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- Committer: Björn Påhlsson
- Date: 2011-12-21 00:33:12 UTC
- mfrom: (505.2.13 mandos-client-network-hooks)
- Revision ID: belorn@recompile.se-20111221003312-jwn6d76u2c2lejoz
working new feature: network-hooks - Enables user-scripts to take up
interfaces during bootup
interfaces during bootup
- files added:
- debian/source
- network-hooks.d
- files modified:
- DBUS-API
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2010 Teddy Hogeborn
15
# Copyright © 2008-2010 Björn Påhlsson
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# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
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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
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import errno
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42
import gnutls.crypto
61
62
import functools
62
63
import cPickle as pickle
63
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import multiprocessing
65
import types
66
import binascii
67
import tempfile
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68
65
69
import dbus
66
70
import dbus.service
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75
import ctypes.util
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76
import xml.dom.minidom
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77
import inspect
78
import GnuPGInterface
74
79
75
80
try:
76
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
80
85
except ImportError:
81
86
SO_BINDTODEVICE = None
82
87
83
84
version = "1.2"
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
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(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)
95
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"),
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ifreq[16:20])[0]
110
return interface_index
111
112
113
def initlogger(level=logging.WARNING):
114
"""init logger and add loglevel"""
115
116
syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
118
' %(message)s'))
119
logger.addHandler(syslogger)
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
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' [%(process)d]:'
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' %(levelname)s:'
125
' %(message)s'))
126
logger.addHandler(console)
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logger.setLevel(level)
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129
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class PGPError(Exception):
131
"""Exception if encryption/decryption fails"""
132
pass
133
134
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class PGPEngine(object):
136
"""A simple class for OpenPGP symmetric encryption & decryption"""
137
def __init__(self):
138
self.gnupg = GnuPGInterface.GnuPG()
139
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.gnupg.options.meta_interactive = False
142
self.gnupg.options.homedir = self.tempdir
143
self.gnupg.options.extra_args.extend(['--force-mdc',
144
'--quiet'])
145
146
def __enter__(self):
147
return self
148
149
def __exit__ (self, exc_type, exc_value, traceback):
150
self._cleanup()
151
return False
152
153
def __del__(self):
154
self._cleanup()
155
156
def _cleanup(self):
157
if self.tempdir is not None:
158
# Delete contents of tempdir
159
for root, dirs, files in os.walk(self.tempdir,
160
topdown = False):
161
for filename in files:
162
os.remove(os.path.join(root, filename))
163
for dirname in dirs:
164
os.rmdir(os.path.join(root, dirname))
165
# Remove tempdir
166
os.rmdir(self.tempdir)
167
self.tempdir = None
168
169
def password_encode(self, password):
170
# Passphrase can not be empty and can not contain newlines or
171
# NUL bytes. So we prefix it and hex encode it.
172
return b"mandos" + binascii.hexlify(password)
173
174
def encrypt(self, data, password):
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
177
try:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
182
f.write(data)
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
185
proc.wait()
186
except IOError as e:
187
raise PGPError(e)
188
self.gnupg.passphrase = None
189
return ciphertext
190
191
def decrypt(self, data, password):
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
194
try:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
199
f.write(data)
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
202
proc.wait()
203
except IOError as e:
204
raise PGPError(e)
205
self.gnupg.passphrase = None
206
return decrypted_plaintext
207
208
101
209
102
210
class AvahiError(Exception):
103
211
def __init__(self, value, *args, **kwargs):
119
227
Attributes:
120
228
interface: integer; avahi.IF_UNSPEC or an interface index.
121
229
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
230
name: string; Example: 'Mandos'
231
type: string; Example: '_mandos._tcp'.
124
232
See <http://www.dns-sd.org/ServiceTypes.html>
125
233
port: integer; what port to announce
126
234
TXT: list of strings; TXT record for the service
135
243
"""
136
244
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
245
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
246
domain = "", host = "", max_renames = 32768,
139
247
protocol = avahi.PROTO_UNSPEC, bus = None):
140
248
self.interface = interface
141
249
self.name = name
150
258
self.group = None # our entry group
151
259
self.server = None
152
260
self.bus = bus
261
self.entry_group_state_changed_match = None
153
262
def rename(self):
154
263
"""Derived from the Avahi example code"""
155
264
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
265
logger.critical("No suitable Zeroconf service name found"
266
" after %i retries, exiting.",
158
267
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 ...",
268
raise AvahiServiceError("Too many renames")
269
self.name = unicode(self.server
270
.GetAlternativeServiceName(self.name))
271
logger.info("Changing Zeroconf service name to %r ...",
162
272
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
273
self.remove()
168
274
try:
169
275
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
276
except dbus.exceptions.DBusException as error:
277
logger.critical("DBusException: %s", error)
172
278
self.cleanup()
173
279
os._exit(1)
174
280
self.rename_count += 1
175
281
def remove(self):
176
282
"""Derived from the Avahi example code"""
283
if self.entry_group_state_changed_match is not None:
284
self.entry_group_state_changed_match.remove()
285
self.entry_group_state_changed_match = None
177
286
if self.group is not None:
178
287
self.group.Reset()
179
288
def add(self):
180
289
"""Derived from the Avahi example code"""
290
self.remove()
181
291
if self.group is None:
182
292
self.group = dbus.Interface(
183
293
self.bus.get_object(avahi.DBUS_NAME,
184
294
self.server.EntryGroupNew()),
185
295
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' ...",
296
self.entry_group_state_changed_match = (
297
self.group.connect_to_signal(
298
'StateChanged', self.entry_group_state_changed))
299
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
190
300
self.name, self.type)
191
301
self.group.AddService(
192
302
self.interface,
199
309
self.group.Commit()
200
310
def entry_group_state_changed(self, state, error):
201
311
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
312
logger.debug("Avahi entry group state change: %i", state)
203
313
204
314
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
315
logger.debug("Zeroconf service established.")
206
316
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
317
logger.info("Zeroconf service name collision.")
208
318
self.rename()
209
319
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
320
logger.critical("Avahi: Error in group state changed %s",
211
321
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
322
raise AvahiGroupError("State changed: %s"
213
323
% unicode(error))
214
324
def cleanup(self):
215
325
"""Derived from the Avahi example code"""
216
326
if self.group is not None:
217
self.group.Free()
327
try:
328
self.group.Free()
329
except (dbus.exceptions.UnknownMethodException,
330
dbus.exceptions.DBusException):
331
pass
218
332
self.group = None
219
def server_state_changed(self, state):
333
self.remove()
334
def server_state_changed(self, state, error=None):
220
335
"""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()
336
logger.debug("Avahi server state change: %i", state)
337
bad_states = { avahi.SERVER_INVALID:
338
"Zeroconf server invalid",
339
avahi.SERVER_REGISTERING: None,
340
avahi.SERVER_COLLISION:
341
"Zeroconf server name collision",
342
avahi.SERVER_FAILURE:
343
"Zeroconf server failure" }
344
if state in bad_states:
345
if bad_states[state] is not None:
346
if error is None:
347
logger.error(bad_states[state])
348
else:
349
logger.error(bad_states[state] + ": %r", error)
350
self.cleanup()
225
351
elif state == avahi.SERVER_RUNNING:
226
352
self.add()
353
else:
354
if error is None:
355
logger.debug("Unknown state: %r", state)
356
else:
357
logger.debug("Unknown state: %r: %r", state, error)
227
358
def activate(self):
228
359
"""Derived from the Avahi example code"""
229
360
if self.server is None:
230
361
self.server = dbus.Interface(
231
362
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
363
avahi.DBUS_PATH_SERVER,
364
follow_name_owner_changes=True),
233
365
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
366
self.server.connect_to_signal("StateChanged",
235
367
self.server_state_changed)
236
368
self.server_state_changed(self.server.GetState())
237
369
370
class AvahiServiceToSyslog(AvahiService):
371
def rename(self):
372
"""Add the new name to the syslog messages"""
373
ret = AvahiService.rename(self)
374
syslogger.setFormatter(logging.Formatter
375
('Mandos (%s) [%%(process)d]:'
376
' %%(levelname)s: %%(message)s'
377
% self.name))
378
return ret
238
379
380
def timedelta_to_milliseconds(td):
381
"Convert a datetime.timedelta() to milliseconds"
382
return ((td.days * 24 * 60 * 60 * 1000)
383
+ (td.seconds * 1000)
384
+ (td.microseconds // 1000))
385
239
386
class Client(object):
240
387
"""A representation of a client host served by this server.
241
388
242
389
Attributes:
243
_approved: bool(); 'None' if not yet approved/disapproved
390
approved: bool(); 'None' if not yet approved/disapproved
244
391
approval_delay: datetime.timedelta(); Time to wait for approval
245
392
approval_duration: datetime.timedelta(); Duration of one approval
246
393
checker: subprocess.Popen(); a running checker process used
253
400
instance %(name)s can be used in the command.
254
401
checker_initiator_tag: a gobject event source tag, or None
255
402
created: datetime.datetime(); (UTC) object creation
403
client_structure: Object describing what attributes a client has
404
and is used for storing the client at exit
256
405
current_checker_command: string; current running checker_command
257
disable_hook: If set, called by disable() as disable_hook(self)
258
406
disable_initiator_tag: a gobject event source tag, or None
259
407
enabled: bool()
260
408
fingerprint: string (40 or 32 hexadecimal digits); used to
263
411
interval: datetime.timedelta(); How often to start a new checker
264
412
last_approval_request: datetime.datetime(); (UTC) or None
265
413
last_checked_ok: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
414
last_checker_status: integer between 0 and 255 reflecting exit
415
status of last checker. -1 reflects crashed
416
checker, or None.
417
last_enabled: datetime.datetime(); (UTC) or None
267
418
name: string; from the config file, used in log messages and
268
419
D-Bus identifiers
269
420
secret: bytestring; sent verbatim (over TLS) to client
270
421
timeout: datetime.timedelta(); How long from last_checked_ok
271
422
until this client is disabled
423
extended_timeout: extra long timeout when password has been sent
272
424
runtime_expansions: Allowed attributes for runtime expansion.
425
expires: datetime.datetime(); time (UTC) when a client will be
426
disabled, or None
273
427
"""
274
428
275
runtime_expansions = (u"approval_delay", u"approval_duration",
276
u"created", u"enabled", u"fingerprint",
277
u"host", u"interval", u"last_checked_ok",
278
u"last_enabled", u"name", u"timeout")
279
280
@staticmethod
281
def _timedelta_to_milliseconds(td):
282
"Convert a datetime.timedelta() to milliseconds"
283
return ((td.days * 24 * 60 * 60 * 1000)
284
+ (td.seconds * 1000)
285
+ (td.microseconds // 1000))
429
runtime_expansions = ("approval_delay", "approval_duration",
430
"created", "enabled", "fingerprint",
431
"host", "interval", "last_checked_ok",
432
"last_enabled", "name", "timeout")
433
client_defaults = { "timeout": "5m",
434
"extended_timeout": "15m",
435
"interval": "2m",
436
"checker": "fping -q -- %%(host)s",
437
"host": "",
438
"approval_delay": "0s",
439
"approval_duration": "1s",
440
"approved_by_default": "True",
441
"enabled": "True",
442
}
286
443
287
444
def timeout_milliseconds(self):
288
445
"Return the 'timeout' attribute in milliseconds"
289
return self._timedelta_to_milliseconds(self.timeout)
446
return timedelta_to_milliseconds(self.timeout)
447
448
def extended_timeout_milliseconds(self):
449
"Return the 'extended_timeout' attribute in milliseconds"
450
return timedelta_to_milliseconds(self.extended_timeout)
290
451
291
452
def interval_milliseconds(self):
292
453
"Return the 'interval' attribute in milliseconds"
293
return self._timedelta_to_milliseconds(self.interval)
294
454
return timedelta_to_milliseconds(self.interval)
455
295
456
def approval_delay_milliseconds(self):
296
return self._timedelta_to_milliseconds(self.approval_delay)
297
298
def __init__(self, name = None, disable_hook=None, config=None):
457
return timedelta_to_milliseconds(self.approval_delay)
458
459
@staticmethod
460
def config_parser(config):
461
""" Construct a new dict of client settings of this form:
462
{ client_name: {setting_name: value, ...}, ...}
463
with exceptions for any special settings as defined above"""
464
settings = {}
465
for client_name in config.sections():
466
section = dict(config.items(client_name))
467
client = settings[client_name] = {}
468
469
client["host"] = section["host"]
470
# Reformat values from string types to Python types
471
client["approved_by_default"] = config.getboolean(
472
client_name, "approved_by_default")
473
client["enabled"] = config.getboolean(client_name, "enabled")
474
475
client["fingerprint"] = (section["fingerprint"].upper()
476
.replace(" ", ""))
477
if "secret" in section:
478
client["secret"] = section["secret"].decode("base64")
479
elif "secfile" in section:
480
with open(os.path.expanduser(os.path.expandvars
481
(section["secfile"])),
482
"rb") as secfile:
483
client["secret"] = secfile.read()
484
else:
485
raise TypeError("No secret or secfile for section %s"
486
% section)
487
client["timeout"] = string_to_delta(section["timeout"])
488
client["extended_timeout"] = string_to_delta(
489
section["extended_timeout"])
490
client["interval"] = string_to_delta(section["interval"])
491
client["approval_delay"] = string_to_delta(
492
section["approval_delay"])
493
client["approval_duration"] = string_to_delta(
494
section["approval_duration"])
495
client["checker_command"] = section["checker"]
496
client["last_approval_request"] = None
497
client["last_checked_ok"] = None
498
client["last_checker_status"] = None
499
if client["enabled"]:
500
client["last_enabled"] = datetime.datetime.utcnow()
501
client["expires"] = (datetime.datetime.utcnow()
502
+ client["timeout"])
503
else:
504
client["last_enabled"] = None
505
client["expires"] = None
506
507
return settings
508
509
510
def __init__(self, settings, name = None):
299
511
"""Note: the 'checker' key in 'config' sets the
300
512
'checker_command' attribute and *not* the 'checker'
301
513
attribute."""
302
514
self.name = name
303
if config is None:
304
config = {}
305
logger.debug(u"Creating client %r", self.name)
515
# adding all client settings
516
for setting, value in settings.iteritems():
517
setattr(self, setting, value)
518
519
logger.debug("Creating client %r", self.name)
306
520
# Uppercase and remove spaces from fingerprint for later
307
521
# comparison purposes with return value from the fingerprint()
308
522
# function
309
self.fingerprint = (config[u"fingerprint"].upper()
310
.replace(u" ", u""))
311
logger.debug(u" Fingerprint: %s", self.fingerprint)
312
if u"secret" in config:
313
self.secret = config[u"secret"].decode(u"base64")
314
elif u"secfile" in config:
315
with open(os.path.expanduser(os.path.expandvars
316
(config[u"secfile"])),
317
"rb") as secfile:
318
self.secret = secfile.read()
319
else:
320
raise TypeError(u"No secret or secfile for client %s"
321
% self.name)
322
self.host = config.get(u"host", u"")
323
self.created = datetime.datetime.utcnow()
324
self.enabled = False
325
self.last_approval_request = None
326
self.last_enabled = None
327
self.last_checked_ok = None
328
self.timeout = string_to_delta(config[u"timeout"])
329
self.interval = string_to_delta(config[u"interval"])
330
self.disable_hook = disable_hook
523
logger.debug(" Fingerprint: %s", self.fingerprint)
524
self.created = settings.get("created", datetime.datetime.utcnow())
525
526
# attributes specific for this server instance
331
527
self.checker = None
332
528
self.checker_initiator_tag = None
333
529
self.disable_initiator_tag = None
334
530
self.checker_callback_tag = None
335
self.checker_command = config[u"checker"]
336
531
self.current_checker_command = None
337
self.last_connect = None
338
self._approved = None
339
self.approved_by_default = config.get(u"approved_by_default",
340
True)
532
self.approved = None
341
533
self.approvals_pending = 0
342
self.approval_delay = string_to_delta(
343
config[u"approval_delay"])
344
self.approval_duration = string_to_delta(
345
config[u"approval_duration"])
346
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
534
self.changedstate = (multiprocessing_manager
535
.Condition(multiprocessing_manager
536
.Lock()))
537
self.client_structure = [attr for attr in
538
self.__dict__.iterkeys()
539
if not attr.startswith("_")]
540
self.client_structure.append("client_structure")
541
542
for name, t in inspect.getmembers(type(self),
543
lambda obj:
544
isinstance(obj,
545
property)):
546
if not name.startswith("_"):
547
self.client_structure.append(name)
347
548
549
# Send notice to process children that client state has changed
348
550
def send_changedstate(self):
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
551
with self.changedstate:
552
self.changedstate.notify_all()
553
353
554
def enable(self):
354
555
"""Start this client's checker and timeout hooks"""
355
if getattr(self, u"enabled", False):
556
if getattr(self, "enabled", False):
356
557
# Already enabled
357
558
return
358
559
self.send_changedstate()
560
self.expires = datetime.datetime.utcnow() + self.timeout
561
self.enabled = True
359
562
self.last_enabled = datetime.datetime.utcnow()
563
self.init_checker()
564
565
def disable(self, quiet=True):
566
"""Disable this client."""
567
if not getattr(self, "enabled", False):
568
return False
569
if not quiet:
570
self.send_changedstate()
571
if not quiet:
572
logger.info("Disabling client %s", self.name)
573
if getattr(self, "disable_initiator_tag", False):
574
gobject.source_remove(self.disable_initiator_tag)
575
self.disable_initiator_tag = None
576
self.expires = None
577
if getattr(self, "checker_initiator_tag", False):
578
gobject.source_remove(self.checker_initiator_tag)
579
self.checker_initiator_tag = None
580
self.stop_checker()
581
self.enabled = False
582
# Do not run this again if called by a gobject.timeout_add
583
return False
584
585
def __del__(self):
586
self.disable()
587
588
def init_checker(self):
360
589
# Schedule a new checker to be started an 'interval' from now,
361
590
# and every interval from then on.
362
591
self.checker_initiator_tag = (gobject.timeout_add
366
595
self.disable_initiator_tag = (gobject.timeout_add
367
596
(self.timeout_milliseconds(),
368
597
self.disable))
369
self.enabled = True
370
598
# Also start a new checker *right now*.
371
599
self.start_checker()
372
600
373
def disable(self, quiet=True):
374
"""Disable this client."""
375
if not getattr(self, "enabled", False):
376
return False
377
if not quiet:
378
self.send_changedstate()
379
if not quiet:
380
logger.info(u"Disabling client %s", self.name)
381
if getattr(self, u"disable_initiator_tag", False):
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = None
384
if getattr(self, u"checker_initiator_tag", False):
385
gobject.source_remove(self.checker_initiator_tag)
386
self.checker_initiator_tag = None
387
self.stop_checker()
388
if self.disable_hook:
389
self.disable_hook(self)
390
self.enabled = False
391
# Do not run this again if called by a gobject.timeout_add
392
return False
393
394
def __del__(self):
395
self.disable_hook = None
396
self.disable()
397
398
601
def checker_callback(self, pid, condition, command):
399
602
"""The checker has completed, so take appropriate actions."""
400
603
self.checker_callback_tag = None
401
604
self.checker = None
402
605
if os.WIFEXITED(condition):
403
exitstatus = os.WEXITSTATUS(condition)
404
if exitstatus == 0:
405
logger.info(u"Checker for %(name)s succeeded",
606
self.last_checker_status = os.WEXITSTATUS(condition)
607
if self.last_checker_status == 0:
608
logger.info("Checker for %(name)s succeeded",
406
609
vars(self))
407
610
self.checked_ok()
408
611
else:
409
logger.info(u"Checker for %(name)s failed",
612
logger.info("Checker for %(name)s failed",
410
613
vars(self))
411
614
else:
412
logger.warning(u"Checker for %(name)s crashed?",
615
self.last_checker_status = -1
616
logger.warning("Checker for %(name)s crashed?",
413
617
vars(self))
414
618
415
def checked_ok(self):
619
def checked_ok(self, timeout=None):
416
620
"""Bump up the timeout for this client.
417
621
418
622
This should only be called when the client has been seen,
419
623
alive and well.
420
624
"""
625
if timeout is None:
626
timeout = self.timeout
421
627
self.last_checked_ok = datetime.datetime.utcnow()
422
gobject.source_remove(self.disable_initiator_tag)
423
self.disable_initiator_tag = (gobject.timeout_add
424
(self.timeout_milliseconds(),
425
self.disable))
628
if self.disable_initiator_tag is not None:
629
gobject.source_remove(self.disable_initiator_tag)
630
if getattr(self, "enabled", False):
631
self.disable_initiator_tag = (gobject.timeout_add
632
(timedelta_to_milliseconds
633
(timeout), self.disable))
634
self.expires = datetime.datetime.utcnow() + timeout
426
635
427
636
def need_approval(self):
428
637
self.last_approval_request = datetime.datetime.utcnow()
444
653
# If a checker exists, make sure it is not a zombie
445
654
try:
446
655
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
447
except (AttributeError, OSError), error:
656
except (AttributeError, OSError) as error:
448
657
if (isinstance(error, OSError)
449
658
and error.errno != errno.ECHILD):
450
659
raise error
451
660
else:
452
661
if pid:
453
logger.warning(u"Checker was a zombie")
662
logger.warning("Checker was a zombie")
454
663
gobject.source_remove(self.checker_callback_tag)
455
664
self.checker_callback(pid, status,
456
665
self.current_checker_command)
463
672
# Escape attributes for the shell
464
673
escaped_attrs = dict(
465
674
(attr,
466
re.escape(unicode(str(getattr(self, attr, u"")),
675
re.escape(unicode(str(getattr(self, attr, "")),
467
676
errors=
468
u'replace')))
677
'replace')))
469
678
for attr in
470
679
self.runtime_expansions)
471
680
472
681
try:
473
682
command = self.checker_command % escaped_attrs
474
except TypeError, error:
475
logger.error(u'Could not format string "%s":'
476
u' %s', self.checker_command, error)
683
except TypeError as error:
684
logger.error('Could not format string "%s":'
685
' %s', self.checker_command, error)
477
686
return True # Try again later
478
687
self.current_checker_command = command
479
688
try:
480
logger.info(u"Starting checker %r for %s",
689
logger.info("Starting checker %r for %s",
481
690
command, self.name)
482
691
# We don't need to redirect stdout and stderr, since
483
692
# in normal mode, that is already done by daemon(),
485
694
# always replaced by /dev/null.)
486
695
self.checker = subprocess.Popen(command,
487
696
close_fds=True,
488
shell=True, cwd=u"/")
697
shell=True, cwd="/")
489
698
self.checker_callback_tag = (gobject.child_watch_add
490
699
(self.checker.pid,
491
700
self.checker_callback,
496
705
if pid:
497
706
gobject.source_remove(self.checker_callback_tag)
498
707
self.checker_callback(pid, status, command)
499
except OSError, error:
500
logger.error(u"Failed to start subprocess: %s",
708
except OSError as error:
709
logger.error("Failed to start subprocess: %s",
501
710
error)
502
711
# Re-run this periodically if run by gobject.timeout_add
503
712
return True
507
716
if self.checker_callback_tag:
508
717
gobject.source_remove(self.checker_callback_tag)
509
718
self.checker_callback_tag = None
510
if getattr(self, u"checker", None) is None:
719
if getattr(self, "checker", None) is None:
511
720
return
512
logger.debug(u"Stopping checker for %(name)s", vars(self))
721
logger.debug("Stopping checker for %(name)s", vars(self))
513
722
try:
514
723
os.kill(self.checker.pid, signal.SIGTERM)
515
724
#time.sleep(0.5)
516
725
#if self.checker.poll() is None:
517
726
# os.kill(self.checker.pid, signal.SIGKILL)
518
except OSError, error:
727
except OSError as error:
519
728
if error.errno != errno.ESRCH: # No such process
520
729
raise
521
730
self.checker = None
522
731
523
def dbus_service_property(dbus_interface, signature=u"v",
524
access=u"readwrite", byte_arrays=False):
732
733
def dbus_service_property(dbus_interface, signature="v",
734
access="readwrite", byte_arrays=False):
525
735
"""Decorators for marking methods of a DBusObjectWithProperties to
526
736
become properties on the D-Bus.
527
737
534
744
"""
535
745
# Encoding deeply encoded byte arrays is not supported yet by the
536
746
# "Set" method, so we fail early here:
537
if byte_arrays and signature != u"ay":
538
raise ValueError(u"Byte arrays not supported for non-'ay'"
539
u" signature %r" % signature)
747
if byte_arrays and signature != "ay":
748
raise ValueError("Byte arrays not supported for non-'ay'"
749
" signature %r" % signature)
540
750
def decorator(func):
541
751
func._dbus_is_property = True
542
752
func._dbus_interface = dbus_interface
543
753
func._dbus_signature = signature
544
754
func._dbus_access = access
545
755
func._dbus_name = func.__name__
546
if func._dbus_name.endswith(u"_dbus_property"):
756
if func._dbus_name.endswith("_dbus_property"):
547
757
func._dbus_name = func._dbus_name[:-14]
548
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
758
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
549
759
return func
550
760
return decorator
551
761
571
781
572
782
class DBusObjectWithProperties(dbus.service.Object):
573
783
"""A D-Bus object with properties.
574
784
575
785
Classes inheriting from this can use the dbus_service_property
576
786
decorator to expose methods as D-Bus properties. It exposes the
577
787
standard Get(), Set(), and GetAll() methods on the D-Bus.
579
789
580
790
@staticmethod
581
791
def _is_dbus_property(obj):
582
return getattr(obj, u"_dbus_is_property", False)
792
return getattr(obj, "_dbus_is_property", False)
583
793
584
794
def _get_all_dbus_properties(self):
585
795
"""Returns a generator of (name, attribute) pairs
586
796
"""
587
return ((prop._dbus_name, prop)
797
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
798
for cls in self.__class__.__mro__
588
799
for name, prop in
589
inspect.getmembers(self, self._is_dbus_property))
800
inspect.getmembers(cls, self._is_dbus_property))
590
801
591
802
def _get_dbus_property(self, interface_name, property_name):
592
803
"""Returns a bound method if one exists which is a D-Bus
593
804
property with the specified name and interface.
594
805
"""
595
for name in (property_name,
596
property_name + u"_dbus_property"):
597
prop = getattr(self, name, None)
598
if (prop is None
599
or not self._is_dbus_property(prop)
600
or prop._dbus_name != property_name
601
or (interface_name and prop._dbus_interface
602
and interface_name != prop._dbus_interface)):
603
continue
604
return prop
806
for cls in self.__class__.__mro__:
807
for name, value in (inspect.getmembers
808
(cls, self._is_dbus_property)):
809
if (value._dbus_name == property_name
810
and value._dbus_interface == interface_name):
811
return value.__get__(self)
812
605
813
# No such property
606
raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
+ interface_name + u"."
814
raise DBusPropertyNotFound(self.dbus_object_path + ":"
815
+ interface_name + "."
608
816
+ property_name)
609
817
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
611
out_signature=u"v")
818
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
819
out_signature="v")
612
820
def Get(self, interface_name, property_name):
613
821
"""Standard D-Bus property Get() method, see D-Bus standard.
614
822
"""
615
823
prop = self._get_dbus_property(interface_name, property_name)
616
if prop._dbus_access == u"write":
824
if prop._dbus_access == "write":
617
825
raise DBusPropertyAccessException(property_name)
618
826
value = prop()
619
if not hasattr(value, u"variant_level"):
827
if not hasattr(value, "variant_level"):
620
828
return value
621
829
return type(value)(value, variant_level=value.variant_level+1)
622
830
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
831
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
624
832
def Set(self, interface_name, property_name, value):
625
833
"""Standard D-Bus property Set() method, see D-Bus standard.
626
834
"""
627
835
prop = self._get_dbus_property(interface_name, property_name)
628
if prop._dbus_access == u"read":
836
if prop._dbus_access == "read":
629
837
raise DBusPropertyAccessException(property_name)
630
if prop._dbus_get_args_options[u"byte_arrays"]:
838
if prop._dbus_get_args_options["byte_arrays"]:
631
839
# The byte_arrays option is not supported yet on
632
840
# signatures other than "ay".
633
if prop._dbus_signature != u"ay":
841
if prop._dbus_signature != "ay":
634
842
raise ValueError
635
843
value = dbus.ByteArray(''.join(unichr(byte)
636
844
for byte in value))
637
845
prop(value)
638
846
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
847
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
848
out_signature="a{sv}")
641
849
def GetAll(self, interface_name):
642
850
"""Standard D-Bus property GetAll() method, see D-Bus
643
851
standard.
644
852
645
853
Note: Will not include properties with access="write".
646
854
"""
647
all = {}
855
properties = {}
648
856
for name, prop in self._get_all_dbus_properties():
649
857
if (interface_name
650
858
and interface_name != prop._dbus_interface):
651
859
# Interface non-empty but did not match
652
860
continue
653
861
# Ignore write-only properties
654
if prop._dbus_access == u"write":
862
if prop._dbus_access == "write":
655
863
continue
656
864
value = prop()
657
if not hasattr(value, u"variant_level"):
658
all[name] = value
865
if not hasattr(value, "variant_level"):
866
properties[name] = value
659
867
continue
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
868
properties[name] = type(value)(value, variant_level=
869
value.variant_level+1)
870
return dbus.Dictionary(properties, signature="sv")
663
871
664
872
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
665
out_signature=u"s",
873
out_signature="s",
666
874
path_keyword='object_path',
667
875
connection_keyword='connection')
668
876
def Introspect(self, object_path, connection):
673
881
try:
674
882
document = xml.dom.minidom.parseString(xmlstring)
675
883
def make_tag(document, name, prop):
676
e = document.createElement(u"property")
677
e.setAttribute(u"name", name)
678
e.setAttribute(u"type", prop._dbus_signature)
679
e.setAttribute(u"access", prop._dbus_access)
884
e = document.createElement("property")
885
e.setAttribute("name", name)
886
e.setAttribute("type", prop._dbus_signature)
887
e.setAttribute("access", prop._dbus_access)
680
888
return e
681
for if_tag in document.getElementsByTagName(u"interface"):
889
for if_tag in document.getElementsByTagName("interface"):
682
890
for tag in (make_tag(document, name, prop)
683
891
for name, prop
684
892
in self._get_all_dbus_properties()
685
893
if prop._dbus_interface
686
== if_tag.getAttribute(u"name")):
894
== if_tag.getAttribute("name")):
687
895
if_tag.appendChild(tag)
688
896
# Add the names to the return values for the
689
897
# "org.freedesktop.DBus.Properties" methods
690
if (if_tag.getAttribute(u"name")
691
== u"org.freedesktop.DBus.Properties"):
692
for cn in if_tag.getElementsByTagName(u"method"):
693
if cn.getAttribute(u"name") == u"Get":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"value")
698
elif cn.getAttribute(u"name") == u"GetAll":
699
for arg in cn.getElementsByTagName(u"arg"):
700
if (arg.getAttribute(u"direction")
701
== u"out"):
702
arg.setAttribute(u"name", u"props")
703
xmlstring = document.toxml(u"utf-8")
898
if (if_tag.getAttribute("name")
899
== "org.freedesktop.DBus.Properties"):
900
for cn in if_tag.getElementsByTagName("method"):
901
if cn.getAttribute("name") == "Get":
902
for arg in cn.getElementsByTagName("arg"):
903
if (arg.getAttribute("direction")
904
== "out"):
905
arg.setAttribute("name", "value")
906
elif cn.getAttribute("name") == "GetAll":
907
for arg in cn.getElementsByTagName("arg"):
908
if (arg.getAttribute("direction")
909
== "out"):
910
arg.setAttribute("name", "props")
911
xmlstring = document.toxml("utf-8")
704
912
document.unlink()
705
913
except (AttributeError, xml.dom.DOMException,
706
xml.parsers.expat.ExpatError), error:
707
logger.error(u"Failed to override Introspection method",
914
xml.parsers.expat.ExpatError) as error:
915
logger.error("Failed to override Introspection method",
708
916
error)
709
917
return xmlstring
710
918
711
919
920
def datetime_to_dbus (dt, variant_level=0):
921
"""Convert a UTC datetime.datetime() to a D-Bus type."""
922
if dt is None:
923
return dbus.String("", variant_level = variant_level)
924
return dbus.String(dt.isoformat(),
925
variant_level=variant_level)
926
927
928
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
929
.__metaclass__):
930
"""Applied to an empty subclass of a D-Bus object, this metaclass
931
will add additional D-Bus attributes matching a certain pattern.
932
"""
933
def __new__(mcs, name, bases, attr):
934
# Go through all the base classes which could have D-Bus
935
# methods, signals, or properties in them
936
for base in (b for b in bases
937
if issubclass(b, dbus.service.Object)):
938
# Go though all attributes of the base class
939
for attrname, attribute in inspect.getmembers(base):
940
# Ignore non-D-Bus attributes, and D-Bus attributes
941
# with the wrong interface name
942
if (not hasattr(attribute, "_dbus_interface")
943
or not attribute._dbus_interface
944
.startswith("se.recompile.Mandos")):
945
continue
946
# Create an alternate D-Bus interface name based on
947
# the current name
948
alt_interface = (attribute._dbus_interface
949
.replace("se.recompile.Mandos",
950
"se.bsnet.fukt.Mandos"))
951
# Is this a D-Bus signal?
952
if getattr(attribute, "_dbus_is_signal", False):
953
# Extract the original non-method function by
954
# black magic
955
nonmethod_func = (dict(
956
zip(attribute.func_code.co_freevars,
957
attribute.__closure__))["func"]
958
.cell_contents)
959
# Create a new, but exactly alike, function
960
# object, and decorate it to be a new D-Bus signal
961
# with the alternate D-Bus interface name
962
new_function = (dbus.service.signal
963
(alt_interface,
964
attribute._dbus_signature)
965
(types.FunctionType(
966
nonmethod_func.func_code,
967
nonmethod_func.func_globals,
968
nonmethod_func.func_name,
969
nonmethod_func.func_defaults,
970
nonmethod_func.func_closure)))
971
# Define a creator of a function to call both the
972
# old and new functions, so both the old and new
973
# signals gets sent when the function is called
974
def fixscope(func1, func2):
975
"""This function is a scope container to pass
976
func1 and func2 to the "call_both" function
977
outside of its arguments"""
978
def call_both(*args, **kwargs):
979
"""This function will emit two D-Bus
980
signals by calling func1 and func2"""
981
func1(*args, **kwargs)
982
func2(*args, **kwargs)
983
return call_both
984
# Create the "call_both" function and add it to
985
# the class
986
attr[attrname] = fixscope(attribute,
987
new_function)
988
# Is this a D-Bus method?
989
elif getattr(attribute, "_dbus_is_method", False):
990
# Create a new, but exactly alike, function
991
# object. Decorate it to be a new D-Bus method
992
# with the alternate D-Bus interface name. Add it
993
# to the class.
994
attr[attrname] = (dbus.service.method
995
(alt_interface,
996
attribute._dbus_in_signature,
997
attribute._dbus_out_signature)
998
(types.FunctionType
999
(attribute.func_code,
1000
attribute.func_globals,
1001
attribute.func_name,
1002
attribute.func_defaults,
1003
attribute.func_closure)))
1004
# Is this a D-Bus property?
1005
elif getattr(attribute, "_dbus_is_property", False):
1006
# Create a new, but exactly alike, function
1007
# object, and decorate it to be a new D-Bus
1008
# property with the alternate D-Bus interface
1009
# name. Add it to the class.
1010
attr[attrname] = (dbus_service_property
1011
(alt_interface,
1012
attribute._dbus_signature,
1013
attribute._dbus_access,
1014
attribute
1015
._dbus_get_args_options
1016
["byte_arrays"])
1017
(types.FunctionType
1018
(attribute.func_code,
1019
attribute.func_globals,
1020
attribute.func_name,
1021
attribute.func_defaults,
1022
attribute.func_closure)))
1023
return type.__new__(mcs, name, bases, attr)
1024
1025
712
1026
class ClientDBus(Client, DBusObjectWithProperties):
713
1027
"""A Client class using D-Bus
714
1028
718
1032
"""
719
1033
720
1034
runtime_expansions = (Client.runtime_expansions
721
+ (u"dbus_object_path",))
1035
+ ("dbus_object_path",))
722
1036
723
1037
# dbus.service.Object doesn't use super(), so we can't either.
724
1038
725
1039
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
727
1040
self.bus = bus
728
1041
Client.__init__(self, *args, **kwargs)
1042
self._approvals_pending = 0
1043
1044
self._approvals_pending = 0
729
1045
# Only now, when this client is initialized, can it show up on
730
1046
# the D-Bus
731
1047
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
1048
{ord("."): ord("_"),
1049
ord("-"): ord("_")})
734
1050
self.dbus_object_path = (dbus.ObjectPath
735
(u"/clients/" + client_object_name))
1051
("/clients/" + client_object_name))
736
1052
DBusObjectWithProperties.__init__(self, self.bus,
737
1053
self.dbus_object_path)
738
1054
739
def _get_approvals_pending(self):
740
return self._approvals_pending
741
def _set_approvals_pending(self, value):
742
old_value = self._approvals_pending
743
self._approvals_pending = value
744
bval = bool(value)
745
if (hasattr(self, "dbus_object_path")
746
and bval is not bool(old_value)):
747
dbus_bool = dbus.Boolean(bval, variant_level=1)
748
self.PropertyChanged(dbus.String(u"ApprovalPending"),
749
dbus_bool)
750
751
approvals_pending = property(_get_approvals_pending,
752
_set_approvals_pending)
753
del _get_approvals_pending, _set_approvals_pending
754
755
@staticmethod
756
def _datetime_to_dbus(dt, variant_level=0):
757
"""Convert a UTC datetime.datetime() to a D-Bus type."""
758
return dbus.String(dt.isoformat(),
759
variant_level=variant_level)
760
761
def enable(self):
762
oldstate = getattr(self, u"enabled", False)
763
r = Client.enable(self)
764
if oldstate != self.enabled:
765
# Emit D-Bus signals
766
self.PropertyChanged(dbus.String(u"Enabled"),
767
dbus.Boolean(True, variant_level=1))
768
self.PropertyChanged(
769
dbus.String(u"LastEnabled"),
770
self._datetime_to_dbus(self.last_enabled,
771
variant_level=1))
772
return r
773
774
def disable(self, quiet = False):
775
oldstate = getattr(self, u"enabled", False)
776
r = Client.disable(self, quiet=quiet)
777
if not quiet and oldstate != self.enabled:
778
# Emit D-Bus signal
779
self.PropertyChanged(dbus.String(u"Enabled"),
780
dbus.Boolean(False, variant_level=1))
781
return r
1055
def notifychangeproperty(transform_func,
1056
dbus_name, type_func=lambda x: x,
1057
variant_level=1):
1058
""" Modify a variable so that it's a property which announces
1059
its changes to DBus.
1060
1061
transform_fun: Function that takes a value and a variant_level
1062
and transforms it to a D-Bus type.
1063
dbus_name: D-Bus name of the variable
1064
type_func: Function that transform the value before sending it
1065
to the D-Bus. Default: no transform
1066
variant_level: D-Bus variant level. Default: 1
1067
"""
1068
attrname = "_{0}".format(dbus_name)
1069
def setter(self, value):
1070
if hasattr(self, "dbus_object_path"):
1071
if (not hasattr(self, attrname) or
1072
type_func(getattr(self, attrname, None))
1073
!= type_func(value)):
1074
dbus_value = transform_func(type_func(value),
1075
variant_level
1076
=variant_level)
1077
self.PropertyChanged(dbus.String(dbus_name),
1078
dbus_value)
1079
setattr(self, attrname, value)
1080
1081
return property(lambda self: getattr(self, attrname), setter)
1082
1083
1084
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1085
approvals_pending = notifychangeproperty(dbus.Boolean,
1086
"ApprovalPending",
1087
type_func = bool)
1088
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1089
last_enabled = notifychangeproperty(datetime_to_dbus,
1090
"LastEnabled")
1091
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1092
type_func = lambda checker:
1093
checker is not None)
1094
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1095
"LastCheckedOK")
1096
last_approval_request = notifychangeproperty(
1097
datetime_to_dbus, "LastApprovalRequest")
1098
approved_by_default = notifychangeproperty(dbus.Boolean,
1099
"ApprovedByDefault")
1100
approval_delay = notifychangeproperty(dbus.UInt64,
1101
"ApprovalDelay",
1102
type_func =
1103
timedelta_to_milliseconds)
1104
approval_duration = notifychangeproperty(
1105
dbus.UInt64, "ApprovalDuration",
1106
type_func = timedelta_to_milliseconds)
1107
host = notifychangeproperty(dbus.String, "Host")
1108
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1109
type_func =
1110
timedelta_to_milliseconds)
1111
extended_timeout = notifychangeproperty(
1112
dbus.UInt64, "ExtendedTimeout",
1113
type_func = timedelta_to_milliseconds)
1114
interval = notifychangeproperty(dbus.UInt64,
1115
"Interval",
1116
type_func =
1117
timedelta_to_milliseconds)
1118
checker_command = notifychangeproperty(dbus.String, "Checker")
1119
1120
del notifychangeproperty
782
1121
783
1122
def __del__(self, *args, **kwargs):
784
1123
try:
785
1124
self.remove_from_connection()
786
1125
except LookupError:
787
1126
pass
788
if hasattr(DBusObjectWithProperties, u"__del__"):
1127
if hasattr(DBusObjectWithProperties, "__del__"):
789
1128
DBusObjectWithProperties.__del__(self, *args, **kwargs)
790
1129
Client.__del__(self, *args, **kwargs)
791
1130
793
1132
*args, **kwargs):
794
1133
self.checker_callback_tag = None
795
1134
self.checker = None
796
# Emit D-Bus signal
797
self.PropertyChanged(dbus.String(u"CheckerRunning"),
798
dbus.Boolean(False, variant_level=1))
799
1135
if os.WIFEXITED(condition):
800
1136
exitstatus = os.WEXITSTATUS(condition)
801
1137
# Emit D-Bus signal
811
1147
return Client.checker_callback(self, pid, condition, command,
812
1148
*args, **kwargs)
813
1149
814
def checked_ok(self, *args, **kwargs):
815
r = Client.checked_ok(self, *args, **kwargs)
816
# Emit D-Bus signal
817
self.PropertyChanged(
818
dbus.String(u"LastCheckedOK"),
819
(self._datetime_to_dbus(self.last_checked_ok,
820
variant_level=1)))
821
return r
822
823
def need_approval(self, *args, **kwargs):
824
r = Client.need_approval(self, *args, **kwargs)
825
# Emit D-Bus signal
826
self.PropertyChanged(
827
dbus.String(u"LastApprovalRequest"),
828
(self._datetime_to_dbus(self.last_approval_request,
829
variant_level=1)))
830
return r
831
832
1150
def start_checker(self, *args, **kwargs):
833
1151
old_checker = self.checker
834
1152
if self.checker is not None:
841
1159
and old_checker_pid != self.checker.pid):
842
1160
# Emit D-Bus signal
843
1161
self.CheckerStarted(self.current_checker_command)
844
self.PropertyChanged(
845
dbus.String(u"CheckerRunning"),
846
dbus.Boolean(True, variant_level=1))
847
1162
return r
848
1163
849
def stop_checker(self, *args, **kwargs):
850
old_checker = getattr(self, u"checker", None)
851
r = Client.stop_checker(self, *args, **kwargs)
852
if (old_checker is not None
853
and getattr(self, u"checker", None) is None):
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
855
dbus.Boolean(False, variant_level=1))
856
return r
857
858
1164
def _reset_approved(self):
859
self._approved = None
1165
self.approved = None
860
1166
return False
861
1167
862
1168
def approve(self, value=True):
863
1169
self.send_changedstate()
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
1170
self.approved = value
1171
gobject.timeout_add(timedelta_to_milliseconds
866
1172
(self.approval_duration),
867
1173
self._reset_approved)
868
1174
869
1175
870
1176
## D-Bus methods, signals & properties
871
_interface = u"se.bsnet.fukt.Mandos.Client"
1177
_interface = "se.recompile.Mandos.Client"
872
1178
873
1179
## Signals
874
1180
875
1181
# CheckerCompleted - signal
876
@dbus.service.signal(_interface, signature=u"nxs")
1182
@dbus.service.signal(_interface, signature="nxs")
877
1183
def CheckerCompleted(self, exitcode, waitstatus, command):
878
1184
"D-Bus signal"
879
1185
pass
880
1186
881
1187
# CheckerStarted - signal
882
@dbus.service.signal(_interface, signature=u"s")
1188
@dbus.service.signal(_interface, signature="s")
883
1189
def CheckerStarted(self, command):
884
1190
"D-Bus signal"
885
1191
pass
886
1192
887
1193
# PropertyChanged - signal
888
@dbus.service.signal(_interface, signature=u"sv")
1194
@dbus.service.signal(_interface, signature="sv")
889
1195
def PropertyChanged(self, property, value):
890
1196
"D-Bus signal"
891
1197
pass
900
1206
pass
901
1207
902
1208
# Rejected - signal
903
@dbus.service.signal(_interface, signature=u"s")
1209
@dbus.service.signal(_interface, signature="s")
904
1210
def Rejected(self, reason):
905
1211
"D-Bus signal"
906
1212
pass
907
1213
908
1214
# NeedApproval - signal
909
@dbus.service.signal(_interface, signature=u"tb")
1215
@dbus.service.signal(_interface, signature="tb")
910
1216
def NeedApproval(self, timeout, default):
911
1217
"D-Bus signal"
912
1218
return self.need_approval()
913
1219
1220
# NeRwequest - signal
1221
@dbus.service.signal(_interface, signature="s")
1222
def NewRequest(self, ip):
1223
"""D-Bus signal
1224
Is sent after a client request a password.
1225
"""
1226
pass
1227
914
1228
## Methods
915
1229
916
1230
# Approve - method
917
@dbus.service.method(_interface, in_signature=u"b")
1231
@dbus.service.method(_interface, in_signature="b")
918
1232
def Approve(self, value):
919
1233
self.approve(value)
920
1234
921
1235
# CheckedOK - method
922
1236
@dbus.service.method(_interface)
923
1237
def CheckedOK(self):
924
return self.checked_ok()
1238
self.checked_ok()
925
1239
926
1240
# Enable - method
927
1241
@dbus.service.method(_interface)
949
1263
## Properties
950
1264
951
1265
# ApprovalPending - property
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
1266
@dbus_service_property(_interface, signature="b", access="read")
953
1267
def ApprovalPending_dbus_property(self):
954
1268
return dbus.Boolean(bool(self.approvals_pending))
955
1269
956
1270
# ApprovedByDefault - property
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
1271
@dbus_service_property(_interface, signature="b",
1272
access="readwrite")
959
1273
def ApprovedByDefault_dbus_property(self, value=None):
960
1274
if value is None: # get
961
1275
return dbus.Boolean(self.approved_by_default)
962
1276
self.approved_by_default = bool(value)
963
# Emit D-Bus signal
964
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
dbus.Boolean(value, variant_level=1))
966
1277
967
1278
# ApprovalDelay - property
968
@dbus_service_property(_interface, signature=u"t",
969
access=u"readwrite")
1279
@dbus_service_property(_interface, signature="t",
1280
access="readwrite")
970
1281
def ApprovalDelay_dbus_property(self, value=None):
971
1282
if value is None: # get
972
1283
return dbus.UInt64(self.approval_delay_milliseconds())
973
1284
self.approval_delay = datetime.timedelta(0, 0, 0, value)
974
# Emit D-Bus signal
975
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
dbus.UInt64(value, variant_level=1))
977
1285
978
1286
# ApprovalDuration - property
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
1287
@dbus_service_property(_interface, signature="t",
1288
access="readwrite")
981
1289
def ApprovalDuration_dbus_property(self, value=None):
982
1290
if value is None: # get
983
return dbus.UInt64(self._timedelta_to_milliseconds(
1291
return dbus.UInt64(timedelta_to_milliseconds(
984
1292
self.approval_duration))
985
1293
self.approval_duration = datetime.timedelta(0, 0, 0, value)
986
# Emit D-Bus signal
987
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
dbus.UInt64(value, variant_level=1))
989
1294
990
1295
# Name - property
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
1296
@dbus_service_property(_interface, signature="s", access="read")
992
1297
def Name_dbus_property(self):
993
1298
return dbus.String(self.name)
994
1299
995
1300
# Fingerprint - property
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
1301
@dbus_service_property(_interface, signature="s", access="read")
997
1302
def Fingerprint_dbus_property(self):
998
1303
return dbus.String(self.fingerprint)
999
1304
1000
1305
# Host - property
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
1306
@dbus_service_property(_interface, signature="s",
1307
access="readwrite")
1003
1308
def Host_dbus_property(self, value=None):
1004
1309
if value is None: # get
1005
1310
return dbus.String(self.host)
1006
self.host = value
1007
# Emit D-Bus signal
1008
self.PropertyChanged(dbus.String(u"Host"),
1009
dbus.String(value, variant_level=1))
1311
self.host = unicode(value)
1010
1312
1011
1313
# Created - property
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
1314
@dbus_service_property(_interface, signature="s", access="read")
1013
1315
def Created_dbus_property(self):
1014
return dbus.String(self._datetime_to_dbus(self.created))
1316
return datetime_to_dbus(self.created)
1015
1317
1016
1318
# LastEnabled - property
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
1319
@dbus_service_property(_interface, signature="s", access="read")
1018
1320
def LastEnabled_dbus_property(self):
1019
if self.last_enabled is None:
1020
return dbus.String(u"")
1021
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1321
return datetime_to_dbus(self.last_enabled)
1022
1322
1023
1323
# Enabled - property
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
1324
@dbus_service_property(_interface, signature="b",
1325
access="readwrite")
1026
1326
def Enabled_dbus_property(self, value=None):
1027
1327
if value is None: # get
1028
1328
return dbus.Boolean(self.enabled)
1032
1332
self.disable()
1033
1333
1034
1334
# LastCheckedOK - property
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
1335
@dbus_service_property(_interface, signature="s",
1336
access="readwrite")
1037
1337
def LastCheckedOK_dbus_property(self, value=None):
1038
1338
if value is not None:
1039
1339
self.checked_ok()
1040
1340
return
1041
if self.last_checked_ok is None:
1042
return dbus.String(u"")
1043
return dbus.String(self._datetime_to_dbus(self
1044
.last_checked_ok))
1341
return datetime_to_dbus(self.last_checked_ok)
1342
1343
# Expires - property
1344
@dbus_service_property(_interface, signature="s", access="read")
1345
def Expires_dbus_property(self):
1346
return datetime_to_dbus(self.expires)
1045
1347
1046
1348
# LastApprovalRequest - property
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
1349
@dbus_service_property(_interface, signature="s", access="read")
1048
1350
def LastApprovalRequest_dbus_property(self):
1049
if self.last_approval_request is None:
1050
return dbus.String(u"")
1051
return dbus.String(self.
1052
_datetime_to_dbus(self
1053
.last_approval_request))
1351
return datetime_to_dbus(self.last_approval_request)
1054
1352
1055
1353
# Timeout - property
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
1354
@dbus_service_property(_interface, signature="t",
1355
access="readwrite")
1058
1356
def Timeout_dbus_property(self, value=None):
1059
1357
if value is None: # get
1060
1358
return dbus.UInt64(self.timeout_milliseconds())
1061
1359
self.timeout = datetime.timedelta(0, 0, 0, value)
1062
# Emit D-Bus signal
1063
self.PropertyChanged(dbus.String(u"Timeout"),
1064
dbus.UInt64(value, variant_level=1))
1065
if getattr(self, u"disable_initiator_tag", None) is None:
1360
if getattr(self, "disable_initiator_tag", None) is None:
1066
1361
return
1067
1362
# Reschedule timeout
1068
1363
gobject.source_remove(self.disable_initiator_tag)
1069
1364
self.disable_initiator_tag = None
1070
time_to_die = (self.
1071
_timedelta_to_milliseconds((self
1072
.last_checked_ok
1073
+ self.timeout)
1074
- datetime.datetime
1075
.utcnow()))
1365
self.expires = None
1366
time_to_die = timedelta_to_milliseconds((self
1367
.last_checked_ok
1368
+ self.timeout)
1369
- datetime.datetime
1370
.utcnow())
1076
1371
if time_to_die <= 0:
1077
1372
# The timeout has passed
1078
1373
self.disable()
1079
1374
else:
1375
self.expires = (datetime.datetime.utcnow()
1376
+ datetime.timedelta(milliseconds =
1377
time_to_die))
1080
1378
self.disable_initiator_tag = (gobject.timeout_add
1081
1379
(time_to_die, self.disable))
1082
1380
1381
# ExtendedTimeout - property
1382
@dbus_service_property(_interface, signature="t",
1383
access="readwrite")
1384
def ExtendedTimeout_dbus_property(self, value=None):
1385
if value is None: # get
1386
return dbus.UInt64(self.extended_timeout_milliseconds())
1387
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1388
1083
1389
# Interval - property
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
1390
@dbus_service_property(_interface, signature="t",
1391
access="readwrite")
1086
1392
def Interval_dbus_property(self, value=None):
1087
1393
if value is None: # get
1088
1394
return dbus.UInt64(self.interval_milliseconds())
1089
1395
self.interval = datetime.timedelta(0, 0, 0, value)
1090
# Emit D-Bus signal
1091
self.PropertyChanged(dbus.String(u"Interval"),
1092
dbus.UInt64(value, variant_level=1))
1093
if getattr(self, u"checker_initiator_tag", None) is None:
1396
if getattr(self, "checker_initiator_tag", None) is None:
1094
1397
return
1095
# Reschedule checker run
1096
gobject.source_remove(self.checker_initiator_tag)
1097
self.checker_initiator_tag = (gobject.timeout_add
1098
(value, self.start_checker))
1099
self.start_checker() # Start one now, too
1100
1398
if self.enabled:
1399
# Reschedule checker run
1400
gobject.source_remove(self.checker_initiator_tag)
1401
self.checker_initiator_tag = (gobject.timeout_add
1402
(value, self.start_checker))
1403
self.start_checker() # Start one now, too
1404
1101
1405
# Checker - property
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
1406
@dbus_service_property(_interface, signature="s",
1407
access="readwrite")
1104
1408
def Checker_dbus_property(self, value=None):
1105
1409
if value is None: # get
1106
1410
return dbus.String(self.checker_command)
1107
self.checker_command = value
1108
# Emit D-Bus signal
1109
self.PropertyChanged(dbus.String(u"Checker"),
1110
dbus.String(self.checker_command,
1111
variant_level=1))
1411
self.checker_command = unicode(value)
1112
1412
1113
1413
# CheckerRunning - property
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
1414
@dbus_service_property(_interface, signature="b",
1415
access="readwrite")
1116
1416
def CheckerRunning_dbus_property(self, value=None):
1117
1417
if value is None: # get
1118
1418
return dbus.Boolean(self.checker is not None)
1122
1422
self.stop_checker()
1123
1423
1124
1424
# ObjectPath - property
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
1425
@dbus_service_property(_interface, signature="o", access="read")
1126
1426
def ObjectPath_dbus_property(self):
1127
1427
return self.dbus_object_path # is already a dbus.ObjectPath
1128
1428
1129
1429
# Secret = property
1130
@dbus_service_property(_interface, signature=u"ay",
1131
access=u"write", byte_arrays=True)
1430
@dbus_service_property(_interface, signature="ay",
1431
access="write", byte_arrays=True)
1132
1432
def Secret_dbus_property(self, value):
1133
1433
self.secret = str(value)
1134
1434
1141
1441
self._pipe.send(('init', fpr, address))
1142
1442
if not self._pipe.recv():
1143
1443
raise KeyError()
1144
1444
1145
1445
def __getattribute__(self, name):
1146
if(name == '_pipe'):
1446
if name == '_pipe':
1147
1447
return super(ProxyClient, self).__getattribute__(name)
1148
1448
self._pipe.send(('getattr', name))
1149
1449
data = self._pipe.recv()
1154
1454
self._pipe.send(('funcall', name, args, kwargs))
1155
1455
return self._pipe.recv()[1]
1156
1456
return func
1157
1457
1158
1458
def __setattr__(self, name, value):
1159
if(name == '_pipe'):
1459
if name == '_pipe':
1160
1460
return super(ProxyClient, self).__setattr__(name, value)
1161
1461
self._pipe.send(('setattr', name, value))
1162
1462
1163
1463
1464
class ClientDBusTransitional(ClientDBus):
1465
__metaclass__ = AlternateDBusNamesMetaclass
1466
1467
1164
1468
class ClientHandler(socketserver.BaseRequestHandler, object):
1165
1469
"""A class to handle client connections.
1166
1470
1169
1473
1170
1474
def handle(self):
1171
1475
with contextlib.closing(self.server.child_pipe) as child_pipe:
1172
logger.info(u"TCP connection from: %s",
1476
logger.info("TCP connection from: %s",
1173
1477
unicode(self.client_address))
1174
logger.debug(u"Pipe FD: %d",
1478
logger.debug("Pipe FD: %d",
1175
1479
self.server.child_pipe.fileno())
1176
1480
1177
1481
session = (gnutls.connection
1178
1482
.ClientSession(self.request,
1179
1483
gnutls.connection
1180
1484
.X509Credentials()))
1181
1485
1182
1486
# Note: gnutls.connection.X509Credentials is really a
1183
1487
# generic GnuTLS certificate credentials object so long as
1184
1488
# no X.509 keys are added to it. Therefore, we can use it
1185
1489
# here despite using OpenPGP certificates.
1186
1187
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1188
# u"+AES-256-CBC", u"+SHA1",
1189
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1190
# u"+DHE-DSS"))
1490
1491
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1492
# "+AES-256-CBC", "+SHA1",
1493
# "+COMP-NULL", "+CTYPE-OPENPGP",
1494
# "+DHE-DSS"))
1191
1495
# Use a fallback default, since this MUST be set.
1192
1496
priority = self.server.gnutls_priority
1193
1497
if priority is None:
1194
priority = u"NORMAL"
1498
priority = "NORMAL"
1195
1499
(gnutls.library.functions
1196
1500
.gnutls_priority_set_direct(session._c_object,
1197
1501
priority, None))
1198
1502
1199
1503
# Start communication using the Mandos protocol
1200
1504
# Get protocol number
1201
1505
line = self.request.makefile().readline()
1202
logger.debug(u"Protocol version: %r", line)
1506
logger.debug("Protocol version: %r", line)
1203
1507
try:
1204
1508
if int(line.strip().split()[0]) > 1:
1205
1509
raise RuntimeError
1206
except (ValueError, IndexError, RuntimeError), error:
1207
logger.error(u"Unknown protocol version: %s", error)
1510
except (ValueError, IndexError, RuntimeError) as error:
1511
logger.error("Unknown protocol version: %s", error)
1208
1512
return
1209
1513
1210
1514
# Start GnuTLS connection
1211
1515
try:
1212
1516
session.handshake()
1213
except gnutls.errors.GNUTLSError, error:
1214
logger.warning(u"Handshake failed: %s", error)
1517
except gnutls.errors.GNUTLSError as error:
1518
logger.warning("Handshake failed: %s", error)
1215
1519
# Do not run session.bye() here: the session is not
1216
1520
# established. Just abandon the request.
1217
1521
return
1218
logger.debug(u"Handshake succeeded")
1219
1522
logger.debug("Handshake succeeded")
1523
1220
1524
approval_required = False
1221
1525
try:
1222
1526
try:
1223
1527
fpr = self.fingerprint(self.peer_certificate
1224
1528
(session))
1225
except (TypeError, gnutls.errors.GNUTLSError), error:
1226
logger.warning(u"Bad certificate: %s", error)
1529
except (TypeError,
1530
gnutls.errors.GNUTLSError) as error:
1531
logger.warning("Bad certificate: %s", error)
1227
1532
return
1228
logger.debug(u"Fingerprint: %s", fpr)
1229
1533
logger.debug("Fingerprint: %s", fpr)
1534
1230
1535
try:
1231
1536
client = ProxyClient(child_pipe, fpr,
1232
1537
self.client_address)
1233
1538
except KeyError:
1234
1539
return
1235
1540
1541
if self.server.use_dbus:
1542
# Emit D-Bus signal
1543
client.NewRequest(str(self.client_address))
1544
1236
1545
if client.approval_delay:
1237
1546
delay = client.approval_delay
1238
1547
client.approvals_pending += 1
1240
1549
1241
1550
while True:
1242
1551
if not client.enabled:
1243
logger.warning(u"Client %s is disabled",
1552
logger.info("Client %s is disabled",
1244
1553
client.name)
1245
1554
if self.server.use_dbus:
1246
1555
# Emit D-Bus signal
1247
client.Rejected("Disabled")
1556
client.Rejected("Disabled")
1248
1557
return
1249
1558
1250
if client._approved or not client.approval_delay:
1559
if client.approved or not client.approval_delay:
1251
1560
#We are approved or approval is disabled
1252
1561
break
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
1562
elif client.approved is None:
1563
logger.info("Client %s needs approval",
1255
1564
client.name)
1256
1565
if self.server.use_dbus:
1257
1566
# Emit D-Bus signal
1259
1568
client.approval_delay_milliseconds(),
1260
1569
client.approved_by_default)
1261
1570
else:
1262
logger.warning(u"Client %s was not approved",
1571
logger.warning("Client %s was not approved",
1263
1572
client.name)
1264
1573
if self.server.use_dbus:
1265
1574
# Emit D-Bus signal
1267
1576
return
1268
1577
1269
1578
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
1271
1579
time = datetime.datetime.now()
1272
1580
client.changedstate.acquire()
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1581
(client.changedstate.wait
1582
(float(client.timedelta_to_milliseconds(delay)
1583
/ 1000)))
1274
1584
client.changedstate.release()
1275
1585
time2 = datetime.datetime.now()
1276
1586
if (time2 - time) >= delay:
1291
1601
while sent_size < len(client.secret):
1292
1602
try:
1293
1603
sent = session.send(client.secret[sent_size:])
1294
except (gnutls.errors.GNUTLSError), error:
1604
except gnutls.errors.GNUTLSError as error:
1295
1605
logger.warning("gnutls send failed")
1296
1606
return
1297
logger.debug(u"Sent: %d, remaining: %d",
1607
logger.debug("Sent: %d, remaining: %d",
1298
1608
sent, len(client.secret)
1299
1609
- (sent_size + sent))
1300
1610
sent_size += sent
1301
1302
logger.info(u"Sending secret to %s", client.name)
1303
# bump the timeout as if seen
1304
client.checked_ok()
1611
1612
logger.info("Sending secret to %s", client.name)
1613
# bump the timeout using extended_timeout
1614
client.checked_ok(client.extended_timeout)
1305
1615
if self.server.use_dbus:
1306
1616
# Emit D-Bus signal
1307
1617
client.GotSecret()
1311
1621
client.approvals_pending -= 1
1312
1622
try:
1313
1623
session.bye()
1314
except (gnutls.errors.GNUTLSError), error:
1624
except gnutls.errors.GNUTLSError as error:
1315
1625
logger.warning("GnuTLS bye failed")
1316
1626
1317
1627
@staticmethod
1328
1638
.gnutls_certificate_get_peers
1329
1639
(session._c_object, ctypes.byref(list_size)))
1330
1640
if not bool(cert_list) and list_size.value != 0:
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
1641
raise gnutls.errors.GNUTLSError("error getting peer"
1642
" certificate")
1333
1643
if list_size.value == 0:
1334
1644
return None
1335
1645
cert = cert_list[0]
1361
1671
if crtverify.value != 0:
1362
1672
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1363
1673
raise (gnutls.errors.CertificateSecurityError
1364
(u"Verify failed"))
1674
("Verify failed"))
1365
1675
# New buffer for the fingerprint
1366
1676
buf = ctypes.create_string_buffer(20)
1367
1677
buf_len = ctypes.c_size_t()
1374
1684
# Convert the buffer to a Python bytestring
1375
1685
fpr = ctypes.string_at(buf, buf_len.value)
1376
1686
# Convert the bytestring to hexadecimal notation
1377
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1687
hex_fpr = binascii.hexlify(fpr).upper()
1378
1688
return hex_fpr
1379
1689
1380
1690
1383
1693
def sub_process_main(self, request, address):
1384
1694
try:
1385
1695
self.finish_request(request, address)
1386
except:
1696
except Exception:
1387
1697
self.handle_error(request, address)
1388
1698
self.close_request(request)
1389
1699
1390
1700
def process_request(self, request, address):
1391
1701
"""Start a new process to process the request."""
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
1702
proc = multiprocessing.Process(target = self.sub_process_main,
1703
args = (request,
1704
address))
1705
proc.start()
1706
return proc
1707
1394
1708
1395
1709
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1396
1710
""" adds a pipe to the MixIn """
1400
1714
This function creates a new pipe in self.pipe
1401
1715
"""
1402
1716
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1403
1404
super(MultiprocessingMixInWithPipe,
1405
self).process_request(request, client_address)
1717
1718
proc = MultiprocessingMixIn.process_request(self, request,
1719
client_address)
1406
1720
self.child_pipe.close()
1407
self.add_pipe(parent_pipe)
1408
1409
def add_pipe(self, parent_pipe):
1721
self.add_pipe(parent_pipe, proc)
1722
1723
def add_pipe(self, parent_pipe, proc):
1410
1724
"""Dummy function; override as necessary"""
1411
pass
1725
raise NotImplementedError
1726
1412
1727
1413
1728
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1414
1729
socketserver.TCPServer, object):
1432
1747
bind to an address or port if they were not specified."""
1433
1748
if self.interface is not None:
1434
1749
if SO_BINDTODEVICE is None:
1435
logger.error(u"SO_BINDTODEVICE does not exist;"
1436
u" cannot bind to interface %s",
1750
logger.error("SO_BINDTODEVICE does not exist;"
1751
" cannot bind to interface %s",
1437
1752
self.interface)
1438
1753
else:
1439
1754
try:
1440
1755
self.socket.setsockopt(socket.SOL_SOCKET,
1441
1756
SO_BINDTODEVICE,
1442
1757
str(self.interface
1443
+ u'\0'))
1444
except socket.error, error:
1758
+ '\0'))
1759
except socket.error as error:
1445
1760
if error[0] == errno.EPERM:
1446
logger.error(u"No permission to"
1447
u" bind to interface %s",
1761
logger.error("No permission to"
1762
" bind to interface %s",
1448
1763
self.interface)
1449
1764
elif error[0] == errno.ENOPROTOOPT:
1450
logger.error(u"SO_BINDTODEVICE not available;"
1451
u" cannot bind to interface %s",
1765
logger.error("SO_BINDTODEVICE not available;"
1766
" cannot bind to interface %s",
1452
1767
self.interface)
1453
1768
else:
1454
1769
raise
1456
1771
if self.server_address[0] or self.server_address[1]:
1457
1772
if not self.server_address[0]:
1458
1773
if self.address_family == socket.AF_INET6:
1459
any_address = u"::" # in6addr_any
1774
any_address = "::" # in6addr_any
1460
1775
else:
1461
1776
any_address = socket.INADDR_ANY
1462
1777
self.server_address = (any_address,
1489
1804
self.enabled = False
1490
1805
self.clients = clients
1491
1806
if self.clients is None:
1492
self.clients = set()
1807
self.clients = {}
1493
1808
self.use_dbus = use_dbus
1494
1809
self.gnutls_priority = gnutls_priority
1495
1810
IPv6_TCPServer.__init__(self, server_address,
1499
1814
def server_activate(self):
1500
1815
if self.enabled:
1501
1816
return socketserver.TCPServer.server_activate(self)
1817
1502
1818
def enable(self):
1503
1819
self.enabled = True
1504
def add_pipe(self, parent_pipe):
1820
1821
def add_pipe(self, parent_pipe, proc):
1505
1822
# Call "handle_ipc" for both data and EOF events
1506
1823
gobject.io_add_watch(parent_pipe.fileno(),
1507
1824
gobject.IO_IN | gobject.IO_HUP,
1508
1825
functools.partial(self.handle_ipc,
1509
parent_pipe = parent_pipe))
1510
1826
parent_pipe =
1827
parent_pipe,
1828
proc = proc))
1829
1511
1830
def handle_ipc(self, source, condition, parent_pipe=None,
1512
client_object=None):
1831
proc = None, client_object=None):
1513
1832
condition_names = {
1514
gobject.IO_IN: u"IN", # There is data to read.
1515
gobject.IO_OUT: u"OUT", # Data can be written (without
1833
gobject.IO_IN: "IN", # There is data to read.
1834
gobject.IO_OUT: "OUT", # Data can be written (without
1516
1835
# blocking).
1517
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1518
gobject.IO_ERR: u"ERR", # Error condition.
1519
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1836
gobject.IO_PRI: "PRI", # There is urgent data to read.
1837
gobject.IO_ERR: "ERR", # Error condition.
1838
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1520
1839
# broken, usually for pipes and
1521
1840
# sockets).
1522
1841
}
1524
1843
for cond, name in
1525
1844
condition_names.iteritems()
1526
1845
if cond & condition)
1527
# error or the other end of multiprocessing.Pipe has closed
1846
# error, or the other end of multiprocessing.Pipe has closed
1528
1847
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1848
# Wait for other process to exit
1849
proc.join()
1529
1850
return False
1530
1851
1531
1852
# Read a request from the child
1536
1857
fpr = request[1]
1537
1858
address = request[2]
1538
1859
1539
for c in self.clients:
1860
for c in self.clients.itervalues():
1540
1861
if c.fingerprint == fpr:
1541
1862
client = c
1542
1863
break
1543
1864
else:
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
1865
logger.info("Client not found for fingerprint: %s, ad"
1866
"dress: %s", fpr, address)
1546
1867
if self.use_dbus:
1547
1868
# Emit D-Bus signal
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
1869
mandos_dbus_service.ClientNotFound(fpr,
1870
address[0])
1549
1871
parent_pipe.send(False)
1550
1872
return False
1551
1873
1552
1874
gobject.io_add_watch(parent_pipe.fileno(),
1553
1875
gobject.IO_IN | gobject.IO_HUP,
1554
1876
functools.partial(self.handle_ipc,
1555
parent_pipe = parent_pipe,
1556
client_object = client))
1877
parent_pipe =
1878
parent_pipe,
1879
proc = proc,
1880
client_object =
1881
client))
1557
1882
parent_pipe.send(True)
1558
# remove the old hook in favor of the new above hook on same fileno
1883
# remove the old hook in favor of the new above hook on
1884
# same fileno
1559
1885
return False
1560
1886
if command == 'funcall':
1561
1887
funcname = request[1]
1562
1888
args = request[2]
1563
1889
kwargs = request[3]
1564
1890
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1566
1891
parent_pipe.send(('data', getattr(client_object,
1892
funcname)(*args,
1893
**kwargs)))
1894
1567
1895
if command == 'getattr':
1568
1896
attrname = request[1]
1569
1897
if callable(client_object.__getattribute__(attrname)):
1570
1898
parent_pipe.send(('function',))
1571
1899
else:
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1900
parent_pipe.send(('data', client_object
1901
.__getattribute__(attrname)))
1573
1902
1574
1903
if command == 'setattr':
1575
1904
attrname = request[1]
1576
1905
value = request[2]
1577
1906
setattr(client_object, attrname, value)
1578
1907
1579
1908
return True
1580
1909
1581
1910
1582
1911
def string_to_delta(interval):
1583
1912
"""Parse a string and return a datetime.timedelta
1584
1913
1585
>>> string_to_delta(u'7d')
1914
>>> string_to_delta('7d')
1586
1915
datetime.timedelta(7)
1587
>>> string_to_delta(u'60s')
1916
>>> string_to_delta('60s')
1588
1917
datetime.timedelta(0, 60)
1589
>>> string_to_delta(u'60m')
1918
>>> string_to_delta('60m')
1590
1919
datetime.timedelta(0, 3600)
1591
>>> string_to_delta(u'24h')
1920
>>> string_to_delta('24h')
1592
1921
datetime.timedelta(1)
1593
>>> string_to_delta(u'1w')
1922
>>> string_to_delta('1w')
1594
1923
datetime.timedelta(7)
1595
>>> string_to_delta(u'5m 30s')
1924
>>> string_to_delta('5m 30s')
1596
1925
datetime.timedelta(0, 330)
1597
1926
"""
1598
1927
timevalue = datetime.timedelta(0)
1600
1929
try:
1601
1930
suffix = unicode(s[-1])
1602
1931
value = int(s[:-1])
1603
if suffix == u"d":
1932
if suffix == "d":
1604
1933
delta = datetime.timedelta(value)
1605
elif suffix == u"s":
1934
elif suffix == "s":
1606
1935
delta = datetime.timedelta(0, value)
1607
elif suffix == u"m":
1936
elif suffix == "m":
1608
1937
delta = datetime.timedelta(0, 0, 0, 0, value)
1609
elif suffix == u"h":
1938
elif suffix == "h":
1610
1939
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1611
elif suffix == u"w":
1940
elif suffix == "w":
1612
1941
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1613
1942
else:
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
1943
raise ValueError("Unknown suffix %r" % suffix)
1944
except (ValueError, IndexError) as e:
1945
raise ValueError(*(e.args))
1617
1946
timevalue += delta
1618
1947
return timevalue
1619
1948
1620
1949
1621
def if_nametoindex(interface):
1622
"""Call the C function if_nametoindex(), or equivalent
1623
1624
Note: This function cannot accept a unicode string."""
1625
global if_nametoindex
1626
try:
1627
if_nametoindex = (ctypes.cdll.LoadLibrary
1628
(ctypes.util.find_library(u"c"))
1629
.if_nametoindex)
1630
except (OSError, AttributeError):
1631
logger.warning(u"Doing if_nametoindex the hard way")
1632
def if_nametoindex(interface):
1633
"Get an interface index the hard way, i.e. using fcntl()"
1634
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1635
with contextlib.closing(socket.socket()) as s:
1636
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1637
struct.pack(str(u"16s16x"),
1638
interface))
1639
interface_index = struct.unpack(str(u"I"),
1640
ifreq[16:20])[0]
1641
return interface_index
1642
return if_nametoindex(interface)
1643
1644
1645
1950
def daemon(nochdir = False, noclose = False):
1646
1951
"""See daemon(3). Standard BSD Unix function.
1647
1952
1650
1955
sys.exit()
1651
1956
os.setsid()
1652
1957
if not nochdir:
1653
os.chdir(u"/")
1958
os.chdir("/")
1654
1959
if os.fork():
1655
1960
sys.exit()
1656
1961
if not noclose:
1658
1963
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1659
1964
if not stat.S_ISCHR(os.fstat(null).st_mode):
1660
1965
raise OSError(errno.ENODEV,
1661
u"%s not a character device"
1966
"%s not a character device"
1662
1967
% os.path.devnull)
1663
1968
os.dup2(null, sys.stdin.fileno())
1664
1969
os.dup2(null, sys.stdout.fileno())
1672
1977
##################################################################
1673
1978
# Parsing of options, both command line and config file
1674
1979
1675
parser = optparse.OptionParser(version = "%%prog %s" % version)
1676
parser.add_option("-i", u"--interface", type=u"string",
1677
metavar="IF", help=u"Bind to interface IF")
1678
parser.add_option("-a", u"--address", type=u"string",
1679
help=u"Address to listen for requests on")
1680
parser.add_option("-p", u"--port", type=u"int",
1681
help=u"Port number to receive requests on")
1682
parser.add_option("--check", action=u"store_true",
1683
help=u"Run self-test")
1684
parser.add_option("--debug", action=u"store_true",
1685
help=u"Debug mode; run in foreground and log to"
1686
u" terminal")
1687
parser.add_option("--debuglevel", type=u"string", metavar="LEVEL",
1688
help=u"Debug level for stdout output")
1689
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1690
u" priority string (see GnuTLS documentation)")
1691
parser.add_option("--servicename", type=u"string",
1692
metavar=u"NAME", help=u"Zeroconf service name")
1693
parser.add_option("--configdir", type=u"string",
1694
default=u"/etc/mandos", metavar=u"DIR",
1695
help=u"Directory to search for configuration"
1696
u" files")
1697
parser.add_option("--no-dbus", action=u"store_false",
1698
dest=u"use_dbus", help=u"Do not provide D-Bus"
1699
u" system bus interface")
1700
parser.add_option("--no-ipv6", action=u"store_false",
1701
dest=u"use_ipv6", help=u"Do not use IPv6")
1702
options = parser.parse_args()[0]
1980
parser = argparse.ArgumentParser()
1981
parser.add_argument("-v", "--version", action="version",
1982
version = "%%(prog)s %s" % version,
1983
help="show version number and exit")
1984
parser.add_argument("-i", "--interface", metavar="IF",
1985
help="Bind to interface IF")
1986
parser.add_argument("-a", "--address",
1987
help="Address to listen for requests on")
1988
parser.add_argument("-p", "--port", type=int,
1989
help="Port number to receive requests on")
1990
parser.add_argument("--check", action="store_true",
1991
help="Run self-test")
1992
parser.add_argument("--debug", action="store_true",
1993
help="Debug mode; run in foreground and log"
1994
" to terminal")
1995
parser.add_argument("--debuglevel", metavar="LEVEL",
1996
help="Debug level for stdout output")
1997
parser.add_argument("--priority", help="GnuTLS"
1998
" priority string (see GnuTLS documentation)")
1999
parser.add_argument("--servicename",
2000
metavar="NAME", help="Zeroconf service name")
2001
parser.add_argument("--configdir",
2002
default="/etc/mandos", metavar="DIR",
2003
help="Directory to search for configuration"
2004
" files")
2005
parser.add_argument("--no-dbus", action="store_false",
2006
dest="use_dbus", help="Do not provide D-Bus"
2007
" system bus interface")
2008
parser.add_argument("--no-ipv6", action="store_false",
2009
dest="use_ipv6", help="Do not use IPv6")
2010
parser.add_argument("--no-restore", action="store_false",
2011
dest="restore", help="Do not restore stored"
2012
" state")
2013
parser.add_argument("--statedir", metavar="DIR",
2014
help="Directory to save/restore state in")
2015
2016
options = parser.parse_args()
1703
2017
1704
2018
if options.check:
1705
2019
import doctest
1707
2021
sys.exit()
1708
2022
1709
2023
# Default values for config file for server-global settings
1710
server_defaults = { u"interface": u"",
1711
u"address": u"",
1712
u"port": u"",
1713
u"debug": u"False",
1714
u"priority":
1715
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1716
u"servicename": u"Mandos",
1717
u"use_dbus": u"True",
1718
u"use_ipv6": u"True",
1719
u"debuglevel": u"",
2024
server_defaults = { "interface": "",
2025
"address": "",
2026
"port": "",
2027
"debug": "False",
2028
"priority":
2029
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2030
"servicename": "Mandos",
2031
"use_dbus": "True",
2032
"use_ipv6": "True",
2033
"debuglevel": "",
2034
"restore": "True",
2035
"statedir": "/var/lib/mandos"
1720
2036
}
1721
2037
1722
2038
# Parse config file for server-global settings
1723
2039
server_config = configparser.SafeConfigParser(server_defaults)
1724
2040
del server_defaults
1725
2041
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
2042
"mandos.conf"))
1727
2043
# Convert the SafeConfigParser object to a dict
1728
2044
server_settings = server_config.defaults()
1729
2045
# Use the appropriate methods on the non-string config options
1730
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1731
server_settings[option] = server_config.getboolean(u"DEFAULT",
2046
for option in ("debug", "use_dbus", "use_ipv6"):
2047
server_settings[option] = server_config.getboolean("DEFAULT",
1732
2048
option)
1733
2049
if server_settings["port"]:
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
2050
server_settings["port"] = server_config.getint("DEFAULT",
2051
"port")
1736
2052
del server_config
1737
2053
1738
2054
# Override the settings from the config file with command line
1739
2055
# options, if set.
1740
for option in (u"interface", u"address", u"port", u"debug",
1741
u"priority", u"servicename", u"configdir",
1742
u"use_dbus", u"use_ipv6", u"debuglevel"):
2056
for option in ("interface", "address", "port", "debug",
2057
"priority", "servicename", "configdir",
2058
"use_dbus", "use_ipv6", "debuglevel", "restore",
2059
"statedir"):
1743
2060
value = getattr(options, option)
1744
2061
if value is not None:
1745
2062
server_settings[option] = value
1753
2070
##################################################################
1754
2071
1755
2072
# For convenience
1756
debug = server_settings[u"debug"]
1757
debuglevel = server_settings[u"debuglevel"]
1758
use_dbus = server_settings[u"use_dbus"]
1759
use_ipv6 = server_settings[u"use_ipv6"]
1760
1761
if server_settings[u"servicename"] != u"Mandos":
2073
debug = server_settings["debug"]
2074
debuglevel = server_settings["debuglevel"]
2075
use_dbus = server_settings["use_dbus"]
2076
use_ipv6 = server_settings["use_ipv6"]
2077
stored_state_path = os.path.join(server_settings["statedir"],
2078
stored_state_file)
2079
2080
if debug:
2081
initlogger(logging.DEBUG)
2082
else:
2083
if not debuglevel:
2084
initlogger()
2085
else:
2086
level = getattr(logging, debuglevel.upper())
2087
initlogger(level)
2088
2089
if server_settings["servicename"] != "Mandos":
1762
2090
syslogger.setFormatter(logging.Formatter
1763
(u'Mandos (%s) [%%(process)d]:'
1764
u' %%(levelname)s: %%(message)s'
1765
% server_settings[u"servicename"]))
2091
('Mandos (%s) [%%(process)d]:'
2092
' %%(levelname)s: %%(message)s'
2093
% server_settings["servicename"]))
1766
2094
1767
2095
# Parse config file with clients
1768
client_defaults = { u"timeout": u"1h",
1769
u"interval": u"5m",
1770
u"checker": u"fping -q -- %%(host)s",
1771
u"host": u"",
1772
u"approval_delay": u"0s",
1773
u"approval_duration": u"1s",
1774
}
1775
client_config = configparser.SafeConfigParser(client_defaults)
1776
client_config.read(os.path.join(server_settings[u"configdir"],
1777
u"clients.conf"))
2096
client_config = configparser.SafeConfigParser(Client.client_defaults)
2097
client_config.read(os.path.join(server_settings["configdir"],
2098
"clients.conf"))
1778
2099
1779
2100
global mandos_dbus_service
1780
2101
mandos_dbus_service = None
1781
2102
1782
tcp_server = MandosServer((server_settings[u"address"],
1783
server_settings[u"port"]),
2103
tcp_server = MandosServer((server_settings["address"],
2104
server_settings["port"]),
1784
2105
ClientHandler,
1785
interface=(server_settings[u"interface"]
2106
interface=(server_settings["interface"]
1786
2107
or None),
1787
2108
use_ipv6=use_ipv6,
1788
2109
gnutls_priority=
1789
server_settings[u"priority"],
2110
server_settings["priority"],
1790
2111
use_dbus=use_dbus)
1791
2112
if not debug:
1792
pidfilename = u"/var/run/mandos.pid"
2113
pidfilename = "/var/run/mandos.pid"
1793
2114
try:
1794
pidfile = open(pidfilename, u"w")
2115
pidfile = open(pidfilename, "w")
1795
2116
except IOError:
1796
logger.error(u"Could not open file %r", pidfilename)
2117
logger.error("Could not open file %r", pidfilename)
1797
2118
1798
2119
try:
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
2120
uid = pwd.getpwnam("_mandos").pw_uid
2121
gid = pwd.getpwnam("_mandos").pw_gid
1801
2122
except KeyError:
1802
2123
try:
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
2124
uid = pwd.getpwnam("mandos").pw_uid
2125
gid = pwd.getpwnam("mandos").pw_gid
1805
2126
except KeyError:
1806
2127
try:
1807
uid = pwd.getpwnam(u"nobody").pw_uid
1808
gid = pwd.getpwnam(u"nobody").pw_gid
2128
uid = pwd.getpwnam("nobody").pw_uid
2129
gid = pwd.getpwnam("nobody").pw_gid
1809
2130
except KeyError:
1810
2131
uid = 65534
1811
2132
gid = 65534
1812
2133
try:
1813
2134
os.setgid(gid)
1814
2135
os.setuid(uid)
1815
except OSError, error:
2136
except OSError as error:
1816
2137
if error[0] != errno.EPERM:
1817
2138
raise error
1818
2139
1819
if not debug and not debuglevel:
1820
syslogger.setLevel(logging.WARNING)
1821
console.setLevel(logging.WARNING)
1822
if debuglevel:
1823
level = getattr(logging, debuglevel.upper())
1824
syslogger.setLevel(level)
1825
console.setLevel(level)
1826
1827
2140
if debug:
1828
2141
# Enable all possible GnuTLS debugging
1829
2142
1833
2146
1834
2147
@gnutls.library.types.gnutls_log_func
1835
2148
def debug_gnutls(level, string):
1836
logger.debug(u"GnuTLS: %s", string[:-1])
2149
logger.debug("GnuTLS: %s", string[:-1])
1837
2150
1838
2151
(gnutls.library.functions
1839
2152
.gnutls_global_set_log_function(debug_gnutls))
1847
2160
# No console logging
1848
2161
logger.removeHandler(console)
1849
2162
2163
# Need to fork before connecting to D-Bus
2164
if not debug:
2165
# Close all input and output, do double fork, etc.
2166
daemon()
1850
2167
1851
2168
global main_loop
1852
2169
# From the Avahi example code
1856
2173
# End of Avahi example code
1857
2174
if use_dbus:
1858
2175
try:
1859
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2176
bus_name = dbus.service.BusName("se.recompile.Mandos",
1860
2177
bus, do_not_queue=True)
1861
except dbus.exceptions.NameExistsException, e:
1862
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")
1863
2183
use_dbus = False
1864
server_settings[u"use_dbus"] = False
2184
server_settings["use_dbus"] = False
1865
2185
tcp_server.use_dbus = False
1866
2186
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1867
service = AvahiService(name = server_settings[u"servicename"],
1868
servicetype = u"_mandos._tcp",
1869
protocol = protocol, bus = bus)
2187
service = AvahiServiceToSyslog(name =
2188
server_settings["servicename"],
2189
servicetype = "_mandos._tcp",
2190
protocol = protocol, bus = bus)
1870
2191
if server_settings["interface"]:
1871
2192
service.interface = (if_nametoindex
1872
(str(server_settings[u"interface"])))
1873
1874
if not debug:
1875
# Close all input and output, do double fork, etc.
1876
daemon()
1877
2193
(str(server_settings["interface"])))
2194
1878
2195
global multiprocessing_manager
1879
2196
multiprocessing_manager = multiprocessing.Manager()
1880
2197
1881
2198
client_class = Client
1882
2199
if use_dbus:
1883
client_class = functools.partial(ClientDBus, bus = bus)
1884
def client_config_items(config, section):
1885
special_settings = {
1886
"approved_by_default":
1887
lambda: config.getboolean(section,
1888
"approved_by_default"),
1889
}
1890
for name, value in config.items(section):
2200
client_class = functools.partial(ClientDBusTransitional,
2201
bus = bus)
2202
2203
client_settings = Client.config_parser(client_config)
2204
old_client_settings = {}
2205
clients_data = {}
2206
2207
# Get client data and settings from last running state.
2208
if server_settings["restore"]:
2209
try:
2210
with open(stored_state_path, "rb") as stored_state:
2211
clients_data, old_client_settings = (pickle.load
2212
(stored_state))
2213
os.remove(stored_state_path)
2214
except IOError as e:
2215
logger.warning("Could not load persistent state: {0}"
2216
.format(e))
2217
if e.errno != errno.ENOENT:
2218
raise
2219
2220
with PGPEngine() as pgp:
2221
for client_name, client in clients_data.iteritems():
2222
# Decide which value to use after restoring saved state.
2223
# We have three different values: Old config file,
2224
# new config file, and saved state.
2225
# New config value takes precedence if it differs from old
2226
# config value, otherwise use saved state.
2227
for name, value in client_settings[client_name].items():
2228
try:
2229
# For each value in new config, check if it
2230
# differs from the old config value (Except for
2231
# the "secret" attribute)
2232
if (name != "secret" and
2233
value != old_client_settings[client_name]
2234
[name]):
2235
client[name] = value
2236
except KeyError:
2237
pass
2238
2239
# Clients who has passed its expire date can still be
2240
# enabled if its last checker was successful. Clients
2241
# whose checker failed before we stored its state is
2242
# assumed to have failed all checkers during downtime.
2243
if client["enabled"]:
2244
if datetime.datetime.utcnow() >= client["expires"]:
2245
if not client["last_checked_ok"]:
2246
logger.warning(
2247
"disabling client {0} - Client never "
2248
"performed a successfull checker"
2249
.format(client["name"]))
2250
client["enabled"] = False
2251
elif client["last_checker_status"] != 0:
2252
logger.warning(
2253
"disabling client {0} - Client "
2254
"last checker failed with error code {1}"
2255
.format(client["name"],
2256
client["last_checker_status"]))
2257
client["enabled"] = False
2258
else:
2259
client["expires"] = (datetime.datetime
2260
.utcnow()
2261
+ client["timeout"])
2262
1891
2263
try:
1892
yield (name, special_settings[name]())
1893
except KeyError:
1894
yield (name, value)
1895
1896
tcp_server.clients.update(set(
1897
client_class(name = section,
1898
config= dict(client_config_items(
1899
client_config, section)))
1900
for section in client_config.sections()))
2264
client["secret"] = (
2265
pgp.decrypt(client["encrypted_secret"],
2266
client_settings[client_name]
2267
["secret"]))
2268
except PGPError:
2269
# If decryption fails, we use secret from new settings
2270
logger.debug("Failed to decrypt {0} old secret"
2271
.format(client_name))
2272
client["secret"] = (
2273
client_settings[client_name]["secret"])
2274
2275
2276
# Add/remove clients based on new changes made to config
2277
for client_name in set(old_client_settings) - set(client_settings):
2278
del clients_data[client_name]
2279
for client_name in set(client_settings) - set(old_client_settings):
2280
clients_data[client_name] = client_settings[client_name]
2281
2282
# Create clients all clients
2283
for client_name, client in clients_data.iteritems():
2284
tcp_server.clients[client_name] = client_class(
2285
name = client_name, settings = client)
2286
1901
2287
if not tcp_server.clients:
1902
logger.warning(u"No clients defined")
2288
logger.warning("No clients defined")
1903
2289
1904
2290
if not debug:
1905
2291
try:
1906
2292
with pidfile:
1907
2293
pid = os.getpid()
1908
pidfile.write(str(pid) + "\n")
2294
pidfile.write(str(pid) + "\n".encode("utf-8"))
1909
2295
del pidfile
1910
2296
except IOError:
1911
logger.error(u"Could not write to file %r with PID %d",
2297
logger.error("Could not write to file %r with PID %d",
1912
2298
pidfilename, pid)
1913
2299
except NameError:
1914
2300
# "pidfile" was never created
1915
2301
pass
1916
2302
del pidfilename
1917
1918
2303
signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
2304
1920
2305
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1921
2306
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1922
2307
1924
2309
class MandosDBusService(dbus.service.Object):
1925
2310
"""A D-Bus proxy object"""
1926
2311
def __init__(self):
1927
dbus.service.Object.__init__(self, bus, u"/")
1928
_interface = u"se.bsnet.fukt.Mandos"
2312
dbus.service.Object.__init__(self, bus, "/")
2313
_interface = "se.recompile.Mandos"
1929
2314
1930
@dbus.service.signal(_interface, signature=u"o")
2315
@dbus.service.signal(_interface, signature="o")
1931
2316
def ClientAdded(self, objpath):
1932
2317
"D-Bus signal"
1933
2318
pass
1934
2319
1935
@dbus.service.signal(_interface, signature=u"ss")
2320
@dbus.service.signal(_interface, signature="ss")
1936
2321
def ClientNotFound(self, fingerprint, address):
1937
2322
"D-Bus signal"
1938
2323
pass
1939
2324
1940
@dbus.service.signal(_interface, signature=u"os")
2325
@dbus.service.signal(_interface, signature="os")
1941
2326
def ClientRemoved(self, objpath, name):
1942
2327
"D-Bus signal"
1943
2328
pass
1944
2329
1945
@dbus.service.method(_interface, out_signature=u"ao")
2330
@dbus.service.method(_interface, out_signature="ao")
1946
2331
def GetAllClients(self):
1947
2332
"D-Bus method"
1948
2333
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
2334
for c in
2335
tcp_server.clients.itervalues())
1950
2336
1951
2337
@dbus.service.method(_interface,
1952
out_signature=u"a{oa{sv}}")
2338
out_signature="a{oa{sv}}")
1953
2339
def GetAllClientsWithProperties(self):
1954
2340
"D-Bus method"
1955
2341
return dbus.Dictionary(
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
2342
((c.dbus_object_path, c.GetAll(""))
2343
for c in tcp_server.clients.itervalues()),
2344
signature="oa{sv}")
1959
2345
1960
@dbus.service.method(_interface, in_signature=u"o")
2346
@dbus.service.method(_interface, in_signature="o")
1961
2347
def RemoveClient(self, object_path):
1962
2348
"D-Bus method"
1963
for c in tcp_server.clients:
2349
for c in tcp_server.clients.itervalues():
1964
2350
if c.dbus_object_path == object_path:
1965
tcp_server.clients.remove(c)
2351
del tcp_server.clients[c.name]
1966
2352
c.remove_from_connection()
1967
2353
# Don't signal anything except ClientRemoved
1968
2354
c.disable(quiet=True)
1973
2359
1974
2360
del _interface
1975
2361
1976
mandos_dbus_service = MandosDBusService()
2362
class MandosDBusServiceTransitional(MandosDBusService):
2363
__metaclass__ = AlternateDBusNamesMetaclass
2364
mandos_dbus_service = MandosDBusServiceTransitional()
1977
2365
1978
2366
def cleanup():
1979
2367
"Cleanup function; run on exit"
1980
2368
service.cleanup()
1981
2369
2370
multiprocessing.active_children()
2371
if not (tcp_server.clients or client_settings):
2372
return
2373
2374
# Store client before exiting. Secrets are encrypted with key
2375
# based on what config file has. If config file is
2376
# removed/edited, old secret will thus be unrecovable.
2377
clients = {}
2378
with PGPEngine() as pgp:
2379
for client in tcp_server.clients.itervalues():
2380
key = client_settings[client.name]["secret"]
2381
client.encrypted_secret = pgp.encrypt(client.secret,
2382
key)
2383
client_dict = {}
2384
2385
# A list of attributes that can not be pickled
2386
# + secret.
2387
exclude = set(("bus", "changedstate", "secret",
2388
"checker"))
2389
for name, typ in (inspect.getmembers
2390
(dbus.service.Object)):
2391
exclude.add(name)
2392
2393
client_dict["encrypted_secret"] = (client
2394
.encrypted_secret)
2395
for attr in client.client_structure:
2396
if attr not in exclude:
2397
client_dict[attr] = getattr(client, attr)
2398
2399
clients[client.name] = client_dict
2400
del client_settings[client.name]["secret"]
2401
2402
try:
2403
with os.fdopen(os.open(stored_state_path,
2404
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2405
0600), "wb") as stored_state:
2406
pickle.dump((clients, client_settings), stored_state)
2407
except (IOError, OSError) as e:
2408
logger.warning("Could not save persistent state: {0}"
2409
.format(e))
2410
if e.errno not in (errno.ENOENT, errno.EACCES):
2411
raise
2412
2413
# Delete all clients, and settings from config
1982
2414
while tcp_server.clients:
1983
client = tcp_server.clients.pop()
2415
name, client = tcp_server.clients.popitem()
1984
2416
if use_dbus:
1985
2417
client.remove_from_connection()
1986
client.disable_hook = None
1987
2418
# Don't signal anything except ClientRemoved
1988
2419
client.disable(quiet=True)
1989
2420
if use_dbus:
1990
2421
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2422
mandos_dbus_service.ClientRemoved(client
2423
.dbus_object_path,
1992
2424
client.name)
2425
client_settings.clear()
1993
2426
1994
2427
atexit.register(cleanup)
1995
2428
1996
for client in tcp_server.clients:
2429
for client in tcp_server.clients.itervalues():
1997
2430
if use_dbus:
1998
2431
# Emit D-Bus signal
1999
2432
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2000
client.enable()
2433
# Need to initiate checking of clients
2434
if client.enabled:
2435
client.init_checker()
2001
2436
2002
2437
tcp_server.enable()
2003
2438
tcp_server.server_activate()
2005
2440
# Find out what port we got
2006
2441
service.port = tcp_server.socket.getsockname()[1]
2007
2442
if use_ipv6:
2008
logger.info(u"Now listening on address %r, port %d,"
2443
logger.info("Now listening on address %r, port %d,"
2009
2444
" flowinfo %d, scope_id %d"
2010
2445
% tcp_server.socket.getsockname())
2011
2446
else: # IPv4
2012
logger.info(u"Now listening on address %r, port %d"
2447
logger.info("Now listening on address %r, port %d"
2013
2448
% tcp_server.socket.getsockname())
2014
2449
2015
2450
#service.interface = tcp_server.socket.getsockname()[3]
2018
2453
# From the Avahi example code
2019
2454
try:
2020
2455
service.activate()
2021
except dbus.exceptions.DBusException, error:
2022
logger.critical(u"DBusException: %s", error)
2456
except dbus.exceptions.DBusException as error:
2457
logger.critical("DBusException: %s", error)
2023
2458
cleanup()
2024
2459
sys.exit(1)
2025
2460
# End of Avahi example code
2029
2464
(tcp_server.handle_request
2030
2465
(*args[2:], **kwargs) or True))
2031
2466
2032
logger.debug(u"Starting main loop")
2467
logger.debug("Starting main loop")
2033
2468
main_loop.run()
2034
except AvahiError, error:
2035
logger.critical(u"AvahiError: %s", error)
2469
except AvahiError as error:
2470
logger.critical("AvahiError: %s", error)
2036
2471
cleanup()
2037
2472
sys.exit(1)
2038
2473
except KeyboardInterrupt:
2039
2474
if debug:
2040
print >> sys.stderr
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
2475
print("", file=sys.stderr)
2476
logger.debug("Server received KeyboardInterrupt")
2477
logger.debug("Server exiting")
2043
2478
# Must run before the D-Bus bus name gets deregistered
2044
2479
cleanup()
2045
2480
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0