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",
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10
# "entry_group_state_changed", "cleanup", and "activate" in the
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11
# "AvahiService" class, and some lines in "main".
13
13
# Everything else is
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# 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
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# 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/>.
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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# Contact the authors at <mandos@recompile.se>.
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34
from __future__ import (division, absolute_import, print_function,
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from future_builtins import *
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from future_builtins import *
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import SocketServer as socketserver
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import SocketServer as socketserver
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import ConfigParser as configparser
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import gnutls.connection
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import gnutls.library.functions
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import gnutls.library.constants
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import gnutls.library.types
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import ConfigParser as configparser
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import cPickle as pickle
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import cPickle as pickle
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66
import multiprocessing
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74
import dbus.service
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from gi.repository import GLib
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77
from dbus.mainloop.glib import DBusGMainLoop
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import xml.dom.minidom
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if sys.version_info.major == 2:
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# Show warnings by default
96
if not sys.warnoptions:
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warnings.simplefilter("default")
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# Try to find the value of SO_BINDTODEVICE:
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# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
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# newer, and it is also the most natural place for it:
104
85
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
105
86
except AttributeError:
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# This is where SO_BINDTODEVICE was up to and including Python
109
88
from IN import SO_BINDTODEVICE
110
89
except ImportError:
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# In Python 2.7 it seems to have been removed entirely.
112
# Try running the C preprocessor:
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cc = subprocess.Popen(["cc", "--language=c", "-E",
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE)
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stdout = cc.communicate(
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"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
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SO_BINDTODEVICE = int(stdout.splitlines()[-1])
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except (OSError, ValueError, IndexError):
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SO_BINDTODEVICE = None
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if sys.version_info.major == 2:
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if sys.version_info < (3, 2):
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configparser.Configparser = configparser.SafeConfigParser
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SO_BINDTODEVICE = None
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93
stored_state_file = "clients.pickle"
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95
logger = logging.getLogger()
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logging.captureWarnings(True) # Show warnings via the logging system
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syslogger = (logging.handlers.SysLogHandler
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = str("/dev/log")))
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if_nametoindex = ctypes.cdll.LoadLibrary(
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ctypes.util.find_library("c")).if_nametoindex
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if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
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104
except (OSError, AttributeError):
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105
def if_nametoindex(interface):
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106
"Get an interface index the hard way, i.e. using fcntl()"
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107
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
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108
with contextlib.closing(socket.socket()) as s:
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109
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
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struct.pack(b"16s16x", interface))
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interface_index = struct.unpack("I", ifreq[16:20])[0]
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struct.pack(str("16s16x"),
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interface_index = struct.unpack(str("I"),
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114
return interface_index
153
def copy_function(func):
154
"""Make a copy of a function"""
155
if sys.version_info.major == 2:
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return types.FunctionType(func.func_code,
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return types.FunctionType(func.__code__,
169
117
def initlogger(debug, level=logging.WARNING):
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118
"""init logger and add loglevel"""
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syslogger = (logging.handlers.SysLogHandler(
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facility=logging.handlers.SysLogHandler.LOG_DAEMON,
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syslogger.setFormatter(logging.Formatter
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('Mandos [%(process)d]: %(levelname)s:'
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123
logger.addHandler(syslogger)
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
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os.rmdir(self.tempdir)
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self.tempdir = None
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175
def password_encode(self, password):
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176
# Passphrase can not be empty and can not contain newlines or
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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"\\\\")
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.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()
1056
if self.checker is not None:
1058
628
self.checker_callback_tag = None
1059
629
self.checker = None
1062
self.last_checker_status = returncode
1063
self.last_checker_signal = None
630
if os.WIFEXITED(condition):
631
self.last_checker_status = os.WEXITSTATUS(condition)
1064
632
if self.last_checker_status == 0:
1065
633
logger.info("Checker for %(name)s succeeded",
1067
635
self.checked_ok()
1069
logger.info("Checker for %(name)s failed", vars(self))
637
logger.info("Checker for %(name)s failed",
1071
640
self.last_checker_status = -1
1072
self.last_checker_signal = -returncode
1073
641
logger.warning("Checker for %(name)s crashed?",
1077
644
def checked_ok(self):
1078
645
"""Assert that the client has been seen, alive and well."""
1079
646
self.last_checked_ok = datetime.datetime.utcnow()
1080
647
self.last_checker_status = 0
1081
self.last_checker_signal = None
1082
648
self.bump_timeout()
1084
650
def bump_timeout(self, timeout=None):
1085
651
"""Bump up the timeout for this client."""
1086
652
if timeout is None:
1087
653
timeout = self.timeout
1088
654
if self.disable_initiator_tag is not None:
1089
GLib.source_remove(self.disable_initiator_tag)
655
gobject.source_remove(self.disable_initiator_tag)
1090
656
self.disable_initiator_tag = None
1091
657
if getattr(self, "enabled", False):
1092
self.disable_initiator_tag = GLib.timeout_add(
1093
int(timeout.total_seconds() * 1000), self.disable)
658
self.disable_initiator_tag = (gobject.timeout_add
659
(timedelta_to_milliseconds
660
(timeout), self.disable))
1094
661
self.expires = datetime.datetime.utcnow() + timeout
1096
663
def need_approval(self):
1097
664
self.last_approval_request = datetime.datetime.utcnow()
1099
666
def start_checker(self):
1100
667
"""Start a new checker subprocess if one is not running.
1102
669
If a checker already exists, leave it running and do
1104
671
# The reason for not killing a running checker is that if we
1109
676
# checkers alone, the checker would have to take more time
1110
677
# than 'timeout' for the client to be disabled, which is as it
1113
if self.checker is not None and not self.checker.is_alive():
1114
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)
1117
693
# Start a new checker if needed
1118
694
if self.checker is None:
1119
695
# Escape attributes for the shell
1121
attr: re.escape(str(getattr(self, attr)))
1122
for attr in self.runtime_expansions}
696
escaped_attrs = dict(
697
(attr, re.escape(unicode(getattr(self, attr))))
699
self.runtime_expansions)
1124
701
command = self.checker_command % escaped_attrs
1125
702
except TypeError as error:
1126
703
logger.error('Could not format string "%s"',
1127
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",
1129
return True # Try again later
1130
self.current_checker_command = command
1131
logger.info("Starting checker %r for %s", command,
1133
# We don't need to redirect stdout and stderr, since
1134
# in normal mode, that is already done by daemon(),
1135
# and in debug mode we don't want to. (Stdin is
1136
# always replaced by /dev/null.)
1137
# The exception is when not debugging but nevertheless
1138
# running in the foreground; use the previously
1140
popen_args = {"close_fds": True,
1143
if (not self.server_settings["debug"]
1144
and self.server_settings["foreground"]):
1145
popen_args.update({"stdout": wnull,
1147
pipe = multiprocessing.Pipe(duplex=False)
1148
self.checker = multiprocessing.Process(
1150
args=(pipe[1], subprocess.call, command),
1152
self.checker.start()
1153
self.checker_callback_tag = GLib.io_add_watch(
1154
GLib.IOChannel.unix_new(pipe[0].fileno()),
1155
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1156
self.checker_callback, pipe[0], command)
1157
# 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
1160
733
def stop_checker(self):
1161
734
"""Force the checker process, if any, to stop."""
1162
735
if self.checker_callback_tag:
1163
GLib.source_remove(self.checker_callback_tag)
736
gobject.source_remove(self.checker_callback_tag)
1164
737
self.checker_callback_tag = None
1165
738
if getattr(self, "checker", None) is None:
1167
740
logger.debug("Stopping checker for %(name)s", vars(self))
1168
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
1169
749
self.checker = None
1172
def dbus_service_property(dbus_interface,
752
def dbus_service_property(dbus_interface, signature="v",
753
access="readwrite", byte_arrays=False):
1176
754
"""Decorators for marking methods of a DBusObjectWithProperties to
1177
755
become properties on the D-Bus.
1179
757
The decorated method will be called with no arguments by "Get"
1180
758
and with one argument by "Set".
1182
760
The parameters, where they are supported, are the same as
1183
761
dbus.service.method, except there is only "signature", since the
1184
762
type from Get() and the type sent to Set() is the same.
1267
class DBusObjectWithAnnotations(dbus.service.Object):
1268
"""A D-Bus object with annotations.
1270
Classes inheriting from this can use the dbus_annotations
1271
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.
1275
847
def _is_dbus_thing(thing):
1276
848
"""Returns a function testing if an attribute is a D-Bus thing
1278
850
If called like _is_dbus_thing("method") it returns a function
1279
851
suitable for use as predicate to inspect.getmembers().
1281
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
853
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1284
856
def _get_all_dbus_things(self, thing):
1285
857
"""Returns a generator of (name, attribute) pairs
1287
return ((getattr(athing.__get__(self), "_dbus_name", name),
859
return ((getattr(athing.__get__(self), "_dbus_name",
1288
861
athing.__get__(self))
1289
862
for cls in self.__class__.__mro__
1290
863
for name, athing in
1291
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1293
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1295
path_keyword='object_path',
1296
connection_keyword='connection')
1297
def Introspect(self, object_path, connection):
1298
"""Overloading of standard D-Bus method.
1300
Inserts annotation tags on methods and signals.
1302
xmlstring = dbus.service.Object.Introspect(self, object_path,
1305
document = xml.dom.minidom.parseString(xmlstring)
1307
for if_tag in document.getElementsByTagName("interface"):
1308
# Add annotation tags
1309
for typ in ("method", "signal"):
1310
for tag in if_tag.getElementsByTagName(typ):
1312
for name, prop in (self.
1313
_get_all_dbus_things(typ)):
1314
if (name == tag.getAttribute("name")
1315
and prop._dbus_interface
1316
== if_tag.getAttribute("name")):
1317
annots.update(getattr(
1318
prop, "_dbus_annotations", {}))
1319
for name, value in annots.items():
1320
ann_tag = document.createElement(
1322
ann_tag.setAttribute("name", name)
1323
ann_tag.setAttribute("value", value)
1324
tag.appendChild(ann_tag)
1325
# Add interface annotation tags
1326
for annotation, value in dict(
1327
itertools.chain.from_iterable(
1328
annotations().items()
1329
for name, annotations
1330
in self._get_all_dbus_things("interface")
1331
if name == if_tag.getAttribute("name")
1333
ann_tag = document.createElement("annotation")
1334
ann_tag.setAttribute("name", annotation)
1335
ann_tag.setAttribute("value", value)
1336
if_tag.appendChild(ann_tag)
1337
# Fix argument name for the Introspect method itself
1338
if (if_tag.getAttribute("name")
1339
== dbus.INTROSPECTABLE_IFACE):
1340
for cn in if_tag.getElementsByTagName("method"):
1341
if cn.getAttribute("name") == "Introspect":
1342
for arg in cn.getElementsByTagName("arg"):
1343
if (arg.getAttribute("direction")
1345
arg.setAttribute("name",
1347
xmlstring = document.toxml("utf-8")
1349
except (AttributeError, xml.dom.DOMException,
1350
xml.parsers.expat.ExpatError) as error:
1351
logger.error("Failed to override Introspection method",
1356
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1357
"""A D-Bus object with properties.
1359
Classes inheriting from this can use the dbus_service_property
1360
decorator to expose methods as D-Bus properties. It exposes the
1361
standard Get(), Set(), and GetAll() methods on the D-Bus.
864
inspect.getmembers(cls,
865
self._is_dbus_thing(thing)))
1364
867
def _get_dbus_property(self, interface_name, property_name):
1365
868
"""Returns a bound method if one exists which is a D-Bus
1366
869
property with the specified name and interface.
1368
for cls in self.__class__.__mro__:
1369
for name, value in inspect.getmembers(
1370
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"))):
1371
875
if (value._dbus_name == property_name
1372
876
and value._dbus_interface == interface_name):
1373
877
return value.__get__(self)
1375
879
# No such property
1376
raise DBusPropertyNotFound("{}:{}.{}".format(
1377
self.dbus_object_path, interface_name, property_name))
1380
def _get_all_interface_names(cls):
1381
"""Get a sequence of all interfaces supported by an object"""
1382
return (name for name in set(getattr(getattr(x, attr),
1383
"_dbus_interface", None)
1384
for x in (inspect.getmro(cls))
1386
if name is not None)
1388
@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",
1390
885
out_signature="v")
1391
886
def Get(self, interface_name, property_name):
1392
887
"""Standard D-Bus property Get() method, see D-Bus standard.
