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 -*-
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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
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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".
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13
# Everything else is
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# Copyright © 2008-2019 Teddy Hogeborn
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# Copyright © 2008-2019 Björn Påhlsson
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# This file is part of Mandos.
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# Mandos is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by
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# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
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# 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.
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# 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,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
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# 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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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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import multiprocessing
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import dbus.service
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from gi.repository import GLib
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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
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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:
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85
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
106
86
except AttributeError:
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# This is where SO_BINDTODEVICE was up to and including Python
110
88
from IN import SO_BINDTODEVICE
111
89
except ImportError:
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# In Python 2.7 it seems to have been removed entirely.
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# 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 < (3, 2):
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configparser.Configparser = configparser.SafeConfigParser
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SO_BINDTODEVICE = None
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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
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(ctypes.util.find_library("c"))
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except (OSError, AttributeError):
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def if_nametoindex(interface):
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"Get an interface index the hard way, i.e. using fcntl()"
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SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
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with contextlib.closing(socket.socket()) as s:
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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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return interface_index
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def copy_function(func):
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"""Make a copy of a function"""
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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__,
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def initlogger(debug, level=logging.WARNING):
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"""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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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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def password_encode(self, password):
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# Passphrase can not be empty and can not contain newlines or
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# NUL bytes. So we prefix it and hex encode it.
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encoded = b"mandos" + binascii.hexlify(password)
245
if len(encoded) > 2048:
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# GnuPG can't handle long passwords, so encode differently
247
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
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.replace(b"\n", b"\\n")
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.replace(b"\0", b"\\x00"))
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return b"mandos" + binascii.hexlify(password)
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def encrypt(self, data, password):
253
passphrase = self.password_encode(password)
254
with tempfile.NamedTemporaryFile(
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dir=self.tempdir) as passfile:
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passfile.write(passphrase)
258
proc = subprocess.Popen([self.gpg, '--symmetric',
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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ciphertext, err = proc.communicate(input=data)
266
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:
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ciphertext = f.read()
194
self.gnupg.passphrase = None
268
195
return ciphertext
270
197
def decrypt(self, data, password):
271
passphrase = self.password_encode(password)
272
with tempfile.NamedTemporaryFile(
273
dir=self.tempdir) as passfile:
274
passfile.write(passphrase)
276
proc = subprocess.Popen([self.gpg, '--decrypt',
280
stdin=subprocess.PIPE,
281
stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
283
decrypted_plaintext, err = proc.communicate(input=data)
284
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
286
212
return decrypted_plaintext
289
# Pretend that we have an Avahi module
291
"""This isn't so much a class as it is a module-like namespace."""
292
IF_UNSPEC = -1 # avahi-common/address.h
293
PROTO_UNSPEC = -1 # avahi-common/address.h
294
PROTO_INET = 0 # avahi-common/address.h
295
PROTO_INET6 = 1 # avahi-common/address.h
296
DBUS_NAME = "org.freedesktop.Avahi"
297
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
298
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
299
DBUS_PATH_SERVER = "/"
302
def string_array_to_txt_array(t):
303
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
304
for s in t), signature="ay")
305
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
306
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
307
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
308
SERVER_INVALID = 0 # avahi-common/defs.h
309
SERVER_REGISTERING = 1 # avahi-common/defs.h
310
SERVER_RUNNING = 2 # avahi-common/defs.h
311
SERVER_COLLISION = 3 # avahi-common/defs.h
312
SERVER_FAILURE = 4 # avahi-common/defs.h
315
215
class AvahiError(Exception):
316
216
def __init__(self, value, *args, **kwargs):
317
217
self.value = value
318
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))
322
222
class AvahiServiceError(AvahiError):
326
225
class AvahiGroupError(AvahiError):
229
class AvahiService(object):
331
230
"""An Avahi (Zeroconf) service.
334
233
interface: integer; avahi.IF_UNSPEC or an interface index.
335
234
Used to optionally bind to the specified interface.
336
235
name: string; Example: 'Mandos'
337
236
type: string; Example: '_mandos._tcp'.
338
See <https://www.iana.org/assignments/service-names-port-numbers>
237
See <http://www.dns-sd.org/ServiceTypes.html>
339
238
port: integer; what port to announce
340
239
TXT: list of strings; TXT record for the service
341
240
domain: string; Domain to publish on, default to .local if empty.
500
377
follow_name_owner_changes=True),
501
378
avahi.DBUS_INTERFACE_SERVER)
502
379
self.server.connect_to_signal("StateChanged",
503
self.server_state_changed)
380
self.server_state_changed)
504
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self.server_state_changed(self.server.GetState())
507
384
class AvahiServiceToSyslog(AvahiService):
508
def rename(self, *args, **kwargs):
509
386
"""Add the new name to the syslog messages"""
510
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
511
syslogger.setFormatter(logging.Formatter(
512
'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'
517
# Pretend that we have a GnuTLS module
519
"""This isn't so much a class as it is a module-like namespace."""
521
library = ctypes.util.find_library("gnutls")
523
library = ctypes.util.find_library("gnutls-deb0")
524
_library = ctypes.cdll.LoadLibrary(library)
527
# Unless otherwise indicated, the constants and types below are
528
# all from the gnutls/gnutls.h C header file.
539
E_NO_CERTIFICATE_FOUND = -49
544
KEYID_USE_SHA256 = 1 # gnutls/x509.h
545
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
548
class session_int(ctypes.Structure):
550
session_t = ctypes.POINTER(session_int)
552
class certificate_credentials_st(ctypes.Structure):
554
certificate_credentials_t = ctypes.POINTER(
555
certificate_credentials_st)
556
certificate_type_t = ctypes.c_int
558
class datum_t(ctypes.Structure):
559
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
560
('size', ctypes.c_uint)]
562
class openpgp_crt_int(ctypes.Structure):
564
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
565
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
566
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
567
credentials_type_t = ctypes.c_int
568
transport_ptr_t = ctypes.c_void_p
569
close_request_t = ctypes.c_int
572
class Error(Exception):
573
def __init__(self, message=None, code=None, args=()):
574
# Default usage is by a message string, but if a return
575
# code is passed, convert it to a string with
578
if message is None and code is not None:
579
message = gnutls.strerror(code)
580
return super(gnutls.Error, self).__init__(
583
class CertificateSecurityError(Error):
589
self._c_object = gnutls.certificate_credentials_t()
590
gnutls.certificate_allocate_credentials(
591
ctypes.byref(self._c_object))
592
self.type = gnutls.CRD_CERTIFICATE
595
gnutls.certificate_free_credentials(self._c_object)
598
def __init__(self, socket, credentials=None):
599
self._c_object = gnutls.session_t()
600
gnutls_flags = gnutls.CLIENT
601
if gnutls.check_version(b"3.5.6"):
602
gnutls_flags |= gnutls.NO_TICKETS
604
gnutls_flags |= gnutls.ENABLE_RAWPK
605
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
607
gnutls.set_default_priority(self._c_object)
608
gnutls.transport_set_ptr(self._c_object, socket.fileno())
609
gnutls.handshake_set_private_extensions(self._c_object,
612
if credentials is None:
613
credentials = gnutls.Credentials()
614
gnutls.credentials_set(self._c_object, credentials.type,
615
ctypes.cast(credentials._c_object,
617
self.credentials = credentials
620
gnutls.deinit(self._c_object)
623
return gnutls.handshake(self._c_object)
625
def send(self, data):
629
data_len -= gnutls.record_send(self._c_object,
634
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
636
# Error handling functions
637
def _error_code(result):
638
"""A function to raise exceptions on errors, suitable
639
for the 'restype' attribute on ctypes functions"""
642
if result == gnutls.E_NO_CERTIFICATE_FOUND:
643
raise gnutls.CertificateSecurityError(code=result)
644
raise gnutls.Error(code=result)
646
def _retry_on_error(result, func, arguments):
647
"""A function to retry on some errors, suitable
648
for the 'errcheck' attribute on ctypes functions"""
650
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
651
return _error_code(result)
652
result = func(*arguments)
