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
85
74
import dbus.service
87
from gi.repository import GLib
88
77
from dbus.mainloop.glib import DBusGMainLoop
91
80
import xml.dom.minidom
94
if sys.version_info.major == 2:
98
# Add collections.abc.Callable if it does not exist
100
collections.abc.Callable
101
except AttributeError:
103
Callable = collections.Callable
104
collections.abc = abc
107
# Add shlex.quote if it does not exist
110
except AttributeError:
111
shlex.quote = re.escape
113
# Show warnings by default
114
if not sys.warnoptions:
116
warnings.simplefilter("default")
118
# Try to find the value of SO_BINDTODEVICE:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
122
85
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
123
86
except AttributeError:
125
# This is where SO_BINDTODEVICE was up to and including Python
127
88
from IN import SO_BINDTODEVICE
128
89
except ImportError:
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
141
SO_BINDTODEVICE = None
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
90
SO_BINDTODEVICE = None
147
93
stored_state_file = "clients.pickle"
149
95
logger = logging.getLogger()
150
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")))
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
101
if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
156
104
except (OSError, AttributeError):
158
105
def if_nametoindex(interface):
159
106
"Get an interface index the hard way, i.e. using fcntl()"
160
107
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
161
108
with contextlib.closing(socket.socket()) as s:
162
109
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
110
struct.pack(str("16s16x"),
112
interface_index = struct.unpack(str("I"),
165
114
return interface_index
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
177
return types.FunctionType(func.__code__,
184
117
def initlogger(debug, level=logging.WARNING):
185
118
"""init logger and add loglevel"""
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
191
120
syslogger.setFormatter(logging.Formatter
192
121
('Mandos [%(process)d]: %(levelname)s:'
194
123
logger.addHandler(syslogger)
197
126
console = logging.StreamHandler()
198
127
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
255
172
os.rmdir(self.tempdir)
256
173
self.tempdir = None
258
175
def password_encode(self, password):
259
176
# Passphrase can not be empty and can not contain newlines or
260
177
# NUL bytes. So we prefix it and hex encode it.
261
encoded = b"mandos" + binascii.hexlify(password)
262
if len(encoded) > 2048:
263
# GnuPG can't handle long passwords, so encode differently
264
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
265
.replace(b"\n", b"\\n")
266
.replace(b"\0", b"\\x00"))
178
return b"mandos" + binascii.hexlify(password)
269
180
def encrypt(self, data, password):
270
passphrase = self.password_encode(password)
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
273
passfile.write(passphrase)
275
proc = subprocess.Popen([self.gpg, '--symmetric',
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
283
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
285
195
return ciphertext
287
197
def decrypt(self, data, password):
288
passphrase = self.password_encode(password)
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
291
passfile.write(passphrase)
293
proc = subprocess.Popen([self.gpg, '--decrypt',
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
301
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
303
212
return decrypted_plaintext
306
# Pretend that we have an Avahi module
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
332
215
class AvahiError(Exception):
333
216
def __init__(self, value, *args, **kwargs):
334
217
self.value = value
335
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))
339
222
class AvahiServiceError(AvahiError):
343
225
class AvahiGroupError(AvahiError):
229
class AvahiService(object):
348
230
"""An Avahi (Zeroconf) service.
351
233
interface: integer; avahi.IF_UNSPEC or an interface index.
352
234
Used to optionally bind to the specified interface.
353
235
name: string; Example: 'Mandos'
354
236
type: string; Example: '_mandos._tcp'.
355
See <https://www.iana.org/assignments/service-names-port-numbers>
237
See <http://www.dns-sd.org/ServiceTypes.html>
356
238
port: integer; what port to announce
357
239
TXT: list of strings; TXT record for the service
358
240
domain: string; Domain to publish on, default to .local if empty.
517
377
follow_name_owner_changes=True),
518
378
avahi.DBUS_INTERFACE_SERVER)
519
379
self.server.connect_to_signal("StateChanged",
520
self.server_state_changed)
380
self.server_state_changed)
521
381
self.server_state_changed(self.server.GetState())
524
384
class AvahiServiceToSyslog(AvahiService):
525
def rename(self, *args, **kwargs):
526
386
"""Add the new name to the syslog messages"""
527
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
528
syslogger.setFormatter(logging.Formatter(
529
'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'
534
# Pretend that we have a GnuTLS module
536
"""This isn't so much a class as it is a module-like namespace."""
538
library = ctypes.util.find_library("gnutls")
540
library = ctypes.util.find_library("gnutls-deb0")
541
_library = ctypes.cdll.LoadLibrary(library)
544
# Unless otherwise indicated, the constants and types below are
545
# all from the gnutls/gnutls.h C header file.
556
E_NO_CERTIFICATE_FOUND = -49
561
KEYID_USE_SHA256 = 1 # gnutls/x509.h
562
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
565
class session_int(ctypes.Structure):
567
session_t = ctypes.POINTER(session_int)
569
class certificate_credentials_st(ctypes.Structure):
571
certificate_credentials_t = ctypes.POINTER(
572
certificate_credentials_st)
573
certificate_type_t = ctypes.c_int
575
class datum_t(ctypes.Structure):
576
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
577
('size', ctypes.c_uint)]
579
class openpgp_crt_int(ctypes.Structure):
581
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
582
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
583
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
584
credentials_type_t = ctypes.c_int
585
transport_ptr_t = ctypes.c_void_p
586
close_request_t = ctypes.c_int
589
class Error(Exception):
590
def __init__(self, message=None, code=None, args=()):
591
# Default usage is by a message string, but if a return
592
# code is passed, convert it to a string with
595
if message is None and code is not None:
596
message = gnutls.strerror(code)
597
return super(gnutls.Error, self).__init__(
600
class CertificateSecurityError(Error):
606
self._c_object = gnutls.certificate_credentials_t()
607
gnutls.certificate_allocate_credentials(
608
ctypes.byref(self._c_object))
609
self.type = gnutls.CRD_CERTIFICATE
612
gnutls.certificate_free_credentials(self._c_object)
615
def __init__(self, socket, credentials=None):
616
self._c_object = gnutls.session_t()
617
gnutls_flags = gnutls.CLIENT
618
if gnutls.check_version(b"3.5.6"):
619
gnutls_flags |= gnutls.NO_TICKETS
621
gnutls_flags |= gnutls.ENABLE_RAWPK
622
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
624
gnutls.set_default_priority(self._c_object)
625
gnutls.transport_set_ptr(self._c_object, socket.fileno())
626
gnutls.handshake_set_private_extensions(self._c_object,
629
if credentials is None:
630
credentials = gnutls.Credentials()
631
gnutls.credentials_set(self._c_object, credentials.type,
632
ctypes.cast(credentials._c_object,
634
self.credentials = credentials
637
gnutls.deinit(self._c_object)
640
return gnutls.handshake(self._c_object)
642
def send(self, data):
646
data_len -= gnutls.record_send(self._c_object,
651
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
653
# Error handling functions
654
def _error_code(result):
655
"""A function to raise exceptions on errors, suitable
656
for the 'restype' attribute on ctypes functions"""
659
if result == gnutls.E_NO_CERTIFICATE_FOUND:
660
raise gnutls.CertificateSecurityError(code=result)
661
raise gnutls.Error(code=result)
663
def _retry_on_error(result, func, arguments):
664
"""A function to retry on some errors, suitable
665
for the 'errcheck' attribute on ctypes functions"""
667
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
668
return _error_code(result)
669
result = func(*arguments)
672
# Unless otherwise indicated, the function declarations below are
673
# all from the gnutls/gnutls.h C header file.
676
priority_set_direct = _library.gnutls_priority_set_direct
677
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
678
ctypes.POINTER(ctypes.c_char_p)]
679
priority_set_direct.restype = _error_code
681
init = _library.gnutls_init
682
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
683
init.restype = _error_code
685
set_default_priority = _library.gnutls_set_default_priority
686
set_default_priority.argtypes = [session_t]
687
set_default_priority.restype = _error_code
689
record_send = _library.gnutls_record_send
690
record_send.argtypes = [session_t, ctypes.c_void_p,
692
record_send.restype = ctypes.c_ssize_t
693
record_send.errcheck = _retry_on_error
695
certificate_allocate_credentials = (
696
_library.gnutls_certificate_allocate_credentials)
697
certificate_allocate_credentials.argtypes = [
698
ctypes.POINTER(certificate_credentials_t)]
699
certificate_allocate_credentials.restype = _error_code
701
certificate_free_credentials = (
702
_library.gnutls_certificate_free_credentials)
703
certificate_free_credentials.argtypes = [
704
certificate_credentials_t]
705
certificate_free_credentials.restype = None
707
handshake_set_private_extensions = (
708
_library.gnutls_handshake_set_private_extensions)
709
handshake_set_private_extensions.argtypes = [session_t,
711
handshake_set_private_extensions.restype = None
713
credentials_set = _library.gnutls_credentials_set
714
credentials_set.argtypes = [session_t, credentials_type_t,
716
credentials_set.restype = _error_code
718
strerror = _library.gnutls_strerror
719
strerror.argtypes = [ctypes.c_int]
720
strerror.restype = ctypes.c_char_p
722
certificate_type_get = _library.gnutls_certificate_type_get
723
certificate_type_get.argtypes = [session_t]
724
certificate_type_get.restype = _error_code
726
certificate_get_peers = _library.gnutls_certificate_get_peers
727
certificate_get_peers.argtypes = [session_t,
728
ctypes.POINTER(ctypes.c_uint)]
729
certificate_get_peers.restype = ctypes.POINTER(datum_t)
731
global_set_log_level = _library.gnutls_global_set_log_level
732
global_set_log_level.argtypes = [ctypes.c_int]
733
global_set_log_level.restype = None
735
global_set_log_function = _library.gnutls_global_set_log_function
736
global_set_log_function.argtypes = [log_func]
737
global_set_log_function.restype = None
739
deinit = _library.gnutls_deinit
740
deinit.argtypes = [session_t]
741
deinit.restype = None
743
handshake = _library.gnutls_handshake
744
handshake.argtypes = [session_t]
745
handshake.restype = _error_code
746
handshake.errcheck = _retry_on_error
748
transport_set_ptr = _library.gnutls_transport_set_ptr
749
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
750
transport_set_ptr.restype = None
752
bye = _library.gnutls_bye
753
bye.argtypes = [session_t, close_request_t]
754
bye.restype = _error_code
755
bye.errcheck = _retry_on_error
757
check_version = _library.gnutls_check_version
758
check_version.argtypes = [ctypes.c_char_p]
759
check_version.restype = ctypes.c_char_p
761
_need_version = b"3.3.0"
762
if check_version(_need_version) is None:
763
raise self.Error("Needs GnuTLS {} or later"
764
.format(_need_version))
766
_tls_rawpk_version = b"3.6.6"
767
has_rawpk = bool(check_version(_tls_rawpk_version))
771
class pubkey_st(ctypes.Structure):
773
pubkey_t = ctypes.POINTER(pubkey_st)
775
x509_crt_fmt_t = ctypes.c_int
777
# All the function declarations below are from gnutls/abstract.h
778
pubkey_init = _library.gnutls_pubkey_init
779
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
780
pubkey_init.restype = _error_code
782
pubkey_import = _library.gnutls_pubkey_import
783
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
785
pubkey_import.restype = _error_code
787
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
788
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
789
ctypes.POINTER(ctypes.c_ubyte),
790
ctypes.POINTER(ctypes.c_size_t)]
791
pubkey_get_key_id.restype = _error_code
793
pubkey_deinit = _library.gnutls_pubkey_deinit
794
pubkey_deinit.argtypes = [pubkey_t]
795
pubkey_deinit.restype = None
797
# All the function declarations below are from gnutls/openpgp.h
799
openpgp_crt_init = _library.gnutls_openpgp_crt_init
800
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
801
openpgp_crt_init.restype = _error_code
803
openpgp_crt_import = _library.gnutls_openpgp_crt_import
804
openpgp_crt_import.argtypes = [openpgp_crt_t,
805
ctypes.POINTER(datum_t),
807
openpgp_crt_import.restype = _error_code
809
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
810
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
811
ctypes.POINTER(ctypes.c_uint)]
812
openpgp_crt_verify_self.restype = _error_code
814
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
815
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
816
openpgp_crt_deinit.restype = None
818
openpgp_crt_get_fingerprint = (
819
_library.gnutls_openpgp_crt_get_fingerprint)
820
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
824
openpgp_crt_get_fingerprint.restype = _error_code
826
if check_version(b"3.6.4"):
827
certificate_type_get2 = _library.gnutls_certificate_type_get2
828
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
829
certificate_type_get2.restype = _error_code
831
# Remove non-public functions
832
del _error_code, _retry_on_error
835
def call_pipe(connection, # : multiprocessing.Connection
836
func, *args, **kwargs):
837
"""This function is meant to be called by multiprocessing.Process
839
This function runs func(*args, **kwargs), and writes the resulting
840
return value on the provided multiprocessing.Connection.
842
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):
847
403
"""A representation of a client host served by this server.
850
406
approved: bool(); 'None' if not yet approved/disapproved
851
407
approval_delay: datetime.timedelta(); Time to wait for approval
852
408
approval_duration: datetime.timedelta(); Duration of one approval
853
checker: multiprocessing.Process(); a running checker process used
854
to see if the client lives. 'None' if no process is
856
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
857
413
checker_command: string; External command which is run to check
858
414
if client lives. %() expansions are done at
859
415
runtime with vars(self) as dict, so that for
860
416
instance %(name)s can be used in the command.
861
checker_initiator_tag: a GLib event source tag, or None
417
checker_initiator_tag: a gobject event source tag, or None
862
418
created: datetime.datetime(); (UTC) object creation
863
419
client_structure: Object describing what attributes a client has
864
420
and is used for storing the client at exit
865
421
current_checker_command: string; current running checker_command
866
disable_initiator_tag: a GLib event source tag, or None
422
disable_initiator_tag: a gobject event source tag, or None
868
424
fingerprint: string (40 or 32 hexadecimal digits); used to
869
uniquely identify an OpenPGP client
870
key_id: string (64 hexadecimal digits); used to uniquely identify
871
a client using raw public keys
425
uniquely identify the client
872
426
host: string; available for use by the checker command
873
427
interval: datetime.timedelta(); How often to start a new checker
874
428
last_approval_request: datetime.datetime(); (UTC) or None
1031
591
logger.info("Disabling client %s", self.name)
1032
592
if getattr(self, "disable_initiator_tag", None) is not None:
1033
GLib.source_remove(self.disable_initiator_tag)
593
gobject.source_remove(self.disable_initiator_tag)
1034
594
self.disable_initiator_tag = None
1035
595
self.expires = None
1036
596
if getattr(self, "checker_initiator_tag", None) is not None:
1037
GLib.source_remove(self.checker_initiator_tag)
597
gobject.source_remove(self.checker_initiator_tag)
1038
598
self.checker_initiator_tag = None
1039
599
self.stop_checker()
1040
600
self.enabled = False
1042
602
self.send_changedstate()
1043
# 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
1046
606
def __del__(self):
1049
609
def init_checker(self):
1050
610
# Schedule a new checker to be started an 'interval' from now,
1051
611
# and every interval from then on.
1052
612
if self.checker_initiator_tag is not None:
1053
GLib.source_remove(self.checker_initiator_tag)
1054
self.checker_initiator_tag = GLib.timeout_add(
1055
random.randrange(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(),
1058
617
# Schedule a disable() when 'timeout' has passed
1059
618
if self.disable_initiator_tag is not None:
1060
GLib.source_remove(self.disable_initiator_tag)
1061
self.disable_initiator_tag = GLib.timeout_add(
1062
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(),
1063
623
# Also start a new checker *right now*.
1064
624
self.start_checker()
1066
def checker_callback(self, source, condition, connection,
626
def checker_callback(self, pid, condition, command):
1068
627
"""The checker has completed, so take appropriate actions."""
