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- Committer: Teddy Hogeborn
- Date: 2011-03-08 11:08:35 UTC
- Revision ID: teddy@fukt.bsnet.se-20110308110835-3sh7b314tf7q3o1i
* plugins.d/password-prompt.c (conflict_detection): Check for both
"plymouth" and
"plymouthd".
"plymouth" and
"plymouthd".
- files removed:
- debian/mandos-client.examples
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python2.7
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 Björn Påhlsson
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
from future_builtins import *
38
39
try:
40
import SocketServer as socketserver
41
except ImportError:
42
import socketserver
37
import SocketServer as socketserver
43
38
import socket
44
import argparse
39
import optparse
45
40
import datetime
46
41
import errno
47
42
import gnutls.crypto
50
45
import gnutls.library.functions
51
46
import gnutls.library.constants
52
47
import gnutls.library.types
53
try:
54
import ConfigParser as configparser
55
except ImportError:
56
import configparser
48
import ConfigParser as configparser
57
49
import sys
58
50
import re
59
51
import os
68
60
import struct
69
61
import fcntl
70
62
import functools
71
try:
72
import cPickle as pickle
73
except ImportError:
74
import pickle
63
import cPickle as pickle
75
64
import multiprocessing
76
import types
77
import binascii
78
import tempfile
79
import itertools
80
import collections
81
import codecs
82
65
83
66
import dbus
84
67
import dbus.service
85
try:
86
import gobject
87
except ImportError:
88
from gi.repository import GObject as gobject
68
import gobject
89
69
import avahi
90
70
from dbus.mainloop.glib import DBusGMainLoop
91
71
import ctypes
101
81
except ImportError:
102
82
SO_BINDTODEVICE = None
103
83
104
if sys.version_info.major == 2:
105
str = unicode
106
107
version = "1.6.9"
108
stored_state_file = "clients.pickle"
109
110
logger = logging.getLogger()
111
syslogger = None
112
113
try:
114
if_nametoindex = ctypes.cdll.LoadLibrary(
115
ctypes.util.find_library("c")).if_nametoindex
116
except (OSError, AttributeError):
117
118
def if_nametoindex(interface):
119
"Get an interface index the hard way, i.e. using fcntl()"
120
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
121
with contextlib.closing(socket.socket()) as s:
122
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
123
struct.pack(b"16s16x", interface))
124
interface_index = struct.unpack("I", ifreq[16:20])[0]
125
return interface_index
126
127
128
def initlogger(debug, level=logging.WARNING):
129
"""init logger and add loglevel"""
130
131
global syslogger
132
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
135
syslogger.setFormatter(logging.Formatter
136
('Mandos [%(process)d]: %(levelname)s:'
137
' %(message)s'))
138
logger.addHandler(syslogger)
139
140
if debug:
141
console = logging.StreamHandler()
142
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
143
' [%(process)d]:'
144
' %(levelname)s:'
145
' %(message)s'))
146
logger.addHandler(console)
147
logger.setLevel(level)
148
149
150
class PGPError(Exception):
151
"""Exception if encryption/decryption fails"""
152
pass
153
154
155
class PGPEngine(object):
156
"""A simple class for OpenPGP symmetric encryption & decryption"""
157
158
def __init__(self):
159
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
160
self.gnupgargs = ['--batch',
161
'--home', self.tempdir,
162
'--force-mdc',
163
'--quiet',
164
'--no-use-agent']
165
166
def __enter__(self):
167
return self
168
169
def __exit__(self, exc_type, exc_value, traceback):
170
self._cleanup()
171
return False
172
173
def __del__(self):
174
self._cleanup()
175
176
def _cleanup(self):
177
if self.tempdir is not None:
178
# Delete contents of tempdir
179
for root, dirs, files in os.walk(self.tempdir,
180
topdown = False):
181
for filename in files:
182
os.remove(os.path.join(root, filename))
183
for dirname in dirs:
184
os.rmdir(os.path.join(root, dirname))
185
# Remove tempdir
186
os.rmdir(self.tempdir)
187
self.tempdir = None
188
189
def password_encode(self, password):
190
# Passphrase can not be empty and can not contain newlines or
191
# NUL bytes. So we prefix it and hex encode it.
192
encoded = b"mandos" + binascii.hexlify(password)
193
if len(encoded) > 2048:
194
# GnuPG can't handle long passwords, so encode differently
195
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
196
.replace(b"\n", b"\\n")
197
.replace(b"\0", b"\\x00"))
198
return encoded
199
200
def encrypt(self, data, password):
201
passphrase = self.password_encode(password)
202
with tempfile.NamedTemporaryFile(
203
dir=self.tempdir) as passfile:
204
passfile.write(passphrase)
205
passfile.flush()
206
proc = subprocess.Popen(['gpg', '--symmetric',
207
'--passphrase-file',
208
passfile.name]
209
+ self.gnupgargs,
210
stdin = subprocess.PIPE,
211
stdout = subprocess.PIPE,
212
stderr = subprocess.PIPE)
213
ciphertext, err = proc.communicate(input = data)
214
if proc.returncode != 0:
215
raise PGPError(err)
216
return ciphertext
217
218
def decrypt(self, data, password):
219
passphrase = self.password_encode(password)
220
with tempfile.NamedTemporaryFile(
221
dir = self.tempdir) as passfile:
222
passfile.write(passphrase)
223
passfile.flush()
224
proc = subprocess.Popen(['gpg', '--decrypt',
225
'--passphrase-file',
226
passfile.name]
227
+ self.gnupgargs,
228
stdin = subprocess.PIPE,
229
stdout = subprocess.PIPE,
230
stderr = subprocess.PIPE)
231
decrypted_plaintext, err = proc.communicate(input = data)
232
if proc.returncode != 0:
233
raise PGPError(err)
234
return decrypted_plaintext
235
84
85
version = "1.2.3"
86
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
89
syslogger = (logging.handlers.SysLogHandler
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
94
' %(message)s'))
95
logger.addHandler(syslogger)
96
97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
101
logger.addHandler(console)
236
102
237
103
class AvahiError(Exception):
238
104
def __init__(self, value, *args, **kwargs):
239
105
self.value = value
240
return super(AvahiError, self).__init__(value, *args,
241
**kwargs)
242
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
243
109
244
110
class AvahiServiceError(AvahiError):
245
111
pass
246
112
247
248
113
class AvahiGroupError(AvahiError):
249
114
pass
250
115
257
122
Used to optionally bind to the specified interface.
258
123
name: string; Example: 'Mandos'
259
124
type: string; Example: '_mandos._tcp'.
260
See <https://www.iana.org/assignments/service-names-port-numbers>
125
See <http://www.dns-sd.org/ServiceTypes.html>
261
126
port: integer; what port to announce
262
127
TXT: list of strings; TXT record for the service
263
128
domain: string; Domain to publish on, default to .local if empty.
269
134
server: D-Bus Server
270
135
bus: dbus.SystemBus()
271
136
"""
272
273
def __init__(self,
274
interface = avahi.IF_UNSPEC,
275
name = None,
276
servicetype = None,
277
port = None,
278
TXT = None,
279
domain = "",
280
host = "",
281
max_renames = 32768,
282
protocol = avahi.PROTO_UNSPEC,
283
bus = None):
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
servicetype = None, port = None, TXT = None,
139
domain = "", host = "", max_renames = 32768,
140
protocol = avahi.PROTO_UNSPEC, bus = None):
284
141
self.interface = interface
285
142
self.name = name
286
143
self.type = servicetype
294
151
self.group = None # our entry group
295
152
self.server = None
296
153
self.bus = bus
297
self.entry_group_state_changed_match = None
298
299
def rename(self, remove=True):
154
def rename(self):
300
155
"""Derived from the Avahi example code"""
301
156
if self.rename_count >= self.max_renames:
302
157
logger.critical("No suitable Zeroconf service name found"
303
158
" after %i retries, exiting.",
304
159
self.rename_count)
305
160
raise AvahiServiceError("Too many renames")
306
self.name = str(
307
self.server.GetAlternativeServiceName(self.name))
308
self.rename_count += 1
161
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
309
162
logger.info("Changing Zeroconf service name to %r ...",
310
163
self.name)
311
if remove:
312
self.remove()
164
syslogger.setFormatter(logging.Formatter
165
('Mandos (%s) [%%(process)d]:'
166
' %%(levelname)s: %%(message)s'
167
% self.name))
168
self.remove()
313
169
try:
314
170
self.add()
315
except dbus.exceptions.DBusException as error:
316
if (error.get_dbus_name()
317
== "org.freedesktop.Avahi.CollisionError"):
318
logger.info("Local Zeroconf service name collision.")
319
return self.rename(remove=False)
320
else:
321
logger.critical("D-Bus Exception", exc_info=error)
322
self.cleanup()
323
os._exit(1)
324
171
except dbus.exceptions.DBusException, error:
172
logger.critical("DBusException: %s", error)
173
self.cleanup()
174
os._exit(1)
175
self.rename_count += 1
325
176
def remove(self):
326
177
"""Derived from the Avahi example code"""
327
if self.entry_group_state_changed_match is not None:
328
self.entry_group_state_changed_match.remove()
329
self.entry_group_state_changed_match = None
330
178
if self.group is not None:
331
179
self.group.Reset()
332
333
180
def add(self):
334
181
"""Derived from the Avahi example code"""
335
self.remove()
336
182
if self.group is None:
337
183
self.group = dbus.Interface(
338
184
self.bus.get_object(avahi.DBUS_NAME,
339
185
self.server.EntryGroupNew()),
340
186
avahi.DBUS_INTERFACE_ENTRY_GROUP)
341
self.entry_group_state_changed_match = (
342
self.group.connect_to_signal(
343
'StateChanged', self.entry_group_state_changed))
187
self.group.connect_to_signal('StateChanged',
188
self
189
.entry_group_state_changed)
344
190
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
345
191
self.name, self.type)
346
192
self.group.AddService(
352
198
dbus.UInt16(self.port),
353
199
avahi.string_array_to_txt_array(self.TXT))
354
200
self.group.Commit()
355
356
201
def entry_group_state_changed(self, state, error):
357
202
"""Derived from the Avahi example code"""
358
203
logger.debug("Avahi entry group state change: %i", state)
364
209
self.rename()
365
210
elif state == avahi.ENTRY_GROUP_FAILURE:
366
211
logger.critical("Avahi: Error in group state changed %s",
367
str(error))
368
raise AvahiGroupError("State changed: {!s}".format(error))
369
212
unicode(error))
213
raise AvahiGroupError("State changed: %s"
214
% unicode(error))
370
215
def cleanup(self):
371
216
"""Derived from the Avahi example code"""
372
217
if self.group is not None:
373
try:
374
self.group.Free()
375
except (dbus.exceptions.UnknownMethodException,
376
dbus.exceptions.DBusException):
377
pass
218
self.group.Free()
378
219
self.group = None
379
self.remove()
380
381
def server_state_changed(self, state, error=None):
220
def server_state_changed(self, state):
382
221
"""Derived from the Avahi example code"""
383
222
logger.debug("Avahi server state change: %i", state)
384
bad_states = {
385
avahi.SERVER_INVALID: "Zeroconf server invalid",
386
avahi.SERVER_REGISTERING: None,
387
avahi.SERVER_COLLISION: "Zeroconf server name collision",
388
avahi.SERVER_FAILURE: "Zeroconf server failure",
389
}
390
if state in bad_states:
391
if bad_states[state] is not None:
392
if error is None:
393
logger.error(bad_states[state])
394
else:
395
logger.error(bad_states[state] + ": %r", error)
396
self.cleanup()
223
if state == avahi.SERVER_COLLISION:
224
logger.error("Zeroconf server name collision")
225
self.remove()
397
226
elif state == avahi.SERVER_RUNNING:
398
try:
399
self.add()
400
except dbus.exceptions.DBusException as error:
401
if (error.get_dbus_name()
402
== "org.freedesktop.Avahi.CollisionError"):
403
logger.info("Local Zeroconf service name"
404
" collision.")
405
return self.rename(remove=False)
406
else:
407
logger.critical("D-Bus Exception", exc_info=error)
408
self.cleanup()
409
os._exit(1)
410
else:
411
if error is None:
412
logger.debug("Unknown state: %r", state)
413
else:
414
logger.debug("Unknown state: %r: %r", state, error)
415
227
self.add()
416
228
def activate(self):
417
229
"""Derived from the Avahi example code"""
418
230
if self.server is None:
419
231
self.server = dbus.Interface(
420
232
self.bus.get_object(avahi.DBUS_NAME,
421
avahi.DBUS_PATH_SERVER,
422
follow_name_owner_changes=True),
233
avahi.DBUS_PATH_SERVER),
423
234
avahi.DBUS_INTERFACE_SERVER)
424
235
self.server.connect_to_signal("StateChanged",
425
self.server_state_changed)
236
self.server_state_changed)
426
237
self.server_state_changed(self.server.GetState())
427
238
428
239
429
class AvahiServiceToSyslog(AvahiService):
430
def rename(self, *args, **kwargs):
431
"""Add the new name to the syslog messages"""
432
ret = AvahiService.rename(self, *args, **kwargs)
433
syslogger.setFormatter(logging.Formatter(
434
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
435
.format(self.name)))
436
return ret
437
438
def call_pipe(connection, # : multiprocessing.Connection
439
func, *args, **kwargs):
440
"""This function is meant to be called by multiprocessing.Process
441
442
This function runs func(*args, **kwargs), and writes the resulting
443
return value on the provided multiprocessing.Connection.
444
"""
445
connection.send(func(*args, **kwargs))
446
connection.close()
447
448
240
class Client(object):
449
241
"""A representation of a client host served by this server.
450
242
451
243
Attributes:
452
approved: bool(); 'None' if not yet approved/disapproved
244
_approved: bool(); 'None' if not yet approved/disapproved
453
245
approval_delay: datetime.timedelta(); Time to wait for approval
454
246
approval_duration: datetime.timedelta(); Duration of one approval
455
247
checker: subprocess.Popen(); a running checker process used
462
254
instance %(name)s can be used in the command.
463
255
checker_initiator_tag: a gobject event source tag, or None
464
256
created: datetime.datetime(); (UTC) object creation
465
client_structure: Object describing what attributes a client has
466
and is used for storing the client at exit
467
257
current_checker_command: string; current running checker_command
258
disable_hook: If set, called by disable() as disable_hook(self)
468
259
disable_initiator_tag: a gobject event source tag, or None
469
260
enabled: bool()
470
261
fingerprint: string (40 or 32 hexadecimal digits); used to
473
264
interval: datetime.timedelta(); How often to start a new checker
474
265
last_approval_request: datetime.datetime(); (UTC) or None
475
266
last_checked_ok: datetime.datetime(); (UTC) or None
476
last_checker_status: integer between 0 and 255 reflecting exit
477
status of last checker. -1 reflects crashed
478
checker, -2 means no checker completed yet.
479
last_checker_signal: The signal which killed the last checker, if
480
last_checker_status is -1
481
last_enabled: datetime.datetime(); (UTC) or None
267
last_enabled: datetime.datetime(); (UTC)
482
268
name: string; from the config file, used in log messages and
483
269
D-Bus identifiers
484
270
secret: bytestring; sent verbatim (over TLS) to client
485
271
timeout: datetime.timedelta(); How long from last_checked_ok
486
272
until this client is disabled
487
extended_timeout: extra long timeout when secret has been sent
488
273
runtime_expansions: Allowed attributes for runtime expansion.
489
expires: datetime.datetime(); time (UTC) when a client will be
490
disabled, or None
491
server_settings: The server_settings dict from main()
492
274
"""
493
275
494
276
runtime_expansions = ("approval_delay", "approval_duration",
495
"created", "enabled", "expires",
496
"fingerprint", "host", "interval",
497
"last_approval_request", "last_checked_ok",
277
"created", "enabled", "fingerprint",
278
"host", "interval", "last_checked_ok",
498
279
"last_enabled", "name", "timeout")
499
client_defaults = {
500
"timeout": "PT5M",
501
"extended_timeout": "PT15M",
502
"interval": "PT2M",
503
"checker": "fping -q -- %%(host)s",
504
"host": "",
505
"approval_delay": "PT0S",
506
"approval_duration": "PT1S",
507
"approved_by_default": "True",
508
"enabled": "True",
509
}
510
280
511
281
@staticmethod
512
def config_parser(config):
513
"""Construct a new dict of client settings of this form:
514
{ client_name: {setting_name: value, ...}, ...}
515
with exceptions for any special settings as defined above.
516
NOTE: Must be a pure function. Must return the same result
517
value given the same arguments.
518
"""
519
settings = {}
520
for client_name in config.sections():
521
section = dict(config.items(client_name))
522
client = settings[client_name] = {}
523
524
client["host"] = section["host"]
525
# Reformat values from string types to Python types
526
client["approved_by_default"] = config.getboolean(
527
client_name, "approved_by_default")
528
client["enabled"] = config.getboolean(client_name,
529
"enabled")
530
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the
533
# fingerprint() function
534
client["fingerprint"] = (section["fingerprint"].upper()
535
.replace(" ", ""))
536
if "secret" in section:
537
client["secret"] = section["secret"].decode("base64")
538
elif "secfile" in section:
539
with open(os.path.expanduser(os.path.expandvars
540
(section["secfile"])),
541
"rb") as secfile:
542
client["secret"] = secfile.read()
543
else:
544
raise TypeError("No secret or secfile for section {}"
545
.format(section))
546
client["timeout"] = string_to_delta(section["timeout"])
547
client["extended_timeout"] = string_to_delta(
548
section["extended_timeout"])
549
client["interval"] = string_to_delta(section["interval"])
550
client["approval_delay"] = string_to_delta(
551
section["approval_delay"])
552
client["approval_duration"] = string_to_delta(
553
section["approval_duration"])
554
client["checker_command"] = section["checker"]
555
client["last_approval_request"] = None
556
client["last_checked_ok"] = None
557
client["last_checker_status"] = -2
558
559
return settings
560
561
def __init__(self, settings, name = None, server_settings=None):
282
def _timedelta_to_milliseconds(td):
283
"Convert a datetime.timedelta() to milliseconds"
284
return ((td.days * 24 * 60 * 60 * 1000)
285
+ (td.seconds * 1000)
286
+ (td.microseconds // 1000))
287
288
def timeout_milliseconds(self):
289
"Return the 'timeout' attribute in milliseconds"
290
return self._timedelta_to_milliseconds(self.timeout)
291
292
def interval_milliseconds(self):
293
"Return the 'interval' attribute in milliseconds"
294
return self._timedelta_to_milliseconds(self.interval)
295
296
def approval_delay_milliseconds(self):
297
return self._timedelta_to_milliseconds(self.approval_delay)
298
299
def __init__(self, name = None, disable_hook=None, config=None):
300
"""Note: the 'checker' key in 'config' sets the
301
'checker_command' attribute and *not* the 'checker'
302
attribute."""
562
303
self.name = name
563
if server_settings is None:
564
server_settings = {}
565
self.server_settings = server_settings
566
# adding all client settings
567
for setting, value in settings.items():
568
setattr(self, setting, value)
569
570
if self.enabled:
571
if not hasattr(self, "last_enabled"):
572
self.last_enabled = datetime.datetime.utcnow()
573
if not hasattr(self, "expires"):
574
self.expires = (datetime.datetime.utcnow()
575
+ self.timeout)
576
else:
577
self.last_enabled = None
578
self.expires = None
579
304
if config is None:
305
config = {}
580
306
logger.debug("Creating client %r", self.name)
307
# Uppercase and remove spaces from fingerprint for later
308
# comparison purposes with return value from the fingerprint()
309
# function
310
self.fingerprint = (config["fingerprint"].upper()
311
.replace(" ", ""))
581
312
logger.debug(" Fingerprint: %s", self.fingerprint)
582
self.created = settings.get("created",
583
datetime.datetime.utcnow())
584
585
# attributes specific for this server instance
313
if "secret" in config:
314
self.secret = config["secret"].decode("base64")
315
elif "secfile" in config:
316
with open(os.path.expanduser(os.path.expandvars
317
(config["secfile"])),
318
"rb") as secfile:
319
self.secret = secfile.read()
320
else:
321
raise TypeError("No secret or secfile for client %s"
322
% self.name)
323
self.host = config.get("host", "")
324
self.created = datetime.datetime.utcnow()
325
self.enabled = False
326
self.last_approval_request = None
327
self.last_enabled = None
328
self.last_checked_ok = None
329
self.timeout = string_to_delta(config["timeout"])
330
self.interval = string_to_delta(config["interval"])
331
self.disable_hook = disable_hook
586
332
self.checker = None
587
333
self.checker_initiator_tag = None
588
334
self.disable_initiator_tag = None
589
335
self.checker_callback_tag = None
336
self.checker_command = config["checker"]
590
337
self.current_checker_command = None
591
self.approved = None
338
self.last_connect = None
339
self._approved = None
340
self.approved_by_default = config.get("approved_by_default",
341
True)
592
342
self.approvals_pending = 0
593
self.changedstate = multiprocessing_manager.Condition(
594
multiprocessing_manager.Lock())
595
self.client_structure = [attr
596
for attr in self.__dict__.iterkeys()
597
if not attr.startswith("_")]
598
self.client_structure.append("client_structure")
599
600
for name, t in inspect.getmembers(
601
type(self), lambda obj: isinstance(obj, property)):
602
if not name.startswith("_"):
603
self.client_structure.append(name)
343
self.approval_delay = string_to_delta(
344
config["approval_delay"])
345
self.approval_duration = string_to_delta(
346
config["approval_duration"])
347
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
604
348
605
# Send notice to process children that client state has changed
606
349
def send_changedstate(self):
607
with self.changedstate:
608
self.changedstate.notify_all()
609
350
self.changedstate.acquire()
351
self.changedstate.notify_all()
352
self.changedstate.release()
353
610
354
def enable(self):
611
355
"""Start this client's checker and timeout hooks"""
612
356
if getattr(self, "enabled", False):
613
357
# Already enabled
614
358
return
615
self.expires = datetime.datetime.utcnow() + self.timeout
616
self.enabled = True
359
self.send_changedstate()
617
360
self.last_enabled = datetime.datetime.utcnow()
618
self.init_checker()
619
self.send_changedstate()
361
# Schedule a new checker to be started an 'interval' from now,
362
# and every interval from then on.
363
self.checker_initiator_tag = (gobject.timeout_add
364
(self.interval_milliseconds(),
365
self.start_checker))
366
# Schedule a disable() when 'timeout' has passed
367
self.disable_initiator_tag = (gobject.timeout_add
368
(self.timeout_milliseconds(),
369
self.disable))
370
self.enabled = True
371
# Also start a new checker *right now*.
372
self.start_checker()
620
373
621
374
def disable(self, quiet=True):
622
375
"""Disable this client."""
623
376
if not getattr(self, "enabled", False):
624
377
return False
625
378
if not quiet:
379
self.send_changedstate()
380
if not quiet:
626
381
logger.info("Disabling client %s", self.name)
627
if getattr(self, "disable_initiator_tag", None) is not None:
382
if getattr(self, "disable_initiator_tag", False):
628
383
gobject.source_remove(self.disable_initiator_tag)
629
384
self.disable_initiator_tag = None
630
self.expires = None
631
if getattr(self, "checker_initiator_tag", None) is not None:
385
if getattr(self, "checker_initiator_tag", False):
632
386
gobject.source_remove(self.checker_initiator_tag)
633
387
self.checker_initiator_tag = None
634
388
self.stop_checker()
389
if self.disable_hook:
390
self.disable_hook(self)
635
391
self.enabled = False
636
if not quiet:
637
self.send_changedstate()
638
392
# Do not run this again if called by a gobject.timeout_add
639
393
return False
640
394
641
395
def __del__(self):
396
self.disable_hook = None
642
397
self.disable()
643
398
644
def init_checker(self):
645
# Schedule a new checker to be started an 'interval' from now,
646
# and every interval from then on.
647
if self.checker_initiator_tag is not None:
648
gobject.source_remove(self.checker_initiator_tag)
649
self.checker_initiator_tag = gobject.timeout_add(
650
int(self.interval.total_seconds() * 1000),
651
self.start_checker)
652
# Schedule a disable() when 'timeout' has passed
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = gobject.timeout_add(
656
int(self.timeout.total_seconds() * 1000), self.disable)
657
# Also start a new checker *right now*.
658
self.start_checker()
659
660
def checker_callback(self, source, condition, connection,
661
command):
399
def checker_callback(self, pid, condition, command):
662
400
"""The checker has completed, so take appropriate actions."""
663
401
self.checker_callback_tag = None
664
402
self.checker = None
665
# Read return code from connection (see call_pipe)
666
returncode = connection.recv()
667
connection.close()
668
669
if returncode >= 0:
670
self.last_checker_status = returncode
671
self.last_checker_signal = None
672
if self.last_checker_status == 0:
403
if os.WIFEXITED(condition):
404
exitstatus = os.WEXITSTATUS(condition)
405
if exitstatus == 0:
673
406
logger.info("Checker for %(name)s succeeded",
674
407
vars(self))
675
408
self.checked_ok()
676
409
else:
677
logger.info("Checker for %(name)s failed", vars(self))
410
logger.info("Checker for %(name)s failed",
411
vars(self))
678
412
else:
679
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
681
413
logger.warning("Checker for %(name)s crashed?",
682
414
vars(self))
683
return False
684
415
685
416
def checked_ok(self):
686
"""Assert that the client has been seen, alive and well."""
417
"""Bump up the timeout for this client.
418
419
This should only be called when the client has been seen,
420
alive and well.
421
"""
687
422
self.last_checked_ok = datetime.datetime.utcnow()
688
self.last_checker_status = 0
689
self.last_checker_signal = None
690
self.bump_timeout()
691
692
def bump_timeout(self, timeout=None):
693
"""Bump up the timeout for this client."""
694
if timeout is None:
695
timeout = self.timeout
696
if self.disable_initiator_tag is not None:
697
gobject.source_remove(self.disable_initiator_tag)
698
self.disable_initiator_tag = None
699
if getattr(self, "enabled", False):
700
self.disable_initiator_tag = gobject.timeout_add(
701
int(timeout.total_seconds() * 1000), self.disable)
702
self.expires = datetime.datetime.utcnow() + timeout
423
gobject.source_remove(self.disable_initiator_tag)
424
self.disable_initiator_tag = (gobject.timeout_add
425
(self.timeout_milliseconds(),
426
self.disable))
703
427
704
428
def need_approval(self):
705
429
self.last_approval_request = datetime.datetime.utcnow()
710
434
If a checker already exists, leave it running and do
711
435
nothing."""
712
436
# The reason for not killing a running checker is that if we
713
# did that, and if a checker (for some reason) started running
714
# slowly and taking more than 'interval' time, then the client
715
# would inevitably timeout, since no checker would get a
716
# chance to run to completion. If we instead leave running
437
# did that, then if a checker (for some reason) started
438
# running slowly and taking more than 'interval' time, the
439
# client would inevitably timeout, since no checker would get
440
# a chance to run to completion. If we instead leave running
717
441
# checkers alone, the checker would have to take more time
718
442
# than 'timeout' for the client to be disabled, which is as it
719
443
# should be.
720
444
721
if self.checker is not None and not self.checker.is_alive():
722
logger.warning("Checker was not alive; joining")
723
self.checker.join()
724
self.checker = None
445
# If a checker exists, make sure it is not a zombie
446
try:
447
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
448
except (AttributeError, OSError), error:
449
if (isinstance(error, OSError)
450
and error.errno != errno.ECHILD):
451
raise error
452
else:
453
if pid:
454
logger.warning("Checker was a zombie")
455
gobject.source_remove(self.checker_callback_tag)
456
self.checker_callback(pid, status,
457
self.current_checker_command)
725
458
# Start a new checker if needed
726
459
if self.checker is None:
727
# Escape attributes for the shell
728
escaped_attrs = {
729
attr: re.escape(str(getattr(self, attr)))
730
for attr in self.runtime_expansions }
731
460
try:
732
command = self.checker_command % escaped_attrs
733
except TypeError as error:
734
logger.error('Could not format string "%s"',
735
self.checker_command,
736
exc_info=error)
737
return True # Try again later
461
# In case checker_command has exactly one % operator
462
command = self.checker_command % self.host
463
except TypeError:
464
# Escape attributes for the shell
465
escaped_attrs = dict(
466
(attr,
467
re.escape(unicode(str(getattr(self, attr, "")),
468
errors=
469
'replace')))
470
for attr in
471
self.runtime_expansions)
472
473
try:
474
command = self.checker_command % escaped_attrs
475
except TypeError, error:
476
logger.error('Could not format string "%s":'
477
' %s', self.checker_command, error)
478
return True # Try again later
738
479
self.current_checker_command = command
739
logger.info("Starting checker %r for %s", command,
740
self.name)
741
# We don't need to redirect stdout and stderr, since
742
# in normal mode, that is already done by daemon(),
743
# and in debug mode we don't want to. (Stdin is
744
# always replaced by /dev/null.)
745
# The exception is when not debugging but nevertheless
746
# running in the foreground; use the previously
747
# created wnull.
748
popen_args = { "close_fds": True,
749
"shell": True,
750
"cwd": "/" }
751
if (not self.server_settings["debug"]
752
and self.server_settings["foreground"]):
753
popen_args.update({"stdout": wnull,
754
"stderr": wnull })
755
pipe = multiprocessing.Pipe(duplex = False)
756
self.checker = multiprocessing.Process(
757
target = call_pipe,
758
args = (pipe[1], subprocess.call, command),
759
kwargs = popen_args)
760
self.checker.start()
761
self.checker_callback_tag = gobject.io_add_watch(
762
pipe[0].fileno(), gobject.IO_IN,
763
self.checker_callback, pipe[0], command)
480
try:
481
logger.info("Starting checker %r for %s",
482
command, self.name)
483
# We don't need to redirect stdout and stderr, since
484
# in normal mode, that is already done by daemon(),
485
# and in debug mode we don't want to. (Stdin is
486
# always replaced by /dev/null.)
487
self.checker = subprocess.Popen(command,
488
close_fds=True,
489
shell=True, cwd="/")
490
self.checker_callback_tag = (gobject.child_watch_add
491
(self.checker.pid,
492
self.checker_callback,
493
data=command))
494
# The checker may have completed before the gobject
495
# watch was added. Check for this.
496
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
497
if pid:
498
gobject.source_remove(self.checker_callback_tag)
499
self.checker_callback(pid, status, command)
500
except OSError, error:
501
logger.error("Failed to start subprocess: %s",
502
error)
764
503
# Re-run this periodically if run by gobject.timeout_add
765
504
return True
766
505
772
511
if getattr(self, "checker", None) is None:
773
512
return
774
513
logger.debug("Stopping checker for %(name)s", vars(self))
775
self.checker.terminate()
514
try:
515
os.kill(self.checker.pid, signal.SIGTERM)
516
#time.sleep(0.5)
517
#if self.checker.poll() is None:
518
# os.kill(self.checker.pid, signal.SIGKILL)
519
except OSError, error:
520
if error.errno != errno.ESRCH: # No such process
521
raise
776
522
self.checker = None
777
523
778
779
def dbus_service_property(dbus_interface,
780
signature="v",
781
access="readwrite",
782
byte_arrays=False):
524
def dbus_service_property(dbus_interface, signature="v",
525
access="readwrite", byte_arrays=False):
783
526
"""Decorators for marking methods of a DBusObjectWithProperties to
784
527
become properties on the D-Bus.
785
528
794
537
# "Set" method, so we fail early here:
795
538
if byte_arrays and signature != "ay":
796
539
raise ValueError("Byte arrays not supported for non-'ay'"
797
" signature {!r}".format(signature))
798
540
" signature %r" % signature)
799
541
def decorator(func):
800
542
func._dbus_is_property = True
801
543
func._dbus_interface = dbus_interface
806
548
func._dbus_name = func._dbus_name[:-14]
807
549
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
808
550
return func
809
810
return decorator
811
812
813
def dbus_interface_annotations(dbus_interface):
814
"""Decorator for marking functions returning interface annotations
815
816
Usage:
817
818
@dbus_interface_annotations("org.example.Interface")
819
def _foo(self): # Function name does not matter
820
return {"org.freedesktop.DBus.Deprecated": "true",
821
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
"false"}
823
"""
824
825
def decorator(func):
826
func._dbus_is_interface = True
827
func._dbus_interface = dbus_interface
828
func._dbus_name = dbus_interface
829
return func
830
831
return decorator
832
833
834
def dbus_annotations(annotations):
835
"""Decorator to annotate D-Bus methods, signals or properties
836
Usage:
837
838
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
839
"org.freedesktop.DBus.Property."
840
"EmitsChangedSignal": "false"})
841
@dbus_service_property("org.example.Interface", signature="b",
842
access="r")
843
def Property_dbus_property(self):
844
return dbus.Boolean(False)
845
"""
846
847
def decorator(func):
848
func._dbus_annotations = annotations
849
return func
850
851
551
return decorator
852
552
853
553
854
554
class DBusPropertyException(dbus.exceptions.DBusException):
855
555
"""A base class for D-Bus property-related exceptions
856
556
"""
857
pass
557
def __unicode__(self):
558
return unicode(str(self))
858
559
859
560
860
561
class DBusPropertyAccessException(DBusPropertyException):
871
572
872
573
class DBusObjectWithProperties(dbus.service.Object):
873
574
"""A D-Bus object with properties.
874
575
875
576
Classes inheriting from this can use the dbus_service_property
876
577
decorator to expose methods as D-Bus properties. It exposes the
877
578
standard Get(), Set(), and GetAll() methods on the D-Bus.
878
579
"""
879
580
880
581
@staticmethod
881
def _is_dbus_thing(thing):
882
"""Returns a function testing if an attribute is a D-Bus thing
883
884
If called like _is_dbus_thing("method") it returns a function
885
suitable for use as predicate to inspect.getmembers().
886
"""
887
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
888
False)
582
def _is_dbus_property(obj):
583
return getattr(obj, "_dbus_is_property", False)
889
584
890
def _get_all_dbus_things(self, thing):
585
def _get_all_dbus_properties(self):
891
586
"""Returns a generator of (name, attribute) pairs
892
587
"""
893
return ((getattr(athing.__get__(self), "_dbus_name", name),
894
athing.__get__(self))
895
for cls in self.__class__.__mro__
896
for name, athing in
897
inspect.getmembers(cls, self._is_dbus_thing(thing)))
588
return ((prop._dbus_name, prop)
589
for name, prop in
590
inspect.getmembers(self, self._is_dbus_property))
898
591
899
592
def _get_dbus_property(self, interface_name, property_name):
900
593
"""Returns a bound method if one exists which is a D-Bus
901
594
property with the specified name and interface.
902
595
"""
903
for cls in self.__class__.__mro__:
904
for name, value in inspect.getmembers(
905
cls, self._is_dbus_thing("property")):
906
if (value._dbus_name == property_name
907
and value._dbus_interface == interface_name):
908
return value.__get__(self)
909
596
for name in (property_name,
597
property_name + "_dbus_property"):
598
prop = getattr(self, name, None)
599
if (prop is None
600
or not self._is_dbus_property(prop)
601
or prop._dbus_name != property_name
602
or (interface_name and prop._dbus_interface
603
and interface_name != prop._dbus_interface)):
604
continue
605
return prop
910
606
# No such property
911
raise DBusPropertyNotFound("{}:{}.{}".format(
912
self.dbus_object_path, interface_name, property_name))
607
raise DBusPropertyNotFound(self.dbus_object_path + ":"
608
+ interface_name + "."
609
+ property_name)
913
610
914
@dbus.service.method(dbus.PROPERTIES_IFACE,
915
in_signature="ss",
611
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
916
612
out_signature="v")
917
613
def Get(self, interface_name, property_name):
918
614
"""Standard D-Bus property Get() method, see D-Bus standard.
936
632
# The byte_arrays option is not supported yet on
937
633
# signatures other than "ay".
938
634
if prop._dbus_signature != "ay":
939
raise ValueError("Byte arrays not supported for non-"
940
"'ay' signature {!r}"
941
.format(prop._dbus_signature))
942
value = dbus.ByteArray(b''.join(chr(byte)
943
for byte in value))
635
raise ValueError
636
value = dbus.ByteArray(''.join(unichr(byte)
637
for byte in value))
944
638
prop(value)
945
639
946
@dbus.service.method(dbus.PROPERTIES_IFACE,
947
in_signature="s",
640
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
948
641
out_signature="a{sv}")
949
642
def GetAll(self, interface_name):
950
643
"""Standard D-Bus property GetAll() method, see D-Bus
951
644
standard.
952
645
953
646
Note: Will not include properties with access="write".
954
647
"""
955
properties = {}
956
for name, prop in self._get_all_dbus_things("property"):
648
all = {}
649
for name, prop in self._get_all_dbus_properties():
957
650
if (interface_name
958
651
and interface_name != prop._dbus_interface):
959
652
# Interface non-empty but did not match
963
656
continue
964
657
value = prop()
965
658
if not hasattr(value, "variant_level"):
966
properties[name] = value
659
all[name] = value
967
660
continue
968
properties[name] = type(value)(
969
value, variant_level = value.variant_level + 1)
970
return dbus.Dictionary(properties, signature="sv")
971
972
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
973
def PropertiesChanged(self, interface_name, changed_properties,
974
invalidated_properties):
975
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
976
standard.
977
"""
978
pass
661
all[name] = type(value)(value, variant_level=
662
value.variant_level+1)
663
return dbus.Dictionary(all, signature="sv")
979
664
980
665
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
981
666
out_signature="s",
982
667
path_keyword='object_path',
983
668
connection_keyword='connection')
984
669
def Introspect(self, object_path, connection):
985
"""Overloading of standard D-Bus method.
986
987
Inserts property tags and interface annotation tags.
670
"""Standard D-Bus method, overloaded to insert property tags.
988
671
"""
989
672
xmlstring = dbus.service.Object.Introspect(self, object_path,
990
673
connection)
991
674
try:
992
675
document = xml.dom.minidom.parseString(xmlstring)
993
994
676
def make_tag(document, name, prop):
995
677
e = document.createElement("property")
996
678
e.setAttribute("name", name)
997
679
e.setAttribute("type", prop._dbus_signature)
998
680
e.setAttribute("access", prop._dbus_access)
999
681
return e
1000
1001
682
for if_tag in document.getElementsByTagName("interface"):
1002
# Add property tags
1003
683
for tag in (make_tag(document, name, prop)
1004
684
for name, prop
1005
in self._get_all_dbus_things("property")
685
in self._get_all_dbus_properties()
1006
686
if prop._dbus_interface
1007
687
== if_tag.getAttribute("name")):
1008
688
if_tag.appendChild(tag)
1009
# Add annotation tags
1010
for typ in ("method", "signal", "property"):
1011
for tag in if_tag.getElementsByTagName(typ):
1012
annots = dict()
1013
for name, prop in (self.
1014
_get_all_dbus_things(typ)):
1015
if (name == tag.getAttribute("name")
1016
and prop._dbus_interface
1017
== if_tag.getAttribute("name")):
1018
annots.update(getattr(
1019
prop, "_dbus_annotations", {}))
1020
for name, value in annots.items():
1021
ann_tag = document.createElement(
1022
"annotation")
1023
ann_tag.setAttribute("name", name)
1024
ann_tag.setAttribute("value", value)
1025
tag.appendChild(ann_tag)
1026
# Add interface annotation tags
1027
for annotation, value in dict(
1028
itertools.chain.from_iterable(
1029
annotations().items()
1030
for name, annotations
1031
in self._get_all_dbus_things("interface")
1032
if name == if_tag.getAttribute("name")
1033
)).items():
1034
ann_tag = document.createElement("annotation")
1035
ann_tag.setAttribute("name", annotation)
1036
ann_tag.setAttribute("value", value)
1037
if_tag.appendChild(ann_tag)
1038
689
# Add the names to the return values for the
1039
690
# "org.freedesktop.DBus.Properties" methods
1040
691
if (if_tag.getAttribute("name")
1053
704
xmlstring = document.toxml("utf-8")
1054
705
document.unlink()
1055
706
except (AttributeError, xml.dom.DOMException,
1056
xml.parsers.expat.ExpatError) as error:
707
xml.parsers.expat.ExpatError), error:
1057
708
logger.error("Failed to override Introspection method",
1058
exc_info=error)
709
error)
1059
710
return xmlstring
1060
711
1061
712
1062
def datetime_to_dbus(dt, variant_level=0):
1063
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1064
if dt is None:
1065
return dbus.String("", variant_level = variant_level)
1066
return dbus.String(dt.isoformat(), variant_level=variant_level)
1067
1068
1069
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1070
"""A class decorator; applied to a subclass of
1071
dbus.service.Object, it will add alternate D-Bus attributes with
1072
interface names according to the "alt_interface_names" mapping.
1073
Usage:
1074
1075
@alternate_dbus_interfaces({"org.example.Interface":
1076
"net.example.AlternateInterface"})
1077
class SampleDBusObject(dbus.service.Object):
1078
@dbus.service.method("org.example.Interface")
1079
def SampleDBusMethod():
1080
pass
1081
1082
The above "SampleDBusMethod" on "SampleDBusObject" will be
1083
reachable via two interfaces: "org.example.Interface" and
1084
"net.example.AlternateInterface", the latter of which will have
1085
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1086
"true", unless "deprecate" is passed with a False value.
1087
1088
This works for methods and signals, and also for D-Bus properties
1089
(from DBusObjectWithProperties) and interfaces (from the
1090
dbus_interface_annotations decorator).
1091
"""
1092
1093
def wrapper(cls):
1094
for orig_interface_name, alt_interface_name in (
1095
alt_interface_names.items()):
1096
attr = {}
1097
interface_names = set()
1098
# Go though all attributes of the class
1099
for attrname, attribute in inspect.getmembers(cls):
1100
# Ignore non-D-Bus attributes, and D-Bus attributes
1101
# with the wrong interface name
1102
if (not hasattr(attribute, "_dbus_interface")
1103
or not attribute._dbus_interface.startswith(
1104
orig_interface_name)):
1105
continue
1106
# Create an alternate D-Bus interface name based on
1107
# the current name
1108
alt_interface = attribute._dbus_interface.replace(
1109
orig_interface_name, alt_interface_name)
1110
interface_names.add(alt_interface)
1111
# Is this a D-Bus signal?
1112
if getattr(attribute, "_dbus_is_signal", False):
1113
if sys.version_info.major == 2:
1114
# Extract the original non-method undecorated
1115
# function by black magic
1116
nonmethod_func = (dict(
1117
zip(attribute.func_code.co_freevars,
1118
attribute.__closure__))
1119
["func"].cell_contents)
1120
else:
1121
nonmethod_func = attribute
1122
# Create a new, but exactly alike, function
1123
# object, and decorate it to be a new D-Bus signal
1124
# with the alternate D-Bus interface name
1125
if sys.version_info.major == 2:
1126
new_function = types.FunctionType(
1127
nonmethod_func.func_code,
1128
nonmethod_func.func_globals,
1129
nonmethod_func.func_name,
1130
nonmethod_func.func_defaults,
1131
nonmethod_func.func_closure)
1132
else:
1133
new_function = types.FunctionType(
1134
nonmethod_func.__code__,
1135
nonmethod_func.__globals__,
1136
nonmethod_func.__name__,
1137
nonmethod_func.__defaults__,
1138
nonmethod_func.__closure__)
1139
new_function = (dbus.service.signal(
1140
alt_interface,
1141
attribute._dbus_signature)(new_function))
1142
# Copy annotations, if any
1143
try:
1144
new_function._dbus_annotations = dict(
1145
attribute._dbus_annotations)
1146
except AttributeError:
1147
pass
1148
# Define a creator of a function to call both the
1149
# original and alternate functions, so both the
1150
# original and alternate signals gets sent when
1151
# the function is called
1152
def fixscope(func1, func2):
1153
"""This function is a scope container to pass
1154
func1 and func2 to the "call_both" function
1155
outside of its arguments"""
1156
1157
def call_both(*args, **kwargs):
1158
"""This function will emit two D-Bus
1159
signals by calling func1 and func2"""
1160
func1(*args, **kwargs)
1161
func2(*args, **kwargs)
1162
1163
return call_both
1164
# Create the "call_both" function and add it to
1165
# the class
1166
attr[attrname] = fixscope(attribute, new_function)
1167
# Is this a D-Bus method?
1168
elif getattr(attribute, "_dbus_is_method", False):
1169
# Create a new, but exactly alike, function
1170
# object. Decorate it to be a new D-Bus method
1171
# with the alternate D-Bus interface name. Add it
1172
# to the class.
1173
attr[attrname] = (
1174
dbus.service.method(
1175
alt_interface,
1176
attribute._dbus_in_signature,
1177
attribute._dbus_out_signature)
1178
(types.FunctionType(attribute.func_code,
1179
attribute.func_globals,
1180
attribute.func_name,
1181
attribute.func_defaults,
1182
attribute.func_closure)))
1183
# Copy annotations, if any
1184
try:
1185
attr[attrname]._dbus_annotations = dict(
1186
attribute._dbus_annotations)
1187
except AttributeError:
1188
pass
1189
# Is this a D-Bus property?
1190
elif getattr(attribute, "_dbus_is_property", False):
1191
# Create a new, but exactly alike, function
1192
# object, and decorate it to be a new D-Bus
1193
# property with the alternate D-Bus interface
1194
# name. Add it to the class.
1195
attr[attrname] = (dbus_service_property(
1196
alt_interface, attribute._dbus_signature,
1197
attribute._dbus_access,
1198
attribute._dbus_get_args_options
1199
["byte_arrays"])
1200
(types.FunctionType(
1201
attribute.func_code,
1202
attribute.func_globals,
1203
attribute.func_name,
1204
attribute.func_defaults,
1205
attribute.func_closure)))
1206
# Copy annotations, if any
1207
try:
1208
attr[attrname]._dbus_annotations = dict(
1209
attribute._dbus_annotations)
1210
except AttributeError:
1211
pass
1212
# Is this a D-Bus interface?
1213
elif getattr(attribute, "_dbus_is_interface", False):
1214
# Create a new, but exactly alike, function
1215
# object. Decorate it to be a new D-Bus interface
1216
# with the alternate D-Bus interface name. Add it
1217
# to the class.
1218
attr[attrname] = (
1219
dbus_interface_annotations(alt_interface)
1220
(types.FunctionType(attribute.func_code,
1221
attribute.func_globals,
1222
attribute.func_name,
1223
attribute.func_defaults,
1224
attribute.func_closure)))
1225
if deprecate:
1226
# Deprecate all alternate interfaces
1227
iname="_AlternateDBusNames_interface_annotation{}"
1228
for interface_name in interface_names:
1229
1230
@dbus_interface_annotations(interface_name)
1231
def func(self):
1232
return { "org.freedesktop.DBus.Deprecated":
1233
"true" }
1234
# Find an unused name
1235
for aname in (iname.format(i)
1236
for i in itertools.count()):
1237
if aname not in attr:
1238
attr[aname] = func
1239
break
1240
if interface_names:
1241
# Replace the class with a new subclass of it with
1242
# methods, signals, etc. as created above.
1243
cls = type(b"{}Alternate".format(cls.__name__),
1244
(cls, ), attr)
1245
return cls
1246
1247
return wrapper
1248
1249
1250
@alternate_dbus_interfaces({"se.recompile.Mandos":
1251
"se.bsnet.fukt.Mandos"})
1252
713
class ClientDBus(Client, DBusObjectWithProperties):
1253
714
"""A Client class using D-Bus
1254
715
1258
719
"""
1259
720
1260
721
runtime_expansions = (Client.runtime_expansions
1261
+ ("dbus_object_path", ))
1262
1263
_interface = "se.recompile.Mandos.Client"
722
+ ("dbus_object_path",))
1264
723
1265
724
# dbus.service.Object doesn't use super(), so we can't either.
1266
725
1267
726
def __init__(self, bus = None, *args, **kwargs):
727
self._approvals_pending = 0
1268
728
self.bus = bus
1269
729
Client.__init__(self, *args, **kwargs)
1270
730
# Only now, when this client is initialized, can it show up on
1271
731
# the D-Bus
1272
client_object_name = str(self.name).translate(
732
client_object_name = unicode(self.name).translate(
1273
733
{ord("."): ord("_"),
1274
734
ord("-"): ord("_")})
1275
self.dbus_object_path = dbus.ObjectPath(
1276
"/clients/" + client_object_name)
735
self.dbus_object_path = (dbus.ObjectPath
736
("/clients/" + client_object_name))
1277
737
DBusObjectWithProperties.__init__(self, self.bus,
1278
738
self.dbus_object_path)
1279
1280
def notifychangeproperty(transform_func, dbus_name,
1281
type_func=lambda x: x,
1282
variant_level=1,
1283
invalidate_only=False,
1284
_interface=_interface):
1285
""" Modify a variable so that it's a property which announces
1286
its changes to DBus.
1287
1288
transform_fun: Function that takes a value and a variant_level
1289
and transforms it to a D-Bus type.
1290
dbus_name: D-Bus name of the variable
1291
type_func: Function that transform the value before sending it
1292
to the D-Bus. Default: no transform
1293
variant_level: D-Bus variant level. Default: 1
1294
"""
1295
attrname = "_{}".format(dbus_name)
1296
1297
def setter(self, value):
1298
if hasattr(self, "dbus_object_path"):
1299
if (not hasattr(self, attrname) or
1300
type_func(getattr(self, attrname, None))
1301
!= type_func(value)):
1302
if invalidate_only:
1303
self.PropertiesChanged(
1304
_interface, dbus.Dictionary(),
1305
dbus.Array((dbus_name, )))
1306
else:
1307
dbus_value = transform_func(
1308
type_func(value),
1309
variant_level = variant_level)
1310
self.PropertyChanged(dbus.String(dbus_name),
1311
dbus_value)
1312
self.PropertiesChanged(
1313
_interface,
1314
dbus.Dictionary({ dbus.String(dbus_name):
1315
dbus_value }),
1316
dbus.Array())
1317
setattr(self, attrname, value)
1318
1319
return property(lambda self: getattr(self, attrname), setter)
1320
1321
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1322
approvals_pending = notifychangeproperty(dbus.Boolean,
1323
"ApprovalPending",
1324
type_func = bool)
1325
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1326
last_enabled = notifychangeproperty(datetime_to_dbus,
1327
"LastEnabled")
1328
checker = notifychangeproperty(
1329
dbus.Boolean, "CheckerRunning",
1330
type_func = lambda checker: checker is not None)
1331
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1332
"LastCheckedOK")
1333
last_checker_status = notifychangeproperty(dbus.Int16,
1334
"LastCheckerStatus")
1335
last_approval_request = notifychangeproperty(
1336
datetime_to_dbus, "LastApprovalRequest")
1337
approved_by_default = notifychangeproperty(dbus.Boolean,
1338
"ApprovedByDefault")
1339
approval_delay = notifychangeproperty(
1340
dbus.UInt64, "ApprovalDelay",
1341
type_func = lambda td: td.total_seconds() * 1000)
1342
approval_duration = notifychangeproperty(
1343
dbus.UInt64, "ApprovalDuration",
1344
type_func = lambda td: td.total_seconds() * 1000)
1345
host = notifychangeproperty(dbus.String, "Host")
1346
timeout = notifychangeproperty(
1347
dbus.UInt64, "Timeout",
1348
type_func = lambda td: td.total_seconds() * 1000)
1349
extended_timeout = notifychangeproperty(
1350
dbus.UInt64, "ExtendedTimeout",
1351
type_func = lambda td: td.total_seconds() * 1000)
1352
interval = notifychangeproperty(
1353
dbus.UInt64, "Interval",
1354
type_func = lambda td: td.total_seconds() * 1000)
1355
checker_command = notifychangeproperty(dbus.String, "Checker")
1356
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1357
invalidate_only=True)
1358
1359
del notifychangeproperty
739
740
def _get_approvals_pending(self):
741
return self._approvals_pending
742
def _set_approvals_pending(self, value):
743
old_value = self._approvals_pending
744
self._approvals_pending = value
745
bval = bool(value)
746
if (hasattr(self, "dbus_object_path")
747
and bval is not bool(old_value)):
748
dbus_bool = dbus.Boolean(bval, variant_level=1)
749
self.PropertyChanged(dbus.String("ApprovalPending"),
750
dbus_bool)
751
752
approvals_pending = property(_get_approvals_pending,
753
_set_approvals_pending)
754
del _get_approvals_pending, _set_approvals_pending
755
756
@staticmethod
757
def _datetime_to_dbus(dt, variant_level=0):
758
"""Convert a UTC datetime.datetime() to a D-Bus type."""
759
return dbus.String(dt.isoformat(),
760
variant_level=variant_level)
761
762
def enable(self):
763
oldstate = getattr(self, "enabled", False)
764
r = Client.enable(self)
765
if oldstate != self.enabled:
766
# Emit D-Bus signals
767
self.PropertyChanged(dbus.String("Enabled"),
768
dbus.Boolean(True, variant_level=1))
769
self.PropertyChanged(
770
dbus.String("LastEnabled"),
771
self._datetime_to_dbus(self.last_enabled,
772
variant_level=1))
773
return r
774
775
def disable(self, quiet = False):
776
oldstate = getattr(self, "enabled", False)
777
r = Client.disable(self, quiet=quiet)
778
if not quiet and oldstate != self.enabled:
779
# Emit D-Bus signal
780
self.PropertyChanged(dbus.String("Enabled"),
781
dbus.Boolean(False, variant_level=1))
782
return r
1360
783
1361
784
def __del__(self, *args, **kwargs):
1362
785
try:
1367
790
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1368
791
Client.__del__(self, *args, **kwargs)
1369
792
1370
def checker_callback(self, source, condition,
1371
connection, command, *args, **kwargs):
1372
ret = Client.checker_callback(self, source, condition,
1373
connection, command, *args,
1374
**kwargs)
1375
exitstatus = self.last_checker_status
1376
if exitstatus >= 0:
793
def checker_callback(self, pid, condition, command,
794
*args, **kwargs):
795
self.checker_callback_tag = None
796
self.checker = None
797
# Emit D-Bus signal
798
self.PropertyChanged(dbus.String("CheckerRunning"),
799
dbus.Boolean(False, variant_level=1))
800
if os.WIFEXITED(condition):
801
exitstatus = os.WEXITSTATUS(condition)
1377
802
# Emit D-Bus signal
1378
803
self.CheckerCompleted(dbus.Int16(exitstatus),
1379
dbus.Int64(0),
804
dbus.Int64(condition),
1380
805
dbus.String(command))
1381
806
else:
1382
807
# Emit D-Bus signal
1383
808
self.CheckerCompleted(dbus.Int16(-1),
1384
dbus.Int64(
1385
self.last_checker_signal),
809
dbus.Int64(condition),
1386
810
dbus.String(command))
1387
return ret
811
812
return Client.checker_callback(self, pid, condition, command,
813
*args, **kwargs)
814
815
def checked_ok(self, *args, **kwargs):
816
r = Client.checked_ok(self, *args, **kwargs)
817
# Emit D-Bus signal
818
self.PropertyChanged(
819
dbus.String("LastCheckedOK"),
820
(self._datetime_to_dbus(self.last_checked_ok,
821
variant_level=1)))
822
return r
823
824
def need_approval(self, *args, **kwargs):
825
r = Client.need_approval(self, *args, **kwargs)
826
# Emit D-Bus signal
827
self.PropertyChanged(
828
dbus.String("LastApprovalRequest"),
829
(self._datetime_to_dbus(self.last_approval_request,
830
variant_level=1)))
831
return r
1388
832
1389
833
def start_checker(self, *args, **kwargs):
1390
old_checker_pid = getattr(self.checker, "pid", None)
834
old_checker = self.checker
835
if self.checker is not None:
836
old_checker_pid = self.checker.pid
837
else:
838
old_checker_pid = None
1391
839
r = Client.start_checker(self, *args, **kwargs)
1392
840
# Only if new checker process was started
1393
841
if (self.checker is not None
1394
842
and old_checker_pid != self.checker.pid):
1395
843
# Emit D-Bus signal
1396
844
self.CheckerStarted(self.current_checker_command)
845
self.PropertyChanged(
846
dbus.String("CheckerRunning"),
847
dbus.Boolean(True, variant_level=1))
1397
848
return r
1398
849
850
def stop_checker(self, *args, **kwargs):
851
old_checker = getattr(self, "checker", None)
852
r = Client.stop_checker(self, *args, **kwargs)
853
if (old_checker is not None
854
and getattr(self, "checker", None) is None):
855
self.PropertyChanged(dbus.String("CheckerRunning"),
856
dbus.Boolean(False, variant_level=1))
857
return r
858
1399
859
def _reset_approved(self):
1400
self.approved = None
860
self._approved = None
1401
861
return False
1402
862
1403
863
def approve(self, value=True):
1404
self.approved = value
1405
gobject.timeout_add(int(self.approval_duration.total_seconds()
1406
* 1000), self._reset_approved)
1407
864
self.send_changedstate()
865
self._approved = value
866
gobject.timeout_add(self._timedelta_to_milliseconds
867
(self.approval_duration),
868
self._reset_approved)
869
1408
870
1409
871
## D-Bus methods, signals & properties
1410
1411
## Interfaces
872
_interface = "se.bsnet.fukt.Mandos.Client"
1412
873
1413
874
## Signals
1414
875
1425
886
pass
1426
887
1427
888
# PropertyChanged - signal
1428
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1429
889
@dbus.service.signal(_interface, signature="sv")
1430
890
def PropertyChanged(self, property, value):
1431
891
"D-Bus signal"
1462
922
# CheckedOK - method
1463
923
@dbus.service.method(_interface)
1464
924
def CheckedOK(self):
1465
self.checked_ok()
925
return self.checked_ok()
1466
926
1467
927
# Enable - method
1468
928
@dbus.service.method(_interface)
1495
955
return dbus.Boolean(bool(self.approvals_pending))
1496
956
1497
957
# ApprovedByDefault - property
1498
@dbus_service_property(_interface,
1499
signature="b",
958
@dbus_service_property(_interface, signature="b",
1500
959
access="readwrite")
1501
960
def ApprovedByDefault_dbus_property(self, value=None):
1502
961
if value is None: # get
1503
962
return dbus.Boolean(self.approved_by_default)
1504
963
self.approved_by_default = bool(value)
964
# Emit D-Bus signal
965
self.PropertyChanged(dbus.String("ApprovedByDefault"),
966
dbus.Boolean(value, variant_level=1))
1505
967
1506
968
# ApprovalDelay - property
1507
@dbus_service_property(_interface,
1508
signature="t",
969
@dbus_service_property(_interface, signature="t",
1509
970
access="readwrite")
1510
971
def ApprovalDelay_dbus_property(self, value=None):
1511
972
if value is None: # get
1512
return dbus.UInt64(self.approval_delay.total_seconds()
1513
* 1000)
973
return dbus.UInt64(self.approval_delay_milliseconds())
1514
974
self.approval_delay = datetime.timedelta(0, 0, 0, value)
975
# Emit D-Bus signal
976
self.PropertyChanged(dbus.String("ApprovalDelay"),
977
dbus.UInt64(value, variant_level=1))
1515
978
1516
979
# ApprovalDuration - property
1517
@dbus_service_property(_interface,
1518
signature="t",
980
@dbus_service_property(_interface, signature="t",
1519
981
access="readwrite")
1520
982
def ApprovalDuration_dbus_property(self, value=None):
1521
983
if value is None: # get
1522
return dbus.UInt64(self.approval_duration.total_seconds()
1523
* 1000)
984
return dbus.UInt64(self._timedelta_to_milliseconds(
985
self.approval_duration))
1524
986
self.approval_duration = datetime.timedelta(0, 0, 0, value)
987
# Emit D-Bus signal
988
self.PropertyChanged(dbus.String("ApprovalDuration"),
989
dbus.UInt64(value, variant_level=1))
1525
990
1526
991
# Name - property
1527
@dbus_annotations(
1528
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1529
992
@dbus_service_property(_interface, signature="s", access="read")
1530
993
def Name_dbus_property(self):
1531
994
return dbus.String(self.name)
1532
995
1533
996
# Fingerprint - property
1534
@dbus_annotations(
1535
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1536
997
@dbus_service_property(_interface, signature="s", access="read")
1537
998
def Fingerprint_dbus_property(self):
1538
999
return dbus.String(self.fingerprint)
1539
1000
1540
1001
# Host - property
1541
@dbus_service_property(_interface,
1542
signature="s",
1002
@dbus_service_property(_interface, signature="s",
1543
1003
access="readwrite")
1544
1004
def Host_dbus_property(self, value=None):
1545
1005
if value is None: # get
1546
1006
return dbus.String(self.host)
1547
self.host = str(value)
1007
self.host = value
1008
# Emit D-Bus signal
1009
self.PropertyChanged(dbus.String("Host"),
1010
dbus.String(value, variant_level=1))
1548
1011
1549
1012
# Created - property
1550
@dbus_annotations(
1551
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1552
1013
@dbus_service_property(_interface, signature="s", access="read")
1553
1014
def Created_dbus_property(self):
1554
return datetime_to_dbus(self.created)
1015
return dbus.String(self._datetime_to_dbus(self.created))
1555
1016
1556
1017
# LastEnabled - property
1557
1018
@dbus_service_property(_interface, signature="s", access="read")
1558
1019
def LastEnabled_dbus_property(self):
1559
return datetime_to_dbus(self.last_enabled)
1020
if self.last_enabled is None:
1021
return dbus.String("")
1022
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1560
1023
1561
1024
# Enabled - property
1562
@dbus_service_property(_interface,
1563
signature="b",
1025
@dbus_service_property(_interface, signature="b",
1564
1026
access="readwrite")
1565
1027
def Enabled_dbus_property(self, value=None):
1566
1028
if value is None: # get
1571
1033
self.disable()
1572
1034
1573
1035
# LastCheckedOK - property
1574
@dbus_service_property(_interface,
1575
signature="s",
1036
@dbus_service_property(_interface, signature="s",
1576
1037
access="readwrite")
1577
1038
def LastCheckedOK_dbus_property(self, value=None):
1578
1039
if value is not None:
1579
1040
self.checked_ok()
1580
1041
return
1581
return datetime_to_dbus(self.last_checked_ok)
1582
1583
# LastCheckerStatus - property
1584
@dbus_service_property(_interface, signature="n", access="read")
1585
def LastCheckerStatus_dbus_property(self):
1586
return dbus.Int16(self.last_checker_status)
1587
1588
# Expires - property
1589
@dbus_service_property(_interface, signature="s", access="read")
1590
def Expires_dbus_property(self):
1591
return datetime_to_dbus(self.expires)
1042
if self.last_checked_ok is None:
1043
return dbus.String("")
1044
return dbus.String(self._datetime_to_dbus(self
1045
.last_checked_ok))
1592
1046
1593
1047
# LastApprovalRequest - property
1594
1048
@dbus_service_property(_interface, signature="s", access="read")
1595
1049
def LastApprovalRequest_dbus_property(self):
1596
return datetime_to_dbus(self.last_approval_request)
1050
if self.last_approval_request is None:
1051
return dbus.String("")
1052
return dbus.String(self.
1053
_datetime_to_dbus(self
1054
.last_approval_request))
1597
1055
1598
1056
# Timeout - property
1599
@dbus_service_property(_interface,
1600
signature="t",
1057
@dbus_service_property(_interface, signature="t",
1601
1058
access="readwrite")
1602
1059
def Timeout_dbus_property(self, value=None):
1603
1060
if value is None: # get
1604
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1605
old_timeout = self.timeout
1061
return dbus.UInt64(self.timeout_milliseconds())
1606
1062
self.timeout = datetime.timedelta(0, 0, 0, value)
1607
# Reschedule disabling
1608
if self.enabled:
1609
now = datetime.datetime.utcnow()
1610
self.expires += self.timeout - old_timeout
1611
if self.expires <= now:
1612
# The timeout has passed
1613
self.disable()
1614
else:
1615
if (getattr(self, "disable_initiator_tag", None)
1616
is None):
1617
return
1618
gobject.source_remove(self.disable_initiator_tag)
1619
self.disable_initiator_tag = gobject.timeout_add(
1620
int((self.expires - now).total_seconds() * 1000),
1621
self.disable)
1622
1623
# ExtendedTimeout - property
1624
@dbus_service_property(_interface,
1625
signature="t",
1626
access="readwrite")
1627
def ExtendedTimeout_dbus_property(self, value=None):
1628
if value is None: # get
1629
return dbus.UInt64(self.extended_timeout.total_seconds()
1630
* 1000)
1631
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1063
# Emit D-Bus signal
1064
self.PropertyChanged(dbus.String("Timeout"),
1065
dbus.UInt64(value, variant_level=1))
1066
if getattr(self, "disable_initiator_tag", None) is None:
1067
return
1068
# Reschedule timeout
1069
gobject.source_remove(self.disable_initiator_tag)
1070
self.disable_initiator_tag = None
1071
time_to_die = (self.
1072
_timedelta_to_milliseconds((self
1073
.last_checked_ok
1074
+ self.timeout)
1075
- datetime.datetime
1076
.utcnow()))
1077
if time_to_die <= 0:
1078
# The timeout has passed
1079
self.disable()
1080
else:
1081
self.disable_initiator_tag = (gobject.timeout_add
1082
(time_to_die, self.disable))
1632
1083
1633
1084
# Interval - property
1634
@dbus_service_property(_interface,
1635
signature="t",
1085
@dbus_service_property(_interface, signature="t",
1636
1086
access="readwrite")
1637
1087
def Interval_dbus_property(self, value=None):
1638
1088
if value is None: # get
1639
return dbus.UInt64(self.interval.total_seconds() * 1000)
1089
return dbus.UInt64(self.interval_milliseconds())
1640
1090
self.interval = datetime.timedelta(0, 0, 0, value)
1091
# Emit D-Bus signal
1092
self.PropertyChanged(dbus.String("Interval"),
1093
dbus.UInt64(value, variant_level=1))
1641
1094
if getattr(self, "checker_initiator_tag", None) is None:
1642
1095
return
1643
if self.enabled:
1644
# Reschedule checker run
1645
gobject.source_remove(self.checker_initiator_tag)
1646
self.checker_initiator_tag = gobject.timeout_add(
1647
value, self.start_checker)
1648
self.start_checker() # Start one now, too
1649
1096
# Reschedule checker run
1097
gobject.source_remove(self.checker_initiator_tag)
1098
self.checker_initiator_tag = (gobject.timeout_add
1099
(value, self.start_checker))
1100
self.start_checker() # Start one now, too
1101
1650
1102
# Checker - property
1651
@dbus_service_property(_interface,
1652
signature="s",
1103
@dbus_service_property(_interface, signature="s",
1653
1104
access="readwrite")
1654
1105
def Checker_dbus_property(self, value=None):
1655
1106
if value is None: # get
1656
1107
return dbus.String(self.checker_command)
1657
self.checker_command = str(value)
1108
self.checker_command = value
1109
# Emit D-Bus signal
1110
self.PropertyChanged(dbus.String("Checker"),
1111
dbus.String(self.checker_command,
1112
variant_level=1))
1658
1113
1659
1114
# CheckerRunning - property
1660
@dbus_service_property(_interface,
1661
signature="b",
1115
@dbus_service_property(_interface, signature="b",
1662
1116
access="readwrite")
1663
1117
def CheckerRunning_dbus_property(self, value=None):
1664
1118
if value is None: # get
1669
1123
self.stop_checker()
1670
1124
1671
1125
# ObjectPath - property
1672
@dbus_annotations(
1673
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1674
1126
@dbus_service_property(_interface, signature="o", access="read")
1675
1127
def ObjectPath_dbus_property(self):
1676
1128
return self.dbus_object_path # is already a dbus.ObjectPath
1677
1129
1678
1130
# Secret = property
1679
@dbus_annotations(
1680
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
1681
"invalidates"})
1682
@dbus_service_property(_interface,
1683
signature="ay",
1684
access="write",
1685
byte_arrays=True)
1131
@dbus_service_property(_interface, signature="ay",
1132
access="write", byte_arrays=True)
1686
1133
def Secret_dbus_property(self, value):
1687
self.secret = bytes(value)
1134
self.secret = str(value)
1688
1135
1689
1136
del _interface
1690
1137
1694
1141
self._pipe = child_pipe
1695
1142
self._pipe.send(('init', fpr, address))
1696
1143
if not self._pipe.recv():
1697
raise KeyError(fpr)
1698
1144
raise KeyError()
1145
1699
1146
def __getattribute__(self, name):
1700
if name == '_pipe':
1147
if(name == '_pipe'):
1701
1148
return super(ProxyClient, self).__getattribute__(name)
1702
1149
self._pipe.send(('getattr', name))
1703
1150
data = self._pipe.recv()
1704
1151
if data[0] == 'data':
1705
1152
return data[1]
1706
1153
if data[0] == 'function':
1707
1708
1154
def func(*args, **kwargs):
1709
1155
self._pipe.send(('funcall', name, args, kwargs))
1710
1156
return self._pipe.recv()[1]
1711
1712
1157
return func
1713
1158
1714
1159
def __setattr__(self, name, value):
1715
if name == '_pipe':
1160
if(name == '_pipe'):
1716
1161
return super(ProxyClient, self).__setattr__(name, value)
1717
1162
self._pipe.send(('setattr', name, value))
1718
1163
1726
1171
def handle(self):
1727
1172
with contextlib.closing(self.server.child_pipe) as child_pipe:
1728
1173
logger.info("TCP connection from: %s",
1729
str(self.client_address))
1174
unicode(self.client_address))
1730
1175
logger.debug("Pipe FD: %d",
1731
1176
self.server.child_pipe.fileno())
1732
1733
session = gnutls.connection.ClientSession(
1734
self.request, gnutls.connection .X509Credentials())
1735
1177
1178
session = (gnutls.connection
1179
.ClientSession(self.request,
1180
gnutls.connection
1181
.X509Credentials()))
1182
1736
1183
# Note: gnutls.connection.X509Credentials is really a
1737
1184
# generic GnuTLS certificate credentials object so long as
1738
1185
# no X.509 keys are added to it. Therefore, we can use it
1739
1186
# here despite using OpenPGP certificates.
1740
1187
1741
1188
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1742
1189
# "+AES-256-CBC", "+SHA1",
1743
1190
# "+COMP-NULL", "+CTYPE-OPENPGP",
1746
1193
priority = self.server.gnutls_priority
1747
1194
if priority is None:
1748
1195
priority = "NORMAL"
1749
gnutls.library.functions.gnutls_priority_set_direct(
1750
session._c_object, priority, None)
1751
1196
(gnutls.library.functions
1197
.gnutls_priority_set_direct(session._c_object,
1198
priority, None))
1199
1752
1200
# Start communication using the Mandos protocol
1753
1201
# Get protocol number
1754
1202
line = self.request.makefile().readline()
1755
1203
logger.debug("Protocol version: %r", line)
1756
1204
try:
1757
1205
if int(line.strip().split()[0]) > 1:
1758
raise RuntimeError(line)
1759
except (ValueError, IndexError, RuntimeError) as error:
1206
raise RuntimeError
1207
except (ValueError, IndexError, RuntimeError), error:
1760
1208
logger.error("Unknown protocol version: %s", error)
1761
1209
return
1762
1210
1763
1211
# Start GnuTLS connection
1764
1212
try:
1765
1213
session.handshake()
1766
except gnutls.errors.GNUTLSError as error:
1214
except gnutls.errors.GNUTLSError, error:
1767
1215
logger.warning("Handshake failed: %s", error)
1768
1216
# Do not run session.bye() here: the session is not
1769
1217
# established. Just abandon the request.
1770
1218
return
1771
1219
logger.debug("Handshake succeeded")
1772
1220
1773
1221
approval_required = False
1774
1222
try:
1775
1223
try:
1776
fpr = self.fingerprint(
1777
self.peer_certificate(session))
1778
except (TypeError,
1779
gnutls.errors.GNUTLSError) as error:
1224
fpr = self.fingerprint(self.peer_certificate
1225
(session))
1226
except (TypeError, gnutls.errors.GNUTLSError), error:
1780
1227
logger.warning("Bad certificate: %s", error)
1781
1228
return
1782
1229
logger.debug("Fingerprint: %s", fpr)
1783
1230
1784
1231
try:
1785
1232
client = ProxyClient(child_pipe, fpr,
1786
1233
self.client_address)
1794
1241
1795
1242
while True:
1796
1243
if not client.enabled:
1797
logger.info("Client %s is disabled",
1798
client.name)
1244
logger.warning("Client %s is disabled",
1245
client.name)
1799
1246
if self.server.use_dbus:
1800
1247
# Emit D-Bus signal
1801
client.Rejected("Disabled")
1248
client.Rejected("Disabled")
1802
1249
return
1803
1250
1804
if client.approved or not client.approval_delay:
1251
if client._approved or not client.approval_delay:
1805
1252
#We are approved or approval is disabled
1806
1253
break
1807
elif client.approved is None:
1254
elif client._approved is None:
1808
1255
logger.info("Client %s needs approval",
1809
1256
client.name)
1810
1257
if self.server.use_dbus:
1811
1258
# Emit D-Bus signal
1812
1259
client.NeedApproval(
1813
client.approval_delay.total_seconds()
1814
* 1000, client.approved_by_default)
1260
client.approval_delay_milliseconds(),
1261
client.approved_by_default)
1815
1262
else:
1816
1263
logger.warning("Client %s was not approved",
1817
1264
client.name)
1821
1268
return
1822
1269
1823
1270
#wait until timeout or approved
1271
#x = float(client._timedelta_to_milliseconds(delay))
1824
1272
time = datetime.datetime.now()
1825
1273
client.changedstate.acquire()
1826
client.changedstate.wait(delay.total_seconds())
1274
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1827
1275
client.changedstate.release()
1828
1276
time2 = datetime.datetime.now()
1829
1277
if (time2 - time) >= delay:
1844
1292
while sent_size < len(client.secret):
1845
1293
try:
1846
1294
sent = session.send(client.secret[sent_size:])
1847
except gnutls.errors.GNUTLSError as error:
1848
logger.warning("gnutls send failed",
1849
exc_info=error)
1295
except (gnutls.errors.GNUTLSError), error:
1296
logger.warning("gnutls send failed")
1850
1297
return
1851
logger.debug("Sent: %d, remaining: %d", sent,
1852
len(client.secret) - (sent_size
1853
+ sent))
1298
logger.debug("Sent: %d, remaining: %d",
1299
sent, len(client.secret)
1300
- (sent_size + sent))
1854
1301
sent_size += sent
1855
1302
1856
1303
logger.info("Sending secret to %s", client.name)
1857
# bump the timeout using extended_timeout
1858
client.bump_timeout(client.extended_timeout)
1304
# bump the timeout as if seen
1305
client.checked_ok()
1859
1306
if self.server.use_dbus:
1860
1307
# Emit D-Bus signal
1861
1308
client.GotSecret()
1865
1312
client.approvals_pending -= 1
1866
1313
try:
1867
1314
session.bye()
1868
except gnutls.errors.GNUTLSError as error:
1869
logger.warning("GnuTLS bye failed",
1870
exc_info=error)
1315
except (gnutls.errors.GNUTLSError), error:
1316
logger.warning("GnuTLS bye failed")
1871
1317
1872
1318
@staticmethod
1873
1319
def peer_certificate(session):
1874
1320
"Return the peer's OpenPGP certificate as a bytestring"
1875
1321
# If not an OpenPGP certificate...
1876
if (gnutls.library.functions.gnutls_certificate_type_get(
1877
session._c_object)
1322
if (gnutls.library.functions
1323
.gnutls_certificate_type_get(session._c_object)
1878
1324
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1879
1325
# ...do the normal thing
1880
1326
return session.peer_certificate
1894
1340
def fingerprint(openpgp):
1895
1341
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1896
1342
# New GnuTLS "datum" with the OpenPGP public key
1897
datum = gnutls.library.types.gnutls_datum_t(
1898
ctypes.cast(ctypes.c_char_p(openpgp),
1899
ctypes.POINTER(ctypes.c_ubyte)),
1900
ctypes.c_uint(len(openpgp)))
1343
datum = (gnutls.library.types
1344
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1345
ctypes.POINTER
1346
(ctypes.c_ubyte)),
1347
ctypes.c_uint(len(openpgp))))
1901
1348
# New empty GnuTLS certificate
1902
1349
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1903
gnutls.library.functions.gnutls_openpgp_crt_init(
1904
ctypes.byref(crt))
1350
(gnutls.library.functions
1351
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1905
1352
# Import the OpenPGP public key into the certificate
1906
gnutls.library.functions.gnutls_openpgp_crt_import(
1907
crt, ctypes.byref(datum),
1908
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1353
(gnutls.library.functions
1354
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1355
gnutls.library.constants
1356
.GNUTLS_OPENPGP_FMT_RAW))
1909
1357
# Verify the self signature in the key
1910
1358
crtverify = ctypes.c_uint()
1911
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1912
crt, 0, ctypes.byref(crtverify))
1359
(gnutls.library.functions
1360
.gnutls_openpgp_crt_verify_self(crt, 0,
1361
ctypes.byref(crtverify)))
1913
1362
if crtverify.value != 0:
1914
1363
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1915
raise gnutls.errors.CertificateSecurityError(
1916
"Verify failed")
1364
raise (gnutls.errors.CertificateSecurityError
1365
("Verify failed"))
1917
1366
# New buffer for the fingerprint
1918
1367
buf = ctypes.create_string_buffer(20)
1919
1368
buf_len = ctypes.c_size_t()
1920
1369
# Get the fingerprint from the certificate into the buffer
1921
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1922
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1370
(gnutls.library.functions
1371
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1372
ctypes.byref(buf_len)))
1923
1373
# Deinit the certificate
1924
1374
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1925
1375
# Convert the buffer to a Python bytestring
1926
1376
fpr = ctypes.string_at(buf, buf_len.value)
1927
1377
# Convert the bytestring to hexadecimal notation
1928
hex_fpr = binascii.hexlify(fpr).upper()
1378
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1929
1379
return hex_fpr
1930
1380
1931
1381
1932
1382
class MultiprocessingMixIn(object):
1933
1383
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1934
1935
1384
def sub_process_main(self, request, address):
1936
1385
try:
1937
1386
self.finish_request(request, address)
1938
except Exception:
1387
except:
1939
1388
self.handle_error(request, address)
1940
1389
self.close_request(request)
1941
1390
1942
1391
def process_request(self, request, address):
1943
1392
"""Start a new process to process the request."""
1944
proc = multiprocessing.Process(target = self.sub_process_main,
1945
args = (request, address))
1946
proc.start()
1947
return proc
1948
1393
multiprocessing.Process(target = self.sub_process_main,
1394
args = (request, address)).start()
1949
1395
1950
1396
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1951
1397
""" adds a pipe to the MixIn """
1952
1953
1398
def process_request(self, request, client_address):
1954
1399
"""Overrides and wraps the original process_request().
1955
1400
1956
1401
This function creates a new pipe in self.pipe
1957
1402
"""
1958
1403
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1959
1960
proc = MultiprocessingMixIn.process_request(self, request,
1961
client_address)
1404
1405
super(MultiprocessingMixInWithPipe,
1406
self).process_request(request, client_address)
1962
1407
self.child_pipe.close()
1963
self.add_pipe(parent_pipe, proc)
1964
1965
def add_pipe(self, parent_pipe, proc):
1408
self.add_pipe(parent_pipe)
1409
1410
def add_pipe(self, parent_pipe):
1966
1411
"""Dummy function; override as necessary"""
1967
raise NotImplementedError()
1968
1412
raise NotImplementedError
1969
1413
1970
1414
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1971
1415
socketserver.TCPServer, object):
1976
1420
interface: None or a network interface name (string)
1977
1421
use_ipv6: Boolean; to use IPv6 or not
1978
1422
"""
1979
1980
1423
def __init__(self, server_address, RequestHandlerClass,
1981
interface=None,
1982
use_ipv6=True,
1983
socketfd=None):
1984
"""If socketfd is set, use that file descriptor instead of
1985
creating a new one with socket.socket().
1986
"""
1424
interface=None, use_ipv6=True):
1987
1425
self.interface = interface
1988
1426
if use_ipv6:
1989
1427
self.address_family = socket.AF_INET6
1990
if socketfd is not None:
1991
# Save the file descriptor
1992
self.socketfd = socketfd
1993
# Save the original socket.socket() function
1994
self.socket_socket = socket.socket
1995
# To implement --socket, we monkey patch socket.socket.
1996
#
1997
# (When socketserver.TCPServer is a new-style class, we
1998
# could make self.socket into a property instead of monkey
1999
# patching socket.socket.)
2000
#
2001
# Create a one-time-only replacement for socket.socket()
2002
@functools.wraps(socket.socket)
2003
def socket_wrapper(*args, **kwargs):
2004
# Restore original function so subsequent calls are
2005
# not affected.
2006
socket.socket = self.socket_socket
2007
del self.socket_socket
2008
# This time only, return a new socket object from the
2009
# saved file descriptor.
2010
return socket.fromfd(self.socketfd, *args, **kwargs)
2011
# Replace socket.socket() function with wrapper
2012
socket.socket = socket_wrapper
2013
# The socketserver.TCPServer.__init__ will call
2014
# socket.socket(), which might be our replacement,
2015
# socket_wrapper(), if socketfd was set.
2016
1428
socketserver.TCPServer.__init__(self, server_address,
2017
1429
RequestHandlerClass)
2018
2019
1430
def server_bind(self):
2020
1431
"""This overrides the normal server_bind() function
2021
1432
to bind to an interface if one was specified, and also NOT to
2027
1438
self.interface)
2028
1439
else:
2029
1440
try:
2030
self.socket.setsockopt(
2031
socket.SOL_SOCKET, SO_BINDTODEVICE,
2032
(self.interface + "\0").encode("utf-8"))
2033
except socket.error as error:
2034
if error.errno == errno.EPERM:
2035
logger.error("No permission to bind to"
2036
" interface %s", self.interface)
2037
elif error.errno == errno.ENOPROTOOPT:
1441
self.socket.setsockopt(socket.SOL_SOCKET,
1442
SO_BINDTODEVICE,
1443
str(self.interface
1444
+ '\0'))
1445
except socket.error, error:
1446
if error[0] == errno.EPERM:
1447
logger.error("No permission to"
1448
" bind to interface %s",
1449
self.interface)
1450
elif error[0] == errno.ENOPROTOOPT:
2038
1451
logger.error("SO_BINDTODEVICE not available;"
2039
1452
" cannot bind to interface %s",
2040
1453
self.interface)
2041
elif error.errno == errno.ENODEV:
2042
logger.error("Interface %s does not exist,"
2043
" cannot bind", self.interface)
2044
1454
else:
2045
1455
raise
2046
1456
# Only bind(2) the socket if we really need to.
2049
1459
if self.address_family == socket.AF_INET6:
2050
1460
any_address = "::" # in6addr_any
2051
1461
else:
2052
any_address = "0.0.0.0" # INADDR_ANY
1462
any_address = socket.INADDR_ANY
2053
1463
self.server_address = (any_address,
2054
1464
self.server_address[1])
2055
1465
elif not self.server_address[1]:
2056
self.server_address = (self.server_address[0], 0)
1466
self.server_address = (self.server_address[0],
1467
0)
2057
1468
# if self.interface:
2058
1469
# self.server_address = (self.server_address[0],
2059
1470
# 0, # port
2073
1484
2074
1485
Assumes a gobject.MainLoop event loop.
2075
1486
"""
2076
2077
1487
def __init__(self, server_address, RequestHandlerClass,
2078
interface=None,
2079
use_ipv6=True,
2080
clients=None,
2081
gnutls_priority=None,
2082
use_dbus=True,
2083
socketfd=None):
1488
interface=None, use_ipv6=True, clients=None,
1489
gnutls_priority=None, use_dbus=True):
2084
1490
self.enabled = False
2085
1491
self.clients = clients
2086
1492
if self.clients is None:
2087
self.clients = {}
1493
self.clients = set()
2088
1494
self.use_dbus = use_dbus
2089
1495
self.gnutls_priority = gnutls_priority
2090
1496
IPv6_TCPServer.__init__(self, server_address,
2091
1497
RequestHandlerClass,
2092
1498
interface = interface,
2093
use_ipv6 = use_ipv6,
2094
socketfd = socketfd)
2095
1499
use_ipv6 = use_ipv6)
2096
1500
def server_activate(self):
2097
1501
if self.enabled:
2098
1502
return socketserver.TCPServer.server_activate(self)
2099
2100
1503
def enable(self):
2101
1504
self.enabled = True
2102
2103
def add_pipe(self, parent_pipe, proc):
1505
def add_pipe(self, parent_pipe):
2104
1506
# Call "handle_ipc" for both data and EOF events
2105
gobject.io_add_watch(
2106
parent_pipe.fileno(),
2107
gobject.IO_IN | gobject.IO_HUP,
2108
functools.partial(self.handle_ipc,
2109
parent_pipe = parent_pipe,
2110
proc = proc))
2111
2112
def handle_ipc(self, source, condition,
2113
parent_pipe=None,
2114
proc = None,
1507
gobject.io_add_watch(parent_pipe.fileno(),
1508
gobject.IO_IN | gobject.IO_HUP,
1509
functools.partial(self.handle_ipc,
1510
parent_pipe = parent_pipe))
1511
1512
def handle_ipc(self, source, condition, parent_pipe=None,
2115
1513
client_object=None):
2116
# error, or the other end of multiprocessing.Pipe has closed
2117
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2118
# Wait for other process to exit
2119
proc.join()
1514
condition_names = {
1515
gobject.IO_IN: "IN", # There is data to read.
1516
gobject.IO_OUT: "OUT", # Data can be written (without
1517
# blocking).
1518
gobject.IO_PRI: "PRI", # There is urgent data to read.
1519
gobject.IO_ERR: "ERR", # Error condition.
1520
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1521
# broken, usually for pipes and
1522
# sockets).
1523
}
1524
conditions_string = ' | '.join(name
1525
for cond, name in
1526
condition_names.iteritems()
1527
if cond & condition)
1528
# error or the other end of multiprocessing.Pipe has closed
1529
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2120
1530
return False
2121
1531
2122
1532
# Read a request from the child
2127
1537
fpr = request[1]
2128
1538
address = request[2]
2129
1539
2130
for c in self.clients.itervalues():
1540
for c in self.clients:
2131
1541
if c.fingerprint == fpr:
2132
1542
client = c
2133
1543
break
2134
1544
else:
2135
logger.info("Client not found for fingerprint: %s, ad"
2136
"dress: %s", fpr, address)
1545
logger.warning("Client not found for fingerprint: %s, ad"
1546
"dress: %s", fpr, address)
2137
1547
if self.use_dbus:
2138
1548
# Emit D-Bus signal
2139
mandos_dbus_service.ClientNotFound(fpr,
2140
address[0])
1549
mandos_dbus_service.ClientNotFound(fpr, address[0])
2141
1550
parent_pipe.send(False)
2142
1551
return False
2143
1552
2144
gobject.io_add_watch(
2145
parent_pipe.fileno(),
2146
gobject.IO_IN | gobject.IO_HUP,
2147
functools.partial(self.handle_ipc,
2148
parent_pipe = parent_pipe,
2149
proc = proc,
2150
client_object = client))
1553
gobject.io_add_watch(parent_pipe.fileno(),
1554
gobject.IO_IN | gobject.IO_HUP,
1555
functools.partial(self.handle_ipc,
1556
parent_pipe = parent_pipe,
1557
client_object = client))
2151
1558
parent_pipe.send(True)
2152
# remove the old hook in favor of the new above hook on
2153
# same fileno
1559
# remove the old hook in favor of the new above hook on same fileno
2154
1560
return False
2155
1561
if command == 'funcall':
2156
1562
funcname = request[1]
2157
1563
args = request[2]
2158
1564
kwargs = request[3]
2159
1565
2160
parent_pipe.send(('data', getattr(client_object,
2161
funcname)(*args,
2162
**kwargs)))
2163
1566
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1567
2164
1568
if command == 'getattr':
2165
1569
attrname = request[1]
2166
if isinstance(client_object.__getattribute__(attrname),
2167
collections.Callable):
2168
parent_pipe.send(('function', ))
1570
if callable(client_object.__getattribute__(attrname)):
1571
parent_pipe.send(('function',))
2169
1572
else:
2170
parent_pipe.send((
2171
'data', client_object.__getattribute__(attrname)))
1573
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2172
1574
2173
1575
if command == 'setattr':
2174
1576
attrname = request[1]
2175
1577
value = request[2]
2176
1578
setattr(client_object, attrname, value)
2177
1579
2178
1580
return True
2179
1581
2180
1582
2181
def rfc3339_duration_to_delta(duration):
2182
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2183
2184
>>> rfc3339_duration_to_delta("P7D")
2185
datetime.timedelta(7)
2186
>>> rfc3339_duration_to_delta("PT60S")
2187
datetime.timedelta(0, 60)
2188
>>> rfc3339_duration_to_delta("PT60M")
2189
datetime.timedelta(0, 3600)
2190
>>> rfc3339_duration_to_delta("PT24H")
2191
datetime.timedelta(1)
2192
>>> rfc3339_duration_to_delta("P1W")
2193
datetime.timedelta(7)
2194
>>> rfc3339_duration_to_delta("PT5M30S")
2195
datetime.timedelta(0, 330)
2196
>>> rfc3339_duration_to_delta("P1DT3M20S")
2197
datetime.timedelta(1, 200)
2198
"""
2199
2200
# Parsing an RFC 3339 duration with regular expressions is not
2201
# possible - there would have to be multiple places for the same
2202
# values, like seconds. The current code, while more esoteric, is
2203
# cleaner without depending on a parsing library. If Python had a
2204
# built-in library for parsing we would use it, but we'd like to
2205
# avoid excessive use of external libraries.
2206
2207
# New type for defining tokens, syntax, and semantics all-in-one
2208
Token = collections.namedtuple("Token", (
2209
"regexp", # To match token; if "value" is not None, must have
2210
# a "group" containing digits
2211
"value", # datetime.timedelta or None
2212
"followers")) # Tokens valid after this token
2213
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2214
# the "duration" ABNF definition in RFC 3339, Appendix A.
2215
token_end = Token(re.compile(r"$"), None, frozenset())
2216
token_second = Token(re.compile(r"(\d+)S"),
2217
datetime.timedelta(seconds=1),
2218
frozenset((token_end, )))
2219
token_minute = Token(re.compile(r"(\d+)M"),
2220
datetime.timedelta(minutes=1),
2221
frozenset((token_second, token_end)))
2222
token_hour = Token(re.compile(r"(\d+)H"),
2223
datetime.timedelta(hours=1),
2224
frozenset((token_minute, token_end)))
2225
token_time = Token(re.compile(r"T"),
2226
None,
2227
frozenset((token_hour, token_minute,
2228
token_second)))
2229
token_day = Token(re.compile(r"(\d+)D"),
2230
datetime.timedelta(days=1),
2231
frozenset((token_time, token_end)))
2232
token_month = Token(re.compile(r"(\d+)M"),
2233
datetime.timedelta(weeks=4),
2234
frozenset((token_day, token_end)))
2235
token_year = Token(re.compile(r"(\d+)Y"),
2236
datetime.timedelta(weeks=52),
2237
frozenset((token_month, token_end)))
2238
token_week = Token(re.compile(r"(\d+)W"),
2239
datetime.timedelta(weeks=1),
2240
frozenset((token_end, )))
2241
token_duration = Token(re.compile(r"P"), None,
2242
frozenset((token_year, token_month,
2243
token_day, token_time,
2244
token_week)))
2245
# Define starting values
2246
value = datetime.timedelta() # Value so far
2247
found_token = None
2248
followers = frozenset((token_duration, )) # Following valid tokens
2249
s = duration # String left to parse
2250
# Loop until end token is found
2251
while found_token is not token_end:
2252
# Search for any currently valid tokens
2253
for token in followers:
2254
match = token.regexp.match(s)
2255
if match is not None:
2256
# Token found
2257
if token.value is not None:
2258
# Value found, parse digits
2259
factor = int(match.group(1), 10)
2260
# Add to value so far
2261
value += factor * token.value
2262
# Strip token from string
2263
s = token.regexp.sub("", s, 1)
2264
# Go to found token
2265
found_token = token
2266
# Set valid next tokens
2267
followers = found_token.followers
2268
break
2269
else:
2270
# No currently valid tokens were found
2271
raise ValueError("Invalid RFC 3339 duration: {!r}"
2272
.format(duration))
2273
# End token found
2274
return value
2275
2276
2277
1583
def string_to_delta(interval):
2278
1584
"""Parse a string and return a datetime.timedelta
2279
1585
2290
1596
>>> string_to_delta('5m 30s')
2291
1597
datetime.timedelta(0, 330)
2292
1598
"""
2293
2294
try:
2295
return rfc3339_duration_to_delta(interval)
2296
except ValueError:
2297
pass
2298
2299
1599
timevalue = datetime.timedelta(0)
2300
1600
for s in interval.split():
2301
1601
try:
2302
suffix = s[-1]
1602
suffix = unicode(s[-1])
2303
1603
value = int(s[:-1])
2304
1604
if suffix == "d":
2305
1605
delta = datetime.timedelta(value)
2312
1612
elif suffix == "w":
2313
1613
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2314
1614
else:
2315
raise ValueError("Unknown suffix {!r}".format(suffix))
2316
except IndexError as e:
1615
raise ValueError("Unknown suffix %r" % suffix)
1616
except (ValueError, IndexError), e:
2317
1617
raise ValueError(*(e.args))
2318
1618
timevalue += delta
2319
1619
return timevalue
2320
1620
2321
1621
1622
def if_nametoindex(interface):
1623
"""Call the C function if_nametoindex(), or equivalent
1624
1625
Note: This function cannot accept a unicode string."""
1626
global if_nametoindex
1627
try:
1628
if_nametoindex = (ctypes.cdll.LoadLibrary
1629
(ctypes.util.find_library("c"))
1630
.if_nametoindex)
1631
except (OSError, AttributeError):
1632
logger.warning("Doing if_nametoindex the hard way")
1633
def if_nametoindex(interface):
1634
"Get an interface index the hard way, i.e. using fcntl()"
1635
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1636
with contextlib.closing(socket.socket()) as s:
1637
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1638
struct.pack(str("16s16x"),
1639
interface))
1640
interface_index = struct.unpack(str("I"),
1641
ifreq[16:20])[0]
1642
return interface_index
1643
return if_nametoindex(interface)
1644
1645
2322
1646
def daemon(nochdir = False, noclose = False):
2323
1647
"""See daemon(3). Standard BSD Unix function.
2324
1648
2332
1656
sys.exit()
2333
1657
if not noclose:
2334
1658
# Close all standard open file descriptors
2335
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1659
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2336
1660
if not stat.S_ISCHR(os.fstat(null).st_mode):
2337
1661
raise OSError(errno.ENODEV,
2338
"{} not a character device"
2339
.format(os.devnull))
1662
"%s not a character device"
1663
% os.path.devnull)
2340
1664
os.dup2(null, sys.stdin.fileno())
2341
1665
os.dup2(null, sys.stdout.fileno())
2342
1666
os.dup2(null, sys.stderr.fileno())
2349
1673
##################################################################
2350
1674
# Parsing of options, both command line and config file
2351
1675
2352
parser = argparse.ArgumentParser()
2353
parser.add_argument("-v", "--version", action="version",
2354
version = "%(prog)s {}".format(version),
2355
help="show version number and exit")
2356
parser.add_argument("-i", "--interface", metavar="IF",
2357
help="Bind to interface IF")
2358
parser.add_argument("-a", "--address",
2359
help="Address to listen for requests on")
2360
parser.add_argument("-p", "--port", type=int,
2361
help="Port number to receive requests on")
2362
parser.add_argument("--check", action="store_true",
2363
help="Run self-test")
2364
parser.add_argument("--debug", action="store_true",
2365
help="Debug mode; run in foreground and log"
2366
" to terminal", default=None)
2367
parser.add_argument("--debuglevel", metavar="LEVEL",
2368
help="Debug level for stdout output")
2369
parser.add_argument("--priority", help="GnuTLS"
2370
" priority string (see GnuTLS documentation)")
2371
parser.add_argument("--servicename",
2372
metavar="NAME", help="Zeroconf service name")
2373
parser.add_argument("--configdir",
2374
default="/etc/mandos", metavar="DIR",
2375
help="Directory to search for configuration"
2376
" files")
2377
parser.add_argument("--no-dbus", action="store_false",
2378
dest="use_dbus", help="Do not provide D-Bus"
2379
" system bus interface", default=None)
2380
parser.add_argument("--no-ipv6", action="store_false",
2381
dest="use_ipv6", help="Do not use IPv6",
2382
default=None)
2383
parser.add_argument("--no-restore", action="store_false",
2384
dest="restore", help="Do not restore stored"
2385
" state", default=None)
2386
parser.add_argument("--socket", type=int,
2387
help="Specify a file descriptor to a network"
2388
" socket to use instead of creating one")
2389
parser.add_argument("--statedir", metavar="DIR",
2390
help="Directory to save/restore state in")
2391
parser.add_argument("--foreground", action="store_true",
2392
help="Run in foreground", default=None)
2393
parser.add_argument("--no-zeroconf", action="store_false",
2394
dest="zeroconf", help="Do not use Zeroconf",
2395
default=None)
2396
2397
options = parser.parse_args()
1676
parser = optparse.OptionParser(version = "%%prog %s" % version)
1677
parser.add_option("-i", "--interface", type="string",
1678
metavar="IF", help="Bind to interface IF")
1679
parser.add_option("-a", "--address", type="string",
1680
help="Address to listen for requests on")
1681
parser.add_option("-p", "--port", type="int",
1682
help="Port number to receive requests on")
1683
parser.add_option("--check", action="store_true",
1684
help="Run self-test")
1685
parser.add_option("--debug", action="store_true",
1686
help="Debug mode; run in foreground and log to"
1687
" terminal")
1688
parser.add_option("--debuglevel", type="string", metavar="LEVEL",
1689
help="Debug level for stdout output")
1690
parser.add_option("--priority", type="string", help="GnuTLS"
1691
" priority string (see GnuTLS documentation)")
1692
parser.add_option("--servicename", type="string",
1693
metavar="NAME", help="Zeroconf service name")
1694
parser.add_option("--configdir", type="string",
1695
default="/etc/mandos", metavar="DIR",
1696
help="Directory to search for configuration"
1697
" files")
1698
parser.add_option("--no-dbus", action="store_false",
1699
dest="use_dbus", help="Do not provide D-Bus"
1700
" system bus interface")
1701
parser.add_option("--no-ipv6", action="store_false",
1702
dest="use_ipv6", help="Do not use IPv6")
1703
options = parser.parse_args()[0]
2398
1704
2399
1705
if options.check:
2400
1706
import doctest
2401
fail_count, test_count = doctest.testmod()
2402
sys.exit(os.EX_OK if fail_count == 0 else 1)
1707
doctest.testmod()
1708
sys.exit()
2403
1709
2404
1710
# Default values for config file for server-global settings
2405
1711
server_defaults = { "interface": "",
2407
1713
"port": "",
2408
1714
"debug": "False",
2409
1715
"priority":
2410
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2411
":+SIGN-DSA-SHA256",
1716
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2412
1717
"servicename": "Mandos",
2413
1718
"use_dbus": "True",
2414
1719
"use_ipv6": "True",
2415
1720
"debuglevel": "",
2416
"restore": "True",
2417
"socket": "",
2418
"statedir": "/var/lib/mandos",
2419
"foreground": "False",
2420
"zeroconf": "True",
2421
}
1721
}
2422
1722
2423
1723
# Parse config file for server-global settings
2424
1724
server_config = configparser.SafeConfigParser(server_defaults)
2425
1725
del server_defaults
2426
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1726
server_config.read(os.path.join(options.configdir,
1727
"mandos.conf"))
2427
1728
# Convert the SafeConfigParser object to a dict
2428
1729
server_settings = server_config.defaults()
2429
1730
# Use the appropriate methods on the non-string config options
2430
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1731
for option in ("debug", "use_dbus", "use_ipv6"):
2431
1732
server_settings[option] = server_config.getboolean("DEFAULT",
2432
1733
option)
2433
1734
if server_settings["port"]:
2434
1735
server_settings["port"] = server_config.getint("DEFAULT",
2435
1736
"port")
2436
if server_settings["socket"]:
2437
server_settings["socket"] = server_config.getint("DEFAULT",
2438
"socket")
2439
# Later, stdin will, and stdout and stderr might, be dup'ed
2440
# over with an opened os.devnull. But we don't want this to
2441
# happen with a supplied network socket.
2442
if 0 <= server_settings["socket"] <= 2:
2443
server_settings["socket"] = os.dup(server_settings
2444
["socket"])
2445
1737
del server_config
2446
1738
2447
1739
# Override the settings from the config file with command line
2448
1740
# options, if set.
2449
1741
for option in ("interface", "address", "port", "debug",
2450
"priority", "servicename", "configdir", "use_dbus",
2451
"use_ipv6", "debuglevel", "restore", "statedir",
2452
"socket", "foreground", "zeroconf"):
1742
"priority", "servicename", "configdir",
1743
"use_dbus", "use_ipv6", "debuglevel"):
2453
1744
value = getattr(options, option)
2454
1745
if value is not None:
2455
1746
server_settings[option] = value
2456
1747
del options
2457
1748
# Force all strings to be unicode
2458
1749
for option in server_settings.keys():
2459
if isinstance(server_settings[option], bytes):
2460
server_settings[option] = (server_settings[option]
2461
.decode("utf-8"))
2462
# Force all boolean options to be boolean
2463
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2464
"foreground", "zeroconf"):
2465
server_settings[option] = bool(server_settings[option])
2466
# Debug implies foreground
2467
if server_settings["debug"]:
2468
server_settings["foreground"] = True
1750
if type(server_settings[option]) is str:
1751
server_settings[option] = unicode(server_settings[option])
2469
1752
# Now we have our good server settings in "server_settings"
2470
1753
2471
1754
##################################################################
2472
1755
2473
if (not server_settings["zeroconf"]
2474
and not (server_settings["port"]
2475
or server_settings["socket"] != "")):
2476
parser.error("Needs port or socket to work without Zeroconf")
2477
2478
1756
# For convenience
2479
1757
debug = server_settings["debug"]
2480
1758
debuglevel = server_settings["debuglevel"]
2481
1759
use_dbus = server_settings["use_dbus"]
2482
1760
use_ipv6 = server_settings["use_ipv6"]
2483
stored_state_path = os.path.join(server_settings["statedir"],
2484
stored_state_file)
2485
foreground = server_settings["foreground"]
2486
zeroconf = server_settings["zeroconf"]
2487
2488
if debug:
2489
initlogger(debug, logging.DEBUG)
2490
else:
2491
if not debuglevel:
2492
initlogger(debug)
2493
else:
2494
level = getattr(logging, debuglevel.upper())
2495
initlogger(debug, level)
2496
1761
2497
1762
if server_settings["servicename"] != "Mandos":
2498
syslogger.setFormatter(
2499
logging.Formatter('Mandos ({}) [%(process)d]:'
2500
' %(levelname)s: %(message)s'.format(
2501
server_settings["servicename"])))
1763
syslogger.setFormatter(logging.Formatter
1764
('Mandos (%s) [%%(process)d]:'
1765
' %%(levelname)s: %%(message)s'
1766
% server_settings["servicename"]))
2502
1767
2503
1768
# Parse config file with clients
2504
client_config = configparser.SafeConfigParser(Client
2505
.client_defaults)
1769
client_defaults = { "timeout": "1h",
1770
"interval": "5m",
1771
"checker": "fping -q -- %%(host)s",
1772
"host": "",
1773
"approval_delay": "0s",
1774
"approval_duration": "1s",
1775
}
1776
client_config = configparser.SafeConfigParser(client_defaults)
2506
1777
client_config.read(os.path.join(server_settings["configdir"],
2507
1778
"clients.conf"))
2508
1779
2509
1780
global mandos_dbus_service
2510
1781
mandos_dbus_service = None
2511
1782
2512
socketfd = None
2513
if server_settings["socket"] != "":
2514
socketfd = server_settings["socket"]
2515
tcp_server = MandosServer(
2516
(server_settings["address"], server_settings["port"]),
2517
ClientHandler,
2518
interface=(server_settings["interface"] or None),
2519
use_ipv6=use_ipv6,
2520
gnutls_priority=server_settings["priority"],
2521
use_dbus=use_dbus,
2522
socketfd=socketfd)
2523
if not foreground:
2524
pidfilename = "/run/mandos.pid"
2525
if not os.path.isdir("/run/."):
2526
pidfilename = "/var/run/mandos.pid"
2527
pidfile = None
1783
tcp_server = MandosServer((server_settings["address"],
1784
server_settings["port"]),
1785
ClientHandler,
1786
interface=(server_settings["interface"]
1787
or None),
1788
use_ipv6=use_ipv6,
1789
gnutls_priority=
1790
server_settings["priority"],
1791
use_dbus=use_dbus)
1792
if not debug:
1793
pidfilename = "/var/run/mandos.pid"
2528
1794
try:
2529
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2530
except IOError as e:
2531
logger.error("Could not open file %r", pidfilename,
2532
exc_info=e)
1795
pidfile = open(pidfilename, "w")
1796
except IOError:
1797
logger.error("Could not open file %r", pidfilename)
2533
1798
2534
for name in ("_mandos", "mandos", "nobody"):
1799
try:
1800
uid = pwd.getpwnam("_mandos").pw_uid
1801
gid = pwd.getpwnam("_mandos").pw_gid
1802
except KeyError:
2535
1803
try:
2536
uid = pwd.getpwnam(name).pw_uid
2537
gid = pwd.getpwnam(name).pw_gid
2538
break
1804
uid = pwd.getpwnam("mandos").pw_uid
1805
gid = pwd.getpwnam("mandos").pw_gid
2539
1806
except KeyError:
2540
continue
2541
else:
2542
uid = 65534
2543
gid = 65534
1807
try:
1808
uid = pwd.getpwnam("nobody").pw_uid
1809
gid = pwd.getpwnam("nobody").pw_gid
1810
except KeyError:
1811
uid = 65534
1812
gid = 65534
2544
1813
try:
2545
1814
os.setgid(gid)
2546
1815
os.setuid(uid)
2547
except OSError as error:
2548
if error.errno != errno.EPERM:
2549
raise
1816
except OSError, error:
1817
if error[0] != errno.EPERM:
1818
raise error
2550
1819
1820
if not debug and not debuglevel:
1821
syslogger.setLevel(logging.WARNING)
1822
console.setLevel(logging.WARNING)
1823
if debuglevel:
1824
level = getattr(logging, debuglevel.upper())
1825
syslogger.setLevel(level)
1826
console.setLevel(level)
1827
2551
1828
if debug:
2552
1829
# Enable all possible GnuTLS debugging
2553
1830
2559
1836
def debug_gnutls(level, string):
2560
1837
logger.debug("GnuTLS: %s", string[:-1])
2561
1838
2562
gnutls.library.functions.gnutls_global_set_log_function(
2563
debug_gnutls)
1839
(gnutls.library.functions
1840
.gnutls_global_set_log_function(debug_gnutls))
2564
1841
2565
1842
# Redirect stdin so all checkers get /dev/null
2566
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1843
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2567
1844
os.dup2(null, sys.stdin.fileno())
2568
1845
if null > 2:
2569
1846
os.close(null)
1847
else:
1848
# No console logging
1849
logger.removeHandler(console)
2570
1850
2571
1851
# Need to fork before connecting to D-Bus
2572
if not foreground:
1852
if not debug:
2573
1853
# Close all input and output, do double fork, etc.
2574
1854
daemon()
2575
1855
2576
# multiprocessing will use threads, so before we use gobject we
2577
# need to inform gobject that threads will be used.
2578
gobject.threads_init()
2579
2580
1856
global main_loop
2581
1857
# From the Avahi example code
2582
DBusGMainLoop(set_as_default=True)
1858
DBusGMainLoop(set_as_default=True )
2583
1859
main_loop = gobject.MainLoop()
2584
1860
bus = dbus.SystemBus()
2585
1861
# End of Avahi example code
2586
1862
if use_dbus:
2587
1863
try:
2588
bus_name = dbus.service.BusName("se.recompile.Mandos",
2589
bus,
2590
do_not_queue=True)
2591
old_bus_name = dbus.service.BusName(
2592
"se.bsnet.fukt.Mandos", bus,
2593
do_not_queue=True)
2594
except dbus.exceptions.DBusException as e:
2595
logger.error("Disabling D-Bus:", exc_info=e)
1864
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1865
bus, do_not_queue=True)
1866
except dbus.exceptions.NameExistsException, e:
1867
logger.error(unicode(e) + ", disabling D-Bus")
2596
1868
use_dbus = False
2597
1869
server_settings["use_dbus"] = False
2598
1870
tcp_server.use_dbus = False
2599
if zeroconf:
2600
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2601
service = AvahiServiceToSyslog(
2602
name = server_settings["servicename"],
2603
servicetype = "_mandos._tcp",
2604
protocol = protocol,
2605
bus = bus)
2606
if server_settings["interface"]:
2607
service.interface = if_nametoindex(
2608
server_settings["interface"].encode("utf-8"))
1871
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1872
service = AvahiService(name = server_settings["servicename"],
1873
servicetype = "_mandos._tcp",
1874
protocol = protocol, bus = bus)
1875
if server_settings["interface"]:
1876
service.interface = (if_nametoindex
1877
(str(server_settings["interface"])))
2609
1878
2610
1879
global multiprocessing_manager
2611
1880
multiprocessing_manager = multiprocessing.Manager()
2613
1882
client_class = Client
2614
1883
if use_dbus:
2615
1884
client_class = functools.partial(ClientDBus, bus = bus)
2616
2617
client_settings = Client.config_parser(client_config)
2618
old_client_settings = {}
2619
clients_data = {}
2620
2621
# This is used to redirect stdout and stderr for checker processes
2622
global wnull
2623
wnull = open(os.devnull, "w") # A writable /dev/null
2624
# Only used if server is running in foreground but not in debug
2625
# mode
2626
if debug or not foreground:
2627
wnull.close()
2628
2629
# Get client data and settings from last running state.
2630
if server_settings["restore"]:
2631
try:
2632
with open(stored_state_path, "rb") as stored_state:
2633
clients_data, old_client_settings = pickle.load(
2634
stored_state)
2635
os.remove(stored_state_path)
2636
except IOError as e:
2637
if e.errno == errno.ENOENT:
2638
logger.warning("Could not load persistent state:"
2639
" {}".format(os.strerror(e.errno)))
2640
else:
2641
logger.critical("Could not load persistent state:",
2642
exc_info=e)
2643
raise
2644
except EOFError as e:
2645
logger.warning("Could not load persistent state: "
2646
"EOFError:",
2647
exc_info=e)
2648
2649
with PGPEngine() as pgp:
2650
for client_name, client in clients_data.items():
2651
# Skip removed clients
2652
if client_name not in client_settings:
2653
continue
2654
2655
# Decide which value to use after restoring saved state.
2656
# We have three different values: Old config file,
2657
# new config file, and saved state.
2658
# New config value takes precedence if it differs from old
2659
# config value, otherwise use saved state.
2660
for name, value in client_settings[client_name].items():
2661
try:
2662
# For each value in new config, check if it
2663
# differs from the old config value (Except for
2664
# the "secret" attribute)
2665
if (name != "secret"
2666
and (value !=
2667
old_client_settings[client_name][name])):
2668
client[name] = value
2669
except KeyError:
2670
pass
2671
2672
# Clients who has passed its expire date can still be
2673
# enabled if its last checker was successful. A Client
2674
# whose checker succeeded before we stored its state is
2675
# assumed to have successfully run all checkers during
2676
# downtime.
2677
if client["enabled"]:
2678
if datetime.datetime.utcnow() >= client["expires"]:
2679
if not client["last_checked_ok"]:
2680
logger.warning(
2681
"disabling client {} - Client never "
2682
"performed a successful checker".format(
2683
client_name))
2684
client["enabled"] = False
2685
elif client["last_checker_status"] != 0:
2686
logger.warning(
2687
"disabling client {} - Client last"
2688
" checker failed with error code"
2689
" {}".format(
2690
client_name,
2691
client["last_checker_status"]))
2692
client["enabled"] = False
2693
else:
2694
client["expires"] = (
2695
datetime.datetime.utcnow()
2696
+ client["timeout"])
2697
logger.debug("Last checker succeeded,"
2698
" keeping {} enabled".format(
2699
client_name))
1885
def client_config_items(config, section):
1886
special_settings = {
1887
"approved_by_default":
1888
lambda: config.getboolean(section,
1889
"approved_by_default"),
1890
}
1891
for name, value in config.items(section):
2700
1892
try:
2701
client["secret"] = pgp.decrypt(
2702
client["encrypted_secret"],
2703
client_settings[client_name]["secret"])
2704
except PGPError:
2705
# If decryption fails, we use secret from new settings
2706
logger.debug("Failed to decrypt {} old secret".format(
2707
client_name))
2708
client["secret"] = (client_settings[client_name]
2709
["secret"])
2710
2711
# Add/remove clients based on new changes made to config
2712
for client_name in (set(old_client_settings)
2713
- set(client_settings)):
2714
del clients_data[client_name]
2715
for client_name in (set(client_settings)
2716
- set(old_client_settings)):
2717
clients_data[client_name] = client_settings[client_name]
2718
2719
# Create all client objects
2720
for client_name, client in clients_data.items():
2721
tcp_server.clients[client_name] = client_class(
2722
name = client_name,
2723
settings = client,
2724
server_settings = server_settings)
2725
1893
yield (name, special_settings[name]())
1894
except KeyError:
1895
yield (name, value)
1896
1897
tcp_server.clients.update(set(
1898
client_class(name = section,
1899
config= dict(client_config_items(
1900
client_config, section)))
1901
for section in client_config.sections()))
2726
1902
if not tcp_server.clients:
2727
1903
logger.warning("No clients defined")
2728
2729
if not foreground:
2730
if pidfile is not None:
2731
pid = os.getpid()
2732
try:
2733
with pidfile:
2734
print(pid, file=pidfile)
2735
except IOError:
2736
logger.error("Could not write to file %r with PID %d",
2737
pidfilename, pid)
2738
del pidfile
1904
1905
if not debug:
1906
try:
1907
with pidfile:
1908
pid = os.getpid()
1909
pidfile.write(str(pid) + "\n".encode("utf-8"))
1910
del pidfile
1911
except IOError:
1912
logger.error("Could not write to file %r with PID %d",
1913
pidfilename, pid)
1914
except NameError:
1915
# "pidfile" was never created
1916
pass
2739
1917
del pidfilename
2740
1918
1919
signal.signal(signal.SIGINT, signal.SIG_IGN)
1920
2741
1921
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2742
1922
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2743
1923
2744
1924
if use_dbus:
2745
2746
@alternate_dbus_interfaces(
2747
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2748
class MandosDBusService(DBusObjectWithProperties):
1925
class MandosDBusService(dbus.service.Object):
2749
1926
"""A D-Bus proxy object"""
2750
2751
1927
def __init__(self):
2752
1928
dbus.service.Object.__init__(self, bus, "/")
2753
2754
_interface = "se.recompile.Mandos"
2755
2756
@dbus_interface_annotations(_interface)
2757
def _foo(self):
2758
return {
2759
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2760
"false" }
1929
_interface = "se.bsnet.fukt.Mandos"
2761
1930
2762
1931
@dbus.service.signal(_interface, signature="o")
2763
1932
def ClientAdded(self, objpath):
2777
1946
@dbus.service.method(_interface, out_signature="ao")
2778
1947
def GetAllClients(self):
2779
1948
"D-Bus method"
2780
return dbus.Array(c.dbus_object_path for c in
2781
tcp_server.clients.itervalues())
1949
return dbus.Array(c.dbus_object_path
1950
for c in tcp_server.clients)
2782
1951
2783
1952
@dbus.service.method(_interface,
2784
1953
out_signature="a{oa{sv}}")
2785
1954
def GetAllClientsWithProperties(self):
2786
1955
"D-Bus method"
2787
1956
return dbus.Dictionary(
2788
{ c.dbus_object_path: c.GetAll("")
2789
for c in tcp_server.clients.itervalues() },
1957
((c.dbus_object_path, c.GetAll(""))
1958
for c in tcp_server.clients),
2790
1959
signature="oa{sv}")
2791
1960
2792
1961
@dbus.service.method(_interface, in_signature="o")
2793
1962
def RemoveClient(self, object_path):
2794
1963
"D-Bus method"
2795
for c in tcp_server.clients.itervalues():
1964
for c in tcp_server.clients:
2796
1965
if c.dbus_object_path == object_path:
2797
del tcp_server.clients[c.name]
1966
tcp_server.clients.remove(c)
2798
1967
c.remove_from_connection()
2799
1968
# Don't signal anything except ClientRemoved
2800
1969
c.disable(quiet=True)
2809
1978
2810
1979
def cleanup():
2811
1980
"Cleanup function; run on exit"
2812
if zeroconf:
2813
service.cleanup()
2814
2815
multiprocessing.active_children()
2816
wnull.close()
2817
if not (tcp_server.clients or client_settings):
2818
return
2819
2820
# Store client before exiting. Secrets are encrypted with key
2821
# based on what config file has. If config file is
2822
# removed/edited, old secret will thus be unrecovable.
2823
clients = {}
2824
with PGPEngine() as pgp:
2825
for client in tcp_server.clients.itervalues():
2826
key = client_settings[client.name]["secret"]
2827
client.encrypted_secret = pgp.encrypt(client.secret,
2828
key)
2829
client_dict = {}
2830
2831
# A list of attributes that can not be pickled
2832
# + secret.
2833
exclude = { "bus", "changedstate", "secret",
2834
"checker", "server_settings" }
2835
for name, typ in inspect.getmembers(dbus.service
2836
.Object):
2837
exclude.add(name)
2838
2839
client_dict["encrypted_secret"] = (client
2840
.encrypted_secret)
2841
for attr in client.client_structure:
2842
if attr not in exclude:
2843
client_dict[attr] = getattr(client, attr)
2844
2845
clients[client.name] = client_dict
2846
del client_settings[client.name]["secret"]
2847
2848
try:
2849
with tempfile.NamedTemporaryFile(
2850
mode='wb',
2851
suffix=".pickle",
2852
prefix='clients-',
2853
dir=os.path.dirname(stored_state_path),
2854
delete=False) as stored_state:
2855
pickle.dump((clients, client_settings), stored_state)
2856
tempname = stored_state.name
2857
os.rename(tempname, stored_state_path)
2858
except (IOError, OSError) as e:
2859
if not debug:
2860
try:
2861
os.remove(tempname)
2862
except NameError:
2863
pass
2864
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2865
logger.warning("Could not save persistent state: {}"
2866
.format(os.strerror(e.errno)))
2867
else:
2868
logger.warning("Could not save persistent state:",
2869
exc_info=e)
2870
raise
2871
2872
# Delete all clients, and settings from config
1981
service.cleanup()
1982
2873
1983
while tcp_server.clients:
2874
name, client = tcp_server.clients.popitem()
1984
client = tcp_server.clients.pop()
2875
1985
if use_dbus:
2876
1986
client.remove_from_connection()
1987
client.disable_hook = None
2877
1988
# Don't signal anything except ClientRemoved
2878
1989
client.disable(quiet=True)
2879
1990
if use_dbus:
2880
1991
# Emit D-Bus signal
2881
mandos_dbus_service.ClientRemoved(
2882
client.dbus_object_path, client.name)
2883
client_settings.clear()
1992
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1993
client.name)
2884
1994
2885
1995
atexit.register(cleanup)
2886
1996
2887
for client in tcp_server.clients.itervalues():
1997
for client in tcp_server.clients:
2888
1998
if use_dbus:
2889
1999
# Emit D-Bus signal
2890
2000
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2891
# Need to initiate checking of clients
2892
if client.enabled:
2893
client.init_checker()
2001
client.enable()
2894
2002
2895
2003
tcp_server.enable()
2896
2004
tcp_server.server_activate()
2897
2005
2898
2006
# Find out what port we got
2899
if zeroconf:
2900
service.port = tcp_server.socket.getsockname()[1]
2007
service.port = tcp_server.socket.getsockname()[1]
2901
2008
if use_ipv6:
2902
2009
logger.info("Now listening on address %r, port %d,"
2903
" flowinfo %d, scope_id %d",
2904
*tcp_server.socket.getsockname())
2010
" flowinfo %d, scope_id %d"
2011
% tcp_server.socket.getsockname())
2905
2012
else: # IPv4
2906
logger.info("Now listening on address %r, port %d",
2907
*tcp_server.socket.getsockname())
2013
logger.info("Now listening on address %r, port %d"
2014
% tcp_server.socket.getsockname())
2908
2015
2909
2016
#service.interface = tcp_server.socket.getsockname()[3]
2910
2017
2911
2018
try:
2912
if zeroconf:
2913
# From the Avahi example code
2914
try:
2915
service.activate()
2916
except dbus.exceptions.DBusException as error:
2917
logger.critical("D-Bus Exception", exc_info=error)
2918
cleanup()
2919
sys.exit(1)
2920
# End of Avahi example code
2019
# From the Avahi example code
2020
try:
2021
service.activate()
2022
except dbus.exceptions.DBusException, error:
2023
logger.critical("DBusException: %s", error)
2024
cleanup()
2025
sys.exit(1)
2026
# End of Avahi example code
2921
2027
2922
2028
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2923
2029
lambda *args, **kwargs:
2926
2032
2927
2033
logger.debug("Starting main loop")
2928
2034
main_loop.run()
2929
except AvahiError as error:
2930
logger.critical("Avahi Error", exc_info=error)
2035
except AvahiError, error:
2036
logger.critical("AvahiError: %s", error)
2931
2037
cleanup()
2932
2038
sys.exit(1)
2933
2039
except KeyboardInterrupt:
2938
2044
# Must run before the D-Bus bus name gets deregistered
2939
2045
cleanup()
2940
2046
2941
2942
2047
if __name__ == '__main__':
2943
2048
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0