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- Committer: teddy at bsnet
- Date: 2010-09-09 18:16:14 UTC
- mfrom: (237.2.35 mandos-empty-device)
- Revision ID: teddy@fukt.bsnet.se-20100909181614-oanlmvkzsiodbo3c
Merge in branch to interpret an empty device name to mean
"autodetect".
"autodetect".
- files removed:
- 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 © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 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@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
34
from __future__ import division, with_statement, absolute_import
36
35
37
36
import SocketServer as socketserver
38
37
import socket
39
import argparse
38
import optparse
40
39
import datetime
41
40
import errno
42
41
import gnutls.crypto
61
60
import fcntl
62
61
import functools
63
62
import cPickle as pickle
64
import multiprocessing
65
import types
66
import binascii
67
import tempfile
63
import select
68
64
69
65
import dbus
70
66
import dbus.service
75
71
import ctypes.util
76
72
import xml.dom.minidom
77
73
import inspect
78
import GnuPGInterface
79
74
80
75
try:
81
76
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
80
except ImportError:
86
81
SO_BINDTODEVICE = None
87
82
88
version = "1.4.1"
89
stored_state_file = "clients.pickle"
90
91
logger = logging.getLogger()
83
84
version = "1.0.14"
85
86
logger = logging.Logger(u'mandos')
92
87
syslogger = (logging.handlers.SysLogHandler
93
88
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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
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)
211
100
212
101
class AvahiError(Exception):
213
102
def __init__(self, value, *args, **kwargs):
229
118
Attributes:
230
119
interface: integer; avahi.IF_UNSPEC or an interface index.
231
120
Used to optionally bind to the specified interface.
232
name: string; Example: 'Mandos'
233
type: string; Example: '_mandos._tcp'.
121
name: string; Example: u'Mandos'
122
type: string; Example: u'_mandos._tcp'.
234
123
See <http://www.dns-sd.org/ServiceTypes.html>
235
124
port: integer; what port to announce
236
125
TXT: list of strings; TXT record for the service
245
134
"""
246
135
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
247
136
servicetype = None, port = None, TXT = None,
248
domain = "", host = "", max_renames = 32768,
137
domain = u"", host = u"", max_renames = 32768,
249
138
protocol = avahi.PROTO_UNSPEC, bus = None):
250
139
self.interface = interface
251
140
self.name = name
260
149
self.group = None # our entry group
261
150
self.server = None
262
151
self.bus = bus
263
self.entry_group_state_changed_match = None
264
152
def rename(self):
265
153
"""Derived from the Avahi example code"""
266
154
if self.rename_count >= self.max_renames:
267
logger.critical("No suitable Zeroconf service name found"
268
" after %i retries, exiting.",
155
logger.critical(u"No suitable Zeroconf service name found"
156
u" after %i retries, exiting.",
269
157
self.rename_count)
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)
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))
275
166
self.remove()
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)
167
self.add()
282
168
self.rename_count += 1
283
169
def remove(self):
284
170
"""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
288
171
if self.group is not None:
289
172
self.group.Reset()
290
173
def add(self):
291
174
"""Derived from the Avahi example code"""
292
self.remove()
293
175
if self.group is None:
294
176
self.group = dbus.Interface(
295
177
self.bus.get_object(avahi.DBUS_NAME,
296
178
self.server.EntryGroupNew()),
297
179
avahi.DBUS_INTERFACE_ENTRY_GROUP)
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' ...",
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' ...",
302
184
self.name, self.type)
303
185
self.group.AddService(
304
186
self.interface,
311
193
self.group.Commit()
312
194
def entry_group_state_changed(self, state, error):
313
195
"""Derived from the Avahi example code"""
314
logger.debug("Avahi entry group state change: %i", state)
196
logger.debug(u"Avahi entry group state change: %i", state)
315
197
316
198
if state == avahi.ENTRY_GROUP_ESTABLISHED:
317
logger.debug("Zeroconf service established.")
199
logger.debug(u"Zeroconf service established.")
318
200
elif state == avahi.ENTRY_GROUP_COLLISION:
319
logger.info("Zeroconf service name collision.")
201
logger.warning(u"Zeroconf service name collision.")
320
202
self.rename()
321
203
elif state == avahi.ENTRY_GROUP_FAILURE:
322
logger.critical("Avahi: Error in group state changed %s",
204
logger.critical(u"Avahi: Error in group state changed %s",
323
205
unicode(error))
324
raise AvahiGroupError("State changed: %s"
206
raise AvahiGroupError(u"State changed: %s"
325
207
% unicode(error))
326
208
def cleanup(self):
327
209
"""Derived from the Avahi example code"""
328
210
if self.group is not None:
329
try:
330
self.group.Free()
331
except (dbus.exceptions.UnknownMethodException,
332
dbus.exceptions.DBusException):
333
pass
211
self.group.Free()
334
212
self.group = None
335
self.remove()
336
def server_state_changed(self, state, error=None):
213
def server_state_changed(self, state):
337
214
"""Derived from the Avahi example code"""
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()
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()
353
219
elif state == avahi.SERVER_RUNNING:
354
220
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)
360
221
def activate(self):
361
222
"""Derived from the Avahi example code"""
362
223
if self.server is None:
363
224
self.server = dbus.Interface(
364
225
self.bus.get_object(avahi.DBUS_NAME,
365
avahi.DBUS_PATH_SERVER,
366
follow_name_owner_changes=True),
226
avahi.DBUS_PATH_SERVER),
367
227
avahi.DBUS_INTERFACE_SERVER)
368
self.server.connect_to_signal("StateChanged",
228
self.server.connect_to_signal(u"StateChanged",
369
229
self.server_state_changed)
370
230
self.server_state_changed(self.server.GetState())
371
231
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
381
232
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
388
233
class Client(object):
389
234
"""A representation of a client host served by this server.
390
235
391
236
Attributes:
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
237
name: string; from the config file, used in log messages and
238
D-Bus identifiers
239
fingerprint: string (40 or 32 hexadecimal digits); used to
240
uniquely identify the client
241
secret: bytestring; sent verbatim (over TLS) to client
242
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()
246
last_checked_ok: datetime.datetime(); (UTC) or None
247
timeout: datetime.timedelta(); How long from last_checked_ok
248
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)
395
251
checker: subprocess.Popen(); a running checker process used
396
252
to see if the client lives.
397
253
'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
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
401
259
runtime with vars(self) as dict, so that for
402
260
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
261
current_checker_command: string; current running checker_command
408
disable_initiator_tag: a gobject event source tag, or None
409
enabled: bool()
410
fingerprint: string (40 or 32 hexadecimal digits); used to
411
uniquely identify the client
412
host: string; available for use by the checker command
413
interval: datetime.timedelta(); How often to start a new checker
414
last_approval_request: datetime.datetime(); (UTC) or None
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
423
timeout: datetime.timedelta(); How long from last_checked_ok
424
until this client is disabled
425
extended_timeout: extra long timeout when password 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
429
262
"""
430
263
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
}
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))
445
270
446
271
def timeout_milliseconds(self):
447
272
"Return the 'timeout' attribute in milliseconds"
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)
273
return self._timedelta_to_milliseconds(self.timeout)
453
274
454
275
def interval_milliseconds(self):
455
276
"Return the 'interval' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.interval)
277
return self._timedelta_to_milliseconds(self.interval)
457
278
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):
279
def __init__(self, name = None, disable_hook=None, config=None):
510
280
"""Note: the 'checker' key in 'config' sets the
511
281
'checker_command' attribute and *not* the 'checker'
512
282
attribute."""
513
283
self.name = 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)
284
if config is None:
285
config = {}
286
logger.debug(u"Creating client %r", self.name)
529
287
# Uppercase and remove spaces from fingerprint for later
530
288
# comparison purposes with return value from the fingerprint()
531
289
# function
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
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
537
311
self.checker = None
538
312
self.checker_initiator_tag = None
539
313
self.disable_initiator_tag = None
540
314
self.checker_callback_tag = None
315
self.checker_command = config[u"checker"]
541
316
self.current_checker_command = 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()
317
self.last_connect = None
563
318
564
319
def enable(self):
565
320
"""Start this client's checker and timeout hooks"""
566
if getattr(self, "enabled", False):
321
if getattr(self, u"enabled", False):
567
322
# Already enabled
568
323
return
569
self.send_changedstate()
570
self.expires = datetime.datetime.utcnow() + self.timeout
571
self.enabled = True
572
324
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):
599
325
# Schedule a new checker to be started an 'interval' from now,
600
326
# and every interval from then on.
601
327
self.checker_initiator_tag = (gobject.timeout_add
605
331
self.disable_initiator_tag = (gobject.timeout_add
606
332
(self.timeout_milliseconds(),
607
333
self.disable))
334
self.enabled = True
608
335
# Also start a new checker *right now*.
609
336
self.start_checker()
610
337
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
611
361
def checker_callback(self, pid, condition, command):
612
362
"""The checker has completed, so take appropriate actions."""
613
363
self.checker_callback_tag = None
614
364
self.checker = None
615
365
if os.WIFEXITED(condition):
616
self.last_checker_status = os.WEXITSTATUS(condition)
617
if self.last_checker_status == 0:
618
logger.info("Checker for %(name)s succeeded",
366
exitstatus = os.WEXITSTATUS(condition)
367
if exitstatus == 0:
368
logger.info(u"Checker for %(name)s succeeded",
619
369
vars(self))
620
370
self.checked_ok()
621
371
else:
622
logger.info("Checker for %(name)s failed",
372
logger.info(u"Checker for %(name)s failed",
623
373
vars(self))
624
374
else:
625
self.last_checker_status = -1
626
logger.warning("Checker for %(name)s crashed?",
375
logger.warning(u"Checker for %(name)s crashed?",
627
376
vars(self))
628
377
629
def checked_ok(self, timeout=None):
378
def checked_ok(self):
630
379
"""Bump up the timeout for this client.
631
380
632
381
This should only be called when the client has been seen,
633
382
alive and well.
634
383
"""
635
if timeout is None:
636
timeout = self.timeout
637
384
self.last_checked_ok = datetime.datetime.utcnow()
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()
385
gobject.source_remove(self.disable_initiator_tag)
386
self.disable_initiator_tag = (gobject.timeout_add
387
(self.timeout_milliseconds(),
388
self.disable))
648
389
649
390
def start_checker(self):
650
391
"""Start a new checker subprocess if one is not running.
663
404
# If a checker exists, make sure it is not a zombie
664
405
try:
665
406
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
666
except (AttributeError, OSError) as error:
407
except (AttributeError, OSError), error:
667
408
if (isinstance(error, OSError)
668
409
and error.errno != errno.ECHILD):
669
410
raise error
670
411
else:
671
412
if pid:
672
logger.warning("Checker was a zombie")
413
logger.warning(u"Checker was a zombie")
673
414
gobject.source_remove(self.checker_callback_tag)
674
415
self.checker_callback(pid, status,
675
416
self.current_checker_command)
680
421
command = self.checker_command % self.host
681
422
except TypeError:
682
423
# Escape attributes for the shell
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
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())
691
430
try:
692
431
command = self.checker_command % escaped_attrs
693
except TypeError as error:
694
logger.error('Could not format string "%s":'
695
' %s', self.checker_command, error)
432
except TypeError, error:
433
logger.error(u'Could not format string "%s":'
434
u' %s', self.checker_command, error)
696
435
return True # Try again later
697
436
self.current_checker_command = command
698
437
try:
699
logger.info("Starting checker %r for %s",
438
logger.info(u"Starting checker %r for %s",
700
439
command, self.name)
701
440
# We don't need to redirect stdout and stderr, since
702
441
# in normal mode, that is already done by daemon(),
704
443
# always replaced by /dev/null.)
705
444
self.checker = subprocess.Popen(command,
706
445
close_fds=True,
707
shell=True, cwd="/")
446
shell=True, cwd=u"/")
708
447
self.checker_callback_tag = (gobject.child_watch_add
709
448
(self.checker.pid,
710
449
self.checker_callback,
715
454
if pid:
716
455
gobject.source_remove(self.checker_callback_tag)
717
456
self.checker_callback(pid, status, command)
718
except OSError as error:
719
logger.error("Failed to start subprocess: %s",
457
except OSError, error:
458
logger.error(u"Failed to start subprocess: %s",
720
459
error)
721
460
# Re-run this periodically if run by gobject.timeout_add
722
461
return True
726
465
if self.checker_callback_tag:
727
466
gobject.source_remove(self.checker_callback_tag)
728
467
self.checker_callback_tag = None
729
if getattr(self, "checker", None) is None:
468
if getattr(self, u"checker", None) is None:
730
469
return
731
logger.debug("Stopping checker for %(name)s", vars(self))
470
logger.debug(u"Stopping checker for %(name)s", vars(self))
732
471
try:
733
472
os.kill(self.checker.pid, signal.SIGTERM)
734
473
#time.sleep(0.5)
735
474
#if self.checker.poll() is None:
736
475
# os.kill(self.checker.pid, signal.SIGKILL)
737
except OSError as error:
476
except OSError, error:
738
477
if error.errno != errno.ESRCH: # No such process
739
478
raise
740
479
self.checker = None
741
480
742
481
743
def dbus_service_property(dbus_interface, signature="v",
744
access="readwrite", byte_arrays=False):
482
def dbus_service_property(dbus_interface, signature=u"v",
483
access=u"readwrite", byte_arrays=False):
745
484
"""Decorators for marking methods of a DBusObjectWithProperties to
746
485
become properties on the D-Bus.
747
486
754
493
"""
755
494
# Encoding deeply encoded byte arrays is not supported yet by the
756
495
# "Set" method, so we fail early here:
757
if byte_arrays and signature != "ay":
758
raise ValueError("Byte arrays not supported for non-'ay'"
759
" signature %r" % signature)
496
if byte_arrays and signature != u"ay":
497
raise ValueError(u"Byte arrays not supported for non-'ay'"
498
u" signature %r" % signature)
760
499
def decorator(func):
761
500
func._dbus_is_property = True
762
501
func._dbus_interface = dbus_interface
763
502
func._dbus_signature = signature
764
503
func._dbus_access = access
765
504
func._dbus_name = func.__name__
766
if func._dbus_name.endswith("_dbus_property"):
505
if func._dbus_name.endswith(u"_dbus_property"):
767
506
func._dbus_name = func._dbus_name[:-14]
768
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
507
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
769
508
return func
770
509
return decorator
771
510
791
530
792
531
class DBusObjectWithProperties(dbus.service.Object):
793
532
"""A D-Bus object with properties.
794
533
795
534
Classes inheriting from this can use the dbus_service_property
796
535
decorator to expose methods as D-Bus properties. It exposes the
797
536
standard Get(), Set(), and GetAll() methods on the D-Bus.
799
538
800
539
@staticmethod
801
540
def _is_dbus_property(obj):
802
return getattr(obj, "_dbus_is_property", False)
541
return getattr(obj, u"_dbus_is_property", False)
803
542
804
543
def _get_all_dbus_properties(self):
805
544
"""Returns a generator of (name, attribute) pairs
806
545
"""
807
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
808
for cls in self.__class__.__mro__
546
return ((prop._dbus_name, prop)
809
547
for name, prop in
810
inspect.getmembers(cls, self._is_dbus_property))
548
inspect.getmembers(self, self._is_dbus_property))
811
549
812
550
def _get_dbus_property(self, interface_name, property_name):
813
551
"""Returns a bound method if one exists which is a D-Bus
814
552
property with the specified name and interface.
815
553
"""
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
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
823
564
# No such property
824
raise DBusPropertyNotFound(self.dbus_object_path + ":"
825
+ interface_name + "."
565
raise DBusPropertyNotFound(self.dbus_object_path + u":"
566
+ interface_name + u"."
826
567
+ property_name)
827
568
828
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
829
out_signature="v")
569
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
570
out_signature=u"v")
830
571
def Get(self, interface_name, property_name):
831
572
"""Standard D-Bus property Get() method, see D-Bus standard.
832
573
"""
833
574
prop = self._get_dbus_property(interface_name, property_name)
834
if prop._dbus_access == "write":
575
if prop._dbus_access == u"write":
835
576
raise DBusPropertyAccessException(property_name)
836
577
value = prop()
837
if not hasattr(value, "variant_level"):
578
if not hasattr(value, u"variant_level"):
838
579
return value
839
580
return type(value)(value, variant_level=value.variant_level+1)
840
581
841
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
582
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
842
583
def Set(self, interface_name, property_name, value):
843
584
"""Standard D-Bus property Set() method, see D-Bus standard.
844
585
"""
845
586
prop = self._get_dbus_property(interface_name, property_name)
846
if prop._dbus_access == "read":
587
if prop._dbus_access == u"read":
847
588
raise DBusPropertyAccessException(property_name)
848
if prop._dbus_get_args_options["byte_arrays"]:
589
if prop._dbus_get_args_options[u"byte_arrays"]:
849
590
# The byte_arrays option is not supported yet on
850
591
# signatures other than "ay".
851
if prop._dbus_signature != "ay":
592
if prop._dbus_signature != u"ay":
852
593
raise ValueError
853
value = dbus.ByteArray(b''.join(chr(byte)
854
for byte in value))
594
value = dbus.ByteArray(''.join(unichr(byte)
595
for byte in value))
855
596
prop(value)
856
597
857
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
858
out_signature="a{sv}")
598
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
599
out_signature=u"a{sv}")
859
600
def GetAll(self, interface_name):
860
601
"""Standard D-Bus property GetAll() method, see D-Bus
861
602
standard.
862
603
863
604
Note: Will not include properties with access="write".
864
605
"""
865
properties = {}
606
all = {}
866
607
for name, prop in self._get_all_dbus_properties():
867
608
if (interface_name
868
609
and interface_name != prop._dbus_interface):
869
610
# Interface non-empty but did not match
870
611
continue
871
612
# Ignore write-only properties
872
if prop._dbus_access == "write":
613
if prop._dbus_access == u"write":
873
614
continue
874
615
value = prop()
875
if not hasattr(value, "variant_level"):
876
properties[name] = value
616
if not hasattr(value, u"variant_level"):
617
all[name] = value
877
618
continue
878
properties[name] = type(value)(value, variant_level=
879
value.variant_level+1)
880
return dbus.Dictionary(properties, signature="sv")
619
all[name] = type(value)(value, variant_level=
620
value.variant_level+1)
621
return dbus.Dictionary(all, signature=u"sv")
881
622
882
623
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
883
out_signature="s",
624
out_signature=u"s",
884
625
path_keyword='object_path',
885
626
connection_keyword='connection')
886
627
def Introspect(self, object_path, connection):
891
632
try:
892
633
document = xml.dom.minidom.parseString(xmlstring)
893
634
def make_tag(document, name, prop):
894
e = document.createElement("property")
895
e.setAttribute("name", name)
896
e.setAttribute("type", prop._dbus_signature)
897
e.setAttribute("access", prop._dbus_access)
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)
898
639
return e
899
for if_tag in document.getElementsByTagName("interface"):
640
for if_tag in document.getElementsByTagName(u"interface"):
900
641
for tag in (make_tag(document, name, prop)
901
642
for name, prop
902
643
in self._get_all_dbus_properties()
903
644
if prop._dbus_interface
904
== if_tag.getAttribute("name")):
645
== if_tag.getAttribute(u"name")):
905
646
if_tag.appendChild(tag)
906
647
# Add the names to the return values for the
907
648
# "org.freedesktop.DBus.Properties" methods
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")
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")
922
663
document.unlink()
923
664
except (AttributeError, xml.dom.DOMException,
924
xml.parsers.expat.ExpatError) as error:
925
logger.error("Failed to override Introspection method",
665
xml.parsers.expat.ExpatError), error:
666
logger.error(u"Failed to override Introspection method",
926
667
error)
927
668
return xmlstring
928
669
929
670
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
1036
671
class ClientDBus(Client, DBusObjectWithProperties):
1037
672
"""A Client class using D-Bus
1038
673
1040
675
dbus_object_path: dbus.ObjectPath
1041
676
bus: dbus.SystemBus()
1042
677
"""
1043
1044
runtime_expansions = (Client.runtime_expansions
1045
+ ("dbus_object_path",))
1046
1047
678
# dbus.service.Object doesn't use super(), so we can't either.
1048
679
1049
680
def __init__(self, bus = None, *args, **kwargs):
1050
681
self.bus = bus
1051
682
Client.__init__(self, *args, **kwargs)
1052
self._approvals_pending = 0
1053
1054
self._approvals_pending = 0
1055
683
# Only now, when this client is initialized, can it show up on
1056
684
# the D-Bus
1057
client_object_name = unicode(self.name).translate(
1058
{ord("."): ord("_"),
1059
ord("-"): ord("_")})
1060
685
self.dbus_object_path = (dbus.ObjectPath
1061
("/clients/" + client_object_name))
686
(u"/clients/"
687
+ self.name.replace(u".", u"_")))
1062
688
DBusObjectWithProperties.__init__(self, self.bus,
1063
689
self.dbus_object_path)
1064
1065
def notifychangeproperty(transform_func,
1066
dbus_name, type_func=lambda x: x,
1067
variant_level=1):
1068
""" Modify a variable so that it's a property which announces
1069
its changes to DBus.
1070
1071
transform_fun: Function that takes a value and a variant_level
1072
and transforms it to a D-Bus type.
1073
dbus_name: D-Bus name of the variable
1074
type_func: Function that transform the value before sending it
1075
to the D-Bus. Default: no transform
1076
variant_level: D-Bus variant level. Default: 1
1077
"""
1078
attrname = "_{0}".format(dbus_name)
1079
def setter(self, value):
1080
if hasattr(self, "dbus_object_path"):
1081
if (not hasattr(self, attrname) or
1082
type_func(getattr(self, attrname, None))
1083
!= type_func(value)):
1084
dbus_value = transform_func(type_func(value),
1085
variant_level
1086
=variant_level)
1087
self.PropertyChanged(dbus.String(dbus_name),
1088
dbus_value)
1089
setattr(self, attrname, value)
1090
1091
return property(lambda self: getattr(self, attrname), setter)
1092
1093
1094
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1095
approvals_pending = notifychangeproperty(dbus.Boolean,
1096
"ApprovalPending",
1097
type_func = bool)
1098
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1099
last_enabled = notifychangeproperty(datetime_to_dbus,
1100
"LastEnabled")
1101
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1102
type_func = lambda checker:
1103
checker is not None)
1104
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1105
"LastCheckedOK")
1106
last_approval_request = notifychangeproperty(
1107
datetime_to_dbus, "LastApprovalRequest")
1108
approved_by_default = notifychangeproperty(dbus.Boolean,
1109
"ApprovedByDefault")
1110
approval_delay = notifychangeproperty(dbus.UInt64,
1111
"ApprovalDelay",
1112
type_func =
1113
timedelta_to_milliseconds)
1114
approval_duration = notifychangeproperty(
1115
dbus.UInt64, "ApprovalDuration",
1116
type_func = timedelta_to_milliseconds)
1117
host = notifychangeproperty(dbus.String, "Host")
1118
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1119
type_func =
1120
timedelta_to_milliseconds)
1121
extended_timeout = notifychangeproperty(
1122
dbus.UInt64, "ExtendedTimeout",
1123
type_func = timedelta_to_milliseconds)
1124
interval = notifychangeproperty(dbus.UInt64,
1125
"Interval",
1126
type_func =
1127
timedelta_to_milliseconds)
1128
checker_command = notifychangeproperty(dbus.String, "Checker")
1129
1130
del notifychangeproperty
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
1131
718
1132
719
def __del__(self, *args, **kwargs):
1133
720
try:
1134
721
self.remove_from_connection()
1135
722
except LookupError:
1136
723
pass
1137
if hasattr(DBusObjectWithProperties, "__del__"):
724
if hasattr(DBusObjectWithProperties, u"__del__"):
1138
725
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1139
726
Client.__del__(self, *args, **kwargs)
1140
727
1142
729
*args, **kwargs):
1143
730
self.checker_callback_tag = None
1144
731
self.checker = None
732
# Emit D-Bus signal
733
self.PropertyChanged(dbus.String(u"checker_running"),
734
dbus.Boolean(False, variant_level=1))
1145
735
if os.WIFEXITED(condition):
1146
736
exitstatus = os.WEXITSTATUS(condition)
1147
737
# Emit D-Bus signal
1157
747
return Client.checker_callback(self, pid, condition, command,
1158
748
*args, **kwargs)
1159
749
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
1160
759
def start_checker(self, *args, **kwargs):
1161
760
old_checker = self.checker
1162
761
if self.checker is not None:
1169
768
and old_checker_pid != self.checker.pid):
1170
769
# Emit D-Bus signal
1171
770
self.CheckerStarted(self.current_checker_command)
1172
return r
1173
1174
def _reset_approved(self):
1175
self.approved = None
1176
return False
1177
1178
def approve(self, value=True):
1179
self.send_changedstate()
1180
self.approved = value
1181
gobject.timeout_add(timedelta_to_milliseconds
1182
(self.approval_duration),
1183
self._reset_approved)
1184
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
1185
784
1186
785
## D-Bus methods, signals & properties
1187
_interface = "se.recompile.Mandos.Client"
786
_interface = u"se.bsnet.fukt.Mandos.Client"
1188
787
1189
788
## Signals
1190
789
1191
790
# CheckerCompleted - signal
1192
@dbus.service.signal(_interface, signature="nxs")
791
@dbus.service.signal(_interface, signature=u"nxs")
1193
792
def CheckerCompleted(self, exitcode, waitstatus, command):
1194
793
"D-Bus signal"
1195
794
pass
1196
795
1197
796
# CheckerStarted - signal
1198
@dbus.service.signal(_interface, signature="s")
797
@dbus.service.signal(_interface, signature=u"s")
1199
798
def CheckerStarted(self, command):
1200
799
"D-Bus signal"
1201
800
pass
1202
801
1203
802
# PropertyChanged - signal
1204
@dbus.service.signal(_interface, signature="sv")
803
@dbus.service.signal(_interface, signature=u"sv")
1205
804
def PropertyChanged(self, property, value):
1206
805
"D-Bus signal"
1207
806
pass
1209
808
# GotSecret - signal
1210
809
@dbus.service.signal(_interface)
1211
810
def GotSecret(self):
1212
"""D-Bus signal
1213
Is sent after a successful transfer of secret from the Mandos
1214
server to mandos-client
1215
"""
811
"D-Bus signal"
1216
812
pass
1217
813
1218
814
# Rejected - signal
1219
@dbus.service.signal(_interface, signature="s")
1220
def Rejected(self, reason):
1221
"D-Bus signal"
1222
pass
1223
1224
# NeedApproval - signal
1225
@dbus.service.signal(_interface, signature="tb")
1226
def NeedApproval(self, timeout, default):
1227
"D-Bus signal"
1228
return self.need_approval()
1229
1230
# NeRwequest - signal
1231
@dbus.service.signal(_interface, signature="s")
1232
def NewRequest(self, ip):
1233
"""D-Bus signal
1234
Is sent after a client request a password.
1235
"""
815
@dbus.service.signal(_interface)
816
def Rejected(self):
817
"D-Bus signal"
1236
818
pass
1237
819
1238
820
## Methods
1239
821
1240
# Approve - method
1241
@dbus.service.method(_interface, in_signature="b")
1242
def Approve(self, value):
1243
self.approve(value)
1244
1245
822
# CheckedOK - method
1246
823
@dbus.service.method(_interface)
1247
824
def CheckedOK(self):
1248
self.checked_ok()
825
return self.checked_ok()
1249
826
1250
827
# Enable - method
1251
828
@dbus.service.method(_interface)
1272
849
1273
850
## Properties
1274
851
1275
# ApprovalPending - property
1276
@dbus_service_property(_interface, signature="b", access="read")
1277
def ApprovalPending_dbus_property(self):
1278
return dbus.Boolean(bool(self.approvals_pending))
1279
1280
# ApprovedByDefault - property
1281
@dbus_service_property(_interface, signature="b",
1282
access="readwrite")
1283
def ApprovedByDefault_dbus_property(self, value=None):
1284
if value is None: # get
1285
return dbus.Boolean(self.approved_by_default)
1286
self.approved_by_default = bool(value)
1287
1288
# ApprovalDelay - property
1289
@dbus_service_property(_interface, signature="t",
1290
access="readwrite")
1291
def ApprovalDelay_dbus_property(self, value=None):
1292
if value is None: # get
1293
return dbus.UInt64(self.approval_delay_milliseconds())
1294
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1295
1296
# ApprovalDuration - property
1297
@dbus_service_property(_interface, signature="t",
1298
access="readwrite")
1299
def ApprovalDuration_dbus_property(self, value=None):
1300
if value is None: # get
1301
return dbus.UInt64(timedelta_to_milliseconds(
1302
self.approval_duration))
1303
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1304
1305
# Name - property
1306
@dbus_service_property(_interface, signature="s", access="read")
1307
def Name_dbus_property(self):
852
# name - property
853
@dbus_service_property(_interface, signature=u"s", access=u"read")
854
def name_dbus_property(self):
1308
855
return dbus.String(self.name)
1309
856
1310
# Fingerprint - property
1311
@dbus_service_property(_interface, signature="s", access="read")
1312
def Fingerprint_dbus_property(self):
857
# fingerprint - property
858
@dbus_service_property(_interface, signature=u"s", access=u"read")
859
def fingerprint_dbus_property(self):
1313
860
return dbus.String(self.fingerprint)
1314
861
1315
# Host - property
1316
@dbus_service_property(_interface, signature="s",
1317
access="readwrite")
1318
def Host_dbus_property(self, value=None):
862
# host - property
863
@dbus_service_property(_interface, signature=u"s",
864
access=u"readwrite")
865
def host_dbus_property(self, value=None):
1319
866
if value is None: # get
1320
867
return dbus.String(self.host)
1321
self.host = unicode(value)
1322
1323
# Created - property
1324
@dbus_service_property(_interface, signature="s", access="read")
1325
def Created_dbus_property(self):
1326
return datetime_to_dbus(self.created)
1327
1328
# LastEnabled - property
1329
@dbus_service_property(_interface, signature="s", access="read")
1330
def LastEnabled_dbus_property(self):
1331
return datetime_to_dbus(self.last_enabled)
1332
1333
# Enabled - property
1334
@dbus_service_property(_interface, signature="b",
1335
access="readwrite")
1336
def Enabled_dbus_property(self, value=None):
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):
1337
889
if value is None: # get
1338
890
return dbus.Boolean(self.enabled)
1339
891
if value:
1341
893
else:
1342
894
self.disable()
1343
895
1344
# LastCheckedOK - property
1345
@dbus_service_property(_interface, signature="s",
1346
access="readwrite")
1347
def LastCheckedOK_dbus_property(self, value=None):
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):
1348
900
if value is not None:
1349
901
self.checked_ok()
1350
902
return
1351
return datetime_to_dbus(self.last_checked_ok)
1352
1353
# Expires - property
1354
@dbus_service_property(_interface, signature="s", access="read")
1355
def Expires_dbus_property(self):
1356
return datetime_to_dbus(self.expires)
1357
1358
# LastApprovalRequest - property
1359
@dbus_service_property(_interface, signature="s", access="read")
1360
def LastApprovalRequest_dbus_property(self):
1361
return datetime_to_dbus(self.last_approval_request)
1362
1363
# Timeout - property
1364
@dbus_service_property(_interface, signature="t",
1365
access="readwrite")
1366
def Timeout_dbus_property(self, value=None):
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):
1367
912
if value is None: # get
1368
913
return dbus.UInt64(self.timeout_milliseconds())
1369
914
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
1370
920
# Reschedule timeout
1371
if self.enabled:
1372
now = datetime.datetime.utcnow()
1373
time_to_die = timedelta_to_milliseconds(
1374
(self.last_checked_ok + self.timeout) - now)
1375
if time_to_die <= 0:
1376
# The timeout has passed
1377
self.disable()
1378
else:
1379
self.expires = (now +
1380
datetime.timedelta(milliseconds =
1381
time_to_die))
1382
if (getattr(self, "disable_initiator_tag", None)
1383
is None):
1384
return
1385
gobject.source_remove(self.disable_initiator_tag)
1386
self.disable_initiator_tag = (gobject.timeout_add
1387
(time_to_die,
1388
self.disable))
1389
1390
# ExtendedTimeout - property
1391
@dbus_service_property(_interface, signature="t",
1392
access="readwrite")
1393
def ExtendedTimeout_dbus_property(self, value=None):
1394
if value is None: # get
1395
return dbus.UInt64(self.extended_timeout_milliseconds())
1396
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1397
1398
# Interval - property
1399
@dbus_service_property(_interface, signature="t",
1400
access="readwrite")
1401
def Interval_dbus_property(self, value=None):
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):
1402
940
if value is None: # get
1403
941
return dbus.UInt64(self.interval_milliseconds())
1404
942
self.interval = datetime.timedelta(0, 0, 0, value)
1405
if getattr(self, "checker_initiator_tag", None) is None:
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:
1406
947
return
1407
if self.enabled:
1408
# Reschedule checker run
1409
gobject.source_remove(self.checker_initiator_tag)
1410
self.checker_initiator_tag = (gobject.timeout_add
1411
(value, self.start_checker))
1412
self.start_checker() # Start one now, too
1413
1414
# Checker - property
1415
@dbus_service_property(_interface, signature="s",
1416
access="readwrite")
1417
def Checker_dbus_property(self, value=None):
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):
1418
958
if value is None: # get
1419
959
return dbus.String(self.checker_command)
1420
self.checker_command = unicode(value)
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))
1421
965
1422
# CheckerRunning - property
1423
@dbus_service_property(_interface, signature="b",
1424
access="readwrite")
1425
def CheckerRunning_dbus_property(self, value=None):
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):
1426
970
if value is None: # get
1427
971
return dbus.Boolean(self.checker is not None)
1428
972
if value:
1430
974
else:
1431
975
self.stop_checker()
1432
976
1433
# ObjectPath - property
1434
@dbus_service_property(_interface, signature="o", access="read")
1435
def ObjectPath_dbus_property(self):
977
# object_path - property
978
@dbus_service_property(_interface, signature=u"o", access=u"read")
979
def object_path_dbus_property(self):
1436
980
return self.dbus_object_path # is already a dbus.ObjectPath
1437
981
1438
# Secret = property
1439
@dbus_service_property(_interface, signature="ay",
1440
access="write", byte_arrays=True)
1441
def Secret_dbus_property(self, value):
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):
1442
986
self.secret = str(value)
1443
987
1444
988
del _interface
1445
989
1446
990
1447
class ProxyClient(object):
1448
def __init__(self, child_pipe, fpr, address):
1449
self._pipe = child_pipe
1450
self._pipe.send(('init', fpr, address))
1451
if not self._pipe.recv():
1452
raise KeyError()
1453
1454
def __getattribute__(self, name):
1455
if name == '_pipe':
1456
return super(ProxyClient, self).__getattribute__(name)
1457
self._pipe.send(('getattr', name))
1458
data = self._pipe.recv()
1459
if data[0] == 'data':
1460
return data[1]
1461
if data[0] == 'function':
1462
def func(*args, **kwargs):
1463
self._pipe.send(('funcall', name, args, kwargs))
1464
return self._pipe.recv()[1]
1465
return func
1466
1467
def __setattr__(self, name, value):
1468
if name == '_pipe':
1469
return super(ProxyClient, self).__setattr__(name, value)
1470
self._pipe.send(('setattr', name, value))
1471
1472
1473
class ClientDBusTransitional(ClientDBus):
1474
__metaclass__ = AlternateDBusNamesMetaclass
1475
1476
1477
991
class ClientHandler(socketserver.BaseRequestHandler, object):
1478
992
"""A class to handle client connections.
1479
993
1481
995
Note: This will run in its own forked process."""
1482
996
1483
997
def handle(self):
1484
with contextlib.closing(self.server.child_pipe) as child_pipe:
1485
logger.info("TCP connection from: %s",
1486
unicode(self.client_address))
1487
logger.debug("Pipe FD: %d",
1488
self.server.child_pipe.fileno())
1489
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):
1490
1006
session = (gnutls.connection
1491
1007
.ClientSession(self.request,
1492
1008
gnutls.connection
1497
1013
# no X.509 keys are added to it. Therefore, we can use it
1498
1014
# here despite using OpenPGP certificates.
1499
1015
1500
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1501
# "+AES-256-CBC", "+SHA1",
1502
# "+COMP-NULL", "+CTYPE-OPENPGP",
1503
# "+DHE-DSS"))
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"))
1504
1020
# Use a fallback default, since this MUST be set.
1505
1021
priority = self.server.gnutls_priority
1506
1022
if priority is None:
1507
priority = "NORMAL"
1023
priority = u"NORMAL"
1508
1024
(gnutls.library.functions
1509
1025
.gnutls_priority_set_direct(session._c_object,
1510
1026
priority, None))
1512
1028
# Start communication using the Mandos protocol
1513
1029
# Get protocol number
1514
1030
line = self.request.makefile().readline()
1515
logger.debug("Protocol version: %r", line)
1031
logger.debug(u"Protocol version: %r", line)
1516
1032
try:
1517
1033
if int(line.strip().split()[0]) > 1:
1518
1034
raise RuntimeError
1519
except (ValueError, IndexError, RuntimeError) as error:
1520
logger.error("Unknown protocol version: %s", error)
1035
except (ValueError, IndexError, RuntimeError), error:
1036
logger.error(u"Unknown protocol version: %s", error)
1521
1037
return
1522
1038
1523
1039
# Start GnuTLS connection
1524
1040
try:
1525
1041
session.handshake()
1526
except gnutls.errors.GNUTLSError as error:
1527
logger.warning("Handshake failed: %s", error)
1042
except gnutls.errors.GNUTLSError, error:
1043
logger.warning(u"Handshake failed: %s", error)
1528
1044
# Do not run session.bye() here: the session is not
1529
1045
# established. Just abandon the request.
1530
1046
return
1531
logger.debug("Handshake succeeded")
1532
1533
approval_required = False
1047
logger.debug(u"Handshake succeeded")
1534
1048
try:
1535
1049
try:
1536
1050
fpr = self.fingerprint(self.peer_certificate
1537
1051
(session))
1538
except (TypeError,
1539
gnutls.errors.GNUTLSError) as error:
1540
logger.warning("Bad certificate: %s", error)
1541
return
1542
logger.debug("Fingerprint: %s", fpr)
1543
1544
try:
1545
client = ProxyClient(child_pipe, fpr,
1546
self.client_address)
1547
except KeyError:
1548
return
1549
1550
if self.server.use_dbus:
1551
# Emit D-Bus signal
1552
client.NewRequest(str(self.client_address))
1553
1554
if client.approval_delay:
1555
delay = client.approval_delay
1556
client.approvals_pending += 1
1557
approval_required = True
1558
1559
while True:
1560
if not client.enabled:
1561
logger.info("Client %s is disabled",
1562
client.name)
1563
if self.server.use_dbus:
1564
# Emit D-Bus signal
1565
client.Rejected("Disabled")
1566
return
1567
1568
if client.approved or not client.approval_delay:
1569
#We are approved or approval is disabled
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
1570
1060
break
1571
elif client.approved is None:
1572
logger.info("Client %s needs approval",
1573
client.name)
1574
if self.server.use_dbus:
1575
# Emit D-Bus signal
1576
client.NeedApproval(
1577
client.approval_delay_milliseconds(),
1578
client.approved_by_default)
1579
else:
1580
logger.warning("Client %s was not approved",
1581
client.name)
1582
if self.server.use_dbus:
1583
# Emit D-Bus signal
1584
client.Rejected("Denied")
1585
return
1586
1587
#wait until timeout or approved
1588
time = datetime.datetime.now()
1589
client.changedstate.acquire()
1590
(client.changedstate.wait
1591
(float(client.timedelta_to_milliseconds(delay)
1592
/ 1000)))
1593
client.changedstate.release()
1594
time2 = datetime.datetime.now()
1595
if (time2 - time) >= delay:
1596
if not client.approved_by_default:
1597
logger.warning("Client %s timed out while"
1598
" waiting for approval",
1599
client.name)
1600
if self.server.use_dbus:
1601
# Emit D-Bus signal
1602
client.Rejected("Approval timed out")
1603
return
1604
else:
1605
break
1606
else:
1607
delay -= time2 - time
1608
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()
1609
1090
sent_size = 0
1610
1091
while sent_size < len(client.secret):
1611
try:
1612
sent = session.send(client.secret[sent_size:])
1613
except gnutls.errors.GNUTLSError as error:
1614
logger.warning("gnutls send failed")
1615
return
1616
logger.debug("Sent: %d, remaining: %d",
1092
sent = session.send(client.secret[sent_size:])
1093
logger.debug(u"Sent: %d, remaining: %d",
1617
1094
sent, len(client.secret)
1618
1095
- (sent_size + sent))
1619
1096
sent_size += sent
1620
1621
logger.info("Sending secret to %s", client.name)
1622
# bump the timeout using extended_timeout
1623
client.checked_ok(client.extended_timeout)
1624
if self.server.use_dbus:
1625
# Emit D-Bus signal
1626
client.GotSecret()
1627
1628
1097
finally:
1629
if approval_required:
1630
client.approvals_pending -= 1
1631
try:
1632
session.bye()
1633
except gnutls.errors.GNUTLSError as error:
1634
logger.warning("GnuTLS bye failed")
1098
session.bye()
1635
1099
1636
1100
@staticmethod
1637
1101
def peer_certificate(session):
1647
1111
.gnutls_certificate_get_peers
1648
1112
(session._c_object, ctypes.byref(list_size)))
1649
1113
if not bool(cert_list) and list_size.value != 0:
1650
raise gnutls.errors.GNUTLSError("error getting peer"
1651
" certificate")
1114
raise gnutls.errors.GNUTLSError(u"error getting peer"
1115
u" certificate")
1652
1116
if list_size.value == 0:
1653
1117
return None
1654
1118
cert = cert_list[0]
1680
1144
if crtverify.value != 0:
1681
1145
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1682
1146
raise (gnutls.errors.CertificateSecurityError
1683
("Verify failed"))
1147
(u"Verify failed"))
1684
1148
# New buffer for the fingerprint
1685
1149
buf = ctypes.create_string_buffer(20)
1686
1150
buf_len = ctypes.c_size_t()
1693
1157
# Convert the buffer to a Python bytestring
1694
1158
fpr = ctypes.string_at(buf, buf_len.value)
1695
1159
# Convert the bytestring to hexadecimal notation
1696
hex_fpr = binascii.hexlify(fpr).upper()
1160
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1697
1161
return hex_fpr
1698
1162
1699
1163
1700
class MultiprocessingMixIn(object):
1701
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1702
def sub_process_main(self, request, address):
1703
try:
1704
self.finish_request(request, address)
1705
except Exception:
1706
self.handle_error(request, address)
1707
self.close_request(request)
1708
1709
def process_request(self, request, address):
1710
"""Start a new process to process the request."""
1711
proc = multiprocessing.Process(target = self.sub_process_main,
1712
args = (request,
1713
address))
1714
proc.start()
1715
return proc
1716
1717
1718
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1719
""" adds a pipe to the MixIn """
1164
class ForkingMixInWithPipes(socketserver.ForkingMixIn, object):
1165
"""Like socketserver.ForkingMixIn, but also pass a pipe pair."""
1720
1166
def process_request(self, request, client_address):
1721
1167
"""Overrides and wraps the original process_request().
1722
1168
1723
1169
This function creates a new pipe in self.pipe
1724
1170
"""
1725
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1726
1727
proc = MultiprocessingMixIn.process_request(self, request,
1728
client_address)
1729
self.child_pipe.close()
1730
self.add_pipe(parent_pipe, proc)
1731
1732
def add_pipe(self, parent_pipe, proc):
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):
1733
1182
"""Dummy function; override as necessary"""
1734
raise NotImplementedError
1735
1736
1737
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1183
child_pipe_fd.close()
1184
parent_pipe_fd.close()
1185
1186
1187
class IPv6_TCPServer(ForkingMixInWithPipes,
1738
1188
socketserver.TCPServer, object):
1739
1189
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1740
1190
1756
1206
bind to an address or port if they were not specified."""
1757
1207
if self.interface is not None:
1758
1208
if SO_BINDTODEVICE is None:
1759
logger.error("SO_BINDTODEVICE does not exist;"
1760
" cannot bind to interface %s",
1209
logger.error(u"SO_BINDTODEVICE does not exist;"
1210
u" cannot bind to interface %s",
1761
1211
self.interface)
1762
1212
else:
1763
1213
try:
1764
1214
self.socket.setsockopt(socket.SOL_SOCKET,
1765
1215
SO_BINDTODEVICE,
1766
1216
str(self.interface
1767
+ '\0'))
1768
except socket.error as error:
1217
+ u'\0'))
1218
except socket.error, error:
1769
1219
if error[0] == errno.EPERM:
1770
logger.error("No permission to"
1771
" bind to interface %s",
1220
logger.error(u"No permission to"
1221
u" bind to interface %s",
1772
1222
self.interface)
1773
1223
elif error[0] == errno.ENOPROTOOPT:
1774
logger.error("SO_BINDTODEVICE not available;"
1775
" cannot bind to interface %s",
1224
logger.error(u"SO_BINDTODEVICE not available;"
1225
u" cannot bind to interface %s",
1776
1226
self.interface)
1777
1227
else:
1778
1228
raise
1780
1230
if self.server_address[0] or self.server_address[1]:
1781
1231
if not self.server_address[0]:
1782
1232
if self.address_family == socket.AF_INET6:
1783
any_address = "::" # in6addr_any
1233
any_address = u"::" # in6addr_any
1784
1234
else:
1785
1235
any_address = socket.INADDR_ANY
1786
1236
self.server_address = (any_address,
1813
1263
self.enabled = False
1814
1264
self.clients = clients
1815
1265
if self.clients is None:
1816
self.clients = {}
1266
self.clients = set()
1817
1267
self.use_dbus = use_dbus
1818
1268
self.gnutls_priority = gnutls_priority
1819
1269
IPv6_TCPServer.__init__(self, server_address,
1823
1273
def server_activate(self):
1824
1274
if self.enabled:
1825
1275
return socketserver.TCPServer.server_activate(self)
1826
1827
1276
def enable(self):
1828
1277
self.enabled = True
1829
1830
def add_pipe(self, parent_pipe, proc):
1278
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
1831
1279
# Call "handle_ipc" for both data and EOF events
1832
gobject.io_add_watch(parent_pipe.fileno(),
1280
gobject.io_add_watch(child_pipe_fd.fileno(),
1833
1281
gobject.IO_IN | gobject.IO_HUP,
1834
1282
functools.partial(self.handle_ipc,
1835
parent_pipe =
1836
parent_pipe,
1837
proc = proc))
1838
1839
def handle_ipc(self, source, condition, parent_pipe=None,
1840
proc = None, client_object=None):
1283
reply = parent_pipe_fd,
1284
sender= child_pipe_fd))
1285
def handle_ipc(self, source, condition, reply=None, sender=None):
1841
1286
condition_names = {
1842
gobject.IO_IN: "IN", # There is data to read.
1843
gobject.IO_OUT: "OUT", # Data can be written (without
1287
gobject.IO_IN: u"IN", # There is data to read.
1288
gobject.IO_OUT: u"OUT", # Data can be written (without
1844
1289
# blocking).
1845
gobject.IO_PRI: "PRI", # There is urgent data to read.
1846
gobject.IO_ERR: "ERR", # Error condition.
1847
gobject.IO_HUP: "HUP" # Hung up (the connection has been
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
1848
1293
# broken, usually for pipes and
1849
1294
# sockets).
1850
1295
}
1852
1297
for cond, name in
1853
1298
condition_names.iteritems()
1854
1299
if cond & condition)
1855
# error, or the other end of multiprocessing.Pipe has closed
1856
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1857
# Wait for other process to exit
1858
proc.join()
1859
return False
1860
1861
# Read a request from the child
1862
request = parent_pipe.recv()
1863
command = request[0]
1864
1865
if command == 'init':
1866
fpr = request[1]
1867
address = request[2]
1868
1869
for c in self.clients.itervalues():
1870
if c.fingerprint == fpr:
1871
client = c
1872
break
1873
else:
1874
logger.info("Client not found for fingerprint: %s, ad"
1875
"dress: %s", fpr, address)
1876
if self.use_dbus:
1877
# Emit D-Bus signal
1878
mandos_dbus_service.ClientNotFound(fpr,
1879
address[0])
1880
parent_pipe.send(False)
1881
return False
1882
1883
gobject.io_add_watch(parent_pipe.fileno(),
1884
gobject.IO_IN | gobject.IO_HUP,
1885
functools.partial(self.handle_ipc,
1886
parent_pipe =
1887
parent_pipe,
1888
proc = proc,
1889
client_object =
1890
client))
1891
parent_pipe.send(True)
1892
# remove the old hook in favor of the new above hook on
1893
# same fileno
1894
return False
1895
if command == 'funcall':
1896
funcname = request[1]
1897
args = request[2]
1898
kwargs = request[3]
1899
1900
parent_pipe.send(('data', getattr(client_object,
1901
funcname)(*args,
1902
**kwargs)))
1903
1904
if command == 'getattr':
1905
attrname = request[1]
1906
if callable(client_object.__getattribute__(attrname)):
1907
parent_pipe.send(('function',))
1908
else:
1909
parent_pipe.send(('data', client_object
1910
.__getattribute__(attrname)))
1911
1912
if command == 'setattr':
1913
attrname = request[1]
1914
value = request[2]
1915
setattr(client_object, attrname, value)
1916
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
1917
1364
return True
1918
1365
1919
1366
1920
1367
def string_to_delta(interval):
1921
1368
"""Parse a string and return a datetime.timedelta
1922
1369
1923
>>> string_to_delta('7d')
1370
>>> string_to_delta(u'7d')
1924
1371
datetime.timedelta(7)
1925
>>> string_to_delta('60s')
1372
>>> string_to_delta(u'60s')
1926
1373
datetime.timedelta(0, 60)
1927
>>> string_to_delta('60m')
1374
>>> string_to_delta(u'60m')
1928
1375
datetime.timedelta(0, 3600)
1929
>>> string_to_delta('24h')
1376
>>> string_to_delta(u'24h')
1930
1377
datetime.timedelta(1)
1931
>>> string_to_delta('1w')
1378
>>> string_to_delta(u'1w')
1932
1379
datetime.timedelta(7)
1933
>>> string_to_delta('5m 30s')
1380
>>> string_to_delta(u'5m 30s')
1934
1381
datetime.timedelta(0, 330)
1935
1382
"""
1936
1383
timevalue = datetime.timedelta(0)
1938
1385
try:
1939
1386
suffix = unicode(s[-1])
1940
1387
value = int(s[:-1])
1941
if suffix == "d":
1388
if suffix == u"d":
1942
1389
delta = datetime.timedelta(value)
1943
elif suffix == "s":
1390
elif suffix == u"s":
1944
1391
delta = datetime.timedelta(0, value)
1945
elif suffix == "m":
1392
elif suffix == u"m":
1946
1393
delta = datetime.timedelta(0, 0, 0, 0, value)
1947
elif suffix == "h":
1394
elif suffix == u"h":
1948
1395
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1949
elif suffix == "w":
1396
elif suffix == u"w":
1950
1397
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1951
1398
else:
1952
raise ValueError("Unknown suffix %r" % suffix)
1953
except (ValueError, IndexError) as e:
1954
raise ValueError(*(e.args))
1399
raise ValueError(u"Unknown suffix %r" % suffix)
1400
except (ValueError, IndexError), e:
1401
raise ValueError(e.message)
1955
1402
timevalue += delta
1956
1403
return timevalue
1957
1404
1958
1405
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
1959
1430
def daemon(nochdir = False, noclose = False):
1960
1431
"""See daemon(3). Standard BSD Unix function.
1961
1432
1964
1435
sys.exit()
1965
1436
os.setsid()
1966
1437
if not nochdir:
1967
os.chdir("/")
1438
os.chdir(u"/")
1968
1439
if os.fork():
1969
1440
sys.exit()
1970
1441
if not noclose:
1972
1443
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1973
1444
if not stat.S_ISCHR(os.fstat(null).st_mode):
1974
1445
raise OSError(errno.ENODEV,
1975
"%s not a character device"
1446
u"%s not a character device"
1976
1447
% os.path.devnull)
1977
1448
os.dup2(null, sys.stdin.fileno())
1978
1449
os.dup2(null, sys.stdout.fileno())
1986
1457
##################################################################
1987
1458
# Parsing of options, both command line and config file
1988
1459
1989
parser = argparse.ArgumentParser()
1990
parser.add_argument("-v", "--version", action="version",
1991
version = "%%(prog)s %s" % version,
1992
help="show version number and exit")
1993
parser.add_argument("-i", "--interface", metavar="IF",
1994
help="Bind to interface IF")
1995
parser.add_argument("-a", "--address",
1996
help="Address to listen for requests on")
1997
parser.add_argument("-p", "--port", type=int,
1998
help="Port number to receive requests on")
1999
parser.add_argument("--check", action="store_true",
2000
help="Run self-test")
2001
parser.add_argument("--debug", action="store_true",
2002
help="Debug mode; run in foreground and log"
2003
" to terminal")
2004
parser.add_argument("--debuglevel", metavar="LEVEL",
2005
help="Debug level for stdout output")
2006
parser.add_argument("--priority", help="GnuTLS"
2007
" priority string (see GnuTLS documentation)")
2008
parser.add_argument("--servicename",
2009
metavar="NAME", help="Zeroconf service name")
2010
parser.add_argument("--configdir",
2011
default="/etc/mandos", metavar="DIR",
2012
help="Directory to search for configuration"
2013
" files")
2014
parser.add_argument("--no-dbus", action="store_false",
2015
dest="use_dbus", help="Do not provide D-Bus"
2016
" system bus interface")
2017
parser.add_argument("--no-ipv6", action="store_false",
2018
dest="use_ipv6", help="Do not use IPv6")
2019
parser.add_argument("--no-restore", action="store_false",
2020
dest="restore", help="Do not restore stored"
2021
" state")
2022
parser.add_argument("--statedir", metavar="DIR",
2023
help="Directory to save/restore state in")
2024
2025
options = parser.parse_args()
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]
2026
1486
2027
1487
if options.check:
2028
1488
import doctest
2030
1490
sys.exit()
2031
1491
2032
1492
# Default values for config file for server-global settings
2033
server_defaults = { "interface": "",
2034
"address": "",
2035
"port": "",
2036
"debug": "False",
2037
"priority":
2038
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2039
"servicename": "Mandos",
2040
"use_dbus": "True",
2041
"use_ipv6": "True",
2042
"debuglevel": "",
2043
"restore": "True",
2044
"statedir": "/var/lib/mandos"
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",
2045
1502
}
2046
1503
2047
1504
# Parse config file for server-global settings
2048
1505
server_config = configparser.SafeConfigParser(server_defaults)
2049
1506
del server_defaults
2050
1507
server_config.read(os.path.join(options.configdir,
2051
"mandos.conf"))
1508
u"mandos.conf"))
2052
1509
# Convert the SafeConfigParser object to a dict
2053
1510
server_settings = server_config.defaults()
2054
1511
# Use the appropriate methods on the non-string config options
2055
for option in ("debug", "use_dbus", "use_ipv6"):
2056
server_settings[option] = server_config.getboolean("DEFAULT",
1512
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1513
server_settings[option] = server_config.getboolean(u"DEFAULT",
2057
1514
option)
2058
1515
if server_settings["port"]:
2059
server_settings["port"] = server_config.getint("DEFAULT",
2060
"port")
1516
server_settings["port"] = server_config.getint(u"DEFAULT",
1517
u"port")
2061
1518
del server_config
2062
1519
2063
1520
# Override the settings from the config file with command line
2064
1521
# options, if set.
2065
for option in ("interface", "address", "port", "debug",
2066
"priority", "servicename", "configdir",
2067
"use_dbus", "use_ipv6", "debuglevel", "restore",
2068
"statedir"):
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"):
2069
1525
value = getattr(options, option)
2070
1526
if value is not None:
2071
1527
server_settings[option] = value
2079
1535
##################################################################
2080
1536
2081
1537
# For convenience
2082
debug = server_settings["debug"]
2083
debuglevel = server_settings["debuglevel"]
2084
use_dbus = server_settings["use_dbus"]
2085
use_ipv6 = server_settings["use_ipv6"]
2086
stored_state_path = os.path.join(server_settings["statedir"],
2087
stored_state_file)
2088
2089
if debug:
2090
initlogger(debug, logging.DEBUG)
2091
else:
2092
if not debuglevel:
2093
initlogger(debug)
2094
else:
2095
level = getattr(logging, debuglevel.upper())
2096
initlogger(debug, level)
2097
2098
if server_settings["servicename"] != "Mandos":
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":
2099
1547
syslogger.setFormatter(logging.Formatter
2100
('Mandos (%s) [%%(process)d]:'
2101
' %%(levelname)s: %%(message)s'
2102
% server_settings["servicename"]))
1548
(u'Mandos (%s) [%%(process)d]:'
1549
u' %%(levelname)s: %%(message)s'
1550
% server_settings[u"servicename"]))
2103
1551
2104
1552
# Parse config file with clients
2105
client_config = configparser.SafeConfigParser(Client
2106
.client_defaults)
2107
client_config.read(os.path.join(server_settings["configdir"],
2108
"clients.conf"))
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"))
2109
1561
2110
1562
global mandos_dbus_service
2111
1563
mandos_dbus_service = None
2112
1564
2113
tcp_server = MandosServer((server_settings["address"],
2114
server_settings["port"]),
1565
tcp_server = MandosServer((server_settings[u"address"],
1566
server_settings[u"port"]),
2115
1567
ClientHandler,
2116
interface=(server_settings["interface"]
1568
interface=(server_settings[u"interface"]
2117
1569
or None),
2118
1570
use_ipv6=use_ipv6,
2119
1571
gnutls_priority=
2120
server_settings["priority"],
1572
server_settings[u"priority"],
2121
1573
use_dbus=use_dbus)
2122
if not debug:
2123
pidfilename = "/var/run/mandos.pid"
2124
try:
2125
pidfile = open(pidfilename, "w")
2126
except IOError:
2127
logger.error("Could not open file %r", pidfilename)
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)
2128
1579
2129
1580
try:
2130
uid = pwd.getpwnam("_mandos").pw_uid
2131
gid = pwd.getpwnam("_mandos").pw_gid
1581
uid = pwd.getpwnam(u"_mandos").pw_uid
1582
gid = pwd.getpwnam(u"_mandos").pw_gid
2132
1583
except KeyError:
2133
1584
try:
2134
uid = pwd.getpwnam("mandos").pw_uid
2135
gid = pwd.getpwnam("mandos").pw_gid
1585
uid = pwd.getpwnam(u"mandos").pw_uid
1586
gid = pwd.getpwnam(u"mandos").pw_gid
2136
1587
except KeyError:
2137
1588
try:
2138
uid = pwd.getpwnam("nobody").pw_uid
2139
gid = pwd.getpwnam("nobody").pw_gid
1589
uid = pwd.getpwnam(u"nobody").pw_uid
1590
gid = pwd.getpwnam(u"nobody").pw_gid
2140
1591
except KeyError:
2141
1592
uid = 65534
2142
1593
gid = 65534
2143
1594
try:
2144
1595
os.setgid(gid)
2145
1596
os.setuid(uid)
2146
except OSError as error:
1597
except OSError, error:
2147
1598
if error[0] != errno.EPERM:
2148
1599
raise error
2149
1600
1601
# Enable all possible GnuTLS debugging
2150
1602
if debug:
2151
# Enable all possible GnuTLS debugging
2152
2153
1603
# "Use a log level over 10 to enable all debugging options."
2154
1604
# - GnuTLS manual
2155
1605
gnutls.library.functions.gnutls_global_set_log_level(11)
2156
1606
2157
1607
@gnutls.library.types.gnutls_log_func
2158
1608
def debug_gnutls(level, string):
2159
logger.debug("GnuTLS: %s", string[:-1])
1609
logger.debug(u"GnuTLS: %s", string[:-1])
2160
1610
2161
1611
(gnutls.library.functions
2162
1612
.gnutls_global_set_log_function(debug_gnutls))
2163
2164
# Redirect stdin so all checkers get /dev/null
2165
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2166
os.dup2(null, sys.stdin.fileno())
2167
if null > 2:
2168
os.close(null)
2169
2170
# Need to fork before connecting to D-Bus
2171
if not debug:
2172
# Close all input and output, do double fork, etc.
2173
daemon()
2174
2175
gobject.threads_init()
2176
1613
2177
1614
global main_loop
2178
1615
# From the Avahi example code
2182
1619
# End of Avahi example code
2183
1620
if use_dbus:
2184
1621
try:
2185
bus_name = dbus.service.BusName("se.recompile.Mandos",
1622
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2186
1623
bus, do_not_queue=True)
2187
old_bus_name = (dbus.service.BusName
2188
("se.bsnet.fukt.Mandos", bus,
2189
do_not_queue=True))
2190
except dbus.exceptions.NameExistsException as e:
2191
logger.error(unicode(e) + ", disabling D-Bus")
1624
except dbus.exceptions.NameExistsException, e:
1625
logger.error(unicode(e) + u", disabling D-Bus")
2192
1626
use_dbus = False
2193
server_settings["use_dbus"] = False
1627
server_settings[u"use_dbus"] = False
2194
1628
tcp_server.use_dbus = False
2195
1629
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2196
service = AvahiServiceToSyslog(name =
2197
server_settings["servicename"],
2198
servicetype = "_mandos._tcp",
2199
protocol = protocol, bus = bus)
1630
service = AvahiService(name = server_settings[u"servicename"],
1631
servicetype = u"_mandos._tcp",
1632
protocol = protocol, bus = bus)
2200
1633
if server_settings["interface"]:
2201
1634
service.interface = (if_nametoindex
2202
(str(server_settings["interface"])))
2203
2204
global multiprocessing_manager
2205
multiprocessing_manager = multiprocessing.Manager()
1635
(str(server_settings[u"interface"])))
2206
1636
2207
1637
client_class = Client
2208
1638
if use_dbus:
2209
client_class = functools.partial(ClientDBusTransitional,
2210
bus = bus)
2211
2212
client_settings = Client.config_parser(client_config)
2213
old_client_settings = {}
2214
clients_data = {}
2215
2216
# Get client data and settings from last running state.
2217
if server_settings["restore"]:
2218
try:
2219
with open(stored_state_path, "rb") as stored_state:
2220
clients_data, old_client_settings = (pickle.load
2221
(stored_state))
2222
os.remove(stored_state_path)
2223
except IOError as e:
2224
logger.warning("Could not load persistent state: {0}"
2225
.format(e))
2226
if e.errno != errno.ENOENT:
2227
raise
2228
except EOFError as e:
2229
logger.warning("Could not load persistent state: "
2230
"EOFError: {0}".format(e))
2231
2232
with PGPEngine() as pgp:
2233
for client_name, client in clients_data.iteritems():
2234
# Decide which value to use after restoring saved state.
2235
# We have three different values: Old config file,
2236
# new config file, and saved state.
2237
# New config value takes precedence if it differs from old
2238
# config value, otherwise use saved state.
2239
for name, value in client_settings[client_name].items():
2240
try:
2241
# For each value in new config, check if it
2242
# differs from the old config value (Except for
2243
# the "secret" attribute)
2244
if (name != "secret" and
2245
value != old_client_settings[client_name]
2246
[name]):
2247
client[name] = value
2248
except KeyError:
2249
pass
2250
2251
# Clients who has passed its expire date can still be
2252
# enabled if its last checker was successful. Clients
2253
# whose checker failed before we stored its state is
2254
# assumed to have failed all checkers during downtime.
2255
if client["enabled"]:
2256
if datetime.datetime.utcnow() >= client["expires"]:
2257
if not client["last_checked_ok"]:
2258
logger.warning(
2259
"disabling client {0} - Client never "
2260
"performed a successfull checker"
2261
.format(client["name"]))
2262
client["enabled"] = False
2263
elif client["last_checker_status"] != 0:
2264
logger.warning(
2265
"disabling client {0} - Client "
2266
"last checker failed with error code {1}"
2267
.format(client["name"],
2268
client["last_checker_status"]))
2269
client["enabled"] = False
2270
else:
2271
client["expires"] = (datetime.datetime
2272
.utcnow()
2273
+ client["timeout"])
2274
logger.debug("Last checker succeeded,"
2275
" keeping {0} enabled"
2276
.format(client["name"]))
2277
try:
2278
client["secret"] = (
2279
pgp.decrypt(client["encrypted_secret"],
2280
client_settings[client_name]
2281
["secret"]))
2282
except PGPError:
2283
# If decryption fails, we use secret from new settings
2284
logger.debug("Failed to decrypt {0} old secret"
2285
.format(client_name))
2286
client["secret"] = (
2287
client_settings[client_name]["secret"])
2288
2289
2290
# Add/remove clients based on new changes made to config
2291
for client_name in (set(old_client_settings)
2292
- set(client_settings)):
2293
del clients_data[client_name]
2294
for client_name in (set(client_settings)
2295
- set(old_client_settings)):
2296
clients_data[client_name] = client_settings[client_name]
2297
2298
# Create clients all clients
2299
for client_name, client in clients_data.iteritems():
2300
tcp_server.clients[client_name] = client_class(
2301
name = client_name, settings = client)
2302
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()))
2303
1644
if not tcp_server.clients:
2304
logger.warning("No clients defined")
2305
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
2306
1672
if not debug:
2307
try:
2308
with pidfile:
2309
pid = os.getpid()
2310
pidfile.write(str(pid) + "\n".encode("utf-8"))
2311
del pidfile
2312
except IOError:
2313
logger.error("Could not write to file %r with PID %d",
2314
pidfilename, pid)
2315
except NameError:
2316
# "pidfile" was never created
2317
pass
2318
del pidfilename
2319
1673
signal.signal(signal.SIGINT, signal.SIG_IGN)
2320
2321
1674
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2322
1675
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2323
1676
2325
1678
class MandosDBusService(dbus.service.Object):
2326
1679
"""A D-Bus proxy object"""
2327
1680
def __init__(self):
2328
dbus.service.Object.__init__(self, bus, "/")
2329
_interface = "se.recompile.Mandos"
1681
dbus.service.Object.__init__(self, bus, u"/")
1682
_interface = u"se.bsnet.fukt.Mandos"
2330
1683
2331
@dbus.service.signal(_interface, signature="o")
1684
@dbus.service.signal(_interface, signature=u"o")
2332
1685
def ClientAdded(self, objpath):
2333
1686
"D-Bus signal"
2334
1687
pass
2335
1688
2336
@dbus.service.signal(_interface, signature="ss")
1689
@dbus.service.signal(_interface, signature=u"ss")
2337
1690
def ClientNotFound(self, fingerprint, address):
2338
1691
"D-Bus signal"
2339
1692
pass
2340
1693
2341
@dbus.service.signal(_interface, signature="os")
1694
@dbus.service.signal(_interface, signature=u"os")
2342
1695
def ClientRemoved(self, objpath, name):
2343
1696
"D-Bus signal"
2344
1697
pass
2345
1698
2346
@dbus.service.method(_interface, out_signature="ao")
1699
@dbus.service.method(_interface, out_signature=u"ao")
2347
1700
def GetAllClients(self):
2348
1701
"D-Bus method"
2349
1702
return dbus.Array(c.dbus_object_path
2350
for c in
2351
tcp_server.clients.itervalues())
1703
for c in tcp_server.clients)
2352
1704
2353
1705
@dbus.service.method(_interface,
2354
out_signature="a{oa{sv}}")
1706
out_signature=u"a{oa{sv}}")
2355
1707
def GetAllClientsWithProperties(self):
2356
1708
"D-Bus method"
2357
1709
return dbus.Dictionary(
2358
((c.dbus_object_path, c.GetAll(""))
2359
for c in tcp_server.clients.itervalues()),
2360
signature="oa{sv}")
1710
((c.dbus_object_path, c.GetAll(u""))
1711
for c in tcp_server.clients),
1712
signature=u"oa{sv}")
2361
1713
2362
@dbus.service.method(_interface, in_signature="o")
1714
@dbus.service.method(_interface, in_signature=u"o")
2363
1715
def RemoveClient(self, object_path):
2364
1716
"D-Bus method"
2365
for c in tcp_server.clients.itervalues():
1717
for c in tcp_server.clients:
2366
1718
if c.dbus_object_path == object_path:
2367
del tcp_server.clients[c.name]
1719
tcp_server.clients.remove(c)
2368
1720
c.remove_from_connection()
2369
1721
# Don't signal anything except ClientRemoved
2370
1722
c.disable(quiet=True)
2375
1727
2376
1728
del _interface
2377
1729
2378
class MandosDBusServiceTransitional(MandosDBusService):
2379
__metaclass__ = AlternateDBusNamesMetaclass
2380
mandos_dbus_service = MandosDBusServiceTransitional()
1730
mandos_dbus_service = MandosDBusService()
2381
1731
2382
1732
def cleanup():
2383
1733
"Cleanup function; run on exit"
2384
1734
service.cleanup()
2385
1735
2386
multiprocessing.active_children()
2387
if not (tcp_server.clients or client_settings):
2388
return
2389
2390
# Store client before exiting. Secrets are encrypted with key
2391
# based on what config file has. If config file is
2392
# removed/edited, old secret will thus be unrecovable.
2393
clients = {}
2394
with PGPEngine() as pgp:
2395
for client in tcp_server.clients.itervalues():
2396
key = client_settings[client.name]["secret"]
2397
client.encrypted_secret = pgp.encrypt(client.secret,
2398
key)
2399
client_dict = {}
2400
2401
# A list of attributes that can not be pickled
2402
# + secret.
2403
exclude = set(("bus", "changedstate", "secret",
2404
"checker"))
2405
for name, typ in (inspect.getmembers
2406
(dbus.service.Object)):
2407
exclude.add(name)
2408
2409
client_dict["encrypted_secret"] = (client
2410
.encrypted_secret)
2411
for attr in client.client_structure:
2412
if attr not in exclude:
2413
client_dict[attr] = getattr(client, attr)
2414
2415
clients[client.name] = client_dict
2416
del client_settings[client.name]["secret"]
2417
2418
try:
2419
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2420
prefix="clients-",
2421
dir=os.path.dirname
2422
(stored_state_path))
2423
with os.fdopen(tempfd, "wb") as stored_state:
2424
pickle.dump((clients, client_settings), stored_state)
2425
os.rename(tempname, stored_state_path)
2426
except (IOError, OSError) as e:
2427
logger.warning("Could not save persistent state: {0}"
2428
.format(e))
2429
if not debug:
2430
try:
2431
os.remove(tempname)
2432
except NameError:
2433
pass
2434
if e.errno not in set((errno.ENOENT, errno.EACCES,
2435
errno.EEXIST)):
2436
raise e
2437
2438
# Delete all clients, and settings from config
2439
1736
while tcp_server.clients:
2440
name, client = tcp_server.clients.popitem()
1737
client = tcp_server.clients.pop()
2441
1738
if use_dbus:
2442
1739
client.remove_from_connection()
1740
client.disable_hook = None
2443
1741
# Don't signal anything except ClientRemoved
2444
1742
client.disable(quiet=True)
2445
1743
if use_dbus:
2446
1744
# Emit D-Bus signal
2447
mandos_dbus_service.ClientRemoved(client
2448
.dbus_object_path,
1745
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2449
1746
client.name)
2450
client_settings.clear()
2451
1747
2452
1748
atexit.register(cleanup)
2453
1749
2454
for client in tcp_server.clients.itervalues():
1750
for client in tcp_server.clients:
2455
1751
if use_dbus:
2456
1752
# Emit D-Bus signal
2457
1753
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2458
# Need to initiate checking of clients
2459
if client.enabled:
2460
client.init_checker()
1754
client.enable()
2461
1755
2462
1756
tcp_server.enable()
2463
1757
tcp_server.server_activate()
2465
1759
# Find out what port we got
2466
1760
service.port = tcp_server.socket.getsockname()[1]
2467
1761
if use_ipv6:
2468
logger.info("Now listening on address %r, port %d,"
1762
logger.info(u"Now listening on address %r, port %d,"
2469
1763
" flowinfo %d, scope_id %d"
2470
1764
% tcp_server.socket.getsockname())
2471
1765
else: # IPv4
2472
logger.info("Now listening on address %r, port %d"
1766
logger.info(u"Now listening on address %r, port %d"
2473
1767
% tcp_server.socket.getsockname())
2474
1768
2475
1769
#service.interface = tcp_server.socket.getsockname()[3]
2478
1772
# From the Avahi example code
2479
1773
try:
2480
1774
service.activate()
2481
except dbus.exceptions.DBusException as error:
2482
logger.critical("DBusException: %s", error)
1775
except dbus.exceptions.DBusException, error:
1776
logger.critical(u"DBusException: %s", error)
2483
1777
cleanup()
2484
1778
sys.exit(1)
2485
1779
# End of Avahi example code
2489
1783
(tcp_server.handle_request
2490
1784
(*args[2:], **kwargs) or True))
2491
1785
2492
logger.debug("Starting main loop")
1786
logger.debug(u"Starting main loop")
2493
1787
main_loop.run()
2494
except AvahiError as error:
2495
logger.critical("AvahiError: %s", error)
1788
except AvahiError, error:
1789
logger.critical(u"AvahiError: %s", error)
2496
1790
cleanup()
2497
1791
sys.exit(1)
2498
1792
except KeyboardInterrupt:
2499
1793
if debug:
2500
print("", file=sys.stderr)
2501
logger.debug("Server received KeyboardInterrupt")
2502
logger.debug("Server exiting")
1794
print >> sys.stderr
1795
logger.debug(u"Server received KeyboardInterrupt")
1796
logger.debug(u"Server exiting")
2503
1797
# Must run before the D-Bus bus name gets deregistered
2504
1798
cleanup()
2505
1799
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0