655
# Unless otherwise indicated, the function declarations below are
656
# all from the gnutls/gnutls.h C header file.
659
priority_set_direct = _library.gnutls_priority_set_direct
660
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
661
ctypes.POINTER(ctypes.c_char_p)]
662
priority_set_direct.restype = _error_code
664
init = _library.gnutls_init
665
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
666
init.restype = _error_code
668
set_default_priority = _library.gnutls_set_default_priority
669
set_default_priority.argtypes = [session_t]
670
set_default_priority.restype = _error_code
672
record_send = _library.gnutls_record_send
673
record_send.argtypes = [session_t, ctypes.c_void_p,
675
record_send.restype = ctypes.c_ssize_t
676
record_send.errcheck = _retry_on_error
678
certificate_allocate_credentials = (
679
_library.gnutls_certificate_allocate_credentials)
680
certificate_allocate_credentials.argtypes = [
681
ctypes.POINTER(certificate_credentials_t)]
682
certificate_allocate_credentials.restype = _error_code
684
certificate_free_credentials = (
685
_library.gnutls_certificate_free_credentials)
686
certificate_free_credentials.argtypes = [
687
certificate_credentials_t]
688
certificate_free_credentials.restype = None
690
handshake_set_private_extensions = (
691
_library.gnutls_handshake_set_private_extensions)
692
handshake_set_private_extensions.argtypes = [session_t,
694
handshake_set_private_extensions.restype = None
696
credentials_set = _library.gnutls_credentials_set
697
credentials_set.argtypes = [session_t, credentials_type_t,
699
credentials_set.restype = _error_code
701
strerror = _library.gnutls_strerror
702
strerror.argtypes = [ctypes.c_int]
703
strerror.restype = ctypes.c_char_p
705
certificate_type_get = _library.gnutls_certificate_type_get
706
certificate_type_get.argtypes = [session_t]
707
certificate_type_get.restype = _error_code
709
certificate_get_peers = _library.gnutls_certificate_get_peers
710
certificate_get_peers.argtypes = [session_t,
711
ctypes.POINTER(ctypes.c_uint)]
712
certificate_get_peers.restype = ctypes.POINTER(datum_t)
714
global_set_log_level = _library.gnutls_global_set_log_level
715
global_set_log_level.argtypes = [ctypes.c_int]
716
global_set_log_level.restype = None
718
global_set_log_function = _library.gnutls_global_set_log_function
719
global_set_log_function.argtypes = [log_func]
720
global_set_log_function.restype = None
722
deinit = _library.gnutls_deinit
723
deinit.argtypes = [session_t]
724
deinit.restype = None
726
handshake = _library.gnutls_handshake
727
handshake.argtypes = [session_t]
728
handshake.restype = _error_code
729
handshake.errcheck = _retry_on_error
731
transport_set_ptr = _library.gnutls_transport_set_ptr
732
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
733
transport_set_ptr.restype = None
735
bye = _library.gnutls_bye
736
bye.argtypes = [session_t, close_request_t]
737
bye.restype = _error_code
738
bye.errcheck = _retry_on_error
740
check_version = _library.gnutls_check_version
741
check_version.argtypes = [ctypes.c_char_p]
742
check_version.restype = ctypes.c_char_p
744
_need_version = b"3.3.0"
745
if check_version(_need_version) is None:
746
raise self.Error("Needs GnuTLS {} or later"
747
.format(_need_version))
749
_tls_rawpk_version = b"3.6.6"
750
has_rawpk = bool(check_version(_tls_rawpk_version))
754
class pubkey_st(ctypes.Structure):
756
pubkey_t = ctypes.POINTER(pubkey_st)
758
x509_crt_fmt_t = ctypes.c_int
760
# All the function declarations below are from gnutls/abstract.h
761
pubkey_init = _library.gnutls_pubkey_init
762
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
763
pubkey_init.restype = _error_code
765
pubkey_import = _library.gnutls_pubkey_import
766
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
768
pubkey_import.restype = _error_code
770
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
771
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
772
ctypes.POINTER(ctypes.c_ubyte),
773
ctypes.POINTER(ctypes.c_size_t)]
774
pubkey_get_key_id.restype = _error_code
776
pubkey_deinit = _library.gnutls_pubkey_deinit
777
pubkey_deinit.argtypes = [pubkey_t]
778
pubkey_deinit.restype = None
780
# All the function declarations below are from gnutls/openpgp.h
782
openpgp_crt_init = _library.gnutls_openpgp_crt_init
783
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
784
openpgp_crt_init.restype = _error_code
786
openpgp_crt_import = _library.gnutls_openpgp_crt_import
787
openpgp_crt_import.argtypes = [openpgp_crt_t,
788
ctypes.POINTER(datum_t),
790
openpgp_crt_import.restype = _error_code
792
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
793
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
794
ctypes.POINTER(ctypes.c_uint)]
795
openpgp_crt_verify_self.restype = _error_code
797
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
798
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
799
openpgp_crt_deinit.restype = None
801
openpgp_crt_get_fingerprint = (
802
_library.gnutls_openpgp_crt_get_fingerprint)
803
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
807
openpgp_crt_get_fingerprint.restype = _error_code
809
if check_version(b"3.6.4"):
810
certificate_type_get2 = _library.gnutls_certificate_type_get2
811
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
812
certificate_type_get2.restype = _error_code
814
# Remove non-public functions
815
del _error_code, _retry_on_error
818
def call_pipe(connection, # : multiprocessing.Connection
819
func, *args, **kwargs):
820
"""This function is meant to be called by multiprocessing.Process
822
This function runs func(*args, **kwargs), and writes the resulting
823
return value on the provided multiprocessing.Connection.
825
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):
830
403
"""A representation of a client host served by this server.
833
406
approved: bool(); 'None' if not yet approved/disapproved
834
407
approval_delay: datetime.timedelta(); Time to wait for approval
835
408
approval_duration: datetime.timedelta(); Duration of one approval
836
checker: multiprocessing.Process(); a running checker process used
837
to see if the client lives. 'None' if no process is
839
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
840
413
checker_command: string; External command which is run to check
841
414
if client lives. %() expansions are done at
842
415
runtime with vars(self) as dict, so that for
843
416
instance %(name)s can be used in the command.
844
checker_initiator_tag: a GLib event source tag, or None
417
checker_initiator_tag: a gobject event source tag, or None
845
418
created: datetime.datetime(); (UTC) object creation
846
419
client_structure: Object describing what attributes a client has
847
420
and is used for storing the client at exit
848
421
current_checker_command: string; current running checker_command
849
disable_initiator_tag: a GLib event source tag, or None
422
disable_initiator_tag: a gobject event source tag, or None
851
424
fingerprint: string (40 or 32 hexadecimal digits); used to
852
uniquely identify an OpenPGP client
853
key_id: string (64 hexadecimal digits); used to uniquely identify
854
a client using raw public keys
425
uniquely identify the client
855
426
host: string; available for use by the checker command
856
427
interval: datetime.timedelta(); How often to start a new checker
857
428
last_approval_request: datetime.datetime(); (UTC) or None
1014
591
logger.info("Disabling client %s", self.name)
1015
592
if getattr(self, "disable_initiator_tag", None) is not None:
1016
GLib.source_remove(self.disable_initiator_tag)
593
gobject.source_remove(self.disable_initiator_tag)
1017
594
self.disable_initiator_tag = None
1018
595
self.expires = None
1019
596
if getattr(self, "checker_initiator_tag", None) is not None:
1020
GLib.source_remove(self.checker_initiator_tag)
597
gobject.source_remove(self.checker_initiator_tag)
1021
598
self.checker_initiator_tag = None
1022
599
self.stop_checker()
1023
600
self.enabled = False
1025
602
self.send_changedstate()
1026
# 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
1029
606
def __del__(self):
1032
609
def init_checker(self):
1033
610
# Schedule a new checker to be started an 'interval' from now,
1034
611
# and every interval from then on.
1035
612
if self.checker_initiator_tag is not None:
1036
GLib.source_remove(self.checker_initiator_tag)
1037
self.checker_initiator_tag = GLib.timeout_add(
1038
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(),
1040
617
# Schedule a disable() when 'timeout' has passed
1041
618
if self.disable_initiator_tag is not None:
1042
GLib.source_remove(self.disable_initiator_tag)
1043
self.disable_initiator_tag = GLib.timeout_add(
1044
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(),
1045
623
# Also start a new checker *right now*.
1046
624
self.start_checker()
1048
def checker_callback(self, source, condition, connection,
626
def checker_callback(self, pid, condition, command):
1050
627
"""The checker has completed, so take appropriate actions."""
