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- Committer: teddy at recompile
- Date: 2011-12-27 14:15:40 UTC
- Revision ID: teddy@recompile.se-20111227141540-ajrabf33q59jfa7t
Reorder TODO entries
- 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
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# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 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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#
31
# 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
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68
65
69
import dbus
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70
import dbus.service
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75
import ctypes.util
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76
import xml.dom.minidom
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77
import inspect
78
import GnuPGInterface
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79
75
80
try:
76
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
80
85
except ImportError:
81
86
SO_BINDTODEVICE = None
82
87
83
84
version = "1.0.14"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
version = "1.4.1"
89
stored_state_file = "clients.pickle"
90
91
logger = logging.getLogger()
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)
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address = str("/dev/log")))
95
96
try:
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
100
except (OSError, AttributeError):
101
def if_nametoindex(interface):
102
"Get an interface index the hard way, i.e. using fcntl()"
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
with contextlib.closing(socket.socket()) as s:
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
110
return interface_index
111
112
113
def initlogger(debug, level=logging.WARNING):
114
"""init logger and add loglevel"""
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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'
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' [%(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
147
def __enter__(self):
148
return self
149
150
def __exit__ (self, exc_type, exc_value, traceback):
151
self._cleanup()
152
return False
153
154
def __del__(self):
155
self._cleanup()
156
157
def _cleanup(self):
158
if self.tempdir is not None:
159
# Delete contents of tempdir
160
for root, dirs, files in os.walk(self.tempdir,
161
topdown = False):
162
for filename in files:
163
os.remove(os.path.join(root, filename))
164
for dirname in dirs:
165
os.rmdir(os.path.join(root, dirname))
166
# Remove tempdir
167
os.rmdir(self.tempdir)
168
self.tempdir = None
169
170
def password_encode(self, password):
171
# Passphrase can not be empty and can not contain newlines or
172
# NUL bytes. So we prefix it and hex encode it.
173
return b"mandos" + binascii.hexlify(password)
174
175
def encrypt(self, data, password):
176
self.gnupg.passphrase = self.password_encode(password)
177
with open(os.devnull) as devnull:
178
try:
179
proc = self.gnupg.run(['--symmetric'],
180
create_fhs=['stdin', 'stdout'],
181
attach_fhs={'stderr': devnull})
182
with contextlib.closing(proc.handles['stdin']) as f:
183
f.write(data)
184
with contextlib.closing(proc.handles['stdout']) as f:
185
ciphertext = f.read()
186
proc.wait()
187
except IOError as e:
188
raise PGPError(e)
189
self.gnupg.passphrase = None
190
return ciphertext
191
192
def decrypt(self, data, password):
193
self.gnupg.passphrase = self.password_encode(password)
194
with open(os.devnull) as devnull:
195
try:
196
proc = self.gnupg.run(['--decrypt'],
197
create_fhs=['stdin', 'stdout'],
198
attach_fhs={'stderr': devnull})
199
with contextlib.closing(proc.handles['stdin'] ) as f:
200
f.write(data)
201
with contextlib.closing(proc.handles['stdout']) as f:
202
decrypted_plaintext = f.read()
203
proc.wait()
204
except IOError as e:
205
raise PGPError(e)
206
self.gnupg.passphrase = None
207
return decrypted_plaintext
208
209
101
210
102
211
class AvahiError(Exception):
103
212
def __init__(self, value, *args, **kwargs):
119
228
Attributes:
120
229
interface: integer; avahi.IF_UNSPEC or an interface index.
121
230
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
231
name: string; Example: 'Mandos'
232
type: string; Example: '_mandos._tcp'.
124
233
See <http://www.dns-sd.org/ServiceTypes.html>
125
234
port: integer; what port to announce
126
235
TXT: list of strings; TXT record for the service
135
244
"""
136
245
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
246
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
247
domain = "", host = "", max_renames = 32768,
139
248
protocol = avahi.PROTO_UNSPEC, bus = None):
140
249
self.interface = interface
141
250
self.name = name
150
259
self.group = None # our entry group
151
260
self.server = None
152
261
self.bus = bus
262
self.entry_group_state_changed_match = None
153
263
def rename(self):
154
264
"""Derived from the Avahi example code"""
155
265
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
266
logger.critical("No suitable Zeroconf service name found"
267
" after %i retries, exiting.",
158
268
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 ...",
269
raise AvahiServiceError("Too many renames")
270
self.name = unicode(self.server
271
.GetAlternativeServiceName(self.name))
272
logger.info("Changing Zeroconf service name to %r ...",
162
273
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
274
self.remove()
168
275
try:
169
276
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
277
except dbus.exceptions.DBusException as error:
278
logger.critical("DBusException: %s", error)
172
279
self.cleanup()
173
280
os._exit(1)
174
281
self.rename_count += 1
175
282
def remove(self):
176
283
"""Derived from the Avahi example code"""
284
if self.entry_group_state_changed_match is not None:
285
self.entry_group_state_changed_match.remove()
286
self.entry_group_state_changed_match = None
177
287
if self.group is not None:
178
288
self.group.Reset()
179
289
def add(self):
180
290
"""Derived from the Avahi example code"""
291
self.remove()
181
292
if self.group is None:
182
293
self.group = dbus.Interface(
183
294
self.bus.get_object(avahi.DBUS_NAME,
184
295
self.server.EntryGroupNew()),
185
296
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' ...",
297
self.entry_group_state_changed_match = (
298
self.group.connect_to_signal(
299
'StateChanged', self.entry_group_state_changed))
300
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
190
301
self.name, self.type)
191
302
self.group.AddService(
192
303
self.interface,
199
310
self.group.Commit()
200
311
def entry_group_state_changed(self, state, error):
201
312
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
313
logger.debug("Avahi entry group state change: %i", state)
203
314
204
315
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
316
logger.debug("Zeroconf service established.")
206
317
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
318
logger.info("Zeroconf service name collision.")
208
319
self.rename()
209
320
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
321
logger.critical("Avahi: Error in group state changed %s",
211
322
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
323
raise AvahiGroupError("State changed: %s"
213
324
% unicode(error))
214
325
def cleanup(self):
215
326
"""Derived from the Avahi example code"""
216
327
if self.group is not None:
217
self.group.Free()
328
try:
329
self.group.Free()
330
except (dbus.exceptions.UnknownMethodException,
331
dbus.exceptions.DBusException):
332
pass
218
333
self.group = None
219
def server_state_changed(self, state):
334
self.remove()
335
def server_state_changed(self, state, error=None):
220
336
"""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()
337
logger.debug("Avahi server state change: %i", state)
338
bad_states = { avahi.SERVER_INVALID:
339
"Zeroconf server invalid",
340
avahi.SERVER_REGISTERING: None,
341
avahi.SERVER_COLLISION:
342
"Zeroconf server name collision",
343
avahi.SERVER_FAILURE:
344
"Zeroconf server failure" }
345
if state in bad_states:
346
if bad_states[state] is not None:
347
if error is None:
348
logger.error(bad_states[state])
349
else:
350
logger.error(bad_states[state] + ": %r", error)
351
self.cleanup()
225
352
elif state == avahi.SERVER_RUNNING:
226
353
self.add()
354
else:
355
if error is None:
356
logger.debug("Unknown state: %r", state)
357
else:
358
logger.debug("Unknown state: %r: %r", state, error)
227
359
def activate(self):
228
360
"""Derived from the Avahi example code"""
229
361
if self.server is None:
230
362
self.server = dbus.Interface(
231
363
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
364
avahi.DBUS_PATH_SERVER,
365
follow_name_owner_changes=True),
233
366
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
367
self.server.connect_to_signal("StateChanged",
235
368
self.server_state_changed)
236
369
self.server_state_changed(self.server.GetState())
237
370
371
class AvahiServiceToSyslog(AvahiService):
372
def rename(self):
373
"""Add the new name to the syslog messages"""
374
ret = AvahiService.rename(self)
375
syslogger.setFormatter(logging.Formatter
376
('Mandos (%s) [%%(process)d]:'
377
' %%(levelname)s: %%(message)s'
378
% self.name))
379
return ret
238
380
381
def timedelta_to_milliseconds(td):
382
"Convert a datetime.timedelta() to milliseconds"
383
return ((td.days * 24 * 60 * 60 * 1000)
384
+ (td.seconds * 1000)
385
+ (td.microseconds // 1000))
386
239
387
class Client(object):
240
388
"""A representation of a client host served by this server.
241
389
242
390
Attributes:
243
_approved: bool(); 'None' if not yet approved/disapproved
391
approved: bool(); 'None' if not yet approved/disapproved
244
392
approval_delay: datetime.timedelta(); Time to wait for approval
245
393
approval_duration: datetime.timedelta(); Duration of one approval
246
394
checker: subprocess.Popen(); a running checker process used
247
395
to see if the client lives.
248
396
'None' if no process is running.
249
checker_callback_tag: - '' -
397
checker_callback_tag: a gobject event source tag, or None
250
398
checker_command: string; External command which is run to check
251
399
if client lives. %() expansions are done at
252
400
runtime with vars(self) as dict, so that for
253
401
instance %(name)s can be used in the command.
254
402
checker_initiator_tag: a gobject event source tag, or None
255
403
created: datetime.datetime(); (UTC) object creation
404
client_structure: Object describing what attributes a client has
405
and is used for storing the client at exit
256
406
current_checker_command: string; current running checker_command
257
disable_hook: If set, called by disable() as disable_hook(self)
258
disable_initiator_tag: - '' -
407
disable_initiator_tag: a gobject event source tag, or None
259
408
enabled: bool()
260
409
fingerprint: string (40 or 32 hexadecimal digits); used to
261
410
uniquely identify the client
262
411
host: string; available for use by the checker command
263
412
interval: datetime.timedelta(); How often to start a new checker
413
last_approval_request: datetime.datetime(); (UTC) or None
264
414
last_checked_ok: datetime.datetime(); (UTC) or None
265
last_enabled: datetime.datetime(); (UTC)
415
last_checker_status: integer between 0 and 255 reflecting exit
416
status of last checker. -1 reflects crashed
417
checker, or None.
418
last_enabled: datetime.datetime(); (UTC) or None
266
419
name: string; from the config file, used in log messages and
267
420
D-Bus identifiers
268
421
secret: bytestring; sent verbatim (over TLS) to client
269
422
timeout: datetime.timedelta(); How long from last_checked_ok
270
423
until this client is disabled
424
extended_timeout: extra long timeout when password has been sent
271
425
runtime_expansions: Allowed attributes for runtime expansion.
426
expires: datetime.datetime(); time (UTC) when a client will be
427
disabled, or None
272
428
"""
273
429
274
runtime_expansions = (u"approval_delay", u"approval_duration",
275
u"created", u"enabled", u"fingerprint",
276
u"host", u"interval", u"last_checked_ok",
277
u"last_enabled", u"name", u"timeout")
278
279
@staticmethod
280
def _timedelta_to_milliseconds(td):
281
"Convert a datetime.timedelta() to milliseconds"
282
return ((td.days * 24 * 60 * 60 * 1000)
283
+ (td.seconds * 1000)
284
+ (td.microseconds // 1000))
430
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
433
"last_enabled", "name", "timeout")
434
client_defaults = { "timeout": "5m",
435
"extended_timeout": "15m",
436
"interval": "2m",
437
"checker": "fping -q -- %%(host)s",
438
"host": "",
439
"approval_delay": "0s",
440
"approval_duration": "1s",
441
"approved_by_default": "True",
442
"enabled": "True",
443
}
285
444
286
445
def timeout_milliseconds(self):
287
446
"Return the 'timeout' attribute in milliseconds"
288
return self._timedelta_to_milliseconds(self.timeout)
447
return timedelta_to_milliseconds(self.timeout)
448
449
def extended_timeout_milliseconds(self):
450
"Return the 'extended_timeout' attribute in milliseconds"
451
return timedelta_to_milliseconds(self.extended_timeout)
289
452
290
453
def interval_milliseconds(self):
291
454
"Return the 'interval' attribute in milliseconds"
292
return self._timedelta_to_milliseconds(self.interval)
293
455
return timedelta_to_milliseconds(self.interval)
456
294
457
def approval_delay_milliseconds(self):
295
return self._timedelta_to_milliseconds(self.approval_delay)
296
297
def __init__(self, name = None, disable_hook=None, config=None):
458
return timedelta_to_milliseconds(self.approval_delay)
459
460
@staticmethod
461
def config_parser(config):
462
""" Construct a new dict of client settings of this form:
463
{ client_name: {setting_name: value, ...}, ...}
464
with exceptions for any special settings as defined above"""
465
settings = {}
466
for client_name in config.sections():
467
section = dict(config.items(client_name))
468
client = settings[client_name] = {}
469
470
client["host"] = section["host"]
471
# Reformat values from string types to Python types
472
client["approved_by_default"] = config.getboolean(
473
client_name, "approved_by_default")
474
client["enabled"] = config.getboolean(client_name, "enabled")
475
476
client["fingerprint"] = (section["fingerprint"].upper()
477
.replace(" ", ""))
478
if "secret" in section:
479
client["secret"] = section["secret"].decode("base64")
480
elif "secfile" in section:
481
with open(os.path.expanduser(os.path.expandvars
482
(section["secfile"])),
483
"rb") as secfile:
484
client["secret"] = secfile.read()
485
else:
486
raise TypeError("No secret or secfile for section %s"
487
% section)
488
client["timeout"] = string_to_delta(section["timeout"])
489
client["extended_timeout"] = string_to_delta(
490
section["extended_timeout"])
491
client["interval"] = string_to_delta(section["interval"])
492
client["approval_delay"] = string_to_delta(
493
section["approval_delay"])
494
client["approval_duration"] = string_to_delta(
495
section["approval_duration"])
496
client["checker_command"] = section["checker"]
497
client["last_approval_request"] = None
498
client["last_checked_ok"] = None
499
client["last_checker_status"] = None
500
if client["enabled"]:
501
client["last_enabled"] = datetime.datetime.utcnow()
502
client["expires"] = (datetime.datetime.utcnow()
503
+ client["timeout"])
504
else:
505
client["last_enabled"] = None
506
client["expires"] = None
507
508
return settings
509
510
511
def __init__(self, settings, name = None):
298
512
"""Note: the 'checker' key in 'config' sets the
299
513
'checker_command' attribute and *not* the 'checker'
300
514
attribute."""
301
515
self.name = name
302
if config is None:
303
config = {}
304
logger.debug(u"Creating client %r", self.name)
516
# adding all client settings
517
for setting, value in settings.iteritems():
518
setattr(self, setting, value)
519
520
logger.debug("Creating client %r", self.name)
305
521
# Uppercase and remove spaces from fingerprint for later
306
522
# comparison purposes with return value from the fingerprint()
307
523
# function
308
self.fingerprint = (config[u"fingerprint"].upper()
309
.replace(u" ", u""))
310
logger.debug(u" Fingerprint: %s", self.fingerprint)
311
if u"secret" in config:
312
self.secret = config[u"secret"].decode(u"base64")
313
elif u"secfile" in config:
314
with open(os.path.expanduser(os.path.expandvars
315
(config[u"secfile"])),
316
"rb") as secfile:
317
self.secret = secfile.read()
318
else:
319
raise TypeError(u"No secret or secfile for client %s"
320
% self.name)
321
self.host = config.get(u"host", u"")
322
self.created = datetime.datetime.utcnow()
323
self.enabled = False
324
self.last_enabled = None
325
self.last_checked_ok = None
326
self.timeout = string_to_delta(config[u"timeout"])
327
self.interval = string_to_delta(config[u"interval"])
328
self.disable_hook = disable_hook
524
logger.debug(" Fingerprint: %s", self.fingerprint)
525
self.created = settings.get("created", datetime.datetime.utcnow())
526
527
# attributes specific for this server instance
329
528
self.checker = None
330
529
self.checker_initiator_tag = None
331
530
self.disable_initiator_tag = None
332
531
self.checker_callback_tag = None
333
self.checker_command = config[u"checker"]
334
532
self.current_checker_command = None
335
self.last_connect = None
336
self._approved = None
337
self.approved_by_default = config.get(u"approved_by_default",
338
True)
533
self.approved = None
339
534
self.approvals_pending = 0
340
self.approval_delay = string_to_delta(
341
config[u"approval_delay"])
342
self.approval_duration = string_to_delta(
343
config[u"approval_duration"])
344
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
535
self.changedstate = (multiprocessing_manager
536
.Condition(multiprocessing_manager
537
.Lock()))
538
self.client_structure = [attr for attr in
539
self.__dict__.iterkeys()
540
if not attr.startswith("_")]
541
self.client_structure.append("client_structure")
542
543
for name, t in inspect.getmembers(type(self),
544
lambda obj:
545
isinstance(obj,
546
property)):
547
if not name.startswith("_"):
548
self.client_structure.append(name)
345
549
550
# Send notice to process children that client state has changed
346
551
def send_changedstate(self):
347
self.changedstate.acquire()
348
self.changedstate.notify_all()
349
self.changedstate.release()
350
552
with self.changedstate:
553
self.changedstate.notify_all()
554
351
555
def enable(self):
352
556
"""Start this client's checker and timeout hooks"""
353
if getattr(self, u"enabled", False):
557
if getattr(self, "enabled", False):
354
558
# Already enabled
355
559
return
356
560
self.send_changedstate()
561
self.expires = datetime.datetime.utcnow() + self.timeout
562
self.enabled = True
357
563
self.last_enabled = datetime.datetime.utcnow()
564
self.init_checker()
565
566
def disable(self, quiet=True):
567
"""Disable this client."""
568
if not getattr(self, "enabled", False):
569
return False
570
if not quiet:
571
self.send_changedstate()
572
if not quiet:
573
logger.info("Disabling client %s", self.name)
574
if getattr(self, "disable_initiator_tag", False):
575
gobject.source_remove(self.disable_initiator_tag)
576
self.disable_initiator_tag = None
577
self.expires = None
578
if getattr(self, "checker_initiator_tag", False):
579
gobject.source_remove(self.checker_initiator_tag)
580
self.checker_initiator_tag = None
581
self.stop_checker()
582
self.enabled = False
583
# Do not run this again if called by a gobject.timeout_add
584
return False
585
586
def __del__(self):
587
self.disable()
588
589
def init_checker(self):
358
590
# Schedule a new checker to be started an 'interval' from now,
359
591
# and every interval from then on.
360
592
self.checker_initiator_tag = (gobject.timeout_add
364
596
self.disable_initiator_tag = (gobject.timeout_add
365
597
(self.timeout_milliseconds(),
366
598
self.disable))
367
self.enabled = True
368
599
# Also start a new checker *right now*.
369
600
self.start_checker()
370
601
371
def disable(self, quiet=True):
372
"""Disable this client."""
373
if not getattr(self, "enabled", False):
374
return False
375
if not quiet:
376
self.send_changedstate()
377
if not quiet:
378
logger.info(u"Disabling client %s", self.name)
379
if getattr(self, u"disable_initiator_tag", False):
380
gobject.source_remove(self.disable_initiator_tag)
381
self.disable_initiator_tag = None
382
if getattr(self, u"checker_initiator_tag", False):
383
gobject.source_remove(self.checker_initiator_tag)
384
self.checker_initiator_tag = None
385
self.stop_checker()
386
if self.disable_hook:
387
self.disable_hook(self)
388
self.enabled = False
389
# Do not run this again if called by a gobject.timeout_add
390
return False
391
392
def __del__(self):
393
self.disable_hook = None
394
self.disable()
395
396
602
def checker_callback(self, pid, condition, command):
397
603
"""The checker has completed, so take appropriate actions."""
398
604
self.checker_callback_tag = None
399
605
self.checker = None
400
606
if os.WIFEXITED(condition):
401
exitstatus = os.WEXITSTATUS(condition)
402
if exitstatus == 0:
403
logger.info(u"Checker for %(name)s succeeded",
607
self.last_checker_status = os.WEXITSTATUS(condition)
608
if self.last_checker_status == 0:
609
logger.info("Checker for %(name)s succeeded",
404
610
vars(self))
405
611
self.checked_ok()
406
612
else:
407
logger.info(u"Checker for %(name)s failed",
613
logger.info("Checker for %(name)s failed",
408
614
vars(self))
409
615
else:
410
logger.warning(u"Checker for %(name)s crashed?",
616
self.last_checker_status = -1
617
logger.warning("Checker for %(name)s crashed?",
411
618
vars(self))
412
619
413
def checked_ok(self):
620
def checked_ok(self, timeout=None):
414
621
"""Bump up the timeout for this client.
415
622
416
623
This should only be called when the client has been seen,
417
624
alive and well.
418
625
"""
626
if timeout is None:
627
timeout = self.timeout
419
628
self.last_checked_ok = datetime.datetime.utcnow()
420
gobject.source_remove(self.disable_initiator_tag)
421
self.disable_initiator_tag = (gobject.timeout_add
422
(self.timeout_milliseconds(),
423
self.disable))
629
if self.disable_initiator_tag is not None:
630
gobject.source_remove(self.disable_initiator_tag)
631
if getattr(self, "enabled", False):
632
self.disable_initiator_tag = (gobject.timeout_add
633
(timedelta_to_milliseconds
634
(timeout), self.disable))
635
self.expires = datetime.datetime.utcnow() + timeout
636
637
def need_approval(self):
638
self.last_approval_request = datetime.datetime.utcnow()
424
639
425
640
def start_checker(self):
426
641
"""Start a new checker subprocess if one is not running.
439
654
# If a checker exists, make sure it is not a zombie
440
655
try:
441
656
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
442
except (AttributeError, OSError), error:
657
except (AttributeError, OSError) as error:
443
658
if (isinstance(error, OSError)
444
659
and error.errno != errno.ECHILD):
445
660
raise error
446
661
else:
447
662
if pid:
448
logger.warning(u"Checker was a zombie")
663
logger.warning("Checker was a zombie")
449
664
gobject.source_remove(self.checker_callback_tag)
450
665
self.checker_callback(pid, status,
451
666
self.current_checker_command)
458
673
# Escape attributes for the shell
459
674
escaped_attrs = dict(
460
675
(attr,
461
re.escape(unicode(str(getattr(self, attr, u"")),
676
re.escape(unicode(str(getattr(self, attr, "")),
462
677
errors=
463
u'replace')))
678
'replace')))
464
679
for attr in
465
680
self.runtime_expansions)
466
681
467
682
try:
468
683
command = self.checker_command % escaped_attrs
469
except TypeError, error:
470
logger.error(u'Could not format string "%s":'
471
u' %s', self.checker_command, error)
684
except TypeError as error:
685
logger.error('Could not format string "%s":'
686
' %s', self.checker_command, error)
472
687
return True # Try again later
473
688
self.current_checker_command = command
474
689
try:
475
logger.info(u"Starting checker %r for %s",
690
logger.info("Starting checker %r for %s",
476
691
command, self.name)
477
692
# We don't need to redirect stdout and stderr, since
478
693
# in normal mode, that is already done by daemon(),
480
695
# always replaced by /dev/null.)
481
696
self.checker = subprocess.Popen(command,
482
697
close_fds=True,
483
shell=True, cwd=u"/")
698
shell=True, cwd="/")
484
699
self.checker_callback_tag = (gobject.child_watch_add
485
700
(self.checker.pid,
486
701
self.checker_callback,
491
706
if pid:
492
707
gobject.source_remove(self.checker_callback_tag)
493
708
self.checker_callback(pid, status, command)
494
except OSError, error:
495
logger.error(u"Failed to start subprocess: %s",
709
except OSError as error:
710
logger.error("Failed to start subprocess: %s",
496
711
error)
497
712
# Re-run this periodically if run by gobject.timeout_add
498
713
return True
502
717
if self.checker_callback_tag:
503
718
gobject.source_remove(self.checker_callback_tag)
504
719
self.checker_callback_tag = None
505
if getattr(self, u"checker", None) is None:
720
if getattr(self, "checker", None) is None:
506
721
return
507
logger.debug(u"Stopping checker for %(name)s", vars(self))
722
logger.debug("Stopping checker for %(name)s", vars(self))
508
723
try:
509
724
os.kill(self.checker.pid, signal.SIGTERM)
510
725
#time.sleep(0.5)
511
726
#if self.checker.poll() is None:
512
727
# os.kill(self.checker.pid, signal.SIGKILL)
513
except OSError, error:
728
except OSError as error:
514
729
if error.errno != errno.ESRCH: # No such process
515
730
raise
516
731
self.checker = None
517
732
518
def dbus_service_property(dbus_interface, signature=u"v",
519
access=u"readwrite", byte_arrays=False):
733
734
def dbus_service_property(dbus_interface, signature="v",
735
access="readwrite", byte_arrays=False):
520
736
"""Decorators for marking methods of a DBusObjectWithProperties to
521
737
become properties on the D-Bus.
522
738
529
745
"""
530
746
# Encoding deeply encoded byte arrays is not supported yet by the
531
747
# "Set" method, so we fail early here:
532
if byte_arrays and signature != u"ay":
533
raise ValueError(u"Byte arrays not supported for non-'ay'"
534
u" signature %r" % signature)
748
if byte_arrays and signature != "ay":
749
raise ValueError("Byte arrays not supported for non-'ay'"
750
" signature %r" % signature)
535
751
def decorator(func):
536
752
func._dbus_is_property = True
537
753
func._dbus_interface = dbus_interface
538
754
func._dbus_signature = signature
539
755
func._dbus_access = access
540
756
func._dbus_name = func.__name__
541
if func._dbus_name.endswith(u"_dbus_property"):
757
if func._dbus_name.endswith("_dbus_property"):
542
758
func._dbus_name = func._dbus_name[:-14]
543
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
759
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
544
760
return func
545
761
return decorator
546
762
566
782
567
783
class DBusObjectWithProperties(dbus.service.Object):
568
784
"""A D-Bus object with properties.
569
785
570
786
Classes inheriting from this can use the dbus_service_property
571
787
decorator to expose methods as D-Bus properties. It exposes the
572
788
standard Get(), Set(), and GetAll() methods on the D-Bus.
574
790
575
791
@staticmethod
576
792
def _is_dbus_property(obj):
577
return getattr(obj, u"_dbus_is_property", False)
793
return getattr(obj, "_dbus_is_property", False)
578
794
579
795
def _get_all_dbus_properties(self):
580
796
"""Returns a generator of (name, attribute) pairs
581
797
"""
582
return ((prop._dbus_name, prop)
798
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
799
for cls in self.__class__.__mro__
583
800
for name, prop in
584
inspect.getmembers(self, self._is_dbus_property))
801
inspect.getmembers(cls, self._is_dbus_property))
585
802
586
803
def _get_dbus_property(self, interface_name, property_name):
587
804
"""Returns a bound method if one exists which is a D-Bus
588
805
property with the specified name and interface.
589
806
"""
590
for name in (property_name,
591
property_name + u"_dbus_property"):
592
prop = getattr(self, name, None)
593
if (prop is None
594
or not self._is_dbus_property(prop)
595
or prop._dbus_name != property_name
596
or (interface_name and prop._dbus_interface
597
and interface_name != prop._dbus_interface)):
598
continue
599
return prop
807
for cls in self.__class__.__mro__:
808
for name, value in (inspect.getmembers
809
(cls, self._is_dbus_property)):
810
if (value._dbus_name == property_name
811
and value._dbus_interface == interface_name):
812
return value.__get__(self)
813
600
814
# No such property
601
raise DBusPropertyNotFound(self.dbus_object_path + u":"
602
+ interface_name + u"."
815
raise DBusPropertyNotFound(self.dbus_object_path + ":"
816
+ interface_name + "."
603
817
+ property_name)
604
818
605
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
606
out_signature=u"v")
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
820
out_signature="v")
607
821
def Get(self, interface_name, property_name):
608
822
"""Standard D-Bus property Get() method, see D-Bus standard.
609
823
"""
610
824
prop = self._get_dbus_property(interface_name, property_name)
611
if prop._dbus_access == u"write":
825
if prop._dbus_access == "write":
612
826
raise DBusPropertyAccessException(property_name)
613
827
value = prop()
614
if not hasattr(value, u"variant_level"):
828
if not hasattr(value, "variant_level"):
615
829
return value
616
830
return type(value)(value, variant_level=value.variant_level+1)
617
831
618
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
832
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
619
833
def Set(self, interface_name, property_name, value):
620
834
"""Standard D-Bus property Set() method, see D-Bus standard.
621
835
"""
622
836
prop = self._get_dbus_property(interface_name, property_name)
623
if prop._dbus_access == u"read":
837
if prop._dbus_access == "read":
624
838
raise DBusPropertyAccessException(property_name)
625
if prop._dbus_get_args_options[u"byte_arrays"]:
839
if prop._dbus_get_args_options["byte_arrays"]:
626
840
# The byte_arrays option is not supported yet on
627
841
# signatures other than "ay".
628
if prop._dbus_signature != u"ay":
842
if prop._dbus_signature != "ay":
629
843
raise ValueError
630
844
value = dbus.ByteArray(''.join(unichr(byte)
631
845
for byte in value))
632
846
prop(value)
633
847
634
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
635
out_signature=u"a{sv}")
848
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
849
out_signature="a{sv}")
636
850
def GetAll(self, interface_name):
637
851
"""Standard D-Bus property GetAll() method, see D-Bus
638
852
standard.
639
853
640
854
Note: Will not include properties with access="write".
641
855
"""
642
all = {}
856
properties = {}
643
857
for name, prop in self._get_all_dbus_properties():
644
858
if (interface_name
645
859
and interface_name != prop._dbus_interface):
646
860
# Interface non-empty but did not match
647
861
continue
648
862
# Ignore write-only properties
649
if prop._dbus_access == u"write":
863
if prop._dbus_access == "write":
650
864
continue
651
865
value = prop()
652
if not hasattr(value, u"variant_level"):
653
all[name] = value
866
if not hasattr(value, "variant_level"):
867
properties[name] = value
654
868
continue
655
all[name] = type(value)(value, variant_level=
656
value.variant_level+1)
657
return dbus.Dictionary(all, signature=u"sv")
869
properties[name] = type(value)(value, variant_level=
870
value.variant_level+1)
871
return dbus.Dictionary(properties, signature="sv")
658
872
659
873
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
660
out_signature=u"s",
874
out_signature="s",
661
875
path_keyword='object_path',
662
876
connection_keyword='connection')
663
877
def Introspect(self, object_path, connection):
668
882
try:
669
883
document = xml.dom.minidom.parseString(xmlstring)
670
884
def make_tag(document, name, prop):
671
e = document.createElement(u"property")
672
e.setAttribute(u"name", name)
673
e.setAttribute(u"type", prop._dbus_signature)
674
e.setAttribute(u"access", prop._dbus_access)
885
e = document.createElement("property")
886
e.setAttribute("name", name)
887
e.setAttribute("type", prop._dbus_signature)
888
e.setAttribute("access", prop._dbus_access)
675
889
return e
676
for if_tag in document.getElementsByTagName(u"interface"):
890
for if_tag in document.getElementsByTagName("interface"):
677
891
for tag in (make_tag(document, name, prop)
678
892
for name, prop
679
893
in self._get_all_dbus_properties()
680
894
if prop._dbus_interface
681
== if_tag.getAttribute(u"name")):
895
== if_tag.getAttribute("name")):
682
896
if_tag.appendChild(tag)
683
897
# Add the names to the return values for the
684
898
# "org.freedesktop.DBus.Properties" methods
685
if (if_tag.getAttribute(u"name")
686
== u"org.freedesktop.DBus.Properties"):
687
for cn in if_tag.getElementsByTagName(u"method"):
688
if cn.getAttribute(u"name") == u"Get":
689
for arg in cn.getElementsByTagName(u"arg"):
690
if (arg.getAttribute(u"direction")
691
== u"out"):
692
arg.setAttribute(u"name", u"value")
693
elif cn.getAttribute(u"name") == u"GetAll":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"props")
698
xmlstring = document.toxml(u"utf-8")
899
if (if_tag.getAttribute("name")
900
== "org.freedesktop.DBus.Properties"):
901
for cn in if_tag.getElementsByTagName("method"):
902
if cn.getAttribute("name") == "Get":
903
for arg in cn.getElementsByTagName("arg"):
904
if (arg.getAttribute("direction")
905
== "out"):
906
arg.setAttribute("name", "value")
907
elif cn.getAttribute("name") == "GetAll":
908
for arg in cn.getElementsByTagName("arg"):
909
if (arg.getAttribute("direction")
910
== "out"):
911
arg.setAttribute("name", "props")
912
xmlstring = document.toxml("utf-8")
699
913
document.unlink()
700
914
except (AttributeError, xml.dom.DOMException,
701
xml.parsers.expat.ExpatError), error:
702
logger.error(u"Failed to override Introspection method",
915
xml.parsers.expat.ExpatError) as error:
916
logger.error("Failed to override Introspection method",
703
917
error)
704
918
return xmlstring
705
919
706
920
921
def datetime_to_dbus (dt, variant_level=0):
922
"""Convert a UTC datetime.datetime() to a D-Bus type."""
923
if dt is None:
924
return dbus.String("", variant_level = variant_level)
925
return dbus.String(dt.isoformat(),
926
variant_level=variant_level)
927
928
929
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
930
.__metaclass__):
931
"""Applied to an empty subclass of a D-Bus object, this metaclass
932
will add additional D-Bus attributes matching a certain pattern.
933
"""
934
def __new__(mcs, name, bases, attr):
935
# Go through all the base classes which could have D-Bus
936
# methods, signals, or properties in them
937
for base in (b for b in bases
938
if issubclass(b, dbus.service.Object)):
939
# Go though all attributes of the base class
940
for attrname, attribute in inspect.getmembers(base):
941
# Ignore non-D-Bus attributes, and D-Bus attributes
942
# with the wrong interface name
943
if (not hasattr(attribute, "_dbus_interface")
944
or not attribute._dbus_interface
945
.startswith("se.recompile.Mandos")):
946
continue
947
# Create an alternate D-Bus interface name based on
948
# the current name
949
alt_interface = (attribute._dbus_interface
950
.replace("se.recompile.Mandos",
951
"se.bsnet.fukt.Mandos"))
952
# Is this a D-Bus signal?
953
if getattr(attribute, "_dbus_is_signal", False):
954
# Extract the original non-method function by
955
# black magic
956
nonmethod_func = (dict(
957
zip(attribute.func_code.co_freevars,
958
attribute.__closure__))["func"]
959
.cell_contents)
960
# Create a new, but exactly alike, function
961
# object, and decorate it to be a new D-Bus signal
962
# with the alternate D-Bus interface name
963
new_function = (dbus.service.signal
964
(alt_interface,
965
attribute._dbus_signature)
966
(types.FunctionType(
967
nonmethod_func.func_code,
968
nonmethod_func.func_globals,
969
nonmethod_func.func_name,
970
nonmethod_func.func_defaults,
971
nonmethod_func.func_closure)))
972
# Define a creator of a function to call both the
973
# old and new functions, so both the old and new
974
# signals gets sent when the function is called
975
def fixscope(func1, func2):
976
"""This function is a scope container to pass
977
func1 and func2 to the "call_both" function
978
outside of its arguments"""
979
def call_both(*args, **kwargs):
980
"""This function will emit two D-Bus
981
signals by calling func1 and func2"""
982
func1(*args, **kwargs)
983
func2(*args, **kwargs)
984
return call_both
985
# Create the "call_both" function and add it to
986
# the class
987
attr[attrname] = fixscope(attribute,
988
new_function)
989
# Is this a D-Bus method?
990
elif getattr(attribute, "_dbus_is_method", False):
991
# Create a new, but exactly alike, function
992
# object. Decorate it to be a new D-Bus method
993
# with the alternate D-Bus interface name. Add it
994
# to the class.
995
attr[attrname] = (dbus.service.method
996
(alt_interface,
997
attribute._dbus_in_signature,
998
attribute._dbus_out_signature)
999
(types.FunctionType
1000
(attribute.func_code,
1001
attribute.func_globals,
1002
attribute.func_name,
1003
attribute.func_defaults,
1004
attribute.func_closure)))
1005
# Is this a D-Bus property?
1006
elif getattr(attribute, "_dbus_is_property", False):
1007
# Create a new, but exactly alike, function
1008
# object, and decorate it to be a new D-Bus
1009
# property with the alternate D-Bus interface
1010
# name. Add it to the class.
1011
attr[attrname] = (dbus_service_property
1012
(alt_interface,
1013
attribute._dbus_signature,
1014
attribute._dbus_access,
1015
attribute
1016
._dbus_get_args_options
1017
["byte_arrays"])
1018
(types.FunctionType
1019
(attribute.func_code,
1020
attribute.func_globals,
1021
attribute.func_name,
1022
attribute.func_defaults,
1023
attribute.func_closure)))
1024
return type.__new__(mcs, name, bases, attr)
1025
1026
707
1027
class ClientDBus(Client, DBusObjectWithProperties):
708
1028
"""A Client class using D-Bus
709
1029
713
1033
"""
714
1034
715
1035
runtime_expansions = (Client.runtime_expansions
716
+ (u"dbus_object_path",))
1036
+ ("dbus_object_path",))
717
1037
718
1038
# dbus.service.Object doesn't use super(), so we can't either.
719
1039
720
1040
def __init__(self, bus = None, *args, **kwargs):
721
self._approvals_pending = 0
722
1041
self.bus = bus
723
1042
Client.__init__(self, *args, **kwargs)
1043
self._approvals_pending = 0
1044
1045
self._approvals_pending = 0
724
1046
# Only now, when this client is initialized, can it show up on
725
1047
# the D-Bus
726
1048
client_object_name = unicode(self.name).translate(
727
{ord(u"."): ord(u"_"),
728
ord(u"-"): ord(u"_")})
1049
{ord("."): ord("_"),
1050
ord("-"): ord("_")})
729
1051
self.dbus_object_path = (dbus.ObjectPath
730
(u"/clients/" + client_object_name))
1052
("/clients/" + client_object_name))
731
1053
DBusObjectWithProperties.__init__(self, self.bus,
732
1054
self.dbus_object_path)
733
1055
734
def _get_approvals_pending(self):
735
return self._approvals_pending
736
def _set_approvals_pending(self, value):
737
old_value = self._approvals_pending
738
self._approvals_pending = value
739
bval = bool(value)
740
if (hasattr(self, "dbus_object_path")
741
and bval is not bool(old_value)):
742
dbus_bool = dbus.Boolean(bval, variant_level=1)
743
self.PropertyChanged(dbus.String(u"ApprovalPending"),
744
dbus_bool)
745
746
approvals_pending = property(_get_approvals_pending,
747
_set_approvals_pending)
748
del _get_approvals_pending, _set_approvals_pending
749
750
@staticmethod
751
def _datetime_to_dbus(dt, variant_level=0):
752
"""Convert a UTC datetime.datetime() to a D-Bus type."""
753
return dbus.String(dt.isoformat(),
754
variant_level=variant_level)
755
756
def enable(self):
757
oldstate = getattr(self, u"enabled", False)
758
r = Client.enable(self)
759
if oldstate != self.enabled:
760
# Emit D-Bus signals
761
self.PropertyChanged(dbus.String(u"Enabled"),
762
dbus.Boolean(True, variant_level=1))
763
self.PropertyChanged(
764
dbus.String(u"LastEnabled"),
765
self._datetime_to_dbus(self.last_enabled,
766
variant_level=1))
767
return r
768
769
def disable(self, quiet = False):
770
oldstate = getattr(self, u"enabled", False)
771
r = Client.disable(self, quiet=quiet)
772
if not quiet and oldstate != self.enabled:
773
# Emit D-Bus signal
774
self.PropertyChanged(dbus.String(u"Enabled"),
775
dbus.Boolean(False, variant_level=1))
776
return r
1056
def notifychangeproperty(transform_func,
1057
dbus_name, type_func=lambda x: x,
1058
variant_level=1):
1059
""" Modify a variable so that it's a property which announces
1060
its changes to DBus.
1061
1062
transform_fun: Function that takes a value and a variant_level
1063
and transforms it to a D-Bus type.
1064
dbus_name: D-Bus name of the variable
1065
type_func: Function that transform the value before sending it
1066
to the D-Bus. Default: no transform
1067
variant_level: D-Bus variant level. Default: 1
1068
"""
1069
attrname = "_{0}".format(dbus_name)
1070
def setter(self, value):
1071
if hasattr(self, "dbus_object_path"):
1072
if (not hasattr(self, attrname) or
1073
type_func(getattr(self, attrname, None))
1074
!= type_func(value)):
1075
dbus_value = transform_func(type_func(value),
1076
variant_level
1077
=variant_level)
1078
self.PropertyChanged(dbus.String(dbus_name),
1079
dbus_value)
1080
setattr(self, attrname, value)
1081
1082
return property(lambda self: getattr(self, attrname), setter)
1083
1084
1085
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1086
approvals_pending = notifychangeproperty(dbus.Boolean,
1087
"ApprovalPending",
1088
type_func = bool)
1089
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1090
last_enabled = notifychangeproperty(datetime_to_dbus,
1091
"LastEnabled")
1092
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1093
type_func = lambda checker:
1094
checker is not None)
1095
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1096
"LastCheckedOK")
1097
last_approval_request = notifychangeproperty(
1098
datetime_to_dbus, "LastApprovalRequest")
1099
approved_by_default = notifychangeproperty(dbus.Boolean,
1100
"ApprovedByDefault")
1101
approval_delay = notifychangeproperty(dbus.UInt64,
1102
"ApprovalDelay",
1103
type_func =
1104
timedelta_to_milliseconds)
1105
approval_duration = notifychangeproperty(
1106
dbus.UInt64, "ApprovalDuration",
1107
type_func = timedelta_to_milliseconds)
1108
host = notifychangeproperty(dbus.String, "Host")
1109
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1110
type_func =
1111
timedelta_to_milliseconds)
1112
extended_timeout = notifychangeproperty(
1113
dbus.UInt64, "ExtendedTimeout",
1114
type_func = timedelta_to_milliseconds)
1115
interval = notifychangeproperty(dbus.UInt64,
1116
"Interval",
1117
type_func =
1118
timedelta_to_milliseconds)
1119
checker_command = notifychangeproperty(dbus.String, "Checker")
1120
1121
del notifychangeproperty
777
1122
778
1123
def __del__(self, *args, **kwargs):
779
1124
try:
780
1125
self.remove_from_connection()
781
1126
except LookupError:
782
1127
pass
783
if hasattr(DBusObjectWithProperties, u"__del__"):
1128
if hasattr(DBusObjectWithProperties, "__del__"):
784
1129
DBusObjectWithProperties.__del__(self, *args, **kwargs)
785
1130
Client.__del__(self, *args, **kwargs)
786
1131
788
1133
*args, **kwargs):
789
1134
self.checker_callback_tag = None
790
1135
self.checker = None
791
# Emit D-Bus signal
792
self.PropertyChanged(dbus.String(u"CheckerRunning"),
793
dbus.Boolean(False, variant_level=1))
794
1136
if os.WIFEXITED(condition):
795
1137
exitstatus = os.WEXITSTATUS(condition)
796
1138
# Emit D-Bus signal
806
1148
return Client.checker_callback(self, pid, condition, command,
807
1149
*args, **kwargs)
808
1150
809
def checked_ok(self, *args, **kwargs):
810
r = Client.checked_ok(self, *args, **kwargs)
811
# Emit D-Bus signal
812
self.PropertyChanged(
813
dbus.String(u"LastCheckedOK"),
814
(self._datetime_to_dbus(self.last_checked_ok,
815
variant_level=1)))
816
return r
817
818
1151
def start_checker(self, *args, **kwargs):
819
1152
old_checker = self.checker
820
1153
if self.checker is not None:
827
1160
and old_checker_pid != self.checker.pid):
828
1161
# Emit D-Bus signal
829
1162
self.CheckerStarted(self.current_checker_command)
830
self.PropertyChanged(
831
dbus.String(u"CheckerRunning"),
832
dbus.Boolean(True, variant_level=1))
833
1163
return r
834
1164
835
def stop_checker(self, *args, **kwargs):
836
old_checker = getattr(self, u"checker", None)
837
r = Client.stop_checker(self, *args, **kwargs)
838
if (old_checker is not None
839
and getattr(self, u"checker", None) is None):
840
self.PropertyChanged(dbus.String(u"CheckerRunning"),
841
dbus.Boolean(False, variant_level=1))
842
return r
843
844
1165
def _reset_approved(self):
845
self._approved = None
1166
self.approved = None
846
1167
return False
847
1168
848
1169
def approve(self, value=True):
849
1170
self.send_changedstate()
850
self._approved = value
851
gobject.timeout_add(self._timedelta_to_milliseconds
1171
self.approved = value
1172
gobject.timeout_add(timedelta_to_milliseconds
852
1173
(self.approval_duration),
853
1174
self._reset_approved)
854
1175
855
1176
856
1177
## D-Bus methods, signals & properties
857
_interface = u"se.bsnet.fukt.Mandos.Client"
1178
_interface = "se.recompile.Mandos.Client"
858
1179
859
1180
## Signals
860
1181
861
1182
# CheckerCompleted - signal
862
@dbus.service.signal(_interface, signature=u"nxs")
1183
@dbus.service.signal(_interface, signature="nxs")
863
1184
def CheckerCompleted(self, exitcode, waitstatus, command):
864
1185
"D-Bus signal"
865
1186
pass
866
1187
867
1188
# CheckerStarted - signal
868
@dbus.service.signal(_interface, signature=u"s")
1189
@dbus.service.signal(_interface, signature="s")
869
1190
def CheckerStarted(self, command):
870
1191
"D-Bus signal"
871
1192
pass
872
1193
873
1194
# PropertyChanged - signal
874
@dbus.service.signal(_interface, signature=u"sv")
1195
@dbus.service.signal(_interface, signature="sv")
875
1196
def PropertyChanged(self, property, value):
876
1197
"D-Bus signal"
877
1198
pass
886
1207
pass
887
1208
888
1209
# Rejected - signal
889
@dbus.service.signal(_interface, signature=u"s")
1210
@dbus.service.signal(_interface, signature="s")
890
1211
def Rejected(self, reason):
891
1212
"D-Bus signal"
892
1213
pass
893
1214
894
1215
# NeedApproval - signal
895
@dbus.service.signal(_interface, signature=u"tb")
1216
@dbus.service.signal(_interface, signature="tb")
896
1217
def NeedApproval(self, timeout, default):
897
1218
"D-Bus signal"
1219
return self.need_approval()
1220
1221
# NeRwequest - signal
1222
@dbus.service.signal(_interface, signature="s")
1223
def NewRequest(self, ip):
1224
"""D-Bus signal
1225
Is sent after a client request a password.
1226
"""
898
1227
pass
899
1228
900
1229
## Methods
901
1230
902
1231
# Approve - method
903
@dbus.service.method(_interface, in_signature=u"b")
1232
@dbus.service.method(_interface, in_signature="b")
904
1233
def Approve(self, value):
905
1234
self.approve(value)
906
1235
907
1236
# CheckedOK - method
908
1237
@dbus.service.method(_interface)
909
1238
def CheckedOK(self):
910
return self.checked_ok()
1239
self.checked_ok()
911
1240
912
1241
# Enable - method
913
1242
@dbus.service.method(_interface)
935
1264
## Properties
936
1265
937
1266
# ApprovalPending - property
938
@dbus_service_property(_interface, signature=u"b", access=u"read")
1267
@dbus_service_property(_interface, signature="b", access="read")
939
1268
def ApprovalPending_dbus_property(self):
940
1269
return dbus.Boolean(bool(self.approvals_pending))
941
1270
942
1271
# ApprovedByDefault - property
943
@dbus_service_property(_interface, signature=u"b",
944
access=u"readwrite")
1272
@dbus_service_property(_interface, signature="b",
1273
access="readwrite")
945
1274
def ApprovedByDefault_dbus_property(self, value=None):
946
1275
if value is None: # get
947
1276
return dbus.Boolean(self.approved_by_default)
948
1277
self.approved_by_default = bool(value)
949
# Emit D-Bus signal
950
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
951
dbus.Boolean(value, variant_level=1))
952
1278
953
1279
# ApprovalDelay - property
954
@dbus_service_property(_interface, signature=u"t",
955
access=u"readwrite")
1280
@dbus_service_property(_interface, signature="t",
1281
access="readwrite")
956
1282
def ApprovalDelay_dbus_property(self, value=None):
957
1283
if value is None: # get
958
1284
return dbus.UInt64(self.approval_delay_milliseconds())
959
1285
self.approval_delay = datetime.timedelta(0, 0, 0, value)
960
# Emit D-Bus signal
961
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
962
dbus.UInt64(value, variant_level=1))
963
1286
964
1287
# ApprovalDuration - property
965
@dbus_service_property(_interface, signature=u"t",
966
access=u"readwrite")
1288
@dbus_service_property(_interface, signature="t",
1289
access="readwrite")
967
1290
def ApprovalDuration_dbus_property(self, value=None):
968
1291
if value is None: # get
969
return dbus.UInt64(self._timedelta_to_milliseconds(
1292
return dbus.UInt64(timedelta_to_milliseconds(
970
1293
self.approval_duration))
971
1294
self.approval_duration = datetime.timedelta(0, 0, 0, value)
972
# Emit D-Bus signal
973
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
974
dbus.UInt64(value, variant_level=1))
975
1295
976
1296
# Name - property
977
@dbus_service_property(_interface, signature=u"s", access=u"read")
1297
@dbus_service_property(_interface, signature="s", access="read")
978
1298
def Name_dbus_property(self):
979
1299
return dbus.String(self.name)
980
1300
981
1301
# Fingerprint - property
982
@dbus_service_property(_interface, signature=u"s", access=u"read")
1302
@dbus_service_property(_interface, signature="s", access="read")
983
1303
def Fingerprint_dbus_property(self):
984
1304
return dbus.String(self.fingerprint)
985
1305
986
1306
# Host - property
987
@dbus_service_property(_interface, signature=u"s",
988
access=u"readwrite")
1307
@dbus_service_property(_interface, signature="s",
1308
access="readwrite")
989
1309
def Host_dbus_property(self, value=None):
990
1310
if value is None: # get
991
1311
return dbus.String(self.host)
992
self.host = value
993
# Emit D-Bus signal
994
self.PropertyChanged(dbus.String(u"Host"),
995
dbus.String(value, variant_level=1))
1312
self.host = unicode(value)
996
1313
997
1314
# Created - property
998
@dbus_service_property(_interface, signature=u"s", access=u"read")
1315
@dbus_service_property(_interface, signature="s", access="read")
999
1316
def Created_dbus_property(self):
1000
return dbus.String(self._datetime_to_dbus(self.created))
1317
return datetime_to_dbus(self.created)
1001
1318
1002
1319
# LastEnabled - property
1003
@dbus_service_property(_interface, signature=u"s", access=u"read")
1320
@dbus_service_property(_interface, signature="s", access="read")
1004
1321
def LastEnabled_dbus_property(self):
1005
if self.last_enabled is None:
1006
return dbus.String(u"")
1007
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1322
return datetime_to_dbus(self.last_enabled)
1008
1323
1009
1324
# Enabled - property
1010
@dbus_service_property(_interface, signature=u"b",
1011
access=u"readwrite")
1325
@dbus_service_property(_interface, signature="b",
1326
access="readwrite")
1012
1327
def Enabled_dbus_property(self, value=None):
1013
1328
if value is None: # get
1014
1329
return dbus.Boolean(self.enabled)
1018
1333
self.disable()
1019
1334
1020
1335
# LastCheckedOK - property
1021
@dbus_service_property(_interface, signature=u"s",
1022
access=u"readwrite")
1336
@dbus_service_property(_interface, signature="s",
1337
access="readwrite")
1023
1338
def LastCheckedOK_dbus_property(self, value=None):
1024
1339
if value is not None:
1025
1340
self.checked_ok()
1026
1341
return
1027
if self.last_checked_ok is None:
1028
return dbus.String(u"")
1029
return dbus.String(self._datetime_to_dbus(self
1030
.last_checked_ok))
1342
return datetime_to_dbus(self.last_checked_ok)
1343
1344
# Expires - property
1345
@dbus_service_property(_interface, signature="s", access="read")
1346
def Expires_dbus_property(self):
1347
return datetime_to_dbus(self.expires)
1348
1349
# LastApprovalRequest - property
1350
@dbus_service_property(_interface, signature="s", access="read")
1351
def LastApprovalRequest_dbus_property(self):
1352
return datetime_to_dbus(self.last_approval_request)
1031
1353
1032
1354
# Timeout - property
1033
@dbus_service_property(_interface, signature=u"t",
1034
access=u"readwrite")
1355
@dbus_service_property(_interface, signature="t",
1356
access="readwrite")
1035
1357
def Timeout_dbus_property(self, value=None):
1036
1358
if value is None: # get
1037
1359
return dbus.UInt64(self.timeout_milliseconds())
1038
1360
self.timeout = datetime.timedelta(0, 0, 0, value)
1039
# Emit D-Bus signal
1040
self.PropertyChanged(dbus.String(u"Timeout"),
1041
dbus.UInt64(value, variant_level=1))
1042
if getattr(self, u"disable_initiator_tag", None) is None:
1361
if getattr(self, "disable_initiator_tag", None) is None:
1043
1362
return
1044
1363
# Reschedule timeout
1045
1364
gobject.source_remove(self.disable_initiator_tag)
1046
1365
self.disable_initiator_tag = None
1047
time_to_die = (self.
1048
_timedelta_to_milliseconds((self
1049
.last_checked_ok
1050
+ self.timeout)
1051
- datetime.datetime
1052
.utcnow()))
1366
self.expires = None
1367
time_to_die = timedelta_to_milliseconds((self
1368
.last_checked_ok
1369
+ self.timeout)
1370
- datetime.datetime
1371
.utcnow())
1053
1372
if time_to_die <= 0:
1054
1373
# The timeout has passed
1055
1374
self.disable()
1056
1375
else:
1376
self.expires = (datetime.datetime.utcnow()
1377
+ datetime.timedelta(milliseconds =
1378
time_to_die))
1057
1379
self.disable_initiator_tag = (gobject.timeout_add
1058
1380
(time_to_die, self.disable))
1059
1381
1382
# ExtendedTimeout - property
1383
@dbus_service_property(_interface, signature="t",
1384
access="readwrite")
1385
def ExtendedTimeout_dbus_property(self, value=None):
1386
if value is None: # get
1387
return dbus.UInt64(self.extended_timeout_milliseconds())
1388
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1389
1060
1390
# Interval - property
1061
@dbus_service_property(_interface, signature=u"t",
1062
access=u"readwrite")
1391
@dbus_service_property(_interface, signature="t",
1392
access="readwrite")
1063
1393
def Interval_dbus_property(self, value=None):
1064
1394
if value is None: # get
1065
1395
return dbus.UInt64(self.interval_milliseconds())
1066
1396
self.interval = datetime.timedelta(0, 0, 0, value)
1067
# Emit D-Bus signal
1068
self.PropertyChanged(dbus.String(u"Interval"),
1069
dbus.UInt64(value, variant_level=1))
1070
if getattr(self, u"checker_initiator_tag", None) is None:
1397
if getattr(self, "checker_initiator_tag", None) is None:
1071
1398
return
1072
# Reschedule checker run
1073
gobject.source_remove(self.checker_initiator_tag)
1074
self.checker_initiator_tag = (gobject.timeout_add
1075
(value, self.start_checker))
1076
self.start_checker() # Start one now, too
1077
1399
if self.enabled:
1400
# Reschedule checker run
1401
gobject.source_remove(self.checker_initiator_tag)
1402
self.checker_initiator_tag = (gobject.timeout_add
1403
(value, self.start_checker))
1404
self.start_checker() # Start one now, too
1405
1078
1406
# Checker - property
1079
@dbus_service_property(_interface, signature=u"s",
1080
access=u"readwrite")
1407
@dbus_service_property(_interface, signature="s",
1408
access="readwrite")
1081
1409
def Checker_dbus_property(self, value=None):
1082
1410
if value is None: # get
1083
1411
return dbus.String(self.checker_command)
1084
self.checker_command = value
1085
# Emit D-Bus signal
1086
self.PropertyChanged(dbus.String(u"Checker"),
1087
dbus.String(self.checker_command,
1088
variant_level=1))
1412
self.checker_command = unicode(value)
1089
1413
1090
1414
# CheckerRunning - property
1091
@dbus_service_property(_interface, signature=u"b",
1092
access=u"readwrite")
1415
@dbus_service_property(_interface, signature="b",
1416
access="readwrite")
1093
1417
def CheckerRunning_dbus_property(self, value=None):
1094
1418
if value is None: # get
1095
1419
return dbus.Boolean(self.checker is not None)
1099
1423
self.stop_checker()
1100
1424
1101
1425
# ObjectPath - property
1102
@dbus_service_property(_interface, signature=u"o", access=u"read")
1426
@dbus_service_property(_interface, signature="o", access="read")
1103
1427
def ObjectPath_dbus_property(self):
1104
1428
return self.dbus_object_path # is already a dbus.ObjectPath
1105
1429
1106
1430
# Secret = property
1107
@dbus_service_property(_interface, signature=u"ay",
1108
access=u"write", byte_arrays=True)
1431
@dbus_service_property(_interface, signature="ay",
1432
access="write", byte_arrays=True)
1109
1433
def Secret_dbus_property(self, value):
1110
1434
self.secret = str(value)
1111
1435
1118
1442
self._pipe.send(('init', fpr, address))
1119
1443
if not self._pipe.recv():
1120
1444
raise KeyError()
1121
1445
1122
1446
def __getattribute__(self, name):
1123
if(name == '_pipe'):
1447
if name == '_pipe':
1124
1448
return super(ProxyClient, self).__getattribute__(name)
1125
1449
self._pipe.send(('getattr', name))
1126
1450
data = self._pipe.recv()
1131
1455
self._pipe.send(('funcall', name, args, kwargs))
1132
1456
return self._pipe.recv()[1]
1133
1457
return func
1134
1458
1135
1459
def __setattr__(self, name, value):
1136
if(name == '_pipe'):
1460
if name == '_pipe':
1137
1461
return super(ProxyClient, self).__setattr__(name, value)
1138
1462
self._pipe.send(('setattr', name, value))
1139
1463
1140
1464
1465
class ClientDBusTransitional(ClientDBus):
1466
__metaclass__ = AlternateDBusNamesMetaclass
1467
1468
1141
1469
class ClientHandler(socketserver.BaseRequestHandler, object):
1142
1470
"""A class to handle client connections.
1143
1471
1146
1474
1147
1475
def handle(self):
1148
1476
with contextlib.closing(self.server.child_pipe) as child_pipe:
1149
logger.info(u"TCP connection from: %s",
1477
logger.info("TCP connection from: %s",
1150
1478
unicode(self.client_address))
1151
logger.debug(u"Pipe FD: %d",
1479
logger.debug("Pipe FD: %d",
1152
1480
self.server.child_pipe.fileno())
1153
1481
1154
1482
session = (gnutls.connection
1155
1483
.ClientSession(self.request,
1156
1484
gnutls.connection
1157
1485
.X509Credentials()))
1158
1486
1159
1487
# Note: gnutls.connection.X509Credentials is really a
1160
1488
# generic GnuTLS certificate credentials object so long as
1161
1489
# no X.509 keys are added to it. Therefore, we can use it
1162
1490
# here despite using OpenPGP certificates.
1163
1164
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1165
# u"+AES-256-CBC", u"+SHA1",
1166
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1167
# u"+DHE-DSS"))
1491
1492
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1493
# "+AES-256-CBC", "+SHA1",
1494
# "+COMP-NULL", "+CTYPE-OPENPGP",
1495
# "+DHE-DSS"))
1168
1496
# Use a fallback default, since this MUST be set.
1169
1497
priority = self.server.gnutls_priority
1170
1498
if priority is None:
1171
priority = u"NORMAL"
1499
priority = "NORMAL"
1172
1500
(gnutls.library.functions
1173
1501
.gnutls_priority_set_direct(session._c_object,
1174
1502
priority, None))
1175
1503
1176
1504
# Start communication using the Mandos protocol
1177
1505
# Get protocol number
1178
1506
line = self.request.makefile().readline()
1179
logger.debug(u"Protocol version: %r", line)
1507
logger.debug("Protocol version: %r", line)
1180
1508
try:
1181
1509
if int(line.strip().split()[0]) > 1:
1182
1510
raise RuntimeError
1183
except (ValueError, IndexError, RuntimeError), error:
1184
logger.error(u"Unknown protocol version: %s", error)
1511
except (ValueError, IndexError, RuntimeError) as error:
1512
logger.error("Unknown protocol version: %s", error)
1185
1513
return
1186
1514
1187
1515
# Start GnuTLS connection
1188
1516
try:
1189
1517
session.handshake()
1190
except gnutls.errors.GNUTLSError, error:
1191
logger.warning(u"Handshake failed: %s", error)
1518
except gnutls.errors.GNUTLSError as error:
1519
logger.warning("Handshake failed: %s", error)
1192
1520
# Do not run session.bye() here: the session is not
1193
1521
# established. Just abandon the request.
1194
1522
return
1195
logger.debug(u"Handshake succeeded")
1196
1523
logger.debug("Handshake succeeded")
1524
1197
1525
approval_required = False
1198
1526
try:
1199
1527
try:
1200
1528
fpr = self.fingerprint(self.peer_certificate
1201
1529
(session))
1202
except (TypeError, gnutls.errors.GNUTLSError), error:
1203
logger.warning(u"Bad certificate: %s", error)
1530
except (TypeError,
1531
gnutls.errors.GNUTLSError) as error:
1532
logger.warning("Bad certificate: %s", error)
1204
1533
return
1205
logger.debug(u"Fingerprint: %s", fpr)
1206
1534
logger.debug("Fingerprint: %s", fpr)
1535
1207
1536
try:
1208
1537
client = ProxyClient(child_pipe, fpr,
1209
1538
self.client_address)
1210
1539
except KeyError:
1211
1540
return
1212
1541
1542
if self.server.use_dbus:
1543
# Emit D-Bus signal
1544
client.NewRequest(str(self.client_address))
1545
1213
1546
if client.approval_delay:
1214
1547
delay = client.approval_delay
1215
1548
client.approvals_pending += 1
1217
1550
1218
1551
while True:
1219
1552
if not client.enabled:
1220
logger.warning(u"Client %s is disabled",
1553
logger.info("Client %s is disabled",
1221
1554
client.name)
1222
1555
if self.server.use_dbus:
1223
1556
# Emit D-Bus signal
1224
client.Rejected("Disabled")
1557
client.Rejected("Disabled")
1225
1558
return
1226
1559
1227
if client._approved or not client.approval_delay:
1560
if client.approved or not client.approval_delay:
1228
1561
#We are approved or approval is disabled
1229
1562
break
1230
elif client._approved is None:
1231
logger.info(u"Client %s needs approval",
1563
elif client.approved is None:
1564
logger.info("Client %s needs approval",
1232
1565
client.name)
1233
1566
if self.server.use_dbus:
1234
1567
# Emit D-Bus signal
1236
1569
client.approval_delay_milliseconds(),
1237
1570
client.approved_by_default)
1238
1571
else:
1239
logger.warning(u"Client %s was not approved",
1572
logger.warning("Client %s was not approved",
1240
1573
client.name)
1241
1574
if self.server.use_dbus:
1242
1575
# Emit D-Bus signal
1244
1577
return
1245
1578
1246
1579
#wait until timeout or approved
1247
#x = float(client._timedelta_to_milliseconds(delay))
1248
1580
time = datetime.datetime.now()
1249
1581
client.changedstate.acquire()
1250
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1582
(client.changedstate.wait
1583
(float(client.timedelta_to_milliseconds(delay)
1584
/ 1000)))
1251
1585
client.changedstate.release()
1252
1586
time2 = datetime.datetime.now()
1253
1587
if (time2 - time) >= delay:
1268
1602
while sent_size < len(client.secret):
1269
1603
try:
1270
1604
sent = session.send(client.secret[sent_size:])
1271
except (gnutls.errors.GNUTLSError), error:
1605
except gnutls.errors.GNUTLSError as error:
1272
1606
logger.warning("gnutls send failed")
1273
1607
return
1274
logger.debug(u"Sent: %d, remaining: %d",
1608
logger.debug("Sent: %d, remaining: %d",
1275
1609
sent, len(client.secret)
1276
1610
- (sent_size + sent))
1277
1611
sent_size += sent
1278
1279
logger.info(u"Sending secret to %s", client.name)
1280
# bump the timeout as if seen
1281
client.checked_ok()
1612
1613
logger.info("Sending secret to %s", client.name)
1614
# bump the timeout using extended_timeout
1615
client.checked_ok(client.extended_timeout)
1282
1616
if self.server.use_dbus:
1283
1617
# Emit D-Bus signal
1284
1618
client.GotSecret()
1288
1622
client.approvals_pending -= 1
1289
1623
try:
1290
1624
session.bye()
1291
except (gnutls.errors.GNUTLSError), error:
1625
except gnutls.errors.GNUTLSError as error:
1292
1626
logger.warning("GnuTLS bye failed")
1293
1627
1294
1628
@staticmethod
1305
1639
.gnutls_certificate_get_peers
1306
1640
(session._c_object, ctypes.byref(list_size)))
1307
1641
if not bool(cert_list) and list_size.value != 0:
1308
raise gnutls.errors.GNUTLSError(u"error getting peer"
1309
u" certificate")
1642
raise gnutls.errors.GNUTLSError("error getting peer"
1643
" certificate")
1310
1644
if list_size.value == 0:
1311
1645
return None
1312
1646
cert = cert_list[0]
1338
1672
if crtverify.value != 0:
1339
1673
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1340
1674
raise (gnutls.errors.CertificateSecurityError
1341
(u"Verify failed"))
1675
("Verify failed"))
1342
1676
# New buffer for the fingerprint
1343
1677
buf = ctypes.create_string_buffer(20)
1344
1678
buf_len = ctypes.c_size_t()
1351
1685
# Convert the buffer to a Python bytestring
1352
1686
fpr = ctypes.string_at(buf, buf_len.value)
1353
1687
# Convert the bytestring to hexadecimal notation
1354
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1688
hex_fpr = binascii.hexlify(fpr).upper()
1355
1689
return hex_fpr
1356
1690
1357
1691
1360
1694
def sub_process_main(self, request, address):
1361
1695
try:
1362
1696
self.finish_request(request, address)
1363
except:
1697
except Exception:
1364
1698
self.handle_error(request, address)
1365
1699
self.close_request(request)
1366
1700
1367
1701
def process_request(self, request, address):
1368
1702
"""Start a new process to process the request."""
1369
multiprocessing.Process(target = self.sub_process_main,
1370
args = (request, address)).start()
1703
proc = multiprocessing.Process(target = self.sub_process_main,
1704
args = (request,
1705
address))
1706
proc.start()
1707
return proc
1708
1371
1709
1372
1710
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1373
1711
""" adds a pipe to the MixIn """
1377
1715
This function creates a new pipe in self.pipe
1378
1716
"""
1379
1717
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1380
1381
super(MultiprocessingMixInWithPipe,
1382
self).process_request(request, client_address)
1718
1719
proc = MultiprocessingMixIn.process_request(self, request,
1720
client_address)
1383
1721
self.child_pipe.close()
1384
self.add_pipe(parent_pipe)
1385
1386
def add_pipe(self, parent_pipe):
1722
self.add_pipe(parent_pipe, proc)
1723
1724
def add_pipe(self, parent_pipe, proc):
1387
1725
"""Dummy function; override as necessary"""
1388
pass
1726
raise NotImplementedError
1727
1389
1728
1390
1729
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1391
1730
socketserver.TCPServer, object):
1409
1748
bind to an address or port if they were not specified."""
1410
1749
if self.interface is not None:
1411
1750
if SO_BINDTODEVICE is None:
1412
logger.error(u"SO_BINDTODEVICE does not exist;"
1413
u" cannot bind to interface %s",
1751
logger.error("SO_BINDTODEVICE does not exist;"
1752
" cannot bind to interface %s",
1414
1753
self.interface)
1415
1754
else:
1416
1755
try:
1417
1756
self.socket.setsockopt(socket.SOL_SOCKET,
1418
1757
SO_BINDTODEVICE,
1419
1758
str(self.interface
1420
+ u'\0'))
1421
except socket.error, error:
1759
+ '\0'))
1760
except socket.error as error:
1422
1761
if error[0] == errno.EPERM:
1423
logger.error(u"No permission to"
1424
u" bind to interface %s",
1762
logger.error("No permission to"
1763
" bind to interface %s",
1425
1764
self.interface)
1426
1765
elif error[0] == errno.ENOPROTOOPT:
1427
logger.error(u"SO_BINDTODEVICE not available;"
1428
u" cannot bind to interface %s",
1766
logger.error("SO_BINDTODEVICE not available;"
1767
" cannot bind to interface %s",
1429
1768
self.interface)
1430
1769
else:
1431
1770
raise
1433
1772
if self.server_address[0] or self.server_address[1]:
1434
1773
if not self.server_address[0]:
1435
1774
if self.address_family == socket.AF_INET6:
1436
any_address = u"::" # in6addr_any
1775
any_address = "::" # in6addr_any
1437
1776
else:
1438
1777
any_address = socket.INADDR_ANY
1439
1778
self.server_address = (any_address,
1466
1805
self.enabled = False
1467
1806
self.clients = clients
1468
1807
if self.clients is None:
1469
self.clients = set()
1808
self.clients = {}
1470
1809
self.use_dbus = use_dbus
1471
1810
self.gnutls_priority = gnutls_priority
1472
1811
IPv6_TCPServer.__init__(self, server_address,
1476
1815
def server_activate(self):
1477
1816
if self.enabled:
1478
1817
return socketserver.TCPServer.server_activate(self)
1818
1479
1819
def enable(self):
1480
1820
self.enabled = True
1481
def add_pipe(self, parent_pipe):
1821
1822
def add_pipe(self, parent_pipe, proc):
1482
1823
# Call "handle_ipc" for both data and EOF events
1483
1824
gobject.io_add_watch(parent_pipe.fileno(),
1484
1825
gobject.IO_IN | gobject.IO_HUP,
1485
1826
functools.partial(self.handle_ipc,
1486
parent_pipe = parent_pipe))
1487
1827
parent_pipe =
1828
parent_pipe,
1829
proc = proc))
1830
1488
1831
def handle_ipc(self, source, condition, parent_pipe=None,
1489
client_object=None):
1832
proc = None, client_object=None):
1490
1833
condition_names = {
1491
gobject.IO_IN: u"IN", # There is data to read.
1492
gobject.IO_OUT: u"OUT", # Data can be written (without
1834
gobject.IO_IN: "IN", # There is data to read.
1835
gobject.IO_OUT: "OUT", # Data can be written (without
1493
1836
# blocking).
1494
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1495
gobject.IO_ERR: u"ERR", # Error condition.
1496
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1837
gobject.IO_PRI: "PRI", # There is urgent data to read.
1838
gobject.IO_ERR: "ERR", # Error condition.
1839
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1497
1840
# broken, usually for pipes and
1498
1841
# sockets).
1499
1842
}
1501
1844
for cond, name in
1502
1845
condition_names.iteritems()
1503
1846
if cond & condition)
1504
# error or the other end of multiprocessing.Pipe has closed
1847
# error, or the other end of multiprocessing.Pipe has closed
1505
1848
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1849
# Wait for other process to exit
1850
proc.join()
1506
1851
return False
1507
1852
1508
1853
# Read a request from the child
1513
1858
fpr = request[1]
1514
1859
address = request[2]
1515
1860
1516
for c in self.clients:
1861
for c in self.clients.itervalues():
1517
1862
if c.fingerprint == fpr:
1518
1863
client = c
1519
1864
break
1520
1865
else:
1521
logger.warning(u"Client not found for fingerprint: %s, ad"
1522
u"dress: %s", fpr, address)
1866
logger.info("Client not found for fingerprint: %s, ad"
1867
"dress: %s", fpr, address)
1523
1868
if self.use_dbus:
1524
1869
# Emit D-Bus signal
1525
mandos_dbus_service.ClientNotFound(fpr, address[0])
1870
mandos_dbus_service.ClientNotFound(fpr,
1871
address[0])
1526
1872
parent_pipe.send(False)
1527
1873
return False
1528
1874
1529
1875
gobject.io_add_watch(parent_pipe.fileno(),
1530
1876
gobject.IO_IN | gobject.IO_HUP,
1531
1877
functools.partial(self.handle_ipc,
1532
parent_pipe = parent_pipe,
1533
client_object = client))
1878
parent_pipe =
1879
parent_pipe,
1880
proc = proc,
1881
client_object =
1882
client))
1534
1883
parent_pipe.send(True)
1535
# remove the old hook in favor of the new above hook on same fileno
1884
# remove the old hook in favor of the new above hook on
1885
# same fileno
1536
1886
return False
1537
1887
if command == 'funcall':
1538
1888
funcname = request[1]
1539
1889
args = request[2]
1540
1890
kwargs = request[3]
1541
1891
1542
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1543
1892
parent_pipe.send(('data', getattr(client_object,
1893
funcname)(*args,
1894
**kwargs)))
1895
1544
1896
if command == 'getattr':
1545
1897
attrname = request[1]
1546
1898
if callable(client_object.__getattribute__(attrname)):
1547
1899
parent_pipe.send(('function',))
1548
1900
else:
1549
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1901
parent_pipe.send(('data', client_object
1902
.__getattribute__(attrname)))
1550
1903
1551
1904
if command == 'setattr':
1552
1905
attrname = request[1]
1553
1906
value = request[2]
1554
1907
setattr(client_object, attrname, value)
1555
1908
1556
1909
return True
1557
1910
1558
1911
1559
1912
def string_to_delta(interval):
1560
1913
"""Parse a string and return a datetime.timedelta
1561
1914
1562
>>> string_to_delta(u'7d')
1915
>>> string_to_delta('7d')
1563
1916
datetime.timedelta(7)
1564
>>> string_to_delta(u'60s')
1917
>>> string_to_delta('60s')
1565
1918
datetime.timedelta(0, 60)
1566
>>> string_to_delta(u'60m')
1919
>>> string_to_delta('60m')
1567
1920
datetime.timedelta(0, 3600)
1568
>>> string_to_delta(u'24h')
1921
>>> string_to_delta('24h')
1569
1922
datetime.timedelta(1)
1570
>>> string_to_delta(u'1w')
1923
>>> string_to_delta('1w')
1571
1924
datetime.timedelta(7)
1572
>>> string_to_delta(u'5m 30s')
1925
>>> string_to_delta('5m 30s')
1573
1926
datetime.timedelta(0, 330)
1574
1927
"""
1575
1928
timevalue = datetime.timedelta(0)
1577
1930
try:
1578
1931
suffix = unicode(s[-1])
1579
1932
value = int(s[:-1])
1580
if suffix == u"d":
1933
if suffix == "d":
1581
1934
delta = datetime.timedelta(value)
1582
elif suffix == u"s":
1935
elif suffix == "s":
1583
1936
delta = datetime.timedelta(0, value)
1584
elif suffix == u"m":
1937
elif suffix == "m":
1585
1938
delta = datetime.timedelta(0, 0, 0, 0, value)
1586
elif suffix == u"h":
1939
elif suffix == "h":
1587
1940
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1588
elif suffix == u"w":
1941
elif suffix == "w":
1589
1942
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1590
1943
else:
1591
raise ValueError(u"Unknown suffix %r" % suffix)
1592
except (ValueError, IndexError), e:
1593
raise ValueError(e.message)
1944
raise ValueError("Unknown suffix %r" % suffix)
1945
except (ValueError, IndexError) as e:
1946
raise ValueError(*(e.args))
1594
1947
timevalue += delta
1595
1948
return timevalue
1596
1949
1597
1950
1598
def if_nametoindex(interface):
1599
"""Call the C function if_nametoindex(), or equivalent
1600
1601
Note: This function cannot accept a unicode string."""
1602
global if_nametoindex
1603
try:
1604
if_nametoindex = (ctypes.cdll.LoadLibrary
1605
(ctypes.util.find_library(u"c"))
1606
.if_nametoindex)
1607
except (OSError, AttributeError):
1608
logger.warning(u"Doing if_nametoindex the hard way")
1609
def if_nametoindex(interface):
1610
"Get an interface index the hard way, i.e. using fcntl()"
1611
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1612
with contextlib.closing(socket.socket()) as s:
1613
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1614
struct.pack(str(u"16s16x"),
1615
interface))
1616
interface_index = struct.unpack(str(u"I"),
1617
ifreq[16:20])[0]
1618
return interface_index
1619
return if_nametoindex(interface)
1620
1621
1622
1951
def daemon(nochdir = False, noclose = False):
1623
1952
"""See daemon(3). Standard BSD Unix function.
1624
1953
1627
1956
sys.exit()
1628
1957
os.setsid()
1629
1958
if not nochdir:
1630
os.chdir(u"/")
1959
os.chdir("/")
1631
1960
if os.fork():
1632
1961
sys.exit()
1633
1962
if not noclose:
1635
1964
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1636
1965
if not stat.S_ISCHR(os.fstat(null).st_mode):
1637
1966
raise OSError(errno.ENODEV,
1638
u"%s not a character device"
1967
"%s not a character device"
1639
1968
% os.path.devnull)
1640
1969
os.dup2(null, sys.stdin.fileno())
1641
1970
os.dup2(null, sys.stdout.fileno())
1649
1978
##################################################################
1650
1979
# Parsing of options, both command line and config file
1651
1980
1652
parser = optparse.OptionParser(version = "%%prog %s" % version)
1653
parser.add_option("-i", u"--interface", type=u"string",
1654
metavar="IF", help=u"Bind to interface IF")
1655
parser.add_option("-a", u"--address", type=u"string",
1656
help=u"Address to listen for requests on")
1657
parser.add_option("-p", u"--port", type=u"int",
1658
help=u"Port number to receive requests on")
1659
parser.add_option("--check", action=u"store_true",
1660
help=u"Run self-test")
1661
parser.add_option("--debug", action=u"store_true",
1662
help=u"Debug mode; run in foreground and log to"
1663
u" terminal")
1664
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1665
help=u"Debug level for stdout output")
1666
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1667
u" priority string (see GnuTLS documentation)")
1668
parser.add_option("--servicename", type=u"string",
1669
metavar=u"NAME", help=u"Zeroconf service name")
1670
parser.add_option("--configdir", type=u"string",
1671
default=u"/etc/mandos", metavar=u"DIR",
1672
help=u"Directory to search for configuration"
1673
u" files")
1674
parser.add_option("--no-dbus", action=u"store_false",
1675
dest=u"use_dbus", help=u"Do not provide D-Bus"
1676
u" system bus interface")
1677
parser.add_option("--no-ipv6", action=u"store_false",
1678
dest=u"use_ipv6", help=u"Do not use IPv6")
1679
options = parser.parse_args()[0]
1981
parser = argparse.ArgumentParser()
1982
parser.add_argument("-v", "--version", action="version",
1983
version = "%%(prog)s %s" % version,
1984
help="show version number and exit")
1985
parser.add_argument("-i", "--interface", metavar="IF",
1986
help="Bind to interface IF")
1987
parser.add_argument("-a", "--address",
1988
help="Address to listen for requests on")
1989
parser.add_argument("-p", "--port", type=int,
1990
help="Port number to receive requests on")
1991
parser.add_argument("--check", action="store_true",
1992
help="Run self-test")
1993
parser.add_argument("--debug", action="store_true",
1994
help="Debug mode; run in foreground and log"
1995
" to terminal")
1996
parser.add_argument("--debuglevel", metavar="LEVEL",
1997
help="Debug level for stdout output")
1998
parser.add_argument("--priority", help="GnuTLS"
1999
" priority string (see GnuTLS documentation)")
2000
parser.add_argument("--servicename",
2001
metavar="NAME", help="Zeroconf service name")
2002
parser.add_argument("--configdir",
2003
default="/etc/mandos", metavar="DIR",
2004
help="Directory to search for configuration"
2005
" files")
2006
parser.add_argument("--no-dbus", action="store_false",
2007
dest="use_dbus", help="Do not provide D-Bus"
2008
" system bus interface")
2009
parser.add_argument("--no-ipv6", action="store_false",
2010
dest="use_ipv6", help="Do not use IPv6")
2011
parser.add_argument("--no-restore", action="store_false",
2012
dest="restore", help="Do not restore stored"
2013
" state")
2014
parser.add_argument("--statedir", metavar="DIR",
2015
help="Directory to save/restore state in")
2016
2017
options = parser.parse_args()
1680
2018
1681
2019
if options.check:
1682
2020
import doctest
1684
2022
sys.exit()
1685
2023
1686
2024
# Default values for config file for server-global settings
1687
server_defaults = { u"interface": u"",
1688
u"address": u"",
1689
u"port": u"",
1690
u"debug": u"False",
1691
u"priority":
1692
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1693
u"servicename": u"Mandos",
1694
u"use_dbus": u"True",
1695
u"use_ipv6": u"True",
1696
u"debuglevel": u"",
2025
server_defaults = { "interface": "",
2026
"address": "",
2027
"port": "",
2028
"debug": "False",
2029
"priority":
2030
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2031
"servicename": "Mandos",
2032
"use_dbus": "True",
2033
"use_ipv6": "True",
2034
"debuglevel": "",
2035
"restore": "True",
2036
"statedir": "/var/lib/mandos"
1697
2037
}
1698
2038
1699
2039
# Parse config file for server-global settings
1700
2040
server_config = configparser.SafeConfigParser(server_defaults)
1701
2041
del server_defaults
1702
2042
server_config.read(os.path.join(options.configdir,
1703
u"mandos.conf"))
2043
"mandos.conf"))
1704
2044
# Convert the SafeConfigParser object to a dict
1705
2045
server_settings = server_config.defaults()
1706
2046
# Use the appropriate methods on the non-string config options
1707
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1708
server_settings[option] = server_config.getboolean(u"DEFAULT",
2047
for option in ("debug", "use_dbus", "use_ipv6"):
2048
server_settings[option] = server_config.getboolean("DEFAULT",
1709
2049
option)
1710
2050
if server_settings["port"]:
1711
server_settings["port"] = server_config.getint(u"DEFAULT",
1712
u"port")
2051
server_settings["port"] = server_config.getint("DEFAULT",
2052
"port")
1713
2053
del server_config
1714
2054
1715
2055
# Override the settings from the config file with command line
1716
2056
# options, if set.
1717
for option in (u"interface", u"address", u"port", u"debug",
1718
u"priority", u"servicename", u"configdir",
1719
u"use_dbus", u"use_ipv6", u"debuglevel"):
2057
for option in ("interface", "address", "port", "debug",
2058
"priority", "servicename", "configdir",
2059
"use_dbus", "use_ipv6", "debuglevel", "restore",
2060
"statedir"):
1720
2061
value = getattr(options, option)
1721
2062
if value is not None:
1722
2063
server_settings[option] = value
1730
2071
##################################################################
1731
2072
1732
2073
# For convenience
1733
debug = server_settings[u"debug"]
1734
debuglevel = server_settings[u"debuglevel"]
1735
use_dbus = server_settings[u"use_dbus"]
1736
use_ipv6 = server_settings[u"use_ipv6"]
1737
1738
if server_settings[u"servicename"] != u"Mandos":
2074
debug = server_settings["debug"]
2075
debuglevel = server_settings["debuglevel"]
2076
use_dbus = server_settings["use_dbus"]
2077
use_ipv6 = server_settings["use_ipv6"]
2078
stored_state_path = os.path.join(server_settings["statedir"],
2079
stored_state_file)
2080
2081
if debug:
2082
initlogger(debug, logging.DEBUG)
2083
else:
2084
if not debuglevel:
2085
initlogger(debug)
2086
else:
2087
level = getattr(logging, debuglevel.upper())
2088
initlogger(debug, level)
2089
2090
if server_settings["servicename"] != "Mandos":
1739
2091
syslogger.setFormatter(logging.Formatter
1740
(u'Mandos (%s) [%%(process)d]:'
1741
u' %%(levelname)s: %%(message)s'
1742
% server_settings[u"servicename"]))
2092
('Mandos (%s) [%%(process)d]:'
2093
' %%(levelname)s: %%(message)s'
2094
% server_settings["servicename"]))
1743
2095
1744
2096
# Parse config file with clients
1745
client_defaults = { u"timeout": u"1h",
1746
u"interval": u"5m",
1747
u"checker": u"fping -q -- %%(host)s",
1748
u"host": u"",
1749
u"approval_delay": u"0s",
1750
u"approval_duration": u"1s",
1751
}
1752
client_config = configparser.SafeConfigParser(client_defaults)
1753
client_config.read(os.path.join(server_settings[u"configdir"],
1754
u"clients.conf"))
2097
client_config = configparser.SafeConfigParser(Client.client_defaults)
2098
client_config.read(os.path.join(server_settings["configdir"],
2099
"clients.conf"))
1755
2100
1756
2101
global mandos_dbus_service
1757
2102
mandos_dbus_service = None
1758
2103
1759
tcp_server = MandosServer((server_settings[u"address"],
1760
server_settings[u"port"]),
2104
tcp_server = MandosServer((server_settings["address"],
2105
server_settings["port"]),
1761
2106
ClientHandler,
1762
interface=(server_settings[u"interface"]
2107
interface=(server_settings["interface"]
1763
2108
or None),
1764
2109
use_ipv6=use_ipv6,
1765
2110
gnutls_priority=
1766
server_settings[u"priority"],
2111
server_settings["priority"],
1767
2112
use_dbus=use_dbus)
1768
2113
if not debug:
1769
pidfilename = u"/var/run/mandos.pid"
2114
pidfilename = "/var/run/mandos.pid"
1770
2115
try:
1771
pidfile = open(pidfilename, u"w")
2116
pidfile = open(pidfilename, "w")
1772
2117
except IOError:
1773
logger.error(u"Could not open file %r", pidfilename)
2118
logger.error("Could not open file %r", pidfilename)
1774
2119
1775
2120
try:
1776
uid = pwd.getpwnam(u"_mandos").pw_uid
1777
gid = pwd.getpwnam(u"_mandos").pw_gid
2121
uid = pwd.getpwnam("_mandos").pw_uid
2122
gid = pwd.getpwnam("_mandos").pw_gid
1778
2123
except KeyError:
1779
2124
try:
1780
uid = pwd.getpwnam(u"mandos").pw_uid
1781
gid = pwd.getpwnam(u"mandos").pw_gid
2125
uid = pwd.getpwnam("mandos").pw_uid
2126
gid = pwd.getpwnam("mandos").pw_gid
1782
2127
except KeyError:
1783
2128
try:
1784
uid = pwd.getpwnam(u"nobody").pw_uid
1785
gid = pwd.getpwnam(u"nobody").pw_gid
2129
uid = pwd.getpwnam("nobody").pw_uid
2130
gid = pwd.getpwnam("nobody").pw_gid
1786
2131
except KeyError:
1787
2132
uid = 65534
1788
2133
gid = 65534
1789
2134
try:
1790
2135
os.setgid(gid)
1791
2136
os.setuid(uid)
1792
except OSError, error:
2137
except OSError as error:
1793
2138
if error[0] != errno.EPERM:
1794
2139
raise error
1795
2140
1796
if not debug and not debuglevel:
1797
syslogger.setLevel(logging.WARNING)
1798
console.setLevel(logging.WARNING)
1799
if debuglevel:
1800
level = getattr(logging, debuglevel.upper())
1801
syslogger.setLevel(level)
1802
console.setLevel(level)
1803
1804
2141
if debug:
1805
2142
# Enable all possible GnuTLS debugging
1806
2143
1810
2147
1811
2148
@gnutls.library.types.gnutls_log_func
1812
2149
def debug_gnutls(level, string):
1813
logger.debug(u"GnuTLS: %s", string[:-1])
2150
logger.debug("GnuTLS: %s", string[:-1])
1814
2151
1815
2152
(gnutls.library.functions
1816
2153
.gnutls_global_set_log_function(debug_gnutls))
1820
2157
os.dup2(null, sys.stdin.fileno())
1821
2158
if null > 2:
1822
2159
os.close(null)
1823
else:
1824
# No console logging
1825
logger.removeHandler(console)
1826
2160
2161
# Need to fork before connecting to D-Bus
2162
if not debug:
2163
# Close all input and output, do double fork, etc.
2164
daemon()
2165
2166
gobject.threads_init()
1827
2167
1828
2168
global main_loop
1829
2169
# From the Avahi example code
1833
2173
# End of Avahi example code
1834
2174
if use_dbus:
1835
2175
try:
1836
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2176
bus_name = dbus.service.BusName("se.recompile.Mandos",
1837
2177
bus, do_not_queue=True)
1838
except dbus.exceptions.NameExistsException, e:
1839
logger.error(unicode(e) + u", disabling D-Bus")
2178
old_bus_name = (dbus.service.BusName
2179
("se.bsnet.fukt.Mandos", bus,
2180
do_not_queue=True))
2181
except dbus.exceptions.NameExistsException as e:
2182
logger.error(unicode(e) + ", disabling D-Bus")
1840
2183
use_dbus = False
1841
server_settings[u"use_dbus"] = False
2184
server_settings["use_dbus"] = False
1842
2185
tcp_server.use_dbus = False
1843
2186
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1844
service = AvahiService(name = server_settings[u"servicename"],
1845
servicetype = u"_mandos._tcp",
1846
protocol = protocol, bus = bus)
2187
service = AvahiServiceToSyslog(name =
2188
server_settings["servicename"],
2189
servicetype = "_mandos._tcp",
2190
protocol = protocol, bus = bus)
1847
2191
if server_settings["interface"]:
1848
2192
service.interface = (if_nametoindex
1849
(str(server_settings[u"interface"])))
1850
1851
if not debug:
1852
# Close all input and output, do double fork, etc.
1853
daemon()
1854
2193
(str(server_settings["interface"])))
2194
1855
2195
global multiprocessing_manager
1856
2196
multiprocessing_manager = multiprocessing.Manager()
1857
2197
1858
2198
client_class = Client
1859
2199
if use_dbus:
1860
client_class = functools.partial(ClientDBus, bus = bus)
1861
def client_config_items(config, section):
1862
special_settings = {
1863
"approved_by_default":
1864
lambda: config.getboolean(section,
1865
"approved_by_default"),
1866
}
1867
for name, value in config.items(section):
2200
client_class = functools.partial(ClientDBusTransitional,
2201
bus = bus)
2202
2203
client_settings = Client.config_parser(client_config)
2204
old_client_settings = {}
2205
clients_data = {}
2206
2207
# Get client data and settings from last running state.
2208
if server_settings["restore"]:
2209
try:
2210
with open(stored_state_path, "rb") as stored_state:
2211
clients_data, old_client_settings = (pickle.load
2212
(stored_state))
2213
os.remove(stored_state_path)
2214
except IOError as e:
2215
logger.warning("Could not load persistent state: {0}"
2216
.format(e))
2217
if e.errno != errno.ENOENT:
2218
raise
2219
except EOFError as e:
2220
logger.warning("Could not load persistent state: "
2221
"EOFError: {0}".format(e))
2222
2223
with PGPEngine() as pgp:
2224
for client_name, client in clients_data.iteritems():
2225
# Decide which value to use after restoring saved state.
2226
# We have three different values: Old config file,
2227
# new config file, and saved state.
2228
# New config value takes precedence if it differs from old
2229
# config value, otherwise use saved state.
2230
for name, value in client_settings[client_name].items():
2231
try:
2232
# For each value in new config, check if it
2233
# differs from the old config value (Except for
2234
# the "secret" attribute)
2235
if (name != "secret" and
2236
value != old_client_settings[client_name]
2237
[name]):
2238
client[name] = value
2239
except KeyError:
2240
pass
2241
2242
# Clients who has passed its expire date can still be
2243
# enabled if its last checker was successful. Clients
2244
# whose checker failed before we stored its state is
2245
# assumed to have failed all checkers during downtime.
2246
if client["enabled"]:
2247
if datetime.datetime.utcnow() >= client["expires"]:
2248
if not client["last_checked_ok"]:
2249
logger.warning(
2250
"disabling client {0} - Client never "
2251
"performed a successfull checker"
2252
.format(client["name"]))
2253
client["enabled"] = False
2254
elif client["last_checker_status"] != 0:
2255
logger.warning(
2256
"disabling client {0} - Client "
2257
"last checker failed with error code {1}"
2258
.format(client["name"],
2259
client["last_checker_status"]))
2260
client["enabled"] = False
2261
else:
2262
client["expires"] = (datetime.datetime
2263
.utcnow()
2264
+ client["timeout"])
2265
1868
2266
try:
1869
yield (name, special_settings[name]())
1870
except KeyError:
1871
yield (name, value)
1872
1873
tcp_server.clients.update(set(
1874
client_class(name = section,
1875
config= dict(client_config_items(
1876
client_config, section)))
1877
for section in client_config.sections()))
2267
client["secret"] = (
2268
pgp.decrypt(client["encrypted_secret"],
2269
client_settings[client_name]
2270
["secret"]))
2271
except PGPError:
2272
# If decryption fails, we use secret from new settings
2273
logger.debug("Failed to decrypt {0} old secret"
2274
.format(client_name))
2275
client["secret"] = (
2276
client_settings[client_name]["secret"])
2277
2278
2279
# Add/remove clients based on new changes made to config
2280
for client_name in set(old_client_settings) - set(client_settings):
2281
del clients_data[client_name]
2282
for client_name in set(client_settings) - set(old_client_settings):
2283
clients_data[client_name] = client_settings[client_name]
2284
2285
# Create clients all clients
2286
for client_name, client in clients_data.iteritems():
2287
tcp_server.clients[client_name] = client_class(
2288
name = client_name, settings = client)
2289
1878
2290
if not tcp_server.clients:
1879
logger.warning(u"No clients defined")
2291
logger.warning("No clients defined")
1880
2292
1881
2293
if not debug:
1882
2294
try:
1883
2295
with pidfile:
1884
2296
pid = os.getpid()
1885
pidfile.write(str(pid) + "\n")
2297
pidfile.write(str(pid) + "\n".encode("utf-8"))
1886
2298
del pidfile
1887
2299
except IOError:
1888
logger.error(u"Could not write to file %r with PID %d",
2300
logger.error("Could not write to file %r with PID %d",
1889
2301
pidfilename, pid)
1890
2302
except NameError:
1891
2303
# "pidfile" was never created
1892
2304
pass
1893
2305
del pidfilename
1894
1895
2306
signal.signal(signal.SIGINT, signal.SIG_IGN)
1896
2307
1897
2308
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1898
2309
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1899
2310
1901
2312
class MandosDBusService(dbus.service.Object):
1902
2313
"""A D-Bus proxy object"""
1903
2314
def __init__(self):
1904
dbus.service.Object.__init__(self, bus, u"/")
1905
_interface = u"se.bsnet.fukt.Mandos"
2315
dbus.service.Object.__init__(self, bus, "/")
2316
_interface = "se.recompile.Mandos"
1906
2317
1907
@dbus.service.signal(_interface, signature=u"o")
2318
@dbus.service.signal(_interface, signature="o")
1908
2319
def ClientAdded(self, objpath):
1909
2320
"D-Bus signal"
1910
2321
pass
1911
2322
1912
@dbus.service.signal(_interface, signature=u"ss")
2323
@dbus.service.signal(_interface, signature="ss")
1913
2324
def ClientNotFound(self, fingerprint, address):
1914
2325
"D-Bus signal"
1915
2326
pass
1916
2327
1917
@dbus.service.signal(_interface, signature=u"os")
2328
@dbus.service.signal(_interface, signature="os")
1918
2329
def ClientRemoved(self, objpath, name):
1919
2330
"D-Bus signal"
1920
2331
pass
1921
2332
1922
@dbus.service.method(_interface, out_signature=u"ao")
2333
@dbus.service.method(_interface, out_signature="ao")
1923
2334
def GetAllClients(self):
1924
2335
"D-Bus method"
1925
2336
return dbus.Array(c.dbus_object_path
1926
for c in tcp_server.clients)
2337
for c in
2338
tcp_server.clients.itervalues())
1927
2339
1928
2340
@dbus.service.method(_interface,
1929
out_signature=u"a{oa{sv}}")
2341
out_signature="a{oa{sv}}")
1930
2342
def GetAllClientsWithProperties(self):
1931
2343
"D-Bus method"
1932
2344
return dbus.Dictionary(
1933
((c.dbus_object_path, c.GetAll(u""))
1934
for c in tcp_server.clients),
1935
signature=u"oa{sv}")
2345
((c.dbus_object_path, c.GetAll(""))
2346
for c in tcp_server.clients.itervalues()),
2347
signature="oa{sv}")
1936
2348
1937
@dbus.service.method(_interface, in_signature=u"o")
2349
@dbus.service.method(_interface, in_signature="o")
1938
2350
def RemoveClient(self, object_path):
1939
2351
"D-Bus method"
1940
for c in tcp_server.clients:
2352
for c in tcp_server.clients.itervalues():
1941
2353
if c.dbus_object_path == object_path:
1942
tcp_server.clients.remove(c)
2354
del tcp_server.clients[c.name]
1943
2355
c.remove_from_connection()
1944
2356
# Don't signal anything except ClientRemoved
1945
2357
c.disable(quiet=True)
1950
2362
1951
2363
del _interface
1952
2364
1953
mandos_dbus_service = MandosDBusService()
2365
class MandosDBusServiceTransitional(MandosDBusService):
2366
__metaclass__ = AlternateDBusNamesMetaclass
2367
mandos_dbus_service = MandosDBusServiceTransitional()
1954
2368
1955
2369
def cleanup():
1956
2370
"Cleanup function; run on exit"
1957
2371
service.cleanup()
1958
2372
2373
multiprocessing.active_children()
2374
if not (tcp_server.clients or client_settings):
2375
return
2376
2377
# Store client before exiting. Secrets are encrypted with key
2378
# based on what config file has. If config file is
2379
# removed/edited, old secret will thus be unrecovable.
2380
clients = {}
2381
with PGPEngine() as pgp:
2382
for client in tcp_server.clients.itervalues():
2383
key = client_settings[client.name]["secret"]
2384
client.encrypted_secret = pgp.encrypt(client.secret,
2385
key)
2386
client_dict = {}
2387
2388
# A list of attributes that can not be pickled
2389
# + secret.
2390
exclude = set(("bus", "changedstate", "secret",
2391
"checker"))
2392
for name, typ in (inspect.getmembers
2393
(dbus.service.Object)):
2394
exclude.add(name)
2395
2396
client_dict["encrypted_secret"] = (client
2397
.encrypted_secret)
2398
for attr in client.client_structure:
2399
if attr not in exclude:
2400
client_dict[attr] = getattr(client, attr)
2401
2402
clients[client.name] = client_dict
2403
del client_settings[client.name]["secret"]
2404
2405
try:
2406
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2407
prefix="clients-",
2408
dir=os.path.dirname
2409
(stored_state_path))
2410
with os.fdopen(tempfd, "wb") as stored_state:
2411
pickle.dump((clients, client_settings), stored_state)
2412
os.rename(tempname, stored_state_path)
2413
except (IOError, OSError) as e:
2414
logger.warning("Could not save persistent state: {0}"
2415
.format(e))
2416
if not debug:
2417
try:
2418
os.remove(tempname)
2419
except NameError:
2420
pass
2421
if e.errno not in set((errno.ENOENT, errno.EACCES,
2422
errno.EEXIST)):
2423
raise e
2424
2425
# Delete all clients, and settings from config
1959
2426
while tcp_server.clients:
1960
client = tcp_server.clients.pop()
2427
name, client = tcp_server.clients.popitem()
1961
2428
if use_dbus:
1962
2429
client.remove_from_connection()
1963
client.disable_hook = None
1964
2430
# Don't signal anything except ClientRemoved
1965
2431
client.disable(quiet=True)
1966
2432
if use_dbus:
1967
2433
# Emit D-Bus signal
1968
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2434
mandos_dbus_service.ClientRemoved(client
2435
.dbus_object_path,
1969
2436
client.name)
2437
client_settings.clear()
1970
2438
1971
2439
atexit.register(cleanup)
1972
2440
1973
for client in tcp_server.clients:
2441
for client in tcp_server.clients.itervalues():
1974
2442
if use_dbus:
1975
2443
# Emit D-Bus signal
1976
2444
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1977
client.enable()
2445
# Need to initiate checking of clients
2446
if client.enabled:
2447
client.init_checker()
1978
2448
1979
2449
tcp_server.enable()
1980
2450
tcp_server.server_activate()
1982
2452
# Find out what port we got
1983
2453
service.port = tcp_server.socket.getsockname()[1]
1984
2454
if use_ipv6:
1985
logger.info(u"Now listening on address %r, port %d,"
2455
logger.info("Now listening on address %r, port %d,"
1986
2456
" flowinfo %d, scope_id %d"
1987
2457
% tcp_server.socket.getsockname())
1988
2458
else: # IPv4
1989
logger.info(u"Now listening on address %r, port %d"
2459
logger.info("Now listening on address %r, port %d"
1990
2460
% tcp_server.socket.getsockname())
1991
2461
1992
2462
#service.interface = tcp_server.socket.getsockname()[3]
1995
2465
# From the Avahi example code
1996
2466
try:
1997
2467
service.activate()
1998
except dbus.exceptions.DBusException, error:
1999
logger.critical(u"DBusException: %s", error)
2468
except dbus.exceptions.DBusException as error:
2469
logger.critical("DBusException: %s", error)
2000
2470
cleanup()
2001
2471
sys.exit(1)
2002
2472
# End of Avahi example code
2006
2476
(tcp_server.handle_request
2007
2477
(*args[2:], **kwargs) or True))
2008
2478
2009
logger.debug(u"Starting main loop")
2479
logger.debug("Starting main loop")
2010
2480
main_loop.run()
2011
except AvahiError, error:
2012
logger.critical(u"AvahiError: %s", error)
2481
except AvahiError as error:
2482
logger.critical("AvahiError: %s", error)
2013
2483
cleanup()
2014
2484
sys.exit(1)
2015
2485
except KeyboardInterrupt:
2016
2486
if debug:
2017
print >> sys.stderr
2018
logger.debug(u"Server received KeyboardInterrupt")
2019
logger.debug(u"Server exiting")
2487
print("", file=sys.stderr)
2488
logger.debug("Server received KeyboardInterrupt")
2489
logger.debug("Server exiting")
2020
2490
# Must run before the D-Bus bus name gets deregistered
2021
2491
cleanup()
2022
2492
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0