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- Committer: Teddy Hogeborn
- Date: 2012-05-17 01:55:58 UTC
- Revision ID: teddy@recompile.se-20120517015558-5703p8nkquc2rhgd
* .bzrignore (statedir): Added.
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 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
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
37
from future_builtins import *
41
38
42
try:
43
import SocketServer as socketserver
44
except ImportError:
45
import socketserver
39
import SocketServer as socketserver
46
40
import socket
47
41
import argparse
48
42
import datetime
49
43
import errno
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
import configparser
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
54
51
import sys
55
52
import re
56
53
import os
65
62
import struct
66
63
import fcntl
67
64
import functools
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
65
import cPickle as pickle
72
66
import multiprocessing
73
67
import types
74
68
import binascii
75
69
import tempfile
76
70
import itertools
77
import collections
78
import codecs
79
71
80
72
import dbus
81
73
import dbus.service
82
from gi.repository import GLib
74
import gobject
75
import avahi
83
76
from dbus.mainloop.glib import DBusGMainLoop
84
77
import ctypes
85
78
import ctypes.util
86
79
import xml.dom.minidom
87
80
import inspect
81
import GnuPGInterface
88
82
89
83
try:
90
84
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
94
88
except ImportError:
95
89
SO_BINDTODEVICE = None
96
90
97
if sys.version_info.major == 2:
98
str = unicode
99
100
version = "1.7.7"
91
version = "1.5.3"
101
92
stored_state_file = "clients.pickle"
102
93
103
94
logger = logging.getLogger()
104
syslogger = None
95
syslogger = (logging.handlers.SysLogHandler
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
97
address = str("/dev/log")))
105
98
106
99
try:
107
if_nametoindex = ctypes.cdll.LoadLibrary(
108
ctypes.util.find_library("c")).if_nametoindex
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
109
103
except (OSError, AttributeError):
110
111
104
def if_nametoindex(interface):
112
105
"Get an interface index the hard way, i.e. using fcntl()"
113
106
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
114
107
with contextlib.closing(socket.socket()) as s:
115
108
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
116
struct.pack(b"16s16x", interface))
117
interface_index = struct.unpack("I", ifreq[16:20])[0]
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
118
113
return interface_index
119
114
120
115
121
def copy_function(func):
122
"""Make a copy of a function"""
123
if sys.version_info.major == 2:
124
return types.FunctionType(func.func_code,
125
func.func_globals,
126
func.func_name,
127
func.func_defaults,
128
func.func_closure)
129
else:
130
return types.FunctionType(func.__code__,
131
func.__globals__,
132
func.__name__,
133
func.__defaults__,
134
func.__closure__)
135
136
137
116
def initlogger(debug, level=logging.WARNING):
138
117
"""init logger and add loglevel"""
139
118
140
global syslogger
141
syslogger = (logging.handlers.SysLogHandler(
142
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
143
address = "/dev/log"))
144
119
syslogger.setFormatter(logging.Formatter
145
120
('Mandos [%(process)d]: %(levelname)s:'
146
121
' %(message)s'))
163
138
164
139
class PGPEngine(object):
165
140
"""A simple class for OpenPGP symmetric encryption & decryption"""
166
167
141
def __init__(self):
142
self.gnupg = GnuPGInterface.GnuPG()
168
143
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
169
self.gpg = "gpg"
170
try:
171
output = subprocess.check_output(["gpgconf"])
172
for line in output.splitlines():
173
name, text, path = line.split(b":")
174
if name == "gpg":
175
self.gpg = path
176
break
177
except OSError as e:
178
if e.errno != errno.ENOENT:
179
raise
180
self.gnupgargs = ['--batch',
181
'--homedir', self.tempdir,
182
'--force-mdc',
183
'--quiet',
184
'--no-use-agent']
144
self.gnupg = GnuPGInterface.GnuPG()
145
self.gnupg.options.meta_interactive = False
146
self.gnupg.options.homedir = self.tempdir
147
self.gnupg.options.extra_args.extend(['--force-mdc',
148
'--quiet',
149
'--no-use-agent'])
185
150
186
151
def __enter__(self):
187
152
return self
188
153
189
def __exit__(self, exc_type, exc_value, traceback):
154
def __exit__ (self, exc_type, exc_value, traceback):
190
155
self._cleanup()
191
156
return False
192
157
209
174
def password_encode(self, password):
210
175
# Passphrase can not be empty and can not contain newlines or
211
176
# NUL bytes. So we prefix it and hex encode it.
212
encoded = b"mandos" + binascii.hexlify(password)
213
if len(encoded) > 2048:
214
# GnuPG can't handle long passwords, so encode differently
215
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
216
.replace(b"\n", b"\\n")
217
.replace(b"\0", b"\\x00"))
218
return encoded
177
return b"mandos" + binascii.hexlify(password)
219
178
220
179
def encrypt(self, data, password):
221
passphrase = self.password_encode(password)
222
with tempfile.NamedTemporaryFile(
223
dir=self.tempdir) as passfile:
224
passfile.write(passphrase)
225
passfile.flush()
226
proc = subprocess.Popen([self.gpg, '--symmetric',
227
'--passphrase-file',
228
passfile.name]
229
+ self.gnupgargs,
230
stdin = subprocess.PIPE,
231
stdout = subprocess.PIPE,
232
stderr = subprocess.PIPE)
233
ciphertext, err = proc.communicate(input = data)
234
if proc.returncode != 0:
235
raise PGPError(err)
180
self.gnupg.passphrase = self.password_encode(password)
181
with open(os.devnull, "w") as devnull:
182
try:
183
proc = self.gnupg.run(['--symmetric'],
184
create_fhs=['stdin', 'stdout'],
185
attach_fhs={'stderr': devnull})
186
with contextlib.closing(proc.handles['stdin']) as f:
187
f.write(data)
188
with contextlib.closing(proc.handles['stdout']) as f:
189
ciphertext = f.read()
190
proc.wait()
191
except IOError as e:
192
raise PGPError(e)
193
self.gnupg.passphrase = None
236
194
return ciphertext
237
195
238
196
def decrypt(self, data, password):
239
passphrase = self.password_encode(password)
240
with tempfile.NamedTemporaryFile(
241
dir = self.tempdir) as passfile:
242
passfile.write(passphrase)
243
passfile.flush()
244
proc = subprocess.Popen([self.gpg, '--decrypt',
245
'--passphrase-file',
246
passfile.name]
247
+ self.gnupgargs,
248
stdin = subprocess.PIPE,
249
stdout = subprocess.PIPE,
250
stderr = subprocess.PIPE)
251
decrypted_plaintext, err = proc.communicate(input = data)
252
if proc.returncode != 0:
253
raise PGPError(err)
197
self.gnupg.passphrase = self.password_encode(password)
198
with open(os.devnull, "w") as devnull:
199
try:
200
proc = self.gnupg.run(['--decrypt'],
201
create_fhs=['stdin', 'stdout'],
202
attach_fhs={'stderr': devnull})
203
with contextlib.closing(proc.handles['stdin']) as f:
204
f.write(data)
205
with contextlib.closing(proc.handles['stdout']) as f:
206
decrypted_plaintext = f.read()
207
proc.wait()
208
except IOError as e:
209
raise PGPError(e)
210
self.gnupg.passphrase = None
254
211
return decrypted_plaintext
255
212
256
# Pretend that we have an Avahi module
257
class Avahi(object):
258
"""This isn't so much a class as it is a module-like namespace.
259
It is instantiated once, and simulates having an Avahi module."""
260
IF_UNSPEC = -1 # avahi-common/address.h
261
PROTO_UNSPEC = -1 # avahi-common/address.h
262
PROTO_INET = 0 # avahi-common/address.h
263
PROTO_INET6 = 1 # avahi-common/address.h
264
DBUS_NAME = "org.freedesktop.Avahi"
265
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
266
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
267
DBUS_PATH_SERVER = "/"
268
def string_array_to_txt_array(self, t):
269
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
270
for s in t), signature="ay")
271
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
272
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
273
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
274
SERVER_INVALID = 0 # avahi-common/defs.h
275
SERVER_REGISTERING = 1 # avahi-common/defs.h
276
SERVER_RUNNING = 2 # avahi-common/defs.h
277
SERVER_COLLISION = 3 # avahi-common/defs.h
278
SERVER_FAILURE = 4 # avahi-common/defs.h
279
avahi = Avahi()
280
213
281
214
class AvahiError(Exception):
282
215
def __init__(self, value, *args, **kwargs):
283
216
self.value = value
284
return super(AvahiError, self).__init__(value, *args,
285
**kwargs)
286
217
super(AvahiError, self).__init__(value, *args, **kwargs)
218
def __unicode__(self):
219
return unicode(repr(self.value))
287
220
288
221
class AvahiServiceError(AvahiError):
289
222
pass
290
223
291
292
224
class AvahiGroupError(AvahiError):
293
225
pass
294
226
301
233
Used to optionally bind to the specified interface.
302
234
name: string; Example: 'Mandos'
303
235
type: string; Example: '_mandos._tcp'.
304
See <https://www.iana.org/assignments/service-names-port-numbers>
236
See <http://www.dns-sd.org/ServiceTypes.html>
305
237
port: integer; what port to announce
306
238
TXT: list of strings; TXT record for the service
307
239
domain: string; Domain to publish on, default to .local if empty.
314
246
bus: dbus.SystemBus()
315
247
"""
316
248
317
def __init__(self,
318
interface = avahi.IF_UNSPEC,
319
name = None,
320
servicetype = None,
321
port = None,
322
TXT = None,
323
domain = "",
324
host = "",
325
max_renames = 32768,
326
protocol = avahi.PROTO_UNSPEC,
327
bus = None):
249
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
250
servicetype = None, port = None, TXT = None,
251
domain = "", host = "", max_renames = 32768,
252
protocol = avahi.PROTO_UNSPEC, bus = None):
328
253
self.interface = interface
329
254
self.name = name
330
255
self.type = servicetype
340
265
self.bus = bus
341
266
self.entry_group_state_changed_match = None
342
267
343
def rename(self, remove=True):
268
def rename(self):
344
269
"""Derived from the Avahi example code"""
345
270
if self.rename_count >= self.max_renames:
346
271
logger.critical("No suitable Zeroconf service name found"
347
272
" after %i retries, exiting.",
348
273
self.rename_count)
349
274
raise AvahiServiceError("Too many renames")
350
self.name = str(
351
self.server.GetAlternativeServiceName(self.name))
352
self.rename_count += 1
275
self.name = unicode(self.server
276
.GetAlternativeServiceName(self.name))
353
277
logger.info("Changing Zeroconf service name to %r ...",
354
278
self.name)
355
if remove:
356
self.remove()
279
self.remove()
357
280
try:
358
281
self.add()
359
282
except dbus.exceptions.DBusException as error:
360
if (error.get_dbus_name()
361
== "org.freedesktop.Avahi.CollisionError"):
362
logger.info("Local Zeroconf service name collision.")
363
return self.rename(remove=False)
364
else:
365
logger.critical("D-Bus Exception", exc_info=error)
366
self.cleanup()
367
os._exit(1)
283
logger.critical("D-Bus Exception", exc_info=error)
284
self.cleanup()
285
os._exit(1)
286
self.rename_count += 1
368
287
369
288
def remove(self):
370
289
"""Derived from the Avahi example code"""
408
327
self.rename()
409
328
elif state == avahi.ENTRY_GROUP_FAILURE:
410
329
logger.critical("Avahi: Error in group state changed %s",
411
str(error))
412
raise AvahiGroupError("State changed: {!s}".format(error))
330
unicode(error))
331
raise AvahiGroupError("State changed: {0!s}"
332
.format(error))
413
333
414
334
def cleanup(self):
415
335
"""Derived from the Avahi example code"""
425
345
def server_state_changed(self, state, error=None):
426
346
"""Derived from the Avahi example code"""
427
347
logger.debug("Avahi server state change: %i", state)
428
bad_states = {
429
avahi.SERVER_INVALID: "Zeroconf server invalid",
430
avahi.SERVER_REGISTERING: None,
431
avahi.SERVER_COLLISION: "Zeroconf server name collision",
432
avahi.SERVER_FAILURE: "Zeroconf server failure",
433
}
348
bad_states = { avahi.SERVER_INVALID:
349
"Zeroconf server invalid",
350
avahi.SERVER_REGISTERING: None,
351
avahi.SERVER_COLLISION:
352
"Zeroconf server name collision",
353
avahi.SERVER_FAILURE:
354
"Zeroconf server failure" }
434
355
if state in bad_states:
435
356
if bad_states[state] is not None:
436
357
if error is None:
439
360
logger.error(bad_states[state] + ": %r", error)
440
361
self.cleanup()
441
362
elif state == avahi.SERVER_RUNNING:
442
try:
443
self.add()
444
except dbus.exceptions.DBusException as error:
445
if (error.get_dbus_name()
446
== "org.freedesktop.Avahi.CollisionError"):
447
logger.info("Local Zeroconf service name"
448
" collision.")
449
return self.rename(remove=False)
450
else:
451
logger.critical("D-Bus Exception", exc_info=error)
452
self.cleanup()
453
os._exit(1)
363
self.add()
454
364
else:
455
365
if error is None:
456
366
logger.debug("Unknown state: %r", state)
466
376
follow_name_owner_changes=True),
467
377
avahi.DBUS_INTERFACE_SERVER)
468
378
self.server.connect_to_signal("StateChanged",
469
self.server_state_changed)
379
self.server_state_changed)
470
380
self.server_state_changed(self.server.GetState())
471
381
472
382
473
383
class AvahiServiceToSyslog(AvahiService):
474
def rename(self, *args, **kwargs):
384
def rename(self):
475
385
"""Add the new name to the syslog messages"""
476
ret = AvahiService.rename(self, *args, **kwargs)
477
syslogger.setFormatter(logging.Formatter(
478
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
479
.format(self.name)))
386
ret = AvahiService.rename(self)
387
syslogger.setFormatter(logging.Formatter
388
('Mandos ({0}) [%(process)d]:'
389
' %(levelname)s: %(message)s'
390
.format(self.name)))
480
391
return ret
481
392
482
# Pretend that we have a GnuTLS module
483
class GnuTLS(object):
484
"""This isn't so much a class as it is a module-like namespace.
485
It is instantiated once, and simulates having a GnuTLS module."""
486
487
_library = ctypes.cdll.LoadLibrary(
488
ctypes.util.find_library("gnutls"))
489
_need_version = b"3.3.0"
490
def __init__(self):
491
# Need to use class name "GnuTLS" here, since this method is
492
# called before the assignment to the "gnutls" global variable
493
# happens.
494
if GnuTLS.check_version(self._need_version) is None:
495
raise GnuTLS.Error("Needs GnuTLS {} or later"
496
.format(self._need_version))
497
498
# Unless otherwise indicated, the constants and types below are
499
# all from the gnutls/gnutls.h C header file.
500
501
# Constants
502
E_SUCCESS = 0
503
E_INTERRUPTED = -52
504
E_AGAIN = -28
505
CRT_OPENPGP = 2
506
CLIENT = 2
507
SHUT_RDWR = 0
508
CRD_CERTIFICATE = 1
509
E_NO_CERTIFICATE_FOUND = -49
510
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
511
512
# Types
513
class session_int(ctypes.Structure):
514
_fields_ = []
515
session_t = ctypes.POINTER(session_int)
516
class certificate_credentials_st(ctypes.Structure):
517
_fields_ = []
518
certificate_credentials_t = ctypes.POINTER(
519
certificate_credentials_st)
520
certificate_type_t = ctypes.c_int
521
class datum_t(ctypes.Structure):
522
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
523
('size', ctypes.c_uint)]
524
class openpgp_crt_int(ctypes.Structure):
525
_fields_ = []
526
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
527
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
528
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
529
credentials_type_t = ctypes.c_int
530
transport_ptr_t = ctypes.c_void_p
531
close_request_t = ctypes.c_int
532
533
# Exceptions
534
class Error(Exception):
535
# We need to use the class name "GnuTLS" here, since this
536
# exception might be raised from within GnuTLS.__init__,
537
# which is called before the assignment to the "gnutls"
538
# global variable has happened.
539
def __init__(self, message = None, code = None, args=()):
540
# Default usage is by a message string, but if a return
541
# code is passed, convert it to a string with
542
# gnutls.strerror()
543
self.code = code
544
if message is None and code is not None:
545
message = GnuTLS.strerror(code)
546
return super(GnuTLS.Error, self).__init__(
547
message, *args)
548
549
class CertificateSecurityError(Error):
550
pass
551
552
# Classes
553
class Credentials(object):
554
def __init__(self):
555
self._c_object = gnutls.certificate_credentials_t()
556
gnutls.certificate_allocate_credentials(
557
ctypes.byref(self._c_object))
558
self.type = gnutls.CRD_CERTIFICATE
559
560
def __del__(self):
561
gnutls.certificate_free_credentials(self._c_object)
562
563
class ClientSession(object):
564
def __init__(self, socket, credentials = None):
565
self._c_object = gnutls.session_t()
566
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
567
gnutls.set_default_priority(self._c_object)
568
gnutls.transport_set_ptr(self._c_object, socket.fileno())
569
gnutls.handshake_set_private_extensions(self._c_object,
570
True)
571
self.socket = socket
572
if credentials is None:
573
credentials = gnutls.Credentials()
574
gnutls.credentials_set(self._c_object, credentials.type,
575
ctypes.cast(credentials._c_object,
576
ctypes.c_void_p))
577
self.credentials = credentials
578
579
def __del__(self):
580
gnutls.deinit(self._c_object)
581
582
def handshake(self):
583
return gnutls.handshake(self._c_object)
584
585
def send(self, data):
586
data = bytes(data)
587
data_len = len(data)
588
while data_len > 0:
589
data_len -= gnutls.record_send(self._c_object,
590
data[-data_len:],
591
data_len)
592
593
def bye(self):
594
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
595
596
# Error handling functions
597
def _error_code(result):
598
"""A function to raise exceptions on errors, suitable
599
for the 'restype' attribute on ctypes functions"""
600
if result >= 0:
601
return result
602
if result == gnutls.E_NO_CERTIFICATE_FOUND:
603
raise gnutls.CertificateSecurityError(code = result)
604
raise gnutls.Error(code = result)
605
606
def _retry_on_error(result, func, arguments):
607
"""A function to retry on some errors, suitable
608
for the 'errcheck' attribute on ctypes functions"""
609
while result < 0:
610
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
611
return _error_code(result)
612
result = func(*arguments)
613
return result
614
615
# Unless otherwise indicated, the function declarations below are
616
# all from the gnutls/gnutls.h C header file.
617
618
# Functions
619
priority_set_direct = _library.gnutls_priority_set_direct
620
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
621
ctypes.POINTER(ctypes.c_char_p)]
622
priority_set_direct.restype = _error_code
623
624
init = _library.gnutls_init
625
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
626
init.restype = _error_code
627
628
set_default_priority = _library.gnutls_set_default_priority
629
set_default_priority.argtypes = [session_t]
630
set_default_priority.restype = _error_code
631
632
record_send = _library.gnutls_record_send
633
record_send.argtypes = [session_t, ctypes.c_void_p,
634
ctypes.c_size_t]
635
record_send.restype = ctypes.c_ssize_t
636
record_send.errcheck = _retry_on_error
637
638
certificate_allocate_credentials = (
639
_library.gnutls_certificate_allocate_credentials)
640
certificate_allocate_credentials.argtypes = [
641
ctypes.POINTER(certificate_credentials_t)]
642
certificate_allocate_credentials.restype = _error_code
643
644
certificate_free_credentials = (
645
_library.gnutls_certificate_free_credentials)
646
certificate_free_credentials.argtypes = [certificate_credentials_t]
647
certificate_free_credentials.restype = None
648
649
handshake_set_private_extensions = (
650
_library.gnutls_handshake_set_private_extensions)
651
handshake_set_private_extensions.argtypes = [session_t,
652
ctypes.c_int]
653
handshake_set_private_extensions.restype = None
654
655
credentials_set = _library.gnutls_credentials_set
656
credentials_set.argtypes = [session_t, credentials_type_t,
657
ctypes.c_void_p]
658
credentials_set.restype = _error_code
659
660
strerror = _library.gnutls_strerror
661
strerror.argtypes = [ctypes.c_int]
662
strerror.restype = ctypes.c_char_p
663
664
certificate_type_get = _library.gnutls_certificate_type_get
665
certificate_type_get.argtypes = [session_t]
666
certificate_type_get.restype = _error_code
667
668
certificate_get_peers = _library.gnutls_certificate_get_peers
669
certificate_get_peers.argtypes = [session_t,
670
ctypes.POINTER(ctypes.c_uint)]
671
certificate_get_peers.restype = ctypes.POINTER(datum_t)
672
673
global_set_log_level = _library.gnutls_global_set_log_level
674
global_set_log_level.argtypes = [ctypes.c_int]
675
global_set_log_level.restype = None
676
677
global_set_log_function = _library.gnutls_global_set_log_function
678
global_set_log_function.argtypes = [log_func]
679
global_set_log_function.restype = None
680
681
deinit = _library.gnutls_deinit
682
deinit.argtypes = [session_t]
683
deinit.restype = None
684
685
handshake = _library.gnutls_handshake
686
handshake.argtypes = [session_t]
687
handshake.restype = _error_code
688
handshake.errcheck = _retry_on_error
689
690
transport_set_ptr = _library.gnutls_transport_set_ptr
691
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
692
transport_set_ptr.restype = None
693
694
bye = _library.gnutls_bye
695
bye.argtypes = [session_t, close_request_t]
696
bye.restype = _error_code
697
bye.errcheck = _retry_on_error
698
699
check_version = _library.gnutls_check_version
700
check_version.argtypes = [ctypes.c_char_p]
701
check_version.restype = ctypes.c_char_p
702
703
# All the function declarations below are from gnutls/openpgp.h
704
705
openpgp_crt_init = _library.gnutls_openpgp_crt_init
706
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
707
openpgp_crt_init.restype = _error_code
708
709
openpgp_crt_import = _library.gnutls_openpgp_crt_import
710
openpgp_crt_import.argtypes = [openpgp_crt_t,
711
ctypes.POINTER(datum_t),
712
openpgp_crt_fmt_t]
713
openpgp_crt_import.restype = _error_code
714
715
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
716
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
717
ctypes.POINTER(ctypes.c_uint)]
718
openpgp_crt_verify_self.restype = _error_code
719
720
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
721
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
722
openpgp_crt_deinit.restype = None
723
724
openpgp_crt_get_fingerprint = (
725
_library.gnutls_openpgp_crt_get_fingerprint)
726
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
727
ctypes.c_void_p,
728
ctypes.POINTER(
729
ctypes.c_size_t)]
730
openpgp_crt_get_fingerprint.restype = _error_code
731
732
# Remove non-public functions
733
del _error_code, _retry_on_error
734
# Create the global "gnutls" object, simulating a module
735
gnutls = GnuTLS()
736
737
def call_pipe(connection, # : multiprocessing.Connection
738
func, *args, **kwargs):
739
"""This function is meant to be called by multiprocessing.Process
740
741
This function runs func(*args, **kwargs), and writes the resulting
742
return value on the provided multiprocessing.Connection.
743
"""
744
connection.send(func(*args, **kwargs))
745
connection.close()
393
394
def timedelta_to_milliseconds(td):
395
"Convert a datetime.timedelta() to milliseconds"
396
return ((td.days * 24 * 60 * 60 * 1000)
397
+ (td.seconds * 1000)
398
+ (td.microseconds // 1000))
399
746
400
747
401
class Client(object):
748
402
"""A representation of a client host served by this server.
754
408
checker: subprocess.Popen(); a running checker process used
755
409
to see if the client lives.
756
410
'None' if no process is running.
757
checker_callback_tag: a GLib event source tag, or None
411
checker_callback_tag: a gobject event source tag, or None
758
412
checker_command: string; External command which is run to check
759
413
if client lives. %() expansions are done at
760
414
runtime with vars(self) as dict, so that for
761
415
instance %(name)s can be used in the command.
762
checker_initiator_tag: a GLib event source tag, or None
416
checker_initiator_tag: a gobject event source tag, or None
763
417
created: datetime.datetime(); (UTC) object creation
764
418
client_structure: Object describing what attributes a client has
765
419
and is used for storing the client at exit
766
420
current_checker_command: string; current running checker_command
767
disable_initiator_tag: a GLib event source tag, or None
421
disable_initiator_tag: a gobject event source tag, or None
768
422
enabled: bool()
769
423
fingerprint: string (40 or 32 hexadecimal digits); used to
770
424
uniquely identify the client
775
429
last_checker_status: integer between 0 and 255 reflecting exit
776
430
status of last checker. -1 reflects crashed
777
431
checker, -2 means no checker completed yet.
778
last_checker_signal: The signal which killed the last checker, if
779
last_checker_status is -1
780
432
last_enabled: datetime.datetime(); (UTC) or None
781
433
name: string; from the config file, used in log messages and
782
434
D-Bus identifiers
787
439
runtime_expansions: Allowed attributes for runtime expansion.
788
440
expires: datetime.datetime(); time (UTC) when a client will be
789
441
disabled, or None
790
server_settings: The server_settings dict from main()
791
442
"""
792
443
793
444
runtime_expansions = ("approval_delay", "approval_duration",
795
446
"fingerprint", "host", "interval",
796
447
"last_approval_request", "last_checked_ok",
797
448
"last_enabled", "name", "timeout")
798
client_defaults = {
799
"timeout": "PT5M",
800
"extended_timeout": "PT15M",
801
"interval": "PT2M",
802
"checker": "fping -q -- %%(host)s",
803
"host": "",
804
"approval_delay": "PT0S",
805
"approval_duration": "PT1S",
806
"approved_by_default": "True",
807
"enabled": "True",
808
}
449
client_defaults = { "timeout": "5m",
450
"extended_timeout": "15m",
451
"interval": "2m",
452
"checker": "fping -q -- %%(host)s",
453
"host": "",
454
"approval_delay": "0s",
455
"approval_duration": "1s",
456
"approved_by_default": "True",
457
"enabled": "True",
458
}
459
460
def timeout_milliseconds(self):
461
"Return the 'timeout' attribute in milliseconds"
462
return timedelta_to_milliseconds(self.timeout)
463
464
def extended_timeout_milliseconds(self):
465
"Return the 'extended_timeout' attribute in milliseconds"
466
return timedelta_to_milliseconds(self.extended_timeout)
467
468
def interval_milliseconds(self):
469
"Return the 'interval' attribute in milliseconds"
470
return timedelta_to_milliseconds(self.interval)
471
472
def approval_delay_milliseconds(self):
473
return timedelta_to_milliseconds(self.approval_delay)
809
474
810
475
@staticmethod
811
476
def config_parser(config):
827
492
client["enabled"] = config.getboolean(client_name,
828
493
"enabled")
829
494
830
# Uppercase and remove spaces from fingerprint for later
831
# comparison purposes with return value from the
832
# fingerprint() function
833
495
client["fingerprint"] = (section["fingerprint"].upper()
834
496
.replace(" ", ""))
835
497
if "secret" in section:
836
client["secret"] = codecs.decode(section["secret"]
837
.encode("utf-8"),
838
"base64")
498
client["secret"] = section["secret"].decode("base64")
839
499
elif "secfile" in section:
840
500
with open(os.path.expanduser(os.path.expandvars
841
501
(section["secfile"])),
842
502
"rb") as secfile:
843
503
client["secret"] = secfile.read()
844
504
else:
845
raise TypeError("No secret or secfile for section {}"
505
raise TypeError("No secret or secfile for section {0}"
846
506
.format(section))
847
507
client["timeout"] = string_to_delta(section["timeout"])
848
508
client["extended_timeout"] = string_to_delta(
859
519
860
520
return settings
861
521
862
def __init__(self, settings, name = None, server_settings=None):
522
def __init__(self, settings, name = None):
863
523
self.name = name
864
if server_settings is None:
865
server_settings = {}
866
self.server_settings = server_settings
867
524
# adding all client settings
868
for setting, value in settings.items():
525
for setting, value in settings.iteritems():
869
526
setattr(self, setting, value)
870
527
871
528
if self.enabled:
879
536
self.expires = None
880
537
881
538
logger.debug("Creating client %r", self.name)
539
# Uppercase and remove spaces from fingerprint for later
540
# comparison purposes with return value from the fingerprint()
541
# function
882
542
logger.debug(" Fingerprint: %s", self.fingerprint)
883
543
self.created = settings.get("created",
884
544
datetime.datetime.utcnow())
891
551
self.current_checker_command = None
892
552
self.approved = None
893
553
self.approvals_pending = 0
894
self.changedstate = multiprocessing_manager.Condition(
895
multiprocessing_manager.Lock())
896
self.client_structure = [attr
897
for attr in self.__dict__.keys()
554
self.changedstate = (multiprocessing_manager
555
.Condition(multiprocessing_manager
556
.Lock()))
557
self.client_structure = [attr for attr in
558
self.__dict__.iterkeys()
898
559
if not attr.startswith("_")]
899
560
self.client_structure.append("client_structure")
900
561
901
for name, t in inspect.getmembers(
902
type(self), lambda obj: isinstance(obj, property)):
562
for name, t in inspect.getmembers(type(self),
563
lambda obj:
564
isinstance(obj,
565
property)):
903
566
if not name.startswith("_"):
904
567
self.client_structure.append(name)
905
568
926
589
if not quiet:
927
590
logger.info("Disabling client %s", self.name)
928
591
if getattr(self, "disable_initiator_tag", None) is not None:
929
GLib.source_remove(self.disable_initiator_tag)
592
gobject.source_remove(self.disable_initiator_tag)
930
593
self.disable_initiator_tag = None
931
594
self.expires = None
932
595
if getattr(self, "checker_initiator_tag", None) is not None:
933
GLib.source_remove(self.checker_initiator_tag)
596
gobject.source_remove(self.checker_initiator_tag)
934
597
self.checker_initiator_tag = None
935
598
self.stop_checker()
936
599
self.enabled = False
937
600
if not quiet:
938
601
self.send_changedstate()
939
# Do not run this again if called by a GLib.timeout_add
602
# Do not run this again if called by a gobject.timeout_add
940
603
return False
941
604
942
605
def __del__(self):
946
609
# Schedule a new checker to be started an 'interval' from now,
947
610
# and every interval from then on.
948
611
if self.checker_initiator_tag is not None:
949
GLib.source_remove(self.checker_initiator_tag)
950
self.checker_initiator_tag = GLib.timeout_add(
951
int(self.interval.total_seconds() * 1000),
952
self.start_checker)
612
gobject.source_remove(self.checker_initiator_tag)
613
self.checker_initiator_tag = (gobject.timeout_add
614
(self.interval_milliseconds(),
615
self.start_checker))
953
616
# Schedule a disable() when 'timeout' has passed
954
617
if self.disable_initiator_tag is not None:
955
GLib.source_remove(self.disable_initiator_tag)
956
self.disable_initiator_tag = GLib.timeout_add(
957
int(self.timeout.total_seconds() * 1000), self.disable)
618
gobject.source_remove(self.disable_initiator_tag)
619
self.disable_initiator_tag = (gobject.timeout_add
620
(self.timeout_milliseconds(),
621
self.disable))
958
622
# Also start a new checker *right now*.
959
623
self.start_checker()
960
624
961
def checker_callback(self, source, condition, connection,
962
command):
625
def checker_callback(self, pid, condition, command):
963
626
"""The checker has completed, so take appropriate actions."""
964
627
self.checker_callback_tag = None
965
628
self.checker = None
966
# Read return code from connection (see call_pipe)
967
returncode = connection.recv()
968
connection.close()
969
970
if returncode >= 0:
971
self.last_checker_status = returncode
972
self.last_checker_signal = None
629
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
973
631
if self.last_checker_status == 0:
974
632
logger.info("Checker for %(name)s succeeded",
975
633
vars(self))
976
634
self.checked_ok()
977
635
else:
978
logger.info("Checker for %(name)s failed", vars(self))
636
logger.info("Checker for %(name)s failed",
637
vars(self))
979
638
else:
980
639
self.last_checker_status = -1
981
self.last_checker_signal = -returncode
982
640
logger.warning("Checker for %(name)s crashed?",
983
641
vars(self))
984
return False
985
642
986
643
def checked_ok(self):
987
644
"""Assert that the client has been seen, alive and well."""
988
645
self.last_checked_ok = datetime.datetime.utcnow()
989
646
self.last_checker_status = 0
990
self.last_checker_signal = None
991
647
self.bump_timeout()
992
648
993
649
def bump_timeout(self, timeout=None):
995
651
if timeout is None:
996
652
timeout = self.timeout
997
653
if self.disable_initiator_tag is not None:
998
GLib.source_remove(self.disable_initiator_tag)
654
gobject.source_remove(self.disable_initiator_tag)
999
655
self.disable_initiator_tag = None
1000
656
if getattr(self, "enabled", False):
1001
self.disable_initiator_tag = GLib.timeout_add(
1002
int(timeout.total_seconds() * 1000), self.disable)
657
self.disable_initiator_tag = (gobject.timeout_add
658
(timedelta_to_milliseconds
659
(timeout), self.disable))
1003
660
self.expires = datetime.datetime.utcnow() + timeout
1004
661
1005
662
def need_approval(self):
1019
676
# than 'timeout' for the client to be disabled, which is as it
1020
677
# should be.
1021
678
1022
if self.checker is not None and not self.checker.is_alive():
1023
logger.warning("Checker was not alive; joining")
1024
self.checker.join()
1025
self.checker = None
679
# If a checker exists, make sure it is not a zombie
680
try:
681
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
682
except (AttributeError, OSError) as error:
683
if (isinstance(error, OSError)
684
and error.errno != errno.ECHILD):
685
raise error
686
else:
687
if pid:
688
logger.warning("Checker was a zombie")
689
gobject.source_remove(self.checker_callback_tag)
690
self.checker_callback(pid, status,
691
self.current_checker_command)
1026
692
# Start a new checker if needed
1027
693
if self.checker is None:
1028
694
# Escape attributes for the shell
1029
escaped_attrs = {
1030
attr: re.escape(str(getattr(self, attr)))
1031
for attr in self.runtime_expansions }
695
escaped_attrs = dict(
696
(attr, re.escape(unicode(getattr(self, attr))))
697
for attr in
698
self.runtime_expansions)
1032
699
try:
1033
700
command = self.checker_command % escaped_attrs
1034
701
except TypeError as error:
1035
702
logger.error('Could not format string "%s"',
1036
self.checker_command,
703
self.checker_command, exc_info=error)
704
return True # Try again later
705
self.current_checker_command = command
706
try:
707
logger.info("Starting checker %r for %s",
708
command, self.name)
709
# We don't need to redirect stdout and stderr, since
710
# in normal mode, that is already done by daemon(),
711
# and in debug mode we don't want to. (Stdin is
712
# always replaced by /dev/null.)
713
self.checker = subprocess.Popen(command,
714
close_fds=True,
715
shell=True, cwd="/")
716
except OSError as error:
717
logger.error("Failed to start subprocess",
1037
718
exc_info=error)
1038
return True # Try again later
1039
self.current_checker_command = command
1040
logger.info("Starting checker %r for %s", command,
1041
self.name)
1042
# We don't need to redirect stdout and stderr, since
1043
# in normal mode, that is already done by daemon(),
1044
# and in debug mode we don't want to. (Stdin is
1045
# always replaced by /dev/null.)
1046
# The exception is when not debugging but nevertheless
1047
# running in the foreground; use the previously
1048
# created wnull.
1049
popen_args = { "close_fds": True,
1050
"shell": True,
1051
"cwd": "/" }
1052
if (not self.server_settings["debug"]
1053
and self.server_settings["foreground"]):
1054
popen_args.update({"stdout": wnull,
1055
"stderr": wnull })
1056
pipe = multiprocessing.Pipe(duplex = False)
1057
self.checker = multiprocessing.Process(
1058
target = call_pipe,
1059
args = (pipe[1], subprocess.call, command),
1060
kwargs = popen_args)
1061
self.checker.start()
1062
self.checker_callback_tag = GLib.io_add_watch(
1063
pipe[0].fileno(), GLib.IO_IN,
1064
self.checker_callback, pipe[0], command)
1065
# Re-run this periodically if run by GLib.timeout_add
719
self.checker_callback_tag = (gobject.child_watch_add
720
(self.checker.pid,
721
self.checker_callback,
722
data=command))
723
# The checker may have completed before the gobject
724
# watch was added. Check for this.
725
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
726
if pid:
727
gobject.source_remove(self.checker_callback_tag)
728
self.checker_callback(pid, status, command)
729
# Re-run this periodically if run by gobject.timeout_add
1066
730
return True
1067
731
1068
732
def stop_checker(self):
1069
733
"""Force the checker process, if any, to stop."""
1070
734
if self.checker_callback_tag:
1071
GLib.source_remove(self.checker_callback_tag)
735
gobject.source_remove(self.checker_callback_tag)
1072
736
self.checker_callback_tag = None
1073
737
if getattr(self, "checker", None) is None:
1074
738
return
1075
739
logger.debug("Stopping checker for %(name)s", vars(self))
1076
self.checker.terminate()
740
try:
741
self.checker.terminate()
742
#time.sleep(0.5)
743
#if self.checker.poll() is None:
744
# self.checker.kill()
745
except OSError as error:
746
if error.errno != errno.ESRCH: # No such process
747
raise
1077
748
self.checker = None
1078
749
1079
750
1080
def dbus_service_property(dbus_interface,
1081
signature="v",
1082
access="readwrite",
1083
byte_arrays=False):
751
def dbus_service_property(dbus_interface, signature="v",
752
access="readwrite", byte_arrays=False):
1084
753
"""Decorators for marking methods of a DBusObjectWithProperties to
1085
754
become properties on the D-Bus.
1086
755
1095
764
# "Set" method, so we fail early here:
1096
765
if byte_arrays and signature != "ay":
1097
766
raise ValueError("Byte arrays not supported for non-'ay'"
1098
" signature {!r}".format(signature))
1099
767
" signature {0!r}".format(signature))
1100
768
def decorator(func):
1101
769
func._dbus_is_property = True
1102
770
func._dbus_interface = dbus_interface
1107
775
func._dbus_name = func._dbus_name[:-14]
1108
776
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1109
777
return func
1110
1111
778
return decorator
1112
779
1113
780
1122
789
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1123
790
"false"}
1124
791
"""
1125
1126
792
def decorator(func):
1127
793
func._dbus_is_interface = True
1128
794
func._dbus_interface = dbus_interface
1129
795
func._dbus_name = dbus_interface
1130
796
return func
1131
1132
797
return decorator
1133
798
1134
799
1136
801
"""Decorator to annotate D-Bus methods, signals or properties
1137
802
Usage:
1138
803
1139
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1140
"org.freedesktop.DBus.Property."
1141
"EmitsChangedSignal": "false"})
1142
804
@dbus_service_property("org.example.Interface", signature="b",
1143
805
access="r")
806
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property."
808
"EmitsChangedSignal": "false"})
1144
809
def Property_dbus_property(self):
1145
810
return dbus.Boolean(False)
1146
1147
See also the DBusObjectWithAnnotations class.
1148
811
"""
1149
1150
812
def decorator(func):
1151
813
func._dbus_annotations = annotations
1152
814
return func
1153
1154
815
return decorator
1155
816
1156
817
1157
818
class DBusPropertyException(dbus.exceptions.DBusException):
1158
819
"""A base class for D-Bus property-related exceptions
1159
820
"""
1160
pass
821
def __unicode__(self):
822
return unicode(str(self))
1161
823
1162
824
1163
825
class DBusPropertyAccessException(DBusPropertyException):
1172
834
pass
1173
835
1174
836
1175
class DBusObjectWithAnnotations(dbus.service.Object):
1176
"""A D-Bus object with annotations.
837
class DBusObjectWithProperties(dbus.service.Object):
838
"""A D-Bus object with properties.
1177
839
1178
Classes inheriting from this can use the dbus_annotations
1179
decorator to add annotations to methods or signals.
840
Classes inheriting from this can use the dbus_service_property
841
decorator to expose methods as D-Bus properties. It exposes the
842
standard Get(), Set(), and GetAll() methods on the D-Bus.
1180
843
"""
1181
844
1182
845
@staticmethod
1186
849
If called like _is_dbus_thing("method") it returns a function
1187
850
suitable for use as predicate to inspect.getmembers().
1188
851
"""
1189
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
852
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1190
853
False)
1191
854
1192
855
def _get_all_dbus_things(self, thing):
1193
856
"""Returns a generator of (name, attribute) pairs
1194
857
"""
1195
return ((getattr(athing.__get__(self), "_dbus_name", name),
858
return ((getattr(athing.__get__(self), "_dbus_name",
859
name),
1196
860
athing.__get__(self))
1197
861
for cls in self.__class__.__mro__
1198
862
for name, athing in
1199
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1200
1201
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1202
out_signature = "s",
1203
path_keyword = 'object_path',
1204
connection_keyword = 'connection')
1205
def Introspect(self, object_path, connection):
1206
"""Overloading of standard D-Bus method.
1207
1208
Inserts annotation tags on methods and signals.
1209
"""
1210
xmlstring = dbus.service.Object.Introspect(self, object_path,
1211
connection)
1212
try:
1213
document = xml.dom.minidom.parseString(xmlstring)
1214
1215
for if_tag in document.getElementsByTagName("interface"):
1216
# Add annotation tags
1217
for typ in ("method", "signal"):
1218
for tag in if_tag.getElementsByTagName(typ):
1219
annots = dict()
1220
for name, prop in (self.
1221
_get_all_dbus_things(typ)):
1222
if (name == tag.getAttribute("name")
1223
and prop._dbus_interface
1224
== if_tag.getAttribute("name")):
1225
annots.update(getattr(
1226
prop, "_dbus_annotations", {}))
1227
for name, value in annots.items():
1228
ann_tag = document.createElement(
1229
"annotation")
1230
ann_tag.setAttribute("name", name)
1231
ann_tag.setAttribute("value", value)
1232
tag.appendChild(ann_tag)
1233
# Add interface annotation tags
1234
for annotation, value in dict(
1235
itertools.chain.from_iterable(
1236
annotations().items()
1237
for name, annotations
1238
in self._get_all_dbus_things("interface")
1239
if name == if_tag.getAttribute("name")
1240
)).items():
1241
ann_tag = document.createElement("annotation")
1242
ann_tag.setAttribute("name", annotation)
1243
ann_tag.setAttribute("value", value)
1244
if_tag.appendChild(ann_tag)
1245
# Fix argument name for the Introspect method itself
1246
if (if_tag.getAttribute("name")
1247
== dbus.INTROSPECTABLE_IFACE):
1248
for cn in if_tag.getElementsByTagName("method"):
1249
if cn.getAttribute("name") == "Introspect":
1250
for arg in cn.getElementsByTagName("arg"):
1251
if (arg.getAttribute("direction")
1252
== "out"):
1253
arg.setAttribute("name",
1254
"xml_data")
1255
xmlstring = document.toxml("utf-8")
1256
document.unlink()
1257
except (AttributeError, xml.dom.DOMException,
1258
xml.parsers.expat.ExpatError) as error:
1259
logger.error("Failed to override Introspection method",
1260
exc_info=error)
1261
return xmlstring
1262
1263
1264
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1265
"""A D-Bus object with properties.
1266
1267
Classes inheriting from this can use the dbus_service_property
1268
decorator to expose methods as D-Bus properties. It exposes the
1269
standard Get(), Set(), and GetAll() methods on the D-Bus.
1270
"""
863
inspect.getmembers(cls,
864
self._is_dbus_thing(thing)))
1271
865
1272
866
def _get_dbus_property(self, interface_name, property_name):
1273
867
"""Returns a bound method if one exists which is a D-Bus
1274
868
property with the specified name and interface.
1275
869
"""
1276
for cls in self.__class__.__mro__:
1277
for name, value in inspect.getmembers(
1278
cls, self._is_dbus_thing("property")):
870
for cls in self.__class__.__mro__:
871
for name, value in (inspect.getmembers
872
(cls,
873
self._is_dbus_thing("property"))):
1279
874
if (value._dbus_name == property_name
1280
875
and value._dbus_interface == interface_name):
1281
876
return value.__get__(self)
1282
877
1283
878
# No such property
1284
raise DBusPropertyNotFound("{}:{}.{}".format(
1285
self.dbus_object_path, interface_name, property_name))
1286
1287
@classmethod
1288
def _get_all_interface_names(cls):
1289
"""Get a sequence of all interfaces supported by an object"""
1290
return (name for name in set(getattr(getattr(x, attr),
1291
"_dbus_interface", None)
1292
for x in (inspect.getmro(cls))
1293
for attr in dir(x))
1294
if name is not None)
1295
1296
@dbus.service.method(dbus.PROPERTIES_IFACE,
1297
in_signature="ss",
879
raise DBusPropertyNotFound(self.dbus_object_path + ":"
880
+ interface_name + "."
881
+ property_name)
882
883
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1298
884
out_signature="v")
1299
885
def Get(self, interface_name, property_name):
1300
886
"""Standard D-Bus property Get() method, see D-Bus standard.
1318
904
# The byte_arrays option is not supported yet on
1319
905
# signatures other than "ay".
1320
906
if prop._dbus_signature != "ay":
1321
raise ValueError("Byte arrays not supported for non-"
1322
"'ay' signature {!r}"
1323
.format(prop._dbus_signature))
907
raise ValueError
1324
908
value = dbus.ByteArray(b''.join(chr(byte)
1325
909
for byte in value))
1326
910
prop(value)
1327
911
1328
@dbus.service.method(dbus.PROPERTIES_IFACE,
1329
in_signature="s",
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1330
913
out_signature="a{sv}")
1331
914
def GetAll(self, interface_name):
1332
915
"""Standard D-Bus property GetAll() method, see D-Bus
1347
930
if not hasattr(value, "variant_level"):
1348
931
properties[name] = value
1349
932
continue
1350
properties[name] = type(value)(
1351
value, variant_level = value.variant_level + 1)
933
properties[name] = type(value)(value, variant_level=
934
value.variant_level+1)
1352
935
return dbus.Dictionary(properties, signature="sv")
1353
936
1354
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1355
def PropertiesChanged(self, interface_name, changed_properties,
1356
invalidated_properties):
1357
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1358
standard.
1359
"""
1360
pass
1361
1362
937
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1363
938
out_signature="s",
1364
939
path_keyword='object_path',
1368
943
1369
944
Inserts property tags and interface annotation tags.
1370
945
"""
1371
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1372
object_path,
1373
connection)
946
xmlstring = dbus.service.Object.Introspect(self, object_path,
947
connection)
1374
948
try:
1375
949
document = xml.dom.minidom.parseString(xmlstring)
1376
1377
950
def make_tag(document, name, prop):
1378
951
e = document.createElement("property")
1379
952
e.setAttribute("name", name)
1380
953
e.setAttribute("type", prop._dbus_signature)
1381
954
e.setAttribute("access", prop._dbus_access)
1382
955
return e
1383
1384
956
for if_tag in document.getElementsByTagName("interface"):
1385
957
# Add property tags
1386
958
for tag in (make_tag(document, name, prop)
1389
961
if prop._dbus_interface
1390
962
== if_tag.getAttribute("name")):
1391
963
if_tag.appendChild(tag)
1392
# Add annotation tags for properties
1393
for tag in if_tag.getElementsByTagName("property"):
1394
annots = dict()
1395
for name, prop in self._get_all_dbus_things(
1396
"property"):
1397
if (name == tag.getAttribute("name")
1398
and prop._dbus_interface
1399
== if_tag.getAttribute("name")):
1400
annots.update(getattr(
1401
prop, "_dbus_annotations", {}))
1402
for name, value in annots.items():
1403
ann_tag = document.createElement(
1404
"annotation")
1405
ann_tag.setAttribute("name", name)
1406
ann_tag.setAttribute("value", value)
1407
tag.appendChild(ann_tag)
964
# Add annotation tags
965
for typ in ("method", "signal", "property"):
966
for tag in if_tag.getElementsByTagName(typ):
967
annots = dict()
968
for name, prop in (self.
969
_get_all_dbus_things(typ)):
970
if (name == tag.getAttribute("name")
971
and prop._dbus_interface
972
== if_tag.getAttribute("name")):
973
annots.update(getattr
974
(prop,
975
"_dbus_annotations",
976
{}))
977
for name, value in annots.iteritems():
978
ann_tag = document.createElement(
979
"annotation")
980
ann_tag.setAttribute("name", name)
981
ann_tag.setAttribute("value", value)
982
tag.appendChild(ann_tag)
983
# Add interface annotation tags
984
for annotation, value in dict(
985
itertools.chain.from_iterable(
986
annotations().iteritems()
987
for name, annotations in
988
self._get_all_dbus_things("interface")
989
if name == if_tag.getAttribute("name")
990
)).iteritems():
991
ann_tag = document.createElement("annotation")
992
ann_tag.setAttribute("name", annotation)
993
ann_tag.setAttribute("value", value)
994
if_tag.appendChild(ann_tag)
1408
995
# Add the names to the return values for the
1409
996
# "org.freedesktop.DBus.Properties" methods
1410
997
if (if_tag.getAttribute("name")
1428
1015
exc_info=error)
1429
1016
return xmlstring
1430
1017
1431
try:
1432
dbus.OBJECT_MANAGER_IFACE
1433
except AttributeError:
1434
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1435
1436
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1437
"""A D-Bus object with an ObjectManager.
1438
1439
Classes inheriting from this exposes the standard
1440
GetManagedObjects call and the InterfacesAdded and
1441
InterfacesRemoved signals on the standard
1442
"org.freedesktop.DBus.ObjectManager" interface.
1443
1444
Note: No signals are sent automatically; they must be sent
1445
manually.
1446
"""
1447
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1448
out_signature = "a{oa{sa{sv}}}")
1449
def GetManagedObjects(self):
1450
"""This function must be overridden"""
1451
raise NotImplementedError()
1452
1453
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1454
signature = "oa{sa{sv}}")
1455
def InterfacesAdded(self, object_path, interfaces_and_properties):
1456
pass
1457
1458
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1459
def InterfacesRemoved(self, object_path, interfaces):
1460
pass
1461
1462
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1463
out_signature = "s",
1464
path_keyword = 'object_path',
1465
connection_keyword = 'connection')
1466
def Introspect(self, object_path, connection):
1467
"""Overloading of standard D-Bus method.
1468
1469
Override return argument name of GetManagedObjects to be
1470
"objpath_interfaces_and_properties"
1471
"""
1472
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1473
object_path,
1474
connection)
1475
try:
1476
document = xml.dom.minidom.parseString(xmlstring)
1477
1478
for if_tag in document.getElementsByTagName("interface"):
1479
# Fix argument name for the GetManagedObjects method
1480
if (if_tag.getAttribute("name")
1481
== dbus.OBJECT_MANAGER_IFACE):
1482
for cn in if_tag.getElementsByTagName("method"):
1483
if (cn.getAttribute("name")
1484
== "GetManagedObjects"):
1485
for arg in cn.getElementsByTagName("arg"):
1486
if (arg.getAttribute("direction")
1487
== "out"):
1488
arg.setAttribute(
1489
"name",
1490
"objpath_interfaces"
1491
"_and_properties")
1492
xmlstring = document.toxml("utf-8")
1493
document.unlink()
1494
except (AttributeError, xml.dom.DOMException,
1495
xml.parsers.expat.ExpatError) as error:
1496
logger.error("Failed to override Introspection method",
1497
exc_info = error)
1498
return xmlstring
1499
1500
def datetime_to_dbus(dt, variant_level=0):
1018
1019
def datetime_to_dbus (dt, variant_level=0):
1501
1020
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1502
1021
if dt is None:
1503
1022
return dbus.String("", variant_level = variant_level)
1504
return dbus.String(dt.isoformat(), variant_level=variant_level)
1023
return dbus.String(dt.isoformat(),
1024
variant_level=variant_level)
1505
1025
1506
1026
1507
1027
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1510
1030
interface names according to the "alt_interface_names" mapping.
1511
1031
Usage:
1512
1032
1513
@alternate_dbus_interfaces({"org.example.Interface":
1514
"net.example.AlternateInterface"})
1033
@alternate_dbus_names({"org.example.Interface":
1034
"net.example.AlternateInterface"})
1515
1035
class SampleDBusObject(dbus.service.Object):
1516
1036
@dbus.service.method("org.example.Interface")
1517
1037
def SampleDBusMethod():
1527
1047
(from DBusObjectWithProperties) and interfaces (from the
1528
1048
dbus_interface_annotations decorator).
1529
1049
"""
1530
1531
1050
def wrapper(cls):
1532
1051
for orig_interface_name, alt_interface_name in (
1533
alt_interface_names.items()):
1052
alt_interface_names.iteritems()):
1534
1053
attr = {}
1535
1054
interface_names = set()
1536
1055
# Go though all attributes of the class
1538
1057
# Ignore non-D-Bus attributes, and D-Bus attributes
1539
1058
# with the wrong interface name
1540
1059
if (not hasattr(attribute, "_dbus_interface")
1541
or not attribute._dbus_interface.startswith(
1542
orig_interface_name)):
1060
or not attribute._dbus_interface
1061
.startswith(orig_interface_name)):
1543
1062
continue
1544
1063
# Create an alternate D-Bus interface name based on
1545
1064
# the current name
1546
alt_interface = attribute._dbus_interface.replace(
1547
orig_interface_name, alt_interface_name)
1065
alt_interface = (attribute._dbus_interface
1066
.replace(orig_interface_name,
1067
alt_interface_name))
1548
1068
interface_names.add(alt_interface)
1549
1069
# Is this a D-Bus signal?
1550
1070
if getattr(attribute, "_dbus_is_signal", False):
1551
# Extract the original non-method undecorated
1552
# function by black magic
1553
if sys.version_info.major == 2:
1554
nonmethod_func = (dict(
1071
# Extract the original non-method function by
1072
# black magic
1073
nonmethod_func = (dict(
1555
1074
zip(attribute.func_code.co_freevars,
1556
attribute.__closure__))
1557
["func"].cell_contents)
1558
else:
1559
nonmethod_func = (dict(
1560
zip(attribute.__code__.co_freevars,
1561
attribute.__closure__))
1562
["func"].cell_contents)
1075
attribute.__closure__))["func"]
1076
.cell_contents)
1563
1077
# Create a new, but exactly alike, function
1564
1078
# object, and decorate it to be a new D-Bus signal
1565
1079
# with the alternate D-Bus interface name
1566
new_function = copy_function(nonmethod_func)
1567
new_function = (dbus.service.signal(
1568
alt_interface,
1569
attribute._dbus_signature)(new_function))
1080
new_function = (dbus.service.signal
1081
(alt_interface,
1082
attribute._dbus_signature)
1083
(types.FunctionType(
1084
nonmethod_func.func_code,
1085
nonmethod_func.func_globals,
1086
nonmethod_func.func_name,
1087
nonmethod_func.func_defaults,
1088
nonmethod_func.func_closure)))
1570
1089
# Copy annotations, if any
1571
1090
try:
1572
new_function._dbus_annotations = dict(
1573
attribute._dbus_annotations)
1091
new_function._dbus_annotations = (
1092
dict(attribute._dbus_annotations))
1574
1093
except AttributeError:
1575
1094
pass
1576
1095
# Define a creator of a function to call both the
1581
1100
"""This function is a scope container to pass
1582
1101
func1 and func2 to the "call_both" function
1583
1102
outside of its arguments"""
1584
1585
@functools.wraps(func2)
1586
1103
def call_both(*args, **kwargs):
1587
1104
"""This function will emit two D-Bus
1588
1105
signals by calling func1 and func2"""
1589
1106
func1(*args, **kwargs)
1590
1107
func2(*args, **kwargs)
1591
# Make wrapper function look like a D-Bus signal
1592
for name, attr in inspect.getmembers(func2):
1593
if name.startswith("_dbus_"):
1594
setattr(call_both, name, attr)
1595
1596
1108
return call_both
1597
1109
# Create the "call_both" function and add it to
1598
1110
# the class
1603
1115
# object. Decorate it to be a new D-Bus method
1604
1116
# with the alternate D-Bus interface name. Add it
1605
1117
# to the class.
1606
attr[attrname] = (
1607
dbus.service.method(
1608
alt_interface,
1609
attribute._dbus_in_signature,
1610
attribute._dbus_out_signature)
1611
(copy_function(attribute)))
1118
attr[attrname] = (dbus.service.method
1119
(alt_interface,
1120
attribute._dbus_in_signature,
1121
attribute._dbus_out_signature)
1122
(types.FunctionType
1123
(attribute.func_code,
1124
attribute.func_globals,
1125
attribute.func_name,
1126
attribute.func_defaults,
1127
attribute.func_closure)))
1612
1128
# Copy annotations, if any
1613
1129
try:
1614
attr[attrname]._dbus_annotations = dict(
1615
attribute._dbus_annotations)
1130
attr[attrname]._dbus_annotations = (
1131
dict(attribute._dbus_annotations))
1616
1132
except AttributeError:
1617
1133
pass
1618
1134
# Is this a D-Bus property?
1621
1137
# object, and decorate it to be a new D-Bus
1622
1138
# property with the alternate D-Bus interface
1623
1139
# name. Add it to the class.
1624
attr[attrname] = (dbus_service_property(
1625
alt_interface, attribute._dbus_signature,
1626
attribute._dbus_access,
1627
attribute._dbus_get_args_options
1628
["byte_arrays"])
1629
(copy_function(attribute)))
1140
attr[attrname] = (dbus_service_property
1141
(alt_interface,
1142
attribute._dbus_signature,
1143
attribute._dbus_access,
1144
attribute
1145
._dbus_get_args_options
1146
["byte_arrays"])
1147
(types.FunctionType
1148
(attribute.func_code,
1149
attribute.func_globals,
1150
attribute.func_name,
1151
attribute.func_defaults,
1152
attribute.func_closure)))
1630
1153
# Copy annotations, if any
1631
1154
try:
1632
attr[attrname]._dbus_annotations = dict(
1633
attribute._dbus_annotations)
1155
attr[attrname]._dbus_annotations = (
1156
dict(attribute._dbus_annotations))
1634
1157
except AttributeError:
1635
1158
pass
1636
1159
# Is this a D-Bus interface?
1639
1162
# object. Decorate it to be a new D-Bus interface
1640
1163
# with the alternate D-Bus interface name. Add it
1641
1164
# to the class.
1642
attr[attrname] = (
1643
dbus_interface_annotations(alt_interface)
1644
(copy_function(attribute)))
1165
attr[attrname] = (dbus_interface_annotations
1166
(alt_interface)
1167
(types.FunctionType
1168
(attribute.func_code,
1169
attribute.func_globals,
1170
attribute.func_name,
1171
attribute.func_defaults,
1172
attribute.func_closure)))
1645
1173
if deprecate:
1646
1174
# Deprecate all alternate interfaces
1647
iname="_AlternateDBusNames_interface_annotation{}"
1175
iname="_AlternateDBusNames_interface_annotation{0}"
1648
1176
for interface_name in interface_names:
1649
1650
1177
@dbus_interface_annotations(interface_name)
1651
1178
def func(self):
1652
1179
return { "org.freedesktop.DBus.Deprecated":
1653
"true" }
1180
"true" }
1654
1181
# Find an unused name
1655
1182
for aname in (iname.format(i)
1656
1183
for i in itertools.count()):
1660
1187
if interface_names:
1661
1188
# Replace the class with a new subclass of it with
1662
1189
# methods, signals, etc. as created above.
1663
if sys.version_info.major == 2:
1664
cls = type(b"{}Alternate".format(cls.__name__),
1665
(cls, ), attr)
1666
else:
1667
cls = type("{}Alternate".format(cls.__name__),
1668
(cls, ), attr)
1190
cls = type(b"{0}Alternate".format(cls.__name__),
1191
(cls,), attr)
1669
1192
return cls
1670
1671
1193
return wrapper
1672
1194
1673
1195
1674
1196
@alternate_dbus_interfaces({"se.recompile.Mandos":
1675
"se.bsnet.fukt.Mandos"})
1197
"se.bsnet.fukt.Mandos"})
1676
1198
class ClientDBus(Client, DBusObjectWithProperties):
1677
1199
"""A Client class using D-Bus
1678
1200
1682
1204
"""
1683
1205
1684
1206
runtime_expansions = (Client.runtime_expansions
1685
+ ("dbus_object_path", ))
1686
1687
_interface = "se.recompile.Mandos.Client"
1207
+ ("dbus_object_path",))
1688
1208
1689
1209
# dbus.service.Object doesn't use super(), so we can't either.
1690
1210
1693
1213
Client.__init__(self, *args, **kwargs)
1694
1214
# Only now, when this client is initialized, can it show up on
1695
1215
# the D-Bus
1696
client_object_name = str(self.name).translate(
1216
client_object_name = unicode(self.name).translate(
1697
1217
{ord("."): ord("_"),
1698
1218
ord("-"): ord("_")})
1699
self.dbus_object_path = dbus.ObjectPath(
1700
"/clients/" + client_object_name)
1219
self.dbus_object_path = (dbus.ObjectPath
1220
("/clients/" + client_object_name))
1701
1221
DBusObjectWithProperties.__init__(self, self.bus,
1702
1222
self.dbus_object_path)
1703
1223
1704
def notifychangeproperty(transform_func, dbus_name,
1705
type_func=lambda x: x,
1706
variant_level=1,
1707
invalidate_only=False,
1708
_interface=_interface):
1224
def notifychangeproperty(transform_func,
1225
dbus_name, type_func=lambda x: x,
1226
variant_level=1):
1709
1227
""" Modify a variable so that it's a property which announces
1710
1228
its changes to DBus.
1711
1229
1716
1234
to the D-Bus. Default: no transform
1717
1235
variant_level: D-Bus variant level. Default: 1
1718
1236
"""
1719
attrname = "_{}".format(dbus_name)
1720
1237
attrname = "_{0}".format(dbus_name)
1721
1238
def setter(self, value):
1722
1239
if hasattr(self, "dbus_object_path"):
1723
1240
if (not hasattr(self, attrname) or
1724
1241
type_func(getattr(self, attrname, None))
1725
1242
!= type_func(value)):
1726
if invalidate_only:
1727
self.PropertiesChanged(
1728
_interface, dbus.Dictionary(),
1729
dbus.Array((dbus_name, )))
1730
else:
1731
dbus_value = transform_func(
1732
type_func(value),
1733
variant_level = variant_level)
1734
self.PropertyChanged(dbus.String(dbus_name),
1735
dbus_value)
1736
self.PropertiesChanged(
1737
_interface,
1738
dbus.Dictionary({ dbus.String(dbus_name):
1739
dbus_value }),
1740
dbus.Array())
1243
dbus_value = transform_func(type_func(value),
1244
variant_level
1245
=variant_level)
1246
self.PropertyChanged(dbus.String(dbus_name),
1247
dbus_value)
1741
1248
setattr(self, attrname, value)
1742
1249
1743
1250
return property(lambda self: getattr(self, attrname), setter)
1749
1256
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1750
1257
last_enabled = notifychangeproperty(datetime_to_dbus,
1751
1258
"LastEnabled")
1752
checker = notifychangeproperty(
1753
dbus.Boolean, "CheckerRunning",
1754
type_func = lambda checker: checker is not None)
1259
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1260
type_func = lambda checker:
1261
checker is not None)
1755
1262
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1756
1263
"LastCheckedOK")
1757
1264
last_checker_status = notifychangeproperty(dbus.Int16,
1760
1267
datetime_to_dbus, "LastApprovalRequest")
1761
1268
approved_by_default = notifychangeproperty(dbus.Boolean,
1762
1269
"ApprovedByDefault")
1763
approval_delay = notifychangeproperty(
1764
dbus.UInt64, "ApprovalDelay",
1765
type_func = lambda td: td.total_seconds() * 1000)
1270
approval_delay = notifychangeproperty(dbus.UInt64,
1271
"ApprovalDelay",
1272
type_func =
1273
timedelta_to_milliseconds)
1766
1274
approval_duration = notifychangeproperty(
1767
1275
dbus.UInt64, "ApprovalDuration",
1768
type_func = lambda td: td.total_seconds() * 1000)
1276
type_func = timedelta_to_milliseconds)
1769
1277
host = notifychangeproperty(dbus.String, "Host")
1770
timeout = notifychangeproperty(
1771
dbus.UInt64, "Timeout",
1772
type_func = lambda td: td.total_seconds() * 1000)
1278
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1279
type_func =
1280
timedelta_to_milliseconds)
1773
1281
extended_timeout = notifychangeproperty(
1774
1282
dbus.UInt64, "ExtendedTimeout",
1775
type_func = lambda td: td.total_seconds() * 1000)
1776
interval = notifychangeproperty(
1777
dbus.UInt64, "Interval",
1778
type_func = lambda td: td.total_seconds() * 1000)
1283
type_func = timedelta_to_milliseconds)
1284
interval = notifychangeproperty(dbus.UInt64,
1285
"Interval",
1286
type_func =
1287
timedelta_to_milliseconds)
1779
1288
checker_command = notifychangeproperty(dbus.String, "Checker")
1780
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1781
invalidate_only=True)
1782
1289
1783
1290
del notifychangeproperty
1784
1291
1791
1298
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1792
1299
Client.__del__(self, *args, **kwargs)
1793
1300
1794
def checker_callback(self, source, condition,
1795
connection, command, *args, **kwargs):
1796
ret = Client.checker_callback(self, source, condition,
1797
connection, command, *args,
1798
**kwargs)
1799
exitstatus = self.last_checker_status
1800
if exitstatus >= 0:
1301
def checker_callback(self, pid, condition, command,
1302
*args, **kwargs):
1303
self.checker_callback_tag = None
1304
self.checker = None
1305
if os.WIFEXITED(condition):
1306
exitstatus = os.WEXITSTATUS(condition)
1801
1307
# Emit D-Bus signal
1802
1308
self.CheckerCompleted(dbus.Int16(exitstatus),
1803
# This is specific to GNU libC
1804
dbus.Int64(exitstatus << 8),
1309
dbus.Int64(condition),
1805
1310
dbus.String(command))
1806
1311
else:
1807
1312
# Emit D-Bus signal
1808
1313
self.CheckerCompleted(dbus.Int16(-1),
1809
dbus.Int64(
1810
# This is specific to GNU libC
1811
(exitstatus << 8)
1812
| self.last_checker_signal),
1314
dbus.Int64(condition),
1813
1315
dbus.String(command))
1814
return ret
1316
1317
return Client.checker_callback(self, pid, condition, command,
1318
*args, **kwargs)
1815
1319
1816
1320
def start_checker(self, *args, **kwargs):
1817
old_checker_pid = getattr(self.checker, "pid", None)
1321
old_checker = self.checker
1322
if self.checker is not None:
1323
old_checker_pid = self.checker.pid
1324
else:
1325
old_checker_pid = None
1818
1326
r = Client.start_checker(self, *args, **kwargs)
1819
1327
# Only if new checker process was started
1820
1328
if (self.checker is not None
1829
1337
1830
1338
def approve(self, value=True):
1831
1339
self.approved = value
1832
GLib.timeout_add(int(self.approval_duration.total_seconds()
1833
* 1000), self._reset_approved)
1340
gobject.timeout_add(timedelta_to_milliseconds
1341
(self.approval_duration),
1342
self._reset_approved)
1834
1343
self.send_changedstate()
1835
1344
1836
1345
## D-Bus methods, signals & properties
1346
_interface = "se.recompile.Mandos.Client"
1837
1347
1838
1348
## Interfaces
1839
1349
1350
@dbus_interface_annotations(_interface)
1351
def _foo(self):
1352
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1353
"false"}
1354
1840
1355
## Signals
1841
1356
1842
1357
# CheckerCompleted - signal
1852
1367
pass
1853
1368
1854
1369
# PropertyChanged - signal
1855
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1856
1370
@dbus.service.signal(_interface, signature="sv")
1857
1371
def PropertyChanged(self, property, value):
1858
1372
"D-Bus signal"
1892
1406
self.checked_ok()
1893
1407
1894
1408
# Enable - method
1895
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1896
1409
@dbus.service.method(_interface)
1897
1410
def Enable(self):
1898
1411
"D-Bus method"
1899
1412
self.enable()
1900
1413
1901
1414
# StartChecker - method
1902
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1903
1415
@dbus.service.method(_interface)
1904
1416
def StartChecker(self):
1905
1417
"D-Bus method"
1906
1418
self.start_checker()
1907
1419
1908
1420
# Disable - method
1909
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1910
1421
@dbus.service.method(_interface)
1911
1422
def Disable(self):
1912
1423
"D-Bus method"
1913
1424
self.disable()
1914
1425
1915
1426
# StopChecker - method
1916
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1917
1427
@dbus.service.method(_interface)
1918
1428
def StopChecker(self):
1919
1429
self.stop_checker()
1926
1436
return dbus.Boolean(bool(self.approvals_pending))
1927
1437
1928
1438
# ApprovedByDefault - property
1929
@dbus_service_property(_interface,
1930
signature="b",
1439
@dbus_service_property(_interface, signature="b",
1931
1440
access="readwrite")
1932
1441
def ApprovedByDefault_dbus_property(self, value=None):
1933
1442
if value is None: # get
1935
1444
self.approved_by_default = bool(value)
1936
1445
1937
1446
# ApprovalDelay - property
1938
@dbus_service_property(_interface,
1939
signature="t",
1447
@dbus_service_property(_interface, signature="t",
1940
1448
access="readwrite")
1941
1449
def ApprovalDelay_dbus_property(self, value=None):
1942
1450
if value is None: # get
1943
return dbus.UInt64(self.approval_delay.total_seconds()
1944
* 1000)
1451
return dbus.UInt64(self.approval_delay_milliseconds())
1945
1452
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1946
1453
1947
1454
# ApprovalDuration - property
1948
@dbus_service_property(_interface,
1949
signature="t",
1455
@dbus_service_property(_interface, signature="t",
1950
1456
access="readwrite")
1951
1457
def ApprovalDuration_dbus_property(self, value=None):
1952
1458
if value is None: # get
1953
return dbus.UInt64(self.approval_duration.total_seconds()
1954
* 1000)
1459
return dbus.UInt64(timedelta_to_milliseconds(
1460
self.approval_duration))
1955
1461
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1956
1462
1957
1463
# Name - property
1958
@dbus_annotations(
1959
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1960
1464
@dbus_service_property(_interface, signature="s", access="read")
1961
1465
def Name_dbus_property(self):
1962
1466
return dbus.String(self.name)
1963
1467
1964
1468
# Fingerprint - property
1965
@dbus_annotations(
1966
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1967
1469
@dbus_service_property(_interface, signature="s", access="read")
1968
1470
def Fingerprint_dbus_property(self):
1969
1471
return dbus.String(self.fingerprint)
1970
1472
1971
1473
# Host - property
1972
@dbus_service_property(_interface,
1973
signature="s",
1474
@dbus_service_property(_interface, signature="s",
1974
1475
access="readwrite")
1975
1476
def Host_dbus_property(self, value=None):
1976
1477
if value is None: # get
1977
1478
return dbus.String(self.host)
1978
self.host = str(value)
1479
self.host = unicode(value)
1979
1480
1980
1481
# Created - property
1981
@dbus_annotations(
1982
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1983
1482
@dbus_service_property(_interface, signature="s", access="read")
1984
1483
def Created_dbus_property(self):
1985
1484
return datetime_to_dbus(self.created)
1990
1489
return datetime_to_dbus(self.last_enabled)
1991
1490
1992
1491
# Enabled - property
1993
@dbus_service_property(_interface,
1994
signature="b",
1492
@dbus_service_property(_interface, signature="b",
1995
1493
access="readwrite")
1996
1494
def Enabled_dbus_property(self, value=None):
1997
1495
if value is None: # get
2002
1500
self.disable()
2003
1501
2004
1502
# LastCheckedOK - property
2005
@dbus_service_property(_interface,
2006
signature="s",
1503
@dbus_service_property(_interface, signature="s",
2007
1504
access="readwrite")
2008
1505
def LastCheckedOK_dbus_property(self, value=None):
2009
1506
if value is not None:
2012
1509
return datetime_to_dbus(self.last_checked_ok)
2013
1510
2014
1511
# LastCheckerStatus - property
2015
@dbus_service_property(_interface, signature="n", access="read")
1512
@dbus_service_property(_interface, signature="n",
1513
access="read")
2016
1514
def LastCheckerStatus_dbus_property(self):
2017
1515
return dbus.Int16(self.last_checker_status)
2018
1516
2027
1525
return datetime_to_dbus(self.last_approval_request)
2028
1526
2029
1527
# Timeout - property
2030
@dbus_service_property(_interface,
2031
signature="t",
1528
@dbus_service_property(_interface, signature="t",
2032
1529
access="readwrite")
2033
1530
def Timeout_dbus_property(self, value=None):
2034
1531
if value is None: # get
2035
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1532
return dbus.UInt64(self.timeout_milliseconds())
2036
1533
old_timeout = self.timeout
2037
1534
self.timeout = datetime.timedelta(0, 0, 0, value)
2038
1535
# Reschedule disabling
2046
1543
if (getattr(self, "disable_initiator_tag", None)
2047
1544
is None):
2048
1545
return
2049
GLib.source_remove(self.disable_initiator_tag)
2050
self.disable_initiator_tag = GLib.timeout_add(
2051
int((self.expires - now).total_seconds() * 1000),
2052
self.disable)
1546
gobject.source_remove(self.disable_initiator_tag)
1547
self.disable_initiator_tag = (
1548
gobject.timeout_add(
1549
timedelta_to_milliseconds(self.expires - now),
1550
self.disable))
2053
1551
2054
1552
# ExtendedTimeout - property
2055
@dbus_service_property(_interface,
2056
signature="t",
1553
@dbus_service_property(_interface, signature="t",
2057
1554
access="readwrite")
2058
1555
def ExtendedTimeout_dbus_property(self, value=None):
2059
1556
if value is None: # get
2060
return dbus.UInt64(self.extended_timeout.total_seconds()
2061
* 1000)
1557
return dbus.UInt64(self.extended_timeout_milliseconds())
2062
1558
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2063
1559
2064
1560
# Interval - property
2065
@dbus_service_property(_interface,
2066
signature="t",
1561
@dbus_service_property(_interface, signature="t",
2067
1562
access="readwrite")
2068
1563
def Interval_dbus_property(self, value=None):
2069
1564
if value is None: # get
2070
return dbus.UInt64(self.interval.total_seconds() * 1000)
1565
return dbus.UInt64(self.interval_milliseconds())
2071
1566
self.interval = datetime.timedelta(0, 0, 0, value)
2072
1567
if getattr(self, "checker_initiator_tag", None) is None:
2073
1568
return
2074
1569
if self.enabled:
2075
1570
# Reschedule checker run
2076
GLib.source_remove(self.checker_initiator_tag)
2077
self.checker_initiator_tag = GLib.timeout_add(
2078
value, self.start_checker)
2079
self.start_checker() # Start one now, too
1571
gobject.source_remove(self.checker_initiator_tag)
1572
self.checker_initiator_tag = (gobject.timeout_add
1573
(value, self.start_checker))
1574
self.start_checker() # Start one now, too
2080
1575
2081
1576
# Checker - property
2082
@dbus_service_property(_interface,
2083
signature="s",
1577
@dbus_service_property(_interface, signature="s",
2084
1578
access="readwrite")
2085
1579
def Checker_dbus_property(self, value=None):
2086
1580
if value is None: # get
2087
1581
return dbus.String(self.checker_command)
2088
self.checker_command = str(value)
1582
self.checker_command = unicode(value)
2089
1583
2090
1584
# CheckerRunning - property
2091
@dbus_service_property(_interface,
2092
signature="b",
1585
@dbus_service_property(_interface, signature="b",
2093
1586
access="readwrite")
2094
1587
def CheckerRunning_dbus_property(self, value=None):
2095
1588
if value is None: # get
2100
1593
self.stop_checker()
2101
1594
2102
1595
# ObjectPath - property
2103
@dbus_annotations(
2104
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2105
"org.freedesktop.DBus.Deprecated": "true"})
2106
1596
@dbus_service_property(_interface, signature="o", access="read")
2107
1597
def ObjectPath_dbus_property(self):
2108
1598
return self.dbus_object_path # is already a dbus.ObjectPath
2109
1599
2110
1600
# Secret = property
2111
@dbus_annotations(
2112
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2113
"invalidates"})
2114
@dbus_service_property(_interface,
2115
signature="ay",
2116
access="write",
2117
byte_arrays=True)
1601
@dbus_service_property(_interface, signature="ay",
1602
access="write", byte_arrays=True)
2118
1603
def Secret_dbus_property(self, value):
2119
self.secret = bytes(value)
1604
self.secret = str(value)
2120
1605
2121
1606
del _interface
2122
1607
2126
1611
self._pipe = child_pipe
2127
1612
self._pipe.send(('init', fpr, address))
2128
1613
if not self._pipe.recv():
2129
raise KeyError(fpr)
1614
raise KeyError()
2130
1615
2131
1616
def __getattribute__(self, name):
2132
1617
if name == '_pipe':
2136
1621
if data[0] == 'data':
2137
1622
return data[1]
2138
1623
if data[0] == 'function':
2139
2140
1624
def func(*args, **kwargs):
2141
1625
self._pipe.send(('funcall', name, args, kwargs))
2142
1626
return self._pipe.recv()[1]
2143
2144
1627
return func
2145
1628
2146
1629
def __setattr__(self, name, value):
2158
1641
def handle(self):
2159
1642
with contextlib.closing(self.server.child_pipe) as child_pipe:
2160
1643
logger.info("TCP connection from: %s",
2161
str(self.client_address))
1644
unicode(self.client_address))
2162
1645
logger.debug("Pipe FD: %d",
2163
1646
self.server.child_pipe.fileno())
2164
1647
2165
session = gnutls.ClientSession(self.request)
1648
session = (gnutls.connection
1649
.ClientSession(self.request,
1650
gnutls.connection
1651
.X509Credentials()))
1652
1653
# Note: gnutls.connection.X509Credentials is really a
1654
# generic GnuTLS certificate credentials object so long as
1655
# no X.509 keys are added to it. Therefore, we can use it
1656
# here despite using OpenPGP certificates.
2166
1657
2167
1658
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2168
1659
# "+AES-256-CBC", "+SHA1",
2172
1663
priority = self.server.gnutls_priority
2173
1664
if priority is None:
2174
1665
priority = "NORMAL"
2175
gnutls.priority_set_direct(session._c_object, priority,
2176
None)
1666
(gnutls.library.functions
1667
.gnutls_priority_set_direct(session._c_object,
1668
priority, None))
2177
1669
2178
1670
# Start communication using the Mandos protocol
2179
1671
# Get protocol number
2181
1673
logger.debug("Protocol version: %r", line)
2182
1674
try:
2183
1675
if int(line.strip().split()[0]) > 1:
2184
raise RuntimeError(line)
1676
raise RuntimeError
2185
1677
except (ValueError, IndexError, RuntimeError) as error:
2186
1678
logger.error("Unknown protocol version: %s", error)
2187
1679
return
2189
1681
# Start GnuTLS connection
2190
1682
try:
2191
1683
session.handshake()
2192
except gnutls.Error as error:
1684
except gnutls.errors.GNUTLSError as error:
2193
1685
logger.warning("Handshake failed: %s", error)
2194
1686
# Do not run session.bye() here: the session is not
2195
1687
# established. Just abandon the request.
2199
1691
approval_required = False
2200
1692
try:
2201
1693
try:
2202
fpr = self.fingerprint(
2203
self.peer_certificate(session))
2204
except (TypeError, gnutls.Error) as error:
1694
fpr = self.fingerprint(self.peer_certificate
1695
(session))
1696
except (TypeError,
1697
gnutls.errors.GNUTLSError) as error:
2205
1698
logger.warning("Bad certificate: %s", error)
2206
1699
return
2207
1700
logger.debug("Fingerprint: %s", fpr)
2220
1713
while True:
2221
1714
if not client.enabled:
2222
1715
logger.info("Client %s is disabled",
2223
client.name)
1716
client.name)
2224
1717
if self.server.use_dbus:
2225
1718
# Emit D-Bus signal
2226
1719
client.Rejected("Disabled")
2235
1728
if self.server.use_dbus:
2236
1729
# Emit D-Bus signal
2237
1730
client.NeedApproval(
2238
client.approval_delay.total_seconds()
2239
* 1000, client.approved_by_default)
1731
client.approval_delay_milliseconds(),
1732
client.approved_by_default)
2240
1733
else:
2241
1734
logger.warning("Client %s was not approved",
2242
1735
client.name)
2248
1741
#wait until timeout or approved
2249
1742
time = datetime.datetime.now()
2250
1743
client.changedstate.acquire()
2251
client.changedstate.wait(delay.total_seconds())
1744
client.changedstate.wait(
1745
float(timedelta_to_milliseconds(delay)
1746
/ 1000))
2252
1747
client.changedstate.release()
2253
1748
time2 = datetime.datetime.now()
2254
1749
if (time2 - time) >= delay:
2265
1760
else:
2266
1761
delay -= time2 - time
2267
1762
2268
try:
2269
session.send(client.secret)
2270
except gnutls.Error as error:
2271
logger.warning("gnutls send failed",
2272
exc_info = error)
2273
return
1763
sent_size = 0
1764
while sent_size < len(client.secret):
1765
try:
1766
sent = session.send(client.secret[sent_size:])
1767
except gnutls.errors.GNUTLSError as error:
1768
logger.warning("gnutls send failed",
1769
exc_info=error)
1770
return
1771
logger.debug("Sent: %d, remaining: %d",
1772
sent, len(client.secret)
1773
- (sent_size + sent))
1774
sent_size += sent
2274
1775
2275
1776
logger.info("Sending secret to %s", client.name)
2276
1777
# bump the timeout using extended_timeout
2284
1785
client.approvals_pending -= 1
2285
1786
try:
2286
1787
session.bye()
2287
except gnutls.Error as error:
1788
except gnutls.errors.GNUTLSError as error:
2288
1789
logger.warning("GnuTLS bye failed",
2289
1790
exc_info=error)
2290
1791
2292
1793
def peer_certificate(session):
2293
1794
"Return the peer's OpenPGP certificate as a bytestring"
2294
1795
# If not an OpenPGP certificate...
2295
if (gnutls.certificate_type_get(session._c_object)
2296
!= gnutls.CRT_OPENPGP):
2297
# ...return invalid data
2298
return b""
1796
if (gnutls.library.functions
1797
.gnutls_certificate_type_get(session._c_object)
1798
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1799
# ...do the normal thing
1800
return session.peer_certificate
2299
1801
list_size = ctypes.c_uint(1)
2300
cert_list = (gnutls.certificate_get_peers
1802
cert_list = (gnutls.library.functions
1803
.gnutls_certificate_get_peers
2301
1804
(session._c_object, ctypes.byref(list_size)))
2302
1805
if not bool(cert_list) and list_size.value != 0:
2303
raise gnutls.Error("error getting peer certificate")
1806
raise gnutls.errors.GNUTLSError("error getting peer"
1807
" certificate")
2304
1808
if list_size.value == 0:
2305
1809
return None
2306
1810
cert = cert_list[0]
2310
1814
def fingerprint(openpgp):
2311
1815
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2312
1816
# New GnuTLS "datum" with the OpenPGP public key
2313
datum = gnutls.datum_t(
2314
ctypes.cast(ctypes.c_char_p(openpgp),
2315
ctypes.POINTER(ctypes.c_ubyte)),
2316
ctypes.c_uint(len(openpgp)))
1817
datum = (gnutls.library.types
1818
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1819
ctypes.POINTER
1820
(ctypes.c_ubyte)),
1821
ctypes.c_uint(len(openpgp))))
2317
1822
# New empty GnuTLS certificate
2318
crt = gnutls.openpgp_crt_t()
2319
gnutls.openpgp_crt_init(ctypes.byref(crt))
1823
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1824
(gnutls.library.functions
1825
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2320
1826
# Import the OpenPGP public key into the certificate
2321
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2322
gnutls.OPENPGP_FMT_RAW)
1827
(gnutls.library.functions
1828
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1829
gnutls.library.constants
1830
.GNUTLS_OPENPGP_FMT_RAW))
2323
1831
# Verify the self signature in the key
2324
1832
crtverify = ctypes.c_uint()
2325
gnutls.openpgp_crt_verify_self(crt, 0,
2326
ctypes.byref(crtverify))
1833
(gnutls.library.functions
1834
.gnutls_openpgp_crt_verify_self(crt, 0,
1835
ctypes.byref(crtverify)))
2327
1836
if crtverify.value != 0:
2328
gnutls.openpgp_crt_deinit(crt)
2329
raise gnutls.CertificateSecurityError("Verify failed")
1837
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1838
raise (gnutls.errors.CertificateSecurityError
1839
("Verify failed"))
2330
1840
# New buffer for the fingerprint
2331
1841
buf = ctypes.create_string_buffer(20)
2332
1842
buf_len = ctypes.c_size_t()
2333
1843
# Get the fingerprint from the certificate into the buffer
2334
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2335
ctypes.byref(buf_len))
1844
(gnutls.library.functions
1845
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1846
ctypes.byref(buf_len)))
2336
1847
# Deinit the certificate
2337
gnutls.openpgp_crt_deinit(crt)
1848
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2338
1849
# Convert the buffer to a Python bytestring
2339
1850
fpr = ctypes.string_at(buf, buf_len.value)
2340
1851
# Convert the bytestring to hexadecimal notation
2344
1855
2345
1856
class MultiprocessingMixIn(object):
2346
1857
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2347
2348
1858
def sub_process_main(self, request, address):
2349
1859
try:
2350
1860
self.finish_request(request, address)
2362
1872
2363
1873
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2364
1874
""" adds a pipe to the MixIn """
2365
2366
1875
def process_request(self, request, client_address):
2367
1876
"""Overrides and wraps the original process_request().
2368
1877
2377
1886
2378
1887
def add_pipe(self, parent_pipe, proc):
2379
1888
"""Dummy function; override as necessary"""
2380
raise NotImplementedError()
1889
raise NotImplementedError
2381
1890
2382
1891
2383
1892
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2389
1898
interface: None or a network interface name (string)
2390
1899
use_ipv6: Boolean; to use IPv6 or not
2391
1900
"""
2392
2393
1901
def __init__(self, server_address, RequestHandlerClass,
2394
interface=None,
2395
use_ipv6=True,
2396
socketfd=None):
2397
"""If socketfd is set, use that file descriptor instead of
2398
creating a new one with socket.socket().
2399
"""
1902
interface=None, use_ipv6=True):
2400
1903
self.interface = interface
2401
1904
if use_ipv6:
2402
1905
self.address_family = socket.AF_INET6
2403
if socketfd is not None:
2404
# Save the file descriptor
2405
self.socketfd = socketfd
2406
# Save the original socket.socket() function
2407
self.socket_socket = socket.socket
2408
# To implement --socket, we monkey patch socket.socket.
2409
#
2410
# (When socketserver.TCPServer is a new-style class, we
2411
# could make self.socket into a property instead of monkey
2412
# patching socket.socket.)
2413
#
2414
# Create a one-time-only replacement for socket.socket()
2415
@functools.wraps(socket.socket)
2416
def socket_wrapper(*args, **kwargs):
2417
# Restore original function so subsequent calls are
2418
# not affected.
2419
socket.socket = self.socket_socket
2420
del self.socket_socket
2421
# This time only, return a new socket object from the
2422
# saved file descriptor.
2423
return socket.fromfd(self.socketfd, *args, **kwargs)
2424
# Replace socket.socket() function with wrapper
2425
socket.socket = socket_wrapper
2426
# The socketserver.TCPServer.__init__ will call
2427
# socket.socket(), which might be our replacement,
2428
# socket_wrapper(), if socketfd was set.
2429
1906
socketserver.TCPServer.__init__(self, server_address,
2430
1907
RequestHandlerClass)
2431
2432
1908
def server_bind(self):
2433
1909
"""This overrides the normal server_bind() function
2434
1910
to bind to an interface if one was specified, and also NOT to
2440
1916
self.interface)
2441
1917
else:
2442
1918
try:
2443
self.socket.setsockopt(
2444
socket.SOL_SOCKET, SO_BINDTODEVICE,
2445
(self.interface + "\0").encode("utf-8"))
1919
self.socket.setsockopt(socket.SOL_SOCKET,
1920
SO_BINDTODEVICE,
1921
str(self.interface
1922
+ '\0'))
2446
1923
except socket.error as error:
2447
1924
if error.errno == errno.EPERM:
2448
logger.error("No permission to bind to"
2449
" interface %s", self.interface)
1925
logger.error("No permission to"
1926
" bind to interface %s",
1927
self.interface)
2450
1928
elif error.errno == errno.ENOPROTOOPT:
2451
1929
logger.error("SO_BINDTODEVICE not available;"
2452
1930
" cannot bind to interface %s",
2453
1931
self.interface)
2454
1932
elif error.errno == errno.ENODEV:
2455
logger.error("Interface %s does not exist,"
2456
" cannot bind", self.interface)
1933
logger.error("Interface %s does not"
1934
" exist, cannot bind",
1935
self.interface)
2457
1936
else:
2458
1937
raise
2459
1938
# Only bind(2) the socket if we really need to.
2462
1941
if self.address_family == socket.AF_INET6:
2463
1942
any_address = "::" # in6addr_any
2464
1943
else:
2465
any_address = "0.0.0.0" # INADDR_ANY
1944
any_address = socket.INADDR_ANY
2466
1945
self.server_address = (any_address,
2467
1946
self.server_address[1])
2468
1947
elif not self.server_address[1]:
2469
self.server_address = (self.server_address[0], 0)
1948
self.server_address = (self.server_address[0],
1949
0)
2470
1950
# if self.interface:
2471
1951
# self.server_address = (self.server_address[0],
2472
1952
# 0, # port
2484
1964
gnutls_priority GnuTLS priority string
2485
1965
use_dbus: Boolean; to emit D-Bus signals or not
2486
1966
2487
Assumes a GLib.MainLoop event loop.
1967
Assumes a gobject.MainLoop event loop.
2488
1968
"""
2489
2490
1969
def __init__(self, server_address, RequestHandlerClass,
2491
interface=None,
2492
use_ipv6=True,
2493
clients=None,
2494
gnutls_priority=None,
2495
use_dbus=True,
2496
socketfd=None):
1970
interface=None, use_ipv6=True, clients=None,
1971
gnutls_priority=None, use_dbus=True):
2497
1972
self.enabled = False
2498
1973
self.clients = clients
2499
1974
if self.clients is None:
2503
1978
IPv6_TCPServer.__init__(self, server_address,
2504
1979
RequestHandlerClass,
2505
1980
interface = interface,
2506
use_ipv6 = use_ipv6,
2507
socketfd = socketfd)
2508
1981
use_ipv6 = use_ipv6)
2509
1982
def server_activate(self):
2510
1983
if self.enabled:
2511
1984
return socketserver.TCPServer.server_activate(self)
2515
1988
2516
1989
def add_pipe(self, parent_pipe, proc):
2517
1990
# Call "handle_ipc" for both data and EOF events
2518
GLib.io_add_watch(
2519
parent_pipe.fileno(),
2520
GLib.IO_IN | GLib.IO_HUP,
2521
functools.partial(self.handle_ipc,
2522
parent_pipe = parent_pipe,
2523
proc = proc))
1991
gobject.io_add_watch(parent_pipe.fileno(),
1992
gobject.IO_IN | gobject.IO_HUP,
1993
functools.partial(self.handle_ipc,
1994
parent_pipe =
1995
parent_pipe,
1996
proc = proc))
2524
1997
2525
def handle_ipc(self, source, condition,
2526
parent_pipe=None,
2527
proc = None,
2528
client_object=None):
1998
def handle_ipc(self, source, condition, parent_pipe=None,
1999
proc = None, client_object=None):
2529
2000
# error, or the other end of multiprocessing.Pipe has closed
2530
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2001
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2531
2002
# Wait for other process to exit
2532
2003
proc.join()
2533
2004
return False
2540
2011
fpr = request[1]
2541
2012
address = request[2]
2542
2013
2543
for c in self.clients.values():
2014
for c in self.clients.itervalues():
2544
2015
if c.fingerprint == fpr:
2545
2016
client = c
2546
2017
break
2554
2025
parent_pipe.send(False)
2555
2026
return False
2556
2027
2557
GLib.io_add_watch(
2558
parent_pipe.fileno(),
2559
GLib.IO_IN | GLib.IO_HUP,
2560
functools.partial(self.handle_ipc,
2561
parent_pipe = parent_pipe,
2562
proc = proc,
2563
client_object = client))
2028
gobject.io_add_watch(parent_pipe.fileno(),
2029
gobject.IO_IN | gobject.IO_HUP,
2030
functools.partial(self.handle_ipc,
2031
parent_pipe =
2032
parent_pipe,
2033
proc = proc,
2034
client_object =
2035
client))
2564
2036
parent_pipe.send(True)
2565
2037
# remove the old hook in favor of the new above hook on
2566
2038
# same fileno
2572
2044
2573
2045
parent_pipe.send(('data', getattr(client_object,
2574
2046
funcname)(*args,
2575
**kwargs)))
2047
**kwargs)))
2576
2048
2577
2049
if command == 'getattr':
2578
2050
attrname = request[1]
2579
if isinstance(client_object.__getattribute__(attrname),
2580
collections.Callable):
2581
parent_pipe.send(('function', ))
2051
if callable(client_object.__getattribute__(attrname)):
2052
parent_pipe.send(('function',))
2582
2053
else:
2583
parent_pipe.send((
2584
'data', client_object.__getattribute__(attrname)))
2054
parent_pipe.send(('data', client_object
2055
.__getattribute__(attrname)))
2585
2056
2586
2057
if command == 'setattr':
2587
2058
attrname = request[1]
2591
2062
return True
2592
2063
2593
2064
2594
def rfc3339_duration_to_delta(duration):
2595
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2596
2597
>>> rfc3339_duration_to_delta("P7D")
2598
datetime.timedelta(7)
2599
>>> rfc3339_duration_to_delta("PT60S")
2600
datetime.timedelta(0, 60)
2601
>>> rfc3339_duration_to_delta("PT60M")
2602
datetime.timedelta(0, 3600)
2603
>>> rfc3339_duration_to_delta("PT24H")
2604
datetime.timedelta(1)
2605
>>> rfc3339_duration_to_delta("P1W")
2606
datetime.timedelta(7)
2607
>>> rfc3339_duration_to_delta("PT5M30S")
2608
datetime.timedelta(0, 330)
2609
>>> rfc3339_duration_to_delta("P1DT3M20S")
2610
datetime.timedelta(1, 200)
2611
"""
2612
2613
# Parsing an RFC 3339 duration with regular expressions is not
2614
# possible - there would have to be multiple places for the same
2615
# values, like seconds. The current code, while more esoteric, is
2616
# cleaner without depending on a parsing library. If Python had a
2617
# built-in library for parsing we would use it, but we'd like to
2618
# avoid excessive use of external libraries.
2619
2620
# New type for defining tokens, syntax, and semantics all-in-one
2621
Token = collections.namedtuple("Token", (
2622
"regexp", # To match token; if "value" is not None, must have
2623
# a "group" containing digits
2624
"value", # datetime.timedelta or None
2625
"followers")) # Tokens valid after this token
2626
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2627
# the "duration" ABNF definition in RFC 3339, Appendix A.
2628
token_end = Token(re.compile(r"$"), None, frozenset())
2629
token_second = Token(re.compile(r"(\d+)S"),
2630
datetime.timedelta(seconds=1),
2631
frozenset((token_end, )))
2632
token_minute = Token(re.compile(r"(\d+)M"),
2633
datetime.timedelta(minutes=1),
2634
frozenset((token_second, token_end)))
2635
token_hour = Token(re.compile(r"(\d+)H"),
2636
datetime.timedelta(hours=1),
2637
frozenset((token_minute, token_end)))
2638
token_time = Token(re.compile(r"T"),
2639
None,
2640
frozenset((token_hour, token_minute,
2641
token_second)))
2642
token_day = Token(re.compile(r"(\d+)D"),
2643
datetime.timedelta(days=1),
2644
frozenset((token_time, token_end)))
2645
token_month = Token(re.compile(r"(\d+)M"),
2646
datetime.timedelta(weeks=4),
2647
frozenset((token_day, token_end)))
2648
token_year = Token(re.compile(r"(\d+)Y"),
2649
datetime.timedelta(weeks=52),
2650
frozenset((token_month, token_end)))
2651
token_week = Token(re.compile(r"(\d+)W"),
2652
datetime.timedelta(weeks=1),
2653
frozenset((token_end, )))
2654
token_duration = Token(re.compile(r"P"), None,
2655
frozenset((token_year, token_month,
2656
token_day, token_time,
2657
token_week)))
2658
# Define starting values
2659
value = datetime.timedelta() # Value so far
2660
found_token = None
2661
followers = frozenset((token_duration, )) # Following valid tokens
2662
s = duration # String left to parse
2663
# Loop until end token is found
2664
while found_token is not token_end:
2665
# Search for any currently valid tokens
2666
for token in followers:
2667
match = token.regexp.match(s)
2668
if match is not None:
2669
# Token found
2670
if token.value is not None:
2671
# Value found, parse digits
2672
factor = int(match.group(1), 10)
2673
# Add to value so far
2674
value += factor * token.value
2675
# Strip token from string
2676
s = token.regexp.sub("", s, 1)
2677
# Go to found token
2678
found_token = token
2679
# Set valid next tokens
2680
followers = found_token.followers
2681
break
2682
else:
2683
# No currently valid tokens were found
2684
raise ValueError("Invalid RFC 3339 duration: {!r}"
2685
.format(duration))
2686
# End token found
2687
return value
2688
2689
2690
2065
def string_to_delta(interval):
2691
2066
"""Parse a string and return a datetime.timedelta
2692
2067
2703
2078
>>> string_to_delta('5m 30s')
2704
2079
datetime.timedelta(0, 330)
2705
2080
"""
2706
2707
try:
2708
return rfc3339_duration_to_delta(interval)
2709
except ValueError:
2710
pass
2711
2712
2081
timevalue = datetime.timedelta(0)
2713
2082
for s in interval.split():
2714
2083
try:
2715
suffix = s[-1]
2084
suffix = unicode(s[-1])
2716
2085
value = int(s[:-1])
2717
2086
if suffix == "d":
2718
2087
delta = datetime.timedelta(value)
2725
2094
elif suffix == "w":
2726
2095
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2727
2096
else:
2728
raise ValueError("Unknown suffix {!r}".format(suffix))
2729
except IndexError as e:
2097
raise ValueError("Unknown suffix {0!r}"
2098
.format(suffix))
2099
except (ValueError, IndexError) as e:
2730
2100
raise ValueError(*(e.args))
2731
2101
timevalue += delta
2732
2102
return timevalue
2748
2118
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2749
2119
if not stat.S_ISCHR(os.fstat(null).st_mode):
2750
2120
raise OSError(errno.ENODEV,
2751
"{} not a character device"
2121
"{0} not a character device"
2752
2122
.format(os.devnull))
2753
2123
os.dup2(null, sys.stdin.fileno())
2754
2124
os.dup2(null, sys.stdout.fileno())
2764
2134
2765
2135
parser = argparse.ArgumentParser()
2766
2136
parser.add_argument("-v", "--version", action="version",
2767
version = "%(prog)s {}".format(version),
2137
version = "%(prog)s {0}".format(version),
2768
2138
help="show version number and exit")
2769
2139
parser.add_argument("-i", "--interface", metavar="IF",
2770
2140
help="Bind to interface IF")
2776
2146
help="Run self-test")
2777
2147
parser.add_argument("--debug", action="store_true",
2778
2148
help="Debug mode; run in foreground and log"
2779
" to terminal", default=None)
2149
" to terminal")
2780
2150
parser.add_argument("--debuglevel", metavar="LEVEL",
2781
2151
help="Debug level for stdout output")
2782
2152
parser.add_argument("--priority", help="GnuTLS"
2789
2159
" files")
2790
2160
parser.add_argument("--no-dbus", action="store_false",
2791
2161
dest="use_dbus", help="Do not provide D-Bus"
2792
" system bus interface", default=None)
2162
" system bus interface")
2793
2163
parser.add_argument("--no-ipv6", action="store_false",
2794
dest="use_ipv6", help="Do not use IPv6",
2795
default=None)
2164
dest="use_ipv6", help="Do not use IPv6")
2796
2165
parser.add_argument("--no-restore", action="store_false",
2797
2166
dest="restore", help="Do not restore stored"
2798
" state", default=None)
2799
parser.add_argument("--socket", type=int,
2800
help="Specify a file descriptor to a network"
2801
" socket to use instead of creating one")
2167
" state")
2802
2168
parser.add_argument("--statedir", metavar="DIR",
2803
2169
help="Directory to save/restore state in")
2804
parser.add_argument("--foreground", action="store_true",
2805
help="Run in foreground", default=None)
2806
parser.add_argument("--no-zeroconf", action="store_false",
2807
dest="zeroconf", help="Do not use Zeroconf",
2808
default=None)
2809
2170
2810
2171
options = parser.parse_args()
2811
2172
2812
2173
if options.check:
2813
2174
import doctest
2814
fail_count, test_count = doctest.testmod()
2815
sys.exit(os.EX_OK if fail_count == 0 else 1)
2175
doctest.testmod()
2176
sys.exit()
2816
2177
2817
2178
# Default values for config file for server-global settings
2818
2179
server_defaults = { "interface": "",
2820
2181
"port": "",
2821
2182
"debug": "False",
2822
2183
"priority":
2823
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2824
":+SIGN-DSA-SHA256",
2184
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2825
2185
"servicename": "Mandos",
2826
2186
"use_dbus": "True",
2827
2187
"use_ipv6": "True",
2828
2188
"debuglevel": "",
2829
2189
"restore": "True",
2830
"socket": "",
2831
"statedir": "/var/lib/mandos",
2832
"foreground": "False",
2833
"zeroconf": "True",
2834
}
2190
"statedir": "/var/lib/mandos"
2191
}
2835
2192
2836
2193
# Parse config file for server-global settings
2837
2194
server_config = configparser.SafeConfigParser(server_defaults)
2838
2195
del server_defaults
2839
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2196
server_config.read(os.path.join(options.configdir,
2197
"mandos.conf"))
2840
2198
# Convert the SafeConfigParser object to a dict
2841
2199
server_settings = server_config.defaults()
2842
2200
# Use the appropriate methods on the non-string config options
2843
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2201
for option in ("debug", "use_dbus", "use_ipv6"):
2844
2202
server_settings[option] = server_config.getboolean("DEFAULT",
2845
2203
option)
2846
2204
if server_settings["port"]:
2847
2205
server_settings["port"] = server_config.getint("DEFAULT",
2848
2206
"port")
2849
if server_settings["socket"]:
2850
server_settings["socket"] = server_config.getint("DEFAULT",
2851
"socket")
2852
# Later, stdin will, and stdout and stderr might, be dup'ed
2853
# over with an opened os.devnull. But we don't want this to
2854
# happen with a supplied network socket.
2855
if 0 <= server_settings["socket"] <= 2:
2856
server_settings["socket"] = os.dup(server_settings
2857
["socket"])
2858
2207
del server_config
2859
2208
2860
2209
# Override the settings from the config file with command line
2861
2210
# options, if set.
2862
2211
for option in ("interface", "address", "port", "debug",
2863
"priority", "servicename", "configdir", "use_dbus",
2864
"use_ipv6", "debuglevel", "restore", "statedir",
2865
"socket", "foreground", "zeroconf"):
2212
"priority", "servicename", "configdir",
2213
"use_dbus", "use_ipv6", "debuglevel", "restore",
2214
"statedir"):
2866
2215
value = getattr(options, option)
2867
2216
if value is not None:
2868
2217
server_settings[option] = value
2869
2218
del options
2870
2219
# Force all strings to be unicode
2871
2220
for option in server_settings.keys():
2872
if isinstance(server_settings[option], bytes):
2873
server_settings[option] = (server_settings[option]
2874
.decode("utf-8"))
2875
# Force all boolean options to be boolean
2876
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2877
"foreground", "zeroconf"):
2878
server_settings[option] = bool(server_settings[option])
2879
# Debug implies foreground
2880
if server_settings["debug"]:
2881
server_settings["foreground"] = True
2221
if type(server_settings[option]) is str:
2222
server_settings[option] = unicode(server_settings[option])
2882
2223
# Now we have our good server settings in "server_settings"
2883
2224
2884
2225
##################################################################
2885
2226
2886
if (not server_settings["zeroconf"]
2887
and not (server_settings["port"]
2888
or server_settings["socket"] != "")):
2889
parser.error("Needs port or socket to work without Zeroconf")
2890
2891
2227
# For convenience
2892
2228
debug = server_settings["debug"]
2893
2229
debuglevel = server_settings["debuglevel"]
2895
2231
use_ipv6 = server_settings["use_ipv6"]
2896
2232
stored_state_path = os.path.join(server_settings["statedir"],
2897
2233
stored_state_file)
2898
foreground = server_settings["foreground"]
2899
zeroconf = server_settings["zeroconf"]
2900
2234
2901
2235
if debug:
2902
2236
initlogger(debug, logging.DEBUG)
2908
2242
initlogger(debug, level)
2909
2243
2910
2244
if server_settings["servicename"] != "Mandos":
2911
syslogger.setFormatter(
2912
logging.Formatter('Mandos ({}) [%(process)d]:'
2913
' %(levelname)s: %(message)s'.format(
2914
server_settings["servicename"])))
2245
syslogger.setFormatter(logging.Formatter
2246
('Mandos ({0}) [%(process)d]:'
2247
' %(levelname)s: %(message)s'
2248
.format(server_settings
2249
["servicename"])))
2915
2250
2916
2251
# Parse config file with clients
2917
2252
client_config = configparser.SafeConfigParser(Client
2922
2257
global mandos_dbus_service
2923
2258
mandos_dbus_service = None
2924
2259
2925
socketfd = None
2926
if server_settings["socket"] != "":
2927
socketfd = server_settings["socket"]
2928
tcp_server = MandosServer(
2929
(server_settings["address"], server_settings["port"]),
2930
ClientHandler,
2931
interface=(server_settings["interface"] or None),
2932
use_ipv6=use_ipv6,
2933
gnutls_priority=server_settings["priority"],
2934
use_dbus=use_dbus,
2935
socketfd=socketfd)
2936
if not foreground:
2937
pidfilename = "/run/mandos.pid"
2938
if not os.path.isdir("/run/."):
2939
pidfilename = "/var/run/mandos.pid"
2940
pidfile = None
2260
tcp_server = MandosServer((server_settings["address"],
2261
server_settings["port"]),
2262
ClientHandler,
2263
interface=(server_settings["interface"]
2264
or None),
2265
use_ipv6=use_ipv6,
2266
gnutls_priority=
2267
server_settings["priority"],
2268
use_dbus=use_dbus)
2269
if not debug:
2270
pidfilename = "/var/run/mandos.pid"
2941
2271
try:
2942
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2272
pidfile = open(pidfilename, "w")
2943
2273
except IOError as e:
2944
2274
logger.error("Could not open file %r", pidfilename,
2945
2275
exc_info=e)
2946
2276
2947
for name, group in (("_mandos", "_mandos"),
2948
("mandos", "mandos"),
2949
("nobody", "nogroup")):
2277
for name in ("_mandos", "mandos", "nobody"):
2950
2278
try:
2951
2279
uid = pwd.getpwnam(name).pw_uid
2952
gid = pwd.getpwnam(group).pw_gid
2280
gid = pwd.getpwnam(name).pw_gid
2953
2281
break
2954
2282
except KeyError:
2955
2283
continue
2959
2287
try:
2960
2288
os.setgid(gid)
2961
2289
os.setuid(uid)
2962
if debug:
2963
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2964
gid))
2965
2290
except OSError as error:
2966
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2967
.format(uid, gid, os.strerror(error.errno)))
2968
2291
if error.errno != errno.EPERM:
2969
raise
2292
raise error
2970
2293
2971
2294
if debug:
2972
2295
# Enable all possible GnuTLS debugging
2973
2296
2974
2297
# "Use a log level over 10 to enable all debugging options."
2975
2298
# - GnuTLS manual
2976
gnutls.global_set_log_level(11)
2299
gnutls.library.functions.gnutls_global_set_log_level(11)
2977
2300
2978
@gnutls.log_func
2301
@gnutls.library.types.gnutls_log_func
2979
2302
def debug_gnutls(level, string):
2980
2303
logger.debug("GnuTLS: %s", string[:-1])
2981
2304
2982
gnutls.global_set_log_function(debug_gnutls)
2305
(gnutls.library.functions
2306
.gnutls_global_set_log_function(debug_gnutls))
2983
2307
2984
2308
# Redirect stdin so all checkers get /dev/null
2985
2309
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2988
2312
os.close(null)
2989
2313
2990
2314
# Need to fork before connecting to D-Bus
2991
if not foreground:
2315
if not debug:
2992
2316
# Close all input and output, do double fork, etc.
2993
2317
daemon()
2994
2318
2995
# multiprocessing will use threads, so before we use GLib we need
2996
# to inform GLib that threads will be used.
2997
GLib.threads_init()
2319
gobject.threads_init()
2998
2320
2999
2321
global main_loop
3000
2322
# From the Avahi example code
3001
2323
DBusGMainLoop(set_as_default=True)
3002
main_loop = GLib.MainLoop()
2324
main_loop = gobject.MainLoop()
3003
2325
bus = dbus.SystemBus()
3004
2326
# End of Avahi example code
3005
2327
if use_dbus:
3006
2328
try:
3007
2329
bus_name = dbus.service.BusName("se.recompile.Mandos",
3008
bus,
3009
do_not_queue=True)
3010
old_bus_name = dbus.service.BusName(
3011
"se.bsnet.fukt.Mandos", bus,
3012
do_not_queue=True)
3013
except dbus.exceptions.DBusException as e:
2330
bus, do_not_queue=True)
2331
old_bus_name = (dbus.service.BusName
2332
("se.bsnet.fukt.Mandos", bus,
2333
do_not_queue=True))
2334
except dbus.exceptions.NameExistsException as e:
3014
2335
logger.error("Disabling D-Bus:", exc_info=e)
3015
2336
use_dbus = False
3016
2337
server_settings["use_dbus"] = False
3017
2338
tcp_server.use_dbus = False
3018
if zeroconf:
3019
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3020
service = AvahiServiceToSyslog(
3021
name = server_settings["servicename"],
3022
servicetype = "_mandos._tcp",
3023
protocol = protocol,
3024
bus = bus)
3025
if server_settings["interface"]:
3026
service.interface = if_nametoindex(
3027
server_settings["interface"].encode("utf-8"))
2339
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2340
service = AvahiServiceToSyslog(name =
2341
server_settings["servicename"],
2342
servicetype = "_mandos._tcp",
2343
protocol = protocol, bus = bus)
2344
if server_settings["interface"]:
2345
service.interface = (if_nametoindex
2346
(str(server_settings["interface"])))
3028
2347
3029
2348
global multiprocessing_manager
3030
2349
multiprocessing_manager = multiprocessing.Manager()
3037
2356
old_client_settings = {}
3038
2357
clients_data = {}
3039
2358
3040
# This is used to redirect stdout and stderr for checker processes
3041
global wnull
3042
wnull = open(os.devnull, "w") # A writable /dev/null
3043
# Only used if server is running in foreground but not in debug
3044
# mode
3045
if debug or not foreground:
3046
wnull.close()
3047
3048
2359
# Get client data and settings from last running state.
3049
2360
if server_settings["restore"]:
3050
2361
try:
3051
2362
with open(stored_state_path, "rb") as stored_state:
3052
if sys.version_info.major == 2:
3053
clients_data, old_client_settings = pickle.load(
3054
stored_state)
3055
else:
3056
bytes_clients_data, bytes_old_client_settings = (
3057
pickle.load(stored_state, encoding = "bytes"))
3058
### Fix bytes to strings
3059
## clients_data
3060
# .keys()
3061
clients_data = { (key.decode("utf-8")
3062
if isinstance(key, bytes)
3063
else key): value
3064
for key, value in
3065
bytes_clients_data.items() }
3066
del bytes_clients_data
3067
for key in clients_data:
3068
value = { (k.decode("utf-8")
3069
if isinstance(k, bytes) else k): v
3070
for k, v in
3071
clients_data[key].items() }
3072
clients_data[key] = value
3073
# .client_structure
3074
value["client_structure"] = [
3075
(s.decode("utf-8")
3076
if isinstance(s, bytes)
3077
else s) for s in
3078
value["client_structure"] ]
3079
# .name & .host
3080
for k in ("name", "host"):
3081
if isinstance(value[k], bytes):
3082
value[k] = value[k].decode("utf-8")
3083
## old_client_settings
3084
# .keys()
3085
old_client_settings = {
3086
(key.decode("utf-8")
3087
if isinstance(key, bytes)
3088
else key): value
3089
for key, value in
3090
bytes_old_client_settings.items() }
3091
del bytes_old_client_settings
3092
# .host
3093
for value in old_client_settings.values():
3094
if isinstance(value["host"], bytes):
3095
value["host"] = (value["host"]
3096
.decode("utf-8"))
2363
clients_data, old_client_settings = (pickle.load
2364
(stored_state))
3097
2365
os.remove(stored_state_path)
3098
2366
except IOError as e:
3099
2367
if e.errno == errno.ENOENT:
3100
logger.warning("Could not load persistent state:"
3101
" {}".format(os.strerror(e.errno)))
2368
logger.warning("Could not load persistent state: {0}"
2369
.format(os.strerror(e.errno)))
3102
2370
else:
3103
2371
logger.critical("Could not load persistent state:",
3104
2372
exc_info=e)
3105
2373
raise
3106
2374
except EOFError as e:
3107
2375
logger.warning("Could not load persistent state: "
3108
"EOFError:",
3109
exc_info=e)
2376
"EOFError:", exc_info=e)
3110
2377
3111
2378
with PGPEngine() as pgp:
3112
for client_name, client in clients_data.items():
3113
# Skip removed clients
3114
if client_name not in client_settings:
3115
continue
3116
2379
for client_name, client in clients_data.iteritems():
3117
2380
# Decide which value to use after restoring saved state.
3118
2381
# We have three different values: Old config file,
3119
2382
# new config file, and saved state.
3124
2387
# For each value in new config, check if it
3125
2388
# differs from the old config value (Except for
3126
2389
# the "secret" attribute)
3127
if (name != "secret"
3128
and (value !=
3129
old_client_settings[client_name][name])):
2390
if (name != "secret" and
2391
value != old_client_settings[client_name]
2392
[name]):
3130
2393
client[name] = value
3131
2394
except KeyError:
3132
2395
pass
3133
2396
3134
2397
# Clients who has passed its expire date can still be
3135
# enabled if its last checker was successful. A Client
2398
# enabled if its last checker was successful. Clients
3136
2399
# whose checker succeeded before we stored its state is
3137
2400
# assumed to have successfully run all checkers during
3138
2401
# downtime.
3140
2403
if datetime.datetime.utcnow() >= client["expires"]:
3141
2404
if not client["last_checked_ok"]:
3142
2405
logger.warning(
3143
"disabling client {} - Client never "
3144
"performed a successful checker".format(
3145
client_name))
2406
"disabling client {0} - Client never "
2407
"performed a successful checker"
2408
.format(client_name))
3146
2409
client["enabled"] = False
3147
2410
elif client["last_checker_status"] != 0:
3148
2411
logger.warning(
3149
"disabling client {} - Client last"
3150
" checker failed with error code"
3151
" {}".format(
3152
client_name,
3153
client["last_checker_status"]))
2412
"disabling client {0} - Client "
2413
"last checker failed with error code {1}"
2414
.format(client_name,
2415
client["last_checker_status"]))
3154
2416
client["enabled"] = False
3155
2417
else:
3156
client["expires"] = (
3157
datetime.datetime.utcnow()
3158
+ client["timeout"])
2418
client["expires"] = (datetime.datetime
2419
.utcnow()
2420
+ client["timeout"])
3159
2421
logger.debug("Last checker succeeded,"
3160
" keeping {} enabled".format(
3161
client_name))
2422
" keeping {0} enabled"
2423
.format(client_name))
3162
2424
try:
3163
client["secret"] = pgp.decrypt(
3164
client["encrypted_secret"],
3165
client_settings[client_name]["secret"])
2425
client["secret"] = (
2426
pgp.decrypt(client["encrypted_secret"],
2427
client_settings[client_name]
2428
["secret"]))
3166
2429
except PGPError:
3167
2430
# If decryption fails, we use secret from new settings
3168
logger.debug("Failed to decrypt {} old secret".format(
3169
client_name))
3170
client["secret"] = (client_settings[client_name]
3171
["secret"])
2431
logger.debug("Failed to decrypt {0} old secret"
2432
.format(client_name))
2433
client["secret"] = (
2434
client_settings[client_name]["secret"])
3172
2435
3173
2436
# Add/remove clients based on new changes made to config
3174
2437
for client_name in (set(old_client_settings)
3179
2442
clients_data[client_name] = client_settings[client_name]
3180
2443
3181
2444
# Create all client objects
3182
for client_name, client in clients_data.items():
2445
for client_name, client in clients_data.iteritems():
3183
2446
tcp_server.clients[client_name] = client_class(
3184
name = client_name,
3185
settings = client,
3186
server_settings = server_settings)
2447
name = client_name, settings = client)
3187
2448
3188
2449
if not tcp_server.clients:
3189
2450
logger.warning("No clients defined")
3190
2451
3191
if not foreground:
3192
if pidfile is not None:
3193
pid = os.getpid()
3194
try:
3195
with pidfile:
3196
print(pid, file=pidfile)
3197
except IOError:
3198
logger.error("Could not write to file %r with PID %d",
3199
pidfilename, pid)
3200
del pidfile
2452
if not debug:
2453
try:
2454
with pidfile:
2455
pid = os.getpid()
2456
pidfile.write(str(pid) + "\n".encode("utf-8"))
2457
del pidfile
2458
except IOError:
2459
logger.error("Could not write to file %r with PID %d",
2460
pidfilename, pid)
2461
except NameError:
2462
# "pidfile" was never created
2463
pass
3201
2464
del pidfilename
3202
2465
3203
for termsig in (signal.SIGHUP, signal.SIGTERM):
3204
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3205
lambda: main_loop.quit() and False)
2466
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2467
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3206
2468
3207
2469
if use_dbus:
3208
3209
@alternate_dbus_interfaces(
3210
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3211
class MandosDBusService(DBusObjectWithObjectManager):
2470
@alternate_dbus_interfaces({"se.recompile.Mandos":
2471
"se.bsnet.fukt.Mandos"})
2472
class MandosDBusService(DBusObjectWithProperties):
3212
2473
"""A D-Bus proxy object"""
3213
3214
2474
def __init__(self):
3215
2475
dbus.service.Object.__init__(self, bus, "/")
3216
3217
2476
_interface = "se.recompile.Mandos"
3218
2477
2478
@dbus_interface_annotations(_interface)
2479
def _foo(self):
2480
return { "org.freedesktop.DBus.Property"
2481
".EmitsChangedSignal":
2482
"false"}
2483
3219
2484
@dbus.service.signal(_interface, signature="o")
3220
2485
def ClientAdded(self, objpath):
3221
2486
"D-Bus signal"
3226
2491
"D-Bus signal"
3227
2492
pass
3228
2493
3229
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3230
"true"})
3231
2494
@dbus.service.signal(_interface, signature="os")
3232
2495
def ClientRemoved(self, objpath, name):
3233
2496
"D-Bus signal"
3234
2497
pass
3235
2498
3236
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3237
"true"})
3238
2499
@dbus.service.method(_interface, out_signature="ao")
3239
2500
def GetAllClients(self):
3240
2501
"D-Bus method"
3241
return dbus.Array(c.dbus_object_path for c in
3242
tcp_server.clients.values())
2502
return dbus.Array(c.dbus_object_path
2503
for c in
2504
tcp_server.clients.itervalues())
3243
2505
3244
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3245
"true"})
3246
2506
@dbus.service.method(_interface,
3247
2507
out_signature="a{oa{sv}}")
3248
2508
def GetAllClientsWithProperties(self):
3249
2509
"D-Bus method"
3250
2510
return dbus.Dictionary(
3251
{ c.dbus_object_path: c.GetAll(
3252
"se.recompile.Mandos.Client")
3253
for c in tcp_server.clients.values() },
2511
((c.dbus_object_path, c.GetAll(""))
2512
for c in tcp_server.clients.itervalues()),
3254
2513
signature="oa{sv}")
3255
2514
3256
2515
@dbus.service.method(_interface, in_signature="o")
3257
2516
def RemoveClient(self, object_path):
3258
2517
"D-Bus method"
3259
for c in tcp_server.clients.values():
2518
for c in tcp_server.clients.itervalues():
3260
2519
if c.dbus_object_path == object_path:
3261
2520
del tcp_server.clients[c.name]
3262
2521
c.remove_from_connection()
3263
# Don't signal the disabling
2522
# Don't signal anything except ClientRemoved
3264
2523
c.disable(quiet=True)
3265
# Emit D-Bus signal for removal
3266
self.client_removed_signal(c)
2524
# Emit D-Bus signal
2525
self.ClientRemoved(object_path, c.name)
3267
2526
return
3268
2527
raise KeyError(object_path)
3269
2528
3270
2529
del _interface
3271
3272
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3273
out_signature = "a{oa{sa{sv}}}")
3274
def GetManagedObjects(self):
3275
"""D-Bus method"""
3276
return dbus.Dictionary(
3277
{ client.dbus_object_path:
3278
dbus.Dictionary(
3279
{ interface: client.GetAll(interface)
3280
for interface in
3281
client._get_all_interface_names()})
3282
for client in tcp_server.clients.values()})
3283
3284
def client_added_signal(self, client):
3285
"""Send the new standard signal and the old signal"""
3286
if use_dbus:
3287
# New standard signal
3288
self.InterfacesAdded(
3289
client.dbus_object_path,
3290
dbus.Dictionary(
3291
{ interface: client.GetAll(interface)
3292
for interface in
3293
client._get_all_interface_names()}))
3294
# Old signal
3295
self.ClientAdded(client.dbus_object_path)
3296
3297
def client_removed_signal(self, client):
3298
"""Send the new standard signal and the old signal"""
3299
if use_dbus:
3300
# New standard signal
3301
self.InterfacesRemoved(
3302
client.dbus_object_path,
3303
client._get_all_interface_names())
3304
# Old signal
3305
self.ClientRemoved(client.dbus_object_path,
3306
client.name)
3307
2530
3308
2531
mandos_dbus_service = MandosDBusService()
3309
2532
3310
2533
def cleanup():
3311
2534
"Cleanup function; run on exit"
3312
if zeroconf:
3313
service.cleanup()
2535
service.cleanup()
3314
2536
3315
2537
multiprocessing.active_children()
3316
wnull.close()
3317
2538
if not (tcp_server.clients or client_settings):
3318
2539
return
3319
2540
3322
2543
# removed/edited, old secret will thus be unrecovable.
3323
2544
clients = {}
3324
2545
with PGPEngine() as pgp:
3325
for client in tcp_server.clients.values():
2546
for client in tcp_server.clients.itervalues():
3326
2547
key = client_settings[client.name]["secret"]
3327
2548
client.encrypted_secret = pgp.encrypt(client.secret,
3328
2549
key)
3330
2551
3331
2552
# A list of attributes that can not be pickled
3332
2553
# + secret.
3333
exclude = { "bus", "changedstate", "secret",
3334
"checker", "server_settings" }
3335
for name, typ in inspect.getmembers(dbus.service
3336
.Object):
2554
exclude = set(("bus", "changedstate", "secret",
2555
"checker"))
2556
for name, typ in (inspect.getmembers
2557
(dbus.service.Object)):
3337
2558
exclude.add(name)
3338
2559
3339
2560
client_dict["encrypted_secret"] = (client
3346
2567
del client_settings[client.name]["secret"]
3347
2568
3348
2569
try:
3349
with tempfile.NamedTemporaryFile(
3350
mode='wb',
3351
suffix=".pickle",
3352
prefix='clients-',
3353
dir=os.path.dirname(stored_state_path),
3354
delete=False) as stored_state:
3355
pickle.dump((clients, client_settings), stored_state,
3356
protocol = 2)
3357
tempname = stored_state.name
2570
with (tempfile.NamedTemporaryFile
2571
(mode='wb', suffix=".pickle", prefix='clients-',
2572
dir=os.path.dirname(stored_state_path),
2573
delete=False)) as stored_state:
2574
pickle.dump((clients, client_settings), stored_state)
2575
tempname=stored_state.name
3358
2576
os.rename(tempname, stored_state_path)
3359
2577
except (IOError, OSError) as e:
3360
2578
if not debug:
3363
2581
except NameError:
3364
2582
pass
3365
2583
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3366
logger.warning("Could not save persistent state: {}"
2584
logger.warning("Could not save persistent state: {0}"
3367
2585
.format(os.strerror(e.errno)))
3368
2586
else:
3369
2587
logger.warning("Could not save persistent state:",
3370
2588
exc_info=e)
3371
raise
2589
raise e
3372
2590
3373
2591
# Delete all clients, and settings from config
3374
2592
while tcp_server.clients:
3375
2593
name, client = tcp_server.clients.popitem()
3376
2594
if use_dbus:
3377
2595
client.remove_from_connection()
3378
# Don't signal the disabling
2596
# Don't signal anything except ClientRemoved
3379
2597
client.disable(quiet=True)
3380
# Emit D-Bus signal for removal
3381
2598
if use_dbus:
3382
mandos_dbus_service.client_removed_signal(client)
2599
# Emit D-Bus signal
2600
mandos_dbus_service.ClientRemoved(client
2601
.dbus_object_path,
2602
client.name)
3383
2603
client_settings.clear()
3384
2604
3385
2605
atexit.register(cleanup)
3386
2606
3387
for client in tcp_server.clients.values():
2607
for client in tcp_server.clients.itervalues():
3388
2608
if use_dbus:
3389
# Emit D-Bus signal for adding
3390
mandos_dbus_service.client_added_signal(client)
2609
# Emit D-Bus signal
2610
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3391
2611
# Need to initiate checking of clients
3392
2612
if client.enabled:
3393
2613
client.init_checker()
3396
2616
tcp_server.server_activate()
3397
2617
3398
2618
# Find out what port we got
3399
if zeroconf:
3400
service.port = tcp_server.socket.getsockname()[1]
2619
service.port = tcp_server.socket.getsockname()[1]
3401
2620
if use_ipv6:
3402
2621
logger.info("Now listening on address %r, port %d,"
3403
2622
" flowinfo %d, scope_id %d",
3409
2628
#service.interface = tcp_server.socket.getsockname()[3]
3410
2629
3411
2630
try:
3412
if zeroconf:
3413
# From the Avahi example code
3414
try:
3415
service.activate()
3416
except dbus.exceptions.DBusException as error:
3417
logger.critical("D-Bus Exception", exc_info=error)
3418
cleanup()
3419
sys.exit(1)
3420
# End of Avahi example code
2631
# From the Avahi example code
2632
try:
2633
service.activate()
2634
except dbus.exceptions.DBusException as error:
2635
logger.critical("D-Bus Exception", exc_info=error)
2636
cleanup()
2637
sys.exit(1)
2638
# End of Avahi example code
3421
2639
3422
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3423
lambda *args, **kwargs:
3424
(tcp_server.handle_request
3425
(*args[2:], **kwargs) or True))
2640
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2641
lambda *args, **kwargs:
2642
(tcp_server.handle_request
2643
(*args[2:], **kwargs) or True))
3426
2644
3427
2645
logger.debug("Starting main loop")
3428
2646
main_loop.run()
3438
2656
# Must run before the D-Bus bus name gets deregistered
3439
2657
cleanup()
3440
2658
3441
3442
2659
if __name__ == '__main__':
3443
2660
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0