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- Committer: Teddy Hogeborn
- Date: 2011-09-26 19:36:18 UTC
- mfrom: (24.1.184 mandos)
- Revision ID: teddy@fukt.bsnet.se-20110926193618-vtj5c9hena1maixx
Merge from Björn
- files removed:
- debian/mandos-client.examples
- debian/upstream
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python2.7
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#!/usr/bin/python
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# -*- mode: python; coding: utf-8 -*-
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#
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# Mandos server - give out binary blobs to connecting clients.
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# "AvahiService" class, and some lines in "main".
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#
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# Everything else is
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# Copyright © 2008-2014 Teddy Hogeborn
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# Copyright © 2008-2014 Björn Påhlsson
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 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,
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unicode_literals)
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from future_builtins import *
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import SocketServer as socketserver
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import socket
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import argparse
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import functools
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import cPickle as pickle
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import multiprocessing
67
import types
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import binascii
69
import tempfile
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import itertools
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import collections
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65
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import dbus
74
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import dbus.service
88
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except ImportError:
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SO_BINDTODEVICE = None
90
83
91
version = "1.6.7"
92
stored_state_file = "clients.pickle"
93
94
logger = logging.getLogger()
95
syslogger = None
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97
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
101
except (OSError, AttributeError):
102
def if_nametoindex(interface):
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"Get an interface index the hard way, i.e. using fcntl()"
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
with contextlib.closing(socket.socket()) as s:
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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
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interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
111
return interface_index
112
113
114
def initlogger(debug, level=logging.WARNING):
115
"""init logger and add loglevel"""
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117
global syslogger
118
syslogger = (logging.handlers.SysLogHandler
119
(facility =
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logging.handlers.SysLogHandler.LOG_DAEMON,
121
address = str("/dev/log")))
122
syslogger.setFormatter(logging.Formatter
123
('Mandos [%(process)d]: %(levelname)s:'
124
' %(message)s'))
125
logger.addHandler(syslogger)
126
127
if debug:
128
console = logging.StreamHandler()
129
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
130
' [%(process)d]:'
131
' %(levelname)s:'
132
' %(message)s'))
133
logger.addHandler(console)
134
logger.setLevel(level)
135
136
137
class PGPError(Exception):
138
"""Exception if encryption/decryption fails"""
139
pass
140
141
142
class PGPEngine(object):
143
"""A simple class for OpenPGP symmetric encryption & decryption"""
144
def __init__(self):
145
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
146
self.gnupgargs = ['--batch',
147
'--home', self.tempdir,
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'--force-mdc',
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'--quiet',
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'--no-use-agent']
151
152
def __enter__(self):
153
return self
154
155
def __exit__(self, exc_type, exc_value, traceback):
156
self._cleanup()
157
return False
158
159
def __del__(self):
160
self._cleanup()
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def _cleanup(self):
163
if self.tempdir is not None:
164
# Delete contents of tempdir
165
for root, dirs, files in os.walk(self.tempdir,
166
topdown = False):
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for filename in files:
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os.remove(os.path.join(root, filename))
169
for dirname in dirs:
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os.rmdir(os.path.join(root, dirname))
171
# Remove tempdir
172
os.rmdir(self.tempdir)
173
self.tempdir = None
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def password_encode(self, password):
176
# Passphrase can not be empty and can not contain newlines or
177
# NUL bytes. So we prefix it and hex encode it.
178
encoded = b"mandos" + binascii.hexlify(password)
179
if len(encoded) > 2048:
180
# GnuPG can't handle long passwords, so encode differently
181
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
182
.replace(b"\n", b"\\n")
183
.replace(b"\0", b"\\x00"))
184
return encoded
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def encrypt(self, data, password):
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passphrase = self.password_encode(password)
188
with tempfile.NamedTemporaryFile(dir=self.tempdir
189
) as passfile:
190
passfile.write(passphrase)
191
passfile.flush()
192
proc = subprocess.Popen(['gpg', '--symmetric',
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'--passphrase-file',
194
passfile.name]
195
+ self.gnupgargs,
196
stdin = subprocess.PIPE,
197
stdout = subprocess.PIPE,
198
stderr = subprocess.PIPE)
199
ciphertext, err = proc.communicate(input = data)
200
if proc.returncode != 0:
201
raise PGPError(err)
202
return ciphertext
203
204
def decrypt(self, data, password):
205
passphrase = self.password_encode(password)
206
with tempfile.NamedTemporaryFile(dir = self.tempdir
207
) as passfile:
208
passfile.write(passphrase)
209
passfile.flush()
210
proc = subprocess.Popen(['gpg', '--decrypt',
211
'--passphrase-file',
212
passfile.name]
213
+ self.gnupgargs,
214
stdin = subprocess.PIPE,
215
stdout = subprocess.PIPE,
216
stderr = subprocess.PIPE)
217
decrypted_plaintext, err = proc.communicate(input
218
= data)
219
if proc.returncode != 0:
220
raise PGPError(err)
221
return decrypted_plaintext
222
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version = "1.3.1"
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#logger = logging.getLogger('mandos')
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logger = logging.Logger('mandos')
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syslogger = (logging.handlers.SysLogHandler
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = str("/dev/log")))
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syslogger.setFormatter(logging.Formatter
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('Mandos [%(process)d]: %(levelname)s:'
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' %(message)s'))
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logger.addHandler(syslogger)
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
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' %(levelname)s:'
100
' %(message)s'))
101
logger.addHandler(console)
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102
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class AvahiError(Exception):
225
104
def __init__(self, value, *args, **kwargs):
243
122
Used to optionally bind to the specified interface.
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123
name: string; Example: 'Mandos'
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type: string; Example: '_mandos._tcp'.
246
See <https://www.iana.org/assignments/service-names-port-numbers>
125
See <http://www.dns-sd.org/ServiceTypes.html>
247
126
port: integer; what port to announce
248
127
TXT: list of strings; TXT record for the service
249
128
domain: string; Domain to publish on, default to .local if empty.
255
134
server: D-Bus Server
256
135
bus: dbus.SystemBus()
257
136
"""
258
259
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
260
138
servicetype = None, port = None, TXT = None,
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domain = "", host = "", max_renames = 32768,
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152
self.server = None
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153
self.bus = bus
276
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self.entry_group_state_changed_match = None
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def rename(self):
279
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"""Derived from the Avahi example code"""
280
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if self.rename_count >= self.max_renames:
282
159
" after %i retries, exiting.",
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self.rename_count)
284
161
raise AvahiServiceError("Too many renames")
285
self.name = unicode(self.server
286
.GetAlternativeServiceName(self.name))
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
287
163
logger.info("Changing Zeroconf service name to %r ...",
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164
self.name)
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syslogger.setFormatter(logging.Formatter
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('Mandos (%s) [%%(process)d]:'
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' %%(levelname)s: %%(message)s'
168
% self.name))
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169
self.remove()
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170
try:
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self.add()
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except dbus.exceptions.DBusException as error:
293
logger.critical("D-Bus Exception", exc_info=error)
173
logger.critical("DBusException: %s", error)
294
174
self.cleanup()
295
175
os._exit(1)
296
176
self.rename_count += 1
297
298
177
def remove(self):
299
178
"""Derived from the Avahi example code"""
300
179
if self.entry_group_state_changed_match is not None:
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181
self.entry_group_state_changed_match = None
303
182
if self.group is not None:
304
183
self.group.Reset()
305
306
184
def add(self):
307
185
"""Derived from the Avahi example code"""
308
186
self.remove()
313
191
avahi.DBUS_INTERFACE_ENTRY_GROUP)
314
192
self.entry_group_state_changed_match = (
315
193
self.group.connect_to_signal(
316
'StateChanged', self.entry_group_state_changed))
194
'StateChanged', self .entry_group_state_changed))
317
195
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
318
196
self.name, self.type)
319
197
self.group.AddService(
325
203
dbus.UInt16(self.port),
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204
avahi.string_array_to_txt_array(self.TXT))
327
205
self.group.Commit()
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329
206
def entry_group_state_changed(self, state, error):
330
207
"""Derived from the Avahi example code"""
331
208
logger.debug("Avahi entry group state change: %i", state)
338
215
elif state == avahi.ENTRY_GROUP_FAILURE:
339
216
logger.critical("Avahi: Error in group state changed %s",
340
217
unicode(error))
341
raise AvahiGroupError("State changed: {!s}"
342
.format(error))
343
218
raise AvahiGroupError("State changed: %s"
219
% unicode(error))
344
220
def cleanup(self):
345
221
"""Derived from the Avahi example code"""
346
222
if self.group is not None:
347
223
try:
348
224
self.group.Free()
349
225
except (dbus.exceptions.UnknownMethodException,
350
dbus.exceptions.DBusException):
226
dbus.exceptions.DBusException) as e:
351
227
pass
352
228
self.group = None
353
229
self.remove()
354
355
230
def server_state_changed(self, state, error=None):
356
231
"""Derived from the Avahi example code"""
357
232
logger.debug("Avahi server state change: %i", state)
376
251
logger.debug("Unknown state: %r", state)
377
252
else:
378
253
logger.debug("Unknown state: %r: %r", state, error)
379
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254
def activate(self):
381
255
"""Derived from the Avahi example code"""
382
256
if self.server is None:
390
264
self.server_state_changed(self.server.GetState())
391
265
392
266
393
class AvahiServiceToSyslog(AvahiService):
394
def rename(self):
395
"""Add the new name to the syslog messages"""
396
ret = AvahiService.rename(self)
397
syslogger.setFormatter(logging.Formatter
398
('Mandos ({}) [%(process)d]:'
399
' %(levelname)s: %(message)s'
400
.format(self.name)))
401
return ret
402
403
267
def _timedelta_to_milliseconds(td):
268
"Convert a datetime.timedelta() to milliseconds"
269
return ((td.days * 24 * 60 * 60 * 1000)
270
+ (td.seconds * 1000)
271
+ (td.microseconds // 1000))
272
404
273
class Client(object):
405
274
"""A representation of a client host served by this server.
406
275
407
276
Attributes:
408
approved: bool(); 'None' if not yet approved/disapproved
277
_approved: bool(); 'None' if not yet approved/disapproved
409
278
approval_delay: datetime.timedelta(); Time to wait for approval
410
279
approval_duration: datetime.timedelta(); Duration of one approval
411
280
checker: subprocess.Popen(); a running checker process used
418
287
instance %(name)s can be used in the command.
419
288
checker_initiator_tag: a gobject event source tag, or None
420
289
created: datetime.datetime(); (UTC) object creation
421
client_structure: Object describing what attributes a client has
422
and is used for storing the client at exit
423
290
current_checker_command: string; current running checker_command
291
disable_hook: If set, called by disable() as disable_hook(self)
424
292
disable_initiator_tag: a gobject event source tag, or None
425
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enabled: bool()
426
294
fingerprint: string (40 or 32 hexadecimal digits); used to
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297
interval: datetime.timedelta(); How often to start a new checker
430
298
last_approval_request: datetime.datetime(); (UTC) or None
431
299
last_checked_ok: datetime.datetime(); (UTC) or None
432
last_checker_status: integer between 0 and 255 reflecting exit
433
status of last checker. -1 reflects crashed
434
checker, -2 means no checker completed yet.
435
last_enabled: datetime.datetime(); (UTC) or None
300
last_enabled: datetime.datetime(); (UTC)
436
301
name: string; from the config file, used in log messages and
437
302
D-Bus identifiers
438
303
secret: bytestring; sent verbatim (over TLS) to client
439
304
timeout: datetime.timedelta(); How long from last_checked_ok
440
305
until this client is disabled
441
extended_timeout: extra long timeout when secret has been sent
306
extended_timeout: extra long timeout when password has been sent
442
307
runtime_expansions: Allowed attributes for runtime expansion.
443
308
expires: datetime.datetime(); time (UTC) when a client will be
444
309
disabled, or None
445
server_settings: The server_settings dict from main()
446
310
"""
447
311
448
312
runtime_expansions = ("approval_delay", "approval_duration",
449
"created", "enabled", "expires",
450
"fingerprint", "host", "interval",
451
"last_approval_request", "last_checked_ok",
313
"created", "enabled", "fingerprint",
314
"host", "interval", "last_checked_ok",
452
315
"last_enabled", "name", "timeout")
453
client_defaults = { "timeout": "PT5M",
454
"extended_timeout": "PT15M",
455
"interval": "PT2M",
456
"checker": "fping -q -- %%(host)s",
457
"host": "",
458
"approval_delay": "PT0S",
459
"approval_duration": "PT1S",
460
"approved_by_default": "True",
461
"enabled": "True",
462
}
463
464
@staticmethod
465
def config_parser(config):
466
"""Construct a new dict of client settings of this form:
467
{ client_name: {setting_name: value, ...}, ...}
468
with exceptions for any special settings as defined above.
