2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
2
# -*- mode: python; coding: utf-8 -*-
4
4
# Mandos server - give out binary blobs to connecting clients.
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
13
13
# Everything else is
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
17
# This file is part of Mandos.
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
32
31
# Contact the authors at <mandos@recompile.se>.
35
34
from __future__ import (division, absolute_import, print_function,
39
from future_builtins import *
37
from future_builtins import *
44
import SocketServer as socketserver
39
import SocketServer as socketserver
52
import ConfigParser as configparser
45
import gnutls.connection
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
70
import cPickle as pickle
65
import cPickle as pickle
73
66
import multiprocessing
83
74
import dbus.service
85
from gi.repository import GLib
86
77
from dbus.mainloop.glib import DBusGMainLoop
89
80
import xml.dom.minidom
92
if sys.version_info.major == 2:
95
# Show warnings by default
96
if not sys.warnoptions:
98
warnings.simplefilter("default")
100
# Try to find the value of SO_BINDTODEVICE:
102
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
103
# newer, and it is also the most natural place for it:
104
85
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
105
86
except AttributeError:
107
# This is where SO_BINDTODEVICE was up to and including Python
109
88
from IN import SO_BINDTODEVICE
110
89
except ImportError:
111
# In Python 2.7 it seems to have been removed entirely.
112
# Try running the C preprocessor:
114
cc = subprocess.Popen(["cc", "--language=c", "-E",
116
stdin=subprocess.PIPE,
117
stdout=subprocess.PIPE)
118
stdout = cc.communicate(
119
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
120
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
121
except (OSError, ValueError, IndexError):
123
SO_BINDTODEVICE = None
125
if sys.version_info.major == 2:
128
if sys.version_info < (3, 2):
129
configparser.Configparser = configparser.SafeConfigParser
90
SO_BINDTODEVICE = None
132
93
stored_state_file = "clients.pickle"
134
95
logger = logging.getLogger()
135
logging.captureWarnings(True) # Show warnings via the logging system
96
syslogger = (logging.handlers.SysLogHandler
97
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
98
address = str("/dev/log")))
139
if_nametoindex = ctypes.cdll.LoadLibrary(
140
ctypes.util.find_library("c")).if_nametoindex
101
if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
141
104
except (OSError, AttributeError):
143
105
def if_nametoindex(interface):
144
106
"Get an interface index the hard way, i.e. using fcntl()"
145
107
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
146
108
with contextlib.closing(socket.socket()) as s:
147
109
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
148
struct.pack(b"16s16x", interface))
149
interface_index = struct.unpack("I", ifreq[16:20])[0]
110
struct.pack(str("16s16x"),
112
interface_index = struct.unpack(str("I"),
150
114
return interface_index
153
def copy_function(func):
154
"""Make a copy of a function"""
155
if sys.version_info.major == 2:
156
return types.FunctionType(func.func_code,
162
return types.FunctionType(func.__code__,
169
117
def initlogger(debug, level=logging.WARNING):
170
118
"""init logger and add loglevel"""
173
syslogger = (logging.handlers.SysLogHandler(
174
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
176
120
syslogger.setFormatter(logging.Formatter
177
121
('Mandos [%(process)d]: %(levelname)s:'
179
123
logger.addHandler(syslogger)
182
126
console = logging.StreamHandler()
183
127
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
240
172
os.rmdir(self.tempdir)
241
173
self.tempdir = None
243
175
def password_encode(self, password):
244
176
# Passphrase can not be empty and can not contain newlines or
245
177
# NUL bytes. So we prefix it and hex encode it.
246
encoded = b"mandos" + binascii.hexlify(password)
247
if len(encoded) > 2048:
248
# GnuPG can't handle long passwords, so encode differently
249
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
250
.replace(b"\n", b"\\n")
251
.replace(b"\0", b"\\x00"))
178
return b"mandos" + binascii.hexlify(password)
254
180
def encrypt(self, data, password):
255
passphrase = self.password_encode(password)
256
with tempfile.NamedTemporaryFile(
257
dir=self.tempdir) as passfile:
258
passfile.write(passphrase)
260
proc = subprocess.Popen([self.gpg, '--symmetric',
264
stdin=subprocess.PIPE,
265
stdout=subprocess.PIPE,
266
stderr=subprocess.PIPE)
267
ciphertext, err = proc.communicate(input=data)
268
if proc.returncode != 0:
181
self.gnupg.passphrase = self.password_encode(password)
182
with open(os.devnull, "w") as devnull:
184
proc = self.gnupg.run(['--symmetric'],
185
create_fhs=['stdin', 'stdout'],
186
attach_fhs={'stderr': devnull})
187
with contextlib.closing(proc.handles['stdin']) as f:
189
with contextlib.closing(proc.handles['stdout']) as f:
190
ciphertext = f.read()
194
self.gnupg.passphrase = None
270
195
return ciphertext
272
197
def decrypt(self, data, password):
273
passphrase = self.password_encode(password)
274
with tempfile.NamedTemporaryFile(
275
dir=self.tempdir) as passfile:
276
passfile.write(passphrase)
278
proc = subprocess.Popen([self.gpg, '--decrypt',
282
stdin=subprocess.PIPE,
283
stdout=subprocess.PIPE,
284
stderr=subprocess.PIPE)
285
decrypted_plaintext, err = proc.communicate(input=data)
286
if proc.returncode != 0:
198
self.gnupg.passphrase = self.password_encode(password)
199
with open(os.devnull, "w") as devnull:
201
proc = self.gnupg.run(['--decrypt'],
202
create_fhs=['stdin', 'stdout'],
203
attach_fhs={'stderr': devnull})
204
with contextlib.closing(proc.handles['stdin']) as f:
206
with contextlib.closing(proc.handles['stdout']) as f:
207
decrypted_plaintext = f.read()
211
self.gnupg.passphrase = None
288
212
return decrypted_plaintext
291
# Pretend that we have an Avahi module
293
"""This isn't so much a class as it is a module-like namespace."""
294
IF_UNSPEC = -1 # avahi-common/address.h
295
PROTO_UNSPEC = -1 # avahi-common/address.h
296
PROTO_INET = 0 # avahi-common/address.h
297
PROTO_INET6 = 1 # avahi-common/address.h
298
DBUS_NAME = "org.freedesktop.Avahi"
299
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
300
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
301
DBUS_PATH_SERVER = "/"
304
def string_array_to_txt_array(t):
305
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
306
for s in t), signature="ay")
307
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
308
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
309
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
310
SERVER_INVALID = 0 # avahi-common/defs.h
311
SERVER_REGISTERING = 1 # avahi-common/defs.h
312
SERVER_RUNNING = 2 # avahi-common/defs.h
313
SERVER_COLLISION = 3 # avahi-common/defs.h
314
SERVER_FAILURE = 4 # avahi-common/defs.h
317
215
class AvahiError(Exception):
318
216
def __init__(self, value, *args, **kwargs):
319
217
self.value = value
320
return super(AvahiError, self).__init__(value, *args,
218
super(AvahiError, self).__init__(value, *args, **kwargs)
219
def __unicode__(self):
220
return unicode(repr(self.value))
324
222
class AvahiServiceError(AvahiError):
328
225
class AvahiGroupError(AvahiError):
229
class AvahiService(object):
333
230
"""An Avahi (Zeroconf) service.
336
233
interface: integer; avahi.IF_UNSPEC or an interface index.
337
234
Used to optionally bind to the specified interface.
338
235
name: string; Example: 'Mandos'
339
236
type: string; Example: '_mandos._tcp'.
340
See <https://www.iana.org/assignments/service-names-port-numbers>
237
See <http://www.dns-sd.org/ServiceTypes.html>
341
238
port: integer; what port to announce
342
239
TXT: list of strings; TXT record for the service
343
240
domain: string; Domain to publish on, default to .local if empty.
502
377
follow_name_owner_changes=True),
503
378
avahi.DBUS_INTERFACE_SERVER)
504
379
self.server.connect_to_signal("StateChanged",
505
self.server_state_changed)
380
self.server_state_changed)
506
381
self.server_state_changed(self.server.GetState())
509
384
class AvahiServiceToSyslog(AvahiService):
510
def rename(self, *args, **kwargs):
511
386
"""Add the new name to the syslog messages"""
512
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
513
syslogger.setFormatter(logging.Formatter(
514
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
387
ret = AvahiService.rename(self)
388
syslogger.setFormatter(logging.Formatter
389
('Mandos ({0}) [%(process)d]:'
390
' %(levelname)s: %(message)s'
519
# Pretend that we have a GnuTLS module
521
"""This isn't so much a class as it is a module-like namespace."""
523
library = ctypes.util.find_library("gnutls")
525
library = ctypes.util.find_library("gnutls-deb0")
526
_library = ctypes.cdll.LoadLibrary(library)
529
# Unless otherwise indicated, the constants and types below are
530
# all from the gnutls/gnutls.h C header file.
541
E_NO_CERTIFICATE_FOUND = -49
546
KEYID_USE_SHA256 = 1 # gnutls/x509.h
547
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
550
class session_int(ctypes.Structure):
552
session_t = ctypes.POINTER(session_int)
554
class certificate_credentials_st(ctypes.Structure):
556
certificate_credentials_t = ctypes.POINTER(
557
certificate_credentials_st)
558
certificate_type_t = ctypes.c_int
560
class datum_t(ctypes.Structure):
561
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
562
('size', ctypes.c_uint)]
564
class openpgp_crt_int(ctypes.Structure):
566
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
567
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
568
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
569
credentials_type_t = ctypes.c_int
570
transport_ptr_t = ctypes.c_void_p
571
close_request_t = ctypes.c_int
574
class Error(Exception):
575
def __init__(self, message=None, code=None, args=()):
576
# Default usage is by a message string, but if a return
577
# code is passed, convert it to a string with
580
if message is None and code is not None:
581
message = gnutls.strerror(code)
582
return super(gnutls.Error, self).__init__(
585
class CertificateSecurityError(Error):
591
self._c_object = gnutls.certificate_credentials_t()
592
gnutls.certificate_allocate_credentials(
593
ctypes.byref(self._c_object))
594
self.type = gnutls.CRD_CERTIFICATE
597
gnutls.certificate_free_credentials(self._c_object)
600
def __init__(self, socket, credentials=None):
601
self._c_object = gnutls.session_t()
602
gnutls_flags = gnutls.CLIENT
603
if gnutls.check_version(b"3.5.6"):
604
gnutls_flags |= gnutls.NO_TICKETS
606
gnutls_flags |= gnutls.ENABLE_RAWPK
607
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
609
gnutls.set_default_priority(self._c_object)
610
gnutls.transport_set_ptr(self._c_object, socket.fileno())
611
gnutls.handshake_set_private_extensions(self._c_object,
614
if credentials is None:
615
credentials = gnutls.Credentials()
616
gnutls.credentials_set(self._c_object, credentials.type,
617
ctypes.cast(credentials._c_object,
619
self.credentials = credentials
622
gnutls.deinit(self._c_object)
625
return gnutls.handshake(self._c_object)
627
def send(self, data):
631
data_len -= gnutls.record_send(self._c_object,
636
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
638
# Error handling functions
639
def _error_code(result):
640
"""A function to raise exceptions on errors, suitable
641
for the 'restype' attribute on ctypes functions"""
644
if result == gnutls.E_NO_CERTIFICATE_FOUND:
645
raise gnutls.CertificateSecurityError(code=result)
646
raise gnutls.Error(code=result)
648
def _retry_on_error(result, func, arguments):
649
"""A function to retry on some errors, suitable
650
for the 'errcheck' attribute on ctypes functions"""
652
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
653
return _error_code(result)
654
result = func(*arguments)
657
# Unless otherwise indicated, the function declarations below are
658
# all from the gnutls/gnutls.h C header file.
661
priority_set_direct = _library.gnutls_priority_set_direct
662
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
663
ctypes.POINTER(ctypes.c_char_p)]
664
priority_set_direct.restype = _error_code
666
init = _library.gnutls_init
667
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
668
init.restype = _error_code
670
set_default_priority = _library.gnutls_set_default_priority
671
set_default_priority.argtypes = [session_t]
672
set_default_priority.restype = _error_code
674
record_send = _library.gnutls_record_send
675
record_send.argtypes = [session_t, ctypes.c_void_p,
677
record_send.restype = ctypes.c_ssize_t
678
record_send.errcheck = _retry_on_error
680
certificate_allocate_credentials = (
681
_library.gnutls_certificate_allocate_credentials)
682
certificate_allocate_credentials.argtypes = [
683
ctypes.POINTER(certificate_credentials_t)]
684
certificate_allocate_credentials.restype = _error_code
686
certificate_free_credentials = (
687
_library.gnutls_certificate_free_credentials)
688
certificate_free_credentials.argtypes = [
689
certificate_credentials_t]
690
certificate_free_credentials.restype = None
692
handshake_set_private_extensions = (
693
_library.gnutls_handshake_set_private_extensions)
694
handshake_set_private_extensions.argtypes = [session_t,
696
handshake_set_private_extensions.restype = None
698
credentials_set = _library.gnutls_credentials_set
699
credentials_set.argtypes = [session_t, credentials_type_t,
701
credentials_set.restype = _error_code
703
strerror = _library.gnutls_strerror
704
strerror.argtypes = [ctypes.c_int]
705
strerror.restype = ctypes.c_char_p
707
certificate_type_get = _library.gnutls_certificate_type_get
708
certificate_type_get.argtypes = [session_t]
709
certificate_type_get.restype = _error_code
711
certificate_get_peers = _library.gnutls_certificate_get_peers
712
certificate_get_peers.argtypes = [session_t,
713
ctypes.POINTER(ctypes.c_uint)]
714
certificate_get_peers.restype = ctypes.POINTER(datum_t)
716
global_set_log_level = _library.gnutls_global_set_log_level
717
global_set_log_level.argtypes = [ctypes.c_int]
718
global_set_log_level.restype = None
720
global_set_log_function = _library.gnutls_global_set_log_function
721
global_set_log_function.argtypes = [log_func]
722
global_set_log_function.restype = None
724
deinit = _library.gnutls_deinit
725
deinit.argtypes = [session_t]
726
deinit.restype = None
728
handshake = _library.gnutls_handshake
729
handshake.argtypes = [session_t]
730
handshake.restype = _error_code
731
handshake.errcheck = _retry_on_error
733
transport_set_ptr = _library.gnutls_transport_set_ptr
734
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
735
transport_set_ptr.restype = None
737
bye = _library.gnutls_bye
738
bye.argtypes = [session_t, close_request_t]
739
bye.restype = _error_code
740
bye.errcheck = _retry_on_error
742
check_version = _library.gnutls_check_version
743
check_version.argtypes = [ctypes.c_char_p]
744
check_version.restype = ctypes.c_char_p
746
_need_version = b"3.3.0"
747
if check_version(_need_version) is None:
748
raise self.Error("Needs GnuTLS {} or later"
749
.format(_need_version))
751
_tls_rawpk_version = b"3.6.6"
752
has_rawpk = bool(check_version(_tls_rawpk_version))
756
class pubkey_st(ctypes.Structure):
758
pubkey_t = ctypes.POINTER(pubkey_st)
760
x509_crt_fmt_t = ctypes.c_int
762
# All the function declarations below are from gnutls/abstract.h
763
pubkey_init = _library.gnutls_pubkey_init
764
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
765
pubkey_init.restype = _error_code
767
pubkey_import = _library.gnutls_pubkey_import
768
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
770
pubkey_import.restype = _error_code
772
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
773
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
774
ctypes.POINTER(ctypes.c_ubyte),
775
ctypes.POINTER(ctypes.c_size_t)]
776
pubkey_get_key_id.restype = _error_code
778
pubkey_deinit = _library.gnutls_pubkey_deinit
779
pubkey_deinit.argtypes = [pubkey_t]
780
pubkey_deinit.restype = None
782
# All the function declarations below are from gnutls/openpgp.h
784
openpgp_crt_init = _library.gnutls_openpgp_crt_init
785
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
786
openpgp_crt_init.restype = _error_code
788
openpgp_crt_import = _library.gnutls_openpgp_crt_import
789
openpgp_crt_import.argtypes = [openpgp_crt_t,
790
ctypes.POINTER(datum_t),
792
openpgp_crt_import.restype = _error_code
794
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
795
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
796
ctypes.POINTER(ctypes.c_uint)]
797
openpgp_crt_verify_self.restype = _error_code
799
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
800
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
801
openpgp_crt_deinit.restype = None
803
openpgp_crt_get_fingerprint = (
804
_library.gnutls_openpgp_crt_get_fingerprint)
805
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
809
openpgp_crt_get_fingerprint.restype = _error_code
811
if check_version(b"3.6.4"):
812
certificate_type_get2 = _library.gnutls_certificate_type_get2
813
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
814
certificate_type_get2.restype = _error_code
816
# Remove non-public functions
817
del _error_code, _retry_on_error
820
def call_pipe(connection, # : multiprocessing.Connection
821
func, *args, **kwargs):
822
"""This function is meant to be called by multiprocessing.Process
824
This function runs func(*args, **kwargs), and writes the resulting
825
return value on the provided multiprocessing.Connection.
827
connection.send(func(*args, **kwargs))
395
def timedelta_to_milliseconds(td):
396
"Convert a datetime.timedelta() to milliseconds"
397
return ((td.days * 24 * 60 * 60 * 1000)
398
+ (td.seconds * 1000)
399
+ (td.microseconds // 1000))
402
class Client(object):
832
403
"""A representation of a client host served by this server.
835
406
approved: bool(); 'None' if not yet approved/disapproved
836
407
approval_delay: datetime.timedelta(); Time to wait for approval
837
408
approval_duration: datetime.timedelta(); Duration of one approval
838
checker: multiprocessing.Process(); a running checker process used
839
to see if the client lives. 'None' if no process is
841
checker_callback_tag: a GLib event source tag, or None
409
checker: subprocess.Popen(); a running checker process used
410
to see if the client lives.
411
'None' if no process is running.
412
checker_callback_tag: a gobject event source tag, or None
842
413
checker_command: string; External command which is run to check
843
414
if client lives. %() expansions are done at
844
415
runtime with vars(self) as dict, so that for
845
416
instance %(name)s can be used in the command.
846
checker_initiator_tag: a GLib event source tag, or None
417
checker_initiator_tag: a gobject event source tag, or None
847
418
created: datetime.datetime(); (UTC) object creation
848
419
client_structure: Object describing what attributes a client has
849
420
and is used for storing the client at exit
850
421
current_checker_command: string; current running checker_command
851
disable_initiator_tag: a GLib event source tag, or None
422
disable_initiator_tag: a gobject event source tag, or None
853
424
fingerprint: string (40 or 32 hexadecimal digits); used to
854
uniquely identify an OpenPGP client
855
key_id: string (64 hexadecimal digits); used to uniquely identify
856
a client using raw public keys
425
uniquely identify the client
857
426
host: string; available for use by the checker command
858
427
interval: datetime.timedelta(); How often to start a new checker
859
428
last_approval_request: datetime.datetime(); (UTC) or None
1016
591
logger.info("Disabling client %s", self.name)
1017
592
if getattr(self, "disable_initiator_tag", None) is not None:
1018
GLib.source_remove(self.disable_initiator_tag)
593
gobject.source_remove(self.disable_initiator_tag)
1019
594
self.disable_initiator_tag = None
1020
595
self.expires = None
1021
596
if getattr(self, "checker_initiator_tag", None) is not None:
1022
GLib.source_remove(self.checker_initiator_tag)
597
gobject.source_remove(self.checker_initiator_tag)
1023
598
self.checker_initiator_tag = None
1024
599
self.stop_checker()
1025
600
self.enabled = False
1027
602
self.send_changedstate()
1028
# Do not run this again if called by a GLib.timeout_add
603
# Do not run this again if called by a gobject.timeout_add
1031
606
def __del__(self):
1034
609
def init_checker(self):
1035
610
# Schedule a new checker to be started an 'interval' from now,
1036
611
# and every interval from then on.
1037
612
if self.checker_initiator_tag is not None:
1038
GLib.source_remove(self.checker_initiator_tag)
1039
self.checker_initiator_tag = GLib.timeout_add(
1040
int(self.interval.total_seconds() * 1000),
613
gobject.source_remove(self.checker_initiator_tag)
614
self.checker_initiator_tag = (gobject.timeout_add
615
(self.interval_milliseconds(),
1042
617
# Schedule a disable() when 'timeout' has passed
1043
618
if self.disable_initiator_tag is not None:
1044
GLib.source_remove(self.disable_initiator_tag)
1045
self.disable_initiator_tag = GLib.timeout_add(
1046
int(self.timeout.total_seconds() * 1000), self.disable)
619
gobject.source_remove(self.disable_initiator_tag)
620
self.disable_initiator_tag = (gobject.timeout_add
621
(self.timeout_milliseconds(),
1047
623
# Also start a new checker *right now*.
1048
624
self.start_checker()
1050
def checker_callback(self, source, condition, connection,
626
def checker_callback(self, pid, condition, command):
1052
627
"""The checker has completed, so take appropriate actions."""
1053
# Read return code from connection (see call_pipe)
1054
returncode = connection.recv()
1057
628
self.checker_callback_tag = None
1058
629
self.checker = None
1061
self.last_checker_status = returncode
1062
self.last_checker_signal = None
630
if os.WIFEXITED(condition):
631
self.last_checker_status = os.WEXITSTATUS(condition)
1063
632
if self.last_checker_status == 0:
1064
633
logger.info("Checker for %(name)s succeeded",
1066
635
self.checked_ok()
1068
logger.info("Checker for %(name)s failed", vars(self))
637
logger.info("Checker for %(name)s failed",
1070
640
self.last_checker_status = -1
1071
self.last_checker_signal = -returncode
1072
641
logger.warning("Checker for %(name)s crashed?",
1076
644
def checked_ok(self):
1077
645
"""Assert that the client has been seen, alive and well."""
1078
646
self.last_checked_ok = datetime.datetime.utcnow()
1079
647
self.last_checker_status = 0
1080
self.last_checker_signal = None
1081
648
self.bump_timeout()
1083
650
def bump_timeout(self, timeout=None):
1084
651
"""Bump up the timeout for this client."""
1085
652
if timeout is None:
1086
653
timeout = self.timeout
1087
654
if self.disable_initiator_tag is not None:
1088
GLib.source_remove(self.disable_initiator_tag)
655
gobject.source_remove(self.disable_initiator_tag)
1089
656
self.disable_initiator_tag = None
1090
657
if getattr(self, "enabled", False):
1091
self.disable_initiator_tag = GLib.timeout_add(
1092
int(timeout.total_seconds() * 1000), self.disable)
658
self.disable_initiator_tag = (gobject.timeout_add
659
(timedelta_to_milliseconds
660
(timeout), self.disable))
1093
661
self.expires = datetime.datetime.utcnow() + timeout
1095
663
def need_approval(self):
1096
664
self.last_approval_request = datetime.datetime.utcnow()
1098
666
def start_checker(self):
1099
667
"""Start a new checker subprocess if one is not running.
1101
669
If a checker already exists, leave it running and do
1103
671
# The reason for not killing a running checker is that if we
1108
676
# checkers alone, the checker would have to take more time
1109
677
# than 'timeout' for the client to be disabled, which is as it
1112
if self.checker is not None and not self.checker.is_alive():
1113
logger.warning("Checker was not alive; joining")
680
# If a checker exists, make sure it is not a zombie
682
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
683
except (AttributeError, OSError) as error:
684
if (isinstance(error, OSError)
685
and error.errno != errno.ECHILD):
689
logger.warning("Checker was a zombie")
690
gobject.source_remove(self.checker_callback_tag)
691
self.checker_callback(pid, status,
692
self.current_checker_command)
1116
693
# Start a new checker if needed
1117
694
if self.checker is None:
1118
695
# Escape attributes for the shell
1120
attr: re.escape(str(getattr(self, attr)))
1121
for attr in self.runtime_expansions}
696
escaped_attrs = dict(
697
(attr, re.escape(unicode(getattr(self, attr))))
699
self.runtime_expansions)
1123
701
command = self.checker_command % escaped_attrs
1124
702
except TypeError as error:
1125
703
logger.error('Could not format string "%s"',
1126
self.checker_command,
704
self.checker_command, exc_info=error)
705
return True # Try again later
706
self.current_checker_command = command
708
logger.info("Starting checker %r for %s",
710
# We don't need to redirect stdout and stderr, since
711
# in normal mode, that is already done by daemon(),
712
# and in debug mode we don't want to. (Stdin is
713
# always replaced by /dev/null.)
714
self.checker = subprocess.Popen(command,
717
except OSError as error:
718
logger.error("Failed to start subprocess",
1128
return True # Try again later
1129
self.current_checker_command = command
1130
logger.info("Starting checker %r for %s", command,
1132
# We don't need to redirect stdout and stderr, since
1133
# in normal mode, that is already done by daemon(),
1134
# and in debug mode we don't want to. (Stdin is
1135
# always replaced by /dev/null.)
1136
# The exception is when not debugging but nevertheless
1137
# running in the foreground; use the previously
1139
popen_args = {"close_fds": True,
1142
if (not self.server_settings["debug"]
1143
and self.server_settings["foreground"]):
1144
popen_args.update({"stdout": wnull,
1146
pipe = multiprocessing.Pipe(duplex=False)
1147
self.checker = multiprocessing.Process(
1149
args=(pipe[1], subprocess.call, command),
1151
self.checker.start()
1152
self.checker_callback_tag = GLib.io_add_watch(
1153
GLib.IOChannel.unix_new(pipe[0].fileno()),
1154
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1155
self.checker_callback, pipe[0], command)
1156
# Re-run this periodically if run by GLib.timeout_add
720
self.checker_callback_tag = (gobject.child_watch_add
722
self.checker_callback,
724
# The checker may have completed before the gobject
725
# watch was added. Check for this.
726
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
728
gobject.source_remove(self.checker_callback_tag)
729
self.checker_callback(pid, status, command)
730
# Re-run this periodically if run by gobject.timeout_add
1159
733
def stop_checker(self):
1160
734
"""Force the checker process, if any, to stop."""
1161
735
if self.checker_callback_tag:
1162
GLib.source_remove(self.checker_callback_tag)
736
gobject.source_remove(self.checker_callback_tag)
1163
737
self.checker_callback_tag = None
1164
738
if getattr(self, "checker", None) is None:
1166
740
logger.debug("Stopping checker for %(name)s", vars(self))
1167
self.checker.terminate()
742
self.checker.terminate()
744
#if self.checker.poll() is None:
745
# self.checker.kill()
746
except OSError as error:
747
if error.errno != errno.ESRCH: # No such process
1168
749
self.checker = None
1171
def dbus_service_property(dbus_interface,
752
def dbus_service_property(dbus_interface, signature="v",
753
access="readwrite", byte_arrays=False):
1175
754
"""Decorators for marking methods of a DBusObjectWithProperties to
1176
755
become properties on the D-Bus.
1178
757
The decorated method will be called with no arguments by "Get"
1179
758
and with one argument by "Set".
1181
760
The parameters, where they are supported, are the same as
1182
761
dbus.service.method, except there is only "signature", since the
1183
762
type from Get() and the type sent to Set() is the same.
1266
class DBusObjectWithAnnotations(dbus.service.Object):
1267
"""A D-Bus object with annotations.
1269
Classes inheriting from this can use the dbus_annotations
1270
decorator to add annotations to methods or signals.
838
class DBusObjectWithProperties(dbus.service.Object):
839
"""A D-Bus object with properties.
841
Classes inheriting from this can use the dbus_service_property
842
decorator to expose methods as D-Bus properties. It exposes the
843
standard Get(), Set(), and GetAll() methods on the D-Bus.
1274
847
def _is_dbus_thing(thing):
1275
848
"""Returns a function testing if an attribute is a D-Bus thing
1277
850
If called like _is_dbus_thing("method") it returns a function
1278
851
suitable for use as predicate to inspect.getmembers().
1280
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
853
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1283
856
def _get_all_dbus_things(self, thing):
1284
857
"""Returns a generator of (name, attribute) pairs
1286
return ((getattr(athing.__get__(self), "_dbus_name", name),
859
return ((getattr(athing.__get__(self), "_dbus_name",
1287
861
athing.__get__(self))
1288
862
for cls in self.__class__.__mro__
1289
863
for name, athing in
1290
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1292
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1294
path_keyword='object_path',
1295
connection_keyword='connection')
1296
def Introspect(self, object_path, connection):
1297
"""Overloading of standard D-Bus method.
1299
Inserts annotation tags on methods and signals.
1301
xmlstring = dbus.service.Object.Introspect(self, object_path,
1304
document = xml.dom.minidom.parseString(xmlstring)
1306
for if_tag in document.getElementsByTagName("interface"):
1307
# Add annotation tags
1308
for typ in ("method", "signal"):
1309
for tag in if_tag.getElementsByTagName(typ):
1311
for name, prop in (self.
1312
_get_all_dbus_things(typ)):
1313
if (name == tag.getAttribute("name")
1314
and prop._dbus_interface
1315
== if_tag.getAttribute("name")):
1316
annots.update(getattr(
1317
prop, "_dbus_annotations", {}))
1318
for name, value in annots.items():
1319
ann_tag = document.createElement(
1321
ann_tag.setAttribute("name", name)
1322
ann_tag.setAttribute("value", value)
1323
tag.appendChild(ann_tag)
1324
# Add interface annotation tags
1325
for annotation, value in dict(
1326
itertools.chain.from_iterable(
1327
annotations().items()
1328
for name, annotations
1329
in self._get_all_dbus_things("interface")
1330
if name == if_tag.getAttribute("name")
1332
ann_tag = document.createElement("annotation")
1333
ann_tag.setAttribute("name", annotation)
1334
ann_tag.setAttribute("value", value)
1335
if_tag.appendChild(ann_tag)
1336
# Fix argument name for the Introspect method itself
1337
if (if_tag.getAttribute("name")
1338
== dbus.INTROSPECTABLE_IFACE):
1339
for cn in if_tag.getElementsByTagName("method"):
1340
if cn.getAttribute("name") == "Introspect":
1341
for arg in cn.getElementsByTagName("arg"):
1342
if (arg.getAttribute("direction")
1344
arg.setAttribute("name",
1346
xmlstring = document.toxml("utf-8")
1348
except (AttributeError, xml.dom.DOMException,
1349
xml.parsers.expat.ExpatError) as error:
1350
logger.error("Failed to override Introspection method",
1355
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1356
"""A D-Bus object with properties.
1358
Classes inheriting from this can use the dbus_service_property
1359
decorator to expose methods as D-Bus properties. It exposes the
1360
standard Get(), Set(), and GetAll() methods on the D-Bus.
864
inspect.getmembers(cls,
865
self._is_dbus_thing(thing)))
1363
867
def _get_dbus_property(self, interface_name, property_name):
1364
868
"""Returns a bound method if one exists which is a D-Bus
1365
869
property with the specified name and interface.
1367
for cls in self.__class__.__mro__:
1368
for name, value in inspect.getmembers(
1369
cls, self._is_dbus_thing("property")):
871
for cls in self.__class__.__mro__:
872
for name, value in (inspect.getmembers
874
self._is_dbus_thing("property"))):
1370
875
if (value._dbus_name == property_name
1371
876
and value._dbus_interface == interface_name):
1372
877
return value.__get__(self)
1374
879
# No such property
1375
raise DBusPropertyNotFound("{}:{}.{}".format(
1376
self.dbus_object_path, interface_name, property_name))
1379
def _get_all_interface_names(cls):
1380
"""Get a sequence of all interfaces supported by an object"""
1381
return (name for name in set(getattr(getattr(x, attr),
1382
"_dbus_interface", None)
1383
for x in (inspect.getmro(cls))
1385
if name is not None)
1387
@dbus.service.method(dbus.PROPERTIES_IFACE,
880
raise DBusPropertyNotFound(self.dbus_object_path + ":"
881
+ interface_name + "."
884
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1389
885
out_signature="v")
1390
886
def Get(self, interface_name, property_name):
1391
887
"""Standard D-Bus property Get() method, see D-Bus standard.
1520
1017
return xmlstring
1524
dbus.OBJECT_MANAGER_IFACE
1525
except AttributeError:
1526
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1529
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1530
"""A D-Bus object with an ObjectManager.
1532
Classes inheriting from this exposes the standard
1533
GetManagedObjects call and the InterfacesAdded and
1534
InterfacesRemoved signals on the standard
1535
"org.freedesktop.DBus.ObjectManager" interface.
1537
Note: No signals are sent automatically; they must be sent
1540
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1541
out_signature="a{oa{sa{sv}}}")
1542
def GetManagedObjects(self):
1543
"""This function must be overridden"""
1544
raise NotImplementedError()
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1547
signature="oa{sa{sv}}")
1548
def InterfacesAdded(self, object_path, interfaces_and_properties):
1551
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1552
def InterfacesRemoved(self, object_path, interfaces):
1555
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1557
path_keyword='object_path',
1558
connection_keyword='connection')
1559
def Introspect(self, object_path, connection):
1560
"""Overloading of standard D-Bus method.
1562
Override return argument name of GetManagedObjects to be
1563
"objpath_interfaces_and_properties"
1565
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1569
document = xml.dom.minidom.parseString(xmlstring)
1571
for if_tag in document.getElementsByTagName("interface"):
1572
# Fix argument name for the GetManagedObjects method
1573
if (if_tag.getAttribute("name")
1574
== dbus.OBJECT_MANAGER_IFACE):
1575
for cn in if_tag.getElementsByTagName("method"):
1576
if (cn.getAttribute("name")
1577
== "GetManagedObjects"):
1578
for arg in cn.getElementsByTagName("arg"):
1579
if (arg.getAttribute("direction")
1583
"objpath_interfaces"
1585
xmlstring = document.toxml("utf-8")
1587
except (AttributeError, xml.dom.DOMException,
1588
xml.parsers.expat.ExpatError) as error:
1589
logger.error("Failed to override Introspection method",
1594
1020
def datetime_to_dbus(dt, variant_level=0):
1595
1021
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1597
return dbus.String("", variant_level=variant_level)
1598
return dbus.String(dt.isoformat(), variant_level=variant_level)
1023
return dbus.String("", variant_level = variant_level)
1024
return dbus.String(dt.isoformat(),
1025
variant_level=variant_level)
1601
1028
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1962
1381
server to mandos-client
1966
1385
# Rejected - signal
1967
1386
@dbus.service.signal(_interface, signature="s")
1968
1387
def Rejected(self, reason):
1972
1391
# NeedApproval - signal
1973
1392
@dbus.service.signal(_interface, signature="tb")
1974
1393
def NeedApproval(self, timeout, default):
1976
1395
return self.need_approval()
1980
1399
# Approve - method
1981
1400
@dbus.service.method(_interface, in_signature="b")
1982
1401
def Approve(self, value):
1983
1402
self.approve(value)
1985
1404
# CheckedOK - method
1986
1405
@dbus.service.method(_interface)
1987
1406
def CheckedOK(self):
1988
1407
self.checked_ok()
1990
1409
# Enable - method
1991
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1992
1410
@dbus.service.method(_interface)
1993
1411
def Enable(self):
1997
1415
# StartChecker - method
1998
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1999
1416
@dbus.service.method(_interface)
2000
1417
def StartChecker(self):
2002
1419
self.start_checker()
2004
1421
# Disable - method
2005
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2006
1422
@dbus.service.method(_interface)
2007
1423
def Disable(self):
2011
1427
# StopChecker - method
2012
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2013
1428
@dbus.service.method(_interface)
2014
1429
def StopChecker(self):
2015
1430
self.stop_checker()
2019
1434
# ApprovalPending - property
2020
1435
@dbus_service_property(_interface, signature="b", access="read")
2021
1436
def ApprovalPending_dbus_property(self):
2022
1437
return dbus.Boolean(bool(self.approvals_pending))
2024
1439
# ApprovedByDefault - property
2025
@dbus_service_property(_interface,
1440
@dbus_service_property(_interface, signature="b",
2027
1441
access="readwrite")
2028
1442
def ApprovedByDefault_dbus_property(self, value=None):
2029
1443
if value is None: # get
2030
1444
return dbus.Boolean(self.approved_by_default)
2031
1445
self.approved_by_default = bool(value)
2033
1447
# ApprovalDelay - property
2034
@dbus_service_property(_interface,
1448
@dbus_service_property(_interface, signature="t",
2036
1449
access="readwrite")
2037
1450
def ApprovalDelay_dbus_property(self, value=None):
2038
1451
if value is None: # get
2039
return dbus.UInt64(self.approval_delay.total_seconds()
1452
return dbus.UInt64(self.approval_delay_milliseconds())
2041
1453
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2043
1455
# ApprovalDuration - property
2044
@dbus_service_property(_interface,
1456
@dbus_service_property(_interface, signature="t",
2046
1457
access="readwrite")
2047
1458
def ApprovalDuration_dbus_property(self, value=None):
2048
1459
if value is None: # get
2049
return dbus.UInt64(self.approval_duration.total_seconds()
1460
return dbus.UInt64(timedelta_to_milliseconds(
1461
self.approval_duration))
2051
1462
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2053
1464
# Name - property
2055
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2056
1465
@dbus_service_property(_interface, signature="s", access="read")
2057
1466
def Name_dbus_property(self):
2058
1467
return dbus.String(self.name)
2062
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2063
@dbus_service_property(_interface, signature="s", access="read")
2064
def KeyID_dbus_property(self):
2065
return dbus.String(self.key_id)
2067
1469
# Fingerprint - property
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2070
1470
@dbus_service_property(_interface, signature="s", access="read")
2071
1471
def Fingerprint_dbus_property(self):
2072
1472
return dbus.String(self.fingerprint)
2074
1474
# Host - property
2075
@dbus_service_property(_interface,
1475
@dbus_service_property(_interface, signature="s",
2077
1476
access="readwrite")
2078
1477
def Host_dbus_property(self, value=None):
2079
1478
if value is None: # get
2080
1479
return dbus.String(self.host)
2081
self.host = str(value)
1480
self.host = unicode(value)
2083
1482
# Created - property
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
1483
@dbus_service_property(_interface, signature="s", access="read")
2087
1484
def Created_dbus_property(self):
2088
1485
return datetime_to_dbus(self.created)
2090
1487
# LastEnabled - property
2091
1488
@dbus_service_property(_interface, signature="s", access="read")
2092
1489
def LastEnabled_dbus_property(self):
2093
1490
return datetime_to_dbus(self.last_enabled)
2095
1492
# Enabled - property
2096
@dbus_service_property(_interface,
1493
@dbus_service_property(_interface, signature="b",
2098
1494
access="readwrite")
2099
1495
def Enabled_dbus_property(self, value=None):
2100
1496
if value is None: # get
2149
1544
if (getattr(self, "disable_initiator_tag", None)
2152
GLib.source_remove(self.disable_initiator_tag)
2153
self.disable_initiator_tag = GLib.timeout_add(
2154
int((self.expires - now).total_seconds() * 1000),
1547
gobject.source_remove(self.disable_initiator_tag)
1548
self.disable_initiator_tag = (
1549
gobject.timeout_add(
1550
timedelta_to_milliseconds(self.expires - now),
2157
1553
# ExtendedTimeout - property
2158
@dbus_service_property(_interface,
1554
@dbus_service_property(_interface, signature="t",
2160
1555
access="readwrite")
2161
1556
def ExtendedTimeout_dbus_property(self, value=None):
2162
1557
if value is None: # get
2163
return dbus.UInt64(self.extended_timeout.total_seconds()
1558
return dbus.UInt64(self.extended_timeout_milliseconds())
2165
1559
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2167
1561
# Interval - property
2168
@dbus_service_property(_interface,
1562
@dbus_service_property(_interface, signature="t",
2170
1563
access="readwrite")
2171
1564
def Interval_dbus_property(self, value=None):
2172
1565
if value is None: # get
2173
return dbus.UInt64(self.interval.total_seconds() * 1000)
1566
return dbus.UInt64(self.interval_milliseconds())
2174
1567
self.interval = datetime.timedelta(0, 0, 0, value)
2175
1568
if getattr(self, "checker_initiator_tag", None) is None:
2177
1570
if self.enabled:
2178
1571
# Reschedule checker run
2179
GLib.source_remove(self.checker_initiator_tag)
2180
self.checker_initiator_tag = GLib.timeout_add(
2181
value, self.start_checker)
2182
self.start_checker() # Start one now, too
1572
gobject.source_remove(self.checker_initiator_tag)
1573
self.checker_initiator_tag = (gobject.timeout_add
1574
(value, self.start_checker))
1575
self.start_checker() # Start one now, too
2184
1577
# Checker - property
2185
@dbus_service_property(_interface,
1578
@dbus_service_property(_interface, signature="s",
2187
1579
access="readwrite")
2188
1580
def Checker_dbus_property(self, value=None):
2189
1581
if value is None: # get
2190
1582
return dbus.String(self.checker_command)
2191
self.checker_command = str(value)
1583
self.checker_command = unicode(value)
2193
1585
# CheckerRunning - property
2194
@dbus_service_property(_interface,
1586
@dbus_service_property(_interface, signature="b",
2196
1587
access="readwrite")
2197
1588
def CheckerRunning_dbus_property(self, value=None):
2198
1589
if value is None: # get
2255
1636
class ClientHandler(socketserver.BaseRequestHandler, object):
2256
1637
"""A class to handle client connections.
2258
1639
Instantiated once for each connection to handle it.
2259
1640
Note: This will run in its own forked process."""
2261
1642
def handle(self):
2262
1643
with contextlib.closing(self.server.child_pipe) as child_pipe:
2263
1644
logger.info("TCP connection from: %s",
2264
str(self.client_address))
1645
unicode(self.client_address))
2265
1646
logger.debug("Pipe FD: %d",
2266
1647
self.server.child_pipe.fileno())
2268
session = gnutls.ClientSession(self.request)
2270
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2271
# "+AES-256-CBC", "+SHA1",
2272
# "+COMP-NULL", "+CTYPE-OPENPGP",
1649
session = (gnutls.connection
1650
.ClientSession(self.request,
1652
.X509Credentials()))
1654
# Note: gnutls.connection.X509Credentials is really a
1655
# generic GnuTLS certificate credentials object so long as
1656
# no X.509 keys are added to it. Therefore, we can use it
1657
# here despite using OpenPGP certificates.
1659
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1660
# "+AES-256-CBC", "+SHA1",
1661
# "+COMP-NULL", "+CTYPE-OPENPGP",
2274
1663
# Use a fallback default, since this MUST be set.
2275
1664
priority = self.server.gnutls_priority
2276
1665
if priority is None:
2277
1666
priority = "NORMAL"
2278
gnutls.priority_set_direct(session._c_object,
2279
priority.encode("utf-8"),
1667
(gnutls.library.functions
1668
.gnutls_priority_set_direct(session._c_object,
2282
1671
# Start communication using the Mandos protocol
2283
1672
# Get protocol number
2284
1673
line = self.request.makefile().readline()
2285
1674
logger.debug("Protocol version: %r", line)
2287
1676
if int(line.strip().split()[0]) > 1:
2288
raise RuntimeError(line)
2289
1678
except (ValueError, IndexError, RuntimeError) as error:
2290
1679
logger.error("Unknown protocol version: %s", error)
2293
1682
# Start GnuTLS connection
2295
1684
session.handshake()
2296
except gnutls.Error as error:
1685
except gnutls.errors.GNUTLSError as error:
2297
1686
logger.warning("Handshake failed: %s", error)
2298
1687
# Do not run session.bye() here: the session is not
2299
1688
# established. Just abandon the request.
2301
1690
logger.debug("Handshake succeeded")
2303
1692
approval_required = False
2305
if gnutls.has_rawpk:
2308
key_id = self.key_id(
2309
self.peer_certificate(session))
2310
except (TypeError, gnutls.Error) as error:
2311
logger.warning("Bad certificate: %s", error)
2313
logger.debug("Key ID: %s", key_id)
2318
fpr = self.fingerprint(
2319
self.peer_certificate(session))
2320
except (TypeError, gnutls.Error) as error:
2321
logger.warning("Bad certificate: %s", error)
2323
logger.debug("Fingerprint: %s", fpr)
2326
client = ProxyClient(child_pipe, key_id, fpr,
1695
fpr = self.fingerprint(self.peer_certificate
1698
gnutls.errors.GNUTLSError) as error:
1699
logger.warning("Bad certificate: %s", error)
1701
logger.debug("Fingerprint: %s", fpr)
1704
client = ProxyClient(child_pipe, fpr,
2327
1705
self.client_address)
2328
1706
except KeyError:
2331
1709
if client.approval_delay:
2332
1710
delay = client.approval_delay
2333
1711
client.approvals_pending += 1
2334
1712
approval_required = True
2337
1715
if not client.enabled:
2338
1716
logger.info("Client %s is disabled",
2340
1718
if self.server.use_dbus:
2341
1719
# Emit D-Bus signal
2342
1720
client.Rejected("Disabled")
2345
1723
if client.approved or not client.approval_delay:
2346
# We are approved or approval is disabled
1724
#We are approved or approval is disabled
2348
1726
elif client.approved is None:
2349
1727
logger.info("Client %s needs approval",
2382
1762
delay -= time2 - time
2385
session.send(client.secret)
2386
except gnutls.Error as error:
2387
logger.warning("gnutls send failed",
1765
while sent_size < len(client.secret):
1767
sent = session.send(client.secret[sent_size:])
1768
except gnutls.errors.GNUTLSError as error:
1769
logger.warning("gnutls send failed",
1772
logger.debug("Sent: %d, remaining: %d",
1773
sent, len(client.secret)
1774
- (sent_size + sent))
2391
1777
logger.info("Sending secret to %s", client.name)
2392
1778
# bump the timeout using extended_timeout
2393
1779
client.bump_timeout(client.extended_timeout)
2394
1780
if self.server.use_dbus:
2395
1781
# Emit D-Bus signal
2396
1782
client.GotSecret()
2399
1785
if approval_required:
2400
1786
client.approvals_pending -= 1
2403
except gnutls.Error as error:
1789
except gnutls.errors.GNUTLSError as error:
2404
1790
logger.warning("GnuTLS bye failed",
2405
1791
exc_info=error)
2408
1794
def peer_certificate(session):
2409
"Return the peer's certificate as a bytestring"
2411
cert_type = gnutls.certificate_type_get2(session._c_object,
2413
except AttributeError:
2414
cert_type = gnutls.certificate_type_get(session._c_object)
2415
if gnutls.has_rawpk:
2416
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2418
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2419
# If not a valid certificate type...
2420
if cert_type not in valid_cert_types:
2421
logger.info("Cert type %r not in %r", cert_type,
2423
# ...return invalid data
1795
"Return the peer's OpenPGP certificate as a bytestring"
1796
# If not an OpenPGP certificate...
1797
if (gnutls.library.functions
1798
.gnutls_certificate_type_get(session._c_object)
1799
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1800
# ...do the normal thing
1801
return session.peer_certificate
2425
1802
list_size = ctypes.c_uint(1)
2426
cert_list = (gnutls.certificate_get_peers
1803
cert_list = (gnutls.library.functions
1804
.gnutls_certificate_get_peers
2427
1805
(session._c_object, ctypes.byref(list_size)))
2428
1806
if not bool(cert_list) and list_size.value != 0:
2429
raise gnutls.Error("error getting peer certificate")
1807
raise gnutls.errors.GNUTLSError("error getting peer"
2430
1809
if list_size.value == 0:
2432
1811
cert = cert_list[0]
2433
1812
return ctypes.string_at(cert.data, cert.size)
2436
def key_id(certificate):
2437
"Convert a certificate bytestring to a hexdigit key ID"
2438
# New GnuTLS "datum" with the public key
2439
datum = gnutls.datum_t(
2440
ctypes.cast(ctypes.c_char_p(certificate),
2441
ctypes.POINTER(ctypes.c_ubyte)),
2442
ctypes.c_uint(len(certificate)))
2443
# XXX all these need to be created in the gnutls "module"
2444
# New empty GnuTLS certificate
2445
pubkey = gnutls.pubkey_t()
2446
gnutls.pubkey_init(ctypes.byref(pubkey))
2447
# Import the raw public key into the certificate
2448
gnutls.pubkey_import(pubkey,
2449
ctypes.byref(datum),
2450
gnutls.X509_FMT_DER)
2451
# New buffer for the key ID
2452
buf = ctypes.create_string_buffer(32)
2453
buf_len = ctypes.c_size_t(len(buf))
2454
# Get the key ID from the raw public key into the buffer
2455
gnutls.pubkey_get_key_id(pubkey,
2456
gnutls.KEYID_USE_SHA256,
2457
ctypes.cast(ctypes.byref(buf),
2458
ctypes.POINTER(ctypes.c_ubyte)),
2459
ctypes.byref(buf_len))
2460
# Deinit the certificate
2461
gnutls.pubkey_deinit(pubkey)
2463
# Convert the buffer to a Python bytestring
2464
key_id = ctypes.string_at(buf, buf_len.value)
2465
# Convert the bytestring to hexadecimal notation
2466
hex_key_id = binascii.hexlify(key_id).upper()
2470
1815
def fingerprint(openpgp):
2471
1816
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2472
1817
# New GnuTLS "datum" with the OpenPGP public key
2473
datum = gnutls.datum_t(
2474
ctypes.cast(ctypes.c_char_p(openpgp),
2475
ctypes.POINTER(ctypes.c_ubyte)),
2476
ctypes.c_uint(len(openpgp)))
1818
datum = (gnutls.library.types
1819
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1822
ctypes.c_uint(len(openpgp))))
2477
1823
# New empty GnuTLS certificate
2478
crt = gnutls.openpgp_crt_t()
2479
gnutls.openpgp_crt_init(ctypes.byref(crt))
1824
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1825
(gnutls.library.functions
1826
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2480
1827
# Import the OpenPGP public key into the certificate
2481
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2482
gnutls.OPENPGP_FMT_RAW)
1828
(gnutls.library.functions
1829
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1830
gnutls.library.constants
1831
.GNUTLS_OPENPGP_FMT_RAW))
2483
1832
# Verify the self signature in the key
2484
1833
crtverify = ctypes.c_uint()
2485
gnutls.openpgp_crt_verify_self(crt, 0,
2486
ctypes.byref(crtverify))
1834
(gnutls.library.functions
1835
.gnutls_openpgp_crt_verify_self(crt, 0,
1836
ctypes.byref(crtverify)))
2487
1837
if crtverify.value != 0:
2488
gnutls.openpgp_crt_deinit(crt)
2489
raise gnutls.CertificateSecurityError(code
1838
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1839
raise (gnutls.errors.CertificateSecurityError
2491
1841
# New buffer for the fingerprint
2492
1842
buf = ctypes.create_string_buffer(20)
2493
1843
buf_len = ctypes.c_size_t()
2494
1844
# Get the fingerprint from the certificate into the buffer
2495
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2496
ctypes.byref(buf_len))
1845
(gnutls.library.functions
1846
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1847
ctypes.byref(buf_len)))
2497
1848
# Deinit the certificate
2498
gnutls.openpgp_crt_deinit(crt)
1849
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2499
1850
# Convert the buffer to a Python bytestring
2500
1851
fpr = ctypes.string_at(buf, buf_len.value)
2501
1852
# Convert the bytestring to hexadecimal notation
2590
1935
# socket_wrapper(), if socketfd was set.
2591
1936
socketserver.TCPServer.__init__(self, server_address,
2592
1937
RequestHandlerClass)
2594
1939
def server_bind(self):
2595
1940
"""This overrides the normal server_bind() function
2596
1941
to bind to an interface if one was specified, and also NOT to
2597
1942
bind to an address or port if they were not specified."""
2598
global SO_BINDTODEVICE
2599
1943
if self.interface is not None:
2600
1944
if SO_BINDTODEVICE is None:
2601
# Fall back to a hard-coded value which seems to be
2603
logger.warning("SO_BINDTODEVICE not found, trying 25")
2604
SO_BINDTODEVICE = 25
2606
self.socket.setsockopt(
2607
socket.SOL_SOCKET, SO_BINDTODEVICE,
2608
(self.interface + "\0").encode("utf-8"))
2609
except socket.error as error:
2610
if error.errno == errno.EPERM:
2611
logger.error("No permission to bind to"
2612
" interface %s", self.interface)
2613
elif error.errno == errno.ENOPROTOOPT:
2614
logger.error("SO_BINDTODEVICE not available;"
2615
" cannot bind to interface %s",
2617
elif error.errno == errno.ENODEV:
2618
logger.error("Interface %s does not exist,"
2619
" cannot bind", self.interface)
1945
logger.error("SO_BINDTODEVICE does not exist;"
1946
" cannot bind to interface %s",
1950
self.socket.setsockopt(socket.SOL_SOCKET,
1952
str(self.interface + '\0'))
1953
except socket.error as error:
1954
if error.errno == errno.EPERM:
1955
logger.error("No permission to bind to"
1956
" interface %s", self.interface)
1957
elif error.errno == errno.ENOPROTOOPT:
1958
logger.error("SO_BINDTODEVICE not available;"
1959
" cannot bind to interface %s",
1961
elif error.errno == errno.ENODEV:
1962
logger.error("Interface %s does not exist,"
1963
" cannot bind", self.interface)
2622
1966
# Only bind(2) the socket if we really need to.
2623
1967
if self.server_address[0] or self.server_address[1]:
2624
if self.server_address[1]:
2625
self.allow_reuse_address = True
2626
1968
if not self.server_address[0]:
2627
1969
if self.address_family == socket.AF_INET6:
2628
any_address = "::" # in6addr_any
1970
any_address = "::" # in6addr_any
2630
any_address = "0.0.0.0" # INADDR_ANY
1972
any_address = socket.INADDR_ANY
2631
1973
self.server_address = (any_address,
2632
1974
self.server_address[1])
2633
1975
elif not self.server_address[1]:
2634
self.server_address = (self.server_address[0], 0)
1976
self.server_address = (self.server_address[0],
2635
1978
# if self.interface:
2636
1979
# self.server_address = (self.server_address[0],
2667
2005
self.gnutls_priority = gnutls_priority
2668
2006
IPv6_TCPServer.__init__(self, server_address,
2669
2007
RequestHandlerClass,
2670
interface=interface,
2008
interface = interface,
2009
use_ipv6 = use_ipv6,
2010
socketfd = socketfd)
2674
2011
def server_activate(self):
2675
2012
if self.enabled:
2676
2013
return socketserver.TCPServer.server_activate(self)
2678
2015
def enable(self):
2679
2016
self.enabled = True
2681
2018
def add_pipe(self, parent_pipe, proc):
2682
2019
# Call "handle_ipc" for both data and EOF events
2684
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2685
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2686
functools.partial(self.handle_ipc,
2687
parent_pipe=parent_pipe,
2690
def handle_ipc(self, source, condition,
2693
client_object=None):
2020
gobject.io_add_watch(parent_pipe.fileno(),
2021
gobject.IO_IN | gobject.IO_HUP,
2022
functools.partial(self.handle_ipc,
2027
def handle_ipc(self, source, condition, parent_pipe=None,
2028
proc = None, client_object=None):
2694
2029
# error, or the other end of multiprocessing.Pipe has closed
2695
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2030
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2696
2031
# Wait for other process to exit
2700
2035
# Read a request from the child
2701
2036
request = parent_pipe.recv()
2702
2037
command = request[0]
2704
2039
if command == 'init':
2705
key_id = request[1].decode("ascii")
2706
fpr = request[2].decode("ascii")
2707
address = request[3]
2709
for c in self.clients.values():
2710
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2712
if key_id and c.key_id == key_id:
2715
if fpr and c.fingerprint == fpr:
2041
address = request[2]
2043
for c in self.clients.itervalues():
2044
if c.fingerprint == fpr:
2719
logger.info("Client not found for key ID: %s, address"
2720
": %s", key_id or fpr, address)
2048
logger.info("Client not found for fingerprint: %s, ad"
2049
"dress: %s", fpr, address)
2721
2050
if self.use_dbus:
2722
2051
# Emit D-Bus signal
2723
mandos_dbus_service.ClientNotFound(key_id or fpr,
2052
mandos_dbus_service.ClientNotFound(fpr,
2725
2054
parent_pipe.send(False)
2729
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2730
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2731
functools.partial(self.handle_ipc,
2732
parent_pipe=parent_pipe,
2734
client_object=client))
2057
gobject.io_add_watch(parent_pipe.fileno(),
2058
gobject.IO_IN | gobject.IO_HUP,
2059
functools.partial(self.handle_ipc,
2735
2065
parent_pipe.send(True)
2736
2066
# remove the old hook in favor of the new above hook on
2740
2070
funcname = request[1]
2741
2071
args = request[2]
2742
2072
kwargs = request[3]
2744
2074
parent_pipe.send(('data', getattr(client_object,
2745
2075
funcname)(*args,
2748
2078
if command == 'getattr':
2749
2079
attrname = request[1]
2750
if isinstance(client_object.__getattribute__(attrname),
2751
collections.Callable):
2752
parent_pipe.send(('function', ))
2080
if callable(client_object.__getattribute__(attrname)):
2081
parent_pipe.send(('function',))
2755
'data', client_object.__getattribute__(attrname)))
2083
parent_pipe.send(('data', client_object
2084
.__getattribute__(attrname)))
2757
2086
if command == 'setattr':
2758
2087
attrname = request[1]
2759
2088
value = request[2]
2760
2089
setattr(client_object, attrname, value)
2765
2094
def rfc3339_duration_to_delta(duration):
2766
2095
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2768
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2770
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2772
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2774
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2776
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2778
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2780
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2097
>>> rfc3339_duration_to_delta("P7D")
2098
datetime.timedelta(7)
2099
>>> rfc3339_duration_to_delta("PT60S")
2100
datetime.timedelta(0, 60)
2101
>>> rfc3339_duration_to_delta("PT60M")
2102
datetime.timedelta(0, 3600)
2103
>>> rfc3339_duration_to_delta("PT24H")
2104
datetime.timedelta(1)
2105
>>> rfc3339_duration_to_delta("P1W")
2106
datetime.timedelta(7)
2107
>>> rfc3339_duration_to_delta("PT5M30S")
2108
datetime.timedelta(0, 330)
2109
>>> rfc3339_duration_to_delta("P1DT3M20S")
2110
datetime.timedelta(1, 200)
2784
2113
# Parsing an RFC 3339 duration with regular expressions is not
2785
2114
# possible - there would have to be multiple places for the same
2786
2115
# values, like seconds. The current code, while more esoteric, is
2787
2116
# cleaner without depending on a parsing library. If Python had a
2788
2117
# built-in library for parsing we would use it, but we'd like to
2789
2118
# avoid excessive use of external libraries.
2791
2120
# New type for defining tokens, syntax, and semantics all-in-one
2792
Token = collections.namedtuple("Token", (
2793
"regexp", # To match token; if "value" is not None, must have
2794
# a "group" containing digits
2795
"value", # datetime.timedelta or None
2796
"followers")) # Tokens valid after this token
2121
Token = collections.namedtuple("Token",
2122
("regexp", # To match token; if
2123
# "value" is not None,
2124
# must have a "group"
2126
"value", # datetime.timedelta or
2128
"followers")) # Tokens valid after
2797
2130
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2798
2131
# the "duration" ABNF definition in RFC 3339, Appendix A.
2799
2132
token_end = Token(re.compile(r"$"), None, frozenset())
2800
2133
token_second = Token(re.compile(r"(\d+)S"),
2801
2134
datetime.timedelta(seconds=1),
2802
frozenset((token_end, )))
2135
frozenset((token_end,)))
2803
2136
token_minute = Token(re.compile(r"(\d+)M"),
2804
2137
datetime.timedelta(minutes=1),
2805
2138
frozenset((token_second, token_end)))
2964
2294
parser.add_argument("--no-dbus", action="store_false",
2965
2295
dest="use_dbus", help="Do not provide D-Bus"
2966
" system bus interface", default=None)
2296
" system bus interface")
2967
2297
parser.add_argument("--no-ipv6", action="store_false",
2968
dest="use_ipv6", help="Do not use IPv6",
2298
dest="use_ipv6", help="Do not use IPv6")
2970
2299
parser.add_argument("--no-restore", action="store_false",
2971
2300
dest="restore", help="Do not restore stored"
2972
" state", default=None)
2973
2302
parser.add_argument("--socket", type=int,
2974
2303
help="Specify a file descriptor to a network"
2975
2304
" socket to use instead of creating one")
2976
2305
parser.add_argument("--statedir", metavar="DIR",
2977
2306
help="Directory to save/restore state in")
2978
2307
parser.add_argument("--foreground", action="store_true",
2979
help="Run in foreground", default=None)
2980
parser.add_argument("--no-zeroconf", action="store_false",
2981
dest="zeroconf", help="Do not use Zeroconf",
2308
help="Run in foreground")
2984
2310
options = parser.parse_args()
2986
2317
# Default values for config file for server-global settings
2987
if gnutls.has_rawpk:
2988
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2989
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2991
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2992
":+SIGN-DSA-SHA256")
2993
server_defaults = {"interface": "",
2997
"priority": priority,
2998
"servicename": "Mandos",
3004
"statedir": "/var/lib/mandos",
3005
"foreground": "False",
2318
server_defaults = { "interface": "",
2323
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2324
"servicename": "Mandos",
2330
"statedir": "/var/lib/mandos",
2331
"foreground": "False",
3010
2334
# Parse config file for server-global settings
3011
server_config = configparser.ConfigParser(server_defaults)
2335
server_config = configparser.SafeConfigParser(server_defaults)
3012
2336
del server_defaults
3013
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3014
# Convert the ConfigParser object to a dict
2337
server_config.read(os.path.join(options.configdir,
2339
# Convert the SafeConfigParser object to a dict
3015
2340
server_settings = server_config.defaults()
3016
2341
# Use the appropriate methods on the non-string config options
3017
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3018
"foreground", "zeroconf"):
2342
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3019
2343
server_settings[option] = server_config.getboolean("DEFAULT",
3021
2345
if server_settings["port"]:
3137
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3139
2447
except OSError as error:
3140
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3141
.format(uid, gid, os.strerror(error.errno)))
3142
2448
if error.errno != errno.EPERM:
3146
2452
# Enable all possible GnuTLS debugging
3148
2454
# "Use a log level over 10 to enable all debugging options."
3149
2455
# - GnuTLS manual
3150
gnutls.global_set_log_level(11)
2456
gnutls.library.functions.gnutls_global_set_log_level(11)
2458
@gnutls.library.types.gnutls_log_func
3153
2459
def debug_gnutls(level, string):
3154
2460
logger.debug("GnuTLS: %s", string[:-1])
3156
gnutls.global_set_log_function(debug_gnutls)
2462
(gnutls.library.functions
2463
.gnutls_global_set_log_function(debug_gnutls))
3158
2465
# Redirect stdin so all checkers get /dev/null
3159
2466
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3160
2467
os.dup2(null, sys.stdin.fileno())
3164
2471
# Need to fork before connecting to D-Bus
3165
2472
if not foreground:
3166
2473
# Close all input and output, do double fork, etc.
3169
if gi.version_info < (3, 10, 2):
3170
# multiprocessing will use threads, so before we use GLib we
3171
# need to inform GLib that threads will be used.
2476
# multiprocessing will use threads, so before we use gobject we
2477
# need to inform gobject that threads will be used.
2478
gobject.threads_init()
3174
2480
global main_loop
3175
2481
# From the Avahi example code
3176
2482
DBusGMainLoop(set_as_default=True)
3177
main_loop = GLib.MainLoop()
2483
main_loop = gobject.MainLoop()
3178
2484
bus = dbus.SystemBus()
3179
2485
# End of Avahi example code
3182
2488
bus_name = dbus.service.BusName("se.recompile.Mandos",
3185
old_bus_name = dbus.service.BusName(
3186
"se.bsnet.fukt.Mandos", bus,
3188
except dbus.exceptions.DBusException as e:
2489
bus, do_not_queue=True)
2490
old_bus_name = (dbus.service.BusName
2491
("se.bsnet.fukt.Mandos", bus,
2493
except dbus.exceptions.NameExistsException as e:
3189
2494
logger.error("Disabling D-Bus:", exc_info=e)
3190
2495
use_dbus = False
3191
2496
server_settings["use_dbus"] = False
3192
2497
tcp_server.use_dbus = False
3194
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3195
service = AvahiServiceToSyslog(
3196
name=server_settings["servicename"],
3197
servicetype="_mandos._tcp",
3200
if server_settings["interface"]:
3201
service.interface = if_nametoindex(
3202
server_settings["interface"].encode("utf-8"))
2498
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2499
service = AvahiServiceToSyslog(name =
2500
server_settings["servicename"],
2501
servicetype = "_mandos._tcp",
2502
protocol = protocol, bus = bus)
2503
if server_settings["interface"]:
2504
service.interface = (if_nametoindex
2505
(str(server_settings["interface"])))
3204
2507
global multiprocessing_manager
3205
2508
multiprocessing_manager = multiprocessing.Manager()
3207
2510
client_class = Client
3209
client_class = functools.partial(ClientDBus, bus=bus)
2512
client_class = functools.partial(ClientDBus, bus = bus)
3211
2514
client_settings = Client.config_parser(client_config)
3212
2515
old_client_settings = {}
3213
2516
clients_data = {}
3215
# This is used to redirect stdout and stderr for checker processes
3217
wnull = open(os.devnull, "w") # A writable /dev/null
3218
# Only used if server is running in foreground but not in debug
3220
if debug or not foreground:
3223
2518
# Get client data and settings from last running state.
3224
2519
if server_settings["restore"]:
3226
2521
with open(stored_state_path, "rb") as stored_state:
3227
if sys.version_info.major == 2:
3228
clients_data, old_client_settings = pickle.load(
3231
bytes_clients_data, bytes_old_client_settings = (
3232
pickle.load(stored_state, encoding="bytes"))
3233
# Fix bytes to strings
3236
clients_data = {(key.decode("utf-8")
3237
if isinstance(key, bytes)
3240
bytes_clients_data.items()}
3241
del bytes_clients_data
3242
for key in clients_data:
3243
value = {(k.decode("utf-8")
3244
if isinstance(k, bytes) else k): v
3246
clients_data[key].items()}
3247
clients_data[key] = value
3249
value["client_structure"] = [
3251
if isinstance(s, bytes)
3253
value["client_structure"]]
3255
for k in ("name", "host"):
3256
if isinstance(value[k], bytes):
3257
value[k] = value[k].decode("utf-8")
3258
if "key_id" not in value:
3259
value["key_id"] = ""
3260
elif "fingerprint" not in value:
3261
value["fingerprint"] = ""
3262
# old_client_settings
3264
old_client_settings = {
3265
(key.decode("utf-8")
3266
if isinstance(key, bytes)
3269
bytes_old_client_settings.items()}
3270
del bytes_old_client_settings
3272
for value in old_client_settings.values():
3273
if isinstance(value["host"], bytes):
3274
value["host"] = (value["host"]
2522
clients_data, old_client_settings = (pickle.load
3276
2524
os.remove(stored_state_path)
3277
2525
except IOError as e:
3278
2526
if e.errno == errno.ENOENT:
3279
logger.warning("Could not load persistent state:"
3280
" {}".format(os.strerror(e.errno)))
2527
logger.warning("Could not load persistent state: {0}"
2528
.format(os.strerror(e.errno)))
3282
2530
logger.critical("Could not load persistent state:",
3285
2533
except EOFError as e:
3286
2534
logger.warning("Could not load persistent state: "
2535
"EOFError:", exc_info=e)
3290
2537
with PGPEngine() as pgp:
3291
for client_name, client in clients_data.items():
3292
# Skip removed clients
3293
if client_name not in client_settings:
2538
for client_name, client in clients_data.iteritems():
3296
2539
# Decide which value to use after restoring saved state.
3297
2540
# We have three different values: Old config file,
3298
2541
# new config file, and saved state.
3356
2599
for client_name in (set(client_settings)
3357
2600
- set(old_client_settings)):
3358
2601
clients_data[client_name] = client_settings[client_name]
3360
2603
# Create all client objects
3361
for client_name, client in clients_data.items():
2604
for client_name, client in clients_data.iteritems():
3362
2605
tcp_server.clients[client_name] = client_class(
3365
server_settings=server_settings)
2606
name = client_name, settings = client)
3367
2608
if not tcp_server.clients:
3368
2609
logger.warning("No clients defined")
3370
2611
if not foreground:
3371
2612
if pidfile is not None:
3375
print(pid, file=pidfile)
2616
pidfile.write(str(pid) + "\n".encode("utf-8"))
3376
2617
except IOError:
3377
2618
logger.error("Could not write to file %r with PID %d",
3378
2619
pidfilename, pid)
3380
2621
del pidfilename
3382
for termsig in (signal.SIGHUP, signal.SIGTERM):
3383
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3384
lambda: main_loop.quit() and False)
2623
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2624
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3388
@alternate_dbus_interfaces(
3389
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3390
class MandosDBusService(DBusObjectWithObjectManager):
2627
@alternate_dbus_interfaces({"se.recompile.Mandos":
2628
"se.bsnet.fukt.Mandos"})
2629
class MandosDBusService(DBusObjectWithProperties):
3391
2630
"""A D-Bus proxy object"""
3393
2631
def __init__(self):
3394
2632
dbus.service.Object.__init__(self, bus, "/")
3396
2633
_interface = "se.recompile.Mandos"
2635
@dbus_interface_annotations(_interface)
2637
return { "org.freedesktop.DBus.Property"
2638
".EmitsChangedSignal":
3398
2641
@dbus.service.signal(_interface, signature="o")
3399
2642
def ClientAdded(self, objpath):
3403
2646
@dbus.service.signal(_interface, signature="ss")
3404
def ClientNotFound(self, key_id, address):
2647
def ClientNotFound(self, fingerprint, address):
3408
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3410
2651
@dbus.service.signal(_interface, signature="os")
3411
2652
def ClientRemoved(self, objpath, name):
3415
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3417
2656
@dbus.service.method(_interface, out_signature="ao")
3418
2657
def GetAllClients(self):
3420
return dbus.Array(c.dbus_object_path for c in
3421
tcp_server.clients.values())
3423
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2659
return dbus.Array(c.dbus_object_path
2661
tcp_server.clients.itervalues())
3425
2663
@dbus.service.method(_interface,
3426
2664
out_signature="a{oa{sv}}")
3427
2665
def GetAllClientsWithProperties(self):
3429
2667
return dbus.Dictionary(
3430
{c.dbus_object_path: c.GetAll(
3431
"se.recompile.Mandos.Client")
3432
for c in tcp_server.clients.values()},
2668
((c.dbus_object_path, c.GetAll(""))
2669
for c in tcp_server.clients.itervalues()),
3433
2670
signature="oa{sv}")
3435
2672
@dbus.service.method(_interface, in_signature="o")
3436
2673
def RemoveClient(self, object_path):
3438
for c in tcp_server.clients.values():
2675
for c in tcp_server.clients.itervalues():
3439
2676
if c.dbus_object_path == object_path:
3440
2677
del tcp_server.clients[c.name]
3441
2678
c.remove_from_connection()
3442
# Don't signal the disabling
2679
# Don't signal anything except ClientRemoved
3443
2680
c.disable(quiet=True)
3444
# Emit D-Bus signal for removal
3445
self.client_removed_signal(c)
2682
self.ClientRemoved(object_path, c.name)
3447
2684
raise KeyError(object_path)
3451
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3452
out_signature="a{oa{sa{sv}}}")
3453
def GetManagedObjects(self):
3455
return dbus.Dictionary(
3456
{client.dbus_object_path:
3458
{interface: client.GetAll(interface)
3460
client._get_all_interface_names()})
3461
for client in tcp_server.clients.values()})
3463
def client_added_signal(self, client):
3464
"""Send the new standard signal and the old signal"""
3466
# New standard signal
3467
self.InterfacesAdded(
3468
client.dbus_object_path,
3470
{interface: client.GetAll(interface)
3472
client._get_all_interface_names()}))
3474
self.ClientAdded(client.dbus_object_path)
3476
def client_removed_signal(self, client):
3477
"""Send the new standard signal and the old signal"""
3479
# New standard signal
3480
self.InterfacesRemoved(
3481
client.dbus_object_path,
3482
client._get_all_interface_names())
3484
self.ClientRemoved(client.dbus_object_path,
3487
2688
mandos_dbus_service = MandosDBusService()
3489
# Save modules to variables to exempt the modules from being
3490
# unloaded before the function registered with atexit() is run.
3491
mp = multiprocessing
3495
2691
"Cleanup function; run on exit"
3499
mp.active_children()
2694
multiprocessing.active_children()
3501
2695
if not (tcp_server.clients or client_settings):
3504
2698
# Store client before exiting. Secrets are encrypted with key
3505
2699
# based on what config file has. If config file is
3506
2700
# removed/edited, old secret will thus be unrecovable.
3508
2702
with PGPEngine() as pgp:
3509
for client in tcp_server.clients.values():
2703
for client in tcp_server.clients.itervalues():
3510
2704
key = client_settings[client.name]["secret"]
3511
2705
client.encrypted_secret = pgp.encrypt(client.secret,
3513
2707
client_dict = {}
3515
2709
# A list of attributes that can not be pickled
3517
exclude = {"bus", "changedstate", "secret",
3518
"checker", "server_settings"}
3519
for name, typ in inspect.getmembers(dbus.service
2711
exclude = set(("bus", "changedstate", "secret",
2713
for name, typ in (inspect.getmembers
2714
(dbus.service.Object)):
3521
2715
exclude.add(name)
3523
2717
client_dict["encrypted_secret"] = (client
3524
2718
.encrypted_secret)
3525
2719
for attr in client.client_structure:
3526
2720
if attr not in exclude:
3527
2721
client_dict[attr] = getattr(client, attr)
3529
2723
clients[client.name] = client_dict
3530
2724
del client_settings[client.name]["secret"]
3533
with tempfile.NamedTemporaryFile(
3537
dir=os.path.dirname(stored_state_path),
3538
delete=False) as stored_state:
3539
pickle.dump((clients, client_settings), stored_state,
3541
tempname = stored_state.name
2727
with (tempfile.NamedTemporaryFile
2728
(mode='wb', suffix=".pickle", prefix='clients-',
2729
dir=os.path.dirname(stored_state_path),
2730
delete=False)) as stored_state:
2731
pickle.dump((clients, client_settings), stored_state)
2732
tempname=stored_state.name
3542
2733
os.rename(tempname, stored_state_path)
3543
2734
except (IOError, OSError) as e: