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- Committer: Teddy Hogeborn
- Date: 2009-04-17 01:16:37 UTC
- Revision ID: teddy@fukt.bsnet.se-20090417011637-bcqjpm7fskm4370v
Code cleanup and one bug fix.
* mandos (Client.enable): Bug fix: Do not enable if already enabled.
(MandosServer.__init__): Create empty set of clients if none passed.
(main): Do not create clients set; do not pass a clients set to
MandosServer. Use tcp_server.clients throughout.
* mandos (Client.enable): Bug fix: Do not enable if already enabled.
(MandosServer.__init__): Create empty set of clients if none passed.
(main): Do not create clients set; do not pass a clients set to
MandosServer. Use tcp_server.clients throughout.
- files removed:
- DBUS-API
- debian/source
- 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
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# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
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# <http://www.gnu.org/licenses/>.
30
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#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
34
from __future__ import division, with_statement, absolute_import
36
35
37
36
import SocketServer as socketserver
38
37
import socket
39
import argparse
38
import optparse
40
39
import datetime
41
40
import errno
42
41
import gnutls.crypto
56
55
import logging
57
56
import logging.handlers
58
57
import pwd
59
import contextlib
58
from contextlib import closing
60
59
import struct
61
60
import fcntl
62
61
import functools
63
import cPickle as pickle
64
import multiprocessing
65
import types
66
import binascii
67
import tempfile
68
62
69
63
import dbus
70
64
import dbus.service
73
67
from dbus.mainloop.glib import DBusGMainLoop
74
68
import ctypes
75
69
import ctypes.util
76
import xml.dom.minidom
77
import inspect
78
import GnuPGInterface
79
70
80
71
try:
81
72
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
86
77
SO_BINDTODEVICE = None
87
78
88
79
89
version = "1.4.1"
90
stored_state_file = "clients.pickle"
80
version = "1.0.8"
91
81
92
logger = logging.getLogger()
82
logger = logging.Logger(u'mandos')
93
83
syslogger = (logging.handlers.SysLogHandler
94
84
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
96
97
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
101
except (OSError, AttributeError):
102
def if_nametoindex(interface):
103
"Get an interface index the hard way, i.e. using fcntl()"
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
with contextlib.closing(socket.socket()) as s:
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
111
return interface_index
112
113
114
def initlogger(level=logging.WARNING):
115
"""init logger and add loglevel"""
116
117
syslogger.setFormatter(logging.Formatter
118
('Mandos [%(process)d]: %(levelname)s:'
119
' %(message)s'))
120
logger.addHandler(syslogger)
121
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
128
logger.setLevel(level)
129
130
131
class CryptoError(Exception):
132
pass
133
134
135
class Crypto(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 CryptoError(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 CryptoError(e)
205
self.gnupg.passphrase = None
206
return decrypted_plaintext
207
208
85
address = "/dev/log"))
86
syslogger.setFormatter(logging.Formatter
87
(u'Mandos [%(process)d]: %(levelname)s:'
88
u' %(message)s'))
89
logger.addHandler(syslogger)
90
91
console = logging.StreamHandler()
92
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
93
u' %(levelname)s:'
94
u' %(message)s'))
95
logger.addHandler(console)
209
96
210
97
class AvahiError(Exception):
211
98
def __init__(self, value, *args, **kwargs):
227
114
Attributes:
228
115
interface: integer; avahi.IF_UNSPEC or an interface index.
229
116
Used to optionally bind to the specified interface.
230
name: string; Example: 'Mandos'
231
type: string; Example: '_mandos._tcp'.
117
name: string; Example: u'Mandos'
118
type: string; Example: u'_mandos._tcp'.
232
119
See <http://www.dns-sd.org/ServiceTypes.html>
233
120
port: integer; what port to announce
234
121
TXT: list of strings; TXT record for the service
243
130
"""
244
131
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
245
132
servicetype = None, port = None, TXT = None,
246
domain = "", host = "", max_renames = 32768,
133
domain = u"", host = u"", max_renames = 32768,
247
134
protocol = avahi.PROTO_UNSPEC, bus = None):
248
135
self.interface = interface
249
136
self.name = name
258
145
self.group = None # our entry group
259
146
self.server = None
260
147
self.bus = bus
261
self.entry_group_state_changed_match = None
262
148
def rename(self):
263
149
"""Derived from the Avahi example code"""
264
150
if self.rename_count >= self.max_renames:
265
logger.critical("No suitable Zeroconf service name found"
266
" after %i retries, exiting.",
151
logger.critical(u"No suitable Zeroconf service name found"
152
u" after %i retries, exiting.",
267
153
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)
154
raise AvahiServiceError(u"Too many renames")
155
self.name = self.server.GetAlternativeServiceName(self.name)
156
logger.info(u"Changing Zeroconf service name to %r ...",
157
unicode(self.name))
158
syslogger.setFormatter(logging.Formatter
159
(u'Mandos (%s) [%%(process)d]:'
160
u' %%(levelname)s: %%(message)s'
161
% self.name))
273
162
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)
163
self.add()
280
164
self.rename_count += 1
281
165
def remove(self):
282
166
"""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
167
if self.group is not None:
287
168
self.group.Reset()
288
169
def add(self):
289
170
"""Derived from the Avahi example code"""
290
self.remove()
291
171
if self.group is None:
292
172
self.group = dbus.Interface(
293
173
self.bus.get_object(avahi.DBUS_NAME,
294
174
self.server.EntryGroupNew()),
295
175
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' ...",
176
self.group.connect_to_signal('StateChanged',
177
self.entry_group_state_changed)
178
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
300
179
self.name, self.type)
301
180
self.group.AddService(
302
181
self.interface,
309
188
self.group.Commit()
310
189
def entry_group_state_changed(self, state, error):
311
190
"""Derived from the Avahi example code"""
312
logger.debug("Avahi entry group state change: %i", state)
191
logger.debug(u"Avahi state change: %i", state)
313
192
314
193
if state == avahi.ENTRY_GROUP_ESTABLISHED:
315
logger.debug("Zeroconf service established.")
194
logger.debug(u"Zeroconf service established.")
316
195
elif state == avahi.ENTRY_GROUP_COLLISION:
317
logger.info("Zeroconf service name collision.")
196
logger.warning(u"Zeroconf service name collision.")
318
197
self.rename()
319
198
elif state == avahi.ENTRY_GROUP_FAILURE:
320
logger.critical("Avahi: Error in group state changed %s",
199
logger.critical(u"Avahi: Error in group state changed %s",
321
200
unicode(error))
322
raise AvahiGroupError("State changed: %s"
201
raise AvahiGroupError(u"State changed: %s"
323
202
% unicode(error))
324
203
def cleanup(self):
325
204
"""Derived from the Avahi example code"""
326
205
if self.group is not None:
327
try:
328
self.group.Free()
329
except (dbus.exceptions.UnknownMethodException,
330
dbus.exceptions.DBusException):
331
pass
206
self.group.Free()
332
207
self.group = None
333
self.remove()
334
def server_state_changed(self, state, error=None):
208
def server_state_changed(self, state):
335
209
"""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()
210
if state == avahi.SERVER_COLLISION:
211
logger.error(u"Zeroconf server name collision")
212
self.remove()
351
213
elif state == avahi.SERVER_RUNNING:
352
214
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
215
def activate(self):
359
216
"""Derived from the Avahi example code"""
360
217
if self.server is None:
361
218
self.server = dbus.Interface(
362
219
self.bus.get_object(avahi.DBUS_NAME,
363
avahi.DBUS_PATH_SERVER,
364
follow_name_owner_changes=True),
220
avahi.DBUS_PATH_SERVER),
365
221
avahi.DBUS_INTERFACE_SERVER)
366
self.server.connect_to_signal("StateChanged",
222
self.server.connect_to_signal(u"StateChanged",
367
223
self.server_state_changed)
368
224
self.server_state_changed(self.server.GetState())
369
225
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
226
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
227
class Client(object):
387
228
"""A representation of a client host served by this server.
388
229
389
230
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
231
name: string; from the config file, used in log messages and
232
D-Bus identifiers
233
fingerprint: string (40 or 32 hexadecimal digits); used to
234
uniquely identify the client
235
secret: bytestring; sent verbatim (over TLS) to client
236
host: string; available for use by the checker command
237
created: datetime.datetime(); (UTC) object creation
238
last_enabled: datetime.datetime(); (UTC)
239
enabled: bool()
240
last_checked_ok: datetime.datetime(); (UTC) or None
241
timeout: datetime.timedelta(); How long from last_checked_ok
242
until this client is invalid
243
interval: datetime.timedelta(); How often to start a new checker
244
disable_hook: If set, called by disable() as disable_hook(self)
393
245
checker: subprocess.Popen(); a running checker process used
394
246
to see if the client lives.
395
247
'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
248
checker_initiator_tag: a gobject event source tag, or None
249
disable_initiator_tag: - '' -
250
checker_callback_tag: - '' -
251
checker_command: string; External command which is run to check if
252
client lives. %() expansions are done at
399
253
runtime with vars(self) as dict, so that for
400
254
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
255
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
415
last_checker_status: integer between 0 and 255 reflecting exit
416
status of last checker. -1 reflects crashed
417
checker, or None.
418
last_enabled: datetime.datetime(); (UTC) or None
419
name: string; from the config file, used in log messages and
420
D-Bus identifiers
421
secret: bytestring; sent verbatim (over TLS) to client
422
timeout: datetime.timedelta(); How long from last_checked_ok
423
until this client is disabled
424
extended_timeout: extra long timeout when password has been sent
425
runtime_expansions: Allowed attributes for runtime expansion.
426
expires: datetime.datetime(); time (UTC) when a client will be
427
disabled, or None
428
256
"""
429
257
430
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
433
"last_enabled", "name", "timeout")
258
@staticmethod
259
def _datetime_to_milliseconds(dt):
260
"Convert a datetime.datetime() to milliseconds"
261
return ((dt.days * 24 * 60 * 60 * 1000)
262
+ (dt.seconds * 1000)
263
+ (dt.microseconds // 1000))
434
264
435
265
def timeout_milliseconds(self):
436
266
"Return the 'timeout' attribute in milliseconds"
437
return _timedelta_to_milliseconds(self.timeout)
438
439
def extended_timeout_milliseconds(self):
440
"Return the 'extended_timeout' attribute in milliseconds"
441
return _timedelta_to_milliseconds(self.extended_timeout)
267
return self._datetime_to_milliseconds(self.timeout)
442
268
443
269
def interval_milliseconds(self):
444
270
"Return the 'interval' attribute in milliseconds"
445
return _timedelta_to_milliseconds(self.interval)
446
447
def approval_delay_milliseconds(self):
448
return _timedelta_to_milliseconds(self.approval_delay)
449
450
def __init__(self, name = None, config=None):
271
return self._datetime_to_milliseconds(self.interval)
272
273
def __init__(self, name = None, disable_hook=None, config=None):
451
274
"""Note: the 'checker' key in 'config' sets the
452
275
'checker_command' attribute and *not* the 'checker'
453
276
attribute."""
454
277
self.name = name
455
278
if config is None:
456
279
config = {}
457
logger.debug("Creating client %r", self.name)
280
logger.debug(u"Creating client %r", self.name)
458
281
# Uppercase and remove spaces from fingerprint for later
459
282
# comparison purposes with return value from the fingerprint()
460
283
# function
461
self.fingerprint = (config["fingerprint"].upper()
462
.replace(" ", ""))
463
logger.debug(" Fingerprint: %s", self.fingerprint)
464
if "secret" in config:
465
self.secret = config["secret"].decode("base64")
466
elif "secfile" in config:
467
with open(os.path.expanduser(os.path.expandvars
468
(config["secfile"])),
469
"rb") as secfile:
284
self.fingerprint = (config[u"fingerprint"].upper()
285
.replace(u" ", u""))
286
logger.debug(u" Fingerprint: %s", self.fingerprint)
287
if u"secret" in config:
288
self.secret = config[u"secret"].decode(u"base64")
289
elif u"secfile" in config:
290
with closing(open(os.path.expanduser
291
(os.path.expandvars
292
(config[u"secfile"])))) as secfile:
470
293
self.secret = secfile.read()
471
294
else:
472
raise TypeError("No secret or secfile for client %s"
295
raise TypeError(u"No secret or secfile for client %s"
473
296
% self.name)
474
self.host = config.get("host", "")
297
self.host = config.get(u"host", u"")
475
298
self.created = datetime.datetime.utcnow()
476
self.enabled = config.get("enabled", True)
477
self.last_approval_request = None
478
if self.enabled:
479
self.last_enabled = datetime.datetime.utcnow()
480
else:
481
self.last_enabled = None
299
self.enabled = False
300
self.last_enabled = None
482
301
self.last_checked_ok = None
483
self.last_checker_status = None
484
self.timeout = string_to_delta(config["timeout"])
485
self.extended_timeout = string_to_delta(config
486
["extended_timeout"])
487
self.interval = string_to_delta(config["interval"])
302
self.timeout = string_to_delta(config[u"timeout"])
303
self.interval = string_to_delta(config[u"interval"])
304
self.disable_hook = disable_hook
488
305
self.checker = None
489
306
self.checker_initiator_tag = None
490
307
self.disable_initiator_tag = None
491
if self.enabled:
492
self.expires = datetime.datetime.utcnow() + self.timeout
493
else:
494
self.expires = None
495
308
self.checker_callback_tag = None
496
self.checker_command = config["checker"]
309
self.checker_command = config[u"checker"]
497
310
self.current_checker_command = None
498
self._approved = None
499
self.approved_by_default = config.get("approved_by_default",
500
True)
501
self.approvals_pending = 0
502
self.approval_delay = string_to_delta(
503
config["approval_delay"])
504
self.approval_duration = string_to_delta(
505
config["approval_duration"])
506
self.changedstate = (multiprocessing_manager
507
.Condition(multiprocessing_manager
508
.Lock()))
509
self.client_structure = [attr for attr in
510
self.__dict__.iterkeys()
511
if not attr.startswith("_")]
512
self.client_structure.append("client_structure")
513
514
for name, t in inspect.getmembers(type(self),
515
lambda obj:
516
isinstance(obj,
517
property)):
518
if not name.startswith("_"):
519
self.client_structure.append(name)
520
521
# Send notice to process children that client state has changed
522
def send_changedstate(self):
523
with self.changedstate:
524
self.changedstate.notify_all()
311
self.last_connect = None
525
312
526
313
def enable(self):
527
314
"""Start this client's checker and timeout hooks"""
528
if getattr(self, "enabled", False):
315
if getattr(self, u"enabled", False):
529
316
# Already enabled
530
317
return
531
self.send_changedstate()
532
self.expires = datetime.datetime.utcnow() + self.timeout
533
self.enabled = True
534
318
self.last_enabled = datetime.datetime.utcnow()
535
self.init_checker()
536
537
def disable(self, quiet=True):
538
"""Disable this client."""
539
if not getattr(self, "enabled", False):
540
return False
541
if not quiet:
542
self.send_changedstate()
543
if not quiet:
544
logger.info("Disabling client %s", self.name)
545
if getattr(self, "disable_initiator_tag", False):
546
gobject.source_remove(self.disable_initiator_tag)
547
self.disable_initiator_tag = None
548
self.expires = None
549
if getattr(self, "checker_initiator_tag", False):
550
gobject.source_remove(self.checker_initiator_tag)
551
self.checker_initiator_tag = None
552
self.stop_checker()
553
self.enabled = False
554
# Do not run this again if called by a gobject.timeout_add
555
return False
556
557
def __del__(self):
558
self.disable()
559
560
def init_checker(self):
561
319
# Schedule a new checker to be started an 'interval' from now,
562
320
# and every interval from then on.
563
321
self.checker_initiator_tag = (gobject.timeout_add
564
322
(self.interval_milliseconds(),
565
323
self.start_checker))
324
# Also start a new checker *right now*.
325
self.start_checker()
566
326
# Schedule a disable() when 'timeout' has passed
567
327
self.disable_initiator_tag = (gobject.timeout_add
568
328
(self.timeout_milliseconds(),
569
329
self.disable))
570
# Also start a new checker *right now*.
571
self.start_checker()
330
self.enabled = True
331
332
def disable(self):
333
"""Disable this client."""
334
if not getattr(self, "enabled", False):
335
return False
336
logger.info(u"Disabling client %s", self.name)
337
if getattr(self, u"disable_initiator_tag", False):
338
gobject.source_remove(self.disable_initiator_tag)
339
self.disable_initiator_tag = None
340
if getattr(self, u"checker_initiator_tag", False):
341
gobject.source_remove(self.checker_initiator_tag)
342
self.checker_initiator_tag = None
343
self.stop_checker()
344
if self.disable_hook:
345
self.disable_hook(self)
346
self.enabled = False
347
# Do not run this again if called by a gobject.timeout_add
348
return False
349
350
def __del__(self):
351
self.disable_hook = None
352
self.disable()
572
353
573
354
def checker_callback(self, pid, condition, command):
574
355
"""The checker has completed, so take appropriate actions."""
575
356
self.checker_callback_tag = None
576
357
self.checker = None
577
358
if os.WIFEXITED(condition):
578
self.last_checker_status = os.WEXITSTATUS(condition)
579
if self.last_checker_status == 0:
580
logger.info("Checker for %(name)s succeeded",
359
exitstatus = os.WEXITSTATUS(condition)
360
if exitstatus == 0:
361
logger.info(u"Checker for %(name)s succeeded",
581
362
vars(self))
582
363
self.checked_ok()
583
364
else:
584
logger.info("Checker for %(name)s failed",
365
logger.info(u"Checker for %(name)s failed",
585
366
vars(self))
586
367
else:
587
self.last_checker_status = -1
588
logger.warning("Checker for %(name)s crashed?",
368
logger.warning(u"Checker for %(name)s crashed?",
589
369
vars(self))
590
370
591
def checked_ok(self, timeout=None):
371
def checked_ok(self):
592
372
"""Bump up the timeout for this client.
593
373
594
374
This should only be called when the client has been seen,
595
375
alive and well.
596
376
"""
597
if timeout is None:
598
timeout = self.timeout
599
377
self.last_checked_ok = datetime.datetime.utcnow()
600
if self.disable_initiator_tag is not None:
601
gobject.source_remove(self.disable_initiator_tag)
602
if getattr(self, "enabled", False):
603
self.disable_initiator_tag = (gobject.timeout_add
604
(_timedelta_to_milliseconds
605
(timeout), self.disable))
606
self.expires = datetime.datetime.utcnow() + timeout
607
608
def need_approval(self):
609
self.last_approval_request = datetime.datetime.utcnow()
378
gobject.source_remove(self.disable_initiator_tag)
379
self.disable_initiator_tag = (gobject.timeout_add
380
(self.timeout_milliseconds(),
381
self.disable))
610
382
611
383
def start_checker(self):
612
384
"""Start a new checker subprocess if one is not running.
619
391
# client would inevitably timeout, since no checker would get
620
392
# a chance to run to completion. If we instead leave running
621
393
# checkers alone, the checker would have to take more time
622
# than 'timeout' for the client to be disabled, which is as it
623
# should be.
394
# than 'timeout' for the client to be declared invalid, which
395
# is as it should be.
624
396
625
397
# If a checker exists, make sure it is not a zombie
626
try:
398
if self.checker is not None:
627
399
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
628
except (AttributeError, OSError) as error:
629
if (isinstance(error, OSError)
630
and error.errno != errno.ECHILD):
631
raise error
632
else:
633
400
if pid:
634
logger.warning("Checker was a zombie")
401
logger.warning(u"Checker was a zombie")
635
402
gobject.source_remove(self.checker_callback_tag)
636
403
self.checker_callback(pid, status,
637
404
self.current_checker_command)
642
409
command = self.checker_command % self.host
643
410
except TypeError:
644
411
# Escape attributes for the shell
645
escaped_attrs = dict(
646
(attr,
647
re.escape(unicode(str(getattr(self, attr, "")),
648
errors=
649
'replace')))
650
for attr in
651
self.runtime_expansions)
652
412
escaped_attrs = dict((key,
413
re.escape(unicode(str(val),
414
errors=
415
u'replace')))
416
for key, val in
417
vars(self).iteritems())
653
418
try:
654
419
command = self.checker_command % escaped_attrs
655
except TypeError as error:
656
logger.error('Could not format string "%s":'
657
' %s', self.checker_command, error)
420
except TypeError, error:
421
logger.error(u'Could not format string "%s":'
422
u' %s', self.checker_command, error)
658
423
return True # Try again later
659
424
self.current_checker_command = command
660
425
try:
661
logger.info("Starting checker %r for %s",
426
logger.info(u"Starting checker %r for %s",
662
427
command, self.name)
663
428
# We don't need to redirect stdout and stderr, since
664
429
# in normal mode, that is already done by daemon(),
666
431
# always replaced by /dev/null.)
667
432
self.checker = subprocess.Popen(command,
668
433
close_fds=True,
669
shell=True, cwd="/")
434
shell=True, cwd=u"/")
670
435
self.checker_callback_tag = (gobject.child_watch_add
671
436
(self.checker.pid,
672
437
self.checker_callback,
677
442
if pid:
678
443
gobject.source_remove(self.checker_callback_tag)
679
444
self.checker_callback(pid, status, command)
680
except OSError as error:
681
logger.error("Failed to start subprocess: %s",
445
except OSError, error:
446
logger.error(u"Failed to start subprocess: %s",
682
447
error)
683
448
# Re-run this periodically if run by gobject.timeout_add
684
449
return True
688
453
if self.checker_callback_tag:
689
454
gobject.source_remove(self.checker_callback_tag)
690
455
self.checker_callback_tag = None
691
if getattr(self, "checker", None) is None:
456
if getattr(self, u"checker", None) is None:
692
457
return
693
logger.debug("Stopping checker for %(name)s", vars(self))
458
logger.debug(u"Stopping checker for %(name)s", vars(self))
694
459
try:
695
460
os.kill(self.checker.pid, signal.SIGTERM)
696
#time.sleep(0.5)
461
#os.sleep(0.5)
697
462
#if self.checker.poll() is None:
698
463
# os.kill(self.checker.pid, signal.SIGKILL)
699
except OSError as error:
464
except OSError, error:
700
465
if error.errno != errno.ESRCH: # No such process
701
466
raise
702
467
self.checker = None
703
704
705
def dbus_service_property(dbus_interface, signature="v",
706
access="readwrite", byte_arrays=False):
707
"""Decorators for marking methods of a DBusObjectWithProperties to
708
become properties on the D-Bus.
709
710
The decorated method will be called with no arguments by "Get"
711
and with one argument by "Set".
712
713
The parameters, where they are supported, are the same as
714
dbus.service.method, except there is only "signature", since the
715
type from Get() and the type sent to Set() is the same.
716
"""
717
# Encoding deeply encoded byte arrays is not supported yet by the
718
# "Set" method, so we fail early here:
719
if byte_arrays and signature != "ay":
720
raise ValueError("Byte arrays not supported for non-'ay'"
721
" signature %r" % signature)
722
def decorator(func):
723
func._dbus_is_property = True
724
func._dbus_interface = dbus_interface
725
func._dbus_signature = signature
726
func._dbus_access = access
727
func._dbus_name = func.__name__
728
if func._dbus_name.endswith("_dbus_property"):
729
func._dbus_name = func._dbus_name[:-14]
730
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
731
return func
732
return decorator
733
734
735
class DBusPropertyException(dbus.exceptions.DBusException):
736
"""A base class for D-Bus property-related exceptions
737
"""
738
def __unicode__(self):
739
return unicode(str(self))
740
741
742
class DBusPropertyAccessException(DBusPropertyException):
743
"""A property's access permissions disallows an operation.
744
"""
745
pass
746
747
748
class DBusPropertyNotFound(DBusPropertyException):
749
"""An attempt was made to access a non-existing property.
750
"""
751
pass
752
753
754
class DBusObjectWithProperties(dbus.service.Object):
755
"""A D-Bus object with properties.
756
757
Classes inheriting from this can use the dbus_service_property
758
decorator to expose methods as D-Bus properties. It exposes the
759
standard Get(), Set(), and GetAll() methods on the D-Bus.
760
"""
761
762
@staticmethod
763
def _is_dbus_property(obj):
764
return getattr(obj, "_dbus_is_property", False)
765
766
def _get_all_dbus_properties(self):
767
"""Returns a generator of (name, attribute) pairs
768
"""
769
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
770
for cls in self.__class__.__mro__
771
for name, prop in
772
inspect.getmembers(cls, self._is_dbus_property))
773
774
def _get_dbus_property(self, interface_name, property_name):
775
"""Returns a bound method if one exists which is a D-Bus
776
property with the specified name and interface.
777
"""
778
for cls in self.__class__.__mro__:
779
for name, value in (inspect.getmembers
780
(cls, self._is_dbus_property)):
781
if (value._dbus_name == property_name
782
and value._dbus_interface == interface_name):
783
return value.__get__(self)
784
785
# No such property
786
raise DBusPropertyNotFound(self.dbus_object_path + ":"
787
+ interface_name + "."
788
+ property_name)
789
790
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
791
out_signature="v")
792
def Get(self, interface_name, property_name):
793
"""Standard D-Bus property Get() method, see D-Bus standard.
794
"""
795
prop = self._get_dbus_property(interface_name, property_name)
796
if prop._dbus_access == "write":
797
raise DBusPropertyAccessException(property_name)
798
value = prop()
799
if not hasattr(value, "variant_level"):
800
return value
801
return type(value)(value, variant_level=value.variant_level+1)
802
803
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
804
def Set(self, interface_name, property_name, value):
805
"""Standard D-Bus property Set() method, see D-Bus standard.
806
"""
807
prop = self._get_dbus_property(interface_name, property_name)
808
if prop._dbus_access == "read":
809
raise DBusPropertyAccessException(property_name)
810
if prop._dbus_get_args_options["byte_arrays"]:
811
# The byte_arrays option is not supported yet on
812
# signatures other than "ay".
813
if prop._dbus_signature != "ay":
814
raise ValueError
815
value = dbus.ByteArray(''.join(unichr(byte)
816
for byte in value))
817
prop(value)
818
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
820
out_signature="a{sv}")
821
def GetAll(self, interface_name):
822
"""Standard D-Bus property GetAll() method, see D-Bus
823
standard.
824
825
Note: Will not include properties with access="write".
826
"""
827
properties = {}
828
for name, prop in self._get_all_dbus_properties():
829
if (interface_name
830
and interface_name != prop._dbus_interface):
831
# Interface non-empty but did not match
832
continue
833
# Ignore write-only properties
834
if prop._dbus_access == "write":
835
continue
836
value = prop()
837
if not hasattr(value, "variant_level"):
838
properties[name] = value
839
continue
840
properties[name] = type(value)(value, variant_level=
841
value.variant_level+1)
842
return dbus.Dictionary(properties, signature="sv")
843
844
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
845
out_signature="s",
846
path_keyword='object_path',
847
connection_keyword='connection')
848
def Introspect(self, object_path, connection):
849
"""Standard D-Bus method, overloaded to insert property tags.
850
"""
851
xmlstring = dbus.service.Object.Introspect(self, object_path,
852
connection)
853
try:
854
document = xml.dom.minidom.parseString(xmlstring)
855
def make_tag(document, name, prop):
856
e = document.createElement("property")
857
e.setAttribute("name", name)
858
e.setAttribute("type", prop._dbus_signature)
859
e.setAttribute("access", prop._dbus_access)
860
return e
861
for if_tag in document.getElementsByTagName("interface"):
862
for tag in (make_tag(document, name, prop)
863
for name, prop
864
in self._get_all_dbus_properties()
865
if prop._dbus_interface
866
== if_tag.getAttribute("name")):
867
if_tag.appendChild(tag)
868
# Add the names to the return values for the
869
# "org.freedesktop.DBus.Properties" methods
870
if (if_tag.getAttribute("name")
871
== "org.freedesktop.DBus.Properties"):
872
for cn in if_tag.getElementsByTagName("method"):
873
if cn.getAttribute("name") == "Get":
874
for arg in cn.getElementsByTagName("arg"):
875
if (arg.getAttribute("direction")
876
== "out"):
877
arg.setAttribute("name", "value")
878
elif cn.getAttribute("name") == "GetAll":
879
for arg in cn.getElementsByTagName("arg"):
880
if (arg.getAttribute("direction")
881
== "out"):
882
arg.setAttribute("name", "props")
883
xmlstring = document.toxml("utf-8")
884
document.unlink()
885
except (AttributeError, xml.dom.DOMException,
886
xml.parsers.expat.ExpatError) as error:
887
logger.error("Failed to override Introspection method",
888
error)
889
return xmlstring
890
891
892
def datetime_to_dbus (dt, variant_level=0):
893
"""Convert a UTC datetime.datetime() to a D-Bus type."""
894
if dt is None:
895
return dbus.String("", variant_level = variant_level)
896
return dbus.String(dt.isoformat(),
897
variant_level=variant_level)
898
899
900
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
901
.__metaclass__):
902
"""Applied to an empty subclass of a D-Bus object, this metaclass
903
will add additional D-Bus attributes matching a certain pattern.
904
"""
905
def __new__(mcs, name, bases, attr):
906
# Go through all the base classes which could have D-Bus
907
# methods, signals, or properties in them
908
for base in (b for b in bases
909
if issubclass(b, dbus.service.Object)):
910
# Go though all attributes of the base class
911
for attrname, attribute in inspect.getmembers(base):
912
# Ignore non-D-Bus attributes, and D-Bus attributes
913
# with the wrong interface name
914
if (not hasattr(attribute, "_dbus_interface")
915
or not attribute._dbus_interface
916
.startswith("se.recompile.Mandos")):
917
continue
918
# Create an alternate D-Bus interface name based on
919
# the current name
920
alt_interface = (attribute._dbus_interface
921
.replace("se.recompile.Mandos",
922
"se.bsnet.fukt.Mandos"))
923
# Is this a D-Bus signal?
924
if getattr(attribute, "_dbus_is_signal", False):
925
# Extract the original non-method function by
926
# black magic
927
nonmethod_func = (dict(
928
zip(attribute.func_code.co_freevars,
929
attribute.__closure__))["func"]
930
.cell_contents)
931
# Create a new, but exactly alike, function
932
# object, and decorate it to be a new D-Bus signal
933
# with the alternate D-Bus interface name
934
new_function = (dbus.service.signal
935
(alt_interface,
936
attribute._dbus_signature)
937
(types.FunctionType(
938
nonmethod_func.func_code,
939
nonmethod_func.func_globals,
940
nonmethod_func.func_name,
941
nonmethod_func.func_defaults,
942
nonmethod_func.func_closure)))
943
# Define a creator of a function to call both the
944
# old and new functions, so both the old and new
945
# signals gets sent when the function is called
946
def fixscope(func1, func2):
947
"""This function is a scope container to pass
948
func1 and func2 to the "call_both" function
949
outside of its arguments"""
950
def call_both(*args, **kwargs):
951
"""This function will emit two D-Bus
952
signals by calling func1 and func2"""
953
func1(*args, **kwargs)
954
func2(*args, **kwargs)
955
return call_both
956
# Create the "call_both" function and add it to
957
# the class
958
attr[attrname] = fixscope(attribute,
959
new_function)
960
# Is this a D-Bus method?
961
elif getattr(attribute, "_dbus_is_method", False):
962
# Create a new, but exactly alike, function
963
# object. Decorate it to be a new D-Bus method
964
# with the alternate D-Bus interface name. Add it
965
# to the class.
966
attr[attrname] = (dbus.service.method
967
(alt_interface,
968
attribute._dbus_in_signature,
969
attribute._dbus_out_signature)
970
(types.FunctionType
971
(attribute.func_code,
972
attribute.func_globals,
973
attribute.func_name,
974
attribute.func_defaults,
975
attribute.func_closure)))
976
# Is this a D-Bus property?
977
elif getattr(attribute, "_dbus_is_property", False):
978
# Create a new, but exactly alike, function
979
# object, and decorate it to be a new D-Bus
980
# property with the alternate D-Bus interface
981
# name. Add it to the class.
982
attr[attrname] = (dbus_service_property
983
(alt_interface,
984
attribute._dbus_signature,
985
attribute._dbus_access,
986
attribute
987
._dbus_get_args_options
988
["byte_arrays"])
989
(types.FunctionType
990
(attribute.func_code,
991
attribute.func_globals,
992
attribute.func_name,
993
attribute.func_defaults,
994
attribute.func_closure)))
995
return type.__new__(mcs, name, bases, attr)
996
997
998
class ClientDBus(Client, DBusObjectWithProperties):
468
469
def still_valid(self):
470
"""Has the timeout not yet passed for this client?"""
471
if not getattr(self, u"enabled", False):
472
return False
473
now = datetime.datetime.utcnow()
474
if self.last_checked_ok is None:
475
return now < (self.created + self.timeout)
476
else:
477
return now < (self.last_checked_ok + self.timeout)
478
479
480
class ClientDBus(Client, dbus.service.Object):
999
481
"""A Client class using D-Bus
1000
482
1001
483
Attributes:
1002
484
dbus_object_path: dbus.ObjectPath
1003
485
bus: dbus.SystemBus()
1004
486
"""
1005
1006
runtime_expansions = (Client.runtime_expansions
1007
+ ("dbus_object_path",))
1008
1009
487
# dbus.service.Object doesn't use super(), so we can't either.
1010
488
1011
489
def __init__(self, bus = None, *args, **kwargs):
1012
490
self.bus = bus
1013
491
Client.__init__(self, *args, **kwargs)
1014
1015
self._approvals_pending = 0
1016
492
# Only now, when this client is initialized, can it show up on
1017
493
# the D-Bus
1018
client_object_name = unicode(self.name).translate(
1019
{ord("."): ord("_"),
1020
ord("-"): ord("_")})
1021
494
self.dbus_object_path = (dbus.ObjectPath
1022
("/clients/" + client_object_name))
1023
DBusObjectWithProperties.__init__(self, self.bus,
1024
self.dbus_object_path)
1025
1026
def notifychangeproperty(transform_func,
1027
dbus_name, type_func=lambda x: x,
1028
variant_level=1):
1029
""" Modify a variable so that it's a property which announces
1030
its changes to DBus.
1031
1032
transform_fun: Function that takes a value and a variant_level
1033
and transforms it to a D-Bus type.
1034
dbus_name: D-Bus name of the variable
1035
type_func: Function that transform the value before sending it
1036
to the D-Bus. Default: no transform
1037
variant_level: D-Bus variant level. Default: 1
1038
"""
1039
attrname = "_{0}".format(dbus_name)
1040
def setter(self, value):
1041
if hasattr(self, "dbus_object_path"):
1042
if (not hasattr(self, attrname) or
1043
type_func(getattr(self, attrname, None))
1044
!= type_func(value)):
1045
dbus_value = transform_func(type_func(value),
1046
variant_level
1047
=variant_level)
1048
self.PropertyChanged(dbus.String(dbus_name),
1049
dbus_value)
1050
setattr(self, attrname, value)
1051
1052
return property(lambda self: getattr(self, attrname), setter)
1053
1054
1055
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1056
approvals_pending = notifychangeproperty(dbus.Boolean,
1057
"ApprovalPending",
1058
type_func = bool)
1059
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1060
last_enabled = notifychangeproperty(datetime_to_dbus,
1061
"LastEnabled")
1062
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1063
type_func = lambda checker:
1064
checker is not None)
1065
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1066
"LastCheckedOK")
1067
last_approval_request = notifychangeproperty(
1068
datetime_to_dbus, "LastApprovalRequest")
1069
approved_by_default = notifychangeproperty(dbus.Boolean,
1070
"ApprovedByDefault")
1071
approval_delay = notifychangeproperty(dbus.UInt16,
1072
"ApprovalDelay",
1073
type_func =
1074
_timedelta_to_milliseconds)
1075
approval_duration = notifychangeproperty(
1076
dbus.UInt16, "ApprovalDuration",
1077
type_func = _timedelta_to_milliseconds)
1078
host = notifychangeproperty(dbus.String, "Host")
1079
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1080
type_func =
1081
_timedelta_to_milliseconds)
1082
extended_timeout = notifychangeproperty(
1083
dbus.UInt16, "ExtendedTimeout",
1084
type_func = _timedelta_to_milliseconds)
1085
interval = notifychangeproperty(dbus.UInt16,
1086
"Interval",
1087
type_func =
1088
_timedelta_to_milliseconds)
1089
checker_command = notifychangeproperty(dbus.String, "Checker")
1090
1091
del notifychangeproperty
495
(u"/clients/"
496
+ self.name.replace(u".", u"_")))
497
dbus.service.Object.__init__(self, self.bus,
498
self.dbus_object_path)
499
500
@staticmethod
501
def _datetime_to_dbus(dt, variant_level=0):
502
"""Convert a UTC datetime.datetime() to a D-Bus type."""
503
return dbus.String(dt.isoformat(),
504
variant_level=variant_level)
505
506
def enable(self):
507
oldstate = getattr(self, u"enabled", False)
508
r = Client.enable(self)
509
if oldstate != self.enabled:
510
# Emit D-Bus signals
511
self.PropertyChanged(dbus.String(u"enabled"),
512
dbus.Boolean(True, variant_level=1))
513
self.PropertyChanged(
514
dbus.String(u"last_enabled"),
515
self._datetime_to_dbus(self.last_enabled,
516
variant_level=1))
517
return r
518
519
def disable(self, signal = True):
520
oldstate = getattr(self, u"enabled", False)
521
r = Client.disable(self)
522
if signal and oldstate != self.enabled:
523
# Emit D-Bus signal
524
self.PropertyChanged(dbus.String(u"enabled"),
525
dbus.Boolean(False, variant_level=1))
526
return r
1092
527
1093
528
def __del__(self, *args, **kwargs):
1094
529
try:
1095
530
self.remove_from_connection()
1096
531
except LookupError:
1097
532
pass
1098
if hasattr(DBusObjectWithProperties, "__del__"):
1099
DBusObjectWithProperties.__del__(self, *args, **kwargs)
533
if hasattr(dbus.service.Object, u"__del__"):
534
dbus.service.Object.__del__(self, *args, **kwargs)
1100
535
Client.__del__(self, *args, **kwargs)
1101
536
1102
537
def checker_callback(self, pid, condition, command,
1103
538
*args, **kwargs):
1104
539
self.checker_callback_tag = None
1105
540
self.checker = None
541
# Emit D-Bus signal
542
self.PropertyChanged(dbus.String(u"checker_running"),
543
dbus.Boolean(False, variant_level=1))
1106
544
if os.WIFEXITED(condition):
1107
545
exitstatus = os.WEXITSTATUS(condition)
1108
546
# Emit D-Bus signal
1118
556
return Client.checker_callback(self, pid, condition, command,
1119
557
*args, **kwargs)
1120
558
559
def checked_ok(self, *args, **kwargs):
560
r = Client.checked_ok(self, *args, **kwargs)
561
# Emit D-Bus signal
562
self.PropertyChanged(
563
dbus.String(u"last_checked_ok"),
564
(self._datetime_to_dbus(self.last_checked_ok,
565
variant_level=1)))
566
return r
567
1121
568
def start_checker(self, *args, **kwargs):
1122
569
old_checker = self.checker
1123
570
if self.checker is not None:
1130
577
and old_checker_pid != self.checker.pid):
1131
578
# Emit D-Bus signal
1132
579
self.CheckerStarted(self.current_checker_command)
1133
return r
1134
1135
def _reset_approved(self):
1136
self._approved = None
1137
return False
1138
1139
def approve(self, value=True):
1140
self.send_changedstate()
1141
self._approved = value
1142
gobject.timeout_add(_timedelta_to_milliseconds
1143
(self.approval_duration),
1144
self._reset_approved)
1145
1146
1147
## D-Bus methods, signals & properties
1148
_interface = "se.recompile.Mandos.Client"
1149
1150
## Signals
580
self.PropertyChanged(
581
dbus.String(u"checker_running"),
582
dbus.Boolean(True, variant_level=1))
583
return r
584
585
def stop_checker(self, *args, **kwargs):
586
old_checker = getattr(self, u"checker", None)
587
r = Client.stop_checker(self, *args, **kwargs)
588
if (old_checker is not None
589
and getattr(self, u"checker", None) is None):
590
self.PropertyChanged(dbus.String(u"checker_running"),
591
dbus.Boolean(False, variant_level=1))
592
return r
593
594
## D-Bus methods & signals
595
_interface = u"se.bsnet.fukt.Mandos.Client"
596
597
# CheckedOK - method
598
@dbus.service.method(_interface)
599
def CheckedOK(self):
600
return self.checked_ok()
1151
601
1152
602
# CheckerCompleted - signal
1153
@dbus.service.signal(_interface, signature="nxs")
603
@dbus.service.signal(_interface, signature=u"nxs")
1154
604
def CheckerCompleted(self, exitcode, waitstatus, command):
1155
605
"D-Bus signal"
1156
606
pass
1157
607
1158
608
# CheckerStarted - signal
1159
@dbus.service.signal(_interface, signature="s")
609
@dbus.service.signal(_interface, signature=u"s")
1160
610
def CheckerStarted(self, command):
1161
611
"D-Bus signal"
1162
612
pass
1163
613
614
# GetAllProperties - method
615
@dbus.service.method(_interface, out_signature=u"a{sv}")
616
def GetAllProperties(self):
617
"D-Bus method"
618
return dbus.Dictionary({
619
dbus.String(u"name"):
620
dbus.String(self.name, variant_level=1),
621
dbus.String(u"fingerprint"):
622
dbus.String(self.fingerprint, variant_level=1),
623
dbus.String(u"host"):
624
dbus.String(self.host, variant_level=1),
625
dbus.String(u"created"):
626
self._datetime_to_dbus(self.created,
627
variant_level=1),
628
dbus.String(u"last_enabled"):
629
(self._datetime_to_dbus(self.last_enabled,
630
variant_level=1)
631
if self.last_enabled is not None
632
else dbus.Boolean(False, variant_level=1)),
633
dbus.String(u"enabled"):
634
dbus.Boolean(self.enabled, variant_level=1),
635
dbus.String(u"last_checked_ok"):
636
(self._datetime_to_dbus(self.last_checked_ok,
637
variant_level=1)
638
if self.last_checked_ok is not None
639
else dbus.Boolean (False, variant_level=1)),
640
dbus.String(u"timeout"):
641
dbus.UInt64(self.timeout_milliseconds(),
642
variant_level=1),
643
dbus.String(u"interval"):
644
dbus.UInt64(self.interval_milliseconds(),
645
variant_level=1),
646
dbus.String(u"checker"):
647
dbus.String(self.checker_command,
648
variant_level=1),
649
dbus.String(u"checker_running"):
650
dbus.Boolean(self.checker is not None,
651
variant_level=1),
652
dbus.String(u"object_path"):
653
dbus.ObjectPath(self.dbus_object_path,
654
variant_level=1)
655
}, signature=u"sv")
656
657
# IsStillValid - method
658
@dbus.service.method(_interface, out_signature=u"b")
659
def IsStillValid(self):
660
return self.still_valid()
661
1164
662
# PropertyChanged - signal
1165
@dbus.service.signal(_interface, signature="sv")
663
@dbus.service.signal(_interface, signature=u"sv")
1166
664
def PropertyChanged(self, property, value):
1167
665
"D-Bus signal"
1168
666
pass
1169
667
1170
# GotSecret - signal
668
# ReceivedSecret - signal
1171
669
@dbus.service.signal(_interface)
1172
def GotSecret(self):
1173
"""D-Bus signal
1174
Is sent after a successful transfer of secret from the Mandos
1175
server to mandos-client
1176
"""
670
def ReceivedSecret(self):
671
"D-Bus signal"
1177
672
pass
1178
673
1179
674
# Rejected - signal
1180
@dbus.service.signal(_interface, signature="s")
1181
def Rejected(self, reason):
1182
"D-Bus signal"
1183
pass
1184
1185
# NeedApproval - signal
1186
@dbus.service.signal(_interface, signature="tb")
1187
def NeedApproval(self, timeout, default):
1188
"D-Bus signal"
1189
return self.need_approval()
1190
1191
# NeRwequest - signal
1192
@dbus.service.signal(_interface, signature="s")
1193
def NewRequest(self, ip):
1194
"""D-Bus signal
1195
Is sent after a client request a password.
1196
"""
1197
pass
1198
1199
## Methods
1200
1201
# Approve - method
1202
@dbus.service.method(_interface, in_signature="b")
1203
def Approve(self, value):
1204
self.approve(value)
1205
1206
# CheckedOK - method
1207
@dbus.service.method(_interface)
1208
def CheckedOK(self):
1209
self.checked_ok()
675
@dbus.service.signal(_interface)
676
def Rejected(self):
677
"D-Bus signal"
678
pass
679
680
# SetChecker - method
681
@dbus.service.method(_interface, in_signature=u"s")
682
def SetChecker(self, checker):
683
"D-Bus setter method"
684
self.checker_command = checker
685
# Emit D-Bus signal
686
self.PropertyChanged(dbus.String(u"checker"),
687
dbus.String(self.checker_command,
688
variant_level=1))
689
690
# SetHost - method
691
@dbus.service.method(_interface, in_signature=u"s")
692
def SetHost(self, host):
693
"D-Bus setter method"
694
self.host = host
695
# Emit D-Bus signal
696
self.PropertyChanged(dbus.String(u"host"),
697
dbus.String(self.host, variant_level=1))
698
699
# SetInterval - method
700
@dbus.service.method(_interface, in_signature=u"t")
701
def SetInterval(self, milliseconds):
702
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
703
# Emit D-Bus signal
704
self.PropertyChanged(dbus.String(u"interval"),
705
(dbus.UInt64(self.interval_milliseconds(),
706
variant_level=1)))
707
708
# SetSecret - method
709
@dbus.service.method(_interface, in_signature=u"ay",
710
byte_arrays=True)
711
def SetSecret(self, secret):
712
"D-Bus setter method"
713
self.secret = str(secret)
714
715
# SetTimeout - method
716
@dbus.service.method(_interface, in_signature=u"t")
717
def SetTimeout(self, milliseconds):
718
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
719
# Emit D-Bus signal
720
self.PropertyChanged(dbus.String(u"timeout"),
721
(dbus.UInt64(self.timeout_milliseconds(),
722
variant_level=1)))
1210
723
1211
724
# Enable - method
1212
725
@dbus.service.method(_interface)
1231
744
def StopChecker(self):
1232
745
self.stop_checker()
1233
746
1234
## Properties
1235
1236
# ApprovalPending - property
1237
@dbus_service_property(_interface, signature="b", access="read")
1238
def ApprovalPending_dbus_property(self):
1239
return dbus.Boolean(bool(self.approvals_pending))
1240
1241
# ApprovedByDefault - property
1242
@dbus_service_property(_interface, signature="b",
1243
access="readwrite")
1244
def ApprovedByDefault_dbus_property(self, value=None):
1245
if value is None: # get
1246
return dbus.Boolean(self.approved_by_default)
1247
self.approved_by_default = bool(value)
1248
1249
# ApprovalDelay - property
1250
@dbus_service_property(_interface, signature="t",
1251
access="readwrite")
1252
def ApprovalDelay_dbus_property(self, value=None):
1253
if value is None: # get
1254
return dbus.UInt64(self.approval_delay_milliseconds())
1255
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1256
1257
# ApprovalDuration - property
1258
@dbus_service_property(_interface, signature="t",
1259
access="readwrite")
1260
def ApprovalDuration_dbus_property(self, value=None):
1261
if value is None: # get
1262
return dbus.UInt64(_timedelta_to_milliseconds(
1263
self.approval_duration))
1264
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1265
1266
# Name - property
1267
@dbus_service_property(_interface, signature="s", access="read")
1268
def Name_dbus_property(self):
1269
return dbus.String(self.name)
1270
1271
# Fingerprint - property
1272
@dbus_service_property(_interface, signature="s", access="read")
1273
def Fingerprint_dbus_property(self):
1274
return dbus.String(self.fingerprint)
1275
1276
# Host - property
1277
@dbus_service_property(_interface, signature="s",
1278
access="readwrite")
1279
def Host_dbus_property(self, value=None):
1280
if value is None: # get
1281
return dbus.String(self.host)
1282
self.host = value
1283
1284
# Created - property
1285
@dbus_service_property(_interface, signature="s", access="read")
1286
def Created_dbus_property(self):
1287
return datetime_to_dbus(self.created)
1288
1289
# LastEnabled - property
1290
@dbus_service_property(_interface, signature="s", access="read")
1291
def LastEnabled_dbus_property(self):
1292
return datetime_to_dbus(self.last_enabled)
1293
1294
# Enabled - property
1295
@dbus_service_property(_interface, signature="b",
1296
access="readwrite")
1297
def Enabled_dbus_property(self, value=None):
1298
if value is None: # get
1299
return dbus.Boolean(self.enabled)
1300
if value:
1301
self.enable()
1302
else:
1303
self.disable()
1304
1305
# LastCheckedOK - property
1306
@dbus_service_property(_interface, signature="s",
1307
access="readwrite")
1308
def LastCheckedOK_dbus_property(self, value=None):
1309
if value is not None:
1310
self.checked_ok()
1311
return
1312
return datetime_to_dbus(self.last_checked_ok)
1313
1314
# Expires - property
1315
@dbus_service_property(_interface, signature="s", access="read")
1316
def Expires_dbus_property(self):
1317
return datetime_to_dbus(self.expires)
1318
1319
# LastApprovalRequest - property
1320
@dbus_service_property(_interface, signature="s", access="read")
1321
def LastApprovalRequest_dbus_property(self):
1322
return datetime_to_dbus(self.last_approval_request)
1323
1324
# Timeout - property
1325
@dbus_service_property(_interface, signature="t",
1326
access="readwrite")
1327
def Timeout_dbus_property(self, value=None):
1328
if value is None: # get
1329
return dbus.UInt64(self.timeout_milliseconds())
1330
self.timeout = datetime.timedelta(0, 0, 0, value)
1331
if getattr(self, "disable_initiator_tag", None) is None:
1332
return
1333
# Reschedule timeout
1334
gobject.source_remove(self.disable_initiator_tag)
1335
self.disable_initiator_tag = None
1336
self.expires = None
1337
time_to_die = _timedelta_to_milliseconds((self
1338
.last_checked_ok
1339
+ self.timeout)
1340
- datetime.datetime
1341
.utcnow())
1342
if time_to_die <= 0:
1343
# The timeout has passed
1344
self.disable()
1345
else:
1346
self.expires = (datetime.datetime.utcnow()
1347
+ datetime.timedelta(milliseconds =
1348
time_to_die))
1349
self.disable_initiator_tag = (gobject.timeout_add
1350
(time_to_die, self.disable))
1351
1352
# ExtendedTimeout - property
1353
@dbus_service_property(_interface, signature="t",
1354
access="readwrite")
1355
def ExtendedTimeout_dbus_property(self, value=None):
1356
if value is None: # get
1357
return dbus.UInt64(self.extended_timeout_milliseconds())
1358
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1359
1360
# Interval - property
1361
@dbus_service_property(_interface, signature="t",
1362
access="readwrite")
1363
def Interval_dbus_property(self, value=None):
1364
if value is None: # get
1365
return dbus.UInt64(self.interval_milliseconds())
1366
self.interval = datetime.timedelta(0, 0, 0, value)
1367
if getattr(self, "checker_initiator_tag", None) is None:
1368
return
1369
if self.enabled:
1370
# Reschedule checker run
1371
gobject.source_remove(self.checker_initiator_tag)
1372
self.checker_initiator_tag = (gobject.timeout_add
1373
(value, self.start_checker))
1374
self.start_checker() # Start one now, too
1375
1376
# Checker - property
1377
@dbus_service_property(_interface, signature="s",
1378
access="readwrite")
1379
def Checker_dbus_property(self, value=None):
1380
if value is None: # get
1381
return dbus.String(self.checker_command)
1382
self.checker_command = value
1383
1384
# CheckerRunning - property
1385
@dbus_service_property(_interface, signature="b",
1386
access="readwrite")
1387
def CheckerRunning_dbus_property(self, value=None):
1388
if value is None: # get
1389
return dbus.Boolean(self.checker is not None)
1390
if value:
1391
self.start_checker()
1392
else:
1393
self.stop_checker()
1394
1395
# ObjectPath - property
1396
@dbus_service_property(_interface, signature="o", access="read")
1397
def ObjectPath_dbus_property(self):
1398
return self.dbus_object_path # is already a dbus.ObjectPath
1399
1400
# Secret = property
1401
@dbus_service_property(_interface, signature="ay",
1402
access="write", byte_arrays=True)
1403
def Secret_dbus_property(self, value):
1404
self.secret = str(value)
1405
1406
747
del _interface
1407
748
1408
749
1409
class ProxyClient(object):
1410
def __init__(self, child_pipe, fpr, address):
1411
self._pipe = child_pipe
1412
self._pipe.send(('init', fpr, address))
1413
if not self._pipe.recv():
1414
raise KeyError()
1415
1416
def __getattribute__(self, name):
1417
if(name == '_pipe'):
1418
return super(ProxyClient, self).__getattribute__(name)
1419
self._pipe.send(('getattr', name))
1420
data = self._pipe.recv()
1421
if data[0] == 'data':
1422
return data[1]
1423
if data[0] == 'function':
1424
def func(*args, **kwargs):
1425
self._pipe.send(('funcall', name, args, kwargs))
1426
return self._pipe.recv()[1]
1427
return func
1428
1429
def __setattr__(self, name, value):
1430
if(name == '_pipe'):
1431
return super(ProxyClient, self).__setattr__(name, value)
1432
self._pipe.send(('setattr', name, value))
1433
1434
1435
class ClientDBusTransitional(ClientDBus):
1436
__metaclass__ = AlternateDBusNamesMetaclass
1437
1438
1439
750
class ClientHandler(socketserver.BaseRequestHandler, object):
1440
751
"""A class to handle client connections.
1441
752
1443
754
Note: This will run in its own forked process."""
1444
755
1445
756
def handle(self):
1446
with contextlib.closing(self.server.child_pipe) as child_pipe:
1447
logger.info("TCP connection from: %s",
1448
unicode(self.client_address))
1449
logger.debug("Pipe FD: %d",
1450
self.server.child_pipe.fileno())
1451
757
logger.info(u"TCP connection from: %s",
758
unicode(self.client_address))
759
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
760
# Open IPC pipe to parent process
761
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1452
762
session = (gnutls.connection
1453
763
.ClientSession(self.request,
1454
764
gnutls.connection
1455
765
.X509Credentials()))
1456
766
767
line = self.request.makefile().readline()
768
logger.debug(u"Protocol version: %r", line)
769
try:
770
if int(line.strip().split()[0]) > 1:
771
raise RuntimeError
772
except (ValueError, IndexError, RuntimeError), error:
773
logger.error(u"Unknown protocol version: %s", error)
774
return
775
1457
776
# Note: gnutls.connection.X509Credentials is really a
1458
777
# generic GnuTLS certificate credentials object so long as
1459
778
# no X.509 keys are added to it. Therefore, we can use it
1460
779
# here despite using OpenPGP certificates.
1461
780
1462
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1463
# "+AES-256-CBC", "+SHA1",
1464
# "+COMP-NULL", "+CTYPE-OPENPGP",
1465
# "+DHE-DSS"))
781
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
782
# u"+AES-256-CBC", u"+SHA1",
783
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
784
# u"+DHE-DSS"))
1466
785
# Use a fallback default, since this MUST be set.
1467
786
priority = self.server.gnutls_priority
1468
787
if priority is None:
1469
priority = "NORMAL"
788
priority = u"NORMAL"
1470
789
(gnutls.library.functions
1471
790
.gnutls_priority_set_direct(session._c_object,
1472
791
priority, None))
1473
792
1474
# Start communication using the Mandos protocol
1475
# Get protocol number
1476
line = self.request.makefile().readline()
1477
logger.debug("Protocol version: %r", line)
1478
try:
1479
if int(line.strip().split()[0]) > 1:
1480
raise RuntimeError
1481
except (ValueError, IndexError, RuntimeError) as error:
1482
logger.error("Unknown protocol version: %s", error)
1483
return
1484
1485
# Start GnuTLS connection
1486
793
try:
1487
794
session.handshake()
1488
except gnutls.errors.GNUTLSError as error:
1489
logger.warning("Handshake failed: %s", error)
795
except gnutls.errors.GNUTLSError, error:
796
logger.warning(u"Handshake failed: %s", error)
1490
797
# Do not run session.bye() here: the session is not
1491
798
# established. Just abandon the request.
1492
799
return
1493
logger.debug("Handshake succeeded")
1494
1495
approval_required = False
800
logger.debug(u"Handshake succeeded")
1496
801
try:
1497
try:
1498
fpr = self.fingerprint(self.peer_certificate
1499
(session))
1500
except (TypeError,
1501
gnutls.errors.GNUTLSError) as error:
1502
logger.warning("Bad certificate: %s", error)
1503
return
1504
logger.debug("Fingerprint: %s", fpr)
1505
if self.server.use_dbus:
1506
# Emit D-Bus signal
1507
client.NewRequest(str(self.client_address))
1508
1509
try:
1510
client = ProxyClient(child_pipe, fpr,
1511
self.client_address)
1512
except KeyError:
1513
return
1514
1515
if client.approval_delay:
1516
delay = client.approval_delay
1517
client.approvals_pending += 1
1518
approval_required = True
1519
1520
while True:
1521
if not client.enabled:
1522
logger.info("Client %s is disabled",
1523
client.name)
1524
if self.server.use_dbus:
1525
# Emit D-Bus signal
1526
client.Rejected("Disabled")
1527
return
1528
1529
if client._approved or not client.approval_delay:
1530
#We are approved or approval is disabled
1531
break
1532
elif client._approved is None:
1533
logger.info("Client %s needs approval",
1534
client.name)
1535
if self.server.use_dbus:
1536
# Emit D-Bus signal
1537
client.NeedApproval(
1538
client.approval_delay_milliseconds(),
1539
client.approved_by_default)
1540
else:
1541
logger.warning("Client %s was not approved",
1542
client.name)
1543
if self.server.use_dbus:
1544
# Emit D-Bus signal
1545
client.Rejected("Denied")
1546
return
1547
1548
#wait until timeout or approved
1549
time = datetime.datetime.now()
1550
client.changedstate.acquire()
1551
(client.changedstate.wait
1552
(float(client._timedelta_to_milliseconds(delay)
1553
/ 1000)))
1554
client.changedstate.release()
1555
time2 = datetime.datetime.now()
1556
if (time2 - time) >= delay:
1557
if not client.approved_by_default:
1558
logger.warning("Client %s timed out while"
1559
" waiting for approval",
1560
client.name)
1561
if self.server.use_dbus:
1562
# Emit D-Bus signal
1563
client.Rejected("Approval timed out")
1564
return
1565
else:
1566
break
1567
else:
1568
delay -= time2 - time
1569
1570
sent_size = 0
1571
while sent_size < len(client.secret):
1572
try:
1573
sent = session.send(client.secret[sent_size:])
1574
except gnutls.errors.GNUTLSError as error:
1575
logger.warning("gnutls send failed")
1576
return
1577
logger.debug("Sent: %d, remaining: %d",
1578
sent, len(client.secret)
1579
- (sent_size + sent))
1580
sent_size += sent
1581
1582
logger.info("Sending secret to %s", client.name)
1583
# bump the timeout using extended_timeout
1584
client.checked_ok(client.extended_timeout)
1585
if self.server.use_dbus:
1586
# Emit D-Bus signal
1587
client.GotSecret()
802
fpr = self.fingerprint(self.peer_certificate(session))
803
except (TypeError, gnutls.errors.GNUTLSError), error:
804
logger.warning(u"Bad certificate: %s", error)
805
session.bye()
806
return
807
logger.debug(u"Fingerprint: %s", fpr)
1588
808
1589
finally:
1590
if approval_required:
1591
client.approvals_pending -= 1
1592
try:
1593
session.bye()
1594
except gnutls.errors.GNUTLSError as error:
1595
logger.warning("GnuTLS bye failed")
809
for c in self.server.clients:
810
if c.fingerprint == fpr:
811
client = c
812
break
813
else:
814
ipc.write(u"NOTFOUND %s\n" % fpr)
815
session.bye()
816
return
817
# Have to check if client.still_valid(), since it is
818
# possible that the client timed out while establishing
819
# the GnuTLS session.
820
if not client.still_valid():
821
ipc.write(u"INVALID %s\n" % client.name)
822
session.bye()
823
return
824
ipc.write(u"SENDING %s\n" % client.name)
825
sent_size = 0
826
while sent_size < len(client.secret):
827
sent = session.send(client.secret[sent_size:])
828
logger.debug(u"Sent: %d, remaining: %d",
829
sent, len(client.secret)
830
- (sent_size + sent))
831
sent_size += sent
832
session.bye()
1596
833
1597
834
@staticmethod
1598
835
def peer_certificate(session):
1608
845
.gnutls_certificate_get_peers
1609
846
(session._c_object, ctypes.byref(list_size)))
1610
847
if not bool(cert_list) and list_size.value != 0:
1611
raise gnutls.errors.GNUTLSError("error getting peer"
1612
" certificate")
848
raise gnutls.errors.GNUTLSError(u"error getting peer"
849
u" certificate")
1613
850
if list_size.value == 0:
1614
851
return None
1615
852
cert = cert_list[0]
1641
878
if crtverify.value != 0:
1642
879
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1643
880
raise (gnutls.errors.CertificateSecurityError
1644
("Verify failed"))
881
(u"Verify failed"))
1645
882
# New buffer for the fingerprint
1646
883
buf = ctypes.create_string_buffer(20)
1647
884
buf_len = ctypes.c_size_t()
1654
891
# Convert the buffer to a Python bytestring
1655
892
fpr = ctypes.string_at(buf, buf_len.value)
1656
893
# Convert the bytestring to hexadecimal notation
1657
hex_fpr = binascii.hexlify(fpr).upper()
894
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1658
895
return hex_fpr
1659
896
1660
897
1661
class MultiprocessingMixIn(object):
1662
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1663
def sub_process_main(self, request, address):
1664
try:
1665
self.finish_request(request, address)
1666
except:
1667
self.handle_error(request, address)
1668
self.close_request(request)
1669
1670
def process_request(self, request, address):
1671
"""Start a new process to process the request."""
1672
proc = multiprocessing.Process(target = self.sub_process_main,
1673
args = (request,
1674
address))
1675
proc.start()
1676
return proc
1677
1678
1679
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1680
""" adds a pipe to the MixIn """
898
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
899
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1681
900
def process_request(self, request, client_address):
1682
901
"""Overrides and wraps the original process_request().
1683
902
1684
This function creates a new pipe in self.pipe
903
This function creates a new pipe in self.pipe
1685
904
"""
1686
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1687
1688
proc = MultiprocessingMixIn.process_request(self, request,
1689
client_address)
1690
self.child_pipe.close()
1691
self.add_pipe(parent_pipe, proc)
1692
1693
def add_pipe(self, parent_pipe, proc):
905
self.pipe = os.pipe()
906
super(ForkingMixInWithPipe,
907
self).process_request(request, client_address)
908
os.close(self.pipe[1]) # close write end
909
self.add_pipe(self.pipe[0])
910
def add_pipe(self, pipe):
1694
911
"""Dummy function; override as necessary"""
1695
raise NotImplementedError
1696
1697
1698
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
912
os.close(pipe)
913
914
915
class IPv6_TCPServer(ForkingMixInWithPipe,
1699
916
socketserver.TCPServer, object):
1700
917
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1701
918
1717
934
bind to an address or port if they were not specified."""
1718
935
if self.interface is not None:
1719
936
if SO_BINDTODEVICE is None:
1720
logger.error("SO_BINDTODEVICE does not exist;"
1721
" cannot bind to interface %s",
937
logger.error(u"SO_BINDTODEVICE does not exist;"
938
u" cannot bind to interface %s",
1722
939
self.interface)
1723
940
else:
1724
941
try:
1725
942
self.socket.setsockopt(socket.SOL_SOCKET,
1726
943
SO_BINDTODEVICE,
1727
944
str(self.interface
1728
+ '\0'))
1729
except socket.error as error:
945
+ u'\0'))
946
except socket.error, error:
1730
947
if error[0] == errno.EPERM:
1731
logger.error("No permission to"
1732
" bind to interface %s",
948
logger.error(u"No permission to"
949
u" bind to interface %s",
1733
950
self.interface)
1734
951
elif error[0] == errno.ENOPROTOOPT:
1735
logger.error("SO_BINDTODEVICE not available;"
1736
" cannot bind to interface %s",
952
logger.error(u"SO_BINDTODEVICE not available;"
953
u" cannot bind to interface %s",
1737
954
self.interface)
1738
955
else:
1739
956
raise
1741
958
if self.server_address[0] or self.server_address[1]:
1742
959
if not self.server_address[0]:
1743
960
if self.address_family == socket.AF_INET6:
1744
any_address = "::" # in6addr_any
961
any_address = u"::" # in6addr_any
1745
962
else:
1746
963
any_address = socket.INADDR_ANY
1747
964
self.server_address = (any_address,
1765
982
clients: set of Client objects
1766
983
gnutls_priority GnuTLS priority string
1767
984
use_dbus: Boolean; to emit D-Bus signals or not
985
clients: set of Client objects
986
gnutls_priority GnuTLS priority string
987
use_dbus: Boolean; to emit D-Bus signals or not
1768
988
1769
989
Assumes a gobject.MainLoop event loop.
1770
990
"""
1774
994
self.enabled = False
1775
995
self.clients = clients
1776
996
if self.clients is None:
1777
self.clients = {}
997
self.clients = set()
1778
998
self.use_dbus = use_dbus
1779
999
self.gnutls_priority = gnutls_priority
1780
1000
IPv6_TCPServer.__init__(self, server_address,
1784
1004
def server_activate(self):
1785
1005
if self.enabled:
1786
1006
return socketserver.TCPServer.server_activate(self)
1787
1788
1007
def enable(self):
1789
1008
self.enabled = True
1790
1791
def add_pipe(self, parent_pipe, proc):
1009
def add_pipe(self, pipe):
1792
1010
# Call "handle_ipc" for both data and EOF events
1793
gobject.io_add_watch(parent_pipe.fileno(),
1794
gobject.IO_IN | gobject.IO_HUP,
1795
functools.partial(self.handle_ipc,
1796
parent_pipe =
1797
parent_pipe,
1798
proc = proc))
1799
1800
def handle_ipc(self, source, condition, parent_pipe=None,
1801
proc = None, client_object=None):
1011
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1012
self.handle_ipc)
1013
def handle_ipc(self, source, condition, file_objects={}):
1802
1014
condition_names = {
1803
gobject.IO_IN: "IN", # There is data to read.
1804
gobject.IO_OUT: "OUT", # Data can be written (without
1015
gobject.IO_IN: u"IN", # There is data to read.
1016
gobject.IO_OUT: u"OUT", # Data can be written (without
1805
1017
# blocking).
1806
gobject.IO_PRI: "PRI", # There is urgent data to read.
1807
gobject.IO_ERR: "ERR", # Error condition.
1808
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1018
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1019
gobject.IO_ERR: u"ERR", # Error condition.
1020
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1809
1021
# broken, usually for pipes and
1810
1022
# sockets).
1811
1023
}
1813
1025
for cond, name in
1814
1026
condition_names.iteritems()
1815
1027
if cond & condition)
1816
# error, or the other end of multiprocessing.Pipe has closed
1817
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1818
# Wait for other process to exit
1819
proc.join()
1820
return False
1821
1822
# Read a request from the child
1823
request = parent_pipe.recv()
1824
command = request[0]
1825
1826
if command == 'init':
1827
fpr = request[1]
1828
address = request[2]
1829
1830
for c in self.clients.itervalues():
1831
if c.fingerprint == fpr:
1832
client = c
1833
break
1834
else:
1835
logger.info("Client not found for fingerprint: %s, ad"
1836
"dress: %s", fpr, address)
1837
if self.use_dbus:
1838
# Emit D-Bus signal
1839
mandos_dbus_service.ClientNotFound(fpr,
1840
address[0])
1841
parent_pipe.send(False)
1842
return False
1843
1844
gobject.io_add_watch(parent_pipe.fileno(),
1845
gobject.IO_IN | gobject.IO_HUP,
1846
functools.partial(self.handle_ipc,
1847
parent_pipe =
1848
parent_pipe,
1849
proc = proc,
1850
client_object =
1851
client))
1852
parent_pipe.send(True)
1853
# remove the old hook in favor of the new above hook on
1854
# same fileno
1855
return False
1856
if command == 'funcall':
1857
funcname = request[1]
1858
args = request[2]
1859
kwargs = request[3]
1860
1861
parent_pipe.send(('data', getattr(client_object,
1862
funcname)(*args,
1863
**kwargs)))
1864
1865
if command == 'getattr':
1866
attrname = request[1]
1867
if callable(client_object.__getattribute__(attrname)):
1868
parent_pipe.send(('function',))
1869
else:
1870
parent_pipe.send(('data', client_object
1871
.__getattribute__(attrname)))
1872
1873
if command == 'setattr':
1874
attrname = request[1]
1875
value = request[2]
1876
setattr(client_object, attrname, value)
1877
1028
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1029
conditions_string)
1030
1031
# Turn the pipe file descriptor into a Python file object
1032
if source not in file_objects:
1033
file_objects[source] = os.fdopen(source, u"r", 1)
1034
1035
# Read a line from the file object
1036
cmdline = file_objects[source].readline()
1037
if not cmdline: # Empty line means end of file
1038
# close the IPC pipe
1039
file_objects[source].close()
1040
del file_objects[source]
1041
1042
# Stop calling this function
1043
return False
1044
1045
logger.debug(u"IPC command: %r", cmdline)
1046
1047
# Parse and act on command
1048
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1049
1050
if cmd == u"NOTFOUND":
1051
logger.warning(u"Client not found for fingerprint: %s",
1052
args)
1053
if self.use_dbus:
1054
# Emit D-Bus signal
1055
mandos_dbus_service.ClientNotFound(args)
1056
elif cmd == u"INVALID":
1057
for client in self.clients:
1058
if client.name == args:
1059
logger.warning(u"Client %s is invalid", args)
1060
if self.use_dbus:
1061
# Emit D-Bus signal
1062
client.Rejected()
1063
break
1064
else:
1065
logger.error(u"Unknown client %s is invalid", args)
1066
elif cmd == u"SENDING":
1067
for client in self.clients:
1068
if client.name == args:
1069
logger.info(u"Sending secret to %s", client.name)
1070
client.checked_ok()
1071
if self.use_dbus:
1072
# Emit D-Bus signal
1073
client.ReceivedSecret()
1074
break
1075
else:
1076
logger.error(u"Sending secret to unknown client %s",
1077
args)
1078
else:
1079
logger.error(u"Unknown IPC command: %r", cmdline)
1080
1081
# Keep calling this function
1878
1082
return True
1879
1083
1880
1084
1881
1085
def string_to_delta(interval):
1882
1086
"""Parse a string and return a datetime.timedelta
1883
1087
1884
>>> string_to_delta('7d')
1088
>>> string_to_delta(u'7d')
1885
1089
datetime.timedelta(7)
1886
>>> string_to_delta('60s')
1090
>>> string_to_delta(u'60s')
1887
1091
datetime.timedelta(0, 60)
1888
>>> string_to_delta('60m')
1092
>>> string_to_delta(u'60m')
1889
1093
datetime.timedelta(0, 3600)
1890
>>> string_to_delta('24h')
1094
>>> string_to_delta(u'24h')
1891
1095
datetime.timedelta(1)
1892
>>> string_to_delta('1w')
1096
>>> string_to_delta(u'1w')
1893
1097
datetime.timedelta(7)
1894
>>> string_to_delta('5m 30s')
1098
>>> string_to_delta(u'5m 30s')
1895
1099
datetime.timedelta(0, 330)
1896
1100
"""
1897
1101
timevalue = datetime.timedelta(0)
1899
1103
try:
1900
1104
suffix = unicode(s[-1])
1901
1105
value = int(s[:-1])
1902
if suffix == "d":
1106
if suffix == u"d":
1903
1107
delta = datetime.timedelta(value)
1904
elif suffix == "s":
1108
elif suffix == u"s":
1905
1109
delta = datetime.timedelta(0, value)
1906
elif suffix == "m":
1110
elif suffix == u"m":
1907
1111
delta = datetime.timedelta(0, 0, 0, 0, value)
1908
elif suffix == "h":
1112
elif suffix == u"h":
1909
1113
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1910
elif suffix == "w":
1114
elif suffix == u"w":
1911
1115
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1912
1116
else:
1913
raise ValueError("Unknown suffix %r" % suffix)
1914
except (ValueError, IndexError) as e:
1915
raise ValueError(*(e.args))
1117
raise ValueError
1118
except (ValueError, IndexError):
1119
raise ValueError
1916
1120
timevalue += delta
1917
1121
return timevalue
1918
1122
1919
1123
1124
def if_nametoindex(interface):
1125
"""Call the C function if_nametoindex(), or equivalent
1126
1127
Note: This function cannot accept a unicode string."""
1128
global if_nametoindex
1129
try:
1130
if_nametoindex = (ctypes.cdll.LoadLibrary
1131
(ctypes.util.find_library(u"c"))
1132
.if_nametoindex)
1133
except (OSError, AttributeError):
1134
logger.warning(u"Doing if_nametoindex the hard way")
1135
def if_nametoindex(interface):
1136
"Get an interface index the hard way, i.e. using fcntl()"
1137
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1138
with closing(socket.socket()) as s:
1139
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1140
struct.pack(str(u"16s16x"),
1141
interface))
1142
interface_index = struct.unpack(str(u"I"),
1143
ifreq[16:20])[0]
1144
return interface_index
1145
return if_nametoindex(interface)
1146
1147
1920
1148
def daemon(nochdir = False, noclose = False):
1921
1149
"""See daemon(3). Standard BSD Unix function.
1922
1150
1925
1153
sys.exit()
1926
1154
os.setsid()
1927
1155
if not nochdir:
1928
os.chdir("/")
1156
os.chdir(u"/")
1929
1157
if os.fork():
1930
1158
sys.exit()
1931
1159
if not noclose:
1933
1161
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1934
1162
if not stat.S_ISCHR(os.fstat(null).st_mode):
1935
1163
raise OSError(errno.ENODEV,
1936
"%s not a character device"
1937
% os.path.devnull)
1164
u"/dev/null not a character device")
1938
1165
os.dup2(null, sys.stdin.fileno())
1939
1166
os.dup2(null, sys.stdout.fileno())
1940
1167
os.dup2(null, sys.stderr.fileno())
1944
1171
1945
1172
def main():
1946
1173
1947
##################################################################
1174
######################################################################
1948
1175
# Parsing of options, both command line and config file
1949
1176
1950
parser = argparse.ArgumentParser()
1951
parser.add_argument("-v", "--version", action="version",
1952
version = "%%(prog)s %s" % version,
1953
help="show version number and exit")
1954
parser.add_argument("-i", "--interface", metavar="IF",
1955
help="Bind to interface IF")
1956
parser.add_argument("-a", "--address",
1957
help="Address to listen for requests on")
1958
parser.add_argument("-p", "--port", type=int,
1959
help="Port number to receive requests on")
1960
parser.add_argument("--check", action="store_true",
1961
help="Run self-test")
1962
parser.add_argument("--debug", action="store_true",
1963
help="Debug mode; run in foreground and log"
1964
" to terminal")
1965
parser.add_argument("--debuglevel", metavar="LEVEL",
1966
help="Debug level for stdout output")
1967
parser.add_argument("--priority", help="GnuTLS"
1968
" priority string (see GnuTLS documentation)")
1969
parser.add_argument("--servicename",
1970
metavar="NAME", help="Zeroconf service name")
1971
parser.add_argument("--configdir",
1972
default="/etc/mandos", metavar="DIR",
1973
help="Directory to search for configuration"
1974
" files")
1975
parser.add_argument("--no-dbus", action="store_false",
1976
dest="use_dbus", help="Do not provide D-Bus"
1977
" system bus interface")
1978
parser.add_argument("--no-ipv6", action="store_false",
1979
dest="use_ipv6", help="Do not use IPv6")
1980
parser.add_argument("--no-restore", action="store_false",
1981
dest="restore", help="Do not restore stored"
1982
" state")
1983
parser.add_argument("--statedir", metavar="DIR",
1984
help="Directory to save/restore state in")
1985
1986
options = parser.parse_args()
1177
parser = optparse.OptionParser(version = "%%prog %s" % version)
1178
parser.add_option("-i", u"--interface", type=u"string",
1179
metavar="IF", help=u"Bind to interface IF")
1180
parser.add_option("-a", u"--address", type=u"string",
1181
help=u"Address to listen for requests on")
1182
parser.add_option("-p", u"--port", type=u"int",
1183
help=u"Port number to receive requests on")
1184
parser.add_option("--check", action=u"store_true",
1185
help=u"Run self-test")
1186
parser.add_option("--debug", action=u"store_true",
1187
help=u"Debug mode; run in foreground and log to"
1188
u" terminal")
1189
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1190
u" priority string (see GnuTLS documentation)")
1191
parser.add_option("--servicename", type=u"string",
1192
metavar=u"NAME", help=u"Zeroconf service name")
1193
parser.add_option("--configdir", type=u"string",
1194
default=u"/etc/mandos", metavar=u"DIR",
1195
help=u"Directory to search for configuration"
1196
u" files")
1197
parser.add_option("--no-dbus", action=u"store_false",
1198
dest=u"use_dbus", help=u"Do not provide D-Bus"
1199
u" system bus interface")
1200
parser.add_option("--no-ipv6", action=u"store_false",
1201
dest=u"use_ipv6", help=u"Do not use IPv6")
1202
options = parser.parse_args()[0]
1987
1203
1988
1204
if options.check:
1989
1205
import doctest
1991
1207
sys.exit()
1992
1208
1993
1209
# Default values for config file for server-global settings
1994
server_defaults = { "interface": "",
1995
"address": "",
1996
"port": "",
1997
"debug": "False",
1998
"priority":
1999
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2000
"servicename": "Mandos",
2001
"use_dbus": "True",
2002
"use_ipv6": "True",
2003
"debuglevel": "",
2004
"restore": "True",
2005
"statedir": "/var/lib/mandos"
1210
server_defaults = { u"interface": u"",
1211
u"address": u"",
1212
u"port": u"",
1213
u"debug": u"False",
1214
u"priority":
1215
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1216
u"servicename": u"Mandos",
1217
u"use_dbus": u"True",
1218
u"use_ipv6": u"True",
2006
1219
}
2007
1220
2008
1221
# Parse config file for server-global settings
2009
1222
server_config = configparser.SafeConfigParser(server_defaults)
2010
1223
del server_defaults
2011
1224
server_config.read(os.path.join(options.configdir,
2012
"mandos.conf"))
1225
u"mandos.conf"))
2013
1226
# Convert the SafeConfigParser object to a dict
2014
1227
server_settings = server_config.defaults()
2015
1228
# Use the appropriate methods on the non-string config options
2016
for option in ("debug", "use_dbus", "use_ipv6"):
2017
server_settings[option] = server_config.getboolean("DEFAULT",
1229
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1230
server_settings[option] = server_config.getboolean(u"DEFAULT",
2018
1231
option)
2019
1232
if server_settings["port"]:
2020
server_settings["port"] = server_config.getint("DEFAULT",
2021
"port")
1233
server_settings["port"] = server_config.getint(u"DEFAULT",
1234
u"port")
2022
1235
del server_config
2023
1236
2024
1237
# Override the settings from the config file with command line
2025
1238
# options, if set.
2026
for option in ("interface", "address", "port", "debug",
2027
"priority", "servicename", "configdir",
2028
"use_dbus", "use_ipv6", "debuglevel", "restore",
2029
"statedir"):
1239
for option in (u"interface", u"address", u"port", u"debug",
1240
u"priority", u"servicename", u"configdir",
1241
u"use_dbus", u"use_ipv6"):
2030
1242
value = getattr(options, option)
2031
1243
if value is not None:
2032
1244
server_settings[option] = value
2040
1252
##################################################################
2041
1253
2042
1254
# For convenience
2043
debug = server_settings["debug"]
2044
debuglevel = server_settings["debuglevel"]
2045
use_dbus = server_settings["use_dbus"]
2046
use_ipv6 = server_settings["use_ipv6"]
2047
stored_state_path = os.path.join(server_settings["statedir"],
2048
stored_state_file)
2049
2050
if debug:
2051
initlogger(logging.DEBUG)
2052
else:
2053
if not debuglevel:
2054
initlogger()
2055
else:
2056
level = getattr(logging, debuglevel.upper())
2057
initlogger(level)
2058
2059
if server_settings["servicename"] != "Mandos":
1255
debug = server_settings[u"debug"]
1256
use_dbus = server_settings[u"use_dbus"]
1257
use_ipv6 = server_settings[u"use_ipv6"]
1258
1259
if not debug:
1260
syslogger.setLevel(logging.WARNING)
1261
console.setLevel(logging.WARNING)
1262
1263
if server_settings[u"servicename"] != u"Mandos":
2060
1264
syslogger.setFormatter(logging.Formatter
2061
('Mandos (%s) [%%(process)d]:'
2062
' %%(levelname)s: %%(message)s'
2063
% server_settings["servicename"]))
1265
(u'Mandos (%s) [%%(process)d]:'
1266
u' %%(levelname)s: %%(message)s'
1267
% server_settings[u"servicename"]))
2064
1268
2065
1269
# Parse config file with clients
2066
client_defaults = { "timeout": "5m",
2067
"extended_timeout": "15m",
2068
"interval": "2m",
2069
"checker": "fping -q -- %%(host)s",
2070
"host": "",
2071
"approval_delay": "0s",
2072
"approval_duration": "1s",
1270
client_defaults = { u"timeout": u"1h",
1271
u"interval": u"5m",
1272
u"checker": u"fping -q -- %%(host)s",
1273
u"host": u"",
2073
1274
}
2074
1275
client_config = configparser.SafeConfigParser(client_defaults)
2075
client_config.read(os.path.join(server_settings["configdir"],
2076
"clients.conf"))
1276
client_config.read(os.path.join(server_settings[u"configdir"],
1277
u"clients.conf"))
2077
1278
2078
1279
global mandos_dbus_service
2079
1280
mandos_dbus_service = None
2080
1281
2081
tcp_server = MandosServer((server_settings["address"],
2082
server_settings["port"]),
1282
tcp_server = MandosServer((server_settings[u"address"],
1283
server_settings[u"port"]),
2083
1284
ClientHandler,
2084
interface=(server_settings["interface"]
2085
or None),
1285
interface=server_settings[u"interface"],
2086
1286
use_ipv6=use_ipv6,
2087
1287
gnutls_priority=
2088
server_settings["priority"],
1288
server_settings[u"priority"],
2089
1289
use_dbus=use_dbus)
2090
if not debug:
2091
pidfilename = "/var/run/mandos.pid"
2092
try:
2093
pidfile = open(pidfilename, "w")
2094
except IOError:
2095
logger.error("Could not open file %r", pidfilename)
1290
pidfilename = u"/var/run/mandos.pid"
1291
try:
1292
pidfile = open(pidfilename, u"w")
1293
except IOError:
1294
logger.error(u"Could not open file %r", pidfilename)
2096
1295
2097
1296
try:
2098
uid = pwd.getpwnam("_mandos").pw_uid
2099
gid = pwd.getpwnam("_mandos").pw_gid
1297
uid = pwd.getpwnam(u"_mandos").pw_uid
1298
gid = pwd.getpwnam(u"_mandos").pw_gid
2100
1299
except KeyError:
2101
1300
try:
2102
uid = pwd.getpwnam("mandos").pw_uid
2103
gid = pwd.getpwnam("mandos").pw_gid
1301
uid = pwd.getpwnam(u"mandos").pw_uid
1302
gid = pwd.getpwnam(u"mandos").pw_gid
2104
1303
except KeyError:
2105
1304
try:
2106
uid = pwd.getpwnam("nobody").pw_uid
2107
gid = pwd.getpwnam("nobody").pw_gid
1305
uid = pwd.getpwnam(u"nobody").pw_uid
1306
gid = pwd.getpwnam(u"nobody").pw_gid
2108
1307
except KeyError:
2109
1308
uid = 65534
2110
1309
gid = 65534
2111
1310
try:
2112
1311
os.setgid(gid)
2113
1312
os.setuid(uid)
2114
except OSError as error:
1313
except OSError, error:
2115
1314
if error[0] != errno.EPERM:
2116
1315
raise error
2117
1316
1317
# Enable all possible GnuTLS debugging
2118
1318
if debug:
2119
# Enable all possible GnuTLS debugging
2120
2121
1319
# "Use a log level over 10 to enable all debugging options."
2122
1320
# - GnuTLS manual
2123
1321
gnutls.library.functions.gnutls_global_set_log_level(11)
2124
1322
2125
1323
@gnutls.library.types.gnutls_log_func
2126
1324
def debug_gnutls(level, string):
2127
logger.debug("GnuTLS: %s", string[:-1])
1325
logger.debug(u"GnuTLS: %s", string[:-1])
2128
1326
2129
1327
(gnutls.library.functions
2130
1328
.gnutls_global_set_log_function(debug_gnutls))
2131
2132
# Redirect stdin so all checkers get /dev/null
2133
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2134
os.dup2(null, sys.stdin.fileno())
2135
if null > 2:
2136
os.close(null)
2137
else:
2138
# No console logging
2139
logger.removeHandler(console)
2140
2141
# Need to fork before connecting to D-Bus
2142
if not debug:
2143
# Close all input and output, do double fork, etc.
2144
daemon()
2145
1329
2146
1330
global main_loop
2147
1331
# From the Avahi example code
2150
1334
bus = dbus.SystemBus()
2151
1335
# End of Avahi example code
2152
1336
if use_dbus:
2153
try:
2154
bus_name = dbus.service.BusName("se.recompile.Mandos",
2155
bus, do_not_queue=True)
2156
old_bus_name = (dbus.service.BusName
2157
("se.bsnet.fukt.Mandos", bus,
2158
do_not_queue=True))
2159
except dbus.exceptions.NameExistsException as e:
2160
logger.error(unicode(e) + ", disabling D-Bus")
2161
use_dbus = False
2162
server_settings["use_dbus"] = False
2163
tcp_server.use_dbus = False
1337
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2164
1338
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2165
service = AvahiServiceToSyslog(name =
2166
server_settings["servicename"],
2167
servicetype = "_mandos._tcp",
2168
protocol = protocol, bus = bus)
1339
service = AvahiService(name = server_settings[u"servicename"],
1340
servicetype = u"_mandos._tcp",
1341
protocol = protocol, bus = bus)
2169
1342
if server_settings["interface"]:
2170
1343
service.interface = (if_nametoindex
2171
(str(server_settings["interface"])))
2172
2173
global multiprocessing_manager
2174
multiprocessing_manager = multiprocessing.Manager()
1344
(str(server_settings[u"interface"])))
2175
1345
2176
1346
client_class = Client
2177
1347
if use_dbus:
2178
client_class = functools.partial(ClientDBusTransitional,
2179
bus = bus)
2180
2181
special_settings = {
2182
# Some settings need to be accessd by special methods;
2183
# booleans need .getboolean(), etc. Here is a list of them:
2184
"approved_by_default":
2185
lambda section:
2186
client_config.getboolean(section, "approved_by_default"),
2187
"enabled":
2188
lambda section:
2189
client_config.getboolean(section, "enabled"),
2190
}
2191
# Construct a new dict of client settings of this form:
2192
# { client_name: {setting_name: value, ...}, ...}
2193
# with exceptions for any special settings as defined above
2194
client_settings = dict((clientname,
2195
dict((setting,
2196
(value
2197
if setting not in special_settings
2198
else special_settings[setting]
2199
(clientname)))
2200
for setting, value in
2201
client_config.items(clientname)))
2202
for clientname in client_config.sections())
2203
2204
old_client_settings = {}
2205
clients_data = []
2206
2207
# Get client data and settings from last running state.
2208
if server_settings["restore"]:
2209
try:
2210
with open(stored_state_path, "rb") as stored_state:
2211
clients_data, old_client_settings = (pickle.load
2212
(stored_state))
2213
os.remove(stored_state_path)
2214
except IOError as e:
2215
logger.warning("Could not load persistent state: {0}"
2216
.format(e))
2217
if e.errno != errno.ENOENT:
2218
raise
2219
2220
with Crypto() as crypt:
2221
for client in clients_data:
2222
client_name = client["name"]
2223
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
setattr(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 sucessful. Clients
2243
# whose checker failed before we stored its state is
2244
# assumed to have failed all checkers during downtime.
2245
if client["enabled"] and client["last_checked_ok"]:
2246
if ((datetime.datetime.utcnow()
2247
- client["last_checked_ok"])
2248
> client["interval"]):
2249
if client["last_checker_status"] != 0:
2250
client["enabled"] = False
2251
else:
2252
client["expires"] = (datetime.datetime
2253
.utcnow()
2254
+ client["timeout"])
2255
2256
client["changedstate"] = (multiprocessing_manager
2257
.Condition
2258
(multiprocessing_manager
2259
.Lock()))
2260
if use_dbus:
2261
new_client = (ClientDBusTransitional.__new__
2262
(ClientDBusTransitional))
2263
tcp_server.clients[client_name] = new_client
2264
new_client.bus = bus
2265
for name, value in client.iteritems():
2266
setattr(new_client, name, value)
2267
client_object_name = unicode(client_name).translate(
2268
{ord("."): ord("_"),
2269
ord("-"): ord("_")})
2270
new_client.dbus_object_path = (dbus.ObjectPath
2271
("/clients/"
2272
+ client_object_name))
2273
DBusObjectWithProperties.__init__(new_client,
2274
new_client.bus,
2275
new_client
2276
.dbus_object_path)
2277
else:
2278
tcp_server.clients[client_name] = (Client.__new__
2279
(Client))
2280
for name, value in client.iteritems():
2281
setattr(tcp_server.clients[client_name],
2282
name, value)
2283
2284
try:
2285
tcp_server.clients[client_name].secret = (
2286
crypt.decrypt(tcp_server.clients[client_name]
2287
.encrypted_secret,
2288
client_settings[client_name]
2289
["secret"]))
2290
except CryptoError:
2291
# If decryption fails, we use secret from new settings
2292
tcp_server.clients[client_name].secret = (
2293
client_settings[client_name]["secret"])
2294
2295
# Create/remove clients based on new changes made to config
2296
for clientname in set(old_client_settings) - set(client_settings):
2297
del tcp_server.clients[clientname]
2298
for clientname in set(client_settings) - set(old_client_settings):
2299
tcp_server.clients[clientname] = (client_class(name
2300
= clientname,
2301
config =
2302
client_settings
2303
[clientname]))
2304
1348
client_class = functools.partial(ClientDBus, bus = bus)
1349
tcp_server.clients.update(set(
1350
client_class(name = section,
1351
config= dict(client_config.items(section)))
1352
for section in client_config.sections()))
2305
1353
if not tcp_server.clients:
2306
logger.warning("No clients defined")
1354
logger.warning(u"No clients defined")
1355
1356
if debug:
1357
# Redirect stdin so all checkers get /dev/null
1358
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1359
os.dup2(null, sys.stdin.fileno())
1360
if null > 2:
1361
os.close(null)
1362
else:
1363
# No console logging
1364
logger.removeHandler(console)
1365
# Close all input and output, do double fork, etc.
1366
daemon()
1367
1368
try:
1369
with closing(pidfile):
1370
pid = os.getpid()
1371
pidfile.write(str(pid) + "\n")
1372
del pidfile
1373
except IOError:
1374
logger.error(u"Could not write to file %r with PID %d",
1375
pidfilename, pid)
1376
except NameError:
1377
# "pidfile" was never created
1378
pass
1379
del pidfilename
1380
1381
def cleanup():
1382
"Cleanup function; run on exit"
1383
service.cleanup()
2307
1384
1385
while tcp_server.clients:
1386
client = tcp_server.clients.pop()
1387
client.disable_hook = None
1388
client.disable()
1389
1390
atexit.register(cleanup)
1391
2308
1392
if not debug:
2309
try:
2310
with pidfile:
2311
pid = os.getpid()
2312
pidfile.write(str(pid) + "\n".encode("utf-8"))
2313
del pidfile
2314
except IOError:
2315
logger.error("Could not write to file %r with PID %d",
2316
pidfilename, pid)
2317
except NameError:
2318
# "pidfile" was never created
2319
pass
2320
del pidfilename
2321
2322
1393
signal.signal(signal.SIGINT, signal.SIG_IGN)
2323
2324
1394
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2325
1395
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2326
1396
2328
1398
class MandosDBusService(dbus.service.Object):
2329
1399
"""A D-Bus proxy object"""
2330
1400
def __init__(self):
2331
dbus.service.Object.__init__(self, bus, "/")
2332
_interface = "se.recompile.Mandos"
2333
2334
@dbus.service.signal(_interface, signature="o")
2335
def ClientAdded(self, objpath):
2336
"D-Bus signal"
2337
pass
2338
2339
@dbus.service.signal(_interface, signature="ss")
2340
def ClientNotFound(self, fingerprint, address):
2341
"D-Bus signal"
2342
pass
2343
2344
@dbus.service.signal(_interface, signature="os")
1401
dbus.service.Object.__init__(self, bus, u"/")
1402
_interface = u"se.bsnet.fukt.Mandos"
1403
1404
@dbus.service.signal(_interface, signature=u"oa{sv}")
1405
def ClientAdded(self, objpath, properties):
1406
"D-Bus signal"
1407
pass
1408
1409
@dbus.service.signal(_interface, signature=u"s")
1410
def ClientNotFound(self, fingerprint):
1411
"D-Bus signal"
1412
pass
1413
1414
@dbus.service.signal(_interface, signature=u"os")
2345
1415
def ClientRemoved(self, objpath, name):
2346
1416
"D-Bus signal"
2347
1417
pass
2348
1418
2349
@dbus.service.method(_interface, out_signature="ao")
1419
@dbus.service.method(_interface, out_signature=u"ao")
2350
1420
def GetAllClients(self):
2351
1421
"D-Bus method"
2352
1422
return dbus.Array(c.dbus_object_path
2353
for c in
2354
tcp_server.clients.itervalues())
1423
for c in tcp_server.clients)
2355
1424
2356
1425
@dbus.service.method(_interface,
2357
out_signature="a{oa{sv}}")
1426
out_signature=u"a{oa{sv}}")
2358
1427
def GetAllClientsWithProperties(self):
2359
1428
"D-Bus method"
2360
1429
return dbus.Dictionary(
2361
((c.dbus_object_path, c.GetAll(""))
2362
for c in tcp_server.clients.itervalues()),
2363
signature="oa{sv}")
1430
((c.dbus_object_path, c.GetAllProperties())
1431
for c in tcp_server.clients),
1432
signature=u"oa{sv}")
2364
1433
2365
@dbus.service.method(_interface, in_signature="o")
1434
@dbus.service.method(_interface, in_signature=u"o")
2366
1435
def RemoveClient(self, object_path):
2367
1436
"D-Bus method"
2368
for c in tcp_server.clients.itervalues():
1437
for c in tcp_server.clients:
2369
1438
if c.dbus_object_path == object_path:
2370
del tcp_server.clients[c.name]
1439
tcp_server.clients.remove(c)
2371
1440
c.remove_from_connection()
2372
1441
# Don't signal anything except ClientRemoved
2373
c.disable(quiet=True)
1442
c.disable(signal=False)
2374
1443
# Emit D-Bus signal
2375
1444
self.ClientRemoved(object_path, c.name)
2376
1445
return
2377
raise KeyError(object_path)
1446
raise KeyError
2378
1447
2379
1448
del _interface
2380
1449
2381
class MandosDBusServiceTransitional(MandosDBusService):
2382
__metaclass__ = AlternateDBusNamesMetaclass
2383
mandos_dbus_service = MandosDBusServiceTransitional()
2384
2385
def cleanup():
2386
"Cleanup function; run on exit"
2387
service.cleanup()
2388
2389
multiprocessing.active_children()
2390
if not (tcp_server.clients or client_settings):
2391
return
2392
2393
# Store client before exiting. Secrets are encrypted with key
2394
# based on what config file has. If config file is
2395
# removed/edited, old secret will thus be unrecovable.
2396
clients = []
2397
with Crypto() as crypt:
2398
for client in tcp_server.clients.itervalues():
2399
key = client_settings[client.name]["secret"]
2400
client.encrypted_secret = crypt.encrypt(client.secret,
2401
key)
2402
client_dict = {}
2403
2404
# A list of attributes that will not be stored when
2405
# shutting down.
2406
exclude = set(("bus", "changedstate", "secret"))
2407
for name, typ in (inspect.getmembers
2408
(dbus.service.Object)):
2409
exclude.add(name)
2410
2411
client_dict["encrypted_secret"] = (client
2412
.encrypted_secret)
2413
for attr in client.client_structure:
2414
if attr not in exclude:
2415
client_dict[attr] = getattr(client, attr)
2416
2417
clients.append(client_dict)
2418
del client_settings[client.name]["secret"]
2419
2420
try:
2421
with os.fdopen(os.open(stored_state_path,
2422
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2423
0600), "wb") as stored_state:
2424
pickle.dump((clients, client_settings), stored_state)
2425
except (IOError, OSError) as e:
2426
logger.warning("Could not save persistent state: {0}"
2427
.format(e))
2428
if e.errno not in (errno.ENOENT, errno.EACCES):
2429
raise
2430
2431
# Delete all clients, and settings from config
2432
while tcp_server.clients:
2433
name, client = tcp_server.clients.popitem()
2434
if use_dbus:
2435
client.remove_from_connection()
2436
# Don't signal anything except ClientRemoved
2437
client.disable(quiet=True)
2438
if use_dbus:
2439
# Emit D-Bus signal
2440
mandos_dbus_service.ClientRemoved(client
2441
.dbus_object_path,
2442
client.name)
2443
client_settings.clear()
2444
2445
atexit.register(cleanup)
2446
2447
for client in tcp_server.clients.itervalues():
1450
mandos_dbus_service = MandosDBusService()
1451
1452
for client in tcp_server.clients:
2448
1453
if use_dbus:
2449
1454
# Emit D-Bus signal
2450
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2451
# Need to initiate checking of clients
2452
if client.enabled:
2453
client.init_checker()
1455
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1456
client.GetAllProperties())
1457
client.enable()
2454
1458
2455
1459
tcp_server.enable()
2456
1460
tcp_server.server_activate()
2458
1462
# Find out what port we got
2459
1463
service.port = tcp_server.socket.getsockname()[1]
2460
1464
if use_ipv6:
2461
logger.info("Now listening on address %r, port %d,"
1465
logger.info(u"Now listening on address %r, port %d,"
2462
1466
" flowinfo %d, scope_id %d"
2463
1467
% tcp_server.socket.getsockname())
2464
1468
else: # IPv4
2465
logger.info("Now listening on address %r, port %d"
1469
logger.info(u"Now listening on address %r, port %d"
2466
1470
% tcp_server.socket.getsockname())
2467
1471
2468
1472
#service.interface = tcp_server.socket.getsockname()[3]
2471
1475
# From the Avahi example code
2472
1476
try:
2473
1477
service.activate()
2474
except dbus.exceptions.DBusException as error:
2475
logger.critical("DBusException: %s", error)
2476
cleanup()
1478
except dbus.exceptions.DBusException, error:
1479
logger.critical(u"DBusException: %s", error)
2477
1480
sys.exit(1)
2478
1481
# End of Avahi example code
2479
1482
2482
1485
(tcp_server.handle_request
2483
1486
(*args[2:], **kwargs) or True))
2484
1487
2485
logger.debug("Starting main loop")
1488
logger.debug(u"Starting main loop")
2486
1489
main_loop.run()
2487
except AvahiError as error:
2488
logger.critical("AvahiError: %s", error)
2489
cleanup()
1490
except AvahiError, error:
1491
logger.critical(u"AvahiError: %s", error)
2490
1492
sys.exit(1)
2491
1493
except KeyboardInterrupt:
2492
1494
if debug:
2493
print("", file=sys.stderr)
2494
logger.debug("Server received KeyboardInterrupt")
2495
logger.debug("Server exiting")
2496
# Must run before the D-Bus bus name gets deregistered
2497
cleanup()
2498
1495
print >> sys.stderr
1496
logger.debug(u"Server received KeyboardInterrupt")
1497
logger.debug(u"Server exiting")
2499
1498
2500
1499
if __name__ == '__main__':
2501
1500
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0