1051
# Read return code from connection (see call_pipe)
1052
returncode = connection.recv()
1054
if self.checker is not None:
1056
628
self.checker_callback_tag = None
1057
629
self.checker = None
1060
self.last_checker_status = returncode
1061
self.last_checker_signal = None
630
if os.WIFEXITED(condition):
631
self.last_checker_status = os.WEXITSTATUS(condition)
1062
632
if self.last_checker_status == 0:
1063
633
logger.info("Checker for %(name)s succeeded",
1065
635
self.checked_ok()
1067
logger.info("Checker for %(name)s failed", vars(self))
637
logger.info("Checker for %(name)s failed",
1069
640
self.last_checker_status = -1
1070
self.last_checker_signal = -returncode
1071
641
logger.warning("Checker for %(name)s crashed?",
1075
644
def checked_ok(self):
1076
645
"""Assert that the client has been seen, alive and well."""
1077
646
self.last_checked_ok = datetime.datetime.utcnow()
1078
647
self.last_checker_status = 0
1079
self.last_checker_signal = None
1080
648
self.bump_timeout()
1082
650
def bump_timeout(self, timeout=None):
1083
651
"""Bump up the timeout for this client."""
1084
652
if timeout is None:
1085
653
timeout = self.timeout
1086
654
if self.disable_initiator_tag is not None:
1087
GLib.source_remove(self.disable_initiator_tag)
655
gobject.source_remove(self.disable_initiator_tag)
1088
656
self.disable_initiator_tag = None
1089
657
if getattr(self, "enabled", False):
1090
self.disable_initiator_tag = GLib.timeout_add(
1091
int(timeout.total_seconds() * 1000), self.disable)
658
self.disable_initiator_tag = (gobject.timeout_add
659
(timedelta_to_milliseconds
660
(timeout), self.disable))
1092
661
self.expires = datetime.datetime.utcnow() + timeout
1094
663
def need_approval(self):
1095
664
self.last_approval_request = datetime.datetime.utcnow()
1097
666
def start_checker(self):
1098
667
"""Start a new checker subprocess if one is not running.
1100
669
If a checker already exists, leave it running and do
1102
671
# The reason for not killing a running checker is that if we
1107
676
# checkers alone, the checker would have to take more time
1108
677
# than 'timeout' for the client to be disabled, which is as it
1111
if self.checker is not None and not self.checker.is_alive():
1112
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)
1115
693
# Start a new checker if needed
1116
694
if self.checker is None:
1117
695
# Escape attributes for the shell
1119
attr: re.escape(str(getattr(self, attr)))
1120
for attr in self.runtime_expansions}
696
escaped_attrs = dict(
697
(attr, re.escape(unicode(getattr(self, attr))))
699
self.runtime_expansions)
1122
701
command = self.checker_command % escaped_attrs
1123
702
except TypeError as error:
1124
703
logger.error('Could not format string "%s"',
1125
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",
1127
return True # Try again later
1128
self.current_checker_command = command
1129
logger.info("Starting checker %r for %s", command,
1131
# We don't need to redirect stdout and stderr, since
1132
# in normal mode, that is already done by daemon(),
1133
# and in debug mode we don't want to. (Stdin is
1134
# always replaced by /dev/null.)
1135
# The exception is when not debugging but nevertheless
1136
# running in the foreground; use the previously
1138
popen_args = {"close_fds": True,
1141
if (not self.server_settings["debug"]
1142
and self.server_settings["foreground"]):
1143
popen_args.update({"stdout": wnull,
1145
pipe = multiprocessing.Pipe(duplex=False)
1146
self.checker = multiprocessing.Process(
1148
args=(pipe[1], subprocess.call, command),
1150
self.checker.start()
1151
self.checker_callback_tag = GLib.io_add_watch(
1152
GLib.IOChannel.unix_new(pipe[0].fileno()),
1153
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1154
self.checker_callback, pipe[0], command)
1155
# 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
1158
733
def stop_checker(self):
1159
734
"""Force the checker process, if any, to stop."""
1160
735
if self.checker_callback_tag:
1161
GLib.source_remove(self.checker_callback_tag)
736
gobject.source_remove(self.checker_callback_tag)
1162
737
self.checker_callback_tag = None
1163
738
if getattr(self, "checker", None) is None:
1165
740
logger.debug("Stopping checker for %(name)s", vars(self))
1166
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
1167
749
self.checker = None
1170
def dbus_service_property(dbus_interface,
752
def dbus_service_property(dbus_interface, signature="v",
753
access="readwrite", byte_arrays=False):
1174
754
"""Decorators for marking methods of a DBusObjectWithProperties to
1175
755
become properties on the D-Bus.
1177
757
The decorated method will be called with no arguments by "Get"
1178
758
and with one argument by "Set".
1180
760
The parameters, where they are supported, are the same as
1181
761
dbus.service.method, except there is only "signature", since the
1182
762
type from Get() and the type sent to Set() is the same.
1265
class DBusObjectWithAnnotations(dbus.service.Object):
1266
"""A D-Bus object with annotations.
1268
Classes inheriting from this can use the dbus_annotations
1269
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.
1273
847
def _is_dbus_thing(thing):
1274
848
"""Returns a function testing if an attribute is a D-Bus thing
1276
850
If called like _is_dbus_thing("method") it returns a function
1277
851
suitable for use as predicate to inspect.getmembers().
1279
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
853
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1282
856
def _get_all_dbus_things(self, thing):
1283
857
"""Returns a generator of (name, attribute) pairs
1285
return ((getattr(athing.__get__(self), "_dbus_name", name),
859
return ((getattr(athing.__get__(self), "_dbus_name",
1286
861
athing.__get__(self))
1287
862
for cls in self.__class__.__mro__
1288
863
for name, athing in
1289
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1291
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1293
path_keyword='object_path',
1294
connection_keyword='connection')
1295
def Introspect(self, object_path, connection):
1296
"""Overloading of standard D-Bus method.
1298
Inserts annotation tags on methods and signals.
1300
xmlstring = dbus.service.Object.Introspect(self, object_path,
1303
document = xml.dom.minidom.parseString(xmlstring)
1305
for if_tag in document.getElementsByTagName("interface"):
1306
# Add annotation tags
1307
for typ in ("method", "signal"):
1308
for tag in if_tag.getElementsByTagName(typ):
1310
for name, prop in (self.
1311
_get_all_dbus_things(typ)):
1312
if (name == tag.getAttribute("name")
1313
and prop._dbus_interface
1314
== if_tag.getAttribute("name")):
1315
annots.update(getattr(
1316
prop, "_dbus_annotations", {}))
1317
for name, value in annots.items():
1318
ann_tag = document.createElement(
1320
ann_tag.setAttribute("name", name)
1321
ann_tag.setAttribute("value", value)
1322
tag.appendChild(ann_tag)
1323
# Add interface annotation tags
1324
for annotation, value in dict(
1325
itertools.chain.from_iterable(
1326
annotations().items()
1327
for name, annotations
1328
in self._get_all_dbus_things("interface")
1329
if name == if_tag.getAttribute("name")
1331
ann_tag = document.createElement("annotation")
1332
ann_tag.setAttribute("name", annotation)
1333
ann_tag.setAttribute("value", value)
1334
if_tag.appendChild(ann_tag)
1335
# Fix argument name for the Introspect method itself
1336
if (if_tag.getAttribute("name")
1337
== dbus.INTROSPECTABLE_IFACE):
1338
for cn in if_tag.getElementsByTagName("method"):
1339
if cn.getAttribute("name") == "Introspect":
1340
for arg in cn.getElementsByTagName("arg"):
1341
if (arg.getAttribute("direction")
1343
arg.setAttribute("name",
1345
xmlstring = document.toxml("utf-8")
1347
except (AttributeError, xml.dom.DOMException,
1348
xml.parsers.expat.ExpatError) as error:
1349
logger.error("Failed to override Introspection method",
1354
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1355
"""A D-Bus object with properties.