469
NOTE: Must be a pure function. Must return the same result
470
value given the same arguments.
471
"""
472
settings = {}
473
for client_name in config.sections():
474
section = dict(config.items(client_name))
475
client = settings[client_name] = {}
476
477
client["host"] = section["host"]
478
# Reformat values from string types to Python types
479
client["approved_by_default"] = config.getboolean(
480
client_name, "approved_by_default")
481
client["enabled"] = config.getboolean(client_name,
482
"enabled")
483
484
client["fingerprint"] = (section["fingerprint"].upper()
485
.replace(" ", ""))
486
if "secret" in section:
487
client["secret"] = section["secret"].decode("base64")
488
elif "secfile" in section:
489
with open(os.path.expanduser(os.path.expandvars
490
(section["secfile"])),
491
"rb") as secfile:
492
client["secret"] = secfile.read()
493
else:
494
raise TypeError("No secret or secfile for section {}"
495
.format(section))
496
client["timeout"] = string_to_delta(section["timeout"])
497
client["extended_timeout"] = string_to_delta(
498
section["extended_timeout"])
499
client["interval"] = string_to_delta(section["interval"])
500
client["approval_delay"] = string_to_delta(
501
section["approval_delay"])
502
client["approval_duration"] = string_to_delta(
503
section["approval_duration"])
504
client["checker_command"] = section["checker"]
505
client["last_approval_request"] = None
506
client["last_checked_ok"] = None
507
client["last_checker_status"] = -2
508
316
509
return settings
510
511
def __init__(self, settings, name = None, server_settings=None):
317
def timeout_milliseconds(self):
318
"Return the 'timeout' attribute in milliseconds"
319
return _timedelta_to_milliseconds(self.timeout)
320
321
def extended_timeout_milliseconds(self):
322
"Return the 'extended_timeout' attribute in milliseconds"
323
return _timedelta_to_milliseconds(self.extended_timeout)
324
325
def interval_milliseconds(self):
326
"Return the 'interval' attribute in milliseconds"
327
return _timedelta_to_milliseconds(self.interval)
328
329
def approval_delay_milliseconds(self):
330
return _timedelta_to_milliseconds(self.approval_delay)
331
332
def __init__(self, name = None, disable_hook=None, config=None):
333
"""Note: the 'checker' key in 'config' sets the
334
'checker_command' attribute and *not* the 'checker'
335
attribute."""
512
336
self.name = name
513
if server_settings is None:
514
server_settings = {}
515
self.server_settings = server_settings
516
# adding all client settings
517
for setting, value in settings.items():
518
setattr(self, setting, value)
519
520
if self.enabled:
521
if not hasattr(self, "last_enabled"):
522
self.last_enabled = datetime.datetime.utcnow()
523
if not hasattr(self, "expires"):
524
self.expires = (datetime.datetime.utcnow()
525
+ self.timeout)
526
else:
527
self.last_enabled = None
528
self.expires = None
529
337
if config is None:
338
config = {}
530
339
logger.debug("Creating client %r", self.name)
531
340
# Uppercase and remove spaces from fingerprint for later
532
341
# comparison purposes with return value from the fingerprint()
533
342
# function
343
self.fingerprint = (config["fingerprint"].upper()
344
.replace(" ", ""))
534
345
logger.debug(" Fingerprint: %s", self.fingerprint)
535
self.created = settings.get("created",
536
datetime.datetime.utcnow())
537
538
# attributes specific for this server instance
346
if "secret" in config:
347
self.secret = config["secret"].decode("base64")
348
elif "secfile" in config:
349
with open(os.path.expanduser(os.path.expandvars
350
(config["secfile"])),
351
"rb") as secfile:
352
self.secret = secfile.read()
353
else:
354
raise TypeError("No secret or secfile for client %s"
355
% self.name)
356
self.host = config.get("host", "")
357
self.created = datetime.datetime.utcnow()
358
self.enabled = False
359
self.last_approval_request = None
360
self.last_enabled = None
361
self.last_checked_ok = None
362
self.timeout = string_to_delta(config["timeout"])
363
self.extended_timeout = string_to_delta(config["extended_timeout"])
364
self.interval = string_to_delta(config["interval"])
365
self.disable_hook = disable_hook
539
366
self.checker = None
540
367
self.checker_initiator_tag = None
541
368
self.disable_initiator_tag = None
369
self.expires = None
542
370
self.checker_callback_tag = None
371
self.checker_command = config["checker"]
543
372
self.current_checker_command = None
544
self.approved = None
373
self.last_connect = None
374
self._approved = None
375
self.approved_by_default = config.get("approved_by_default",
376
True)
545
377
self.approvals_pending = 0
546
self.changedstate = (multiprocessing_manager
547
.Condition(multiprocessing_manager
548
.Lock()))
549
self.client_structure = [attr for attr in
550
self.__dict__.iterkeys()
551
if not attr.startswith("_")]
552
self.client_structure.append("client_structure")
553
554
for name, t in inspect.getmembers(type(self),
555
lambda obj:
556
isinstance(obj,
557
property)):
558
if not name.startswith("_"):
559
self.client_structure.append(name)
378
self.approval_delay = string_to_delta(
379
config["approval_delay"])
380
self.approval_duration = string_to_delta(
381
config["approval_duration"])
382
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
560
383
561
# Send notice to process children that client state has changed
562
384
def send_changedstate(self):
563
with self.changedstate:
564
self.changedstate.notify_all()
565
385
self.changedstate.acquire()
386
self.changedstate.notify_all()
387
self.changedstate.release()
388
566
389
def enable(self):
567
390
"""Start this client's checker and timeout hooks"""
568
391
if getattr(self, "enabled", False):
569
392
# Already enabled
570
393
return
394
self.send_changedstate()
395
# Schedule a new checker to be started an 'interval' from now,
396
# and every interval from then on.
397
self.checker_initiator_tag = (gobject.timeout_add
398
(self.interval_milliseconds(),
399
self.start_checker))
400
# Schedule a disable() when 'timeout' has passed
571
401
self.expires = datetime.datetime.utcnow() + self.timeout
402
self.disable_initiator_tag = (gobject.timeout_add
403
(self.timeout_milliseconds(),
404
self.disable))
572
405
self.enabled = True
573
406
self.last_enabled = datetime.datetime.utcnow()
574
self.init_checker()
575
self.send_changedstate()
407
# Also start a new checker *right now*.
408
self.start_checker()
576
409
577
410
def disable(self, quiet=True):
578
411
"""Disable this client."""
579
412
if not getattr(self, "enabled", False):
580
413
return False
581
414
if not quiet:
415
self.send_changedstate()
416
if not quiet:
582
417
logger.info("Disabling client %s", self.name)
583
if getattr(self, "disable_initiator_tag", None) is not None:
418
if getattr(self, "disable_initiator_tag", False):
584
419
gobject.source_remove(self.disable_initiator_tag)
585
420
self.disable_initiator_tag = None
586
421
self.expires = None
587
if getattr(self, "checker_initiator_tag", None) is not None:
422
if getattr(self, "checker_initiator_tag", False):
588
423
gobject.source_remove(self.checker_initiator_tag)
589
424
self.checker_initiator_tag = None
590
425
self.stop_checker()
426
if self.disable_hook:
427
self.disable_hook(self)
591
428
self.enabled = False
592
if not quiet:
593
self.send_changedstate()
594
429
# Do not run this again if called by a gobject.timeout_add
595
430
return False
596
431
597
432
def __del__(self):
433
self.disable_hook = None
598
434
self.disable()
599
435
600
def init_checker(self):
601
# Schedule a new checker to be started an 'interval' from now,
602
# and every interval from then on.
603
if self.checker_initiator_tag is not None:
604
gobject.source_remove(self.checker_initiator_tag)
605
self.checker_initiator_tag = (gobject.timeout_add
606
(int(self.interval
607
.total_seconds() * 1000),
608
self.start_checker))
609
# Schedule a disable() when 'timeout' has passed
610
if self.disable_initiator_tag is not None:
611
gobject.source_remove(self.disable_initiator_tag)
612
self.disable_initiator_tag = (gobject.timeout_add
613
(int(self.timeout
614
.total_seconds() * 1000),
615
self.disable))
616
# Also start a new checker *right now*.
617
self.start_checker()
618
619
436
def checker_callback(self, pid, condition, command):
620
437
"""The checker has completed, so take appropriate actions."""
621
438
self.checker_callback_tag = None
622
439
self.checker = None
623
440
if os.WIFEXITED(condition):
624
self.last_checker_status = os.WEXITSTATUS(condition)
625
if self.last_checker_status == 0:
441
exitstatus = os.WEXITSTATUS(condition)
442
if exitstatus == 0:
626
443
logger.info("Checker for %(name)s succeeded",
627
444
vars(self))
628
445
self.checked_ok()
630
447
logger.info("Checker for %(name)s failed",
631
448
vars(self))
632
449
else:
633
self.last_checker_status = -1
634
450
logger.warning("Checker for %(name)s crashed?",
635
451
vars(self))
636
452
637
def checked_ok(self):
638
"""Assert that the client has been seen, alive and well."""
639
self.last_checked_ok = datetime.datetime.utcnow()
640
self.last_checker_status = 0
641
self.bump_timeout()
642
643
def bump_timeout(self, timeout=None):
644
"""Bump up the timeout for this client."""
453
def checked_ok(self, timeout=None):
454
"""Bump up the timeout for this client.
455
456
This should only be called when the client has been seen,
457
alive and well.
458
"""
645
459
if timeout is None:
646
460
timeout = self.timeout
647
if self.disable_initiator_tag is not None:
648
gobject.source_remove(self.disable_initiator_tag)
649
self.disable_initiator_tag = None
650
if getattr(self, "enabled", False):
651
self.disable_initiator_tag = (gobject.timeout_add
652
(int(timeout.total_seconds()
653
* 1000), self.disable))
654
self.expires = datetime.datetime.utcnow() + timeout
461
self.last_checked_ok = datetime.datetime.utcnow()
462
gobject.source_remove(self.disable_initiator_tag)
463
self.expires = datetime.datetime.utcnow() + timeout
464
self.disable_initiator_tag = (gobject.timeout_add
465
(_timedelta_to_milliseconds(timeout),
466
self.disable))
655
467
656
468
def need_approval(self):
657
469
self.last_approval_request = datetime.datetime.utcnow()
662
474
If a checker already exists, leave it running and do
663
475
nothing."""
664
476
# The reason for not killing a running checker is that if we
665
# did that, and if a checker (for some reason) started running
666
# slowly and taking more than 'interval' time, then the client
667
# would inevitably timeout, since no checker would get a
668
# chance to run to completion. If we instead leave running
477
# did that, then if a checker (for some reason) started
478
# running slowly and taking more than 'interval' time, the
479
# client would inevitably timeout, since no checker would get
480
# a chance to run to completion. If we instead leave running
669
481
# checkers alone, the checker would have to take more time
670
482
# than 'timeout' for the client to be disabled, which is as it
671
483
# should be.
673
485
# If a checker exists, make sure it is not a zombie
674
486
try:
675
487
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
676
except AttributeError:
677
pass
678
except OSError as error:
679
if error.errno != errno.ECHILD:
680
raise
488
except (AttributeError, OSError) as error:
489
if (isinstance(error, OSError)
490
and error.errno != errno.ECHILD):
491
raise error
681
492
else:
682
493
if pid:
683
494
logger.warning("Checker was a zombie")
686
497
self.current_checker_command)
687
498
# Start a new checker if needed
688
499
if self.checker is None:
689
# Escape attributes for the shell
690
escaped_attrs = { attr:
691
re.escape(unicode(getattr(self,
692
attr)))
693
for attr in self.runtime_expansions }
694
500
try:
695
command = self.checker_command % escaped_attrs
696
except TypeError as error:
697
logger.error('Could not format string "%s"',
698
self.checker_command, exc_info=error)
699
return True # Try again later
501
# In case checker_command has exactly one % operator
502
command = self.checker_command % self.host
503
except TypeError:
504
# Escape attributes for the shell
505
escaped_attrs = dict(
506
(attr,
507
re.escape(unicode(str(getattr(self, attr, "")),
508
errors=
509
'replace')))
510
for attr in
511
self.runtime_expansions)
512
513
try:
514
command = self.checker_command % escaped_attrs
515
except TypeError as error:
516
logger.error('Could not format string "%s":'
517
' %s', self.checker_command, error)
518
return True # Try again later
700
519
self.current_checker_command = command
701
520
try:
702
521
logger.info("Starting checker %r for %s",
705
524
# in normal mode, that is already done by daemon(),
706
525
# and in debug mode we don't want to. (Stdin is
707
526
# always replaced by /dev/null.)
708
# The exception is when not debugging but nevertheless
709
# running in the foreground; use the previously
710
# created wnull.
711
popen_args = {}
712
if (not self.server_settings["debug"]
713
and self.server_settings["foreground"]):
714
popen_args.update({"stdout": wnull,
715
"stderr": wnull })
716
527
self.checker = subprocess.Popen(command,
717
528
close_fds=True,
718
shell=True, cwd="/",
719
**popen_args)
720
except OSError as error:
721
logger.error("Failed to start subprocess",
722
exc_info=error)
723
return True
724
self.checker_callback_tag = (gobject.child_watch_add
725
(self.checker.pid,
726
self.checker_callback,
727
data=command))
728
# The checker may have completed before the gobject
729
# watch was added. Check for this.
730
try:
529
shell=True, cwd="/")
530
self.checker_callback_tag = (gobject.child_watch_add
531
(self.checker.pid,
532
self.checker_callback,
533
data=command))
534
# The checker may have completed before the gobject
535
# watch was added. Check for this.
731
536
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
537
if pid:
538
gobject.source_remove(self.checker_callback_tag)
539
self.checker_callback(pid, status, command)
732
540
except OSError as error:
733
if error.errno == errno.ECHILD:
734
# This should never happen
735
logger.error("Child process vanished",
736
exc_info=error)
737
return True
738
raise
739
if pid:
740
gobject.source_remove(self.checker_callback_tag)
741
self.checker_callback(pid, status, command)
541
logger.error("Failed to start subprocess: %s",
542
error)
742
543
# Re-run this periodically if run by gobject.timeout_add
743
544
return True
744
545
751
552
return
752
553
logger.debug("Stopping checker for %(name)s", vars(self))
753
554
try:
754
self.checker.terminate()
555
os.kill(self.checker.pid, signal.SIGTERM)
755
556
#time.sleep(0.5)
756
557
#if self.checker.poll() is None:
757
# self.checker.kill()
558
# os.kill(self.checker.pid, signal.SIGKILL)
758
559
except OSError as error:
759
560
if error.errno != errno.ESRCH: # No such process
760
561
raise
761
562
self.checker = None
762
563
763
764
564
def dbus_service_property(dbus_interface, signature="v",
765
565
access="readwrite", byte_arrays=False):
766
566
"""Decorators for marking methods of a DBusObjectWithProperties to
777
577
# "Set" method, so we fail early here:
778
578
if byte_arrays and signature != "ay":
779
579
raise ValueError("Byte arrays not supported for non-'ay'"
780
" signature {!r}".format(signature))
580
" signature %r" % signature)
781
581
def decorator(func):
782
582
func._dbus_is_property = True
783
583
func._dbus_interface = dbus_interface
791
591
return decorator
792
592
793
593
794
def dbus_interface_annotations(dbus_interface):
795
"""Decorator for marking functions returning interface annotations
796
797
Usage:
798
799
@dbus_interface_annotations("org.example.Interface")
800
def _foo(self): # Function name does not matter
801
return {"org.freedesktop.DBus.Deprecated": "true",
802
"org.freedesktop.DBus.Property.EmitsChangedSignal":
803
"false"}
804
"""
805
def decorator(func):
806
func._dbus_is_interface = True
807
func._dbus_interface = dbus_interface
808
func._dbus_name = dbus_interface
809
return func
810
return decorator
811
812
813
def dbus_annotations(annotations):
814
"""Decorator to annotate D-Bus methods, signals or properties
815
Usage:
816
817
@dbus_service_property("org.example.Interface", signature="b",
818
access="r")
819
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
820
"org.freedesktop.DBus.Property."
821
"EmitsChangedSignal": "false"})
822
def Property_dbus_property(self):
823
return dbus.Boolean(False)
824
"""
825
def decorator(func):
826
func._dbus_annotations = annotations
827
return func
828
return decorator
829
830
831
594
class DBusPropertyException(dbus.exceptions.DBusException):
832
595
"""A base class for D-Bus property-related exceptions
833
596
"""
849
612
850
613
class DBusObjectWithProperties(dbus.service.Object):
851
614
"""A D-Bus object with properties.
852
615
853
616
Classes inheriting from this can use the dbus_service_property
854
617
decorator to expose methods as D-Bus properties. It exposes the
855
618
standard Get(), Set(), and GetAll() methods on the D-Bus.
856
619
"""
857
620
858
621
@staticmethod
859
def _is_dbus_thing(thing):
860
"""Returns a function testing if an attribute is a D-Bus thing
861
862
If called like _is_dbus_thing("method") it returns a function
863
suitable for use as predicate to inspect.getmembers().
864
"""
865
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
866
False)
622
def _is_dbus_property(obj):
623
return getattr(obj, "_dbus_is_property", False)
867
624
868
def _get_all_dbus_things(self, thing):
625
def _get_all_dbus_properties(self):
869
626
"""Returns a generator of (name, attribute) pairs
870
627
"""
871
return ((getattr(athing.__get__(self), "_dbus_name",
872
name),
873
athing.__get__(self))
874
for cls in self.__class__.__mro__
875
for name, athing in
876
inspect.getmembers(cls,
877
self._is_dbus_thing(thing)))
628
return ((prop._dbus_name, prop)
629
for name, prop in
630
inspect.getmembers(self, self._is_dbus_property))
878
631
879
632
def _get_dbus_property(self, interface_name, property_name):
880
633
"""Returns a bound method if one exists which is a D-Bus
881
634
property with the specified name and interface.
882
635
"""
883
for cls in self.__class__.__mro__:
884
for name, value in (inspect.getmembers
885
(cls,
886
self._is_dbus_thing("property"))):
887
if (value._dbus_name == property_name
888
and value._dbus_interface == interface_name):
889
return value.__get__(self)
890
636
for name in (property_name,
637
property_name + "_dbus_property"):
638
prop = getattr(self, name, None)
639
if (prop is None
640
or not self._is_dbus_property(prop)
641
or prop._dbus_name != property_name
642
or (interface_name and prop._dbus_interface
643
and interface_name != prop._dbus_interface)):
644
continue
645
return prop
891
646
# No such property
892
647
raise DBusPropertyNotFound(self.dbus_object_path + ":"
893
648
+ interface_name + "."
917
672
# The byte_arrays option is not supported yet on
918
673
# signatures other than "ay".
919
674
if prop._dbus_signature != "ay":
920
raise ValueError("Byte arrays not supported for non-"
921
"'ay' signature {!r}"
922
.format(prop._dbus_signature))
923
value = dbus.ByteArray(b''.join(chr(byte)
924
for byte in value))
675
raise ValueError
676
value = dbus.ByteArray(''.join(unichr(byte)
677
for byte in value))
925
678
prop(value)
926
679
927
680
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
929
682
def GetAll(self, interface_name):
930
683
"""Standard D-Bus property GetAll() method, see D-Bus
931
684
standard.
932
685
933
686
Note: Will not include properties with access="write".
934
687
"""
935
properties = {}
936
for name, prop in self._get_all_dbus_things("property"):
688
all = {}
689
for name, prop in self._get_all_dbus_properties():
937
690
if (interface_name
938
691
and interface_name != prop._dbus_interface):
939
692
# Interface non-empty but did not match
943
696
continue
944
697
value = prop()
945
698
if not hasattr(value, "variant_level"):
946
properties[name] = value
699
all[name] = value
947
700
continue
948
properties[name] = type(value)(value, variant_level=
949
value.variant_level+1)
950
return dbus.Dictionary(properties, signature="sv")
701
all[name] = type(value)(value, variant_level=
702
value.variant_level+1)
703
return dbus.Dictionary(all, signature="sv")
951
704
952
705
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
953
706
out_signature="s",
954
707
path_keyword='object_path',
955
708
connection_keyword='connection')
956
709
def Introspect(self, object_path, connection):
957
"""Overloading of standard D-Bus method.
958
959
Inserts property tags and interface annotation tags.
710
"""Standard D-Bus method, overloaded to insert property tags.
960
711
"""
961
712
xmlstring = dbus.service.Object.Introspect(self, object_path,
962
713
connection)
969
720
e.setAttribute("access", prop._dbus_access)
970
721
return e
971
722
for if_tag in document.getElementsByTagName("interface"):
972
# Add property tags
973
723
for tag in (make_tag(document, name, prop)
974
724
for name, prop
975
in self._get_all_dbus_things("property")
725
in self._get_all_dbus_properties()
976
726
if prop._dbus_interface
977
727
== if_tag.getAttribute("name")):
978
728
if_tag.appendChild(tag)
979
# Add annotation tags
980
for typ in ("method", "signal", "property"):
981
for tag in if_tag.getElementsByTagName(typ):
982
annots = dict()
983
for name, prop in (self.
984
_get_all_dbus_things(typ)):
985
if (name == tag.getAttribute("name")
986
and prop._dbus_interface
987
== if_tag.getAttribute("name")):
988
annots.update(getattr
989
(prop,
990
"_dbus_annotations",
991
{}))
992
for name, value in annots.items():
993
ann_tag = document.createElement(
994
"annotation")
995
ann_tag.setAttribute("name", name)
996
ann_tag.setAttribute("value", value)
997
tag.appendChild(ann_tag)
998
# Add interface annotation tags
999
for annotation, value in dict(
1000
itertools.chain.from_iterable(
1001
annotations().items()
1002
for name, annotations in
1003
self._get_all_dbus_things("interface")
1004
if name == if_tag.getAttribute("name")
1005
)).items():
1006
ann_tag = document.createElement("annotation")
1007
ann_tag.setAttribute("name", annotation)
1008
ann_tag.setAttribute("value", value)
1009
if_tag.appendChild(ann_tag)
1010
729
# Add the names to the return values for the
1011
730
# "org.freedesktop.DBus.Properties" methods
1012
731
if (if_tag.getAttribute("name")
1027
746
except (AttributeError, xml.dom.DOMException,
1028
747
xml.parsers.expat.ExpatError) as error:
1029
748
logger.error("Failed to override Introspection method",
1030
exc_info=error)
749
error)
1031
750
return xmlstring
1032
751
1033
752
1034
def datetime_to_dbus(dt, variant_level=0):
753
def datetime_to_dbus (dt, variant_level=0):
1035
754
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1036
755
if dt is None:
1037
756
return dbus.String("", variant_level = variant_level)
1038
757
return dbus.String(dt.isoformat(),
1039
758
variant_level=variant_level)
1040
759
1041
1042
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1043
"""A class decorator; applied to a subclass of
1044
dbus.service.Object, it will add alternate D-Bus attributes with
1045
interface names according to the "alt_interface_names" mapping.
1046
Usage:
1047
1048
@alternate_dbus_interfaces({"org.example.Interface":
1049
"net.example.AlternateInterface"})
1050
class SampleDBusObject(dbus.service.Object):
1051
@dbus.service.method("org.example.Interface")
1052
def SampleDBusMethod():
1053
pass
1054
1055
The above "SampleDBusMethod" on "SampleDBusObject" will be
1056
reachable via two interfaces: "org.example.Interface" and
1057
"net.example.AlternateInterface", the latter of which will have
1058
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1059
"true", unless "deprecate" is passed with a False value.
1060
1061
This works for methods and signals, and also for D-Bus properties
1062
(from DBusObjectWithProperties) and interfaces (from the
1063
dbus_interface_annotations decorator).
1064
"""
1065
def wrapper(cls):
1066
for orig_interface_name, alt_interface_name in (
1067
alt_interface_names.items()):
1068
attr = {}
1069
interface_names = set()
1070
# Go though all attributes of the class
1071
for attrname, attribute in inspect.getmembers(cls):
1072
# Ignore non-D-Bus attributes, and D-Bus attributes
1073
# with the wrong interface name
1074
if (not hasattr(attribute, "_dbus_interface")
1075
or not attribute._dbus_interface
1076
.startswith(orig_interface_name)):
1077
continue
1078
# Create an alternate D-Bus interface name based on
1079
# the current name
1080
alt_interface = (attribute._dbus_interface
1081
.replace(orig_interface_name,
1082
alt_interface_name))
1083
interface_names.add(alt_interface)
1084
# Is this a D-Bus signal?
1085
if getattr(attribute, "_dbus_is_signal", False):
1086
# Extract the original non-method undecorated
1087
# function by black magic
1088
nonmethod_func = (dict(
1089
zip(attribute.func_code.co_freevars,
1090
attribute.__closure__))["func"]
1091
.cell_contents)
1092
# Create a new, but exactly alike, function
1093
# object, and decorate it to be a new D-Bus signal
1094
# with the alternate D-Bus interface name
1095
new_function = (dbus.service.signal
1096
(alt_interface,
1097
attribute._dbus_signature)
1098
(types.FunctionType(
1099
nonmethod_func.func_code,
1100
nonmethod_func.func_globals,
1101
nonmethod_func.func_name,
1102
nonmethod_func.func_defaults,
1103
nonmethod_func.func_closure)))
1104
# Copy annotations, if any
1105
try:
1106
new_function._dbus_annotations = (
1107
dict(attribute._dbus_annotations))
1108
except AttributeError:
1109
pass
1110
# Define a creator of a function to call both the
1111
# original and alternate functions, so both the
1112
# original and alternate signals gets sent when
1113
# the function is called
1114
def fixscope(func1, func2):
1115
"""This function is a scope container to pass
1116
func1 and func2 to the "call_both" function
1117
outside of its arguments"""
1118
def call_both(*args, **kwargs):
1119
"""This function will emit two D-Bus
1120
signals by calling func1 and func2"""
1121
func1(*args, **kwargs)
1122
func2(*args, **kwargs)
1123
return call_both
1124
# Create the "call_both" function and add it to
1125
# the class
1126
attr[attrname] = fixscope(attribute, new_function)
1127
# Is this a D-Bus method?
1128
elif getattr(attribute, "_dbus_is_method", False):
1129
# Create a new, but exactly alike, function
1130
# object. Decorate it to be a new D-Bus method
1131
# with the alternate D-Bus interface name. Add it
1132
# to the class.
1133
attr[attrname] = (dbus.service.method
1134
(alt_interface,
1135
attribute._dbus_in_signature,
1136
attribute._dbus_out_signature)
1137
(types.FunctionType
1138
(attribute.func_code,
1139
attribute.func_globals,
1140
attribute.func_name,
1141
attribute.func_defaults,
1142
attribute.func_closure)))
1143
# Copy annotations, if any
1144
try:
1145
attr[attrname]._dbus_annotations = (
1146
dict(attribute._dbus_annotations))
1147
except AttributeError:
1148
pass
1149
# Is this a D-Bus property?
1150
elif getattr(attribute, "_dbus_is_property", False):
1151
# Create a new, but exactly alike, function
1152
# object, and decorate it to be a new D-Bus
1153
# property with the alternate D-Bus interface
1154
# name. Add it to the class.
1155
attr[attrname] = (dbus_service_property
1156
(alt_interface,
1157
attribute._dbus_signature,
1158
attribute._dbus_access,
1159
attribute
1160
._dbus_get_args_options
1161
["byte_arrays"])
1162
(types.FunctionType
1163
(attribute.func_code,
1164
attribute.func_globals,
1165
attribute.func_name,
1166
attribute.func_defaults,
1167
attribute.func_closure)))
1168
# Copy annotations, if any
1169
try:
1170
attr[attrname]._dbus_annotations = (
1171
dict(attribute._dbus_annotations))
1172
except AttributeError:
1173
pass
1174
# Is this a D-Bus interface?
1175
elif getattr(attribute, "_dbus_is_interface", False):
1176
# Create a new, but exactly alike, function
1177
# object. Decorate it to be a new D-Bus interface
1178
# with the alternate D-Bus interface name. Add it
1179
# to the class.
1180
attr[attrname] = (dbus_interface_annotations
1181
(alt_interface)
1182
(types.FunctionType
1183
(attribute.func_code,
1184
attribute.func_globals,
1185
attribute.func_name,
1186
attribute.func_defaults,
1187
attribute.func_closure)))
1188
if deprecate:
1189
# Deprecate all alternate interfaces
1190
iname="_AlternateDBusNames_interface_annotation{}"
1191
for interface_name in interface_names:
1192
@dbus_interface_annotations(interface_name)
1193
def func(self):
1194
return { "org.freedesktop.DBus.Deprecated":
1195
"true" }
1196
# Find an unused name
1197
for aname in (iname.format(i)
1198
for i in itertools.count()):
1199
if aname not in attr:
1200
attr[aname] = func
1201
break
1202
if interface_names:
1203
# Replace the class with a new subclass of it with
1204
# methods, signals, etc. as created above.
1205
cls = type(b"{}Alternate".format(cls.__name__),
1206
(cls,), attr)
1207
return cls
1208
return wrapper
1209
1210
1211
@alternate_dbus_interfaces({"se.recompile.Mandos":
1212
"se.bsnet.fukt.Mandos"})
1213
760
class ClientDBus(Client, DBusObjectWithProperties):
1214
761
"""A Client class using D-Bus
1215
762
1224
771
# dbus.service.Object doesn't use super(), so we can't either.
1225
772
1226
773
def __init__(self, bus = None, *args, **kwargs):
774
self._approvals_pending = 0
1227
775
self.bus = bus
1228
776
Client.__init__(self, *args, **kwargs)
1229
777
# Only now, when this client is initialized, can it show up on
1235
783
("/clients/" + client_object_name))
1236
784
DBusObjectWithProperties.__init__(self, self.bus,
1237
785
self.dbus_object_path)
1238
786
1239
787
def notifychangeproperty(transform_func,
1240
788
dbus_name, type_func=lambda x: x,
1241
789
variant_level=1):
1242
""" Modify a variable so that it's a property which announces
1243
its changes to DBus.
1244
1245
transform_fun: Function that takes a value and a variant_level
1246
and transforms it to a D-Bus type.
1247
dbus_name: D-Bus name of the variable
790
""" Modify a variable so that its a property that announce its
791
changes to DBus.
792
transform_fun: Function that takes a value and transform it to
793
DBus type.
794
dbus_name: DBus name of the variable
1248
795
type_func: Function that transform the value before sending it
1249
to the D-Bus. Default: no transform
1250
variant_level: D-Bus variant level. Default: 1
796
to DBus
797
variant_level: DBus variant level. default: 1
1251
798
"""
1252
attrname = "_{}".format(dbus_name)
799
real_value = [None,]
1253
800
def setter(self, value):
801
old_value = real_value[0]
802
real_value[0] = value
1254
803
if hasattr(self, "dbus_object_path"):
1255
if (not hasattr(self, attrname) or
1256
type_func(getattr(self, attrname, None))
1257
!= type_func(value)):
1258
dbus_value = transform_func(type_func(value),
1259
variant_level
1260
=variant_level)
804
if type_func(old_value) != type_func(real_value[0]):
805
dbus_value = transform_func(type_func(real_value[0]),
806
variant_level)
1261
807
self.PropertyChanged(dbus.String(dbus_name),
1262
808
dbus_value)
1263
setattr(self, attrname, value)
1264
1265
return property(lambda self: getattr(self, attrname), setter)
1266
809
810
return property(lambda self: real_value[0], setter)
811
812
1267
813
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1268
814
approvals_pending = notifychangeproperty(dbus.Boolean,
1269
815
"ApprovalPending",
1272
818
last_enabled = notifychangeproperty(datetime_to_dbus,
1273
819
"LastEnabled")
1274
820
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1275
type_func = lambda checker:
1276
checker is not None)
821
type_func = lambda checker: checker is not None)
1277
822
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1278
823
"LastCheckedOK")
1279
last_checker_status = notifychangeproperty(dbus.Int16,
1280
"LastCheckerStatus")
1281
last_approval_request = notifychangeproperty(
1282
datetime_to_dbus, "LastApprovalRequest")
824
last_approval_request = notifychangeproperty(datetime_to_dbus,
825
"LastApprovalRequest")
1283
826
approved_by_default = notifychangeproperty(dbus.Boolean,
1284
827
"ApprovedByDefault")
1285
approval_delay = notifychangeproperty(dbus.UInt64,
1286
"ApprovalDelay",
1287
type_func =
1288
lambda td: td.total_seconds()
1289
* 1000)
1290
approval_duration = notifychangeproperty(
1291
dbus.UInt64, "ApprovalDuration",
1292
type_func = lambda td: td.total_seconds() * 1000)
828
approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
829
type_func = _timedelta_to_milliseconds)
830
approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
831
type_func = _timedelta_to_milliseconds)
1293
832
host = notifychangeproperty(dbus.String, "Host")
1294
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1295
type_func = lambda td:
1296
td.total_seconds() * 1000)
1297
extended_timeout = notifychangeproperty(
1298
dbus.UInt64, "ExtendedTimeout",
1299
type_func = lambda td: td.total_seconds() * 1000)
1300
interval = notifychangeproperty(dbus.UInt64,
1301
"Interval",
1302
type_func =
1303
lambda td: td.total_seconds()
1304
* 1000)
833
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
834
type_func = _timedelta_to_milliseconds)
835
extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
836
type_func = _timedelta_to_milliseconds)
837
interval = notifychangeproperty(dbus.UInt16, "Interval",
838
type_func = _timedelta_to_milliseconds)
1305
839
checker_command = notifychangeproperty(dbus.String, "Checker")
1306
840
1307
841
del notifychangeproperty
1333
867
1334
868
return Client.checker_callback(self, pid, condition, command,
1335
869
*args, **kwargs)
1336
870
1337
871
def start_checker(self, *args, **kwargs):
1338
old_checker_pid = getattr(self.checker, "pid", None)
872
old_checker = self.checker
873
if self.checker is not None:
874
old_checker_pid = self.checker.pid
875
else:
876
old_checker_pid = None
1339
877
r = Client.start_checker(self, *args, **kwargs)
1340
878
# Only if new checker process was started
1341
879
if (self.checker is not None
1345
883
return r
1346
884
1347
885
def _reset_approved(self):
1348
self.approved = None
886
self._approved = None
1349
887
return False
1350
888
1351
889
def approve(self, value=True):
1352
self.approved = value
1353
gobject.timeout_add(int(self.approval_duration.total_seconds()
1354
* 1000), self._reset_approved)
1355
890
self.send_changedstate()
891
self._approved = value
892
gobject.timeout_add(_timedelta_to_milliseconds
893
(self.approval_duration),
894
self._reset_approved)
895
1356
896
1357
897
## D-Bus methods, signals & properties
1358
_interface = "se.recompile.Mandos.Client"
1359
1360
## Interfaces
1361
1362
@dbus_interface_annotations(_interface)
1363
def _foo(self):
1364
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1365
"false"}
898
_interface = "se.bsnet.fukt.Mandos.Client"
1366
899
1367
900
## Signals
1368
901
1460
993
access="readwrite")
1461
994
def ApprovalDelay_dbus_property(self, value=None):
1462
995
if value is None: # get
1463
return dbus.UInt64(self.approval_delay.total_seconds()
1464
* 1000)
996
return dbus.UInt64(self.approval_delay_milliseconds())
1465
997
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1466
998
1467
999
# ApprovalDuration - property
1469
1001
access="readwrite")
1470
1002
def ApprovalDuration_dbus_property(self, value=None):
1471
1003
if value is None: # get
1472
return dbus.UInt64(self.approval_duration.total_seconds()
1473
* 1000)
1004
return dbus.UInt64(_timedelta_to_milliseconds(
1005
self.approval_duration))
1474
1006
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1475
1007
1476
1008
# Name - property
1489
1021
def Host_dbus_property(self, value=None):
1490
1022
if value is None: # get
1491
1023
return dbus.String(self.host)
1492
self.host = unicode(value)
1024
self.host = value
1493
1025
1494
1026
# Created - property
1495
1027
@dbus_service_property(_interface, signature="s", access="read")
1496
1028
def Created_dbus_property(self):
1497
return datetime_to_dbus(self.created)
1029
return dbus.String(datetime_to_dbus(self.created))
1498
1030
1499
1031
# LastEnabled - property
1500
1032
@dbus_service_property(_interface, signature="s", access="read")
1521
1053
return
1522
1054
return datetime_to_dbus(self.last_checked_ok)
1523
1055
1524
# LastCheckerStatus - property
1525
@dbus_service_property(_interface, signature="n",
1526
access="read")
1527
def LastCheckerStatus_dbus_property(self):
1528
return dbus.Int16(self.last_checker_status)
1529
1530
1056
# Expires - property
1531
1057
@dbus_service_property(_interface, signature="s", access="read")
1532
1058
def Expires_dbus_property(self):
1542
1068
access="readwrite")
1543
1069
def Timeout_dbus_property(self, value=None):
1544
1070
if value is None: # get
1545
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1546
old_timeout = self.timeout
1071
return dbus.UInt64(self.timeout_milliseconds())
1547
1072
self.timeout = datetime.timedelta(0, 0, 0, value)
1548
# Reschedule disabling
1549
if self.enabled:
1550
now = datetime.datetime.utcnow()
1551
self.expires += self.timeout - old_timeout
1552
if self.expires <= now:
1553
# The timeout has passed
1554
self.disable()
1555
else:
1556
if (getattr(self, "disable_initiator_tag", None)
1557
is None):
1558
return
1559
gobject.source_remove(self.disable_initiator_tag)
1560
self.disable_initiator_tag = (
1561
gobject.timeout_add(
1562
int((self.expires - now).total_seconds()
1563
* 1000), self.disable))
1564
1073
if getattr(self, "disable_initiator_tag", None) is None:
1074
return
1075
# Reschedule timeout
1076
gobject.source_remove(self.disable_initiator_tag)
1077
self.disable_initiator_tag = None
1078
self.expires = None
1079
time_to_die = (self.
1080
_timedelta_to_milliseconds((self
1081
.last_checked_ok
1082
+ self.timeout)
1083
- datetime.datetime
1084
.utcnow()))
1085
if time_to_die <= 0:
1086
# The timeout has passed
1087
self.disable()
1088
else:
1089
self.expires = (datetime.datetime.utcnow()
1090
+ datetime.timedelta(milliseconds = time_to_die))
1091
self.disable_initiator_tag = (gobject.timeout_add
1092
(time_to_die, self.disable))
1093
1565
1094
# ExtendedTimeout - property
1566
1095
@dbus_service_property(_interface, signature="t",
1567
1096
access="readwrite")
1568
1097
def ExtendedTimeout_dbus_property(self, value=None):
1569
1098
if value is None: # get
1570
return dbus.UInt64(self.extended_timeout.total_seconds()
1571
* 1000)
1099
return dbus.UInt64(self.extended_timeout_milliseconds())
1572
1100
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1573
1101
1574
1102
# Interval - property
1575
1103
@dbus_service_property(_interface, signature="t",
1576
1104
access="readwrite")
1577
1105
def Interval_dbus_property(self, value=None):
1578
1106
if value is None: # get
1579
return dbus.UInt64(self.interval.total_seconds() * 1000)
1107
return dbus.UInt64(self.interval_milliseconds())
1580
1108
self.interval = datetime.timedelta(0, 0, 0, value)
1581
1109
if getattr(self, "checker_initiator_tag", None) is None:
1582
1110
return
1583
if self.enabled:
1584
# Reschedule checker run
1585
gobject.source_remove(self.checker_initiator_tag)
1586
self.checker_initiator_tag = (gobject.timeout_add
1587
(value, self.start_checker))
1588
self.start_checker() # Start one now, too
1589
1111
# Reschedule checker run
1112
gobject.source_remove(self.checker_initiator_tag)
1113
self.checker_initiator_tag = (gobject.timeout_add
1114
(value, self.start_checker))
1115
self.start_checker() # Start one now, too
1116
1590
1117
# Checker - property
1591
1118
@dbus_service_property(_interface, signature="s",
1592
1119
access="readwrite")
1593
1120
def Checker_dbus_property(self, value=None):
1594
1121
if value is None: # get
1595
1122
return dbus.String(self.checker_command)
1596
self.checker_command = unicode(value)
1123
self.checker_command = value
1597
1124
1598
1125
# CheckerRunning - property
1599
1126
@dbus_service_property(_interface, signature="b",
1626
1153
self._pipe.send(('init', fpr, address))
1627
1154
if not self._pipe.recv():
1628
1155
raise KeyError()
1629
1156
1630
1157
def __getattribute__(self, name):
1631
if name == '_pipe':
1158
if(name == '_pipe'):
1632
1159
return super(ProxyClient, self).__getattribute__(name)
1633
1160
self._pipe.send(('getattr', name))
1634
1161
data = self._pipe.recv()
1639
1166
self._pipe.send(('funcall', name, args, kwargs))
1640
1167
return self._pipe.recv()[1]
1641
1168
return func
1642
1169
1643
1170
def __setattr__(self, name, value):
1644
if name == '_pipe':
1171
if(name == '_pipe'):
1645
1172
return super(ProxyClient, self).__setattr__(name, value)
1646
1173
self._pipe.send(('setattr', name, value))
1647
1174
1658
1185
unicode(self.client_address))
1659
1186
logger.debug("Pipe FD: %d",
1660
1187
self.server.child_pipe.fileno())
1661
1188
1662
1189
session = (gnutls.connection
1663
1190
.ClientSession(self.request,
1664
1191
gnutls.connection
1665
1192
.X509Credentials()))
1666
1193
1667
1194
# Note: gnutls.connection.X509Credentials is really a
1668
1195
# generic GnuTLS certificate credentials object so long as
1669
1196
# no X.509 keys are added to it. Therefore, we can use it
1670
1197
# here despite using OpenPGP certificates.
1671
1198
1672
1199
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1673
1200
# "+AES-256-CBC", "+SHA1",
1674
1201
# "+COMP-NULL", "+CTYPE-OPENPGP",
1680
1207
(gnutls.library.functions
1681
1208
.gnutls_priority_set_direct(session._c_object,
1682
1209
priority, None))
1683
1210
1684
1211
# Start communication using the Mandos protocol
1685
1212
# Get protocol number
1686
1213
line = self.request.makefile().readline()
1687
1214
logger.debug("Protocol version: %r", line)
1688
1215
try:
1689
1216
if int(line.strip().split()[0]) > 1:
1690
raise RuntimeError(line)
1217
raise RuntimeError
1691
1218
except (ValueError, IndexError, RuntimeError) as error:
1692
1219
logger.error("Unknown protocol version: %s", error)
1693
1220
return
1694
1221
1695
1222
# Start GnuTLS connection
1696
1223
try:
1697
1224
session.handshake()
1701
1228
# established. Just abandon the request.
1702
1229
return
1703
1230
logger.debug("Handshake succeeded")
1704
1231
1705
1232
approval_required = False
1706
1233
try:
1707
1234
try:
1712
1239
logger.warning("Bad certificate: %s", error)
1713
1240
return
1714
1241
logger.debug("Fingerprint: %s", fpr)
1715
1242
1716
1243
try:
1717
1244
client = ProxyClient(child_pipe, fpr,
1718
1245
self.client_address)
1730
1257
client.name)
1731
1258
if self.server.use_dbus:
1732
1259
# Emit D-Bus signal
1733
client.Rejected("Disabled")
1260
client.Rejected("Disabled")
1734
1261
return
1735
1262
1736
if client.approved or not client.approval_delay:
1263
if client._approved or not client.approval_delay:
1737
1264
#We are approved or approval is disabled
1738
1265
break
1739
elif client.approved is None:
1266
elif client._approved is None:
1740
1267
logger.info("Client %s needs approval",
1741
1268
client.name)
1742
1269
if self.server.use_dbus:
1743
1270
# Emit D-Bus signal
1744
1271
client.NeedApproval(
1745
client.approval_delay.total_seconds()
1746
* 1000, client.approved_by_default)
1272
client.approval_delay_milliseconds(),
1273
client.approved_by_default)
1747
1274
else:
1748
1275
logger.warning("Client %s was not approved",
1749
1276
client.name)
1753
1280
return
1754
1281
1755
1282
#wait until timeout or approved
1283
#x = float(client._timedelta_to_milliseconds(delay))
1756
1284
time = datetime.datetime.now()
1757
1285
client.changedstate.acquire()
1758
client.changedstate.wait(delay.total_seconds())
1286
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1759
1287
client.changedstate.release()
1760
1288
time2 = datetime.datetime.now()
1761
1289
if (time2 - time) >= delay:
1777
1305
try:
1778
1306
sent = session.send(client.secret[sent_size:])
1779
1307
except gnutls.errors.GNUTLSError as error:
1780
logger.warning("gnutls send failed",
1781
exc_info=error)
1308
logger.warning("gnutls send failed")
1782
1309
return
1783
1310
logger.debug("Sent: %d, remaining: %d",
1784
1311
sent, len(client.secret)
1785
1312
- (sent_size + sent))
1786
1313
sent_size += sent
1787
1314
1788
1315
logger.info("Sending secret to %s", client.name)
1789
# bump the timeout using extended_timeout
1790
client.bump_timeout(client.extended_timeout)
1316
# bump the timeout as if seen
1317
client.checked_ok(client.extended_timeout)
1791
1318
if self.server.use_dbus:
1792
1319
# Emit D-Bus signal
1793
1320
client.GotSecret()
1798
1325
try:
1799
1326
session.bye()
1800
1327
except gnutls.errors.GNUTLSError as error:
1801
logger.warning("GnuTLS bye failed",
1802
exc_info=error)
1328
logger.warning("GnuTLS bye failed")
1803
1329
1804
1330
@staticmethod
1805
1331
def peer_certificate(session):
1861
1387
# Convert the buffer to a Python bytestring
1862
1388
fpr = ctypes.string_at(buf, buf_len.value)
1863
1389
# Convert the bytestring to hexadecimal notation
1864
hex_fpr = binascii.hexlify(fpr).upper()
1390
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1865
1391
return hex_fpr
1866
1392
1867
1393
1870
1396
def sub_process_main(self, request, address):
1871
1397
try:
1872
1398
self.finish_request(request, address)
1873
except Exception:
1399
except:
1874
1400
self.handle_error(request, address)
1875
1401
self.close_request(request)
1876
1402
1877
1403
def process_request(self, request, address):
1878
1404
"""Start a new process to process the request."""
1879
proc = multiprocessing.Process(target = self.sub_process_main,
1880
args = (request, address))
1881
proc.start()
1882
return proc
1883
1405
multiprocessing.Process(target = self.sub_process_main,
1406
args = (request, address)).start()
1884
1407
1885
1408
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1886
1409
""" adds a pipe to the MixIn """
1890
1413
This function creates a new pipe in self.pipe
1891
1414
"""
1892
1415
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1893
1894
proc = MultiprocessingMixIn.process_request(self, request,
1895
client_address)
1416
1417
super(MultiprocessingMixInWithPipe,
1418
self).process_request(request, client_address)
1896
1419
self.child_pipe.close()
1897
self.add_pipe(parent_pipe, proc)
1898
1899
def add_pipe(self, parent_pipe, proc):
1420
self.add_pipe(parent_pipe)
1421
1422
def add_pipe(self, parent_pipe):
1900
1423
"""Dummy function; override as necessary"""
1901
raise NotImplementedError()
1902
1424
raise NotImplementedError
1903
1425
1904
1426
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1905
1427
socketserver.TCPServer, object):
1911
1433
use_ipv6: Boolean; to use IPv6 or not
1912
1434
"""
1913
1435
def __init__(self, server_address, RequestHandlerClass,
1914
interface=None, use_ipv6=True, socketfd=None):
1915
"""If socketfd is set, use that file descriptor instead of
1916
creating a new one with socket.socket().
1917
"""
1436
interface=None, use_ipv6=True):
1918
1437
self.interface = interface
1919
1438
if use_ipv6:
1920
1439
self.address_family = socket.AF_INET6
1921
if socketfd is not None:
1922
# Save the file descriptor
1923
self.socketfd = socketfd
1924
# Save the original socket.socket() function
1925
self.socket_socket = socket.socket
1926
# To implement --socket, we monkey patch socket.socket.
1927
#
1928
# (When socketserver.TCPServer is a new-style class, we
1929
# could make self.socket into a property instead of monkey
1930
# patching socket.socket.)
1931
#
1932
# Create a one-time-only replacement for socket.socket()
1933
@functools.wraps(socket.socket)
1934
def socket_wrapper(*args, **kwargs):
1935
# Restore original function so subsequent calls are
1936
# not affected.
1937
socket.socket = self.socket_socket
1938
del self.socket_socket
1939
# This time only, return a new socket object from the
1940
# saved file descriptor.
1941
return socket.fromfd(self.socketfd, *args, **kwargs)
1942
# Replace socket.socket() function with wrapper
1943
socket.socket = socket_wrapper
1944
# The socketserver.TCPServer.__init__ will call
1945
# socket.socket(), which might be our replacement,
1946
# socket_wrapper(), if socketfd was set.
1947
1440
socketserver.TCPServer.__init__(self, server_address,
1948
1441
RequestHandlerClass)
1949
1950
1442
def server_bind(self):
1951
1443
"""This overrides the normal server_bind() function
1952
1444
to bind to an interface if one was specified, and also NOT to
1960
1452
try:
1961
1453
self.socket.setsockopt(socket.SOL_SOCKET,
1962
1454
SO_BINDTODEVICE,
1963
str(self.interface + '\0'))
1455
str(self.interface
1456
+ '\0'))
1964
1457
except socket.error as error:
1965
if error.errno == errno.EPERM:
1966
logger.error("No permission to bind to"
1967
" interface %s", self.interface)
1968
elif error.errno == errno.ENOPROTOOPT:
1458
if error[0] == errno.EPERM:
1459
logger.error("No permission to"
1460
" bind to interface %s",
1461
self.interface)
1462
elif error[0] == errno.ENOPROTOOPT:
1969
1463
logger.error("SO_BINDTODEVICE not available;"
1970
1464
" cannot bind to interface %s",
1971
1465
self.interface)
1972
elif error.errno == errno.ENODEV:
1973
logger.error("Interface %s does not exist,"
1974
" cannot bind", self.interface)
1975
1466
else:
1976
1467
raise
1977
1468
# Only bind(2) the socket if we really need to.
1980
1471
if self.address_family == socket.AF_INET6:
1981
1472
any_address = "::" # in6addr_any
1982
1473
else:
1983
any_address = "0.0.0.0" # INADDR_ANY
1474
any_address = socket.INADDR_ANY
1984
1475
self.server_address = (any_address,
1985
1476
self.server_address[1])
1986
1477
elif not self.server_address[1]:
2007
1498
"""
2008
1499
def __init__(self, server_address, RequestHandlerClass,
2009
1500
interface=None, use_ipv6=True, clients=None,
2010
gnutls_priority=None, use_dbus=True, socketfd=None):
1501
gnutls_priority=None, use_dbus=True):
2011
1502
self.enabled = False
2012
1503
self.clients = clients
2013
1504
if self.clients is None:
2014
self.clients = {}
1505
self.clients = set()
2015
1506
self.use_dbus = use_dbus
2016
1507
self.gnutls_priority = gnutls_priority
2017
1508
IPv6_TCPServer.__init__(self, server_address,
2018
1509
RequestHandlerClass,
2019
1510
interface = interface,
2020
use_ipv6 = use_ipv6,
2021
socketfd = socketfd)
1511
use_ipv6 = use_ipv6)
2022
1512
def server_activate(self):
2023
1513
if self.enabled:
2024
1514
return socketserver.TCPServer.server_activate(self)
2025
2026
1515
def enable(self):
2027
1516
self.enabled = True
2028
2029
def add_pipe(self, parent_pipe, proc):
1517
def add_pipe(self, parent_pipe):
2030
1518
# Call "handle_ipc" for both data and EOF events
2031
1519
gobject.io_add_watch(parent_pipe.fileno(),
2032
1520
gobject.IO_IN | gobject.IO_HUP,
2033
1521
functools.partial(self.handle_ipc,
2034
parent_pipe =
2035
parent_pipe,
2036
proc = proc))
2037
1522
parent_pipe = parent_pipe))
1523
2038
1524
def handle_ipc(self, source, condition, parent_pipe=None,
2039
proc = None, client_object=None):
2040
# error, or the other end of multiprocessing.Pipe has closed
2041
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2042
# Wait for other process to exit
2043
proc.join()
1525
client_object=None):
1526
condition_names = {
1527
gobject.IO_IN: "IN", # There is data to read.
1528
gobject.IO_OUT: "OUT", # Data can be written (without
1529
# blocking).
1530
gobject.IO_PRI: "PRI", # There is urgent data to read.
1531
gobject.IO_ERR: "ERR", # Error condition.
1532
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1533
# broken, usually for pipes and
1534
# sockets).
1535
}
1536
conditions_string = ' | '.join(name
1537
for cond, name in
1538
condition_names.iteritems()
1539
if cond & condition)
1540
# error or the other end of multiprocessing.Pipe has closed
1541
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2044
1542
return False
2045
1543
2046
1544
# Read a request from the child
2051
1549
fpr = request[1]
2052
1550
address = request[2]
2053
1551
2054
for c in self.clients.itervalues():
1552
for c in self.clients:
2055
1553
if c.fingerprint == fpr:
2056
1554
client = c
2057
1555
break
2060
1558
"dress: %s", fpr, address)
2061
1559
if self.use_dbus:
2062
1560
# Emit D-Bus signal
2063
mandos_dbus_service.ClientNotFound(fpr,
2064
address[0])
1561
mandos_dbus_service.ClientNotFound(fpr, address[0])
2065
1562
parent_pipe.send(False)
2066
1563
return False
2067
1564
2068
1565
gobject.io_add_watch(parent_pipe.fileno(),
2069
1566
gobject.IO_IN | gobject.IO_HUP,
2070
1567
functools.partial(self.handle_ipc,
2071
parent_pipe =
2072
parent_pipe,
2073
proc = proc,
2074
client_object =
2075
client))
1568
parent_pipe = parent_pipe,
1569
client_object = client))
2076
1570
parent_pipe.send(True)
2077
# remove the old hook in favor of the new above hook on
2078
# same fileno
1571
# remove the old hook in favor of the new above hook on same fileno
2079
1572
return False
2080
1573
if command == 'funcall':
2081
1574
funcname = request[1]
2082
1575
args = request[2]
2083
1576
kwargs = request[3]
2084
1577
2085
parent_pipe.send(('data', getattr(client_object,
2086
funcname)(*args,
2087
**kwargs)))
2088
1578
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1579
2089
1580
if command == 'getattr':
2090
1581
attrname = request[1]
2091
1582
if callable(client_object.__getattribute__(attrname)):
2092
1583
parent_pipe.send(('function',))
2093
1584
else:
2094
parent_pipe.send(('data', client_object
2095
.__getattribute__(attrname)))
1585
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2096
1586
2097
1587
if command == 'setattr':
2098
1588
attrname = request[1]
2099
1589
value = request[2]
2100
1590
setattr(client_object, attrname, value)
2101
1591
2102
1592
return True
2103
1593
2104
1594
2105
def rfc3339_duration_to_delta(duration):
2106
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2107
2108
>>> rfc3339_duration_to_delta("P7D")
2109
datetime.timedelta(7)
2110
>>> rfc3339_duration_to_delta("PT60S")
2111
datetime.timedelta(0, 60)
2112
>>> rfc3339_duration_to_delta("PT60M")
2113
datetime.timedelta(0, 3600)
2114
>>> rfc3339_duration_to_delta("PT24H")
2115
datetime.timedelta(1)
2116
>>> rfc3339_duration_to_delta("P1W")
2117
datetime.timedelta(7)
2118
>>> rfc3339_duration_to_delta("PT5M30S")
2119
datetime.timedelta(0, 330)
2120
>>> rfc3339_duration_to_delta("P1DT3M20S")
2121
datetime.timedelta(1, 200)
2122
"""
2123
2124
# Parsing an RFC 3339 duration with regular expressions is not
2125
# possible - there would have to be multiple places for the same
2126
# values, like seconds. The current code, while more esoteric, is
2127
# cleaner without depending on a parsing library. If Python had a
2128
# built-in library for parsing we would use it, but we'd like to
2129
# avoid excessive use of external libraries.
2130
2131
# New type for defining tokens, syntax, and semantics all-in-one
2132
Token = collections.namedtuple("Token",
2133
("regexp", # To match token; if
2134
# "value" is not None,
2135
# must have a "group"
2136
# containing digits
2137
"value", # datetime.timedelta or
2138
# None
2139
"followers")) # Tokens valid after
2140
# this token
2141
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2142
# the "duration" ABNF definition in RFC 3339, Appendix A.
2143
token_end = Token(re.compile(r"$"), None, frozenset())
2144
token_second = Token(re.compile(r"(\d+)S"),
2145
datetime.timedelta(seconds=1),
2146
frozenset((token_end,)))
2147
token_minute = Token(re.compile(r"(\d+)M"),
2148
datetime.timedelta(minutes=1),
2149
frozenset((token_second, token_end)))
2150
token_hour = Token(re.compile(r"(\d+)H"),
2151
datetime.timedelta(hours=1),
2152
frozenset((token_minute, token_end)))
2153
token_time = Token(re.compile(r"T"),
2154
None,
2155
frozenset((token_hour, token_minute,
2156
token_second)))
2157
token_day = Token(re.compile(r"(\d+)D"),
2158
datetime.timedelta(days=1),
2159
frozenset((token_time, token_end)))
2160
token_month = Token(re.compile(r"(\d+)M"),
2161
datetime.timedelta(weeks=4),
2162
frozenset((token_day, token_end)))
2163
token_year = Token(re.compile(r"(\d+)Y"),
2164
datetime.timedelta(weeks=52),
2165
frozenset((token_month, token_end)))
2166
token_week = Token(re.compile(r"(\d+)W"),
2167
datetime.timedelta(weeks=1),
2168
frozenset((token_end,)))
2169
token_duration = Token(re.compile(r"P"), None,
2170
frozenset((token_year, token_month,
2171
token_day, token_time,
2172
token_week)))
2173
# Define starting values
2174
value = datetime.timedelta() # Value so far
2175
found_token = None
2176
followers = frozenset((token_duration,)) # Following valid tokens
2177
s = duration # String left to parse
2178
# Loop until end token is found
2179
while found_token is not token_end:
2180
# Search for any currently valid tokens
2181
for token in followers:
2182
match = token.regexp.match(s)
2183
if match is not None:
2184
# Token found
2185
if token.value is not None:
2186
# Value found, parse digits
2187
factor = int(match.group(1), 10)
2188
# Add to value so far
2189
value += factor * token.value
2190
# Strip token from string
2191
s = token.regexp.sub("", s, 1)
2192
# Go to found token
2193
found_token = token
2194
# Set valid next tokens
2195
followers = found_token.followers
2196
break
2197
else:
2198
# No currently valid tokens were found
2199
raise ValueError("Invalid RFC 3339 duration")
2200
# End token found
2201
return value
2202
2203
2204
1595
def string_to_delta(interval):
2205
1596
"""Parse a string and return a datetime.timedelta
2206
1597
2217
1608
>>> string_to_delta('5m 30s')
2218
1609
datetime.timedelta(0, 330)
2219
1610
"""
2220
2221
try:
2222
return rfc3339_duration_to_delta(interval)
2223
except ValueError:
2224
pass
2225
2226
1611
timevalue = datetime.timedelta(0)
2227
1612
for s in interval.split():
2228
1613
try:
2239
1624
elif suffix == "w":
2240
1625
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2241
1626
else:
2242
raise ValueError("Unknown suffix {!r}"
2243
.format(suffix))
2244
except IndexError as e:
1627
raise ValueError("Unknown suffix %r" % suffix)
1628
except (ValueError, IndexError) as e:
2245
1629
raise ValueError(*(e.args))
2246
1630
timevalue += delta
2247
1631
return timevalue
2248
1632
2249
1633
1634
def if_nametoindex(interface):
1635
"""Call the C function if_nametoindex(), or equivalent
1636
1637
Note: This function cannot accept a unicode string."""
1638
global if_nametoindex
1639
try:
1640
if_nametoindex = (ctypes.cdll.LoadLibrary
1641
(ctypes.util.find_library("c"))
1642
.if_nametoindex)
1643
except (OSError, AttributeError):
1644
logger.warning("Doing if_nametoindex the hard way")
1645
def if_nametoindex(interface):
1646
"Get an interface index the hard way, i.e. using fcntl()"
1647
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1648
with contextlib.closing(socket.socket()) as s:
1649
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1650
struct.pack(str("16s16x"),
1651
interface))
1652
interface_index = struct.unpack(str("I"),
1653
ifreq[16:20])[0]
1654
return interface_index
1655
return if_nametoindex(interface)
1656
1657
2250
1658
def daemon(nochdir = False, noclose = False):
2251
1659
"""See daemon(3). Standard BSD Unix function.
2252
1660
2260
1668
sys.exit()
2261
1669
if not noclose:
2262
1670
# Close all standard open file descriptors
2263
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1671
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2264
1672
if not stat.S_ISCHR(os.fstat(null).st_mode):
2265
raise OSError(errno.ENODEV, "{} not a character device"
2266
.format(os.devnull))
1673
raise OSError(errno.ENODEV,
1674
"%s not a character device"
1675
% os.path.devnull)
2267
1676
os.dup2(null, sys.stdin.fileno())
2268
1677
os.dup2(null, sys.stdout.fileno())
2269
1678
os.dup2(null, sys.stderr.fileno())
2278
1687
2279
1688
parser = argparse.ArgumentParser()
2280
1689
parser.add_argument("-v", "--version", action="version",
2281
version = "%(prog)s {}".format(version),
1690
version = "%%(prog)s %s" % version,
2282
1691
help="show version number and exit")
2283
1692
parser.add_argument("-i", "--interface", metavar="IF",
2284
1693
help="Bind to interface IF")
2290
1699
help="Run self-test")
2291
1700
parser.add_argument("--debug", action="store_true",
2292
1701
help="Debug mode; run in foreground and log"
2293
" to terminal", default=None)
1702
" to terminal")
2294
1703
parser.add_argument("--debuglevel", metavar="LEVEL",
2295
1704
help="Debug level for stdout output")
2296
1705
parser.add_argument("--priority", help="GnuTLS"
2303
1712
" files")
2304
1713
parser.add_argument("--no-dbus", action="store_false",
2305
1714
dest="use_dbus", help="Do not provide D-Bus"
2306
" system bus interface", default=None)
1715
" system bus interface")
2307
1716
parser.add_argument("--no-ipv6", action="store_false",
2308
dest="use_ipv6", help="Do not use IPv6",
2309
default=None)
2310
parser.add_argument("--no-restore", action="store_false",
2311
dest="restore", help="Do not restore stored"
2312
" state", default=None)
2313
parser.add_argument("--socket", type=int,
2314
help="Specify a file descriptor to a network"
2315
" socket to use instead of creating one")
2316
parser.add_argument("--statedir", metavar="DIR",
2317
help="Directory to save/restore state in")
2318
parser.add_argument("--foreground", action="store_true",
2319
help="Run in foreground", default=None)
2320
parser.add_argument("--no-zeroconf", action="store_false",
2321
dest="zeroconf", help="Do not use Zeroconf",
2322
default=None)
2323
1717
dest="use_ipv6", help="Do not use IPv6")
2324
1718
options = parser.parse_args()
2325
1719
2326
1720
if options.check:
2327
1721
import doctest
2328
fail_count, test_count = doctest.testmod()
2329
sys.exit(os.EX_OK if fail_count == 0 else 1)
1722
doctest.testmod()
1723
sys.exit()
2330
1724
2331
1725
# Default values for config file for server-global settings
2332
1726
server_defaults = { "interface": "",
2334
1728
"port": "",
2335
1729
"debug": "False",
2336
1730
"priority":
2337
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
1731
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2338
1732
"servicename": "Mandos",
2339
1733
"use_dbus": "True",
2340
1734
"use_ipv6": "True",
2341
1735
"debuglevel": "",
2342
"restore": "True",
2343
"socket": "",
2344
"statedir": "/var/lib/mandos",
2345
"foreground": "False",
2346
"zeroconf": "True",
2347
1736
}
2348
1737
2349
1738
# Parse config file for server-global settings
2354
1743
# Convert the SafeConfigParser object to a dict
2355
1744
server_settings = server_config.defaults()
2356
1745
# Use the appropriate methods on the non-string config options
2357
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1746
for option in ("debug", "use_dbus", "use_ipv6"):
2358
1747
server_settings[option] = server_config.getboolean("DEFAULT",
2359
1748
option)
2360
1749
if server_settings["port"]:
2361
1750
server_settings["port"] = server_config.getint("DEFAULT",
2362
1751
"port")
2363
if server_settings["socket"]:
2364
server_settings["socket"] = server_config.getint("DEFAULT",
2365
"socket")
2366
# Later, stdin will, and stdout and stderr might, be dup'ed
2367
# over with an opened os.devnull. But we don't want this to
2368
# happen with a supplied network socket.
2369
if 0 <= server_settings["socket"] <= 2:
2370
server_settings["socket"] = os.dup(server_settings
2371
["socket"])
2372
1752
del server_config
2373
1753
2374
1754
# Override the settings from the config file with command line
2375
1755
# options, if set.
2376
1756
for option in ("interface", "address", "port", "debug",
2377
1757
"priority", "servicename", "configdir",
2378
"use_dbus", "use_ipv6", "debuglevel", "restore",
2379
"statedir", "socket", "foreground", "zeroconf"):
1758
"use_dbus", "use_ipv6", "debuglevel"):
2380
1759
value = getattr(options, option)
2381
1760
if value is not None:
2382
1761
server_settings[option] = value
2385
1764
for option in server_settings.keys():
2386
1765
if type(server_settings[option]) is str:
2387
1766
server_settings[option] = unicode(server_settings[option])
2388
# Force all boolean options to be boolean
2389
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2390
"foreground", "zeroconf"):
2391
server_settings[option] = bool(server_settings[option])
2392
# Debug implies foreground
2393
if server_settings["debug"]:
2394
server_settings["foreground"] = True
2395
1767
# Now we have our good server settings in "server_settings"
2396
1768
2397
1769
##################################################################
2398
1770
2399
if (not server_settings["zeroconf"] and
2400
not (server_settings["port"]
2401
or server_settings["socket"] != "")):
2402
parser.error("Needs port or socket to work without"
2403
" Zeroconf")
2404
2405
1771
# For convenience
2406
1772
debug = server_settings["debug"]
2407
1773
debuglevel = server_settings["debuglevel"]
2408
1774
use_dbus = server_settings["use_dbus"]
2409
1775
use_ipv6 = server_settings["use_ipv6"]
2410
stored_state_path = os.path.join(server_settings["statedir"],
2411
stored_state_file)
2412
foreground = server_settings["foreground"]
2413
zeroconf = server_settings["zeroconf"]
2414
2415
if debug:
2416
initlogger(debug, logging.DEBUG)
2417
else:
2418
if not debuglevel:
2419
initlogger(debug)
2420
else:
2421
level = getattr(logging, debuglevel.upper())
2422
initlogger(debug, level)
2423
1776
2424
1777
if server_settings["servicename"] != "Mandos":
2425
1778
syslogger.setFormatter(logging.Formatter
2426
('Mandos ({}) [%(process)d]:'
2427
' %(levelname)s: %(message)s'
2428
.format(server_settings
2429
["servicename"])))
1779
('Mandos (%s) [%%(process)d]:'
1780
' %%(levelname)s: %%(message)s'
1781
% server_settings["servicename"]))
2430
1782
2431
1783
# Parse config file with clients
2432
client_config = configparser.SafeConfigParser(Client
2433
.client_defaults)
1784
client_defaults = { "timeout": "5m",
1785
"extended_timeout": "15m",
1786
"interval": "2m",
1787
"checker": "fping -q -- %%(host)s",
1788
"host": "",
1789
"approval_delay": "0s",
1790
"approval_duration": "1s",
1791
}
1792
client_config = configparser.SafeConfigParser(client_defaults)
2434
1793
client_config.read(os.path.join(server_settings["configdir"],
2435
1794
"clients.conf"))
2436
1795
2437
1796
global mandos_dbus_service
2438
1797
mandos_dbus_service = None
2439
1798
2440
socketfd = None
2441
if server_settings["socket"] != "":
2442
socketfd = server_settings["socket"]
2443
1799
tcp_server = MandosServer((server_settings["address"],
2444
1800
server_settings["port"]),
2445
1801
ClientHandler,
2448
1804
use_ipv6=use_ipv6,
2449
1805
gnutls_priority=
2450
1806
server_settings["priority"],
2451
use_dbus=use_dbus,
2452
socketfd=socketfd)
2453
if not foreground:
2454
pidfilename = "/run/mandos.pid"
2455
if not os.path.isdir("/run/."):
2456
pidfilename = "/var/run/mandos.pid"
2457
pidfile = None
1807
use_dbus=use_dbus)
1808
if not debug:
1809
pidfilename = "/var/run/mandos.pid"
2458
1810
try:
2459
1811
pidfile = open(pidfilename, "w")
2460
except IOError as e:
2461
logger.error("Could not open file %r", pidfilename,
2462
exc_info=e)
1812
except IOError:
1813
logger.error("Could not open file %r", pidfilename)
2463
1814
2464
for name in ("_mandos", "mandos", "nobody"):
1815
try:
1816
uid = pwd.getpwnam("_mandos").pw_uid
1817
gid = pwd.getpwnam("_mandos").pw_gid
1818
except KeyError:
2465
1819
try:
2466
uid = pwd.getpwnam(name).pw_uid
2467
gid = pwd.getpwnam(name).pw_gid
2468
break
1820
uid = pwd.getpwnam("mandos").pw_uid
1821
gid = pwd.getpwnam("mandos").pw_gid
2469
1822
except KeyError:
2470
continue
2471
else:
2472
uid = 65534
2473
gid = 65534
1823
try:
1824
uid = pwd.getpwnam("nobody").pw_uid
1825
gid = pwd.getpwnam("nobody").pw_gid
1826
except KeyError:
1827
uid = 65534
1828
gid = 65534
2474
1829
try:
2475
1830
os.setgid(gid)
2476
1831
os.setuid(uid)
2477
1832
except OSError as error:
2478
if error.errno != errno.EPERM:
2479
raise
1833
if error[0] != errno.EPERM:
1834
raise error
2480
1835
1836
if not debug and not debuglevel:
1837
syslogger.setLevel(logging.WARNING)
1838
console.setLevel(logging.WARNING)
1839
if debuglevel:
1840
level = getattr(logging, debuglevel.upper())
1841
syslogger.setLevel(level)
1842
console.setLevel(level)
1843
2481
1844
if debug:
2482
1845
# Enable all possible GnuTLS debugging
2483
1846
2493
1856
.gnutls_global_set_log_function(debug_gnutls))
2494
1857
2495
1858
# Redirect stdin so all checkers get /dev/null
2496
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1859
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2497
1860
os.dup2(null, sys.stdin.fileno())
2498
1861
if null > 2:
2499
1862
os.close(null)
1863
else:
1864
# No console logging
1865
logger.removeHandler(console)
2500
1866
2501
1867
# Need to fork before connecting to D-Bus
2502
if not foreground:
1868
if not debug:
2503
1869
# Close all input and output, do double fork, etc.
2504
1870
daemon()
2505
1871
2506
# multiprocessing will use threads, so before we use gobject we
2507
# need to inform gobject that threads will be used.
2508
gobject.threads_init()
2509
2510
1872
global main_loop
2511
1873
# From the Avahi example code
2512
DBusGMainLoop(set_as_default=True)
1874
DBusGMainLoop(set_as_default=True )
2513
1875
main_loop = gobject.MainLoop()
2514
1876
bus = dbus.SystemBus()
2515
1877
# End of Avahi example code
2516
1878
if use_dbus:
2517
1879
try:
2518
bus_name = dbus.service.BusName("se.recompile.Mandos",
1880
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
2519
1881
bus, do_not_queue=True)
2520
old_bus_name = (dbus.service.BusName
2521
("se.bsnet.fukt.Mandos", bus,
2522
do_not_queue=True))
2523
1882
except dbus.exceptions.NameExistsException as e:
2524
logger.error("Disabling D-Bus:", exc_info=e)
1883
logger.error(unicode(e) + ", disabling D-Bus")
2525
1884
use_dbus = False
2526
1885
server_settings["use_dbus"] = False
2527
1886
tcp_server.use_dbus = False
2528
if zeroconf:
2529
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2530
service = AvahiServiceToSyslog(name =
2531
server_settings["servicename"],
2532
servicetype = "_mandos._tcp",
2533
protocol = protocol, bus = bus)
2534
if server_settings["interface"]:
2535
service.interface = (if_nametoindex
2536
(str(server_settings["interface"])))
1887
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1888
service = AvahiService(name = server_settings["servicename"],
1889
servicetype = "_mandos._tcp",
1890
protocol = protocol, bus = bus)
1891
if server_settings["interface"]:
1892
service.interface = (if_nametoindex
1893
(str(server_settings["interface"])))
2537
1894
2538
1895
global multiprocessing_manager
2539
1896
multiprocessing_manager = multiprocessing.Manager()
2541
1898
client_class = Client
2542
1899
if use_dbus:
2543
1900
client_class = functools.partial(ClientDBus, bus = bus)
2544
2545
client_settings = Client.config_parser(client_config)
2546
old_client_settings = {}
2547
clients_data = {}
2548
2549
# This is used to redirect stdout and stderr for checker processes
2550
global wnull
2551
wnull = open(os.devnull, "w") # A writable /dev/null
2552
# Only used if server is running in foreground but not in debug
2553
# mode
2554
if debug or not foreground:
2555
wnull.close()
2556
2557
# Get client data and settings from last running state.
2558
if server_settings["restore"]:
2559
try:
2560
with open(stored_state_path, "rb") as stored_state:
2561
clients_data, old_client_settings = (pickle.load
2562
(stored_state))
2563
os.remove(stored_state_path)
2564
except IOError as e:
2565
if e.errno == errno.ENOENT:
2566
logger.warning("Could not load persistent state: {}"
2567
.format(os.strerror(e.errno)))
2568
else:
2569
logger.critical("Could not load persistent state:",
2570
exc_info=e)
2571
raise
2572
except EOFError as e:
2573
logger.warning("Could not load persistent state: "
2574
"EOFError:", exc_info=e)
2575
2576
with PGPEngine() as pgp:
2577
for client_name, client in clients_data.items():
2578
# Skip removed clients
2579
if client_name not in client_settings:
2580
continue
2581
2582
# Decide which value to use after restoring saved state.
2583
# We have three different values: Old config file,
2584
# new config file, and saved state.
2585
# New config value takes precedence if it differs from old
2586
# config value, otherwise use saved state.
2587
for name, value in client_settings[client_name].items():
2588
try:
2589
# For each value in new config, check if it
2590
# differs from the old config value (Except for
2591
# the "secret" attribute)
2592
if (name != "secret" and
2593
value != old_client_settings[client_name]
2594
[name]):
2595
client[name] = value
2596
except KeyError:
2597
pass
2598
2599
# Clients who has passed its expire date can still be
2600
# enabled if its last checker was successful. Clients
2601
# whose checker succeeded before we stored its state is
2602
# assumed to have successfully run all checkers during
2603
# downtime.
2604
if client["enabled"]:
2605
if datetime.datetime.utcnow() >= client["expires"]:
2606
if not client["last_checked_ok"]:
2607
logger.warning(
2608
"disabling client {} - Client never "
2609
"performed a successful checker"
2610
.format(client_name))
2611
client["enabled"] = False
2612
elif client["last_checker_status"] != 0:
2613
logger.warning(
2614
"disabling client {} - Client last"
2615
" checker failed with error code {}"
2616
.format(client_name,
2617
client["last_checker_status"]))
2618
client["enabled"] = False
2619
else:
2620
client["expires"] = (datetime.datetime
2621
.utcnow()
2622
+ client["timeout"])
2623
logger.debug("Last checker succeeded,"
2624
" keeping {} enabled"
2625
.format(client_name))
1901
def client_config_items(config, section):
1902
special_settings = {
1903
"approved_by_default":
1904
lambda: config.getboolean(section,
1905
"approved_by_default"),
1906
}
1907
for name, value in config.items(section):
2626
1908
try:
2627
client["secret"] = (
2628
pgp.decrypt(client["encrypted_secret"],
2629
client_settings[client_name]
2630
["secret"]))
2631
except PGPError:
2632
# If decryption fails, we use secret from new settings
2633
logger.debug("Failed to decrypt {} old secret"
2634
.format(client_name))
2635
client["secret"] = (
2636
client_settings[client_name]["secret"])
2637
2638
# Add/remove clients based on new changes made to config
2639
for client_name in (set(old_client_settings)
2640
- set(client_settings)):
2641
del clients_data[client_name]
2642
for client_name in (set(client_settings)
2643
- set(old_client_settings)):
2644
clients_data[client_name] = client_settings[client_name]
2645
2646
# Create all client objects
2647
for client_name, client in clients_data.items():
2648
tcp_server.clients[client_name] = client_class(
2649
name = client_name, settings = client,
2650
server_settings = server_settings)
2651
1909
yield (name, special_settings[name]())
1910
except KeyError:
1911
yield (name, value)
1912
1913
tcp_server.clients.update(set(
1914
client_class(name = section,
1915
config= dict(client_config_items(
1916
client_config, section)))
1917
for section in client_config.sections()))
2652
1918
if not tcp_server.clients:
2653
1919
logger.warning("No clients defined")
2654
2655
if not foreground:
2656
if pidfile is not None:
2657
try:
2658
with pidfile:
2659
pid = os.getpid()
2660
pidfile.write(str(pid) + "\n".encode("utf-8"))
2661
except IOError:
2662
logger.error("Could not write to file %r with PID %d",
2663
pidfilename, pid)
2664
del pidfile
1920
1921
if not debug:
1922
try:
1923
with pidfile:
1924
pid = os.getpid()
1925
pidfile.write(str(pid) + "\n".encode("utf-8"))
1926
del pidfile
1927
except IOError:
1928
logger.error("Could not write to file %r with PID %d",
1929
pidfilename, pid)
1930
except NameError:
1931
# "pidfile" was never created
1932
pass
2665
1933
del pidfilename
2666
1934
1935
signal.signal(signal.SIGINT, signal.SIG_IGN)
1936
2667
1937
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2668
1938
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2669
1939
2670
1940
if use_dbus:
2671
@alternate_dbus_interfaces({"se.recompile.Mandos":
2672
"se.bsnet.fukt.Mandos"})
2673
class MandosDBusService(DBusObjectWithProperties):
1941
class MandosDBusService(dbus.service.Object):
2674
1942
"""A D-Bus proxy object"""
2675
1943
def __init__(self):
2676
1944
dbus.service.Object.__init__(self, bus, "/")
2677
_interface = "se.recompile.Mandos"
2678
2679
@dbus_interface_annotations(_interface)
2680
def _foo(self):
2681
return { "org.freedesktop.DBus.Property"
2682
".EmitsChangedSignal":
2683
"false"}
1945
_interface = "se.bsnet.fukt.Mandos"
2684
1946
2685
1947
@dbus.service.signal(_interface, signature="o")
2686
1948
def ClientAdded(self, objpath):
2701
1963
def GetAllClients(self):
2702
1964
"D-Bus method"
2703
1965
return dbus.Array(c.dbus_object_path
2704
for c in
2705
tcp_server.clients.itervalues())
1966
for c in tcp_server.clients)
2706
1967
2707
1968
@dbus.service.method(_interface,
2708
1969
out_signature="a{oa{sv}}")
2710
1971
"D-Bus method"
2711
1972
return dbus.Dictionary(
2712
1973
((c.dbus_object_path, c.GetAll(""))
2713
for c in tcp_server.clients.itervalues()),
1974
for c in tcp_server.clients),
2714
1975
signature="oa{sv}")
2715
1976
2716
1977
@dbus.service.method(_interface, in_signature="o")
2717
1978
def RemoveClient(self, object_path):
2718
1979
"D-Bus method"
2719
for c in tcp_server.clients.itervalues():
1980
for c in tcp_server.clients:
2720
1981
if c.dbus_object_path == object_path:
2721
del tcp_server.clients[c.name]
1982
tcp_server.clients.remove(c)
2722
1983
c.remove_from_connection()
2723
1984
# Don't signal anything except ClientRemoved
2724
1985
c.disable(quiet=True)
2733
1994
2734
1995
def cleanup():
2735
1996
"Cleanup function; run on exit"
2736
if zeroconf:
2737
service.cleanup()
2738
2739
multiprocessing.active_children()
2740
wnull.close()
2741
if not (tcp_server.clients or client_settings):
2742
return
2743
2744
# Store client before exiting. Secrets are encrypted with key
2745
# based on what config file has. If config file is
2746
# removed/edited, old secret will thus be unrecovable.
2747
clients = {}
2748
with PGPEngine() as pgp:
2749
for client in tcp_server.clients.itervalues():
2750
key = client_settings[client.name]["secret"]
2751
client.encrypted_secret = pgp.encrypt(client.secret,
2752
key)
2753
client_dict = {}
2754
2755
# A list of attributes that can not be pickled
2756
# + secret.
2757
exclude = { "bus", "changedstate", "secret",
2758
"checker", "server_settings" }
2759
for name, typ in (inspect.getmembers
2760
(dbus.service.Object)):
2761
exclude.add(name)
2762
2763
client_dict["encrypted_secret"] = (client
2764
.encrypted_secret)
2765
for attr in client.client_structure:
2766
if attr not in exclude:
2767
client_dict[attr] = getattr(client, attr)
2768
2769
clients[client.name] = client_dict
2770
del client_settings[client.name]["secret"]
2771
2772
try:
2773
with (tempfile.NamedTemporaryFile
2774
(mode='wb', suffix=".pickle", prefix='clients-',
2775
dir=os.path.dirname(stored_state_path),
2776
delete=False)) as stored_state:
2777
pickle.dump((clients, client_settings), stored_state)
2778
tempname=stored_state.name
2779
os.rename(tempname, stored_state_path)
2780
except (IOError, OSError) as e:
2781
if not debug:
2782
try:
2783
os.remove(tempname)
2784
except NameError:
2785
pass
2786
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2787
logger.warning("Could not save persistent state: {}"
2788
.format(os.strerror(e.errno)))
2789
else:
2790
logger.warning("Could not save persistent state:",
2791
exc_info=e)
2792
raise
2793
2794
# Delete all clients, and settings from config
1997
service.cleanup()
1998
2795
1999
while tcp_server.clients:
2796
name, client = tcp_server.clients.popitem()
2000
client = tcp_server.clients.pop()
2797
2001
if use_dbus:
2798
2002
client.remove_from_connection()
2003
client.disable_hook = None
2799
2004
# Don't signal anything except ClientRemoved
2800
2005
client.disable(quiet=True)
2801
2006
if use_dbus:
2802
2007
# Emit D-Bus signal
2803
mandos_dbus_service.ClientRemoved(client
2804
.dbus_object_path,
2008
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2805
2009
client.name)
2806
client_settings.clear()
2807
2010
2808
2011
atexit.register(cleanup)
2809
2012
2810
for client in tcp_server.clients.itervalues():
2013
for client in tcp_server.clients:
2811
2014
if use_dbus:
2812
2015
# Emit D-Bus signal
2813
2016
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2814
# Need to initiate checking of clients
2815
if client.enabled:
2816
client.init_checker()
2017
client.enable()
2817
2018
2818
2019
tcp_server.enable()
2819
2020
tcp_server.server_activate()
2820
2021
2821
2022
# Find out what port we got
2822
if zeroconf:
2823
service.port = tcp_server.socket.getsockname()[1]
2023
service.port = tcp_server.socket.getsockname()[1]
2824
2024
if use_ipv6:
2825
2025
logger.info("Now listening on address %r, port %d,"
2826
" flowinfo %d, scope_id %d",
2827
*tcp_server.socket.getsockname())
2026
" flowinfo %d, scope_id %d"
2027
% tcp_server.socket.getsockname())
2828
2028
else: # IPv4
2829
logger.info("Now listening on address %r, port %d",
2830
*tcp_server.socket.getsockname())
2029
logger.info("Now listening on address %r, port %d"
2030
% tcp_server.socket.getsockname())
2831
2031
2832
2032
#service.interface = tcp_server.socket.getsockname()[3]
2833
2033
2834
2034
try:
2835
if zeroconf:
2836
# From the Avahi example code
2837
try:
2838
service.activate()
2839
except dbus.exceptions.DBusException as error:
2840
logger.critical("D-Bus Exception", exc_info=error)
2841
cleanup()
2842
sys.exit(1)
2843
# End of Avahi example code
2035
# From the Avahi example code
2036
try:
2037
service.activate()
2038
except dbus.exceptions.DBusException as error:
2039
logger.critical("DBusException: %s", error)
2040
cleanup()
2041
sys.exit(1)
2042
# End of Avahi example code
2844
2043
2845
2044
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2846
2045
lambda *args, **kwargs:
2850
2049
logger.debug("Starting main loop")
2851
2050
main_loop.run()
2852
2051
except AvahiError as error:
2853
logger.critical("Avahi Error", exc_info=error)
2052
logger.critical("AvahiError: %s", error)
2854
2053
cleanup()
2855
2054
sys.exit(1)
2856
2055
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0