69
import cPickle as pickle
63
import cPickle as pickle
72
64
import multiprocessing
81
71
import dbus.service
82
from gi.repository import GLib
83
74
from dbus.mainloop.glib import DBusGMainLoop
86
77
import xml.dom.minidom
89
# Try to find the value of SO_BINDTODEVICE:
91
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
92
# newer, and it is also the most natural place for it:
93
82
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
94
83
except AttributeError:
96
# This is where SO_BINDTODEVICE was up to and including Python
98
85
from IN import SO_BINDTODEVICE
99
86
except ImportError:
100
# In Python 2.7 it seems to have been removed entirely.
101
# Try running the C preprocessor:
103
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
stdin=subprocess.PIPE,
106
stdout=subprocess.PIPE)
107
stdout = cc.communicate(
108
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
109
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
110
except (OSError, ValueError, IndexError):
112
SO_BINDTODEVICE = None
114
if sys.version_info.major == 2:
87
SO_BINDTODEVICE = None
118
90
stored_state_file = "clients.pickle"
120
92
logger = logging.getLogger()
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
124
if_nametoindex = ctypes.cdll.LoadLibrary(
125
ctypes.util.find_library("c")).if_nametoindex
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
126
101
except (OSError, AttributeError):
128
102
def if_nametoindex(interface):
129
103
"Get an interface index the hard way, i.e. using fcntl()"
130
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
131
105
with contextlib.closing(socket.socket()) as s:
132
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
133
struct.pack(b"16s16x", interface))
134
interface_index = struct.unpack("I", ifreq[16:20])[0]
107
struct.pack(str("16s16x"),
109
interface_index = struct.unpack(str("I"),
135
111
return interface_index
138
def copy_function(func):
139
"""Make a copy of a function"""
140
if sys.version_info.major == 2:
141
return types.FunctionType(func.func_code,
147
return types.FunctionType(func.__code__,
154
114
def initlogger(debug, level=logging.WARNING):
155
115
"""init logger and add loglevel"""
158
syslogger = (logging.handlers.SysLogHandler(
159
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
160
address = "/dev/log"))
161
117
syslogger.setFormatter(logging.Formatter
162
118
('Mandos [%(process)d]: %(levelname)s:'
228
172
def password_encode(self, password):
229
173
# Passphrase can not be empty and can not contain newlines or
230
174
# NUL bytes. So we prefix it and hex encode it.
231
encoded = b"mandos" + binascii.hexlify(password)
232
if len(encoded) > 2048:
233
# GnuPG can't handle long passwords, so encode differently
234
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
235
.replace(b"\n", b"\\n")
236
.replace(b"\0", b"\\x00"))
175
return b"mandos" + binascii.hexlify(password)
239
177
def encrypt(self, data, password):
240
passphrase = self.password_encode(password)
241
with tempfile.NamedTemporaryFile(
242
dir=self.tempdir) as passfile:
243
passfile.write(passphrase)
245
proc = subprocess.Popen([self.gpg, '--symmetric',
249
stdin = subprocess.PIPE,
250
stdout = subprocess.PIPE,
251
stderr = subprocess.PIPE)
252
ciphertext, err = proc.communicate(input = data)
253
if proc.returncode != 0:
178
self.gnupg.passphrase = self.password_encode(password)
179
with open(os.devnull, "w") as devnull:
181
proc = self.gnupg.run(['--symmetric'],
182
create_fhs=['stdin', 'stdout'],
183
attach_fhs={'stderr': devnull})
184
with contextlib.closing(proc.handles['stdin']) as f:
186
with contextlib.closing(proc.handles['stdout']) as f:
187
ciphertext = f.read()
191
self.gnupg.passphrase = None
255
192
return ciphertext
257
194
def decrypt(self, data, password):
258
passphrase = self.password_encode(password)
259
with tempfile.NamedTemporaryFile(
260
dir = self.tempdir) as passfile:
261
passfile.write(passphrase)
263
proc = subprocess.Popen([self.gpg, '--decrypt',
267
stdin = subprocess.PIPE,
268
stdout = subprocess.PIPE,
269
stderr = subprocess.PIPE)
270
decrypted_plaintext, err = proc.communicate(input = data)
271
if proc.returncode != 0:
195
self.gnupg.passphrase = self.password_encode(password)
196
with open(os.devnull, "w") as devnull:
198
proc = self.gnupg.run(['--decrypt'],
199
create_fhs=['stdin', 'stdout'],
200
attach_fhs={'stderr': devnull})
201
with contextlib.closing(proc.handles['stdin']) as f:
203
with contextlib.closing(proc.handles['stdout']) as f:
204
decrypted_plaintext = f.read()
208
self.gnupg.passphrase = None
273
209
return decrypted_plaintext
275
# Pretend that we have an Avahi module
277
"""This isn't so much a class as it is a module-like namespace.
278
It is instantiated once, and simulates having an Avahi module."""
279
IF_UNSPEC = -1 # avahi-common/address.h
280
PROTO_UNSPEC = -1 # avahi-common/address.h
281
PROTO_INET = 0 # avahi-common/address.h
282
PROTO_INET6 = 1 # avahi-common/address.h
283
DBUS_NAME = "org.freedesktop.Avahi"
284
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
285
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
286
DBUS_PATH_SERVER = "/"
287
def string_array_to_txt_array(self, t):
288
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
289
for s in t), signature="ay")
290
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
291
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
292
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
293
SERVER_INVALID = 0 # avahi-common/defs.h
294
SERVER_REGISTERING = 1 # avahi-common/defs.h
295
SERVER_RUNNING = 2 # avahi-common/defs.h
296
SERVER_COLLISION = 3 # avahi-common/defs.h
297
SERVER_FAILURE = 4 # avahi-common/defs.h
300
212
class AvahiError(Exception):
301
213
def __init__(self, value, *args, **kwargs):
302
214
self.value = value
303
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))
307
219
class AvahiServiceError(AvahiError):
311
222
class AvahiGroupError(AvahiError):
485
374
follow_name_owner_changes=True),
486
375
avahi.DBUS_INTERFACE_SERVER)
487
376
self.server.connect_to_signal("StateChanged",
488
self.server_state_changed)
377
self.server_state_changed)
489
378
self.server_state_changed(self.server.GetState())
492
380
class AvahiServiceToSyslog(AvahiService):
493
def rename(self, *args, **kwargs):
494
382
"""Add the new name to the syslog messages"""
495
ret = AvahiService.rename(self, *args, **kwargs)
496
syslogger.setFormatter(logging.Formatter(
497
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
383
ret = AvahiService.rename(self)
384
syslogger.setFormatter(logging.Formatter
385
('Mandos ({0}) [%(process)d]:'
386
' %(levelname)s: %(message)s'
501
# Pretend that we have a GnuTLS module
502
class GnuTLS(object):
503
"""This isn't so much a class as it is a module-like namespace.
504
It is instantiated once, and simulates having a GnuTLS module."""
506
_library = ctypes.cdll.LoadLibrary(
507
ctypes.util.find_library("gnutls"))
508
_need_version = b"3.3.0"
510
# Need to use class name "GnuTLS" here, since this method is
511
# called before the assignment to the "gnutls" global variable
513
if GnuTLS.check_version(self._need_version) is None:
514
raise GnuTLS.Error("Needs GnuTLS {} or later"
515
.format(self._need_version))
517
# Unless otherwise indicated, the constants and types below are
518
# all from the gnutls/gnutls.h C header file.
528
E_NO_CERTIFICATE_FOUND = -49
529
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
532
class session_int(ctypes.Structure):
534
session_t = ctypes.POINTER(session_int)
535
class certificate_credentials_st(ctypes.Structure):
537
certificate_credentials_t = ctypes.POINTER(
538
certificate_credentials_st)
539
certificate_type_t = ctypes.c_int
540
class datum_t(ctypes.Structure):
541
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
542
('size', ctypes.c_uint)]
543
class openpgp_crt_int(ctypes.Structure):
545
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
546
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
547
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
548
credentials_type_t = ctypes.c_int
549
transport_ptr_t = ctypes.c_void_p
550
close_request_t = ctypes.c_int
553
class Error(Exception):
554
# We need to use the class name "GnuTLS" here, since this
555
# exception might be raised from within GnuTLS.__init__,
556
# which is called before the assignment to the "gnutls"
557
# global variable has happened.
558
def __init__(self, message = None, code = None, args=()):
559
# Default usage is by a message string, but if a return
560
# code is passed, convert it to a string with
563
if message is None and code is not None:
564
message = GnuTLS.strerror(code)
565
return super(GnuTLS.Error, self).__init__(
568
class CertificateSecurityError(Error):
572
class Credentials(object):
574
self._c_object = gnutls.certificate_credentials_t()
575
gnutls.certificate_allocate_credentials(
576
ctypes.byref(self._c_object))
577
self.type = gnutls.CRD_CERTIFICATE
580
gnutls.certificate_free_credentials(self._c_object)
582
class ClientSession(object):
583
def __init__(self, socket, credentials = None):
584
self._c_object = gnutls.session_t()
585
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
586
gnutls.set_default_priority(self._c_object)
587
gnutls.transport_set_ptr(self._c_object, socket.fileno())
588
gnutls.handshake_set_private_extensions(self._c_object,
591
if credentials is None:
592
credentials = gnutls.Credentials()
593
gnutls.credentials_set(self._c_object, credentials.type,
594
ctypes.cast(credentials._c_object,
596
self.credentials = credentials
599
gnutls.deinit(self._c_object)
602
return gnutls.handshake(self._c_object)
604
def send(self, data):
608
data_len -= gnutls.record_send(self._c_object,
613
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
615
# Error handling functions
616
def _error_code(result):
617
"""A function to raise exceptions on errors, suitable
618
for the 'restype' attribute on ctypes functions"""
621
if result == gnutls.E_NO_CERTIFICATE_FOUND:
622
raise gnutls.CertificateSecurityError(code = result)
623
raise gnutls.Error(code = result)
625
def _retry_on_error(result, func, arguments):
626
"""A function to retry on some errors, suitable
627
for the 'errcheck' attribute on ctypes functions"""
629
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
630
return _error_code(result)
631
result = func(*arguments)
634
# Unless otherwise indicated, the function declarations below are
635
# all from the gnutls/gnutls.h C header file.
638
priority_set_direct = _library.gnutls_priority_set_direct
639
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
640
ctypes.POINTER(ctypes.c_char_p)]
641
priority_set_direct.restype = _error_code
643
init = _library.gnutls_init
644
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
645
init.restype = _error_code
647
set_default_priority = _library.gnutls_set_default_priority
648
set_default_priority.argtypes = [session_t]
649
set_default_priority.restype = _error_code
651
record_send = _library.gnutls_record_send
652
record_send.argtypes = [session_t, ctypes.c_void_p,
654
record_send.restype = ctypes.c_ssize_t
655
record_send.errcheck = _retry_on_error
657
certificate_allocate_credentials = (
658
_library.gnutls_certificate_allocate_credentials)
659
certificate_allocate_credentials.argtypes = [
660
ctypes.POINTER(certificate_credentials_t)]
661
certificate_allocate_credentials.restype = _error_code
663
certificate_free_credentials = (
664
_library.gnutls_certificate_free_credentials)
665
certificate_free_credentials.argtypes = [certificate_credentials_t]
666
certificate_free_credentials.restype = None
668
handshake_set_private_extensions = (
669
_library.gnutls_handshake_set_private_extensions)
670
handshake_set_private_extensions.argtypes = [session_t,
672
handshake_set_private_extensions.restype = None
674
credentials_set = _library.gnutls_credentials_set
675
credentials_set.argtypes = [session_t, credentials_type_t,
677
credentials_set.restype = _error_code
679
strerror = _library.gnutls_strerror
680
strerror.argtypes = [ctypes.c_int]
681
strerror.restype = ctypes.c_char_p
683
certificate_type_get = _library.gnutls_certificate_type_get
684
certificate_type_get.argtypes = [session_t]
685
certificate_type_get.restype = _error_code
687
certificate_get_peers = _library.gnutls_certificate_get_peers
688
certificate_get_peers.argtypes = [session_t,
689
ctypes.POINTER(ctypes.c_uint)]
690
certificate_get_peers.restype = ctypes.POINTER(datum_t)
692
global_set_log_level = _library.gnutls_global_set_log_level
693
global_set_log_level.argtypes = [ctypes.c_int]
694
global_set_log_level.restype = None
696
global_set_log_function = _library.gnutls_global_set_log_function
697
global_set_log_function.argtypes = [log_func]
698
global_set_log_function.restype = None
700
deinit = _library.gnutls_deinit
701
deinit.argtypes = [session_t]
702
deinit.restype = None
704
handshake = _library.gnutls_handshake
705
handshake.argtypes = [session_t]
706
handshake.restype = _error_code
707
handshake.errcheck = _retry_on_error
709
transport_set_ptr = _library.gnutls_transport_set_ptr
710
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
711
transport_set_ptr.restype = None
713
bye = _library.gnutls_bye
714
bye.argtypes = [session_t, close_request_t]
715
bye.restype = _error_code
716
bye.errcheck = _retry_on_error
718
check_version = _library.gnutls_check_version
719
check_version.argtypes = [ctypes.c_char_p]
720
check_version.restype = ctypes.c_char_p
722
# All the function declarations below are from gnutls/openpgp.h
724
openpgp_crt_init = _library.gnutls_openpgp_crt_init
725
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
726
openpgp_crt_init.restype = _error_code
728
openpgp_crt_import = _library.gnutls_openpgp_crt_import
729
openpgp_crt_import.argtypes = [openpgp_crt_t,
730
ctypes.POINTER(datum_t),
732
openpgp_crt_import.restype = _error_code
734
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
735
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
736
ctypes.POINTER(ctypes.c_uint)]
737
openpgp_crt_verify_self.restype = _error_code
739
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
740
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
741
openpgp_crt_deinit.restype = None
743
openpgp_crt_get_fingerprint = (
744
_library.gnutls_openpgp_crt_get_fingerprint)
745
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
749
openpgp_crt_get_fingerprint.restype = _error_code
751
# Remove non-public functions
752
del _error_code, _retry_on_error
753
# Create the global "gnutls" object, simulating a module
756
def call_pipe(connection, # : multiprocessing.Connection
757
func, *args, **kwargs):
758
"""This function is meant to be called by multiprocessing.Process
760
This function runs func(*args, **kwargs), and writes the resulting
761
return value on the provided multiprocessing.Connection.
763
connection.send(func(*args, **kwargs))
390
def timedelta_to_milliseconds(td):
391
"Convert a datetime.timedelta() to milliseconds"
392
return ((td.days * 24 * 60 * 60 * 1000)
393
+ (td.seconds * 1000)
394
+ (td.microseconds // 1000))
766
396
class Client(object):
767
397
"""A representation of a client host served by this server.
806
434
runtime_expansions: Allowed attributes for runtime expansion.
807
435
expires: datetime.datetime(); time (UTC) when a client will be
808
436
disabled, or None
809
server_settings: The server_settings dict from main()
812
439
runtime_expansions = ("approval_delay", "approval_duration",
813
"created", "enabled", "expires",
814
"fingerprint", "host", "interval",
815
"last_approval_request", "last_checked_ok",
440
"created", "enabled", "fingerprint",
441
"host", "interval", "last_checked_ok",
816
442
"last_enabled", "name", "timeout")
819
"extended_timeout": "PT15M",
821
"checker": "fping -q -- %%(host)s",
823
"approval_delay": "PT0S",
824
"approval_duration": "PT1S",
825
"approved_by_default": "True",
443
client_defaults = { "timeout": "5m",
444
"extended_timeout": "15m",
446
"checker": "fping -q -- %%(host)s",
448
"approval_delay": "0s",
449
"approval_duration": "1s",
450
"approved_by_default": "True",
454
def timeout_milliseconds(self):
455
"Return the 'timeout' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.timeout)
458
def extended_timeout_milliseconds(self):
459
"Return the 'extended_timeout' attribute in milliseconds"
460
return timedelta_to_milliseconds(self.extended_timeout)
462
def interval_milliseconds(self):
463
"Return the 'interval' attribute in milliseconds"
464
return timedelta_to_milliseconds(self.interval)
466
def approval_delay_milliseconds(self):
467
return timedelta_to_milliseconds(self.approval_delay)
830
470
def config_parser(config):
964
602
def init_checker(self):
965
603
# Schedule a new checker to be started an 'interval' from now,
966
604
# and every interval from then on.
967
if self.checker_initiator_tag is not None:
968
GLib.source_remove(self.checker_initiator_tag)
969
self.checker_initiator_tag = GLib.timeout_add(
970
int(self.interval.total_seconds() * 1000),
605
self.checker_initiator_tag = (gobject.timeout_add
606
(self.interval_milliseconds(),
972
608
# Schedule a disable() when 'timeout' has passed
973
if self.disable_initiator_tag is not None:
974
GLib.source_remove(self.disable_initiator_tag)
975
self.disable_initiator_tag = GLib.timeout_add(
976
int(self.timeout.total_seconds() * 1000), self.disable)
609
self.disable_initiator_tag = (gobject.timeout_add
610
(self.timeout_milliseconds(),
977
612
# Also start a new checker *right now*.
978
613
self.start_checker()
980
def checker_callback(self, source, condition, connection,
615
def checker_callback(self, pid, condition, command):
982
616
"""The checker has completed, so take appropriate actions."""
983
617
self.checker_callback_tag = None
984
618
self.checker = None
985
# Read return code from connection (see call_pipe)
986
returncode = connection.recv()
990
self.last_checker_status = returncode
991
self.last_checker_signal = None
619
if os.WIFEXITED(condition):
620
self.last_checker_status = os.WEXITSTATUS(condition)
992
621
if self.last_checker_status == 0:
993
622
logger.info("Checker for %(name)s succeeded",
995
624
self.checked_ok()
997
logger.info("Checker for %(name)s failed", vars(self))
626
logger.info("Checker for %(name)s failed",
999
629
self.last_checker_status = -1
1000
self.last_checker_signal = -returncode
1001
630
logger.warning("Checker for %(name)s crashed?",
1005
633
def checked_ok(self):
1006
634
"""Assert that the client has been seen, alive and well."""
1007
635
self.last_checked_ok = datetime.datetime.utcnow()
1008
636
self.last_checker_status = 0
1009
self.last_checker_signal = None
1010
637
self.bump_timeout()
1012
639
def bump_timeout(self, timeout=None):
1030
657
If a checker already exists, leave it running and do
1032
659
# The reason for not killing a running checker is that if we
1033
# did that, and if a checker (for some reason) started running
1034
# slowly and taking more than 'interval' time, then the client
1035
# would inevitably timeout, since no checker would get a
1036
# chance to run to completion. If we instead leave running
660
# did that, then if a checker (for some reason) started
661
# running slowly and taking more than 'interval' time, the
662
# client would inevitably timeout, since no checker would get
663
# a chance to run to completion. If we instead leave running
1037
664
# checkers alone, the checker would have to take more time
1038
665
# than 'timeout' for the client to be disabled, which is as it
1041
if self.checker is not None and not self.checker.is_alive():
1042
logger.warning("Checker was not alive; joining")
668
# If a checker exists, make sure it is not a zombie
670
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
671
except (AttributeError, OSError) as error:
672
if (isinstance(error, OSError)
673
and error.errno != errno.ECHILD):
677
logger.warning("Checker was a zombie")
678
gobject.source_remove(self.checker_callback_tag)
679
self.checker_callback(pid, status,
680
self.current_checker_command)
1045
681
# Start a new checker if needed
1046
682
if self.checker is None:
1047
# Escape attributes for the shell
1049
attr: re.escape(str(getattr(self, attr)))
1050
for attr in self.runtime_expansions }
1052
command = self.checker_command % escaped_attrs
1053
except TypeError as error:
1054
logger.error('Could not format string "%s"',
1055
self.checker_command,
684
# In case checker_command has exactly one % operator
685
command = self.checker_command % self.host
687
# Escape attributes for the shell
688
escaped_attrs = dict(
690
re.escape(unicode(str(getattr(self, attr, "")),
694
self.runtime_expansions)
697
command = self.checker_command % escaped_attrs
698
except TypeError as error:
699
logger.error('Could not format string "%s"',
700
self.checker_command, exc_info=error)
701
return True # Try again later
702
self.current_checker_command = command
704
logger.info("Starting checker %r for %s",
706
# We don't need to redirect stdout and stderr, since
707
# in normal mode, that is already done by daemon(),
708
# and in debug mode we don't want to. (Stdin is
709
# always replaced by /dev/null.)
710
self.checker = subprocess.Popen(command,
713
self.checker_callback_tag = (gobject.child_watch_add
715
self.checker_callback,
717
# The checker may have completed before the gobject
718
# watch was added. Check for this.
719
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
721
gobject.source_remove(self.checker_callback_tag)
722
self.checker_callback(pid, status, command)
723
except OSError as error:
724
logger.error("Failed to start subprocess",
1057
return True # Try again later
1058
self.current_checker_command = command
1059
logger.info("Starting checker %r for %s", command,
1061
# We don't need to redirect stdout and stderr, since
1062
# in normal mode, that is already done by daemon(),
1063
# and in debug mode we don't want to. (Stdin is
1064
# always replaced by /dev/null.)
1065
# The exception is when not debugging but nevertheless
1066
# running in the foreground; use the previously
1068
popen_args = { "close_fds": True,
1071
if (not self.server_settings["debug"]
1072
and self.server_settings["foreground"]):
1073
popen_args.update({"stdout": wnull,
1075
pipe = multiprocessing.Pipe(duplex = False)
1076
self.checker = multiprocessing.Process(
1078
args = (pipe[1], subprocess.call, command),
1079
kwargs = popen_args)
1080
self.checker.start()
1081
self.checker_callback_tag = GLib.io_add_watch(
1082
pipe[0].fileno(), GLib.IO_IN,
1083
self.checker_callback, pipe[0], command)
1084
# Re-run this periodically if run by GLib.timeout_add
726
# Re-run this periodically if run by gobject.timeout_add
1087
729
def stop_checker(self):
1088
730
"""Force the checker process, if any, to stop."""
