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- Committer: teddy at recompile
- Date: 2011-12-27 14:15:40 UTC
- Revision ID: teddy@recompile.se-20111227141540-ajrabf33q59jfa7t
Reorder TODO entries
- files added:
- debian/source
- network-hooks.d
- files modified:
- 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
14
# Copyright © 2008-2011 Teddy Hogeborn
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# Copyright © 2008-2011 Björn Påhlsson
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16
#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
34
from __future__ import division, with_statement, absolute_import
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
35
36
36
37
import SocketServer as socketserver
37
38
import socket
38
import optparse
39
import argparse
39
40
import datetime
40
41
import errno
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42
import gnutls.crypto
61
62
import functools
62
63
import cPickle as pickle
63
64
import multiprocessing
65
import types
66
import binascii
67
import tempfile
64
68
65
69
import dbus
66
70
import dbus.service
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75
import ctypes.util
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76
import xml.dom.minidom
73
77
import inspect
78
import GnuPGInterface
74
79
75
80
try:
76
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
80
85
except ImportError:
81
86
SO_BINDTODEVICE = None
82
87
83
84
version = "1.2"
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
89
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
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)
94
address = str("/dev/log")))
95
96
try:
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
100
except (OSError, AttributeError):
101
def if_nametoindex(interface):
102
"Get an interface index the hard way, i.e. using fcntl()"
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
with contextlib.closing(socket.socket()) as s:
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
110
return interface_index
111
112
113
def initlogger(debug, level=logging.WARNING):
114
"""init logger and add loglevel"""
115
116
syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
118
' %(message)s'))
119
logger.addHandler(syslogger)
120
121
if debug:
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
128
logger.setLevel(level)
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130
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class PGPError(Exception):
132
"""Exception if encryption/decryption fails"""
133
pass
134
135
136
class PGPEngine(object):
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
138
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet'])
146
147
def __enter__(self):
148
return self
149
150
def __exit__ (self, exc_type, exc_value, traceback):
151
self._cleanup()
152
return False
153
154
def __del__(self):
155
self._cleanup()
156
157
def _cleanup(self):
158
if self.tempdir is not None:
159
# Delete contents of tempdir
160
for root, dirs, files in os.walk(self.tempdir,
161
topdown = False):
162
for filename in files:
163
os.remove(os.path.join(root, filename))
164
for dirname in dirs:
165
os.rmdir(os.path.join(root, dirname))
166
# Remove tempdir
167
os.rmdir(self.tempdir)
168
self.tempdir = None
169
170
def password_encode(self, password):
171
# Passphrase can not be empty and can not contain newlines or
172
# NUL bytes. So we prefix it and hex encode it.
173
return b"mandos" + binascii.hexlify(password)
174
175
def encrypt(self, data, password):
176
self.gnupg.passphrase = self.password_encode(password)
177
with open(os.devnull) as devnull:
178
try:
179
proc = self.gnupg.run(['--symmetric'],
180
create_fhs=['stdin', 'stdout'],
181
attach_fhs={'stderr': devnull})
182
with contextlib.closing(proc.handles['stdin']) as f:
183
f.write(data)
184
with contextlib.closing(proc.handles['stdout']) as f:
185
ciphertext = f.read()
186
proc.wait()
187
except IOError as e:
188
raise PGPError(e)
189
self.gnupg.passphrase = None
190
return ciphertext
191
192
def decrypt(self, data, password):
193
self.gnupg.passphrase = self.password_encode(password)
194
with open(os.devnull) as devnull:
195
try:
196
proc = self.gnupg.run(['--decrypt'],
197
create_fhs=['stdin', 'stdout'],
198
attach_fhs={'stderr': devnull})
199
with contextlib.closing(proc.handles['stdin'] ) as f:
200
f.write(data)
201
with contextlib.closing(proc.handles['stdout']) as f:
202
decrypted_plaintext = f.read()
203
proc.wait()
204
except IOError as e:
205
raise PGPError(e)
206
self.gnupg.passphrase = None
207
return decrypted_plaintext
208
209
101
210
102
211
class AvahiError(Exception):
103
212
def __init__(self, value, *args, **kwargs):
119
228
Attributes:
120
229
interface: integer; avahi.IF_UNSPEC or an interface index.
121
230
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
231
name: string; Example: 'Mandos'
232
type: string; Example: '_mandos._tcp'.
124
233
See <http://www.dns-sd.org/ServiceTypes.html>
125
234
port: integer; what port to announce
126
235
TXT: list of strings; TXT record for the service
135
244
"""
136
245
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
246
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
247
domain = "", host = "", max_renames = 32768,
139
248
protocol = avahi.PROTO_UNSPEC, bus = None):
140
249
self.interface = interface
141
250
self.name = name
150
259
self.group = None # our entry group
151
260
self.server = None
152
261
self.bus = bus
262
self.entry_group_state_changed_match = None
153
263
def rename(self):
154
264
"""Derived from the Avahi example code"""
155
265
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
266
logger.critical("No suitable Zeroconf service name found"
267
" after %i retries, exiting.",
158
268
self.rename_count)
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
269
raise AvahiServiceError("Too many renames")
270
self.name = unicode(self.server
271
.GetAlternativeServiceName(self.name))
272
logger.info("Changing Zeroconf service name to %r ...",
162
273
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
274
self.remove()
168
275
try:
169
276
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
277
except dbus.exceptions.DBusException as error:
278
logger.critical("DBusException: %s", error)
172
279
self.cleanup()
173
280
os._exit(1)
174
281
self.rename_count += 1
175
282
def remove(self):
176
283
"""Derived from the Avahi example code"""
284
if self.entry_group_state_changed_match is not None:
285
self.entry_group_state_changed_match.remove()
286
self.entry_group_state_changed_match = None
177
287
if self.group is not None:
178
288
self.group.Reset()
179
289
def add(self):
180
290
"""Derived from the Avahi example code"""
291
self.remove()
181
292
if self.group is None:
182
293
self.group = dbus.Interface(
183
294
self.bus.get_object(avahi.DBUS_NAME,
184
295
self.server.EntryGroupNew()),
185
296
avahi.DBUS_INTERFACE_ENTRY_GROUP)
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
297
self.entry_group_state_changed_match = (
298
self.group.connect_to_signal(
299
'StateChanged', self.entry_group_state_changed))
300
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
190
301
self.name, self.type)
191
302
self.group.AddService(
192
303
self.interface,
199
310
self.group.Commit()
200
311
def entry_group_state_changed(self, state, error):
201
312
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
313
logger.debug("Avahi entry group state change: %i", state)
203
314
204
315
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
316
logger.debug("Zeroconf service established.")
206
317
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
318
logger.info("Zeroconf service name collision.")
208
319
self.rename()
209
320
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
321
logger.critical("Avahi: Error in group state changed %s",
211
322
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
323
raise AvahiGroupError("State changed: %s"
213
324
% unicode(error))
214
325
def cleanup(self):
215
326
"""Derived from the Avahi example code"""
216
327
if self.group is not None:
217
self.group.Free()
328
try:
329
self.group.Free()
330
except (dbus.exceptions.UnknownMethodException,
331
dbus.exceptions.DBusException):
332
pass
218
333
self.group = None
219
def server_state_changed(self, state):
334
self.remove()
335
def server_state_changed(self, state, error=None):
220
336
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
337
logger.debug("Avahi server state change: %i", state)
338
bad_states = { avahi.SERVER_INVALID:
339
"Zeroconf server invalid",
340
avahi.SERVER_REGISTERING: None,
341
avahi.SERVER_COLLISION:
342
"Zeroconf server name collision",
343
avahi.SERVER_FAILURE:
344
"Zeroconf server failure" }
345
if state in bad_states:
346
if bad_states[state] is not None:
347
if error is None:
348
logger.error(bad_states[state])
349
else:
350
logger.error(bad_states[state] + ": %r", error)
351
self.cleanup()
225
352
elif state == avahi.SERVER_RUNNING:
226
353
self.add()
354
else:
355
if error is None:
356
logger.debug("Unknown state: %r", state)
357
else:
358
logger.debug("Unknown state: %r: %r", state, error)
227
359
def activate(self):
228
360
"""Derived from the Avahi example code"""
229
361
if self.server is None:
230
362
self.server = dbus.Interface(
231
363
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
364
avahi.DBUS_PATH_SERVER,
365
follow_name_owner_changes=True),
233
366
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
367
self.server.connect_to_signal("StateChanged",
235
368
self.server_state_changed)
236
369
self.server_state_changed(self.server.GetState())
237
370
371
class AvahiServiceToSyslog(AvahiService):
372
def rename(self):
373
"""Add the new name to the syslog messages"""
374
ret = AvahiService.rename(self)
375
syslogger.setFormatter(logging.Formatter
376
('Mandos (%s) [%%(process)d]:'
377
' %%(levelname)s: %%(message)s'
378
% self.name))
379
return ret
238
380
381
def timedelta_to_milliseconds(td):
382
"Convert a datetime.timedelta() to milliseconds"
383
return ((td.days * 24 * 60 * 60 * 1000)
384
+ (td.seconds * 1000)
385
+ (td.microseconds // 1000))
386
239
387
class Client(object):
240
388
"""A representation of a client host served by this server.
241
389
242
390
Attributes:
243
_approved: bool(); 'None' if not yet approved/disapproved
391
approved: bool(); 'None' if not yet approved/disapproved
244
392
approval_delay: datetime.timedelta(); Time to wait for approval
245
393
approval_duration: datetime.timedelta(); Duration of one approval
246
394
checker: subprocess.Popen(); a running checker process used
253
401
instance %(name)s can be used in the command.
254
402
checker_initiator_tag: a gobject event source tag, or None
255
403
created: datetime.datetime(); (UTC) object creation
404
client_structure: Object describing what attributes a client has
405
and is used for storing the client at exit
256
406
current_checker_command: string; current running checker_command
257
disable_hook: If set, called by disable() as disable_hook(self)
258
407
disable_initiator_tag: a gobject event source tag, or None
259
408
enabled: bool()
260
409
fingerprint: string (40 or 32 hexadecimal digits); used to
263
412
interval: datetime.timedelta(); How often to start a new checker
264
413
last_approval_request: datetime.datetime(); (UTC) or None
265
414
last_checked_ok: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
415
last_checker_status: integer between 0 and 255 reflecting exit
416
status of last checker. -1 reflects crashed
417
checker, or None.
418
last_enabled: datetime.datetime(); (UTC) or None
267
419
name: string; from the config file, used in log messages and
268
420
D-Bus identifiers
269
421
secret: bytestring; sent verbatim (over TLS) to client
270
422
timeout: datetime.timedelta(); How long from last_checked_ok
271
423
until this client is disabled
424
extended_timeout: extra long timeout when password has been sent
272
425
runtime_expansions: Allowed attributes for runtime expansion.
426
expires: datetime.datetime(); time (UTC) when a client will be
427
disabled, or None
273
428
"""
274
429
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))
430
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
433
"last_enabled", "name", "timeout")
434
client_defaults = { "timeout": "5m",
435
"extended_timeout": "15m",
436
"interval": "2m",
437
"checker": "fping -q -- %%(host)s",
438
"host": "",
439
"approval_delay": "0s",
440
"approval_duration": "1s",
441
"approved_by_default": "True",
442
"enabled": "True",
443
}
286
444
287
445
def timeout_milliseconds(self):
288
446
"Return the 'timeout' attribute in milliseconds"
289
return self._timedelta_to_milliseconds(self.timeout)
447
return timedelta_to_milliseconds(self.timeout)
448
449
def extended_timeout_milliseconds(self):
450
"Return the 'extended_timeout' attribute in milliseconds"
451
return timedelta_to_milliseconds(self.extended_timeout)
290
452
291
453
def interval_milliseconds(self):
292
454
"Return the 'interval' attribute in milliseconds"
293
return self._timedelta_to_milliseconds(self.interval)
294
455
return timedelta_to_milliseconds(self.interval)
456
295
457
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):
458
return timedelta_to_milliseconds(self.approval_delay)
459
460
@staticmethod
461
def config_parser(config):
462
""" Construct a new dict of client settings of this form:
463
{ client_name: {setting_name: value, ...}, ...}
464
with exceptions for any special settings as defined above"""
465
settings = {}
466
for client_name in config.sections():
467
section = dict(config.items(client_name))
468
client = settings[client_name] = {}
469
470
client["host"] = section["host"]
471
# Reformat values from string types to Python types
472
client["approved_by_default"] = config.getboolean(
473
client_name, "approved_by_default")
474
client["enabled"] = config.getboolean(client_name, "enabled")
475
476
client["fingerprint"] = (section["fingerprint"].upper()
477
.replace(" ", ""))
478
if "secret" in section:
479
client["secret"] = section["secret"].decode("base64")
480
elif "secfile" in section:
481
with open(os.path.expanduser(os.path.expandvars
482
(section["secfile"])),
483
"rb") as secfile:
484
client["secret"] = secfile.read()
485
else:
486
raise TypeError("No secret or secfile for section %s"
487
% section)
488
client["timeout"] = string_to_delta(section["timeout"])
489
client["extended_timeout"] = string_to_delta(
490
section["extended_timeout"])
491
client["interval"] = string_to_delta(section["interval"])
492
client["approval_delay"] = string_to_delta(
493
section["approval_delay"])
494
client["approval_duration"] = string_to_delta(
495
section["approval_duration"])
496
client["checker_command"] = section["checker"]
497
client["last_approval_request"] = None
498
client["last_checked_ok"] = None
499
client["last_checker_status"] = None
500
if client["enabled"]:
501
client["last_enabled"] = datetime.datetime.utcnow()
502
client["expires"] = (datetime.datetime.utcnow()
503
+ client["timeout"])
504
else:
505
client["last_enabled"] = None
506
client["expires"] = None
507
508
return settings
509
510
511
def __init__(self, settings, name = None):
299
512
"""Note: the 'checker' key in 'config' sets the
300
513
'checker_command' attribute and *not* the 'checker'
301
514
attribute."""
302
515
self.name = name
303
if config is None:
304
config = {}
305
logger.debug(u"Creating client %r", self.name)
516
# adding all client settings
517
for setting, value in settings.iteritems():
518
setattr(self, setting, value)
519
520
logger.debug("Creating client %r", self.name)
306
521
# Uppercase and remove spaces from fingerprint for later
307
522
# comparison purposes with return value from the fingerprint()
308
523
# 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
524
logger.debug(" Fingerprint: %s", self.fingerprint)
525
self.created = settings.get("created", datetime.datetime.utcnow())
526
527
# attributes specific for this server instance
331
528
self.checker = None
332
529
self.checker_initiator_tag = None
333
530
self.disable_initiator_tag = None
334
531
self.checker_callback_tag = None
335
self.checker_command = config[u"checker"]
336
532
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)
533
self.approved = None
341
534
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())
535
self.changedstate = (multiprocessing_manager
536
.Condition(multiprocessing_manager
537
.Lock()))
538
self.client_structure = [attr for attr in
539
self.__dict__.iterkeys()
540
if not attr.startswith("_")]
541
self.client_structure.append("client_structure")
542
543
for name, t in inspect.getmembers(type(self),
544
lambda obj:
545
isinstance(obj,
546
property)):
547
if not name.startswith("_"):
548
self.client_structure.append(name)
347
549
550
# Send notice to process children that client state has changed
348
551
def send_changedstate(self):
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
552
with self.changedstate:
553
self.changedstate.notify_all()
554
353
555
def enable(self):
354
556
"""Start this client's checker and timeout hooks"""
355
if getattr(self, u"enabled", False):
557
if getattr(self, "enabled", False):
356
558
# Already enabled
357
559
return
358
560
self.send_changedstate()
561
self.expires = datetime.datetime.utcnow() + self.timeout
562
self.enabled = True
359
563
self.last_enabled = datetime.datetime.utcnow()
564
self.init_checker()
565
566
def disable(self, quiet=True):
567
"""Disable this client."""
568
if not getattr(self, "enabled", False):
569
return False
570
if not quiet:
571
self.send_changedstate()
572
if not quiet:
573
logger.info("Disabling client %s", self.name)
574
if getattr(self, "disable_initiator_tag", False):
575
gobject.source_remove(self.disable_initiator_tag)
576
self.disable_initiator_tag = None
577
self.expires = None
578
if getattr(self, "checker_initiator_tag", False):
579
gobject.source_remove(self.checker_initiator_tag)
580
self.checker_initiator_tag = None
581
self.stop_checker()
582
self.enabled = False
583
# Do not run this again if called by a gobject.timeout_add
584
return False
585
586
def __del__(self):
587
self.disable()
588
589
def init_checker(self):
360
590
# Schedule a new checker to be started an 'interval' from now,
361
591
# and every interval from then on.
362
592
self.checker_initiator_tag = (gobject.timeout_add
366
596
self.disable_initiator_tag = (gobject.timeout_add
367
597
(self.timeout_milliseconds(),
368
598
self.disable))
369
self.enabled = True
370
599
# Also start a new checker *right now*.
371
600
self.start_checker()
372
601
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
602
def checker_callback(self, pid, condition, command):
399
603
"""The checker has completed, so take appropriate actions."""
400
604
self.checker_callback_tag = None
401
605
self.checker = None
402
606
if os.WIFEXITED(condition):
403
exitstatus = os.WEXITSTATUS(condition)
404
if exitstatus == 0:
405
logger.info(u"Checker for %(name)s succeeded",
607
self.last_checker_status = os.WEXITSTATUS(condition)
608
if self.last_checker_status == 0:
609
logger.info("Checker for %(name)s succeeded",
406
610
vars(self))
407
611
self.checked_ok()
408
612
else:
409
logger.info(u"Checker for %(name)s failed",
613
logger.info("Checker for %(name)s failed",
410
614
vars(self))
411
615
else:
412
logger.warning(u"Checker for %(name)s crashed?",
616
self.last_checker_status = -1
617
logger.warning("Checker for %(name)s crashed?",
413
618
vars(self))
414
619
415
def checked_ok(self):
620
def checked_ok(self, timeout=None):
416
621
"""Bump up the timeout for this client.
417
622
418
623
This should only be called when the client has been seen,
419
624
alive and well.
420
625
"""
626
if timeout is None:
627
timeout = self.timeout
421
628
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))
629
if self.disable_initiator_tag is not None:
630
gobject.source_remove(self.disable_initiator_tag)
631
if getattr(self, "enabled", False):
632
self.disable_initiator_tag = (gobject.timeout_add
633
(timedelta_to_milliseconds
634
(timeout), self.disable))
635
self.expires = datetime.datetime.utcnow() + timeout
426
636
427
637
def need_approval(self):
428
638
self.last_approval_request = datetime.datetime.utcnow()
444
654
# If a checker exists, make sure it is not a zombie
445
655
try:
446
656
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
447
except (AttributeError, OSError), error:
657
except (AttributeError, OSError) as error:
448
658
if (isinstance(error, OSError)
449
659
and error.errno != errno.ECHILD):
450
660
raise error
451
661
else:
452
662
if pid:
453
logger.warning(u"Checker was a zombie")
663
logger.warning("Checker was a zombie")
454
664
gobject.source_remove(self.checker_callback_tag)
455
665
self.checker_callback(pid, status,
456
666
self.current_checker_command)
463
673
# Escape attributes for the shell
464
674
escaped_attrs = dict(
465
675
(attr,
466
re.escape(unicode(str(getattr(self, attr, u"")),
676
re.escape(unicode(str(getattr(self, attr, "")),
467
677
errors=
468
u'replace')))
678
'replace')))
469
679
for attr in
470
680
self.runtime_expansions)
471
681
472
682
try:
473
683
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)
684
except TypeError as error:
685
logger.error('Could not format string "%s":'
686
' %s', self.checker_command, error)
477
687
return True # Try again later
478
688
self.current_checker_command = command
479
689
try:
480
logger.info(u"Starting checker %r for %s",
690
logger.info("Starting checker %r for %s",
481
691
command, self.name)
482
692
# We don't need to redirect stdout and stderr, since
483
693
# in normal mode, that is already done by daemon(),
485
695
# always replaced by /dev/null.)
486
696
self.checker = subprocess.Popen(command,
487
697
close_fds=True,
488
shell=True, cwd=u"/")
698
shell=True, cwd="/")
489
699
self.checker_callback_tag = (gobject.child_watch_add
490
700
(self.checker.pid,
491
701
self.checker_callback,
496
706
if pid:
497
707
gobject.source_remove(self.checker_callback_tag)
498
708
self.checker_callback(pid, status, command)
499
except OSError, error:
500
logger.error(u"Failed to start subprocess: %s",
709
except OSError as error:
710
logger.error("Failed to start subprocess: %s",
501
711
error)
502
712
# Re-run this periodically if run by gobject.timeout_add
503
713
return True
507
717
if self.checker_callback_tag:
508
718
gobject.source_remove(self.checker_callback_tag)
509
719
self.checker_callback_tag = None
510
if getattr(self, u"checker", None) is None:
720
if getattr(self, "checker", None) is None:
511
721
return
512
logger.debug(u"Stopping checker for %(name)s", vars(self))
722
logger.debug("Stopping checker for %(name)s", vars(self))
513
723
try:
514
724
os.kill(self.checker.pid, signal.SIGTERM)
515
725
#time.sleep(0.5)
516
726
#if self.checker.poll() is None:
517
727
# os.kill(self.checker.pid, signal.SIGKILL)
518
except OSError, error:
728
except OSError as error:
519
729
if error.errno != errno.ESRCH: # No such process
520
730
raise
521
731
self.checker = None
522
732
523
def dbus_service_property(dbus_interface, signature=u"v",
524
access=u"readwrite", byte_arrays=False):
733
734
def dbus_service_property(dbus_interface, signature="v",
735
access="readwrite", byte_arrays=False):
525
736
"""Decorators for marking methods of a DBusObjectWithProperties to
526
737
become properties on the D-Bus.
527
738
534
745
"""
535
746
# Encoding deeply encoded byte arrays is not supported yet by the
536
747
# "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)
748
if byte_arrays and signature != "ay":
749
raise ValueError("Byte arrays not supported for non-'ay'"
750
" signature %r" % signature)
540
751
def decorator(func):
541
752
func._dbus_is_property = True
542
753
func._dbus_interface = dbus_interface
543
754
func._dbus_signature = signature
544
755
func._dbus_access = access
545
756
func._dbus_name = func.__name__
546
if func._dbus_name.endswith(u"_dbus_property"):
757
if func._dbus_name.endswith("_dbus_property"):
547
758
func._dbus_name = func._dbus_name[:-14]
548
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
759
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
549
760
return func
550
761
return decorator
551
762
571
782
572
783
class DBusObjectWithProperties(dbus.service.Object):
573
784
"""A D-Bus object with properties.
574
785
575
786
Classes inheriting from this can use the dbus_service_property
576
787
decorator to expose methods as D-Bus properties. It exposes the
577
788
standard Get(), Set(), and GetAll() methods on the D-Bus.
579
790
580
791
@staticmethod
581
792
def _is_dbus_property(obj):
582
return getattr(obj, u"_dbus_is_property", False)
793
return getattr(obj, "_dbus_is_property", False)
583
794
584
795
def _get_all_dbus_properties(self):
585
796
"""Returns a generator of (name, attribute) pairs
586
797
"""
587
return ((prop._dbus_name, prop)
798
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
799
for cls in self.__class__.__mro__
588
800
for name, prop in
589
inspect.getmembers(self, self._is_dbus_property))
801
inspect.getmembers(cls, self._is_dbus_property))
590
802
591
803
def _get_dbus_property(self, interface_name, property_name):
592
804
"""Returns a bound method if one exists which is a D-Bus
593
805
property with the specified name and interface.
594
806
"""
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
807
for cls in self.__class__.__mro__:
808
for name, value in (inspect.getmembers
809
(cls, self._is_dbus_property)):
810
if (value._dbus_name == property_name
811
and value._dbus_interface == interface_name):
812
return value.__get__(self)
813
605
814
# No such property
606
raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
+ interface_name + u"."
815
raise DBusPropertyNotFound(self.dbus_object_path + ":"
816
+ interface_name + "."
608
817
+ property_name)
609
818
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
611
out_signature=u"v")
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
820
out_signature="v")
612
821
def Get(self, interface_name, property_name):
613
822
"""Standard D-Bus property Get() method, see D-Bus standard.
614
823
"""
615
824
prop = self._get_dbus_property(interface_name, property_name)
616
if prop._dbus_access == u"write":
825
if prop._dbus_access == "write":
617
826
raise DBusPropertyAccessException(property_name)
618
827
value = prop()
619
if not hasattr(value, u"variant_level"):
828
if not hasattr(value, "variant_level"):
620
829
return value
621
830
return type(value)(value, variant_level=value.variant_level+1)
622
831
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
832
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
624
833
def Set(self, interface_name, property_name, value):
625
834
"""Standard D-Bus property Set() method, see D-Bus standard.
626
835
"""
627
836
prop = self._get_dbus_property(interface_name, property_name)
628
if prop._dbus_access == u"read":
837
if prop._dbus_access == "read":
629
838
raise DBusPropertyAccessException(property_name)
630
if prop._dbus_get_args_options[u"byte_arrays"]:
839
if prop._dbus_get_args_options["byte_arrays"]:
631
840
# The byte_arrays option is not supported yet on
632
841
# signatures other than "ay".
633
if prop._dbus_signature != u"ay":
842
if prop._dbus_signature != "ay":
634
843
raise ValueError
635
844
value = dbus.ByteArray(''.join(unichr(byte)
636
845
for byte in value))
637
846
prop(value)
638
847
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
848
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
849
out_signature="a{sv}")
641
850
def GetAll(self, interface_name):
642
851
"""Standard D-Bus property GetAll() method, see D-Bus
643
852
standard.
644
853
645
854
Note: Will not include properties with access="write".
646
855
"""
647
all = {}
856
properties = {}
648
857
for name, prop in self._get_all_dbus_properties():
649
858
if (interface_name
650
859
and interface_name != prop._dbus_interface):
651
860
# Interface non-empty but did not match
652
861
continue
653
862
# Ignore write-only properties
654
if prop._dbus_access == u"write":
863
if prop._dbus_access == "write":
655
864
continue
656
865
value = prop()
657
if not hasattr(value, u"variant_level"):
658
all[name] = value
866
if not hasattr(value, "variant_level"):
867
properties[name] = value
659
868
continue
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
869
properties[name] = type(value)(value, variant_level=
870
value.variant_level+1)
871
return dbus.Dictionary(properties, signature="sv")
663
872
664
873
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
665
out_signature=u"s",
874
out_signature="s",
666
875
path_keyword='object_path',
667
876
connection_keyword='connection')
668
877
def Introspect(self, object_path, connection):
673
882
try:
674
883
document = xml.dom.minidom.parseString(xmlstring)
675
884
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)
885
e = document.createElement("property")
886
e.setAttribute("name", name)
887
e.setAttribute("type", prop._dbus_signature)
888
e.setAttribute("access", prop._dbus_access)
680
889
return e
681
for if_tag in document.getElementsByTagName(u"interface"):
890
for if_tag in document.getElementsByTagName("interface"):
682
891
for tag in (make_tag(document, name, prop)
683
892
for name, prop
684
893
in self._get_all_dbus_properties()
685
894
if prop._dbus_interface
686
== if_tag.getAttribute(u"name")):
895
== if_tag.getAttribute("name")):
687
896
if_tag.appendChild(tag)
688
897
# Add the names to the return values for the
689
898
# "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")
899
if (if_tag.getAttribute("name")
900
== "org.freedesktop.DBus.Properties"):
901
for cn in if_tag.getElementsByTagName("method"):
902
if cn.getAttribute("name") == "Get":
903
for arg in cn.getElementsByTagName("arg"):
904
if (arg.getAttribute("direction")
905
== "out"):
906
arg.setAttribute("name", "value")
907
elif cn.getAttribute("name") == "GetAll":
908
for arg in cn.getElementsByTagName("arg"):
909
if (arg.getAttribute("direction")
910
== "out"):
911
arg.setAttribute("name", "props")
912
xmlstring = document.toxml("utf-8")
704
913
document.unlink()
705
914
except (AttributeError, xml.dom.DOMException,
706
xml.parsers.expat.ExpatError), error:
707
logger.error(u"Failed to override Introspection method",
915
xml.parsers.expat.ExpatError) as error:
916
logger.error("Failed to override Introspection method",
708
917
error)
709
918
return xmlstring
710
919
711
920
921
def datetime_to_dbus (dt, variant_level=0):
922
"""Convert a UTC datetime.datetime() to a D-Bus type."""
923
if dt is None:
924
return dbus.String("", variant_level = variant_level)
925
return dbus.String(dt.isoformat(),
926
variant_level=variant_level)
927
928
929
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
930
.__metaclass__):
931
"""Applied to an empty subclass of a D-Bus object, this metaclass
932
will add additional D-Bus attributes matching a certain pattern.
933
"""
934
def __new__(mcs, name, bases, attr):
935
# Go through all the base classes which could have D-Bus
936
# methods, signals, or properties in them
937
for base in (b for b in bases
938
if issubclass(b, dbus.service.Object)):
939
# Go though all attributes of the base class
940
for attrname, attribute in inspect.getmembers(base):
941
# Ignore non-D-Bus attributes, and D-Bus attributes
942
# with the wrong interface name
943
if (not hasattr(attribute, "_dbus_interface")
944
or not attribute._dbus_interface
945
.startswith("se.recompile.Mandos")):
946
continue
947
# Create an alternate D-Bus interface name based on
948
# the current name
949
alt_interface = (attribute._dbus_interface
950
.replace("se.recompile.Mandos",
951
"se.bsnet.fukt.Mandos"))
952
# Is this a D-Bus signal?
953
if getattr(attribute, "_dbus_is_signal", False):
954
# Extract the original non-method function by
955
# black magic
956
nonmethod_func = (dict(
957
zip(attribute.func_code.co_freevars,
958
attribute.__closure__))["func"]
959
.cell_contents)
960
# Create a new, but exactly alike, function
961
# object, and decorate it to be a new D-Bus signal
962
# with the alternate D-Bus interface name
963
new_function = (dbus.service.signal
964
(alt_interface,
965
attribute._dbus_signature)
966
(types.FunctionType(
967
nonmethod_func.func_code,
968
nonmethod_func.func_globals,
969
nonmethod_func.func_name,
970
nonmethod_func.func_defaults,
971
nonmethod_func.func_closure)))
972
# Define a creator of a function to call both the
973
# old and new functions, so both the old and new
974
# signals gets sent when the function is called
975
def fixscope(func1, func2):
976
"""This function is a scope container to pass
977
func1 and func2 to the "call_both" function
978
outside of its arguments"""
979
def call_both(*args, **kwargs):
980
"""This function will emit two D-Bus
981
signals by calling func1 and func2"""
982
func1(*args, **kwargs)
983
func2(*args, **kwargs)
984
return call_both
985
# Create the "call_both" function and add it to
986
# the class
987
attr[attrname] = fixscope(attribute,
988
new_function)
989
# Is this a D-Bus method?
990
elif getattr(attribute, "_dbus_is_method", False):
991
# Create a new, but exactly alike, function
992
# object. Decorate it to be a new D-Bus method
993
# with the alternate D-Bus interface name. Add it
994
# to the class.
995
attr[attrname] = (dbus.service.method
996
(alt_interface,
997
attribute._dbus_in_signature,
998
attribute._dbus_out_signature)
999
(types.FunctionType
1000
(attribute.func_code,
1001
attribute.func_globals,
1002
attribute.func_name,
1003
attribute.func_defaults,
1004
attribute.func_closure)))
1005
# Is this a D-Bus property?
1006
elif getattr(attribute, "_dbus_is_property", False):
1007
# Create a new, but exactly alike, function
1008
# object, and decorate it to be a new D-Bus
1009
# property with the alternate D-Bus interface
1010
# name. Add it to the class.
1011
attr[attrname] = (dbus_service_property
1012
(alt_interface,
1013
attribute._dbus_signature,
1014
attribute._dbus_access,
1015
attribute
1016
._dbus_get_args_options
1017
["byte_arrays"])
1018
(types.FunctionType
1019
(attribute.func_code,
1020
attribute.func_globals,
1021
attribute.func_name,
1022
attribute.func_defaults,
1023
attribute.func_closure)))
1024
return type.__new__(mcs, name, bases, attr)
1025
1026
712
1027
class ClientDBus(Client, DBusObjectWithProperties):
713
1028
"""A Client class using D-Bus
714
1029
718
1033
"""
719
1034
720
1035
runtime_expansions = (Client.runtime_expansions
721
+ (u"dbus_object_path",))
1036
+ ("dbus_object_path",))
722
1037
723
1038
# dbus.service.Object doesn't use super(), so we can't either.
724
1039
725
1040
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
727
1041
self.bus = bus
728
1042
Client.__init__(self, *args, **kwargs)
1043
self._approvals_pending = 0
1044
1045
self._approvals_pending = 0
729
1046
# Only now, when this client is initialized, can it show up on
730
1047
# the D-Bus
731
1048
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
1049
{ord("."): ord("_"),
1050
ord("-"): ord("_")})
734
1051
self.dbus_object_path = (dbus.ObjectPath
735
(u"/clients/" + client_object_name))
1052
("/clients/" + client_object_name))
736
1053
DBusObjectWithProperties.__init__(self, self.bus,
737
1054
self.dbus_object_path)
738
1055
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
1056
def notifychangeproperty(transform_func,
1057
dbus_name, type_func=lambda x: x,
1058
variant_level=1):
1059
""" Modify a variable so that it's a property which announces
1060
its changes to DBus.
1061
1062
transform_fun: Function that takes a value and a variant_level
1063
and transforms it to a D-Bus type.
1064
dbus_name: D-Bus name of the variable
1065
type_func: Function that transform the value before sending it
1066
to the D-Bus. Default: no transform
1067
variant_level: D-Bus variant level. Default: 1
1068
"""
1069
attrname = "_{0}".format(dbus_name)
1070
def setter(self, value):
1071
if hasattr(self, "dbus_object_path"):
1072
if (not hasattr(self, attrname) or
1073
type_func(getattr(self, attrname, None))
1074
!= type_func(value)):
1075
dbus_value = transform_func(type_func(value),
1076
variant_level
1077
=variant_level)
1078
self.PropertyChanged(dbus.String(dbus_name),
1079
dbus_value)
1080
setattr(self, attrname, value)
1081
1082
return property(lambda self: getattr(self, attrname), setter)
1083
1084
1085
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1086
approvals_pending = notifychangeproperty(dbus.Boolean,
1087
"ApprovalPending",
1088
type_func = bool)
1089
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1090
last_enabled = notifychangeproperty(datetime_to_dbus,
1091
"LastEnabled")
1092
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1093
type_func = lambda checker:
1094
checker is not None)
1095
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1096
"LastCheckedOK")
1097
last_approval_request = notifychangeproperty(
1098
datetime_to_dbus, "LastApprovalRequest")
1099
approved_by_default = notifychangeproperty(dbus.Boolean,
1100
"ApprovedByDefault")
1101
approval_delay = notifychangeproperty(dbus.UInt64,
1102
"ApprovalDelay",
1103
type_func =
1104
timedelta_to_milliseconds)
1105
approval_duration = notifychangeproperty(
1106
dbus.UInt64, "ApprovalDuration",
1107
type_func = timedelta_to_milliseconds)
1108
host = notifychangeproperty(dbus.String, "Host")
1109
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1110
type_func =
1111
timedelta_to_milliseconds)
1112
extended_timeout = notifychangeproperty(
1113
dbus.UInt64, "ExtendedTimeout",
1114
type_func = timedelta_to_milliseconds)
1115
interval = notifychangeproperty(dbus.UInt64,
1116
"Interval",
1117
type_func =
1118
timedelta_to_milliseconds)
1119
checker_command = notifychangeproperty(dbus.String, "Checker")
1120
1121
del notifychangeproperty
782
1122
783
1123
def __del__(self, *args, **kwargs):
784
1124
try:
785
1125
self.remove_from_connection()
786
1126
except LookupError:
787
1127
pass
788
if hasattr(DBusObjectWithProperties, u"__del__"):
1128
if hasattr(DBusObjectWithProperties, "__del__"):
789
1129
DBusObjectWithProperties.__del__(self, *args, **kwargs)
790
1130
Client.__del__(self, *args, **kwargs)
791
1131
793
1133
*args, **kwargs):
794
1134
self.checker_callback_tag = None
795
1135
self.checker = None
796
# Emit D-Bus signal
797
self.PropertyChanged(dbus.String(u"CheckerRunning"),
798
dbus.Boolean(False, variant_level=1))
799
1136
if os.WIFEXITED(condition):
800
1137
exitstatus = os.WEXITSTATUS(condition)
801
1138
# Emit D-Bus signal
811
1148
return Client.checker_callback(self, pid, condition, command,
812
1149
*args, **kwargs)
813
1150
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
1151
def start_checker(self, *args, **kwargs):
833
1152
old_checker = self.checker
834
1153
if self.checker is not None:
841
1160
and old_checker_pid != self.checker.pid):
842
1161
# Emit D-Bus signal
843
1162
self.CheckerStarted(self.current_checker_command)
844
self.PropertyChanged(
845
dbus.String(u"CheckerRunning"),
846
dbus.Boolean(True, variant_level=1))
847
1163
return r
848
1164
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
1165
def _reset_approved(self):
859
self._approved = None
1166
self.approved = None
860
1167
return False
861
1168
862
1169
def approve(self, value=True):
863
1170
self.send_changedstate()
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
1171
self.approved = value
1172
gobject.timeout_add(timedelta_to_milliseconds
866
1173
(self.approval_duration),
867
1174
self._reset_approved)
868
1175
869
1176
870
1177
## D-Bus methods, signals & properties
871
_interface = u"se.bsnet.fukt.Mandos.Client"
1178
_interface = "se.recompile.Mandos.Client"
872
1179
873
1180
## Signals
874
1181
875
1182
# CheckerCompleted - signal
876
@dbus.service.signal(_interface, signature=u"nxs")
1183
@dbus.service.signal(_interface, signature="nxs")
877
1184
def CheckerCompleted(self, exitcode, waitstatus, command):
878
1185
"D-Bus signal"
879
1186
pass
880
1187
881
1188
# CheckerStarted - signal
882
@dbus.service.signal(_interface, signature=u"s")
1189
@dbus.service.signal(_interface, signature="s")
883
1190
def CheckerStarted(self, command):
884
1191
"D-Bus signal"
885
1192
pass
886
1193
887
1194
# PropertyChanged - signal
888
@dbus.service.signal(_interface, signature=u"sv")
1195
@dbus.service.signal(_interface, signature="sv")
889
1196
def PropertyChanged(self, property, value):
890
1197
"D-Bus signal"
891
1198
pass
900
1207
pass
901
1208
902
1209
# Rejected - signal
903
@dbus.service.signal(_interface, signature=u"s")
1210
@dbus.service.signal(_interface, signature="s")
904
1211
def Rejected(self, reason):
905
1212
"D-Bus signal"
906
1213
pass
907
1214
908
1215
# NeedApproval - signal
909
@dbus.service.signal(_interface, signature=u"tb")
1216
@dbus.service.signal(_interface, signature="tb")
910
1217
def NeedApproval(self, timeout, default):
911
1218
"D-Bus signal"
912
1219
return self.need_approval()
913
1220
1221
# NeRwequest - signal
1222
@dbus.service.signal(_interface, signature="s")
1223
def NewRequest(self, ip):
1224
"""D-Bus signal
1225
Is sent after a client request a password.
1226
"""
1227
pass
1228
914
1229
## Methods
915
1230
916
1231
# Approve - method
917
@dbus.service.method(_interface, in_signature=u"b")
1232
@dbus.service.method(_interface, in_signature="b")
918
1233
def Approve(self, value):
919
1234
self.approve(value)
920
1235
921
1236
# CheckedOK - method
922
1237
@dbus.service.method(_interface)
923
1238
def CheckedOK(self):
924
return self.checked_ok()
1239
self.checked_ok()
925
1240
926
1241
# Enable - method
927
1242
@dbus.service.method(_interface)
949
1264
## Properties
950
1265
951
1266
# ApprovalPending - property
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
1267
@dbus_service_property(_interface, signature="b", access="read")
953
1268
def ApprovalPending_dbus_property(self):
954
1269
return dbus.Boolean(bool(self.approvals_pending))
955
1270
956
1271
# ApprovedByDefault - property
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
1272
@dbus_service_property(_interface, signature="b",
1273
access="readwrite")
959
1274
def ApprovedByDefault_dbus_property(self, value=None):
960
1275
if value is None: # get
961
1276
return dbus.Boolean(self.approved_by_default)
962
1277
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
1278
967
1279
# ApprovalDelay - property
968
@dbus_service_property(_interface, signature=u"t",
969
access=u"readwrite")
1280
@dbus_service_property(_interface, signature="t",
1281
access="readwrite")
970
1282
def ApprovalDelay_dbus_property(self, value=None):
971
1283
if value is None: # get
972
1284
return dbus.UInt64(self.approval_delay_milliseconds())
973
1285
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
1286
978
1287
# ApprovalDuration - property
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
1288
@dbus_service_property(_interface, signature="t",
1289
access="readwrite")
981
1290
def ApprovalDuration_dbus_property(self, value=None):
982
1291
if value is None: # get
983
return dbus.UInt64(self._timedelta_to_milliseconds(
1292
return dbus.UInt64(timedelta_to_milliseconds(
984
1293
self.approval_duration))
985
1294
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
1295
990
1296
# Name - property
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
1297
@dbus_service_property(_interface, signature="s", access="read")
992
1298
def Name_dbus_property(self):
993
1299
return dbus.String(self.name)
994
1300
995
1301
# Fingerprint - property
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
1302
@dbus_service_property(_interface, signature="s", access="read")
997
1303
def Fingerprint_dbus_property(self):
998
1304
return dbus.String(self.fingerprint)
999
1305
1000
1306
# Host - property
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
1307
@dbus_service_property(_interface, signature="s",
1308
access="readwrite")
1003
1309
def Host_dbus_property(self, value=None):
1004
1310
if value is None: # get
1005
1311
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))
1312
self.host = unicode(value)
1010
1313
1011
1314
# Created - property
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
1315
@dbus_service_property(_interface, signature="s", access="read")
1013
1316
def Created_dbus_property(self):
1014
return dbus.String(self._datetime_to_dbus(self.created))
1317
return datetime_to_dbus(self.created)
1015
1318
1016
1319
# LastEnabled - property
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
1320
@dbus_service_property(_interface, signature="s", access="read")
1018
1321
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))
1322
return datetime_to_dbus(self.last_enabled)
1022
1323
1023
1324
# Enabled - property
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
1325
@dbus_service_property(_interface, signature="b",
1326
access="readwrite")
1026
1327
def Enabled_dbus_property(self, value=None):
1027
1328
if value is None: # get
1028
1329
return dbus.Boolean(self.enabled)
1032
1333
self.disable()
1033
1334
1034
1335
# LastCheckedOK - property
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
1336
@dbus_service_property(_interface, signature="s",
1337
access="readwrite")
1037
1338
def LastCheckedOK_dbus_property(self, value=None):
1038
1339
if value is not None:
1039
1340
self.checked_ok()
1040
1341
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))
1342
return datetime_to_dbus(self.last_checked_ok)
1343
1344
# Expires - property
1345
@dbus_service_property(_interface, signature="s", access="read")
1346
def Expires_dbus_property(self):
1347
return datetime_to_dbus(self.expires)
1045
1348
1046
1349
# LastApprovalRequest - property
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
1350
@dbus_service_property(_interface, signature="s", access="read")
1048
1351
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))
1352
return datetime_to_dbus(self.last_approval_request)
1054
1353
1055
1354
# Timeout - property
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
1355
@dbus_service_property(_interface, signature="t",
1356
access="readwrite")
1058
1357
def Timeout_dbus_property(self, value=None):
1059
1358
if value is None: # get
1060
1359
return dbus.UInt64(self.timeout_milliseconds())
1061
1360
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:
1361
if getattr(self, "disable_initiator_tag", None) is None:
1066
1362
return
1067
1363
# Reschedule timeout
1068
1364
gobject.source_remove(self.disable_initiator_tag)
1069
1365
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()))
1366
self.expires = None
1367
time_to_die = timedelta_to_milliseconds((self
1368
.last_checked_ok
1369
+ self.timeout)
1370
- datetime.datetime
1371
.utcnow())
1076
1372
if time_to_die <= 0:
1077
1373
# The timeout has passed
1078
1374
self.disable()
1079
1375
else:
1376
self.expires = (datetime.datetime.utcnow()
1377
+ datetime.timedelta(milliseconds =
1378
time_to_die))
1080
1379
self.disable_initiator_tag = (gobject.timeout_add
1081
1380
(time_to_die, self.disable))
1082
1381
1382
# ExtendedTimeout - property
1383
@dbus_service_property(_interface, signature="t",
1384
access="readwrite")
1385
def ExtendedTimeout_dbus_property(self, value=None):
1386
if value is None: # get
1387
return dbus.UInt64(self.extended_timeout_milliseconds())
1388
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1389
1083
1390
# Interval - property
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
1391
@dbus_service_property(_interface, signature="t",
1392
access="readwrite")
1086
1393
def Interval_dbus_property(self, value=None):
1087
1394
if value is None: # get
1088
1395
return dbus.UInt64(self.interval_milliseconds())
1089
1396
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:
1397
if getattr(self, "checker_initiator_tag", None) is None:
1094
1398
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
1399
if self.enabled:
1400
# Reschedule checker run
1401
gobject.source_remove(self.checker_initiator_tag)
1402
self.checker_initiator_tag = (gobject.timeout_add
1403
(value, self.start_checker))
1404
self.start_checker() # Start one now, too
1405
1101
1406
# Checker - property
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
1407
@dbus_service_property(_interface, signature="s",
1408
access="readwrite")
1104
1409
def Checker_dbus_property(self, value=None):
1105
1410
if value is None: # get
1106
1411
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))
1412
self.checker_command = unicode(value)
1112
1413
1113
1414
# CheckerRunning - property
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
1415
@dbus_service_property(_interface, signature="b",
1416
access="readwrite")
1116
1417
def CheckerRunning_dbus_property(self, value=None):
1117
1418
if value is None: # get
1118
1419
return dbus.Boolean(self.checker is not None)
1122
1423
self.stop_checker()
1123
1424
1124
1425
# ObjectPath - property
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
1426
@dbus_service_property(_interface, signature="o", access="read")
1126
1427
def ObjectPath_dbus_property(self):
1127
1428
return self.dbus_object_path # is already a dbus.ObjectPath
1128
1429
1129
1430
# Secret = property
1130
@dbus_service_property(_interface, signature=u"ay",
1131
access=u"write", byte_arrays=True)
1431
@dbus_service_property(_interface, signature="ay",
1432
access="write", byte_arrays=True)
1132
1433
def Secret_dbus_property(self, value):
1133
1434
self.secret = str(value)
1134
1435
1141
1442
self._pipe.send(('init', fpr, address))
1142
1443
if not self._pipe.recv():
1143
1444
raise KeyError()
1144
1445
1145
1446
def __getattribute__(self, name):
1146
if(name == '_pipe'):
1447
if name == '_pipe':
1147
1448
return super(ProxyClient, self).__getattribute__(name)
1148
1449
self._pipe.send(('getattr', name))
1149
1450
data = self._pipe.recv()
1154
1455
self._pipe.send(('funcall', name, args, kwargs))
1155
1456
return self._pipe.recv()[1]
1156
1457
return func
1157
1458
1158
1459
def __setattr__(self, name, value):
1159
if(name == '_pipe'):
1460
if name == '_pipe':
1160
1461
return super(ProxyClient, self).__setattr__(name, value)
1161
1462
self._pipe.send(('setattr', name, value))
1162
1463
1163
1464
1465
class ClientDBusTransitional(ClientDBus):
1466
__metaclass__ = AlternateDBusNamesMetaclass
1467
1468
1164
1469
class ClientHandler(socketserver.BaseRequestHandler, object):
1165
1470
"""A class to handle client connections.
1166
1471
1169
1474
1170
1475
def handle(self):
1171
1476
with contextlib.closing(self.server.child_pipe) as child_pipe:
1172
logger.info(u"TCP connection from: %s",
1477
logger.info("TCP connection from: %s",
1173
1478
unicode(self.client_address))
1174
logger.debug(u"Pipe FD: %d",
1479
logger.debug("Pipe FD: %d",
1175
1480
self.server.child_pipe.fileno())
1176
1481
1177
1482
session = (gnutls.connection
1178
1483
.ClientSession(self.request,
1179
1484
gnutls.connection
1180
1485
.X509Credentials()))
1181
1486
1182
1487
# Note: gnutls.connection.X509Credentials is really a
1183
1488
# generic GnuTLS certificate credentials object so long as
1184
1489
# no X.509 keys are added to it. Therefore, we can use it
1185
1490
# 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"))
1491
1492
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1493
# "+AES-256-CBC", "+SHA1",
1494
# "+COMP-NULL", "+CTYPE-OPENPGP",
1495
# "+DHE-DSS"))
1191
1496
# Use a fallback default, since this MUST be set.
1192
1497
priority = self.server.gnutls_priority
1193
1498
if priority is None:
1194
priority = u"NORMAL"
1499
priority = "NORMAL"
1195
1500
(gnutls.library.functions
1196
1501
.gnutls_priority_set_direct(session._c_object,
1197
1502
priority, None))
1198
1503
1199
1504
# Start communication using the Mandos protocol
1200
1505
# Get protocol number
1201
1506
line = self.request.makefile().readline()
1202
logger.debug(u"Protocol version: %r", line)
1507
logger.debug("Protocol version: %r", line)
1203
1508
try:
1204
1509
if int(line.strip().split()[0]) > 1:
1205
1510
raise RuntimeError
1206
except (ValueError, IndexError, RuntimeError), error:
1207
logger.error(u"Unknown protocol version: %s", error)
1511
except (ValueError, IndexError, RuntimeError) as error:
1512
logger.error("Unknown protocol version: %s", error)
1208
1513
return
1209
1514
1210
1515
# Start GnuTLS connection
1211
1516
try:
1212
1517
session.handshake()
1213
except gnutls.errors.GNUTLSError, error:
1214
logger.warning(u"Handshake failed: %s", error)
1518
except gnutls.errors.GNUTLSError as error:
1519
logger.warning("Handshake failed: %s", error)
1215
1520
# Do not run session.bye() here: the session is not
1216
1521
# established. Just abandon the request.
1217
1522
return
1218
logger.debug(u"Handshake succeeded")
1219
1523
logger.debug("Handshake succeeded")
1524
1220
1525
approval_required = False
1221
1526
try:
1222
1527
try:
1223
1528
fpr = self.fingerprint(self.peer_certificate
1224
1529
(session))
1225
except (TypeError, gnutls.errors.GNUTLSError), error:
1226
logger.warning(u"Bad certificate: %s", error)
1530
except (TypeError,
1531
gnutls.errors.GNUTLSError) as error:
1532
logger.warning("Bad certificate: %s", error)
1227
1533
return
1228
logger.debug(u"Fingerprint: %s", fpr)
1229
1534
logger.debug("Fingerprint: %s", fpr)
1535
1230
1536
try:
1231
1537
client = ProxyClient(child_pipe, fpr,
1232
1538
self.client_address)
1233
1539
except KeyError:
1234
1540
return
1235
1541
1542
if self.server.use_dbus:
1543
# Emit D-Bus signal
1544
client.NewRequest(str(self.client_address))
1545
1236
1546
if client.approval_delay:
1237
1547
delay = client.approval_delay
1238
1548
client.approvals_pending += 1
1240
1550
1241
1551
while True:
1242
1552
if not client.enabled:
1243
logger.warning(u"Client %s is disabled",
1553
logger.info("Client %s is disabled",
1244
1554
client.name)
1245
1555
if self.server.use_dbus:
1246
1556
# Emit D-Bus signal
1247
client.Rejected("Disabled")
1557
client.Rejected("Disabled")
1248
1558
return
1249
1559
1250
if client._approved or not client.approval_delay:
1560
if client.approved or not client.approval_delay:
1251
1561
#We are approved or approval is disabled
1252
1562
break
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
1563
elif client.approved is None:
1564
logger.info("Client %s needs approval",
1255
1565
client.name)
1256
1566
if self.server.use_dbus:
1257
1567
# Emit D-Bus signal
1259
1569
client.approval_delay_milliseconds(),
1260
1570
client.approved_by_default)
1261
1571
else:
1262
logger.warning(u"Client %s was not approved",
1572
logger.warning("Client %s was not approved",
1263
1573
client.name)
1264
1574
if self.server.use_dbus:
1265
1575
# Emit D-Bus signal
1267
1577
return
1268
1578
1269
1579
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
1271
1580
time = datetime.datetime.now()
1272
1581
client.changedstate.acquire()
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1582
(client.changedstate.wait
1583
(float(client.timedelta_to_milliseconds(delay)
1584
/ 1000)))
1274
1585
client.changedstate.release()
1275
1586
time2 = datetime.datetime.now()
1276
1587
if (time2 - time) >= delay:
1291
1602
while sent_size < len(client.secret):
1292
1603
try:
1293
1604
sent = session.send(client.secret[sent_size:])
1294
except (gnutls.errors.GNUTLSError), error:
1605
except gnutls.errors.GNUTLSError as error:
1295
1606
logger.warning("gnutls send failed")
1296
1607
return
1297
logger.debug(u"Sent: %d, remaining: %d",
1608
logger.debug("Sent: %d, remaining: %d",
1298
1609
sent, len(client.secret)
1299
1610
- (sent_size + sent))
1300
1611
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()
1612
1613
logger.info("Sending secret to %s", client.name)
1614
# bump the timeout using extended_timeout
1615
client.checked_ok(client.extended_timeout)
1305
1616
if self.server.use_dbus:
1306
1617
# Emit D-Bus signal
1307
1618
client.GotSecret()
1311
1622
client.approvals_pending -= 1
1312
1623
try:
1313
1624
session.bye()
1314
except (gnutls.errors.GNUTLSError), error:
1625
except gnutls.errors.GNUTLSError as error:
1315
1626
logger.warning("GnuTLS bye failed")
1316
1627
1317
1628
@staticmethod
1328
1639
.gnutls_certificate_get_peers
1329
1640
(session._c_object, ctypes.byref(list_size)))
1330
1641
if not bool(cert_list) and list_size.value != 0:
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
1642
raise gnutls.errors.GNUTLSError("error getting peer"
1643
" certificate")
1333
1644
if list_size.value == 0:
1334
1645
return None
1335
1646
cert = cert_list[0]
1361
1672
if crtverify.value != 0:
1362
1673
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1363
1674
raise (gnutls.errors.CertificateSecurityError
1364
(u"Verify failed"))
1675
("Verify failed"))
1365
1676
# New buffer for the fingerprint
1366
1677
buf = ctypes.create_string_buffer(20)
1367
1678
buf_len = ctypes.c_size_t()
1374
1685
# Convert the buffer to a Python bytestring
1375
1686
fpr = ctypes.string_at(buf, buf_len.value)
1376
1687
# Convert the bytestring to hexadecimal notation
1377
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1688
hex_fpr = binascii.hexlify(fpr).upper()
1378
1689
return hex_fpr
1379
1690
1380
1691
1383
1694
def sub_process_main(self, request, address):
1384
1695
try:
1385
1696
self.finish_request(request, address)
1386
except:
1697
except Exception:
1387
1698
self.handle_error(request, address)
1388
1699
self.close_request(request)
1389
1700
1390
1701
def process_request(self, request, address):
1391
1702
"""Start a new process to process the request."""
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
1703
proc = multiprocessing.Process(target = self.sub_process_main,
1704
args = (request,
1705
address))
1706
proc.start()
1707
return proc
1708
1394
1709
1395
1710
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1396
1711
""" adds a pipe to the MixIn """
1400
1715
This function creates a new pipe in self.pipe
1401
1716
"""
1402
1717
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1403
1404
super(MultiprocessingMixInWithPipe,
1405
self).process_request(request, client_address)
1718
1719
proc = MultiprocessingMixIn.process_request(self, request,
1720
client_address)
1406
1721
self.child_pipe.close()
1407
self.add_pipe(parent_pipe)
1408
1409
def add_pipe(self, parent_pipe):
1722
self.add_pipe(parent_pipe, proc)
1723
1724
def add_pipe(self, parent_pipe, proc):
1410
1725
"""Dummy function; override as necessary"""
1411
pass
1726
raise NotImplementedError
1727
1412
1728
1413
1729
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1414
1730
socketserver.TCPServer, object):
1432
1748
bind to an address or port if they were not specified."""
1433
1749
if self.interface is not None:
1434
1750
if SO_BINDTODEVICE is None:
1435
logger.error(u"SO_BINDTODEVICE does not exist;"
1436
u" cannot bind to interface %s",
1751
logger.error("SO_BINDTODEVICE does not exist;"
1752
" cannot bind to interface %s",
1437
1753
self.interface)
1438
1754
else:
1439
1755
try:
1440
1756
self.socket.setsockopt(socket.SOL_SOCKET,
1441
1757
SO_BINDTODEVICE,
1442
1758
str(self.interface
1443
+ u'\0'))
1444
except socket.error, error:
1759
+ '\0'))
1760
except socket.error as error:
1445
1761
if error[0] == errno.EPERM:
1446
logger.error(u"No permission to"
1447
u" bind to interface %s",
1762
logger.error("No permission to"
1763
" bind to interface %s",
1448
1764
self.interface)
1449
1765
elif error[0] == errno.ENOPROTOOPT:
1450
logger.error(u"SO_BINDTODEVICE not available;"
1451
u" cannot bind to interface %s",
1766
logger.error("SO_BINDTODEVICE not available;"
1767
" cannot bind to interface %s",
1452
1768
self.interface)
1453
1769
else:
1454
1770
raise
1456
1772
if self.server_address[0] or self.server_address[1]:
1457
1773
if not self.server_address[0]:
1458
1774
if self.address_family == socket.AF_INET6:
1459
any_address = u"::" # in6addr_any
1775
any_address = "::" # in6addr_any
1460
1776
else:
1461
1777
any_address = socket.INADDR_ANY
1462
1778
self.server_address = (any_address,
1489
1805
self.enabled = False
1490
1806
self.clients = clients
1491
1807
if self.clients is None:
1492
self.clients = set()
1808
self.clients = {}
1493
1809
self.use_dbus = use_dbus
1494
1810
self.gnutls_priority = gnutls_priority
1495
1811
IPv6_TCPServer.__init__(self, server_address,
1499
1815
def server_activate(self):
1500
1816
if self.enabled:
1501
1817
return socketserver.TCPServer.server_activate(self)
1818
1502
1819
def enable(self):
1503
1820
self.enabled = True
1504
def add_pipe(self, parent_pipe):
1821
1822
def add_pipe(self, parent_pipe, proc):
1505
1823
# Call "handle_ipc" for both data and EOF events
1506
1824
gobject.io_add_watch(parent_pipe.fileno(),
1507
1825
gobject.IO_IN | gobject.IO_HUP,
1508
1826
functools.partial(self.handle_ipc,
1509
parent_pipe = parent_pipe))
1510
1827
parent_pipe =
1828
parent_pipe,
1829
proc = proc))
1830
1511
1831
def handle_ipc(self, source, condition, parent_pipe=None,
1512
client_object=None):
1832
proc = None, client_object=None):
1513
1833
condition_names = {
1514
gobject.IO_IN: u"IN", # There is data to read.
1515
gobject.IO_OUT: u"OUT", # Data can be written (without
1834
gobject.IO_IN: "IN", # There is data to read.
1835
gobject.IO_OUT: "OUT", # Data can be written (without
1516
1836
# 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
1837
gobject.IO_PRI: "PRI", # There is urgent data to read.
1838
gobject.IO_ERR: "ERR", # Error condition.
1839
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1520
1840
# broken, usually for pipes and
1521
1841
# sockets).
1522
1842
}
1524
1844
for cond, name in
1525
1845
condition_names.iteritems()
1526
1846
if cond & condition)
1527
# error or the other end of multiprocessing.Pipe has closed
1847
# error, or the other end of multiprocessing.Pipe has closed
1528
1848
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1849
# Wait for other process to exit
1850
proc.join()
1529
1851
return False
1530
1852
1531
1853
# Read a request from the child
1536
1858
fpr = request[1]
1537
1859
address = request[2]
1538
1860
1539
for c in self.clients:
1861
for c in self.clients.itervalues():
1540
1862
if c.fingerprint == fpr:
1541
1863
client = c
1542
1864
break
1543
1865
else:
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
1866
logger.info("Client not found for fingerprint: %s, ad"
1867
"dress: %s", fpr, address)
1546
1868
if self.use_dbus:
1547
1869
# Emit D-Bus signal
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
1870
mandos_dbus_service.ClientNotFound(fpr,
1871
address[0])
1549
1872
parent_pipe.send(False)
1550
1873
return False
1551
1874
1552
1875
gobject.io_add_watch(parent_pipe.fileno(),
1553
1876
gobject.IO_IN | gobject.IO_HUP,
1554
1877
functools.partial(self.handle_ipc,
1555
parent_pipe = parent_pipe,
1556
client_object = client))
1878
parent_pipe =
1879
parent_pipe,
1880
proc = proc,
1881
client_object =
1882
client))
1557
1883
parent_pipe.send(True)
1558
# remove the old hook in favor of the new above hook on same fileno
1884
# remove the old hook in favor of the new above hook on
1885
# same fileno
1559
1886
return False
1560
1887
if command == 'funcall':
1561
1888
funcname = request[1]
1562
1889
args = request[2]
1563
1890
kwargs = request[3]
1564
1891
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1566
1892
parent_pipe.send(('data', getattr(client_object,
1893
funcname)(*args,
1894
**kwargs)))
1895
1567
1896
if command == 'getattr':
1568
1897
attrname = request[1]
1569
1898
if callable(client_object.__getattribute__(attrname)):
1570
1899
parent_pipe.send(('function',))
1571
1900
else:
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1901
parent_pipe.send(('data', client_object
1902
.__getattribute__(attrname)))
1573
1903
1574
1904
if command == 'setattr':
1575
1905
attrname = request[1]
1576
1906
value = request[2]
1577
1907
setattr(client_object, attrname, value)
1578
1908
1579
1909
return True
1580
1910
1581
1911
1582
1912
def string_to_delta(interval):
1583
1913
"""Parse a string and return a datetime.timedelta
1584
1914
1585
>>> string_to_delta(u'7d')
1915
>>> string_to_delta('7d')
1586
1916
datetime.timedelta(7)
1587
>>> string_to_delta(u'60s')
1917
>>> string_to_delta('60s')
1588
1918
datetime.timedelta(0, 60)
1589
>>> string_to_delta(u'60m')
1919
>>> string_to_delta('60m')
1590
1920
datetime.timedelta(0, 3600)
1591
>>> string_to_delta(u'24h')
1921
>>> string_to_delta('24h')
1592
1922
datetime.timedelta(1)
1593
>>> string_to_delta(u'1w')
1923
>>> string_to_delta('1w')
1594
1924
datetime.timedelta(7)
1595
>>> string_to_delta(u'5m 30s')
1925
>>> string_to_delta('5m 30s')
1596
1926
datetime.timedelta(0, 330)
1597
1927
"""
1598
1928
timevalue = datetime.timedelta(0)
1600
1930
try:
1601
1931
suffix = unicode(s[-1])
1602
1932
value = int(s[:-1])
1603
if suffix == u"d":
1933
if suffix == "d":
1604
1934
delta = datetime.timedelta(value)
1605
elif suffix == u"s":
1935
elif suffix == "s":
1606
1936
delta = datetime.timedelta(0, value)
1607
elif suffix == u"m":
1937
elif suffix == "m":
1608
1938
delta = datetime.timedelta(0, 0, 0, 0, value)
1609
elif suffix == u"h":
1939
elif suffix == "h":
1610
1940
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1611
elif suffix == u"w":
1941
elif suffix == "w":
1612
1942
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1613
1943
else:
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
1944
raise ValueError("Unknown suffix %r" % suffix)
1945
except (ValueError, IndexError) as e:
1946
raise ValueError(*(e.args))
1617
1947
timevalue += delta
1618
1948
return timevalue
1619
1949
1620
1950
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
1951
def daemon(nochdir = False, noclose = False):
1646
1952
"""See daemon(3). Standard BSD Unix function.
1647
1953
1650
1956
sys.exit()
1651
1957
os.setsid()
1652
1958
if not nochdir:
1653
os.chdir(u"/")
1959
os.chdir("/")
1654
1960
if os.fork():
1655
1961
sys.exit()
1656
1962
if not noclose:
1658
1964
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1659
1965
if not stat.S_ISCHR(os.fstat(null).st_mode):
1660
1966
raise OSError(errno.ENODEV,
1661
u"%s not a character device"
1967
"%s not a character device"
1662
1968
% os.path.devnull)
1663
1969
os.dup2(null, sys.stdin.fileno())
1664
1970
os.dup2(null, sys.stdout.fileno())
1672
1978
##################################################################
1673
1979
# Parsing of options, both command line and config file
1674
1980
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]
1981
parser = argparse.ArgumentParser()
1982
parser.add_argument("-v", "--version", action="version",
1983
version = "%%(prog)s %s" % version,
1984
help="show version number and exit")
1985
parser.add_argument("-i", "--interface", metavar="IF",
1986
help="Bind to interface IF")
1987
parser.add_argument("-a", "--address",
1988
help="Address to listen for requests on")
1989
parser.add_argument("-p", "--port", type=int,
1990
help="Port number to receive requests on")
1991
parser.add_argument("--check", action="store_true",
1992
help="Run self-test")
1993
parser.add_argument("--debug", action="store_true",
1994
help="Debug mode; run in foreground and log"
1995
" to terminal")
1996
parser.add_argument("--debuglevel", metavar="LEVEL",
1997
help="Debug level for stdout output")
1998
parser.add_argument("--priority", help="GnuTLS"
1999
" priority string (see GnuTLS documentation)")
2000
parser.add_argument("--servicename",
2001
metavar="NAME", help="Zeroconf service name")
2002
parser.add_argument("--configdir",
2003
default="/etc/mandos", metavar="DIR",
2004
help="Directory to search for configuration"
2005
" files")
2006
parser.add_argument("--no-dbus", action="store_false",
2007
dest="use_dbus", help="Do not provide D-Bus"
2008
" system bus interface")
2009
parser.add_argument("--no-ipv6", action="store_false",
2010
dest="use_ipv6", help="Do not use IPv6")
2011
parser.add_argument("--no-restore", action="store_false",
2012
dest="restore", help="Do not restore stored"
2013
" state")
2014
parser.add_argument("--statedir", metavar="DIR",
2015
help="Directory to save/restore state in")
2016
2017
options = parser.parse_args()
1703
2018
1704
2019
if options.check:
1705
2020
import doctest
1707
2022
sys.exit()
1708
2023
1709
2024
# 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"",
2025
server_defaults = { "interface": "",
2026
"address": "",
2027
"port": "",
2028
"debug": "False",
2029
"priority":
2030
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2031
"servicename": "Mandos",
2032
"use_dbus": "True",
2033
"use_ipv6": "True",
2034
"debuglevel": "",
2035
"restore": "True",
2036
"statedir": "/var/lib/mandos"
1720
2037
}
1721
2038
1722
2039
# Parse config file for server-global settings
1723
2040
server_config = configparser.SafeConfigParser(server_defaults)
1724
2041
del server_defaults
1725
2042
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
2043
"mandos.conf"))
1727
2044
# Convert the SafeConfigParser object to a dict
1728
2045
server_settings = server_config.defaults()
1729
2046
# 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",
2047
for option in ("debug", "use_dbus", "use_ipv6"):
2048
server_settings[option] = server_config.getboolean("DEFAULT",
1732
2049
option)
1733
2050
if server_settings["port"]:
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
2051
server_settings["port"] = server_config.getint("DEFAULT",
2052
"port")
1736
2053
del server_config
1737
2054
1738
2055
# Override the settings from the config file with command line
1739
2056
# 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"):
2057
for option in ("interface", "address", "port", "debug",
2058
"priority", "servicename", "configdir",
2059
"use_dbus", "use_ipv6", "debuglevel", "restore",
2060
"statedir"):
1743
2061
value = getattr(options, option)
1744
2062
if value is not None:
1745
2063
server_settings[option] = value
1753
2071
##################################################################
1754
2072
1755
2073
# 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":
2074
debug = server_settings["debug"]
2075
debuglevel = server_settings["debuglevel"]
2076
use_dbus = server_settings["use_dbus"]
2077
use_ipv6 = server_settings["use_ipv6"]
2078
stored_state_path = os.path.join(server_settings["statedir"],
2079
stored_state_file)
2080
2081
if debug:
2082
initlogger(debug, logging.DEBUG)
2083
else:
2084
if not debuglevel:
2085
initlogger(debug)
2086
else:
2087
level = getattr(logging, debuglevel.upper())
2088
initlogger(debug, level)
2089
2090
if server_settings["servicename"] != "Mandos":
1762
2091
syslogger.setFormatter(logging.Formatter
1763
(u'Mandos (%s) [%%(process)d]:'
1764
u' %%(levelname)s: %%(message)s'
1765
% server_settings[u"servicename"]))
2092
('Mandos (%s) [%%(process)d]:'
2093
' %%(levelname)s: %%(message)s'
2094
% server_settings["servicename"]))
1766
2095
1767
2096
# 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"))
2097
client_config = configparser.SafeConfigParser(Client.client_defaults)
2098
client_config.read(os.path.join(server_settings["configdir"],
2099
"clients.conf"))
1778
2100
1779
2101
global mandos_dbus_service
1780
2102
mandos_dbus_service = None
1781
2103
1782
tcp_server = MandosServer((server_settings[u"address"],
1783
server_settings[u"port"]),
2104
tcp_server = MandosServer((server_settings["address"],
2105
server_settings["port"]),
1784
2106
ClientHandler,
1785
interface=(server_settings[u"interface"]
2107
interface=(server_settings["interface"]
1786
2108
or None),
1787
2109
use_ipv6=use_ipv6,
1788
2110
gnutls_priority=
1789
server_settings[u"priority"],
2111
server_settings["priority"],
1790
2112
use_dbus=use_dbus)
1791
2113
if not debug:
1792
pidfilename = u"/var/run/mandos.pid"
2114
pidfilename = "/var/run/mandos.pid"
1793
2115
try:
1794
pidfile = open(pidfilename, u"w")
2116
pidfile = open(pidfilename, "w")
1795
2117
except IOError:
1796
logger.error(u"Could not open file %r", pidfilename)
2118
logger.error("Could not open file %r", pidfilename)
1797
2119
1798
2120
try:
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
2121
uid = pwd.getpwnam("_mandos").pw_uid
2122
gid = pwd.getpwnam("_mandos").pw_gid
1801
2123
except KeyError:
1802
2124
try:
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
2125
uid = pwd.getpwnam("mandos").pw_uid
2126
gid = pwd.getpwnam("mandos").pw_gid
1805
2127
except KeyError:
1806
2128
try:
1807
uid = pwd.getpwnam(u"nobody").pw_uid
1808
gid = pwd.getpwnam(u"nobody").pw_gid
2129
uid = pwd.getpwnam("nobody").pw_uid
2130
gid = pwd.getpwnam("nobody").pw_gid
1809
2131
except KeyError:
1810
2132
uid = 65534
1811
2133
gid = 65534
1812
2134
try:
1813
2135
os.setgid(gid)
1814
2136
os.setuid(uid)
1815
except OSError, error:
2137
except OSError as error:
1816
2138
if error[0] != errno.EPERM:
1817
2139
raise error
1818
2140
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
2141
if debug:
1828
2142
# Enable all possible GnuTLS debugging
1829
2143
1833
2147
1834
2148
@gnutls.library.types.gnutls_log_func
1835
2149
def debug_gnutls(level, string):
1836
logger.debug(u"GnuTLS: %s", string[:-1])
2150
logger.debug("GnuTLS: %s", string[:-1])
1837
2151
1838
2152
(gnutls.library.functions
1839
2153
.gnutls_global_set_log_function(debug_gnutls))
1843
2157
os.dup2(null, sys.stdin.fileno())
1844
2158
if null > 2:
1845
2159
os.close(null)
1846
else:
1847
# No console logging
1848
logger.removeHandler(console)
1849
2160
2161
# Need to fork before connecting to D-Bus
2162
if not debug:
2163
# Close all input and output, do double fork, etc.
2164
daemon()
2165
2166
gobject.threads_init()
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
except EOFError as e:
2220
logger.warning("Could not load persistent state: "
2221
"EOFError: {0}".format(e))
2222
2223
with PGPEngine() as pgp:
2224
for client_name, client in clients_data.iteritems():
2225
# Decide which value to use after restoring saved state.
2226
# We have three different values: Old config file,
2227
# new config file, and saved state.
2228
# New config value takes precedence if it differs from old
2229
# config value, otherwise use saved state.
2230
for name, value in client_settings[client_name].items():
2231
try:
2232
# For each value in new config, check if it
2233
# differs from the old config value (Except for
2234
# the "secret" attribute)
2235
if (name != "secret" and
2236
value != old_client_settings[client_name]
2237
[name]):
2238
client[name] = value
2239
except KeyError:
2240
pass
2241
2242
# Clients who has passed its expire date can still be
2243
# enabled if its last checker was successful. Clients
2244
# whose checker failed before we stored its state is
2245
# assumed to have failed all checkers during downtime.
2246
if client["enabled"]:
2247
if datetime.datetime.utcnow() >= client["expires"]:
2248
if not client["last_checked_ok"]:
2249
logger.warning(
2250
"disabling client {0} - Client never "
2251
"performed a successfull checker"
2252
.format(client["name"]))
2253
client["enabled"] = False
2254
elif client["last_checker_status"] != 0:
2255
logger.warning(
2256
"disabling client {0} - Client "
2257
"last checker failed with error code {1}"
2258
.format(client["name"],
2259
client["last_checker_status"]))
2260
client["enabled"] = False
2261
else:
2262
client["expires"] = (datetime.datetime
2263
.utcnow()
2264
+ client["timeout"])
2265
1891
2266
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()))
2267
client["secret"] = (
2268
pgp.decrypt(client["encrypted_secret"],
2269
client_settings[client_name]
2270
["secret"]))
2271
except PGPError:
2272
# If decryption fails, we use secret from new settings
2273
logger.debug("Failed to decrypt {0} old secret"
2274
.format(client_name))
2275
client["secret"] = (
2276
client_settings[client_name]["secret"])
2277
2278
2279
# Add/remove clients based on new changes made to config
2280
for client_name in set(old_client_settings) - set(client_settings):
2281
del clients_data[client_name]
2282
for client_name in set(client_settings) - set(old_client_settings):
2283
clients_data[client_name] = client_settings[client_name]
2284
2285
# Create clients all clients
2286
for client_name, client in clients_data.iteritems():
2287
tcp_server.clients[client_name] = client_class(
2288
name = client_name, settings = client)
2289
1901
2290
if not tcp_server.clients:
1902
logger.warning(u"No clients defined")
2291
logger.warning("No clients defined")
1903
2292
1904
2293
if not debug:
1905
2294
try:
1906
2295
with pidfile:
1907
2296
pid = os.getpid()
1908
pidfile.write(str(pid) + "\n")
2297
pidfile.write(str(pid) + "\n".encode("utf-8"))
1909
2298
del pidfile
1910
2299
except IOError:
1911
logger.error(u"Could not write to file %r with PID %d",
2300
logger.error("Could not write to file %r with PID %d",
1912
2301
pidfilename, pid)
1913
2302
except NameError:
1914
2303
# "pidfile" was never created
1915
2304
pass
1916
2305
del pidfilename
1917
1918
2306
signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
2307
1920
2308
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1921
2309
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1922
2310
1924
2312
class MandosDBusService(dbus.service.Object):
1925
2313
"""A D-Bus proxy object"""
1926
2314
def __init__(self):
1927
dbus.service.Object.__init__(self, bus, u"/")
1928
_interface = u"se.bsnet.fukt.Mandos"
2315
dbus.service.Object.__init__(self, bus, "/")
2316
_interface = "se.recompile.Mandos"
1929
2317
1930
@dbus.service.signal(_interface, signature=u"o")
2318
@dbus.service.signal(_interface, signature="o")
1931
2319
def ClientAdded(self, objpath):
1932
2320
"D-Bus signal"
1933
2321
pass
1934
2322
1935
@dbus.service.signal(_interface, signature=u"ss")
2323
@dbus.service.signal(_interface, signature="ss")
1936
2324
def ClientNotFound(self, fingerprint, address):
1937
2325
"D-Bus signal"
1938
2326
pass
1939
2327
1940
@dbus.service.signal(_interface, signature=u"os")
2328
@dbus.service.signal(_interface, signature="os")
1941
2329
def ClientRemoved(self, objpath, name):
1942
2330
"D-Bus signal"
1943
2331
pass
1944
2332
1945
@dbus.service.method(_interface, out_signature=u"ao")
2333
@dbus.service.method(_interface, out_signature="ao")
1946
2334
def GetAllClients(self):
1947
2335
"D-Bus method"
1948
2336
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
2337
for c in
2338
tcp_server.clients.itervalues())
1950
2339
1951
2340
@dbus.service.method(_interface,
1952
out_signature=u"a{oa{sv}}")
2341
out_signature="a{oa{sv}}")
1953
2342
def GetAllClientsWithProperties(self):
1954
2343
"D-Bus method"
1955
2344
return dbus.Dictionary(
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
2345
((c.dbus_object_path, c.GetAll(""))
2346
for c in tcp_server.clients.itervalues()),
2347
signature="oa{sv}")
1959
2348
1960
@dbus.service.method(_interface, in_signature=u"o")
2349
@dbus.service.method(_interface, in_signature="o")
1961
2350
def RemoveClient(self, object_path):
1962
2351
"D-Bus method"
1963
for c in tcp_server.clients:
2352
for c in tcp_server.clients.itervalues():
1964
2353
if c.dbus_object_path == object_path:
1965
tcp_server.clients.remove(c)
2354
del tcp_server.clients[c.name]
1966
2355
c.remove_from_connection()
1967
2356
# Don't signal anything except ClientRemoved
1968
2357
c.disable(quiet=True)
1973
2362
1974
2363
del _interface
1975
2364
1976
mandos_dbus_service = MandosDBusService()
2365
class MandosDBusServiceTransitional(MandosDBusService):
2366
__metaclass__ = AlternateDBusNamesMetaclass
2367
mandos_dbus_service = MandosDBusServiceTransitional()
1977
2368
1978
2369
def cleanup():
1979
2370
"Cleanup function; run on exit"
1980
2371
service.cleanup()
1981
2372
2373
multiprocessing.active_children()
2374
if not (tcp_server.clients or client_settings):
2375
return
2376
2377
# Store client before exiting. Secrets are encrypted with key
2378
# based on what config file has. If config file is
2379
# removed/edited, old secret will thus be unrecovable.
2380
clients = {}
2381
with PGPEngine() as pgp:
2382
for client in tcp_server.clients.itervalues():
2383
key = client_settings[client.name]["secret"]
2384
client.encrypted_secret = pgp.encrypt(client.secret,
2385
key)
2386
client_dict = {}
2387
2388
# A list of attributes that can not be pickled
2389
# + secret.
2390
exclude = set(("bus", "changedstate", "secret",
2391
"checker"))
2392
for name, typ in (inspect.getmembers
2393
(dbus.service.Object)):
2394
exclude.add(name)
2395
2396
client_dict["encrypted_secret"] = (client
2397
.encrypted_secret)
2398
for attr in client.client_structure:
2399
if attr not in exclude:
2400
client_dict[attr] = getattr(client, attr)
2401
2402
clients[client.name] = client_dict
2403
del client_settings[client.name]["secret"]
2404
2405
try:
2406
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2407
prefix="clients-",
2408
dir=os.path.dirname
2409
(stored_state_path))
2410
with os.fdopen(tempfd, "wb") as stored_state:
2411
pickle.dump((clients, client_settings), stored_state)
2412
os.rename(tempname, stored_state_path)
2413
except (IOError, OSError) as e:
2414
logger.warning("Could not save persistent state: {0}"
2415
.format(e))
2416
if not debug:
2417
try:
2418
os.remove(tempname)
2419
except NameError:
2420
pass
2421
if e.errno not in set((errno.ENOENT, errno.EACCES,
2422
errno.EEXIST)):
2423
raise e
2424
2425
# Delete all clients, and settings from config
1982
2426
while tcp_server.clients:
1983
client = tcp_server.clients.pop()
2427
name, client = tcp_server.clients.popitem()
1984
2428
if use_dbus:
1985
2429
client.remove_from_connection()
1986
client.disable_hook = None
1987
2430
# Don't signal anything except ClientRemoved
1988
2431
client.disable(quiet=True)
1989
2432
if use_dbus:
1990
2433
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2434
mandos_dbus_service.ClientRemoved(client
2435
.dbus_object_path,
1992
2436
client.name)
2437
client_settings.clear()
1993
2438
1994
2439
atexit.register(cleanup)
1995
2440
1996
for client in tcp_server.clients:
2441
for client in tcp_server.clients.itervalues():
1997
2442
if use_dbus:
1998
2443
# Emit D-Bus signal
1999
2444
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2000
client.enable()
2445
# Need to initiate checking of clients
2446
if client.enabled:
2447
client.init_checker()
2001
2448
2002
2449
tcp_server.enable()
2003
2450
tcp_server.server_activate()
2005
2452
# Find out what port we got
2006
2453
service.port = tcp_server.socket.getsockname()[1]
2007
2454
if use_ipv6:
2008
logger.info(u"Now listening on address %r, port %d,"
2455
logger.info("Now listening on address %r, port %d,"
2009
2456
" flowinfo %d, scope_id %d"
2010
2457
% tcp_server.socket.getsockname())
2011
2458
else: # IPv4
2012
logger.info(u"Now listening on address %r, port %d"
2459
logger.info("Now listening on address %r, port %d"
2013
2460
% tcp_server.socket.getsockname())
2014
2461
2015
2462
#service.interface = tcp_server.socket.getsockname()[3]
2018
2465
# From the Avahi example code
2019
2466
try:
2020
2467
service.activate()
2021
except dbus.exceptions.DBusException, error:
2022
logger.critical(u"DBusException: %s", error)
2468
except dbus.exceptions.DBusException as error:
2469
logger.critical("DBusException: %s", error)
2023
2470
cleanup()
2024
2471
sys.exit(1)
2025
2472
# End of Avahi example code
2029
2476
(tcp_server.handle_request
2030
2477
(*args[2:], **kwargs) or True))
2031
2478
2032
logger.debug(u"Starting main loop")
2479
logger.debug("Starting main loop")
2033
2480
main_loop.run()
2034
except AvahiError, error:
2035
logger.critical(u"AvahiError: %s", error)
2481
except AvahiError as error:
2482
logger.critical("AvahiError: %s", error)
2036
2483
cleanup()
2037
2484
sys.exit(1)
2038
2485
except KeyboardInterrupt:
2039
2486
if debug:
2040
print >> sys.stderr
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
2487
print("", file=sys.stderr)
2488
logger.debug("Server received KeyboardInterrupt")
2489
logger.debug("Server exiting")
2043
2490
# Must run before the D-Bus bus name gets deregistered
2044
2491
cleanup()
2045
2492
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0