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- Committer: Teddy Hogeborn
- Date: 2009-12-27 03:35:58 UTC
- Revision ID: teddy@fukt.bsnet.se-20091227033558-y57wv1u4cls3i8kq
TODO file changes.
- files removed:
- DBUS-API
- 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 © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
14
# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
34
from __future__ import division, with_statement, absolute_import
36
35
37
36
import SocketServer as socketserver
38
37
import socket
39
import argparse
38
import optparse
40
39
import datetime
41
40
import errno
42
41
import gnutls.crypto
61
60
import fcntl
62
61
import functools
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62
import cPickle as pickle
64
import multiprocessing
65
import types
66
import binascii
67
import tempfile
68
63
69
64
import dbus
70
65
import dbus.service
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70
import ctypes.util
76
71
import xml.dom.minidom
77
72
import inspect
78
import GnuPGInterface
79
73
80
74
try:
81
75
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
79
except ImportError:
86
80
SO_BINDTODEVICE = None
87
81
88
version = "1.4.1"
89
stored_state_file = "clients.pickle"
90
91
logger = logging.getLogger()
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version = "1.0.14"
84
85
logger = logging.Logger(u'mandos')
92
86
syslogger = (logging.handlers.SysLogHandler
93
87
(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(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
console = logging.StreamHandler()
122
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
123
' [%(process)d]:'
124
' %(levelname)s:'
125
' %(message)s'))
126
logger.addHandler(console)
127
logger.setLevel(level)
128
129
130
class PGPError(Exception):
131
"""Exception if encryption/decryption fails"""
132
pass
133
134
135
class PGPEngine(object):
136
"""A simple class for OpenPGP symmetric encryption & decryption"""
137
def __init__(self):
138
self.gnupg = GnuPGInterface.GnuPG()
139
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.gnupg.options.meta_interactive = False
142
self.gnupg.options.homedir = self.tempdir
143
self.gnupg.options.extra_args.extend(['--force-mdc',
144
'--quiet'])
145
146
def __enter__(self):
147
return self
148
149
def __exit__ (self, exc_type, exc_value, traceback):
150
self._cleanup()
151
return False
152
153
def __del__(self):
154
self._cleanup()
155
156
def _cleanup(self):
157
if self.tempdir is not None:
158
# Delete contents of tempdir
159
for root, dirs, files in os.walk(self.tempdir,
160
topdown = False):
161
for filename in files:
162
os.remove(os.path.join(root, filename))
163
for dirname in dirs:
164
os.rmdir(os.path.join(root, dirname))
165
# Remove tempdir
166
os.rmdir(self.tempdir)
167
self.tempdir = None
168
169
def password_encode(self, password):
170
# Passphrase can not be empty and can not contain newlines or
171
# NUL bytes. So we prefix it and hex encode it.
172
return b"mandos" + binascii.hexlify(password)
173
174
def encrypt(self, data, password):
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
177
try:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
182
f.write(data)
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
185
proc.wait()
186
except IOError as e:
187
raise PGPError(e)
188
self.gnupg.passphrase = None
189
return ciphertext
190
191
def decrypt(self, data, password):
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
194
try:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
199
f.write(data)
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
202
proc.wait()
203
except IOError as e:
204
raise PGPError(e)
205
self.gnupg.passphrase = None
206
return decrypted_plaintext
207
208
88
address = "/dev/log"))
89
syslogger.setFormatter(logging.Formatter
90
(u'Mandos [%(process)d]: %(levelname)s:'
91
u' %(message)s'))
92
logger.addHandler(syslogger)
93
94
console = logging.StreamHandler()
95
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
96
u' %(levelname)s:'
97
u' %(message)s'))
98
logger.addHandler(console)
209
99
210
100
class AvahiError(Exception):
211
101
def __init__(self, value, *args, **kwargs):
227
117
Attributes:
228
118
interface: integer; avahi.IF_UNSPEC or an interface index.
229
119
Used to optionally bind to the specified interface.
230
name: string; Example: 'Mandos'
231
type: string; Example: '_mandos._tcp'.
120
name: string; Example: u'Mandos'
121
type: string; Example: u'_mandos._tcp'.
232
122
See <http://www.dns-sd.org/ServiceTypes.html>
233
123
port: integer; what port to announce
234
124
TXT: list of strings; TXT record for the service
243
133
"""
244
134
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
245
135
servicetype = None, port = None, TXT = None,
246
domain = "", host = "", max_renames = 32768,
136
domain = u"", host = u"", max_renames = 32768,
247
137
protocol = avahi.PROTO_UNSPEC, bus = None):
248
138
self.interface = interface
249
139
self.name = name
258
148
self.group = None # our entry group
259
149
self.server = None
260
150
self.bus = bus
261
self.entry_group_state_changed_match = None
262
151
def rename(self):
263
152
"""Derived from the Avahi example code"""
264
153
if self.rename_count >= self.max_renames:
265
logger.critical("No suitable Zeroconf service name found"
266
" after %i retries, exiting.",
154
logger.critical(u"No suitable Zeroconf service name found"
155
u" after %i retries, exiting.",
267
156
self.rename_count)
268
raise AvahiServiceError("Too many renames")
269
self.name = unicode(self.server
270
.GetAlternativeServiceName(self.name))
271
logger.info("Changing Zeroconf service name to %r ...",
272
self.name)
157
raise AvahiServiceError(u"Too many renames")
158
self.name = self.server.GetAlternativeServiceName(self.name)
159
logger.info(u"Changing Zeroconf service name to %r ...",
160
unicode(self.name))
161
syslogger.setFormatter(logging.Formatter
162
(u'Mandos (%s) [%%(process)d]:'
163
u' %%(levelname)s: %%(message)s'
164
% self.name))
273
165
self.remove()
274
try:
275
self.add()
276
except dbus.exceptions.DBusException as error:
277
logger.critical("DBusException: %s", error)
278
self.cleanup()
279
os._exit(1)
166
self.add()
280
167
self.rename_count += 1
281
168
def remove(self):
282
169
"""Derived from the Avahi example code"""
283
if self.entry_group_state_changed_match is not None:
284
self.entry_group_state_changed_match.remove()
285
self.entry_group_state_changed_match = None
286
170
if self.group is not None:
287
171
self.group.Reset()
288
172
def add(self):
289
173
"""Derived from the Avahi example code"""
290
self.remove()
291
174
if self.group is None:
292
175
self.group = dbus.Interface(
293
176
self.bus.get_object(avahi.DBUS_NAME,
294
177
self.server.EntryGroupNew()),
295
178
avahi.DBUS_INTERFACE_ENTRY_GROUP)
296
self.entry_group_state_changed_match = (
297
self.group.connect_to_signal(
298
'StateChanged', self.entry_group_state_changed))
299
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
179
self.group.connect_to_signal('StateChanged',
180
self
181
.entry_group_state_changed)
182
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
300
183
self.name, self.type)
301
184
self.group.AddService(
302
185
self.interface,
309
192
self.group.Commit()
310
193
def entry_group_state_changed(self, state, error):
311
194
"""Derived from the Avahi example code"""
312
logger.debug("Avahi entry group state change: %i", state)
195
logger.debug(u"Avahi state change: %i", state)
313
196
314
197
if state == avahi.ENTRY_GROUP_ESTABLISHED:
315
logger.debug("Zeroconf service established.")
198
logger.debug(u"Zeroconf service established.")
316
199
elif state == avahi.ENTRY_GROUP_COLLISION:
317
logger.info("Zeroconf service name collision.")
200
logger.warning(u"Zeroconf service name collision.")
318
201
self.rename()
319
202
elif state == avahi.ENTRY_GROUP_FAILURE:
320
logger.critical("Avahi: Error in group state changed %s",
203
logger.critical(u"Avahi: Error in group state changed %s",
321
204
unicode(error))
322
raise AvahiGroupError("State changed: %s"
205
raise AvahiGroupError(u"State changed: %s"
323
206
% unicode(error))
324
207
def cleanup(self):
325
208
"""Derived from the Avahi example code"""
326
209
if self.group is not None:
327
try:
328
self.group.Free()
329
except (dbus.exceptions.UnknownMethodException,
330
dbus.exceptions.DBusException):
331
pass
210
self.group.Free()
332
211
self.group = None
333
self.remove()
334
def server_state_changed(self, state, error=None):
212
def server_state_changed(self, state):
335
213
"""Derived from the Avahi example code"""
336
logger.debug("Avahi server state change: %i", state)
337
bad_states = { avahi.SERVER_INVALID:
338
"Zeroconf server invalid",
339
avahi.SERVER_REGISTERING: None,
340
avahi.SERVER_COLLISION:
341
"Zeroconf server name collision",
342
avahi.SERVER_FAILURE:
343
"Zeroconf server failure" }
344
if state in bad_states:
345
if bad_states[state] is not None:
346
if error is None:
347
logger.error(bad_states[state])
348
else:
349
logger.error(bad_states[state] + ": %r", error)
350
self.cleanup()
214
if state == avahi.SERVER_COLLISION:
215
logger.error(u"Zeroconf server name collision")
216
self.remove()
351
217
elif state == avahi.SERVER_RUNNING:
352
218
self.add()
353
else:
354
if error is None:
355
logger.debug("Unknown state: %r", state)
356
else:
357
logger.debug("Unknown state: %r: %r", state, error)
358
219
def activate(self):
359
220
"""Derived from the Avahi example code"""
360
221
if self.server is None:
361
222
self.server = dbus.Interface(
362
223
self.bus.get_object(avahi.DBUS_NAME,
363
avahi.DBUS_PATH_SERVER,
364
follow_name_owner_changes=True),
224
avahi.DBUS_PATH_SERVER),
365
225
avahi.DBUS_INTERFACE_SERVER)
366
self.server.connect_to_signal("StateChanged",
226
self.server.connect_to_signal(u"StateChanged",
367
227
self.server_state_changed)
368
228
self.server_state_changed(self.server.GetState())
369
229
370
class AvahiServiceToSyslog(AvahiService):
371
def rename(self):
372
"""Add the new name to the syslog messages"""
373
ret = AvahiService.rename(self)
374
syslogger.setFormatter(logging.Formatter
375
('Mandos (%s) [%%(process)d]:'
376
' %%(levelname)s: %%(message)s'
377
% self.name))
378
return ret
379
230
380
def timedelta_to_milliseconds(td):
381
"Convert a datetime.timedelta() to milliseconds"
382
return ((td.days * 24 * 60 * 60 * 1000)
383
+ (td.seconds * 1000)
384
+ (td.microseconds // 1000))
385
386
231
class Client(object):
387
232
"""A representation of a client host served by this server.
388
233
389
234
Attributes:
390
approved: bool(); 'None' if not yet approved/disapproved
391
approval_delay: datetime.timedelta(); Time to wait for approval
392
approval_duration: datetime.timedelta(); Duration of one approval
235
name: string; from the config file, used in log messages and
236
D-Bus identifiers
237
fingerprint: string (40 or 32 hexadecimal digits); used to
238
uniquely identify the client
239
secret: bytestring; sent verbatim (over TLS) to client
240
host: string; available for use by the checker command
241
created: datetime.datetime(); (UTC) object creation
242
last_enabled: datetime.datetime(); (UTC)
243
enabled: bool()
244
last_checked_ok: datetime.datetime(); (UTC) or None
245
timeout: datetime.timedelta(); How long from last_checked_ok
246
until this client is disabled
247
interval: datetime.timedelta(); How often to start a new checker
248
disable_hook: If set, called by disable() as disable_hook(self)
393
249
checker: subprocess.Popen(); a running checker process used
394
250
to see if the client lives.
395
251
'None' if no process is running.
396
checker_callback_tag: a gobject event source tag, or None
397
checker_command: string; External command which is run to check
398
if client lives. %() expansions are done at
252
checker_initiator_tag: a gobject event source tag, or None
253
disable_initiator_tag: - '' -
254
checker_callback_tag: - '' -
255
checker_command: string; External command which is run to check if
256
client lives. %() expansions are done at
399
257
runtime with vars(self) as dict, so that for
400
258
instance %(name)s can be used in the command.
401
checker_initiator_tag: a gobject event source tag, or None
402
created: datetime.datetime(); (UTC) object creation
403
client_structure: Object describing what attributes a client has
404
and is used for storing the client at exit
405
259
current_checker_command: string; current running checker_command
406
disable_initiator_tag: a gobject event source tag, or None
407
enabled: bool()
408
fingerprint: string (40 or 32 hexadecimal digits); used to
409
uniquely identify the client
410
host: string; available for use by the checker command
411
interval: datetime.timedelta(); How often to start a new checker
412
last_approval_request: datetime.datetime(); (UTC) or None
413
last_checked_ok: datetime.datetime(); (UTC) or None
414
last_checker_status: integer between 0 and 255 reflecting exit
415
status of last checker. -1 reflects crashed
416
checker, or None.
417
last_enabled: datetime.datetime(); (UTC) or None
418
name: string; from the config file, used in log messages and
419
D-Bus identifiers
420
secret: bytestring; sent verbatim (over TLS) to client
421
timeout: datetime.timedelta(); How long from last_checked_ok
422
until this client is disabled
423
extended_timeout: extra long timeout when password has been sent
424
runtime_expansions: Allowed attributes for runtime expansion.
425
expires: datetime.datetime(); time (UTC) when a client will be
426
disabled, or None
427
260
"""
428
261
429
runtime_expansions = ("approval_delay", "approval_duration",
430
"created", "enabled", "fingerprint",
431
"host", "interval", "last_checked_ok",
432
"last_enabled", "name", "timeout")
433
client_defaults = { "timeout": "5m",
434
"extended_timeout": "15m",
435
"interval": "2m",
436
"checker": "fping -q -- %%(host)s",
437
"host": "",
438
"approval_delay": "0s",
439
"approval_duration": "1s",
440
"approved_by_default": "True",
441
"enabled": "True",
442
}
262
@staticmethod
263
def _timedelta_to_milliseconds(td):
264
"Convert a datetime.timedelta() to milliseconds"
265
return ((td.days * 24 * 60 * 60 * 1000)
266
+ (td.seconds * 1000)
267
+ (td.microseconds // 1000))
443
268
444
269
def timeout_milliseconds(self):
445
270
"Return the 'timeout' attribute in milliseconds"
446
return timedelta_to_milliseconds(self.timeout)
447
448
def extended_timeout_milliseconds(self):
449
"Return the 'extended_timeout' attribute in milliseconds"
450
return timedelta_to_milliseconds(self.extended_timeout)
271
return self._timedelta_to_milliseconds(self.timeout)
451
272
452
273
def interval_milliseconds(self):
453
274
"Return the 'interval' attribute in milliseconds"
454
return timedelta_to_milliseconds(self.interval)
275
return self._timedelta_to_milliseconds(self.interval)
455
276
456
def approval_delay_milliseconds(self):
457
return timedelta_to_milliseconds(self.approval_delay)
458
459
@staticmethod
460
def config_parser(config):
461
""" Construct a new dict of client settings of this form:
462
{ client_name: {setting_name: value, ...}, ...}
463
with exceptions for any special settings as defined above"""
464
settings = {}
465
for client_name in config.sections():
466
section = dict(config.items(client_name))
467
client = settings[client_name] = {}
468
469
client["host"] = section["host"]
470
# Reformat values from string types to Python types
471
client["approved_by_default"] = config.getboolean(
472
client_name, "approved_by_default")
473
client["enabled"] = config.getboolean(client_name, "enabled")
474
475
client["fingerprint"] = (section["fingerprint"].upper()
476
.replace(" ", ""))
477
if "secret" in section:
478
client["secret"] = section["secret"].decode("base64")
479
elif "secfile" in section:
480
with open(os.path.expanduser(os.path.expandvars
481
(section["secfile"])),
482
"rb") as secfile:
483
client["secret"] = secfile.read()
484
else:
485
raise TypeError("No secret or secfile for section %s"
486
% section)
487
client["timeout"] = string_to_delta(section["timeout"])
488
client["extended_timeout"] = string_to_delta(
489
section["extended_timeout"])
490
client["interval"] = string_to_delta(section["interval"])
491
client["approval_delay"] = string_to_delta(
492
section["approval_delay"])
493
client["approval_duration"] = string_to_delta(
494
section["approval_duration"])
495
client["checker_command"] = section["checker"]
496
client["last_approval_request"] = None
497
client["last_checked_ok"] = None
498
client["last_checker_status"] = None
499
if client["enabled"]:
500
client["last_enabled"] = datetime.datetime.utcnow()
501
client["expires"] = (datetime.datetime.utcnow()
502
+ client["timeout"])
503
else:
504
client["last_enabled"] = None
505
client["expires"] = None
506
507
return settings
508
509
510
def __init__(self, settings, name = None):
277
def __init__(self, name = None, disable_hook=None, config=None):
511
278
"""Note: the 'checker' key in 'config' sets the
512
279
'checker_command' attribute and *not* the 'checker'
513
280
attribute."""
514
281
self.name = name
515
# adding all client settings
516
for setting, value in settings.iteritems():
517
setattr(self, setting, value)
518
519
logger.debug("Creating client %r", self.name)
282
if config is None:
283
config = {}
284
logger.debug(u"Creating client %r", self.name)
520
285
# Uppercase and remove spaces from fingerprint for later
521
286
# comparison purposes with return value from the fingerprint()
522
287
# function
523
logger.debug(" Fingerprint: %s", self.fingerprint)
524
self.created = settings.get("created", datetime.datetime.utcnow())
525
526
# attributes specific for this server instance
288
self.fingerprint = (config[u"fingerprint"].upper()
289
.replace(u" ", u""))
290
logger.debug(u" Fingerprint: %s", self.fingerprint)
291
if u"secret" in config:
292
self.secret = config[u"secret"].decode(u"base64")
293
elif u"secfile" in config:
294
with open(os.path.expanduser(os.path.expandvars
295
(config[u"secfile"])),
296
"rb") as secfile:
297
self.secret = secfile.read()
298
else:
299
raise TypeError(u"No secret or secfile for client %s"
300
% self.name)
301
self.host = config.get(u"host", u"")
302
self.created = datetime.datetime.utcnow()
303
self.enabled = False
304
self.last_enabled = None
305
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
308
self.disable_hook = disable_hook
527
309
self.checker = None
528
310
self.checker_initiator_tag = None
529
311
self.disable_initiator_tag = None
530
312
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
531
314
self.current_checker_command = None
532
self.approved = None
533
self.approvals_pending = 0
534
self.changedstate = (multiprocessing_manager
535
.Condition(multiprocessing_manager
536
.Lock()))
537
self.client_structure = [attr for attr in
538
self.__dict__.iterkeys()
539
if not attr.startswith("_")]
540
self.client_structure.append("client_structure")
541
542
for name, t in inspect.getmembers(type(self),
543
lambda obj:
544
isinstance(obj,
545
property)):
546
if not name.startswith("_"):
547
self.client_structure.append(name)
548
549
# Send notice to process children that client state has changed
550
def send_changedstate(self):
551
with self.changedstate:
552
self.changedstate.notify_all()
315
self.last_connect = None
553
316
554
317
def enable(self):
555
318
"""Start this client's checker and timeout hooks"""
556
if getattr(self, "enabled", False):
319
if getattr(self, u"enabled", False):
557
320
# Already enabled
558
321
return
559
self.send_changedstate()
560
self.expires = datetime.datetime.utcnow() + self.timeout
561
self.enabled = True
562
322
self.last_enabled = datetime.datetime.utcnow()
563
self.init_checker()
564
565
def disable(self, quiet=True):
566
"""Disable this client."""
567
if not getattr(self, "enabled", False):
568
return False
569
if not quiet:
570
self.send_changedstate()
571
if not quiet:
572
logger.info("Disabling client %s", self.name)
573
if getattr(self, "disable_initiator_tag", False):
574
gobject.source_remove(self.disable_initiator_tag)
575
self.disable_initiator_tag = None
576
self.expires = None
577
if getattr(self, "checker_initiator_tag", False):
578
gobject.source_remove(self.checker_initiator_tag)
579
self.checker_initiator_tag = None
580
self.stop_checker()
581
self.enabled = False
582
# Do not run this again if called by a gobject.timeout_add
583
return False
584
585
def __del__(self):
586
self.disable()
587
588
def init_checker(self):
589
323
# Schedule a new checker to be started an 'interval' from now,
590
324
# and every interval from then on.
591
325
self.checker_initiator_tag = (gobject.timeout_add
595
329
self.disable_initiator_tag = (gobject.timeout_add
596
330
(self.timeout_milliseconds(),
597
331
self.disable))
332
self.enabled = True
598
333
# Also start a new checker *right now*.
599
334
self.start_checker()
600
335
336
def disable(self, quiet=True):
337
"""Disable this client."""
338
if not getattr(self, "enabled", False):
339
return False
340
if not quiet:
341
logger.info(u"Disabling client %s", self.name)
342
if getattr(self, u"disable_initiator_tag", False):
343
gobject.source_remove(self.disable_initiator_tag)
344
self.disable_initiator_tag = None
345
if getattr(self, u"checker_initiator_tag", False):
346
gobject.source_remove(self.checker_initiator_tag)
347
self.checker_initiator_tag = None
348
self.stop_checker()
349
if self.disable_hook:
350
self.disable_hook(self)
351
self.enabled = False
352
# Do not run this again if called by a gobject.timeout_add
353
return False
354
355
def __del__(self):
356
self.disable_hook = None
357
self.disable()
358
601
359
def checker_callback(self, pid, condition, command):
602
360
"""The checker has completed, so take appropriate actions."""
603
361
self.checker_callback_tag = None
604
362
self.checker = None
605
363
if os.WIFEXITED(condition):
606
self.last_checker_status = os.WEXITSTATUS(condition)
607
if self.last_checker_status == 0:
608
logger.info("Checker for %(name)s succeeded",
364
exitstatus = os.WEXITSTATUS(condition)
365
if exitstatus == 0:
366
logger.info(u"Checker for %(name)s succeeded",
609
367
vars(self))
610
368
self.checked_ok()
611
369
else:
612
logger.info("Checker for %(name)s failed",
370
logger.info(u"Checker for %(name)s failed",
613
371
vars(self))
614
372
else:
615
self.last_checker_status = -1
616
logger.warning("Checker for %(name)s crashed?",
373
logger.warning(u"Checker for %(name)s crashed?",
617
374
vars(self))
618
375
619
def checked_ok(self, timeout=None):
376
def checked_ok(self):
620
377
"""Bump up the timeout for this client.
621
378
622
379
This should only be called when the client has been seen,
623
380
alive and well.
624
381
"""
625
if timeout is None:
626
timeout = self.timeout
627
382
self.last_checked_ok = datetime.datetime.utcnow()
628
if self.disable_initiator_tag is not None:
629
gobject.source_remove(self.disable_initiator_tag)
630
if getattr(self, "enabled", False):
631
self.disable_initiator_tag = (gobject.timeout_add
632
(timedelta_to_milliseconds
633
(timeout), self.disable))
634
self.expires = datetime.datetime.utcnow() + timeout
635
636
def need_approval(self):
637
self.last_approval_request = datetime.datetime.utcnow()
383
gobject.source_remove(self.disable_initiator_tag)
384
self.disable_initiator_tag = (gobject.timeout_add
385
(self.timeout_milliseconds(),
386
self.disable))
638
387
639
388
def start_checker(self):
640
389
"""Start a new checker subprocess if one is not running.
653
402
# If a checker exists, make sure it is not a zombie
654
403
try:
655
404
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
656
except (AttributeError, OSError) as error:
405
except (AttributeError, OSError), error:
657
406
if (isinstance(error, OSError)
658
407
and error.errno != errno.ECHILD):
659
408
raise error
660
409
else:
661
410
if pid:
662
logger.warning("Checker was a zombie")
411
logger.warning(u"Checker was a zombie")
663
412
gobject.source_remove(self.checker_callback_tag)
664
413
self.checker_callback(pid, status,
665
414
self.current_checker_command)
670
419
command = self.checker_command % self.host
671
420
except TypeError:
672
421
# Escape attributes for the shell
673
escaped_attrs = dict(
674
(attr,
675
re.escape(unicode(str(getattr(self, attr, "")),
676
errors=
677
'replace')))
678
for attr in
679
self.runtime_expansions)
680
422
escaped_attrs = dict((key,
423
re.escape(unicode(str(val),
424
errors=
425
u'replace')))
426
for key, val in
427
vars(self).iteritems())
681
428
try:
682
429
command = self.checker_command % escaped_attrs
683
except TypeError as error:
684
logger.error('Could not format string "%s":'
685
' %s', self.checker_command, error)
430
except TypeError, error:
431
logger.error(u'Could not format string "%s":'
432
u' %s', self.checker_command, error)
686
433
return True # Try again later
687
434
self.current_checker_command = command
688
435
try:
689
logger.info("Starting checker %r for %s",
436
logger.info(u"Starting checker %r for %s",
690
437
command, self.name)
691
438
# We don't need to redirect stdout and stderr, since
692
439
# in normal mode, that is already done by daemon(),
694
441
# always replaced by /dev/null.)
695
442
self.checker = subprocess.Popen(command,
696
443
close_fds=True,
697
shell=True, cwd="/")
444
shell=True, cwd=u"/")
698
445
self.checker_callback_tag = (gobject.child_watch_add
699
446
(self.checker.pid,
700
447
self.checker_callback,
705
452
if pid:
706
453
gobject.source_remove(self.checker_callback_tag)
707
454
self.checker_callback(pid, status, command)
708
except OSError as error:
709
logger.error("Failed to start subprocess: %s",
455
except OSError, error:
456
logger.error(u"Failed to start subprocess: %s",
710
457
error)
711
458
# Re-run this periodically if run by gobject.timeout_add
712
459
return True
716
463
if self.checker_callback_tag:
717
464
gobject.source_remove(self.checker_callback_tag)
718
465
self.checker_callback_tag = None
719
if getattr(self, "checker", None) is None:
466
if getattr(self, u"checker", None) is None:
720
467
return
721
logger.debug("Stopping checker for %(name)s", vars(self))
468
logger.debug(u"Stopping checker for %(name)s", vars(self))
722
469
try:
723
470
os.kill(self.checker.pid, signal.SIGTERM)
724
471
#time.sleep(0.5)
725
472
#if self.checker.poll() is None:
726
473
# os.kill(self.checker.pid, signal.SIGKILL)
727
except OSError as error:
474
except OSError, error:
728
475
if error.errno != errno.ESRCH: # No such process
729
476
raise
730
477
self.checker = None
731
478
732
479
733
def dbus_service_property(dbus_interface, signature="v",
734
access="readwrite", byte_arrays=False):
480
def dbus_service_property(dbus_interface, signature=u"v",
481
access=u"readwrite", byte_arrays=False):
735
482
"""Decorators for marking methods of a DBusObjectWithProperties to
736
483
become properties on the D-Bus.
737
484
744
491
"""
745
492
# Encoding deeply encoded byte arrays is not supported yet by the
746
493
# "Set" method, so we fail early here:
747
if byte_arrays and signature != "ay":
748
raise ValueError("Byte arrays not supported for non-'ay'"
749
" signature %r" % signature)
494
if byte_arrays and signature != u"ay":
495
raise ValueError(u"Byte arrays not supported for non-'ay'"
496
u" signature %r" % signature)
750
497
def decorator(func):
751
498
func._dbus_is_property = True
752
499
func._dbus_interface = dbus_interface
753
500
func._dbus_signature = signature
754
501
func._dbus_access = access
755
502
func._dbus_name = func.__name__
756
if func._dbus_name.endswith("_dbus_property"):
503
if func._dbus_name.endswith(u"_dbus_property"):
757
504
func._dbus_name = func._dbus_name[:-14]
758
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
505
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
759
506
return func
760
507
return decorator
761
508
781
528
782
529
class DBusObjectWithProperties(dbus.service.Object):
783
530
"""A D-Bus object with properties.
784
531
785
532
Classes inheriting from this can use the dbus_service_property
786
533
decorator to expose methods as D-Bus properties. It exposes the
787
534
standard Get(), Set(), and GetAll() methods on the D-Bus.
789
536
790
537
@staticmethod
791
538
def _is_dbus_property(obj):
792
return getattr(obj, "_dbus_is_property", False)
539
return getattr(obj, u"_dbus_is_property", False)
793
540
794
541
def _get_all_dbus_properties(self):
795
542
"""Returns a generator of (name, attribute) pairs
796
543
"""
797
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
798
for cls in self.__class__.__mro__
544
return ((prop._dbus_name, prop)
799
545
for name, prop in
800
inspect.getmembers(cls, self._is_dbus_property))
546
inspect.getmembers(self, self._is_dbus_property))
801
547
802
548
def _get_dbus_property(self, interface_name, property_name):
803
549
"""Returns a bound method if one exists which is a D-Bus
804
550
property with the specified name and interface.
805
551
"""
806
for cls in self.__class__.__mro__:
807
for name, value in (inspect.getmembers
808
(cls, self._is_dbus_property)):
809
if (value._dbus_name == property_name
810
and value._dbus_interface == interface_name):
811
return value.__get__(self)
812
552
for name in (property_name,
553
property_name + u"_dbus_property"):
554
prop = getattr(self, name, None)
555
if (prop is None
556
or not self._is_dbus_property(prop)
557
or prop._dbus_name != property_name
558
or (interface_name and prop._dbus_interface
559
and interface_name != prop._dbus_interface)):
560
continue
561
return prop
813
562
# No such property
814
raise DBusPropertyNotFound(self.dbus_object_path + ":"
815
+ interface_name + "."
563
raise DBusPropertyNotFound(self.dbus_object_path + u":"
564
+ interface_name + u"."
816
565
+ property_name)
817
566
818
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
819
out_signature="v")
567
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
568
out_signature=u"v")
820
569
def Get(self, interface_name, property_name):
821
570
"""Standard D-Bus property Get() method, see D-Bus standard.
822
571
"""
823
572
prop = self._get_dbus_property(interface_name, property_name)
824
if prop._dbus_access == "write":
573
if prop._dbus_access == u"write":
825
574
raise DBusPropertyAccessException(property_name)
826
575
value = prop()
827
if not hasattr(value, "variant_level"):
576
if not hasattr(value, u"variant_level"):
828
577
return value
829
578
return type(value)(value, variant_level=value.variant_level+1)
830
579
831
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
580
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
832
581
def Set(self, interface_name, property_name, value):
833
582
"""Standard D-Bus property Set() method, see D-Bus standard.
834
583
"""
835
584
prop = self._get_dbus_property(interface_name, property_name)
836
if prop._dbus_access == "read":
585
if prop._dbus_access == u"read":
837
586
raise DBusPropertyAccessException(property_name)
838
if prop._dbus_get_args_options["byte_arrays"]:
587
if prop._dbus_get_args_options[u"byte_arrays"]:
839
588
# The byte_arrays option is not supported yet on
840
589
# signatures other than "ay".
841
if prop._dbus_signature != "ay":
590
if prop._dbus_signature != u"ay":
842
591
raise ValueError
843
592
value = dbus.ByteArray(''.join(unichr(byte)
844
593
for byte in value))
845
594
prop(value)
846
595
847
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
848
out_signature="a{sv}")
596
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
597
out_signature=u"a{sv}")
849
598
def GetAll(self, interface_name):
850
599
"""Standard D-Bus property GetAll() method, see D-Bus
851
600
standard.
852
601
853
602
Note: Will not include properties with access="write".
854
603
"""
855
properties = {}
604
all = {}
856
605
for name, prop in self._get_all_dbus_properties():
857
606
if (interface_name
858
607
and interface_name != prop._dbus_interface):
859
608
# Interface non-empty but did not match
860
609
continue
861
610
# Ignore write-only properties
862
if prop._dbus_access == "write":
611
if prop._dbus_access == u"write":
863
612
continue
864
613
value = prop()
865
if not hasattr(value, "variant_level"):
866
properties[name] = value
614
if not hasattr(value, u"variant_level"):
615
all[name] = value
867
616
continue
868
properties[name] = type(value)(value, variant_level=
869
value.variant_level+1)
870
return dbus.Dictionary(properties, signature="sv")
617
all[name] = type(value)(value, variant_level=
618
value.variant_level+1)
619
return dbus.Dictionary(all, signature=u"sv")
871
620
872
621
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
873
out_signature="s",
622
out_signature=u"s",
874
623
path_keyword='object_path',
875
624
connection_keyword='connection')
876
625
def Introspect(self, object_path, connection):
881
630
try:
882
631
document = xml.dom.minidom.parseString(xmlstring)
883
632
def make_tag(document, name, prop):
884
e = document.createElement("property")
885
e.setAttribute("name", name)
886
e.setAttribute("type", prop._dbus_signature)
887
e.setAttribute("access", prop._dbus_access)
633
e = document.createElement(u"property")
634
e.setAttribute(u"name", name)
635
e.setAttribute(u"type", prop._dbus_signature)
636
e.setAttribute(u"access", prop._dbus_access)
888
637
return e
889
for if_tag in document.getElementsByTagName("interface"):
638
for if_tag in document.getElementsByTagName(u"interface"):
890
639
for tag in (make_tag(document, name, prop)
891
640
for name, prop
892
641
in self._get_all_dbus_properties()
893
642
if prop._dbus_interface
894
== if_tag.getAttribute("name")):
643
== if_tag.getAttribute(u"name")):
895
644
if_tag.appendChild(tag)
896
645
# Add the names to the return values for the
897
646
# "org.freedesktop.DBus.Properties" methods
898
if (if_tag.getAttribute("name")
899
== "org.freedesktop.DBus.Properties"):
900
for cn in if_tag.getElementsByTagName("method"):
901
if cn.getAttribute("name") == "Get":
902
for arg in cn.getElementsByTagName("arg"):
903
if (arg.getAttribute("direction")
904
== "out"):
905
arg.setAttribute("name", "value")
906
elif cn.getAttribute("name") == "GetAll":
907
for arg in cn.getElementsByTagName("arg"):
908
if (arg.getAttribute("direction")
909
== "out"):
910
arg.setAttribute("name", "props")
911
xmlstring = document.toxml("utf-8")
647
if (if_tag.getAttribute(u"name")
648
== u"org.freedesktop.DBus.Properties"):
649
for cn in if_tag.getElementsByTagName(u"method"):
650
if cn.getAttribute(u"name") == u"Get":
651
for arg in cn.getElementsByTagName(u"arg"):
652
if (arg.getAttribute(u"direction")
653
== u"out"):
654
arg.setAttribute(u"name", u"value")
655
elif cn.getAttribute(u"name") == u"GetAll":
656
for arg in cn.getElementsByTagName(u"arg"):
657
if (arg.getAttribute(u"direction")
658
== u"out"):
659
arg.setAttribute(u"name", u"props")
660
xmlstring = document.toxml(u"utf-8")
912
661
document.unlink()
913
662
except (AttributeError, xml.dom.DOMException,
914
xml.parsers.expat.ExpatError) as error:
915
logger.error("Failed to override Introspection method",
663
xml.parsers.expat.ExpatError), error:
664
logger.error(u"Failed to override Introspection method",
916
665
error)
917
666
return xmlstring
918
667
919
668
920
def datetime_to_dbus (dt, variant_level=0):
921
"""Convert a UTC datetime.datetime() to a D-Bus type."""
922
if dt is None:
923
return dbus.String("", variant_level = variant_level)
924
return dbus.String(dt.isoformat(),
925
variant_level=variant_level)
926
927
928
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
929
.__metaclass__):
930
"""Applied to an empty subclass of a D-Bus object, this metaclass
931
will add additional D-Bus attributes matching a certain pattern.
932
"""
933
def __new__(mcs, name, bases, attr):
934
# Go through all the base classes which could have D-Bus
935
# methods, signals, or properties in them
936
for base in (b for b in bases
937
if issubclass(b, dbus.service.Object)):
938
# Go though all attributes of the base class
939
for attrname, attribute in inspect.getmembers(base):
940
# Ignore non-D-Bus attributes, and D-Bus attributes
941
# with the wrong interface name
942
if (not hasattr(attribute, "_dbus_interface")
943
or not attribute._dbus_interface
944
.startswith("se.recompile.Mandos")):
945
continue
946
# Create an alternate D-Bus interface name based on
947
# the current name
948
alt_interface = (attribute._dbus_interface
949
.replace("se.recompile.Mandos",
950
"se.bsnet.fukt.Mandos"))
951
# Is this a D-Bus signal?
952
if getattr(attribute, "_dbus_is_signal", False):
953
# Extract the original non-method function by
954
# black magic
955
nonmethod_func = (dict(
956
zip(attribute.func_code.co_freevars,
957
attribute.__closure__))["func"]
958
.cell_contents)
959
# Create a new, but exactly alike, function
960
# object, and decorate it to be a new D-Bus signal
961
# with the alternate D-Bus interface name
962
new_function = (dbus.service.signal
963
(alt_interface,
964
attribute._dbus_signature)
965
(types.FunctionType(
966
nonmethod_func.func_code,
967
nonmethod_func.func_globals,
968
nonmethod_func.func_name,
969
nonmethod_func.func_defaults,
970
nonmethod_func.func_closure)))
971
# Define a creator of a function to call both the
972
# old and new functions, so both the old and new
973
# signals gets sent when the function is called
974
def fixscope(func1, func2):
975
"""This function is a scope container to pass
976
func1 and func2 to the "call_both" function
977
outside of its arguments"""
978
def call_both(*args, **kwargs):
979
"""This function will emit two D-Bus
980
signals by calling func1 and func2"""
981
func1(*args, **kwargs)
982
func2(*args, **kwargs)
983
return call_both
984
# Create the "call_both" function and add it to
985
# the class
986
attr[attrname] = fixscope(attribute,
987
new_function)
988
# Is this a D-Bus method?
989
elif getattr(attribute, "_dbus_is_method", False):
990
# Create a new, but exactly alike, function
991
# object. Decorate it to be a new D-Bus method
992
# with the alternate D-Bus interface name. Add it
993
# to the class.
994
attr[attrname] = (dbus.service.method
995
(alt_interface,
996
attribute._dbus_in_signature,
997
attribute._dbus_out_signature)
998
(types.FunctionType
999
(attribute.func_code,
1000
attribute.func_globals,
1001
attribute.func_name,
1002
attribute.func_defaults,
1003
attribute.func_closure)))
1004
# Is this a D-Bus property?
1005
elif getattr(attribute, "_dbus_is_property", False):
1006
# Create a new, but exactly alike, function
1007
# object, and decorate it to be a new D-Bus
1008
# property with the alternate D-Bus interface
1009
# name. Add it to the class.
1010
attr[attrname] = (dbus_service_property
1011
(alt_interface,
1012
attribute._dbus_signature,
1013
attribute._dbus_access,
1014
attribute
1015
._dbus_get_args_options
1016
["byte_arrays"])
1017
(types.FunctionType
1018
(attribute.func_code,
1019
attribute.func_globals,
1020
attribute.func_name,
1021
attribute.func_defaults,
1022
attribute.func_closure)))
1023
return type.__new__(mcs, name, bases, attr)
1024
1025
1026
669
class ClientDBus(Client, DBusObjectWithProperties):
1027
670
"""A Client class using D-Bus
1028
671
1030
673
dbus_object_path: dbus.ObjectPath
1031
674
bus: dbus.SystemBus()
1032
675
"""
1033
1034
runtime_expansions = (Client.runtime_expansions
1035
+ ("dbus_object_path",))
1036
1037
676
# dbus.service.Object doesn't use super(), so we can't either.
1038
677
1039
678
def __init__(self, bus = None, *args, **kwargs):
1040
679
self.bus = bus
1041
680
Client.__init__(self, *args, **kwargs)
1042
self._approvals_pending = 0
1043
1044
self._approvals_pending = 0
1045
681
# Only now, when this client is initialized, can it show up on
1046
682
# the D-Bus
1047
client_object_name = unicode(self.name).translate(
1048
{ord("."): ord("_"),
1049
ord("-"): ord("_")})
1050
683
self.dbus_object_path = (dbus.ObjectPath
1051
("/clients/" + client_object_name))
684
(u"/clients/"
685
+ self.name.replace(u".", u"_")))
1052
686
DBusObjectWithProperties.__init__(self, self.bus,
1053
687
self.dbus_object_path)
1054
1055
def notifychangeproperty(transform_func,
1056
dbus_name, type_func=lambda x: x,
1057
variant_level=1):
1058
""" Modify a variable so that it's a property which announces
1059
its changes to DBus.
1060
1061
transform_fun: Function that takes a value and a variant_level
1062
and transforms it to a D-Bus type.
1063
dbus_name: D-Bus name of the variable
1064
type_func: Function that transform the value before sending it
1065
to the D-Bus. Default: no transform
1066
variant_level: D-Bus variant level. Default: 1
1067
"""
1068
attrname = "_{0}".format(dbus_name)
1069
def setter(self, value):
1070
if hasattr(self, "dbus_object_path"):
1071
if (not hasattr(self, attrname) or
1072
type_func(getattr(self, attrname, None))
1073
!= type_func(value)):
1074
dbus_value = transform_func(type_func(value),
1075
variant_level
1076
=variant_level)
1077
self.PropertyChanged(dbus.String(dbus_name),
1078
dbus_value)
1079
setattr(self, attrname, value)
1080
1081
return property(lambda self: getattr(self, attrname), setter)
1082
1083
1084
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1085
approvals_pending = notifychangeproperty(dbus.Boolean,
1086
"ApprovalPending",
1087
type_func = bool)
1088
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1089
last_enabled = notifychangeproperty(datetime_to_dbus,
1090
"LastEnabled")
1091
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1092
type_func = lambda checker:
1093
checker is not None)
1094
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1095
"LastCheckedOK")
1096
last_approval_request = notifychangeproperty(
1097
datetime_to_dbus, "LastApprovalRequest")
1098
approved_by_default = notifychangeproperty(dbus.Boolean,
1099
"ApprovedByDefault")
1100
approval_delay = notifychangeproperty(dbus.UInt64,
1101
"ApprovalDelay",
1102
type_func =
1103
timedelta_to_milliseconds)
1104
approval_duration = notifychangeproperty(
1105
dbus.UInt64, "ApprovalDuration",
1106
type_func = timedelta_to_milliseconds)
1107
host = notifychangeproperty(dbus.String, "Host")
1108
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1109
type_func =
1110
timedelta_to_milliseconds)
1111
extended_timeout = notifychangeproperty(
1112
dbus.UInt64, "ExtendedTimeout",
1113
type_func = timedelta_to_milliseconds)
1114
interval = notifychangeproperty(dbus.UInt64,
1115
"Interval",
1116
type_func =
1117
timedelta_to_milliseconds)
1118
checker_command = notifychangeproperty(dbus.String, "Checker")
1119
1120
del notifychangeproperty
688
689
@staticmethod
690
def _datetime_to_dbus(dt, variant_level=0):
691
"""Convert a UTC datetime.datetime() to a D-Bus type."""
692
return dbus.String(dt.isoformat(),
693
variant_level=variant_level)
694
695
def enable(self):
696
oldstate = getattr(self, u"enabled", False)
697
r = Client.enable(self)
698
if oldstate != self.enabled:
699
# Emit D-Bus signals
700
self.PropertyChanged(dbus.String(u"enabled"),
701
dbus.Boolean(True, variant_level=1))
702
self.PropertyChanged(
703
dbus.String(u"last_enabled"),
704
self._datetime_to_dbus(self.last_enabled,
705
variant_level=1))
706
return r
707
708
def disable(self, quiet = False):
709
oldstate = getattr(self, u"enabled", False)
710
r = Client.disable(self, quiet=quiet)
711
if not quiet and oldstate != self.enabled:
712
# Emit D-Bus signal
713
self.PropertyChanged(dbus.String(u"enabled"),
714
dbus.Boolean(False, variant_level=1))
715
return r
1121
716
1122
717
def __del__(self, *args, **kwargs):
1123
718
try:
1124
719
self.remove_from_connection()
1125
720
except LookupError:
1126
721
pass
1127
if hasattr(DBusObjectWithProperties, "__del__"):
722
if hasattr(DBusObjectWithProperties, u"__del__"):
1128
723
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1129
724
Client.__del__(self, *args, **kwargs)
1130
725
1132
727
*args, **kwargs):
1133
728
self.checker_callback_tag = None
1134
729
self.checker = None
730
# Emit D-Bus signal
731
self.PropertyChanged(dbus.String(u"checker_running"),
732
dbus.Boolean(False, variant_level=1))
1135
733
if os.WIFEXITED(condition):
1136
734
exitstatus = os.WEXITSTATUS(condition)
1137
735
# Emit D-Bus signal
1147
745
return Client.checker_callback(self, pid, condition, command,
1148
746
*args, **kwargs)
1149
747
748
def checked_ok(self, *args, **kwargs):
749
r = Client.checked_ok(self, *args, **kwargs)
750
# Emit D-Bus signal
751
self.PropertyChanged(
752
dbus.String(u"last_checked_ok"),
753
(self._datetime_to_dbus(self.last_checked_ok,
754
variant_level=1)))
755
return r
756
1150
757
def start_checker(self, *args, **kwargs):
1151
758
old_checker = self.checker
1152
759
if self.checker is not None:
1159
766
and old_checker_pid != self.checker.pid):
1160
767
# Emit D-Bus signal
1161
768
self.CheckerStarted(self.current_checker_command)
1162
return r
1163
1164
def _reset_approved(self):
1165
self.approved = None
1166
return False
1167
1168
def approve(self, value=True):
1169
self.send_changedstate()
1170
self.approved = value
1171
gobject.timeout_add(timedelta_to_milliseconds
1172
(self.approval_duration),
1173
self._reset_approved)
1174
1175
1176
## D-Bus methods, signals & properties
1177
_interface = "se.recompile.Mandos.Client"
1178
1179
## Signals
769
self.PropertyChanged(
770
dbus.String(u"checker_running"),
771
dbus.Boolean(True, variant_level=1))
772
return r
773
774
def stop_checker(self, *args, **kwargs):
775
old_checker = getattr(self, u"checker", None)
776
r = Client.stop_checker(self, *args, **kwargs)
777
if (old_checker is not None
778
and getattr(self, u"checker", None) is None):
779
self.PropertyChanged(dbus.String(u"checker_running"),
780
dbus.Boolean(False, variant_level=1))
781
return r
782
783
## D-Bus methods & signals
784
_interface = u"se.bsnet.fukt.Mandos.Client"
785
786
# CheckedOK - method
787
@dbus.service.method(_interface)
788
def CheckedOK(self):
789
return self.checked_ok()
1180
790
1181
791
# CheckerCompleted - signal
1182
@dbus.service.signal(_interface, signature="nxs")
792
@dbus.service.signal(_interface, signature=u"nxs")
1183
793
def CheckerCompleted(self, exitcode, waitstatus, command):
1184
794
"D-Bus signal"
1185
795
pass
1186
796
1187
797
# CheckerStarted - signal
1188
@dbus.service.signal(_interface, signature="s")
798
@dbus.service.signal(_interface, signature=u"s")
1189
799
def CheckerStarted(self, command):
1190
800
"D-Bus signal"
1191
801
pass
1192
802
1193
803
# PropertyChanged - signal
1194
@dbus.service.signal(_interface, signature="sv")
804
@dbus.service.signal(_interface, signature=u"sv")
1195
805
def PropertyChanged(self, property, value):
1196
806
"D-Bus signal"
1197
807
pass
1199
809
# GotSecret - signal
1200
810
@dbus.service.signal(_interface)
1201
811
def GotSecret(self):
1202
"""D-Bus signal
1203
Is sent after a successful transfer of secret from the Mandos
1204
server to mandos-client
1205
"""
812
"D-Bus signal"
1206
813
pass
1207
814
1208
815
# Rejected - signal
1209
@dbus.service.signal(_interface, signature="s")
1210
def Rejected(self, reason):
1211
"D-Bus signal"
1212
pass
1213
1214
# NeedApproval - signal
1215
@dbus.service.signal(_interface, signature="tb")
1216
def NeedApproval(self, timeout, default):
1217
"D-Bus signal"
1218
return self.need_approval()
1219
1220
# NeRwequest - signal
1221
@dbus.service.signal(_interface, signature="s")
1222
def NewRequest(self, ip):
1223
"""D-Bus signal
1224
Is sent after a client request a password.
1225
"""
1226
pass
1227
1228
## Methods
1229
1230
# Approve - method
1231
@dbus.service.method(_interface, in_signature="b")
1232
def Approve(self, value):
1233
self.approve(value)
1234
1235
# CheckedOK - method
1236
@dbus.service.method(_interface)
1237
def CheckedOK(self):
1238
self.checked_ok()
816
@dbus.service.signal(_interface)
817
def Rejected(self):
818
"D-Bus signal"
819
pass
1239
820
1240
821
# Enable - method
1241
822
@dbus.service.method(_interface)
1260
841
def StopChecker(self):
1261
842
self.stop_checker()
1262
843
1263
## Properties
1264
1265
# ApprovalPending - property
1266
@dbus_service_property(_interface, signature="b", access="read")
1267
def ApprovalPending_dbus_property(self):
1268
return dbus.Boolean(bool(self.approvals_pending))
1269
1270
# ApprovedByDefault - property
1271
@dbus_service_property(_interface, signature="b",
1272
access="readwrite")
1273
def ApprovedByDefault_dbus_property(self, value=None):
1274
if value is None: # get
1275
return dbus.Boolean(self.approved_by_default)
1276
self.approved_by_default = bool(value)
1277
1278
# ApprovalDelay - property
1279
@dbus_service_property(_interface, signature="t",
1280
access="readwrite")
1281
def ApprovalDelay_dbus_property(self, value=None):
1282
if value is None: # get
1283
return dbus.UInt64(self.approval_delay_milliseconds())
1284
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1285
1286
# ApprovalDuration - property
1287
@dbus_service_property(_interface, signature="t",
1288
access="readwrite")
1289
def ApprovalDuration_dbus_property(self, value=None):
1290
if value is None: # get
1291
return dbus.UInt64(timedelta_to_milliseconds(
1292
self.approval_duration))
1293
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1294
1295
# Name - property
1296
@dbus_service_property(_interface, signature="s", access="read")
1297
def Name_dbus_property(self):
844
# name - property
845
@dbus_service_property(_interface, signature=u"s", access=u"read")
846
def name_dbus_property(self):
1298
847
return dbus.String(self.name)
1299
848
1300
# Fingerprint - property
1301
@dbus_service_property(_interface, signature="s", access="read")
1302
def Fingerprint_dbus_property(self):
849
# fingerprint - property
850
@dbus_service_property(_interface, signature=u"s", access=u"read")
851
def fingerprint_dbus_property(self):
1303
852
return dbus.String(self.fingerprint)
1304
853
1305
# Host - property
1306
@dbus_service_property(_interface, signature="s",
1307
access="readwrite")
1308
def Host_dbus_property(self, value=None):
854
# host - property
855
@dbus_service_property(_interface, signature=u"s",
856
access=u"readwrite")
857
def host_dbus_property(self, value=None):
1309
858
if value is None: # get
1310
859
return dbus.String(self.host)
1311
self.host = unicode(value)
1312
1313
# Created - property
1314
@dbus_service_property(_interface, signature="s", access="read")
1315
def Created_dbus_property(self):
1316
return datetime_to_dbus(self.created)
1317
1318
# LastEnabled - property
1319
@dbus_service_property(_interface, signature="s", access="read")
1320
def LastEnabled_dbus_property(self):
1321
return datetime_to_dbus(self.last_enabled)
1322
1323
# Enabled - property
1324
@dbus_service_property(_interface, signature="b",
1325
access="readwrite")
1326
def Enabled_dbus_property(self, value=None):
860
self.host = value
861
# Emit D-Bus signal
862
self.PropertyChanged(dbus.String(u"host"),
863
dbus.String(value, variant_level=1))
864
865
# created - property
866
@dbus_service_property(_interface, signature=u"s", access=u"read")
867
def created_dbus_property(self):
868
return dbus.String(self._datetime_to_dbus(self.created))
869
870
# last_enabled - property
871
@dbus_service_property(_interface, signature=u"s", access=u"read")
872
def last_enabled_dbus_property(self):
873
if self.last_enabled is None:
874
return dbus.String(u"")
875
return dbus.String(self._datetime_to_dbus(self.last_enabled))
876
877
# enabled - property
878
@dbus_service_property(_interface, signature=u"b",
879
access=u"readwrite")
880
def enabled_dbus_property(self, value=None):
1327
881
if value is None: # get
1328
882
return dbus.Boolean(self.enabled)
1329
883
if value:
1331
885
else:
1332
886
self.disable()
1333
887
1334
# LastCheckedOK - property
1335
@dbus_service_property(_interface, signature="s",
1336
access="readwrite")
1337
def LastCheckedOK_dbus_property(self, value=None):
888
# last_checked_ok - property
889
@dbus_service_property(_interface, signature=u"s",
890
access=u"readwrite")
891
def last_checked_ok_dbus_property(self, value=None):
1338
892
if value is not None:
1339
893
self.checked_ok()
1340
894
return
1341
return datetime_to_dbus(self.last_checked_ok)
1342
1343
# Expires - property
1344
@dbus_service_property(_interface, signature="s", access="read")
1345
def Expires_dbus_property(self):
1346
return datetime_to_dbus(self.expires)
1347
1348
# LastApprovalRequest - property
1349
@dbus_service_property(_interface, signature="s", access="read")
1350
def LastApprovalRequest_dbus_property(self):
1351
return datetime_to_dbus(self.last_approval_request)
1352
1353
# Timeout - property
1354
@dbus_service_property(_interface, signature="t",
1355
access="readwrite")
1356
def Timeout_dbus_property(self, value=None):
895
if self.last_checked_ok is None:
896
return dbus.String(u"")
897
return dbus.String(self._datetime_to_dbus(self
898
.last_checked_ok))
899
900
# timeout - property
901
@dbus_service_property(_interface, signature=u"t",
902
access=u"readwrite")
903
def timeout_dbus_property(self, value=None):
1357
904
if value is None: # get
1358
905
return dbus.UInt64(self.timeout_milliseconds())
1359
906
self.timeout = datetime.timedelta(0, 0, 0, value)
1360
if getattr(self, "disable_initiator_tag", None) is None:
907
# Emit D-Bus signal
908
self.PropertyChanged(dbus.String(u"timeout"),
909
dbus.UInt64(value, variant_level=1))
910
if getattr(self, u"disable_initiator_tag", None) is None:
1361
911
return
1362
912
# Reschedule timeout
1363
913
gobject.source_remove(self.disable_initiator_tag)
1364
914
self.disable_initiator_tag = None
1365
self.expires = None
1366
time_to_die = timedelta_to_milliseconds((self
1367
.last_checked_ok
1368
+ self.timeout)
1369
- datetime.datetime
1370
.utcnow())
915
time_to_die = (self.
916
_timedelta_to_milliseconds((self
917
.last_checked_ok
918
+ self.timeout)
919
- datetime.datetime
920
.utcnow()))
1371
921
if time_to_die <= 0:
1372
922
# The timeout has passed
1373
923
self.disable()
1374
924
else:
1375
self.expires = (datetime.datetime.utcnow()
1376
+ datetime.timedelta(milliseconds =
1377
time_to_die))
1378
925
self.disable_initiator_tag = (gobject.timeout_add
1379
926
(time_to_die, self.disable))
1380
927
1381
# ExtendedTimeout - property
1382
@dbus_service_property(_interface, signature="t",
1383
access="readwrite")
1384
def ExtendedTimeout_dbus_property(self, value=None):
1385
if value is None: # get
1386
return dbus.UInt64(self.extended_timeout_milliseconds())
1387
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1388
1389
# Interval - property
1390
@dbus_service_property(_interface, signature="t",
1391
access="readwrite")
1392
def Interval_dbus_property(self, value=None):
928
# interval - property
929
@dbus_service_property(_interface, signature=u"t",
930
access=u"readwrite")
931
def interval_dbus_property(self, value=None):
1393
932
if value is None: # get
1394
933
return dbus.UInt64(self.interval_milliseconds())
1395
934
self.interval = datetime.timedelta(0, 0, 0, value)
1396
if getattr(self, "checker_initiator_tag", None) is None:
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"interval"),
937
dbus.UInt64(value, variant_level=1))
938
if getattr(self, u"checker_initiator_tag", None) is None:
1397
939
return
1398
if self.enabled:
1399
# Reschedule checker run
1400
gobject.source_remove(self.checker_initiator_tag)
1401
self.checker_initiator_tag = (gobject.timeout_add
1402
(value, self.start_checker))
1403
self.start_checker() # Start one now, too
1404
1405
# Checker - property
1406
@dbus_service_property(_interface, signature="s",
1407
access="readwrite")
1408
def Checker_dbus_property(self, value=None):
940
# Reschedule checker run
941
gobject.source_remove(self.checker_initiator_tag)
942
self.checker_initiator_tag = (gobject.timeout_add
943
(value, self.start_checker))
944
self.start_checker() # Start one now, too
945
946
# checker - property
947
@dbus_service_property(_interface, signature=u"s",
948
access=u"readwrite")
949
def checker_dbus_property(self, value=None):
1409
950
if value is None: # get
1410
951
return dbus.String(self.checker_command)
1411
self.checker_command = unicode(value)
952
self.checker_command = value
953
# Emit D-Bus signal
954
self.PropertyChanged(dbus.String(u"checker"),
955
dbus.String(self.checker_command,
956
variant_level=1))
1412
957
1413
# CheckerRunning - property
1414
@dbus_service_property(_interface, signature="b",
1415
access="readwrite")
1416
def CheckerRunning_dbus_property(self, value=None):
958
# checker_running - property
959
@dbus_service_property(_interface, signature=u"b",
960
access=u"readwrite")
961
def checker_running_dbus_property(self, value=None):
1417
962
if value is None: # get
1418
963
return dbus.Boolean(self.checker is not None)
1419
964
if value:
1421
966
else:
1422
967
self.stop_checker()
1423
968
1424
# ObjectPath - property
1425
@dbus_service_property(_interface, signature="o", access="read")
1426
def ObjectPath_dbus_property(self):
969
# object_path - property
970
@dbus_service_property(_interface, signature=u"o", access=u"read")
971
def object_path_dbus_property(self):
1427
972
return self.dbus_object_path # is already a dbus.ObjectPath
1428
973
1429
# Secret = property
1430
@dbus_service_property(_interface, signature="ay",
1431
access="write", byte_arrays=True)
1432
def Secret_dbus_property(self, value):
974
# secret = property
975
@dbus_service_property(_interface, signature=u"ay",
976
access=u"write", byte_arrays=True)
977
def secret_dbus_property(self, value):
1433
978
self.secret = str(value)
1434
979
1435
980
del _interface
1436
981
1437
982
1438
class ProxyClient(object):
1439
def __init__(self, child_pipe, fpr, address):
1440
self._pipe = child_pipe
1441
self._pipe.send(('init', fpr, address))
1442
if not self._pipe.recv():
1443
raise KeyError()
1444
1445
def __getattribute__(self, name):
1446
if name == '_pipe':
1447
return super(ProxyClient, self).__getattribute__(name)
1448
self._pipe.send(('getattr', name))
1449
data = self._pipe.recv()
1450
if data[0] == 'data':
1451
return data[1]
1452
if data[0] == 'function':
1453
def func(*args, **kwargs):
1454
self._pipe.send(('funcall', name, args, kwargs))
1455
return self._pipe.recv()[1]
1456
return func
1457
1458
def __setattr__(self, name, value):
1459
if name == '_pipe':
1460
return super(ProxyClient, self).__setattr__(name, value)
1461
self._pipe.send(('setattr', name, value))
1462
1463
1464
class ClientDBusTransitional(ClientDBus):
1465
__metaclass__ = AlternateDBusNamesMetaclass
1466
1467
1468
983
class ClientHandler(socketserver.BaseRequestHandler, object):
1469
984
"""A class to handle client connections.
1470
985
1472
987
Note: This will run in its own forked process."""
1473
988
1474
989
def handle(self):
1475
with contextlib.closing(self.server.child_pipe) as child_pipe:
1476
logger.info("TCP connection from: %s",
1477
unicode(self.client_address))
1478
logger.debug("Pipe FD: %d",
1479
self.server.child_pipe.fileno())
1480
990
logger.info(u"TCP connection from: %s",
991
unicode(self.client_address))
992
logger.debug(u"IPC Pipe FD: %d", self.server.child_pipe[1])
993
# Open IPC pipe to parent process
994
with contextlib.nested(os.fdopen(self.server.child_pipe[1],
995
u"w", 1),
996
os.fdopen(self.server.parent_pipe[0],
997
u"r", 0)) as (ipc,
998
ipc_return):
1481
999
session = (gnutls.connection
1482
1000
.ClientSession(self.request,
1483
1001
gnutls.connection
1484
1002
.X509Credentials()))
1485
1003
1004
line = self.request.makefile().readline()
1005
logger.debug(u"Protocol version: %r", line)
1006
try:
1007
if int(line.strip().split()[0]) > 1:
1008
raise RuntimeError
1009
except (ValueError, IndexError, RuntimeError), error:
1010
logger.error(u"Unknown protocol version: %s", error)
1011
return
1012
1486
1013
# Note: gnutls.connection.X509Credentials is really a
1487
1014
# generic GnuTLS certificate credentials object so long as
1488
1015
# no X.509 keys are added to it. Therefore, we can use it
1489
1016
# here despite using OpenPGP certificates.
1490
1017
1491
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1492
# "+AES-256-CBC", "+SHA1",
1493
# "+COMP-NULL", "+CTYPE-OPENPGP",
1494
# "+DHE-DSS"))
1018
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1019
# u"+AES-256-CBC", u"+SHA1",
1020
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1021
# u"+DHE-DSS"))
1495
1022
# Use a fallback default, since this MUST be set.
1496
1023
priority = self.server.gnutls_priority
1497
1024
if priority is None:
1498
priority = "NORMAL"
1025
priority = u"NORMAL"
1499
1026
(gnutls.library.functions
1500
1027
.gnutls_priority_set_direct(session._c_object,
1501
1028
priority, None))
1502
1029
1503
# Start communication using the Mandos protocol
1504
# Get protocol number
1505
line = self.request.makefile().readline()
1506
logger.debug("Protocol version: %r", line)
1507
try:
1508
if int(line.strip().split()[0]) > 1:
1509
raise RuntimeError
1510
except (ValueError, IndexError, RuntimeError) as error:
1511
logger.error("Unknown protocol version: %s", error)
1512
return
1513
1514
# Start GnuTLS connection
1515
1030
try:
1516
1031
session.handshake()
1517
except gnutls.errors.GNUTLSError as error:
1518
logger.warning("Handshake failed: %s", error)
1032
except gnutls.errors.GNUTLSError, error:
1033
logger.warning(u"Handshake failed: %s", error)
1519
1034
# Do not run session.bye() here: the session is not
1520
1035
# established. Just abandon the request.
1521
1036
return
1522
logger.debug("Handshake succeeded")
1523
1524
approval_required = False
1037
logger.debug(u"Handshake succeeded")
1525
1038
try:
1526
1039
try:
1527
1040
fpr = self.fingerprint(self.peer_certificate
1528
1041
(session))
1529
except (TypeError,
1530
gnutls.errors.GNUTLSError) as error:
1531
logger.warning("Bad certificate: %s", error)
1532
return
1533
logger.debug("Fingerprint: %s", fpr)
1534
1535
try:
1536
client = ProxyClient(child_pipe, fpr,
1537
self.client_address)
1538
except KeyError:
1539
return
1540
1541
if self.server.use_dbus:
1542
# Emit D-Bus signal
1543
client.NewRequest(str(self.client_address))
1544
1545
if client.approval_delay:
1546
delay = client.approval_delay
1547
client.approvals_pending += 1
1548
approval_required = True
1549
1550
while True:
1551
if not client.enabled:
1552
logger.info("Client %s is disabled",
1553
client.name)
1554
if self.server.use_dbus:
1555
# Emit D-Bus signal
1556
client.Rejected("Disabled")
1557
return
1558
1559
if client.approved or not client.approval_delay:
1560
#We are approved or approval is disabled
1042
except (TypeError, gnutls.errors.GNUTLSError), error:
1043
logger.warning(u"Bad certificate: %s", error)
1044
return
1045
logger.debug(u"Fingerprint: %s", fpr)
1046
1047
for c in self.server.clients:
1048
if c.fingerprint == fpr:
1049
client = c
1561
1050
break
1562
elif client.approved is None:
1563
logger.info("Client %s needs approval",
1564
client.name)
1565
if self.server.use_dbus:
1566
# Emit D-Bus signal
1567
client.NeedApproval(
1568
client.approval_delay_milliseconds(),
1569
client.approved_by_default)
1570
else:
1571
logger.warning("Client %s was not approved",
1572
client.name)
1573
if self.server.use_dbus:
1574
# Emit D-Bus signal
1575
client.Rejected("Denied")
1576
return
1577
1578
#wait until timeout or approved
1579
time = datetime.datetime.now()
1580
client.changedstate.acquire()
1581
(client.changedstate.wait
1582
(float(client.timedelta_to_milliseconds(delay)
1583
/ 1000)))
1584
client.changedstate.release()
1585
time2 = datetime.datetime.now()
1586
if (time2 - time) >= delay:
1587
if not client.approved_by_default:
1588
logger.warning("Client %s timed out while"
1589
" waiting for approval",
1590
client.name)
1591
if self.server.use_dbus:
1592
# Emit D-Bus signal
1593
client.Rejected("Approval timed out")
1594
return
1595
else:
1596
break
1597
else:
1598
delay -= time2 - time
1599
1051
else:
1052
ipc.write(u"NOTFOUND %s %s\n"
1053
% (fpr, unicode(self.client_address)))
1054
return
1055
# Have to check if client.enabled, since it is
1056
# possible that the client was disabled since the
1057
# GnuTLS session was established.
1058
ipc.write(u"GETATTR enabled %s\n" % fpr)
1059
enabled = pickle.load(ipc_return)
1060
if not enabled:
1061
ipc.write(u"DISABLED %s\n" % client.name)
1062
return
1063
ipc.write(u"SENDING %s\n" % client.name)
1600
1064
sent_size = 0
1601
1065
while sent_size < len(client.secret):
1602
try:
1603
sent = session.send(client.secret[sent_size:])
1604
except gnutls.errors.GNUTLSError as error:
1605
logger.warning("gnutls send failed")
1606
return
1607
logger.debug("Sent: %d, remaining: %d",
1066
sent = session.send(client.secret[sent_size:])
1067
logger.debug(u"Sent: %d, remaining: %d",
1608
1068
sent, len(client.secret)
1609
1069
- (sent_size + sent))
1610
1070
sent_size += sent
1611
1612
logger.info("Sending secret to %s", client.name)
1613
# bump the timeout using extended_timeout
1614
client.checked_ok(client.extended_timeout)
1615
if self.server.use_dbus:
1616
# Emit D-Bus signal
1617
client.GotSecret()
1618
1619
1071
finally:
1620
if approval_required:
1621
client.approvals_pending -= 1
1622
try:
1623
session.bye()
1624
except gnutls.errors.GNUTLSError as error:
1625
logger.warning("GnuTLS bye failed")
1072
session.bye()
1626
1073
1627
1074
@staticmethod
1628
1075
def peer_certificate(session):
1638
1085
.gnutls_certificate_get_peers
1639
1086
(session._c_object, ctypes.byref(list_size)))
1640
1087
if not bool(cert_list) and list_size.value != 0:
1641
raise gnutls.errors.GNUTLSError("error getting peer"
1642
" certificate")
1088
raise gnutls.errors.GNUTLSError(u"error getting peer"
1089
u" certificate")
1643
1090
if list_size.value == 0:
1644
1091
return None
1645
1092
cert = cert_list[0]
1671
1118
if crtverify.value != 0:
1672
1119
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1673
1120
raise (gnutls.errors.CertificateSecurityError
1674
("Verify failed"))
1121
(u"Verify failed"))
1675
1122
# New buffer for the fingerprint
1676
1123
buf = ctypes.create_string_buffer(20)
1677
1124
buf_len = ctypes.c_size_t()
1684
1131
# Convert the buffer to a Python bytestring
1685
1132
fpr = ctypes.string_at(buf, buf_len.value)
1686
1133
# Convert the bytestring to hexadecimal notation
1687
hex_fpr = binascii.hexlify(fpr).upper()
1134
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1688
1135
return hex_fpr
1689
1136
1690
1137
1691
class MultiprocessingMixIn(object):
1692
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1693
def sub_process_main(self, request, address):
1694
try:
1695
self.finish_request(request, address)
1696
except Exception:
1697
self.handle_error(request, address)
1698
self.close_request(request)
1699
1700
def process_request(self, request, address):
1701
"""Start a new process to process the request."""
1702
proc = multiprocessing.Process(target = self.sub_process_main,
1703
args = (request,
1704
address))
1705
proc.start()
1706
return proc
1707
1708
1709
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1710
""" adds a pipe to the MixIn """
1138
class ForkingMixInWithPipes(socketserver.ForkingMixIn, object):
1139
"""Like socketserver.ForkingMixIn, but also pass a pipe pair."""
1711
1140
def process_request(self, request, client_address):
1712
1141
"""Overrides and wraps the original process_request().
1713
1142
1714
1143
This function creates a new pipe in self.pipe
1715
1144
"""
1716
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1717
1718
proc = MultiprocessingMixIn.process_request(self, request,
1719
client_address)
1720
self.child_pipe.close()
1721
self.add_pipe(parent_pipe, proc)
1722
1723
def add_pipe(self, parent_pipe, proc):
1145
self.child_pipe = os.pipe() # Child writes here
1146
self.parent_pipe = os.pipe() # Parent writes here
1147
super(ForkingMixInWithPipes,
1148
self).process_request(request, client_address)
1149
# Close unused ends for parent
1150
os.close(self.parent_pipe[0]) # close read end
1151
os.close(self.child_pipe[1]) # close write end
1152
self.add_pipe_fds(self.child_pipe[0], self.parent_pipe[1])
1153
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
1724
1154
"""Dummy function; override as necessary"""
1725
raise NotImplementedError
1726
1727
1728
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1155
os.close(child_pipe_fd)
1156
os.close(parent_pipe_fd)
1157
1158
1159
class IPv6_TCPServer(ForkingMixInWithPipes,
1729
1160
socketserver.TCPServer, object):
1730
1161
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1731
1162
1747
1178
bind to an address or port if they were not specified."""
1748
1179
if self.interface is not None:
1749
1180
if SO_BINDTODEVICE is None:
1750
logger.error("SO_BINDTODEVICE does not exist;"
1751
" cannot bind to interface %s",
1181
logger.error(u"SO_BINDTODEVICE does not exist;"
1182
u" cannot bind to interface %s",
1752
1183
self.interface)
1753
1184
else:
1754
1185
try:
1755
1186
self.socket.setsockopt(socket.SOL_SOCKET,
1756
1187
SO_BINDTODEVICE,
1757
1188
str(self.interface
1758
+ '\0'))
1759
except socket.error as error:
1189
+ u'\0'))
1190
except socket.error, error:
1760
1191
if error[0] == errno.EPERM:
1761
logger.error("No permission to"
1762
" bind to interface %s",
1192
logger.error(u"No permission to"
1193
u" bind to interface %s",
1763
1194
self.interface)
1764
1195
elif error[0] == errno.ENOPROTOOPT:
1765
logger.error("SO_BINDTODEVICE not available;"
1766
" cannot bind to interface %s",
1196
logger.error(u"SO_BINDTODEVICE not available;"
1197
u" cannot bind to interface %s",
1767
1198
self.interface)
1768
1199
else:
1769
1200
raise
1771
1202
if self.server_address[0] or self.server_address[1]:
1772
1203
if not self.server_address[0]:
1773
1204
if self.address_family == socket.AF_INET6:
1774
any_address = "::" # in6addr_any
1205
any_address = u"::" # in6addr_any
1775
1206
else:
1776
1207
any_address = socket.INADDR_ANY
1777
1208
self.server_address = (any_address,
1804
1235
self.enabled = False
1805
1236
self.clients = clients
1806
1237
if self.clients is None:
1807
self.clients = {}
1238
self.clients = set()
1808
1239
self.use_dbus = use_dbus
1809
1240
self.gnutls_priority = gnutls_priority
1810
1241
IPv6_TCPServer.__init__(self, server_address,
1814
1245
def server_activate(self):
1815
1246
if self.enabled:
1816
1247
return socketserver.TCPServer.server_activate(self)
1817
1818
1248
def enable(self):
1819
1249
self.enabled = True
1820
1821
def add_pipe(self, parent_pipe, proc):
1250
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
1822
1251
# Call "handle_ipc" for both data and EOF events
1823
gobject.io_add_watch(parent_pipe.fileno(),
1252
gobject.io_add_watch(child_pipe_fd,
1824
1253
gobject.IO_IN | gobject.IO_HUP,
1825
1254
functools.partial(self.handle_ipc,
1826
parent_pipe =
1827
parent_pipe,
1828
proc = proc))
1829
1830
def handle_ipc(self, source, condition, parent_pipe=None,
1831
proc = None, client_object=None):
1255
reply_fd
1256
=parent_pipe_fd))
1257
def handle_ipc(self, source, condition, reply_fd=None,
1258
file_objects={}):
1832
1259
condition_names = {
1833
gobject.IO_IN: "IN", # There is data to read.
1834
gobject.IO_OUT: "OUT", # Data can be written (without
1260
gobject.IO_IN: u"IN", # There is data to read.
1261
gobject.IO_OUT: u"OUT", # Data can be written (without
1835
1262
# blocking).
1836
gobject.IO_PRI: "PRI", # There is urgent data to read.
1837
gobject.IO_ERR: "ERR", # Error condition.
1838
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1263
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1264
gobject.IO_ERR: u"ERR", # Error condition.
1265
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1839
1266
# broken, usually for pipes and
1840
1267
# sockets).
1841
1268
}
1843
1270
for cond, name in
1844
1271
condition_names.iteritems()
1845
1272
if cond & condition)
1846
# error, or the other end of multiprocessing.Pipe has closed
1847
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1848
# Wait for other process to exit
1849
proc.join()
1850
return False
1851
1852
# Read a request from the child
1853
request = parent_pipe.recv()
1854
command = request[0]
1855
1856
if command == 'init':
1857
fpr = request[1]
1858
address = request[2]
1859
1860
for c in self.clients.itervalues():
1861
if c.fingerprint == fpr:
1862
client = c
1863
break
1864
else:
1865
logger.info("Client not found for fingerprint: %s, ad"
1866
"dress: %s", fpr, address)
1867
if self.use_dbus:
1868
# Emit D-Bus signal
1869
mandos_dbus_service.ClientNotFound(fpr,
1870
address[0])
1871
parent_pipe.send(False)
1872
return False
1873
1874
gobject.io_add_watch(parent_pipe.fileno(),
1875
gobject.IO_IN | gobject.IO_HUP,
1876
functools.partial(self.handle_ipc,
1877
parent_pipe =
1878
parent_pipe,
1879
proc = proc,
1880
client_object =
1881
client))
1882
parent_pipe.send(True)
1883
# remove the old hook in favor of the new above hook on
1884
# same fileno
1885
return False
1886
if command == 'funcall':
1887
funcname = request[1]
1888
args = request[2]
1889
kwargs = request[3]
1890
1891
parent_pipe.send(('data', getattr(client_object,
1892
funcname)(*args,
1893
**kwargs)))
1894
1895
if command == 'getattr':
1896
attrname = request[1]
1897
if callable(client_object.__getattribute__(attrname)):
1898
parent_pipe.send(('function',))
1899
else:
1900
parent_pipe.send(('data', client_object
1901
.__getattribute__(attrname)))
1902
1903
if command == 'setattr':
1904
attrname = request[1]
1905
value = request[2]
1906
setattr(client_object, attrname, value)
1907
1273
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1274
conditions_string)
1275
1276
# Turn the pipe file descriptors into Python file objects
1277
if source not in file_objects:
1278
file_objects[source] = os.fdopen(source, u"r", 1)
1279
if reply_fd not in file_objects:
1280
file_objects[reply_fd] = os.fdopen(reply_fd, u"w", 0)
1281
1282
# Read a line from the file object
1283
cmdline = file_objects[source].readline()
1284
if not cmdline: # Empty line means end of file
1285
# close the IPC pipes
1286
file_objects[source].close()
1287
del file_objects[source]
1288
file_objects[reply_fd].close()
1289
del file_objects[reply_fd]
1290
1291
# Stop calling this function
1292
return False
1293
1294
logger.debug(u"IPC command: %r", cmdline)
1295
1296
# Parse and act on command
1297
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1298
1299
if cmd == u"NOTFOUND":
1300
fpr, address = args.split(None, 1)
1301
logger.warning(u"Client not found for fingerprint: %s, ad"
1302
u"dress: %s", fpr, address)
1303
if self.use_dbus:
1304
# Emit D-Bus signal
1305
mandos_dbus_service.ClientNotFound(fpr, address)
1306
elif cmd == u"DISABLED":
1307
for client in self.clients:
1308
if client.name == args:
1309
logger.warning(u"Client %s is disabled", args)
1310
if self.use_dbus:
1311
# Emit D-Bus signal
1312
client.Rejected()
1313
break
1314
else:
1315
logger.error(u"Unknown client %s is disabled", args)
1316
elif cmd == u"SENDING":
1317
for client in self.clients:
1318
if client.name == args:
1319
logger.info(u"Sending secret to %s", client.name)
1320
client.checked_ok()
1321
if self.use_dbus:
1322
# Emit D-Bus signal
1323
client.GotSecret()
1324
break
1325
else:
1326
logger.error(u"Sending secret to unknown client %s",
1327
args)
1328
elif cmd == u"GETATTR":
1329
attr_name, fpr = args.split(None, 1)
1330
for client in self.clients:
1331
if client.fingerprint == fpr:
1332
attr_value = getattr(client, attr_name, None)
1333
logger.debug("IPC reply: %r", attr_value)
1334
pickle.dump(attr_value, file_objects[reply_fd])
1335
break
1336
else:
1337
logger.error(u"Client %s on address %s requesting "
1338
u"attribute %s not found", fpr, address,
1339
attr_name)
1340
pickle.dump(None, file_objects[reply_fd])
1341
else:
1342
logger.error(u"Unknown IPC command: %r", cmdline)
1343
1344
# Keep calling this function
1908
1345
return True
1909
1346
1910
1347
1911
1348
def string_to_delta(interval):
1912
1349
"""Parse a string and return a datetime.timedelta
1913
1350
1914
>>> string_to_delta('7d')
1351
>>> string_to_delta(u'7d')
1915
1352
datetime.timedelta(7)
1916
>>> string_to_delta('60s')
1353
>>> string_to_delta(u'60s')
1917
1354
datetime.timedelta(0, 60)
1918
>>> string_to_delta('60m')
1355
>>> string_to_delta(u'60m')
1919
1356
datetime.timedelta(0, 3600)
1920
>>> string_to_delta('24h')
1357
>>> string_to_delta(u'24h')
1921
1358
datetime.timedelta(1)
1922
>>> string_to_delta('1w')
1359
>>> string_to_delta(u'1w')
1923
1360
datetime.timedelta(7)
1924
>>> string_to_delta('5m 30s')
1361
>>> string_to_delta(u'5m 30s')
1925
1362
datetime.timedelta(0, 330)
1926
1363
"""
1927
1364
timevalue = datetime.timedelta(0)
1929
1366
try:
1930
1367
suffix = unicode(s[-1])
1931
1368
value = int(s[:-1])
1932
if suffix == "d":
1369
if suffix == u"d":
1933
1370
delta = datetime.timedelta(value)
1934
elif suffix == "s":
1371
elif suffix == u"s":
1935
1372
delta = datetime.timedelta(0, value)
1936
elif suffix == "m":
1373
elif suffix == u"m":
1937
1374
delta = datetime.timedelta(0, 0, 0, 0, value)
1938
elif suffix == "h":
1375
elif suffix == u"h":
1939
1376
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1940
elif suffix == "w":
1377
elif suffix == u"w":
1941
1378
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1942
1379
else:
1943
raise ValueError("Unknown suffix %r" % suffix)
1944
except (ValueError, IndexError) as e:
1945
raise ValueError(*(e.args))
1380
raise ValueError(u"Unknown suffix %r" % suffix)
1381
except (ValueError, IndexError), e:
1382
raise ValueError(e.message)
1946
1383
timevalue += delta
1947
1384
return timevalue
1948
1385
1949
1386
1387
def if_nametoindex(interface):
1388
"""Call the C function if_nametoindex(), or equivalent
1389
1390
Note: This function cannot accept a unicode string."""
1391
global if_nametoindex
1392
try:
1393
if_nametoindex = (ctypes.cdll.LoadLibrary
1394
(ctypes.util.find_library(u"c"))
1395
.if_nametoindex)
1396
except (OSError, AttributeError):
1397
logger.warning(u"Doing if_nametoindex the hard way")
1398
def if_nametoindex(interface):
1399
"Get an interface index the hard way, i.e. using fcntl()"
1400
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1401
with contextlib.closing(socket.socket()) as s:
1402
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1403
struct.pack(str(u"16s16x"),
1404
interface))
1405
interface_index = struct.unpack(str(u"I"),
1406
ifreq[16:20])[0]
1407
return interface_index
1408
return if_nametoindex(interface)
1409
1410
1950
1411
def daemon(nochdir = False, noclose = False):
1951
1412
"""See daemon(3). Standard BSD Unix function.
1952
1413
1955
1416
sys.exit()
1956
1417
os.setsid()
1957
1418
if not nochdir:
1958
os.chdir("/")
1419
os.chdir(u"/")
1959
1420
if os.fork():
1960
1421
sys.exit()
1961
1422
if not noclose:
1963
1424
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1964
1425
if not stat.S_ISCHR(os.fstat(null).st_mode):
1965
1426
raise OSError(errno.ENODEV,
1966
"%s not a character device"
1427
u"%s not a character device"
1967
1428
% os.path.devnull)
1968
1429
os.dup2(null, sys.stdin.fileno())
1969
1430
os.dup2(null, sys.stdout.fileno())
1977
1438
##################################################################
1978
1439
# Parsing of options, both command line and config file
1979
1440
1980
parser = argparse.ArgumentParser()
1981
parser.add_argument("-v", "--version", action="version",
1982
version = "%%(prog)s %s" % version,
1983
help="show version number and exit")
1984
parser.add_argument("-i", "--interface", metavar="IF",
1985
help="Bind to interface IF")
1986
parser.add_argument("-a", "--address",
1987
help="Address to listen for requests on")
1988
parser.add_argument("-p", "--port", type=int,
1989
help="Port number to receive requests on")
1990
parser.add_argument("--check", action="store_true",
1991
help="Run self-test")
1992
parser.add_argument("--debug", action="store_true",
1993
help="Debug mode; run in foreground and log"
1994
" to terminal")
1995
parser.add_argument("--debuglevel", metavar="LEVEL",
1996
help="Debug level for stdout output")
1997
parser.add_argument("--priority", help="GnuTLS"
1998
" priority string (see GnuTLS documentation)")
1999
parser.add_argument("--servicename",
2000
metavar="NAME", help="Zeroconf service name")
2001
parser.add_argument("--configdir",
2002
default="/etc/mandos", metavar="DIR",
2003
help="Directory to search for configuration"
2004
" files")
2005
parser.add_argument("--no-dbus", action="store_false",
2006
dest="use_dbus", help="Do not provide D-Bus"
2007
" system bus interface")
2008
parser.add_argument("--no-ipv6", action="store_false",
2009
dest="use_ipv6", help="Do not use IPv6")
2010
parser.add_argument("--no-restore", action="store_false",
2011
dest="restore", help="Do not restore stored"
2012
" state")
2013
parser.add_argument("--statedir", metavar="DIR",
2014
help="Directory to save/restore state in")
2015
2016
options = parser.parse_args()
1441
parser = optparse.OptionParser(version = "%%prog %s" % version)
1442
parser.add_option("-i", u"--interface", type=u"string",
1443
metavar="IF", help=u"Bind to interface IF")
1444
parser.add_option("-a", u"--address", type=u"string",
1445
help=u"Address to listen for requests on")
1446
parser.add_option("-p", u"--port", type=u"int",
1447
help=u"Port number to receive requests on")
1448
parser.add_option("--check", action=u"store_true",
1449
help=u"Run self-test")
1450
parser.add_option("--debug", action=u"store_true",
1451
help=u"Debug mode; run in foreground and log to"
1452
u" terminal")
1453
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1454
u" priority string (see GnuTLS documentation)")
1455
parser.add_option("--servicename", type=u"string",
1456
metavar=u"NAME", help=u"Zeroconf service name")
1457
parser.add_option("--configdir", type=u"string",
1458
default=u"/etc/mandos", metavar=u"DIR",
1459
help=u"Directory to search for configuration"
1460
u" files")
1461
parser.add_option("--no-dbus", action=u"store_false",
1462
dest=u"use_dbus", help=u"Do not provide D-Bus"
1463
u" system bus interface")
1464
parser.add_option("--no-ipv6", action=u"store_false",
1465
dest=u"use_ipv6", help=u"Do not use IPv6")
1466
options = parser.parse_args()[0]
2017
1467
2018
1468
if options.check:
2019
1469
import doctest
2021
1471
sys.exit()
2022
1472
2023
1473
# Default values for config file for server-global settings
2024
server_defaults = { "interface": "",
2025
"address": "",
2026
"port": "",
2027
"debug": "False",
2028
"priority":
2029
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2030
"servicename": "Mandos",
2031
"use_dbus": "True",
2032
"use_ipv6": "True",
2033
"debuglevel": "",
2034
"restore": "True",
2035
"statedir": "/var/lib/mandos"
1474
server_defaults = { u"interface": u"",
1475
u"address": u"",
1476
u"port": u"",
1477
u"debug": u"False",
1478
u"priority":
1479
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1480
u"servicename": u"Mandos",
1481
u"use_dbus": u"True",
1482
u"use_ipv6": u"True",
2036
1483
}
2037
1484
2038
1485
# Parse config file for server-global settings
2039
1486
server_config = configparser.SafeConfigParser(server_defaults)
2040
1487
del server_defaults
2041
1488
server_config.read(os.path.join(options.configdir,
2042
"mandos.conf"))
1489
u"mandos.conf"))
2043
1490
# Convert the SafeConfigParser object to a dict
2044
1491
server_settings = server_config.defaults()
2045
1492
# Use the appropriate methods on the non-string config options
2046
for option in ("debug", "use_dbus", "use_ipv6"):
2047
server_settings[option] = server_config.getboolean("DEFAULT",
1493
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1494
server_settings[option] = server_config.getboolean(u"DEFAULT",
2048
1495
option)
2049
1496
if server_settings["port"]:
2050
server_settings["port"] = server_config.getint("DEFAULT",
2051
"port")
1497
server_settings["port"] = server_config.getint(u"DEFAULT",
1498
u"port")
2052
1499
del server_config
2053
1500
2054
1501
# Override the settings from the config file with command line
2055
1502
# options, if set.
2056
for option in ("interface", "address", "port", "debug",
2057
"priority", "servicename", "configdir",
2058
"use_dbus", "use_ipv6", "debuglevel", "restore",
2059
"statedir"):
1503
for option in (u"interface", u"address", u"port", u"debug",
1504
u"priority", u"servicename", u"configdir",
1505
u"use_dbus", u"use_ipv6"):
2060
1506
value = getattr(options, option)
2061
1507
if value is not None:
2062
1508
server_settings[option] = value
2070
1516
##################################################################
2071
1517
2072
1518
# For convenience
2073
debug = server_settings["debug"]
2074
debuglevel = server_settings["debuglevel"]
2075
use_dbus = server_settings["use_dbus"]
2076
use_ipv6 = server_settings["use_ipv6"]
2077
stored_state_path = os.path.join(server_settings["statedir"],
2078
stored_state_file)
2079
2080
if debug:
2081
initlogger(logging.DEBUG)
2082
else:
2083
if not debuglevel:
2084
initlogger()
2085
else:
2086
level = getattr(logging, debuglevel.upper())
2087
initlogger(level)
2088
2089
if server_settings["servicename"] != "Mandos":
1519
debug = server_settings[u"debug"]
1520
use_dbus = server_settings[u"use_dbus"]
1521
use_ipv6 = server_settings[u"use_ipv6"]
1522
1523
if not debug:
1524
syslogger.setLevel(logging.WARNING)
1525
console.setLevel(logging.WARNING)
1526
1527
if server_settings[u"servicename"] != u"Mandos":
2090
1528
syslogger.setFormatter(logging.Formatter
2091
('Mandos (%s) [%%(process)d]:'
2092
' %%(levelname)s: %%(message)s'
2093
% server_settings["servicename"]))
1529
(u'Mandos (%s) [%%(process)d]:'
1530
u' %%(levelname)s: %%(message)s'
1531
% server_settings[u"servicename"]))
2094
1532
2095
1533
# Parse config file with clients
2096
client_config = configparser.SafeConfigParser(Client.client_defaults)
2097
client_config.read(os.path.join(server_settings["configdir"],
2098
"clients.conf"))
1534
client_defaults = { u"timeout": u"1h",
1535
u"interval": u"5m",
1536
u"checker": u"fping -q -- %%(host)s",
1537
u"host": u"",
1538
}
1539
client_config = configparser.SafeConfigParser(client_defaults)
1540
client_config.read(os.path.join(server_settings[u"configdir"],
1541
u"clients.conf"))
2099
1542
2100
1543
global mandos_dbus_service
2101
1544
mandos_dbus_service = None
2102
1545
2103
tcp_server = MandosServer((server_settings["address"],
2104
server_settings["port"]),
1546
tcp_server = MandosServer((server_settings[u"address"],
1547
server_settings[u"port"]),
2105
1548
ClientHandler,
2106
interface=(server_settings["interface"]
2107
or None),
1549
interface=server_settings[u"interface"],
2108
1550
use_ipv6=use_ipv6,
2109
1551
gnutls_priority=
2110
server_settings["priority"],
1552
server_settings[u"priority"],
2111
1553
use_dbus=use_dbus)
2112
if not debug:
2113
pidfilename = "/var/run/mandos.pid"
2114
try:
2115
pidfile = open(pidfilename, "w")
2116
except IOError:
2117
logger.error("Could not open file %r", pidfilename)
1554
pidfilename = u"/var/run/mandos.pid"
1555
try:
1556
pidfile = open(pidfilename, u"w")
1557
except IOError:
1558
logger.error(u"Could not open file %r", pidfilename)
2118
1559
2119
1560
try:
2120
uid = pwd.getpwnam("_mandos").pw_uid
2121
gid = pwd.getpwnam("_mandos").pw_gid
1561
uid = pwd.getpwnam(u"_mandos").pw_uid
1562
gid = pwd.getpwnam(u"_mandos").pw_gid
2122
1563
except KeyError:
2123
1564
try:
2124
uid = pwd.getpwnam("mandos").pw_uid
2125
gid = pwd.getpwnam("mandos").pw_gid
1565
uid = pwd.getpwnam(u"mandos").pw_uid
1566
gid = pwd.getpwnam(u"mandos").pw_gid
2126
1567
except KeyError:
2127
1568
try:
2128
uid = pwd.getpwnam("nobody").pw_uid
2129
gid = pwd.getpwnam("nobody").pw_gid
1569
uid = pwd.getpwnam(u"nobody").pw_uid
1570
gid = pwd.getpwnam(u"nobody").pw_gid
2130
1571
except KeyError:
2131
1572
uid = 65534
2132
1573
gid = 65534
2133
1574
try:
2134
1575
os.setgid(gid)
2135
1576
os.setuid(uid)
2136
except OSError as error:
1577
except OSError, error:
2137
1578
if error[0] != errno.EPERM:
2138
1579
raise error
2139
1580
1581
# Enable all possible GnuTLS debugging
2140
1582
if debug:
2141
# Enable all possible GnuTLS debugging
2142
2143
1583
# "Use a log level over 10 to enable all debugging options."
2144
1584
# - GnuTLS manual
2145
1585
gnutls.library.functions.gnutls_global_set_log_level(11)
2146
1586
2147
1587
@gnutls.library.types.gnutls_log_func
2148
1588
def debug_gnutls(level, string):
2149
logger.debug("GnuTLS: %s", string[:-1])
1589
logger.debug(u"GnuTLS: %s", string[:-1])
2150
1590
2151
1591
(gnutls.library.functions
2152
1592
.gnutls_global_set_log_function(debug_gnutls))
2153
2154
# Redirect stdin so all checkers get /dev/null
2155
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2156
os.dup2(null, sys.stdin.fileno())
2157
if null > 2:
2158
os.close(null)
2159
else:
2160
# No console logging
2161
logger.removeHandler(console)
2162
2163
# Need to fork before connecting to D-Bus
2164
if not debug:
2165
# Close all input and output, do double fork, etc.
2166
daemon()
2167
2168
gobject.threads_init()
2169
1593
2170
1594
global main_loop
2171
1595
# From the Avahi example code
2175
1599
# End of Avahi example code
2176
1600
if use_dbus:
2177
1601
try:
2178
bus_name = dbus.service.BusName("se.recompile.Mandos",
1602
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2179
1603
bus, do_not_queue=True)
2180
old_bus_name = (dbus.service.BusName
2181
("se.bsnet.fukt.Mandos", bus,
2182
do_not_queue=True))
2183
except dbus.exceptions.NameExistsException as e:
2184
logger.error(unicode(e) + ", disabling D-Bus")
1604
except dbus.exceptions.NameExistsException, e:
1605
logger.error(unicode(e) + u", disabling D-Bus")
2185
1606
use_dbus = False
2186
server_settings["use_dbus"] = False
1607
server_settings[u"use_dbus"] = False
2187
1608
tcp_server.use_dbus = False
2188
1609
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2189
service = AvahiServiceToSyslog(name =
2190
server_settings["servicename"],
2191
servicetype = "_mandos._tcp",
2192
protocol = protocol, bus = bus)
1610
service = AvahiService(name = server_settings[u"servicename"],
1611
servicetype = u"_mandos._tcp",
1612
protocol = protocol, bus = bus)
2193
1613
if server_settings["interface"]:
2194
1614
service.interface = (if_nametoindex
2195
(str(server_settings["interface"])))
2196
2197
global multiprocessing_manager
2198
multiprocessing_manager = multiprocessing.Manager()
1615
(str(server_settings[u"interface"])))
2199
1616
2200
1617
client_class = Client
2201
1618
if use_dbus:
2202
client_class = functools.partial(ClientDBusTransitional,
2203
bus = bus)
2204
2205
client_settings = Client.config_parser(client_config)
2206
old_client_settings = {}
2207
clients_data = {}
2208
2209
# Get client data and settings from last running state.
2210
if server_settings["restore"]:
2211
try:
2212
with open(stored_state_path, "rb") as stored_state:
2213
clients_data, old_client_settings = (pickle.load
2214
(stored_state))
2215
os.remove(stored_state_path)
2216
except IOError as e:
2217
logger.warning("Could not load persistent state: {0}"
2218
.format(e))
2219
if e.errno != errno.ENOENT:
2220
raise
2221
2222
with PGPEngine() as pgp:
2223
for client_name, client in clients_data.iteritems():
2224
# Decide which value to use after restoring saved state.
2225
# We have three different values: Old config file,
2226
# new config file, and saved state.
2227
# New config value takes precedence if it differs from old
2228
# config value, otherwise use saved state.
2229
for name, value in client_settings[client_name].items():
2230
try:
2231
# For each value in new config, check if it
2232
# differs from the old config value (Except for
2233
# the "secret" attribute)
2234
if (name != "secret" and
2235
value != old_client_settings[client_name]
2236
[name]):
2237
client[name] = value
2238
except KeyError:
2239
pass
2240
2241
# Clients who has passed its expire date can still be
2242
# enabled if its last checker was successful. Clients
2243
# whose checker failed before we stored its state is
2244
# assumed to have failed all checkers during downtime.
2245
if client["enabled"]:
2246
if datetime.datetime.utcnow() >= client["expires"]:
2247
if not client["last_checked_ok"]:
2248
logger.warning(
2249
"disabling client {0} - Client never "
2250
"performed a successfull checker"
2251
.format(client["name"]))
2252
client["enabled"] = False
2253
elif client["last_checker_status"] != 0:
2254
logger.warning(
2255
"disabling client {0} - Client "
2256
"last checker failed with error code {1}"
2257
.format(client["name"],
2258
client["last_checker_status"]))
2259
client["enabled"] = False
2260
else:
2261
client["expires"] = (datetime.datetime
2262
.utcnow()
2263
+ client["timeout"])
2264
2265
try:
2266
client["secret"] = (
2267
pgp.decrypt(client["encrypted_secret"],
2268
client_settings[client_name]
2269
["secret"]))
2270
except PGPError:
2271
# If decryption fails, we use secret from new settings
2272
logger.debug("Failed to decrypt {0} old secret"
2273
.format(client_name))
2274
client["secret"] = (
2275
client_settings[client_name]["secret"])
2276
2277
2278
# Add/remove clients based on new changes made to config
2279
for client_name in set(old_client_settings) - set(client_settings):
2280
del clients_data[client_name]
2281
for client_name in set(client_settings) - set(old_client_settings):
2282
clients_data[client_name] = client_settings[client_name]
2283
2284
# Create clients all clients
2285
for client_name, client in clients_data.iteritems():
2286
tcp_server.clients[client_name] = client_class(
2287
name = client_name, settings = client)
2288
1619
client_class = functools.partial(ClientDBus, bus = bus)
1620
tcp_server.clients.update(set(
1621
client_class(name = section,
1622
config= dict(client_config.items(section)))
1623
for section in client_config.sections()))
2289
1624
if not tcp_server.clients:
2290
logger.warning("No clients defined")
2291
1625
logger.warning(u"No clients defined")
1626
1627
if debug:
1628
# Redirect stdin so all checkers get /dev/null
1629
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1630
os.dup2(null, sys.stdin.fileno())
1631
if null > 2:
1632
os.close(null)
1633
else:
1634
# No console logging
1635
logger.removeHandler(console)
1636
# Close all input and output, do double fork, etc.
1637
daemon()
1638
1639
try:
1640
with pidfile:
1641
pid = os.getpid()
1642
pidfile.write(str(pid) + "\n")
1643
del pidfile
1644
except IOError:
1645
logger.error(u"Could not write to file %r with PID %d",
1646
pidfilename, pid)
1647
except NameError:
1648
# "pidfile" was never created
1649
pass
1650
del pidfilename
1651
2292
1652
if not debug:
2293
try:
2294
with pidfile:
2295
pid = os.getpid()
2296
pidfile.write(str(pid) + "\n".encode("utf-8"))
2297
del pidfile
2298
except IOError:
2299
logger.error("Could not write to file %r with PID %d",
2300
pidfilename, pid)
2301
except NameError:
2302
# "pidfile" was never created
2303
pass
2304
del pidfilename
2305
1653
signal.signal(signal.SIGINT, signal.SIG_IGN)
2306
2307
1654
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2308
1655
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2309
1656
2311
1658
class MandosDBusService(dbus.service.Object):
2312
1659
"""A D-Bus proxy object"""
2313
1660
def __init__(self):
2314
dbus.service.Object.__init__(self, bus, "/")
2315
_interface = "se.recompile.Mandos"
1661
dbus.service.Object.__init__(self, bus, u"/")
1662
_interface = u"se.bsnet.fukt.Mandos"
2316
1663
2317
@dbus.service.signal(_interface, signature="o")
1664
@dbus.service.signal(_interface, signature=u"o")
2318
1665
def ClientAdded(self, objpath):
2319
1666
"D-Bus signal"
2320
1667
pass
2321
1668
2322
@dbus.service.signal(_interface, signature="ss")
1669
@dbus.service.signal(_interface, signature=u"ss")
2323
1670
def ClientNotFound(self, fingerprint, address):
2324
1671
"D-Bus signal"
2325
1672
pass
2326
1673
2327
@dbus.service.signal(_interface, signature="os")
1674
@dbus.service.signal(_interface, signature=u"os")
2328
1675
def ClientRemoved(self, objpath, name):
2329
1676
"D-Bus signal"
2330
1677
pass
2331
1678
2332
@dbus.service.method(_interface, out_signature="ao")
1679
@dbus.service.method(_interface, out_signature=u"ao")
2333
1680
def GetAllClients(self):
2334
1681
"D-Bus method"
2335
1682
return dbus.Array(c.dbus_object_path
2336
for c in
2337
tcp_server.clients.itervalues())
1683
for c in tcp_server.clients)
2338
1684
2339
1685
@dbus.service.method(_interface,
2340
out_signature="a{oa{sv}}")
1686
out_signature=u"a{oa{sv}}")
2341
1687
def GetAllClientsWithProperties(self):
2342
1688
"D-Bus method"
2343
1689
return dbus.Dictionary(
2344
((c.dbus_object_path, c.GetAll(""))
2345
for c in tcp_server.clients.itervalues()),
2346
signature="oa{sv}")
1690
((c.dbus_object_path, c.GetAll(u""))
1691
for c in tcp_server.clients),
1692
signature=u"oa{sv}")
2347
1693
2348
@dbus.service.method(_interface, in_signature="o")
1694
@dbus.service.method(_interface, in_signature=u"o")
2349
1695
def RemoveClient(self, object_path):
2350
1696
"D-Bus method"
2351
for c in tcp_server.clients.itervalues():
1697
for c in tcp_server.clients:
2352
1698
if c.dbus_object_path == object_path:
2353
del tcp_server.clients[c.name]
1699
tcp_server.clients.remove(c)
2354
1700
c.remove_from_connection()
2355
1701
# Don't signal anything except ClientRemoved
2356
1702
c.disable(quiet=True)
2361
1707
2362
1708
del _interface
2363
1709
2364
class MandosDBusServiceTransitional(MandosDBusService):
2365
__metaclass__ = AlternateDBusNamesMetaclass
2366
mandos_dbus_service = MandosDBusServiceTransitional()
1710
mandos_dbus_service = MandosDBusService()
2367
1711
2368
1712
def cleanup():
2369
1713
"Cleanup function; run on exit"
2370
1714
service.cleanup()
2371
1715
2372
multiprocessing.active_children()
2373
if not (tcp_server.clients or client_settings):
2374
return
2375
2376
# Store client before exiting. Secrets are encrypted with key
2377
# based on what config file has. If config file is
2378
# removed/edited, old secret will thus be unrecovable.
2379
clients = {}
2380
with PGPEngine() as pgp:
2381
for client in tcp_server.clients.itervalues():
2382
key = client_settings[client.name]["secret"]
2383
client.encrypted_secret = pgp.encrypt(client.secret,
2384
key)
2385
client_dict = {}
2386
2387
# A list of attributes that can not be pickled
2388
# + secret.
2389
exclude = set(("bus", "changedstate", "secret",
2390
"checker"))
2391
for name, typ in (inspect.getmembers
2392
(dbus.service.Object)):
2393
exclude.add(name)
2394
2395
client_dict["encrypted_secret"] = (client
2396
.encrypted_secret)
2397
for attr in client.client_structure:
2398
if attr not in exclude:
2399
client_dict[attr] = getattr(client, attr)
2400
2401
clients[client.name] = client_dict
2402
del client_settings[client.name]["secret"]
2403
2404
try:
2405
with os.fdopen(os.open(stored_state_path,
2406
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2407
0600), "wb") as stored_state:
2408
pickle.dump((clients, client_settings), stored_state)
2409
except (IOError, OSError) as e:
2410
logger.warning("Could not save persistent state: {0}"
2411
.format(e))
2412
if e.errno not in (errno.ENOENT, errno.EACCES):
2413
raise
2414
2415
# Delete all clients, and settings from config
2416
1716
while tcp_server.clients:
2417
name, client = tcp_server.clients.popitem()
1717
client = tcp_server.clients.pop()
2418
1718
if use_dbus:
2419
1719
client.remove_from_connection()
1720
client.disable_hook = None
2420
1721
# Don't signal anything except ClientRemoved
2421
1722
client.disable(quiet=True)
2422
1723
if use_dbus:
2423
1724
# Emit D-Bus signal
2424
mandos_dbus_service.ClientRemoved(client
2425
.dbus_object_path,
1725
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2426
1726
client.name)
2427
client_settings.clear()
2428
1727
2429
1728
atexit.register(cleanup)
2430
1729
2431
for client in tcp_server.clients.itervalues():
1730
for client in tcp_server.clients:
2432
1731
if use_dbus:
2433
1732
# Emit D-Bus signal
2434
1733
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2435
# Need to initiate checking of clients
2436
if client.enabled:
2437
client.init_checker()
1734
client.enable()
2438
1735
2439
1736
tcp_server.enable()
2440
1737
tcp_server.server_activate()
2442
1739
# Find out what port we got
2443
1740
service.port = tcp_server.socket.getsockname()[1]
2444
1741
if use_ipv6:
2445
logger.info("Now listening on address %r, port %d,"
1742
logger.info(u"Now listening on address %r, port %d,"
2446
1743
" flowinfo %d, scope_id %d"
2447
1744
% tcp_server.socket.getsockname())
2448
1745
else: # IPv4
2449
logger.info("Now listening on address %r, port %d"
1746
logger.info(u"Now listening on address %r, port %d"
2450
1747
% tcp_server.socket.getsockname())
2451
1748
2452
1749
#service.interface = tcp_server.socket.getsockname()[3]
2455
1752
# From the Avahi example code
2456
1753
try:
2457
1754
service.activate()
2458
except dbus.exceptions.DBusException as error:
2459
logger.critical("DBusException: %s", error)
1755
except dbus.exceptions.DBusException, error:
1756
logger.critical(u"DBusException: %s", error)
2460
1757
cleanup()
2461
1758
sys.exit(1)
2462
1759
# End of Avahi example code
2466
1763
(tcp_server.handle_request
2467
1764
(*args[2:], **kwargs) or True))
2468
1765
2469
logger.debug("Starting main loop")
1766
logger.debug(u"Starting main loop")
2470
1767
main_loop.run()
2471
except AvahiError as error:
2472
logger.critical("AvahiError: %s", error)
1768
except AvahiError, error:
1769
logger.critical(u"AvahiError: %s", error)
2473
1770
cleanup()
2474
1771
sys.exit(1)
2475
1772
except KeyboardInterrupt:
2476
1773
if debug:
2477
print("", file=sys.stderr)
2478
logger.debug("Server received KeyboardInterrupt")
2479
logger.debug("Server exiting")
1774
print >> sys.stderr
1775
logger.debug(u"Server received KeyboardInterrupt")
1776
logger.debug(u"Server exiting")
2480
1777
# Must run before the D-Bus bus name gets deregistered
2481
1778
cleanup()
2482
1779
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0