70
import cPickle as pickle
63
import cPickle as pickle
73
64
import multiprocessing
83
68
import dbus.service
85
from gi.repository import GLib
86
71
from dbus.mainloop.glib import DBusGMainLoop
89
74
import xml.dom.minidom
92
if sys.version_info.major == 2:
95
# Show warnings by default
96
if not sys.warnoptions:
98
warnings.simplefilter("default")
100
# Try to find the value of SO_BINDTODEVICE:
102
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
103
# newer, and it is also the most natural place for it:
104
78
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
105
79
except AttributeError:
107
# This is where SO_BINDTODEVICE was up to and including Python
109
81
from IN import SO_BINDTODEVICE
110
82
except ImportError:
111
# In Python 2.7 it seems to have been removed entirely.
112
# Try running the C preprocessor:
114
cc = subprocess.Popen(["cc", "--language=c", "-E",
116
stdin=subprocess.PIPE,
117
stdout=subprocess.PIPE)
118
stdout = cc.communicate(
119
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
120
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
121
except (OSError, ValueError, IndexError):
123
SO_BINDTODEVICE = None
125
if sys.version_info.major == 2:
128
if sys.version_info < (3, 2):
129
configparser.Configparser = configparser.SafeConfigParser
132
stored_state_file = "clients.pickle"
134
logger = logging.getLogger()
135
logging.captureWarnings(True) # Show warnings via the logging system
139
if_nametoindex = ctypes.cdll.LoadLibrary(
140
ctypes.util.find_library("c")).if_nametoindex
141
except (OSError, AttributeError):
143
def if_nametoindex(interface):
144
"Get an interface index the hard way, i.e. using fcntl()"
145
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
146
with contextlib.closing(socket.socket()) as s:
147
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
148
struct.pack(b"16s16x", interface))
149
interface_index = struct.unpack("I", ifreq[16:20])[0]
150
return interface_index
153
def copy_function(func):
154
"""Make a copy of a function"""
155
if sys.version_info.major == 2:
156
return types.FunctionType(func.func_code,
162
return types.FunctionType(func.__code__,
169
def initlogger(debug, level=logging.WARNING):
170
"""init logger and add loglevel"""
173
syslogger = (logging.handlers.SysLogHandler(
174
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
176
syslogger.setFormatter(logging.Formatter
177
('Mandos [%(process)d]: %(levelname)s:'
179
logger.addHandler(syslogger)
182
console = logging.StreamHandler()
183
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
187
logger.addHandler(console)
188
logger.setLevel(level)
191
class PGPError(Exception):
192
"""Exception if encryption/decryption fails"""
197
"""A simple class for OpenPGP symmetric encryption & decryption"""
200
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
203
output = subprocess.check_output(["gpgconf"])
204
for line in output.splitlines():
205
name, text, path = line.split(b":")
210
if e.errno != errno.ENOENT:
212
self.gnupgargs = ['--batch',
213
'--homedir', self.tempdir,
216
# Only GPG version 1 has the --no-use-agent option.
217
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
218
self.gnupgargs.append("--no-use-agent")
223
def __exit__(self, exc_type, exc_value, traceback):
231
if self.tempdir is not None:
232
# Delete contents of tempdir
233
for root, dirs, files in os.walk(self.tempdir,
235
for filename in files:
236
os.remove(os.path.join(root, filename))
238
os.rmdir(os.path.join(root, dirname))
240
os.rmdir(self.tempdir)
243
def password_encode(self, password):
244
# Passphrase can not be empty and can not contain newlines or
245
# NUL bytes. So we prefix it and hex encode it.
246
encoded = b"mandos" + binascii.hexlify(password)
247
if len(encoded) > 2048:
248
# GnuPG can't handle long passwords, so encode differently
249
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
250
.replace(b"\n", b"\\n")
251
.replace(b"\0", b"\\x00"))
254
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:
272
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:
288
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
83
SO_BINDTODEVICE = None
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
96
logger.addHandler(syslogger)
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
102
logger.addHandler(console)
317
104
class AvahiError(Exception):
318
105
def __init__(self, value, *args, **kwargs):
319
106
self.value = value
320
return super(AvahiError, self).__init__(value, *args,
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
324
111
class AvahiServiceError(AvahiError):
328
114
class AvahiGroupError(AvahiError):
118
class AvahiService(object):
333
119
"""An Avahi (Zeroconf) service.
336
122
interface: integer; avahi.IF_UNSPEC or an interface index.
337
123
Used to optionally bind to the specified interface.
338
124
name: string; Example: 'Mandos'
339
125
type: string; Example: '_mandos._tcp'.
340
See <https://www.iana.org/assignments/service-names-port-numbers>
126
See <http://www.dns-sd.org/ServiceTypes.html>
341
127
port: integer; what port to announce
342
128
TXT: list of strings; TXT record for the service
343
129
domain: string; Domain to publish on, default to .local if empty.
502
262
follow_name_owner_changes=True),
503
263
avahi.DBUS_INTERFACE_SERVER)
504
264
self.server.connect_to_signal("StateChanged",
505
self.server_state_changed)
265
self.server_state_changed)
506
266
self.server_state_changed(self.server.GetState())
509
class AvahiServiceToSyslog(AvahiService):
510
def rename(self, *args, **kwargs):
511
"""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'
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))
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
275
class Client(object):
832
276
"""A representation of a client host served by this server.
835
approved: bool(); 'None' if not yet approved/disapproved
279
_approved: bool(); 'None' if not yet approved/disapproved
836
280
approval_delay: datetime.timedelta(); Time to wait for approval
837
281
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
282
checker: subprocess.Popen(); a running checker process used
283
to see if the client lives.
284
'None' if no process is running.
285
checker_callback_tag: a gobject event source tag, or None
842
286
checker_command: string; External command which is run to check
843
287
if client lives. %() expansions are done at
844
288
runtime with vars(self) as dict, so that for
845
289
instance %(name)s can be used in the command.
846
checker_initiator_tag: a GLib event source tag, or None
290
checker_initiator_tag: a gobject event source tag, or None
847
291
created: datetime.datetime(); (UTC) object creation
848
client_structure: Object describing what attributes a client has
849
and is used for storing the client at exit
850
292
current_checker_command: string; current running checker_command
851
disable_initiator_tag: a GLib event source tag, or None
293
disable_hook: If set, called by disable() as disable_hook(self)
294
disable_initiator_tag: a gobject event source tag, or None
853
296
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
297
uniquely identify the client
857
298
host: string; available for use by the checker command
858
299
interval: datetime.timedelta(); How often to start a new checker
859
300
last_approval_request: datetime.datetime(); (UTC) or None
860
301
last_checked_ok: datetime.datetime(); (UTC) or None
861
last_checker_status: integer between 0 and 255 reflecting exit
862
status of last checker. -1 reflects crashed
863
checker, -2 means no checker completed yet.
864
last_checker_signal: The signal which killed the last checker, if
865
last_checker_status is -1
866
last_enabled: datetime.datetime(); (UTC) or None
302
last_enabled: datetime.datetime(); (UTC)
867
303
name: string; from the config file, used in log messages and
868
304
D-Bus identifiers
869
305
secret: bytestring; sent verbatim (over TLS) to client
870
306
timeout: datetime.timedelta(); How long from last_checked_ok
871
307
until this client is disabled
872
extended_timeout: extra long timeout when secret has been sent
308
extended_timeout: extra long timeout when password has been sent
873
309
runtime_expansions: Allowed attributes for runtime expansion.
874
310
expires: datetime.datetime(); time (UTC) when a client will be
875
311
disabled, or None
876
server_settings: The server_settings dict from main()
879
314
runtime_expansions = ("approval_delay", "approval_duration",
880
"created", "enabled", "expires", "key_id",
881
"fingerprint", "host", "interval",
882
"last_approval_request", "last_checked_ok",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
883
317
"last_enabled", "name", "timeout")
886
"extended_timeout": "PT15M",
888
"checker": "fping -q -- %%(host)s",
890
"approval_delay": "PT0S",
891
"approval_duration": "PT1S",
892
"approved_by_default": "True",
897
def config_parser(config):
898
"""Construct a new dict of client settings of this form:
899
{ client_name: {setting_name: value, ...}, ...}
900
with exceptions for any special settings as defined above.
901
NOTE: Must be a pure function. Must return the same result
902
value given the same arguments.
905
for client_name in config.sections():
906
section = dict(config.items(client_name))
907
client = settings[client_name] = {}
909
client["host"] = section["host"]
910
# Reformat values from string types to Python types
911
client["approved_by_default"] = config.getboolean(
912
client_name, "approved_by_default")
913
client["enabled"] = config.getboolean(client_name,
916
# Uppercase and remove spaces from key_id and fingerprint
917
# for later comparison purposes with return value from the
918
# key_id() and fingerprint() functions
919
client["key_id"] = (section.get("key_id", "").upper()
921
client["fingerprint"] = (section["fingerprint"].upper()
923
if "secret" in section:
924
client["secret"] = codecs.decode(section["secret"]
927
elif "secfile" in section:
928
with open(os.path.expanduser(os.path.expandvars
929
(section["secfile"])),
931
client["secret"] = secfile.read()
933
raise TypeError("No secret or secfile for section {}"
935
client["timeout"] = string_to_delta(section["timeout"])
936
client["extended_timeout"] = string_to_delta(
937
section["extended_timeout"])
938
client["interval"] = string_to_delta(section["interval"])
939
client["approval_delay"] = string_to_delta(
940
section["approval_delay"])
941
client["approval_duration"] = string_to_delta(
942
section["approval_duration"])
943
client["checker_command"] = section["checker"]
944
client["last_approval_request"] = None
945
client["last_checked_ok"] = None
946
client["last_checker_status"] = -2
950
def __init__(self, settings, name=None, server_settings=None):
319
def timeout_milliseconds(self):
320
"Return the 'timeout' attribute in milliseconds"
321
return _timedelta_to_milliseconds(self.timeout)
323
def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
325
return _timedelta_to_milliseconds(self.extended_timeout)
327
def interval_milliseconds(self):
328
"Return the 'interval' attribute in milliseconds"
329
return _timedelta_to_milliseconds(self.interval)
331
def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
334
def __init__(self, name = None, disable_hook=None, config=None):
335
"""Note: the 'checker' key in 'config' sets the
336
'checker_command' attribute and *not* the 'checker'
952
if server_settings is None:
954
self.server_settings = server_settings
955
# adding all client settings
956
for setting, value in settings.items():
957
setattr(self, setting, value)
960
if not hasattr(self, "last_enabled"):
961
self.last_enabled = datetime.datetime.utcnow()
962
if not hasattr(self, "expires"):
963
self.expires = (datetime.datetime.utcnow()
966
self.last_enabled = None
969
341
logger.debug("Creating client %r", self.name)
970
logger.debug(" Key ID: %s", self.key_id)
342
# Uppercase and remove spaces from fingerprint for later
343
# comparison purposes with return value from the fingerprint()
345
self.fingerprint = (config["fingerprint"].upper()
971
347
logger.debug(" Fingerprint: %s", self.fingerprint)
972
self.created = settings.get("created",
973
datetime.datetime.utcnow())
975
# attributes specific for this server instance
348
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
350
elif "secfile" in config:
351
with open(os.path.expanduser(os.path.expandvars
352
(config["secfile"])),
354
self.secret = secfile.read()
356
raise TypeError("No secret or secfile for client %s"
358
self.host = config.get("host", "")
359
self.created = datetime.datetime.utcnow()
361
self.last_approval_request = None
362
self.last_enabled = None
363
self.last_checked_ok = None
364
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
self.interval = string_to_delta(config["interval"])
368
self.disable_hook = disable_hook
976
369
self.checker = None
977
370
self.checker_initiator_tag = None
978
371
self.disable_initiator_tag = None
979
373
self.checker_callback_tag = None
374
self.checker_command = config["checker"]
980
375
self.current_checker_command = None
376
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
982
380
self.approvals_pending = 0
983
self.changedstate = multiprocessing_manager.Condition(
984
multiprocessing_manager.Lock())
985
self.client_structure = [attr
986
for attr in self.__dict__.keys()
987
if not attr.startswith("_")]
988
self.client_structure.append("client_structure")
990
for name, t in inspect.getmembers(
991
type(self), lambda obj: isinstance(obj, property)):
992
if not name.startswith("_"):
993
self.client_structure.append(name)
995
# Send notice to process children that client state has changed
381
self.approval_delay = string_to_delta(
382
config["approval_delay"])
383
self.approval_duration = string_to_delta(
384
config["approval_duration"])
385
self.changedstate = (multiprocessing_manager
386
.Condition(multiprocessing_manager
996
389
def send_changedstate(self):
997
with self.changedstate:
998
self.changedstate.notify_all()
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
1000
394
def enable(self):
1001
395
"""Start this client's checker and timeout hooks"""
1002
396
if getattr(self, "enabled", False):
1003
397
# Already enabled
399
self.send_changedstate()
400
# Schedule a new checker to be started an 'interval' from now,
401
# and every interval from then on.
402
self.checker_initiator_tag = (gobject.timeout_add
403
(self.interval_milliseconds(),
405
# Schedule a disable() when 'timeout' has passed
1005
406
self.expires = datetime.datetime.utcnow() + self.timeout
407
self.disable_initiator_tag = (gobject.timeout_add
408
(self.timeout_milliseconds(),
1006
410
self.enabled = True
1007
411
self.last_enabled = datetime.datetime.utcnow()
1009
self.send_changedstate()
412
# Also start a new checker *right now*.
1011
415
def disable(self, quiet=True):
1012
416
"""Disable this client."""
1013
417
if not getattr(self, "enabled", False):
420
self.send_changedstate()
1016
422
logger.info("Disabling client %s", self.name)
1017
if getattr(self, "disable_initiator_tag", None) is not None:
1018
GLib.source_remove(self.disable_initiator_tag)
423
if getattr(self, "disable_initiator_tag", False):
424
gobject.source_remove(self.disable_initiator_tag)
1019
425
self.disable_initiator_tag = None
1020
426
self.expires = None
1021
if getattr(self, "checker_initiator_tag", None) is not None:
1022
GLib.source_remove(self.checker_initiator_tag)
427
if getattr(self, "checker_initiator_tag", False):
428
gobject.source_remove(self.checker_initiator_tag)
1023
429
self.checker_initiator_tag = None
1024
430
self.stop_checker()
431
if self.disable_hook:
432
self.disable_hook(self)
1025
433
self.enabled = False
1027
self.send_changedstate()
1028
# Do not run this again if called by a GLib.timeout_add
434
# Do not run this again if called by a gobject.timeout_add
1031
437
def __del__(self):
438
self.disable_hook = None
1034
def init_checker(self):
1035
# Schedule a new checker to be started an 'interval' from now,
1036
# and every interval from then on.
1037
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),
1042
# Schedule a disable() when 'timeout' has passed
1043
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)
1047
# Also start a new checker *right now*.
1048
self.start_checker()
1050
def checker_callback(self, source, condition, connection,
441
def checker_callback(self, pid, condition, command):
1052
442
"""The checker has completed, so take appropriate actions."""
1053
# Read return code from connection (see call_pipe)
1054
returncode = connection.recv()
1057
443
self.checker_callback_tag = None
1058
444
self.checker = None
1061
self.last_checker_status = returncode
1062
self.last_checker_signal = None
1063
if self.last_checker_status == 0:
445
if os.WIFEXITED(condition):
446
exitstatus = os.WEXITSTATUS(condition)
1064
448
logger.info("Checker for %(name)s succeeded",
1066
450
self.checked_ok()
1068
logger.info("Checker for %(name)s failed", vars(self))
452
logger.info("Checker for %(name)s failed",
1070
self.last_checker_status = -1
1071
self.last_checker_signal = -returncode
1072
455
logger.warning("Checker for %(name)s crashed?",
1076
def checked_ok(self):
1077
"""Assert that the client has been seen, alive and well."""
1078
self.last_checked_ok = datetime.datetime.utcnow()
1079
self.last_checker_status = 0
1080
self.last_checker_signal = None
1083
def bump_timeout(self, timeout=None):
1084
"""Bump up the timeout for this client."""
458
def checked_ok(self, timeout=None):
459
"""Bump up the timeout for this client.
461
This should only be called when the client has been seen,
1085
464
if timeout is None:
1086
465
timeout = self.timeout
1087
if self.disable_initiator_tag is not None:
1088
GLib.source_remove(self.disable_initiator_tag)
1089
self.disable_initiator_tag = None
1090
if getattr(self, "enabled", False):
1091
self.disable_initiator_tag = GLib.timeout_add(
1092
int(timeout.total_seconds() * 1000), self.disable)
1093
self.expires = datetime.datetime.utcnow() + timeout
466
self.last_checked_ok = datetime.datetime.utcnow()
467
gobject.source_remove(self.disable_initiator_tag)
468
self.disable_initiator_tag = (gobject.timeout_add
469
(_timedelta_to_milliseconds
470
(timeout), self.disable))
471
self.expires = datetime.datetime.utcnow() + timeout
1095
473
def need_approval(self):
1096
474
self.last_approval_request = datetime.datetime.utcnow()
1098
476
def start_checker(self):
1099
477
"""Start a new checker subprocess if one is not running.
1101
479
If a checker already exists, leave it running and do
1103
481
# The reason for not killing a running checker is that if we
1104
# did that, and if a checker (for some reason) started running
1105
# slowly and taking more than 'interval' time, then the client
1106
# would inevitably timeout, since no checker would get a
1107
# chance to run to completion. If we instead leave running
482
# did that, then if a checker (for some reason) started
483
# running slowly and taking more than 'interval' time, the
484
# client would inevitably timeout, since no checker would get
485
# a chance to run to completion. If we instead leave running
1108
486
# checkers alone, the checker would have to take more time
1109
487
# than 'timeout' for the client to be disabled, which is as it
1112
if self.checker is not None and not self.checker.is_alive():
1113
logger.warning("Checker was not alive; joining")
490
# If a checker exists, make sure it is not a zombie
492
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
493
except (AttributeError, OSError) as error:
494
if (isinstance(error, OSError)
495
and error.errno != errno.ECHILD):
499
logger.warning("Checker was a zombie")
500
gobject.source_remove(self.checker_callback_tag)
501
self.checker_callback(pid, status,
502
self.current_checker_command)
1116
503
# Start a new checker if needed
1117
504
if self.checker is None:
1118
# Escape attributes for the shell
1120
attr: re.escape(str(getattr(self, attr)))
1121
for attr in self.runtime_expansions}
1123
command = self.checker_command % escaped_attrs
1124
except TypeError as error:
1125
logger.error('Could not format string "%s"',
1126
self.checker_command,
1128
return True # Try again later
506
# In case checker_command has exactly one % operator
507
command = self.checker_command % self.host
509
# Escape attributes for the shell
510
escaped_attrs = dict(
512
re.escape(unicode(str(getattr(self, attr, "")),
516
self.runtime_expansions)
519
command = self.checker_command % escaped_attrs
520
except TypeError as error:
521
logger.error('Could not format string "%s":'
522
' %s', self.checker_command, error)
523
return True # Try again later
1129
524
self.current_checker_command = command
1130
logger.info("Starting checker %r for %s", command,
1132
# We don't need to redirect stdout and stderr, since
1133
# in normal mode, that is already done by daemon(),
1134
# and in debug mode we don't want to. (Stdin is
1135
# always replaced by /dev/null.)
1136
# The exception is when not debugging but nevertheless
1137
# running in the foreground; use the previously
1139
popen_args = {"close_fds": True,
1142
if (not self.server_settings["debug"]
1143
and self.server_settings["foreground"]):
1144
popen_args.update({"stdout": wnull,
1146
pipe = multiprocessing.Pipe(duplex=False)
1147
self.checker = multiprocessing.Process(
1149
args=(pipe[1], subprocess.call, command),
1151
self.checker.start()
1152
self.checker_callback_tag = GLib.io_add_watch(
1153
GLib.IOChannel.unix_new(pipe[0].fileno()),
1154
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1155
self.checker_callback, pipe[0], command)
1156
# Re-run this periodically if run by GLib.timeout_add
526
logger.info("Starting checker %r for %s",
528
# We don't need to redirect stdout and stderr, since
529
# in normal mode, that is already done by daemon(),
530
# and in debug mode we don't want to. (Stdin is
531
# always replaced by /dev/null.)
532
self.checker = subprocess.Popen(command,
535
self.checker_callback_tag = (gobject.child_watch_add
537
self.checker_callback,
539
# The checker may have completed before the gobject
540
# watch was added. Check for this.
541
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
543
gobject.source_remove(self.checker_callback_tag)
544
self.checker_callback(pid, status, command)
545
except OSError as error:
546
logger.error("Failed to start subprocess: %s",
548
# Re-run this periodically if run by gobject.timeout_add
1159
551
def stop_checker(self):
1160
552
"""Force the checker process, if any, to stop."""
