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- Committer: Teddy Hogeborn
- Date: 2010-09-12 03:00:40 UTC
- Revision ID: teddy@fukt.bsnet.se-20100912030040-b0uopyennste9fdh
Documentation changes:
* DBUS-API: New file documenting the server D-Bus interface.
* clients.conf: Add examples of new approval settings.
* debian/mandos.docs: Added "DBUS-API".
* mandos-clients.conf.xml (OPTIONS): Added "approved_by_default",
"approval_delay", and
"approval_duration".
* mandos.xml (D-BUS INTERFACE): Refer to the "DBUS-API" file.
(BUGS): Remove mention of lack of a remote query interface.
* DBUS-API: New file documenting the server D-Bus interface.
* clients.conf: Add examples of new approval settings.
* debian/mandos.docs: Added "DBUS-API".
* mandos-clients.conf.xml (OPTIONS): Added "approved_by_default",
"approval_delay", and
"approval_duration".
* mandos.xml (D-BUS INTERFACE): Refer to the "DBUS-API" file.
(BUGS): Remove mention of lack of a remote query interface.
- files removed:
- debian/mandos-client.examples
- debian/source
- debian/upstream
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python2.7
1
#!/usr/bin/python
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# -*- mode: python; coding: utf-8 -*-
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#
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# Mandos server - give out binary blobs to connecting clients.
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# "AvahiService" class, and some lines in "main".
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#
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# Everything else is
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# Copyright © 2008-2014 Teddy Hogeborn
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# Copyright © 2008-2014 Björn Påhlsson
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# 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@recompile.se>.
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# Contact the authors at <mandos@fukt.bsnet.se>.
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#
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from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
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from future_builtins import *
34
from __future__ import division, with_statement, absolute_import
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35
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import SocketServer as socketserver
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import socket
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import argparse
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import optparse
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import datetime
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import errno
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import gnutls.crypto
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import 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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64
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import dbus
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66
import dbus.service
88
80
except ImportError:
89
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SO_BINDTODEVICE = None
90
82
91
if sys.version_info.major == 2:
92
str = unicode
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version = "1.6.9"
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stored_state_file = "clients.pickle"
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logger = logging.getLogger()
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syslogger = None
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100
try:
101
if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
103
.if_nametoindex)
104
except (OSError, AttributeError):
105
def if_nametoindex(interface):
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"Get an interface index the hard way, i.e. using fcntl()"
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SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
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with contextlib.closing(socket.socket()) as s:
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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
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struct.pack(b"16s16x", interface))
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interface_index = struct.unpack("I", ifreq[16:20])[0]
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return interface_index
113
114
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def initlogger(debug, level=logging.WARNING):
116
"""init logger and add loglevel"""
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global syslogger
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syslogger = (logging.handlers.SysLogHandler
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(facility =
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logging.handlers.SysLogHandler.LOG_DAEMON,
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address = "/dev/log"))
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syslogger.setFormatter(logging.Formatter
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('Mandos [%(process)d]: %(levelname)s:'
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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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137
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class PGPError(Exception):
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"""Exception if encryption/decryption fails"""
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pass
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class PGPEngine(object):
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"""A simple class for OpenPGP symmetric encryption & decryption"""
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def __init__(self):
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self.tempdir = tempfile.mkdtemp(prefix="mandos-")
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self.gnupgargs = ['--batch',
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'--home', self.tempdir,
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'--force-mdc',
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'--quiet',
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'--no-use-agent']
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def __enter__(self):
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return self
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def __exit__(self, exc_type, exc_value, traceback):
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self._cleanup()
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return False
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160
def __del__(self):
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self._cleanup()
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def _cleanup(self):
164
if self.tempdir is not None:
165
# Delete contents of tempdir
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for root, dirs, files in os.walk(self.tempdir,
167
topdown = False):
168
for filename in files:
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os.remove(os.path.join(root, filename))
170
for dirname in dirs:
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os.rmdir(os.path.join(root, dirname))
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# Remove tempdir
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os.rmdir(self.tempdir)
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self.tempdir = None
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def password_encode(self, password):
177
# Passphrase can not be empty and can not contain newlines or
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# NUL bytes. So we prefix it and hex encode it.
179
encoded = b"mandos" + binascii.hexlify(password)
180
if len(encoded) > 2048:
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# GnuPG can't handle long passwords, so encode differently
182
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
183
.replace(b"\n", b"\\n")
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.replace(b"\0", b"\\x00"))
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return encoded
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def encrypt(self, data, password):
188
passphrase = self.password_encode(password)
189
with tempfile.NamedTemporaryFile(dir=self.tempdir
190
) as passfile:
191
passfile.write(passphrase)
192
passfile.flush()
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proc = subprocess.Popen(['gpg', '--symmetric',
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'--passphrase-file',
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passfile.name]
196
+ self.gnupgargs,
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stdin = subprocess.PIPE,
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stdout = subprocess.PIPE,
199
stderr = subprocess.PIPE)
200
ciphertext, err = proc.communicate(input = data)
201
if proc.returncode != 0:
202
raise PGPError(err)
203
return ciphertext
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def decrypt(self, data, password):
206
passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(dir = self.tempdir
208
) as passfile:
209
passfile.write(passphrase)
210
passfile.flush()
211
proc = subprocess.Popen(['gpg', '--decrypt',
212
'--passphrase-file',
213
passfile.name]
214
+ self.gnupgargs,
215
stdin = subprocess.PIPE,
216
stdout = subprocess.PIPE,
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stderr = subprocess.PIPE)
218
decrypted_plaintext, err = proc.communicate(input
219
= data)
220
if proc.returncode != 0:
221
raise PGPError(err)
222
return decrypted_plaintext
223
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version = "1.0.14"
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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
92
(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()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
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u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
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class AvahiError(Exception):
226
103
def __init__(self, value, *args, **kwargs):
227
104
self.value = value
228
return super(AvahiError, self).__init__(value, *args,
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**kwargs)
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
230
108
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class AvahiServiceError(AvahiError):
232
110
pass
241
119
Attributes:
242
120
interface: integer; avahi.IF_UNSPEC or an interface index.
243
121
Used to optionally bind to the specified interface.
244
name: string; Example: 'Mandos'
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type: string; Example: '_mandos._tcp'.
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See <https://www.iana.org/assignments/service-names-port-numbers>
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name: string; Example: u'Mandos'
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type: string; Example: u'_mandos._tcp'.
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See <http://www.dns-sd.org/ServiceTypes.html>
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port: integer; what port to announce
248
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TXT: list of strings; TXT record for the service
249
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domain: string; Domain to publish on, default to .local if empty.
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133
server: D-Bus Server
256
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bus: dbus.SystemBus()
257
135
"""
258
259
136
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
260
137
servicetype = None, port = None, TXT = None,
261
domain = "", host = "", max_renames = 32768,
138
domain = u"", host = u"", max_renames = 32768,
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protocol = avahi.PROTO_UNSPEC, bus = None):
263
140
self.interface = interface
264
141
self.name = name
273
150
self.group = None # our entry group
274
151
self.server = None
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self.bus = bus
276
self.entry_group_state_changed_match = None
277
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def rename(self, remove=True):
153
def rename(self):
279
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"""Derived from the Avahi example code"""
280
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if self.rename_count >= self.max_renames:
281
logger.critical("No suitable Zeroconf service name found"
282
" after %i retries, exiting.",
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
283
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self.rename_count)
284
raise AvahiServiceError("Too many renames")
285
self.name = str(self.server
286
.GetAlternativeServiceName(self.name))
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 ...",
162
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
self.remove()
168
try:
169
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
172
self.cleanup()
173
os._exit(1)
287
174
self.rename_count += 1
288
logger.info("Changing Zeroconf service name to %r ...",
289
self.name)
290
if remove:
291
self.remove()
292
try:
293
self.add()
294
except dbus.exceptions.DBusException as error:
295
if (error.get_dbus_name()
296
== "org.freedesktop.Avahi.CollisionError"):
297
logger.info("Local Zeroconf service name collision.")
298
return self.rename(remove=False)
299
else:
300
logger.critical("D-Bus Exception", exc_info=error)
301
self.cleanup()
302
os._exit(1)
303
304
175
def remove(self):
305
176
"""Derived from the Avahi example code"""
306
if self.entry_group_state_changed_match is not None:
307
self.entry_group_state_changed_match.remove()
308
self.entry_group_state_changed_match = None
309
177
if self.group is not None:
310
178
self.group.Reset()
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312
179
def add(self):
313
180
"""Derived from the Avahi example code"""
314
self.remove()
315
181
if self.group is None:
316
182
self.group = dbus.Interface(
317
183
self.bus.get_object(avahi.DBUS_NAME,
318
184
self.server.EntryGroupNew()),
319
185
avahi.DBUS_INTERFACE_ENTRY_GROUP)
320
self.entry_group_state_changed_match = (
321
self.group.connect_to_signal(
322
'StateChanged', self.entry_group_state_changed))
323
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
186
self.group.connect_to_signal('StateChanged',
187
self
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.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
324
190
self.name, self.type)
325
191
self.group.AddService(
326
192
self.interface,
331
197
dbus.UInt16(self.port),
332
198
avahi.string_array_to_txt_array(self.TXT))
333
199
self.group.Commit()
334
335
200
def entry_group_state_changed(self, state, error):
336
201
"""Derived from the Avahi example code"""
337
logger.debug("Avahi entry group state change: %i", state)
202
logger.debug(u"Avahi entry group state change: %i", state)
338
203
339
204
if state == avahi.ENTRY_GROUP_ESTABLISHED:
340
logger.debug("Zeroconf service established.")
205
logger.debug(u"Zeroconf service established.")
341
206
elif state == avahi.ENTRY_GROUP_COLLISION:
342
logger.info("Zeroconf service name collision.")
207
logger.warning(u"Zeroconf service name collision.")
343
208
self.rename()
344
209
elif state == avahi.ENTRY_GROUP_FAILURE:
345
logger.critical("Avahi: Error in group state changed %s",
346
str(error))
347
raise AvahiGroupError("State changed: {!s}"
348
.format(error))
349
210
logger.critical(u"Avahi: Error in group state changed %s",
211
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
350
214
def cleanup(self):
351
215
"""Derived from the Avahi example code"""
352
216
if self.group is not None:
353
try:
354
self.group.Free()
355
except (dbus.exceptions.UnknownMethodException,
356
dbus.exceptions.DBusException):
357
pass
217
self.group.Free()
358
218
self.group = None
359
self.remove()
360
361
def server_state_changed(self, state, error=None):
219
def server_state_changed(self, state):
362
220
"""Derived from the Avahi example code"""
363
logger.debug("Avahi server state change: %i", state)
364
bad_states = { avahi.SERVER_INVALID:
365
"Zeroconf server invalid",
366
avahi.SERVER_REGISTERING: None,
367
avahi.SERVER_COLLISION:
368
"Zeroconf server name collision",
369
avahi.SERVER_FAILURE:
370
"Zeroconf server failure" }
371
if state in bad_states:
372
if bad_states[state] is not None:
373
if error is None:
374
logger.error(bad_states[state])
375
else:
376
logger.error(bad_states[state] + ": %r", error)
377
self.cleanup()
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()
378
225
elif state == avahi.SERVER_RUNNING:
379
226
self.add()
380
else:
381
if error is None:
382
logger.debug("Unknown state: %r", state)
383
else:
384
logger.debug("Unknown state: %r: %r", state, error)
385
386
227
def activate(self):
387
228
"""Derived from the Avahi example code"""
388
229
if self.server is None:
389
230
self.server = dbus.Interface(
390
231
self.bus.get_object(avahi.DBUS_NAME,
391
avahi.DBUS_PATH_SERVER,
392
follow_name_owner_changes=True),
232
avahi.DBUS_PATH_SERVER),
393
233
avahi.DBUS_INTERFACE_SERVER)
394
self.server.connect_to_signal("StateChanged",
234
self.server.connect_to_signal(u"StateChanged",
395
235
self.server_state_changed)
396
236
self.server_state_changed(self.server.GetState())
397
237
398
238
399
class AvahiServiceToSyslog(AvahiService):
400
def rename(self, *args, **kwargs):
401
"""Add the new name to the syslog messages"""
402
ret = AvahiService.rename(self, *args, **kwargs)
403
syslogger.setFormatter(logging.Formatter
404
('Mandos ({}) [%(process)d]:'
405
' %(levelname)s: %(message)s'
406
.format(self.name)))
407
return ret
408
409
410
239
class Client(object):
411
240
"""A representation of a client host served by this server.
412
241
413
242
Attributes:
414
approved: bool(); 'None' if not yet approved/disapproved
415
approval_delay: datetime.timedelta(); Time to wait for approval
416
approval_duration: datetime.timedelta(); Duration of one approval
243
name: string; from the config file, used in log messages and
244
D-Bus identifiers
245
fingerprint: string (40 or 32 hexadecimal digits); used to
246
uniquely identify the client
247
secret: bytestring; sent verbatim (over TLS) to client
248
host: string; available for use by the checker command
249
created: datetime.datetime(); (UTC) object creation
250
last_enabled: datetime.datetime(); (UTC)
251
enabled: bool()
252
last_checked_ok: datetime.datetime(); (UTC) or None
253
timeout: datetime.timedelta(); How long from last_checked_ok
254
until this client is disabled
255
interval: datetime.timedelta(); How often to start a new checker
256
disable_hook: If set, called by disable() as disable_hook(self)
417
257
checker: subprocess.Popen(); a running checker process used
418
258
to see if the client lives.
419
259
'None' if no process is running.
420
checker_callback_tag: a gobject event source tag, or None
421
checker_command: string; External command which is run to check
422
if client lives. %() expansions are done at
260
checker_initiator_tag: a gobject event source tag, or None
261
disable_initiator_tag: - '' -
262
checker_callback_tag: - '' -
263
checker_command: string; External command which is run to check if
264
client lives. %() expansions are done at
423
265
runtime with vars(self) as dict, so that for
424
266
instance %(name)s can be used in the command.
425
checker_initiator_tag: a gobject event source tag, or None
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
429
267
current_checker_command: string; current running checker_command
430
disable_initiator_tag: a gobject event source tag, or None
431
enabled: bool()
432
fingerprint: string (40 or 32 hexadecimal digits); used to
433
uniquely identify the client
434
host: string; available for use by the checker command
435
interval: datetime.timedelta(); How often to start a new checker
436
last_approval_request: datetime.datetime(); (UTC) or None
437
last_checked_ok: datetime.datetime(); (UTC) or None
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
442
name: string; from the config file, used in log messages and
443
D-Bus identifiers
444
secret: bytestring; sent verbatim (over TLS) to client
445
timeout: datetime.timedelta(); How long from last_checked_ok
446
until this client is disabled
447
extended_timeout: extra long timeout when secret has been sent
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()
268
approval_delay: datetime.timedelta(); Time to wait for approval
269
_approved: bool(); 'None' if not yet approved/disapproved
270
approval_duration: datetime.timedelta(); Duration of one approval
452
271
"""
453
272
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
}
469
470
273
@staticmethod
471
def config_parser(config):
472
"""Construct a new dict of client settings of this form:
473
{ client_name: {setting_name: value, ...}, ...}
474
with exceptions for any special settings as defined above.
475
NOTE: Must be a pure function. Must return the same result
476
value given the same arguments.
477
"""
478
settings = {}
479
for client_name in config.sections():
480
section = dict(config.items(client_name))
481
client = settings[client_name] = {}
482
483
client["host"] = section["host"]
484
# Reformat values from string types to Python types
485
client["approved_by_default"] = config.getboolean(
486
client_name, "approved_by_default")
487
client["enabled"] = config.getboolean(client_name,
488
"enabled")
489
490
# Uppercase and remove spaces from fingerprint for later
491
# comparison purposes with return value from the
492
# fingerprint() function
493
client["fingerprint"] = (section["fingerprint"].upper()
494
.replace(" ", ""))
495
if "secret" in section:
496
client["secret"] = section["secret"].decode("base64")
497
elif "secfile" in section:
498
with open(os.path.expanduser(os.path.expandvars
499
(section["secfile"])),
500
"rb") as secfile:
501
client["secret"] = secfile.read()
502
else:
503
raise TypeError("No secret or secfile for section {}"
504
.format(section))
505
client["timeout"] = string_to_delta(section["timeout"])
506
client["extended_timeout"] = string_to_delta(
507
section["extended_timeout"])
508
client["interval"] = string_to_delta(section["interval"])
509
client["approval_delay"] = string_to_delta(
510
section["approval_delay"])
511
client["approval_duration"] = string_to_delta(
512
section["approval_duration"])
513
client["checker_command"] = section["checker"]
514
client["last_approval_request"] = None
515
client["last_checked_ok"] = None
516
client["last_checker_status"] = -2
517
518
return settings
519
520
def __init__(self, settings, name = None, server_settings=None):
274
def _timedelta_to_milliseconds(td):
275
"Convert a datetime.timedelta() to milliseconds"
276
return ((td.days * 24 * 60 * 60 * 1000)
277
+ (td.seconds * 1000)
278
+ (td.microseconds // 1000))
279
280
def timeout_milliseconds(self):
281
"Return the 'timeout' attribute in milliseconds"
282
return self._timedelta_to_milliseconds(self.timeout)
283
284
def interval_milliseconds(self):
285
"Return the 'interval' attribute in milliseconds"
286
return self._timedelta_to_milliseconds(self.interval)
287
288
def approval_delay_milliseconds(self):
289
return self._timedelta_to_milliseconds(self.approval_delay)
290
291
def __init__(self, name = None, disable_hook=None, config=None):
292
"""Note: the 'checker' key in 'config' sets the
293
'checker_command' attribute and *not* the 'checker'
294
attribute."""
521
295
self.name = name
522
if server_settings is None:
523
server_settings = {}
524
self.server_settings = server_settings
525
# adding all client settings
526
for setting, value in settings.items():
527
setattr(self, setting, value)
528
529
if self.enabled:
530
if not hasattr(self, "last_enabled"):
531
self.last_enabled = datetime.datetime.utcnow()
532
if not hasattr(self, "expires"):
533
self.expires = (datetime.datetime.utcnow()
534
+ self.timeout)
296
if config is None:
297
config = {}
298
logger.debug(u"Creating client %r", self.name)
299
# Uppercase and remove spaces from fingerprint for later
300
# comparison purposes with return value from the fingerprint()
301
# function
302
self.fingerprint = (config[u"fingerprint"].upper()
303
.replace(u" ", u""))
304
logger.debug(u" Fingerprint: %s", self.fingerprint)
305
if u"secret" in config:
306
self.secret = config[u"secret"].decode(u"base64")
307
elif u"secfile" in config:
308
with open(os.path.expanduser(os.path.expandvars
309
(config[u"secfile"])),
310
"rb") as secfile:
311
self.secret = secfile.read()
535
312
else:
536
self.last_enabled = None
537
self.expires = None
538
539
logger.debug("Creating client %r", self.name)
540
logger.debug(" Fingerprint: %s", self.fingerprint)
541
self.created = settings.get("created",
542
datetime.datetime.utcnow())
543
544
# attributes specific for this server instance
313
raise TypeError(u"No secret or secfile for client %s"
314
% self.name)
315
self.host = config.get(u"host", u"")
316
self.created = datetime.datetime.utcnow()
317
self.enabled = False
318
self.last_enabled = None
319
self.last_checked_ok = None
320
self.timeout = string_to_delta(config[u"timeout"])
321
self.interval = string_to_delta(config[u"interval"])
322
self.disable_hook = disable_hook
545
323
self.checker = None
546
324
self.checker_initiator_tag = None
547
325
self.disable_initiator_tag = None
548
326
self.checker_callback_tag = None
327
self.checker_command = config[u"checker"]
549
328
self.current_checker_command = None
550
self.approved = None
329
self.last_connect = None
330
self._approved = None
331
self.approved_by_default = config.get(u"approved_by_default",
332
True)
551
333
self.approvals_pending = 0
552
self.changedstate = (multiprocessing_manager
553
.Condition(multiprocessing_manager
554
.Lock()))
555
self.client_structure = [attr for attr in
556
self.__dict__.iterkeys()
557
if not attr.startswith("_")]
558
self.client_structure.append("client_structure")
559
560
for name, t in inspect.getmembers(type(self),
561
lambda obj:
562
isinstance(obj,
563
property)):
564
if not name.startswith("_"):
565
self.client_structure.append(name)
334
self.approval_delay = string_to_delta(
335
config[u"approval_delay"])
336
self.approval_duration = string_to_delta(
337
config[u"approval_duration"])
338
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
566
339
567
# Send notice to process children that client state has changed
568
340
def send_changedstate(self):
569
with self.changedstate:
570
self.changedstate.notify_all()
571
341
self.changedstate.acquire()
342
self.changedstate.notify_all()
343
self.changedstate.release()
344
572
345
def enable(self):
573
346
"""Start this client's checker and timeout hooks"""
574
if getattr(self, "enabled", False):
347
if getattr(self, u"enabled", False):
575
348
# Already enabled
576
349
return
577
self.expires = datetime.datetime.utcnow() + self.timeout
578
self.enabled = True
350
self.send_changedstate()
579
351
self.last_enabled = datetime.datetime.utcnow()
580
self.init_checker()
581
self.send_changedstate()
352
# Schedule a new checker to be started an 'interval' from now,
353
# and every interval from then on.
354
self.checker_initiator_tag = (gobject.timeout_add
355
(self.interval_milliseconds(),
356
self.start_checker))
357
# Schedule a disable() when 'timeout' has passed
358
self.disable_initiator_tag = (gobject.timeout_add
359
(self.timeout_milliseconds(),
360
self.disable))
361
self.enabled = True
362
# Also start a new checker *right now*.
363
self.start_checker()
582
364
583
365
def disable(self, quiet=True):
584
366
"""Disable this client."""
585
367
if not getattr(self, "enabled", False):
586
368
return False
587
369
if not quiet:
588
logger.info("Disabling client %s", self.name)
589
if getattr(self, "disable_initiator_tag", None) is not None:
370
self.send_changedstate()
371
if not quiet:
372
logger.info(u"Disabling client %s", self.name)
373
if getattr(self, u"disable_initiator_tag", False):
590
374
gobject.source_remove(self.disable_initiator_tag)
591
375
self.disable_initiator_tag = None
592
self.expires = None
593
if getattr(self, "checker_initiator_tag", None) is not None:
376
if getattr(self, u"checker_initiator_tag", False):
594
377
gobject.source_remove(self.checker_initiator_tag)
595
378
self.checker_initiator_tag = None
596
379
self.stop_checker()
380
if self.disable_hook:
381
self.disable_hook(self)
597
382
self.enabled = False
598
if not quiet:
599
self.send_changedstate()
600
383
# Do not run this again if called by a gobject.timeout_add
601
384
return False
602
385
603
386
def __del__(self):
387
self.disable_hook = None
604
388
self.disable()
605
389
606
def init_checker(self):
607
# Schedule a new checker to be started an 'interval' from now,
608
# and every interval from then on.
609
if self.checker_initiator_tag is not None:
610
gobject.source_remove(self.checker_initiator_tag)
611
self.checker_initiator_tag = (gobject.timeout_add
612
(int(self.interval
613
.total_seconds() * 1000),
614
self.start_checker))
615
# Schedule a disable() when 'timeout' has passed
616
if self.disable_initiator_tag is not None:
617
gobject.source_remove(self.disable_initiator_tag)
618
self.disable_initiator_tag = (gobject.timeout_add
619
(int(self.timeout
620
.total_seconds() * 1000),
621
self.disable))
622
# Also start a new checker *right now*.
623
self.start_checker()
624
625
390
def checker_callback(self, pid, condition, command):
626
391
"""The checker has completed, so take appropriate actions."""
627
392
self.checker_callback_tag = None
628
393
self.checker = None
629
394
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
631
if self.last_checker_status == 0:
632
logger.info("Checker for %(name)s succeeded",
395
exitstatus = os.WEXITSTATUS(condition)
396
if exitstatus == 0:
397
logger.info(u"Checker for %(name)s succeeded",
633
398
vars(self))
634
399
self.checked_ok()
635
400
else:
636
logger.info("Checker for %(name)s failed",
401
logger.info(u"Checker for %(name)s failed",
637
402
vars(self))
638
403
else:
639
self.last_checker_status = -1
640
logger.warning("Checker for %(name)s crashed?",
404
logger.warning(u"Checker for %(name)s crashed?",
641
405
vars(self))
642
406
643
407
def checked_ok(self):
644
"""Assert that the client has been seen, alive and well."""
408
"""Bump up the timeout for this client.
409
410
This should only be called when the client has been seen,
411
alive and well.
412
"""
645
413
self.last_checked_ok = datetime.datetime.utcnow()
646
self.last_checker_status = 0
647
self.bump_timeout()
648
649
def bump_timeout(self, timeout=None):
650
"""Bump up the timeout for this client."""
651
if timeout is None:
652
timeout = self.timeout
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = None
656
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(int(timeout.total_seconds()
659
* 1000), self.disable))
660
self.expires = datetime.datetime.utcnow() + timeout
661
662
def need_approval(self):
663
self.last_approval_request = datetime.datetime.utcnow()
414
gobject.source_remove(self.disable_initiator_tag)
415
self.disable_initiator_tag = (gobject.timeout_add
416
(self.timeout_milliseconds(),
417
self.disable))
664
418
665
419
def start_checker(self):
666
420
"""Start a new checker subprocess if one is not running.
668
422
If a checker already exists, leave it running and do
669
423
nothing."""
670
424
# The reason for not killing a running checker is that if we
671
# did that, and if a checker (for some reason) started running
672
# slowly and taking more than 'interval' time, then the client
673
# would inevitably timeout, since no checker would get a
674
# chance to run to completion. If we instead leave running
425
# did that, then if a checker (for some reason) started
426
# running slowly and taking more than 'interval' time, the
427
# client would inevitably timeout, since no checker would get
428
# a chance to run to completion. If we instead leave running
675
429
# checkers alone, the checker would have to take more time
676
430
# than 'timeout' for the client to be disabled, which is as it
677
431
# should be.
679
433
# If a checker exists, make sure it is not a zombie
680
434
try:
681
435
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
682
except AttributeError:
683
pass
684
except OSError as error:
685
if error.errno != errno.ECHILD:
686
raise
436
except (AttributeError, OSError), error:
437
if (isinstance(error, OSError)
438
and error.errno != errno.ECHILD):
439
raise error
687
440
else:
688
441
if pid:
689
logger.warning("Checker was a zombie")
442
logger.warning(u"Checker was a zombie")
690
443
gobject.source_remove(self.checker_callback_tag)
691
444
self.checker_callback(pid, status,
692
445
self.current_checker_command)
693
446
# Start a new checker if needed
694
447
if self.checker is None:
695
# Escape attributes for the shell
696
escaped_attrs = { attr:
697
re.escape(str(getattr(self, attr)))
698
for attr in self.runtime_expansions }
699
448
try:
700
command = self.checker_command % escaped_attrs
701
except TypeError as error:
702
logger.error('Could not format string "%s"',
703
self.checker_command, exc_info=error)
704
return True # Try again later
449
# In case checker_command has exactly one % operator
450
command = self.checker_command % self.host
451
except TypeError:
452
# Escape attributes for the shell
453
escaped_attrs = dict((key,
454
re.escape(unicode(str(val),
455
errors=
456
u'replace')))
457
for key, val in
458
vars(self).iteritems())
459
try:
460
command = self.checker_command % escaped_attrs
461
except TypeError, error:
462
logger.error(u'Could not format string "%s":'
463
u' %s', self.checker_command, error)
464
return True # Try again later
705
465
self.current_checker_command = command
706
466
try:
707
logger.info("Starting checker %r for %s",
467
logger.info(u"Starting checker %r for %s",
708
468
command, self.name)
709
469
# We don't need to redirect stdout and stderr, since
710
470
# in normal mode, that is already done by daemon(),
711
471
# and in debug mode we don't want to. (Stdin is
712
472
# always replaced by /dev/null.)
713
# The exception is when not debugging but nevertheless
714
# running in the foreground; use the previously
715
# created wnull.
716
popen_args = {}
717
if (not self.server_settings["debug"]
718
and self.server_settings["foreground"]):
719
popen_args.update({"stdout": wnull,
720
"stderr": wnull })
721
473
self.checker = subprocess.Popen(command,
722
474
close_fds=True,
723
shell=True, cwd="/",
724
**popen_args)
725
except OSError as error:
726
logger.error("Failed to start subprocess",
727
exc_info=error)
728
return True
729
self.checker_callback_tag = (gobject.child_watch_add
730
(self.checker.pid,
731
self.checker_callback,
732
data=command))
733
# The checker may have completed before the gobject
734
# watch was added. Check for this.
735
try:
475
shell=True, cwd=u"/")
476
self.checker_callback_tag = (gobject.child_watch_add
477
(self.checker.pid,
478
self.checker_callback,
479
data=command))
480
# The checker may have completed before the gobject
481
# watch was added. Check for this.
736
482
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
737
except OSError as error:
738
if error.errno == errno.ECHILD:
739
# This should never happen
740
logger.error("Child process vanished",
741
exc_info=error)
742
return True
743
raise
744
if pid:
745
gobject.source_remove(self.checker_callback_tag)
746
self.checker_callback(pid, status, command)
483
if pid:
484
gobject.source_remove(self.checker_callback_tag)
485
self.checker_callback(pid, status, command)
486
except OSError, error:
487
logger.error(u"Failed to start subprocess: %s",
488
error)
747
489
# Re-run this periodically if run by gobject.timeout_add
748
490
return True
749
491
752
494
if self.checker_callback_tag:
753
495
gobject.source_remove(self.checker_callback_tag)
754
496
self.checker_callback_tag = None
755
if getattr(self, "checker", None) is None:
497
if getattr(self, u"checker", None) is None:
756
498
return
757
logger.debug("Stopping checker for %(name)s", vars(self))
499
logger.debug(u"Stopping checker for %(name)s", vars(self))
758
500
try:
759
self.checker.terminate()
501
os.kill(self.checker.pid, signal.SIGTERM)
760
502
#time.sleep(0.5)
761
503
#if self.checker.poll() is None:
762
# self.checker.kill()
763
except OSError as error:
504
# os.kill(self.checker.pid, signal.SIGKILL)
505
except OSError, error:
764
506
if error.errno != errno.ESRCH: # No such process
765
507
raise
766
508
self.checker = None
767
509
768
769
def dbus_service_property(dbus_interface, signature="v",
770
access="readwrite", byte_arrays=False):
510
def dbus_service_property(dbus_interface, signature=u"v",
511
access=u"readwrite", byte_arrays=False):
771
512
"""Decorators for marking methods of a DBusObjectWithProperties to
772
513
become properties on the D-Bus.
773
514
780
521
"""
781
522
# Encoding deeply encoded byte arrays is not supported yet by the
782
523
# "Set" method, so we fail early here:
783
if byte_arrays and signature != "ay":
784
raise ValueError("Byte arrays not supported for non-'ay'"
785
" signature {!r}".format(signature))
524
if byte_arrays and signature != u"ay":
525
raise ValueError(u"Byte arrays not supported for non-'ay'"
526
u" signature %r" % signature)
786
527
def decorator(func):
787
528
func._dbus_is_property = True
788
529
func._dbus_interface = dbus_interface
789
530
func._dbus_signature = signature
790
531
func._dbus_access = access
791
532
func._dbus_name = func.__name__
792
if func._dbus_name.endswith("_dbus_property"):
533
if func._dbus_name.endswith(u"_dbus_property"):
793
534
func._dbus_name = func._dbus_name[:-14]
794
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
795
return func
796
return decorator
797
798
799
def dbus_interface_annotations(dbus_interface):
800
"""Decorator for marking functions returning interface annotations
801
802
Usage:
803
804
@dbus_interface_annotations("org.example.Interface")
805
def _foo(self): # Function name does not matter
806
return {"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property.EmitsChangedSignal":
808
"false"}
809
"""
810
def decorator(func):
811
func._dbus_is_interface = True
812
func._dbus_interface = dbus_interface
813
func._dbus_name = dbus_interface
814
return func
815
return decorator
816
817
818
def dbus_annotations(annotations):
819
"""Decorator to annotate D-Bus methods, signals or properties
820
Usage:
821
822
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
823
"org.freedesktop.DBus.Property."
824
"EmitsChangedSignal": "false"})
825
@dbus_service_property("org.example.Interface", signature="b",
826
access="r")
827
def Property_dbus_property(self):
828
return dbus.Boolean(False)
829
"""
830
def decorator(func):
831
func._dbus_annotations = annotations
535
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
832
536
return func
833
537
return decorator
834
538
836
540
class DBusPropertyException(dbus.exceptions.DBusException):
837
541
"""A base class for D-Bus property-related exceptions
838
542
"""
839
pass
543
def __unicode__(self):
544
return unicode(str(self))
545
840
546
841
547
class DBusPropertyAccessException(DBusPropertyException):
842
548
"""A property's access permissions disallows an operation.
852
558
853
559
class DBusObjectWithProperties(dbus.service.Object):
854
560
"""A D-Bus object with properties.
855
561
856
562
Classes inheriting from this can use the dbus_service_property
857
563
decorator to expose methods as D-Bus properties. It exposes the
858
564
standard Get(), Set(), and GetAll() methods on the D-Bus.
859
565
"""
860
566
861
567
@staticmethod
862
def _is_dbus_thing(thing):
863
"""Returns a function testing if an attribute is a D-Bus thing
864
865
If called like _is_dbus_thing("method") it returns a function
866
suitable for use as predicate to inspect.getmembers().
867
"""
868
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
869
False)
568
def _is_dbus_property(obj):
569
return getattr(obj, u"_dbus_is_property", False)
870
570
871
def _get_all_dbus_things(self, thing):
571
def _get_all_dbus_properties(self):
872
572
"""Returns a generator of (name, attribute) pairs
873
573
"""
874
return ((getattr(athing.__get__(self), "_dbus_name",
875
name),
876
athing.__get__(self))
877
for cls in self.__class__.__mro__
878
for name, athing in
879
inspect.getmembers(cls,
880
self._is_dbus_thing(thing)))
574
return ((prop._dbus_name, prop)
575
for name, prop in
576
inspect.getmembers(self, self._is_dbus_property))
881
577
882
578
def _get_dbus_property(self, interface_name, property_name):
883
579
"""Returns a bound method if one exists which is a D-Bus
884
580
property with the specified name and interface.
885
581
"""
886
for cls in self.__class__.__mro__:
887
for name, value in (inspect.getmembers
888
(cls,
889
self._is_dbus_thing("property"))):
890
if (value._dbus_name == property_name
891
and value._dbus_interface == interface_name):
892
return value.__get__(self)
893
582
for name in (property_name,
583
property_name + u"_dbus_property"):
584
prop = getattr(self, name, None)
585
if (prop is None
586
or not self._is_dbus_property(prop)
587
or prop._dbus_name != property_name
588
or (interface_name and prop._dbus_interface
589
and interface_name != prop._dbus_interface)):
590
continue
591
return prop
894
592
# No such property
895
raise DBusPropertyNotFound(self.dbus_object_path + ":"
896
+ interface_name + "."
593
raise DBusPropertyNotFound(self.dbus_object_path + u":"
594
+ interface_name + u"."
897
595
+ property_name)
898
596
899
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
900
out_signature="v")
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
598
out_signature=u"v")
901
599
def Get(self, interface_name, property_name):
902
600
"""Standard D-Bus property Get() method, see D-Bus standard.
903
601
"""
904
602
prop = self._get_dbus_property(interface_name, property_name)
905
if prop._dbus_access == "write":
603
if prop._dbus_access == u"write":
906
604
raise DBusPropertyAccessException(property_name)
907
605
value = prop()
908
if not hasattr(value, "variant_level"):
606
if not hasattr(value, u"variant_level"):
909
607
return value
910
608
return type(value)(value, variant_level=value.variant_level+1)
911
609
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
913
611
def Set(self, interface_name, property_name, value):
914
612
"""Standard D-Bus property Set() method, see D-Bus standard.
915
613
"""
916
614
prop = self._get_dbus_property(interface_name, property_name)
917
if prop._dbus_access == "read":
615
if prop._dbus_access == u"read":
918
616
raise DBusPropertyAccessException(property_name)
919
if prop._dbus_get_args_options["byte_arrays"]:
617
if prop._dbus_get_args_options[u"byte_arrays"]:
920
618
# The byte_arrays option is not supported yet on
921
619
# signatures other than "ay".
922
if prop._dbus_signature != "ay":
923
raise ValueError("Byte arrays not supported for non-"
924
"'ay' signature {!r}"
925
.format(prop._dbus_signature))
926
value = dbus.ByteArray(b''.join(chr(byte)
927
for byte in value))
620
if prop._dbus_signature != u"ay":
621
raise ValueError
622
value = dbus.ByteArray(''.join(unichr(byte)
623
for byte in value))
928
624
prop(value)
929
625
930
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
931
out_signature="a{sv}")
626
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
627
out_signature=u"a{sv}")
932
628
def GetAll(self, interface_name):
933
629
"""Standard D-Bus property GetAll() method, see D-Bus
934
630
standard.
935
631
936
632
Note: Will not include properties with access="write".
937
633
"""
938
properties = {}
939
for name, prop in self._get_all_dbus_things("property"):
634
all = {}
635
for name, prop in self._get_all_dbus_properties():
940
636
if (interface_name
941
637
and interface_name != prop._dbus_interface):
942
638
# Interface non-empty but did not match
943
639
continue
944
640
# Ignore write-only properties
945
if prop._dbus_access == "write":
641
if prop._dbus_access == u"write":
946
642
continue
947
643
value = prop()
948
if not hasattr(value, "variant_level"):
949
properties[name] = value
644
if not hasattr(value, u"variant_level"):
645
all[name] = value
950
646
continue
951
properties[name] = type(value)(value, variant_level=
952
value.variant_level+1)
953
return dbus.Dictionary(properties, signature="sv")
954
955
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
956
def PropertiesChanged(self, interface_name, changed_properties,
957
invalidated_properties):
958
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
959
standard.
960
"""
961
pass
647
all[name] = type(value)(value, variant_level=
648
value.variant_level+1)
649
return dbus.Dictionary(all, signature=u"sv")
962
650
963
651
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
964
out_signature="s",
652
out_signature=u"s",
965
653
path_keyword='object_path',
966
654
connection_keyword='connection')
967
655
def Introspect(self, object_path, connection):
968
"""Overloading of standard D-Bus method.
969
970
Inserts property tags and interface annotation tags.
656
"""Standard D-Bus method, overloaded to insert property tags.
971
657
"""
972
658
xmlstring = dbus.service.Object.Introspect(self, object_path,
973
659
connection)
974
660
try:
975
661
document = xml.dom.minidom.parseString(xmlstring)
976
662
def make_tag(document, name, prop):
977
e = document.createElement("property")
978
e.setAttribute("name", name)
979
e.setAttribute("type", prop._dbus_signature)
980
e.setAttribute("access", prop._dbus_access)
663
e = document.createElement(u"property")
664
e.setAttribute(u"name", name)
665
e.setAttribute(u"type", prop._dbus_signature)
666
e.setAttribute(u"access", prop._dbus_access)
981
667
return e
982
for if_tag in document.getElementsByTagName("interface"):
983
# Add property tags
668
for if_tag in document.getElementsByTagName(u"interface"):
984
669
for tag in (make_tag(document, name, prop)
985
670
for name, prop
986
in self._get_all_dbus_things("property")
671
in self._get_all_dbus_properties()
987
672
if prop._dbus_interface
988
== if_tag.getAttribute("name")):
673
== if_tag.getAttribute(u"name")):
989
674
if_tag.appendChild(tag)
990
# Add annotation tags
991
for typ in ("method", "signal", "property"):
992
for tag in if_tag.getElementsByTagName(typ):
993
annots = dict()
994
for name, prop in (self.
995
_get_all_dbus_things(typ)):
996
if (name == tag.getAttribute("name")
997
and prop._dbus_interface
998
== if_tag.getAttribute("name")):
999
annots.update(getattr
1000
(prop,
1001
"_dbus_annotations",
1002
{}))
1003
for name, value in annots.items():
1004
ann_tag = document.createElement(
1005
"annotation")
1006
ann_tag.setAttribute("name", name)
1007
ann_tag.setAttribute("value", value)
1008
tag.appendChild(ann_tag)
1009
# Add interface annotation tags
1010
for annotation, value in dict(
1011
itertools.chain.from_iterable(
1012
annotations().items()
1013
for name, annotations in
1014
self._get_all_dbus_things("interface")
1015
if name == if_tag.getAttribute("name")
1016
)).items():
1017
ann_tag = document.createElement("annotation")
1018
ann_tag.setAttribute("name", annotation)
1019
ann_tag.setAttribute("value", value)
1020
if_tag.appendChild(ann_tag)
1021
675
# Add the names to the return values for the
1022
676
# "org.freedesktop.DBus.Properties" methods
1023
if (if_tag.getAttribute("name")
1024
== "org.freedesktop.DBus.Properties"):
1025
for cn in if_tag.getElementsByTagName("method"):
1026
if cn.getAttribute("name") == "Get":
1027
for arg in cn.getElementsByTagName("arg"):
1028
if (arg.getAttribute("direction")
1029
== "out"):
1030
arg.setAttribute("name", "value")
1031
elif cn.getAttribute("name") == "GetAll":
1032
for arg in cn.getElementsByTagName("arg"):
1033
if (arg.getAttribute("direction")
1034
== "out"):
1035
arg.setAttribute("name", "props")
1036
xmlstring = document.toxml("utf-8")
677
if (if_tag.getAttribute(u"name")
678
== u"org.freedesktop.DBus.Properties"):
679
for cn in if_tag.getElementsByTagName(u"method"):
680
if cn.getAttribute(u"name") == u"Get":
681
for arg in cn.getElementsByTagName(u"arg"):
682
if (arg.getAttribute(u"direction")
683
== u"out"):
684
arg.setAttribute(u"name", u"value")
685
elif cn.getAttribute(u"name") == u"GetAll":
686
for arg in cn.getElementsByTagName(u"arg"):
687
if (arg.getAttribute(u"direction")
688
== u"out"):
689
arg.setAttribute(u"name", u"props")
690
xmlstring = document.toxml(u"utf-8")
1037
691
document.unlink()
1038
692
except (AttributeError, xml.dom.DOMException,
1039
xml.parsers.expat.ExpatError) as error:
1040
logger.error("Failed to override Introspection method",
1041
exc_info=error)
693
xml.parsers.expat.ExpatError), error:
694
logger.error(u"Failed to override Introspection method",
695
error)
1042
696
return xmlstring
1043
697
1044
698
1045
def datetime_to_dbus(dt, variant_level=0):
1046
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1047
if dt is None:
1048
return dbus.String("", variant_level = variant_level)
1049
return dbus.String(dt.isoformat(),
1050
variant_level=variant_level)
1051
1052
1053
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1054
"""A class decorator; applied to a subclass of
1055
dbus.service.Object, it will add alternate D-Bus attributes with
1056
interface names according to the "alt_interface_names" mapping.
1057
Usage:
1058
1059
@alternate_dbus_interfaces({"org.example.Interface":
1060
"net.example.AlternateInterface"})
1061
class SampleDBusObject(dbus.service.Object):
1062
@dbus.service.method("org.example.Interface")
1063
def SampleDBusMethod():
1064
pass
1065
1066
The above "SampleDBusMethod" on "SampleDBusObject" will be
1067
reachable via two interfaces: "org.example.Interface" and
1068
"net.example.AlternateInterface", the latter of which will have
1069
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1070
"true", unless "deprecate" is passed with a False value.
1071
1072
This works for methods and signals, and also for D-Bus properties
1073
(from DBusObjectWithProperties) and interfaces (from the
1074
dbus_interface_annotations decorator).
1075
"""
1076
def wrapper(cls):
1077
for orig_interface_name, alt_interface_name in (
1078
alt_interface_names.items()):
1079
attr = {}
1080
interface_names = set()
1081
# Go though all attributes of the class
1082
for attrname, attribute in inspect.getmembers(cls):
1083
# Ignore non-D-Bus attributes, and D-Bus attributes
1084
# with the wrong interface name
1085
if (not hasattr(attribute, "_dbus_interface")
1086
or not attribute._dbus_interface
1087
.startswith(orig_interface_name)):
1088
continue
1089
# Create an alternate D-Bus interface name based on
1090
# the current name
1091
alt_interface = (attribute._dbus_interface
1092
.replace(orig_interface_name,
1093
alt_interface_name))
1094
interface_names.add(alt_interface)
1095
# Is this a D-Bus signal?
1096
if getattr(attribute, "_dbus_is_signal", False):
1097
# Extract the original non-method undecorated
1098
# function by black magic
1099
nonmethod_func = (dict(
1100
zip(attribute.func_code.co_freevars,
1101
attribute.__closure__))["func"]
1102
.cell_contents)
1103
# Create a new, but exactly alike, function
1104
# object, and decorate it to be a new D-Bus signal
1105
# with the alternate D-Bus interface name
1106
new_function = (dbus.service.signal
1107
(alt_interface,
1108
attribute._dbus_signature)
1109
(types.FunctionType(
1110
nonmethod_func.func_code,
1111
nonmethod_func.func_globals,
1112
nonmethod_func.func_name,
1113
nonmethod_func.func_defaults,
1114
nonmethod_func.func_closure)))
1115
# Copy annotations, if any
1116
try:
1117
new_function._dbus_annotations = (
1118
dict(attribute._dbus_annotations))
1119
except AttributeError:
1120
pass
1121
# Define a creator of a function to call both the
1122
# original and alternate functions, so both the
1123
# original and alternate signals gets sent when
1124
# the function is called
1125
def fixscope(func1, func2):
1126
"""This function is a scope container to pass
1127
func1 and func2 to the "call_both" function
1128
outside of its arguments"""
1129
def call_both(*args, **kwargs):
1130
"""This function will emit two D-Bus
1131
signals by calling func1 and func2"""
1132
func1(*args, **kwargs)
1133
func2(*args, **kwargs)
1134
return call_both
1135
# Create the "call_both" function and add it to
1136
# the class
1137
attr[attrname] = fixscope(attribute, new_function)
1138
# Is this a D-Bus method?
1139
elif getattr(attribute, "_dbus_is_method", False):
1140
# Create a new, but exactly alike, function
1141
# object. Decorate it to be a new D-Bus method
1142
# with the alternate D-Bus interface name. Add it
1143
# to the class.
1144
attr[attrname] = (dbus.service.method
1145
(alt_interface,
1146
attribute._dbus_in_signature,
1147
attribute._dbus_out_signature)
1148
(types.FunctionType
1149
(attribute.func_code,
1150
attribute.func_globals,
1151
attribute.func_name,
1152
attribute.func_defaults,
1153
attribute.func_closure)))
1154
# Copy annotations, if any
1155
try:
1156
attr[attrname]._dbus_annotations = (
1157
dict(attribute._dbus_annotations))
1158
except AttributeError:
1159
pass
1160
# Is this a D-Bus property?
1161
elif getattr(attribute, "_dbus_is_property", False):
1162
# Create a new, but exactly alike, function
1163
# object, and decorate it to be a new D-Bus
1164
# property with the alternate D-Bus interface
1165
# name. Add it to the class.
1166
attr[attrname] = (dbus_service_property
1167
(alt_interface,
1168
attribute._dbus_signature,
1169
attribute._dbus_access,
1170
attribute
1171
._dbus_get_args_options
1172
["byte_arrays"])
1173
(types.FunctionType
1174
(attribute.func_code,
1175
attribute.func_globals,
1176
attribute.func_name,
1177
attribute.func_defaults,
1178
attribute.func_closure)))
1179
# Copy annotations, if any
1180
try:
1181
attr[attrname]._dbus_annotations = (
1182
dict(attribute._dbus_annotations))
1183
except AttributeError:
1184
pass
1185
# Is this a D-Bus interface?
1186
elif getattr(attribute, "_dbus_is_interface", False):
1187
# Create a new, but exactly alike, function
1188
# object. Decorate it to be a new D-Bus interface
1189
# with the alternate D-Bus interface name. Add it
1190
# to the class.
1191
attr[attrname] = (dbus_interface_annotations
1192
(alt_interface)
1193
(types.FunctionType
1194
(attribute.func_code,
1195
attribute.func_globals,
1196
attribute.func_name,
1197
attribute.func_defaults,
1198
attribute.func_closure)))
1199
if deprecate:
1200
# Deprecate all alternate interfaces
1201
iname="_AlternateDBusNames_interface_annotation{}"
1202
for interface_name in interface_names:
1203
@dbus_interface_annotations(interface_name)
1204
def func(self):
1205
return { "org.freedesktop.DBus.Deprecated":
1206
"true" }
1207
# Find an unused name
1208
for aname in (iname.format(i)
1209
for i in itertools.count()):
1210
if aname not in attr:
1211
attr[aname] = func
1212
break
1213
if interface_names:
1214
# Replace the class with a new subclass of it with
1215
# methods, signals, etc. as created above.
1216
cls = type(b"{}Alternate".format(cls.__name__),
1217
(cls,), attr)
1218
return cls
1219
return wrapper
1220
1221
1222
@alternate_dbus_interfaces({"se.recompile.Mandos":
1223
"se.bsnet.fukt.Mandos"})
1224
699
class ClientDBus(Client, DBusObjectWithProperties):
1225
700
"""A Client class using D-Bus
1226
701
1228
703
dbus_object_path: dbus.ObjectPath
1229
704
bus: dbus.SystemBus()
1230
705
"""
1231
1232
runtime_expansions = (Client.runtime_expansions
1233
+ ("dbus_object_path",))
1234
1235
_interface = "se.recompile.Mandos.Client"
1236
1237
706
# dbus.service.Object doesn't use super(), so we can't either.
1238
707
1239
708
def __init__(self, bus = None, *args, **kwargs):
709
self._approvals_pending = 0
1240
710
self.bus = bus
1241
711
Client.__init__(self, *args, **kwargs)
1242
712
# Only now, when this client is initialized, can it show up on
1243
713
# the D-Bus
1244
client_object_name = str(self.name).translate(
1245
{ord("."): ord("_"),
1246
ord("-"): ord("_")})
1247
714
self.dbus_object_path = (dbus.ObjectPath
1248
("/clients/" + client_object_name))
715
(u"/clients/"
716
+ self.name.replace(u".", u"_")))
1249
717
DBusObjectWithProperties.__init__(self, self.bus,
1250
718
self.dbus_object_path)
1251
1252
def notifychangeproperty(transform_func,
1253
dbus_name, type_func=lambda x: x,
1254
variant_level=1, invalidate_only=False,
1255
_interface=_interface):
1256
""" Modify a variable so that it's a property which announces
1257
its changes to DBus.
1258
1259
transform_fun: Function that takes a value and a variant_level
1260
and transforms it to a D-Bus type.
1261
dbus_name: D-Bus name of the variable
1262
type_func: Function that transform the value before sending it
1263
to the D-Bus. Default: no transform
1264
variant_level: D-Bus variant level. Default: 1
1265
"""
1266
attrname = "_{}".format(dbus_name)
1267
def setter(self, value):
1268
if hasattr(self, "dbus_object_path"):
1269
if (not hasattr(self, attrname) or
1270
type_func(getattr(self, attrname, None))
1271
!= type_func(value)):
1272
if invalidate_only:
1273
self.PropertiesChanged(_interface,
1274
dbus.Dictionary(),
1275
dbus.Array
1276
((dbus_name,)))
1277
else:
1278
dbus_value = transform_func(type_func(value),
1279
variant_level
1280
=variant_level)
1281
self.PropertyChanged(dbus.String(dbus_name),
1282
dbus_value)
1283
self.PropertiesChanged(_interface,
1284
dbus.Dictionary({
1285
dbus.String(dbus_name):
1286
dbus_value }), dbus.Array())
1287
setattr(self, attrname, value)
1288
1289
return property(lambda self: getattr(self, attrname), setter)
1290
1291
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1292
approvals_pending = notifychangeproperty(dbus.Boolean,
1293
"ApprovalPending",
1294
type_func = bool)
1295
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1296
last_enabled = notifychangeproperty(datetime_to_dbus,
1297
"LastEnabled")
1298
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1299
type_func = lambda checker:
1300
checker is not None)
1301
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1302
"LastCheckedOK")
1303
last_checker_status = notifychangeproperty(dbus.Int16,
1304
"LastCheckerStatus")
1305
last_approval_request = notifychangeproperty(
1306
datetime_to_dbus, "LastApprovalRequest")
1307
approved_by_default = notifychangeproperty(dbus.Boolean,
1308
"ApprovedByDefault")
1309
approval_delay = notifychangeproperty(dbus.UInt64,
1310
"ApprovalDelay",
1311
type_func =
1312
lambda td: td.total_seconds()
1313
* 1000)
1314
approval_duration = notifychangeproperty(
1315
dbus.UInt64, "ApprovalDuration",
1316
type_func = lambda td: td.total_seconds() * 1000)
1317
host = notifychangeproperty(dbus.String, "Host")
1318
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1319
type_func = lambda td:
1320
td.total_seconds() * 1000)
1321
extended_timeout = notifychangeproperty(
1322
dbus.UInt64, "ExtendedTimeout",
1323
type_func = lambda td: td.total_seconds() * 1000)
1324
interval = notifychangeproperty(dbus.UInt64,
1325
"Interval",
1326
type_func =
1327
lambda td: td.total_seconds()
1328
* 1000)
1329
checker_command = notifychangeproperty(dbus.String, "Checker")
1330
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1331
invalidate_only=True)
1332
1333
del notifychangeproperty
719
720
def _get_approvals_pending(self):
721
return self._approvals_pending
722
def _set_approvals_pending(self, value):
723
old_value = self._approvals_pending
724
self._approvals_pending = value
725
bval = bool(value)
726
if (hasattr(self, "dbus_object_path")
727
and bval is not bool(old_value)):
728
dbus_bool = dbus.Boolean(bval, variant_level=1)
729
self.PropertyChanged(dbus.String(u"ApprovalPending"),
730
dbus_bool)
731
732
approvals_pending = property(_get_approvals_pending,
733
_set_approvals_pending)
734
del _get_approvals_pending, _set_approvals_pending
735
736
@staticmethod
737
def _datetime_to_dbus(dt, variant_level=0):
738
"""Convert a UTC datetime.datetime() to a D-Bus type."""
739
return dbus.String(dt.isoformat(),
740
variant_level=variant_level)
741
742
def enable(self):
743
oldstate = getattr(self, u"enabled", False)
744
r = Client.enable(self)
745
if oldstate != self.enabled:
746
# Emit D-Bus signals
747
self.PropertyChanged(dbus.String(u"Enabled"),
748
dbus.Boolean(True, variant_level=1))
749
self.PropertyChanged(
750
dbus.String(u"LastEnabled"),
751
self._datetime_to_dbus(self.last_enabled,
752
variant_level=1))
753
return r
754
755
def disable(self, quiet = False):
756
oldstate = getattr(self, u"enabled", False)
757
r = Client.disable(self, quiet=quiet)
758
if not quiet and oldstate != self.enabled:
759
# Emit D-Bus signal
760
self.PropertyChanged(dbus.String(u"Enabled"),
761
dbus.Boolean(False, variant_level=1))
762
return r
1334
763
1335
764
def __del__(self, *args, **kwargs):
1336
765
try:
1337
766
self.remove_from_connection()
1338
767
except LookupError:
1339
768
pass
1340
if hasattr(DBusObjectWithProperties, "__del__"):
769
if hasattr(DBusObjectWithProperties, u"__del__"):
1341
770
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1342
771
Client.__del__(self, *args, **kwargs)
1343
772
1345
774
*args, **kwargs):
1346
775
self.checker_callback_tag = None
1347
776
self.checker = None
777
# Emit D-Bus signal
778
self.PropertyChanged(dbus.String(u"CheckerRunning"),
779
dbus.Boolean(False, variant_level=1))
1348
780
if os.WIFEXITED(condition):
1349
781
exitstatus = os.WEXITSTATUS(condition)
1350
782
# Emit D-Bus signal
1360
792
return Client.checker_callback(self, pid, condition, command,
1361
793
*args, **kwargs)
1362
794
795
def checked_ok(self, *args, **kwargs):
796
r = Client.checked_ok(self, *args, **kwargs)
797
# Emit D-Bus signal
798
self.PropertyChanged(
799
dbus.String(u"LastCheckedOK"),
800
(self._datetime_to_dbus(self.last_checked_ok,
801
variant_level=1)))
802
return r
803
1363
804
def start_checker(self, *args, **kwargs):
1364
old_checker_pid = getattr(self.checker, "pid", None)
805
old_checker = self.checker
806
if self.checker is not None:
807
old_checker_pid = self.checker.pid
808
else:
809
old_checker_pid = None
1365
810
r = Client.start_checker(self, *args, **kwargs)
1366
811
# Only if new checker process was started
1367
812
if (self.checker is not None
1368
813
and old_checker_pid != self.checker.pid):
1369
814
# Emit D-Bus signal
1370
815
self.CheckerStarted(self.current_checker_command)
816
self.PropertyChanged(
817
dbus.String(u"CheckerRunning"),
818
dbus.Boolean(True, variant_level=1))
1371
819
return r
1372
820
821
def stop_checker(self, *args, **kwargs):
822
old_checker = getattr(self, u"checker", None)
823
r = Client.stop_checker(self, *args, **kwargs)
824
if (old_checker is not None
825
and getattr(self, u"checker", None) is None):
826
self.PropertyChanged(dbus.String(u"CheckerRunning"),
827
dbus.Boolean(False, variant_level=1))
828
return r
829
1373
830
def _reset_approved(self):
1374
self.approved = None
831
self._approved = None
1375
832
return False
1376
833
1377
834
def approve(self, value=True):
1378
self.approved = value
1379
gobject.timeout_add(int(self.approval_duration.total_seconds()
1380
* 1000), self._reset_approved)
1381
835
self.send_changedstate()
836
self._approved = value
837
gobject.timeout_add(self._timedelta_to_milliseconds
838
(self.approval_duration),
839
self._reset_approved)
840
1382
841
1383
842
## D-Bus methods, signals & properties
1384
1385
## Interfaces
843
_interface = u"se.bsnet.fukt.Mandos.Client"
1386
844
1387
845
## Signals
1388
846
1389
847
# CheckerCompleted - signal
1390
@dbus.service.signal(_interface, signature="nxs")
848
@dbus.service.signal(_interface, signature=u"nxs")
1391
849
def CheckerCompleted(self, exitcode, waitstatus, command):
1392
850
"D-Bus signal"
1393
851
pass
1394
852
1395
853
# CheckerStarted - signal
1396
@dbus.service.signal(_interface, signature="s")
854
@dbus.service.signal(_interface, signature=u"s")
1397
855
def CheckerStarted(self, command):
1398
856
"D-Bus signal"
1399
857
pass
1400
858
1401
859
# PropertyChanged - signal
1402
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1403
@dbus.service.signal(_interface, signature="sv")
860
@dbus.service.signal(_interface, signature=u"sv")
1404
861
def PropertyChanged(self, property, value):
1405
862
"D-Bus signal"
1406
863
pass
1415
872
pass
1416
873
1417
874
# Rejected - signal
1418
@dbus.service.signal(_interface, signature="s")
875
@dbus.service.signal(_interface, signature=u"s")
1419
876
def Rejected(self, reason):
1420
877
"D-Bus signal"
1421
878
pass
1422
879
1423
880
# NeedApproval - signal
1424
@dbus.service.signal(_interface, signature="tb")
881
@dbus.service.signal(_interface, signature=u"tb")
1425
882
def NeedApproval(self, timeout, default):
1426
883
"D-Bus signal"
1427
return self.need_approval()
884
pass
1428
885
1429
886
## Methods
1430
887
1431
888
# Approve - method
1432
@dbus.service.method(_interface, in_signature="b")
889
@dbus.service.method(_interface, in_signature=u"b")
1433
890
def Approve(self, value):
1434
891
self.approve(value)
1435
892
1436
893
# CheckedOK - method
1437
894
@dbus.service.method(_interface)
1438
895
def CheckedOK(self):
1439
self.checked_ok()
896
return self.checked_ok()
1440
897
1441
898
# Enable - method
1442
899
@dbus.service.method(_interface)
1464
921
## Properties
1465
922
1466
923
# ApprovalPending - property
1467
@dbus_service_property(_interface, signature="b", access="read")
924
@dbus_service_property(_interface, signature=u"b", access=u"read")
1468
925
def ApprovalPending_dbus_property(self):
1469
926
return dbus.Boolean(bool(self.approvals_pending))
1470
927
1471
928
# ApprovedByDefault - property
1472
@dbus_service_property(_interface, signature="b",
1473
access="readwrite")
929
@dbus_service_property(_interface, signature=u"b",
930
access=u"readwrite")
1474
931
def ApprovedByDefault_dbus_property(self, value=None):
1475
932
if value is None: # get
1476
933
return dbus.Boolean(self.approved_by_default)
1477
934
self.approved_by_default = bool(value)
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
937
dbus.Boolean(value, variant_level=1))
1478
938
1479
939
# ApprovalDelay - property
1480
@dbus_service_property(_interface, signature="t",
1481
access="readwrite")
940
@dbus_service_property(_interface, signature=u"t",
941
access=u"readwrite")
1482
942
def ApprovalDelay_dbus_property(self, value=None):
1483
943
if value is None: # get
1484
return dbus.UInt64(self.approval_delay.total_seconds()
1485
* 1000)
944
return dbus.UInt64(self.approval_delay_milliseconds())
1486
945
self.approval_delay = datetime.timedelta(0, 0, 0, value)
946
# Emit D-Bus signal
947
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
948
dbus.UInt64(value, variant_level=1))
1487
949
1488
950
# ApprovalDuration - property
1489
@dbus_service_property(_interface, signature="t",
1490
access="readwrite")
951
@dbus_service_property(_interface, signature=u"t",
952
access=u"readwrite")
1491
953
def ApprovalDuration_dbus_property(self, value=None):
1492
954
if value is None: # get
1493
return dbus.UInt64(self.approval_duration.total_seconds()
1494
* 1000)
955
return dbus.UInt64(self._timedelta_to_milliseconds(
956
self.approval_duration))
1495
957
self.approval_duration = datetime.timedelta(0, 0, 0, value)
958
# Emit D-Bus signal
959
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
960
dbus.UInt64(value, variant_level=1))
1496
961
1497
962
# Name - property
1498
@dbus_service_property(_interface, signature="s", access="read")
963
@dbus_service_property(_interface, signature=u"s", access=u"read")
1499
964
def Name_dbus_property(self):
1500
965
return dbus.String(self.name)
1501
966
1502
967
# Fingerprint - property
1503
@dbus_service_property(_interface, signature="s", access="read")
968
@dbus_service_property(_interface, signature=u"s", access=u"read")
1504
969
def Fingerprint_dbus_property(self):
1505
970
return dbus.String(self.fingerprint)
1506
971
1507
972
# Host - property
1508
@dbus_service_property(_interface, signature="s",
1509
access="readwrite")
973
@dbus_service_property(_interface, signature=u"s",
974
access=u"readwrite")
1510
975
def Host_dbus_property(self, value=None):
1511
976
if value is None: # get
1512
977
return dbus.String(self.host)
1513
self.host = str(value)
978
self.host = value
979
# Emit D-Bus signal
980
self.PropertyChanged(dbus.String(u"Host"),
981
dbus.String(value, variant_level=1))
1514
982
1515
983
# Created - property
1516
@dbus_service_property(_interface, signature="s", access="read")
984
@dbus_service_property(_interface, signature=u"s", access=u"read")
1517
985
def Created_dbus_property(self):
1518
return datetime_to_dbus(self.created)
986
return dbus.String(self._datetime_to_dbus(self.created))
1519
987
1520
988
# LastEnabled - property
1521
@dbus_service_property(_interface, signature="s", access="read")
989
@dbus_service_property(_interface, signature=u"s", access=u"read")
1522
990
def LastEnabled_dbus_property(self):
1523
return datetime_to_dbus(self.last_enabled)
991
if self.last_enabled is None:
992
return dbus.String(u"")
993
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1524
994
1525
995
# Enabled - property
1526
@dbus_service_property(_interface, signature="b",
1527
access="readwrite")
996
@dbus_service_property(_interface, signature=u"b",
997
access=u"readwrite")
1528
998
def Enabled_dbus_property(self, value=None):
1529
999
if value is None: # get
1530
1000
return dbus.Boolean(self.enabled)
1534
1004
self.disable()
1535
1005
1536
1006
# LastCheckedOK - property
1537
@dbus_service_property(_interface, signature="s",
1538
access="readwrite")
1007
@dbus_service_property(_interface, signature=u"s",
1008
access=u"readwrite")
1539
1009
def LastCheckedOK_dbus_property(self, value=None):
1540
1010
if value is not None:
1541
1011
self.checked_ok()
1542
1012
return
1543
return datetime_to_dbus(self.last_checked_ok)
1544
1545
# LastCheckerStatus - property
1546
@dbus_service_property(_interface, signature="n",
1547
access="read")
1548
def LastCheckerStatus_dbus_property(self):
1549
return dbus.Int16(self.last_checker_status)
1550
1551
# Expires - property
1552
@dbus_service_property(_interface, signature="s", access="read")
1553
def Expires_dbus_property(self):
1554
return datetime_to_dbus(self.expires)
1555
1556
# LastApprovalRequest - property
1557
@dbus_service_property(_interface, signature="s", access="read")
1558
def LastApprovalRequest_dbus_property(self):
1559
return datetime_to_dbus(self.last_approval_request)
1013
if self.last_checked_ok is None:
1014
return dbus.String(u"")
1015
return dbus.String(self._datetime_to_dbus(self
1016
.last_checked_ok))
1560
1017
1561
1018
# Timeout - property
1562
@dbus_service_property(_interface, signature="t",
1563
access="readwrite")
1019
@dbus_service_property(_interface, signature=u"t",
1020
access=u"readwrite")
1564
1021
def Timeout_dbus_property(self, value=None):
1565
1022
if value is None: # get
1566
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1567
old_timeout = self.timeout
1023
return dbus.UInt64(self.timeout_milliseconds())
1568
1024
self.timeout = datetime.timedelta(0, 0, 0, value)
1569
# Reschedule disabling
1570
if self.enabled:
1571
now = datetime.datetime.utcnow()
1572
self.expires += self.timeout - old_timeout
1573
if self.expires <= now:
1574
# The timeout has passed
1575
self.disable()
1576
else:
1577
if (getattr(self, "disable_initiator_tag", None)
1578
is None):
1579
return
1580
gobject.source_remove(self.disable_initiator_tag)
1581
self.disable_initiator_tag = (
1582
gobject.timeout_add(
1583
int((self.expires - now).total_seconds()
1584
* 1000), self.disable))
1585
1586
# ExtendedTimeout - property
1587
@dbus_service_property(_interface, signature="t",
1588
access="readwrite")
1589
def ExtendedTimeout_dbus_property(self, value=None):
1590
if value is None: # get
1591
return dbus.UInt64(self.extended_timeout.total_seconds()
1592
* 1000)
1593
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1025
# Emit D-Bus signal
1026
self.PropertyChanged(dbus.String(u"Timeout"),
1027
dbus.UInt64(value, variant_level=1))
1028
if getattr(self, u"disable_initiator_tag", None) is None:
1029
return
1030
# Reschedule timeout
1031
gobject.source_remove(self.disable_initiator_tag)
1032
self.disable_initiator_tag = None
1033
time_to_die = (self.
1034
_timedelta_to_milliseconds((self
1035
.last_checked_ok
1036
+ self.timeout)
1037
- datetime.datetime
1038
.utcnow()))
1039
if time_to_die <= 0:
1040
# The timeout has passed
1041
self.disable()
1042
else:
1043
self.disable_initiator_tag = (gobject.timeout_add
1044
(time_to_die, self.disable))
1594
1045
1595
1046
# Interval - property
1596
@dbus_service_property(_interface, signature="t",
1597
access="readwrite")
1047
@dbus_service_property(_interface, signature=u"t",
1048
access=u"readwrite")
1598
1049
def Interval_dbus_property(self, value=None):
1599
1050
if value is None: # get
1600
return dbus.UInt64(self.interval.total_seconds() * 1000)
1051
return dbus.UInt64(self.interval_milliseconds())
1601
1052
self.interval = datetime.timedelta(0, 0, 0, value)
1602
if getattr(self, "checker_initiator_tag", None) is None:
1053
# Emit D-Bus signal
1054
self.PropertyChanged(dbus.String(u"Interval"),
1055
dbus.UInt64(value, variant_level=1))
1056
if getattr(self, u"checker_initiator_tag", None) is None:
1603
1057
return
1604
if self.enabled:
1605
# Reschedule checker run
1606
gobject.source_remove(self.checker_initiator_tag)
1607
self.checker_initiator_tag = (gobject.timeout_add
1608
(value, self.start_checker))
1609
self.start_checker() # Start one now, too
1610
1058
# Reschedule checker run
1059
gobject.source_remove(self.checker_initiator_tag)
1060
self.checker_initiator_tag = (gobject.timeout_add
1061
(value, self.start_checker))
1062
self.start_checker() # Start one now, too
1063
1611
1064
# Checker - property
1612
@dbus_service_property(_interface, signature="s",
1613
access="readwrite")
1065
@dbus_service_property(_interface, signature=u"s",
1066
access=u"readwrite")
1614
1067
def Checker_dbus_property(self, value=None):
1615
1068
if value is None: # get
1616
1069
return dbus.String(self.checker_command)
1617
self.checker_command = str(value)
1070
self.checker_command = value
1071
# Emit D-Bus signal
1072
self.PropertyChanged(dbus.String(u"Checker"),
1073
dbus.String(self.checker_command,
1074
variant_level=1))
1618
1075
1619
1076
# CheckerRunning - property
1620
@dbus_service_property(_interface, signature="b",
1621
access="readwrite")
1077
@dbus_service_property(_interface, signature=u"b",
1078
access=u"readwrite")
1622
1079
def CheckerRunning_dbus_property(self, value=None):
1623
1080
if value is None: # get
1624
1081
return dbus.Boolean(self.checker is not None)
1628
1085
self.stop_checker()
1629
1086
1630
1087
# ObjectPath - property
1631
@dbus_service_property(_interface, signature="o", access="read")
1088
@dbus_service_property(_interface, signature=u"o", access=u"read")
1632
1089
def ObjectPath_dbus_property(self):
1633
1090
return self.dbus_object_path # is already a dbus.ObjectPath
1634
1091
1635
1092
# Secret = property
1636
@dbus_service_property(_interface, signature="ay",
1637
access="write", byte_arrays=True)
1093
@dbus_service_property(_interface, signature=u"ay",
1094
access=u"write", byte_arrays=True)
1638
1095
def Secret_dbus_property(self, value):
1639
self.secret = bytes(value)
1096
self.secret = str(value)
1640
1097
1641
1098
del _interface
1642
1099
1647
1104
self._pipe.send(('init', fpr, address))
1648
1105
if not self._pipe.recv():
1649
1106
raise KeyError()
1650
1107
1651
1108
def __getattribute__(self, name):
1652
if name == '_pipe':
1109
if(name == '_pipe'):
1653
1110
return super(ProxyClient, self).__getattribute__(name)
1654
1111
self._pipe.send(('getattr', name))
1655
1112
data = self._pipe.recv()
1660
1117
self._pipe.send(('funcall', name, args, kwargs))
1661
1118
return self._pipe.recv()[1]
1662
1119
return func
1663
1120
1664
1121
def __setattr__(self, name, value):
1665
if name == '_pipe':
1122
if(name == '_pipe'):
1666
1123
return super(ProxyClient, self).__setattr__(name, value)
1667
1124
self._pipe.send(('setattr', name, value))
1668
1125
1675
1132
1676
1133
def handle(self):
1677
1134
with contextlib.closing(self.server.child_pipe) as child_pipe:
1678
logger.info("TCP connection from: %s",
1679
str(self.client_address))
1680
logger.debug("Pipe FD: %d",
1135
logger.info(u"TCP connection from: %s",
1136
unicode(self.client_address))
1137
logger.debug(u"Pipe FD: %d",
1681
1138
self.server.child_pipe.fileno())
1682
1139
1683
1140
session = (gnutls.connection
1684
1141
.ClientSession(self.request,
1685
1142
gnutls.connection
1686
1143
.X509Credentials()))
1687
1144
1688
1145
# Note: gnutls.connection.X509Credentials is really a
1689
1146
# generic GnuTLS certificate credentials object so long as
1690
1147
# no X.509 keys are added to it. Therefore, we can use it
1691
1148
# here despite using OpenPGP certificates.
1692
1693
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1694
# "+AES-256-CBC", "+SHA1",
1695
# "+COMP-NULL", "+CTYPE-OPENPGP",
1696
# "+DHE-DSS"))
1149
1150
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1151
# u"+AES-256-CBC", u"+SHA1",
1152
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1153
# u"+DHE-DSS"))
1697
1154
# Use a fallback default, since this MUST be set.
1698
1155
priority = self.server.gnutls_priority
1699
1156
if priority is None:
1700
priority = "NORMAL"
1157
priority = u"NORMAL"
1701
1158
(gnutls.library.functions
1702
1159
.gnutls_priority_set_direct(session._c_object,
1703
1160
priority, None))
1704
1161
1705
1162
# Start communication using the Mandos protocol
1706
1163
# Get protocol number
1707
1164
line = self.request.makefile().readline()
1708
logger.debug("Protocol version: %r", line)
1165
logger.debug(u"Protocol version: %r", line)
1709
1166
try:
1710
1167
if int(line.strip().split()[0]) > 1:
1711
raise RuntimeError(line)
1712
except (ValueError, IndexError, RuntimeError) as error:
1713
logger.error("Unknown protocol version: %s", error)
1168
raise RuntimeError
1169
except (ValueError, IndexError, RuntimeError), error:
1170
logger.error(u"Unknown protocol version: %s", error)
1714
1171
return
1715
1172
1716
1173
# Start GnuTLS connection
1717
1174
try:
1718
1175
session.handshake()
1719
except gnutls.errors.GNUTLSError as error:
1720
logger.warning("Handshake failed: %s", error)
1176
except gnutls.errors.GNUTLSError, error:
1177
logger.warning(u"Handshake failed: %s", error)
1721
1178
# Do not run session.bye() here: the session is not
1722
1179
# established. Just abandon the request.
1723
1180
return
1724
logger.debug("Handshake succeeded")
1725
1181
logger.debug(u"Handshake succeeded")
1182
1726
1183
approval_required = False
1727
1184
try:
1728
1185
try:
1729
1186
fpr = self.fingerprint(self.peer_certificate
1730
1187
(session))
1731
except (TypeError,
1732
gnutls.errors.GNUTLSError) as error:
1733
logger.warning("Bad certificate: %s", error)
1188
except (TypeError, gnutls.errors.GNUTLSError), error:
1189
logger.warning(u"Bad certificate: %s", error)
1734
1190
return
1735
logger.debug("Fingerprint: %s", fpr)
1736
1191
logger.debug(u"Fingerprint: %s", fpr)
1192
1737
1193
try:
1738
1194
client = ProxyClient(child_pipe, fpr,
1739
1195
self.client_address)
1747
1203
1748
1204
while True:
1749
1205
if not client.enabled:
1750
logger.info("Client %s is disabled",
1206
logger.warning(u"Client %s is disabled",
1751
1207
client.name)
1752
1208
if self.server.use_dbus:
1753
1209
# Emit D-Bus signal
1754
client.Rejected("Disabled")
1210
client.Rejected("Disabled")
1755
1211
return
1756
1212
1757
if client.approved or not client.approval_delay:
1213
if client._approved or not client.approval_delay:
1758
1214
#We are approved or approval is disabled
1759
1215
break
1760
elif client.approved is None:
1761
logger.info("Client %s needs approval",
1216
elif client._approved is None:
1217
logger.info(u"Client %s needs approval",
1762
1218
client.name)
1763
1219
if self.server.use_dbus:
1764
1220
# Emit D-Bus signal
1765
1221
client.NeedApproval(
1766
client.approval_delay.total_seconds()
1767
* 1000, client.approved_by_default)
1222
client.approval_delay_milliseconds(),
1223
client.approved_by_default)
1768
1224
else:
1769
logger.warning("Client %s was not approved",
1225
logger.warning(u"Client %s was not approved",
1770
1226
client.name)
1771
1227
if self.server.use_dbus:
1772
1228
# Emit D-Bus signal
1774
1230
return
1775
1231
1776
1232
#wait until timeout or approved
1233
#x = float(client._timedelta_to_milliseconds(delay))
1777
1234
time = datetime.datetime.now()
1778
1235
client.changedstate.acquire()
1779
client.changedstate.wait(delay.total_seconds())
1236
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1780
1237
client.changedstate.release()
1781
1238
time2 = datetime.datetime.now()
1782
1239
if (time2 - time) >= delay:
1786
1243
client.name)
1787
1244
if self.server.use_dbus:
1788
1245
# Emit D-Bus signal
1789
client.Rejected("Approval timed out")
1246
client.Rejected("Timed out")
1790
1247
return
1791
1248
else:
1792
1249
break
1797
1254
while sent_size < len(client.secret):
1798
1255
try:
1799
1256
sent = session.send(client.secret[sent_size:])
1800
except gnutls.errors.GNUTLSError as error:
1801
logger.warning("gnutls send failed",
1802
exc_info=error)
1257
except (gnutls.errors.GNUTLSError), error:
1258
logger.warning("gnutls send failed")
1803
1259
return
1804
logger.debug("Sent: %d, remaining: %d",
1260
logger.debug(u"Sent: %d, remaining: %d",
1805
1261
sent, len(client.secret)
1806
1262
- (sent_size + sent))
1807
1263
sent_size += sent
1808
1809
logger.info("Sending secret to %s", client.name)
1810
# bump the timeout using extended_timeout
1811
client.bump_timeout(client.extended_timeout)
1264
1265
logger.info(u"Sending secret to %s", client.name)
1266
# bump the timeout as if seen
1267
client.checked_ok()
1812
1268
if self.server.use_dbus:
1813
1269
# Emit D-Bus signal
1814
1270
client.GotSecret()
1818
1274
client.approvals_pending -= 1
1819
1275
try:
1820
1276
session.bye()
1821
except gnutls.errors.GNUTLSError as error:
1822
logger.warning("GnuTLS bye failed",
1823
exc_info=error)
1277
except (gnutls.errors.GNUTLSError), error:
1278
logger.warning("GnuTLS bye failed")
1824
1279
1825
1280
@staticmethod
1826
1281
def peer_certificate(session):
1836
1291
.gnutls_certificate_get_peers
1837
1292
(session._c_object, ctypes.byref(list_size)))
1838
1293
if not bool(cert_list) and list_size.value != 0:
1839
raise gnutls.errors.GNUTLSError("error getting peer"
1840
" certificate")
1294
raise gnutls.errors.GNUTLSError(u"error getting peer"
1295
u" certificate")
1841
1296
if list_size.value == 0:
1842
1297
return None
1843
1298
cert = cert_list[0]
1869
1324
if crtverify.value != 0:
1870
1325
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1871
1326
raise (gnutls.errors.CertificateSecurityError
1872
("Verify failed"))
1327
(u"Verify failed"))
1873
1328
# New buffer for the fingerprint
1874
1329
buf = ctypes.create_string_buffer(20)
1875
1330
buf_len = ctypes.c_size_t()
1882
1337
# Convert the buffer to a Python bytestring
1883
1338
fpr = ctypes.string_at(buf, buf_len.value)
1884
1339
# Convert the bytestring to hexadecimal notation
1885
hex_fpr = binascii.hexlify(fpr).upper()
1340
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1886
1341
return hex_fpr
1887
1342
1888
1343
1891
1346
def sub_process_main(self, request, address):
1892
1347
try:
1893
1348
self.finish_request(request, address)
1894
except Exception:
1349
except:
1895
1350
self.handle_error(request, address)
1896
1351
self.close_request(request)
1897
1352
1898
1353
def process_request(self, request, address):
1899
1354
"""Start a new process to process the request."""
1900
proc = multiprocessing.Process(target = self.sub_process_main,
1901
args = (request, address))
1902
proc.start()
1903
return proc
1904
1355
multiprocessing.Process(target = self.sub_process_main,
1356
args = (request, address)).start()
1905
1357
1906
1358
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1907
1359
""" adds a pipe to the MixIn """
1911
1363
This function creates a new pipe in self.pipe
1912
1364
"""
1913
1365
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1914
1915
proc = MultiprocessingMixIn.process_request(self, request,
1916
client_address)
1366
1367
super(MultiprocessingMixInWithPipe,
1368
self).process_request(request, client_address)
1917
1369
self.child_pipe.close()
1918
self.add_pipe(parent_pipe, proc)
1919
1920
def add_pipe(self, parent_pipe, proc):
1370
self.add_pipe(parent_pipe)
1371
1372
def add_pipe(self, parent_pipe):
1921
1373
"""Dummy function; override as necessary"""
1922
raise NotImplementedError()
1923
1374
pass
1924
1375
1925
1376
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1926
1377
socketserver.TCPServer, object):
1932
1383
use_ipv6: Boolean; to use IPv6 or not
1933
1384
"""
1934
1385
def __init__(self, server_address, RequestHandlerClass,
1935
interface=None, use_ipv6=True, socketfd=None):
1936
"""If socketfd is set, use that file descriptor instead of
1937
creating a new one with socket.socket().
1938
"""
1386
interface=None, use_ipv6=True):
1939
1387
self.interface = interface
1940
1388
if use_ipv6:
1941
1389
self.address_family = socket.AF_INET6
1942
if socketfd is not None:
1943
# Save the file descriptor
1944
self.socketfd = socketfd
1945
# Save the original socket.socket() function
1946
self.socket_socket = socket.socket
1947
# To implement --socket, we monkey patch socket.socket.
1948
#
1949
# (When socketserver.TCPServer is a new-style class, we
1950
# could make self.socket into a property instead of monkey
1951
# patching socket.socket.)
1952
#
1953
# Create a one-time-only replacement for socket.socket()
1954
@functools.wraps(socket.socket)
1955
def socket_wrapper(*args, **kwargs):
1956
# Restore original function so subsequent calls are
1957
# not affected.
1958
socket.socket = self.socket_socket
1959
del self.socket_socket
1960
# This time only, return a new socket object from the
1961
# saved file descriptor.
1962
return socket.fromfd(self.socketfd, *args, **kwargs)
1963
# Replace socket.socket() function with wrapper
1964
socket.socket = socket_wrapper
1965
# The socketserver.TCPServer.__init__ will call
1966
# socket.socket(), which might be our replacement,
1967
# socket_wrapper(), if socketfd was set.
1968
1390
socketserver.TCPServer.__init__(self, server_address,
1969
1391
RequestHandlerClass)
1970
1971
1392
def server_bind(self):
1972
1393
"""This overrides the normal server_bind() function
1973
1394
to bind to an interface if one was specified, and also NOT to
1974
1395
bind to an address or port if they were not specified."""
1975
1396
if self.interface is not None:
1976
1397
if SO_BINDTODEVICE is None:
1977
logger.error("SO_BINDTODEVICE does not exist;"
1978
" cannot bind to interface %s",
1398
logger.error(u"SO_BINDTODEVICE does not exist;"
1399
u" cannot bind to interface %s",
1979
1400
self.interface)
1980
1401
else:
1981
1402
try:
1982
1403
self.socket.setsockopt(socket.SOL_SOCKET,
1983
1404
SO_BINDTODEVICE,
1984
(self.interface + "\0")
1985
.encode("utf-8"))
1986
except socket.error as error:
1987
if error.errno == errno.EPERM:
1988
logger.error("No permission to bind to"
1989
" interface %s", self.interface)
1990
elif error.errno == errno.ENOPROTOOPT:
1991
logger.error("SO_BINDTODEVICE not available;"
1992
" cannot bind to interface %s",
1993
self.interface)
1994
elif error.errno == errno.ENODEV:
1995
logger.error("Interface %s does not exist,"
1996
" cannot bind", self.interface)
1405
str(self.interface
1406
+ u'\0'))
1407
except socket.error, error:
1408
if error[0] == errno.EPERM:
1409
logger.error(u"No permission to"
1410
u" bind to interface %s",
1411
self.interface)
1412
elif error[0] == errno.ENOPROTOOPT:
1413
logger.error(u"SO_BINDTODEVICE not available;"
1414
u" cannot bind to interface %s",
1415
self.interface)
1997
1416
else:
1998
1417
raise
1999
1418
# Only bind(2) the socket if we really need to.
2000
1419
if self.server_address[0] or self.server_address[1]:
2001
1420
if not self.server_address[0]:
2002
1421
if self.address_family == socket.AF_INET6:
2003
any_address = "::" # in6addr_any
1422
any_address = u"::" # in6addr_any
2004
1423
else:
2005
any_address = "0.0.0.0" # INADDR_ANY
1424
any_address = socket.INADDR_ANY
2006
1425
self.server_address = (any_address,
2007
1426
self.server_address[1])
2008
1427
elif not self.server_address[1]:
2029
1448
"""
2030
1449
def __init__(self, server_address, RequestHandlerClass,
2031
1450
interface=None, use_ipv6=True, clients=None,
2032
gnutls_priority=None, use_dbus=True, socketfd=None):
1451
gnutls_priority=None, use_dbus=True):
2033
1452
self.enabled = False
2034
1453
self.clients = clients
2035
1454
if self.clients is None:
2036
self.clients = {}
1455
self.clients = set()
2037
1456
self.use_dbus = use_dbus
2038
1457
self.gnutls_priority = gnutls_priority
2039
1458
IPv6_TCPServer.__init__(self, server_address,
2040
1459
RequestHandlerClass,
2041
1460
interface = interface,
2042
use_ipv6 = use_ipv6,
2043
socketfd = socketfd)
1461
use_ipv6 = use_ipv6)
2044
1462
def server_activate(self):
2045
1463
if self.enabled:
2046
1464
return socketserver.TCPServer.server_activate(self)
2047
2048
1465
def enable(self):
2049
1466
self.enabled = True
2050
2051
def add_pipe(self, parent_pipe, proc):
1467
def add_pipe(self, parent_pipe):
2052
1468
# Call "handle_ipc" for both data and EOF events
2053
1469
gobject.io_add_watch(parent_pipe.fileno(),
2054
1470
gobject.IO_IN | gobject.IO_HUP,
2055
1471
functools.partial(self.handle_ipc,
2056
parent_pipe =
2057
parent_pipe,
2058
proc = proc))
2059
1472
parent_pipe = parent_pipe))
1473
2060
1474
def handle_ipc(self, source, condition, parent_pipe=None,
2061
proc = None, client_object=None):
2062
# error, or the other end of multiprocessing.Pipe has closed
2063
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2064
# Wait for other process to exit
2065
proc.join()
1475
client_object=None):
1476
condition_names = {
1477
gobject.IO_IN: u"IN", # There is data to read.
1478
gobject.IO_OUT: u"OUT", # Data can be written (without
1479
# blocking).
1480
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1481
gobject.IO_ERR: u"ERR", # Error condition.
1482
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1483
# broken, usually for pipes and
1484
# sockets).
1485
}
1486
conditions_string = ' | '.join(name
1487
for cond, name in
1488
condition_names.iteritems()
1489
if cond & condition)
1490
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1491
conditions_string)
1492
1493
# error or the other end of multiprocessing.Pipe has closed
1494
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2066
1495
return False
2067
1496
2068
1497
# Read a request from the child
2069
1498
request = parent_pipe.recv()
1499
logger.debug(u"IPC request: %s", repr(request))
2070
1500
command = request[0]
2071
1501
2072
1502
if command == 'init':
2073
1503
fpr = request[1]
2074
1504
address = request[2]
2075
1505
2076
for c in self.clients.itervalues():
1506
for c in self.clients:
2077
1507
if c.fingerprint == fpr:
2078
1508
client = c
2079
1509
break
2080
1510
else:
2081
logger.info("Client not found for fingerprint: %s, ad"
2082
"dress: %s", fpr, address)
1511
logger.warning(u"Client not found for fingerprint: %s, ad"
1512
u"dress: %s", fpr, address)
2083
1513
if self.use_dbus:
2084
1514
# Emit D-Bus signal
2085
mandos_dbus_service.ClientNotFound(fpr,
2086
address[0])
1515
mandos_dbus_service.ClientNotFound(fpr, address)
2087
1516
parent_pipe.send(False)
2088
1517
return False
2089
1518
2090
1519
gobject.io_add_watch(parent_pipe.fileno(),
2091
1520
gobject.IO_IN | gobject.IO_HUP,
2092
1521
functools.partial(self.handle_ipc,
2093
parent_pipe =
2094
parent_pipe,
2095
proc = proc,
2096
client_object =
2097
client))
1522
parent_pipe = parent_pipe,
1523
client_object = client))
2098
1524
parent_pipe.send(True)
2099
# remove the old hook in favor of the new above hook on
2100
# same fileno
1525
# remove the old hook in favor of the new above hook on same fileno
2101
1526
return False
2102
1527
if command == 'funcall':
2103
1528
funcname = request[1]
2104
1529
args = request[2]
2105
1530
kwargs = request[3]
2106
1531
2107
parent_pipe.send(('data', getattr(client_object,
2108
funcname)(*args,
2109
**kwargs)))
2110
1532
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1533
2111
1534
if command == 'getattr':
2112
1535
attrname = request[1]
2113
1536
if callable(client_object.__getattribute__(attrname)):
2114
1537
parent_pipe.send(('function',))
2115
1538
else:
2116
parent_pipe.send(('data', client_object
2117
.__getattribute__(attrname)))
1539
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2118
1540
2119
1541
if command == 'setattr':
2120
1542
attrname = request[1]
2121
1543
value = request[2]
2122
1544
setattr(client_object, attrname, value)
2123
1545
2124
1546
return True
2125
1547
2126
1548
2127
def rfc3339_duration_to_delta(duration):
2128
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2129
2130
>>> rfc3339_duration_to_delta("P7D")
2131
datetime.timedelta(7)
2132
>>> rfc3339_duration_to_delta("PT60S")
2133
datetime.timedelta(0, 60)
2134
>>> rfc3339_duration_to_delta("PT60M")
2135
datetime.timedelta(0, 3600)
2136
>>> rfc3339_duration_to_delta("PT24H")
2137
datetime.timedelta(1)
2138
>>> rfc3339_duration_to_delta("P1W")
2139
datetime.timedelta(7)
2140
>>> rfc3339_duration_to_delta("PT5M30S")
2141
datetime.timedelta(0, 330)
2142
>>> rfc3339_duration_to_delta("P1DT3M20S")
2143
datetime.timedelta(1, 200)
2144
"""
2145
2146
# Parsing an RFC 3339 duration with regular expressions is not
2147
# possible - there would have to be multiple places for the same
2148
# values, like seconds. The current code, while more esoteric, is
2149
# cleaner without depending on a parsing library. If Python had a
2150
# built-in library for parsing we would use it, but we'd like to
2151
# avoid excessive use of external libraries.
2152
2153
# New type for defining tokens, syntax, and semantics all-in-one
2154
Token = collections.namedtuple("Token",
2155
("regexp", # To match token; if
2156
# "value" is not None,
2157
# must have a "group"
2158
# containing digits
2159
"value", # datetime.timedelta or
2160
# None
2161
"followers")) # Tokens valid after
2162
# this token
2163
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2164
# the "duration" ABNF definition in RFC 3339, Appendix A.
2165
token_end = Token(re.compile(r"$"), None, frozenset())
2166
token_second = Token(re.compile(r"(\d+)S"),
2167
datetime.timedelta(seconds=1),
2168
frozenset((token_end,)))
2169
token_minute = Token(re.compile(r"(\d+)M"),
2170
datetime.timedelta(minutes=1),
2171
frozenset((token_second, token_end)))
2172
token_hour = Token(re.compile(r"(\d+)H"),
2173
datetime.timedelta(hours=1),
2174
frozenset((token_minute, token_end)))
2175
token_time = Token(re.compile(r"T"),
2176
None,
2177
frozenset((token_hour, token_minute,
2178
token_second)))
2179
token_day = Token(re.compile(r"(\d+)D"),
2180
datetime.timedelta(days=1),
2181
frozenset((token_time, token_end)))
2182
token_month = Token(re.compile(r"(\d+)M"),
2183
datetime.timedelta(weeks=4),
2184
frozenset((token_day, token_end)))
2185
token_year = Token(re.compile(r"(\d+)Y"),
2186
datetime.timedelta(weeks=52),
2187
frozenset((token_month, token_end)))
2188
token_week = Token(re.compile(r"(\d+)W"),
2189
datetime.timedelta(weeks=1),
2190
frozenset((token_end,)))
2191
token_duration = Token(re.compile(r"P"), None,
2192
frozenset((token_year, token_month,
2193
token_day, token_time,
2194
token_week)))
2195
# Define starting values
2196
value = datetime.timedelta() # Value so far
2197
found_token = None
2198
followers = frozenset((token_duration,)) # Following valid tokens
2199
s = duration # String left to parse
2200
# Loop until end token is found
2201
while found_token is not token_end:
2202
# Search for any currently valid tokens
2203
for token in followers:
2204
match = token.regexp.match(s)
2205
if match is not None:
2206
# Token found
2207
if token.value is not None:
2208
# Value found, parse digits
2209
factor = int(match.group(1), 10)
2210
# Add to value so far
2211
value += factor * token.value
2212
# Strip token from string
2213
s = token.regexp.sub("", s, 1)
2214
# Go to found token
2215
found_token = token
2216
# Set valid next tokens
2217
followers = found_token.followers
2218
break
2219
else:
2220
# No currently valid tokens were found
2221
raise ValueError("Invalid RFC 3339 duration")
2222
# End token found
2223
return value
2224
2225
2226
1549
def string_to_delta(interval):
2227
1550
"""Parse a string and return a datetime.timedelta
2228
1551
2229
>>> string_to_delta('7d')
1552
>>> string_to_delta(u'7d')
2230
1553
datetime.timedelta(7)
2231
>>> string_to_delta('60s')
1554
>>> string_to_delta(u'60s')
2232
1555
datetime.timedelta(0, 60)
2233
>>> string_to_delta('60m')
1556
>>> string_to_delta(u'60m')
2234
1557
datetime.timedelta(0, 3600)
2235
>>> string_to_delta('24h')
1558
>>> string_to_delta(u'24h')
2236
1559
datetime.timedelta(1)
2237
>>> string_to_delta('1w')
1560
>>> string_to_delta(u'1w')
2238
1561
datetime.timedelta(7)
2239
>>> string_to_delta('5m 30s')
1562
>>> string_to_delta(u'5m 30s')
2240
1563
datetime.timedelta(0, 330)
2241
1564
"""
2242
2243
try:
2244
return rfc3339_duration_to_delta(interval)
2245
except ValueError:
2246
pass
2247
2248
1565
timevalue = datetime.timedelta(0)
2249
1566
for s in interval.split():
2250
1567
try:
2251
suffix = s[-1]
1568
suffix = unicode(s[-1])
2252
1569
value = int(s[:-1])
2253
if suffix == "d":
1570
if suffix == u"d":
2254
1571
delta = datetime.timedelta(value)
2255
elif suffix == "s":
1572
elif suffix == u"s":
2256
1573
delta = datetime.timedelta(0, value)
2257
elif suffix == "m":
1574
elif suffix == u"m":
2258
1575
delta = datetime.timedelta(0, 0, 0, 0, value)
2259
elif suffix == "h":
1576
elif suffix == u"h":
2260
1577
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2261
elif suffix == "w":
1578
elif suffix == u"w":
2262
1579
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2263
1580
else:
2264
raise ValueError("Unknown suffix {!r}"
2265
.format(suffix))
2266
except IndexError as e:
2267
raise ValueError(*(e.args))
1581
raise ValueError(u"Unknown suffix %r" % suffix)
1582
except (ValueError, IndexError), e:
1583
raise ValueError(e.message)
2268
1584
timevalue += delta
2269
1585
return timevalue
2270
1586
2271
1587
1588
def if_nametoindex(interface):
1589
"""Call the C function if_nametoindex(), or equivalent
1590
1591
Note: This function cannot accept a unicode string."""
1592
global if_nametoindex
1593
try:
1594
if_nametoindex = (ctypes.cdll.LoadLibrary
1595
(ctypes.util.find_library(u"c"))
1596
.if_nametoindex)
1597
except (OSError, AttributeError):
1598
logger.warning(u"Doing if_nametoindex the hard way")
1599
def if_nametoindex(interface):
1600
"Get an interface index the hard way, i.e. using fcntl()"
1601
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1602
with contextlib.closing(socket.socket()) as s:
1603
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1604
struct.pack(str(u"16s16x"),
1605
interface))
1606
interface_index = struct.unpack(str(u"I"),
1607
ifreq[16:20])[0]
1608
return interface_index
1609
return if_nametoindex(interface)
1610
1611
2272
1612
def daemon(nochdir = False, noclose = False):
2273
1613
"""See daemon(3). Standard BSD Unix function.
2274
1614
2277
1617
sys.exit()
2278
1618
os.setsid()
2279
1619
if not nochdir:
2280
os.chdir("/")
1620
os.chdir(u"/")
2281
1621
if os.fork():
2282
1622
sys.exit()
2283
1623
if not noclose:
2284
1624
# Close all standard open file descriptors
2285
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1625
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2286
1626
if not stat.S_ISCHR(os.fstat(null).st_mode):
2287
raise OSError(errno.ENODEV, "{} not a character device"
2288
.format(os.devnull))
1627
raise OSError(errno.ENODEV,
1628
u"%s not a character device"
1629
% os.path.devnull)
2289
1630
os.dup2(null, sys.stdin.fileno())
2290
1631
os.dup2(null, sys.stdout.fileno())
2291
1632
os.dup2(null, sys.stderr.fileno())
2298
1639
##################################################################
2299
1640
# Parsing of options, both command line and config file
2300
1641
2301
parser = argparse.ArgumentParser()
2302
parser.add_argument("-v", "--version", action="version",
2303
version = "%(prog)s {}".format(version),
2304
help="show version number and exit")
2305
parser.add_argument("-i", "--interface", metavar="IF",
2306
help="Bind to interface IF")
2307
parser.add_argument("-a", "--address",
2308
help="Address to listen for requests on")
2309
parser.add_argument("-p", "--port", type=int,
2310
help="Port number to receive requests on")
2311
parser.add_argument("--check", action="store_true",
2312
help="Run self-test")
2313
parser.add_argument("--debug", action="store_true",
2314
help="Debug mode; run in foreground and log"
2315
" to terminal", default=None)
2316
parser.add_argument("--debuglevel", metavar="LEVEL",
2317
help="Debug level for stdout output")
2318
parser.add_argument("--priority", help="GnuTLS"
2319
" priority string (see GnuTLS documentation)")
2320
parser.add_argument("--servicename",
2321
metavar="NAME", help="Zeroconf service name")
2322
parser.add_argument("--configdir",
2323
default="/etc/mandos", metavar="DIR",
2324
help="Directory to search for configuration"
2325
" files")
2326
parser.add_argument("--no-dbus", action="store_false",
2327
dest="use_dbus", help="Do not provide D-Bus"
2328
" system bus interface", default=None)
2329
parser.add_argument("--no-ipv6", action="store_false",
2330
dest="use_ipv6", help="Do not use IPv6",
2331
default=None)
2332
parser.add_argument("--no-restore", action="store_false",
2333
dest="restore", help="Do not restore stored"
2334
" state", default=None)
2335
parser.add_argument("--socket", type=int,
2336
help="Specify a file descriptor to a network"
2337
" socket to use instead of creating one")
2338
parser.add_argument("--statedir", metavar="DIR",
2339
help="Directory to save/restore state in")
2340
parser.add_argument("--foreground", action="store_true",
2341
help="Run in foreground", default=None)
2342
parser.add_argument("--no-zeroconf", action="store_false",
2343
dest="zeroconf", help="Do not use Zeroconf",
2344
default=None)
2345
2346
options = parser.parse_args()
1642
parser = optparse.OptionParser(version = "%%prog %s" % version)
1643
parser.add_option("-i", u"--interface", type=u"string",
1644
metavar="IF", help=u"Bind to interface IF")
1645
parser.add_option("-a", u"--address", type=u"string",
1646
help=u"Address to listen for requests on")
1647
parser.add_option("-p", u"--port", type=u"int",
1648
help=u"Port number to receive requests on")
1649
parser.add_option("--check", action=u"store_true",
1650
help=u"Run self-test")
1651
parser.add_option("--debug", action=u"store_true",
1652
help=u"Debug mode; run in foreground and log to"
1653
u" terminal")
1654
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1655
help=u"Debug level for stdout output")
1656
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1657
u" priority string (see GnuTLS documentation)")
1658
parser.add_option("--servicename", type=u"string",
1659
metavar=u"NAME", help=u"Zeroconf service name")
1660
parser.add_option("--configdir", type=u"string",
1661
default=u"/etc/mandos", metavar=u"DIR",
1662
help=u"Directory to search for configuration"
1663
u" files")
1664
parser.add_option("--no-dbus", action=u"store_false",
1665
dest=u"use_dbus", help=u"Do not provide D-Bus"
1666
u" system bus interface")
1667
parser.add_option("--no-ipv6", action=u"store_false",
1668
dest=u"use_ipv6", help=u"Do not use IPv6")
1669
options = parser.parse_args()[0]
2347
1670
2348
1671
if options.check:
2349
1672
import doctest
2350
fail_count, test_count = doctest.testmod()
2351
sys.exit(os.EX_OK if fail_count == 0 else 1)
1673
doctest.testmod()
1674
sys.exit()
2352
1675
2353
1676
# Default values for config file for server-global settings
2354
server_defaults = { "interface": "",
2355
"address": "",
2356
"port": "",
2357
"debug": "False",
2358
"priority":
2359
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2360
":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2361
"servicename": "Mandos",
2362
"use_dbus": "True",
2363
"use_ipv6": "True",
2364
"debuglevel": "",
2365
"restore": "True",
2366
"socket": "",
2367
"statedir": "/var/lib/mandos",
2368
"foreground": "False",
2369
"zeroconf": "True",
1677
server_defaults = { u"interface": u"",
1678
u"address": u"",
1679
u"port": u"",
1680
u"debug": u"False",
1681
u"priority":
1682
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1683
u"servicename": u"Mandos",
1684
u"use_dbus": u"True",
1685
u"use_ipv6": u"True",
1686
u"debuglevel": u"",
2370
1687
}
2371
1688
2372
1689
# Parse config file for server-global settings
2373
1690
server_config = configparser.SafeConfigParser(server_defaults)
2374
1691
del server_defaults
2375
1692
server_config.read(os.path.join(options.configdir,
2376
"mandos.conf"))
1693
u"mandos.conf"))
2377
1694
# Convert the SafeConfigParser object to a dict
2378
1695
server_settings = server_config.defaults()
2379
1696
# Use the appropriate methods on the non-string config options
2380
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2381
server_settings[option] = server_config.getboolean("DEFAULT",
1697
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1698
server_settings[option] = server_config.getboolean(u"DEFAULT",
2382
1699
option)
2383
1700
if server_settings["port"]:
2384
server_settings["port"] = server_config.getint("DEFAULT",
2385
"port")
2386
if server_settings["socket"]:
2387
server_settings["socket"] = server_config.getint("DEFAULT",
2388
"socket")
2389
# Later, stdin will, and stdout and stderr might, be dup'ed
2390
# over with an opened os.devnull. But we don't want this to
2391
# happen with a supplied network socket.
2392
if 0 <= server_settings["socket"] <= 2:
2393
server_settings["socket"] = os.dup(server_settings
2394
["socket"])
1701
server_settings["port"] = server_config.getint(u"DEFAULT",
1702
u"port")
2395
1703
del server_config
2396
1704
2397
1705
# Override the settings from the config file with command line
2398
1706
# options, if set.
2399
for option in ("interface", "address", "port", "debug",
2400
"priority", "servicename", "configdir",
2401
"use_dbus", "use_ipv6", "debuglevel", "restore",
2402
"statedir", "socket", "foreground", "zeroconf"):
1707
for option in (u"interface", u"address", u"port", u"debug",
1708
u"priority", u"servicename", u"configdir",
1709
u"use_dbus", u"use_ipv6", u"debuglevel"):
2403
1710
value = getattr(options, option)
2404
1711
if value is not None:
2405
1712
server_settings[option] = value
2406
1713
del options
2407
1714
# Force all strings to be unicode
2408
1715
for option in server_settings.keys():
2409
if isinstance(server_settings[option], bytes):
2410
server_settings[option] = (server_settings[option]
2411
.decode("utf-8"))
2412
# Force all boolean options to be boolean
2413
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2414
"foreground", "zeroconf"):
2415
server_settings[option] = bool(server_settings[option])
2416
# Debug implies foreground
2417
if server_settings["debug"]:
2418
server_settings["foreground"] = True
1716
if type(server_settings[option]) is str:
1717
server_settings[option] = unicode(server_settings[option])
2419
1718
# Now we have our good server settings in "server_settings"
2420
1719
2421
1720
##################################################################
2422
1721
2423
if (not server_settings["zeroconf"] and
2424
not (server_settings["port"]
2425
or server_settings["socket"] != "")):
2426
parser.error("Needs port or socket to work without"
2427
" Zeroconf")
2428
2429
1722
# For convenience
2430
debug = server_settings["debug"]
2431
debuglevel = server_settings["debuglevel"]
2432
use_dbus = server_settings["use_dbus"]
2433
use_ipv6 = server_settings["use_ipv6"]
2434
stored_state_path = os.path.join(server_settings["statedir"],
2435
stored_state_file)
2436
foreground = server_settings["foreground"]
2437
zeroconf = server_settings["zeroconf"]
2438
2439
if debug:
2440
initlogger(debug, logging.DEBUG)
2441
else:
2442
if not debuglevel:
2443
initlogger(debug)
2444
else:
2445
level = getattr(logging, debuglevel.upper())
2446
initlogger(debug, level)
2447
2448
if server_settings["servicename"] != "Mandos":
1723
debug = server_settings[u"debug"]
1724
debuglevel = server_settings[u"debuglevel"]
1725
use_dbus = server_settings[u"use_dbus"]
1726
use_ipv6 = server_settings[u"use_ipv6"]
1727
1728
if server_settings[u"servicename"] != u"Mandos":
2449
1729
syslogger.setFormatter(logging.Formatter
2450
('Mandos ({}) [%(process)d]:'
2451
' %(levelname)s: %(message)s'
2452
.format(server_settings
2453
["servicename"])))
1730
(u'Mandos (%s) [%%(process)d]:'
1731
u' %%(levelname)s: %%(message)s'
1732
% server_settings[u"servicename"]))
2454
1733
2455
1734
# Parse config file with clients
2456
client_config = configparser.SafeConfigParser(Client
2457
.client_defaults)
2458
client_config.read(os.path.join(server_settings["configdir"],
2459
"clients.conf"))
1735
client_defaults = { u"timeout": u"1h",
1736
u"interval": u"5m",
1737
u"checker": u"fping -q -- %%(host)s",
1738
u"host": u"",
1739
u"approval_delay": u"0s",
1740
u"approval_duration": u"1s",
1741
}
1742
client_config = configparser.SafeConfigParser(client_defaults)
1743
client_config.read(os.path.join(server_settings[u"configdir"],
1744
u"clients.conf"))
2460
1745
2461
1746
global mandos_dbus_service
2462
1747
mandos_dbus_service = None
2463
1748
2464
socketfd = None
2465
if server_settings["socket"] != "":
2466
socketfd = server_settings["socket"]
2467
tcp_server = MandosServer((server_settings["address"],
2468
server_settings["port"]),
1749
tcp_server = MandosServer((server_settings[u"address"],
1750
server_settings[u"port"]),
2469
1751
ClientHandler,
2470
interface=(server_settings["interface"]
1752
interface=(server_settings[u"interface"]
2471
1753
or None),
2472
1754
use_ipv6=use_ipv6,
2473
1755
gnutls_priority=
2474
server_settings["priority"],
2475
use_dbus=use_dbus,
2476
socketfd=socketfd)
2477
if not foreground:
2478
pidfilename = "/run/mandos.pid"
2479
if not os.path.isdir("/run/."):
2480
pidfilename = "/var/run/mandos.pid"
2481
pidfile = None
2482
try:
2483
pidfile = open(pidfilename, "w")
2484
except IOError as e:
2485
logger.error("Could not open file %r", pidfilename,
2486
exc_info=e)
1756
server_settings[u"priority"],
1757
use_dbus=use_dbus)
1758
pidfilename = u"/var/run/mandos.pid"
1759
try:
1760
pidfile = open(pidfilename, u"w")
1761
except IOError:
1762
logger.error(u"Could not open file %r", pidfilename)
2487
1763
2488
for name in ("_mandos", "mandos", "nobody"):
1764
try:
1765
uid = pwd.getpwnam(u"_mandos").pw_uid
1766
gid = pwd.getpwnam(u"_mandos").pw_gid
1767
except KeyError:
2489
1768
try:
2490
uid = pwd.getpwnam(name).pw_uid
2491
gid = pwd.getpwnam(name).pw_gid
2492
break
1769
uid = pwd.getpwnam(u"mandos").pw_uid
1770
gid = pwd.getpwnam(u"mandos").pw_gid
2493
1771
except KeyError:
2494
continue
2495
else:
2496
uid = 65534
2497
gid = 65534
1772
try:
1773
uid = pwd.getpwnam(u"nobody").pw_uid
1774
gid = pwd.getpwnam(u"nobody").pw_gid
1775
except KeyError:
1776
uid = 65534
1777
gid = 65534
2498
1778
try:
2499
1779
os.setgid(gid)
2500
1780
os.setuid(uid)
2501
except OSError as error:
2502
if error.errno != errno.EPERM:
2503
raise
1781
except OSError, error:
1782
if error[0] != errno.EPERM:
1783
raise error
2504
1784
1785
if not debug and not debuglevel:
1786
syslogger.setLevel(logging.WARNING)
1787
console.setLevel(logging.WARNING)
1788
if debuglevel:
1789
level = getattr(logging, debuglevel.upper())
1790
syslogger.setLevel(level)
1791
console.setLevel(level)
1792
2505
1793
if debug:
2506
1794
# Enable all possible GnuTLS debugging
2507
1795
2511
1799
2512
1800
@gnutls.library.types.gnutls_log_func
2513
1801
def debug_gnutls(level, string):
2514
logger.debug("GnuTLS: %s", string[:-1])
1802
logger.debug(u"GnuTLS: %s", string[:-1])
2515
1803
2516
1804
(gnutls.library.functions
2517
1805
.gnutls_global_set_log_function(debug_gnutls))
2518
1806
2519
1807
# Redirect stdin so all checkers get /dev/null
2520
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1808
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2521
1809
os.dup2(null, sys.stdin.fileno())
2522
1810
if null > 2:
2523
1811
os.close(null)
2524
2525
# Need to fork before connecting to D-Bus
2526
if not foreground:
2527
# Close all input and output, do double fork, etc.
2528
daemon()
2529
2530
# multiprocessing will use threads, so before we use gobject we
2531
# need to inform gobject that threads will be used.
2532
gobject.threads_init()
1812
else:
1813
# No console logging
1814
logger.removeHandler(console)
1815
2533
1816
2534
1817
global main_loop
2535
1818
# From the Avahi example code
2536
DBusGMainLoop(set_as_default=True)
1819
DBusGMainLoop(set_as_default=True )
2537
1820
main_loop = gobject.MainLoop()
2538
1821
bus = dbus.SystemBus()
2539
1822
# End of Avahi example code
2540
1823
if use_dbus:
2541
1824
try:
2542
bus_name = dbus.service.BusName("se.recompile.Mandos",
1825
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2543
1826
bus, do_not_queue=True)
2544
old_bus_name = (dbus.service.BusName
2545
("se.bsnet.fukt.Mandos", bus,
2546
do_not_queue=True))
2547
except dbus.exceptions.NameExistsException as e:
2548
logger.error("Disabling D-Bus:", exc_info=e)
1827
except dbus.exceptions.NameExistsException, e:
1828
logger.error(unicode(e) + u", disabling D-Bus")
2549
1829
use_dbus = False
2550
server_settings["use_dbus"] = False
1830
server_settings[u"use_dbus"] = False
2551
1831
tcp_server.use_dbus = False
2552
if zeroconf:
2553
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2554
service = AvahiServiceToSyslog(name =
2555
server_settings["servicename"],
2556
servicetype = "_mandos._tcp",
2557
protocol = protocol, bus = bus)
2558
if server_settings["interface"]:
2559
service.interface = (if_nametoindex
2560
(server_settings["interface"]
2561
.encode("utf-8")))
2562
1832
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1833
service = AvahiService(name = server_settings[u"servicename"],
1834
servicetype = u"_mandos._tcp",
1835
protocol = protocol, bus = bus)
1836
if server_settings["interface"]:
1837
service.interface = (if_nametoindex
1838
(str(server_settings[u"interface"])))
1839
1840
if not debug:
1841
# Close all input and output, do double fork, etc.
1842
daemon()
1843
2563
1844
global multiprocessing_manager
2564
1845
multiprocessing_manager = multiprocessing.Manager()
2565
1846
2566
1847
client_class = Client
2567
1848
if use_dbus:
2568
1849
client_class = functools.partial(ClientDBus, bus = bus)
2569
2570
client_settings = Client.config_parser(client_config)
2571
old_client_settings = {}
2572
clients_data = {}
2573
2574
# This is used to redirect stdout and stderr for checker processes
2575
global wnull
2576
wnull = open(os.devnull, "w") # A writable /dev/null
2577
# Only used if server is running in foreground but not in debug
2578
# mode
2579
if debug or not foreground:
2580
wnull.close()
2581
2582
# Get client data and settings from last running state.
2583
if server_settings["restore"]:
2584
try:
2585
with open(stored_state_path, "rb") as stored_state:
2586
clients_data, old_client_settings = (pickle.load
2587
(stored_state))
2588
os.remove(stored_state_path)
2589
except IOError as e:
2590
if e.errno == errno.ENOENT:
2591
logger.warning("Could not load persistent state: {}"
2592
.format(os.strerror(e.errno)))
2593
else:
2594
logger.critical("Could not load persistent state:",
2595
exc_info=e)
2596
raise
2597
except EOFError as e:
2598
logger.warning("Could not load persistent state: "
2599
"EOFError:", exc_info=e)
2600
2601
with PGPEngine() as pgp:
2602
for client_name, client in clients_data.items():
2603
# Skip removed clients
2604
if client_name not in client_settings:
2605
continue
2606
2607
# Decide which value to use after restoring saved state.
2608
# We have three different values: Old config file,
2609
# new config file, and saved state.
2610
# New config value takes precedence if it differs from old
2611
# config value, otherwise use saved state.
2612
for name, value in client_settings[client_name].items():
2613
try:
2614
# For each value in new config, check if it
2615
# differs from the old config value (Except for
2616
# the "secret" attribute)
2617
if (name != "secret" and
2618
value != old_client_settings[client_name]
2619
[name]):
2620
client[name] = value
2621
except KeyError:
2622
pass
2623
2624
# Clients who has passed its expire date can still be
2625
# enabled if its last checker was successful. Clients
2626
# whose checker succeeded before we stored its state is
2627
# assumed to have successfully run all checkers during
2628
# downtime.
2629
if client["enabled"]:
2630
if datetime.datetime.utcnow() >= client["expires"]:
2631
if not client["last_checked_ok"]:
2632
logger.warning(
2633
"disabling client {} - Client never "
2634
"performed a successful checker"
2635
.format(client_name))
2636
client["enabled"] = False
2637
elif client["last_checker_status"] != 0:
2638
logger.warning(
2639
"disabling client {} - Client last"
2640
" checker failed with error code {}"
2641
.format(client_name,
2642
client["last_checker_status"]))
2643
client["enabled"] = False
2644
else:
2645
client["expires"] = (datetime.datetime
2646
.utcnow()
2647
+ client["timeout"])
2648
logger.debug("Last checker succeeded,"
2649
" keeping {} enabled"
2650
.format(client_name))
1850
def client_config_items(config, section):
1851
special_settings = {
1852
"approved_by_default":
1853
lambda: config.getboolean(section,
1854
"approved_by_default"),
1855
}
1856
for name, value in config.items(section):
2651
1857
try:
2652
client["secret"] = (
2653
pgp.decrypt(client["encrypted_secret"],
2654
client_settings[client_name]
2655
["secret"]))
2656
except PGPError:
2657
# If decryption fails, we use secret from new settings
2658
logger.debug("Failed to decrypt {} old secret"
2659
.format(client_name))
2660
client["secret"] = (
2661
client_settings[client_name]["secret"])
2662
2663
# Add/remove clients based on new changes made to config
2664
for client_name in (set(old_client_settings)
2665
- set(client_settings)):
2666
del clients_data[client_name]
2667
for client_name in (set(client_settings)
2668
- set(old_client_settings)):
2669
clients_data[client_name] = client_settings[client_name]
2670
2671
# Create all client objects
2672
for client_name, client in clients_data.items():
2673
tcp_server.clients[client_name] = client_class(
2674
name = client_name, settings = client,
2675
server_settings = server_settings)
2676
1858
yield (name, special_settings[name]())
1859
except KeyError:
1860
yield (name, value)
1861
1862
tcp_server.clients.update(set(
1863
client_class(name = section,
1864
config= dict(client_config_items(
1865
client_config, section)))
1866
for section in client_config.sections()))
2677
1867
if not tcp_server.clients:
2678
logger.warning("No clients defined")
2679
2680
if not foreground:
2681
if pidfile is not None:
2682
try:
2683
with pidfile:
2684
pid = os.getpid()
2685
pidfile.write("{}\n".format(pid).encode("utf-8"))
2686
except IOError:
2687
logger.error("Could not write to file %r with PID %d",
2688
pidfilename, pid)
1868
logger.warning(u"No clients defined")
1869
1870
try:
1871
with pidfile:
1872
pid = os.getpid()
1873
pidfile.write(str(pid) + "\n")
2689
1874
del pidfile
2690
del pidfilename
1875
except IOError:
1876
logger.error(u"Could not write to file %r with PID %d",
1877
pidfilename, pid)
1878
except NameError:
1879
# "pidfile" was never created
1880
pass
1881
del pidfilename
2691
1882
1883
if not debug:
1884
signal.signal(signal.SIGINT, signal.SIG_IGN)
2692
1885
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2693
1886
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2694
1887
2695
1888
if use_dbus:
2696
@alternate_dbus_interfaces({"se.recompile.Mandos":
2697
"se.bsnet.fukt.Mandos"})
2698
class MandosDBusService(DBusObjectWithProperties):
1889
class MandosDBusService(dbus.service.Object):
2699
1890
"""A D-Bus proxy object"""
2700
1891
def __init__(self):
2701
dbus.service.Object.__init__(self, bus, "/")
2702
_interface = "se.recompile.Mandos"
2703
2704
@dbus_interface_annotations(_interface)
2705
def _foo(self):
2706
return { "org.freedesktop.DBus.Property"
2707
".EmitsChangedSignal":
2708
"false"}
2709
2710
@dbus.service.signal(_interface, signature="o")
1892
dbus.service.Object.__init__(self, bus, u"/")
1893
_interface = u"se.bsnet.fukt.Mandos"
1894
1895
@dbus.service.signal(_interface, signature=u"o")
2711
1896
def ClientAdded(self, objpath):
2712
1897
"D-Bus signal"
2713
1898
pass
2714
1899
2715
@dbus.service.signal(_interface, signature="ss")
1900
@dbus.service.signal(_interface, signature=u"ss")
2716
1901
def ClientNotFound(self, fingerprint, address):
2717
1902
"D-Bus signal"
2718
1903
pass
2719
1904
2720
@dbus.service.signal(_interface, signature="os")
1905
@dbus.service.signal(_interface, signature=u"os")
2721
1906
def ClientRemoved(self, objpath, name):
2722
1907
"D-Bus signal"
2723
1908
pass
2724
1909
2725
@dbus.service.method(_interface, out_signature="ao")
1910
@dbus.service.method(_interface, out_signature=u"ao")
2726
1911
def GetAllClients(self):
2727
1912
"D-Bus method"
2728
1913
return dbus.Array(c.dbus_object_path
2729
for c in
2730
tcp_server.clients.itervalues())
1914
for c in tcp_server.clients)
2731
1915
2732
1916
@dbus.service.method(_interface,
2733
out_signature="a{oa{sv}}")
1917
out_signature=u"a{oa{sv}}")
2734
1918
def GetAllClientsWithProperties(self):
2735
1919
"D-Bus method"
2736
1920
return dbus.Dictionary(
2737
{ c.dbus_object_path: c.GetAll("")
2738
for c in tcp_server.clients.itervalues() },
2739
signature="oa{sv}")
1921
((c.dbus_object_path, c.GetAll(u""))
1922
for c in tcp_server.clients),
1923
signature=u"oa{sv}")
2740
1924
2741
@dbus.service.method(_interface, in_signature="o")
1925
@dbus.service.method(_interface, in_signature=u"o")
2742
1926
def RemoveClient(self, object_path):
2743
1927
"D-Bus method"
2744
for c in tcp_server.clients.itervalues():
1928
for c in tcp_server.clients:
2745
1929
if c.dbus_object_path == object_path:
2746
del tcp_server.clients[c.name]
1930
tcp_server.clients.remove(c)
2747
1931
c.remove_from_connection()
2748
1932
# Don't signal anything except ClientRemoved
2749
1933
c.disable(quiet=True)
2758
1942
2759
1943
def cleanup():
2760
1944
"Cleanup function; run on exit"
2761
if zeroconf:
2762
service.cleanup()
2763
2764
multiprocessing.active_children()
2765
wnull.close()
2766
if not (tcp_server.clients or client_settings):
2767
return
2768
2769
# Store client before exiting. Secrets are encrypted with key
2770
# based on what config file has. If config file is
2771
# removed/edited, old secret will thus be unrecovable.
2772
clients = {}
2773
with PGPEngine() as pgp:
2774
for client in tcp_server.clients.itervalues():
2775
key = client_settings[client.name]["secret"]
2776
client.encrypted_secret = pgp.encrypt(client.secret,
2777
key)
2778
client_dict = {}
2779
2780
# A list of attributes that can not be pickled
2781
# + secret.
2782
exclude = { "bus", "changedstate", "secret",
2783
"checker", "server_settings" }
2784
for name, typ in (inspect.getmembers
2785
(dbus.service.Object)):
2786
exclude.add(name)
2787
2788
client_dict["encrypted_secret"] = (client
2789
.encrypted_secret)
2790
for attr in client.client_structure:
2791
if attr not in exclude:
2792
client_dict[attr] = getattr(client, attr)
2793
2794
clients[client.name] = client_dict
2795
del client_settings[client.name]["secret"]
2796
2797
try:
2798
with (tempfile.NamedTemporaryFile
2799
(mode='wb', suffix=".pickle", prefix='clients-',
2800
dir=os.path.dirname(stored_state_path),
2801
delete=False)) as stored_state:
2802
pickle.dump((clients, client_settings), stored_state)
2803
tempname=stored_state.name
2804
os.rename(tempname, stored_state_path)
2805
except (IOError, OSError) as e:
2806
if not debug:
2807
try:
2808
os.remove(tempname)
2809
except NameError:
2810
pass
2811
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2812
logger.warning("Could not save persistent state: {}"
2813
.format(os.strerror(e.errno)))
2814
else:
2815
logger.warning("Could not save persistent state:",
2816
exc_info=e)
2817
raise
2818
2819
# Delete all clients, and settings from config
1945
service.cleanup()
1946
2820
1947
while tcp_server.clients:
2821
name, client = tcp_server.clients.popitem()
1948
client = tcp_server.clients.pop()
2822
1949
if use_dbus:
2823
1950
client.remove_from_connection()
1951
client.disable_hook = None
2824
1952
# Don't signal anything except ClientRemoved
2825
1953
client.disable(quiet=True)
2826
1954
if use_dbus:
2827
1955
# Emit D-Bus signal
2828
mandos_dbus_service.ClientRemoved(client
2829
.dbus_object_path,
1956
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2830
1957
client.name)
2831
client_settings.clear()
2832
1958
2833
1959
atexit.register(cleanup)
2834
1960
2835
for client in tcp_server.clients.itervalues():
1961
for client in tcp_server.clients:
2836
1962
if use_dbus:
2837
1963
# Emit D-Bus signal
2838
1964
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2839
# Need to initiate checking of clients
2840
if client.enabled:
2841
client.init_checker()
1965
client.enable()
2842
1966
2843
1967
tcp_server.enable()
2844
1968
tcp_server.server_activate()
2845
1969
2846
1970
# Find out what port we got
2847
if zeroconf:
2848
service.port = tcp_server.socket.getsockname()[1]
1971
service.port = tcp_server.socket.getsockname()[1]
2849
1972
if use_ipv6:
2850
logger.info("Now listening on address %r, port %d,"
2851
" flowinfo %d, scope_id %d",
2852
*tcp_server.socket.getsockname())
1973
logger.info(u"Now listening on address %r, port %d,"
1974
" flowinfo %d, scope_id %d"
1975
% tcp_server.socket.getsockname())
2853
1976
else: # IPv4
2854
logger.info("Now listening on address %r, port %d",
2855
*tcp_server.socket.getsockname())
1977
logger.info(u"Now listening on address %r, port %d"
1978
% tcp_server.socket.getsockname())
2856
1979
2857
1980
#service.interface = tcp_server.socket.getsockname()[3]
2858
1981
2859
1982
try:
2860
if zeroconf:
2861
# From the Avahi example code
2862
try:
2863
service.activate()
2864
except dbus.exceptions.DBusException as error:
2865
logger.critical("D-Bus Exception", exc_info=error)
2866
cleanup()
2867
sys.exit(1)
2868
# End of Avahi example code
1983
# From the Avahi example code
1984
try:
1985
service.activate()
1986
except dbus.exceptions.DBusException, error:
1987
logger.critical(u"DBusException: %s", error)
1988
cleanup()
1989
sys.exit(1)
1990
# End of Avahi example code
2869
1991
2870
1992
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2871
1993
lambda *args, **kwargs:
2872
1994
(tcp_server.handle_request
2873
1995
(*args[2:], **kwargs) or True))
2874
1996
2875
logger.debug("Starting main loop")
1997
logger.debug(u"Starting main loop")
2876
1998
main_loop.run()
2877
except AvahiError as error:
2878
logger.critical("Avahi Error", exc_info=error)
1999
except AvahiError, error:
2000
logger.critical(u"AvahiError: %s", error)
2879
2001
cleanup()
2880
2002
sys.exit(1)
2881
2003
except KeyboardInterrupt:
2882
2004
if debug:
2883
print("", file=sys.stderr)
2884
logger.debug("Server received KeyboardInterrupt")
2885
logger.debug("Server exiting")
2005
print >> sys.stderr
2006
logger.debug(u"Server received KeyboardInterrupt")
2007
logger.debug(u"Server exiting")
2886
2008
# Must run before the D-Bus bus name gets deregistered
2887
2009
cleanup()
2888
2010
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0