69
import cPickle as pickle
63
import cPickle as pickle
72
64
import multiprocessing
81
68
import dbus.service
82
from gi.repository import GLib
83
71
from dbus.mainloop.glib import DBusGMainLoop
86
74
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
78
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
94
79
except AttributeError:
96
# This is where SO_BINDTODEVICE was up to and including Python
98
81
from IN import SO_BINDTODEVICE
99
82
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:
118
stored_state_file = "clients.pickle"
120
logger = logging.getLogger()
124
if_nametoindex = ctypes.cdll.LoadLibrary(
125
ctypes.util.find_library("c")).if_nametoindex
126
except (OSError, AttributeError):
128
def if_nametoindex(interface):
129
"Get an interface index the hard way, i.e. using fcntl()"
130
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
131
with contextlib.closing(socket.socket()) as s:
132
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
133
struct.pack(b"16s16x", interface))
134
interface_index = struct.unpack("I", ifreq[16:20])[0]
135
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
def initlogger(debug, level=logging.WARNING):
155
"""init logger and add loglevel"""
158
syslogger = (logging.handlers.SysLogHandler(
159
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
syslogger.setFormatter(logging.Formatter
162
('Mandos [%(process)d]: %(levelname)s:'
164
logger.addHandler(syslogger)
167
console = logging.StreamHandler()
168
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
172
logger.addHandler(console)
173
logger.setLevel(level)
176
class PGPError(Exception):
177
"""Exception if encryption/decryption fails"""
181
class PGPEngine(object):
182
"""A simple class for OpenPGP symmetric encryption & decryption"""
185
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
188
output = subprocess.check_output(["gpgconf"])
189
for line in output.splitlines():
190
name, text, path = line.split(b":")
195
if e.errno != errno.ENOENT:
197
self.gnupgargs = ['--batch',
198
'--homedir', self.tempdir,
201
# Only GPG version 1 has the --no-use-agent option.
202
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
203
self.gnupgargs.append("--no-use-agent")
208
def __exit__(self, exc_type, exc_value, traceback):
216
if self.tempdir is not None:
217
# Delete contents of tempdir
218
for root, dirs, files in os.walk(self.tempdir,
220
for filename in files:
221
os.remove(os.path.join(root, filename))
223
os.rmdir(os.path.join(root, dirname))
225
os.rmdir(self.tempdir)
228
def password_encode(self, password):
229
# Passphrase can not be empty and can not contain newlines or
230
# 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"))
239
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:
257
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:
273
return decrypted_plaintext
276
# Pretend that we have an Avahi module
278
"""This isn't so much a class as it is a module-like namespace.
279
It is instantiated once, and simulates having an Avahi module."""
280
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
284
DBUS_NAME = "org.freedesktop.Avahi"
285
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
DBUS_PATH_SERVER = "/"
289
def string_array_to_txt_array(self, t):
290
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
291
for s in t), signature="ay")
292
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
293
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
294
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
295
SERVER_INVALID = 0 # avahi-common/defs.h
296
SERVER_REGISTERING = 1 # avahi-common/defs.h
297
SERVER_RUNNING = 2 # avahi-common/defs.h
298
SERVER_COLLISION = 3 # avahi-common/defs.h
299
SERVER_FAILURE = 4 # avahi-common/defs.h
83
SO_BINDTODEVICE = None
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
96
logger.addHandler(syslogger)
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
102
logger.addHandler(console)
303
104
class AvahiError(Exception):
304
105
def __init__(self, value, *args, **kwargs):
305
106
self.value = value
306
return super(AvahiError, self).__init__(value, *args,
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
310
111
class AvahiServiceError(AvahiError):
314
114
class AvahiGroupError(AvahiError):
318
118
class AvahiService(object):
319
119
"""An Avahi (Zeroconf) service.
322
122
interface: integer; avahi.IF_UNSPEC or an interface index.
323
123
Used to optionally bind to the specified interface.
324
124
name: string; Example: 'Mandos'
325
125
type: string; Example: '_mandos._tcp'.
326
See <https://www.iana.org/assignments/service-names-port-numbers>
126
See <http://www.dns-sd.org/ServiceTypes.html>
327
127
port: integer; what port to announce
328
128
TXT: list of strings; TXT record for the service
329
129
domain: string; Domain to publish on, default to .local if empty.
488
261
follow_name_owner_changes=True),
489
262
avahi.DBUS_INTERFACE_SERVER)
490
263
self.server.connect_to_signal("StateChanged",
491
self.server_state_changed)
264
self.server_state_changed)
492
265
self.server_state_changed(self.server.GetState())
495
class AvahiServiceToSyslog(AvahiService):
496
def rename(self, *args, **kwargs):
497
"""Add the new name to the syslog messages"""
498
ret = AvahiService.rename(self, *args, **kwargs)
499
syslogger.setFormatter(logging.Formatter(
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
505
# Pretend that we have a GnuTLS module
506
class GnuTLS(object):
507
"""This isn't so much a class as it is a module-like namespace.
508
It is instantiated once, and simulates having a GnuTLS module."""
510
library = ctypes.util.find_library("gnutls")
512
library = ctypes.util.find_library("gnutls-deb0")
513
_library = ctypes.cdll.LoadLibrary(library)
515
_need_version = b"3.3.0"
518
# Need to use class name "GnuTLS" here, since this method is
519
# called before the assignment to the "gnutls" global variable
521
if GnuTLS.check_version(self._need_version) is None:
522
raise GnuTLS.Error("Needs GnuTLS {} or later"
523
.format(self._need_version))
525
# Unless otherwise indicated, the constants and types below are
526
# all from the gnutls/gnutls.h C header file.
536
E_NO_CERTIFICATE_FOUND = -49
537
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
540
class session_int(ctypes.Structure):
542
session_t = ctypes.POINTER(session_int)
544
class certificate_credentials_st(ctypes.Structure):
546
certificate_credentials_t = ctypes.POINTER(
547
certificate_credentials_st)
548
certificate_type_t = ctypes.c_int
550
class datum_t(ctypes.Structure):
551
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
552
('size', ctypes.c_uint)]
554
class openpgp_crt_int(ctypes.Structure):
556
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
557
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
558
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
559
credentials_type_t = ctypes.c_int
560
transport_ptr_t = ctypes.c_void_p
561
close_request_t = ctypes.c_int
564
class Error(Exception):
565
# We need to use the class name "GnuTLS" here, since this
566
# exception might be raised from within GnuTLS.__init__,
567
# which is called before the assignment to the "gnutls"
568
# global variable has happened.
569
def __init__(self, message=None, code=None, args=()):
570
# Default usage is by a message string, but if a return
571
# code is passed, convert it to a string with
574
if message is None and code is not None:
575
message = GnuTLS.strerror(code)
576
return super(GnuTLS.Error, self).__init__(
579
class CertificateSecurityError(Error):
583
class Credentials(object):
585
self._c_object = gnutls.certificate_credentials_t()
586
gnutls.certificate_allocate_credentials(
587
ctypes.byref(self._c_object))
588
self.type = gnutls.CRD_CERTIFICATE
591
gnutls.certificate_free_credentials(self._c_object)
593
class ClientSession(object):
594
def __init__(self, socket, credentials=None):
595
self._c_object = gnutls.session_t()
596
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
597
gnutls.set_default_priority(self._c_object)
598
gnutls.transport_set_ptr(self._c_object, socket.fileno())
599
gnutls.handshake_set_private_extensions(self._c_object,
602
if credentials is None:
603
credentials = gnutls.Credentials()
604
gnutls.credentials_set(self._c_object, credentials.type,
605
ctypes.cast(credentials._c_object,
607
self.credentials = credentials
610
gnutls.deinit(self._c_object)
613
return gnutls.handshake(self._c_object)
615
def send(self, data):
619
data_len -= gnutls.record_send(self._c_object,
624
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
626
# Error handling functions
627
def _error_code(result):
628
"""A function to raise exceptions on errors, suitable
629
for the 'restype' attribute on ctypes functions"""
632
if result == gnutls.E_NO_CERTIFICATE_FOUND:
633
raise gnutls.CertificateSecurityError(code=result)
634
raise gnutls.Error(code=result)
636
def _retry_on_error(result, func, arguments):
637
"""A function to retry on some errors, suitable
638
for the 'errcheck' attribute on ctypes functions"""
640
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
641
return _error_code(result)
642
result = func(*arguments)
645
# Unless otherwise indicated, the function declarations below are
646
# all from the gnutls/gnutls.h C header file.
649
priority_set_direct = _library.gnutls_priority_set_direct
650
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
651
ctypes.POINTER(ctypes.c_char_p)]
652
priority_set_direct.restype = _error_code
654
init = _library.gnutls_init
655
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
656
init.restype = _error_code
658
set_default_priority = _library.gnutls_set_default_priority
659
set_default_priority.argtypes = [session_t]
660
set_default_priority.restype = _error_code
662
record_send = _library.gnutls_record_send
663
record_send.argtypes = [session_t, ctypes.c_void_p,
665
record_send.restype = ctypes.c_ssize_t
666
record_send.errcheck = _retry_on_error
668
certificate_allocate_credentials = (
669
_library.gnutls_certificate_allocate_credentials)
670
certificate_allocate_credentials.argtypes = [
671
ctypes.POINTER(certificate_credentials_t)]
672
certificate_allocate_credentials.restype = _error_code
674
certificate_free_credentials = (
675
_library.gnutls_certificate_free_credentials)
676
certificate_free_credentials.argtypes = [
677
certificate_credentials_t]
678
certificate_free_credentials.restype = None
680
handshake_set_private_extensions = (
681
_library.gnutls_handshake_set_private_extensions)
682
handshake_set_private_extensions.argtypes = [session_t,
684
handshake_set_private_extensions.restype = None
686
credentials_set = _library.gnutls_credentials_set
687
credentials_set.argtypes = [session_t, credentials_type_t,
689
credentials_set.restype = _error_code
691
strerror = _library.gnutls_strerror
692
strerror.argtypes = [ctypes.c_int]
693
strerror.restype = ctypes.c_char_p
695
certificate_type_get = _library.gnutls_certificate_type_get
696
certificate_type_get.argtypes = [session_t]
697
certificate_type_get.restype = _error_code
699
certificate_get_peers = _library.gnutls_certificate_get_peers
700
certificate_get_peers.argtypes = [session_t,
701
ctypes.POINTER(ctypes.c_uint)]
702
certificate_get_peers.restype = ctypes.POINTER(datum_t)
704
global_set_log_level = _library.gnutls_global_set_log_level
705
global_set_log_level.argtypes = [ctypes.c_int]
706
global_set_log_level.restype = None
708
global_set_log_function = _library.gnutls_global_set_log_function
709
global_set_log_function.argtypes = [log_func]
710
global_set_log_function.restype = None
712
deinit = _library.gnutls_deinit
713
deinit.argtypes = [session_t]
714
deinit.restype = None
716
handshake = _library.gnutls_handshake
717
handshake.argtypes = [session_t]
718
handshake.restype = _error_code
719
handshake.errcheck = _retry_on_error
721
transport_set_ptr = _library.gnutls_transport_set_ptr
722
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
723
transport_set_ptr.restype = None
725
bye = _library.gnutls_bye
726
bye.argtypes = [session_t, close_request_t]
727
bye.restype = _error_code
728
bye.errcheck = _retry_on_error
730
check_version = _library.gnutls_check_version
731
check_version.argtypes = [ctypes.c_char_p]
732
check_version.restype = ctypes.c_char_p
734
# All the function declarations below are from gnutls/openpgp.h
736
openpgp_crt_init = _library.gnutls_openpgp_crt_init
737
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
738
openpgp_crt_init.restype = _error_code
740
openpgp_crt_import = _library.gnutls_openpgp_crt_import
741
openpgp_crt_import.argtypes = [openpgp_crt_t,
742
ctypes.POINTER(datum_t),
744
openpgp_crt_import.restype = _error_code
746
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
747
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
748
ctypes.POINTER(ctypes.c_uint)]
749
openpgp_crt_verify_self.restype = _error_code
751
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
752
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
753
openpgp_crt_deinit.restype = None
755
openpgp_crt_get_fingerprint = (
756
_library.gnutls_openpgp_crt_get_fingerprint)
757
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
761
openpgp_crt_get_fingerprint.restype = _error_code
763
# Remove non-public functions
764
del _error_code, _retry_on_error
765
# Create the global "gnutls" object, simulating a module
769
def call_pipe(connection, # : multiprocessing.Connection
770
func, *args, **kwargs):
771
"""This function is meant to be called by multiprocessing.Process
773
This function runs func(*args, **kwargs), and writes the resulting
774
return value on the provided multiprocessing.Connection.
776
connection.send(func(*args, **kwargs))
268
def _timedelta_to_milliseconds(td):
269
"Convert a datetime.timedelta() to milliseconds"
270
return ((td.days * 24 * 60 * 60 * 1000)
271
+ (td.seconds * 1000)
272
+ (td.microseconds // 1000))
780
274
class Client(object):
781
275
"""A representation of a client host served by this server.
784
approved: bool(); 'None' if not yet approved/disapproved
278
_approved: bool(); 'None' if not yet approved/disapproved
785
279
approval_delay: datetime.timedelta(); Time to wait for approval
786
280
approval_duration: datetime.timedelta(); Duration of one approval
787
281
checker: subprocess.Popen(); a running checker process used
788
282
to see if the client lives.
789
283
'None' if no process is running.
790
checker_callback_tag: a GLib event source tag, or None
284
checker_callback_tag: a gobject event source tag, or None
791
285
checker_command: string; External command which is run to check
792
286
if client lives. %() expansions are done at
793
287
runtime with vars(self) as dict, so that for
794
288
instance %(name)s can be used in the command.
795
checker_initiator_tag: a GLib event source tag, or None
289
checker_initiator_tag: a gobject event source tag, or None
796
290
created: datetime.datetime(); (UTC) object creation
797
client_structure: Object describing what attributes a client has
798
and is used for storing the client at exit
799
291
current_checker_command: string; current running checker_command
800
disable_initiator_tag: a GLib event source tag, or None
292
disable_hook: If set, called by disable() as disable_hook(self)
293
disable_initiator_tag: a gobject event source tag, or None
802
295
fingerprint: string (40 or 32 hexadecimal digits); used to
803
296
uniquely identify the client
805
298
interval: datetime.timedelta(); How often to start a new checker
806
299
last_approval_request: datetime.datetime(); (UTC) or None
807
300
last_checked_ok: datetime.datetime(); (UTC) or None
808
last_checker_status: integer between 0 and 255 reflecting exit
809
status of last checker. -1 reflects crashed
810
checker, -2 means no checker completed yet.
811
last_checker_signal: The signal which killed the last checker, if
812
last_checker_status is -1
813
last_enabled: datetime.datetime(); (UTC) or None
301
last_enabled: datetime.datetime(); (UTC)
814
302
name: string; from the config file, used in log messages and
815
303
D-Bus identifiers
816
304
secret: bytestring; sent verbatim (over TLS) to client
817
305
timeout: datetime.timedelta(); How long from last_checked_ok
818
306
until this client is disabled
819
extended_timeout: extra long timeout when secret has been sent
307
extended_timeout: extra long timeout when password has been sent
820
308
runtime_expansions: Allowed attributes for runtime expansion.
821
309
expires: datetime.datetime(); time (UTC) when a client will be
822
310
disabled, or None
823
server_settings: The server_settings dict from main()
826
313
runtime_expansions = ("approval_delay", "approval_duration",
827
"created", "enabled", "expires",
828
"fingerprint", "host", "interval",
829
"last_approval_request", "last_checked_ok",
314
"created", "enabled", "fingerprint",
315
"host", "interval", "last_checked_ok",
830
316
"last_enabled", "name", "timeout")
833
"extended_timeout": "PT15M",
835
"checker": "fping -q -- %%(host)s",
837
"approval_delay": "PT0S",
838
"approval_duration": "PT1S",
839
"approved_by_default": "True",
844
def config_parser(config):
845
"""Construct a new dict of client settings of this form:
846
{ client_name: {setting_name: value, ...}, ...}
847
with exceptions for any special settings as defined above.
848
NOTE: Must be a pure function. Must return the same result
849
value given the same arguments.
852
for client_name in config.sections():
853
section = dict(config.items(client_name))
854
client = settings[client_name] = {}
856
client["host"] = section["host"]
857
# Reformat values from string types to Python types
858
client["approved_by_default"] = config.getboolean(
859
client_name, "approved_by_default")
860
client["enabled"] = config.getboolean(client_name,
863
# Uppercase and remove spaces from fingerprint for later
864
# comparison purposes with return value from the
865
# fingerprint() function
866
client["fingerprint"] = (section["fingerprint"].upper()
868
if "secret" in section:
869
client["secret"] = codecs.decode(section["secret"]
872
elif "secfile" in section:
873
with open(os.path.expanduser(os.path.expandvars
874
(section["secfile"])),
876
client["secret"] = secfile.read()
878
raise TypeError("No secret or secfile for section {}"
880
client["timeout"] = string_to_delta(section["timeout"])
881
client["extended_timeout"] = string_to_delta(
882
section["extended_timeout"])
883
client["interval"] = string_to_delta(section["interval"])
884
client["approval_delay"] = string_to_delta(
885
section["approval_delay"])
886
client["approval_duration"] = string_to_delta(
887
section["approval_duration"])
888
client["checker_command"] = section["checker"]
889
client["last_approval_request"] = None
890
client["last_checked_ok"] = None
891
client["last_checker_status"] = -2
895
def __init__(self, settings, name=None, server_settings=None):
318
def timeout_milliseconds(self):
319
"Return the 'timeout' attribute in milliseconds"
320
return _timedelta_to_milliseconds(self.timeout)
322
def extended_timeout_milliseconds(self):
323
"Return the 'extended_timeout' attribute in milliseconds"
324
return _timedelta_to_milliseconds(self.extended_timeout)
326
def interval_milliseconds(self):
327
"Return the 'interval' attribute in milliseconds"
328
return _timedelta_to_milliseconds(self.interval)
330
def approval_delay_milliseconds(self):
331
return _timedelta_to_milliseconds(self.approval_delay)
333
def __init__(self, name = None, disable_hook=None, config=None):
334
"""Note: the 'checker' key in 'config' sets the
335
'checker_command' attribute and *not* the 'checker'
897
if server_settings is None:
899
self.server_settings = server_settings
900
# adding all client settings
901
for setting, value in settings.items():
902
setattr(self, setting, value)
905
if not hasattr(self, "last_enabled"):
906
self.last_enabled = datetime.datetime.utcnow()
907
if not hasattr(self, "expires"):
908
self.expires = (datetime.datetime.utcnow()
911
self.last_enabled = None
914
340
logger.debug("Creating client %r", self.name)
341
# Uppercase and remove spaces from fingerprint for later
342
# comparison purposes with return value from the fingerprint()
344
self.fingerprint = (config["fingerprint"].upper()
915
346
logger.debug(" Fingerprint: %s", self.fingerprint)
916
self.created = settings.get("created",
917
datetime.datetime.utcnow())
919
# attributes specific for this server instance
347
if "secret" in config:
348
self.secret = config["secret"].decode("base64")
349
elif "secfile" in config:
350
with open(os.path.expanduser(os.path.expandvars
351
(config["secfile"])),
353
self.secret = secfile.read()
355
raise TypeError("No secret or secfile for client %s"
357
self.host = config.get("host", "")
358
self.created = datetime.datetime.utcnow()
360
self.last_approval_request = None
361
self.last_enabled = None
362
self.last_checked_ok = None
363
self.timeout = string_to_delta(config["timeout"])
364
self.extended_timeout = string_to_delta(config["extended_timeout"])
365
self.interval = string_to_delta(config["interval"])
366
self.disable_hook = disable_hook
920
367
self.checker = None
921
368
self.checker_initiator_tag = None
922
369
self.disable_initiator_tag = None
923
371
self.checker_callback_tag = None
372
self.checker_command = config["checker"]
924
373
self.current_checker_command = None
374
self.last_connect = None
375
self._approved = None
376
self.approved_by_default = config.get("approved_by_default",
926
378
self.approvals_pending = 0
927
self.changedstate = multiprocessing_manager.Condition(
928
multiprocessing_manager.Lock())
929
self.client_structure = [attr
930
for attr in self.__dict__.keys()
931
if not attr.startswith("_")]
932
self.client_structure.append("client_structure")
934
for name, t in inspect.getmembers(
935
type(self), lambda obj: isinstance(obj, property)):
936
if not name.startswith("_"):
937
self.client_structure.append(name)
939
# Send notice to process children that client state has changed
379
self.approval_delay = string_to_delta(
380
config["approval_delay"])
381
self.approval_duration = string_to_delta(
382
config["approval_duration"])
383
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
940
385
def send_changedstate(self):
941
with self.changedstate:
942
self.changedstate.notify_all()
386
self.changedstate.acquire()
387
self.changedstate.notify_all()
388
self.changedstate.release()
944
390
def enable(self):
945
391
"""Start this client's checker and timeout hooks"""
946
392
if getattr(self, "enabled", False):
947
393
# Already enabled
395
self.send_changedstate()
396
# Schedule a new checker to be started an 'interval' from now,
397
# and every interval from then on.
398
self.checker_initiator_tag = (gobject.timeout_add
399
(self.interval_milliseconds(),
401
# Schedule a disable() when 'timeout' has passed
949
402
self.expires = datetime.datetime.utcnow() + self.timeout
403
self.disable_initiator_tag = (gobject.timeout_add
404
(self.timeout_milliseconds(),
950
406
self.enabled = True
951
407
self.last_enabled = datetime.datetime.utcnow()
953
self.send_changedstate()
408
# Also start a new checker *right now*.
955
411
def disable(self, quiet=True):
956
412
"""Disable this client."""
957
413
if not getattr(self, "enabled", False):
416
self.send_changedstate()
960
418
logger.info("Disabling client %s", self.name)
961
if getattr(self, "disable_initiator_tag", None) is not None:
962
GLib.source_remove(self.disable_initiator_tag)
419
if getattr(self, "disable_initiator_tag", False):
420
gobject.source_remove(self.disable_initiator_tag)
963
421
self.disable_initiator_tag = None
964
422
self.expires = None
965
if getattr(self, "checker_initiator_tag", None) is not None:
966
GLib.source_remove(self.checker_initiator_tag)
423
if getattr(self, "checker_initiator_tag", False):
424
gobject.source_remove(self.checker_initiator_tag)
967
425
self.checker_initiator_tag = None
968
426
self.stop_checker()
427
if self.disable_hook:
428
self.disable_hook(self)
969
429
self.enabled = False
971
self.send_changedstate()
972
# Do not run this again if called by a GLib.timeout_add
430
# Do not run this again if called by a gobject.timeout_add
975
433
def __del__(self):
434
self.disable_hook = None
978
def init_checker(self):
979
# Schedule a new checker to be started an 'interval' from now,
980
# and every interval from then on.
981
if self.checker_initiator_tag is not None:
982
GLib.source_remove(self.checker_initiator_tag)
983
self.checker_initiator_tag = GLib.timeout_add(
984
int(self.interval.total_seconds() * 1000),
986
# Schedule a disable() when 'timeout' has passed
987
if self.disable_initiator_tag is not None:
988
GLib.source_remove(self.disable_initiator_tag)
989
self.disable_initiator_tag = GLib.timeout_add(
990
int(self.timeout.total_seconds() * 1000), self.disable)
991
# Also start a new checker *right now*.
994
def checker_callback(self, source, condition, connection,
437
def checker_callback(self, pid, condition, command):
996
438
"""The checker has completed, so take appropriate actions."""
997
439
self.checker_callback_tag = None
998
440
self.checker = None
999
# Read return code from connection (see call_pipe)
1000
returncode = connection.recv()
1004
self.last_checker_status = returncode
1005
self.last_checker_signal = None
1006
if self.last_checker_status == 0:
441
if os.WIFEXITED(condition):
442
exitstatus = os.WEXITSTATUS(condition)
1007
444
logger.info("Checker for %(name)s succeeded",
1009
446
self.checked_ok()
1011
logger.info("Checker for %(name)s failed", vars(self))
448
logger.info("Checker for %(name)s failed",
1013
self.last_checker_status = -1
1014
self.last_checker_signal = -returncode
1015
451
logger.warning("Checker for %(name)s crashed?",
1019
def checked_ok(self):
1020
"""Assert that the client has been seen, alive and well."""
1021
self.last_checked_ok = datetime.datetime.utcnow()
1022
self.last_checker_status = 0
1023
self.last_checker_signal = None
1026
def bump_timeout(self, timeout=None):
1027
"""Bump up the timeout for this client."""
454
def checked_ok(self, timeout=None):
455
"""Bump up the timeout for this client.
457
This should only be called when the client has been seen,
1028
460
if timeout is None:
1029
461
timeout = self.timeout
1030
if self.disable_initiator_tag is not None:
1031
GLib.source_remove(self.disable_initiator_tag)
1032
self.disable_initiator_tag = None
1033
if getattr(self, "enabled", False):
1034
self.disable_initiator_tag = GLib.timeout_add(
1035
int(timeout.total_seconds() * 1000), self.disable)
1036
self.expires = datetime.datetime.utcnow() + timeout
462
self.last_checked_ok = datetime.datetime.utcnow()
463
gobject.source_remove(self.disable_initiator_tag)
464
self.expires = datetime.datetime.utcnow() + timeout
465
self.disable_initiator_tag = (gobject.timeout_add
466
(_timedelta_to_milliseconds(timeout),
1038
469
def need_approval(self):
1039
470
self.last_approval_request = datetime.datetime.utcnow()
1041
472
def start_checker(self):
1042
473
"""Start a new checker subprocess if one is not running.
1044
475
If a checker already exists, leave it running and do
1046
477
# The reason for not killing a running checker is that if we
1047
# did that, and if a checker (for some reason) started running
1048
# slowly and taking more than 'interval' time, then the client
1049
# would inevitably timeout, since no checker would get a
1050
# chance to run to completion. If we instead leave running
478
# did that, then if a checker (for some reason) started
479
# running slowly and taking more than 'interval' time, the
480
# client would inevitably timeout, since no checker would get
481
# a chance to run to completion. If we instead leave running
1051
482
# checkers alone, the checker would have to take more time
1052
483
# than 'timeout' for the client to be disabled, which is as it
1055
if self.checker is not None and not self.checker.is_alive():
1056
logger.warning("Checker was not alive; joining")
486
# If a checker exists, make sure it is not a zombie
488
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
489
except (AttributeError, OSError) as error:
490
if (isinstance(error, OSError)
491
and error.errno != errno.ECHILD):
495
logger.warning("Checker was a zombie")
496
gobject.source_remove(self.checker_callback_tag)
497
self.checker_callback(pid, status,
498
self.current_checker_command)
1059
499
# Start a new checker if needed
1060
500
if self.checker is None:
1061
# Escape attributes for the shell
1063
attr: re.escape(str(getattr(self, attr)))
1064
for attr in self.runtime_expansions}
1066
command = self.checker_command % escaped_attrs
1067
except TypeError as error:
1068
logger.error('Could not format string "%s"',
1069
self.checker_command,
1071
return True # Try again later
502
# In case checker_command has exactly one % operator
503
command = self.checker_command % self.host
505
# Escape attributes for the shell
506
escaped_attrs = dict(
508
re.escape(unicode(str(getattr(self, attr, "")),
512
self.runtime_expansions)
515
command = self.checker_command % escaped_attrs
516
except TypeError as error:
517
logger.error('Could not format string "%s":'
518
' %s', self.checker_command, error)
519
return True # Try again later
1072
520
self.current_checker_command = command
1073
logger.info("Starting checker %r for %s", command,
1075
# We don't need to redirect stdout and stderr, since
1076
# in normal mode, that is already done by daemon(),
1077
# and in debug mode we don't want to. (Stdin is
1078
# always replaced by /dev/null.)
1079
# The exception is when not debugging but nevertheless
1080
# running in the foreground; use the previously
1082
popen_args = {"close_fds": True,
1085
if (not self.server_settings["debug"]
1086
and self.server_settings["foreground"]):
1087
popen_args.update({"stdout": wnull,
1089
pipe = multiprocessing.Pipe(duplex=False)
1090
self.checker = multiprocessing.Process(
1092
args=(pipe[1], subprocess.call, command),
1094
self.checker.start()
1095
self.checker_callback_tag = GLib.io_add_watch(
1096
pipe[0].fileno(), GLib.IO_IN,
1097
self.checker_callback, pipe[0], command)
1098
# Re-run this periodically if run by GLib.timeout_add
522
logger.info("Starting checker %r for %s",
524
# We don't need to redirect stdout and stderr, since
525
# in normal mode, that is already done by daemon(),
526
# and in debug mode we don't want to. (Stdin is
527
# always replaced by /dev/null.)
528
self.checker = subprocess.Popen(command,
531
self.checker_callback_tag = (gobject.child_watch_add
533
self.checker_callback,
535
# The checker may have completed before the gobject
536
# watch was added. Check for this.
537
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
539
gobject.source_remove(self.checker_callback_tag)
540
self.checker_callback(pid, status, command)
541
except OSError as error:
542
logger.error("Failed to start subprocess: %s",
544
# Re-run this periodically if run by gobject.timeout_add
1101
547
def stop_checker(self):
1102
548
"""Force the checker process, if any, to stop."""
1103
549
if self.checker_callback_tag:
1104
GLib.source_remove(self.checker_callback_tag)
550
gobject.source_remove(self.checker_callback_tag)
1105
551
self.checker_callback_tag = None
1106
552
if getattr(self, "checker", None) is None:
1108
554
logger.debug("Stopping checker for %(name)s", vars(self))
1109
self.checker.terminate()
556
os.kill(self.checker.pid, signal.SIGTERM)
558
#if self.checker.poll() is None:
559
# os.kill(self.checker.pid, signal.SIGKILL)
560
except OSError as error:
561
if error.errno != errno.ESRCH: # No such process
1110
563
self.checker = None
1113
def dbus_service_property(dbus_interface,
566
def dbus_service_property(dbus_interface, signature="v",
567
access="readwrite", byte_arrays=False):
1117
568
"""Decorators for marking methods of a DBusObjectWithProperties to
1118
569
become properties on the D-Bus.
1120
571
The decorated method will be called with no arguments by "Get"
1121
572
and with one argument by "Set".
1123
574
The parameters, where they are supported, are the same as
1124
575
dbus.service.method, except there is only "signature", since the
1125
576
type from Get() and the type sent to Set() is the same.
1208
class DBusObjectWithAnnotations(dbus.service.Object):
1209
"""A D-Bus object with annotations.
1211
Classes inheriting from this can use the dbus_annotations
1212
decorator to add annotations to methods or signals.
1216
def _is_dbus_thing(thing):
1217
"""Returns a function testing if an attribute is a D-Bus thing
1219
If called like _is_dbus_thing("method") it returns a function
1220
suitable for use as predicate to inspect.getmembers().
1222
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1225
def _get_all_dbus_things(self, thing):
1226
"""Returns a generator of (name, attribute) pairs
1228
return ((getattr(athing.__get__(self), "_dbus_name", name),
1229
athing.__get__(self))
1230
for cls in self.__class__.__mro__
1232
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1234
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1236
path_keyword='object_path',
1237
connection_keyword='connection')
1238
def Introspect(self, object_path, connection):
1239
"""Overloading of standard D-Bus method.
1241
Inserts annotation tags on methods and signals.
1243
xmlstring = dbus.service.Object.Introspect(self, object_path,
1246
document = xml.dom.minidom.parseString(xmlstring)
1248
for if_tag in document.getElementsByTagName("interface"):
1249
# Add annotation tags
1250
for typ in ("method", "signal"):
1251
for tag in if_tag.getElementsByTagName(typ):
1253
for name, prop in (self.
1254
_get_all_dbus_things(typ)):
1255
if (name == tag.getAttribute("name")
1256
and prop._dbus_interface
1257
== if_tag.getAttribute("name")):
1258
annots.update(getattr(
1259
prop, "_dbus_annotations", {}))
1260
for name, value in annots.items():
1261
ann_tag = document.createElement(
1263
ann_tag.setAttribute("name", name)
1264
ann_tag.setAttribute("value", value)
1265
tag.appendChild(ann_tag)
1266
# Add interface annotation tags
1267
for annotation, value in dict(
1268
itertools.chain.from_iterable(
1269
annotations().items()
1270
for name, annotations
1271
in self._get_all_dbus_things("interface")
1272
if name == if_tag.getAttribute("name")
1274
ann_tag = document.createElement("annotation")
1275
ann_tag.setAttribute("name", annotation)
1276
ann_tag.setAttribute("value", value)
1277
if_tag.appendChild(ann_tag)
1278
# Fix argument name for the Introspect method itself
1279
if (if_tag.getAttribute("name")
1280
== dbus.INTROSPECTABLE_IFACE):
1281
for cn in if_tag.getElementsByTagName("method"):
1282
if cn.getAttribute("name") == "Introspect":
1283
for arg in cn.getElementsByTagName("arg"):
1284
if (arg.getAttribute("direction")
1286
arg.setAttribute("name",
1288
xmlstring = document.toxml("utf-8")
1290
except (AttributeError, xml.dom.DOMException,
1291
xml.parsers.expat.ExpatError) as error:
1292
logger.error("Failed to override Introspection method",
1297
class DBusObjectWithProperties(DBusObjectWithAnnotations):
615
class DBusObjectWithProperties(dbus.service.Object):
1298
616
"""A D-Bus object with properties.
1300
618
Classes inheriting from this can use the dbus_service_property
1301
619
decorator to expose methods as D-Bus properties. It exposes the
1302
620
standard Get(), Set(), and GetAll() methods on the D-Bus.
624
def _is_dbus_property(obj):
625
return getattr(obj, "_dbus_is_property", False)
627
def _get_all_dbus_properties(self):
628
"""Returns a generator of (name, attribute) pairs
630
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
631
for cls in self.__class__.__mro__
632
for name, prop in inspect.getmembers(cls, self._is_dbus_property))
1305
634
def _get_dbus_property(self, interface_name, property_name):
1306
635
"""Returns a bound method if one exists which is a D-Bus
1307
636
property with the specified name and interface.
1309
for cls in self.__class__.__mro__:
1310
for name, value in inspect.getmembers(
1311
cls, self._is_dbus_thing("property")):
1312
if (value._dbus_name == property_name
1313
and value._dbus_interface == interface_name):
638
for cls in self.__class__.__mro__:
639
for name, value in inspect.getmembers(cls, self._is_dbus_property):
640
if value._dbus_name == property_name and value._dbus_interface == interface_name:
1314
641
return value.__get__(self)
1316
643
# No such property
1317
raise DBusPropertyNotFound("{}:{}.{}".format(
1318
self.dbus_object_path, interface_name, property_name))
1321
def _get_all_interface_names(cls):
1322
"""Get a sequence of all interfaces supported by an object"""
1323
return (name for name in set(getattr(getattr(x, attr),
1324
"_dbus_interface", None)
1325
for x in (inspect.getmro(cls))
1327
if name is not None)
1329
@dbus.service.method(dbus.PROPERTIES_IFACE,
644
raise DBusPropertyNotFound(self.dbus_object_path + ":"
645
+ interface_name + "."
648
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1331
649
out_signature="v")
1332
650
def Get(self, interface_name, property_name):
1333
651
"""Standard D-Bus property Get() method, see D-Bus standard.
1458
743
except (AttributeError, xml.dom.DOMException,
1459
744
xml.parsers.expat.ExpatError) as error:
1460
745
logger.error("Failed to override Introspection method",
1465
dbus.OBJECT_MANAGER_IFACE
1466
except AttributeError:
1467
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1470
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1471
"""A D-Bus object with an ObjectManager.
1473
Classes inheriting from this exposes the standard
1474
GetManagedObjects call and the InterfacesAdded and
1475
InterfacesRemoved signals on the standard
1476
"org.freedesktop.DBus.ObjectManager" interface.
1478
Note: No signals are sent automatically; they must be sent
1481
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1482
out_signature="a{oa{sa{sv}}}")
1483
def GetManagedObjects(self):
1484
"""This function must be overridden"""
1485
raise NotImplementedError()
1487
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1488
signature="oa{sa{sv}}")
1489
def InterfacesAdded(self, object_path, interfaces_and_properties):
1492
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1493
def InterfacesRemoved(self, object_path, interfaces):
1496
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1498
path_keyword='object_path',
1499
connection_keyword='connection')
1500
def Introspect(self, object_path, connection):
1501
"""Overloading of standard D-Bus method.
1503
Override return argument name of GetManagedObjects to be
1504
"objpath_interfaces_and_properties"
1506
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1510
document = xml.dom.minidom.parseString(xmlstring)
1512
for if_tag in document.getElementsByTagName("interface"):
1513
# Fix argument name for the GetManagedObjects method
1514
if (if_tag.getAttribute("name")
1515
== dbus.OBJECT_MANAGER_IFACE):
1516
for cn in if_tag.getElementsByTagName("method"):
1517
if (cn.getAttribute("name")
1518
== "GetManagedObjects"):
1519
for arg in cn.getElementsByTagName("arg"):
1520
if (arg.getAttribute("direction")
1524
"objpath_interfaces"
1526
xmlstring = document.toxml("utf-8")
1528
except (AttributeError, xml.dom.DOMException,
1529
xml.parsers.expat.ExpatError) as error:
1530
logger.error("Failed to override Introspection method",
1535
def datetime_to_dbus(dt, variant_level=0):
750
def datetime_to_dbus (dt, variant_level=0):
1536
751
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1538
return dbus.String("", variant_level=variant_level)
1539
return dbus.String(dt.isoformat(), variant_level=variant_level)
1542
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1543
"""A class decorator; applied to a subclass of
1544
dbus.service.Object, it will add alternate D-Bus attributes with
1545
interface names according to the "alt_interface_names" mapping.
1548
@alternate_dbus_interfaces({"org.example.Interface":
1549
"net.example.AlternateInterface"})
1550
class SampleDBusObject(dbus.service.Object):
1551
@dbus.service.method("org.example.Interface")
1552
def SampleDBusMethod():
1555
The above "SampleDBusMethod" on "SampleDBusObject" will be
1556
reachable via two interfaces: "org.example.Interface" and
1557
"net.example.AlternateInterface", the latter of which will have
1558
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1559
"true", unless "deprecate" is passed with a False value.
1561
This works for methods and signals, and also for D-Bus properties
1562
(from DBusObjectWithProperties) and interfaces (from the
1563
dbus_interface_annotations decorator).
753
return dbus.String("", variant_level = variant_level)
754
return dbus.String(dt.isoformat(),
755
variant_level=variant_level)
757
class AlternateDBusNamesMetaclass(DBusObjectWithProperties.__metaclass__):
758
"""Applied to an empty subclass of a D-Bus object, this metaclass
759
will add additional D-Bus attributes matching a certain pattern.
1567
for orig_interface_name, alt_interface_name in (
1568
alt_interface_names.items()):
1570
interface_names = set()
1571
# Go though all attributes of the class
1572
for attrname, attribute in inspect.getmembers(cls):
761
def __new__(mcs, name, bases, attr):
762
# Go through all the base classes which could have D-Bus
763
# methods, signals, or properties in them
764
for base in (b for b in bases
765
if issubclass(b, dbus.service.Object)):
766
# Go though all attributes of the base class
767
for attrname, attribute in inspect.getmembers(base):
1573
768
# Ignore non-D-Bus attributes, and D-Bus attributes
1574
769
# with the wrong interface name
1575
770
if (not hasattr(attribute, "_dbus_interface")
1576
or not attribute._dbus_interface.startswith(
1577
orig_interface_name)):
771
or not attribute._dbus_interface
772
.startswith("se.recompile.Mandos")):
1579
774
# Create an alternate D-Bus interface name based on
1580
775
# the current name
1581
alt_interface = attribute._dbus_interface.replace(
1582
orig_interface_name, alt_interface_name)
1583
interface_names.add(alt_interface)
776
alt_interface = (attribute._dbus_interface
777
.replace("se.recompile.Mandos",
778
"se.bsnet.fukt.Mandos"))
1584
779
# Is this a D-Bus signal?
1585
780
if getattr(attribute, "_dbus_is_signal", False):
1586
# Extract the original non-method undecorated
1587
# function by black magic
1588
if sys.version_info.major == 2:
1589
nonmethod_func = (dict(
781
# Extract the original non-method function by
783
nonmethod_func = (dict(
1590
784
zip(attribute.func_code.co_freevars,
1591
attribute.__closure__))
1592
["func"].cell_contents)
1594
nonmethod_func = (dict(
1595
zip(attribute.__code__.co_freevars,
1596
attribute.__closure__))
1597
["func"].cell_contents)
785
attribute.__closure__))["func"]
1598
787
# Create a new, but exactly alike, function
1599
788
# object, and decorate it to be a new D-Bus signal
1600
789
# with the alternate D-Bus interface name
1601
new_function = copy_function(nonmethod_func)
1602
new_function = (dbus.service.signal(
1604
attribute._dbus_signature)(new_function))
1605
# Copy annotations, if any
1607
new_function._dbus_annotations = dict(
1608
attribute._dbus_annotations)
1609
except AttributeError:
790
new_function = (dbus.service.signal
792
attribute._dbus_signature)
794
nonmethod_func.func_code,
795
nonmethod_func.func_globals,
796
nonmethod_func.func_name,
797
nonmethod_func.func_defaults,
798
nonmethod_func.func_closure)))
1612
799
# Define a creator of a function to call both the
1613
# original and alternate functions, so both the
1614
# original and alternate signals gets sent when
1615
# the function is called
800
# old and new functions, so both the old and new
801
# signals gets sent when the function is called
1616
802
def fixscope(func1, func2):
1617
803
"""This function is a scope container to pass
1618
804
func1 and func2 to the "call_both" function
1619
805
outside of its arguments"""
1621
@functools.wraps(func2)
1622
806
def call_both(*args, **kwargs):
1623
807
"""This function will emit two D-Bus
1624
808
signals by calling func1 and func2"""
1625
809
func1(*args, **kwargs)
1626
810
func2(*args, **kwargs)
1627
# Make wrapper function look like a D-Bus
1629
for name, attr in inspect.getmembers(func2):
1630
if name.startswith("_dbus_"):
1631
setattr(call_both, name, attr)
1633
811
return call_both
1634
812
# Create the "call_both" function and add it to
1636
attr[attrname] = fixscope(attribute, new_function)
814
attr[attrname] = fixscope(attribute,
1637
816
# Is this a D-Bus method?
1638
817
elif getattr(attribute, "_dbus_is_method", False):
1639
818
# Create a new, but exactly alike, function
1640
819
# object. Decorate it to be a new D-Bus method
1641
820
# with the alternate D-Bus interface name. Add it
1644
dbus.service.method(
1646
attribute._dbus_in_signature,
1647
attribute._dbus_out_signature)
1648
(copy_function(attribute)))
1649
# Copy annotations, if any
1651
attr[attrname]._dbus_annotations = dict(
1652
attribute._dbus_annotations)
1653
except AttributeError:
822
attr[attrname] = (dbus.service.method
824
attribute._dbus_in_signature,
825
attribute._dbus_out_signature)
827
(attribute.func_code,
828
attribute.func_globals,
830
attribute.func_defaults,
831
attribute.func_closure)))
1655
832
# Is this a D-Bus property?
1656
833
elif getattr(attribute, "_dbus_is_property", False):
1657
834
# Create a new, but exactly alike, function
1658
835
# object, and decorate it to be a new D-Bus
1659
836
# property with the alternate D-Bus interface
1660
837
# name. Add it to the class.
1661
attr[attrname] = (dbus_service_property(
1662
alt_interface, attribute._dbus_signature,
1663
attribute._dbus_access,
1664
attribute._dbus_get_args_options
1666
(copy_function(attribute)))
1667
# Copy annotations, if any
1669
attr[attrname]._dbus_annotations = dict(
1670
attribute._dbus_annotations)
1671
except AttributeError:
1673
# Is this a D-Bus interface?
1674
elif getattr(attribute, "_dbus_is_interface", False):
1675
# Create a new, but exactly alike, function
1676
# object. Decorate it to be a new D-Bus interface
1677
# with the alternate D-Bus interface name. Add it
1680
dbus_interface_annotations(alt_interface)
1681
(copy_function(attribute)))
1683
# Deprecate all alternate interfaces
1684
iname = "_AlternateDBusNames_interface_annotation{}"
1685
for interface_name in interface_names:
1687
@dbus_interface_annotations(interface_name)
1689
return {"org.freedesktop.DBus.Deprecated":
1691
# Find an unused name
1692
for aname in (iname.format(i)
1693
for i in itertools.count()):
1694
if aname not in attr:
1698
# Replace the class with a new subclass of it with
1699
# methods, signals, etc. as created above.
1700
if sys.version_info.major == 2:
1701
cls = type(b"{}Alternate".format(cls.__name__),
1704
cls = type("{}Alternate".format(cls.__name__),
1711
@alternate_dbus_interfaces({"se.recompile.Mandos":
1712
"se.bsnet.fukt.Mandos"})
838
attr[attrname] = (dbus_service_property
840
attribute._dbus_signature,
841
attribute._dbus_access,
843
._dbus_get_args_options
846
(attribute.func_code,
847
attribute.func_globals,
849
attribute.func_defaults,
850
attribute.func_closure)))
851
return type.__new__(mcs, name, bases, attr)
1713
853
class ClientDBus(Client, DBusObjectWithProperties):
1714
854
"""A Client class using D-Bus
1717
857
dbus_object_path: dbus.ObjectPath
1718
858
bus: dbus.SystemBus()
1721
861
runtime_expansions = (Client.runtime_expansions
1722
+ ("dbus_object_path", ))
1724
_interface = "se.recompile.Mandos.Client"
862
+ ("dbus_object_path",))
1726
864
# dbus.service.Object doesn't use super(), so we can't either.
1728
def __init__(self, bus=None, *args, **kwargs):
866
def __init__(self, bus = None, *args, **kwargs):
867
self._approvals_pending = 0
1730
869
Client.__init__(self, *args, **kwargs)
1731
870
# Only now, when this client is initialized, can it show up on
1733
client_object_name = str(self.name).translate(
872
client_object_name = unicode(self.name).translate(
1734
873
{ord("."): ord("_"),
1735
874
ord("-"): ord("_")})
1736
self.dbus_object_path = dbus.ObjectPath(
1737
"/clients/" + client_object_name)
875
self.dbus_object_path = (dbus.ObjectPath
876
("/clients/" + client_object_name))
1738
877
DBusObjectWithProperties.__init__(self, self.bus,
1739
878
self.dbus_object_path)
1741
def notifychangeproperty(transform_func, dbus_name,
1742
type_func=lambda x: x,
1744
invalidate_only=False,
1745
_interface=_interface):
880
def notifychangeproperty(transform_func,
881
dbus_name, type_func=lambda x: x,
1746
883
""" Modify a variable so that it's a property which announces
1747
884
its changes to DBus.
1749
transform_fun: Function that takes a value and a variant_level
1750
and transforms it to a D-Bus type.
886
transform_fun: Function that takes a value and transforms it
1751
888
dbus_name: D-Bus name of the variable
1752
889
type_func: Function that transform the value before sending it
1753
890
to the D-Bus. Default: no transform
1754
891
variant_level: D-Bus variant level. Default: 1
1756
attrname = "_{}".format(dbus_name)
1758
894
def setter(self, value):
895
old_value = real_value[0]
896
real_value[0] = value
1759
897
if hasattr(self, "dbus_object_path"):
1760
if (not hasattr(self, attrname) or
1761
type_func(getattr(self, attrname, None))
1762
!= type_func(value)):
1764
self.PropertiesChanged(
1765
_interface, dbus.Dictionary(),
1766
dbus.Array((dbus_name, )))
1768
dbus_value = transform_func(
1770
variant_level=variant_level)
1771
self.PropertyChanged(dbus.String(dbus_name),
1773
self.PropertiesChanged(
1775
dbus.Dictionary({dbus.String(dbus_name):
1778
setattr(self, attrname, value)
1780
return property(lambda self: getattr(self, attrname), setter)
898
if type_func(old_value) != type_func(real_value[0]):
899
dbus_value = transform_func(type_func(real_value[0]),
901
self.PropertyChanged(dbus.String(dbus_name),
904
return property(lambda self: real_value[0], setter)
1782
907
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1783
908
approvals_pending = notifychangeproperty(dbus.Boolean,
1784
909
"ApprovalPending",
1786
911
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1787
912
last_enabled = notifychangeproperty(datetime_to_dbus,
1789
checker = notifychangeproperty(
1790
dbus.Boolean, "CheckerRunning",
1791
type_func=lambda checker: checker is not None)
914
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
915
type_func = lambda checker: checker is not None)
1792
916
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1793
917
"LastCheckedOK")
1794
last_checker_status = notifychangeproperty(dbus.Int16,
1795
"LastCheckerStatus")
1796
last_approval_request = notifychangeproperty(
1797
datetime_to_dbus, "LastApprovalRequest")
918
last_approval_request = notifychangeproperty(datetime_to_dbus,
919
"LastApprovalRequest")
1798
920
approved_by_default = notifychangeproperty(dbus.Boolean,
1799
921
"ApprovedByDefault")
1800
approval_delay = notifychangeproperty(
1801
dbus.UInt64, "ApprovalDelay",
1802
type_func=lambda td: td.total_seconds() * 1000)
1803
approval_duration = notifychangeproperty(
1804
dbus.UInt64, "ApprovalDuration",
1805
type_func=lambda td: td.total_seconds() * 1000)
922
approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
923
type_func = _timedelta_to_milliseconds)
924
approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
925
type_func = _timedelta_to_milliseconds)
1806
926
host = notifychangeproperty(dbus.String, "Host")
1807
timeout = notifychangeproperty(
1808
dbus.UInt64, "Timeout",
1809
type_func=lambda td: td.total_seconds() * 1000)
1810
extended_timeout = notifychangeproperty(
1811
dbus.UInt64, "ExtendedTimeout",
1812
type_func=lambda td: td.total_seconds() * 1000)
1813
interval = notifychangeproperty(
1814
dbus.UInt64, "Interval",
1815
type_func=lambda td: td.total_seconds() * 1000)
927
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
928
type_func = _timedelta_to_milliseconds)
929
extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
930
type_func = _timedelta_to_milliseconds)
931
interval = notifychangeproperty(dbus.UInt16, "Interval",
932
type_func = _timedelta_to_milliseconds)
1816
933
checker_command = notifychangeproperty(dbus.String, "Checker")
1817
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1818
invalidate_only=True)
1820
935
del notifychangeproperty
1822
937
def __del__(self, *args, **kwargs):
1824
939
self.remove_from_connection()
2163
1246
self._pipe = child_pipe
2164
1247
self._pipe.send(('init', fpr, address))
2165
1248
if not self._pipe.recv():
2168
1251
def __getattribute__(self, name):
1252
if(name == '_pipe'):
2170
1253
return super(ProxyClient, self).__getattribute__(name)
2171
1254
self._pipe.send(('getattr', name))
2172
1255
data = self._pipe.recv()
2173
1256
if data[0] == 'data':
2175
1258
if data[0] == 'function':
2177
1259
def func(*args, **kwargs):
2178
1260
self._pipe.send(('funcall', name, args, kwargs))
2179
1261
return self._pipe.recv()[1]
2183
1264
def __setattr__(self, name, value):
1265
if(name == '_pipe'):
2185
1266
return super(ProxyClient, self).__setattr__(name, value)
2186
1267
self._pipe.send(('setattr', name, value))
1269
class ClientDBusTransitional(ClientDBus):
1270
__metaclass__ = AlternateDBusNamesMetaclass
2189
1272
class ClientHandler(socketserver.BaseRequestHandler, object):
2190
1273
"""A class to handle client connections.
2192
1275
Instantiated once for each connection to handle it.
2193
1276
Note: This will run in its own forked process."""
2195
1278
def handle(self):
2196
1279
with contextlib.closing(self.server.child_pipe) as child_pipe:
2197
1280
logger.info("TCP connection from: %s",
2198
str(self.client_address))
1281
unicode(self.client_address))
2199
1282
logger.debug("Pipe FD: %d",
2200
1283
self.server.child_pipe.fileno())
2202
session = gnutls.ClientSession(self.request)
2204
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2205
# "+AES-256-CBC", "+SHA1",
2206
# "+COMP-NULL", "+CTYPE-OPENPGP",
1285
session = (gnutls.connection
1286
.ClientSession(self.request,
1288
.X509Credentials()))
1290
# Note: gnutls.connection.X509Credentials is really a
1291
# generic GnuTLS certificate credentials object so long as
1292
# no X.509 keys are added to it. Therefore, we can use it
1293
# here despite using OpenPGP certificates.
1295
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1296
# "+AES-256-CBC", "+SHA1",
1297
# "+COMP-NULL", "+CTYPE-OPENPGP",
2208
1299
# Use a fallback default, since this MUST be set.
2209
1300
priority = self.server.gnutls_priority
2210
1301
if priority is None:
2211
1302
priority = "NORMAL"
2212
gnutls.priority_set_direct(session._c_object,
2213
priority.encode("utf-8"),
1303
(gnutls.library.functions
1304
.gnutls_priority_set_direct(session._c_object,
2216
1307
# Start communication using the Mandos protocol
2217
1308
# Get protocol number
2218
1309
line = self.request.makefile().readline()
2219
1310
logger.debug("Protocol version: %r", line)
2221
1312
if int(line.strip().split()[0]) > 1:
2222
raise RuntimeError(line)
2223
1314
except (ValueError, IndexError, RuntimeError) as error:
2224
1315
logger.error("Unknown protocol version: %s", error)
2227
1318
# Start GnuTLS connection
2229
1320
session.handshake()
2230
except gnutls.Error as error:
1321
except gnutls.errors.GNUTLSError as error:
2231
1322
logger.warning("Handshake failed: %s", error)
2232
1323
# Do not run session.bye() here: the session is not
2233
1324
# established. Just abandon the request.
2235
1326
logger.debug("Handshake succeeded")
2237
1328
approval_required = False
2240
fpr = self.fingerprint(
2241
self.peer_certificate(session))
2242
except (TypeError, gnutls.Error) as error:
1331
fpr = self.fingerprint(self.peer_certificate
1334
gnutls.errors.GNUTLSError) as error:
2243
1335
logger.warning("Bad certificate: %s", error)
2245
1337
logger.debug("Fingerprint: %s", fpr)
2248
1340
client = ProxyClient(child_pipe, fpr,
2249
1341
self.client_address)
2250
1342
except KeyError:
2253
1345
if client.approval_delay:
2254
1346
delay = client.approval_delay
2255
1347
client.approvals_pending += 1
2256
1348
approval_required = True
2259
1351
if not client.enabled:
2260
1352
logger.info("Client %s is disabled",
2262
1354
if self.server.use_dbus:
2263
1355
# Emit D-Bus signal
2264
client.Rejected("Disabled")
1356
client.Rejected("Disabled")
2267
if client.approved or not client.approval_delay:
2268
# We are approved or approval is disabled
1359
if client._approved or not client.approval_delay:
1360
#We are approved or approval is disabled
2270
elif client.approved is None:
1362
elif client._approved is None:
2271
1363
logger.info("Client %s needs approval",
2273
1365
if self.server.use_dbus:
2274
1366
# Emit D-Bus signal
2275
1367
client.NeedApproval(
2276
client.approval_delay.total_seconds()
2277
* 1000, client.approved_by_default)
1368
client.approval_delay_milliseconds(),
1369
client.approved_by_default)
2279
1371
logger.warning("Client %s was not approved",
2304
1397
delay -= time2 - time
2307
session.send(client.secret)
2308
except gnutls.Error as error:
2309
logger.warning("gnutls send failed",
1400
while sent_size < len(client.secret):
1402
sent = session.send(client.secret[sent_size:])
1403
except gnutls.errors.GNUTLSError as error:
1404
logger.warning("gnutls send failed")
1406
logger.debug("Sent: %d, remaining: %d",
1407
sent, len(client.secret)
1408
- (sent_size + sent))
2313
1411
logger.info("Sending secret to %s", client.name)
2314
# bump the timeout using extended_timeout
2315
client.bump_timeout(client.extended_timeout)
1412
# bump the timeout as if seen
1413
client.checked_ok(client.extended_timeout)
2316
1414
if self.server.use_dbus:
2317
1415
# Emit D-Bus signal
2318
1416
client.GotSecret()
2321
1419
if approval_required:
2322
1420
client.approvals_pending -= 1
2325
except gnutls.Error as error:
2326
logger.warning("GnuTLS bye failed",
1423
except gnutls.errors.GNUTLSError as error:
1424
logger.warning("GnuTLS bye failed")
2330
1427
def peer_certificate(session):
2331
1428
"Return the peer's OpenPGP certificate as a bytestring"
2332
1429
# If not an OpenPGP certificate...
2333
if (gnutls.certificate_type_get(session._c_object)
2334
!= gnutls.CRT_OPENPGP):
2335
# ...return invalid data
1430
if (gnutls.library.functions
1431
.gnutls_certificate_type_get(session._c_object)
1432
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1433
# ...do the normal thing
1434
return session.peer_certificate
2337
1435
list_size = ctypes.c_uint(1)
2338
cert_list = (gnutls.certificate_get_peers
1436
cert_list = (gnutls.library.functions
1437
.gnutls_certificate_get_peers
2339
1438
(session._c_object, ctypes.byref(list_size)))
2340
1439
if not bool(cert_list) and list_size.value != 0:
2341
raise gnutls.Error("error getting peer certificate")
1440
raise gnutls.errors.GNUTLSError("error getting peer"
2342
1442
if list_size.value == 0:
2344
1444
cert = cert_list[0]
2345
1445
return ctypes.string_at(cert.data, cert.size)
2348
1448
def fingerprint(openpgp):
2349
1449
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2350
1450
# New GnuTLS "datum" with the OpenPGP public key
2351
datum = gnutls.datum_t(
2352
ctypes.cast(ctypes.c_char_p(openpgp),
2353
ctypes.POINTER(ctypes.c_ubyte)),
2354
ctypes.c_uint(len(openpgp)))
1451
datum = (gnutls.library.types
1452
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1455
ctypes.c_uint(len(openpgp))))
2355
1456
# New empty GnuTLS certificate
2356
crt = gnutls.openpgp_crt_t()
2357
gnutls.openpgp_crt_init(ctypes.byref(crt))
1457
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1458
(gnutls.library.functions
1459
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2358
1460
# Import the OpenPGP public key into the certificate
2359
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2360
gnutls.OPENPGP_FMT_RAW)
1461
(gnutls.library.functions
1462
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1463
gnutls.library.constants
1464
.GNUTLS_OPENPGP_FMT_RAW))
2361
1465
# Verify the self signature in the key
2362
1466
crtverify = ctypes.c_uint()
2363
gnutls.openpgp_crt_verify_self(crt, 0,
2364
ctypes.byref(crtverify))
1467
(gnutls.library.functions
1468
.gnutls_openpgp_crt_verify_self(crt, 0,
1469
ctypes.byref(crtverify)))
2365
1470
if crtverify.value != 0:
2366
gnutls.openpgp_crt_deinit(crt)
2367
raise gnutls.CertificateSecurityError("Verify failed")
1471
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1472
raise (gnutls.errors.CertificateSecurityError
2368
1474
# New buffer for the fingerprint
2369
1475
buf = ctypes.create_string_buffer(20)
2370
1476
buf_len = ctypes.c_size_t()
2371
1477
# Get the fingerprint from the certificate into the buffer
2372
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2373
ctypes.byref(buf_len))
1478
(gnutls.library.functions
1479
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1480
ctypes.byref(buf_len)))
2374
1481
# Deinit the certificate
2375
gnutls.openpgp_crt_deinit(crt)
1482
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2376
1483
# Convert the buffer to a Python bytestring
2377
1484
fpr = ctypes.string_at(buf, buf_len.value)
2378
1485
# Convert the bytestring to hexadecimal notation
2379
hex_fpr = binascii.hexlify(fpr).upper()
1486
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2383
1490
class MultiprocessingMixIn(object):
2384
1491
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2386
1492
def sub_process_main(self, request, address):
2388
1494
self.finish_request(request, address)
2390
1496
self.handle_error(request, address)
2391
1497
self.close_request(request)
2393
1499
def process_request(self, request, address):
2394
1500
"""Start a new process to process the request."""
2395
proc = multiprocessing.Process(target=self.sub_process_main,
2396
args=(request, address))
1501
multiprocessing.Process(target = self.sub_process_main,
1502
args = (request, address)).start()
2401
1505
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2402
1506
""" adds a pipe to the MixIn """
2404
1507
def process_request(self, request, client_address):
2405
1508
"""Overrides and wraps the original process_request().
2407
1510
This function creates a new pipe in self.pipe
2409
1512
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2411
proc = MultiprocessingMixIn.process_request(self, request,
1514
super(MultiprocessingMixInWithPipe,
1515
self).process_request(request, client_address)
2413
1516
self.child_pipe.close()
2414
self.add_pipe(parent_pipe, proc)
2416
def add_pipe(self, parent_pipe, proc):
1517
self.add_pipe(parent_pipe)
1519
def add_pipe(self, parent_pipe):
2417
1520
"""Dummy function; override as necessary"""
2418
raise NotImplementedError()
1521
raise NotImplementedError
2421
1524
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2422
1525
socketserver.TCPServer, object):
2423
1526
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2426
1529
enabled: Boolean; whether this server is activated yet
2427
1530
interface: None or a network interface name (string)
2428
1531
use_ipv6: Boolean; to use IPv6 or not
2431
1533
def __init__(self, server_address, RequestHandlerClass,
2435
"""If socketfd is set, use that file descriptor instead of
2436
creating a new one with socket.socket().
1534
interface=None, use_ipv6=True):
2438
1535
self.interface = interface
2440
1537
self.address_family = socket.AF_INET6
2441
if socketfd is not None:
2442
# Save the file descriptor
2443
self.socketfd = socketfd
2444
# Save the original socket.socket() function
2445
self.socket_socket = socket.socket
2447
# To implement --socket, we monkey patch socket.socket.
2449
# (When socketserver.TCPServer is a new-style class, we
2450
# could make self.socket into a property instead of monkey
2451
# patching socket.socket.)
2453
# Create a one-time-only replacement for socket.socket()
2454
@functools.wraps(socket.socket)
2455
def socket_wrapper(*args, **kwargs):
2456
# Restore original function so subsequent calls are
2458
socket.socket = self.socket_socket
2459
del self.socket_socket
2460
# This time only, return a new socket object from the
2461
# saved file descriptor.
2462
return socket.fromfd(self.socketfd, *args, **kwargs)
2463
# Replace socket.socket() function with wrapper
2464
socket.socket = socket_wrapper
2465
# The socketserver.TCPServer.__init__ will call
2466
# socket.socket(), which might be our replacement,
2467
# socket_wrapper(), if socketfd was set.
2468
1538
socketserver.TCPServer.__init__(self, server_address,
2469
1539
RequestHandlerClass)
2471
1540
def server_bind(self):
2472
1541
"""This overrides the normal server_bind() function
2473
1542
to bind to an interface if one was specified, and also NOT to
2474
1543
bind to an address or port if they were not specified."""
2475
global SO_BINDTODEVICE
2476
1544
if self.interface is not None:
2477
1545
if SO_BINDTODEVICE is None:
2478
# Fall back to a hard-coded value which seems to be
2480
logger.warning("SO_BINDTODEVICE not found, trying 25")
2481
SO_BINDTODEVICE = 25
2483
self.socket.setsockopt(
2484
socket.SOL_SOCKET, SO_BINDTODEVICE,
2485
(self.interface + "\0").encode("utf-8"))
2486
except socket.error as error:
2487
if error.errno == errno.EPERM:
2488
logger.error("No permission to bind to"
2489
" interface %s", self.interface)
2490
elif error.errno == errno.ENOPROTOOPT:
2491
logger.error("SO_BINDTODEVICE not available;"
2492
" cannot bind to interface %s",
2494
elif error.errno == errno.ENODEV:
2495
logger.error("Interface %s does not exist,"
2496
" cannot bind", self.interface)
1546
logger.error("SO_BINDTODEVICE does not exist;"
1547
" cannot bind to interface %s",
1551
self.socket.setsockopt(socket.SOL_SOCKET,
1555
except socket.error as error:
1556
if error[0] == errno.EPERM:
1557
logger.error("No permission to"
1558
" bind to interface %s",
1560
elif error[0] == errno.ENOPROTOOPT:
1561
logger.error("SO_BINDTODEVICE not available;"
1562
" cannot bind to interface %s",
2499
1566
# Only bind(2) the socket if we really need to.
2500
1567
if self.server_address[0] or self.server_address[1]:
2501
1568
if not self.server_address[0]:
2502
1569
if self.address_family == socket.AF_INET6:
2503
any_address = "::" # in6addr_any
1570
any_address = "::" # in6addr_any
2505
any_address = "0.0.0.0" # INADDR_ANY
1572
any_address = socket.INADDR_ANY
2506
1573
self.server_address = (any_address,
2507
1574
self.server_address[1])
2508
1575
elif not self.server_address[1]:
2509
self.server_address = (self.server_address[0], 0)
1576
self.server_address = (self.server_address[0],
2510
1578
# if self.interface:
2511
1579
# self.server_address = (self.server_address[0],
2589
1656
"dress: %s", fpr, address)
2590
1657
if self.use_dbus:
2591
1658
# Emit D-Bus signal
2592
mandos_dbus_service.ClientNotFound(fpr,
1659
mandos_dbus_service.ClientNotFound(fpr, address[0])
2594
1660
parent_pipe.send(False)
2598
parent_pipe.fileno(),
2599
GLib.IO_IN | GLib.IO_HUP,
2600
functools.partial(self.handle_ipc,
2601
parent_pipe=parent_pipe,
2603
client_object=client))
1663
gobject.io_add_watch(parent_pipe.fileno(),
1664
gobject.IO_IN | gobject.IO_HUP,
1665
functools.partial(self.handle_ipc,
1666
parent_pipe = parent_pipe,
1667
client_object = client))
2604
1668
parent_pipe.send(True)
2605
# remove the old hook in favor of the new above hook on
1669
# remove the old hook in favor of the new above hook on same fileno
2608
1671
if command == 'funcall':
2609
1672
funcname = request[1]
2610
1673
args = request[2]
2611
1674
kwargs = request[3]
2613
parent_pipe.send(('data', getattr(client_object,
1676
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2617
1678
if command == 'getattr':
2618
1679
attrname = request[1]
2619
if isinstance(client_object.__getattribute__(attrname),
2620
collections.Callable):
2621
parent_pipe.send(('function', ))
1680
if callable(client_object.__getattribute__(attrname)):
1681
parent_pipe.send(('function',))
2624
'data', client_object.__getattribute__(attrname)))
1683
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2626
1685
if command == 'setattr':
2627
1686
attrname = request[1]
2628
1687
value = request[2]
2629
1688
setattr(client_object, attrname, value)
2634
def rfc3339_duration_to_delta(duration):
2635
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2637
>>> rfc3339_duration_to_delta("P7D")
2638
datetime.timedelta(7)
2639
>>> rfc3339_duration_to_delta("PT60S")
2640
datetime.timedelta(0, 60)
2641
>>> rfc3339_duration_to_delta("PT60M")
2642
datetime.timedelta(0, 3600)
2643
>>> rfc3339_duration_to_delta("PT24H")
2644
datetime.timedelta(1)
2645
>>> rfc3339_duration_to_delta("P1W")
2646
datetime.timedelta(7)
2647
>>> rfc3339_duration_to_delta("PT5M30S")
2648
datetime.timedelta(0, 330)
2649
>>> rfc3339_duration_to_delta("P1DT3M20S")
2650
datetime.timedelta(1, 200)
2653
# Parsing an RFC 3339 duration with regular expressions is not
2654
# possible - there would have to be multiple places for the same
2655
# values, like seconds. The current code, while more esoteric, is
2656
# cleaner without depending on a parsing library. If Python had a
2657
# built-in library for parsing we would use it, but we'd like to
2658
# avoid excessive use of external libraries.
2660
# New type for defining tokens, syntax, and semantics all-in-one
2661
Token = collections.namedtuple("Token", (
2662
"regexp", # To match token; if "value" is not None, must have
2663
# a "group" containing digits
2664
"value", # datetime.timedelta or None
2665
"followers")) # Tokens valid after this token
2666
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2667
# the "duration" ABNF definition in RFC 3339, Appendix A.
2668
token_end = Token(re.compile(r"$"), None, frozenset())
2669
token_second = Token(re.compile(r"(\d+)S"),
2670
datetime.timedelta(seconds=1),
2671
frozenset((token_end, )))
2672
token_minute = Token(re.compile(r"(\d+)M"),
2673
datetime.timedelta(minutes=1),
2674
frozenset((token_second, token_end)))
2675
token_hour = Token(re.compile(r"(\d+)H"),
2676
datetime.timedelta(hours=1),
2677
frozenset((token_minute, token_end)))
2678
token_time = Token(re.compile(r"T"),
2680
frozenset((token_hour, token_minute,
2682
token_day = Token(re.compile(r"(\d+)D"),
2683
datetime.timedelta(days=1),
2684
frozenset((token_time, token_end)))
2685
token_month = Token(re.compile(r"(\d+)M"),
2686
datetime.timedelta(weeks=4),
2687
frozenset((token_day, token_end)))
2688
token_year = Token(re.compile(r"(\d+)Y"),
2689
datetime.timedelta(weeks=52),
2690
frozenset((token_month, token_end)))
2691
token_week = Token(re.compile(r"(\d+)W"),
2692
datetime.timedelta(weeks=1),
2693
frozenset((token_end, )))
2694
token_duration = Token(re.compile(r"P"), None,
2695
frozenset((token_year, token_month,
2696
token_day, token_time,
2698
# Define starting values:
2700
value = datetime.timedelta()
2702
# Following valid tokens
2703
followers = frozenset((token_duration, ))
2704
# String left to parse
2706
# Loop until end token is found
2707
while found_token is not token_end:
2708
# Search for any currently valid tokens
2709
for token in followers:
2710
match = token.regexp.match(s)
2711
if match is not None:
2713
if token.value is not None:
2714
# Value found, parse digits
2715
factor = int(match.group(1), 10)
2716
# Add to value so far
2717
value += factor * token.value
2718
# Strip token from string
2719
s = token.regexp.sub("", s, 1)
2722
# Set valid next tokens
2723
followers = found_token.followers
2726
# No currently valid tokens were found
2727
raise ValueError("Invalid RFC 3339 duration: {!r}"
2733
1693
def string_to_delta(interval):
2734
1694
"""Parse a string and return a datetime.timedelta
2736
1696
>>> string_to_delta('7d')
2737
1697
datetime.timedelta(7)
2738
1698
>>> string_to_delta('60s')
2833
1811
parser.add_argument("--no-dbus", action="store_false",
2834
1812
dest="use_dbus", help="Do not provide D-Bus"
2835
" system bus interface", default=None)
1813
" system bus interface")
2836
1814
parser.add_argument("--no-ipv6", action="store_false",
2837
dest="use_ipv6", help="Do not use IPv6",
2839
parser.add_argument("--no-restore", action="store_false",
2840
dest="restore", help="Do not restore stored"
2841
" state", default=None)
2842
parser.add_argument("--socket", type=int,
2843
help="Specify a file descriptor to a network"
2844
" socket to use instead of creating one")
2845
parser.add_argument("--statedir", metavar="DIR",
2846
help="Directory to save/restore state in")
2847
parser.add_argument("--foreground", action="store_true",
2848
help="Run in foreground", default=None)
2849
parser.add_argument("--no-zeroconf", action="store_false",
2850
dest="zeroconf", help="Do not use Zeroconf",
1815
dest="use_ipv6", help="Do not use IPv6")
2853
1816
options = parser.parse_args()
2855
1818
if options.check:
2857
fail_count, test_count = doctest.testmod()
2858
sys.exit(os.EX_OK if fail_count == 0 else 1)
2860
1823
# Default values for config file for server-global settings
2861
server_defaults = {"interface": "",
2866
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2867
":+SIGN-DSA-SHA256",
2868
"servicename": "Mandos",
2874
"statedir": "/var/lib/mandos",
2875
"foreground": "False",
1824
server_defaults = { "interface": "",
1829
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1830
"servicename": "Mandos",
2879
1836
# Parse config file for server-global settings
2880
1837
server_config = configparser.SafeConfigParser(server_defaults)
2881
1838
del server_defaults
2882
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1839
server_config.read(os.path.join(options.configdir,
2883
1841
# Convert the SafeConfigParser object to a dict
2884
1842
server_settings = server_config.defaults()
2885
1843
# Use the appropriate methods on the non-string config options
2886
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1844
for option in ("debug", "use_dbus", "use_ipv6"):
2887
1845
server_settings[option] = server_config.getboolean("DEFAULT",
2889
1847
if server_settings["port"]:
2890
1848
server_settings["port"] = server_config.getint("DEFAULT",
2892
if server_settings["socket"]:
2893
server_settings["socket"] = server_config.getint("DEFAULT",
2895
# Later, stdin will, and stdout and stderr might, be dup'ed
2896
# over with an opened os.devnull. But we don't want this to
2897
# happen with a supplied network socket.
2898
if 0 <= server_settings["socket"] <= 2:
2899
server_settings["socket"] = os.dup(server_settings
2901
1850
del server_config
2903
1852
# Override the settings from the config file with command line
2904
1853
# options, if set.
2905
1854
for option in ("interface", "address", "port", "debug",
2906
"priority", "servicename", "configdir", "use_dbus",
2907
"use_ipv6", "debuglevel", "restore", "statedir",
2908
"socket", "foreground", "zeroconf"):
1855
"priority", "servicename", "configdir",
1856
"use_dbus", "use_ipv6", "debuglevel"):
2909
1857
value = getattr(options, option)
2910
1858
if value is not None:
2911
1859
server_settings[option] = value
2913
1861
# Force all strings to be unicode
2914
1862
for option in server_settings.keys():
2915
if isinstance(server_settings[option], bytes):
2916
server_settings[option] = (server_settings[option]
2918
# Force all boolean options to be boolean
2919
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2920
"foreground", "zeroconf"):
2921
server_settings[option] = bool(server_settings[option])
2922
# Debug implies foreground
2923
if server_settings["debug"]:
2924
server_settings["foreground"] = True
1863
if type(server_settings[option]) is str:
1864
server_settings[option] = unicode(server_settings[option])
2925
1865
# Now we have our good server settings in "server_settings"
2927
1867
##################################################################
2929
if (not server_settings["zeroconf"]
2930
and not (server_settings["port"]
2931
or server_settings["socket"] != "")):
2932
parser.error("Needs port or socket to work without Zeroconf")
2934
1869
# For convenience
2935
1870
debug = server_settings["debug"]
2936
1871
debuglevel = server_settings["debuglevel"]
2937
1872
use_dbus = server_settings["use_dbus"]
2938
1873
use_ipv6 = server_settings["use_ipv6"]
2939
stored_state_path = os.path.join(server_settings["statedir"],
2941
foreground = server_settings["foreground"]
2942
zeroconf = server_settings["zeroconf"]
2945
initlogger(debug, logging.DEBUG)
2950
level = getattr(logging, debuglevel.upper())
2951
initlogger(debug, level)
2953
1875
if server_settings["servicename"] != "Mandos":
2954
syslogger.setFormatter(
2955
logging.Formatter('Mandos ({}) [%(process)d]:'
2956
' %(levelname)s: %(message)s'.format(
2957
server_settings["servicename"])))
1876
syslogger.setFormatter(logging.Formatter
1877
('Mandos (%s) [%%(process)d]:'
1878
' %%(levelname)s: %%(message)s'
1879
% server_settings["servicename"]))
2959
1881
# Parse config file with clients
2960
client_config = configparser.SafeConfigParser(Client
1882
client_defaults = { "timeout": "5m",
1883
"extended_timeout": "15m",
1885
"checker": "fping -q -- %%(host)s",
1887
"approval_delay": "0s",
1888
"approval_duration": "1s",
1890
client_config = configparser.SafeConfigParser(client_defaults)
2962
1891
client_config.read(os.path.join(server_settings["configdir"],
2963
1892
"clients.conf"))
2965
1894
global mandos_dbus_service
2966
1895
mandos_dbus_service = None
2969
if server_settings["socket"] != "":
2970
socketfd = server_settings["socket"]
2971
tcp_server = MandosServer(
2972
(server_settings["address"], server_settings["port"]),
2974
interface=(server_settings["interface"] or None),
2976
gnutls_priority=server_settings["priority"],
2980
pidfilename = "/run/mandos.pid"
2981
if not os.path.isdir("/run/."):
2982
pidfilename = "/var/run/mandos.pid"
2985
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2986
except IOError as e:
2987
logger.error("Could not open file %r", pidfilename,
2990
for name, group in (("_mandos", "_mandos"),
2991
("mandos", "mandos"),
2992
("nobody", "nogroup")):
2994
uid = pwd.getpwnam(name).pw_uid
2995
gid = pwd.getpwnam(group).pw_gid
1897
tcp_server = MandosServer((server_settings["address"],
1898
server_settings["port"]),
1900
interface=(server_settings["interface"]
1904
server_settings["priority"],
1907
pidfilename = "/var/run/mandos.pid"
1909
pidfile = open(pidfilename, "w")
1911
logger.error("Could not open file %r", pidfilename)
1914
uid = pwd.getpwnam("_mandos").pw_uid
1915
gid = pwd.getpwnam("_mandos").pw_gid
1918
uid = pwd.getpwnam("mandos").pw_uid
1919
gid = pwd.getpwnam("mandos").pw_gid
2997
1920
except KeyError:
1922
uid = pwd.getpwnam("nobody").pw_uid
1923
gid = pwd.getpwnam("nobody").pw_gid
3006
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3008
1930
except OSError as error:
3009
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3010
.format(uid, gid, os.strerror(error.errno)))
3011
if error.errno != errno.EPERM:
1931
if error[0] != errno.EPERM:
1934
if not debug and not debuglevel:
1935
syslogger.setLevel(logging.WARNING)
1936
console.setLevel(logging.WARNING)
1938
level = getattr(logging, debuglevel.upper())
1939
syslogger.setLevel(level)
1940
console.setLevel(level)
3015
1943
# Enable all possible GnuTLS debugging
3017
1945
# "Use a log level over 10 to enable all debugging options."
3018
1946
# - GnuTLS manual
3019
gnutls.global_set_log_level(11)
1947
gnutls.library.functions.gnutls_global_set_log_level(11)
1949
@gnutls.library.types.gnutls_log_func
3022
1950
def debug_gnutls(level, string):
3023
1951
logger.debug("GnuTLS: %s", string[:-1])
3025
gnutls.global_set_log_function(debug_gnutls)
1953
(gnutls.library.functions
1954
.gnutls_global_set_log_function(debug_gnutls))
3027
1956
# Redirect stdin so all checkers get /dev/null
3028
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1957
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3029
1958
os.dup2(null, sys.stdin.fileno())
1962
# No console logging
1963
logger.removeHandler(console)
3033
1965
# Need to fork before connecting to D-Bus
3035
1967
# Close all input and output, do double fork, etc.
3038
# multiprocessing will use threads, so before we use GLib we need
3039
# to inform GLib that threads will be used.
3042
1970
global main_loop
3043
1971
# From the Avahi example code
3044
DBusGMainLoop(set_as_default=True)
3045
main_loop = GLib.MainLoop()
1972
DBusGMainLoop(set_as_default=True )
1973
main_loop = gobject.MainLoop()
3046
1974
bus = dbus.SystemBus()
3047
1975
# End of Avahi example code
3050
1978
bus_name = dbus.service.BusName("se.recompile.Mandos",
3053
old_bus_name = dbus.service.BusName(
3054
"se.bsnet.fukt.Mandos", bus,
3056
except dbus.exceptions.DBusException as e:
3057
logger.error("Disabling D-Bus:", exc_info=e)
1979
bus, do_not_queue=True)
1980
old_bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1981
bus, do_not_queue=True)
1982
except dbus.exceptions.NameExistsException as e:
1983
logger.error(unicode(e) + ", disabling D-Bus")
3058
1984
use_dbus = False
3059
1985
server_settings["use_dbus"] = False
3060
1986
tcp_server.use_dbus = False
3062
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3063
service = AvahiServiceToSyslog(
3064
name=server_settings["servicename"],
3065
servicetype="_mandos._tcp",
3068
if server_settings["interface"]:
3069
service.interface = if_nametoindex(
3070
server_settings["interface"].encode("utf-8"))
1987
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1988
service = AvahiService(name = server_settings["servicename"],
1989
servicetype = "_mandos._tcp",
1990
protocol = protocol, bus = bus)
1991
if server_settings["interface"]:
1992
service.interface = (if_nametoindex
1993
(str(server_settings["interface"])))
3072
1995
global multiprocessing_manager
3073
1996
multiprocessing_manager = multiprocessing.Manager()
3075
1998
client_class = Client
3077
client_class = functools.partial(ClientDBus, bus=bus)
3079
client_settings = Client.config_parser(client_config)
3080
old_client_settings = {}
3083
# This is used to redirect stdout and stderr for checker processes
3085
wnull = open(os.devnull, "w") # A writable /dev/null
3086
# Only used if server is running in foreground but not in debug
3088
if debug or not foreground:
3091
# Get client data and settings from last running state.
3092
if server_settings["restore"]:
3094
with open(stored_state_path, "rb") as stored_state:
3095
if sys.version_info.major == 2:
3096
clients_data, old_client_settings = pickle.load(
3099
bytes_clients_data, bytes_old_client_settings = (
3100
pickle.load(stored_state, encoding="bytes"))
3101
# Fix bytes to strings
3104
clients_data = {(key.decode("utf-8")
3105
if isinstance(key, bytes)
3108
bytes_clients_data.items()}
3109
del bytes_clients_data
3110
for key in clients_data:
3111
value = {(k.decode("utf-8")
3112
if isinstance(k, bytes) else k): v
3114
clients_data[key].items()}
3115
clients_data[key] = value
3117
value["client_structure"] = [
3119
if isinstance(s, bytes)
3121
value["client_structure"]]
3123
for k in ("name", "host"):
3124
if isinstance(value[k], bytes):
3125
value[k] = value[k].decode("utf-8")
3126
# old_client_settings
3128
old_client_settings = {
3129
(key.decode("utf-8")
3130
if isinstance(key, bytes)
3133
bytes_old_client_settings.items()}
3134
del bytes_old_client_settings
3136
for value in old_client_settings.values():
3137
if isinstance(value["host"], bytes):
3138
value["host"] = (value["host"]
3140
os.remove(stored_state_path)
3141
except IOError as e:
3142
if e.errno == errno.ENOENT:
3143
logger.warning("Could not load persistent state:"
3144
" {}".format(os.strerror(e.errno)))
3146
logger.critical("Could not load persistent state:",
3149
except EOFError as e:
3150
logger.warning("Could not load persistent state: "
3154
with PGPEngine() as pgp:
3155
for client_name, client in clients_data.items():
3156
# Skip removed clients
3157
if client_name not in client_settings:
3160
# Decide which value to use after restoring saved state.
3161
# We have three different values: Old config file,
3162
# new config file, and saved state.
3163
# New config value takes precedence if it differs from old
3164
# config value, otherwise use saved state.
3165
for name, value in client_settings[client_name].items():
3167
# For each value in new config, check if it
3168
# differs from the old config value (Except for
3169
# the "secret" attribute)
3170
if (name != "secret"
3172
old_client_settings[client_name][name])):
3173
client[name] = value
3177
# Clients who has passed its expire date can still be
3178
# enabled if its last checker was successful. A Client
3179
# whose checker succeeded before we stored its state is
3180
# assumed to have successfully run all checkers during
3182
if client["enabled"]:
3183
if datetime.datetime.utcnow() >= client["expires"]:
3184
if not client["last_checked_ok"]:
3186
"disabling client {} - Client never "
3187
"performed a successful checker".format(
3189
client["enabled"] = False
3190
elif client["last_checker_status"] != 0:
3192
"disabling client {} - Client last"
3193
" checker failed with error code"
3196
client["last_checker_status"]))
3197
client["enabled"] = False
3199
client["expires"] = (
3200
datetime.datetime.utcnow()
3201
+ client["timeout"])
3202
logger.debug("Last checker succeeded,"
3203
" keeping {} enabled".format(
2000
client_class = functools.partial(ClientDBusTransitional, bus = bus)
2001
def client_config_items(config, section):
2002
special_settings = {
2003
"approved_by_default":
2004
lambda: config.getboolean(section,
2005
"approved_by_default"),
2007
for name, value in config.items(section):
3206
client["secret"] = pgp.decrypt(
3207
client["encrypted_secret"],
3208
client_settings[client_name]["secret"])
3210
# If decryption fails, we use secret from new settings
3211
logger.debug("Failed to decrypt {} old secret".format(
3213
client["secret"] = (client_settings[client_name]
3216
# Add/remove clients based on new changes made to config
3217
for client_name in (set(old_client_settings)
3218
- set(client_settings)):
3219
del clients_data[client_name]
3220
for client_name in (set(client_settings)
3221
- set(old_client_settings)):
3222
clients_data[client_name] = client_settings[client_name]
3224
# Create all client objects
3225
for client_name, client in clients_data.items():
3226
tcp_server.clients[client_name] = client_class(
3229
server_settings=server_settings)
2009
yield (name, special_settings[name]())
2013
tcp_server.clients.update(set(
2014
client_class(name = section,
2015
config= dict(client_config_items(
2016
client_config, section)))
2017
for section in client_config.sections()))
3231
2018
if not tcp_server.clients:
3232
2019
logger.warning("No clients defined")
3235
if pidfile is not None:
3239
print(pid, file=pidfile)
3241
logger.error("Could not write to file %r with PID %d",
2025
pidfile.write(str(pid) + "\n".encode("utf-8"))
2028
logger.error("Could not write to file %r with PID %d",
2031
# "pidfile" was never created
3244
2033
del pidfilename
3246
for termsig in (signal.SIGHUP, signal.SIGTERM):
3247
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3248
lambda: main_loop.quit() and False)
2035
signal.signal(signal.SIGINT, signal.SIG_IGN)
2037
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2038
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3252
@alternate_dbus_interfaces(
3253
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3254
class MandosDBusService(DBusObjectWithObjectManager):
2041
class MandosDBusService(dbus.service.Object):
3255
2042
"""A D-Bus proxy object"""
3257
2043
def __init__(self):
3258
2044
dbus.service.Object.__init__(self, bus, "/")
3260
2045
_interface = "se.recompile.Mandos"
3262
2047
@dbus.service.signal(_interface, signature="o")
3263
2048
def ClientAdded(self, objpath):
3267
2052
@dbus.service.signal(_interface, signature="ss")
3268
2053
def ClientNotFound(self, fingerprint, address):
3272
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3274
2057
@dbus.service.signal(_interface, signature="os")
3275
2058
def ClientRemoved(self, objpath, name):
3279
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3281
2062
@dbus.service.method(_interface, out_signature="ao")
3282
2063
def GetAllClients(self):
3284
return dbus.Array(c.dbus_object_path for c in
3285
tcp_server.clients.values())
3287
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2065
return dbus.Array(c.dbus_object_path
2066
for c in tcp_server.clients)
3289
2068
@dbus.service.method(_interface,
3290
2069
out_signature="a{oa{sv}}")
3291
2070
def GetAllClientsWithProperties(self):
3293
2072
return dbus.Dictionary(
3294
{c.dbus_object_path: c.GetAll(
3295
"se.recompile.Mandos.Client")
3296
for c in tcp_server.clients.values()},
2073
((c.dbus_object_path, c.GetAll(""))
2074
for c in tcp_server.clients),
3297
2075
signature="oa{sv}")
3299
2077
@dbus.service.method(_interface, in_signature="o")
3300
2078
def RemoveClient(self, object_path):
3302
for c in tcp_server.clients.values():
2080
for c in tcp_server.clients:
3303
2081
if c.dbus_object_path == object_path:
3304
del tcp_server.clients[c.name]
2082
tcp_server.clients.remove(c)
3305
2083
c.remove_from_connection()
3306
# Don't signal the disabling
2084
# Don't signal anything except ClientRemoved
3307
2085
c.disable(quiet=True)
3308
# Emit D-Bus signal for removal
3309
self.client_removed_signal(c)
2087
self.ClientRemoved(object_path, c.name)
3311
2089
raise KeyError(object_path)
3315
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3316
out_signature="a{oa{sa{sv}}}")
3317
def GetManagedObjects(self):
3319
return dbus.Dictionary(
3320
{client.dbus_object_path:
3322
{interface: client.GetAll(interface)
3324
client._get_all_interface_names()})
3325
for client in tcp_server.clients.values()})
3327
def client_added_signal(self, client):
3328
"""Send the new standard signal and the old signal"""
3330
# New standard signal
3331
self.InterfacesAdded(
3332
client.dbus_object_path,
3334
{interface: client.GetAll(interface)
3336
client._get_all_interface_names()}))
3338
self.ClientAdded(client.dbus_object_path)
3340
def client_removed_signal(self, client):
3341
"""Send the new standard signal and the old signal"""
3343
# New standard signal
3344
self.InterfacesRemoved(
3345
client.dbus_object_path,
3346
client._get_all_interface_names())
3348
self.ClientRemoved(client.dbus_object_path,
3351
mandos_dbus_service = MandosDBusService()
3353
# Save modules to variables to exempt the modules from being
3354
# unloaded before the function registered with atexit() is run.
3355
mp = multiprocessing
2093
class MandosDBusServiceTransitional(MandosDBusService):
2094
__metaclass__ = AlternateDBusNamesMetaclass
2095
mandos_dbus_service = MandosDBusServiceTransitional()
3359
2098
"Cleanup function; run on exit"
3363
mp.active_children()
3365
if not (tcp_server.clients or client_settings):
3368
# Store client before exiting. Secrets are encrypted with key
3369
# based on what config file has. If config file is
3370
# removed/edited, old secret will thus be unrecovable.
3372
with PGPEngine() as pgp:
3373
for client in tcp_server.clients.values():
3374
key = client_settings[client.name]["secret"]
3375
client.encrypted_secret = pgp.encrypt(client.secret,
3379
# A list of attributes that can not be pickled
3381
exclude = {"bus", "changedstate", "secret",
3382
"checker", "server_settings"}
3383
for name, typ in inspect.getmembers(dbus.service
3387
client_dict["encrypted_secret"] = (client
3389
for attr in client.client_structure:
3390
if attr not in exclude:
3391
client_dict[attr] = getattr(client, attr)
3393
clients[client.name] = client_dict
3394
del client_settings[client.name]["secret"]
3397
with tempfile.NamedTemporaryFile(
3401
dir=os.path.dirname(stored_state_path),
3402
delete=False) as stored_state:
3403
pickle.dump((clients, client_settings), stored_state,
3405
tempname = stored_state.name
3406
os.rename(tempname, stored_state_path)
3407
except (IOError, OSError) as e:
3413
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3414
logger.warning("Could not save persistent state: {}"
3415
.format(os.strerror(e.errno)))
3417
logger.warning("Could not save persistent state:",
3421
# Delete all clients, and settings from config
3422
2101
while tcp_server.clients:
3423
name, client = tcp_server.clients.popitem()
2102
client = tcp_server.clients.pop()
3425
2104
client.remove_from_connection()
3426
# Don't signal the disabling
2105
client.disable_hook = None
2106
# Don't signal anything except ClientRemoved
3427
2107
client.disable(quiet=True)
3428
# Emit D-Bus signal for removal
3430
mandos_dbus_service.client_removed_signal(client)
3431
client_settings.clear()
2110
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
3433
2113
atexit.register(cleanup)
3435
for client in tcp_server.clients.values():
2115
for client in tcp_server.clients:
3437
# Emit D-Bus signal for adding
3438
mandos_dbus_service.client_added_signal(client)
3439
# Need to initiate checking of clients
3441
client.init_checker()
2118
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3443
2121
tcp_server.enable()
3444
2122
tcp_server.server_activate()
3446
2124
# Find out what port we got
3448
service.port = tcp_server.socket.getsockname()[1]
2125
service.port = tcp_server.socket.getsockname()[1]
3450
2127
logger.info("Now listening on address %r, port %d,"
3451
" flowinfo %d, scope_id %d",
3452
*tcp_server.socket.getsockname())
2128
" flowinfo %d, scope_id %d"
2129
% tcp_server.socket.getsockname())
3454
logger.info("Now listening on address %r, port %d",
3455
*tcp_server.socket.getsockname())
3457
# service.interface = tcp_server.socket.getsockname()[3]
2131
logger.info("Now listening on address %r, port %d"
2132
% tcp_server.socket.getsockname())
2134
#service.interface = tcp_server.socket.getsockname()[3]
3461
# From the Avahi example code
3464
except dbus.exceptions.DBusException as error:
3465
logger.critical("D-Bus Exception", exc_info=error)
3468
# End of Avahi example code
3470
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3471
lambda *args, **kwargs:
3472
(tcp_server.handle_request
3473
(*args[2:], **kwargs) or True))
2137
# From the Avahi example code
2140
except dbus.exceptions.DBusException as error:
2141
logger.critical("DBusException: %s", error)
2144
# End of Avahi example code
2146
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2147
lambda *args, **kwargs:
2148
(tcp_server.handle_request
2149
(*args[2:], **kwargs) or True))
3475
2151
logger.debug("Starting main loop")
3476
2152
main_loop.run()
3477
2153
except AvahiError as error:
3478
logger.critical("Avahi Error", exc_info=error)
2154
logger.critical("AvahiError: %s", error)
3481
2157
except KeyboardInterrupt: