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- Committer: Teddy Hogeborn
- Date: 2009-04-17 08:26:17 UTC
- Revision ID: teddy@fukt.bsnet.se-20090417082617-eltetak5lzjyz55o
* initramfs-tools-hook: Bug fix: Add "--userid" and "--groupid" to
start of "plugin-runner.conf" file instead of
appending, to allow any preexisting options to
override.
* plugin-runner.conf: Improved wording.
start of "plugin-runner.conf" file instead of
appending, to allow any preexisting options to
override.
* plugin-runner.conf: Improved wording.
- files removed:
- DBUS-API
- debian/source
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2013 Teddy Hogeborn
15
# Copyright © 2008-2013 Björn Påhlsson
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
18
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# it under the terms of the GNU General Public License as published by
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
30
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#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
from future_builtins import *
34
from __future__ import division, with_statement, absolute_import
38
35
39
36
import SocketServer as socketserver
40
37
import socket
41
import argparse
38
import optparse
42
39
import datetime
43
40
import errno
44
41
import gnutls.crypto
58
55
import logging
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56
import logging.handlers
60
57
import pwd
61
import contextlib
58
from contextlib import closing
62
59
import struct
63
60
import fcntl
64
61
import functools
65
import cPickle as pickle
66
import multiprocessing
67
import types
68
import binascii
69
import tempfile
70
import itertools
71
import collections
72
62
73
63
import dbus
74
64
import dbus.service
77
67
from dbus.mainloop.glib import DBusGMainLoop
78
68
import ctypes
79
69
import ctypes.util
80
import xml.dom.minidom
81
import inspect
82
70
83
71
try:
84
72
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
88
76
except ImportError:
89
77
SO_BINDTODEVICE = None
90
78
91
version = "1.6.2"
92
stored_state_file = "clients.pickle"
93
94
logger = logging.getLogger()
79
80
version = "1.0.8"
81
82
logger = logging.Logger(u'mandos')
95
83
syslogger = (logging.handlers.SysLogHandler
96
84
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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)
131
logger.setLevel(level)
132
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.tempdir = tempfile.mkdtemp(prefix="mandos-")
143
self.gnupgargs = ['--batch',
144
'--home', self.tempdir,
145
'--force-mdc',
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'--quiet',
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'--no-use-agent']
148
149
def __enter__(self):
150
return self
151
152
def __exit__(self, exc_type, exc_value, traceback):
153
self._cleanup()
154
return False
155
156
def __del__(self):
157
self._cleanup()
158
159
def _cleanup(self):
160
if self.tempdir is not None:
161
# Delete contents of tempdir
162
for root, dirs, files in os.walk(self.tempdir,
163
topdown = False):
164
for filename in files:
165
os.remove(os.path.join(root, filename))
166
for dirname in dirs:
167
os.rmdir(os.path.join(root, dirname))
168
# Remove tempdir
169
os.rmdir(self.tempdir)
170
self.tempdir = None
171
172
def password_encode(self, password):
173
# Passphrase can not be empty and can not contain newlines or
174
# NUL bytes. So we prefix it and hex encode it.
175
encoded = b"mandos" + binascii.hexlify(password)
176
if len(encoded) > 2048:
177
# GnuPG can't handle long passwords, so encode differently
178
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
179
.replace(b"\n", b"\\n")
180
.replace(b"\0", b"\\x00"))
181
return encoded
182
183
def encrypt(self, data, password):
184
passphrase = self.password_encode(password)
185
with tempfile.NamedTemporaryFile(dir=self.tempdir
186
) as passfile:
187
passfile.write(passphrase)
188
passfile.flush()
189
proc = subprocess.Popen(['gpg', '--symmetric',
190
'--passphrase-file',
191
passfile.name]
192
+ self.gnupgargs,
193
stdin = subprocess.PIPE,
194
stdout = subprocess.PIPE,
195
stderr = subprocess.PIPE)
196
ciphertext, err = proc.communicate(input = data)
197
if proc.returncode != 0:
198
raise PGPError(err)
199
return ciphertext
200
201
def decrypt(self, data, password):
202
passphrase = self.password_encode(password)
203
with tempfile.NamedTemporaryFile(dir = self.tempdir
204
) as passfile:
205
passfile.write(passphrase)
206
passfile.flush()
207
proc = subprocess.Popen(['gpg', '--decrypt',
208
'--passphrase-file',
209
passfile.name]
210
+ self.gnupgargs,
211
stdin = subprocess.PIPE,
212
stdout = subprocess.PIPE,
213
stderr = subprocess.PIPE)
214
decrypted_plaintext, err = proc.communicate(input
215
= data)
216
if proc.returncode != 0:
217
raise PGPError(err)
218
return decrypted_plaintext
219
85
address = "/dev/log"))
86
syslogger.setFormatter(logging.Formatter
87
(u'Mandos [%(process)d]: %(levelname)s:'
88
u' %(message)s'))
89
logger.addHandler(syslogger)
90
91
console = logging.StreamHandler()
92
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
93
u' %(levelname)s:'
94
u' %(message)s'))
95
logger.addHandler(console)
220
96
221
97
class AvahiError(Exception):
222
98
def __init__(self, value, *args, **kwargs):
238
114
Attributes:
239
115
interface: integer; avahi.IF_UNSPEC or an interface index.
240
116
Used to optionally bind to the specified interface.
241
name: string; Example: 'Mandos'
242
type: string; Example: '_mandos._tcp'.
243
See <https://www.iana.org/assignments/service-names-port-numbers>
117
name: string; Example: u'Mandos'
118
type: string; Example: u'_mandos._tcp'.
119
See <http://www.dns-sd.org/ServiceTypes.html>
244
120
port: integer; what port to announce
245
121
TXT: list of strings; TXT record for the service
246
122
domain: string; Domain to publish on, default to .local if empty.
252
128
server: D-Bus Server
253
129
bus: dbus.SystemBus()
254
130
"""
255
256
131
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
257
132
servicetype = None, port = None, TXT = None,
258
domain = "", host = "", max_renames = 32768,
133
domain = u"", host = u"", max_renames = 32768,
259
134
protocol = avahi.PROTO_UNSPEC, bus = None):
260
135
self.interface = interface
261
136
self.name = name
270
145
self.group = None # our entry group
271
146
self.server = None
272
147
self.bus = bus
273
self.entry_group_state_changed_match = None
274
275
148
def rename(self):
276
149
"""Derived from the Avahi example code"""
277
150
if self.rename_count >= self.max_renames:
278
logger.critical("No suitable Zeroconf service name found"
279
" after %i retries, exiting.",
151
logger.critical(u"No suitable Zeroconf service name found"
152
u" after %i retries, exiting.",
280
153
self.rename_count)
281
raise AvahiServiceError("Too many renames")
282
self.name = unicode(self.server
283
.GetAlternativeServiceName(self.name))
284
logger.info("Changing Zeroconf service name to %r ...",
285
self.name)
154
raise AvahiServiceError(u"Too many renames")
155
self.name = self.server.GetAlternativeServiceName(self.name)
156
logger.info(u"Changing Zeroconf service name to %r ...",
157
unicode(self.name))
158
syslogger.setFormatter(logging.Formatter
159
(u'Mandos (%s) [%%(process)d]:'
160
u' %%(levelname)s: %%(message)s'
161
% self.name))
286
162
self.remove()
287
try:
288
self.add()
289
except dbus.exceptions.DBusException as error:
290
logger.critical("D-Bus Exception", exc_info=error)
291
self.cleanup()
292
os._exit(1)
163
self.add()
293
164
self.rename_count += 1
294
295
165
def remove(self):
296
166
"""Derived from the Avahi example code"""
297
if self.entry_group_state_changed_match is not None:
298
self.entry_group_state_changed_match.remove()
299
self.entry_group_state_changed_match = None
300
167
if self.group is not None:
301
168
self.group.Reset()
302
303
169
def add(self):
304
170
"""Derived from the Avahi example code"""
305
self.remove()
306
171
if self.group is None:
307
172
self.group = dbus.Interface(
308
173
self.bus.get_object(avahi.DBUS_NAME,
309
174
self.server.EntryGroupNew()),
310
175
avahi.DBUS_INTERFACE_ENTRY_GROUP)
311
self.entry_group_state_changed_match = (
312
self.group.connect_to_signal(
313
'StateChanged', self.entry_group_state_changed))
314
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
176
self.group.connect_to_signal('StateChanged',
177
self.entry_group_state_changed)
178
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
315
179
self.name, self.type)
316
180
self.group.AddService(
317
181
self.interface,
322
186
dbus.UInt16(self.port),
323
187
avahi.string_array_to_txt_array(self.TXT))
324
188
self.group.Commit()
325
326
189
def entry_group_state_changed(self, state, error):
327
190
"""Derived from the Avahi example code"""
328
logger.debug("Avahi entry group state change: %i", state)
191
logger.debug(u"Avahi state change: %i", state)
329
192
330
193
if state == avahi.ENTRY_GROUP_ESTABLISHED:
331
logger.debug("Zeroconf service established.")
194
logger.debug(u"Zeroconf service established.")
332
195
elif state == avahi.ENTRY_GROUP_COLLISION:
333
logger.info("Zeroconf service name collision.")
196
logger.warning(u"Zeroconf service name collision.")
334
197
self.rename()
335
198
elif state == avahi.ENTRY_GROUP_FAILURE:
336
logger.critical("Avahi: Error in group state changed %s",
199
logger.critical(u"Avahi: Error in group state changed %s",
337
200
unicode(error))
338
raise AvahiGroupError("State changed: {0!s}"
339
.format(error))
340
201
raise AvahiGroupError(u"State changed: %s"
202
% unicode(error))
341
203
def cleanup(self):
342
204
"""Derived from the Avahi example code"""
343
205
if self.group is not None:
344
try:
345
self.group.Free()
346
except (dbus.exceptions.UnknownMethodException,
347
dbus.exceptions.DBusException):
348
pass
206
self.group.Free()
349
207
self.group = None
350
self.remove()
351
352
def server_state_changed(self, state, error=None):
208
def server_state_changed(self, state):
353
209
"""Derived from the Avahi example code"""
354
logger.debug("Avahi server state change: %i", state)
355
bad_states = { avahi.SERVER_INVALID:
356
"Zeroconf server invalid",
357
avahi.SERVER_REGISTERING: None,
358
avahi.SERVER_COLLISION:
359
"Zeroconf server name collision",
360
avahi.SERVER_FAILURE:
361
"Zeroconf server failure" }
362
if state in bad_states:
363
if bad_states[state] is not None:
364
if error is None:
365
logger.error(bad_states[state])
366
else:
367
logger.error(bad_states[state] + ": %r", error)
368
self.cleanup()
210
if state == avahi.SERVER_COLLISION:
211
logger.error(u"Zeroconf server name collision")
212
self.remove()
369
213
elif state == avahi.SERVER_RUNNING:
370
214
self.add()
371
else:
372
if error is None:
373
logger.debug("Unknown state: %r", state)
374
else:
375
logger.debug("Unknown state: %r: %r", state, error)
376
377
215
def activate(self):
378
216
"""Derived from the Avahi example code"""
379
217
if self.server is None:
380
218
self.server = dbus.Interface(
381
219
self.bus.get_object(avahi.DBUS_NAME,
382
avahi.DBUS_PATH_SERVER,
383
follow_name_owner_changes=True),
220
avahi.DBUS_PATH_SERVER),
384
221
avahi.DBUS_INTERFACE_SERVER)
385
self.server.connect_to_signal("StateChanged",
222
self.server.connect_to_signal(u"StateChanged",
386
223
self.server_state_changed)
387
224
self.server_state_changed(self.server.GetState())
388
225
389
226
390
class AvahiServiceToSyslog(AvahiService):
391
def rename(self):
392
"""Add the new name to the syslog messages"""
393
ret = AvahiService.rename(self)
394
syslogger.setFormatter(logging.Formatter
395
('Mandos ({0}) [%(process)d]:'
396
' %(levelname)s: %(message)s'
397
.format(self.name)))
398
return ret
399
400
401
def timedelta_to_milliseconds(td):
402
"Convert a datetime.timedelta() to milliseconds"
403
return ((td.days * 24 * 60 * 60 * 1000)
404
+ (td.seconds * 1000)
405
+ (td.microseconds // 1000))
406
407
408
227
class Client(object):
409
228
"""A representation of a client host served by this server.
410
229
411
230
Attributes:
412
approved: bool(); 'None' if not yet approved/disapproved
413
approval_delay: datetime.timedelta(); Time to wait for approval
414
approval_duration: datetime.timedelta(); Duration of one approval
231
name: string; from the config file, used in log messages and
232
D-Bus identifiers
233
fingerprint: string (40 or 32 hexadecimal digits); used to
234
uniquely identify the client
235
secret: bytestring; sent verbatim (over TLS) to client
236
host: string; available for use by the checker command
237
created: datetime.datetime(); (UTC) object creation
238
last_enabled: datetime.datetime(); (UTC)
239
enabled: bool()
240
last_checked_ok: datetime.datetime(); (UTC) or None
241
timeout: datetime.timedelta(); How long from last_checked_ok
242
until this client is invalid
243
interval: datetime.timedelta(); How often to start a new checker
244
disable_hook: If set, called by disable() as disable_hook(self)
415
245
checker: subprocess.Popen(); a running checker process used
416
246
to see if the client lives.
417
247
'None' if no process is running.
418
checker_callback_tag: a gobject event source tag, or None
419
checker_command: string; External command which is run to check
420
if client lives. %() expansions are done at
248
checker_initiator_tag: a gobject event source tag, or None
249
disable_initiator_tag: - '' -
250
checker_callback_tag: - '' -
251
checker_command: string; External command which is run to check if
252
client lives. %() expansions are done at
421
253
runtime with vars(self) as dict, so that for
422
254
instance %(name)s can be used in the command.
423
checker_initiator_tag: a gobject event source tag, or None
424
created: datetime.datetime(); (UTC) object creation
425
client_structure: Object describing what attributes a client has
426
and is used for storing the client at exit
427
255
current_checker_command: string; current running checker_command
428
disable_initiator_tag: a gobject event source tag, or None
429
enabled: bool()
430
fingerprint: string (40 or 32 hexadecimal digits); used to
431
uniquely identify the client
432
host: string; available for use by the checker command
433
interval: datetime.timedelta(); How often to start a new checker
434
last_approval_request: datetime.datetime(); (UTC) or None
435
last_checked_ok: datetime.datetime(); (UTC) or None
436
last_checker_status: integer between 0 and 255 reflecting exit
437
status of last checker. -1 reflects crashed
438
checker, -2 means no checker completed yet.
439
last_enabled: datetime.datetime(); (UTC) or None
440
name: string; from the config file, used in log messages and
441
D-Bus identifiers
442
secret: bytestring; sent verbatim (over TLS) to client
443
timeout: datetime.timedelta(); How long from last_checked_ok
444
until this client is disabled
445
extended_timeout: extra long timeout when secret has been sent
446
runtime_expansions: Allowed attributes for runtime expansion.
447
expires: datetime.datetime(); time (UTC) when a client will be
448
disabled, or None
449
server_settings: The server_settings dict from main()
450
256
"""
451
257
452
runtime_expansions = ("approval_delay", "approval_duration",
453
"created", "enabled", "expires",
454
"fingerprint", "host", "interval",
455
"last_approval_request", "last_checked_ok",
456
"last_enabled", "name", "timeout")
457
client_defaults = { "timeout": "PT5M",
458
"extended_timeout": "PT15M",
459
"interval": "PT2M",
460
"checker": "fping -q -- %%(host)s",
461
"host": "",
462
"approval_delay": "PT0S",
463
"approval_duration": "PT1S",
464
"approved_by_default": "True",
465
"enabled": "True",
466
}
258
@staticmethod
259
def _datetime_to_milliseconds(dt):
260
"Convert a datetime.datetime() to milliseconds"
261
return ((dt.days * 24 * 60 * 60 * 1000)
262
+ (dt.seconds * 1000)
263
+ (dt.microseconds // 1000))
467
264
468
265
def timeout_milliseconds(self):
469
266
"Return the 'timeout' attribute in milliseconds"
470
return timedelta_to_milliseconds(self.timeout)
471
472
def extended_timeout_milliseconds(self):
473
"Return the 'extended_timeout' attribute in milliseconds"
474
return timedelta_to_milliseconds(self.extended_timeout)
267
return self._datetime_to_milliseconds(self.timeout)
475
268
476
269
def interval_milliseconds(self):
477
270
"Return the 'interval' attribute in milliseconds"
478
return timedelta_to_milliseconds(self.interval)
479
480
def approval_delay_milliseconds(self):
481
return timedelta_to_milliseconds(self.approval_delay)
482
483
@staticmethod
484
def config_parser(config):
485
"""Construct a new dict of client settings of this form:
486
{ client_name: {setting_name: value, ...}, ...}
487
with exceptions for any special settings as defined above.
488
NOTE: Must be a pure function. Must return the same result
489
value given the same arguments.
490
"""
491
settings = {}
492
for client_name in config.sections():
493
section = dict(config.items(client_name))
494
client = settings[client_name] = {}
495
496
client["host"] = section["host"]
497
# Reformat values from string types to Python types
498
client["approved_by_default"] = config.getboolean(
499
client_name, "approved_by_default")
500
client["enabled"] = config.getboolean(client_name,
501
"enabled")
502
503
client["fingerprint"] = (section["fingerprint"].upper()
504
.replace(" ", ""))
505
if "secret" in section:
506
client["secret"] = section["secret"].decode("base64")
507
elif "secfile" in section:
508
with open(os.path.expanduser(os.path.expandvars
509
(section["secfile"])),
510
"rb") as secfile:
511
client["secret"] = secfile.read()
512
else:
513
raise TypeError("No secret or secfile for section {0}"
514
.format(section))
515
client["timeout"] = string_to_delta(section["timeout"])
516
client["extended_timeout"] = string_to_delta(
517
section["extended_timeout"])
518
client["interval"] = string_to_delta(section["interval"])
519
client["approval_delay"] = string_to_delta(
520
section["approval_delay"])
521
client["approval_duration"] = string_to_delta(
522
section["approval_duration"])
523
client["checker_command"] = section["checker"]
524
client["last_approval_request"] = None
525
client["last_checked_ok"] = None
526
client["last_checker_status"] = -2
527
528
return settings
529
530
def __init__(self, settings, name = None, server_settings=None):
271
return self._datetime_to_milliseconds(self.interval)
272
273
def __init__(self, name = None, disable_hook=None, config=None):
274
"""Note: the 'checker' key in 'config' sets the
275
'checker_command' attribute and *not* the 'checker'
276
attribute."""
531
277
self.name = name
532
if server_settings is None:
533
server_settings = {}
534
self.server_settings = server_settings
535
# adding all client settings
536
for setting, value in settings.iteritems():
537
setattr(self, setting, value)
538
539
if self.enabled:
540
if not hasattr(self, "last_enabled"):
541
self.last_enabled = datetime.datetime.utcnow()
542
if not hasattr(self, "expires"):
543
self.expires = (datetime.datetime.utcnow()
544
+ self.timeout)
545
else:
546
self.last_enabled = None
547
self.expires = None
548
549
logger.debug("Creating client %r", self.name)
278
if config is None:
279
config = {}
280
logger.debug(u"Creating client %r", self.name)
550
281
# Uppercase and remove spaces from fingerprint for later
551
282
# comparison purposes with return value from the fingerprint()
552
283
# function
553
logger.debug(" Fingerprint: %s", self.fingerprint)
554
self.created = settings.get("created",
555
datetime.datetime.utcnow())
556
557
# attributes specific for this server instance
284
self.fingerprint = (config[u"fingerprint"].upper()
285
.replace(u" ", u""))
286
logger.debug(u" Fingerprint: %s", self.fingerprint)
287
if u"secret" in config:
288
self.secret = config[u"secret"].decode(u"base64")
289
elif u"secfile" in config:
290
with closing(open(os.path.expanduser
291
(os.path.expandvars
292
(config[u"secfile"])))) as secfile:
293
self.secret = secfile.read()
294
else:
295
raise TypeError(u"No secret or secfile for client %s"
296
% self.name)
297
self.host = config.get(u"host", u"")
298
self.created = datetime.datetime.utcnow()
299
self.enabled = False
300
self.last_enabled = None
301
self.last_checked_ok = None
302
self.timeout = string_to_delta(config[u"timeout"])
303
self.interval = string_to_delta(config[u"interval"])
304
self.disable_hook = disable_hook
558
305
self.checker = None
559
306
self.checker_initiator_tag = None
560
307
self.disable_initiator_tag = None
561
308
self.checker_callback_tag = None
309
self.checker_command = config[u"checker"]
562
310
self.current_checker_command = None
563
self.approved = None
564
self.approvals_pending = 0
565
self.changedstate = (multiprocessing_manager
566
.Condition(multiprocessing_manager
567
.Lock()))
568
self.client_structure = [attr for attr in
569
self.__dict__.iterkeys()
570
if not attr.startswith("_")]
571
self.client_structure.append("client_structure")
572
573
for name, t in inspect.getmembers(type(self),
574
lambda obj:
575
isinstance(obj,
576
property)):
577
if not name.startswith("_"):
578
self.client_structure.append(name)
579
580
# Send notice to process children that client state has changed
581
def send_changedstate(self):
582
with self.changedstate:
583
self.changedstate.notify_all()
311
self.last_connect = None
584
312
585
313
def enable(self):
586
314
"""Start this client's checker and timeout hooks"""
587
if getattr(self, "enabled", False):
315
if getattr(self, u"enabled", False):
588
316
# Already enabled
589
317
return
590
self.expires = datetime.datetime.utcnow() + self.timeout
591
self.enabled = True
592
318
self.last_enabled = datetime.datetime.utcnow()
593
self.init_checker()
594
self.send_changedstate()
595
596
def disable(self, quiet=True):
597
"""Disable this client."""
598
if not getattr(self, "enabled", False):
599
return False
600
if not quiet:
601
logger.info("Disabling client %s", self.name)
602
if getattr(self, "disable_initiator_tag", None) is not None:
603
gobject.source_remove(self.disable_initiator_tag)
604
self.disable_initiator_tag = None
605
self.expires = None
606
if getattr(self, "checker_initiator_tag", None) is not None:
607
gobject.source_remove(self.checker_initiator_tag)
608
self.checker_initiator_tag = None
609
self.stop_checker()
610
self.enabled = False
611
if not quiet:
612
self.send_changedstate()
613
# Do not run this again if called by a gobject.timeout_add
614
return False
615
616
def __del__(self):
617
self.disable()
618
619
def init_checker(self):
620
319
# Schedule a new checker to be started an 'interval' from now,
621
320
# and every interval from then on.
622
if self.checker_initiator_tag is not None:
623
gobject.source_remove(self.checker_initiator_tag)
624
321
self.checker_initiator_tag = (gobject.timeout_add
625
322
(self.interval_milliseconds(),
626
323
self.start_checker))
324
# Also start a new checker *right now*.
325
self.start_checker()
627
326
# Schedule a disable() when 'timeout' has passed
628
if self.disable_initiator_tag is not None:
629
gobject.source_remove(self.disable_initiator_tag)
630
327
self.disable_initiator_tag = (gobject.timeout_add
631
328
(self.timeout_milliseconds(),
632
329
self.disable))
633
# Also start a new checker *right now*.
634
self.start_checker()
330
self.enabled = True
331
332
def disable(self):
333
"""Disable this client."""
334
if not getattr(self, "enabled", False):
335
return False
336
logger.info(u"Disabling client %s", self.name)
337
if getattr(self, u"disable_initiator_tag", False):
338
gobject.source_remove(self.disable_initiator_tag)
339
self.disable_initiator_tag = None
340
if getattr(self, u"checker_initiator_tag", False):
341
gobject.source_remove(self.checker_initiator_tag)
342
self.checker_initiator_tag = None
343
self.stop_checker()
344
if self.disable_hook:
345
self.disable_hook(self)
346
self.enabled = False
347
# Do not run this again if called by a gobject.timeout_add
348
return False
349
350
def __del__(self):
351
self.disable_hook = None
352
self.disable()
635
353
636
354
def checker_callback(self, pid, condition, command):
637
355
"""The checker has completed, so take appropriate actions."""
638
356
self.checker_callback_tag = None
639
357
self.checker = None
640
358
if os.WIFEXITED(condition):
641
self.last_checker_status = os.WEXITSTATUS(condition)
642
if self.last_checker_status == 0:
643
logger.info("Checker for %(name)s succeeded",
359
exitstatus = os.WEXITSTATUS(condition)
360
if exitstatus == 0:
361
logger.info(u"Checker for %(name)s succeeded",
644
362
vars(self))
645
363
self.checked_ok()
646
364
else:
647
logger.info("Checker for %(name)s failed",
365
logger.info(u"Checker for %(name)s failed",
648
366
vars(self))
649
367
else:
650
self.last_checker_status = -1
651
logger.warning("Checker for %(name)s crashed?",
368
logger.warning(u"Checker for %(name)s crashed?",
652
369
vars(self))
653
370
654
371
def checked_ok(self):
655
"""Assert that the client has been seen, alive and well."""
372
"""Bump up the timeout for this client.
373
374
This should only be called when the client has been seen,
375
alive and well.
376
"""
656
377
self.last_checked_ok = datetime.datetime.utcnow()
657
self.last_checker_status = 0
658
self.bump_timeout()
659
660
def bump_timeout(self, timeout=None):
661
"""Bump up the timeout for this client."""
662
if timeout is None:
663
timeout = self.timeout
664
if self.disable_initiator_tag is not None:
665
gobject.source_remove(self.disable_initiator_tag)
666
self.disable_initiator_tag = None
667
if getattr(self, "enabled", False):
668
self.disable_initiator_tag = (gobject.timeout_add
669
(timedelta_to_milliseconds
670
(timeout), self.disable))
671
self.expires = datetime.datetime.utcnow() + timeout
672
673
def need_approval(self):
674
self.last_approval_request = datetime.datetime.utcnow()
378
gobject.source_remove(self.disable_initiator_tag)
379
self.disable_initiator_tag = (gobject.timeout_add
380
(self.timeout_milliseconds(),
381
self.disable))
675
382
676
383
def start_checker(self):
677
384
"""Start a new checker subprocess if one is not running.
679
386
If a checker already exists, leave it running and do
680
387
nothing."""
681
388
# The reason for not killing a running checker is that if we
682
# did that, and if a checker (for some reason) started running
683
# slowly and taking more than 'interval' time, then the client
684
# would inevitably timeout, since no checker would get a
685
# chance to run to completion. If we instead leave running
389
# did that, then if a checker (for some reason) started
390
# running slowly and taking more than 'interval' time, the
391
# client would inevitably timeout, since no checker would get
392
# a chance to run to completion. If we instead leave running
686
393
# checkers alone, the checker would have to take more time
687
# than 'timeout' for the client to be disabled, which is as it
688
# should be.
394
# than 'timeout' for the client to be declared invalid, which
395
# is as it should be.
689
396
690
397
# If a checker exists, make sure it is not a zombie
691
try:
398
if self.checker is not None:
692
399
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
693
except (AttributeError, OSError) as error:
694
if (isinstance(error, OSError)
695
and error.errno != errno.ECHILD):
696
raise error
697
else:
698
400
if pid:
699
logger.warning("Checker was a zombie")
401
logger.warning(u"Checker was a zombie")
700
402
gobject.source_remove(self.checker_callback_tag)
701
403
self.checker_callback(pid, status,
702
404
self.current_checker_command)
703
405
# Start a new checker if needed
704
406
if self.checker is None:
705
# Escape attributes for the shell
706
escaped_attrs = dict(
707
(attr, re.escape(unicode(getattr(self, attr))))
708
for attr in
709
self.runtime_expansions)
710
407
try:
711
command = self.checker_command % escaped_attrs
712
except TypeError as error:
713
logger.error('Could not format string "%s"',
714
self.checker_command, exc_info=error)
715
return True # Try again later
408
# In case checker_command has exactly one % operator
409
command = self.checker_command % self.host
410
except TypeError:
411
# Escape attributes for the shell
412
escaped_attrs = dict((key,
413
re.escape(unicode(str(val),
414
errors=
415
u'replace')))
416
for key, val in
417
vars(self).iteritems())
418
try:
419
command = self.checker_command % escaped_attrs
420
except TypeError, error:
421
logger.error(u'Could not format string "%s":'
422
u' %s', self.checker_command, error)
423
return True # Try again later
716
424
self.current_checker_command = command
717
425
try:
718
logger.info("Starting checker %r for %s",
426
logger.info(u"Starting checker %r for %s",
719
427
command, self.name)
720
428
# We don't need to redirect stdout and stderr, since
721
429
# in normal mode, that is already done by daemon(),
722
430
# and in debug mode we don't want to. (Stdin is
723
431
# always replaced by /dev/null.)
724
# The exception is when not debugging but nevertheless
725
# running in the foreground; use the previously
726
# created wnull.
727
popen_args = {}
728
if (not self.server_settings["debug"]
729
and self.server_settings["foreground"]):
730
popen_args.update({"stdout": wnull,
731
"stderr": wnull })
732
432
self.checker = subprocess.Popen(command,
733
433
close_fds=True,
734
shell=True, cwd="/",
735
**popen_args)
736
except OSError as error:
737
logger.error("Failed to start subprocess",
738
exc_info=error)
739
return True
740
self.checker_callback_tag = (gobject.child_watch_add
741
(self.checker.pid,
742
self.checker_callback,
743
data=command))
744
# The checker may have completed before the gobject
745
# watch was added. Check for this.
746
try:
434
shell=True, cwd=u"/")
435
self.checker_callback_tag = (gobject.child_watch_add
436
(self.checker.pid,
437
self.checker_callback,
438
data=command))
439
# The checker may have completed before the gobject
440
# watch was added. Check for this.
747
441
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
748
except OSError as error:
749
if error.errno == errno.ECHILD:
750
# This should never happen
751
logger.error("Child process vanished",
752
exc_info=error)
753
return True
754
raise
755
if pid:
756
gobject.source_remove(self.checker_callback_tag)
757
self.checker_callback(pid, status, command)
442
if pid:
443
gobject.source_remove(self.checker_callback_tag)
444
self.checker_callback(pid, status, command)
445
except OSError, error:
446
logger.error(u"Failed to start subprocess: %s",
447
error)
758
448
# Re-run this periodically if run by gobject.timeout_add
759
449
return True
760
450
763
453
if self.checker_callback_tag:
764
454
gobject.source_remove(self.checker_callback_tag)
765
455
self.checker_callback_tag = None
766
if getattr(self, "checker", None) is None:
456
if getattr(self, u"checker", None) is None:
767
457
return
768
logger.debug("Stopping checker for %(name)s", vars(self))
458
logger.debug(u"Stopping checker for %(name)s", vars(self))
769
459
try:
770
self.checker.terminate()
771
#time.sleep(0.5)
460
os.kill(self.checker.pid, signal.SIGTERM)
461
#os.sleep(0.5)
772
462
#if self.checker.poll() is None:
773
# self.checker.kill()
774
except OSError as error:
463
# os.kill(self.checker.pid, signal.SIGKILL)
464
except OSError, error:
775
465
if error.errno != errno.ESRCH: # No such process
776
466
raise
777
467
self.checker = None
778
779
780
def dbus_service_property(dbus_interface, signature="v",
781
access="readwrite", byte_arrays=False):
782
"""Decorators for marking methods of a DBusObjectWithProperties to
783
become properties on the D-Bus.
784
785
The decorated method will be called with no arguments by "Get"
786
and with one argument by "Set".
787
788
The parameters, where they are supported, are the same as
789
dbus.service.method, except there is only "signature", since the
790
type from Get() and the type sent to Set() is the same.
791
"""
792
# Encoding deeply encoded byte arrays is not supported yet by the
793
# "Set" method, so we fail early here:
794
if byte_arrays and signature != "ay":
795
raise ValueError("Byte arrays not supported for non-'ay'"
796
" signature {0!r}".format(signature))
797
def decorator(func):
798
func._dbus_is_property = True
799
func._dbus_interface = dbus_interface
800
func._dbus_signature = signature
801
func._dbus_access = access
802
func._dbus_name = func.__name__
803
if func._dbus_name.endswith("_dbus_property"):
804
func._dbus_name = func._dbus_name[:-14]
805
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
806
return func
807
return decorator
808
809
810
def dbus_interface_annotations(dbus_interface):
811
"""Decorator for marking functions returning interface annotations
812
813
Usage:
814
815
@dbus_interface_annotations("org.example.Interface")
816
def _foo(self): # Function name does not matter
817
return {"org.freedesktop.DBus.Deprecated": "true",
818
"org.freedesktop.DBus.Property.EmitsChangedSignal":
819
"false"}
820
"""
821
def decorator(func):
822
func._dbus_is_interface = True
823
func._dbus_interface = dbus_interface
824
func._dbus_name = dbus_interface
825
return func
826
return decorator
827
828
829
def dbus_annotations(annotations):
830
"""Decorator to annotate D-Bus methods, signals or properties
831
Usage:
832
833
@dbus_service_property("org.example.Interface", signature="b",
834
access="r")
835
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
836
"org.freedesktop.DBus.Property."
837
"EmitsChangedSignal": "false"})
838
def Property_dbus_property(self):
839
return dbus.Boolean(False)
840
"""
841
def decorator(func):
842
func._dbus_annotations = annotations
843
return func
844
return decorator
845
846
847
class DBusPropertyException(dbus.exceptions.DBusException):
848
"""A base class for D-Bus property-related exceptions
849
"""
850
def __unicode__(self):
851
return unicode(str(self))
852
853
854
class DBusPropertyAccessException(DBusPropertyException):
855
"""A property's access permissions disallows an operation.
856
"""
857
pass
858
859
860
class DBusPropertyNotFound(DBusPropertyException):
861
"""An attempt was made to access a non-existing property.
862
"""
863
pass
864
865
866
class DBusObjectWithProperties(dbus.service.Object):
867
"""A D-Bus object with properties.
868
869
Classes inheriting from this can use the dbus_service_property
870
decorator to expose methods as D-Bus properties. It exposes the
871
standard Get(), Set(), and GetAll() methods on the D-Bus.
872
"""
873
874
@staticmethod
875
def _is_dbus_thing(thing):
876
"""Returns a function testing if an attribute is a D-Bus thing
877
878
If called like _is_dbus_thing("method") it returns a function
879
suitable for use as predicate to inspect.getmembers().
880
"""
881
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
882
False)
883
884
def _get_all_dbus_things(self, thing):
885
"""Returns a generator of (name, attribute) pairs
886
"""
887
return ((getattr(athing.__get__(self), "_dbus_name",
888
name),
889
athing.__get__(self))
890
for cls in self.__class__.__mro__
891
for name, athing in
892
inspect.getmembers(cls,
893
self._is_dbus_thing(thing)))
894
895
def _get_dbus_property(self, interface_name, property_name):
896
"""Returns a bound method if one exists which is a D-Bus
897
property with the specified name and interface.
898
"""
899
for cls in self.__class__.__mro__:
900
for name, value in (inspect.getmembers
901
(cls,
902
self._is_dbus_thing("property"))):
903
if (value._dbus_name == property_name
904
and value._dbus_interface == interface_name):
905
return value.__get__(self)
906
907
# No such property
908
raise DBusPropertyNotFound(self.dbus_object_path + ":"
909
+ interface_name + "."
910
+ property_name)
911
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
913
out_signature="v")
914
def Get(self, interface_name, property_name):
915
"""Standard D-Bus property Get() method, see D-Bus standard.
916
"""
917
prop = self._get_dbus_property(interface_name, property_name)
918
if prop._dbus_access == "write":
919
raise DBusPropertyAccessException(property_name)
920
value = prop()
921
if not hasattr(value, "variant_level"):
922
return value
923
return type(value)(value, variant_level=value.variant_level+1)
924
925
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
926
def Set(self, interface_name, property_name, value):
927
"""Standard D-Bus property Set() method, see D-Bus standard.
928
"""
929
prop = self._get_dbus_property(interface_name, property_name)
930
if prop._dbus_access == "read":
931
raise DBusPropertyAccessException(property_name)
932
if prop._dbus_get_args_options["byte_arrays"]:
933
# The byte_arrays option is not supported yet on
934
# signatures other than "ay".
935
if prop._dbus_signature != "ay":
936
raise ValueError
937
value = dbus.ByteArray(b''.join(chr(byte)
938
for byte in value))
939
prop(value)
940
941
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
942
out_signature="a{sv}")
943
def GetAll(self, interface_name):
944
"""Standard D-Bus property GetAll() method, see D-Bus
945
standard.
946
947
Note: Will not include properties with access="write".
948
"""
949
properties = {}
950
for name, prop in self._get_all_dbus_things("property"):
951
if (interface_name
952
and interface_name != prop._dbus_interface):
953
# Interface non-empty but did not match
954
continue
955
# Ignore write-only properties
956
if prop._dbus_access == "write":
957
continue
958
value = prop()
959
if not hasattr(value, "variant_level"):
960
properties[name] = value
961
continue
962
properties[name] = type(value)(value, variant_level=
963
value.variant_level+1)
964
return dbus.Dictionary(properties, signature="sv")
965
966
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
967
out_signature="s",
968
path_keyword='object_path',
969
connection_keyword='connection')
970
def Introspect(self, object_path, connection):
971
"""Overloading of standard D-Bus method.
972
973
Inserts property tags and interface annotation tags.
974
"""
975
xmlstring = dbus.service.Object.Introspect(self, object_path,
976
connection)
977
try:
978
document = xml.dom.minidom.parseString(xmlstring)
979
def make_tag(document, name, prop):
980
e = document.createElement("property")
981
e.setAttribute("name", name)
982
e.setAttribute("type", prop._dbus_signature)
983
e.setAttribute("access", prop._dbus_access)
984
return e
985
for if_tag in document.getElementsByTagName("interface"):
986
# Add property tags
987
for tag in (make_tag(document, name, prop)
988
for name, prop
989
in self._get_all_dbus_things("property")
990
if prop._dbus_interface
991
== if_tag.getAttribute("name")):
992
if_tag.appendChild(tag)
993
# Add annotation tags
994
for typ in ("method", "signal", "property"):
995
for tag in if_tag.getElementsByTagName(typ):
996
annots = dict()
997
for name, prop in (self.
998
_get_all_dbus_things(typ)):
999
if (name == tag.getAttribute("name")
1000
and prop._dbus_interface
1001
== if_tag.getAttribute("name")):
1002
annots.update(getattr
1003
(prop,
1004
"_dbus_annotations",
1005
{}))
1006
for name, value in annots.iteritems():
1007
ann_tag = document.createElement(
1008
"annotation")
1009
ann_tag.setAttribute("name", name)
1010
ann_tag.setAttribute("value", value)
1011
tag.appendChild(ann_tag)
1012
# Add interface annotation tags
1013
for annotation, value in dict(
1014
itertools.chain.from_iterable(
1015
annotations().iteritems()
1016
for name, annotations in
1017
self._get_all_dbus_things("interface")
1018
if name == if_tag.getAttribute("name")
1019
)).iteritems():
1020
ann_tag = document.createElement("annotation")
1021
ann_tag.setAttribute("name", annotation)
1022
ann_tag.setAttribute("value", value)
1023
if_tag.appendChild(ann_tag)
1024
# Add the names to the return values for the
1025
# "org.freedesktop.DBus.Properties" methods
1026
if (if_tag.getAttribute("name")
1027
== "org.freedesktop.DBus.Properties"):
1028
for cn in if_tag.getElementsByTagName("method"):
1029
if cn.getAttribute("name") == "Get":
1030
for arg in cn.getElementsByTagName("arg"):
1031
if (arg.getAttribute("direction")
1032
== "out"):
1033
arg.setAttribute("name", "value")
1034
elif cn.getAttribute("name") == "GetAll":
1035
for arg in cn.getElementsByTagName("arg"):
1036
if (arg.getAttribute("direction")
1037
== "out"):
1038
arg.setAttribute("name", "props")
1039
xmlstring = document.toxml("utf-8")
1040
document.unlink()
1041
except (AttributeError, xml.dom.DOMException,
1042
xml.parsers.expat.ExpatError) as error:
1043
logger.error("Failed to override Introspection method",
1044
exc_info=error)
1045
return xmlstring
1046
1047
1048
def datetime_to_dbus(dt, variant_level=0):
1049
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1050
if dt is None:
1051
return dbus.String("", variant_level = variant_level)
1052
return dbus.String(dt.isoformat(),
1053
variant_level=variant_level)
1054
1055
1056
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1057
"""A class decorator; applied to a subclass of
1058
dbus.service.Object, it will add alternate D-Bus attributes with
1059
interface names according to the "alt_interface_names" mapping.
1060
Usage:
1061
1062
@alternate_dbus_interfaces({"org.example.Interface":
1063
"net.example.AlternateInterface"})
1064
class SampleDBusObject(dbus.service.Object):
1065
@dbus.service.method("org.example.Interface")
1066
def SampleDBusMethod():
1067
pass
1068
1069
The above "SampleDBusMethod" on "SampleDBusObject" will be
1070
reachable via two interfaces: "org.example.Interface" and
1071
"net.example.AlternateInterface", the latter of which will have
1072
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1073
"true", unless "deprecate" is passed with a False value.
1074
1075
This works for methods and signals, and also for D-Bus properties
1076
(from DBusObjectWithProperties) and interfaces (from the
1077
dbus_interface_annotations decorator).
1078
"""
1079
def wrapper(cls):
1080
for orig_interface_name, alt_interface_name in (
1081
alt_interface_names.iteritems()):
1082
attr = {}
1083
interface_names = set()
1084
# Go though all attributes of the class
1085
for attrname, attribute in inspect.getmembers(cls):
1086
# Ignore non-D-Bus attributes, and D-Bus attributes
1087
# with the wrong interface name
1088
if (not hasattr(attribute, "_dbus_interface")
1089
or not attribute._dbus_interface
1090
.startswith(orig_interface_name)):
1091
continue
1092
# Create an alternate D-Bus interface name based on
1093
# the current name
1094
alt_interface = (attribute._dbus_interface
1095
.replace(orig_interface_name,
1096
alt_interface_name))
1097
interface_names.add(alt_interface)
1098
# Is this a D-Bus signal?
1099
if getattr(attribute, "_dbus_is_signal", False):
1100
# Extract the original non-method undecorated
1101
# function by black magic
1102
nonmethod_func = (dict(
1103
zip(attribute.func_code.co_freevars,
1104
attribute.__closure__))["func"]
1105
.cell_contents)
1106
# Create a new, but exactly alike, function
1107
# object, and decorate it to be a new D-Bus signal
1108
# with the alternate D-Bus interface name
1109
new_function = (dbus.service.signal
1110
(alt_interface,
1111
attribute._dbus_signature)
1112
(types.FunctionType(
1113
nonmethod_func.func_code,
1114
nonmethod_func.func_globals,
1115
nonmethod_func.func_name,
1116
nonmethod_func.func_defaults,
1117
nonmethod_func.func_closure)))
1118
# Copy annotations, if any
1119
try:
1120
new_function._dbus_annotations = (
1121
dict(attribute._dbus_annotations))
1122
except AttributeError:
1123
pass
1124
# Define a creator of a function to call both the
1125
# original and alternate functions, so both the
1126
# original and alternate signals gets sent when
1127
# the function is called
1128
def fixscope(func1, func2):
1129
"""This function is a scope container to pass
1130
func1 and func2 to the "call_both" function
1131
outside of its arguments"""
1132
def call_both(*args, **kwargs):
1133
"""This function will emit two D-Bus
1134
signals by calling func1 and func2"""
1135
func1(*args, **kwargs)
1136
func2(*args, **kwargs)
1137
return call_both
1138
# Create the "call_both" function and add it to
1139
# the class
1140
attr[attrname] = fixscope(attribute, new_function)
1141
# Is this a D-Bus method?
1142
elif getattr(attribute, "_dbus_is_method", False):
1143
# Create a new, but exactly alike, function
1144
# object. Decorate it to be a new D-Bus method
1145
# with the alternate D-Bus interface name. Add it
1146
# to the class.
1147
attr[attrname] = (dbus.service.method
1148
(alt_interface,
1149
attribute._dbus_in_signature,
1150
attribute._dbus_out_signature)
1151
(types.FunctionType
1152
(attribute.func_code,
1153
attribute.func_globals,
1154
attribute.func_name,
1155
attribute.func_defaults,
1156
attribute.func_closure)))
1157
# Copy annotations, if any
1158
try:
1159
attr[attrname]._dbus_annotations = (
1160
dict(attribute._dbus_annotations))
1161
except AttributeError:
1162
pass
1163
# Is this a D-Bus property?
1164
elif getattr(attribute, "_dbus_is_property", False):
1165
# Create a new, but exactly alike, function
1166
# object, and decorate it to be a new D-Bus
1167
# property with the alternate D-Bus interface
1168
# name. Add it to the class.
1169
attr[attrname] = (dbus_service_property
1170
(alt_interface,
1171
attribute._dbus_signature,
1172
attribute._dbus_access,
1173
attribute
1174
._dbus_get_args_options
1175
["byte_arrays"])
1176
(types.FunctionType
1177
(attribute.func_code,
1178
attribute.func_globals,
1179
attribute.func_name,
1180
attribute.func_defaults,
1181
attribute.func_closure)))
1182
# Copy annotations, if any
1183
try:
1184
attr[attrname]._dbus_annotations = (
1185
dict(attribute._dbus_annotations))
1186
except AttributeError:
1187
pass
1188
# Is this a D-Bus interface?
1189
elif getattr(attribute, "_dbus_is_interface", False):
1190
# Create a new, but exactly alike, function
1191
# object. Decorate it to be a new D-Bus interface
1192
# with the alternate D-Bus interface name. Add it
1193
# to the class.
1194
attr[attrname] = (dbus_interface_annotations
1195
(alt_interface)
1196
(types.FunctionType
1197
(attribute.func_code,
1198
attribute.func_globals,
1199
attribute.func_name,
1200
attribute.func_defaults,
1201
attribute.func_closure)))
1202
if deprecate:
1203
# Deprecate all alternate interfaces
1204
iname="_AlternateDBusNames_interface_annotation{0}"
1205
for interface_name in interface_names:
1206
@dbus_interface_annotations(interface_name)
1207
def func(self):
1208
return { "org.freedesktop.DBus.Deprecated":
1209
"true" }
1210
# Find an unused name
1211
for aname in (iname.format(i)
1212
for i in itertools.count()):
1213
if aname not in attr:
1214
attr[aname] = func
1215
break
1216
if interface_names:
1217
# Replace the class with a new subclass of it with
1218
# methods, signals, etc. as created above.
1219
cls = type(b"{0}Alternate".format(cls.__name__),
1220
(cls,), attr)
1221
return cls
1222
return wrapper
1223
1224
1225
@alternate_dbus_interfaces({"se.recompile.Mandos":
1226
"se.bsnet.fukt.Mandos"})
1227
class ClientDBus(Client, DBusObjectWithProperties):
468
469
def still_valid(self):
470
"""Has the timeout not yet passed for this client?"""
471
if not getattr(self, u"enabled", False):
472
return False
473
now = datetime.datetime.utcnow()
474
if self.last_checked_ok is None:
475
return now < (self.created + self.timeout)
476
else:
477
return now < (self.last_checked_ok + self.timeout)
478
479
480
class ClientDBus(Client, dbus.service.Object):
1228
481
"""A Client class using D-Bus
1229
482
1230
483
Attributes:
1231
484
dbus_object_path: dbus.ObjectPath
1232
485
bus: dbus.SystemBus()
1233
486
"""
1234
1235
runtime_expansions = (Client.runtime_expansions
1236
+ ("dbus_object_path",))
1237
1238
487
# dbus.service.Object doesn't use super(), so we can't either.
1239
488
1240
489
def __init__(self, bus = None, *args, **kwargs):
1242
491
Client.__init__(self, *args, **kwargs)
1243
492
# Only now, when this client is initialized, can it show up on
1244
493
# the D-Bus
1245
client_object_name = unicode(self.name).translate(
1246
{ord("."): ord("_"),
1247
ord("-"): ord("_")})
1248
494
self.dbus_object_path = (dbus.ObjectPath
1249
("/clients/" + client_object_name))
1250
DBusObjectWithProperties.__init__(self, self.bus,
1251
self.dbus_object_path)
1252
1253
def notifychangeproperty(transform_func,
1254
dbus_name, type_func=lambda x: x,
1255
variant_level=1):
1256
""" Modify a variable so that it's a property which announces
1257
its changes to DBus.
1258
1259
transform_fun: Function that takes a value and a variant_level
1260
and transforms it to a D-Bus type.
1261
dbus_name: D-Bus name of the variable
1262
type_func: Function that transform the value before sending it
1263
to the D-Bus. Default: no transform
1264
variant_level: D-Bus variant level. Default: 1
1265
"""
1266
attrname = "_{0}".format(dbus_name)
1267
def setter(self, value):
1268
if hasattr(self, "dbus_object_path"):
1269
if (not hasattr(self, attrname) or
1270
type_func(getattr(self, attrname, None))
1271
!= type_func(value)):
1272
dbus_value = transform_func(type_func(value),
1273
variant_level
1274
=variant_level)
1275
self.PropertyChanged(dbus.String(dbus_name),
1276
dbus_value)
1277
setattr(self, attrname, value)
1278
1279
return property(lambda self: getattr(self, attrname), setter)
1280
1281
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1282
approvals_pending = notifychangeproperty(dbus.Boolean,
1283
"ApprovalPending",
1284
type_func = bool)
1285
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1286
last_enabled = notifychangeproperty(datetime_to_dbus,
1287
"LastEnabled")
1288
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1289
type_func = lambda checker:
1290
checker is not None)
1291
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1292
"LastCheckedOK")
1293
last_checker_status = notifychangeproperty(dbus.Int16,
1294
"LastCheckerStatus")
1295
last_approval_request = notifychangeproperty(
1296
datetime_to_dbus, "LastApprovalRequest")
1297
approved_by_default = notifychangeproperty(dbus.Boolean,
1298
"ApprovedByDefault")
1299
approval_delay = notifychangeproperty(dbus.UInt64,
1300
"ApprovalDelay",
1301
type_func =
1302
timedelta_to_milliseconds)
1303
approval_duration = notifychangeproperty(
1304
dbus.UInt64, "ApprovalDuration",
1305
type_func = timedelta_to_milliseconds)
1306
host = notifychangeproperty(dbus.String, "Host")
1307
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1308
type_func =
1309
timedelta_to_milliseconds)
1310
extended_timeout = notifychangeproperty(
1311
dbus.UInt64, "ExtendedTimeout",
1312
type_func = timedelta_to_milliseconds)
1313
interval = notifychangeproperty(dbus.UInt64,
1314
"Interval",
1315
type_func =
1316
timedelta_to_milliseconds)
1317
checker_command = notifychangeproperty(dbus.String, "Checker")
1318
1319
del notifychangeproperty
495
(u"/clients/"
496
+ self.name.replace(u".", u"_")))
497
dbus.service.Object.__init__(self, self.bus,
498
self.dbus_object_path)
499
500
@staticmethod
501
def _datetime_to_dbus(dt, variant_level=0):
502
"""Convert a UTC datetime.datetime() to a D-Bus type."""
503
return dbus.String(dt.isoformat(),
504
variant_level=variant_level)
505
506
def enable(self):
507
oldstate = getattr(self, u"enabled", False)
508
r = Client.enable(self)
509
if oldstate != self.enabled:
510
# Emit D-Bus signals
511
self.PropertyChanged(dbus.String(u"enabled"),
512
dbus.Boolean(True, variant_level=1))
513
self.PropertyChanged(
514
dbus.String(u"last_enabled"),
515
self._datetime_to_dbus(self.last_enabled,
516
variant_level=1))
517
return r
518
519
def disable(self, signal = True):
520
oldstate = getattr(self, u"enabled", False)
521
r = Client.disable(self)
522
if signal and oldstate != self.enabled:
523
# Emit D-Bus signal
524
self.PropertyChanged(dbus.String(u"enabled"),
525
dbus.Boolean(False, variant_level=1))
526
return r
1320
527
1321
528
def __del__(self, *args, **kwargs):
1322
529
try:
1323
530
self.remove_from_connection()
1324
531
except LookupError:
1325
532
pass
1326
if hasattr(DBusObjectWithProperties, "__del__"):
1327
DBusObjectWithProperties.__del__(self, *args, **kwargs)
533
if hasattr(dbus.service.Object, u"__del__"):
534
dbus.service.Object.__del__(self, *args, **kwargs)
1328
535
Client.__del__(self, *args, **kwargs)
1329
536
1330
537
def checker_callback(self, pid, condition, command,
1331
538
*args, **kwargs):
1332
539
self.checker_callback_tag = None
1333
540
self.checker = None
541
# Emit D-Bus signal
542
self.PropertyChanged(dbus.String(u"checker_running"),
543
dbus.Boolean(False, variant_level=1))
1334
544
if os.WIFEXITED(condition):
1335
545
exitstatus = os.WEXITSTATUS(condition)
1336
546
# Emit D-Bus signal
1346
556
return Client.checker_callback(self, pid, condition, command,
1347
557
*args, **kwargs)
1348
558
559
def checked_ok(self, *args, **kwargs):
560
r = Client.checked_ok(self, *args, **kwargs)
561
# Emit D-Bus signal
562
self.PropertyChanged(
563
dbus.String(u"last_checked_ok"),
564
(self._datetime_to_dbus(self.last_checked_ok,
565
variant_level=1)))
566
return r
567
1349
568
def start_checker(self, *args, **kwargs):
1350
569
old_checker = self.checker
1351
570
if self.checker is not None:
1358
577
and old_checker_pid != self.checker.pid):
1359
578
# Emit D-Bus signal
1360
579
self.CheckerStarted(self.current_checker_command)
1361
return r
1362
1363
def _reset_approved(self):
1364
self.approved = None
1365
return False
1366
1367
def approve(self, value=True):
1368
self.approved = value
1369
gobject.timeout_add(timedelta_to_milliseconds
1370
(self.approval_duration),
1371
self._reset_approved)
1372
self.send_changedstate()
1373
1374
## D-Bus methods, signals & properties
1375
_interface = "se.recompile.Mandos.Client"
1376
1377
## Interfaces
1378
1379
@dbus_interface_annotations(_interface)
1380
def _foo(self):
1381
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1382
"false"}
1383
1384
## Signals
580
self.PropertyChanged(
581
dbus.String(u"checker_running"),
582
dbus.Boolean(True, variant_level=1))
583
return r
584
585
def stop_checker(self, *args, **kwargs):
586
old_checker = getattr(self, u"checker", None)
587
r = Client.stop_checker(self, *args, **kwargs)
588
if (old_checker is not None
589
and getattr(self, u"checker", None) is None):
590
self.PropertyChanged(dbus.String(u"checker_running"),
591
dbus.Boolean(False, variant_level=1))
592
return r
593
594
## D-Bus methods & signals
595
_interface = u"se.bsnet.fukt.Mandos.Client"
596
597
# CheckedOK - method
598
@dbus.service.method(_interface)
599
def CheckedOK(self):
600
return self.checked_ok()
1385
601
1386
602
# CheckerCompleted - signal
1387
@dbus.service.signal(_interface, signature="nxs")
603
@dbus.service.signal(_interface, signature=u"nxs")
1388
604
def CheckerCompleted(self, exitcode, waitstatus, command):
1389
605
"D-Bus signal"
1390
606
pass
1391
607
1392
608
# CheckerStarted - signal
1393
@dbus.service.signal(_interface, signature="s")
609
@dbus.service.signal(_interface, signature=u"s")
1394
610
def CheckerStarted(self, command):
1395
611
"D-Bus signal"
1396
612
pass
1397
613
614
# GetAllProperties - method
615
@dbus.service.method(_interface, out_signature=u"a{sv}")
616
def GetAllProperties(self):
617
"D-Bus method"
618
return dbus.Dictionary({
619
dbus.String(u"name"):
620
dbus.String(self.name, variant_level=1),
621
dbus.String(u"fingerprint"):
622
dbus.String(self.fingerprint, variant_level=1),
623
dbus.String(u"host"):
624
dbus.String(self.host, variant_level=1),
625
dbus.String(u"created"):
626
self._datetime_to_dbus(self.created,
627
variant_level=1),
628
dbus.String(u"last_enabled"):
629
(self._datetime_to_dbus(self.last_enabled,
630
variant_level=1)
631
if self.last_enabled is not None
632
else dbus.Boolean(False, variant_level=1)),
633
dbus.String(u"enabled"):
634
dbus.Boolean(self.enabled, variant_level=1),
635
dbus.String(u"last_checked_ok"):
636
(self._datetime_to_dbus(self.last_checked_ok,
637
variant_level=1)
638
if self.last_checked_ok is not None
639
else dbus.Boolean (False, variant_level=1)),
640
dbus.String(u"timeout"):
641
dbus.UInt64(self.timeout_milliseconds(),
642
variant_level=1),
643
dbus.String(u"interval"):
644
dbus.UInt64(self.interval_milliseconds(),
645
variant_level=1),
646
dbus.String(u"checker"):
647
dbus.String(self.checker_command,
648
variant_level=1),
649
dbus.String(u"checker_running"):
650
dbus.Boolean(self.checker is not None,
651
variant_level=1),
652
dbus.String(u"object_path"):
653
dbus.ObjectPath(self.dbus_object_path,
654
variant_level=1)
655
}, signature=u"sv")
656
657
# IsStillValid - method
658
@dbus.service.method(_interface, out_signature=u"b")
659
def IsStillValid(self):
660
return self.still_valid()
661
1398
662
# PropertyChanged - signal
1399
@dbus.service.signal(_interface, signature="sv")
663
@dbus.service.signal(_interface, signature=u"sv")
1400
664
def PropertyChanged(self, property, value):
1401
665
"D-Bus signal"
1402
666
pass
1403
667
1404
# GotSecret - signal
668
# ReceivedSecret - signal
1405
669
@dbus.service.signal(_interface)
1406
def GotSecret(self):
1407
"""D-Bus signal
1408
Is sent after a successful transfer of secret from the Mandos
1409
server to mandos-client
1410
"""
670
def ReceivedSecret(self):
671
"D-Bus signal"
1411
672
pass
1412
673
1413
674
# Rejected - signal
1414
@dbus.service.signal(_interface, signature="s")
1415
def Rejected(self, reason):
675
@dbus.service.signal(_interface)
676
def Rejected(self):
1416
677
"D-Bus signal"
1417
678
pass
1418
679
1419
# NeedApproval - signal
1420
@dbus.service.signal(_interface, signature="tb")
1421
def NeedApproval(self, timeout, default):
1422
"D-Bus signal"
1423
return self.need_approval()
1424
1425
## Methods
1426
1427
# Approve - method
1428
@dbus.service.method(_interface, in_signature="b")
1429
def Approve(self, value):
1430
self.approve(value)
1431
1432
# CheckedOK - method
1433
@dbus.service.method(_interface)
1434
def CheckedOK(self):
1435
self.checked_ok()
680
# SetChecker - method
681
@dbus.service.method(_interface, in_signature=u"s")
682
def SetChecker(self, checker):
683
"D-Bus setter method"
684
self.checker_command = checker
685
# Emit D-Bus signal
686
self.PropertyChanged(dbus.String(u"checker"),
687
dbus.String(self.checker_command,
688
variant_level=1))
689
690
# SetHost - method
691
@dbus.service.method(_interface, in_signature=u"s")
692
def SetHost(self, host):
693
"D-Bus setter method"
694
self.host = host
695
# Emit D-Bus signal
696
self.PropertyChanged(dbus.String(u"host"),
697
dbus.String(self.host, variant_level=1))
698
699
# SetInterval - method
700
@dbus.service.method(_interface, in_signature=u"t")
701
def SetInterval(self, milliseconds):
702
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
703
# Emit D-Bus signal
704
self.PropertyChanged(dbus.String(u"interval"),
705
(dbus.UInt64(self.interval_milliseconds(),
706
variant_level=1)))
707
708
# SetSecret - method
709
@dbus.service.method(_interface, in_signature=u"ay",
710
byte_arrays=True)
711
def SetSecret(self, secret):
712
"D-Bus setter method"
713
self.secret = str(secret)
714
715
# SetTimeout - method
716
@dbus.service.method(_interface, in_signature=u"t")
717
def SetTimeout(self, milliseconds):
718
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
719
# Emit D-Bus signal
720
self.PropertyChanged(dbus.String(u"timeout"),
721
(dbus.UInt64(self.timeout_milliseconds(),
722
variant_level=1)))
1436
723
1437
724
# Enable - method
1438
725
@dbus.service.method(_interface)
1457
744
def StopChecker(self):
1458
745
self.stop_checker()
1459
746
1460
## Properties
1461
1462
# ApprovalPending - property
1463
@dbus_service_property(_interface, signature="b", access="read")
1464
def ApprovalPending_dbus_property(self):
1465
return dbus.Boolean(bool(self.approvals_pending))
1466
1467
# ApprovedByDefault - property
1468
@dbus_service_property(_interface, signature="b",
1469
access="readwrite")
1470
def ApprovedByDefault_dbus_property(self, value=None):
1471
if value is None: # get
1472
return dbus.Boolean(self.approved_by_default)
1473
self.approved_by_default = bool(value)
1474
1475
# ApprovalDelay - property
1476
@dbus_service_property(_interface, signature="t",
1477
access="readwrite")
1478
def ApprovalDelay_dbus_property(self, value=None):
1479
if value is None: # get
1480
return dbus.UInt64(self.approval_delay_milliseconds())
1481
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1482
1483
# ApprovalDuration - property
1484
@dbus_service_property(_interface, signature="t",
1485
access="readwrite")
1486
def ApprovalDuration_dbus_property(self, value=None):
1487
if value is None: # get
1488
return dbus.UInt64(timedelta_to_milliseconds(
1489
self.approval_duration))
1490
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1491
1492
# Name - property
1493
@dbus_service_property(_interface, signature="s", access="read")
1494
def Name_dbus_property(self):
1495
return dbus.String(self.name)
1496
1497
# Fingerprint - property
1498
@dbus_service_property(_interface, signature="s", access="read")
1499
def Fingerprint_dbus_property(self):
1500
return dbus.String(self.fingerprint)
1501
1502
# Host - property
1503
@dbus_service_property(_interface, signature="s",
1504
access="readwrite")
1505
def Host_dbus_property(self, value=None):
1506
if value is None: # get
1507
return dbus.String(self.host)
1508
self.host = unicode(value)
1509
1510
# Created - property
1511
@dbus_service_property(_interface, signature="s", access="read")
1512
def Created_dbus_property(self):
1513
return datetime_to_dbus(self.created)
1514
1515
# LastEnabled - property
1516
@dbus_service_property(_interface, signature="s", access="read")
1517
def LastEnabled_dbus_property(self):
1518
return datetime_to_dbus(self.last_enabled)
1519
1520
# Enabled - property
1521
@dbus_service_property(_interface, signature="b",
1522
access="readwrite")
1523
def Enabled_dbus_property(self, value=None):
1524
if value is None: # get
1525
return dbus.Boolean(self.enabled)
1526
if value:
1527
self.enable()
1528
else:
1529
self.disable()
1530
1531
# LastCheckedOK - property
1532
@dbus_service_property(_interface, signature="s",
1533
access="readwrite")
1534
def LastCheckedOK_dbus_property(self, value=None):
1535
if value is not None:
1536
self.checked_ok()
1537
return
1538
return datetime_to_dbus(self.last_checked_ok)
1539
1540
# LastCheckerStatus - property
1541
@dbus_service_property(_interface, signature="n",
1542
access="read")
1543
def LastCheckerStatus_dbus_property(self):
1544
return dbus.Int16(self.last_checker_status)
1545
1546
# Expires - property
1547
@dbus_service_property(_interface, signature="s", access="read")
1548
def Expires_dbus_property(self):
1549
return datetime_to_dbus(self.expires)
1550
1551
# LastApprovalRequest - property
1552
@dbus_service_property(_interface, signature="s", access="read")
1553
def LastApprovalRequest_dbus_property(self):
1554
return datetime_to_dbus(self.last_approval_request)
1555
1556
# Timeout - property
1557
@dbus_service_property(_interface, signature="t",
1558
access="readwrite")
1559
def Timeout_dbus_property(self, value=None):
1560
if value is None: # get
1561
return dbus.UInt64(self.timeout_milliseconds())
1562
old_timeout = self.timeout
1563
self.timeout = datetime.timedelta(0, 0, 0, value)
1564
# Reschedule disabling
1565
if self.enabled:
1566
now = datetime.datetime.utcnow()
1567
self.expires += self.timeout - old_timeout
1568
if self.expires <= now:
1569
# The timeout has passed
1570
self.disable()
1571
else:
1572
if (getattr(self, "disable_initiator_tag", None)
1573
is None):
1574
return
1575
gobject.source_remove(self.disable_initiator_tag)
1576
self.disable_initiator_tag = (
1577
gobject.timeout_add(
1578
timedelta_to_milliseconds(self.expires - now),
1579
self.disable))
1580
1581
# ExtendedTimeout - property
1582
@dbus_service_property(_interface, signature="t",
1583
access="readwrite")
1584
def ExtendedTimeout_dbus_property(self, value=None):
1585
if value is None: # get
1586
return dbus.UInt64(self.extended_timeout_milliseconds())
1587
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1588
1589
# Interval - property
1590
@dbus_service_property(_interface, signature="t",
1591
access="readwrite")
1592
def Interval_dbus_property(self, value=None):
1593
if value is None: # get
1594
return dbus.UInt64(self.interval_milliseconds())
1595
self.interval = datetime.timedelta(0, 0, 0, value)
1596
if getattr(self, "checker_initiator_tag", None) is None:
1597
return
1598
if self.enabled:
1599
# Reschedule checker run
1600
gobject.source_remove(self.checker_initiator_tag)
1601
self.checker_initiator_tag = (gobject.timeout_add
1602
(value, self.start_checker))
1603
self.start_checker() # Start one now, too
1604
1605
# Checker - property
1606
@dbus_service_property(_interface, signature="s",
1607
access="readwrite")
1608
def Checker_dbus_property(self, value=None):
1609
if value is None: # get
1610
return dbus.String(self.checker_command)
1611
self.checker_command = unicode(value)
1612
1613
# CheckerRunning - property
1614
@dbus_service_property(_interface, signature="b",
1615
access="readwrite")
1616
def CheckerRunning_dbus_property(self, value=None):
1617
if value is None: # get
1618
return dbus.Boolean(self.checker is not None)
1619
if value:
1620
self.start_checker()
1621
else:
1622
self.stop_checker()
1623
1624
# ObjectPath - property
1625
@dbus_service_property(_interface, signature="o", access="read")
1626
def ObjectPath_dbus_property(self):
1627
return self.dbus_object_path # is already a dbus.ObjectPath
1628
1629
# Secret = property
1630
@dbus_service_property(_interface, signature="ay",
1631
access="write", byte_arrays=True)
1632
def Secret_dbus_property(self, value):
1633
self.secret = str(value)
1634
1635
747
del _interface
1636
748
1637
749
1638
class ProxyClient(object):
1639
def __init__(self, child_pipe, fpr, address):
1640
self._pipe = child_pipe
1641
self._pipe.send(('init', fpr, address))
1642
if not self._pipe.recv():
1643
raise KeyError()
1644
1645
def __getattribute__(self, name):
1646
if name == '_pipe':
1647
return super(ProxyClient, self).__getattribute__(name)
1648
self._pipe.send(('getattr', name))
1649
data = self._pipe.recv()
1650
if data[0] == 'data':
1651
return data[1]
1652
if data[0] == 'function':
1653
def func(*args, **kwargs):
1654
self._pipe.send(('funcall', name, args, kwargs))
1655
return self._pipe.recv()[1]
1656
return func
1657
1658
def __setattr__(self, name, value):
1659
if name == '_pipe':
1660
return super(ProxyClient, self).__setattr__(name, value)
1661
self._pipe.send(('setattr', name, value))
1662
1663
1664
750
class ClientHandler(socketserver.BaseRequestHandler, object):
1665
751
"""A class to handle client connections.
1666
752
1668
754
Note: This will run in its own forked process."""
1669
755
1670
756
def handle(self):
1671
with contextlib.closing(self.server.child_pipe) as child_pipe:
1672
logger.info("TCP connection from: %s",
1673
unicode(self.client_address))
1674
logger.debug("Pipe FD: %d",
1675
self.server.child_pipe.fileno())
1676
757
logger.info(u"TCP connection from: %s",
758
unicode(self.client_address))
759
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
760
# Open IPC pipe to parent process
761
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1677
762
session = (gnutls.connection
1678
763
.ClientSession(self.request,
1679
764
gnutls.connection
1680
765
.X509Credentials()))
1681
766
767
line = self.request.makefile().readline()
768
logger.debug(u"Protocol version: %r", line)
769
try:
770
if int(line.strip().split()[0]) > 1:
771
raise RuntimeError
772
except (ValueError, IndexError, RuntimeError), error:
773
logger.error(u"Unknown protocol version: %s", error)
774
return
775
1682
776
# Note: gnutls.connection.X509Credentials is really a
1683
777
# generic GnuTLS certificate credentials object so long as
1684
778
# no X.509 keys are added to it. Therefore, we can use it
1685
779
# here despite using OpenPGP certificates.
1686
780
1687
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1688
# "+AES-256-CBC", "+SHA1",
1689
# "+COMP-NULL", "+CTYPE-OPENPGP",
1690
# "+DHE-DSS"))
781
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
782
# u"+AES-256-CBC", u"+SHA1",
783
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
784
# u"+DHE-DSS"))
1691
785
# Use a fallback default, since this MUST be set.
1692
786
priority = self.server.gnutls_priority
1693
787
if priority is None:
1694
priority = "NORMAL"
788
priority = u"NORMAL"
1695
789
(gnutls.library.functions
1696
790
.gnutls_priority_set_direct(session._c_object,
1697
791
priority, None))
1698
792
1699
# Start communication using the Mandos protocol
1700
# Get protocol number
1701
line = self.request.makefile().readline()
1702
logger.debug("Protocol version: %r", line)
1703
try:
1704
if int(line.strip().split()[0]) > 1:
1705
raise RuntimeError
1706
except (ValueError, IndexError, RuntimeError) as error:
1707
logger.error("Unknown protocol version: %s", error)
1708
return
1709
1710
# Start GnuTLS connection
1711
793
try:
1712
794
session.handshake()
1713
except gnutls.errors.GNUTLSError as error:
1714
logger.warning("Handshake failed: %s", error)
795
except gnutls.errors.GNUTLSError, error:
796
logger.warning(u"Handshake failed: %s", error)
1715
797
# Do not run session.bye() here: the session is not
1716
798
# established. Just abandon the request.
1717
799
return
1718
logger.debug("Handshake succeeded")
1719
1720
approval_required = False
800
logger.debug(u"Handshake succeeded")
1721
801
try:
1722
try:
1723
fpr = self.fingerprint(self.peer_certificate
1724
(session))
1725
except (TypeError,
1726
gnutls.errors.GNUTLSError) as error:
1727
logger.warning("Bad certificate: %s", error)
1728
return
1729
logger.debug("Fingerprint: %s", fpr)
1730
1731
try:
1732
client = ProxyClient(child_pipe, fpr,
1733
self.client_address)
1734
except KeyError:
1735
return
1736
1737
if client.approval_delay:
1738
delay = client.approval_delay
1739
client.approvals_pending += 1
1740
approval_required = True
1741
1742
while True:
1743
if not client.enabled:
1744
logger.info("Client %s is disabled",
1745
client.name)
1746
if self.server.use_dbus:
1747
# Emit D-Bus signal
1748
client.Rejected("Disabled")
1749
return
1750
1751
if client.approved or not client.approval_delay:
1752
#We are approved or approval is disabled
1753
break
1754
elif client.approved is None:
1755
logger.info("Client %s needs approval",
1756
client.name)
1757
if self.server.use_dbus:
1758
# Emit D-Bus signal
1759
client.NeedApproval(
1760
client.approval_delay_milliseconds(),
1761
client.approved_by_default)
1762
else:
1763
logger.warning("Client %s was not approved",
1764
client.name)
1765
if self.server.use_dbus:
1766
# Emit D-Bus signal
1767
client.Rejected("Denied")
1768
return
1769
1770
#wait until timeout or approved
1771
time = datetime.datetime.now()
1772
client.changedstate.acquire()
1773
client.changedstate.wait(
1774
float(timedelta_to_milliseconds(delay)
1775
/ 1000))
1776
client.changedstate.release()
1777
time2 = datetime.datetime.now()
1778
if (time2 - time) >= delay:
1779
if not client.approved_by_default:
1780
logger.warning("Client %s timed out while"
1781
" waiting for approval",
1782
client.name)
1783
if self.server.use_dbus:
1784
# Emit D-Bus signal
1785
client.Rejected("Approval timed out")
1786
return
1787
else:
1788
break
1789
else:
1790
delay -= time2 - time
1791
1792
sent_size = 0
1793
while sent_size < len(client.secret):
1794
try:
1795
sent = session.send(client.secret[sent_size:])
1796
except gnutls.errors.GNUTLSError as error:
1797
logger.warning("gnutls send failed",
1798
exc_info=error)
1799
return
1800
logger.debug("Sent: %d, remaining: %d",
1801
sent, len(client.secret)
1802
- (sent_size + sent))
1803
sent_size += sent
1804
1805
logger.info("Sending secret to %s", client.name)
1806
# bump the timeout using extended_timeout
1807
client.bump_timeout(client.extended_timeout)
1808
if self.server.use_dbus:
1809
# Emit D-Bus signal
1810
client.GotSecret()
802
fpr = self.fingerprint(self.peer_certificate(session))
803
except (TypeError, gnutls.errors.GNUTLSError), error:
804
logger.warning(u"Bad certificate: %s", error)
805
session.bye()
806
return
807
logger.debug(u"Fingerprint: %s", fpr)
1811
808
1812
finally:
1813
if approval_required:
1814
client.approvals_pending -= 1
1815
try:
1816
session.bye()
1817
except gnutls.errors.GNUTLSError as error:
1818
logger.warning("GnuTLS bye failed",
1819
exc_info=error)
809
for c in self.server.clients:
810
if c.fingerprint == fpr:
811
client = c
812
break
813
else:
814
ipc.write(u"NOTFOUND %s\n" % fpr)
815
session.bye()
816
return
817
# Have to check if client.still_valid(), since it is
818
# possible that the client timed out while establishing
819
# the GnuTLS session.
820
if not client.still_valid():
821
ipc.write(u"INVALID %s\n" % client.name)
822
session.bye()
823
return
824
ipc.write(u"SENDING %s\n" % client.name)
825
sent_size = 0
826
while sent_size < len(client.secret):
827
sent = session.send(client.secret[sent_size:])
828
logger.debug(u"Sent: %d, remaining: %d",
829
sent, len(client.secret)
830
- (sent_size + sent))
831
sent_size += sent
832
session.bye()
1820
833
1821
834
@staticmethod
1822
835
def peer_certificate(session):
1832
845
.gnutls_certificate_get_peers
1833
846
(session._c_object, ctypes.byref(list_size)))
1834
847
if not bool(cert_list) and list_size.value != 0:
1835
raise gnutls.errors.GNUTLSError("error getting peer"
1836
" certificate")
848
raise gnutls.errors.GNUTLSError(u"error getting peer"
849
u" certificate")
1837
850
if list_size.value == 0:
1838
851
return None
1839
852
cert = cert_list[0]
1865
878
if crtverify.value != 0:
1866
879
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1867
880
raise (gnutls.errors.CertificateSecurityError
1868
("Verify failed"))
881
(u"Verify failed"))
1869
882
# New buffer for the fingerprint
1870
883
buf = ctypes.create_string_buffer(20)
1871
884
buf_len = ctypes.c_size_t()
1878
891
# Convert the buffer to a Python bytestring
1879
892
fpr = ctypes.string_at(buf, buf_len.value)
1880
893
# Convert the bytestring to hexadecimal notation
1881
hex_fpr = binascii.hexlify(fpr).upper()
894
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1882
895
return hex_fpr
1883
896
1884
897
1885
class MultiprocessingMixIn(object):
1886
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1887
def sub_process_main(self, request, address):
1888
try:
1889
self.finish_request(request, address)
1890
except Exception:
1891
self.handle_error(request, address)
1892
self.close_request(request)
1893
1894
def process_request(self, request, address):
1895
"""Start a new process to process the request."""
1896
proc = multiprocessing.Process(target = self.sub_process_main,
1897
args = (request, address))
1898
proc.start()
1899
return proc
1900
1901
1902
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1903
""" adds a pipe to the MixIn """
898
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
899
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1904
900
def process_request(self, request, client_address):
1905
901
"""Overrides and wraps the original process_request().
1906
902
1907
This function creates a new pipe in self.pipe
903
This function creates a new pipe in self.pipe
1908
904
"""
1909
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1910
1911
proc = MultiprocessingMixIn.process_request(self, request,
1912
client_address)
1913
self.child_pipe.close()
1914
self.add_pipe(parent_pipe, proc)
1915
1916
def add_pipe(self, parent_pipe, proc):
905
self.pipe = os.pipe()
906
super(ForkingMixInWithPipe,
907
self).process_request(request, client_address)
908
os.close(self.pipe[1]) # close write end
909
self.add_pipe(self.pipe[0])
910
def add_pipe(self, pipe):
1917
911
"""Dummy function; override as necessary"""
1918
raise NotImplementedError
1919
1920
1921
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
912
os.close(pipe)
913
914
915
class IPv6_TCPServer(ForkingMixInWithPipe,
1922
916
socketserver.TCPServer, object):
1923
917
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1924
918
1928
922
use_ipv6: Boolean; to use IPv6 or not
1929
923
"""
1930
924
def __init__(self, server_address, RequestHandlerClass,
1931
interface=None, use_ipv6=True, socketfd=None):
1932
"""If socketfd is set, use that file descriptor instead of
1933
creating a new one with socket.socket().
1934
"""
925
interface=None, use_ipv6=True):
1935
926
self.interface = interface
1936
927
if use_ipv6:
1937
928
self.address_family = socket.AF_INET6
1938
if socketfd is not None:
1939
# Save the file descriptor
1940
self.socketfd = socketfd
1941
# Save the original socket.socket() function
1942
self.socket_socket = socket.socket
1943
# To implement --socket, we monkey patch socket.socket.
1944
#
1945
# (When socketserver.TCPServer is a new-style class, we
1946
# could make self.socket into a property instead of monkey
1947
# patching socket.socket.)
1948
#
1949
# Create a one-time-only replacement for socket.socket()
1950
@functools.wraps(socket.socket)
1951
def socket_wrapper(*args, **kwargs):
1952
# Restore original function so subsequent calls are
1953
# not affected.
1954
socket.socket = self.socket_socket
1955
del self.socket_socket
1956
# This time only, return a new socket object from the
1957
# saved file descriptor.
1958
return socket.fromfd(self.socketfd, *args, **kwargs)
1959
# Replace socket.socket() function with wrapper
1960
socket.socket = socket_wrapper
1961
# The socketserver.TCPServer.__init__ will call
1962
# socket.socket(), which might be our replacement,
1963
# socket_wrapper(), if socketfd was set.
1964
929
socketserver.TCPServer.__init__(self, server_address,
1965
930
RequestHandlerClass)
1966
1967
931
def server_bind(self):
1968
932
"""This overrides the normal server_bind() function
1969
933
to bind to an interface if one was specified, and also NOT to
1970
934
bind to an address or port if they were not specified."""
1971
935
if self.interface is not None:
1972
936
if SO_BINDTODEVICE is None:
1973
logger.error("SO_BINDTODEVICE does not exist;"
1974
" cannot bind to interface %s",
937
logger.error(u"SO_BINDTODEVICE does not exist;"
938
u" cannot bind to interface %s",
1975
939
self.interface)
1976
940
else:
1977
941
try:
1978
942
self.socket.setsockopt(socket.SOL_SOCKET,
1979
943
SO_BINDTODEVICE,
1980
str(self.interface + '\0'))
1981
except socket.error as error:
1982
if error.errno == errno.EPERM:
1983
logger.error("No permission to bind to"
1984
" interface %s", self.interface)
1985
elif error.errno == errno.ENOPROTOOPT:
1986
logger.error("SO_BINDTODEVICE not available;"
1987
" cannot bind to interface %s",
1988
self.interface)
1989
elif error.errno == errno.ENODEV:
1990
logger.error("Interface %s does not exist,"
1991
" cannot bind", self.interface)
944
str(self.interface
945
+ u'\0'))
946
except socket.error, error:
947
if error[0] == errno.EPERM:
948
logger.error(u"No permission to"
949
u" bind to interface %s",
950
self.interface)
951
elif error[0] == errno.ENOPROTOOPT:
952
logger.error(u"SO_BINDTODEVICE not available;"
953
u" cannot bind to interface %s",
954
self.interface)
1992
955
else:
1993
956
raise
1994
957
# Only bind(2) the socket if we really need to.
1995
958
if self.server_address[0] or self.server_address[1]:
1996
959
if not self.server_address[0]:
1997
960
if self.address_family == socket.AF_INET6:
1998
any_address = "::" # in6addr_any
961
any_address = u"::" # in6addr_any
1999
962
else:
2000
any_address = "0.0.0.0" # INADDR_ANY
963
any_address = socket.INADDR_ANY
2001
964
self.server_address = (any_address,
2002
965
self.server_address[1])
2003
966
elif not self.server_address[1]:
2019
982
clients: set of Client objects
2020
983
gnutls_priority GnuTLS priority string
2021
984
use_dbus: Boolean; to emit D-Bus signals or not
985
clients: set of Client objects
986
gnutls_priority GnuTLS priority string
987
use_dbus: Boolean; to emit D-Bus signals or not
2022
988
2023
989
Assumes a gobject.MainLoop event loop.
2024
990
"""
2025
991
def __init__(self, server_address, RequestHandlerClass,
2026
992
interface=None, use_ipv6=True, clients=None,
2027
gnutls_priority=None, use_dbus=True, socketfd=None):
993
gnutls_priority=None, use_dbus=True):
2028
994
self.enabled = False
2029
995
self.clients = clients
2030
996
if self.clients is None:
2031
self.clients = {}
997
self.clients = set()
2032
998
self.use_dbus = use_dbus
2033
999
self.gnutls_priority = gnutls_priority
2034
1000
IPv6_TCPServer.__init__(self, server_address,
2035
1001
RequestHandlerClass,
2036
1002
interface = interface,
2037
use_ipv6 = use_ipv6,
2038
socketfd = socketfd)
1003
use_ipv6 = use_ipv6)
2039
1004
def server_activate(self):
2040
1005
if self.enabled:
2041
1006
return socketserver.TCPServer.server_activate(self)
2042
2043
1007
def enable(self):
2044
1008
self.enabled = True
2045
2046
def add_pipe(self, parent_pipe, proc):
1009
def add_pipe(self, pipe):
2047
1010
# Call "handle_ipc" for both data and EOF events
2048
gobject.io_add_watch(parent_pipe.fileno(),
2049
gobject.IO_IN | gobject.IO_HUP,
2050
functools.partial(self.handle_ipc,
2051
parent_pipe =
2052
parent_pipe,
2053
proc = proc))
2054
2055
def handle_ipc(self, source, condition, parent_pipe=None,
2056
proc = None, client_object=None):
2057
# error, or the other end of multiprocessing.Pipe has closed
2058
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2059
# Wait for other process to exit
2060
proc.join()
2061
return False
2062
2063
# Read a request from the child
2064
request = parent_pipe.recv()
2065
command = request[0]
2066
2067
if command == 'init':
2068
fpr = request[1]
2069
address = request[2]
2070
2071
for c in self.clients.itervalues():
2072
if c.fingerprint == fpr:
2073
client = c
2074
break
2075
else:
2076
logger.info("Client not found for fingerprint: %s, ad"
2077
"dress: %s", fpr, address)
2078
if self.use_dbus:
2079
# Emit D-Bus signal
2080
mandos_dbus_service.ClientNotFound(fpr,
2081
address[0])
2082
parent_pipe.send(False)
2083
return False
2084
2085
gobject.io_add_watch(parent_pipe.fileno(),
2086
gobject.IO_IN | gobject.IO_HUP,
2087
functools.partial(self.handle_ipc,
2088
parent_pipe =
2089
parent_pipe,
2090
proc = proc,
2091
client_object =
2092
client))
2093
parent_pipe.send(True)
2094
# remove the old hook in favor of the new above hook on
2095
# same fileno
2096
return False
2097
if command == 'funcall':
2098
funcname = request[1]
2099
args = request[2]
2100
kwargs = request[3]
2101
2102
parent_pipe.send(('data', getattr(client_object,
2103
funcname)(*args,
2104
**kwargs)))
2105
2106
if command == 'getattr':
2107
attrname = request[1]
2108
if callable(client_object.__getattribute__(attrname)):
2109
parent_pipe.send(('function',))
2110
else:
2111
parent_pipe.send(('data', client_object
2112
.__getattribute__(attrname)))
2113
2114
if command == 'setattr':
2115
attrname = request[1]
2116
value = request[2]
2117
setattr(client_object, attrname, value)
2118
1011
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1012
self.handle_ipc)
1013
def handle_ipc(self, source, condition, file_objects={}):
1014
condition_names = {
1015
gobject.IO_IN: u"IN", # There is data to read.
1016
gobject.IO_OUT: u"OUT", # Data can be written (without
1017
# blocking).
1018
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1019
gobject.IO_ERR: u"ERR", # Error condition.
1020
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1021
# broken, usually for pipes and
1022
# sockets).
1023
}
1024
conditions_string = ' | '.join(name
1025
for cond, name in
1026
condition_names.iteritems()
1027
if cond & condition)
1028
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1029
conditions_string)
1030
1031
# Turn the pipe file descriptor into a Python file object
1032
if source not in file_objects:
1033
file_objects[source] = os.fdopen(source, u"r", 1)
1034
1035
# Read a line from the file object
1036
cmdline = file_objects[source].readline()
1037
if not cmdline: # Empty line means end of file
1038
# close the IPC pipe
1039
file_objects[source].close()
1040
del file_objects[source]
1041
1042
# Stop calling this function
1043
return False
1044
1045
logger.debug(u"IPC command: %r", cmdline)
1046
1047
# Parse and act on command
1048
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1049
1050
if cmd == u"NOTFOUND":
1051
logger.warning(u"Client not found for fingerprint: %s",
1052
args)
1053
if self.use_dbus:
1054
# Emit D-Bus signal
1055
mandos_dbus_service.ClientNotFound(args)
1056
elif cmd == u"INVALID":
1057
for client in self.clients:
1058
if client.name == args:
1059
logger.warning(u"Client %s is invalid", args)
1060
if self.use_dbus:
1061
# Emit D-Bus signal
1062
client.Rejected()
1063
break
1064
else:
1065
logger.error(u"Unknown client %s is invalid", args)
1066
elif cmd == u"SENDING":
1067
for client in self.clients:
1068
if client.name == args:
1069
logger.info(u"Sending secret to %s", client.name)
1070
client.checked_ok()
1071
if self.use_dbus:
1072
# Emit D-Bus signal
1073
client.ReceivedSecret()
1074
break
1075
else:
1076
logger.error(u"Sending secret to unknown client %s",
1077
args)
1078
else:
1079
logger.error(u"Unknown IPC command: %r", cmdline)
1080
1081
# Keep calling this function
2119
1082
return True
2120
1083
2121
1084
2122
def rfc3339_duration_to_delta(duration):
2123
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2124
2125
>>> rfc3339_duration_to_delta("P7D")
2126
datetime.timedelta(7)
2127
>>> rfc3339_duration_to_delta("PT60S")
2128
datetime.timedelta(0, 60)
2129
>>> rfc3339_duration_to_delta("PT60M")
2130
datetime.timedelta(0, 3600)
2131
>>> rfc3339_duration_to_delta("PT24H")
2132
datetime.timedelta(1)
2133
>>> rfc3339_duration_to_delta("P1W")
2134
datetime.timedelta(7)
2135
>>> rfc3339_duration_to_delta("PT5M30S")
2136
datetime.timedelta(0, 330)
2137
>>> rfc3339_duration_to_delta("P1DT3M20S")
2138
datetime.timedelta(1, 200)
2139
"""
2140
2141
# Parsing an RFC 3339 duration with regular expressions is not
2142
# possible - there would have to be multiple places for the same
2143
# values, like seconds. The current code, while more esoteric, is
2144
# cleaner without depending on a parsing library. If Python had a
2145
# built-in library for parsing we would use it, but we'd like to
2146
# avoid excessive use of external libraries.
2147
2148
# New type for defining tokens, syntax, and semantics all-in-one
2149
Token = collections.namedtuple("Token",
2150
("regexp", # To match token; if
2151
# "value" is not None,
2152
# must have a "group"
2153
# containing digits
2154
"value", # datetime.timedelta or
2155
# None
2156
"followers")) # Tokens valid after
2157
# this token
2158
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2159
# the "duration" ABNF definition in RFC 3339, Appendix A.
2160
token_end = Token(re.compile(r"$"), None, frozenset())
2161
token_second = Token(re.compile(r"(\d+)S"),
2162
datetime.timedelta(seconds=1),
2163
frozenset((token_end,)))
2164
token_minute = Token(re.compile(r"(\d+)M"),
2165
datetime.timedelta(minutes=1),
2166
frozenset((token_second, token_end)))
2167
token_hour = Token(re.compile(r"(\d+)H"),
2168
datetime.timedelta(hours=1),
2169
frozenset((token_minute, token_end)))
2170
token_time = Token(re.compile(r"T"),
2171
None,
2172
frozenset((token_hour, token_minute,
2173
token_second)))
2174
token_day = Token(re.compile(r"(\d+)D"),
2175
datetime.timedelta(days=1),
2176
frozenset((token_time, token_end)))
2177
token_month = Token(re.compile(r"(\d+)M"),
2178
datetime.timedelta(weeks=4),
2179
frozenset((token_day, token_end)))
2180
token_year = Token(re.compile(r"(\d+)Y"),
2181
datetime.timedelta(weeks=52),
2182
frozenset((token_month, token_end)))
2183
token_week = Token(re.compile(r"(\d+)W"),
2184
datetime.timedelta(weeks=1),
2185
frozenset((token_end,)))
2186
token_duration = Token(re.compile(r"P"), None,
2187
frozenset((token_year, token_month,
2188
token_day, token_time,
2189
token_week))),
2190
# Define starting values
2191
value = datetime.timedelta() # Value so far
2192
found_token = None
2193
followers = frozenset(token_duration,) # Following valid tokens
2194
s = duration # String left to parse
2195
# Loop until end token is found
2196
while found_token is not token_end:
2197
# Search for any currently valid tokens
2198
for token in followers:
2199
match = token.regexp.match(s)
2200
if match is not None:
2201
# Token found
2202
if token.value is not None:
2203
# Value found, parse digits
2204
factor = int(match.group(1), 10)
2205
# Add to value so far
2206
value += factor * token.value
2207
# Strip token from string
2208
s = token.regexp.sub("", s, 1)
2209
# Go to found token
2210
found_token = token
2211
# Set valid next tokens
2212
followers = found_token.followers
2213
break
2214
else:
2215
# No currently valid tokens were found
2216
raise ValueError("Invalid RFC 3339 duration")
2217
# End token found
2218
return value
2219
2220
2221
1085
def string_to_delta(interval):
2222
1086
"""Parse a string and return a datetime.timedelta
2223
1087
2224
>>> string_to_delta('7d')
1088
>>> string_to_delta(u'7d')
2225
1089
datetime.timedelta(7)
2226
>>> string_to_delta('60s')
1090
>>> string_to_delta(u'60s')
2227
1091
datetime.timedelta(0, 60)
2228
>>> string_to_delta('60m')
1092
>>> string_to_delta(u'60m')
2229
1093
datetime.timedelta(0, 3600)
2230
>>> string_to_delta('24h')
1094
>>> string_to_delta(u'24h')
2231
1095
datetime.timedelta(1)
2232
>>> string_to_delta('1w')
1096
>>> string_to_delta(u'1w')
2233
1097
datetime.timedelta(7)
2234
>>> string_to_delta('5m 30s')
1098
>>> string_to_delta(u'5m 30s')
2235
1099
datetime.timedelta(0, 330)
2236
1100
"""
2237
2238
try:
2239
return rfc3339_duration_to_delta(interval)
2240
except ValueError:
2241
pass
2242
2243
1101
timevalue = datetime.timedelta(0)
2244
1102
for s in interval.split():
2245
1103
try:
2246
1104
suffix = unicode(s[-1])
2247
1105
value = int(s[:-1])
2248
if suffix == "d":
1106
if suffix == u"d":
2249
1107
delta = datetime.timedelta(value)
2250
elif suffix == "s":
1108
elif suffix == u"s":
2251
1109
delta = datetime.timedelta(0, value)
2252
elif suffix == "m":
1110
elif suffix == u"m":
2253
1111
delta = datetime.timedelta(0, 0, 0, 0, value)
2254
elif suffix == "h":
1112
elif suffix == u"h":
2255
1113
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2256
elif suffix == "w":
1114
elif suffix == u"w":
2257
1115
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2258
1116
else:
2259
raise ValueError("Unknown suffix {0!r}"
2260
.format(suffix))
2261
except (ValueError, IndexError) as e:
2262
raise ValueError(*(e.args))
1117
raise ValueError
1118
except (ValueError, IndexError):
1119
raise ValueError
2263
1120
timevalue += delta
2264
1121
return timevalue
2265
1122
2266
1123
1124
def if_nametoindex(interface):
1125
"""Call the C function if_nametoindex(), or equivalent
1126
1127
Note: This function cannot accept a unicode string."""
1128
global if_nametoindex
1129
try:
1130
if_nametoindex = (ctypes.cdll.LoadLibrary
1131
(ctypes.util.find_library(u"c"))
1132
.if_nametoindex)
1133
except (OSError, AttributeError):
1134
logger.warning(u"Doing if_nametoindex the hard way")
1135
def if_nametoindex(interface):
1136
"Get an interface index the hard way, i.e. using fcntl()"
1137
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1138
with closing(socket.socket()) as s:
1139
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1140
struct.pack(str(u"16s16x"),
1141
interface))
1142
interface_index = struct.unpack(str(u"I"),
1143
ifreq[16:20])[0]
1144
return interface_index
1145
return if_nametoindex(interface)
1146
1147
2267
1148
def daemon(nochdir = False, noclose = False):
2268
1149
"""See daemon(3). Standard BSD Unix function.
2269
1150
2272
1153
sys.exit()
2273
1154
os.setsid()
2274
1155
if not nochdir:
2275
os.chdir("/")
1156
os.chdir(u"/")
2276
1157
if os.fork():
2277
1158
sys.exit()
2278
1159
if not noclose:
2279
1160
# Close all standard open file descriptors
2280
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1161
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2281
1162
if not stat.S_ISCHR(os.fstat(null).st_mode):
2282
1163
raise OSError(errno.ENODEV,
2283
"{0} not a character device"
2284
.format(os.devnull))
1164
u"/dev/null not a character device")
2285
1165
os.dup2(null, sys.stdin.fileno())
2286
1166
os.dup2(null, sys.stdout.fileno())
2287
1167
os.dup2(null, sys.stderr.fileno())
2291
1171
2292
1172
def main():
2293
1173
2294
##################################################################
1174
######################################################################
2295
1175
# Parsing of options, both command line and config file
2296
1176
2297
parser = argparse.ArgumentParser()
2298
parser.add_argument("-v", "--version", action="version",
2299
version = "%(prog)s {0}".format(version),
2300
help="show version number and exit")
2301
parser.add_argument("-i", "--interface", metavar="IF",
2302
help="Bind to interface IF")
2303
parser.add_argument("-a", "--address",
2304
help="Address to listen for requests on")
2305
parser.add_argument("-p", "--port", type=int,
2306
help="Port number to receive requests on")
2307
parser.add_argument("--check", action="store_true",
2308
help="Run self-test")
2309
parser.add_argument("--debug", action="store_true",
2310
help="Debug mode; run in foreground and log"
2311
" to terminal", default=None)
2312
parser.add_argument("--debuglevel", metavar="LEVEL",
2313
help="Debug level for stdout output")
2314
parser.add_argument("--priority", help="GnuTLS"
2315
" priority string (see GnuTLS documentation)")
2316
parser.add_argument("--servicename",
2317
metavar="NAME", help="Zeroconf service name")
2318
parser.add_argument("--configdir",
2319
default="/etc/mandos", metavar="DIR",
2320
help="Directory to search for configuration"
2321
" files")
2322
parser.add_argument("--no-dbus", action="store_false",
2323
dest="use_dbus", help="Do not provide D-Bus"
2324
" system bus interface", default=None)
2325
parser.add_argument("--no-ipv6", action="store_false",
2326
dest="use_ipv6", help="Do not use IPv6",
2327
default=None)
2328
parser.add_argument("--no-restore", action="store_false",
2329
dest="restore", help="Do not restore stored"
2330
" state", default=None)
2331
parser.add_argument("--socket", type=int,
2332
help="Specify a file descriptor to a network"
2333
" socket to use instead of creating one")
2334
parser.add_argument("--statedir", metavar="DIR",
2335
help="Directory to save/restore state in")
2336
parser.add_argument("--foreground", action="store_true",
2337
help="Run in foreground", default=None)
2338
2339
options = parser.parse_args()
1177
parser = optparse.OptionParser(version = "%%prog %s" % version)
1178
parser.add_option("-i", u"--interface", type=u"string",
1179
metavar="IF", help=u"Bind to interface IF")
1180
parser.add_option("-a", u"--address", type=u"string",
1181
help=u"Address to listen for requests on")
1182
parser.add_option("-p", u"--port", type=u"int",
1183
help=u"Port number to receive requests on")
1184
parser.add_option("--check", action=u"store_true",
1185
help=u"Run self-test")
1186
parser.add_option("--debug", action=u"store_true",
1187
help=u"Debug mode; run in foreground and log to"
1188
u" terminal")
1189
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1190
u" priority string (see GnuTLS documentation)")
1191
parser.add_option("--servicename", type=u"string",
1192
metavar=u"NAME", help=u"Zeroconf service name")
1193
parser.add_option("--configdir", type=u"string",
1194
default=u"/etc/mandos", metavar=u"DIR",
1195
help=u"Directory to search for configuration"
1196
u" files")
1197
parser.add_option("--no-dbus", action=u"store_false",
1198
dest=u"use_dbus", help=u"Do not provide D-Bus"
1199
u" system bus interface")
1200
parser.add_option("--no-ipv6", action=u"store_false",
1201
dest=u"use_ipv6", help=u"Do not use IPv6")
1202
options = parser.parse_args()[0]
2340
1203
2341
1204
if options.check:
2342
1205
import doctest
2344
1207
sys.exit()
2345
1208
2346
1209
# Default values for config file for server-global settings
2347
server_defaults = { "interface": "",
2348
"address": "",
2349
"port": "",
2350
"debug": "False",
2351
"priority":
2352
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2353
"servicename": "Mandos",
2354
"use_dbus": "True",
2355
"use_ipv6": "True",
2356
"debuglevel": "",
2357
"restore": "True",
2358
"socket": "",
2359
"statedir": "/var/lib/mandos",
2360
"foreground": "False",
1210
server_defaults = { u"interface": u"",
1211
u"address": u"",
1212
u"port": u"",
1213
u"debug": u"False",
1214
u"priority":
1215
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1216
u"servicename": u"Mandos",
1217
u"use_dbus": u"True",
1218
u"use_ipv6": u"True",
2361
1219
}
2362
1220
2363
1221
# Parse config file for server-global settings
2364
1222
server_config = configparser.SafeConfigParser(server_defaults)
2365
1223
del server_defaults
2366
1224
server_config.read(os.path.join(options.configdir,
2367
"mandos.conf"))
1225
u"mandos.conf"))
2368
1226
# Convert the SafeConfigParser object to a dict
2369
1227
server_settings = server_config.defaults()
2370
1228
# Use the appropriate methods on the non-string config options
2371
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2372
server_settings[option] = server_config.getboolean("DEFAULT",
1229
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1230
server_settings[option] = server_config.getboolean(u"DEFAULT",
2373
1231
option)
2374
1232
if server_settings["port"]:
2375
server_settings["port"] = server_config.getint("DEFAULT",
2376
"port")
2377
if server_settings["socket"]:
2378
server_settings["socket"] = server_config.getint("DEFAULT",
2379
"socket")
2380
# Later, stdin will, and stdout and stderr might, be dup'ed
2381
# over with an opened os.devnull. But we don't want this to
2382
# happen with a supplied network socket.
2383
if 0 <= server_settings["socket"] <= 2:
2384
server_settings["socket"] = os.dup(server_settings
2385
["socket"])
1233
server_settings["port"] = server_config.getint(u"DEFAULT",
1234
u"port")
2386
1235
del server_config
2387
1236
2388
1237
# Override the settings from the config file with command line
2389
1238
# options, if set.
2390
for option in ("interface", "address", "port", "debug",
2391
"priority", "servicename", "configdir",
2392
"use_dbus", "use_ipv6", "debuglevel", "restore",
2393
"statedir", "socket", "foreground"):
1239
for option in (u"interface", u"address", u"port", u"debug",
1240
u"priority", u"servicename", u"configdir",
1241
u"use_dbus", u"use_ipv6"):
2394
1242
value = getattr(options, option)
2395
1243
if value is not None:
2396
1244
server_settings[option] = value
2399
1247
for option in server_settings.keys():
2400
1248
if type(server_settings[option]) is str:
2401
1249
server_settings[option] = unicode(server_settings[option])
2402
# Force all boolean options to be boolean
2403
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2404
"foreground"):
2405
server_settings[option] = bool(server_settings[option])
2406
# Debug implies foreground
2407
if server_settings["debug"]:
2408
server_settings["foreground"] = True
2409
1250
# Now we have our good server settings in "server_settings"
2410
1251
2411
1252
##################################################################
2412
1253
2413
1254
# For convenience
2414
debug = server_settings["debug"]
2415
debuglevel = server_settings["debuglevel"]
2416
use_dbus = server_settings["use_dbus"]
2417
use_ipv6 = server_settings["use_ipv6"]
2418
stored_state_path = os.path.join(server_settings["statedir"],
2419
stored_state_file)
2420
foreground = server_settings["foreground"]
2421
2422
if debug:
2423
initlogger(debug, logging.DEBUG)
2424
else:
2425
if not debuglevel:
2426
initlogger(debug)
2427
else:
2428
level = getattr(logging, debuglevel.upper())
2429
initlogger(debug, level)
2430
2431
if server_settings["servicename"] != "Mandos":
1255
debug = server_settings[u"debug"]
1256
use_dbus = server_settings[u"use_dbus"]
1257
use_ipv6 = server_settings[u"use_ipv6"]
1258
1259
if not debug:
1260
syslogger.setLevel(logging.WARNING)
1261
console.setLevel(logging.WARNING)
1262
1263
if server_settings[u"servicename"] != u"Mandos":
2432
1264
syslogger.setFormatter(logging.Formatter
2433
('Mandos ({0}) [%(process)d]:'
2434
' %(levelname)s: %(message)s'
2435
.format(server_settings
2436
["servicename"])))
1265
(u'Mandos (%s) [%%(process)d]:'
1266
u' %%(levelname)s: %%(message)s'
1267
% server_settings[u"servicename"]))
2437
1268
2438
1269
# Parse config file with clients
2439
client_config = configparser.SafeConfigParser(Client
2440
.client_defaults)
2441
client_config.read(os.path.join(server_settings["configdir"],
2442
"clients.conf"))
1270
client_defaults = { u"timeout": u"1h",
1271
u"interval": u"5m",
1272
u"checker": u"fping -q -- %%(host)s",
1273
u"host": u"",
1274
}
1275
client_config = configparser.SafeConfigParser(client_defaults)
1276
client_config.read(os.path.join(server_settings[u"configdir"],
1277
u"clients.conf"))
2443
1278
2444
1279
global mandos_dbus_service
2445
1280
mandos_dbus_service = None
2446
1281
2447
tcp_server = MandosServer((server_settings["address"],
2448
server_settings["port"]),
1282
tcp_server = MandosServer((server_settings[u"address"],
1283
server_settings[u"port"]),
2449
1284
ClientHandler,
2450
interface=(server_settings["interface"]
2451
or None),
1285
interface=server_settings[u"interface"],
2452
1286
use_ipv6=use_ipv6,
2453
1287
gnutls_priority=
2454
server_settings["priority"],
2455
use_dbus=use_dbus,
2456
socketfd=(server_settings["socket"]
2457
or None))
2458
if not foreground:
2459
pidfilename = "/run/mandos.pid"
2460
if not os.path.isdir("/run/."):
2461
pidfilename = "/var/run/mandos.pid"
2462
pidfile = None
2463
try:
2464
pidfile = open(pidfilename, "w")
2465
except IOError as e:
2466
logger.error("Could not open file %r", pidfilename,
2467
exc_info=e)
1288
server_settings[u"priority"],
1289
use_dbus=use_dbus)
1290
pidfilename = u"/var/run/mandos.pid"
1291
try:
1292
pidfile = open(pidfilename, u"w")
1293
except IOError:
1294
logger.error(u"Could not open file %r", pidfilename)
2468
1295
2469
for name in ("_mandos", "mandos", "nobody"):
1296
try:
1297
uid = pwd.getpwnam(u"_mandos").pw_uid
1298
gid = pwd.getpwnam(u"_mandos").pw_gid
1299
except KeyError:
2470
1300
try:
2471
uid = pwd.getpwnam(name).pw_uid
2472
gid = pwd.getpwnam(name).pw_gid
2473
break
1301
uid = pwd.getpwnam(u"mandos").pw_uid
1302
gid = pwd.getpwnam(u"mandos").pw_gid
2474
1303
except KeyError:
2475
continue
2476
else:
2477
uid = 65534
2478
gid = 65534
1304
try:
1305
uid = pwd.getpwnam(u"nobody").pw_uid
1306
gid = pwd.getpwnam(u"nobody").pw_gid
1307
except KeyError:
1308
uid = 65534
1309
gid = 65534
2479
1310
try:
2480
1311
os.setgid(gid)
2481
1312
os.setuid(uid)
2482
except OSError as error:
2483
if error.errno != errno.EPERM:
1313
except OSError, error:
1314
if error[0] != errno.EPERM:
2484
1315
raise error
2485
1316
1317
# Enable all possible GnuTLS debugging
2486
1318
if debug:
2487
# Enable all possible GnuTLS debugging
2488
2489
1319
# "Use a log level over 10 to enable all debugging options."
2490
1320
# - GnuTLS manual
2491
1321
gnutls.library.functions.gnutls_global_set_log_level(11)
2492
1322
2493
1323
@gnutls.library.types.gnutls_log_func
2494
1324
def debug_gnutls(level, string):
2495
logger.debug("GnuTLS: %s", string[:-1])
1325
logger.debug(u"GnuTLS: %s", string[:-1])
2496
1326
2497
1327
(gnutls.library.functions
2498
1328
.gnutls_global_set_log_function(debug_gnutls))
2499
2500
# Redirect stdin so all checkers get /dev/null
2501
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2502
os.dup2(null, sys.stdin.fileno())
2503
if null > 2:
2504
os.close(null)
2505
2506
# Need to fork before connecting to D-Bus
2507
if not foreground:
2508
# Close all input and output, do double fork, etc.
2509
daemon()
2510
2511
# multiprocessing will use threads, so before we use gobject we
2512
# need to inform gobject that threads will be used.
2513
gobject.threads_init()
2514
1329
2515
1330
global main_loop
2516
1331
# From the Avahi example code
2517
DBusGMainLoop(set_as_default=True)
1332
DBusGMainLoop(set_as_default=True )
2518
1333
main_loop = gobject.MainLoop()
2519
1334
bus = dbus.SystemBus()
2520
1335
# End of Avahi example code
2521
1336
if use_dbus:
2522
try:
2523
bus_name = dbus.service.BusName("se.recompile.Mandos",
2524
bus, do_not_queue=True)
2525
old_bus_name = (dbus.service.BusName
2526
("se.bsnet.fukt.Mandos", bus,
2527
do_not_queue=True))
2528
except dbus.exceptions.NameExistsException as e:
2529
logger.error("Disabling D-Bus:", exc_info=e)
2530
use_dbus = False
2531
server_settings["use_dbus"] = False
2532
tcp_server.use_dbus = False
1337
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2533
1338
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2534
service = AvahiServiceToSyslog(name =
2535
server_settings["servicename"],
2536
servicetype = "_mandos._tcp",
2537
protocol = protocol, bus = bus)
1339
service = AvahiService(name = server_settings[u"servicename"],
1340
servicetype = u"_mandos._tcp",
1341
protocol = protocol, bus = bus)
2538
1342
if server_settings["interface"]:
2539
1343
service.interface = (if_nametoindex
2540
(str(server_settings["interface"])))
2541
2542
global multiprocessing_manager
2543
multiprocessing_manager = multiprocessing.Manager()
1344
(str(server_settings[u"interface"])))
2544
1345
2545
1346
client_class = Client
2546
1347
if use_dbus:
2547
1348
client_class = functools.partial(ClientDBus, bus = bus)
2548
2549
client_settings = Client.config_parser(client_config)
2550
old_client_settings = {}
2551
clients_data = {}
2552
2553
# This is used to redirect stdout and stderr for checker processes
2554
global wnull
2555
wnull = open(os.devnull, "w") # A writable /dev/null
2556
# Only used if server is running in foreground but not in debug
2557
# mode
2558
if debug or not foreground:
2559
wnull.close()
2560
2561
# Get client data and settings from last running state.
2562
if server_settings["restore"]:
2563
try:
2564
with open(stored_state_path, "rb") as stored_state:
2565
clients_data, old_client_settings = (pickle.load
2566
(stored_state))
2567
os.remove(stored_state_path)
2568
except IOError as e:
2569
if e.errno == errno.ENOENT:
2570
logger.warning("Could not load persistent state: {0}"
2571
.format(os.strerror(e.errno)))
2572
else:
2573
logger.critical("Could not load persistent state:",
2574
exc_info=e)
2575
raise
2576
except EOFError as e:
2577
logger.warning("Could not load persistent state: "
2578
"EOFError:", exc_info=e)
2579
2580
with PGPEngine() as pgp:
2581
for client_name, client in clients_data.iteritems():
2582
# Skip removed clients
2583
if client_name not in client_settings:
2584
continue
2585
2586
# Decide which value to use after restoring saved state.
2587
# We have three different values: Old config file,
2588
# new config file, and saved state.
2589
# New config value takes precedence if it differs from old
2590
# config value, otherwise use saved state.
2591
for name, value in client_settings[client_name].items():
2592
try:
2593
# For each value in new config, check if it
2594
# differs from the old config value (Except for
2595
# the "secret" attribute)
2596
if (name != "secret" and
2597
value != old_client_settings[client_name]
2598
[name]):
2599
client[name] = value
2600
except KeyError:
2601
pass
2602
2603
# Clients who has passed its expire date can still be
2604
# enabled if its last checker was successful. Clients
2605
# whose checker succeeded before we stored its state is
2606
# assumed to have successfully run all checkers during
2607
# downtime.
2608
if client["enabled"]:
2609
if datetime.datetime.utcnow() >= client["expires"]:
2610
if not client["last_checked_ok"]:
2611
logger.warning(
2612
"disabling client {0} - Client never "
2613
"performed a successful checker"
2614
.format(client_name))
2615
client["enabled"] = False
2616
elif client["last_checker_status"] != 0:
2617
logger.warning(
2618
"disabling client {0} - Client "
2619
"last checker failed with error code {1}"
2620
.format(client_name,
2621
client["last_checker_status"]))
2622
client["enabled"] = False
2623
else:
2624
client["expires"] = (datetime.datetime
2625
.utcnow()
2626
+ client["timeout"])
2627
logger.debug("Last checker succeeded,"
2628
" keeping {0} enabled"
2629
.format(client_name))
2630
try:
2631
client["secret"] = (
2632
pgp.decrypt(client["encrypted_secret"],
2633
client_settings[client_name]
2634
["secret"]))
2635
except PGPError:
2636
# If decryption fails, we use secret from new settings
2637
logger.debug("Failed to decrypt {0} old secret"
2638
.format(client_name))
2639
client["secret"] = (
2640
client_settings[client_name]["secret"])
2641
2642
# Add/remove clients based on new changes made to config
2643
for client_name in (set(old_client_settings)
2644
- set(client_settings)):
2645
del clients_data[client_name]
2646
for client_name in (set(client_settings)
2647
- set(old_client_settings)):
2648
clients_data[client_name] = client_settings[client_name]
2649
2650
# Create all client objects
2651
for client_name, client in clients_data.iteritems():
2652
tcp_server.clients[client_name] = client_class(
2653
name = client_name, settings = client,
2654
server_settings = server_settings)
2655
1349
tcp_server.clients.update(set(
1350
client_class(name = section,
1351
config= dict(client_config.items(section)))
1352
for section in client_config.sections()))
2656
1353
if not tcp_server.clients:
2657
logger.warning("No clients defined")
2658
2659
if not foreground:
2660
if pidfile is not None:
2661
try:
2662
with pidfile:
2663
pid = os.getpid()
2664
pidfile.write(str(pid) + "\n".encode("utf-8"))
2665
except IOError:
2666
logger.error("Could not write to file %r with PID %d",
2667
pidfilename, pid)
1354
logger.warning(u"No clients defined")
1355
1356
if debug:
1357
# Redirect stdin so all checkers get /dev/null
1358
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1359
os.dup2(null, sys.stdin.fileno())
1360
if null > 2:
1361
os.close(null)
1362
else:
1363
# No console logging
1364
logger.removeHandler(console)
1365
# Close all input and output, do double fork, etc.
1366
daemon()
1367
1368
try:
1369
with closing(pidfile):
1370
pid = os.getpid()
1371
pidfile.write(str(pid) + "\n")
2668
1372
del pidfile
2669
del pidfilename
2670
1373
except IOError:
1374
logger.error(u"Could not write to file %r with PID %d",
1375
pidfilename, pid)
1376
except NameError:
1377
# "pidfile" was never created
1378
pass
1379
del pidfilename
1380
1381
def cleanup():
1382
"Cleanup function; run on exit"
1383
service.cleanup()
1384
1385
while tcp_server.clients:
1386
client = tcp_server.clients.pop()
1387
client.disable_hook = None
1388
client.disable()
1389
1390
atexit.register(cleanup)
1391
1392
if not debug:
1393
signal.signal(signal.SIGINT, signal.SIG_IGN)
2671
1394
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2672
1395
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2673
1396
2674
1397
if use_dbus:
2675
@alternate_dbus_interfaces({"se.recompile.Mandos":
2676
"se.bsnet.fukt.Mandos"})
2677
class MandosDBusService(DBusObjectWithProperties):
1398
class MandosDBusService(dbus.service.Object):
2678
1399
"""A D-Bus proxy object"""
2679
1400
def __init__(self):
2680
dbus.service.Object.__init__(self, bus, "/")
2681
_interface = "se.recompile.Mandos"
2682
2683
@dbus_interface_annotations(_interface)
2684
def _foo(self):
2685
return { "org.freedesktop.DBus.Property"
2686
".EmitsChangedSignal":
2687
"false"}
2688
2689
@dbus.service.signal(_interface, signature="o")
2690
def ClientAdded(self, objpath):
2691
"D-Bus signal"
2692
pass
2693
2694
@dbus.service.signal(_interface, signature="ss")
2695
def ClientNotFound(self, fingerprint, address):
2696
"D-Bus signal"
2697
pass
2698
2699
@dbus.service.signal(_interface, signature="os")
1401
dbus.service.Object.__init__(self, bus, u"/")
1402
_interface = u"se.bsnet.fukt.Mandos"
1403
1404
@dbus.service.signal(_interface, signature=u"oa{sv}")
1405
def ClientAdded(self, objpath, properties):
1406
"D-Bus signal"
1407
pass
1408
1409
@dbus.service.signal(_interface, signature=u"s")
1410
def ClientNotFound(self, fingerprint):
1411
"D-Bus signal"
1412
pass
1413
1414
@dbus.service.signal(_interface, signature=u"os")
2700
1415
def ClientRemoved(self, objpath, name):
2701
1416
"D-Bus signal"
2702
1417
pass
2703
1418
2704
@dbus.service.method(_interface, out_signature="ao")
1419
@dbus.service.method(_interface, out_signature=u"ao")
2705
1420
def GetAllClients(self):
2706
1421
"D-Bus method"
2707
1422
return dbus.Array(c.dbus_object_path
2708
for c in
2709
tcp_server.clients.itervalues())
1423
for c in tcp_server.clients)
2710
1424
2711
1425
@dbus.service.method(_interface,
2712
out_signature="a{oa{sv}}")
1426
out_signature=u"a{oa{sv}}")
2713
1427
def GetAllClientsWithProperties(self):
2714
1428
"D-Bus method"
2715
1429
return dbus.Dictionary(
2716
((c.dbus_object_path, c.GetAll(""))
2717
for c in tcp_server.clients.itervalues()),
2718
signature="oa{sv}")
1430
((c.dbus_object_path, c.GetAllProperties())
1431
for c in tcp_server.clients),
1432
signature=u"oa{sv}")
2719
1433
2720
@dbus.service.method(_interface, in_signature="o")
1434
@dbus.service.method(_interface, in_signature=u"o")
2721
1435
def RemoveClient(self, object_path):
2722
1436
"D-Bus method"
2723
for c in tcp_server.clients.itervalues():
1437
for c in tcp_server.clients:
2724
1438
if c.dbus_object_path == object_path:
2725
del tcp_server.clients[c.name]
1439
tcp_server.clients.remove(c)
2726
1440
c.remove_from_connection()
2727
1441
# Don't signal anything except ClientRemoved
2728
c.disable(quiet=True)
1442
c.disable(signal=False)
2729
1443
# Emit D-Bus signal
2730
1444
self.ClientRemoved(object_path, c.name)
2731
1445
return
2732
raise KeyError(object_path)
1446
raise KeyError
2733
1447
2734
1448
del _interface
2735
1449
2736
1450
mandos_dbus_service = MandosDBusService()
2737
1451
2738
def cleanup():
2739
"Cleanup function; run on exit"
2740
service.cleanup()
2741
2742
multiprocessing.active_children()
2743
wnull.close()
2744
if not (tcp_server.clients or client_settings):
2745
return
2746
2747
# Store client before exiting. Secrets are encrypted with key
2748
# based on what config file has. If config file is
2749
# removed/edited, old secret will thus be unrecovable.
2750
clients = {}
2751
with PGPEngine() as pgp:
2752
for client in tcp_server.clients.itervalues():
2753
key = client_settings[client.name]["secret"]
2754
client.encrypted_secret = pgp.encrypt(client.secret,
2755
key)
2756
client_dict = {}
2757
2758
# A list of attributes that can not be pickled
2759
# + secret.
2760
exclude = set(("bus", "changedstate", "secret",
2761
"checker", "server_settings"))
2762
for name, typ in (inspect.getmembers
2763
(dbus.service.Object)):
2764
exclude.add(name)
2765
2766
client_dict["encrypted_secret"] = (client
2767
.encrypted_secret)
2768
for attr in client.client_structure:
2769
if attr not in exclude:
2770
client_dict[attr] = getattr(client, attr)
2771
2772
clients[client.name] = client_dict
2773
del client_settings[client.name]["secret"]
2774
2775
try:
2776
with (tempfile.NamedTemporaryFile
2777
(mode='wb', suffix=".pickle", prefix='clients-',
2778
dir=os.path.dirname(stored_state_path),
2779
delete=False)) as stored_state:
2780
pickle.dump((clients, client_settings), stored_state)
2781
tempname=stored_state.name
2782
os.rename(tempname, stored_state_path)
2783
except (IOError, OSError) as e:
2784
if not debug:
2785
try:
2786
os.remove(tempname)
2787
except NameError:
2788
pass
2789
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2790
logger.warning("Could not save persistent state: {0}"
2791
.format(os.strerror(e.errno)))
2792
else:
2793
logger.warning("Could not save persistent state:",
2794
exc_info=e)
2795
raise e
2796
2797
# Delete all clients, and settings from config
2798
while tcp_server.clients:
2799
name, client = tcp_server.clients.popitem()
2800
if use_dbus:
2801
client.remove_from_connection()
2802
# Don't signal anything except ClientRemoved
2803
client.disable(quiet=True)
2804
if use_dbus:
2805
# Emit D-Bus signal
2806
mandos_dbus_service.ClientRemoved(client
2807
.dbus_object_path,
2808
client.name)
2809
client_settings.clear()
2810
2811
atexit.register(cleanup)
2812
2813
for client in tcp_server.clients.itervalues():
1452
for client in tcp_server.clients:
2814
1453
if use_dbus:
2815
1454
# Emit D-Bus signal
2816
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2817
# Need to initiate checking of clients
2818
if client.enabled:
2819
client.init_checker()
1455
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1456
client.GetAllProperties())
1457
client.enable()
2820
1458
2821
1459
tcp_server.enable()
2822
1460
tcp_server.server_activate()
2824
1462
# Find out what port we got
2825
1463
service.port = tcp_server.socket.getsockname()[1]
2826
1464
if use_ipv6:
2827
logger.info("Now listening on address %r, port %d,"
2828
" flowinfo %d, scope_id %d",
2829
*tcp_server.socket.getsockname())
1465
logger.info(u"Now listening on address %r, port %d,"
1466
" flowinfo %d, scope_id %d"
1467
% tcp_server.socket.getsockname())
2830
1468
else: # IPv4
2831
logger.info("Now listening on address %r, port %d",
2832
*tcp_server.socket.getsockname())
1469
logger.info(u"Now listening on address %r, port %d"
1470
% tcp_server.socket.getsockname())
2833
1471
2834
1472
#service.interface = tcp_server.socket.getsockname()[3]
2835
1473
2837
1475
# From the Avahi example code
2838
1476
try:
2839
1477
service.activate()
2840
except dbus.exceptions.DBusException as error:
2841
logger.critical("D-Bus Exception", exc_info=error)
2842
cleanup()
1478
except dbus.exceptions.DBusException, error:
1479
logger.critical(u"DBusException: %s", error)
2843
1480
sys.exit(1)
2844
1481
# End of Avahi example code
2845
1482
2848
1485
(tcp_server.handle_request
2849
1486
(*args[2:], **kwargs) or True))
2850
1487
2851
logger.debug("Starting main loop")
1488
logger.debug(u"Starting main loop")
2852
1489
main_loop.run()
2853
except AvahiError as error:
2854
logger.critical("Avahi Error", exc_info=error)
2855
cleanup()
1490
except AvahiError, error:
1491
logger.critical(u"AvahiError: %s", error)
2856
1492
sys.exit(1)
2857
1493
except KeyboardInterrupt:
2858
1494
if debug:
2859
print("", file=sys.stderr)
2860
logger.debug("Server received KeyboardInterrupt")
2861
logger.debug("Server exiting")
2862
# Must run before the D-Bus bus name gets deregistered
2863
cleanup()
1495
print >> sys.stderr
1496
logger.debug(u"Server received KeyboardInterrupt")
1497
logger.debug(u"Server exiting")
2864
1498
2865
1499
if __name__ == '__main__':
2866
1500
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0