803
os.remove(tempname)
2804
except NameError:
2805
pass
2806
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2807
logger.warning("Could not save persistent state: {0}"
2808
.format(os.strerror(e.errno)))
2809
else:
2810
logger.warning("Could not save persistent state:",
2811
exc_info=e)
2812
raise
2813
2814
# Delete all clients, and settings from config
1893
2815
while tcp_server.clients:
1894
client = tcp_server.clients.pop()
2816
name, client = tcp_server.clients.popitem()
1895
2817
if use_dbus:
1896
2818
client.remove_from_connection()
1897
client.disable_hook = None
1898
2819
# Don't signal anything except ClientRemoved
1899
2820
client.disable(quiet=True)
1900
2821
if use_dbus:
1901
2822
# Emit D-Bus signal
1902
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2823
mandos_dbus_service.ClientRemoved(client
2824
.dbus_object_path,
1903
2825
client.name)
2826
client_settings.clear()
1904
2827
1905
2828
atexit.register(cleanup)
1906
2829
1907
for client in tcp_server.clients:
2830
for client in tcp_server.clients.itervalues():
1908
2831
if use_dbus:
1909
2832
# Emit D-Bus signal
1910
2833
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1911
client.enable()
2834
# Need to initiate checking of clients
2835
if client.enabled:
2836
client.init_checker()
1912
2837
1913
2838
tcp_server.enable()
1914
2839
tcp_server.server_activate()
1915
2840
1916
2841
# Find out what port we got
1917
service.port = tcp_server.socket.getsockname()[1]
2842
if zeroconf:
2843
service.port = tcp_server.socket.getsockname()[1]
1918
2844
if use_ipv6:
1919
logger.info(u"Now listening on address %r, port %d,"
1920
" flowinfo %d, scope_id %d"
1921
% tcp_server.socket.getsockname())
2845
logger.info("Now listening on address %r, port %d,"
2846
" flowinfo %d, scope_id %d",
2847
*tcp_server.socket.getsockname())
1922
2848
else: # IPv4
1923
logger.info(u"Now listening on address %r, port %d"
1924
% tcp_server.socket.getsockname())
2849
logger.info("Now listening on address %r, port %d",
2850
*tcp_server.socket.getsockname())
1925
2851
1926
2852
#service.interface = tcp_server.socket.getsockname()[3]
1927
2853
1928
2854
try:
1929
# From the Avahi example code
1930
try:
1931
service.activate()
1932
except dbus.exceptions.DBusException, error:
1933
logger.critical(u"DBusException: %s", error)
1934
cleanup()
1935
sys.exit(1)
1936
# End of Avahi example code
2855
if zeroconf:
2856
# From the Avahi example code
2857
try:
2858
service.activate()
2859
except dbus.exceptions.DBusException as error:
2860
logger.critical("D-Bus Exception", exc_info=error)
2861
cleanup()
2862
sys.exit(1)
2863
# End of Avahi example code
1937
2864
1938
2865
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1939
2866
lambda *args, **kwargs:
1940
2867
(tcp_server.handle_request
1941
2868
(*args[2:], **kwargs) or True))
1942
2869
1943
logger.debug(u"Starting main loop")
2870
logger.debug("Starting main loop")
1944
2871
main_loop.run()
1945
except AvahiError, error:
1946
logger.critical(u"AvahiError: %s", error)
2872
except AvahiError as error:
2873
logger.critical("Avahi Error", exc_info=error)
1947
2874
cleanup()
1948
2875
sys.exit(1)
1949
2876
except KeyboardInterrupt:
1950
2877
if debug:
1951
print >> sys.stderr
1952
logger.debug(u"Server received KeyboardInterrupt")
1953
logger.debug(u"Server exiting")
2878
print("", file=sys.stderr)
2879
logger.debug("Server received KeyboardInterrupt")
2880
logger.debug("Server exiting")
1954
2881
# Must run before the D-Bus bus name gets deregistered
1955
2882
cleanup()
1956
2883
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0