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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
#
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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
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# along with this program. If not, see
29
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# <http://www.gnu.org/licenses/>.
30
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#
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
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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 = "1.4.1"
89
stored_state_file = "clients.pickle"
90
91
logger = logging.getLogger()
83
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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
116
syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
118
' %(message)s'))
119
logger.addHandler(syslogger)
120
121
if debug:
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
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logger.setLevel(level)
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130
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class PGPError(Exception):
132
"""Exception if encryption/decryption fails"""
133
pass
134
135
136
class PGPEngine(object):
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
138
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet',
146
'--no-use-agent'])
147
148
def __enter__(self):
149
return self
150
151
def __exit__ (self, exc_type, exc_value, traceback):
152
self._cleanup()
153
return False
154
155
def __del__(self):
156
self._cleanup()
157
158
def _cleanup(self):
159
if self.tempdir is not None:
160
# Delete contents of tempdir
161
for root, dirs, files in os.walk(self.tempdir,
162
topdown = False):
163
for filename in files:
164
os.remove(os.path.join(root, filename))
165
for dirname in dirs:
166
os.rmdir(os.path.join(root, dirname))
167
# Remove tempdir
168
os.rmdir(self.tempdir)
169
self.tempdir = None
170
171
def password_encode(self, password):
172
# Passphrase can not be empty and can not contain newlines or
173
# NUL bytes. So we prefix it and hex encode it.
174
return b"mandos" + binascii.hexlify(password)
175
176
def encrypt(self, data, password):
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
179
try:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
184
f.write(data)
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
187
proc.wait()
188
except IOError as e:
189
raise PGPError(e)
190
self.gnupg.passphrase = None
191
return ciphertext
192
193
def decrypt(self, data, password):
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
196
try:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
201
f.write(data)
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
204
proc.wait()
205
except IOError as e:
206
raise PGPError(e)
207
self.gnupg.passphrase = None
208
return decrypted_plaintext
209
210
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, or None.
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 password 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"] = None
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
def checked_ok(self, timeout=None):
407
def checked_ok(self):
630
408
"""Bump up the timeout for this client.
631
409
632
410
This should only be called when the client has been seen,
633
411
alive and well.
634
412
"""
635
if timeout is None:
636
timeout = self.timeout
637
413
self.last_checked_ok = datetime.datetime.utcnow()
638
if self.disable_initiator_tag is not None:
639
gobject.source_remove(self.disable_initiator_tag)
640
if getattr(self, "enabled", False):
641
self.disable_initiator_tag = (gobject.timeout_add
642
(timedelta_to_milliseconds
643
(timeout), self.disable))
644
self.expires = datetime.datetime.utcnow() + timeout
645
646
def need_approval(self):
647
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))
648
418
649
419
def start_checker(self):
650
420
"""Start a new checker subprocess if one is not running.
663
433
# If a checker exists, make sure it is not a zombie
664
434
try:
665
435
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
666
except (AttributeError, OSError) as error:
436
except (AttributeError, OSError), error:
667
437
if (isinstance(error, OSError)
668
438
and error.errno != errno.ECHILD):
669
439
raise error
670
440
else:
671
441
if pid:
672
logger.warning("Checker was a zombie")
442
logger.warning(u"Checker was a zombie")
673
443
gobject.source_remove(self.checker_callback_tag)
674
444
self.checker_callback(pid, status,
675
445
self.current_checker_command)
680
450
command = self.checker_command % self.host
681
451
except TypeError:
682
452
# Escape attributes for the shell
683
escaped_attrs = dict(
684
(attr,
685
re.escape(unicode(str(getattr(self, attr, "")),
686
errors=
687
'replace')))
688
for attr in
689
self.runtime_expansions)
690
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())
691
459
try:
692
460
command = self.checker_command % escaped_attrs
693
except TypeError as error:
694
logger.error('Could not format string "%s":'
695
' %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)
696
464
return True # Try again later
697
465
self.current_checker_command = command
698
466
try:
699
logger.info("Starting checker %r for %s",
467
logger.info(u"Starting checker %r for %s",
700
468
command, self.name)
701
469
# We don't need to redirect stdout and stderr, since
702
470
# in normal mode, that is already done by daemon(),
704
472
# always replaced by /dev/null.)
705
473
self.checker = subprocess.Popen(command,
706
474
close_fds=True,
707
shell=True, cwd="/")
475
shell=True, cwd=u"/")
708
476
self.checker_callback_tag = (gobject.child_watch_add
709
477
(self.checker.pid,
710
478
self.checker_callback,
715
483
if pid:
716
484
gobject.source_remove(self.checker_callback_tag)
717
485
self.checker_callback(pid, status, command)
718
except OSError as error:
719
logger.error("Failed to start subprocess: %s",
486
except OSError, error:
487
logger.error(u"Failed to start subprocess: %s",
720
488
error)
721
489
# Re-run this periodically if run by gobject.timeout_add
722
490
return True
726
494
if self.checker_callback_tag:
727
495
gobject.source_remove(self.checker_callback_tag)
728
496
self.checker_callback_tag = None
729
if getattr(self, "checker", None) is None:
497
if getattr(self, u"checker", None) is None:
730
498
return
731
logger.debug("Stopping checker for %(name)s", vars(self))
499
logger.debug(u"Stopping checker for %(name)s", vars(self))
732
500
try:
733
501
os.kill(self.checker.pid, signal.SIGTERM)
734
502
#time.sleep(0.5)
735
503
#if self.checker.poll() is None:
736
504
# os.kill(self.checker.pid, signal.SIGKILL)
737
except OSError as error:
505
except OSError, error:
738
506
if error.errno != errno.ESRCH: # No such process
739
507
raise
740
508
self.checker = None
741
509
742
743
def dbus_service_property(dbus_interface, signature="v",
744
access="readwrite", byte_arrays=False):
510
def dbus_service_property(dbus_interface, signature=u"v",
511
access=u"readwrite", byte_arrays=False):
745
512
"""Decorators for marking methods of a DBusObjectWithProperties to
746
513
become properties on the D-Bus.
747
514
754
521
"""
755
522
# Encoding deeply encoded byte arrays is not supported yet by the
756
523
# "Set" method, so we fail early here:
757
if byte_arrays and signature != "ay":
758
raise ValueError("Byte arrays not supported for non-'ay'"
759
" 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)
760
527
def decorator(func):
761
528
func._dbus_is_property = True
762
529
func._dbus_interface = dbus_interface
763
530
func._dbus_signature = signature
764
531
func._dbus_access = access
765
532
func._dbus_name = func.__name__
766
if func._dbus_name.endswith("_dbus_property"):
533
if func._dbus_name.endswith(u"_dbus_property"):
767
534
func._dbus_name = func._dbus_name[:-14]
768
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
535
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
769
536
return func
770
537
return decorator
771
538
791
558
792
559
class DBusObjectWithProperties(dbus.service.Object):
793
560
"""A D-Bus object with properties.
794
561
795
562
Classes inheriting from this can use the dbus_service_property
796
563
decorator to expose methods as D-Bus properties. It exposes the
797
564
standard Get(), Set(), and GetAll() methods on the D-Bus.
799
566
800
567
@staticmethod
801
568
def _is_dbus_property(obj):
802
return getattr(obj, "_dbus_is_property", False)
569
return getattr(obj, u"_dbus_is_property", False)
803
570
804
571
def _get_all_dbus_properties(self):
805
572
"""Returns a generator of (name, attribute) pairs
806
573
"""
807
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
808
for cls in self.__class__.__mro__
574
return ((prop._dbus_name, prop)
809
575
for name, prop in
810
inspect.getmembers(cls, self._is_dbus_property))
576
inspect.getmembers(self, self._is_dbus_property))
811
577
812
578
def _get_dbus_property(self, interface_name, property_name):
813
579
"""Returns a bound method if one exists which is a D-Bus
814
580
property with the specified name and interface.
815
581
"""
816
for cls in self.__class__.__mro__:
817
for name, value in (inspect.getmembers
818
(cls, self._is_dbus_property)):
819
if (value._dbus_name == property_name
820
and value._dbus_interface == interface_name):
821
return value.__get__(self)
822
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
823
592
# No such property
824
raise DBusPropertyNotFound(self.dbus_object_path + ":"
825
+ interface_name + "."
593
raise DBusPropertyNotFound(self.dbus_object_path + u":"
594
+ interface_name + u"."
826
595
+ property_name)
827
596
828
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
829
out_signature="v")
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
598
out_signature=u"v")
830
599
def Get(self, interface_name, property_name):
831
600
"""Standard D-Bus property Get() method, see D-Bus standard.
832
601
"""
833
602
prop = self._get_dbus_property(interface_name, property_name)
834
if prop._dbus_access == "write":
603
if prop._dbus_access == u"write":
835
604
raise DBusPropertyAccessException(property_name)
836
605
value = prop()
837
if not hasattr(value, "variant_level"):
606
if not hasattr(value, u"variant_level"):
838
607
return value
839
608
return type(value)(value, variant_level=value.variant_level+1)
840
609
841
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
842
611
def Set(self, interface_name, property_name, value):
843
612
"""Standard D-Bus property Set() method, see D-Bus standard.
844
613
"""
845
614
prop = self._get_dbus_property(interface_name, property_name)
846
if prop._dbus_access == "read":
615
if prop._dbus_access == u"read":
847
616
raise DBusPropertyAccessException(property_name)
848
if prop._dbus_get_args_options["byte_arrays"]:
617
if prop._dbus_get_args_options[u"byte_arrays"]:
849
618
# The byte_arrays option is not supported yet on
850
619
# signatures other than "ay".
851
if prop._dbus_signature != "ay":
620
if prop._dbus_signature != u"ay":
852
621
raise ValueError
853
value = dbus.ByteArray(b''.join(chr(byte)
854
for byte in value))
622
value = dbus.ByteArray(''.join(unichr(byte)
623
for byte in value))
855
624
prop(value)
856
625
857
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
858
out_signature="a{sv}")
626
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
627
out_signature=u"a{sv}")
859
628
def GetAll(self, interface_name):
860
629
"""Standard D-Bus property GetAll() method, see D-Bus
861
630
standard.
862
631
863
632
Note: Will not include properties with access="write".
864
633
"""
865
properties = {}
634
all = {}
866
635
for name, prop in self._get_all_dbus_properties():
867
636
if (interface_name
868
637
and interface_name != prop._dbus_interface):
869
638
# Interface non-empty but did not match
870
639
continue
871
640
# Ignore write-only properties
872
if prop._dbus_access == "write":
641
if prop._dbus_access == u"write":
873
642
continue
874
643
value = prop()
875
if not hasattr(value, "variant_level"):
876
properties[name] = value
644
if not hasattr(value, u"variant_level"):
645
all[name] = value
877
646
continue
878
properties[name] = type(value)(value, variant_level=
879
value.variant_level+1)
880
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")
881
650
882
651
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
883
out_signature="s",
652
out_signature=u"s",
884
653
path_keyword='object_path',
885
654
connection_keyword='connection')
886
655
def Introspect(self, object_path, connection):
891
660
try:
892
661
document = xml.dom.minidom.parseString(xmlstring)
893
662
def make_tag(document, name, prop):
894
e = document.createElement("property")
895
e.setAttribute("name", name)
896
e.setAttribute("type", prop._dbus_signature)
897
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)
898
667
return e
899
for if_tag in document.getElementsByTagName("interface"):
668
for if_tag in document.getElementsByTagName(u"interface"):
900
669
for tag in (make_tag(document, name, prop)
901
670
for name, prop
902
671
in self._get_all_dbus_properties()
903
672
if prop._dbus_interface
904
== if_tag.getAttribute("name")):
673
== if_tag.getAttribute(u"name")):
905
674
if_tag.appendChild(tag)
906
675
# Add the names to the return values for the
907
676
# "org.freedesktop.DBus.Properties" methods
908
if (if_tag.getAttribute("name")
909
== "org.freedesktop.DBus.Properties"):
910
for cn in if_tag.getElementsByTagName("method"):
911
if cn.getAttribute("name") == "Get":
912
for arg in cn.getElementsByTagName("arg"):
913
if (arg.getAttribute("direction")
914
== "out"):
915
arg.setAttribute("name", "value")
916
elif cn.getAttribute("name") == "GetAll":
917
for arg in cn.getElementsByTagName("arg"):
918
if (arg.getAttribute("direction")
919
== "out"):
920
arg.setAttribute("name", "props")
921
xmlstring = document.toxml("utf-8")
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")
922
691
document.unlink()
923
692
except (AttributeError, xml.dom.DOMException,
924
xml.parsers.expat.ExpatError) as error:
925
logger.error("Failed to override Introspection method",
693
xml.parsers.expat.ExpatError), error:
694
logger.error(u"Failed to override Introspection method",
926
695
error)
927
696
return xmlstring
928
697
929
698
930
def datetime_to_dbus (dt, variant_level=0):
931
"""Convert a UTC datetime.datetime() to a D-Bus type."""
932
if dt is None:
933
return dbus.String("", variant_level = variant_level)
934
return dbus.String(dt.isoformat(),
935
variant_level=variant_level)
936
937
938
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
939
.__metaclass__):
940
"""Applied to an empty subclass of a D-Bus object, this metaclass
941
will add additional D-Bus attributes matching a certain pattern.
942
"""
943
def __new__(mcs, name, bases, attr):
944
# Go through all the base classes which could have D-Bus
945
# methods, signals, or properties in them
946
for base in (b for b in bases
947
if issubclass(b, dbus.service.Object)):
948
# Go though all attributes of the base class
949
for attrname, attribute in inspect.getmembers(base):
950
# Ignore non-D-Bus attributes, and D-Bus attributes
951
# with the wrong interface name
952
if (not hasattr(attribute, "_dbus_interface")
953
or not attribute._dbus_interface
954
.startswith("se.recompile.Mandos")):
955
continue
956
# Create an alternate D-Bus interface name based on
957
# the current name
958
alt_interface = (attribute._dbus_interface
959
.replace("se.recompile.Mandos",
960
"se.bsnet.fukt.Mandos"))
961
# Is this a D-Bus signal?
962
if getattr(attribute, "_dbus_is_signal", False):
963
# Extract the original non-method function by
964
# black magic
965
nonmethod_func = (dict(
966
zip(attribute.func_code.co_freevars,
967
attribute.__closure__))["func"]
968
.cell_contents)
969
# Create a new, but exactly alike, function
970
# object, and decorate it to be a new D-Bus signal
971
# with the alternate D-Bus interface name
972
new_function = (dbus.service.signal
973
(alt_interface,
974
attribute._dbus_signature)
975
(types.FunctionType(
976
nonmethod_func.func_code,
977
nonmethod_func.func_globals,
978
nonmethod_func.func_name,
979
nonmethod_func.func_defaults,
980
nonmethod_func.func_closure)))
981
# Define a creator of a function to call both the
982
# old and new functions, so both the old and new
983
# signals gets sent when the function is called
984
def fixscope(func1, func2):
985
"""This function is a scope container to pass
986
func1 and func2 to the "call_both" function
987
outside of its arguments"""
988
def call_both(*args, **kwargs):
989
"""This function will emit two D-Bus
990
signals by calling func1 and func2"""
991
func1(*args, **kwargs)
992
func2(*args, **kwargs)
993
return call_both
994
# Create the "call_both" function and add it to
995
# the class
996
attr[attrname] = fixscope(attribute,
997
new_function)
998
# Is this a D-Bus method?
999
elif getattr(attribute, "_dbus_is_method", False):
1000
# Create a new, but exactly alike, function
1001
# object. Decorate it to be a new D-Bus method
1002
# with the alternate D-Bus interface name. Add it
1003
# to the class.
1004
attr[attrname] = (dbus.service.method
1005
(alt_interface,
1006
attribute._dbus_in_signature,
1007
attribute._dbus_out_signature)
1008
(types.FunctionType
1009
(attribute.func_code,
1010
attribute.func_globals,
1011
attribute.func_name,
1012
attribute.func_defaults,
1013
attribute.func_closure)))
1014
# Is this a D-Bus property?
1015
elif getattr(attribute, "_dbus_is_property", False):
1016
# Create a new, but exactly alike, function
1017
# object, and decorate it to be a new D-Bus
1018
# property with the alternate D-Bus interface
1019
# name. Add it to the class.
1020
attr[attrname] = (dbus_service_property
1021
(alt_interface,
1022
attribute._dbus_signature,
1023
attribute._dbus_access,
1024
attribute
1025
._dbus_get_args_options
1026
["byte_arrays"])
1027
(types.FunctionType
1028
(attribute.func_code,
1029
attribute.func_globals,
1030
attribute.func_name,
1031
attribute.func_defaults,
1032
attribute.func_closure)))
1033
return type.__new__(mcs, name, bases, attr)
1034
1035
1036
699
class ClientDBus(Client, DBusObjectWithProperties):
1037
700
"""A Client class using D-Bus
1038
701
1040
703
dbus_object_path: dbus.ObjectPath
1041
704
bus: dbus.SystemBus()
1042
705
"""
1043
1044
runtime_expansions = (Client.runtime_expansions
1045
+ ("dbus_object_path",))
1046
1047
706
# dbus.service.Object doesn't use super(), so we can't either.
1048
707
1049
708
def __init__(self, bus = None, *args, **kwargs):
709
self._approvals_pending = 0
1050
710
self.bus = bus
1051
711
Client.__init__(self, *args, **kwargs)
1052
self._approvals_pending = 0
1053
1054
self._approvals_pending = 0
1055
712
# Only now, when this client is initialized, can it show up on
1056
713
# the D-Bus
1057
client_object_name = unicode(self.name).translate(
1058
{ord("."): ord("_"),
1059
ord("-"): ord("_")})
1060
714
self.dbus_object_path = (dbus.ObjectPath
1061
("/clients/" + client_object_name))
715
(u"/clients/"
716
+ self.name.replace(u".", u"_")))
1062
717
DBusObjectWithProperties.__init__(self, self.bus,
1063
718
self.dbus_object_path)
1064
719
1065
def notifychangeproperty(transform_func,
1066
dbus_name, type_func=lambda x: x,
1067
variant_level=1):
1068
""" Modify a variable so that it's a property which announces
1069
its changes to DBus.
1070
1071
transform_fun: Function that takes a value and a variant_level
1072
and transforms it to a D-Bus type.
1073
dbus_name: D-Bus name of the variable
1074
type_func: Function that transform the value before sending it
1075
to the D-Bus. Default: no transform
1076
variant_level: D-Bus variant level. Default: 1
1077
"""
1078
attrname = "_{0}".format(dbus_name)
1079
def setter(self, value):
1080
if hasattr(self, "dbus_object_path"):
1081
if (not hasattr(self, attrname) or
1082
type_func(getattr(self, attrname, None))
1083
!= type_func(value)):
1084
dbus_value = transform_func(type_func(value),
1085
variant_level
1086
=variant_level)
1087
self.PropertyChanged(dbus.String(dbus_name),
1088
dbus_value)
1089
setattr(self, attrname, value)
1090
1091
return property(lambda self: getattr(self, attrname), setter)
1092
1093
1094
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1095
approvals_pending = notifychangeproperty(dbus.Boolean,
1096
"ApprovalPending",
1097
type_func = bool)
1098
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1099
last_enabled = notifychangeproperty(datetime_to_dbus,
1100
"LastEnabled")
1101
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1102
type_func = lambda checker:
1103
checker is not None)
1104
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1105
"LastCheckedOK")
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()
1229
1230
# NeRwequest - signal
1231
@dbus.service.signal(_interface, signature="s")
1232
def NewRequest(self, ip):
1233
"""D-Bus signal
1234
Is sent after a client request a password.
1235
"""
1236
884
pass
1237
885
1238
886
## Methods
1239
887
1240
888
# Approve - method
1241
@dbus.service.method(_interface, in_signature="b")
889
@dbus.service.method(_interface, in_signature=u"b")
1242
890
def Approve(self, value):
1243
891
self.approve(value)
1244
892
1245
893
# CheckedOK - method
1246
894
@dbus.service.method(_interface)
1247
895
def CheckedOK(self):
1248
self.checked_ok()
896
return self.checked_ok()
1249
897
1250
898
# Enable - method
1251
899
@dbus.service.method(_interface)
1273
921
## Properties
1274
922
1275
923
# ApprovalPending - property
1276
@dbus_service_property(_interface, signature="b", access="read")
924
@dbus_service_property(_interface, signature=u"b", access=u"read")
1277
925
def ApprovalPending_dbus_property(self):
1278
926
return dbus.Boolean(bool(self.approvals_pending))
1279
927
1280
928
# ApprovedByDefault - property
1281
@dbus_service_property(_interface, signature="b",
1282
access="readwrite")
929
@dbus_service_property(_interface, signature=u"b",
930
access=u"readwrite")
1283
931
def ApprovedByDefault_dbus_property(self, value=None):
1284
932
if value is None: # get
1285
933
return dbus.Boolean(self.approved_by_default)
1286
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))
1287
938
1288
939
# ApprovalDelay - property
1289
@dbus_service_property(_interface, signature="t",
1290
access="readwrite")
940
@dbus_service_property(_interface, signature=u"t",
941
access=u"readwrite")
1291
942
def ApprovalDelay_dbus_property(self, value=None):
1292
943
if value is None: # get
1293
944
return dbus.UInt64(self.approval_delay_milliseconds())
1294
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))
1295
949
1296
950
# ApprovalDuration - property
1297
@dbus_service_property(_interface, signature="t",
1298
access="readwrite")
951
@dbus_service_property(_interface, signature=u"t",
952
access=u"readwrite")
1299
953
def ApprovalDuration_dbus_property(self, value=None):
1300
954
if value is None: # get
1301
return dbus.UInt64(timedelta_to_milliseconds(
955
return dbus.UInt64(self._timedelta_to_milliseconds(
1302
956
self.approval_duration))
1303
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))
1304
961
1305
962
# Name - property
1306
@dbus_service_property(_interface, signature="s", access="read")
963
@dbus_service_property(_interface, signature=u"s", access=u"read")
1307
964
def Name_dbus_property(self):
1308
965
return dbus.String(self.name)
1309
966
1310
967
# Fingerprint - property
1311
@dbus_service_property(_interface, signature="s", access="read")
968
@dbus_service_property(_interface, signature=u"s", access=u"read")
1312
969
def Fingerprint_dbus_property(self):
1313
970
return dbus.String(self.fingerprint)
1314
971
1315
972
# Host - property
1316
@dbus_service_property(_interface, signature="s",
1317
access="readwrite")
973
@dbus_service_property(_interface, signature=u"s",
974
access=u"readwrite")
1318
975
def Host_dbus_property(self, value=None):
1319
976
if value is None: # get
1320
977
return dbus.String(self.host)
1321
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))
1322
982
1323
983
# Created - property
1324
@dbus_service_property(_interface, signature="s", access="read")
984
@dbus_service_property(_interface, signature=u"s", access=u"read")
1325
985
def Created_dbus_property(self):
1326
return datetime_to_dbus(self.created)
986
return dbus.String(self._datetime_to_dbus(self.created))
1327
987
1328
988
# LastEnabled - property
1329
@dbus_service_property(_interface, signature="s", access="read")
989
@dbus_service_property(_interface, signature=u"s", access=u"read")
1330
990
def LastEnabled_dbus_property(self):
1331
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))
1332
994
1333
995
# Enabled - property
1334
@dbus_service_property(_interface, signature="b",
1335
access="readwrite")
996
@dbus_service_property(_interface, signature=u"b",
997
access=u"readwrite")
1336
998
def Enabled_dbus_property(self, value=None):
1337
999
if value is None: # get
1338
1000
return dbus.Boolean(self.enabled)
1342
1004
self.disable()
1343
1005
1344
1006
# LastCheckedOK - property
1345
@dbus_service_property(_interface, signature="s",
1346
access="readwrite")
1007
@dbus_service_property(_interface, signature=u"s",
1008
access=u"readwrite")
1347
1009
def LastCheckedOK_dbus_property(self, value=None):
1348
1010
if value is not None:
1349
1011
self.checked_ok()
1350
1012
return
1351
return datetime_to_dbus(self.last_checked_ok)
1352
1353
# Expires - property
1354
@dbus_service_property(_interface, signature="s", access="read")
1355
def Expires_dbus_property(self):
1356
return datetime_to_dbus(self.expires)
1357
1358
# LastApprovalRequest - property
1359
@dbus_service_property(_interface, signature="s", access="read")
1360
def LastApprovalRequest_dbus_property(self):
1361
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))
1362
1017
1363
1018
# Timeout - property
1364
@dbus_service_property(_interface, signature="t",
1365
access="readwrite")
1019
@dbus_service_property(_interface, signature=u"t",
1020
access=u"readwrite")
1366
1021
def Timeout_dbus_property(self, value=None):
1367
1022
if value is None: # get
1368
1023
return dbus.UInt64(self.timeout_milliseconds())
1369
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
1370
1030
# Reschedule timeout
1371
if self.enabled:
1372
now = datetime.datetime.utcnow()
1373
time_to_die = timedelta_to_milliseconds(
1374
(self.last_checked_ok + self.timeout) - now)
1375
if time_to_die <= 0:
1376
# The timeout has passed
1377
self.disable()
1378
else:
1379
self.expires = (now +
1380
datetime.timedelta(milliseconds =
1381
time_to_die))
1382
if (getattr(self, "disable_initiator_tag", None)
1383
is None):
1384
return
1385
gobject.source_remove(self.disable_initiator_tag)
1386
self.disable_initiator_tag = (gobject.timeout_add
1387
(time_to_die,
1388
self.disable))
1389
1390
# ExtendedTimeout - property
1391
@dbus_service_property(_interface, signature="t",
1392
access="readwrite")
1393
def ExtendedTimeout_dbus_property(self, value=None):
1394
if value is None: # get
1395
return dbus.UInt64(self.extended_timeout_milliseconds())
1396
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))
1397
1045
1398
1046
# Interval - property
1399
@dbus_service_property(_interface, signature="t",
1400
access="readwrite")
1047
@dbus_service_property(_interface, signature=u"t",
1048
access=u"readwrite")
1401
1049
def Interval_dbus_property(self, value=None):
1402
1050
if value is None: # get
1403
1051
return dbus.UInt64(self.interval_milliseconds())
1404
1052
self.interval = datetime.timedelta(0, 0, 0, value)
1405
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:
1406
1057
return
1407
if self.enabled:
1408
# Reschedule checker run
1409
gobject.source_remove(self.checker_initiator_tag)
1410
self.checker_initiator_tag = (gobject.timeout_add
1411
(value, self.start_checker))
1412
self.start_checker() # Start one now, too
1413
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
1414
1064
# Checker - property
1415
@dbus_service_property(_interface, signature="s",
1416
access="readwrite")
1065
@dbus_service_property(_interface, signature=u"s",
1066
access=u"readwrite")
1417
1067
def Checker_dbus_property(self, value=None):
1418
1068
if value is None: # get
1419
1069
return dbus.String(self.checker_command)
1420
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))
1421
1075
1422
1076
# CheckerRunning - property
1423
@dbus_service_property(_interface, signature="b",
1424
access="readwrite")
1077
@dbus_service_property(_interface, signature=u"b",
1078
access=u"readwrite")
1425
1079
def CheckerRunning_dbus_property(self, value=None):
1426
1080
if value is None: # get
1427
1081
return dbus.Boolean(self.checker is not None)
1431
1085
self.stop_checker()
1432
1086
1433
1087
# ObjectPath - property
1434
@dbus_service_property(_interface, signature="o", access="read")
1088
@dbus_service_property(_interface, signature=u"o", access=u"read")
1435
1089
def ObjectPath_dbus_property(self):
1436
1090
return self.dbus_object_path # is already a dbus.ObjectPath
1437
1091
1438
1092
# Secret = property
1439
@dbus_service_property(_interface, signature="ay",
1440
access="write", byte_arrays=True)
1093
@dbus_service_property(_interface, signature=u"ay",
1094
access=u"write", byte_arrays=True)
1441
1095
def Secret_dbus_property(self, value):
1442
1096
self.secret = str(value)
1443
1097
1450
1104
self._pipe.send(('init', fpr, address))
1451
1105
if not self._pipe.recv():
1452
1106
raise KeyError()
1453
1107
1454
1108
def __getattribute__(self, name):
1455
if name == '_pipe':
1109
if(name == '_pipe'):
1456
1110
return super(ProxyClient, self).__getattribute__(name)
1457
1111
self._pipe.send(('getattr', name))
1458
1112
data = self._pipe.recv()
1463
1117
self._pipe.send(('funcall', name, args, kwargs))
1464
1118
return self._pipe.recv()[1]
1465
1119
return func
1466
1120
1467
1121
def __setattr__(self, name, value):
1468
if name == '_pipe':
1122
if(name == '_pipe'):
1469
1123
return super(ProxyClient, self).__setattr__(name, value)
1470
1124
self._pipe.send(('setattr', name, value))
1471
1125
1472
1126
1473
class ClientDBusTransitional(ClientDBus):
1474
__metaclass__ = AlternateDBusNamesMetaclass
1475
1476
1477
1127
class ClientHandler(socketserver.BaseRequestHandler, object):
1478
1128
"""A class to handle client connections.
1479
1129
1482
1132
1483
1133
def handle(self):
1484
1134
with contextlib.closing(self.server.child_pipe) as child_pipe:
1485
logger.info("TCP connection from: %s",
1135
logger.info(u"TCP connection from: %s",
1486
1136
unicode(self.client_address))
1487
logger.debug("Pipe FD: %d",
1137
logger.debug(u"Pipe FD: %d",
1488
1138
self.server.child_pipe.fileno())
1489
1139
1490
1140
session = (gnutls.connection
1491
1141
.ClientSession(self.request,
1492
1142
gnutls.connection
1493
1143
.X509Credentials()))
1494
1144
1495
1145
# Note: gnutls.connection.X509Credentials is really a
1496
1146
# generic GnuTLS certificate credentials object so long as
1497
1147
# no X.509 keys are added to it. Therefore, we can use it
1498
1148
# here despite using OpenPGP certificates.
1499
1500
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1501
# "+AES-256-CBC", "+SHA1",
1502
# "+COMP-NULL", "+CTYPE-OPENPGP",
1503
# "+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"))
1504
1154
# Use a fallback default, since this MUST be set.
1505
1155
priority = self.server.gnutls_priority
1506
1156
if priority is None:
1507
priority = "NORMAL"
1157
priority = u"NORMAL"
1508
1158
(gnutls.library.functions
1509
1159
.gnutls_priority_set_direct(session._c_object,
1510
1160
priority, None))
1511
1161
1512
1162
# Start communication using the Mandos protocol
1513
1163
# Get protocol number
1514
1164
line = self.request.makefile().readline()
1515
logger.debug("Protocol version: %r", line)
1165
logger.debug(u"Protocol version: %r", line)
1516
1166
try:
1517
1167
if int(line.strip().split()[0]) > 1:
1518
1168
raise RuntimeError
1519
except (ValueError, IndexError, RuntimeError) as error:
1520
logger.error("Unknown protocol version: %s", error)
1169
except (ValueError, IndexError, RuntimeError), error:
1170
logger.error(u"Unknown protocol version: %s", error)
1521
1171
return
1522
1172
1523
1173
# Start GnuTLS connection
1524
1174
try:
1525
1175
session.handshake()
1526
except gnutls.errors.GNUTLSError as error:
1527
logger.warning("Handshake failed: %s", error)
1176
except gnutls.errors.GNUTLSError, error:
1177
logger.warning(u"Handshake failed: %s", error)
1528
1178
# Do not run session.bye() here: the session is not
1529
1179
# established. Just abandon the request.
1530
1180
return
1531
logger.debug("Handshake succeeded")
1532
1181
logger.debug(u"Handshake succeeded")
1182
1533
1183
approval_required = False
1534
1184
try:
1535
1185
try:
1536
1186
fpr = self.fingerprint(self.peer_certificate
1537
1187
(session))
1538
except (TypeError,
1539
gnutls.errors.GNUTLSError) as error:
1540
logger.warning("Bad certificate: %s", error)
1188
except (TypeError, gnutls.errors.GNUTLSError), error:
1189
logger.warning(u"Bad certificate: %s", error)
1541
1190
return
1542
logger.debug("Fingerprint: %s", fpr)
1543
1191
logger.debug(u"Fingerprint: %s", fpr)
1192
1544
1193
try:
1545
1194
client = ProxyClient(child_pipe, fpr,
1546
1195
self.client_address)
1547
1196
except KeyError:
1548
1197
return
1549
1198
1550
if self.server.use_dbus:
1551
# Emit D-Bus signal
1552
client.NewRequest(str(self.client_address))
1553
1554
1199
if client.approval_delay:
1555
1200
delay = client.approval_delay
1556
1201
client.approvals_pending += 1
1558
1203
1559
1204
while True:
1560
1205
if not client.enabled:
1561
logger.info("Client %s is disabled",
1206
logger.warning(u"Client %s is disabled",
1562
1207
client.name)
1563
1208
if self.server.use_dbus:
1564
1209
# Emit D-Bus signal
1565
client.Rejected("Disabled")
1210
client.Rejected("Disabled")
1566
1211
return
1567
1212
1568
if client.approved or not client.approval_delay:
1213
if client._approved or not client.approval_delay:
1569
1214
#We are approved or approval is disabled
1570
1215
break
1571
elif client.approved is None:
1572
logger.info("Client %s needs approval",
1216
elif client._approved is None:
1217
logger.info(u"Client %s needs approval",
1573
1218
client.name)
1574
1219
if self.server.use_dbus:
1575
1220
# Emit D-Bus signal
1577
1222
client.approval_delay_milliseconds(),
1578
1223
client.approved_by_default)
1579
1224
else:
1580
logger.warning("Client %s was not approved",
1225
logger.warning(u"Client %s was not approved",
1581
1226
client.name)
1582
1227
if self.server.use_dbus:
1583
1228
# Emit D-Bus signal
1585
1230
return
1586
1231
1587
1232
#wait until timeout or approved
1233
#x = float(client._timedelta_to_milliseconds(delay))
1588
1234
time = datetime.datetime.now()
1589
1235
client.changedstate.acquire()
1590
(client.changedstate.wait
1591
(float(client.timedelta_to_milliseconds(delay)
1592
/ 1000)))
1236
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1593
1237
client.changedstate.release()
1594
1238
time2 = datetime.datetime.now()
1595
1239
if (time2 - time) >= delay:
1599
1243
client.name)
1600
1244
if self.server.use_dbus:
1601
1245
# Emit D-Bus signal
1602
client.Rejected("Approval timed out")
1246
client.Rejected("Timed out")
1603
1247
return
1604
1248
else:
1605
1249
break
1610
1254
while sent_size < len(client.secret):
1611
1255
try:
1612
1256
sent = session.send(client.secret[sent_size:])
1613
except gnutls.errors.GNUTLSError as error:
1257
except (gnutls.errors.GNUTLSError), error:
1614
1258
logger.warning("gnutls send failed")
1615
1259
return
1616
logger.debug("Sent: %d, remaining: %d",
1260
logger.debug(u"Sent: %d, remaining: %d",
1617
1261
sent, len(client.secret)
1618
1262
- (sent_size + sent))
1619
1263
sent_size += sent
1620
1621
logger.info("Sending secret to %s", client.name)
1622
# bump the timeout using extended_timeout
1623
client.checked_ok(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()
1624
1268
if self.server.use_dbus:
1625
1269
# Emit D-Bus signal
1626
1270
client.GotSecret()
1630
1274
client.approvals_pending -= 1
1631
1275
try:
1632
1276
session.bye()
1633
except gnutls.errors.GNUTLSError as error:
1277
except (gnutls.errors.GNUTLSError), error:
1634
1278
logger.warning("GnuTLS bye failed")
1635
1279
1636
1280
@staticmethod
1647
1291
.gnutls_certificate_get_peers
1648
1292
(session._c_object, ctypes.byref(list_size)))
1649
1293
if not bool(cert_list) and list_size.value != 0:
1650
raise gnutls.errors.GNUTLSError("error getting peer"
1651
" certificate")
1294
raise gnutls.errors.GNUTLSError(u"error getting peer"
1295
u" certificate")
1652
1296
if list_size.value == 0:
1653
1297
return None
1654
1298
cert = cert_list[0]
1680
1324
if crtverify.value != 0:
1681
1325
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1682
1326
raise (gnutls.errors.CertificateSecurityError
1683
("Verify failed"))
1327
(u"Verify failed"))
1684
1328
# New buffer for the fingerprint
1685
1329
buf = ctypes.create_string_buffer(20)
1686
1330
buf_len = ctypes.c_size_t()
1693
1337
# Convert the buffer to a Python bytestring
1694
1338
fpr = ctypes.string_at(buf, buf_len.value)
1695
1339
# Convert the bytestring to hexadecimal notation
1696
hex_fpr = binascii.hexlify(fpr).upper()
1340
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1697
1341
return hex_fpr
1698
1342
1699
1343
1702
1346
def sub_process_main(self, request, address):
1703
1347
try:
1704
1348
self.finish_request(request, address)
1705
except Exception:
1349
except:
1706
1350
self.handle_error(request, address)
1707
1351
self.close_request(request)
1708
1352
1709
1353
def process_request(self, request, address):
1710
1354
"""Start a new process to process the request."""
1711
proc = multiprocessing.Process(target = self.sub_process_main,
1712
args = (request,
1713
address))
1714
proc.start()
1715
return proc
1716
1355
multiprocessing.Process(target = self.sub_process_main,
1356
args = (request, address)).start()
1717
1357
1718
1358
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1719
1359
""" adds a pipe to the MixIn """
1723
1363
This function creates a new pipe in self.pipe
1724
1364
"""
1725
1365
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1726
1727
proc = MultiprocessingMixIn.process_request(self, request,
1728
client_address)
1366
1367
super(MultiprocessingMixInWithPipe,
1368
self).process_request(request, client_address)
1729
1369
self.child_pipe.close()
1730
self.add_pipe(parent_pipe, proc)
1731
1732
def add_pipe(self, parent_pipe, proc):
1370
self.add_pipe(parent_pipe)
1371
1372
def add_pipe(self, parent_pipe):
1733
1373
"""Dummy function; override as necessary"""
1734
raise NotImplementedError
1735
1374
pass
1736
1375
1737
1376
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1738
1377
socketserver.TCPServer, object):
1756
1395
bind to an address or port if they were not specified."""
1757
1396
if self.interface is not None:
1758
1397
if SO_BINDTODEVICE is None:
1759
logger.error("SO_BINDTODEVICE does not exist;"
1760
" cannot bind to interface %s",
1398
logger.error(u"SO_BINDTODEVICE does not exist;"
1399
u" cannot bind to interface %s",
1761
1400
self.interface)
1762
1401
else:
1763
1402
try:
1764
1403
self.socket.setsockopt(socket.SOL_SOCKET,
1765
1404
SO_BINDTODEVICE,
1766
1405
str(self.interface
1767
+ '\0'))
1768
except socket.error as error:
1406
+ u'\0'))
1407
except socket.error, error:
1769
1408
if error[0] == errno.EPERM:
1770
logger.error("No permission to"
1771
" bind to interface %s",
1409
logger.error(u"No permission to"
1410
u" bind to interface %s",
1772
1411
self.interface)
1773
1412
elif error[0] == errno.ENOPROTOOPT:
1774
logger.error("SO_BINDTODEVICE not available;"
1775
" cannot bind to interface %s",
1413
logger.error(u"SO_BINDTODEVICE not available;"
1414
u" cannot bind to interface %s",
1776
1415
self.interface)
1777
1416
else:
1778
1417
raise
1780
1419
if self.server_address[0] or self.server_address[1]:
1781
1420
if not self.server_address[0]:
1782
1421
if self.address_family == socket.AF_INET6:
1783
any_address = "::" # in6addr_any
1422
any_address = u"::" # in6addr_any
1784
1423
else:
1785
1424
any_address = socket.INADDR_ANY
1786
1425
self.server_address = (any_address,
1813
1452
self.enabled = False
1814
1453
self.clients = clients
1815
1454
if self.clients is None:
1816
self.clients = {}
1455
self.clients = set()
1817
1456
self.use_dbus = use_dbus
1818
1457
self.gnutls_priority = gnutls_priority
1819
1458
IPv6_TCPServer.__init__(self, server_address,
1823
1462
def server_activate(self):
1824
1463
if self.enabled:
1825
1464
return socketserver.TCPServer.server_activate(self)
1826
1827
1465
def enable(self):
1828
1466
self.enabled = True
1829
1830
def add_pipe(self, parent_pipe, proc):
1467
def add_pipe(self, parent_pipe):
1831
1468
# Call "handle_ipc" for both data and EOF events
1832
1469
gobject.io_add_watch(parent_pipe.fileno(),
1833
1470
gobject.IO_IN | gobject.IO_HUP,
1834
1471
functools.partial(self.handle_ipc,
1835
parent_pipe =
1836
parent_pipe,
1837
proc = proc))
1838
1472
parent_pipe = parent_pipe))
1473
1839
1474
def handle_ipc(self, source, condition, parent_pipe=None,
1840
proc = None, client_object=None):
1475
client_object=None):
1841
1476
condition_names = {
1842
gobject.IO_IN: "IN", # There is data to read.
1843
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
1844
1479
# blocking).
1845
gobject.IO_PRI: "PRI", # There is urgent data to read.
1846
gobject.IO_ERR: "ERR", # Error condition.
1847
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
1848
1483
# broken, usually for pipes and
1849
1484
# sockets).
1850
1485
}
1852
1487
for cond, name in
1853
1488
condition_names.iteritems()
1854
1489
if cond & condition)
1855
# 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
1856
1494
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1857
# Wait for other process to exit
1858
proc.join()
1859
1495
return False
1860
1496
1861
1497
# Read a request from the child
1862
1498
request = parent_pipe.recv()
1499
logger.debug(u"IPC request: %s", repr(request))
1863
1500
command = request[0]
1864
1501
1865
1502
if command == 'init':
1866
1503
fpr = request[1]
1867
1504
address = request[2]
1868
1505
1869
for c in self.clients.itervalues():
1506
for c in self.clients:
1870
1507
if c.fingerprint == fpr:
1871
1508
client = c
1872
1509
break
1873
1510
else:
1874
logger.info("Client not found for fingerprint: %s, ad"
1875
"dress: %s", fpr, address)
1511
logger.warning(u"Client not found for fingerprint: %s, ad"
1512
u"dress: %s", fpr, address)
1876
1513
if self.use_dbus:
1877
1514
# Emit D-Bus signal
1878
mandos_dbus_service.ClientNotFound(fpr,
1879
address[0])
1515
mandos_dbus_service.ClientNotFound(fpr, address)
1880
1516
parent_pipe.send(False)
1881
1517
return False
1882
1518
1883
1519
gobject.io_add_watch(parent_pipe.fileno(),
1884
1520
gobject.IO_IN | gobject.IO_HUP,
1885
1521
functools.partial(self.handle_ipc,
1886
parent_pipe =
1887
parent_pipe,
1888
proc = proc,
1889
client_object =
1890
client))
1522
parent_pipe = parent_pipe,
1523
client_object = client))
1891
1524
parent_pipe.send(True)
1892
# remove the old hook in favor of the new above hook on
1893
# same fileno
1525
# remove the old hook in favor of the new above hook on same fileno
1894
1526
return False
1895
1527
if command == 'funcall':
1896
1528
funcname = request[1]
1897
1529
args = request[2]
1898
1530
kwargs = request[3]
1899
1531
1900
parent_pipe.send(('data', getattr(client_object,
1901
funcname)(*args,
1902
**kwargs)))
1903
1532
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1533
1904
1534
if command == 'getattr':
1905
1535
attrname = request[1]
1906
1536
if callable(client_object.__getattribute__(attrname)):
1907
1537
parent_pipe.send(('function',))
1908
1538
else:
1909
parent_pipe.send(('data', client_object
1910
.__getattribute__(attrname)))
1539
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1911
1540
1912
1541
if command == 'setattr':
1913
1542
attrname = request[1]
1914
1543
value = request[2]
1915
1544
setattr(client_object, attrname, value)
1916
1545
1917
1546
return True
1918
1547
1919
1548
1920
1549
def string_to_delta(interval):
1921
1550
"""Parse a string and return a datetime.timedelta
1922
1551
1923
>>> string_to_delta('7d')
1552
>>> string_to_delta(u'7d')
1924
1553
datetime.timedelta(7)
1925
>>> string_to_delta('60s')
1554
>>> string_to_delta(u'60s')
1926
1555
datetime.timedelta(0, 60)
1927
>>> string_to_delta('60m')
1556
>>> string_to_delta(u'60m')
1928
1557
datetime.timedelta(0, 3600)
1929
>>> string_to_delta('24h')
1558
>>> string_to_delta(u'24h')
1930
1559
datetime.timedelta(1)
1931
>>> string_to_delta('1w')
1560
>>> string_to_delta(u'1w')
1932
1561
datetime.timedelta(7)
1933
>>> string_to_delta('5m 30s')
1562
>>> string_to_delta(u'5m 30s')
1934
1563
datetime.timedelta(0, 330)
1935
1564
"""
1936
1565
timevalue = datetime.timedelta(0)
1938
1567
try:
1939
1568
suffix = unicode(s[-1])
1940
1569
value = int(s[:-1])
1941
if suffix == "d":
1570
if suffix == u"d":
1942
1571
delta = datetime.timedelta(value)
1943
elif suffix == "s":
1572
elif suffix == u"s":
1944
1573
delta = datetime.timedelta(0, value)
1945
elif suffix == "m":
1574
elif suffix == u"m":
1946
1575
delta = datetime.timedelta(0, 0, 0, 0, value)
1947
elif suffix == "h":
1576
elif suffix == u"h":
1948
1577
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1949
elif suffix == "w":
1578
elif suffix == u"w":
1950
1579
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1951
1580
else:
1952
raise ValueError("Unknown suffix %r" % suffix)
1953
except (ValueError, IndexError) as e:
1954
raise ValueError(*(e.args))
1581
raise ValueError(u"Unknown suffix %r" % suffix)
1582
except (ValueError, IndexError), e:
1583
raise ValueError(e.message)
1955
1584
timevalue += delta
1956
1585
return timevalue
1957
1586
1958
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
1959
1612
def daemon(nochdir = False, noclose = False):
1960
1613
"""See daemon(3). Standard BSD Unix function.
1961
1614
1964
1617
sys.exit()
1965
1618
os.setsid()
1966
1619
if not nochdir:
1967
os.chdir("/")
1620
os.chdir(u"/")
1968
1621
if os.fork():
1969
1622
sys.exit()
1970
1623
if not noclose:
1972
1625
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1973
1626
if not stat.S_ISCHR(os.fstat(null).st_mode):
1974
1627
raise OSError(errno.ENODEV,
1975
"%s not a character device"
1628
u"%s not a character device"
1976
1629
% os.path.devnull)
1977
1630
os.dup2(null, sys.stdin.fileno())
1978
1631
os.dup2(null, sys.stdout.fileno())
1986
1639
##################################################################
1987
1640
# Parsing of options, both command line and config file
1988
1641
1989
parser = argparse.ArgumentParser()
1990
parser.add_argument("-v", "--version", action="version",
1991
version = "%%(prog)s %s" % version,
1992
help="show version number and exit")
1993
parser.add_argument("-i", "--interface", metavar="IF",
1994
help="Bind to interface IF")
1995
parser.add_argument("-a", "--address",
1996
help="Address to listen for requests on")
1997
parser.add_argument("-p", "--port", type=int,
1998
help="Port number to receive requests on")
1999
parser.add_argument("--check", action="store_true",
2000
help="Run self-test")
2001
parser.add_argument("--debug", action="store_true",
2002
help="Debug mode; run in foreground and log"
2003
" to terminal")
2004
parser.add_argument("--debuglevel", metavar="LEVEL",
2005
help="Debug level for stdout output")
2006
parser.add_argument("--priority", help="GnuTLS"
2007
" priority string (see GnuTLS documentation)")
2008
parser.add_argument("--servicename",
2009
metavar="NAME", help="Zeroconf service name")
2010
parser.add_argument("--configdir",
2011
default="/etc/mandos", metavar="DIR",
2012
help="Directory to search for configuration"
2013
" files")
2014
parser.add_argument("--no-dbus", action="store_false",
2015
dest="use_dbus", help="Do not provide D-Bus"
2016
" system bus interface")
2017
parser.add_argument("--no-ipv6", action="store_false",
2018
dest="use_ipv6", help="Do not use IPv6")
2019
parser.add_argument("--no-restore", action="store_false",
2020
dest="restore", help="Do not restore stored"
2021
" state")
2022
parser.add_argument("--statedir", metavar="DIR",
2023
help="Directory to save/restore state in")
2024
2025
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]
2026
1670
2027
1671
if options.check:
2028
1672
import doctest
2030
1674
sys.exit()
2031
1675
2032
1676
# Default values for config file for server-global settings
2033
server_defaults = { "interface": "",
2034
"address": "",
2035
"port": "",
2036
"debug": "False",
2037
"priority":
2038
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2039
"servicename": "Mandos",
2040
"use_dbus": "True",
2041
"use_ipv6": "True",
2042
"debuglevel": "",
2043
"restore": "True",
2044
"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"",
2045
1687
}
2046
1688
2047
1689
# Parse config file for server-global settings
2048
1690
server_config = configparser.SafeConfigParser(server_defaults)
2049
1691
del server_defaults
2050
1692
server_config.read(os.path.join(options.configdir,
2051
"mandos.conf"))
1693
u"mandos.conf"))
2052
1694
# Convert the SafeConfigParser object to a dict
2053
1695
server_settings = server_config.defaults()
2054
1696
# Use the appropriate methods on the non-string config options
2055
for option in ("debug", "use_dbus", "use_ipv6"):
2056
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",
2057
1699
option)
2058
1700
if server_settings["port"]:
2059
server_settings["port"] = server_config.getint("DEFAULT",
2060
"port")
1701
server_settings["port"] = server_config.getint(u"DEFAULT",
1702
u"port")
2061
1703
del server_config
2062
1704
2063
1705
# Override the settings from the config file with command line
2064
1706
# options, if set.
2065
for option in ("interface", "address", "port", "debug",
2066
"priority", "servicename", "configdir",
2067
"use_dbus", "use_ipv6", "debuglevel", "restore",
2068
"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"):
2069
1710
value = getattr(options, option)
2070
1711
if value is not None:
2071
1712
server_settings[option] = value
2079
1720
##################################################################
2080
1721
2081
1722
# For convenience
2082
debug = server_settings["debug"]
2083
debuglevel = server_settings["debuglevel"]
2084
use_dbus = server_settings["use_dbus"]
2085
use_ipv6 = server_settings["use_ipv6"]
2086
stored_state_path = os.path.join(server_settings["statedir"],
2087
stored_state_file)
2088
2089
if debug:
2090
initlogger(debug, logging.DEBUG)
2091
else:
2092
if not debuglevel:
2093
initlogger(debug)
2094
else:
2095
level = getattr(logging, debuglevel.upper())
2096
initlogger(debug, level)
2097
2098
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":
2099
1729
syslogger.setFormatter(logging.Formatter
2100
('Mandos (%s) [%%(process)d]:'
2101
' %%(levelname)s: %%(message)s'
2102
% server_settings["servicename"]))
1730
(u'Mandos (%s) [%%(process)d]:'
1731
u' %%(levelname)s: %%(message)s'
1732
% server_settings[u"servicename"]))
2103
1733
2104
1734
# Parse config file with clients
2105
client_config = configparser.SafeConfigParser(Client
2106
.client_defaults)
2107
client_config.read(os.path.join(server_settings["configdir"],
2108
"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"))
2109
1745
2110
1746
global mandos_dbus_service
2111
1747
mandos_dbus_service = None
2112
1748
2113
tcp_server = MandosServer((server_settings["address"],
2114
server_settings["port"]),
1749
tcp_server = MandosServer((server_settings[u"address"],
1750
server_settings[u"port"]),
2115
1751
ClientHandler,
2116
interface=(server_settings["interface"]
1752
interface=(server_settings[u"interface"]
2117
1753
or None),
2118
1754
use_ipv6=use_ipv6,
2119
1755
gnutls_priority=
2120
server_settings["priority"],
1756
server_settings[u"priority"],
2121
1757
use_dbus=use_dbus)
2122
if not debug:
2123
pidfilename = "/var/run/mandos.pid"
2124
try:
2125
pidfile = open(pidfilename, "w")
2126
except IOError:
2127
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)
2128
1763
2129
1764
try:
2130
uid = pwd.getpwnam("_mandos").pw_uid
2131
gid = pwd.getpwnam("_mandos").pw_gid
1765
uid = pwd.getpwnam(u"_mandos").pw_uid
1766
gid = pwd.getpwnam(u"_mandos").pw_gid
2132
1767
except KeyError:
2133
1768
try:
2134
uid = pwd.getpwnam("mandos").pw_uid
2135
gid = pwd.getpwnam("mandos").pw_gid
1769
uid = pwd.getpwnam(u"mandos").pw_uid
1770
gid = pwd.getpwnam(u"mandos").pw_gid
2136
1771
except KeyError:
2137
1772
try:
2138
uid = pwd.getpwnam("nobody").pw_uid
2139
gid = pwd.getpwnam("nobody").pw_gid
1773
uid = pwd.getpwnam(u"nobody").pw_uid
1774
gid = pwd.getpwnam(u"nobody").pw_gid
2140
1775
except KeyError:
2141
1776
uid = 65534
2142
1777
gid = 65534
2143
1778
try:
2144
1779
os.setgid(gid)
2145
1780
os.setuid(uid)
2146
except OSError as error:
1781
except OSError, error:
2147
1782
if error[0] != errno.EPERM:
2148
1783
raise error
2149
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
2150
1793
if debug:
2151
1794
# Enable all possible GnuTLS debugging
2152
1795
2156
1799
2157
1800
@gnutls.library.types.gnutls_log_func
2158
1801
def debug_gnutls(level, string):
2159
logger.debug("GnuTLS: %s", string[:-1])
1802
logger.debug(u"GnuTLS: %s", string[:-1])
2160
1803
2161
1804
(gnutls.library.functions
2162
1805
.gnutls_global_set_log_function(debug_gnutls))
2166
1809
os.dup2(null, sys.stdin.fileno())
2167
1810
if null > 2:
2168
1811
os.close(null)
2169
2170
# Need to fork before connecting to D-Bus
2171
if not debug:
2172
# Close all input and output, do double fork, etc.
2173
daemon()
2174
2175
gobject.threads_init()
1812
else:
1813
# No console logging
1814
logger.removeHandler(console)
1815
2176
1816
2177
1817
global main_loop
2178
1818
# From the Avahi example code
2182
1822
# End of Avahi example code
2183
1823
if use_dbus:
2184
1824
try:
2185
bus_name = dbus.service.BusName("se.recompile.Mandos",
1825
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2186
1826
bus, do_not_queue=True)
2187
old_bus_name = (dbus.service.BusName
2188
("se.bsnet.fukt.Mandos", bus,
2189
do_not_queue=True))
2190
except dbus.exceptions.NameExistsException as e:
2191
logger.error(unicode(e) + ", disabling D-Bus")
1827
except dbus.exceptions.NameExistsException, e:
1828
logger.error(unicode(e) + u", disabling D-Bus")
2192
1829
use_dbus = False
2193
server_settings["use_dbus"] = False
1830
server_settings[u"use_dbus"] = False
2194
1831
tcp_server.use_dbus = False
2195
1832
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2196
service = AvahiServiceToSyslog(name =
2197
server_settings["servicename"],
2198
servicetype = "_mandos._tcp",
2199
protocol = protocol, bus = bus)
1833
service = AvahiService(name = server_settings[u"servicename"],
1834
servicetype = u"_mandos._tcp",
1835
protocol = protocol, bus = bus)
2200
1836
if server_settings["interface"]:
2201
1837
service.interface = (if_nametoindex
2202
(str(server_settings["interface"])))
2203
1838
(str(server_settings[u"interface"])))
1839
1840
if not debug:
1841
# Close all input and output, do double fork, etc.
1842
daemon()
1843
2204
1844
global multiprocessing_manager
2205
1845
multiprocessing_manager = multiprocessing.Manager()
2206
1846
2207
1847
client_class = Client
2208
1848
if use_dbus:
2209
client_class = functools.partial(ClientDBusTransitional,
2210
bus = bus)
2211
2212
client_settings = Client.config_parser(client_config)
2213
old_client_settings = {}
2214
clients_data = {}
2215
2216
# Get client data and settings from last running state.
2217
if server_settings["restore"]:
2218
try:
2219
with open(stored_state_path, "rb") as stored_state:
2220
clients_data, old_client_settings = (pickle.load
2221
(stored_state))
2222
os.remove(stored_state_path)
2223
except IOError as e:
2224
logger.warning("Could not load persistent state: {0}"
2225
.format(e))
2226
if e.errno != errno.ENOENT:
2227
raise
2228
except EOFError as e:
2229
logger.warning("Could not load persistent state: "
2230
"EOFError: {0}".format(e))
2231
2232
with PGPEngine() as pgp:
2233
for client_name, client in clients_data.iteritems():
2234
# Decide which value to use after restoring saved state.
2235
# We have three different values: Old config file,
2236
# new config file, and saved state.
2237
# New config value takes precedence if it differs from old
2238
# config value, otherwise use saved state.
2239
for name, value in client_settings[client_name].items():
2240
try:
2241
# For each value in new config, check if it
2242
# differs from the old config value (Except for
2243
# the "secret" attribute)
2244
if (name != "secret" and
2245
value != old_client_settings[client_name]
2246
[name]):
2247
client[name] = value
2248
except KeyError:
2249
pass
2250
2251
# Clients who has passed its expire date can still be
2252
# enabled if its last checker was successful. Clients
2253
# whose checker failed before we stored its state is
2254
# assumed to have failed all checkers during downtime.
2255
if client["enabled"]:
2256
if datetime.datetime.utcnow() >= client["expires"]:
2257
if not client["last_checked_ok"]:
2258
logger.warning(
2259
"disabling client {0} - Client never "
2260
"performed a successfull checker"
2261
.format(client["name"]))
2262
client["enabled"] = False
2263
elif client["last_checker_status"] != 0:
2264
logger.warning(
2265
"disabling client {0} - Client "
2266
"last checker failed with error code {1}"
2267
.format(client["name"],
2268
client["last_checker_status"]))
2269
client["enabled"] = False
2270
else:
2271
client["expires"] = (datetime.datetime
2272
.utcnow()
2273
+ client["timeout"])
2274
logger.debug("Last checker succeeded,"
2275
" keeping {0} enabled"
2276
.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):
2277
1857
try:
2278
client["secret"] = (
2279
pgp.decrypt(client["encrypted_secret"],
2280
client_settings[client_name]
2281
["secret"]))
2282
except PGPError:
2283
# If decryption fails, we use secret from new settings
2284
logger.debug("Failed to decrypt {0} old secret"
2285
.format(client_name))
2286
client["secret"] = (
2287
client_settings[client_name]["secret"])
2288
2289
2290
# Add/remove clients based on new changes made to config
2291
for client_name in (set(old_client_settings)
2292
- set(client_settings)):
2293
del clients_data[client_name]
2294
for client_name in (set(client_settings)
2295
- set(old_client_settings)):
2296
clients_data[client_name] = client_settings[client_name]
2297
2298
# Create clients all clients
2299
for client_name, client in clients_data.iteritems():
2300
tcp_server.clients[client_name] = client_class(
2301
name = client_name, settings = client)
2302
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()))
2303
1867
if not tcp_server.clients:
2304
logger.warning("No clients defined")
1868
logger.warning(u"No clients defined")
2305
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
2306
1883
if not debug:
2307
try:
2308
with pidfile:
2309
pid = os.getpid()
2310
pidfile.write(str(pid) + "\n".encode("utf-8"))
2311
del pidfile
2312
except IOError:
2313
logger.error("Could not write to file %r with PID %d",
2314
pidfilename, pid)
2315
except NameError:
2316
# "pidfile" was never created
2317
pass
2318
del pidfilename
2319
1884
signal.signal(signal.SIGINT, signal.SIG_IGN)
2320
2321
1885
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2322
1886
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2323
1887
2325
1889
class MandosDBusService(dbus.service.Object):
2326
1890
"""A D-Bus proxy object"""
2327
1891
def __init__(self):
2328
dbus.service.Object.__init__(self, bus, "/")
2329
_interface = "se.recompile.Mandos"
1892
dbus.service.Object.__init__(self, bus, u"/")
1893
_interface = u"se.bsnet.fukt.Mandos"
2330
1894
2331
@dbus.service.signal(_interface, signature="o")
1895
@dbus.service.signal(_interface, signature=u"o")
2332
1896
def ClientAdded(self, objpath):
2333
1897
"D-Bus signal"
2334
1898
pass
2335
1899
2336
@dbus.service.signal(_interface, signature="ss")
1900
@dbus.service.signal(_interface, signature=u"ss")
2337
1901
def ClientNotFound(self, fingerprint, address):
2338
1902
"D-Bus signal"
2339
1903
pass
2340
1904
2341
@dbus.service.signal(_interface, signature="os")
1905
@dbus.service.signal(_interface, signature=u"os")
2342
1906
def ClientRemoved(self, objpath, name):
2343
1907
"D-Bus signal"
2344
1908
pass
2345
1909
2346
@dbus.service.method(_interface, out_signature="ao")
1910
@dbus.service.method(_interface, out_signature=u"ao")
2347
1911
def GetAllClients(self):
2348
1912
"D-Bus method"
2349
1913
return dbus.Array(c.dbus_object_path
2350
for c in
2351
tcp_server.clients.itervalues())
1914
for c in tcp_server.clients)
2352
1915
2353
1916
@dbus.service.method(_interface,
2354
out_signature="a{oa{sv}}")
1917
out_signature=u"a{oa{sv}}")
2355
1918
def GetAllClientsWithProperties(self):
2356
1919
"D-Bus method"
2357
1920
return dbus.Dictionary(
2358
((c.dbus_object_path, c.GetAll(""))
2359
for c in tcp_server.clients.itervalues()),
2360
signature="oa{sv}")
1921
((c.dbus_object_path, c.GetAll(u""))
1922
for c in tcp_server.clients),
1923
signature=u"oa{sv}")
2361
1924
2362
@dbus.service.method(_interface, in_signature="o")
1925
@dbus.service.method(_interface, in_signature=u"o")
2363
1926
def RemoveClient(self, object_path):
2364
1927
"D-Bus method"
2365
for c in tcp_server.clients.itervalues():
1928
for c in tcp_server.clients:
2366
1929
if c.dbus_object_path == object_path:
2367
del tcp_server.clients[c.name]
1930
tcp_server.clients.remove(c)
2368
1931
c.remove_from_connection()
2369
1932
# Don't signal anything except ClientRemoved
2370
1933
c.disable(quiet=True)
2375
1938
2376
1939
del _interface
2377
1940
2378
class MandosDBusServiceTransitional(MandosDBusService):
2379
__metaclass__ = AlternateDBusNamesMetaclass
2380
mandos_dbus_service = MandosDBusServiceTransitional()
1941
mandos_dbus_service = MandosDBusService()
2381
1942
2382
1943
def cleanup():
2383
1944
"Cleanup function; run on exit"
2384
1945
service.cleanup()
2385
1946
2386
multiprocessing.active_children()
2387
if not (tcp_server.clients or client_settings):
2388
return
2389
2390
# Store client before exiting. Secrets are encrypted with key
2391
# based on what config file has. If config file is
2392
# removed/edited, old secret will thus be unrecovable.
2393
clients = {}
2394
with PGPEngine() as pgp:
2395
for client in tcp_server.clients.itervalues():
2396
key = client_settings[client.name]["secret"]
2397
client.encrypted_secret = pgp.encrypt(client.secret,
2398
key)
2399
client_dict = {}
2400
2401
# A list of attributes that can not be pickled
2402
# + secret.
2403
exclude = set(("bus", "changedstate", "secret",
2404
"checker"))
2405
for name, typ in (inspect.getmembers
2406
(dbus.service.Object)):
2407
exclude.add(name)
2408
2409
client_dict["encrypted_secret"] = (client
2410
.encrypted_secret)
2411
for attr in client.client_structure:
2412
if attr not in exclude:
2413
client_dict[attr] = getattr(client, attr)
2414
2415
clients[client.name] = client_dict
2416
del client_settings[client.name]["secret"]
2417
2418
try:
2419
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2420
prefix="clients-",
2421
dir=os.path.dirname
2422
(stored_state_path))
2423
with os.fdopen(tempfd, "wb") as stored_state:
2424
pickle.dump((clients, client_settings), stored_state)
2425
os.rename(tempname, stored_state_path)
2426
except (IOError, OSError) as e:
2427
logger.warning("Could not save persistent state: {0}"
2428
.format(e))
2429
if not debug:
2430
try:
2431
os.remove(tempname)
2432
except NameError:
2433
pass
2434
if e.errno not in set((errno.ENOENT, errno.EACCES,
2435
errno.EEXIST)):
2436
raise e
2437
2438
# Delete all clients, and settings from config
2439
1947
while tcp_server.clients:
2440
name, client = tcp_server.clients.popitem()
1948
client = tcp_server.clients.pop()
2441
1949
if use_dbus:
2442
1950
client.remove_from_connection()
1951
client.disable_hook = None
2443
1952
# Don't signal anything except ClientRemoved
2444
1953
client.disable(quiet=True)
2445
1954
if use_dbus:
2446
1955
# Emit D-Bus signal
2447
mandos_dbus_service.ClientRemoved(client
2448
.dbus_object_path,
1956
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2449
1957
client.name)
2450
client_settings.clear()
2451
1958
2452
1959
atexit.register(cleanup)
2453
1960
2454
for client in tcp_server.clients.itervalues():
1961
for client in tcp_server.clients:
2455
1962
if use_dbus:
2456
1963
# Emit D-Bus signal
2457
1964
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2458
# Need to initiate checking of clients
2459
if client.enabled:
2460
client.init_checker()
1965
client.enable()
2461
1966
2462
1967
tcp_server.enable()
2463
1968
tcp_server.server_activate()
2465
1970
# Find out what port we got
2466
1971
service.port = tcp_server.socket.getsockname()[1]
2467
1972
if use_ipv6:
2468
logger.info("Now listening on address %r, port %d,"
1973
logger.info(u"Now listening on address %r, port %d,"
2469
1974
" flowinfo %d, scope_id %d"
2470
1975
% tcp_server.socket.getsockname())
2471
1976
else: # IPv4
2472
logger.info("Now listening on address %r, port %d"
1977
logger.info(u"Now listening on address %r, port %d"
2473
1978
% tcp_server.socket.getsockname())
2474
1979
2475
1980
#service.interface = tcp_server.socket.getsockname()[3]
2478
1983
# From the Avahi example code
2479
1984
try:
2480
1985
service.activate()
2481
except dbus.exceptions.DBusException as error:
2482
logger.critical("DBusException: %s", error)
1986
except dbus.exceptions.DBusException, error:
1987
logger.critical(u"DBusException: %s", error)
2483
1988
cleanup()
2484
1989
sys.exit(1)
2485
1990
# End of Avahi example code
2489
1994
(tcp_server.handle_request
2490
1995
(*args[2:], **kwargs) or True))
2491
1996
2492
logger.debug("Starting main loop")
1997
logger.debug(u"Starting main loop")
2493
1998
main_loop.run()
2494
except AvahiError as error:
2495
logger.critical("AvahiError: %s", error)
1999
except AvahiError, error:
2000
logger.critical(u"AvahiError: %s", error)
2496
2001
cleanup()
2497
2002
sys.exit(1)
2498
2003
except KeyboardInterrupt:
2499
2004
if debug:
2500
print("", file=sys.stderr)
2501
logger.debug("Server received KeyboardInterrupt")
2502
logger.debug("Server exiting")
2005
print >> sys.stderr
2006
logger.debug(u"Server received KeyboardInterrupt")
2007
logger.debug(u"Server exiting")
2503
2008
# Must run before the D-Bus bus name gets deregistered
2504
2009
cleanup()
2505
2010
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0