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- Committer: Teddy Hogeborn
- Date: 2011-02-27 17:26:35 UTC
- Revision ID: teddy@fukt.bsnet.se-20110227172635-hw1sire7k3vuo1co
Update copyright year to "2011" wherever appropriate.
- files removed:
- debian/mandos-client.examples
- debian/upstream
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python2.7
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 Björn Påhlsson
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
from future_builtins import *
38
39
try:
40
import SocketServer as socketserver
41
except ImportError:
42
import socketserver
37
import SocketServer as socketserver
43
38
import socket
44
import argparse
39
import optparse
45
40
import datetime
46
41
import errno
47
42
import gnutls.crypto
50
45
import gnutls.library.functions
51
46
import gnutls.library.constants
52
47
import gnutls.library.types
53
try:
54
import ConfigParser as configparser
55
except ImportError:
56
import configparser
48
import ConfigParser as configparser
57
49
import sys
58
50
import re
59
51
import os
68
60
import struct
69
61
import fcntl
70
62
import functools
71
try:
72
import cPickle as pickle
73
except ImportError:
74
import pickle
63
import cPickle as pickle
75
64
import multiprocessing
76
import types
77
import binascii
78
import tempfile
79
import itertools
80
import collections
81
65
82
66
import dbus
83
67
import dbus.service
84
try:
85
import gobject
86
except ImportError:
87
from gi.repository import GObject as gobject
68
import gobject
88
69
import avahi
89
70
from dbus.mainloop.glib import DBusGMainLoop
90
71
import ctypes
100
81
except ImportError:
101
82
SO_BINDTODEVICE = None
102
83
103
if sys.version_info.major == 2:
104
str = unicode
105
106
version = "1.6.9"
107
stored_state_file = "clients.pickle"
108
109
logger = logging.getLogger()
110
syslogger = None
111
112
try:
113
if_nametoindex = ctypes.cdll.LoadLibrary(
114
ctypes.util.find_library("c")).if_nametoindex
115
except (OSError, AttributeError):
116
117
def if_nametoindex(interface):
118
"Get an interface index the hard way, i.e. using fcntl()"
119
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
120
with contextlib.closing(socket.socket()) as s:
121
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
122
struct.pack(b"16s16x", interface))
123
interface_index = struct.unpack("I", ifreq[16:20])[0]
124
return interface_index
125
126
127
def initlogger(debug, level=logging.WARNING):
128
"""init logger and add loglevel"""
129
130
global syslogger
131
syslogger = (logging.handlers.SysLogHandler(
132
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
133
address = "/dev/log"))
134
syslogger.setFormatter(logging.Formatter
135
('Mandos [%(process)d]: %(levelname)s:'
136
' %(message)s'))
137
logger.addHandler(syslogger)
138
139
if debug:
140
console = logging.StreamHandler()
141
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
142
' [%(process)d]:'
143
' %(levelname)s:'
144
' %(message)s'))
145
logger.addHandler(console)
146
logger.setLevel(level)
147
148
149
class PGPError(Exception):
150
"""Exception if encryption/decryption fails"""
151
pass
152
153
154
class PGPEngine(object):
155
"""A simple class for OpenPGP symmetric encryption & decryption"""
156
157
def __init__(self):
158
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
159
self.gnupgargs = ['--batch',
160
'--home', self.tempdir,
161
'--force-mdc',
162
'--quiet',
163
'--no-use-agent']
164
165
def __enter__(self):
166
return self
167
168
def __exit__(self, exc_type, exc_value, traceback):
169
self._cleanup()
170
return False
171
172
def __del__(self):
173
self._cleanup()
174
175
def _cleanup(self):
176
if self.tempdir is not None:
177
# Delete contents of tempdir
178
for root, dirs, files in os.walk(self.tempdir,
179
topdown = False):
180
for filename in files:
181
os.remove(os.path.join(root, filename))
182
for dirname in dirs:
183
os.rmdir(os.path.join(root, dirname))
184
# Remove tempdir
185
os.rmdir(self.tempdir)
186
self.tempdir = None
187
188
def password_encode(self, password):
189
# Passphrase can not be empty and can not contain newlines or
190
# NUL bytes. So we prefix it and hex encode it.
191
encoded = b"mandos" + binascii.hexlify(password)
192
if len(encoded) > 2048:
193
# GnuPG can't handle long passwords, so encode differently
194
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
195
.replace(b"\n", b"\\n")
196
.replace(b"\0", b"\\x00"))
197
return encoded
198
199
def encrypt(self, data, password):
200
passphrase = self.password_encode(password)
201
with tempfile.NamedTemporaryFile(
202
dir=self.tempdir) as passfile:
203
passfile.write(passphrase)
204
passfile.flush()
205
proc = subprocess.Popen(['gpg', '--symmetric',
206
'--passphrase-file',
207
passfile.name]
208
+ self.gnupgargs,
209
stdin = subprocess.PIPE,
210
stdout = subprocess.PIPE,
211
stderr = subprocess.PIPE)
212
ciphertext, err = proc.communicate(input = data)
213
if proc.returncode != 0:
214
raise PGPError(err)
215
return ciphertext
216
217
def decrypt(self, data, password):
218
passphrase = self.password_encode(password)
219
with tempfile.NamedTemporaryFile(
220
dir = self.tempdir) as passfile:
221
passfile.write(passphrase)
222
passfile.flush()
223
proc = subprocess.Popen(['gpg', '--decrypt',
224
'--passphrase-file',
225
passfile.name]
226
+ self.gnupgargs,
227
stdin = subprocess.PIPE,
228
stdout = subprocess.PIPE,
229
stderr = subprocess.PIPE)
230
decrypted_plaintext, err = proc.communicate(input = data)
231
if proc.returncode != 0:
232
raise PGPError(err)
233
return decrypted_plaintext
234
84
85
version = "1.2.3"
86
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
89
syslogger = (logging.handlers.SysLogHandler
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
94
' %(message)s'))
95
logger.addHandler(syslogger)
96
97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
101
logger.addHandler(console)
235
102
236
103
class AvahiError(Exception):
237
104
def __init__(self, value, *args, **kwargs):
238
105
self.value = value
239
return super(AvahiError, self).__init__(value, *args,
240
**kwargs)
241
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
242
109
243
110
class AvahiServiceError(AvahiError):
244
111
pass
245
112
246
247
113
class AvahiGroupError(AvahiError):
248
114
pass
249
115
256
122
Used to optionally bind to the specified interface.
257
123
name: string; Example: 'Mandos'
258
124
type: string; Example: '_mandos._tcp'.
259
See <https://www.iana.org/assignments/service-names-port-numbers>
125
See <http://www.dns-sd.org/ServiceTypes.html>
260
126
port: integer; what port to announce
261
127
TXT: list of strings; TXT record for the service
262
128
domain: string; Domain to publish on, default to .local if empty.
268
134
server: D-Bus Server
269
135
bus: dbus.SystemBus()
270
136
"""
271
272
def __init__(self,
273
interface = avahi.IF_UNSPEC,
274
name = None,
275
servicetype = None,
276
port = None,
277
TXT = None,
278
domain = "",
279
host = "",
280
max_renames = 32768,
281
protocol = avahi.PROTO_UNSPEC,
282
bus = None):
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
servicetype = None, port = None, TXT = None,
139
domain = "", host = "", max_renames = 32768,
140
protocol = avahi.PROTO_UNSPEC, bus = None):
283
141
self.interface = interface
284
142
self.name = name
285
143
self.type = servicetype
293
151
self.group = None # our entry group
294
152
self.server = None
295
153
self.bus = bus
296
self.entry_group_state_changed_match = None
297
298
def rename(self, remove=True):
154
def rename(self):
299
155
"""Derived from the Avahi example code"""
300
156
if self.rename_count >= self.max_renames:
301
157
logger.critical("No suitable Zeroconf service name found"
302
158
" after %i retries, exiting.",
303
159
self.rename_count)
304
160
raise AvahiServiceError("Too many renames")
305
self.name = str(
306
self.server.GetAlternativeServiceName(self.name))
307
self.rename_count += 1
161
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
308
162
logger.info("Changing Zeroconf service name to %r ...",
309
163
self.name)
310
if remove:
311
self.remove()
164
syslogger.setFormatter(logging.Formatter
165
('Mandos (%s) [%%(process)d]:'
166
' %%(levelname)s: %%(message)s'
167
% self.name))
168
self.remove()
312
169
try:
313
170
self.add()
314
except dbus.exceptions.DBusException as error:
315
if (error.get_dbus_name()
316
== "org.freedesktop.Avahi.CollisionError"):
317
logger.info("Local Zeroconf service name collision.")
318
return self.rename(remove=False)
319
else:
320
logger.critical("D-Bus Exception", exc_info=error)
321
self.cleanup()
322
os._exit(1)
323
171
except dbus.exceptions.DBusException, error:
172
logger.critical("DBusException: %s", error)
173
self.cleanup()
174
os._exit(1)
175
self.rename_count += 1
324
176
def remove(self):
325
177
"""Derived from the Avahi example code"""
326
if self.entry_group_state_changed_match is not None:
327
self.entry_group_state_changed_match.remove()
328
self.entry_group_state_changed_match = None
329
178
if self.group is not None:
330
179
self.group.Reset()
331
332
180
def add(self):
333
181
"""Derived from the Avahi example code"""
334
self.remove()
335
182
if self.group is None:
336
183
self.group = dbus.Interface(
337
184
self.bus.get_object(avahi.DBUS_NAME,
338
185
self.server.EntryGroupNew()),
339
186
avahi.DBUS_INTERFACE_ENTRY_GROUP)
340
self.entry_group_state_changed_match = (
341
self.group.connect_to_signal(
342
'StateChanged', self.entry_group_state_changed))
187
self.group.connect_to_signal('StateChanged',
188
self
189
.entry_group_state_changed)
343
190
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
344
191
self.name, self.type)
345
192
self.group.AddService(
351
198
dbus.UInt16(self.port),
352
199
avahi.string_array_to_txt_array(self.TXT))
353
200
self.group.Commit()
354
355
201
def entry_group_state_changed(self, state, error):
356
202
"""Derived from the Avahi example code"""
357
203
logger.debug("Avahi entry group state change: %i", state)
363
209
self.rename()
364
210
elif state == avahi.ENTRY_GROUP_FAILURE:
365
211
logger.critical("Avahi: Error in group state changed %s",
366
str(error))
367
raise AvahiGroupError("State changed: {!s}".format(error))
368
212
unicode(error))
213
raise AvahiGroupError("State changed: %s"
214
% unicode(error))
369
215
def cleanup(self):
370
216
"""Derived from the Avahi example code"""
371
217
if self.group is not None:
372
try:
373
self.group.Free()
374
except (dbus.exceptions.UnknownMethodException,
375
dbus.exceptions.DBusException):
376
pass
218
self.group.Free()
377
219
self.group = None
378
self.remove()
379
380
def server_state_changed(self, state, error=None):
220
def server_state_changed(self, state):
381
221
"""Derived from the Avahi example code"""
382
222
logger.debug("Avahi server state change: %i", state)
383
bad_states = {
384
avahi.SERVER_INVALID: "Zeroconf server invalid",
385
avahi.SERVER_REGISTERING: None,
386
avahi.SERVER_COLLISION: "Zeroconf server name collision",
387
avahi.SERVER_FAILURE: "Zeroconf server failure",
388
}
389
if state in bad_states:
390
if bad_states[state] is not None:
391
if error is None:
392
logger.error(bad_states[state])
393
else:
394
logger.error(bad_states[state] + ": %r", error)
395
self.cleanup()
223
if state == avahi.SERVER_COLLISION:
224
logger.error("Zeroconf server name collision")
225
self.remove()
396
226
elif state == avahi.SERVER_RUNNING:
397
227
self.add()
398
else:
399
if error is None:
400
logger.debug("Unknown state: %r", state)
401
else:
402
logger.debug("Unknown state: %r: %r", state, error)
403
404
228
def activate(self):
405
229
"""Derived from the Avahi example code"""
406
230
if self.server is None:
407
231
self.server = dbus.Interface(
408
232
self.bus.get_object(avahi.DBUS_NAME,
409
avahi.DBUS_PATH_SERVER,
410
follow_name_owner_changes=True),
233
avahi.DBUS_PATH_SERVER),
411
234
avahi.DBUS_INTERFACE_SERVER)
412
235
self.server.connect_to_signal("StateChanged",
413
self.server_state_changed)
236
self.server_state_changed)
414
237
self.server_state_changed(self.server.GetState())
415
238
416
239
417
class AvahiServiceToSyslog(AvahiService):
418
def rename(self, *args, **kwargs):
419
"""Add the new name to the syslog messages"""
420
ret = AvahiService.rename(self, *args, **kwargs)
421
syslogger.setFormatter(logging.Formatter(
422
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
423
.format(self.name)))
424
return ret
425
426
def subprocess_call_pipe(connection, # : multiprocessing.Connection
427
*args, **kwargs):
428
"""This function is meant to be called by multiprocessing.Process
429
430
This function runs a synchronous subprocess.call(), and writes the
431
resulting return code on the provided multiprocessing.Connection.
432
"""
433
connection.send(subprocess.call(*args, **kwargs))
434
connection.close()
435
436
240
class Client(object):
437
241
"""A representation of a client host served by this server.
438
242
439
243
Attributes:
440
approved: bool(); 'None' if not yet approved/disapproved
244
_approved: bool(); 'None' if not yet approved/disapproved
441
245
approval_delay: datetime.timedelta(); Time to wait for approval
442
246
approval_duration: datetime.timedelta(); Duration of one approval
443
247
checker: subprocess.Popen(); a running checker process used
450
254
instance %(name)s can be used in the command.
451
255
checker_initiator_tag: a gobject event source tag, or None
452
256
created: datetime.datetime(); (UTC) object creation
453
client_structure: Object describing what attributes a client has
454
and is used for storing the client at exit
455
257
current_checker_command: string; current running checker_command
258
disable_hook: If set, called by disable() as disable_hook(self)
456
259
disable_initiator_tag: a gobject event source tag, or None
457
260
enabled: bool()
458
261
fingerprint: string (40 or 32 hexadecimal digits); used to
461
264
interval: datetime.timedelta(); How often to start a new checker
462
265
last_approval_request: datetime.datetime(); (UTC) or None
463
266
last_checked_ok: datetime.datetime(); (UTC) or None
464
last_checker_status: integer between 0 and 255 reflecting exit
465
status of last checker. -1 reflects crashed
466
checker, -2 means no checker completed yet.
467
last_checker_signal: The signal which killed the last checker, if
468
last_checker_status is -1
469
last_enabled: datetime.datetime(); (UTC) or None
267
last_enabled: datetime.datetime(); (UTC)
470
268
name: string; from the config file, used in log messages and
471
269
D-Bus identifiers
472
270
secret: bytestring; sent verbatim (over TLS) to client
473
271
timeout: datetime.timedelta(); How long from last_checked_ok
474
272
until this client is disabled
475
extended_timeout: extra long timeout when secret has been sent
476
273
runtime_expansions: Allowed attributes for runtime expansion.
477
expires: datetime.datetime(); time (UTC) when a client will be
478
disabled, or None
479
server_settings: The server_settings dict from main()
480
274
"""
481
275
482
276
runtime_expansions = ("approval_delay", "approval_duration",
483
"created", "enabled", "expires",
484
"fingerprint", "host", "interval",
485
"last_approval_request", "last_checked_ok",
277
"created", "enabled", "fingerprint",
278
"host", "interval", "last_checked_ok",
486
279
"last_enabled", "name", "timeout")
487
client_defaults = {
488
"timeout": "PT5M",
489
"extended_timeout": "PT15M",
490
"interval": "PT2M",
491
"checker": "fping -q -- %%(host)s",
492
"host": "",
493
"approval_delay": "PT0S",
494
"approval_duration": "PT1S",
495
"approved_by_default": "True",
496
"enabled": "True",
497
}
498
280
499
281
@staticmethod
500
def config_parser(config):
501
"""Construct a new dict of client settings of this form:
502
{ client_name: {setting_name: value, ...}, ...}
503
with exceptions for any special settings as defined above.
504
NOTE: Must be a pure function. Must return the same result
505
value given the same arguments.
506
"""
507
settings = {}
508
for client_name in config.sections():
509
section = dict(config.items(client_name))
510
client = settings[client_name] = {}
511
512
client["host"] = section["host"]
513
# Reformat values from string types to Python types
514
client["approved_by_default"] = config.getboolean(
515
client_name, "approved_by_default")
516
client["enabled"] = config.getboolean(client_name,
517
"enabled")
518
519
# Uppercase and remove spaces from fingerprint for later
520
# comparison purposes with return value from the
521
# fingerprint() function
522
client["fingerprint"] = (section["fingerprint"].upper()
523
.replace(" ", ""))
524
if "secret" in section:
525
client["secret"] = section["secret"].decode("base64")
526
elif "secfile" in section:
527
with open(os.path.expanduser(os.path.expandvars
528
(section["secfile"])),
529
"rb") as secfile:
530
client["secret"] = secfile.read()
531
else:
532
raise TypeError("No secret or secfile for section {}"
533
.format(section))
534
client["timeout"] = string_to_delta(section["timeout"])
535
client["extended_timeout"] = string_to_delta(
536
section["extended_timeout"])
537
client["interval"] = string_to_delta(section["interval"])
538
client["approval_delay"] = string_to_delta(
539
section["approval_delay"])
540
client["approval_duration"] = string_to_delta(
541
section["approval_duration"])
542
client["checker_command"] = section["checker"]
543
client["last_approval_request"] = None
544
client["last_checked_ok"] = None
545
client["last_checker_status"] = -2
546
547
return settings
548
549
def __init__(self, settings, name = None, server_settings=None):
282
def _timedelta_to_milliseconds(td):
283
"Convert a datetime.timedelta() to milliseconds"
284
return ((td.days * 24 * 60 * 60 * 1000)
285
+ (td.seconds * 1000)
286
+ (td.microseconds // 1000))
287
288
def timeout_milliseconds(self):
289
"Return the 'timeout' attribute in milliseconds"
290
return self._timedelta_to_milliseconds(self.timeout)
291
292
def interval_milliseconds(self):
293
"Return the 'interval' attribute in milliseconds"
294
return self._timedelta_to_milliseconds(self.interval)
295
296
def approval_delay_milliseconds(self):
297
return self._timedelta_to_milliseconds(self.approval_delay)
298
299
def __init__(self, name = None, disable_hook=None, config=None):
300
"""Note: the 'checker' key in 'config' sets the
301
'checker_command' attribute and *not* the 'checker'
302
attribute."""
550
303
self.name = name
551
if server_settings is None:
552
server_settings = {}
553
self.server_settings = server_settings
554
# adding all client settings
555
for setting, value in settings.items():
556
setattr(self, setting, value)
557
558
if self.enabled:
559
if not hasattr(self, "last_enabled"):
560
self.last_enabled = datetime.datetime.utcnow()
561
if not hasattr(self, "expires"):
562
self.expires = (datetime.datetime.utcnow()
563
+ self.timeout)
564
else:
565
self.last_enabled = None
566
self.expires = None
567
304
if config is None:
305
config = {}
568
306
logger.debug("Creating client %r", self.name)
307
# Uppercase and remove spaces from fingerprint for later
308
# comparison purposes with return value from the fingerprint()
309
# function
310
self.fingerprint = (config["fingerprint"].upper()
311
.replace(" ", ""))
569
312
logger.debug(" Fingerprint: %s", self.fingerprint)
570
self.created = settings.get("created",
571
datetime.datetime.utcnow())
572
573
# attributes specific for this server instance
313
if "secret" in config:
314
self.secret = config["secret"].decode("base64")
315
elif "secfile" in config:
316
with open(os.path.expanduser(os.path.expandvars
317
(config["secfile"])),
318
"rb") as secfile:
319
self.secret = secfile.read()
320
else:
321
raise TypeError("No secret or secfile for client %s"
322
% self.name)
323
self.host = config.get("host", "")
324
self.created = datetime.datetime.utcnow()
325
self.enabled = False
326
self.last_approval_request = None
327
self.last_enabled = None
328
self.last_checked_ok = None
329
self.timeout = string_to_delta(config["timeout"])
330
self.interval = string_to_delta(config["interval"])
331
self.disable_hook = disable_hook
574
332
self.checker = None
575
333
self.checker_initiator_tag = None
576
334
self.disable_initiator_tag = None
577
335
self.checker_callback_tag = None
336
self.checker_command = config["checker"]
578
337
self.current_checker_command = None
579
self.approved = None
338
self.last_connect = None
339
self._approved = None
340
self.approved_by_default = config.get("approved_by_default",
341
True)
580
342
self.approvals_pending = 0
581
self.changedstate = multiprocessing_manager.Condition(
582
multiprocessing_manager.Lock())
583
self.client_structure = [attr
584
for attr in self.__dict__.iterkeys()
585
if not attr.startswith("_")]
586
self.client_structure.append("client_structure")
587
588
for name, t in inspect.getmembers(
589
type(self), lambda obj: isinstance(obj, property)):
590
if not name.startswith("_"):
591
self.client_structure.append(name)
343
self.approval_delay = string_to_delta(
344
config["approval_delay"])
345
self.approval_duration = string_to_delta(
346
config["approval_duration"])
347
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
592
348
593
# Send notice to process children that client state has changed
594
349
def send_changedstate(self):
595
with self.changedstate:
596
self.changedstate.notify_all()
597
350
self.changedstate.acquire()
351
self.changedstate.notify_all()
352
self.changedstate.release()
353
598
354
def enable(self):
599
355
"""Start this client's checker and timeout hooks"""
600
356
if getattr(self, "enabled", False):
601
357
# Already enabled
602
358
return
603
self.expires = datetime.datetime.utcnow() + self.timeout
604
self.enabled = True
359
self.send_changedstate()
605
360
self.last_enabled = datetime.datetime.utcnow()
606
self.init_checker()
607
self.send_changedstate()
361
# Schedule a new checker to be started an 'interval' from now,
362
# and every interval from then on.
363
self.checker_initiator_tag = (gobject.timeout_add
364
(self.interval_milliseconds(),
365
self.start_checker))
366
# Schedule a disable() when 'timeout' has passed
367
self.disable_initiator_tag = (gobject.timeout_add
368
(self.timeout_milliseconds(),
369
self.disable))
370
self.enabled = True
371
# Also start a new checker *right now*.
372
self.start_checker()
608
373
609
374
def disable(self, quiet=True):
610
375
"""Disable this client."""
611
376
if not getattr(self, "enabled", False):
612
377
return False
613
378
if not quiet:
379
self.send_changedstate()
380
if not quiet:
614
381
logger.info("Disabling client %s", self.name)
615
if getattr(self, "disable_initiator_tag", None) is not None:
382
if getattr(self, "disable_initiator_tag", False):
616
383
gobject.source_remove(self.disable_initiator_tag)
617
384
self.disable_initiator_tag = None
618
self.expires = None
619
if getattr(self, "checker_initiator_tag", None) is not None:
385
if getattr(self, "checker_initiator_tag", False):
620
386
gobject.source_remove(self.checker_initiator_tag)
621
387
self.checker_initiator_tag = None
622
388
self.stop_checker()
389
if self.disable_hook:
390
self.disable_hook(self)
623
391
self.enabled = False
624
if not quiet:
625
self.send_changedstate()
626
392
# Do not run this again if called by a gobject.timeout_add
627
393
return False
628
394
629
395
def __del__(self):
396
self.disable_hook = None
630
397
self.disable()
631
398
632
def init_checker(self):
633
# Schedule a new checker to be started an 'interval' from now,
634
# and every interval from then on.
635
if self.checker_initiator_tag is not None:
636
gobject.source_remove(self.checker_initiator_tag)
637
self.checker_initiator_tag = gobject.timeout_add(
638
int(self.interval.total_seconds() * 1000),
639
self.start_checker)
640
# Schedule a disable() when 'timeout' has passed
641
if self.disable_initiator_tag is not None:
642
gobject.source_remove(self.disable_initiator_tag)
643
self.disable_initiator_tag = gobject.timeout_add(
644
int(self.timeout.total_seconds() * 1000), self.disable)
645
# Also start a new checker *right now*.
646
self.start_checker()
647
648
def checker_callback(self, source, condition,
649
(connection, command)):
399
def checker_callback(self, pid, condition, command):
650
400
"""The checker has completed, so take appropriate actions."""
651
401
self.checker_callback_tag = None
652
402
self.checker = None
653
# Read return code from connection (see subprocess_call_pipe)
654
returncode = connection.recv()
655
connection.close()
656
657
if returncode >= 0:
658
self.last_checker_status = returncode
659
self.last_checker_signal = None
660
if self.last_checker_status == 0:
403
if os.WIFEXITED(condition):
404
exitstatus = os.WEXITSTATUS(condition)
405
if exitstatus == 0:
661
406
logger.info("Checker for %(name)s succeeded",
662
407
vars(self))
663
408
self.checked_ok()
664
409
else:
665
logger.info("Checker for %(name)s failed", vars(self))
410
logger.info("Checker for %(name)s failed",
411
vars(self))
666
412
else:
667
self.last_checker_status = -1
668
self.last_checker_signal = -returncode
669
413
logger.warning("Checker for %(name)s crashed?",
670
414
vars(self))
671
return False
672
415
673
416
def checked_ok(self):
674
"""Assert that the client has been seen, alive and well."""
417
"""Bump up the timeout for this client.
418
419
This should only be called when the client has been seen,
420
alive and well.
421
"""
675
422
self.last_checked_ok = datetime.datetime.utcnow()
676
self.last_checker_status = 0
677
self.last_checker_signal = None
678
self.bump_timeout()
679
680
def bump_timeout(self, timeout=None):
681
"""Bump up the timeout for this client."""
682
if timeout is None:
683
timeout = self.timeout
684
if self.disable_initiator_tag is not None:
685
gobject.source_remove(self.disable_initiator_tag)
686
self.disable_initiator_tag = None
687
if getattr(self, "enabled", False):
688
self.disable_initiator_tag = gobject.timeout_add(
689
int(timeout.total_seconds() * 1000), self.disable)
690
self.expires = datetime.datetime.utcnow() + timeout
423
gobject.source_remove(self.disable_initiator_tag)
424
self.disable_initiator_tag = (gobject.timeout_add
425
(self.timeout_milliseconds(),
426
self.disable))
691
427
692
428
def need_approval(self):
693
429
self.last_approval_request = datetime.datetime.utcnow()
698
434
If a checker already exists, leave it running and do
699
435
nothing."""
700
436
# The reason for not killing a running checker is that if we
701
# did that, and if a checker (for some reason) started running
702
# slowly and taking more than 'interval' time, then the client
703
# would inevitably timeout, since no checker would get a
704
# chance to run to completion. If we instead leave running
437
# did that, then if a checker (for some reason) started
438
# running slowly and taking more than 'interval' time, the
439
# client would inevitably timeout, since no checker would get
440
# a chance to run to completion. If we instead leave running
705
441
# checkers alone, the checker would have to take more time
706
442
# than 'timeout' for the client to be disabled, which is as it
707
443
# should be.
708
444
709
if self.checker is not None and not self.checker.is_alive():
710
logger.warning("Checker was not alive; joining")
711
self.checker.join()
712
self.checker = None
445
# If a checker exists, make sure it is not a zombie
446
try:
447
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
448
except (AttributeError, OSError), error:
449
if (isinstance(error, OSError)
450
and error.errno != errno.ECHILD):
451
raise error
452
else:
453
if pid:
454
logger.warning("Checker was a zombie")
455
gobject.source_remove(self.checker_callback_tag)
456
self.checker_callback(pid, status,
457
self.current_checker_command)
713
458
# Start a new checker if needed
714
459
if self.checker is None:
715
# Escape attributes for the shell
716
escaped_attrs = {
717
attr: re.escape(str(getattr(self, attr)))
718
for attr in self.runtime_expansions }
719
460
try:
720
command = self.checker_command % escaped_attrs
721
except TypeError as error:
722
logger.error('Could not format string "%s"',
723
self.checker_command,
724
exc_info=error)
725
return True # Try again later
461
# In case checker_command has exactly one % operator
462
command = self.checker_command % self.host
463
except TypeError:
464
# Escape attributes for the shell
465
escaped_attrs = dict(
466
(attr,
467
re.escape(unicode(str(getattr(self, attr, "")),
468
errors=
469
'replace')))
470
for attr in
471
self.runtime_expansions)
472
473
try:
474
command = self.checker_command % escaped_attrs
475
except TypeError, error:
476
logger.error('Could not format string "%s":'
477
' %s', self.checker_command, error)
478
return True # Try again later
726
479
self.current_checker_command = command
727
logger.info("Starting checker %r for %s", command,
728
self.name)
729
# We don't need to redirect stdout and stderr, since
730
# in normal mode, that is already done by daemon(),
731
# and in debug mode we don't want to. (Stdin is
732
# always replaced by /dev/null.)
733
# The exception is when not debugging but nevertheless
734
# running in the foreground; use the previously
735
# created wnull.
736
popen_args = { "close_fds": True,
737
"shell": True,
738
"cwd": "/" }
739
if (not self.server_settings["debug"]
740
and self.server_settings["foreground"]):
741
popen_args.update({"stdout": wnull,
742
"stderr": wnull })
743
pipe = multiprocessing.Pipe(duplex=False)
744
self.checker = multiprocessing.Process(
745
target=subprocess_call_pipe, args=(pipe[1], command),
746
kwargs=popen_args)
747
self.checker.start()
748
self.checker_callback_tag = gobject.io_add_watch(
749
pipe[0].fileno(), gobject.IO_IN,
750
self.checker_callback, (pipe[0], command))
480
try:
481
logger.info("Starting checker %r for %s",
482
command, self.name)
483
# We don't need to redirect stdout and stderr, since
484
# in normal mode, that is already done by daemon(),
485
# and in debug mode we don't want to. (Stdin is
486
# always replaced by /dev/null.)
487
self.checker = subprocess.Popen(command,
488
close_fds=True,
489
shell=True, cwd="/")
490
self.checker_callback_tag = (gobject.child_watch_add
491
(self.checker.pid,
492
self.checker_callback,
493
data=command))
494
# The checker may have completed before the gobject
495
# watch was added. Check for this.
496
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
497
if pid:
498
gobject.source_remove(self.checker_callback_tag)
499
self.checker_callback(pid, status, command)
500
except OSError, error:
501
logger.error("Failed to start subprocess: %s",
502
error)
751
503
# Re-run this periodically if run by gobject.timeout_add
752
504
return True
753
505
759
511
if getattr(self, "checker", None) is None:
760
512
return
761
513
logger.debug("Stopping checker for %(name)s", vars(self))
762
self.checker.terminate()
514
try:
515
os.kill(self.checker.pid, signal.SIGTERM)
516
#time.sleep(0.5)
517
#if self.checker.poll() is None:
518
# os.kill(self.checker.pid, signal.SIGKILL)
519
except OSError, error:
520
if error.errno != errno.ESRCH: # No such process
521
raise
763
522
self.checker = None
764
523
765
766
def dbus_service_property(dbus_interface,
767
signature="v",
768
access="readwrite",
769
byte_arrays=False):
524
def dbus_service_property(dbus_interface, signature="v",
525
access="readwrite", byte_arrays=False):
770
526
"""Decorators for marking methods of a DBusObjectWithProperties to
771
527
become properties on the D-Bus.
772
528
781
537
# "Set" method, so we fail early here:
782
538
if byte_arrays and signature != "ay":
783
539
raise ValueError("Byte arrays not supported for non-'ay'"
784
" signature {!r}".format(signature))
785
540
" signature %r" % signature)
786
541
def decorator(func):
787
542
func._dbus_is_property = True
788
543
func._dbus_interface = dbus_interface
793
548
func._dbus_name = func._dbus_name[:-14]
794
549
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
795
550
return func
796
797
return decorator
798
799
800
def dbus_interface_annotations(dbus_interface):
801
"""Decorator for marking functions returning interface annotations
802
803
Usage:
804
805
@dbus_interface_annotations("org.example.Interface")
806
def _foo(self): # Function name does not matter
807
return {"org.freedesktop.DBus.Deprecated": "true",
808
"org.freedesktop.DBus.Property.EmitsChangedSignal":
809
"false"}
810
"""
811
812
def decorator(func):
813
func._dbus_is_interface = True
814
func._dbus_interface = dbus_interface
815
func._dbus_name = dbus_interface
816
return func
817
818
return decorator
819
820
821
def dbus_annotations(annotations):
822
"""Decorator to annotate D-Bus methods, signals or properties
823
Usage:
824
825
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
826
"org.freedesktop.DBus.Property."
827
"EmitsChangedSignal": "false"})
828
@dbus_service_property("org.example.Interface", signature="b",
829
access="r")
830
def Property_dbus_property(self):
831
return dbus.Boolean(False)
832
"""
833
834
def decorator(func):
835
func._dbus_annotations = annotations
836
return func
837
838
551
return decorator
839
552
840
553
841
554
class DBusPropertyException(dbus.exceptions.DBusException):
842
555
"""A base class for D-Bus property-related exceptions
843
556
"""
844
pass
557
def __unicode__(self):
558
return unicode(str(self))
845
559
846
560
847
561
class DBusPropertyAccessException(DBusPropertyException):
858
572
859
573
class DBusObjectWithProperties(dbus.service.Object):
860
574
"""A D-Bus object with properties.
861
575
862
576
Classes inheriting from this can use the dbus_service_property
863
577
decorator to expose methods as D-Bus properties. It exposes the
864
578
standard Get(), Set(), and GetAll() methods on the D-Bus.
865
579
"""
866
580
867
581
@staticmethod
868
def _is_dbus_thing(thing):
869
"""Returns a function testing if an attribute is a D-Bus thing
870
871
If called like _is_dbus_thing("method") it returns a function
872
suitable for use as predicate to inspect.getmembers().
873
"""
874
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
875
False)
582
def _is_dbus_property(obj):
583
return getattr(obj, "_dbus_is_property", False)
876
584
877
def _get_all_dbus_things(self, thing):
585
def _get_all_dbus_properties(self):
878
586
"""Returns a generator of (name, attribute) pairs
879
587
"""
880
return ((getattr(athing.__get__(self), "_dbus_name", name),
881
athing.__get__(self))
882
for cls in self.__class__.__mro__
883
for name, athing in
884
inspect.getmembers(cls, self._is_dbus_thing(thing)))
588
return ((prop._dbus_name, prop)
589
for name, prop in
590
inspect.getmembers(self, self._is_dbus_property))
885
591
886
592
def _get_dbus_property(self, interface_name, property_name):
887
593
"""Returns a bound method if one exists which is a D-Bus
888
594
property with the specified name and interface.
889
595
"""
890
for cls in self.__class__.__mro__:
891
for name, value in inspect.getmembers(
892
cls, self._is_dbus_thing("property")):
893
if (value._dbus_name == property_name
894
and value._dbus_interface == interface_name):
895
return value.__get__(self)
896
596
for name in (property_name,
597
property_name + "_dbus_property"):
598
prop = getattr(self, name, None)
599
if (prop is None
600
or not self._is_dbus_property(prop)
601
or prop._dbus_name != property_name
602
or (interface_name and prop._dbus_interface
603
and interface_name != prop._dbus_interface)):
604
continue
605
return prop
897
606
# No such property
898
raise DBusPropertyNotFound("{}:{}.{}".format(
899
self.dbus_object_path, interface_name, property_name))
607
raise DBusPropertyNotFound(self.dbus_object_path + ":"
608
+ interface_name + "."
609
+ property_name)
900
610
901
@dbus.service.method(dbus.PROPERTIES_IFACE,
902
in_signature="ss",
611
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
903
612
out_signature="v")
904
613
def Get(self, interface_name, property_name):
905
614
"""Standard D-Bus property Get() method, see D-Bus standard.
923
632
# The byte_arrays option is not supported yet on
924
633
# signatures other than "ay".
925
634
if prop._dbus_signature != "ay":
926
raise ValueError("Byte arrays not supported for non-"
927
"'ay' signature {!r}"
928
.format(prop._dbus_signature))
929
value = dbus.ByteArray(b''.join(chr(byte)
930
for byte in value))
635
raise ValueError
636
value = dbus.ByteArray(''.join(unichr(byte)
637
for byte in value))
931
638
prop(value)
932
639
933
@dbus.service.method(dbus.PROPERTIES_IFACE,
934
in_signature="s",
640
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
935
641
out_signature="a{sv}")
936
642
def GetAll(self, interface_name):
937
643
"""Standard D-Bus property GetAll() method, see D-Bus
938
644
standard.
939
645
940
646
Note: Will not include properties with access="write".
941
647
"""
942
properties = {}
943
for name, prop in self._get_all_dbus_things("property"):
648
all = {}
649
for name, prop in self._get_all_dbus_properties():
944
650
if (interface_name
945
651
and interface_name != prop._dbus_interface):
946
652
# Interface non-empty but did not match
950
656
continue
951
657
value = prop()
952
658
if not hasattr(value, "variant_level"):
953
properties[name] = value
659
all[name] = value
954
660
continue
955
properties[name] = type(value)(
956
value, variant_level = value.variant_level + 1)
957
return dbus.Dictionary(properties, signature="sv")
958
959
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
960
def PropertiesChanged(self, interface_name, changed_properties,
961
invalidated_properties):
962
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
963
standard.
964
"""
965
pass
661
all[name] = type(value)(value, variant_level=
662
value.variant_level+1)
663
return dbus.Dictionary(all, signature="sv")
966
664
967
665
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
968
666
out_signature="s",
969
667
path_keyword='object_path',
970
668
connection_keyword='connection')
971
669
def Introspect(self, object_path, connection):
972
"""Overloading of standard D-Bus method.
973
974
Inserts property tags and interface annotation tags.
670
"""Standard D-Bus method, overloaded to insert property tags.
975
671
"""
976
672
xmlstring = dbus.service.Object.Introspect(self, object_path,
977
673
connection)
978
674
try:
979
675
document = xml.dom.minidom.parseString(xmlstring)
980
981
676
def make_tag(document, name, prop):
982
677
e = document.createElement("property")
983
678
e.setAttribute("name", name)
984
679
e.setAttribute("type", prop._dbus_signature)
985
680
e.setAttribute("access", prop._dbus_access)
986
681
return e
987
988
682
for if_tag in document.getElementsByTagName("interface"):
989
# Add property tags
990
683
for tag in (make_tag(document, name, prop)
991
684
for name, prop
992
in self._get_all_dbus_things("property")
685
in self._get_all_dbus_properties()
993
686
if prop._dbus_interface
994
687
== if_tag.getAttribute("name")):
995
688
if_tag.appendChild(tag)
996
# Add annotation tags
997
for typ in ("method", "signal", "property"):
998
for tag in if_tag.getElementsByTagName(typ):
999
annots = dict()
1000
for name, prop in (self.
1001
_get_all_dbus_things(typ)):
1002
if (name == tag.getAttribute("name")
1003
and prop._dbus_interface
1004
== if_tag.getAttribute("name")):
1005
annots.update(getattr(
1006
prop, "_dbus_annotations", {}))
1007
for name, value in annots.items():
1008
ann_tag = document.createElement(
1009
"annotation")
1010
ann_tag.setAttribute("name", name)
1011
ann_tag.setAttribute("value", value)
1012
tag.appendChild(ann_tag)
1013
# Add interface annotation tags
1014
for annotation, value in dict(
1015
itertools.chain.from_iterable(
1016
annotations().items()
1017
for name, annotations
1018
in self._get_all_dbus_things("interface")
1019
if name == if_tag.getAttribute("name")
1020
)).items():
1021
ann_tag = document.createElement("annotation")
1022
ann_tag.setAttribute("name", annotation)
1023
ann_tag.setAttribute("value", value)
1024
if_tag.appendChild(ann_tag)
1025
689
# Add the names to the return values for the
1026
690
# "org.freedesktop.DBus.Properties" methods
1027
691
if (if_tag.getAttribute("name")
1040
704
xmlstring = document.toxml("utf-8")
1041
705
document.unlink()
1042
706
except (AttributeError, xml.dom.DOMException,
1043
xml.parsers.expat.ExpatError) as error:
707
xml.parsers.expat.ExpatError), error:
1044
708
logger.error("Failed to override Introspection method",
1045
exc_info=error)
709
error)
1046
710
return xmlstring
1047
711
1048
712
1049
def datetime_to_dbus(dt, variant_level=0):
1050
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1051
if dt is None:
1052
return dbus.String("", variant_level = variant_level)
1053
return dbus.String(dt.isoformat(), variant_level=variant_level)
1054
1055
1056
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1057
"""A class decorator; applied to a subclass of
1058
dbus.service.Object, it will add alternate D-Bus attributes with
1059
interface names according to the "alt_interface_names" mapping.
1060
Usage:
1061
1062
@alternate_dbus_interfaces({"org.example.Interface":
1063
"net.example.AlternateInterface"})
1064
class SampleDBusObject(dbus.service.Object):
1065
@dbus.service.method("org.example.Interface")
1066
def SampleDBusMethod():
1067
pass
1068
1069
The above "SampleDBusMethod" on "SampleDBusObject" will be
1070
reachable via two interfaces: "org.example.Interface" and
1071
"net.example.AlternateInterface", the latter of which will have
1072
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1073
"true", unless "deprecate" is passed with a False value.
1074
1075
This works for methods and signals, and also for D-Bus properties
1076
(from DBusObjectWithProperties) and interfaces (from the
1077
dbus_interface_annotations decorator).
1078
"""
1079
1080
def wrapper(cls):
1081
for orig_interface_name, alt_interface_name in (
1082
alt_interface_names.items()):
1083
attr = {}
1084
interface_names = set()
1085
# Go though all attributes of the class
1086
for attrname, attribute in inspect.getmembers(cls):
1087
# Ignore non-D-Bus attributes, and D-Bus attributes
1088
# with the wrong interface name
1089
if (not hasattr(attribute, "_dbus_interface")
1090
or not attribute._dbus_interface.startswith(
1091
orig_interface_name)):
1092
continue
1093
# Create an alternate D-Bus interface name based on
1094
# the current name
1095
alt_interface = attribute._dbus_interface.replace(
1096
orig_interface_name, alt_interface_name)
1097
interface_names.add(alt_interface)
1098
# Is this a D-Bus signal?
1099
if getattr(attribute, "_dbus_is_signal", False):
1100
# Extract the original non-method undecorated
1101
# function by black magic
1102
nonmethod_func = (dict(
1103
zip(attribute.func_code.co_freevars,
1104
attribute.__closure__))
1105
["func"].cell_contents)
1106
# Create a new, but exactly alike, function
1107
# object, and decorate it to be a new D-Bus signal
1108
# with the alternate D-Bus interface name
1109
new_function = (dbus.service.signal(
1110
alt_interface, attribute._dbus_signature)
1111
(types.FunctionType(
1112
nonmethod_func.func_code,
1113
nonmethod_func.func_globals,
1114
nonmethod_func.func_name,
1115
nonmethod_func.func_defaults,
1116
nonmethod_func.func_closure)))
1117
# Copy annotations, if any
1118
try:
1119
new_function._dbus_annotations = dict(
1120
attribute._dbus_annotations)
1121
except AttributeError:
1122
pass
1123
# Define a creator of a function to call both the
1124
# original and alternate functions, so both the
1125
# original and alternate signals gets sent when
1126
# the function is called
1127
def fixscope(func1, func2):
1128
"""This function is a scope container to pass
1129
func1 and func2 to the "call_both" function
1130
outside of its arguments"""
1131
1132
def call_both(*args, **kwargs):
1133
"""This function will emit two D-Bus
1134
signals by calling func1 and func2"""
1135
func1(*args, **kwargs)
1136
func2(*args, **kwargs)
1137
1138
return call_both
1139
# Create the "call_both" function and add it to
1140
# the class
1141
attr[attrname] = fixscope(attribute, new_function)
1142
# Is this a D-Bus method?
1143
elif getattr(attribute, "_dbus_is_method", False):
1144
# Create a new, but exactly alike, function
1145
# object. Decorate it to be a new D-Bus method
1146
# with the alternate D-Bus interface name. Add it
1147
# to the class.
1148
attr[attrname] = (
1149
dbus.service.method(
1150
alt_interface,
1151
attribute._dbus_in_signature,
1152
attribute._dbus_out_signature)
1153
(types.FunctionType(attribute.func_code,
1154
attribute.func_globals,
1155
attribute.func_name,
1156
attribute.func_defaults,
1157
attribute.func_closure)))
1158
# Copy annotations, if any
1159
try:
1160
attr[attrname]._dbus_annotations = dict(
1161
attribute._dbus_annotations)
1162
except AttributeError:
1163
pass
1164
# Is this a D-Bus property?
1165
elif getattr(attribute, "_dbus_is_property", False):
1166
# Create a new, but exactly alike, function
1167
# object, and decorate it to be a new D-Bus
1168
# property with the alternate D-Bus interface
1169
# name. Add it to the class.
1170
attr[attrname] = (dbus_service_property(
1171
alt_interface, attribute._dbus_signature,
1172
attribute._dbus_access,
1173
attribute._dbus_get_args_options
1174
["byte_arrays"])
1175
(types.FunctionType(
1176
attribute.func_code,
1177
attribute.func_globals,
1178
attribute.func_name,
1179
attribute.func_defaults,
1180
attribute.func_closure)))
1181
# Copy annotations, if any
1182
try:
1183
attr[attrname]._dbus_annotations = dict(
1184
attribute._dbus_annotations)
1185
except AttributeError:
1186
pass
1187
# Is this a D-Bus interface?
1188
elif getattr(attribute, "_dbus_is_interface", False):
1189
# Create a new, but exactly alike, function
1190
# object. Decorate it to be a new D-Bus interface
1191
# with the alternate D-Bus interface name. Add it
1192
# to the class.
1193
attr[attrname] = (
1194
dbus_interface_annotations(alt_interface)
1195
(types.FunctionType(attribute.func_code,
1196
attribute.func_globals,
1197
attribute.func_name,
1198
attribute.func_defaults,
1199
attribute.func_closure)))
1200
if deprecate:
1201
# Deprecate all alternate interfaces
1202
iname="_AlternateDBusNames_interface_annotation{}"
1203
for interface_name in interface_names:
1204
1205
@dbus_interface_annotations(interface_name)
1206
def func(self):
1207
return { "org.freedesktop.DBus.Deprecated":
1208
"true" }
1209
# Find an unused name
1210
for aname in (iname.format(i)
1211
for i in itertools.count()):
1212
if aname not in attr:
1213
attr[aname] = func
1214
break
1215
if interface_names:
1216
# Replace the class with a new subclass of it with
1217
# methods, signals, etc. as created above.
1218
cls = type(b"{}Alternate".format(cls.__name__),
1219
(cls, ), attr)
1220
return cls
1221
1222
return wrapper
1223
1224
1225
@alternate_dbus_interfaces({"se.recompile.Mandos":
1226
"se.bsnet.fukt.Mandos"})
1227
713
class ClientDBus(Client, DBusObjectWithProperties):
1228
714
"""A Client class using D-Bus
1229
715
1233
719
"""
1234
720
1235
721
runtime_expansions = (Client.runtime_expansions
1236
+ ("dbus_object_path", ))
1237
1238
_interface = "se.recompile.Mandos.Client"
722
+ ("dbus_object_path",))
1239
723
1240
724
# dbus.service.Object doesn't use super(), so we can't either.
1241
725
1242
726
def __init__(self, bus = None, *args, **kwargs):
727
self._approvals_pending = 0
1243
728
self.bus = bus
1244
729
Client.__init__(self, *args, **kwargs)
1245
730
# Only now, when this client is initialized, can it show up on
1246
731
# the D-Bus
1247
client_object_name = str(self.name).translate(
732
client_object_name = unicode(self.name).translate(
1248
733
{ord("."): ord("_"),
1249
734
ord("-"): ord("_")})
1250
self.dbus_object_path = dbus.ObjectPath(
1251
"/clients/" + client_object_name)
735
self.dbus_object_path = (dbus.ObjectPath
736
("/clients/" + client_object_name))
1252
737
DBusObjectWithProperties.__init__(self, self.bus,
1253
738
self.dbus_object_path)
1254
1255
def notifychangeproperty(transform_func, dbus_name,
1256
type_func=lambda x: x,
1257
variant_level=1,
1258
invalidate_only=False,
1259
_interface=_interface):
1260
""" Modify a variable so that it's a property which announces
1261
its changes to DBus.
1262
1263
transform_fun: Function that takes a value and a variant_level
1264
and transforms it to a D-Bus type.
1265
dbus_name: D-Bus name of the variable
1266
type_func: Function that transform the value before sending it
1267
to the D-Bus. Default: no transform
1268
variant_level: D-Bus variant level. Default: 1
1269
"""
1270
attrname = "_{}".format(dbus_name)
1271
1272
def setter(self, value):
1273
if hasattr(self, "dbus_object_path"):
1274
if (not hasattr(self, attrname) or
1275
type_func(getattr(self, attrname, None))
1276
!= type_func(value)):
1277
if invalidate_only:
1278
self.PropertiesChanged(
1279
_interface, dbus.Dictionary(),
1280
dbus.Array((dbus_name, )))
1281
else:
1282
dbus_value = transform_func(
1283
type_func(value),
1284
variant_level = variant_level)
1285
self.PropertyChanged(dbus.String(dbus_name),
1286
dbus_value)
1287
self.PropertiesChanged(
1288
_interface,
1289
dbus.Dictionary({ dbus.String(dbus_name):
1290
dbus_value }),
1291
dbus.Array())
1292
setattr(self, attrname, value)
1293
1294
return property(lambda self: getattr(self, attrname), setter)
1295
1296
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1297
approvals_pending = notifychangeproperty(dbus.Boolean,
1298
"ApprovalPending",
1299
type_func = bool)
1300
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1301
last_enabled = notifychangeproperty(datetime_to_dbus,
1302
"LastEnabled")
1303
checker = notifychangeproperty(
1304
dbus.Boolean, "CheckerRunning",
1305
type_func = lambda checker: checker is not None)
1306
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1307
"LastCheckedOK")
1308
last_checker_status = notifychangeproperty(dbus.Int16,
1309
"LastCheckerStatus")
1310
last_approval_request = notifychangeproperty(
1311
datetime_to_dbus, "LastApprovalRequest")
1312
approved_by_default = notifychangeproperty(dbus.Boolean,
1313
"ApprovedByDefault")
1314
approval_delay = notifychangeproperty(
1315
dbus.UInt64, "ApprovalDelay",
1316
type_func = lambda td: td.total_seconds() * 1000)
1317
approval_duration = notifychangeproperty(
1318
dbus.UInt64, "ApprovalDuration",
1319
type_func = lambda td: td.total_seconds() * 1000)
1320
host = notifychangeproperty(dbus.String, "Host")
1321
timeout = notifychangeproperty(
1322
dbus.UInt64, "Timeout",
1323
type_func = lambda td: td.total_seconds() * 1000)
1324
extended_timeout = notifychangeproperty(
1325
dbus.UInt64, "ExtendedTimeout",
1326
type_func = lambda td: td.total_seconds() * 1000)
1327
interval = notifychangeproperty(
1328
dbus.UInt64, "Interval",
1329
type_func = lambda td: td.total_seconds() * 1000)
1330
checker_command = notifychangeproperty(dbus.String, "Checker")
1331
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1332
invalidate_only=True)
1333
1334
del notifychangeproperty
739
740
def _get_approvals_pending(self):
741
return self._approvals_pending
742
def _set_approvals_pending(self, value):
743
old_value = self._approvals_pending
744
self._approvals_pending = value
745
bval = bool(value)
746
if (hasattr(self, "dbus_object_path")
747
and bval is not bool(old_value)):
748
dbus_bool = dbus.Boolean(bval, variant_level=1)
749
self.PropertyChanged(dbus.String("ApprovalPending"),
750
dbus_bool)
751
752
approvals_pending = property(_get_approvals_pending,
753
_set_approvals_pending)
754
del _get_approvals_pending, _set_approvals_pending
755
756
@staticmethod
757
def _datetime_to_dbus(dt, variant_level=0):
758
"""Convert a UTC datetime.datetime() to a D-Bus type."""
759
return dbus.String(dt.isoformat(),
760
variant_level=variant_level)
761
762
def enable(self):
763
oldstate = getattr(self, "enabled", False)
764
r = Client.enable(self)
765
if oldstate != self.enabled:
766
# Emit D-Bus signals
767
self.PropertyChanged(dbus.String("Enabled"),
768
dbus.Boolean(True, variant_level=1))
769
self.PropertyChanged(
770
dbus.String("LastEnabled"),
771
self._datetime_to_dbus(self.last_enabled,
772
variant_level=1))
773
return r
774
775
def disable(self, quiet = False):
776
oldstate = getattr(self, "enabled", False)
777
r = Client.disable(self, quiet=quiet)
778
if not quiet and oldstate != self.enabled:
779
# Emit D-Bus signal
780
self.PropertyChanged(dbus.String("Enabled"),
781
dbus.Boolean(False, variant_level=1))
782
return r
1335
783
1336
784
def __del__(self, *args, **kwargs):
1337
785
try:
1342
790
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1343
791
Client.__del__(self, *args, **kwargs)
1344
792
1345
def checker_callback(self, source, condition,
1346
(connection, command), *args, **kwargs):
1347
ret = Client.checker_callback(self, source, condition,
1348
(connection, command), *args,
1349
**kwargs)
1350
exitstatus = self.last_checker_status
1351
if exitstatus >= 0:
793
def checker_callback(self, pid, condition, command,
794
*args, **kwargs):
795
self.checker_callback_tag = None
796
self.checker = None
797
# Emit D-Bus signal
798
self.PropertyChanged(dbus.String("CheckerRunning"),
799
dbus.Boolean(False, variant_level=1))
800
if os.WIFEXITED(condition):
801
exitstatus = os.WEXITSTATUS(condition)
1352
802
# Emit D-Bus signal
1353
803
self.CheckerCompleted(dbus.Int16(exitstatus),
1354
dbus.Int64(0),
804
dbus.Int64(condition),
1355
805
dbus.String(command))
1356
806
else:
1357
807
# Emit D-Bus signal
1358
808
self.CheckerCompleted(dbus.Int16(-1),
1359
dbus.Int64(
1360
self.last_checker_signal),
809
dbus.Int64(condition),
1361
810
dbus.String(command))
1362
return ret
811
812
return Client.checker_callback(self, pid, condition, command,
813
*args, **kwargs)
814
815
def checked_ok(self, *args, **kwargs):
816
r = Client.checked_ok(self, *args, **kwargs)
817
# Emit D-Bus signal
818
self.PropertyChanged(
819
dbus.String("LastCheckedOK"),
820
(self._datetime_to_dbus(self.last_checked_ok,
821
variant_level=1)))
822
return r
823
824
def need_approval(self, *args, **kwargs):
825
r = Client.need_approval(self, *args, **kwargs)
826
# Emit D-Bus signal
827
self.PropertyChanged(
828
dbus.String("LastApprovalRequest"),
829
(self._datetime_to_dbus(self.last_approval_request,
830
variant_level=1)))
831
return r
1363
832
1364
833
def start_checker(self, *args, **kwargs):
1365
old_checker_pid = getattr(self.checker, "pid", None)
834
old_checker = self.checker
835
if self.checker is not None:
836
old_checker_pid = self.checker.pid
837
else:
838
old_checker_pid = None
1366
839
r = Client.start_checker(self, *args, **kwargs)
1367
840
# Only if new checker process was started
1368
841
if (self.checker is not None
1369
842
and old_checker_pid != self.checker.pid):
1370
843
# Emit D-Bus signal
1371
844
self.CheckerStarted(self.current_checker_command)
845
self.PropertyChanged(
846
dbus.String("CheckerRunning"),
847
dbus.Boolean(True, variant_level=1))
1372
848
return r
1373
849
850
def stop_checker(self, *args, **kwargs):
851
old_checker = getattr(self, "checker", None)
852
r = Client.stop_checker(self, *args, **kwargs)
853
if (old_checker is not None
854
and getattr(self, "checker", None) is None):
855
self.PropertyChanged(dbus.String("CheckerRunning"),
856
dbus.Boolean(False, variant_level=1))
857
return r
858
1374
859
def _reset_approved(self):
1375
self.approved = None
860
self._approved = None
1376
861
return False
1377
862
1378
863
def approve(self, value=True):
1379
self.approved = value
1380
gobject.timeout_add(int(self.approval_duration.total_seconds()
1381
* 1000), self._reset_approved)
1382
864
self.send_changedstate()
865
self._approved = value
866
gobject.timeout_add(self._timedelta_to_milliseconds
867
(self.approval_duration),
868
self._reset_approved)
869
1383
870
1384
871
## D-Bus methods, signals & properties
1385
1386
## Interfaces
872
_interface = "se.bsnet.fukt.Mandos.Client"
1387
873
1388
874
## Signals
1389
875
1400
886
pass
1401
887
1402
888
# PropertyChanged - signal
1403
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1404
889
@dbus.service.signal(_interface, signature="sv")
1405
890
def PropertyChanged(self, property, value):
1406
891
"D-Bus signal"
1437
922
# CheckedOK - method
1438
923
@dbus.service.method(_interface)
1439
924
def CheckedOK(self):
1440
self.checked_ok()
925
return self.checked_ok()
1441
926
1442
927
# Enable - method
1443
928
@dbus.service.method(_interface)
1470
955
return dbus.Boolean(bool(self.approvals_pending))
1471
956
1472
957
# ApprovedByDefault - property
1473
@dbus_service_property(_interface,
1474
signature="b",
958
@dbus_service_property(_interface, signature="b",
1475
959
access="readwrite")
1476
960
def ApprovedByDefault_dbus_property(self, value=None):
1477
961
if value is None: # get
1478
962
return dbus.Boolean(self.approved_by_default)
1479
963
self.approved_by_default = bool(value)
964
# Emit D-Bus signal
965
self.PropertyChanged(dbus.String("ApprovedByDefault"),
966
dbus.Boolean(value, variant_level=1))
1480
967
1481
968
# ApprovalDelay - property
1482
@dbus_service_property(_interface,
1483
signature="t",
969
@dbus_service_property(_interface, signature="t",
1484
970
access="readwrite")
1485
971
def ApprovalDelay_dbus_property(self, value=None):
1486
972
if value is None: # get
1487
return dbus.UInt64(self.approval_delay.total_seconds()
1488
* 1000)
973
return dbus.UInt64(self.approval_delay_milliseconds())
1489
974
self.approval_delay = datetime.timedelta(0, 0, 0, value)
975
# Emit D-Bus signal
976
self.PropertyChanged(dbus.String("ApprovalDelay"),
977
dbus.UInt64(value, variant_level=1))
1490
978
1491
979
# ApprovalDuration - property
1492
@dbus_service_property(_interface,
1493
signature="t",
980
@dbus_service_property(_interface, signature="t",
1494
981
access="readwrite")
1495
982
def ApprovalDuration_dbus_property(self, value=None):
1496
983
if value is None: # get
1497
return dbus.UInt64(self.approval_duration.total_seconds()
1498
* 1000)
984
return dbus.UInt64(self._timedelta_to_milliseconds(
985
self.approval_duration))
1499
986
self.approval_duration = datetime.timedelta(0, 0, 0, value)
987
# Emit D-Bus signal
988
self.PropertyChanged(dbus.String("ApprovalDuration"),
989
dbus.UInt64(value, variant_level=1))
1500
990
1501
991
# Name - property
1502
992
@dbus_service_property(_interface, signature="s", access="read")
1509
999
return dbus.String(self.fingerprint)
1510
1000
1511
1001
# Host - property
1512
@dbus_service_property(_interface,
1513
signature="s",
1002
@dbus_service_property(_interface, signature="s",
1514
1003
access="readwrite")
1515
1004
def Host_dbus_property(self, value=None):
1516
1005
if value is None: # get
1517
1006
return dbus.String(self.host)
1518
self.host = str(value)
1007
self.host = value
1008
# Emit D-Bus signal
1009
self.PropertyChanged(dbus.String("Host"),
1010
dbus.String(value, variant_level=1))
1519
1011
1520
1012
# Created - property
1521
1013
@dbus_service_property(_interface, signature="s", access="read")
1522
1014
def Created_dbus_property(self):
1523
return datetime_to_dbus(self.created)
1015
return dbus.String(self._datetime_to_dbus(self.created))
1524
1016
1525
1017
# LastEnabled - property
1526
1018
@dbus_service_property(_interface, signature="s", access="read")
1527
1019
def LastEnabled_dbus_property(self):
1528
return datetime_to_dbus(self.last_enabled)
1020
if self.last_enabled is None:
1021
return dbus.String("")
1022
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1529
1023
1530
1024
# Enabled - property
1531
@dbus_service_property(_interface,
1532
signature="b",
1025
@dbus_service_property(_interface, signature="b",
1533
1026
access="readwrite")
1534
1027
def Enabled_dbus_property(self, value=None):
1535
1028
if value is None: # get
1540
1033
self.disable()
1541
1034
1542
1035
# LastCheckedOK - property
1543
@dbus_service_property(_interface,
1544
signature="s",
1036
@dbus_service_property(_interface, signature="s",
1545
1037
access="readwrite")
1546
1038
def LastCheckedOK_dbus_property(self, value=None):
1547
1039
if value is not None:
1548
1040
self.checked_ok()
1549
1041
return
1550
return datetime_to_dbus(self.last_checked_ok)
1551
1552
# LastCheckerStatus - property
1553
@dbus_service_property(_interface, signature="n", access="read")
1554
def LastCheckerStatus_dbus_property(self):
1555
return dbus.Int16(self.last_checker_status)
1556
1557
# Expires - property
1558
@dbus_service_property(_interface, signature="s", access="read")
1559
def Expires_dbus_property(self):
1560
return datetime_to_dbus(self.expires)
1042
if self.last_checked_ok is None:
1043
return dbus.String("")
1044
return dbus.String(self._datetime_to_dbus(self
1045
.last_checked_ok))
1561
1046
1562
1047
# LastApprovalRequest - property
1563
1048
@dbus_service_property(_interface, signature="s", access="read")
1564
1049
def LastApprovalRequest_dbus_property(self):
1565
return datetime_to_dbus(self.last_approval_request)
1050
if self.last_approval_request is None:
1051
return dbus.String("")
1052
return dbus.String(self.
1053
_datetime_to_dbus(self
1054
.last_approval_request))
1566
1055
1567
1056
# Timeout - property
1568
@dbus_service_property(_interface,
1569
signature="t",
1057
@dbus_service_property(_interface, signature="t",
1570
1058
access="readwrite")
1571
1059
def Timeout_dbus_property(self, value=None):
1572
1060
if value is None: # get
1573
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1574
old_timeout = self.timeout
1061
return dbus.UInt64(self.timeout_milliseconds())
1575
1062
self.timeout = datetime.timedelta(0, 0, 0, value)
1576
# Reschedule disabling
1577
if self.enabled:
1578
now = datetime.datetime.utcnow()
1579
self.expires += self.timeout - old_timeout
1580
if self.expires <= now:
1581
# The timeout has passed
1582
self.disable()
1583
else:
1584
if (getattr(self, "disable_initiator_tag", None)
1585
is None):
1586
return
1587
gobject.source_remove(self.disable_initiator_tag)
1588
self.disable_initiator_tag = gobject.timeout_add(
1589
int((self.expires - now).total_seconds() * 1000),
1590
self.disable)
1591
1592
# ExtendedTimeout - property
1593
@dbus_service_property(_interface,
1594
signature="t",
1595
access="readwrite")
1596
def ExtendedTimeout_dbus_property(self, value=None):
1597
if value is None: # get
1598
return dbus.UInt64(self.extended_timeout.total_seconds()
1599
* 1000)
1600
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1063
# Emit D-Bus signal
1064
self.PropertyChanged(dbus.String("Timeout"),
1065
dbus.UInt64(value, variant_level=1))
1066
if getattr(self, "disable_initiator_tag", None) is None:
1067
return
1068
# Reschedule timeout
1069
gobject.source_remove(self.disable_initiator_tag)
1070
self.disable_initiator_tag = None
1071
time_to_die = (self.
1072
_timedelta_to_milliseconds((self
1073
.last_checked_ok
1074
+ self.timeout)
1075
- datetime.datetime
1076
.utcnow()))
1077
if time_to_die <= 0:
1078
# The timeout has passed
1079
self.disable()
1080
else:
1081
self.disable_initiator_tag = (gobject.timeout_add
1082
(time_to_die, self.disable))
1601
1083
1602
1084
# Interval - property
1603
@dbus_service_property(_interface,
1604
signature="t",
1085
@dbus_service_property(_interface, signature="t",
1605
1086
access="readwrite")
1606
1087
def Interval_dbus_property(self, value=None):
1607
1088
if value is None: # get
1608
return dbus.UInt64(self.interval.total_seconds() * 1000)
1089
return dbus.UInt64(self.interval_milliseconds())
1609
1090
self.interval = datetime.timedelta(0, 0, 0, value)
1091
# Emit D-Bus signal
1092
self.PropertyChanged(dbus.String("Interval"),
1093
dbus.UInt64(value, variant_level=1))
1610
1094
if getattr(self, "checker_initiator_tag", None) is None:
1611
1095
return
1612
if self.enabled:
1613
# Reschedule checker run
1614
gobject.source_remove(self.checker_initiator_tag)
1615
self.checker_initiator_tag = gobject.timeout_add(
1616
value, self.start_checker)
1617
self.start_checker() # Start one now, too
1618
1096
# Reschedule checker run
1097
gobject.source_remove(self.checker_initiator_tag)
1098
self.checker_initiator_tag = (gobject.timeout_add
1099
(value, self.start_checker))
1100
self.start_checker() # Start one now, too
1101
1619
1102
# Checker - property
1620
@dbus_service_property(_interface,
1621
signature="s",
1103
@dbus_service_property(_interface, signature="s",
1622
1104
access="readwrite")
1623
1105
def Checker_dbus_property(self, value=None):
1624
1106
if value is None: # get
1625
1107
return dbus.String(self.checker_command)
1626
self.checker_command = str(value)
1108
self.checker_command = value
1109
# Emit D-Bus signal
1110
self.PropertyChanged(dbus.String("Checker"),
1111
dbus.String(self.checker_command,
1112
variant_level=1))
1627
1113
1628
1114
# CheckerRunning - property
1629
@dbus_service_property(_interface,
1630
signature="b",
1115
@dbus_service_property(_interface, signature="b",
1631
1116
access="readwrite")
1632
1117
def CheckerRunning_dbus_property(self, value=None):
1633
1118
if value is None: # get
1643
1128
return self.dbus_object_path # is already a dbus.ObjectPath
1644
1129
1645
1130
# Secret = property
1646
@dbus_service_property(_interface,
1647
signature="ay",
1648
access="write",
1649
byte_arrays=True)
1131
@dbus_service_property(_interface, signature="ay",
1132
access="write", byte_arrays=True)
1650
1133
def Secret_dbus_property(self, value):
1651
self.secret = bytes(value)
1134
self.secret = str(value)
1652
1135
1653
1136
del _interface
1654
1137
1659
1142
self._pipe.send(('init', fpr, address))
1660
1143
if not self._pipe.recv():
1661
1144
raise KeyError()
1662
1145
1663
1146
def __getattribute__(self, name):
1664
if name == '_pipe':
1147
if(name == '_pipe'):
1665
1148
return super(ProxyClient, self).__getattribute__(name)
1666
1149
self._pipe.send(('getattr', name))
1667
1150
data = self._pipe.recv()
1668
1151
if data[0] == 'data':
1669
1152
return data[1]
1670
1153
if data[0] == 'function':
1671
1672
1154
def func(*args, **kwargs):
1673
1155
self._pipe.send(('funcall', name, args, kwargs))
1674
1156
return self._pipe.recv()[1]
1675
1676
1157
return func
1677
1158
1678
1159
def __setattr__(self, name, value):
1679
if name == '_pipe':
1160
if(name == '_pipe'):
1680
1161
return super(ProxyClient, self).__setattr__(name, value)
1681
1162
self._pipe.send(('setattr', name, value))
1682
1163
1690
1171
def handle(self):
1691
1172
with contextlib.closing(self.server.child_pipe) as child_pipe:
1692
1173
logger.info("TCP connection from: %s",
1693
str(self.client_address))
1174
unicode(self.client_address))
1694
1175
logger.debug("Pipe FD: %d",
1695
1176
self.server.child_pipe.fileno())
1696
1697
session = gnutls.connection.ClientSession(
1698
self.request, gnutls.connection .X509Credentials())
1699
1177
1178
session = (gnutls.connection
1179
.ClientSession(self.request,
1180
gnutls.connection
1181
.X509Credentials()))
1182
1700
1183
# Note: gnutls.connection.X509Credentials is really a
1701
1184
# generic GnuTLS certificate credentials object so long as
1702
1185
# no X.509 keys are added to it. Therefore, we can use it
1703
1186
# here despite using OpenPGP certificates.
1704
1187
1705
1188
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1706
1189
# "+AES-256-CBC", "+SHA1",
1707
1190
# "+COMP-NULL", "+CTYPE-OPENPGP",
1710
1193
priority = self.server.gnutls_priority
1711
1194
if priority is None:
1712
1195
priority = "NORMAL"
1713
gnutls.library.functions.gnutls_priority_set_direct(
1714
session._c_object, priority, None)
1715
1196
(gnutls.library.functions
1197
.gnutls_priority_set_direct(session._c_object,
1198
priority, None))
1199
1716
1200
# Start communication using the Mandos protocol
1717
1201
# Get protocol number
1718
1202
line = self.request.makefile().readline()
1719
1203
logger.debug("Protocol version: %r", line)
1720
1204
try:
1721
1205
if int(line.strip().split()[0]) > 1:
1722
raise RuntimeError(line)
1723
except (ValueError, IndexError, RuntimeError) as error:
1206
raise RuntimeError
1207
except (ValueError, IndexError, RuntimeError), error:
1724
1208
logger.error("Unknown protocol version: %s", error)
1725
1209
return
1726
1210
1727
1211
# Start GnuTLS connection
1728
1212
try:
1729
1213
session.handshake()
1730
except gnutls.errors.GNUTLSError as error:
1214
except gnutls.errors.GNUTLSError, error:
1731
1215
logger.warning("Handshake failed: %s", error)
1732
1216
# Do not run session.bye() here: the session is not
1733
1217
# established. Just abandon the request.
1734
1218
return
1735
1219
logger.debug("Handshake succeeded")
1736
1220
1737
1221
approval_required = False
1738
1222
try:
1739
1223
try:
1740
fpr = self.fingerprint(
1741
self.peer_certificate(session))
1742
except (TypeError,
1743
gnutls.errors.GNUTLSError) as error:
1224
fpr = self.fingerprint(self.peer_certificate
1225
(session))
1226
except (TypeError, gnutls.errors.GNUTLSError), error:
1744
1227
logger.warning("Bad certificate: %s", error)
1745
1228
return
1746
1229
logger.debug("Fingerprint: %s", fpr)
1747
1230
1748
1231
try:
1749
1232
client = ProxyClient(child_pipe, fpr,
1750
1233
self.client_address)
1758
1241
1759
1242
while True:
1760
1243
if not client.enabled:
1761
logger.info("Client %s is disabled",
1762
client.name)
1244
logger.warning("Client %s is disabled",
1245
client.name)
1763
1246
if self.server.use_dbus:
1764
1247
# Emit D-Bus signal
1765
client.Rejected("Disabled")
1248
client.Rejected("Disabled")
1766
1249
return
1767
1250
1768
if client.approved or not client.approval_delay:
1251
if client._approved or not client.approval_delay:
1769
1252
#We are approved or approval is disabled
1770
1253
break
1771
elif client.approved is None:
1254
elif client._approved is None:
1772
1255
logger.info("Client %s needs approval",
1773
1256
client.name)
1774
1257
if self.server.use_dbus:
1775
1258
# Emit D-Bus signal
1776
1259
client.NeedApproval(
1777
client.approval_delay.total_seconds()
1778
* 1000, client.approved_by_default)
1260
client.approval_delay_milliseconds(),
1261
client.approved_by_default)
1779
1262
else:
1780
1263
logger.warning("Client %s was not approved",
1781
1264
client.name)
1785
1268
return
1786
1269
1787
1270
#wait until timeout or approved
1271
#x = float(client._timedelta_to_milliseconds(delay))
1788
1272
time = datetime.datetime.now()
1789
1273
client.changedstate.acquire()
1790
client.changedstate.wait(delay.total_seconds())
1274
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
1791
1275
client.changedstate.release()
1792
1276
time2 = datetime.datetime.now()
1793
1277
if (time2 - time) >= delay:
1808
1292
while sent_size < len(client.secret):
1809
1293
try:
1810
1294
sent = session.send(client.secret[sent_size:])
1811
except gnutls.errors.GNUTLSError as error:
1812
logger.warning("gnutls send failed",
1813
exc_info=error)
1295
except (gnutls.errors.GNUTLSError), error:
1296
logger.warning("gnutls send failed")
1814
1297
return
1815
logger.debug("Sent: %d, remaining: %d", sent,
1816
len(client.secret) - (sent_size
1817
+ sent))
1298
logger.debug("Sent: %d, remaining: %d",
1299
sent, len(client.secret)
1300
- (sent_size + sent))
1818
1301
sent_size += sent
1819
1302
1820
1303
logger.info("Sending secret to %s", client.name)
1821
# bump the timeout using extended_timeout
1822
client.bump_timeout(client.extended_timeout)
1304
# bump the timeout as if seen
1305
client.checked_ok()
1823
1306
if self.server.use_dbus:
1824
1307
# Emit D-Bus signal
1825
1308
client.GotSecret()
1829
1312
client.approvals_pending -= 1
1830
1313
try:
1831
1314
session.bye()
1832
except gnutls.errors.GNUTLSError as error:
1833
logger.warning("GnuTLS bye failed",
1834
exc_info=error)
1315
except (gnutls.errors.GNUTLSError), error:
1316
logger.warning("GnuTLS bye failed")
1835
1317
1836
1318
@staticmethod
1837
1319
def peer_certificate(session):
1838
1320
"Return the peer's OpenPGP certificate as a bytestring"
1839
1321
# If not an OpenPGP certificate...
1840
if (gnutls.library.functions.gnutls_certificate_type_get(
1841
session._c_object)
1322
if (gnutls.library.functions
1323
.gnutls_certificate_type_get(session._c_object)
1842
1324
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1843
1325
# ...do the normal thing
1844
1326
return session.peer_certificate
1858
1340
def fingerprint(openpgp):
1859
1341
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1860
1342
# New GnuTLS "datum" with the OpenPGP public key
1861
datum = gnutls.library.types.gnutls_datum_t(
1862
ctypes.cast(ctypes.c_char_p(openpgp),
1863
ctypes.POINTER(ctypes.c_ubyte)),
1864
ctypes.c_uint(len(openpgp)))
1343
datum = (gnutls.library.types
1344
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1345
ctypes.POINTER
1346
(ctypes.c_ubyte)),
1347
ctypes.c_uint(len(openpgp))))
1865
1348
# New empty GnuTLS certificate
1866
1349
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1867
gnutls.library.functions.gnutls_openpgp_crt_init(
1868
ctypes.byref(crt))
1350
(gnutls.library.functions
1351
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1869
1352
# Import the OpenPGP public key into the certificate
1870
gnutls.library.functions.gnutls_openpgp_crt_import(
1871
crt, ctypes.byref(datum),
1872
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
1353
(gnutls.library.functions
1354
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1355
gnutls.library.constants
1356
.GNUTLS_OPENPGP_FMT_RAW))
1873
1357
# Verify the self signature in the key
1874
1358
crtverify = ctypes.c_uint()
1875
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1876
crt, 0, ctypes.byref(crtverify))
1359
(gnutls.library.functions
1360
.gnutls_openpgp_crt_verify_self(crt, 0,
1361
ctypes.byref(crtverify)))
1877
1362
if crtverify.value != 0:
1878
1363
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1879
raise gnutls.errors.CertificateSecurityError(
1880
"Verify failed")
1364
raise (gnutls.errors.CertificateSecurityError
1365
("Verify failed"))
1881
1366
# New buffer for the fingerprint
1882
1367
buf = ctypes.create_string_buffer(20)
1883
1368
buf_len = ctypes.c_size_t()
1884
1369
# Get the fingerprint from the certificate into the buffer
1885
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1886
crt, ctypes.byref(buf), ctypes.byref(buf_len))
1370
(gnutls.library.functions
1371
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1372
ctypes.byref(buf_len)))
1887
1373
# Deinit the certificate
1888
1374
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1889
1375
# Convert the buffer to a Python bytestring
1890
1376
fpr = ctypes.string_at(buf, buf_len.value)
1891
1377
# Convert the bytestring to hexadecimal notation
1892
hex_fpr = binascii.hexlify(fpr).upper()
1378
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
1893
1379
return hex_fpr
1894
1380
1895
1381
1896
1382
class MultiprocessingMixIn(object):
1897
1383
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1898
1899
1384
def sub_process_main(self, request, address):
1900
1385
try:
1901
1386
self.finish_request(request, address)
1902
except Exception:
1387
except:
1903
1388
self.handle_error(request, address)
1904
1389
self.close_request(request)
1905
1390
1906
1391
def process_request(self, request, address):
1907
1392
"""Start a new process to process the request."""
1908
proc = multiprocessing.Process(target = self.sub_process_main,
1909
args = (request, address))
1910
proc.start()
1911
return proc
1912
1393
multiprocessing.Process(target = self.sub_process_main,
1394
args = (request, address)).start()
1913
1395
1914
1396
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1915
1397
""" adds a pipe to the MixIn """
1916
1917
1398
def process_request(self, request, client_address):
1918
1399
"""Overrides and wraps the original process_request().
1919
1400
1920
1401
This function creates a new pipe in self.pipe
1921
1402
"""
1922
1403
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1923
1924
proc = MultiprocessingMixIn.process_request(self, request,
1925
client_address)
1404
1405
super(MultiprocessingMixInWithPipe,
1406
self).process_request(request, client_address)
1926
1407
self.child_pipe.close()
1927
self.add_pipe(parent_pipe, proc)
1928
1929
def add_pipe(self, parent_pipe, proc):
1408
self.add_pipe(parent_pipe)
1409
1410
def add_pipe(self, parent_pipe):
1930
1411
"""Dummy function; override as necessary"""
1931
raise NotImplementedError()
1932
1412
raise NotImplementedError
1933
1413
1934
1414
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1935
1415
socketserver.TCPServer, object):
1940
1420
interface: None or a network interface name (string)
1941
1421
use_ipv6: Boolean; to use IPv6 or not
1942
1422
"""
1943
1944
1423
def __init__(self, server_address, RequestHandlerClass,
1945
interface=None,
1946
use_ipv6=True,
1947
socketfd=None):
1948
"""If socketfd is set, use that file descriptor instead of
1949
creating a new one with socket.socket().
1950
"""
1424
interface=None, use_ipv6=True):
1951
1425
self.interface = interface
1952
1426
if use_ipv6:
1953
1427
self.address_family = socket.AF_INET6
1954
if socketfd is not None:
1955
# Save the file descriptor
1956
self.socketfd = socketfd
1957
# Save the original socket.socket() function
1958
self.socket_socket = socket.socket
1959
# To implement --socket, we monkey patch socket.socket.
1960
#
1961
# (When socketserver.TCPServer is a new-style class, we
1962
# could make self.socket into a property instead of monkey
1963
# patching socket.socket.)
1964
#
1965
# Create a one-time-only replacement for socket.socket()
1966
@functools.wraps(socket.socket)
1967
def socket_wrapper(*args, **kwargs):
1968
# Restore original function so subsequent calls are
1969
# not affected.
1970
socket.socket = self.socket_socket
1971
del self.socket_socket
1972
# This time only, return a new socket object from the
1973
# saved file descriptor.
1974
return socket.fromfd(self.socketfd, *args, **kwargs)
1975
# Replace socket.socket() function with wrapper
1976
socket.socket = socket_wrapper
1977
# The socketserver.TCPServer.__init__ will call
1978
# socket.socket(), which might be our replacement,
1979
# socket_wrapper(), if socketfd was set.
1980
1428
socketserver.TCPServer.__init__(self, server_address,
1981
1429
RequestHandlerClass)
1982
1983
1430
def server_bind(self):
1984
1431
"""This overrides the normal server_bind() function
1985
1432
to bind to an interface if one was specified, and also NOT to
1991
1438
self.interface)
1992
1439
else:
1993
1440
try:
1994
self.socket.setsockopt(
1995
socket.SOL_SOCKET, SO_BINDTODEVICE,
1996
(self.interface + "\0").encode("utf-8"))
1997
except socket.error as error:
1998
if error.errno == errno.EPERM:
1999
logger.error("No permission to bind to"
2000
" interface %s", self.interface)
2001
elif error.errno == errno.ENOPROTOOPT:
1441
self.socket.setsockopt(socket.SOL_SOCKET,
1442
SO_BINDTODEVICE,
1443
str(self.interface
1444
+ '\0'))
1445
except socket.error, error:
1446
if error[0] == errno.EPERM:
1447
logger.error("No permission to"
1448
" bind to interface %s",
1449
self.interface)
1450
elif error[0] == errno.ENOPROTOOPT:
2002
1451
logger.error("SO_BINDTODEVICE not available;"
2003
1452
" cannot bind to interface %s",
2004
1453
self.interface)
2005
elif error.errno == errno.ENODEV:
2006
logger.error("Interface %s does not exist,"
2007
" cannot bind", self.interface)
2008
1454
else:
2009
1455
raise
2010
1456
# Only bind(2) the socket if we really need to.
2013
1459
if self.address_family == socket.AF_INET6:
2014
1460
any_address = "::" # in6addr_any
2015
1461
else:
2016
any_address = "0.0.0.0" # INADDR_ANY
1462
any_address = socket.INADDR_ANY
2017
1463
self.server_address = (any_address,
2018
1464
self.server_address[1])
2019
1465
elif not self.server_address[1]:
2020
self.server_address = (self.server_address[0], 0)
1466
self.server_address = (self.server_address[0],
1467
0)
2021
1468
# if self.interface:
2022
1469
# self.server_address = (self.server_address[0],
2023
1470
# 0, # port
2037
1484
2038
1485
Assumes a gobject.MainLoop event loop.
2039
1486
"""
2040
2041
1487
def __init__(self, server_address, RequestHandlerClass,
2042
interface=None,
2043
use_ipv6=True,
2044
clients=None,
2045
gnutls_priority=None,
2046
use_dbus=True,
2047
socketfd=None):
1488
interface=None, use_ipv6=True, clients=None,
1489
gnutls_priority=None, use_dbus=True):
2048
1490
self.enabled = False
2049
1491
self.clients = clients
2050
1492
if self.clients is None:
2051
self.clients = {}
1493
self.clients = set()
2052
1494
self.use_dbus = use_dbus
2053
1495
self.gnutls_priority = gnutls_priority
2054
1496
IPv6_TCPServer.__init__(self, server_address,
2055
1497
RequestHandlerClass,
2056
1498
interface = interface,
2057
use_ipv6 = use_ipv6,
2058
socketfd = socketfd)
2059
1499
use_ipv6 = use_ipv6)
2060
1500
def server_activate(self):
2061
1501
if self.enabled:
2062
1502
return socketserver.TCPServer.server_activate(self)
2063
2064
1503
def enable(self):
2065
1504
self.enabled = True
2066
2067
def add_pipe(self, parent_pipe, proc):
1505
def add_pipe(self, parent_pipe):
2068
1506
# Call "handle_ipc" for both data and EOF events
2069
gobject.io_add_watch(
2070
parent_pipe.fileno(),
2071
gobject.IO_IN | gobject.IO_HUP,
2072
functools.partial(self.handle_ipc,
2073
parent_pipe = parent_pipe,
2074
proc = proc))
2075
2076
def handle_ipc(self, source, condition,
2077
parent_pipe=None,
2078
proc = None,
1507
gobject.io_add_watch(parent_pipe.fileno(),
1508
gobject.IO_IN | gobject.IO_HUP,
1509
functools.partial(self.handle_ipc,
1510
parent_pipe = parent_pipe))
1511
1512
def handle_ipc(self, source, condition, parent_pipe=None,
2079
1513
client_object=None):
2080
# error, or the other end of multiprocessing.Pipe has closed
2081
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2082
# Wait for other process to exit
2083
proc.join()
1514
condition_names = {
1515
gobject.IO_IN: "IN", # There is data to read.
1516
gobject.IO_OUT: "OUT", # Data can be written (without
1517
# blocking).
1518
gobject.IO_PRI: "PRI", # There is urgent data to read.
1519
gobject.IO_ERR: "ERR", # Error condition.
1520
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1521
# broken, usually for pipes and
1522
# sockets).
1523
}
1524
conditions_string = ' | '.join(name
1525
for cond, name in
1526
condition_names.iteritems()
1527
if cond & condition)
1528
# error or the other end of multiprocessing.Pipe has closed
1529
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2084
1530
return False
2085
1531
2086
1532
# Read a request from the child
2091
1537
fpr = request[1]
2092
1538
address = request[2]
2093
1539
2094
for c in self.clients.itervalues():
1540
for c in self.clients:
2095
1541
if c.fingerprint == fpr:
2096
1542
client = c
2097
1543
break
2098
1544
else:
2099
logger.info("Client not found for fingerprint: %s, ad"
2100
"dress: %s", fpr, address)
1545
logger.warning("Client not found for fingerprint: %s, ad"
1546
"dress: %s", fpr, address)
2101
1547
if self.use_dbus:
2102
1548
# Emit D-Bus signal
2103
mandos_dbus_service.ClientNotFound(fpr,
2104
address[0])
1549
mandos_dbus_service.ClientNotFound(fpr, address[0])
2105
1550
parent_pipe.send(False)
2106
1551
return False
2107
1552
2108
gobject.io_add_watch(
2109
parent_pipe.fileno(),
2110
gobject.IO_IN | gobject.IO_HUP,
2111
functools.partial(self.handle_ipc,
2112
parent_pipe = parent_pipe,
2113
proc = proc,
2114
client_object = client))
1553
gobject.io_add_watch(parent_pipe.fileno(),
1554
gobject.IO_IN | gobject.IO_HUP,
1555
functools.partial(self.handle_ipc,
1556
parent_pipe = parent_pipe,
1557
client_object = client))
2115
1558
parent_pipe.send(True)
2116
# remove the old hook in favor of the new above hook on
2117
# same fileno
1559
# remove the old hook in favor of the new above hook on same fileno
2118
1560
return False
2119
1561
if command == 'funcall':
2120
1562
funcname = request[1]
2121
1563
args = request[2]
2122
1564
kwargs = request[3]
2123
1565
2124
parent_pipe.send(('data', getattr(client_object,
2125
funcname)(*args,
2126
**kwargs)))
2127
1566
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1567
2128
1568
if command == 'getattr':
2129
1569
attrname = request[1]
2130
1570
if callable(client_object.__getattribute__(attrname)):
2131
parent_pipe.send(('function', ))
1571
parent_pipe.send(('function',))
2132
1572
else:
2133
parent_pipe.send((
2134
'data', client_object.__getattribute__(attrname)))
1573
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2135
1574
2136
1575
if command == 'setattr':
2137
1576
attrname = request[1]
2138
1577
value = request[2]
2139
1578
setattr(client_object, attrname, value)
2140
1579
2141
1580
return True
2142
1581
2143
1582
2144
def rfc3339_duration_to_delta(duration):
2145
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2146
2147
>>> rfc3339_duration_to_delta("P7D")
2148
datetime.timedelta(7)
2149
>>> rfc3339_duration_to_delta("PT60S")
2150
datetime.timedelta(0, 60)
2151
>>> rfc3339_duration_to_delta("PT60M")
2152
datetime.timedelta(0, 3600)
2153
>>> rfc3339_duration_to_delta("PT24H")
2154
datetime.timedelta(1)
2155
>>> rfc3339_duration_to_delta("P1W")
2156
datetime.timedelta(7)
2157
>>> rfc3339_duration_to_delta("PT5M30S")
2158
datetime.timedelta(0, 330)
2159
>>> rfc3339_duration_to_delta("P1DT3M20S")
2160
datetime.timedelta(1, 200)
2161
"""
2162
2163
# Parsing an RFC 3339 duration with regular expressions is not
2164
# possible - there would have to be multiple places for the same
2165
# values, like seconds. The current code, while more esoteric, is
2166
# cleaner without depending on a parsing library. If Python had a
2167
# built-in library for parsing we would use it, but we'd like to
2168
# avoid excessive use of external libraries.
2169
2170
# New type for defining tokens, syntax, and semantics all-in-one
2171
Token = collections.namedtuple("Token",
2172
("regexp", # To match token; if
2173
# "value" is not None,
2174
# must have a "group"
2175
# containing digits
2176
"value", # datetime.timedelta or
2177
# None
2178
"followers")) # Tokens valid after
2179
# this token
2180
Token = collections.namedtuple("Token", (
2181
"regexp", # To match token; if "value" is not None, must have
2182
# a "group" containing digits
2183
"value", # datetime.timedelta or None
2184
"followers")) # Tokens valid after this token
2185
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2186
# the "duration" ABNF definition in RFC 3339, Appendix A.
2187
token_end = Token(re.compile(r"$"), None, frozenset())
2188
token_second = Token(re.compile(r"(\d+)S"),
2189
datetime.timedelta(seconds=1),
2190
frozenset((token_end, )))
2191
token_minute = Token(re.compile(r"(\d+)M"),
2192
datetime.timedelta(minutes=1),
2193
frozenset((token_second, token_end)))
2194
token_hour = Token(re.compile(r"(\d+)H"),
2195
datetime.timedelta(hours=1),
2196
frozenset((token_minute, token_end)))
2197
token_time = Token(re.compile(r"T"),
2198
None,
2199
frozenset((token_hour, token_minute,
2200
token_second)))
2201
token_day = Token(re.compile(r"(\d+)D"),
2202
datetime.timedelta(days=1),
2203
frozenset((token_time, token_end)))
2204
token_month = Token(re.compile(r"(\d+)M"),
2205
datetime.timedelta(weeks=4),
2206
frozenset((token_day, token_end)))
2207
token_year = Token(re.compile(r"(\d+)Y"),
2208
datetime.timedelta(weeks=52),
2209
frozenset((token_month, token_end)))
2210
token_week = Token(re.compile(r"(\d+)W"),
2211
datetime.timedelta(weeks=1),
2212
frozenset((token_end, )))
2213
token_duration = Token(re.compile(r"P"), None,
2214
frozenset((token_year, token_month,
2215
token_day, token_time,
2216
token_week)))
2217
# Define starting values
2218
value = datetime.timedelta() # Value so far
2219
found_token = None
2220
followers = frozenset((token_duration,)) # Following valid tokens
2221
s = duration # String left to parse
2222
# Loop until end token is found
2223
while found_token is not token_end:
2224
# Search for any currently valid tokens
2225
for token in followers:
2226
match = token.regexp.match(s)
2227
if match is not None:
2228
# Token found
2229
if token.value is not None:
2230
# Value found, parse digits
2231
factor = int(match.group(1), 10)
2232
# Add to value so far
2233
value += factor * token.value
2234
# Strip token from string
2235
s = token.regexp.sub("", s, 1)
2236
# Go to found token
2237
found_token = token
2238
# Set valid next tokens
2239
followers = found_token.followers
2240
break
2241
else:
2242
# No currently valid tokens were found
2243
raise ValueError("Invalid RFC 3339 duration")
2244
# End token found
2245
return value
2246
2247
2248
1583
def string_to_delta(interval):
2249
1584
"""Parse a string and return a datetime.timedelta
2250
1585
2261
1596
>>> string_to_delta('5m 30s')
2262
1597
datetime.timedelta(0, 330)
2263
1598
"""
2264
2265
try:
2266
return rfc3339_duration_to_delta(interval)
2267
except ValueError:
2268
pass
2269
2270
1599
timevalue = datetime.timedelta(0)
2271
1600
for s in interval.split():
2272
1601
try:
2273
suffix = s[-1]
1602
suffix = unicode(s[-1])
2274
1603
value = int(s[:-1])
2275
1604
if suffix == "d":
2276
1605
delta = datetime.timedelta(value)
2283
1612
elif suffix == "w":
2284
1613
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2285
1614
else:
2286
raise ValueError("Unknown suffix {!r}".format(suffix))
2287
except IndexError as e:
1615
raise ValueError("Unknown suffix %r" % suffix)
1616
except (ValueError, IndexError), e:
2288
1617
raise ValueError(*(e.args))
2289
1618
timevalue += delta
2290
1619
return timevalue
2291
1620
2292
1621
1622
def if_nametoindex(interface):
1623
"""Call the C function if_nametoindex(), or equivalent
1624
1625
Note: This function cannot accept a unicode string."""
1626
global if_nametoindex
1627
try:
1628
if_nametoindex = (ctypes.cdll.LoadLibrary
1629
(ctypes.util.find_library("c"))
1630
.if_nametoindex)
1631
except (OSError, AttributeError):
1632
logger.warning("Doing if_nametoindex the hard way")
1633
def if_nametoindex(interface):
1634
"Get an interface index the hard way, i.e. using fcntl()"
1635
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1636
with contextlib.closing(socket.socket()) as s:
1637
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1638
struct.pack(str("16s16x"),
1639
interface))
1640
interface_index = struct.unpack(str("I"),
1641
ifreq[16:20])[0]
1642
return interface_index
1643
return if_nametoindex(interface)
1644
1645
2293
1646
def daemon(nochdir = False, noclose = False):
2294
1647
"""See daemon(3). Standard BSD Unix function.
2295
1648
2303
1656
sys.exit()
2304
1657
if not noclose:
2305
1658
# Close all standard open file descriptors
2306
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1659
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2307
1660
if not stat.S_ISCHR(os.fstat(null).st_mode):
2308
1661
raise OSError(errno.ENODEV,
2309
"{} not a character device"
2310
.format(os.devnull))
1662
"%s not a character device"
1663
% os.path.devnull)
2311
1664
os.dup2(null, sys.stdin.fileno())
2312
1665
os.dup2(null, sys.stdout.fileno())
2313
1666
os.dup2(null, sys.stderr.fileno())
2320
1673
##################################################################
2321
1674
# Parsing of options, both command line and config file
2322
1675
2323
parser = argparse.ArgumentParser()
2324
parser.add_argument("-v", "--version", action="version",
2325
version = "%(prog)s {}".format(version),
2326
help="show version number and exit")
2327
parser.add_argument("-i", "--interface", metavar="IF",
2328
help="Bind to interface IF")
2329
parser.add_argument("-a", "--address",
2330
help="Address to listen for requests on")
2331
parser.add_argument("-p", "--port", type=int,
2332
help="Port number to receive requests on")
2333
parser.add_argument("--check", action="store_true",
2334
help="Run self-test")
2335
parser.add_argument("--debug", action="store_true",
2336
help="Debug mode; run in foreground and log"
2337
" to terminal", default=None)
2338
parser.add_argument("--debuglevel", metavar="LEVEL",
2339
help="Debug level for stdout output")
2340
parser.add_argument("--priority", help="GnuTLS"
2341
" priority string (see GnuTLS documentation)")
2342
parser.add_argument("--servicename",
2343
metavar="NAME", help="Zeroconf service name")
2344
parser.add_argument("--configdir",
2345
default="/etc/mandos", metavar="DIR",
2346
help="Directory to search for configuration"
2347
" files")
2348
parser.add_argument("--no-dbus", action="store_false",
2349
dest="use_dbus", help="Do not provide D-Bus"
2350
" system bus interface", default=None)
2351
parser.add_argument("--no-ipv6", action="store_false",
2352
dest="use_ipv6", help="Do not use IPv6",
2353
default=None)
2354
parser.add_argument("--no-restore", action="store_false",
2355
dest="restore", help="Do not restore stored"
2356
" state", default=None)
2357
parser.add_argument("--socket", type=int,
2358
help="Specify a file descriptor to a network"
2359
" socket to use instead of creating one")
2360
parser.add_argument("--statedir", metavar="DIR",
2361
help="Directory to save/restore state in")
2362
parser.add_argument("--foreground", action="store_true",
2363
help="Run in foreground", default=None)
2364
parser.add_argument("--no-zeroconf", action="store_false",
2365
dest="zeroconf", help="Do not use Zeroconf",
2366
default=None)
2367
2368
options = parser.parse_args()
1676
parser = optparse.OptionParser(version = "%%prog %s" % version)
1677
parser.add_option("-i", "--interface", type="string",
1678
metavar="IF", help="Bind to interface IF")
1679
parser.add_option("-a", "--address", type="string",
1680
help="Address to listen for requests on")
1681
parser.add_option("-p", "--port", type="int",
1682
help="Port number to receive requests on")
1683
parser.add_option("--check", action="store_true",
1684
help="Run self-test")
1685
parser.add_option("--debug", action="store_true",
1686
help="Debug mode; run in foreground and log to"
1687
" terminal")
1688
parser.add_option("--debuglevel", type="string", metavar="LEVEL",
1689
help="Debug level for stdout output")
1690
parser.add_option("--priority", type="string", help="GnuTLS"
1691
" priority string (see GnuTLS documentation)")
1692
parser.add_option("--servicename", type="string",
1693
metavar="NAME", help="Zeroconf service name")
1694
parser.add_option("--configdir", type="string",
1695
default="/etc/mandos", metavar="DIR",
1696
help="Directory to search for configuration"
1697
" files")
1698
parser.add_option("--no-dbus", action="store_false",
1699
dest="use_dbus", help="Do not provide D-Bus"
1700
" system bus interface")
1701
parser.add_option("--no-ipv6", action="store_false",
1702
dest="use_ipv6", help="Do not use IPv6")
1703
options = parser.parse_args()[0]
2369
1704
2370
1705
if options.check:
2371
1706
import doctest
2372
fail_count, test_count = doctest.testmod()
2373
sys.exit(os.EX_OK if fail_count == 0 else 1)
1707
doctest.testmod()
1708
sys.exit()
2374
1709
2375
1710
# Default values for config file for server-global settings
2376
1711
server_defaults = { "interface": "",
2378
1713
"port": "",
2379
1714
"debug": "False",
2380
1715
"priority":
2381
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2382
":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
1716
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2383
1717
"servicename": "Mandos",
2384
1718
"use_dbus": "True",
2385
1719
"use_ipv6": "True",
2386
1720
"debuglevel": "",
2387
"restore": "True",
2388
"socket": "",
2389
"statedir": "/var/lib/mandos",
2390
"foreground": "False",
2391
"zeroconf": "True",
2392
}
1721
}
2393
1722
2394
1723
# Parse config file for server-global settings
2395
1724
server_config = configparser.SafeConfigParser(server_defaults)
2396
1725
del server_defaults
2397
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1726
server_config.read(os.path.join(options.configdir,
1727
"mandos.conf"))
2398
1728
# Convert the SafeConfigParser object to a dict
2399
1729
server_settings = server_config.defaults()
2400
1730
# Use the appropriate methods on the non-string config options
2401
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1731
for option in ("debug", "use_dbus", "use_ipv6"):
2402
1732
server_settings[option] = server_config.getboolean("DEFAULT",
2403
1733
option)
2404
1734
if server_settings["port"]:
2405
1735
server_settings["port"] = server_config.getint("DEFAULT",
2406
1736
"port")
2407
if server_settings["socket"]:
2408
server_settings["socket"] = server_config.getint("DEFAULT",
2409
"socket")
2410
# Later, stdin will, and stdout and stderr might, be dup'ed
2411
# over with an opened os.devnull. But we don't want this to
2412
# happen with a supplied network socket.
2413
if 0 <= server_settings["socket"] <= 2:
2414
server_settings["socket"] = os.dup(server_settings
2415
["socket"])
2416
1737
del server_config
2417
1738
2418
1739
# Override the settings from the config file with command line
2419
1740
# options, if set.
2420
1741
for option in ("interface", "address", "port", "debug",
2421
"priority", "servicename", "configdir", "use_dbus",
2422
"use_ipv6", "debuglevel", "restore", "statedir",
2423
"socket", "foreground", "zeroconf"):
1742
"priority", "servicename", "configdir",
1743
"use_dbus", "use_ipv6", "debuglevel"):
2424
1744
value = getattr(options, option)
2425
1745
if value is not None:
2426
1746
server_settings[option] = value
2427
1747
del options
2428
1748
# Force all strings to be unicode
2429
1749
for option in server_settings.keys():
2430
if isinstance(server_settings[option], bytes):
2431
server_settings[option] = (server_settings[option]
2432
.decode("utf-8"))
2433
# Force all boolean options to be boolean
2434
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2435
"foreground", "zeroconf"):
2436
server_settings[option] = bool(server_settings[option])
2437
# Debug implies foreground
2438
if server_settings["debug"]:
2439
server_settings["foreground"] = True
1750
if type(server_settings[option]) is str:
1751
server_settings[option] = unicode(server_settings[option])
2440
1752
# Now we have our good server settings in "server_settings"
2441
1753
2442
1754
##################################################################
2443
1755
2444
if (not server_settings["zeroconf"]
2445
and not (server_settings["port"]
2446
or server_settings["socket"] != "")):
2447
parser.error("Needs port or socket to work without Zeroconf")
2448
2449
1756
# For convenience
2450
1757
debug = server_settings["debug"]
2451
1758
debuglevel = server_settings["debuglevel"]
2452
1759
use_dbus = server_settings["use_dbus"]
2453
1760
use_ipv6 = server_settings["use_ipv6"]
2454
stored_state_path = os.path.join(server_settings["statedir"],
2455
stored_state_file)
2456
foreground = server_settings["foreground"]
2457
zeroconf = server_settings["zeroconf"]
2458
2459
if debug:
2460
initlogger(debug, logging.DEBUG)
2461
else:
2462
if not debuglevel:
2463
initlogger(debug)
2464
else:
2465
level = getattr(logging, debuglevel.upper())
2466
initlogger(debug, level)
2467
1761
2468
1762
if server_settings["servicename"] != "Mandos":
2469
syslogger.setFormatter(
2470
logging.Formatter('Mandos ({}) [%(process)d]:'
2471
' %(levelname)s: %(message)s'.format(
2472
server_settings["servicename"])))
1763
syslogger.setFormatter(logging.Formatter
1764
('Mandos (%s) [%%(process)d]:'
1765
' %%(levelname)s: %%(message)s'
1766
% server_settings["servicename"]))
2473
1767
2474
1768
# Parse config file with clients
2475
client_config = configparser.SafeConfigParser(Client
2476
.client_defaults)
1769
client_defaults = { "timeout": "1h",
1770
"interval": "5m",
1771
"checker": "fping -q -- %%(host)s",
1772
"host": "",
1773
"approval_delay": "0s",
1774
"approval_duration": "1s",
1775
}
1776
client_config = configparser.SafeConfigParser(client_defaults)
2477
1777
client_config.read(os.path.join(server_settings["configdir"],
2478
1778
"clients.conf"))
2479
1779
2480
1780
global mandos_dbus_service
2481
1781
mandos_dbus_service = None
2482
1782
2483
socketfd = None
2484
if server_settings["socket"] != "":
2485
socketfd = server_settings["socket"]
2486
tcp_server = MandosServer(
2487
(server_settings["address"], server_settings["port"]),
2488
ClientHandler,
2489
interface=(server_settings["interface"] or None),
2490
use_ipv6=use_ipv6,
2491
gnutls_priority=server_settings["priority"],
2492
use_dbus=use_dbus,
2493
socketfd=socketfd)
2494
if not foreground:
2495
pidfilename = "/run/mandos.pid"
2496
if not os.path.isdir("/run/."):
2497
pidfilename = "/var/run/mandos.pid"
2498
pidfile = None
1783
tcp_server = MandosServer((server_settings["address"],
1784
server_settings["port"]),
1785
ClientHandler,
1786
interface=(server_settings["interface"]
1787
or None),
1788
use_ipv6=use_ipv6,
1789
gnutls_priority=
1790
server_settings["priority"],
1791
use_dbus=use_dbus)
1792
if not debug:
1793
pidfilename = "/var/run/mandos.pid"
2499
1794
try:
2500
1795
pidfile = open(pidfilename, "w")
2501
except IOError as e:
2502
logger.error("Could not open file %r", pidfilename,
2503
exc_info=e)
1796
except IOError:
1797
logger.error("Could not open file %r", pidfilename)
2504
1798
2505
for name in ("_mandos", "mandos", "nobody"):
1799
try:
1800
uid = pwd.getpwnam("_mandos").pw_uid
1801
gid = pwd.getpwnam("_mandos").pw_gid
1802
except KeyError:
2506
1803
try:
2507
uid = pwd.getpwnam(name).pw_uid
2508
gid = pwd.getpwnam(name).pw_gid
2509
break
1804
uid = pwd.getpwnam("mandos").pw_uid
1805
gid = pwd.getpwnam("mandos").pw_gid
2510
1806
except KeyError:
2511
continue
2512
else:
2513
uid = 65534
2514
gid = 65534
1807
try:
1808
uid = pwd.getpwnam("nobody").pw_uid
1809
gid = pwd.getpwnam("nobody").pw_gid
1810
except KeyError:
1811
uid = 65534
1812
gid = 65534
2515
1813
try:
2516
1814
os.setgid(gid)
2517
1815
os.setuid(uid)
2518
except OSError as error:
2519
if error.errno != errno.EPERM:
2520
raise
1816
except OSError, error:
1817
if error[0] != errno.EPERM:
1818
raise error
2521
1819
1820
if not debug and not debuglevel:
1821
syslogger.setLevel(logging.WARNING)
1822
console.setLevel(logging.WARNING)
1823
if debuglevel:
1824
level = getattr(logging, debuglevel.upper())
1825
syslogger.setLevel(level)
1826
console.setLevel(level)
1827
2522
1828
if debug:
2523
1829
# Enable all possible GnuTLS debugging
2524
1830
2530
1836
def debug_gnutls(level, string):
2531
1837
logger.debug("GnuTLS: %s", string[:-1])
2532
1838
2533
gnutls.library.functions.gnutls_global_set_log_function(
2534
debug_gnutls)
1839
(gnutls.library.functions
1840
.gnutls_global_set_log_function(debug_gnutls))
2535
1841
2536
1842
# Redirect stdin so all checkers get /dev/null
2537
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1843
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2538
1844
os.dup2(null, sys.stdin.fileno())
2539
1845
if null > 2:
2540
1846
os.close(null)
1847
else:
1848
# No console logging
1849
logger.removeHandler(console)
2541
1850
2542
1851
# Need to fork before connecting to D-Bus
2543
if not foreground:
1852
if not debug:
2544
1853
# Close all input and output, do double fork, etc.
2545
1854
daemon()
2546
1855
2547
# multiprocessing will use threads, so before we use gobject we
2548
# need to inform gobject that threads will be used.
2549
gobject.threads_init()
2550
2551
1856
global main_loop
2552
1857
# From the Avahi example code
2553
DBusGMainLoop(set_as_default=True)
1858
DBusGMainLoop(set_as_default=True )
2554
1859
main_loop = gobject.MainLoop()
2555
1860
bus = dbus.SystemBus()
2556
1861
# End of Avahi example code
2557
1862
if use_dbus:
2558
1863
try:
2559
bus_name = dbus.service.BusName("se.recompile.Mandos",
2560
bus,
2561
do_not_queue=True)
2562
old_bus_name = dbus.service.BusName(
2563
"se.bsnet.fukt.Mandos", bus,
2564
do_not_queue=True)
2565
except dbus.exceptions.NameExistsException as e:
2566
logger.error("Disabling D-Bus:", exc_info=e)
1864
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1865
bus, do_not_queue=True)
1866
except dbus.exceptions.NameExistsException, e:
1867
logger.error(unicode(e) + ", disabling D-Bus")
2567
1868
use_dbus = False
2568
1869
server_settings["use_dbus"] = False
2569
1870
tcp_server.use_dbus = False
2570
if zeroconf:
2571
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2572
service = AvahiServiceToSyslog(
2573
name = server_settings["servicename"],
2574
servicetype = "_mandos._tcp",
2575
protocol = protocol,
2576
bus = bus)
2577
if server_settings["interface"]:
2578
service.interface = if_nametoindex(
2579
server_settings["interface"].encode("utf-8"))
1871
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1872
service = AvahiService(name = server_settings["servicename"],
1873
servicetype = "_mandos._tcp",
1874
protocol = protocol, bus = bus)
1875
if server_settings["interface"]:
1876
service.interface = (if_nametoindex
1877
(str(server_settings["interface"])))
2580
1878
2581
1879
global multiprocessing_manager
2582
1880
multiprocessing_manager = multiprocessing.Manager()
2584
1882
client_class = Client
2585
1883
if use_dbus:
2586
1884
client_class = functools.partial(ClientDBus, bus = bus)
2587
2588
client_settings = Client.config_parser(client_config)
2589
old_client_settings = {}
2590
clients_data = {}
2591
2592
# This is used to redirect stdout and stderr for checker processes
2593
global wnull
2594
wnull = open(os.devnull, "w") # A writable /dev/null
2595
# Only used if server is running in foreground but not in debug
2596
# mode
2597
if debug or not foreground:
2598
wnull.close()
2599
2600
# Get client data and settings from last running state.
2601
if server_settings["restore"]:
2602
try:
2603
with open(stored_state_path, "rb") as stored_state:
2604
clients_data, old_client_settings = pickle.load(
2605
stored_state)
2606
os.remove(stored_state_path)
2607
except IOError as e:
2608
if e.errno == errno.ENOENT:
2609
logger.warning("Could not load persistent state:"
2610
" {}".format(os.strerror(e.errno)))
2611
else:
2612
logger.critical("Could not load persistent state:",
2613
exc_info=e)
2614
raise
2615
except EOFError as e:
2616
logger.warning("Could not load persistent state: "
2617
"EOFError:",
2618
exc_info=e)
2619
2620
with PGPEngine() as pgp:
2621
for client_name, client in clients_data.items():
2622
# Skip removed clients
2623
if client_name not in client_settings:
2624
continue
2625
2626
# Decide which value to use after restoring saved state.
2627
# We have three different values: Old config file,
2628
# new config file, and saved state.
2629
# New config value takes precedence if it differs from old
2630
# config value, otherwise use saved state.
2631
for name, value in client_settings[client_name].items():
2632
try:
2633
# For each value in new config, check if it
2634
# differs from the old config value (Except for
2635
# the "secret" attribute)
2636
if (name != "secret"
2637
and (value !=
2638
old_client_settings[client_name][name])):
2639
client[name] = value
2640
except KeyError:
2641
pass
2642
2643
# Clients who has passed its expire date can still be
2644
# enabled if its last checker was successful. A Client
2645
# whose checker succeeded before we stored its state is
2646
# assumed to have successfully run all checkers during
2647
# downtime.
2648
if client["enabled"]:
2649
if datetime.datetime.utcnow() >= client["expires"]:
2650
if not client["last_checked_ok"]:
2651
logger.warning(
2652
"disabling client {} - Client never "
2653
"performed a successful checker".format(
2654
client_name))
2655
client["enabled"] = False
2656
elif client["last_checker_status"] != 0:
2657
logger.warning(
2658
"disabling client {} - Client last"
2659
" checker failed with error code"
2660
" {}".format(
2661
client_name,
2662
client["last_checker_status"]))
2663
client["enabled"] = False
2664
else:
2665
client["expires"] = (
2666
datetime.datetime.utcnow()
2667
+ client["timeout"])
2668
logger.debug("Last checker succeeded,"
2669
" keeping {} enabled".format(
2670
client_name))
1885
def client_config_items(config, section):
1886
special_settings = {
1887
"approved_by_default":
1888
lambda: config.getboolean(section,
1889
"approved_by_default"),
1890
}
1891
for name, value in config.items(section):
2671
1892
try:
2672
client["secret"] = pgp.decrypt(
2673
client["encrypted_secret"],
2674
client_settings[client_name]["secret"])
2675
except PGPError:
2676
# If decryption fails, we use secret from new settings
2677
logger.debug("Failed to decrypt {} old secret".format(
2678
client_name))
2679
client["secret"] = (client_settings[client_name]
2680
["secret"])
2681
2682
# Add/remove clients based on new changes made to config
2683
for client_name in (set(old_client_settings)
2684
- set(client_settings)):
2685
del clients_data[client_name]
2686
for client_name in (set(client_settings)
2687
- set(old_client_settings)):
2688
clients_data[client_name] = client_settings[client_name]
2689
2690
# Create all client objects
2691
for client_name, client in clients_data.items():
2692
tcp_server.clients[client_name] = client_class(
2693
name = client_name,
2694
settings = client,
2695
server_settings = server_settings)
2696
1893
yield (name, special_settings[name]())
1894
except KeyError:
1895
yield (name, value)
1896
1897
tcp_server.clients.update(set(
1898
client_class(name = section,
1899
config= dict(client_config_items(
1900
client_config, section)))
1901
for section in client_config.sections()))
2697
1902
if not tcp_server.clients:
2698
1903
logger.warning("No clients defined")
2699
2700
if not foreground:
2701
if pidfile is not None:
2702
try:
2703
with pidfile:
2704
pid = os.getpid()
2705
pidfile.write("{}\n".format(pid).encode("utf-8"))
2706
except IOError:
2707
logger.error("Could not write to file %r with PID %d",
2708
pidfilename, pid)
2709
del pidfile
1904
1905
if not debug:
1906
try:
1907
with pidfile:
1908
pid = os.getpid()
1909
pidfile.write(str(pid) + "\n".encode("utf-8"))
1910
del pidfile
1911
except IOError:
1912
logger.error("Could not write to file %r with PID %d",
1913
pidfilename, pid)
1914
except NameError:
1915
# "pidfile" was never created
1916
pass
2710
1917
del pidfilename
2711
1918
1919
signal.signal(signal.SIGINT, signal.SIG_IGN)
1920
2712
1921
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2713
1922
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2714
1923
2715
1924
if use_dbus:
2716
2717
@alternate_dbus_interfaces(
2718
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2719
class MandosDBusService(DBusObjectWithProperties):
1925
class MandosDBusService(dbus.service.Object):
2720
1926
"""A D-Bus proxy object"""
2721
2722
1927
def __init__(self):
2723
1928
dbus.service.Object.__init__(self, bus, "/")
2724
2725
_interface = "se.recompile.Mandos"
2726
2727
@dbus_interface_annotations(_interface)
2728
def _foo(self):
2729
return {
2730
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2731
"false" }
1929
_interface = "se.bsnet.fukt.Mandos"
2732
1930
2733
1931
@dbus.service.signal(_interface, signature="o")
2734
1932
def ClientAdded(self, objpath):
2748
1946
@dbus.service.method(_interface, out_signature="ao")
2749
1947
def GetAllClients(self):
2750
1948
"D-Bus method"
2751
return dbus.Array(c.dbus_object_path for c in
2752
tcp_server.clients.itervalues())
1949
return dbus.Array(c.dbus_object_path
1950
for c in tcp_server.clients)
2753
1951
2754
1952
@dbus.service.method(_interface,
2755
1953
out_signature="a{oa{sv}}")
2756
1954
def GetAllClientsWithProperties(self):
2757
1955
"D-Bus method"
2758
1956
return dbus.Dictionary(
2759
{ c.dbus_object_path: c.GetAll("")
2760
for c in tcp_server.clients.itervalues() },
1957
((c.dbus_object_path, c.GetAll(""))
1958
for c in tcp_server.clients),
2761
1959
signature="oa{sv}")
2762
1960
2763
1961
@dbus.service.method(_interface, in_signature="o")
2764
1962
def RemoveClient(self, object_path):
2765
1963
"D-Bus method"
2766
for c in tcp_server.clients.itervalues():
1964
for c in tcp_server.clients:
2767
1965
if c.dbus_object_path == object_path:
2768
del tcp_server.clients[c.name]
1966
tcp_server.clients.remove(c)
2769
1967
c.remove_from_connection()
2770
1968
# Don't signal anything except ClientRemoved
2771
1969
c.disable(quiet=True)
2780
1978
2781
1979
def cleanup():
2782
1980
"Cleanup function; run on exit"
2783
if zeroconf:
2784
service.cleanup()
2785
2786
multiprocessing.active_children()
2787
wnull.close()
2788
if not (tcp_server.clients or client_settings):
2789
return
2790
2791
# Store client before exiting. Secrets are encrypted with key
2792
# based on what config file has. If config file is
2793
# removed/edited, old secret will thus be unrecovable.
2794
clients = {}
2795
with PGPEngine() as pgp:
2796
for client in tcp_server.clients.itervalues():
2797
key = client_settings[client.name]["secret"]
2798
client.encrypted_secret = pgp.encrypt(client.secret,
2799
key)
2800
client_dict = {}
2801
2802
# A list of attributes that can not be pickled
2803
# + secret.
2804
exclude = { "bus", "changedstate", "secret",
2805
"checker", "server_settings" }
2806
for name, typ in inspect.getmembers(dbus.service
2807
.Object):
2808
exclude.add(name)
2809
2810
client_dict["encrypted_secret"] = (client
2811
.encrypted_secret)
2812
for attr in client.client_structure:
2813
if attr not in exclude:
2814
client_dict[attr] = getattr(client, attr)
2815
2816
clients[client.name] = client_dict
2817
del client_settings[client.name]["secret"]
2818
2819
try:
2820
with tempfile.NamedTemporaryFile(
2821
mode='wb',
2822
suffix=".pickle",
2823
prefix='clients-',
2824
dir=os.path.dirname(stored_state_path),
2825
delete=False) as stored_state:
2826
pickle.dump((clients, client_settings), stored_state)
2827
tempname = stored_state.name
2828
os.rename(tempname, stored_state_path)
2829
except (IOError, OSError) as e:
2830
if not debug:
2831
try:
2832
os.remove(tempname)
2833
except NameError:
2834
pass
2835
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2836
logger.warning("Could not save persistent state: {}"
2837
.format(os.strerror(e.errno)))
2838
else:
2839
logger.warning("Could not save persistent state:",
2840
exc_info=e)
2841
raise
2842
2843
# Delete all clients, and settings from config
1981
service.cleanup()
1982
2844
1983
while tcp_server.clients:
2845
name, client = tcp_server.clients.popitem()
1984
client = tcp_server.clients.pop()
2846
1985
if use_dbus:
2847
1986
client.remove_from_connection()
1987
client.disable_hook = None
2848
1988
# Don't signal anything except ClientRemoved
2849
1989
client.disable(quiet=True)
2850
1990
if use_dbus:
2851
1991
# Emit D-Bus signal
2852
mandos_dbus_service.ClientRemoved(
2853
client.dbus_object_path, client.name)
2854
client_settings.clear()
1992
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1993
client.name)
2855
1994
2856
1995
atexit.register(cleanup)
2857
1996
2858
for client in tcp_server.clients.itervalues():
1997
for client in tcp_server.clients:
2859
1998
if use_dbus:
2860
1999
# Emit D-Bus signal
2861
2000
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2862
# Need to initiate checking of clients
2863
if client.enabled:
2864
client.init_checker()
2001
client.enable()
2865
2002
2866
2003
tcp_server.enable()
2867
2004
tcp_server.server_activate()
2868
2005
2869
2006
# Find out what port we got
2870
if zeroconf:
2871
service.port = tcp_server.socket.getsockname()[1]
2007
service.port = tcp_server.socket.getsockname()[1]
2872
2008
if use_ipv6:
2873
2009
logger.info("Now listening on address %r, port %d,"
2874
" flowinfo %d, scope_id %d",
2875
*tcp_server.socket.getsockname())
2010
" flowinfo %d, scope_id %d"
2011
% tcp_server.socket.getsockname())
2876
2012
else: # IPv4
2877
logger.info("Now listening on address %r, port %d",
2878
*tcp_server.socket.getsockname())
2013
logger.info("Now listening on address %r, port %d"
2014
% tcp_server.socket.getsockname())
2879
2015
2880
2016
#service.interface = tcp_server.socket.getsockname()[3]
2881
2017
2882
2018
try:
2883
if zeroconf:
2884
# From the Avahi example code
2885
try:
2886
service.activate()
2887
except dbus.exceptions.DBusException as error:
2888
logger.critical("D-Bus Exception", exc_info=error)
2889
cleanup()
2890
sys.exit(1)
2891
# End of Avahi example code
2019
# From the Avahi example code
2020
try:
2021
service.activate()
2022
except dbus.exceptions.DBusException, error:
2023
logger.critical("DBusException: %s", error)
2024
cleanup()
2025
sys.exit(1)
2026
# End of Avahi example code
2892
2027
2893
2028
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2894
2029
lambda *args, **kwargs:
2897
2032
2898
2033
logger.debug("Starting main loop")
2899
2034
main_loop.run()
2900
except AvahiError as error:
2901
logger.critical("Avahi Error", exc_info=error)
2035
except AvahiError, error:
2036
logger.critical("AvahiError: %s", error)
2902
2037
cleanup()
2903
2038
sys.exit(1)
2904
2039
except KeyboardInterrupt:
2909
2044
# Must run before the D-Bus bus name gets deregistered
2910
2045
cleanup()
2911
2046
2912
2913
2047
if __name__ == '__main__':
2914
2048
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0