1069
# Read return code from connection (see call_pipe)
1070
returncode = connection.recv()
1072
if self.checker is not None:
1074
628
self.checker_callback_tag = None
1075
629
self.checker = None
1078
self.last_checker_status = returncode
1079
self.last_checker_signal = None
630
if os.WIFEXITED(condition):
631
self.last_checker_status = os.WEXITSTATUS(condition)
1080
632
if self.last_checker_status == 0:
1081
633
logger.info("Checker for %(name)s succeeded",
1083
635
self.checked_ok()
1085
logger.info("Checker for %(name)s failed", vars(self))
637
logger.info("Checker for %(name)s failed",
1087
640
self.last_checker_status = -1
1088
self.last_checker_signal = -returncode
1089
641
logger.warning("Checker for %(name)s crashed?",
1093
644
def checked_ok(self):
1094
645
"""Assert that the client has been seen, alive and well."""
1095
646
self.last_checked_ok = datetime.datetime.utcnow()
1096
647
self.last_checker_status = 0
1097
self.last_checker_signal = None
1098
648
self.bump_timeout()
1100
650
def bump_timeout(self, timeout=None):
1101
651
"""Bump up the timeout for this client."""
1102
652
if timeout is None:
1103
653
timeout = self.timeout
1104
654
if self.disable_initiator_tag is not None:
1105
GLib.source_remove(self.disable_initiator_tag)
655
gobject.source_remove(self.disable_initiator_tag)
1106
656
self.disable_initiator_tag = None
1107
657
if getattr(self, "enabled", False):
1108
self.disable_initiator_tag = GLib.timeout_add(
1109
int(timeout.total_seconds() * 1000), self.disable)
658
self.disable_initiator_tag = (gobject.timeout_add
659
(timedelta_to_milliseconds
660
(timeout), self.disable))
1110
661
self.expires = datetime.datetime.utcnow() + timeout
1112
663
def need_approval(self):
1113
664
self.last_approval_request = datetime.datetime.utcnow()
1115
666
def start_checker(self):
1116
667
"""Start a new checker subprocess if one is not running.
1118
669
If a checker already exists, leave it running and do
1120
671
# The reason for not killing a running checker is that if we
1125
676
# checkers alone, the checker would have to take more time
1126
677
# than 'timeout' for the client to be disabled, which is as it
1129
if self.checker is not None and not self.checker.is_alive():
1130
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)
1133
693
# Start a new checker if needed
1134
694
if self.checker is None:
1135
695
# Escape attributes for the shell
1137
attr: shlex.quote(str(getattr(self, attr)))
1138
for attr in self.runtime_expansions}
696
escaped_attrs = dict(
697
(attr, re.escape(unicode(getattr(self, attr))))
699
self.runtime_expansions)
1140
701
command = self.checker_command % escaped_attrs
1141
702
except TypeError as error:
1142
703
logger.error('Could not format string "%s"',
1143
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",
1145
return True # Try again later
1146
self.current_checker_command = command
1147
logger.info("Starting checker %r for %s", command,
1149
# We don't need to redirect stdout and stderr, since
1150
# in normal mode, that is already done by daemon(),
1151
# and in debug mode we don't want to. (Stdin is
1152
# always replaced by /dev/null.)
1153
# The exception is when not debugging but nevertheless
1154
# running in the foreground; use the previously
1156
popen_args = {"close_fds": True,
1159
if (not self.server_settings["debug"]
1160
and self.server_settings["foreground"]):
1161
popen_args.update({"stdout": wnull,
1163
pipe = multiprocessing.Pipe(duplex=False)
1164
self.checker = multiprocessing.Process(
1166
args=(pipe[1], subprocess.call, command),
1168
self.checker.start()
1169
self.checker_callback_tag = GLib.io_add_watch(
1170
GLib.IOChannel.unix_new(pipe[0].fileno()),
1171
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1172
self.checker_callback, pipe[0], command)
1173
# 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
1176
733
def stop_checker(self):
1177
734
"""Force the checker process, if any, to stop."""
1178
735
if self.checker_callback_tag:
1179
GLib.source_remove(self.checker_callback_tag)
736
gobject.source_remove(self.checker_callback_tag)
1180
737
self.checker_callback_tag = None
1181
738
if getattr(self, "checker", None) is None:
1183
740
logger.debug("Stopping checker for %(name)s", vars(self))
1184
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
1185
749
self.checker = None
1188
def dbus_service_property(dbus_interface,
752
def dbus_service_property(dbus_interface, signature="v",
753
access="readwrite", byte_arrays=False):
1192
754
"""Decorators for marking methods of a DBusObjectWithProperties to
1193
755
become properties on the D-Bus.
1195
757
The decorated method will be called with no arguments by "Get"
1196
758
and with one argument by "Set".
1198
760
The parameters, where they are supported, are the same as
1199
761
dbus.service.method, except there is only "signature", since the
1200
762
type from Get() and the type sent to Set() is the same.
1283
class DBusObjectWithAnnotations(dbus.service.Object):
1284
"""A D-Bus object with annotations.
1286
Classes inheriting from this can use the dbus_annotations
1287
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.
1291
847
def _is_dbus_thing(thing):
1292
848
"""Returns a function testing if an attribute is a D-Bus thing
1294
850
If called like _is_dbus_thing("method") it returns a function
1295
851
suitable for use as predicate to inspect.getmembers().
1297
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
853
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1300
856
def _get_all_dbus_things(self, thing):
1301
857
"""Returns a generator of (name, attribute) pairs
1303
return ((getattr(athing.__get__(self), "_dbus_name", name),
859
return ((getattr(athing.__get__(self), "_dbus_name",
1304
861
athing.__get__(self))
1305
862
for cls in self.__class__.__mro__
1306
863
for name, athing in
1307
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1309
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1311
path_keyword='object_path',
1312
connection_keyword='connection')
1313
def Introspect(self, object_path, connection):
1314
"""Overloading of standard D-Bus method.
1316
Inserts annotation tags on methods and signals.
1318
xmlstring = dbus.service.Object.Introspect(self, object_path,
1321
document = xml.dom.minidom.parseString(xmlstring)
1323
for if_tag in document.getElementsByTagName("interface"):
1324
# Add annotation tags
1325
for typ in ("method", "signal"):
1326
for tag in if_tag.getElementsByTagName(typ):
1328
for name, prop in (self.
1329
_get_all_dbus_things(typ)):
1330
if (name == tag.getAttribute("name")
1331
and prop._dbus_interface
1332
== if_tag.getAttribute("name")):
1333
annots.update(getattr(
1334
prop, "_dbus_annotations", {}))
1335
for name, value in annots.items():
1336
ann_tag = document.createElement(
1338
ann_tag.setAttribute("name", name)
1339
ann_tag.setAttribute("value", value)
1340
tag.appendChild(ann_tag)
1341
# Add interface annotation tags
1342
for annotation, value in dict(
1343
itertools.chain.from_iterable(
1344
annotations().items()
1345
for name, annotations
1346
in self._get_all_dbus_things("interface")
1347
if name == if_tag.getAttribute("name")
1349
ann_tag = document.createElement("annotation")
1350
ann_tag.setAttribute("name", annotation)
1351
ann_tag.setAttribute("value", value)
1352
if_tag.appendChild(ann_tag)
1353
# Fix argument name for the Introspect method itself
1354
if (if_tag.getAttribute("name")
1355
== dbus.INTROSPECTABLE_IFACE):
1356
for cn in if_tag.getElementsByTagName("method"):
1357
if cn.getAttribute("name") == "Introspect":
1358
for arg in cn.getElementsByTagName("arg"):
1359
if (arg.getAttribute("direction")
1361
arg.setAttribute("name",
1363
xmlstring = document.toxml("utf-8")
1365
except (AttributeError, xml.dom.DOMException,
1366
xml.parsers.expat.ExpatError) as error:
1367
logger.error("Failed to override Introspection method",
1372
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1373
"""A D-Bus object with properties.
1375
Classes inheriting from this can use the dbus_service_property
1376
decorator to expose methods as D-Bus properties. It exposes the
1377
standard Get(), Set(), and GetAll() methods on the D-Bus.
864
inspect.getmembers(cls,
865
self._is_dbus_thing(thing)))
1380
867
def _get_dbus_property(self, interface_name, property_name):
1381
868
"""Returns a bound method if one exists which is a D-Bus
1382
869
property with the specified name and interface.
1384
for cls in self.__class__.__mro__:
1385
for name, value in inspect.getmembers(
1386
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"))):
1387
875
if (value._dbus_name == property_name
1388
876
and value._dbus_interface == interface_name):
1389
877
return value.__get__(self)
1391
879
# No such property
1392
raise DBusPropertyNotFound("{}:{}.{}".format(
1393
self.dbus_object_path, interface_name, property_name))
1396
def _get_all_interface_names(cls):
1397
"""Get a sequence of all interfaces supported by an object"""
1398
return (name for name in set(getattr(getattr(x, attr),
1399
"_dbus_interface", None)
1400
for x in (inspect.getmro(cls))
1402
if name is not None)
1404
@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",
1406
885
out_signature="v")
1407
886
def Get(self, interface_name, property_name):
1408
887
"""Standard D-Bus property Get() method, see D-Bus standard.
1536
1017
return xmlstring
1540
dbus.OBJECT_MANAGER_IFACE
1541
except AttributeError:
1542
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1545
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1546
"""A D-Bus object with an ObjectManager.
1548
Classes inheriting from this exposes the standard
1549
GetManagedObjects call and the InterfacesAdded and
1550
InterfacesRemoved signals on the standard
1551
"org.freedesktop.DBus.ObjectManager" interface.
1553
Note: No signals are sent automatically; they must be sent
1556
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1557
out_signature="a{oa{sa{sv}}}")
1558
def GetManagedObjects(self):
1559
"""This function must be overridden"""
1560
raise NotImplementedError()
1562
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1563
signature="oa{sa{sv}}")
1564
def InterfacesAdded(self, object_path, interfaces_and_properties):
1567
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1568
def InterfacesRemoved(self, object_path, interfaces):
1571
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1573
path_keyword='object_path',
1574
connection_keyword='connection')
1575
def Introspect(self, object_path, connection):
1576
"""Overloading of standard D-Bus method.
1578
Override return argument name of GetManagedObjects to be
1579
"objpath_interfaces_and_properties"
1581
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1585
document = xml.dom.minidom.parseString(xmlstring)
1587
for if_tag in document.getElementsByTagName("interface"):
1588
# Fix argument name for the GetManagedObjects method
1589
if (if_tag.getAttribute("name")
1590
== dbus.OBJECT_MANAGER_IFACE):
1591
for cn in if_tag.getElementsByTagName("method"):
1592
if (cn.getAttribute("name")
1593
== "GetManagedObjects"):
1594
for arg in cn.getElementsByTagName("arg"):
1595
if (arg.getAttribute("direction")
1599
"objpath_interfaces"
1601
xmlstring = document.toxml("utf-8")
1603
except (AttributeError, xml.dom.DOMException,
1604
xml.parsers.expat.ExpatError) as error:
1605
logger.error("Failed to override Introspection method",
1610
1020
def datetime_to_dbus(dt, variant_level=0):
1611
1021
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1613
return dbus.String("", variant_level=variant_level)
1614
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)
1617
1028
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1978
1381
server to mandos-client
1982
1385
# Rejected - signal
1983
1386
@dbus.service.signal(_interface, signature="s")
1984
1387
def Rejected(self, reason):
1988
1391
# NeedApproval - signal
1989
1392
@dbus.service.signal(_interface, signature="tb")
1990
1393
def NeedApproval(self, timeout, default):
1992
1395
return self.need_approval()
1996
1399
# Approve - method
1997
1400
@dbus.service.method(_interface, in_signature="b")
1998
1401
def Approve(self, value):
1999
1402
self.approve(value)
2001
1404
# CheckedOK - method
2002
1405
@dbus.service.method(_interface)
2003
1406
def CheckedOK(self):
2004
1407
self.checked_ok()
2006
1409
# Enable - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2008
1410
@dbus.service.method(_interface)
2009
1411
def Enable(self):
2013
1415
# StartChecker - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2015
1416
@dbus.service.method(_interface)
2016
1417
def StartChecker(self):
2018
1419
self.start_checker()
2020
1421
# Disable - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2022
1422
@dbus.service.method(_interface)
2023
1423
def Disable(self):
2027
1427
# StopChecker - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2029
1428
@dbus.service.method(_interface)
2030
1429
def StopChecker(self):
2031
1430
self.stop_checker()
2035
1434
# ApprovalPending - property
2036
1435
@dbus_service_property(_interface, signature="b", access="read")
2037
1436
def ApprovalPending_dbus_property(self):
2038
1437
return dbus.Boolean(bool(self.approvals_pending))
2040
1439
# ApprovedByDefault - property
2041
@dbus_service_property(_interface,
1440
@dbus_service_property(_interface, signature="b",
2043
1441
access="readwrite")
2044
1442
def ApprovedByDefault_dbus_property(self, value=None):
2045
1443
if value is None: # get
2046
1444
return dbus.Boolean(self.approved_by_default)
2047
1445
self.approved_by_default = bool(value)
2049
1447
# ApprovalDelay - property
2050
@dbus_service_property(_interface,
1448
@dbus_service_property(_interface, signature="t",
2052
1449
access="readwrite")
2053
1450
def ApprovalDelay_dbus_property(self, value=None):
2054
1451
if value is None: # get
2055
return dbus.UInt64(self.approval_delay.total_seconds()
1452
return dbus.UInt64(self.approval_delay_milliseconds())
2057
1453
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2059
1455
# ApprovalDuration - property
2060
@dbus_service_property(_interface,
1456
@dbus_service_property(_interface, signature="t",
2062
1457
access="readwrite")
2063
1458
def ApprovalDuration_dbus_property(self, value=None):
2064
1459
if value is None: # get
2065
return dbus.UInt64(self.approval_duration.total_seconds()
1460
return dbus.UInt64(timedelta_to_milliseconds(
1461
self.approval_duration))
2067
1462
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2069
1464
# Name - property
2071
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2072
1465
@dbus_service_property(_interface, signature="s", access="read")
2073
1466
def Name_dbus_property(self):
2074
1467
return dbus.String(self.name)
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2079
@dbus_service_property(_interface, signature="s", access="read")
2080
def KeyID_dbus_property(self):
2081
return dbus.String(self.key_id)
2083
1469
# Fingerprint - property
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
1470
@dbus_service_property(_interface, signature="s", access="read")
2087
1471
def Fingerprint_dbus_property(self):
2088
1472
return dbus.String(self.fingerprint)
2090
1474
# Host - property
2091
@dbus_service_property(_interface,
1475
@dbus_service_property(_interface, signature="s",
2093
1476
access="readwrite")
2094
1477
def Host_dbus_property(self, value=None):
2095
1478
if value is None: # get
2096
1479
return dbus.String(self.host)
2097
self.host = str(value)
1480
self.host = unicode(value)
2099
1482
# Created - property
2101
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2102
1483
@dbus_service_property(_interface, signature="s", access="read")
2103
1484
def Created_dbus_property(self):
2104
1485
return datetime_to_dbus(self.created)
2106
1487
# LastEnabled - property
2107
1488
@dbus_service_property(_interface, signature="s", access="read")
2108
1489
def LastEnabled_dbus_property(self):
2109
1490
return datetime_to_dbus(self.last_enabled)
2111
1492
# Enabled - property
2112
@dbus_service_property(_interface,
1493
@dbus_service_property(_interface, signature="b",
2114
1494
access="readwrite")
2115
1495
def Enabled_dbus_property(self, value=None):
2116
1496
if value is None: # get
2165
1544
if (getattr(self, "disable_initiator_tag", None)
2168
GLib.source_remove(self.disable_initiator_tag)
2169
self.disable_initiator_tag = GLib.timeout_add(
2170
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),
2173
1553
# ExtendedTimeout - property
2174
@dbus_service_property(_interface,
1554
@dbus_service_property(_interface, signature="t",
2176
1555
access="readwrite")
2177
1556
def ExtendedTimeout_dbus_property(self, value=None):
2178
1557
if value is None: # get
2179
return dbus.UInt64(self.extended_timeout.total_seconds()
1558
return dbus.UInt64(self.extended_timeout_milliseconds())
2181
1559
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2183
1561
# Interval - property
2184
@dbus_service_property(_interface,
1562
@dbus_service_property(_interface, signature="t",
2186
1563
access="readwrite")
2187
1564
def Interval_dbus_property(self, value=None):
2188
1565
if value is None: # get
2189
return dbus.UInt64(self.interval.total_seconds() * 1000)
1566
return dbus.UInt64(self.interval_milliseconds())
2190
1567
self.interval = datetime.timedelta(0, 0, 0, value)
2191
1568
if getattr(self, "checker_initiator_tag", None) is None:
2193
1570
if self.enabled:
2194
1571
# Reschedule checker run
2195
GLib.source_remove(self.checker_initiator_tag)
2196
self.checker_initiator_tag = GLib.timeout_add(
2197
value, self.start_checker)
2198
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
2200
1577
# Checker - property
2201
@dbus_service_property(_interface,
1578
@dbus_service_property(_interface, signature="s",
2203
1579
access="readwrite")
2204
1580
def Checker_dbus_property(self, value=None):
2205
1581
if value is None: # get
2206
1582
return dbus.String(self.checker_command)
2207
self.checker_command = str(value)
1583
self.checker_command = unicode(value)
2209
1585
# CheckerRunning - property
2210
@dbus_service_property(_interface,
1586
@dbus_service_property(_interface, signature="b",
2212
1587
access="readwrite")
2213
1588
def CheckerRunning_dbus_property(self, value=None):
2214
1589
if value is None: # get
2271
1636
class ClientHandler(socketserver.BaseRequestHandler, object):
2272
1637
"""A class to handle client connections.
2274
1639
Instantiated once for each connection to handle it.
2275
1640
Note: This will run in its own forked process."""
2277
1642
def handle(self):
2278
1643
with contextlib.closing(self.server.child_pipe) as child_pipe:
2279
1644
logger.info("TCP connection from: %s",
2280
str(self.client_address))
1645
unicode(self.client_address))
2281
1646
logger.debug("Pipe FD: %d",
2282
1647
self.server.child_pipe.fileno())
2284
session = gnutls.ClientSession(self.request)
2286
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2287
# "+AES-256-CBC", "+SHA1",
2288
# "+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",
2290
1663
# Use a fallback default, since this MUST be set.
2291
1664
priority = self.server.gnutls_priority
2292
1665
if priority is None:
2293
1666
priority = "NORMAL"
2294
gnutls.priority_set_direct(session._c_object,
2295
priority.encode("utf-8"),
1667
(gnutls.library.functions
1668
.gnutls_priority_set_direct(session._c_object,
2298
1671
# Start communication using the Mandos protocol
2299
1672
# Get protocol number
2300
1673
line = self.request.makefile().readline()
2301
1674
logger.debug("Protocol version: %r", line)
2303
1676
if int(line.strip().split()[0]) > 1:
2304
raise RuntimeError(line)
2305
1678
except (ValueError, IndexError, RuntimeError) as error:
2306
1679
logger.error("Unknown protocol version: %s", error)
2309
1682
# Start GnuTLS connection
2311
1684
session.handshake()
2312
except gnutls.Error as error:
1685
except gnutls.errors.GNUTLSError as error:
2313
1686
logger.warning("Handshake failed: %s", error)
2314
1687
# Do not run session.bye() here: the session is not
2315
1688
# established. Just abandon the request.
2317
1690
logger.debug("Handshake succeeded")
2319
1692
approval_required = False
2321
if gnutls.has_rawpk:
2324
key_id = self.key_id(
2325
self.peer_certificate(session))
2326
except (TypeError, gnutls.Error) as error:
2327
logger.warning("Bad certificate: %s", error)
2329
logger.debug("Key ID: %s", key_id)
2334
fpr = self.fingerprint(
2335
self.peer_certificate(session))
2336
except (TypeError, gnutls.Error) as error:
2337
logger.warning("Bad certificate: %s", error)
2339
logger.debug("Fingerprint: %s", fpr)
2342
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,
2343
1705
self.client_address)
2344
1706
except KeyError:
2347
1709
if client.approval_delay:
2348
1710
delay = client.approval_delay
2349
1711
client.approvals_pending += 1
2350
1712
approval_required = True
2353
1715
if not client.enabled:
2354
1716
logger.info("Client %s is disabled",
2356
1718
if self.server.use_dbus:
2357
1719
# Emit D-Bus signal
2358
1720
client.Rejected("Disabled")
2361
1723
if client.approved or not client.approval_delay:
2362
# We are approved or approval is disabled
1724
#We are approved or approval is disabled
2364
1726
elif client.approved is None:
2365
1727
logger.info("Client %s needs approval",
2398
1762
delay -= time2 - time
2401
session.send(client.secret)
2402
except gnutls.Error as error:
2403
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))
2407
1777
logger.info("Sending secret to %s", client.name)
2408
1778
# bump the timeout using extended_timeout
2409
1779
client.bump_timeout(client.extended_timeout)
2410
1780
if self.server.use_dbus:
2411
1781
# Emit D-Bus signal
2412
1782
client.GotSecret()
2415
1785
if approval_required:
2416
1786
client.approvals_pending -= 1
2419
except gnutls.Error as error:
1789
except gnutls.errors.GNUTLSError as error:
2420
1790
logger.warning("GnuTLS bye failed",
2421
1791
exc_info=error)
2424
1794
def peer_certificate(session):
2425
"Return the peer's certificate as a bytestring"
2427
cert_type = gnutls.certificate_type_get2(session._c_object,
2429
except AttributeError:
2430
cert_type = gnutls.certificate_type_get(session._c_object)
2431
if gnutls.has_rawpk:
2432
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2434
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2435
# If not a valid certificate type...
2436
if cert_type not in valid_cert_types:
2437
logger.info("Cert type %r not in %r", cert_type,
2439
# ...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
2441
1802
list_size = ctypes.c_uint(1)
2442
cert_list = (gnutls.certificate_get_peers
1803
cert_list = (gnutls.library.functions
1804
.gnutls_certificate_get_peers
2443
1805
(session._c_object, ctypes.byref(list_size)))
2444
1806
if not bool(cert_list) and list_size.value != 0:
2445
raise gnutls.Error("error getting peer certificate")
1807
raise gnutls.errors.GNUTLSError("error getting peer"
2446
1809
if list_size.value == 0:
2448
1811
cert = cert_list[0]
2449
1812
return ctypes.string_at(cert.data, cert.size)
2452
def key_id(certificate):
2453
"Convert a certificate bytestring to a hexdigit key ID"
2454
# New GnuTLS "datum" with the public key
2455
datum = gnutls.datum_t(
2456
ctypes.cast(ctypes.c_char_p(certificate),
2457
ctypes.POINTER(ctypes.c_ubyte)),
2458
ctypes.c_uint(len(certificate)))
2459
# XXX all these need to be created in the gnutls "module"
2460
# New empty GnuTLS certificate
2461
pubkey = gnutls.pubkey_t()
2462
gnutls.pubkey_init(ctypes.byref(pubkey))
2463
# Import the raw public key into the certificate
2464
gnutls.pubkey_import(pubkey,
2465
ctypes.byref(datum),
2466
gnutls.X509_FMT_DER)
2467
# New buffer for the key ID
2468
buf = ctypes.create_string_buffer(32)
2469
buf_len = ctypes.c_size_t(len(buf))
2470
# Get the key ID from the raw public key into the buffer
2471
gnutls.pubkey_get_key_id(pubkey,
2472
gnutls.KEYID_USE_SHA256,
2473
ctypes.cast(ctypes.byref(buf),
2474
ctypes.POINTER(ctypes.c_ubyte)),
2475
ctypes.byref(buf_len))
2476
# Deinit the certificate
2477
gnutls.pubkey_deinit(pubkey)
2479
# Convert the buffer to a Python bytestring
2480
key_id = ctypes.string_at(buf, buf_len.value)
2481
# Convert the bytestring to hexadecimal notation
2482
hex_key_id = binascii.hexlify(key_id).upper()
2486
1815
def fingerprint(openpgp):
2487
1816
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2488
1817
# New GnuTLS "datum" with the OpenPGP public key
2489
datum = gnutls.datum_t(
2490
ctypes.cast(ctypes.c_char_p(openpgp),
2491
ctypes.POINTER(ctypes.c_ubyte)),
2492
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))))
2493
1823
# New empty GnuTLS certificate
2494
crt = gnutls.openpgp_crt_t()
2495
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)))
2496
1827
# Import the OpenPGP public key into the certificate
2497
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2498
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))
2499
1832
# Verify the self signature in the key
2500
1833
crtverify = ctypes.c_uint()
2501
gnutls.openpgp_crt_verify_self(crt, 0,
2502
ctypes.byref(crtverify))
1834
(gnutls.library.functions
1835
.gnutls_openpgp_crt_verify_self(crt, 0,
1836
ctypes.byref(crtverify)))
2503
1837
if crtverify.value != 0:
2504
gnutls.openpgp_crt_deinit(crt)
2505
raise gnutls.CertificateSecurityError(code
1838
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1839
raise (gnutls.errors.CertificateSecurityError
2507
1841
# New buffer for the fingerprint
2508
1842
buf = ctypes.create_string_buffer(20)
2509
1843
buf_len = ctypes.c_size_t()
2510
1844
# Get the fingerprint from the certificate into the buffer
2511
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2512
ctypes.byref(buf_len))
1845
(gnutls.library.functions
1846
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1847
ctypes.byref(buf_len)))
2513
1848
# Deinit the certificate
2514
gnutls.openpgp_crt_deinit(crt)
1849
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2515
1850
# Convert the buffer to a Python bytestring
2516
1851
fpr = ctypes.string_at(buf, buf_len.value)
2517
1852
# Convert the bytestring to hexadecimal notation
2606
1935
# socket_wrapper(), if socketfd was set.
2607
1936
socketserver.TCPServer.__init__(self, server_address,
2608
1937
RequestHandlerClass)
2610
1939
def server_bind(self):
2611
1940
"""This overrides the normal server_bind() function
2612
1941
to bind to an interface if one was specified, and also NOT to
2613
1942
bind to an address or port if they were not specified."""
2614
global SO_BINDTODEVICE
2615
1943
if self.interface is not None:
2616
1944
if SO_BINDTODEVICE is None:
2617
# Fall back to a hard-coded value which seems to be
2619
logger.warning("SO_BINDTODEVICE not found, trying 25")
2620
SO_BINDTODEVICE = 25
2622
self.socket.setsockopt(
2623
socket.SOL_SOCKET, SO_BINDTODEVICE,
2624
(self.interface + "\0").encode("utf-8"))
2625
except socket.error as error:
2626
if error.errno == errno.EPERM:
2627
logger.error("No permission to bind to"
2628
" interface %s", self.interface)
2629
elif error.errno == errno.ENOPROTOOPT:
2630
logger.error("SO_BINDTODEVICE not available;"
2631
" cannot bind to interface %s",
2633
elif error.errno == errno.ENODEV:
2634
logger.error("Interface %s does not exist,"
2635
" 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)
2638
1966
# Only bind(2) the socket if we really need to.
2639
1967
if self.server_address[0] or self.server_address[1]:
2640
if self.server_address[1]:
2641
self.allow_reuse_address = True
2642
1968
if not self.server_address[0]:
2643
1969
if self.address_family == socket.AF_INET6:
2644
any_address = "::" # in6addr_any
1970
any_address = "::" # in6addr_any
2646
any_address = "0.0.0.0" # INADDR_ANY
1972
any_address = socket.INADDR_ANY
2647
1973
self.server_address = (any_address,
2648
1974
self.server_address[1])
2649
1975
elif not self.server_address[1]:
2650
self.server_address = (self.server_address[0], 0)
1976
self.server_address = (self.server_address[0],
2651
1978
# if self.interface:
2652
1979
# self.server_address = (self.server_address[0],
2683
2005
self.gnutls_priority = gnutls_priority
2684
2006
IPv6_TCPServer.__init__(self, server_address,
2685
2007
RequestHandlerClass,
2686
interface=interface,
2008
interface = interface,
2009
use_ipv6 = use_ipv6,
2010
socketfd = socketfd)
2690
2011
def server_activate(self):
2691
2012
if self.enabled:
2692
2013
return socketserver.TCPServer.server_activate(self)
2694
2015
def enable(self):
2695
2016
self.enabled = True
2697
2018
def add_pipe(self, parent_pipe, proc):
2698
2019
# Call "handle_ipc" for both data and EOF events
2700
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2701
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2702
functools.partial(self.handle_ipc,
2703
parent_pipe=parent_pipe,
2706
def handle_ipc(self, source, condition,
2709
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):
2710
2029
# error, or the other end of multiprocessing.Pipe has closed
2711
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2030
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2712
2031
# Wait for other process to exit
2716
2035
# Read a request from the child
2717
2036
request = parent_pipe.recv()
2718
2037
command = request[0]
2720
2039
if command == 'init':
2721
key_id = request[1].decode("ascii")
2722
fpr = request[2].decode("ascii")
2723
address = request[3]
2725
for c in self.clients.values():
2726
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2728
if key_id and c.key_id == key_id:
2731
if fpr and c.fingerprint == fpr:
2041
address = request[2]
2043
for c in self.clients.itervalues():
2044
if c.fingerprint == fpr:
2735
logger.info("Client not found for key ID: %s, address"
2736
": %s", key_id or fpr, address)
2048
logger.info("Client not found for fingerprint: %s, ad"
2049
"dress: %s", fpr, address)
2737
2050
if self.use_dbus:
2738
2051
# Emit D-Bus signal
2739
mandos_dbus_service.ClientNotFound(key_id or fpr,
2052
mandos_dbus_service.ClientNotFound(fpr,
2741
2054
parent_pipe.send(False)
2745
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2746
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2747
functools.partial(self.handle_ipc,
2748
parent_pipe=parent_pipe,
2750
client_object=client))
2057
gobject.io_add_watch(parent_pipe.fileno(),
2058
gobject.IO_IN | gobject.IO_HUP,
2059
functools.partial(self.handle_ipc,
2751
2065
parent_pipe.send(True)
2752
2066
# remove the old hook in favor of the new above hook on
2756
2070
funcname = request[1]
2757
2071
args = request[2]
2758
2072
kwargs = request[3]
2760
2074
parent_pipe.send(('data', getattr(client_object,
2761
2075
funcname)(*args,
2764
2078
if command == 'getattr':
2765
2079
attrname = request[1]
2766
if isinstance(client_object.__getattribute__(attrname),
2767
collections.abc.Callable):
2768
parent_pipe.send(('function', ))
2080
if callable(client_object.__getattribute__(attrname)):
2081
parent_pipe.send(('function',))
2771
'data', client_object.__getattribute__(attrname)))
2083
parent_pipe.send(('data', client_object
2084
.__getattribute__(attrname)))
2773
2086
if command == 'setattr':
2774
2087
attrname = request[1]
2775
2088
value = request[2]
2776
2089
setattr(client_object, attrname, value)
2781
2094
def rfc3339_duration_to_delta(duration):
2782
2095
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2784
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2786
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2788
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2790
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2792
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2794
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2796
>>> 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)
2800
2113
# Parsing an RFC 3339 duration with regular expressions is not
2801
2114
# possible - there would have to be multiple places for the same
2802
2115
# values, like seconds. The current code, while more esoteric, is
2803
2116
# cleaner without depending on a parsing library. If Python had a
2804
2117
# built-in library for parsing we would use it, but we'd like to
2805
2118
# avoid excessive use of external libraries.
2807
2120
# New type for defining tokens, syntax, and semantics all-in-one
2808
Token = collections.namedtuple("Token", (
2809
"regexp", # To match token; if "value" is not None, must have
2810
# a "group" containing digits
2811
"value", # datetime.timedelta or None
2812
"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
2813
2130
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2814
2131
# the "duration" ABNF definition in RFC 3339, Appendix A.
2815
2132
token_end = Token(re.compile(r"$"), None, frozenset())
2816
2133
token_second = Token(re.compile(r"(\d+)S"),
2817
2134
datetime.timedelta(seconds=1),
2818
frozenset((token_end, )))
2135
frozenset((token_end,)))
2819
2136
token_minute = Token(re.compile(r"(\d+)M"),
2820
2137
datetime.timedelta(minutes=1),
2821
2138
frozenset((token_second, token_end)))
2980
2294
parser.add_argument("--no-dbus", action="store_false",
2981
2295
dest="use_dbus", help="Do not provide D-Bus"
2982
" system bus interface", default=None)
2296
" system bus interface")
2983
2297
parser.add_argument("--no-ipv6", action="store_false",
2984
dest="use_ipv6", help="Do not use IPv6",
2298
dest="use_ipv6", help="Do not use IPv6")
2986
2299
parser.add_argument("--no-restore", action="store_false",
2987
2300
dest="restore", help="Do not restore stored"
2988
" state", default=None)
2989
2302
parser.add_argument("--socket", type=int,
2990
2303
help="Specify a file descriptor to a network"
2991
2304
" socket to use instead of creating one")
2992
2305
parser.add_argument("--statedir", metavar="DIR",
2993
2306
help="Directory to save/restore state in")
2994
2307
parser.add_argument("--foreground", action="store_true",
2995
help="Run in foreground", default=None)
2996
parser.add_argument("--no-zeroconf", action="store_false",
2997
dest="zeroconf", help="Do not use Zeroconf",
2308
help="Run in foreground")
3000
2310
options = parser.parse_args()
3002
2317
# Default values for config file for server-global settings
3003
if gnutls.has_rawpk:
3004
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3005
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3007
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3008
":+SIGN-DSA-SHA256")
3009
server_defaults = {"interface": "",
3013
"priority": priority,
3014
"servicename": "Mandos",
3020
"statedir": "/var/lib/mandos",
3021
"foreground": "False",
2318
server_defaults = { "interface": "",
2323
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2324
"servicename": "Mandos",
2330
"statedir": "/var/lib/mandos",
2331
"foreground": "False",
3026
2334
# Parse config file for server-global settings
3027
server_config = configparser.ConfigParser(server_defaults)
2335
server_config = configparser.SafeConfigParser(server_defaults)
3028
2336
del server_defaults
3029
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3030
# Convert the ConfigParser object to a dict
2337
server_config.read(os.path.join(options.configdir,
2339
# Convert the SafeConfigParser object to a dict
3031
2340
server_settings = server_config.defaults()
3032
2341
# Use the appropriate methods on the non-string config options
3033
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3034
"foreground", "zeroconf"):
2342
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3035
2343
server_settings[option] = server_config.getboolean("DEFAULT",
3037
2345
if server_settings["port"]:
3153
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3155
2447
except OSError as error:
3156
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3157
.format(uid, gid, os.strerror(error.errno)))
3158
2448
if error.errno != errno.EPERM:
3162
2452
# Enable all possible GnuTLS debugging
3164
2454
# "Use a log level over 10 to enable all debugging options."
3165
2455
# - GnuTLS manual
3166
gnutls.global_set_log_level(11)
2456
gnutls.library.functions.gnutls_global_set_log_level(11)
2458
@gnutls.library.types.gnutls_log_func
3169
2459
def debug_gnutls(level, string):
3170
2460
logger.debug("GnuTLS: %s", string[:-1])
3172
gnutls.global_set_log_function(debug_gnutls)
2462
(gnutls.library.functions
2463
.gnutls_global_set_log_function(debug_gnutls))
3174
2465
# Redirect stdin so all checkers get /dev/null
3175
2466
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3176
2467
os.dup2(null, sys.stdin.fileno())
3180
2471
# Need to fork before connecting to D-Bus
3181
2472
if not foreground:
3182
2473
# Close all input and output, do double fork, etc.
3185
if gi.version_info < (3, 10, 2):
3186
# multiprocessing will use threads, so before we use GLib we
3187
# 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()
3190
2480
global main_loop
3191
2481
# From the Avahi example code
3192
2482
DBusGMainLoop(set_as_default=True)
3193
main_loop = GLib.MainLoop()
2483
main_loop = gobject.MainLoop()
3194
2484
bus = dbus.SystemBus()
3195
2485
# End of Avahi example code
3198
2488
bus_name = dbus.service.BusName("se.recompile.Mandos",
3201
old_bus_name = dbus.service.BusName(
3202
"se.bsnet.fukt.Mandos", bus,
3204
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:
3205
2494
logger.error("Disabling D-Bus:", exc_info=e)
3206
2495
use_dbus = False
3207
2496
server_settings["use_dbus"] = False
3208
2497
tcp_server.use_dbus = False
3210
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3211
service = AvahiServiceToSyslog(
3212
name=server_settings["servicename"],
3213
servicetype="_mandos._tcp",
3216
if server_settings["interface"]:
3217
service.interface = if_nametoindex(
3218
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"])))
3220
2507
global multiprocessing_manager
3221
2508
multiprocessing_manager = multiprocessing.Manager()
3223
2510
client_class = Client
3225
client_class = functools.partial(ClientDBus, bus=bus)
2512
client_class = functools.partial(ClientDBus, bus = bus)
3227
2514
client_settings = Client.config_parser(client_config)
3228
2515
old_client_settings = {}
3229
2516
clients_data = {}
3231
# This is used to redirect stdout and stderr for checker processes
3233
wnull = open(os.devnull, "w") # A writable /dev/null
3234
# Only used if server is running in foreground but not in debug
3236
if debug or not foreground:
3239
2518
# Get client data and settings from last running state.
3240
2519
if server_settings["restore"]:
3242
2521
with open(stored_state_path, "rb") as stored_state:
3243
if sys.version_info.major == 2:
3244
clients_data, old_client_settings = pickle.load(
3247
bytes_clients_data, bytes_old_client_settings = (
3248
pickle.load(stored_state, encoding="bytes"))
3249
# Fix bytes to strings
3252
clients_data = {(key.decode("utf-8")
3253
if isinstance(key, bytes)
3256
bytes_clients_data.items()}
3257
del bytes_clients_data
3258
for key in clients_data:
3259
value = {(k.decode("utf-8")
3260
if isinstance(k, bytes) else k): v
3262
clients_data[key].items()}
3263
clients_data[key] = value
3265
value["client_structure"] = [
3267
if isinstance(s, bytes)
3269
value["client_structure"]]
3270
# .name, .host, and .checker_command
3271
for k in ("name", "host", "checker_command"):
3272
if isinstance(value[k], bytes):
3273
value[k] = value[k].decode("utf-8")
3274
if "key_id" not in value:
3275
value["key_id"] = ""
3276
elif "fingerprint" not in value:
3277
value["fingerprint"] = ""
3278
# old_client_settings
3280
old_client_settings = {
3281
(key.decode("utf-8")
3282
if isinstance(key, bytes)
3285
bytes_old_client_settings.items()}
3286
del bytes_old_client_settings
3287
# .host and .checker_command
3288
for value in old_client_settings.values():
3289
for attribute in ("host", "checker_command"):
3290
if isinstance(value[attribute], bytes):
3291
value[attribute] = (value[attribute]
2522
clients_data, old_client_settings = (pickle.load
3293
2524
os.remove(stored_state_path)
3294
2525
except IOError as e:
3295
2526
if e.errno == errno.ENOENT:
3296
logger.warning("Could not load persistent state:"
3297
" {}".format(os.strerror(e.errno)))
2527
logger.warning("Could not load persistent state: {0}"
2528
.format(os.strerror(e.errno)))
3299
2530
logger.critical("Could not load persistent state:",
3302
2533
except EOFError as e:
3303
2534
logger.warning("Could not load persistent state: "
2535
"EOFError:", exc_info=e)
3307
2537
with PGPEngine() as pgp:
3308
for client_name, client in clients_data.items():
3309
# Skip removed clients
3310
if client_name not in client_settings:
2538
for client_name, client in clients_data.iteritems():
3313
2539
# Decide which value to use after restoring saved state.
3314
2540
# We have three different values: Old config file,
3315
2541
# new config file, and saved state.
3373
2599
for client_name in (set(client_settings)
3374
2600
- set(old_client_settings)):
3375
2601
clients_data[client_name] = client_settings[client_name]
3377
2603
# Create all client objects
3378
for client_name, client in clients_data.items():
2604
for client_name, client in clients_data.iteritems():
3379
2605
tcp_server.clients[client_name] = client_class(
3382
server_settings=server_settings)
2606
name = client_name, settings = client)
3384
2608
if not tcp_server.clients:
3385
2609
logger.warning("No clients defined")
3387
2611
if not foreground:
3388
2612
if pidfile is not None:
3392
print(pid, file=pidfile)
2616
pidfile.write(str(pid) + "\n".encode("utf-8"))
3393
2617
except IOError:
3394
2618
logger.error("Could not write to file %r with PID %d",
3395
2619
pidfilename, pid)
3397
2621
del pidfilename
3399
for termsig in (signal.SIGHUP, signal.SIGTERM):
3400
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3401
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())
3405
@alternate_dbus_interfaces(
3406
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3407
class MandosDBusService(DBusObjectWithObjectManager):
2627
@alternate_dbus_interfaces({"se.recompile.Mandos":
2628
"se.bsnet.fukt.Mandos"})
2629
class MandosDBusService(DBusObjectWithProperties):
3408
2630
"""A D-Bus proxy object"""
3410
2631
def __init__(self):
3411
2632
dbus.service.Object.__init__(self, bus, "/")
3413
2633
_interface = "se.recompile.Mandos"
2635
@dbus_interface_annotations(_interface)
2637
return { "org.freedesktop.DBus.Property"
2638
".EmitsChangedSignal":
3415
2641
@dbus.service.signal(_interface, signature="o")
3416
2642
def ClientAdded(self, objpath):
3420
2646
@dbus.service.signal(_interface, signature="ss")
3421
def ClientNotFound(self, key_id, address):
2647
def ClientNotFound(self, fingerprint, address):
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3427
2651
@dbus.service.signal(_interface, signature="os")
3428
2652
def ClientRemoved(self, objpath, name):
3432
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3434
2656
@dbus.service.method(_interface, out_signature="ao")
3435
2657
def GetAllClients(self):
3437
return dbus.Array(c.dbus_object_path for c in
3438
tcp_server.clients.values())
3440
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2659
return dbus.Array(c.dbus_object_path
2661
tcp_server.clients.itervalues())
3442
2663
@dbus.service.method(_interface,
3443
2664
out_signature="a{oa{sv}}")
3444
2665
def GetAllClientsWithProperties(self):
3446
2667
return dbus.Dictionary(
3447
{c.dbus_object_path: c.GetAll(
3448
"se.recompile.Mandos.Client")
3449
for c in tcp_server.clients.values()},
2668
((c.dbus_object_path, c.GetAll(""))
2669
for c in tcp_server.clients.itervalues()),
3450
2670
signature="oa{sv}")
3452
2672
@dbus.service.method(_interface, in_signature="o")
3453
2673
def RemoveClient(self, object_path):
3455
for c in tcp_server.clients.values():
2675
for c in tcp_server.clients.itervalues():
3456
2676
if c.dbus_object_path == object_path:
3457
2677
del tcp_server.clients[c.name]
3458
2678
c.remove_from_connection()
3459
# Don't signal the disabling
2679
# Don't signal anything except ClientRemoved
3460
2680
c.disable(quiet=True)
3461
# Emit D-Bus signal for removal
3462
self.client_removed_signal(c)
2682
self.ClientRemoved(object_path, c.name)
3464
2684
raise KeyError(object_path)
3468
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3469
out_signature="a{oa{sa{sv}}}")
3470
def GetManagedObjects(self):
3472
return dbus.Dictionary(
3473
{client.dbus_object_path:
3475
{interface: client.GetAll(interface)
3477
client._get_all_interface_names()})
3478
for client in tcp_server.clients.values()})
3480
def client_added_signal(self, client):
3481
"""Send the new standard signal and the old signal"""
3483
# New standard signal
3484
self.InterfacesAdded(
3485
client.dbus_object_path,
3487
{interface: client.GetAll(interface)
3489
client._get_all_interface_names()}))
3491
self.ClientAdded(client.dbus_object_path)
3493
def client_removed_signal(self, client):
3494
"""Send the new standard signal and the old signal"""
3496
# New standard signal
3497
self.InterfacesRemoved(
3498
client.dbus_object_path,
3499
client._get_all_interface_names())
3501
self.ClientRemoved(client.dbus_object_path,
3504
2688
mandos_dbus_service = MandosDBusService()
3506
# Save modules to variables to exempt the modules from being
3507
# unloaded before the function registered with atexit() is run.
3508
mp = multiprocessing
3512
2691
"Cleanup function; run on exit"
3516
mp.active_children()
2694
multiprocessing.active_children()
3518
2695
if not (tcp_server.clients or client_settings):
3521
2698
# Store client before exiting. Secrets are encrypted with key
3522
2699
# based on what config file has. If config file is
3523
2700
# removed/edited, old secret will thus be unrecovable.
3525
2702
with PGPEngine() as pgp:
3526
for client in tcp_server.clients.values():
2703
for client in tcp_server.clients.itervalues():
3527
2704
key = client_settings[client.name]["secret"]
3528
2705
client.encrypted_secret = pgp.encrypt(client.secret,
3530
2707
client_dict = {}
3532
2709
# A list of attributes that can not be pickled
3534
exclude = {"bus", "changedstate", "secret",
3535
"checker", "server_settings"}
3536
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)):
3538
2715
exclude.add(name)
3540
2717
client_dict["encrypted_secret"] = (client
3541
2718
.encrypted_secret)
3542
2719
for attr in client.client_structure:
3543
2720
if attr not in exclude:
3544
2721
client_dict[attr] = getattr(client, attr)
3546
2723
clients[client.name] = client_dict
3547
2724
del client_settings[client.name]["secret"]
3550
with tempfile.NamedTemporaryFile(
3554
dir=os.path.dirname(stored_state_path),
3555
delete=False) as stored_state:
3556
pickle.dump((clients, client_settings), stored_state,
3558
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
3559
2733
os.rename(tempname, stored_state_path)
3560
2734
except (IOError, OSError) as e: