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- Committer: Teddy Hogeborn
- Date: 2014-03-10 07:04:09 UTC
- Revision ID: teddy@recompile.se-20140310070409-ho6p1wrnpopi2ny1
White space fix: change "if (" to "if(" in C code.
* plugins.d/askpass-fifo.c (error_plus): White space fix.
* plugins.d/password-prompt.c (error_plus, conflict_detection,
main): - '' -
* plugins.d/plymouth.c (error_plus, exec_and_wait, get_pid): - '' -
* plugins.d/splashy.c (error_plus): - '' -
* plugins.d/usplash.c (error_plus): - '' -
* plugins.d/askpass-fifo.c (error_plus): White space fix.
* plugins.d/password-prompt.c (error_plus, conflict_detection,
main): - '' -
* plugins.d/plymouth.c (error_plus, exec_and_wait, get_pid): - '' -
* plugins.d/splashy.c (error_plus): - '' -
* plugins.d/usplash.c (error_plus): - '' -
- files added:
- debian/mandos-client.examples
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
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# Everything else is
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# Copyright © 2008-2010 Teddy Hogeborn
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# Copyright © 2008-2010 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,
35
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
80
88
except ImportError:
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SO_BINDTODEVICE = None
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90
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version = "1.2.1"
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#logger = logging.getLogger(u'mandos')
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logger = logging.Logger(u'mandos')
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syslogger = (logging.handlers.SysLogHandler
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = "/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:'
99
u' %(message)s'))
100
logger.addHandler(console)
91
version = "1.6.4"
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stored_state_file = "clients.pickle"
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logger = logging.getLogger()
95
syslogger = None
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97
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
101
except (OSError, AttributeError):
102
def if_nametoindex(interface):
103
"Get an interface index the hard way, i.e. using fcntl()"
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
with contextlib.closing(socket.socket()) as s:
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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
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struct.pack(str("16s16x"),
108
interface))
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interface_index = struct.unpack(str("I"),
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ifreq[16:20])[0]
111
return interface_index
112
113
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def initlogger(debug, level=logging.WARNING):
115
"""init logger and add loglevel"""
116
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syslogger = (logging.handlers.SysLogHandler
118
(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:'
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' %(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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class PGPError(Exception):
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"""Exception if encryption/decryption fails"""
138
pass
139
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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):
152
return self
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def __exit__(self, exc_type, exc_value, traceback):
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self._cleanup()
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return False
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def __del__(self):
159
self._cleanup()
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def _cleanup(self):
162
if self.tempdir is not None:
163
# Delete contents of tempdir
164
for root, dirs, files in os.walk(self.tempdir,
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topdown = False):
166
for filename in files:
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os.remove(os.path.join(root, filename))
168
for dirname in dirs:
169
os.rmdir(os.path.join(root, dirname))
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# Remove tempdir
171
os.rmdir(self.tempdir)
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self.tempdir = None
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174
def password_encode(self, password):
175
# Passphrase can not be empty and can not contain newlines or
176
# NUL bytes. So we prefix it and hex encode it.
177
encoded = b"mandos" + binascii.hexlify(password)
178
if len(encoded) > 2048:
179
# GnuPG can't handle long passwords, so encode differently
180
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
181
.replace(b"\n", b"\\n")
182
.replace(b"\0", b"\\x00"))
183
return encoded
184
185
def encrypt(self, data, password):
186
passphrase = self.password_encode(password)
187
with tempfile.NamedTemporaryFile(dir=self.tempdir
188
) as passfile:
189
passfile.write(passphrase)
190
passfile.flush()
191
proc = subprocess.Popen(['gpg', '--symmetric',
192
'--passphrase-file',
193
passfile.name]
194
+ self.gnupgargs,
195
stdin = subprocess.PIPE,
196
stdout = subprocess.PIPE,
197
stderr = subprocess.PIPE)
198
ciphertext, err = proc.communicate(input = data)
199
if proc.returncode != 0:
200
raise PGPError(err)
201
return ciphertext
202
203
def decrypt(self, data, password):
204
passphrase = self.password_encode(password)
205
with tempfile.NamedTemporaryFile(dir = self.tempdir
206
) as passfile:
207
passfile.write(passphrase)
208
passfile.flush()
209
proc = subprocess.Popen(['gpg', '--decrypt',
210
'--passphrase-file',
211
passfile.name]
212
+ self.gnupgargs,
213
stdin = subprocess.PIPE,
214
stdout = subprocess.PIPE,
215
stderr = subprocess.PIPE)
216
decrypted_plaintext, err = proc.communicate(input
217
= data)
218
if proc.returncode != 0:
219
raise PGPError(err)
220
return decrypted_plaintext
221
101
222
102
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class AvahiError(Exception):
103
224
def __init__(self, value, *args, **kwargs):
119
240
Attributes:
120
241
interface: integer; avahi.IF_UNSPEC or an interface index.
121
242
Used to optionally bind to the specified interface.
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name: string; Example: u'Mandos'
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type: string; Example: u'_mandos._tcp'.
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See <http://www.dns-sd.org/ServiceTypes.html>
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name: string; Example: 'Mandos'
244
type: string; Example: '_mandos._tcp'.
245
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
134
255
bus: dbus.SystemBus()
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256
"""
257
136
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def __init__(self, interface = avahi.IF_UNSPEC, name = None,
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servicetype = None, port = None, TXT = None,
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domain = u"", host = u"", max_renames = 32768,
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domain = "", host = "", max_renames = 32768,
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protocol = avahi.PROTO_UNSPEC, bus = None):
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self.interface = interface
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self.name = name
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self.group = None # our entry group
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self.server = None
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self.bus = bus
275
self.entry_group_state_changed_match = None
276
153
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def rename(self):
154
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"""Derived from the Avahi example code"""
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if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
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u" after %i retries, exiting.",
280
logger.critical("No suitable Zeroconf service name found"
281
" after %i retries, exiting.",
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282
self.rename_count)
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
283
raise AvahiServiceError("Too many renames")
284
self.name = unicode(self.server
285
.GetAlternativeServiceName(self.name))
286
logger.info("Changing Zeroconf service name to %r ...",
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self.name)
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syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
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u' %%(levelname)s: %%(message)s'
166
% self.name))
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288
self.remove()
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try:
169
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self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
291
except dbus.exceptions.DBusException as error:
292
logger.critical("D-Bus Exception", exc_info=error)
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293
self.cleanup()
173
294
os._exit(1)
174
295
self.rename_count += 1
296
175
297
def remove(self):
176
298
"""Derived from the Avahi example code"""
299
if self.entry_group_state_changed_match is not None:
300
self.entry_group_state_changed_match.remove()
301
self.entry_group_state_changed_match = None
177
302
if self.group is not None:
178
303
self.group.Reset()
304
179
305
def add(self):
180
306
"""Derived from the Avahi example code"""
307
self.remove()
181
308
if self.group is None:
182
309
self.group = dbus.Interface(
183
310
self.bus.get_object(avahi.DBUS_NAME,
184
311
self.server.EntryGroupNew()),
185
312
avahi.DBUS_INTERFACE_ENTRY_GROUP)
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
313
self.entry_group_state_changed_match = (
314
self.group.connect_to_signal(
315
'StateChanged', self.entry_group_state_changed))
316
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
190
317
self.name, self.type)
191
318
self.group.AddService(
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self.interface,
197
324
dbus.UInt16(self.port),
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avahi.string_array_to_txt_array(self.TXT))
199
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self.group.Commit()
327
200
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def entry_group_state_changed(self, state, error):
201
329
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
330
logger.debug("Avahi entry group state change: %i", state)
203
331
204
332
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
333
logger.debug("Zeroconf service established.")
206
334
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
335
logger.info("Zeroconf service name collision.")
208
336
self.rename()
209
337
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
338
logger.critical("Avahi: Error in group state changed %s",
211
339
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
340
raise AvahiGroupError("State changed: {0!s}"
341
.format(error))
342
214
343
def cleanup(self):
215
344
"""Derived from the Avahi example code"""
216
345
if self.group is not None:
217
self.group.Free()
346
try:
347
self.group.Free()
348
except (dbus.exceptions.UnknownMethodException,
349
dbus.exceptions.DBusException):
350
pass
218
351
self.group = None
219
def server_state_changed(self, state):
352
self.remove()
353
354
def server_state_changed(self, state, error=None):
220
355
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
356
logger.debug("Avahi server state change: %i", state)
357
bad_states = { avahi.SERVER_INVALID:
358
"Zeroconf server invalid",
359
avahi.SERVER_REGISTERING: None,
360
avahi.SERVER_COLLISION:
361
"Zeroconf server name collision",
362
avahi.SERVER_FAILURE:
363
"Zeroconf server failure" }
364
if state in bad_states:
365
if bad_states[state] is not None:
366
if error is None:
367
logger.error(bad_states[state])
368
else:
369
logger.error(bad_states[state] + ": %r", error)
370
self.cleanup()
225
371
elif state == avahi.SERVER_RUNNING:
226
372
self.add()
373
else:
374
if error is None:
375
logger.debug("Unknown state: %r", state)
376
else:
377
logger.debug("Unknown state: %r: %r", state, error)
378
227
379
def activate(self):
228
380
"""Derived from the Avahi example code"""
229
381
if self.server is None:
230
382
self.server = dbus.Interface(
231
383
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
384
avahi.DBUS_PATH_SERVER,
385
follow_name_owner_changes=True),
233
386
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
387
self.server.connect_to_signal("StateChanged",
235
388
self.server_state_changed)
236
389
self.server_state_changed(self.server.GetState())
237
390
238
391
392
class AvahiServiceToSyslog(AvahiService):
393
def rename(self):
394
"""Add the new name to the syslog messages"""
395
ret = AvahiService.rename(self)
396
syslogger.setFormatter(logging.Formatter
397
('Mandos ({0}) [%(process)d]:'
398
' %(levelname)s: %(message)s'
399
.format(self.name)))
400
return ret
401
402
403
def timedelta_to_milliseconds(td):
404
"Convert a datetime.timedelta() to milliseconds"
405
return ((td.days * 24 * 60 * 60 * 1000)
406
+ (td.seconds * 1000)
407
+ (td.microseconds // 1000))
408
409
239
410
class Client(object):
240
411
"""A representation of a client host served by this server.
241
412
242
413
Attributes:
243
_approved: bool(); 'None' if not yet approved/disapproved
414
approved: bool(); 'None' if not yet approved/disapproved
244
415
approval_delay: datetime.timedelta(); Time to wait for approval
245
416
approval_duration: datetime.timedelta(); Duration of one approval
246
417
checker: subprocess.Popen(); a running checker process used
253
424
instance %(name)s can be used in the command.
254
425
checker_initiator_tag: a gobject event source tag, or None
255
426
created: datetime.datetime(); (UTC) object creation
427
client_structure: Object describing what attributes a client has
428
and is used for storing the client at exit
256
429
current_checker_command: string; current running checker_command
257
disable_hook: If set, called by disable() as disable_hook(self)
258
430
disable_initiator_tag: a gobject event source tag, or None
259
431
enabled: bool()
260
432
fingerprint: string (40 or 32 hexadecimal digits); used to
263
435
interval: datetime.timedelta(); How often to start a new checker
264
436
last_approval_request: datetime.datetime(); (UTC) or None
265
437
last_checked_ok: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
438
last_checker_status: integer between 0 and 255 reflecting exit
439
status of last checker. -1 reflects crashed
440
checker, -2 means no checker completed yet.
441
last_enabled: datetime.datetime(); (UTC) or None
267
442
name: string; from the config file, used in log messages and
268
443
D-Bus identifiers
269
444
secret: bytestring; sent verbatim (over TLS) to client
270
445
timeout: datetime.timedelta(); How long from last_checked_ok
271
446
until this client is disabled
447
extended_timeout: extra long timeout when secret has been sent
272
448
runtime_expansions: Allowed attributes for runtime expansion.
449
expires: datetime.datetime(); time (UTC) when a client will be
450
disabled, or None
451
server_settings: The server_settings dict from main()
273
452
"""
274
453
275
runtime_expansions = (u"approval_delay", u"approval_duration",
276
u"created", u"enabled", u"fingerprint",
277
u"host", u"interval", u"last_checked_ok",
278
u"last_enabled", u"name", u"timeout")
279
280
@staticmethod
281
def _timedelta_to_milliseconds(td):
282
"Convert a datetime.timedelta() to milliseconds"
283
return ((td.days * 24 * 60 * 60 * 1000)
284
+ (td.seconds * 1000)
285
+ (td.microseconds // 1000))
454
runtime_expansions = ("approval_delay", "approval_duration",
455
"created", "enabled", "expires",
456
"fingerprint", "host", "interval",
457
"last_approval_request", "last_checked_ok",
458
"last_enabled", "name", "timeout")
459
client_defaults = { "timeout": "PT5M",
460
"extended_timeout": "PT15M",
461
"interval": "PT2M",
462
"checker": "fping -q -- %%(host)s",
463
"host": "",
464
"approval_delay": "PT0S",
465
"approval_duration": "PT1S",
466
"approved_by_default": "True",
467
"enabled": "True",
468
}
286
469
287
470
def timeout_milliseconds(self):
288
471
"Return the 'timeout' attribute in milliseconds"
289
return self._timedelta_to_milliseconds(self.timeout)
472
return timedelta_to_milliseconds(self.timeout)
473
474
def extended_timeout_milliseconds(self):
475
"Return the 'extended_timeout' attribute in milliseconds"
476
return timedelta_to_milliseconds(self.extended_timeout)
290
477
291
478
def interval_milliseconds(self):
292
479
"Return the 'interval' attribute in milliseconds"
293
return self._timedelta_to_milliseconds(self.interval)
294
480
return timedelta_to_milliseconds(self.interval)
481
295
482
def approval_delay_milliseconds(self):
296
return self._timedelta_to_milliseconds(self.approval_delay)
297
298
def __init__(self, name = None, disable_hook=None, config=None):
299
"""Note: the 'checker' key in 'config' sets the
300
'checker_command' attribute and *not* the 'checker'
301
attribute."""
483
return timedelta_to_milliseconds(self.approval_delay)
484
485
@staticmethod
486
def config_parser(config):
487
"""Construct a new dict of client settings of this form:
488
{ client_name: {setting_name: value, ...}, ...}
489
with exceptions for any special settings as defined above.
490
NOTE: Must be a pure function. Must return the same result
491
value given the same arguments.
492
"""
493
settings = {}
494
for client_name in config.sections():
495
section = dict(config.items(client_name))
496
client = settings[client_name] = {}
497
498
client["host"] = section["host"]
499
# Reformat values from string types to Python types
500
client["approved_by_default"] = config.getboolean(
501
client_name, "approved_by_default")
502
client["enabled"] = config.getboolean(client_name,
503
"enabled")
504
505
client["fingerprint"] = (section["fingerprint"].upper()
506
.replace(" ", ""))
507
if "secret" in section:
508
client["secret"] = section["secret"].decode("base64")
509
elif "secfile" in section:
510
with open(os.path.expanduser(os.path.expandvars
511
(section["secfile"])),
512
"rb") as secfile:
513
client["secret"] = secfile.read()
514
else:
515
raise TypeError("No secret or secfile for section {0}"
516
.format(section))
517
client["timeout"] = string_to_delta(section["timeout"])
518
client["extended_timeout"] = string_to_delta(
519
section["extended_timeout"])
520
client["interval"] = string_to_delta(section["interval"])
521
client["approval_delay"] = string_to_delta(
522
section["approval_delay"])
523
client["approval_duration"] = string_to_delta(
524
section["approval_duration"])
525
client["checker_command"] = section["checker"]
526
client["last_approval_request"] = None
527
client["last_checked_ok"] = None
528
client["last_checker_status"] = -2
529
530
return settings
531
532
def __init__(self, settings, name = None, server_settings=None):
302
533
self.name = name
303
if config is None:
304
config = {}
305
logger.debug(u"Creating client %r", self.name)
534
if server_settings is None:
535
server_settings = {}
536
self.server_settings = server_settings
537
# adding all client settings
538
for setting, value in settings.iteritems():
539
setattr(self, setting, value)
540
541
if self.enabled:
542
if not hasattr(self, "last_enabled"):
543
self.last_enabled = datetime.datetime.utcnow()
544
if not hasattr(self, "expires"):
545
self.expires = (datetime.datetime.utcnow()
546
+ self.timeout)
547
else:
548
self.last_enabled = None
549
self.expires = None
550
551
logger.debug("Creating client %r", self.name)
306
552
# Uppercase and remove spaces from fingerprint for later
307
553
# comparison purposes with return value from the fingerprint()
308
554
# function
309
self.fingerprint = (config[u"fingerprint"].upper()
310
.replace(u" ", u""))
311
logger.debug(u" Fingerprint: %s", self.fingerprint)
312
if u"secret" in config:
313
self.secret = config[u"secret"].decode(u"base64")
314
elif u"secfile" in config:
315
with open(os.path.expanduser(os.path.expandvars
316
(config[u"secfile"])),
317
"rb") as secfile:
318
self.secret = secfile.read()
319
else:
320
raise TypeError(u"No secret or secfile for client %s"
321
% self.name)
322
self.host = config.get(u"host", u"")
323
self.created = datetime.datetime.utcnow()
324
self.enabled = False
325
self.last_approval_request = None
326
self.last_enabled = None
327
self.last_checked_ok = None
328
self.timeout = string_to_delta(config[u"timeout"])
329
self.interval = string_to_delta(config[u"interval"])
330
self.disable_hook = disable_hook
555
logger.debug(" Fingerprint: %s", self.fingerprint)
556
self.created = settings.get("created",
557
datetime.datetime.utcnow())
558
559
# attributes specific for this server instance
331
560
self.checker = None
332
561
self.checker_initiator_tag = None
333
562
self.disable_initiator_tag = None
334
563
self.checker_callback_tag = None
335
self.checker_command = config[u"checker"]
336
564
self.current_checker_command = None
337
self.last_connect = None
338
self._approved = None
339
self.approved_by_default = config.get(u"approved_by_default",
340
True)
565
self.approved = None
341
566
self.approvals_pending = 0
342
self.approval_delay = string_to_delta(
343
config[u"approval_delay"])
344
self.approval_duration = string_to_delta(
345
config[u"approval_duration"])
346
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
567
self.changedstate = (multiprocessing_manager
568
.Condition(multiprocessing_manager
569
.Lock()))
570
self.client_structure = [attr for attr in
571
self.__dict__.iterkeys()
572
if not attr.startswith("_")]
573
self.client_structure.append("client_structure")
574
575
for name, t in inspect.getmembers(type(self),
576
lambda obj:
577
isinstance(obj,
578
property)):
579
if not name.startswith("_"):
580
self.client_structure.append(name)
347
581
582
# Send notice to process children that client state has changed
348
583
def send_changedstate(self):
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
584
with self.changedstate:
585
self.changedstate.notify_all()
586
353
587
def enable(self):
354
588
"""Start this client's checker and timeout hooks"""
355
if getattr(self, u"enabled", False):
589
if getattr(self, "enabled", False):
356
590
# Already enabled
357
591
return
358
self.send_changedstate()
592
self.expires = datetime.datetime.utcnow() + self.timeout
593
self.enabled = True
359
594
self.last_enabled = datetime.datetime.utcnow()
595
self.init_checker()
596
self.send_changedstate()
597
598
def disable(self, quiet=True):
599
"""Disable this client."""
600
if not getattr(self, "enabled", False):
601
return False
602
if not quiet:
603
logger.info("Disabling client %s", self.name)
604
if getattr(self, "disable_initiator_tag", None) is not None:
605
gobject.source_remove(self.disable_initiator_tag)
606
self.disable_initiator_tag = None
607
self.expires = None
608
if getattr(self, "checker_initiator_tag", None) is not None:
609
gobject.source_remove(self.checker_initiator_tag)
610
self.checker_initiator_tag = None
611
self.stop_checker()
612
self.enabled = False
613
if not quiet:
614
self.send_changedstate()
615
# Do not run this again if called by a gobject.timeout_add
616
return False
617
618
def __del__(self):
619
self.disable()
620
621
def init_checker(self):
360
622
# Schedule a new checker to be started an 'interval' from now,
361
623
# and every interval from then on.
624
if self.checker_initiator_tag is not None:
625
gobject.source_remove(self.checker_initiator_tag)
362
626
self.checker_initiator_tag = (gobject.timeout_add
363
627
(self.interval_milliseconds(),
364
628
self.start_checker))
365
629
# Schedule a disable() when 'timeout' has passed
630
if self.disable_initiator_tag is not None:
631
gobject.source_remove(self.disable_initiator_tag)
366
632
self.disable_initiator_tag = (gobject.timeout_add
367
633
(self.timeout_milliseconds(),
368
634
self.disable))
369
self.enabled = True
370
635
# Also start a new checker *right now*.
371
636
self.start_checker()
372
637
373
def disable(self, quiet=True):
374
"""Disable this client."""
375
if not getattr(self, "enabled", False):
376
return False
377
if not quiet:
378
self.send_changedstate()
379
if not quiet:
380
logger.info(u"Disabling client %s", self.name)
381
if getattr(self, u"disable_initiator_tag", False):
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = None
384
if getattr(self, u"checker_initiator_tag", False):
385
gobject.source_remove(self.checker_initiator_tag)
386
self.checker_initiator_tag = None
387
self.stop_checker()
388
if self.disable_hook:
389
self.disable_hook(self)
390
self.enabled = False
391
# Do not run this again if called by a gobject.timeout_add
392
return False
393
394
def __del__(self):
395
self.disable_hook = None
396
self.disable()
397
398
638
def checker_callback(self, pid, condition, command):
399
639
"""The checker has completed, so take appropriate actions."""
400
640
self.checker_callback_tag = None
401
641
self.checker = None
402
642
if os.WIFEXITED(condition):
403
exitstatus = os.WEXITSTATUS(condition)
404
if exitstatus == 0:
405
logger.info(u"Checker for %(name)s succeeded",
643
self.last_checker_status = os.WEXITSTATUS(condition)
644
if self.last_checker_status == 0:
645
logger.info("Checker for %(name)s succeeded",
406
646
vars(self))
407
647
self.checked_ok()
408
648
else:
409
logger.info(u"Checker for %(name)s failed",
649
logger.info("Checker for %(name)s failed",
410
650
vars(self))
411
651
else:
412
logger.warning(u"Checker for %(name)s crashed?",
652
self.last_checker_status = -1
653
logger.warning("Checker for %(name)s crashed?",
413
654
vars(self))
414
655
415
656
def checked_ok(self):
416
"""Bump up the timeout for this client.
417
418
This should only be called when the client has been seen,
419
alive and well.
420
"""
657
"""Assert that the client has been seen, alive and well."""
421
658
self.last_checked_ok = datetime.datetime.utcnow()
422
gobject.source_remove(self.disable_initiator_tag)
423
self.disable_initiator_tag = (gobject.timeout_add
424
(self.timeout_milliseconds(),
425
self.disable))
659
self.last_checker_status = 0
660
self.bump_timeout()
661
662
def bump_timeout(self, timeout=None):
663
"""Bump up the timeout for this client."""
664
if timeout is None:
665
timeout = self.timeout
666
if self.disable_initiator_tag is not None:
667
gobject.source_remove(self.disable_initiator_tag)
668
self.disable_initiator_tag = None
669
if getattr(self, "enabled", False):
670
self.disable_initiator_tag = (gobject.timeout_add
671
(timedelta_to_milliseconds
672
(timeout), self.disable))
673
self.expires = datetime.datetime.utcnow() + timeout
426
674
427
675
def need_approval(self):
428
676
self.last_approval_request = datetime.datetime.utcnow()
433
681
If a checker already exists, leave it running and do
434
682
nothing."""
435
683
# The reason for not killing a running checker is that if we
436
# did that, then if a checker (for some reason) started
437
# running slowly and taking more than 'interval' time, the
438
# client would inevitably timeout, since no checker would get
439
# a chance to run to completion. If we instead leave running
684
# did that, and if a checker (for some reason) started running
685
# slowly and taking more than 'interval' time, then the client
686
# would inevitably timeout, since no checker would get a
687
# chance to run to completion. If we instead leave running
440
688
# checkers alone, the checker would have to take more time
441
689
# than 'timeout' for the client to be disabled, which is as it
442
690
# should be.
444
692
# If a checker exists, make sure it is not a zombie
445
693
try:
446
694
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
447
except (AttributeError, OSError), error:
448
if (isinstance(error, OSError)
449
and error.errno != errno.ECHILD):
450
raise error
695
except AttributeError:
696
pass
697
except OSError as error:
698
if error.errno != errno.ECHILD:
699
raise
451
700
else:
452
701
if pid:
453
logger.warning(u"Checker was a zombie")
702
logger.warning("Checker was a zombie")
454
703
gobject.source_remove(self.checker_callback_tag)
455
704
self.checker_callback(pid, status,
456
705
self.current_checker_command)
457
706
# Start a new checker if needed
458
707
if self.checker is None:
708
# Escape attributes for the shell
709
escaped_attrs = dict(
710
(attr, re.escape(unicode(getattr(self, attr))))
711
for attr in
712
self.runtime_expansions)
459
713
try:
460
# In case checker_command has exactly one % operator
461
command = self.checker_command % self.host
462
except TypeError:
463
# Escape attributes for the shell
464
escaped_attrs = dict(
465
(attr,
466
re.escape(unicode(str(getattr(self, attr, u"")),
467
errors=
468
u'replace')))
469
for attr in
470
self.runtime_expansions)
471
472
try:
473
command = self.checker_command % escaped_attrs
474
except TypeError, error:
475
logger.error(u'Could not format string "%s":'
476
u' %s', self.checker_command, error)
477
return True # Try again later
714
command = self.checker_command % escaped_attrs
715
except TypeError as error:
716
logger.error('Could not format string "%s"',
717
self.checker_command, exc_info=error)
718
return True # Try again later
478
719
self.current_checker_command = command
479
720
try:
480
logger.info(u"Starting checker %r for %s",
721
logger.info("Starting checker %r for %s",
481
722
command, self.name)
482
723
# We don't need to redirect stdout and stderr, since
483
724
# in normal mode, that is already done by daemon(),
484
725
# and in debug mode we don't want to. (Stdin is
485
726
# always replaced by /dev/null.)
727
# The exception is when not debugging but nevertheless
728
# running in the foreground; use the previously
729
# created wnull.
730
popen_args = {}
731
if (not self.server_settings["debug"]
732
and self.server_settings["foreground"]):
733
popen_args.update({"stdout": wnull,
734
"stderr": wnull })
486
735
self.checker = subprocess.Popen(command,
487
736
close_fds=True,
488
shell=True, cwd=u"/")
489
self.checker_callback_tag = (gobject.child_watch_add
490
(self.checker.pid,
491
self.checker_callback,
492
data=command))
493
# The checker may have completed before the gobject
494
# watch was added. Check for this.
737
shell=True, cwd="/",
738
**popen_args)
739
except OSError as error:
740
logger.error("Failed to start subprocess",
741
exc_info=error)
742
return True
743
self.checker_callback_tag = (gobject.child_watch_add
744
(self.checker.pid,
745
self.checker_callback,
746
data=command))
747
# The checker may have completed before the gobject
748
# watch was added. Check for this.
749
try:
495
750
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
496
if pid:
497
gobject.source_remove(self.checker_callback_tag)
498
self.checker_callback(pid, status, command)
499
except OSError, error:
500
logger.error(u"Failed to start subprocess: %s",
501
error)
751
except OSError as error:
752
if error.errno == errno.ECHILD:
753
# This should never happen
754
logger.error("Child process vanished",
755
exc_info=error)
756
return True
757
raise
758
if pid:
759
gobject.source_remove(self.checker_callback_tag)
760
self.checker_callback(pid, status, command)
502
761
# Re-run this periodically if run by gobject.timeout_add
503
762
return True
504
763
507
766
if self.checker_callback_tag:
508
767
gobject.source_remove(self.checker_callback_tag)
509
768
self.checker_callback_tag = None
510
if getattr(self, u"checker", None) is None:
769
if getattr(self, "checker", None) is None:
511
770
return
512
logger.debug(u"Stopping checker for %(name)s", vars(self))
771
logger.debug("Stopping checker for %(name)s", vars(self))
513
772
try:
514
os.kill(self.checker.pid, signal.SIGTERM)
773
self.checker.terminate()
515
774
#time.sleep(0.5)
516
775
#if self.checker.poll() is None:
517
# os.kill(self.checker.pid, signal.SIGKILL)
518
except OSError, error:
776
# self.checker.kill()
777
except OSError as error:
519
778
if error.errno != errno.ESRCH: # No such process
520
779
raise
521
780
self.checker = None
522
781
523
def dbus_service_property(dbus_interface, signature=u"v",
524
access=u"readwrite", byte_arrays=False):
782
783
def dbus_service_property(dbus_interface, signature="v",
784
access="readwrite", byte_arrays=False):
525
785
"""Decorators for marking methods of a DBusObjectWithProperties to
526
786
become properties on the D-Bus.
527
787
534
794
"""
535
795
# Encoding deeply encoded byte arrays is not supported yet by the
536
796
# "Set" method, so we fail early here:
537
if byte_arrays and signature != u"ay":
538
raise ValueError(u"Byte arrays not supported for non-'ay'"
539
u" signature %r" % signature)
797
if byte_arrays and signature != "ay":
798
raise ValueError("Byte arrays not supported for non-'ay'"
799
" signature {0!r}".format(signature))
540
800
def decorator(func):
541
801
func._dbus_is_property = True
542
802
func._dbus_interface = dbus_interface
543
803
func._dbus_signature = signature
544
804
func._dbus_access = access
545
805
func._dbus_name = func.__name__
546
if func._dbus_name.endswith(u"_dbus_property"):
806
if func._dbus_name.endswith("_dbus_property"):
547
807
func._dbus_name = func._dbus_name[:-14]
548
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
808
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
809
return func
810
return decorator
811
812
813
def dbus_interface_annotations(dbus_interface):
814
"""Decorator for marking functions returning interface annotations
815
816
Usage:
817
818
@dbus_interface_annotations("org.example.Interface")
819
def _foo(self): # Function name does not matter
820
return {"org.freedesktop.DBus.Deprecated": "true",
821
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
"false"}
823
"""
824
def decorator(func):
825
func._dbus_is_interface = True
826
func._dbus_interface = dbus_interface
827
func._dbus_name = dbus_interface
828
return func
829
return decorator
830
831
832
def dbus_annotations(annotations):
833
"""Decorator to annotate D-Bus methods, signals or properties
834
Usage:
835
836
@dbus_service_property("org.example.Interface", signature="b",
837
access="r")
838
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
839
"org.freedesktop.DBus.Property."
840
"EmitsChangedSignal": "false"})
841
def Property_dbus_property(self):
842
return dbus.Boolean(False)
843
"""
844
def decorator(func):
845
func._dbus_annotations = annotations
549
846
return func
550
847
return decorator
551
848
571
868
572
869
class DBusObjectWithProperties(dbus.service.Object):
573
870
"""A D-Bus object with properties.
574
871
575
872
Classes inheriting from this can use the dbus_service_property
576
873
decorator to expose methods as D-Bus properties. It exposes the
577
874
standard Get(), Set(), and GetAll() methods on the D-Bus.
578
875
"""
579
876
580
877
@staticmethod
581
def _is_dbus_property(obj):
582
return getattr(obj, u"_dbus_is_property", False)
878
def _is_dbus_thing(thing):
879
"""Returns a function testing if an attribute is a D-Bus thing
880
881
If called like _is_dbus_thing("method") it returns a function
882
suitable for use as predicate to inspect.getmembers().
883
"""
884
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
885
False)
583
886
584
def _get_all_dbus_properties(self):
887
def _get_all_dbus_things(self, thing):
585
888
"""Returns a generator of (name, attribute) pairs
586
889
"""
587
return ((prop._dbus_name, prop)
588
for name, prop in
589
inspect.getmembers(self, self._is_dbus_property))
890
return ((getattr(athing.__get__(self), "_dbus_name",
891
name),
892
athing.__get__(self))
893
for cls in self.__class__.__mro__
894
for name, athing in
895
inspect.getmembers(cls,
896
self._is_dbus_thing(thing)))
590
897
591
898
def _get_dbus_property(self, interface_name, property_name):
592
899
"""Returns a bound method if one exists which is a D-Bus
593
900
property with the specified name and interface.
594
901
"""
595
for name in (property_name,
596
property_name + u"_dbus_property"):
597
prop = getattr(self, name, None)
598
if (prop is None
599
or not self._is_dbus_property(prop)
600
or prop._dbus_name != property_name
601
or (interface_name and prop._dbus_interface
602
and interface_name != prop._dbus_interface)):
603
continue
604
return prop
902
for cls in self.__class__.__mro__:
903
for name, value in (inspect.getmembers
904
(cls,
905
self._is_dbus_thing("property"))):
906
if (value._dbus_name == property_name
907
and value._dbus_interface == interface_name):
908
return value.__get__(self)
909
605
910
# No such property
606
raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
+ interface_name + u"."
911
raise DBusPropertyNotFound(self.dbus_object_path + ":"
912
+ interface_name + "."
608
913
+ property_name)
609
914
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
611
out_signature=u"v")
915
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
916
out_signature="v")
612
917
def Get(self, interface_name, property_name):
613
918
"""Standard D-Bus property Get() method, see D-Bus standard.
614
919
"""
615
920
prop = self._get_dbus_property(interface_name, property_name)
616
if prop._dbus_access == u"write":
921
if prop._dbus_access == "write":
617
922
raise DBusPropertyAccessException(property_name)
618
923
value = prop()
619
if not hasattr(value, u"variant_level"):
924
if not hasattr(value, "variant_level"):
620
925
return value
621
926
return type(value)(value, variant_level=value.variant_level+1)
622
927
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
928
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
624
929
def Set(self, interface_name, property_name, value):
625
930
"""Standard D-Bus property Set() method, see D-Bus standard.
626
931
"""
627
932
prop = self._get_dbus_property(interface_name, property_name)
628
if prop._dbus_access == u"read":
933
if prop._dbus_access == "read":
629
934
raise DBusPropertyAccessException(property_name)
630
if prop._dbus_get_args_options[u"byte_arrays"]:
935
if prop._dbus_get_args_options["byte_arrays"]:
631
936
# The byte_arrays option is not supported yet on
632
937
# signatures other than "ay".
633
if prop._dbus_signature != u"ay":
634
raise ValueError
635
value = dbus.ByteArray(''.join(unichr(byte)
636
for byte in value))
938
if prop._dbus_signature != "ay":
939
raise ValueError("Byte arrays not supported for non-"
940
"'ay' signature {0!r}"
941
.format(prop._dbus_signature))
942
value = dbus.ByteArray(b''.join(chr(byte)
943
for byte in value))
637
944
prop(value)
638
945
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
946
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
947
out_signature="a{sv}")
641
948
def GetAll(self, interface_name):
642
949
"""Standard D-Bus property GetAll() method, see D-Bus
643
950
standard.
644
951
645
952
Note: Will not include properties with access="write".
646
953
"""
647
all = {}
648
for name, prop in self._get_all_dbus_properties():
954
properties = {}
955
for name, prop in self._get_all_dbus_things("property"):
649
956
if (interface_name
650
957
and interface_name != prop._dbus_interface):
651
958
# Interface non-empty but did not match
652
959
continue
653
960
# Ignore write-only properties
654
if prop._dbus_access == u"write":
961
if prop._dbus_access == "write":
655
962
continue
656
963
value = prop()
657
if not hasattr(value, u"variant_level"):
658
all[name] = value
964
if not hasattr(value, "variant_level"):
965
properties[name] = value
659
966
continue
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
967
properties[name] = type(value)(value, variant_level=
968
value.variant_level+1)
969
return dbus.Dictionary(properties, signature="sv")
663
970
664
971
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
665
out_signature=u"s",
972
out_signature="s",
666
973
path_keyword='object_path',
667
974
connection_keyword='connection')
668
975
def Introspect(self, object_path, connection):
669
"""Standard D-Bus method, overloaded to insert property tags.
976
"""Overloading of standard D-Bus method.
977
978
Inserts property tags and interface annotation tags.
670
979
"""
671
980
xmlstring = dbus.service.Object.Introspect(self, object_path,
672
981
connection)
673
982
try:
674
983
document = xml.dom.minidom.parseString(xmlstring)
675
984
def make_tag(document, name, prop):
676
e = document.createElement(u"property")
677
e.setAttribute(u"name", name)
678
e.setAttribute(u"type", prop._dbus_signature)
679
e.setAttribute(u"access", prop._dbus_access)
985
e = document.createElement("property")
986
e.setAttribute("name", name)
987
e.setAttribute("type", prop._dbus_signature)
988
e.setAttribute("access", prop._dbus_access)
680
989
return e
681
for if_tag in document.getElementsByTagName(u"interface"):
990
for if_tag in document.getElementsByTagName("interface"):
991
# Add property tags
682
992
for tag in (make_tag(document, name, prop)
683
993
for name, prop
684
in self._get_all_dbus_properties()
994
in self._get_all_dbus_things("property")
685
995
if prop._dbus_interface
686
== if_tag.getAttribute(u"name")):
996
== if_tag.getAttribute("name")):
687
997
if_tag.appendChild(tag)
998
# Add annotation tags
999
for typ in ("method", "signal", "property"):
1000
for tag in if_tag.getElementsByTagName(typ):
1001
annots = dict()
1002
for name, prop in (self.
1003
_get_all_dbus_things(typ)):
1004
if (name == tag.getAttribute("name")
1005
and prop._dbus_interface
1006
== if_tag.getAttribute("name")):
1007
annots.update(getattr
1008
(prop,
1009
"_dbus_annotations",
1010
{}))
1011
for name, value in annots.iteritems():
1012
ann_tag = document.createElement(
1013
"annotation")
1014
ann_tag.setAttribute("name", name)
1015
ann_tag.setAttribute("value", value)
1016
tag.appendChild(ann_tag)
1017
# Add interface annotation tags
1018
for annotation, value in dict(
1019
itertools.chain.from_iterable(
1020
annotations().iteritems()
1021
for name, annotations in
1022
self._get_all_dbus_things("interface")
1023
if name == if_tag.getAttribute("name")
1024
)).iteritems():
1025
ann_tag = document.createElement("annotation")
1026
ann_tag.setAttribute("name", annotation)
1027
ann_tag.setAttribute("value", value)
1028
if_tag.appendChild(ann_tag)
688
1029
# Add the names to the return values for the
689
1030
# "org.freedesktop.DBus.Properties" methods
690
if (if_tag.getAttribute(u"name")
691
== u"org.freedesktop.DBus.Properties"):
692
for cn in if_tag.getElementsByTagName(u"method"):
693
if cn.getAttribute(u"name") == u"Get":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"value")
698
elif cn.getAttribute(u"name") == u"GetAll":
699
for arg in cn.getElementsByTagName(u"arg"):
700
if (arg.getAttribute(u"direction")
701
== u"out"):
702
arg.setAttribute(u"name", u"props")
703
xmlstring = document.toxml(u"utf-8")
1031
if (if_tag.getAttribute("name")
1032
== "org.freedesktop.DBus.Properties"):
1033
for cn in if_tag.getElementsByTagName("method"):
1034
if cn.getAttribute("name") == "Get":
1035
for arg in cn.getElementsByTagName("arg"):
1036
if (arg.getAttribute("direction")
1037
== "out"):
1038
arg.setAttribute("name", "value")
1039
elif cn.getAttribute("name") == "GetAll":
1040
for arg in cn.getElementsByTagName("arg"):
1041
if (arg.getAttribute("direction")
1042
== "out"):
1043
arg.setAttribute("name", "props")
1044
xmlstring = document.toxml("utf-8")
704
1045
document.unlink()
705
1046
except (AttributeError, xml.dom.DOMException,
706
xml.parsers.expat.ExpatError), error:
707
logger.error(u"Failed to override Introspection method",
708
error)
1047
xml.parsers.expat.ExpatError) as error:
1048
logger.error("Failed to override Introspection method",
1049
exc_info=error)
709
1050
return xmlstring
710
1051
711
1052
1053
def datetime_to_dbus(dt, variant_level=0):
1054
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1055
if dt is None:
1056
return dbus.String("", variant_level = variant_level)
1057
return dbus.String(dt.isoformat(),
1058
variant_level=variant_level)
1059
1060
1061
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1062
"""A class decorator; applied to a subclass of
1063
dbus.service.Object, it will add alternate D-Bus attributes with
1064
interface names according to the "alt_interface_names" mapping.
1065
Usage:
1066
1067
@alternate_dbus_interfaces({"org.example.Interface":
1068
"net.example.AlternateInterface"})
1069
class SampleDBusObject(dbus.service.Object):
1070
@dbus.service.method("org.example.Interface")
1071
def SampleDBusMethod():
1072
pass
1073
1074
The above "SampleDBusMethod" on "SampleDBusObject" will be
1075
reachable via two interfaces: "org.example.Interface" and
1076
"net.example.AlternateInterface", the latter of which will have
1077
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1078
"true", unless "deprecate" is passed with a False value.
1079
1080
This works for methods and signals, and also for D-Bus properties
1081
(from DBusObjectWithProperties) and interfaces (from the
1082
dbus_interface_annotations decorator).
1083
"""
1084
def wrapper(cls):
1085
for orig_interface_name, alt_interface_name in (
1086
alt_interface_names.iteritems()):
1087
attr = {}
1088
interface_names = set()
1089
# Go though all attributes of the class
1090
for attrname, attribute in inspect.getmembers(cls):
1091
# Ignore non-D-Bus attributes, and D-Bus attributes
1092
# with the wrong interface name
1093
if (not hasattr(attribute, "_dbus_interface")
1094
or not attribute._dbus_interface
1095
.startswith(orig_interface_name)):
1096
continue
1097
# Create an alternate D-Bus interface name based on
1098
# the current name
1099
alt_interface = (attribute._dbus_interface
1100
.replace(orig_interface_name,
1101
alt_interface_name))
1102
interface_names.add(alt_interface)
1103
# Is this a D-Bus signal?
1104
if getattr(attribute, "_dbus_is_signal", False):
1105
# Extract the original non-method undecorated
1106
# function by black magic
1107
nonmethod_func = (dict(
1108
zip(attribute.func_code.co_freevars,
1109
attribute.__closure__))["func"]
1110
.cell_contents)
1111
# Create a new, but exactly alike, function
1112
# object, and decorate it to be a new D-Bus signal
1113
# with the alternate D-Bus interface name
1114
new_function = (dbus.service.signal
1115
(alt_interface,
1116
attribute._dbus_signature)
1117
(types.FunctionType(
1118
nonmethod_func.func_code,
1119
nonmethod_func.func_globals,
1120
nonmethod_func.func_name,
1121
nonmethod_func.func_defaults,
1122
nonmethod_func.func_closure)))
1123
# Copy annotations, if any
1124
try:
1125
new_function._dbus_annotations = (
1126
dict(attribute._dbus_annotations))
1127
except AttributeError:
1128
pass
1129
# Define a creator of a function to call both the
1130
# original and alternate functions, so both the
1131
# original and alternate signals gets sent when
1132
# the function is called
1133
def fixscope(func1, func2):
1134
"""This function is a scope container to pass
1135
func1 and func2 to the "call_both" function
1136
outside of its arguments"""
1137
def call_both(*args, **kwargs):
1138
"""This function will emit two D-Bus
1139
signals by calling func1 and func2"""
1140
func1(*args, **kwargs)
1141
func2(*args, **kwargs)
1142
return call_both
1143
# Create the "call_both" function and add it to
1144
# the class
1145
attr[attrname] = fixscope(attribute, new_function)
1146
# Is this a D-Bus method?
1147
elif getattr(attribute, "_dbus_is_method", False):
1148
# Create a new, but exactly alike, function
1149
# object. Decorate it to be a new D-Bus method
1150
# with the alternate D-Bus interface name. Add it
1151
# to the class.
1152
attr[attrname] = (dbus.service.method
1153
(alt_interface,
1154
attribute._dbus_in_signature,
1155
attribute._dbus_out_signature)
1156
(types.FunctionType
1157
(attribute.func_code,
1158
attribute.func_globals,
1159
attribute.func_name,
1160
attribute.func_defaults,
1161
attribute.func_closure)))
1162
# Copy annotations, if any
1163
try:
1164
attr[attrname]._dbus_annotations = (
1165
dict(attribute._dbus_annotations))
1166
except AttributeError:
1167
pass
1168
# Is this a D-Bus property?
1169
elif getattr(attribute, "_dbus_is_property", False):
1170
# Create a new, but exactly alike, function
1171
# object, and decorate it to be a new D-Bus
1172
# property with the alternate D-Bus interface
1173
# name. Add it to the class.
1174
attr[attrname] = (dbus_service_property
1175
(alt_interface,
1176
attribute._dbus_signature,
1177
attribute._dbus_access,
1178
attribute
1179
._dbus_get_args_options
1180
["byte_arrays"])
1181
(types.FunctionType
1182
(attribute.func_code,
1183
attribute.func_globals,
1184
attribute.func_name,
1185
attribute.func_defaults,
1186
attribute.func_closure)))
1187
# Copy annotations, if any
1188
try:
1189
attr[attrname]._dbus_annotations = (
1190
dict(attribute._dbus_annotations))
1191
except AttributeError:
1192
pass
1193
# Is this a D-Bus interface?
1194
elif getattr(attribute, "_dbus_is_interface", False):
1195
# Create a new, but exactly alike, function
1196
# object. Decorate it to be a new D-Bus interface
1197
# with the alternate D-Bus interface name. Add it
1198
# to the class.
1199
attr[attrname] = (dbus_interface_annotations
1200
(alt_interface)
1201
(types.FunctionType
1202
(attribute.func_code,
1203
attribute.func_globals,
1204
attribute.func_name,
1205
attribute.func_defaults,
1206
attribute.func_closure)))
1207
if deprecate:
1208
# Deprecate all alternate interfaces
1209
iname="_AlternateDBusNames_interface_annotation{0}"
1210
for interface_name in interface_names:
1211
@dbus_interface_annotations(interface_name)
1212
def func(self):
1213
return { "org.freedesktop.DBus.Deprecated":
1214
"true" }
1215
# Find an unused name
1216
for aname in (iname.format(i)
1217
for i in itertools.count()):
1218
if aname not in attr:
1219
attr[aname] = func
1220
break
1221
if interface_names:
1222
# Replace the class with a new subclass of it with
1223
# methods, signals, etc. as created above.
1224
cls = type(b"{0}Alternate".format(cls.__name__),
1225
(cls,), attr)
1226
return cls
1227
return wrapper
1228
1229
1230
@alternate_dbus_interfaces({"se.recompile.Mandos":
1231
"se.bsnet.fukt.Mandos"})
712
1232
class ClientDBus(Client, DBusObjectWithProperties):
713
1233
"""A Client class using D-Bus
714
1234
718
1238
"""
719
1239
720
1240
runtime_expansions = (Client.runtime_expansions
721
+ (u"dbus_object_path",))
1241
+ ("dbus_object_path",))
722
1242
723
1243
# dbus.service.Object doesn't use super(), so we can't either.
724
1244
725
1245
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
727
1246
self.bus = bus
728
1247
Client.__init__(self, *args, **kwargs)
729
1248
# Only now, when this client is initialized, can it show up on
730
1249
# the D-Bus
731
1250
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
1251
{ord("."): ord("_"),
1252
ord("-"): ord("_")})
734
1253
self.dbus_object_path = (dbus.ObjectPath
735
(u"/clients/" + client_object_name))
1254
("/clients/" + client_object_name))
736
1255
DBusObjectWithProperties.__init__(self, self.bus,
737
1256
self.dbus_object_path)
738
739
def _get_approvals_pending(self):
740
return self._approvals_pending
741
def _set_approvals_pending(self, value):
742
old_value = self._approvals_pending
743
self._approvals_pending = value
744
bval = bool(value)
745
if (hasattr(self, "dbus_object_path")
746
and bval is not bool(old_value)):
747
dbus_bool = dbus.Boolean(bval, variant_level=1)
748
self.PropertyChanged(dbus.String(u"ApprovalPending"),
749
dbus_bool)
750
751
approvals_pending = property(_get_approvals_pending,
752
_set_approvals_pending)
753
del _get_approvals_pending, _set_approvals_pending
754
755
@staticmethod
756
def _datetime_to_dbus(dt, variant_level=0):
757
"""Convert a UTC datetime.datetime() to a D-Bus type."""
758
return dbus.String(dt.isoformat(),
759
variant_level=variant_level)
760
761
def enable(self):
762
oldstate = getattr(self, u"enabled", False)
763
r = Client.enable(self)
764
if oldstate != self.enabled:
765
# Emit D-Bus signals
766
self.PropertyChanged(dbus.String(u"Enabled"),
767
dbus.Boolean(True, variant_level=1))
768
self.PropertyChanged(
769
dbus.String(u"LastEnabled"),
770
self._datetime_to_dbus(self.last_enabled,
771
variant_level=1))
772
return r
773
774
def disable(self, quiet = False):
775
oldstate = getattr(self, u"enabled", False)
776
r = Client.disable(self, quiet=quiet)
777
if not quiet and oldstate != self.enabled:
778
# Emit D-Bus signal
779
self.PropertyChanged(dbus.String(u"Enabled"),
780
dbus.Boolean(False, variant_level=1))
781
return r
1257
1258
def notifychangeproperty(transform_func,
1259
dbus_name, type_func=lambda x: x,
1260
variant_level=1):
1261
""" Modify a variable so that it's a property which announces
1262
its changes to DBus.
1263
1264
transform_fun: Function that takes a value and a variant_level
1265
and transforms it to a D-Bus type.
1266
dbus_name: D-Bus name of the variable
1267
type_func: Function that transform the value before sending it
1268
to the D-Bus. Default: no transform
1269
variant_level: D-Bus variant level. Default: 1
1270
"""
1271
attrname = "_{0}".format(dbus_name)
1272
def setter(self, value):
1273
if hasattr(self, "dbus_object_path"):
1274
if (not hasattr(self, attrname) or
1275
type_func(getattr(self, attrname, None))
1276
!= type_func(value)):
1277
dbus_value = transform_func(type_func(value),
1278
variant_level
1279
=variant_level)
1280
self.PropertyChanged(dbus.String(dbus_name),
1281
dbus_value)
1282
setattr(self, attrname, value)
1283
1284
return property(lambda self: getattr(self, attrname), setter)
1285
1286
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1287
approvals_pending = notifychangeproperty(dbus.Boolean,
1288
"ApprovalPending",
1289
type_func = bool)
1290
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1291
last_enabled = notifychangeproperty(datetime_to_dbus,
1292
"LastEnabled")
1293
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1294
type_func = lambda checker:
1295
checker is not None)
1296
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1297
"LastCheckedOK")
1298
last_checker_status = notifychangeproperty(dbus.Int16,
1299
"LastCheckerStatus")
1300
last_approval_request = notifychangeproperty(
1301
datetime_to_dbus, "LastApprovalRequest")
1302
approved_by_default = notifychangeproperty(dbus.Boolean,
1303
"ApprovedByDefault")
1304
approval_delay = notifychangeproperty(dbus.UInt64,
1305
"ApprovalDelay",
1306
type_func =
1307
timedelta_to_milliseconds)
1308
approval_duration = notifychangeproperty(
1309
dbus.UInt64, "ApprovalDuration",
1310
type_func = timedelta_to_milliseconds)
1311
host = notifychangeproperty(dbus.String, "Host")
1312
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1313
type_func =
1314
timedelta_to_milliseconds)
1315
extended_timeout = notifychangeproperty(
1316
dbus.UInt64, "ExtendedTimeout",
1317
type_func = timedelta_to_milliseconds)
1318
interval = notifychangeproperty(dbus.UInt64,
1319
"Interval",
1320
type_func =
1321
timedelta_to_milliseconds)
1322
checker_command = notifychangeproperty(dbus.String, "Checker")
1323
1324
del notifychangeproperty
782
1325
783
1326
def __del__(self, *args, **kwargs):
784
1327
try:
785
1328
self.remove_from_connection()
786
1329
except LookupError:
787
1330
pass
788
if hasattr(DBusObjectWithProperties, u"__del__"):
1331
if hasattr(DBusObjectWithProperties, "__del__"):
789
1332
DBusObjectWithProperties.__del__(self, *args, **kwargs)
790
1333
Client.__del__(self, *args, **kwargs)
791
1334
793
1336
*args, **kwargs):
794
1337
self.checker_callback_tag = None
795
1338
self.checker = None
796
# Emit D-Bus signal
797
self.PropertyChanged(dbus.String(u"CheckerRunning"),
798
dbus.Boolean(False, variant_level=1))
799
1339
if os.WIFEXITED(condition):
800
1340
exitstatus = os.WEXITSTATUS(condition)
801
1341
# Emit D-Bus signal
811
1351
return Client.checker_callback(self, pid, condition, command,
812
1352
*args, **kwargs)
813
1353
814
def checked_ok(self, *args, **kwargs):
815
r = Client.checked_ok(self, *args, **kwargs)
816
# Emit D-Bus signal
817
self.PropertyChanged(
818
dbus.String(u"LastCheckedOK"),
819
(self._datetime_to_dbus(self.last_checked_ok,
820
variant_level=1)))
821
return r
822
823
def need_approval(self, *args, **kwargs):
824
r = Client.need_approval(self, *args, **kwargs)
825
# Emit D-Bus signal
826
self.PropertyChanged(
827
dbus.String(u"LastApprovalRequest"),
828
(self._datetime_to_dbus(self.last_approval_request,
829
variant_level=1)))
830
return r
831
832
1354
def start_checker(self, *args, **kwargs):
833
old_checker = self.checker
834
if self.checker is not None:
835
old_checker_pid = self.checker.pid
836
else:
837
old_checker_pid = None
1355
old_checker_pid = getattr(self.checker, "pid", None)
838
1356
r = Client.start_checker(self, *args, **kwargs)
839
1357
# Only if new checker process was started
840
1358
if (self.checker is not None
841
1359
and old_checker_pid != self.checker.pid):
842
1360
# Emit D-Bus signal
843
1361
self.CheckerStarted(self.current_checker_command)
844
self.PropertyChanged(
845
dbus.String(u"CheckerRunning"),
846
dbus.Boolean(True, variant_level=1))
847
1362
return r
848
1363
849
def stop_checker(self, *args, **kwargs):
850
old_checker = getattr(self, u"checker", None)
851
r = Client.stop_checker(self, *args, **kwargs)
852
if (old_checker is not None
853
and getattr(self, u"checker", None) is None):
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
855
dbus.Boolean(False, variant_level=1))
856
return r
857
858
1364
def _reset_approved(self):
859
self._approved = None
1365
self.approved = None
860
1366
return False
861
1367
862
1368
def approve(self, value=True):
863
self.send_changedstate()
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
1369
self.approved = value
1370
gobject.timeout_add(timedelta_to_milliseconds
866
1371
(self.approval_duration),
867
1372
self._reset_approved)
868
1373
self.send_changedstate()
869
1374
870
1375
## D-Bus methods, signals & properties
871
_interface = u"se.bsnet.fukt.Mandos.Client"
1376
_interface = "se.recompile.Mandos.Client"
1377
1378
## Interfaces
1379
1380
@dbus_interface_annotations(_interface)
1381
def _foo(self):
1382
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1383
"false"}
872
1384
873
1385
## Signals
874
1386
875
1387
# CheckerCompleted - signal
876
@dbus.service.signal(_interface, signature=u"nxs")
1388
@dbus.service.signal(_interface, signature="nxs")
877
1389
def CheckerCompleted(self, exitcode, waitstatus, command):
878
1390
"D-Bus signal"
879
1391
pass
880
1392
881
1393
# CheckerStarted - signal
882
@dbus.service.signal(_interface, signature=u"s")
1394
@dbus.service.signal(_interface, signature="s")
883
1395
def CheckerStarted(self, command):
884
1396
"D-Bus signal"
885
1397
pass
886
1398
887
1399
# PropertyChanged - signal
888
@dbus.service.signal(_interface, signature=u"sv")
1400
@dbus.service.signal(_interface, signature="sv")
889
1401
def PropertyChanged(self, property, value):
890
1402
"D-Bus signal"
891
1403
pass
900
1412
pass
901
1413
902
1414
# Rejected - signal
903
@dbus.service.signal(_interface, signature=u"s")
1415
@dbus.service.signal(_interface, signature="s")
904
1416
def Rejected(self, reason):
905
1417
"D-Bus signal"
906
1418
pass
907
1419
908
1420
# NeedApproval - signal
909
@dbus.service.signal(_interface, signature=u"tb")
1421
@dbus.service.signal(_interface, signature="tb")
910
1422
def NeedApproval(self, timeout, default):
911
1423
"D-Bus signal"
912
1424
return self.need_approval()
914
1426
## Methods
915
1427
916
1428
# Approve - method
917
@dbus.service.method(_interface, in_signature=u"b")
1429
@dbus.service.method(_interface, in_signature="b")
918
1430
def Approve(self, value):
919
1431
self.approve(value)
920
1432
921
1433
# CheckedOK - method
922
1434
@dbus.service.method(_interface)
923
1435
def CheckedOK(self):
924
return self.checked_ok()
1436
self.checked_ok()
925
1437
926
1438
# Enable - method
927
1439
@dbus.service.method(_interface)
949
1461
## Properties
950
1462
951
1463
# ApprovalPending - property
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
1464
@dbus_service_property(_interface, signature="b", access="read")
953
1465
def ApprovalPending_dbus_property(self):
954
1466
return dbus.Boolean(bool(self.approvals_pending))
955
1467
956
1468
# ApprovedByDefault - property
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
1469
@dbus_service_property(_interface, signature="b",
1470
access="readwrite")
959
1471
def ApprovedByDefault_dbus_property(self, value=None):
960
1472
if value is None: # get
961
1473
return dbus.Boolean(self.approved_by_default)
962
1474
self.approved_by_default = bool(value)
963
# Emit D-Bus signal
964
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
dbus.Boolean(value, variant_level=1))
966
1475
967
1476
# ApprovalDelay - property
968
@dbus_service_property(_interface, signature=u"t",
969
access=u"readwrite")
1477
@dbus_service_property(_interface, signature="t",
1478
access="readwrite")
970
1479
def ApprovalDelay_dbus_property(self, value=None):
971
1480
if value is None: # get
972
1481
return dbus.UInt64(self.approval_delay_milliseconds())
973
1482
self.approval_delay = datetime.timedelta(0, 0, 0, value)
974
# Emit D-Bus signal
975
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
dbus.UInt64(value, variant_level=1))
977
1483
978
1484
# ApprovalDuration - property
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
1485
@dbus_service_property(_interface, signature="t",
1486
access="readwrite")
981
1487
def ApprovalDuration_dbus_property(self, value=None):
982
1488
if value is None: # get
983
return dbus.UInt64(self._timedelta_to_milliseconds(
1489
return dbus.UInt64(timedelta_to_milliseconds(
984
1490
self.approval_duration))
985
1491
self.approval_duration = datetime.timedelta(0, 0, 0, value)
986
# Emit D-Bus signal
987
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
dbus.UInt64(value, variant_level=1))
989
1492
990
1493
# Name - property
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
1494
@dbus_service_property(_interface, signature="s", access="read")
992
1495
def Name_dbus_property(self):
993
1496
return dbus.String(self.name)
994
1497
995
1498
# Fingerprint - property
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
1499
@dbus_service_property(_interface, signature="s", access="read")
997
1500
def Fingerprint_dbus_property(self):
998
1501
return dbus.String(self.fingerprint)
999
1502
1000
1503
# Host - property
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
1504
@dbus_service_property(_interface, signature="s",
1505
access="readwrite")
1003
1506
def Host_dbus_property(self, value=None):
1004
1507
if value is None: # get
1005
1508
return dbus.String(self.host)
1006
self.host = value
1007
# Emit D-Bus signal
1008
self.PropertyChanged(dbus.String(u"Host"),
1009
dbus.String(value, variant_level=1))
1509
self.host = unicode(value)
1010
1510
1011
1511
# Created - property
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
1512
@dbus_service_property(_interface, signature="s", access="read")
1013
1513
def Created_dbus_property(self):
1014
return dbus.String(self._datetime_to_dbus(self.created))
1514
return datetime_to_dbus(self.created)
1015
1515
1016
1516
# LastEnabled - property
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
1517
@dbus_service_property(_interface, signature="s", access="read")
1018
1518
def LastEnabled_dbus_property(self):
1019
if self.last_enabled is None:
1020
return dbus.String(u"")
1021
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1519
return datetime_to_dbus(self.last_enabled)
1022
1520
1023
1521
# Enabled - property
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
1522
@dbus_service_property(_interface, signature="b",
1523
access="readwrite")
1026
1524
def Enabled_dbus_property(self, value=None):
1027
1525
if value is None: # get
1028
1526
return dbus.Boolean(self.enabled)
1032
1530
self.disable()
1033
1531
1034
1532
# LastCheckedOK - property
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
1533
@dbus_service_property(_interface, signature="s",
1534
access="readwrite")
1037
1535
def LastCheckedOK_dbus_property(self, value=None):
1038
1536
if value is not None:
1039
1537
self.checked_ok()
1040
1538
return
1041
if self.last_checked_ok is None:
1042
return dbus.String(u"")
1043
return dbus.String(self._datetime_to_dbus(self
1044
.last_checked_ok))
1539
return datetime_to_dbus(self.last_checked_ok)
1540
1541
# LastCheckerStatus - property
1542
@dbus_service_property(_interface, signature="n",
1543
access="read")
1544
def LastCheckerStatus_dbus_property(self):
1545
return dbus.Int16(self.last_checker_status)
1546
1547
# Expires - property
1548
@dbus_service_property(_interface, signature="s", access="read")
1549
def Expires_dbus_property(self):
1550
return datetime_to_dbus(self.expires)
1045
1551
1046
1552
# LastApprovalRequest - property
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
1553
@dbus_service_property(_interface, signature="s", access="read")
1048
1554
def LastApprovalRequest_dbus_property(self):
1049
if self.last_approval_request is None:
1050
return dbus.String(u"")
1051
return dbus.String(self.
1052
_datetime_to_dbus(self
1053
.last_approval_request))
1555
return datetime_to_dbus(self.last_approval_request)
1054
1556
1055
1557
# Timeout - property
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
1558
@dbus_service_property(_interface, signature="t",
1559
access="readwrite")
1058
1560
def Timeout_dbus_property(self, value=None):
1059
1561
if value is None: # get
1060
1562
return dbus.UInt64(self.timeout_milliseconds())
1563
old_timeout = self.timeout
1061
1564
self.timeout = datetime.timedelta(0, 0, 0, value)
1062
# Emit D-Bus signal
1063
self.PropertyChanged(dbus.String(u"Timeout"),
1064
dbus.UInt64(value, variant_level=1))
1065
if getattr(self, u"disable_initiator_tag", None) is None:
1066
return
1067
# Reschedule timeout
1068
gobject.source_remove(self.disable_initiator_tag)
1069
self.disable_initiator_tag = None
1070
time_to_die = (self.
1071
_timedelta_to_milliseconds((self
1072
.last_checked_ok
1073
+ self.timeout)
1074
- datetime.datetime
1075
.utcnow()))
1076
if time_to_die <= 0:
1077
# The timeout has passed
1078
self.disable()
1079
else:
1080
self.disable_initiator_tag = (gobject.timeout_add
1081
(time_to_die, self.disable))
1565
# Reschedule disabling
1566
if self.enabled:
1567
now = datetime.datetime.utcnow()
1568
self.expires += self.timeout - old_timeout
1569
if self.expires <= now:
1570
# The timeout has passed
1571
self.disable()
1572
else:
1573
if (getattr(self, "disable_initiator_tag", None)
1574
is None):
1575
return
1576
gobject.source_remove(self.disable_initiator_tag)
1577
self.disable_initiator_tag = (
1578
gobject.timeout_add(
1579
timedelta_to_milliseconds(self.expires - now),
1580
self.disable))
1581
1582
# ExtendedTimeout - property
1583
@dbus_service_property(_interface, signature="t",
1584
access="readwrite")
1585
def ExtendedTimeout_dbus_property(self, value=None):
1586
if value is None: # get
1587
return dbus.UInt64(self.extended_timeout_milliseconds())
1588
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1082
1589
1083
1590
# Interval - property
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
1591
@dbus_service_property(_interface, signature="t",
1592
access="readwrite")
1086
1593
def Interval_dbus_property(self, value=None):
1087
1594
if value is None: # get
1088
1595
return dbus.UInt64(self.interval_milliseconds())
1089
1596
self.interval = datetime.timedelta(0, 0, 0, value)
1090
# Emit D-Bus signal
1091
self.PropertyChanged(dbus.String(u"Interval"),
1092
dbus.UInt64(value, variant_level=1))
1093
if getattr(self, u"checker_initiator_tag", None) is None:
1597
if getattr(self, "checker_initiator_tag", None) is None:
1094
1598
return
1095
# Reschedule checker run
1096
gobject.source_remove(self.checker_initiator_tag)
1097
self.checker_initiator_tag = (gobject.timeout_add
1098
(value, self.start_checker))
1099
self.start_checker() # Start one now, too
1100
1599
if self.enabled:
1600
# Reschedule checker run
1601
gobject.source_remove(self.checker_initiator_tag)
1602
self.checker_initiator_tag = (gobject.timeout_add
1603
(value, self.start_checker))
1604
self.start_checker() # Start one now, too
1605
1101
1606
# Checker - property
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
1607
@dbus_service_property(_interface, signature="s",
1608
access="readwrite")
1104
1609
def Checker_dbus_property(self, value=None):
1105
1610
if value is None: # get
1106
1611
return dbus.String(self.checker_command)
1107
self.checker_command = value
1108
# Emit D-Bus signal
1109
self.PropertyChanged(dbus.String(u"Checker"),
1110
dbus.String(self.checker_command,
1111
variant_level=1))
1612
self.checker_command = unicode(value)
1112
1613
1113
1614
# CheckerRunning - property
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
1615
@dbus_service_property(_interface, signature="b",
1616
access="readwrite")
1116
1617
def CheckerRunning_dbus_property(self, value=None):
1117
1618
if value is None: # get
1118
1619
return dbus.Boolean(self.checker is not None)
1122
1623
self.stop_checker()
1123
1624
1124
1625
# ObjectPath - property
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
1626
@dbus_service_property(_interface, signature="o", access="read")
1126
1627
def ObjectPath_dbus_property(self):
1127
1628
return self.dbus_object_path # is already a dbus.ObjectPath
1128
1629
1129
1630
# Secret = property
1130
@dbus_service_property(_interface, signature=u"ay",
1131
access=u"write", byte_arrays=True)
1631
@dbus_service_property(_interface, signature="ay",
1632
access="write", byte_arrays=True)
1132
1633
def Secret_dbus_property(self, value):
1133
1634
self.secret = str(value)
1134
1635
1141
1642
self._pipe.send(('init', fpr, address))
1142
1643
if not self._pipe.recv():
1143
1644
raise KeyError()
1144
1645
1145
1646
def __getattribute__(self, name):
1146
if(name == '_pipe'):
1647
if name == '_pipe':
1147
1648
return super(ProxyClient, self).__getattribute__(name)
1148
1649
self._pipe.send(('getattr', name))
1149
1650
data = self._pipe.recv()
1154
1655
self._pipe.send(('funcall', name, args, kwargs))
1155
1656
return self._pipe.recv()[1]
1156
1657
return func
1157
1658
1158
1659
def __setattr__(self, name, value):
1159
if(name == '_pipe'):
1660
if name == '_pipe':
1160
1661
return super(ProxyClient, self).__setattr__(name, value)
1161
1662
self._pipe.send(('setattr', name, value))
1162
1663
1169
1670
1170
1671
def handle(self):
1171
1672
with contextlib.closing(self.server.child_pipe) as child_pipe:
1172
logger.info(u"TCP connection from: %s",
1673
logger.info("TCP connection from: %s",
1173
1674
unicode(self.client_address))
1174
logger.debug(u"Pipe FD: %d",
1675
logger.debug("Pipe FD: %d",
1175
1676
self.server.child_pipe.fileno())
1176
1677
1177
1678
session = (gnutls.connection
1178
1679
.ClientSession(self.request,
1179
1680
gnutls.connection
1180
1681
.X509Credentials()))
1181
1682
1182
1683
# Note: gnutls.connection.X509Credentials is really a
1183
1684
# generic GnuTLS certificate credentials object so long as
1184
1685
# no X.509 keys are added to it. Therefore, we can use it
1185
1686
# here despite using OpenPGP certificates.
1186
1187
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1188
# u"+AES-256-CBC", u"+SHA1",
1189
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1190
# u"+DHE-DSS"))
1687
1688
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1689
# "+AES-256-CBC", "+SHA1",
1690
# "+COMP-NULL", "+CTYPE-OPENPGP",
1691
# "+DHE-DSS"))
1191
1692
# Use a fallback default, since this MUST be set.
1192
1693
priority = self.server.gnutls_priority
1193
1694
if priority is None:
1194
priority = u"NORMAL"
1695
priority = "NORMAL"
1195
1696
(gnutls.library.functions
1196
1697
.gnutls_priority_set_direct(session._c_object,
1197
1698
priority, None))
1198
1699
1199
1700
# Start communication using the Mandos protocol
1200
1701
# Get protocol number
1201
1702
line = self.request.makefile().readline()
1202
logger.debug(u"Protocol version: %r", line)
1703
logger.debug("Protocol version: %r", line)
1203
1704
try:
1204
1705
if int(line.strip().split()[0]) > 1:
1205
raise RuntimeError
1206
except (ValueError, IndexError, RuntimeError), error:
1207
logger.error(u"Unknown protocol version: %s", error)
1706
raise RuntimeError(line)
1707
except (ValueError, IndexError, RuntimeError) as error:
1708
logger.error("Unknown protocol version: %s", error)
1208
1709
return
1209
1710
1210
1711
# Start GnuTLS connection
1211
1712
try:
1212
1713
session.handshake()
1213
except gnutls.errors.GNUTLSError, error:
1214
logger.warning(u"Handshake failed: %s", error)
1714
except gnutls.errors.GNUTLSError as error:
1715
logger.warning("Handshake failed: %s", error)
1215
1716
# Do not run session.bye() here: the session is not
1216
1717
# established. Just abandon the request.
1217
1718
return
1218
logger.debug(u"Handshake succeeded")
1219
1719
logger.debug("Handshake succeeded")
1720
1220
1721
approval_required = False
1221
1722
try:
1222
1723
try:
1223
1724
fpr = self.fingerprint(self.peer_certificate
1224
1725
(session))
1225
except (TypeError, gnutls.errors.GNUTLSError), error:
1226
logger.warning(u"Bad certificate: %s", error)
1726
except (TypeError,
1727
gnutls.errors.GNUTLSError) as error:
1728
logger.warning("Bad certificate: %s", error)
1227
1729
return
1228
logger.debug(u"Fingerprint: %s", fpr)
1229
1730
logger.debug("Fingerprint: %s", fpr)
1731
1230
1732
try:
1231
1733
client = ProxyClient(child_pipe, fpr,
1232
1734
self.client_address)
1240
1742
1241
1743
while True:
1242
1744
if not client.enabled:
1243
logger.warning(u"Client %s is disabled",
1745
logger.info("Client %s is disabled",
1244
1746
client.name)
1245
1747
if self.server.use_dbus:
1246
1748
# Emit D-Bus signal
1247
client.Rejected("Disabled")
1749
client.Rejected("Disabled")
1248
1750
return
1249
1751
1250
if client._approved or not client.approval_delay:
1752
if client.approved or not client.approval_delay:
1251
1753
#We are approved or approval is disabled
1252
1754
break
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
1755
elif client.approved is None:
1756
logger.info("Client %s needs approval",
1255
1757
client.name)
1256
1758
if self.server.use_dbus:
1257
1759
# Emit D-Bus signal
1259
1761
client.approval_delay_milliseconds(),
1260
1762
client.approved_by_default)
1261
1763
else:
1262
logger.warning(u"Client %s was not approved",
1764
logger.warning("Client %s was not approved",
1263
1765
client.name)
1264
1766
if self.server.use_dbus:
1265
1767
# Emit D-Bus signal
1267
1769
return
1268
1770
1269
1771
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
1271
1772
time = datetime.datetime.now()
1272
1773
client.changedstate.acquire()
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1774
client.changedstate.wait(
1775
float(timedelta_to_milliseconds(delay)
1776
/ 1000))
1274
1777
client.changedstate.release()
1275
1778
time2 = datetime.datetime.now()
1276
1779
if (time2 - time) >= delay:
1291
1794
while sent_size < len(client.secret):
1292
1795
try:
1293
1796
sent = session.send(client.secret[sent_size:])
1294
except (gnutls.errors.GNUTLSError), error:
1295
logger.warning("gnutls send failed")
1797
except gnutls.errors.GNUTLSError as error:
1798
logger.warning("gnutls send failed",
1799
exc_info=error)
1296
1800
return
1297
logger.debug(u"Sent: %d, remaining: %d",
1801
logger.debug("Sent: %d, remaining: %d",
1298
1802
sent, len(client.secret)
1299
1803
- (sent_size + sent))
1300
1804
sent_size += sent
1301
1302
logger.info(u"Sending secret to %s", client.name)
1303
# bump the timeout as if seen
1304
client.checked_ok()
1805
1806
logger.info("Sending secret to %s", client.name)
1807
# bump the timeout using extended_timeout
1808
client.bump_timeout(client.extended_timeout)
1305
1809
if self.server.use_dbus:
1306
1810
# Emit D-Bus signal
1307
1811
client.GotSecret()
1311
1815
client.approvals_pending -= 1
1312
1816
try:
1313
1817
session.bye()
1314
except (gnutls.errors.GNUTLSError), error:
1315
logger.warning("GnuTLS bye failed")
1818
except gnutls.errors.GNUTLSError as error:
1819
logger.warning("GnuTLS bye failed",
1820
exc_info=error)
1316
1821
1317
1822
@staticmethod
1318
1823
def peer_certificate(session):
1328
1833
.gnutls_certificate_get_peers
1329
1834
(session._c_object, ctypes.byref(list_size)))
1330
1835
if not bool(cert_list) and list_size.value != 0:
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
1836
raise gnutls.errors.GNUTLSError("error getting peer"
1837
" certificate")
1333
1838
if list_size.value == 0:
1334
1839
return None
1335
1840
cert = cert_list[0]
1361
1866
if crtverify.value != 0:
1362
1867
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1363
1868
raise (gnutls.errors.CertificateSecurityError
1364
(u"Verify failed"))
1869
("Verify failed"))
1365
1870
# New buffer for the fingerprint
1366
1871
buf = ctypes.create_string_buffer(20)
1367
1872
buf_len = ctypes.c_size_t()
1374
1879
# Convert the buffer to a Python bytestring
1375
1880
fpr = ctypes.string_at(buf, buf_len.value)
1376
1881
# Convert the bytestring to hexadecimal notation
1377
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1882
hex_fpr = binascii.hexlify(fpr).upper()
1378
1883
return hex_fpr
1379
1884
1380
1885
1383
1888
def sub_process_main(self, request, address):
1384
1889
try:
1385
1890
self.finish_request(request, address)
1386
except:
1891
except Exception:
1387
1892
self.handle_error(request, address)
1388
1893
self.close_request(request)
1389
1894
1390
1895
def process_request(self, request, address):
1391
1896
"""Start a new process to process the request."""
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
1897
proc = multiprocessing.Process(target = self.sub_process_main,
1898
args = (request, address))
1899
proc.start()
1900
return proc
1901
1394
1902
1395
1903
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1396
1904
""" adds a pipe to the MixIn """
1400
1908
This function creates a new pipe in self.pipe
1401
1909
"""
1402
1910
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1403
1404
super(MultiprocessingMixInWithPipe,
1405
self).process_request(request, client_address)
1911
1912
proc = MultiprocessingMixIn.process_request(self, request,
1913
client_address)
1406
1914
self.child_pipe.close()
1407
self.add_pipe(parent_pipe)
1408
1409
def add_pipe(self, parent_pipe):
1915
self.add_pipe(parent_pipe, proc)
1916
1917
def add_pipe(self, parent_pipe, proc):
1410
1918
"""Dummy function; override as necessary"""
1411
pass
1919
raise NotImplementedError()
1920
1412
1921
1413
1922
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1414
1923
socketserver.TCPServer, object):
1420
1929
use_ipv6: Boolean; to use IPv6 or not
1421
1930
"""
1422
1931
def __init__(self, server_address, RequestHandlerClass,
1423
interface=None, use_ipv6=True):
1932
interface=None, use_ipv6=True, socketfd=None):
1933
"""If socketfd is set, use that file descriptor instead of
1934
creating a new one with socket.socket().
1935
"""
1424
1936
self.interface = interface
1425
1937
if use_ipv6:
1426
1938
self.address_family = socket.AF_INET6
1939
if socketfd is not None:
1940
# Save the file descriptor
1941
self.socketfd = socketfd
1942
# Save the original socket.socket() function
1943
self.socket_socket = socket.socket
1944
# To implement --socket, we monkey patch socket.socket.
1945
#
1946
# (When socketserver.TCPServer is a new-style class, we
1947
# could make self.socket into a property instead of monkey
1948
# patching socket.socket.)
1949
#
1950
# Create a one-time-only replacement for socket.socket()
1951
@functools.wraps(socket.socket)
1952
def socket_wrapper(*args, **kwargs):
1953
# Restore original function so subsequent calls are
1954
# not affected.
1955
socket.socket = self.socket_socket
1956
del self.socket_socket
1957
# This time only, return a new socket object from the
1958
# saved file descriptor.
1959
return socket.fromfd(self.socketfd, *args, **kwargs)
1960
# Replace socket.socket() function with wrapper
1961
socket.socket = socket_wrapper
1962
# The socketserver.TCPServer.__init__ will call
1963
# socket.socket(), which might be our replacement,
1964
# socket_wrapper(), if socketfd was set.
1427
1965
socketserver.TCPServer.__init__(self, server_address,
1428
1966
RequestHandlerClass)
1967
1429
1968
def server_bind(self):
1430
1969
"""This overrides the normal server_bind() function
1431
1970
to bind to an interface if one was specified, and also NOT to
1432
1971
bind to an address or port if they were not specified."""
1433
1972
if self.interface is not None:
1434
1973
if SO_BINDTODEVICE is None:
1435
logger.error(u"SO_BINDTODEVICE does not exist;"
1436
u" cannot bind to interface %s",
1974
logger.error("SO_BINDTODEVICE does not exist;"
1975
" cannot bind to interface %s",
1437
1976
self.interface)
1438
1977
else:
1439
1978
try:
1440
1979
self.socket.setsockopt(socket.SOL_SOCKET,
1441
1980
SO_BINDTODEVICE,
1442
str(self.interface
1443
+ u'\0'))
1444
except socket.error, error:
1445
if error[0] == errno.EPERM:
1446
logger.error(u"No permission to"
1447
u" bind to interface %s",
1448
self.interface)
1449
elif error[0] == errno.ENOPROTOOPT:
1450
logger.error(u"SO_BINDTODEVICE not available;"
1451
u" cannot bind to interface %s",
1452
self.interface)
1981
str(self.interface + '\0'))
1982
except socket.error as error:
1983
if error.errno == errno.EPERM:
1984
logger.error("No permission to bind to"
1985
" interface %s", self.interface)
1986
elif error.errno == errno.ENOPROTOOPT:
1987
logger.error("SO_BINDTODEVICE not available;"
1988
" cannot bind to interface %s",
1989
self.interface)
1990
elif error.errno == errno.ENODEV:
1991
logger.error("Interface %s does not exist,"
1992
" cannot bind", self.interface)
1453
1993
else:
1454
1994
raise
1455
1995
# Only bind(2) the socket if we really need to.
1456
1996
if self.server_address[0] or self.server_address[1]:
1457
1997
if not self.server_address[0]:
1458
1998
if self.address_family == socket.AF_INET6:
1459
any_address = u"::" # in6addr_any
1999
any_address = "::" # in6addr_any
1460
2000
else:
1461
any_address = socket.INADDR_ANY
2001
any_address = "0.0.0.0" # INADDR_ANY
1462
2002
self.server_address = (any_address,
1463
2003
self.server_address[1])
1464
2004
elif not self.server_address[1]:
1485
2025
"""
1486
2026
def __init__(self, server_address, RequestHandlerClass,
1487
2027
interface=None, use_ipv6=True, clients=None,
1488
gnutls_priority=None, use_dbus=True):
2028
gnutls_priority=None, use_dbus=True, socketfd=None):
1489
2029
self.enabled = False
1490
2030
self.clients = clients
1491
2031
if self.clients is None:
1492
self.clients = set()
2032
self.clients = {}
1493
2033
self.use_dbus = use_dbus
1494
2034
self.gnutls_priority = gnutls_priority
1495
2035
IPv6_TCPServer.__init__(self, server_address,
1496
2036
RequestHandlerClass,
1497
2037
interface = interface,
1498
use_ipv6 = use_ipv6)
2038
use_ipv6 = use_ipv6,
2039
socketfd = socketfd)
1499
2040
def server_activate(self):
1500
2041
if self.enabled:
1501
2042
return socketserver.TCPServer.server_activate(self)
2043
1502
2044
def enable(self):
1503
2045
self.enabled = True
1504
def add_pipe(self, parent_pipe):
2046
2047
def add_pipe(self, parent_pipe, proc):
1505
2048
# Call "handle_ipc" for both data and EOF events
1506
2049
gobject.io_add_watch(parent_pipe.fileno(),
1507
2050
gobject.IO_IN | gobject.IO_HUP,
1508
2051
functools.partial(self.handle_ipc,
1509
parent_pipe = parent_pipe))
1510
2052
parent_pipe =
2053
parent_pipe,
2054
proc = proc))
2055
1511
2056
def handle_ipc(self, source, condition, parent_pipe=None,
1512
client_object=None):
1513
condition_names = {
1514
gobject.IO_IN: u"IN", # There is data to read.
1515
gobject.IO_OUT: u"OUT", # Data can be written (without
1516
# blocking).
1517
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1518
gobject.IO_ERR: u"ERR", # Error condition.
1519
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1520
# broken, usually for pipes and
1521
# sockets).
1522
}
1523
conditions_string = ' | '.join(name
1524
for cond, name in
1525
condition_names.iteritems()
1526
if cond & condition)
1527
# error or the other end of multiprocessing.Pipe has closed
1528
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2057
proc = None, client_object=None):
2058
# error, or the other end of multiprocessing.Pipe has closed
2059
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2060
# Wait for other process to exit
2061
proc.join()
1529
2062
return False
1530
2063
1531
2064
# Read a request from the child
1536
2069
fpr = request[1]
1537
2070
address = request[2]
1538
2071
1539
for c in self.clients:
2072
for c in self.clients.itervalues():
1540
2073
if c.fingerprint == fpr:
1541
2074
client = c
1542
2075
break
1543
2076
else:
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
2077
logger.info("Client not found for fingerprint: %s, ad"
2078
"dress: %s", fpr, address)
1546
2079
if self.use_dbus:
1547
2080
# Emit D-Bus signal
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
2081
mandos_dbus_service.ClientNotFound(fpr,
2082
address[0])
1549
2083
parent_pipe.send(False)
1550
2084
return False
1551
2085
1552
2086
gobject.io_add_watch(parent_pipe.fileno(),
1553
2087
gobject.IO_IN | gobject.IO_HUP,
1554
2088
functools.partial(self.handle_ipc,
1555
parent_pipe = parent_pipe,
1556
client_object = client))
2089
parent_pipe =
2090
parent_pipe,
2091
proc = proc,
2092
client_object =
2093
client))
1557
2094
parent_pipe.send(True)
1558
# remove the old hook in favor of the new above hook on same fileno
2095
# remove the old hook in favor of the new above hook on
2096
# same fileno
1559
2097
return False
1560
2098
if command == 'funcall':
1561
2099
funcname = request[1]
1562
2100
args = request[2]
1563
2101
kwargs = request[3]
1564
2102
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1566
2103
parent_pipe.send(('data', getattr(client_object,
2104
funcname)(*args,
2105
**kwargs)))
2106
1567
2107
if command == 'getattr':
1568
2108
attrname = request[1]
1569
2109
if callable(client_object.__getattribute__(attrname)):
1570
2110
parent_pipe.send(('function',))
1571
2111
else:
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2112
parent_pipe.send(('data', client_object
2113
.__getattribute__(attrname)))
1573
2114
1574
2115
if command == 'setattr':
1575
2116
attrname = request[1]
1576
2117
value = request[2]
1577
2118
setattr(client_object, attrname, value)
1578
2119
1579
2120
return True
1580
2121
1581
2122
2123
def rfc3339_duration_to_delta(duration):
2124
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2125
2126
>>> rfc3339_duration_to_delta("P7D")
2127
datetime.timedelta(7)
2128
>>> rfc3339_duration_to_delta("PT60S")
2129
datetime.timedelta(0, 60)
2130
>>> rfc3339_duration_to_delta("PT60M")
2131
datetime.timedelta(0, 3600)
2132
>>> rfc3339_duration_to_delta("PT24H")
2133
datetime.timedelta(1)
2134
>>> rfc3339_duration_to_delta("P1W")
2135
datetime.timedelta(7)
2136
>>> rfc3339_duration_to_delta("PT5M30S")
2137
datetime.timedelta(0, 330)
2138
>>> rfc3339_duration_to_delta("P1DT3M20S")
2139
datetime.timedelta(1, 200)
2140
"""
2141
2142
# Parsing an RFC 3339 duration with regular expressions is not
2143
# possible - there would have to be multiple places for the same
2144
# values, like seconds. The current code, while more esoteric, is
2145
# cleaner without depending on a parsing library. If Python had a
2146
# built-in library for parsing we would use it, but we'd like to
2147
# avoid excessive use of external libraries.
2148
2149
# New type for defining tokens, syntax, and semantics all-in-one
2150
Token = collections.namedtuple("Token",
2151
("regexp", # To match token; if
2152
# "value" is not None,
2153
# must have a "group"
2154
# containing digits
2155
"value", # datetime.timedelta or
2156
# None
2157
"followers")) # Tokens valid after
2158
# this token
2159
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2160
# the "duration" ABNF definition in RFC 3339, Appendix A.
2161
token_end = Token(re.compile(r"$"), None, frozenset())
2162
token_second = Token(re.compile(r"(\d+)S"),
2163
datetime.timedelta(seconds=1),
2164
frozenset((token_end,)))
2165
token_minute = Token(re.compile(r"(\d+)M"),
2166
datetime.timedelta(minutes=1),
2167
frozenset((token_second, token_end)))
2168
token_hour = Token(re.compile(r"(\d+)H"),
2169
datetime.timedelta(hours=1),
2170
frozenset((token_minute, token_end)))
2171
token_time = Token(re.compile(r"T"),
2172
None,
2173
frozenset((token_hour, token_minute,
2174
token_second)))
2175
token_day = Token(re.compile(r"(\d+)D"),
2176
datetime.timedelta(days=1),
2177
frozenset((token_time, token_end)))
2178
token_month = Token(re.compile(r"(\d+)M"),
2179
datetime.timedelta(weeks=4),
2180
frozenset((token_day, token_end)))
2181
token_year = Token(re.compile(r"(\d+)Y"),
2182
datetime.timedelta(weeks=52),
2183
frozenset((token_month, token_end)))
2184
token_week = Token(re.compile(r"(\d+)W"),
2185
datetime.timedelta(weeks=1),
2186
frozenset((token_end,)))
2187
token_duration = Token(re.compile(r"P"), None,
2188
frozenset((token_year, token_month,
2189
token_day, token_time,
2190
token_week))),
2191
# Define starting values
2192
value = datetime.timedelta() # Value so far
2193
found_token = None
2194
followers = frozenset(token_duration,) # Following valid tokens
2195
s = duration # String left to parse
2196
# Loop until end token is found
2197
while found_token is not token_end:
2198
# Search for any currently valid tokens
2199
for token in followers:
2200
match = token.regexp.match(s)
2201
if match is not None:
2202
# Token found
2203
if token.value is not None:
2204
# Value found, parse digits
2205
factor = int(match.group(1), 10)
2206
# Add to value so far
2207
value += factor * token.value
2208
# Strip token from string
2209
s = token.regexp.sub("", s, 1)
2210
# Go to found token
2211
found_token = token
2212
# Set valid next tokens
2213
followers = found_token.followers
2214
break
2215
else:
2216
# No currently valid tokens were found
2217
raise ValueError("Invalid RFC 3339 duration")
2218
# End token found
2219
return value
2220
2221
1582
2222
def string_to_delta(interval):
1583
2223
"""Parse a string and return a datetime.timedelta
1584
2224
1585
>>> string_to_delta(u'7d')
2225
>>> string_to_delta('7d')
1586
2226
datetime.timedelta(7)
1587
>>> string_to_delta(u'60s')
2227
>>> string_to_delta('60s')
1588
2228
datetime.timedelta(0, 60)
1589
>>> string_to_delta(u'60m')
2229
>>> string_to_delta('60m')
1590
2230
datetime.timedelta(0, 3600)
1591
>>> string_to_delta(u'24h')
2231
>>> string_to_delta('24h')
1592
2232
datetime.timedelta(1)
1593
>>> string_to_delta(u'1w')
2233
>>> string_to_delta('1w')
1594
2234
datetime.timedelta(7)
1595
>>> string_to_delta(u'5m 30s')
2235
>>> string_to_delta('5m 30s')
1596
2236
datetime.timedelta(0, 330)
1597
2237
"""
2238
2239
try:
2240
return rfc3339_duration_to_delta(interval)
2241
except ValueError:
2242
pass
2243
1598
2244
timevalue = datetime.timedelta(0)
1599
2245
for s in interval.split():
1600
2246
try:
1601
2247
suffix = unicode(s[-1])
1602
2248
value = int(s[:-1])
1603
if suffix == u"d":
2249
if suffix == "d":
1604
2250
delta = datetime.timedelta(value)
1605
elif suffix == u"s":
2251
elif suffix == "s":
1606
2252
delta = datetime.timedelta(0, value)
1607
elif suffix == u"m":
2253
elif suffix == "m":
1608
2254
delta = datetime.timedelta(0, 0, 0, 0, value)
1609
elif suffix == u"h":
2255
elif suffix == "h":
1610
2256
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1611
elif suffix == u"w":
2257
elif suffix == "w":
1612
2258
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1613
2259
else:
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
2260
raise ValueError("Unknown suffix {0!r}"
2261
.format(suffix))
2262
except IndexError as e:
2263
raise ValueError(*(e.args))
1617
2264
timevalue += delta
1618
2265
return timevalue
1619
2266
1620
2267
1621
def if_nametoindex(interface):
1622
"""Call the C function if_nametoindex(), or equivalent
1623
1624
Note: This function cannot accept a unicode string."""
1625
global if_nametoindex
1626
try:
1627
if_nametoindex = (ctypes.cdll.LoadLibrary
1628
(ctypes.util.find_library(u"c"))
1629
.if_nametoindex)
1630
except (OSError, AttributeError):
1631
logger.warning(u"Doing if_nametoindex the hard way")
1632
def if_nametoindex(interface):
1633
"Get an interface index the hard way, i.e. using fcntl()"
1634
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1635
with contextlib.closing(socket.socket()) as s:
1636
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1637
struct.pack(str(u"16s16x"),
1638
interface))
1639
interface_index = struct.unpack(str(u"I"),
1640
ifreq[16:20])[0]
1641
return interface_index
1642
return if_nametoindex(interface)
1643
1644
1645
2268
def daemon(nochdir = False, noclose = False):
1646
2269
"""See daemon(3). Standard BSD Unix function.
1647
2270
1650
2273
sys.exit()
1651
2274
os.setsid()
1652
2275
if not nochdir:
1653
os.chdir(u"/")
2276
os.chdir("/")
1654
2277
if os.fork():
1655
2278
sys.exit()
1656
2279
if not noclose:
1657
2280
# Close all standard open file descriptors
1658
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2281
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1659
2282
if not stat.S_ISCHR(os.fstat(null).st_mode):
1660
2283
raise OSError(errno.ENODEV,
1661
u"%s not a character device"
1662
% os.path.devnull)
2284
"{0} not a character device"
2285
.format(os.devnull))
1663
2286
os.dup2(null, sys.stdin.fileno())
1664
2287
os.dup2(null, sys.stdout.fileno())
1665
2288
os.dup2(null, sys.stderr.fileno())
1672
2295
##################################################################
1673
2296
# Parsing of options, both command line and config file
1674
2297
1675
parser = optparse.OptionParser(version = "%%prog %s" % version)
1676
parser.add_option("-i", u"--interface", type=u"string",
1677
metavar="IF", help=u"Bind to interface IF")
1678
parser.add_option("-a", u"--address", type=u"string",
1679
help=u"Address to listen for requests on")
1680
parser.add_option("-p", u"--port", type=u"int",
1681
help=u"Port number to receive requests on")
1682
parser.add_option("--check", action=u"store_true",
1683
help=u"Run self-test")
1684
parser.add_option("--debug", action=u"store_true",
1685
help=u"Debug mode; run in foreground and log to"
1686
u" terminal")
1687
parser.add_option("--debuglevel", type=u"string", metavar="LEVEL",
1688
help=u"Debug level for stdout output")
1689
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1690
u" priority string (see GnuTLS documentation)")
1691
parser.add_option("--servicename", type=u"string",
1692
metavar=u"NAME", help=u"Zeroconf service name")
1693
parser.add_option("--configdir", type=u"string",
1694
default=u"/etc/mandos", metavar=u"DIR",
1695
help=u"Directory to search for configuration"
1696
u" files")
1697
parser.add_option("--no-dbus", action=u"store_false",
1698
dest=u"use_dbus", help=u"Do not provide D-Bus"
1699
u" system bus interface")
1700
parser.add_option("--no-ipv6", action=u"store_false",
1701
dest=u"use_ipv6", help=u"Do not use IPv6")
1702
options = parser.parse_args()[0]
2298
parser = argparse.ArgumentParser()
2299
parser.add_argument("-v", "--version", action="version",
2300
version = "%(prog)s {0}".format(version),
2301
help="show version number and exit")
2302
parser.add_argument("-i", "--interface", metavar="IF",
2303
help="Bind to interface IF")
2304
parser.add_argument("-a", "--address",
2305
help="Address to listen for requests on")
2306
parser.add_argument("-p", "--port", type=int,
2307
help="Port number to receive requests on")
2308
parser.add_argument("--check", action="store_true",
2309
help="Run self-test")
2310
parser.add_argument("--debug", action="store_true",
2311
help="Debug mode; run in foreground and log"
2312
" to terminal", default=None)
2313
parser.add_argument("--debuglevel", metavar="LEVEL",
2314
help="Debug level for stdout output")
2315
parser.add_argument("--priority", help="GnuTLS"
2316
" priority string (see GnuTLS documentation)")
2317
parser.add_argument("--servicename",
2318
metavar="NAME", help="Zeroconf service name")
2319
parser.add_argument("--configdir",
2320
default="/etc/mandos", metavar="DIR",
2321
help="Directory to search for configuration"
2322
" files")
2323
parser.add_argument("--no-dbus", action="store_false",
2324
dest="use_dbus", help="Do not provide D-Bus"
2325
" system bus interface", default=None)
2326
parser.add_argument("--no-ipv6", action="store_false",
2327
dest="use_ipv6", help="Do not use IPv6",
2328
default=None)
2329
parser.add_argument("--no-restore", action="store_false",
2330
dest="restore", help="Do not restore stored"
2331
" state", default=None)
2332
parser.add_argument("--socket", type=int,
2333
help="Specify a file descriptor to a network"
2334
" socket to use instead of creating one")
2335
parser.add_argument("--statedir", metavar="DIR",
2336
help="Directory to save/restore state in")
2337
parser.add_argument("--foreground", action="store_true",
2338
help="Run in foreground", default=None)
2339
2340
options = parser.parse_args()
1703
2341
1704
2342
if options.check:
1705
2343
import doctest
1706
doctest.testmod()
1707
sys.exit()
2344
fail_count, test_count = doctest.testmod()
2345
sys.exit(os.EX_OK if fail_count == 0 else 1)
1708
2346
1709
2347
# Default values for config file for server-global settings
1710
server_defaults = { u"interface": u"",
1711
u"address": u"",
1712
u"port": u"",
1713
u"debug": u"False",
1714
u"priority":
1715
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1716
u"servicename": u"Mandos",
1717
u"use_dbus": u"True",
1718
u"use_ipv6": u"True",
1719
u"debuglevel": u"",
2348
server_defaults = { "interface": "",
2349
"address": "",
2350
"port": "",
2351
"debug": "False",
2352
"priority":
2353
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2354
"servicename": "Mandos",
2355
"use_dbus": "True",
2356
"use_ipv6": "True",
2357
"debuglevel": "",
2358
"restore": "True",
2359
"socket": "",
2360
"statedir": "/var/lib/mandos",
2361
"foreground": "False",
1720
2362
}
1721
2363
1722
2364
# Parse config file for server-global settings
1723
2365
server_config = configparser.SafeConfigParser(server_defaults)
1724
2366
del server_defaults
1725
2367
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
2368
"mandos.conf"))
1727
2369
# Convert the SafeConfigParser object to a dict
1728
2370
server_settings = server_config.defaults()
1729
2371
# Use the appropriate methods on the non-string config options
1730
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1731
server_settings[option] = server_config.getboolean(u"DEFAULT",
2372
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2373
server_settings[option] = server_config.getboolean("DEFAULT",
1732
2374
option)
1733
2375
if server_settings["port"]:
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
2376
server_settings["port"] = server_config.getint("DEFAULT",
2377
"port")
2378
if server_settings["socket"]:
2379
server_settings["socket"] = server_config.getint("DEFAULT",
2380
"socket")
2381
# Later, stdin will, and stdout and stderr might, be dup'ed
2382
# over with an opened os.devnull. But we don't want this to
2383
# happen with a supplied network socket.
2384
if 0 <= server_settings["socket"] <= 2:
2385
server_settings["socket"] = os.dup(server_settings
2386
["socket"])
1736
2387
del server_config
1737
2388
1738
2389
# Override the settings from the config file with command line
1739
2390
# options, if set.
1740
for option in (u"interface", u"address", u"port", u"debug",
1741
u"priority", u"servicename", u"configdir",
1742
u"use_dbus", u"use_ipv6", u"debuglevel"):
2391
for option in ("interface", "address", "port", "debug",
2392
"priority", "servicename", "configdir",
2393
"use_dbus", "use_ipv6", "debuglevel", "restore",
2394
"statedir", "socket", "foreground"):
1743
2395
value = getattr(options, option)
1744
2396
if value is not None:
1745
2397
server_settings[option] = value
1748
2400
for option in server_settings.keys():
1749
2401
if type(server_settings[option]) is str:
1750
2402
server_settings[option] = unicode(server_settings[option])
2403
# Force all boolean options to be boolean
2404
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2405
"foreground"):
2406
server_settings[option] = bool(server_settings[option])
2407
# Debug implies foreground
2408
if server_settings["debug"]:
2409
server_settings["foreground"] = True
1751
2410
# Now we have our good server settings in "server_settings"
1752
2411
1753
2412
##################################################################
1754
2413
1755
2414
# For convenience
1756
debug = server_settings[u"debug"]
1757
debuglevel = server_settings[u"debuglevel"]
1758
use_dbus = server_settings[u"use_dbus"]
1759
use_ipv6 = server_settings[u"use_ipv6"]
1760
1761
if server_settings[u"servicename"] != u"Mandos":
2415
debug = server_settings["debug"]
2416
debuglevel = server_settings["debuglevel"]
2417
use_dbus = server_settings["use_dbus"]
2418
use_ipv6 = server_settings["use_ipv6"]
2419
stored_state_path = os.path.join(server_settings["statedir"],
2420
stored_state_file)
2421
foreground = server_settings["foreground"]
2422
2423
if debug:
2424
initlogger(debug, logging.DEBUG)
2425
else:
2426
if not debuglevel:
2427
initlogger(debug)
2428
else:
2429
level = getattr(logging, debuglevel.upper())
2430
initlogger(debug, level)
2431
2432
if server_settings["servicename"] != "Mandos":
1762
2433
syslogger.setFormatter(logging.Formatter
1763
(u'Mandos (%s) [%%(process)d]:'
1764
u' %%(levelname)s: %%(message)s'
1765
% server_settings[u"servicename"]))
2434
('Mandos ({0}) [%(process)d]:'
2435
' %(levelname)s: %(message)s'
2436
.format(server_settings
2437
["servicename"])))
1766
2438
1767
2439
# Parse config file with clients
1768
client_defaults = { u"timeout": u"1h",
1769
u"interval": u"5m",
1770
u"checker": u"fping -q -- %%(host)s",
1771
u"host": u"",
1772
u"approval_delay": u"0s",
1773
u"approval_duration": u"1s",
1774
}
1775
client_config = configparser.SafeConfigParser(client_defaults)
1776
client_config.read(os.path.join(server_settings[u"configdir"],
1777
u"clients.conf"))
2440
client_config = configparser.SafeConfigParser(Client
2441
.client_defaults)
2442
client_config.read(os.path.join(server_settings["configdir"],
2443
"clients.conf"))
1778
2444
1779
2445
global mandos_dbus_service
1780
2446
mandos_dbus_service = None
1781
2447
1782
tcp_server = MandosServer((server_settings[u"address"],
1783
server_settings[u"port"]),
2448
tcp_server = MandosServer((server_settings["address"],
2449
server_settings["port"]),
1784
2450
ClientHandler,
1785
interface=(server_settings[u"interface"]
2451
interface=(server_settings["interface"]
1786
2452
or None),
1787
2453
use_ipv6=use_ipv6,
1788
2454
gnutls_priority=
1789
server_settings[u"priority"],
1790
use_dbus=use_dbus)
1791
if not debug:
1792
pidfilename = u"/var/run/mandos.pid"
2455
server_settings["priority"],
2456
use_dbus=use_dbus,
2457
socketfd=(server_settings["socket"]
2458
or None))
2459
if not foreground:
2460
pidfilename = "/run/mandos.pid"
2461
if not os.path.isdir("/run/."):
2462
pidfilename = "/var/run/mandos.pid"
2463
pidfile = None
1793
2464
try:
1794
pidfile = open(pidfilename, u"w")
1795
except IOError:
1796
logger.error(u"Could not open file %r", pidfilename)
2465
pidfile = open(pidfilename, "w")
2466
except IOError as e:
2467
logger.error("Could not open file %r", pidfilename,
2468
exc_info=e)
1797
2469
1798
try:
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
1801
except KeyError:
2470
for name in ("_mandos", "mandos", "nobody"):
1802
2471
try:
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
2472
uid = pwd.getpwnam(name).pw_uid
2473
gid = pwd.getpwnam(name).pw_gid
2474
break
1805
2475
except KeyError:
1806
try:
1807
uid = pwd.getpwnam(u"nobody").pw_uid
1808
gid = pwd.getpwnam(u"nobody").pw_gid
1809
except KeyError:
1810
uid = 65534
1811
gid = 65534
2476
continue
2477
else:
2478
uid = 65534
2479
gid = 65534
1812
2480
try:
1813
2481
os.setgid(gid)
1814
2482
os.setuid(uid)
1815
except OSError, error:
1816
if error[0] != errno.EPERM:
1817
raise error
2483
except OSError as error:
2484
if error.errno != errno.EPERM:
2485
raise
1818
2486
1819
if not debug and not debuglevel:
1820
syslogger.setLevel(logging.WARNING)
1821
console.setLevel(logging.WARNING)
1822
if debuglevel:
1823
level = getattr(logging, debuglevel.upper())
1824
syslogger.setLevel(level)
1825
console.setLevel(level)
1826
1827
2487
if debug:
1828
2488
# Enable all possible GnuTLS debugging
1829
2489
1833
2493
1834
2494
@gnutls.library.types.gnutls_log_func
1835
2495
def debug_gnutls(level, string):
1836
logger.debug(u"GnuTLS: %s", string[:-1])
2496
logger.debug("GnuTLS: %s", string[:-1])
1837
2497
1838
2498
(gnutls.library.functions
1839
2499
.gnutls_global_set_log_function(debug_gnutls))
1840
2500
1841
2501
# Redirect stdin so all checkers get /dev/null
1842
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2502
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1843
2503
os.dup2(null, sys.stdin.fileno())
1844
2504
if null > 2:
1845
2505
os.close(null)
1846
else:
1847
# No console logging
1848
logger.removeHandler(console)
1849
2506
2507
# Need to fork before connecting to D-Bus
2508
if not foreground:
2509
# Close all input and output, do double fork, etc.
2510
daemon()
2511
2512
# multiprocessing will use threads, so before we use gobject we
2513
# need to inform gobject that threads will be used.
2514
gobject.threads_init()
1850
2515
1851
2516
global main_loop
1852
2517
# From the Avahi example code
1853
DBusGMainLoop(set_as_default=True )
2518
DBusGMainLoop(set_as_default=True)
1854
2519
main_loop = gobject.MainLoop()
1855
2520
bus = dbus.SystemBus()
1856
2521
# End of Avahi example code
1857
2522
if use_dbus:
1858
2523
try:
1859
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2524
bus_name = dbus.service.BusName("se.recompile.Mandos",
1860
2525
bus, do_not_queue=True)
1861
except dbus.exceptions.NameExistsException, e:
1862
logger.error(unicode(e) + u", disabling D-Bus")
2526
old_bus_name = (dbus.service.BusName
2527
("se.bsnet.fukt.Mandos", bus,
2528
do_not_queue=True))
2529
except dbus.exceptions.NameExistsException as e:
2530
logger.error("Disabling D-Bus:", exc_info=e)
1863
2531
use_dbus = False
1864
server_settings[u"use_dbus"] = False
2532
server_settings["use_dbus"] = False
1865
2533
tcp_server.use_dbus = False
1866
2534
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1867
service = AvahiService(name = server_settings[u"servicename"],
1868
servicetype = u"_mandos._tcp",
1869
protocol = protocol, bus = bus)
2535
service = AvahiServiceToSyslog(name =
2536
server_settings["servicename"],
2537
servicetype = "_mandos._tcp",
2538
protocol = protocol, bus = bus)
1870
2539
if server_settings["interface"]:
1871
2540
service.interface = (if_nametoindex
1872
(str(server_settings[u"interface"])))
1873
1874
if not debug:
1875
# Close all input and output, do double fork, etc.
1876
daemon()
1877
2541
(str(server_settings["interface"])))
2542
1878
2543
global multiprocessing_manager
1879
2544
multiprocessing_manager = multiprocessing.Manager()
1880
2545
1881
2546
client_class = Client
1882
2547
if use_dbus:
1883
2548
client_class = functools.partial(ClientDBus, bus = bus)
1884
def client_config_items(config, section):
1885
special_settings = {
1886
"approved_by_default":
1887
lambda: config.getboolean(section,
1888
"approved_by_default"),
1889
}
1890
for name, value in config.items(section):
2549
2550
client_settings = Client.config_parser(client_config)
2551
old_client_settings = {}
2552
clients_data = {}
2553
2554
# This is used to redirect stdout and stderr for checker processes
2555
global wnull
2556
wnull = open(os.devnull, "w") # A writable /dev/null
2557
# Only used if server is running in foreground but not in debug
2558
# mode
2559
if debug or not foreground:
2560
wnull.close()
2561
2562
# Get client data and settings from last running state.
2563
if server_settings["restore"]:
2564
try:
2565
with open(stored_state_path, "rb") as stored_state:
2566
clients_data, old_client_settings = (pickle.load
2567
(stored_state))
2568
os.remove(stored_state_path)
2569
except IOError as e:
2570
if e.errno == errno.ENOENT:
2571
logger.warning("Could not load persistent state: {0}"
2572
.format(os.strerror(e.errno)))
2573
else:
2574
logger.critical("Could not load persistent state:",
2575
exc_info=e)
2576
raise
2577
except EOFError as e:
2578
logger.warning("Could not load persistent state: "
2579
"EOFError:", exc_info=e)
2580
2581
with PGPEngine() as pgp:
2582
for client_name, client in clients_data.iteritems():
2583
# Skip removed clients
2584
if client_name not in client_settings:
2585
continue
2586
2587
# Decide which value to use after restoring saved state.
2588
# We have three different values: Old config file,
2589
# new config file, and saved state.
2590
# New config value takes precedence if it differs from old
2591
# config value, otherwise use saved state.
2592
for name, value in client_settings[client_name].items():
2593
try:
2594
# For each value in new config, check if it
2595
# differs from the old config value (Except for
2596
# the "secret" attribute)
2597
if (name != "secret" and
2598
value != old_client_settings[client_name]
2599
[name]):
2600
client[name] = value
2601
except KeyError:
2602
pass
2603
2604
# Clients who has passed its expire date can still be
2605
# enabled if its last checker was successful. Clients
2606
# whose checker succeeded before we stored its state is
2607
# assumed to have successfully run all checkers during
2608
# downtime.
2609
if client["enabled"]:
2610
if datetime.datetime.utcnow() >= client["expires"]:
2611
if not client["last_checked_ok"]:
2612
logger.warning(
2613
"disabling client {0} - Client never "
2614
"performed a successful checker"
2615
.format(client_name))
2616
client["enabled"] = False
2617
elif client["last_checker_status"] != 0:
2618
logger.warning(
2619
"disabling client {0} - Client "
2620
"last checker failed with error code {1}"
2621
.format(client_name,
2622
client["last_checker_status"]))
2623
client["enabled"] = False
2624
else:
2625
client["expires"] = (datetime.datetime
2626
.utcnow()
2627
+ client["timeout"])
2628
logger.debug("Last checker succeeded,"
2629
" keeping {0} enabled"
2630
.format(client_name))
1891
2631
try:
1892
yield (name, special_settings[name]())
1893
except KeyError:
1894
yield (name, value)
1895
1896
tcp_server.clients.update(set(
1897
client_class(name = section,
1898
config= dict(client_config_items(
1899
client_config, section)))
1900
for section in client_config.sections()))
2632
client["secret"] = (
2633
pgp.decrypt(client["encrypted_secret"],
2634
client_settings[client_name]
2635
["secret"]))
2636
except PGPError:
2637
# If decryption fails, we use secret from new settings
2638
logger.debug("Failed to decrypt {0} old secret"
2639
.format(client_name))
2640
client["secret"] = (
2641
client_settings[client_name]["secret"])
2642
2643
# Add/remove clients based on new changes made to config
2644
for client_name in (set(old_client_settings)
2645
- set(client_settings)):
2646
del clients_data[client_name]
2647
for client_name in (set(client_settings)
2648
- set(old_client_settings)):
2649
clients_data[client_name] = client_settings[client_name]
2650
2651
# Create all client objects
2652
for client_name, client in clients_data.iteritems():
2653
tcp_server.clients[client_name] = client_class(
2654
name = client_name, settings = client,
2655
server_settings = server_settings)
2656
1901
2657
if not tcp_server.clients:
1902
logger.warning(u"No clients defined")
1903
1904
if not debug:
1905
try:
1906
with pidfile:
1907
pid = os.getpid()
1908
pidfile.write(str(pid) + "\n")
1909
del pidfile
1910
except IOError:
1911
logger.error(u"Could not write to file %r with PID %d",
1912
pidfilename, pid)
1913
except NameError:
1914
# "pidfile" was never created
1915
pass
2658
logger.warning("No clients defined")
2659
2660
if not foreground:
2661
if pidfile is not None:
2662
try:
2663
with pidfile:
2664
pid = os.getpid()
2665
pidfile.write(str(pid) + "\n".encode("utf-8"))
2666
except IOError:
2667
logger.error("Could not write to file %r with PID %d",
2668
pidfilename, pid)
2669
del pidfile
1916
2670
del pidfilename
1917
1918
signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
2671
1920
2672
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1921
2673
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1922
2674
1923
2675
if use_dbus:
1924
class MandosDBusService(dbus.service.Object):
2676
@alternate_dbus_interfaces({"se.recompile.Mandos":
2677
"se.bsnet.fukt.Mandos"})
2678
class MandosDBusService(DBusObjectWithProperties):
1925
2679
"""A D-Bus proxy object"""
1926
2680
def __init__(self):
1927
dbus.service.Object.__init__(self, bus, u"/")
1928
_interface = u"se.bsnet.fukt.Mandos"
1929
1930
@dbus.service.signal(_interface, signature=u"o")
2681
dbus.service.Object.__init__(self, bus, "/")
2682
_interface = "se.recompile.Mandos"
2683
2684
@dbus_interface_annotations(_interface)
2685
def _foo(self):
2686
return { "org.freedesktop.DBus.Property"
2687
".EmitsChangedSignal":
2688
"false"}
2689
2690
@dbus.service.signal(_interface, signature="o")
1931
2691
def ClientAdded(self, objpath):
1932
2692
"D-Bus signal"
1933
2693
pass
1934
2694
1935
@dbus.service.signal(_interface, signature=u"ss")
2695
@dbus.service.signal(_interface, signature="ss")
1936
2696
def ClientNotFound(self, fingerprint, address):
1937
2697
"D-Bus signal"
1938
2698
pass
1939
2699
1940
@dbus.service.signal(_interface, signature=u"os")
2700
@dbus.service.signal(_interface, signature="os")
1941
2701
def ClientRemoved(self, objpath, name):
1942
2702
"D-Bus signal"
1943
2703
pass
1944
2704
1945
@dbus.service.method(_interface, out_signature=u"ao")
2705
@dbus.service.method(_interface, out_signature="ao")
1946
2706
def GetAllClients(self):
1947
2707
"D-Bus method"
1948
2708
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
2709
for c in
2710
tcp_server.clients.itervalues())
1950
2711
1951
2712
@dbus.service.method(_interface,
1952
out_signature=u"a{oa{sv}}")
2713
out_signature="a{oa{sv}}")
1953
2714
def GetAllClientsWithProperties(self):
1954
2715
"D-Bus method"
1955
2716
return dbus.Dictionary(
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
2717
((c.dbus_object_path, c.GetAll(""))
2718
for c in tcp_server.clients.itervalues()),
2719
signature="oa{sv}")
1959
2720
1960
@dbus.service.method(_interface, in_signature=u"o")
2721
@dbus.service.method(_interface, in_signature="o")
1961
2722
def RemoveClient(self, object_path):
1962
2723
"D-Bus method"
1963
for c in tcp_server.clients:
2724
for c in tcp_server.clients.itervalues():
1964
2725
if c.dbus_object_path == object_path:
1965
tcp_server.clients.remove(c)
2726
del tcp_server.clients[c.name]
1966
2727
c.remove_from_connection()
1967
2728
# Don't signal anything except ClientRemoved
1968
2729
c.disable(quiet=True)
1979
2740
"Cleanup function; run on exit"
1980
2741
service.cleanup()
1981
2742
2743
multiprocessing.active_children()
2744
wnull.close()
2745
if not (tcp_server.clients or client_settings):
2746
return
2747
2748
# Store client before exiting. Secrets are encrypted with key
2749
# based on what config file has. If config file is
2750
# removed/edited, old secret will thus be unrecovable.
2751
clients = {}
2752
with PGPEngine() as pgp:
2753
for client in tcp_server.clients.itervalues():
2754
key = client_settings[client.name]["secret"]
2755
client.encrypted_secret = pgp.encrypt(client.secret,
2756
key)
2757
client_dict = {}
2758
2759
# A list of attributes that can not be pickled
2760
# + secret.
2761
exclude = set(("bus", "changedstate", "secret",
2762
"checker", "server_settings"))
2763
for name, typ in (inspect.getmembers
2764
(dbus.service.Object)):
2765
exclude.add(name)
2766
2767
client_dict["encrypted_secret"] = (client
2768
.encrypted_secret)
2769
for attr in client.client_structure:
2770
if attr not in exclude:
2771
client_dict[attr] = getattr(client, attr)
2772
2773
clients[client.name] = client_dict
2774
del client_settings[client.name]["secret"]
2775
2776
try:
2777
with (tempfile.NamedTemporaryFile
2778
(mode='wb', suffix=".pickle", prefix='clients-',
2779
dir=os.path.dirname(stored_state_path),
2780
delete=False)) as stored_state:
2781
pickle.dump((clients, client_settings), stored_state)
2782
tempname=stored_state.name
2783
os.rename(tempname, stored_state_path)
2784
except (IOError, OSError) as e:
2785
if not debug:
2786
try:
2787
os.remove(tempname)
2788
except NameError:
2789
pass
2790
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2791
logger.warning("Could not save persistent state: {0}"
2792
.format(os.strerror(e.errno)))
2793
else:
2794
logger.warning("Could not save persistent state:",
2795
exc_info=e)
2796
raise
2797
2798
# Delete all clients, and settings from config
1982
2799
while tcp_server.clients:
1983
client = tcp_server.clients.pop()
2800
name, client = tcp_server.clients.popitem()
1984
2801
if use_dbus:
1985
2802
client.remove_from_connection()
1986
client.disable_hook = None
1987
2803
# Don't signal anything except ClientRemoved
1988
2804
client.disable(quiet=True)
1989
2805
if use_dbus:
1990
2806
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2807
mandos_dbus_service.ClientRemoved(client
2808
.dbus_object_path,
1992
2809
client.name)
2810
client_settings.clear()
1993
2811
1994
2812
atexit.register(cleanup)
1995
2813
1996
for client in tcp_server.clients:
2814
for client in tcp_server.clients.itervalues():
1997
2815
if use_dbus:
1998
2816
# Emit D-Bus signal
1999
2817
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2000
client.enable()
2818
# Need to initiate checking of clients
2819
if client.enabled:
2820
client.init_checker()
2001
2821
2002
2822
tcp_server.enable()
2003
2823
tcp_server.server_activate()
2005
2825
# Find out what port we got
2006
2826
service.port = tcp_server.socket.getsockname()[1]
2007
2827
if use_ipv6:
2008
logger.info(u"Now listening on address %r, port %d,"
2009
" flowinfo %d, scope_id %d"
2010
% tcp_server.socket.getsockname())
2828
logger.info("Now listening on address %r, port %d,"
2829
" flowinfo %d, scope_id %d",
2830
*tcp_server.socket.getsockname())
2011
2831
else: # IPv4
2012
logger.info(u"Now listening on address %r, port %d"
2013
% tcp_server.socket.getsockname())
2832
logger.info("Now listening on address %r, port %d",
2833
*tcp_server.socket.getsockname())
2014
2834
2015
2835
#service.interface = tcp_server.socket.getsockname()[3]
2016
2836
2018
2838
# From the Avahi example code
2019
2839
try:
2020
2840
service.activate()
2021
except dbus.exceptions.DBusException, error:
2022
logger.critical(u"DBusException: %s", error)
2841
except dbus.exceptions.DBusException as error:
2842
logger.critical("D-Bus Exception", exc_info=error)
2023
2843
cleanup()
2024
2844
sys.exit(1)
2025
2845
# End of Avahi example code
2029
2849
(tcp_server.handle_request
2030
2850
(*args[2:], **kwargs) or True))
2031
2851
2032
logger.debug(u"Starting main loop")
2852
logger.debug("Starting main loop")
2033
2853
main_loop.run()
2034
except AvahiError, error:
2035
logger.critical(u"AvahiError: %s", error)
2854
except AvahiError as error:
2855
logger.critical("Avahi Error", exc_info=error)
2036
2856
cleanup()
2037
2857
sys.exit(1)
2038
2858
except KeyboardInterrupt:
2039
2859
if debug:
2040
print >> sys.stderr
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
2860
print("", file=sys.stderr)
2861
logger.debug("Server received KeyboardInterrupt")
2862
logger.debug("Server exiting")
2043
2863
# Must run before the D-Bus bus name gets deregistered
2044
2864
cleanup()
2045
2865
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0