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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 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
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# 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
29
# <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
60
61
import fcntl
61
62
import functools
62
63
import cPickle as pickle
63
import select
64
import multiprocessing
65
import types
66
import binascii
67
import tempfile
64
68
65
69
import dbus
66
70
import dbus.service
71
75
import ctypes.util
72
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.Logger(u'mandos')
88
version = "1.4.1"
89
stored_state_file = "clients.pickle"
90
91
logger = logging.getLogger()
87
92
syslogger = (logging.handlers.SysLogHandler
88
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
89
address = "/dev/log"))
90
syslogger.setFormatter(logging.Formatter
91
(u'Mandos [%(process)d]: %(levelname)s:'
92
u' %(message)s'))
93
logger.addHandler(syslogger)
94
95
console = logging.StreamHandler()
96
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
97
u' %(levelname)s:'
98
u' %(message)s'))
99
logger.addHandler(console)
94
address = str("/dev/log")))
95
96
try:
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
100
except (OSError, AttributeError):
101
def if_nametoindex(interface):
102
"Get an interface index the hard way, i.e. using fcntl()"
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
with contextlib.closing(socket.socket()) as s:
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
110
return interface_index
111
112
113
def initlogger(level=logging.WARNING):
114
"""init logger and add loglevel"""
115
116
syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
118
' %(message)s'))
119
logger.addHandler(syslogger)
120
121
console = logging.StreamHandler()
122
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
123
' [%(process)d]:'
124
' %(levelname)s:'
125
' %(message)s'))
126
logger.addHandler(console)
127
logger.setLevel(level)
128
129
130
class PGPError(Exception):
131
"""Exception if encryption/decryption fails"""
132
pass
133
134
135
class PGPEngine(object):
136
"""A simple class for OpenPGP symmetric encryption & decryption"""
137
def __init__(self):
138
self.gnupg = GnuPGInterface.GnuPG()
139
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.gnupg.options.meta_interactive = False
142
self.gnupg.options.homedir = self.tempdir
143
self.gnupg.options.extra_args.extend(['--force-mdc',
144
'--quiet'])
145
146
def __enter__(self):
147
return self
148
149
def __exit__ (self, exc_type, exc_value, traceback):
150
self._cleanup()
151
return False
152
153
def __del__(self):
154
self._cleanup()
155
156
def _cleanup(self):
157
if self.tempdir is not None:
158
# Delete contents of tempdir
159
for root, dirs, files in os.walk(self.tempdir,
160
topdown = False):
161
for filename in files:
162
os.remove(os.path.join(root, filename))
163
for dirname in dirs:
164
os.rmdir(os.path.join(root, dirname))
165
# Remove tempdir
166
os.rmdir(self.tempdir)
167
self.tempdir = None
168
169
def password_encode(self, password):
170
# Passphrase can not be empty and can not contain newlines or
171
# NUL bytes. So we prefix it and hex encode it.
172
return b"mandos" + binascii.hexlify(password)
173
174
def encrypt(self, data, password):
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
177
try:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
182
f.write(data)
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
185
proc.wait()
186
except IOError as e:
187
raise PGPError(e)
188
self.gnupg.passphrase = None
189
return ciphertext
190
191
def decrypt(self, data, password):
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
194
try:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
199
f.write(data)
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
202
proc.wait()
203
except IOError as e:
204
raise PGPError(e)
205
self.gnupg.passphrase = None
206
return decrypted_plaintext
207
208
100
209
101
210
class AvahiError(Exception):
102
211
def __init__(self, value, *args, **kwargs):
118
227
Attributes:
119
228
interface: integer; avahi.IF_UNSPEC or an interface index.
120
229
Used to optionally bind to the specified interface.
121
name: string; Example: u'Mandos'
122
type: string; Example: u'_mandos._tcp'.
230
name: string; Example: 'Mandos'
231
type: string; Example: '_mandos._tcp'.
123
232
See <http://www.dns-sd.org/ServiceTypes.html>
124
233
port: integer; what port to announce
125
234
TXT: list of strings; TXT record for the service
134
243
"""
135
244
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
136
245
servicetype = None, port = None, TXT = None,
137
domain = u"", host = u"", max_renames = 32768,
246
domain = "", host = "", max_renames = 32768,
138
247
protocol = avahi.PROTO_UNSPEC, bus = None):
139
248
self.interface = interface
140
249
self.name = name
149
258
self.group = None # our entry group
150
259
self.server = None
151
260
self.bus = bus
261
self.entry_group_state_changed_match = None
152
262
def rename(self):
153
263
"""Derived from the Avahi example code"""
154
264
if self.rename_count >= self.max_renames:
155
logger.critical(u"No suitable Zeroconf service name found"
156
u" after %i retries, exiting.",
265
logger.critical("No suitable Zeroconf service name found"
266
" after %i retries, exiting.",
157
267
self.rename_count)
158
raise AvahiServiceError(u"Too many renames")
159
self.name = self.server.GetAlternativeServiceName(self.name)
160
logger.info(u"Changing Zeroconf service name to %r ...",
161
unicode(self.name))
162
syslogger.setFormatter(logging.Formatter
163
(u'Mandos (%s) [%%(process)d]:'
164
u' %%(levelname)s: %%(message)s'
165
% self.name))
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 ...",
272
self.name)
166
273
self.remove()
167
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)
168
280
self.rename_count += 1
169
281
def remove(self):
170
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
171
286
if self.group is not None:
172
287
self.group.Reset()
173
288
def add(self):
174
289
"""Derived from the Avahi example code"""
290
self.remove()
175
291
if self.group is None:
176
292
self.group = dbus.Interface(
177
293
self.bus.get_object(avahi.DBUS_NAME,
178
294
self.server.EntryGroupNew()),
179
295
avahi.DBUS_INTERFACE_ENTRY_GROUP)
180
self.group.connect_to_signal('StateChanged',
181
self
182
.entry_group_state_changed)
183
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' ...",
184
300
self.name, self.type)
185
301
self.group.AddService(
186
302
self.interface,
193
309
self.group.Commit()
194
310
def entry_group_state_changed(self, state, error):
195
311
"""Derived from the Avahi example code"""
196
logger.debug(u"Avahi entry group state change: %i", state)
312
logger.debug("Avahi entry group state change: %i", state)
197
313
198
314
if state == avahi.ENTRY_GROUP_ESTABLISHED:
199
logger.debug(u"Zeroconf service established.")
315
logger.debug("Zeroconf service established.")
200
316
elif state == avahi.ENTRY_GROUP_COLLISION:
201
logger.warning(u"Zeroconf service name collision.")
317
logger.info("Zeroconf service name collision.")
202
318
self.rename()
203
319
elif state == avahi.ENTRY_GROUP_FAILURE:
204
logger.critical(u"Avahi: Error in group state changed %s",
320
logger.critical("Avahi: Error in group state changed %s",
205
321
unicode(error))
206
raise AvahiGroupError(u"State changed: %s"
322
raise AvahiGroupError("State changed: %s"
207
323
% unicode(error))
208
324
def cleanup(self):
209
325
"""Derived from the Avahi example code"""
210
326
if self.group is not None:
211
self.group.Free()
327
try:
328
self.group.Free()
329
except (dbus.exceptions.UnknownMethodException,
330
dbus.exceptions.DBusException):
331
pass
212
332
self.group = None
213
def server_state_changed(self, state):
333
self.remove()
334
def server_state_changed(self, state, error=None):
214
335
"""Derived from the Avahi example code"""
215
logger.debug(u"Avahi server state change: %i", state)
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
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
262
427
"""
263
428
264
@staticmethod
265
def _timedelta_to_milliseconds(td):
266
"Convert a datetime.timedelta() to milliseconds"
267
return ((td.days * 24 * 60 * 60 * 1000)
268
+ (td.seconds * 1000)
269
+ (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
}
270
443
271
444
def timeout_milliseconds(self):
272
445
"Return the 'timeout' attribute in milliseconds"
273
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)
274
451
275
452
def interval_milliseconds(self):
276
453
"Return the 'interval' attribute in milliseconds"
277
return self._timedelta_to_milliseconds(self.interval)
454
return timedelta_to_milliseconds(self.interval)
278
455
279
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):
280
511
"""Note: the 'checker' key in 'config' sets the
281
512
'checker_command' attribute and *not* the 'checker'
282
513
attribute."""
283
514
self.name = name
284
if config is None:
285
config = {}
286
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)
287
520
# Uppercase and remove spaces from fingerprint for later
288
521
# comparison purposes with return value from the fingerprint()
289
522
# function
290
self.fingerprint = (config[u"fingerprint"].upper()
291
.replace(u" ", u""))
292
logger.debug(u" Fingerprint: %s", self.fingerprint)
293
if u"secret" in config:
294
self.secret = config[u"secret"].decode(u"base64")
295
elif u"secfile" in config:
296
with open(os.path.expanduser(os.path.expandvars
297
(config[u"secfile"])),
298
"rb") as secfile:
299
self.secret = secfile.read()
300
else:
301
raise TypeError(u"No secret or secfile for client %s"
302
% self.name)
303
self.host = config.get(u"host", u"")
304
self.created = datetime.datetime.utcnow()
305
self.enabled = False
306
self.last_enabled = None
307
self.last_checked_ok = None
308
self.timeout = string_to_delta(config[u"timeout"])
309
self.interval = string_to_delta(config[u"interval"])
310
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
311
527
self.checker = None
312
528
self.checker_initiator_tag = None
313
529
self.disable_initiator_tag = None
314
530
self.checker_callback_tag = None
315
self.checker_command = config[u"checker"]
316
531
self.current_checker_command = None
317
self.last_connect = None
532
self.approved = None
533
self.approvals_pending = 0
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)
548
549
# Send notice to process children that client state has changed
550
def send_changedstate(self):
551
with self.changedstate:
552
self.changedstate.notify_all()
318
553
319
554
def enable(self):
320
555
"""Start this client's checker and timeout hooks"""
321
if getattr(self, u"enabled", False):
556
if getattr(self, "enabled", False):
322
557
# Already enabled
323
558
return
559
self.send_changedstate()
560
self.expires = datetime.datetime.utcnow() + self.timeout
561
self.enabled = True
324
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):
325
589
# Schedule a new checker to be started an 'interval' from now,
326
590
# and every interval from then on.
327
591
self.checker_initiator_tag = (gobject.timeout_add
331
595
self.disable_initiator_tag = (gobject.timeout_add
332
596
(self.timeout_milliseconds(),
333
597
self.disable))
334
self.enabled = True
335
598
# Also start a new checker *right now*.
336
599
self.start_checker()
337
600
338
def disable(self, quiet=True):
339
"""Disable this client."""
340
if not getattr(self, "enabled", False):
341
return False
342
if not quiet:
343
logger.info(u"Disabling client %s", self.name)
344
if getattr(self, u"disable_initiator_tag", False):
345
gobject.source_remove(self.disable_initiator_tag)
346
self.disable_initiator_tag = None
347
if getattr(self, u"checker_initiator_tag", False):
348
gobject.source_remove(self.checker_initiator_tag)
349
self.checker_initiator_tag = None
350
self.stop_checker()
351
if self.disable_hook:
352
self.disable_hook(self)
353
self.enabled = False
354
# Do not run this again if called by a gobject.timeout_add
355
return False
356
357
def __del__(self):
358
self.disable_hook = None
359
self.disable()
360
361
601
def checker_callback(self, pid, condition, command):
362
602
"""The checker has completed, so take appropriate actions."""
363
603
self.checker_callback_tag = None
364
604
self.checker = None
365
605
if os.WIFEXITED(condition):
366
exitstatus = os.WEXITSTATUS(condition)
367
if exitstatus == 0:
368
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",
369
609
vars(self))
370
610
self.checked_ok()
371
611
else:
372
logger.info(u"Checker for %(name)s failed",
612
logger.info("Checker for %(name)s failed",
373
613
vars(self))
374
614
else:
375
logger.warning(u"Checker for %(name)s crashed?",
615
self.last_checker_status = -1
616
logger.warning("Checker for %(name)s crashed?",
376
617
vars(self))
377
618
378
def checked_ok(self):
619
def checked_ok(self, timeout=None):
379
620
"""Bump up the timeout for this client.
380
621
381
622
This should only be called when the client has been seen,
382
623
alive and well.
383
624
"""
625
if timeout is None:
626
timeout = self.timeout
384
627
self.last_checked_ok = datetime.datetime.utcnow()
385
gobject.source_remove(self.disable_initiator_tag)
386
self.disable_initiator_tag = (gobject.timeout_add
387
(self.timeout_milliseconds(),
388
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()
389
638
390
639
def start_checker(self):
391
640
"""Start a new checker subprocess if one is not running.
404
653
# If a checker exists, make sure it is not a zombie
405
654
try:
406
655
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
407
except (AttributeError, OSError), error:
656
except (AttributeError, OSError) as error:
408
657
if (isinstance(error, OSError)
409
658
and error.errno != errno.ECHILD):
410
659
raise error
411
660
else:
412
661
if pid:
413
logger.warning(u"Checker was a zombie")
662
logger.warning("Checker was a zombie")
414
663
gobject.source_remove(self.checker_callback_tag)
415
664
self.checker_callback(pid, status,
416
665
self.current_checker_command)
421
670
command = self.checker_command % self.host
422
671
except TypeError:
423
672
# Escape attributes for the shell
424
escaped_attrs = dict((key,
425
re.escape(unicode(str(val),
426
errors=
427
u'replace')))
428
for key, val in
429
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
430
681
try:
431
682
command = self.checker_command % escaped_attrs
432
except TypeError, error:
433
logger.error(u'Could not format string "%s":'
434
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)
435
686
return True # Try again later
436
687
self.current_checker_command = command
437
688
try:
438
logger.info(u"Starting checker %r for %s",
689
logger.info("Starting checker %r for %s",
439
690
command, self.name)
440
691
# We don't need to redirect stdout and stderr, since
441
692
# in normal mode, that is already done by daemon(),
443
694
# always replaced by /dev/null.)
444
695
self.checker = subprocess.Popen(command,
445
696
close_fds=True,
446
shell=True, cwd=u"/")
697
shell=True, cwd="/")
447
698
self.checker_callback_tag = (gobject.child_watch_add
448
699
(self.checker.pid,
449
700
self.checker_callback,
454
705
if pid:
455
706
gobject.source_remove(self.checker_callback_tag)
456
707
self.checker_callback(pid, status, command)
457
except OSError, error:
458
logger.error(u"Failed to start subprocess: %s",
708
except OSError as error:
709
logger.error("Failed to start subprocess: %s",
459
710
error)
460
711
# Re-run this periodically if run by gobject.timeout_add
461
712
return True
465
716
if self.checker_callback_tag:
466
717
gobject.source_remove(self.checker_callback_tag)
467
718
self.checker_callback_tag = None
468
if getattr(self, u"checker", None) is None:
719
if getattr(self, "checker", None) is None:
469
720
return
470
logger.debug(u"Stopping checker for %(name)s", vars(self))
721
logger.debug("Stopping checker for %(name)s", vars(self))
471
722
try:
472
723
os.kill(self.checker.pid, signal.SIGTERM)
473
724
#time.sleep(0.5)
474
725
#if self.checker.poll() is None:
475
726
# os.kill(self.checker.pid, signal.SIGKILL)
476
except OSError, error:
727
except OSError as error:
477
728
if error.errno != errno.ESRCH: # No such process
478
729
raise
479
730
self.checker = None
480
731
481
732
482
def dbus_service_property(dbus_interface, signature=u"v",
483
access=u"readwrite", byte_arrays=False):
733
def dbus_service_property(dbus_interface, signature="v",
734
access="readwrite", byte_arrays=False):
484
735
"""Decorators for marking methods of a DBusObjectWithProperties to
485
736
become properties on the D-Bus.
486
737
493
744
"""
494
745
# Encoding deeply encoded byte arrays is not supported yet by the
495
746
# "Set" method, so we fail early here:
496
if byte_arrays and signature != u"ay":
497
raise ValueError(u"Byte arrays not supported for non-'ay'"
498
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)
499
750
def decorator(func):
500
751
func._dbus_is_property = True
501
752
func._dbus_interface = dbus_interface
502
753
func._dbus_signature = signature
503
754
func._dbus_access = access
504
755
func._dbus_name = func.__name__
505
if func._dbus_name.endswith(u"_dbus_property"):
756
if func._dbus_name.endswith("_dbus_property"):
506
757
func._dbus_name = func._dbus_name[:-14]
507
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
758
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
508
759
return func
509
760
return decorator
510
761
530
781
531
782
class DBusObjectWithProperties(dbus.service.Object):
532
783
"""A D-Bus object with properties.
533
784
534
785
Classes inheriting from this can use the dbus_service_property
535
786
decorator to expose methods as D-Bus properties. It exposes the
536
787
standard Get(), Set(), and GetAll() methods on the D-Bus.
538
789
539
790
@staticmethod
540
791
def _is_dbus_property(obj):
541
return getattr(obj, u"_dbus_is_property", False)
792
return getattr(obj, "_dbus_is_property", False)
542
793
543
794
def _get_all_dbus_properties(self):
544
795
"""Returns a generator of (name, attribute) pairs
545
796
"""
546
return ((prop._dbus_name, prop)
797
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
798
for cls in self.__class__.__mro__
547
799
for name, prop in
548
inspect.getmembers(self, self._is_dbus_property))
800
inspect.getmembers(cls, self._is_dbus_property))
549
801
550
802
def _get_dbus_property(self, interface_name, property_name):
551
803
"""Returns a bound method if one exists which is a D-Bus
552
804
property with the specified name and interface.
553
805
"""
554
for name in (property_name,
555
property_name + u"_dbus_property"):
556
prop = getattr(self, name, None)
557
if (prop is None
558
or not self._is_dbus_property(prop)
559
or prop._dbus_name != property_name
560
or (interface_name and prop._dbus_interface
561
and interface_name != prop._dbus_interface)):
562
continue
563
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
564
813
# No such property
565
raise DBusPropertyNotFound(self.dbus_object_path + u":"
566
+ interface_name + u"."
814
raise DBusPropertyNotFound(self.dbus_object_path + ":"
815
+ interface_name + "."
567
816
+ property_name)
568
817
569
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
570
out_signature=u"v")
818
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
819
out_signature="v")
571
820
def Get(self, interface_name, property_name):
572
821
"""Standard D-Bus property Get() method, see D-Bus standard.
573
822
"""
574
823
prop = self._get_dbus_property(interface_name, property_name)
575
if prop._dbus_access == u"write":
824
if prop._dbus_access == "write":
576
825
raise DBusPropertyAccessException(property_name)
577
826
value = prop()
578
if not hasattr(value, u"variant_level"):
827
if not hasattr(value, "variant_level"):
579
828
return value
580
829
return type(value)(value, variant_level=value.variant_level+1)
581
830
582
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
831
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
583
832
def Set(self, interface_name, property_name, value):
584
833
"""Standard D-Bus property Set() method, see D-Bus standard.
585
834
"""
586
835
prop = self._get_dbus_property(interface_name, property_name)
587
if prop._dbus_access == u"read":
836
if prop._dbus_access == "read":
588
837
raise DBusPropertyAccessException(property_name)
589
if prop._dbus_get_args_options[u"byte_arrays"]:
838
if prop._dbus_get_args_options["byte_arrays"]:
590
839
# The byte_arrays option is not supported yet on
591
840
# signatures other than "ay".
592
if prop._dbus_signature != u"ay":
841
if prop._dbus_signature != "ay":
593
842
raise ValueError
594
843
value = dbus.ByteArray(''.join(unichr(byte)
595
844
for byte in value))
596
845
prop(value)
597
846
598
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
599
out_signature=u"a{sv}")
847
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
848
out_signature="a{sv}")
600
849
def GetAll(self, interface_name):
601
850
"""Standard D-Bus property GetAll() method, see D-Bus
602
851
standard.
603
852
604
853
Note: Will not include properties with access="write".
605
854
"""
606
all = {}
855
properties = {}
607
856
for name, prop in self._get_all_dbus_properties():
608
857
if (interface_name
609
858
and interface_name != prop._dbus_interface):
610
859
# Interface non-empty but did not match
611
860
continue
612
861
# Ignore write-only properties
613
if prop._dbus_access == u"write":
862
if prop._dbus_access == "write":
614
863
continue
615
864
value = prop()
616
if not hasattr(value, u"variant_level"):
617
all[name] = value
865
if not hasattr(value, "variant_level"):
866
properties[name] = value
618
867
continue
619
all[name] = type(value)(value, variant_level=
620
value.variant_level+1)
621
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")
622
871
623
872
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
624
out_signature=u"s",
873
out_signature="s",
625
874
path_keyword='object_path',
626
875
connection_keyword='connection')
627
876
def Introspect(self, object_path, connection):
632
881
try:
633
882
document = xml.dom.minidom.parseString(xmlstring)
634
883
def make_tag(document, name, prop):
635
e = document.createElement(u"property")
636
e.setAttribute(u"name", name)
637
e.setAttribute(u"type", prop._dbus_signature)
638
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)
639
888
return e
640
for if_tag in document.getElementsByTagName(u"interface"):
889
for if_tag in document.getElementsByTagName("interface"):
641
890
for tag in (make_tag(document, name, prop)
642
891
for name, prop
643
892
in self._get_all_dbus_properties()
644
893
if prop._dbus_interface
645
== if_tag.getAttribute(u"name")):
894
== if_tag.getAttribute("name")):
646
895
if_tag.appendChild(tag)
647
896
# Add the names to the return values for the
648
897
# "org.freedesktop.DBus.Properties" methods
649
if (if_tag.getAttribute(u"name")
650
== u"org.freedesktop.DBus.Properties"):
651
for cn in if_tag.getElementsByTagName(u"method"):
652
if cn.getAttribute(u"name") == u"Get":
653
for arg in cn.getElementsByTagName(u"arg"):
654
if (arg.getAttribute(u"direction")
655
== u"out"):
656
arg.setAttribute(u"name", u"value")
657
elif cn.getAttribute(u"name") == u"GetAll":
658
for arg in cn.getElementsByTagName(u"arg"):
659
if (arg.getAttribute(u"direction")
660
== u"out"):
661
arg.setAttribute(u"name", u"props")
662
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")
663
912
document.unlink()
664
913
except (AttributeError, xml.dom.DOMException,
665
xml.parsers.expat.ExpatError), error:
666
logger.error(u"Failed to override Introspection method",
914
xml.parsers.expat.ExpatError) as error:
915
logger.error("Failed to override Introspection method",
667
916
error)
668
917
return xmlstring
669
918
670
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
671
1026
class ClientDBus(Client, DBusObjectWithProperties):
672
1027
"""A Client class using D-Bus
673
1028
675
1030
dbus_object_path: dbus.ObjectPath
676
1031
bus: dbus.SystemBus()
677
1032
"""
1033
1034
runtime_expansions = (Client.runtime_expansions
1035
+ ("dbus_object_path",))
1036
678
1037
# dbus.service.Object doesn't use super(), so we can't either.
679
1038
680
1039
def __init__(self, bus = None, *args, **kwargs):
681
1040
self.bus = bus
682
1041
Client.__init__(self, *args, **kwargs)
1042
self._approvals_pending = 0
1043
1044
self._approvals_pending = 0
683
1045
# Only now, when this client is initialized, can it show up on
684
1046
# the D-Bus
1047
client_object_name = unicode(self.name).translate(
1048
{ord("."): ord("_"),
1049
ord("-"): ord("_")})
685
1050
self.dbus_object_path = (dbus.ObjectPath
686
(u"/clients/"
687
+ self.name.replace(u".", u"_")))
1051
("/clients/" + client_object_name))
688
1052
DBusObjectWithProperties.__init__(self, self.bus,
689
1053
self.dbus_object_path)
690
691
@staticmethod
692
def _datetime_to_dbus(dt, variant_level=0):
693
"""Convert a UTC datetime.datetime() to a D-Bus type."""
694
return dbus.String(dt.isoformat(),
695
variant_level=variant_level)
696
697
def enable(self):
698
oldstate = getattr(self, u"enabled", False)
699
r = Client.enable(self)
700
if oldstate != self.enabled:
701
# Emit D-Bus signals
702
self.PropertyChanged(dbus.String(u"enabled"),
703
dbus.Boolean(True, variant_level=1))
704
self.PropertyChanged(
705
dbus.String(u"last_enabled"),
706
self._datetime_to_dbus(self.last_enabled,
707
variant_level=1))
708
return r
709
710
def disable(self, quiet = False):
711
oldstate = getattr(self, u"enabled", False)
712
r = Client.disable(self, quiet=quiet)
713
if not quiet and oldstate != self.enabled:
714
# Emit D-Bus signal
715
self.PropertyChanged(dbus.String(u"enabled"),
716
dbus.Boolean(False, variant_level=1))
717
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
718
1121
719
1122
def __del__(self, *args, **kwargs):
720
1123
try:
721
1124
self.remove_from_connection()
722
1125
except LookupError:
723
1126
pass
724
if hasattr(DBusObjectWithProperties, u"__del__"):
1127
if hasattr(DBusObjectWithProperties, "__del__"):
725
1128
DBusObjectWithProperties.__del__(self, *args, **kwargs)
726
1129
Client.__del__(self, *args, **kwargs)
727
1130
729
1132
*args, **kwargs):
730
1133
self.checker_callback_tag = None
731
1134
self.checker = None
732
# Emit D-Bus signal
733
self.PropertyChanged(dbus.String(u"checker_running"),
734
dbus.Boolean(False, variant_level=1))
735
1135
if os.WIFEXITED(condition):
736
1136
exitstatus = os.WEXITSTATUS(condition)
737
1137
# Emit D-Bus signal
747
1147
return Client.checker_callback(self, pid, condition, command,
748
1148
*args, **kwargs)
749
1149
750
def checked_ok(self, *args, **kwargs):
751
r = Client.checked_ok(self, *args, **kwargs)
752
# Emit D-Bus signal
753
self.PropertyChanged(
754
dbus.String(u"last_checked_ok"),
755
(self._datetime_to_dbus(self.last_checked_ok,
756
variant_level=1)))
757
return r
758
759
1150
def start_checker(self, *args, **kwargs):
760
1151
old_checker = self.checker
761
1152
if self.checker is not None:
768
1159
and old_checker_pid != self.checker.pid):
769
1160
# Emit D-Bus signal
770
1161
self.CheckerStarted(self.current_checker_command)
771
self.PropertyChanged(
772
dbus.String(u"checker_running"),
773
dbus.Boolean(True, variant_level=1))
774
return r
775
776
def stop_checker(self, *args, **kwargs):
777
old_checker = getattr(self, u"checker", None)
778
r = Client.stop_checker(self, *args, **kwargs)
779
if (old_checker is not None
780
and getattr(self, u"checker", None) is None):
781
self.PropertyChanged(dbus.String(u"checker_running"),
782
dbus.Boolean(False, variant_level=1))
783
return r
1162
return r
1163
1164
def _reset_approved(self):
1165
self.approved = None
1166
return False
1167
1168
def approve(self, value=True):
1169
self.send_changedstate()
1170
self.approved = value
1171
gobject.timeout_add(timedelta_to_milliseconds
1172
(self.approval_duration),
1173
self._reset_approved)
1174
784
1175
785
1176
## D-Bus methods, signals & properties
786
_interface = u"se.bsnet.fukt.Mandos.Client"
1177
_interface = "se.recompile.Mandos.Client"
787
1178
788
1179
## Signals
789
1180
790
1181
# CheckerCompleted - signal
791
@dbus.service.signal(_interface, signature=u"nxs")
1182
@dbus.service.signal(_interface, signature="nxs")
792
1183
def CheckerCompleted(self, exitcode, waitstatus, command):
793
1184
"D-Bus signal"
794
1185
pass
795
1186
796
1187
# CheckerStarted - signal
797
@dbus.service.signal(_interface, signature=u"s")
1188
@dbus.service.signal(_interface, signature="s")
798
1189
def CheckerStarted(self, command):
799
1190
"D-Bus signal"
800
1191
pass
801
1192
802
1193
# PropertyChanged - signal
803
@dbus.service.signal(_interface, signature=u"sv")
1194
@dbus.service.signal(_interface, signature="sv")
804
1195
def PropertyChanged(self, property, value):
805
1196
"D-Bus signal"
806
1197
pass
808
1199
# GotSecret - signal
809
1200
@dbus.service.signal(_interface)
810
1201
def GotSecret(self):
811
"D-Bus signal"
1202
"""D-Bus signal
1203
Is sent after a successful transfer of secret from the Mandos
1204
server to mandos-client
1205
"""
812
1206
pass
813
1207
814
1208
# Rejected - signal
815
@dbus.service.signal(_interface)
816
def Rejected(self):
817
"D-Bus signal"
1209
@dbus.service.signal(_interface, signature="s")
1210
def Rejected(self, reason):
1211
"D-Bus signal"
1212
pass
1213
1214
# NeedApproval - signal
1215
@dbus.service.signal(_interface, signature="tb")
1216
def NeedApproval(self, timeout, default):
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
"""
818
1226
pass
819
1227
820
1228
## Methods
821
1229
1230
# Approve - method
1231
@dbus.service.method(_interface, in_signature="b")
1232
def Approve(self, value):
1233
self.approve(value)
1234
822
1235
# CheckedOK - method
823
1236
@dbus.service.method(_interface)
824
1237
def CheckedOK(self):
825
return self.checked_ok()
1238
self.checked_ok()
826
1239
827
1240
# Enable - method
828
1241
@dbus.service.method(_interface)
849
1262
850
1263
## Properties
851
1264
852
# name - property
853
@dbus_service_property(_interface, signature=u"s", access=u"read")
854
def name_dbus_property(self):
1265
# ApprovalPending - property
1266
@dbus_service_property(_interface, signature="b", access="read")
1267
def ApprovalPending_dbus_property(self):
1268
return dbus.Boolean(bool(self.approvals_pending))
1269
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):
855
1298
return dbus.String(self.name)
856
1299
857
# fingerprint - property
858
@dbus_service_property(_interface, signature=u"s", access=u"read")
859
def fingerprint_dbus_property(self):
1300
# Fingerprint - property
1301
@dbus_service_property(_interface, signature="s", access="read")
1302
def Fingerprint_dbus_property(self):
860
1303
return dbus.String(self.fingerprint)
861
1304
862
# host - property
863
@dbus_service_property(_interface, signature=u"s",
864
access=u"readwrite")
865
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):
866
1309
if value is None: # get
867
1310
return dbus.String(self.host)
868
self.host = value
869
# Emit D-Bus signal
870
self.PropertyChanged(dbus.String(u"host"),
871
dbus.String(value, variant_level=1))
872
873
# created - property
874
@dbus_service_property(_interface, signature=u"s", access=u"read")
875
def created_dbus_property(self):
876
return dbus.String(self._datetime_to_dbus(self.created))
877
878
# last_enabled - property
879
@dbus_service_property(_interface, signature=u"s", access=u"read")
880
def last_enabled_dbus_property(self):
881
if self.last_enabled is None:
882
return dbus.String(u"")
883
return dbus.String(self._datetime_to_dbus(self.last_enabled))
884
885
# enabled - property
886
@dbus_service_property(_interface, signature=u"b",
887
access=u"readwrite")
888
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):
889
1327
if value is None: # get
890
1328
return dbus.Boolean(self.enabled)
891
1329
if value:
893
1331
else:
894
1332
self.disable()
895
1333
896
# last_checked_ok - property
897
@dbus_service_property(_interface, signature=u"s",
898
access=u"readwrite")
899
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):
900
1338
if value is not None:
901
1339
self.checked_ok()
902
1340
return
903
if self.last_checked_ok is None:
904
return dbus.String(u"")
905
return dbus.String(self._datetime_to_dbus(self
906
.last_checked_ok))
907
908
# timeout - property
909
@dbus_service_property(_interface, signature=u"t",
910
access=u"readwrite")
911
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):
912
1357
if value is None: # get
913
1358
return dbus.UInt64(self.timeout_milliseconds())
914
1359
self.timeout = datetime.timedelta(0, 0, 0, value)
915
# Emit D-Bus signal
916
self.PropertyChanged(dbus.String(u"timeout"),
917
dbus.UInt64(value, variant_level=1))
918
if getattr(self, u"disable_initiator_tag", None) is None:
1360
if getattr(self, "disable_initiator_tag", None) is None:
919
1361
return
920
1362
# Reschedule timeout
921
1363
gobject.source_remove(self.disable_initiator_tag)
922
1364
self.disable_initiator_tag = None
923
time_to_die = (self.
924
_timedelta_to_milliseconds((self
925
.last_checked_ok
926
+ self.timeout)
927
- datetime.datetime
928
.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())
929
1371
if time_to_die <= 0:
930
1372
# The timeout has passed
931
1373
self.disable()
932
1374
else:
1375
self.expires = (datetime.datetime.utcnow()
1376
+ datetime.timedelta(milliseconds =
1377
time_to_die))
933
1378
self.disable_initiator_tag = (gobject.timeout_add
934
1379
(time_to_die, self.disable))
935
1380
936
# interval - property
937
@dbus_service_property(_interface, signature=u"t",
938
access=u"readwrite")
939
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):
940
1393
if value is None: # get
941
1394
return dbus.UInt64(self.interval_milliseconds())
942
1395
self.interval = datetime.timedelta(0, 0, 0, value)
943
# Emit D-Bus signal
944
self.PropertyChanged(dbus.String(u"interval"),
945
dbus.UInt64(value, variant_level=1))
946
if getattr(self, u"checker_initiator_tag", None) is None:
1396
if getattr(self, "checker_initiator_tag", None) is None:
947
1397
return
948
# Reschedule checker run
949
gobject.source_remove(self.checker_initiator_tag)
950
self.checker_initiator_tag = (gobject.timeout_add
951
(value, self.start_checker))
952
self.start_checker() # Start one now, too
953
954
# checker - property
955
@dbus_service_property(_interface, signature=u"s",
956
access=u"readwrite")
957
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):
958
1409
if value is None: # get
959
1410
return dbus.String(self.checker_command)
960
self.checker_command = value
961
# Emit D-Bus signal
962
self.PropertyChanged(dbus.String(u"checker"),
963
dbus.String(self.checker_command,
964
variant_level=1))
1411
self.checker_command = unicode(value)
965
1412
966
# checker_running - property
967
@dbus_service_property(_interface, signature=u"b",
968
access=u"readwrite")
969
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):
970
1417
if value is None: # get
971
1418
return dbus.Boolean(self.checker is not None)
972
1419
if value:
974
1421
else:
975
1422
self.stop_checker()
976
1423
977
# object_path - property
978
@dbus_service_property(_interface, signature=u"o", access=u"read")
979
def object_path_dbus_property(self):
1424
# ObjectPath - property
1425
@dbus_service_property(_interface, signature="o", access="read")
1426
def ObjectPath_dbus_property(self):
980
1427
return self.dbus_object_path # is already a dbus.ObjectPath
981
1428
982
# secret = property
983
@dbus_service_property(_interface, signature=u"ay",
984
access=u"write", byte_arrays=True)
985
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):
986
1433
self.secret = str(value)
987
1434
988
1435
del _interface
989
1436
990
1437
1438
class ProxyClient(object):
1439
def __init__(self, child_pipe, fpr, address):
1440
self._pipe = child_pipe
1441
self._pipe.send(('init', fpr, address))
1442
if not self._pipe.recv():
1443
raise KeyError()
1444
1445
def __getattribute__(self, name):
1446
if name == '_pipe':
1447
return super(ProxyClient, self).__getattribute__(name)
1448
self._pipe.send(('getattr', name))
1449
data = self._pipe.recv()
1450
if data[0] == 'data':
1451
return data[1]
1452
if data[0] == 'function':
1453
def func(*args, **kwargs):
1454
self._pipe.send(('funcall', name, args, kwargs))
1455
return self._pipe.recv()[1]
1456
return func
1457
1458
def __setattr__(self, name, value):
1459
if name == '_pipe':
1460
return super(ProxyClient, self).__setattr__(name, value)
1461
self._pipe.send(('setattr', name, value))
1462
1463
1464
class ClientDBusTransitional(ClientDBus):
1465
__metaclass__ = AlternateDBusNamesMetaclass
1466
1467
991
1468
class ClientHandler(socketserver.BaseRequestHandler, object):
992
1469
"""A class to handle client connections.
993
1470
995
1472
Note: This will run in its own forked process."""
996
1473
997
1474
def handle(self):
998
logger.info(u"TCP connection from: %s",
999
unicode(self.client_address))
1000
logger.debug(u"IPC Pipe FD: %d",
1001
self.server.child_pipe[1].fileno())
1002
# Open IPC pipe to parent process
1003
with contextlib.nested(self.server.child_pipe[1],
1004
self.server.parent_pipe[0]
1005
) as (ipc, ipc_return):
1475
with contextlib.closing(self.server.child_pipe) as child_pipe:
1476
logger.info("TCP connection from: %s",
1477
unicode(self.client_address))
1478
logger.debug("Pipe FD: %d",
1479
self.server.child_pipe.fileno())
1480
1006
1481
session = (gnutls.connection
1007
1482
.ClientSession(self.request,
1008
1483
gnutls.connection
1013
1488
# no X.509 keys are added to it. Therefore, we can use it
1014
1489
# here despite using OpenPGP certificates.
1015
1490
1016
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1017
# u"+AES-256-CBC", u"+SHA1",
1018
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1019
# u"+DHE-DSS"))
1491
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1492
# "+AES-256-CBC", "+SHA1",
1493
# "+COMP-NULL", "+CTYPE-OPENPGP",
1494
# "+DHE-DSS"))
1020
1495
# Use a fallback default, since this MUST be set.
1021
1496
priority = self.server.gnutls_priority
1022
1497
if priority is None:
1023
priority = u"NORMAL"
1498
priority = "NORMAL"
1024
1499
(gnutls.library.functions
1025
1500
.gnutls_priority_set_direct(session._c_object,
1026
1501
priority, None))
1028
1503
# Start communication using the Mandos protocol
1029
1504
# Get protocol number
1030
1505
line = self.request.makefile().readline()
1031
logger.debug(u"Protocol version: %r", line)
1506
logger.debug("Protocol version: %r", line)
1032
1507
try:
1033
1508
if int(line.strip().split()[0]) > 1:
1034
1509
raise RuntimeError
1035
except (ValueError, IndexError, RuntimeError), error:
1036
logger.error(u"Unknown protocol version: %s", error)
1510
except (ValueError, IndexError, RuntimeError) as error:
1511
logger.error("Unknown protocol version: %s", error)
1037
1512
return
1038
1513
1039
1514
# Start GnuTLS connection
1040
1515
try:
1041
1516
session.handshake()
1042
except gnutls.errors.GNUTLSError, error:
1043
logger.warning(u"Handshake failed: %s", error)
1517
except gnutls.errors.GNUTLSError as error:
1518
logger.warning("Handshake failed: %s", error)
1044
1519
# Do not run session.bye() here: the session is not
1045
1520
# established. Just abandon the request.
1046
1521
return
1047
logger.debug(u"Handshake succeeded")
1522
logger.debug("Handshake succeeded")
1523
1524
approval_required = False
1048
1525
try:
1049
1526
try:
1050
1527
fpr = self.fingerprint(self.peer_certificate
1051
1528
(session))
1052
except (TypeError, gnutls.errors.GNUTLSError), error:
1053
logger.warning(u"Bad certificate: %s", error)
1054
return
1055
logger.debug(u"Fingerprint: %s", fpr)
1056
1057
for c in self.server.clients:
1058
if c.fingerprint == fpr:
1059
client = c
1529
except (TypeError,
1530
gnutls.errors.GNUTLSError) as error:
1531
logger.warning("Bad certificate: %s", error)
1532
return
1533
logger.debug("Fingerprint: %s", fpr)
1534
1535
try:
1536
client = ProxyClient(child_pipe, fpr,
1537
self.client_address)
1538
except KeyError:
1539
return
1540
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
1547
client.approvals_pending += 1
1548
approval_required = True
1549
1550
while True:
1551
if not client.enabled:
1552
logger.info("Client %s is disabled",
1553
client.name)
1554
if self.server.use_dbus:
1555
# Emit D-Bus signal
1556
client.Rejected("Disabled")
1557
return
1558
1559
if client.approved or not client.approval_delay:
1560
#We are approved or approval is disabled
1060
1561
break
1061
else:
1062
ipc.write(u"NOTFOUND %s %s\n"
1063
% (fpr, unicode(self.client_address)))
1064
return
1065
1066
class ClientProxy(object):
1067
"""Client proxy object. Not for calling methods."""
1068
def __init__(self, client):
1069
self.client = client
1070
def __getattr__(self, name):
1071
if name.startswith("ipc_"):
1072
def tempfunc():
1073
ipc.write("%s %s\n" % (name[4:].upper(),
1074
self.client.name))
1075
return tempfunc
1076
if not hasattr(self.client, name):
1077
raise AttributeError
1078
ipc.write(u"GETATTR %s %s\n"
1079
% (name, self.client.fingerprint))
1080
return pickle.load(ipc_return)
1081
clientproxy = ClientProxy(client)
1082
# Have to check if client.enabled, since it is
1083
# possible that the client was disabled since the
1084
# GnuTLS session was established.
1085
if not clientproxy.enabled:
1086
clientproxy.ipc_disabled()
1087
return
1088
1089
clientproxy.ipc_sending()
1562
elif client.approved is None:
1563
logger.info("Client %s needs approval",
1564
client.name)
1565
if self.server.use_dbus:
1566
# Emit D-Bus signal
1567
client.NeedApproval(
1568
client.approval_delay_milliseconds(),
1569
client.approved_by_default)
1570
else:
1571
logger.warning("Client %s was not approved",
1572
client.name)
1573
if self.server.use_dbus:
1574
# Emit D-Bus signal
1575
client.Rejected("Denied")
1576
return
1577
1578
#wait until timeout or approved
1579
time = datetime.datetime.now()
1580
client.changedstate.acquire()
1581
(client.changedstate.wait
1582
(float(client.timedelta_to_milliseconds(delay)
1583
/ 1000)))
1584
client.changedstate.release()
1585
time2 = datetime.datetime.now()
1586
if (time2 - time) >= delay:
1587
if not client.approved_by_default:
1588
logger.warning("Client %s timed out while"
1589
" waiting for approval",
1590
client.name)
1591
if self.server.use_dbus:
1592
# Emit D-Bus signal
1593
client.Rejected("Approval timed out")
1594
return
1595
else:
1596
break
1597
else:
1598
delay -= time2 - time
1599
1090
1600
sent_size = 0
1091
1601
while sent_size < len(client.secret):
1092
sent = session.send(client.secret[sent_size:])
1093
logger.debug(u"Sent: %d, remaining: %d",
1602
try:
1603
sent = session.send(client.secret[sent_size:])
1604
except gnutls.errors.GNUTLSError as error:
1605
logger.warning("gnutls send failed")
1606
return
1607
logger.debug("Sent: %d, remaining: %d",
1094
1608
sent, len(client.secret)
1095
1609
- (sent_size + sent))
1096
1610
sent_size += sent
1611
1612
logger.info("Sending secret to %s", client.name)
1613
# bump the timeout using extended_timeout
1614
client.checked_ok(client.extended_timeout)
1615
if self.server.use_dbus:
1616
# Emit D-Bus signal
1617
client.GotSecret()
1618
1097
1619
finally:
1098
session.bye()
1620
if approval_required:
1621
client.approvals_pending -= 1
1622
try:
1623
session.bye()
1624
except gnutls.errors.GNUTLSError as error:
1625
logger.warning("GnuTLS bye failed")
1099
1626
1100
1627
@staticmethod
1101
1628
def peer_certificate(session):
1111
1638
.gnutls_certificate_get_peers
1112
1639
(session._c_object, ctypes.byref(list_size)))
1113
1640
if not bool(cert_list) and list_size.value != 0:
1114
raise gnutls.errors.GNUTLSError(u"error getting peer"
1115
u" certificate")
1641
raise gnutls.errors.GNUTLSError("error getting peer"
1642
" certificate")
1116
1643
if list_size.value == 0:
1117
1644
return None
1118
1645
cert = cert_list[0]
1144
1671
if crtverify.value != 0:
1145
1672
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1146
1673
raise (gnutls.errors.CertificateSecurityError
1147
(u"Verify failed"))
1674
("Verify failed"))
1148
1675
# New buffer for the fingerprint
1149
1676
buf = ctypes.create_string_buffer(20)
1150
1677
buf_len = ctypes.c_size_t()
1157
1684
# Convert the buffer to a Python bytestring
1158
1685
fpr = ctypes.string_at(buf, buf_len.value)
1159
1686
# Convert the bytestring to hexadecimal notation
1160
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1687
hex_fpr = binascii.hexlify(fpr).upper()
1161
1688
return hex_fpr
1162
1689
1163
1690
1164
class ForkingMixInWithPipes(socketserver.ForkingMixIn, object):
1165
"""Like socketserver.ForkingMixIn, but also pass a pipe pair."""
1691
class MultiprocessingMixIn(object):
1692
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1693
def sub_process_main(self, request, address):
1694
try:
1695
self.finish_request(request, address)
1696
except Exception:
1697
self.handle_error(request, address)
1698
self.close_request(request)
1699
1700
def process_request(self, request, address):
1701
"""Start a new process to process the request."""
1702
proc = multiprocessing.Process(target = self.sub_process_main,
1703
args = (request,
1704
address))
1705
proc.start()
1706
return proc
1707
1708
1709
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1710
""" adds a pipe to the MixIn """
1166
1711
def process_request(self, request, client_address):
1167
1712
"""Overrides and wraps the original process_request().
1168
1713
1169
1714
This function creates a new pipe in self.pipe
1170
1715
"""
1171
# Child writes to child_pipe
1172
self.child_pipe = map(os.fdopen, os.pipe(), u"rw", (1, 0))
1173
# Parent writes to parent_pipe
1174
self.parent_pipe = map(os.fdopen, os.pipe(), u"rw", (1, 0))
1175
super(ForkingMixInWithPipes,
1176
self).process_request(request, client_address)
1177
# Close unused ends for parent
1178
self.parent_pipe[0].close() # close read end
1179
self.child_pipe[1].close() # close write end
1180
self.add_pipe_fds(self.child_pipe[0], self.parent_pipe[1])
1181
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
1716
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1717
1718
proc = MultiprocessingMixIn.process_request(self, request,
1719
client_address)
1720
self.child_pipe.close()
1721
self.add_pipe(parent_pipe, proc)
1722
1723
def add_pipe(self, parent_pipe, proc):
1182
1724
"""Dummy function; override as necessary"""
1183
child_pipe_fd.close()
1184
parent_pipe_fd.close()
1185
1186
1187
class IPv6_TCPServer(ForkingMixInWithPipes,
1725
raise NotImplementedError
1726
1727
1728
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1188
1729
socketserver.TCPServer, object):
1189
1730
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1190
1731
1206
1747
bind to an address or port if they were not specified."""
1207
1748
if self.interface is not None:
1208
1749
if SO_BINDTODEVICE is None:
1209
logger.error(u"SO_BINDTODEVICE does not exist;"
1210
u" cannot bind to interface %s",
1750
logger.error("SO_BINDTODEVICE does not exist;"
1751
" cannot bind to interface %s",
1211
1752
self.interface)
1212
1753
else:
1213
1754
try:
1214
1755
self.socket.setsockopt(socket.SOL_SOCKET,
1215
1756
SO_BINDTODEVICE,
1216
1757
str(self.interface
1217
+ u'\0'))
1218
except socket.error, error:
1758
+ '\0'))
1759
except socket.error as error:
1219
1760
if error[0] == errno.EPERM:
1220
logger.error(u"No permission to"
1221
u" bind to interface %s",
1761
logger.error("No permission to"
1762
" bind to interface %s",
1222
1763
self.interface)
1223
1764
elif error[0] == errno.ENOPROTOOPT:
1224
logger.error(u"SO_BINDTODEVICE not available;"
1225
u" cannot bind to interface %s",
1765
logger.error("SO_BINDTODEVICE not available;"
1766
" cannot bind to interface %s",
1226
1767
self.interface)
1227
1768
else:
1228
1769
raise
1230
1771
if self.server_address[0] or self.server_address[1]:
1231
1772
if not self.server_address[0]:
1232
1773
if self.address_family == socket.AF_INET6:
1233
any_address = u"::" # in6addr_any
1774
any_address = "::" # in6addr_any
1234
1775
else:
1235
1776
any_address = socket.INADDR_ANY
1236
1777
self.server_address = (any_address,
1263
1804
self.enabled = False
1264
1805
self.clients = clients
1265
1806
if self.clients is None:
1266
self.clients = set()
1807
self.clients = {}
1267
1808
self.use_dbus = use_dbus
1268
1809
self.gnutls_priority = gnutls_priority
1269
1810
IPv6_TCPServer.__init__(self, server_address,
1273
1814
def server_activate(self):
1274
1815
if self.enabled:
1275
1816
return socketserver.TCPServer.server_activate(self)
1817
1276
1818
def enable(self):
1277
1819
self.enabled = True
1278
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
1820
1821
def add_pipe(self, parent_pipe, proc):
1279
1822
# Call "handle_ipc" for both data and EOF events
1280
gobject.io_add_watch(child_pipe_fd.fileno(),
1823
gobject.io_add_watch(parent_pipe.fileno(),
1281
1824
gobject.IO_IN | gobject.IO_HUP,
1282
1825
functools.partial(self.handle_ipc,
1283
reply = parent_pipe_fd,
1284
sender= child_pipe_fd))
1285
def handle_ipc(self, source, condition, reply=None, sender=None):
1826
parent_pipe =
1827
parent_pipe,
1828
proc = proc))
1829
1830
def handle_ipc(self, source, condition, parent_pipe=None,
1831
proc = None, client_object=None):
1286
1832
condition_names = {
1287
gobject.IO_IN: u"IN", # There is data to read.
1288
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
1289
1835
# blocking).
1290
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1291
gobject.IO_ERR: u"ERR", # Error condition.
1292
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
1293
1839
# broken, usually for pipes and
1294
1840
# sockets).
1295
1841
}
1297
1843
for cond, name in
1298
1844
condition_names.iteritems()
1299
1845
if cond & condition)
1300
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1301
conditions_string)
1302
1303
# Read a line from the file object
1304
cmdline = sender.readline()
1305
if not cmdline: # Empty line means end of file
1306
# close the IPC pipes
1307
sender.close()
1308
reply.close()
1309
1310
# Stop calling this function
1311
return False
1312
1313
logger.debug(u"IPC command: %r", cmdline)
1314
1315
# Parse and act on command
1316
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1317
1318
if cmd == u"NOTFOUND":
1319
fpr, address = args.split(None, 1)
1320
logger.warning(u"Client not found for fingerprint: %s, ad"
1321
u"dress: %s", fpr, address)
1322
if self.use_dbus:
1323
# Emit D-Bus signal
1324
mandos_dbus_service.ClientNotFound(fpr, address)
1325
elif cmd == u"DISABLED":
1326
for client in self.clients:
1327
if client.name == args:
1328
logger.warning(u"Client %s is disabled", args)
1329
if self.use_dbus:
1330
# Emit D-Bus signal
1331
client.Rejected()
1332
break
1333
else:
1334
logger.error(u"Unknown client %s is disabled", args)
1335
elif cmd == u"SENDING":
1336
for client in self.clients:
1337
if client.name == args:
1338
logger.info(u"Sending secret to %s", client.name)
1339
client.checked_ok()
1340
if self.use_dbus:
1341
# Emit D-Bus signal
1342
client.GotSecret()
1343
break
1344
else:
1345
logger.error(u"Sending secret to unknown client %s",
1346
args)
1347
elif cmd == u"GETATTR":
1348
attr_name, fpr = args.split(None, 1)
1349
for client in self.clients:
1350
if client.fingerprint == fpr:
1351
attr_value = getattr(client, attr_name, None)
1352
logger.debug("IPC reply: %r", attr_value)
1353
pickle.dump(attr_value, reply)
1354
break
1355
else:
1356
logger.error(u"Client %s on address %s requesting "
1357
u"attribute %s not found", fpr, address,
1358
attr_name)
1359
pickle.dump(None, reply)
1360
else:
1361
logger.error(u"Unknown IPC command: %r", cmdline)
1362
1363
# Keep calling this function
1846
# error, or the other end of multiprocessing.Pipe has closed
1847
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1848
# Wait for other process to exit
1849
proc.join()
1850
return False
1851
1852
# Read a request from the child
1853
request = parent_pipe.recv()
1854
command = request[0]
1855
1856
if command == 'init':
1857
fpr = request[1]
1858
address = request[2]
1859
1860
for c in self.clients.itervalues():
1861
if c.fingerprint == fpr:
1862
client = c
1863
break
1864
else:
1865
logger.info("Client not found for fingerprint: %s, ad"
1866
"dress: %s", fpr, address)
1867
if self.use_dbus:
1868
# Emit D-Bus signal
1869
mandos_dbus_service.ClientNotFound(fpr,
1870
address[0])
1871
parent_pipe.send(False)
1872
return False
1873
1874
gobject.io_add_watch(parent_pipe.fileno(),
1875
gobject.IO_IN | gobject.IO_HUP,
1876
functools.partial(self.handle_ipc,
1877
parent_pipe =
1878
parent_pipe,
1879
proc = proc,
1880
client_object =
1881
client))
1882
parent_pipe.send(True)
1883
# remove the old hook in favor of the new above hook on
1884
# same fileno
1885
return False
1886
if command == 'funcall':
1887
funcname = request[1]
1888
args = request[2]
1889
kwargs = request[3]
1890
1891
parent_pipe.send(('data', getattr(client_object,
1892
funcname)(*args,
1893
**kwargs)))
1894
1895
if command == 'getattr':
1896
attrname = request[1]
1897
if callable(client_object.__getattribute__(attrname)):
1898
parent_pipe.send(('function',))
1899
else:
1900
parent_pipe.send(('data', client_object
1901
.__getattribute__(attrname)))
1902
1903
if command == 'setattr':
1904
attrname = request[1]
1905
value = request[2]
1906
setattr(client_object, attrname, value)
1907
1364
1908
return True
1365
1909
1366
1910
1367
1911
def string_to_delta(interval):
1368
1912
"""Parse a string and return a datetime.timedelta
1369
1913
1370
>>> string_to_delta(u'7d')
1914
>>> string_to_delta('7d')
1371
1915
datetime.timedelta(7)
1372
>>> string_to_delta(u'60s')
1916
>>> string_to_delta('60s')
1373
1917
datetime.timedelta(0, 60)
1374
>>> string_to_delta(u'60m')
1918
>>> string_to_delta('60m')
1375
1919
datetime.timedelta(0, 3600)
1376
>>> string_to_delta(u'24h')
1920
>>> string_to_delta('24h')
1377
1921
datetime.timedelta(1)
1378
>>> string_to_delta(u'1w')
1922
>>> string_to_delta('1w')
1379
1923
datetime.timedelta(7)
1380
>>> string_to_delta(u'5m 30s')
1924
>>> string_to_delta('5m 30s')
1381
1925
datetime.timedelta(0, 330)
1382
1926
"""
1383
1927
timevalue = datetime.timedelta(0)
1385
1929
try:
1386
1930
suffix = unicode(s[-1])
1387
1931
value = int(s[:-1])
1388
if suffix == u"d":
1932
if suffix == "d":
1389
1933
delta = datetime.timedelta(value)
1390
elif suffix == u"s":
1934
elif suffix == "s":
1391
1935
delta = datetime.timedelta(0, value)
1392
elif suffix == u"m":
1936
elif suffix == "m":
1393
1937
delta = datetime.timedelta(0, 0, 0, 0, value)
1394
elif suffix == u"h":
1938
elif suffix == "h":
1395
1939
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1396
elif suffix == u"w":
1940
elif suffix == "w":
1397
1941
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1398
1942
else:
1399
raise ValueError(u"Unknown suffix %r" % suffix)
1400
except (ValueError, IndexError), e:
1401
raise ValueError(e.message)
1943
raise ValueError("Unknown suffix %r" % suffix)
1944
except (ValueError, IndexError) as e:
1945
raise ValueError(*(e.args))
1402
1946
timevalue += delta
1403
1947
return timevalue
1404
1948
1405
1949
1406
def if_nametoindex(interface):
1407
"""Call the C function if_nametoindex(), or equivalent
1408
1409
Note: This function cannot accept a unicode string."""
1410
global if_nametoindex
1411
try:
1412
if_nametoindex = (ctypes.cdll.LoadLibrary
1413
(ctypes.util.find_library(u"c"))
1414
.if_nametoindex)
1415
except (OSError, AttributeError):
1416
logger.warning(u"Doing if_nametoindex the hard way")
1417
def if_nametoindex(interface):
1418
"Get an interface index the hard way, i.e. using fcntl()"
1419
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1420
with contextlib.closing(socket.socket()) as s:
1421
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1422
struct.pack(str(u"16s16x"),
1423
interface))
1424
interface_index = struct.unpack(str(u"I"),
1425
ifreq[16:20])[0]
1426
return interface_index
1427
return if_nametoindex(interface)
1428
1429
1430
1950
def daemon(nochdir = False, noclose = False):
1431
1951
"""See daemon(3). Standard BSD Unix function.
1432
1952
1435
1955
sys.exit()
1436
1956
os.setsid()
1437
1957
if not nochdir:
1438
os.chdir(u"/")
1958
os.chdir("/")
1439
1959
if os.fork():
1440
1960
sys.exit()
1441
1961
if not noclose:
1443
1963
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1444
1964
if not stat.S_ISCHR(os.fstat(null).st_mode):
1445
1965
raise OSError(errno.ENODEV,
1446
u"%s not a character device"
1966
"%s not a character device"
1447
1967
% os.path.devnull)
1448
1968
os.dup2(null, sys.stdin.fileno())
1449
1969
os.dup2(null, sys.stdout.fileno())
1457
1977
##################################################################
1458
1978
# Parsing of options, both command line and config file
1459
1979
1460
parser = optparse.OptionParser(version = "%%prog %s" % version)
1461
parser.add_option("-i", u"--interface", type=u"string",
1462
metavar="IF", help=u"Bind to interface IF")
1463
parser.add_option("-a", u"--address", type=u"string",
1464
help=u"Address to listen for requests on")
1465
parser.add_option("-p", u"--port", type=u"int",
1466
help=u"Port number to receive requests on")
1467
parser.add_option("--check", action=u"store_true",
1468
help=u"Run self-test")
1469
parser.add_option("--debug", action=u"store_true",
1470
help=u"Debug mode; run in foreground and log to"
1471
u" terminal")
1472
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1473
u" priority string (see GnuTLS documentation)")
1474
parser.add_option("--servicename", type=u"string",
1475
metavar=u"NAME", help=u"Zeroconf service name")
1476
parser.add_option("--configdir", type=u"string",
1477
default=u"/etc/mandos", metavar=u"DIR",
1478
help=u"Directory to search for configuration"
1479
u" files")
1480
parser.add_option("--no-dbus", action=u"store_false",
1481
dest=u"use_dbus", help=u"Do not provide D-Bus"
1482
u" system bus interface")
1483
parser.add_option("--no-ipv6", action=u"store_false",
1484
dest=u"use_ipv6", help=u"Do not use IPv6")
1485
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()
1486
2017
1487
2018
if options.check:
1488
2019
import doctest
1490
2021
sys.exit()
1491
2022
1492
2023
# Default values for config file for server-global settings
1493
server_defaults = { u"interface": u"",
1494
u"address": u"",
1495
u"port": u"",
1496
u"debug": u"False",
1497
u"priority":
1498
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1499
u"servicename": u"Mandos",
1500
u"use_dbus": u"True",
1501
u"use_ipv6": u"True",
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"
1502
2036
}
1503
2037
1504
2038
# Parse config file for server-global settings
1505
2039
server_config = configparser.SafeConfigParser(server_defaults)
1506
2040
del server_defaults
1507
2041
server_config.read(os.path.join(options.configdir,
1508
u"mandos.conf"))
2042
"mandos.conf"))
1509
2043
# Convert the SafeConfigParser object to a dict
1510
2044
server_settings = server_config.defaults()
1511
2045
# Use the appropriate methods on the non-string config options
1512
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1513
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",
1514
2048
option)
1515
2049
if server_settings["port"]:
1516
server_settings["port"] = server_config.getint(u"DEFAULT",
1517
u"port")
2050
server_settings["port"] = server_config.getint("DEFAULT",
2051
"port")
1518
2052
del server_config
1519
2053
1520
2054
# Override the settings from the config file with command line
1521
2055
# options, if set.
1522
for option in (u"interface", u"address", u"port", u"debug",
1523
u"priority", u"servicename", u"configdir",
1524
u"use_dbus", u"use_ipv6"):
2056
for option in ("interface", "address", "port", "debug",
2057
"priority", "servicename", "configdir",
2058
"use_dbus", "use_ipv6", "debuglevel", "restore",
2059
"statedir"):
1525
2060
value = getattr(options, option)
1526
2061
if value is not None:
1527
2062
server_settings[option] = value
1535
2070
##################################################################
1536
2071
1537
2072
# For convenience
1538
debug = server_settings[u"debug"]
1539
use_dbus = server_settings[u"use_dbus"]
1540
use_ipv6 = server_settings[u"use_ipv6"]
1541
1542
if not debug:
1543
syslogger.setLevel(logging.WARNING)
1544
console.setLevel(logging.WARNING)
1545
1546
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":
1547
2090
syslogger.setFormatter(logging.Formatter
1548
(u'Mandos (%s) [%%(process)d]:'
1549
u' %%(levelname)s: %%(message)s'
1550
% server_settings[u"servicename"]))
2091
('Mandos (%s) [%%(process)d]:'
2092
' %%(levelname)s: %%(message)s'
2093
% server_settings["servicename"]))
1551
2094
1552
2095
# Parse config file with clients
1553
client_defaults = { u"timeout": u"1h",
1554
u"interval": u"5m",
1555
u"checker": u"fping -q -- %%(host)s",
1556
u"host": u"",
1557
}
1558
client_config = configparser.SafeConfigParser(client_defaults)
1559
client_config.read(os.path.join(server_settings[u"configdir"],
1560
u"clients.conf"))
2096
client_config = configparser.SafeConfigParser(Client.client_defaults)
2097
client_config.read(os.path.join(server_settings["configdir"],
2098
"clients.conf"))
1561
2099
1562
2100
global mandos_dbus_service
1563
2101
mandos_dbus_service = None
1564
2102
1565
tcp_server = MandosServer((server_settings[u"address"],
1566
server_settings[u"port"]),
2103
tcp_server = MandosServer((server_settings["address"],
2104
server_settings["port"]),
1567
2105
ClientHandler,
1568
interface=(server_settings[u"interface"]
2106
interface=(server_settings["interface"]
1569
2107
or None),
1570
2108
use_ipv6=use_ipv6,
1571
2109
gnutls_priority=
1572
server_settings[u"priority"],
2110
server_settings["priority"],
1573
2111
use_dbus=use_dbus)
1574
pidfilename = u"/var/run/mandos.pid"
1575
try:
1576
pidfile = open(pidfilename, u"w")
1577
except IOError:
1578
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)
1579
2118
1580
2119
try:
1581
uid = pwd.getpwnam(u"_mandos").pw_uid
1582
gid = pwd.getpwnam(u"_mandos").pw_gid
2120
uid = pwd.getpwnam("_mandos").pw_uid
2121
gid = pwd.getpwnam("_mandos").pw_gid
1583
2122
except KeyError:
1584
2123
try:
1585
uid = pwd.getpwnam(u"mandos").pw_uid
1586
gid = pwd.getpwnam(u"mandos").pw_gid
2124
uid = pwd.getpwnam("mandos").pw_uid
2125
gid = pwd.getpwnam("mandos").pw_gid
1587
2126
except KeyError:
1588
2127
try:
1589
uid = pwd.getpwnam(u"nobody").pw_uid
1590
gid = pwd.getpwnam(u"nobody").pw_gid
2128
uid = pwd.getpwnam("nobody").pw_uid
2129
gid = pwd.getpwnam("nobody").pw_gid
1591
2130
except KeyError:
1592
2131
uid = 65534
1593
2132
gid = 65534
1594
2133
try:
1595
2134
os.setgid(gid)
1596
2135
os.setuid(uid)
1597
except OSError, error:
2136
except OSError as error:
1598
2137
if error[0] != errno.EPERM:
1599
2138
raise error
1600
2139
1601
# Enable all possible GnuTLS debugging
1602
2140
if debug:
2141
# Enable all possible GnuTLS debugging
2142
1603
2143
# "Use a log level over 10 to enable all debugging options."
1604
2144
# - GnuTLS manual
1605
2145
gnutls.library.functions.gnutls_global_set_log_level(11)
1606
2146
1607
2147
@gnutls.library.types.gnutls_log_func
1608
2148
def debug_gnutls(level, string):
1609
logger.debug(u"GnuTLS: %s", string[:-1])
2149
logger.debug("GnuTLS: %s", string[:-1])
1610
2150
1611
2151
(gnutls.library.functions
1612
2152
.gnutls_global_set_log_function(debug_gnutls))
2153
2154
# Redirect stdin so all checkers get /dev/null
2155
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2156
os.dup2(null, sys.stdin.fileno())
2157
if null > 2:
2158
os.close(null)
2159
else:
2160
# No console logging
2161
logger.removeHandler(console)
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()
1613
2167
1614
2168
global main_loop
1615
2169
# From the Avahi example code
1619
2173
# End of Avahi example code
1620
2174
if use_dbus:
1621
2175
try:
1622
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2176
bus_name = dbus.service.BusName("se.recompile.Mandos",
1623
2177
bus, do_not_queue=True)
1624
except dbus.exceptions.NameExistsException, e:
1625
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")
1626
2183
use_dbus = False
1627
server_settings[u"use_dbus"] = False
2184
server_settings["use_dbus"] = False
1628
2185
tcp_server.use_dbus = False
1629
2186
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1630
service = AvahiService(name = server_settings[u"servicename"],
1631
servicetype = u"_mandos._tcp",
1632
protocol = protocol, bus = bus)
2187
service = AvahiServiceToSyslog(name =
2188
server_settings["servicename"],
2189
servicetype = "_mandos._tcp",
2190
protocol = protocol, bus = bus)
1633
2191
if server_settings["interface"]:
1634
2192
service.interface = (if_nametoindex
1635
(str(server_settings[u"interface"])))
2193
(str(server_settings["interface"])))
2194
2195
global multiprocessing_manager
2196
multiprocessing_manager = multiprocessing.Manager()
1636
2197
1637
2198
client_class = Client
1638
2199
if use_dbus:
1639
client_class = functools.partial(ClientDBus, bus = bus)
1640
tcp_server.clients.update(set(
1641
client_class(name = section,
1642
config= dict(client_config.items(section)))
1643
for section in client_config.sections()))
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
2263
try:
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
1644
2287
if not tcp_server.clients:
1645
logger.warning(u"No clients defined")
1646
1647
if debug:
1648
# Redirect stdin so all checkers get /dev/null
1649
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1650
os.dup2(null, sys.stdin.fileno())
1651
if null > 2:
1652
os.close(null)
1653
else:
1654
# No console logging
1655
logger.removeHandler(console)
1656
# Close all input and output, do double fork, etc.
1657
daemon()
1658
1659
try:
1660
with pidfile:
1661
pid = os.getpid()
1662
pidfile.write(str(pid) + "\n")
1663
del pidfile
1664
except IOError:
1665
logger.error(u"Could not write to file %r with PID %d",
1666
pidfilename, pid)
1667
except NameError:
1668
# "pidfile" was never created
1669
pass
1670
del pidfilename
1671
2288
logger.warning("No clients defined")
2289
1672
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
1673
2303
signal.signal(signal.SIGINT, signal.SIG_IGN)
2304
1674
2305
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1675
2306
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1676
2307
1678
2309
class MandosDBusService(dbus.service.Object):
1679
2310
"""A D-Bus proxy object"""
1680
2311
def __init__(self):
1681
dbus.service.Object.__init__(self, bus, u"/")
1682
_interface = u"se.bsnet.fukt.Mandos"
2312
dbus.service.Object.__init__(self, bus, "/")
2313
_interface = "se.recompile.Mandos"
1683
2314
1684
@dbus.service.signal(_interface, signature=u"o")
2315
@dbus.service.signal(_interface, signature="o")
1685
2316
def ClientAdded(self, objpath):
1686
2317
"D-Bus signal"
1687
2318
pass
1688
2319
1689
@dbus.service.signal(_interface, signature=u"ss")
2320
@dbus.service.signal(_interface, signature="ss")
1690
2321
def ClientNotFound(self, fingerprint, address):
1691
2322
"D-Bus signal"
1692
2323
pass
1693
2324
1694
@dbus.service.signal(_interface, signature=u"os")
2325
@dbus.service.signal(_interface, signature="os")
1695
2326
def ClientRemoved(self, objpath, name):
1696
2327
"D-Bus signal"
1697
2328
pass
1698
2329
1699
@dbus.service.method(_interface, out_signature=u"ao")
2330
@dbus.service.method(_interface, out_signature="ao")
1700
2331
def GetAllClients(self):
1701
2332
"D-Bus method"
1702
2333
return dbus.Array(c.dbus_object_path
1703
for c in tcp_server.clients)
2334
for c in
2335
tcp_server.clients.itervalues())
1704
2336
1705
2337
@dbus.service.method(_interface,
1706
out_signature=u"a{oa{sv}}")
2338
out_signature="a{oa{sv}}")
1707
2339
def GetAllClientsWithProperties(self):
1708
2340
"D-Bus method"
1709
2341
return dbus.Dictionary(
1710
((c.dbus_object_path, c.GetAll(u""))
1711
for c in tcp_server.clients),
1712
signature=u"oa{sv}")
2342
((c.dbus_object_path, c.GetAll(""))
2343
for c in tcp_server.clients.itervalues()),
2344
signature="oa{sv}")
1713
2345
1714
@dbus.service.method(_interface, in_signature=u"o")
2346
@dbus.service.method(_interface, in_signature="o")
1715
2347
def RemoveClient(self, object_path):
1716
2348
"D-Bus method"
1717
for c in tcp_server.clients:
2349
for c in tcp_server.clients.itervalues():
1718
2350
if c.dbus_object_path == object_path:
1719
tcp_server.clients.remove(c)
2351
del tcp_server.clients[c.name]
1720
2352
c.remove_from_connection()
1721
2353
# Don't signal anything except ClientRemoved
1722
2354
c.disable(quiet=True)
1727
2359
1728
2360
del _interface
1729
2361
1730
mandos_dbus_service = MandosDBusService()
2362
class MandosDBusServiceTransitional(MandosDBusService):
2363
__metaclass__ = AlternateDBusNamesMetaclass
2364
mandos_dbus_service = MandosDBusServiceTransitional()
1731
2365
1732
2366
def cleanup():
1733
2367
"Cleanup function; run on exit"
1734
2368
service.cleanup()
1735
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
1736
2414
while tcp_server.clients:
1737
client = tcp_server.clients.pop()
2415
name, client = tcp_server.clients.popitem()
1738
2416
if use_dbus:
1739
2417
client.remove_from_connection()
1740
client.disable_hook = None
1741
2418
# Don't signal anything except ClientRemoved
1742
2419
client.disable(quiet=True)
1743
2420
if use_dbus:
1744
2421
# Emit D-Bus signal
1745
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2422
mandos_dbus_service.ClientRemoved(client
2423
.dbus_object_path,
1746
2424
client.name)
2425
client_settings.clear()
1747
2426
1748
2427
atexit.register(cleanup)
1749
2428
1750
for client in tcp_server.clients:
2429
for client in tcp_server.clients.itervalues():
1751
2430
if use_dbus:
1752
2431
# Emit D-Bus signal
1753
2432
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1754
client.enable()
2433
# Need to initiate checking of clients
2434
if client.enabled:
2435
client.init_checker()
1755
2436
1756
2437
tcp_server.enable()
1757
2438
tcp_server.server_activate()
1759
2440
# Find out what port we got
1760
2441
service.port = tcp_server.socket.getsockname()[1]
1761
2442
if use_ipv6:
1762
logger.info(u"Now listening on address %r, port %d,"
2443
logger.info("Now listening on address %r, port %d,"
1763
2444
" flowinfo %d, scope_id %d"
1764
2445
% tcp_server.socket.getsockname())
1765
2446
else: # IPv4
1766
logger.info(u"Now listening on address %r, port %d"
2447
logger.info("Now listening on address %r, port %d"
1767
2448
% tcp_server.socket.getsockname())
1768
2449
1769
2450
#service.interface = tcp_server.socket.getsockname()[3]
1772
2453
# From the Avahi example code
1773
2454
try:
1774
2455
service.activate()
1775
except dbus.exceptions.DBusException, error:
1776
logger.critical(u"DBusException: %s", error)
2456
except dbus.exceptions.DBusException as error:
2457
logger.critical("DBusException: %s", error)
1777
2458
cleanup()
1778
2459
sys.exit(1)
1779
2460
# End of Avahi example code
1783
2464
(tcp_server.handle_request
1784
2465
(*args[2:], **kwargs) or True))
1785
2466
1786
logger.debug(u"Starting main loop")
2467
logger.debug("Starting main loop")
1787
2468
main_loop.run()
1788
except AvahiError, error:
1789
logger.critical(u"AvahiError: %s", error)
2469
except AvahiError as error:
2470
logger.critical("AvahiError: %s", error)
1790
2471
cleanup()
1791
2472
sys.exit(1)
1792
2473
except KeyboardInterrupt:
1793
2474
if debug:
1794
print >> sys.stderr
1795
logger.debug(u"Server received KeyboardInterrupt")
1796
logger.debug(u"Server exiting")
2475
print("", file=sys.stderr)
2476
logger.debug("Server received KeyboardInterrupt")
2477
logger.debug("Server exiting")
1797
2478
# Must run before the D-Bus bus name gets deregistered
1798
2479
cleanup()
1799
2480
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0