1161
553
if self.checker_callback_tag:
1162
GLib.source_remove(self.checker_callback_tag)
554
gobject.source_remove(self.checker_callback_tag)
1163
555
self.checker_callback_tag = None
1164
556
if getattr(self, "checker", None) is None:
1166
558
logger.debug("Stopping checker for %(name)s", vars(self))
1167
self.checker.terminate()
560
os.kill(self.checker.pid, signal.SIGTERM)
562
#if self.checker.poll() is None:
563
# os.kill(self.checker.pid, signal.SIGKILL)
564
except OSError as error:
565
if error.errno != errno.ESRCH: # No such process
1168
567
self.checker = None
1171
def dbus_service_property(dbus_interface,
570
def dbus_service_property(dbus_interface, signature="v",
571
access="readwrite", byte_arrays=False):
1175
572
"""Decorators for marking methods of a DBusObjectWithProperties to
1176
573
become properties on the D-Bus.
1178
575
The decorated method will be called with no arguments by "Get"
1179
576
and with one argument by "Set".
1181
578
The parameters, where they are supported, are the same as
1182
579
dbus.service.method, except there is only "signature", since the
1183
580
type from Get() and the type sent to Set() is the same.
1516
750
except (AttributeError, xml.dom.DOMException,
1517
751
xml.parsers.expat.ExpatError) as error:
1518
752
logger.error("Failed to override Introspection method",
1524
dbus.OBJECT_MANAGER_IFACE
1525
except AttributeError:
1526
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1529
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1530
"""A D-Bus object with an ObjectManager.
1532
Classes inheriting from this exposes the standard
1533
GetManagedObjects call and the InterfacesAdded and
1534
InterfacesRemoved signals on the standard
1535
"org.freedesktop.DBus.ObjectManager" interface.
1537
Note: No signals are sent automatically; they must be sent
1540
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1541
out_signature="a{oa{sa{sv}}}")
1542
def GetManagedObjects(self):
1543
"""This function must be overridden"""
1544
raise NotImplementedError()
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1547
signature="oa{sa{sv}}")
1548
def InterfacesAdded(self, object_path, interfaces_and_properties):
1551
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1552
def InterfacesRemoved(self, object_path, interfaces):
1555
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1557
path_keyword='object_path',
1558
connection_keyword='connection')
1559
def Introspect(self, object_path, connection):
1560
"""Overloading of standard D-Bus method.
1562
Override return argument name of GetManagedObjects to be
1563
"objpath_interfaces_and_properties"
1565
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1569
document = xml.dom.minidom.parseString(xmlstring)
1571
for if_tag in document.getElementsByTagName("interface"):
1572
# Fix argument name for the GetManagedObjects method
1573
if (if_tag.getAttribute("name")
1574
== dbus.OBJECT_MANAGER_IFACE):
1575
for cn in if_tag.getElementsByTagName("method"):
1576
if (cn.getAttribute("name")
1577
== "GetManagedObjects"):
1578
for arg in cn.getElementsByTagName("arg"):
1579
if (arg.getAttribute("direction")
1583
"objpath_interfaces"
1585
xmlstring = document.toxml("utf-8")
1587
except (AttributeError, xml.dom.DOMException,
1588
xml.parsers.expat.ExpatError) as error:
1589
logger.error("Failed to override Introspection method",
1594
def datetime_to_dbus(dt, variant_level=0):
757
def datetime_to_dbus (dt, variant_level=0):
1595
758
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1597
return dbus.String("", variant_level=variant_level)
1598
return dbus.String(dt.isoformat(), variant_level=variant_level)
1601
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1602
"""A class decorator; applied to a subclass of
1603
dbus.service.Object, it will add alternate D-Bus attributes with
1604
interface names according to the "alt_interface_names" mapping.
1607
@alternate_dbus_interfaces({"org.example.Interface":
1608
"net.example.AlternateInterface"})
1609
class SampleDBusObject(dbus.service.Object):
1610
@dbus.service.method("org.example.Interface")
1611
def SampleDBusMethod():
1614
The above "SampleDBusMethod" on "SampleDBusObject" will be
1615
reachable via two interfaces: "org.example.Interface" and
1616
"net.example.AlternateInterface", the latter of which will have
1617
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1618
"true", unless "deprecate" is passed with a False value.
1620
This works for methods and signals, and also for D-Bus properties
1621
(from DBusObjectWithProperties) and interfaces (from the
1622
dbus_interface_annotations decorator).
760
return dbus.String("", variant_level = variant_level)
761
return dbus.String(dt.isoformat(),
762
variant_level=variant_level)
764
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
766
"""Applied to an empty subclass of a D-Bus object, this metaclass
767
will add additional D-Bus attributes matching a certain pattern.
1626
for orig_interface_name, alt_interface_name in (
1627
alt_interface_names.items()):
1629
interface_names = set()
1630
# Go though all attributes of the class
1631
for attrname, attribute in inspect.getmembers(cls):
769
def __new__(mcs, name, bases, attr):
770
# Go through all the base classes which could have D-Bus
771
# methods, signals, or properties in them
772
for base in (b for b in bases
773
if issubclass(b, dbus.service.Object)):
774
# Go though all attributes of the base class
775
for attrname, attribute in inspect.getmembers(base):
1632
776
# Ignore non-D-Bus attributes, and D-Bus attributes
1633
777
# with the wrong interface name
1634
778
if (not hasattr(attribute, "_dbus_interface")
1635
or not attribute._dbus_interface.startswith(
1636
orig_interface_name)):
779
or not attribute._dbus_interface
780
.startswith("se.recompile.Mandos")):
1638
782
# Create an alternate D-Bus interface name based on
1639
783
# the current name
1640
alt_interface = attribute._dbus_interface.replace(
1641
orig_interface_name, alt_interface_name)
1642
interface_names.add(alt_interface)
784
alt_interface = (attribute._dbus_interface
785
.replace("se.recompile.Mandos",
786
"se.bsnet.fukt.Mandos"))
1643
787
# Is this a D-Bus signal?
1644
788
if getattr(attribute, "_dbus_is_signal", False):
1645
# Extract the original non-method undecorated
1646
# function by black magic
1647
if sys.version_info.major == 2:
1648
nonmethod_func = (dict(
789
# Extract the original non-method function by
791
nonmethod_func = (dict(
1649
792
zip(attribute.func_code.co_freevars,
1650
attribute.__closure__))
1651
["func"].cell_contents)
1653
nonmethod_func = (dict(
1654
zip(attribute.__code__.co_freevars,
1655
attribute.__closure__))
1656
["func"].cell_contents)
793
attribute.__closure__))["func"]
1657
795
# Create a new, but exactly alike, function
1658
796
# object, and decorate it to be a new D-Bus signal
1659
797
# with the alternate D-Bus interface name
1660
new_function = copy_function(nonmethod_func)
1661
new_function = (dbus.service.signal(
1663
attribute._dbus_signature)(new_function))
1664
# Copy annotations, if any
1666
new_function._dbus_annotations = dict(
1667
attribute._dbus_annotations)
1668
except AttributeError:
798
new_function = (dbus.service.signal
800
attribute._dbus_signature)
802
nonmethod_func.func_code,
803
nonmethod_func.func_globals,
804
nonmethod_func.func_name,
805
nonmethod_func.func_defaults,
806
nonmethod_func.func_closure)))
1671
807
# Define a creator of a function to call both the
1672
# original and alternate functions, so both the
1673
# original and alternate signals gets sent when
1674
# the function is called
808
# old and new functions, so both the old and new
809
# signals gets sent when the function is called
1675
810
def fixscope(func1, func2):
1676
811
"""This function is a scope container to pass
1677
812
func1 and func2 to the "call_both" function
1678
813
outside of its arguments"""
1680
@functools.wraps(func2)
1681
814
def call_both(*args, **kwargs):
1682
815
"""This function will emit two D-Bus
1683
816
signals by calling func1 and func2"""
1684
817
func1(*args, **kwargs)
1685
818
func2(*args, **kwargs)
1686
# Make wrapper function look like a D-Bus
1688
for name, attr in inspect.getmembers(func2):
1689
if name.startswith("_dbus_"):
1690
setattr(call_both, name, attr)
1692
819
return call_both
1693
820
# Create the "call_both" function and add it to
1695
attr[attrname] = fixscope(attribute, new_function)
822
attr[attrname] = fixscope(attribute,
1696
824
# Is this a D-Bus method?
1697
825
elif getattr(attribute, "_dbus_is_method", False):
1698
826
# Create a new, but exactly alike, function
1699
827
# object. Decorate it to be a new D-Bus method
1700
828
# with the alternate D-Bus interface name. Add it
1703
dbus.service.method(
1705
attribute._dbus_in_signature,
1706
attribute._dbus_out_signature)
1707
(copy_function(attribute)))
1708
# Copy annotations, if any
1710
attr[attrname]._dbus_annotations = dict(
1711
attribute._dbus_annotations)
1712
except AttributeError:
830
attr[attrname] = (dbus.service.method
832
attribute._dbus_in_signature,
833
attribute._dbus_out_signature)
835
(attribute.func_code,
836
attribute.func_globals,
838
attribute.func_defaults,
839
attribute.func_closure)))
1714
840
# Is this a D-Bus property?
1715
841
elif getattr(attribute, "_dbus_is_property", False):
1716
842
# Create a new, but exactly alike, function
1717
843
# object, and decorate it to be a new D-Bus
1718
844
# property with the alternate D-Bus interface
1719
845
# name. Add it to the class.
1720
attr[attrname] = (dbus_service_property(
1721
alt_interface, attribute._dbus_signature,
1722
attribute._dbus_access,
1723
attribute._dbus_get_args_options
1725
(copy_function(attribute)))
1726
# Copy annotations, if any
1728
attr[attrname]._dbus_annotations = dict(
1729
attribute._dbus_annotations)
1730
except AttributeError:
1732
# Is this a D-Bus interface?
1733
elif getattr(attribute, "_dbus_is_interface", False):
1734
# Create a new, but exactly alike, function
1735
# object. Decorate it to be a new D-Bus interface
1736
# with the alternate D-Bus interface name. Add it
1739
dbus_interface_annotations(alt_interface)
1740
(copy_function(attribute)))
1742
# Deprecate all alternate interfaces
1743
iname = "_AlternateDBusNames_interface_annotation{}"
1744
for interface_name in interface_names:
1746
@dbus_interface_annotations(interface_name)
1748
return {"org.freedesktop.DBus.Deprecated":
1750
# Find an unused name
1751
for aname in (iname.format(i)
1752
for i in itertools.count()):
1753
if aname not in attr:
1757
# Replace the class with a new subclass of it with
1758
# methods, signals, etc. as created above.
1759
if sys.version_info.major == 2:
1760
cls = type(b"{}Alternate".format(cls.__name__),
1763
cls = type("{}Alternate".format(cls.__name__),
1770
@alternate_dbus_interfaces({"se.recompile.Mandos":
1771
"se.bsnet.fukt.Mandos"})
846
attr[attrname] = (dbus_service_property
848
attribute._dbus_signature,
849
attribute._dbus_access,
851
._dbus_get_args_options
854
(attribute.func_code,
855
attribute.func_globals,
857
attribute.func_defaults,
858
attribute.func_closure)))
859
return type.__new__(mcs, name, bases, attr)
1772
861
class ClientDBus(Client, DBusObjectWithProperties):
1773
862
"""A Client class using D-Bus
1776
865
dbus_object_path: dbus.ObjectPath
1777
866
bus: dbus.SystemBus()
1780
869
runtime_expansions = (Client.runtime_expansions
1781
+ ("dbus_object_path", ))
1783
_interface = "se.recompile.Mandos.Client"
870
+ ("dbus_object_path",))
1785
872
# dbus.service.Object doesn't use super(), so we can't either.
1787
def __init__(self, bus=None, *args, **kwargs):
874
def __init__(self, bus = None, *args, **kwargs):
875
self._approvals_pending = 0
1789
877
Client.__init__(self, *args, **kwargs)
1790
878
# Only now, when this client is initialized, can it show up on
1792
client_object_name = str(self.name).translate(
880
client_object_name = unicode(self.name).translate(
1793
881
{ord("."): ord("_"),
1794
882
ord("-"): ord("_")})
1795
self.dbus_object_path = dbus.ObjectPath(
1796
"/clients/" + client_object_name)
883
self.dbus_object_path = (dbus.ObjectPath
884
("/clients/" + client_object_name))
1797
885
DBusObjectWithProperties.__init__(self, self.bus,
1798
886
self.dbus_object_path)
1800
def notifychangeproperty(transform_func, dbus_name,
1801
type_func=lambda x: x,
1803
invalidate_only=False,
1804
_interface=_interface):
888
def notifychangeproperty(transform_func,
889
dbus_name, type_func=lambda x: x,
1805
891
""" Modify a variable so that it's a property which announces
1806
892
its changes to DBus.
1808
transform_fun: Function that takes a value and a variant_level
1809
and transforms it to a D-Bus type.
894
transform_fun: Function that takes a value and transforms it
1810
896
dbus_name: D-Bus name of the variable
1811
897
type_func: Function that transform the value before sending it
1812
898
to the D-Bus. Default: no transform
1813
899
variant_level: D-Bus variant level. Default: 1
1815
attrname = "_{}".format(dbus_name)
901
attrname = "_{0}".format(dbus_name)
1817
902
def setter(self, value):
1818
903
if hasattr(self, "dbus_object_path"):
1819
904
if (not hasattr(self, attrname) or
1820
905
type_func(getattr(self, attrname, None))
1821
906
!= type_func(value)):
1823
self.PropertiesChanged(
1824
_interface, dbus.Dictionary(),
1825
dbus.Array((dbus_name, )))
1827
dbus_value = transform_func(
1829
variant_level=variant_level)
1830
self.PropertyChanged(dbus.String(dbus_name),
1832
self.PropertiesChanged(
1834
dbus.Dictionary({dbus.String(dbus_name):
907
dbus_value = transform_func(type_func(value),
909
self.PropertyChanged(dbus.String(dbus_name),
1837
911
setattr(self, attrname, value)
1839
913
return property(lambda self: getattr(self, attrname), setter)
1841
916
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1842
917
approvals_pending = notifychangeproperty(dbus.Boolean,
1843
918
"ApprovalPending",
1845
920
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1846
921
last_enabled = notifychangeproperty(datetime_to_dbus,
1848
checker = notifychangeproperty(
1849
dbus.Boolean, "CheckerRunning",
1850
type_func=lambda checker: checker is not None)
923
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
924
type_func = lambda checker:
1851
926
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1852
927
"LastCheckedOK")
1853
last_checker_status = notifychangeproperty(dbus.Int16,
1854
"LastCheckerStatus")
1855
928
last_approval_request = notifychangeproperty(
1856
929
datetime_to_dbus, "LastApprovalRequest")
1857
930
approved_by_default = notifychangeproperty(dbus.Boolean,
1858
931
"ApprovedByDefault")
1859
approval_delay = notifychangeproperty(
1860
dbus.UInt64, "ApprovalDelay",
1861
type_func=lambda td: td.total_seconds() * 1000)
932
approval_delay = notifychangeproperty(dbus.UInt16,
935
_timedelta_to_milliseconds)
1862
936
approval_duration = notifychangeproperty(
1863
dbus.UInt64, "ApprovalDuration",
1864
type_func=lambda td: td.total_seconds() * 1000)
937
dbus.UInt16, "ApprovalDuration",
938
type_func = _timedelta_to_milliseconds)
1865
939
host = notifychangeproperty(dbus.String, "Host")
1866
timeout = notifychangeproperty(
1867
dbus.UInt64, "Timeout",
1868
type_func=lambda td: td.total_seconds() * 1000)
940
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
942
_timedelta_to_milliseconds)
1869
943
extended_timeout = notifychangeproperty(
1870
dbus.UInt64, "ExtendedTimeout",
1871
type_func=lambda td: td.total_seconds() * 1000)
1872
interval = notifychangeproperty(
1873
dbus.UInt64, "Interval",
1874
type_func=lambda td: td.total_seconds() * 1000)
944
dbus.UInt16, "ExtendedTimeout",
945
type_func = _timedelta_to_milliseconds)
946
interval = notifychangeproperty(dbus.UInt16,
949
_timedelta_to_milliseconds)
1875
950
checker_command = notifychangeproperty(dbus.String, "Checker")
1876
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1877
invalidate_only=True)
1879
952
del notifychangeproperty
1881
954
def __del__(self, *args, **kwargs):
1883
956
self.remove_from_connection()
2201
1244
self.start_checker()
2203
1246
self.stop_checker()
2205
1248
# ObjectPath - property
2207
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2208
"org.freedesktop.DBus.Deprecated": "true"})
2209
1249
@dbus_service_property(_interface, signature="o", access="read")
2210
1250
def ObjectPath_dbus_property(self):
2211
return self.dbus_object_path # is already a dbus.ObjectPath
1251
return self.dbus_object_path # is already a dbus.ObjectPath
2213
1253
# Secret = property
2215
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2217
@dbus_service_property(_interface,
1254
@dbus_service_property(_interface, signature="ay",
1255
access="write", byte_arrays=True)
2221
1256
def Secret_dbus_property(self, value):
2222
self.secret = bytes(value)
1257
self.secret = str(value)
2228
def __init__(self, child_pipe, key_id, fpr, address):
1262
class ProxyClient(object):
1263
def __init__(self, child_pipe, fpr, address):
2229
1264
self._pipe = child_pipe
2230
self._pipe.send(('init', key_id, fpr, address))
1265
self._pipe.send(('init', fpr, address))
2231
1266
if not self._pipe.recv():
2232
raise KeyError(key_id or fpr)
2234
1269
def __getattribute__(self, name):
1270
if(name == '_pipe'):
2236
1271
return super(ProxyClient, self).__getattribute__(name)
2237
1272
self._pipe.send(('getattr', name))
2238
1273
data = self._pipe.recv()
2239
1274
if data[0] == 'data':
2241
1276
if data[0] == 'function':
2243
1277
def func(*args, **kwargs):
2244
1278
self._pipe.send(('funcall', name, args, kwargs))
2245
1279
return self._pipe.recv()[1]
2249
1282
def __setattr__(self, name, value):
1283
if(name == '_pipe'):
2251
1284
return super(ProxyClient, self).__setattr__(name, value)
2252
1285
self._pipe.send(('setattr', name, value))
1287
class ClientDBusTransitional(ClientDBus):
1288
__metaclass__ = AlternateDBusNamesMetaclass
2255
1290
class ClientHandler(socketserver.BaseRequestHandler, object):
2256
1291
"""A class to handle client connections.
2258
1293
Instantiated once for each connection to handle it.