1357
Classes inheriting from this can use the dbus_service_property
1358
decorator to expose methods as D-Bus properties. It exposes the
1359
standard Get(), Set(), and GetAll() methods on the D-Bus.
864
inspect.getmembers(cls,
865
self._is_dbus_thing(thing)))
1362
867
def _get_dbus_property(self, interface_name, property_name):
1363
868
"""Returns a bound method if one exists which is a D-Bus
1364
869
property with the specified name and interface.
1366
for cls in self.__class__.__mro__:
1367
for name, value in inspect.getmembers(
1368
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"))):
1369
875
if (value._dbus_name == property_name
1370
876
and value._dbus_interface == interface_name):
1371
877
return value.__get__(self)
1373
879
# No such property
1374
raise DBusPropertyNotFound("{}:{}.{}".format(
1375
self.dbus_object_path, interface_name, property_name))
1378
def _get_all_interface_names(cls):
1379
"""Get a sequence of all interfaces supported by an object"""
1380
return (name for name in set(getattr(getattr(x, attr),
1381
"_dbus_interface", None)
1382
for x in (inspect.getmro(cls))
1384
if name is not None)
1386
@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",
1388
885
out_signature="v")
1389
886
def Get(self, interface_name, property_name):
1390
887
"""Standard D-Bus property Get() method, see D-Bus standard.
1518
1017
return xmlstring
1522
dbus.OBJECT_MANAGER_IFACE
1523
except AttributeError:
1524
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1527
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1528
"""A D-Bus object with an ObjectManager.
1530
Classes inheriting from this exposes the standard
1531
GetManagedObjects call and the InterfacesAdded and
1532
InterfacesRemoved signals on the standard
1533
"org.freedesktop.DBus.ObjectManager" interface.
1535
Note: No signals are sent automatically; they must be sent
1538
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1539
out_signature="a{oa{sa{sv}}}")
1540
def GetManagedObjects(self):
1541
"""This function must be overridden"""
1542
raise NotImplementedError()
1544
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1545
signature="oa{sa{sv}}")
1546
def InterfacesAdded(self, object_path, interfaces_and_properties):
1549
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1550
def InterfacesRemoved(self, object_path, interfaces):
1553
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1555
path_keyword='object_path',
1556
connection_keyword='connection')
1557
def Introspect(self, object_path, connection):
1558
"""Overloading of standard D-Bus method.
1560
Override return argument name of GetManagedObjects to be
1561
"objpath_interfaces_and_properties"
1563
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1567
document = xml.dom.minidom.parseString(xmlstring)
1569
for if_tag in document.getElementsByTagName("interface"):
1570
# Fix argument name for the GetManagedObjects method
1571
if (if_tag.getAttribute("name")
1572
== dbus.OBJECT_MANAGER_IFACE):
1573
for cn in if_tag.getElementsByTagName("method"):
1574
if (cn.getAttribute("name")
1575
== "GetManagedObjects"):
1576
for arg in cn.getElementsByTagName("arg"):
1577
if (arg.getAttribute("direction")
1581
"objpath_interfaces"
1583
xmlstring = document.toxml("utf-8")
1585
except (AttributeError, xml.dom.DOMException,
1586
xml.parsers.expat.ExpatError) as error:
1587
logger.error("Failed to override Introspection method",
1592
1020
def datetime_to_dbus(dt, variant_level=0):
1593
1021
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1595
return dbus.String("", variant_level=variant_level)
1596
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)
1599
1028
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1960
1381
server to mandos-client
1964
1385
# Rejected - signal
1965
1386
@dbus.service.signal(_interface, signature="s")
1966
1387
def Rejected(self, reason):
1970
1391
# NeedApproval - signal
1971
1392
@dbus.service.signal(_interface, signature="tb")
1972
1393
def NeedApproval(self, timeout, default):
1974
1395
return self.need_approval()
1978
1399
# Approve - method
1979
1400
@dbus.service.method(_interface, in_signature="b")
1980
1401
def Approve(self, value):
1981
1402
self.approve(value)
1983
1404
# CheckedOK - method
1984
1405
@dbus.service.method(_interface)
1985
1406
def CheckedOK(self):
1986
1407
self.checked_ok()
1988
1409
# Enable - method
1989
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1990
1410
@dbus.service.method(_interface)
1991
1411
def Enable(self):
1995
1415
# StartChecker - method
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1997
1416
@dbus.service.method(_interface)
1998
1417
def StartChecker(self):
2000
1419
self.start_checker()
2002
1421
# Disable - method
2003
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2004
1422
@dbus.service.method(_interface)
2005
1423
def Disable(self):
2009
1427
# StopChecker - method
2010
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2011
1428
@dbus.service.method(_interface)
2012
1429
def StopChecker(self):
2013
1430
self.stop_checker()
2017
1434
# ApprovalPending - property
2018
1435
@dbus_service_property(_interface, signature="b", access="read")
2019
1436
def ApprovalPending_dbus_property(self):
2020
1437
return dbus.Boolean(bool(self.approvals_pending))
2022
1439
# ApprovedByDefault - property
2023
@dbus_service_property(_interface,
1440
@dbus_service_property(_interface, signature="b",
2025
1441
access="readwrite")
2026
1442
def ApprovedByDefault_dbus_property(self, value=None):
2027
1443
if value is None: # get
2028
1444
return dbus.Boolean(self.approved_by_default)
2029
1445
self.approved_by_default = bool(value)
2031
1447
# ApprovalDelay - property
2032
@dbus_service_property(_interface,
1448
@dbus_service_property(_interface, signature="t",
2034
1449
access="readwrite")
2035
1450
def ApprovalDelay_dbus_property(self, value=None):
2036
1451
if value is None: # get
2037
return dbus.UInt64(self.approval_delay.total_seconds()
1452
return dbus.UInt64(self.approval_delay_milliseconds())
2039
1453
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2041
1455
# ApprovalDuration - property
2042
@dbus_service_property(_interface,
1456
@dbus_service_property(_interface, signature="t",
2044
1457
access="readwrite")
2045
1458
def ApprovalDuration_dbus_property(self, value=None):
2046
1459
if value is None: # get
2047
return dbus.UInt64(self.approval_duration.total_seconds()
1460
return dbus.UInt64(timedelta_to_milliseconds(
1461
self.approval_duration))
2049
1462
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2051
1464
# Name - property
2053
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2054
1465
@dbus_service_property(_interface, signature="s", access="read")
2055
1466
def Name_dbus_property(self):
2056
1467
return dbus.String(self.name)
2060
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2061
@dbus_service_property(_interface, signature="s", access="read")
2062
def KeyID_dbus_property(self):
2063
return dbus.String(self.key_id)
2065
1469
# Fingerprint - property
2067
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2068
1470
@dbus_service_property(_interface, signature="s", access="read")
2069
1471
def Fingerprint_dbus_property(self):
2070
1472
return dbus.String(self.fingerprint)
2072
1474
# Host - property
2073
@dbus_service_property(_interface,
1475
@dbus_service_property(_interface, signature="s",
2075
1476
access="readwrite")
2076
1477
def Host_dbus_property(self, value=None):
2077
1478
if value is None: # get
2078
1479
return dbus.String(self.host)
2079
self.host = str(value)
1480
self.host = unicode(value)
2081
1482
# Created - property
2083
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2084
1483
@dbus_service_property(_interface, signature="s", access="read")
2085
1484
def Created_dbus_property(self):
2086
1485
return datetime_to_dbus(self.created)
2088
1487
# LastEnabled - property
2089
1488
@dbus_service_property(_interface, signature="s", access="read")
2090
1489
def LastEnabled_dbus_property(self):
2091
1490
return datetime_to_dbus(self.last_enabled)
2093
1492
# Enabled - property
2094
@dbus_service_property(_interface,
1493
@dbus_service_property(_interface, signature="b",
2096
1494
access="readwrite")
2097
1495
def Enabled_dbus_property(self, value=None):
2098
1496
if value is None: # get
2147
1544
if (getattr(self, "disable_initiator_tag", None)
2150
GLib.source_remove(self.disable_initiator_tag)
2151
self.disable_initiator_tag = GLib.timeout_add(
2152
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),
2155
1553
# ExtendedTimeout - property
2156
@dbus_service_property(_interface,
1554
@dbus_service_property(_interface, signature="t",
2158
1555
access="readwrite")
2159
1556
def ExtendedTimeout_dbus_property(self, value=None):
2160
1557
if value is None: # get
2161
return dbus.UInt64(self.extended_timeout.total_seconds()
1558
return dbus.UInt64(self.extended_timeout_milliseconds())
2163
1559
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2165
1561
# Interval - property
2166
@dbus_service_property(_interface,
1562
@dbus_service_property(_interface, signature="t",
2168
1563
access="readwrite")
2169
1564
def Interval_dbus_property(self, value=None):
2170
1565
if value is None: # get
2171
return dbus.UInt64(self.interval.total_seconds() * 1000)
1566
return dbus.UInt64(self.interval_milliseconds())
2172
1567
self.interval = datetime.timedelta(0, 0, 0, value)
2173
1568
if getattr(self, "checker_initiator_tag", None) is None:
2175
1570
if self.enabled:
2176
1571
# Reschedule checker run
2177
GLib.source_remove(self.checker_initiator_tag)
2178
self.checker_initiator_tag = GLib.timeout_add(
2179
value, self.start_checker)
2180
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
2182
1577
# Checker - property
2183
@dbus_service_property(_interface,
1578
@dbus_service_property(_interface, signature="s",
2185
1579
access="readwrite")
2186
1580
def Checker_dbus_property(self, value=None):
2187
1581
if value is None: # get
2188
1582
return dbus.String(self.checker_command)
2189
self.checker_command = str(value)
1583
self.checker_command = unicode(value)
2191
1585
# CheckerRunning - property
2192
@dbus_service_property(_interface,
1586
@dbus_service_property(_interface, signature="b",
2194
1587
access="readwrite")
2195
1588
def CheckerRunning_dbus_property(self, value=None):
2196
1589
if value is None: # get
2253
1636
class ClientHandler(socketserver.BaseRequestHandler, object):
2254
1637
"""A class to handle client connections.
2256
1639
Instantiated once for each connection to handle it.
2257
1640
Note: This will run in its own forked process."""
2259
1642
def handle(self):
2260
1643
with contextlib.closing(self.server.child_pipe) as child_pipe:
2261
1644
logger.info("TCP connection from: %s",
2262
str(self.client_address))
1645
unicode(self.client_address))
2263
1646
logger.debug("Pipe FD: %d",
2264
1647
self.server.child_pipe.fileno())
2266
session = gnutls.ClientSession(self.request)
2268
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2269
# "+AES-256-CBC", "+SHA1",
2270
# "+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",
2272
1663
# Use a fallback default, since this MUST be set.
2273
1664
priority = self.server.gnutls_priority
2274
1665
if priority is None:
2275
1666
priority = "NORMAL"
2276
gnutls.priority_set_direct(session._c_object,
2277
priority.encode("utf-8"),
1667
(gnutls.library.functions
1668
.gnutls_priority_set_direct(session._c_object,
2280
1671
# Start communication using the Mandos protocol
2281
1672
# Get protocol number
2282
1673
line = self.request.makefile().readline()
2283
1674
logger.debug("Protocol version: %r", line)
2285
1676
if int(line.strip().split()[0]) > 1:
2286
raise RuntimeError(line)
2287
1678
except (ValueError, IndexError, RuntimeError) as error:
2288
1679
logger.error("Unknown protocol version: %s", error)
2291
1682
# Start GnuTLS connection
2293
1684
session.handshake()
2294
except gnutls.Error as error:
1685
except gnutls.errors.GNUTLSError as error:
2295
1686
logger.warning("Handshake failed: %s", error)
2296
1687
# Do not run session.bye() here: the session is not
2297
1688
# established. Just abandon the request.
2299
1690
logger.debug("Handshake succeeded")
2301
1692
approval_required = False
2303
if gnutls.has_rawpk:
2306
key_id = self.key_id(
2307
self.peer_certificate(session))
2308
except (TypeError, gnutls.Error) as error:
2309
logger.warning("Bad certificate: %s", error)
2311
logger.debug("Key ID: %s", key_id)
2316
fpr = self.fingerprint(
2317
self.peer_certificate(session))
2318
except (TypeError, gnutls.Error) as error:
2319
logger.warning("Bad certificate: %s", error)
2321
logger.debug("Fingerprint: %s", fpr)
2324
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,
2325
1705
self.client_address)
2326
1706
except KeyError:
2329
1709
if client.approval_delay:
2330
1710
delay = client.approval_delay
2331
1711
client.approvals_pending += 1
2332
1712
approval_required = True
2335
1715
if not client.enabled:
2336
1716
logger.info("Client %s is disabled",
2338
1718
if self.server.use_dbus:
2339
1719
# Emit D-Bus signal
2340
1720
client.Rejected("Disabled")
2343
1723
if client.approved or not client.approval_delay:
2344
# We are approved or approval is disabled
1724
#We are approved or approval is disabled
2346
1726
elif client.approved is None:
2347
1727
logger.info("Client %s needs approval",
2380
1762
delay -= time2 - time
2383
session.send(client.secret)
2384
except gnutls.Error as error:
2385
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))
2389
1777
logger.info("Sending secret to %s", client.name)
2390
1778
# bump the timeout using extended_timeout
2391
1779
client.bump_timeout(client.extended_timeout)
2392
1780
if self.server.use_dbus:
2393
1781
# Emit D-Bus signal
2394
1782
client.GotSecret()
2397
1785
if approval_required:
2398
1786
client.approvals_pending -= 1
2401
except gnutls.Error as error:
1789
except gnutls.errors.GNUTLSError as error:
2402
1790
logger.warning("GnuTLS bye failed",
2403
1791
exc_info=error)
2406
1794
def peer_certificate(session):
2407
"Return the peer's certificate as a bytestring"
2409
cert_type = gnutls.certificate_type_get2(session._c_object,
2411
except AttributeError:
2412
cert_type = gnutls.certificate_type_get(session._c_object)
2413
if gnutls.has_rawpk:
2414
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2416
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2417
# If not a valid certificate type...
2418
if cert_type not in valid_cert_types:
2419
logger.info("Cert type %r not in %r", cert_type,
2421
# ...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
2423
1802
list_size = ctypes.c_uint(1)
2424
cert_list = (gnutls.certificate_get_peers
1803
cert_list = (gnutls.library.functions
1804
.gnutls_certificate_get_peers
2425
1805
(session._c_object, ctypes.byref(list_size)))
2426
1806
if not bool(cert_list) and list_size.value != 0:
2427
raise gnutls.Error("error getting peer certificate")
1807
raise gnutls.errors.GNUTLSError("error getting peer"
2428
1809
if list_size.value == 0:
2430
1811
cert = cert_list[0]
2431
1812
return ctypes.string_at(cert.data, cert.size)
2434
def key_id(certificate):
2435
"Convert a certificate bytestring to a hexdigit key ID"
2436
# New GnuTLS "datum" with the public key
2437
datum = gnutls.datum_t(
2438
ctypes.cast(ctypes.c_char_p(certificate),
2439
ctypes.POINTER(ctypes.c_ubyte)),
2440
ctypes.c_uint(len(certificate)))
2441
# XXX all these need to be created in the gnutls "module"
2442
# New empty GnuTLS certificate
2443
pubkey = gnutls.pubkey_t()
2444
gnutls.pubkey_init(ctypes.byref(pubkey))
2445
# Import the raw public key into the certificate
2446
gnutls.pubkey_import(pubkey,
2447
ctypes.byref(datum),
2448
gnutls.X509_FMT_DER)
2449
# New buffer for the key ID
2450
buf = ctypes.create_string_buffer(32)
2451
buf_len = ctypes.c_size_t(len(buf))
2452
# Get the key ID from the raw public key into the buffer
2453
gnutls.pubkey_get_key_id(pubkey,
2454
gnutls.KEYID_USE_SHA256,
2455
ctypes.cast(ctypes.byref(buf),
2456
ctypes.POINTER(ctypes.c_ubyte)),
2457
ctypes.byref(buf_len))
2458
# Deinit the certificate
2459
gnutls.pubkey_deinit(pubkey)
2461
# Convert the buffer to a Python bytestring
2462
key_id = ctypes.string_at(buf, buf_len.value)
2463
# Convert the bytestring to hexadecimal notation
2464
hex_key_id = binascii.hexlify(key_id).upper()
2468
1815
def fingerprint(openpgp):
2469
1816
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2470
1817
# New GnuTLS "datum" with the OpenPGP public key
2471
datum = gnutls.datum_t(
2472
ctypes.cast(ctypes.c_char_p(openpgp),
2473
ctypes.POINTER(ctypes.c_ubyte)),
2474
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))))
2475
1823
# New empty GnuTLS certificate
2476
crt = gnutls.openpgp_crt_t()
2477
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)))
2478
1827
# Import the OpenPGP public key into the certificate
2479
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2480
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))
2481
1832
# Verify the self signature in the key
2482
1833
crtverify = ctypes.c_uint()
2483
gnutls.openpgp_crt_verify_self(crt, 0,
2484
ctypes.byref(crtverify))
1834
(gnutls.library.functions
1835
.gnutls_openpgp_crt_verify_self(crt, 0,
1836
ctypes.byref(crtverify)))
2485
1837
if crtverify.value != 0:
2486
gnutls.openpgp_crt_deinit(crt)
2487
raise gnutls.CertificateSecurityError(code
1838
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1839
raise (gnutls.errors.CertificateSecurityError
2489
1841
# New buffer for the fingerprint
2490
1842
buf = ctypes.create_string_buffer(20)
2491
1843
buf_len = ctypes.c_size_t()
2492
1844
# Get the fingerprint from the certificate into the buffer
2493
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2494
ctypes.byref(buf_len))
1845
(gnutls.library.functions
1846
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1847
ctypes.byref(buf_len)))
2495
1848
# Deinit the certificate
2496
gnutls.openpgp_crt_deinit(crt)
1849
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2497
1850
# Convert the buffer to a Python bytestring
2498
1851
fpr = ctypes.string_at(buf, buf_len.value)
2499
1852
# Convert the bytestring to hexadecimal notation
2588
1935
# socket_wrapper(), if socketfd was set.
2589
1936
socketserver.TCPServer.__init__(self, server_address,
2590
1937
RequestHandlerClass)
2592
1939
def server_bind(self):
2593
1940
"""This overrides the normal server_bind() function
2594
1941
to bind to an interface if one was specified, and also NOT to
2595
1942
bind to an address or port if they were not specified."""
2596
global SO_BINDTODEVICE
2597
1943
if self.interface is not None:
2598
1944
if SO_BINDTODEVICE is None:
2599
# Fall back to a hard-coded value which seems to be
2601
logger.warning("SO_BINDTODEVICE not found, trying 25")
2602
SO_BINDTODEVICE = 25
2604
self.socket.setsockopt(
2605
socket.SOL_SOCKET, SO_BINDTODEVICE,
2606
(self.interface + "\0").encode("utf-8"))
2607
except socket.error as error:
2608
if error.errno == errno.EPERM:
2609
logger.error("No permission to bind to"
2610
" interface %s", self.interface)
2611
elif error.errno == errno.ENOPROTOOPT:
2612
logger.error("SO_BINDTODEVICE not available;"
2613
" cannot bind to interface %s",
2615
elif error.errno == errno.ENODEV:
2616
logger.error("Interface %s does not exist,"
2617
" 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)
2620
1966
# Only bind(2) the socket if we really need to.
2621
1967
if self.server_address[0] or self.server_address[1]:
2622
if self.server_address[1]:
2623
self.allow_reuse_address = True
2624
1968
if not self.server_address[0]:
2625
1969
if self.address_family == socket.AF_INET6:
2626
any_address = "::" # in6addr_any
1970
any_address = "::" # in6addr_any
2628
any_address = "0.0.0.0" # INADDR_ANY
1972
any_address = socket.INADDR_ANY
2629
1973
self.server_address = (any_address,
2630
1974
self.server_address[1])
2631
1975
elif not self.server_address[1]:
2632
self.server_address = (self.server_address[0], 0)
1976
self.server_address = (self.server_address[0],
2633
1978
# if self.interface:
2634
1979
# self.server_address = (self.server_address[0],
2665
2005
self.gnutls_priority = gnutls_priority
2666
2006
IPv6_TCPServer.__init__(self, server_address,
2667
2007
RequestHandlerClass,
2668
interface=interface,
2008
interface = interface,
2009
use_ipv6 = use_ipv6,
2010
socketfd = socketfd)
2672
2011
def server_activate(self):
2673
2012
if self.enabled:
2674
2013
return socketserver.TCPServer.server_activate(self)
2676
2015
def enable(self):
2677
2016
self.enabled = True
2679
2018
def add_pipe(self, parent_pipe, proc):
2680
2019
# Call "handle_ipc" for both data and EOF events
2682
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2683
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2684
functools.partial(self.handle_ipc,
2685
parent_pipe=parent_pipe,
2688
def handle_ipc(self, source, condition,
2691
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):
2692
2029
# error, or the other end of multiprocessing.Pipe has closed
2693
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2030
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2694
2031
# Wait for other process to exit
2698
2035
# Read a request from the child
2699
2036
request = parent_pipe.recv()
2700
2037
command = request[0]
2702
2039
if command == 'init':
2703
key_id = request[1].decode("ascii")
2704
fpr = request[2].decode("ascii")
2705
address = request[3]
2707
for c in self.clients.values():
2708
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2710
if key_id and c.key_id == key_id:
2713
if fpr and c.fingerprint == fpr:
2041
address = request[2]
2043
for c in self.clients.itervalues():
2044
if c.fingerprint == fpr:
2717
logger.info("Client not found for key ID: %s, address"
2718
": %s", key_id or fpr, address)
2048
logger.info("Client not found for fingerprint: %s, ad"
2049
"dress: %s", fpr, address)
2719
2050
if self.use_dbus:
2720
2051
# Emit D-Bus signal
2721
mandos_dbus_service.ClientNotFound(key_id or fpr,
2052
mandos_dbus_service.ClientNotFound(fpr,
2723
2054
parent_pipe.send(False)
2727
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2728
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2729
functools.partial(self.handle_ipc,
2730
parent_pipe=parent_pipe,
2732
client_object=client))
2057
gobject.io_add_watch(parent_pipe.fileno(),
2058
gobject.IO_IN | gobject.IO_HUP,
2059
functools.partial(self.handle_ipc,
2733
2065
parent_pipe.send(True)
2734
2066
# remove the old hook in favor of the new above hook on
2738
2070
funcname = request[1]
2739
2071
args = request[2]
2740
2072
kwargs = request[3]
2742
2074
parent_pipe.send(('data', getattr(client_object,
2743
2075
funcname)(*args,
2746
2078
if command == 'getattr':
2747
2079
attrname = request[1]
2748
if isinstance(client_object.__getattribute__(attrname),
2749
collections.Callable):
2750
parent_pipe.send(('function', ))
2080
if callable(client_object.__getattribute__(attrname)):
2081
parent_pipe.send(('function',))
2753
'data', client_object.__getattribute__(attrname)))
2083
parent_pipe.send(('data', client_object
2084
.__getattribute__(attrname)))
2755
2086
if command == 'setattr':
2756
2087
attrname = request[1]
2757
2088
value = request[2]
2758
2089
setattr(client_object, attrname, value)
2763
2094
def rfc3339_duration_to_delta(duration):
2764
2095
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2766
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2768
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2770
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2772
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2774
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2776
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2778
>>> 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)
2782
2113
# Parsing an RFC 3339 duration with regular expressions is not
2783
2114
# possible - there would have to be multiple places for the same
2784
2115
# values, like seconds. The current code, while more esoteric, is
2785
2116
# cleaner without depending on a parsing library. If Python had a
2786
2117
# built-in library for parsing we would use it, but we'd like to
2787
2118
# avoid excessive use of external libraries.
2789
2120
# New type for defining tokens, syntax, and semantics all-in-one
2790
Token = collections.namedtuple("Token", (
2791
"regexp", # To match token; if "value" is not None, must have
2792
# a "group" containing digits
2793
"value", # datetime.timedelta or None
2794
"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
2795
2130
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2796
2131
# the "duration" ABNF definition in RFC 3339, Appendix A.
2797
2132
token_end = Token(re.compile(r"$"), None, frozenset())
2798
2133
token_second = Token(re.compile(r"(\d+)S"),
2799
2134
datetime.timedelta(seconds=1),
2800
frozenset((token_end, )))
2135
frozenset((token_end,)))
2801
2136
token_minute = Token(re.compile(r"(\d+)M"),
2802
2137
datetime.timedelta(minutes=1),
2803
2138
frozenset((token_second, token_end)))
2962
2294
parser.add_argument("--no-dbus", action="store_false",
2963
2295
dest="use_dbus", help="Do not provide D-Bus"
2964
" system bus interface", default=None)
2296
" system bus interface")
2965
2297
parser.add_argument("--no-ipv6", action="store_false",
2966
dest="use_ipv6", help="Do not use IPv6",
2298
dest="use_ipv6", help="Do not use IPv6")
2968
2299
parser.add_argument("--no-restore", action="store_false",
2969
2300
dest="restore", help="Do not restore stored"
2970
" state", default=None)
2971
2302
parser.add_argument("--socket", type=int,
2972
2303
help="Specify a file descriptor to a network"
2973
2304
" socket to use instead of creating one")
2974
2305
parser.add_argument("--statedir", metavar="DIR",
2975
2306
help="Directory to save/restore state in")
2976
2307
parser.add_argument("--foreground", action="store_true",
2977
help="Run in foreground", default=None)
2978
parser.add_argument("--no-zeroconf", action="store_false",
2979
dest="zeroconf", help="Do not use Zeroconf",
2308
help="Run in foreground")
2982
2310
options = parser.parse_args()
2984
2317
# Default values for config file for server-global settings
2985
if gnutls.has_rawpk:
2986
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2987
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2989
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2990
":+SIGN-DSA-SHA256")
2991
server_defaults = {"interface": "",
2995
"priority": priority,
2996
"servicename": "Mandos",
3002
"statedir": "/var/lib/mandos",
3003
"foreground": "False",
2318
server_defaults = { "interface": "",
2323
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2324
"servicename": "Mandos",
2330
"statedir": "/var/lib/mandos",
2331
"foreground": "False",
3008
2334
# Parse config file for server-global settings
3009
server_config = configparser.ConfigParser(server_defaults)
2335
server_config = configparser.SafeConfigParser(server_defaults)
3010
2336
del server_defaults
3011
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3012
# Convert the ConfigParser object to a dict
2337
server_config.read(os.path.join(options.configdir,
2339
# Convert the SafeConfigParser object to a dict
3013
2340
server_settings = server_config.defaults()
3014
2341
# Use the appropriate methods on the non-string config options
3015
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3016
"foreground", "zeroconf"):
2342
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3017
2343
server_settings[option] = server_config.getboolean("DEFAULT",
3019
2345
if server_settings["port"]:
3135
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3137
2447
except OSError as error:
3138
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3139
.format(uid, gid, os.strerror(error.errno)))
3140
2448
if error.errno != errno.EPERM:
3144
2452
# Enable all possible GnuTLS debugging
3146
2454
# "Use a log level over 10 to enable all debugging options."
3147
2455
# - GnuTLS manual
3148
gnutls.global_set_log_level(11)
2456
gnutls.library.functions.gnutls_global_set_log_level(11)
2458
@gnutls.library.types.gnutls_log_func
3151
2459
def debug_gnutls(level, string):
3152
2460
logger.debug("GnuTLS: %s", string[:-1])
3154
gnutls.global_set_log_function(debug_gnutls)
2462
(gnutls.library.functions
2463
.gnutls_global_set_log_function(debug_gnutls))
3156
2465
# Redirect stdin so all checkers get /dev/null
3157
2466
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3158
2467
os.dup2(null, sys.stdin.fileno())
3162
2471
# Need to fork before connecting to D-Bus
3163
2472
if not foreground:
3164
2473
# Close all input and output, do double fork, etc.
3167
if gi.version_info < (3, 10, 2):
3168
# multiprocessing will use threads, so before we use GLib we
3169
# 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()
3172
2480
global main_loop
3173
2481
# From the Avahi example code
3174
2482
DBusGMainLoop(set_as_default=True)
3175
main_loop = GLib.MainLoop()
2483
main_loop = gobject.MainLoop()
3176
2484
bus = dbus.SystemBus()
3177
2485
# End of Avahi example code
3180
2488
bus_name = dbus.service.BusName("se.recompile.Mandos",
3183
old_bus_name = dbus.service.BusName(
3184
"se.bsnet.fukt.Mandos", bus,
3186
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:
3187
2494
logger.error("Disabling D-Bus:", exc_info=e)
3188
2495
use_dbus = False
3189
2496
server_settings["use_dbus"] = False
3190
2497
tcp_server.use_dbus = False
3192
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3193
service = AvahiServiceToSyslog(
3194
name=server_settings["servicename"],
3195
servicetype="_mandos._tcp",
3198
if server_settings["interface"]:
3199
service.interface = if_nametoindex(
3200
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"])))
3202
2507
global multiprocessing_manager
3203
2508
multiprocessing_manager = multiprocessing.Manager()
3205
2510
client_class = Client
3207
client_class = functools.partial(ClientDBus, bus=bus)
2512
client_class = functools.partial(ClientDBus, bus = bus)
3209
2514
client_settings = Client.config_parser(client_config)
3210
2515
old_client_settings = {}
3211
2516
clients_data = {}
3213
# This is used to redirect stdout and stderr for checker processes
3215
wnull = open(os.devnull, "w") # A writable /dev/null
3216
# Only used if server is running in foreground but not in debug
3218
if debug or not foreground:
3221
2518
# Get client data and settings from last running state.
3222
2519
if server_settings["restore"]:
3224
2521
with open(stored_state_path, "rb") as stored_state:
3225
if sys.version_info.major == 2:
3226
clients_data, old_client_settings = pickle.load(
3229
bytes_clients_data, bytes_old_client_settings = (
3230
pickle.load(stored_state, encoding="bytes"))
3231
# Fix bytes to strings
3234
clients_data = {(key.decode("utf-8")
3235
if isinstance(key, bytes)
3238
bytes_clients_data.items()}
3239
del bytes_clients_data
3240
for key in clients_data:
3241
value = {(k.decode("utf-8")
3242
if isinstance(k, bytes) else k): v
3244
clients_data[key].items()}
3245
clients_data[key] = value
3247
value["client_structure"] = [
3249
if isinstance(s, bytes)
3251
value["client_structure"]]
3252
# .name, .host, and .checker_command
3253
for k in ("name", "host", "checker_command"):
3254
if isinstance(value[k], bytes):
3255
value[k] = value[k].decode("utf-8")
3256
if "key_id" not in value:
3257
value["key_id"] = ""
3258
elif "fingerprint" not in value:
3259
value["fingerprint"] = ""
3260
# old_client_settings
3262
old_client_settings = {
3263
(key.decode("utf-8")
3264
if isinstance(key, bytes)
3267
bytes_old_client_settings.items()}
3268
del bytes_old_client_settings
3269
# .host and .checker_command
3270
for value in old_client_settings.values():
3271
for attribute in ("host", "checker_command"):
3272
if isinstance(value[attribute], bytes):
3273
value[attribute] = (value[attribute]
2522
clients_data, old_client_settings = (pickle.load
3275
2524
os.remove(stored_state_path)
3276
2525
except IOError as e:
3277
2526
if e.errno == errno.ENOENT:
3278
logger.warning("Could not load persistent state:"
3279
" {}".format(os.strerror(e.errno)))
2527
logger.warning("Could not load persistent state: {0}"
2528
.format(os.strerror(e.errno)))
3281
2530
logger.critical("Could not load persistent state:",
3284
2533
except EOFError as e:
3285
2534
logger.warning("Could not load persistent state: "
2535
"EOFError:", exc_info=e)
3289
2537
with PGPEngine() as pgp:
3290
for client_name, client in clients_data.items():
3291
# Skip removed clients
3292
if client_name not in client_settings:
2538
for client_name, client in clients_data.iteritems():
3295
2539
# Decide which value to use after restoring saved state.
3296
2540
# We have three different values: Old config file,
3297
2541
# new config file, and saved state.
3355
2599
for client_name in (set(client_settings)
3356
2600
- set(old_client_settings)):
3357
2601
clients_data[client_name] = client_settings[client_name]
3359
2603
# Create all client objects
3360
for client_name, client in clients_data.items():
2604
for client_name, client in clients_data.iteritems():
3361
2605
tcp_server.clients[client_name] = client_class(
3364
server_settings=server_settings)
2606
name = client_name, settings = client)
3366
2608
if not tcp_server.clients:
3367
2609
logger.warning("No clients defined")
3369
2611
if not foreground:
3370
2612
if pidfile is not None:
3374
print(pid, file=pidfile)
2616
pidfile.write(str(pid) + "\n".encode("utf-8"))
3375
2617
except IOError:
3376
2618
logger.error("Could not write to file %r with PID %d",
3377
2619
pidfilename, pid)
3379
2621
del pidfilename
3381
for termsig in (signal.SIGHUP, signal.SIGTERM):
3382
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3383
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())
3387
@alternate_dbus_interfaces(
3388
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3389
class MandosDBusService(DBusObjectWithObjectManager):
2627
@alternate_dbus_interfaces({"se.recompile.Mandos":
2628
"se.bsnet.fukt.Mandos"})
2629
class MandosDBusService(DBusObjectWithProperties):
3390
2630
"""A D-Bus proxy object"""
3392
2631
def __init__(self):
3393
2632
dbus.service.Object.__init__(self, bus, "/")
3395
2633
_interface = "se.recompile.Mandos"
2635
@dbus_interface_annotations(_interface)
2637
return { "org.freedesktop.DBus.Property"
2638
".EmitsChangedSignal":
3397
2641
@dbus.service.signal(_interface, signature="o")
3398
2642
def ClientAdded(self, objpath):
3402
2646
@dbus.service.signal(_interface, signature="ss")
3403
def ClientNotFound(self, key_id, address):
2647
def ClientNotFound(self, fingerprint, address):
3407
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3409
2651
@dbus.service.signal(_interface, signature="os")
3410
2652
def ClientRemoved(self, objpath, name):
3414
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3416
2656
@dbus.service.method(_interface, out_signature="ao")
3417
2657
def GetAllClients(self):
3419
return dbus.Array(c.dbus_object_path for c in
3420
tcp_server.clients.values())
3422
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2659
return dbus.Array(c.dbus_object_path
2661
tcp_server.clients.itervalues())
3424
2663
@dbus.service.method(_interface,
3425
2664
out_signature="a{oa{sv}}")
3426
2665
def GetAllClientsWithProperties(self):
3428
2667
return dbus.Dictionary(
3429
{c.dbus_object_path: c.GetAll(
3430
"se.recompile.Mandos.Client")
3431
for c in tcp_server.clients.values()},
2668
((c.dbus_object_path, c.GetAll(""))
2669
for c in tcp_server.clients.itervalues()),
3432
2670
signature="oa{sv}")
3434
2672
@dbus.service.method(_interface, in_signature="o")
3435
2673
def RemoveClient(self, object_path):
3437
for c in tcp_server.clients.values():
2675
for c in tcp_server.clients.itervalues():
3438
2676
if c.dbus_object_path == object_path:
3439
2677
del tcp_server.clients[c.name]
3440
2678
c.remove_from_connection()
3441
# Don't signal the disabling
2679
# Don't signal anything except ClientRemoved
3442
2680
c.disable(quiet=True)
3443
# Emit D-Bus signal for removal
3444
self.client_removed_signal(c)
2682
self.ClientRemoved(object_path, c.name)
3446
2684
raise KeyError(object_path)
3450
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3451
out_signature="a{oa{sa{sv}}}")
3452
def GetManagedObjects(self):
3454
return dbus.Dictionary(
3455
{client.dbus_object_path:
3457
{interface: client.GetAll(interface)
3459
client._get_all_interface_names()})
3460
for client in tcp_server.clients.values()})
3462
def client_added_signal(self, client):
3463
"""Send the new standard signal and the old signal"""
3465
# New standard signal
3466
self.InterfacesAdded(
3467
client.dbus_object_path,
3469
{interface: client.GetAll(interface)
3471
client._get_all_interface_names()}))
3473
self.ClientAdded(client.dbus_object_path)
3475
def client_removed_signal(self, client):
3476
"""Send the new standard signal and the old signal"""
3478
# New standard signal
3479
self.InterfacesRemoved(
3480
client.dbus_object_path,
3481
client._get_all_interface_names())
3483
self.ClientRemoved(client.dbus_object_path,
3486
2688
mandos_dbus_service = MandosDBusService()
3488
# Save modules to variables to exempt the modules from being
3489
# unloaded before the function registered with atexit() is run.
3490
mp = multiprocessing
3494
2691
"Cleanup function; run on exit"
3498
mp.active_children()
2694
multiprocessing.active_children()
3500
2695
if not (tcp_server.clients or client_settings):
3503
2698
# Store client before exiting. Secrets are encrypted with key
3504
2699
# based on what config file has. If config file is
3505
2700
# removed/edited, old secret will thus be unrecovable.
3507
2702
with PGPEngine() as pgp:
3508
for client in tcp_server.clients.values():
2703
for client in tcp_server.clients.itervalues():
3509
2704
key = client_settings[client.name]["secret"]
3510
2705
client.encrypted_secret = pgp.encrypt(client.secret,
3512
2707
client_dict = {}
3514
2709
# A list of attributes that can not be pickled
3516
exclude = {"bus", "changedstate", "secret",
3517
"checker", "server_settings"}
3518
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)):
3520
2715
exclude.add(name)
3522
2717
client_dict["encrypted_secret"] = (client
3523
2718
.encrypted_secret)
3524
2719
for attr in client.client_structure:
3525
2720
if attr not in exclude:
3526
2721
client_dict[attr] = getattr(client, attr)
3528
2723
clients[client.name] = client_dict
3529
2724
del client_settings[client.name]["secret"]
3532
with tempfile.NamedTemporaryFile(
3536
dir=os.path.dirname(stored_state_path),
3537
delete=False) as stored_state:
3538
pickle.dump((clients, client_settings), stored_state,
3540
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
3541
2733
os.rename(tempname, stored_state_path)
3542
2734
except (IOError, OSError) as e: