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- Committer: Teddy Hogeborn
- Date: 2010-09-12 03:00:40 UTC
- Revision ID: teddy@fukt.bsnet.se-20100912030040-b0uopyennste9fdh
Documentation changes:
* DBUS-API: New file documenting the server D-Bus interface.
* clients.conf: Add examples of new approval settings.
* debian/mandos.docs: Added "DBUS-API".
* mandos-clients.conf.xml (OPTIONS): Added "approved_by_default",
"approval_delay", and
"approval_duration".
* mandos.xml (D-BUS INTERFACE): Refer to the "DBUS-API" file.
(BUGS): Remove mention of lack of a remote query interface.
* DBUS-API: New file documenting the server D-Bus interface.
* clients.conf: Add examples of new approval settings.
* debian/mandos.docs: Added "DBUS-API".
* mandos-clients.conf.xml (OPTIONS): Added "approved_by_default",
"approval_delay", and
"approval_duration".
* mandos.xml (D-BUS INTERFACE): Refer to the "DBUS-API" file.
(BUGS): Remove mention of lack of a remote query interface.
- files removed:
- debian/source
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
14
# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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16
#
17
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# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
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# along with this program. If not, see
29
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# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
34
from __future__ import division, with_statement, absolute_import
36
35
37
36
import SocketServer as socketserver
38
37
import socket
39
import argparse
38
import optparse
40
39
import datetime
41
40
import errno
42
41
import gnutls.crypto
62
61
import functools
63
62
import cPickle as pickle
64
63
import multiprocessing
65
import types
66
import binascii
67
import tempfile
68
64
69
65
import dbus
70
66
import dbus.service
75
71
import ctypes.util
76
72
import xml.dom.minidom
77
73
import inspect
78
import GnuPGInterface
79
74
80
75
try:
81
76
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
80
except ImportError:
86
81
SO_BINDTODEVICE = None
87
82
88
version = "1.5.3"
89
stored_state_file = "clients.pickle"
90
91
logger = logging.getLogger()
83
84
version = "1.0.14"
85
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#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
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syslogger = (logging.handlers.SysLogHandler
93
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
95
96
try:
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
100
except (OSError, AttributeError):
101
def if_nametoindex(interface):
102
"Get an interface index the hard way, i.e. using fcntl()"
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
with contextlib.closing(socket.socket()) as s:
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
110
return interface_index
111
112
113
def initlogger(debug, level=logging.WARNING):
114
"""init logger and add loglevel"""
115
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syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
118
' %(message)s'))
119
logger.addHandler(syslogger)
120
121
if debug:
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
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logger.setLevel(level)
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130
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class PGPError(Exception):
132
"""Exception if encryption/decryption fails"""
133
pass
134
135
136
class PGPEngine(object):
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
138
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
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self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet',
146
'--no-use-agent'])
147
148
def __enter__(self):
149
return self
150
151
def __exit__ (self, exc_type, exc_value, traceback):
152
self._cleanup()
153
return False
154
155
def __del__(self):
156
self._cleanup()
157
158
def _cleanup(self):
159
if self.tempdir is not None:
160
# Delete contents of tempdir
161
for root, dirs, files in os.walk(self.tempdir,
162
topdown = False):
163
for filename in files:
164
os.remove(os.path.join(root, filename))
165
for dirname in dirs:
166
os.rmdir(os.path.join(root, dirname))
167
# Remove tempdir
168
os.rmdir(self.tempdir)
169
self.tempdir = None
170
171
def password_encode(self, password):
172
# Passphrase can not be empty and can not contain newlines or
173
# NUL bytes. So we prefix it and hex encode it.
174
return b"mandos" + binascii.hexlify(password)
175
176
def encrypt(self, data, password):
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
179
try:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
184
f.write(data)
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
187
proc.wait()
188
except IOError as e:
189
raise PGPError(e)
190
self.gnupg.passphrase = None
191
return ciphertext
192
193
def decrypt(self, data, password):
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
196
try:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
201
f.write(data)
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
204
proc.wait()
205
except IOError as e:
206
raise PGPError(e)
207
self.gnupg.passphrase = None
208
return decrypted_plaintext
209
210
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)
211
101
212
102
class AvahiError(Exception):
213
103
def __init__(self, value, *args, **kwargs):
229
119
Attributes:
230
120
interface: integer; avahi.IF_UNSPEC or an interface index.
231
121
Used to optionally bind to the specified interface.
232
name: string; Example: 'Mandos'
233
type: string; Example: '_mandos._tcp'.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
234
124
See <http://www.dns-sd.org/ServiceTypes.html>
235
125
port: integer; what port to announce
236
126
TXT: list of strings; TXT record for the service
245
135
"""
246
136
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
247
137
servicetype = None, port = None, TXT = None,
248
domain = "", host = "", max_renames = 32768,
138
domain = u"", host = u"", max_renames = 32768,
249
139
protocol = avahi.PROTO_UNSPEC, bus = None):
250
140
self.interface = interface
251
141
self.name = name
260
150
self.group = None # our entry group
261
151
self.server = None
262
152
self.bus = bus
263
self.entry_group_state_changed_match = None
264
153
def rename(self):
265
154
"""Derived from the Avahi example code"""
266
155
if self.rename_count >= self.max_renames:
267
logger.critical("No suitable Zeroconf service name found"
268
" after %i retries, exiting.",
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
269
158
self.rename_count)
270
raise AvahiServiceError("Too many renames")
271
self.name = unicode(self.server
272
.GetAlternativeServiceName(self.name))
273
logger.info("Changing Zeroconf service name to %r ...",
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 ...",
274
162
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
275
167
self.remove()
276
168
try:
277
169
self.add()
278
except dbus.exceptions.DBusException as error:
279
logger.critical("DBusException: %s", error)
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
280
172
self.cleanup()
281
173
os._exit(1)
282
174
self.rename_count += 1
283
175
def remove(self):
284
176
"""Derived from the Avahi example code"""
285
if self.entry_group_state_changed_match is not None:
286
self.entry_group_state_changed_match.remove()
287
self.entry_group_state_changed_match = None
288
177
if self.group is not None:
289
178
self.group.Reset()
290
179
def add(self):
291
180
"""Derived from the Avahi example code"""
292
self.remove()
293
181
if self.group is None:
294
182
self.group = dbus.Interface(
295
183
self.bus.get_object(avahi.DBUS_NAME,
296
184
self.server.EntryGroupNew()),
297
185
avahi.DBUS_INTERFACE_ENTRY_GROUP)
298
self.entry_group_state_changed_match = (
299
self.group.connect_to_signal(
300
'StateChanged', self.entry_group_state_changed))
301
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
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' ...",
302
190
self.name, self.type)
303
191
self.group.AddService(
304
192
self.interface,
311
199
self.group.Commit()
312
200
def entry_group_state_changed(self, state, error):
313
201
"""Derived from the Avahi example code"""
314
logger.debug("Avahi entry group state change: %i", state)
202
logger.debug(u"Avahi entry group state change: %i", state)
315
203
316
204
if state == avahi.ENTRY_GROUP_ESTABLISHED:
317
logger.debug("Zeroconf service established.")
205
logger.debug(u"Zeroconf service established.")
318
206
elif state == avahi.ENTRY_GROUP_COLLISION:
319
logger.info("Zeroconf service name collision.")
207
logger.warning(u"Zeroconf service name collision.")
320
208
self.rename()
321
209
elif state == avahi.ENTRY_GROUP_FAILURE:
322
logger.critical("Avahi: Error in group state changed %s",
210
logger.critical(u"Avahi: Error in group state changed %s",
323
211
unicode(error))
324
raise AvahiGroupError("State changed: %s"
212
raise AvahiGroupError(u"State changed: %s"
325
213
% unicode(error))
326
214
def cleanup(self):
327
215
"""Derived from the Avahi example code"""
328
216
if self.group is not None:
329
try:
330
self.group.Free()
331
except (dbus.exceptions.UnknownMethodException,
332
dbus.exceptions.DBusException):
333
pass
217
self.group.Free()
334
218
self.group = None
335
self.remove()
336
def server_state_changed(self, state, error=None):
219
def server_state_changed(self, state):
337
220
"""Derived from the Avahi example code"""
338
logger.debug("Avahi server state change: %i", state)
339
bad_states = { avahi.SERVER_INVALID:
340
"Zeroconf server invalid",
341
avahi.SERVER_REGISTERING: None,
342
avahi.SERVER_COLLISION:
343
"Zeroconf server name collision",
344
avahi.SERVER_FAILURE:
345
"Zeroconf server failure" }
346
if state in bad_states:
347
if bad_states[state] is not None:
348
if error is None:
349
logger.error(bad_states[state])
350
else:
351
logger.error(bad_states[state] + ": %r", error)
352
self.cleanup()
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()
353
225
elif state == avahi.SERVER_RUNNING:
354
226
self.add()
355
else:
356
if error is None:
357
logger.debug("Unknown state: %r", state)
358
else:
359
logger.debug("Unknown state: %r: %r", state, error)
360
227
def activate(self):
361
228
"""Derived from the Avahi example code"""
362
229
if self.server is None:
363
230
self.server = dbus.Interface(
364
231
self.bus.get_object(avahi.DBUS_NAME,
365
avahi.DBUS_PATH_SERVER,
366
follow_name_owner_changes=True),
232
avahi.DBUS_PATH_SERVER),
367
233
avahi.DBUS_INTERFACE_SERVER)
368
self.server.connect_to_signal("StateChanged",
234
self.server.connect_to_signal(u"StateChanged",
369
235
self.server_state_changed)
370
236
self.server_state_changed(self.server.GetState())
371
237
372
class AvahiServiceToSyslog(AvahiService):
373
def rename(self):
374
"""Add the new name to the syslog messages"""
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
379
% self.name))
380
return ret
381
238
382
def timedelta_to_milliseconds(td):
383
"Convert a datetime.timedelta() to milliseconds"
384
return ((td.days * 24 * 60 * 60 * 1000)
385
+ (td.seconds * 1000)
386
+ (td.microseconds // 1000))
387
388
239
class Client(object):
389
240
"""A representation of a client host served by this server.
390
241
391
242
Attributes:
392
approved: bool(); 'None' if not yet approved/disapproved
393
approval_delay: datetime.timedelta(); Time to wait for approval
394
approval_duration: datetime.timedelta(); Duration of one approval
243
name: string; from the config file, used in log messages and
244
D-Bus identifiers
245
fingerprint: string (40 or 32 hexadecimal digits); used to
246
uniquely identify the client
247
secret: bytestring; sent verbatim (over TLS) to client
248
host: string; available for use by the checker command
249
created: datetime.datetime(); (UTC) object creation
250
last_enabled: datetime.datetime(); (UTC)
251
enabled: bool()
252
last_checked_ok: datetime.datetime(); (UTC) or None
253
timeout: datetime.timedelta(); How long from last_checked_ok
254
until this client is disabled
255
interval: datetime.timedelta(); How often to start a new checker
256
disable_hook: If set, called by disable() as disable_hook(self)
395
257
checker: subprocess.Popen(); a running checker process used
396
258
to see if the client lives.
397
259
'None' if no process is running.
398
checker_callback_tag: a gobject event source tag, or None
399
checker_command: string; External command which is run to check
400
if client lives. %() expansions are done at
260
checker_initiator_tag: a gobject event source tag, or None
261
disable_initiator_tag: - '' -
262
checker_callback_tag: - '' -
263
checker_command: string; External command which is run to check if
264
client lives. %() expansions are done at
401
265
runtime with vars(self) as dict, so that for
402
266
instance %(name)s can be used in the command.
403
checker_initiator_tag: a gobject event source tag, or None
404
created: datetime.datetime(); (UTC) object creation
405
client_structure: Object describing what attributes a client has
406
and is used for storing the client at exit
407
267
current_checker_command: string; current running checker_command
408
disable_initiator_tag: a gobject event source tag, or None
409
enabled: bool()
410
fingerprint: string (40 or 32 hexadecimal digits); used to
411
uniquely identify the client
412
host: string; available for use by the checker command
413
interval: datetime.timedelta(); How often to start a new checker
414
last_approval_request: datetime.datetime(); (UTC) or None
415
last_checked_ok: datetime.datetime(); (UTC) or None
416
last_checker_status: integer between 0 and 255 reflecting exit
417
status of last checker. -1 reflects crashed
418
checker, -2 means no checker completed yet.
419
last_enabled: datetime.datetime(); (UTC) or None
420
name: string; from the config file, used in log messages and
421
D-Bus identifiers
422
secret: bytestring; sent verbatim (over TLS) to client
423
timeout: datetime.timedelta(); How long from last_checked_ok
424
until this client is disabled
425
extended_timeout: extra long timeout when secret has been sent
426
runtime_expansions: Allowed attributes for runtime expansion.
427
expires: datetime.datetime(); time (UTC) when a client will be
428
disabled, or None
268
approval_delay: datetime.timedelta(); Time to wait for approval
269
_approved: bool(); 'None' if not yet approved/disapproved
270
approval_duration: datetime.timedelta(); Duration of one approval
429
271
"""
430
272
431
runtime_expansions = ("approval_delay", "approval_duration",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
434
"last_enabled", "name", "timeout")
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
437
"interval": "2m",
438
"checker": "fping -q -- %%(host)s",
439
"host": "",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
442
"approved_by_default": "True",
443
"enabled": "True",
444
}
273
@staticmethod
274
def _timedelta_to_milliseconds(td):
275
"Convert a datetime.timedelta() to milliseconds"
276
return ((td.days * 24 * 60 * 60 * 1000)
277
+ (td.seconds * 1000)
278
+ (td.microseconds // 1000))
445
279
446
280
def timeout_milliseconds(self):
447
281
"Return the 'timeout' attribute in milliseconds"
448
return timedelta_to_milliseconds(self.timeout)
449
450
def extended_timeout_milliseconds(self):
451
"Return the 'extended_timeout' attribute in milliseconds"
452
return timedelta_to_milliseconds(self.extended_timeout)
282
return self._timedelta_to_milliseconds(self.timeout)
453
283
454
284
def interval_milliseconds(self):
455
285
"Return the 'interval' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.interval)
457
286
return self._timedelta_to_milliseconds(self.interval)
287
458
288
def approval_delay_milliseconds(self):
459
return timedelta_to_milliseconds(self.approval_delay)
460
461
@staticmethod
462
def config_parser(config):
463
"""Construct a new dict of client settings of this form:
464
{ client_name: {setting_name: value, ...}, ...}
465
with exceptions for any special settings as defined above.
466
NOTE: Must be a pure function. Must return the same result
467
value given the same arguments.
468
"""
469
settings = {}
470
for client_name in config.sections():
471
section = dict(config.items(client_name))
472
client = settings[client_name] = {}
473
474
client["host"] = section["host"]
475
# Reformat values from string types to Python types
476
client["approved_by_default"] = config.getboolean(
477
client_name, "approved_by_default")
478
client["enabled"] = config.getboolean(client_name,
479
"enabled")
480
481
client["fingerprint"] = (section["fingerprint"].upper()
482
.replace(" ", ""))
483
if "secret" in section:
484
client["secret"] = section["secret"].decode("base64")
485
elif "secfile" in section:
486
with open(os.path.expanduser(os.path.expandvars
487
(section["secfile"])),
488
"rb") as secfile:
489
client["secret"] = secfile.read()
490
else:
491
raise TypeError("No secret or secfile for section %s"
492
% section)
493
client["timeout"] = string_to_delta(section["timeout"])
494
client["extended_timeout"] = string_to_delta(
495
section["extended_timeout"])
496
client["interval"] = string_to_delta(section["interval"])
497
client["approval_delay"] = string_to_delta(
498
section["approval_delay"])
499
client["approval_duration"] = string_to_delta(
500
section["approval_duration"])
501
client["checker_command"] = section["checker"]
502
client["last_approval_request"] = None
503
client["last_checked_ok"] = None
504
client["last_checker_status"] = -2
505
506
return settings
507
508
509
def __init__(self, settings, name = None):
289
return self._timedelta_to_milliseconds(self.approval_delay)
290
291
def __init__(self, name = None, disable_hook=None, config=None):
510
292
"""Note: the 'checker' key in 'config' sets the
511
293
'checker_command' attribute and *not* the 'checker'
512
294
attribute."""
513
295
self.name = name
514
# adding all client settings
515
for setting, value in settings.iteritems():
516
setattr(self, setting, value)
517
518
if self.enabled:
519
if not hasattr(self, "last_enabled"):
520
self.last_enabled = datetime.datetime.utcnow()
521
if not hasattr(self, "expires"):
522
self.expires = (datetime.datetime.utcnow()
523
+ self.timeout)
524
else:
525
self.last_enabled = None
526
self.expires = None
527
528
logger.debug("Creating client %r", self.name)
296
if config is None:
297
config = {}
298
logger.debug(u"Creating client %r", self.name)
529
299
# Uppercase and remove spaces from fingerprint for later
530
300
# comparison purposes with return value from the fingerprint()
531
301
# function
532
logger.debug(" Fingerprint: %s", self.fingerprint)
533
self.created = settings.get("created",
534
datetime.datetime.utcnow())
535
536
# attributes specific for this server instance
302
self.fingerprint = (config[u"fingerprint"].upper()
303
.replace(u" ", u""))
304
logger.debug(u" Fingerprint: %s", self.fingerprint)
305
if u"secret" in config:
306
self.secret = config[u"secret"].decode(u"base64")
307
elif u"secfile" in config:
308
with open(os.path.expanduser(os.path.expandvars
309
(config[u"secfile"])),
310
"rb") as secfile:
311
self.secret = secfile.read()
312
else:
313
raise TypeError(u"No secret or secfile for client %s"
314
% self.name)
315
self.host = config.get(u"host", u"")
316
self.created = datetime.datetime.utcnow()
317
self.enabled = False
318
self.last_enabled = None
319
self.last_checked_ok = None
320
self.timeout = string_to_delta(config[u"timeout"])
321
self.interval = string_to_delta(config[u"interval"])
322
self.disable_hook = disable_hook
537
323
self.checker = None
538
324
self.checker_initiator_tag = None
539
325
self.disable_initiator_tag = None
540
326
self.checker_callback_tag = None
327
self.checker_command = config[u"checker"]
541
328
self.current_checker_command = None
542
self.approved = None
329
self.last_connect = None
330
self._approved = None
331
self.approved_by_default = config.get(u"approved_by_default",
332
True)
543
333
self.approvals_pending = 0
544
self.changedstate = (multiprocessing_manager
545
.Condition(multiprocessing_manager
546
.Lock()))
547
self.client_structure = [attr for attr in
548
self.__dict__.iterkeys()
549
if not attr.startswith("_")]
550
self.client_structure.append("client_structure")
551
552
for name, t in inspect.getmembers(type(self),
553
lambda obj:
554
isinstance(obj,
555
property)):
556
if not name.startswith("_"):
557
self.client_structure.append(name)
334
self.approval_delay = string_to_delta(
335
config[u"approval_delay"])
336
self.approval_duration = string_to_delta(
337
config[u"approval_duration"])
338
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
558
339
559
# Send notice to process children that client state has changed
560
340
def send_changedstate(self):
561
with self.changedstate:
562
self.changedstate.notify_all()
563
341
self.changedstate.acquire()
342
self.changedstate.notify_all()
343
self.changedstate.release()
344
564
345
def enable(self):
565
346
"""Start this client's checker and timeout hooks"""
566
if getattr(self, "enabled", False):
347
if getattr(self, u"enabled", False):
567
348
# Already enabled
568
349
return
569
350
self.send_changedstate()
570
self.expires = datetime.datetime.utcnow() + self.timeout
571
self.enabled = True
572
351
self.last_enabled = datetime.datetime.utcnow()
573
self.init_checker()
574
575
def disable(self, quiet=True):
576
"""Disable this client."""
577
if not getattr(self, "enabled", False):
578
return False
579
if not quiet:
580
self.send_changedstate()
581
if not quiet:
582
logger.info("Disabling client %s", self.name)
583
if getattr(self, "disable_initiator_tag", False):
584
gobject.source_remove(self.disable_initiator_tag)
585
self.disable_initiator_tag = None
586
self.expires = None
587
if getattr(self, "checker_initiator_tag", False):
588
gobject.source_remove(self.checker_initiator_tag)
589
self.checker_initiator_tag = None
590
self.stop_checker()
591
self.enabled = False
592
# Do not run this again if called by a gobject.timeout_add
593
return False
594
595
def __del__(self):
596
self.disable()
597
598
def init_checker(self):
599
352
# Schedule a new checker to be started an 'interval' from now,
600
353
# and every interval from then on.
601
354
self.checker_initiator_tag = (gobject.timeout_add
605
358
self.disable_initiator_tag = (gobject.timeout_add
606
359
(self.timeout_milliseconds(),
607
360
self.disable))
361
self.enabled = True
608
362
# Also start a new checker *right now*.
609
363
self.start_checker()
610
364
365
def disable(self, quiet=True):
366
"""Disable this client."""
367
if not getattr(self, "enabled", False):
368
return False
369
if not quiet:
370
self.send_changedstate()
371
if not quiet:
372
logger.info(u"Disabling client %s", self.name)
373
if getattr(self, u"disable_initiator_tag", False):
374
gobject.source_remove(self.disable_initiator_tag)
375
self.disable_initiator_tag = None
376
if getattr(self, u"checker_initiator_tag", False):
377
gobject.source_remove(self.checker_initiator_tag)
378
self.checker_initiator_tag = None
379
self.stop_checker()
380
if self.disable_hook:
381
self.disable_hook(self)
382
self.enabled = False
383
# Do not run this again if called by a gobject.timeout_add
384
return False
385
386
def __del__(self):
387
self.disable_hook = None
388
self.disable()
389
611
390
def checker_callback(self, pid, condition, command):
612
391
"""The checker has completed, so take appropriate actions."""
613
392
self.checker_callback_tag = None
614
393
self.checker = None
615
394
if os.WIFEXITED(condition):
616
self.last_checker_status = os.WEXITSTATUS(condition)
617
if self.last_checker_status == 0:
618
logger.info("Checker for %(name)s succeeded",
395
exitstatus = os.WEXITSTATUS(condition)
396
if exitstatus == 0:
397
logger.info(u"Checker for %(name)s succeeded",
619
398
vars(self))
620
399
self.checked_ok()
621
400
else:
622
logger.info("Checker for %(name)s failed",
401
logger.info(u"Checker for %(name)s failed",
623
402
vars(self))
624
403
else:
625
self.last_checker_status = -1
626
logger.warning("Checker for %(name)s crashed?",
404
logger.warning(u"Checker for %(name)s crashed?",
627
405
vars(self))
628
406
629
407
def checked_ok(self):
630
"""Assert that the client has been seen, alive and well."""
408
"""Bump up the timeout for this client.
409
410
This should only be called when the client has been seen,
411
alive and well.
412
"""
631
413
self.last_checked_ok = datetime.datetime.utcnow()
632
self.last_checker_status = 0
633
self.bump_timeout()
634
635
def bump_timeout(self, timeout=None):
636
"""Bump up the timeout for this client."""
637
if timeout is None:
638
timeout = self.timeout
639
if self.disable_initiator_tag is not None:
640
gobject.source_remove(self.disable_initiator_tag)
641
if getattr(self, "enabled", False):
642
self.disable_initiator_tag = (gobject.timeout_add
643
(timedelta_to_milliseconds
644
(timeout), self.disable))
645
self.expires = datetime.datetime.utcnow() + timeout
646
647
def need_approval(self):
648
self.last_approval_request = datetime.datetime.utcnow()
414
gobject.source_remove(self.disable_initiator_tag)
415
self.disable_initiator_tag = (gobject.timeout_add
416
(self.timeout_milliseconds(),
417
self.disable))
649
418
650
419
def start_checker(self):
651
420
"""Start a new checker subprocess if one is not running.
664
433
# If a checker exists, make sure it is not a zombie
665
434
try:
666
435
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
667
except (AttributeError, OSError) as error:
436
except (AttributeError, OSError), error:
668
437
if (isinstance(error, OSError)
669
438
and error.errno != errno.ECHILD):
670
439
raise error
671
440
else:
672
441
if pid:
673
logger.warning("Checker was a zombie")
442
logger.warning(u"Checker was a zombie")
674
443
gobject.source_remove(self.checker_callback_tag)
675
444
self.checker_callback(pid, status,
676
445
self.current_checker_command)
681
450
command = self.checker_command % self.host
682
451
except TypeError:
683
452
# Escape attributes for the shell
684
escaped_attrs = dict(
685
(attr,
686
re.escape(unicode(str(getattr(self, attr, "")),
687
errors=
688
'replace')))
689
for attr in
690
self.runtime_expansions)
691
453
escaped_attrs = dict((key,
454
re.escape(unicode(str(val),
455
errors=
456
u'replace')))
457
for key, val in
458
vars(self).iteritems())
692
459
try:
693
460
command = self.checker_command % escaped_attrs
694
except TypeError as error:
695
logger.error('Could not format string "%s":'
696
' %s', self.checker_command, error)
461
except TypeError, error:
462
logger.error(u'Could not format string "%s":'
463
u' %s', self.checker_command, error)
697
464
return True # Try again later
698
465
self.current_checker_command = command
699
466
try:
700
logger.info("Starting checker %r for %s",
467
logger.info(u"Starting checker %r for %s",
701
468
command, self.name)
702
469
# We don't need to redirect stdout and stderr, since
703
470
# in normal mode, that is already done by daemon(),
705
472
# always replaced by /dev/null.)
706
473
self.checker = subprocess.Popen(command,
707
474
close_fds=True,
708
shell=True, cwd="/")
475
shell=True, cwd=u"/")
709
476
self.checker_callback_tag = (gobject.child_watch_add
710
477
(self.checker.pid,
711
478
self.checker_callback,
716
483
if pid:
717
484
gobject.source_remove(self.checker_callback_tag)
718
485
self.checker_callback(pid, status, command)
719
except OSError as error:
720
logger.error("Failed to start subprocess: %s",
486
except OSError, error:
487
logger.error(u"Failed to start subprocess: %s",
721
488
error)
722
489
# Re-run this periodically if run by gobject.timeout_add
723
490
return True
727
494
if self.checker_callback_tag:
728
495
gobject.source_remove(self.checker_callback_tag)
729
496
self.checker_callback_tag = None
730
if getattr(self, "checker", None) is None:
497
if getattr(self, u"checker", None) is None:
731
498
return
732
logger.debug("Stopping checker for %(name)s", vars(self))
499
logger.debug(u"Stopping checker for %(name)s", vars(self))
733
500
try:
734
501
os.kill(self.checker.pid, signal.SIGTERM)
735
502
#time.sleep(0.5)
736
503
#if self.checker.poll() is None:
737
504
# os.kill(self.checker.pid, signal.SIGKILL)
738
except OSError as error:
505
except OSError, error:
739
506
if error.errno != errno.ESRCH: # No such process
740
507
raise
741
508
self.checker = None
742
509
743
744
def dbus_service_property(dbus_interface, signature="v",
745
access="readwrite", byte_arrays=False):
510
def dbus_service_property(dbus_interface, signature=u"v",
511
access=u"readwrite", byte_arrays=False):
746
512
"""Decorators for marking methods of a DBusObjectWithProperties to
747
513
become properties on the D-Bus.
748
514
755
521
"""
756
522
# Encoding deeply encoded byte arrays is not supported yet by the
757
523
# "Set" method, so we fail early here:
758
if byte_arrays and signature != "ay":
759
raise ValueError("Byte arrays not supported for non-'ay'"
760
" signature %r" % signature)
524
if byte_arrays and signature != u"ay":
525
raise ValueError(u"Byte arrays not supported for non-'ay'"
526
u" signature %r" % signature)
761
527
def decorator(func):
762
528
func._dbus_is_property = True
763
529
func._dbus_interface = dbus_interface
764
530
func._dbus_signature = signature
765
531
func._dbus_access = access
766
532
func._dbus_name = func.__name__
767
if func._dbus_name.endswith("_dbus_property"):
533
if func._dbus_name.endswith(u"_dbus_property"):
768
534
func._dbus_name = func._dbus_name[:-14]
769
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
535
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
770
536
return func
771
537
return decorator
772
538
792
558
793
559
class DBusObjectWithProperties(dbus.service.Object):
794
560
"""A D-Bus object with properties.
795
561
796
562
Classes inheriting from this can use the dbus_service_property
797
563
decorator to expose methods as D-Bus properties. It exposes the
798
564
standard Get(), Set(), and GetAll() methods on the D-Bus.
800
566
801
567
@staticmethod
802
568
def _is_dbus_property(obj):
803
return getattr(obj, "_dbus_is_property", False)
569
return getattr(obj, u"_dbus_is_property", False)
804
570
805
571
def _get_all_dbus_properties(self):
806
572
"""Returns a generator of (name, attribute) pairs
807
573
"""
808
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
809
for cls in self.__class__.__mro__
574
return ((prop._dbus_name, prop)
810
575
for name, prop in
811
inspect.getmembers(cls, self._is_dbus_property))
576
inspect.getmembers(self, self._is_dbus_property))
812
577
813
578
def _get_dbus_property(self, interface_name, property_name):
814
579
"""Returns a bound method if one exists which is a D-Bus
815
580
property with the specified name and interface.
816
581
"""
817
for cls in self.__class__.__mro__:
818
for name, value in (inspect.getmembers
819
(cls, self._is_dbus_property)):
820
if (value._dbus_name == property_name
821
and value._dbus_interface == interface_name):
822
return value.__get__(self)
823
582
for name in (property_name,
583
property_name + u"_dbus_property"):
584
prop = getattr(self, name, None)
585
if (prop is None
586
or not self._is_dbus_property(prop)
587
or prop._dbus_name != property_name
588
or (interface_name and prop._dbus_interface
589
and interface_name != prop._dbus_interface)):
590
continue
591
return prop
824
592
# No such property
825
raise DBusPropertyNotFound(self.dbus_object_path + ":"
826
+ interface_name + "."
593
raise DBusPropertyNotFound(self.dbus_object_path + u":"
594
+ interface_name + u"."
827
595
+ property_name)
828
596
829
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
830
out_signature="v")
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
598
out_signature=u"v")
831
599
def Get(self, interface_name, property_name):
832
600
"""Standard D-Bus property Get() method, see D-Bus standard.
833
601
"""
834
602
prop = self._get_dbus_property(interface_name, property_name)
835
if prop._dbus_access == "write":
603
if prop._dbus_access == u"write":
836
604
raise DBusPropertyAccessException(property_name)
837
605
value = prop()
838
if not hasattr(value, "variant_level"):
606
if not hasattr(value, u"variant_level"):
839
607
return value
840
608
return type(value)(value, variant_level=value.variant_level+1)
841
609
842
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
843
611
def Set(self, interface_name, property_name, value):
844
612
"""Standard D-Bus property Set() method, see D-Bus standard.
845
613
"""
846
614
prop = self._get_dbus_property(interface_name, property_name)
847
if prop._dbus_access == "read":
615
if prop._dbus_access == u"read":
848
616
raise DBusPropertyAccessException(property_name)
849
if prop._dbus_get_args_options["byte_arrays"]:
617
if prop._dbus_get_args_options[u"byte_arrays"]:
850
618
# The byte_arrays option is not supported yet on
851
619
# signatures other than "ay".
852
if prop._dbus_signature != "ay":
620
if prop._dbus_signature != u"ay":
853
621
raise ValueError
854
value = dbus.ByteArray(b''.join(chr(byte)
855
for byte in value))
622
value = dbus.ByteArray(''.join(unichr(byte)
623
for byte in value))
856
624
prop(value)
857
625
858
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
859
out_signature="a{sv}")
626
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
627
out_signature=u"a{sv}")
860
628
def GetAll(self, interface_name):
861
629
"""Standard D-Bus property GetAll() method, see D-Bus
862
630
standard.
863
631
864
632
Note: Will not include properties with access="write".
865
633
"""
866
properties = {}
634
all = {}
867
635
for name, prop in self._get_all_dbus_properties():
868
636
if (interface_name
869
637
and interface_name != prop._dbus_interface):
870
638
# Interface non-empty but did not match
871
639
continue
872
640
# Ignore write-only properties
873
if prop._dbus_access == "write":
641
if prop._dbus_access == u"write":
874
642
continue
875
643
value = prop()
876
if not hasattr(value, "variant_level"):
877
properties[name] = value
644
if not hasattr(value, u"variant_level"):
645
all[name] = value
878
646
continue
879
properties[name] = type(value)(value, variant_level=
880
value.variant_level+1)
881
return dbus.Dictionary(properties, signature="sv")
647
all[name] = type(value)(value, variant_level=
648
value.variant_level+1)
649
return dbus.Dictionary(all, signature=u"sv")
882
650
883
651
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
884
out_signature="s",
652
out_signature=u"s",
885
653
path_keyword='object_path',
886
654
connection_keyword='connection')
887
655
def Introspect(self, object_path, connection):
892
660
try:
893
661
document = xml.dom.minidom.parseString(xmlstring)
894
662
def make_tag(document, name, prop):
895
e = document.createElement("property")
896
e.setAttribute("name", name)
897
e.setAttribute("type", prop._dbus_signature)
898
e.setAttribute("access", prop._dbus_access)
663
e = document.createElement(u"property")
664
e.setAttribute(u"name", name)
665
e.setAttribute(u"type", prop._dbus_signature)
666
e.setAttribute(u"access", prop._dbus_access)
899
667
return e
900
for if_tag in document.getElementsByTagName("interface"):
668
for if_tag in document.getElementsByTagName(u"interface"):
901
669
for tag in (make_tag(document, name, prop)
902
670
for name, prop
903
671
in self._get_all_dbus_properties()
904
672
if prop._dbus_interface
905
== if_tag.getAttribute("name")):
673
== if_tag.getAttribute(u"name")):
906
674
if_tag.appendChild(tag)
907
675
# Add the names to the return values for the
908
676
# "org.freedesktop.DBus.Properties" methods
909
if (if_tag.getAttribute("name")
910
== "org.freedesktop.DBus.Properties"):
911
for cn in if_tag.getElementsByTagName("method"):
912
if cn.getAttribute("name") == "Get":
913
for arg in cn.getElementsByTagName("arg"):
914
if (arg.getAttribute("direction")
915
== "out"):
916
arg.setAttribute("name", "value")
917
elif cn.getAttribute("name") == "GetAll":
918
for arg in cn.getElementsByTagName("arg"):
919
if (arg.getAttribute("direction")
920
== "out"):
921
arg.setAttribute("name", "props")
922
xmlstring = document.toxml("utf-8")
677
if (if_tag.getAttribute(u"name")
678
== u"org.freedesktop.DBus.Properties"):
679
for cn in if_tag.getElementsByTagName(u"method"):
680
if cn.getAttribute(u"name") == u"Get":
681
for arg in cn.getElementsByTagName(u"arg"):
682
if (arg.getAttribute(u"direction")
683
== u"out"):
684
arg.setAttribute(u"name", u"value")
685
elif cn.getAttribute(u"name") == u"GetAll":
686
for arg in cn.getElementsByTagName(u"arg"):
687
if (arg.getAttribute(u"direction")
688
== u"out"):
689
arg.setAttribute(u"name", u"props")
690
xmlstring = document.toxml(u"utf-8")
923
691
document.unlink()
924
692
except (AttributeError, xml.dom.DOMException,
925
xml.parsers.expat.ExpatError) as error:
926
logger.error("Failed to override Introspection method",
693
xml.parsers.expat.ExpatError), error:
694
logger.error(u"Failed to override Introspection method",
927
695
error)
928
696
return xmlstring
929
697
930
698
931
def datetime_to_dbus (dt, variant_level=0):
932
"""Convert a UTC datetime.datetime() to a D-Bus type."""
933
if dt is None:
934
return dbus.String("", variant_level = variant_level)
935
return dbus.String(dt.isoformat(),
936
variant_level=variant_level)
937
938
939
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
940
.__metaclass__):
941
"""Applied to an empty subclass of a D-Bus object, this metaclass
942
will add additional D-Bus attributes matching a certain pattern.
943
"""
944
def __new__(mcs, name, bases, attr):
945
# Go through all the base classes which could have D-Bus
946
# methods, signals, or properties in them
947
for base in (b for b in bases
948
if issubclass(b, dbus.service.Object)):
949
# Go though all attributes of the base class
950
for attrname, attribute in inspect.getmembers(base):
951
# Ignore non-D-Bus attributes, and D-Bus attributes
952
# with the wrong interface name
953
if (not hasattr(attribute, "_dbus_interface")
954
or not attribute._dbus_interface
955
.startswith("se.recompile.Mandos")):
956
continue
957
# Create an alternate D-Bus interface name based on
958
# the current name
959
alt_interface = (attribute._dbus_interface
960
.replace("se.recompile.Mandos",
961
"se.bsnet.fukt.Mandos"))
962
# Is this a D-Bus signal?
963
if getattr(attribute, "_dbus_is_signal", False):
964
# Extract the original non-method function by
965
# black magic
966
nonmethod_func = (dict(
967
zip(attribute.func_code.co_freevars,
968
attribute.__closure__))["func"]
969
.cell_contents)
970
# Create a new, but exactly alike, function
971
# object, and decorate it to be a new D-Bus signal
972
# with the alternate D-Bus interface name
973
new_function = (dbus.service.signal
974
(alt_interface,
975
attribute._dbus_signature)
976
(types.FunctionType(
977
nonmethod_func.func_code,
978
nonmethod_func.func_globals,
979
nonmethod_func.func_name,
980
nonmethod_func.func_defaults,
981
nonmethod_func.func_closure)))
982
# Define a creator of a function to call both the
983
# old and new functions, so both the old and new
984
# signals gets sent when the function is called
985
def fixscope(func1, func2):
986
"""This function is a scope container to pass
987
func1 and func2 to the "call_both" function
988
outside of its arguments"""
989
def call_both(*args, **kwargs):
990
"""This function will emit two D-Bus
991
signals by calling func1 and func2"""
992
func1(*args, **kwargs)
993
func2(*args, **kwargs)
994
return call_both
995
# Create the "call_both" function and add it to
996
# the class
997
attr[attrname] = fixscope(attribute,
998
new_function)
999
# Is this a D-Bus method?
1000
elif getattr(attribute, "_dbus_is_method", False):
1001
# Create a new, but exactly alike, function
1002
# object. Decorate it to be a new D-Bus method
1003
# with the alternate D-Bus interface name. Add it
1004
# to the class.
1005
attr[attrname] = (dbus.service.method
1006
(alt_interface,
1007
attribute._dbus_in_signature,
1008
attribute._dbus_out_signature)
1009
(types.FunctionType
1010
(attribute.func_code,
1011
attribute.func_globals,
1012
attribute.func_name,
1013
attribute.func_defaults,
1014
attribute.func_closure)))
1015
# Is this a D-Bus property?
1016
elif getattr(attribute, "_dbus_is_property", False):
1017
# Create a new, but exactly alike, function
1018
# object, and decorate it to be a new D-Bus
1019
# property with the alternate D-Bus interface
1020
# name. Add it to the class.
1021
attr[attrname] = (dbus_service_property
1022
(alt_interface,
1023
attribute._dbus_signature,
1024
attribute._dbus_access,
1025
attribute
1026
._dbus_get_args_options
1027
["byte_arrays"])
1028
(types.FunctionType
1029
(attribute.func_code,
1030
attribute.func_globals,
1031
attribute.func_name,
1032
attribute.func_defaults,
1033
attribute.func_closure)))
1034
return type.__new__(mcs, name, bases, attr)
1035
1036
1037
699
class ClientDBus(Client, DBusObjectWithProperties):
1038
700
"""A Client class using D-Bus
1039
701
1041
703
dbus_object_path: dbus.ObjectPath
1042
704
bus: dbus.SystemBus()
1043
705
"""
1044
1045
runtime_expansions = (Client.runtime_expansions
1046
+ ("dbus_object_path",))
1047
1048
706
# dbus.service.Object doesn't use super(), so we can't either.
1049
707
1050
708
def __init__(self, bus = None, *args, **kwargs):
709
self._approvals_pending = 0
1051
710
self.bus = bus
1052
711
Client.__init__(self, *args, **kwargs)
1053
712
# Only now, when this client is initialized, can it show up on
1054
713
# the D-Bus
1055
client_object_name = unicode(self.name).translate(
1056
{ord("."): ord("_"),
1057
ord("-"): ord("_")})
1058
714
self.dbus_object_path = (dbus.ObjectPath
1059
("/clients/" + client_object_name))
715
(u"/clients/"
716
+ self.name.replace(u".", u"_")))
1060
717
DBusObjectWithProperties.__init__(self, self.bus,
1061
718
self.dbus_object_path)
1062
719
1063
def notifychangeproperty(transform_func,
1064
dbus_name, type_func=lambda x: x,
1065
variant_level=1):
1066
""" Modify a variable so that it's a property which announces
1067
its changes to DBus.
1068
1069
transform_fun: Function that takes a value and a variant_level
1070
and transforms it to a D-Bus type.
1071
dbus_name: D-Bus name of the variable
1072
type_func: Function that transform the value before sending it
1073
to the D-Bus. Default: no transform
1074
variant_level: D-Bus variant level. Default: 1
1075
"""
1076
attrname = "_{0}".format(dbus_name)
1077
def setter(self, value):
1078
if hasattr(self, "dbus_object_path"):
1079
if (not hasattr(self, attrname) or
1080
type_func(getattr(self, attrname, None))
1081
!= type_func(value)):
1082
dbus_value = transform_func(type_func(value),
1083
variant_level
1084
=variant_level)
1085
self.PropertyChanged(dbus.String(dbus_name),
1086
dbus_value)
1087
setattr(self, attrname, value)
1088
1089
return property(lambda self: getattr(self, attrname), setter)
1090
1091
1092
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1093
approvals_pending = notifychangeproperty(dbus.Boolean,
1094
"ApprovalPending",
1095
type_func = bool)
1096
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1097
last_enabled = notifychangeproperty(datetime_to_dbus,
1098
"LastEnabled")
1099
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1100
type_func = lambda checker:
1101
checker is not None)
1102
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1103
"LastCheckedOK")
1104
last_checker_status = notifychangeproperty(dbus.Int16,
1105
"LastCheckerStatus")
1106
last_approval_request = notifychangeproperty(
1107
datetime_to_dbus, "LastApprovalRequest")
1108
approved_by_default = notifychangeproperty(dbus.Boolean,
1109
"ApprovedByDefault")
1110
approval_delay = notifychangeproperty(dbus.UInt64,
1111
"ApprovalDelay",
1112
type_func =
1113
timedelta_to_milliseconds)
1114
approval_duration = notifychangeproperty(
1115
dbus.UInt64, "ApprovalDuration",
1116
type_func = timedelta_to_milliseconds)
1117
host = notifychangeproperty(dbus.String, "Host")
1118
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1119
type_func =
1120
timedelta_to_milliseconds)
1121
extended_timeout = notifychangeproperty(
1122
dbus.UInt64, "ExtendedTimeout",
1123
type_func = timedelta_to_milliseconds)
1124
interval = notifychangeproperty(dbus.UInt64,
1125
"Interval",
1126
type_func =
1127
timedelta_to_milliseconds)
1128
checker_command = notifychangeproperty(dbus.String, "Checker")
1129
1130
del notifychangeproperty
720
def _get_approvals_pending(self):
721
return self._approvals_pending
722
def _set_approvals_pending(self, value):
723
old_value = self._approvals_pending
724
self._approvals_pending = value
725
bval = bool(value)
726
if (hasattr(self, "dbus_object_path")
727
and bval is not bool(old_value)):
728
dbus_bool = dbus.Boolean(bval, variant_level=1)
729
self.PropertyChanged(dbus.String(u"ApprovalPending"),
730
dbus_bool)
731
732
approvals_pending = property(_get_approvals_pending,
733
_set_approvals_pending)
734
del _get_approvals_pending, _set_approvals_pending
735
736
@staticmethod
737
def _datetime_to_dbus(dt, variant_level=0):
738
"""Convert a UTC datetime.datetime() to a D-Bus type."""
739
return dbus.String(dt.isoformat(),
740
variant_level=variant_level)
741
742
def enable(self):
743
oldstate = getattr(self, u"enabled", False)
744
r = Client.enable(self)
745
if oldstate != self.enabled:
746
# Emit D-Bus signals
747
self.PropertyChanged(dbus.String(u"Enabled"),
748
dbus.Boolean(True, variant_level=1))
749
self.PropertyChanged(
750
dbus.String(u"LastEnabled"),
751
self._datetime_to_dbus(self.last_enabled,
752
variant_level=1))
753
return r
754
755
def disable(self, quiet = False):
756
oldstate = getattr(self, u"enabled", False)
757
r = Client.disable(self, quiet=quiet)
758
if not quiet and oldstate != self.enabled:
759
# Emit D-Bus signal
760
self.PropertyChanged(dbus.String(u"Enabled"),
761
dbus.Boolean(False, variant_level=1))
762
return r
1131
763
1132
764
def __del__(self, *args, **kwargs):
1133
765
try:
1134
766
self.remove_from_connection()
1135
767
except LookupError:
1136
768
pass
1137
if hasattr(DBusObjectWithProperties, "__del__"):
769
if hasattr(DBusObjectWithProperties, u"__del__"):
1138
770
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1139
771
Client.__del__(self, *args, **kwargs)
1140
772
1142
774
*args, **kwargs):
1143
775
self.checker_callback_tag = None
1144
776
self.checker = None
777
# Emit D-Bus signal
778
self.PropertyChanged(dbus.String(u"CheckerRunning"),
779
dbus.Boolean(False, variant_level=1))
1145
780
if os.WIFEXITED(condition):
1146
781
exitstatus = os.WEXITSTATUS(condition)
1147
782
# Emit D-Bus signal
1157
792
return Client.checker_callback(self, pid, condition, command,
1158
793
*args, **kwargs)
1159
794
795
def checked_ok(self, *args, **kwargs):
796
r = Client.checked_ok(self, *args, **kwargs)
797
# Emit D-Bus signal
798
self.PropertyChanged(
799
dbus.String(u"LastCheckedOK"),
800
(self._datetime_to_dbus(self.last_checked_ok,
801
variant_level=1)))
802
return r
803
1160
804
def start_checker(self, *args, **kwargs):
1161
805
old_checker = self.checker
1162
806
if self.checker is not None:
1169
813
and old_checker_pid != self.checker.pid):
1170
814
# Emit D-Bus signal
1171
815
self.CheckerStarted(self.current_checker_command)
816
self.PropertyChanged(
817
dbus.String(u"CheckerRunning"),
818
dbus.Boolean(True, variant_level=1))
1172
819
return r
1173
820
821
def stop_checker(self, *args, **kwargs):
822
old_checker = getattr(self, u"checker", None)
823
r = Client.stop_checker(self, *args, **kwargs)
824
if (old_checker is not None
825
and getattr(self, u"checker", None) is None):
826
self.PropertyChanged(dbus.String(u"CheckerRunning"),
827
dbus.Boolean(False, variant_level=1))
828
return r
829
1174
830
def _reset_approved(self):
1175
self.approved = None
831
self._approved = None
1176
832
return False
1177
833
1178
834
def approve(self, value=True):
1179
835
self.send_changedstate()
1180
self.approved = value
1181
gobject.timeout_add(timedelta_to_milliseconds
836
self._approved = value
837
gobject.timeout_add(self._timedelta_to_milliseconds
1182
838
(self.approval_duration),
1183
839
self._reset_approved)
1184
840
1185
841
1186
842
## D-Bus methods, signals & properties
1187
_interface = "se.recompile.Mandos.Client"
843
_interface = u"se.bsnet.fukt.Mandos.Client"
1188
844
1189
845
## Signals
1190
846
1191
847
# CheckerCompleted - signal
1192
@dbus.service.signal(_interface, signature="nxs")
848
@dbus.service.signal(_interface, signature=u"nxs")
1193
849
def CheckerCompleted(self, exitcode, waitstatus, command):
1194
850
"D-Bus signal"
1195
851
pass
1196
852
1197
853
# CheckerStarted - signal
1198
@dbus.service.signal(_interface, signature="s")
854
@dbus.service.signal(_interface, signature=u"s")
1199
855
def CheckerStarted(self, command):
1200
856
"D-Bus signal"
1201
857
pass
1202
858
1203
859
# PropertyChanged - signal
1204
@dbus.service.signal(_interface, signature="sv")
860
@dbus.service.signal(_interface, signature=u"sv")
1205
861
def PropertyChanged(self, property, value):
1206
862
"D-Bus signal"
1207
863
pass
1216
872
pass
1217
873
1218
874
# Rejected - signal
1219
@dbus.service.signal(_interface, signature="s")
875
@dbus.service.signal(_interface, signature=u"s")
1220
876
def Rejected(self, reason):
1221
877
"D-Bus signal"
1222
878
pass
1223
879
1224
880
# NeedApproval - signal
1225
@dbus.service.signal(_interface, signature="tb")
881
@dbus.service.signal(_interface, signature=u"tb")
1226
882
def NeedApproval(self, timeout, default):
1227
883
"D-Bus signal"
1228
return self.need_approval()
884
pass
1229
885
1230
886
## Methods
1231
887
1232
888
# Approve - method
1233
@dbus.service.method(_interface, in_signature="b")
889
@dbus.service.method(_interface, in_signature=u"b")
1234
890
def Approve(self, value):
1235
891
self.approve(value)
1236
892
1237
893
# CheckedOK - method
1238
894
@dbus.service.method(_interface)
1239
895
def CheckedOK(self):
1240
self.checked_ok()
896
return self.checked_ok()
1241
897
1242
898
# Enable - method
1243
899
@dbus.service.method(_interface)
1265
921
## Properties
1266
922
1267
923
# ApprovalPending - property
1268
@dbus_service_property(_interface, signature="b", access="read")
924
@dbus_service_property(_interface, signature=u"b", access=u"read")
1269
925
def ApprovalPending_dbus_property(self):
1270
926
return dbus.Boolean(bool(self.approvals_pending))
1271
927
1272
928
# ApprovedByDefault - property
1273
@dbus_service_property(_interface, signature="b",
1274
access="readwrite")
929
@dbus_service_property(_interface, signature=u"b",
930
access=u"readwrite")
1275
931
def ApprovedByDefault_dbus_property(self, value=None):
1276
932
if value is None: # get
1277
933
return dbus.Boolean(self.approved_by_default)
1278
934
self.approved_by_default = bool(value)
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
937
dbus.Boolean(value, variant_level=1))
1279
938
1280
939
# ApprovalDelay - property
1281
@dbus_service_property(_interface, signature="t",
1282
access="readwrite")
940
@dbus_service_property(_interface, signature=u"t",
941
access=u"readwrite")
1283
942
def ApprovalDelay_dbus_property(self, value=None):
1284
943
if value is None: # get
1285
944
return dbus.UInt64(self.approval_delay_milliseconds())
1286
945
self.approval_delay = datetime.timedelta(0, 0, 0, value)
946
# Emit D-Bus signal
947
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
948
dbus.UInt64(value, variant_level=1))
1287
949
1288
950
# ApprovalDuration - property
1289
@dbus_service_property(_interface, signature="t",
1290
access="readwrite")
951
@dbus_service_property(_interface, signature=u"t",
952
access=u"readwrite")
1291
953
def ApprovalDuration_dbus_property(self, value=None):
1292
954
if value is None: # get
1293
return dbus.UInt64(timedelta_to_milliseconds(
955
return dbus.UInt64(self._timedelta_to_milliseconds(
1294
956
self.approval_duration))
1295
957
self.approval_duration = datetime.timedelta(0, 0, 0, value)
958
# Emit D-Bus signal
959
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
960
dbus.UInt64(value, variant_level=1))
1296
961
1297
962
# Name - property
1298
@dbus_service_property(_interface, signature="s", access="read")
963
@dbus_service_property(_interface, signature=u"s", access=u"read")
1299
964
def Name_dbus_property(self):
1300
965
return dbus.String(self.name)
1301
966
1302
967
# Fingerprint - property
1303
@dbus_service_property(_interface, signature="s", access="read")
968
@dbus_service_property(_interface, signature=u"s", access=u"read")
1304
969
def Fingerprint_dbus_property(self):
1305
970
return dbus.String(self.fingerprint)
1306
971
1307
972
# Host - property
1308
@dbus_service_property(_interface, signature="s",
1309
access="readwrite")
973
@dbus_service_property(_interface, signature=u"s",
974
access=u"readwrite")
1310
975
def Host_dbus_property(self, value=None):
1311
976
if value is None: # get
1312
977
return dbus.String(self.host)
1313
self.host = unicode(value)
978
self.host = value
979
# Emit D-Bus signal
980
self.PropertyChanged(dbus.String(u"Host"),
981
dbus.String(value, variant_level=1))
1314
982
1315
983
# Created - property
1316
@dbus_service_property(_interface, signature="s", access="read")
984
@dbus_service_property(_interface, signature=u"s", access=u"read")
1317
985
def Created_dbus_property(self):
1318
return datetime_to_dbus(self.created)
986
return dbus.String(self._datetime_to_dbus(self.created))
1319
987
1320
988
# LastEnabled - property
1321
@dbus_service_property(_interface, signature="s", access="read")
989
@dbus_service_property(_interface, signature=u"s", access=u"read")
1322
990
def LastEnabled_dbus_property(self):
1323
return datetime_to_dbus(self.last_enabled)
991
if self.last_enabled is None:
992
return dbus.String(u"")
993
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1324
994
1325
995
# Enabled - property
1326
@dbus_service_property(_interface, signature="b",
1327
access="readwrite")
996
@dbus_service_property(_interface, signature=u"b",
997
access=u"readwrite")
1328
998
def Enabled_dbus_property(self, value=None):
1329
999
if value is None: # get
1330
1000
return dbus.Boolean(self.enabled)
1334
1004
self.disable()
1335
1005
1336
1006
# LastCheckedOK - property
1337
@dbus_service_property(_interface, signature="s",
1338
access="readwrite")
1007
@dbus_service_property(_interface, signature=u"s",
1008
access=u"readwrite")
1339
1009
def LastCheckedOK_dbus_property(self, value=None):
1340
1010
if value is not None:
1341
1011
self.checked_ok()
1342
1012
return
1343
return datetime_to_dbus(self.last_checked_ok)
1344
1345
# LastCheckerStatus - property
1346
@dbus_service_property(_interface, signature="n",
1347
access="read")
1348
def LastCheckerStatus_dbus_property(self):
1349
return dbus.Int16(self.last_checker_status)
1350
1351
# Expires - property
1352
@dbus_service_property(_interface, signature="s", access="read")
1353
def Expires_dbus_property(self):
1354
return datetime_to_dbus(self.expires)
1355
1356
# LastApprovalRequest - property
1357
@dbus_service_property(_interface, signature="s", access="read")
1358
def LastApprovalRequest_dbus_property(self):
1359
return datetime_to_dbus(self.last_approval_request)
1013
if self.last_checked_ok is None:
1014
return dbus.String(u"")
1015
return dbus.String(self._datetime_to_dbus(self
1016
.last_checked_ok))
1360
1017
1361
1018
# Timeout - property
1362
@dbus_service_property(_interface, signature="t",
1363
access="readwrite")
1019
@dbus_service_property(_interface, signature=u"t",
1020
access=u"readwrite")
1364
1021
def Timeout_dbus_property(self, value=None):
1365
1022
if value is None: # get
1366
1023
return dbus.UInt64(self.timeout_milliseconds())
1367
1024
self.timeout = datetime.timedelta(0, 0, 0, value)
1025
# Emit D-Bus signal
1026
self.PropertyChanged(dbus.String(u"Timeout"),
1027
dbus.UInt64(value, variant_level=1))
1028
if getattr(self, u"disable_initiator_tag", None) is None:
1029
return
1368
1030
# Reschedule timeout
1369
if self.enabled:
1370
now = datetime.datetime.utcnow()
1371
time_to_die = timedelta_to_milliseconds(
1372
(self.last_checked_ok + self.timeout) - now)
1373
if time_to_die <= 0:
1374
# The timeout has passed
1375
self.disable()
1376
else:
1377
self.expires = (now +
1378
datetime.timedelta(milliseconds =
1379
time_to_die))
1380
if (getattr(self, "disable_initiator_tag", None)
1381
is None):
1382
return
1383
gobject.source_remove(self.disable_initiator_tag)
1384
self.disable_initiator_tag = (gobject.timeout_add
1385
(time_to_die,
1386
self.disable))
1387
1388
# ExtendedTimeout - property
1389
@dbus_service_property(_interface, signature="t",
1390
access="readwrite")
1391
def ExtendedTimeout_dbus_property(self, value=None):
1392
if value is None: # get
1393
return dbus.UInt64(self.extended_timeout_milliseconds())
1394
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1031
gobject.source_remove(self.disable_initiator_tag)
1032
self.disable_initiator_tag = None
1033
time_to_die = (self.
1034
_timedelta_to_milliseconds((self
1035
.last_checked_ok
1036
+ self.timeout)
1037
- datetime.datetime
1038
.utcnow()))
1039
if time_to_die <= 0:
1040
# The timeout has passed
1041
self.disable()
1042
else:
1043
self.disable_initiator_tag = (gobject.timeout_add
1044
(time_to_die, self.disable))
1395
1045
1396
1046
# Interval - property
1397
@dbus_service_property(_interface, signature="t",
1398
access="readwrite")
1047
@dbus_service_property(_interface, signature=u"t",
1048
access=u"readwrite")
1399
1049
def Interval_dbus_property(self, value=None):
1400
1050
if value is None: # get
1401
1051
return dbus.UInt64(self.interval_milliseconds())
1402
1052
self.interval = datetime.timedelta(0, 0, 0, value)
1403
if getattr(self, "checker_initiator_tag", None) is None:
1053
# Emit D-Bus signal
1054
self.PropertyChanged(dbus.String(u"Interval"),
1055
dbus.UInt64(value, variant_level=1))
1056
if getattr(self, u"checker_initiator_tag", None) is None:
1404
1057
return
1405
if self.enabled:
1406
# Reschedule checker run
1407
gobject.source_remove(self.checker_initiator_tag)
1408
self.checker_initiator_tag = (gobject.timeout_add
1409
(value, self.start_checker))
1410
self.start_checker() # Start one now, too
1411
1058
# Reschedule checker run
1059
gobject.source_remove(self.checker_initiator_tag)
1060
self.checker_initiator_tag = (gobject.timeout_add
1061
(value, self.start_checker))
1062
self.start_checker() # Start one now, too
1063
1412
1064
# Checker - property
1413
@dbus_service_property(_interface, signature="s",
1414
access="readwrite")
1065
@dbus_service_property(_interface, signature=u"s",
1066
access=u"readwrite")
1415
1067
def Checker_dbus_property(self, value=None):
1416
1068
if value is None: # get
1417
1069
return dbus.String(self.checker_command)
1418
self.checker_command = unicode(value)
1070
self.checker_command = value
1071
# Emit D-Bus signal
1072
self.PropertyChanged(dbus.String(u"Checker"),
1073
dbus.String(self.checker_command,
1074
variant_level=1))
1419
1075
1420
1076
# CheckerRunning - property
1421
@dbus_service_property(_interface, signature="b",
1422
access="readwrite")
1077
@dbus_service_property(_interface, signature=u"b",
1078
access=u"readwrite")
1423
1079
def CheckerRunning_dbus_property(self, value=None):
1424
1080
if value is None: # get
1425
1081
return dbus.Boolean(self.checker is not None)
1429
1085
self.stop_checker()
1430
1086
1431
1087
# ObjectPath - property
1432
@dbus_service_property(_interface, signature="o", access="read")
1088
@dbus_service_property(_interface, signature=u"o", access=u"read")
1433
1089
def ObjectPath_dbus_property(self):
1434
1090
return self.dbus_object_path # is already a dbus.ObjectPath
1435
1091
1436
1092
# Secret = property
1437
@dbus_service_property(_interface, signature="ay",
1438
access="write", byte_arrays=True)
1093
@dbus_service_property(_interface, signature=u"ay",
1094
access=u"write", byte_arrays=True)
1439
1095
def Secret_dbus_property(self, value):
1440
1096
self.secret = str(value)
1441
1097
1448
1104
self._pipe.send(('init', fpr, address))
1449
1105
if not self._pipe.recv():
1450
1106
raise KeyError()
1451
1107
1452
1108
def __getattribute__(self, name):
1453
if name == '_pipe':
1109
if(name == '_pipe'):
1454
1110
return super(ProxyClient, self).__getattribute__(name)
1455
1111
self._pipe.send(('getattr', name))
1456
1112
data = self._pipe.recv()
1461
1117
self._pipe.send(('funcall', name, args, kwargs))
1462
1118
return self._pipe.recv()[1]
1463
1119
return func
1464
1120
1465
1121
def __setattr__(self, name, value):
1466
if name == '_pipe':
1122
if(name == '_pipe'):
1467
1123
return super(ProxyClient, self).__setattr__(name, value)
1468
1124
self._pipe.send(('setattr', name, value))
1469
1125
1470
1126
1471
class ClientDBusTransitional(ClientDBus):
1472
__metaclass__ = AlternateDBusNamesMetaclass
1473
1474
1475
1127
class ClientHandler(socketserver.BaseRequestHandler, object):
1476
1128
"""A class to handle client connections.
1477
1129
1480
1132
1481
1133
def handle(self):
1482
1134
with contextlib.closing(self.server.child_pipe) as child_pipe:
1483
logger.info("TCP connection from: %s",
1135
logger.info(u"TCP connection from: %s",
1484
1136
unicode(self.client_address))
1485
logger.debug("Pipe FD: %d",
1137
logger.debug(u"Pipe FD: %d",
1486
1138
self.server.child_pipe.fileno())
1487
1139
1488
1140
session = (gnutls.connection
1489
1141
.ClientSession(self.request,
1490
1142
gnutls.connection
1491
1143
.X509Credentials()))
1492
1144
1493
1145
# Note: gnutls.connection.X509Credentials is really a
1494
1146
# generic GnuTLS certificate credentials object so long as
1495
1147
# no X.509 keys are added to it. Therefore, we can use it
1496
1148
# here despite using OpenPGP certificates.
1497
1498
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1499
# "+AES-256-CBC", "+SHA1",
1500
# "+COMP-NULL", "+CTYPE-OPENPGP",
1501
# "+DHE-DSS"))
1149
1150
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1151
# u"+AES-256-CBC", u"+SHA1",
1152
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1153
# u"+DHE-DSS"))
1502
1154
# Use a fallback default, since this MUST be set.
1503
1155
priority = self.server.gnutls_priority
1504
1156
if priority is None:
1505
priority = "NORMAL"
1157
priority = u"NORMAL"
1506
1158
(gnutls.library.functions
1507
1159
.gnutls_priority_set_direct(session._c_object,
1508
1160
priority, None))
1509
1161
1510
1162
# Start communication using the Mandos protocol
1511
1163
# Get protocol number
1512
1164
line = self.request.makefile().readline()
1513
logger.debug("Protocol version: %r", line)
1165
logger.debug(u"Protocol version: %r", line)
1514
1166
try:
1515
1167
if int(line.strip().split()[0]) > 1:
1516
1168
raise RuntimeError
1517
except (ValueError, IndexError, RuntimeError) as error:
1518
logger.error("Unknown protocol version: %s", error)
1169
except (ValueError, IndexError, RuntimeError), error:
1170
logger.error(u"Unknown protocol version: %s", error)
1519
1171
return
1520
1172
1521
1173
# Start GnuTLS connection
1522
1174
try:
1523
1175
session.handshake()
1524
except gnutls.errors.GNUTLSError as error:
1525
logger.warning("Handshake failed: %s", error)
1176
except gnutls.errors.GNUTLSError, error:
1177
logger.warning(u"Handshake failed: %s", error)
1526
1178
# Do not run session.bye() here: the session is not
1527
1179
# established. Just abandon the request.
1528
1180
return
1529
logger.debug("Handshake succeeded")
1530
1181
logger.debug(u"Handshake succeeded")
1182
1531
1183
approval_required = False
1532
1184
try:
1533
1185
try:
1534
1186
fpr = self.fingerprint(self.peer_certificate
1535
1187
(session))
1536
except (TypeError,
1537
gnutls.errors.GNUTLSError) as error:
1538
logger.warning("Bad certificate: %s", error)
1188
except (TypeError, gnutls.errors.GNUTLSError), error:
1189
logger.warning(u"Bad certificate: %s", error)
1539
1190
return
1540
logger.debug("Fingerprint: %s", fpr)
1541
1191
logger.debug(u"Fingerprint: %s", fpr)
1192
1542
1193
try:
1543
1194
client = ProxyClient(child_pipe, fpr,
1544
1195
self.client_address)
1552
1203
1553
1204
while True:
1554
1205
if not client.enabled:
1555
logger.info("Client %s is disabled",
1206
logger.warning(u"Client %s is disabled",
1556
1207
client.name)
1557
1208
if self.server.use_dbus:
1558
1209
# Emit D-Bus signal
1559
client.Rejected("Disabled")
1210
client.Rejected("Disabled")
1560
1211
return
1561
1212
1562
if client.approved or not client.approval_delay:
1213
if client._approved or not client.approval_delay:
1563
1214
#We are approved or approval is disabled
1564
1215
break
1565
elif client.approved is None:
1566
logger.info("Client %s needs approval",
1216
elif client._approved is None:
1217
logger.info(u"Client %s needs approval",
1567
1218
client.name)
1568
1219
if self.server.use_dbus:
1569
1220
# Emit D-Bus signal
1571
1222
client.approval_delay_milliseconds(),
1572
1223
client.approved_by_default)
1573
1224
else:
1574
logger.warning("Client %s was not approved",
1225
logger.warning(u"Client %s was not approved",
1575
1226
client.name)
1576
1227
if self.server.use_dbus:
1577
1228
# Emit D-Bus signal
1579
1230
return
1580
1231
1581
1232
#wait until timeout or approved
1233
#x = float(client._timedelta_to_milliseconds(delay))
1582
1234
time = datetime.datetime.now()
1583
1235
client.changedstate.acquire()
1584
(client.changedstate.wait
1585
(float(client.timedelta_to_milliseconds(delay)
1586
/ 1000)))
1236
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1587
1237
client.changedstate.release()
1588
1238
time2 = datetime.datetime.now()
1589
1239
if (time2 - time) >= delay:
1593
1243
client.name)
1594
1244
if self.server.use_dbus:
1595
1245
# Emit D-Bus signal
1596
client.Rejected("Approval timed out")
1246
client.Rejected("Timed out")
1597
1247
return
1598
1248
else:
1599
1249
break
1604
1254
while sent_size < len(client.secret):
1605
1255
try:
1606
1256
sent = session.send(client.secret[sent_size:])
1607
except gnutls.errors.GNUTLSError as error:
1257
except (gnutls.errors.GNUTLSError), error:
1608
1258
logger.warning("gnutls send failed")
1609
1259
return
1610
logger.debug("Sent: %d, remaining: %d",
1260
logger.debug(u"Sent: %d, remaining: %d",
1611
1261
sent, len(client.secret)
1612
1262
- (sent_size + sent))
1613
1263
sent_size += sent
1614
1615
logger.info("Sending secret to %s", client.name)
1616
# bump the timeout using extended_timeout
1617
client.bump_timeout(client.extended_timeout)
1264
1265
logger.info(u"Sending secret to %s", client.name)
1266
# bump the timeout as if seen
1267
client.checked_ok()
1618
1268
if self.server.use_dbus:
1619
1269
# Emit D-Bus signal
1620
1270
client.GotSecret()
1624
1274
client.approvals_pending -= 1
1625
1275
try:
1626
1276
session.bye()
1627
except gnutls.errors.GNUTLSError as error:
1277
except (gnutls.errors.GNUTLSError), error:
1628
1278
logger.warning("GnuTLS bye failed")
1629
1279
1630
1280
@staticmethod
1641
1291
.gnutls_certificate_get_peers
1642
1292
(session._c_object, ctypes.byref(list_size)))
1643
1293
if not bool(cert_list) and list_size.value != 0:
1644
raise gnutls.errors.GNUTLSError("error getting peer"
1645
" certificate")
1294
raise gnutls.errors.GNUTLSError(u"error getting peer"
1295
u" certificate")
1646
1296
if list_size.value == 0:
1647
1297
return None
1648
1298
cert = cert_list[0]
1674
1324
if crtverify.value != 0:
1675
1325
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1676
1326
raise (gnutls.errors.CertificateSecurityError
1677
("Verify failed"))
1327
(u"Verify failed"))
1678
1328
# New buffer for the fingerprint
1679
1329
buf = ctypes.create_string_buffer(20)
1680
1330
buf_len = ctypes.c_size_t()
1687
1337
# Convert the buffer to a Python bytestring
1688
1338
fpr = ctypes.string_at(buf, buf_len.value)
1689
1339
# Convert the bytestring to hexadecimal notation
1690
hex_fpr = binascii.hexlify(fpr).upper()
1340
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1691
1341
return hex_fpr
1692
1342
1693
1343
1696
1346
def sub_process_main(self, request, address):
1697
1347
try:
1698
1348
self.finish_request(request, address)
1699
except Exception:
1349
except:
1700
1350
self.handle_error(request, address)
1701
1351
self.close_request(request)
1702
1352
1703
1353
def process_request(self, request, address):
1704
1354
"""Start a new process to process the request."""
1705
proc = multiprocessing.Process(target = self.sub_process_main,
1706
args = (request,
1707
address))
1708
proc.start()
1709
return proc
1710
1355
multiprocessing.Process(target = self.sub_process_main,
1356
args = (request, address)).start()
1711
1357
1712
1358
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1713
1359
""" adds a pipe to the MixIn """
1717
1363
This function creates a new pipe in self.pipe
1718
1364
"""
1719
1365
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1720
1721
proc = MultiprocessingMixIn.process_request(self, request,
1722
client_address)
1366
1367
super(MultiprocessingMixInWithPipe,
1368
self).process_request(request, client_address)
1723
1369
self.child_pipe.close()
1724
self.add_pipe(parent_pipe, proc)
1725
1726
def add_pipe(self, parent_pipe, proc):
1370
self.add_pipe(parent_pipe)
1371
1372
def add_pipe(self, parent_pipe):
1727
1373
"""Dummy function; override as necessary"""
1728
raise NotImplementedError
1729
1374
pass
1730
1375
1731
1376
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1732
1377
socketserver.TCPServer, object):
1750
1395
bind to an address or port if they were not specified."""
1751
1396
if self.interface is not None:
1752
1397
if SO_BINDTODEVICE is None:
1753
logger.error("SO_BINDTODEVICE does not exist;"
1754
" cannot bind to interface %s",
1398
logger.error(u"SO_BINDTODEVICE does not exist;"
1399
u" cannot bind to interface %s",
1755
1400
self.interface)
1756
1401
else:
1757
1402
try:
1758
1403
self.socket.setsockopt(socket.SOL_SOCKET,
1759
1404
SO_BINDTODEVICE,
1760
1405
str(self.interface
1761
+ '\0'))
1762
except socket.error as error:
1406
+ u'\0'))
1407
except socket.error, error:
1763
1408
if error[0] == errno.EPERM:
1764
logger.error("No permission to"
1765
" bind to interface %s",
1409
logger.error(u"No permission to"
1410
u" bind to interface %s",
1766
1411
self.interface)
1767
1412
elif error[0] == errno.ENOPROTOOPT:
1768
logger.error("SO_BINDTODEVICE not available;"
1769
" cannot bind to interface %s",
1413
logger.error(u"SO_BINDTODEVICE not available;"
1414
u" cannot bind to interface %s",
1770
1415
self.interface)
1771
1416
else:
1772
1417
raise
1774
1419
if self.server_address[0] or self.server_address[1]:
1775
1420
if not self.server_address[0]:
1776
1421
if self.address_family == socket.AF_INET6:
1777
any_address = "::" # in6addr_any
1422
any_address = u"::" # in6addr_any
1778
1423
else:
1779
1424
any_address = socket.INADDR_ANY
1780
1425
self.server_address = (any_address,
1807
1452
self.enabled = False
1808
1453
self.clients = clients
1809
1454
if self.clients is None:
1810
self.clients = {}
1455
self.clients = set()
1811
1456
self.use_dbus = use_dbus
1812
1457
self.gnutls_priority = gnutls_priority
1813
1458
IPv6_TCPServer.__init__(self, server_address,
1817
1462
def server_activate(self):
1818
1463
if self.enabled:
1819
1464
return socketserver.TCPServer.server_activate(self)
1820
1821
1465
def enable(self):
1822
1466
self.enabled = True
1823
1824
def add_pipe(self, parent_pipe, proc):
1467
def add_pipe(self, parent_pipe):
1825
1468
# Call "handle_ipc" for both data and EOF events
1826
1469
gobject.io_add_watch(parent_pipe.fileno(),
1827
1470
gobject.IO_IN | gobject.IO_HUP,
1828
1471
functools.partial(self.handle_ipc,
1829
parent_pipe =
1830
parent_pipe,
1831
proc = proc))
1832
1472
parent_pipe = parent_pipe))
1473
1833
1474
def handle_ipc(self, source, condition, parent_pipe=None,
1834
proc = None, client_object=None):
1475
client_object=None):
1835
1476
condition_names = {
1836
gobject.IO_IN: "IN", # There is data to read.
1837
gobject.IO_OUT: "OUT", # Data can be written (without
1477
gobject.IO_IN: u"IN", # There is data to read.
1478
gobject.IO_OUT: u"OUT", # Data can be written (without
1838
1479
# blocking).
1839
gobject.IO_PRI: "PRI", # There is urgent data to read.
1840
gobject.IO_ERR: "ERR", # Error condition.
1841
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1480
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1481
gobject.IO_ERR: u"ERR", # Error condition.
1482
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1842
1483
# broken, usually for pipes and
1843
1484
# sockets).
1844
1485
}
1846
1487
for cond, name in
1847
1488
condition_names.iteritems()
1848
1489
if cond & condition)
1849
# error, or the other end of multiprocessing.Pipe has closed
1490
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1491
conditions_string)
1492
1493
# error or the other end of multiprocessing.Pipe has closed
1850
1494
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1851
# Wait for other process to exit
1852
proc.join()
1853
1495
return False
1854
1496
1855
1497
# Read a request from the child
1856
1498
request = parent_pipe.recv()
1499
logger.debug(u"IPC request: %s", repr(request))
1857
1500
command = request[0]
1858
1501
1859
1502
if command == 'init':
1860
1503
fpr = request[1]
1861
1504
address = request[2]
1862
1505
1863
for c in self.clients.itervalues():
1506
for c in self.clients:
1864
1507
if c.fingerprint == fpr:
1865
1508
client = c
1866
1509
break
1867
1510
else:
1868
logger.info("Client not found for fingerprint: %s, ad"
1869
"dress: %s", fpr, address)
1511
logger.warning(u"Client not found for fingerprint: %s, ad"
1512
u"dress: %s", fpr, address)
1870
1513
if self.use_dbus:
1871
1514
# Emit D-Bus signal
1872
mandos_dbus_service.ClientNotFound(fpr,
1873
address[0])
1515
mandos_dbus_service.ClientNotFound(fpr, address)
1874
1516
parent_pipe.send(False)
1875
1517
return False
1876
1518
1877
1519
gobject.io_add_watch(parent_pipe.fileno(),
1878
1520
gobject.IO_IN | gobject.IO_HUP,
1879
1521
functools.partial(self.handle_ipc,
1880
parent_pipe =
1881
parent_pipe,
1882
proc = proc,
1883
client_object =
1884
client))
1522
parent_pipe = parent_pipe,
1523
client_object = client))
1885
1524
parent_pipe.send(True)
1886
# remove the old hook in favor of the new above hook on
1887
# same fileno
1525
# remove the old hook in favor of the new above hook on same fileno
1888
1526
return False
1889
1527
if command == 'funcall':
1890
1528
funcname = request[1]
1891
1529
args = request[2]
1892
1530
kwargs = request[3]
1893
1531
1894
parent_pipe.send(('data', getattr(client_object,
1895
funcname)(*args,
1896
**kwargs)))
1897
1532
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1533
1898
1534
if command == 'getattr':
1899
1535
attrname = request[1]
1900
1536
if callable(client_object.__getattribute__(attrname)):
1901
1537
parent_pipe.send(('function',))
1902
1538
else:
1903
parent_pipe.send(('data', client_object
1904
.__getattribute__(attrname)))
1539
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1905
1540
1906
1541
if command == 'setattr':
1907
1542
attrname = request[1]
1908
1543
value = request[2]
1909
1544
setattr(client_object, attrname, value)
1910
1545
1911
1546
return True
1912
1547
1913
1548
1914
1549
def string_to_delta(interval):
1915
1550
"""Parse a string and return a datetime.timedelta
1916
1551
1917
>>> string_to_delta('7d')
1552
>>> string_to_delta(u'7d')
1918
1553
datetime.timedelta(7)
1919
>>> string_to_delta('60s')
1554
>>> string_to_delta(u'60s')
1920
1555
datetime.timedelta(0, 60)
1921
>>> string_to_delta('60m')
1556
>>> string_to_delta(u'60m')
1922
1557
datetime.timedelta(0, 3600)
1923
>>> string_to_delta('24h')
1558
>>> string_to_delta(u'24h')
1924
1559
datetime.timedelta(1)
1925
>>> string_to_delta('1w')
1560
>>> string_to_delta(u'1w')
1926
1561
datetime.timedelta(7)
1927
>>> string_to_delta('5m 30s')
1562
>>> string_to_delta(u'5m 30s')
1928
1563
datetime.timedelta(0, 330)
1929
1564
"""
1930
1565
timevalue = datetime.timedelta(0)
1932
1567
try:
1933
1568
suffix = unicode(s[-1])
1934
1569
value = int(s[:-1])
1935
if suffix == "d":
1570
if suffix == u"d":
1936
1571
delta = datetime.timedelta(value)
1937
elif suffix == "s":
1572
elif suffix == u"s":
1938
1573
delta = datetime.timedelta(0, value)
1939
elif suffix == "m":
1574
elif suffix == u"m":
1940
1575
delta = datetime.timedelta(0, 0, 0, 0, value)
1941
elif suffix == "h":
1576
elif suffix == u"h":
1942
1577
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1943
elif suffix == "w":
1578
elif suffix == u"w":
1944
1579
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1945
1580
else:
1946
raise ValueError("Unknown suffix %r" % suffix)
1947
except (ValueError, IndexError) as e:
1948
raise ValueError(*(e.args))
1581
raise ValueError(u"Unknown suffix %r" % suffix)
1582
except (ValueError, IndexError), e:
1583
raise ValueError(e.message)
1949
1584
timevalue += delta
1950
1585
return timevalue
1951
1586
1952
1587
1588
def if_nametoindex(interface):
1589
"""Call the C function if_nametoindex(), or equivalent
1590
1591
Note: This function cannot accept a unicode string."""
1592
global if_nametoindex
1593
try:
1594
if_nametoindex = (ctypes.cdll.LoadLibrary
1595
(ctypes.util.find_library(u"c"))
1596
.if_nametoindex)
1597
except (OSError, AttributeError):
1598
logger.warning(u"Doing if_nametoindex the hard way")
1599
def if_nametoindex(interface):
1600
"Get an interface index the hard way, i.e. using fcntl()"
1601
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1602
with contextlib.closing(socket.socket()) as s:
1603
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1604
struct.pack(str(u"16s16x"),
1605
interface))
1606
interface_index = struct.unpack(str(u"I"),
1607
ifreq[16:20])[0]
1608
return interface_index
1609
return if_nametoindex(interface)
1610
1611
1953
1612
def daemon(nochdir = False, noclose = False):
1954
1613
"""See daemon(3). Standard BSD Unix function.
1955
1614
1958
1617
sys.exit()
1959
1618
os.setsid()
1960
1619
if not nochdir:
1961
os.chdir("/")
1620
os.chdir(u"/")
1962
1621
if os.fork():
1963
1622
sys.exit()
1964
1623
if not noclose:
1966
1625
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1967
1626
if not stat.S_ISCHR(os.fstat(null).st_mode):
1968
1627
raise OSError(errno.ENODEV,
1969
"%s not a character device"
1628
u"%s not a character device"
1970
1629
% os.path.devnull)
1971
1630
os.dup2(null, sys.stdin.fileno())
1972
1631
os.dup2(null, sys.stdout.fileno())
1980
1639
##################################################################
1981
1640
# Parsing of options, both command line and config file
1982
1641
1983
parser = argparse.ArgumentParser()
1984
parser.add_argument("-v", "--version", action="version",
1985
version = "%%(prog)s %s" % version,
1986
help="show version number and exit")
1987
parser.add_argument("-i", "--interface", metavar="IF",
1988
help="Bind to interface IF")
1989
parser.add_argument("-a", "--address",
1990
help="Address to listen for requests on")
1991
parser.add_argument("-p", "--port", type=int,
1992
help="Port number to receive requests on")
1993
parser.add_argument("--check", action="store_true",
1994
help="Run self-test")
1995
parser.add_argument("--debug", action="store_true",
1996
help="Debug mode; run in foreground and log"
1997
" to terminal")
1998
parser.add_argument("--debuglevel", metavar="LEVEL",
1999
help="Debug level for stdout output")
2000
parser.add_argument("--priority", help="GnuTLS"
2001
" priority string (see GnuTLS documentation)")
2002
parser.add_argument("--servicename",
2003
metavar="NAME", help="Zeroconf service name")
2004
parser.add_argument("--configdir",
2005
default="/etc/mandos", metavar="DIR",
2006
help="Directory to search for configuration"
2007
" files")
2008
parser.add_argument("--no-dbus", action="store_false",
2009
dest="use_dbus", help="Do not provide D-Bus"
2010
" system bus interface")
2011
parser.add_argument("--no-ipv6", action="store_false",
2012
dest="use_ipv6", help="Do not use IPv6")
2013
parser.add_argument("--no-restore", action="store_false",
2014
dest="restore", help="Do not restore stored"
2015
" state")
2016
parser.add_argument("--statedir", metavar="DIR",
2017
help="Directory to save/restore state in")
2018
2019
options = parser.parse_args()
1642
parser = optparse.OptionParser(version = "%%prog %s" % version)
1643
parser.add_option("-i", u"--interface", type=u"string",
1644
metavar="IF", help=u"Bind to interface IF")
1645
parser.add_option("-a", u"--address", type=u"string",
1646
help=u"Address to listen for requests on")
1647
parser.add_option("-p", u"--port", type=u"int",
1648
help=u"Port number to receive requests on")
1649
parser.add_option("--check", action=u"store_true",
1650
help=u"Run self-test")
1651
parser.add_option("--debug", action=u"store_true",
1652
help=u"Debug mode; run in foreground and log to"
1653
u" terminal")
1654
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1655
help=u"Debug level for stdout output")
1656
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1657
u" priority string (see GnuTLS documentation)")
1658
parser.add_option("--servicename", type=u"string",
1659
metavar=u"NAME", help=u"Zeroconf service name")
1660
parser.add_option("--configdir", type=u"string",
1661
default=u"/etc/mandos", metavar=u"DIR",
1662
help=u"Directory to search for configuration"
1663
u" files")
1664
parser.add_option("--no-dbus", action=u"store_false",
1665
dest=u"use_dbus", help=u"Do not provide D-Bus"
1666
u" system bus interface")
1667
parser.add_option("--no-ipv6", action=u"store_false",
1668
dest=u"use_ipv6", help=u"Do not use IPv6")
1669
options = parser.parse_args()[0]
2020
1670
2021
1671
if options.check:
2022
1672
import doctest
2024
1674
sys.exit()
2025
1675
2026
1676
# Default values for config file for server-global settings
2027
server_defaults = { "interface": "",
2028
"address": "",
2029
"port": "",
2030
"debug": "False",
2031
"priority":
2032
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2033
"servicename": "Mandos",
2034
"use_dbus": "True",
2035
"use_ipv6": "True",
2036
"debuglevel": "",
2037
"restore": "True",
2038
"statedir": "/var/lib/mandos"
1677
server_defaults = { u"interface": u"",
1678
u"address": u"",
1679
u"port": u"",
1680
u"debug": u"False",
1681
u"priority":
1682
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1683
u"servicename": u"Mandos",
1684
u"use_dbus": u"True",
1685
u"use_ipv6": u"True",
1686
u"debuglevel": u"",
2039
1687
}
2040
1688
2041
1689
# Parse config file for server-global settings
2042
1690
server_config = configparser.SafeConfigParser(server_defaults)
2043
1691
del server_defaults
2044
1692
server_config.read(os.path.join(options.configdir,
2045
"mandos.conf"))
1693
u"mandos.conf"))
2046
1694
# Convert the SafeConfigParser object to a dict
2047
1695
server_settings = server_config.defaults()
2048
1696
# Use the appropriate methods on the non-string config options
2049
for option in ("debug", "use_dbus", "use_ipv6"):
2050
server_settings[option] = server_config.getboolean("DEFAULT",
1697
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1698
server_settings[option] = server_config.getboolean(u"DEFAULT",
2051
1699
option)
2052
1700
if server_settings["port"]:
2053
server_settings["port"] = server_config.getint("DEFAULT",
2054
"port")
1701
server_settings["port"] = server_config.getint(u"DEFAULT",
1702
u"port")
2055
1703
del server_config
2056
1704
2057
1705
# Override the settings from the config file with command line
2058
1706
# options, if set.
2059
for option in ("interface", "address", "port", "debug",
2060
"priority", "servicename", "configdir",
2061
"use_dbus", "use_ipv6", "debuglevel", "restore",
2062
"statedir"):
1707
for option in (u"interface", u"address", u"port", u"debug",
1708
u"priority", u"servicename", u"configdir",
1709
u"use_dbus", u"use_ipv6", u"debuglevel"):
2063
1710
value = getattr(options, option)
2064
1711
if value is not None:
2065
1712
server_settings[option] = value
2073
1720
##################################################################
2074
1721
2075
1722
# For convenience
2076
debug = server_settings["debug"]
2077
debuglevel = server_settings["debuglevel"]
2078
use_dbus = server_settings["use_dbus"]
2079
use_ipv6 = server_settings["use_ipv6"]
2080
stored_state_path = os.path.join(server_settings["statedir"],
2081
stored_state_file)
2082
2083
if debug:
2084
initlogger(debug, logging.DEBUG)
2085
else:
2086
if not debuglevel:
2087
initlogger(debug)
2088
else:
2089
level = getattr(logging, debuglevel.upper())
2090
initlogger(debug, level)
2091
2092
if server_settings["servicename"] != "Mandos":
1723
debug = server_settings[u"debug"]
1724
debuglevel = server_settings[u"debuglevel"]
1725
use_dbus = server_settings[u"use_dbus"]
1726
use_ipv6 = server_settings[u"use_ipv6"]
1727
1728
if server_settings[u"servicename"] != u"Mandos":
2093
1729
syslogger.setFormatter(logging.Formatter
2094
('Mandos (%s) [%%(process)d]:'
2095
' %%(levelname)s: %%(message)s'
2096
% server_settings["servicename"]))
1730
(u'Mandos (%s) [%%(process)d]:'
1731
u' %%(levelname)s: %%(message)s'
1732
% server_settings[u"servicename"]))
2097
1733
2098
1734
# Parse config file with clients
2099
client_config = configparser.SafeConfigParser(Client
2100
.client_defaults)
2101
client_config.read(os.path.join(server_settings["configdir"],
2102
"clients.conf"))
1735
client_defaults = { u"timeout": u"1h",
1736
u"interval": u"5m",
1737
u"checker": u"fping -q -- %%(host)s",
1738
u"host": u"",
1739
u"approval_delay": u"0s",
1740
u"approval_duration": u"1s",
1741
}
1742
client_config = configparser.SafeConfigParser(client_defaults)
1743
client_config.read(os.path.join(server_settings[u"configdir"],
1744
u"clients.conf"))
2103
1745
2104
1746
global mandos_dbus_service
2105
1747
mandos_dbus_service = None
2106
1748
2107
tcp_server = MandosServer((server_settings["address"],
2108
server_settings["port"]),
1749
tcp_server = MandosServer((server_settings[u"address"],
1750
server_settings[u"port"]),
2109
1751
ClientHandler,
2110
interface=(server_settings["interface"]
1752
interface=(server_settings[u"interface"]
2111
1753
or None),
2112
1754
use_ipv6=use_ipv6,
2113
1755
gnutls_priority=
2114
server_settings["priority"],
1756
server_settings[u"priority"],
2115
1757
use_dbus=use_dbus)
2116
if not debug:
2117
pidfilename = "/var/run/mandos.pid"
2118
try:
2119
pidfile = open(pidfilename, "w")
2120
except IOError:
2121
logger.error("Could not open file %r", pidfilename)
1758
pidfilename = u"/var/run/mandos.pid"
1759
try:
1760
pidfile = open(pidfilename, u"w")
1761
except IOError:
1762
logger.error(u"Could not open file %r", pidfilename)
2122
1763
2123
1764
try:
2124
uid = pwd.getpwnam("_mandos").pw_uid
2125
gid = pwd.getpwnam("_mandos").pw_gid
1765
uid = pwd.getpwnam(u"_mandos").pw_uid
1766
gid = pwd.getpwnam(u"_mandos").pw_gid
2126
1767
except KeyError:
2127
1768
try:
2128
uid = pwd.getpwnam("mandos").pw_uid
2129
gid = pwd.getpwnam("mandos").pw_gid
1769
uid = pwd.getpwnam(u"mandos").pw_uid
1770
gid = pwd.getpwnam(u"mandos").pw_gid
2130
1771
except KeyError:
2131
1772
try:
2132
uid = pwd.getpwnam("nobody").pw_uid
2133
gid = pwd.getpwnam("nobody").pw_gid
1773
uid = pwd.getpwnam(u"nobody").pw_uid
1774
gid = pwd.getpwnam(u"nobody").pw_gid
2134
1775
except KeyError:
2135
1776
uid = 65534
2136
1777
gid = 65534
2137
1778
try:
2138
1779
os.setgid(gid)
2139
1780
os.setuid(uid)
2140
except OSError as error:
1781
except OSError, error:
2141
1782
if error[0] != errno.EPERM:
2142
1783
raise error
2143
1784
1785
if not debug and not debuglevel:
1786
syslogger.setLevel(logging.WARNING)
1787
console.setLevel(logging.WARNING)
1788
if debuglevel:
1789
level = getattr(logging, debuglevel.upper())
1790
syslogger.setLevel(level)
1791
console.setLevel(level)
1792
2144
1793
if debug:
2145
1794
# Enable all possible GnuTLS debugging
2146
1795
2150
1799
2151
1800
@gnutls.library.types.gnutls_log_func
2152
1801
def debug_gnutls(level, string):
2153
logger.debug("GnuTLS: %s", string[:-1])
1802
logger.debug(u"GnuTLS: %s", string[:-1])
2154
1803
2155
1804
(gnutls.library.functions
2156
1805
.gnutls_global_set_log_function(debug_gnutls))
2160
1809
os.dup2(null, sys.stdin.fileno())
2161
1810
if null > 2:
2162
1811
os.close(null)
2163
2164
# Need to fork before connecting to D-Bus
2165
if not debug:
2166
# Close all input and output, do double fork, etc.
2167
daemon()
2168
2169
gobject.threads_init()
1812
else:
1813
# No console logging
1814
logger.removeHandler(console)
1815
2170
1816
2171
1817
global main_loop
2172
1818
# From the Avahi example code
2176
1822
# End of Avahi example code
2177
1823
if use_dbus:
2178
1824
try:
2179
bus_name = dbus.service.BusName("se.recompile.Mandos",
1825
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2180
1826
bus, do_not_queue=True)
2181
old_bus_name = (dbus.service.BusName
2182
("se.bsnet.fukt.Mandos", bus,
2183
do_not_queue=True))
2184
except dbus.exceptions.NameExistsException as e:
2185
logger.error(unicode(e) + ", disabling D-Bus")
1827
except dbus.exceptions.NameExistsException, e:
1828
logger.error(unicode(e) + u", disabling D-Bus")
2186
1829
use_dbus = False
2187
server_settings["use_dbus"] = False
1830
server_settings[u"use_dbus"] = False
2188
1831
tcp_server.use_dbus = False
2189
1832
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2190
service = AvahiServiceToSyslog(name =
2191
server_settings["servicename"],
2192
servicetype = "_mandos._tcp",
2193
protocol = protocol, bus = bus)
1833
service = AvahiService(name = server_settings[u"servicename"],
1834
servicetype = u"_mandos._tcp",
1835
protocol = protocol, bus = bus)
2194
1836
if server_settings["interface"]:
2195
1837
service.interface = (if_nametoindex
2196
(str(server_settings["interface"])))
2197
1838
(str(server_settings[u"interface"])))
1839
1840
if not debug:
1841
# Close all input and output, do double fork, etc.
1842
daemon()
1843
2198
1844
global multiprocessing_manager
2199
1845
multiprocessing_manager = multiprocessing.Manager()
2200
1846
2201
1847
client_class = Client
2202
1848
if use_dbus:
2203
client_class = functools.partial(ClientDBusTransitional,
2204
bus = bus)
2205
2206
client_settings = Client.config_parser(client_config)
2207
old_client_settings = {}
2208
clients_data = {}
2209
2210
# Get client data and settings from last running state.
2211
if server_settings["restore"]:
2212
try:
2213
with open(stored_state_path, "rb") as stored_state:
2214
clients_data, old_client_settings = (pickle.load
2215
(stored_state))
2216
os.remove(stored_state_path)
2217
except IOError as e:
2218
logger.warning("Could not load persistent state: {0}"
2219
.format(e))
2220
if e.errno != errno.ENOENT:
2221
raise
2222
except EOFError as e:
2223
logger.warning("Could not load persistent state: "
2224
"EOFError: {0}".format(e))
2225
2226
with PGPEngine() as pgp:
2227
for client_name, client in clients_data.iteritems():
2228
# Decide which value to use after restoring saved state.
2229
# We have three different values: Old config file,
2230
# new config file, and saved state.
2231
# New config value takes precedence if it differs from old
2232
# config value, otherwise use saved state.
2233
for name, value in client_settings[client_name].items():
2234
try:
2235
# For each value in new config, check if it
2236
# differs from the old config value (Except for
2237
# the "secret" attribute)
2238
if (name != "secret" and
2239
value != old_client_settings[client_name]
2240
[name]):
2241
client[name] = value
2242
except KeyError:
2243
pass
2244
2245
# Clients who has passed its expire date can still be
2246
# enabled if its last checker was successful. Clients
2247
# whose checker succeeded before we stored its state is
2248
# assumed to have successfully run all checkers during
2249
# downtime.
2250
if client["enabled"]:
2251
if datetime.datetime.utcnow() >= client["expires"]:
2252
if not client["last_checked_ok"]:
2253
logger.warning(
2254
"disabling client {0} - Client never "
2255
"performed a successful checker"
2256
.format(client_name))
2257
client["enabled"] = False
2258
elif client["last_checker_status"] != 0:
2259
logger.warning(
2260
"disabling client {0} - Client "
2261
"last checker failed with error code {1}"
2262
.format(client_name,
2263
client["last_checker_status"]))
2264
client["enabled"] = False
2265
else:
2266
client["expires"] = (datetime.datetime
2267
.utcnow()
2268
+ client["timeout"])
2269
logger.debug("Last checker succeeded,"
2270
" keeping {0} enabled"
2271
.format(client_name))
1849
client_class = functools.partial(ClientDBus, bus = bus)
1850
def client_config_items(config, section):
1851
special_settings = {
1852
"approved_by_default":
1853
lambda: config.getboolean(section,
1854
"approved_by_default"),
1855
}
1856
for name, value in config.items(section):
2272
1857
try:
2273
client["secret"] = (
2274
pgp.decrypt(client["encrypted_secret"],
2275
client_settings[client_name]
2276
["secret"]))
2277
except PGPError:
2278
# If decryption fails, we use secret from new settings
2279
logger.debug("Failed to decrypt {0} old secret"
2280
.format(client_name))
2281
client["secret"] = (
2282
client_settings[client_name]["secret"])
2283
2284
2285
# Add/remove clients based on new changes made to config
2286
for client_name in (set(old_client_settings)
2287
- set(client_settings)):
2288
del clients_data[client_name]
2289
for client_name in (set(client_settings)
2290
- set(old_client_settings)):
2291
clients_data[client_name] = client_settings[client_name]
2292
2293
# Create all client objects
2294
for client_name, client in clients_data.iteritems():
2295
tcp_server.clients[client_name] = client_class(
2296
name = client_name, settings = client)
2297
1858
yield (name, special_settings[name]())
1859
except KeyError:
1860
yield (name, value)
1861
1862
tcp_server.clients.update(set(
1863
client_class(name = section,
1864
config= dict(client_config_items(
1865
client_config, section)))
1866
for section in client_config.sections()))
2298
1867
if not tcp_server.clients:
2299
logger.warning("No clients defined")
1868
logger.warning(u"No clients defined")
2300
1869
1870
try:
1871
with pidfile:
1872
pid = os.getpid()
1873
pidfile.write(str(pid) + "\n")
1874
del pidfile
1875
except IOError:
1876
logger.error(u"Could not write to file %r with PID %d",
1877
pidfilename, pid)
1878
except NameError:
1879
# "pidfile" was never created
1880
pass
1881
del pidfilename
1882
2301
1883
if not debug:
2302
try:
2303
with pidfile:
2304
pid = os.getpid()
2305
pidfile.write(str(pid) + "\n".encode("utf-8"))
2306
del pidfile
2307
except IOError:
2308
logger.error("Could not write to file %r with PID %d",
2309
pidfilename, pid)
2310
except NameError:
2311
# "pidfile" was never created
2312
pass
2313
del pidfilename
2314
1884
signal.signal(signal.SIGINT, signal.SIG_IGN)
2315
2316
1885
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2317
1886
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2318
1887
2320
1889
class MandosDBusService(dbus.service.Object):
2321
1890
"""A D-Bus proxy object"""
2322
1891
def __init__(self):
2323
dbus.service.Object.__init__(self, bus, "/")
2324
_interface = "se.recompile.Mandos"
1892
dbus.service.Object.__init__(self, bus, u"/")
1893
_interface = u"se.bsnet.fukt.Mandos"
2325
1894
2326
@dbus.service.signal(_interface, signature="o")
1895
@dbus.service.signal(_interface, signature=u"o")
2327
1896
def ClientAdded(self, objpath):
2328
1897
"D-Bus signal"
2329
1898
pass
2330
1899
2331
@dbus.service.signal(_interface, signature="ss")
1900
@dbus.service.signal(_interface, signature=u"ss")
2332
1901
def ClientNotFound(self, fingerprint, address):
2333
1902
"D-Bus signal"
2334
1903
pass
2335
1904
2336
@dbus.service.signal(_interface, signature="os")
1905
@dbus.service.signal(_interface, signature=u"os")
2337
1906
def ClientRemoved(self, objpath, name):
2338
1907
"D-Bus signal"
2339
1908
pass
2340
1909
2341
@dbus.service.method(_interface, out_signature="ao")
1910
@dbus.service.method(_interface, out_signature=u"ao")
2342
1911
def GetAllClients(self):
2343
1912
"D-Bus method"
2344
1913
return dbus.Array(c.dbus_object_path
2345
for c in
2346
tcp_server.clients.itervalues())
1914
for c in tcp_server.clients)
2347
1915
2348
1916
@dbus.service.method(_interface,
2349
out_signature="a{oa{sv}}")
1917
out_signature=u"a{oa{sv}}")
2350
1918
def GetAllClientsWithProperties(self):
2351
1919
"D-Bus method"
2352
1920
return dbus.Dictionary(
2353
((c.dbus_object_path, c.GetAll(""))
2354
for c in tcp_server.clients.itervalues()),
2355
signature="oa{sv}")
1921
((c.dbus_object_path, c.GetAll(u""))
1922
for c in tcp_server.clients),
1923
signature=u"oa{sv}")
2356
1924
2357
@dbus.service.method(_interface, in_signature="o")
1925
@dbus.service.method(_interface, in_signature=u"o")
2358
1926
def RemoveClient(self, object_path):
2359
1927
"D-Bus method"
2360
for c in tcp_server.clients.itervalues():
1928
for c in tcp_server.clients:
2361
1929
if c.dbus_object_path == object_path:
2362
del tcp_server.clients[c.name]
1930
tcp_server.clients.remove(c)
2363
1931
c.remove_from_connection()
2364
1932
# Don't signal anything except ClientRemoved
2365
1933
c.disable(quiet=True)
2370
1938
2371
1939
del _interface
2372
1940
2373
class MandosDBusServiceTransitional(MandosDBusService):
2374
__metaclass__ = AlternateDBusNamesMetaclass
2375
mandos_dbus_service = MandosDBusServiceTransitional()
1941
mandos_dbus_service = MandosDBusService()
2376
1942
2377
1943
def cleanup():
2378
1944
"Cleanup function; run on exit"
2379
1945
service.cleanup()
2380
1946
2381
multiprocessing.active_children()
2382
if not (tcp_server.clients or client_settings):
2383
return
2384
2385
# Store client before exiting. Secrets are encrypted with key
2386
# based on what config file has. If config file is
2387
# removed/edited, old secret will thus be unrecovable.
2388
clients = {}
2389
with PGPEngine() as pgp:
2390
for client in tcp_server.clients.itervalues():
2391
key = client_settings[client.name]["secret"]
2392
client.encrypted_secret = pgp.encrypt(client.secret,
2393
key)
2394
client_dict = {}
2395
2396
# A list of attributes that can not be pickled
2397
# + secret.
2398
exclude = set(("bus", "changedstate", "secret",
2399
"checker"))
2400
for name, typ in (inspect.getmembers
2401
(dbus.service.Object)):
2402
exclude.add(name)
2403
2404
client_dict["encrypted_secret"] = (client
2405
.encrypted_secret)
2406
for attr in client.client_structure:
2407
if attr not in exclude:
2408
client_dict[attr] = getattr(client, attr)
2409
2410
clients[client.name] = client_dict
2411
del client_settings[client.name]["secret"]
2412
2413
try:
2414
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2415
prefix="clients-",
2416
dir=os.path.dirname
2417
(stored_state_path))
2418
with os.fdopen(tempfd, "wb") as stored_state:
2419
pickle.dump((clients, client_settings), stored_state)
2420
os.rename(tempname, stored_state_path)
2421
except (IOError, OSError) as e:
2422
logger.warning("Could not save persistent state: {0}"
2423
.format(e))
2424
if not debug:
2425
try:
2426
os.remove(tempname)
2427
except NameError:
2428
pass
2429
if e.errno not in set((errno.ENOENT, errno.EACCES,
2430
errno.EEXIST)):
2431
raise e
2432
2433
# Delete all clients, and settings from config
2434
1947
while tcp_server.clients:
2435
name, client = tcp_server.clients.popitem()
1948
client = tcp_server.clients.pop()
2436
1949
if use_dbus:
2437
1950
client.remove_from_connection()
1951
client.disable_hook = None
2438
1952
# Don't signal anything except ClientRemoved
2439
1953
client.disable(quiet=True)
2440
1954
if use_dbus:
2441
1955
# Emit D-Bus signal
2442
mandos_dbus_service.ClientRemoved(client
2443
.dbus_object_path,
1956
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2444
1957
client.name)
2445
client_settings.clear()
2446
1958
2447
1959
atexit.register(cleanup)
2448
1960
2449
for client in tcp_server.clients.itervalues():
1961
for client in tcp_server.clients:
2450
1962
if use_dbus:
2451
1963
# Emit D-Bus signal
2452
1964
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2453
# Need to initiate checking of clients
2454
if client.enabled:
2455
client.init_checker()
1965
client.enable()
2456
1966
2457
1967
tcp_server.enable()
2458
1968
tcp_server.server_activate()
2460
1970
# Find out what port we got
2461
1971
service.port = tcp_server.socket.getsockname()[1]
2462
1972
if use_ipv6:
2463
logger.info("Now listening on address %r, port %d,"
1973
logger.info(u"Now listening on address %r, port %d,"
2464
1974
" flowinfo %d, scope_id %d"
2465
1975
% tcp_server.socket.getsockname())
2466
1976
else: # IPv4
2467
logger.info("Now listening on address %r, port %d"
1977
logger.info(u"Now listening on address %r, port %d"
2468
1978
% tcp_server.socket.getsockname())
2469
1979
2470
1980
#service.interface = tcp_server.socket.getsockname()[3]
2473
1983
# From the Avahi example code
2474
1984
try:
2475
1985
service.activate()
2476
except dbus.exceptions.DBusException as error:
2477
logger.critical("DBusException: %s", error)
1986
except dbus.exceptions.DBusException, error:
1987
logger.critical(u"DBusException: %s", error)
2478
1988
cleanup()
2479
1989
sys.exit(1)
2480
1990
# End of Avahi example code
2484
1994
(tcp_server.handle_request
2485
1995
(*args[2:], **kwargs) or True))
2486
1996
2487
logger.debug("Starting main loop")
1997
logger.debug(u"Starting main loop")
2488
1998
main_loop.run()
2489
except AvahiError as error:
2490
logger.critical("AvahiError: %s", error)
1999
except AvahiError, error:
2000
logger.critical(u"AvahiError: %s", error)
2491
2001
cleanup()
2492
2002
sys.exit(1)
2493
2003
except KeyboardInterrupt:
2494
2004
if debug:
2495
print("", file=sys.stderr)
2496
logger.debug("Server received KeyboardInterrupt")
2497
logger.debug("Server exiting")
2005
print >> sys.stderr
2006
logger.debug(u"Server received KeyboardInterrupt")
2007
logger.debug(u"Server exiting")
2498
2008
# Must run before the D-Bus bus name gets deregistered
2499
2009
cleanup()
2500
2010
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0