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- Committer: Björn Påhlsson
- Date: 2011-12-21 00:33:12 UTC
- mfrom: (505.2.13 mandos-client-network-hooks)
- Revision ID: belorn@recompile.se-20111221003312-jwn6d76u2c2lejoz
working new feature: network-hooks - Enables user-scripts to take up
interfaces during bootup
interfaces during bootup
- files added:
- DBUS-API
- debian/source
- network-hooks.d
- files removed:
- plugins.d/plymouth
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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16
#
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# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
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# along with this program. If not, see
29
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# <http://www.gnu.org/licenses/>.
30
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#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
34
from __future__ import division, with_statement, absolute_import
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
35
36
36
37
import SocketServer as socketserver
37
38
import socket
38
import optparse
39
import argparse
39
40
import datetime
40
41
import errno
41
42
import gnutls.crypto
61
62
import functools
62
63
import cPickle as pickle
63
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import multiprocessing
65
import types
66
import binascii
67
import tempfile
64
68
65
69
import dbus
66
70
import dbus.service
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75
import ctypes.util
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76
import xml.dom.minidom
73
77
import inspect
78
import GnuPGInterface
74
79
75
80
try:
76
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
80
85
except ImportError:
81
86
SO_BINDTODEVICE = None
82
87
83
84
version = "1.0.14"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
version = "1.4.1"
89
stored_state_file = "clients.pickle"
90
91
logger = logging.getLogger()
88
92
syslogger = (logging.handlers.SysLogHandler
89
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
95
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
94
address = str("/dev/log")))
95
96
try:
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
100
except (OSError, AttributeError):
101
def if_nametoindex(interface):
102
"Get an interface index the hard way, i.e. using fcntl()"
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
with contextlib.closing(socket.socket()) as s:
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
110
return interface_index
111
112
113
def initlogger(level=logging.WARNING):
114
"""init logger and add loglevel"""
115
116
syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
118
' %(message)s'))
119
logger.addHandler(syslogger)
120
121
console = logging.StreamHandler()
122
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
123
' [%(process)d]:'
124
' %(levelname)s:'
125
' %(message)s'))
126
logger.addHandler(console)
127
logger.setLevel(level)
128
129
130
class PGPError(Exception):
131
"""Exception if encryption/decryption fails"""
132
pass
133
134
135
class PGPEngine(object):
136
"""A simple class for OpenPGP symmetric encryption & decryption"""
137
def __init__(self):
138
self.gnupg = GnuPGInterface.GnuPG()
139
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.gnupg.options.meta_interactive = False
142
self.gnupg.options.homedir = self.tempdir
143
self.gnupg.options.extra_args.extend(['--force-mdc',
144
'--quiet'])
145
146
def __enter__(self):
147
return self
148
149
def __exit__ (self, exc_type, exc_value, traceback):
150
self._cleanup()
151
return False
152
153
def __del__(self):
154
self._cleanup()
155
156
def _cleanup(self):
157
if self.tempdir is not None:
158
# Delete contents of tempdir
159
for root, dirs, files in os.walk(self.tempdir,
160
topdown = False):
161
for filename in files:
162
os.remove(os.path.join(root, filename))
163
for dirname in dirs:
164
os.rmdir(os.path.join(root, dirname))
165
# Remove tempdir
166
os.rmdir(self.tempdir)
167
self.tempdir = None
168
169
def password_encode(self, password):
170
# Passphrase can not be empty and can not contain newlines or
171
# NUL bytes. So we prefix it and hex encode it.
172
return b"mandos" + binascii.hexlify(password)
173
174
def encrypt(self, data, password):
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
177
try:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
182
f.write(data)
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
185
proc.wait()
186
except IOError as e:
187
raise PGPError(e)
188
self.gnupg.passphrase = None
189
return ciphertext
190
191
def decrypt(self, data, password):
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
194
try:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
199
f.write(data)
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
202
proc.wait()
203
except IOError as e:
204
raise PGPError(e)
205
self.gnupg.passphrase = None
206
return decrypted_plaintext
207
208
101
209
102
210
class AvahiError(Exception):
103
211
def __init__(self, value, *args, **kwargs):
119
227
Attributes:
120
228
interface: integer; avahi.IF_UNSPEC or an interface index.
121
229
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
230
name: string; Example: 'Mandos'
231
type: string; Example: '_mandos._tcp'.
124
232
See <http://www.dns-sd.org/ServiceTypes.html>
125
233
port: integer; what port to announce
126
234
TXT: list of strings; TXT record for the service
135
243
"""
136
244
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
245
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
246
domain = "", host = "", max_renames = 32768,
139
247
protocol = avahi.PROTO_UNSPEC, bus = None):
140
248
self.interface = interface
141
249
self.name = name
150
258
self.group = None # our entry group
151
259
self.server = None
152
260
self.bus = bus
261
self.entry_group_state_changed_match = None
153
262
def rename(self):
154
263
"""Derived from the Avahi example code"""
155
264
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
265
logger.critical("No suitable Zeroconf service name found"
266
" after %i retries, exiting.",
158
267
self.rename_count)
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
268
raise AvahiServiceError("Too many renames")
269
self.name = unicode(self.server
270
.GetAlternativeServiceName(self.name))
271
logger.info("Changing Zeroconf service name to %r ...",
162
272
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
273
self.remove()
168
self.add()
274
try:
275
self.add()
276
except dbus.exceptions.DBusException as error:
277
logger.critical("DBusException: %s", error)
278
self.cleanup()
279
os._exit(1)
169
280
self.rename_count += 1
170
281
def remove(self):
171
282
"""Derived from the Avahi example code"""
283
if self.entry_group_state_changed_match is not None:
284
self.entry_group_state_changed_match.remove()
285
self.entry_group_state_changed_match = None
172
286
if self.group is not None:
173
287
self.group.Reset()
174
288
def add(self):
175
289
"""Derived from the Avahi example code"""
290
self.remove()
176
291
if self.group is None:
177
292
self.group = dbus.Interface(
178
293
self.bus.get_object(avahi.DBUS_NAME,
179
294
self.server.EntryGroupNew()),
180
295
avahi.DBUS_INTERFACE_ENTRY_GROUP)
181
self.group.connect_to_signal('StateChanged',
182
self
183
.entry_group_state_changed)
184
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
296
self.entry_group_state_changed_match = (
297
self.group.connect_to_signal(
298
'StateChanged', self.entry_group_state_changed))
299
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
185
300
self.name, self.type)
186
301
self.group.AddService(
187
302
self.interface,
194
309
self.group.Commit()
195
310
def entry_group_state_changed(self, state, error):
196
311
"""Derived from the Avahi example code"""
197
logger.debug(u"Avahi entry group state change: %i", state)
312
logger.debug("Avahi entry group state change: %i", state)
198
313
199
314
if state == avahi.ENTRY_GROUP_ESTABLISHED:
200
logger.debug(u"Zeroconf service established.")
315
logger.debug("Zeroconf service established.")
201
316
elif state == avahi.ENTRY_GROUP_COLLISION:
202
logger.warning(u"Zeroconf service name collision.")
317
logger.info("Zeroconf service name collision.")
203
318
self.rename()
204
319
elif state == avahi.ENTRY_GROUP_FAILURE:
205
logger.critical(u"Avahi: Error in group state changed %s",
320
logger.critical("Avahi: Error in group state changed %s",
206
321
unicode(error))
207
raise AvahiGroupError(u"State changed: %s"
322
raise AvahiGroupError("State changed: %s"
208
323
% unicode(error))
209
324
def cleanup(self):
210
325
"""Derived from the Avahi example code"""
211
326
if self.group is not None:
212
self.group.Free()
327
try:
328
self.group.Free()
329
except (dbus.exceptions.UnknownMethodException,
330
dbus.exceptions.DBusException):
331
pass
213
332
self.group = None
214
def server_state_changed(self, state):
333
self.remove()
334
def server_state_changed(self, state, error=None):
215
335
"""Derived from the Avahi example code"""
216
logger.debug(u"Avahi server state change: %i", state)
217
if state == avahi.SERVER_COLLISION:
218
logger.error(u"Zeroconf server name collision")
219
self.remove()
336
logger.debug("Avahi server state change: %i", state)
337
bad_states = { avahi.SERVER_INVALID:
338
"Zeroconf server invalid",
339
avahi.SERVER_REGISTERING: None,
340
avahi.SERVER_COLLISION:
341
"Zeroconf server name collision",
342
avahi.SERVER_FAILURE:
343
"Zeroconf server failure" }
344
if state in bad_states:
345
if bad_states[state] is not None:
346
if error is None:
347
logger.error(bad_states[state])
348
else:
349
logger.error(bad_states[state] + ": %r", error)
350
self.cleanup()
220
351
elif state == avahi.SERVER_RUNNING:
221
352
self.add()
353
else:
354
if error is None:
355
logger.debug("Unknown state: %r", state)
356
else:
357
logger.debug("Unknown state: %r: %r", state, error)
222
358
def activate(self):
223
359
"""Derived from the Avahi example code"""
224
360
if self.server is None:
225
361
self.server = dbus.Interface(
226
362
self.bus.get_object(avahi.DBUS_NAME,
227
avahi.DBUS_PATH_SERVER),
363
avahi.DBUS_PATH_SERVER,
364
follow_name_owner_changes=True),
228
365
avahi.DBUS_INTERFACE_SERVER)
229
self.server.connect_to_signal(u"StateChanged",
366
self.server.connect_to_signal("StateChanged",
230
367
self.server_state_changed)
231
368
self.server_state_changed(self.server.GetState())
232
369
370
class AvahiServiceToSyslog(AvahiService):
371
def rename(self):
372
"""Add the new name to the syslog messages"""
373
ret = AvahiService.rename(self)
374
syslogger.setFormatter(logging.Formatter
375
('Mandos (%s) [%%(process)d]:'
376
' %%(levelname)s: %%(message)s'
377
% self.name))
378
return ret
233
379
380
def timedelta_to_milliseconds(td):
381
"Convert a datetime.timedelta() to milliseconds"
382
return ((td.days * 24 * 60 * 60 * 1000)
383
+ (td.seconds * 1000)
384
+ (td.microseconds // 1000))
385
234
386
class Client(object):
235
387
"""A representation of a client host served by this server.
236
388
237
389
Attributes:
238
name: string; from the config file, used in log messages and
239
D-Bus identifiers
390
approved: bool(); 'None' if not yet approved/disapproved
391
approval_delay: datetime.timedelta(); Time to wait for approval
392
approval_duration: datetime.timedelta(); Duration of one approval
393
checker: subprocess.Popen(); a running checker process used
394
to see if the client lives.
395
'None' if no process is running.
396
checker_callback_tag: a gobject event source tag, or None
397
checker_command: string; External command which is run to check
398
if client lives. %() expansions are done at
399
runtime with vars(self) as dict, so that for
400
instance %(name)s can be used in the command.
401
checker_initiator_tag: a gobject event source tag, or None
402
created: datetime.datetime(); (UTC) object creation
403
client_structure: Object describing what attributes a client has
404
and is used for storing the client at exit
405
current_checker_command: string; current running checker_command
406
disable_initiator_tag: a gobject event source tag, or None
407
enabled: bool()
240
408
fingerprint: string (40 or 32 hexadecimal digits); used to
241
409
uniquely identify the client
242
secret: bytestring; sent verbatim (over TLS) to client
243
410
host: string; available for use by the checker command
244
created: datetime.datetime(); (UTC) object creation
245
last_enabled: datetime.datetime(); (UTC)
246
enabled: bool()
411
interval: datetime.timedelta(); How often to start a new checker
412
last_approval_request: datetime.datetime(); (UTC) or None
247
413
last_checked_ok: datetime.datetime(); (UTC) or None
414
last_checker_status: integer between 0 and 255 reflecting exit
415
status of last checker. -1 reflects crashed
416
checker, or None.
417
last_enabled: datetime.datetime(); (UTC) or None
418
name: string; from the config file, used in log messages and
419
D-Bus identifiers
420
secret: bytestring; sent verbatim (over TLS) to client
248
421
timeout: datetime.timedelta(); How long from last_checked_ok
249
422
until this client is disabled
250
interval: datetime.timedelta(); How often to start a new checker
251
disable_hook: If set, called by disable() as disable_hook(self)
252
checker: subprocess.Popen(); a running checker process used
253
to see if the client lives.
254
'None' if no process is running.
255
checker_initiator_tag: a gobject event source tag, or None
256
disable_initiator_tag: - '' -
257
checker_callback_tag: - '' -
258
checker_command: string; External command which is run to check if
259
client lives. %() expansions are done at
260
runtime with vars(self) as dict, so that for
261
instance %(name)s can be used in the command.
262
current_checker_command: string; current running checker_command
263
approved_delay: datetime.timedelta(); Time to wait for approval
264
_approved: bool(); 'None' if not yet approved/disapproved
265
approved_duration: datetime.timedelta(); Duration of one approval
423
extended_timeout: extra long timeout when password has been sent
424
runtime_expansions: Allowed attributes for runtime expansion.
425
expires: datetime.datetime(); time (UTC) when a client will be
426
disabled, or None
266
427
"""
267
428
268
@staticmethod
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
429
runtime_expansions = ("approval_delay", "approval_duration",
430
"created", "enabled", "fingerprint",
431
"host", "interval", "last_checked_ok",
432
"last_enabled", "name", "timeout")
433
client_defaults = { "timeout": "5m",
434
"extended_timeout": "15m",
435
"interval": "2m",
436
"checker": "fping -q -- %%(host)s",
437
"host": "",
438
"approval_delay": "0s",
439
"approval_duration": "1s",
440
"approved_by_default": "True",
441
"enabled": "True",
442
}
274
443
275
444
def timeout_milliseconds(self):
276
445
"Return the 'timeout' attribute in milliseconds"
277
return self._timedelta_to_milliseconds(self.timeout)
446
return timedelta_to_milliseconds(self.timeout)
447
448
def extended_timeout_milliseconds(self):
449
"Return the 'extended_timeout' attribute in milliseconds"
450
return timedelta_to_milliseconds(self.extended_timeout)
278
451
279
452
def interval_milliseconds(self):
280
453
"Return the 'interval' attribute in milliseconds"
281
return self._timedelta_to_milliseconds(self.interval)
282
283
def approved_delay_milliseconds(self):
284
return self._timedelta_to_milliseconds(self.approved_delay)
454
return timedelta_to_milliseconds(self.interval)
285
455
286
def __init__(self, name = None, disable_hook=None, config=None):
456
def approval_delay_milliseconds(self):
457
return timedelta_to_milliseconds(self.approval_delay)
458
459
@staticmethod
460
def config_parser(config):
461
""" Construct a new dict of client settings of this form:
462
{ client_name: {setting_name: value, ...}, ...}
463
with exceptions for any special settings as defined above"""
464
settings = {}
465
for client_name in config.sections():
466
section = dict(config.items(client_name))
467
client = settings[client_name] = {}
468
469
client["host"] = section["host"]
470
# Reformat values from string types to Python types
471
client["approved_by_default"] = config.getboolean(
472
client_name, "approved_by_default")
473
client["enabled"] = config.getboolean(client_name, "enabled")
474
475
client["fingerprint"] = (section["fingerprint"].upper()
476
.replace(" ", ""))
477
if "secret" in section:
478
client["secret"] = section["secret"].decode("base64")
479
elif "secfile" in section:
480
with open(os.path.expanduser(os.path.expandvars
481
(section["secfile"])),
482
"rb") as secfile:
483
client["secret"] = secfile.read()
484
else:
485
raise TypeError("No secret or secfile for section %s"
486
% section)
487
client["timeout"] = string_to_delta(section["timeout"])
488
client["extended_timeout"] = string_to_delta(
489
section["extended_timeout"])
490
client["interval"] = string_to_delta(section["interval"])
491
client["approval_delay"] = string_to_delta(
492
section["approval_delay"])
493
client["approval_duration"] = string_to_delta(
494
section["approval_duration"])
495
client["checker_command"] = section["checker"]
496
client["last_approval_request"] = None
497
client["last_checked_ok"] = None
498
client["last_checker_status"] = None
499
if client["enabled"]:
500
client["last_enabled"] = datetime.datetime.utcnow()
501
client["expires"] = (datetime.datetime.utcnow()
502
+ client["timeout"])
503
else:
504
client["last_enabled"] = None
505
client["expires"] = None
506
507
return settings
508
509
510
def __init__(self, settings, name = None):
287
511
"""Note: the 'checker' key in 'config' sets the
288
512
'checker_command' attribute and *not* the 'checker'
289
513
attribute."""
290
514
self.name = name
291
if config is None:
292
config = {}
293
logger.debug(u"Creating client %r", self.name)
515
# adding all client settings
516
for setting, value in settings.iteritems():
517
setattr(self, setting, value)
518
519
logger.debug("Creating client %r", self.name)
294
520
# Uppercase and remove spaces from fingerprint for later
295
521
# comparison purposes with return value from the fingerprint()
296
522
# function
297
self.fingerprint = (config[u"fingerprint"].upper()
298
.replace(u" ", u""))
299
logger.debug(u" Fingerprint: %s", self.fingerprint)
300
if u"secret" in config:
301
self.secret = config[u"secret"].decode(u"base64")
302
elif u"secfile" in config:
303
with open(os.path.expanduser(os.path.expandvars
304
(config[u"secfile"])),
305
"rb") as secfile:
306
self.secret = secfile.read()
307
else:
308
raise TypeError(u"No secret or secfile for client %s"
309
% self.name)
310
self.host = config.get(u"host", u"")
311
self.created = datetime.datetime.utcnow()
312
self.enabled = False
313
self.last_enabled = None
314
self.last_checked_ok = None
315
self.timeout = string_to_delta(config[u"timeout"])
316
self.interval = string_to_delta(config[u"interval"])
317
self.disable_hook = disable_hook
523
logger.debug(" Fingerprint: %s", self.fingerprint)
524
self.created = settings.get("created", datetime.datetime.utcnow())
525
526
# attributes specific for this server instance
318
527
self.checker = None
319
528
self.checker_initiator_tag = None
320
529
self.disable_initiator_tag = None
321
530
self.checker_callback_tag = None
322
self.checker_command = config[u"checker"]
323
531
self.current_checker_command = None
324
self.last_connect = None
325
self._approved = None
326
self.approved_by_default = config.get(u"approved_by_default",
327
True)
532
self.approved = None
328
533
self.approvals_pending = 0
329
self.approved_delay = string_to_delta(
330
config[u"approved_delay"])
331
self.approved_duration = string_to_delta(
332
config[u"approved_duration"])
333
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
534
self.changedstate = (multiprocessing_manager
535
.Condition(multiprocessing_manager
536
.Lock()))
537
self.client_structure = [attr for attr in
538
self.__dict__.iterkeys()
539
if not attr.startswith("_")]
540
self.client_structure.append("client_structure")
541
542
for name, t in inspect.getmembers(type(self),
543
lambda obj:
544
isinstance(obj,
545
property)):
546
if not name.startswith("_"):
547
self.client_structure.append(name)
334
548
549
# Send notice to process children that client state has changed
335
550
def send_changedstate(self):
336
self.changedstate.acquire()
337
self.changedstate.notify_all()
338
self.changedstate.release()
339
551
with self.changedstate:
552
self.changedstate.notify_all()
553
340
554
def enable(self):
341
555
"""Start this client's checker and timeout hooks"""
342
if getattr(self, u"enabled", False):
556
if getattr(self, "enabled", False):
343
557
# Already enabled
344
558
return
345
559
self.send_changedstate()
560
self.expires = datetime.datetime.utcnow() + self.timeout
561
self.enabled = True
346
562
self.last_enabled = datetime.datetime.utcnow()
563
self.init_checker()
564
565
def disable(self, quiet=True):
566
"""Disable this client."""
567
if not getattr(self, "enabled", False):
568
return False
569
if not quiet:
570
self.send_changedstate()
571
if not quiet:
572
logger.info("Disabling client %s", self.name)
573
if getattr(self, "disable_initiator_tag", False):
574
gobject.source_remove(self.disable_initiator_tag)
575
self.disable_initiator_tag = None
576
self.expires = None
577
if getattr(self, "checker_initiator_tag", False):
578
gobject.source_remove(self.checker_initiator_tag)
579
self.checker_initiator_tag = None
580
self.stop_checker()
581
self.enabled = False
582
# Do not run this again if called by a gobject.timeout_add
583
return False
584
585
def __del__(self):
586
self.disable()
587
588
def init_checker(self):
347
589
# Schedule a new checker to be started an 'interval' from now,
348
590
# and every interval from then on.
349
591
self.checker_initiator_tag = (gobject.timeout_add
353
595
self.disable_initiator_tag = (gobject.timeout_add
354
596
(self.timeout_milliseconds(),
355
597
self.disable))
356
self.enabled = True
357
598
# Also start a new checker *right now*.
358
599
self.start_checker()
359
600
360
def disable(self, quiet=True):
361
"""Disable this client."""
362
if not getattr(self, "enabled", False):
363
return False
364
if not quiet:
365
self.send_changedstate()
366
if not quiet:
367
logger.info(u"Disabling client %s", self.name)
368
if getattr(self, u"disable_initiator_tag", False):
369
gobject.source_remove(self.disable_initiator_tag)
370
self.disable_initiator_tag = None
371
if getattr(self, u"checker_initiator_tag", False):
372
gobject.source_remove(self.checker_initiator_tag)
373
self.checker_initiator_tag = None
374
self.stop_checker()
375
if self.disable_hook:
376
self.disable_hook(self)
377
self.enabled = False
378
# Do not run this again if called by a gobject.timeout_add
379
return False
380
381
def __del__(self):
382
self.disable_hook = None
383
self.disable()
384
385
601
def checker_callback(self, pid, condition, command):
386
602
"""The checker has completed, so take appropriate actions."""
387
603
self.checker_callback_tag = None
388
604
self.checker = None
389
605
if os.WIFEXITED(condition):
390
exitstatus = os.WEXITSTATUS(condition)
391
if exitstatus == 0:
392
logger.info(u"Checker for %(name)s succeeded",
606
self.last_checker_status = os.WEXITSTATUS(condition)
607
if self.last_checker_status == 0:
608
logger.info("Checker for %(name)s succeeded",
393
609
vars(self))
394
610
self.checked_ok()
395
611
else:
396
logger.info(u"Checker for %(name)s failed",
612
logger.info("Checker for %(name)s failed",
397
613
vars(self))
398
614
else:
399
logger.warning(u"Checker for %(name)s crashed?",
615
self.last_checker_status = -1
616
logger.warning("Checker for %(name)s crashed?",
400
617
vars(self))
401
618
402
def checked_ok(self):
619
def checked_ok(self, timeout=None):
403
620
"""Bump up the timeout for this client.
404
621
405
622
This should only be called when the client has been seen,
406
623
alive and well.
407
624
"""
625
if timeout is None:
626
timeout = self.timeout
408
627
self.last_checked_ok = datetime.datetime.utcnow()
409
gobject.source_remove(self.disable_initiator_tag)
410
self.disable_initiator_tag = (gobject.timeout_add
411
(self.timeout_milliseconds(),
412
self.disable))
628
if self.disable_initiator_tag is not None:
629
gobject.source_remove(self.disable_initiator_tag)
630
if getattr(self, "enabled", False):
631
self.disable_initiator_tag = (gobject.timeout_add
632
(timedelta_to_milliseconds
633
(timeout), self.disable))
634
self.expires = datetime.datetime.utcnow() + timeout
635
636
def need_approval(self):
637
self.last_approval_request = datetime.datetime.utcnow()
413
638
414
639
def start_checker(self):
415
640
"""Start a new checker subprocess if one is not running.
428
653
# If a checker exists, make sure it is not a zombie
429
654
try:
430
655
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
431
except (AttributeError, OSError), error:
656
except (AttributeError, OSError) as error:
432
657
if (isinstance(error, OSError)
433
658
and error.errno != errno.ECHILD):
434
659
raise error
435
660
else:
436
661
if pid:
437
logger.warning(u"Checker was a zombie")
662
logger.warning("Checker was a zombie")
438
663
gobject.source_remove(self.checker_callback_tag)
439
664
self.checker_callback(pid, status,
440
665
self.current_checker_command)
445
670
command = self.checker_command % self.host
446
671
except TypeError:
447
672
# Escape attributes for the shell
448
escaped_attrs = dict((key,
449
re.escape(unicode(str(val),
450
errors=
451
u'replace')))
452
for key, val in
453
vars(self).iteritems())
673
escaped_attrs = dict(
674
(attr,
675
re.escape(unicode(str(getattr(self, attr, "")),
676
errors=
677
'replace')))
678
for attr in
679
self.runtime_expansions)
680
454
681
try:
455
682
command = self.checker_command % escaped_attrs
456
except TypeError, error:
457
logger.error(u'Could not format string "%s":'
458
u' %s', self.checker_command, error)
683
except TypeError as error:
684
logger.error('Could not format string "%s":'
685
' %s', self.checker_command, error)
459
686
return True # Try again later
460
687
self.current_checker_command = command
461
688
try:
462
logger.info(u"Starting checker %r for %s",
689
logger.info("Starting checker %r for %s",
463
690
command, self.name)
464
691
# We don't need to redirect stdout and stderr, since
465
692
# in normal mode, that is already done by daemon(),
467
694
# always replaced by /dev/null.)
468
695
self.checker = subprocess.Popen(command,
469
696
close_fds=True,
470
shell=True, cwd=u"/")
697
shell=True, cwd="/")
471
698
self.checker_callback_tag = (gobject.child_watch_add
472
699
(self.checker.pid,
473
700
self.checker_callback,
478
705
if pid:
479
706
gobject.source_remove(self.checker_callback_tag)
480
707
self.checker_callback(pid, status, command)
481
except OSError, error:
482
logger.error(u"Failed to start subprocess: %s",
708
except OSError as error:
709
logger.error("Failed to start subprocess: %s",
483
710
error)
484
711
# Re-run this periodically if run by gobject.timeout_add
485
712
return True
489
716
if self.checker_callback_tag:
490
717
gobject.source_remove(self.checker_callback_tag)
491
718
self.checker_callback_tag = None
492
if getattr(self, u"checker", None) is None:
719
if getattr(self, "checker", None) is None:
493
720
return
494
logger.debug(u"Stopping checker for %(name)s", vars(self))
721
logger.debug("Stopping checker for %(name)s", vars(self))
495
722
try:
496
723
os.kill(self.checker.pid, signal.SIGTERM)
497
724
#time.sleep(0.5)
498
725
#if self.checker.poll() is None:
499
726
# os.kill(self.checker.pid, signal.SIGKILL)
500
except OSError, error:
727
except OSError as error:
501
728
if error.errno != errno.ESRCH: # No such process
502
729
raise
503
730
self.checker = None
504
731
505
def dbus_service_property(dbus_interface, signature=u"v",
506
access=u"readwrite", byte_arrays=False):
732
733
def dbus_service_property(dbus_interface, signature="v",
734
access="readwrite", byte_arrays=False):
507
735
"""Decorators for marking methods of a DBusObjectWithProperties to
508
736
become properties on the D-Bus.
509
737
516
744
"""
517
745
# Encoding deeply encoded byte arrays is not supported yet by the
518
746
# "Set" method, so we fail early here:
519
if byte_arrays and signature != u"ay":
520
raise ValueError(u"Byte arrays not supported for non-'ay'"
521
u" signature %r" % signature)
747
if byte_arrays and signature != "ay":
748
raise ValueError("Byte arrays not supported for non-'ay'"
749
" signature %r" % signature)
522
750
def decorator(func):
523
751
func._dbus_is_property = True
524
752
func._dbus_interface = dbus_interface
525
753
func._dbus_signature = signature
526
754
func._dbus_access = access
527
755
func._dbus_name = func.__name__
528
if func._dbus_name.endswith(u"_dbus_property"):
756
if func._dbus_name.endswith("_dbus_property"):
529
757
func._dbus_name = func._dbus_name[:-14]
530
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
758
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
531
759
return func
532
760
return decorator
533
761
553
781
554
782
class DBusObjectWithProperties(dbus.service.Object):
555
783
"""A D-Bus object with properties.
556
784
557
785
Classes inheriting from this can use the dbus_service_property
558
786
decorator to expose methods as D-Bus properties. It exposes the
559
787
standard Get(), Set(), and GetAll() methods on the D-Bus.
561
789
562
790
@staticmethod
563
791
def _is_dbus_property(obj):
564
return getattr(obj, u"_dbus_is_property", False)
792
return getattr(obj, "_dbus_is_property", False)
565
793
566
794
def _get_all_dbus_properties(self):
567
795
"""Returns a generator of (name, attribute) pairs
568
796
"""
569
return ((prop._dbus_name, prop)
797
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
798
for cls in self.__class__.__mro__
570
799
for name, prop in
571
inspect.getmembers(self, self._is_dbus_property))
800
inspect.getmembers(cls, self._is_dbus_property))
572
801
573
802
def _get_dbus_property(self, interface_name, property_name):
574
803
"""Returns a bound method if one exists which is a D-Bus
575
804
property with the specified name and interface.
576
805
"""
577
for name in (property_name,
578
property_name + u"_dbus_property"):
579
prop = getattr(self, name, None)
580
if (prop is None
581
or not self._is_dbus_property(prop)
582
or prop._dbus_name != property_name
583
or (interface_name and prop._dbus_interface
584
and interface_name != prop._dbus_interface)):
585
continue
586
return prop
806
for cls in self.__class__.__mro__:
807
for name, value in (inspect.getmembers
808
(cls, self._is_dbus_property)):
809
if (value._dbus_name == property_name
810
and value._dbus_interface == interface_name):
811
return value.__get__(self)
812
587
813
# No such property
588
raise DBusPropertyNotFound(self.dbus_object_path + u":"
589
+ interface_name + u"."
814
raise DBusPropertyNotFound(self.dbus_object_path + ":"
815
+ interface_name + "."
590
816
+ property_name)
591
817
592
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
593
out_signature=u"v")
818
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
819
out_signature="v")
594
820
def Get(self, interface_name, property_name):
595
821
"""Standard D-Bus property Get() method, see D-Bus standard.
596
822
"""
597
823
prop = self._get_dbus_property(interface_name, property_name)
598
if prop._dbus_access == u"write":
824
if prop._dbus_access == "write":
599
825
raise DBusPropertyAccessException(property_name)
600
826
value = prop()
601
if not hasattr(value, u"variant_level"):
827
if not hasattr(value, "variant_level"):
602
828
return value
603
829
return type(value)(value, variant_level=value.variant_level+1)
604
830
605
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
831
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
606
832
def Set(self, interface_name, property_name, value):
607
833
"""Standard D-Bus property Set() method, see D-Bus standard.
608
834
"""
609
835
prop = self._get_dbus_property(interface_name, property_name)
610
if prop._dbus_access == u"read":
836
if prop._dbus_access == "read":
611
837
raise DBusPropertyAccessException(property_name)
612
if prop._dbus_get_args_options[u"byte_arrays"]:
838
if prop._dbus_get_args_options["byte_arrays"]:
613
839
# The byte_arrays option is not supported yet on
614
840
# signatures other than "ay".
615
if prop._dbus_signature != u"ay":
841
if prop._dbus_signature != "ay":
616
842
raise ValueError
617
843
value = dbus.ByteArray(''.join(unichr(byte)
618
844
for byte in value))
619
845
prop(value)
620
846
621
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
622
out_signature=u"a{sv}")
847
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
848
out_signature="a{sv}")
623
849
def GetAll(self, interface_name):
624
850
"""Standard D-Bus property GetAll() method, see D-Bus
625
851
standard.
626
852
627
853
Note: Will not include properties with access="write".
628
854
"""
629
all = {}
855
properties = {}
630
856
for name, prop in self._get_all_dbus_properties():
631
857
if (interface_name
632
858
and interface_name != prop._dbus_interface):
633
859
# Interface non-empty but did not match
634
860
continue
635
861
# Ignore write-only properties
636
if prop._dbus_access == u"write":
862
if prop._dbus_access == "write":
637
863
continue
638
864
value = prop()
639
if not hasattr(value, u"variant_level"):
640
all[name] = value
865
if not hasattr(value, "variant_level"):
866
properties[name] = value
641
867
continue
642
all[name] = type(value)(value, variant_level=
643
value.variant_level+1)
644
return dbus.Dictionary(all, signature=u"sv")
868
properties[name] = type(value)(value, variant_level=
869
value.variant_level+1)
870
return dbus.Dictionary(properties, signature="sv")
645
871
646
872
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
647
out_signature=u"s",
873
out_signature="s",
648
874
path_keyword='object_path',
649
875
connection_keyword='connection')
650
876
def Introspect(self, object_path, connection):
655
881
try:
656
882
document = xml.dom.minidom.parseString(xmlstring)
657
883
def make_tag(document, name, prop):
658
e = document.createElement(u"property")
659
e.setAttribute(u"name", name)
660
e.setAttribute(u"type", prop._dbus_signature)
661
e.setAttribute(u"access", prop._dbus_access)
884
e = document.createElement("property")
885
e.setAttribute("name", name)
886
e.setAttribute("type", prop._dbus_signature)
887
e.setAttribute("access", prop._dbus_access)
662
888
return e
663
for if_tag in document.getElementsByTagName(u"interface"):
889
for if_tag in document.getElementsByTagName("interface"):
664
890
for tag in (make_tag(document, name, prop)
665
891
for name, prop
666
892
in self._get_all_dbus_properties()
667
893
if prop._dbus_interface
668
== if_tag.getAttribute(u"name")):
894
== if_tag.getAttribute("name")):
669
895
if_tag.appendChild(tag)
670
896
# Add the names to the return values for the
671
897
# "org.freedesktop.DBus.Properties" methods
672
if (if_tag.getAttribute(u"name")
673
== u"org.freedesktop.DBus.Properties"):
674
for cn in if_tag.getElementsByTagName(u"method"):
675
if cn.getAttribute(u"name") == u"Get":
676
for arg in cn.getElementsByTagName(u"arg"):
677
if (arg.getAttribute(u"direction")
678
== u"out"):
679
arg.setAttribute(u"name", u"value")
680
elif cn.getAttribute(u"name") == u"GetAll":
681
for arg in cn.getElementsByTagName(u"arg"):
682
if (arg.getAttribute(u"direction")
683
== u"out"):
684
arg.setAttribute(u"name", u"props")
685
xmlstring = document.toxml(u"utf-8")
898
if (if_tag.getAttribute("name")
899
== "org.freedesktop.DBus.Properties"):
900
for cn in if_tag.getElementsByTagName("method"):
901
if cn.getAttribute("name") == "Get":
902
for arg in cn.getElementsByTagName("arg"):
903
if (arg.getAttribute("direction")
904
== "out"):
905
arg.setAttribute("name", "value")
906
elif cn.getAttribute("name") == "GetAll":
907
for arg in cn.getElementsByTagName("arg"):
908
if (arg.getAttribute("direction")
909
== "out"):
910
arg.setAttribute("name", "props")
911
xmlstring = document.toxml("utf-8")
686
912
document.unlink()
687
913
except (AttributeError, xml.dom.DOMException,
688
xml.parsers.expat.ExpatError), error:
689
logger.error(u"Failed to override Introspection method",
914
xml.parsers.expat.ExpatError) as error:
915
logger.error("Failed to override Introspection method",
690
916
error)
691
917
return xmlstring
692
918
693
919
920
def datetime_to_dbus (dt, variant_level=0):
921
"""Convert a UTC datetime.datetime() to a D-Bus type."""
922
if dt is None:
923
return dbus.String("", variant_level = variant_level)
924
return dbus.String(dt.isoformat(),
925
variant_level=variant_level)
926
927
928
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
929
.__metaclass__):
930
"""Applied to an empty subclass of a D-Bus object, this metaclass
931
will add additional D-Bus attributes matching a certain pattern.
932
"""
933
def __new__(mcs, name, bases, attr):
934
# Go through all the base classes which could have D-Bus
935
# methods, signals, or properties in them
936
for base in (b for b in bases
937
if issubclass(b, dbus.service.Object)):
938
# Go though all attributes of the base class
939
for attrname, attribute in inspect.getmembers(base):
940
# Ignore non-D-Bus attributes, and D-Bus attributes
941
# with the wrong interface name
942
if (not hasattr(attribute, "_dbus_interface")
943
or not attribute._dbus_interface
944
.startswith("se.recompile.Mandos")):
945
continue
946
# Create an alternate D-Bus interface name based on
947
# the current name
948
alt_interface = (attribute._dbus_interface
949
.replace("se.recompile.Mandos",
950
"se.bsnet.fukt.Mandos"))
951
# Is this a D-Bus signal?
952
if getattr(attribute, "_dbus_is_signal", False):
953
# Extract the original non-method function by
954
# black magic
955
nonmethod_func = (dict(
956
zip(attribute.func_code.co_freevars,
957
attribute.__closure__))["func"]
958
.cell_contents)
959
# Create a new, but exactly alike, function
960
# object, and decorate it to be a new D-Bus signal
961
# with the alternate D-Bus interface name
962
new_function = (dbus.service.signal
963
(alt_interface,
964
attribute._dbus_signature)
965
(types.FunctionType(
966
nonmethod_func.func_code,
967
nonmethod_func.func_globals,
968
nonmethod_func.func_name,
969
nonmethod_func.func_defaults,
970
nonmethod_func.func_closure)))
971
# Define a creator of a function to call both the
972
# old and new functions, so both the old and new
973
# signals gets sent when the function is called
974
def fixscope(func1, func2):
975
"""This function is a scope container to pass
976
func1 and func2 to the "call_both" function
977
outside of its arguments"""
978
def call_both(*args, **kwargs):
979
"""This function will emit two D-Bus
980
signals by calling func1 and func2"""
981
func1(*args, **kwargs)
982
func2(*args, **kwargs)
983
return call_both
984
# Create the "call_both" function and add it to
985
# the class
986
attr[attrname] = fixscope(attribute,
987
new_function)
988
# Is this a D-Bus method?
989
elif getattr(attribute, "_dbus_is_method", False):
990
# Create a new, but exactly alike, function
991
# object. Decorate it to be a new D-Bus method
992
# with the alternate D-Bus interface name. Add it
993
# to the class.
994
attr[attrname] = (dbus.service.method
995
(alt_interface,
996
attribute._dbus_in_signature,
997
attribute._dbus_out_signature)
998
(types.FunctionType
999
(attribute.func_code,
1000
attribute.func_globals,
1001
attribute.func_name,
1002
attribute.func_defaults,
1003
attribute.func_closure)))
1004
# Is this a D-Bus property?
1005
elif getattr(attribute, "_dbus_is_property", False):
1006
# Create a new, but exactly alike, function
1007
# object, and decorate it to be a new D-Bus
1008
# property with the alternate D-Bus interface
1009
# name. Add it to the class.
1010
attr[attrname] = (dbus_service_property
1011
(alt_interface,
1012
attribute._dbus_signature,
1013
attribute._dbus_access,
1014
attribute
1015
._dbus_get_args_options
1016
["byte_arrays"])
1017
(types.FunctionType
1018
(attribute.func_code,
1019
attribute.func_globals,
1020
attribute.func_name,
1021
attribute.func_defaults,
1022
attribute.func_closure)))
1023
return type.__new__(mcs, name, bases, attr)
1024
1025
694
1026
class ClientDBus(Client, DBusObjectWithProperties):
695
1027
"""A Client class using D-Bus
696
1028
698
1030
dbus_object_path: dbus.ObjectPath
699
1031
bus: dbus.SystemBus()
700
1032
"""
1033
1034
runtime_expansions = (Client.runtime_expansions
1035
+ ("dbus_object_path",))
1036
701
1037
# dbus.service.Object doesn't use super(), so we can't either.
702
1038
703
1039
def __init__(self, bus = None, *args, **kwargs):
704
self._approvals_pending = 0
705
1040
self.bus = bus
706
1041
Client.__init__(self, *args, **kwargs)
1042
self._approvals_pending = 0
1043
1044
self._approvals_pending = 0
707
1045
# Only now, when this client is initialized, can it show up on
708
1046
# the D-Bus
1047
client_object_name = unicode(self.name).translate(
1048
{ord("."): ord("_"),
1049
ord("-"): ord("_")})
709
1050
self.dbus_object_path = (dbus.ObjectPath
710
(u"/clients/"
711
+ self.name.replace(u".", u"_")))
1051
("/clients/" + client_object_name))
712
1052
DBusObjectWithProperties.__init__(self, self.bus,
713
1053
self.dbus_object_path)
714
715
def _get_approvals_pending(self):
716
return self._approvals_pending
717
def _set_approvals_pending(self, value):
718
old_value = self._approvals_pending
719
self._approvals_pending = value
720
bval = bool(value)
721
if (hasattr(self, "dbus_object_path")
722
and bval is not bool(old_value)):
723
dbus_bool = dbus.Boolean(bval, variant_level=1)
724
self.PropertyChanged(dbus.String(u"approved_pending"),
725
dbus_bool)
726
727
approvals_pending = property(_get_approvals_pending,
728
_set_approvals_pending)
729
del _get_approvals_pending, _set_approvals_pending
730
731
@staticmethod
732
def _datetime_to_dbus(dt, variant_level=0):
733
"""Convert a UTC datetime.datetime() to a D-Bus type."""
734
return dbus.String(dt.isoformat(),
735
variant_level=variant_level)
736
737
def enable(self):
738
oldstate = getattr(self, u"enabled", False)
739
r = Client.enable(self)
740
if oldstate != self.enabled:
741
# Emit D-Bus signals
742
self.PropertyChanged(dbus.String(u"enabled"),
743
dbus.Boolean(True, variant_level=1))
744
self.PropertyChanged(
745
dbus.String(u"last_enabled"),
746
self._datetime_to_dbus(self.last_enabled,
747
variant_level=1))
748
return r
749
750
def disable(self, quiet = False):
751
oldstate = getattr(self, u"enabled", False)
752
r = Client.disable(self, quiet=quiet)
753
if not quiet and oldstate != self.enabled:
754
# Emit D-Bus signal
755
self.PropertyChanged(dbus.String(u"enabled"),
756
dbus.Boolean(False, variant_level=1))
757
return r
1054
1055
def notifychangeproperty(transform_func,
1056
dbus_name, type_func=lambda x: x,
1057
variant_level=1):
1058
""" Modify a variable so that it's a property which announces
1059
its changes to DBus.
1060
1061
transform_fun: Function that takes a value and a variant_level
1062
and transforms it to a D-Bus type.
1063
dbus_name: D-Bus name of the variable
1064
type_func: Function that transform the value before sending it
1065
to the D-Bus. Default: no transform
1066
variant_level: D-Bus variant level. Default: 1
1067
"""
1068
attrname = "_{0}".format(dbus_name)
1069
def setter(self, value):
1070
if hasattr(self, "dbus_object_path"):
1071
if (not hasattr(self, attrname) or
1072
type_func(getattr(self, attrname, None))
1073
!= type_func(value)):
1074
dbus_value = transform_func(type_func(value),
1075
variant_level
1076
=variant_level)
1077
self.PropertyChanged(dbus.String(dbus_name),
1078
dbus_value)
1079
setattr(self, attrname, value)
1080
1081
return property(lambda self: getattr(self, attrname), setter)
1082
1083
1084
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1085
approvals_pending = notifychangeproperty(dbus.Boolean,
1086
"ApprovalPending",
1087
type_func = bool)
1088
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1089
last_enabled = notifychangeproperty(datetime_to_dbus,
1090
"LastEnabled")
1091
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1092
type_func = lambda checker:
1093
checker is not None)
1094
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1095
"LastCheckedOK")
1096
last_approval_request = notifychangeproperty(
1097
datetime_to_dbus, "LastApprovalRequest")
1098
approved_by_default = notifychangeproperty(dbus.Boolean,
1099
"ApprovedByDefault")
1100
approval_delay = notifychangeproperty(dbus.UInt64,
1101
"ApprovalDelay",
1102
type_func =
1103
timedelta_to_milliseconds)
1104
approval_duration = notifychangeproperty(
1105
dbus.UInt64, "ApprovalDuration",
1106
type_func = timedelta_to_milliseconds)
1107
host = notifychangeproperty(dbus.String, "Host")
1108
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1109
type_func =
1110
timedelta_to_milliseconds)
1111
extended_timeout = notifychangeproperty(
1112
dbus.UInt64, "ExtendedTimeout",
1113
type_func = timedelta_to_milliseconds)
1114
interval = notifychangeproperty(dbus.UInt64,
1115
"Interval",
1116
type_func =
1117
timedelta_to_milliseconds)
1118
checker_command = notifychangeproperty(dbus.String, "Checker")
1119
1120
del notifychangeproperty
758
1121
759
1122
def __del__(self, *args, **kwargs):
760
1123
try:
761
1124
self.remove_from_connection()
762
1125
except LookupError:
763
1126
pass
764
if hasattr(DBusObjectWithProperties, u"__del__"):
1127
if hasattr(DBusObjectWithProperties, "__del__"):
765
1128
DBusObjectWithProperties.__del__(self, *args, **kwargs)
766
1129
Client.__del__(self, *args, **kwargs)
767
1130
769
1132
*args, **kwargs):
770
1133
self.checker_callback_tag = None
771
1134
self.checker = None
772
# Emit D-Bus signal
773
self.PropertyChanged(dbus.String(u"checker_running"),
774
dbus.Boolean(False, variant_level=1))
775
1135
if os.WIFEXITED(condition):
776
1136
exitstatus = os.WEXITSTATUS(condition)
777
1137
# Emit D-Bus signal
787
1147
return Client.checker_callback(self, pid, condition, command,
788
1148
*args, **kwargs)
789
1149
790
def checked_ok(self, *args, **kwargs):
791
r = Client.checked_ok(self, *args, **kwargs)
792
# Emit D-Bus signal
793
self.PropertyChanged(
794
dbus.String(u"last_checked_ok"),
795
(self._datetime_to_dbus(self.last_checked_ok,
796
variant_level=1)))
797
return r
798
799
1150
def start_checker(self, *args, **kwargs):
800
1151
old_checker = self.checker
801
1152
if self.checker is not None:
808
1159
and old_checker_pid != self.checker.pid):
809
1160
# Emit D-Bus signal
810
1161
self.CheckerStarted(self.current_checker_command)
811
self.PropertyChanged(
812
dbus.String(u"checker_running"),
813
dbus.Boolean(True, variant_level=1))
814
1162
return r
815
1163
816
def stop_checker(self, *args, **kwargs):
817
old_checker = getattr(self, u"checker", None)
818
r = Client.stop_checker(self, *args, **kwargs)
819
if (old_checker is not None
820
and getattr(self, u"checker", None) is None):
821
self.PropertyChanged(dbus.String(u"checker_running"),
822
dbus.Boolean(False, variant_level=1))
823
return r
824
825
1164
def _reset_approved(self):
826
self._approved = None
1165
self.approved = None
827
1166
return False
828
1167
829
1168
def approve(self, value=True):
830
1169
self.send_changedstate()
831
self._approved = value
832
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration),
1170
self.approved = value
1171
gobject.timeout_add(timedelta_to_milliseconds
1172
(self.approval_duration),
833
1173
self._reset_approved)
834
1174
835
1175
836
1176
## D-Bus methods, signals & properties
837
_interface = u"se.bsnet.fukt.Mandos.Client"
1177
_interface = "se.recompile.Mandos.Client"
838
1178
839
1179
## Signals
840
1180
841
1181
# CheckerCompleted - signal
842
@dbus.service.signal(_interface, signature=u"nxs")
1182
@dbus.service.signal(_interface, signature="nxs")
843
1183
def CheckerCompleted(self, exitcode, waitstatus, command):
844
1184
"D-Bus signal"
845
1185
pass
846
1186
847
1187
# CheckerStarted - signal
848
@dbus.service.signal(_interface, signature=u"s")
1188
@dbus.service.signal(_interface, signature="s")
849
1189
def CheckerStarted(self, command):
850
1190
"D-Bus signal"
851
1191
pass
852
1192
853
1193
# PropertyChanged - signal
854
@dbus.service.signal(_interface, signature=u"sv")
1194
@dbus.service.signal(_interface, signature="sv")
855
1195
def PropertyChanged(self, property, value):
856
1196
"D-Bus signal"
857
1197
pass
866
1206
pass
867
1207
868
1208
# Rejected - signal
869
@dbus.service.signal(_interface, signature=u"s")
1209
@dbus.service.signal(_interface, signature="s")
870
1210
def Rejected(self, reason):
871
1211
"D-Bus signal"
872
1212
pass
873
1213
874
1214
# NeedApproval - signal
875
@dbus.service.signal(_interface, signature=u"db")
1215
@dbus.service.signal(_interface, signature="tb")
876
1216
def NeedApproval(self, timeout, default):
877
1217
"D-Bus signal"
1218
return self.need_approval()
1219
1220
# NeRwequest - signal
1221
@dbus.service.signal(_interface, signature="s")
1222
def NewRequest(self, ip):
1223
"""D-Bus signal
1224
Is sent after a client request a password.
1225
"""
878
1226
pass
879
1227
880
1228
## Methods
881
1229
882
1230
# Approve - method
883
@dbus.service.method(_interface, in_signature=u"b")
1231
@dbus.service.method(_interface, in_signature="b")
884
1232
def Approve(self, value):
885
1233
self.approve(value)
886
1234
887
1235
# CheckedOK - method
888
1236
@dbus.service.method(_interface)
889
1237
def CheckedOK(self):
890
return self.checked_ok()
1238
self.checked_ok()
891
1239
892
1240
# Enable - method
893
1241
@dbus.service.method(_interface)
914
1262
915
1263
## Properties
916
1264
917
# approved_pending - property
918
@dbus_service_property(_interface, signature=u"b", access=u"read")
919
def approved_pending_dbus_property(self):
1265
# ApprovalPending - property
1266
@dbus_service_property(_interface, signature="b", access="read")
1267
def ApprovalPending_dbus_property(self):
920
1268
return dbus.Boolean(bool(self.approvals_pending))
921
1269
922
# approved_by_default - property
923
@dbus_service_property(_interface, signature=u"b",
924
access=u"readwrite")
925
def approved_by_default_dbus_property(self):
926
return dbus.Boolean(self.approved_by_default)
927
928
# approved_delay - property
929
@dbus_service_property(_interface, signature=u"t",
930
access=u"readwrite")
931
def approved_delay_dbus_property(self):
932
return dbus.UInt64(self.approved_delay_milliseconds())
933
934
# approved_duration - property
935
@dbus_service_property(_interface, signature=u"t",
936
access=u"readwrite")
937
def approved_duration_dbus_property(self):
938
return dbus.UInt64(self._timedelta_to_milliseconds(
939
self.approved_duration))
940
941
# name - property
942
@dbus_service_property(_interface, signature=u"s", access=u"read")
943
def name_dbus_property(self):
1270
# ApprovedByDefault - property
1271
@dbus_service_property(_interface, signature="b",
1272
access="readwrite")
1273
def ApprovedByDefault_dbus_property(self, value=None):
1274
if value is None: # get
1275
return dbus.Boolean(self.approved_by_default)
1276
self.approved_by_default = bool(value)
1277
1278
# ApprovalDelay - property
1279
@dbus_service_property(_interface, signature="t",
1280
access="readwrite")
1281
def ApprovalDelay_dbus_property(self, value=None):
1282
if value is None: # get
1283
return dbus.UInt64(self.approval_delay_milliseconds())
1284
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1285
1286
# ApprovalDuration - property
1287
@dbus_service_property(_interface, signature="t",
1288
access="readwrite")
1289
def ApprovalDuration_dbus_property(self, value=None):
1290
if value is None: # get
1291
return dbus.UInt64(timedelta_to_milliseconds(
1292
self.approval_duration))
1293
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1294
1295
# Name - property
1296
@dbus_service_property(_interface, signature="s", access="read")
1297
def Name_dbus_property(self):
944
1298
return dbus.String(self.name)
945
1299
946
# fingerprint - property
947
@dbus_service_property(_interface, signature=u"s", access=u"read")
948
def fingerprint_dbus_property(self):
1300
# Fingerprint - property
1301
@dbus_service_property(_interface, signature="s", access="read")
1302
def Fingerprint_dbus_property(self):
949
1303
return dbus.String(self.fingerprint)
950
1304
951
# host - property
952
@dbus_service_property(_interface, signature=u"s",
953
access=u"readwrite")
954
def host_dbus_property(self, value=None):
1305
# Host - property
1306
@dbus_service_property(_interface, signature="s",
1307
access="readwrite")
1308
def Host_dbus_property(self, value=None):
955
1309
if value is None: # get
956
1310
return dbus.String(self.host)
957
self.host = value
958
# Emit D-Bus signal
959
self.PropertyChanged(dbus.String(u"host"),
960
dbus.String(value, variant_level=1))
961
962
# created - property
963
@dbus_service_property(_interface, signature=u"s", access=u"read")
964
def created_dbus_property(self):
965
return dbus.String(self._datetime_to_dbus(self.created))
966
967
# last_enabled - property
968
@dbus_service_property(_interface, signature=u"s", access=u"read")
969
def last_enabled_dbus_property(self):
970
if self.last_enabled is None:
971
return dbus.String(u"")
972
return dbus.String(self._datetime_to_dbus(self.last_enabled))
973
974
# enabled - property
975
@dbus_service_property(_interface, signature=u"b",
976
access=u"readwrite")
977
def enabled_dbus_property(self, value=None):
1311
self.host = unicode(value)
1312
1313
# Created - property
1314
@dbus_service_property(_interface, signature="s", access="read")
1315
def Created_dbus_property(self):
1316
return datetime_to_dbus(self.created)
1317
1318
# LastEnabled - property
1319
@dbus_service_property(_interface, signature="s", access="read")
1320
def LastEnabled_dbus_property(self):
1321
return datetime_to_dbus(self.last_enabled)
1322
1323
# Enabled - property
1324
@dbus_service_property(_interface, signature="b",
1325
access="readwrite")
1326
def Enabled_dbus_property(self, value=None):
978
1327
if value is None: # get
979
1328
return dbus.Boolean(self.enabled)
980
1329
if value:
982
1331
else:
983
1332
self.disable()
984
1333
985
# last_checked_ok - property
986
@dbus_service_property(_interface, signature=u"s",
987
access=u"readwrite")
988
def last_checked_ok_dbus_property(self, value=None):
1334
# LastCheckedOK - property
1335
@dbus_service_property(_interface, signature="s",
1336
access="readwrite")
1337
def LastCheckedOK_dbus_property(self, value=None):
989
1338
if value is not None:
990
1339
self.checked_ok()
991
1340
return
992
if self.last_checked_ok is None:
993
return dbus.String(u"")
994
return dbus.String(self._datetime_to_dbus(self
995
.last_checked_ok))
996
997
# timeout - property
998
@dbus_service_property(_interface, signature=u"t",
999
access=u"readwrite")
1000
def timeout_dbus_property(self, value=None):
1341
return datetime_to_dbus(self.last_checked_ok)
1342
1343
# Expires - property
1344
@dbus_service_property(_interface, signature="s", access="read")
1345
def Expires_dbus_property(self):
1346
return datetime_to_dbus(self.expires)
1347
1348
# LastApprovalRequest - property
1349
@dbus_service_property(_interface, signature="s", access="read")
1350
def LastApprovalRequest_dbus_property(self):
1351
return datetime_to_dbus(self.last_approval_request)
1352
1353
# Timeout - property
1354
@dbus_service_property(_interface, signature="t",
1355
access="readwrite")
1356
def Timeout_dbus_property(self, value=None):
1001
1357
if value is None: # get
1002
1358
return dbus.UInt64(self.timeout_milliseconds())
1003
1359
self.timeout = datetime.timedelta(0, 0, 0, value)
1004
# Emit D-Bus signal
1005
self.PropertyChanged(dbus.String(u"timeout"),
1006
dbus.UInt64(value, variant_level=1))
1007
if getattr(self, u"disable_initiator_tag", None) is None:
1360
if getattr(self, "disable_initiator_tag", None) is None:
1008
1361
return
1009
1362
# Reschedule timeout
1010
1363
gobject.source_remove(self.disable_initiator_tag)
1011
1364
self.disable_initiator_tag = None
1012
time_to_die = (self.
1013
_timedelta_to_milliseconds((self
1014
.last_checked_ok
1015
+ self.timeout)
1016
- datetime.datetime
1017
.utcnow()))
1365
self.expires = None
1366
time_to_die = timedelta_to_milliseconds((self
1367
.last_checked_ok
1368
+ self.timeout)
1369
- datetime.datetime
1370
.utcnow())
1018
1371
if time_to_die <= 0:
1019
1372
# The timeout has passed
1020
1373
self.disable()
1021
1374
else:
1375
self.expires = (datetime.datetime.utcnow()
1376
+ datetime.timedelta(milliseconds =
1377
time_to_die))
1022
1378
self.disable_initiator_tag = (gobject.timeout_add
1023
1379
(time_to_die, self.disable))
1024
1380
1025
# interval - property
1026
@dbus_service_property(_interface, signature=u"t",
1027
access=u"readwrite")
1028
def interval_dbus_property(self, value=None):
1381
# ExtendedTimeout - property
1382
@dbus_service_property(_interface, signature="t",
1383
access="readwrite")
1384
def ExtendedTimeout_dbus_property(self, value=None):
1385
if value is None: # get
1386
return dbus.UInt64(self.extended_timeout_milliseconds())
1387
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1388
1389
# Interval - property
1390
@dbus_service_property(_interface, signature="t",
1391
access="readwrite")
1392
def Interval_dbus_property(self, value=None):
1029
1393
if value is None: # get
1030
1394
return dbus.UInt64(self.interval_milliseconds())
1031
1395
self.interval = datetime.timedelta(0, 0, 0, value)
1032
# Emit D-Bus signal
1033
self.PropertyChanged(dbus.String(u"interval"),
1034
dbus.UInt64(value, variant_level=1))
1035
if getattr(self, u"checker_initiator_tag", None) is None:
1396
if getattr(self, "checker_initiator_tag", None) is None:
1036
1397
return
1037
# Reschedule checker run
1038
gobject.source_remove(self.checker_initiator_tag)
1039
self.checker_initiator_tag = (gobject.timeout_add
1040
(value, self.start_checker))
1041
self.start_checker() # Start one now, too
1042
1043
# checker - property
1044
@dbus_service_property(_interface, signature=u"s",
1045
access=u"readwrite")
1046
def checker_dbus_property(self, value=None):
1398
if self.enabled:
1399
# Reschedule checker run
1400
gobject.source_remove(self.checker_initiator_tag)
1401
self.checker_initiator_tag = (gobject.timeout_add
1402
(value, self.start_checker))
1403
self.start_checker() # Start one now, too
1404
1405
# Checker - property
1406
@dbus_service_property(_interface, signature="s",
1407
access="readwrite")
1408
def Checker_dbus_property(self, value=None):
1047
1409
if value is None: # get
1048
1410
return dbus.String(self.checker_command)
1049
self.checker_command = value
1050
# Emit D-Bus signal
1051
self.PropertyChanged(dbus.String(u"checker"),
1052
dbus.String(self.checker_command,
1053
variant_level=1))
1411
self.checker_command = unicode(value)
1054
1412
1055
# checker_running - property
1056
@dbus_service_property(_interface, signature=u"b",
1057
access=u"readwrite")
1058
def checker_running_dbus_property(self, value=None):
1413
# CheckerRunning - property
1414
@dbus_service_property(_interface, signature="b",
1415
access="readwrite")
1416
def CheckerRunning_dbus_property(self, value=None):
1059
1417
if value is None: # get
1060
1418
return dbus.Boolean(self.checker is not None)
1061
1419
if value:
1063
1421
else:
1064
1422
self.stop_checker()
1065
1423
1066
# object_path - property
1067
@dbus_service_property(_interface, signature=u"o", access=u"read")
1068
def object_path_dbus_property(self):
1424
# ObjectPath - property
1425
@dbus_service_property(_interface, signature="o", access="read")
1426
def ObjectPath_dbus_property(self):
1069
1427
return self.dbus_object_path # is already a dbus.ObjectPath
1070
1428
1071
# secret = property
1072
@dbus_service_property(_interface, signature=u"ay",
1073
access=u"write", byte_arrays=True)
1074
def secret_dbus_property(self, value):
1429
# Secret = property
1430
@dbus_service_property(_interface, signature="ay",
1431
access="write", byte_arrays=True)
1432
def Secret_dbus_property(self, value):
1075
1433
self.secret = str(value)
1076
1434
1077
1435
del _interface
1083
1441
self._pipe.send(('init', fpr, address))
1084
1442
if not self._pipe.recv():
1085
1443
raise KeyError()
1086
1444
1087
1445
def __getattribute__(self, name):
1088
if(name == '_pipe'):
1446
if name == '_pipe':
1089
1447
return super(ProxyClient, self).__getattribute__(name)
1090
1448
self._pipe.send(('getattr', name))
1091
1449
data = self._pipe.recv()
1096
1454
self._pipe.send(('funcall', name, args, kwargs))
1097
1455
return self._pipe.recv()[1]
1098
1456
return func
1099
1457
1100
1458
def __setattr__(self, name, value):
1101
if(name == '_pipe'):
1459
if name == '_pipe':
1102
1460
return super(ProxyClient, self).__setattr__(name, value)
1103
1461
self._pipe.send(('setattr', name, value))
1104
1462
1105
1463
1464
class ClientDBusTransitional(ClientDBus):
1465
__metaclass__ = AlternateDBusNamesMetaclass
1466
1467
1106
1468
class ClientHandler(socketserver.BaseRequestHandler, object):
1107
1469
"""A class to handle client connections.
1108
1470
1111
1473
1112
1474
def handle(self):
1113
1475
with contextlib.closing(self.server.child_pipe) as child_pipe:
1114
logger.info(u"TCP connection from: %s",
1476
logger.info("TCP connection from: %s",
1115
1477
unicode(self.client_address))
1116
logger.debug(u"Pipe FD: %d",
1478
logger.debug("Pipe FD: %d",
1117
1479
self.server.child_pipe.fileno())
1118
1480
1119
1481
session = (gnutls.connection
1120
1482
.ClientSession(self.request,
1121
1483
gnutls.connection
1122
1484
.X509Credentials()))
1123
1485
1124
1486
# Note: gnutls.connection.X509Credentials is really a
1125
1487
# generic GnuTLS certificate credentials object so long as
1126
1488
# no X.509 keys are added to it. Therefore, we can use it
1127
1489
# here despite using OpenPGP certificates.
1128
1129
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1130
# u"+AES-256-CBC", u"+SHA1",
1131
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1132
# u"+DHE-DSS"))
1490
1491
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1492
# "+AES-256-CBC", "+SHA1",
1493
# "+COMP-NULL", "+CTYPE-OPENPGP",
1494
# "+DHE-DSS"))
1133
1495
# Use a fallback default, since this MUST be set.
1134
1496
priority = self.server.gnutls_priority
1135
1497
if priority is None:
1136
priority = u"NORMAL"
1498
priority = "NORMAL"
1137
1499
(gnutls.library.functions
1138
1500
.gnutls_priority_set_direct(session._c_object,
1139
1501
priority, None))
1140
1502
1141
1503
# Start communication using the Mandos protocol
1142
1504
# Get protocol number
1143
1505
line = self.request.makefile().readline()
1144
logger.debug(u"Protocol version: %r", line)
1506
logger.debug("Protocol version: %r", line)
1145
1507
try:
1146
1508
if int(line.strip().split()[0]) > 1:
1147
1509
raise RuntimeError
1148
except (ValueError, IndexError, RuntimeError), error:
1149
logger.error(u"Unknown protocol version: %s", error)
1510
except (ValueError, IndexError, RuntimeError) as error:
1511
logger.error("Unknown protocol version: %s", error)
1150
1512
return
1151
1513
1152
1514
# Start GnuTLS connection
1153
1515
try:
1154
1516
session.handshake()
1155
except gnutls.errors.GNUTLSError, error:
1156
logger.warning(u"Handshake failed: %s", error)
1517
except gnutls.errors.GNUTLSError as error:
1518
logger.warning("Handshake failed: %s", error)
1157
1519
# Do not run session.bye() here: the session is not
1158
1520
# established. Just abandon the request.
1159
1521
return
1160
logger.debug(u"Handshake succeeded")
1161
1522
logger.debug("Handshake succeeded")
1523
1162
1524
approval_required = False
1163
1525
try:
1164
1526
try:
1165
1527
fpr = self.fingerprint(self.peer_certificate
1166
1528
(session))
1167
except (TypeError, gnutls.errors.GNUTLSError), error:
1168
logger.warning(u"Bad certificate: %s", error)
1529
except (TypeError,
1530
gnutls.errors.GNUTLSError) as error:
1531
logger.warning("Bad certificate: %s", error)
1169
1532
return
1170
logger.debug(u"Fingerprint: %s", fpr)
1171
1533
logger.debug("Fingerprint: %s", fpr)
1534
1172
1535
try:
1173
1536
client = ProxyClient(child_pipe, fpr,
1174
1537
self.client_address)
1175
1538
except KeyError:
1176
1539
return
1177
1540
1178
if client.approved_delay:
1179
delay = client.approved_delay
1541
if self.server.use_dbus:
1542
# Emit D-Bus signal
1543
client.NewRequest(str(self.client_address))
1544
1545
if client.approval_delay:
1546
delay = client.approval_delay
1180
1547
client.approvals_pending += 1
1181
1548
approval_required = True
1182
1549
1183
1550
while True:
1184
1551
if not client.enabled:
1185
logger.warning(u"Client %s is disabled",
1552
logger.info("Client %s is disabled",
1186
1553
client.name)
1187
1554
if self.server.use_dbus:
1188
1555
# Emit D-Bus signal
1189
client.Rejected("Disabled")
1556
client.Rejected("Disabled")
1190
1557
return
1191
1558
1192
if client._approved or not client.approved_delay:
1559
if client.approved or not client.approval_delay:
1193
1560
#We are approved or approval is disabled
1194
1561
break
1195
elif client._approved is None:
1196
logger.info(u"Client %s need approval",
1562
elif client.approved is None:
1563
logger.info("Client %s needs approval",
1197
1564
client.name)
1198
1565
if self.server.use_dbus:
1199
1566
# Emit D-Bus signal
1200
1567
client.NeedApproval(
1201
client.approved_delay_milliseconds(),
1568
client.approval_delay_milliseconds(),
1202
1569
client.approved_by_default)
1203
1570
else:
1204
logger.warning(u"Client %s was not approved",
1571
logger.warning("Client %s was not approved",
1205
1572
client.name)
1206
1573
if self.server.use_dbus:
1207
1574
# Emit D-Bus signal
1208
client.Rejected("Disapproved")
1575
client.Rejected("Denied")
1209
1576
return
1210
1577
1211
1578
#wait until timeout or approved
1212
#x = float(client._timedelta_to_milliseconds(delay))
1213
1579
time = datetime.datetime.now()
1214
1580
client.changedstate.acquire()
1215
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1581
(client.changedstate.wait
1582
(float(client.timedelta_to_milliseconds(delay)
1583
/ 1000)))
1216
1584
client.changedstate.release()
1217
1585
time2 = datetime.datetime.now()
1218
1586
if (time2 - time) >= delay:
1222
1590
client.name)
1223
1591
if self.server.use_dbus:
1224
1592
# Emit D-Bus signal
1225
client.Rejected("Time out")
1593
client.Rejected("Approval timed out")
1226
1594
return
1227
1595
else:
1228
1596
break
1233
1601
while sent_size < len(client.secret):
1234
1602
try:
1235
1603
sent = session.send(client.secret[sent_size:])
1236
except (gnutls.errors.GNUTLSError), error:
1604
except gnutls.errors.GNUTLSError as error:
1237
1605
logger.warning("gnutls send failed")
1238
1606
return
1239
logger.debug(u"Sent: %d, remaining: %d",
1607
logger.debug("Sent: %d, remaining: %d",
1240
1608
sent, len(client.secret)
1241
1609
- (sent_size + sent))
1242
1610
sent_size += sent
1243
1244
logger.info(u"Sending secret to %s", client.name)
1245
# bump the timeout as if seen
1246
client.checked_ok()
1611
1612
logger.info("Sending secret to %s", client.name)
1613
# bump the timeout using extended_timeout
1614
client.checked_ok(client.extended_timeout)
1247
1615
if self.server.use_dbus:
1248
1616
# Emit D-Bus signal
1249
1617
client.GotSecret()
1253
1621
client.approvals_pending -= 1
1254
1622
try:
1255
1623
session.bye()
1256
except (gnutls.errors.GNUTLSError), error:
1257
logger.warning("gnutls bye failed")
1624
except gnutls.errors.GNUTLSError as error:
1625
logger.warning("GnuTLS bye failed")
1258
1626
1259
1627
@staticmethod
1260
1628
def peer_certificate(session):
1270
1638
.gnutls_certificate_get_peers
1271
1639
(session._c_object, ctypes.byref(list_size)))
1272
1640
if not bool(cert_list) and list_size.value != 0:
1273
raise gnutls.errors.GNUTLSError(u"error getting peer"
1274
u" certificate")
1641
raise gnutls.errors.GNUTLSError("error getting peer"
1642
" certificate")
1275
1643
if list_size.value == 0:
1276
1644
return None
1277
1645
cert = cert_list[0]
1303
1671
if crtverify.value != 0:
1304
1672
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1305
1673
raise (gnutls.errors.CertificateSecurityError
1306
(u"Verify failed"))
1674
("Verify failed"))
1307
1675
# New buffer for the fingerprint
1308
1676
buf = ctypes.create_string_buffer(20)
1309
1677
buf_len = ctypes.c_size_t()
1316
1684
# Convert the buffer to a Python bytestring
1317
1685
fpr = ctypes.string_at(buf, buf_len.value)
1318
1686
# Convert the bytestring to hexadecimal notation
1319
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1687
hex_fpr = binascii.hexlify(fpr).upper()
1320
1688
return hex_fpr
1321
1689
1322
1690
1325
1693
def sub_process_main(self, request, address):
1326
1694
try:
1327
1695
self.finish_request(request, address)
1328
except:
1696
except Exception:
1329
1697
self.handle_error(request, address)
1330
1698
self.close_request(request)
1331
1699
1332
1700
def process_request(self, request, address):
1333
1701
"""Start a new process to process the request."""
1334
multiprocessing.Process(target = self.sub_process_main,
1335
args = (request, address)).start()
1702
proc = multiprocessing.Process(target = self.sub_process_main,
1703
args = (request,
1704
address))
1705
proc.start()
1706
return proc
1707
1336
1708
1337
1709
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1338
1710
""" adds a pipe to the MixIn """
1342
1714
This function creates a new pipe in self.pipe
1343
1715
"""
1344
1716
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1345
1346
super(MultiprocessingMixInWithPipe,
1347
self).process_request(request, client_address)
1717
1718
proc = MultiprocessingMixIn.process_request(self, request,
1719
client_address)
1348
1720
self.child_pipe.close()
1349
self.add_pipe(parent_pipe)
1350
1351
def add_pipe(self, parent_pipe):
1721
self.add_pipe(parent_pipe, proc)
1722
1723
def add_pipe(self, parent_pipe, proc):
1352
1724
"""Dummy function; override as necessary"""
1353
pass
1725
raise NotImplementedError
1726
1354
1727
1355
1728
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1356
1729
socketserver.TCPServer, object):
1374
1747
bind to an address or port if they were not specified."""
1375
1748
if self.interface is not None:
1376
1749
if SO_BINDTODEVICE is None:
1377
logger.error(u"SO_BINDTODEVICE does not exist;"
1378
u" cannot bind to interface %s",
1750
logger.error("SO_BINDTODEVICE does not exist;"
1751
" cannot bind to interface %s",
1379
1752
self.interface)
1380
1753
else:
1381
1754
try:
1382
1755
self.socket.setsockopt(socket.SOL_SOCKET,
1383
1756
SO_BINDTODEVICE,
1384
1757
str(self.interface
1385
+ u'\0'))
1386
except socket.error, error:
1758
+ '\0'))
1759
except socket.error as error:
1387
1760
if error[0] == errno.EPERM:
1388
logger.error(u"No permission to"
1389
u" bind to interface %s",
1761
logger.error("No permission to"
1762
" bind to interface %s",
1390
1763
self.interface)
1391
1764
elif error[0] == errno.ENOPROTOOPT:
1392
logger.error(u"SO_BINDTODEVICE not available;"
1393
u" cannot bind to interface %s",
1765
logger.error("SO_BINDTODEVICE not available;"
1766
" cannot bind to interface %s",
1394
1767
self.interface)
1395
1768
else:
1396
1769
raise
1398
1771
if self.server_address[0] or self.server_address[1]:
1399
1772
if not self.server_address[0]:
1400
1773
if self.address_family == socket.AF_INET6:
1401
any_address = u"::" # in6addr_any
1774
any_address = "::" # in6addr_any
1402
1775
else:
1403
1776
any_address = socket.INADDR_ANY
1404
1777
self.server_address = (any_address,
1431
1804
self.enabled = False
1432
1805
self.clients = clients
1433
1806
if self.clients is None:
1434
self.clients = set()
1807
self.clients = {}
1435
1808
self.use_dbus = use_dbus
1436
1809
self.gnutls_priority = gnutls_priority
1437
1810
IPv6_TCPServer.__init__(self, server_address,
1441
1814
def server_activate(self):
1442
1815
if self.enabled:
1443
1816
return socketserver.TCPServer.server_activate(self)
1817
1444
1818
def enable(self):
1445
1819
self.enabled = True
1446
def add_pipe(self, parent_pipe):
1820
1821
def add_pipe(self, parent_pipe, proc):
1447
1822
# Call "handle_ipc" for both data and EOF events
1448
1823
gobject.io_add_watch(parent_pipe.fileno(),
1449
1824
gobject.IO_IN | gobject.IO_HUP,
1450
1825
functools.partial(self.handle_ipc,
1451
parent_pipe = parent_pipe))
1452
1826
parent_pipe =
1827
parent_pipe,
1828
proc = proc))
1829
1453
1830
def handle_ipc(self, source, condition, parent_pipe=None,
1454
client_object=None):
1831
proc = None, client_object=None):
1455
1832
condition_names = {
1456
gobject.IO_IN: u"IN", # There is data to read.
1457
gobject.IO_OUT: u"OUT", # Data can be written (without
1833
gobject.IO_IN: "IN", # There is data to read.
1834
gobject.IO_OUT: "OUT", # Data can be written (without
1458
1835
# blocking).
1459
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1460
gobject.IO_ERR: u"ERR", # Error condition.
1461
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1836
gobject.IO_PRI: "PRI", # There is urgent data to read.
1837
gobject.IO_ERR: "ERR", # Error condition.
1838
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1462
1839
# broken, usually for pipes and
1463
1840
# sockets).
1464
1841
}
1466
1843
for cond, name in
1467
1844
condition_names.iteritems()
1468
1845
if cond & condition)
1469
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1470
conditions_string)
1471
1472
# error or the other end of multiprocessing.Pipe has closed
1846
# error, or the other end of multiprocessing.Pipe has closed
1473
1847
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1848
# Wait for other process to exit
1849
proc.join()
1474
1850
return False
1475
1851
1476
1852
# Read a request from the child
1477
1853
request = parent_pipe.recv()
1478
logger.debug(u"IPC request: %s", repr(request))
1479
1854
command = request[0]
1480
1855
1481
1856
if command == 'init':
1482
1857
fpr = request[1]
1483
1858
address = request[2]
1484
1859
1485
for c in self.clients:
1860
for c in self.clients.itervalues():
1486
1861
if c.fingerprint == fpr:
1487
1862
client = c
1488
1863
break
1489
1864
else:
1490
logger.warning(u"Client not found for fingerprint: %s, ad"
1491
u"dress: %s", fpr, address)
1865
logger.info("Client not found for fingerprint: %s, ad"
1866
"dress: %s", fpr, address)
1492
1867
if self.use_dbus:
1493
1868
# Emit D-Bus signal
1494
mandos_dbus_service.ClientNotFound(fpr, address)
1869
mandos_dbus_service.ClientNotFound(fpr,
1870
address[0])
1495
1871
parent_pipe.send(False)
1496
1872
return False
1497
1873
1498
1874
gobject.io_add_watch(parent_pipe.fileno(),
1499
1875
gobject.IO_IN | gobject.IO_HUP,
1500
1876
functools.partial(self.handle_ipc,
1501
parent_pipe = parent_pipe,
1502
client_object = client))
1877
parent_pipe =
1878
parent_pipe,
1879
proc = proc,
1880
client_object =
1881
client))
1503
1882
parent_pipe.send(True)
1504
# remove the old hook in favor of the new above hook on same fileno
1883
# remove the old hook in favor of the new above hook on
1884
# same fileno
1505
1885
return False
1506
1886
if command == 'funcall':
1507
1887
funcname = request[1]
1508
1888
args = request[2]
1509
1889
kwargs = request[3]
1510
1890
1511
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1512
1891
parent_pipe.send(('data', getattr(client_object,
1892
funcname)(*args,
1893
**kwargs)))
1894
1513
1895
if command == 'getattr':
1514
1896
attrname = request[1]
1515
1897
if callable(client_object.__getattribute__(attrname)):
1516
1898
parent_pipe.send(('function',))
1517
1899
else:
1518
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1900
parent_pipe.send(('data', client_object
1901
.__getattribute__(attrname)))
1519
1902
1520
1903
if command == 'setattr':
1521
1904
attrname = request[1]
1522
1905
value = request[2]
1523
1906
setattr(client_object, attrname, value)
1524
1907
1525
1908
return True
1526
1909
1527
1910
1528
1911
def string_to_delta(interval):
1529
1912
"""Parse a string and return a datetime.timedelta
1530
1913
1531
>>> string_to_delta(u'7d')
1914
>>> string_to_delta('7d')
1532
1915
datetime.timedelta(7)
1533
>>> string_to_delta(u'60s')
1916
>>> string_to_delta('60s')
1534
1917
datetime.timedelta(0, 60)
1535
>>> string_to_delta(u'60m')
1918
>>> string_to_delta('60m')
1536
1919
datetime.timedelta(0, 3600)
1537
>>> string_to_delta(u'24h')
1920
>>> string_to_delta('24h')
1538
1921
datetime.timedelta(1)
1539
>>> string_to_delta(u'1w')
1922
>>> string_to_delta('1w')
1540
1923
datetime.timedelta(7)
1541
>>> string_to_delta(u'5m 30s')
1924
>>> string_to_delta('5m 30s')
1542
1925
datetime.timedelta(0, 330)
1543
1926
"""
1544
1927
timevalue = datetime.timedelta(0)
1546
1929
try:
1547
1930
suffix = unicode(s[-1])
1548
1931
value = int(s[:-1])
1549
if suffix == u"d":
1932
if suffix == "d":
1550
1933
delta = datetime.timedelta(value)
1551
elif suffix == u"s":
1934
elif suffix == "s":
1552
1935
delta = datetime.timedelta(0, value)
1553
elif suffix == u"m":
1936
elif suffix == "m":
1554
1937
delta = datetime.timedelta(0, 0, 0, 0, value)
1555
elif suffix == u"h":
1938
elif suffix == "h":
1556
1939
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1557
elif suffix == u"w":
1940
elif suffix == "w":
1558
1941
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1559
1942
else:
1560
raise ValueError(u"Unknown suffix %r" % suffix)
1561
except (ValueError, IndexError), e:
1562
raise ValueError(e.message)
1943
raise ValueError("Unknown suffix %r" % suffix)
1944
except (ValueError, IndexError) as e:
1945
raise ValueError(*(e.args))
1563
1946
timevalue += delta
1564
1947
return timevalue
1565
1948
1566
1949
1567
def if_nametoindex(interface):
1568
"""Call the C function if_nametoindex(), or equivalent
1569
1570
Note: This function cannot accept a unicode string."""
1571
global if_nametoindex
1572
try:
1573
if_nametoindex = (ctypes.cdll.LoadLibrary
1574
(ctypes.util.find_library(u"c"))
1575
.if_nametoindex)
1576
except (OSError, AttributeError):
1577
logger.warning(u"Doing if_nametoindex the hard way")
1578
def if_nametoindex(interface):
1579
"Get an interface index the hard way, i.e. using fcntl()"
1580
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1581
with contextlib.closing(socket.socket()) as s:
1582
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1583
struct.pack(str(u"16s16x"),
1584
interface))
1585
interface_index = struct.unpack(str(u"I"),
1586
ifreq[16:20])[0]
1587
return interface_index
1588
return if_nametoindex(interface)
1589
1590
1591
1950
def daemon(nochdir = False, noclose = False):
1592
1951
"""See daemon(3). Standard BSD Unix function.
1593
1952
1596
1955
sys.exit()
1597
1956
os.setsid()
1598
1957
if not nochdir:
1599
os.chdir(u"/")
1958
os.chdir("/")
1600
1959
if os.fork():
1601
1960
sys.exit()
1602
1961
if not noclose:
1604
1963
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1605
1964
if not stat.S_ISCHR(os.fstat(null).st_mode):
1606
1965
raise OSError(errno.ENODEV,
1607
u"%s not a character device"
1966
"%s not a character device"
1608
1967
% os.path.devnull)
1609
1968
os.dup2(null, sys.stdin.fileno())
1610
1969
os.dup2(null, sys.stdout.fileno())
1618
1977
##################################################################
1619
1978
# Parsing of options, both command line and config file
1620
1979
1621
parser = optparse.OptionParser(version = "%%prog %s" % version)
1622
parser.add_option("-i", u"--interface", type=u"string",
1623
metavar="IF", help=u"Bind to interface IF")
1624
parser.add_option("-a", u"--address", type=u"string",
1625
help=u"Address to listen for requests on")
1626
parser.add_option("-p", u"--port", type=u"int",
1627
help=u"Port number to receive requests on")
1628
parser.add_option("--check", action=u"store_true",
1629
help=u"Run self-test")
1630
parser.add_option("--debug", action=u"store_true",
1631
help=u"Debug mode; run in foreground and log to"
1632
u" terminal")
1633
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1634
help=u"Debug level for stdout output")
1635
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1636
u" priority string (see GnuTLS documentation)")
1637
parser.add_option("--servicename", type=u"string",
1638
metavar=u"NAME", help=u"Zeroconf service name")
1639
parser.add_option("--configdir", type=u"string",
1640
default=u"/etc/mandos", metavar=u"DIR",
1641
help=u"Directory to search for configuration"
1642
u" files")
1643
parser.add_option("--no-dbus", action=u"store_false",
1644
dest=u"use_dbus", help=u"Do not provide D-Bus"
1645
u" system bus interface")
1646
parser.add_option("--no-ipv6", action=u"store_false",
1647
dest=u"use_ipv6", help=u"Do not use IPv6")
1648
options = parser.parse_args()[0]
1980
parser = argparse.ArgumentParser()
1981
parser.add_argument("-v", "--version", action="version",
1982
version = "%%(prog)s %s" % version,
1983
help="show version number and exit")
1984
parser.add_argument("-i", "--interface", metavar="IF",
1985
help="Bind to interface IF")
1986
parser.add_argument("-a", "--address",
1987
help="Address to listen for requests on")
1988
parser.add_argument("-p", "--port", type=int,
1989
help="Port number to receive requests on")
1990
parser.add_argument("--check", action="store_true",
1991
help="Run self-test")
1992
parser.add_argument("--debug", action="store_true",
1993
help="Debug mode; run in foreground and log"
1994
" to terminal")
1995
parser.add_argument("--debuglevel", metavar="LEVEL",
1996
help="Debug level for stdout output")
1997
parser.add_argument("--priority", help="GnuTLS"
1998
" priority string (see GnuTLS documentation)")
1999
parser.add_argument("--servicename",
2000
metavar="NAME", help="Zeroconf service name")
2001
parser.add_argument("--configdir",
2002
default="/etc/mandos", metavar="DIR",
2003
help="Directory to search for configuration"
2004
" files")
2005
parser.add_argument("--no-dbus", action="store_false",
2006
dest="use_dbus", help="Do not provide D-Bus"
2007
" system bus interface")
2008
parser.add_argument("--no-ipv6", action="store_false",
2009
dest="use_ipv6", help="Do not use IPv6")
2010
parser.add_argument("--no-restore", action="store_false",
2011
dest="restore", help="Do not restore stored"
2012
" state")
2013
parser.add_argument("--statedir", metavar="DIR",
2014
help="Directory to save/restore state in")
2015
2016
options = parser.parse_args()
1649
2017
1650
2018
if options.check:
1651
2019
import doctest
1653
2021
sys.exit()
1654
2022
1655
2023
# Default values for config file for server-global settings
1656
server_defaults = { u"interface": u"",
1657
u"address": u"",
1658
u"port": u"",
1659
u"debug": u"False",
1660
u"priority":
1661
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1662
u"servicename": u"Mandos",
1663
u"use_dbus": u"True",
1664
u"use_ipv6": u"True",
1665
u"debuglevel": u"",
2024
server_defaults = { "interface": "",
2025
"address": "",
2026
"port": "",
2027
"debug": "False",
2028
"priority":
2029
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2030
"servicename": "Mandos",
2031
"use_dbus": "True",
2032
"use_ipv6": "True",
2033
"debuglevel": "",
2034
"restore": "True",
2035
"statedir": "/var/lib/mandos"
1666
2036
}
1667
2037
1668
2038
# Parse config file for server-global settings
1669
2039
server_config = configparser.SafeConfigParser(server_defaults)
1670
2040
del server_defaults
1671
2041
server_config.read(os.path.join(options.configdir,
1672
u"mandos.conf"))
2042
"mandos.conf"))
1673
2043
# Convert the SafeConfigParser object to a dict
1674
2044
server_settings = server_config.defaults()
1675
2045
# Use the appropriate methods on the non-string config options
1676
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1677
server_settings[option] = server_config.getboolean(u"DEFAULT",
2046
for option in ("debug", "use_dbus", "use_ipv6"):
2047
server_settings[option] = server_config.getboolean("DEFAULT",
1678
2048
option)
1679
2049
if server_settings["port"]:
1680
server_settings["port"] = server_config.getint(u"DEFAULT",
1681
u"port")
2050
server_settings["port"] = server_config.getint("DEFAULT",
2051
"port")
1682
2052
del server_config
1683
2053
1684
2054
# Override the settings from the config file with command line
1685
2055
# options, if set.
1686
for option in (u"interface", u"address", u"port", u"debug",
1687
u"priority", u"servicename", u"configdir",
1688
u"use_dbus", u"use_ipv6", u"debuglevel"):
2056
for option in ("interface", "address", "port", "debug",
2057
"priority", "servicename", "configdir",
2058
"use_dbus", "use_ipv6", "debuglevel", "restore",
2059
"statedir"):
1689
2060
value = getattr(options, option)
1690
2061
if value is not None:
1691
2062
server_settings[option] = value
1699
2070
##################################################################
1700
2071
1701
2072
# For convenience
1702
debug = server_settings[u"debug"]
1703
debuglevel = server_settings[u"debuglevel"]
1704
use_dbus = server_settings[u"use_dbus"]
1705
use_ipv6 = server_settings[u"use_ipv6"]
1706
1707
if server_settings[u"servicename"] != u"Mandos":
2073
debug = server_settings["debug"]
2074
debuglevel = server_settings["debuglevel"]
2075
use_dbus = server_settings["use_dbus"]
2076
use_ipv6 = server_settings["use_ipv6"]
2077
stored_state_path = os.path.join(server_settings["statedir"],
2078
stored_state_file)
2079
2080
if debug:
2081
initlogger(logging.DEBUG)
2082
else:
2083
if not debuglevel:
2084
initlogger()
2085
else:
2086
level = getattr(logging, debuglevel.upper())
2087
initlogger(level)
2088
2089
if server_settings["servicename"] != "Mandos":
1708
2090
syslogger.setFormatter(logging.Formatter
1709
(u'Mandos (%s) [%%(process)d]:'
1710
u' %%(levelname)s: %%(message)s'
1711
% server_settings[u"servicename"]))
2091
('Mandos (%s) [%%(process)d]:'
2092
' %%(levelname)s: %%(message)s'
2093
% server_settings["servicename"]))
1712
2094
1713
2095
# Parse config file with clients
1714
client_defaults = { u"timeout": u"1h",
1715
u"interval": u"5m",
1716
u"checker": u"fping -q -- %%(host)s",
1717
u"host": u"",
1718
u"approved_delay": u"0s",
1719
u"approved_duration": u"1s",
1720
}
1721
client_config = configparser.SafeConfigParser(client_defaults)
1722
client_config.read(os.path.join(server_settings[u"configdir"],
1723
u"clients.conf"))
2096
client_config = configparser.SafeConfigParser(Client.client_defaults)
2097
client_config.read(os.path.join(server_settings["configdir"],
2098
"clients.conf"))
1724
2099
1725
2100
global mandos_dbus_service
1726
2101
mandos_dbus_service = None
1727
2102
1728
tcp_server = MandosServer((server_settings[u"address"],
1729
server_settings[u"port"]),
2103
tcp_server = MandosServer((server_settings["address"],
2104
server_settings["port"]),
1730
2105
ClientHandler,
1731
interface=server_settings[u"interface"],
2106
interface=(server_settings["interface"]
2107
or None),
1732
2108
use_ipv6=use_ipv6,
1733
2109
gnutls_priority=
1734
server_settings[u"priority"],
2110
server_settings["priority"],
1735
2111
use_dbus=use_dbus)
1736
pidfilename = u"/var/run/mandos.pid"
1737
try:
1738
pidfile = open(pidfilename, u"w")
1739
except IOError:
1740
logger.error(u"Could not open file %r", pidfilename)
2112
if not debug:
2113
pidfilename = "/var/run/mandos.pid"
2114
try:
2115
pidfile = open(pidfilename, "w")
2116
except IOError:
2117
logger.error("Could not open file %r", pidfilename)
1741
2118
1742
2119
try:
1743
uid = pwd.getpwnam(u"_mandos").pw_uid
1744
gid = pwd.getpwnam(u"_mandos").pw_gid
2120
uid = pwd.getpwnam("_mandos").pw_uid
2121
gid = pwd.getpwnam("_mandos").pw_gid
1745
2122
except KeyError:
1746
2123
try:
1747
uid = pwd.getpwnam(u"mandos").pw_uid
1748
gid = pwd.getpwnam(u"mandos").pw_gid
2124
uid = pwd.getpwnam("mandos").pw_uid
2125
gid = pwd.getpwnam("mandos").pw_gid
1749
2126
except KeyError:
1750
2127
try:
1751
uid = pwd.getpwnam(u"nobody").pw_uid
1752
gid = pwd.getpwnam(u"nobody").pw_gid
2128
uid = pwd.getpwnam("nobody").pw_uid
2129
gid = pwd.getpwnam("nobody").pw_gid
1753
2130
except KeyError:
1754
2131
uid = 65534
1755
2132
gid = 65534
1756
2133
try:
1757
2134
os.setgid(gid)
1758
2135
os.setuid(uid)
1759
except OSError, error:
2136
except OSError as error:
1760
2137
if error[0] != errno.EPERM:
1761
2138
raise error
1762
2139
1763
# Enable all possible GnuTLS debugging
1764
1765
1766
if not debug and not debuglevel:
1767
syslogger.setLevel(logging.WARNING)
1768
console.setLevel(logging.WARNING)
1769
if debuglevel:
1770
level = getattr(logging, debuglevel.upper())
1771
syslogger.setLevel(level)
1772
console.setLevel(level)
1773
1774
2140
if debug:
2141
# Enable all possible GnuTLS debugging
2142
1775
2143
# "Use a log level over 10 to enable all debugging options."
1776
2144
# - GnuTLS manual
1777
2145
gnutls.library.functions.gnutls_global_set_log_level(11)
1778
2146
1779
2147
@gnutls.library.types.gnutls_log_func
1780
2148
def debug_gnutls(level, string):
1781
logger.debug(u"GnuTLS: %s", string[:-1])
2149
logger.debug("GnuTLS: %s", string[:-1])
1782
2150
1783
2151
(gnutls.library.functions
1784
2152
.gnutls_global_set_log_function(debug_gnutls))
1785
2153
1786
2154
# Redirect stdin so all checkers get /dev/null
1787
2155
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1788
2156
os.dup2(null, sys.stdin.fileno())
1791
2159
else:
1792
2160
# No console logging
1793
2161
logger.removeHandler(console)
1794
2162
2163
# Need to fork before connecting to D-Bus
2164
if not debug:
2165
# Close all input and output, do double fork, etc.
2166
daemon()
1795
2167
1796
2168
global main_loop
1797
2169
# From the Avahi example code
1801
2173
# End of Avahi example code
1802
2174
if use_dbus:
1803
2175
try:
1804
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2176
bus_name = dbus.service.BusName("se.recompile.Mandos",
1805
2177
bus, do_not_queue=True)
1806
except dbus.exceptions.NameExistsException, e:
1807
logger.error(unicode(e) + u", disabling D-Bus")
2178
old_bus_name = (dbus.service.BusName
2179
("se.bsnet.fukt.Mandos", bus,
2180
do_not_queue=True))
2181
except dbus.exceptions.NameExistsException as e:
2182
logger.error(unicode(e) + ", disabling D-Bus")
1808
2183
use_dbus = False
1809
server_settings[u"use_dbus"] = False
2184
server_settings["use_dbus"] = False
1810
2185
tcp_server.use_dbus = False
1811
2186
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1812
service = AvahiService(name = server_settings[u"servicename"],
1813
servicetype = u"_mandos._tcp",
1814
protocol = protocol, bus = bus)
2187
service = AvahiServiceToSyslog(name =
2188
server_settings["servicename"],
2189
servicetype = "_mandos._tcp",
2190
protocol = protocol, bus = bus)
1815
2191
if server_settings["interface"]:
1816
2192
service.interface = (if_nametoindex
1817
(str(server_settings[u"interface"])))
1818
1819
if not debug:
1820
# Close all input and output, do double fork, etc.
1821
daemon()
1822
2193
(str(server_settings["interface"])))
2194
1823
2195
global multiprocessing_manager
1824
2196
multiprocessing_manager = multiprocessing.Manager()
1825
2197
1826
2198
client_class = Client
1827
2199
if use_dbus:
1828
client_class = functools.partial(ClientDBus, bus = bus)
1829
def client_config_items(config, section):
1830
special_settings = {
1831
"approved_by_default":
1832
lambda: config.getboolean(section,
1833
"approved_by_default"),
1834
}
1835
for name, value in config.items(section):
2200
client_class = functools.partial(ClientDBusTransitional,
2201
bus = bus)
2202
2203
client_settings = Client.config_parser(client_config)
2204
old_client_settings = {}
2205
clients_data = {}
2206
2207
# Get client data and settings from last running state.
2208
if server_settings["restore"]:
2209
try:
2210
with open(stored_state_path, "rb") as stored_state:
2211
clients_data, old_client_settings = (pickle.load
2212
(stored_state))
2213
os.remove(stored_state_path)
2214
except IOError as e:
2215
logger.warning("Could not load persistent state: {0}"
2216
.format(e))
2217
if e.errno != errno.ENOENT:
2218
raise
2219
2220
with PGPEngine() as pgp:
2221
for client_name, client in clients_data.iteritems():
2222
# Decide which value to use after restoring saved state.
2223
# We have three different values: Old config file,
2224
# new config file, and saved state.
2225
# New config value takes precedence if it differs from old
2226
# config value, otherwise use saved state.
2227
for name, value in client_settings[client_name].items():
2228
try:
2229
# For each value in new config, check if it
2230
# differs from the old config value (Except for
2231
# the "secret" attribute)
2232
if (name != "secret" and
2233
value != old_client_settings[client_name]
2234
[name]):
2235
client[name] = value
2236
except KeyError:
2237
pass
2238
2239
# Clients who has passed its expire date can still be
2240
# enabled if its last checker was successful. Clients
2241
# whose checker failed before we stored its state is
2242
# assumed to have failed all checkers during downtime.
2243
if client["enabled"]:
2244
if datetime.datetime.utcnow() >= client["expires"]:
2245
if not client["last_checked_ok"]:
2246
logger.warning(
2247
"disabling client {0} - Client never "
2248
"performed a successfull checker"
2249
.format(client["name"]))
2250
client["enabled"] = False
2251
elif client["last_checker_status"] != 0:
2252
logger.warning(
2253
"disabling client {0} - Client "
2254
"last checker failed with error code {1}"
2255
.format(client["name"],
2256
client["last_checker_status"]))
2257
client["enabled"] = False
2258
else:
2259
client["expires"] = (datetime.datetime
2260
.utcnow()
2261
+ client["timeout"])
2262
1836
2263
try:
1837
yield (name, special_settings[name]())
1838
except KeyError:
1839
yield (name, value)
1840
1841
tcp_server.clients.update(set(
1842
client_class(name = section,
1843
config= dict(client_config_items(
1844
client_config, section)))
1845
for section in client_config.sections()))
2264
client["secret"] = (
2265
pgp.decrypt(client["encrypted_secret"],
2266
client_settings[client_name]
2267
["secret"]))
2268
except PGPError:
2269
# If decryption fails, we use secret from new settings
2270
logger.debug("Failed to decrypt {0} old secret"
2271
.format(client_name))
2272
client["secret"] = (
2273
client_settings[client_name]["secret"])
2274
2275
2276
# Add/remove clients based on new changes made to config
2277
for client_name in set(old_client_settings) - set(client_settings):
2278
del clients_data[client_name]
2279
for client_name in set(client_settings) - set(old_client_settings):
2280
clients_data[client_name] = client_settings[client_name]
2281
2282
# Create clients all clients
2283
for client_name, client in clients_data.iteritems():
2284
tcp_server.clients[client_name] = client_class(
2285
name = client_name, settings = client)
2286
1846
2287
if not tcp_server.clients:
1847
logger.warning(u"No clients defined")
2288
logger.warning("No clients defined")
1848
2289
1849
try:
1850
with pidfile:
1851
pid = os.getpid()
1852
pidfile.write(str(pid) + "\n")
1853
del pidfile
1854
except IOError:
1855
logger.error(u"Could not write to file %r with PID %d",
1856
pidfilename, pid)
1857
except NameError:
1858
# "pidfile" was never created
1859
pass
1860
del pidfilename
1861
1862
2290
if not debug:
2291
try:
2292
with pidfile:
2293
pid = os.getpid()
2294
pidfile.write(str(pid) + "\n".encode("utf-8"))
2295
del pidfile
2296
except IOError:
2297
logger.error("Could not write to file %r with PID %d",
2298
pidfilename, pid)
2299
except NameError:
2300
# "pidfile" was never created
2301
pass
2302
del pidfilename
1863
2303
signal.signal(signal.SIGINT, signal.SIG_IGN)
2304
1864
2305
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1865
2306
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1866
2307
1868
2309
class MandosDBusService(dbus.service.Object):
1869
2310
"""A D-Bus proxy object"""
1870
2311
def __init__(self):
1871
dbus.service.Object.__init__(self, bus, u"/")
1872
_interface = u"se.bsnet.fukt.Mandos"
2312
dbus.service.Object.__init__(self, bus, "/")
2313
_interface = "se.recompile.Mandos"
1873
2314
1874
@dbus.service.signal(_interface, signature=u"o")
2315
@dbus.service.signal(_interface, signature="o")
1875
2316
def ClientAdded(self, objpath):
1876
2317
"D-Bus signal"
1877
2318
pass
1878
2319
1879
@dbus.service.signal(_interface, signature=u"ss")
2320
@dbus.service.signal(_interface, signature="ss")
1880
2321
def ClientNotFound(self, fingerprint, address):
1881
2322
"D-Bus signal"
1882
2323
pass
1883
2324
1884
@dbus.service.signal(_interface, signature=u"os")
2325
@dbus.service.signal(_interface, signature="os")
1885
2326
def ClientRemoved(self, objpath, name):
1886
2327
"D-Bus signal"
1887
2328
pass
1888
2329
1889
@dbus.service.method(_interface, out_signature=u"ao")
2330
@dbus.service.method(_interface, out_signature="ao")
1890
2331
def GetAllClients(self):
1891
2332
"D-Bus method"
1892
2333
return dbus.Array(c.dbus_object_path
1893
for c in tcp_server.clients)
2334
for c in
2335
tcp_server.clients.itervalues())
1894
2336
1895
2337
@dbus.service.method(_interface,
1896
out_signature=u"a{oa{sv}}")
2338
out_signature="a{oa{sv}}")
1897
2339
def GetAllClientsWithProperties(self):
1898
2340
"D-Bus method"
1899
2341
return dbus.Dictionary(
1900
((c.dbus_object_path, c.GetAll(u""))
1901
for c in tcp_server.clients),
1902
signature=u"oa{sv}")
2342
((c.dbus_object_path, c.GetAll(""))
2343
for c in tcp_server.clients.itervalues()),
2344
signature="oa{sv}")
1903
2345
1904
@dbus.service.method(_interface, in_signature=u"o")
2346
@dbus.service.method(_interface, in_signature="o")
1905
2347
def RemoveClient(self, object_path):
1906
2348
"D-Bus method"
1907
for c in tcp_server.clients:
2349
for c in tcp_server.clients.itervalues():
1908
2350
if c.dbus_object_path == object_path:
1909
tcp_server.clients.remove(c)
2351
del tcp_server.clients[c.name]
1910
2352
c.remove_from_connection()
1911
2353
# Don't signal anything except ClientRemoved
1912
2354
c.disable(quiet=True)
1917
2359
1918
2360
del _interface
1919
2361
1920
mandos_dbus_service = MandosDBusService()
2362
class MandosDBusServiceTransitional(MandosDBusService):
2363
__metaclass__ = AlternateDBusNamesMetaclass
2364
mandos_dbus_service = MandosDBusServiceTransitional()
1921
2365
1922
2366
def cleanup():
1923
2367
"Cleanup function; run on exit"
1924
2368
service.cleanup()
1925
2369
2370
multiprocessing.active_children()
2371
if not (tcp_server.clients or client_settings):
2372
return
2373
2374
# Store client before exiting. Secrets are encrypted with key
2375
# based on what config file has. If config file is
2376
# removed/edited, old secret will thus be unrecovable.
2377
clients = {}
2378
with PGPEngine() as pgp:
2379
for client in tcp_server.clients.itervalues():
2380
key = client_settings[client.name]["secret"]
2381
client.encrypted_secret = pgp.encrypt(client.secret,
2382
key)
2383
client_dict = {}
2384
2385
# A list of attributes that can not be pickled
2386
# + secret.
2387
exclude = set(("bus", "changedstate", "secret",
2388
"checker"))
2389
for name, typ in (inspect.getmembers
2390
(dbus.service.Object)):
2391
exclude.add(name)
2392
2393
client_dict["encrypted_secret"] = (client
2394
.encrypted_secret)
2395
for attr in client.client_structure:
2396
if attr not in exclude:
2397
client_dict[attr] = getattr(client, attr)
2398
2399
clients[client.name] = client_dict
2400
del client_settings[client.name]["secret"]
2401
2402
try:
2403
with os.fdopen(os.open(stored_state_path,
2404
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2405
0600), "wb") as stored_state:
2406
pickle.dump((clients, client_settings), stored_state)
2407
except (IOError, OSError) as e:
2408
logger.warning("Could not save persistent state: {0}"
2409
.format(e))
2410
if e.errno not in (errno.ENOENT, errno.EACCES):
2411
raise
2412
2413
# Delete all clients, and settings from config
1926
2414
while tcp_server.clients:
1927
client = tcp_server.clients.pop()
2415
name, client = tcp_server.clients.popitem()
1928
2416
if use_dbus:
1929
2417
client.remove_from_connection()
1930
client.disable_hook = None
1931
2418
# Don't signal anything except ClientRemoved
1932
2419
client.disable(quiet=True)
1933
2420
if use_dbus:
1934
2421
# Emit D-Bus signal
1935
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2422
mandos_dbus_service.ClientRemoved(client
2423
.dbus_object_path,
1936
2424
client.name)
2425
client_settings.clear()
1937
2426
1938
2427
atexit.register(cleanup)
1939
2428
1940
for client in tcp_server.clients:
2429
for client in tcp_server.clients.itervalues():
1941
2430
if use_dbus:
1942
2431
# Emit D-Bus signal
1943
2432
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1944
client.enable()
2433
# Need to initiate checking of clients
2434
if client.enabled:
2435
client.init_checker()
1945
2436
1946
2437
tcp_server.enable()
1947
2438
tcp_server.server_activate()
1949
2440
# Find out what port we got
1950
2441
service.port = tcp_server.socket.getsockname()[1]
1951
2442
if use_ipv6:
1952
logger.info(u"Now listening on address %r, port %d,"
2443
logger.info("Now listening on address %r, port %d,"
1953
2444
" flowinfo %d, scope_id %d"
1954
2445
% tcp_server.socket.getsockname())
1955
2446
else: # IPv4
1956
logger.info(u"Now listening on address %r, port %d"
2447
logger.info("Now listening on address %r, port %d"
1957
2448
% tcp_server.socket.getsockname())
1958
2449
1959
2450
#service.interface = tcp_server.socket.getsockname()[3]
1962
2453
# From the Avahi example code
1963
2454
try:
1964
2455
service.activate()
1965
except dbus.exceptions.DBusException, error:
1966
logger.critical(u"DBusException: %s", error)
2456
except dbus.exceptions.DBusException as error:
2457
logger.critical("DBusException: %s", error)
1967
2458
cleanup()
1968
2459
sys.exit(1)
1969
2460
# End of Avahi example code
1973
2464
(tcp_server.handle_request
1974
2465
(*args[2:], **kwargs) or True))
1975
2466
1976
logger.debug(u"Starting main loop")
2467
logger.debug("Starting main loop")
1977
2468
main_loop.run()
1978
except AvahiError, error:
1979
logger.critical(u"AvahiError: %s", error)
2469
except AvahiError as error:
2470
logger.critical("AvahiError: %s", error)
1980
2471
cleanup()
1981
2472
sys.exit(1)
1982
2473
except KeyboardInterrupt:
1983
2474
if debug:
1984
print >> sys.stderr
1985
logger.debug(u"Server received KeyboardInterrupt")
1986
logger.debug(u"Server exiting")
2475
print("", file=sys.stderr)
2476
logger.debug("Server received KeyboardInterrupt")
2477
logger.debug("Server exiting")
1987
2478
# Must run before the D-Bus bus name gets deregistered
1988
2479
cleanup()
1989
2480
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0