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- Committer: Teddy Hogeborn
- Date: 2009-09-22 12:48:07 UTC
- mto: (24.1.146 mandos) (237.12.2 mandos-persistent) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 270.
- Revision ID: teddy@fukt.bsnet.se-20090922124807-i2cr0zv4vxjv38g4
* mandos-ctl: Made work again after D-Bus API changes.
(datetime_to_milliseconds): Renamed to "timedelta_to_milliseconds".
All callers changed.
(milliseconds_to_string): Use clearer mapping string format.
(string_to_delta): Add some comments.
(datetime_to_milliseconds): Renamed to "timedelta_to_milliseconds".
All callers changed.
(milliseconds_to_string): Use clearer mapping string format.
(string_to_delta): Add some comments.
- files removed:
- DBUS-API
- debian/source
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
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12
#
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# Everything else is
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# Copyright © 2008-2013 Teddy Hogeborn
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# Copyright © 2008-2013 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 logging
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import logging.handlers
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import pwd
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import contextlib
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from contextlib import closing
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import struct
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import fcntl
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import functools
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import cPickle as pickle
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import multiprocessing
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import types
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import binascii
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import tempfile
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import itertools
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import collections
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import dbus
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import dbus.service
88
78
except ImportError:
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SO_BINDTODEVICE = None
90
80
91
version = "1.6.2"
92
stored_state_file = "clients.pickle"
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logger = logging.getLogger()
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version = "1.0.12"
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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 = str("/dev/log")))
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try:
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
103
except (OSError, AttributeError):
104
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(str("16s16x"),
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interface))
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interface_index = struct.unpack(str("I"),
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ifreq[16:20])[0]
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return interface_index
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115
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def initlogger(debug, level=logging.WARNING):
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"""init logger and add loglevel"""
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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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133
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class PGPError(Exception):
135
"""Exception if encryption/decryption fails"""
136
pass
137
138
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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):
142
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
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self.gnupgargs = ['--batch',
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'--home', self.tempdir,
145
'--force-mdc',
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'--quiet',
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'--no-use-agent']
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def __enter__(self):
150
return self
151
152
def __exit__(self, exc_type, exc_value, traceback):
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self._cleanup()
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return False
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def __del__(self):
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self._cleanup()
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def _cleanup(self):
160
if self.tempdir is not None:
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# Delete contents of tempdir
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for root, dirs, files in os.walk(self.tempdir,
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topdown = False):
164
for filename in files:
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os.remove(os.path.join(root, filename))
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for dirname in dirs:
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os.rmdir(os.path.join(root, dirname))
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# Remove tempdir
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os.rmdir(self.tempdir)
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self.tempdir = None
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172
def password_encode(self, password):
173
# Passphrase can not be empty and can not contain newlines or
174
# NUL bytes. So we prefix it and hex encode it.
175
encoded = b"mandos" + binascii.hexlify(password)
176
if len(encoded) > 2048:
177
# GnuPG can't handle long passwords, so encode differently
178
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
179
.replace(b"\n", b"\\n")
180
.replace(b"\0", b"\\x00"))
181
return encoded
182
183
def encrypt(self, data, password):
184
passphrase = self.password_encode(password)
185
with tempfile.NamedTemporaryFile(dir=self.tempdir
186
) as passfile:
187
passfile.write(passphrase)
188
passfile.flush()
189
proc = subprocess.Popen(['gpg', '--symmetric',
190
'--passphrase-file',
191
passfile.name]
192
+ self.gnupgargs,
193
stdin = subprocess.PIPE,
194
stdout = subprocess.PIPE,
195
stderr = subprocess.PIPE)
196
ciphertext, err = proc.communicate(input = data)
197
if proc.returncode != 0:
198
raise PGPError(err)
199
return ciphertext
200
201
def decrypt(self, data, password):
202
passphrase = self.password_encode(password)
203
with tempfile.NamedTemporaryFile(dir = self.tempdir
204
) as passfile:
205
passfile.write(passphrase)
206
passfile.flush()
207
proc = subprocess.Popen(['gpg', '--decrypt',
208
'--passphrase-file',
209
passfile.name]
210
+ self.gnupgargs,
211
stdin = subprocess.PIPE,
212
stdout = subprocess.PIPE,
213
stderr = subprocess.PIPE)
214
decrypted_plaintext, err = proc.communicate(input
215
= data)
216
if proc.returncode != 0:
217
raise PGPError(err)
218
return decrypted_plaintext
219
87
address = "/dev/log"))
88
syslogger.setFormatter(logging.Formatter
89
(u'Mandos [%(process)d]: %(levelname)s:'
90
u' %(message)s'))
91
logger.addHandler(syslogger)
92
93
console = logging.StreamHandler()
94
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
95
u' %(levelname)s:'
96
u' %(message)s'))
97
logger.addHandler(console)
220
98
221
99
class AvahiError(Exception):
222
100
def __init__(self, value, *args, **kwargs):
238
116
Attributes:
239
117
interface: integer; avahi.IF_UNSPEC or an interface index.
240
118
Used to optionally bind to the specified interface.
241
name: string; Example: 'Mandos'
242
type: string; Example: '_mandos._tcp'.
243
See <https://www.iana.org/assignments/service-names-port-numbers>
119
name: string; Example: u'Mandos'
120
type: string; Example: u'_mandos._tcp'.
121
See <http://www.dns-sd.org/ServiceTypes.html>
244
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port: integer; what port to announce
245
123
TXT: list of strings; TXT record for the service
246
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domain: string; Domain to publish on, default to .local if empty.
252
130
server: D-Bus Server
253
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bus: dbus.SystemBus()
254
132
"""
255
256
133
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
257
134
servicetype = None, port = None, TXT = None,
258
domain = "", host = "", max_renames = 32768,
135
domain = u"", host = u"", max_renames = 32768,
259
136
protocol = avahi.PROTO_UNSPEC, bus = None):
260
137
self.interface = interface
261
138
self.name = name
270
147
self.group = None # our entry group
271
148
self.server = None
272
149
self.bus = bus
273
self.entry_group_state_changed_match = None
274
275
150
def rename(self):
276
151
"""Derived from the Avahi example code"""
277
152
if self.rename_count >= self.max_renames:
278
logger.critical("No suitable Zeroconf service name found"
279
" after %i retries, exiting.",
153
logger.critical(u"No suitable Zeroconf service name found"
154
u" after %i retries, exiting.",
280
155
self.rename_count)
281
raise AvahiServiceError("Too many renames")
282
self.name = unicode(self.server
283
.GetAlternativeServiceName(self.name))
284
logger.info("Changing Zeroconf service name to %r ...",
285
self.name)
156
raise AvahiServiceError(u"Too many renames")
157
self.name = self.server.GetAlternativeServiceName(self.name)
158
logger.info(u"Changing Zeroconf service name to %r ...",
159
unicode(self.name))
160
syslogger.setFormatter(logging.Formatter
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
163
% self.name))
286
164
self.remove()
287
try:
288
self.add()
289
except dbus.exceptions.DBusException as error:
290
logger.critical("D-Bus Exception", exc_info=error)
291
self.cleanup()
292
os._exit(1)
165
self.add()
293
166
self.rename_count += 1
294
295
167
def remove(self):
296
168
"""Derived from the Avahi example code"""
297
if self.entry_group_state_changed_match is not None:
298
self.entry_group_state_changed_match.remove()
299
self.entry_group_state_changed_match = None
300
169
if self.group is not None:
301
170
self.group.Reset()
302
303
171
def add(self):
304
172
"""Derived from the Avahi example code"""
305
self.remove()
306
173
if self.group is None:
307
174
self.group = dbus.Interface(
308
175
self.bus.get_object(avahi.DBUS_NAME,
309
176
self.server.EntryGroupNew()),
310
177
avahi.DBUS_INTERFACE_ENTRY_GROUP)
311
self.entry_group_state_changed_match = (
312
self.group.connect_to_signal(
313
'StateChanged', self.entry_group_state_changed))
314
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
178
self.group.connect_to_signal('StateChanged',
179
self
180
.entry_group_state_changed)
181
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
315
182
self.name, self.type)
316
183
self.group.AddService(
317
184
self.interface,
322
189
dbus.UInt16(self.port),
323
190
avahi.string_array_to_txt_array(self.TXT))
324
191
self.group.Commit()
325
326
192
def entry_group_state_changed(self, state, error):
327
193
"""Derived from the Avahi example code"""
328
logger.debug("Avahi entry group state change: %i", state)
194
logger.debug(u"Avahi state change: %i", state)
329
195
330
196
if state == avahi.ENTRY_GROUP_ESTABLISHED:
331
logger.debug("Zeroconf service established.")
197
logger.debug(u"Zeroconf service established.")
332
198
elif state == avahi.ENTRY_GROUP_COLLISION:
333
logger.info("Zeroconf service name collision.")
199
logger.warning(u"Zeroconf service name collision.")
334
200
self.rename()
335
201
elif state == avahi.ENTRY_GROUP_FAILURE:
336
logger.critical("Avahi: Error in group state changed %s",
202
logger.critical(u"Avahi: Error in group state changed %s",
337
203
unicode(error))
338
raise AvahiGroupError("State changed: {0!s}"
339
.format(error))
340
204
raise AvahiGroupError(u"State changed: %s"
205
% unicode(error))
341
206
def cleanup(self):
342
207
"""Derived from the Avahi example code"""
343
208
if self.group is not None:
344
try:
345
self.group.Free()
346
except (dbus.exceptions.UnknownMethodException,
347
dbus.exceptions.DBusException):
348
pass
209
self.group.Free()
349
210
self.group = None
350
self.remove()
351
352
def server_state_changed(self, state, error=None):
211
def server_state_changed(self, state):
353
212
"""Derived from the Avahi example code"""
354
logger.debug("Avahi server state change: %i", state)
355
bad_states = { avahi.SERVER_INVALID:
356
"Zeroconf server invalid",
357
avahi.SERVER_REGISTERING: None,
358
avahi.SERVER_COLLISION:
359
"Zeroconf server name collision",
360
avahi.SERVER_FAILURE:
361
"Zeroconf server failure" }
362
if state in bad_states:
363
if bad_states[state] is not None:
364
if error is None:
365
logger.error(bad_states[state])
366
else:
367
logger.error(bad_states[state] + ": %r", error)
368
self.cleanup()
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
215
self.remove()
369
216
elif state == avahi.SERVER_RUNNING:
370
217
self.add()
371
else:
372
if error is None:
373
logger.debug("Unknown state: %r", state)
374
else:
375
logger.debug("Unknown state: %r: %r", state, error)
376
377
218
def activate(self):
378
219
"""Derived from the Avahi example code"""
379
220
if self.server is None:
380
221
self.server = dbus.Interface(
381
222
self.bus.get_object(avahi.DBUS_NAME,
382
avahi.DBUS_PATH_SERVER,
383
follow_name_owner_changes=True),
223
avahi.DBUS_PATH_SERVER),
384
224
avahi.DBUS_INTERFACE_SERVER)
385
self.server.connect_to_signal("StateChanged",
225
self.server.connect_to_signal(u"StateChanged",
386
226
self.server_state_changed)
387
227
self.server_state_changed(self.server.GetState())
388
228
389
229
390
class AvahiServiceToSyslog(AvahiService):
391
def rename(self):
392
"""Add the new name to the syslog messages"""
393
ret = AvahiService.rename(self)
394
syslogger.setFormatter(logging.Formatter
395
('Mandos ({0}) [%(process)d]:'
396
' %(levelname)s: %(message)s'
397
.format(self.name)))
398
return ret
399
400
401
def timedelta_to_milliseconds(td):
402
"Convert a datetime.timedelta() to milliseconds"
403
return ((td.days * 24 * 60 * 60 * 1000)
404
+ (td.seconds * 1000)
405
+ (td.microseconds // 1000))
406
407
408
230
class Client(object):
409
231
"""A representation of a client host served by this server.
410
232
411
233
Attributes:
412
approved: bool(); 'None' if not yet approved/disapproved
413
approval_delay: datetime.timedelta(); Time to wait for approval
414
approval_duration: datetime.timedelta(); Duration of one approval
234
name: string; from the config file, used in log messages and
235
D-Bus identifiers
236
fingerprint: string (40 or 32 hexadecimal digits); used to
237
uniquely identify the client
238
secret: bytestring; sent verbatim (over TLS) to client
239
host: string; available for use by the checker command
240
created: datetime.datetime(); (UTC) object creation
241
last_enabled: datetime.datetime(); (UTC)
242
enabled: bool()
243
last_checked_ok: datetime.datetime(); (UTC) or None
244
timeout: datetime.timedelta(); How long from last_checked_ok
245
until this client is invalid
246
interval: datetime.timedelta(); How often to start a new checker
247
disable_hook: If set, called by disable() as disable_hook(self)
415
248
checker: subprocess.Popen(); a running checker process used
416
249
to see if the client lives.
417
250
'None' if no process is running.
418
checker_callback_tag: a gobject event source tag, or None
419
checker_command: string; External command which is run to check
420
if client lives. %() expansions are done at
251
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
253
checker_callback_tag: - '' -
254
checker_command: string; External command which is run to check if
255
client lives. %() expansions are done at
421
256
runtime with vars(self) as dict, so that for
422
257
instance %(name)s can be used in the command.
423
checker_initiator_tag: a gobject event source tag, or None
424
created: datetime.datetime(); (UTC) object creation
425
client_structure: Object describing what attributes a client has
426
and is used for storing the client at exit
427
258
current_checker_command: string; current running checker_command
428
disable_initiator_tag: a gobject event source tag, or None
429
enabled: bool()
430
fingerprint: string (40 or 32 hexadecimal digits); used to
431
uniquely identify the client
432
host: string; available for use by the checker command
433
interval: datetime.timedelta(); How often to start a new checker
434
last_approval_request: datetime.datetime(); (UTC) or None
435
last_checked_ok: datetime.datetime(); (UTC) or None
436
last_checker_status: integer between 0 and 255 reflecting exit
437
status of last checker. -1 reflects crashed
438
checker, -2 means no checker completed yet.
439
last_enabled: datetime.datetime(); (UTC) or None
440
name: string; from the config file, used in log messages and
441
D-Bus identifiers
442
secret: bytestring; sent verbatim (over TLS) to client
443
timeout: datetime.timedelta(); How long from last_checked_ok
444
until this client is disabled
445
extended_timeout: extra long timeout when secret has been sent
446
runtime_expansions: Allowed attributes for runtime expansion.
447
expires: datetime.datetime(); time (UTC) when a client will be
448
disabled, or None
449
server_settings: The server_settings dict from main()
450
259
"""
451
260
452
runtime_expansions = ("approval_delay", "approval_duration",
453
"created", "enabled", "expires",
454
"fingerprint", "host", "interval",
455
"last_approval_request", "last_checked_ok",
456
"last_enabled", "name", "timeout")
457
client_defaults = { "timeout": "PT5M",
458
"extended_timeout": "PT15M",
459
"interval": "PT2M",
460
"checker": "fping -q -- %%(host)s",
461
"host": "",
462
"approval_delay": "PT0S",
463
"approval_duration": "PT1S",
464
"approved_by_default": "True",
465
"enabled": "True",
466
}
261
@staticmethod
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
467
267
468
268
def timeout_milliseconds(self):
469
269
"Return the 'timeout' attribute in milliseconds"
470
return timedelta_to_milliseconds(self.timeout)
471
472
def extended_timeout_milliseconds(self):
473
"Return the 'extended_timeout' attribute in milliseconds"
474
return timedelta_to_milliseconds(self.extended_timeout)
270
return self._timedelta_to_milliseconds(self.timeout)
475
271
476
272
def interval_milliseconds(self):
477
273
"Return the 'interval' attribute in milliseconds"
478
return timedelta_to_milliseconds(self.interval)
479
480
def approval_delay_milliseconds(self):
481
return timedelta_to_milliseconds(self.approval_delay)
482
483
@staticmethod
484
def config_parser(config):
485
"""Construct a new dict of client settings of this form:
486
{ client_name: {setting_name: value, ...}, ...}
487
with exceptions for any special settings as defined above.
488
NOTE: Must be a pure function. Must return the same result
489
value given the same arguments.
490
"""
491
settings = {}
492
for client_name in config.sections():
493
section = dict(config.items(client_name))
494
client = settings[client_name] = {}
495
496
client["host"] = section["host"]
497
# Reformat values from string types to Python types
498
client["approved_by_default"] = config.getboolean(
499
client_name, "approved_by_default")
500
client["enabled"] = config.getboolean(client_name,
501
"enabled")
502
503
client["fingerprint"] = (section["fingerprint"].upper()
504
.replace(" ", ""))
505
if "secret" in section:
506
client["secret"] = section["secret"].decode("base64")
507
elif "secfile" in section:
508
with open(os.path.expanduser(os.path.expandvars
509
(section["secfile"])),
510
"rb") as secfile:
511
client["secret"] = secfile.read()
512
else:
513
raise TypeError("No secret or secfile for section {0}"
514
.format(section))
515
client["timeout"] = string_to_delta(section["timeout"])
516
client["extended_timeout"] = string_to_delta(
517
section["extended_timeout"])
518
client["interval"] = string_to_delta(section["interval"])
519
client["approval_delay"] = string_to_delta(
520
section["approval_delay"])
521
client["approval_duration"] = string_to_delta(
522
section["approval_duration"])
523
client["checker_command"] = section["checker"]
524
client["last_approval_request"] = None
525
client["last_checked_ok"] = None
526
client["last_checker_status"] = -2
527
528
return settings
529
530
def __init__(self, settings, name = None, server_settings=None):
274
return self._timedelta_to_milliseconds(self.interval)
275
276
def __init__(self, name = None, disable_hook=None, config=None):
277
"""Note: the 'checker' key in 'config' sets the
278
'checker_command' attribute and *not* the 'checker'
279
attribute."""
531
280
self.name = name
532
if server_settings is None:
533
server_settings = {}
534
self.server_settings = server_settings
535
# adding all client settings
536
for setting, value in settings.iteritems():
537
setattr(self, setting, value)
538
539
if self.enabled:
540
if not hasattr(self, "last_enabled"):
541
self.last_enabled = datetime.datetime.utcnow()
542
if not hasattr(self, "expires"):
543
self.expires = (datetime.datetime.utcnow()
544
+ self.timeout)
545
else:
546
self.last_enabled = None
547
self.expires = None
548
549
logger.debug("Creating client %r", self.name)
281
if config is None:
282
config = {}
283
logger.debug(u"Creating client %r", self.name)
550
284
# Uppercase and remove spaces from fingerprint for later
551
285
# comparison purposes with return value from the fingerprint()
552
286
# function
553
logger.debug(" Fingerprint: %s", self.fingerprint)
554
self.created = settings.get("created",
555
datetime.datetime.utcnow())
556
557
# attributes specific for this server instance
287
self.fingerprint = (config[u"fingerprint"].upper()
288
.replace(u" ", u""))
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
294
(os.path.expandvars
295
(config[u"secfile"])))) as secfile:
296
self.secret = secfile.read()
297
else:
298
raise TypeError(u"No secret or secfile for client %s"
299
% self.name)
300
self.host = config.get(u"host", u"")
301
self.created = datetime.datetime.utcnow()
302
self.enabled = False
303
self.last_enabled = None
304
self.last_checked_ok = None
305
self.timeout = string_to_delta(config[u"timeout"])
306
self.interval = string_to_delta(config[u"interval"])
307
self.disable_hook = disable_hook
558
308
self.checker = None
559
309
self.checker_initiator_tag = None
560
310
self.disable_initiator_tag = None
561
311
self.checker_callback_tag = None
312
self.checker_command = config[u"checker"]
562
313
self.current_checker_command = None
563
self.approved = None
564
self.approvals_pending = 0
565
self.changedstate = (multiprocessing_manager
566
.Condition(multiprocessing_manager
567
.Lock()))
568
self.client_structure = [attr for attr in
569
self.__dict__.iterkeys()
570
if not attr.startswith("_")]
571
self.client_structure.append("client_structure")
572
573
for name, t in inspect.getmembers(type(self),
574
lambda obj:
575
isinstance(obj,
576
property)):
577
if not name.startswith("_"):
578
self.client_structure.append(name)
579
580
# Send notice to process children that client state has changed
581
def send_changedstate(self):
582
with self.changedstate:
583
self.changedstate.notify_all()
314
self.last_connect = None
584
315
585
316
def enable(self):
586
317
"""Start this client's checker and timeout hooks"""
587
if getattr(self, "enabled", False):
318
if getattr(self, u"enabled", False):
588
319
# Already enabled
589
320
return
590
self.expires = datetime.datetime.utcnow() + self.timeout
591
self.enabled = True
592
321
self.last_enabled = datetime.datetime.utcnow()
593
self.init_checker()
594
self.send_changedstate()
595
596
def disable(self, quiet=True):
597
"""Disable this client."""
598
if not getattr(self, "enabled", False):
599
return False
600
if not quiet:
601
logger.info("Disabling client %s", self.name)
602
if getattr(self, "disable_initiator_tag", None) is not None:
603
gobject.source_remove(self.disable_initiator_tag)
604
self.disable_initiator_tag = None
605
self.expires = None
606
if getattr(self, "checker_initiator_tag", None) is not None:
607
gobject.source_remove(self.checker_initiator_tag)
608
self.checker_initiator_tag = None
609
self.stop_checker()
610
self.enabled = False
611
if not quiet:
612
self.send_changedstate()
613
# Do not run this again if called by a gobject.timeout_add
614
return False
615
616
def __del__(self):
617
self.disable()
618
619
def init_checker(self):
620
322
# Schedule a new checker to be started an 'interval' from now,
621
323
# and every interval from then on.
622
if self.checker_initiator_tag is not None:
623
gobject.source_remove(self.checker_initiator_tag)
624
324
self.checker_initiator_tag = (gobject.timeout_add
625
325
(self.interval_milliseconds(),
626
326
self.start_checker))
327
# Also start a new checker *right now*.
328
self.start_checker()
627
329
# Schedule a disable() when 'timeout' has passed
628
if self.disable_initiator_tag is not None:
629
gobject.source_remove(self.disable_initiator_tag)
630
330
self.disable_initiator_tag = (gobject.timeout_add
631
331
(self.timeout_milliseconds(),
632
332
self.disable))
633
# Also start a new checker *right now*.
634
self.start_checker()
333
self.enabled = True
334
335
def disable(self):
336
"""Disable this client."""
337
if not getattr(self, "enabled", False):
338
return False
339
logger.info(u"Disabling client %s", self.name)
340
if getattr(self, u"disable_initiator_tag", False):
341
gobject.source_remove(self.disable_initiator_tag)
342
self.disable_initiator_tag = None
343
if getattr(self, u"checker_initiator_tag", False):
344
gobject.source_remove(self.checker_initiator_tag)
345
self.checker_initiator_tag = None
346
self.stop_checker()
347
if self.disable_hook:
348
self.disable_hook(self)
349
self.enabled = False
350
# Do not run this again if called by a gobject.timeout_add
351
return False
352
353
def __del__(self):
354
self.disable_hook = None
355
self.disable()
635
356
636
357
def checker_callback(self, pid, condition, command):
637
358
"""The checker has completed, so take appropriate actions."""
638
359
self.checker_callback_tag = None
639
360
self.checker = None
640
361
if os.WIFEXITED(condition):
641
self.last_checker_status = os.WEXITSTATUS(condition)
642
if self.last_checker_status == 0:
643
logger.info("Checker for %(name)s succeeded",
362
exitstatus = os.WEXITSTATUS(condition)
363
if exitstatus == 0:
364
logger.info(u"Checker for %(name)s succeeded",
644
365
vars(self))
645
366
self.checked_ok()
646
367
else:
647
logger.info("Checker for %(name)s failed",
368
logger.info(u"Checker for %(name)s failed",
648
369
vars(self))
649
370
else:
650
self.last_checker_status = -1
651
logger.warning("Checker for %(name)s crashed?",
371
logger.warning(u"Checker for %(name)s crashed?",
652
372
vars(self))
653
373
654
374
def checked_ok(self):
655
"""Assert that the client has been seen, alive and well."""
375
"""Bump up the timeout for this client.
376
377
This should only be called when the client has been seen,
378
alive and well.
379
"""
656
380
self.last_checked_ok = datetime.datetime.utcnow()
657
self.last_checker_status = 0
658
self.bump_timeout()
659
660
def bump_timeout(self, timeout=None):
661
"""Bump up the timeout for this client."""
662
if timeout is None:
663
timeout = self.timeout
664
if self.disable_initiator_tag is not None:
665
gobject.source_remove(self.disable_initiator_tag)
666
self.disable_initiator_tag = None
667
if getattr(self, "enabled", False):
668
self.disable_initiator_tag = (gobject.timeout_add
669
(timedelta_to_milliseconds
670
(timeout), self.disable))
671
self.expires = datetime.datetime.utcnow() + timeout
672
673
def need_approval(self):
674
self.last_approval_request = datetime.datetime.utcnow()
381
gobject.source_remove(self.disable_initiator_tag)
382
self.disable_initiator_tag = (gobject.timeout_add
383
(self.timeout_milliseconds(),
384
self.disable))
675
385
676
386
def start_checker(self):
677
387
"""Start a new checker subprocess if one is not running.
679
389
If a checker already exists, leave it running and do
680
390
nothing."""
681
391
# The reason for not killing a running checker is that if we
682
# did that, and if a checker (for some reason) started running
683
# slowly and taking more than 'interval' time, then the client
684
# would inevitably timeout, since no checker would get a
685
# chance to run to completion. If we instead leave running
392
# did that, then if a checker (for some reason) started
393
# running slowly and taking more than 'interval' time, the
394
# client would inevitably timeout, since no checker would get
395
# a chance to run to completion. If we instead leave running
686
396
# checkers alone, the checker would have to take more time
687
# than 'timeout' for the client to be disabled, which is as it
688
# should be.
397
# than 'timeout' for the client to be declared invalid, which
398
# is as it should be.
689
399
690
400
# If a checker exists, make sure it is not a zombie
691
try:
401
if self.checker is not None:
692
402
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
693
except AttributeError:
694
pass
695
except OSError as error:
696
if error.errno != errno.ECHILD:
697
raise
698
else:
699
403
if pid:
700
logger.warning("Checker was a zombie")
404
logger.warning(u"Checker was a zombie")
701
405
gobject.source_remove(self.checker_callback_tag)
702
406
self.checker_callback(pid, status,
703
407
self.current_checker_command)
704
408
# Start a new checker if needed
705
409
if self.checker is None:
706
# Escape attributes for the shell
707
escaped_attrs = dict(
708
(attr, re.escape(unicode(getattr(self, attr))))
709
for attr in
710
self.runtime_expansions)
711
410
try:
712
command = self.checker_command % escaped_attrs
713
except TypeError as error:
714
logger.error('Could not format string "%s"',
715
self.checker_command, exc_info=error)
716
return True # Try again later
411
# In case checker_command has exactly one % operator
412
command = self.checker_command % self.host
413
except TypeError:
414
# Escape attributes for the shell
415
escaped_attrs = dict((key,
416
re.escape(unicode(str(val),
417
errors=
418
u'replace')))
419
for key, val in
420
vars(self).iteritems())
421
try:
422
command = self.checker_command % escaped_attrs
423
except TypeError, error:
424
logger.error(u'Could not format string "%s":'
425
u' %s', self.checker_command, error)
426
return True # Try again later
717
427
self.current_checker_command = command
718
428
try:
719
logger.info("Starting checker %r for %s",
429
logger.info(u"Starting checker %r for %s",
720
430
command, self.name)
721
431
# We don't need to redirect stdout and stderr, since
722
432
# in normal mode, that is already done by daemon(),
723
433
# and in debug mode we don't want to. (Stdin is
724
434
# always replaced by /dev/null.)
725
# The exception is when not debugging but nevertheless
726
# running in the foreground; use the previously
727
# created wnull.
728
popen_args = {}
729
if (not self.server_settings["debug"]
730
and self.server_settings["foreground"]):
731
popen_args.update({"stdout": wnull,
732
"stderr": wnull })
733
435
self.checker = subprocess.Popen(command,
734
436
close_fds=True,
735
shell=True, cwd="/",
736
**popen_args)
737
except OSError as error:
738
logger.error("Failed to start subprocess",
739
exc_info=error)
740
return True
741
self.checker_callback_tag = (gobject.child_watch_add
742
(self.checker.pid,
743
self.checker_callback,
744
data=command))
745
# The checker may have completed before the gobject
746
# watch was added. Check for this.
747
try:
437
shell=True, cwd=u"/")
438
self.checker_callback_tag = (gobject.child_watch_add
439
(self.checker.pid,
440
self.checker_callback,
441
data=command))
442
# The checker may have completed before the gobject
443
# watch was added. Check for this.
748
444
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
749
except OSError as error:
750
if error.errno == errno.ECHILD:
751
# This should never happen
752
logger.error("Child process vanished",
753
exc_info=error)
754
return True
755
raise
756
if pid:
757
gobject.source_remove(self.checker_callback_tag)
758
self.checker_callback(pid, status, command)
445
if pid:
446
gobject.source_remove(self.checker_callback_tag)
447
self.checker_callback(pid, status, command)
448
except OSError, error:
449
logger.error(u"Failed to start subprocess: %s",
450
error)
759
451
# Re-run this periodically if run by gobject.timeout_add
760
452
return True
761
453
764
456
if self.checker_callback_tag:
765
457
gobject.source_remove(self.checker_callback_tag)
766
458
self.checker_callback_tag = None
767
if getattr(self, "checker", None) is None:
459
if getattr(self, u"checker", None) is None:
768
460
return
769
logger.debug("Stopping checker for %(name)s", vars(self))
461
logger.debug(u"Stopping checker for %(name)s", vars(self))
770
462
try:
771
self.checker.terminate()
772
#time.sleep(0.5)
463
os.kill(self.checker.pid, signal.SIGTERM)
464
#os.sleep(0.5)
773
465
#if self.checker.poll() is None:
774
# self.checker.kill()
775
except OSError as error:
466
# os.kill(self.checker.pid, signal.SIGKILL)
467
except OSError, error:
776
468
if error.errno != errno.ESRCH: # No such process
777
469
raise
778
470
self.checker = None
779
780
781
def dbus_service_property(dbus_interface, signature="v",
782
access="readwrite", byte_arrays=False):
471
472
def still_valid(self):
473
"""Has the timeout not yet passed for this client?"""
474
if not getattr(self, u"enabled", False):
475
return False
476
now = datetime.datetime.utcnow()
477
if self.last_checked_ok is None:
478
return now < (self.created + self.timeout)
479
else:
480
return now < (self.last_checked_ok + self.timeout)
481
482
483
def dbus_service_property(dbus_interface, signature=u"v",
484
access=u"readwrite", byte_arrays=False):
783
485
"""Decorators for marking methods of a DBusObjectWithProperties to
784
486
become properties on the D-Bus.
785
487
790
492
dbus.service.method, except there is only "signature", since the
791
493
type from Get() and the type sent to Set() is the same.
792
494
"""
793
# Encoding deeply encoded byte arrays is not supported yet by the
794
# "Set" method, so we fail early here:
795
if byte_arrays and signature != "ay":
796
raise ValueError("Byte arrays not supported for non-'ay'"
797
" signature {0!r}".format(signature))
798
495
def decorator(func):
799
496
func._dbus_is_property = True
800
497
func._dbus_interface = dbus_interface
801
498
func._dbus_signature = signature
802
499
func._dbus_access = access
803
500
func._dbus_name = func.__name__
804
if func._dbus_name.endswith("_dbus_property"):
501
if func._dbus_name.endswith(u"_dbus_property"):
805
502
func._dbus_name = func._dbus_name[:-14]
806
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
807
return func
808
return decorator
809
810
811
def dbus_interface_annotations(dbus_interface):
812
"""Decorator for marking functions returning interface annotations
813
814
Usage:
815
816
@dbus_interface_annotations("org.example.Interface")
817
def _foo(self): # Function name does not matter
818
return {"org.freedesktop.DBus.Deprecated": "true",
819
"org.freedesktop.DBus.Property.EmitsChangedSignal":
820
"false"}
821
"""
822
def decorator(func):
823
func._dbus_is_interface = True
824
func._dbus_interface = dbus_interface
825
func._dbus_name = dbus_interface
826
return func
827
return decorator
828
829
830
def dbus_annotations(annotations):
831
"""Decorator to annotate D-Bus methods, signals or properties
832
Usage:
833
834
@dbus_service_property("org.example.Interface", signature="b",
835
access="r")
836
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
837
"org.freedesktop.DBus.Property."
838
"EmitsChangedSignal": "false"})
839
def Property_dbus_property(self):
840
return dbus.Boolean(False)
841
"""
842
def decorator(func):
843
func._dbus_annotations = annotations
503
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
844
504
return func
845
505
return decorator
846
506
866
526
867
527
class DBusObjectWithProperties(dbus.service.Object):
868
528
"""A D-Bus object with properties.
869
529
870
530
Classes inheriting from this can use the dbus_service_property
871
531
decorator to expose methods as D-Bus properties. It exposes the
872
532
standard Get(), Set(), and GetAll() methods on the D-Bus.
873
533
"""
874
534
875
535
@staticmethod
876
def _is_dbus_thing(thing):
877
"""Returns a function testing if an attribute is a D-Bus thing
878
879
If called like _is_dbus_thing("method") it returns a function
880
suitable for use as predicate to inspect.getmembers().
881
"""
882
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
883
False)
536
def _is_dbus_property(obj):
537
return getattr(obj, u"_dbus_is_property", False)
884
538
885
def _get_all_dbus_things(self, thing):
539
def _get_all_dbus_properties(self):
886
540
"""Returns a generator of (name, attribute) pairs
887
541
"""
888
return ((getattr(athing.__get__(self), "_dbus_name",
889
name),
890
athing.__get__(self))
891
for cls in self.__class__.__mro__
892
for name, athing in
893
inspect.getmembers(cls,
894
self._is_dbus_thing(thing)))
542
return ((prop._dbus_name, prop)
543
for name, prop in
544
inspect.getmembers(self, self._is_dbus_property))
895
545
896
546
def _get_dbus_property(self, interface_name, property_name):
897
547
"""Returns a bound method if one exists which is a D-Bus
898
548
property with the specified name and interface.
899
549
"""
900
for cls in self.__class__.__mro__:
901
for name, value in (inspect.getmembers
902
(cls,
903
self._is_dbus_thing("property"))):
904
if (value._dbus_name == property_name
905
and value._dbus_interface == interface_name):
906
return value.__get__(self)
907
550
for name in (property_name,
551
property_name + u"_dbus_property"):
552
prop = getattr(self, name, None)
553
if (prop is None
554
or not self._is_dbus_property(prop)
555
or prop._dbus_name != property_name
556
or (interface_name and prop._dbus_interface
557
and interface_name != prop._dbus_interface)):
558
continue
559
return prop
908
560
# No such property
909
raise DBusPropertyNotFound(self.dbus_object_path + ":"
910
+ interface_name + "."
561
raise DBusPropertyNotFound(self.dbus_object_path + u":"
562
+ interface_name + u"."
911
563
+ property_name)
912
564
913
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
914
out_signature="v")
565
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
566
out_signature=u"v")
915
567
def Get(self, interface_name, property_name):
916
568
"""Standard D-Bus property Get() method, see D-Bus standard.
917
569
"""
918
570
prop = self._get_dbus_property(interface_name, property_name)
919
if prop._dbus_access == "write":
571
if prop._dbus_access == u"write":
920
572
raise DBusPropertyAccessException(property_name)
921
573
value = prop()
922
if not hasattr(value, "variant_level"):
574
if not hasattr(value, u"variant_level"):
923
575
return value
924
576
return type(value)(value, variant_level=value.variant_level+1)
925
577
926
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
578
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
927
579
def Set(self, interface_name, property_name, value):
928
580
"""Standard D-Bus property Set() method, see D-Bus standard.
929
581
"""
930
582
prop = self._get_dbus_property(interface_name, property_name)
931
if prop._dbus_access == "read":
583
if prop._dbus_access == u"read":
932
584
raise DBusPropertyAccessException(property_name)
933
if prop._dbus_get_args_options["byte_arrays"]:
934
# The byte_arrays option is not supported yet on
935
# signatures other than "ay".
936
if prop._dbus_signature != "ay":
937
raise ValueError
938
value = dbus.ByteArray(b''.join(chr(byte)
939
for byte in value))
585
if prop._dbus_get_args_options[u"byte_arrays"]:
586
value = dbus.ByteArray(''.join(unichr(byte)
587
for byte in value))
940
588
prop(value)
941
589
942
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
943
out_signature="a{sv}")
590
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
591
out_signature=u"a{sv}")
944
592
def GetAll(self, interface_name):
945
593
"""Standard D-Bus property GetAll() method, see D-Bus
946
594
standard.
947
595
948
596
Note: Will not include properties with access="write".
949
597
"""
950
properties = {}
951
for name, prop in self._get_all_dbus_things("property"):
598
all = {}
599
for name, prop in self._get_all_dbus_properties():
952
600
if (interface_name
953
601
and interface_name != prop._dbus_interface):
954
602
# Interface non-empty but did not match
955
603
continue
956
604
# Ignore write-only properties
957
if prop._dbus_access == "write":
605
if prop._dbus_access == u"write":
958
606
continue
959
607
value = prop()
960
if not hasattr(value, "variant_level"):
961
properties[name] = value
608
if not hasattr(value, u"variant_level"):
609
all[name] = value
962
610
continue
963
properties[name] = type(value)(value, variant_level=
964
value.variant_level+1)
965
return dbus.Dictionary(properties, signature="sv")
611
all[name] = type(value)(value, variant_level=
612
value.variant_level+1)
613
return dbus.Dictionary(all, signature=u"sv")
966
614
967
615
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
968
out_signature="s",
616
out_signature=u"s",
969
617
path_keyword='object_path',
970
618
connection_keyword='connection')
971
619
def Introspect(self, object_path, connection):
972
"""Overloading of standard D-Bus method.
973
974
Inserts property tags and interface annotation tags.
620
"""Standard D-Bus method, overloaded to insert property tags.
975
621
"""
976
622
xmlstring = dbus.service.Object.Introspect(self, object_path,
977
connection)
978
try:
979
document = xml.dom.minidom.parseString(xmlstring)
980
def make_tag(document, name, prop):
981
e = document.createElement("property")
982
e.setAttribute("name", name)
983
e.setAttribute("type", prop._dbus_signature)
984
e.setAttribute("access", prop._dbus_access)
985
return e
986
for if_tag in document.getElementsByTagName("interface"):
987
# Add property tags
988
for tag in (make_tag(document, name, prop)
989
for name, prop
990
in self._get_all_dbus_things("property")
991
if prop._dbus_interface
992
== if_tag.getAttribute("name")):
993
if_tag.appendChild(tag)
994
# Add annotation tags
995
for typ in ("method", "signal", "property"):
996
for tag in if_tag.getElementsByTagName(typ):
997
annots = dict()
998
for name, prop in (self.
999
_get_all_dbus_things(typ)):
1000
if (name == tag.getAttribute("name")
1001
and prop._dbus_interface
1002
== if_tag.getAttribute("name")):
1003
annots.update(getattr
1004
(prop,
1005
"_dbus_annotations",
1006
{}))
1007
for name, value in annots.iteritems():
1008
ann_tag = document.createElement(
1009
"annotation")
1010
ann_tag.setAttribute("name", name)
1011
ann_tag.setAttribute("value", value)
1012
tag.appendChild(ann_tag)
1013
# Add interface annotation tags
1014
for annotation, value in dict(
1015
itertools.chain.from_iterable(
1016
annotations().iteritems()
1017
for name, annotations in
1018
self._get_all_dbus_things("interface")
1019
if name == if_tag.getAttribute("name")
1020
)).iteritems():
1021
ann_tag = document.createElement("annotation")
1022
ann_tag.setAttribute("name", annotation)
1023
ann_tag.setAttribute("value", value)
1024
if_tag.appendChild(ann_tag)
1025
# Add the names to the return values for the
1026
# "org.freedesktop.DBus.Properties" methods
1027
if (if_tag.getAttribute("name")
1028
== "org.freedesktop.DBus.Properties"):
1029
for cn in if_tag.getElementsByTagName("method"):
1030
if cn.getAttribute("name") == "Get":
1031
for arg in cn.getElementsByTagName("arg"):
1032
if (arg.getAttribute("direction")
1033
== "out"):
1034
arg.setAttribute("name", "value")
1035
elif cn.getAttribute("name") == "GetAll":
1036
for arg in cn.getElementsByTagName("arg"):
1037
if (arg.getAttribute("direction")
1038
== "out"):
1039
arg.setAttribute("name", "props")
1040
xmlstring = document.toxml("utf-8")
1041
document.unlink()
1042
except (AttributeError, xml.dom.DOMException,
1043
xml.parsers.expat.ExpatError) as error:
1044
logger.error("Failed to override Introspection method",
1045
exc_info=error)
623
connection)
624
document = xml.dom.minidom.parseString(xmlstring)
625
del xmlstring
626
def make_tag(document, name, prop):
627
e = document.createElement(u"property")
628
e.setAttribute(u"name", name)
629
e.setAttribute(u"type", prop._dbus_signature)
630
e.setAttribute(u"access", prop._dbus_access)
631
return e
632
for if_tag in document.getElementsByTagName(u"interface"):
633
for tag in (make_tag(document, name, prop)
634
for name, prop
635
in self._get_all_dbus_properties()
636
if prop._dbus_interface
637
== if_tag.getAttribute(u"name")):
638
if_tag.appendChild(tag)
639
xmlstring = document.toxml(u"utf-8")
640
document.unlink()
1046
641
return xmlstring
1047
642
1048
643
1049
def datetime_to_dbus(dt, variant_level=0):
1050
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1051
if dt is None:
1052
return dbus.String("", variant_level = variant_level)
1053
return dbus.String(dt.isoformat(),
1054
variant_level=variant_level)
1055
1056
1057
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1058
"""A class decorator; applied to a subclass of
1059
dbus.service.Object, it will add alternate D-Bus attributes with
1060
interface names according to the "alt_interface_names" mapping.
1061
Usage:
1062
1063
@alternate_dbus_interfaces({"org.example.Interface":
1064
"net.example.AlternateInterface"})
1065
class SampleDBusObject(dbus.service.Object):
1066
@dbus.service.method("org.example.Interface")
1067
def SampleDBusMethod():
1068
pass
1069
1070
The above "SampleDBusMethod" on "SampleDBusObject" will be
1071
reachable via two interfaces: "org.example.Interface" and
1072
"net.example.AlternateInterface", the latter of which will have
1073
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1074
"true", unless "deprecate" is passed with a False value.
1075
1076
This works for methods and signals, and also for D-Bus properties
1077
(from DBusObjectWithProperties) and interfaces (from the
1078
dbus_interface_annotations decorator).
1079
"""
1080
def wrapper(cls):
1081
for orig_interface_name, alt_interface_name in (
1082
alt_interface_names.iteritems()):
1083
attr = {}
1084
interface_names = set()
1085
# Go though all attributes of the class
1086
for attrname, attribute in inspect.getmembers(cls):
1087
# Ignore non-D-Bus attributes, and D-Bus attributes
1088
# with the wrong interface name
1089
if (not hasattr(attribute, "_dbus_interface")
1090
or not attribute._dbus_interface
1091
.startswith(orig_interface_name)):
1092
continue
1093
# Create an alternate D-Bus interface name based on
1094
# the current name
1095
alt_interface = (attribute._dbus_interface
1096
.replace(orig_interface_name,
1097
alt_interface_name))
1098
interface_names.add(alt_interface)
1099
# Is this a D-Bus signal?
1100
if getattr(attribute, "_dbus_is_signal", False):
1101
# Extract the original non-method undecorated
1102
# function by black magic
1103
nonmethod_func = (dict(
1104
zip(attribute.func_code.co_freevars,
1105
attribute.__closure__))["func"]
1106
.cell_contents)
1107
# Create a new, but exactly alike, function
1108
# object, and decorate it to be a new D-Bus signal
1109
# with the alternate D-Bus interface name
1110
new_function = (dbus.service.signal
1111
(alt_interface,
1112
attribute._dbus_signature)
1113
(types.FunctionType(
1114
nonmethod_func.func_code,
1115
nonmethod_func.func_globals,
1116
nonmethod_func.func_name,
1117
nonmethod_func.func_defaults,
1118
nonmethod_func.func_closure)))
1119
# Copy annotations, if any
1120
try:
1121
new_function._dbus_annotations = (
1122
dict(attribute._dbus_annotations))
1123
except AttributeError:
1124
pass
1125
# Define a creator of a function to call both the
1126
# original and alternate functions, so both the
1127
# original and alternate signals gets sent when
1128
# the function is called
1129
def fixscope(func1, func2):
1130
"""This function is a scope container to pass
1131
func1 and func2 to the "call_both" function
1132
outside of its arguments"""
1133
def call_both(*args, **kwargs):
1134
"""This function will emit two D-Bus
1135
signals by calling func1 and func2"""
1136
func1(*args, **kwargs)
1137
func2(*args, **kwargs)
1138
return call_both
1139
# Create the "call_both" function and add it to
1140
# the class
1141
attr[attrname] = fixscope(attribute, new_function)
1142
# Is this a D-Bus method?
1143
elif getattr(attribute, "_dbus_is_method", False):
1144
# Create a new, but exactly alike, function
1145
# object. Decorate it to be a new D-Bus method
1146
# with the alternate D-Bus interface name. Add it
1147
# to the class.
1148
attr[attrname] = (dbus.service.method
1149
(alt_interface,
1150
attribute._dbus_in_signature,
1151
attribute._dbus_out_signature)
1152
(types.FunctionType
1153
(attribute.func_code,
1154
attribute.func_globals,
1155
attribute.func_name,
1156
attribute.func_defaults,
1157
attribute.func_closure)))
1158
# Copy annotations, if any
1159
try:
1160
attr[attrname]._dbus_annotations = (
1161
dict(attribute._dbus_annotations))
1162
except AttributeError:
1163
pass
1164
# Is this a D-Bus property?
1165
elif getattr(attribute, "_dbus_is_property", False):
1166
# Create a new, but exactly alike, function
1167
# object, and decorate it to be a new D-Bus
1168
# property with the alternate D-Bus interface
1169
# name. Add it to the class.
1170
attr[attrname] = (dbus_service_property
1171
(alt_interface,
1172
attribute._dbus_signature,
1173
attribute._dbus_access,
1174
attribute
1175
._dbus_get_args_options
1176
["byte_arrays"])
1177
(types.FunctionType
1178
(attribute.func_code,
1179
attribute.func_globals,
1180
attribute.func_name,
1181
attribute.func_defaults,
1182
attribute.func_closure)))
1183
# Copy annotations, if any
1184
try:
1185
attr[attrname]._dbus_annotations = (
1186
dict(attribute._dbus_annotations))
1187
except AttributeError:
1188
pass
1189
# Is this a D-Bus interface?
1190
elif getattr(attribute, "_dbus_is_interface", False):
1191
# Create a new, but exactly alike, function
1192
# object. Decorate it to be a new D-Bus interface
1193
# with the alternate D-Bus interface name. Add it
1194
# to the class.
1195
attr[attrname] = (dbus_interface_annotations
1196
(alt_interface)
1197
(types.FunctionType
1198
(attribute.func_code,
1199
attribute.func_globals,
1200
attribute.func_name,
1201
attribute.func_defaults,
1202
attribute.func_closure)))
1203
if deprecate:
1204
# Deprecate all alternate interfaces
1205
iname="_AlternateDBusNames_interface_annotation{0}"
1206
for interface_name in interface_names:
1207
@dbus_interface_annotations(interface_name)
1208
def func(self):
1209
return { "org.freedesktop.DBus.Deprecated":
1210
"true" }
1211
# Find an unused name
1212
for aname in (iname.format(i)
1213
for i in itertools.count()):
1214
if aname not in attr:
1215
attr[aname] = func
1216
break
1217
if interface_names:
1218
# Replace the class with a new subclass of it with
1219
# methods, signals, etc. as created above.
1220
cls = type(b"{0}Alternate".format(cls.__name__),
1221
(cls,), attr)
1222
return cls
1223
return wrapper
1224
1225
1226
@alternate_dbus_interfaces({"se.recompile.Mandos":
1227
"se.bsnet.fukt.Mandos"})
1228
644
class ClientDBus(Client, DBusObjectWithProperties):
1229
645
"""A Client class using D-Bus
1230
646
1232
648
dbus_object_path: dbus.ObjectPath
1233
649
bus: dbus.SystemBus()
1234
650
"""
1235
1236
runtime_expansions = (Client.runtime_expansions
1237
+ ("dbus_object_path",))
1238
1239
651
# dbus.service.Object doesn't use super(), so we can't either.
1240
652
1241
653
def __init__(self, bus = None, *args, **kwargs):
1243
655
Client.__init__(self, *args, **kwargs)
1244
656
# Only now, when this client is initialized, can it show up on
1245
657
# the D-Bus
1246
client_object_name = unicode(self.name).translate(
1247
{ord("."): ord("_"),
1248
ord("-"): ord("_")})
1249
658
self.dbus_object_path = (dbus.ObjectPath
1250
("/clients/" + client_object_name))
659
(u"/clients/"
660
+ self.name.replace(u".", u"_")))
1251
661
DBusObjectWithProperties.__init__(self, self.bus,
1252
662
self.dbus_object_path)
1253
663
1254
def notifychangeproperty(transform_func,
1255
dbus_name, type_func=lambda x: x,
1256
variant_level=1):
1257
""" Modify a variable so that it's a property which announces
1258
its changes to DBus.
1259
1260
transform_fun: Function that takes a value and a variant_level
1261
and transforms it to a D-Bus type.
1262
dbus_name: D-Bus name of the variable
1263
type_func: Function that transform the value before sending it
1264
to the D-Bus. Default: no transform
1265
variant_level: D-Bus variant level. Default: 1
1266
"""
1267
attrname = "_{0}".format(dbus_name)
1268
def setter(self, value):
1269
if hasattr(self, "dbus_object_path"):
1270
if (not hasattr(self, attrname) or
1271
type_func(getattr(self, attrname, None))
1272
!= type_func(value)):
1273
dbus_value = transform_func(type_func(value),
1274
variant_level
1275
=variant_level)
1276
self.PropertyChanged(dbus.String(dbus_name),
1277
dbus_value)
1278
setattr(self, attrname, value)
1279
1280
return property(lambda self: getattr(self, attrname), setter)
1281
1282
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1283
approvals_pending = notifychangeproperty(dbus.Boolean,
1284
"ApprovalPending",
1285
type_func = bool)
1286
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1287
last_enabled = notifychangeproperty(datetime_to_dbus,
1288
"LastEnabled")
1289
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1290
type_func = lambda checker:
1291
checker is not None)
1292
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1293
"LastCheckedOK")
1294
last_checker_status = notifychangeproperty(dbus.Int16,
1295
"LastCheckerStatus")
1296
last_approval_request = notifychangeproperty(
1297
datetime_to_dbus, "LastApprovalRequest")
1298
approved_by_default = notifychangeproperty(dbus.Boolean,
1299
"ApprovedByDefault")
1300
approval_delay = notifychangeproperty(dbus.UInt64,
1301
"ApprovalDelay",
1302
type_func =
1303
timedelta_to_milliseconds)
1304
approval_duration = notifychangeproperty(
1305
dbus.UInt64, "ApprovalDuration",
1306
type_func = timedelta_to_milliseconds)
1307
host = notifychangeproperty(dbus.String, "Host")
1308
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1309
type_func =
1310
timedelta_to_milliseconds)
1311
extended_timeout = notifychangeproperty(
1312
dbus.UInt64, "ExtendedTimeout",
1313
type_func = timedelta_to_milliseconds)
1314
interval = notifychangeproperty(dbus.UInt64,
1315
"Interval",
1316
type_func =
1317
timedelta_to_milliseconds)
1318
checker_command = notifychangeproperty(dbus.String, "Checker")
1319
1320
del notifychangeproperty
664
@staticmethod
665
def _datetime_to_dbus(dt, variant_level=0):
666
"""Convert a UTC datetime.datetime() to a D-Bus type."""
667
return dbus.String(dt.isoformat(),
668
variant_level=variant_level)
669
670
def enable(self):
671
oldstate = getattr(self, u"enabled", False)
672
r = Client.enable(self)
673
if oldstate != self.enabled:
674
# Emit D-Bus signals
675
self.PropertyChanged(dbus.String(u"enabled"),
676
dbus.Boolean(True, variant_level=1))
677
self.PropertyChanged(
678
dbus.String(u"last_enabled"),
679
self._datetime_to_dbus(self.last_enabled,
680
variant_level=1))
681
return r
682
683
def disable(self, signal = True):
684
oldstate = getattr(self, u"enabled", False)
685
r = Client.disable(self)
686
if signal and oldstate != self.enabled:
687
# Emit D-Bus signal
688
self.PropertyChanged(dbus.String(u"enabled"),
689
dbus.Boolean(False, variant_level=1))
690
return r
1321
691
1322
692
def __del__(self, *args, **kwargs):
1323
693
try:
1324
694
self.remove_from_connection()
1325
695
except LookupError:
1326
696
pass
1327
if hasattr(DBusObjectWithProperties, "__del__"):
697
if hasattr(DBusObjectWithProperties, u"__del__"):
1328
698
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1329
699
Client.__del__(self, *args, **kwargs)
1330
700
1332
702
*args, **kwargs):
1333
703
self.checker_callback_tag = None
1334
704
self.checker = None
705
# Emit D-Bus signal
706
self.PropertyChanged(dbus.String(u"checker_running"),
707
dbus.Boolean(False, variant_level=1))
1335
708
if os.WIFEXITED(condition):
1336
709
exitstatus = os.WEXITSTATUS(condition)
1337
710
# Emit D-Bus signal
1347
720
return Client.checker_callback(self, pid, condition, command,
1348
721
*args, **kwargs)
1349
722
723
def checked_ok(self, *args, **kwargs):
724
r = Client.checked_ok(self, *args, **kwargs)
725
# Emit D-Bus signal
726
self.PropertyChanged(
727
dbus.String(u"last_checked_ok"),
728
(self._datetime_to_dbus(self.last_checked_ok,
729
variant_level=1)))
730
return r
731
1350
732
def start_checker(self, *args, **kwargs):
1351
733
old_checker = self.checker
1352
734
if self.checker is not None:
1359
741
and old_checker_pid != self.checker.pid):
1360
742
# Emit D-Bus signal
1361
743
self.CheckerStarted(self.current_checker_command)
1362
return r
1363
1364
def _reset_approved(self):
1365
self.approved = None
1366
return False
1367
1368
def approve(self, value=True):
1369
self.approved = value
1370
gobject.timeout_add(timedelta_to_milliseconds
1371
(self.approval_duration),
1372
self._reset_approved)
1373
self.send_changedstate()
1374
1375
## D-Bus methods, signals & properties
1376
_interface = "se.recompile.Mandos.Client"
1377
1378
## Interfaces
1379
1380
@dbus_interface_annotations(_interface)
1381
def _foo(self):
1382
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1383
"false"}
1384
1385
## Signals
744
self.PropertyChanged(
745
dbus.String(u"checker_running"),
746
dbus.Boolean(True, variant_level=1))
747
return r
748
749
def stop_checker(self, *args, **kwargs):
750
old_checker = getattr(self, u"checker", None)
751
r = Client.stop_checker(self, *args, **kwargs)
752
if (old_checker is not None
753
and getattr(self, u"checker", None) is None):
754
self.PropertyChanged(dbus.String(u"checker_running"),
755
dbus.Boolean(False, variant_level=1))
756
return r
757
758
## D-Bus methods & signals
759
_interface = u"se.bsnet.fukt.Mandos.Client"
760
761
# CheckedOK - method
762
@dbus.service.method(_interface)
763
def CheckedOK(self):
764
return self.checked_ok()
1386
765
1387
766
# CheckerCompleted - signal
1388
@dbus.service.signal(_interface, signature="nxs")
767
@dbus.service.signal(_interface, signature=u"nxs")
1389
768
def CheckerCompleted(self, exitcode, waitstatus, command):
1390
769
"D-Bus signal"
1391
770
pass
1392
771
1393
772
# CheckerStarted - signal
1394
@dbus.service.signal(_interface, signature="s")
773
@dbus.service.signal(_interface, signature=u"s")
1395
774
def CheckerStarted(self, command):
1396
775
"D-Bus signal"
1397
776
pass
1398
777
1399
778
# PropertyChanged - signal
1400
@dbus.service.signal(_interface, signature="sv")
779
@dbus.service.signal(_interface, signature=u"sv")
1401
780
def PropertyChanged(self, property, value):
1402
781
"D-Bus signal"
1403
782
pass
1404
783
1405
# GotSecret - signal
784
# ReceivedSecret - signal
1406
785
@dbus.service.signal(_interface)
1407
def GotSecret(self):
1408
"""D-Bus signal
1409
Is sent after a successful transfer of secret from the Mandos
1410
server to mandos-client
1411
"""
786
def ReceivedSecret(self):
787
"D-Bus signal"
1412
788
pass
1413
789
1414
790
# Rejected - signal
1415
@dbus.service.signal(_interface, signature="s")
1416
def Rejected(self, reason):
791
@dbus.service.signal(_interface)
792
def Rejected(self):
1417
793
"D-Bus signal"
1418
794
pass
1419
795
1420
# NeedApproval - signal
1421
@dbus.service.signal(_interface, signature="tb")
1422
def NeedApproval(self, timeout, default):
1423
"D-Bus signal"
1424
return self.need_approval()
1425
1426
## Methods
1427
1428
# Approve - method
1429
@dbus.service.method(_interface, in_signature="b")
1430
def Approve(self, value):
1431
self.approve(value)
1432
1433
# CheckedOK - method
1434
@dbus.service.method(_interface)
1435
def CheckedOK(self):
1436
self.checked_ok()
1437
1438
796
# Enable - method
1439
797
@dbus.service.method(_interface)
1440
798
def Enable(self):
1458
816
def StopChecker(self):
1459
817
self.stop_checker()
1460
818
1461
## Properties
1462
1463
# ApprovalPending - property
1464
@dbus_service_property(_interface, signature="b", access="read")
1465
def ApprovalPending_dbus_property(self):
1466
return dbus.Boolean(bool(self.approvals_pending))
1467
1468
# ApprovedByDefault - property
1469
@dbus_service_property(_interface, signature="b",
1470
access="readwrite")
1471
def ApprovedByDefault_dbus_property(self, value=None):
1472
if value is None: # get
1473
return dbus.Boolean(self.approved_by_default)
1474
self.approved_by_default = bool(value)
1475
1476
# ApprovalDelay - property
1477
@dbus_service_property(_interface, signature="t",
1478
access="readwrite")
1479
def ApprovalDelay_dbus_property(self, value=None):
1480
if value is None: # get
1481
return dbus.UInt64(self.approval_delay_milliseconds())
1482
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1483
1484
# ApprovalDuration - property
1485
@dbus_service_property(_interface, signature="t",
1486
access="readwrite")
1487
def ApprovalDuration_dbus_property(self, value=None):
1488
if value is None: # get
1489
return dbus.UInt64(timedelta_to_milliseconds(
1490
self.approval_duration))
1491
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1492
1493
# Name - property
1494
@dbus_service_property(_interface, signature="s", access="read")
1495
def Name_dbus_property(self):
819
# name - property
820
@dbus_service_property(_interface, signature=u"s", access=u"read")
821
def name_dbus_property(self):
1496
822
return dbus.String(self.name)
1497
823
1498
# Fingerprint - property
1499
@dbus_service_property(_interface, signature="s", access="read")
1500
def Fingerprint_dbus_property(self):
824
# fingerprint - property
825
@dbus_service_property(_interface, signature=u"s", access=u"read")
826
def fingerprint_dbus_property(self):
1501
827
return dbus.String(self.fingerprint)
1502
828
1503
# Host - property
1504
@dbus_service_property(_interface, signature="s",
1505
access="readwrite")
1506
def Host_dbus_property(self, value=None):
829
# host - property
830
@dbus_service_property(_interface, signature=u"s",
831
access=u"readwrite")
832
def host_dbus_property(self, value=None):
1507
833
if value is None: # get
1508
834
return dbus.String(self.host)
1509
self.host = unicode(value)
1510
1511
# Created - property
1512
@dbus_service_property(_interface, signature="s", access="read")
1513
def Created_dbus_property(self):
1514
return datetime_to_dbus(self.created)
1515
1516
# LastEnabled - property
1517
@dbus_service_property(_interface, signature="s", access="read")
1518
def LastEnabled_dbus_property(self):
1519
return datetime_to_dbus(self.last_enabled)
1520
1521
# Enabled - property
1522
@dbus_service_property(_interface, signature="b",
1523
access="readwrite")
1524
def Enabled_dbus_property(self, value=None):
835
self.host = value
836
# Emit D-Bus signal
837
self.PropertyChanged(dbus.String(u"host"),
838
dbus.String(value, variant_level=1))
839
840
# created - property
841
@dbus_service_property(_interface, signature=u"s", access=u"read")
842
def created_dbus_property(self):
843
return dbus.String(self._datetime_to_dbus(self.created))
844
845
# last_enabled - property
846
@dbus_service_property(_interface, signature=u"s", access=u"read")
847
def last_enabled_dbus_property(self):
848
if self.last_enabled is None:
849
return dbus.String(u"")
850
return dbus.String(self._datetime_to_dbus(self.last_enabled))
851
852
# enabled - property
853
@dbus_service_property(_interface, signature=u"b",
854
access=u"readwrite")
855
def enabled_dbus_property(self, value=None):
1525
856
if value is None: # get
1526
857
return dbus.Boolean(self.enabled)
1527
858
if value:
1529
860
else:
1530
861
self.disable()
1531
862
1532
# LastCheckedOK - property
1533
@dbus_service_property(_interface, signature="s",
1534
access="readwrite")
1535
def LastCheckedOK_dbus_property(self, value=None):
863
# last_checked_ok - property
864
@dbus_service_property(_interface, signature=u"s",
865
access=u"readwrite")
866
def last_checked_ok_dbus_property(self, value=None):
1536
867
if value is not None:
1537
868
self.checked_ok()
1538
869
return
1539
return datetime_to_dbus(self.last_checked_ok)
1540
1541
# LastCheckerStatus - property
1542
@dbus_service_property(_interface, signature="n",
1543
access="read")
1544
def LastCheckerStatus_dbus_property(self):
1545
return dbus.Int16(self.last_checker_status)
1546
1547
# Expires - property
1548
@dbus_service_property(_interface, signature="s", access="read")
1549
def Expires_dbus_property(self):
1550
return datetime_to_dbus(self.expires)
1551
1552
# LastApprovalRequest - property
1553
@dbus_service_property(_interface, signature="s", access="read")
1554
def LastApprovalRequest_dbus_property(self):
1555
return datetime_to_dbus(self.last_approval_request)
1556
1557
# Timeout - property
1558
@dbus_service_property(_interface, signature="t",
1559
access="readwrite")
1560
def Timeout_dbus_property(self, value=None):
870
if self.last_checked_ok is None:
871
return dbus.String(u"")
872
return dbus.String(self._datetime_to_dbus(self
873
.last_checked_ok))
874
875
# timeout - property
876
@dbus_service_property(_interface, signature=u"t",
877
access=u"readwrite")
878
def timeout_dbus_property(self, value=None):
1561
879
if value is None: # get
1562
880
return dbus.UInt64(self.timeout_milliseconds())
1563
old_timeout = self.timeout
1564
881
self.timeout = datetime.timedelta(0, 0, 0, value)
1565
# Reschedule disabling
1566
if self.enabled:
1567
now = datetime.datetime.utcnow()
1568
self.expires += self.timeout - old_timeout
1569
if self.expires <= now:
1570
# The timeout has passed
1571
self.disable()
1572
else:
1573
if (getattr(self, "disable_initiator_tag", None)
1574
is None):
1575
return
1576
gobject.source_remove(self.disable_initiator_tag)
1577
self.disable_initiator_tag = (
1578
gobject.timeout_add(
1579
timedelta_to_milliseconds(self.expires - now),
1580
self.disable))
1581
1582
# ExtendedTimeout - property
1583
@dbus_service_property(_interface, signature="t",
1584
access="readwrite")
1585
def ExtendedTimeout_dbus_property(self, value=None):
1586
if value is None: # get
1587
return dbus.UInt64(self.extended_timeout_milliseconds())
1588
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1589
1590
# Interval - property
1591
@dbus_service_property(_interface, signature="t",
1592
access="readwrite")
1593
def Interval_dbus_property(self, value=None):
882
# Emit D-Bus signal
883
self.PropertyChanged(dbus.String(u"timeout"),
884
dbus.UInt64(value, variant_level=1))
885
if getattr(self, u"disable_initiator_tag", None) is None:
886
return
887
# Reschedule timeout
888
gobject.source_remove(self.disable_initiator_tag)
889
self.disable_initiator_tag = None
890
time_to_die = (self.
891
_timedelta_to_milliseconds((self
892
.last_checked_ok
893
+ self.timeout)
894
- datetime.datetime
895
.utcnow()))
896
if time_to_die <= 0:
897
# The timeout has passed
898
self.disable()
899
else:
900
self.disable_initiator_tag = (gobject.timeout_add
901
(time_to_die, self.disable))
902
903
# interval - property
904
@dbus_service_property(_interface, signature=u"t",
905
access=u"readwrite")
906
def interval_dbus_property(self, value=None):
1594
907
if value is None: # get
1595
908
return dbus.UInt64(self.interval_milliseconds())
1596
909
self.interval = datetime.timedelta(0, 0, 0, value)
1597
if getattr(self, "checker_initiator_tag", None) is None:
910
# Emit D-Bus signal
911
self.PropertyChanged(dbus.String(u"interval"),
912
dbus.UInt64(value, variant_level=1))
913
if getattr(self, u"checker_initiator_tag", None) is None:
1598
914
return
1599
if self.enabled:
1600
# Reschedule checker run
1601
gobject.source_remove(self.checker_initiator_tag)
1602
self.checker_initiator_tag = (gobject.timeout_add
1603
(value, self.start_checker))
1604
self.start_checker() # Start one now, too
1605
1606
# Checker - property
1607
@dbus_service_property(_interface, signature="s",
1608
access="readwrite")
1609
def Checker_dbus_property(self, value=None):
915
# Reschedule checker run
916
gobject.source_remove(self.checker_initiator_tag)
917
self.checker_initiator_tag = (gobject.timeout_add
918
(value, self.start_checker))
919
self.start_checker() # Start one now, too
920
921
# checker - property
922
@dbus_service_property(_interface, signature=u"s",
923
access=u"readwrite")
924
def checker_dbus_property(self, value=None):
1610
925
if value is None: # get
1611
926
return dbus.String(self.checker_command)
1612
self.checker_command = unicode(value)
927
self.checker_command = value
928
# Emit D-Bus signal
929
self.PropertyChanged(dbus.String(u"checker"),
930
dbus.String(self.checker_command,
931
variant_level=1))
1613
932
1614
# CheckerRunning - property
1615
@dbus_service_property(_interface, signature="b",
1616
access="readwrite")
1617
def CheckerRunning_dbus_property(self, value=None):
933
# checker_running - property
934
@dbus_service_property(_interface, signature=u"b",
935
access=u"readwrite")
936
def checker_running_dbus_property(self, value=None):
1618
937
if value is None: # get
1619
938
return dbus.Boolean(self.checker is not None)
1620
939
if value:
1622
941
else:
1623
942
self.stop_checker()
1624
943
1625
# ObjectPath - property
1626
@dbus_service_property(_interface, signature="o", access="read")
1627
def ObjectPath_dbus_property(self):
944
# object_path - property
945
@dbus_service_property(_interface, signature=u"o", access=u"read")
946
def object_path_dbus_property(self):
1628
947
return self.dbus_object_path # is already a dbus.ObjectPath
1629
948
1630
# Secret = property
1631
@dbus_service_property(_interface, signature="ay",
1632
access="write", byte_arrays=True)
1633
def Secret_dbus_property(self, value):
949
# secret = property
950
@dbus_service_property(_interface, signature=u"ay",
951
access=u"write", byte_arrays=True)
952
def secret_dbus_property(self, value):
1634
953
self.secret = str(value)
1635
954
1636
955
del _interface
1637
956
1638
957
1639
class ProxyClient(object):
1640
def __init__(self, child_pipe, fpr, address):
1641
self._pipe = child_pipe
1642
self._pipe.send(('init', fpr, address))
1643
if not self._pipe.recv():
1644
raise KeyError()
1645
1646
def __getattribute__(self, name):
1647
if name == '_pipe':
1648
return super(ProxyClient, self).__getattribute__(name)
1649
self._pipe.send(('getattr', name))
1650
data = self._pipe.recv()
1651
if data[0] == 'data':
1652
return data[1]
1653
if data[0] == 'function':
1654
def func(*args, **kwargs):
1655
self._pipe.send(('funcall', name, args, kwargs))
1656
return self._pipe.recv()[1]
1657
return func
1658
1659
def __setattr__(self, name, value):
1660
if name == '_pipe':
1661
return super(ProxyClient, self).__setattr__(name, value)
1662
self._pipe.send(('setattr', name, value))
1663
1664
1665
958
class ClientHandler(socketserver.BaseRequestHandler, object):
1666
959
"""A class to handle client connections.
1667
960
1669
962
Note: This will run in its own forked process."""
1670
963
1671
964
def handle(self):
1672
with contextlib.closing(self.server.child_pipe) as child_pipe:
1673
logger.info("TCP connection from: %s",
1674
unicode(self.client_address))
1675
logger.debug("Pipe FD: %d",
1676
self.server.child_pipe.fileno())
1677
965
logger.info(u"TCP connection from: %s",
966
unicode(self.client_address))
967
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
968
# Open IPC pipe to parent process
969
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1678
970
session = (gnutls.connection
1679
971
.ClientSession(self.request,
1680
972
gnutls.connection
1681
973
.X509Credentials()))
1682
974
975
line = self.request.makefile().readline()
976
logger.debug(u"Protocol version: %r", line)
977
try:
978
if int(line.strip().split()[0]) > 1:
979
raise RuntimeError
980
except (ValueError, IndexError, RuntimeError), error:
981
logger.error(u"Unknown protocol version: %s", error)
982
return
983
1683
984
# Note: gnutls.connection.X509Credentials is really a
1684
985
# generic GnuTLS certificate credentials object so long as
1685
986
# no X.509 keys are added to it. Therefore, we can use it
1686
987
# here despite using OpenPGP certificates.
1687
988
1688
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1689
# "+AES-256-CBC", "+SHA1",
1690
# "+COMP-NULL", "+CTYPE-OPENPGP",
1691
# "+DHE-DSS"))
989
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
990
# u"+AES-256-CBC", u"+SHA1",
991
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
992
# u"+DHE-DSS"))
1692
993
# Use a fallback default, since this MUST be set.
1693
994
priority = self.server.gnutls_priority
1694
995
if priority is None:
1695
priority = "NORMAL"
996
priority = u"NORMAL"
1696
997
(gnutls.library.functions
1697
998
.gnutls_priority_set_direct(session._c_object,
1698
999
priority, None))
1699
1000
1700
# Start communication using the Mandos protocol
1701
# Get protocol number
1702
line = self.request.makefile().readline()
1703
logger.debug("Protocol version: %r", line)
1704
try:
1705
if int(line.strip().split()[0]) > 1:
1706
raise RuntimeError(line)
1707
except (ValueError, IndexError, RuntimeError) as error:
1708
logger.error("Unknown protocol version: %s", error)
1709
return
1710
1711
# Start GnuTLS connection
1712
1001
try:
1713
1002
session.handshake()
1714
except gnutls.errors.GNUTLSError as error:
1715
logger.warning("Handshake failed: %s", error)
1003
except gnutls.errors.GNUTLSError, error:
1004
logger.warning(u"Handshake failed: %s", error)
1716
1005
# Do not run session.bye() here: the session is not
1717
1006
# established. Just abandon the request.
1718
1007
return
1719
logger.debug("Handshake succeeded")
1720
1721
approval_required = False
1008
logger.debug(u"Handshake succeeded")
1722
1009
try:
1723
try:
1724
fpr = self.fingerprint(self.peer_certificate
1725
(session))
1726
except (TypeError,
1727
gnutls.errors.GNUTLSError) as error:
1728
logger.warning("Bad certificate: %s", error)
1729
return
1730
logger.debug("Fingerprint: %s", fpr)
1731
1732
try:
1733
client = ProxyClient(child_pipe, fpr,
1734
self.client_address)
1735
except KeyError:
1736
return
1737
1738
if client.approval_delay:
1739
delay = client.approval_delay
1740
client.approvals_pending += 1
1741
approval_required = True
1742
1743
while True:
1744
if not client.enabled:
1745
logger.info("Client %s is disabled",
1746
client.name)
1747
if self.server.use_dbus:
1748
# Emit D-Bus signal
1749
client.Rejected("Disabled")
1750
return
1751
1752
if client.approved or not client.approval_delay:
1753
#We are approved or approval is disabled
1754
break
1755
elif client.approved is None:
1756
logger.info("Client %s needs approval",
1757
client.name)
1758
if self.server.use_dbus:
1759
# Emit D-Bus signal
1760
client.NeedApproval(
1761
client.approval_delay_milliseconds(),
1762
client.approved_by_default)
1763
else:
1764
logger.warning("Client %s was not approved",
1765
client.name)
1766
if self.server.use_dbus:
1767
# Emit D-Bus signal
1768
client.Rejected("Denied")
1769
return
1770
1771
#wait until timeout or approved
1772
time = datetime.datetime.now()
1773
client.changedstate.acquire()
1774
client.changedstate.wait(
1775
float(timedelta_to_milliseconds(delay)
1776
/ 1000))
1777
client.changedstate.release()
1778
time2 = datetime.datetime.now()
1779
if (time2 - time) >= delay:
1780
if not client.approved_by_default:
1781
logger.warning("Client %s timed out while"
1782
" waiting for approval",
1783
client.name)
1784
if self.server.use_dbus:
1785
# Emit D-Bus signal
1786
client.Rejected("Approval timed out")
1787
return
1788
else:
1789
break
1790
else:
1791
delay -= time2 - time
1792
1793
sent_size = 0
1794
while sent_size < len(client.secret):
1795
try:
1796
sent = session.send(client.secret[sent_size:])
1797
except gnutls.errors.GNUTLSError as error:
1798
logger.warning("gnutls send failed",
1799
exc_info=error)
1800
return
1801
logger.debug("Sent: %d, remaining: %d",
1802
sent, len(client.secret)
1803
- (sent_size + sent))
1804
sent_size += sent
1805
1806
logger.info("Sending secret to %s", client.name)
1807
# bump the timeout using extended_timeout
1808
client.bump_timeout(client.extended_timeout)
1809
if self.server.use_dbus:
1810
# Emit D-Bus signal
1811
client.GotSecret()
1010
fpr = self.fingerprint(self.peer_certificate(session))
1011
except (TypeError, gnutls.errors.GNUTLSError), error:
1012
logger.warning(u"Bad certificate: %s", error)
1013
session.bye()
1014
return
1015
logger.debug(u"Fingerprint: %s", fpr)
1812
1016
1813
finally:
1814
if approval_required:
1815
client.approvals_pending -= 1
1816
try:
1817
session.bye()
1818
except gnutls.errors.GNUTLSError as error:
1819
logger.warning("GnuTLS bye failed",
1820
exc_info=error)
1017
for c in self.server.clients:
1018
if c.fingerprint == fpr:
1019
client = c
1020
break
1021
else:
1022
ipc.write(u"NOTFOUND %s %s\n"
1023
% (fpr, unicode(self.client_address)))
1024
session.bye()
1025
return
1026
# Have to check if client.still_valid(), since it is
1027
# possible that the client timed out while establishing
1028
# the GnuTLS session.
1029
if not client.still_valid():
1030
ipc.write(u"INVALID %s\n" % client.name)
1031
session.bye()
1032
return
1033
ipc.write(u"SENDING %s\n" % client.name)
1034
sent_size = 0
1035
while sent_size < len(client.secret):
1036
sent = session.send(client.secret[sent_size:])
1037
logger.debug(u"Sent: %d, remaining: %d",
1038
sent, len(client.secret)
1039
- (sent_size + sent))
1040
sent_size += sent
1041
session.bye()
1821
1042
1822
1043
@staticmethod
1823
1044
def peer_certificate(session):
1833
1054
.gnutls_certificate_get_peers
1834
1055
(session._c_object, ctypes.byref(list_size)))
1835
1056
if not bool(cert_list) and list_size.value != 0:
1836
raise gnutls.errors.GNUTLSError("error getting peer"
1837
" certificate")
1057
raise gnutls.errors.GNUTLSError(u"error getting peer"
1058
u" certificate")
1838
1059
if list_size.value == 0:
1839
1060
return None
1840
1061
cert = cert_list[0]
1866
1087
if crtverify.value != 0:
1867
1088
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1868
1089
raise (gnutls.errors.CertificateSecurityError
1869
("Verify failed"))
1090
(u"Verify failed"))
1870
1091
# New buffer for the fingerprint
1871
1092
buf = ctypes.create_string_buffer(20)
1872
1093
buf_len = ctypes.c_size_t()
1879
1100
# Convert the buffer to a Python bytestring
1880
1101
fpr = ctypes.string_at(buf, buf_len.value)
1881
1102
# Convert the bytestring to hexadecimal notation
1882
hex_fpr = binascii.hexlify(fpr).upper()
1103
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1883
1104
return hex_fpr
1884
1105
1885
1106
1886
class MultiprocessingMixIn(object):
1887
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1888
def sub_process_main(self, request, address):
1889
try:
1890
self.finish_request(request, address)
1891
except Exception:
1892
self.handle_error(request, address)
1893
self.close_request(request)
1894
1895
def process_request(self, request, address):
1896
"""Start a new process to process the request."""
1897
proc = multiprocessing.Process(target = self.sub_process_main,
1898
args = (request, address))
1899
proc.start()
1900
return proc
1901
1902
1903
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1904
""" adds a pipe to the MixIn """
1107
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1108
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1905
1109
def process_request(self, request, client_address):
1906
1110
"""Overrides and wraps the original process_request().
1907
1111
1908
1112
This function creates a new pipe in self.pipe
1909
1113
"""
1910
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1911
1912
proc = MultiprocessingMixIn.process_request(self, request,
1913
client_address)
1914
self.child_pipe.close()
1915
self.add_pipe(parent_pipe, proc)
1916
1917
def add_pipe(self, parent_pipe, proc):
1114
self.pipe = os.pipe()
1115
super(ForkingMixInWithPipe,
1116
self).process_request(request, client_address)
1117
os.close(self.pipe[1]) # close write end
1118
self.add_pipe(self.pipe[0])
1119
def add_pipe(self, pipe):
1918
1120
"""Dummy function; override as necessary"""
1919
raise NotImplementedError()
1920
1921
1922
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1121
os.close(pipe)
1122
1123
1124
class IPv6_TCPServer(ForkingMixInWithPipe,
1923
1125
socketserver.TCPServer, object):
1924
1126
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1925
1127
1929
1131
use_ipv6: Boolean; to use IPv6 or not
1930
1132
"""
1931
1133
def __init__(self, server_address, RequestHandlerClass,
1932
interface=None, use_ipv6=True, socketfd=None):
1933
"""If socketfd is set, use that file descriptor instead of
1934
creating a new one with socket.socket().
1935
"""
1134
interface=None, use_ipv6=True):
1936
1135
self.interface = interface
1937
1136
if use_ipv6:
1938
1137
self.address_family = socket.AF_INET6
1939
if socketfd is not None:
1940
# Save the file descriptor
1941
self.socketfd = socketfd
1942
# Save the original socket.socket() function
1943
self.socket_socket = socket.socket
1944
# To implement --socket, we monkey patch socket.socket.
1945
#
1946
# (When socketserver.TCPServer is a new-style class, we
1947
# could make self.socket into a property instead of monkey
1948
# patching socket.socket.)
1949
#
1950
# Create a one-time-only replacement for socket.socket()
1951
@functools.wraps(socket.socket)
1952
def socket_wrapper(*args, **kwargs):
1953
# Restore original function so subsequent calls are
1954
# not affected.
1955
socket.socket = self.socket_socket
1956
del self.socket_socket
1957
# This time only, return a new socket object from the
1958
# saved file descriptor.
1959
return socket.fromfd(self.socketfd, *args, **kwargs)
1960
# Replace socket.socket() function with wrapper
1961
socket.socket = socket_wrapper
1962
# The socketserver.TCPServer.__init__ will call
1963
# socket.socket(), which might be our replacement,
1964
# socket_wrapper(), if socketfd was set.
1965
1138
socketserver.TCPServer.__init__(self, server_address,
1966
1139
RequestHandlerClass)
1967
1968
1140
def server_bind(self):
1969
1141
"""This overrides the normal server_bind() function
1970
1142
to bind to an interface if one was specified, and also NOT to
1971
1143
bind to an address or port if they were not specified."""
1972
1144
if self.interface is not None:
1973
1145
if SO_BINDTODEVICE is None:
1974
logger.error("SO_BINDTODEVICE does not exist;"
1975
" cannot bind to interface %s",
1146
logger.error(u"SO_BINDTODEVICE does not exist;"
1147
u" cannot bind to interface %s",
1976
1148
self.interface)
1977
1149
else:
1978
1150
try:
1979
1151
self.socket.setsockopt(socket.SOL_SOCKET,
1980
1152
SO_BINDTODEVICE,
1981
str(self.interface + '\0'))
1982
except socket.error as error:
1983
if error.errno == errno.EPERM:
1984
logger.error("No permission to bind to"
1985
" interface %s", self.interface)
1986
elif error.errno == errno.ENOPROTOOPT:
1987
logger.error("SO_BINDTODEVICE not available;"
1988
" cannot bind to interface %s",
1989
self.interface)
1990
elif error.errno == errno.ENODEV:
1991
logger.error("Interface %s does not exist,"
1992
" cannot bind", self.interface)
1153
str(self.interface
1154
+ u'\0'))
1155
except socket.error, error:
1156
if error[0] == errno.EPERM:
1157
logger.error(u"No permission to"
1158
u" bind to interface %s",
1159
self.interface)
1160
elif error[0] == errno.ENOPROTOOPT:
1161
logger.error(u"SO_BINDTODEVICE not available;"
1162
u" cannot bind to interface %s",
1163
self.interface)
1993
1164
else:
1994
1165
raise
1995
1166
# Only bind(2) the socket if we really need to.
1996
1167
if self.server_address[0] or self.server_address[1]:
1997
1168
if not self.server_address[0]:
1998
1169
if self.address_family == socket.AF_INET6:
1999
any_address = "::" # in6addr_any
1170
any_address = u"::" # in6addr_any
2000
1171
else:
2001
any_address = "0.0.0.0" # INADDR_ANY
1172
any_address = socket.INADDR_ANY
2002
1173
self.server_address = (any_address,
2003
1174
self.server_address[1])
2004
1175
elif not self.server_address[1]:
2025
1196
"""
2026
1197
def __init__(self, server_address, RequestHandlerClass,
2027
1198
interface=None, use_ipv6=True, clients=None,
2028
gnutls_priority=None, use_dbus=True, socketfd=None):
1199
gnutls_priority=None, use_dbus=True):
2029
1200
self.enabled = False
2030
1201
self.clients = clients
2031
1202
if self.clients is None:
2032
self.clients = {}
1203
self.clients = set()
2033
1204
self.use_dbus = use_dbus
2034
1205
self.gnutls_priority = gnutls_priority
2035
1206
IPv6_TCPServer.__init__(self, server_address,
2036
1207
RequestHandlerClass,
2037
1208
interface = interface,
2038
use_ipv6 = use_ipv6,
2039
socketfd = socketfd)
1209
use_ipv6 = use_ipv6)
2040
1210
def server_activate(self):
2041
1211
if self.enabled:
2042
1212
return socketserver.TCPServer.server_activate(self)
2043
2044
1213
def enable(self):
2045
1214
self.enabled = True
2046
2047
def add_pipe(self, parent_pipe, proc):
1215
def add_pipe(self, pipe):
2048
1216
# Call "handle_ipc" for both data and EOF events
2049
gobject.io_add_watch(parent_pipe.fileno(),
2050
gobject.IO_IN | gobject.IO_HUP,
2051
functools.partial(self.handle_ipc,
2052
parent_pipe =
2053
parent_pipe,
2054
proc = proc))
2055
2056
def handle_ipc(self, source, condition, parent_pipe=None,
2057
proc = None, client_object=None):
2058
# error, or the other end of multiprocessing.Pipe has closed
2059
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2060
# Wait for other process to exit
2061
proc.join()
2062
return False
2063
2064
# Read a request from the child
2065
request = parent_pipe.recv()
2066
command = request[0]
2067
2068
if command == 'init':
2069
fpr = request[1]
2070
address = request[2]
2071
2072
for c in self.clients.itervalues():
2073
if c.fingerprint == fpr:
2074
client = c
2075
break
2076
else:
2077
logger.info("Client not found for fingerprint: %s, ad"
2078
"dress: %s", fpr, address)
2079
if self.use_dbus:
2080
# Emit D-Bus signal
2081
mandos_dbus_service.ClientNotFound(fpr,
2082
address[0])
2083
parent_pipe.send(False)
2084
return False
2085
2086
gobject.io_add_watch(parent_pipe.fileno(),
2087
gobject.IO_IN | gobject.IO_HUP,
2088
functools.partial(self.handle_ipc,
2089
parent_pipe =
2090
parent_pipe,
2091
proc = proc,
2092
client_object =
2093
client))
2094
parent_pipe.send(True)
2095
# remove the old hook in favor of the new above hook on
2096
# same fileno
2097
return False
2098
if command == 'funcall':
2099
funcname = request[1]
2100
args = request[2]
2101
kwargs = request[3]
2102
2103
parent_pipe.send(('data', getattr(client_object,
2104
funcname)(*args,
2105
**kwargs)))
2106
2107
if command == 'getattr':
2108
attrname = request[1]
2109
if callable(client_object.__getattribute__(attrname)):
2110
parent_pipe.send(('function',))
2111
else:
2112
parent_pipe.send(('data', client_object
2113
.__getattribute__(attrname)))
2114
2115
if command == 'setattr':
2116
attrname = request[1]
2117
value = request[2]
2118
setattr(client_object, attrname, value)
2119
1217
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1218
self.handle_ipc)
1219
def handle_ipc(self, source, condition, file_objects={}):
1220
condition_names = {
1221
gobject.IO_IN: u"IN", # There is data to read.
1222
gobject.IO_OUT: u"OUT", # Data can be written (without
1223
# blocking).
1224
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1225
gobject.IO_ERR: u"ERR", # Error condition.
1226
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1227
# broken, usually for pipes and
1228
# sockets).
1229
}
1230
conditions_string = ' | '.join(name
1231
for cond, name in
1232
condition_names.iteritems()
1233
if cond & condition)
1234
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1235
conditions_string)
1236
1237
# Turn the pipe file descriptor into a Python file object
1238
if source not in file_objects:
1239
file_objects[source] = os.fdopen(source, u"r", 1)
1240
1241
# Read a line from the file object
1242
cmdline = file_objects[source].readline()
1243
if not cmdline: # Empty line means end of file
1244
# close the IPC pipe
1245
file_objects[source].close()
1246
del file_objects[source]
1247
1248
# Stop calling this function
1249
return False
1250
1251
logger.debug(u"IPC command: %r", cmdline)
1252
1253
# Parse and act on command
1254
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1255
1256
if cmd == u"NOTFOUND":
1257
logger.warning(u"Client not found for fingerprint: %s",
1258
args)
1259
if self.use_dbus:
1260
# Emit D-Bus signal
1261
mandos_dbus_service.ClientNotFound(args)
1262
elif cmd == u"INVALID":
1263
for client in self.clients:
1264
if client.name == args:
1265
logger.warning(u"Client %s is invalid", args)
1266
if self.use_dbus:
1267
# Emit D-Bus signal
1268
client.Rejected()
1269
break
1270
else:
1271
logger.error(u"Unknown client %s is invalid", args)
1272
elif cmd == u"SENDING":
1273
for client in self.clients:
1274
if client.name == args:
1275
logger.info(u"Sending secret to %s", client.name)
1276
client.checked_ok()
1277
if self.use_dbus:
1278
# Emit D-Bus signal
1279
client.ReceivedSecret()
1280
break
1281
else:
1282
logger.error(u"Sending secret to unknown client %s",
1283
args)
1284
else:
1285
logger.error(u"Unknown IPC command: %r", cmdline)
1286
1287
# Keep calling this function
2120
1288
return True
2121
1289
2122
1290
2123
def rfc3339_duration_to_delta(duration):
2124
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2125
2126
>>> rfc3339_duration_to_delta("P7D")
2127
datetime.timedelta(7)
2128
>>> rfc3339_duration_to_delta("PT60S")
2129
datetime.timedelta(0, 60)
2130
>>> rfc3339_duration_to_delta("PT60M")
2131
datetime.timedelta(0, 3600)
2132
>>> rfc3339_duration_to_delta("PT24H")
2133
datetime.timedelta(1)
2134
>>> rfc3339_duration_to_delta("P1W")
2135
datetime.timedelta(7)
2136
>>> rfc3339_duration_to_delta("PT5M30S")
2137
datetime.timedelta(0, 330)
2138
>>> rfc3339_duration_to_delta("P1DT3M20S")
2139
datetime.timedelta(1, 200)
2140
"""
2141
2142
# Parsing an RFC 3339 duration with regular expressions is not
2143
# possible - there would have to be multiple places for the same
2144
# values, like seconds. The current code, while more esoteric, is
2145
# cleaner without depending on a parsing library. If Python had a
2146
# built-in library for parsing we would use it, but we'd like to
2147
# avoid excessive use of external libraries.
2148
2149
# New type for defining tokens, syntax, and semantics all-in-one
2150
Token = collections.namedtuple("Token",
2151
("regexp", # To match token; if
2152
# "value" is not None,
2153
# must have a "group"
2154
# containing digits
2155
"value", # datetime.timedelta or
2156
# None
2157
"followers")) # Tokens valid after
2158
# this token
2159
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2160
# the "duration" ABNF definition in RFC 3339, Appendix A.
2161
token_end = Token(re.compile(r"$"), None, frozenset())
2162
token_second = Token(re.compile(r"(\d+)S"),
2163
datetime.timedelta(seconds=1),
2164
frozenset((token_end,)))
2165
token_minute = Token(re.compile(r"(\d+)M"),
2166
datetime.timedelta(minutes=1),
2167
frozenset((token_second, token_end)))
2168
token_hour = Token(re.compile(r"(\d+)H"),
2169
datetime.timedelta(hours=1),
2170
frozenset((token_minute, token_end)))
2171
token_time = Token(re.compile(r"T"),
2172
None,
2173
frozenset((token_hour, token_minute,
2174
token_second)))
2175
token_day = Token(re.compile(r"(\d+)D"),
2176
datetime.timedelta(days=1),
2177
frozenset((token_time, token_end)))
2178
token_month = Token(re.compile(r"(\d+)M"),
2179
datetime.timedelta(weeks=4),
2180
frozenset((token_day, token_end)))
2181
token_year = Token(re.compile(r"(\d+)Y"),
2182
datetime.timedelta(weeks=52),
2183
frozenset((token_month, token_end)))
2184
token_week = Token(re.compile(r"(\d+)W"),
2185
datetime.timedelta(weeks=1),
2186
frozenset((token_end,)))
2187
token_duration = Token(re.compile(r"P"), None,
2188
frozenset((token_year, token_month,
2189
token_day, token_time,
2190
token_week))),
2191
# Define starting values
2192
value = datetime.timedelta() # Value so far
2193
found_token = None
2194
followers = frozenset(token_duration,) # Following valid tokens
2195
s = duration # String left to parse
2196
# Loop until end token is found
2197
while found_token is not token_end:
2198
# Search for any currently valid tokens
2199
for token in followers:
2200
match = token.regexp.match(s)
2201
if match is not None:
2202
# Token found
2203
if token.value is not None:
2204
# Value found, parse digits
2205
factor = int(match.group(1), 10)
2206
# Add to value so far
2207
value += factor * token.value
2208
# Strip token from string
2209
s = token.regexp.sub("", s, 1)
2210
# Go to found token
2211
found_token = token
2212
# Set valid next tokens
2213
followers = found_token.followers
2214
break
2215
else:
2216
# No currently valid tokens were found
2217
raise ValueError("Invalid RFC 3339 duration")
2218
# End token found
2219
return value
2220
2221
2222
1291
def string_to_delta(interval):
2223
1292
"""Parse a string and return a datetime.timedelta
2224
1293
2225
>>> string_to_delta('7d')
1294
>>> string_to_delta(u'7d')
2226
1295
datetime.timedelta(7)
2227
>>> string_to_delta('60s')
1296
>>> string_to_delta(u'60s')
2228
1297
datetime.timedelta(0, 60)
2229
>>> string_to_delta('60m')
1298
>>> string_to_delta(u'60m')
2230
1299
datetime.timedelta(0, 3600)
2231
>>> string_to_delta('24h')
1300
>>> string_to_delta(u'24h')
2232
1301
datetime.timedelta(1)
2233
>>> string_to_delta('1w')
1302
>>> string_to_delta(u'1w')
2234
1303
datetime.timedelta(7)
2235
>>> string_to_delta('5m 30s')
1304
>>> string_to_delta(u'5m 30s')
2236
1305
datetime.timedelta(0, 330)
2237
1306
"""
2238
2239
try:
2240
return rfc3339_duration_to_delta(interval)
2241
except ValueError:
2242
pass
2243
2244
1307
timevalue = datetime.timedelta(0)
2245
1308
for s in interval.split():
2246
1309
try:
2247
1310
suffix = unicode(s[-1])
2248
1311
value = int(s[:-1])
2249
if suffix == "d":
1312
if suffix == u"d":
2250
1313
delta = datetime.timedelta(value)
2251
elif suffix == "s":
1314
elif suffix == u"s":
2252
1315
delta = datetime.timedelta(0, value)
2253
elif suffix == "m":
1316
elif suffix == u"m":
2254
1317
delta = datetime.timedelta(0, 0, 0, 0, value)
2255
elif suffix == "h":
1318
elif suffix == u"h":
2256
1319
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2257
elif suffix == "w":
1320
elif suffix == u"w":
2258
1321
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2259
1322
else:
2260
raise ValueError("Unknown suffix {0!r}"
2261
.format(suffix))
2262
except IndexError as e:
2263
raise ValueError(*(e.args))
1323
raise ValueError
1324
except (ValueError, IndexError):
1325
raise ValueError
2264
1326
timevalue += delta
2265
1327
return timevalue
2266
1328
2267
1329
1330
def if_nametoindex(interface):
1331
"""Call the C function if_nametoindex(), or equivalent
1332
1333
Note: This function cannot accept a unicode string."""
1334
global if_nametoindex
1335
try:
1336
if_nametoindex = (ctypes.cdll.LoadLibrary
1337
(ctypes.util.find_library(u"c"))
1338
.if_nametoindex)
1339
except (OSError, AttributeError):
1340
logger.warning(u"Doing if_nametoindex the hard way")
1341
def if_nametoindex(interface):
1342
"Get an interface index the hard way, i.e. using fcntl()"
1343
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1344
with closing(socket.socket()) as s:
1345
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1346
struct.pack(str(u"16s16x"),
1347
interface))
1348
interface_index = struct.unpack(str(u"I"),
1349
ifreq[16:20])[0]
1350
return interface_index
1351
return if_nametoindex(interface)
1352
1353
2268
1354
def daemon(nochdir = False, noclose = False):
2269
1355
"""See daemon(3). Standard BSD Unix function.
2270
1356
2273
1359
sys.exit()
2274
1360
os.setsid()
2275
1361
if not nochdir:
2276
os.chdir("/")
1362
os.chdir(u"/")
2277
1363
if os.fork():
2278
1364
sys.exit()
2279
1365
if not noclose:
2280
1366
# Close all standard open file descriptors
2281
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1367
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2282
1368
if not stat.S_ISCHR(os.fstat(null).st_mode):
2283
1369
raise OSError(errno.ENODEV,
2284
"{0} not a character device"
2285
.format(os.devnull))
1370
u"/dev/null not a character device")
2286
1371
os.dup2(null, sys.stdin.fileno())
2287
1372
os.dup2(null, sys.stdout.fileno())
2288
1373
os.dup2(null, sys.stderr.fileno())
2295
1380
##################################################################
2296
1381
# Parsing of options, both command line and config file
2297
1382
2298
parser = argparse.ArgumentParser()
2299
parser.add_argument("-v", "--version", action="version",
2300
version = "%(prog)s {0}".format(version),
2301
help="show version number and exit")
2302
parser.add_argument("-i", "--interface", metavar="IF",
2303
help="Bind to interface IF")
2304
parser.add_argument("-a", "--address",
2305
help="Address to listen for requests on")
2306
parser.add_argument("-p", "--port", type=int,
2307
help="Port number to receive requests on")
2308
parser.add_argument("--check", action="store_true",
2309
help="Run self-test")
2310
parser.add_argument("--debug", action="store_true",
2311
help="Debug mode; run in foreground and log"
2312
" to terminal", default=None)
2313
parser.add_argument("--debuglevel", metavar="LEVEL",
2314
help="Debug level for stdout output")
2315
parser.add_argument("--priority", help="GnuTLS"
2316
" priority string (see GnuTLS documentation)")
2317
parser.add_argument("--servicename",
2318
metavar="NAME", help="Zeroconf service name")
2319
parser.add_argument("--configdir",
2320
default="/etc/mandos", metavar="DIR",
2321
help="Directory to search for configuration"
2322
" files")
2323
parser.add_argument("--no-dbus", action="store_false",
2324
dest="use_dbus", help="Do not provide D-Bus"
2325
" system bus interface", default=None)
2326
parser.add_argument("--no-ipv6", action="store_false",
2327
dest="use_ipv6", help="Do not use IPv6",
2328
default=None)
2329
parser.add_argument("--no-restore", action="store_false",
2330
dest="restore", help="Do not restore stored"
2331
" state", default=None)
2332
parser.add_argument("--socket", type=int,
2333
help="Specify a file descriptor to a network"
2334
" socket to use instead of creating one")
2335
parser.add_argument("--statedir", metavar="DIR",
2336
help="Directory to save/restore state in")
2337
parser.add_argument("--foreground", action="store_true",
2338
help="Run in foreground", default=None)
2339
2340
options = parser.parse_args()
1383
parser = optparse.OptionParser(version = "%%prog %s" % version)
1384
parser.add_option("-i", u"--interface", type=u"string",
1385
metavar="IF", help=u"Bind to interface IF")
1386
parser.add_option("-a", u"--address", type=u"string",
1387
help=u"Address to listen for requests on")
1388
parser.add_option("-p", u"--port", type=u"int",
1389
help=u"Port number to receive requests on")
1390
parser.add_option("--check", action=u"store_true",
1391
help=u"Run self-test")
1392
parser.add_option("--debug", action=u"store_true",
1393
help=u"Debug mode; run in foreground and log to"
1394
u" terminal")
1395
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1396
u" priority string (see GnuTLS documentation)")
1397
parser.add_option("--servicename", type=u"string",
1398
metavar=u"NAME", help=u"Zeroconf service name")
1399
parser.add_option("--configdir", type=u"string",
1400
default=u"/etc/mandos", metavar=u"DIR",
1401
help=u"Directory to search for configuration"
1402
u" files")
1403
parser.add_option("--no-dbus", action=u"store_false",
1404
dest=u"use_dbus", help=u"Do not provide D-Bus"
1405
u" system bus interface")
1406
parser.add_option("--no-ipv6", action=u"store_false",
1407
dest=u"use_ipv6", help=u"Do not use IPv6")
1408
options = parser.parse_args()[0]
2341
1409
2342
1410
if options.check:
2343
1411
import doctest
2345
1413
sys.exit()
2346
1414
2347
1415
# Default values for config file for server-global settings
2348
server_defaults = { "interface": "",
2349
"address": "",
2350
"port": "",
2351
"debug": "False",
2352
"priority":
2353
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2354
"servicename": "Mandos",
2355
"use_dbus": "True",
2356
"use_ipv6": "True",
2357
"debuglevel": "",
2358
"restore": "True",
2359
"socket": "",
2360
"statedir": "/var/lib/mandos",
2361
"foreground": "False",
1416
server_defaults = { u"interface": u"",
1417
u"address": u"",
1418
u"port": u"",
1419
u"debug": u"False",
1420
u"priority":
1421
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1422
u"servicename": u"Mandos",
1423
u"use_dbus": u"True",
1424
u"use_ipv6": u"True",
2362
1425
}
2363
1426
2364
1427
# Parse config file for server-global settings
2365
1428
server_config = configparser.SafeConfigParser(server_defaults)
2366
1429
del server_defaults
2367
1430
server_config.read(os.path.join(options.configdir,
2368
"mandos.conf"))
1431
u"mandos.conf"))
2369
1432
# Convert the SafeConfigParser object to a dict
2370
1433
server_settings = server_config.defaults()
2371
1434
# Use the appropriate methods on the non-string config options
2372
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2373
server_settings[option] = server_config.getboolean("DEFAULT",
1435
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1436
server_settings[option] = server_config.getboolean(u"DEFAULT",
2374
1437
option)
2375
1438
if server_settings["port"]:
2376
server_settings["port"] = server_config.getint("DEFAULT",
2377
"port")
2378
if server_settings["socket"]:
2379
server_settings["socket"] = server_config.getint("DEFAULT",
2380
"socket")
2381
# Later, stdin will, and stdout and stderr might, be dup'ed
2382
# over with an opened os.devnull. But we don't want this to
2383
# happen with a supplied network socket.
2384
if 0 <= server_settings["socket"] <= 2:
2385
server_settings["socket"] = os.dup(server_settings
2386
["socket"])
1439
server_settings["port"] = server_config.getint(u"DEFAULT",
1440
u"port")
2387
1441
del server_config
2388
1442
2389
1443
# Override the settings from the config file with command line
2390
1444
# options, if set.
2391
for option in ("interface", "address", "port", "debug",
2392
"priority", "servicename", "configdir",
2393
"use_dbus", "use_ipv6", "debuglevel", "restore",
2394
"statedir", "socket", "foreground"):
1445
for option in (u"interface", u"address", u"port", u"debug",
1446
u"priority", u"servicename", u"configdir",
1447
u"use_dbus", u"use_ipv6"):
2395
1448
value = getattr(options, option)
2396
1449
if value is not None:
2397
1450
server_settings[option] = value
2400
1453
for option in server_settings.keys():
2401
1454
if type(server_settings[option]) is str:
2402
1455
server_settings[option] = unicode(server_settings[option])
2403
# Force all boolean options to be boolean
2404
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2405
"foreground"):
2406
server_settings[option] = bool(server_settings[option])
2407
# Debug implies foreground
2408
if server_settings["debug"]:
2409
server_settings["foreground"] = True
2410
1456
# Now we have our good server settings in "server_settings"
2411
1457
2412
1458
##################################################################
2413
1459
2414
1460
# For convenience
2415
debug = server_settings["debug"]
2416
debuglevel = server_settings["debuglevel"]
2417
use_dbus = server_settings["use_dbus"]
2418
use_ipv6 = server_settings["use_ipv6"]
2419
stored_state_path = os.path.join(server_settings["statedir"],
2420
stored_state_file)
2421
foreground = server_settings["foreground"]
2422
2423
if debug:
2424
initlogger(debug, logging.DEBUG)
2425
else:
2426
if not debuglevel:
2427
initlogger(debug)
2428
else:
2429
level = getattr(logging, debuglevel.upper())
2430
initlogger(debug, level)
2431
2432
if server_settings["servicename"] != "Mandos":
1461
debug = server_settings[u"debug"]
1462
use_dbus = server_settings[u"use_dbus"]
1463
use_ipv6 = server_settings[u"use_ipv6"]
1464
1465
if not debug:
1466
syslogger.setLevel(logging.WARNING)
1467
console.setLevel(logging.WARNING)
1468
1469
if server_settings[u"servicename"] != u"Mandos":
2433
1470
syslogger.setFormatter(logging.Formatter
2434
('Mandos ({0}) [%(process)d]:'
2435
' %(levelname)s: %(message)s'
2436
.format(server_settings
2437
["servicename"])))
1471
(u'Mandos (%s) [%%(process)d]:'
1472
u' %%(levelname)s: %%(message)s'
1473
% server_settings[u"servicename"]))
2438
1474
2439
1475
# Parse config file with clients
2440
client_config = configparser.SafeConfigParser(Client
2441
.client_defaults)
2442
client_config.read(os.path.join(server_settings["configdir"],
2443
"clients.conf"))
1476
client_defaults = { u"timeout": u"1h",
1477
u"interval": u"5m",
1478
u"checker": u"fping -q -- %%(host)s",
1479
u"host": u"",
1480
}
1481
client_config = configparser.SafeConfigParser(client_defaults)
1482
client_config.read(os.path.join(server_settings[u"configdir"],
1483
u"clients.conf"))
2444
1484
2445
1485
global mandos_dbus_service
2446
1486
mandos_dbus_service = None
2447
1487
2448
tcp_server = MandosServer((server_settings["address"],
2449
server_settings["port"]),
1488
tcp_server = MandosServer((server_settings[u"address"],
1489
server_settings[u"port"]),
2450
1490
ClientHandler,
2451
interface=(server_settings["interface"]
2452
or None),
1491
interface=server_settings[u"interface"],
2453
1492
use_ipv6=use_ipv6,
2454
1493
gnutls_priority=
2455
server_settings["priority"],
2456
use_dbus=use_dbus,
2457
socketfd=(server_settings["socket"]
2458
or None))
2459
if not foreground:
2460
pidfilename = "/run/mandos.pid"
2461
if not os.path.isdir("/run/."):
2462
pidfilename = "/var/run/mandos.pid"
2463
pidfile = None
2464
try:
2465
pidfile = open(pidfilename, "w")
2466
except IOError as e:
2467
logger.error("Could not open file %r", pidfilename,
2468
exc_info=e)
1494
server_settings[u"priority"],
1495
use_dbus=use_dbus)
1496
pidfilename = u"/var/run/mandos.pid"
1497
try:
1498
pidfile = open(pidfilename, u"w")
1499
except IOError:
1500
logger.error(u"Could not open file %r", pidfilename)
2469
1501
2470
for name in ("_mandos", "mandos", "nobody"):
1502
try:
1503
uid = pwd.getpwnam(u"_mandos").pw_uid
1504
gid = pwd.getpwnam(u"_mandos").pw_gid
1505
except KeyError:
2471
1506
try:
2472
uid = pwd.getpwnam(name).pw_uid
2473
gid = pwd.getpwnam(name).pw_gid
2474
break
1507
uid = pwd.getpwnam(u"mandos").pw_uid
1508
gid = pwd.getpwnam(u"mandos").pw_gid
2475
1509
except KeyError:
2476
continue
2477
else:
2478
uid = 65534
2479
gid = 65534
1510
try:
1511
uid = pwd.getpwnam(u"nobody").pw_uid
1512
gid = pwd.getpwnam(u"nobody").pw_gid
1513
except KeyError:
1514
uid = 65534
1515
gid = 65534
2480
1516
try:
2481
1517
os.setgid(gid)
2482
1518
os.setuid(uid)
2483
except OSError as error:
2484
if error.errno != errno.EPERM:
2485
raise
1519
except OSError, error:
1520
if error[0] != errno.EPERM:
1521
raise error
2486
1522
1523
# Enable all possible GnuTLS debugging
2487
1524
if debug:
2488
# Enable all possible GnuTLS debugging
2489
2490
1525
# "Use a log level over 10 to enable all debugging options."
2491
1526
# - GnuTLS manual
2492
1527
gnutls.library.functions.gnutls_global_set_log_level(11)
2493
1528
2494
1529
@gnutls.library.types.gnutls_log_func
2495
1530
def debug_gnutls(level, string):
2496
logger.debug("GnuTLS: %s", string[:-1])
1531
logger.debug(u"GnuTLS: %s", string[:-1])
2497
1532
2498
1533
(gnutls.library.functions
2499
1534
.gnutls_global_set_log_function(debug_gnutls))
2500
2501
# Redirect stdin so all checkers get /dev/null
2502
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2503
os.dup2(null, sys.stdin.fileno())
2504
if null > 2:
2505
os.close(null)
2506
2507
# Need to fork before connecting to D-Bus
2508
if not foreground:
2509
# Close all input and output, do double fork, etc.
2510
daemon()
2511
2512
# multiprocessing will use threads, so before we use gobject we
2513
# need to inform gobject that threads will be used.
2514
gobject.threads_init()
2515
1535
2516
1536
global main_loop
2517
1537
# From the Avahi example code
2518
DBusGMainLoop(set_as_default=True)
1538
DBusGMainLoop(set_as_default=True )
2519
1539
main_loop = gobject.MainLoop()
2520
1540
bus = dbus.SystemBus()
2521
1541
# End of Avahi example code
2522
1542
if use_dbus:
2523
try:
2524
bus_name = dbus.service.BusName("se.recompile.Mandos",
2525
bus, do_not_queue=True)
2526
old_bus_name = (dbus.service.BusName
2527
("se.bsnet.fukt.Mandos", bus,
2528
do_not_queue=True))
2529
except dbus.exceptions.NameExistsException as e:
2530
logger.error("Disabling D-Bus:", exc_info=e)
2531
use_dbus = False
2532
server_settings["use_dbus"] = False
2533
tcp_server.use_dbus = False
1543
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2534
1544
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2535
service = AvahiServiceToSyslog(name =
2536
server_settings["servicename"],
2537
servicetype = "_mandos._tcp",
2538
protocol = protocol, bus = bus)
1545
service = AvahiService(name = server_settings[u"servicename"],
1546
servicetype = u"_mandos._tcp",
1547
protocol = protocol, bus = bus)
2539
1548
if server_settings["interface"]:
2540
1549
service.interface = (if_nametoindex
2541
(str(server_settings["interface"])))
2542
2543
global multiprocessing_manager
2544
multiprocessing_manager = multiprocessing.Manager()
1550
(str(server_settings[u"interface"])))
2545
1551
2546
1552
client_class = Client
2547
1553
if use_dbus:
2548
1554
client_class = functools.partial(ClientDBus, bus = bus)
2549
2550
client_settings = Client.config_parser(client_config)
2551
old_client_settings = {}
2552
clients_data = {}
2553
2554
# This is used to redirect stdout and stderr for checker processes
2555
global wnull
2556
wnull = open(os.devnull, "w") # A writable /dev/null
2557
# Only used if server is running in foreground but not in debug
2558
# mode
2559
if debug or not foreground:
2560
wnull.close()
2561
2562
# Get client data and settings from last running state.
2563
if server_settings["restore"]:
2564
try:
2565
with open(stored_state_path, "rb") as stored_state:
2566
clients_data, old_client_settings = (pickle.load
2567
(stored_state))
2568
os.remove(stored_state_path)
2569
except IOError as e:
2570
if e.errno == errno.ENOENT:
2571
logger.warning("Could not load persistent state: {0}"
2572
.format(os.strerror(e.errno)))
2573
else:
2574
logger.critical("Could not load persistent state:",
2575
exc_info=e)
2576
raise
2577
except EOFError as e:
2578
logger.warning("Could not load persistent state: "
2579
"EOFError:", exc_info=e)
2580
2581
with PGPEngine() as pgp:
2582
for client_name, client in clients_data.iteritems():
2583
# Skip removed clients
2584
if client_name not in client_settings:
2585
continue
2586
2587
# Decide which value to use after restoring saved state.
2588
# We have three different values: Old config file,
2589
# new config file, and saved state.
2590
# New config value takes precedence if it differs from old
2591
# config value, otherwise use saved state.
2592
for name, value in client_settings[client_name].items():
2593
try:
2594
# For each value in new config, check if it
2595
# differs from the old config value (Except for
2596
# the "secret" attribute)
2597
if (name != "secret" and
2598
value != old_client_settings[client_name]
2599
[name]):
2600
client[name] = value
2601
except KeyError:
2602
pass
2603
2604
# Clients who has passed its expire date can still be
2605
# enabled if its last checker was successful. Clients
2606
# whose checker succeeded before we stored its state is
2607
# assumed to have successfully run all checkers during
2608
# downtime.
2609
if client["enabled"]:
2610
if datetime.datetime.utcnow() >= client["expires"]:
2611
if not client["last_checked_ok"]:
2612
logger.warning(
2613
"disabling client {0} - Client never "
2614
"performed a successful checker"
2615
.format(client_name))
2616
client["enabled"] = False
2617
elif client["last_checker_status"] != 0:
2618
logger.warning(
2619
"disabling client {0} - Client "
2620
"last checker failed with error code {1}"
2621
.format(client_name,
2622
client["last_checker_status"]))
2623
client["enabled"] = False
2624
else:
2625
client["expires"] = (datetime.datetime
2626
.utcnow()
2627
+ client["timeout"])
2628
logger.debug("Last checker succeeded,"
2629
" keeping {0} enabled"
2630
.format(client_name))
2631
try:
2632
client["secret"] = (
2633
pgp.decrypt(client["encrypted_secret"],
2634
client_settings[client_name]
2635
["secret"]))
2636
except PGPError:
2637
# If decryption fails, we use secret from new settings
2638
logger.debug("Failed to decrypt {0} old secret"
2639
.format(client_name))
2640
client["secret"] = (
2641
client_settings[client_name]["secret"])
2642
2643
# Add/remove clients based on new changes made to config
2644
for client_name in (set(old_client_settings)
2645
- set(client_settings)):
2646
del clients_data[client_name]
2647
for client_name in (set(client_settings)
2648
- set(old_client_settings)):
2649
clients_data[client_name] = client_settings[client_name]
2650
2651
# Create all client objects
2652
for client_name, client in clients_data.iteritems():
2653
tcp_server.clients[client_name] = client_class(
2654
name = client_name, settings = client,
2655
server_settings = server_settings)
2656
1555
tcp_server.clients.update(set(
1556
client_class(name = section,
1557
config= dict(client_config.items(section)))
1558
for section in client_config.sections()))
2657
1559
if not tcp_server.clients:
2658
logger.warning("No clients defined")
2659
2660
if not foreground:
2661
if pidfile is not None:
2662
try:
2663
with pidfile:
2664
pid = os.getpid()
2665
pidfile.write(str(pid) + "\n".encode("utf-8"))
2666
except IOError:
2667
logger.error("Could not write to file %r with PID %d",
2668
pidfilename, pid)
1560
logger.warning(u"No clients defined")
1561
1562
if debug:
1563
# Redirect stdin so all checkers get /dev/null
1564
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1565
os.dup2(null, sys.stdin.fileno())
1566
if null > 2:
1567
os.close(null)
1568
else:
1569
# No console logging
1570
logger.removeHandler(console)
1571
# Close all input and output, do double fork, etc.
1572
daemon()
1573
1574
try:
1575
with closing(pidfile):
1576
pid = os.getpid()
1577
pidfile.write(str(pid) + "\n")
2669
1578
del pidfile
2670
del pidfilename
2671
1579
except IOError:
1580
logger.error(u"Could not write to file %r with PID %d",
1581
pidfilename, pid)
1582
except NameError:
1583
# "pidfile" was never created
1584
pass
1585
del pidfilename
1586
1587
def cleanup():
1588
"Cleanup function; run on exit"
1589
service.cleanup()
1590
1591
while tcp_server.clients:
1592
client = tcp_server.clients.pop()
1593
client.disable_hook = None
1594
client.disable()
1595
1596
atexit.register(cleanup)
1597
1598
if not debug:
1599
signal.signal(signal.SIGINT, signal.SIG_IGN)
2672
1600
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2673
1601
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2674
1602
2675
1603
if use_dbus:
2676
@alternate_dbus_interfaces({"se.recompile.Mandos":
2677
"se.bsnet.fukt.Mandos"})
2678
class MandosDBusService(DBusObjectWithProperties):
1604
class MandosDBusService(dbus.service.Object):
2679
1605
"""A D-Bus proxy object"""
2680
1606
def __init__(self):
2681
dbus.service.Object.__init__(self, bus, "/")
2682
_interface = "se.recompile.Mandos"
2683
2684
@dbus_interface_annotations(_interface)
2685
def _foo(self):
2686
return { "org.freedesktop.DBus.Property"
2687
".EmitsChangedSignal":
2688
"false"}
2689
2690
@dbus.service.signal(_interface, signature="o")
2691
def ClientAdded(self, objpath):
2692
"D-Bus signal"
2693
pass
2694
2695
@dbus.service.signal(_interface, signature="ss")
2696
def ClientNotFound(self, fingerprint, address):
2697
"D-Bus signal"
2698
pass
2699
2700
@dbus.service.signal(_interface, signature="os")
1607
dbus.service.Object.__init__(self, bus, u"/")
1608
_interface = u"se.bsnet.fukt.Mandos"
1609
1610
@dbus.service.signal(_interface, signature=u"oa{sv}")
1611
def ClientAdded(self, objpath, properties):
1612
"D-Bus signal"
1613
pass
1614
1615
@dbus.service.signal(_interface, signature=u"s")
1616
def ClientNotFound(self, fingerprint):
1617
"D-Bus signal"
1618
pass
1619
1620
@dbus.service.signal(_interface, signature=u"os")
2701
1621
def ClientRemoved(self, objpath, name):
2702
1622
"D-Bus signal"
2703
1623
pass
2704
1624
2705
@dbus.service.method(_interface, out_signature="ao")
1625
@dbus.service.method(_interface, out_signature=u"ao")
2706
1626
def GetAllClients(self):
2707
1627
"D-Bus method"
2708
1628
return dbus.Array(c.dbus_object_path
2709
for c in
2710
tcp_server.clients.itervalues())
1629
for c in tcp_server.clients)
2711
1630
2712
1631
@dbus.service.method(_interface,
2713
out_signature="a{oa{sv}}")
1632
out_signature=u"a{oa{sv}}")
2714
1633
def GetAllClientsWithProperties(self):
2715
1634
"D-Bus method"
2716
1635
return dbus.Dictionary(
2717
((c.dbus_object_path, c.GetAll(""))
2718
for c in tcp_server.clients.itervalues()),
2719
signature="oa{sv}")
1636
((c.dbus_object_path, c.GetAll(u""))
1637
for c in tcp_server.clients),
1638
signature=u"oa{sv}")
2720
1639
2721
@dbus.service.method(_interface, in_signature="o")
1640
@dbus.service.method(_interface, in_signature=u"o")
2722
1641
def RemoveClient(self, object_path):
2723
1642
"D-Bus method"
2724
for c in tcp_server.clients.itervalues():
1643
for c in tcp_server.clients:
2725
1644
if c.dbus_object_path == object_path:
2726
del tcp_server.clients[c.name]
1645
tcp_server.clients.remove(c)
2727
1646
c.remove_from_connection()
2728
1647
# Don't signal anything except ClientRemoved
2729
c.disable(quiet=True)
1648
c.disable(signal=False)
2730
1649
# Emit D-Bus signal
2731
1650
self.ClientRemoved(object_path, c.name)
2732
1651
return
2733
raise KeyError(object_path)
1652
raise KeyError
2734
1653
2735
1654
del _interface
2736
1655
2737
1656
mandos_dbus_service = MandosDBusService()
2738
1657
2739
def cleanup():
2740
"Cleanup function; run on exit"
2741
service.cleanup()
2742
2743
multiprocessing.active_children()
2744
wnull.close()
2745
if not (tcp_server.clients or client_settings):
2746
return
2747
2748
# Store client before exiting. Secrets are encrypted with key
2749
# based on what config file has. If config file is
2750
# removed/edited, old secret will thus be unrecovable.
2751
clients = {}
2752
with PGPEngine() as pgp:
2753
for client in tcp_server.clients.itervalues():
2754
key = client_settings[client.name]["secret"]
2755
client.encrypted_secret = pgp.encrypt(client.secret,
2756
key)
2757
client_dict = {}
2758
2759
# A list of attributes that can not be pickled
2760
# + secret.
2761
exclude = set(("bus", "changedstate", "secret",
2762
"checker", "server_settings"))
2763
for name, typ in (inspect.getmembers
2764
(dbus.service.Object)):
2765
exclude.add(name)
2766
2767
client_dict["encrypted_secret"] = (client
2768
.encrypted_secret)
2769
for attr in client.client_structure:
2770
if attr not in exclude:
2771
client_dict[attr] = getattr(client, attr)
2772
2773
clients[client.name] = client_dict
2774
del client_settings[client.name]["secret"]
2775
2776
try:
2777
with (tempfile.NamedTemporaryFile
2778
(mode='wb', suffix=".pickle", prefix='clients-',
2779
dir=os.path.dirname(stored_state_path),
2780
delete=False)) as stored_state:
2781
pickle.dump((clients, client_settings), stored_state)
2782
tempname=stored_state.name
2783
os.rename(tempname, stored_state_path)
2784
except (IOError, OSError) as e:
2785
if not debug:
2786
try:
2787
os.remove(tempname)
2788
except NameError:
2789
pass
2790
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2791
logger.warning("Could not save persistent state: {0}"
2792
.format(os.strerror(e.errno)))
2793
else:
2794
logger.warning("Could not save persistent state:",
2795
exc_info=e)
2796
raise
2797
2798
# Delete all clients, and settings from config
2799
while tcp_server.clients:
2800
name, client = tcp_server.clients.popitem()
2801
if use_dbus:
2802
client.remove_from_connection()
2803
# Don't signal anything except ClientRemoved
2804
client.disable(quiet=True)
2805
if use_dbus:
2806
# Emit D-Bus signal
2807
mandos_dbus_service.ClientRemoved(client
2808
.dbus_object_path,
2809
client.name)
2810
client_settings.clear()
2811
2812
atexit.register(cleanup)
2813
2814
for client in tcp_server.clients.itervalues():
1658
for client in tcp_server.clients:
2815
1659
if use_dbus:
2816
1660
# Emit D-Bus signal
2817
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2818
# Need to initiate checking of clients
2819
if client.enabled:
2820
client.init_checker()
1661
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1662
client.GetAll(u""))
1663
client.enable()
2821
1664
2822
1665
tcp_server.enable()
2823
1666
tcp_server.server_activate()
2825
1668
# Find out what port we got
2826
1669
service.port = tcp_server.socket.getsockname()[1]
2827
1670
if use_ipv6:
2828
logger.info("Now listening on address %r, port %d,"
2829
" flowinfo %d, scope_id %d",
2830
*tcp_server.socket.getsockname())
1671
logger.info(u"Now listening on address %r, port %d,"
1672
" flowinfo %d, scope_id %d"
1673
% tcp_server.socket.getsockname())
2831
1674
else: # IPv4
2832
logger.info("Now listening on address %r, port %d",
2833
*tcp_server.socket.getsockname())
1675
logger.info(u"Now listening on address %r, port %d"
1676
% tcp_server.socket.getsockname())
2834
1677
2835
1678
#service.interface = tcp_server.socket.getsockname()[3]
2836
1679
2838
1681
# From the Avahi example code
2839
1682
try:
2840
1683
service.activate()
2841
except dbus.exceptions.DBusException as error:
2842
logger.critical("D-Bus Exception", exc_info=error)
2843
cleanup()
1684
except dbus.exceptions.DBusException, error:
1685
logger.critical(u"DBusException: %s", error)
2844
1686
sys.exit(1)
2845
1687
# End of Avahi example code
2846
1688
2849
1691
(tcp_server.handle_request
2850
1692
(*args[2:], **kwargs) or True))
2851
1693
2852
logger.debug("Starting main loop")
1694
logger.debug(u"Starting main loop")
2853
1695
main_loop.run()
2854
except AvahiError as error:
2855
logger.critical("Avahi Error", exc_info=error)
2856
cleanup()
1696
except AvahiError, error:
1697
logger.critical(u"AvahiError: %s", error)
2857
1698
sys.exit(1)
2858
1699
except KeyboardInterrupt:
2859
1700
if debug:
2860
print("", file=sys.stderr)
2861
logger.debug("Server received KeyboardInterrupt")
2862
logger.debug("Server exiting")
2863
# Must run before the D-Bus bus name gets deregistered
2864
cleanup()
1701
print >> sys.stderr
1702
logger.debug(u"Server received KeyboardInterrupt")
1703
logger.debug(u"Server exiting")
2865
1704
2866
1705
if __name__ == '__main__':
2867
1706
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0