70
import cPickle as pickle
63
import cPickle as pickle
73
64
import multiprocessing
85
70
import dbus.service
87
from gi.repository import GLib
88
73
from dbus.mainloop.glib import DBusGMainLoop
91
76
import xml.dom.minidom
94
if sys.version_info.major == 2:
98
# Add collections.abc.Callable if it does not exist
100
collections.abc.Callable
101
except AttributeError:
103
Callable = collections.Callable
104
collections.abc = abc
107
# Add shlex.quote if it does not exist
110
except AttributeError:
111
shlex.quote = re.escape
113
# Show warnings by default
114
if not sys.warnoptions:
116
warnings.simplefilter("default")
118
# Try to find the value of SO_BINDTODEVICE:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
122
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
123
82
except AttributeError:
125
# This is where SO_BINDTODEVICE was up to and including Python
127
84
from IN import SO_BINDTODEVICE
128
85
except ImportError:
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
141
SO_BINDTODEVICE = None
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
86
SO_BINDTODEVICE = None
147
89
stored_state_file = "clients.pickle"
149
91
logger = logging.getLogger()
150
logging.captureWarnings(True) # Show warnings via the logging system
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
156
100
except (OSError, AttributeError):
158
101
def if_nametoindex(interface):
159
102
"Get an interface index the hard way, i.e. using fcntl()"
160
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
161
104
with contextlib.closing(socket.socket()) as s:
162
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
106
struct.pack(str("16s16x"),
108
interface_index = struct.unpack(str("I"),
165
110
return interface_index
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
177
return types.FunctionType(func.__code__,
184
113
def initlogger(debug, level=logging.WARNING):
185
114
"""init logger and add loglevel"""
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
191
116
syslogger.setFormatter(logging.Formatter
192
("Mandos [%(process)d]: %(levelname)s:"
117
('Mandos [%(process)d]: %(levelname)s:'
194
119
logger.addHandler(syslogger)
197
122
console = logging.StreamHandler()
198
console.setFormatter(logging.Formatter("%(asctime)s %(name)s"
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
202
127
logger.addHandler(console)
203
128
logger.setLevel(level)
255
168
os.rmdir(self.tempdir)
256
169
self.tempdir = None
258
171
def password_encode(self, password):
259
172
# Passphrase can not be empty and can not contain newlines or
260
173
# NUL bytes. So we prefix it and hex encode it.
261
encoded = b"mandos" + binascii.hexlify(password)
262
if len(encoded) > 2048:
263
# GnuPG can't handle long passwords, so encode differently
264
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
265
.replace(b"\n", b"\\n")
266
.replace(b"\0", b"\\x00"))
174
return b"mandos" + binascii.hexlify(password)
269
176
def encrypt(self, data, password):
270
passphrase = self.password_encode(password)
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
273
passfile.write(passphrase)
275
proc = subprocess.Popen([self.gpg, "--symmetric",
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
283
if proc.returncode != 0:
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
190
self.gnupg.passphrase = None
285
191
return ciphertext
287
193
def decrypt(self, data, password):
288
passphrase = self.password_encode(password)
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
291
passfile.write(passphrase)
293
proc = subprocess.Popen([self.gpg, "--decrypt",
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
301
if proc.returncode != 0:
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
207
self.gnupg.passphrase = None
303
208
return decrypted_plaintext
306
# Pretend that we have an Avahi module
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
332
212
class AvahiError(Exception):
333
213
def __init__(self, value, *args, **kwargs):
334
214
self.value = value
335
return super(AvahiError, self).__init__(value, *args,
215
super(AvahiError, self).__init__(value, *args, **kwargs)
216
def __unicode__(self):
217
return unicode(repr(self.value))
339
219
class AvahiServiceError(AvahiError):
343
222
class AvahiGroupError(AvahiError):
226
class AvahiService(object):
348
227
"""An Avahi (Zeroconf) service.
351
230
interface: integer; avahi.IF_UNSPEC or an interface index.
352
231
Used to optionally bind to the specified interface.
353
name: string; Example: "Mandos"
354
type: string; Example: "_mandos._tcp".
355
See <https://www.iana.org/assignments/service-names-port-numbers>
232
name: string; Example: 'Mandos'
233
type: string; Example: '_mandos._tcp'.
234
See <http://www.dns-sd.org/ServiceTypes.html>
356
235
port: integer; what port to announce
357
236
TXT: list of strings; TXT record for the service
358
237
domain: string; Domain to publish on, default to .local if empty.
517
366
follow_name_owner_changes=True),
518
367
avahi.DBUS_INTERFACE_SERVER)
519
368
self.server.connect_to_signal("StateChanged",
520
self.server_state_changed)
369
self.server_state_changed)
521
370
self.server_state_changed(self.server.GetState())
524
372
class AvahiServiceToSyslog(AvahiService):
525
def rename(self, *args, **kwargs):
526
374
"""Add the new name to the syslog messages"""
527
ret = super(AvahiServiceToSyslog, self).rename(*args,
529
syslogger.setFormatter(logging.Formatter(
530
"Mandos ({}) [%(process)d]: %(levelname)s: %(message)s"
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
535
# Pretend that we have a GnuTLS module
537
"""This isn't so much a class as it is a module-like namespace."""
539
library = ctypes.util.find_library("gnutls")
541
library = ctypes.util.find_library("gnutls-deb0")
542
_library = ctypes.cdll.LoadLibrary(library)
545
# Unless otherwise indicated, the constants and types below are
546
# all from the gnutls/gnutls.h C header file.
557
E_NO_CERTIFICATE_FOUND = -49
562
KEYID_USE_SHA256 = 1 # gnutls/x509.h
563
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
566
class _session_int(ctypes.Structure):
568
session_t = ctypes.POINTER(_session_int)
570
class certificate_credentials_st(ctypes.Structure):
572
certificate_credentials_t = ctypes.POINTER(
573
certificate_credentials_st)
574
certificate_type_t = ctypes.c_int
576
class datum_t(ctypes.Structure):
577
_fields_ = [("data", ctypes.POINTER(ctypes.c_ubyte)),
578
("size", ctypes.c_uint)]
580
class _openpgp_crt_int(ctypes.Structure):
582
openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)
583
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
584
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
585
credentials_type_t = ctypes.c_int
586
transport_ptr_t = ctypes.c_void_p
587
close_request_t = ctypes.c_int
590
class Error(Exception):
591
def __init__(self, message=None, code=None, args=()):
592
# Default usage is by a message string, but if a return
593
# code is passed, convert it to a string with
596
if message is None and code is not None:
597
message = gnutls.strerror(code).decode(
598
"utf-8", errors="replace")
599
return super(gnutls.Error, self).__init__(
602
class CertificateSecurityError(Error):
606
def __init__(self, cls):
609
def from_param(self, obj):
610
if not isinstance(obj, self.cls):
611
raise TypeError("Not of type {}: {!r}"
612
.format(self.cls.__name__, obj))
613
return ctypes.byref(obj.from_param(obj))
615
class CastToVoidPointer:
616
def __init__(self, cls):
619
def from_param(self, obj):
620
if not isinstance(obj, self.cls):
621
raise TypeError("Not of type {}: {!r}"
622
.format(self.cls.__name__, obj))
623
return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)
625
class With_from_param:
627
def from_param(cls, obj):
628
return obj._as_parameter_
631
class Credentials(With_from_param):
633
self._as_parameter_ = gnutls.certificate_credentials_t()
634
gnutls.certificate_allocate_credentials(self)
635
self.type = gnutls.CRD_CERTIFICATE
638
gnutls.certificate_free_credentials(self)
640
class ClientSession(With_from_param):
641
def __init__(self, socket, credentials=None):
642
self._as_parameter_ = gnutls.session_t()
643
gnutls_flags = gnutls.CLIENT
644
if gnutls.check_version(b"3.5.6"):
645
gnutls_flags |= gnutls.NO_TICKETS
647
gnutls_flags |= gnutls.ENABLE_RAWPK
648
gnutls.init(self, gnutls_flags)
650
gnutls.set_default_priority(self)
651
gnutls.transport_set_ptr(self, socket.fileno())
652
gnutls.handshake_set_private_extensions(self, True)
654
if credentials is None:
655
credentials = gnutls.Credentials()
656
gnutls.credentials_set(self, credentials.type,
658
self.credentials = credentials
664
return gnutls.handshake(self)
666
def send(self, data):
670
data_len -= gnutls.record_send(self, data[-data_len:],
674
return gnutls.bye(self, gnutls.SHUT_RDWR)
676
# Error handling functions
677
def _error_code(result):
678
"""A function to raise exceptions on errors, suitable
679
for the "restype" attribute on ctypes functions"""
680
if result >= gnutls.E_SUCCESS:
682
if result == gnutls.E_NO_CERTIFICATE_FOUND:
683
raise gnutls.CertificateSecurityError(code=result)
684
raise gnutls.Error(code=result)
686
def _retry_on_error(result, func, arguments,
687
_error_code=_error_code):
688
"""A function to retry on some errors, suitable
689
for the "errcheck" attribute on ctypes functions"""
690
while result < gnutls.E_SUCCESS:
691
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
692
return _error_code(result)
693
result = func(*arguments)
696
# Unless otherwise indicated, the function declarations below are
697
# all from the gnutls/gnutls.h C header file.
700
priority_set_direct = _library.gnutls_priority_set_direct
701
priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,
702
ctypes.POINTER(ctypes.c_char_p)]
703
priority_set_direct.restype = _error_code
705
init = _library.gnutls_init
706
init.argtypes = [PointerTo(ClientSession), ctypes.c_int]
707
init.restype = _error_code
709
set_default_priority = _library.gnutls_set_default_priority
710
set_default_priority.argtypes = [ClientSession]
711
set_default_priority.restype = _error_code
713
record_send = _library.gnutls_record_send
714
record_send.argtypes = [ClientSession, ctypes.c_void_p,
716
record_send.restype = ctypes.c_ssize_t
717
record_send.errcheck = _retry_on_error
719
certificate_allocate_credentials = (
720
_library.gnutls_certificate_allocate_credentials)
721
certificate_allocate_credentials.argtypes = [
722
PointerTo(Credentials)]
723
certificate_allocate_credentials.restype = _error_code
725
certificate_free_credentials = (
726
_library.gnutls_certificate_free_credentials)
727
certificate_free_credentials.argtypes = [Credentials]
728
certificate_free_credentials.restype = None
730
handshake_set_private_extensions = (
731
_library.gnutls_handshake_set_private_extensions)
732
handshake_set_private_extensions.argtypes = [ClientSession,
734
handshake_set_private_extensions.restype = None
736
credentials_set = _library.gnutls_credentials_set
737
credentials_set.argtypes = [ClientSession, credentials_type_t,
738
CastToVoidPointer(Credentials)]
739
credentials_set.restype = _error_code
741
strerror = _library.gnutls_strerror
742
strerror.argtypes = [ctypes.c_int]
743
strerror.restype = ctypes.c_char_p
745
certificate_type_get = _library.gnutls_certificate_type_get
746
certificate_type_get.argtypes = [ClientSession]
747
certificate_type_get.restype = _error_code
749
certificate_get_peers = _library.gnutls_certificate_get_peers
750
certificate_get_peers.argtypes = [ClientSession,
751
ctypes.POINTER(ctypes.c_uint)]
752
certificate_get_peers.restype = ctypes.POINTER(datum_t)
754
global_set_log_level = _library.gnutls_global_set_log_level
755
global_set_log_level.argtypes = [ctypes.c_int]
756
global_set_log_level.restype = None
758
global_set_log_function = _library.gnutls_global_set_log_function
759
global_set_log_function.argtypes = [log_func]
760
global_set_log_function.restype = None
762
deinit = _library.gnutls_deinit
763
deinit.argtypes = [ClientSession]
764
deinit.restype = None
766
handshake = _library.gnutls_handshake
767
handshake.argtypes = [ClientSession]
768
handshake.restype = ctypes.c_int
769
handshake.errcheck = _retry_on_error
771
transport_set_ptr = _library.gnutls_transport_set_ptr
772
transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]
773
transport_set_ptr.restype = None
775
bye = _library.gnutls_bye
776
bye.argtypes = [ClientSession, close_request_t]
777
bye.restype = ctypes.c_int
778
bye.errcheck = _retry_on_error
780
check_version = _library.gnutls_check_version
781
check_version.argtypes = [ctypes.c_char_p]
782
check_version.restype = ctypes.c_char_p
784
_need_version = b"3.3.0"
785
if check_version(_need_version) is None:
786
raise self.Error("Needs GnuTLS {} or later"
787
.format(_need_version))
789
_tls_rawpk_version = b"3.6.6"
790
has_rawpk = bool(check_version(_tls_rawpk_version))
794
class pubkey_st(ctypes.Structure):
796
pubkey_t = ctypes.POINTER(pubkey_st)
798
x509_crt_fmt_t = ctypes.c_int
800
# All the function declarations below are from
802
pubkey_init = _library.gnutls_pubkey_init
803
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
804
pubkey_init.restype = _error_code
806
pubkey_import = _library.gnutls_pubkey_import
807
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
809
pubkey_import.restype = _error_code
811
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
812
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
813
ctypes.POINTER(ctypes.c_ubyte),
814
ctypes.POINTER(ctypes.c_size_t)]
815
pubkey_get_key_id.restype = _error_code
817
pubkey_deinit = _library.gnutls_pubkey_deinit
818
pubkey_deinit.argtypes = [pubkey_t]
819
pubkey_deinit.restype = None
821
# All the function declarations below are from
824
openpgp_crt_init = _library.gnutls_openpgp_crt_init
825
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
826
openpgp_crt_init.restype = _error_code
828
openpgp_crt_import = _library.gnutls_openpgp_crt_import
829
openpgp_crt_import.argtypes = [openpgp_crt_t,
830
ctypes.POINTER(datum_t),
832
openpgp_crt_import.restype = _error_code
834
openpgp_crt_verify_self = \
835
_library.gnutls_openpgp_crt_verify_self
836
openpgp_crt_verify_self.argtypes = [
839
ctypes.POINTER(ctypes.c_uint),
841
openpgp_crt_verify_self.restype = _error_code
843
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
844
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
845
openpgp_crt_deinit.restype = None
847
openpgp_crt_get_fingerprint = (
848
_library.gnutls_openpgp_crt_get_fingerprint)
849
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
853
openpgp_crt_get_fingerprint.restype = _error_code
855
if check_version(b"3.6.4"):
856
certificate_type_get2 = _library.gnutls_certificate_type_get2
857
certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]
858
certificate_type_get2.restype = _error_code
860
# Remove non-public functions
861
del _error_code, _retry_on_error
864
def call_pipe(connection, # : multiprocessing.Connection
865
func, *args, **kwargs):
866
"""This function is meant to be called by multiprocessing.Process
868
This function runs func(*args, **kwargs), and writes the resulting
869
return value on the provided multiprocessing.Connection.
871
connection.send(func(*args, **kwargs))
382
def timedelta_to_milliseconds(td):
383
"Convert a datetime.timedelta() to milliseconds"
384
return ((td.days * 24 * 60 * 60 * 1000)
385
+ (td.seconds * 1000)
386
+ (td.microseconds // 1000))
388
class Client(object):
876
389
"""A representation of a client host served by this server.
879
approved: bool(); None if not yet approved/disapproved
392
approved: bool(); 'None' if not yet approved/disapproved
880
393
approval_delay: datetime.timedelta(); Time to wait for approval
881
394
approval_duration: datetime.timedelta(); Duration of one approval
882
checker: multiprocessing.Process(); a running checker process used
883
to see if the client lives. None if no process is
885
checker_callback_tag: a GLib event source tag, or None
395
checker: subprocess.Popen(); a running checker process used
396
to see if the client lives.
397
'None' if no process is running.
398
checker_callback_tag: a gobject event source tag, or None
886
399
checker_command: string; External command which is run to check
887
400
if client lives. %() expansions are done at
888
401
runtime with vars(self) as dict, so that for
889
402
instance %(name)s can be used in the command.
890
checker_initiator_tag: a GLib event source tag, or None
403
checker_initiator_tag: a gobject event source tag, or None
891
404
created: datetime.datetime(); (UTC) object creation
892
405
client_structure: Object describing what attributes a client has
893
406
and is used for storing the client at exit
894
407
current_checker_command: string; current running checker_command
895
disable_initiator_tag: a GLib event source tag, or None
408
disable_initiator_tag: a gobject event source tag, or None
897
410
fingerprint: string (40 or 32 hexadecimal digits); used to
898
uniquely identify an OpenPGP client
899
key_id: string (64 hexadecimal digits); used to uniquely identify
900
a client using raw public keys
411
uniquely identify the client
901
412
host: string; available for use by the checker command
902
413
interval: datetime.timedelta(); How often to start a new checker
903
414
last_approval_request: datetime.datetime(); (UTC) or None
904
415
last_checked_ok: datetime.datetime(); (UTC) or None
905
416
last_checker_status: integer between 0 and 255 reflecting exit
906
417
status of last checker. -1 reflects crashed
907
checker, -2 means no checker completed yet.
908
last_checker_signal: The signal which killed the last checker, if
909
last_checker_status is -1
910
419
last_enabled: datetime.datetime(); (UTC) or None
911
420
name: string; from the config file, used in log messages and
912
421
D-Bus identifiers
913
422
secret: bytestring; sent verbatim (over TLS) to client
914
423
timeout: datetime.timedelta(); How long from last_checked_ok
915
424
until this client is disabled
916
extended_timeout: extra long timeout when secret has been sent
425
extended_timeout: extra long timeout when password has been sent
917
426
runtime_expansions: Allowed attributes for runtime expansion.
918
427
expires: datetime.datetime(); time (UTC) when a client will be
919
428
disabled, or None
920
server_settings: The server_settings dict from main()
923
431
runtime_expansions = ("approval_delay", "approval_duration",
924
"created", "enabled", "expires", "key_id",
925
"fingerprint", "host", "interval",
926
"last_approval_request", "last_checked_ok",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
927
434
"last_enabled", "name", "timeout")
930
"extended_timeout": "PT15M",
932
"checker": "fping -q -- %%(host)s",
934
"approval_delay": "PT0S",
935
"approval_duration": "PT1S",
936
"approved_by_default": "True",
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
438
"checker": "fping -q -- %%(host)s",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
442
"approved_by_default": "True",
446
def timeout_milliseconds(self):
447
"Return the 'timeout' attribute in milliseconds"
448
return timedelta_to_milliseconds(self.timeout)
450
def extended_timeout_milliseconds(self):
451
"Return the 'extended_timeout' attribute in milliseconds"
452
return timedelta_to_milliseconds(self.extended_timeout)
454
def interval_milliseconds(self):
455
"Return the 'interval' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.interval)
458
def approval_delay_milliseconds(self):
459
return timedelta_to_milliseconds(self.approval_delay)
941
462
def config_parser(config):
1024
541
self.current_checker_command = None
1025
542
self.approved = None
1026
543
self.approvals_pending = 0
1027
self.changedstate = multiprocessing_manager.Condition(
1028
multiprocessing_manager.Lock())
1029
self.client_structure = [attr
1030
for attr in self.__dict__.keys()
544
self.changedstate = (multiprocessing_manager
545
.Condition(multiprocessing_manager
547
self.client_structure = [attr for attr in
548
self.__dict__.iterkeys()
1031
549
if not attr.startswith("_")]
1032
550
self.client_structure.append("client_structure")
1034
for name, t in inspect.getmembers(
1035
type(self), lambda obj: isinstance(obj, property)):
552
for name, t in inspect.getmembers(type(self),
1036
556
if not name.startswith("_"):
1037
557
self.client_structure.append(name)
1039
559
# Send notice to process children that client state has changed
1040
560
def send_changedstate(self):
1041
561
with self.changedstate:
1042
562
self.changedstate.notify_all()
1044
564
def enable(self):
1045
565
"""Start this client's checker and timeout hooks"""
1046
566
if getattr(self, "enabled", False):
1047
567
# Already enabled
569
self.send_changedstate()
1049
570
self.expires = datetime.datetime.utcnow() + self.timeout
1050
571
self.enabled = True
1051
572
self.last_enabled = datetime.datetime.utcnow()
1052
573
self.init_checker()
1053
self.send_changedstate()
1055
575
def disable(self, quiet=True):
1056
576
"""Disable this client."""
1057
577
if not getattr(self, "enabled", False):
580
self.send_changedstate()
1060
582
logger.info("Disabling client %s", self.name)
1061
if getattr(self, "disable_initiator_tag", None) is not None:
1062
GLib.source_remove(self.disable_initiator_tag)
583
if getattr(self, "disable_initiator_tag", False):
584
gobject.source_remove(self.disable_initiator_tag)
1063
585
self.disable_initiator_tag = None
1064
586
self.expires = None
1065
if getattr(self, "checker_initiator_tag", None) is not None:
1066
GLib.source_remove(self.checker_initiator_tag)
587
if getattr(self, "checker_initiator_tag", False):
588
gobject.source_remove(self.checker_initiator_tag)
1067
589
self.checker_initiator_tag = None
1068
590
self.stop_checker()
1069
591
self.enabled = False
1071
self.send_changedstate()
1072
# Do not run this again if called by a GLib.timeout_add
592
# Do not run this again if called by a gobject.timeout_add
1075
595
def __del__(self):
1078
598
def init_checker(self):
1079
599
# Schedule a new checker to be started an 'interval' from now,
1080
600
# and every interval from then on.
1081
if self.checker_initiator_tag is not None:
1082
GLib.source_remove(self.checker_initiator_tag)
1083
self.checker_initiator_tag = GLib.timeout_add(
1084
random.randrange(int(self.interval.total_seconds() * 1000
601
self.checker_initiator_tag = (gobject.timeout_add
602
(self.interval_milliseconds(),
1087
604
# Schedule a disable() when 'timeout' has passed
1088
if self.disable_initiator_tag is not None:
1089
GLib.source_remove(self.disable_initiator_tag)
1090
self.disable_initiator_tag = GLib.timeout_add(
1091
int(self.timeout.total_seconds() * 1000), self.disable)
605
self.disable_initiator_tag = (gobject.timeout_add
606
(self.timeout_milliseconds(),
1092
608
# Also start a new checker *right now*.
1093
609
self.start_checker()
1095
def checker_callback(self, source, condition, connection,
611
def checker_callback(self, pid, condition, command):
1097
612
"""The checker has completed, so take appropriate actions."""
1098
# Read return code from connection (see call_pipe)
1099
returncode = connection.recv()
1101
if self.checker is not None:
1103
613
self.checker_callback_tag = None
1104
614
self.checker = None
1107
self.last_checker_status = returncode
1108
self.last_checker_signal = None
615
if os.WIFEXITED(condition):
616
self.last_checker_status = os.WEXITSTATUS(condition)
1109
617
if self.last_checker_status == 0:
1110
618
logger.info("Checker for %(name)s succeeded",
1112
620
self.checked_ok()
1114
logger.info("Checker for %(name)s failed", vars(self))
622
logger.info("Checker for %(name)s failed",
1116
625
self.last_checker_status = -1
1117
self.last_checker_signal = -returncode
1118
626
logger.warning("Checker for %(name)s crashed?",
1122
def checked_ok(self):
1123
"""Assert that the client has been seen, alive and well."""
1124
self.last_checked_ok = datetime.datetime.utcnow()
1125
self.last_checker_status = 0
1126
self.last_checker_signal = None
1129
def bump_timeout(self, timeout=None):
1130
"""Bump up the timeout for this client."""
629
def checked_ok(self, timeout=None):
630
"""Bump up the timeout for this client.
632
This should only be called when the client has been seen,
1131
635
if timeout is None:
1132
636
timeout = self.timeout
637
self.last_checked_ok = datetime.datetime.utcnow()
1133
638
if self.disable_initiator_tag is not None:
1134
GLib.source_remove(self.disable_initiator_tag)
1135
self.disable_initiator_tag = None
639
gobject.source_remove(self.disable_initiator_tag)
1136
640
if getattr(self, "enabled", False):
1137
self.disable_initiator_tag = GLib.timeout_add(
1138
int(timeout.total_seconds() * 1000), self.disable)
641
self.disable_initiator_tag = (gobject.timeout_add
642
(timedelta_to_milliseconds
643
(timeout), self.disable))
1139
644
self.expires = datetime.datetime.utcnow() + timeout
1141
646
def need_approval(self):
1142
647
self.last_approval_request = datetime.datetime.utcnow()
1144
649
def start_checker(self):
1145
650
"""Start a new checker subprocess if one is not running.
1147
652
If a checker already exists, leave it running and do
1149
654
# The reason for not killing a running checker is that if we
1150
# did that, and if a checker (for some reason) started running
1151
# slowly and taking more than 'interval' time, then the client
1152
# would inevitably timeout, since no checker would get a
1153
# chance to run to completion. If we instead leave running
655
# did that, then if a checker (for some reason) started
656
# running slowly and taking more than 'interval' time, the
657
# client would inevitably timeout, since no checker would get
658
# a chance to run to completion. If we instead leave running
1154
659
# checkers alone, the checker would have to take more time
1155
660
# than 'timeout' for the client to be disabled, which is as it
1158
if self.checker is not None and not self.checker.is_alive():
1159
logger.warning("Checker was not alive; joining")
663
# If a checker exists, make sure it is not a zombie
665
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
666
except (AttributeError, OSError) as error:
667
if (isinstance(error, OSError)
668
and error.errno != errno.ECHILD):
672
logger.warning("Checker was a zombie")
673
gobject.source_remove(self.checker_callback_tag)
674
self.checker_callback(pid, status,
675
self.current_checker_command)
1162
676
# Start a new checker if needed
1163
677
if self.checker is None:
1164
# Escape attributes for the shell
1166
attr: shlex.quote(str(getattr(self, attr)))
1167
for attr in self.runtime_expansions}
1169
command = self.checker_command % escaped_attrs
1170
except TypeError as error:
1171
logger.error('Could not format string "%s"',
1172
self.checker_command,
1174
return True # Try again later
679
# In case checker_command has exactly one % operator
680
command = self.checker_command % self.host
682
# Escape attributes for the shell
683
escaped_attrs = dict(
685
re.escape(unicode(str(getattr(self, attr, "")),
689
self.runtime_expansions)
692
command = self.checker_command % escaped_attrs
693
except TypeError as error:
694
logger.error('Could not format string "%s":'
695
' %s', self.checker_command, error)
696
return True # Try again later
1175
697
self.current_checker_command = command
1176
logger.info("Starting checker %r for %s", command,
1178
# We don't need to redirect stdout and stderr, since
1179
# in normal mode, that is already done by daemon(),
1180
# and in debug mode we don't want to. (Stdin is
1181
# always replaced by /dev/null.)
1182
# The exception is when not debugging but nevertheless
1183
# running in the foreground; use the previously
1185
popen_args = {"close_fds": True,
1188
if (not self.server_settings["debug"]
1189
and self.server_settings["foreground"]):
1190
popen_args.update({"stdout": wnull,
1192
pipe = multiprocessing.Pipe(duplex=False)
1193
self.checker = multiprocessing.Process(
1195
args=(pipe[1], subprocess.call, command),
1197
self.checker.start()
1198
self.checker_callback_tag = GLib.io_add_watch(
1199
GLib.IOChannel.unix_new(pipe[0].fileno()),
1200
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1201
self.checker_callback, pipe[0], command)
1202
# Re-run this periodically if run by GLib.timeout_add
699
logger.info("Starting checker %r for %s",
701
# We don't need to redirect stdout and stderr, since
702
# in normal mode, that is already done by daemon(),
703
# and in debug mode we don't want to. (Stdin is
704
# always replaced by /dev/null.)
705
self.checker = subprocess.Popen(command,
708
self.checker_callback_tag = (gobject.child_watch_add
710
self.checker_callback,
712
# The checker may have completed before the gobject
713
# watch was added. Check for this.
714
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
716
gobject.source_remove(self.checker_callback_tag)
717
self.checker_callback(pid, status, command)
718
except OSError as error:
719
logger.error("Failed to start subprocess: %s",
721
# Re-run this periodically if run by gobject.timeout_add
1205
724
def stop_checker(self):
1206
725
"""Force the checker process, if any, to stop."""
1207
726
if self.checker_callback_tag:
1208
GLib.source_remove(self.checker_callback_tag)
727
gobject.source_remove(self.checker_callback_tag)
1209
728
self.checker_callback_tag = None
1210
729
if getattr(self, "checker", None) is None:
1212
731
logger.debug("Stopping checker for %(name)s", vars(self))
1213
self.checker.terminate()
733
os.kill(self.checker.pid, signal.SIGTERM)
735
#if self.checker.poll() is None:
736
# os.kill(self.checker.pid, signal.SIGKILL)
737
except OSError as error:
738
if error.errno != errno.ESRCH: # No such process
1214
740
self.checker = None
1217
def dbus_service_property(dbus_interface,
743
def dbus_service_property(dbus_interface, signature="v",
744
access="readwrite", byte_arrays=False):
1221
745
"""Decorators for marking methods of a DBusObjectWithProperties to
1222
746
become properties on the D-Bus.
1224
748
The decorated method will be called with no arguments by "Get"
1225
749
and with one argument by "Set".
1227
751
The parameters, where they are supported, are the same as
1228
752
dbus.service.method, except there is only "signature", since the
1229
753
type from Get() and the type sent to Set() is the same.
1312
class DBusObjectWithAnnotations(dbus.service.Object):
1313
"""A D-Bus object with annotations.
1315
Classes inheriting from this can use the dbus_annotations
1316
decorator to add annotations to methods or signals.
1320
def _is_dbus_thing(thing):
1321
"""Returns a function testing if an attribute is a D-Bus thing
1323
If called like _is_dbus_thing("method") it returns a function
1324
suitable for use as predicate to inspect.getmembers().
1326
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1329
def _get_all_dbus_things(self, thing):
1330
"""Returns a generator of (name, attribute) pairs
1332
return ((getattr(athing.__get__(self), "_dbus_name", name),
1333
athing.__get__(self))
1334
for cls in self.__class__.__mro__
1336
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1338
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1340
path_keyword="object_path",
1341
connection_keyword="connection")
1342
def Introspect(self, object_path, connection):
1343
"""Overloading of standard D-Bus method.
1345
Inserts annotation tags on methods and signals.
1347
xmlstring = dbus.service.Object.Introspect(self, object_path,
1350
document = xml.dom.minidom.parseString(xmlstring)
1352
for if_tag in document.getElementsByTagName("interface"):
1353
# Add annotation tags
1354
for typ in ("method", "signal"):
1355
for tag in if_tag.getElementsByTagName(typ):
1357
for name, prop in (self.
1358
_get_all_dbus_things(typ)):
1359
if (name == tag.getAttribute("name")
1360
and prop._dbus_interface
1361
== if_tag.getAttribute("name")):
1362
annots.update(getattr(
1363
prop, "_dbus_annotations", {}))
1364
for name, value in annots.items():
1365
ann_tag = document.createElement(
1367
ann_tag.setAttribute("name", name)
1368
ann_tag.setAttribute("value", value)
1369
tag.appendChild(ann_tag)
1370
# Add interface annotation tags
1371
for annotation, value in dict(
1372
itertools.chain.from_iterable(
1373
annotations().items()
1374
for name, annotations
1375
in self._get_all_dbus_things("interface")
1376
if name == if_tag.getAttribute("name")
1378
ann_tag = document.createElement("annotation")
1379
ann_tag.setAttribute("name", annotation)
1380
ann_tag.setAttribute("value", value)
1381
if_tag.appendChild(ann_tag)
1382
# Fix argument name for the Introspect method itself
1383
if (if_tag.getAttribute("name")
1384
== dbus.INTROSPECTABLE_IFACE):
1385
for cn in if_tag.getElementsByTagName("method"):
1386
if cn.getAttribute("name") == "Introspect":
1387
for arg in cn.getElementsByTagName("arg"):
1388
if (arg.getAttribute("direction")
1390
arg.setAttribute("name",
1392
xmlstring = document.toxml("utf-8")
1394
except (AttributeError, xml.dom.DOMException,
1395
xml.parsers.expat.ExpatError) as error:
1396
logger.error("Failed to override Introspection method",
1401
class DBusObjectWithProperties(DBusObjectWithAnnotations):
792
class DBusObjectWithProperties(dbus.service.Object):
1402
793
"""A D-Bus object with properties.
1404
795
Classes inheriting from this can use the dbus_service_property
1405
796
decorator to expose methods as D-Bus properties. It exposes the
1406
797
standard Get(), Set(), and GetAll() methods on the D-Bus.
801
def _is_dbus_property(obj):
802
return getattr(obj, "_dbus_is_property", False)
804
def _get_all_dbus_properties(self):
805
"""Returns a generator of (name, attribute) pairs
807
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
808
for cls in self.__class__.__mro__
810
inspect.getmembers(cls, self._is_dbus_property))
1409
812
def _get_dbus_property(self, interface_name, property_name):
1410
813
"""Returns a bound method if one exists which is a D-Bus
1411
814
property with the specified name and interface.
1413
for cls in self.__class__.__mro__:
1414
for name, value in inspect.getmembers(
1415
cls, self._is_dbus_thing("property")):
816
for cls in self.__class__.__mro__:
817
for name, value in (inspect.getmembers
818
(cls, self._is_dbus_property)):
1416
819
if (value._dbus_name == property_name
1417
820
and value._dbus_interface == interface_name):
1418
821
return value.__get__(self)
1420
823
# No such property
1421
raise DBusPropertyNotFound("{}:{}.{}".format(
1422
self.dbus_object_path, interface_name, property_name))
1425
def _get_all_interface_names(cls):
1426
"""Get a sequence of all interfaces supported by an object"""
1427
return (name for name in set(getattr(getattr(x, attr),
1428
"_dbus_interface", None)
1429
for x in (inspect.getmro(cls))
1431
if name is not None)
1433
@dbus.service.method(dbus.PROPERTIES_IFACE,
824
raise DBusPropertyNotFound(self.dbus_object_path + ":"
825
+ interface_name + "."
828
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1435
829
out_signature="v")
1436
830
def Get(self, interface_name, property_name):
1437
831
"""Standard D-Bus property Get() method, see D-Bus standard.
1561
923
except (AttributeError, xml.dom.DOMException,
1562
924
xml.parsers.expat.ExpatError) as error:
1563
925
logger.error("Failed to override Introspection method",
1569
dbus.OBJECT_MANAGER_IFACE
1570
except AttributeError:
1571
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1574
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1575
"""A D-Bus object with an ObjectManager.
1577
Classes inheriting from this exposes the standard
1578
GetManagedObjects call and the InterfacesAdded and
1579
InterfacesRemoved signals on the standard
1580
"org.freedesktop.DBus.ObjectManager" interface.
1582
Note: No signals are sent automatically; they must be sent
1585
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1586
out_signature="a{oa{sa{sv}}}")
1587
def GetManagedObjects(self):
1588
"""This function must be overridden"""
1589
raise NotImplementedError()
1591
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1592
signature="oa{sa{sv}}")
1593
def InterfacesAdded(self, object_path, interfaces_and_properties):
1596
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1597
def InterfacesRemoved(self, object_path, interfaces):
1600
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1602
path_keyword="object_path",
1603
connection_keyword="connection")
1604
def Introspect(self, object_path, connection):
1605
"""Overloading of standard D-Bus method.
1607
Override return argument name of GetManagedObjects to be
1608
"objpath_interfaces_and_properties"
1610
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1614
document = xml.dom.minidom.parseString(xmlstring)
1616
for if_tag in document.getElementsByTagName("interface"):
1617
# Fix argument name for the GetManagedObjects method
1618
if (if_tag.getAttribute("name")
1619
== dbus.OBJECT_MANAGER_IFACE):
1620
for cn in if_tag.getElementsByTagName("method"):
1621
if (cn.getAttribute("name")
1622
== "GetManagedObjects"):
1623
for arg in cn.getElementsByTagName("arg"):
1624
if (arg.getAttribute("direction")
1628
"objpath_interfaces"
1630
xmlstring = document.toxml("utf-8")
1632
except (AttributeError, xml.dom.DOMException,
1633
xml.parsers.expat.ExpatError) as error:
1634
logger.error("Failed to override Introspection method",
1639
def datetime_to_dbus(dt, variant_level=0):
930
def datetime_to_dbus (dt, variant_level=0):
1640
931
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1642
return dbus.String("", variant_level=variant_level)
1643
return dbus.String(dt.isoformat(), variant_level=variant_level)
1646
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1647
"""A class decorator; applied to a subclass of
1648
dbus.service.Object, it will add alternate D-Bus attributes with
1649
interface names according to the "alt_interface_names" mapping.
1652
@alternate_dbus_interfaces({"org.example.Interface":
1653
"net.example.AlternateInterface"})
1654
class SampleDBusObject(dbus.service.Object):
1655
@dbus.service.method("org.example.Interface")
1656
def SampleDBusMethod():
1659
The above "SampleDBusMethod" on "SampleDBusObject" will be
1660
reachable via two interfaces: "org.example.Interface" and
1661
"net.example.AlternateInterface", the latter of which will have
1662
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1663
"true", unless "deprecate" is passed with a False value.
1665
This works for methods and signals, and also for D-Bus properties
1666
(from DBusObjectWithProperties) and interfaces (from the
1667
dbus_interface_annotations decorator).
933
return dbus.String("", variant_level = variant_level)
934
return dbus.String(dt.isoformat(),
935
variant_level=variant_level)
938
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
940
"""Applied to an empty subclass of a D-Bus object, this metaclass
941
will add additional D-Bus attributes matching a certain pattern.
1671
for orig_interface_name, alt_interface_name in (
1672
alt_interface_names.items()):
1674
interface_names = set()
1675
# Go though all attributes of the class
1676
for attrname, attribute in inspect.getmembers(cls):
943
def __new__(mcs, name, bases, attr):
944
# Go through all the base classes which could have D-Bus
945
# methods, signals, or properties in them
946
for base in (b for b in bases
947
if issubclass(b, dbus.service.Object)):
948
# Go though all attributes of the base class
949
for attrname, attribute in inspect.getmembers(base):
1677
950
# Ignore non-D-Bus attributes, and D-Bus attributes
1678
951
# with the wrong interface name
1679
952
if (not hasattr(attribute, "_dbus_interface")
1680
or not attribute._dbus_interface.startswith(
1681
orig_interface_name)):
953
or not attribute._dbus_interface
954
.startswith("se.recompile.Mandos")):
1683
956
# Create an alternate D-Bus interface name based on
1684
957
# the current name
1685
alt_interface = attribute._dbus_interface.replace(
1686
orig_interface_name, alt_interface_name)
1687
interface_names.add(alt_interface)
958
alt_interface = (attribute._dbus_interface
959
.replace("se.recompile.Mandos",
960
"se.bsnet.fukt.Mandos"))
1688
961
# Is this a D-Bus signal?
1689
962
if getattr(attribute, "_dbus_is_signal", False):
1690
# Extract the original non-method undecorated
1691
# function by black magic
1692
if sys.version_info.major == 2:
1693
nonmethod_func = (dict(
963
# Extract the original non-method function by
965
nonmethod_func = (dict(
1694
966
zip(attribute.func_code.co_freevars,
1695
attribute.__closure__))
1696
["func"].cell_contents)
1698
nonmethod_func = (dict(
1699
zip(attribute.__code__.co_freevars,
1700
attribute.__closure__))
1701
["func"].cell_contents)
967
attribute.__closure__))["func"]
1702
969
# Create a new, but exactly alike, function
1703
970
# object, and decorate it to be a new D-Bus signal
1704
971
# with the alternate D-Bus interface name
1705
new_function = copy_function(nonmethod_func)
1706
new_function = (dbus.service.signal(
1708
attribute._dbus_signature)(new_function))
1709
# Copy annotations, if any
1711
new_function._dbus_annotations = dict(
1712
attribute._dbus_annotations)
1713
except AttributeError:
972
new_function = (dbus.service.signal
974
attribute._dbus_signature)
976
nonmethod_func.func_code,
977
nonmethod_func.func_globals,
978
nonmethod_func.func_name,
979
nonmethod_func.func_defaults,
980
nonmethod_func.func_closure)))
1716
981
# Define a creator of a function to call both the
1717
# original and alternate functions, so both the
1718
# original and alternate signals gets sent when
1719
# the function is called
982
# old and new functions, so both the old and new
983
# signals gets sent when the function is called
1720
984
def fixscope(func1, func2):
1721
985
"""This function is a scope container to pass
1722
986
func1 and func2 to the "call_both" function
1723
987
outside of its arguments"""
1725
@functools.wraps(func2)
1726
988
def call_both(*args, **kwargs):
1727
989
"""This function will emit two D-Bus
1728
990
signals by calling func1 and func2"""
1729
991
func1(*args, **kwargs)
1730
992
func2(*args, **kwargs)
1731
# Make wrapper function look like a D-Bus
1733
for name, attr in inspect.getmembers(func2):
1734
if name.startswith("_dbus_"):
1735
setattr(call_both, name, attr)
1737
993
return call_both
1738
994
# Create the "call_both" function and add it to
1740
attr[attrname] = fixscope(attribute, new_function)
996
attr[attrname] = fixscope(attribute,
1741
998
# Is this a D-Bus method?
1742
999
elif getattr(attribute, "_dbus_is_method", False):
1743
1000
# Create a new, but exactly alike, function
1744
1001
# object. Decorate it to be a new D-Bus method
1745
1002
# with the alternate D-Bus interface name. Add it
1746
1003
# to the class.
1748
dbus.service.method(
1750
attribute._dbus_in_signature,
1751
attribute._dbus_out_signature)
1752
(copy_function(attribute)))
1753
# Copy annotations, if any
1755
attr[attrname]._dbus_annotations = dict(
1756
attribute._dbus_annotations)
1757
except AttributeError:
1004
attr[attrname] = (dbus.service.method
1006
attribute._dbus_in_signature,
1007
attribute._dbus_out_signature)
1009
(attribute.func_code,
1010
attribute.func_globals,
1011
attribute.func_name,
1012
attribute.func_defaults,
1013
attribute.func_closure)))
1759
1014
# Is this a D-Bus property?
1760
1015
elif getattr(attribute, "_dbus_is_property", False):
1761
1016
# Create a new, but exactly alike, function
1762
1017
# object, and decorate it to be a new D-Bus
1763
1018
# property with the alternate D-Bus interface
1764
1019
# name. Add it to the class.
1765
attr[attrname] = (dbus_service_property(
1766
alt_interface, attribute._dbus_signature,
1767
attribute._dbus_access,
1768
attribute._dbus_get_args_options
1770
(copy_function(attribute)))
1771
# Copy annotations, if any
1773
attr[attrname]._dbus_annotations = dict(
1774
attribute._dbus_annotations)
1775
except AttributeError:
1777
# Is this a D-Bus interface?
1778
elif getattr(attribute, "_dbus_is_interface", False):
1779
# Create a new, but exactly alike, function
1780
# object. Decorate it to be a new D-Bus interface
1781
# with the alternate D-Bus interface name. Add it
1784
dbus_interface_annotations(alt_interface)
1785
(copy_function(attribute)))
1787
# Deprecate all alternate interfaces
1788
iname = "_AlternateDBusNames_interface_annotation{}"
1789
for interface_name in interface_names:
1791
@dbus_interface_annotations(interface_name)
1793
return {"org.freedesktop.DBus.Deprecated":
1795
# Find an unused name
1796
for aname in (iname.format(i)
1797
for i in itertools.count()):
1798
if aname not in attr:
1802
# Replace the class with a new subclass of it with
1803
# methods, signals, etc. as created above.
1804
if sys.version_info.major == 2:
1805
cls = type(b"{}Alternate".format(cls.__name__),
1808
cls = type("{}Alternate".format(cls.__name__),
1815
@alternate_dbus_interfaces({"se.recompile.Mandos":
1816
"se.bsnet.fukt.Mandos"})
1020
attr[attrname] = (dbus_service_property
1022
attribute._dbus_signature,
1023
attribute._dbus_access,
1025
._dbus_get_args_options
1028
(attribute.func_code,
1029
attribute.func_globals,
1030
attribute.func_name,
1031
attribute.func_defaults,
1032
attribute.func_closure)))
1033
return type.__new__(mcs, name, bases, attr)
1817
1036
class ClientDBus(Client, DBusObjectWithProperties):
1818
1037
"""A Client class using D-Bus
1821
1040
dbus_object_path: dbus.ObjectPath
1822
1041
bus: dbus.SystemBus()
1825
1044
runtime_expansions = (Client.runtime_expansions
1826
+ ("dbus_object_path", ))
1828
_interface = "se.recompile.Mandos.Client"
1045
+ ("dbus_object_path",))
1830
1047
# dbus.service.Object doesn't use super(), so we can't either.
1832
def __init__(self, bus=None, *args, **kwargs):
1049
def __init__(self, bus = None, *args, **kwargs):
1834
1051
Client.__init__(self, *args, **kwargs)
1052
self._approvals_pending = 0
1054
self._approvals_pending = 0
1835
1055
# Only now, when this client is initialized, can it show up on
1837
client_object_name = str(self.name).translate(
1057
client_object_name = unicode(self.name).translate(
1838
1058
{ord("."): ord("_"),
1839
1059
ord("-"): ord("_")})
1840
self.dbus_object_path = dbus.ObjectPath(
1841
"/clients/" + client_object_name)
1060
self.dbus_object_path = (dbus.ObjectPath
1061
("/clients/" + client_object_name))
1842
1062
DBusObjectWithProperties.__init__(self, self.bus,
1843
1063
self.dbus_object_path)
1845
def notifychangeproperty(transform_func, dbus_name,
1846
type_func=lambda x: x,
1848
invalidate_only=False,
1849
_interface=_interface):
1065
def notifychangeproperty(transform_func,
1066
dbus_name, type_func=lambda x: x,
1850
1068
""" Modify a variable so that it's a property which announces
1851
1069
its changes to DBus.
1853
1071
transform_fun: Function that takes a value and a variant_level
1854
1072
and transforms it to a D-Bus type.
1855
1073
dbus_name: D-Bus name of the variable
1857
1075
to the D-Bus. Default: no transform
1858
1076
variant_level: D-Bus variant level. Default: 1
1860
attrname = "_{}".format(dbus_name)
1078
attrname = "_{0}".format(dbus_name)
1862
1079
def setter(self, value):
1863
1080
if hasattr(self, "dbus_object_path"):
1864
1081
if (not hasattr(self, attrname) or
1865
1082
type_func(getattr(self, attrname, None))
1866
1083
!= type_func(value)):
1868
self.PropertiesChanged(
1869
_interface, dbus.Dictionary(),
1870
dbus.Array((dbus_name, )))
1872
dbus_value = transform_func(
1874
variant_level=variant_level)
1875
self.PropertyChanged(dbus.String(dbus_name),
1877
self.PropertiesChanged(
1879
dbus.Dictionary({dbus.String(dbus_name):
1084
dbus_value = transform_func(type_func(value),
1087
self.PropertyChanged(dbus.String(dbus_name),
1882
1089
setattr(self, attrname, value)
1884
1091
return property(lambda self: getattr(self, attrname), setter)
1886
1094
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1887
1095
approvals_pending = notifychangeproperty(dbus.Boolean,
1888
1096
"ApprovalPending",
1890
1098
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1891
1099
last_enabled = notifychangeproperty(datetime_to_dbus,
1893
checker = notifychangeproperty(
1894
dbus.Boolean, "CheckerRunning",
1895
type_func=lambda checker: checker is not None)
1101
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1102
type_func = lambda checker:
1103
checker is not None)
1896
1104
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1897
1105
"LastCheckedOK")
1898
last_checker_status = notifychangeproperty(dbus.Int16,
1899
"LastCheckerStatus")
1900
1106
last_approval_request = notifychangeproperty(
1901
1107
datetime_to_dbus, "LastApprovalRequest")
1902
1108
approved_by_default = notifychangeproperty(dbus.Boolean,
1903
1109
"ApprovedByDefault")
1904
approval_delay = notifychangeproperty(
1905
dbus.UInt64, "ApprovalDelay",
1906
type_func=lambda td: td.total_seconds() * 1000)
1110
approval_delay = notifychangeproperty(dbus.UInt64,
1113
timedelta_to_milliseconds)
1907
1114
approval_duration = notifychangeproperty(
1908
1115
dbus.UInt64, "ApprovalDuration",
1909
type_func=lambda td: td.total_seconds() * 1000)
1116
type_func = timedelta_to_milliseconds)
1910
1117
host = notifychangeproperty(dbus.String, "Host")
1911
timeout = notifychangeproperty(
1912
dbus.UInt64, "Timeout",
1913
type_func=lambda td: td.total_seconds() * 1000)
1118
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1120
timedelta_to_milliseconds)
1914
1121
extended_timeout = notifychangeproperty(
1915
1122
dbus.UInt64, "ExtendedTimeout",
1916
type_func=lambda td: td.total_seconds() * 1000)
1917
interval = notifychangeproperty(
1918
dbus.UInt64, "Interval",
1919
type_func=lambda td: td.total_seconds() * 1000)
1123
type_func = timedelta_to_milliseconds)
1124
interval = notifychangeproperty(dbus.UInt64,
1127
timedelta_to_milliseconds)
1920
1128
checker_command = notifychangeproperty(dbus.String, "Checker")
1921
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1922
invalidate_only=True)
1924
1130
del notifychangeproperty
1926
1132
def __del__(self, *args, **kwargs):
1928
1134
self.remove_from_connection()
2007
1214
server to mandos-client
2011
1218
# Rejected - signal
2012
1219
@dbus.service.signal(_interface, signature="s")
2013
1220
def Rejected(self, reason):
2017
1224
# NeedApproval - signal
2018
1225
@dbus.service.signal(_interface, signature="tb")
2019
1226
def NeedApproval(self, timeout, default):
2021
1228
return self.need_approval()
1230
# NeRwequest - signal
1231
@dbus.service.signal(_interface, signature="s")
1232
def NewRequest(self, ip):
1234
Is sent after a client request a password.
2025
1240
# Approve - method
2026
1241
@dbus.service.method(_interface, in_signature="b")
2027
1242
def Approve(self, value):
2028
1243
self.approve(value)
2030
1245
# CheckedOK - method
2031
1246
@dbus.service.method(_interface)
2032
1247
def CheckedOK(self):
2033
1248
self.checked_ok()
2035
1250
# Enable - method
2036
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2037
1251
@dbus.service.method(_interface)
2038
1252
def Enable(self):
2042
1256
# StartChecker - method
2043
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2044
1257
@dbus.service.method(_interface)
2045
1258
def StartChecker(self):
2047
1260
self.start_checker()
2049
1262
# Disable - method
2050
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2051
1263
@dbus.service.method(_interface)
2052
1264
def Disable(self):
2056
1268
# StopChecker - method
2057
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2058
1269
@dbus.service.method(_interface)
2059
1270
def StopChecker(self):
2060
1271
self.stop_checker()
2064
1275
# ApprovalPending - property
2065
1276
@dbus_service_property(_interface, signature="b", access="read")
2066
1277
def ApprovalPending_dbus_property(self):
2067
1278
return dbus.Boolean(bool(self.approvals_pending))
2069
1280
# ApprovedByDefault - property
2070
@dbus_service_property(_interface,
1281
@dbus_service_property(_interface, signature="b",
2072
1282
access="readwrite")
2073
1283
def ApprovedByDefault_dbus_property(self, value=None):
2074
1284
if value is None: # get
2075
1285
return dbus.Boolean(self.approved_by_default)
2076
1286
self.approved_by_default = bool(value)
2078
1288
# ApprovalDelay - property
2079
@dbus_service_property(_interface,
1289
@dbus_service_property(_interface, signature="t",
2081
1290
access="readwrite")
2082
1291
def ApprovalDelay_dbus_property(self, value=None):
2083
1292
if value is None: # get
2084
return dbus.UInt64(self.approval_delay.total_seconds()
1293
return dbus.UInt64(self.approval_delay_milliseconds())
2086
1294
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2088
1296
# ApprovalDuration - property
2089
@dbus_service_property(_interface,
1297
@dbus_service_property(_interface, signature="t",
2091
1298
access="readwrite")
2092
1299
def ApprovalDuration_dbus_property(self, value=None):
2093
1300
if value is None: # get
2094
return dbus.UInt64(self.approval_duration.total_seconds()
1301
return dbus.UInt64(timedelta_to_milliseconds(
1302
self.approval_duration))
2096
1303
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2098
1305
# Name - property
2100
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2101
1306
@dbus_service_property(_interface, signature="s", access="read")
2102
1307
def Name_dbus_property(self):
2103
1308
return dbus.String(self.name)
2107
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2108
@dbus_service_property(_interface, signature="s", access="read")
2109
def KeyID_dbus_property(self):
2110
return dbus.String(self.key_id)
2112
1310
# Fingerprint - property
2114
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2115
1311
@dbus_service_property(_interface, signature="s", access="read")
2116
1312
def Fingerprint_dbus_property(self):
2117
1313
return dbus.String(self.fingerprint)
2119
1315
# Host - property
2120
@dbus_service_property(_interface,
1316
@dbus_service_property(_interface, signature="s",
2122
1317
access="readwrite")
2123
1318
def Host_dbus_property(self, value=None):
2124
1319
if value is None: # get
2125
1320
return dbus.String(self.host)
2126
self.host = str(value)
1321
self.host = unicode(value)
2128
1323
# Created - property
2130
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2131
1324
@dbus_service_property(_interface, signature="s", access="read")
2132
1325
def Created_dbus_property(self):
2133
1326
return datetime_to_dbus(self.created)
2135
1328
# LastEnabled - property
2136
1329
@dbus_service_property(_interface, signature="s", access="read")
2137
1330
def LastEnabled_dbus_property(self):
2138
1331
return datetime_to_dbus(self.last_enabled)
2140
1333
# Enabled - property
2141
@dbus_service_property(_interface,
1334
@dbus_service_property(_interface, signature="b",
2143
1335
access="readwrite")
2144
1336
def Enabled_dbus_property(self, value=None):
2145
1337
if value is None: # get
2152
1344
# LastCheckedOK - property
2153
@dbus_service_property(_interface,
1345
@dbus_service_property(_interface, signature="s",
2155
1346
access="readwrite")
2156
1347
def LastCheckedOK_dbus_property(self, value=None):
2157
1348
if value is not None:
2158
1349
self.checked_ok()
2160
1351
return datetime_to_dbus(self.last_checked_ok)
2162
# LastCheckerStatus - property
2163
@dbus_service_property(_interface, signature="n", access="read")
2164
def LastCheckerStatus_dbus_property(self):
2165
return dbus.Int16(self.last_checker_status)
2167
1353
# Expires - property
2168
1354
@dbus_service_property(_interface, signature="s", access="read")
2169
1355
def Expires_dbus_property(self):
2170
1356
return datetime_to_dbus(self.expires)
2172
1358
# LastApprovalRequest - property
2173
1359
@dbus_service_property(_interface, signature="s", access="read")
2174
1360
def LastApprovalRequest_dbus_property(self):
2175
1361
return datetime_to_dbus(self.last_approval_request)
2177
1363
# Timeout - property
2178
@dbus_service_property(_interface,
1364
@dbus_service_property(_interface, signature="t",
2180
1365
access="readwrite")
2181
1366
def Timeout_dbus_property(self, value=None):
2182
1367
if value is None: # get
2183
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2184
old_timeout = self.timeout
1368
return dbus.UInt64(self.timeout_milliseconds())
2185
1369
self.timeout = datetime.timedelta(0, 0, 0, value)
2186
# Reschedule disabling
1370
# Reschedule timeout
2187
1371
if self.enabled:
2188
1372
now = datetime.datetime.utcnow()
2189
self.expires += self.timeout - old_timeout
2190
if self.expires <= now:
1373
time_to_die = timedelta_to_milliseconds(
1374
(self.last_checked_ok + self.timeout) - now)
1375
if time_to_die <= 0:
2191
1376
# The timeout has passed
1379
self.expires = (now +
1380
datetime.timedelta(milliseconds =
2194
1382
if (getattr(self, "disable_initiator_tag", None)
2197
GLib.source_remove(self.disable_initiator_tag)
2198
self.disable_initiator_tag = GLib.timeout_add(
2199
int((self.expires - now).total_seconds() * 1000),
1385
gobject.source_remove(self.disable_initiator_tag)
1386
self.disable_initiator_tag = (gobject.timeout_add
2202
1390
# ExtendedTimeout - property
2203
@dbus_service_property(_interface,
1391
@dbus_service_property(_interface, signature="t",
2205
1392
access="readwrite")
2206
1393
def ExtendedTimeout_dbus_property(self, value=None):
2207
1394
if value is None: # get
2208
return dbus.UInt64(self.extended_timeout.total_seconds()
1395
return dbus.UInt64(self.extended_timeout_milliseconds())
2210
1396
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2212
1398
# Interval - property
2213
@dbus_service_property(_interface,
1399
@dbus_service_property(_interface, signature="t",
2215
1400
access="readwrite")
2216
1401
def Interval_dbus_property(self, value=None):
2217
1402
if value is None: # get
2218
return dbus.UInt64(self.interval.total_seconds() * 1000)
1403
return dbus.UInt64(self.interval_milliseconds())
2219
1404
self.interval = datetime.timedelta(0, 0, 0, value)
2220
1405
if getattr(self, "checker_initiator_tag", None) is None:
2222
1407
if self.enabled:
2223
1408
# Reschedule checker run
2224
GLib.source_remove(self.checker_initiator_tag)
2225
self.checker_initiator_tag = GLib.timeout_add(
2226
value, self.start_checker)
2227
self.start_checker() # Start one now, too
1409
gobject.source_remove(self.checker_initiator_tag)
1410
self.checker_initiator_tag = (gobject.timeout_add
1411
(value, self.start_checker))
1412
self.start_checker() # Start one now, too
2229
1414
# Checker - property
2230
@dbus_service_property(_interface,
1415
@dbus_service_property(_interface, signature="s",
2232
1416
access="readwrite")
2233
1417
def Checker_dbus_property(self, value=None):
2234
1418
if value is None: # get
2235
1419
return dbus.String(self.checker_command)
2236
self.checker_command = str(value)
1420
self.checker_command = unicode(value)
2238
1422
# CheckerRunning - property
2239
@dbus_service_property(_interface,
1423
@dbus_service_property(_interface, signature="b",
2241
1424
access="readwrite")
2242
1425
def CheckerRunning_dbus_property(self, value=None):
2243
1426
if value is None: # get
2246
1429
self.start_checker()
2248
1431
self.stop_checker()
2250
1433
# ObjectPath - property
2252
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2253
"org.freedesktop.DBus.Deprecated": "true"})
2254
1434
@dbus_service_property(_interface, signature="o", access="read")
2255
1435
def ObjectPath_dbus_property(self):
2256
return self.dbus_object_path # is already a dbus.ObjectPath
1436
return self.dbus_object_path # is already a dbus.ObjectPath
2258
1438
# Secret = property
2260
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2262
@dbus_service_property(_interface,
1439
@dbus_service_property(_interface, signature="ay",
1440
access="write", byte_arrays=True)
2266
1441
def Secret_dbus_property(self, value):
2267
self.secret = bytes(value)
1442
self.secret = str(value)
2273
def __init__(self, child_pipe, key_id, fpr, address):
1447
class ProxyClient(object):
1448
def __init__(self, child_pipe, fpr, address):
2274
1449
self._pipe = child_pipe
2275
self._pipe.send(("init", key_id, fpr, address))
1450
self._pipe.send(('init', fpr, address))
2276
1451
if not self._pipe.recv():
2277
raise KeyError(key_id or fpr)
2279
1454
def __getattribute__(self, name):
2281
1456
return super(ProxyClient, self).__getattribute__(name)
2282
self._pipe.send(("getattr", name))
1457
self._pipe.send(('getattr', name))
2283
1458
data = self._pipe.recv()
2284
if data[0] == "data":
1459
if data[0] == 'data':
2286
if data[0] == "function":
1461
if data[0] == 'function':
2288
1462
def func(*args, **kwargs):
2289
self._pipe.send(("funcall", name, args, kwargs))
1463
self._pipe.send(('funcall', name, args, kwargs))
2290
1464
return self._pipe.recv()[1]
2294
1467
def __setattr__(self, name, value):
2296
1469
return super(ProxyClient, self).__setattr__(name, value)
2297
self._pipe.send(("setattr", name, value))
1470
self._pipe.send(('setattr', name, value))
1473
class ClientDBusTransitional(ClientDBus):
1474
__metaclass__ = AlternateDBusNamesMetaclass
2300
1477
class ClientHandler(socketserver.BaseRequestHandler, object):
2301
1478
"""A class to handle client connections.
2303
1480
Instantiated once for each connection to handle it.
2304
1481
Note: This will run in its own forked process."""
2306
1483
def handle(self):
2307
1484
with contextlib.closing(self.server.child_pipe) as child_pipe:
2308
1485
logger.info("TCP connection from: %s",
2309
str(self.client_address))
1486
unicode(self.client_address))
2310
1487
logger.debug("Pipe FD: %d",
2311
1488
self.server.child_pipe.fileno())
2313
session = gnutls.ClientSession(self.request)
2315
# priority = ":".join(("NONE", "+VERS-TLS1.1",
2316
# "+AES-256-CBC", "+SHA1",
2317
# "+COMP-NULL", "+CTYPE-OPENPGP",
1490
session = (gnutls.connection
1491
.ClientSession(self.request,
1493
.X509Credentials()))
1495
# Note: gnutls.connection.X509Credentials is really a
1496
# generic GnuTLS certificate credentials object so long as
1497
# no X.509 keys are added to it. Therefore, we can use it
1498
# here despite using OpenPGP certificates.
1500
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1501
# "+AES-256-CBC", "+SHA1",
1502
# "+COMP-NULL", "+CTYPE-OPENPGP",
2319
1504
# Use a fallback default, since this MUST be set.
2320
1505
priority = self.server.gnutls_priority
2321
1506
if priority is None:
2322
1507
priority = "NORMAL"
2323
gnutls.priority_set_direct(session,
2324
priority.encode("utf-8"), None)
1508
(gnutls.library.functions
1509
.gnutls_priority_set_direct(session._c_object,
2326
1512
# Start communication using the Mandos protocol
2327
1513
# Get protocol number
2328
1514
line = self.request.makefile().readline()
2329
1515
logger.debug("Protocol version: %r", line)
2331
1517
if int(line.strip().split()[0]) > 1:
2332
raise RuntimeError(line)
2333
1519
except (ValueError, IndexError, RuntimeError) as error:
2334
1520
logger.error("Unknown protocol version: %s", error)
2337
1523
# Start GnuTLS connection
2339
1525
session.handshake()
2340
except gnutls.Error as error:
1526
except gnutls.errors.GNUTLSError as error:
2341
1527
logger.warning("Handshake failed: %s", error)
2342
1528
# Do not run session.bye() here: the session is not
2343
1529
# established. Just abandon the request.
2345
1531
logger.debug("Handshake succeeded")
2347
1533
approval_required = False
2349
if gnutls.has_rawpk:
2352
key_id = self.key_id(
2353
self.peer_certificate(session))
2354
except (TypeError, gnutls.Error) as error:
2355
logger.warning("Bad certificate: %s", error)
2357
logger.debug("Key ID: %s",
2358
key_id.decode("utf-8",
2364
fpr = self.fingerprint(
2365
self.peer_certificate(session))
2366
except (TypeError, gnutls.Error) as error:
2367
logger.warning("Bad certificate: %s", error)
2369
logger.debug("Fingerprint: %s", fpr)
2372
client = ProxyClient(child_pipe, key_id, fpr,
1536
fpr = self.fingerprint(self.peer_certificate
1539
gnutls.errors.GNUTLSError) as error:
1540
logger.warning("Bad certificate: %s", error)
1542
logger.debug("Fingerprint: %s", fpr)
1545
client = ProxyClient(child_pipe, fpr,
2373
1546
self.client_address)
2374
1547
except KeyError:
1550
if self.server.use_dbus:
1552
client.NewRequest(str(self.client_address))
2377
1554
if client.approval_delay:
2378
1555
delay = client.approval_delay
2379
1556
client.approvals_pending += 1
2380
1557
approval_required = True
2383
1560
if not client.enabled:
2384
1561
logger.info("Client %s is disabled",
2386
1563
if self.server.use_dbus:
2387
1564
# Emit D-Bus signal
2388
1565
client.Rejected("Disabled")
2391
1568
if client.approved or not client.approval_delay:
2392
# We are approved or approval is disabled
1569
#We are approved or approval is disabled
2394
1571
elif client.approved is None:
2395
1572
logger.info("Client %s needs approval",
2428
1607
delay -= time2 - time
2431
session.send(client.secret)
2432
except gnutls.Error as error:
2433
logger.warning("gnutls send failed",
1610
while sent_size < len(client.secret):
1612
sent = session.send(client.secret[sent_size:])
1613
except gnutls.errors.GNUTLSError as error:
1614
logger.warning("gnutls send failed")
1616
logger.debug("Sent: %d, remaining: %d",
1617
sent, len(client.secret)
1618
- (sent_size + sent))
2437
1621
logger.info("Sending secret to %s", client.name)
2438
1622
# bump the timeout using extended_timeout
2439
client.bump_timeout(client.extended_timeout)
1623
client.checked_ok(client.extended_timeout)
2440
1624
if self.server.use_dbus:
2441
1625
# Emit D-Bus signal
2442
1626
client.GotSecret()
2445
1629
if approval_required:
2446
1630
client.approvals_pending -= 1
2449
except gnutls.Error as error:
2450
logger.warning("GnuTLS bye failed",
1633
except gnutls.errors.GNUTLSError as error:
1634
logger.warning("GnuTLS bye failed")
2454
1637
def peer_certificate(session):
2455
"Return the peer's certificate as a bytestring"
2457
cert_type = gnutls.certificate_type_get2(
2458
session, gnutls.CTYPE_PEERS)
2459
except AttributeError:
2460
cert_type = gnutls.certificate_type_get(session)
2461
if gnutls.has_rawpk:
2462
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2464
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2465
# If not a valid certificate type...
2466
if cert_type not in valid_cert_types:
2467
logger.info("Cert type %r not in %r", cert_type,
2469
# ...return invalid data
1638
"Return the peer's OpenPGP certificate as a bytestring"
1639
# If not an OpenPGP certificate...
1640
if (gnutls.library.functions
1641
.gnutls_certificate_type_get(session._c_object)
1642
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1643
# ...do the normal thing
1644
return session.peer_certificate
2471
1645
list_size = ctypes.c_uint(1)
2472
cert_list = (gnutls.certificate_get_peers
2473
(session, ctypes.byref(list_size)))
1646
cert_list = (gnutls.library.functions
1647
.gnutls_certificate_get_peers
1648
(session._c_object, ctypes.byref(list_size)))
2474
1649
if not bool(cert_list) and list_size.value != 0:
2475
raise gnutls.Error("error getting peer certificate")
1650
raise gnutls.errors.GNUTLSError("error getting peer"
2476
1652
if list_size.value == 0:
2478
1654
cert = cert_list[0]
2479
1655
return ctypes.string_at(cert.data, cert.size)
2482
def key_id(certificate):
2483
"Convert a certificate bytestring to a hexdigit key ID"
2484
# New GnuTLS "datum" with the public key
2485
datum = gnutls.datum_t(
2486
ctypes.cast(ctypes.c_char_p(certificate),
2487
ctypes.POINTER(ctypes.c_ubyte)),
2488
ctypes.c_uint(len(certificate)))
2489
# XXX all these need to be created in the gnutls "module"
2490
# New empty GnuTLS certificate
2491
pubkey = gnutls.pubkey_t()
2492
gnutls.pubkey_init(ctypes.byref(pubkey))
2493
# Import the raw public key into the certificate
2494
gnutls.pubkey_import(pubkey,
2495
ctypes.byref(datum),
2496
gnutls.X509_FMT_DER)
2497
# New buffer for the key ID
2498
buf = ctypes.create_string_buffer(32)
2499
buf_len = ctypes.c_size_t(len(buf))
2500
# Get the key ID from the raw public key into the buffer
2501
gnutls.pubkey_get_key_id(
2503
gnutls.KEYID_USE_SHA256,
2504
ctypes.cast(ctypes.byref(buf),
2505
ctypes.POINTER(ctypes.c_ubyte)),
2506
ctypes.byref(buf_len))
2507
# Deinit the certificate
2508
gnutls.pubkey_deinit(pubkey)
2510
# Convert the buffer to a Python bytestring
2511
key_id = ctypes.string_at(buf, buf_len.value)
2512
# Convert the bytestring to hexadecimal notation
2513
hex_key_id = binascii.hexlify(key_id).upper()
2517
1658
def fingerprint(openpgp):
2518
1659
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2519
1660
# New GnuTLS "datum" with the OpenPGP public key
2520
datum = gnutls.datum_t(
2521
ctypes.cast(ctypes.c_char_p(openpgp),
2522
ctypes.POINTER(ctypes.c_ubyte)),
2523
ctypes.c_uint(len(openpgp)))
1661
datum = (gnutls.library.types
1662
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1665
ctypes.c_uint(len(openpgp))))
2524
1666
# New empty GnuTLS certificate
2525
crt = gnutls.openpgp_crt_t()
2526
gnutls.openpgp_crt_init(ctypes.byref(crt))
1667
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1668
(gnutls.library.functions
1669
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2527
1670
# Import the OpenPGP public key into the certificate
2528
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2529
gnutls.OPENPGP_FMT_RAW)
1671
(gnutls.library.functions
1672
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1673
gnutls.library.constants
1674
.GNUTLS_OPENPGP_FMT_RAW))
2530
1675
# Verify the self signature in the key
2531
1676
crtverify = ctypes.c_uint()
2532
gnutls.openpgp_crt_verify_self(crt, 0,
2533
ctypes.byref(crtverify))
1677
(gnutls.library.functions
1678
.gnutls_openpgp_crt_verify_self(crt, 0,
1679
ctypes.byref(crtverify)))
2534
1680
if crtverify.value != 0:
2535
gnutls.openpgp_crt_deinit(crt)
2536
raise gnutls.CertificateSecurityError(code
1681
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1682
raise (gnutls.errors.CertificateSecurityError
2538
1684
# New buffer for the fingerprint
2539
1685
buf = ctypes.create_string_buffer(20)
2540
1686
buf_len = ctypes.c_size_t()
2541
1687
# Get the fingerprint from the certificate into the buffer
2542
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2543
ctypes.byref(buf_len))
1688
(gnutls.library.functions
1689
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1690
ctypes.byref(buf_len)))
2544
1691
# Deinit the certificate
2545
gnutls.openpgp_crt_deinit(crt)
1692
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2546
1693
# Convert the buffer to a Python bytestring
2547
1694
fpr = ctypes.string_at(buf, buf_len.value)
2548
1695
# Convert the bytestring to hexadecimal notation
2553
class MultiprocessingMixIn:
1700
class MultiprocessingMixIn(object):
2554
1701
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2556
1702
def sub_process_main(self, request, address):
2558
1704
self.finish_request(request, address)
2559
1705
except Exception:
2560
1706
self.handle_error(request, address)
2561
1707
self.close_request(request)
2563
1709
def process_request(self, request, address):
2564
1710
"""Start a new process to process the request."""
2565
proc = multiprocessing.Process(target=self.sub_process_main,
2566
args=(request, address))
1711
proc = multiprocessing.Process(target = self.sub_process_main,
2571
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1718
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2572
1719
""" adds a pipe to the MixIn """
2574
1720
def process_request(self, request, client_address):
2575
1721
"""Overrides and wraps the original process_request().
2577
1723
This function creates a new pipe in self.pipe
2579
1725
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2581
1727
proc = MultiprocessingMixIn.process_request(self, request,
2582
1728
client_address)
2583
1729
self.child_pipe.close()
2584
1730
self.add_pipe(parent_pipe, proc)
2586
1732
def add_pipe(self, parent_pipe, proc):
2587
1733
"""Dummy function; override as necessary"""
2588
raise NotImplementedError()
1734
raise NotImplementedError
2591
1737
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2592
socketserver.TCPServer):
2593
"""IPv6-capable TCP server. Accepts None as address and/or port
1738
socketserver.TCPServer, object):
1739
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2596
1742
enabled: Boolean; whether this server is activated yet
2597
1743
interface: None or a network interface name (string)
2598
1744
use_ipv6: Boolean; to use IPv6 or not
2601
1746
def __init__(self, server_address, RequestHandlerClass,
2605
"""If socketfd is set, use that file descriptor instead of
2606
creating a new one with socket.socket().
1747
interface=None, use_ipv6=True):
2608
1748
self.interface = interface
2610
1750
self.address_family = socket.AF_INET6
2611
if socketfd is not None:
2612
# Save the file descriptor
2613
self.socketfd = socketfd
2614
# Save the original socket.socket() function
2615
self.socket_socket = socket.socket
2617
# To implement --socket, we monkey patch socket.socket.
2619
# (When socketserver.TCPServer is a new-style class, we
2620
# could make self.socket into a property instead of monkey
2621
# patching socket.socket.)
2623
# Create a one-time-only replacement for socket.socket()
2624
@functools.wraps(socket.socket)
2625
def socket_wrapper(*args, **kwargs):
2626
# Restore original function so subsequent calls are
2628
socket.socket = self.socket_socket
2629
del self.socket_socket
2630
# This time only, return a new socket object from the
2631
# saved file descriptor.
2632
return socket.fromfd(self.socketfd, *args, **kwargs)
2633
# Replace socket.socket() function with wrapper
2634
socket.socket = socket_wrapper
2635
# The socketserver.TCPServer.__init__ will call
2636
# socket.socket(), which might be our replacement,
2637
# socket_wrapper(), if socketfd was set.
2638
1751
socketserver.TCPServer.__init__(self, server_address,
2639
1752
RequestHandlerClass)
2641
1753
def server_bind(self):
2642
1754
"""This overrides the normal server_bind() function
2643
1755
to bind to an interface if one was specified, and also NOT to
2644
1756
bind to an address or port if they were not specified."""
2645
global SO_BINDTODEVICE
2646
1757
if self.interface is not None:
2647
1758
if SO_BINDTODEVICE is None:
2648
# Fall back to a hard-coded value which seems to be
2650
logger.warning("SO_BINDTODEVICE not found, trying 25")
2651
SO_BINDTODEVICE = 25
2653
self.socket.setsockopt(
2654
socket.SOL_SOCKET, SO_BINDTODEVICE,
2655
(self.interface + "\0").encode("utf-8"))
2656
except socket.error as error:
2657
if error.errno == errno.EPERM:
2658
logger.error("No permission to bind to"
2659
" interface %s", self.interface)
2660
elif error.errno == errno.ENOPROTOOPT:
2661
logger.error("SO_BINDTODEVICE not available;"
2662
" cannot bind to interface %s",
2664
elif error.errno == errno.ENODEV:
2665
logger.error("Interface %s does not exist,"
2666
" cannot bind", self.interface)
1759
logger.error("SO_BINDTODEVICE does not exist;"
1760
" cannot bind to interface %s",
1764
self.socket.setsockopt(socket.SOL_SOCKET,
1768
except socket.error as error:
1769
if error[0] == errno.EPERM:
1770
logger.error("No permission to"
1771
" bind to interface %s",
1773
elif error[0] == errno.ENOPROTOOPT:
1774
logger.error("SO_BINDTODEVICE not available;"
1775
" cannot bind to interface %s",
2669
1779
# Only bind(2) the socket if we really need to.
2670
1780
if self.server_address[0] or self.server_address[1]:
2671
if self.server_address[1]:
2672
self.allow_reuse_address = True
2673
1781
if not self.server_address[0]:
2674
1782
if self.address_family == socket.AF_INET6:
2675
any_address = "::" # in6addr_any
1783
any_address = "::" # in6addr_any
2677
any_address = "0.0.0.0" # INADDR_ANY
1785
any_address = socket.INADDR_ANY
2678
1786
self.server_address = (any_address,
2679
1787
self.server_address[1])
2680
1788
elif not self.server_address[1]:
2681
self.server_address = (self.server_address[0], 0)
1789
self.server_address = (self.server_address[0],
2682
1791
# if self.interface:
2683
1792
# self.server_address = (self.server_address[0],
2714
1818
self.gnutls_priority = gnutls_priority
2715
1819
IPv6_TCPServer.__init__(self, server_address,
2716
1820
RequestHandlerClass,
2717
interface=interface,
1821
interface = interface,
1822
use_ipv6 = use_ipv6)
2721
1823
def server_activate(self):
2722
1824
if self.enabled:
2723
1825
return socketserver.TCPServer.server_activate(self)
2725
1827
def enable(self):
2726
1828
self.enabled = True
2728
1830
def add_pipe(self, parent_pipe, proc):
2729
1831
# Call "handle_ipc" for both data and EOF events
2731
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2732
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2733
functools.partial(self.handle_ipc,
2734
parent_pipe=parent_pipe,
2737
def handle_ipc(self, source, condition,
2740
client_object=None):
1832
gobject.io_add_watch(parent_pipe.fileno(),
1833
gobject.IO_IN | gobject.IO_HUP,
1834
functools.partial(self.handle_ipc,
1839
def handle_ipc(self, source, condition, parent_pipe=None,
1840
proc = None, client_object=None):
1842
gobject.IO_IN: "IN", # There is data to read.
1843
gobject.IO_OUT: "OUT", # Data can be written (without
1845
gobject.IO_PRI: "PRI", # There is urgent data to read.
1846
gobject.IO_ERR: "ERR", # Error condition.
1847
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1848
# broken, usually for pipes and
1851
conditions_string = ' | '.join(name
1853
condition_names.iteritems()
1854
if cond & condition)
2741
1855
# error, or the other end of multiprocessing.Pipe has closed
2742
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1856
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2743
1857
# Wait for other process to exit
2747
1861
# Read a request from the child
2748
1862
request = parent_pipe.recv()
2749
1863
command = request[0]
2751
if command == "init":
2752
key_id = request[1].decode("ascii")
2753
fpr = request[2].decode("ascii")
2754
address = request[3]
2756
for c in self.clients.values():
2757
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2758
"27AE41E4649B934CA495991B7852B855"):
2760
if key_id and c.key_id == key_id:
2763
if fpr and c.fingerprint == fpr:
1865
if command == 'init':
1867
address = request[2]
1869
for c in self.clients.itervalues():
1870
if c.fingerprint == fpr:
2767
logger.info("Client not found for key ID: %s, address"
2768
": %s", key_id or fpr, address)
1874
logger.info("Client not found for fingerprint: %s, ad"
1875
"dress: %s", fpr, address)
2769
1876
if self.use_dbus:
2770
1877
# Emit D-Bus signal
2771
mandos_dbus_service.ClientNotFound(key_id or fpr,
1878
mandos_dbus_service.ClientNotFound(fpr,
2773
1880
parent_pipe.send(False)
2777
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2778
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2779
functools.partial(self.handle_ipc,
2780
parent_pipe=parent_pipe,
2782
client_object=client))
1883
gobject.io_add_watch(parent_pipe.fileno(),
1884
gobject.IO_IN | gobject.IO_HUP,
1885
functools.partial(self.handle_ipc,
2783
1891
parent_pipe.send(True)
2784
1892
# remove the old hook in favor of the new above hook on
2787
if command == "funcall":
1895
if command == 'funcall':
2788
1896
funcname = request[1]
2789
1897
args = request[2]
2790
1898
kwargs = request[3]
2792
parent_pipe.send(("data", getattr(client_object,
1900
parent_pipe.send(('data', getattr(client_object,
2793
1901
funcname)(*args,
2796
if command == "getattr":
1904
if command == 'getattr':
2797
1905
attrname = request[1]
2798
if isinstance(client_object.__getattribute__(attrname),
2799
collections.abc.Callable):
2800
parent_pipe.send(("function", ))
1906
if callable(client_object.__getattribute__(attrname)):
1907
parent_pipe.send(('function',))
2803
"data", client_object.__getattribute__(attrname)))
2805
if command == "setattr":
1909
parent_pipe.send(('data', client_object
1910
.__getattribute__(attrname)))
1912
if command == 'setattr':
2806
1913
attrname = request[1]
2807
1914
value = request[2]
2808
1915
setattr(client_object, attrname, value)
2813
def rfc3339_duration_to_delta(duration):
2814
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2816
>>> timedelta = datetime.timedelta
2817
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2819
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2821
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2823
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2825
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2827
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2829
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2834
# Parsing an RFC 3339 duration with regular expressions is not
2835
# possible - there would have to be multiple places for the same
2836
# values, like seconds. The current code, while more esoteric, is
2837
# cleaner without depending on a parsing library. If Python had a
2838
# built-in library for parsing we would use it, but we'd like to
2839
# avoid excessive use of external libraries.
2841
# New type for defining tokens, syntax, and semantics all-in-one
2842
Token = collections.namedtuple("Token", (
2843
"regexp", # To match token; if "value" is not None, must have
2844
# a "group" containing digits
2845
"value", # datetime.timedelta or None
2846
"followers")) # Tokens valid after this token
2847
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2848
# the "duration" ABNF definition in RFC 3339, Appendix A.
2849
token_end = Token(re.compile(r"$"), None, frozenset())
2850
token_second = Token(re.compile(r"(\d+)S"),
2851
datetime.timedelta(seconds=1),
2852
frozenset((token_end, )))
2853
token_minute = Token(re.compile(r"(\d+)M"),
2854
datetime.timedelta(minutes=1),
2855
frozenset((token_second, token_end)))
2856
token_hour = Token(re.compile(r"(\d+)H"),
2857
datetime.timedelta(hours=1),
2858
frozenset((token_minute, token_end)))
2859
token_time = Token(re.compile(r"T"),
2861
frozenset((token_hour, token_minute,
2863
token_day = Token(re.compile(r"(\d+)D"),
2864
datetime.timedelta(days=1),
2865
frozenset((token_time, token_end)))
2866
token_month = Token(re.compile(r"(\d+)M"),
2867
datetime.timedelta(weeks=4),
2868
frozenset((token_day, token_end)))
2869
token_year = Token(re.compile(r"(\d+)Y"),
2870
datetime.timedelta(weeks=52),
2871
frozenset((token_month, token_end)))
2872
token_week = Token(re.compile(r"(\d+)W"),
2873
datetime.timedelta(weeks=1),
2874
frozenset((token_end, )))
2875
token_duration = Token(re.compile(r"P"), None,
2876
frozenset((token_year, token_month,
2877
token_day, token_time,
2879
# Define starting values:
2881
value = datetime.timedelta()
2883
# Following valid tokens
2884
followers = frozenset((token_duration, ))
2885
# String left to parse
2887
# Loop until end token is found
2888
while found_token is not token_end:
2889
# Search for any currently valid tokens
2890
for token in followers:
2891
match = token.regexp.match(s)
2892
if match is not None:
2894
if token.value is not None:
2895
# Value found, parse digits
2896
factor = int(match.group(1), 10)
2897
# Add to value so far
2898
value += factor * token.value
2899
# Strip token from string
2900
s = token.regexp.sub("", s, 1)
2903
# Set valid next tokens
2904
followers = found_token.followers
2907
# No currently valid tokens were found
2908
raise ValueError("Invalid RFC 3339 duration: {!r}"
2914
1920
def string_to_delta(interval):
2915
1921
"""Parse a string and return a datetime.timedelta
2917
>>> string_to_delta("7d") == datetime.timedelta(7)
2919
>>> string_to_delta("60s") == datetime.timedelta(0, 60)
2921
>>> string_to_delta("60m") == datetime.timedelta(0, 3600)
2923
>>> string_to_delta("24h") == datetime.timedelta(1)
2925
>>> string_to_delta("1w") == datetime.timedelta(7)
2927
>>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)
1923
>>> string_to_delta('7d')
1924
datetime.timedelta(7)
1925
>>> string_to_delta('60s')
1926
datetime.timedelta(0, 60)
1927
>>> string_to_delta('60m')
1928
datetime.timedelta(0, 3600)
1929
>>> string_to_delta('24h')
1930
datetime.timedelta(1)
1931
>>> string_to_delta('1w')
1932
datetime.timedelta(7)
1933
>>> string_to_delta('5m 30s')
1934
datetime.timedelta(0, 330)
2932
return rfc3339_duration_to_delta(interval)
2936
1936
timevalue = datetime.timedelta(0)
2937
1937
for s in interval.split():
1939
suffix = unicode(s[-1])
2940
1940
value = int(s[:-1])
2941
1941
if suffix == "d":
2942
1942
delta = datetime.timedelta(value)
3014
2014
parser.add_argument("--no-dbus", action="store_false",
3015
2015
dest="use_dbus", help="Do not provide D-Bus"
3016
" system bus interface", default=None)
2016
" system bus interface")
3017
2017
parser.add_argument("--no-ipv6", action="store_false",
3018
dest="use_ipv6", help="Do not use IPv6",
2018
dest="use_ipv6", help="Do not use IPv6")
3020
2019
parser.add_argument("--no-restore", action="store_false",
3021
2020
dest="restore", help="Do not restore stored"
3022
" state", default=None)
3023
parser.add_argument("--socket", type=int,
3024
help="Specify a file descriptor to a network"
3025
" socket to use instead of creating one")
3026
2022
parser.add_argument("--statedir", metavar="DIR",
3027
2023
help="Directory to save/restore state in")
3028
parser.add_argument("--foreground", action="store_true",
3029
help="Run in foreground", default=None)
3030
parser.add_argument("--no-zeroconf", action="store_false",
3031
dest="zeroconf", help="Do not use Zeroconf",
3034
2025
options = parser.parse_args()
3036
2032
# Default values for config file for server-global settings
3037
if gnutls.has_rawpk:
3038
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3039
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3041
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3042
":+SIGN-DSA-SHA256")
3043
server_defaults = {"interface": "",
3047
"priority": priority,
3048
"servicename": "Mandos",
3054
"statedir": "/var/lib/mandos",
3055
"foreground": "False",
2033
server_defaults = { "interface": "",
2038
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2039
"servicename": "Mandos",
2044
"statedir": "/var/lib/mandos"
3060
2047
# Parse config file for server-global settings
3061
server_config = configparser.ConfigParser(server_defaults)
2048
server_config = configparser.SafeConfigParser(server_defaults)
3062
2049
del server_defaults
3063
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3064
# Convert the ConfigParser object to a dict
2050
server_config.read(os.path.join(options.configdir,
2052
# Convert the SafeConfigParser object to a dict
3065
2053
server_settings = server_config.defaults()
3066
2054
# Use the appropriate methods on the non-string config options
3067
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3068
"foreground", "zeroconf"):
2055
for option in ("debug", "use_dbus", "use_ipv6"):
3069
2056
server_settings[option] = server_config.getboolean("DEFAULT",
3071
2058
if server_settings["port"]:
3072
2059
server_settings["port"] = server_config.getint("DEFAULT",
3074
if server_settings["socket"]:
3075
server_settings["socket"] = server_config.getint("DEFAULT",
3077
# Later, stdin will, and stdout and stderr might, be dup'ed
3078
# over with an opened os.devnull. But we don't want this to
3079
# happen with a supplied network socket.
3080
if 0 <= server_settings["socket"] <= 2:
3081
server_settings["socket"] = os.dup(server_settings
3083
2061
del server_config
3085
2063
# Override the settings from the config file with command line
3086
2064
# options, if set.
3087
2065
for option in ("interface", "address", "port", "debug",
3088
"priority", "servicename", "configdir", "use_dbus",
3089
"use_ipv6", "debuglevel", "restore", "statedir",
3090
"socket", "foreground", "zeroconf"):
2066
"priority", "servicename", "configdir",
2067
"use_dbus", "use_ipv6", "debuglevel", "restore",
3091
2069
value = getattr(options, option)
3092
2070
if value is not None:
3093
2071
server_settings[option] = value
3095
2073
# Force all strings to be unicode
3096
2074
for option in server_settings.keys():
3097
if isinstance(server_settings[option], bytes):
3098
server_settings[option] = (server_settings[option]
3100
# Force all boolean options to be boolean
3101
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3102
"foreground", "zeroconf"):
3103
server_settings[option] = bool(server_settings[option])
3104
# Debug implies foreground
3105
if server_settings["debug"]:
3106
server_settings["foreground"] = True
2075
if type(server_settings[option]) is str:
2076
server_settings[option] = unicode(server_settings[option])
3107
2077
# Now we have our good server settings in "server_settings"
3109
2079
##################################################################
3111
if (not server_settings["zeroconf"]
3112
and not (server_settings["port"]
3113
or server_settings["socket"] != "")):
3114
parser.error("Needs port or socket to work without Zeroconf")
3116
2081
# For convenience
3117
2082
debug = server_settings["debug"]
3118
2083
debuglevel = server_settings["debuglevel"]
3132
2095
level = getattr(logging, debuglevel.upper())
3133
2096
initlogger(debug, level)
3135
2098
if server_settings["servicename"] != "Mandos":
3136
syslogger.setFormatter(
3137
logging.Formatter("Mandos ({}) [%(process)d]:"
3138
" %(levelname)s: %(message)s".format(
3139
server_settings["servicename"])))
2099
syslogger.setFormatter(logging.Formatter
2100
('Mandos (%s) [%%(process)d]:'
2101
' %%(levelname)s: %%(message)s'
2102
% server_settings["servicename"]))
3141
2104
# Parse config file with clients
3142
client_config = configparser.ConfigParser(Client.client_defaults)
2105
client_config = configparser.SafeConfigParser(Client
3143
2107
client_config.read(os.path.join(server_settings["configdir"],
3144
2108
"clients.conf"))
3146
2110
global mandos_dbus_service
3147
2111
mandos_dbus_service = None
3150
if server_settings["socket"] != "":
3151
socketfd = server_settings["socket"]
3152
tcp_server = MandosServer(
3153
(server_settings["address"], server_settings["port"]),
3155
interface=(server_settings["interface"] or None),
3157
gnutls_priority=server_settings["priority"],
3161
pidfilename = "/run/mandos.pid"
3162
if not os.path.isdir("/run/."):
3163
pidfilename = "/var/run/mandos.pid"
3166
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3167
except IOError as e:
3168
logger.error("Could not open file %r", pidfilename,
3171
for name, group in (("_mandos", "_mandos"),
3172
("mandos", "mandos"),
3173
("nobody", "nogroup")):
3175
uid = pwd.getpwnam(name).pw_uid
3176
gid = pwd.getpwnam(group).pw_gid
2113
tcp_server = MandosServer((server_settings["address"],
2114
server_settings["port"]),
2116
interface=(server_settings["interface"]
2120
server_settings["priority"],
2123
pidfilename = "/var/run/mandos.pid"
2125
pidfile = open(pidfilename, "w")
2127
logger.error("Could not open file %r", pidfilename)
2130
uid = pwd.getpwnam("_mandos").pw_uid
2131
gid = pwd.getpwnam("_mandos").pw_gid
2134
uid = pwd.getpwnam("mandos").pw_uid
2135
gid = pwd.getpwnam("mandos").pw_gid
3178
2136
except KeyError:
2138
uid = pwd.getpwnam("nobody").pw_uid
2139
gid = pwd.getpwnam("nobody").pw_gid
3187
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3189
2146
except OSError as error:
3190
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3191
.format(uid, gid, os.strerror(error.errno)))
3192
if error.errno != errno.EPERM:
2147
if error[0] != errno.EPERM:
3196
2151
# Enable all possible GnuTLS debugging
3198
2153
# "Use a log level over 10 to enable all debugging options."
3199
2154
# - GnuTLS manual
3200
gnutls.global_set_log_level(11)
2155
gnutls.library.functions.gnutls_global_set_log_level(11)
2157
@gnutls.library.types.gnutls_log_func
3203
2158
def debug_gnutls(level, string):
3204
logger.debug("GnuTLS: %s",
3205
string[:-1].decode("utf-8",
3208
gnutls.global_set_log_function(debug_gnutls)
2159
logger.debug("GnuTLS: %s", string[:-1])
2161
(gnutls.library.functions
2162
.gnutls_global_set_log_function(debug_gnutls))
3210
2164
# Redirect stdin so all checkers get /dev/null
3211
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2165
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3212
2166
os.dup2(null, sys.stdin.fileno())
3216
2170
# Need to fork before connecting to D-Bus
3218
2172
# Close all input and output, do double fork, etc.
3221
if gi.version_info < (3, 10, 2):
3222
# multiprocessing will use threads, so before we use GLib we
3223
# need to inform GLib that threads will be used.
2175
gobject.threads_init()
3226
2177
global main_loop
3227
2178
# From the Avahi example code
3228
DBusGMainLoop(set_as_default=True)
3229
main_loop = GLib.MainLoop()
2179
DBusGMainLoop(set_as_default=True )
2180
main_loop = gobject.MainLoop()
3230
2181
bus = dbus.SystemBus()
3231
2182
# End of Avahi example code
3234
2185
bus_name = dbus.service.BusName("se.recompile.Mandos",
3237
old_bus_name = dbus.service.BusName(
3238
"se.bsnet.fukt.Mandos", bus,
3240
except dbus.exceptions.DBusException as e:
3241
logger.error("Disabling D-Bus:", exc_info=e)
2186
bus, do_not_queue=True)
2187
old_bus_name = (dbus.service.BusName
2188
("se.bsnet.fukt.Mandos", bus,
2190
except dbus.exceptions.NameExistsException as e:
2191
logger.error(unicode(e) + ", disabling D-Bus")
3242
2192
use_dbus = False
3243
2193
server_settings["use_dbus"] = False
3244
2194
tcp_server.use_dbus = False
3246
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3247
service = AvahiServiceToSyslog(
3248
name=server_settings["servicename"],
3249
servicetype="_mandos._tcp",
3252
if server_settings["interface"]:
3253
service.interface = if_nametoindex(
3254
server_settings["interface"].encode("utf-8"))
2195
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2196
service = AvahiServiceToSyslog(name =
2197
server_settings["servicename"],
2198
servicetype = "_mandos._tcp",
2199
protocol = protocol, bus = bus)
2200
if server_settings["interface"]:
2201
service.interface = (if_nametoindex
2202
(str(server_settings["interface"])))
3256
2204
global multiprocessing_manager
3257
2205
multiprocessing_manager = multiprocessing.Manager()
3259
2207
client_class = Client
3261
client_class = functools.partial(ClientDBus, bus=bus)
2209
client_class = functools.partial(ClientDBusTransitional,
3263
2212
client_settings = Client.config_parser(client_config)
3264
2213
old_client_settings = {}
3265
2214
clients_data = {}
3267
# This is used to redirect stdout and stderr for checker processes
3269
wnull = open(os.devnull, "w") # A writable /dev/null
3270
# Only used if server is running in foreground but not in debug
3272
if debug or not foreground:
3275
2216
# Get client data and settings from last running state.
3276
2217
if server_settings["restore"]:
3278
2219
with open(stored_state_path, "rb") as stored_state:
3279
if sys.version_info.major == 2:
3280
clients_data, old_client_settings = pickle.load(
3283
bytes_clients_data, bytes_old_client_settings = (
3284
pickle.load(stored_state, encoding="bytes"))
3285
# Fix bytes to strings
3288
clients_data = {(key.decode("utf-8")
3289
if isinstance(key, bytes)
3292
bytes_clients_data.items()}
3293
del bytes_clients_data
3294
for key in clients_data:
3295
value = {(k.decode("utf-8")
3296
if isinstance(k, bytes) else k): v
3298
clients_data[key].items()}
3299
clients_data[key] = value
3301
value["client_structure"] = [
3303
if isinstance(s, bytes)
3305
value["client_structure"]]
3306
# .name, .host, and .checker_command
3307
for k in ("name", "host", "checker_command"):
3308
if isinstance(value[k], bytes):
3309
value[k] = value[k].decode("utf-8")
3310
if "key_id" not in value:
3311
value["key_id"] = ""
3312
elif "fingerprint" not in value:
3313
value["fingerprint"] = ""
3314
# old_client_settings
3316
old_client_settings = {
3317
(key.decode("utf-8")
3318
if isinstance(key, bytes)
3321
bytes_old_client_settings.items()}
3322
del bytes_old_client_settings
3323
# .host and .checker_command
3324
for value in old_client_settings.values():
3325
for attribute in ("host", "checker_command"):
3326
if isinstance(value[attribute], bytes):
3327
value[attribute] = (value[attribute]
2220
clients_data, old_client_settings = (pickle.load
3329
2222
os.remove(stored_state_path)
3330
2223
except IOError as e:
3331
if e.errno == errno.ENOENT:
3332
logger.warning("Could not load persistent state:"
3333
" {}".format(os.strerror(e.errno)))
3335
logger.critical("Could not load persistent state:",
2224
logger.warning("Could not load persistent state: {0}"
2226
if e.errno != errno.ENOENT:
3338
2228
except EOFError as e:
3339
2229
logger.warning("Could not load persistent state: "
2230
"EOFError: {0}".format(e))
3343
2232
with PGPEngine() as pgp:
3344
for client_name, client in clients_data.items():
3345
# Skip removed clients
3346
if client_name not in client_settings:
2233
for client_name, client in clients_data.iteritems():
3349
2234
# Decide which value to use after restoring saved state.
3350
2235
# We have three different values: Old config file,
3351
2236
# new config file, and saved state.
3410
2295
- set(old_client_settings)):
3411
2296
clients_data[client_name] = client_settings[client_name]
3413
# Create all client objects
3414
for client_name, client in clients_data.items():
2298
# Create clients all clients
2299
for client_name, client in clients_data.iteritems():
3415
2300
tcp_server.clients[client_name] = client_class(
3418
server_settings=server_settings)
2301
name = client_name, settings = client)
3420
2303
if not tcp_server.clients:
3421
2304
logger.warning("No clients defined")
3424
if pidfile is not None:
3428
print(pid, file=pidfile)
3430
logger.error("Could not write to file %r with PID %d",
2310
pidfile.write(str(pid) + "\n".encode("utf-8"))
2313
logger.error("Could not write to file %r with PID %d",
2316
# "pidfile" was never created
3433
2318
del pidfilename
3435
for termsig in (signal.SIGHUP, signal.SIGTERM):
3436
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3437
lambda: main_loop.quit() and False)
2319
signal.signal(signal.SIGINT, signal.SIG_IGN)
2321
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2322
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3441
@alternate_dbus_interfaces(
3442
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3443
class MandosDBusService(DBusObjectWithObjectManager):
2325
class MandosDBusService(dbus.service.Object):
3444
2326
"""A D-Bus proxy object"""
3446
2327
def __init__(self):
3447
2328
dbus.service.Object.__init__(self, bus, "/")
3449
2329
_interface = "se.recompile.Mandos"
3451
2331
@dbus.service.signal(_interface, signature="o")
3452
2332
def ClientAdded(self, objpath):
3456
2336
@dbus.service.signal(_interface, signature="ss")
3457
def ClientNotFound(self, key_id, address):
2337
def ClientNotFound(self, fingerprint, address):
3461
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3463
2341
@dbus.service.signal(_interface, signature="os")
3464
2342
def ClientRemoved(self, objpath, name):
3468
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3470
2346
@dbus.service.method(_interface, out_signature="ao")
3471
2347
def GetAllClients(self):
3473
return dbus.Array(c.dbus_object_path for c in
3474
tcp_server.clients.values())
3476
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2349
return dbus.Array(c.dbus_object_path
2351
tcp_server.clients.itervalues())
3478
2353
@dbus.service.method(_interface,
3479
2354
out_signature="a{oa{sv}}")
3480
2355
def GetAllClientsWithProperties(self):
3482
2357
return dbus.Dictionary(
3483
{c.dbus_object_path: c.GetAll(
3484
"se.recompile.Mandos.Client")
3485
for c in tcp_server.clients.values()},
2358
((c.dbus_object_path, c.GetAll(""))
2359
for c in tcp_server.clients.itervalues()),
3486
2360
signature="oa{sv}")
3488
2362
@dbus.service.method(_interface, in_signature="o")
3489
2363
def RemoveClient(self, object_path):
3491
for c in tcp_server.clients.values():
2365
for c in tcp_server.clients.itervalues():
3492
2366
if c.dbus_object_path == object_path:
3493
2367
del tcp_server.clients[c.name]
3494
2368
c.remove_from_connection()
3495
# Don't signal the disabling
2369
# Don't signal anything except ClientRemoved
3496
2370
c.disable(quiet=True)
3497
# Emit D-Bus signal for removal
3498
self.client_removed_signal(c)
2372
self.ClientRemoved(object_path, c.name)
3500
2374
raise KeyError(object_path)
3504
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3505
out_signature="a{oa{sa{sv}}}")
3506
def GetManagedObjects(self):
3508
return dbus.Dictionary(
3509
{client.dbus_object_path:
3511
{interface: client.GetAll(interface)
3513
client._get_all_interface_names()})
3514
for client in tcp_server.clients.values()})
3516
def client_added_signal(self, client):
3517
"""Send the new standard signal and the old signal"""
3519
# New standard signal
3520
self.InterfacesAdded(
3521
client.dbus_object_path,
3523
{interface: client.GetAll(interface)
3525
client._get_all_interface_names()}))
3527
self.ClientAdded(client.dbus_object_path)
3529
def client_removed_signal(self, client):
3530
"""Send the new standard signal and the old signal"""
3532
# New standard signal
3533
self.InterfacesRemoved(
3534
client.dbus_object_path,
3535
client._get_all_interface_names())
3537
self.ClientRemoved(client.dbus_object_path,
3540
mandos_dbus_service = MandosDBusService()
3542
# Save modules to variables to exempt the modules from being
3543
# unloaded before the function registered with atexit() is run.
3544
mp = multiprocessing
2378
class MandosDBusServiceTransitional(MandosDBusService):
2379
__metaclass__ = AlternateDBusNamesMetaclass
2380
mandos_dbus_service = MandosDBusServiceTransitional()
3548
2383
"Cleanup function; run on exit"
3552
mp.active_children()
2386
multiprocessing.active_children()
3554
2387
if not (tcp_server.clients or client_settings):
3557
2390
# Store client before exiting. Secrets are encrypted with key
3558
2391
# based on what config file has. If config file is
3559
2392
# removed/edited, old secret will thus be unrecovable.
3561
2394
with PGPEngine() as pgp:
3562
for client in tcp_server.clients.values():
2395
for client in tcp_server.clients.itervalues():
3563
2396
key = client_settings[client.name]["secret"]
3564
2397
client.encrypted_secret = pgp.encrypt(client.secret,
3566
2399
client_dict = {}
3568
2401
# A list of attributes that can not be pickled
3570
exclude = {"bus", "changedstate", "secret",
3571
"checker", "server_settings"}
3572
for name, typ in inspect.getmembers(dbus.service
2403
exclude = set(("bus", "changedstate", "secret",
2405
for name, typ in (inspect.getmembers
2406
(dbus.service.Object)):
3574
2407
exclude.add(name)
3576
2409
client_dict["encrypted_secret"] = (client
3577
2410
.encrypted_secret)
3578
2411
for attr in client.client_structure:
3579
2412
if attr not in exclude:
3580
2413
client_dict[attr] = getattr(client, attr)
3582
2415
clients[client.name] = client_dict
3583
2416
del client_settings[client.name]["secret"]
3586
with tempfile.NamedTemporaryFile(
3590
dir=os.path.dirname(stored_state_path),
3591
delete=False) as stored_state:
3592
pickle.dump((clients, client_settings), stored_state,
3594
tempname = stored_state.name
2419
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2422
(stored_state_path))
2423
with os.fdopen(tempfd, "wb") as stored_state:
2424
pickle.dump((clients, client_settings), stored_state)
3595
2425
os.rename(tempname, stored_state_path)
3596
2426
except (IOError, OSError) as e:
2427
logger.warning("Could not save persistent state: {0}"
3599
2431
os.remove(tempname)
3600
2432
except NameError:
3602
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3603
logger.warning("Could not save persistent state: {}"
3604
.format(os.strerror(e.errno)))
3606
logger.warning("Could not save persistent state:",
2434
if e.errno not in set((errno.ENOENT, errno.EACCES,
3610
2438
# Delete all clients, and settings from config
3611
2439
while tcp_server.clients:
3612
2440
name, client = tcp_server.clients.popitem()
3614
2442
client.remove_from_connection()
3615
# Don't signal the disabling
2443
# Don't signal anything except ClientRemoved
3616
2444
client.disable(quiet=True)
3617
# Emit D-Bus signal for removal
3619
mandos_dbus_service.client_removed_signal(client)
2447
mandos_dbus_service.ClientRemoved(client
3620
2450
client_settings.clear()
3622
2452
atexit.register(cleanup)
3624
for client in tcp_server.clients.values():
2454
for client in tcp_server.clients.itervalues():
3626
# Emit D-Bus signal for adding
3627
mandos_dbus_service.client_added_signal(client)
2457
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3628
2458
# Need to initiate checking of clients
3629
2459
if client.enabled:
3630
2460
client.init_checker()
3632
2462
tcp_server.enable()
3633
2463
tcp_server.server_activate()
3635
2465
# Find out what port we got
3637
service.port = tcp_server.socket.getsockname()[1]
2466
service.port = tcp_server.socket.getsockname()[1]
3639
2468
logger.info("Now listening on address %r, port %d,"
3640
" flowinfo %d, scope_id %d",
3641
*tcp_server.socket.getsockname())
2469
" flowinfo %d, scope_id %d"
2470
% tcp_server.socket.getsockname())
3643
logger.info("Now listening on address %r, port %d",
3644
*tcp_server.socket.getsockname())
3646
# service.interface = tcp_server.socket.getsockname()[3]
2472
logger.info("Now listening on address %r, port %d"
2473
% tcp_server.socket.getsockname())
2475
#service.interface = tcp_server.socket.getsockname()[3]
3650
# From the Avahi example code
3653
except dbus.exceptions.DBusException as error:
3654
logger.critical("D-Bus Exception", exc_info=error)
3657
# End of Avahi example code
3660
GLib.IOChannel.unix_new(tcp_server.fileno()),
3661
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3662
lambda *args, **kwargs: (tcp_server.handle_request
3663
(*args[2:], **kwargs) or True))
2478
# From the Avahi example code
2481
except dbus.exceptions.DBusException as error:
2482
logger.critical("DBusException: %s", error)
2485
# End of Avahi example code
2487
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2488
lambda *args, **kwargs:
2489
(tcp_server.handle_request
2490
(*args[2:], **kwargs) or True))
3665
2492
logger.debug("Starting main loop")
3666
2493
main_loop.run()
3667
2494
except AvahiError as error:
3668
logger.critical("Avahi Error", exc_info=error)
2495
logger.critical("AvahiError: %s", error)
3671
2498
except KeyboardInterrupt: