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- Committer: Teddy Hogeborn
- Date: 2012-01-08 10:19:33 UTC
- Revision ID: teddy@recompile.se-20120108101933-xbtodqgepxax8hn1
Tags: version-1.5.2-1
* Makefile (version): Changed to "1.5.2".
* NEWS (Version 1.5.2): New entry.
* debian/changelog (1.5.2-1): - '' -
* NEWS (Version 1.5.2): New entry.
* debian/changelog (1.5.2-1): - '' -
- 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 © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
16
16
#
17
17
# 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 = "1.5.2"
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(debug, 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
if debug:
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
128
logger.setLevel(level)
129
130
131
class PGPError(Exception):
132
"""Exception if encryption/decryption fails"""
133
pass
134
135
136
class PGPEngine(object):
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
138
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet',
146
'--no-use-agent'])
147
148
def __enter__(self):
149
return self
150
151
def __exit__ (self, exc_type, exc_value, traceback):
152
self._cleanup()
153
return False
154
155
def __del__(self):
156
self._cleanup()
157
158
def _cleanup(self):
159
if self.tempdir is not None:
160
# Delete contents of tempdir
161
for root, dirs, files in os.walk(self.tempdir,
162
topdown = False):
163
for filename in files:
164
os.remove(os.path.join(root, filename))
165
for dirname in dirs:
166
os.rmdir(os.path.join(root, dirname))
167
# Remove tempdir
168
os.rmdir(self.tempdir)
169
self.tempdir = None
170
171
def password_encode(self, password):
172
# Passphrase can not be empty and can not contain newlines or
173
# NUL bytes. So we prefix it and hex encode it.
174
return b"mandos" + binascii.hexlify(password)
175
176
def encrypt(self, data, password):
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
179
try:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
184
f.write(data)
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
187
proc.wait()
188
except IOError as e:
189
raise PGPError(e)
190
self.gnupg.passphrase = None
191
return ciphertext
192
193
def decrypt(self, data, password):
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
196
try:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
201
f.write(data)
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
204
proc.wait()
205
except IOError as e:
206
raise PGPError(e)
207
self.gnupg.passphrase = None
208
return decrypted_plaintext
209
210
100
211
101
212
class AvahiError(Exception):
102
213
def __init__(self, value, *args, **kwargs):
118
229
Attributes:
119
230
interface: integer; avahi.IF_UNSPEC or an interface index.
120
231
Used to optionally bind to the specified interface.
121
name: string; Example: u'Mandos'
122
type: string; Example: u'_mandos._tcp'.
232
name: string; Example: 'Mandos'
233
type: string; Example: '_mandos._tcp'.
123
234
See <http://www.dns-sd.org/ServiceTypes.html>
124
235
port: integer; what port to announce
125
236
TXT: list of strings; TXT record for the service
134
245
"""
135
246
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
136
247
servicetype = None, port = None, TXT = None,
137
domain = u"", host = u"", max_renames = 32768,
248
domain = "", host = "", max_renames = 32768,
138
249
protocol = avahi.PROTO_UNSPEC, bus = None):
139
250
self.interface = interface
140
251
self.name = name
149
260
self.group = None # our entry group
150
261
self.server = None
151
262
self.bus = bus
263
self.entry_group_state_changed_match = None
152
264
def rename(self):
153
265
"""Derived from the Avahi example code"""
154
266
if self.rename_count >= self.max_renames:
155
logger.critical(u"No suitable Zeroconf service name found"
156
u" after %i retries, exiting.",
267
logger.critical("No suitable Zeroconf service name found"
268
" after %i retries, exiting.",
157
269
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))
270
raise AvahiServiceError("Too many renames")
271
self.name = unicode(self.server
272
.GetAlternativeServiceName(self.name))
273
logger.info("Changing Zeroconf service name to %r ...",
274
self.name)
166
275
self.remove()
167
self.add()
276
try:
277
self.add()
278
except dbus.exceptions.DBusException as error:
279
logger.critical("DBusException: %s", error)
280
self.cleanup()
281
os._exit(1)
168
282
self.rename_count += 1
169
283
def remove(self):
170
284
"""Derived from the Avahi example code"""
285
if self.entry_group_state_changed_match is not None:
286
self.entry_group_state_changed_match.remove()
287
self.entry_group_state_changed_match = None
171
288
if self.group is not None:
172
289
self.group.Reset()
173
290
def add(self):
174
291
"""Derived from the Avahi example code"""
292
self.remove()
175
293
if self.group is None:
176
294
self.group = dbus.Interface(
177
295
self.bus.get_object(avahi.DBUS_NAME,
178
296
self.server.EntryGroupNew()),
179
297
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' ...",
298
self.entry_group_state_changed_match = (
299
self.group.connect_to_signal(
300
'StateChanged', self.entry_group_state_changed))
301
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
184
302
self.name, self.type)
185
303
self.group.AddService(
186
304
self.interface,
193
311
self.group.Commit()
194
312
def entry_group_state_changed(self, state, error):
195
313
"""Derived from the Avahi example code"""
196
logger.debug(u"Avahi entry group state change: %i", state)
314
logger.debug("Avahi entry group state change: %i", state)
197
315
198
316
if state == avahi.ENTRY_GROUP_ESTABLISHED:
199
logger.debug(u"Zeroconf service established.")
317
logger.debug("Zeroconf service established.")
200
318
elif state == avahi.ENTRY_GROUP_COLLISION:
201
logger.warning(u"Zeroconf service name collision.")
319
logger.info("Zeroconf service name collision.")
202
320
self.rename()
203
321
elif state == avahi.ENTRY_GROUP_FAILURE:
204
logger.critical(u"Avahi: Error in group state changed %s",
322
logger.critical("Avahi: Error in group state changed %s",
205
323
unicode(error))
206
raise AvahiGroupError(u"State changed: %s"
324
raise AvahiGroupError("State changed: %s"
207
325
% unicode(error))
208
326
def cleanup(self):
209
327
"""Derived from the Avahi example code"""
210
328
if self.group is not None:
211
self.group.Free()
329
try:
330
self.group.Free()
331
except (dbus.exceptions.UnknownMethodException,
332
dbus.exceptions.DBusException):
333
pass
212
334
self.group = None
213
def server_state_changed(self, state):
335
self.remove()
336
def server_state_changed(self, state, error=None):
214
337
"""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()
338
logger.debug("Avahi server state change: %i", state)
339
bad_states = { avahi.SERVER_INVALID:
340
"Zeroconf server invalid",
341
avahi.SERVER_REGISTERING: None,
342
avahi.SERVER_COLLISION:
343
"Zeroconf server name collision",
344
avahi.SERVER_FAILURE:
345
"Zeroconf server failure" }
346
if state in bad_states:
347
if bad_states[state] is not None:
348
if error is None:
349
logger.error(bad_states[state])
350
else:
351
logger.error(bad_states[state] + ": %r", error)
352
self.cleanup()
219
353
elif state == avahi.SERVER_RUNNING:
220
354
self.add()
355
else:
356
if error is None:
357
logger.debug("Unknown state: %r", state)
358
else:
359
logger.debug("Unknown state: %r: %r", state, error)
221
360
def activate(self):
222
361
"""Derived from the Avahi example code"""
223
362
if self.server is None:
224
363
self.server = dbus.Interface(
225
364
self.bus.get_object(avahi.DBUS_NAME,
226
avahi.DBUS_PATH_SERVER),
365
avahi.DBUS_PATH_SERVER,
366
follow_name_owner_changes=True),
227
367
avahi.DBUS_INTERFACE_SERVER)
228
self.server.connect_to_signal(u"StateChanged",
368
self.server.connect_to_signal("StateChanged",
229
369
self.server_state_changed)
230
370
self.server_state_changed(self.server.GetState())
231
371
372
class AvahiServiceToSyslog(AvahiService):
373
def rename(self):
374
"""Add the new name to the syslog messages"""
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
379
% self.name))
380
return ret
232
381
382
def timedelta_to_milliseconds(td):
383
"Convert a datetime.timedelta() to milliseconds"
384
return ((td.days * 24 * 60 * 60 * 1000)
385
+ (td.seconds * 1000)
386
+ (td.microseconds // 1000))
387
233
388
class Client(object):
234
389
"""A representation of a client host served by this server.
235
390
236
391
Attributes:
237
name: string; from the config file, used in log messages and
238
D-Bus identifiers
392
approved: bool(); 'None' if not yet approved/disapproved
393
approval_delay: datetime.timedelta(); Time to wait for approval
394
approval_duration: datetime.timedelta(); Duration of one approval
395
checker: subprocess.Popen(); a running checker process used
396
to see if the client lives.
397
'None' if no process is running.
398
checker_callback_tag: a gobject event source tag, or None
399
checker_command: string; External command which is run to check
400
if client lives. %() expansions are done at
401
runtime with vars(self) as dict, so that for
402
instance %(name)s can be used in the command.
403
checker_initiator_tag: a gobject event source tag, or None
404
created: datetime.datetime(); (UTC) object creation
405
client_structure: Object describing what attributes a client has
406
and is used for storing the client at exit
407
current_checker_command: string; current running checker_command
408
disable_initiator_tag: a gobject event source tag, or None
409
enabled: bool()
239
410
fingerprint: string (40 or 32 hexadecimal digits); used to
240
411
uniquely identify the client
241
secret: bytestring; sent verbatim (over TLS) to client
242
412
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()
413
interval: datetime.timedelta(); How often to start a new checker
414
last_approval_request: datetime.datetime(); (UTC) or None
246
415
last_checked_ok: datetime.datetime(); (UTC) or None
416
last_checker_status: integer between 0 and 255 reflecting exit
417
status of last checker. -1 reflects crashed
418
checker, or None.
419
last_enabled: datetime.datetime(); (UTC) or None
420
name: string; from the config file, used in log messages and
421
D-Bus identifiers
422
secret: bytestring; sent verbatim (over TLS) to client
247
423
timeout: datetime.timedelta(); How long from last_checked_ok
248
424
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
425
extended_timeout: extra long timeout when secret has been sent
426
runtime_expansions: Allowed attributes for runtime expansion.
427
expires: datetime.datetime(); time (UTC) when a client will be
428
disabled, or None
262
429
"""
263
430
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))
431
runtime_expansions = ("approval_delay", "approval_duration",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
434
"last_enabled", "name", "timeout")
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
437
"interval": "2m",
438
"checker": "fping -q -- %%(host)s",
439
"host": "",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
442
"approved_by_default": "True",
443
"enabled": "True",
444
}
270
445
271
446
def timeout_milliseconds(self):
272
447
"Return the 'timeout' attribute in milliseconds"
273
return self._timedelta_to_milliseconds(self.timeout)
448
return timedelta_to_milliseconds(self.timeout)
449
450
def extended_timeout_milliseconds(self):
451
"Return the 'extended_timeout' attribute in milliseconds"
452
return timedelta_to_milliseconds(self.extended_timeout)
274
453
275
454
def interval_milliseconds(self):
276
455
"Return the 'interval' attribute in milliseconds"
277
return self._timedelta_to_milliseconds(self.interval)
456
return timedelta_to_milliseconds(self.interval)
278
457
279
def __init__(self, name = None, disable_hook=None, config=None):
458
def approval_delay_milliseconds(self):
459
return timedelta_to_milliseconds(self.approval_delay)
460
461
@staticmethod
462
def config_parser(config):
463
"""Construct a new dict of client settings of this form:
464
{ client_name: {setting_name: value, ...}, ...}
465
with exceptions for any special settings as defined above.
466
NOTE: Must be a pure function. Must return the same result
467
value given the same arguments.
468
"""
469
settings = {}
470
for client_name in config.sections():
471
section = dict(config.items(client_name))
472
client = settings[client_name] = {}
473
474
client["host"] = section["host"]
475
# Reformat values from string types to Python types
476
client["approved_by_default"] = config.getboolean(
477
client_name, "approved_by_default")
478
client["enabled"] = config.getboolean(client_name,
479
"enabled")
480
481
client["fingerprint"] = (section["fingerprint"].upper()
482
.replace(" ", ""))
483
if "secret" in section:
484
client["secret"] = section["secret"].decode("base64")
485
elif "secfile" in section:
486
with open(os.path.expanduser(os.path.expandvars
487
(section["secfile"])),
488
"rb") as secfile:
489
client["secret"] = secfile.read()
490
else:
491
raise TypeError("No secret or secfile for section %s"
492
% section)
493
client["timeout"] = string_to_delta(section["timeout"])
494
client["extended_timeout"] = string_to_delta(
495
section["extended_timeout"])
496
client["interval"] = string_to_delta(section["interval"])
497
client["approval_delay"] = string_to_delta(
498
section["approval_delay"])
499
client["approval_duration"] = string_to_delta(
500
section["approval_duration"])
501
client["checker_command"] = section["checker"]
502
client["last_approval_request"] = None
503
client["last_checked_ok"] = None
504
client["last_checker_status"] = None
505
506
return settings
507
508
509
def __init__(self, settings, name = None):
280
510
"""Note: the 'checker' key in 'config' sets the
281
511
'checker_command' attribute and *not* the 'checker'
282
512
attribute."""
283
513
self.name = name
284
if config is None:
285
config = {}
286
logger.debug(u"Creating client %r", self.name)
514
# adding all client settings
515
for setting, value in settings.iteritems():
516
setattr(self, setting, value)
517
518
if self.enabled:
519
if not hasattr(self, "last_enabled"):
520
self.last_enabled = datetime.datetime.utcnow()
521
if not hasattr(self, "expires"):
522
self.expires = (datetime.datetime.utcnow()
523
+ self.timeout)
524
else:
525
self.last_enabled = None
526
self.expires = None
527
528
logger.debug("Creating client %r", self.name)
287
529
# Uppercase and remove spaces from fingerprint for later
288
530
# comparison purposes with return value from the fingerprint()
289
531
# 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
532
logger.debug(" Fingerprint: %s", self.fingerprint)
533
self.created = settings.get("created",
534
datetime.datetime.utcnow())
535
536
# attributes specific for this server instance
311
537
self.checker = None
312
538
self.checker_initiator_tag = None
313
539
self.disable_initiator_tag = None
314
540
self.checker_callback_tag = None
315
self.checker_command = config[u"checker"]
316
541
self.current_checker_command = None
317
self.last_connect = None
542
self.approved = None
543
self.approvals_pending = 0
544
self.changedstate = (multiprocessing_manager
545
.Condition(multiprocessing_manager
546
.Lock()))
547
self.client_structure = [attr for attr in
548
self.__dict__.iterkeys()
549
if not attr.startswith("_")]
550
self.client_structure.append("client_structure")
551
552
for name, t in inspect.getmembers(type(self),
553
lambda obj:
554
isinstance(obj,
555
property)):
556
if not name.startswith("_"):
557
self.client_structure.append(name)
558
559
# Send notice to process children that client state has changed
560
def send_changedstate(self):
561
with self.changedstate:
562
self.changedstate.notify_all()
318
563
319
564
def enable(self):
320
565
"""Start this client's checker and timeout hooks"""
321
if getattr(self, u"enabled", False):
566
if getattr(self, "enabled", False):
322
567
# Already enabled
323
568
return
569
self.send_changedstate()
570
self.expires = datetime.datetime.utcnow() + self.timeout
571
self.enabled = True
324
572
self.last_enabled = datetime.datetime.utcnow()
573
self.init_checker()
574
575
def disable(self, quiet=True):
576
"""Disable this client."""
577
if not getattr(self, "enabled", False):
578
return False
579
if not quiet:
580
self.send_changedstate()
581
if not quiet:
582
logger.info("Disabling client %s", self.name)
583
if getattr(self, "disable_initiator_tag", False):
584
gobject.source_remove(self.disable_initiator_tag)
585
self.disable_initiator_tag = None
586
self.expires = None
587
if getattr(self, "checker_initiator_tag", False):
588
gobject.source_remove(self.checker_initiator_tag)
589
self.checker_initiator_tag = None
590
self.stop_checker()
591
self.enabled = False
592
# Do not run this again if called by a gobject.timeout_add
593
return False
594
595
def __del__(self):
596
self.disable()
597
598
def init_checker(self):
325
599
# Schedule a new checker to be started an 'interval' from now,
326
600
# and every interval from then on.
327
601
self.checker_initiator_tag = (gobject.timeout_add
331
605
self.disable_initiator_tag = (gobject.timeout_add
332
606
(self.timeout_milliseconds(),
333
607
self.disable))
334
self.enabled = True
335
608
# Also start a new checker *right now*.
336
609
self.start_checker()
337
610
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
611
def checker_callback(self, pid, condition, command):
362
612
"""The checker has completed, so take appropriate actions."""
363
613
self.checker_callback_tag = None
364
614
self.checker = None
365
615
if os.WIFEXITED(condition):
366
exitstatus = os.WEXITSTATUS(condition)
367
if exitstatus == 0:
368
logger.info(u"Checker for %(name)s succeeded",
616
self.last_checker_status = os.WEXITSTATUS(condition)
617
if self.last_checker_status == 0:
618
logger.info("Checker for %(name)s succeeded",
369
619
vars(self))
370
620
self.checked_ok()
371
621
else:
372
logger.info(u"Checker for %(name)s failed",
622
logger.info("Checker for %(name)s failed",
373
623
vars(self))
374
624
else:
375
logger.warning(u"Checker for %(name)s crashed?",
625
self.last_checker_status = -1
626
logger.warning("Checker for %(name)s crashed?",
376
627
vars(self))
377
628
378
def checked_ok(self):
629
def checked_ok(self, timeout=None):
379
630
"""Bump up the timeout for this client.
380
631
381
632
This should only be called when the client has been seen,
382
633
alive and well.
383
634
"""
635
if timeout is None:
636
timeout = self.timeout
384
637
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))
638
if self.disable_initiator_tag is not None:
639
gobject.source_remove(self.disable_initiator_tag)
640
if getattr(self, "enabled", False):
641
self.disable_initiator_tag = (gobject.timeout_add
642
(timedelta_to_milliseconds
643
(timeout), self.disable))
644
self.expires = datetime.datetime.utcnow() + timeout
645
646
def need_approval(self):
647
self.last_approval_request = datetime.datetime.utcnow()
389
648
390
649
def start_checker(self):
391
650
"""Start a new checker subprocess if one is not running.
404
663
# If a checker exists, make sure it is not a zombie
405
664
try:
406
665
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
407
except (AttributeError, OSError), error:
666
except (AttributeError, OSError) as error:
408
667
if (isinstance(error, OSError)
409
668
and error.errno != errno.ECHILD):
410
669
raise error
411
670
else:
412
671
if pid:
413
logger.warning(u"Checker was a zombie")
672
logger.warning("Checker was a zombie")
414
673
gobject.source_remove(self.checker_callback_tag)
415
674
self.checker_callback(pid, status,
416
675
self.current_checker_command)
421
680
command = self.checker_command % self.host
422
681
except TypeError:
423
682
# 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())
683
escaped_attrs = dict(
684
(attr,
685
re.escape(unicode(str(getattr(self, attr, "")),
686
errors=
687
'replace')))
688
for attr in
689
self.runtime_expansions)
690
430
691
try:
431
692
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)
693
except TypeError as error:
694
logger.error('Could not format string "%s":'
695
' %s', self.checker_command, error)
435
696
return True # Try again later
436
697
self.current_checker_command = command
437
698
try:
438
logger.info(u"Starting checker %r for %s",
699
logger.info("Starting checker %r for %s",
439
700
command, self.name)
440
701
# We don't need to redirect stdout and stderr, since
441
702
# in normal mode, that is already done by daemon(),
443
704
# always replaced by /dev/null.)
444
705
self.checker = subprocess.Popen(command,
445
706
close_fds=True,
446
shell=True, cwd=u"/")
707
shell=True, cwd="/")
447
708
self.checker_callback_tag = (gobject.child_watch_add
448
709
(self.checker.pid,
449
710
self.checker_callback,
454
715
if pid:
455
716
gobject.source_remove(self.checker_callback_tag)
456
717
self.checker_callback(pid, status, command)
457
except OSError, error:
458
logger.error(u"Failed to start subprocess: %s",
718
except OSError as error:
719
logger.error("Failed to start subprocess: %s",
459
720
error)
460
721
# Re-run this periodically if run by gobject.timeout_add
461
722
return True
465
726
if self.checker_callback_tag:
466
727
gobject.source_remove(self.checker_callback_tag)
467
728
self.checker_callback_tag = None
468
if getattr(self, u"checker", None) is None:
729
if getattr(self, "checker", None) is None:
469
730
return
470
logger.debug(u"Stopping checker for %(name)s", vars(self))
731
logger.debug("Stopping checker for %(name)s", vars(self))
471
732
try:
472
733
os.kill(self.checker.pid, signal.SIGTERM)
473
734
#time.sleep(0.5)
474
735
#if self.checker.poll() is None:
475
736
# os.kill(self.checker.pid, signal.SIGKILL)
476
except OSError, error:
737
except OSError as error:
477
738
if error.errno != errno.ESRCH: # No such process
478
739
raise
479
740
self.checker = None
480
741
481
742
482
def dbus_service_property(dbus_interface, signature=u"v",
483
access=u"readwrite", byte_arrays=False):
743
def dbus_service_property(dbus_interface, signature="v",
744
access="readwrite", byte_arrays=False):
484
745
"""Decorators for marking methods of a DBusObjectWithProperties to
485
746
become properties on the D-Bus.
486
747
493
754
"""
494
755
# Encoding deeply encoded byte arrays is not supported yet by the
495
756
# "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)
757
if byte_arrays and signature != "ay":
758
raise ValueError("Byte arrays not supported for non-'ay'"
759
" signature %r" % signature)
499
760
def decorator(func):
500
761
func._dbus_is_property = True
501
762
func._dbus_interface = dbus_interface
502
763
func._dbus_signature = signature
503
764
func._dbus_access = access
504
765
func._dbus_name = func.__name__
505
if func._dbus_name.endswith(u"_dbus_property"):
766
if func._dbus_name.endswith("_dbus_property"):
506
767
func._dbus_name = func._dbus_name[:-14]
507
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
768
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
508
769
return func
509
770
return decorator
510
771
530
791
531
792
class DBusObjectWithProperties(dbus.service.Object):
532
793
"""A D-Bus object with properties.
533
794
534
795
Classes inheriting from this can use the dbus_service_property
535
796
decorator to expose methods as D-Bus properties. It exposes the
536
797
standard Get(), Set(), and GetAll() methods on the D-Bus.
538
799
539
800
@staticmethod
540
801
def _is_dbus_property(obj):
541
return getattr(obj, u"_dbus_is_property", False)
802
return getattr(obj, "_dbus_is_property", False)
542
803
543
804
def _get_all_dbus_properties(self):
544
805
"""Returns a generator of (name, attribute) pairs
545
806
"""
546
return ((prop._dbus_name, prop)
807
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
808
for cls in self.__class__.__mro__
547
809
for name, prop in
548
inspect.getmembers(self, self._is_dbus_property))
810
inspect.getmembers(cls, self._is_dbus_property))
549
811
550
812
def _get_dbus_property(self, interface_name, property_name):
551
813
"""Returns a bound method if one exists which is a D-Bus
552
814
property with the specified name and interface.
553
815
"""
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
816
for cls in self.__class__.__mro__:
817
for name, value in (inspect.getmembers
818
(cls, self._is_dbus_property)):
819
if (value._dbus_name == property_name
820
and value._dbus_interface == interface_name):
821
return value.__get__(self)
822
564
823
# No such property
565
raise DBusPropertyNotFound(self.dbus_object_path + u":"
566
+ interface_name + u"."
824
raise DBusPropertyNotFound(self.dbus_object_path + ":"
825
+ interface_name + "."
567
826
+ property_name)
568
827
569
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
570
out_signature=u"v")
828
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
829
out_signature="v")
571
830
def Get(self, interface_name, property_name):
572
831
"""Standard D-Bus property Get() method, see D-Bus standard.
573
832
"""
574
833
prop = self._get_dbus_property(interface_name, property_name)
575
if prop._dbus_access == u"write":
834
if prop._dbus_access == "write":
576
835
raise DBusPropertyAccessException(property_name)
577
836
value = prop()
578
if not hasattr(value, u"variant_level"):
837
if not hasattr(value, "variant_level"):
579
838
return value
580
839
return type(value)(value, variant_level=value.variant_level+1)
581
840
582
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
841
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
583
842
def Set(self, interface_name, property_name, value):
584
843
"""Standard D-Bus property Set() method, see D-Bus standard.
585
844
"""
586
845
prop = self._get_dbus_property(interface_name, property_name)
587
if prop._dbus_access == u"read":
846
if prop._dbus_access == "read":
588
847
raise DBusPropertyAccessException(property_name)
589
if prop._dbus_get_args_options[u"byte_arrays"]:
848
if prop._dbus_get_args_options["byte_arrays"]:
590
849
# The byte_arrays option is not supported yet on
591
850
# signatures other than "ay".
592
if prop._dbus_signature != u"ay":
851
if prop._dbus_signature != "ay":
593
852
raise ValueError
594
value = dbus.ByteArray(''.join(unichr(byte)
595
for byte in value))
853
value = dbus.ByteArray(b''.join(chr(byte)
854
for byte in value))
596
855
prop(value)
597
856
598
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
599
out_signature=u"a{sv}")
857
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
858
out_signature="a{sv}")
600
859
def GetAll(self, interface_name):
601
860
"""Standard D-Bus property GetAll() method, see D-Bus
602
861
standard.
603
862
604
863
Note: Will not include properties with access="write".
605
864
"""
606
all = {}
865
properties = {}
607
866
for name, prop in self._get_all_dbus_properties():
608
867
if (interface_name
609
868
and interface_name != prop._dbus_interface):
610
869
# Interface non-empty but did not match
611
870
continue
612
871
# Ignore write-only properties
613
if prop._dbus_access == u"write":
872
if prop._dbus_access == "write":
614
873
continue
615
874
value = prop()
616
if not hasattr(value, u"variant_level"):
617
all[name] = value
875
if not hasattr(value, "variant_level"):
876
properties[name] = value
618
877
continue
619
all[name] = type(value)(value, variant_level=
620
value.variant_level+1)
621
return dbus.Dictionary(all, signature=u"sv")
878
properties[name] = type(value)(value, variant_level=
879
value.variant_level+1)
880
return dbus.Dictionary(properties, signature="sv")
622
881
623
882
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
624
out_signature=u"s",
883
out_signature="s",
625
884
path_keyword='object_path',
626
885
connection_keyword='connection')
627
886
def Introspect(self, object_path, connection):
632
891
try:
633
892
document = xml.dom.minidom.parseString(xmlstring)
634
893
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)
894
e = document.createElement("property")
895
e.setAttribute("name", name)
896
e.setAttribute("type", prop._dbus_signature)
897
e.setAttribute("access", prop._dbus_access)
639
898
return e
640
for if_tag in document.getElementsByTagName(u"interface"):
899
for if_tag in document.getElementsByTagName("interface"):
641
900
for tag in (make_tag(document, name, prop)
642
901
for name, prop
643
902
in self._get_all_dbus_properties()
644
903
if prop._dbus_interface
645
== if_tag.getAttribute(u"name")):
904
== if_tag.getAttribute("name")):
646
905
if_tag.appendChild(tag)
647
906
# Add the names to the return values for the
648
907
# "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")
908
if (if_tag.getAttribute("name")
909
== "org.freedesktop.DBus.Properties"):
910
for cn in if_tag.getElementsByTagName("method"):
911
if cn.getAttribute("name") == "Get":
912
for arg in cn.getElementsByTagName("arg"):
913
if (arg.getAttribute("direction")
914
== "out"):
915
arg.setAttribute("name", "value")
916
elif cn.getAttribute("name") == "GetAll":
917
for arg in cn.getElementsByTagName("arg"):
918
if (arg.getAttribute("direction")
919
== "out"):
920
arg.setAttribute("name", "props")
921
xmlstring = document.toxml("utf-8")
663
922
document.unlink()
664
923
except (AttributeError, xml.dom.DOMException,
665
xml.parsers.expat.ExpatError), error:
666
logger.error(u"Failed to override Introspection method",
924
xml.parsers.expat.ExpatError) as error:
925
logger.error("Failed to override Introspection method",
667
926
error)
668
927
return xmlstring
669
928
670
929
930
def datetime_to_dbus (dt, variant_level=0):
931
"""Convert a UTC datetime.datetime() to a D-Bus type."""
932
if dt is None:
933
return dbus.String("", variant_level = variant_level)
934
return dbus.String(dt.isoformat(),
935
variant_level=variant_level)
936
937
938
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
939
.__metaclass__):
940
"""Applied to an empty subclass of a D-Bus object, this metaclass
941
will add additional D-Bus attributes matching a certain pattern.
942
"""
943
def __new__(mcs, name, bases, attr):
944
# Go through all the base classes which could have D-Bus
945
# methods, signals, or properties in them
946
for base in (b for b in bases
947
if issubclass(b, dbus.service.Object)):
948
# Go though all attributes of the base class
949
for attrname, attribute in inspect.getmembers(base):
950
# Ignore non-D-Bus attributes, and D-Bus attributes
951
# with the wrong interface name
952
if (not hasattr(attribute, "_dbus_interface")
953
or not attribute._dbus_interface
954
.startswith("se.recompile.Mandos")):
955
continue
956
# Create an alternate D-Bus interface name based on
957
# the current name
958
alt_interface = (attribute._dbus_interface
959
.replace("se.recompile.Mandos",
960
"se.bsnet.fukt.Mandos"))
961
# Is this a D-Bus signal?
962
if getattr(attribute, "_dbus_is_signal", False):
963
# Extract the original non-method function by
964
# black magic
965
nonmethod_func = (dict(
966
zip(attribute.func_code.co_freevars,
967
attribute.__closure__))["func"]
968
.cell_contents)
969
# Create a new, but exactly alike, function
970
# object, and decorate it to be a new D-Bus signal
971
# with the alternate D-Bus interface name
972
new_function = (dbus.service.signal
973
(alt_interface,
974
attribute._dbus_signature)
975
(types.FunctionType(
976
nonmethod_func.func_code,
977
nonmethod_func.func_globals,
978
nonmethod_func.func_name,
979
nonmethod_func.func_defaults,
980
nonmethod_func.func_closure)))
981
# Define a creator of a function to call both the
982
# old and new functions, so both the old and new
983
# signals gets sent when the function is called
984
def fixscope(func1, func2):
985
"""This function is a scope container to pass
986
func1 and func2 to the "call_both" function
987
outside of its arguments"""
988
def call_both(*args, **kwargs):
989
"""This function will emit two D-Bus
990
signals by calling func1 and func2"""
991
func1(*args, **kwargs)
992
func2(*args, **kwargs)
993
return call_both
994
# Create the "call_both" function and add it to
995
# the class
996
attr[attrname] = fixscope(attribute,
997
new_function)
998
# Is this a D-Bus method?
999
elif getattr(attribute, "_dbus_is_method", False):
1000
# Create a new, but exactly alike, function
1001
# object. Decorate it to be a new D-Bus method
1002
# with the alternate D-Bus interface name. Add it
1003
# to the class.
1004
attr[attrname] = (dbus.service.method
1005
(alt_interface,
1006
attribute._dbus_in_signature,
1007
attribute._dbus_out_signature)
1008
(types.FunctionType
1009
(attribute.func_code,
1010
attribute.func_globals,
1011
attribute.func_name,
1012
attribute.func_defaults,
1013
attribute.func_closure)))
1014
# Is this a D-Bus property?
1015
elif getattr(attribute, "_dbus_is_property", False):
1016
# Create a new, but exactly alike, function
1017
# object, and decorate it to be a new D-Bus
1018
# property with the alternate D-Bus interface
1019
# name. Add it to the class.
1020
attr[attrname] = (dbus_service_property
1021
(alt_interface,
1022
attribute._dbus_signature,
1023
attribute._dbus_access,
1024
attribute
1025
._dbus_get_args_options
1026
["byte_arrays"])
1027
(types.FunctionType
1028
(attribute.func_code,
1029
attribute.func_globals,
1030
attribute.func_name,
1031
attribute.func_defaults,
1032
attribute.func_closure)))
1033
return type.__new__(mcs, name, bases, attr)
1034
1035
671
1036
class ClientDBus(Client, DBusObjectWithProperties):
672
1037
"""A Client class using D-Bus
673
1038
675
1040
dbus_object_path: dbus.ObjectPath
676
1041
bus: dbus.SystemBus()
677
1042
"""
1043
1044
runtime_expansions = (Client.runtime_expansions
1045
+ ("dbus_object_path",))
1046
678
1047
# dbus.service.Object doesn't use super(), so we can't either.
679
1048
680
1049
def __init__(self, bus = None, *args, **kwargs):
682
1051
Client.__init__(self, *args, **kwargs)
683
1052
# Only now, when this client is initialized, can it show up on
684
1053
# the D-Bus
1054
client_object_name = unicode(self.name).translate(
1055
{ord("."): ord("_"),
1056
ord("-"): ord("_")})
685
1057
self.dbus_object_path = (dbus.ObjectPath
686
(u"/clients/"
687
+ self.name.replace(u".", u"_")))
1058
("/clients/" + client_object_name))
688
1059
DBusObjectWithProperties.__init__(self, self.bus,
689
1060
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
1061
1062
def notifychangeproperty(transform_func,
1063
dbus_name, type_func=lambda x: x,
1064
variant_level=1):
1065
""" Modify a variable so that it's a property which announces
1066
its changes to DBus.
1067
1068
transform_fun: Function that takes a value and a variant_level
1069
and transforms it to a D-Bus type.
1070
dbus_name: D-Bus name of the variable
1071
type_func: Function that transform the value before sending it
1072
to the D-Bus. Default: no transform
1073
variant_level: D-Bus variant level. Default: 1
1074
"""
1075
attrname = "_{0}".format(dbus_name)
1076
def setter(self, value):
1077
if hasattr(self, "dbus_object_path"):
1078
if (not hasattr(self, attrname) or
1079
type_func(getattr(self, attrname, None))
1080
!= type_func(value)):
1081
dbus_value = transform_func(type_func(value),
1082
variant_level
1083
=variant_level)
1084
self.PropertyChanged(dbus.String(dbus_name),
1085
dbus_value)
1086
setattr(self, attrname, value)
1087
1088
return property(lambda self: getattr(self, attrname), setter)
1089
1090
1091
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1092
approvals_pending = notifychangeproperty(dbus.Boolean,
1093
"ApprovalPending",
1094
type_func = bool)
1095
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1096
last_enabled = notifychangeproperty(datetime_to_dbus,
1097
"LastEnabled")
1098
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1099
type_func = lambda checker:
1100
checker is not None)
1101
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1102
"LastCheckedOK")
1103
last_approval_request = notifychangeproperty(
1104
datetime_to_dbus, "LastApprovalRequest")
1105
approved_by_default = notifychangeproperty(dbus.Boolean,
1106
"ApprovedByDefault")
1107
approval_delay = notifychangeproperty(dbus.UInt64,
1108
"ApprovalDelay",
1109
type_func =
1110
timedelta_to_milliseconds)
1111
approval_duration = notifychangeproperty(
1112
dbus.UInt64, "ApprovalDuration",
1113
type_func = timedelta_to_milliseconds)
1114
host = notifychangeproperty(dbus.String, "Host")
1115
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1116
type_func =
1117
timedelta_to_milliseconds)
1118
extended_timeout = notifychangeproperty(
1119
dbus.UInt64, "ExtendedTimeout",
1120
type_func = timedelta_to_milliseconds)
1121
interval = notifychangeproperty(dbus.UInt64,
1122
"Interval",
1123
type_func =
1124
timedelta_to_milliseconds)
1125
checker_command = notifychangeproperty(dbus.String, "Checker")
1126
1127
del notifychangeproperty
718
1128
719
1129
def __del__(self, *args, **kwargs):
720
1130
try:
721
1131
self.remove_from_connection()
722
1132
except LookupError:
723
1133
pass
724
if hasattr(DBusObjectWithProperties, u"__del__"):
1134
if hasattr(DBusObjectWithProperties, "__del__"):
725
1135
DBusObjectWithProperties.__del__(self, *args, **kwargs)
726
1136
Client.__del__(self, *args, **kwargs)
727
1137
729
1139
*args, **kwargs):
730
1140
self.checker_callback_tag = None
731
1141
self.checker = None
732
# Emit D-Bus signal
733
self.PropertyChanged(dbus.String(u"checker_running"),
734
dbus.Boolean(False, variant_level=1))
735
1142
if os.WIFEXITED(condition):
736
1143
exitstatus = os.WEXITSTATUS(condition)
737
1144
# Emit D-Bus signal
747
1154
return Client.checker_callback(self, pid, condition, command,
748
1155
*args, **kwargs)
749
1156
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
1157
def start_checker(self, *args, **kwargs):
760
1158
old_checker = self.checker
761
1159
if self.checker is not None:
768
1166
and old_checker_pid != self.checker.pid):
769
1167
# Emit D-Bus signal
770
1168
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
1169
return r
1170
1171
def _reset_approved(self):
1172
self.approved = None
1173
return False
1174
1175
def approve(self, value=True):
1176
self.send_changedstate()
1177
self.approved = value
1178
gobject.timeout_add(timedelta_to_milliseconds
1179
(self.approval_duration),
1180
self._reset_approved)
1181
784
1182
785
1183
## D-Bus methods, signals & properties
786
_interface = u"se.bsnet.fukt.Mandos.Client"
1184
_interface = "se.recompile.Mandos.Client"
787
1185
788
1186
## Signals
789
1187
790
1188
# CheckerCompleted - signal
791
@dbus.service.signal(_interface, signature=u"nxs")
1189
@dbus.service.signal(_interface, signature="nxs")
792
1190
def CheckerCompleted(self, exitcode, waitstatus, command):
793
1191
"D-Bus signal"
794
1192
pass
795
1193
796
1194
# CheckerStarted - signal
797
@dbus.service.signal(_interface, signature=u"s")
1195
@dbus.service.signal(_interface, signature="s")
798
1196
def CheckerStarted(self, command):
799
1197
"D-Bus signal"
800
1198
pass
801
1199
802
1200
# PropertyChanged - signal
803
@dbus.service.signal(_interface, signature=u"sv")
1201
@dbus.service.signal(_interface, signature="sv")
804
1202
def PropertyChanged(self, property, value):
805
1203
"D-Bus signal"
806
1204
pass
808
1206
# GotSecret - signal
809
1207
@dbus.service.signal(_interface)
810
1208
def GotSecret(self):
811
"D-Bus signal"
1209
"""D-Bus signal
1210
Is sent after a successful transfer of secret from the Mandos
1211
server to mandos-client
1212
"""
812
1213
pass
813
1214
814
1215
# Rejected - signal
815
@dbus.service.signal(_interface)
816
def Rejected(self):
1216
@dbus.service.signal(_interface, signature="s")
1217
def Rejected(self, reason):
817
1218
"D-Bus signal"
818
1219
pass
819
1220
1221
# NeedApproval - signal
1222
@dbus.service.signal(_interface, signature="tb")
1223
def NeedApproval(self, timeout, default):
1224
"D-Bus signal"
1225
return self.need_approval()
1226
820
1227
## Methods
821
1228
1229
# Approve - method
1230
@dbus.service.method(_interface, in_signature="b")
1231
def Approve(self, value):
1232
self.approve(value)
1233
822
1234
# CheckedOK - method
823
1235
@dbus.service.method(_interface)
824
1236
def CheckedOK(self):
825
return self.checked_ok()
1237
self.checked_ok()
826
1238
827
1239
# Enable - method
828
1240
@dbus.service.method(_interface)
849
1261
850
1262
## Properties
851
1263
852
# name - property
853
@dbus_service_property(_interface, signature=u"s", access=u"read")
854
def name_dbus_property(self):
1264
# ApprovalPending - property
1265
@dbus_service_property(_interface, signature="b", access="read")
1266
def ApprovalPending_dbus_property(self):
1267
return dbus.Boolean(bool(self.approvals_pending))
1268
1269
# ApprovedByDefault - property
1270
@dbus_service_property(_interface, signature="b",
1271
access="readwrite")
1272
def ApprovedByDefault_dbus_property(self, value=None):
1273
if value is None: # get
1274
return dbus.Boolean(self.approved_by_default)
1275
self.approved_by_default = bool(value)
1276
1277
# ApprovalDelay - property
1278
@dbus_service_property(_interface, signature="t",
1279
access="readwrite")
1280
def ApprovalDelay_dbus_property(self, value=None):
1281
if value is None: # get
1282
return dbus.UInt64(self.approval_delay_milliseconds())
1283
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1284
1285
# ApprovalDuration - property
1286
@dbus_service_property(_interface, signature="t",
1287
access="readwrite")
1288
def ApprovalDuration_dbus_property(self, value=None):
1289
if value is None: # get
1290
return dbus.UInt64(timedelta_to_milliseconds(
1291
self.approval_duration))
1292
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1293
1294
# Name - property
1295
@dbus_service_property(_interface, signature="s", access="read")
1296
def Name_dbus_property(self):
855
1297
return dbus.String(self.name)
856
1298
857
# fingerprint - property
858
@dbus_service_property(_interface, signature=u"s", access=u"read")
859
def fingerprint_dbus_property(self):
1299
# Fingerprint - property
1300
@dbus_service_property(_interface, signature="s", access="read")
1301
def Fingerprint_dbus_property(self):
860
1302
return dbus.String(self.fingerprint)
861
1303
862
# host - property
863
@dbus_service_property(_interface, signature=u"s",
864
access=u"readwrite")
865
def host_dbus_property(self, value=None):
1304
# Host - property
1305
@dbus_service_property(_interface, signature="s",
1306
access="readwrite")
1307
def Host_dbus_property(self, value=None):
866
1308
if value is None: # get
867
1309
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):
1310
self.host = unicode(value)
1311
1312
# Created - property
1313
@dbus_service_property(_interface, signature="s", access="read")
1314
def Created_dbus_property(self):
1315
return datetime_to_dbus(self.created)
1316
1317
# LastEnabled - property
1318
@dbus_service_property(_interface, signature="s", access="read")
1319
def LastEnabled_dbus_property(self):
1320
return datetime_to_dbus(self.last_enabled)
1321
1322
# Enabled - property
1323
@dbus_service_property(_interface, signature="b",
1324
access="readwrite")
1325
def Enabled_dbus_property(self, value=None):
889
1326
if value is None: # get
890
1327
return dbus.Boolean(self.enabled)
891
1328
if value:
893
1330
else:
894
1331
self.disable()
895
1332
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):
1333
# LastCheckedOK - property
1334
@dbus_service_property(_interface, signature="s",
1335
access="readwrite")
1336
def LastCheckedOK_dbus_property(self, value=None):
900
1337
if value is not None:
901
1338
self.checked_ok()
902
1339
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):
1340
return datetime_to_dbus(self.last_checked_ok)
1341
1342
# Expires - property
1343
@dbus_service_property(_interface, signature="s", access="read")
1344
def Expires_dbus_property(self):
1345
return datetime_to_dbus(self.expires)
1346
1347
# LastApprovalRequest - property
1348
@dbus_service_property(_interface, signature="s", access="read")
1349
def LastApprovalRequest_dbus_property(self):
1350
return datetime_to_dbus(self.last_approval_request)
1351
1352
# Timeout - property
1353
@dbus_service_property(_interface, signature="t",
1354
access="readwrite")
1355
def Timeout_dbus_property(self, value=None):
912
1356
if value is None: # get
913
1357
return dbus.UInt64(self.timeout_milliseconds())
914
1358
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:
919
return
920
1359
# Reschedule timeout
921
gobject.source_remove(self.disable_initiator_tag)
922
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()))
929
if time_to_die <= 0:
930
# The timeout has passed
931
self.disable()
932
else:
933
self.disable_initiator_tag = (gobject.timeout_add
934
(time_to_die, self.disable))
935
936
# interval - property
937
@dbus_service_property(_interface, signature=u"t",
938
access=u"readwrite")
939
def interval_dbus_property(self, value=None):
1360
if self.enabled:
1361
now = datetime.datetime.utcnow()
1362
time_to_die = timedelta_to_milliseconds(
1363
(self.last_checked_ok + self.timeout) - now)
1364
if time_to_die <= 0:
1365
# The timeout has passed
1366
self.disable()
1367
else:
1368
self.expires = (now +
1369
datetime.timedelta(milliseconds =
1370
time_to_die))
1371
if (getattr(self, "disable_initiator_tag", None)
1372
is None):
1373
return
1374
gobject.source_remove(self.disable_initiator_tag)
1375
self.disable_initiator_tag = (gobject.timeout_add
1376
(time_to_die,
1377
self.disable))
1378
1379
# ExtendedTimeout - property
1380
@dbus_service_property(_interface, signature="t",
1381
access="readwrite")
1382
def ExtendedTimeout_dbus_property(self, value=None):
1383
if value is None: # get
1384
return dbus.UInt64(self.extended_timeout_milliseconds())
1385
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1386
1387
# Interval - property
1388
@dbus_service_property(_interface, signature="t",
1389
access="readwrite")
1390
def Interval_dbus_property(self, value=None):
940
1391
if value is None: # get
941
1392
return dbus.UInt64(self.interval_milliseconds())
942
1393
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:
1394
if getattr(self, "checker_initiator_tag", None) is None:
947
1395
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):
1396
if self.enabled:
1397
# Reschedule checker run
1398
gobject.source_remove(self.checker_initiator_tag)
1399
self.checker_initiator_tag = (gobject.timeout_add
1400
(value, self.start_checker))
1401
self.start_checker() # Start one now, too
1402
1403
# Checker - property
1404
@dbus_service_property(_interface, signature="s",
1405
access="readwrite")
1406
def Checker_dbus_property(self, value=None):
958
1407
if value is None: # get
959
1408
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))
1409
self.checker_command = unicode(value)
965
1410
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):
1411
# CheckerRunning - property
1412
@dbus_service_property(_interface, signature="b",
1413
access="readwrite")
1414
def CheckerRunning_dbus_property(self, value=None):
970
1415
if value is None: # get
971
1416
return dbus.Boolean(self.checker is not None)
972
1417
if value:
974
1419
else:
975
1420
self.stop_checker()
976
1421
977
# object_path - property
978
@dbus_service_property(_interface, signature=u"o", access=u"read")
979
def object_path_dbus_property(self):
1422
# ObjectPath - property
1423
@dbus_service_property(_interface, signature="o", access="read")
1424
def ObjectPath_dbus_property(self):
980
1425
return self.dbus_object_path # is already a dbus.ObjectPath
981
1426
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):
1427
# Secret = property
1428
@dbus_service_property(_interface, signature="ay",
1429
access="write", byte_arrays=True)
1430
def Secret_dbus_property(self, value):
986
1431
self.secret = str(value)
987
1432
988
1433
del _interface
989
1434
990
1435
1436
class ProxyClient(object):
1437
def __init__(self, child_pipe, fpr, address):
1438
self._pipe = child_pipe
1439
self._pipe.send(('init', fpr, address))
1440
if not self._pipe.recv():
1441
raise KeyError()
1442
1443
def __getattribute__(self, name):
1444
if name == '_pipe':
1445
return super(ProxyClient, self).__getattribute__(name)
1446
self._pipe.send(('getattr', name))
1447
data = self._pipe.recv()
1448
if data[0] == 'data':
1449
return data[1]
1450
if data[0] == 'function':
1451
def func(*args, **kwargs):
1452
self._pipe.send(('funcall', name, args, kwargs))
1453
return self._pipe.recv()[1]
1454
return func
1455
1456
def __setattr__(self, name, value):
1457
if name == '_pipe':
1458
return super(ProxyClient, self).__setattr__(name, value)
1459
self._pipe.send(('setattr', name, value))
1460
1461
1462
class ClientDBusTransitional(ClientDBus):
1463
__metaclass__ = AlternateDBusNamesMetaclass
1464
1465
991
1466
class ClientHandler(socketserver.BaseRequestHandler, object):
992
1467
"""A class to handle client connections.
993
1468
995
1470
Note: This will run in its own forked process."""
996
1471
997
1472
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):
1473
with contextlib.closing(self.server.child_pipe) as child_pipe:
1474
logger.info("TCP connection from: %s",
1475
unicode(self.client_address))
1476
logger.debug("Pipe FD: %d",
1477
self.server.child_pipe.fileno())
1478
1006
1479
session = (gnutls.connection
1007
1480
.ClientSession(self.request,
1008
1481
gnutls.connection
1013
1486
# no X.509 keys are added to it. Therefore, we can use it
1014
1487
# here despite using OpenPGP certificates.
1015
1488
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"))
1489
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1490
# "+AES-256-CBC", "+SHA1",
1491
# "+COMP-NULL", "+CTYPE-OPENPGP",
1492
# "+DHE-DSS"))
1020
1493
# Use a fallback default, since this MUST be set.
1021
1494
priority = self.server.gnutls_priority
1022
1495
if priority is None:
1023
priority = u"NORMAL"
1496
priority = "NORMAL"
1024
1497
(gnutls.library.functions
1025
1498
.gnutls_priority_set_direct(session._c_object,
1026
1499
priority, None))
1028
1501
# Start communication using the Mandos protocol
1029
1502
# Get protocol number
1030
1503
line = self.request.makefile().readline()
1031
logger.debug(u"Protocol version: %r", line)
1504
logger.debug("Protocol version: %r", line)
1032
1505
try:
1033
1506
if int(line.strip().split()[0]) > 1:
1034
1507
raise RuntimeError
1035
except (ValueError, IndexError, RuntimeError), error:
1036
logger.error(u"Unknown protocol version: %s", error)
1508
except (ValueError, IndexError, RuntimeError) as error:
1509
logger.error("Unknown protocol version: %s", error)
1037
1510
return
1038
1511
1039
1512
# Start GnuTLS connection
1040
1513
try:
1041
1514
session.handshake()
1042
except gnutls.errors.GNUTLSError, error:
1043
logger.warning(u"Handshake failed: %s", error)
1515
except gnutls.errors.GNUTLSError as error:
1516
logger.warning("Handshake failed: %s", error)
1044
1517
# Do not run session.bye() here: the session is not
1045
1518
# established. Just abandon the request.
1046
1519
return
1047
logger.debug(u"Handshake succeeded")
1520
logger.debug("Handshake succeeded")
1521
1522
approval_required = False
1048
1523
try:
1049
1524
try:
1050
1525
fpr = self.fingerprint(self.peer_certificate
1051
1526
(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
1527
except (TypeError,
1528
gnutls.errors.GNUTLSError) as error:
1529
logger.warning("Bad certificate: %s", error)
1530
return
1531
logger.debug("Fingerprint: %s", fpr)
1532
1533
try:
1534
client = ProxyClient(child_pipe, fpr,
1535
self.client_address)
1536
except KeyError:
1537
return
1538
1539
if client.approval_delay:
1540
delay = client.approval_delay
1541
client.approvals_pending += 1
1542
approval_required = True
1543
1544
while True:
1545
if not client.enabled:
1546
logger.info("Client %s is disabled",
1547
client.name)
1548
if self.server.use_dbus:
1549
# Emit D-Bus signal
1550
client.Rejected("Disabled")
1551
return
1552
1553
if client.approved or not client.approval_delay:
1554
#We are approved or approval is disabled
1060
1555
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()
1556
elif client.approved is None:
1557
logger.info("Client %s needs approval",
1558
client.name)
1559
if self.server.use_dbus:
1560
# Emit D-Bus signal
1561
client.NeedApproval(
1562
client.approval_delay_milliseconds(),
1563
client.approved_by_default)
1564
else:
1565
logger.warning("Client %s was not approved",
1566
client.name)
1567
if self.server.use_dbus:
1568
# Emit D-Bus signal
1569
client.Rejected("Denied")
1570
return
1571
1572
#wait until timeout or approved
1573
time = datetime.datetime.now()
1574
client.changedstate.acquire()
1575
(client.changedstate.wait
1576
(float(client.timedelta_to_milliseconds(delay)
1577
/ 1000)))
1578
client.changedstate.release()
1579
time2 = datetime.datetime.now()
1580
if (time2 - time) >= delay:
1581
if not client.approved_by_default:
1582
logger.warning("Client %s timed out while"
1583
" waiting for approval",
1584
client.name)
1585
if self.server.use_dbus:
1586
# Emit D-Bus signal
1587
client.Rejected("Approval timed out")
1588
return
1589
else:
1590
break
1591
else:
1592
delay -= time2 - time
1593
1090
1594
sent_size = 0
1091
1595
while sent_size < len(client.secret):
1092
sent = session.send(client.secret[sent_size:])
1093
logger.debug(u"Sent: %d, remaining: %d",
1596
try:
1597
sent = session.send(client.secret[sent_size:])
1598
except gnutls.errors.GNUTLSError as error:
1599
logger.warning("gnutls send failed")
1600
return
1601
logger.debug("Sent: %d, remaining: %d",
1094
1602
sent, len(client.secret)
1095
1603
- (sent_size + sent))
1096
1604
sent_size += sent
1605
1606
logger.info("Sending secret to %s", client.name)
1607
# bump the timeout using extended_timeout
1608
client.checked_ok(client.extended_timeout)
1609
if self.server.use_dbus:
1610
# Emit D-Bus signal
1611
client.GotSecret()
1612
1097
1613
finally:
1098
session.bye()
1614
if approval_required:
1615
client.approvals_pending -= 1
1616
try:
1617
session.bye()
1618
except gnutls.errors.GNUTLSError as error:
1619
logger.warning("GnuTLS bye failed")
1099
1620
1100
1621
@staticmethod
1101
1622
def peer_certificate(session):
1111
1632
.gnutls_certificate_get_peers
1112
1633
(session._c_object, ctypes.byref(list_size)))
1113
1634
if not bool(cert_list) and list_size.value != 0:
1114
raise gnutls.errors.GNUTLSError(u"error getting peer"
1115
u" certificate")
1635
raise gnutls.errors.GNUTLSError("error getting peer"
1636
" certificate")
1116
1637
if list_size.value == 0:
1117
1638
return None
1118
1639
cert = cert_list[0]
1144
1665
if crtverify.value != 0:
1145
1666
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1146
1667
raise (gnutls.errors.CertificateSecurityError
1147
(u"Verify failed"))
1668
("Verify failed"))
1148
1669
# New buffer for the fingerprint
1149
1670
buf = ctypes.create_string_buffer(20)
1150
1671
buf_len = ctypes.c_size_t()
1157
1678
# Convert the buffer to a Python bytestring
1158
1679
fpr = ctypes.string_at(buf, buf_len.value)
1159
1680
# Convert the bytestring to hexadecimal notation
1160
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1681
hex_fpr = binascii.hexlify(fpr).upper()
1161
1682
return hex_fpr
1162
1683
1163
1684
1164
class ForkingMixInWithPipes(socketserver.ForkingMixIn, object):
1165
"""Like socketserver.ForkingMixIn, but also pass a pipe pair."""
1685
class MultiprocessingMixIn(object):
1686
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1687
def sub_process_main(self, request, address):
1688
try:
1689
self.finish_request(request, address)
1690
except Exception:
1691
self.handle_error(request, address)
1692
self.close_request(request)
1693
1694
def process_request(self, request, address):
1695
"""Start a new process to process the request."""
1696
proc = multiprocessing.Process(target = self.sub_process_main,
1697
args = (request,
1698
address))
1699
proc.start()
1700
return proc
1701
1702
1703
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1704
""" adds a pipe to the MixIn """
1166
1705
def process_request(self, request, client_address):
1167
1706
"""Overrides and wraps the original process_request().
1168
1707
1169
1708
This function creates a new pipe in self.pipe
1170
1709
"""
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):
1710
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1711
1712
proc = MultiprocessingMixIn.process_request(self, request,
1713
client_address)
1714
self.child_pipe.close()
1715
self.add_pipe(parent_pipe, proc)
1716
1717
def add_pipe(self, parent_pipe, proc):
1182
1718
"""Dummy function; override as necessary"""
1183
child_pipe_fd.close()
1184
parent_pipe_fd.close()
1185
1186
1187
class IPv6_TCPServer(ForkingMixInWithPipes,
1719
raise NotImplementedError
1720
1721
1722
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1188
1723
socketserver.TCPServer, object):
1189
1724
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1190
1725
1206
1741
bind to an address or port if they were not specified."""
1207
1742
if self.interface is not None:
1208
1743
if SO_BINDTODEVICE is None:
1209
logger.error(u"SO_BINDTODEVICE does not exist;"
1210
u" cannot bind to interface %s",
1744
logger.error("SO_BINDTODEVICE does not exist;"
1745
" cannot bind to interface %s",
1211
1746
self.interface)
1212
1747
else:
1213
1748
try:
1214
1749
self.socket.setsockopt(socket.SOL_SOCKET,
1215
1750
SO_BINDTODEVICE,
1216
1751
str(self.interface
1217
+ u'\0'))
1218
except socket.error, error:
1752
+ '\0'))
1753
except socket.error as error:
1219
1754
if error[0] == errno.EPERM:
1220
logger.error(u"No permission to"
1221
u" bind to interface %s",
1755
logger.error("No permission to"
1756
" bind to interface %s",
1222
1757
self.interface)
1223
1758
elif error[0] == errno.ENOPROTOOPT:
1224
logger.error(u"SO_BINDTODEVICE not available;"
1225
u" cannot bind to interface %s",
1759
logger.error("SO_BINDTODEVICE not available;"
1760
" cannot bind to interface %s",
1226
1761
self.interface)
1227
1762
else:
1228
1763
raise
1230
1765
if self.server_address[0] or self.server_address[1]:
1231
1766
if not self.server_address[0]:
1232
1767
if self.address_family == socket.AF_INET6:
1233
any_address = u"::" # in6addr_any
1768
any_address = "::" # in6addr_any
1234
1769
else:
1235
1770
any_address = socket.INADDR_ANY
1236
1771
self.server_address = (any_address,
1263
1798
self.enabled = False
1264
1799
self.clients = clients
1265
1800
if self.clients is None:
1266
self.clients = set()
1801
self.clients = {}
1267
1802
self.use_dbus = use_dbus
1268
1803
self.gnutls_priority = gnutls_priority
1269
1804
IPv6_TCPServer.__init__(self, server_address,
1273
1808
def server_activate(self):
1274
1809
if self.enabled:
1275
1810
return socketserver.TCPServer.server_activate(self)
1811
1276
1812
def enable(self):
1277
1813
self.enabled = True
1278
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
1814
1815
def add_pipe(self, parent_pipe, proc):
1279
1816
# Call "handle_ipc" for both data and EOF events
1280
gobject.io_add_watch(child_pipe_fd.fileno(),
1817
gobject.io_add_watch(parent_pipe.fileno(),
1281
1818
gobject.IO_IN | gobject.IO_HUP,
1282
1819
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):
1820
parent_pipe =
1821
parent_pipe,
1822
proc = proc))
1823
1824
def handle_ipc(self, source, condition, parent_pipe=None,
1825
proc = None, client_object=None):
1286
1826
condition_names = {
1287
gobject.IO_IN: u"IN", # There is data to read.
1288
gobject.IO_OUT: u"OUT", # Data can be written (without
1827
gobject.IO_IN: "IN", # There is data to read.
1828
gobject.IO_OUT: "OUT", # Data can be written (without
1289
1829
# 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
1830
gobject.IO_PRI: "PRI", # There is urgent data to read.
1831
gobject.IO_ERR: "ERR", # Error condition.
1832
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1293
1833
# broken, usually for pipes and
1294
1834
# sockets).
1295
1835
}
1297
1837
for cond, name in
1298
1838
condition_names.iteritems()
1299
1839
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
1840
# error, or the other end of multiprocessing.Pipe has closed
1841
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1842
# Wait for other process to exit
1843
proc.join()
1844
return False
1845
1846
# Read a request from the child
1847
request = parent_pipe.recv()
1848
command = request[0]
1849
1850
if command == 'init':
1851
fpr = request[1]
1852
address = request[2]
1853
1854
for c in self.clients.itervalues():
1855
if c.fingerprint == fpr:
1856
client = c
1857
break
1858
else:
1859
logger.info("Client not found for fingerprint: %s, ad"
1860
"dress: %s", fpr, address)
1861
if self.use_dbus:
1862
# Emit D-Bus signal
1863
mandos_dbus_service.ClientNotFound(fpr,
1864
address[0])
1865
parent_pipe.send(False)
1866
return False
1867
1868
gobject.io_add_watch(parent_pipe.fileno(),
1869
gobject.IO_IN | gobject.IO_HUP,
1870
functools.partial(self.handle_ipc,
1871
parent_pipe =
1872
parent_pipe,
1873
proc = proc,
1874
client_object =
1875
client))
1876
parent_pipe.send(True)
1877
# remove the old hook in favor of the new above hook on
1878
# same fileno
1879
return False
1880
if command == 'funcall':
1881
funcname = request[1]
1882
args = request[2]
1883
kwargs = request[3]
1884
1885
parent_pipe.send(('data', getattr(client_object,
1886
funcname)(*args,
1887
**kwargs)))
1888
1889
if command == 'getattr':
1890
attrname = request[1]
1891
if callable(client_object.__getattribute__(attrname)):
1892
parent_pipe.send(('function',))
1893
else:
1894
parent_pipe.send(('data', client_object
1895
.__getattribute__(attrname)))
1896
1897
if command == 'setattr':
1898
attrname = request[1]
1899
value = request[2]
1900
setattr(client_object, attrname, value)
1901
1364
1902
return True
1365
1903
1366
1904
1367
1905
def string_to_delta(interval):
1368
1906
"""Parse a string and return a datetime.timedelta
1369
1907
1370
>>> string_to_delta(u'7d')
1908
>>> string_to_delta('7d')
1371
1909
datetime.timedelta(7)
1372
>>> string_to_delta(u'60s')
1910
>>> string_to_delta('60s')
1373
1911
datetime.timedelta(0, 60)
1374
>>> string_to_delta(u'60m')
1912
>>> string_to_delta('60m')
1375
1913
datetime.timedelta(0, 3600)
1376
>>> string_to_delta(u'24h')
1914
>>> string_to_delta('24h')
1377
1915
datetime.timedelta(1)
1378
>>> string_to_delta(u'1w')
1916
>>> string_to_delta('1w')
1379
1917
datetime.timedelta(7)
1380
>>> string_to_delta(u'5m 30s')
1918
>>> string_to_delta('5m 30s')
1381
1919
datetime.timedelta(0, 330)
1382
1920
"""
1383
1921
timevalue = datetime.timedelta(0)
1385
1923
try:
1386
1924
suffix = unicode(s[-1])
1387
1925
value = int(s[:-1])
1388
if suffix == u"d":
1926
if suffix == "d":
1389
1927
delta = datetime.timedelta(value)
1390
elif suffix == u"s":
1928
elif suffix == "s":
1391
1929
delta = datetime.timedelta(0, value)
1392
elif suffix == u"m":
1930
elif suffix == "m":
1393
1931
delta = datetime.timedelta(0, 0, 0, 0, value)
1394
elif suffix == u"h":
1932
elif suffix == "h":
1395
1933
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1396
elif suffix == u"w":
1934
elif suffix == "w":
1397
1935
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1398
1936
else:
1399
raise ValueError(u"Unknown suffix %r" % suffix)
1400
except (ValueError, IndexError), e:
1401
raise ValueError(e.message)
1937
raise ValueError("Unknown suffix %r" % suffix)
1938
except (ValueError, IndexError) as e:
1939
raise ValueError(*(e.args))
1402
1940
timevalue += delta
1403
1941
return timevalue
1404
1942
1405
1943
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
1944
def daemon(nochdir = False, noclose = False):
1431
1945
"""See daemon(3). Standard BSD Unix function.
1432
1946
1435
1949
sys.exit()
1436
1950
os.setsid()
1437
1951
if not nochdir:
1438
os.chdir(u"/")
1952
os.chdir("/")
1439
1953
if os.fork():
1440
1954
sys.exit()
1441
1955
if not noclose:
1443
1957
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1444
1958
if not stat.S_ISCHR(os.fstat(null).st_mode):
1445
1959
raise OSError(errno.ENODEV,
1446
u"%s not a character device"
1960
"%s not a character device"
1447
1961
% os.path.devnull)
1448
1962
os.dup2(null, sys.stdin.fileno())
1449
1963
os.dup2(null, sys.stdout.fileno())
1457
1971
##################################################################
1458
1972
# Parsing of options, both command line and config file
1459
1973
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]
1974
parser = argparse.ArgumentParser()
1975
parser.add_argument("-v", "--version", action="version",
1976
version = "%%(prog)s %s" % version,
1977
help="show version number and exit")
1978
parser.add_argument("-i", "--interface", metavar="IF",
1979
help="Bind to interface IF")
1980
parser.add_argument("-a", "--address",
1981
help="Address to listen for requests on")
1982
parser.add_argument("-p", "--port", type=int,
1983
help="Port number to receive requests on")
1984
parser.add_argument("--check", action="store_true",
1985
help="Run self-test")
1986
parser.add_argument("--debug", action="store_true",
1987
help="Debug mode; run in foreground and log"
1988
" to terminal")
1989
parser.add_argument("--debuglevel", metavar="LEVEL",
1990
help="Debug level for stdout output")
1991
parser.add_argument("--priority", help="GnuTLS"
1992
" priority string (see GnuTLS documentation)")
1993
parser.add_argument("--servicename",
1994
metavar="NAME", help="Zeroconf service name")
1995
parser.add_argument("--configdir",
1996
default="/etc/mandos", metavar="DIR",
1997
help="Directory to search for configuration"
1998
" files")
1999
parser.add_argument("--no-dbus", action="store_false",
2000
dest="use_dbus", help="Do not provide D-Bus"
2001
" system bus interface")
2002
parser.add_argument("--no-ipv6", action="store_false",
2003
dest="use_ipv6", help="Do not use IPv6")
2004
parser.add_argument("--no-restore", action="store_false",
2005
dest="restore", help="Do not restore stored"
2006
" state")
2007
parser.add_argument("--statedir", metavar="DIR",
2008
help="Directory to save/restore state in")
2009
2010
options = parser.parse_args()
1486
2011
1487
2012
if options.check:
1488
2013
import doctest
1490
2015
sys.exit()
1491
2016
1492
2017
# 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",
2018
server_defaults = { "interface": "",
2019
"address": "",
2020
"port": "",
2021
"debug": "False",
2022
"priority":
2023
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2024
"servicename": "Mandos",
2025
"use_dbus": "True",
2026
"use_ipv6": "True",
2027
"debuglevel": "",
2028
"restore": "True",
2029
"statedir": "/var/lib/mandos"
1502
2030
}
1503
2031
1504
2032
# Parse config file for server-global settings
1505
2033
server_config = configparser.SafeConfigParser(server_defaults)
1506
2034
del server_defaults
1507
2035
server_config.read(os.path.join(options.configdir,
1508
u"mandos.conf"))
2036
"mandos.conf"))
1509
2037
# Convert the SafeConfigParser object to a dict
1510
2038
server_settings = server_config.defaults()
1511
2039
# 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",
2040
for option in ("debug", "use_dbus", "use_ipv6"):
2041
server_settings[option] = server_config.getboolean("DEFAULT",
1514
2042
option)
1515
2043
if server_settings["port"]:
1516
server_settings["port"] = server_config.getint(u"DEFAULT",
1517
u"port")
2044
server_settings["port"] = server_config.getint("DEFAULT",
2045
"port")
1518
2046
del server_config
1519
2047
1520
2048
# Override the settings from the config file with command line
1521
2049
# 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"):
2050
for option in ("interface", "address", "port", "debug",
2051
"priority", "servicename", "configdir",
2052
"use_dbus", "use_ipv6", "debuglevel", "restore",
2053
"statedir"):
1525
2054
value = getattr(options, option)
1526
2055
if value is not None:
1527
2056
server_settings[option] = value
1535
2064
##################################################################
1536
2065
1537
2066
# 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":
2067
debug = server_settings["debug"]
2068
debuglevel = server_settings["debuglevel"]
2069
use_dbus = server_settings["use_dbus"]
2070
use_ipv6 = server_settings["use_ipv6"]
2071
stored_state_path = os.path.join(server_settings["statedir"],
2072
stored_state_file)
2073
2074
if debug:
2075
initlogger(debug, logging.DEBUG)
2076
else:
2077
if not debuglevel:
2078
initlogger(debug)
2079
else:
2080
level = getattr(logging, debuglevel.upper())
2081
initlogger(debug, level)
2082
2083
if server_settings["servicename"] != "Mandos":
1547
2084
syslogger.setFormatter(logging.Formatter
1548
(u'Mandos (%s) [%%(process)d]:'
1549
u' %%(levelname)s: %%(message)s'
1550
% server_settings[u"servicename"]))
2085
('Mandos (%s) [%%(process)d]:'
2086
' %%(levelname)s: %%(message)s'
2087
% server_settings["servicename"]))
1551
2088
1552
2089
# 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"))
2090
client_config = configparser.SafeConfigParser(Client
2091
.client_defaults)
2092
client_config.read(os.path.join(server_settings["configdir"],
2093
"clients.conf"))
1561
2094
1562
2095
global mandos_dbus_service
1563
2096
mandos_dbus_service = None
1564
2097
1565
tcp_server = MandosServer((server_settings[u"address"],
1566
server_settings[u"port"]),
2098
tcp_server = MandosServer((server_settings["address"],
2099
server_settings["port"]),
1567
2100
ClientHandler,
1568
interface=(server_settings[u"interface"]
2101
interface=(server_settings["interface"]
1569
2102
or None),
1570
2103
use_ipv6=use_ipv6,
1571
2104
gnutls_priority=
1572
server_settings[u"priority"],
2105
server_settings["priority"],
1573
2106
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)
2107
if not debug:
2108
pidfilename = "/var/run/mandos.pid"
2109
try:
2110
pidfile = open(pidfilename, "w")
2111
except IOError:
2112
logger.error("Could not open file %r", pidfilename)
1579
2113
1580
2114
try:
1581
uid = pwd.getpwnam(u"_mandos").pw_uid
1582
gid = pwd.getpwnam(u"_mandos").pw_gid
2115
uid = pwd.getpwnam("_mandos").pw_uid
2116
gid = pwd.getpwnam("_mandos").pw_gid
1583
2117
except KeyError:
1584
2118
try:
1585
uid = pwd.getpwnam(u"mandos").pw_uid
1586
gid = pwd.getpwnam(u"mandos").pw_gid
2119
uid = pwd.getpwnam("mandos").pw_uid
2120
gid = pwd.getpwnam("mandos").pw_gid
1587
2121
except KeyError:
1588
2122
try:
1589
uid = pwd.getpwnam(u"nobody").pw_uid
1590
gid = pwd.getpwnam(u"nobody").pw_gid
2123
uid = pwd.getpwnam("nobody").pw_uid
2124
gid = pwd.getpwnam("nobody").pw_gid
1591
2125
except KeyError:
1592
2126
uid = 65534
1593
2127
gid = 65534
1594
2128
try:
1595
2129
os.setgid(gid)
1596
2130
os.setuid(uid)
1597
except OSError, error:
2131
except OSError as error:
1598
2132
if error[0] != errno.EPERM:
1599
2133
raise error
1600
2134
1601
# Enable all possible GnuTLS debugging
1602
2135
if debug:
2136
# Enable all possible GnuTLS debugging
2137
1603
2138
# "Use a log level over 10 to enable all debugging options."
1604
2139
# - GnuTLS manual
1605
2140
gnutls.library.functions.gnutls_global_set_log_level(11)
1606
2141
1607
2142
@gnutls.library.types.gnutls_log_func
1608
2143
def debug_gnutls(level, string):
1609
logger.debug(u"GnuTLS: %s", string[:-1])
2144
logger.debug("GnuTLS: %s", string[:-1])
1610
2145
1611
2146
(gnutls.library.functions
1612
2147
.gnutls_global_set_log_function(debug_gnutls))
2148
2149
# Redirect stdin so all checkers get /dev/null
2150
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2151
os.dup2(null, sys.stdin.fileno())
2152
if null > 2:
2153
os.close(null)
2154
2155
# Need to fork before connecting to D-Bus
2156
if not debug:
2157
# Close all input and output, do double fork, etc.
2158
daemon()
2159
2160
gobject.threads_init()
1613
2161
1614
2162
global main_loop
1615
2163
# From the Avahi example code
1619
2167
# End of Avahi example code
1620
2168
if use_dbus:
1621
2169
try:
1622
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2170
bus_name = dbus.service.BusName("se.recompile.Mandos",
1623
2171
bus, do_not_queue=True)
1624
except dbus.exceptions.NameExistsException, e:
1625
logger.error(unicode(e) + u", disabling D-Bus")
2172
old_bus_name = (dbus.service.BusName
2173
("se.bsnet.fukt.Mandos", bus,
2174
do_not_queue=True))
2175
except dbus.exceptions.NameExistsException as e:
2176
logger.error(unicode(e) + ", disabling D-Bus")
1626
2177
use_dbus = False
1627
server_settings[u"use_dbus"] = False
2178
server_settings["use_dbus"] = False
1628
2179
tcp_server.use_dbus = False
1629
2180
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)
2181
service = AvahiServiceToSyslog(name =
2182
server_settings["servicename"],
2183
servicetype = "_mandos._tcp",
2184
protocol = protocol, bus = bus)
1633
2185
if server_settings["interface"]:
1634
2186
service.interface = (if_nametoindex
1635
(str(server_settings[u"interface"])))
2187
(str(server_settings["interface"])))
2188
2189
global multiprocessing_manager
2190
multiprocessing_manager = multiprocessing.Manager()
1636
2191
1637
2192
client_class = Client
1638
2193
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()))
2194
client_class = functools.partial(ClientDBusTransitional,
2195
bus = bus)
2196
2197
client_settings = Client.config_parser(client_config)
2198
old_client_settings = {}
2199
clients_data = {}
2200
2201
# Get client data and settings from last running state.
2202
if server_settings["restore"]:
2203
try:
2204
with open(stored_state_path, "rb") as stored_state:
2205
clients_data, old_client_settings = (pickle.load
2206
(stored_state))
2207
os.remove(stored_state_path)
2208
except IOError as e:
2209
logger.warning("Could not load persistent state: {0}"
2210
.format(e))
2211
if e.errno != errno.ENOENT:
2212
raise
2213
except EOFError as e:
2214
logger.warning("Could not load persistent state: "
2215
"EOFError: {0}".format(e))
2216
2217
with PGPEngine() as pgp:
2218
for client_name, client in clients_data.iteritems():
2219
# Decide which value to use after restoring saved state.
2220
# We have three different values: Old config file,
2221
# new config file, and saved state.
2222
# New config value takes precedence if it differs from old
2223
# config value, otherwise use saved state.
2224
for name, value in client_settings[client_name].items():
2225
try:
2226
# For each value in new config, check if it
2227
# differs from the old config value (Except for
2228
# the "secret" attribute)
2229
if (name != "secret" and
2230
value != old_client_settings[client_name]
2231
[name]):
2232
client[name] = value
2233
except KeyError:
2234
pass
2235
2236
# Clients who has passed its expire date can still be
2237
# enabled if its last checker was successful. Clients
2238
# whose checker succeeded before we stored its state is
2239
# assumed to have successfully run all checkers during
2240
# downtime.
2241
if client["enabled"]:
2242
if datetime.datetime.utcnow() >= client["expires"]:
2243
if not client["last_checked_ok"]:
2244
logger.warning(
2245
"disabling client {0} - Client never "
2246
"performed a successful checker"
2247
.format(client_name))
2248
client["enabled"] = False
2249
elif client["last_checker_status"] != 0:
2250
logger.warning(
2251
"disabling client {0} - Client "
2252
"last checker failed with error code {1}"
2253
.format(client_name,
2254
client["last_checker_status"]))
2255
client["enabled"] = False
2256
else:
2257
client["expires"] = (datetime.datetime
2258
.utcnow()
2259
+ client["timeout"])
2260
logger.debug("Last checker succeeded,"
2261
" keeping {0} enabled"
2262
.format(client_name))
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)
2278
- set(client_settings)):
2279
del clients_data[client_name]
2280
for client_name in (set(client_settings)
2281
- set(old_client_settings)):
2282
clients_data[client_name] = client_settings[client_name]
2283
2284
# Create all client objects
2285
for client_name, client in clients_data.iteritems():
2286
tcp_server.clients[client_name] = client_class(
2287
name = client_name, settings = client)
2288
1644
2289
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
2290
logger.warning("No clients defined")
2291
1672
2292
if not debug:
2293
try:
2294
with pidfile:
2295
pid = os.getpid()
2296
pidfile.write(str(pid) + "\n".encode("utf-8"))
2297
del pidfile
2298
except IOError:
2299
logger.error("Could not write to file %r with PID %d",
2300
pidfilename, pid)
2301
except NameError:
2302
# "pidfile" was never created
2303
pass
2304
del pidfilename
1673
2305
signal.signal(signal.SIGINT, signal.SIG_IGN)
2306
1674
2307
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1675
2308
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1676
2309
1678
2311
class MandosDBusService(dbus.service.Object):
1679
2312
"""A D-Bus proxy object"""
1680
2313
def __init__(self):
1681
dbus.service.Object.__init__(self, bus, u"/")
1682
_interface = u"se.bsnet.fukt.Mandos"
2314
dbus.service.Object.__init__(self, bus, "/")
2315
_interface = "se.recompile.Mandos"
1683
2316
1684
@dbus.service.signal(_interface, signature=u"o")
2317
@dbus.service.signal(_interface, signature="o")
1685
2318
def ClientAdded(self, objpath):
1686
2319
"D-Bus signal"
1687
2320
pass
1688
2321
1689
@dbus.service.signal(_interface, signature=u"ss")
2322
@dbus.service.signal(_interface, signature="ss")
1690
2323
def ClientNotFound(self, fingerprint, address):
1691
2324
"D-Bus signal"
1692
2325
pass
1693
2326
1694
@dbus.service.signal(_interface, signature=u"os")
2327
@dbus.service.signal(_interface, signature="os")
1695
2328
def ClientRemoved(self, objpath, name):
1696
2329
"D-Bus signal"
1697
2330
pass
1698
2331
1699
@dbus.service.method(_interface, out_signature=u"ao")
2332
@dbus.service.method(_interface, out_signature="ao")
1700
2333
def GetAllClients(self):
1701
2334
"D-Bus method"
1702
2335
return dbus.Array(c.dbus_object_path
1703
for c in tcp_server.clients)
2336
for c in
2337
tcp_server.clients.itervalues())
1704
2338
1705
2339
@dbus.service.method(_interface,
1706
out_signature=u"a{oa{sv}}")
2340
out_signature="a{oa{sv}}")
1707
2341
def GetAllClientsWithProperties(self):
1708
2342
"D-Bus method"
1709
2343
return dbus.Dictionary(
1710
((c.dbus_object_path, c.GetAll(u""))
1711
for c in tcp_server.clients),
1712
signature=u"oa{sv}")
2344
((c.dbus_object_path, c.GetAll(""))
2345
for c in tcp_server.clients.itervalues()),
2346
signature="oa{sv}")
1713
2347
1714
@dbus.service.method(_interface, in_signature=u"o")
2348
@dbus.service.method(_interface, in_signature="o")
1715
2349
def RemoveClient(self, object_path):
1716
2350
"D-Bus method"
1717
for c in tcp_server.clients:
2351
for c in tcp_server.clients.itervalues():
1718
2352
if c.dbus_object_path == object_path:
1719
tcp_server.clients.remove(c)
2353
del tcp_server.clients[c.name]
1720
2354
c.remove_from_connection()
1721
2355
# Don't signal anything except ClientRemoved
1722
2356
c.disable(quiet=True)
1727
2361
1728
2362
del _interface
1729
2363
1730
mandos_dbus_service = MandosDBusService()
2364
class MandosDBusServiceTransitional(MandosDBusService):
2365
__metaclass__ = AlternateDBusNamesMetaclass
2366
mandos_dbus_service = MandosDBusServiceTransitional()
1731
2367
1732
2368
def cleanup():
1733
2369
"Cleanup function; run on exit"
1734
2370
service.cleanup()
1735
2371
2372
multiprocessing.active_children()
2373
if not (tcp_server.clients or client_settings):
2374
return
2375
2376
# Store client before exiting. Secrets are encrypted with key
2377
# based on what config file has. If config file is
2378
# removed/edited, old secret will thus be unrecovable.
2379
clients = {}
2380
with PGPEngine() as pgp:
2381
for client in tcp_server.clients.itervalues():
2382
key = client_settings[client.name]["secret"]
2383
client.encrypted_secret = pgp.encrypt(client.secret,
2384
key)
2385
client_dict = {}
2386
2387
# A list of attributes that can not be pickled
2388
# + secret.
2389
exclude = set(("bus", "changedstate", "secret",
2390
"checker"))
2391
for name, typ in (inspect.getmembers
2392
(dbus.service.Object)):
2393
exclude.add(name)
2394
2395
client_dict["encrypted_secret"] = (client
2396
.encrypted_secret)
2397
for attr in client.client_structure:
2398
if attr not in exclude:
2399
client_dict[attr] = getattr(client, attr)
2400
2401
clients[client.name] = client_dict
2402
del client_settings[client.name]["secret"]
2403
2404
try:
2405
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2406
prefix="clients-",
2407
dir=os.path.dirname
2408
(stored_state_path))
2409
with os.fdopen(tempfd, "wb") as stored_state:
2410
pickle.dump((clients, client_settings), stored_state)
2411
os.rename(tempname, stored_state_path)
2412
except (IOError, OSError) as e:
2413
logger.warning("Could not save persistent state: {0}"
2414
.format(e))
2415
if not debug:
2416
try:
2417
os.remove(tempname)
2418
except NameError:
2419
pass
2420
if e.errno not in set((errno.ENOENT, errno.EACCES,
2421
errno.EEXIST)):
2422
raise e
2423
2424
# Delete all clients, and settings from config
1736
2425
while tcp_server.clients:
1737
client = tcp_server.clients.pop()
2426
name, client = tcp_server.clients.popitem()
1738
2427
if use_dbus:
1739
2428
client.remove_from_connection()
1740
client.disable_hook = None
1741
2429
# Don't signal anything except ClientRemoved
1742
2430
client.disable(quiet=True)
1743
2431
if use_dbus:
1744
2432
# Emit D-Bus signal
1745
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2433
mandos_dbus_service.ClientRemoved(client
2434
.dbus_object_path,
1746
2435
client.name)
2436
client_settings.clear()
1747
2437
1748
2438
atexit.register(cleanup)
1749
2439
1750
for client in tcp_server.clients:
2440
for client in tcp_server.clients.itervalues():
1751
2441
if use_dbus:
1752
2442
# Emit D-Bus signal
1753
2443
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1754
client.enable()
2444
# Need to initiate checking of clients
2445
if client.enabled:
2446
client.init_checker()
1755
2447
1756
2448
tcp_server.enable()
1757
2449
tcp_server.server_activate()
1759
2451
# Find out what port we got
1760
2452
service.port = tcp_server.socket.getsockname()[1]
1761
2453
if use_ipv6:
1762
logger.info(u"Now listening on address %r, port %d,"
2454
logger.info("Now listening on address %r, port %d,"
1763
2455
" flowinfo %d, scope_id %d"
1764
2456
% tcp_server.socket.getsockname())
1765
2457
else: # IPv4
1766
logger.info(u"Now listening on address %r, port %d"
2458
logger.info("Now listening on address %r, port %d"
1767
2459
% tcp_server.socket.getsockname())
1768
2460
1769
2461
#service.interface = tcp_server.socket.getsockname()[3]
1772
2464
# From the Avahi example code
1773
2465
try:
1774
2466
service.activate()
1775
except dbus.exceptions.DBusException, error:
1776
logger.critical(u"DBusException: %s", error)
2467
except dbus.exceptions.DBusException as error:
2468
logger.critical("DBusException: %s", error)
1777
2469
cleanup()
1778
2470
sys.exit(1)
1779
2471
# End of Avahi example code
1783
2475
(tcp_server.handle_request
1784
2476
(*args[2:], **kwargs) or True))
1785
2477
1786
logger.debug(u"Starting main loop")
2478
logger.debug("Starting main loop")
1787
2479
main_loop.run()
1788
except AvahiError, error:
1789
logger.critical(u"AvahiError: %s", error)
2480
except AvahiError as error:
2481
logger.critical("AvahiError: %s", error)
1790
2482
cleanup()
1791
2483
sys.exit(1)
1792
2484
except KeyboardInterrupt:
1793
2485
if debug:
1794
print >> sys.stderr
1795
logger.debug(u"Server received KeyboardInterrupt")
1796
logger.debug(u"Server exiting")
2486
print("", file=sys.stderr)
2487
logger.debug("Server received KeyboardInterrupt")
2488
logger.debug("Server exiting")
1797
2489
# Must run before the D-Bus bus name gets deregistered
1798
2490
cleanup()
1799
2491
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0