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- Committer: Teddy Hogeborn
- Date: 2012-01-08 10:19:33 UTC
- Revision ID: teddy@recompile.se-20120108101933-xbtodqgepxax8hn1
Tags: version-1.5.2-1
* Makefile (version): Changed to "1.5.2".
* NEWS (Version 1.5.2): New entry.
* debian/changelog (1.5.2-1): - '' -
* NEWS (Version 1.5.2): New entry.
* debian/changelog (1.5.2-1): - '' -
- files added:
- 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
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# Copyright © 2008-2010 Teddy Hogeborn
15
# Copyright © 2008-2010 Björn Påhlsson
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# Copyright © 2008-2012 Teddy Hogeborn
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# Copyright © 2008-2012 Björn Påhlsson
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16
#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
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32
#
33
33
34
from __future__ import division, with_statement, absolute_import
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
35
36
36
37
import SocketServer as socketserver
37
38
import socket
38
import optparse
39
import argparse
39
40
import datetime
40
41
import errno
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42
import gnutls.crypto
61
62
import functools
62
63
import cPickle as pickle
63
64
import multiprocessing
65
import types
66
import binascii
67
import tempfile
64
68
65
69
import dbus
66
70
import dbus.service
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75
import ctypes.util
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76
import xml.dom.minidom
73
77
import inspect
78
import GnuPGInterface
74
79
75
80
try:
76
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
80
85
except ImportError:
81
86
SO_BINDTODEVICE = None
82
87
83
84
version = "1.0.14"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
version = "1.5.2"
89
stored_state_file = "clients.pickle"
90
91
logger = logging.getLogger()
88
92
syslogger = (logging.handlers.SysLogHandler
89
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
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96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
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)
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logger.setLevel(level)
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130
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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
101
211
102
212
class AvahiError(Exception):
103
213
def __init__(self, value, *args, **kwargs):
119
229
Attributes:
120
230
interface: integer; avahi.IF_UNSPEC or an interface index.
121
231
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
232
name: string; Example: 'Mandos'
233
type: string; Example: '_mandos._tcp'.
124
234
See <http://www.dns-sd.org/ServiceTypes.html>
125
235
port: integer; what port to announce
126
236
TXT: list of strings; TXT record for the service
135
245
"""
136
246
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
247
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
248
domain = "", host = "", max_renames = 32768,
139
249
protocol = avahi.PROTO_UNSPEC, bus = None):
140
250
self.interface = interface
141
251
self.name = name
150
260
self.group = None # our entry group
151
261
self.server = None
152
262
self.bus = bus
263
self.entry_group_state_changed_match = None
153
264
def rename(self):
154
265
"""Derived from the Avahi example code"""
155
266
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
267
logger.critical("No suitable Zeroconf service name found"
268
" after %i retries, exiting.",
158
269
self.rename_count)
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
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 ...",
162
274
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
275
self.remove()
168
276
try:
169
277
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
278
except dbus.exceptions.DBusException as error:
279
logger.critical("DBusException: %s", error)
172
280
self.cleanup()
173
281
os._exit(1)
174
282
self.rename_count += 1
175
283
def remove(self):
176
284
"""Derived from the Avahi example code"""
285
if self.entry_group_state_changed_match is not None:
286
self.entry_group_state_changed_match.remove()
287
self.entry_group_state_changed_match = None
177
288
if self.group is not None:
178
289
self.group.Reset()
179
290
def add(self):
180
291
"""Derived from the Avahi example code"""
292
self.remove()
181
293
if self.group is None:
182
294
self.group = dbus.Interface(
183
295
self.bus.get_object(avahi.DBUS_NAME,
184
296
self.server.EntryGroupNew()),
185
297
avahi.DBUS_INTERFACE_ENTRY_GROUP)
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
298
self.entry_group_state_changed_match = (
299
self.group.connect_to_signal(
300
'StateChanged', self.entry_group_state_changed))
301
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
190
302
self.name, self.type)
191
303
self.group.AddService(
192
304
self.interface,
199
311
self.group.Commit()
200
312
def entry_group_state_changed(self, state, error):
201
313
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
314
logger.debug("Avahi entry group state change: %i", state)
203
315
204
316
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
317
logger.debug("Zeroconf service established.")
206
318
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
319
logger.info("Zeroconf service name collision.")
208
320
self.rename()
209
321
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
322
logger.critical("Avahi: Error in group state changed %s",
211
323
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
324
raise AvahiGroupError("State changed: %s"
213
325
% unicode(error))
214
326
def cleanup(self):
215
327
"""Derived from the Avahi example code"""
216
328
if self.group is not None:
217
self.group.Free()
329
try:
330
self.group.Free()
331
except (dbus.exceptions.UnknownMethodException,
332
dbus.exceptions.DBusException):
333
pass
218
334
self.group = None
219
def server_state_changed(self, state):
335
self.remove()
336
def server_state_changed(self, state, error=None):
220
337
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
338
logger.debug("Avahi server state change: %i", state)
339
bad_states = { avahi.SERVER_INVALID:
340
"Zeroconf server invalid",
341
avahi.SERVER_REGISTERING: None,
342
avahi.SERVER_COLLISION:
343
"Zeroconf server name collision",
344
avahi.SERVER_FAILURE:
345
"Zeroconf server failure" }
346
if state in bad_states:
347
if bad_states[state] is not None:
348
if error is None:
349
logger.error(bad_states[state])
350
else:
351
logger.error(bad_states[state] + ": %r", error)
352
self.cleanup()
225
353
elif state == avahi.SERVER_RUNNING:
226
354
self.add()
355
else:
356
if error is None:
357
logger.debug("Unknown state: %r", state)
358
else:
359
logger.debug("Unknown state: %r: %r", state, error)
227
360
def activate(self):
228
361
"""Derived from the Avahi example code"""
229
362
if self.server is None:
230
363
self.server = dbus.Interface(
231
364
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
365
avahi.DBUS_PATH_SERVER,
366
follow_name_owner_changes=True),
233
367
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
368
self.server.connect_to_signal("StateChanged",
235
369
self.server_state_changed)
236
370
self.server_state_changed(self.server.GetState())
237
371
372
class AvahiServiceToSyslog(AvahiService):
373
def rename(self):
374
"""Add the new name to the syslog messages"""
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
379
% self.name))
380
return ret
238
381
382
def timedelta_to_milliseconds(td):
383
"Convert a datetime.timedelta() to milliseconds"
384
return ((td.days * 24 * 60 * 60 * 1000)
385
+ (td.seconds * 1000)
386
+ (td.microseconds // 1000))
387
239
388
class Client(object):
240
389
"""A representation of a client host served by this server.
241
390
242
391
Attributes:
243
_approved: bool(); 'None' if not yet approved/disapproved
392
approved: bool(); 'None' if not yet approved/disapproved
244
393
approval_delay: datetime.timedelta(); Time to wait for approval
245
394
approval_duration: datetime.timedelta(); Duration of one approval
246
395
checker: subprocess.Popen(); a running checker process used
253
402
instance %(name)s can be used in the command.
254
403
checker_initiator_tag: a gobject event source tag, or None
255
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
256
407
current_checker_command: string; current running checker_command
257
disable_hook: If set, called by disable() as disable_hook(self)
258
408
disable_initiator_tag: a gobject event source tag, or None
259
409
enabled: bool()
260
410
fingerprint: string (40 or 32 hexadecimal digits); used to
263
413
interval: datetime.timedelta(); How often to start a new checker
264
414
last_approval_request: datetime.datetime(); (UTC) or None
265
415
last_checked_ok: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
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
267
420
name: string; from the config file, used in log messages and
268
421
D-Bus identifiers
269
422
secret: bytestring; sent verbatim (over TLS) to client
270
423
timeout: datetime.timedelta(); How long from last_checked_ok
271
424
until this client is disabled
425
extended_timeout: extra long timeout when secret has been sent
272
426
runtime_expansions: Allowed attributes for runtime expansion.
427
expires: datetime.datetime(); time (UTC) when a client will be
428
disabled, or None
273
429
"""
274
430
275
runtime_expansions = (u"approval_delay", u"approval_duration",
276
u"created", u"enabled", u"fingerprint",
277
u"host", u"interval", u"last_checked_ok",
278
u"last_enabled", u"name", u"timeout")
279
280
@staticmethod
281
def _timedelta_to_milliseconds(td):
282
"Convert a datetime.timedelta() to milliseconds"
283
return ((td.days * 24 * 60 * 60 * 1000)
284
+ (td.seconds * 1000)
285
+ (td.microseconds // 1000))
431
runtime_expansions = ("approval_delay", "approval_duration",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
434
"last_enabled", "name", "timeout")
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
437
"interval": "2m",
438
"checker": "fping -q -- %%(host)s",
439
"host": "",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
442
"approved_by_default": "True",
443
"enabled": "True",
444
}
286
445
287
446
def timeout_milliseconds(self):
288
447
"Return the 'timeout' attribute in milliseconds"
289
return self._timedelta_to_milliseconds(self.timeout)
448
return timedelta_to_milliseconds(self.timeout)
449
450
def extended_timeout_milliseconds(self):
451
"Return the 'extended_timeout' attribute in milliseconds"
452
return timedelta_to_milliseconds(self.extended_timeout)
290
453
291
454
def interval_milliseconds(self):
292
455
"Return the 'interval' attribute in milliseconds"
293
return self._timedelta_to_milliseconds(self.interval)
294
456
return timedelta_to_milliseconds(self.interval)
457
295
458
def approval_delay_milliseconds(self):
296
return self._timedelta_to_milliseconds(self.approval_delay)
297
298
def __init__(self, name = None, disable_hook=None, config=None):
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):
299
510
"""Note: the 'checker' key in 'config' sets the
300
511
'checker_command' attribute and *not* the 'checker'
301
512
attribute."""
302
513
self.name = name
303
if config is None:
304
config = {}
305
logger.debug(u"Creating client %r", self.name)
514
# adding all client settings
515
for setting, value in settings.iteritems():
516
setattr(self, setting, value)
517
518
if self.enabled:
519
if not hasattr(self, "last_enabled"):
520
self.last_enabled = datetime.datetime.utcnow()
521
if not hasattr(self, "expires"):
522
self.expires = (datetime.datetime.utcnow()
523
+ self.timeout)
524
else:
525
self.last_enabled = None
526
self.expires = None
527
528
logger.debug("Creating client %r", self.name)
306
529
# Uppercase and remove spaces from fingerprint for later
307
530
# comparison purposes with return value from the fingerprint()
308
531
# function
309
self.fingerprint = (config[u"fingerprint"].upper()
310
.replace(u" ", u""))
311
logger.debug(u" Fingerprint: %s", self.fingerprint)
312
if u"secret" in config:
313
self.secret = config[u"secret"].decode(u"base64")
314
elif u"secfile" in config:
315
with open(os.path.expanduser(os.path.expandvars
316
(config[u"secfile"])),
317
"rb") as secfile:
318
self.secret = secfile.read()
319
else:
320
raise TypeError(u"No secret or secfile for client %s"
321
% self.name)
322
self.host = config.get(u"host", u"")
323
self.created = datetime.datetime.utcnow()
324
self.enabled = False
325
self.last_approval_request = None
326
self.last_enabled = None
327
self.last_checked_ok = None
328
self.timeout = string_to_delta(config[u"timeout"])
329
self.interval = string_to_delta(config[u"interval"])
330
self.disable_hook = disable_hook
532
logger.debug(" Fingerprint: %s", self.fingerprint)
533
self.created = settings.get("created",
534
datetime.datetime.utcnow())
535
536
# attributes specific for this server instance
331
537
self.checker = None
332
538
self.checker_initiator_tag = None
333
539
self.disable_initiator_tag = None
334
540
self.checker_callback_tag = None
335
self.checker_command = config[u"checker"]
336
541
self.current_checker_command = None
337
self.last_connect = None
338
self._approved = None
339
self.approved_by_default = config.get(u"approved_by_default",
340
True)
542
self.approved = None
341
543
self.approvals_pending = 0
342
self.approval_delay = string_to_delta(
343
config[u"approval_delay"])
344
self.approval_duration = string_to_delta(
345
config[u"approval_duration"])
346
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
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)
347
558
559
# Send notice to process children that client state has changed
348
560
def send_changedstate(self):
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
561
with self.changedstate:
562
self.changedstate.notify_all()
563
353
564
def enable(self):
354
565
"""Start this client's checker and timeout hooks"""
355
if getattr(self, u"enabled", False):
566
if getattr(self, "enabled", False):
356
567
# Already enabled
357
568
return
358
569
self.send_changedstate()
570
self.expires = datetime.datetime.utcnow() + self.timeout
571
self.enabled = True
359
572
self.last_enabled = datetime.datetime.utcnow()
573
self.init_checker()
574
575
def disable(self, quiet=True):
576
"""Disable this client."""
577
if not getattr(self, "enabled", False):
578
return False
579
if not quiet:
580
self.send_changedstate()
581
if not quiet:
582
logger.info("Disabling client %s", self.name)
583
if getattr(self, "disable_initiator_tag", False):
584
gobject.source_remove(self.disable_initiator_tag)
585
self.disable_initiator_tag = None
586
self.expires = None
587
if getattr(self, "checker_initiator_tag", False):
588
gobject.source_remove(self.checker_initiator_tag)
589
self.checker_initiator_tag = None
590
self.stop_checker()
591
self.enabled = False
592
# Do not run this again if called by a gobject.timeout_add
593
return False
594
595
def __del__(self):
596
self.disable()
597
598
def init_checker(self):
360
599
# Schedule a new checker to be started an 'interval' from now,
361
600
# and every interval from then on.
362
601
self.checker_initiator_tag = (gobject.timeout_add
366
605
self.disable_initiator_tag = (gobject.timeout_add
367
606
(self.timeout_milliseconds(),
368
607
self.disable))
369
self.enabled = True
370
608
# Also start a new checker *right now*.
371
609
self.start_checker()
372
610
373
def disable(self, quiet=True):
374
"""Disable this client."""
375
if not getattr(self, "enabled", False):
376
return False
377
if not quiet:
378
self.send_changedstate()
379
if not quiet:
380
logger.info(u"Disabling client %s", self.name)
381
if getattr(self, u"disable_initiator_tag", False):
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = None
384
if getattr(self, u"checker_initiator_tag", False):
385
gobject.source_remove(self.checker_initiator_tag)
386
self.checker_initiator_tag = None
387
self.stop_checker()
388
if self.disable_hook:
389
self.disable_hook(self)
390
self.enabled = False
391
# Do not run this again if called by a gobject.timeout_add
392
return False
393
394
def __del__(self):
395
self.disable_hook = None
396
self.disable()
397
398
611
def checker_callback(self, pid, condition, command):
399
612
"""The checker has completed, so take appropriate actions."""
400
613
self.checker_callback_tag = None
401
614
self.checker = None
402
615
if os.WIFEXITED(condition):
403
exitstatus = os.WEXITSTATUS(condition)
404
if exitstatus == 0:
405
logger.info(u"Checker for %(name)s succeeded",
616
self.last_checker_status = os.WEXITSTATUS(condition)
617
if self.last_checker_status == 0:
618
logger.info("Checker for %(name)s succeeded",
406
619
vars(self))
407
620
self.checked_ok()
408
621
else:
409
logger.info(u"Checker for %(name)s failed",
622
logger.info("Checker for %(name)s failed",
410
623
vars(self))
411
624
else:
412
logger.warning(u"Checker for %(name)s crashed?",
625
self.last_checker_status = -1
626
logger.warning("Checker for %(name)s crashed?",
413
627
vars(self))
414
628
415
def checked_ok(self):
629
def checked_ok(self, timeout=None):
416
630
"""Bump up the timeout for this client.
417
631
418
632
This should only be called when the client has been seen,
419
633
alive and well.
420
634
"""
635
if timeout is None:
636
timeout = self.timeout
421
637
self.last_checked_ok = datetime.datetime.utcnow()
422
gobject.source_remove(self.disable_initiator_tag)
423
self.disable_initiator_tag = (gobject.timeout_add
424
(self.timeout_milliseconds(),
425
self.disable))
638
if self.disable_initiator_tag is not None:
639
gobject.source_remove(self.disable_initiator_tag)
640
if getattr(self, "enabled", False):
641
self.disable_initiator_tag = (gobject.timeout_add
642
(timedelta_to_milliseconds
643
(timeout), self.disable))
644
self.expires = datetime.datetime.utcnow() + timeout
426
645
427
646
def need_approval(self):
428
647
self.last_approval_request = datetime.datetime.utcnow()
444
663
# If a checker exists, make sure it is not a zombie
445
664
try:
446
665
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
447
except (AttributeError, OSError), error:
666
except (AttributeError, OSError) as error:
448
667
if (isinstance(error, OSError)
449
668
and error.errno != errno.ECHILD):
450
669
raise error
451
670
else:
452
671
if pid:
453
logger.warning(u"Checker was a zombie")
672
logger.warning("Checker was a zombie")
454
673
gobject.source_remove(self.checker_callback_tag)
455
674
self.checker_callback(pid, status,
456
675
self.current_checker_command)
463
682
# Escape attributes for the shell
464
683
escaped_attrs = dict(
465
684
(attr,
466
re.escape(unicode(str(getattr(self, attr, u"")),
685
re.escape(unicode(str(getattr(self, attr, "")),
467
686
errors=
468
u'replace')))
687
'replace')))
469
688
for attr in
470
689
self.runtime_expansions)
471
690
472
691
try:
473
692
command = self.checker_command % escaped_attrs
474
except TypeError, error:
475
logger.error(u'Could not format string "%s":'
476
u' %s', self.checker_command, error)
693
except TypeError as error:
694
logger.error('Could not format string "%s":'
695
' %s', self.checker_command, error)
477
696
return True # Try again later
478
697
self.current_checker_command = command
479
698
try:
480
logger.info(u"Starting checker %r for %s",
699
logger.info("Starting checker %r for %s",
481
700
command, self.name)
482
701
# We don't need to redirect stdout and stderr, since
483
702
# in normal mode, that is already done by daemon(),
485
704
# always replaced by /dev/null.)
486
705
self.checker = subprocess.Popen(command,
487
706
close_fds=True,
488
shell=True, cwd=u"/")
707
shell=True, cwd="/")
489
708
self.checker_callback_tag = (gobject.child_watch_add
490
709
(self.checker.pid,
491
710
self.checker_callback,
496
715
if pid:
497
716
gobject.source_remove(self.checker_callback_tag)
498
717
self.checker_callback(pid, status, command)
499
except OSError, error:
500
logger.error(u"Failed to start subprocess: %s",
718
except OSError as error:
719
logger.error("Failed to start subprocess: %s",
501
720
error)
502
721
# Re-run this periodically if run by gobject.timeout_add
503
722
return True
507
726
if self.checker_callback_tag:
508
727
gobject.source_remove(self.checker_callback_tag)
509
728
self.checker_callback_tag = None
510
if getattr(self, u"checker", None) is None:
729
if getattr(self, "checker", None) is None:
511
730
return
512
logger.debug(u"Stopping checker for %(name)s", vars(self))
731
logger.debug("Stopping checker for %(name)s", vars(self))
513
732
try:
514
733
os.kill(self.checker.pid, signal.SIGTERM)
515
734
#time.sleep(0.5)
516
735
#if self.checker.poll() is None:
517
736
# os.kill(self.checker.pid, signal.SIGKILL)
518
except OSError, error:
737
except OSError as error:
519
738
if error.errno != errno.ESRCH: # No such process
520
739
raise
521
740
self.checker = None
522
741
523
def dbus_service_property(dbus_interface, signature=u"v",
524
access=u"readwrite", byte_arrays=False):
742
743
def dbus_service_property(dbus_interface, signature="v",
744
access="readwrite", byte_arrays=False):
525
745
"""Decorators for marking methods of a DBusObjectWithProperties to
526
746
become properties on the D-Bus.
527
747
534
754
"""
535
755
# Encoding deeply encoded byte arrays is not supported yet by the
536
756
# "Set" method, so we fail early here:
537
if byte_arrays and signature != u"ay":
538
raise ValueError(u"Byte arrays not supported for non-'ay'"
539
u" signature %r" % signature)
757
if byte_arrays and signature != "ay":
758
raise ValueError("Byte arrays not supported for non-'ay'"
759
" signature %r" % signature)
540
760
def decorator(func):
541
761
func._dbus_is_property = True
542
762
func._dbus_interface = dbus_interface
543
763
func._dbus_signature = signature
544
764
func._dbus_access = access
545
765
func._dbus_name = func.__name__
546
if func._dbus_name.endswith(u"_dbus_property"):
766
if func._dbus_name.endswith("_dbus_property"):
547
767
func._dbus_name = func._dbus_name[:-14]
548
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
768
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
549
769
return func
550
770
return decorator
551
771
571
791
572
792
class DBusObjectWithProperties(dbus.service.Object):
573
793
"""A D-Bus object with properties.
574
794
575
795
Classes inheriting from this can use the dbus_service_property
576
796
decorator to expose methods as D-Bus properties. It exposes the
577
797
standard Get(), Set(), and GetAll() methods on the D-Bus.
579
799
580
800
@staticmethod
581
801
def _is_dbus_property(obj):
582
return getattr(obj, u"_dbus_is_property", False)
802
return getattr(obj, "_dbus_is_property", False)
583
803
584
804
def _get_all_dbus_properties(self):
585
805
"""Returns a generator of (name, attribute) pairs
586
806
"""
587
return ((prop._dbus_name, prop)
807
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
808
for cls in self.__class__.__mro__
588
809
for name, prop in
589
inspect.getmembers(self, self._is_dbus_property))
810
inspect.getmembers(cls, self._is_dbus_property))
590
811
591
812
def _get_dbus_property(self, interface_name, property_name):
592
813
"""Returns a bound method if one exists which is a D-Bus
593
814
property with the specified name and interface.
594
815
"""
595
for name in (property_name,
596
property_name + u"_dbus_property"):
597
prop = getattr(self, name, None)
598
if (prop is None
599
or not self._is_dbus_property(prop)
600
or prop._dbus_name != property_name
601
or (interface_name and prop._dbus_interface
602
and interface_name != prop._dbus_interface)):
603
continue
604
return prop
816
for cls in self.__class__.__mro__:
817
for name, value in (inspect.getmembers
818
(cls, self._is_dbus_property)):
819
if (value._dbus_name == property_name
820
and value._dbus_interface == interface_name):
821
return value.__get__(self)
822
605
823
# No such property
606
raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
+ interface_name + u"."
824
raise DBusPropertyNotFound(self.dbus_object_path + ":"
825
+ interface_name + "."
608
826
+ property_name)
609
827
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
611
out_signature=u"v")
828
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
829
out_signature="v")
612
830
def Get(self, interface_name, property_name):
613
831
"""Standard D-Bus property Get() method, see D-Bus standard.
614
832
"""
615
833
prop = self._get_dbus_property(interface_name, property_name)
616
if prop._dbus_access == u"write":
834
if prop._dbus_access == "write":
617
835
raise DBusPropertyAccessException(property_name)
618
836
value = prop()
619
if not hasattr(value, u"variant_level"):
837
if not hasattr(value, "variant_level"):
620
838
return value
621
839
return type(value)(value, variant_level=value.variant_level+1)
622
840
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
841
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
624
842
def Set(self, interface_name, property_name, value):
625
843
"""Standard D-Bus property Set() method, see D-Bus standard.
626
844
"""
627
845
prop = self._get_dbus_property(interface_name, property_name)
628
if prop._dbus_access == u"read":
846
if prop._dbus_access == "read":
629
847
raise DBusPropertyAccessException(property_name)
630
if prop._dbus_get_args_options[u"byte_arrays"]:
848
if prop._dbus_get_args_options["byte_arrays"]:
631
849
# The byte_arrays option is not supported yet on
632
850
# signatures other than "ay".
633
if prop._dbus_signature != u"ay":
851
if prop._dbus_signature != "ay":
634
852
raise ValueError
635
value = dbus.ByteArray(''.join(unichr(byte)
636
for byte in value))
853
value = dbus.ByteArray(b''.join(chr(byte)
854
for byte in value))
637
855
prop(value)
638
856
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
857
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
858
out_signature="a{sv}")
641
859
def GetAll(self, interface_name):
642
860
"""Standard D-Bus property GetAll() method, see D-Bus
643
861
standard.
644
862
645
863
Note: Will not include properties with access="write".
646
864
"""
647
all = {}
865
properties = {}
648
866
for name, prop in self._get_all_dbus_properties():
649
867
if (interface_name
650
868
and interface_name != prop._dbus_interface):
651
869
# Interface non-empty but did not match
652
870
continue
653
871
# Ignore write-only properties
654
if prop._dbus_access == u"write":
872
if prop._dbus_access == "write":
655
873
continue
656
874
value = prop()
657
if not hasattr(value, u"variant_level"):
658
all[name] = value
875
if not hasattr(value, "variant_level"):
876
properties[name] = value
659
877
continue
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
878
properties[name] = type(value)(value, variant_level=
879
value.variant_level+1)
880
return dbus.Dictionary(properties, signature="sv")
663
881
664
882
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
665
out_signature=u"s",
883
out_signature="s",
666
884
path_keyword='object_path',
667
885
connection_keyword='connection')
668
886
def Introspect(self, object_path, connection):
673
891
try:
674
892
document = xml.dom.minidom.parseString(xmlstring)
675
893
def make_tag(document, name, prop):
676
e = document.createElement(u"property")
677
e.setAttribute(u"name", name)
678
e.setAttribute(u"type", prop._dbus_signature)
679
e.setAttribute(u"access", prop._dbus_access)
894
e = document.createElement("property")
895
e.setAttribute("name", name)
896
e.setAttribute("type", prop._dbus_signature)
897
e.setAttribute("access", prop._dbus_access)
680
898
return e
681
for if_tag in document.getElementsByTagName(u"interface"):
899
for if_tag in document.getElementsByTagName("interface"):
682
900
for tag in (make_tag(document, name, prop)
683
901
for name, prop
684
902
in self._get_all_dbus_properties()
685
903
if prop._dbus_interface
686
== if_tag.getAttribute(u"name")):
904
== if_tag.getAttribute("name")):
687
905
if_tag.appendChild(tag)
688
906
# Add the names to the return values for the
689
907
# "org.freedesktop.DBus.Properties" methods
690
if (if_tag.getAttribute(u"name")
691
== u"org.freedesktop.DBus.Properties"):
692
for cn in if_tag.getElementsByTagName(u"method"):
693
if cn.getAttribute(u"name") == u"Get":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"value")
698
elif cn.getAttribute(u"name") == u"GetAll":
699
for arg in cn.getElementsByTagName(u"arg"):
700
if (arg.getAttribute(u"direction")
701
== u"out"):
702
arg.setAttribute(u"name", u"props")
703
xmlstring = document.toxml(u"utf-8")
908
if (if_tag.getAttribute("name")
909
== "org.freedesktop.DBus.Properties"):
910
for cn in if_tag.getElementsByTagName("method"):
911
if cn.getAttribute("name") == "Get":
912
for arg in cn.getElementsByTagName("arg"):
913
if (arg.getAttribute("direction")
914
== "out"):
915
arg.setAttribute("name", "value")
916
elif cn.getAttribute("name") == "GetAll":
917
for arg in cn.getElementsByTagName("arg"):
918
if (arg.getAttribute("direction")
919
== "out"):
920
arg.setAttribute("name", "props")
921
xmlstring = document.toxml("utf-8")
704
922
document.unlink()
705
923
except (AttributeError, xml.dom.DOMException,
706
xml.parsers.expat.ExpatError), error:
707
logger.error(u"Failed to override Introspection method",
924
xml.parsers.expat.ExpatError) as error:
925
logger.error("Failed to override Introspection method",
708
926
error)
709
927
return xmlstring
710
928
711
929
930
def datetime_to_dbus (dt, variant_level=0):
931
"""Convert a UTC datetime.datetime() to a D-Bus type."""
932
if dt is None:
933
return dbus.String("", variant_level = variant_level)
934
return dbus.String(dt.isoformat(),
935
variant_level=variant_level)
936
937
938
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
939
.__metaclass__):
940
"""Applied to an empty subclass of a D-Bus object, this metaclass
941
will add additional D-Bus attributes matching a certain pattern.
942
"""
943
def __new__(mcs, name, bases, attr):
944
# Go through all the base classes which could have D-Bus
945
# methods, signals, or properties in them
946
for base in (b for b in bases
947
if issubclass(b, dbus.service.Object)):
948
# Go though all attributes of the base class
949
for attrname, attribute in inspect.getmembers(base):
950
# Ignore non-D-Bus attributes, and D-Bus attributes
951
# with the wrong interface name
952
if (not hasattr(attribute, "_dbus_interface")
953
or not attribute._dbus_interface
954
.startswith("se.recompile.Mandos")):
955
continue
956
# Create an alternate D-Bus interface name based on
957
# the current name
958
alt_interface = (attribute._dbus_interface
959
.replace("se.recompile.Mandos",
960
"se.bsnet.fukt.Mandos"))
961
# Is this a D-Bus signal?
962
if getattr(attribute, "_dbus_is_signal", False):
963
# Extract the original non-method function by
964
# black magic
965
nonmethod_func = (dict(
966
zip(attribute.func_code.co_freevars,
967
attribute.__closure__))["func"]
968
.cell_contents)
969
# Create a new, but exactly alike, function
970
# object, and decorate it to be a new D-Bus signal
971
# with the alternate D-Bus interface name
972
new_function = (dbus.service.signal
973
(alt_interface,
974
attribute._dbus_signature)
975
(types.FunctionType(
976
nonmethod_func.func_code,
977
nonmethod_func.func_globals,
978
nonmethod_func.func_name,
979
nonmethod_func.func_defaults,
980
nonmethod_func.func_closure)))
981
# Define a creator of a function to call both the
982
# old and new functions, so both the old and new
983
# signals gets sent when the function is called
984
def fixscope(func1, func2):
985
"""This function is a scope container to pass
986
func1 and func2 to the "call_both" function
987
outside of its arguments"""
988
def call_both(*args, **kwargs):
989
"""This function will emit two D-Bus
990
signals by calling func1 and func2"""
991
func1(*args, **kwargs)
992
func2(*args, **kwargs)
993
return call_both
994
# Create the "call_both" function and add it to
995
# the class
996
attr[attrname] = fixscope(attribute,
997
new_function)
998
# Is this a D-Bus method?
999
elif getattr(attribute, "_dbus_is_method", False):
1000
# Create a new, but exactly alike, function
1001
# object. Decorate it to be a new D-Bus method
1002
# with the alternate D-Bus interface name. Add it
1003
# to the class.
1004
attr[attrname] = (dbus.service.method
1005
(alt_interface,
1006
attribute._dbus_in_signature,
1007
attribute._dbus_out_signature)
1008
(types.FunctionType
1009
(attribute.func_code,
1010
attribute.func_globals,
1011
attribute.func_name,
1012
attribute.func_defaults,
1013
attribute.func_closure)))
1014
# Is this a D-Bus property?
1015
elif getattr(attribute, "_dbus_is_property", False):
1016
# Create a new, but exactly alike, function
1017
# object, and decorate it to be a new D-Bus
1018
# property with the alternate D-Bus interface
1019
# name. Add it to the class.
1020
attr[attrname] = (dbus_service_property
1021
(alt_interface,
1022
attribute._dbus_signature,
1023
attribute._dbus_access,
1024
attribute
1025
._dbus_get_args_options
1026
["byte_arrays"])
1027
(types.FunctionType
1028
(attribute.func_code,
1029
attribute.func_globals,
1030
attribute.func_name,
1031
attribute.func_defaults,
1032
attribute.func_closure)))
1033
return type.__new__(mcs, name, bases, attr)
1034
1035
712
1036
class ClientDBus(Client, DBusObjectWithProperties):
713
1037
"""A Client class using D-Bus
714
1038
718
1042
"""
719
1043
720
1044
runtime_expansions = (Client.runtime_expansions
721
+ (u"dbus_object_path",))
1045
+ ("dbus_object_path",))
722
1046
723
1047
# dbus.service.Object doesn't use super(), so we can't either.
724
1048
725
1049
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
727
1050
self.bus = bus
728
1051
Client.__init__(self, *args, **kwargs)
729
1052
# Only now, when this client is initialized, can it show up on
730
1053
# the D-Bus
731
1054
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
1055
{ord("."): ord("_"),
1056
ord("-"): ord("_")})
734
1057
self.dbus_object_path = (dbus.ObjectPath
735
(u"/clients/" + client_object_name))
1058
("/clients/" + client_object_name))
736
1059
DBusObjectWithProperties.__init__(self, self.bus,
737
1060
self.dbus_object_path)
738
1061
739
def _get_approvals_pending(self):
740
return self._approvals_pending
741
def _set_approvals_pending(self, value):
742
old_value = self._approvals_pending
743
self._approvals_pending = value
744
bval = bool(value)
745
if (hasattr(self, "dbus_object_path")
746
and bval is not bool(old_value)):
747
dbus_bool = dbus.Boolean(bval, variant_level=1)
748
self.PropertyChanged(dbus.String(u"ApprovalPending"),
749
dbus_bool)
750
751
approvals_pending = property(_get_approvals_pending,
752
_set_approvals_pending)
753
del _get_approvals_pending, _set_approvals_pending
754
755
@staticmethod
756
def _datetime_to_dbus(dt, variant_level=0):
757
"""Convert a UTC datetime.datetime() to a D-Bus type."""
758
return dbus.String(dt.isoformat(),
759
variant_level=variant_level)
760
761
def enable(self):
762
oldstate = getattr(self, u"enabled", False)
763
r = Client.enable(self)
764
if oldstate != self.enabled:
765
# Emit D-Bus signals
766
self.PropertyChanged(dbus.String(u"Enabled"),
767
dbus.Boolean(True, variant_level=1))
768
self.PropertyChanged(
769
dbus.String(u"LastEnabled"),
770
self._datetime_to_dbus(self.last_enabled,
771
variant_level=1))
772
return r
773
774
def disable(self, quiet = False):
775
oldstate = getattr(self, u"enabled", False)
776
r = Client.disable(self, quiet=quiet)
777
if not quiet and oldstate != self.enabled:
778
# Emit D-Bus signal
779
self.PropertyChanged(dbus.String(u"Enabled"),
780
dbus.Boolean(False, variant_level=1))
781
return r
1062
def notifychangeproperty(transform_func,
1063
dbus_name, type_func=lambda x: x,
1064
variant_level=1):
1065
""" Modify a variable so that it's a property which announces
1066
its changes to DBus.
1067
1068
transform_fun: Function that takes a value and a variant_level
1069
and transforms it to a D-Bus type.
1070
dbus_name: D-Bus name of the variable
1071
type_func: Function that transform the value before sending it
1072
to the D-Bus. Default: no transform
1073
variant_level: D-Bus variant level. Default: 1
1074
"""
1075
attrname = "_{0}".format(dbus_name)
1076
def setter(self, value):
1077
if hasattr(self, "dbus_object_path"):
1078
if (not hasattr(self, attrname) or
1079
type_func(getattr(self, attrname, None))
1080
!= type_func(value)):
1081
dbus_value = transform_func(type_func(value),
1082
variant_level
1083
=variant_level)
1084
self.PropertyChanged(dbus.String(dbus_name),
1085
dbus_value)
1086
setattr(self, attrname, value)
1087
1088
return property(lambda self: getattr(self, attrname), setter)
1089
1090
1091
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1092
approvals_pending = notifychangeproperty(dbus.Boolean,
1093
"ApprovalPending",
1094
type_func = bool)
1095
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1096
last_enabled = notifychangeproperty(datetime_to_dbus,
1097
"LastEnabled")
1098
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1099
type_func = lambda checker:
1100
checker is not None)
1101
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1102
"LastCheckedOK")
1103
last_approval_request = notifychangeproperty(
1104
datetime_to_dbus, "LastApprovalRequest")
1105
approved_by_default = notifychangeproperty(dbus.Boolean,
1106
"ApprovedByDefault")
1107
approval_delay = notifychangeproperty(dbus.UInt64,
1108
"ApprovalDelay",
1109
type_func =
1110
timedelta_to_milliseconds)
1111
approval_duration = notifychangeproperty(
1112
dbus.UInt64, "ApprovalDuration",
1113
type_func = timedelta_to_milliseconds)
1114
host = notifychangeproperty(dbus.String, "Host")
1115
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1116
type_func =
1117
timedelta_to_milliseconds)
1118
extended_timeout = notifychangeproperty(
1119
dbus.UInt64, "ExtendedTimeout",
1120
type_func = timedelta_to_milliseconds)
1121
interval = notifychangeproperty(dbus.UInt64,
1122
"Interval",
1123
type_func =
1124
timedelta_to_milliseconds)
1125
checker_command = notifychangeproperty(dbus.String, "Checker")
1126
1127
del notifychangeproperty
782
1128
783
1129
def __del__(self, *args, **kwargs):
784
1130
try:
785
1131
self.remove_from_connection()
786
1132
except LookupError:
787
1133
pass
788
if hasattr(DBusObjectWithProperties, u"__del__"):
1134
if hasattr(DBusObjectWithProperties, "__del__"):
789
1135
DBusObjectWithProperties.__del__(self, *args, **kwargs)
790
1136
Client.__del__(self, *args, **kwargs)
791
1137
793
1139
*args, **kwargs):
794
1140
self.checker_callback_tag = None
795
1141
self.checker = None
796
# Emit D-Bus signal
797
self.PropertyChanged(dbus.String(u"CheckerRunning"),
798
dbus.Boolean(False, variant_level=1))
799
1142
if os.WIFEXITED(condition):
800
1143
exitstatus = os.WEXITSTATUS(condition)
801
1144
# Emit D-Bus signal
811
1154
return Client.checker_callback(self, pid, condition, command,
812
1155
*args, **kwargs)
813
1156
814
def checked_ok(self, *args, **kwargs):
815
r = Client.checked_ok(self, *args, **kwargs)
816
# Emit D-Bus signal
817
self.PropertyChanged(
818
dbus.String(u"LastCheckedOK"),
819
(self._datetime_to_dbus(self.last_checked_ok,
820
variant_level=1)))
821
return r
822
823
def need_approval(self, *args, **kwargs):
824
r = Client.need_approval(self, *args, **kwargs)
825
# Emit D-Bus signal
826
self.PropertyChanged(
827
dbus.String(u"LastApprovalRequest"),
828
(self._datetime_to_dbus(self.last_approval_request,
829
variant_level=1)))
830
return r
831
832
1157
def start_checker(self, *args, **kwargs):
833
1158
old_checker = self.checker
834
1159
if self.checker is not None:
841
1166
and old_checker_pid != self.checker.pid):
842
1167
# Emit D-Bus signal
843
1168
self.CheckerStarted(self.current_checker_command)
844
self.PropertyChanged(
845
dbus.String(u"CheckerRunning"),
846
dbus.Boolean(True, variant_level=1))
847
1169
return r
848
1170
849
def stop_checker(self, *args, **kwargs):
850
old_checker = getattr(self, u"checker", None)
851
r = Client.stop_checker(self, *args, **kwargs)
852
if (old_checker is not None
853
and getattr(self, u"checker", None) is None):
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
855
dbus.Boolean(False, variant_level=1))
856
return r
857
858
1171
def _reset_approved(self):
859
self._approved = None
1172
self.approved = None
860
1173
return False
861
1174
862
1175
def approve(self, value=True):
863
1176
self.send_changedstate()
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
1177
self.approved = value
1178
gobject.timeout_add(timedelta_to_milliseconds
866
1179
(self.approval_duration),
867
1180
self._reset_approved)
868
1181
869
1182
870
1183
## D-Bus methods, signals & properties
871
_interface = u"se.bsnet.fukt.Mandos.Client"
1184
_interface = "se.recompile.Mandos.Client"
872
1185
873
1186
## Signals
874
1187
875
1188
# CheckerCompleted - signal
876
@dbus.service.signal(_interface, signature=u"nxs")
1189
@dbus.service.signal(_interface, signature="nxs")
877
1190
def CheckerCompleted(self, exitcode, waitstatus, command):
878
1191
"D-Bus signal"
879
1192
pass
880
1193
881
1194
# CheckerStarted - signal
882
@dbus.service.signal(_interface, signature=u"s")
1195
@dbus.service.signal(_interface, signature="s")
883
1196
def CheckerStarted(self, command):
884
1197
"D-Bus signal"
885
1198
pass
886
1199
887
1200
# PropertyChanged - signal
888
@dbus.service.signal(_interface, signature=u"sv")
1201
@dbus.service.signal(_interface, signature="sv")
889
1202
def PropertyChanged(self, property, value):
890
1203
"D-Bus signal"
891
1204
pass
900
1213
pass
901
1214
902
1215
# Rejected - signal
903
@dbus.service.signal(_interface, signature=u"s")
1216
@dbus.service.signal(_interface, signature="s")
904
1217
def Rejected(self, reason):
905
1218
"D-Bus signal"
906
1219
pass
907
1220
908
1221
# NeedApproval - signal
909
@dbus.service.signal(_interface, signature=u"tb")
1222
@dbus.service.signal(_interface, signature="tb")
910
1223
def NeedApproval(self, timeout, default):
911
1224
"D-Bus signal"
912
1225
return self.need_approval()
914
1227
## Methods
915
1228
916
1229
# Approve - method
917
@dbus.service.method(_interface, in_signature=u"b")
1230
@dbus.service.method(_interface, in_signature="b")
918
1231
def Approve(self, value):
919
1232
self.approve(value)
920
1233
921
1234
# CheckedOK - method
922
1235
@dbus.service.method(_interface)
923
1236
def CheckedOK(self):
924
return self.checked_ok()
1237
self.checked_ok()
925
1238
926
1239
# Enable - method
927
1240
@dbus.service.method(_interface)
949
1262
## Properties
950
1263
951
1264
# ApprovalPending - property
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
1265
@dbus_service_property(_interface, signature="b", access="read")
953
1266
def ApprovalPending_dbus_property(self):
954
1267
return dbus.Boolean(bool(self.approvals_pending))
955
1268
956
1269
# ApprovedByDefault - property
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
1270
@dbus_service_property(_interface, signature="b",
1271
access="readwrite")
959
1272
def ApprovedByDefault_dbus_property(self, value=None):
960
1273
if value is None: # get
961
1274
return dbus.Boolean(self.approved_by_default)
962
1275
self.approved_by_default = bool(value)
963
# Emit D-Bus signal
964
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
dbus.Boolean(value, variant_level=1))
966
1276
967
1277
# ApprovalDelay - property
968
@dbus_service_property(_interface, signature=u"t",
969
access=u"readwrite")
1278
@dbus_service_property(_interface, signature="t",
1279
access="readwrite")
970
1280
def ApprovalDelay_dbus_property(self, value=None):
971
1281
if value is None: # get
972
1282
return dbus.UInt64(self.approval_delay_milliseconds())
973
1283
self.approval_delay = datetime.timedelta(0, 0, 0, value)
974
# Emit D-Bus signal
975
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
dbus.UInt64(value, variant_level=1))
977
1284
978
1285
# ApprovalDuration - property
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
1286
@dbus_service_property(_interface, signature="t",
1287
access="readwrite")
981
1288
def ApprovalDuration_dbus_property(self, value=None):
982
1289
if value is None: # get
983
return dbus.UInt64(self._timedelta_to_milliseconds(
1290
return dbus.UInt64(timedelta_to_milliseconds(
984
1291
self.approval_duration))
985
1292
self.approval_duration = datetime.timedelta(0, 0, 0, value)
986
# Emit D-Bus signal
987
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
dbus.UInt64(value, variant_level=1))
989
1293
990
1294
# Name - property
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
1295
@dbus_service_property(_interface, signature="s", access="read")
992
1296
def Name_dbus_property(self):
993
1297
return dbus.String(self.name)
994
1298
995
1299
# Fingerprint - property
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
1300
@dbus_service_property(_interface, signature="s", access="read")
997
1301
def Fingerprint_dbus_property(self):
998
1302
return dbus.String(self.fingerprint)
999
1303
1000
1304
# Host - property
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
1305
@dbus_service_property(_interface, signature="s",
1306
access="readwrite")
1003
1307
def Host_dbus_property(self, value=None):
1004
1308
if value is None: # get
1005
1309
return dbus.String(self.host)
1006
self.host = value
1007
# Emit D-Bus signal
1008
self.PropertyChanged(dbus.String(u"Host"),
1009
dbus.String(value, variant_level=1))
1310
self.host = unicode(value)
1010
1311
1011
1312
# Created - property
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
1313
@dbus_service_property(_interface, signature="s", access="read")
1013
1314
def Created_dbus_property(self):
1014
return dbus.String(self._datetime_to_dbus(self.created))
1315
return datetime_to_dbus(self.created)
1015
1316
1016
1317
# LastEnabled - property
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
1318
@dbus_service_property(_interface, signature="s", access="read")
1018
1319
def LastEnabled_dbus_property(self):
1019
if self.last_enabled is None:
1020
return dbus.String(u"")
1021
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1320
return datetime_to_dbus(self.last_enabled)
1022
1321
1023
1322
# Enabled - property
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
1323
@dbus_service_property(_interface, signature="b",
1324
access="readwrite")
1026
1325
def Enabled_dbus_property(self, value=None):
1027
1326
if value is None: # get
1028
1327
return dbus.Boolean(self.enabled)
1032
1331
self.disable()
1033
1332
1034
1333
# LastCheckedOK - property
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
1334
@dbus_service_property(_interface, signature="s",
1335
access="readwrite")
1037
1336
def LastCheckedOK_dbus_property(self, value=None):
1038
1337
if value is not None:
1039
1338
self.checked_ok()
1040
1339
return
1041
if self.last_checked_ok is None:
1042
return dbus.String(u"")
1043
return dbus.String(self._datetime_to_dbus(self
1044
.last_checked_ok))
1340
return datetime_to_dbus(self.last_checked_ok)
1341
1342
# Expires - property
1343
@dbus_service_property(_interface, signature="s", access="read")
1344
def Expires_dbus_property(self):
1345
return datetime_to_dbus(self.expires)
1045
1346
1046
1347
# LastApprovalRequest - property
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
1348
@dbus_service_property(_interface, signature="s", access="read")
1048
1349
def LastApprovalRequest_dbus_property(self):
1049
if self.last_approval_request is None:
1050
return dbus.String(u"")
1051
return dbus.String(self.
1052
_datetime_to_dbus(self
1053
.last_approval_request))
1350
return datetime_to_dbus(self.last_approval_request)
1054
1351
1055
1352
# Timeout - property
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
1353
@dbus_service_property(_interface, signature="t",
1354
access="readwrite")
1058
1355
def Timeout_dbus_property(self, value=None):
1059
1356
if value is None: # get
1060
1357
return dbus.UInt64(self.timeout_milliseconds())
1061
1358
self.timeout = datetime.timedelta(0, 0, 0, value)
1062
# Emit D-Bus signal
1063
self.PropertyChanged(dbus.String(u"Timeout"),
1064
dbus.UInt64(value, variant_level=1))
1065
if getattr(self, u"disable_initiator_tag", None) is None:
1066
return
1067
1359
# Reschedule timeout
1068
gobject.source_remove(self.disable_initiator_tag)
1069
self.disable_initiator_tag = None
1070
time_to_die = (self.
1071
_timedelta_to_milliseconds((self
1072
.last_checked_ok
1073
+ self.timeout)
1074
- datetime.datetime
1075
.utcnow()))
1076
if time_to_die <= 0:
1077
# The timeout has passed
1078
self.disable()
1079
else:
1080
self.disable_initiator_tag = (gobject.timeout_add
1081
(time_to_die, self.disable))
1360
if self.enabled:
1361
now = datetime.datetime.utcnow()
1362
time_to_die = timedelta_to_milliseconds(
1363
(self.last_checked_ok + self.timeout) - now)
1364
if time_to_die <= 0:
1365
# The timeout has passed
1366
self.disable()
1367
else:
1368
self.expires = (now +
1369
datetime.timedelta(milliseconds =
1370
time_to_die))
1371
if (getattr(self, "disable_initiator_tag", None)
1372
is None):
1373
return
1374
gobject.source_remove(self.disable_initiator_tag)
1375
self.disable_initiator_tag = (gobject.timeout_add
1376
(time_to_die,
1377
self.disable))
1378
1379
# ExtendedTimeout - property
1380
@dbus_service_property(_interface, signature="t",
1381
access="readwrite")
1382
def ExtendedTimeout_dbus_property(self, value=None):
1383
if value is None: # get
1384
return dbus.UInt64(self.extended_timeout_milliseconds())
1385
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1082
1386
1083
1387
# Interval - property
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
1388
@dbus_service_property(_interface, signature="t",
1389
access="readwrite")
1086
1390
def Interval_dbus_property(self, value=None):
1087
1391
if value is None: # get
1088
1392
return dbus.UInt64(self.interval_milliseconds())
1089
1393
self.interval = datetime.timedelta(0, 0, 0, value)
1090
# Emit D-Bus signal
1091
self.PropertyChanged(dbus.String(u"Interval"),
1092
dbus.UInt64(value, variant_level=1))
1093
if getattr(self, u"checker_initiator_tag", None) is None:
1394
if getattr(self, "checker_initiator_tag", None) is None:
1094
1395
return
1095
# Reschedule checker run
1096
gobject.source_remove(self.checker_initiator_tag)
1097
self.checker_initiator_tag = (gobject.timeout_add
1098
(value, self.start_checker))
1099
self.start_checker() # Start one now, too
1100
1396
if self.enabled:
1397
# Reschedule checker run
1398
gobject.source_remove(self.checker_initiator_tag)
1399
self.checker_initiator_tag = (gobject.timeout_add
1400
(value, self.start_checker))
1401
self.start_checker() # Start one now, too
1402
1101
1403
# Checker - property
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
1404
@dbus_service_property(_interface, signature="s",
1405
access="readwrite")
1104
1406
def Checker_dbus_property(self, value=None):
1105
1407
if value is None: # get
1106
1408
return dbus.String(self.checker_command)
1107
self.checker_command = value
1108
# Emit D-Bus signal
1109
self.PropertyChanged(dbus.String(u"Checker"),
1110
dbus.String(self.checker_command,
1111
variant_level=1))
1409
self.checker_command = unicode(value)
1112
1410
1113
1411
# CheckerRunning - property
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
1412
@dbus_service_property(_interface, signature="b",
1413
access="readwrite")
1116
1414
def CheckerRunning_dbus_property(self, value=None):
1117
1415
if value is None: # get
1118
1416
return dbus.Boolean(self.checker is not None)
1122
1420
self.stop_checker()
1123
1421
1124
1422
# ObjectPath - property
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
1423
@dbus_service_property(_interface, signature="o", access="read")
1126
1424
def ObjectPath_dbus_property(self):
1127
1425
return self.dbus_object_path # is already a dbus.ObjectPath
1128
1426
1129
1427
# Secret = property
1130
@dbus_service_property(_interface, signature=u"ay",
1131
access=u"write", byte_arrays=True)
1428
@dbus_service_property(_interface, signature="ay",
1429
access="write", byte_arrays=True)
1132
1430
def Secret_dbus_property(self, value):
1133
1431
self.secret = str(value)
1134
1432
1141
1439
self._pipe.send(('init', fpr, address))
1142
1440
if not self._pipe.recv():
1143
1441
raise KeyError()
1144
1442
1145
1443
def __getattribute__(self, name):
1146
if(name == '_pipe'):
1444
if name == '_pipe':
1147
1445
return super(ProxyClient, self).__getattribute__(name)
1148
1446
self._pipe.send(('getattr', name))
1149
1447
data = self._pipe.recv()
1154
1452
self._pipe.send(('funcall', name, args, kwargs))
1155
1453
return self._pipe.recv()[1]
1156
1454
return func
1157
1455
1158
1456
def __setattr__(self, name, value):
1159
if(name == '_pipe'):
1457
if name == '_pipe':
1160
1458
return super(ProxyClient, self).__setattr__(name, value)
1161
1459
self._pipe.send(('setattr', name, value))
1162
1460
1163
1461
1462
class ClientDBusTransitional(ClientDBus):
1463
__metaclass__ = AlternateDBusNamesMetaclass
1464
1465
1164
1466
class ClientHandler(socketserver.BaseRequestHandler, object):
1165
1467
"""A class to handle client connections.
1166
1468
1169
1471
1170
1472
def handle(self):
1171
1473
with contextlib.closing(self.server.child_pipe) as child_pipe:
1172
logger.info(u"TCP connection from: %s",
1474
logger.info("TCP connection from: %s",
1173
1475
unicode(self.client_address))
1174
logger.debug(u"Pipe FD: %d",
1476
logger.debug("Pipe FD: %d",
1175
1477
self.server.child_pipe.fileno())
1176
1478
1177
1479
session = (gnutls.connection
1178
1480
.ClientSession(self.request,
1179
1481
gnutls.connection
1180
1482
.X509Credentials()))
1181
1483
1182
1484
# Note: gnutls.connection.X509Credentials is really a
1183
1485
# generic GnuTLS certificate credentials object so long as
1184
1486
# no X.509 keys are added to it. Therefore, we can use it
1185
1487
# here despite using OpenPGP certificates.
1186
1187
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1188
# u"+AES-256-CBC", u"+SHA1",
1189
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1190
# u"+DHE-DSS"))
1488
1489
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1490
# "+AES-256-CBC", "+SHA1",
1491
# "+COMP-NULL", "+CTYPE-OPENPGP",
1492
# "+DHE-DSS"))
1191
1493
# Use a fallback default, since this MUST be set.
1192
1494
priority = self.server.gnutls_priority
1193
1495
if priority is None:
1194
priority = u"NORMAL"
1496
priority = "NORMAL"
1195
1497
(gnutls.library.functions
1196
1498
.gnutls_priority_set_direct(session._c_object,
1197
1499
priority, None))
1198
1500
1199
1501
# Start communication using the Mandos protocol
1200
1502
# Get protocol number
1201
1503
line = self.request.makefile().readline()
1202
logger.debug(u"Protocol version: %r", line)
1504
logger.debug("Protocol version: %r", line)
1203
1505
try:
1204
1506
if int(line.strip().split()[0]) > 1:
1205
1507
raise RuntimeError
1206
except (ValueError, IndexError, RuntimeError), error:
1207
logger.error(u"Unknown protocol version: %s", error)
1508
except (ValueError, IndexError, RuntimeError) as error:
1509
logger.error("Unknown protocol version: %s", error)
1208
1510
return
1209
1511
1210
1512
# Start GnuTLS connection
1211
1513
try:
1212
1514
session.handshake()
1213
except gnutls.errors.GNUTLSError, error:
1214
logger.warning(u"Handshake failed: %s", error)
1515
except gnutls.errors.GNUTLSError as error:
1516
logger.warning("Handshake failed: %s", error)
1215
1517
# Do not run session.bye() here: the session is not
1216
1518
# established. Just abandon the request.
1217
1519
return
1218
logger.debug(u"Handshake succeeded")
1219
1520
logger.debug("Handshake succeeded")
1521
1220
1522
approval_required = False
1221
1523
try:
1222
1524
try:
1223
1525
fpr = self.fingerprint(self.peer_certificate
1224
1526
(session))
1225
except (TypeError, gnutls.errors.GNUTLSError), error:
1226
logger.warning(u"Bad certificate: %s", error)
1527
except (TypeError,
1528
gnutls.errors.GNUTLSError) as error:
1529
logger.warning("Bad certificate: %s", error)
1227
1530
return
1228
logger.debug(u"Fingerprint: %s", fpr)
1229
1531
logger.debug("Fingerprint: %s", fpr)
1532
1230
1533
try:
1231
1534
client = ProxyClient(child_pipe, fpr,
1232
1535
self.client_address)
1240
1543
1241
1544
while True:
1242
1545
if not client.enabled:
1243
logger.warning(u"Client %s is disabled",
1546
logger.info("Client %s is disabled",
1244
1547
client.name)
1245
1548
if self.server.use_dbus:
1246
1549
# Emit D-Bus signal
1247
client.Rejected("Disabled")
1550
client.Rejected("Disabled")
1248
1551
return
1249
1552
1250
if client._approved or not client.approval_delay:
1553
if client.approved or not client.approval_delay:
1251
1554
#We are approved or approval is disabled
1252
1555
break
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
1556
elif client.approved is None:
1557
logger.info("Client %s needs approval",
1255
1558
client.name)
1256
1559
if self.server.use_dbus:
1257
1560
# Emit D-Bus signal
1259
1562
client.approval_delay_milliseconds(),
1260
1563
client.approved_by_default)
1261
1564
else:
1262
logger.warning(u"Client %s was not approved",
1565
logger.warning("Client %s was not approved",
1263
1566
client.name)
1264
1567
if self.server.use_dbus:
1265
1568
# Emit D-Bus signal
1267
1570
return
1268
1571
1269
1572
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
1271
1573
time = datetime.datetime.now()
1272
1574
client.changedstate.acquire()
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1575
(client.changedstate.wait
1576
(float(client.timedelta_to_milliseconds(delay)
1577
/ 1000)))
1274
1578
client.changedstate.release()
1275
1579
time2 = datetime.datetime.now()
1276
1580
if (time2 - time) >= delay:
1291
1595
while sent_size < len(client.secret):
1292
1596
try:
1293
1597
sent = session.send(client.secret[sent_size:])
1294
except (gnutls.errors.GNUTLSError), error:
1598
except gnutls.errors.GNUTLSError as error:
1295
1599
logger.warning("gnutls send failed")
1296
1600
return
1297
logger.debug(u"Sent: %d, remaining: %d",
1601
logger.debug("Sent: %d, remaining: %d",
1298
1602
sent, len(client.secret)
1299
1603
- (sent_size + sent))
1300
1604
sent_size += sent
1301
1302
logger.info(u"Sending secret to %s", client.name)
1303
# bump the timeout as if seen
1304
client.checked_ok()
1605
1606
logger.info("Sending secret to %s", client.name)
1607
# bump the timeout using extended_timeout
1608
client.checked_ok(client.extended_timeout)
1305
1609
if self.server.use_dbus:
1306
1610
# Emit D-Bus signal
1307
1611
client.GotSecret()
1311
1615
client.approvals_pending -= 1
1312
1616
try:
1313
1617
session.bye()
1314
except (gnutls.errors.GNUTLSError), error:
1618
except gnutls.errors.GNUTLSError as error:
1315
1619
logger.warning("GnuTLS bye failed")
1316
1620
1317
1621
@staticmethod
1328
1632
.gnutls_certificate_get_peers
1329
1633
(session._c_object, ctypes.byref(list_size)))
1330
1634
if not bool(cert_list) and list_size.value != 0:
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
1635
raise gnutls.errors.GNUTLSError("error getting peer"
1636
" certificate")
1333
1637
if list_size.value == 0:
1334
1638
return None
1335
1639
cert = cert_list[0]
1361
1665
if crtverify.value != 0:
1362
1666
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1363
1667
raise (gnutls.errors.CertificateSecurityError
1364
(u"Verify failed"))
1668
("Verify failed"))
1365
1669
# New buffer for the fingerprint
1366
1670
buf = ctypes.create_string_buffer(20)
1367
1671
buf_len = ctypes.c_size_t()
1374
1678
# Convert the buffer to a Python bytestring
1375
1679
fpr = ctypes.string_at(buf, buf_len.value)
1376
1680
# Convert the bytestring to hexadecimal notation
1377
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1681
hex_fpr = binascii.hexlify(fpr).upper()
1378
1682
return hex_fpr
1379
1683
1380
1684
1383
1687
def sub_process_main(self, request, address):
1384
1688
try:
1385
1689
self.finish_request(request, address)
1386
except:
1690
except Exception:
1387
1691
self.handle_error(request, address)
1388
1692
self.close_request(request)
1389
1693
1390
1694
def process_request(self, request, address):
1391
1695
"""Start a new process to process the request."""
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
1696
proc = multiprocessing.Process(target = self.sub_process_main,
1697
args = (request,
1698
address))
1699
proc.start()
1700
return proc
1701
1394
1702
1395
1703
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1396
1704
""" adds a pipe to the MixIn """
1400
1708
This function creates a new pipe in self.pipe
1401
1709
"""
1402
1710
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1403
1404
super(MultiprocessingMixInWithPipe,
1405
self).process_request(request, client_address)
1711
1712
proc = MultiprocessingMixIn.process_request(self, request,
1713
client_address)
1406
1714
self.child_pipe.close()
1407
self.add_pipe(parent_pipe)
1408
1409
def add_pipe(self, parent_pipe):
1715
self.add_pipe(parent_pipe, proc)
1716
1717
def add_pipe(self, parent_pipe, proc):
1410
1718
"""Dummy function; override as necessary"""
1411
pass
1719
raise NotImplementedError
1720
1412
1721
1413
1722
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1414
1723
socketserver.TCPServer, object):
1432
1741
bind to an address or port if they were not specified."""
1433
1742
if self.interface is not None:
1434
1743
if SO_BINDTODEVICE is None:
1435
logger.error(u"SO_BINDTODEVICE does not exist;"
1436
u" cannot bind to interface %s",
1744
logger.error("SO_BINDTODEVICE does not exist;"
1745
" cannot bind to interface %s",
1437
1746
self.interface)
1438
1747
else:
1439
1748
try:
1440
1749
self.socket.setsockopt(socket.SOL_SOCKET,
1441
1750
SO_BINDTODEVICE,
1442
1751
str(self.interface
1443
+ u'\0'))
1444
except socket.error, error:
1752
+ '\0'))
1753
except socket.error as error:
1445
1754
if error[0] == errno.EPERM:
1446
logger.error(u"No permission to"
1447
u" bind to interface %s",
1755
logger.error("No permission to"
1756
" bind to interface %s",
1448
1757
self.interface)
1449
1758
elif error[0] == errno.ENOPROTOOPT:
1450
logger.error(u"SO_BINDTODEVICE not available;"
1451
u" cannot bind to interface %s",
1759
logger.error("SO_BINDTODEVICE not available;"
1760
" cannot bind to interface %s",
1452
1761
self.interface)
1453
1762
else:
1454
1763
raise
1456
1765
if self.server_address[0] or self.server_address[1]:
1457
1766
if not self.server_address[0]:
1458
1767
if self.address_family == socket.AF_INET6:
1459
any_address = u"::" # in6addr_any
1768
any_address = "::" # in6addr_any
1460
1769
else:
1461
1770
any_address = socket.INADDR_ANY
1462
1771
self.server_address = (any_address,
1489
1798
self.enabled = False
1490
1799
self.clients = clients
1491
1800
if self.clients is None:
1492
self.clients = set()
1801
self.clients = {}
1493
1802
self.use_dbus = use_dbus
1494
1803
self.gnutls_priority = gnutls_priority
1495
1804
IPv6_TCPServer.__init__(self, server_address,
1499
1808
def server_activate(self):
1500
1809
if self.enabled:
1501
1810
return socketserver.TCPServer.server_activate(self)
1811
1502
1812
def enable(self):
1503
1813
self.enabled = True
1504
def add_pipe(self, parent_pipe):
1814
1815
def add_pipe(self, parent_pipe, proc):
1505
1816
# Call "handle_ipc" for both data and EOF events
1506
1817
gobject.io_add_watch(parent_pipe.fileno(),
1507
1818
gobject.IO_IN | gobject.IO_HUP,
1508
1819
functools.partial(self.handle_ipc,
1509
parent_pipe = parent_pipe))
1510
1820
parent_pipe =
1821
parent_pipe,
1822
proc = proc))
1823
1511
1824
def handle_ipc(self, source, condition, parent_pipe=None,
1512
client_object=None):
1825
proc = None, client_object=None):
1513
1826
condition_names = {
1514
gobject.IO_IN: u"IN", # There is data to read.
1515
gobject.IO_OUT: u"OUT", # Data can be written (without
1827
gobject.IO_IN: "IN", # There is data to read.
1828
gobject.IO_OUT: "OUT", # Data can be written (without
1516
1829
# blocking).
1517
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1518
gobject.IO_ERR: u"ERR", # Error condition.
1519
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1830
gobject.IO_PRI: "PRI", # There is urgent data to read.
1831
gobject.IO_ERR: "ERR", # Error condition.
1832
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1520
1833
# broken, usually for pipes and
1521
1834
# sockets).
1522
1835
}
1524
1837
for cond, name in
1525
1838
condition_names.iteritems()
1526
1839
if cond & condition)
1527
# error or the other end of multiprocessing.Pipe has closed
1840
# error, or the other end of multiprocessing.Pipe has closed
1528
1841
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1842
# Wait for other process to exit
1843
proc.join()
1529
1844
return False
1530
1845
1531
1846
# Read a request from the child
1536
1851
fpr = request[1]
1537
1852
address = request[2]
1538
1853
1539
for c in self.clients:
1854
for c in self.clients.itervalues():
1540
1855
if c.fingerprint == fpr:
1541
1856
client = c
1542
1857
break
1543
1858
else:
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
1859
logger.info("Client not found for fingerprint: %s, ad"
1860
"dress: %s", fpr, address)
1546
1861
if self.use_dbus:
1547
1862
# Emit D-Bus signal
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
1863
mandos_dbus_service.ClientNotFound(fpr,
1864
address[0])
1549
1865
parent_pipe.send(False)
1550
1866
return False
1551
1867
1552
1868
gobject.io_add_watch(parent_pipe.fileno(),
1553
1869
gobject.IO_IN | gobject.IO_HUP,
1554
1870
functools.partial(self.handle_ipc,
1555
parent_pipe = parent_pipe,
1556
client_object = client))
1871
parent_pipe =
1872
parent_pipe,
1873
proc = proc,
1874
client_object =
1875
client))
1557
1876
parent_pipe.send(True)
1558
# remove the old hook in favor of the new above hook on same fileno
1877
# remove the old hook in favor of the new above hook on
1878
# same fileno
1559
1879
return False
1560
1880
if command == 'funcall':
1561
1881
funcname = request[1]
1562
1882
args = request[2]
1563
1883
kwargs = request[3]
1564
1884
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1566
1885
parent_pipe.send(('data', getattr(client_object,
1886
funcname)(*args,
1887
**kwargs)))
1888
1567
1889
if command == 'getattr':
1568
1890
attrname = request[1]
1569
1891
if callable(client_object.__getattribute__(attrname)):
1570
1892
parent_pipe.send(('function',))
1571
1893
else:
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1894
parent_pipe.send(('data', client_object
1895
.__getattribute__(attrname)))
1573
1896
1574
1897
if command == 'setattr':
1575
1898
attrname = request[1]
1576
1899
value = request[2]
1577
1900
setattr(client_object, attrname, value)
1578
1901
1579
1902
return True
1580
1903
1581
1904
1582
1905
def string_to_delta(interval):
1583
1906
"""Parse a string and return a datetime.timedelta
1584
1907
1585
>>> string_to_delta(u'7d')
1908
>>> string_to_delta('7d')
1586
1909
datetime.timedelta(7)
1587
>>> string_to_delta(u'60s')
1910
>>> string_to_delta('60s')
1588
1911
datetime.timedelta(0, 60)
1589
>>> string_to_delta(u'60m')
1912
>>> string_to_delta('60m')
1590
1913
datetime.timedelta(0, 3600)
1591
>>> string_to_delta(u'24h')
1914
>>> string_to_delta('24h')
1592
1915
datetime.timedelta(1)
1593
>>> string_to_delta(u'1w')
1916
>>> string_to_delta('1w')
1594
1917
datetime.timedelta(7)
1595
>>> string_to_delta(u'5m 30s')
1918
>>> string_to_delta('5m 30s')
1596
1919
datetime.timedelta(0, 330)
1597
1920
"""
1598
1921
timevalue = datetime.timedelta(0)
1600
1923
try:
1601
1924
suffix = unicode(s[-1])
1602
1925
value = int(s[:-1])
1603
if suffix == u"d":
1926
if suffix == "d":
1604
1927
delta = datetime.timedelta(value)
1605
elif suffix == u"s":
1928
elif suffix == "s":
1606
1929
delta = datetime.timedelta(0, value)
1607
elif suffix == u"m":
1930
elif suffix == "m":
1608
1931
delta = datetime.timedelta(0, 0, 0, 0, value)
1609
elif suffix == u"h":
1932
elif suffix == "h":
1610
1933
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1611
elif suffix == u"w":
1934
elif suffix == "w":
1612
1935
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1613
1936
else:
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
1937
raise ValueError("Unknown suffix %r" % suffix)
1938
except (ValueError, IndexError) as e:
1939
raise ValueError(*(e.args))
1617
1940
timevalue += delta
1618
1941
return timevalue
1619
1942
1620
1943
1621
def if_nametoindex(interface):
1622
"""Call the C function if_nametoindex(), or equivalent
1623
1624
Note: This function cannot accept a unicode string."""
1625
global if_nametoindex
1626
try:
1627
if_nametoindex = (ctypes.cdll.LoadLibrary
1628
(ctypes.util.find_library(u"c"))
1629
.if_nametoindex)
1630
except (OSError, AttributeError):
1631
logger.warning(u"Doing if_nametoindex the hard way")
1632
def if_nametoindex(interface):
1633
"Get an interface index the hard way, i.e. using fcntl()"
1634
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1635
with contextlib.closing(socket.socket()) as s:
1636
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1637
struct.pack(str(u"16s16x"),
1638
interface))
1639
interface_index = struct.unpack(str(u"I"),
1640
ifreq[16:20])[0]
1641
return interface_index
1642
return if_nametoindex(interface)
1643
1644
1645
1944
def daemon(nochdir = False, noclose = False):
1646
1945
"""See daemon(3). Standard BSD Unix function.
1647
1946
1650
1949
sys.exit()
1651
1950
os.setsid()
1652
1951
if not nochdir:
1653
os.chdir(u"/")
1952
os.chdir("/")
1654
1953
if os.fork():
1655
1954
sys.exit()
1656
1955
if not noclose:
1658
1957
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1659
1958
if not stat.S_ISCHR(os.fstat(null).st_mode):
1660
1959
raise OSError(errno.ENODEV,
1661
u"%s not a character device"
1960
"%s not a character device"
1662
1961
% os.path.devnull)
1663
1962
os.dup2(null, sys.stdin.fileno())
1664
1963
os.dup2(null, sys.stdout.fileno())
1672
1971
##################################################################
1673
1972
# Parsing of options, both command line and config file
1674
1973
1675
parser = optparse.OptionParser(version = "%%prog %s" % version)
1676
parser.add_option("-i", u"--interface", type=u"string",
1677
metavar="IF", help=u"Bind to interface IF")
1678
parser.add_option("-a", u"--address", type=u"string",
1679
help=u"Address to listen for requests on")
1680
parser.add_option("-p", u"--port", type=u"int",
1681
help=u"Port number to receive requests on")
1682
parser.add_option("--check", action=u"store_true",
1683
help=u"Run self-test")
1684
parser.add_option("--debug", action=u"store_true",
1685
help=u"Debug mode; run in foreground and log to"
1686
u" terminal")
1687
parser.add_option("--debuglevel", type=u"string", metavar="LEVEL",
1688
help=u"Debug level for stdout output")
1689
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1690
u" priority string (see GnuTLS documentation)")
1691
parser.add_option("--servicename", type=u"string",
1692
metavar=u"NAME", help=u"Zeroconf service name")
1693
parser.add_option("--configdir", type=u"string",
1694
default=u"/etc/mandos", metavar=u"DIR",
1695
help=u"Directory to search for configuration"
1696
u" files")
1697
parser.add_option("--no-dbus", action=u"store_false",
1698
dest=u"use_dbus", help=u"Do not provide D-Bus"
1699
u" system bus interface")
1700
parser.add_option("--no-ipv6", action=u"store_false",
1701
dest=u"use_ipv6", help=u"Do not use IPv6")
1702
options = parser.parse_args()[0]
1974
parser = argparse.ArgumentParser()
1975
parser.add_argument("-v", "--version", action="version",
1976
version = "%%(prog)s %s" % version,
1977
help="show version number and exit")
1978
parser.add_argument("-i", "--interface", metavar="IF",
1979
help="Bind to interface IF")
1980
parser.add_argument("-a", "--address",
1981
help="Address to listen for requests on")
1982
parser.add_argument("-p", "--port", type=int,
1983
help="Port number to receive requests on")
1984
parser.add_argument("--check", action="store_true",
1985
help="Run self-test")
1986
parser.add_argument("--debug", action="store_true",
1987
help="Debug mode; run in foreground and log"
1988
" to terminal")
1989
parser.add_argument("--debuglevel", metavar="LEVEL",
1990
help="Debug level for stdout output")
1991
parser.add_argument("--priority", help="GnuTLS"
1992
" priority string (see GnuTLS documentation)")
1993
parser.add_argument("--servicename",
1994
metavar="NAME", help="Zeroconf service name")
1995
parser.add_argument("--configdir",
1996
default="/etc/mandos", metavar="DIR",
1997
help="Directory to search for configuration"
1998
" files")
1999
parser.add_argument("--no-dbus", action="store_false",
2000
dest="use_dbus", help="Do not provide D-Bus"
2001
" system bus interface")
2002
parser.add_argument("--no-ipv6", action="store_false",
2003
dest="use_ipv6", help="Do not use IPv6")
2004
parser.add_argument("--no-restore", action="store_false",
2005
dest="restore", help="Do not restore stored"
2006
" state")
2007
parser.add_argument("--statedir", metavar="DIR",
2008
help="Directory to save/restore state in")
2009
2010
options = parser.parse_args()
1703
2011
1704
2012
if options.check:
1705
2013
import doctest
1707
2015
sys.exit()
1708
2016
1709
2017
# Default values for config file for server-global settings
1710
server_defaults = { u"interface": u"",
1711
u"address": u"",
1712
u"port": u"",
1713
u"debug": u"False",
1714
u"priority":
1715
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1716
u"servicename": u"Mandos",
1717
u"use_dbus": u"True",
1718
u"use_ipv6": u"True",
1719
u"debuglevel": u"",
2018
server_defaults = { "interface": "",
2019
"address": "",
2020
"port": "",
2021
"debug": "False",
2022
"priority":
2023
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2024
"servicename": "Mandos",
2025
"use_dbus": "True",
2026
"use_ipv6": "True",
2027
"debuglevel": "",
2028
"restore": "True",
2029
"statedir": "/var/lib/mandos"
1720
2030
}
1721
2031
1722
2032
# Parse config file for server-global settings
1723
2033
server_config = configparser.SafeConfigParser(server_defaults)
1724
2034
del server_defaults
1725
2035
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
2036
"mandos.conf"))
1727
2037
# Convert the SafeConfigParser object to a dict
1728
2038
server_settings = server_config.defaults()
1729
2039
# Use the appropriate methods on the non-string config options
1730
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1731
server_settings[option] = server_config.getboolean(u"DEFAULT",
2040
for option in ("debug", "use_dbus", "use_ipv6"):
2041
server_settings[option] = server_config.getboolean("DEFAULT",
1732
2042
option)
1733
2043
if server_settings["port"]:
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
2044
server_settings["port"] = server_config.getint("DEFAULT",
2045
"port")
1736
2046
del server_config
1737
2047
1738
2048
# Override the settings from the config file with command line
1739
2049
# options, if set.
1740
for option in (u"interface", u"address", u"port", u"debug",
1741
u"priority", u"servicename", u"configdir",
1742
u"use_dbus", u"use_ipv6", u"debuglevel"):
2050
for option in ("interface", "address", "port", "debug",
2051
"priority", "servicename", "configdir",
2052
"use_dbus", "use_ipv6", "debuglevel", "restore",
2053
"statedir"):
1743
2054
value = getattr(options, option)
1744
2055
if value is not None:
1745
2056
server_settings[option] = value
1753
2064
##################################################################
1754
2065
1755
2066
# For convenience
1756
debug = server_settings[u"debug"]
1757
debuglevel = server_settings[u"debuglevel"]
1758
use_dbus = server_settings[u"use_dbus"]
1759
use_ipv6 = server_settings[u"use_ipv6"]
1760
1761
if server_settings[u"servicename"] != u"Mandos":
2067
debug = server_settings["debug"]
2068
debuglevel = server_settings["debuglevel"]
2069
use_dbus = server_settings["use_dbus"]
2070
use_ipv6 = server_settings["use_ipv6"]
2071
stored_state_path = os.path.join(server_settings["statedir"],
2072
stored_state_file)
2073
2074
if debug:
2075
initlogger(debug, logging.DEBUG)
2076
else:
2077
if not debuglevel:
2078
initlogger(debug)
2079
else:
2080
level = getattr(logging, debuglevel.upper())
2081
initlogger(debug, level)
2082
2083
if server_settings["servicename"] != "Mandos":
1762
2084
syslogger.setFormatter(logging.Formatter
1763
(u'Mandos (%s) [%%(process)d]:'
1764
u' %%(levelname)s: %%(message)s'
1765
% server_settings[u"servicename"]))
2085
('Mandos (%s) [%%(process)d]:'
2086
' %%(levelname)s: %%(message)s'
2087
% server_settings["servicename"]))
1766
2088
1767
2089
# Parse config file with clients
1768
client_defaults = { u"timeout": u"1h",
1769
u"interval": u"5m",
1770
u"checker": u"fping -q -- %%(host)s",
1771
u"host": u"",
1772
u"approval_delay": u"0s",
1773
u"approval_duration": u"1s",
1774
}
1775
client_config = configparser.SafeConfigParser(client_defaults)
1776
client_config.read(os.path.join(server_settings[u"configdir"],
1777
u"clients.conf"))
2090
client_config = configparser.SafeConfigParser(Client
2091
.client_defaults)
2092
client_config.read(os.path.join(server_settings["configdir"],
2093
"clients.conf"))
1778
2094
1779
2095
global mandos_dbus_service
1780
2096
mandos_dbus_service = None
1781
2097
1782
tcp_server = MandosServer((server_settings[u"address"],
1783
server_settings[u"port"]),
2098
tcp_server = MandosServer((server_settings["address"],
2099
server_settings["port"]),
1784
2100
ClientHandler,
1785
interface=(server_settings[u"interface"]
2101
interface=(server_settings["interface"]
1786
2102
or None),
1787
2103
use_ipv6=use_ipv6,
1788
2104
gnutls_priority=
1789
server_settings[u"priority"],
2105
server_settings["priority"],
1790
2106
use_dbus=use_dbus)
1791
2107
if not debug:
1792
pidfilename = u"/var/run/mandos.pid"
2108
pidfilename = "/var/run/mandos.pid"
1793
2109
try:
1794
pidfile = open(pidfilename, u"w")
2110
pidfile = open(pidfilename, "w")
1795
2111
except IOError:
1796
logger.error(u"Could not open file %r", pidfilename)
2112
logger.error("Could not open file %r", pidfilename)
1797
2113
1798
2114
try:
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
2115
uid = pwd.getpwnam("_mandos").pw_uid
2116
gid = pwd.getpwnam("_mandos").pw_gid
1801
2117
except KeyError:
1802
2118
try:
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
2119
uid = pwd.getpwnam("mandos").pw_uid
2120
gid = pwd.getpwnam("mandos").pw_gid
1805
2121
except KeyError:
1806
2122
try:
1807
uid = pwd.getpwnam(u"nobody").pw_uid
1808
gid = pwd.getpwnam(u"nobody").pw_gid
2123
uid = pwd.getpwnam("nobody").pw_uid
2124
gid = pwd.getpwnam("nobody").pw_gid
1809
2125
except KeyError:
1810
2126
uid = 65534
1811
2127
gid = 65534
1812
2128
try:
1813
2129
os.setgid(gid)
1814
2130
os.setuid(uid)
1815
except OSError, error:
2131
except OSError as error:
1816
2132
if error[0] != errno.EPERM:
1817
2133
raise error
1818
2134
1819
if not debug and not debuglevel:
1820
syslogger.setLevel(logging.WARNING)
1821
console.setLevel(logging.WARNING)
1822
if debuglevel:
1823
level = getattr(logging, debuglevel.upper())
1824
syslogger.setLevel(level)
1825
console.setLevel(level)
1826
1827
2135
if debug:
1828
2136
# Enable all possible GnuTLS debugging
1829
2137
1833
2141
1834
2142
@gnutls.library.types.gnutls_log_func
1835
2143
def debug_gnutls(level, string):
1836
logger.debug(u"GnuTLS: %s", string[:-1])
2144
logger.debug("GnuTLS: %s", string[:-1])
1837
2145
1838
2146
(gnutls.library.functions
1839
2147
.gnutls_global_set_log_function(debug_gnutls))
1843
2151
os.dup2(null, sys.stdin.fileno())
1844
2152
if null > 2:
1845
2153
os.close(null)
1846
else:
1847
# No console logging
1848
logger.removeHandler(console)
1849
2154
2155
# Need to fork before connecting to D-Bus
2156
if not debug:
2157
# Close all input and output, do double fork, etc.
2158
daemon()
2159
2160
gobject.threads_init()
1850
2161
1851
2162
global main_loop
1852
2163
# From the Avahi example code
1856
2167
# End of Avahi example code
1857
2168
if use_dbus:
1858
2169
try:
1859
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2170
bus_name = dbus.service.BusName("se.recompile.Mandos",
1860
2171
bus, do_not_queue=True)
1861
except dbus.exceptions.NameExistsException, e:
1862
logger.error(unicode(e) + u", disabling D-Bus")
2172
old_bus_name = (dbus.service.BusName
2173
("se.bsnet.fukt.Mandos", bus,
2174
do_not_queue=True))
2175
except dbus.exceptions.NameExistsException as e:
2176
logger.error(unicode(e) + ", disabling D-Bus")
1863
2177
use_dbus = False
1864
server_settings[u"use_dbus"] = False
2178
server_settings["use_dbus"] = False
1865
2179
tcp_server.use_dbus = False
1866
2180
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1867
service = AvahiService(name = server_settings[u"servicename"],
1868
servicetype = u"_mandos._tcp",
1869
protocol = protocol, bus = bus)
2181
service = AvahiServiceToSyslog(name =
2182
server_settings["servicename"],
2183
servicetype = "_mandos._tcp",
2184
protocol = protocol, bus = bus)
1870
2185
if server_settings["interface"]:
1871
2186
service.interface = (if_nametoindex
1872
(str(server_settings[u"interface"])))
1873
1874
if not debug:
1875
# Close all input and output, do double fork, etc.
1876
daemon()
1877
2187
(str(server_settings["interface"])))
2188
1878
2189
global multiprocessing_manager
1879
2190
multiprocessing_manager = multiprocessing.Manager()
1880
2191
1881
2192
client_class = Client
1882
2193
if use_dbus:
1883
client_class = functools.partial(ClientDBus, bus = bus)
1884
def client_config_items(config, section):
1885
special_settings = {
1886
"approved_by_default":
1887
lambda: config.getboolean(section,
1888
"approved_by_default"),
1889
}
1890
for name, value in config.items(section):
2194
client_class = functools.partial(ClientDBusTransitional,
2195
bus = bus)
2196
2197
client_settings = Client.config_parser(client_config)
2198
old_client_settings = {}
2199
clients_data = {}
2200
2201
# Get client data and settings from last running state.
2202
if server_settings["restore"]:
2203
try:
2204
with open(stored_state_path, "rb") as stored_state:
2205
clients_data, old_client_settings = (pickle.load
2206
(stored_state))
2207
os.remove(stored_state_path)
2208
except IOError as e:
2209
logger.warning("Could not load persistent state: {0}"
2210
.format(e))
2211
if e.errno != errno.ENOENT:
2212
raise
2213
except EOFError as e:
2214
logger.warning("Could not load persistent state: "
2215
"EOFError: {0}".format(e))
2216
2217
with PGPEngine() as pgp:
2218
for client_name, client in clients_data.iteritems():
2219
# Decide which value to use after restoring saved state.
2220
# We have three different values: Old config file,
2221
# new config file, and saved state.
2222
# New config value takes precedence if it differs from old
2223
# config value, otherwise use saved state.
2224
for name, value in client_settings[client_name].items():
2225
try:
2226
# For each value in new config, check if it
2227
# differs from the old config value (Except for
2228
# the "secret" attribute)
2229
if (name != "secret" and
2230
value != old_client_settings[client_name]
2231
[name]):
2232
client[name] = value
2233
except KeyError:
2234
pass
2235
2236
# Clients who has passed its expire date can still be
2237
# enabled if its last checker was successful. Clients
2238
# whose checker succeeded before we stored its state is
2239
# assumed to have successfully run all checkers during
2240
# downtime.
2241
if client["enabled"]:
2242
if datetime.datetime.utcnow() >= client["expires"]:
2243
if not client["last_checked_ok"]:
2244
logger.warning(
2245
"disabling client {0} - Client never "
2246
"performed a successful checker"
2247
.format(client_name))
2248
client["enabled"] = False
2249
elif client["last_checker_status"] != 0:
2250
logger.warning(
2251
"disabling client {0} - Client "
2252
"last checker failed with error code {1}"
2253
.format(client_name,
2254
client["last_checker_status"]))
2255
client["enabled"] = False
2256
else:
2257
client["expires"] = (datetime.datetime
2258
.utcnow()
2259
+ client["timeout"])
2260
logger.debug("Last checker succeeded,"
2261
" keeping {0} enabled"
2262
.format(client_name))
1891
2263
try:
1892
yield (name, special_settings[name]())
1893
except KeyError:
1894
yield (name, value)
1895
1896
tcp_server.clients.update(set(
1897
client_class(name = section,
1898
config= dict(client_config_items(
1899
client_config, section)))
1900
for section in client_config.sections()))
2264
client["secret"] = (
2265
pgp.decrypt(client["encrypted_secret"],
2266
client_settings[client_name]
2267
["secret"]))
2268
except PGPError:
2269
# If decryption fails, we use secret from new settings
2270
logger.debug("Failed to decrypt {0} old secret"
2271
.format(client_name))
2272
client["secret"] = (
2273
client_settings[client_name]["secret"])
2274
2275
2276
# Add/remove clients based on new changes made to config
2277
for client_name in (set(old_client_settings)
2278
- set(client_settings)):
2279
del clients_data[client_name]
2280
for client_name in (set(client_settings)
2281
- set(old_client_settings)):
2282
clients_data[client_name] = client_settings[client_name]
2283
2284
# Create all client objects
2285
for client_name, client in clients_data.iteritems():
2286
tcp_server.clients[client_name] = client_class(
2287
name = client_name, settings = client)
2288
1901
2289
if not tcp_server.clients:
1902
logger.warning(u"No clients defined")
2290
logger.warning("No clients defined")
1903
2291
1904
2292
if not debug:
1905
2293
try:
1906
2294
with pidfile:
1907
2295
pid = os.getpid()
1908
pidfile.write(str(pid) + "\n")
2296
pidfile.write(str(pid) + "\n".encode("utf-8"))
1909
2297
del pidfile
1910
2298
except IOError:
1911
logger.error(u"Could not write to file %r with PID %d",
2299
logger.error("Could not write to file %r with PID %d",
1912
2300
pidfilename, pid)
1913
2301
except NameError:
1914
2302
# "pidfile" was never created
1915
2303
pass
1916
2304
del pidfilename
1917
1918
2305
signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
2306
1920
2307
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1921
2308
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1922
2309
1924
2311
class MandosDBusService(dbus.service.Object):
1925
2312
"""A D-Bus proxy object"""
1926
2313
def __init__(self):
1927
dbus.service.Object.__init__(self, bus, u"/")
1928
_interface = u"se.bsnet.fukt.Mandos"
2314
dbus.service.Object.__init__(self, bus, "/")
2315
_interface = "se.recompile.Mandos"
1929
2316
1930
@dbus.service.signal(_interface, signature=u"o")
2317
@dbus.service.signal(_interface, signature="o")
1931
2318
def ClientAdded(self, objpath):
1932
2319
"D-Bus signal"
1933
2320
pass
1934
2321
1935
@dbus.service.signal(_interface, signature=u"ss")
2322
@dbus.service.signal(_interface, signature="ss")
1936
2323
def ClientNotFound(self, fingerprint, address):
1937
2324
"D-Bus signal"
1938
2325
pass
1939
2326
1940
@dbus.service.signal(_interface, signature=u"os")
2327
@dbus.service.signal(_interface, signature="os")
1941
2328
def ClientRemoved(self, objpath, name):
1942
2329
"D-Bus signal"
1943
2330
pass
1944
2331
1945
@dbus.service.method(_interface, out_signature=u"ao")
2332
@dbus.service.method(_interface, out_signature="ao")
1946
2333
def GetAllClients(self):
1947
2334
"D-Bus method"
1948
2335
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
2336
for c in
2337
tcp_server.clients.itervalues())
1950
2338
1951
2339
@dbus.service.method(_interface,
1952
out_signature=u"a{oa{sv}}")
2340
out_signature="a{oa{sv}}")
1953
2341
def GetAllClientsWithProperties(self):
1954
2342
"D-Bus method"
1955
2343
return dbus.Dictionary(
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
2344
((c.dbus_object_path, c.GetAll(""))
2345
for c in tcp_server.clients.itervalues()),
2346
signature="oa{sv}")
1959
2347
1960
@dbus.service.method(_interface, in_signature=u"o")
2348
@dbus.service.method(_interface, in_signature="o")
1961
2349
def RemoveClient(self, object_path):
1962
2350
"D-Bus method"
1963
for c in tcp_server.clients:
2351
for c in tcp_server.clients.itervalues():
1964
2352
if c.dbus_object_path == object_path:
1965
tcp_server.clients.remove(c)
2353
del tcp_server.clients[c.name]
1966
2354
c.remove_from_connection()
1967
2355
# Don't signal anything except ClientRemoved
1968
2356
c.disable(quiet=True)
1973
2361
1974
2362
del _interface
1975
2363
1976
mandos_dbus_service = MandosDBusService()
2364
class MandosDBusServiceTransitional(MandosDBusService):
2365
__metaclass__ = AlternateDBusNamesMetaclass
2366
mandos_dbus_service = MandosDBusServiceTransitional()
1977
2367
1978
2368
def cleanup():
1979
2369
"Cleanup function; run on exit"
1980
2370
service.cleanup()
1981
2371
2372
multiprocessing.active_children()
2373
if not (tcp_server.clients or client_settings):
2374
return
2375
2376
# Store client before exiting. Secrets are encrypted with key
2377
# based on what config file has. If config file is
2378
# removed/edited, old secret will thus be unrecovable.
2379
clients = {}
2380
with PGPEngine() as pgp:
2381
for client in tcp_server.clients.itervalues():
2382
key = client_settings[client.name]["secret"]
2383
client.encrypted_secret = pgp.encrypt(client.secret,
2384
key)
2385
client_dict = {}
2386
2387
# A list of attributes that can not be pickled
2388
# + secret.
2389
exclude = set(("bus", "changedstate", "secret",
2390
"checker"))
2391
for name, typ in (inspect.getmembers
2392
(dbus.service.Object)):
2393
exclude.add(name)
2394
2395
client_dict["encrypted_secret"] = (client
2396
.encrypted_secret)
2397
for attr in client.client_structure:
2398
if attr not in exclude:
2399
client_dict[attr] = getattr(client, attr)
2400
2401
clients[client.name] = client_dict
2402
del client_settings[client.name]["secret"]
2403
2404
try:
2405
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2406
prefix="clients-",
2407
dir=os.path.dirname
2408
(stored_state_path))
2409
with os.fdopen(tempfd, "wb") as stored_state:
2410
pickle.dump((clients, client_settings), stored_state)
2411
os.rename(tempname, stored_state_path)
2412
except (IOError, OSError) as e:
2413
logger.warning("Could not save persistent state: {0}"
2414
.format(e))
2415
if not debug:
2416
try:
2417
os.remove(tempname)
2418
except NameError:
2419
pass
2420
if e.errno not in set((errno.ENOENT, errno.EACCES,
2421
errno.EEXIST)):
2422
raise e
2423
2424
# Delete all clients, and settings from config
1982
2425
while tcp_server.clients:
1983
client = tcp_server.clients.pop()
2426
name, client = tcp_server.clients.popitem()
1984
2427
if use_dbus:
1985
2428
client.remove_from_connection()
1986
client.disable_hook = None
1987
2429
# Don't signal anything except ClientRemoved
1988
2430
client.disable(quiet=True)
1989
2431
if use_dbus:
1990
2432
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2433
mandos_dbus_service.ClientRemoved(client
2434
.dbus_object_path,
1992
2435
client.name)
2436
client_settings.clear()
1993
2437
1994
2438
atexit.register(cleanup)
1995
2439
1996
for client in tcp_server.clients:
2440
for client in tcp_server.clients.itervalues():
1997
2441
if use_dbus:
1998
2442
# Emit D-Bus signal
1999
2443
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2000
client.enable()
2444
# Need to initiate checking of clients
2445
if client.enabled:
2446
client.init_checker()
2001
2447
2002
2448
tcp_server.enable()
2003
2449
tcp_server.server_activate()
2005
2451
# Find out what port we got
2006
2452
service.port = tcp_server.socket.getsockname()[1]
2007
2453
if use_ipv6:
2008
logger.info(u"Now listening on address %r, port %d,"
2454
logger.info("Now listening on address %r, port %d,"
2009
2455
" flowinfo %d, scope_id %d"
2010
2456
% tcp_server.socket.getsockname())
2011
2457
else: # IPv4
2012
logger.info(u"Now listening on address %r, port %d"
2458
logger.info("Now listening on address %r, port %d"
2013
2459
% tcp_server.socket.getsockname())
2014
2460
2015
2461
#service.interface = tcp_server.socket.getsockname()[3]
2018
2464
# From the Avahi example code
2019
2465
try:
2020
2466
service.activate()
2021
except dbus.exceptions.DBusException, error:
2022
logger.critical(u"DBusException: %s", error)
2467
except dbus.exceptions.DBusException as error:
2468
logger.critical("DBusException: %s", error)
2023
2469
cleanup()
2024
2470
sys.exit(1)
2025
2471
# End of Avahi example code
2029
2475
(tcp_server.handle_request
2030
2476
(*args[2:], **kwargs) or True))
2031
2477
2032
logger.debug(u"Starting main loop")
2478
logger.debug("Starting main loop")
2033
2479
main_loop.run()
2034
except AvahiError, error:
2035
logger.critical(u"AvahiError: %s", error)
2480
except AvahiError as error:
2481
logger.critical("AvahiError: %s", error)
2036
2482
cleanup()
2037
2483
sys.exit(1)
2038
2484
except KeyboardInterrupt:
2039
2485
if debug:
2040
print >> sys.stderr
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
2486
print("", file=sys.stderr)
2487
logger.debug("Server received KeyboardInterrupt")
2488
logger.debug("Server exiting")
2043
2489
# Must run before the D-Bus bus name gets deregistered
2044
2490
cleanup()
2045
2491
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0