1521
1017
return xmlstring
1525
dbus.OBJECT_MANAGER_IFACE
1526
except AttributeError:
1527
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1530
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1531
"""A D-Bus object with an ObjectManager.
1533
Classes inheriting from this exposes the standard
1534
GetManagedObjects call and the InterfacesAdded and
1535
InterfacesRemoved signals on the standard
1536
"org.freedesktop.DBus.ObjectManager" interface.
1538
Note: No signals are sent automatically; they must be sent
1541
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1542
out_signature="a{oa{sa{sv}}}")
1543
def GetManagedObjects(self):
1544
"""This function must be overridden"""
1545
raise NotImplementedError()
1547
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1548
signature="oa{sa{sv}}")
1549
def InterfacesAdded(self, object_path, interfaces_and_properties):
1552
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1553
def InterfacesRemoved(self, object_path, interfaces):
1556
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1558
path_keyword='object_path',
1559
connection_keyword='connection')
1560
def Introspect(self, object_path, connection):
1561
"""Overloading of standard D-Bus method.
1563
Override return argument name of GetManagedObjects to be
1564
"objpath_interfaces_and_properties"
1566
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1570
document = xml.dom.minidom.parseString(xmlstring)
1572
for if_tag in document.getElementsByTagName("interface"):
1573
# Fix argument name for the GetManagedObjects method
1574
if (if_tag.getAttribute("name")
1575
== dbus.OBJECT_MANAGER_IFACE):
1576
for cn in if_tag.getElementsByTagName("method"):
1577
if (cn.getAttribute("name")
1578
== "GetManagedObjects"):
1579
for arg in cn.getElementsByTagName("arg"):
1580
if (arg.getAttribute("direction")
1584
"objpath_interfaces"
1586
xmlstring = document.toxml("utf-8")
1588
except (AttributeError, xml.dom.DOMException,
1589
xml.parsers.expat.ExpatError) as error:
1590
logger.error("Failed to override Introspection method",
1595
1020
def datetime_to_dbus(dt, variant_level=0):
1596
1021
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1598
return dbus.String("", variant_level=variant_level)
1599
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)
1602
1028
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1963
1381
server to mandos-client
1967
1385
# Rejected - signal
1968
1386
@dbus.service.signal(_interface, signature="s")
1969
1387
def Rejected(self, reason):
1973
1391
# NeedApproval - signal
1974
1392
@dbus.service.signal(_interface, signature="tb")
1975
1393
def NeedApproval(self, timeout, default):
1977
1395
return self.need_approval()
1981
1399
# Approve - method
1982
1400
@dbus.service.method(_interface, in_signature="b")
1983
1401
def Approve(self, value):
1984
1402
self.approve(value)
1986
1404
# CheckedOK - method
1987
1405
@dbus.service.method(_interface)
1988
1406
def CheckedOK(self):
1989
1407
self.checked_ok()
1991
1409
# Enable - method
1992
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1993
1410
@dbus.service.method(_interface)
1994
1411
def Enable(self):
1998
1415
# StartChecker - method
1999
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2000
1416
@dbus.service.method(_interface)
2001
1417
def StartChecker(self):
2003
1419
self.start_checker()
2005
1421
# Disable - method
2006
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2007
1422
@dbus.service.method(_interface)
2008
1423
def Disable(self):
2012
1427
# StopChecker - method
2013
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2014
1428
@dbus.service.method(_interface)
2015
1429
def StopChecker(self):
2016
1430
self.stop_checker()
2020
1434
# ApprovalPending - property
2021
1435
@dbus_service_property(_interface, signature="b", access="read")
2022
1436
def ApprovalPending_dbus_property(self):
2023
1437
return dbus.Boolean(bool(self.approvals_pending))
2025
1439
# ApprovedByDefault - property
2026
@dbus_service_property(_interface,
1440
@dbus_service_property(_interface, signature="b",
2028
1441
access="readwrite")
2029
1442
def ApprovedByDefault_dbus_property(self, value=None):
2030
1443
if value is None: # get
2031
1444
return dbus.Boolean(self.approved_by_default)
2032
1445
self.approved_by_default = bool(value)
2034
1447
# ApprovalDelay - property
2035
@dbus_service_property(_interface,
1448
@dbus_service_property(_interface, signature="t",
2037
1449
access="readwrite")
2038
1450
def ApprovalDelay_dbus_property(self, value=None):
2039
1451
if value is None: # get
2040
return dbus.UInt64(self.approval_delay.total_seconds()
1452
return dbus.UInt64(self.approval_delay_milliseconds())
2042
1453
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2044
1455
# ApprovalDuration - property
2045
@dbus_service_property(_interface,
1456
@dbus_service_property(_interface, signature="t",
2047
1457
access="readwrite")
2048
1458
def ApprovalDuration_dbus_property(self, value=None):
2049
1459
if value is None: # get
2050
return dbus.UInt64(self.approval_duration.total_seconds()
1460
return dbus.UInt64(timedelta_to_milliseconds(
1461
self.approval_duration))
2052
1462
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2054
1464
# Name - property
2056
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2057
1465
@dbus_service_property(_interface, signature="s", access="read")
2058
1466
def Name_dbus_property(self):
2059
1467
return dbus.String(self.name)
2063
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2064
@dbus_service_property(_interface, signature="s", access="read")
2065
def KeyID_dbus_property(self):
2066
return dbus.String(self.key_id)
2068
1469
# Fingerprint - property
2070
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2071
1470
@dbus_service_property(_interface, signature="s", access="read")
2072
1471
def Fingerprint_dbus_property(self):
2073
1472
return dbus.String(self.fingerprint)
2075
1474
# Host - property
2076
@dbus_service_property(_interface,
1475
@dbus_service_property(_interface, signature="s",
2078
1476
access="readwrite")
2079
1477
def Host_dbus_property(self, value=None):
2080
1478
if value is None: # get
2081
1479
return dbus.String(self.host)
2082
self.host = str(value)
1480
self.host = unicode(value)
2084
1482
# Created - property
2086
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2087
1483
@dbus_service_property(_interface, signature="s", access="read")
2088
1484
def Created_dbus_property(self):
2089
1485
return datetime_to_dbus(self.created)
2091
1487
# LastEnabled - property
2092
1488
@dbus_service_property(_interface, signature="s", access="read")
2093
1489
def LastEnabled_dbus_property(self):
2094
1490
return datetime_to_dbus(self.last_enabled)
2096
1492
# Enabled - property
2097
@dbus_service_property(_interface,
1493
@dbus_service_property(_interface, signature="b",
2099
1494
access="readwrite")
2100
1495
def Enabled_dbus_property(self, value=None):
2101
1496
if value is None: # get
2150
1544
if (getattr(self, "disable_initiator_tag", None)
2153
GLib.source_remove(self.disable_initiator_tag)
2154
self.disable_initiator_tag = GLib.timeout_add(
2155
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),
2158
1553
# ExtendedTimeout - property
2159
@dbus_service_property(_interface,
1554
@dbus_service_property(_interface, signature="t",
2161
1555
access="readwrite")
2162
1556
def ExtendedTimeout_dbus_property(self, value=None):
2163
1557
if value is None: # get
2164
return dbus.UInt64(self.extended_timeout.total_seconds()
1558
return dbus.UInt64(self.extended_timeout_milliseconds())
2166
1559
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2168
1561
# Interval - property
2169
@dbus_service_property(_interface,
1562
@dbus_service_property(_interface, signature="t",
2171
1563
access="readwrite")
2172
1564
def Interval_dbus_property(self, value=None):
2173
1565
if value is None: # get
2174
return dbus.UInt64(self.interval.total_seconds() * 1000)
1566
return dbus.UInt64(self.interval_milliseconds())
2175
1567
self.interval = datetime.timedelta(0, 0, 0, value)
2176
1568
if getattr(self, "checker_initiator_tag", None) is None:
2178
1570
if self.enabled:
2179
1571
# Reschedule checker run
2180
GLib.source_remove(self.checker_initiator_tag)
2181
self.checker_initiator_tag = GLib.timeout_add(
2182
value, self.start_checker)
2183
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
2185
1577
# Checker - property
2186
@dbus_service_property(_interface,
1578
@dbus_service_property(_interface, signature="s",
2188
1579
access="readwrite")
2189
1580
def Checker_dbus_property(self, value=None):
2190
1581
if value is None: # get
2191
1582
return dbus.String(self.checker_command)
2192
self.checker_command = str(value)
1583
self.checker_command = unicode(value)
2194
1585
# CheckerRunning - property
2195
@dbus_service_property(_interface,
1586
@dbus_service_property(_interface, signature="b",
2197
1587
access="readwrite")
2198
1588
def CheckerRunning_dbus_property(self, value=None):
2199
1589
if value is None: # get
2256
1636
class ClientHandler(socketserver.BaseRequestHandler, object):
2257
1637
"""A class to handle client connections.
2259
1639
Instantiated once for each connection to handle it.
2260
1640
Note: This will run in its own forked process."""
2262
1642
def handle(self):
2263
1643
with contextlib.closing(self.server.child_pipe) as child_pipe:
2264
1644
logger.info("TCP connection from: %s",
2265
str(self.client_address))
1645
unicode(self.client_address))
2266
1646
logger.debug("Pipe FD: %d",
2267
1647
self.server.child_pipe.fileno())
2269
session = gnutls.ClientSession(self.request)
2271
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2272
# "+AES-256-CBC", "+SHA1",
2273
# "+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",
2275
1663
# Use a fallback default, since this MUST be set.
2276
1664
priority = self.server.gnutls_priority
2277
1665
if priority is None:
2278
1666
priority = "NORMAL"
2279
gnutls.priority_set_direct(session._c_object,
2280
priority.encode("utf-8"),
1667
(gnutls.library.functions
1668
.gnutls_priority_set_direct(session._c_object,
2283
1671
# Start communication using the Mandos protocol
2284
1672
# Get protocol number
2285
1673
line = self.request.makefile().readline()
2286
1674
logger.debug("Protocol version: %r", line)
2288
1676
if int(line.strip().split()[0]) > 1:
2289
raise RuntimeError(line)
2290
1678
except (ValueError, IndexError, RuntimeError) as error:
2291
1679
logger.error("Unknown protocol version: %s", error)
2294
1682
# Start GnuTLS connection
2296
1684
session.handshake()
2297
except gnutls.Error as error:
1685
except gnutls.errors.GNUTLSError as error:
2298
1686
logger.warning("Handshake failed: %s", error)
2299
1687
# Do not run session.bye() here: the session is not
2300
1688
# established. Just abandon the request.
2302
1690
logger.debug("Handshake succeeded")
2304
1692
approval_required = False
2306
if gnutls.has_rawpk:
2309
key_id = self.key_id(
2310
self.peer_certificate(session))
2311
except (TypeError, gnutls.Error) as error:
2312
logger.warning("Bad certificate: %s", error)
2314
logger.debug("Key ID: %s", key_id)
2319
fpr = self.fingerprint(
2320
self.peer_certificate(session))
2321
except (TypeError, gnutls.Error) as error:
2322
logger.warning("Bad certificate: %s", error)
2324
logger.debug("Fingerprint: %s", fpr)
2327
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,
2328
1705
self.client_address)
2329
1706
except KeyError:
2332
1709
if client.approval_delay:
2333
1710
delay = client.approval_delay
2334
1711
client.approvals_pending += 1
2335
1712
approval_required = True
2338
1715
if not client.enabled:
2339
1716
logger.info("Client %s is disabled",
2341
1718
if self.server.use_dbus:
2342
1719
# Emit D-Bus signal
2343
1720
client.Rejected("Disabled")
2346
1723
if client.approved or not client.approval_delay:
2347
# We are approved or approval is disabled
1724
#We are approved or approval is disabled
2349
1726
elif client.approved is None:
2350
1727
logger.info("Client %s needs approval",
2383
1762
delay -= time2 - time
2386
session.send(client.secret)
2387
except gnutls.Error as error:
2388
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))
2392
1777
logger.info("Sending secret to %s", client.name)
2393
1778
# bump the timeout using extended_timeout
2394
1779
client.bump_timeout(client.extended_timeout)
2395
1780
if self.server.use_dbus:
2396
1781
# Emit D-Bus signal
2397
1782
client.GotSecret()
2400
1785
if approval_required:
2401
1786
client.approvals_pending -= 1
2404
except gnutls.Error as error:
1789
except gnutls.errors.GNUTLSError as error:
2405
1790
logger.warning("GnuTLS bye failed",
2406
1791
exc_info=error)
2409
1794
def peer_certificate(session):
2410
"Return the peer's certificate as a bytestring"
2412
cert_type = gnutls.certificate_type_get2(session._c_object,
2414
except AttributeError:
2415
cert_type = gnutls.certificate_type_get(session._c_object)
2416
if gnutls.has_rawpk:
2417
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2419
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2420
# If not a valid certificate type...
2421
if cert_type not in valid_cert_types:
2422
logger.info("Cert type %r not in %r", cert_type,
2424
# ...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
2426
1802
list_size = ctypes.c_uint(1)
2427
cert_list = (gnutls.certificate_get_peers
1803
cert_list = (gnutls.library.functions
1804
.gnutls_certificate_get_peers
2428
1805
(session._c_object, ctypes.byref(list_size)))
2429
1806
if not bool(cert_list) and list_size.value != 0:
2430
raise gnutls.Error("error getting peer certificate")
1807
raise gnutls.errors.GNUTLSError("error getting peer"
2431
1809
if list_size.value == 0:
2433
1811
cert = cert_list[0]
2434
1812
return ctypes.string_at(cert.data, cert.size)
2437
def key_id(certificate):
2438
"Convert a certificate bytestring to a hexdigit key ID"
2439
# New GnuTLS "datum" with the public key
2440
datum = gnutls.datum_t(
2441
ctypes.cast(ctypes.c_char_p(certificate),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.c_uint(len(certificate)))
2444
# XXX all these need to be created in the gnutls "module"
2445
# New empty GnuTLS certificate
2446
pubkey = gnutls.pubkey_t()
2447
gnutls.pubkey_init(ctypes.byref(pubkey))
2448
# Import the raw public key into the certificate
2449
gnutls.pubkey_import(pubkey,
2450
ctypes.byref(datum),
2451
gnutls.X509_FMT_DER)
2452
# New buffer for the key ID
2453
buf = ctypes.create_string_buffer(32)
2454
buf_len = ctypes.c_size_t(len(buf))
2455
# Get the key ID from the raw public key into the buffer
2456
gnutls.pubkey_get_key_id(pubkey,
2457
gnutls.KEYID_USE_SHA256,
2458
ctypes.cast(ctypes.byref(buf),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.byref(buf_len))
2461
# Deinit the certificate
2462
gnutls.pubkey_deinit(pubkey)
2464
# Convert the buffer to a Python bytestring
2465
key_id = ctypes.string_at(buf, buf_len.value)
2466
# Convert the bytestring to hexadecimal notation
2467
hex_key_id = binascii.hexlify(key_id).upper()
2471
1815
def fingerprint(openpgp):
2472
1816
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2473
1817
# New GnuTLS "datum" with the OpenPGP public key
2474
datum = gnutls.datum_t(
2475
ctypes.cast(ctypes.c_char_p(openpgp),
2476
ctypes.POINTER(ctypes.c_ubyte)),
2477
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))))
2478
1823
# New empty GnuTLS certificate
2479
crt = gnutls.openpgp_crt_t()
2480
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)))
2481
1827
# Import the OpenPGP public key into the certificate
2482
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2483
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))
2484
1832
# Verify the self signature in the key
2485
1833
crtverify = ctypes.c_uint()
2486
gnutls.openpgp_crt_verify_self(crt, 0,
2487
ctypes.byref(crtverify))
1834
(gnutls.library.functions
1835
.gnutls_openpgp_crt_verify_self(crt, 0,
1836
ctypes.byref(crtverify)))
2488
1837
if crtverify.value != 0:
2489
gnutls.openpgp_crt_deinit(crt)
2490
raise gnutls.CertificateSecurityError(code
1838
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1839
raise (gnutls.errors.CertificateSecurityError
2492
1841
# New buffer for the fingerprint
2493
1842
buf = ctypes.create_string_buffer(20)
2494
1843
buf_len = ctypes.c_size_t()
2495
1844
# Get the fingerprint from the certificate into the buffer
2496
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2497
ctypes.byref(buf_len))
1845
(gnutls.library.functions
1846
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1847
ctypes.byref(buf_len)))
2498
1848
# Deinit the certificate
2499
gnutls.openpgp_crt_deinit(crt)
1849
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2500
1850
# Convert the buffer to a Python bytestring
2501
1851
fpr = ctypes.string_at(buf, buf_len.value)
2502
1852
# Convert the bytestring to hexadecimal notation
2591
1935
# socket_wrapper(), if socketfd was set.
2592
1936
socketserver.TCPServer.__init__(self, server_address,
2593
1937
RequestHandlerClass)
2595
1939
def server_bind(self):
2596
1940
"""This overrides the normal server_bind() function
2597
1941
to bind to an interface if one was specified, and also NOT to
2598
1942
bind to an address or port if they were not specified."""
2599
global SO_BINDTODEVICE
2600
1943
if self.interface is not None:
2601
1944
if SO_BINDTODEVICE is None:
2602
# Fall back to a hard-coded value which seems to be
2604
logger.warning("SO_BINDTODEVICE not found, trying 25")
2605
SO_BINDTODEVICE = 25
2607
self.socket.setsockopt(
2608
socket.SOL_SOCKET, SO_BINDTODEVICE,
2609
(self.interface + "\0").encode("utf-8"))
2610
except socket.error as error:
2611
if error.errno == errno.EPERM:
2612
logger.error("No permission to bind to"
2613
" interface %s", self.interface)
2614
elif error.errno == errno.ENOPROTOOPT:
2615
logger.error("SO_BINDTODEVICE not available;"
2616
" cannot bind to interface %s",
2618
elif error.errno == errno.ENODEV:
2619
logger.error("Interface %s does not exist,"
2620
" 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)
2623
1966
# Only bind(2) the socket if we really need to.
2624
1967
if self.server_address[0] or self.server_address[1]:
2625
if self.server_address[1]:
2626
self.allow_reuse_address = True
2627
1968
if not self.server_address[0]:
2628
1969
if self.address_family == socket.AF_INET6:
2629
any_address = "::" # in6addr_any
1970
any_address = "::" # in6addr_any
2631
any_address = "0.0.0.0" # INADDR_ANY
1972
any_address = socket.INADDR_ANY
2632
1973
self.server_address = (any_address,
2633
1974
self.server_address[1])
2634
1975
elif not self.server_address[1]:
2635
self.server_address = (self.server_address[0], 0)
1976
self.server_address = (self.server_address[0],
2636
1978
# if self.interface:
2637
1979
# self.server_address = (self.server_address[0],
2668
2005
self.gnutls_priority = gnutls_priority
2669
2006
IPv6_TCPServer.__init__(self, server_address,
2670
2007
RequestHandlerClass,
2671
interface=interface,
2008
interface = interface,
2009
use_ipv6 = use_ipv6,
2010
socketfd = socketfd)
2675
2011
def server_activate(self):
2676
2012
if self.enabled:
2677
2013
return socketserver.TCPServer.server_activate(self)
2679
2015
def enable(self):
2680
2016
self.enabled = True
2682
2018
def add_pipe(self, parent_pipe, proc):
2683
2019
# Call "handle_ipc" for both data and EOF events
2685
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2686
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2687
functools.partial(self.handle_ipc,
2688
parent_pipe=parent_pipe,
2691
def handle_ipc(self, source, condition,
2694
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):
2695
2029
# error, or the other end of multiprocessing.Pipe has closed
2696
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2030
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2697
2031
# Wait for other process to exit
2701
2035
# Read a request from the child
2702
2036
request = parent_pipe.recv()
2703
2037
command = request[0]
2705
2039
if command == 'init':
2706
key_id = request[1].decode("ascii")
2707
fpr = request[2].decode("ascii")
2708
address = request[3]
2710
for c in self.clients.values():
2711
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2713
if key_id and c.key_id == key_id:
2716
if fpr and c.fingerprint == fpr:
2041
address = request[2]
2043
for c in self.clients.itervalues():
2044
if c.fingerprint == fpr:
2720
logger.info("Client not found for key ID: %s, address"
2721
": %s", key_id or fpr, address)
2048
logger.info("Client not found for fingerprint: %s, ad"
2049
"dress: %s", fpr, address)
2722
2050
if self.use_dbus:
2723
2051
# Emit D-Bus signal
2724
mandos_dbus_service.ClientNotFound(key_id or fpr,
2052
mandos_dbus_service.ClientNotFound(fpr,
2726
2054
parent_pipe.send(False)
2730
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2731
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2732
functools.partial(self.handle_ipc,
2733
parent_pipe=parent_pipe,
2735
client_object=client))
2057
gobject.io_add_watch(parent_pipe.fileno(),
2058
gobject.IO_IN | gobject.IO_HUP,
2059
functools.partial(self.handle_ipc,
2736
2065
parent_pipe.send(True)
2737
2066
# remove the old hook in favor of the new above hook on
2741
2070
funcname = request[1]
2742
2071
args = request[2]
2743
2072
kwargs = request[3]
2745
2074
parent_pipe.send(('data', getattr(client_object,
2746
2075
funcname)(*args,
2749
2078
if command == 'getattr':
2750
2079
attrname = request[1]
2751
if isinstance(client_object.__getattribute__(attrname),
2752
collections.Callable):
2753
parent_pipe.send(('function', ))
2080
if callable(client_object.__getattribute__(attrname)):
2081
parent_pipe.send(('function',))
2756
'data', client_object.__getattribute__(attrname)))
2083
parent_pipe.send(('data', client_object
2084
.__getattribute__(attrname)))
2758
2086
if command == 'setattr':
2759
2087
attrname = request[1]
2760
2088
value = request[2]
2761
2089
setattr(client_object, attrname, value)
2766
2094
def rfc3339_duration_to_delta(duration):
2767
2095
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2769
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2771
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2773
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2775
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2777
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2779
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2781
>>> 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)
2785
2113
# Parsing an RFC 3339 duration with regular expressions is not
2786
2114
# possible - there would have to be multiple places for the same
2787
2115
# values, like seconds. The current code, while more esoteric, is
2788
2116
# cleaner without depending on a parsing library. If Python had a
2789
2117
# built-in library for parsing we would use it, but we'd like to
2790
2118
# avoid excessive use of external libraries.
2792
2120
# New type for defining tokens, syntax, and semantics all-in-one
2793
Token = collections.namedtuple("Token", (
2794
"regexp", # To match token; if "value" is not None, must have
2795
# a "group" containing digits
2796
"value", # datetime.timedelta or None
2797
"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
2798
2130
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2799
2131
# the "duration" ABNF definition in RFC 3339, Appendix A.
2800
2132
token_end = Token(re.compile(r"$"), None, frozenset())
2801
2133
token_second = Token(re.compile(r"(\d+)S"),
2802
2134
datetime.timedelta(seconds=1),
2803
frozenset((token_end, )))
2135
frozenset((token_end,)))
2804
2136
token_minute = Token(re.compile(r"(\d+)M"),
2805
2137
datetime.timedelta(minutes=1),
2806
2138
frozenset((token_second, token_end)))
2965
2294
parser.add_argument("--no-dbus", action="store_false",
2966
2295
dest="use_dbus", help="Do not provide D-Bus"
2967
" system bus interface", default=None)
2296
" system bus interface")
2968
2297
parser.add_argument("--no-ipv6", action="store_false",
2969
dest="use_ipv6", help="Do not use IPv6",
2298
dest="use_ipv6", help="Do not use IPv6")
2971
2299
parser.add_argument("--no-restore", action="store_false",
2972
2300
dest="restore", help="Do not restore stored"
2973
" state", default=None)
2974
2302
parser.add_argument("--socket", type=int,
2975
2303
help="Specify a file descriptor to a network"
2976
2304
" socket to use instead of creating one")
2977
2305
parser.add_argument("--statedir", metavar="DIR",
2978
2306
help="Directory to save/restore state in")
2979
2307
parser.add_argument("--foreground", action="store_true",
2980
help="Run in foreground", default=None)
2981
parser.add_argument("--no-zeroconf", action="store_false",
2982
dest="zeroconf", help="Do not use Zeroconf",
2308
help="Run in foreground")
2985
2310
options = parser.parse_args()
2987
2317
# Default values for config file for server-global settings
2988
if gnutls.has_rawpk:
2989
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2990
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2992
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2993
":+SIGN-DSA-SHA256")
2994
server_defaults = {"interface": "",
2998
"priority": priority,
2999
"servicename": "Mandos",
3005
"statedir": "/var/lib/mandos",
3006
"foreground": "False",
2318
server_defaults = { "interface": "",
2323
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2324
"servicename": "Mandos",
2330
"statedir": "/var/lib/mandos",
2331
"foreground": "False",
3011
2334
# Parse config file for server-global settings
3012
server_config = configparser.ConfigParser(server_defaults)
2335
server_config = configparser.SafeConfigParser(server_defaults)
3013
2336
del server_defaults
3014
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3015
# Convert the ConfigParser object to a dict
2337
server_config.read(os.path.join(options.configdir,
2339
# Convert the SafeConfigParser object to a dict
3016
2340
server_settings = server_config.defaults()
3017
2341
# Use the appropriate methods on the non-string config options
3018
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3019
"foreground", "zeroconf"):
2342
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3020
2343
server_settings[option] = server_config.getboolean("DEFAULT",
3022
2345
if server_settings["port"]:
3138
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3140
2447
except OSError as error:
3141
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3142
.format(uid, gid, os.strerror(error.errno)))
3143
2448
if error.errno != errno.EPERM:
3147
2452
# Enable all possible GnuTLS debugging
3149
2454
# "Use a log level over 10 to enable all debugging options."
3150
2455
# - GnuTLS manual
3151
gnutls.global_set_log_level(11)
2456
gnutls.library.functions.gnutls_global_set_log_level(11)
2458
@gnutls.library.types.gnutls_log_func
3154
2459
def debug_gnutls(level, string):
3155
2460
logger.debug("GnuTLS: %s", string[:-1])
3157
gnutls.global_set_log_function(debug_gnutls)
2462
(gnutls.library.functions
2463
.gnutls_global_set_log_function(debug_gnutls))
3159
2465
# Redirect stdin so all checkers get /dev/null
3160
2466
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3161
2467
os.dup2(null, sys.stdin.fileno())
3165
2471
# Need to fork before connecting to D-Bus
3166
2472
if not foreground:
3167
2473
# Close all input and output, do double fork, etc.
3170
if gi.version_info < (3, 10, 2):
3171
# multiprocessing will use threads, so before we use GLib we
3172
# 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()
3175
2480
global main_loop
3176
2481
# From the Avahi example code
3177
2482
DBusGMainLoop(set_as_default=True)
3178
main_loop = GLib.MainLoop()
2483
main_loop = gobject.MainLoop()
3179
2484
bus = dbus.SystemBus()
3180
2485
# End of Avahi example code
3183
2488
bus_name = dbus.service.BusName("se.recompile.Mandos",
3186
old_bus_name = dbus.service.BusName(
3187
"se.bsnet.fukt.Mandos", bus,
3189
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:
3190
2494
logger.error("Disabling D-Bus:", exc_info=e)
3191
2495
use_dbus = False
3192
2496
server_settings["use_dbus"] = False
3193
2497
tcp_server.use_dbus = False
3195
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3196
service = AvahiServiceToSyslog(
3197
name=server_settings["servicename"],
3198
servicetype="_mandos._tcp",
3201
if server_settings["interface"]:
3202
service.interface = if_nametoindex(
3203
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"])))
3205
2507
global multiprocessing_manager
3206
2508
multiprocessing_manager = multiprocessing.Manager()
3208
2510
client_class = Client
3210
client_class = functools.partial(ClientDBus, bus=bus)
2512
client_class = functools.partial(ClientDBus, bus = bus)
3212
2514
client_settings = Client.config_parser(client_config)
3213
2515
old_client_settings = {}
3214
2516
clients_data = {}
3216
# This is used to redirect stdout and stderr for checker processes
3218
wnull = open(os.devnull, "w") # A writable /dev/null
3219
# Only used if server is running in foreground but not in debug
3221
if debug or not foreground:
3224
2518
# Get client data and settings from last running state.
3225
2519
if server_settings["restore"]:
3227
2521
with open(stored_state_path, "rb") as stored_state:
3228
if sys.version_info.major == 2:
3229
clients_data, old_client_settings = pickle.load(
3232
bytes_clients_data, bytes_old_client_settings = (
3233
pickle.load(stored_state, encoding="bytes"))
3234
# Fix bytes to strings
3237
clients_data = {(key.decode("utf-8")
3238
if isinstance(key, bytes)
3241
bytes_clients_data.items()}
3242
del bytes_clients_data
3243
for key in clients_data:
3244
value = {(k.decode("utf-8")
3245
if isinstance(k, bytes) else k): v
3247
clients_data[key].items()}
3248
clients_data[key] = value
3250
value["client_structure"] = [
3252
if isinstance(s, bytes)
3254
value["client_structure"]]
3255
# .name, .host, and .checker_command
3256
for k in ("name", "host", "checker_command"):
3257
if isinstance(value[k], bytes):
3258
value[k] = value[k].decode("utf-8")
3259
if "key_id" not in value:
3260
value["key_id"] = ""
3261
elif "fingerprint" not in value:
3262
value["fingerprint"] = ""
3263
# old_client_settings
3265
old_client_settings = {
3266
(key.decode("utf-8")
3267
if isinstance(key, bytes)
3270
bytes_old_client_settings.items()}
3271
del bytes_old_client_settings
3272
# .host and .checker_command
3273
for value in old_client_settings.values():
3274
for attribute in ("host", "checker_command"):
3275
if isinstance(value[attribute], bytes):
3276
value[attribute] = (value[attribute]
2522
clients_data, old_client_settings = (pickle.load
3278
2524
os.remove(stored_state_path)
3279
2525
except IOError as e:
3280
2526
if e.errno == errno.ENOENT:
3281
logger.warning("Could not load persistent state:"
3282
" {}".format(os.strerror(e.errno)))
2527
logger.warning("Could not load persistent state: {0}"
2528
.format(os.strerror(e.errno)))
3284
2530
logger.critical("Could not load persistent state:",
3287
2533
except EOFError as e:
3288
2534
logger.warning("Could not load persistent state: "
2535
"EOFError:", exc_info=e)
3292
2537
with PGPEngine() as pgp:
3293
for client_name, client in clients_data.items():
3294
# Skip removed clients
3295
if client_name not in client_settings:
2538
for client_name, client in clients_data.iteritems():
3298
2539
# Decide which value to use after restoring saved state.
3299
2540
# We have three different values: Old config file,
3300
2541
# new config file, and saved state.
3358
2599
for client_name in (set(client_settings)
3359
2600
- set(old_client_settings)):
3360
2601
clients_data[client_name] = client_settings[client_name]
3362
2603
# Create all client objects
3363
for client_name, client in clients_data.items():
2604
for client_name, client in clients_data.iteritems():
3364
2605
tcp_server.clients[client_name] = client_class(
3367
server_settings=server_settings)
2606
name = client_name, settings = client)
3369
2608
if not tcp_server.clients:
3370
2609
logger.warning("No clients defined")
3372
2611
if not foreground:
3373
2612
if pidfile is not None:
3377
print(pid, file=pidfile)
2616
pidfile.write(str(pid) + "\n".encode("utf-8"))
3378
2617
except IOError:
3379
2618
logger.error("Could not write to file %r with PID %d",
3380
2619
pidfilename, pid)
3382
2621
del pidfilename
3384
for termsig in (signal.SIGHUP, signal.SIGTERM):
3385
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3386
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())
3390
@alternate_dbus_interfaces(
3391
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3392
class MandosDBusService(DBusObjectWithObjectManager):
2627
@alternate_dbus_interfaces({"se.recompile.Mandos":
2628
"se.bsnet.fukt.Mandos"})
2629
class MandosDBusService(DBusObjectWithProperties):
3393
2630
"""A D-Bus proxy object"""
3395
2631
def __init__(self):
3396
2632
dbus.service.Object.__init__(self, bus, "/")
3398
2633
_interface = "se.recompile.Mandos"
2635
@dbus_interface_annotations(_interface)
2637
return { "org.freedesktop.DBus.Property"
2638
".EmitsChangedSignal":
3400
2641
@dbus.service.signal(_interface, signature="o")
3401
2642
def ClientAdded(self, objpath):
3405
2646
@dbus.service.signal(_interface, signature="ss")
3406
def ClientNotFound(self, key_id, address):
2647
def ClientNotFound(self, fingerprint, address):
3410
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3412
2651
@dbus.service.signal(_interface, signature="os")
3413
2652
def ClientRemoved(self, objpath, name):
3417
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3419
2656
@dbus.service.method(_interface, out_signature="ao")
3420
2657
def GetAllClients(self):
3422
return dbus.Array(c.dbus_object_path for c in
3423
tcp_server.clients.values())
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2659
return dbus.Array(c.dbus_object_path
2661
tcp_server.clients.itervalues())
3427
2663
@dbus.service.method(_interface,
3428
2664
out_signature="a{oa{sv}}")
3429
2665
def GetAllClientsWithProperties(self):
3431
2667
return dbus.Dictionary(
3432
{c.dbus_object_path: c.GetAll(
3433
"se.recompile.Mandos.Client")
3434
for c in tcp_server.clients.values()},
2668
((c.dbus_object_path, c.GetAll(""))
2669
for c in tcp_server.clients.itervalues()),
3435
2670
signature="oa{sv}")
3437
2672
@dbus.service.method(_interface, in_signature="o")
3438
2673
def RemoveClient(self, object_path):
3440
for c in tcp_server.clients.values():
2675
for c in tcp_server.clients.itervalues():
3441
2676
if c.dbus_object_path == object_path:
3442
2677
del tcp_server.clients[c.name]
3443
2678
c.remove_from_connection()
3444
# Don't signal the disabling
2679
# Don't signal anything except ClientRemoved
3445
2680
c.disable(quiet=True)
3446
# Emit D-Bus signal for removal
3447
self.client_removed_signal(c)
2682
self.ClientRemoved(object_path, c.name)
3449
2684
raise KeyError(object_path)
3453
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3454
out_signature="a{oa{sa{sv}}}")
3455
def GetManagedObjects(self):
3457
return dbus.Dictionary(
3458
{client.dbus_object_path:
3460
{interface: client.GetAll(interface)
3462
client._get_all_interface_names()})
3463
for client in tcp_server.clients.values()})
3465
def client_added_signal(self, client):
3466
"""Send the new standard signal and the old signal"""
3468
# New standard signal
3469
self.InterfacesAdded(
3470
client.dbus_object_path,
3472
{interface: client.GetAll(interface)
3474
client._get_all_interface_names()}))
3476
self.ClientAdded(client.dbus_object_path)
3478
def client_removed_signal(self, client):
3479
"""Send the new standard signal and the old signal"""
3481
# New standard signal
3482
self.InterfacesRemoved(
3483
client.dbus_object_path,
3484
client._get_all_interface_names())
3486
self.ClientRemoved(client.dbus_object_path,
3489
2688
mandos_dbus_service = MandosDBusService()
3491
# Save modules to variables to exempt the modules from being
3492
# unloaded before the function registered with atexit() is run.
3493
mp = multiprocessing
3497
2691
"Cleanup function; run on exit"
3501
mp.active_children()
2694
multiprocessing.active_children()
3503
2695
if not (tcp_server.clients or client_settings):
3506
2698
# Store client before exiting. Secrets are encrypted with key
3507
2699
# based on what config file has. If config file is
3508
2700
# removed/edited, old secret will thus be unrecovable.
3510
2702
with PGPEngine() as pgp:
3511
for client in tcp_server.clients.values():
2703
for client in tcp_server.clients.itervalues():
3512
2704
key = client_settings[client.name]["secret"]
3513
2705
client.encrypted_secret = pgp.encrypt(client.secret,
3515
2707
client_dict = {}
3517
2709
# A list of attributes that can not be pickled
3519
exclude = {"bus", "changedstate", "secret",
3520
"checker", "server_settings"}
3521
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)):
3523
2715
exclude.add(name)
3525
2717
client_dict["encrypted_secret"] = (client
3526
2718
.encrypted_secret)
3527
2719
for attr in client.client_structure:
3528
2720
if attr not in exclude:
3529
2721
client_dict[attr] = getattr(client, attr)
3531
2723
clients[client.name] = client_dict
3532
2724
del client_settings[client.name]["secret"]
3535
with tempfile.NamedTemporaryFile(
3539
dir=os.path.dirname(stored_state_path),
3540
delete=False) as stored_state:
3541
pickle.dump((clients, client_settings), stored_state,
3543
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
3544
2733
os.rename(tempname, stored_state_path)
3545
2734
except (IOError, OSError) as e: