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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
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
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
28
# along with this program. If not, see
29
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# <http://www.gnu.org/licenses/>.
30
30
#
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()
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syslogger = (logging.handlers.SysLogHandler
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(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)
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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)
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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 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
if state == avahi.SERVER_COLLISION:
217
logger.error(u"Zeroconf server name collision")
218
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()
219
351
elif state == avahi.SERVER_RUNNING:
220
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)
221
358
def activate(self):
222
359
"""Derived from the Avahi example code"""
223
360
if self.server is None:
224
361
self.server = dbus.Interface(
225
362
self.bus.get_object(avahi.DBUS_NAME,
226
avahi.DBUS_PATH_SERVER),
363
avahi.DBUS_PATH_SERVER,
364
follow_name_owner_changes=True),
227
365
avahi.DBUS_INTERFACE_SERVER)
228
self.server.connect_to_signal(u"StateChanged",
366
self.server.connect_to_signal("StateChanged",
229
367
self.server_state_changed)
230
368
self.server_state_changed(self.server.GetState())
231
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
232
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
233
386
class Client(object):
234
387
"""A representation of a client host served by this server.
235
388
236
389
Attributes:
237
name: string; from the config file, used in log messages and
238
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()
239
408
fingerprint: string (40 or 32 hexadecimal digits); used to
240
409
uniquely identify the client
241
secret: bytestring; sent verbatim (over TLS) to client
242
410
host: string; available for use by the checker command
243
created: datetime.datetime(); (UTC) object creation
244
last_enabled: datetime.datetime(); (UTC)
245
enabled: bool()
411
interval: datetime.timedelta(); How often to start a new checker
412
last_approval_request: datetime.datetime(); (UTC) or None
246
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
247
421
timeout: datetime.timedelta(); How long from last_checked_ok
248
422
until this client is disabled
249
interval: datetime.timedelta(); How often to start a new checker
250
disable_hook: If set, called by disable() as disable_hook(self)
251
checker: subprocess.Popen(); a running checker process used
252
to see if the client lives.
253
'None' if no process is running.
254
checker_initiator_tag: a gobject event source tag, or None
255
disable_initiator_tag: - '' -
256
checker_callback_tag: - '' -
257
checker_command: string; External command which is run to check if
258
client lives. %() expansions are done at
259
runtime with vars(self) as dict, so that for
260
instance %(name)s can be used in the command.
261
current_checker_command: string; current running checker_command
262
approved_delay: datetime.timedelta(); Time to wait for approval
263
_approved: bool(); 'None' if not yet approved/disapproved
264
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
265
427
"""
266
428
267
@staticmethod
268
def _timedelta_to_milliseconds(td):
269
"Convert a datetime.timedelta() to milliseconds"
270
return ((td.days * 24 * 60 * 60 * 1000)
271
+ (td.seconds * 1000)
272
+ (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
}
273
443
274
444
def timeout_milliseconds(self):
275
445
"Return the 'timeout' attribute in milliseconds"
276
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)
277
451
278
452
def interval_milliseconds(self):
279
453
"Return the 'interval' attribute in milliseconds"
280
return self._timedelta_to_milliseconds(self.interval)
281
282
def approved_delay_milliseconds(self):
283
return self._timedelta_to_milliseconds(self.approved_delay)
454
return timedelta_to_milliseconds(self.interval)
284
455
285
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):
286
511
"""Note: the 'checker' key in 'config' sets the
287
512
'checker_command' attribute and *not* the 'checker'
288
513
attribute."""
289
514
self.name = name
290
if config is None:
291
config = {}
292
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)
293
520
# Uppercase and remove spaces from fingerprint for later
294
521
# comparison purposes with return value from the fingerprint()
295
522
# function
296
self.fingerprint = (config[u"fingerprint"].upper()
297
.replace(u" ", u""))
298
logger.debug(u" Fingerprint: %s", self.fingerprint)
299
if u"secret" in config:
300
self.secret = config[u"secret"].decode(u"base64")
301
elif u"secfile" in config:
302
with open(os.path.expanduser(os.path.expandvars
303
(config[u"secfile"])),
304
"rb") as secfile:
305
self.secret = secfile.read()
306
else:
307
raise TypeError(u"No secret or secfile for client %s"
308
% self.name)
309
self.host = config.get(u"host", u"")
310
self.created = datetime.datetime.utcnow()
311
self.enabled = False
312
self.last_enabled = None
313
self.last_checked_ok = None
314
self.timeout = string_to_delta(config[u"timeout"])
315
self.interval = string_to_delta(config[u"interval"])
316
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
317
527
self.checker = None
318
528
self.checker_initiator_tag = None
319
529
self.disable_initiator_tag = None
320
530
self.checker_callback_tag = None
321
self.checker_command = config[u"checker"]
322
531
self.current_checker_command = None
323
self.last_connect = None
324
self._approved = None
325
self.approved_by_default = config.get(u"approved_by_default",
326
True)
532
self.approved = None
327
533
self.approvals_pending = 0
328
self.approved_delay = string_to_delta(
329
config[u"approved_delay"])
330
self.approved_duration = string_to_delta(
331
config[u"approved_duration"])
332
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)
333
548
549
# Send notice to process children that client state has changed
334
550
def send_changedstate(self):
335
self.changedstate.acquire()
336
self.changedstate.notify_all()
337
self.changedstate.release()
338
551
with self.changedstate:
552
self.changedstate.notify_all()
553
339
554
def enable(self):
340
555
"""Start this client's checker and timeout hooks"""
341
if getattr(self, u"enabled", False):
556
if getattr(self, "enabled", False):
342
557
# Already enabled
343
558
return
344
559
self.send_changedstate()
560
self.expires = datetime.datetime.utcnow() + self.timeout
561
self.enabled = True
345
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):
346
589
# Schedule a new checker to be started an 'interval' from now,
347
590
# and every interval from then on.
348
591
self.checker_initiator_tag = (gobject.timeout_add
352
595
self.disable_initiator_tag = (gobject.timeout_add
353
596
(self.timeout_milliseconds(),
354
597
self.disable))
355
self.enabled = True
356
598
# Also start a new checker *right now*.
357
599
self.start_checker()
358
600
359
def disable(self, quiet=True):
360
"""Disable this client."""
361
if not getattr(self, "enabled", False):
362
return False
363
if not quiet:
364
self.send_changedstate()
365
if not quiet:
366
logger.info(u"Disabling client %s", self.name)
367
if getattr(self, u"disable_initiator_tag", False):
368
gobject.source_remove(self.disable_initiator_tag)
369
self.disable_initiator_tag = None
370
if getattr(self, u"checker_initiator_tag", False):
371
gobject.source_remove(self.checker_initiator_tag)
372
self.checker_initiator_tag = None
373
self.stop_checker()
374
if self.disable_hook:
375
self.disable_hook(self)
376
self.enabled = False
377
# Do not run this again if called by a gobject.timeout_add
378
return False
379
380
def __del__(self):
381
self.disable_hook = None
382
self.disable()
383
384
601
def checker_callback(self, pid, condition, command):
385
602
"""The checker has completed, so take appropriate actions."""
386
603
self.checker_callback_tag = None
387
604
self.checker = None
388
605
if os.WIFEXITED(condition):
389
exitstatus = os.WEXITSTATUS(condition)
390
if exitstatus == 0:
391
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",
392
609
vars(self))
393
610
self.checked_ok()
394
611
else:
395
logger.info(u"Checker for %(name)s failed",
612
logger.info("Checker for %(name)s failed",
396
613
vars(self))
397
614
else:
398
logger.warning(u"Checker for %(name)s crashed?",
615
self.last_checker_status = -1
616
logger.warning("Checker for %(name)s crashed?",
399
617
vars(self))
400
618
401
def checked_ok(self):
619
def checked_ok(self, timeout=None):
402
620
"""Bump up the timeout for this client.
403
621
404
622
This should only be called when the client has been seen,
405
623
alive and well.
406
624
"""
625
if timeout is None:
626
timeout = self.timeout
407
627
self.last_checked_ok = datetime.datetime.utcnow()
408
gobject.source_remove(self.disable_initiator_tag)
409
self.disable_initiator_tag = (gobject.timeout_add
410
(self.timeout_milliseconds(),
411
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()
412
638
413
639
def start_checker(self):
414
640
"""Start a new checker subprocess if one is not running.
427
653
# If a checker exists, make sure it is not a zombie
428
654
try:
429
655
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
430
except (AttributeError, OSError), error:
656
except (AttributeError, OSError) as error:
431
657
if (isinstance(error, OSError)
432
658
and error.errno != errno.ECHILD):
433
659
raise error
434
660
else:
435
661
if pid:
436
logger.warning(u"Checker was a zombie")
662
logger.warning("Checker was a zombie")
437
663
gobject.source_remove(self.checker_callback_tag)
438
664
self.checker_callback(pid, status,
439
665
self.current_checker_command)
444
670
command = self.checker_command % self.host
445
671
except TypeError:
446
672
# Escape attributes for the shell
447
escaped_attrs = dict((key,
448
re.escape(unicode(str(val),
449
errors=
450
u'replace')))
451
for key, val in
452
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
453
681
try:
454
682
command = self.checker_command % escaped_attrs
455
except TypeError, error:
456
logger.error(u'Could not format string "%s":'
457
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)
458
686
return True # Try again later
459
687
self.current_checker_command = command
460
688
try:
461
logger.info(u"Starting checker %r for %s",
689
logger.info("Starting checker %r for %s",
462
690
command, self.name)
463
691
# We don't need to redirect stdout and stderr, since
464
692
# in normal mode, that is already done by daemon(),
466
694
# always replaced by /dev/null.)
467
695
self.checker = subprocess.Popen(command,
468
696
close_fds=True,
469
shell=True, cwd=u"/")
697
shell=True, cwd="/")
470
698
self.checker_callback_tag = (gobject.child_watch_add
471
699
(self.checker.pid,
472
700
self.checker_callback,
477
705
if pid:
478
706
gobject.source_remove(self.checker_callback_tag)
479
707
self.checker_callback(pid, status, command)
480
except OSError, error:
481
logger.error(u"Failed to start subprocess: %s",
708
except OSError as error:
709
logger.error("Failed to start subprocess: %s",
482
710
error)
483
711
# Re-run this periodically if run by gobject.timeout_add
484
712
return True
488
716
if self.checker_callback_tag:
489
717
gobject.source_remove(self.checker_callback_tag)
490
718
self.checker_callback_tag = None
491
if getattr(self, u"checker", None) is None:
719
if getattr(self, "checker", None) is None:
492
720
return
493
logger.debug(u"Stopping checker for %(name)s", vars(self))
721
logger.debug("Stopping checker for %(name)s", vars(self))
494
722
try:
495
723
os.kill(self.checker.pid, signal.SIGTERM)
496
724
#time.sleep(0.5)
497
725
#if self.checker.poll() is None:
498
726
# os.kill(self.checker.pid, signal.SIGKILL)
499
except OSError, error:
727
except OSError as error:
500
728
if error.errno != errno.ESRCH: # No such process
501
729
raise
502
730
self.checker = None
503
731
504
def dbus_service_property(dbus_interface, signature=u"v",
505
access=u"readwrite", byte_arrays=False):
732
733
def dbus_service_property(dbus_interface, signature="v",
734
access="readwrite", byte_arrays=False):
506
735
"""Decorators for marking methods of a DBusObjectWithProperties to
507
736
become properties on the D-Bus.
508
737
515
744
"""
516
745
# Encoding deeply encoded byte arrays is not supported yet by the
517
746
# "Set" method, so we fail early here:
518
if byte_arrays and signature != u"ay":
519
raise ValueError(u"Byte arrays not supported for non-'ay'"
520
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)
521
750
def decorator(func):
522
751
func._dbus_is_property = True
523
752
func._dbus_interface = dbus_interface
524
753
func._dbus_signature = signature
525
754
func._dbus_access = access
526
755
func._dbus_name = func.__name__
527
if func._dbus_name.endswith(u"_dbus_property"):
756
if func._dbus_name.endswith("_dbus_property"):
528
757
func._dbus_name = func._dbus_name[:-14]
529
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
758
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
530
759
return func
531
760
return decorator
532
761
552
781
553
782
class DBusObjectWithProperties(dbus.service.Object):
554
783
"""A D-Bus object with properties.
555
784
556
785
Classes inheriting from this can use the dbus_service_property
557
786
decorator to expose methods as D-Bus properties. It exposes the
558
787
standard Get(), Set(), and GetAll() methods on the D-Bus.
560
789
561
790
@staticmethod
562
791
def _is_dbus_property(obj):
563
return getattr(obj, u"_dbus_is_property", False)
792
return getattr(obj, "_dbus_is_property", False)
564
793
565
794
def _get_all_dbus_properties(self):
566
795
"""Returns a generator of (name, attribute) pairs
567
796
"""
568
return ((prop._dbus_name, prop)
797
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
798
for cls in self.__class__.__mro__
569
799
for name, prop in
570
inspect.getmembers(self, self._is_dbus_property))
800
inspect.getmembers(cls, self._is_dbus_property))
571
801
572
802
def _get_dbus_property(self, interface_name, property_name):
573
803
"""Returns a bound method if one exists which is a D-Bus
574
804
property with the specified name and interface.
575
805
"""
576
for name in (property_name,
577
property_name + u"_dbus_property"):
578
prop = getattr(self, name, None)
579
if (prop is None
580
or not self._is_dbus_property(prop)
581
or prop._dbus_name != property_name
582
or (interface_name and prop._dbus_interface
583
and interface_name != prop._dbus_interface)):
584
continue
585
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
586
813
# No such property
587
raise DBusPropertyNotFound(self.dbus_object_path + u":"
588
+ interface_name + u"."
814
raise DBusPropertyNotFound(self.dbus_object_path + ":"
815
+ interface_name + "."
589
816
+ property_name)
590
817
591
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
592
out_signature=u"v")
818
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
819
out_signature="v")
593
820
def Get(self, interface_name, property_name):
594
821
"""Standard D-Bus property Get() method, see D-Bus standard.
595
822
"""
596
823
prop = self._get_dbus_property(interface_name, property_name)
597
if prop._dbus_access == u"write":
824
if prop._dbus_access == "write":
598
825
raise DBusPropertyAccessException(property_name)
599
826
value = prop()
600
if not hasattr(value, u"variant_level"):
827
if not hasattr(value, "variant_level"):
601
828
return value
602
829
return type(value)(value, variant_level=value.variant_level+1)
603
830
604
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
831
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
605
832
def Set(self, interface_name, property_name, value):
606
833
"""Standard D-Bus property Set() method, see D-Bus standard.
607
834
"""
608
835
prop = self._get_dbus_property(interface_name, property_name)
609
if prop._dbus_access == u"read":
836
if prop._dbus_access == "read":
610
837
raise DBusPropertyAccessException(property_name)
611
if prop._dbus_get_args_options[u"byte_arrays"]:
838
if prop._dbus_get_args_options["byte_arrays"]:
612
839
# The byte_arrays option is not supported yet on
613
840
# signatures other than "ay".
614
if prop._dbus_signature != u"ay":
841
if prop._dbus_signature != "ay":
615
842
raise ValueError
616
843
value = dbus.ByteArray(''.join(unichr(byte)
617
844
for byte in value))
618
845
prop(value)
619
846
620
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
621
out_signature=u"a{sv}")
847
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
848
out_signature="a{sv}")
622
849
def GetAll(self, interface_name):
623
850
"""Standard D-Bus property GetAll() method, see D-Bus
624
851
standard.
625
852
626
853
Note: Will not include properties with access="write".
627
854
"""
628
all = {}
855
properties = {}
629
856
for name, prop in self._get_all_dbus_properties():
630
857
if (interface_name
631
858
and interface_name != prop._dbus_interface):
632
859
# Interface non-empty but did not match
633
860
continue
634
861
# Ignore write-only properties
635
if prop._dbus_access == u"write":
862
if prop._dbus_access == "write":
636
863
continue
637
864
value = prop()
638
if not hasattr(value, u"variant_level"):
639
all[name] = value
865
if not hasattr(value, "variant_level"):
866
properties[name] = value
640
867
continue
641
all[name] = type(value)(value, variant_level=
642
value.variant_level+1)
643
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")
644
871
645
872
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
646
out_signature=u"s",
873
out_signature="s",
647
874
path_keyword='object_path',
648
875
connection_keyword='connection')
649
876
def Introspect(self, object_path, connection):
654
881
try:
655
882
document = xml.dom.minidom.parseString(xmlstring)
656
883
def make_tag(document, name, prop):
657
e = document.createElement(u"property")
658
e.setAttribute(u"name", name)
659
e.setAttribute(u"type", prop._dbus_signature)
660
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)
661
888
return e
662
for if_tag in document.getElementsByTagName(u"interface"):
889
for if_tag in document.getElementsByTagName("interface"):
663
890
for tag in (make_tag(document, name, prop)
664
891
for name, prop
665
892
in self._get_all_dbus_properties()
666
893
if prop._dbus_interface
667
== if_tag.getAttribute(u"name")):
894
== if_tag.getAttribute("name")):
668
895
if_tag.appendChild(tag)
669
896
# Add the names to the return values for the
670
897
# "org.freedesktop.DBus.Properties" methods
671
if (if_tag.getAttribute(u"name")
672
== u"org.freedesktop.DBus.Properties"):
673
for cn in if_tag.getElementsByTagName(u"method"):
674
if cn.getAttribute(u"name") == u"Get":
675
for arg in cn.getElementsByTagName(u"arg"):
676
if (arg.getAttribute(u"direction")
677
== u"out"):
678
arg.setAttribute(u"name", u"value")
679
elif cn.getAttribute(u"name") == u"GetAll":
680
for arg in cn.getElementsByTagName(u"arg"):
681
if (arg.getAttribute(u"direction")
682
== u"out"):
683
arg.setAttribute(u"name", u"props")
684
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")
685
912
document.unlink()
686
913
except (AttributeError, xml.dom.DOMException,
687
xml.parsers.expat.ExpatError), error:
688
logger.error(u"Failed to override Introspection method",
914
xml.parsers.expat.ExpatError) as error:
915
logger.error("Failed to override Introspection method",
689
916
error)
690
917
return xmlstring
691
918
692
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
693
1026
class ClientDBus(Client, DBusObjectWithProperties):
694
1027
"""A Client class using D-Bus
695
1028
697
1030
dbus_object_path: dbus.ObjectPath
698
1031
bus: dbus.SystemBus()
699
1032
"""
1033
1034
runtime_expansions = (Client.runtime_expansions
1035
+ ("dbus_object_path",))
1036
700
1037
# dbus.service.Object doesn't use super(), so we can't either.
701
1038
702
1039
def __init__(self, bus = None, *args, **kwargs):
703
self._approvals_pending = 0
704
1040
self.bus = bus
705
1041
Client.__init__(self, *args, **kwargs)
1042
self._approvals_pending = 0
1043
1044
self._approvals_pending = 0
706
1045
# Only now, when this client is initialized, can it show up on
707
1046
# the D-Bus
1047
client_object_name = unicode(self.name).translate(
1048
{ord("."): ord("_"),
1049
ord("-"): ord("_")})
708
1050
self.dbus_object_path = (dbus.ObjectPath
709
(u"/clients/"
710
+ self.name.replace(u".", u"_")))
1051
("/clients/" + client_object_name))
711
1052
DBusObjectWithProperties.__init__(self, self.bus,
712
1053
self.dbus_object_path)
713
714
def _get_approvals_pending(self):
715
return self._approvals_pending
716
def _set_approvals_pending(self, value):
717
old_value = self._approvals_pending
718
self._approvals_pending = value
719
bval = bool(value)
720
if (hasattr(self, "dbus_object_path")
721
and bval is not bool(old_value)):
722
dbus_bool = dbus.Boolean(bval, variant_level=1)
723
self.PropertyChanged(dbus.String(u"approved_pending"),
724
dbus_bool)
725
726
approvals_pending = property(_get_approvals_pending,
727
_set_approvals_pending)
728
del _get_approvals_pending, _set_approvals_pending
729
730
@staticmethod
731
def _datetime_to_dbus(dt, variant_level=0):
732
"""Convert a UTC datetime.datetime() to a D-Bus type."""
733
return dbus.String(dt.isoformat(),
734
variant_level=variant_level)
735
736
def enable(self):
737
oldstate = getattr(self, u"enabled", False)
738
r = Client.enable(self)
739
if oldstate != self.enabled:
740
# Emit D-Bus signals
741
self.PropertyChanged(dbus.String(u"enabled"),
742
dbus.Boolean(True, variant_level=1))
743
self.PropertyChanged(
744
dbus.String(u"last_enabled"),
745
self._datetime_to_dbus(self.last_enabled,
746
variant_level=1))
747
return r
748
749
def disable(self, quiet = False):
750
oldstate = getattr(self, u"enabled", False)
751
r = Client.disable(self, quiet=quiet)
752
if not quiet and oldstate != self.enabled:
753
# Emit D-Bus signal
754
self.PropertyChanged(dbus.String(u"enabled"),
755
dbus.Boolean(False, variant_level=1))
756
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
757
1121
758
1122
def __del__(self, *args, **kwargs):
759
1123
try:
760
1124
self.remove_from_connection()
761
1125
except LookupError:
762
1126
pass
763
if hasattr(DBusObjectWithProperties, u"__del__"):
1127
if hasattr(DBusObjectWithProperties, "__del__"):
764
1128
DBusObjectWithProperties.__del__(self, *args, **kwargs)
765
1129
Client.__del__(self, *args, **kwargs)
766
1130
768
1132
*args, **kwargs):
769
1133
self.checker_callback_tag = None
770
1134
self.checker = None
771
# Emit D-Bus signal
772
self.PropertyChanged(dbus.String(u"checker_running"),
773
dbus.Boolean(False, variant_level=1))
774
1135
if os.WIFEXITED(condition):
775
1136
exitstatus = os.WEXITSTATUS(condition)
776
1137
# Emit D-Bus signal
786
1147
return Client.checker_callback(self, pid, condition, command,
787
1148
*args, **kwargs)
788
1149
789
def checked_ok(self, *args, **kwargs):
790
r = Client.checked_ok(self, *args, **kwargs)
791
# Emit D-Bus signal
792
self.PropertyChanged(
793
dbus.String(u"last_checked_ok"),
794
(self._datetime_to_dbus(self.last_checked_ok,
795
variant_level=1)))
796
return r
797
798
1150
def start_checker(self, *args, **kwargs):
799
1151
old_checker = self.checker
800
1152
if self.checker is not None:
807
1159
and old_checker_pid != self.checker.pid):
808
1160
# Emit D-Bus signal
809
1161
self.CheckerStarted(self.current_checker_command)
810
self.PropertyChanged(
811
dbus.String(u"checker_running"),
812
dbus.Boolean(True, variant_level=1))
813
1162
return r
814
1163
815
def stop_checker(self, *args, **kwargs):
816
old_checker = getattr(self, u"checker", None)
817
r = Client.stop_checker(self, *args, **kwargs)
818
if (old_checker is not None
819
and getattr(self, u"checker", None) is None):
820
self.PropertyChanged(dbus.String(u"checker_running"),
821
dbus.Boolean(False, variant_level=1))
822
return r
823
824
1164
def _reset_approved(self):
825
self._approved = None
1165
self.approved = None
826
1166
return False
827
1167
828
1168
def approve(self, value=True):
829
1169
self.send_changedstate()
830
self._approved = value
831
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),
832
1173
self._reset_approved)
833
1174
834
1175
835
1176
## D-Bus methods, signals & properties
836
_interface = u"se.bsnet.fukt.Mandos.Client"
1177
_interface = "se.recompile.Mandos.Client"
837
1178
838
1179
## Signals
839
1180
840
1181
# CheckerCompleted - signal
841
@dbus.service.signal(_interface, signature=u"nxs")
1182
@dbus.service.signal(_interface, signature="nxs")
842
1183
def CheckerCompleted(self, exitcode, waitstatus, command):
843
1184
"D-Bus signal"
844
1185
pass
845
1186
846
1187
# CheckerStarted - signal
847
@dbus.service.signal(_interface, signature=u"s")
1188
@dbus.service.signal(_interface, signature="s")
848
1189
def CheckerStarted(self, command):
849
1190
"D-Bus signal"
850
1191
pass
851
1192
852
1193
# PropertyChanged - signal
853
@dbus.service.signal(_interface, signature=u"sv")
1194
@dbus.service.signal(_interface, signature="sv")
854
1195
def PropertyChanged(self, property, value):
855
1196
"D-Bus signal"
856
1197
pass
865
1206
pass
866
1207
867
1208
# Rejected - signal
868
@dbus.service.signal(_interface, signature=u"s")
1209
@dbus.service.signal(_interface, signature="s")
869
1210
def Rejected(self, reason):
870
1211
"D-Bus signal"
871
1212
pass
872
1213
873
1214
# NeedApproval - signal
874
@dbus.service.signal(_interface, signature=u"db")
1215
@dbus.service.signal(_interface, signature="tb")
875
1216
def NeedApproval(self, timeout, default):
876
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
"""
877
1226
pass
878
1227
879
1228
## Methods
880
1229
881
1230
# Approve - method
882
@dbus.service.method(_interface, in_signature=u"b")
1231
@dbus.service.method(_interface, in_signature="b")
883
1232
def Approve(self, value):
884
1233
self.approve(value)
885
1234
886
1235
# CheckedOK - method
887
1236
@dbus.service.method(_interface)
888
1237
def CheckedOK(self):
889
return self.checked_ok()
1238
self.checked_ok()
890
1239
891
1240
# Enable - method
892
1241
@dbus.service.method(_interface)
913
1262
914
1263
## Properties
915
1264
916
# approved_pending - property
917
@dbus_service_property(_interface, signature=u"b", access=u"read")
918
def approved_pending_dbus_property(self):
1265
# ApprovalPending - property
1266
@dbus_service_property(_interface, signature="b", access="read")
1267
def ApprovalPending_dbus_property(self):
919
1268
return dbus.Boolean(bool(self.approvals_pending))
920
1269
921
# approved_by_default - property
922
@dbus_service_property(_interface, signature=u"b",
923
access=u"readwrite")
924
def approved_by_default_dbus_property(self):
925
return dbus.Boolean(self.approved_by_default)
926
927
# approved_delay - property
928
@dbus_service_property(_interface, signature=u"t",
929
access=u"readwrite")
930
def approved_delay_dbus_property(self):
931
return dbus.UInt64(self.approved_delay_milliseconds())
932
933
# approved_duration - property
934
@dbus_service_property(_interface, signature=u"t",
935
access=u"readwrite")
936
def approved_duration_dbus_property(self):
937
return dbus.UInt64(self._timedelta_to_milliseconds(
938
self.approved_duration))
939
940
# name - property
941
@dbus_service_property(_interface, signature=u"s", access=u"read")
942
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):
943
1298
return dbus.String(self.name)
944
1299
945
# fingerprint - property
946
@dbus_service_property(_interface, signature=u"s", access=u"read")
947
def fingerprint_dbus_property(self):
1300
# Fingerprint - property
1301
@dbus_service_property(_interface, signature="s", access="read")
1302
def Fingerprint_dbus_property(self):
948
1303
return dbus.String(self.fingerprint)
949
1304
950
# host - property
951
@dbus_service_property(_interface, signature=u"s",
952
access=u"readwrite")
953
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):
954
1309
if value is None: # get
955
1310
return dbus.String(self.host)
956
self.host = value
957
# Emit D-Bus signal
958
self.PropertyChanged(dbus.String(u"host"),
959
dbus.String(value, variant_level=1))
960
961
# created - property
962
@dbus_service_property(_interface, signature=u"s", access=u"read")
963
def created_dbus_property(self):
964
return dbus.String(self._datetime_to_dbus(self.created))
965
966
# last_enabled - property
967
@dbus_service_property(_interface, signature=u"s", access=u"read")
968
def last_enabled_dbus_property(self):
969
if self.last_enabled is None:
970
return dbus.String(u"")
971
return dbus.String(self._datetime_to_dbus(self.last_enabled))
972
973
# enabled - property
974
@dbus_service_property(_interface, signature=u"b",
975
access=u"readwrite")
976
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):
977
1327
if value is None: # get
978
1328
return dbus.Boolean(self.enabled)
979
1329
if value:
981
1331
else:
982
1332
self.disable()
983
1333
984
# last_checked_ok - property
985
@dbus_service_property(_interface, signature=u"s",
986
access=u"readwrite")
987
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):
988
1338
if value is not None:
989
1339
self.checked_ok()
990
1340
return
991
if self.last_checked_ok is None:
992
return dbus.String(u"")
993
return dbus.String(self._datetime_to_dbus(self
994
.last_checked_ok))
995
996
# timeout - property
997
@dbus_service_property(_interface, signature=u"t",
998
access=u"readwrite")
999
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):
1000
1357
if value is None: # get
1001
1358
return dbus.UInt64(self.timeout_milliseconds())
1002
1359
self.timeout = datetime.timedelta(0, 0, 0, value)
1003
# Emit D-Bus signal
1004
self.PropertyChanged(dbus.String(u"timeout"),
1005
dbus.UInt64(value, variant_level=1))
1006
if getattr(self, u"disable_initiator_tag", None) is None:
1360
if getattr(self, "disable_initiator_tag", None) is None:
1007
1361
return
1008
1362
# Reschedule timeout
1009
1363
gobject.source_remove(self.disable_initiator_tag)
1010
1364
self.disable_initiator_tag = None
1011
time_to_die = (self.
1012
_timedelta_to_milliseconds((self
1013
.last_checked_ok
1014
+ self.timeout)
1015
- datetime.datetime
1016
.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())
1017
1371
if time_to_die <= 0:
1018
1372
# The timeout has passed
1019
1373
self.disable()
1020
1374
else:
1375
self.expires = (datetime.datetime.utcnow()
1376
+ datetime.timedelta(milliseconds =
1377
time_to_die))
1021
1378
self.disable_initiator_tag = (gobject.timeout_add
1022
1379
(time_to_die, self.disable))
1023
1380
1024
# interval - property
1025
@dbus_service_property(_interface, signature=u"t",
1026
access=u"readwrite")
1027
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):
1028
1393
if value is None: # get
1029
1394
return dbus.UInt64(self.interval_milliseconds())
1030
1395
self.interval = datetime.timedelta(0, 0, 0, value)
1031
# Emit D-Bus signal
1032
self.PropertyChanged(dbus.String(u"interval"),
1033
dbus.UInt64(value, variant_level=1))
1034
if getattr(self, u"checker_initiator_tag", None) is None:
1396
if getattr(self, "checker_initiator_tag", None) is None:
1035
1397
return
1036
# Reschedule checker run
1037
gobject.source_remove(self.checker_initiator_tag)
1038
self.checker_initiator_tag = (gobject.timeout_add
1039
(value, self.start_checker))
1040
self.start_checker() # Start one now, too
1041
1042
# checker - property
1043
@dbus_service_property(_interface, signature=u"s",
1044
access=u"readwrite")
1045
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):
1046
1409
if value is None: # get
1047
1410
return dbus.String(self.checker_command)
1048
self.checker_command = value
1049
# Emit D-Bus signal
1050
self.PropertyChanged(dbus.String(u"checker"),
1051
dbus.String(self.checker_command,
1052
variant_level=1))
1411
self.checker_command = unicode(value)
1053
1412
1054
# checker_running - property
1055
@dbus_service_property(_interface, signature=u"b",
1056
access=u"readwrite")
1057
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):
1058
1417
if value is None: # get
1059
1418
return dbus.Boolean(self.checker is not None)
1060
1419
if value:
1062
1421
else:
1063
1422
self.stop_checker()
1064
1423
1065
# object_path - property
1066
@dbus_service_property(_interface, signature=u"o", access=u"read")
1067
def object_path_dbus_property(self):
1424
# ObjectPath - property
1425
@dbus_service_property(_interface, signature="o", access="read")
1426
def ObjectPath_dbus_property(self):
1068
1427
return self.dbus_object_path # is already a dbus.ObjectPath
1069
1428
1070
# secret = property
1071
@dbus_service_property(_interface, signature=u"ay",
1072
access=u"write", byte_arrays=True)
1073
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):
1074
1433
self.secret = str(value)
1075
1434
1076
1435
del _interface
1082
1441
self._pipe.send(('init', fpr, address))
1083
1442
if not self._pipe.recv():
1084
1443
raise KeyError()
1085
1444
1086
1445
def __getattribute__(self, name):
1087
if(name == '_pipe'):
1446
if name == '_pipe':
1088
1447
return super(ProxyClient, self).__getattribute__(name)
1089
1448
self._pipe.send(('getattr', name))
1090
1449
data = self._pipe.recv()
1095
1454
self._pipe.send(('funcall', name, args, kwargs))
1096
1455
return self._pipe.recv()[1]
1097
1456
return func
1098
1457
1099
1458
def __setattr__(self, name, value):
1100
if(name == '_pipe'):
1459
if name == '_pipe':
1101
1460
return super(ProxyClient, self).__setattr__(name, value)
1102
1461
self._pipe.send(('setattr', name, value))
1103
1462
1104
1463
1464
class ClientDBusTransitional(ClientDBus):
1465
__metaclass__ = AlternateDBusNamesMetaclass
1466
1467
1105
1468
class ClientHandler(socketserver.BaseRequestHandler, object):
1106
1469
"""A class to handle client connections.
1107
1470
1110
1473
1111
1474
def handle(self):
1112
1475
with contextlib.closing(self.server.child_pipe) as child_pipe:
1113
logger.info(u"TCP connection from: %s",
1476
logger.info("TCP connection from: %s",
1114
1477
unicode(self.client_address))
1115
logger.debug(u"Pipe FD: %d",
1478
logger.debug("Pipe FD: %d",
1116
1479
self.server.child_pipe.fileno())
1117
1480
1118
1481
session = (gnutls.connection
1119
1482
.ClientSession(self.request,
1120
1483
gnutls.connection
1121
1484
.X509Credentials()))
1122
1485
1123
1486
# Note: gnutls.connection.X509Credentials is really a
1124
1487
# generic GnuTLS certificate credentials object so long as
1125
1488
# no X.509 keys are added to it. Therefore, we can use it
1126
1489
# here despite using OpenPGP certificates.
1127
1128
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1129
# u"+AES-256-CBC", u"+SHA1",
1130
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1131
# u"+DHE-DSS"))
1490
1491
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1492
# "+AES-256-CBC", "+SHA1",
1493
# "+COMP-NULL", "+CTYPE-OPENPGP",
1494
# "+DHE-DSS"))
1132
1495
# Use a fallback default, since this MUST be set.
1133
1496
priority = self.server.gnutls_priority
1134
1497
if priority is None:
1135
priority = u"NORMAL"
1498
priority = "NORMAL"
1136
1499
(gnutls.library.functions
1137
1500
.gnutls_priority_set_direct(session._c_object,
1138
1501
priority, None))
1139
1502
1140
1503
# Start communication using the Mandos protocol
1141
1504
# Get protocol number
1142
1505
line = self.request.makefile().readline()
1143
logger.debug(u"Protocol version: %r", line)
1506
logger.debug("Protocol version: %r", line)
1144
1507
try:
1145
1508
if int(line.strip().split()[0]) > 1:
1146
1509
raise RuntimeError
1147
except (ValueError, IndexError, RuntimeError), error:
1148
logger.error(u"Unknown protocol version: %s", error)
1510
except (ValueError, IndexError, RuntimeError) as error:
1511
logger.error("Unknown protocol version: %s", error)
1149
1512
return
1150
1513
1151
1514
# Start GnuTLS connection
1152
1515
try:
1153
1516
session.handshake()
1154
except gnutls.errors.GNUTLSError, error:
1155
logger.warning(u"Handshake failed: %s", error)
1517
except gnutls.errors.GNUTLSError as error:
1518
logger.warning("Handshake failed: %s", error)
1156
1519
# Do not run session.bye() here: the session is not
1157
1520
# established. Just abandon the request.
1158
1521
return
1159
logger.debug(u"Handshake succeeded")
1160
1522
logger.debug("Handshake succeeded")
1523
1161
1524
approval_required = False
1162
1525
try:
1163
1526
try:
1164
1527
fpr = self.fingerprint(self.peer_certificate
1165
1528
(session))
1166
except (TypeError, gnutls.errors.GNUTLSError), error:
1167
logger.warning(u"Bad certificate: %s", error)
1529
except (TypeError,
1530
gnutls.errors.GNUTLSError) as error:
1531
logger.warning("Bad certificate: %s", error)
1168
1532
return
1169
logger.debug(u"Fingerprint: %s", fpr)
1170
1533
logger.debug("Fingerprint: %s", fpr)
1534
1171
1535
try:
1172
1536
client = ProxyClient(child_pipe, fpr,
1173
1537
self.client_address)
1174
1538
except KeyError:
1175
1539
return
1176
1540
1177
if client.approved_delay:
1178
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
1179
1547
client.approvals_pending += 1
1180
1548
approval_required = True
1181
1549
1182
1550
while True:
1183
1551
if not client.enabled:
1184
logger.warning(u"Client %s is disabled",
1552
logger.info("Client %s is disabled",
1185
1553
client.name)
1186
1554
if self.server.use_dbus:
1187
1555
# Emit D-Bus signal
1188
client.Rejected("Disabled")
1556
client.Rejected("Disabled")
1189
1557
return
1190
1558
1191
if client._approved or not client.approved_delay:
1559
if client.approved or not client.approval_delay:
1192
1560
#We are approved or approval is disabled
1193
1561
break
1194
elif client._approved is None:
1195
logger.info(u"Client %s need approval",
1562
elif client.approved is None:
1563
logger.info("Client %s needs approval",
1196
1564
client.name)
1197
1565
if self.server.use_dbus:
1198
1566
# Emit D-Bus signal
1199
1567
client.NeedApproval(
1200
client.approved_delay_milliseconds(),
1568
client.approval_delay_milliseconds(),
1201
1569
client.approved_by_default)
1202
1570
else:
1203
logger.warning(u"Client %s was not approved",
1571
logger.warning("Client %s was not approved",
1204
1572
client.name)
1205
1573
if self.server.use_dbus:
1206
1574
# Emit D-Bus signal
1207
client.Rejected("Disapproved")
1575
client.Rejected("Denied")
1208
1576
return
1209
1577
1210
1578
#wait until timeout or approved
1211
#x = float(client._timedelta_to_milliseconds(delay))
1212
1579
time = datetime.datetime.now()
1213
1580
client.changedstate.acquire()
1214
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1581
(client.changedstate.wait
1582
(float(client.timedelta_to_milliseconds(delay)
1583
/ 1000)))
1215
1584
client.changedstate.release()
1216
1585
time2 = datetime.datetime.now()
1217
1586
if (time2 - time) >= delay:
1221
1590
client.name)
1222
1591
if self.server.use_dbus:
1223
1592
# Emit D-Bus signal
1224
client.Rejected("Time out")
1593
client.Rejected("Approval timed out")
1225
1594
return
1226
1595
else:
1227
1596
break
1232
1601
while sent_size < len(client.secret):
1233
1602
try:
1234
1603
sent = session.send(client.secret[sent_size:])
1235
except (gnutls.errors.GNUTLSError), error:
1604
except gnutls.errors.GNUTLSError as error:
1236
1605
logger.warning("gnutls send failed")
1237
1606
return
1238
logger.debug(u"Sent: %d, remaining: %d",
1607
logger.debug("Sent: %d, remaining: %d",
1239
1608
sent, len(client.secret)
1240
1609
- (sent_size + sent))
1241
1610
sent_size += sent
1242
1243
logger.info(u"Sending secret to %s", client.name)
1244
# bump the timeout as if seen
1245
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)
1246
1615
if self.server.use_dbus:
1247
1616
# Emit D-Bus signal
1248
1617
client.GotSecret()
1252
1621
client.approvals_pending -= 1
1253
1622
try:
1254
1623
session.bye()
1255
except (gnutls.errors.GNUTLSError), error:
1256
logger.warning("gnutls bye failed")
1624
except gnutls.errors.GNUTLSError as error:
1625
logger.warning("GnuTLS bye failed")
1257
1626
1258
1627
@staticmethod
1259
1628
def peer_certificate(session):
1269
1638
.gnutls_certificate_get_peers
1270
1639
(session._c_object, ctypes.byref(list_size)))
1271
1640
if not bool(cert_list) and list_size.value != 0:
1272
raise gnutls.errors.GNUTLSError(u"error getting peer"
1273
u" certificate")
1641
raise gnutls.errors.GNUTLSError("error getting peer"
1642
" certificate")
1274
1643
if list_size.value == 0:
1275
1644
return None
1276
1645
cert = cert_list[0]
1302
1671
if crtverify.value != 0:
1303
1672
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1304
1673
raise (gnutls.errors.CertificateSecurityError
1305
(u"Verify failed"))
1674
("Verify failed"))
1306
1675
# New buffer for the fingerprint
1307
1676
buf = ctypes.create_string_buffer(20)
1308
1677
buf_len = ctypes.c_size_t()
1315
1684
# Convert the buffer to a Python bytestring
1316
1685
fpr = ctypes.string_at(buf, buf_len.value)
1317
1686
# Convert the bytestring to hexadecimal notation
1318
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1687
hex_fpr = binascii.hexlify(fpr).upper()
1319
1688
return hex_fpr
1320
1689
1321
1690
1324
1693
def sub_process_main(self, request, address):
1325
1694
try:
1326
1695
self.finish_request(request, address)
1327
except:
1696
except Exception:
1328
1697
self.handle_error(request, address)
1329
1698
self.close_request(request)
1330
1699
1331
1700
def process_request(self, request, address):
1332
1701
"""Start a new process to process the request."""
1333
multiprocessing.Process(target = self.sub_process_main,
1334
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
1335
1708
1336
1709
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1337
1710
""" adds a pipe to the MixIn """
1341
1714
This function creates a new pipe in self.pipe
1342
1715
"""
1343
1716
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1344
1345
super(MultiprocessingMixInWithPipe,
1346
self).process_request(request, client_address)
1717
1718
proc = MultiprocessingMixIn.process_request(self, request,
1719
client_address)
1347
1720
self.child_pipe.close()
1348
self.add_pipe(parent_pipe)
1349
1350
def add_pipe(self, parent_pipe):
1721
self.add_pipe(parent_pipe, proc)
1722
1723
def add_pipe(self, parent_pipe, proc):
1351
1724
"""Dummy function; override as necessary"""
1352
pass
1725
raise NotImplementedError
1726
1353
1727
1354
1728
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1355
1729
socketserver.TCPServer, object):
1373
1747
bind to an address or port if they were not specified."""
1374
1748
if self.interface is not None:
1375
1749
if SO_BINDTODEVICE is None:
1376
logger.error(u"SO_BINDTODEVICE does not exist;"
1377
u" cannot bind to interface %s",
1750
logger.error("SO_BINDTODEVICE does not exist;"
1751
" cannot bind to interface %s",
1378
1752
self.interface)
1379
1753
else:
1380
1754
try:
1381
1755
self.socket.setsockopt(socket.SOL_SOCKET,
1382
1756
SO_BINDTODEVICE,
1383
1757
str(self.interface
1384
+ u'\0'))
1385
except socket.error, error:
1758
+ '\0'))
1759
except socket.error as error:
1386
1760
if error[0] == errno.EPERM:
1387
logger.error(u"No permission to"
1388
u" bind to interface %s",
1761
logger.error("No permission to"
1762
" bind to interface %s",
1389
1763
self.interface)
1390
1764
elif error[0] == errno.ENOPROTOOPT:
1391
logger.error(u"SO_BINDTODEVICE not available;"
1392
u" cannot bind to interface %s",
1765
logger.error("SO_BINDTODEVICE not available;"
1766
" cannot bind to interface %s",
1393
1767
self.interface)
1394
1768
else:
1395
1769
raise
1397
1771
if self.server_address[0] or self.server_address[1]:
1398
1772
if not self.server_address[0]:
1399
1773
if self.address_family == socket.AF_INET6:
1400
any_address = u"::" # in6addr_any
1774
any_address = "::" # in6addr_any
1401
1775
else:
1402
1776
any_address = socket.INADDR_ANY
1403
1777
self.server_address = (any_address,
1430
1804
self.enabled = False
1431
1805
self.clients = clients
1432
1806
if self.clients is None:
1433
self.clients = set()
1807
self.clients = {}
1434
1808
self.use_dbus = use_dbus
1435
1809
self.gnutls_priority = gnutls_priority
1436
1810
IPv6_TCPServer.__init__(self, server_address,
1440
1814
def server_activate(self):
1441
1815
if self.enabled:
1442
1816
return socketserver.TCPServer.server_activate(self)
1817
1443
1818
def enable(self):
1444
1819
self.enabled = True
1445
def add_pipe(self, parent_pipe):
1820
1821
def add_pipe(self, parent_pipe, proc):
1446
1822
# Call "handle_ipc" for both data and EOF events
1447
1823
gobject.io_add_watch(parent_pipe.fileno(),
1448
1824
gobject.IO_IN | gobject.IO_HUP,
1449
1825
functools.partial(self.handle_ipc,
1450
parent_pipe = parent_pipe))
1451
1826
parent_pipe =
1827
parent_pipe,
1828
proc = proc))
1829
1452
1830
def handle_ipc(self, source, condition, parent_pipe=None,
1453
client_object=None):
1831
proc = None, client_object=None):
1454
1832
condition_names = {
1455
gobject.IO_IN: u"IN", # There is data to read.
1456
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
1457
1835
# blocking).
1458
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1459
gobject.IO_ERR: u"ERR", # Error condition.
1460
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
1461
1839
# broken, usually for pipes and
1462
1840
# sockets).
1463
1841
}
1465
1843
for cond, name in
1466
1844
condition_names.iteritems()
1467
1845
if cond & condition)
1468
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1469
conditions_string)
1470
1471
# error or the other end of multiprocessing.Pipe has closed
1846
# error, or the other end of multiprocessing.Pipe has closed
1472
1847
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1848
# Wait for other process to exit
1849
proc.join()
1473
1850
return False
1474
1851
1475
1852
# Read a request from the child
1476
1853
request = parent_pipe.recv()
1477
logger.debug(u"IPC request: %s", repr(request))
1478
1854
command = request[0]
1479
1855
1480
1856
if command == 'init':
1481
1857
fpr = request[1]
1482
1858
address = request[2]
1483
1859
1484
for c in self.clients:
1860
for c in self.clients.itervalues():
1485
1861
if c.fingerprint == fpr:
1486
1862
client = c
1487
1863
break
1488
1864
else:
1489
logger.warning(u"Client not found for fingerprint: %s, ad"
1490
u"dress: %s", fpr, address)
1865
logger.info("Client not found for fingerprint: %s, ad"
1866
"dress: %s", fpr, address)
1491
1867
if self.use_dbus:
1492
1868
# Emit D-Bus signal
1493
mandos_dbus_service.ClientNotFound(fpr, address)
1869
mandos_dbus_service.ClientNotFound(fpr,
1870
address[0])
1494
1871
parent_pipe.send(False)
1495
1872
return False
1496
1873
1497
1874
gobject.io_add_watch(parent_pipe.fileno(),
1498
1875
gobject.IO_IN | gobject.IO_HUP,
1499
1876
functools.partial(self.handle_ipc,
1500
parent_pipe = parent_pipe,
1501
client_object = client))
1877
parent_pipe =
1878
parent_pipe,
1879
proc = proc,
1880
client_object =
1881
client))
1502
1882
parent_pipe.send(True)
1503
# 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
1504
1885
return False
1505
1886
if command == 'funcall':
1506
1887
funcname = request[1]
1507
1888
args = request[2]
1508
1889
kwargs = request[3]
1509
1890
1510
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1511
1891
parent_pipe.send(('data', getattr(client_object,
1892
funcname)(*args,
1893
**kwargs)))
1894
1512
1895
if command == 'getattr':
1513
1896
attrname = request[1]
1514
1897
if callable(client_object.__getattribute__(attrname)):
1515
1898
parent_pipe.send(('function',))
1516
1899
else:
1517
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1900
parent_pipe.send(('data', client_object
1901
.__getattribute__(attrname)))
1518
1902
1519
1903
if command == 'setattr':
1520
1904
attrname = request[1]
1521
1905
value = request[2]
1522
1906
setattr(client_object, attrname, value)
1523
1907
1524
1908
return True
1525
1909
1526
1910
1527
1911
def string_to_delta(interval):
1528
1912
"""Parse a string and return a datetime.timedelta
1529
1913
1530
>>> string_to_delta(u'7d')
1914
>>> string_to_delta('7d')
1531
1915
datetime.timedelta(7)
1532
>>> string_to_delta(u'60s')
1916
>>> string_to_delta('60s')
1533
1917
datetime.timedelta(0, 60)
1534
>>> string_to_delta(u'60m')
1918
>>> string_to_delta('60m')
1535
1919
datetime.timedelta(0, 3600)
1536
>>> string_to_delta(u'24h')
1920
>>> string_to_delta('24h')
1537
1921
datetime.timedelta(1)
1538
>>> string_to_delta(u'1w')
1922
>>> string_to_delta('1w')
1539
1923
datetime.timedelta(7)
1540
>>> string_to_delta(u'5m 30s')
1924
>>> string_to_delta('5m 30s')
1541
1925
datetime.timedelta(0, 330)
1542
1926
"""
1543
1927
timevalue = datetime.timedelta(0)
1545
1929
try:
1546
1930
suffix = unicode(s[-1])
1547
1931
value = int(s[:-1])
1548
if suffix == u"d":
1932
if suffix == "d":
1549
1933
delta = datetime.timedelta(value)
1550
elif suffix == u"s":
1934
elif suffix == "s":
1551
1935
delta = datetime.timedelta(0, value)
1552
elif suffix == u"m":
1936
elif suffix == "m":
1553
1937
delta = datetime.timedelta(0, 0, 0, 0, value)
1554
elif suffix == u"h":
1938
elif suffix == "h":
1555
1939
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1556
elif suffix == u"w":
1940
elif suffix == "w":
1557
1941
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1558
1942
else:
1559
raise ValueError(u"Unknown suffix %r" % suffix)
1560
except (ValueError, IndexError), e:
1561
raise ValueError(e.message)
1943
raise ValueError("Unknown suffix %r" % suffix)
1944
except (ValueError, IndexError) as e:
1945
raise ValueError(*(e.args))
1562
1946
timevalue += delta
1563
1947
return timevalue
1564
1948
1565
1949
1566
def if_nametoindex(interface):
1567
"""Call the C function if_nametoindex(), or equivalent
1568
1569
Note: This function cannot accept a unicode string."""
1570
global if_nametoindex
1571
try:
1572
if_nametoindex = (ctypes.cdll.LoadLibrary
1573
(ctypes.util.find_library(u"c"))
1574
.if_nametoindex)
1575
except (OSError, AttributeError):
1576
logger.warning(u"Doing if_nametoindex the hard way")
1577
def if_nametoindex(interface):
1578
"Get an interface index the hard way, i.e. using fcntl()"
1579
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1580
with contextlib.closing(socket.socket()) as s:
1581
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1582
struct.pack(str(u"16s16x"),
1583
interface))
1584
interface_index = struct.unpack(str(u"I"),
1585
ifreq[16:20])[0]
1586
return interface_index
1587
return if_nametoindex(interface)
1588
1589
1590
1950
def daemon(nochdir = False, noclose = False):
1591
1951
"""See daemon(3). Standard BSD Unix function.
1592
1952
1595
1955
sys.exit()
1596
1956
os.setsid()
1597
1957
if not nochdir:
1598
os.chdir(u"/")
1958
os.chdir("/")
1599
1959
if os.fork():
1600
1960
sys.exit()
1601
1961
if not noclose:
1603
1963
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1604
1964
if not stat.S_ISCHR(os.fstat(null).st_mode):
1605
1965
raise OSError(errno.ENODEV,
1606
u"%s not a character device"
1966
"%s not a character device"
1607
1967
% os.path.devnull)
1608
1968
os.dup2(null, sys.stdin.fileno())
1609
1969
os.dup2(null, sys.stdout.fileno())
1617
1977
##################################################################
1618
1978
# Parsing of options, both command line and config file
1619
1979
1620
parser = optparse.OptionParser(version = "%%prog %s" % version)
1621
parser.add_option("-i", u"--interface", type=u"string",
1622
metavar="IF", help=u"Bind to interface IF")
1623
parser.add_option("-a", u"--address", type=u"string",
1624
help=u"Address to listen for requests on")
1625
parser.add_option("-p", u"--port", type=u"int",
1626
help=u"Port number to receive requests on")
1627
parser.add_option("--check", action=u"store_true",
1628
help=u"Run self-test")
1629
parser.add_option("--debug", action=u"store_true",
1630
help=u"Debug mode; run in foreground and log to"
1631
u" terminal")
1632
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1633
help=u"Debug level for stdout output")
1634
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1635
u" priority string (see GnuTLS documentation)")
1636
parser.add_option("--servicename", type=u"string",
1637
metavar=u"NAME", help=u"Zeroconf service name")
1638
parser.add_option("--configdir", type=u"string",
1639
default=u"/etc/mandos", metavar=u"DIR",
1640
help=u"Directory to search for configuration"
1641
u" files")
1642
parser.add_option("--no-dbus", action=u"store_false",
1643
dest=u"use_dbus", help=u"Do not provide D-Bus"
1644
u" system bus interface")
1645
parser.add_option("--no-ipv6", action=u"store_false",
1646
dest=u"use_ipv6", help=u"Do not use IPv6")
1647
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()
1648
2017
1649
2018
if options.check:
1650
2019
import doctest
1652
2021
sys.exit()
1653
2022
1654
2023
# Default values for config file for server-global settings
1655
server_defaults = { u"interface": u"",
1656
u"address": u"",
1657
u"port": u"",
1658
u"debug": u"False",
1659
u"priority":
1660
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1661
u"servicename": u"Mandos",
1662
u"use_dbus": u"True",
1663
u"use_ipv6": u"True",
1664
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"
1665
2036
}
1666
2037
1667
2038
# Parse config file for server-global settings
1668
2039
server_config = configparser.SafeConfigParser(server_defaults)
1669
2040
del server_defaults
1670
2041
server_config.read(os.path.join(options.configdir,
1671
u"mandos.conf"))
2042
"mandos.conf"))
1672
2043
# Convert the SafeConfigParser object to a dict
1673
2044
server_settings = server_config.defaults()
1674
2045
# Use the appropriate methods on the non-string config options
1675
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1676
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",
1677
2048
option)
1678
2049
if server_settings["port"]:
1679
server_settings["port"] = server_config.getint(u"DEFAULT",
1680
u"port")
2050
server_settings["port"] = server_config.getint("DEFAULT",
2051
"port")
1681
2052
del server_config
1682
2053
1683
2054
# Override the settings from the config file with command line
1684
2055
# options, if set.
1685
for option in (u"interface", u"address", u"port", u"debug",
1686
u"priority", u"servicename", u"configdir",
1687
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"):
1688
2060
value = getattr(options, option)
1689
2061
if value is not None:
1690
2062
server_settings[option] = value
1698
2070
##################################################################
1699
2071
1700
2072
# For convenience
1701
debug = server_settings[u"debug"]
1702
debuglevel = server_settings[u"debuglevel"]
1703
use_dbus = server_settings[u"use_dbus"]
1704
use_ipv6 = server_settings[u"use_ipv6"]
1705
1706
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":
1707
2090
syslogger.setFormatter(logging.Formatter
1708
(u'Mandos (%s) [%%(process)d]:'
1709
u' %%(levelname)s: %%(message)s'
1710
% server_settings[u"servicename"]))
2091
('Mandos (%s) [%%(process)d]:'
2092
' %%(levelname)s: %%(message)s'
2093
% server_settings["servicename"]))
1711
2094
1712
2095
# Parse config file with clients
1713
client_defaults = { u"timeout": u"1h",
1714
u"interval": u"5m",
1715
u"checker": u"fping -q -- %%(host)s",
1716
u"host": u"",
1717
u"approved_delay": u"0s",
1718
u"approved_duration": u"1s",
1719
}
1720
client_config = configparser.SafeConfigParser(client_defaults)
1721
client_config.read(os.path.join(server_settings[u"configdir"],
1722
u"clients.conf"))
2096
client_config = configparser.SafeConfigParser(Client.client_defaults)
2097
client_config.read(os.path.join(server_settings["configdir"],
2098
"clients.conf"))
1723
2099
1724
2100
global mandos_dbus_service
1725
2101
mandos_dbus_service = None
1726
2102
1727
tcp_server = MandosServer((server_settings[u"address"],
1728
server_settings[u"port"]),
2103
tcp_server = MandosServer((server_settings["address"],
2104
server_settings["port"]),
1729
2105
ClientHandler,
1730
interface=server_settings[u"interface"],
2106
interface=(server_settings["interface"]
2107
or None),
1731
2108
use_ipv6=use_ipv6,
1732
2109
gnutls_priority=
1733
server_settings[u"priority"],
2110
server_settings["priority"],
1734
2111
use_dbus=use_dbus)
1735
pidfilename = u"/var/run/mandos.pid"
1736
try:
1737
pidfile = open(pidfilename, u"w")
1738
except IOError:
1739
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)
1740
2118
1741
2119
try:
1742
uid = pwd.getpwnam(u"_mandos").pw_uid
1743
gid = pwd.getpwnam(u"_mandos").pw_gid
2120
uid = pwd.getpwnam("_mandos").pw_uid
2121
gid = pwd.getpwnam("_mandos").pw_gid
1744
2122
except KeyError:
1745
2123
try:
1746
uid = pwd.getpwnam(u"mandos").pw_uid
1747
gid = pwd.getpwnam(u"mandos").pw_gid
2124
uid = pwd.getpwnam("mandos").pw_uid
2125
gid = pwd.getpwnam("mandos").pw_gid
1748
2126
except KeyError:
1749
2127
try:
1750
uid = pwd.getpwnam(u"nobody").pw_uid
1751
gid = pwd.getpwnam(u"nobody").pw_gid
2128
uid = pwd.getpwnam("nobody").pw_uid
2129
gid = pwd.getpwnam("nobody").pw_gid
1752
2130
except KeyError:
1753
2131
uid = 65534
1754
2132
gid = 65534
1755
2133
try:
1756
2134
os.setgid(gid)
1757
2135
os.setuid(uid)
1758
except OSError, error:
2136
except OSError as error:
1759
2137
if error[0] != errno.EPERM:
1760
2138
raise error
1761
2139
1762
# Enable all possible GnuTLS debugging
1763
1764
1765
if not debug and not debuglevel:
1766
syslogger.setLevel(logging.WARNING)
1767
console.setLevel(logging.WARNING)
1768
if debuglevel:
1769
level = getattr(logging, debuglevel.upper())
1770
syslogger.setLevel(level)
1771
console.setLevel(level)
1772
1773
2140
if debug:
2141
# Enable all possible GnuTLS debugging
2142
1774
2143
# "Use a log level over 10 to enable all debugging options."
1775
2144
# - GnuTLS manual
1776
2145
gnutls.library.functions.gnutls_global_set_log_level(11)
1777
2146
1778
2147
@gnutls.library.types.gnutls_log_func
1779
2148
def debug_gnutls(level, string):
1780
logger.debug(u"GnuTLS: %s", string[:-1])
2149
logger.debug("GnuTLS: %s", string[:-1])
1781
2150
1782
2151
(gnutls.library.functions
1783
2152
.gnutls_global_set_log_function(debug_gnutls))
1784
2153
1785
2154
# Redirect stdin so all checkers get /dev/null
1786
2155
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1787
2156
os.dup2(null, sys.stdin.fileno())
1790
2159
else:
1791
2160
# No console logging
1792
2161
logger.removeHandler(console)
1793
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()
1794
2167
1795
2168
global main_loop
1796
2169
# From the Avahi example code
1800
2173
# End of Avahi example code
1801
2174
if use_dbus:
1802
2175
try:
1803
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2176
bus_name = dbus.service.BusName("se.recompile.Mandos",
1804
2177
bus, do_not_queue=True)
1805
except dbus.exceptions.NameExistsException, e:
1806
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")
1807
2183
use_dbus = False
1808
server_settings[u"use_dbus"] = False
2184
server_settings["use_dbus"] = False
1809
2185
tcp_server.use_dbus = False
1810
2186
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1811
service = AvahiService(name = server_settings[u"servicename"],
1812
servicetype = u"_mandos._tcp",
1813
protocol = protocol, bus = bus)
2187
service = AvahiServiceToSyslog(name =
2188
server_settings["servicename"],
2189
servicetype = "_mandos._tcp",
2190
protocol = protocol, bus = bus)
1814
2191
if server_settings["interface"]:
1815
2192
service.interface = (if_nametoindex
1816
(str(server_settings[u"interface"])))
1817
1818
if not debug:
1819
# Close all input and output, do double fork, etc.
1820
daemon()
1821
2193
(str(server_settings["interface"])))
2194
1822
2195
global multiprocessing_manager
1823
2196
multiprocessing_manager = multiprocessing.Manager()
1824
2197
1825
2198
client_class = Client
1826
2199
if use_dbus:
1827
client_class = functools.partial(ClientDBus, bus = bus)
1828
def client_config_items(config, section):
1829
special_settings = {
1830
"approved_by_default":
1831
lambda: config.getboolean(section,
1832
"approved_by_default"),
1833
}
1834
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
1835
2263
try:
1836
yield (name, special_settings[name]())
1837
except KeyError:
1838
yield (name, value)
1839
1840
tcp_server.clients.update(set(
1841
client_class(name = section,
1842
config= dict(client_config_items(
1843
client_config, section)))
1844
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
1845
2287
if not tcp_server.clients:
1846
logger.warning(u"No clients defined")
2288
logger.warning("No clients defined")
1847
2289
1848
try:
1849
with pidfile:
1850
pid = os.getpid()
1851
pidfile.write(str(pid) + "\n")
1852
del pidfile
1853
except IOError:
1854
logger.error(u"Could not write to file %r with PID %d",
1855
pidfilename, pid)
1856
except NameError:
1857
# "pidfile" was never created
1858
pass
1859
del pidfilename
1860
1861
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
1862
2303
signal.signal(signal.SIGINT, signal.SIG_IGN)
2304
1863
2305
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1864
2306
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1865
2307
1867
2309
class MandosDBusService(dbus.service.Object):
1868
2310
"""A D-Bus proxy object"""
1869
2311
def __init__(self):
1870
dbus.service.Object.__init__(self, bus, u"/")
1871
_interface = u"se.bsnet.fukt.Mandos"
2312
dbus.service.Object.__init__(self, bus, "/")
2313
_interface = "se.recompile.Mandos"
1872
2314
1873
@dbus.service.signal(_interface, signature=u"o")
2315
@dbus.service.signal(_interface, signature="o")
1874
2316
def ClientAdded(self, objpath):
1875
2317
"D-Bus signal"
1876
2318
pass
1877
2319
1878
@dbus.service.signal(_interface, signature=u"ss")
2320
@dbus.service.signal(_interface, signature="ss")
1879
2321
def ClientNotFound(self, fingerprint, address):
1880
2322
"D-Bus signal"
1881
2323
pass
1882
2324
1883
@dbus.service.signal(_interface, signature=u"os")
2325
@dbus.service.signal(_interface, signature="os")
1884
2326
def ClientRemoved(self, objpath, name):
1885
2327
"D-Bus signal"
1886
2328
pass
1887
2329
1888
@dbus.service.method(_interface, out_signature=u"ao")
2330
@dbus.service.method(_interface, out_signature="ao")
1889
2331
def GetAllClients(self):
1890
2332
"D-Bus method"
1891
2333
return dbus.Array(c.dbus_object_path
1892
for c in tcp_server.clients)
2334
for c in
2335
tcp_server.clients.itervalues())
1893
2336
1894
2337
@dbus.service.method(_interface,
1895
out_signature=u"a{oa{sv}}")
2338
out_signature="a{oa{sv}}")
1896
2339
def GetAllClientsWithProperties(self):
1897
2340
"D-Bus method"
1898
2341
return dbus.Dictionary(
1899
((c.dbus_object_path, c.GetAll(u""))
1900
for c in tcp_server.clients),
1901
signature=u"oa{sv}")
2342
((c.dbus_object_path, c.GetAll(""))
2343
for c in tcp_server.clients.itervalues()),
2344
signature="oa{sv}")
1902
2345
1903
@dbus.service.method(_interface, in_signature=u"o")
2346
@dbus.service.method(_interface, in_signature="o")
1904
2347
def RemoveClient(self, object_path):
1905
2348
"D-Bus method"
1906
for c in tcp_server.clients:
2349
for c in tcp_server.clients.itervalues():
1907
2350
if c.dbus_object_path == object_path:
1908
tcp_server.clients.remove(c)
2351
del tcp_server.clients[c.name]
1909
2352
c.remove_from_connection()
1910
2353
# Don't signal anything except ClientRemoved
1911
2354
c.disable(quiet=True)
1916
2359
1917
2360
del _interface
1918
2361
1919
mandos_dbus_service = MandosDBusService()
2362
class MandosDBusServiceTransitional(MandosDBusService):
2363
__metaclass__ = AlternateDBusNamesMetaclass
2364
mandos_dbus_service = MandosDBusServiceTransitional()
1920
2365
1921
2366
def cleanup():
1922
2367
"Cleanup function; run on exit"
1923
2368
service.cleanup()
1924
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
1925
2414
while tcp_server.clients:
1926
client = tcp_server.clients.pop()
2415
name, client = tcp_server.clients.popitem()
1927
2416
if use_dbus:
1928
2417
client.remove_from_connection()
1929
client.disable_hook = None
1930
2418
# Don't signal anything except ClientRemoved
1931
2419
client.disable(quiet=True)
1932
2420
if use_dbus:
1933
2421
# Emit D-Bus signal
1934
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2422
mandos_dbus_service.ClientRemoved(client
2423
.dbus_object_path,
1935
2424
client.name)
2425
client_settings.clear()
1936
2426
1937
2427
atexit.register(cleanup)
1938
2428
1939
for client in tcp_server.clients:
2429
for client in tcp_server.clients.itervalues():
1940
2430
if use_dbus:
1941
2431
# Emit D-Bus signal
1942
2432
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1943
client.enable()
2433
# Need to initiate checking of clients
2434
if client.enabled:
2435
client.init_checker()
1944
2436
1945
2437
tcp_server.enable()
1946
2438
tcp_server.server_activate()
1948
2440
# Find out what port we got
1949
2441
service.port = tcp_server.socket.getsockname()[1]
1950
2442
if use_ipv6:
1951
logger.info(u"Now listening on address %r, port %d,"
2443
logger.info("Now listening on address %r, port %d,"
1952
2444
" flowinfo %d, scope_id %d"
1953
2445
% tcp_server.socket.getsockname())
1954
2446
else: # IPv4
1955
logger.info(u"Now listening on address %r, port %d"
2447
logger.info("Now listening on address %r, port %d"
1956
2448
% tcp_server.socket.getsockname())
1957
2449
1958
2450
#service.interface = tcp_server.socket.getsockname()[3]
1961
2453
# From the Avahi example code
1962
2454
try:
1963
2455
service.activate()
1964
except dbus.exceptions.DBusException, error:
1965
logger.critical(u"DBusException: %s", error)
2456
except dbus.exceptions.DBusException as error:
2457
logger.critical("DBusException: %s", error)
1966
2458
cleanup()
1967
2459
sys.exit(1)
1968
2460
# End of Avahi example code
1972
2464
(tcp_server.handle_request
1973
2465
(*args[2:], **kwargs) or True))
1974
2466
1975
logger.debug(u"Starting main loop")
2467
logger.debug("Starting main loop")
1976
2468
main_loop.run()
1977
except AvahiError, error:
1978
logger.critical(u"AvahiError: %s", error)
2469
except AvahiError as error:
2470
logger.critical("AvahiError: %s", error)
1979
2471
cleanup()
1980
2472
sys.exit(1)
1981
2473
except KeyboardInterrupt:
1982
2474
if debug:
1983
print >> sys.stderr
1984
logger.debug(u"Server received KeyboardInterrupt")
1985
logger.debug(u"Server exiting")
2475
print("", file=sys.stderr)
2476
logger.debug("Server received KeyboardInterrupt")
2477
logger.debug("Server exiting")
1986
2478
# Must run before the D-Bus bus name gets deregistered
1987
2479
cleanup()
1988
2480
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0