1089
731
if self.checker_callback_tag:
1090
GLib.source_remove(self.checker_callback_tag)
732
gobject.source_remove(self.checker_callback_tag)
1091
733
self.checker_callback_tag = None
1092
734
if getattr(self, "checker", None) is None:
1094
736
logger.debug("Stopping checker for %(name)s", vars(self))
1095
self.checker.terminate()
738
self.checker.terminate()
740
#if self.checker.poll() is None:
741
# self.checker.kill()
742
except OSError as error:
743
if error.errno != errno.ESRCH: # No such process
1096
745
self.checker = None
1099
def dbus_service_property(dbus_interface,
748
def dbus_service_property(dbus_interface, signature="v",
749
access="readwrite", byte_arrays=False):
1103
750
"""Decorators for marking methods of a DBusObjectWithProperties to
1104
751
become properties on the D-Bus.
1205
846
If called like _is_dbus_thing("method") it returns a function
1206
847
suitable for use as predicate to inspect.getmembers().
1208
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
849
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1211
852
def _get_all_dbus_things(self, thing):
1212
853
"""Returns a generator of (name, attribute) pairs
1214
return ((getattr(athing.__get__(self), "_dbus_name", name),
855
return ((getattr(athing.__get__(self), "_dbus_name",
1215
857
athing.__get__(self))
1216
858
for cls in self.__class__.__mro__
1217
859
for name, athing in
1218
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1220
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1221
out_signature = "s",
1222
path_keyword = 'object_path',
1223
connection_keyword = 'connection')
1224
def Introspect(self, object_path, connection):
1225
"""Overloading of standard D-Bus method.
1227
Inserts annotation tags on methods and signals.
1229
xmlstring = dbus.service.Object.Introspect(self, object_path,
1232
document = xml.dom.minidom.parseString(xmlstring)
1234
for if_tag in document.getElementsByTagName("interface"):
1235
# Add annotation tags
1236
for typ in ("method", "signal"):
1237
for tag in if_tag.getElementsByTagName(typ):
1239
for name, prop in (self.
1240
_get_all_dbus_things(typ)):
1241
if (name == tag.getAttribute("name")
1242
and prop._dbus_interface
1243
== if_tag.getAttribute("name")):
1244
annots.update(getattr(
1245
prop, "_dbus_annotations", {}))
1246
for name, value in annots.items():
1247
ann_tag = document.createElement(
1249
ann_tag.setAttribute("name", name)
1250
ann_tag.setAttribute("value", value)
1251
tag.appendChild(ann_tag)
1252
# Add interface annotation tags
1253
for annotation, value in dict(
1254
itertools.chain.from_iterable(
1255
annotations().items()
1256
for name, annotations
1257
in self._get_all_dbus_things("interface")
1258
if name == if_tag.getAttribute("name")
1260
ann_tag = document.createElement("annotation")
1261
ann_tag.setAttribute("name", annotation)
1262
ann_tag.setAttribute("value", value)
1263
if_tag.appendChild(ann_tag)
1264
# Fix argument name for the Introspect method itself
1265
if (if_tag.getAttribute("name")
1266
== dbus.INTROSPECTABLE_IFACE):
1267
for cn in if_tag.getElementsByTagName("method"):
1268
if cn.getAttribute("name") == "Introspect":
1269
for arg in cn.getElementsByTagName("arg"):
1270
if (arg.getAttribute("direction")
1272
arg.setAttribute("name",
1274
xmlstring = document.toxml("utf-8")
1276
except (AttributeError, xml.dom.DOMException,
1277
xml.parsers.expat.ExpatError) as error:
1278
logger.error("Failed to override Introspection method",
1283
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1284
"""A D-Bus object with properties.
1286
Classes inheriting from this can use the dbus_service_property
1287
decorator to expose methods as D-Bus properties. It exposes the
1288
standard Get(), Set(), and GetAll() methods on the D-Bus.
860
inspect.getmembers(cls,
861
self._is_dbus_thing(thing)))
1291
863
def _get_dbus_property(self, interface_name, property_name):
1292
864
"""Returns a bound method if one exists which is a D-Bus
1293
865
property with the specified name and interface.
1295
for cls in self.__class__.__mro__:
1296
for name, value in inspect.getmembers(
1297
cls, self._is_dbus_thing("property")):
867
for cls in self.__class__.__mro__:
868
for name, value in (inspect.getmembers
870
self._is_dbus_thing("property"))):
1298
871
if (value._dbus_name == property_name
1299
872
and value._dbus_interface == interface_name):
1300
873
return value.__get__(self)
1302
875
# No such property
1303
raise DBusPropertyNotFound("{}:{}.{}".format(
1304
self.dbus_object_path, interface_name, property_name))
1307
def _get_all_interface_names(cls):
1308
"""Get a sequence of all interfaces supported by an object"""
1309
return (name for name in set(getattr(getattr(x, attr),
1310
"_dbus_interface", None)
1311
for x in (inspect.getmro(cls))
1313
if name is not None)
1315
@dbus.service.method(dbus.PROPERTIES_IFACE,
876
raise DBusPropertyNotFound(self.dbus_object_path + ":"
877
+ interface_name + "."
880
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1317
881
out_signature="v")
1318
882
def Get(self, interface_name, property_name):
1319
883
"""Standard D-Bus property Get() method, see D-Bus standard.
1447
1012
exc_info=error)
1448
1013
return xmlstring
1451
dbus.OBJECT_MANAGER_IFACE
1452
except AttributeError:
1453
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1455
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1456
"""A D-Bus object with an ObjectManager.
1458
Classes inheriting from this exposes the standard
1459
GetManagedObjects call and the InterfacesAdded and
1460
InterfacesRemoved signals on the standard
1461
"org.freedesktop.DBus.ObjectManager" interface.
1463
Note: No signals are sent automatically; they must be sent
1466
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1467
out_signature = "a{oa{sa{sv}}}")
1468
def GetManagedObjects(self):
1469
"""This function must be overridden"""
1470
raise NotImplementedError()
1472
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1473
signature = "oa{sa{sv}}")
1474
def InterfacesAdded(self, object_path, interfaces_and_properties):
1477
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1478
def InterfacesRemoved(self, object_path, interfaces):
1481
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1482
out_signature = "s",
1483
path_keyword = 'object_path',
1484
connection_keyword = 'connection')
1485
def Introspect(self, object_path, connection):
1486
"""Overloading of standard D-Bus method.
1488
Override return argument name of GetManagedObjects to be
1489
"objpath_interfaces_and_properties"
1491
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1495
document = xml.dom.minidom.parseString(xmlstring)
1497
for if_tag in document.getElementsByTagName("interface"):
1498
# Fix argument name for the GetManagedObjects method
1499
if (if_tag.getAttribute("name")
1500
== dbus.OBJECT_MANAGER_IFACE):
1501
for cn in if_tag.getElementsByTagName("method"):
1502
if (cn.getAttribute("name")
1503
== "GetManagedObjects"):
1504
for arg in cn.getElementsByTagName("arg"):
1505
if (arg.getAttribute("direction")
1509
"objpath_interfaces"
1511
xmlstring = document.toxml("utf-8")
1513
except (AttributeError, xml.dom.DOMException,
1514
xml.parsers.expat.ExpatError) as error:
1515
logger.error("Failed to override Introspection method",
1519
def datetime_to_dbus(dt, variant_level=0):
1016
def datetime_to_dbus (dt, variant_level=0):
1520
1017
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1522
1019
return dbus.String("", variant_level = variant_level)
1523
return dbus.String(dt.isoformat(), variant_level=variant_level)
1020
return dbus.String(dt.isoformat(),
1021
variant_level=variant_level)
1526
1024
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1557
1054
# Ignore non-D-Bus attributes, and D-Bus attributes
1558
1055
# with the wrong interface name
1559
1056
if (not hasattr(attribute, "_dbus_interface")
1560
or not attribute._dbus_interface.startswith(
1561
orig_interface_name)):
1057
or not attribute._dbus_interface
1058
.startswith(orig_interface_name)):
1563
1060
# Create an alternate D-Bus interface name based on
1564
1061
# the current name
1565
alt_interface = attribute._dbus_interface.replace(
1566
orig_interface_name, alt_interface_name)
1062
alt_interface = (attribute._dbus_interface
1063
.replace(orig_interface_name,
1064
alt_interface_name))
1567
1065
interface_names.add(alt_interface)
1568
1066
# Is this a D-Bus signal?
1569
1067
if getattr(attribute, "_dbus_is_signal", False):
1570
# Extract the original non-method undecorated
1571
# function by black magic
1572
if sys.version_info.major == 2:
1573
nonmethod_func = (dict(
1068
# Extract the original non-method function by
1070
nonmethod_func = (dict(
1574
1071
zip(attribute.func_code.co_freevars,
1575
attribute.__closure__))
1576
["func"].cell_contents)
1578
nonmethod_func = (dict(
1579
zip(attribute.__code__.co_freevars,
1580
attribute.__closure__))
1581
["func"].cell_contents)
1072
attribute.__closure__))["func"]
1582
1074
# Create a new, but exactly alike, function
1583
1075
# object, and decorate it to be a new D-Bus signal
1584
1076
# with the alternate D-Bus interface name
1585
new_function = copy_function(nonmethod_func)
1586
new_function = (dbus.service.signal(
1588
attribute._dbus_signature)(new_function))
1077
new_function = (dbus.service.signal
1079
attribute._dbus_signature)
1080
(types.FunctionType(
1081
nonmethod_func.func_code,
1082
nonmethod_func.func_globals,
1083
nonmethod_func.func_name,
1084
nonmethod_func.func_defaults,
1085
nonmethod_func.func_closure)))
1589
1086
# Copy annotations, if any
1591
new_function._dbus_annotations = dict(
1592
attribute._dbus_annotations)
1088
new_function._dbus_annotations = (
1089
dict(attribute._dbus_annotations))
1593
1090
except AttributeError:
1595
1092
# Define a creator of a function to call both the
1810
1295
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1811
1296
Client.__del__(self, *args, **kwargs)
1813
def checker_callback(self, source, condition,
1814
connection, command, *args, **kwargs):
1815
ret = Client.checker_callback(self, source, condition,
1816
connection, command, *args,
1818
exitstatus = self.last_checker_status
1298
def checker_callback(self, pid, condition, command,
1300
self.checker_callback_tag = None
1302
if os.WIFEXITED(condition):
1303
exitstatus = os.WEXITSTATUS(condition)
1820
1304
# Emit D-Bus signal
1821
1305
self.CheckerCompleted(dbus.Int16(exitstatus),
1822
# This is specific to GNU libC
1823
dbus.Int64(exitstatus << 8),
1306
dbus.Int64(condition),
1824
1307
dbus.String(command))
1826
1309
# Emit D-Bus signal
1827
1310
self.CheckerCompleted(dbus.Int16(-1),
1829
# This is specific to GNU libC
1831
| self.last_checker_signal),
1311
dbus.Int64(condition),
1832
1312
dbus.String(command))
1314
return Client.checker_callback(self, pid, condition, command,
1835
1317
def start_checker(self, *args, **kwargs):
1836
old_checker_pid = getattr(self.checker, "pid", None)
1318
old_checker = self.checker
1319
if self.checker is not None:
1320
old_checker_pid = self.checker.pid
1322
old_checker_pid = None
1837
1323
r = Client.start_checker(self, *args, **kwargs)
1838
1324
# Only if new checker process was started
1839
1325
if (self.checker is not None
1954
1441
self.approved_by_default = bool(value)
1956
1443
# ApprovalDelay - property
1957
@dbus_service_property(_interface,
1444
@dbus_service_property(_interface, signature="t",
1959
1445
access="readwrite")
1960
1446
def ApprovalDelay_dbus_property(self, value=None):
1961
1447
if value is None: # get
1962
return dbus.UInt64(self.approval_delay.total_seconds()
1448
return dbus.UInt64(self.approval_delay_milliseconds())
1964
1449
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1966
1451
# ApprovalDuration - property
1967
@dbus_service_property(_interface,
1452
@dbus_service_property(_interface, signature="t",
1969
1453
access="readwrite")
1970
1454
def ApprovalDuration_dbus_property(self, value=None):
1971
1455
if value is None: # get
1972
return dbus.UInt64(self.approval_duration.total_seconds()
1456
return dbus.UInt64(timedelta_to_milliseconds(
1457
self.approval_duration))
1974
1458
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1976
1460
# Name - property
1978
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1979
1461
@dbus_service_property(_interface, signature="s", access="read")
1980
1462
def Name_dbus_property(self):
1981
1463
return dbus.String(self.name)
1983
1465
# Fingerprint - property
1985
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1986
1466
@dbus_service_property(_interface, signature="s", access="read")
1987
1467
def Fingerprint_dbus_property(self):
1988
1468
return dbus.String(self.fingerprint)
1990
1470
# Host - property
1991
@dbus_service_property(_interface,
1471
@dbus_service_property(_interface, signature="s",
1993
1472
access="readwrite")
1994
1473
def Host_dbus_property(self, value=None):
1995
1474
if value is None: # get
1996
1475
return dbus.String(self.host)
1997
self.host = str(value)
1476
self.host = unicode(value)
1999
1478
# Created - property
2001
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2002
1479
@dbus_service_property(_interface, signature="s", access="read")
2003
1480
def Created_dbus_property(self):
2004
1481
return datetime_to_dbus(self.created)
2046
1522
return datetime_to_dbus(self.last_approval_request)
2048
1524
# Timeout - property
2049
@dbus_service_property(_interface,
1525
@dbus_service_property(_interface, signature="t",
2051
1526
access="readwrite")
2052
1527
def Timeout_dbus_property(self, value=None):
2053
1528
if value is None: # get
2054
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2055
old_timeout = self.timeout
1529
return dbus.UInt64(self.timeout_milliseconds())
2056
1530
self.timeout = datetime.timedelta(0, 0, 0, value)
2057
# Reschedule disabling
1531
# Reschedule timeout
2058
1532
if self.enabled:
2059
1533
now = datetime.datetime.utcnow()
2060
self.expires += self.timeout - old_timeout
2061
if self.expires <= now:
1534
time_to_die = timedelta_to_milliseconds(
1535
(self.last_checked_ok + self.timeout) - now)
1536
if time_to_die <= 0:
2062
1537
# The timeout has passed
1540
self.expires = (now +
1541
datetime.timedelta(milliseconds =
2065
1543
if (getattr(self, "disable_initiator_tag", None)
2068
GLib.source_remove(self.disable_initiator_tag)
2069
self.disable_initiator_tag = GLib.timeout_add(
2070
int((self.expires - now).total_seconds() * 1000),
1546
gobject.source_remove(self.disable_initiator_tag)
1547
self.disable_initiator_tag = (gobject.timeout_add
2073
1551
# ExtendedTimeout - property
2074
@dbus_service_property(_interface,
1552
@dbus_service_property(_interface, signature="t",
2076
1553
access="readwrite")
2077
1554
def ExtendedTimeout_dbus_property(self, value=None):
2078
1555
if value is None: # get
2079
return dbus.UInt64(self.extended_timeout.total_seconds()
1556
return dbus.UInt64(self.extended_timeout_milliseconds())
2081
1557
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2083
1559
# Interval - property
2084
@dbus_service_property(_interface,
1560
@dbus_service_property(_interface, signature="t",
2086
1561
access="readwrite")
2087
1562
def Interval_dbus_property(self, value=None):
2088
1563
if value is None: # get
2089
return dbus.UInt64(self.interval.total_seconds() * 1000)
1564
return dbus.UInt64(self.interval_milliseconds())
2090
1565
self.interval = datetime.timedelta(0, 0, 0, value)
2091
1566
if getattr(self, "checker_initiator_tag", None) is None:
2093
1568
if self.enabled:
2094
1569
# Reschedule checker run
2095
GLib.source_remove(self.checker_initiator_tag)
2096
self.checker_initiator_tag = GLib.timeout_add(
2097
value, self.start_checker)
2098
self.start_checker() # Start one now, too
1570
gobject.source_remove(self.checker_initiator_tag)
1571
self.checker_initiator_tag = (gobject.timeout_add
1572
(value, self.start_checker))
1573
self.start_checker() # Start one now, too
2100
1575
# Checker - property
2101
@dbus_service_property(_interface,
1576
@dbus_service_property(_interface, signature="s",
2103
1577
access="readwrite")
2104
1578
def Checker_dbus_property(self, value=None):
2105
1579
if value is None: # get
2106
1580
return dbus.String(self.checker_command)
2107
self.checker_command = str(value)
1581
self.checker_command = unicode(value)
2109
1583
# CheckerRunning - property
2110
@dbus_service_property(_interface,
1584
@dbus_service_property(_interface, signature="b",
2112
1585
access="readwrite")
2113
1586
def CheckerRunning_dbus_property(self, value=None):
2114
1587
if value is None: # get
2330
1813
def fingerprint(openpgp):
2331
1814
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2332
1815
# New GnuTLS "datum" with the OpenPGP public key
2333
datum = gnutls.datum_t(
2334
ctypes.cast(ctypes.c_char_p(openpgp),
2335
ctypes.POINTER(ctypes.c_ubyte)),
2336
ctypes.c_uint(len(openpgp)))
1816
datum = (gnutls.library.types
1817
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1820
ctypes.c_uint(len(openpgp))))
2337
1821
# New empty GnuTLS certificate
2338
crt = gnutls.openpgp_crt_t()
2339
gnutls.openpgp_crt_init(ctypes.byref(crt))
1822
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1823
(gnutls.library.functions
1824
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2340
1825
# Import the OpenPGP public key into the certificate
2341
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2342
gnutls.OPENPGP_FMT_RAW)
1826
(gnutls.library.functions
1827
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1828
gnutls.library.constants
1829
.GNUTLS_OPENPGP_FMT_RAW))
2343
1830
# Verify the self signature in the key
2344
1831
crtverify = ctypes.c_uint()
2345
gnutls.openpgp_crt_verify_self(crt, 0,
2346
ctypes.byref(crtverify))
1832
(gnutls.library.functions
1833
.gnutls_openpgp_crt_verify_self(crt, 0,
1834
ctypes.byref(crtverify)))
2347
1835
if crtverify.value != 0:
2348
gnutls.openpgp_crt_deinit(crt)
2349
raise gnutls.CertificateSecurityError("Verify failed")
1836
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1837
raise (gnutls.errors.CertificateSecurityError
2350
1839
# New buffer for the fingerprint
2351
1840
buf = ctypes.create_string_buffer(20)
2352
1841
buf_len = ctypes.c_size_t()
2353
1842
# Get the fingerprint from the certificate into the buffer
2354
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2355
ctypes.byref(buf_len))
1843
(gnutls.library.functions
1844
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1845
ctypes.byref(buf_len)))
2356
1846
# Deinit the certificate
2357
gnutls.openpgp_crt_deinit(crt)
1847
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2358
1848
# Convert the buffer to a Python bytestring
2359
1849
fpr = ctypes.string_at(buf, buf_len.value)
2360
1850
# Convert the bytestring to hexadecimal notation
2409
1898
interface: None or a network interface name (string)
2410
1899
use_ipv6: Boolean; to use IPv6 or not
2413
1901
def __init__(self, server_address, RequestHandlerClass,
2417
"""If socketfd is set, use that file descriptor instead of
2418
creating a new one with socket.socket().
1902
interface=None, use_ipv6=True):
2420
1903
self.interface = interface
2422
1905
self.address_family = socket.AF_INET6
2423
if socketfd is not None:
2424
# Save the file descriptor
2425
self.socketfd = socketfd
2426
# Save the original socket.socket() function
2427
self.socket_socket = socket.socket
2428
# To implement --socket, we monkey patch socket.socket.
2430
# (When socketserver.TCPServer is a new-style class, we
2431
# could make self.socket into a property instead of monkey
2432
# patching socket.socket.)
2434
# Create a one-time-only replacement for socket.socket()
2435
@functools.wraps(socket.socket)
2436
def socket_wrapper(*args, **kwargs):
2437
# Restore original function so subsequent calls are
2439
socket.socket = self.socket_socket
2440
del self.socket_socket
2441
# This time only, return a new socket object from the
2442
# saved file descriptor.
2443
return socket.fromfd(self.socketfd, *args, **kwargs)
2444
# Replace socket.socket() function with wrapper
2445
socket.socket = socket_wrapper
2446
# The socketserver.TCPServer.__init__ will call
2447
# socket.socket(), which might be our replacement,
2448
# socket_wrapper(), if socketfd was set.
2449
1906
socketserver.TCPServer.__init__(self, server_address,
2450
1907
RequestHandlerClass)
2452
1908
def server_bind(self):
2453
1909
"""This overrides the normal server_bind() function
2454
1910
to bind to an interface if one was specified, and also NOT to
2455
1911
bind to an address or port if they were not specified."""
2456
global SO_BINDTODEVICE
2457
1912
if self.interface is not None:
2458
1913
if SO_BINDTODEVICE is None:
2459
# Fall back to a hard-coded value which seems to be
2461
logger.warning("SO_BINDTODEVICE not found, trying 25")
2462
SO_BINDTODEVICE = 25
2464
self.socket.setsockopt(
2465
socket.SOL_SOCKET, SO_BINDTODEVICE,
2466
(self.interface + "\0").encode("utf-8"))
2467
except socket.error as error:
2468
if error.errno == errno.EPERM:
2469
logger.error("No permission to bind to"
2470
" interface %s", self.interface)
2471
elif error.errno == errno.ENOPROTOOPT:
2472
logger.error("SO_BINDTODEVICE not available;"
2473
" cannot bind to interface %s",
2475
elif error.errno == errno.ENODEV:
2476
logger.error("Interface %s does not exist,"
2477
" cannot bind", self.interface)
1914
logger.error("SO_BINDTODEVICE does not exist;"
1915
" cannot bind to interface %s",
1919
self.socket.setsockopt(socket.SOL_SOCKET,
1923
except socket.error as error:
1924
if error[0] == errno.EPERM:
1925
logger.error("No permission to"
1926
" bind to interface %s",
1928
elif error[0] == errno.ENOPROTOOPT:
1929
logger.error("SO_BINDTODEVICE not available;"
1930
" cannot bind to interface %s",
2480
1934
# Only bind(2) the socket if we really need to.
2481
1935
if self.server_address[0] or self.server_address[1]:
2482
1936
if not self.server_address[0]:
2483
1937
if self.address_family == socket.AF_INET6:
2484
1938
any_address = "::" # in6addr_any
2486
any_address = "0.0.0.0" # INADDR_ANY
1940
any_address = socket.INADDR_ANY
2487
1941
self.server_address = (any_address,
2488
1942
self.server_address[1])
2489
1943
elif not self.server_address[1]:
2490
self.server_address = (self.server_address[0], 0)
1944
self.server_address = (self.server_address[0],
2491
1946
# if self.interface:
2492
1947
# self.server_address = (self.server_address[0],
2615
def rfc3339_duration_to_delta(duration):
2616
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2618
>>> rfc3339_duration_to_delta("P7D")
2619
datetime.timedelta(7)
2620
>>> rfc3339_duration_to_delta("PT60S")
2621
datetime.timedelta(0, 60)
2622
>>> rfc3339_duration_to_delta("PT60M")
2623
datetime.timedelta(0, 3600)
2624
>>> rfc3339_duration_to_delta("PT24H")
2625
datetime.timedelta(1)
2626
>>> rfc3339_duration_to_delta("P1W")
2627
datetime.timedelta(7)
2628
>>> rfc3339_duration_to_delta("PT5M30S")
2629
datetime.timedelta(0, 330)
2630
>>> rfc3339_duration_to_delta("P1DT3M20S")
2631
datetime.timedelta(1, 200)
2634
# Parsing an RFC 3339 duration with regular expressions is not
2635
# possible - there would have to be multiple places for the same
2636
# values, like seconds. The current code, while more esoteric, is
2637
# cleaner without depending on a parsing library. If Python had a
2638
# built-in library for parsing we would use it, but we'd like to
2639
# avoid excessive use of external libraries.
2641
# New type for defining tokens, syntax, and semantics all-in-one
2642
Token = collections.namedtuple("Token", (
2643
"regexp", # To match token; if "value" is not None, must have
2644
# a "group" containing digits
2645
"value", # datetime.timedelta or None
2646
"followers")) # Tokens valid after this token
2647
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2648
# the "duration" ABNF definition in RFC 3339, Appendix A.
2649
token_end = Token(re.compile(r"$"), None, frozenset())
2650
token_second = Token(re.compile(r"(\d+)S"),
2651
datetime.timedelta(seconds=1),
2652
frozenset((token_end, )))
2653
token_minute = Token(re.compile(r"(\d+)M"),
2654
datetime.timedelta(minutes=1),
2655
frozenset((token_second, token_end)))
2656
token_hour = Token(re.compile(r"(\d+)H"),
2657
datetime.timedelta(hours=1),
2658
frozenset((token_minute, token_end)))
2659
token_time = Token(re.compile(r"T"),
2661
frozenset((token_hour, token_minute,
2663
token_day = Token(re.compile(r"(\d+)D"),
2664
datetime.timedelta(days=1),
2665
frozenset((token_time, token_end)))
2666
token_month = Token(re.compile(r"(\d+)M"),
2667
datetime.timedelta(weeks=4),
2668
frozenset((token_day, token_end)))
2669
token_year = Token(re.compile(r"(\d+)Y"),
2670
datetime.timedelta(weeks=52),
2671
frozenset((token_month, token_end)))
2672
token_week = Token(re.compile(r"(\d+)W"),
2673
datetime.timedelta(weeks=1),
2674
frozenset((token_end, )))
2675
token_duration = Token(re.compile(r"P"), None,
2676
frozenset((token_year, token_month,
2677
token_day, token_time,
2679
# Define starting values
2680
value = datetime.timedelta() # Value so far
2682
followers = frozenset((token_duration, )) # Following valid tokens
2683
s = duration # String left to parse
2684
# Loop until end token is found
2685
while found_token is not token_end:
2686
# Search for any currently valid tokens
2687
for token in followers:
2688
match = token.regexp.match(s)
2689
if match is not None:
2691
if token.value is not None:
2692
# Value found, parse digits
2693
factor = int(match.group(1), 10)
2694
# Add to value so far
2695
value += factor * token.value
2696
# Strip token from string
2697
s = token.regexp.sub("", s, 1)
2700
# Set valid next tokens
2701
followers = found_token.followers
2704
# No currently valid tokens were found
2705
raise ValueError("Invalid RFC 3339 duration: {!r}"
2711
2075
def string_to_delta(interval):
2712
2076
"""Parse a string and return a datetime.timedelta
2842
2192
"debug": "False",
2844
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2845
":+SIGN-DSA-SHA256",
2194
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2846
2195
"servicename": "Mandos",
2847
2196
"use_dbus": "True",
2848
2197
"use_ipv6": "True",
2849
2198
"debuglevel": "",
2850
2199
"restore": "True",
2852
"statedir": "/var/lib/mandos",
2853
"foreground": "False",
2200
"statedir": "/var/lib/mandos"
2857
2203
# Parse config file for server-global settings
2858
2204
server_config = configparser.SafeConfigParser(server_defaults)
2859
2205
del server_defaults
2860
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2206
server_config.read(os.path.join(options.configdir,
2861
2208
# Convert the SafeConfigParser object to a dict
2862
2209
server_settings = server_config.defaults()
2863
2210
# Use the appropriate methods on the non-string config options
2864
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2211
for option in ("debug", "use_dbus", "use_ipv6"):
2865
2212
server_settings[option] = server_config.getboolean("DEFAULT",
2867
2214
if server_settings["port"]:
2868
2215
server_settings["port"] = server_config.getint("DEFAULT",
2870
if server_settings["socket"]:
2871
server_settings["socket"] = server_config.getint("DEFAULT",
2873
# Later, stdin will, and stdout and stderr might, be dup'ed
2874
# over with an opened os.devnull. But we don't want this to
2875
# happen with a supplied network socket.
2876
if 0 <= server_settings["socket"] <= 2:
2877
server_settings["socket"] = os.dup(server_settings
2879
2217
del server_config
2881
2219
# Override the settings from the config file with command line
2882
2220
# options, if set.
2883
2221
for option in ("interface", "address", "port", "debug",
2884
"priority", "servicename", "configdir", "use_dbus",
2885
"use_ipv6", "debuglevel", "restore", "statedir",
2886
"socket", "foreground", "zeroconf"):
2222
"priority", "servicename", "configdir",
2223
"use_dbus", "use_ipv6", "debuglevel", "restore",
2887
2225
value = getattr(options, option)
2888
2226
if value is not None:
2889
2227
server_settings[option] = value
2891
2229
# Force all strings to be unicode
2892
2230
for option in server_settings.keys():
2893
if isinstance(server_settings[option], bytes):
2894
server_settings[option] = (server_settings[option]
2896
# Force all boolean options to be boolean
2897
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2898
"foreground", "zeroconf"):
2899
server_settings[option] = bool(server_settings[option])
2900
# Debug implies foreground
2901
if server_settings["debug"]:
2902
server_settings["foreground"] = True
2231
if type(server_settings[option]) is str:
2232
server_settings[option] = unicode(server_settings[option])
2903
2233
# Now we have our good server settings in "server_settings"
2905
2235
##################################################################
2907
if (not server_settings["zeroconf"]
2908
and not (server_settings["port"]
2909
or server_settings["socket"] != "")):
2910
parser.error("Needs port or socket to work without Zeroconf")
2912
2237
# For convenience
2913
2238
debug = server_settings["debug"]
2914
2239
debuglevel = server_settings["debuglevel"]
3011
2324
# Need to fork before connecting to D-Bus
3013
2326
# Close all input and output, do double fork, etc.
3016
# multiprocessing will use threads, so before we use GLib we need
3017
# to inform GLib that threads will be used.
2329
gobject.threads_init()
3020
2331
global main_loop
3021
2332
# From the Avahi example code
3022
2333
DBusGMainLoop(set_as_default=True)
3023
main_loop = GLib.MainLoop()
2334
main_loop = gobject.MainLoop()
3024
2335
bus = dbus.SystemBus()
3025
2336
# End of Avahi example code
3028
2339
bus_name = dbus.service.BusName("se.recompile.Mandos",
3031
old_bus_name = dbus.service.BusName(
3032
"se.bsnet.fukt.Mandos", bus,
3034
except dbus.exceptions.DBusException as e:
2340
bus, do_not_queue=True)
2341
old_bus_name = (dbus.service.BusName
2342
("se.bsnet.fukt.Mandos", bus,
2344
except dbus.exceptions.NameExistsException as e:
3035
2345
logger.error("Disabling D-Bus:", exc_info=e)
3036
2346
use_dbus = False
3037
2347
server_settings["use_dbus"] = False
3038
2348
tcp_server.use_dbus = False
3040
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3041
service = AvahiServiceToSyslog(
3042
name = server_settings["servicename"],
3043
servicetype = "_mandos._tcp",
3044
protocol = protocol,
3046
if server_settings["interface"]:
3047
service.interface = if_nametoindex(
3048
server_settings["interface"].encode("utf-8"))
2349
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2350
service = AvahiServiceToSyslog(name =
2351
server_settings["servicename"],
2352
servicetype = "_mandos._tcp",
2353
protocol = protocol, bus = bus)
2354
if server_settings["interface"]:
2355
service.interface = (if_nametoindex
2356
(str(server_settings["interface"])))
3050
2358
global multiprocessing_manager
3051
2359
multiprocessing_manager = multiprocessing.Manager()
3058
2366
old_client_settings = {}
3059
2367
clients_data = {}
3061
# This is used to redirect stdout and stderr for checker processes
3063
wnull = open(os.devnull, "w") # A writable /dev/null
3064
# Only used if server is running in foreground but not in debug
3066
if debug or not foreground:
3069
2369
# Get client data and settings from last running state.
3070
2370
if server_settings["restore"]:
3072
2372
with open(stored_state_path, "rb") as stored_state:
3073
if sys.version_info.major == 2:
3074
clients_data, old_client_settings = pickle.load(
3077
bytes_clients_data, bytes_old_client_settings = (
3078
pickle.load(stored_state, encoding = "bytes"))
3079
### Fix bytes to strings
3082
clients_data = { (key.decode("utf-8")
3083
if isinstance(key, bytes)
3086
bytes_clients_data.items() }
3087
del bytes_clients_data
3088
for key in clients_data:
3089
value = { (k.decode("utf-8")
3090
if isinstance(k, bytes) else k): v
3092
clients_data[key].items() }
3093
clients_data[key] = value
3095
value["client_structure"] = [
3097
if isinstance(s, bytes)
3099
value["client_structure"] ]
3101
for k in ("name", "host"):
3102
if isinstance(value[k], bytes):
3103
value[k] = value[k].decode("utf-8")
3104
## old_client_settings
3106
old_client_settings = {
3107
(key.decode("utf-8")
3108
if isinstance(key, bytes)
3111
bytes_old_client_settings.items() }
3112
del bytes_old_client_settings
3114
for value in old_client_settings.values():
3115
if isinstance(value["host"], bytes):
3116
value["host"] = (value["host"]
2373
clients_data, old_client_settings = (pickle.load
3118
2375
os.remove(stored_state_path)
3119
2376
except IOError as e:
3120
2377
if e.errno == errno.ENOENT:
3121
logger.warning("Could not load persistent state:"
3122
" {}".format(os.strerror(e.errno)))
2378
logger.warning("Could not load persistent state: {0}"
2379
.format(os.strerror(e.errno)))
3124
2381
logger.critical("Could not load persistent state:",
3127
2384
except EOFError as e:
3128
2385
logger.warning("Could not load persistent state: "
2386
"EOFError:", exc_info=e)
3132
2388
with PGPEngine() as pgp:
3133
for client_name, client in clients_data.items():
3134
# Skip removed clients
3135
if client_name not in client_settings:
2389
for client_name, client in clients_data.iteritems():
3138
2390
# Decide which value to use after restoring saved state.
3139
2391
# We have three different values: Old config file,
3140
2392
# new config file, and saved state.
3250
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3252
2505
@dbus.service.signal(_interface, signature="os")
3253
2506
def ClientRemoved(self, objpath, name):
3257
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3259
2510
@dbus.service.method(_interface, out_signature="ao")
3260
2511
def GetAllClients(self):
3262
return dbus.Array(c.dbus_object_path for c in
3263
tcp_server.clients.values())
2513
return dbus.Array(c.dbus_object_path
2515
tcp_server.clients.itervalues())
3265
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3267
2517
@dbus.service.method(_interface,
3268
2518
out_signature="a{oa{sv}}")
3269
2519
def GetAllClientsWithProperties(self):
3271
2521
return dbus.Dictionary(
3272
{ c.dbus_object_path: c.GetAll(
3273
"se.recompile.Mandos.Client")
3274
for c in tcp_server.clients.values() },
2522
((c.dbus_object_path, c.GetAll(""))
2523
for c in tcp_server.clients.itervalues()),
3275
2524
signature="oa{sv}")
3277
2526
@dbus.service.method(_interface, in_signature="o")
3278
2527
def RemoveClient(self, object_path):
3280
for c in tcp_server.clients.values():
2529
for c in tcp_server.clients.itervalues():
3281
2530
if c.dbus_object_path == object_path:
3282
2531
del tcp_server.clients[c.name]
3283
2532
c.remove_from_connection()
3284
# Don't signal the disabling
2533
# Don't signal anything except ClientRemoved
3285
2534
c.disable(quiet=True)
3286
# Emit D-Bus signal for removal
3287
self.client_removed_signal(c)
2536
self.ClientRemoved(object_path, c.name)
3289
2538
raise KeyError(object_path)
3293
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3294
out_signature = "a{oa{sa{sv}}}")
3295
def GetManagedObjects(self):
3297
return dbus.Dictionary(
3298
{ client.dbus_object_path:
3300
{ interface: client.GetAll(interface)
3302
client._get_all_interface_names()})
3303
for client in tcp_server.clients.values()})
3305
def client_added_signal(self, client):
3306
"""Send the new standard signal and the old signal"""
3308
# New standard signal
3309
self.InterfacesAdded(
3310
client.dbus_object_path,
3312
{ interface: client.GetAll(interface)
3314
client._get_all_interface_names()}))
3316
self.ClientAdded(client.dbus_object_path)
3318
def client_removed_signal(self, client):
3319
"""Send the new standard signal and the old signal"""
3321
# New standard signal
3322
self.InterfacesRemoved(
3323
client.dbus_object_path,
3324
client._get_all_interface_names())
3326
self.ClientRemoved(client.dbus_object_path,
3329
2542
mandos_dbus_service = MandosDBusService()
3331
# Save modules to variables to exempt the modules from being
3332
# unloaded before the function registered with atexit() is run.
3333
mp = multiprocessing
3336
2545
"Cleanup function; run on exit"
3340
mp.active_children()
2548
multiprocessing.active_children()
3342
2549
if not (tcp_server.clients or client_settings):