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- Committer: Teddy Hogeborn
- Date: 2012-05-26 22:56:38 UTC
- mfrom: (589.1.1 socket-option)
- Revision ID: teddy@recompile.se-20120526225638-4hvqyrvmj0036lfn
Merge "--socket" option for server.
This is suggested by the GNU Coding Standards' Table of Long Options,
and will probably also allow socket activation (e.g. by systemd(8)).
This is suggested by the GNU Coding Standards' Table of Long Options,
and will probably also allow socket activation (e.g. by systemd(8)).
- files added:
- DBUS-API
- debian/source
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
14
# Copyright © 2008-2012 Teddy Hogeborn
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# Copyright © 2008-2012 Björn Påhlsson
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16
#
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# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
34
from __future__ import division, with_statement, absolute_import
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
from future_builtins import *
35
38
36
39
import SocketServer as socketserver
37
40
import socket
38
import optparse
41
import argparse
39
42
import datetime
40
43
import errno
41
44
import gnutls.crypto
55
58
import logging
56
59
import logging.handlers
57
60
import pwd
58
from contextlib import closing
61
import contextlib
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62
import struct
60
63
import fcntl
61
64
import functools
65
import cPickle as pickle
66
import multiprocessing
67
import types
68
import binascii
69
import tempfile
70
import itertools
62
71
63
72
import dbus
64
73
import dbus.service
69
78
import ctypes.util
70
79
import xml.dom.minidom
71
80
import inspect
81
import GnuPGInterface
72
82
73
83
try:
74
84
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
78
88
except ImportError:
79
89
SO_BINDTODEVICE = None
80
90
81
82
version = "1.0.12"
83
84
logger = logging.Logger(u'mandos')
91
version = "1.5.4"
92
stored_state_file = "clients.pickle"
93
94
logger = logging.getLogger()
85
95
syslogger = (logging.handlers.SysLogHandler
86
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
87
address = "/dev/log"))
88
syslogger.setFormatter(logging.Formatter
89
(u'Mandos [%(process)d]: %(levelname)s:'
90
u' %(message)s'))
91
logger.addHandler(syslogger)
92
93
console = logging.StreamHandler()
94
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
95
u' %(levelname)s:'
96
u' %(message)s'))
97
logger.addHandler(console)
97
address = str("/dev/log")))
98
99
try:
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
103
except (OSError, AttributeError):
104
def if_nametoindex(interface):
105
"Get an interface index the hard way, i.e. using fcntl()"
106
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
107
with contextlib.closing(socket.socket()) as s:
108
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
113
return interface_index
114
115
116
def initlogger(debug, level=logging.WARNING):
117
"""init logger and add loglevel"""
118
119
syslogger.setFormatter(logging.Formatter
120
('Mandos [%(process)d]: %(levelname)s:'
121
' %(message)s'))
122
logger.addHandler(syslogger)
123
124
if debug:
125
console = logging.StreamHandler()
126
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
127
' [%(process)d]:'
128
' %(levelname)s:'
129
' %(message)s'))
130
logger.addHandler(console)
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logger.setLevel(level)
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133
134
class PGPError(Exception):
135
"""Exception if encryption/decryption fails"""
136
pass
137
138
139
class PGPEngine(object):
140
"""A simple class for OpenPGP symmetric encryption & decryption"""
141
def __init__(self):
142
self.gnupg = GnuPGInterface.GnuPG()
143
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
144
self.gnupg = GnuPGInterface.GnuPG()
145
self.gnupg.options.meta_interactive = False
146
self.gnupg.options.homedir = self.tempdir
147
self.gnupg.options.extra_args.extend(['--force-mdc',
148
'--quiet',
149
'--no-use-agent'])
150
151
def __enter__(self):
152
return self
153
154
def __exit__(self, exc_type, exc_value, traceback):
155
self._cleanup()
156
return False
157
158
def __del__(self):
159
self._cleanup()
160
161
def _cleanup(self):
162
if self.tempdir is not None:
163
# Delete contents of tempdir
164
for root, dirs, files in os.walk(self.tempdir,
165
topdown = False):
166
for filename in files:
167
os.remove(os.path.join(root, filename))
168
for dirname in dirs:
169
os.rmdir(os.path.join(root, dirname))
170
# Remove tempdir
171
os.rmdir(self.tempdir)
172
self.tempdir = None
173
174
def password_encode(self, password):
175
# Passphrase can not be empty and can not contain newlines or
176
# NUL bytes. So we prefix it and hex encode it.
177
return b"mandos" + binascii.hexlify(password)
178
179
def encrypt(self, data, password):
180
self.gnupg.passphrase = self.password_encode(password)
181
with open(os.devnull, "w") as devnull:
182
try:
183
proc = self.gnupg.run(['--symmetric'],
184
create_fhs=['stdin', 'stdout'],
185
attach_fhs={'stderr': devnull})
186
with contextlib.closing(proc.handles['stdin']) as f:
187
f.write(data)
188
with contextlib.closing(proc.handles['stdout']) as f:
189
ciphertext = f.read()
190
proc.wait()
191
except IOError as e:
192
raise PGPError(e)
193
self.gnupg.passphrase = None
194
return ciphertext
195
196
def decrypt(self, data, password):
197
self.gnupg.passphrase = self.password_encode(password)
198
with open(os.devnull, "w") as devnull:
199
try:
200
proc = self.gnupg.run(['--decrypt'],
201
create_fhs=['stdin', 'stdout'],
202
attach_fhs={'stderr': devnull})
203
with contextlib.closing(proc.handles['stdin']) as f:
204
f.write(data)
205
with contextlib.closing(proc.handles['stdout']) as f:
206
decrypted_plaintext = f.read()
207
proc.wait()
208
except IOError as e:
209
raise PGPError(e)
210
self.gnupg.passphrase = None
211
return decrypted_plaintext
212
98
213
99
214
class AvahiError(Exception):
100
215
def __init__(self, value, *args, **kwargs):
116
231
Attributes:
117
232
interface: integer; avahi.IF_UNSPEC or an interface index.
118
233
Used to optionally bind to the specified interface.
119
name: string; Example: u'Mandos'
120
type: string; Example: u'_mandos._tcp'.
234
name: string; Example: 'Mandos'
235
type: string; Example: '_mandos._tcp'.
121
236
See <http://www.dns-sd.org/ServiceTypes.html>
122
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port: integer; what port to announce
123
238
TXT: list of strings; TXT record for the service
130
245
server: D-Bus Server
131
246
bus: dbus.SystemBus()
132
247
"""
248
133
249
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
134
250
servicetype = None, port = None, TXT = None,
135
domain = u"", host = u"", max_renames = 32768,
251
domain = "", host = "", max_renames = 32768,
136
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protocol = avahi.PROTO_UNSPEC, bus = None):
137
253
self.interface = interface
138
254
self.name = name
147
263
self.group = None # our entry group
148
264
self.server = None
149
265
self.bus = bus
266
self.entry_group_state_changed_match = None
267
150
268
def rename(self):
151
269
"""Derived from the Avahi example code"""
152
270
if self.rename_count >= self.max_renames:
153
logger.critical(u"No suitable Zeroconf service name found"
154
u" after %i retries, exiting.",
271
logger.critical("No suitable Zeroconf service name found"
272
" after %i retries, exiting.",
155
273
self.rename_count)
156
raise AvahiServiceError(u"Too many renames")
157
self.name = self.server.GetAlternativeServiceName(self.name)
158
logger.info(u"Changing Zeroconf service name to %r ...",
159
unicode(self.name))
160
syslogger.setFormatter(logging.Formatter
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
163
% self.name))
274
raise AvahiServiceError("Too many renames")
275
self.name = unicode(self.server
276
.GetAlternativeServiceName(self.name))
277
logger.info("Changing Zeroconf service name to %r ...",
278
self.name)
164
279
self.remove()
165
self.add()
280
try:
281
self.add()
282
except dbus.exceptions.DBusException as error:
283
logger.critical("D-Bus Exception", exc_info=error)
284
self.cleanup()
285
os._exit(1)
166
286
self.rename_count += 1
287
167
288
def remove(self):
168
289
"""Derived from the Avahi example code"""
290
if self.entry_group_state_changed_match is not None:
291
self.entry_group_state_changed_match.remove()
292
self.entry_group_state_changed_match = None
169
293
if self.group is not None:
170
294
self.group.Reset()
295
171
296
def add(self):
172
297
"""Derived from the Avahi example code"""
298
self.remove()
173
299
if self.group is None:
174
300
self.group = dbus.Interface(
175
301
self.bus.get_object(avahi.DBUS_NAME,
176
302
self.server.EntryGroupNew()),
177
303
avahi.DBUS_INTERFACE_ENTRY_GROUP)
178
self.group.connect_to_signal('StateChanged',
179
self
180
.entry_group_state_changed)
181
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
304
self.entry_group_state_changed_match = (
305
self.group.connect_to_signal(
306
'StateChanged', self.entry_group_state_changed))
307
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
182
308
self.name, self.type)
183
309
self.group.AddService(
184
310
self.interface,
189
315
dbus.UInt16(self.port),
190
316
avahi.string_array_to_txt_array(self.TXT))
191
317
self.group.Commit()
318
192
319
def entry_group_state_changed(self, state, error):
193
320
"""Derived from the Avahi example code"""
194
logger.debug(u"Avahi state change: %i", state)
321
logger.debug("Avahi entry group state change: %i", state)
195
322
196
323
if state == avahi.ENTRY_GROUP_ESTABLISHED:
197
logger.debug(u"Zeroconf service established.")
324
logger.debug("Zeroconf service established.")
198
325
elif state == avahi.ENTRY_GROUP_COLLISION:
199
logger.warning(u"Zeroconf service name collision.")
326
logger.info("Zeroconf service name collision.")
200
327
self.rename()
201
328
elif state == avahi.ENTRY_GROUP_FAILURE:
202
logger.critical(u"Avahi: Error in group state changed %s",
329
logger.critical("Avahi: Error in group state changed %s",
203
330
unicode(error))
204
raise AvahiGroupError(u"State changed: %s"
205
% unicode(error))
331
raise AvahiGroupError("State changed: {0!s}"
332
.format(error))
333
206
334
def cleanup(self):
207
335
"""Derived from the Avahi example code"""
208
336
if self.group is not None:
209
self.group.Free()
337
try:
338
self.group.Free()
339
except (dbus.exceptions.UnknownMethodException,
340
dbus.exceptions.DBusException):
341
pass
210
342
self.group = None
211
def server_state_changed(self, state):
343
self.remove()
344
345
def server_state_changed(self, state, error=None):
212
346
"""Derived from the Avahi example code"""
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
215
self.remove()
347
logger.debug("Avahi server state change: %i", state)
348
bad_states = { avahi.SERVER_INVALID:
349
"Zeroconf server invalid",
350
avahi.SERVER_REGISTERING: None,
351
avahi.SERVER_COLLISION:
352
"Zeroconf server name collision",
353
avahi.SERVER_FAILURE:
354
"Zeroconf server failure" }
355
if state in bad_states:
356
if bad_states[state] is not None:
357
if error is None:
358
logger.error(bad_states[state])
359
else:
360
logger.error(bad_states[state] + ": %r", error)
361
self.cleanup()
216
362
elif state == avahi.SERVER_RUNNING:
217
363
self.add()
364
else:
365
if error is None:
366
logger.debug("Unknown state: %r", state)
367
else:
368
logger.debug("Unknown state: %r: %r", state, error)
369
218
370
def activate(self):
219
371
"""Derived from the Avahi example code"""
220
372
if self.server is None:
221
373
self.server = dbus.Interface(
222
374
self.bus.get_object(avahi.DBUS_NAME,
223
avahi.DBUS_PATH_SERVER),
375
avahi.DBUS_PATH_SERVER,
376
follow_name_owner_changes=True),
224
377
avahi.DBUS_INTERFACE_SERVER)
225
self.server.connect_to_signal(u"StateChanged",
378
self.server.connect_to_signal("StateChanged",
226
379
self.server_state_changed)
227
380
self.server_state_changed(self.server.GetState())
228
381
229
382
383
class AvahiServiceToSyslog(AvahiService):
384
def rename(self):
385
"""Add the new name to the syslog messages"""
386
ret = AvahiService.rename(self)
387
syslogger.setFormatter(logging.Formatter
388
('Mandos ({0}) [%(process)d]:'
389
' %(levelname)s: %(message)s'
390
.format(self.name)))
391
return ret
392
393
394
def timedelta_to_milliseconds(td):
395
"Convert a datetime.timedelta() to milliseconds"
396
return ((td.days * 24 * 60 * 60 * 1000)
397
+ (td.seconds * 1000)
398
+ (td.microseconds // 1000))
399
400
230
401
class Client(object):
231
402
"""A representation of a client host served by this server.
232
403
233
404
Attributes:
234
name: string; from the config file, used in log messages and
235
D-Bus identifiers
236
fingerprint: string (40 or 32 hexadecimal digits); used to
237
uniquely identify the client
238
secret: bytestring; sent verbatim (over TLS) to client
239
host: string; available for use by the checker command
240
created: datetime.datetime(); (UTC) object creation
241
last_enabled: datetime.datetime(); (UTC)
242
enabled: bool()
243
last_checked_ok: datetime.datetime(); (UTC) or None
244
timeout: datetime.timedelta(); How long from last_checked_ok
245
until this client is invalid
246
interval: datetime.timedelta(); How often to start a new checker
247
disable_hook: If set, called by disable() as disable_hook(self)
405
approved: bool(); 'None' if not yet approved/disapproved
406
approval_delay: datetime.timedelta(); Time to wait for approval
407
approval_duration: datetime.timedelta(); Duration of one approval
248
408
checker: subprocess.Popen(); a running checker process used
249
409
to see if the client lives.
250
410
'None' if no process is running.
251
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
253
checker_callback_tag: - '' -
254
checker_command: string; External command which is run to check if
255
client lives. %() expansions are done at
411
checker_callback_tag: a gobject event source tag, or None
412
checker_command: string; External command which is run to check
413
if client lives. %() expansions are done at
256
414
runtime with vars(self) as dict, so that for
257
415
instance %(name)s can be used in the command.
416
checker_initiator_tag: a gobject event source tag, or None
417
created: datetime.datetime(); (UTC) object creation
418
client_structure: Object describing what attributes a client has
419
and is used for storing the client at exit
258
420
current_checker_command: string; current running checker_command
421
disable_initiator_tag: a gobject event source tag, or None
422
enabled: bool()
423
fingerprint: string (40 or 32 hexadecimal digits); used to
424
uniquely identify the client
425
host: string; available for use by the checker command
426
interval: datetime.timedelta(); How often to start a new checker
427
last_approval_request: datetime.datetime(); (UTC) or None
428
last_checked_ok: datetime.datetime(); (UTC) or None
429
last_checker_status: integer between 0 and 255 reflecting exit
430
status of last checker. -1 reflects crashed
431
checker, -2 means no checker completed yet.
432
last_enabled: datetime.datetime(); (UTC) or None
433
name: string; from the config file, used in log messages and
434
D-Bus identifiers
435
secret: bytestring; sent verbatim (over TLS) to client
436
timeout: datetime.timedelta(); How long from last_checked_ok
437
until this client is disabled
438
extended_timeout: extra long timeout when secret has been sent
439
runtime_expansions: Allowed attributes for runtime expansion.
440
expires: datetime.datetime(); time (UTC) when a client will be
441
disabled, or None
259
442
"""
260
443
261
@staticmethod
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
444
runtime_expansions = ("approval_delay", "approval_duration",
445
"created", "enabled", "expires",
446
"fingerprint", "host", "interval",
447
"last_approval_request", "last_checked_ok",
448
"last_enabled", "name", "timeout")
449
client_defaults = { "timeout": "5m",
450
"extended_timeout": "15m",
451
"interval": "2m",
452
"checker": "fping -q -- %%(host)s",
453
"host": "",
454
"approval_delay": "0s",
455
"approval_duration": "1s",
456
"approved_by_default": "True",
457
"enabled": "True",
458
}
267
459
268
460
def timeout_milliseconds(self):
269
461
"Return the 'timeout' attribute in milliseconds"
270
return self._timedelta_to_milliseconds(self.timeout)
462
return timedelta_to_milliseconds(self.timeout)
463
464
def extended_timeout_milliseconds(self):
465
"Return the 'extended_timeout' attribute in milliseconds"
466
return timedelta_to_milliseconds(self.extended_timeout)
271
467
272
468
def interval_milliseconds(self):
273
469
"Return the 'interval' attribute in milliseconds"
274
return self._timedelta_to_milliseconds(self.interval)
275
276
def __init__(self, name = None, disable_hook=None, config=None):
277
"""Note: the 'checker' key in 'config' sets the
278
'checker_command' attribute and *not* the 'checker'
279
attribute."""
470
return timedelta_to_milliseconds(self.interval)
471
472
def approval_delay_milliseconds(self):
473
return timedelta_to_milliseconds(self.approval_delay)
474
475
@staticmethod
476
def config_parser(config):
477
"""Construct a new dict of client settings of this form:
478
{ client_name: {setting_name: value, ...}, ...}
479
with exceptions for any special settings as defined above.
480
NOTE: Must be a pure function. Must return the same result
481
value given the same arguments.
482
"""
483
settings = {}
484
for client_name in config.sections():
485
section = dict(config.items(client_name))
486
client = settings[client_name] = {}
487
488
client["host"] = section["host"]
489
# Reformat values from string types to Python types
490
client["approved_by_default"] = config.getboolean(
491
client_name, "approved_by_default")
492
client["enabled"] = config.getboolean(client_name,
493
"enabled")
494
495
client["fingerprint"] = (section["fingerprint"].upper()
496
.replace(" ", ""))
497
if "secret" in section:
498
client["secret"] = section["secret"].decode("base64")
499
elif "secfile" in section:
500
with open(os.path.expanduser(os.path.expandvars
501
(section["secfile"])),
502
"rb") as secfile:
503
client["secret"] = secfile.read()
504
else:
505
raise TypeError("No secret or secfile for section {0}"
506
.format(section))
507
client["timeout"] = string_to_delta(section["timeout"])
508
client["extended_timeout"] = string_to_delta(
509
section["extended_timeout"])
510
client["interval"] = string_to_delta(section["interval"])
511
client["approval_delay"] = string_to_delta(
512
section["approval_delay"])
513
client["approval_duration"] = string_to_delta(
514
section["approval_duration"])
515
client["checker_command"] = section["checker"]
516
client["last_approval_request"] = None
517
client["last_checked_ok"] = None
518
client["last_checker_status"] = -2
519
520
return settings
521
522
def __init__(self, settings, name = None):
280
523
self.name = name
281
if config is None:
282
config = {}
283
logger.debug(u"Creating client %r", self.name)
524
# adding all client settings
525
for setting, value in settings.iteritems():
526
setattr(self, setting, value)
527
528
if self.enabled:
529
if not hasattr(self, "last_enabled"):
530
self.last_enabled = datetime.datetime.utcnow()
531
if not hasattr(self, "expires"):
532
self.expires = (datetime.datetime.utcnow()
533
+ self.timeout)
534
else:
535
self.last_enabled = None
536
self.expires = None
537
538
logger.debug("Creating client %r", self.name)
284
539
# Uppercase and remove spaces from fingerprint for later
285
540
# comparison purposes with return value from the fingerprint()
286
541
# function
287
self.fingerprint = (config[u"fingerprint"].upper()
288
.replace(u" ", u""))
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
294
(os.path.expandvars
295
(config[u"secfile"])),
296
"rb")) as secfile:
297
self.secret = secfile.read()
298
else:
299
raise TypeError(u"No secret or secfile for client %s"
300
% self.name)
301
self.host = config.get(u"host", u"")
302
self.created = datetime.datetime.utcnow()
303
self.enabled = False
304
self.last_enabled = None
305
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
308
self.disable_hook = disable_hook
542
logger.debug(" Fingerprint: %s", self.fingerprint)
543
self.created = settings.get("created",
544
datetime.datetime.utcnow())
545
546
# attributes specific for this server instance
309
547
self.checker = None
310
548
self.checker_initiator_tag = None
311
549
self.disable_initiator_tag = None
312
550
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
314
551
self.current_checker_command = None
315
self.last_connect = None
552
self.approved = None
553
self.approvals_pending = 0
554
self.changedstate = (multiprocessing_manager
555
.Condition(multiprocessing_manager
556
.Lock()))
557
self.client_structure = [attr for attr in
558
self.__dict__.iterkeys()
559
if not attr.startswith("_")]
560
self.client_structure.append("client_structure")
561
562
for name, t in inspect.getmembers(type(self),
563
lambda obj:
564
isinstance(obj,
565
property)):
566
if not name.startswith("_"):
567
self.client_structure.append(name)
568
569
# Send notice to process children that client state has changed
570
def send_changedstate(self):
571
with self.changedstate:
572
self.changedstate.notify_all()
316
573
317
574
def enable(self):
318
575
"""Start this client's checker and timeout hooks"""
319
if getattr(self, u"enabled", False):
576
if getattr(self, "enabled", False):
320
577
# Already enabled
321
578
return
579
self.expires = datetime.datetime.utcnow() + self.timeout
580
self.enabled = True
322
581
self.last_enabled = datetime.datetime.utcnow()
582
self.init_checker()
583
self.send_changedstate()
584
585
def disable(self, quiet=True):
586
"""Disable this client."""
587
if not getattr(self, "enabled", False):
588
return False
589
if not quiet:
590
logger.info("Disabling client %s", self.name)
591
if getattr(self, "disable_initiator_tag", None) is not None:
592
gobject.source_remove(self.disable_initiator_tag)
593
self.disable_initiator_tag = None
594
self.expires = None
595
if getattr(self, "checker_initiator_tag", None) is not None:
596
gobject.source_remove(self.checker_initiator_tag)
597
self.checker_initiator_tag = None
598
self.stop_checker()
599
self.enabled = False
600
if not quiet:
601
self.send_changedstate()
602
# Do not run this again if called by a gobject.timeout_add
603
return False
604
605
def __del__(self):
606
self.disable()
607
608
def init_checker(self):
323
609
# Schedule a new checker to be started an 'interval' from now,
324
610
# and every interval from then on.
611
if self.checker_initiator_tag is not None:
612
gobject.source_remove(self.checker_initiator_tag)
325
613
self.checker_initiator_tag = (gobject.timeout_add
326
614
(self.interval_milliseconds(),
327
615
self.start_checker))
328
# Also start a new checker *right now*.
329
self.start_checker()
330
616
# Schedule a disable() when 'timeout' has passed
617
if self.disable_initiator_tag is not None:
618
gobject.source_remove(self.disable_initiator_tag)
331
619
self.disable_initiator_tag = (gobject.timeout_add
332
620
(self.timeout_milliseconds(),
333
621
self.disable))
334
self.enabled = True
335
336
def disable(self):
337
"""Disable this client."""
338
if not getattr(self, "enabled", False):
339
return False
340
logger.info(u"Disabling client %s", self.name)
341
if getattr(self, u"disable_initiator_tag", False):
342
gobject.source_remove(self.disable_initiator_tag)
343
self.disable_initiator_tag = None
344
if getattr(self, u"checker_initiator_tag", False):
345
gobject.source_remove(self.checker_initiator_tag)
346
self.checker_initiator_tag = None
347
self.stop_checker()
348
if self.disable_hook:
349
self.disable_hook(self)
350
self.enabled = False
351
# Do not run this again if called by a gobject.timeout_add
352
return False
353
354
def __del__(self):
355
self.disable_hook = None
356
self.disable()
622
# Also start a new checker *right now*.
623
self.start_checker()
357
624
358
625
def checker_callback(self, pid, condition, command):
359
626
"""The checker has completed, so take appropriate actions."""
360
627
self.checker_callback_tag = None
361
628
self.checker = None
362
629
if os.WIFEXITED(condition):
363
exitstatus = os.WEXITSTATUS(condition)
364
if exitstatus == 0:
365
logger.info(u"Checker for %(name)s succeeded",
630
self.last_checker_status = os.WEXITSTATUS(condition)
631
if self.last_checker_status == 0:
632
logger.info("Checker for %(name)s succeeded",
366
633
vars(self))
367
634
self.checked_ok()
368
635
else:
369
logger.info(u"Checker for %(name)s failed",
636
logger.info("Checker for %(name)s failed",
370
637
vars(self))
371
638
else:
372
logger.warning(u"Checker for %(name)s crashed?",
639
self.last_checker_status = -1
640
logger.warning("Checker for %(name)s crashed?",
373
641
vars(self))
374
642
375
643
def checked_ok(self):
376
"""Bump up the timeout for this client.
377
378
This should only be called when the client has been seen,
379
alive and well.
380
"""
644
"""Assert that the client has been seen, alive and well."""
381
645
self.last_checked_ok = datetime.datetime.utcnow()
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = (gobject.timeout_add
384
(self.timeout_milliseconds(),
385
self.disable))
646
self.last_checker_status = 0
647
self.bump_timeout()
648
649
def bump_timeout(self, timeout=None):
650
"""Bump up the timeout for this client."""
651
if timeout is None:
652
timeout = self.timeout
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = None
656
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(timedelta_to_milliseconds
659
(timeout), self.disable))
660
self.expires = datetime.datetime.utcnow() + timeout
661
662
def need_approval(self):
663
self.last_approval_request = datetime.datetime.utcnow()
386
664
387
665
def start_checker(self):
388
666
"""Start a new checker subprocess if one is not running.
390
668
If a checker already exists, leave it running and do
391
669
nothing."""
392
670
# The reason for not killing a running checker is that if we
393
# did that, then if a checker (for some reason) started
394
# running slowly and taking more than 'interval' time, the
395
# client would inevitably timeout, since no checker would get
396
# a chance to run to completion. If we instead leave running
671
# did that, and if a checker (for some reason) started running
672
# slowly and taking more than 'interval' time, then the client
673
# would inevitably timeout, since no checker would get a
674
# chance to run to completion. If we instead leave running
397
675
# checkers alone, the checker would have to take more time
398
# than 'timeout' for the client to be declared invalid, which
399
# is as it should be.
676
# than 'timeout' for the client to be disabled, which is as it
677
# should be.
400
678
401
679
# If a checker exists, make sure it is not a zombie
402
680
try:
403
681
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
404
except (AttributeError, OSError), error:
682
except (AttributeError, OSError) as error:
405
683
if (isinstance(error, OSError)
406
684
and error.errno != errno.ECHILD):
407
685
raise error
408
686
else:
409
687
if pid:
410
logger.warning(u"Checker was a zombie")
688
logger.warning("Checker was a zombie")
411
689
gobject.source_remove(self.checker_callback_tag)
412
690
self.checker_callback(pid, status,
413
691
self.current_checker_command)
414
692
# Start a new checker if needed
415
693
if self.checker is None:
694
# Escape attributes for the shell
695
escaped_attrs = dict(
696
(attr, re.escape(unicode(getattr(self, attr))))
697
for attr in
698
self.runtime_expansions)
416
699
try:
417
# In case checker_command has exactly one % operator
418
command = self.checker_command % self.host
419
except TypeError:
420
# Escape attributes for the shell
421
escaped_attrs = dict((key,
422
re.escape(unicode(str(val),
423
errors=
424
u'replace')))
425
for key, val in
426
vars(self).iteritems())
427
try:
428
command = self.checker_command % escaped_attrs
429
except TypeError, error:
430
logger.error(u'Could not format string "%s":'
431
u' %s', self.checker_command, error)
432
return True # Try again later
700
command = self.checker_command % escaped_attrs
701
except TypeError as error:
702
logger.error('Could not format string "%s"',
703
self.checker_command, exc_info=error)
704
return True # Try again later
433
705
self.current_checker_command = command
434
706
try:
435
logger.info(u"Starting checker %r for %s",
707
logger.info("Starting checker %r for %s",
436
708
command, self.name)
437
709
# We don't need to redirect stdout and stderr, since
438
710
# in normal mode, that is already done by daemon(),
440
712
# always replaced by /dev/null.)
441
713
self.checker = subprocess.Popen(command,
442
714
close_fds=True,
443
shell=True, cwd=u"/")
444
self.checker_callback_tag = (gobject.child_watch_add
445
(self.checker.pid,
446
self.checker_callback,
447
data=command))
448
# The checker may have completed before the gobject
449
# watch was added. Check for this.
450
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
451
if pid:
452
gobject.source_remove(self.checker_callback_tag)
453
self.checker_callback(pid, status, command)
454
except OSError, error:
455
logger.error(u"Failed to start subprocess: %s",
456
error)
715
shell=True, cwd="/")
716
except OSError as error:
717
logger.error("Failed to start subprocess",
718
exc_info=error)
719
self.checker_callback_tag = (gobject.child_watch_add
720
(self.checker.pid,
721
self.checker_callback,
722
data=command))
723
# The checker may have completed before the gobject
724
# watch was added. Check for this.
725
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
726
if pid:
727
gobject.source_remove(self.checker_callback_tag)
728
self.checker_callback(pid, status, command)
457
729
# Re-run this periodically if run by gobject.timeout_add
458
730
return True
459
731
462
734
if self.checker_callback_tag:
463
735
gobject.source_remove(self.checker_callback_tag)
464
736
self.checker_callback_tag = None
465
if getattr(self, u"checker", None) is None:
737
if getattr(self, "checker", None) is None:
466
738
return
467
logger.debug(u"Stopping checker for %(name)s", vars(self))
739
logger.debug("Stopping checker for %(name)s", vars(self))
468
740
try:
469
os.kill(self.checker.pid, signal.SIGTERM)
470
#os.sleep(0.5)
741
self.checker.terminate()
742
#time.sleep(0.5)
471
743
#if self.checker.poll() is None:
472
# os.kill(self.checker.pid, signal.SIGKILL)
473
except OSError, error:
744
# self.checker.kill()
745
except OSError as error:
474
746
if error.errno != errno.ESRCH: # No such process
475
747
raise
476
748
self.checker = None
477
478
def still_valid(self):
479
"""Has the timeout not yet passed for this client?"""
480
if not getattr(self, u"enabled", False):
481
return False
482
now = datetime.datetime.utcnow()
483
if self.last_checked_ok is None:
484
return now < (self.created + self.timeout)
485
else:
486
return now < (self.last_checked_ok + self.timeout)
487
488
489
def dbus_service_property(dbus_interface, signature=u"v",
490
access=u"readwrite", byte_arrays=False):
749
750
751
def dbus_service_property(dbus_interface, signature="v",
752
access="readwrite", byte_arrays=False):
491
753
"""Decorators for marking methods of a DBusObjectWithProperties to
492
754
become properties on the D-Bus.
493
755
498
760
dbus.service.method, except there is only "signature", since the
499
761
type from Get() and the type sent to Set() is the same.
500
762
"""
763
# Encoding deeply encoded byte arrays is not supported yet by the
764
# "Set" method, so we fail early here:
765
if byte_arrays and signature != "ay":
766
raise ValueError("Byte arrays not supported for non-'ay'"
767
" signature {0!r}".format(signature))
501
768
def decorator(func):
502
769
func._dbus_is_property = True
503
770
func._dbus_interface = dbus_interface
504
771
func._dbus_signature = signature
505
772
func._dbus_access = access
506
773
func._dbus_name = func.__name__
507
if func._dbus_name.endswith(u"_dbus_property"):
774
if func._dbus_name.endswith("_dbus_property"):
508
775
func._dbus_name = func._dbus_name[:-14]
509
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
776
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
777
return func
778
return decorator
779
780
781
def dbus_interface_annotations(dbus_interface):
782
"""Decorator for marking functions returning interface annotations
783
784
Usage:
785
786
@dbus_interface_annotations("org.example.Interface")
787
def _foo(self): # Function name does not matter
788
return {"org.freedesktop.DBus.Deprecated": "true",
789
"org.freedesktop.DBus.Property.EmitsChangedSignal":
790
"false"}
791
"""
792
def decorator(func):
793
func._dbus_is_interface = True
794
func._dbus_interface = dbus_interface
795
func._dbus_name = dbus_interface
796
return func
797
return decorator
798
799
800
def dbus_annotations(annotations):
801
"""Decorator to annotate D-Bus methods, signals or properties
802
Usage:
803
804
@dbus_service_property("org.example.Interface", signature="b",
805
access="r")
806
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property."
808
"EmitsChangedSignal": "false"})
809
def Property_dbus_property(self):
810
return dbus.Boolean(False)
811
"""
812
def decorator(func):
813
func._dbus_annotations = annotations
510
814
return func
511
815
return decorator
512
816
532
836
533
837
class DBusObjectWithProperties(dbus.service.Object):
534
838
"""A D-Bus object with properties.
535
839
536
840
Classes inheriting from this can use the dbus_service_property
537
841
decorator to expose methods as D-Bus properties. It exposes the
538
842
standard Get(), Set(), and GetAll() methods on the D-Bus.
539
843
"""
540
844
541
845
@staticmethod
542
def _is_dbus_property(obj):
543
return getattr(obj, u"_dbus_is_property", False)
846
def _is_dbus_thing(thing):
847
"""Returns a function testing if an attribute is a D-Bus thing
848
849
If called like _is_dbus_thing("method") it returns a function
850
suitable for use as predicate to inspect.getmembers().
851
"""
852
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
853
False)
544
854
545
def _get_all_dbus_properties(self):
855
def _get_all_dbus_things(self, thing):
546
856
"""Returns a generator of (name, attribute) pairs
547
857
"""
548
return ((prop._dbus_name, prop)
549
for name, prop in
550
inspect.getmembers(self, self._is_dbus_property))
858
return ((getattr(athing.__get__(self), "_dbus_name",
859
name),
860
athing.__get__(self))
861
for cls in self.__class__.__mro__
862
for name, athing in
863
inspect.getmembers(cls,
864
self._is_dbus_thing(thing)))
551
865
552
866
def _get_dbus_property(self, interface_name, property_name):
553
867
"""Returns a bound method if one exists which is a D-Bus
554
868
property with the specified name and interface.
555
869
"""
556
for name in (property_name,
557
property_name + u"_dbus_property"):
558
prop = getattr(self, name, None)
559
if (prop is None
560
or not self._is_dbus_property(prop)
561
or prop._dbus_name != property_name
562
or (interface_name and prop._dbus_interface
563
and interface_name != prop._dbus_interface)):
564
continue
565
return prop
870
for cls in self.__class__.__mro__:
871
for name, value in (inspect.getmembers
872
(cls,
873
self._is_dbus_thing("property"))):
874
if (value._dbus_name == property_name
875
and value._dbus_interface == interface_name):
876
return value.__get__(self)
877
566
878
# No such property
567
raise DBusPropertyNotFound(self.dbus_object_path + u":"
568
+ interface_name + u"."
879
raise DBusPropertyNotFound(self.dbus_object_path + ":"
880
+ interface_name + "."
569
881
+ property_name)
570
882
571
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
572
out_signature=u"v")
883
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
884
out_signature="v")
573
885
def Get(self, interface_name, property_name):
574
886
"""Standard D-Bus property Get() method, see D-Bus standard.
575
887
"""
576
888
prop = self._get_dbus_property(interface_name, property_name)
577
if prop._dbus_access == u"write":
889
if prop._dbus_access == "write":
578
890
raise DBusPropertyAccessException(property_name)
579
891
value = prop()
580
if not hasattr(value, u"variant_level"):
892
if not hasattr(value, "variant_level"):
581
893
return value
582
894
return type(value)(value, variant_level=value.variant_level+1)
583
895
584
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
896
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
585
897
def Set(self, interface_name, property_name, value):
586
898
"""Standard D-Bus property Set() method, see D-Bus standard.
587
899
"""
588
900
prop = self._get_dbus_property(interface_name, property_name)
589
if prop._dbus_access == u"read":
901
if prop._dbus_access == "read":
590
902
raise DBusPropertyAccessException(property_name)
591
if prop._dbus_get_args_options[u"byte_arrays"]:
592
value = dbus.ByteArray(''.join(unichr(byte)
593
for byte in value))
903
if prop._dbus_get_args_options["byte_arrays"]:
904
# The byte_arrays option is not supported yet on
905
# signatures other than "ay".
906
if prop._dbus_signature != "ay":
907
raise ValueError
908
value = dbus.ByteArray(b''.join(chr(byte)
909
for byte in value))
594
910
prop(value)
595
911
596
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
597
out_signature=u"a{sv}")
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
913
out_signature="a{sv}")
598
914
def GetAll(self, interface_name):
599
915
"""Standard D-Bus property GetAll() method, see D-Bus
600
916
standard.
601
917
602
918
Note: Will not include properties with access="write".
603
919
"""
604
all = {}
605
for name, prop in self._get_all_dbus_properties():
920
properties = {}
921
for name, prop in self._get_all_dbus_things("property"):
606
922
if (interface_name
607
923
and interface_name != prop._dbus_interface):
608
924
# Interface non-empty but did not match
609
925
continue
610
926
# Ignore write-only properties
611
if prop._dbus_access == u"write":
927
if prop._dbus_access == "write":
612
928
continue
613
929
value = prop()
614
if not hasattr(value, u"variant_level"):
615
all[name] = value
930
if not hasattr(value, "variant_level"):
931
properties[name] = value
616
932
continue
617
all[name] = type(value)(value, variant_level=
618
value.variant_level+1)
619
return dbus.Dictionary(all, signature=u"sv")
933
properties[name] = type(value)(value, variant_level=
934
value.variant_level+1)
935
return dbus.Dictionary(properties, signature="sv")
620
936
621
937
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
622
out_signature=u"s",
938
out_signature="s",
623
939
path_keyword='object_path',
624
940
connection_keyword='connection')
625
941
def Introspect(self, object_path, connection):
626
"""Standard D-Bus method, overloaded to insert property tags.
942
"""Overloading of standard D-Bus method.
943
944
Inserts property tags and interface annotation tags.
627
945
"""
628
946
xmlstring = dbus.service.Object.Introspect(self, object_path,
629
947
connection)
630
948
try:
631
949
document = xml.dom.minidom.parseString(xmlstring)
632
950
def make_tag(document, name, prop):
633
e = document.createElement(u"property")
634
e.setAttribute(u"name", name)
635
e.setAttribute(u"type", prop._dbus_signature)
636
e.setAttribute(u"access", prop._dbus_access)
951
e = document.createElement("property")
952
e.setAttribute("name", name)
953
e.setAttribute("type", prop._dbus_signature)
954
e.setAttribute("access", prop._dbus_access)
637
955
return e
638
for if_tag in document.getElementsByTagName(u"interface"):
956
for if_tag in document.getElementsByTagName("interface"):
957
# Add property tags
639
958
for tag in (make_tag(document, name, prop)
640
959
for name, prop
641
in self._get_all_dbus_properties()
960
in self._get_all_dbus_things("property")
642
961
if prop._dbus_interface
643
== if_tag.getAttribute(u"name")):
962
== if_tag.getAttribute("name")):
644
963
if_tag.appendChild(tag)
964
# Add annotation tags
965
for typ in ("method", "signal", "property"):
966
for tag in if_tag.getElementsByTagName(typ):
967
annots = dict()
968
for name, prop in (self.
969
_get_all_dbus_things(typ)):
970
if (name == tag.getAttribute("name")
971
and prop._dbus_interface
972
== if_tag.getAttribute("name")):
973
annots.update(getattr
974
(prop,
975
"_dbus_annotations",
976
{}))
977
for name, value in annots.iteritems():
978
ann_tag = document.createElement(
979
"annotation")
980
ann_tag.setAttribute("name", name)
981
ann_tag.setAttribute("value", value)
982
tag.appendChild(ann_tag)
983
# Add interface annotation tags
984
for annotation, value in dict(
985
itertools.chain.from_iterable(
986
annotations().iteritems()
987
for name, annotations in
988
self._get_all_dbus_things("interface")
989
if name == if_tag.getAttribute("name")
990
)).iteritems():
991
ann_tag = document.createElement("annotation")
992
ann_tag.setAttribute("name", annotation)
993
ann_tag.setAttribute("value", value)
994
if_tag.appendChild(ann_tag)
645
995
# Add the names to the return values for the
646
996
# "org.freedesktop.DBus.Properties" methods
647
if (if_tag.getAttribute(u"name")
648
== u"org.freedesktop.DBus.Properties"):
649
for cn in if_tag.getElementsByTagName(u"method"):
650
if cn.getAttribute(u"name") == u"Get":
651
for arg in cn.getElementsByTagName(u"arg"):
652
if (arg.getAttribute(u"direction")
653
== u"out"):
654
arg.setAttribute(u"name", u"value")
655
elif cn.getAttribute(u"name") == u"GetAll":
656
for arg in cn.getElementsByTagName(u"arg"):
657
if (arg.getAttribute(u"direction")
658
== u"out"):
659
arg.setAttribute(u"name", u"props")
660
xmlstring = document.toxml(u"utf-8")
997
if (if_tag.getAttribute("name")
998
== "org.freedesktop.DBus.Properties"):
999
for cn in if_tag.getElementsByTagName("method"):
1000
if cn.getAttribute("name") == "Get":
1001
for arg in cn.getElementsByTagName("arg"):
1002
if (arg.getAttribute("direction")
1003
== "out"):
1004
arg.setAttribute("name", "value")
1005
elif cn.getAttribute("name") == "GetAll":
1006
for arg in cn.getElementsByTagName("arg"):
1007
if (arg.getAttribute("direction")
1008
== "out"):
1009
arg.setAttribute("name", "props")
1010
xmlstring = document.toxml("utf-8")
661
1011
document.unlink()
662
1012
except (AttributeError, xml.dom.DOMException,
663
xml.parsers.expat.ExpatError), error:
664
logger.error(u"Failed to override Introspection method",
665
error)
1013
xml.parsers.expat.ExpatError) as error:
1014
logger.error("Failed to override Introspection method",
1015
exc_info=error)
666
1016
return xmlstring
667
1017
668
1018
1019
def datetime_to_dbus(dt, variant_level=0):
1020
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1021
if dt is None:
1022
return dbus.String("", variant_level = variant_level)
1023
return dbus.String(dt.isoformat(),
1024
variant_level=variant_level)
1025
1026
1027
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1028
"""A class decorator; applied to a subclass of
1029
dbus.service.Object, it will add alternate D-Bus attributes with
1030
interface names according to the "alt_interface_names" mapping.
1031
Usage:
1032
1033
@alternate_dbus_interfaces({"org.example.Interface":
1034
"net.example.AlternateInterface"})
1035
class SampleDBusObject(dbus.service.Object):
1036
@dbus.service.method("org.example.Interface")
1037
def SampleDBusMethod():
1038
pass
1039
1040
The above "SampleDBusMethod" on "SampleDBusObject" will be
1041
reachable via two interfaces: "org.example.Interface" and
1042
"net.example.AlternateInterface", the latter of which will have
1043
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1044
"true", unless "deprecate" is passed with a False value.
1045
1046
This works for methods and signals, and also for D-Bus properties
1047
(from DBusObjectWithProperties) and interfaces (from the
1048
dbus_interface_annotations decorator).
1049
"""
1050
def wrapper(cls):
1051
for orig_interface_name, alt_interface_name in (
1052
alt_interface_names.iteritems()):
1053
attr = {}
1054
interface_names = set()
1055
# Go though all attributes of the class
1056
for attrname, attribute in inspect.getmembers(cls):
1057
# Ignore non-D-Bus attributes, and D-Bus attributes
1058
# with the wrong interface name
1059
if (not hasattr(attribute, "_dbus_interface")
1060
or not attribute._dbus_interface
1061
.startswith(orig_interface_name)):
1062
continue
1063
# Create an alternate D-Bus interface name based on
1064
# the current name
1065
alt_interface = (attribute._dbus_interface
1066
.replace(orig_interface_name,
1067
alt_interface_name))
1068
interface_names.add(alt_interface)
1069
# Is this a D-Bus signal?
1070
if getattr(attribute, "_dbus_is_signal", False):
1071
# Extract the original non-method function by
1072
# black magic
1073
nonmethod_func = (dict(
1074
zip(attribute.func_code.co_freevars,
1075
attribute.__closure__))["func"]
1076
.cell_contents)
1077
# Create a new, but exactly alike, function
1078
# object, and decorate it to be a new D-Bus signal
1079
# with the alternate D-Bus interface name
1080
new_function = (dbus.service.signal
1081
(alt_interface,
1082
attribute._dbus_signature)
1083
(types.FunctionType(
1084
nonmethod_func.func_code,
1085
nonmethod_func.func_globals,
1086
nonmethod_func.func_name,
1087
nonmethod_func.func_defaults,
1088
nonmethod_func.func_closure)))
1089
# Copy annotations, if any
1090
try:
1091
new_function._dbus_annotations = (
1092
dict(attribute._dbus_annotations))
1093
except AttributeError:
1094
pass
1095
# Define a creator of a function to call both the
1096
# original and alternate functions, so both the
1097
# original and alternate signals gets sent when
1098
# the function is called
1099
def fixscope(func1, func2):
1100
"""This function is a scope container to pass
1101
func1 and func2 to the "call_both" function
1102
outside of its arguments"""
1103
def call_both(*args, **kwargs):
1104
"""This function will emit two D-Bus
1105
signals by calling func1 and func2"""
1106
func1(*args, **kwargs)
1107
func2(*args, **kwargs)
1108
return call_both
1109
# Create the "call_both" function and add it to
1110
# the class
1111
attr[attrname] = fixscope(attribute, new_function)
1112
# Is this a D-Bus method?
1113
elif getattr(attribute, "_dbus_is_method", False):
1114
# Create a new, but exactly alike, function
1115
# object. Decorate it to be a new D-Bus method
1116
# with the alternate D-Bus interface name. Add it
1117
# to the class.
1118
attr[attrname] = (dbus.service.method
1119
(alt_interface,
1120
attribute._dbus_in_signature,
1121
attribute._dbus_out_signature)
1122
(types.FunctionType
1123
(attribute.func_code,
1124
attribute.func_globals,
1125
attribute.func_name,
1126
attribute.func_defaults,
1127
attribute.func_closure)))
1128
# Copy annotations, if any
1129
try:
1130
attr[attrname]._dbus_annotations = (
1131
dict(attribute._dbus_annotations))
1132
except AttributeError:
1133
pass
1134
# Is this a D-Bus property?
1135
elif getattr(attribute, "_dbus_is_property", False):
1136
# Create a new, but exactly alike, function
1137
# object, and decorate it to be a new D-Bus
1138
# property with the alternate D-Bus interface
1139
# name. Add it to the class.
1140
attr[attrname] = (dbus_service_property
1141
(alt_interface,
1142
attribute._dbus_signature,
1143
attribute._dbus_access,
1144
attribute
1145
._dbus_get_args_options
1146
["byte_arrays"])
1147
(types.FunctionType
1148
(attribute.func_code,
1149
attribute.func_globals,
1150
attribute.func_name,
1151
attribute.func_defaults,
1152
attribute.func_closure)))
1153
# Copy annotations, if any
1154
try:
1155
attr[attrname]._dbus_annotations = (
1156
dict(attribute._dbus_annotations))
1157
except AttributeError:
1158
pass
1159
# Is this a D-Bus interface?
1160
elif getattr(attribute, "_dbus_is_interface", False):
1161
# Create a new, but exactly alike, function
1162
# object. Decorate it to be a new D-Bus interface
1163
# with the alternate D-Bus interface name. Add it
1164
# to the class.
1165
attr[attrname] = (dbus_interface_annotations
1166
(alt_interface)
1167
(types.FunctionType
1168
(attribute.func_code,
1169
attribute.func_globals,
1170
attribute.func_name,
1171
attribute.func_defaults,
1172
attribute.func_closure)))
1173
if deprecate:
1174
# Deprecate all alternate interfaces
1175
iname="_AlternateDBusNames_interface_annotation{0}"
1176
for interface_name in interface_names:
1177
@dbus_interface_annotations(interface_name)
1178
def func(self):
1179
return { "org.freedesktop.DBus.Deprecated":
1180
"true" }
1181
# Find an unused name
1182
for aname in (iname.format(i)
1183
for i in itertools.count()):
1184
if aname not in attr:
1185
attr[aname] = func
1186
break
1187
if interface_names:
1188
# Replace the class with a new subclass of it with
1189
# methods, signals, etc. as created above.
1190
cls = type(b"{0}Alternate".format(cls.__name__),
1191
(cls,), attr)
1192
return cls
1193
return wrapper
1194
1195
1196
@alternate_dbus_interfaces({"se.recompile.Mandos":
1197
"se.bsnet.fukt.Mandos"})
669
1198
class ClientDBus(Client, DBusObjectWithProperties):
670
1199
"""A Client class using D-Bus
671
1200
673
1202
dbus_object_path: dbus.ObjectPath
674
1203
bus: dbus.SystemBus()
675
1204
"""
1205
1206
runtime_expansions = (Client.runtime_expansions
1207
+ ("dbus_object_path",))
1208
676
1209
# dbus.service.Object doesn't use super(), so we can't either.
677
1210
678
1211
def __init__(self, bus = None, *args, **kwargs):
680
1213
Client.__init__(self, *args, **kwargs)
681
1214
# Only now, when this client is initialized, can it show up on
682
1215
# the D-Bus
1216
client_object_name = unicode(self.name).translate(
1217
{ord("."): ord("_"),
1218
ord("-"): ord("_")})
683
1219
self.dbus_object_path = (dbus.ObjectPath
684
(u"/clients/"
685
+ self.name.replace(u".", u"_")))
1220
("/clients/" + client_object_name))
686
1221
DBusObjectWithProperties.__init__(self, self.bus,
687
1222
self.dbus_object_path)
688
1223
689
@staticmethod
690
def _datetime_to_dbus(dt, variant_level=0):
691
"""Convert a UTC datetime.datetime() to a D-Bus type."""
692
return dbus.String(dt.isoformat(),
693
variant_level=variant_level)
694
695
def enable(self):
696
oldstate = getattr(self, u"enabled", False)
697
r = Client.enable(self)
698
if oldstate != self.enabled:
699
# Emit D-Bus signals
700
self.PropertyChanged(dbus.String(u"enabled"),
701
dbus.Boolean(True, variant_level=1))
702
self.PropertyChanged(
703
dbus.String(u"last_enabled"),
704
self._datetime_to_dbus(self.last_enabled,
705
variant_level=1))
706
return r
707
708
def disable(self, signal = True):
709
oldstate = getattr(self, u"enabled", False)
710
r = Client.disable(self)
711
if signal and oldstate != self.enabled:
712
# Emit D-Bus signal
713
self.PropertyChanged(dbus.String(u"enabled"),
714
dbus.Boolean(False, variant_level=1))
715
return r
1224
def notifychangeproperty(transform_func,
1225
dbus_name, type_func=lambda x: x,
1226
variant_level=1):
1227
""" Modify a variable so that it's a property which announces
1228
its changes to DBus.
1229
1230
transform_fun: Function that takes a value and a variant_level
1231
and transforms it to a D-Bus type.
1232
dbus_name: D-Bus name of the variable
1233
type_func: Function that transform the value before sending it
1234
to the D-Bus. Default: no transform
1235
variant_level: D-Bus variant level. Default: 1
1236
"""
1237
attrname = "_{0}".format(dbus_name)
1238
def setter(self, value):
1239
if hasattr(self, "dbus_object_path"):
1240
if (not hasattr(self, attrname) or
1241
type_func(getattr(self, attrname, None))
1242
!= type_func(value)):
1243
dbus_value = transform_func(type_func(value),
1244
variant_level
1245
=variant_level)
1246
self.PropertyChanged(dbus.String(dbus_name),
1247
dbus_value)
1248
setattr(self, attrname, value)
1249
1250
return property(lambda self: getattr(self, attrname), setter)
1251
1252
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1253
approvals_pending = notifychangeproperty(dbus.Boolean,
1254
"ApprovalPending",
1255
type_func = bool)
1256
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1257
last_enabled = notifychangeproperty(datetime_to_dbus,
1258
"LastEnabled")
1259
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1260
type_func = lambda checker:
1261
checker is not None)
1262
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1263
"LastCheckedOK")
1264
last_checker_status = notifychangeproperty(dbus.Int16,
1265
"LastCheckerStatus")
1266
last_approval_request = notifychangeproperty(
1267
datetime_to_dbus, "LastApprovalRequest")
1268
approved_by_default = notifychangeproperty(dbus.Boolean,
1269
"ApprovedByDefault")
1270
approval_delay = notifychangeproperty(dbus.UInt64,
1271
"ApprovalDelay",
1272
type_func =
1273
timedelta_to_milliseconds)
1274
approval_duration = notifychangeproperty(
1275
dbus.UInt64, "ApprovalDuration",
1276
type_func = timedelta_to_milliseconds)
1277
host = notifychangeproperty(dbus.String, "Host")
1278
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1279
type_func =
1280
timedelta_to_milliseconds)
1281
extended_timeout = notifychangeproperty(
1282
dbus.UInt64, "ExtendedTimeout",
1283
type_func = timedelta_to_milliseconds)
1284
interval = notifychangeproperty(dbus.UInt64,
1285
"Interval",
1286
type_func =
1287
timedelta_to_milliseconds)
1288
checker_command = notifychangeproperty(dbus.String, "Checker")
1289
1290
del notifychangeproperty
716
1291
717
1292
def __del__(self, *args, **kwargs):
718
1293
try:
719
1294
self.remove_from_connection()
720
1295
except LookupError:
721
1296
pass
722
if hasattr(DBusObjectWithProperties, u"__del__"):
1297
if hasattr(DBusObjectWithProperties, "__del__"):
723
1298
DBusObjectWithProperties.__del__(self, *args, **kwargs)
724
1299
Client.__del__(self, *args, **kwargs)
725
1300
727
1302
*args, **kwargs):
728
1303
self.checker_callback_tag = None
729
1304
self.checker = None
730
# Emit D-Bus signal
731
self.PropertyChanged(dbus.String(u"checker_running"),
732
dbus.Boolean(False, variant_level=1))
733
1305
if os.WIFEXITED(condition):
734
1306
exitstatus = os.WEXITSTATUS(condition)
735
1307
# Emit D-Bus signal
745
1317
return Client.checker_callback(self, pid, condition, command,
746
1318
*args, **kwargs)
747
1319
748
def checked_ok(self, *args, **kwargs):
749
r = Client.checked_ok(self, *args, **kwargs)
750
# Emit D-Bus signal
751
self.PropertyChanged(
752
dbus.String(u"last_checked_ok"),
753
(self._datetime_to_dbus(self.last_checked_ok,
754
variant_level=1)))
755
return r
756
757
1320
def start_checker(self, *args, **kwargs):
758
1321
old_checker = self.checker
759
1322
if self.checker is not None:
766
1329
and old_checker_pid != self.checker.pid):
767
1330
# Emit D-Bus signal
768
1331
self.CheckerStarted(self.current_checker_command)
769
self.PropertyChanged(
770
dbus.String(u"checker_running"),
771
dbus.Boolean(True, variant_level=1))
772
return r
773
774
def stop_checker(self, *args, **kwargs):
775
old_checker = getattr(self, u"checker", None)
776
r = Client.stop_checker(self, *args, **kwargs)
777
if (old_checker is not None
778
and getattr(self, u"checker", None) is None):
779
self.PropertyChanged(dbus.String(u"checker_running"),
780
dbus.Boolean(False, variant_level=1))
781
return r
782
783
## D-Bus methods & signals
784
_interface = u"se.bsnet.fukt.Mandos.Client"
785
786
# CheckedOK - method
787
@dbus.service.method(_interface)
788
def CheckedOK(self):
789
return self.checked_ok()
1332
return r
1333
1334
def _reset_approved(self):
1335
self.approved = None
1336
return False
1337
1338
def approve(self, value=True):
1339
self.approved = value
1340
gobject.timeout_add(timedelta_to_milliseconds
1341
(self.approval_duration),
1342
self._reset_approved)
1343
self.send_changedstate()
1344
1345
## D-Bus methods, signals & properties
1346
_interface = "se.recompile.Mandos.Client"
1347
1348
## Interfaces
1349
1350
@dbus_interface_annotations(_interface)
1351
def _foo(self):
1352
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1353
"false"}
1354
1355
## Signals
790
1356
791
1357
# CheckerCompleted - signal
792
@dbus.service.signal(_interface, signature=u"nxs")
1358
@dbus.service.signal(_interface, signature="nxs")
793
1359
def CheckerCompleted(self, exitcode, waitstatus, command):
794
1360
"D-Bus signal"
795
1361
pass
796
1362
797
1363
# CheckerStarted - signal
798
@dbus.service.signal(_interface, signature=u"s")
1364
@dbus.service.signal(_interface, signature="s")
799
1365
def CheckerStarted(self, command):
800
1366
"D-Bus signal"
801
1367
pass
802
1368
803
1369
# PropertyChanged - signal
804
@dbus.service.signal(_interface, signature=u"sv")
1370
@dbus.service.signal(_interface, signature="sv")
805
1371
def PropertyChanged(self, property, value):
806
1372
"D-Bus signal"
807
1373
pass
809
1375
# GotSecret - signal
810
1376
@dbus.service.signal(_interface)
811
1377
def GotSecret(self):
812
"D-Bus signal"
1378
"""D-Bus signal
1379
Is sent after a successful transfer of secret from the Mandos
1380
server to mandos-client
1381
"""
813
1382
pass
814
1383
815
1384
# Rejected - signal
816
@dbus.service.signal(_interface)
817
def Rejected(self):
1385
@dbus.service.signal(_interface, signature="s")
1386
def Rejected(self, reason):
818
1387
"D-Bus signal"
819
1388
pass
820
1389
1390
# NeedApproval - signal
1391
@dbus.service.signal(_interface, signature="tb")
1392
def NeedApproval(self, timeout, default):
1393
"D-Bus signal"
1394
return self.need_approval()
1395
1396
## Methods
1397
1398
# Approve - method
1399
@dbus.service.method(_interface, in_signature="b")
1400
def Approve(self, value):
1401
self.approve(value)
1402
1403
# CheckedOK - method
1404
@dbus.service.method(_interface)
1405
def CheckedOK(self):
1406
self.checked_ok()
1407
821
1408
# Enable - method
822
1409
@dbus.service.method(_interface)
823
1410
def Enable(self):
841
1428
def StopChecker(self):
842
1429
self.stop_checker()
843
1430
844
# name - property
845
@dbus_service_property(_interface, signature=u"s", access=u"read")
846
def name_dbus_property(self):
1431
## Properties
1432
1433
# ApprovalPending - property
1434
@dbus_service_property(_interface, signature="b", access="read")
1435
def ApprovalPending_dbus_property(self):
1436
return dbus.Boolean(bool(self.approvals_pending))
1437
1438
# ApprovedByDefault - property
1439
@dbus_service_property(_interface, signature="b",
1440
access="readwrite")
1441
def ApprovedByDefault_dbus_property(self, value=None):
1442
if value is None: # get
1443
return dbus.Boolean(self.approved_by_default)
1444
self.approved_by_default = bool(value)
1445
1446
# ApprovalDelay - property
1447
@dbus_service_property(_interface, signature="t",
1448
access="readwrite")
1449
def ApprovalDelay_dbus_property(self, value=None):
1450
if value is None: # get
1451
return dbus.UInt64(self.approval_delay_milliseconds())
1452
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1453
1454
# ApprovalDuration - property
1455
@dbus_service_property(_interface, signature="t",
1456
access="readwrite")
1457
def ApprovalDuration_dbus_property(self, value=None):
1458
if value is None: # get
1459
return dbus.UInt64(timedelta_to_milliseconds(
1460
self.approval_duration))
1461
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1462
1463
# Name - property
1464
@dbus_service_property(_interface, signature="s", access="read")
1465
def Name_dbus_property(self):
847
1466
return dbus.String(self.name)
848
1467
849
# fingerprint - property
850
@dbus_service_property(_interface, signature=u"s", access=u"read")
851
def fingerprint_dbus_property(self):
1468
# Fingerprint - property
1469
@dbus_service_property(_interface, signature="s", access="read")
1470
def Fingerprint_dbus_property(self):
852
1471
return dbus.String(self.fingerprint)
853
1472
854
# host - property
855
@dbus_service_property(_interface, signature=u"s",
856
access=u"readwrite")
857
def host_dbus_property(self, value=None):
1473
# Host - property
1474
@dbus_service_property(_interface, signature="s",
1475
access="readwrite")
1476
def Host_dbus_property(self, value=None):
858
1477
if value is None: # get
859
1478
return dbus.String(self.host)
860
self.host = value
861
# Emit D-Bus signal
862
self.PropertyChanged(dbus.String(u"host"),
863
dbus.String(value, variant_level=1))
864
865
# created - property
866
@dbus_service_property(_interface, signature=u"s", access=u"read")
867
def created_dbus_property(self):
868
return dbus.String(self._datetime_to_dbus(self.created))
869
870
# last_enabled - property
871
@dbus_service_property(_interface, signature=u"s", access=u"read")
872
def last_enabled_dbus_property(self):
873
if self.last_enabled is None:
874
return dbus.String(u"")
875
return dbus.String(self._datetime_to_dbus(self.last_enabled))
876
877
# enabled - property
878
@dbus_service_property(_interface, signature=u"b",
879
access=u"readwrite")
880
def enabled_dbus_property(self, value=None):
1479
self.host = unicode(value)
1480
1481
# Created - property
1482
@dbus_service_property(_interface, signature="s", access="read")
1483
def Created_dbus_property(self):
1484
return datetime_to_dbus(self.created)
1485
1486
# LastEnabled - property
1487
@dbus_service_property(_interface, signature="s", access="read")
1488
def LastEnabled_dbus_property(self):
1489
return datetime_to_dbus(self.last_enabled)
1490
1491
# Enabled - property
1492
@dbus_service_property(_interface, signature="b",
1493
access="readwrite")
1494
def Enabled_dbus_property(self, value=None):
881
1495
if value is None: # get
882
1496
return dbus.Boolean(self.enabled)
883
1497
if value:
885
1499
else:
886
1500
self.disable()
887
1501
888
# last_checked_ok - property
889
@dbus_service_property(_interface, signature=u"s",
890
access=u"readwrite")
891
def last_checked_ok_dbus_property(self, value=None):
1502
# LastCheckedOK - property
1503
@dbus_service_property(_interface, signature="s",
1504
access="readwrite")
1505
def LastCheckedOK_dbus_property(self, value=None):
892
1506
if value is not None:
893
1507
self.checked_ok()
894
1508
return
895
if self.last_checked_ok is None:
896
return dbus.String(u"")
897
return dbus.String(self._datetime_to_dbus(self
898
.last_checked_ok))
899
900
# timeout - property
901
@dbus_service_property(_interface, signature=u"t",
902
access=u"readwrite")
903
def timeout_dbus_property(self, value=None):
1509
return datetime_to_dbus(self.last_checked_ok)
1510
1511
# LastCheckerStatus - property
1512
@dbus_service_property(_interface, signature="n",
1513
access="read")
1514
def LastCheckerStatus_dbus_property(self):
1515
return dbus.Int16(self.last_checker_status)
1516
1517
# Expires - property
1518
@dbus_service_property(_interface, signature="s", access="read")
1519
def Expires_dbus_property(self):
1520
return datetime_to_dbus(self.expires)
1521
1522
# LastApprovalRequest - property
1523
@dbus_service_property(_interface, signature="s", access="read")
1524
def LastApprovalRequest_dbus_property(self):
1525
return datetime_to_dbus(self.last_approval_request)
1526
1527
# Timeout - property
1528
@dbus_service_property(_interface, signature="t",
1529
access="readwrite")
1530
def Timeout_dbus_property(self, value=None):
904
1531
if value is None: # get
905
1532
return dbus.UInt64(self.timeout_milliseconds())
1533
old_timeout = self.timeout
906
1534
self.timeout = datetime.timedelta(0, 0, 0, value)
907
# Emit D-Bus signal
908
self.PropertyChanged(dbus.String(u"timeout"),
909
dbus.UInt64(value, variant_level=1))
910
if getattr(self, u"disable_initiator_tag", None) is None:
911
return
912
# Reschedule timeout
913
gobject.source_remove(self.disable_initiator_tag)
914
self.disable_initiator_tag = None
915
time_to_die = (self.
916
_timedelta_to_milliseconds((self
917
.last_checked_ok
918
+ self.timeout)
919
- datetime.datetime
920
.utcnow()))
921
if time_to_die <= 0:
922
# The timeout has passed
923
self.disable()
924
else:
925
self.disable_initiator_tag = (gobject.timeout_add
926
(time_to_die, self.disable))
927
928
# interval - property
929
@dbus_service_property(_interface, signature=u"t",
930
access=u"readwrite")
931
def interval_dbus_property(self, value=None):
1535
# Reschedule disabling
1536
if self.enabled:
1537
now = datetime.datetime.utcnow()
1538
self.expires += self.timeout - old_timeout
1539
if self.expires <= now:
1540
# The timeout has passed
1541
self.disable()
1542
else:
1543
if (getattr(self, "disable_initiator_tag", None)
1544
is None):
1545
return
1546
gobject.source_remove(self.disable_initiator_tag)
1547
self.disable_initiator_tag = (
1548
gobject.timeout_add(
1549
timedelta_to_milliseconds(self.expires - now),
1550
self.disable))
1551
1552
# ExtendedTimeout - property
1553
@dbus_service_property(_interface, signature="t",
1554
access="readwrite")
1555
def ExtendedTimeout_dbus_property(self, value=None):
1556
if value is None: # get
1557
return dbus.UInt64(self.extended_timeout_milliseconds())
1558
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1559
1560
# Interval - property
1561
@dbus_service_property(_interface, signature="t",
1562
access="readwrite")
1563
def Interval_dbus_property(self, value=None):
932
1564
if value is None: # get
933
1565
return dbus.UInt64(self.interval_milliseconds())
934
1566
self.interval = datetime.timedelta(0, 0, 0, value)
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"interval"),
937
dbus.UInt64(value, variant_level=1))
938
if getattr(self, u"checker_initiator_tag", None) is None:
1567
if getattr(self, "checker_initiator_tag", None) is None:
939
1568
return
940
# Reschedule checker run
941
gobject.source_remove(self.checker_initiator_tag)
942
self.checker_initiator_tag = (gobject.timeout_add
943
(value, self.start_checker))
944
self.start_checker() # Start one now, too
945
946
# checker - property
947
@dbus_service_property(_interface, signature=u"s",
948
access=u"readwrite")
949
def checker_dbus_property(self, value=None):
1569
if self.enabled:
1570
# Reschedule checker run
1571
gobject.source_remove(self.checker_initiator_tag)
1572
self.checker_initiator_tag = (gobject.timeout_add
1573
(value, self.start_checker))
1574
self.start_checker() # Start one now, too
1575
1576
# Checker - property
1577
@dbus_service_property(_interface, signature="s",
1578
access="readwrite")
1579
def Checker_dbus_property(self, value=None):
950
1580
if value is None: # get
951
1581
return dbus.String(self.checker_command)
952
self.checker_command = value
953
# Emit D-Bus signal
954
self.PropertyChanged(dbus.String(u"checker"),
955
dbus.String(self.checker_command,
956
variant_level=1))
1582
self.checker_command = unicode(value)
957
1583
958
# checker_running - property
959
@dbus_service_property(_interface, signature=u"b",
960
access=u"readwrite")
961
def checker_running_dbus_property(self, value=None):
1584
# CheckerRunning - property
1585
@dbus_service_property(_interface, signature="b",
1586
access="readwrite")
1587
def CheckerRunning_dbus_property(self, value=None):
962
1588
if value is None: # get
963
1589
return dbus.Boolean(self.checker is not None)
964
1590
if value:
966
1592
else:
967
1593
self.stop_checker()
968
1594
969
# object_path - property
970
@dbus_service_property(_interface, signature=u"o", access=u"read")
971
def object_path_dbus_property(self):
1595
# ObjectPath - property
1596
@dbus_service_property(_interface, signature="o", access="read")
1597
def ObjectPath_dbus_property(self):
972
1598
return self.dbus_object_path # is already a dbus.ObjectPath
973
1599
974
# secret = property
975
@dbus_service_property(_interface, signature=u"ay",
976
access=u"write", byte_arrays=True)
977
def secret_dbus_property(self, value):
1600
# Secret = property
1601
@dbus_service_property(_interface, signature="ay",
1602
access="write", byte_arrays=True)
1603
def Secret_dbus_property(self, value):
978
1604
self.secret = str(value)
979
1605
980
1606
del _interface
981
1607
982
1608
1609
class ProxyClient(object):
1610
def __init__(self, child_pipe, fpr, address):
1611
self._pipe = child_pipe
1612
self._pipe.send(('init', fpr, address))
1613
if not self._pipe.recv():
1614
raise KeyError()
1615
1616
def __getattribute__(self, name):
1617
if name == '_pipe':
1618
return super(ProxyClient, self).__getattribute__(name)
1619
self._pipe.send(('getattr', name))
1620
data = self._pipe.recv()
1621
if data[0] == 'data':
1622
return data[1]
1623
if data[0] == 'function':
1624
def func(*args, **kwargs):
1625
self._pipe.send(('funcall', name, args, kwargs))
1626
return self._pipe.recv()[1]
1627
return func
1628
1629
def __setattr__(self, name, value):
1630
if name == '_pipe':
1631
return super(ProxyClient, self).__setattr__(name, value)
1632
self._pipe.send(('setattr', name, value))
1633
1634
983
1635
class ClientHandler(socketserver.BaseRequestHandler, object):
984
1636
"""A class to handle client connections.
985
1637
987
1639
Note: This will run in its own forked process."""
988
1640
989
1641
def handle(self):
990
logger.info(u"TCP connection from: %s",
991
unicode(self.client_address))
992
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
993
# Open IPC pipe to parent process
994
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1642
with contextlib.closing(self.server.child_pipe) as child_pipe:
1643
logger.info("TCP connection from: %s",
1644
unicode(self.client_address))
1645
logger.debug("Pipe FD: %d",
1646
self.server.child_pipe.fileno())
1647
995
1648
session = (gnutls.connection
996
1649
.ClientSession(self.request,
997
1650
gnutls.connection
998
1651
.X509Credentials()))
999
1652
1000
line = self.request.makefile().readline()
1001
logger.debug(u"Protocol version: %r", line)
1002
try:
1003
if int(line.strip().split()[0]) > 1:
1004
raise RuntimeError
1005
except (ValueError, IndexError, RuntimeError), error:
1006
logger.error(u"Unknown protocol version: %s", error)
1007
return
1008
1009
1653
# Note: gnutls.connection.X509Credentials is really a
1010
1654
# generic GnuTLS certificate credentials object so long as
1011
1655
# no X.509 keys are added to it. Therefore, we can use it
1012
1656
# here despite using OpenPGP certificates.
1013
1657
1014
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1015
# u"+AES-256-CBC", u"+SHA1",
1016
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1017
# u"+DHE-DSS"))
1658
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1659
# "+AES-256-CBC", "+SHA1",
1660
# "+COMP-NULL", "+CTYPE-OPENPGP",
1661
# "+DHE-DSS"))
1018
1662
# Use a fallback default, since this MUST be set.
1019
1663
priority = self.server.gnutls_priority
1020
1664
if priority is None:
1021
priority = u"NORMAL"
1665
priority = "NORMAL"
1022
1666
(gnutls.library.functions
1023
1667
.gnutls_priority_set_direct(session._c_object,
1024
1668
priority, None))
1025
1669
1670
# Start communication using the Mandos protocol
1671
# Get protocol number
1672
line = self.request.makefile().readline()
1673
logger.debug("Protocol version: %r", line)
1674
try:
1675
if int(line.strip().split()[0]) > 1:
1676
raise RuntimeError
1677
except (ValueError, IndexError, RuntimeError) as error:
1678
logger.error("Unknown protocol version: %s", error)
1679
return
1680
1681
# Start GnuTLS connection
1026
1682
try:
1027
1683
session.handshake()
1028
except gnutls.errors.GNUTLSError, error:
1029
logger.warning(u"Handshake failed: %s", error)
1684
except gnutls.errors.GNUTLSError as error:
1685
logger.warning("Handshake failed: %s", error)
1030
1686
# Do not run session.bye() here: the session is not
1031
1687
# established. Just abandon the request.
1032
1688
return
1033
logger.debug(u"Handshake succeeded")
1689
logger.debug("Handshake succeeded")
1690
1691
approval_required = False
1034
1692
try:
1035
fpr = self.fingerprint(self.peer_certificate(session))
1036
except (TypeError, gnutls.errors.GNUTLSError), error:
1037
logger.warning(u"Bad certificate: %s", error)
1038
session.bye()
1039
return
1040
logger.debug(u"Fingerprint: %s", fpr)
1693
try:
1694
fpr = self.fingerprint(self.peer_certificate
1695
(session))
1696
except (TypeError,
1697
gnutls.errors.GNUTLSError) as error:
1698
logger.warning("Bad certificate: %s", error)
1699
return
1700
logger.debug("Fingerprint: %s", fpr)
1701
1702
try:
1703
client = ProxyClient(child_pipe, fpr,
1704
self.client_address)
1705
except KeyError:
1706
return
1707
1708
if client.approval_delay:
1709
delay = client.approval_delay
1710
client.approvals_pending += 1
1711
approval_required = True
1712
1713
while True:
1714
if not client.enabled:
1715
logger.info("Client %s is disabled",
1716
client.name)
1717
if self.server.use_dbus:
1718
# Emit D-Bus signal
1719
client.Rejected("Disabled")
1720
return
1721
1722
if client.approved or not client.approval_delay:
1723
#We are approved or approval is disabled
1724
break
1725
elif client.approved is None:
1726
logger.info("Client %s needs approval",
1727
client.name)
1728
if self.server.use_dbus:
1729
# Emit D-Bus signal
1730
client.NeedApproval(
1731
client.approval_delay_milliseconds(),
1732
client.approved_by_default)
1733
else:
1734
logger.warning("Client %s was not approved",
1735
client.name)
1736
if self.server.use_dbus:
1737
# Emit D-Bus signal
1738
client.Rejected("Denied")
1739
return
1740
1741
#wait until timeout or approved
1742
time = datetime.datetime.now()
1743
client.changedstate.acquire()
1744
client.changedstate.wait(
1745
float(timedelta_to_milliseconds(delay)
1746
/ 1000))
1747
client.changedstate.release()
1748
time2 = datetime.datetime.now()
1749
if (time2 - time) >= delay:
1750
if not client.approved_by_default:
1751
logger.warning("Client %s timed out while"
1752
" waiting for approval",
1753
client.name)
1754
if self.server.use_dbus:
1755
# Emit D-Bus signal
1756
client.Rejected("Approval timed out")
1757
return
1758
else:
1759
break
1760
else:
1761
delay -= time2 - time
1762
1763
sent_size = 0
1764
while sent_size < len(client.secret):
1765
try:
1766
sent = session.send(client.secret[sent_size:])
1767
except gnutls.errors.GNUTLSError as error:
1768
logger.warning("gnutls send failed",
1769
exc_info=error)
1770
return
1771
logger.debug("Sent: %d, remaining: %d",
1772
sent, len(client.secret)
1773
- (sent_size + sent))
1774
sent_size += sent
1775
1776
logger.info("Sending secret to %s", client.name)
1777
# bump the timeout using extended_timeout
1778
client.bump_timeout(client.extended_timeout)
1779
if self.server.use_dbus:
1780
# Emit D-Bus signal
1781
client.GotSecret()
1041
1782
1042
for c in self.server.clients:
1043
if c.fingerprint == fpr:
1044
client = c
1045
break
1046
else:
1047
ipc.write(u"NOTFOUND %s %s\n"
1048
% (fpr, unicode(self.client_address)))
1049
session.bye()
1050
return
1051
# Have to check if client.still_valid(), since it is
1052
# possible that the client timed out while establishing
1053
# the GnuTLS session.
1054
if not client.still_valid():
1055
ipc.write(u"INVALID %s\n" % client.name)
1056
session.bye()
1057
return
1058
ipc.write(u"SENDING %s\n" % client.name)
1059
sent_size = 0
1060
while sent_size < len(client.secret):
1061
sent = session.send(client.secret[sent_size:])
1062
logger.debug(u"Sent: %d, remaining: %d",
1063
sent, len(client.secret)
1064
- (sent_size + sent))
1065
sent_size += sent
1066
session.bye()
1783
finally:
1784
if approval_required:
1785
client.approvals_pending -= 1
1786
try:
1787
session.bye()
1788
except gnutls.errors.GNUTLSError as error:
1789
logger.warning("GnuTLS bye failed",
1790
exc_info=error)
1067
1791
1068
1792
@staticmethod
1069
1793
def peer_certificate(session):
1079
1803
.gnutls_certificate_get_peers
1080
1804
(session._c_object, ctypes.byref(list_size)))
1081
1805
if not bool(cert_list) and list_size.value != 0:
1082
raise gnutls.errors.GNUTLSError(u"error getting peer"
1083
u" certificate")
1806
raise gnutls.errors.GNUTLSError("error getting peer"
1807
" certificate")
1084
1808
if list_size.value == 0:
1085
1809
return None
1086
1810
cert = cert_list[0]
1112
1836
if crtverify.value != 0:
1113
1837
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1114
1838
raise (gnutls.errors.CertificateSecurityError
1115
(u"Verify failed"))
1839
("Verify failed"))
1116
1840
# New buffer for the fingerprint
1117
1841
buf = ctypes.create_string_buffer(20)
1118
1842
buf_len = ctypes.c_size_t()
1125
1849
# Convert the buffer to a Python bytestring
1126
1850
fpr = ctypes.string_at(buf, buf_len.value)
1127
1851
# Convert the bytestring to hexadecimal notation
1128
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1852
hex_fpr = binascii.hexlify(fpr).upper()
1129
1853
return hex_fpr
1130
1854
1131
1855
1132
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1133
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1856
class MultiprocessingMixIn(object):
1857
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1858
def sub_process_main(self, request, address):
1859
try:
1860
self.finish_request(request, address)
1861
except Exception:
1862
self.handle_error(request, address)
1863
self.close_request(request)
1864
1865
def process_request(self, request, address):
1866
"""Start a new process to process the request."""
1867
proc = multiprocessing.Process(target = self.sub_process_main,
1868
args = (request, address))
1869
proc.start()
1870
return proc
1871
1872
1873
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1874
""" adds a pipe to the MixIn """
1134
1875
def process_request(self, request, client_address):
1135
1876
"""Overrides and wraps the original process_request().
1136
1877
1137
1878
This function creates a new pipe in self.pipe
1138
1879
"""
1139
self.pipe = os.pipe()
1140
super(ForkingMixInWithPipe,
1141
self).process_request(request, client_address)
1142
os.close(self.pipe[1]) # close write end
1143
self.add_pipe(self.pipe[0])
1144
def add_pipe(self, pipe):
1880
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1881
1882
proc = MultiprocessingMixIn.process_request(self, request,
1883
client_address)
1884
self.child_pipe.close()
1885
self.add_pipe(parent_pipe, proc)
1886
1887
def add_pipe(self, parent_pipe, proc):
1145
1888
"""Dummy function; override as necessary"""
1146
os.close(pipe)
1147
1148
1149
class IPv6_TCPServer(ForkingMixInWithPipe,
1889
raise NotImplementedError
1890
1891
1892
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1150
1893
socketserver.TCPServer, object):
1151
1894
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1152
1895
1156
1899
use_ipv6: Boolean; to use IPv6 or not
1157
1900
"""
1158
1901
def __init__(self, server_address, RequestHandlerClass,
1159
interface=None, use_ipv6=True):
1902
interface=None, use_ipv6=True, socketfd=None):
1903
"""If socketfd is set, use that file descriptor instead of
1904
creating a new one with socket.socket().
1905
"""
1160
1906
self.interface = interface
1161
1907
if use_ipv6:
1162
1908
self.address_family = socket.AF_INET6
1909
if socketfd is not None:
1910
# Save the file descriptor
1911
self.socketfd = socketfd
1912
# Save the original socket.socket() function
1913
self.socket_socket = socket.socket
1914
# To implement --socket, we monkey patch socket.socket.
1915
#
1916
# (When socketserver.TCPServer is a new-style class, we
1917
# could make self.socket into a property instead of monkey
1918
# patching socket.socket.)
1919
#
1920
# Create a one-time-only replacement for socket.socket()
1921
@functools.wraps(socket.socket)
1922
def socket_wrapper(*args, **kwargs):
1923
# Restore original function so subsequent calls are
1924
# not affected.
1925
socket.socket = self.socket_socket
1926
del self.socket_socket
1927
# This time only, return a new socket object from the
1928
# saved file descriptor.
1929
return socket.fromfd(self.socketfd, *args, **kwargs)
1930
# Replace socket.socket() function with wrapper
1931
socket.socket = socket_wrapper
1932
# The socketserver.TCPServer.__init__ will call
1933
# socket.socket(), which might be our replacement,
1934
# socket_wrapper(), if socketfd was set.
1163
1935
socketserver.TCPServer.__init__(self, server_address,
1164
1936
RequestHandlerClass)
1937
1165
1938
def server_bind(self):
1166
1939
"""This overrides the normal server_bind() function
1167
1940
to bind to an interface if one was specified, and also NOT to
1168
1941
bind to an address or port if they were not specified."""
1169
1942
if self.interface is not None:
1170
1943
if SO_BINDTODEVICE is None:
1171
logger.error(u"SO_BINDTODEVICE does not exist;"
1172
u" cannot bind to interface %s",
1944
logger.error("SO_BINDTODEVICE does not exist;"
1945
" cannot bind to interface %s",
1173
1946
self.interface)
1174
1947
else:
1175
1948
try:
1176
1949
self.socket.setsockopt(socket.SOL_SOCKET,
1177
1950
SO_BINDTODEVICE,
1178
1951
str(self.interface
1179
+ u'\0'))
1180
except socket.error, error:
1181
if error[0] == errno.EPERM:
1182
logger.error(u"No permission to"
1183
u" bind to interface %s",
1184
self.interface)
1185
elif error[0] == errno.ENOPROTOOPT:
1186
logger.error(u"SO_BINDTODEVICE not available;"
1187
u" cannot bind to interface %s",
1952
+ '\0'))
1953
except socket.error as error:
1954
if error.errno == errno.EPERM:
1955
logger.error("No permission to"
1956
" bind to interface %s",
1957
self.interface)
1958
elif error.errno == errno.ENOPROTOOPT:
1959
logger.error("SO_BINDTODEVICE not available;"
1960
" cannot bind to interface %s",
1961
self.interface)
1962
elif error.errno == errno.ENODEV:
1963
logger.error("Interface %s does not"
1964
" exist, cannot bind",
1188
1965
self.interface)
1189
1966
else:
1190
1967
raise
1192
1969
if self.server_address[0] or self.server_address[1]:
1193
1970
if not self.server_address[0]:
1194
1971
if self.address_family == socket.AF_INET6:
1195
any_address = u"::" # in6addr_any
1972
any_address = "::" # in6addr_any
1196
1973
else:
1197
1974
any_address = socket.INADDR_ANY
1198
1975
self.server_address = (any_address,
1221
1998
"""
1222
1999
def __init__(self, server_address, RequestHandlerClass,
1223
2000
interface=None, use_ipv6=True, clients=None,
1224
gnutls_priority=None, use_dbus=True):
2001
gnutls_priority=None, use_dbus=True, socketfd=None):
1225
2002
self.enabled = False
1226
2003
self.clients = clients
1227
2004
if self.clients is None:
1228
self.clients = set()
2005
self.clients = {}
1229
2006
self.use_dbus = use_dbus
1230
2007
self.gnutls_priority = gnutls_priority
1231
2008
IPv6_TCPServer.__init__(self, server_address,
1232
2009
RequestHandlerClass,
1233
2010
interface = interface,
1234
use_ipv6 = use_ipv6)
2011
use_ipv6 = use_ipv6,
2012
socketfd = socketfd)
1235
2013
def server_activate(self):
1236
2014
if self.enabled:
1237
2015
return socketserver.TCPServer.server_activate(self)
2016
1238
2017
def enable(self):
1239
2018
self.enabled = True
1240
def add_pipe(self, pipe):
2019
2020
def add_pipe(self, parent_pipe, proc):
1241
2021
# Call "handle_ipc" for both data and EOF events
1242
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1243
self.handle_ipc)
1244
def handle_ipc(self, source, condition, file_objects={}):
1245
condition_names = {
1246
gobject.IO_IN: u"IN", # There is data to read.
1247
gobject.IO_OUT: u"OUT", # Data can be written (without
1248
# blocking).
1249
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1250
gobject.IO_ERR: u"ERR", # Error condition.
1251
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1252
# broken, usually for pipes and
1253
# sockets).
1254
}
1255
conditions_string = ' | '.join(name
1256
for cond, name in
1257
condition_names.iteritems()
1258
if cond & condition)
1259
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1260
conditions_string)
1261
1262
# Turn the pipe file descriptor into a Python file object
1263
if source not in file_objects:
1264
file_objects[source] = os.fdopen(source, u"r", 1)
1265
1266
# Read a line from the file object
1267
cmdline = file_objects[source].readline()
1268
if not cmdline: # Empty line means end of file
1269
# close the IPC pipe
1270
file_objects[source].close()
1271
del file_objects[source]
1272
1273
# Stop calling this function
1274
return False
1275
1276
logger.debug(u"IPC command: %r", cmdline)
1277
1278
# Parse and act on command
1279
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1280
1281
if cmd == u"NOTFOUND":
1282
logger.warning(u"Client not found for fingerprint: %s",
1283
args)
1284
if self.use_dbus:
1285
# Emit D-Bus signal
1286
mandos_dbus_service.ClientNotFound(args)
1287
elif cmd == u"INVALID":
1288
for client in self.clients:
1289
if client.name == args:
1290
logger.warning(u"Client %s is invalid", args)
1291
if self.use_dbus:
1292
# Emit D-Bus signal
1293
client.Rejected()
1294
break
1295
else:
1296
logger.error(u"Unknown client %s is invalid", args)
1297
elif cmd == u"SENDING":
1298
for client in self.clients:
1299
if client.name == args:
1300
logger.info(u"Sending secret to %s", client.name)
1301
client.checked_ok()
1302
if self.use_dbus:
1303
# Emit D-Bus signal
1304
client.GotSecret()
1305
break
1306
else:
1307
logger.error(u"Sending secret to unknown client %s",
1308
args)
1309
else:
1310
logger.error(u"Unknown IPC command: %r", cmdline)
1311
1312
# Keep calling this function
2022
gobject.io_add_watch(parent_pipe.fileno(),
2023
gobject.IO_IN | gobject.IO_HUP,
2024
functools.partial(self.handle_ipc,
2025
parent_pipe =
2026
parent_pipe,
2027
proc = proc))
2028
2029
def handle_ipc(self, source, condition, parent_pipe=None,
2030
proc = None, client_object=None):
2031
# error, or the other end of multiprocessing.Pipe has closed
2032
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2033
# Wait for other process to exit
2034
proc.join()
2035
return False
2036
2037
# Read a request from the child
2038
request = parent_pipe.recv()
2039
command = request[0]
2040
2041
if command == 'init':
2042
fpr = request[1]
2043
address = request[2]
2044
2045
for c in self.clients.itervalues():
2046
if c.fingerprint == fpr:
2047
client = c
2048
break
2049
else:
2050
logger.info("Client not found for fingerprint: %s, ad"
2051
"dress: %s", fpr, address)
2052
if self.use_dbus:
2053
# Emit D-Bus signal
2054
mandos_dbus_service.ClientNotFound(fpr,
2055
address[0])
2056
parent_pipe.send(False)
2057
return False
2058
2059
gobject.io_add_watch(parent_pipe.fileno(),
2060
gobject.IO_IN | gobject.IO_HUP,
2061
functools.partial(self.handle_ipc,
2062
parent_pipe =
2063
parent_pipe,
2064
proc = proc,
2065
client_object =
2066
client))
2067
parent_pipe.send(True)
2068
# remove the old hook in favor of the new above hook on
2069
# same fileno
2070
return False
2071
if command == 'funcall':
2072
funcname = request[1]
2073
args = request[2]
2074
kwargs = request[3]
2075
2076
parent_pipe.send(('data', getattr(client_object,
2077
funcname)(*args,
2078
**kwargs)))
2079
2080
if command == 'getattr':
2081
attrname = request[1]
2082
if callable(client_object.__getattribute__(attrname)):
2083
parent_pipe.send(('function',))
2084
else:
2085
parent_pipe.send(('data', client_object
2086
.__getattribute__(attrname)))
2087
2088
if command == 'setattr':
2089
attrname = request[1]
2090
value = request[2]
2091
setattr(client_object, attrname, value)
2092
1313
2093
return True
1314
2094
1315
2095
1316
2096
def string_to_delta(interval):
1317
2097
"""Parse a string and return a datetime.timedelta
1318
2098
1319
>>> string_to_delta(u'7d')
2099
>>> string_to_delta('7d')
1320
2100
datetime.timedelta(7)
1321
>>> string_to_delta(u'60s')
2101
>>> string_to_delta('60s')
1322
2102
datetime.timedelta(0, 60)
1323
>>> string_to_delta(u'60m')
2103
>>> string_to_delta('60m')
1324
2104
datetime.timedelta(0, 3600)
1325
>>> string_to_delta(u'24h')
2105
>>> string_to_delta('24h')
1326
2106
datetime.timedelta(1)
1327
>>> string_to_delta(u'1w')
2107
>>> string_to_delta('1w')
1328
2108
datetime.timedelta(7)
1329
>>> string_to_delta(u'5m 30s')
2109
>>> string_to_delta('5m 30s')
1330
2110
datetime.timedelta(0, 330)
1331
2111
"""
1332
2112
timevalue = datetime.timedelta(0)
1334
2114
try:
1335
2115
suffix = unicode(s[-1])
1336
2116
value = int(s[:-1])
1337
if suffix == u"d":
2117
if suffix == "d":
1338
2118
delta = datetime.timedelta(value)
1339
elif suffix == u"s":
2119
elif suffix == "s":
1340
2120
delta = datetime.timedelta(0, value)
1341
elif suffix == u"m":
2121
elif suffix == "m":
1342
2122
delta = datetime.timedelta(0, 0, 0, 0, value)
1343
elif suffix == u"h":
2123
elif suffix == "h":
1344
2124
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1345
elif suffix == u"w":
2125
elif suffix == "w":
1346
2126
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1347
2127
else:
1348
raise ValueError
1349
except (ValueError, IndexError):
1350
raise ValueError
2128
raise ValueError("Unknown suffix {0!r}"
2129
.format(suffix))
2130
except (ValueError, IndexError) as e:
2131
raise ValueError(*(e.args))
1351
2132
timevalue += delta
1352
2133
return timevalue
1353
2134
1354
2135
1355
def if_nametoindex(interface):
1356
"""Call the C function if_nametoindex(), or equivalent
1357
1358
Note: This function cannot accept a unicode string."""
1359
global if_nametoindex
1360
try:
1361
if_nametoindex = (ctypes.cdll.LoadLibrary
1362
(ctypes.util.find_library(u"c"))
1363
.if_nametoindex)
1364
except (OSError, AttributeError):
1365
logger.warning(u"Doing if_nametoindex the hard way")
1366
def if_nametoindex(interface):
1367
"Get an interface index the hard way, i.e. using fcntl()"
1368
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1369
with closing(socket.socket()) as s:
1370
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1371
struct.pack(str(u"16s16x"),
1372
interface))
1373
interface_index = struct.unpack(str(u"I"),
1374
ifreq[16:20])[0]
1375
return interface_index
1376
return if_nametoindex(interface)
1377
1378
1379
2136
def daemon(nochdir = False, noclose = False):
1380
2137
"""See daemon(3). Standard BSD Unix function.
1381
2138
1384
2141
sys.exit()
1385
2142
os.setsid()
1386
2143
if not nochdir:
1387
os.chdir(u"/")
2144
os.chdir("/")
1388
2145
if os.fork():
1389
2146
sys.exit()
1390
2147
if not noclose:
1391
2148
# Close all standard open file descriptors
1392
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2149
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1393
2150
if not stat.S_ISCHR(os.fstat(null).st_mode):
1394
2151
raise OSError(errno.ENODEV,
1395
u"%s not a character device"
1396
% os.path.devnull)
2152
"{0} not a character device"
2153
.format(os.devnull))
1397
2154
os.dup2(null, sys.stdin.fileno())
1398
2155
os.dup2(null, sys.stdout.fileno())
1399
2156
os.dup2(null, sys.stderr.fileno())
1406
2163
##################################################################
1407
2164
# Parsing of options, both command line and config file
1408
2165
1409
parser = optparse.OptionParser(version = "%%prog %s" % version)
1410
parser.add_option("-i", u"--interface", type=u"string",
1411
metavar="IF", help=u"Bind to interface IF")
1412
parser.add_option("-a", u"--address", type=u"string",
1413
help=u"Address to listen for requests on")
1414
parser.add_option("-p", u"--port", type=u"int",
1415
help=u"Port number to receive requests on")
1416
parser.add_option("--check", action=u"store_true",
1417
help=u"Run self-test")
1418
parser.add_option("--debug", action=u"store_true",
1419
help=u"Debug mode; run in foreground and log to"
1420
u" terminal")
1421
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1422
u" priority string (see GnuTLS documentation)")
1423
parser.add_option("--servicename", type=u"string",
1424
metavar=u"NAME", help=u"Zeroconf service name")
1425
parser.add_option("--configdir", type=u"string",
1426
default=u"/etc/mandos", metavar=u"DIR",
1427
help=u"Directory to search for configuration"
1428
u" files")
1429
parser.add_option("--no-dbus", action=u"store_false",
1430
dest=u"use_dbus", help=u"Do not provide D-Bus"
1431
u" system bus interface")
1432
parser.add_option("--no-ipv6", action=u"store_false",
1433
dest=u"use_ipv6", help=u"Do not use IPv6")
1434
options = parser.parse_args()[0]
2166
parser = argparse.ArgumentParser()
2167
parser.add_argument("-v", "--version", action="version",
2168
version = "%(prog)s {0}".format(version),
2169
help="show version number and exit")
2170
parser.add_argument("-i", "--interface", metavar="IF",
2171
help="Bind to interface IF")
2172
parser.add_argument("-a", "--address",
2173
help="Address to listen for requests on")
2174
parser.add_argument("-p", "--port", type=int,
2175
help="Port number to receive requests on")
2176
parser.add_argument("--check", action="store_true",
2177
help="Run self-test")
2178
parser.add_argument("--debug", action="store_true",
2179
help="Debug mode; run in foreground and log"
2180
" to terminal")
2181
parser.add_argument("--debuglevel", metavar="LEVEL",
2182
help="Debug level for stdout output")
2183
parser.add_argument("--priority", help="GnuTLS"
2184
" priority string (see GnuTLS documentation)")
2185
parser.add_argument("--servicename",
2186
metavar="NAME", help="Zeroconf service name")
2187
parser.add_argument("--configdir",
2188
default="/etc/mandos", metavar="DIR",
2189
help="Directory to search for configuration"
2190
" files")
2191
parser.add_argument("--no-dbus", action="store_false",
2192
dest="use_dbus", help="Do not provide D-Bus"
2193
" system bus interface")
2194
parser.add_argument("--no-ipv6", action="store_false",
2195
dest="use_ipv6", help="Do not use IPv6")
2196
parser.add_argument("--no-restore", action="store_false",
2197
dest="restore", help="Do not restore stored"
2198
" state")
2199
parser.add_argument("--socket", type=int,
2200
help="Specify a file descriptor to a network"
2201
" socket to use instead of creating one")
2202
parser.add_argument("--statedir", metavar="DIR",
2203
help="Directory to save/restore state in")
2204
2205
options = parser.parse_args()
1435
2206
1436
2207
if options.check:
1437
2208
import doctest
1439
2210
sys.exit()
1440
2211
1441
2212
# Default values for config file for server-global settings
1442
server_defaults = { u"interface": u"",
1443
u"address": u"",
1444
u"port": u"",
1445
u"debug": u"False",
1446
u"priority":
1447
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1448
u"servicename": u"Mandos",
1449
u"use_dbus": u"True",
1450
u"use_ipv6": u"True",
2213
server_defaults = { "interface": "",
2214
"address": "",
2215
"port": "",
2216
"debug": "False",
2217
"priority":
2218
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2219
"servicename": "Mandos",
2220
"use_dbus": "True",
2221
"use_ipv6": "True",
2222
"debuglevel": "",
2223
"restore": "True",
2224
"socket": "",
2225
"statedir": "/var/lib/mandos"
1451
2226
}
1452
2227
1453
2228
# Parse config file for server-global settings
1454
2229
server_config = configparser.SafeConfigParser(server_defaults)
1455
2230
del server_defaults
1456
2231
server_config.read(os.path.join(options.configdir,
1457
u"mandos.conf"))
2232
"mandos.conf"))
1458
2233
# Convert the SafeConfigParser object to a dict
1459
2234
server_settings = server_config.defaults()
1460
2235
# Use the appropriate methods on the non-string config options
1461
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1462
server_settings[option] = server_config.getboolean(u"DEFAULT",
2236
for option in ("debug", "use_dbus", "use_ipv6"):
2237
server_settings[option] = server_config.getboolean("DEFAULT",
1463
2238
option)
1464
2239
if server_settings["port"]:
1465
server_settings["port"] = server_config.getint(u"DEFAULT",
1466
u"port")
2240
server_settings["port"] = server_config.getint("DEFAULT",
2241
"port")
2242
if server_settings["socket"]:
2243
server_settings["socket"] = server_config.getint("DEFAULT",
2244
"socket")
2245
# Later, stdin will, and stdout and stderr might, be dup'ed
2246
# over with an opened os.devnull. But we don't want this to
2247
# happen with a supplied network socket.
2248
if 0 <= server_settings["socket"] <= 2:
2249
server_settings["socket"] = os.dup(server_settings
2250
["socket"])
1467
2251
del server_config
1468
2252
1469
2253
# Override the settings from the config file with command line
1470
2254
# options, if set.
1471
for option in (u"interface", u"address", u"port", u"debug",
1472
u"priority", u"servicename", u"configdir",
1473
u"use_dbus", u"use_ipv6"):
2255
for option in ("interface", "address", "port", "debug",
2256
"priority", "servicename", "configdir",
2257
"use_dbus", "use_ipv6", "debuglevel", "restore",
2258
"statedir", "socket"):
1474
2259
value = getattr(options, option)
1475
2260
if value is not None:
1476
2261
server_settings[option] = value
1484
2269
##################################################################
1485
2270
1486
2271
# For convenience
1487
debug = server_settings[u"debug"]
1488
use_dbus = server_settings[u"use_dbus"]
1489
use_ipv6 = server_settings[u"use_ipv6"]
1490
1491
if not debug:
1492
syslogger.setLevel(logging.WARNING)
1493
console.setLevel(logging.WARNING)
1494
1495
if server_settings[u"servicename"] != u"Mandos":
2272
debug = server_settings["debug"]
2273
debuglevel = server_settings["debuglevel"]
2274
use_dbus = server_settings["use_dbus"]
2275
use_ipv6 = server_settings["use_ipv6"]
2276
stored_state_path = os.path.join(server_settings["statedir"],
2277
stored_state_file)
2278
2279
if debug:
2280
initlogger(debug, logging.DEBUG)
2281
else:
2282
if not debuglevel:
2283
initlogger(debug)
2284
else:
2285
level = getattr(logging, debuglevel.upper())
2286
initlogger(debug, level)
2287
2288
if server_settings["servicename"] != "Mandos":
1496
2289
syslogger.setFormatter(logging.Formatter
1497
(u'Mandos (%s) [%%(process)d]:'
1498
u' %%(levelname)s: %%(message)s'
1499
% server_settings[u"servicename"]))
2290
('Mandos ({0}) [%(process)d]:'
2291
' %(levelname)s: %(message)s'
2292
.format(server_settings
2293
["servicename"])))
1500
2294
1501
2295
# Parse config file with clients
1502
client_defaults = { u"timeout": u"1h",
1503
u"interval": u"5m",
1504
u"checker": u"fping -q -- %%(host)s",
1505
u"host": u"",
1506
}
1507
client_config = configparser.SafeConfigParser(client_defaults)
1508
client_config.read(os.path.join(server_settings[u"configdir"],
1509
u"clients.conf"))
2296
client_config = configparser.SafeConfigParser(Client
2297
.client_defaults)
2298
client_config.read(os.path.join(server_settings["configdir"],
2299
"clients.conf"))
1510
2300
1511
2301
global mandos_dbus_service
1512
2302
mandos_dbus_service = None
1513
2303
1514
tcp_server = MandosServer((server_settings[u"address"],
1515
server_settings[u"port"]),
2304
tcp_server = MandosServer((server_settings["address"],
2305
server_settings["port"]),
1516
2306
ClientHandler,
1517
interface=server_settings[u"interface"],
2307
interface=(server_settings["interface"]
2308
or None),
1518
2309
use_ipv6=use_ipv6,
1519
2310
gnutls_priority=
1520
server_settings[u"priority"],
1521
use_dbus=use_dbus)
1522
pidfilename = u"/var/run/mandos.pid"
1523
try:
1524
pidfile = open(pidfilename, u"w")
1525
except IOError:
1526
logger.error(u"Could not open file %r", pidfilename)
2311
server_settings["priority"],
2312
use_dbus=use_dbus,
2313
socketfd=(server_settings["socket"]
2314
or None))
2315
if not debug:
2316
pidfilename = "/var/run/mandos.pid"
2317
try:
2318
pidfile = open(pidfilename, "w")
2319
except IOError as e:
2320
logger.error("Could not open file %r", pidfilename,
2321
exc_info=e)
1527
2322
1528
try:
1529
uid = pwd.getpwnam(u"_mandos").pw_uid
1530
gid = pwd.getpwnam(u"_mandos").pw_gid
1531
except KeyError:
2323
for name in ("_mandos", "mandos", "nobody"):
1532
2324
try:
1533
uid = pwd.getpwnam(u"mandos").pw_uid
1534
gid = pwd.getpwnam(u"mandos").pw_gid
2325
uid = pwd.getpwnam(name).pw_uid
2326
gid = pwd.getpwnam(name).pw_gid
2327
break
1535
2328
except KeyError:
1536
try:
1537
uid = pwd.getpwnam(u"nobody").pw_uid
1538
gid = pwd.getpwnam(u"nobody").pw_gid
1539
except KeyError:
1540
uid = 65534
1541
gid = 65534
2329
continue
2330
else:
2331
uid = 65534
2332
gid = 65534
1542
2333
try:
1543
2334
os.setgid(gid)
1544
2335
os.setuid(uid)
1545
except OSError, error:
1546
if error[0] != errno.EPERM:
2336
except OSError as error:
2337
if error.errno != errno.EPERM:
1547
2338
raise error
1548
2339
1549
# Enable all possible GnuTLS debugging
1550
2340
if debug:
2341
# Enable all possible GnuTLS debugging
2342
1551
2343
# "Use a log level over 10 to enable all debugging options."
1552
2344
# - GnuTLS manual
1553
2345
gnutls.library.functions.gnutls_global_set_log_level(11)
1554
2346
1555
2347
@gnutls.library.types.gnutls_log_func
1556
2348
def debug_gnutls(level, string):
1557
logger.debug(u"GnuTLS: %s", string[:-1])
2349
logger.debug("GnuTLS: %s", string[:-1])
1558
2350
1559
2351
(gnutls.library.functions
1560
2352
.gnutls_global_set_log_function(debug_gnutls))
2353
2354
# Redirect stdin so all checkers get /dev/null
2355
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2356
os.dup2(null, sys.stdin.fileno())
2357
if null > 2:
2358
os.close(null)
2359
2360
# Need to fork before connecting to D-Bus
2361
if not debug:
2362
# Close all input and output, do double fork, etc.
2363
daemon()
2364
2365
# multiprocessing will use threads, so before we use gobject we
2366
# need to inform gobject that threads will be used.
2367
gobject.threads_init()
1561
2368
1562
2369
global main_loop
1563
2370
# From the Avahi example code
1564
DBusGMainLoop(set_as_default=True )
2371
DBusGMainLoop(set_as_default=True)
1565
2372
main_loop = gobject.MainLoop()
1566
2373
bus = dbus.SystemBus()
1567
2374
# End of Avahi example code
1568
2375
if use_dbus:
1569
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2376
try:
2377
bus_name = dbus.service.BusName("se.recompile.Mandos",
2378
bus, do_not_queue=True)
2379
old_bus_name = (dbus.service.BusName
2380
("se.bsnet.fukt.Mandos", bus,
2381
do_not_queue=True))
2382
except dbus.exceptions.NameExistsException as e:
2383
logger.error("Disabling D-Bus:", exc_info=e)
2384
use_dbus = False
2385
server_settings["use_dbus"] = False
2386
tcp_server.use_dbus = False
1570
2387
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1571
service = AvahiService(name = server_settings[u"servicename"],
1572
servicetype = u"_mandos._tcp",
1573
protocol = protocol, bus = bus)
2388
service = AvahiServiceToSyslog(name =
2389
server_settings["servicename"],
2390
servicetype = "_mandos._tcp",
2391
protocol = protocol, bus = bus)
1574
2392
if server_settings["interface"]:
1575
2393
service.interface = (if_nametoindex
1576
(str(server_settings[u"interface"])))
2394
(str(server_settings["interface"])))
2395
2396
global multiprocessing_manager
2397
multiprocessing_manager = multiprocessing.Manager()
1577
2398
1578
2399
client_class = Client
1579
2400
if use_dbus:
1580
2401
client_class = functools.partial(ClientDBus, bus = bus)
1581
tcp_server.clients.update(set(
1582
client_class(name = section,
1583
config= dict(client_config.items(section)))
1584
for section in client_config.sections()))
2402
2403
client_settings = Client.config_parser(client_config)
2404
old_client_settings = {}
2405
clients_data = {}
2406
2407
# Get client data and settings from last running state.
2408
if server_settings["restore"]:
2409
try:
2410
with open(stored_state_path, "rb") as stored_state:
2411
clients_data, old_client_settings = (pickle.load
2412
(stored_state))
2413
os.remove(stored_state_path)
2414
except IOError as e:
2415
if e.errno == errno.ENOENT:
2416
logger.warning("Could not load persistent state: {0}"
2417
.format(os.strerror(e.errno)))
2418
else:
2419
logger.critical("Could not load persistent state:",
2420
exc_info=e)
2421
raise
2422
except EOFError as e:
2423
logger.warning("Could not load persistent state: "
2424
"EOFError:", exc_info=e)
2425
2426
with PGPEngine() as pgp:
2427
for client_name, client in clients_data.iteritems():
2428
# Decide which value to use after restoring saved state.
2429
# We have three different values: Old config file,
2430
# new config file, and saved state.
2431
# New config value takes precedence if it differs from old
2432
# config value, otherwise use saved state.
2433
for name, value in client_settings[client_name].items():
2434
try:
2435
# For each value in new config, check if it
2436
# differs from the old config value (Except for
2437
# the "secret" attribute)
2438
if (name != "secret" and
2439
value != old_client_settings[client_name]
2440
[name]):
2441
client[name] = value
2442
except KeyError:
2443
pass
2444
2445
# Clients who has passed its expire date can still be
2446
# enabled if its last checker was successful. Clients
2447
# whose checker succeeded before we stored its state is
2448
# assumed to have successfully run all checkers during
2449
# downtime.
2450
if client["enabled"]:
2451
if datetime.datetime.utcnow() >= client["expires"]:
2452
if not client["last_checked_ok"]:
2453
logger.warning(
2454
"disabling client {0} - Client never "
2455
"performed a successful checker"
2456
.format(client_name))
2457
client["enabled"] = False
2458
elif client["last_checker_status"] != 0:
2459
logger.warning(
2460
"disabling client {0} - Client "
2461
"last checker failed with error code {1}"
2462
.format(client_name,
2463
client["last_checker_status"]))
2464
client["enabled"] = False
2465
else:
2466
client["expires"] = (datetime.datetime
2467
.utcnow()
2468
+ client["timeout"])
2469
logger.debug("Last checker succeeded,"
2470
" keeping {0} enabled"
2471
.format(client_name))
2472
try:
2473
client["secret"] = (
2474
pgp.decrypt(client["encrypted_secret"],
2475
client_settings[client_name]
2476
["secret"]))
2477
except PGPError:
2478
# If decryption fails, we use secret from new settings
2479
logger.debug("Failed to decrypt {0} old secret"
2480
.format(client_name))
2481
client["secret"] = (
2482
client_settings[client_name]["secret"])
2483
2484
# Add/remove clients based on new changes made to config
2485
for client_name in (set(old_client_settings)
2486
- set(client_settings)):
2487
del clients_data[client_name]
2488
for client_name in (set(client_settings)
2489
- set(old_client_settings)):
2490
clients_data[client_name] = client_settings[client_name]
2491
2492
# Create all client objects
2493
for client_name, client in clients_data.iteritems():
2494
tcp_server.clients[client_name] = client_class(
2495
name = client_name, settings = client)
2496
1585
2497
if not tcp_server.clients:
1586
logger.warning(u"No clients defined")
1587
1588
if debug:
1589
# Redirect stdin so all checkers get /dev/null
1590
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1591
os.dup2(null, sys.stdin.fileno())
1592
if null > 2:
1593
os.close(null)
1594
else:
1595
# No console logging
1596
logger.removeHandler(console)
1597
# Close all input and output, do double fork, etc.
1598
daemon()
1599
1600
try:
1601
with closing(pidfile):
1602
pid = os.getpid()
1603
pidfile.write(str(pid) + "\n")
1604
del pidfile
1605
except IOError:
1606
logger.error(u"Could not write to file %r with PID %d",
1607
pidfilename, pid)
1608
except NameError:
1609
# "pidfile" was never created
1610
pass
1611
del pidfilename
1612
1613
def cleanup():
1614
"Cleanup function; run on exit"
1615
service.cleanup()
1616
1617
while tcp_server.clients:
1618
client = tcp_server.clients.pop()
1619
client.disable_hook = None
1620
client.disable()
1621
1622
atexit.register(cleanup)
2498
logger.warning("No clients defined")
1623
2499
1624
2500
if not debug:
1625
signal.signal(signal.SIGINT, signal.SIG_IGN)
2501
try:
2502
with pidfile:
2503
pid = os.getpid()
2504
pidfile.write(str(pid) + "\n".encode("utf-8"))
2505
del pidfile
2506
except IOError:
2507
logger.error("Could not write to file %r with PID %d",
2508
pidfilename, pid)
2509
except NameError:
2510
# "pidfile" was never created
2511
pass
2512
del pidfilename
2513
1626
2514
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1627
2515
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1628
2516
1629
2517
if use_dbus:
1630
class MandosDBusService(dbus.service.Object):
2518
@alternate_dbus_interfaces({"se.recompile.Mandos":
2519
"se.bsnet.fukt.Mandos"})
2520
class MandosDBusService(DBusObjectWithProperties):
1631
2521
"""A D-Bus proxy object"""
1632
2522
def __init__(self):
1633
dbus.service.Object.__init__(self, bus, u"/")
1634
_interface = u"se.bsnet.fukt.Mandos"
1635
1636
@dbus.service.signal(_interface, signature=u"oa{sv}")
1637
def ClientAdded(self, objpath, properties):
1638
"D-Bus signal"
1639
pass
1640
1641
@dbus.service.signal(_interface, signature=u"s")
1642
def ClientNotFound(self, fingerprint):
1643
"D-Bus signal"
1644
pass
1645
1646
@dbus.service.signal(_interface, signature=u"os")
2523
dbus.service.Object.__init__(self, bus, "/")
2524
_interface = "se.recompile.Mandos"
2525
2526
@dbus_interface_annotations(_interface)
2527
def _foo(self):
2528
return { "org.freedesktop.DBus.Property"
2529
".EmitsChangedSignal":
2530
"false"}
2531
2532
@dbus.service.signal(_interface, signature="o")
2533
def ClientAdded(self, objpath):
2534
"D-Bus signal"
2535
pass
2536
2537
@dbus.service.signal(_interface, signature="ss")
2538
def ClientNotFound(self, fingerprint, address):
2539
"D-Bus signal"
2540
pass
2541
2542
@dbus.service.signal(_interface, signature="os")
1647
2543
def ClientRemoved(self, objpath, name):
1648
2544
"D-Bus signal"
1649
2545
pass
1650
2546
1651
@dbus.service.method(_interface, out_signature=u"ao")
2547
@dbus.service.method(_interface, out_signature="ao")
1652
2548
def GetAllClients(self):
1653
2549
"D-Bus method"
1654
2550
return dbus.Array(c.dbus_object_path
1655
for c in tcp_server.clients)
2551
for c in
2552
tcp_server.clients.itervalues())
1656
2553
1657
2554
@dbus.service.method(_interface,
1658
out_signature=u"a{oa{sv}}")
2555
out_signature="a{oa{sv}}")
1659
2556
def GetAllClientsWithProperties(self):
1660
2557
"D-Bus method"
1661
2558
return dbus.Dictionary(
1662
((c.dbus_object_path, c.GetAll(u""))
1663
for c in tcp_server.clients),
1664
signature=u"oa{sv}")
2559
((c.dbus_object_path, c.GetAll(""))
2560
for c in tcp_server.clients.itervalues()),
2561
signature="oa{sv}")
1665
2562
1666
@dbus.service.method(_interface, in_signature=u"o")
2563
@dbus.service.method(_interface, in_signature="o")
1667
2564
def RemoveClient(self, object_path):
1668
2565
"D-Bus method"
1669
for c in tcp_server.clients:
2566
for c in tcp_server.clients.itervalues():
1670
2567
if c.dbus_object_path == object_path:
1671
tcp_server.clients.remove(c)
2568
del tcp_server.clients[c.name]
1672
2569
c.remove_from_connection()
1673
2570
# Don't signal anything except ClientRemoved
1674
c.disable(signal=False)
2571
c.disable(quiet=True)
1675
2572
# Emit D-Bus signal
1676
2573
self.ClientRemoved(object_path, c.name)
1677
2574
return
1678
raise KeyError
2575
raise KeyError(object_path)
1679
2576
1680
2577
del _interface
1681
2578
1682
2579
mandos_dbus_service = MandosDBusService()
1683
2580
1684
for client in tcp_server.clients:
2581
def cleanup():
2582
"Cleanup function; run on exit"
2583
service.cleanup()
2584
2585
multiprocessing.active_children()
2586
if not (tcp_server.clients or client_settings):
2587
return
2588
2589
# Store client before exiting. Secrets are encrypted with key
2590
# based on what config file has. If config file is
2591
# removed/edited, old secret will thus be unrecovable.
2592
clients = {}
2593
with PGPEngine() as pgp:
2594
for client in tcp_server.clients.itervalues():
2595
key = client_settings[client.name]["secret"]
2596
client.encrypted_secret = pgp.encrypt(client.secret,
2597
key)
2598
client_dict = {}
2599
2600
# A list of attributes that can not be pickled
2601
# + secret.
2602
exclude = set(("bus", "changedstate", "secret",
2603
"checker"))
2604
for name, typ in (inspect.getmembers
2605
(dbus.service.Object)):
2606
exclude.add(name)
2607
2608
client_dict["encrypted_secret"] = (client
2609
.encrypted_secret)
2610
for attr in client.client_structure:
2611
if attr not in exclude:
2612
client_dict[attr] = getattr(client, attr)
2613
2614
clients[client.name] = client_dict
2615
del client_settings[client.name]["secret"]
2616
2617
try:
2618
with (tempfile.NamedTemporaryFile
2619
(mode='wb', suffix=".pickle", prefix='clients-',
2620
dir=os.path.dirname(stored_state_path),
2621
delete=False)) as stored_state:
2622
pickle.dump((clients, client_settings), stored_state)
2623
tempname=stored_state.name
2624
os.rename(tempname, stored_state_path)
2625
except (IOError, OSError) as e:
2626
if not debug:
2627
try:
2628
os.remove(tempname)
2629
except NameError:
2630
pass
2631
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2632
logger.warning("Could not save persistent state: {0}"
2633
.format(os.strerror(e.errno)))
2634
else:
2635
logger.warning("Could not save persistent state:",
2636
exc_info=e)
2637
raise e
2638
2639
# Delete all clients, and settings from config
2640
while tcp_server.clients:
2641
name, client = tcp_server.clients.popitem()
2642
if use_dbus:
2643
client.remove_from_connection()
2644
# Don't signal anything except ClientRemoved
2645
client.disable(quiet=True)
2646
if use_dbus:
2647
# Emit D-Bus signal
2648
mandos_dbus_service.ClientRemoved(client
2649
.dbus_object_path,
2650
client.name)
2651
client_settings.clear()
2652
2653
atexit.register(cleanup)
2654
2655
for client in tcp_server.clients.itervalues():
1685
2656
if use_dbus:
1686
2657
# Emit D-Bus signal
1687
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1688
client.GetAll(u""))
1689
client.enable()
2658
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2659
# Need to initiate checking of clients
2660
if client.enabled:
2661
client.init_checker()
1690
2662
1691
2663
tcp_server.enable()
1692
2664
tcp_server.server_activate()
1694
2666
# Find out what port we got
1695
2667
service.port = tcp_server.socket.getsockname()[1]
1696
2668
if use_ipv6:
1697
logger.info(u"Now listening on address %r, port %d,"
1698
" flowinfo %d, scope_id %d"
1699
% tcp_server.socket.getsockname())
2669
logger.info("Now listening on address %r, port %d,"
2670
" flowinfo %d, scope_id %d",
2671
*tcp_server.socket.getsockname())
1700
2672
else: # IPv4
1701
logger.info(u"Now listening on address %r, port %d"
1702
% tcp_server.socket.getsockname())
2673
logger.info("Now listening on address %r, port %d",
2674
*tcp_server.socket.getsockname())
1703
2675
1704
2676
#service.interface = tcp_server.socket.getsockname()[3]
1705
2677
1707
2679
# From the Avahi example code
1708
2680
try:
1709
2681
service.activate()
1710
except dbus.exceptions.DBusException, error:
1711
logger.critical(u"DBusException: %s", error)
2682
except dbus.exceptions.DBusException as error:
2683
logger.critical("D-Bus Exception", exc_info=error)
2684
cleanup()
1712
2685
sys.exit(1)
1713
2686
# End of Avahi example code
1714
2687
1717
2690
(tcp_server.handle_request
1718
2691
(*args[2:], **kwargs) or True))
1719
2692
1720
logger.debug(u"Starting main loop")
2693
logger.debug("Starting main loop")
1721
2694
main_loop.run()
1722
except AvahiError, error:
1723
logger.critical(u"AvahiError: %s", error)
2695
except AvahiError as error:
2696
logger.critical("Avahi Error", exc_info=error)
2697
cleanup()
1724
2698
sys.exit(1)
1725
2699
except KeyboardInterrupt:
1726
2700
if debug:
1727
print >> sys.stderr
1728
logger.debug(u"Server received KeyboardInterrupt")
1729
logger.debug(u"Server exiting")
2701
print("", file=sys.stderr)
2702
logger.debug("Server received KeyboardInterrupt")
2703
logger.debug("Server exiting")
2704
# Must run before the D-Bus bus name gets deregistered
2705
cleanup()
1730
2706
1731
2707
if __name__ == '__main__':
1732
2708
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0