2259
1294
Note: This will run in its own forked process."""
2261
1296
def handle(self):
2262
1297
with contextlib.closing(self.server.child_pipe) as child_pipe:
2263
1298
logger.info("TCP connection from: %s",
2264
str(self.client_address))
1299
unicode(self.client_address))
2265
1300
logger.debug("Pipe FD: %d",
2266
1301
self.server.child_pipe.fileno())
2268
session = gnutls.ClientSession(self.request)
2270
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2271
# "+AES-256-CBC", "+SHA1",
2272
# "+COMP-NULL", "+CTYPE-OPENPGP",
1303
session = (gnutls.connection
1304
.ClientSession(self.request,
1306
.X509Credentials()))
1308
# Note: gnutls.connection.X509Credentials is really a
1309
# generic GnuTLS certificate credentials object so long as
1310
# no X.509 keys are added to it. Therefore, we can use it
1311
# here despite using OpenPGP certificates.
1313
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1314
# "+AES-256-CBC", "+SHA1",
1315
# "+COMP-NULL", "+CTYPE-OPENPGP",
2274
1317
# Use a fallback default, since this MUST be set.
2275
1318
priority = self.server.gnutls_priority
2276
1319
if priority is None:
2277
1320
priority = "NORMAL"
2278
gnutls.priority_set_direct(session._c_object,
2279
priority.encode("utf-8"),
1321
(gnutls.library.functions
1322
.gnutls_priority_set_direct(session._c_object,
2282
1325
# Start communication using the Mandos protocol
2283
1326
# Get protocol number
2284
1327
line = self.request.makefile().readline()
2285
1328
logger.debug("Protocol version: %r", line)
2287
1330
if int(line.strip().split()[0]) > 1:
2288
raise RuntimeError(line)
2289
1332
except (ValueError, IndexError, RuntimeError) as error:
2290
1333
logger.error("Unknown protocol version: %s", error)
2293
1336
# Start GnuTLS connection
2295
1338
session.handshake()
2296
except gnutls.Error as error:
1339
except gnutls.errors.GNUTLSError as error:
2297
1340
logger.warning("Handshake failed: %s", error)
2298
1341
# Do not run session.bye() here: the session is not
2299
1342
# established. Just abandon the request.
2301
1344
logger.debug("Handshake succeeded")
2303
1346
approval_required = False
2305
if gnutls.has_rawpk:
2308
key_id = self.key_id(
2309
self.peer_certificate(session))
2310
except (TypeError, gnutls.Error) as error:
2311
logger.warning("Bad certificate: %s", error)
2313
logger.debug("Key ID: %s", key_id)
2318
fpr = self.fingerprint(
2319
self.peer_certificate(session))
2320
except (TypeError, gnutls.Error) as error:
2321
logger.warning("Bad certificate: %s", error)
2323
logger.debug("Fingerprint: %s", fpr)
2326
client = ProxyClient(child_pipe, key_id, fpr,
1349
fpr = self.fingerprint(self.peer_certificate
1352
gnutls.errors.GNUTLSError) as error:
1353
logger.warning("Bad certificate: %s", error)
1355
logger.debug("Fingerprint: %s", fpr)
1358
client = ProxyClient(child_pipe, fpr,
2327
1359
self.client_address)
2328
1360
except KeyError:
2331
1363
if client.approval_delay:
2332
1364
delay = client.approval_delay
2333
1365
client.approvals_pending += 1
2334
1366
approval_required = True
2337
1369
if not client.enabled:
2338
1370
logger.info("Client %s is disabled",
2340
1372
if self.server.use_dbus:
2341
1373
# Emit D-Bus signal
2342
1374
client.Rejected("Disabled")
2345
if client.approved or not client.approval_delay:
2346
# We are approved or approval is disabled
1377
if client._approved or not client.approval_delay:
1378
#We are approved or approval is disabled
2348
elif client.approved is None:
1380
elif client._approved is None:
2349
1381
logger.info("Client %s needs approval",
2351
1383
if self.server.use_dbus:
2352
1384
# Emit D-Bus signal
2353
1385
client.NeedApproval(
2354
client.approval_delay.total_seconds()
2355
* 1000, client.approved_by_default)
1386
client.approval_delay_milliseconds(),
1387
client.approved_by_default)
2357
1389
logger.warning("Client %s was not approved",
2382
1416
delay -= time2 - time
2385
session.send(client.secret)
2386
except gnutls.Error as error:
2387
logger.warning("gnutls send failed",
1419
while sent_size < len(client.secret):
1421
sent = session.send(client.secret[sent_size:])
1422
except gnutls.errors.GNUTLSError as error:
1423
logger.warning("gnutls send failed")
1425
logger.debug("Sent: %d, remaining: %d",
1426
sent, len(client.secret)
1427
- (sent_size + sent))
2391
1430
logger.info("Sending secret to %s", client.name)
2392
# bump the timeout using extended_timeout
2393
client.bump_timeout(client.extended_timeout)
1431
# bump the timeout as if seen
1432
client.checked_ok(client.extended_timeout)
2394
1433
if self.server.use_dbus:
2395
1434
# Emit D-Bus signal
2396
1435
client.GotSecret()
2399
1438
if approval_required:
2400
1439
client.approvals_pending -= 1
2403
except gnutls.Error as error:
2404
logger.warning("GnuTLS bye failed",
1442
except gnutls.errors.GNUTLSError as error:
1443
logger.warning("GnuTLS bye failed")
2408
1446
def peer_certificate(session):
2409
"Return the peer's certificate as a bytestring"
2411
cert_type = gnutls.certificate_type_get2(session._c_object,
2413
except AttributeError:
2414
cert_type = gnutls.certificate_type_get(session._c_object)
2415
if gnutls.has_rawpk:
2416
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2418
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2419
# If not a valid certificate type...
2420
if cert_type not in valid_cert_types:
2421
logger.info("Cert type %r not in %r", cert_type,
2423
# ...return invalid data
1447
"Return the peer's OpenPGP certificate as a bytestring"
1448
# If not an OpenPGP certificate...
1449
if (gnutls.library.functions
1450
.gnutls_certificate_type_get(session._c_object)
1451
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1452
# ...do the normal thing
1453
return session.peer_certificate
2425
1454
list_size = ctypes.c_uint(1)
2426
cert_list = (gnutls.certificate_get_peers
1455
cert_list = (gnutls.library.functions
1456
.gnutls_certificate_get_peers
2427
1457
(session._c_object, ctypes.byref(list_size)))
2428
1458
if not bool(cert_list) and list_size.value != 0:
2429
raise gnutls.Error("error getting peer certificate")
1459
raise gnutls.errors.GNUTLSError("error getting peer"
2430
1461
if list_size.value == 0:
2432
1463
cert = cert_list[0]
2433
1464
return ctypes.string_at(cert.data, cert.size)
2436
def key_id(certificate):
2437
"Convert a certificate bytestring to a hexdigit key ID"
2438
# New GnuTLS "datum" with the public key
2439
datum = gnutls.datum_t(
2440
ctypes.cast(ctypes.c_char_p(certificate),
2441
ctypes.POINTER(ctypes.c_ubyte)),
2442
ctypes.c_uint(len(certificate)))
2443
# XXX all these need to be created in the gnutls "module"
2444
# New empty GnuTLS certificate
2445
pubkey = gnutls.pubkey_t()
2446
gnutls.pubkey_init(ctypes.byref(pubkey))
2447
# Import the raw public key into the certificate
2448
gnutls.pubkey_import(pubkey,
2449
ctypes.byref(datum),
2450
gnutls.X509_FMT_DER)
2451
# New buffer for the key ID
2452
buf = ctypes.create_string_buffer(32)
2453
buf_len = ctypes.c_size_t(len(buf))
2454
# Get the key ID from the raw public key into the buffer
2455
gnutls.pubkey_get_key_id(pubkey,
2456
gnutls.KEYID_USE_SHA256,
2457
ctypes.cast(ctypes.byref(buf),
2458
ctypes.POINTER(ctypes.c_ubyte)),
2459
ctypes.byref(buf_len))
2460
# Deinit the certificate
2461
gnutls.pubkey_deinit(pubkey)
2463
# Convert the buffer to a Python bytestring
2464
key_id = ctypes.string_at(buf, buf_len.value)
2465
# Convert the bytestring to hexadecimal notation
2466
hex_key_id = binascii.hexlify(key_id).upper()
2470
1467
def fingerprint(openpgp):
2471
1468
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2472
1469
# New GnuTLS "datum" with the OpenPGP public key
2473
datum = gnutls.datum_t(
2474
ctypes.cast(ctypes.c_char_p(openpgp),
2475
ctypes.POINTER(ctypes.c_ubyte)),
2476
ctypes.c_uint(len(openpgp)))
1470
datum = (gnutls.library.types
1471
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1474
ctypes.c_uint(len(openpgp))))
2477
1475
# New empty GnuTLS certificate
2478
crt = gnutls.openpgp_crt_t()
2479
gnutls.openpgp_crt_init(ctypes.byref(crt))
1476
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1477
(gnutls.library.functions
1478
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2480
1479
# Import the OpenPGP public key into the certificate
2481
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2482
gnutls.OPENPGP_FMT_RAW)
1480
(gnutls.library.functions
1481
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1482
gnutls.library.constants
1483
.GNUTLS_OPENPGP_FMT_RAW))
2483
1484
# Verify the self signature in the key
2484
1485
crtverify = ctypes.c_uint()
2485
gnutls.openpgp_crt_verify_self(crt, 0,
2486
ctypes.byref(crtverify))
1486
(gnutls.library.functions
1487
.gnutls_openpgp_crt_verify_self(crt, 0,
1488
ctypes.byref(crtverify)))
2487
1489
if crtverify.value != 0:
2488
gnutls.openpgp_crt_deinit(crt)
2489
raise gnutls.CertificateSecurityError(code
1490
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1491
raise (gnutls.errors.CertificateSecurityError
2491
1493
# New buffer for the fingerprint
2492
1494
buf = ctypes.create_string_buffer(20)
2493
1495
buf_len = ctypes.c_size_t()
2494
1496
# Get the fingerprint from the certificate into the buffer
2495
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2496
ctypes.byref(buf_len))
1497
(gnutls.library.functions
1498
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1499
ctypes.byref(buf_len)))
2497
1500
# Deinit the certificate
2498
gnutls.openpgp_crt_deinit(crt)
1501
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2499
1502
# Convert the buffer to a Python bytestring
2500
1503
fpr = ctypes.string_at(buf, buf_len.value)
2501
1504
# Convert the bytestring to hexadecimal notation
2502
hex_fpr = binascii.hexlify(fpr).upper()
1505
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2506
class MultiprocessingMixIn:
1509
class MultiprocessingMixIn(object):
2507
1510
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2509
1511
def sub_process_main(self, request, address):
2511
1513
self.finish_request(request, address)
2513
1515
self.handle_error(request, address)
2514
1516
self.close_request(request)
2516
1518
def process_request(self, request, address):
2517
1519
"""Start a new process to process the request."""
2518
proc = multiprocessing.Process(target=self.sub_process_main,
2519
args=(request, address))
1520
proc = multiprocessing.Process(target = self.sub_process_main,
2524
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1527
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2525
1528
""" adds a pipe to the MixIn """
2527
1529
def process_request(self, request, client_address):
2528
1530
"""Overrides and wraps the original process_request().
2530
1532
This function creates a new pipe in self.pipe
2532
1534
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2534
1536
proc = MultiprocessingMixIn.process_request(self, request,
2535
1537
client_address)
2536
1538
self.child_pipe.close()
2537
1539
self.add_pipe(parent_pipe, proc)
2539
1541
def add_pipe(self, parent_pipe, proc):
2540
1542
"""Dummy function; override as necessary"""
2541
raise NotImplementedError()
1543
raise NotImplementedError
2544
1546
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2545
socketserver.TCPServer):
1547
socketserver.TCPServer, object):
2546
1548
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2549
1551
enabled: Boolean; whether this server is activated yet
2550
1552
interface: None or a network interface name (string)
2551
1553
use_ipv6: Boolean; to use IPv6 or not
2554
1555
def __init__(self, server_address, RequestHandlerClass,
2558
"""If socketfd is set, use that file descriptor instead of
2559
creating a new one with socket.socket().
1556
interface=None, use_ipv6=True):
2561
1557
self.interface = interface
2563
1559
self.address_family = socket.AF_INET6
2564
if socketfd is not None:
2565
# Save the file descriptor
2566
self.socketfd = socketfd
2567
# Save the original socket.socket() function
2568
self.socket_socket = socket.socket
2570
# To implement --socket, we monkey patch socket.socket.
2572
# (When socketserver.TCPServer is a new-style class, we
2573
# could make self.socket into a property instead of monkey
2574
# patching socket.socket.)
2576
# Create a one-time-only replacement for socket.socket()
2577
@functools.wraps(socket.socket)
2578
def socket_wrapper(*args, **kwargs):
2579
# Restore original function so subsequent calls are
2581
socket.socket = self.socket_socket
2582
del self.socket_socket
2583
# This time only, return a new socket object from the
2584
# saved file descriptor.
2585
return socket.fromfd(self.socketfd, *args, **kwargs)
2586
# Replace socket.socket() function with wrapper
2587
socket.socket = socket_wrapper
2588
# The socketserver.TCPServer.__init__ will call
2589
# socket.socket(), which might be our replacement,
2590
# socket_wrapper(), if socketfd was set.
2591
1560
socketserver.TCPServer.__init__(self, server_address,
2592
1561
RequestHandlerClass)
2594
1562
def server_bind(self):
2595
1563
"""This overrides the normal server_bind() function
2596
1564
to bind to an interface if one was specified, and also NOT to
2597
1565
bind to an address or port if they were not specified."""
2598
global SO_BINDTODEVICE
2599
1566
if self.interface is not None:
2600
1567
if SO_BINDTODEVICE is None:
2601
# Fall back to a hard-coded value which seems to be
2603
logger.warning("SO_BINDTODEVICE not found, trying 25")
2604
SO_BINDTODEVICE = 25
2606
self.socket.setsockopt(
2607
socket.SOL_SOCKET, SO_BINDTODEVICE,
2608
(self.interface + "\0").encode("utf-8"))
2609
except socket.error as error:
2610
if error.errno == errno.EPERM:
2611
logger.error("No permission to bind to"
2612
" interface %s", self.interface)
2613
elif error.errno == errno.ENOPROTOOPT:
2614
logger.error("SO_BINDTODEVICE not available;"
2615
" cannot bind to interface %s",
2617
elif error.errno == errno.ENODEV:
2618
logger.error("Interface %s does not exist,"
2619
" cannot bind", self.interface)
1568
logger.error("SO_BINDTODEVICE does not exist;"
1569
" cannot bind to interface %s",
1573
self.socket.setsockopt(socket.SOL_SOCKET,
1577
except socket.error as error:
1578
if error[0] == errno.EPERM:
1579
logger.error("No permission to"
1580
" bind to interface %s",
1582
elif error[0] == errno.ENOPROTOOPT:
1583
logger.error("SO_BINDTODEVICE not available;"
1584
" cannot bind to interface %s",
2622
1588
# Only bind(2) the socket if we really need to.
2623
1589
if self.server_address[0] or self.server_address[1]:
2624
if self.server_address[1]:
2625
self.allow_reuse_address = True
2626
1590
if not self.server_address[0]:
2627
1591
if self.address_family == socket.AF_INET6:
2628
any_address = "::" # in6addr_any
1592
any_address = "::" # in6addr_any
2630
any_address = "0.0.0.0" # INADDR_ANY
1594
any_address = socket.INADDR_ANY
2631
1595
self.server_address = (any_address,
2632
1596
self.server_address[1])
2633
1597
elif not self.server_address[1]:
2634
self.server_address = (self.server_address[0], 0)
1598
self.server_address = (self.server_address[0],
2635
1600
# if self.interface:
2636
1601
# self.server_address = (self.server_address[0],
2964
1846
parser.add_argument("--no-dbus", action="store_false",
2965
1847
dest="use_dbus", help="Do not provide D-Bus"
2966
" system bus interface", default=None)
1848
" system bus interface")
2967
1849
parser.add_argument("--no-ipv6", action="store_false",
2968
dest="use_ipv6", help="Do not use IPv6",
2970
parser.add_argument("--no-restore", action="store_false",
2971
dest="restore", help="Do not restore stored"
2972
" state", default=None)
2973
parser.add_argument("--socket", type=int,
2974
help="Specify a file descriptor to a network"
2975
" socket to use instead of creating one")
2976
parser.add_argument("--statedir", metavar="DIR",
2977
help="Directory to save/restore state in")
2978
parser.add_argument("--foreground", action="store_true",
2979
help="Run in foreground", default=None)
2980
parser.add_argument("--no-zeroconf", action="store_false",
2981
dest="zeroconf", help="Do not use Zeroconf",
1850
dest="use_ipv6", help="Do not use IPv6")
2984
1851
options = parser.parse_args()
2986
1858
# Default values for config file for server-global settings
2987
if gnutls.has_rawpk:
2988
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2989
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2991
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2992
":+SIGN-DSA-SHA256")
2993
server_defaults = {"interface": "",
2997
"priority": priority,
2998
"servicename": "Mandos",
3004
"statedir": "/var/lib/mandos",
3005
"foreground": "False",
1859
server_defaults = { "interface": "",
1864
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1865
"servicename": "Mandos",
3010
1871
# Parse config file for server-global settings
3011
server_config = configparser.ConfigParser(server_defaults)
1872
server_config = configparser.SafeConfigParser(server_defaults)
3012
1873
del server_defaults
3013
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3014
# Convert the ConfigParser object to a dict
1874
server_config.read(os.path.join(options.configdir,
1876
# Convert the SafeConfigParser object to a dict
3015
1877
server_settings = server_config.defaults()
3016
1878
# Use the appropriate methods on the non-string config options
3017
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3018
"foreground", "zeroconf"):
1879
for option in ("debug", "use_dbus", "use_ipv6"):
3019
1880
server_settings[option] = server_config.getboolean("DEFAULT",
3021
1882
if server_settings["port"]:
3022
1883
server_settings["port"] = server_config.getint("DEFAULT",
3024
if server_settings["socket"]:
3025
server_settings["socket"] = server_config.getint("DEFAULT",
3027
# Later, stdin will, and stdout and stderr might, be dup'ed
3028
# over with an opened os.devnull. But we don't want this to
3029
# happen with a supplied network socket.
3030
if 0 <= server_settings["socket"] <= 2:
3031
server_settings["socket"] = os.dup(server_settings
3033
1885
del server_config
3035
1887
# Override the settings from the config file with command line
3036
1888
# options, if set.
3037
1889
for option in ("interface", "address", "port", "debug",
3038
"priority", "servicename", "configdir", "use_dbus",
3039
"use_ipv6", "debuglevel", "restore", "statedir",
3040
"socket", "foreground", "zeroconf"):
1890
"priority", "servicename", "configdir",
1891
"use_dbus", "use_ipv6", "debuglevel"):
3041
1892
value = getattr(options, option)
3042
1893
if value is not None:
3043
1894
server_settings[option] = value
3045
1896
# Force all strings to be unicode
3046
1897
for option in server_settings.keys():
3047
if isinstance(server_settings[option], bytes):
3048
server_settings[option] = (server_settings[option]
3050
# Force all boolean options to be boolean
3051
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3052
"foreground", "zeroconf"):
3053
server_settings[option] = bool(server_settings[option])
3054
# Debug implies foreground
3055
if server_settings["debug"]:
3056
server_settings["foreground"] = True
1898
if type(server_settings[option]) is str:
1899
server_settings[option] = unicode(server_settings[option])
3057
1900
# Now we have our good server settings in "server_settings"
3059
1902
##################################################################
3061
if (not server_settings["zeroconf"]
3062
and not (server_settings["port"]
3063
or server_settings["socket"] != "")):
3064
parser.error("Needs port or socket to work without Zeroconf")
3066
1904
# For convenience
3067
1905
debug = server_settings["debug"]
3068
1906
debuglevel = server_settings["debuglevel"]
3069
1907
use_dbus = server_settings["use_dbus"]
3070
1908
use_ipv6 = server_settings["use_ipv6"]
3071
stored_state_path = os.path.join(server_settings["statedir"],
3073
foreground = server_settings["foreground"]
3074
zeroconf = server_settings["zeroconf"]
3077
initlogger(debug, logging.DEBUG)
3082
level = getattr(logging, debuglevel.upper())
3083
initlogger(debug, level)
3085
1910
if server_settings["servicename"] != "Mandos":
3086
syslogger.setFormatter(
3087
logging.Formatter('Mandos ({}) [%(process)d]:'
3088
' %(levelname)s: %(message)s'.format(
3089
server_settings["servicename"])))
1911
syslogger.setFormatter(logging.Formatter
1912
('Mandos (%s) [%%(process)d]:'
1913
' %%(levelname)s: %%(message)s'
1914
% server_settings["servicename"]))
3091
1916
# Parse config file with clients
3092
client_config = configparser.ConfigParser(Client.client_defaults)
1917
client_defaults = { "timeout": "5m",
1918
"extended_timeout": "15m",
1920
"checker": "fping -q -- %%(host)s",
1922
"approval_delay": "0s",
1923
"approval_duration": "1s",
1925
client_config = configparser.SafeConfigParser(client_defaults)
3093
1926
client_config.read(os.path.join(server_settings["configdir"],
3094
1927
"clients.conf"))
3096
1929
global mandos_dbus_service
3097
1930
mandos_dbus_service = None
3100
if server_settings["socket"] != "":
3101
socketfd = server_settings["socket"]
3102
tcp_server = MandosServer(
3103
(server_settings["address"], server_settings["port"]),
3105
interface=(server_settings["interface"] or None),
3107
gnutls_priority=server_settings["priority"],
3111
pidfilename = "/run/mandos.pid"
3112
if not os.path.isdir("/run/."):
3113
pidfilename = "/var/run/mandos.pid"
3116
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3117
except IOError as e:
3118
logger.error("Could not open file %r", pidfilename,
3121
for name, group in (("_mandos", "_mandos"),
3122
("mandos", "mandos"),
3123
("nobody", "nogroup")):
3125
uid = pwd.getpwnam(name).pw_uid
3126
gid = pwd.getpwnam(group).pw_gid
1932
tcp_server = MandosServer((server_settings["address"],
1933
server_settings["port"]),
1935
interface=(server_settings["interface"]
1939
server_settings["priority"],
1942
pidfilename = "/var/run/mandos.pid"
1944
pidfile = open(pidfilename, "w")
1946
logger.error("Could not open file %r", pidfilename)
1949
uid = pwd.getpwnam("_mandos").pw_uid
1950
gid = pwd.getpwnam("_mandos").pw_gid
1953
uid = pwd.getpwnam("mandos").pw_uid
1954
gid = pwd.getpwnam("mandos").pw_gid
3128
1955
except KeyError:
1957
uid = pwd.getpwnam("nobody").pw_uid
1958
gid = pwd.getpwnam("nobody").pw_gid
3137
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3139
1965
except OSError as error:
3140
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3141
.format(uid, gid, os.strerror(error.errno)))
3142
if error.errno != errno.EPERM:
1966
if error[0] != errno.EPERM:
1969
if not debug and not debuglevel:
1970
syslogger.setLevel(logging.WARNING)
1971
console.setLevel(logging.WARNING)
1973
level = getattr(logging, debuglevel.upper())
1974
syslogger.setLevel(level)
1975
console.setLevel(level)
3146
1978
# Enable all possible GnuTLS debugging
3148
1980
# "Use a log level over 10 to enable all debugging options."
3149
1981
# - GnuTLS manual
3150
gnutls.global_set_log_level(11)
1982
gnutls.library.functions.gnutls_global_set_log_level(11)
1984
@gnutls.library.types.gnutls_log_func
3153
1985
def debug_gnutls(level, string):
3154
1986
logger.debug("GnuTLS: %s", string[:-1])
3156
gnutls.global_set_log_function(debug_gnutls)
1988
(gnutls.library.functions
1989
.gnutls_global_set_log_function(debug_gnutls))
3158
1991
# Redirect stdin so all checkers get /dev/null
3159
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1992
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3160
1993
os.dup2(null, sys.stdin.fileno())
1997
# No console logging
1998
logger.removeHandler(console)
3164
2000
# Need to fork before connecting to D-Bus
3166
2002
# Close all input and output, do double fork, etc.
3169
if gi.version_info < (3, 10, 2):
3170
# multiprocessing will use threads, so before we use GLib we
3171
# need to inform GLib that threads will be used.
3174
2005
global main_loop
3175
2006
# From the Avahi example code
3176
DBusGMainLoop(set_as_default=True)
3177
main_loop = GLib.MainLoop()
2007
DBusGMainLoop(set_as_default=True )
2008
main_loop = gobject.MainLoop()
3178
2009
bus = dbus.SystemBus()
3179
2010
# End of Avahi example code
3182
2013
bus_name = dbus.service.BusName("se.recompile.Mandos",
3185
old_bus_name = dbus.service.BusName(
3186
"se.bsnet.fukt.Mandos", bus,
3188
except dbus.exceptions.DBusException as e:
3189
logger.error("Disabling D-Bus:", exc_info=e)
2014
bus, do_not_queue=True)
2015
old_bus_name = (dbus.service.BusName
2016
("se.bsnet.fukt.Mandos", bus,
2018
except dbus.exceptions.NameExistsException as e:
2019
logger.error(unicode(e) + ", disabling D-Bus")
3190
2020
use_dbus = False
3191
2021
server_settings["use_dbus"] = False
3192
2022
tcp_server.use_dbus = False
3194
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3195
service = AvahiServiceToSyslog(
3196
name=server_settings["servicename"],
3197
servicetype="_mandos._tcp",
3200
if server_settings["interface"]:
3201
service.interface = if_nametoindex(
3202
server_settings["interface"].encode("utf-8"))
2023
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2024
service = AvahiService(name = server_settings["servicename"],
2025
servicetype = "_mandos._tcp",
2026
protocol = protocol, bus = bus)
2027
if server_settings["interface"]:
2028
service.interface = (if_nametoindex
2029
(str(server_settings["interface"])))
3204
2031
global multiprocessing_manager
3205
2032
multiprocessing_manager = multiprocessing.Manager()
3207
2034
client_class = Client
3209
client_class = functools.partial(ClientDBus, bus=bus)
3211
client_settings = Client.config_parser(client_config)
3212
old_client_settings = {}
3215
# This is used to redirect stdout and stderr for checker processes
3217
wnull = open(os.devnull, "w") # A writable /dev/null
3218
# Only used if server is running in foreground but not in debug
3220
if debug or not foreground:
3223
# Get client data and settings from last running state.
3224
if server_settings["restore"]:
3226
with open(stored_state_path, "rb") as stored_state:
3227
if sys.version_info.major == 2:
3228
clients_data, old_client_settings = pickle.load(
3231
bytes_clients_data, bytes_old_client_settings = (
3232
pickle.load(stored_state, encoding="bytes"))
3233
# Fix bytes to strings
3236
clients_data = {(key.decode("utf-8")
3237
if isinstance(key, bytes)
3240
bytes_clients_data.items()}
3241
del bytes_clients_data
3242
for key in clients_data:
3243
value = {(k.decode("utf-8")
3244
if isinstance(k, bytes) else k): v
3246
clients_data[key].items()}
3247
clients_data[key] = value
3249
value["client_structure"] = [
3251
if isinstance(s, bytes)
3253
value["client_structure"]]
3255
for k in ("name", "host"):
3256
if isinstance(value[k], bytes):
3257
value[k] = value[k].decode("utf-8")
3258
if "key_id" not in value:
3259
value["key_id"] = ""
3260
elif "fingerprint" not in value:
3261
value["fingerprint"] = ""
3262
# old_client_settings
3264
old_client_settings = {
3265
(key.decode("utf-8")
3266
if isinstance(key, bytes)
3269
bytes_old_client_settings.items()}
3270
del bytes_old_client_settings
3272
for value in old_client_settings.values():
3273
if isinstance(value["host"], bytes):
3274
value["host"] = (value["host"]
3276
os.remove(stored_state_path)
3277
except IOError as e:
3278
if e.errno == errno.ENOENT:
3279
logger.warning("Could not load persistent state:"
3280
" {}".format(os.strerror(e.errno)))
3282
logger.critical("Could not load persistent state:",
3285
except EOFError as e:
3286
logger.warning("Could not load persistent state: "
3290
with PGPEngine() as pgp:
3291
for client_name, client in clients_data.items():
3292
# Skip removed clients
3293
if client_name not in client_settings:
3296
# Decide which value to use after restoring saved state.
3297
# We have three different values: Old config file,
3298
# new config file, and saved state.
3299
# New config value takes precedence if it differs from old
3300
# config value, otherwise use saved state.
3301
for name, value in client_settings[client_name].items():
3303
# For each value in new config, check if it
3304
# differs from the old config value (Except for
3305
# the "secret" attribute)
3306
if (name != "secret"
3308
old_client_settings[client_name][name])):
3309
client[name] = value
3313
# Clients who has passed its expire date can still be
3314
# enabled if its last checker was successful. A Client
3315
# whose checker succeeded before we stored its state is
3316
# assumed to have successfully run all checkers during
3318
if client["enabled"]:
3319
if datetime.datetime.utcnow() >= client["expires"]:
3320
if not client["last_checked_ok"]:
3322
"disabling client {} - Client never "
3323
"performed a successful checker".format(
3325
client["enabled"] = False
3326
elif client["last_checker_status"] != 0:
3328
"disabling client {} - Client last"
3329
" checker failed with error code"
3332
client["last_checker_status"]))
3333
client["enabled"] = False
3335
client["expires"] = (
3336
datetime.datetime.utcnow()
3337
+ client["timeout"])
3338
logger.debug("Last checker succeeded,"
3339
" keeping {} enabled".format(
2036
client_class = functools.partial(ClientDBusTransitional,
2038
def client_config_items(config, section):
2039
special_settings = {
2040
"approved_by_default":
2041
lambda: config.getboolean(section,
2042
"approved_by_default"),
2044
for name, value in config.items(section):
3342
client["secret"] = pgp.decrypt(
3343
client["encrypted_secret"],
3344
client_settings[client_name]["secret"])
3346
# If decryption fails, we use secret from new settings
3347
logger.debug("Failed to decrypt {} old secret".format(
3349
client["secret"] = (client_settings[client_name]
3352
# Add/remove clients based on new changes made to config
3353
for client_name in (set(old_client_settings)
3354
- set(client_settings)):
3355
del clients_data[client_name]
3356
for client_name in (set(client_settings)
3357
- set(old_client_settings)):
3358
clients_data[client_name] = client_settings[client_name]
3360
# Create all client objects
3361
for client_name, client in clients_data.items():
3362
tcp_server.clients[client_name] = client_class(
3365
server_settings=server_settings)
2046
yield (name, special_settings[name]())
2050
tcp_server.clients.update(set(
2051
client_class(name = section,
2052
config= dict(client_config_items(
2053
client_config, section)))
2054
for section in client_config.sections()))
3367
2055
if not tcp_server.clients:
3368
2056
logger.warning("No clients defined")
3371
if pidfile is not None:
3375
print(pid, file=pidfile)
3377
logger.error("Could not write to file %r with PID %d",
2062
pidfile.write(str(pid) + "\n".encode("utf-8"))
2065
logger.error("Could not write to file %r with PID %d",
2068
# "pidfile" was never created
3380
2070
del pidfilename
3382
for termsig in (signal.SIGHUP, signal.SIGTERM):
3383
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3384
lambda: main_loop.quit() and False)
2072
signal.signal(signal.SIGINT, signal.SIG_IGN)
2074
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2075
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3388
@alternate_dbus_interfaces(
3389
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3390
class MandosDBusService(DBusObjectWithObjectManager):
2078
class MandosDBusService(dbus.service.Object):
3391
2079
"""A D-Bus proxy object"""
3393
2080
def __init__(self):
3394
2081
dbus.service.Object.__init__(self, bus, "/")
3396
2082
_interface = "se.recompile.Mandos"
3398
2084
@dbus.service.signal(_interface, signature="o")
3399
2085
def ClientAdded(self, objpath):
3403
2089
@dbus.service.signal(_interface, signature="ss")
3404
def ClientNotFound(self, key_id, address):
2090
def ClientNotFound(self, fingerprint, address):
3408
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3410
2094
@dbus.service.signal(_interface, signature="os")
3411
2095
def ClientRemoved(self, objpath, name):
3415
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3417
2099
@dbus.service.method(_interface, out_signature="ao")
3418
2100
def GetAllClients(self):
3420
return dbus.Array(c.dbus_object_path for c in
3421
tcp_server.clients.values())
3423
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2102
return dbus.Array(c.dbus_object_path
2103
for c in tcp_server.clients)
3425
2105
@dbus.service.method(_interface,
3426
2106
out_signature="a{oa{sv}}")
3427
2107
def GetAllClientsWithProperties(self):
3429
2109
return dbus.Dictionary(
3430
{c.dbus_object_path: c.GetAll(
3431
"se.recompile.Mandos.Client")
3432
for c in tcp_server.clients.values()},
2110
((c.dbus_object_path, c.GetAll(""))
2111
for c in tcp_server.clients),
3433
2112
signature="oa{sv}")
3435
2114
@dbus.service.method(_interface, in_signature="o")
3436
2115
def RemoveClient(self, object_path):
3438
for c in tcp_server.clients.values():
2117
for c in tcp_server.clients:
3439
2118
if c.dbus_object_path == object_path:
3440
del tcp_server.clients[c.name]
2119
tcp_server.clients.remove(c)
3441
2120
c.remove_from_connection()
3442
# Don't signal the disabling
2121
# Don't signal anything except ClientRemoved
3443
2122
c.disable(quiet=True)
3444
# Emit D-Bus signal for removal
3445
self.client_removed_signal(c)
2124
self.ClientRemoved(object_path, c.name)
3447
2126
raise KeyError(object_path)
3451
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3452
out_signature="a{oa{sa{sv}}}")
3453
def GetManagedObjects(self):
3455
return dbus.Dictionary(
3456
{client.dbus_object_path:
3458
{interface: client.GetAll(interface)
3460
client._get_all_interface_names()})
3461
for client in tcp_server.clients.values()})
3463
def client_added_signal(self, client):
3464
"""Send the new standard signal and the old signal"""
3466
# New standard signal
3467
self.InterfacesAdded(
3468
client.dbus_object_path,
3470
{interface: client.GetAll(interface)
3472
client._get_all_interface_names()}))
3474
self.ClientAdded(client.dbus_object_path)
3476
def client_removed_signal(self, client):
3477
"""Send the new standard signal and the old signal"""
3479
# New standard signal
3480
self.InterfacesRemoved(
3481
client.dbus_object_path,
3482
client._get_all_interface_names())
3484
self.ClientRemoved(client.dbus_object_path,
3487
mandos_dbus_service = MandosDBusService()
3489
# Save modules to variables to exempt the modules from being
3490
# unloaded before the function registered with atexit() is run.
3491
mp = multiprocessing
2130
class MandosDBusServiceTransitional(MandosDBusService):
2131
__metaclass__ = AlternateDBusNamesMetaclass
2132
mandos_dbus_service = MandosDBusServiceTransitional()
3495
2135
"Cleanup function; run on exit"
3499
mp.active_children()
3501
if not (tcp_server.clients or client_settings):
3504
# Store client before exiting. Secrets are encrypted with key
3505
# based on what config file has. If config file is
3506
# removed/edited, old secret will thus be unrecovable.
3508
with PGPEngine() as pgp:
3509
for client in tcp_server.clients.values():
3510
key = client_settings[client.name]["secret"]
3511
client.encrypted_secret = pgp.encrypt(client.secret,
3515
# A list of attributes that can not be pickled
3517
exclude = {"bus", "changedstate", "secret",
3518
"checker", "server_settings"}
3519
for name, typ in inspect.getmembers(dbus.service
3523
client_dict["encrypted_secret"] = (client
3525
for attr in client.client_structure:
3526
if attr not in exclude:
3527
client_dict[attr] = getattr(client, attr)
3529
clients[client.name] = client_dict
3530
del client_settings[client.name]["secret"]
3533
with tempfile.NamedTemporaryFile(
3537
dir=os.path.dirname(stored_state_path),
3538
delete=False) as stored_state:
3539
pickle.dump((clients, client_settings), stored_state,
3541
tempname = stored_state.name
3542
os.rename(tempname, stored_state_path)
3543
except (IOError, OSError) as e:
3549
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3550
logger.warning("Could not save persistent state: {}"
3551
.format(os.strerror(e.errno)))
3553
logger.warning("Could not save persistent state:",
3557
# Delete all clients, and settings from config
2138
multiprocessing.active_children()
3558
2139
while tcp_server.clients:
3559
name, client = tcp_server.clients.popitem()
2140
client = tcp_server.clients.pop()
3561
2142
client.remove_from_connection()
3562
# Don't signal the disabling
2143
client.disable_hook = None
2144
# Don't signal anything except ClientRemoved
3563
2145
client.disable(quiet=True)
3564
# Emit D-Bus signal for removal
3566
mandos_dbus_service.client_removed_signal(client)
3567
client_settings.clear()
2148
mandos_dbus_service.ClientRemoved(client
3569
2152
atexit.register(cleanup)
3571
for client in tcp_server.clients.values():
2154
for client in tcp_server.clients:
3573
# Emit D-Bus signal for adding
3574
mandos_dbus_service.client_added_signal(client)
3575
# Need to initiate checking of clients
3577
client.init_checker()
2157
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3579
2160
tcp_server.enable()
3580
2161
tcp_server.server_activate()
3582
2163
# Find out what port we got
3584
service.port = tcp_server.socket.getsockname()[1]
2164
service.port = tcp_server.socket.getsockname()[1]
3586
2166
logger.info("Now listening on address %r, port %d,"
3587
" flowinfo %d, scope_id %d",
3588
*tcp_server.socket.getsockname())
2167
" flowinfo %d, scope_id %d"
2168
% tcp_server.socket.getsockname())
3590
logger.info("Now listening on address %r, port %d",
3591
*tcp_server.socket.getsockname())
3593
# service.interface = tcp_server.socket.getsockname()[3]
2170
logger.info("Now listening on address %r, port %d"
2171
% tcp_server.socket.getsockname())
2173
#service.interface = tcp_server.socket.getsockname()[3]
3597
# From the Avahi example code
3600
except dbus.exceptions.DBusException as error:
3601
logger.critical("D-Bus Exception", exc_info=error)
3604
# End of Avahi example code
3607
GLib.IOChannel.unix_new(tcp_server.fileno()),
3608
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3609
lambda *args, **kwargs: (tcp_server.handle_request
3610
(*args[2:], **kwargs) or True))
2176
# From the Avahi example code
2179
except dbus.exceptions.DBusException as error:
2180
logger.critical("DBusException: %s", error)
2183
# End of Avahi example code
2185
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2186
lambda *args, **kwargs:
2187
(tcp_server.handle_request
2188
(*args[2:], **kwargs) or True))
3612
2190
logger.debug("Starting main loop")
3613
2191
main_loop.run()
3614
2192
except AvahiError as error:
3615
logger.critical("Avahi Error", exc_info=error)
2193
logger.critical("AvahiError: %s", error)
3618
2196
except KeyboardInterrupt: