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- Committer: Teddy Hogeborn
- Date: 2015-08-10 19:10:26 UTC
- mfrom: (237.7.335 trunk)
- Revision ID: teddy@recompile.se-20150810191026-0jss9yy8t6o6pl39
Merge from trunk.
- files added:
- debian/mandos-client.examples
- debian/source
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
1
#!/usr/bin/python2.7
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 © 2008-2010 Teddy Hogeborn
15
# Copyright © 2008-2010 Björn Påhlsson
14
# Copyright © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 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@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
from future_builtins import *
38
39
try:
40
import SocketServer as socketserver
41
except ImportError:
42
import socketserver
37
43
import socket
38
import optparse
44
import argparse
39
45
import datetime
40
46
import errno
41
47
import gnutls.crypto
44
50
import gnutls.library.functions
45
51
import gnutls.library.constants
46
52
import gnutls.library.types
47
import ConfigParser as configparser
53
try:
54
import ConfigParser as configparser
55
except ImportError:
56
import configparser
48
57
import sys
49
58
import re
50
59
import os
59
68
import struct
60
69
import fcntl
61
70
import functools
62
import cPickle as pickle
71
try:
72
import cPickle as pickle
73
except ImportError:
74
import pickle
63
75
import multiprocessing
76
import types
77
import binascii
78
import tempfile
79
import itertools
80
import collections
81
import codecs
64
82
65
83
import dbus
66
84
import dbus.service
67
import gobject
85
try:
86
import gobject
87
except ImportError:
88
from gi.repository import GObject as gobject
68
89
import avahi
69
90
from dbus.mainloop.glib import DBusGMainLoop
70
91
import ctypes
80
101
except ImportError:
81
102
SO_BINDTODEVICE = None
82
103
83
84
version = "1.0.14"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
syslogger = (logging.handlers.SysLogHandler
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
95
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
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
101
236
102
237
class AvahiError(Exception):
103
238
def __init__(self, value, *args, **kwargs):
104
239
self.value = value
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
240
return super(AvahiError, self).__init__(value, *args,
241
**kwargs)
242
108
243
109
244
class AvahiServiceError(AvahiError):
110
245
pass
111
246
247
112
248
class AvahiGroupError(AvahiError):
113
249
pass
114
250
119
255
Attributes:
120
256
interface: integer; avahi.IF_UNSPEC or an interface index.
121
257
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
124
See <http://www.dns-sd.org/ServiceTypes.html>
258
name: string; Example: 'Mandos'
259
type: string; Example: '_mandos._tcp'.
260
See <https://www.iana.org/assignments/service-names-port-numbers>
125
261
port: integer; what port to announce
126
262
TXT: list of strings; TXT record for the service
127
263
domain: string; Domain to publish on, default to .local if empty.
133
269
server: D-Bus Server
134
270
bus: dbus.SystemBus()
135
271
"""
136
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
139
protocol = avahi.PROTO_UNSPEC, bus = None):
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):
140
284
self.interface = interface
141
285
self.name = name
142
286
self.type = servicetype
150
294
self.group = None # our entry group
151
295
self.server = None
152
296
self.bus = bus
153
def rename(self):
297
self.entry_group_state_changed_match = None
298
299
def rename(self, remove=True):
154
300
"""Derived from the Avahi example code"""
155
301
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
302
logger.critical("No suitable Zeroconf service name found"
303
" after %i retries, exiting.",
158
304
self.rename_count)
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
305
raise AvahiServiceError("Too many renames")
306
self.name = str(
307
self.server.GetAlternativeServiceName(self.name))
308
self.rename_count += 1
309
logger.info("Changing Zeroconf service name to %r ...",
162
310
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
self.remove()
311
if remove:
312
self.remove()
168
313
try:
169
314
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
172
self.cleanup()
173
os._exit(1)
174
self.rename_count += 1
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
175
325
def remove(self):
176
326
"""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
177
330
if self.group is not None:
178
331
self.group.Reset()
332
179
333
def add(self):
180
334
"""Derived from the Avahi example code"""
335
self.remove()
181
336
if self.group is None:
182
337
self.group = dbus.Interface(
183
338
self.bus.get_object(avahi.DBUS_NAME,
184
339
self.server.EntryGroupNew()),
185
340
avahi.DBUS_INTERFACE_ENTRY_GROUP)
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
341
self.entry_group_state_changed_match = (
342
self.group.connect_to_signal(
343
'StateChanged', self.entry_group_state_changed))
344
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
190
345
self.name, self.type)
191
346
self.group.AddService(
192
347
self.interface,
197
352
dbus.UInt16(self.port),
198
353
avahi.string_array_to_txt_array(self.TXT))
199
354
self.group.Commit()
355
200
356
def entry_group_state_changed(self, state, error):
201
357
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
358
logger.debug("Avahi entry group state change: %i", state)
203
359
204
360
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
361
logger.debug("Zeroconf service established.")
206
362
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
363
logger.info("Zeroconf service name collision.")
208
364
self.rename()
209
365
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
211
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
366
logger.critical("Avahi: Error in group state changed %s",
367
str(error))
368
raise AvahiGroupError("State changed: {!s}".format(error))
369
214
370
def cleanup(self):
215
371
"""Derived from the Avahi example code"""
216
372
if self.group is not None:
217
self.group.Free()
373
try:
374
self.group.Free()
375
except (dbus.exceptions.UnknownMethodException,
376
dbus.exceptions.DBusException):
377
pass
218
378
self.group = None
219
def server_state_changed(self, state):
379
self.remove()
380
381
def server_state_changed(self, state, error=None):
220
382
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
383
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()
225
397
elif state == avahi.SERVER_RUNNING:
226
self.add()
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
416
def activate(self):
228
417
"""Derived from the Avahi example code"""
229
418
if self.server is None:
230
419
self.server = dbus.Interface(
231
420
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
421
avahi.DBUS_PATH_SERVER,
422
follow_name_owner_changes=True),
233
423
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
424
self.server.connect_to_signal("StateChanged",
425
self.server_state_changed)
236
426
self.server_state_changed(self.server.GetState())
237
427
238
428
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
239
448
class Client(object):
240
449
"""A representation of a client host served by this server.
241
450
242
451
Attributes:
243
_approved: bool(); 'None' if not yet approved/disapproved
452
approved: bool(); 'None' if not yet approved/disapproved
244
453
approval_delay: datetime.timedelta(); Time to wait for approval
245
454
approval_duration: datetime.timedelta(); Duration of one approval
246
455
checker: subprocess.Popen(); a running checker process used
253
462
instance %(name)s can be used in the command.
254
463
checker_initiator_tag: a gobject event source tag, or None
255
464
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
256
467
current_checker_command: string; current running checker_command
257
disable_hook: If set, called by disable() as disable_hook(self)
258
468
disable_initiator_tag: a gobject event source tag, or None
259
469
enabled: bool()
260
470
fingerprint: string (40 or 32 hexadecimal digits); used to
263
473
interval: datetime.timedelta(); How often to start a new checker
264
474
last_approval_request: datetime.datetime(); (UTC) or None
265
475
last_checked_ok: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
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
482
name: string; from the config file, used in log messages and
268
483
D-Bus identifiers
269
484
secret: bytestring; sent verbatim (over TLS) to client
270
485
timeout: datetime.timedelta(); How long from last_checked_ok
271
486
until this client is disabled
487
extended_timeout: extra long timeout when secret has been sent
272
488
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()
273
492
"""
274
493
275
runtime_expansions = (u"approval_delay", u"approval_duration",
276
u"created", u"enabled", u"fingerprint",
277
u"host", u"interval", u"last_checked_ok",
278
u"last_enabled", u"name", u"timeout")
494
runtime_expansions = ("approval_delay", "approval_duration",
495
"created", "enabled", "expires",
496
"fingerprint", "host", "interval",
497
"last_approval_request", "last_checked_ok",
498
"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
}
279
510
280
511
@staticmethod
281
def _timedelta_to_milliseconds(td):
282
"Convert a datetime.timedelta() to milliseconds"
283
return ((td.days * 24 * 60 * 60 * 1000)
284
+ (td.seconds * 1000)
285
+ (td.microseconds // 1000))
286
287
def timeout_milliseconds(self):
288
"Return the 'timeout' attribute in milliseconds"
289
return self._timedelta_to_milliseconds(self.timeout)
290
291
def interval_milliseconds(self):
292
"Return the 'interval' attribute in milliseconds"
293
return self._timedelta_to_milliseconds(self.interval)
294
295
def approval_delay_milliseconds(self):
296
return self._timedelta_to_milliseconds(self.approval_delay)
297
298
def __init__(self, name = None, disable_hook=None, config=None):
299
"""Note: the 'checker' key in 'config' sets the
300
'checker_command' attribute and *not* the 'checker'
301
attribute."""
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):
302
562
self.name = name
303
if config is None:
304
config = {}
305
logger.debug(u"Creating client %r", self.name)
306
# Uppercase and remove spaces from fingerprint for later
307
# comparison purposes with return value from the fingerprint()
308
# function
309
self.fingerprint = (config[u"fingerprint"].upper()
310
.replace(u" ", u""))
311
logger.debug(u" Fingerprint: %s", self.fingerprint)
312
if u"secret" in config:
313
self.secret = config[u"secret"].decode(u"base64")
314
elif u"secfile" in config:
315
with open(os.path.expanduser(os.path.expandvars
316
(config[u"secfile"])),
317
"rb") as secfile:
318
self.secret = secfile.read()
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)
319
576
else:
320
raise TypeError(u"No secret or secfile for client %s"
321
% self.name)
322
self.host = config.get(u"host", u"")
323
self.created = datetime.datetime.utcnow()
324
self.enabled = False
325
self.last_approval_request = None
326
self.last_enabled = None
327
self.last_checked_ok = None
328
self.timeout = string_to_delta(config[u"timeout"])
329
self.interval = string_to_delta(config[u"interval"])
330
self.disable_hook = disable_hook
577
self.last_enabled = None
578
self.expires = None
579
580
logger.debug("Creating client %r", self.name)
581
logger.debug(" Fingerprint: %s", self.fingerprint)
582
self.created = settings.get("created",
583
datetime.datetime.utcnow())
584
585
# attributes specific for this server instance
331
586
self.checker = None
332
587
self.checker_initiator_tag = None
333
588
self.disable_initiator_tag = None
334
589
self.checker_callback_tag = None
335
self.checker_command = config[u"checker"]
336
590
self.current_checker_command = None
337
self.last_connect = None
338
self._approved = None
339
self.approved_by_default = config.get(u"approved_by_default",
340
True)
591
self.approved = None
341
592
self.approvals_pending = 0
342
self.approval_delay = string_to_delta(
343
config[u"approval_delay"])
344
self.approval_duration = string_to_delta(
345
config[u"approval_duration"])
346
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
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)
347
604
605
# Send notice to process children that client state has changed
348
606
def send_changedstate(self):
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
607
with self.changedstate:
608
self.changedstate.notify_all()
609
353
610
def enable(self):
354
611
"""Start this client's checker and timeout hooks"""
355
if getattr(self, u"enabled", False):
612
if getattr(self, "enabled", False):
356
613
# Already enabled
357
614
return
358
self.send_changedstate()
615
self.expires = datetime.datetime.utcnow() + self.timeout
616
self.enabled = True
359
617
self.last_enabled = datetime.datetime.utcnow()
360
# Schedule a new checker to be started an 'interval' from now,
361
# and every interval from then on.
362
self.checker_initiator_tag = (gobject.timeout_add
363
(self.interval_milliseconds(),
364
self.start_checker))
365
# Schedule a disable() when 'timeout' has passed
366
self.disable_initiator_tag = (gobject.timeout_add
367
(self.timeout_milliseconds(),
368
self.disable))
369
self.enabled = True
370
# Also start a new checker *right now*.
371
self.start_checker()
618
self.init_checker()
619
self.send_changedstate()
372
620
373
621
def disable(self, quiet=True):
374
622
"""Disable this client."""
375
623
if not getattr(self, "enabled", False):
376
624
return False
377
625
if not quiet:
626
logger.info("Disabling client %s", self.name)
627
if getattr(self, "disable_initiator_tag", None) is not None:
628
gobject.source_remove(self.disable_initiator_tag)
629
self.disable_initiator_tag = None
630
self.expires = None
631
if getattr(self, "checker_initiator_tag", None) is not None:
632
gobject.source_remove(self.checker_initiator_tag)
633
self.checker_initiator_tag = None
634
self.stop_checker()
635
self.enabled = False
636
if not quiet:
378
637
self.send_changedstate()
379
if not quiet:
380
logger.info(u"Disabling client %s", self.name)
381
if getattr(self, u"disable_initiator_tag", False):
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = None
384
if getattr(self, u"checker_initiator_tag", False):
385
gobject.source_remove(self.checker_initiator_tag)
386
self.checker_initiator_tag = None
387
self.stop_checker()
388
if self.disable_hook:
389
self.disable_hook(self)
390
self.enabled = False
391
638
# Do not run this again if called by a gobject.timeout_add
392
639
return False
393
640
394
641
def __del__(self):
395
self.disable_hook = None
396
642
self.disable()
397
643
398
def checker_callback(self, pid, condition, command):
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
662
"""The checker has completed, so take appropriate actions."""
400
663
self.checker_callback_tag = None
401
664
self.checker = None
402
if os.WIFEXITED(condition):
403
exitstatus = os.WEXITSTATUS(condition)
404
if exitstatus == 0:
405
logger.info(u"Checker for %(name)s succeeded",
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:
673
logger.info("Checker for %(name)s succeeded",
406
674
vars(self))
407
675
self.checked_ok()
408
676
else:
409
logger.info(u"Checker for %(name)s failed",
410
vars(self))
677
logger.info("Checker for %(name)s failed", vars(self))
411
678
else:
412
logger.warning(u"Checker for %(name)s crashed?",
679
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
681
logger.warning("Checker for %(name)s crashed?",
413
682
vars(self))
683
return False
414
684
415
685
def checked_ok(self):
416
"""Bump up the timeout for this client.
417
418
This should only be called when the client has been seen,
419
alive and well.
420
"""
686
"""Assert that the client has been seen, alive and well."""
421
687
self.last_checked_ok = datetime.datetime.utcnow()
422
gobject.source_remove(self.disable_initiator_tag)
423
self.disable_initiator_tag = (gobject.timeout_add
424
(self.timeout_milliseconds(),
425
self.disable))
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
426
703
427
704
def need_approval(self):
428
705
self.last_approval_request = datetime.datetime.utcnow()
433
710
If a checker already exists, leave it running and do
434
711
nothing."""
435
712
# The reason for not killing a running checker is that if we
436
# did that, then if a checker (for some reason) started
437
# running slowly and taking more than 'interval' time, the
438
# client would inevitably timeout, since no checker would get
439
# a chance to run to completion. If we instead leave running
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
440
717
# checkers alone, the checker would have to take more time
441
718
# than 'timeout' for the client to be disabled, which is as it
442
719
# should be.
443
720
444
# If a checker exists, make sure it is not a zombie
445
try:
446
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
447
except (AttributeError, OSError), error:
448
if (isinstance(error, OSError)
449
and error.errno != errno.ECHILD):
450
raise error
451
else:
452
if pid:
453
logger.warning(u"Checker was a zombie")
454
gobject.source_remove(self.checker_callback_tag)
455
self.checker_callback(pid, status,
456
self.current_checker_command)
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
457
725
# Start a new checker if needed
458
726
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 }
459
731
try:
460
# In case checker_command has exactly one % operator
461
command = self.checker_command % self.host
462
except TypeError:
463
# Escape attributes for the shell
464
escaped_attrs = dict(
465
(attr,
466
re.escape(unicode(str(getattr(self, attr, u"")),
467
errors=
468
u'replace')))
469
for attr in
470
self.runtime_expansions)
471
472
try:
473
command = self.checker_command % escaped_attrs
474
except TypeError, error:
475
logger.error(u'Could not format string "%s":'
476
u' %s', self.checker_command, error)
477
return True # Try again later
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
478
738
self.current_checker_command = command
479
try:
480
logger.info(u"Starting checker %r for %s",
481
command, self.name)
482
# We don't need to redirect stdout and stderr, since
483
# in normal mode, that is already done by daemon(),
484
# and in debug mode we don't want to. (Stdin is
485
# always replaced by /dev/null.)
486
self.checker = subprocess.Popen(command,
487
close_fds=True,
488
shell=True, cwd=u"/")
489
self.checker_callback_tag = (gobject.child_watch_add
490
(self.checker.pid,
491
self.checker_callback,
492
data=command))
493
# The checker may have completed before the gobject
494
# watch was added. Check for this.
495
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
496
if pid:
497
gobject.source_remove(self.checker_callback_tag)
498
self.checker_callback(pid, status, command)
499
except OSError, error:
500
logger.error(u"Failed to start subprocess: %s",
501
error)
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)
502
764
# Re-run this periodically if run by gobject.timeout_add
503
765
return True
504
766
507
769
if self.checker_callback_tag:
508
770
gobject.source_remove(self.checker_callback_tag)
509
771
self.checker_callback_tag = None
510
if getattr(self, u"checker", None) is None:
772
if getattr(self, "checker", None) is None:
511
773
return
512
logger.debug(u"Stopping checker for %(name)s", vars(self))
513
try:
514
os.kill(self.checker.pid, signal.SIGTERM)
515
#time.sleep(0.5)
516
#if self.checker.poll() is None:
517
# os.kill(self.checker.pid, signal.SIGKILL)
518
except OSError, error:
519
if error.errno != errno.ESRCH: # No such process
520
raise
774
logger.debug("Stopping checker for %(name)s", vars(self))
775
self.checker.terminate()
521
776
self.checker = None
522
777
523
def dbus_service_property(dbus_interface, signature=u"v",
524
access=u"readwrite", byte_arrays=False):
778
779
def dbus_service_property(dbus_interface,
780
signature="v",
781
access="readwrite",
782
byte_arrays=False):
525
783
"""Decorators for marking methods of a DBusObjectWithProperties to
526
784
become properties on the D-Bus.
527
785
534
792
"""
535
793
# Encoding deeply encoded byte arrays is not supported yet by the
536
794
# "Set" method, so we fail early here:
537
if byte_arrays and signature != u"ay":
538
raise ValueError(u"Byte arrays not supported for non-'ay'"
539
u" signature %r" % signature)
795
if byte_arrays and signature != "ay":
796
raise ValueError("Byte arrays not supported for non-'ay'"
797
" signature {!r}".format(signature))
798
540
799
def decorator(func):
541
800
func._dbus_is_property = True
542
801
func._dbus_interface = dbus_interface
543
802
func._dbus_signature = signature
544
803
func._dbus_access = access
545
804
func._dbus_name = func.__name__
546
if func._dbus_name.endswith(u"_dbus_property"):
805
if func._dbus_name.endswith("_dbus_property"):
547
806
func._dbus_name = func._dbus_name[:-14]
548
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
549
return func
807
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
808
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
See also the DBusObjectWithAnnotations class.
847
"""
848
849
def decorator(func):
850
func._dbus_annotations = annotations
851
return func
852
550
853
return decorator
551
854
552
855
553
856
class DBusPropertyException(dbus.exceptions.DBusException):
554
857
"""A base class for D-Bus property-related exceptions
555
858
"""
556
def __unicode__(self):
557
return unicode(str(self))
859
pass
558
860
559
861
560
862
class DBusPropertyAccessException(DBusPropertyException):
569
871
pass
570
872
571
873
572
class DBusObjectWithProperties(dbus.service.Object):
874
class DBusObjectWithAnnotations(dbus.service.Object):
875
"""A D-Bus object with annotations.
876
877
Classes inheriting from this can use the dbus_annotations
878
decorator to add annotations to methods or signals.
879
"""
880
881
@staticmethod
882
def _is_dbus_thing(thing):
883
"""Returns a function testing if an attribute is a D-Bus thing
884
885
If called like _is_dbus_thing("method") it returns a function
886
suitable for use as predicate to inspect.getmembers().
887
"""
888
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
889
False)
890
891
def _get_all_dbus_things(self, thing):
892
"""Returns a generator of (name, attribute) pairs
893
"""
894
return ((getattr(athing.__get__(self), "_dbus_name", name),
895
athing.__get__(self))
896
for cls in self.__class__.__mro__
897
for name, athing in
898
inspect.getmembers(cls, self._is_dbus_thing(thing)))
899
900
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
901
out_signature = "s",
902
path_keyword = 'object_path',
903
connection_keyword = 'connection')
904
def Introspect(self, object_path, connection):
905
"""Overloading of standard D-Bus method.
906
907
Inserts annotation tags on methods and signals.
908
"""
909
xmlstring = dbus.service.Object.Introspect(self, object_path,
910
connection)
911
try:
912
document = xml.dom.minidom.parseString(xmlstring)
913
914
for if_tag in document.getElementsByTagName("interface"):
915
# Add annotation tags
916
for typ in ("method", "signal"):
917
for tag in if_tag.getElementsByTagName(typ):
918
annots = dict()
919
for name, prop in (self.
920
_get_all_dbus_things(typ)):
921
if (name == tag.getAttribute("name")
922
and prop._dbus_interface
923
== if_tag.getAttribute("name")):
924
annots.update(getattr(
925
prop, "_dbus_annotations", {}))
926
for name, value in annots.items():
927
ann_tag = document.createElement(
928
"annotation")
929
ann_tag.setAttribute("name", name)
930
ann_tag.setAttribute("value", value)
931
tag.appendChild(ann_tag)
932
# Add interface annotation tags
933
for annotation, value in dict(
934
itertools.chain.from_iterable(
935
annotations().items()
936
for name, annotations
937
in self._get_all_dbus_things("interface")
938
if name == if_tag.getAttribute("name")
939
)).items():
940
ann_tag = document.createElement("annotation")
941
ann_tag.setAttribute("name", annotation)
942
ann_tag.setAttribute("value", value)
943
if_tag.appendChild(ann_tag)
944
# Fix argument name for the Introspect method itself
945
if (if_tag.getAttribute("name")
946
== dbus.INTROSPECTABLE_IFACE):
947
for cn in if_tag.getElementsByTagName("method"):
948
if cn.getAttribute("name") == "Introspect":
949
for arg in cn.getElementsByTagName("arg"):
950
if (arg.getAttribute("direction")
951
== "out"):
952
arg.setAttribute("name",
953
"xml_data")
954
xmlstring = document.toxml("utf-8")
955
document.unlink()
956
except (AttributeError, xml.dom.DOMException,
957
xml.parsers.expat.ExpatError) as error:
958
logger.error("Failed to override Introspection method",
959
exc_info=error)
960
return xmlstring
961
962
963
class DBusObjectWithProperties(DBusObjectWithAnnotations):
573
964
"""A D-Bus object with properties.
574
965
575
966
Classes inheriting from this can use the dbus_service_property
576
967
decorator to expose methods as D-Bus properties. It exposes the
577
968
standard Get(), Set(), and GetAll() methods on the D-Bus.
578
969
"""
579
970
580
@staticmethod
581
def _is_dbus_property(obj):
582
return getattr(obj, u"_dbus_is_property", False)
583
584
def _get_all_dbus_properties(self):
585
"""Returns a generator of (name, attribute) pairs
586
"""
587
return ((prop._dbus_name, prop)
588
for name, prop in
589
inspect.getmembers(self, self._is_dbus_property))
590
591
971
def _get_dbus_property(self, interface_name, property_name):
592
972
"""Returns a bound method if one exists which is a D-Bus
593
973
property with the specified name and interface.
594
974
"""
595
for name in (property_name,
596
property_name + u"_dbus_property"):
597
prop = getattr(self, name, None)
598
if (prop is None
599
or not self._is_dbus_property(prop)
600
or prop._dbus_name != property_name
601
or (interface_name and prop._dbus_interface
602
and interface_name != prop._dbus_interface)):
603
continue
604
return prop
975
for cls in self.__class__.__mro__:
976
for name, value in inspect.getmembers(
977
cls, self._is_dbus_thing("property")):
978
if (value._dbus_name == property_name
979
and value._dbus_interface == interface_name):
980
return value.__get__(self)
981
605
982
# No such property
606
raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
+ interface_name + u"."
608
+ property_name)
609
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
611
out_signature=u"v")
983
raise DBusPropertyNotFound("{}:{}.{}".format(
984
self.dbus_object_path, interface_name, property_name))
985
986
@classmethod
987
def _get_all_interface_names(cls):
988
"""Get a sequence of all interfaces supported by an object"""
989
return (name for name in set(getattr(getattr(x, attr),
990
"_dbus_interface", None)
991
for x in (inspect.getmro(cls))
992
for attr in dir(x))
993
if name is not None)
994
995
@dbus.service.method(dbus.PROPERTIES_IFACE,
996
in_signature="ss",
997
out_signature="v")
612
998
def Get(self, interface_name, property_name):
613
999
"""Standard D-Bus property Get() method, see D-Bus standard.
614
1000
"""
615
1001
prop = self._get_dbus_property(interface_name, property_name)
616
if prop._dbus_access == u"write":
1002
if prop._dbus_access == "write":
617
1003
raise DBusPropertyAccessException(property_name)
618
1004
value = prop()
619
if not hasattr(value, u"variant_level"):
1005
if not hasattr(value, "variant_level"):
620
1006
return value
621
1007
return type(value)(value, variant_level=value.variant_level+1)
622
1008
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1009
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
624
1010
def Set(self, interface_name, property_name, value):
625
1011
"""Standard D-Bus property Set() method, see D-Bus standard.
626
1012
"""
627
1013
prop = self._get_dbus_property(interface_name, property_name)
628
if prop._dbus_access == u"read":
1014
if prop._dbus_access == "read":
629
1015
raise DBusPropertyAccessException(property_name)
630
if prop._dbus_get_args_options[u"byte_arrays"]:
1016
if prop._dbus_get_args_options["byte_arrays"]:
631
1017
# The byte_arrays option is not supported yet on
632
1018
# signatures other than "ay".
633
if prop._dbus_signature != u"ay":
634
raise ValueError
635
value = dbus.ByteArray(''.join(unichr(byte)
636
for byte in value))
1019
if prop._dbus_signature != "ay":
1020
raise ValueError("Byte arrays not supported for non-"
1021
"'ay' signature {!r}"
1022
.format(prop._dbus_signature))
1023
value = dbus.ByteArray(b''.join(chr(byte)
1024
for byte in value))
637
1025
prop(value)
638
1026
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
1027
@dbus.service.method(dbus.PROPERTIES_IFACE,
1028
in_signature="s",
1029
out_signature="a{sv}")
641
1030
def GetAll(self, interface_name):
642
1031
"""Standard D-Bus property GetAll() method, see D-Bus
643
1032
standard.
644
1033
645
1034
Note: Will not include properties with access="write".
646
1035
"""
647
all = {}
648
for name, prop in self._get_all_dbus_properties():
1036
properties = {}
1037
for name, prop in self._get_all_dbus_things("property"):
649
1038
if (interface_name
650
1039
and interface_name != prop._dbus_interface):
651
1040
# Interface non-empty but did not match
652
1041
continue
653
1042
# Ignore write-only properties
654
if prop._dbus_access == u"write":
1043
if prop._dbus_access == "write":
655
1044
continue
656
1045
value = prop()
657
if not hasattr(value, u"variant_level"):
658
all[name] = value
1046
if not hasattr(value, "variant_level"):
1047
properties[name] = value
659
1048
continue
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
1049
properties[name] = type(value)(
1050
value, variant_level = value.variant_level + 1)
1051
return dbus.Dictionary(properties, signature="sv")
1052
1053
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1054
def PropertiesChanged(self, interface_name, changed_properties,
1055
invalidated_properties):
1056
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1057
standard.
1058
"""
1059
pass
663
1060
664
1061
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
665
out_signature=u"s",
1062
out_signature="s",
666
1063
path_keyword='object_path',
667
1064
connection_keyword='connection')
668
1065
def Introspect(self, object_path, connection):
669
"""Standard D-Bus method, overloaded to insert property tags.
1066
"""Overloading of standard D-Bus method.
1067
1068
Inserts property tags and interface annotation tags.
670
1069
"""
671
xmlstring = dbus.service.Object.Introspect(self, object_path,
672
connection)
1070
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1071
object_path,
1072
connection)
673
1073
try:
674
1074
document = xml.dom.minidom.parseString(xmlstring)
1075
675
1076
def make_tag(document, name, prop):
676
e = document.createElement(u"property")
677
e.setAttribute(u"name", name)
678
e.setAttribute(u"type", prop._dbus_signature)
679
e.setAttribute(u"access", prop._dbus_access)
1077
e = document.createElement("property")
1078
e.setAttribute("name", name)
1079
e.setAttribute("type", prop._dbus_signature)
1080
e.setAttribute("access", prop._dbus_access)
680
1081
return e
681
for if_tag in document.getElementsByTagName(u"interface"):
1082
1083
for if_tag in document.getElementsByTagName("interface"):
1084
# Add property tags
682
1085
for tag in (make_tag(document, name, prop)
683
1086
for name, prop
684
in self._get_all_dbus_properties()
1087
in self._get_all_dbus_things("property")
685
1088
if prop._dbus_interface
686
== if_tag.getAttribute(u"name")):
1089
== if_tag.getAttribute("name")):
687
1090
if_tag.appendChild(tag)
1091
# Add annotation tags for properties
1092
for tag in if_tag.getElementsByTagName("property"):
1093
annots = dict()
1094
for name, prop in self._get_all_dbus_things(
1095
"property"):
1096
if (name == tag.getAttribute("name")
1097
and prop._dbus_interface
1098
== if_tag.getAttribute("name")):
1099
annots.update(getattr(
1100
prop, "_dbus_annotations", {}))
1101
for name, value in annots.items():
1102
ann_tag = document.createElement(
1103
"annotation")
1104
ann_tag.setAttribute("name", name)
1105
ann_tag.setAttribute("value", value)
1106
tag.appendChild(ann_tag)
688
1107
# Add the names to the return values for the
689
1108
# "org.freedesktop.DBus.Properties" methods
690
if (if_tag.getAttribute(u"name")
691
== u"org.freedesktop.DBus.Properties"):
692
for cn in if_tag.getElementsByTagName(u"method"):
693
if cn.getAttribute(u"name") == u"Get":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"value")
698
elif cn.getAttribute(u"name") == u"GetAll":
699
for arg in cn.getElementsByTagName(u"arg"):
700
if (arg.getAttribute(u"direction")
701
== u"out"):
702
arg.setAttribute(u"name", u"props")
703
xmlstring = document.toxml(u"utf-8")
704
document.unlink()
705
except (AttributeError, xml.dom.DOMException,
706
xml.parsers.expat.ExpatError), error:
707
logger.error(u"Failed to override Introspection method",
708
error)
709
return xmlstring
710
711
1109
if (if_tag.getAttribute("name")
1110
== "org.freedesktop.DBus.Properties"):
1111
for cn in if_tag.getElementsByTagName("method"):
1112
if cn.getAttribute("name") == "Get":
1113
for arg in cn.getElementsByTagName("arg"):
1114
if (arg.getAttribute("direction")
1115
== "out"):
1116
arg.setAttribute("name", "value")
1117
elif cn.getAttribute("name") == "GetAll":
1118
for arg in cn.getElementsByTagName("arg"):
1119
if (arg.getAttribute("direction")
1120
== "out"):
1121
arg.setAttribute("name", "props")
1122
xmlstring = document.toxml("utf-8")
1123
document.unlink()
1124
except (AttributeError, xml.dom.DOMException,
1125
xml.parsers.expat.ExpatError) as error:
1126
logger.error("Failed to override Introspection method",
1127
exc_info=error)
1128
return xmlstring
1129
1130
try:
1131
dbus.OBJECT_MANAGER_IFACE
1132
except AttributeError:
1133
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1134
1135
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1136
"""A D-Bus object with an ObjectManager.
1137
1138
Classes inheriting from this exposes the standard
1139
GetManagedObjects call and the InterfacesAdded and
1140
InterfacesRemoved signals on the standard
1141
"org.freedesktop.DBus.ObjectManager" interface.
1142
1143
Note: No signals are sent automatically; they must be sent
1144
manually.
1145
"""
1146
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1147
out_signature = "a{oa{sa{sv}}}")
1148
def GetManagedObjects(self):
1149
"""This function must be overridden"""
1150
raise NotImplementedError()
1151
1152
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1153
signature = "oa{sa{sv}}")
1154
def InterfacesAdded(self, object_path, interfaces_and_properties):
1155
pass
1156
1157
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1158
def InterfacesRemoved(self, object_path, interfaces):
1159
pass
1160
1161
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1162
out_signature = "s",
1163
path_keyword = 'object_path',
1164
connection_keyword = 'connection')
1165
def Introspect(self, object_path, connection):
1166
"""Overloading of standard D-Bus method.
1167
1168
Override return argument name of GetManagedObjects to be
1169
"objpath_interfaces_and_properties"
1170
"""
1171
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1172
object_path,
1173
connection)
1174
try:
1175
document = xml.dom.minidom.parseString(xmlstring)
1176
1177
for if_tag in document.getElementsByTagName("interface"):
1178
# Fix argument name for the GetManagedObjects method
1179
if (if_tag.getAttribute("name")
1180
== dbus.OBJECT_MANAGER_IFACE):
1181
for cn in if_tag.getElementsByTagName("method"):
1182
if (cn.getAttribute("name")
1183
== "GetManagedObjects"):
1184
for arg in cn.getElementsByTagName("arg"):
1185
if (arg.getAttribute("direction")
1186
== "out"):
1187
arg.setAttribute(
1188
"name",
1189
"objpath_interfaces"
1190
"_and_properties")
1191
xmlstring = document.toxml("utf-8")
1192
document.unlink()
1193
except (AttributeError, xml.dom.DOMException,
1194
xml.parsers.expat.ExpatError) as error:
1195
logger.error("Failed to override Introspection method",
1196
exc_info = error)
1197
return xmlstring
1198
1199
def datetime_to_dbus(dt, variant_level=0):
1200
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1201
if dt is None:
1202
return dbus.String("", variant_level = variant_level)
1203
return dbus.String(dt.isoformat(), variant_level=variant_level)
1204
1205
1206
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1207
"""A class decorator; applied to a subclass of
1208
dbus.service.Object, it will add alternate D-Bus attributes with
1209
interface names according to the "alt_interface_names" mapping.
1210
Usage:
1211
1212
@alternate_dbus_interfaces({"org.example.Interface":
1213
"net.example.AlternateInterface"})
1214
class SampleDBusObject(dbus.service.Object):
1215
@dbus.service.method("org.example.Interface")
1216
def SampleDBusMethod():
1217
pass
1218
1219
The above "SampleDBusMethod" on "SampleDBusObject" will be
1220
reachable via two interfaces: "org.example.Interface" and
1221
"net.example.AlternateInterface", the latter of which will have
1222
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1223
"true", unless "deprecate" is passed with a False value.
1224
1225
This works for methods and signals, and also for D-Bus properties
1226
(from DBusObjectWithProperties) and interfaces (from the
1227
dbus_interface_annotations decorator).
1228
"""
1229
1230
def wrapper(cls):
1231
for orig_interface_name, alt_interface_name in (
1232
alt_interface_names.items()):
1233
attr = {}
1234
interface_names = set()
1235
# Go though all attributes of the class
1236
for attrname, attribute in inspect.getmembers(cls):
1237
# Ignore non-D-Bus attributes, and D-Bus attributes
1238
# with the wrong interface name
1239
if (not hasattr(attribute, "_dbus_interface")
1240
or not attribute._dbus_interface.startswith(
1241
orig_interface_name)):
1242
continue
1243
# Create an alternate D-Bus interface name based on
1244
# the current name
1245
alt_interface = attribute._dbus_interface.replace(
1246
orig_interface_name, alt_interface_name)
1247
interface_names.add(alt_interface)
1248
# Is this a D-Bus signal?
1249
if getattr(attribute, "_dbus_is_signal", False):
1250
if sys.version_info.major == 2:
1251
# Extract the original non-method undecorated
1252
# function by black magic
1253
nonmethod_func = (dict(
1254
zip(attribute.func_code.co_freevars,
1255
attribute.__closure__))
1256
["func"].cell_contents)
1257
else:
1258
nonmethod_func = attribute
1259
# Create a new, but exactly alike, function
1260
# object, and decorate it to be a new D-Bus signal
1261
# with the alternate D-Bus interface name
1262
if sys.version_info.major == 2:
1263
new_function = types.FunctionType(
1264
nonmethod_func.func_code,
1265
nonmethod_func.func_globals,
1266
nonmethod_func.func_name,
1267
nonmethod_func.func_defaults,
1268
nonmethod_func.func_closure)
1269
else:
1270
new_function = types.FunctionType(
1271
nonmethod_func.__code__,
1272
nonmethod_func.__globals__,
1273
nonmethod_func.__name__,
1274
nonmethod_func.__defaults__,
1275
nonmethod_func.__closure__)
1276
new_function = (dbus.service.signal(
1277
alt_interface,
1278
attribute._dbus_signature)(new_function))
1279
# Copy annotations, if any
1280
try:
1281
new_function._dbus_annotations = dict(
1282
attribute._dbus_annotations)
1283
except AttributeError:
1284
pass
1285
# Define a creator of a function to call both the
1286
# original and alternate functions, so both the
1287
# original and alternate signals gets sent when
1288
# the function is called
1289
def fixscope(func1, func2):
1290
"""This function is a scope container to pass
1291
func1 and func2 to the "call_both" function
1292
outside of its arguments"""
1293
1294
@functools.wraps(func2)
1295
def call_both(*args, **kwargs):
1296
"""This function will emit two D-Bus
1297
signals by calling func1 and func2"""
1298
func1(*args, **kwargs)
1299
func2(*args, **kwargs)
1300
# Make wrapper function look like a D-Bus signal
1301
for name, attr in inspect.getmembers(func2):
1302
if name.startswith("_dbus_"):
1303
setattr(call_both, name, attr)
1304
1305
return call_both
1306
# Create the "call_both" function and add it to
1307
# the class
1308
attr[attrname] = fixscope(attribute, new_function)
1309
# Is this a D-Bus method?
1310
elif getattr(attribute, "_dbus_is_method", False):
1311
# Create a new, but exactly alike, function
1312
# object. Decorate it to be a new D-Bus method
1313
# with the alternate D-Bus interface name. Add it
1314
# to the class.
1315
attr[attrname] = (
1316
dbus.service.method(
1317
alt_interface,
1318
attribute._dbus_in_signature,
1319
attribute._dbus_out_signature)
1320
(types.FunctionType(attribute.func_code,
1321
attribute.func_globals,
1322
attribute.func_name,
1323
attribute.func_defaults,
1324
attribute.func_closure)))
1325
# Copy annotations, if any
1326
try:
1327
attr[attrname]._dbus_annotations = dict(
1328
attribute._dbus_annotations)
1329
except AttributeError:
1330
pass
1331
# Is this a D-Bus property?
1332
elif getattr(attribute, "_dbus_is_property", False):
1333
# Create a new, but exactly alike, function
1334
# object, and decorate it to be a new D-Bus
1335
# property with the alternate D-Bus interface
1336
# name. Add it to the class.
1337
attr[attrname] = (dbus_service_property(
1338
alt_interface, attribute._dbus_signature,
1339
attribute._dbus_access,
1340
attribute._dbus_get_args_options
1341
["byte_arrays"])
1342
(types.FunctionType(
1343
attribute.func_code,
1344
attribute.func_globals,
1345
attribute.func_name,
1346
attribute.func_defaults,
1347
attribute.func_closure)))
1348
# Copy annotations, if any
1349
try:
1350
attr[attrname]._dbus_annotations = dict(
1351
attribute._dbus_annotations)
1352
except AttributeError:
1353
pass
1354
# Is this a D-Bus interface?
1355
elif getattr(attribute, "_dbus_is_interface", False):
1356
# Create a new, but exactly alike, function
1357
# object. Decorate it to be a new D-Bus interface
1358
# with the alternate D-Bus interface name. Add it
1359
# to the class.
1360
attr[attrname] = (
1361
dbus_interface_annotations(alt_interface)
1362
(types.FunctionType(attribute.func_code,
1363
attribute.func_globals,
1364
attribute.func_name,
1365
attribute.func_defaults,
1366
attribute.func_closure)))
1367
if deprecate:
1368
# Deprecate all alternate interfaces
1369
iname="_AlternateDBusNames_interface_annotation{}"
1370
for interface_name in interface_names:
1371
1372
@dbus_interface_annotations(interface_name)
1373
def func(self):
1374
return { "org.freedesktop.DBus.Deprecated":
1375
"true" }
1376
# Find an unused name
1377
for aname in (iname.format(i)
1378
for i in itertools.count()):
1379
if aname not in attr:
1380
attr[aname] = func
1381
break
1382
if interface_names:
1383
# Replace the class with a new subclass of it with
1384
# methods, signals, etc. as created above.
1385
cls = type(b"{}Alternate".format(cls.__name__),
1386
(cls, ), attr)
1387
return cls
1388
1389
return wrapper
1390
1391
1392
@alternate_dbus_interfaces({"se.recompile.Mandos":
1393
"se.bsnet.fukt.Mandos"})
712
1394
class ClientDBus(Client, DBusObjectWithProperties):
713
1395
"""A Client class using D-Bus
714
1396
718
1400
"""
719
1401
720
1402
runtime_expansions = (Client.runtime_expansions
721
+ (u"dbus_object_path",))
1403
+ ("dbus_object_path", ))
1404
1405
_interface = "se.recompile.Mandos.Client"
722
1406
723
1407
# dbus.service.Object doesn't use super(), so we can't either.
724
1408
725
1409
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
727
1410
self.bus = bus
728
1411
Client.__init__(self, *args, **kwargs)
729
1412
# Only now, when this client is initialized, can it show up on
730
1413
# the D-Bus
731
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
734
self.dbus_object_path = (dbus.ObjectPath
735
(u"/clients/" + client_object_name))
1414
client_object_name = str(self.name).translate(
1415
{ord("."): ord("_"),
1416
ord("-"): ord("_")})
1417
self.dbus_object_path = dbus.ObjectPath(
1418
"/clients/" + client_object_name)
736
1419
DBusObjectWithProperties.__init__(self, self.bus,
737
1420
self.dbus_object_path)
738
739
def _get_approvals_pending(self):
740
return self._approvals_pending
741
def _set_approvals_pending(self, value):
742
old_value = self._approvals_pending
743
self._approvals_pending = value
744
bval = bool(value)
745
if (hasattr(self, "dbus_object_path")
746
and bval is not bool(old_value)):
747
dbus_bool = dbus.Boolean(bval, variant_level=1)
748
self.PropertyChanged(dbus.String(u"ApprovalPending"),
749
dbus_bool)
750
751
approvals_pending = property(_get_approvals_pending,
752
_set_approvals_pending)
753
del _get_approvals_pending, _set_approvals_pending
754
755
@staticmethod
756
def _datetime_to_dbus(dt, variant_level=0):
757
"""Convert a UTC datetime.datetime() to a D-Bus type."""
758
return dbus.String(dt.isoformat(),
759
variant_level=variant_level)
760
761
def enable(self):
762
oldstate = getattr(self, u"enabled", False)
763
r = Client.enable(self)
764
if oldstate != self.enabled:
765
# Emit D-Bus signals
766
self.PropertyChanged(dbus.String(u"Enabled"),
767
dbus.Boolean(True, variant_level=1))
768
self.PropertyChanged(
769
dbus.String(u"LastEnabled"),
770
self._datetime_to_dbus(self.last_enabled,
771
variant_level=1))
772
return r
773
774
def disable(self, quiet = False):
775
oldstate = getattr(self, u"enabled", False)
776
r = Client.disable(self, quiet=quiet)
777
if not quiet and oldstate != self.enabled:
778
# Emit D-Bus signal
779
self.PropertyChanged(dbus.String(u"Enabled"),
780
dbus.Boolean(False, variant_level=1))
781
return r
1421
1422
def notifychangeproperty(transform_func, dbus_name,
1423
type_func=lambda x: x,
1424
variant_level=1,
1425
invalidate_only=False,
1426
_interface=_interface):
1427
""" Modify a variable so that it's a property which announces
1428
its changes to DBus.
1429
1430
transform_fun: Function that takes a value and a variant_level
1431
and transforms it to a D-Bus type.
1432
dbus_name: D-Bus name of the variable
1433
type_func: Function that transform the value before sending it
1434
to the D-Bus. Default: no transform
1435
variant_level: D-Bus variant level. Default: 1
1436
"""
1437
attrname = "_{}".format(dbus_name)
1438
1439
def setter(self, value):
1440
if hasattr(self, "dbus_object_path"):
1441
if (not hasattr(self, attrname) or
1442
type_func(getattr(self, attrname, None))
1443
!= type_func(value)):
1444
if invalidate_only:
1445
self.PropertiesChanged(
1446
_interface, dbus.Dictionary(),
1447
dbus.Array((dbus_name, )))
1448
else:
1449
dbus_value = transform_func(
1450
type_func(value),
1451
variant_level = variant_level)
1452
self.PropertyChanged(dbus.String(dbus_name),
1453
dbus_value)
1454
self.PropertiesChanged(
1455
_interface,
1456
dbus.Dictionary({ dbus.String(dbus_name):
1457
dbus_value }),
1458
dbus.Array())
1459
setattr(self, attrname, value)
1460
1461
return property(lambda self: getattr(self, attrname), setter)
1462
1463
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1464
approvals_pending = notifychangeproperty(dbus.Boolean,
1465
"ApprovalPending",
1466
type_func = bool)
1467
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1468
last_enabled = notifychangeproperty(datetime_to_dbus,
1469
"LastEnabled")
1470
checker = notifychangeproperty(
1471
dbus.Boolean, "CheckerRunning",
1472
type_func = lambda checker: checker is not None)
1473
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1474
"LastCheckedOK")
1475
last_checker_status = notifychangeproperty(dbus.Int16,
1476
"LastCheckerStatus")
1477
last_approval_request = notifychangeproperty(
1478
datetime_to_dbus, "LastApprovalRequest")
1479
approved_by_default = notifychangeproperty(dbus.Boolean,
1480
"ApprovedByDefault")
1481
approval_delay = notifychangeproperty(
1482
dbus.UInt64, "ApprovalDelay",
1483
type_func = lambda td: td.total_seconds() * 1000)
1484
approval_duration = notifychangeproperty(
1485
dbus.UInt64, "ApprovalDuration",
1486
type_func = lambda td: td.total_seconds() * 1000)
1487
host = notifychangeproperty(dbus.String, "Host")
1488
timeout = notifychangeproperty(
1489
dbus.UInt64, "Timeout",
1490
type_func = lambda td: td.total_seconds() * 1000)
1491
extended_timeout = notifychangeproperty(
1492
dbus.UInt64, "ExtendedTimeout",
1493
type_func = lambda td: td.total_seconds() * 1000)
1494
interval = notifychangeproperty(
1495
dbus.UInt64, "Interval",
1496
type_func = lambda td: td.total_seconds() * 1000)
1497
checker_command = notifychangeproperty(dbus.String, "Checker")
1498
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1499
invalidate_only=True)
1500
1501
del notifychangeproperty
782
1502
783
1503
def __del__(self, *args, **kwargs):
784
1504
try:
785
1505
self.remove_from_connection()
786
1506
except LookupError:
787
1507
pass
788
if hasattr(DBusObjectWithProperties, u"__del__"):
1508
if hasattr(DBusObjectWithProperties, "__del__"):
789
1509
DBusObjectWithProperties.__del__(self, *args, **kwargs)
790
1510
Client.__del__(self, *args, **kwargs)
791
1511
792
def checker_callback(self, pid, condition, command,
793
*args, **kwargs):
794
self.checker_callback_tag = None
795
self.checker = None
796
# Emit D-Bus signal
797
self.PropertyChanged(dbus.String(u"CheckerRunning"),
798
dbus.Boolean(False, variant_level=1))
799
if os.WIFEXITED(condition):
800
exitstatus = os.WEXITSTATUS(condition)
1512
def checker_callback(self, source, condition,
1513
connection, command, *args, **kwargs):
1514
ret = Client.checker_callback(self, source, condition,
1515
connection, command, *args,
1516
**kwargs)
1517
exitstatus = self.last_checker_status
1518
if exitstatus >= 0:
801
1519
# Emit D-Bus signal
802
1520
self.CheckerCompleted(dbus.Int16(exitstatus),
803
dbus.Int64(condition),
1521
# This is specific to GNU libC
1522
dbus.Int64(exitstatus << 8),
804
1523
dbus.String(command))
805
1524
else:
806
1525
# Emit D-Bus signal
807
1526
self.CheckerCompleted(dbus.Int16(-1),
808
dbus.Int64(condition),
1527
dbus.Int64(
1528
# This is specific to GNU libC
1529
(exitstatus << 8)
1530
| self.last_checker_signal),
809
1531
dbus.String(command))
810
811
return Client.checker_callback(self, pid, condition, command,
812
*args, **kwargs)
813
814
def checked_ok(self, *args, **kwargs):
815
r = Client.checked_ok(self, *args, **kwargs)
816
# Emit D-Bus signal
817
self.PropertyChanged(
818
dbus.String(u"LastCheckedOK"),
819
(self._datetime_to_dbus(self.last_checked_ok,
820
variant_level=1)))
821
return r
822
823
def need_approval(self, *args, **kwargs):
824
r = Client.need_approval(self, *args, **kwargs)
825
# Emit D-Bus signal
826
self.PropertyChanged(
827
dbus.String(u"LastApprovalRequest"),
828
(self._datetime_to_dbus(self.last_approval_request,
829
variant_level=1)))
830
return r
1532
return ret
831
1533
832
1534
def start_checker(self, *args, **kwargs):
833
old_checker = self.checker
834
if self.checker is not None:
835
old_checker_pid = self.checker.pid
836
else:
837
old_checker_pid = None
1535
old_checker_pid = getattr(self.checker, "pid", None)
838
1536
r = Client.start_checker(self, *args, **kwargs)
839
1537
# Only if new checker process was started
840
1538
if (self.checker is not None
841
1539
and old_checker_pid != self.checker.pid):
842
1540
# Emit D-Bus signal
843
1541
self.CheckerStarted(self.current_checker_command)
844
self.PropertyChanged(
845
dbus.String(u"CheckerRunning"),
846
dbus.Boolean(True, variant_level=1))
847
1542
return r
848
1543
849
def stop_checker(self, *args, **kwargs):
850
old_checker = getattr(self, u"checker", None)
851
r = Client.stop_checker(self, *args, **kwargs)
852
if (old_checker is not None
853
and getattr(self, u"checker", None) is None):
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
855
dbus.Boolean(False, variant_level=1))
856
return r
857
858
1544
def _reset_approved(self):
859
self._approved = None
1545
self.approved = None
860
1546
return False
861
1547
862
1548
def approve(self, value=True):
1549
self.approved = value
1550
gobject.timeout_add(int(self.approval_duration.total_seconds()
1551
* 1000), self._reset_approved)
863
1552
self.send_changedstate()
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
866
(self.approval_duration),
867
self._reset_approved)
868
869
1553
870
1554
## D-Bus methods, signals & properties
871
_interface = u"se.bsnet.fukt.Mandos.Client"
1555
1556
## Interfaces
872
1557
873
1558
## Signals
874
1559
875
1560
# CheckerCompleted - signal
876
@dbus.service.signal(_interface, signature=u"nxs")
1561
@dbus.service.signal(_interface, signature="nxs")
877
1562
def CheckerCompleted(self, exitcode, waitstatus, command):
878
1563
"D-Bus signal"
879
1564
pass
880
1565
881
1566
# CheckerStarted - signal
882
@dbus.service.signal(_interface, signature=u"s")
1567
@dbus.service.signal(_interface, signature="s")
883
1568
def CheckerStarted(self, command):
884
1569
"D-Bus signal"
885
1570
pass
886
1571
887
1572
# PropertyChanged - signal
888
@dbus.service.signal(_interface, signature=u"sv")
1573
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1574
@dbus.service.signal(_interface, signature="sv")
889
1575
def PropertyChanged(self, property, value):
890
1576
"D-Bus signal"
891
1577
pass
900
1586
pass
901
1587
902
1588
# Rejected - signal
903
@dbus.service.signal(_interface, signature=u"s")
1589
@dbus.service.signal(_interface, signature="s")
904
1590
def Rejected(self, reason):
905
1591
"D-Bus signal"
906
1592
pass
907
1593
908
1594
# NeedApproval - signal
909
@dbus.service.signal(_interface, signature=u"tb")
1595
@dbus.service.signal(_interface, signature="tb")
910
1596
def NeedApproval(self, timeout, default):
911
1597
"D-Bus signal"
912
1598
return self.need_approval()
914
1600
## Methods
915
1601
916
1602
# Approve - method
917
@dbus.service.method(_interface, in_signature=u"b")
1603
@dbus.service.method(_interface, in_signature="b")
918
1604
def Approve(self, value):
919
1605
self.approve(value)
920
1606
921
1607
# CheckedOK - method
922
1608
@dbus.service.method(_interface)
923
1609
def CheckedOK(self):
924
return self.checked_ok()
1610
self.checked_ok()
925
1611
926
1612
# Enable - method
1613
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
927
1614
@dbus.service.method(_interface)
928
1615
def Enable(self):
929
1616
"D-Bus method"
930
1617
self.enable()
931
1618
932
1619
# StartChecker - method
1620
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
933
1621
@dbus.service.method(_interface)
934
1622
def StartChecker(self):
935
1623
"D-Bus method"
936
1624
self.start_checker()
937
1625
938
1626
# Disable - method
1627
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
939
1628
@dbus.service.method(_interface)
940
1629
def Disable(self):
941
1630
"D-Bus method"
942
1631
self.disable()
943
1632
944
1633
# StopChecker - method
1634
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
945
1635
@dbus.service.method(_interface)
946
1636
def StopChecker(self):
947
1637
self.stop_checker()
949
1639
## Properties
950
1640
951
1641
# ApprovalPending - property
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
1642
@dbus_service_property(_interface, signature="b", access="read")
953
1643
def ApprovalPending_dbus_property(self):
954
1644
return dbus.Boolean(bool(self.approvals_pending))
955
1645
956
1646
# ApprovedByDefault - property
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
1647
@dbus_service_property(_interface,
1648
signature="b",
1649
access="readwrite")
959
1650
def ApprovedByDefault_dbus_property(self, value=None):
960
1651
if value is None: # get
961
1652
return dbus.Boolean(self.approved_by_default)
962
1653
self.approved_by_default = bool(value)
963
# Emit D-Bus signal
964
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
dbus.Boolean(value, variant_level=1))
966
1654
967
1655
# ApprovalDelay - property
968
@dbus_service_property(_interface, signature=u"t",
969
access=u"readwrite")
1656
@dbus_service_property(_interface,
1657
signature="t",
1658
access="readwrite")
970
1659
def ApprovalDelay_dbus_property(self, value=None):
971
1660
if value is None: # get
972
return dbus.UInt64(self.approval_delay_milliseconds())
1661
return dbus.UInt64(self.approval_delay.total_seconds()
1662
* 1000)
973
1663
self.approval_delay = datetime.timedelta(0, 0, 0, value)
974
# Emit D-Bus signal
975
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
dbus.UInt64(value, variant_level=1))
977
1664
978
1665
# ApprovalDuration - property
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
1666
@dbus_service_property(_interface,
1667
signature="t",
1668
access="readwrite")
981
1669
def ApprovalDuration_dbus_property(self, value=None):
982
1670
if value is None: # get
983
return dbus.UInt64(self._timedelta_to_milliseconds(
984
self.approval_duration))
1671
return dbus.UInt64(self.approval_duration.total_seconds()
1672
* 1000)
985
1673
self.approval_duration = datetime.timedelta(0, 0, 0, value)
986
# Emit D-Bus signal
987
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
dbus.UInt64(value, variant_level=1))
989
1674
990
1675
# Name - property
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
1676
@dbus_annotations(
1677
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1678
@dbus_service_property(_interface, signature="s", access="read")
992
1679
def Name_dbus_property(self):
993
1680
return dbus.String(self.name)
994
1681
995
1682
# Fingerprint - property
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
1683
@dbus_annotations(
1684
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1685
@dbus_service_property(_interface, signature="s", access="read")
997
1686
def Fingerprint_dbus_property(self):
998
1687
return dbus.String(self.fingerprint)
999
1688
1000
1689
# Host - property
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
1690
@dbus_service_property(_interface,
1691
signature="s",
1692
access="readwrite")
1003
1693
def Host_dbus_property(self, value=None):
1004
1694
if value is None: # get
1005
1695
return dbus.String(self.host)
1006
self.host = value
1007
# Emit D-Bus signal
1008
self.PropertyChanged(dbus.String(u"Host"),
1009
dbus.String(value, variant_level=1))
1696
self.host = str(value)
1010
1697
1011
1698
# Created - property
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
1699
@dbus_annotations(
1700
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1701
@dbus_service_property(_interface, signature="s", access="read")
1013
1702
def Created_dbus_property(self):
1014
return dbus.String(self._datetime_to_dbus(self.created))
1703
return datetime_to_dbus(self.created)
1015
1704
1016
1705
# LastEnabled - property
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
1706
@dbus_service_property(_interface, signature="s", access="read")
1018
1707
def LastEnabled_dbus_property(self):
1019
if self.last_enabled is None:
1020
return dbus.String(u"")
1021
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1708
return datetime_to_dbus(self.last_enabled)
1022
1709
1023
1710
# Enabled - property
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
1711
@dbus_service_property(_interface,
1712
signature="b",
1713
access="readwrite")
1026
1714
def Enabled_dbus_property(self, value=None):
1027
1715
if value is None: # get
1028
1716
return dbus.Boolean(self.enabled)
1032
1720
self.disable()
1033
1721
1034
1722
# LastCheckedOK - property
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
1723
@dbus_service_property(_interface,
1724
signature="s",
1725
access="readwrite")
1037
1726
def LastCheckedOK_dbus_property(self, value=None):
1038
1727
if value is not None:
1039
1728
self.checked_ok()
1040
1729
return
1041
if self.last_checked_ok is None:
1042
return dbus.String(u"")
1043
return dbus.String(self._datetime_to_dbus(self
1044
.last_checked_ok))
1730
return datetime_to_dbus(self.last_checked_ok)
1731
1732
# LastCheckerStatus - property
1733
@dbus_service_property(_interface, signature="n", access="read")
1734
def LastCheckerStatus_dbus_property(self):
1735
return dbus.Int16(self.last_checker_status)
1736
1737
# Expires - property
1738
@dbus_service_property(_interface, signature="s", access="read")
1739
def Expires_dbus_property(self):
1740
return datetime_to_dbus(self.expires)
1045
1741
1046
1742
# LastApprovalRequest - property
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
1743
@dbus_service_property(_interface, signature="s", access="read")
1048
1744
def LastApprovalRequest_dbus_property(self):
1049
if self.last_approval_request is None:
1050
return dbus.String(u"")
1051
return dbus.String(self.
1052
_datetime_to_dbus(self
1053
.last_approval_request))
1745
return datetime_to_dbus(self.last_approval_request)
1054
1746
1055
1747
# Timeout - property
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
1748
@dbus_service_property(_interface,
1749
signature="t",
1750
access="readwrite")
1058
1751
def Timeout_dbus_property(self, value=None):
1059
1752
if value is None: # get
1060
return dbus.UInt64(self.timeout_milliseconds())
1753
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1754
old_timeout = self.timeout
1061
1755
self.timeout = datetime.timedelta(0, 0, 0, value)
1062
# Emit D-Bus signal
1063
self.PropertyChanged(dbus.String(u"Timeout"),
1064
dbus.UInt64(value, variant_level=1))
1065
if getattr(self, u"disable_initiator_tag", None) is None:
1066
return
1067
# Reschedule timeout
1068
gobject.source_remove(self.disable_initiator_tag)
1069
self.disable_initiator_tag = None
1070
time_to_die = (self.
1071
_timedelta_to_milliseconds((self
1072
.last_checked_ok
1073
+ self.timeout)
1074
- datetime.datetime
1075
.utcnow()))
1076
if time_to_die <= 0:
1077
# The timeout has passed
1078
self.disable()
1079
else:
1080
self.disable_initiator_tag = (gobject.timeout_add
1081
(time_to_die, self.disable))
1756
# Reschedule disabling
1757
if self.enabled:
1758
now = datetime.datetime.utcnow()
1759
self.expires += self.timeout - old_timeout
1760
if self.expires <= now:
1761
# The timeout has passed
1762
self.disable()
1763
else:
1764
if (getattr(self, "disable_initiator_tag", None)
1765
is None):
1766
return
1767
gobject.source_remove(self.disable_initiator_tag)
1768
self.disable_initiator_tag = gobject.timeout_add(
1769
int((self.expires - now).total_seconds() * 1000),
1770
self.disable)
1771
1772
# ExtendedTimeout - property
1773
@dbus_service_property(_interface,
1774
signature="t",
1775
access="readwrite")
1776
def ExtendedTimeout_dbus_property(self, value=None):
1777
if value is None: # get
1778
return dbus.UInt64(self.extended_timeout.total_seconds()
1779
* 1000)
1780
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1082
1781
1083
1782
# Interval - property
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
1783
@dbus_service_property(_interface,
1784
signature="t",
1785
access="readwrite")
1086
1786
def Interval_dbus_property(self, value=None):
1087
1787
if value is None: # get
1088
return dbus.UInt64(self.interval_milliseconds())
1788
return dbus.UInt64(self.interval.total_seconds() * 1000)
1089
1789
self.interval = datetime.timedelta(0, 0, 0, value)
1090
# Emit D-Bus signal
1091
self.PropertyChanged(dbus.String(u"Interval"),
1092
dbus.UInt64(value, variant_level=1))
1093
if getattr(self, u"checker_initiator_tag", None) is None:
1790
if getattr(self, "checker_initiator_tag", None) is None:
1094
1791
return
1095
# Reschedule checker run
1096
gobject.source_remove(self.checker_initiator_tag)
1097
self.checker_initiator_tag = (gobject.timeout_add
1098
(value, self.start_checker))
1099
self.start_checker() # Start one now, too
1100
1792
if self.enabled:
1793
# Reschedule checker run
1794
gobject.source_remove(self.checker_initiator_tag)
1795
self.checker_initiator_tag = gobject.timeout_add(
1796
value, self.start_checker)
1797
self.start_checker() # Start one now, too
1798
1101
1799
# Checker - property
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
1800
@dbus_service_property(_interface,
1801
signature="s",
1802
access="readwrite")
1104
1803
def Checker_dbus_property(self, value=None):
1105
1804
if value is None: # get
1106
1805
return dbus.String(self.checker_command)
1107
self.checker_command = value
1108
# Emit D-Bus signal
1109
self.PropertyChanged(dbus.String(u"Checker"),
1110
dbus.String(self.checker_command,
1111
variant_level=1))
1806
self.checker_command = str(value)
1112
1807
1113
1808
# CheckerRunning - property
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
1809
@dbus_service_property(_interface,
1810
signature="b",
1811
access="readwrite")
1116
1812
def CheckerRunning_dbus_property(self, value=None):
1117
1813
if value is None: # get
1118
1814
return dbus.Boolean(self.checker is not None)
1122
1818
self.stop_checker()
1123
1819
1124
1820
# ObjectPath - property
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
1821
@dbus_annotations(
1822
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
1823
"org.freedesktop.DBus.Deprecated": "true"})
1824
@dbus_service_property(_interface, signature="o", access="read")
1126
1825
def ObjectPath_dbus_property(self):
1127
1826
return self.dbus_object_path # is already a dbus.ObjectPath
1128
1827
1129
1828
# Secret = property
1130
@dbus_service_property(_interface, signature=u"ay",
1131
access=u"write", byte_arrays=True)
1829
@dbus_annotations(
1830
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
1831
"invalidates"})
1832
@dbus_service_property(_interface,
1833
signature="ay",
1834
access="write",
1835
byte_arrays=True)
1132
1836
def Secret_dbus_property(self, value):
1133
self.secret = str(value)
1837
self.secret = bytes(value)
1134
1838
1135
1839
del _interface
1136
1840
1140
1844
self._pipe = child_pipe
1141
1845
self._pipe.send(('init', fpr, address))
1142
1846
if not self._pipe.recv():
1143
raise KeyError()
1144
1847
raise KeyError(fpr)
1848
1145
1849
def __getattribute__(self, name):
1146
if(name == '_pipe'):
1850
if name == '_pipe':
1147
1851
return super(ProxyClient, self).__getattribute__(name)
1148
1852
self._pipe.send(('getattr', name))
1149
1853
data = self._pipe.recv()
1150
1854
if data[0] == 'data':
1151
1855
return data[1]
1152
1856
if data[0] == 'function':
1857
1153
1858
def func(*args, **kwargs):
1154
1859
self._pipe.send(('funcall', name, args, kwargs))
1155
1860
return self._pipe.recv()[1]
1861
1156
1862
return func
1157
1863
1158
1864
def __setattr__(self, name, value):
1159
if(name == '_pipe'):
1865
if name == '_pipe':
1160
1866
return super(ProxyClient, self).__setattr__(name, value)
1161
1867
self._pipe.send(('setattr', name, value))
1162
1868
1169
1875
1170
1876
def handle(self):
1171
1877
with contextlib.closing(self.server.child_pipe) as child_pipe:
1172
logger.info(u"TCP connection from: %s",
1173
unicode(self.client_address))
1174
logger.debug(u"Pipe FD: %d",
1878
logger.info("TCP connection from: %s",
1879
str(self.client_address))
1880
logger.debug("Pipe FD: %d",
1175
1881
self.server.child_pipe.fileno())
1176
1177
session = (gnutls.connection
1178
.ClientSession(self.request,
1179
gnutls.connection
1180
.X509Credentials()))
1181
1882
1883
session = gnutls.connection.ClientSession(
1884
self.request, gnutls.connection .X509Credentials())
1885
1182
1886
# Note: gnutls.connection.X509Credentials is really a
1183
1887
# generic GnuTLS certificate credentials object so long as
1184
1888
# no X.509 keys are added to it. Therefore, we can use it
1185
1889
# here despite using OpenPGP certificates.
1186
1187
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1188
# u"+AES-256-CBC", u"+SHA1",
1189
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1190
# u"+DHE-DSS"))
1890
1891
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1892
# "+AES-256-CBC", "+SHA1",
1893
# "+COMP-NULL", "+CTYPE-OPENPGP",
1894
# "+DHE-DSS"))
1191
1895
# Use a fallback default, since this MUST be set.
1192
1896
priority = self.server.gnutls_priority
1193
1897
if priority is None:
1194
priority = u"NORMAL"
1195
(gnutls.library.functions
1196
.gnutls_priority_set_direct(session._c_object,
1197
priority, None))
1198
1898
priority = "NORMAL"
1899
gnutls.library.functions.gnutls_priority_set_direct(
1900
session._c_object, priority, None)
1901
1199
1902
# Start communication using the Mandos protocol
1200
1903
# Get protocol number
1201
1904
line = self.request.makefile().readline()
1202
logger.debug(u"Protocol version: %r", line)
1905
logger.debug("Protocol version: %r", line)
1203
1906
try:
1204
1907
if int(line.strip().split()[0]) > 1:
1205
raise RuntimeError
1206
except (ValueError, IndexError, RuntimeError), error:
1207
logger.error(u"Unknown protocol version: %s", error)
1908
raise RuntimeError(line)
1909
except (ValueError, IndexError, RuntimeError) as error:
1910
logger.error("Unknown protocol version: %s", error)
1208
1911
return
1209
1912
1210
1913
# Start GnuTLS connection
1211
1914
try:
1212
1915
session.handshake()
1213
except gnutls.errors.GNUTLSError, error:
1214
logger.warning(u"Handshake failed: %s", error)
1916
except gnutls.errors.GNUTLSError as error:
1917
logger.warning("Handshake failed: %s", error)
1215
1918
# Do not run session.bye() here: the session is not
1216
1919
# established. Just abandon the request.
1217
1920
return
1218
logger.debug(u"Handshake succeeded")
1219
1921
logger.debug("Handshake succeeded")
1922
1220
1923
approval_required = False
1221
1924
try:
1222
1925
try:
1223
fpr = self.fingerprint(self.peer_certificate
1224
(session))
1225
except (TypeError, gnutls.errors.GNUTLSError), error:
1226
logger.warning(u"Bad certificate: %s", error)
1926
fpr = self.fingerprint(
1927
self.peer_certificate(session))
1928
except (TypeError,
1929
gnutls.errors.GNUTLSError) as error:
1930
logger.warning("Bad certificate: %s", error)
1227
1931
return
1228
logger.debug(u"Fingerprint: %s", fpr)
1229
1932
logger.debug("Fingerprint: %s", fpr)
1933
1230
1934
try:
1231
1935
client = ProxyClient(child_pipe, fpr,
1232
1936
self.client_address)
1240
1944
1241
1945
while True:
1242
1946
if not client.enabled:
1243
logger.warning(u"Client %s is disabled",
1244
client.name)
1947
logger.info("Client %s is disabled",
1948
client.name)
1245
1949
if self.server.use_dbus:
1246
1950
# Emit D-Bus signal
1247
client.Rejected("Disabled")
1951
client.Rejected("Disabled")
1248
1952
return
1249
1953
1250
if client._approved or not client.approval_delay:
1954
if client.approved or not client.approval_delay:
1251
1955
#We are approved or approval is disabled
1252
1956
break
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
1957
elif client.approved is None:
1958
logger.info("Client %s needs approval",
1255
1959
client.name)
1256
1960
if self.server.use_dbus:
1257
1961
# Emit D-Bus signal
1258
1962
client.NeedApproval(
1259
client.approval_delay_milliseconds(),
1260
client.approved_by_default)
1963
client.approval_delay.total_seconds()
1964
* 1000, client.approved_by_default)
1261
1965
else:
1262
logger.warning(u"Client %s was not approved",
1966
logger.warning("Client %s was not approved",
1263
1967
client.name)
1264
1968
if self.server.use_dbus:
1265
1969
# Emit D-Bus signal
1267
1971
return
1268
1972
1269
1973
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
1271
1974
time = datetime.datetime.now()
1272
1975
client.changedstate.acquire()
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1976
client.changedstate.wait(delay.total_seconds())
1274
1977
client.changedstate.release()
1275
1978
time2 = datetime.datetime.now()
1276
1979
if (time2 - time) >= delay:
1291
1994
while sent_size < len(client.secret):
1292
1995
try:
1293
1996
sent = session.send(client.secret[sent_size:])
1294
except (gnutls.errors.GNUTLSError), error:
1295
logger.warning("gnutls send failed")
1997
except gnutls.errors.GNUTLSError as error:
1998
logger.warning("gnutls send failed",
1999
exc_info=error)
1296
2000
return
1297
logger.debug(u"Sent: %d, remaining: %d",
1298
sent, len(client.secret)
1299
- (sent_size + sent))
2001
logger.debug("Sent: %d, remaining: %d", sent,
2002
len(client.secret) - (sent_size
2003
+ sent))
1300
2004
sent_size += sent
1301
1302
logger.info(u"Sending secret to %s", client.name)
1303
# bump the timeout as if seen
1304
client.checked_ok()
2005
2006
logger.info("Sending secret to %s", client.name)
2007
# bump the timeout using extended_timeout
2008
client.bump_timeout(client.extended_timeout)
1305
2009
if self.server.use_dbus:
1306
2010
# Emit D-Bus signal
1307
2011
client.GotSecret()
1311
2015
client.approvals_pending -= 1
1312
2016
try:
1313
2017
session.bye()
1314
except (gnutls.errors.GNUTLSError), error:
1315
logger.warning("GnuTLS bye failed")
2018
except gnutls.errors.GNUTLSError as error:
2019
logger.warning("GnuTLS bye failed",
2020
exc_info=error)
1316
2021
1317
2022
@staticmethod
1318
2023
def peer_certificate(session):
1319
2024
"Return the peer's OpenPGP certificate as a bytestring"
1320
2025
# If not an OpenPGP certificate...
1321
if (gnutls.library.functions
1322
.gnutls_certificate_type_get(session._c_object)
2026
if (gnutls.library.functions.gnutls_certificate_type_get(
2027
session._c_object)
1323
2028
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1324
2029
# ...do the normal thing
1325
2030
return session.peer_certificate
1328
2033
.gnutls_certificate_get_peers
1329
2034
(session._c_object, ctypes.byref(list_size)))
1330
2035
if not bool(cert_list) and list_size.value != 0:
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
2036
raise gnutls.errors.GNUTLSError("error getting peer"
2037
" certificate")
1333
2038
if list_size.value == 0:
1334
2039
return None
1335
2040
cert = cert_list[0]
1339
2044
def fingerprint(openpgp):
1340
2045
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1341
2046
# New GnuTLS "datum" with the OpenPGP public key
1342
datum = (gnutls.library.types
1343
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1344
ctypes.POINTER
1345
(ctypes.c_ubyte)),
1346
ctypes.c_uint(len(openpgp))))
2047
datum = gnutls.library.types.gnutls_datum_t(
2048
ctypes.cast(ctypes.c_char_p(openpgp),
2049
ctypes.POINTER(ctypes.c_ubyte)),
2050
ctypes.c_uint(len(openpgp)))
1347
2051
# New empty GnuTLS certificate
1348
2052
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1349
(gnutls.library.functions
1350
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2053
gnutls.library.functions.gnutls_openpgp_crt_init(
2054
ctypes.byref(crt))
1351
2055
# Import the OpenPGP public key into the certificate
1352
(gnutls.library.functions
1353
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1354
gnutls.library.constants
1355
.GNUTLS_OPENPGP_FMT_RAW))
2056
gnutls.library.functions.gnutls_openpgp_crt_import(
2057
crt, ctypes.byref(datum),
2058
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1356
2059
# Verify the self signature in the key
1357
2060
crtverify = ctypes.c_uint()
1358
(gnutls.library.functions
1359
.gnutls_openpgp_crt_verify_self(crt, 0,
1360
ctypes.byref(crtverify)))
2061
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
2062
crt, 0, ctypes.byref(crtverify))
1361
2063
if crtverify.value != 0:
1362
2064
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1363
raise (gnutls.errors.CertificateSecurityError
1364
(u"Verify failed"))
2065
raise gnutls.errors.CertificateSecurityError(
2066
"Verify failed")
1365
2067
# New buffer for the fingerprint
1366
2068
buf = ctypes.create_string_buffer(20)
1367
2069
buf_len = ctypes.c_size_t()
1368
2070
# Get the fingerprint from the certificate into the buffer
1369
(gnutls.library.functions
1370
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1371
ctypes.byref(buf_len)))
2071
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
2072
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1372
2073
# Deinit the certificate
1373
2074
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1374
2075
# Convert the buffer to a Python bytestring
1375
2076
fpr = ctypes.string_at(buf, buf_len.value)
1376
2077
# Convert the bytestring to hexadecimal notation
1377
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2078
hex_fpr = binascii.hexlify(fpr).upper()
1378
2079
return hex_fpr
1379
2080
1380
2081
1381
2082
class MultiprocessingMixIn(object):
1382
2083
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2084
1383
2085
def sub_process_main(self, request, address):
1384
2086
try:
1385
2087
self.finish_request(request, address)
1386
except:
2088
except Exception:
1387
2089
self.handle_error(request, address)
1388
2090
self.close_request(request)
1389
2091
1390
2092
def process_request(self, request, address):
1391
2093
"""Start a new process to process the request."""
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
2094
proc = multiprocessing.Process(target = self.sub_process_main,
2095
args = (request, address))
2096
proc.start()
2097
return proc
2098
1394
2099
1395
2100
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1396
2101
""" adds a pipe to the MixIn """
2102
1397
2103
def process_request(self, request, client_address):
1398
2104
"""Overrides and wraps the original process_request().
1399
2105
1400
2106
This function creates a new pipe in self.pipe
1401
2107
"""
1402
2108
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1403
1404
super(MultiprocessingMixInWithPipe,
1405
self).process_request(request, client_address)
2109
2110
proc = MultiprocessingMixIn.process_request(self, request,
2111
client_address)
1406
2112
self.child_pipe.close()
1407
self.add_pipe(parent_pipe)
1408
1409
def add_pipe(self, parent_pipe):
2113
self.add_pipe(parent_pipe, proc)
2114
2115
def add_pipe(self, parent_pipe, proc):
1410
2116
"""Dummy function; override as necessary"""
1411
pass
2117
raise NotImplementedError()
2118
1412
2119
1413
2120
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1414
2121
socketserver.TCPServer, object):
1419
2126
interface: None or a network interface name (string)
1420
2127
use_ipv6: Boolean; to use IPv6 or not
1421
2128
"""
2129
1422
2130
def __init__(self, server_address, RequestHandlerClass,
1423
interface=None, use_ipv6=True):
2131
interface=None,
2132
use_ipv6=True,
2133
socketfd=None):
2134
"""If socketfd is set, use that file descriptor instead of
2135
creating a new one with socket.socket().
2136
"""
1424
2137
self.interface = interface
1425
2138
if use_ipv6:
1426
2139
self.address_family = socket.AF_INET6
2140
if socketfd is not None:
2141
# Save the file descriptor
2142
self.socketfd = socketfd
2143
# Save the original socket.socket() function
2144
self.socket_socket = socket.socket
2145
# To implement --socket, we monkey patch socket.socket.
2146
#
2147
# (When socketserver.TCPServer is a new-style class, we
2148
# could make self.socket into a property instead of monkey
2149
# patching socket.socket.)
2150
#
2151
# Create a one-time-only replacement for socket.socket()
2152
@functools.wraps(socket.socket)
2153
def socket_wrapper(*args, **kwargs):
2154
# Restore original function so subsequent calls are
2155
# not affected.
2156
socket.socket = self.socket_socket
2157
del self.socket_socket
2158
# This time only, return a new socket object from the
2159
# saved file descriptor.
2160
return socket.fromfd(self.socketfd, *args, **kwargs)
2161
# Replace socket.socket() function with wrapper
2162
socket.socket = socket_wrapper
2163
# The socketserver.TCPServer.__init__ will call
2164
# socket.socket(), which might be our replacement,
2165
# socket_wrapper(), if socketfd was set.
1427
2166
socketserver.TCPServer.__init__(self, server_address,
1428
2167
RequestHandlerClass)
2168
1429
2169
def server_bind(self):
1430
2170
"""This overrides the normal server_bind() function
1431
2171
to bind to an interface if one was specified, and also NOT to
1432
2172
bind to an address or port if they were not specified."""
1433
2173
if self.interface is not None:
1434
2174
if SO_BINDTODEVICE is None:
1435
logger.error(u"SO_BINDTODEVICE does not exist;"
1436
u" cannot bind to interface %s",
2175
logger.error("SO_BINDTODEVICE does not exist;"
2176
" cannot bind to interface %s",
1437
2177
self.interface)
1438
2178
else:
1439
2179
try:
1440
self.socket.setsockopt(socket.SOL_SOCKET,
1441
SO_BINDTODEVICE,
1442
str(self.interface
1443
+ u'\0'))
1444
except socket.error, error:
1445
if error[0] == errno.EPERM:
1446
logger.error(u"No permission to"
1447
u" bind to interface %s",
1448
self.interface)
1449
elif error[0] == errno.ENOPROTOOPT:
1450
logger.error(u"SO_BINDTODEVICE not available;"
1451
u" cannot bind to interface %s",
1452
self.interface)
2180
self.socket.setsockopt(
2181
socket.SOL_SOCKET, SO_BINDTODEVICE,
2182
(self.interface + "\0").encode("utf-8"))
2183
except socket.error as error:
2184
if error.errno == errno.EPERM:
2185
logger.error("No permission to bind to"
2186
" interface %s", self.interface)
2187
elif error.errno == errno.ENOPROTOOPT:
2188
logger.error("SO_BINDTODEVICE not available;"
2189
" cannot bind to interface %s",
2190
self.interface)
2191
elif error.errno == errno.ENODEV:
2192
logger.error("Interface %s does not exist,"
2193
" cannot bind", self.interface)
1453
2194
else:
1454
2195
raise
1455
2196
# Only bind(2) the socket if we really need to.
1456
2197
if self.server_address[0] or self.server_address[1]:
1457
2198
if not self.server_address[0]:
1458
2199
if self.address_family == socket.AF_INET6:
1459
any_address = u"::" # in6addr_any
2200
any_address = "::" # in6addr_any
1460
2201
else:
1461
any_address = socket.INADDR_ANY
2202
any_address = "0.0.0.0" # INADDR_ANY
1462
2203
self.server_address = (any_address,
1463
2204
self.server_address[1])
1464
2205
elif not self.server_address[1]:
1465
self.server_address = (self.server_address[0],
1466
0)
2206
self.server_address = (self.server_address[0], 0)
1467
2207
# if self.interface:
1468
2208
# self.server_address = (self.server_address[0],
1469
2209
# 0, # port
1483
2223
1484
2224
Assumes a gobject.MainLoop event loop.
1485
2225
"""
2226
1486
2227
def __init__(self, server_address, RequestHandlerClass,
1487
interface=None, use_ipv6=True, clients=None,
1488
gnutls_priority=None, use_dbus=True):
2228
interface=None,
2229
use_ipv6=True,
2230
clients=None,
2231
gnutls_priority=None,
2232
use_dbus=True,
2233
socketfd=None):
1489
2234
self.enabled = False
1490
2235
self.clients = clients
1491
2236
if self.clients is None:
1492
self.clients = set()
2237
self.clients = {}
1493
2238
self.use_dbus = use_dbus
1494
2239
self.gnutls_priority = gnutls_priority
1495
2240
IPv6_TCPServer.__init__(self, server_address,
1496
2241
RequestHandlerClass,
1497
2242
interface = interface,
1498
use_ipv6 = use_ipv6)
2243
use_ipv6 = use_ipv6,
2244
socketfd = socketfd)
2245
1499
2246
def server_activate(self):
1500
2247
if self.enabled:
1501
2248
return socketserver.TCPServer.server_activate(self)
2249
1502
2250
def enable(self):
1503
2251
self.enabled = True
1504
def add_pipe(self, parent_pipe):
2252
2253
def add_pipe(self, parent_pipe, proc):
1505
2254
# Call "handle_ipc" for both data and EOF events
1506
gobject.io_add_watch(parent_pipe.fileno(),
1507
gobject.IO_IN | gobject.IO_HUP,
1508
functools.partial(self.handle_ipc,
1509
parent_pipe = parent_pipe))
1510
1511
def handle_ipc(self, source, condition, parent_pipe=None,
2255
gobject.io_add_watch(
2256
parent_pipe.fileno(),
2257
gobject.IO_IN | gobject.IO_HUP,
2258
functools.partial(self.handle_ipc,
2259
parent_pipe = parent_pipe,
2260
proc = proc))
2261
2262
def handle_ipc(self, source, condition,
2263
parent_pipe=None,
2264
proc = None,
1512
2265
client_object=None):
1513
condition_names = {
1514
gobject.IO_IN: u"IN", # There is data to read.
1515
gobject.IO_OUT: u"OUT", # Data can be written (without
1516
# blocking).
1517
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1518
gobject.IO_ERR: u"ERR", # Error condition.
1519
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1520
# broken, usually for pipes and
1521
# sockets).
1522
}
1523
conditions_string = ' | '.join(name
1524
for cond, name in
1525
condition_names.iteritems()
1526
if cond & condition)
1527
# error or the other end of multiprocessing.Pipe has closed
1528
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2266
# error, or the other end of multiprocessing.Pipe has closed
2267
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2268
# Wait for other process to exit
2269
proc.join()
1529
2270
return False
1530
2271
1531
2272
# Read a request from the child
1536
2277
fpr = request[1]
1537
2278
address = request[2]
1538
2279
1539
for c in self.clients:
2280
for c in self.clients.itervalues():
1540
2281
if c.fingerprint == fpr:
1541
2282
client = c
1542
2283
break
1543
2284
else:
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
2285
logger.info("Client not found for fingerprint: %s, ad"
2286
"dress: %s", fpr, address)
1546
2287
if self.use_dbus:
1547
2288
# Emit D-Bus signal
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
2289
mandos_dbus_service.ClientNotFound(fpr,
2290
address[0])
1549
2291
parent_pipe.send(False)
1550
2292
return False
1551
2293
1552
gobject.io_add_watch(parent_pipe.fileno(),
1553
gobject.IO_IN | gobject.IO_HUP,
1554
functools.partial(self.handle_ipc,
1555
parent_pipe = parent_pipe,
1556
client_object = client))
2294
gobject.io_add_watch(
2295
parent_pipe.fileno(),
2296
gobject.IO_IN | gobject.IO_HUP,
2297
functools.partial(self.handle_ipc,
2298
parent_pipe = parent_pipe,
2299
proc = proc,
2300
client_object = client))
1557
2301
parent_pipe.send(True)
1558
# remove the old hook in favor of the new above hook on same fileno
2302
# remove the old hook in favor of the new above hook on
2303
# same fileno
1559
2304
return False
1560
2305
if command == 'funcall':
1561
2306
funcname = request[1]
1562
2307
args = request[2]
1563
2308
kwargs = request[3]
1564
2309
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1566
2310
parent_pipe.send(('data', getattr(client_object,
2311
funcname)(*args,
2312
**kwargs)))
2313
1567
2314
if command == 'getattr':
1568
2315
attrname = request[1]
1569
if callable(client_object.__getattribute__(attrname)):
1570
parent_pipe.send(('function',))
2316
if isinstance(client_object.__getattribute__(attrname),
2317
collections.Callable):
2318
parent_pipe.send(('function', ))
1571
2319
else:
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2320
parent_pipe.send((
2321
'data', client_object.__getattribute__(attrname)))
1573
2322
1574
2323
if command == 'setattr':
1575
2324
attrname = request[1]
1576
2325
value = request[2]
1577
2326
setattr(client_object, attrname, value)
1578
2327
1579
2328
return True
1580
2329
1581
2330
2331
def rfc3339_duration_to_delta(duration):
2332
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2333
2334
>>> rfc3339_duration_to_delta("P7D")
2335
datetime.timedelta(7)
2336
>>> rfc3339_duration_to_delta("PT60S")
2337
datetime.timedelta(0, 60)
2338
>>> rfc3339_duration_to_delta("PT60M")
2339
datetime.timedelta(0, 3600)
2340
>>> rfc3339_duration_to_delta("PT24H")
2341
datetime.timedelta(1)
2342
>>> rfc3339_duration_to_delta("P1W")
2343
datetime.timedelta(7)
2344
>>> rfc3339_duration_to_delta("PT5M30S")
2345
datetime.timedelta(0, 330)
2346
>>> rfc3339_duration_to_delta("P1DT3M20S")
2347
datetime.timedelta(1, 200)
2348
"""
2349
2350
# Parsing an RFC 3339 duration with regular expressions is not
2351
# possible - there would have to be multiple places for the same
2352
# values, like seconds. The current code, while more esoteric, is
2353
# cleaner without depending on a parsing library. If Python had a
2354
# built-in library for parsing we would use it, but we'd like to
2355
# avoid excessive use of external libraries.
2356
2357
# New type for defining tokens, syntax, and semantics all-in-one
2358
Token = collections.namedtuple("Token", (
2359
"regexp", # To match token; if "value" is not None, must have
2360
# a "group" containing digits
2361
"value", # datetime.timedelta or None
2362
"followers")) # Tokens valid after this token
2363
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2364
# the "duration" ABNF definition in RFC 3339, Appendix A.
2365
token_end = Token(re.compile(r"$"), None, frozenset())
2366
token_second = Token(re.compile(r"(\d+)S"),
2367
datetime.timedelta(seconds=1),
2368
frozenset((token_end, )))
2369
token_minute = Token(re.compile(r"(\d+)M"),
2370
datetime.timedelta(minutes=1),
2371
frozenset((token_second, token_end)))
2372
token_hour = Token(re.compile(r"(\d+)H"),
2373
datetime.timedelta(hours=1),
2374
frozenset((token_minute, token_end)))
2375
token_time = Token(re.compile(r"T"),
2376
None,
2377
frozenset((token_hour, token_minute,
2378
token_second)))
2379
token_day = Token(re.compile(r"(\d+)D"),
2380
datetime.timedelta(days=1),
2381
frozenset((token_time, token_end)))
2382
token_month = Token(re.compile(r"(\d+)M"),
2383
datetime.timedelta(weeks=4),
2384
frozenset((token_day, token_end)))
2385
token_year = Token(re.compile(r"(\d+)Y"),
2386
datetime.timedelta(weeks=52),
2387
frozenset((token_month, token_end)))
2388
token_week = Token(re.compile(r"(\d+)W"),
2389
datetime.timedelta(weeks=1),
2390
frozenset((token_end, )))
2391
token_duration = Token(re.compile(r"P"), None,
2392
frozenset((token_year, token_month,
2393
token_day, token_time,
2394
token_week)))
2395
# Define starting values
2396
value = datetime.timedelta() # Value so far
2397
found_token = None
2398
followers = frozenset((token_duration, )) # Following valid tokens
2399
s = duration # String left to parse
2400
# Loop until end token is found
2401
while found_token is not token_end:
2402
# Search for any currently valid tokens
2403
for token in followers:
2404
match = token.regexp.match(s)
2405
if match is not None:
2406
# Token found
2407
if token.value is not None:
2408
# Value found, parse digits
2409
factor = int(match.group(1), 10)
2410
# Add to value so far
2411
value += factor * token.value
2412
# Strip token from string
2413
s = token.regexp.sub("", s, 1)
2414
# Go to found token
2415
found_token = token
2416
# Set valid next tokens
2417
followers = found_token.followers
2418
break
2419
else:
2420
# No currently valid tokens were found
2421
raise ValueError("Invalid RFC 3339 duration: {!r}"
2422
.format(duration))
2423
# End token found
2424
return value
2425
2426
1582
2427
def string_to_delta(interval):
1583
2428
"""Parse a string and return a datetime.timedelta
1584
2429
1585
>>> string_to_delta(u'7d')
2430
>>> string_to_delta('7d')
1586
2431
datetime.timedelta(7)
1587
>>> string_to_delta(u'60s')
2432
>>> string_to_delta('60s')
1588
2433
datetime.timedelta(0, 60)
1589
>>> string_to_delta(u'60m')
2434
>>> string_to_delta('60m')
1590
2435
datetime.timedelta(0, 3600)
1591
>>> string_to_delta(u'24h')
2436
>>> string_to_delta('24h')
1592
2437
datetime.timedelta(1)
1593
>>> string_to_delta(u'1w')
2438
>>> string_to_delta('1w')
1594
2439
datetime.timedelta(7)
1595
>>> string_to_delta(u'5m 30s')
2440
>>> string_to_delta('5m 30s')
1596
2441
datetime.timedelta(0, 330)
1597
2442
"""
2443
2444
try:
2445
return rfc3339_duration_to_delta(interval)
2446
except ValueError:
2447
pass
2448
1598
2449
timevalue = datetime.timedelta(0)
1599
2450
for s in interval.split():
1600
2451
try:
1601
suffix = unicode(s[-1])
2452
suffix = s[-1]
1602
2453
value = int(s[:-1])
1603
if suffix == u"d":
2454
if suffix == "d":
1604
2455
delta = datetime.timedelta(value)
1605
elif suffix == u"s":
2456
elif suffix == "s":
1606
2457
delta = datetime.timedelta(0, value)
1607
elif suffix == u"m":
2458
elif suffix == "m":
1608
2459
delta = datetime.timedelta(0, 0, 0, 0, value)
1609
elif suffix == u"h":
2460
elif suffix == "h":
1610
2461
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1611
elif suffix == u"w":
2462
elif suffix == "w":
1612
2463
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1613
2464
else:
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
2465
raise ValueError("Unknown suffix {!r}".format(suffix))
2466
except IndexError as e:
2467
raise ValueError(*(e.args))
1617
2468
timevalue += delta
1618
2469
return timevalue
1619
2470
1620
2471
1621
def if_nametoindex(interface):
1622
"""Call the C function if_nametoindex(), or equivalent
1623
1624
Note: This function cannot accept a unicode string."""
1625
global if_nametoindex
1626
try:
1627
if_nametoindex = (ctypes.cdll.LoadLibrary
1628
(ctypes.util.find_library(u"c"))
1629
.if_nametoindex)
1630
except (OSError, AttributeError):
1631
logger.warning(u"Doing if_nametoindex the hard way")
1632
def if_nametoindex(interface):
1633
"Get an interface index the hard way, i.e. using fcntl()"
1634
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1635
with contextlib.closing(socket.socket()) as s:
1636
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1637
struct.pack(str(u"16s16x"),
1638
interface))
1639
interface_index = struct.unpack(str(u"I"),
1640
ifreq[16:20])[0]
1641
return interface_index
1642
return if_nametoindex(interface)
1643
1644
1645
2472
def daemon(nochdir = False, noclose = False):
1646
2473
"""See daemon(3). Standard BSD Unix function.
1647
2474
1650
2477
sys.exit()
1651
2478
os.setsid()
1652
2479
if not nochdir:
1653
os.chdir(u"/")
2480
os.chdir("/")
1654
2481
if os.fork():
1655
2482
sys.exit()
1656
2483
if not noclose:
1657
2484
# Close all standard open file descriptors
1658
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2485
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1659
2486
if not stat.S_ISCHR(os.fstat(null).st_mode):
1660
2487
raise OSError(errno.ENODEV,
1661
u"%s not a character device"
1662
% os.path.devnull)
2488
"{} not a character device"
2489
.format(os.devnull))
1663
2490
os.dup2(null, sys.stdin.fileno())
1664
2491
os.dup2(null, sys.stdout.fileno())
1665
2492
os.dup2(null, sys.stderr.fileno())
1672
2499
##################################################################
1673
2500
# Parsing of options, both command line and config file
1674
2501
1675
parser = optparse.OptionParser(version = "%%prog %s" % version)
1676
parser.add_option("-i", u"--interface", type=u"string",
1677
metavar="IF", help=u"Bind to interface IF")
1678
parser.add_option("-a", u"--address", type=u"string",
1679
help=u"Address to listen for requests on")
1680
parser.add_option("-p", u"--port", type=u"int",
1681
help=u"Port number to receive requests on")
1682
parser.add_option("--check", action=u"store_true",
1683
help=u"Run self-test")
1684
parser.add_option("--debug", action=u"store_true",
1685
help=u"Debug mode; run in foreground and log to"
1686
u" terminal")
1687
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1688
help=u"Debug level for stdout output")
1689
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1690
u" priority string (see GnuTLS documentation)")
1691
parser.add_option("--servicename", type=u"string",
1692
metavar=u"NAME", help=u"Zeroconf service name")
1693
parser.add_option("--configdir", type=u"string",
1694
default=u"/etc/mandos", metavar=u"DIR",
1695
help=u"Directory to search for configuration"
1696
u" files")
1697
parser.add_option("--no-dbus", action=u"store_false",
1698
dest=u"use_dbus", help=u"Do not provide D-Bus"
1699
u" system bus interface")
1700
parser.add_option("--no-ipv6", action=u"store_false",
1701
dest=u"use_ipv6", help=u"Do not use IPv6")
1702
options = parser.parse_args()[0]
2502
parser = argparse.ArgumentParser()
2503
parser.add_argument("-v", "--version", action="version",
2504
version = "%(prog)s {}".format(version),
2505
help="show version number and exit")
2506
parser.add_argument("-i", "--interface", metavar="IF",
2507
help="Bind to interface IF")
2508
parser.add_argument("-a", "--address",
2509
help="Address to listen for requests on")
2510
parser.add_argument("-p", "--port", type=int,
2511
help="Port number to receive requests on")
2512
parser.add_argument("--check", action="store_true",
2513
help="Run self-test")
2514
parser.add_argument("--debug", action="store_true",
2515
help="Debug mode; run in foreground and log"
2516
" to terminal", default=None)
2517
parser.add_argument("--debuglevel", metavar="LEVEL",
2518
help="Debug level for stdout output")
2519
parser.add_argument("--priority", help="GnuTLS"
2520
" priority string (see GnuTLS documentation)")
2521
parser.add_argument("--servicename",
2522
metavar="NAME", help="Zeroconf service name")
2523
parser.add_argument("--configdir",
2524
default="/etc/mandos", metavar="DIR",
2525
help="Directory to search for configuration"
2526
" files")
2527
parser.add_argument("--no-dbus", action="store_false",
2528
dest="use_dbus", help="Do not provide D-Bus"
2529
" system bus interface", default=None)
2530
parser.add_argument("--no-ipv6", action="store_false",
2531
dest="use_ipv6", help="Do not use IPv6",
2532
default=None)
2533
parser.add_argument("--no-restore", action="store_false",
2534
dest="restore", help="Do not restore stored"
2535
" state", default=None)
2536
parser.add_argument("--socket", type=int,
2537
help="Specify a file descriptor to a network"
2538
" socket to use instead of creating one")
2539
parser.add_argument("--statedir", metavar="DIR",
2540
help="Directory to save/restore state in")
2541
parser.add_argument("--foreground", action="store_true",
2542
help="Run in foreground", default=None)
2543
parser.add_argument("--no-zeroconf", action="store_false",
2544
dest="zeroconf", help="Do not use Zeroconf",
2545
default=None)
2546
2547
options = parser.parse_args()
1703
2548
1704
2549
if options.check:
1705
2550
import doctest
1706
doctest.testmod()
1707
sys.exit()
2551
fail_count, test_count = doctest.testmod()
2552
sys.exit(os.EX_OK if fail_count == 0 else 1)
1708
2553
1709
2554
# Default values for config file for server-global settings
1710
server_defaults = { u"interface": u"",
1711
u"address": u"",
1712
u"port": u"",
1713
u"debug": u"False",
1714
u"priority":
1715
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1716
u"servicename": u"Mandos",
1717
u"use_dbus": u"True",
1718
u"use_ipv6": u"True",
1719
u"debuglevel": u"",
1720
}
2555
server_defaults = { "interface": "",
2556
"address": "",
2557
"port": "",
2558
"debug": "False",
2559
"priority":
2560
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2561
":+SIGN-DSA-SHA256",
2562
"servicename": "Mandos",
2563
"use_dbus": "True",
2564
"use_ipv6": "True",
2565
"debuglevel": "",
2566
"restore": "True",
2567
"socket": "",
2568
"statedir": "/var/lib/mandos",
2569
"foreground": "False",
2570
"zeroconf": "True",
2571
}
1721
2572
1722
2573
# Parse config file for server-global settings
1723
2574
server_config = configparser.SafeConfigParser(server_defaults)
1724
2575
del server_defaults
1725
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
2576
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1727
2577
# Convert the SafeConfigParser object to a dict
1728
2578
server_settings = server_config.defaults()
1729
2579
# Use the appropriate methods on the non-string config options
1730
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1731
server_settings[option] = server_config.getboolean(u"DEFAULT",
2580
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2581
server_settings[option] = server_config.getboolean("DEFAULT",
1732
2582
option)
1733
2583
if server_settings["port"]:
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
2584
server_settings["port"] = server_config.getint("DEFAULT",
2585
"port")
2586
if server_settings["socket"]:
2587
server_settings["socket"] = server_config.getint("DEFAULT",
2588
"socket")
2589
# Later, stdin will, and stdout and stderr might, be dup'ed
2590
# over with an opened os.devnull. But we don't want this to
2591
# happen with a supplied network socket.
2592
if 0 <= server_settings["socket"] <= 2:
2593
server_settings["socket"] = os.dup(server_settings
2594
["socket"])
1736
2595
del server_config
1737
2596
1738
2597
# Override the settings from the config file with command line
1739
2598
# options, if set.
1740
for option in (u"interface", u"address", u"port", u"debug",
1741
u"priority", u"servicename", u"configdir",
1742
u"use_dbus", u"use_ipv6", u"debuglevel"):
2599
for option in ("interface", "address", "port", "debug",
2600
"priority", "servicename", "configdir", "use_dbus",
2601
"use_ipv6", "debuglevel", "restore", "statedir",
2602
"socket", "foreground", "zeroconf"):
1743
2603
value = getattr(options, option)
1744
2604
if value is not None:
1745
2605
server_settings[option] = value
1746
2606
del options
1747
2607
# Force all strings to be unicode
1748
2608
for option in server_settings.keys():
1749
if type(server_settings[option]) is str:
1750
server_settings[option] = unicode(server_settings[option])
2609
if isinstance(server_settings[option], bytes):
2610
server_settings[option] = (server_settings[option]
2611
.decode("utf-8"))
2612
# Force all boolean options to be boolean
2613
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2614
"foreground", "zeroconf"):
2615
server_settings[option] = bool(server_settings[option])
2616
# Debug implies foreground
2617
if server_settings["debug"]:
2618
server_settings["foreground"] = True
1751
2619
# Now we have our good server settings in "server_settings"
1752
2620
1753
2621
##################################################################
1754
2622
2623
if (not server_settings["zeroconf"]
2624
and not (server_settings["port"]
2625
or server_settings["socket"] != "")):
2626
parser.error("Needs port or socket to work without Zeroconf")
2627
1755
2628
# For convenience
1756
debug = server_settings[u"debug"]
1757
debuglevel = server_settings[u"debuglevel"]
1758
use_dbus = server_settings[u"use_dbus"]
1759
use_ipv6 = server_settings[u"use_ipv6"]
1760
1761
if server_settings[u"servicename"] != u"Mandos":
1762
syslogger.setFormatter(logging.Formatter
1763
(u'Mandos (%s) [%%(process)d]:'
1764
u' %%(levelname)s: %%(message)s'
1765
% server_settings[u"servicename"]))
2629
debug = server_settings["debug"]
2630
debuglevel = server_settings["debuglevel"]
2631
use_dbus = server_settings["use_dbus"]
2632
use_ipv6 = server_settings["use_ipv6"]
2633
stored_state_path = os.path.join(server_settings["statedir"],
2634
stored_state_file)
2635
foreground = server_settings["foreground"]
2636
zeroconf = server_settings["zeroconf"]
2637
2638
if debug:
2639
initlogger(debug, logging.DEBUG)
2640
else:
2641
if not debuglevel:
2642
initlogger(debug)
2643
else:
2644
level = getattr(logging, debuglevel.upper())
2645
initlogger(debug, level)
2646
2647
if server_settings["servicename"] != "Mandos":
2648
syslogger.setFormatter(
2649
logging.Formatter('Mandos ({}) [%(process)d]:'
2650
' %(levelname)s: %(message)s'.format(
2651
server_settings["servicename"])))
1766
2652
1767
2653
# Parse config file with clients
1768
client_defaults = { u"timeout": u"1h",
1769
u"interval": u"5m",
1770
u"checker": u"fping -q -- %%(host)s",
1771
u"host": u"",
1772
u"approval_delay": u"0s",
1773
u"approval_duration": u"1s",
1774
}
1775
client_config = configparser.SafeConfigParser(client_defaults)
1776
client_config.read(os.path.join(server_settings[u"configdir"],
1777
u"clients.conf"))
2654
client_config = configparser.SafeConfigParser(Client
2655
.client_defaults)
2656
client_config.read(os.path.join(server_settings["configdir"],
2657
"clients.conf"))
1778
2658
1779
2659
global mandos_dbus_service
1780
2660
mandos_dbus_service = None
1781
2661
1782
tcp_server = MandosServer((server_settings[u"address"],
1783
server_settings[u"port"]),
1784
ClientHandler,
1785
interface=(server_settings[u"interface"]
1786
or None),
1787
use_ipv6=use_ipv6,
1788
gnutls_priority=
1789
server_settings[u"priority"],
1790
use_dbus=use_dbus)
1791
if not debug:
1792
pidfilename = u"/var/run/mandos.pid"
2662
socketfd = None
2663
if server_settings["socket"] != "":
2664
socketfd = server_settings["socket"]
2665
tcp_server = MandosServer(
2666
(server_settings["address"], server_settings["port"]),
2667
ClientHandler,
2668
interface=(server_settings["interface"] or None),
2669
use_ipv6=use_ipv6,
2670
gnutls_priority=server_settings["priority"],
2671
use_dbus=use_dbus,
2672
socketfd=socketfd)
2673
if not foreground:
2674
pidfilename = "/run/mandos.pid"
2675
if not os.path.isdir("/run/."):
2676
pidfilename = "/var/run/mandos.pid"
2677
pidfile = None
1793
2678
try:
1794
pidfile = open(pidfilename, u"w")
1795
except IOError:
1796
logger.error(u"Could not open file %r", pidfilename)
2679
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2680
except IOError as e:
2681
logger.error("Could not open file %r", pidfilename,
2682
exc_info=e)
1797
2683
1798
try:
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
1801
except KeyError:
2684
for name in ("_mandos", "mandos", "nobody"):
1802
2685
try:
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
2686
uid = pwd.getpwnam(name).pw_uid
2687
gid = pwd.getpwnam(name).pw_gid
2688
break
1805
2689
except KeyError:
1806
try:
1807
uid = pwd.getpwnam(u"nobody").pw_uid
1808
gid = pwd.getpwnam(u"nobody").pw_gid
1809
except KeyError:
1810
uid = 65534
1811
gid = 65534
2690
continue
2691
else:
2692
uid = 65534
2693
gid = 65534
1812
2694
try:
1813
2695
os.setgid(gid)
1814
2696
os.setuid(uid)
1815
except OSError, error:
1816
if error[0] != errno.EPERM:
1817
raise error
2697
except OSError as error:
2698
if error.errno != errno.EPERM:
2699
raise
1818
2700
1819
if not debug and not debuglevel:
1820
syslogger.setLevel(logging.WARNING)
1821
console.setLevel(logging.WARNING)
1822
if debuglevel:
1823
level = getattr(logging, debuglevel.upper())
1824
syslogger.setLevel(level)
1825
console.setLevel(level)
1826
1827
2701
if debug:
1828
2702
# Enable all possible GnuTLS debugging
1829
2703
1833
2707
1834
2708
@gnutls.library.types.gnutls_log_func
1835
2709
def debug_gnutls(level, string):
1836
logger.debug(u"GnuTLS: %s", string[:-1])
2710
logger.debug("GnuTLS: %s", string[:-1])
1837
2711
1838
(gnutls.library.functions
1839
.gnutls_global_set_log_function(debug_gnutls))
2712
gnutls.library.functions.gnutls_global_set_log_function(
2713
debug_gnutls)
1840
2714
1841
2715
# Redirect stdin so all checkers get /dev/null
1842
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2716
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1843
2717
os.dup2(null, sys.stdin.fileno())
1844
2718
if null > 2:
1845
2719
os.close(null)
1846
else:
1847
# No console logging
1848
logger.removeHandler(console)
1849
2720
2721
# Need to fork before connecting to D-Bus
2722
if not foreground:
2723
# Close all input and output, do double fork, etc.
2724
daemon()
2725
2726
# multiprocessing will use threads, so before we use gobject we
2727
# need to inform gobject that threads will be used.
2728
gobject.threads_init()
1850
2729
1851
2730
global main_loop
1852
2731
# From the Avahi example code
1853
DBusGMainLoop(set_as_default=True )
2732
DBusGMainLoop(set_as_default=True)
1854
2733
main_loop = gobject.MainLoop()
1855
2734
bus = dbus.SystemBus()
1856
2735
# End of Avahi example code
1857
2736
if use_dbus:
1858
2737
try:
1859
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1860
bus, do_not_queue=True)
1861
except dbus.exceptions.NameExistsException, e:
1862
logger.error(unicode(e) + u", disabling D-Bus")
2738
bus_name = dbus.service.BusName("se.recompile.Mandos",
2739
bus,
2740
do_not_queue=True)
2741
old_bus_name = dbus.service.BusName(
2742
"se.bsnet.fukt.Mandos", bus,
2743
do_not_queue=True)
2744
except dbus.exceptions.DBusException as e:
2745
logger.error("Disabling D-Bus:", exc_info=e)
1863
2746
use_dbus = False
1864
server_settings[u"use_dbus"] = False
2747
server_settings["use_dbus"] = False
1865
2748
tcp_server.use_dbus = False
1866
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1867
service = AvahiService(name = server_settings[u"servicename"],
1868
servicetype = u"_mandos._tcp",
1869
protocol = protocol, bus = bus)
1870
if server_settings["interface"]:
1871
service.interface = (if_nametoindex
1872
(str(server_settings[u"interface"])))
1873
1874
if not debug:
1875
# Close all input and output, do double fork, etc.
1876
daemon()
1877
2749
if zeroconf:
2750
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2751
service = AvahiServiceToSyslog(
2752
name = server_settings["servicename"],
2753
servicetype = "_mandos._tcp",
2754
protocol = protocol,
2755
bus = bus)
2756
if server_settings["interface"]:
2757
service.interface = if_nametoindex(
2758
server_settings["interface"].encode("utf-8"))
2759
1878
2760
global multiprocessing_manager
1879
2761
multiprocessing_manager = multiprocessing.Manager()
1880
2762
1881
2763
client_class = Client
1882
2764
if use_dbus:
1883
2765
client_class = functools.partial(ClientDBus, bus = bus)
1884
def client_config_items(config, section):
1885
special_settings = {
1886
"approved_by_default":
1887
lambda: config.getboolean(section,
1888
"approved_by_default"),
1889
}
1890
for name, value in config.items(section):
2766
2767
client_settings = Client.config_parser(client_config)
2768
old_client_settings = {}
2769
clients_data = {}
2770
2771
# This is used to redirect stdout and stderr for checker processes
2772
global wnull
2773
wnull = open(os.devnull, "w") # A writable /dev/null
2774
# Only used if server is running in foreground but not in debug
2775
# mode
2776
if debug or not foreground:
2777
wnull.close()
2778
2779
# Get client data and settings from last running state.
2780
if server_settings["restore"]:
2781
try:
2782
with open(stored_state_path, "rb") as stored_state:
2783
clients_data, old_client_settings = pickle.load(
2784
stored_state)
2785
os.remove(stored_state_path)
2786
except IOError as e:
2787
if e.errno == errno.ENOENT:
2788
logger.warning("Could not load persistent state:"
2789
" {}".format(os.strerror(e.errno)))
2790
else:
2791
logger.critical("Could not load persistent state:",
2792
exc_info=e)
2793
raise
2794
except EOFError as e:
2795
logger.warning("Could not load persistent state: "
2796
"EOFError:",
2797
exc_info=e)
2798
2799
with PGPEngine() as pgp:
2800
for client_name, client in clients_data.items():
2801
# Skip removed clients
2802
if client_name not in client_settings:
2803
continue
2804
2805
# Decide which value to use after restoring saved state.
2806
# We have three different values: Old config file,
2807
# new config file, and saved state.
2808
# New config value takes precedence if it differs from old
2809
# config value, otherwise use saved state.
2810
for name, value in client_settings[client_name].items():
2811
try:
2812
# For each value in new config, check if it
2813
# differs from the old config value (Except for
2814
# the "secret" attribute)
2815
if (name != "secret"
2816
and (value !=
2817
old_client_settings[client_name][name])):
2818
client[name] = value
2819
except KeyError:
2820
pass
2821
2822
# Clients who has passed its expire date can still be
2823
# enabled if its last checker was successful. A Client
2824
# whose checker succeeded before we stored its state is
2825
# assumed to have successfully run all checkers during
2826
# downtime.
2827
if client["enabled"]:
2828
if datetime.datetime.utcnow() >= client["expires"]:
2829
if not client["last_checked_ok"]:
2830
logger.warning(
2831
"disabling client {} - Client never "
2832
"performed a successful checker".format(
2833
client_name))
2834
client["enabled"] = False
2835
elif client["last_checker_status"] != 0:
2836
logger.warning(
2837
"disabling client {} - Client last"
2838
" checker failed with error code"
2839
" {}".format(
2840
client_name,
2841
client["last_checker_status"]))
2842
client["enabled"] = False
2843
else:
2844
client["expires"] = (
2845
datetime.datetime.utcnow()
2846
+ client["timeout"])
2847
logger.debug("Last checker succeeded,"
2848
" keeping {} enabled".format(
2849
client_name))
1891
2850
try:
1892
yield (name, special_settings[name]())
1893
except KeyError:
1894
yield (name, value)
1895
1896
tcp_server.clients.update(set(
1897
client_class(name = section,
1898
config= dict(client_config_items(
1899
client_config, section)))
1900
for section in client_config.sections()))
2851
client["secret"] = pgp.decrypt(
2852
client["encrypted_secret"],
2853
client_settings[client_name]["secret"])
2854
except PGPError:
2855
# If decryption fails, we use secret from new settings
2856
logger.debug("Failed to decrypt {} old secret".format(
2857
client_name))
2858
client["secret"] = (client_settings[client_name]
2859
["secret"])
2860
2861
# Add/remove clients based on new changes made to config
2862
for client_name in (set(old_client_settings)
2863
- set(client_settings)):
2864
del clients_data[client_name]
2865
for client_name in (set(client_settings)
2866
- set(old_client_settings)):
2867
clients_data[client_name] = client_settings[client_name]
2868
2869
# Create all client objects
2870
for client_name, client in clients_data.items():
2871
tcp_server.clients[client_name] = client_class(
2872
name = client_name,
2873
settings = client,
2874
server_settings = server_settings)
2875
1901
2876
if not tcp_server.clients:
1902
logger.warning(u"No clients defined")
1903
1904
if not debug:
1905
try:
1906
with pidfile:
1907
pid = os.getpid()
1908
pidfile.write(str(pid) + "\n")
1909
del pidfile
1910
except IOError:
1911
logger.error(u"Could not write to file %r with PID %d",
1912
pidfilename, pid)
1913
except NameError:
1914
# "pidfile" was never created
1915
pass
2877
logger.warning("No clients defined")
2878
2879
if not foreground:
2880
if pidfile is not None:
2881
pid = os.getpid()
2882
try:
2883
with pidfile:
2884
print(pid, file=pidfile)
2885
except IOError:
2886
logger.error("Could not write to file %r with PID %d",
2887
pidfilename, pid)
2888
del pidfile
1916
2889
del pidfilename
1917
1918
signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
2890
1920
2891
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1921
2892
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1922
2893
1923
2894
if use_dbus:
1924
class MandosDBusService(dbus.service.Object):
2895
2896
@alternate_dbus_interfaces(
2897
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2898
class MandosDBusService(DBusObjectWithObjectManager):
1925
2899
"""A D-Bus proxy object"""
2900
1926
2901
def __init__(self):
1927
dbus.service.Object.__init__(self, bus, u"/")
1928
_interface = u"se.bsnet.fukt.Mandos"
1929
1930
@dbus.service.signal(_interface, signature=u"o")
2902
dbus.service.Object.__init__(self, bus, "/")
2903
2904
_interface = "se.recompile.Mandos"
2905
2906
@dbus.service.signal(_interface, signature="o")
1931
2907
def ClientAdded(self, objpath):
1932
2908
"D-Bus signal"
1933
2909
pass
1934
2910
1935
@dbus.service.signal(_interface, signature=u"ss")
2911
@dbus.service.signal(_interface, signature="ss")
1936
2912
def ClientNotFound(self, fingerprint, address):
1937
2913
"D-Bus signal"
1938
2914
pass
1939
2915
1940
@dbus.service.signal(_interface, signature=u"os")
2916
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2917
"true"})
2918
@dbus.service.signal(_interface, signature="os")
1941
2919
def ClientRemoved(self, objpath, name):
1942
2920
"D-Bus signal"
1943
2921
pass
1944
2922
1945
@dbus.service.method(_interface, out_signature=u"ao")
2923
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2924
"true"})
2925
@dbus.service.method(_interface, out_signature="ao")
1946
2926
def GetAllClients(self):
1947
2927
"D-Bus method"
1948
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
2928
return dbus.Array(c.dbus_object_path for c in
2929
tcp_server.clients.itervalues())
1950
2930
2931
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2932
"true"})
1951
2933
@dbus.service.method(_interface,
1952
out_signature=u"a{oa{sv}}")
2934
out_signature="a{oa{sv}}")
1953
2935
def GetAllClientsWithProperties(self):
1954
2936
"D-Bus method"
1955
2937
return dbus.Dictionary(
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
2938
{ c.dbus_object_path: c.GetAll(
2939
"se.recompile.Mandos.Client")
2940
for c in tcp_server.clients.itervalues() },
2941
signature="oa{sv}")
1959
2942
1960
@dbus.service.method(_interface, in_signature=u"o")
2943
@dbus.service.method(_interface, in_signature="o")
1961
2944
def RemoveClient(self, object_path):
1962
2945
"D-Bus method"
1963
for c in tcp_server.clients:
2946
for c in tcp_server.clients.itervalues():
1964
2947
if c.dbus_object_path == object_path:
1965
tcp_server.clients.remove(c)
2948
del tcp_server.clients[c.name]
1966
2949
c.remove_from_connection()
1967
# Don't signal anything except ClientRemoved
2950
# Don't signal the disabling
1968
2951
c.disable(quiet=True)
1969
# Emit D-Bus signal
1970
self.ClientRemoved(object_path, c.name)
2952
# Emit D-Bus signal for removal
2953
self.client_removed_signal(c)
1971
2954
return
1972
2955
raise KeyError(object_path)
1973
2956
1974
2957
del _interface
2958
2959
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
2960
out_signature = "a{oa{sa{sv}}}")
2961
def GetManagedObjects(self):
2962
"""D-Bus method"""
2963
return dbus.Dictionary(
2964
{ client.dbus_object_path:
2965
dbus.Dictionary(
2966
{ interface: client.GetAll(interface)
2967
for interface in
2968
client._get_all_interface_names()})
2969
for client in tcp_server.clients.values()})
2970
2971
def client_added_signal(self, client):
2972
"""Send the new standard signal and the old signal"""
2973
if use_dbus:
2974
# New standard signal
2975
self.InterfacesAdded(
2976
client.dbus_object_path,
2977
dbus.Dictionary(
2978
{ interface: client.GetAll(interface)
2979
for interface in
2980
client._get_all_interface_names()}))
2981
# Old signal
2982
self.ClientAdded(client.dbus_object_path)
2983
2984
def client_removed_signal(self, client):
2985
"""Send the new standard signal and the old signal"""
2986
if use_dbus:
2987
# New standard signal
2988
self.InterfacesRemoved(
2989
client.dbus_object_path,
2990
client._get_all_interface_names())
2991
# Old signal
2992
self.ClientRemoved(client.dbus_object_path,
2993
client.name)
1975
2994
1976
2995
mandos_dbus_service = MandosDBusService()
1977
2996
1978
2997
def cleanup():
1979
2998
"Cleanup function; run on exit"
1980
service.cleanup()
1981
2999
if zeroconf:
3000
service.cleanup()
3001
3002
multiprocessing.active_children()
3003
wnull.close()
3004
if not (tcp_server.clients or client_settings):
3005
return
3006
3007
# Store client before exiting. Secrets are encrypted with key
3008
# based on what config file has. If config file is
3009
# removed/edited, old secret will thus be unrecovable.
3010
clients = {}
3011
with PGPEngine() as pgp:
3012
for client in tcp_server.clients.itervalues():
3013
key = client_settings[client.name]["secret"]
3014
client.encrypted_secret = pgp.encrypt(client.secret,
3015
key)
3016
client_dict = {}
3017
3018
# A list of attributes that can not be pickled
3019
# + secret.
3020
exclude = { "bus", "changedstate", "secret",
3021
"checker", "server_settings" }
3022
for name, typ in inspect.getmembers(dbus.service
3023
.Object):
3024
exclude.add(name)
3025
3026
client_dict["encrypted_secret"] = (client
3027
.encrypted_secret)
3028
for attr in client.client_structure:
3029
if attr not in exclude:
3030
client_dict[attr] = getattr(client, attr)
3031
3032
clients[client.name] = client_dict
3033
del client_settings[client.name]["secret"]
3034
3035
try:
3036
with tempfile.NamedTemporaryFile(
3037
mode='wb',
3038
suffix=".pickle",
3039
prefix='clients-',
3040
dir=os.path.dirname(stored_state_path),
3041
delete=False) as stored_state:
3042
pickle.dump((clients, client_settings), stored_state)
3043
tempname = stored_state.name
3044
os.rename(tempname, stored_state_path)
3045
except (IOError, OSError) as e:
3046
if not debug:
3047
try:
3048
os.remove(tempname)
3049
except NameError:
3050
pass
3051
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3052
logger.warning("Could not save persistent state: {}"
3053
.format(os.strerror(e.errno)))
3054
else:
3055
logger.warning("Could not save persistent state:",
3056
exc_info=e)
3057
raise
3058
3059
# Delete all clients, and settings from config
1982
3060
while tcp_server.clients:
1983
client = tcp_server.clients.pop()
3061
name, client = tcp_server.clients.popitem()
1984
3062
if use_dbus:
1985
3063
client.remove_from_connection()
1986
client.disable_hook = None
1987
# Don't signal anything except ClientRemoved
3064
# Don't signal the disabling
1988
3065
client.disable(quiet=True)
1989
if use_dbus:
1990
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1992
client.name)
3066
# Emit D-Bus signal for removal
3067
mandos_dbus_service.client_removed_signal(client)
3068
client_settings.clear()
1993
3069
1994
3070
atexit.register(cleanup)
1995
3071
1996
for client in tcp_server.clients:
3072
for client in tcp_server.clients.itervalues():
1997
3073
if use_dbus:
1998
# Emit D-Bus signal
1999
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2000
client.enable()
3074
# Emit D-Bus signal for adding
3075
mandos_dbus_service.client_added_signal(client)
3076
# Need to initiate checking of clients
3077
if client.enabled:
3078
client.init_checker()
2001
3079
2002
3080
tcp_server.enable()
2003
3081
tcp_server.server_activate()
2004
3082
2005
3083
# Find out what port we got
2006
service.port = tcp_server.socket.getsockname()[1]
3084
if zeroconf:
3085
service.port = tcp_server.socket.getsockname()[1]
2007
3086
if use_ipv6:
2008
logger.info(u"Now listening on address %r, port %d,"
2009
" flowinfo %d, scope_id %d"
2010
% tcp_server.socket.getsockname())
3087
logger.info("Now listening on address %r, port %d,"
3088
" flowinfo %d, scope_id %d",
3089
*tcp_server.socket.getsockname())
2011
3090
else: # IPv4
2012
logger.info(u"Now listening on address %r, port %d"
2013
% tcp_server.socket.getsockname())
3091
logger.info("Now listening on address %r, port %d",
3092
*tcp_server.socket.getsockname())
2014
3093
2015
3094
#service.interface = tcp_server.socket.getsockname()[3]
2016
3095
2017
3096
try:
2018
# From the Avahi example code
2019
try:
2020
service.activate()
2021
except dbus.exceptions.DBusException, error:
2022
logger.critical(u"DBusException: %s", error)
2023
cleanup()
2024
sys.exit(1)
2025
# End of Avahi example code
3097
if zeroconf:
3098
# From the Avahi example code
3099
try:
3100
service.activate()
3101
except dbus.exceptions.DBusException as error:
3102
logger.critical("D-Bus Exception", exc_info=error)
3103
cleanup()
3104
sys.exit(1)
3105
# End of Avahi example code
2026
3106
2027
3107
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2028
3108
lambda *args, **kwargs:
2029
3109
(tcp_server.handle_request
2030
3110
(*args[2:], **kwargs) or True))
2031
3111
2032
logger.debug(u"Starting main loop")
3112
logger.debug("Starting main loop")
2033
3113
main_loop.run()
2034
except AvahiError, error:
2035
logger.critical(u"AvahiError: %s", error)
3114
except AvahiError as error:
3115
logger.critical("Avahi Error", exc_info=error)
2036
3116
cleanup()
2037
3117
sys.exit(1)
2038
3118
except KeyboardInterrupt:
2039
3119
if debug:
2040
print >> sys.stderr
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
3120
print("", file=sys.stderr)
3121
logger.debug("Server received KeyboardInterrupt")
3122
logger.debug("Server exiting")
2043
3123
# Must run before the D-Bus bus name gets deregistered
2044
3124
cleanup()
2045
3125
3126
2046
3127
if __name__ == '__main__':
2047
3128
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0