63
import cPickle as pickle
69
import cPickle as pickle
64
72
import multiprocessing
67
81
import dbus.service
82
from gi.repository import GLib
70
83
from dbus.mainloop.glib import DBusGMainLoop
73
86
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:
77
93
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
78
94
except AttributeError:
96
# This is where SO_BINDTODEVICE was up to and including Python
80
98
from IN import SO_BINDTODEVICE
81
99
except ImportError:
82
SO_BINDTODEVICE = None
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
89
syslogger = (logging.handlers.SysLogHandler
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
95
logger.addHandler(syslogger)
97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
101
logger.addHandler(console)
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,
160
address = "/dev/log"))
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
275
# Pretend that we have an Avahi module
277
"""This isn't so much a class as it is a module-like namespace.
278
It is instantiated once, and simulates having an Avahi module."""
279
IF_UNSPEC = -1 # avahi-common/address.h
280
PROTO_UNSPEC = -1 # avahi-common/address.h
281
PROTO_INET = 0 # avahi-common/address.h
282
PROTO_INET6 = 1 # avahi-common/address.h
283
DBUS_NAME = "org.freedesktop.Avahi"
284
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
285
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
286
DBUS_PATH_SERVER = "/"
287
def string_array_to_txt_array(self, t):
288
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
289
for s in t), signature="ay")
290
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
291
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
292
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
293
SERVER_INVALID = 0 # avahi-common/defs.h
294
SERVER_REGISTERING = 1 # avahi-common/defs.h
295
SERVER_RUNNING = 2 # avahi-common/defs.h
296
SERVER_COLLISION = 3 # avahi-common/defs.h
297
SERVER_FAILURE = 4 # avahi-common/defs.h
103
300
class AvahiError(Exception):
104
301
def __init__(self, value, *args, **kwargs):
105
302
self.value = value
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
303
return super(AvahiError, self).__init__(value, *args,
110
307
class AvahiServiceError(AvahiError):
113
311
class AvahiGroupError(AvahiError):
260
485
follow_name_owner_changes=True),
261
486
avahi.DBUS_INTERFACE_SERVER)
262
487
self.server.connect_to_signal("StateChanged",
263
self.server_state_changed)
488
self.server_state_changed)
264
489
self.server_state_changed(self.server.GetState())
492
class AvahiServiceToSyslog(AvahiService):
493
def rename(self, *args, **kwargs):
494
"""Add the new name to the syslog messages"""
495
ret = AvahiService.rename(self, *args, **kwargs)
496
syslogger.setFormatter(logging.Formatter(
497
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
# Pretend that we have a GnuTLS module
502
class GnuTLS(object):
503
"""This isn't so much a class as it is a module-like namespace.
504
It is instantiated once, and simulates having a GnuTLS module."""
506
_library = ctypes.cdll.LoadLibrary(
507
ctypes.util.find_library("gnutls"))
508
_need_version = b"3.3.0"
510
# Need to use class name "GnuTLS" here, since this method is
511
# called before the assignment to the "gnutls" global variable
513
if GnuTLS.check_version(self._need_version) is None:
514
raise GnuTLS.Error("Needs GnuTLS {} or later"
515
.format(self._need_version))
517
# Unless otherwise indicated, the constants and types below are
518
# all from the gnutls/gnutls.h C header file.
528
E_NO_CERTIFICATE_FOUND = -49
529
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
532
class session_int(ctypes.Structure):
534
session_t = ctypes.POINTER(session_int)
535
class certificate_credentials_st(ctypes.Structure):
537
certificate_credentials_t = ctypes.POINTER(
538
certificate_credentials_st)
539
certificate_type_t = ctypes.c_int
540
class datum_t(ctypes.Structure):
541
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
542
('size', ctypes.c_uint)]
543
class openpgp_crt_int(ctypes.Structure):
545
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
546
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
547
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
548
credentials_type_t = ctypes.c_int
549
transport_ptr_t = ctypes.c_void_p
550
close_request_t = ctypes.c_int
553
class Error(Exception):
554
# We need to use the class name "GnuTLS" here, since this
555
# exception might be raised from within GnuTLS.__init__,
556
# which is called before the assignment to the "gnutls"
557
# global variable has happened.
558
def __init__(self, message = None, code = None, args=()):
559
# Default usage is by a message string, but if a return
560
# code is passed, convert it to a string with
563
if message is None and code is not None:
564
message = GnuTLS.strerror(code)
565
return super(GnuTLS.Error, self).__init__(
568
class CertificateSecurityError(Error):
572
class Credentials(object):
574
self._c_object = gnutls.certificate_credentials_t()
575
gnutls.certificate_allocate_credentials(
576
ctypes.byref(self._c_object))
577
self.type = gnutls.CRD_CERTIFICATE
580
gnutls.certificate_free_credentials(self._c_object)
582
class ClientSession(object):
583
def __init__(self, socket, credentials = None):
584
self._c_object = gnutls.session_t()
585
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
586
gnutls.set_default_priority(self._c_object)
587
gnutls.transport_set_ptr(self._c_object, socket.fileno())
588
gnutls.handshake_set_private_extensions(self._c_object,
591
if credentials is None:
592
credentials = gnutls.Credentials()
593
gnutls.credentials_set(self._c_object, credentials.type,
594
ctypes.cast(credentials._c_object,
596
self.credentials = credentials
599
gnutls.deinit(self._c_object)
602
return gnutls.handshake(self._c_object)
604
def send(self, data):
608
data_len -= gnutls.record_send(self._c_object,
613
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
615
# Error handling functions
616
def _error_code(result):
617
"""A function to raise exceptions on errors, suitable
618
for the 'restype' attribute on ctypes functions"""
621
if result == gnutls.E_NO_CERTIFICATE_FOUND:
622
raise gnutls.CertificateSecurityError(code = result)
623
raise gnutls.Error(code = result)
625
def _retry_on_error(result, func, arguments):
626
"""A function to retry on some errors, suitable
627
for the 'errcheck' attribute on ctypes functions"""
629
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
630
return _error_code(result)
631
result = func(*arguments)
634
# Unless otherwise indicated, the function declarations below are
635
# all from the gnutls/gnutls.h C header file.
638
priority_set_direct = _library.gnutls_priority_set_direct
639
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
640
ctypes.POINTER(ctypes.c_char_p)]
641
priority_set_direct.restype = _error_code
643
init = _library.gnutls_init
644
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
645
init.restype = _error_code
647
set_default_priority = _library.gnutls_set_default_priority
648
set_default_priority.argtypes = [session_t]
649
set_default_priority.restype = _error_code
651
record_send = _library.gnutls_record_send
652
record_send.argtypes = [session_t, ctypes.c_void_p,
654
record_send.restype = ctypes.c_ssize_t
655
record_send.errcheck = _retry_on_error
657
certificate_allocate_credentials = (
658
_library.gnutls_certificate_allocate_credentials)
659
certificate_allocate_credentials.argtypes = [
660
ctypes.POINTER(certificate_credentials_t)]
661
certificate_allocate_credentials.restype = _error_code
663
certificate_free_credentials = (
664
_library.gnutls_certificate_free_credentials)
665
certificate_free_credentials.argtypes = [certificate_credentials_t]
666
certificate_free_credentials.restype = None
668
handshake_set_private_extensions = (
669
_library.gnutls_handshake_set_private_extensions)
670
handshake_set_private_extensions.argtypes = [session_t,
672
handshake_set_private_extensions.restype = None
674
credentials_set = _library.gnutls_credentials_set
675
credentials_set.argtypes = [session_t, credentials_type_t,
677
credentials_set.restype = _error_code
679
strerror = _library.gnutls_strerror
680
strerror.argtypes = [ctypes.c_int]
681
strerror.restype = ctypes.c_char_p
683
certificate_type_get = _library.gnutls_certificate_type_get
684
certificate_type_get.argtypes = [session_t]
685
certificate_type_get.restype = _error_code
687
certificate_get_peers = _library.gnutls_certificate_get_peers
688
certificate_get_peers.argtypes = [session_t,
689
ctypes.POINTER(ctypes.c_uint)]
690
certificate_get_peers.restype = ctypes.POINTER(datum_t)
692
global_set_log_level = _library.gnutls_global_set_log_level
693
global_set_log_level.argtypes = [ctypes.c_int]
694
global_set_log_level.restype = None
696
global_set_log_function = _library.gnutls_global_set_log_function
697
global_set_log_function.argtypes = [log_func]
698
global_set_log_function.restype = None
700
deinit = _library.gnutls_deinit
701
deinit.argtypes = [session_t]
702
deinit.restype = None
704
handshake = _library.gnutls_handshake
705
handshake.argtypes = [session_t]
706
handshake.restype = _error_code
707
handshake.errcheck = _retry_on_error
709
transport_set_ptr = _library.gnutls_transport_set_ptr
710
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
711
transport_set_ptr.restype = None
713
bye = _library.gnutls_bye
714
bye.argtypes = [session_t, close_request_t]
715
bye.restype = _error_code
716
bye.errcheck = _retry_on_error
718
check_version = _library.gnutls_check_version
719
check_version.argtypes = [ctypes.c_char_p]
720
check_version.restype = ctypes.c_char_p
722
# All the function declarations below are from gnutls/openpgp.h
724
openpgp_crt_init = _library.gnutls_openpgp_crt_init
725
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
726
openpgp_crt_init.restype = _error_code
728
openpgp_crt_import = _library.gnutls_openpgp_crt_import
729
openpgp_crt_import.argtypes = [openpgp_crt_t,
730
ctypes.POINTER(datum_t),
732
openpgp_crt_import.restype = _error_code
734
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
735
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
736
ctypes.POINTER(ctypes.c_uint)]
737
openpgp_crt_verify_self.restype = _error_code
739
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
740
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
741
openpgp_crt_deinit.restype = None
743
openpgp_crt_get_fingerprint = (
744
_library.gnutls_openpgp_crt_get_fingerprint)
745
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
749
openpgp_crt_get_fingerprint.restype = _error_code
751
# Remove non-public functions
752
del _error_code, _retry_on_error
753
# Create the global "gnutls" object, simulating a module
756
def call_pipe(connection, # : multiprocessing.Connection
757
func, *args, **kwargs):
758
"""This function is meant to be called by multiprocessing.Process
760
This function runs func(*args, **kwargs), and writes the resulting
761
return value on the provided multiprocessing.Connection.
763
connection.send(func(*args, **kwargs))
267
766
class Client(object):
268
767
"""A representation of a client host served by this server.
271
_approved: bool(); 'None' if not yet approved/disapproved
770
approved: bool(); 'None' if not yet approved/disapproved
272
771
approval_delay: datetime.timedelta(); Time to wait for approval
273
772
approval_duration: datetime.timedelta(); Duration of one approval
274
773
checker: subprocess.Popen(); a running checker process used
275
774
to see if the client lives.
276
775
'None' if no process is running.
277
checker_callback_tag: a gobject event source tag, or None
776
checker_callback_tag: a GLib event source tag, or None
278
777
checker_command: string; External command which is run to check
279
778
if client lives. %() expansions are done at
280
779
runtime with vars(self) as dict, so that for
281
780
instance %(name)s can be used in the command.
282
checker_initiator_tag: a gobject event source tag, or None
781
checker_initiator_tag: a GLib event source tag, or None
283
782
created: datetime.datetime(); (UTC) object creation
783
client_structure: Object describing what attributes a client has
784
and is used for storing the client at exit
284
785
current_checker_command: string; current running checker_command
285
disable_hook: If set, called by disable() as disable_hook(self)
286
disable_initiator_tag: a gobject event source tag, or None
786
disable_initiator_tag: a GLib event source tag, or None
288
788
fingerprint: string (40 or 32 hexadecimal digits); used to
289
789
uniquely identify the client
291
791
interval: datetime.timedelta(); How often to start a new checker
292
792
last_approval_request: datetime.datetime(); (UTC) or None
293
793
last_checked_ok: datetime.datetime(); (UTC) or None
294
last_enabled: datetime.datetime(); (UTC)
794
last_checker_status: integer between 0 and 255 reflecting exit
795
status of last checker. -1 reflects crashed
796
checker, -2 means no checker completed yet.
797
last_checker_signal: The signal which killed the last checker, if
798
last_checker_status is -1
799
last_enabled: datetime.datetime(); (UTC) or None
295
800
name: string; from the config file, used in log messages and
296
801
D-Bus identifiers
297
802
secret: bytestring; sent verbatim (over TLS) to client
298
803
timeout: datetime.timedelta(); How long from last_checked_ok
299
804
until this client is disabled
805
extended_timeout: extra long timeout when secret has been sent
300
806
runtime_expansions: Allowed attributes for runtime expansion.
807
expires: datetime.datetime(); time (UTC) when a client will be
809
server_settings: The server_settings dict from main()
303
812
runtime_expansions = ("approval_delay", "approval_duration",
304
"created", "enabled", "fingerprint",
305
"host", "interval", "last_checked_ok",
813
"created", "enabled", "expires",
814
"fingerprint", "host", "interval",
815
"last_approval_request", "last_checked_ok",
306
816
"last_enabled", "name", "timeout")
819
"extended_timeout": "PT15M",
821
"checker": "fping -q -- %%(host)s",
823
"approval_delay": "PT0S",
824
"approval_duration": "PT1S",
825
"approved_by_default": "True",
309
def _timedelta_to_milliseconds(td):
310
"Convert a datetime.timedelta() to milliseconds"
311
return ((td.days * 24 * 60 * 60 * 1000)
312
+ (td.seconds * 1000)
313
+ (td.microseconds // 1000))
315
def timeout_milliseconds(self):
316
"Return the 'timeout' attribute in milliseconds"
317
return self._timedelta_to_milliseconds(self.timeout)
319
def interval_milliseconds(self):
320
"Return the 'interval' attribute in milliseconds"
321
return self._timedelta_to_milliseconds(self.interval)
323
def approval_delay_milliseconds(self):
324
return self._timedelta_to_milliseconds(self.approval_delay)
326
def __init__(self, name = None, disable_hook=None, config=None):
327
"""Note: the 'checker' key in 'config' sets the
328
'checker_command' attribute and *not* the 'checker'
830
def config_parser(config):
831
"""Construct a new dict of client settings of this form:
832
{ client_name: {setting_name: value, ...}, ...}
833
with exceptions for any special settings as defined above.
834
NOTE: Must be a pure function. Must return the same result
835
value given the same arguments.
838
for client_name in config.sections():
839
section = dict(config.items(client_name))
840
client = settings[client_name] = {}
842
client["host"] = section["host"]
843
# Reformat values from string types to Python types
844
client["approved_by_default"] = config.getboolean(
845
client_name, "approved_by_default")
846
client["enabled"] = config.getboolean(client_name,
849
# Uppercase and remove spaces from fingerprint for later
850
# comparison purposes with return value from the
851
# fingerprint() function
852
client["fingerprint"] = (section["fingerprint"].upper()
854
if "secret" in section:
855
client["secret"] = codecs.decode(section["secret"]
858
elif "secfile" in section:
859
with open(os.path.expanduser(os.path.expandvars
860
(section["secfile"])),
862
client["secret"] = secfile.read()
864
raise TypeError("No secret or secfile for section {}"
866
client["timeout"] = string_to_delta(section["timeout"])
867
client["extended_timeout"] = string_to_delta(
868
section["extended_timeout"])
869
client["interval"] = string_to_delta(section["interval"])
870
client["approval_delay"] = string_to_delta(
871
section["approval_delay"])
872
client["approval_duration"] = string_to_delta(
873
section["approval_duration"])
874
client["checker_command"] = section["checker"]
875
client["last_approval_request"] = None
876
client["last_checked_ok"] = None
877
client["last_checker_status"] = -2
881
def __init__(self, settings, name = None, server_settings=None):
883
if server_settings is None:
885
self.server_settings = server_settings
886
# adding all client settings
887
for setting, value in settings.items():
888
setattr(self, setting, value)
891
if not hasattr(self, "last_enabled"):
892
self.last_enabled = datetime.datetime.utcnow()
893
if not hasattr(self, "expires"):
894
self.expires = (datetime.datetime.utcnow()
897
self.last_enabled = None
333
900
logger.debug("Creating client %r", self.name)
334
# Uppercase and remove spaces from fingerprint for later
335
# comparison purposes with return value from the fingerprint()
337
self.fingerprint = (config["fingerprint"].upper()
339
901
logger.debug(" Fingerprint: %s", self.fingerprint)
340
if "secret" in config:
341
self.secret = config["secret"].decode("base64")
342
elif "secfile" in config:
343
with open(os.path.expanduser(os.path.expandvars
344
(config["secfile"])),
346
self.secret = secfile.read()
348
raise TypeError("No secret or secfile for client %s"
350
self.host = config.get("host", "")
351
self.created = datetime.datetime.utcnow()
353
self.last_approval_request = None
354
self.last_enabled = None
355
self.last_checked_ok = None
356
self.timeout = string_to_delta(config["timeout"])
357
self.interval = string_to_delta(config["interval"])
358
self.disable_hook = disable_hook
902
self.created = settings.get("created",
903
datetime.datetime.utcnow())
905
# attributes specific for this server instance
359
906
self.checker = None
360
907
self.checker_initiator_tag = None
361
908
self.disable_initiator_tag = None
362
909
self.checker_callback_tag = None
363
self.checker_command = config["checker"]
364
910
self.current_checker_command = None
365
self.last_connect = None
366
self._approved = None
367
self.approved_by_default = config.get("approved_by_default",
369
912
self.approvals_pending = 0
370
self.approval_delay = string_to_delta(
371
config["approval_delay"])
372
self.approval_duration = string_to_delta(
373
config["approval_duration"])
374
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
913
self.changedstate = multiprocessing_manager.Condition(
914
multiprocessing_manager.Lock())
915
self.client_structure = [attr
916
for attr in self.__dict__.keys()
917
if not attr.startswith("_")]
918
self.client_structure.append("client_structure")
920
for name, t in inspect.getmembers(
921
type(self), lambda obj: isinstance(obj, property)):
922
if not name.startswith("_"):
923
self.client_structure.append(name)
925
# Send notice to process children that client state has changed
376
926
def send_changedstate(self):
377
self.changedstate.acquire()
378
self.changedstate.notify_all()
379
self.changedstate.release()
927
with self.changedstate:
928
self.changedstate.notify_all()
381
930
def enable(self):
382
931
"""Start this client's checker and timeout hooks"""
383
932
if getattr(self, "enabled", False):
384
933
# Already enabled
386
self.send_changedstate()
935
self.expires = datetime.datetime.utcnow() + self.timeout
387
937
self.last_enabled = datetime.datetime.utcnow()
388
# Schedule a new checker to be started an 'interval' from now,
389
# and every interval from then on.
390
self.checker_initiator_tag = (gobject.timeout_add
391
(self.interval_milliseconds(),
393
# Schedule a disable() when 'timeout' has passed
394
self.disable_initiator_tag = (gobject.timeout_add
395
(self.timeout_milliseconds(),
398
# Also start a new checker *right now*.
939
self.send_changedstate()
401
941
def disable(self, quiet=True):
402
942
"""Disable this client."""
403
943
if not getattr(self, "enabled", False):
406
self.send_changedstate()
408
946
logger.info("Disabling client %s", self.name)
409
if getattr(self, "disable_initiator_tag", False):
410
gobject.source_remove(self.disable_initiator_tag)
947
if getattr(self, "disable_initiator_tag", None) is not None:
948
GLib.source_remove(self.disable_initiator_tag)
411
949
self.disable_initiator_tag = None
412
if getattr(self, "checker_initiator_tag", False):
413
gobject.source_remove(self.checker_initiator_tag)
951
if getattr(self, "checker_initiator_tag", None) is not None:
952
GLib.source_remove(self.checker_initiator_tag)
414
953
self.checker_initiator_tag = None
415
954
self.stop_checker()
416
if self.disable_hook:
417
self.disable_hook(self)
418
955
self.enabled = False
419
# Do not run this again if called by a gobject.timeout_add
957
self.send_changedstate()
958
# Do not run this again if called by a GLib.timeout_add
422
961
def __del__(self):
423
self.disable_hook = None
426
def checker_callback(self, pid, condition, command):
964
def init_checker(self):
965
# Schedule a new checker to be started an 'interval' from now,
966
# and every interval from then on.
967
if self.checker_initiator_tag is not None:
968
GLib.source_remove(self.checker_initiator_tag)
969
self.checker_initiator_tag = GLib.timeout_add(
970
int(self.interval.total_seconds() * 1000),
972
# Schedule a disable() when 'timeout' has passed
973
if self.disable_initiator_tag is not None:
974
GLib.source_remove(self.disable_initiator_tag)
975
self.disable_initiator_tag = GLib.timeout_add(
976
int(self.timeout.total_seconds() * 1000), self.disable)
977
# Also start a new checker *right now*.
980
def checker_callback(self, source, condition, connection,
427
982
"""The checker has completed, so take appropriate actions."""
428
983
self.checker_callback_tag = None
429
984
self.checker = None
430
if os.WIFEXITED(condition):
431
exitstatus = os.WEXITSTATUS(condition)
985
# Read return code from connection (see call_pipe)
986
returncode = connection.recv()
990
self.last_checker_status = returncode
991
self.last_checker_signal = None
992
if self.last_checker_status == 0:
433
993
logger.info("Checker for %(name)s succeeded",
435
995
self.checked_ok()
437
logger.info("Checker for %(name)s failed",
997
logger.info("Checker for %(name)s failed", vars(self))
999
self.last_checker_status = -1
1000
self.last_checker_signal = -returncode
440
1001
logger.warning("Checker for %(name)s crashed?",
443
1005
def checked_ok(self):
444
"""Bump up the timeout for this client.
446
This should only be called when the client has been seen,
1006
"""Assert that the client has been seen, alive and well."""
449
1007
self.last_checked_ok = datetime.datetime.utcnow()
450
gobject.source_remove(self.disable_initiator_tag)
451
self.disable_initiator_tag = (gobject.timeout_add
452
(self.timeout_milliseconds(),
1008
self.last_checker_status = 0
1009
self.last_checker_signal = None
1012
def bump_timeout(self, timeout=None):
1013
"""Bump up the timeout for this client."""
1015
timeout = self.timeout
1016
if self.disable_initiator_tag is not None:
1017
GLib.source_remove(self.disable_initiator_tag)
1018
self.disable_initiator_tag = None
1019
if getattr(self, "enabled", False):
1020
self.disable_initiator_tag = GLib.timeout_add(
1021
int(timeout.total_seconds() * 1000), self.disable)
1022
self.expires = datetime.datetime.utcnow() + timeout
455
1024
def need_approval(self):
456
1025
self.last_approval_request = datetime.datetime.utcnow()
461
1030
If a checker already exists, leave it running and do
463
1032
# The reason for not killing a running checker is that if we
464
# did that, then if a checker (for some reason) started
465
# running slowly and taking more than 'interval' time, the
466
# client would inevitably timeout, since no checker would get
467
# a chance to run to completion. If we instead leave running
1033
# did that, and if a checker (for some reason) started running
1034
# slowly and taking more than 'interval' time, then the client
1035
# would inevitably timeout, since no checker would get a
1036
# chance to run to completion. If we instead leave running
468
1037
# checkers alone, the checker would have to take more time
469
1038
# than 'timeout' for the client to be disabled, which is as it
472
# If a checker exists, make sure it is not a zombie
474
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
475
except (AttributeError, OSError) as error:
476
if (isinstance(error, OSError)
477
and error.errno != errno.ECHILD):
481
logger.warning("Checker was a zombie")
482
gobject.source_remove(self.checker_callback_tag)
483
self.checker_callback(pid, status,
484
self.current_checker_command)
1041
if self.checker is not None and not self.checker.is_alive():
1042
logger.warning("Checker was not alive; joining")
485
1045
# Start a new checker if needed
486
1046
if self.checker is None:
1047
# Escape attributes for the shell
1049
attr: re.escape(str(getattr(self, attr)))
1050
for attr in self.runtime_expansions }
488
# In case checker_command has exactly one % operator
489
command = self.checker_command % self.host
491
# Escape attributes for the shell
492
escaped_attrs = dict(
494
re.escape(unicode(str(getattr(self, attr, "")),
498
self.runtime_expansions)
501
command = self.checker_command % escaped_attrs
502
except TypeError as error:
503
logger.error('Could not format string "%s":'
504
' %s', self.checker_command, error)
505
return True # Try again later
1052
command = self.checker_command % escaped_attrs
1053
except TypeError as error:
1054
logger.error('Could not format string "%s"',
1055
self.checker_command,
1057
return True # Try again later
506
1058
self.current_checker_command = command
508
logger.info("Starting checker %r for %s",
510
# We don't need to redirect stdout and stderr, since
511
# in normal mode, that is already done by daemon(),
512
# and in debug mode we don't want to. (Stdin is
513
# always replaced by /dev/null.)
514
self.checker = subprocess.Popen(command,
517
self.checker_callback_tag = (gobject.child_watch_add
519
self.checker_callback,
521
# The checker may have completed before the gobject
522
# watch was added. Check for this.
523
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
525
gobject.source_remove(self.checker_callback_tag)
526
self.checker_callback(pid, status, command)
527
except OSError as error:
528
logger.error("Failed to start subprocess: %s",
530
# Re-run this periodically if run by gobject.timeout_add
1059
logger.info("Starting checker %r for %s", command,
1061
# We don't need to redirect stdout and stderr, since
1062
# in normal mode, that is already done by daemon(),
1063
# and in debug mode we don't want to. (Stdin is
1064
# always replaced by /dev/null.)
1065
# The exception is when not debugging but nevertheless
1066
# running in the foreground; use the previously
1068
popen_args = { "close_fds": True,
1071
if (not self.server_settings["debug"]
1072
and self.server_settings["foreground"]):
1073
popen_args.update({"stdout": wnull,
1075
pipe = multiprocessing.Pipe(duplex = False)
1076
self.checker = multiprocessing.Process(
1078
args = (pipe[1], subprocess.call, command),
1079
kwargs = popen_args)
1080
self.checker.start()
1081
self.checker_callback_tag = GLib.io_add_watch(
1082
pipe[0].fileno(), GLib.IO_IN,
1083
self.checker_callback, pipe[0], command)
1084
# Re-run this periodically if run by GLib.timeout_add
533
1087
def stop_checker(self):
534
1088
"""Force the checker process, if any, to stop."""
535
1089
if self.checker_callback_tag:
536
gobject.source_remove(self.checker_callback_tag)
1090
GLib.source_remove(self.checker_callback_tag)
537
1091
self.checker_callback_tag = None
538
1092
if getattr(self, "checker", None) is None:
540
1094
logger.debug("Stopping checker for %(name)s", vars(self))
542
os.kill(self.checker.pid, signal.SIGTERM)
544
#if self.checker.poll() is None:
545
# os.kill(self.checker.pid, signal.SIGKILL)
546
except OSError as error:
547
if error.errno != errno.ESRCH: # No such process
1095
self.checker.terminate()
549
1096
self.checker = None
551
def dbus_service_property(dbus_interface, signature="v",
552
access="readwrite", byte_arrays=False):
1099
def dbus_service_property(dbus_interface,
553
1103
"""Decorators for marking methods of a DBusObjectWithProperties to
554
1104
become properties on the D-Bus.
600
class DBusObjectWithProperties(dbus.service.Object):
1194
class DBusObjectWithAnnotations(dbus.service.Object):
1195
"""A D-Bus object with annotations.
1197
Classes inheriting from this can use the dbus_annotations
1198
decorator to add annotations to methods or signals.
1202
def _is_dbus_thing(thing):
1203
"""Returns a function testing if an attribute is a D-Bus thing
1205
If called like _is_dbus_thing("method") it returns a function
1206
suitable for use as predicate to inspect.getmembers().
1208
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1211
def _get_all_dbus_things(self, thing):
1212
"""Returns a generator of (name, attribute) pairs
1214
return ((getattr(athing.__get__(self), "_dbus_name", name),
1215
athing.__get__(self))
1216
for cls in self.__class__.__mro__
1218
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1220
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1221
out_signature = "s",
1222
path_keyword = 'object_path',
1223
connection_keyword = 'connection')
1224
def Introspect(self, object_path, connection):
1225
"""Overloading of standard D-Bus method.
1227
Inserts annotation tags on methods and signals.
1229
xmlstring = dbus.service.Object.Introspect(self, object_path,
1232
document = xml.dom.minidom.parseString(xmlstring)
1234
for if_tag in document.getElementsByTagName("interface"):
1235
# Add annotation tags
1236
for typ in ("method", "signal"):
1237
for tag in if_tag.getElementsByTagName(typ):
1239
for name, prop in (self.
1240
_get_all_dbus_things(typ)):
1241
if (name == tag.getAttribute("name")
1242
and prop._dbus_interface
1243
== if_tag.getAttribute("name")):
1244
annots.update(getattr(
1245
prop, "_dbus_annotations", {}))
1246
for name, value in annots.items():
1247
ann_tag = document.createElement(
1249
ann_tag.setAttribute("name", name)
1250
ann_tag.setAttribute("value", value)
1251
tag.appendChild(ann_tag)
1252
# Add interface annotation tags
1253
for annotation, value in dict(
1254
itertools.chain.from_iterable(
1255
annotations().items()
1256
for name, annotations
1257
in self._get_all_dbus_things("interface")
1258
if name == if_tag.getAttribute("name")
1260
ann_tag = document.createElement("annotation")
1261
ann_tag.setAttribute("name", annotation)
1262
ann_tag.setAttribute("value", value)
1263
if_tag.appendChild(ann_tag)
1264
# Fix argument name for the Introspect method itself
1265
if (if_tag.getAttribute("name")
1266
== dbus.INTROSPECTABLE_IFACE):
1267
for cn in if_tag.getElementsByTagName("method"):
1268
if cn.getAttribute("name") == "Introspect":
1269
for arg in cn.getElementsByTagName("arg"):
1270
if (arg.getAttribute("direction")
1272
arg.setAttribute("name",
1274
xmlstring = document.toxml("utf-8")
1276
except (AttributeError, xml.dom.DOMException,
1277
xml.parsers.expat.ExpatError) as error:
1278
logger.error("Failed to override Introspection method",
1283
class DBusObjectWithProperties(DBusObjectWithAnnotations):
601
1284
"""A D-Bus object with properties.
603
1286
Classes inheriting from this can use the dbus_service_property
604
1287
decorator to expose methods as D-Bus properties. It exposes the
605
1288
standard Get(), Set(), and GetAll() methods on the D-Bus.
609
def _is_dbus_property(obj):
610
return getattr(obj, "_dbus_is_property", False)
612
def _get_all_dbus_properties(self):
613
"""Returns a generator of (name, attribute) pairs
615
return ((prop._dbus_name, prop)
617
inspect.getmembers(self, self._is_dbus_property))
619
1291
def _get_dbus_property(self, interface_name, property_name):
620
1292
"""Returns a bound method if one exists which is a D-Bus
621
1293
property with the specified name and interface.
623
for name in (property_name,
624
property_name + "_dbus_property"):
625
prop = getattr(self, name, None)
627
or not self._is_dbus_property(prop)
628
or prop._dbus_name != property_name
629
or (interface_name and prop._dbus_interface
630
and interface_name != prop._dbus_interface)):
1295
for cls in self.__class__.__mro__:
1296
for name, value in inspect.getmembers(
1297
cls, self._is_dbus_thing("property")):
1298
if (value._dbus_name == property_name
1299
and value._dbus_interface == interface_name):
1300
return value.__get__(self)
633
1302
# No such property
634
raise DBusPropertyNotFound(self.dbus_object_path + ":"
635
+ interface_name + "."
638
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1303
raise DBusPropertyNotFound("{}:{}.{}".format(
1304
self.dbus_object_path, interface_name, property_name))
1307
def _get_all_interface_names(cls):
1308
"""Get a sequence of all interfaces supported by an object"""
1309
return (name for name in set(getattr(getattr(x, attr),
1310
"_dbus_interface", None)
1311
for x in (inspect.getmro(cls))
1313
if name is not None)
1315
@dbus.service.method(dbus.PROPERTIES_IFACE,
639
1317
out_signature="v")
640
1318
def Get(self, interface_name, property_name):
641
1319
"""Standard D-Bus property Get() method, see D-Bus standard.
685
1366
if not hasattr(value, "variant_level"):
1367
properties[name] = value
688
all[name] = type(value)(value, variant_level=
689
value.variant_level+1)
690
return dbus.Dictionary(all, signature="sv")
1369
properties[name] = type(value)(
1370
value, variant_level = value.variant_level + 1)
1371
return dbus.Dictionary(properties, signature="sv")
1373
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1374
def PropertiesChanged(self, interface_name, changed_properties,
1375
invalidated_properties):
1376
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
692
1381
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
693
1382
out_signature="s",
694
1383
path_keyword='object_path',
695
1384
connection_keyword='connection')
696
1385
def Introspect(self, object_path, connection):
697
"""Standard D-Bus method, overloaded to insert property tags.
1386
"""Overloading of standard D-Bus method.
1388
Inserts property tags and interface annotation tags.
699
xmlstring = dbus.service.Object.Introspect(self, object_path,
1390
xmlstring = DBusObjectWithAnnotations.Introspect(self,
702
1394
document = xml.dom.minidom.parseString(xmlstring)
703
1396
def make_tag(document, name, prop):
704
1397
e = document.createElement("property")
705
1398
e.setAttribute("name", name)
706
1399
e.setAttribute("type", prop._dbus_signature)
707
1400
e.setAttribute("access", prop._dbus_access)
709
1403
for if_tag in document.getElementsByTagName("interface"):
710
1405
for tag in (make_tag(document, name, prop)
712
in self._get_all_dbus_properties()
1407
in self._get_all_dbus_things("property")
713
1408
if prop._dbus_interface
714
1409
== if_tag.getAttribute("name")):
715
1410
if_tag.appendChild(tag)
1411
# Add annotation tags for properties
1412
for tag in if_tag.getElementsByTagName("property"):
1414
for name, prop in self._get_all_dbus_things(
1416
if (name == tag.getAttribute("name")
1417
and prop._dbus_interface
1418
== if_tag.getAttribute("name")):
1419
annots.update(getattr(
1420
prop, "_dbus_annotations", {}))
1421
for name, value in annots.items():
1422
ann_tag = document.createElement(
1424
ann_tag.setAttribute("name", name)
1425
ann_tag.setAttribute("value", value)
1426
tag.appendChild(ann_tag)
716
1427
# Add the names to the return values for the
717
1428
# "org.freedesktop.DBus.Properties" methods
718
1429
if (if_tag.getAttribute("name")
733
1444
except (AttributeError, xml.dom.DOMException,
734
1445
xml.parsers.expat.ExpatError) as error:
735
1446
logger.error("Failed to override Introspection method",
1451
dbus.OBJECT_MANAGER_IFACE
1452
except AttributeError:
1453
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1455
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1456
"""A D-Bus object with an ObjectManager.
1458
Classes inheriting from this exposes the standard
1459
GetManagedObjects call and the InterfacesAdded and
1460
InterfacesRemoved signals on the standard
1461
"org.freedesktop.DBus.ObjectManager" interface.
1463
Note: No signals are sent automatically; they must be sent
1466
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1467
out_signature = "a{oa{sa{sv}}}")
1468
def GetManagedObjects(self):
1469
"""This function must be overridden"""
1470
raise NotImplementedError()
1472
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1473
signature = "oa{sa{sv}}")
1474
def InterfacesAdded(self, object_path, interfaces_and_properties):
1477
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1478
def InterfacesRemoved(self, object_path, interfaces):
1481
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1482
out_signature = "s",
1483
path_keyword = 'object_path',
1484
connection_keyword = 'connection')
1485
def Introspect(self, object_path, connection):
1486
"""Overloading of standard D-Bus method.
1488
Override return argument name of GetManagedObjects to be
1489
"objpath_interfaces_and_properties"
1491
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1495
document = xml.dom.minidom.parseString(xmlstring)
1497
for if_tag in document.getElementsByTagName("interface"):
1498
# Fix argument name for the GetManagedObjects method
1499
if (if_tag.getAttribute("name")
1500
== dbus.OBJECT_MANAGER_IFACE):
1501
for cn in if_tag.getElementsByTagName("method"):
1502
if (cn.getAttribute("name")
1503
== "GetManagedObjects"):
1504
for arg in cn.getElementsByTagName("arg"):
1505
if (arg.getAttribute("direction")
1509
"objpath_interfaces"
1511
xmlstring = document.toxml("utf-8")
1513
except (AttributeError, xml.dom.DOMException,
1514
xml.parsers.expat.ExpatError) as error:
1515
logger.error("Failed to override Introspection method",
1519
def datetime_to_dbus(dt, variant_level=0):
1520
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1522
return dbus.String("", variant_level = variant_level)
1523
return dbus.String(dt.isoformat(), variant_level=variant_level)
1526
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1527
"""A class decorator; applied to a subclass of
1528
dbus.service.Object, it will add alternate D-Bus attributes with
1529
interface names according to the "alt_interface_names" mapping.
1532
@alternate_dbus_interfaces({"org.example.Interface":
1533
"net.example.AlternateInterface"})
1534
class SampleDBusObject(dbus.service.Object):
1535
@dbus.service.method("org.example.Interface")
1536
def SampleDBusMethod():
1539
The above "SampleDBusMethod" on "SampleDBusObject" will be
1540
reachable via two interfaces: "org.example.Interface" and
1541
"net.example.AlternateInterface", the latter of which will have
1542
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1543
"true", unless "deprecate" is passed with a False value.
1545
This works for methods and signals, and also for D-Bus properties
1546
(from DBusObjectWithProperties) and interfaces (from the
1547
dbus_interface_annotations decorator).
1551
for orig_interface_name, alt_interface_name in (
1552
alt_interface_names.items()):
1554
interface_names = set()
1555
# Go though all attributes of the class
1556
for attrname, attribute in inspect.getmembers(cls):
1557
# Ignore non-D-Bus attributes, and D-Bus attributes
1558
# with the wrong interface name
1559
if (not hasattr(attribute, "_dbus_interface")
1560
or not attribute._dbus_interface.startswith(
1561
orig_interface_name)):
1563
# Create an alternate D-Bus interface name based on
1565
alt_interface = attribute._dbus_interface.replace(
1566
orig_interface_name, alt_interface_name)
1567
interface_names.add(alt_interface)
1568
# Is this a D-Bus signal?
1569
if getattr(attribute, "_dbus_is_signal", False):
1570
# Extract the original non-method undecorated
1571
# function by black magic
1572
if sys.version_info.major == 2:
1573
nonmethod_func = (dict(
1574
zip(attribute.func_code.co_freevars,
1575
attribute.__closure__))
1576
["func"].cell_contents)
1578
nonmethod_func = (dict(
1579
zip(attribute.__code__.co_freevars,
1580
attribute.__closure__))
1581
["func"].cell_contents)
1582
# Create a new, but exactly alike, function
1583
# object, and decorate it to be a new D-Bus signal
1584
# with the alternate D-Bus interface name
1585
new_function = copy_function(nonmethod_func)
1586
new_function = (dbus.service.signal(
1588
attribute._dbus_signature)(new_function))
1589
# Copy annotations, if any
1591
new_function._dbus_annotations = dict(
1592
attribute._dbus_annotations)
1593
except AttributeError:
1595
# Define a creator of a function to call both the
1596
# original and alternate functions, so both the
1597
# original and alternate signals gets sent when
1598
# the function is called
1599
def fixscope(func1, func2):
1600
"""This function is a scope container to pass
1601
func1 and func2 to the "call_both" function
1602
outside of its arguments"""
1604
@functools.wraps(func2)
1605
def call_both(*args, **kwargs):
1606
"""This function will emit two D-Bus
1607
signals by calling func1 and func2"""
1608
func1(*args, **kwargs)
1609
func2(*args, **kwargs)
1610
# Make wrapper function look like a D-Bus signal
1611
for name, attr in inspect.getmembers(func2):
1612
if name.startswith("_dbus_"):
1613
setattr(call_both, name, attr)
1616
# Create the "call_both" function and add it to
1618
attr[attrname] = fixscope(attribute, new_function)
1619
# Is this a D-Bus method?
1620
elif getattr(attribute, "_dbus_is_method", False):
1621
# Create a new, but exactly alike, function
1622
# object. Decorate it to be a new D-Bus method
1623
# with the alternate D-Bus interface name. Add it
1626
dbus.service.method(
1628
attribute._dbus_in_signature,
1629
attribute._dbus_out_signature)
1630
(copy_function(attribute)))
1631
# Copy annotations, if any
1633
attr[attrname]._dbus_annotations = dict(
1634
attribute._dbus_annotations)
1635
except AttributeError:
1637
# Is this a D-Bus property?
1638
elif getattr(attribute, "_dbus_is_property", False):
1639
# Create a new, but exactly alike, function
1640
# object, and decorate it to be a new D-Bus
1641
# property with the alternate D-Bus interface
1642
# name. Add it to the class.
1643
attr[attrname] = (dbus_service_property(
1644
alt_interface, attribute._dbus_signature,
1645
attribute._dbus_access,
1646
attribute._dbus_get_args_options
1648
(copy_function(attribute)))
1649
# Copy annotations, if any
1651
attr[attrname]._dbus_annotations = dict(
1652
attribute._dbus_annotations)
1653
except AttributeError:
1655
# Is this a D-Bus interface?
1656
elif getattr(attribute, "_dbus_is_interface", False):
1657
# Create a new, but exactly alike, function
1658
# object. Decorate it to be a new D-Bus interface
1659
# with the alternate D-Bus interface name. Add it
1662
dbus_interface_annotations(alt_interface)
1663
(copy_function(attribute)))
1665
# Deprecate all alternate interfaces
1666
iname="_AlternateDBusNames_interface_annotation{}"
1667
for interface_name in interface_names:
1669
@dbus_interface_annotations(interface_name)
1671
return { "org.freedesktop.DBus.Deprecated":
1673
# Find an unused name
1674
for aname in (iname.format(i)
1675
for i in itertools.count()):
1676
if aname not in attr:
1680
# Replace the class with a new subclass of it with
1681
# methods, signals, etc. as created above.
1682
if sys.version_info.major == 2:
1683
cls = type(b"{}Alternate".format(cls.__name__),
1686
cls = type("{}Alternate".format(cls.__name__),
1693
@alternate_dbus_interfaces({"se.recompile.Mandos":
1694
"se.bsnet.fukt.Mandos"})
740
1695
class ClientDBus(Client, DBusObjectWithProperties):
741
1696
"""A Client class using D-Bus
748
1703
runtime_expansions = (Client.runtime_expansions
749
+ ("dbus_object_path",))
1704
+ ("dbus_object_path", ))
1706
_interface = "se.recompile.Mandos.Client"
751
1708
# dbus.service.Object doesn't use super(), so we can't either.
753
1710
def __init__(self, bus = None, *args, **kwargs):
754
self._approvals_pending = 0
756
1712
Client.__init__(self, *args, **kwargs)
757
1713
# Only now, when this client is initialized, can it show up on
759
client_object_name = unicode(self.name).translate(
1715
client_object_name = str(self.name).translate(
760
1716
{ord("."): ord("_"),
761
1717
ord("-"): ord("_")})
762
self.dbus_object_path = (dbus.ObjectPath
763
("/clients/" + client_object_name))
1718
self.dbus_object_path = dbus.ObjectPath(
1719
"/clients/" + client_object_name)
764
1720
DBusObjectWithProperties.__init__(self, self.bus,
765
1721
self.dbus_object_path)
767
def _get_approvals_pending(self):
768
return self._approvals_pending
769
def _set_approvals_pending(self, value):
770
old_value = self._approvals_pending
771
self._approvals_pending = value
773
if (hasattr(self, "dbus_object_path")
774
and bval is not bool(old_value)):
775
dbus_bool = dbus.Boolean(bval, variant_level=1)
776
self.PropertyChanged(dbus.String("ApprovalPending"),
779
approvals_pending = property(_get_approvals_pending,
780
_set_approvals_pending)
781
del _get_approvals_pending, _set_approvals_pending
784
def _datetime_to_dbus(dt, variant_level=0):
785
"""Convert a UTC datetime.datetime() to a D-Bus type."""
786
return dbus.String(dt.isoformat(),
787
variant_level=variant_level)
790
oldstate = getattr(self, "enabled", False)
791
r = Client.enable(self)
792
if oldstate != self.enabled:
794
self.PropertyChanged(dbus.String("Enabled"),
795
dbus.Boolean(True, variant_level=1))
796
self.PropertyChanged(
797
dbus.String("LastEnabled"),
798
self._datetime_to_dbus(self.last_enabled,
802
def disable(self, quiet = False):
803
oldstate = getattr(self, "enabled", False)
804
r = Client.disable(self, quiet=quiet)
805
if not quiet and oldstate != self.enabled:
807
self.PropertyChanged(dbus.String("Enabled"),
808
dbus.Boolean(False, variant_level=1))
1723
def notifychangeproperty(transform_func, dbus_name,
1724
type_func=lambda x: x,
1726
invalidate_only=False,
1727
_interface=_interface):
1728
""" Modify a variable so that it's a property which announces
1729
its changes to DBus.
1731
transform_fun: Function that takes a value and a variant_level
1732
and transforms it to a D-Bus type.
1733
dbus_name: D-Bus name of the variable
1734
type_func: Function that transform the value before sending it
1735
to the D-Bus. Default: no transform
1736
variant_level: D-Bus variant level. Default: 1
1738
attrname = "_{}".format(dbus_name)
1740
def setter(self, value):
1741
if hasattr(self, "dbus_object_path"):
1742
if (not hasattr(self, attrname) or
1743
type_func(getattr(self, attrname, None))
1744
!= type_func(value)):
1746
self.PropertiesChanged(
1747
_interface, dbus.Dictionary(),
1748
dbus.Array((dbus_name, )))
1750
dbus_value = transform_func(
1752
variant_level = variant_level)
1753
self.PropertyChanged(dbus.String(dbus_name),
1755
self.PropertiesChanged(
1757
dbus.Dictionary({ dbus.String(dbus_name):
1760
setattr(self, attrname, value)
1762
return property(lambda self: getattr(self, attrname), setter)
1764
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1765
approvals_pending = notifychangeproperty(dbus.Boolean,
1768
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1769
last_enabled = notifychangeproperty(datetime_to_dbus,
1771
checker = notifychangeproperty(
1772
dbus.Boolean, "CheckerRunning",
1773
type_func = lambda checker: checker is not None)
1774
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1776
last_checker_status = notifychangeproperty(dbus.Int16,
1777
"LastCheckerStatus")
1778
last_approval_request = notifychangeproperty(
1779
datetime_to_dbus, "LastApprovalRequest")
1780
approved_by_default = notifychangeproperty(dbus.Boolean,
1781
"ApprovedByDefault")
1782
approval_delay = notifychangeproperty(
1783
dbus.UInt64, "ApprovalDelay",
1784
type_func = lambda td: td.total_seconds() * 1000)
1785
approval_duration = notifychangeproperty(
1786
dbus.UInt64, "ApprovalDuration",
1787
type_func = lambda td: td.total_seconds() * 1000)
1788
host = notifychangeproperty(dbus.String, "Host")
1789
timeout = notifychangeproperty(
1790
dbus.UInt64, "Timeout",
1791
type_func = lambda td: td.total_seconds() * 1000)
1792
extended_timeout = notifychangeproperty(
1793
dbus.UInt64, "ExtendedTimeout",
1794
type_func = lambda td: td.total_seconds() * 1000)
1795
interval = notifychangeproperty(
1796
dbus.UInt64, "Interval",
1797
type_func = lambda td: td.total_seconds() * 1000)
1798
checker_command = notifychangeproperty(dbus.String, "Checker")
1799
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1800
invalidate_only=True)
1802
del notifychangeproperty
811
1804
def __del__(self, *args, **kwargs):
817
1810
DBusObjectWithProperties.__del__(self, *args, **kwargs)
818
1811
Client.__del__(self, *args, **kwargs)
820
def checker_callback(self, pid, condition, command,
822
self.checker_callback_tag = None
825
self.PropertyChanged(dbus.String("CheckerRunning"),
826
dbus.Boolean(False, variant_level=1))
827
if os.WIFEXITED(condition):
828
exitstatus = os.WEXITSTATUS(condition)
1813
def checker_callback(self, source, condition,
1814
connection, command, *args, **kwargs):
1815
ret = Client.checker_callback(self, source, condition,
1816
connection, command, *args,
1818
exitstatus = self.last_checker_status
829
1820
# Emit D-Bus signal
830
1821
self.CheckerCompleted(dbus.Int16(exitstatus),
831
dbus.Int64(condition),
1822
# This is specific to GNU libC
1823
dbus.Int64(exitstatus << 8),
832
1824
dbus.String(command))
834
1826
# Emit D-Bus signal
835
1827
self.CheckerCompleted(dbus.Int16(-1),
836
dbus.Int64(condition),
1829
# This is specific to GNU libC
1831
| self.last_checker_signal),
837
1832
dbus.String(command))
839
return Client.checker_callback(self, pid, condition, command,
842
def checked_ok(self, *args, **kwargs):
843
Client.checked_ok(self, *args, **kwargs)
845
self.PropertyChanged(
846
dbus.String("LastCheckedOK"),
847
(self._datetime_to_dbus(self.last_checked_ok,
850
def need_approval(self, *args, **kwargs):
851
r = Client.need_approval(self, *args, **kwargs)
853
self.PropertyChanged(
854
dbus.String("LastApprovalRequest"),
855
(self._datetime_to_dbus(self.last_approval_request,
859
1835
def start_checker(self, *args, **kwargs):
860
old_checker = self.checker
861
if self.checker is not None:
862
old_checker_pid = self.checker.pid
864
old_checker_pid = None
1836
old_checker_pid = getattr(self.checker, "pid", None)
865
1837
r = Client.start_checker(self, *args, **kwargs)
866
1838
# Only if new checker process was started
867
1839
if (self.checker is not None
868
1840
and old_checker_pid != self.checker.pid):
869
1841
# Emit D-Bus signal
870
1842
self.CheckerStarted(self.current_checker_command)
871
self.PropertyChanged(
872
dbus.String("CheckerRunning"),
873
dbus.Boolean(True, variant_level=1))
876
def stop_checker(self, *args, **kwargs):
877
old_checker = getattr(self, "checker", None)
878
r = Client.stop_checker(self, *args, **kwargs)
879
if (old_checker is not None
880
and getattr(self, "checker", None) is None):
881
self.PropertyChanged(dbus.String("CheckerRunning"),
882
dbus.Boolean(False, variant_level=1))
885
1845
def _reset_approved(self):
886
self._approved = None
1846
self.approved = None
889
1849
def approve(self, value=True):
1850
self.approved = value
1851
GLib.timeout_add(int(self.approval_duration.total_seconds()
1852
* 1000), self._reset_approved)
890
1853
self.send_changedstate()
891
self._approved = value
892
gobject.timeout_add(self._timedelta_to_milliseconds
893
(self.approval_duration),
894
self._reset_approved)
897
1855
## D-Bus methods, signals & properties
898
_interface = "se.bsnet.fukt.Mandos.Client"
981
1945
return dbus.Boolean(bool(self.approvals_pending))
983
1947
# ApprovedByDefault - property
984
@dbus_service_property(_interface, signature="b",
1948
@dbus_service_property(_interface,
985
1950
access="readwrite")
986
1951
def ApprovedByDefault_dbus_property(self, value=None):
987
1952
if value is None: # get
988
1953
return dbus.Boolean(self.approved_by_default)
989
1954
self.approved_by_default = bool(value)
991
self.PropertyChanged(dbus.String("ApprovedByDefault"),
992
dbus.Boolean(value, variant_level=1))
994
1956
# ApprovalDelay - property
995
@dbus_service_property(_interface, signature="t",
1957
@dbus_service_property(_interface,
996
1959
access="readwrite")
997
1960
def ApprovalDelay_dbus_property(self, value=None):
998
1961
if value is None: # get
999
return dbus.UInt64(self.approval_delay_milliseconds())
1962
return dbus.UInt64(self.approval_delay.total_seconds()
1000
1964
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1002
self.PropertyChanged(dbus.String("ApprovalDelay"),
1003
dbus.UInt64(value, variant_level=1))
1005
1966
# ApprovalDuration - property
1006
@dbus_service_property(_interface, signature="t",
1967
@dbus_service_property(_interface,
1007
1969
access="readwrite")
1008
1970
def ApprovalDuration_dbus_property(self, value=None):
1009
1971
if value is None: # get
1010
return dbus.UInt64(self._timedelta_to_milliseconds(
1011
self.approval_duration))
1972
return dbus.UInt64(self.approval_duration.total_seconds()
1012
1974
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1014
self.PropertyChanged(dbus.String("ApprovalDuration"),
1015
dbus.UInt64(value, variant_level=1))
1017
1976
# Name - property
1978
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1018
1979
@dbus_service_property(_interface, signature="s", access="read")
1019
1980
def Name_dbus_property(self):
1020
1981
return dbus.String(self.name)
1022
1983
# Fingerprint - property
1985
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1023
1986
@dbus_service_property(_interface, signature="s", access="read")
1024
1987
def Fingerprint_dbus_property(self):
1025
1988
return dbus.String(self.fingerprint)
1027
1990
# Host - property
1028
@dbus_service_property(_interface, signature="s",
1991
@dbus_service_property(_interface,
1029
1993
access="readwrite")
1030
1994
def Host_dbus_property(self, value=None):
1031
1995
if value is None: # get
1032
1996
return dbus.String(self.host)
1035
self.PropertyChanged(dbus.String("Host"),
1036
dbus.String(value, variant_level=1))
1997
self.host = str(value)
1038
1999
# Created - property
2001
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1039
2002
@dbus_service_property(_interface, signature="s", access="read")
1040
2003
def Created_dbus_property(self):
1041
return dbus.String(self._datetime_to_dbus(self.created))
2004
return datetime_to_dbus(self.created)
1043
2006
# LastEnabled - property
1044
2007
@dbus_service_property(_interface, signature="s", access="read")
1045
2008
def LastEnabled_dbus_property(self):
1046
if self.last_enabled is None:
1047
return dbus.String("")
1048
return dbus.String(self._datetime_to_dbus(self.last_enabled))
2009
return datetime_to_dbus(self.last_enabled)
1050
2011
# Enabled - property
1051
@dbus_service_property(_interface, signature="b",
2012
@dbus_service_property(_interface,
1052
2014
access="readwrite")
1053
2015
def Enabled_dbus_property(self, value=None):
1054
2016
if value is None: # get
1061
2023
# LastCheckedOK - property
1062
@dbus_service_property(_interface, signature="s",
2024
@dbus_service_property(_interface,
1063
2026
access="readwrite")
1064
2027
def LastCheckedOK_dbus_property(self, value=None):
1065
2028
if value is not None:
1066
2029
self.checked_ok()
1068
if self.last_checked_ok is None:
1069
return dbus.String("")
1070
return dbus.String(self._datetime_to_dbus(self
2031
return datetime_to_dbus(self.last_checked_ok)
2033
# LastCheckerStatus - property
2034
@dbus_service_property(_interface, signature="n", access="read")
2035
def LastCheckerStatus_dbus_property(self):
2036
return dbus.Int16(self.last_checker_status)
2038
# Expires - property
2039
@dbus_service_property(_interface, signature="s", access="read")
2040
def Expires_dbus_property(self):
2041
return datetime_to_dbus(self.expires)
1073
2043
# LastApprovalRequest - property
1074
2044
@dbus_service_property(_interface, signature="s", access="read")
1075
2045
def LastApprovalRequest_dbus_property(self):
1076
if self.last_approval_request is None:
1077
return dbus.String("")
1078
return dbus.String(self.
1079
_datetime_to_dbus(self
1080
.last_approval_request))
2046
return datetime_to_dbus(self.last_approval_request)
1082
2048
# Timeout - property
1083
@dbus_service_property(_interface, signature="t",
2049
@dbus_service_property(_interface,
1084
2051
access="readwrite")
1085
2052
def Timeout_dbus_property(self, value=None):
1086
2053
if value is None: # get
1087
return dbus.UInt64(self.timeout_milliseconds())
2054
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2055
old_timeout = self.timeout
1088
2056
self.timeout = datetime.timedelta(0, 0, 0, value)
1090
self.PropertyChanged(dbus.String("Timeout"),
1091
dbus.UInt64(value, variant_level=1))
1092
if getattr(self, "disable_initiator_tag", None) is None:
1094
# Reschedule timeout
1095
gobject.source_remove(self.disable_initiator_tag)
1096
self.disable_initiator_tag = None
1097
time_to_die = (self.
1098
_timedelta_to_milliseconds((self
1103
if time_to_die <= 0:
1104
# The timeout has passed
1107
self.disable_initiator_tag = (gobject.timeout_add
1108
(time_to_die, self.disable))
2057
# Reschedule disabling
2059
now = datetime.datetime.utcnow()
2060
self.expires += self.timeout - old_timeout
2061
if self.expires <= now:
2062
# The timeout has passed
2065
if (getattr(self, "disable_initiator_tag", None)
2068
GLib.source_remove(self.disable_initiator_tag)
2069
self.disable_initiator_tag = GLib.timeout_add(
2070
int((self.expires - now).total_seconds() * 1000),
2073
# ExtendedTimeout - property
2074
@dbus_service_property(_interface,
2077
def ExtendedTimeout_dbus_property(self, value=None):
2078
if value is None: # get
2079
return dbus.UInt64(self.extended_timeout.total_seconds()
2081
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1110
2083
# Interval - property
1111
@dbus_service_property(_interface, signature="t",
2084
@dbus_service_property(_interface,
1112
2086
access="readwrite")
1113
2087
def Interval_dbus_property(self, value=None):
1114
2088
if value is None: # get
1115
return dbus.UInt64(self.interval_milliseconds())
2089
return dbus.UInt64(self.interval.total_seconds() * 1000)
1116
2090
self.interval = datetime.timedelta(0, 0, 0, value)
1118
self.PropertyChanged(dbus.String("Interval"),
1119
dbus.UInt64(value, variant_level=1))
1120
2091
if getattr(self, "checker_initiator_tag", None) is None:
1122
# Reschedule checker run
1123
gobject.source_remove(self.checker_initiator_tag)
1124
self.checker_initiator_tag = (gobject.timeout_add
1125
(value, self.start_checker))
1126
self.start_checker() # Start one now, too
2094
# Reschedule checker run
2095
GLib.source_remove(self.checker_initiator_tag)
2096
self.checker_initiator_tag = GLib.timeout_add(
2097
value, self.start_checker)
2098
self.start_checker() # Start one now, too
1128
2100
# Checker - property
1129
@dbus_service_property(_interface, signature="s",
2101
@dbus_service_property(_interface,
1130
2103
access="readwrite")
1131
2104
def Checker_dbus_property(self, value=None):
1132
2105
if value is None: # get
1133
2106
return dbus.String(self.checker_command)
1134
self.checker_command = value
1136
self.PropertyChanged(dbus.String("Checker"),
1137
dbus.String(self.checker_command,
2107
self.checker_command = str(value)
1140
2109
# CheckerRunning - property
1141
@dbus_service_property(_interface, signature="b",
2110
@dbus_service_property(_interface,
1142
2112
access="readwrite")
1143
2113
def CheckerRunning_dbus_property(self, value=None):
1144
2114
if value is None: # get
1367
2330
def fingerprint(openpgp):
1368
2331
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1369
2332
# New GnuTLS "datum" with the OpenPGP public key
1370
datum = (gnutls.library.types
1371
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1374
ctypes.c_uint(len(openpgp))))
2333
datum = gnutls.datum_t(
2334
ctypes.cast(ctypes.c_char_p(openpgp),
2335
ctypes.POINTER(ctypes.c_ubyte)),
2336
ctypes.c_uint(len(openpgp)))
1375
2337
# New empty GnuTLS certificate
1376
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1377
(gnutls.library.functions
1378
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2338
crt = gnutls.openpgp_crt_t()
2339
gnutls.openpgp_crt_init(ctypes.byref(crt))
1379
2340
# Import the OpenPGP public key into the certificate
1380
(gnutls.library.functions
1381
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1382
gnutls.library.constants
1383
.GNUTLS_OPENPGP_FMT_RAW))
2341
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2342
gnutls.OPENPGP_FMT_RAW)
1384
2343
# Verify the self signature in the key
1385
2344
crtverify = ctypes.c_uint()
1386
(gnutls.library.functions
1387
.gnutls_openpgp_crt_verify_self(crt, 0,
1388
ctypes.byref(crtverify)))
2345
gnutls.openpgp_crt_verify_self(crt, 0,
2346
ctypes.byref(crtverify))
1389
2347
if crtverify.value != 0:
1390
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1391
raise (gnutls.errors.CertificateSecurityError
2348
gnutls.openpgp_crt_deinit(crt)
2349
raise gnutls.CertificateSecurityError("Verify failed")
1393
2350
# New buffer for the fingerprint
1394
2351
buf = ctypes.create_string_buffer(20)
1395
2352
buf_len = ctypes.c_size_t()
1396
2353
# Get the fingerprint from the certificate into the buffer
1397
(gnutls.library.functions
1398
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1399
ctypes.byref(buf_len)))
2354
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2355
ctypes.byref(buf_len))
1400
2356
# Deinit the certificate
1401
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2357
gnutls.openpgp_crt_deinit(crt)
1402
2358
# Convert the buffer to a Python bytestring
1403
2359
fpr = ctypes.string_at(buf, buf_len.value)
1404
2360
# Convert the bytestring to hexadecimal notation
1405
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2361
hex_fpr = binascii.hexlify(fpr).upper()
1409
2365
class MultiprocessingMixIn(object):
1410
2366
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1411
2368
def sub_process_main(self, request, address):
1413
2370
self.finish_request(request, address)
1415
2372
self.handle_error(request, address)
1416
2373
self.close_request(request)
1418
2375
def process_request(self, request, address):
1419
2376
"""Start a new process to process the request."""
1420
multiprocessing.Process(target = self.sub_process_main,
1421
args = (request, address)).start()
2377
proc = multiprocessing.Process(target = self.sub_process_main,
2378
args = (request, address))
1423
2383
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1424
2384
""" adds a pipe to the MixIn """
1425
2386
def process_request(self, request, client_address):
1426
2387
"""Overrides and wraps the original process_request().
1428
2389
This function creates a new pipe in self.pipe
1430
2391
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1432
super(MultiprocessingMixInWithPipe,
1433
self).process_request(request, client_address)
2393
proc = MultiprocessingMixIn.process_request(self, request,
1434
2395
self.child_pipe.close()
1435
self.add_pipe(parent_pipe)
1437
def add_pipe(self, parent_pipe):
2396
self.add_pipe(parent_pipe, proc)
2398
def add_pipe(self, parent_pipe, proc):
1438
2399
"""Dummy function; override as necessary"""
1439
raise NotImplementedError
2400
raise NotImplementedError()
1441
2403
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1442
2404
socketserver.TCPServer, object):
1447
2409
interface: None or a network interface name (string)
1448
2410
use_ipv6: Boolean; to use IPv6 or not
1450
2413
def __init__(self, server_address, RequestHandlerClass,
1451
interface=None, use_ipv6=True):
2417
"""If socketfd is set, use that file descriptor instead of
2418
creating a new one with socket.socket().
1452
2420
self.interface = interface
1454
2422
self.address_family = socket.AF_INET6
2423
if socketfd is not None:
2424
# Save the file descriptor
2425
self.socketfd = socketfd
2426
# Save the original socket.socket() function
2427
self.socket_socket = socket.socket
2428
# To implement --socket, we monkey patch socket.socket.
2430
# (When socketserver.TCPServer is a new-style class, we
2431
# could make self.socket into a property instead of monkey
2432
# patching socket.socket.)
2434
# Create a one-time-only replacement for socket.socket()
2435
@functools.wraps(socket.socket)
2436
def socket_wrapper(*args, **kwargs):
2437
# Restore original function so subsequent calls are
2439
socket.socket = self.socket_socket
2440
del self.socket_socket
2441
# This time only, return a new socket object from the
2442
# saved file descriptor.
2443
return socket.fromfd(self.socketfd, *args, **kwargs)
2444
# Replace socket.socket() function with wrapper
2445
socket.socket = socket_wrapper
2446
# The socketserver.TCPServer.__init__ will call
2447
# socket.socket(), which might be our replacement,
2448
# socket_wrapper(), if socketfd was set.
1455
2449
socketserver.TCPServer.__init__(self, server_address,
1456
2450
RequestHandlerClass)
1457
2452
def server_bind(self):
1458
2453
"""This overrides the normal server_bind() function
1459
2454
to bind to an interface if one was specified, and also NOT to
1460
2455
bind to an address or port if they were not specified."""
1461
2456
if self.interface is not None:
1462
2457
if SO_BINDTODEVICE is None:
1463
logger.error("SO_BINDTODEVICE does not exist;"
1464
" cannot bind to interface %s",
1468
self.socket.setsockopt(socket.SOL_SOCKET,
1472
except socket.error as error:
1473
if error[0] == errno.EPERM:
1474
logger.error("No permission to"
1475
" bind to interface %s",
1477
elif error[0] == errno.ENOPROTOOPT:
1478
logger.error("SO_BINDTODEVICE not available;"
1479
" cannot bind to interface %s",
2458
# Fall back to a hard-coded value which seems to be
2460
logger.warning("SO_BINDTODEVICE not found, trying 25")
2461
SO_BINDTODEVICE = 25
2463
self.socket.setsockopt(
2464
socket.SOL_SOCKET, SO_BINDTODEVICE,
2465
(self.interface + "\0").encode("utf-8"))
2466
except socket.error as error:
2467
if error.errno == errno.EPERM:
2468
logger.error("No permission to bind to"
2469
" interface %s", self.interface)
2470
elif error.errno == errno.ENOPROTOOPT:
2471
logger.error("SO_BINDTODEVICE not available;"
2472
" cannot bind to interface %s",
2474
elif error.errno == errno.ENODEV:
2475
logger.error("Interface %s does not exist,"
2476
" cannot bind", self.interface)
1483
2479
# Only bind(2) the socket if we really need to.
1484
2480
if self.server_address[0] or self.server_address[1]:
1485
2481
if not self.server_address[0]:
1486
2482
if self.address_family == socket.AF_INET6:
1487
2483
any_address = "::" # in6addr_any
1489
any_address = socket.INADDR_ANY
2485
any_address = "0.0.0.0" # INADDR_ANY
1490
2486
self.server_address = (any_address,
1491
2487
self.server_address[1])
1492
2488
elif not self.server_address[1]:
1493
self.server_address = (self.server_address[0],
2489
self.server_address = (self.server_address[0], 0)
1495
2490
# if self.interface:
1496
2491
# self.server_address = (self.server_address[0],
1509
2504
gnutls_priority GnuTLS priority string
1510
2505
use_dbus: Boolean; to emit D-Bus signals or not
1512
Assumes a gobject.MainLoop event loop.
2507
Assumes a GLib.MainLoop event loop.
1514
2510
def __init__(self, server_address, RequestHandlerClass,
1515
interface=None, use_ipv6=True, clients=None,
1516
gnutls_priority=None, use_dbus=True):
2514
gnutls_priority=None,
1517
2517
self.enabled = False
1518
2518
self.clients = clients
1519
2519
if self.clients is None:
1520
self.clients = set()
1521
2521
self.use_dbus = use_dbus
1522
2522
self.gnutls_priority = gnutls_priority
1523
2523
IPv6_TCPServer.__init__(self, server_address,
1524
2524
RequestHandlerClass,
1525
2525
interface = interface,
1526
use_ipv6 = use_ipv6)
2526
use_ipv6 = use_ipv6,
2527
socketfd = socketfd)
1527
2529
def server_activate(self):
1528
2530
if self.enabled:
1529
2531
return socketserver.TCPServer.server_activate(self)
1530
2533
def enable(self):
1531
2534
self.enabled = True
1532
def add_pipe(self, parent_pipe):
2536
def add_pipe(self, parent_pipe, proc):
1533
2537
# Call "handle_ipc" for both data and EOF events
1534
gobject.io_add_watch(parent_pipe.fileno(),
1535
gobject.IO_IN | gobject.IO_HUP,
1536
functools.partial(self.handle_ipc,
1537
parent_pipe = parent_pipe))
1539
def handle_ipc(self, source, condition, parent_pipe=None,
2539
parent_pipe.fileno(),
2540
GLib.IO_IN | GLib.IO_HUP,
2541
functools.partial(self.handle_ipc,
2542
parent_pipe = parent_pipe,
2545
def handle_ipc(self, source, condition,
1540
2548
client_object=None):
1542
gobject.IO_IN: "IN", # There is data to read.
1543
gobject.IO_OUT: "OUT", # Data can be written (without
1545
gobject.IO_PRI: "PRI", # There is urgent data to read.
1546
gobject.IO_ERR: "ERR", # Error condition.
1547
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1548
# broken, usually for pipes and
1551
conditions_string = ' | '.join(name
1553
condition_names.iteritems()
1554
if cond & condition)
1555
# error or the other end of multiprocessing.Pipe has closed
1556
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2549
# error, or the other end of multiprocessing.Pipe has closed
2550
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2551
# Wait for other process to exit
1559
2555
# Read a request from the child
1564
2560
fpr = request[1]
1565
2561
address = request[2]
1567
for c in self.clients:
2563
for c in self.clients.values():
1568
2564
if c.fingerprint == fpr:
1572
logger.warning("Client not found for fingerprint: %s, ad"
1573
"dress: %s", fpr, address)
2568
logger.info("Client not found for fingerprint: %s, ad"
2569
"dress: %s", fpr, address)
1574
2570
if self.use_dbus:
1575
2571
# Emit D-Bus signal
1576
mandos_dbus_service.ClientNotFound(fpr, address[0])
2572
mandos_dbus_service.ClientNotFound(fpr,
1577
2574
parent_pipe.send(False)
1580
gobject.io_add_watch(parent_pipe.fileno(),
1581
gobject.IO_IN | gobject.IO_HUP,
1582
functools.partial(self.handle_ipc,
1583
parent_pipe = parent_pipe,
1584
client_object = client))
2578
parent_pipe.fileno(),
2579
GLib.IO_IN | GLib.IO_HUP,
2580
functools.partial(self.handle_ipc,
2581
parent_pipe = parent_pipe,
2583
client_object = client))
1585
2584
parent_pipe.send(True)
1586
# remove the old hook in favor of the new above hook on same fileno
2585
# remove the old hook in favor of the new above hook on
1588
2588
if command == 'funcall':
1589
2589
funcname = request[1]
1590
2590
args = request[2]
1591
2591
kwargs = request[3]
1593
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2593
parent_pipe.send(('data', getattr(client_object,
1595
2597
if command == 'getattr':
1596
2598
attrname = request[1]
1597
if callable(client_object.__getattribute__(attrname)):
1598
parent_pipe.send(('function',))
2599
if isinstance(client_object.__getattribute__(attrname),
2600
collections.Callable):
2601
parent_pipe.send(('function', ))
1600
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2604
'data', client_object.__getattribute__(attrname)))
1602
2606
if command == 'setattr':
1603
2607
attrname = request[1]
1604
2608
value = request[2]
1605
2609
setattr(client_object, attrname, value)
2614
def rfc3339_duration_to_delta(duration):
2615
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2617
>>> rfc3339_duration_to_delta("P7D")
2618
datetime.timedelta(7)
2619
>>> rfc3339_duration_to_delta("PT60S")
2620
datetime.timedelta(0, 60)
2621
>>> rfc3339_duration_to_delta("PT60M")
2622
datetime.timedelta(0, 3600)
2623
>>> rfc3339_duration_to_delta("PT24H")
2624
datetime.timedelta(1)
2625
>>> rfc3339_duration_to_delta("P1W")
2626
datetime.timedelta(7)
2627
>>> rfc3339_duration_to_delta("PT5M30S")
2628
datetime.timedelta(0, 330)
2629
>>> rfc3339_duration_to_delta("P1DT3M20S")
2630
datetime.timedelta(1, 200)
2633
# Parsing an RFC 3339 duration with regular expressions is not
2634
# possible - there would have to be multiple places for the same
2635
# values, like seconds. The current code, while more esoteric, is
2636
# cleaner without depending on a parsing library. If Python had a
2637
# built-in library for parsing we would use it, but we'd like to
2638
# avoid excessive use of external libraries.
2640
# New type for defining tokens, syntax, and semantics all-in-one
2641
Token = collections.namedtuple("Token", (
2642
"regexp", # To match token; if "value" is not None, must have
2643
# a "group" containing digits
2644
"value", # datetime.timedelta or None
2645
"followers")) # Tokens valid after this token
2646
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2647
# the "duration" ABNF definition in RFC 3339, Appendix A.
2648
token_end = Token(re.compile(r"$"), None, frozenset())
2649
token_second = Token(re.compile(r"(\d+)S"),
2650
datetime.timedelta(seconds=1),
2651
frozenset((token_end, )))
2652
token_minute = Token(re.compile(r"(\d+)M"),
2653
datetime.timedelta(minutes=1),
2654
frozenset((token_second, token_end)))
2655
token_hour = Token(re.compile(r"(\d+)H"),
2656
datetime.timedelta(hours=1),
2657
frozenset((token_minute, token_end)))
2658
token_time = Token(re.compile(r"T"),
2660
frozenset((token_hour, token_minute,
2662
token_day = Token(re.compile(r"(\d+)D"),
2663
datetime.timedelta(days=1),
2664
frozenset((token_time, token_end)))
2665
token_month = Token(re.compile(r"(\d+)M"),
2666
datetime.timedelta(weeks=4),
2667
frozenset((token_day, token_end)))
2668
token_year = Token(re.compile(r"(\d+)Y"),
2669
datetime.timedelta(weeks=52),
2670
frozenset((token_month, token_end)))
2671
token_week = Token(re.compile(r"(\d+)W"),
2672
datetime.timedelta(weeks=1),
2673
frozenset((token_end, )))
2674
token_duration = Token(re.compile(r"P"), None,
2675
frozenset((token_year, token_month,
2676
token_day, token_time,
2678
# Define starting values
2679
value = datetime.timedelta() # Value so far
2681
followers = frozenset((token_duration, )) # Following valid tokens
2682
s = duration # String left to parse
2683
# Loop until end token is found
2684
while found_token is not token_end:
2685
# Search for any currently valid tokens
2686
for token in followers:
2687
match = token.regexp.match(s)
2688
if match is not None:
2690
if token.value is not None:
2691
# Value found, parse digits
2692
factor = int(match.group(1), 10)
2693
# Add to value so far
2694
value += factor * token.value
2695
# Strip token from string
2696
s = token.regexp.sub("", s, 1)
2699
# Set valid next tokens
2700
followers = found_token.followers
2703
# No currently valid tokens were found
2704
raise ValueError("Invalid RFC 3339 duration: {!r}"
1610
2710
def string_to_delta(interval):
1611
2711
"""Parse a string and return a datetime.timedelta
1744
2841
"debug": "False",
1746
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2843
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2844
":+SIGN-DSA-SHA256",
1747
2845
"servicename": "Mandos",
1748
2846
"use_dbus": "True",
1749
2847
"use_ipv6": "True",
1750
2848
"debuglevel": "",
2851
"statedir": "/var/lib/mandos",
2852
"foreground": "False",
1753
2856
# Parse config file for server-global settings
1754
2857
server_config = configparser.SafeConfigParser(server_defaults)
1755
2858
del server_defaults
1756
server_config.read(os.path.join(options.configdir,
2859
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1758
2860
# Convert the SafeConfigParser object to a dict
1759
2861
server_settings = server_config.defaults()
1760
2862
# Use the appropriate methods on the non-string config options
1761
for option in ("debug", "use_dbus", "use_ipv6"):
2863
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1762
2864
server_settings[option] = server_config.getboolean("DEFAULT",
1764
2866
if server_settings["port"]:
1765
2867
server_settings["port"] = server_config.getint("DEFAULT",
2869
if server_settings["socket"]:
2870
server_settings["socket"] = server_config.getint("DEFAULT",
2872
# Later, stdin will, and stdout and stderr might, be dup'ed
2873
# over with an opened os.devnull. But we don't want this to
2874
# happen with a supplied network socket.
2875
if 0 <= server_settings["socket"] <= 2:
2876
server_settings["socket"] = os.dup(server_settings
1767
2878
del server_config
1769
2880
# Override the settings from the config file with command line
1770
2881
# options, if set.
1771
2882
for option in ("interface", "address", "port", "debug",
1772
"priority", "servicename", "configdir",
1773
"use_dbus", "use_ipv6", "debuglevel"):
2883
"priority", "servicename", "configdir", "use_dbus",
2884
"use_ipv6", "debuglevel", "restore", "statedir",
2885
"socket", "foreground", "zeroconf"):
1774
2886
value = getattr(options, option)
1775
2887
if value is not None:
1776
2888
server_settings[option] = value
1778
2890
# Force all strings to be unicode
1779
2891
for option in server_settings.keys():
1780
if type(server_settings[option]) is str:
1781
server_settings[option] = unicode(server_settings[option])
2892
if isinstance(server_settings[option], bytes):
2893
server_settings[option] = (server_settings[option]
2895
# Force all boolean options to be boolean
2896
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2897
"foreground", "zeroconf"):
2898
server_settings[option] = bool(server_settings[option])
2899
# Debug implies foreground
2900
if server_settings["debug"]:
2901
server_settings["foreground"] = True
1782
2902
# Now we have our good server settings in "server_settings"
1784
2904
##################################################################
2906
if (not server_settings["zeroconf"]
2907
and not (server_settings["port"]
2908
or server_settings["socket"] != "")):
2909
parser.error("Needs port or socket to work without Zeroconf")
1786
2911
# For convenience
1787
2912
debug = server_settings["debug"]
1788
2913
debuglevel = server_settings["debuglevel"]
1789
2914
use_dbus = server_settings["use_dbus"]
1790
2915
use_ipv6 = server_settings["use_ipv6"]
2916
stored_state_path = os.path.join(server_settings["statedir"],
2918
foreground = server_settings["foreground"]
2919
zeroconf = server_settings["zeroconf"]
2922
initlogger(debug, logging.DEBUG)
2927
level = getattr(logging, debuglevel.upper())
2928
initlogger(debug, level)
1792
2930
if server_settings["servicename"] != "Mandos":
1793
syslogger.setFormatter(logging.Formatter
1794
('Mandos (%s) [%%(process)d]:'
1795
' %%(levelname)s: %%(message)s'
1796
% server_settings["servicename"]))
2931
syslogger.setFormatter(
2932
logging.Formatter('Mandos ({}) [%(process)d]:'
2933
' %(levelname)s: %(message)s'.format(
2934
server_settings["servicename"])))
1798
2936
# Parse config file with clients
1799
client_defaults = { "timeout": "1h",
1801
"checker": "fping -q -- %%(host)s",
1803
"approval_delay": "0s",
1804
"approval_duration": "1s",
1806
client_config = configparser.SafeConfigParser(client_defaults)
2937
client_config = configparser.SafeConfigParser(Client
1807
2939
client_config.read(os.path.join(server_settings["configdir"],
1808
2940
"clients.conf"))
1810
2942
global mandos_dbus_service
1811
2943
mandos_dbus_service = None
1813
tcp_server = MandosServer((server_settings["address"],
1814
server_settings["port"]),
1816
interface=(server_settings["interface"]
1820
server_settings["priority"],
1823
pidfilename = "/var/run/mandos.pid"
2946
if server_settings["socket"] != "":
2947
socketfd = server_settings["socket"]
2948
tcp_server = MandosServer(
2949
(server_settings["address"], server_settings["port"]),
2951
interface=(server_settings["interface"] or None),
2953
gnutls_priority=server_settings["priority"],
2957
pidfilename = "/run/mandos.pid"
2958
if not os.path.isdir("/run/."):
2959
pidfilename = "/var/run/mandos.pid"
1825
pidfile = open(pidfilename, "w")
1827
logger.error("Could not open file %r", pidfilename)
2962
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2963
except IOError as e:
2964
logger.error("Could not open file %r", pidfilename,
1830
uid = pwd.getpwnam("_mandos").pw_uid
1831
gid = pwd.getpwnam("_mandos").pw_gid
2967
for name, group in (("_mandos", "_mandos"),
2968
("mandos", "mandos"),
2969
("nobody", "nogroup")):
1834
uid = pwd.getpwnam("mandos").pw_uid
1835
gid = pwd.getpwnam("mandos").pw_gid
2971
uid = pwd.getpwnam(name).pw_uid
2972
gid = pwd.getpwnam(group).pw_gid
1836
2974
except KeyError:
1838
uid = pwd.getpwnam("nobody").pw_uid
1839
gid = pwd.getpwnam("nobody").pw_gid
2983
logger.debug("Did setuid/setgid to {}:{}".format(uid,
1846
2985
except OSError as error:
1847
if error[0] != errno.EPERM:
2986
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2987
.format(uid, gid, os.strerror(error.errno)))
2988
if error.errno != errno.EPERM:
1850
if not debug and not debuglevel:
1851
syslogger.setLevel(logging.WARNING)
1852
console.setLevel(logging.WARNING)
1854
level = getattr(logging, debuglevel.upper())
1855
syslogger.setLevel(level)
1856
console.setLevel(level)
1859
2992
# Enable all possible GnuTLS debugging
1861
2994
# "Use a log level over 10 to enable all debugging options."
1862
2995
# - GnuTLS manual
1863
gnutls.library.functions.gnutls_global_set_log_level(11)
2996
gnutls.global_set_log_level(11)
1865
@gnutls.library.types.gnutls_log_func
1866
2999
def debug_gnutls(level, string):
1867
3000
logger.debug("GnuTLS: %s", string[:-1])
1869
(gnutls.library.functions
1870
.gnutls_global_set_log_function(debug_gnutls))
3002
gnutls.global_set_log_function(debug_gnutls)
1872
3004
# Redirect stdin so all checkers get /dev/null
1873
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3005
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1874
3006
os.dup2(null, sys.stdin.fileno())
1878
# No console logging
1879
logger.removeHandler(console)
1881
3010
# Need to fork before connecting to D-Bus
1883
3012
# Close all input and output, do double fork, etc.
3015
# multiprocessing will use threads, so before we use GLib we need
3016
# to inform GLib that threads will be used.
1886
3019
global main_loop
1887
3020
# From the Avahi example code
1888
DBusGMainLoop(set_as_default=True )
1889
main_loop = gobject.MainLoop()
3021
DBusGMainLoop(set_as_default=True)
3022
main_loop = GLib.MainLoop()
1890
3023
bus = dbus.SystemBus()
1891
3024
# End of Avahi example code
1894
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1895
bus, do_not_queue=True)
1896
except dbus.exceptions.NameExistsException as e:
1897
logger.error(unicode(e) + ", disabling D-Bus")
3027
bus_name = dbus.service.BusName("se.recompile.Mandos",
3030
old_bus_name = dbus.service.BusName(
3031
"se.bsnet.fukt.Mandos", bus,
3033
except dbus.exceptions.DBusException as e:
3034
logger.error("Disabling D-Bus:", exc_info=e)
1898
3035
use_dbus = False
1899
3036
server_settings["use_dbus"] = False
1900
3037
tcp_server.use_dbus = False
1901
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1902
service = AvahiService(name = server_settings["servicename"],
1903
servicetype = "_mandos._tcp",
1904
protocol = protocol, bus = bus)
1905
if server_settings["interface"]:
1906
service.interface = (if_nametoindex
1907
(str(server_settings["interface"])))
3039
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3040
service = AvahiServiceToSyslog(
3041
name = server_settings["servicename"],
3042
servicetype = "_mandos._tcp",
3043
protocol = protocol,
3045
if server_settings["interface"]:
3046
service.interface = if_nametoindex(
3047
server_settings["interface"].encode("utf-8"))
1909
3049
global multiprocessing_manager
1910
3050
multiprocessing_manager = multiprocessing.Manager()
1912
3052
client_class = Client
1914
3054
client_class = functools.partial(ClientDBus, bus = bus)
1915
def client_config_items(config, section):
1916
special_settings = {
1917
"approved_by_default":
1918
lambda: config.getboolean(section,
1919
"approved_by_default"),
1921
for name, value in config.items(section):
3056
client_settings = Client.config_parser(client_config)
3057
old_client_settings = {}
3060
# This is used to redirect stdout and stderr for checker processes
3062
wnull = open(os.devnull, "w") # A writable /dev/null
3063
# Only used if server is running in foreground but not in debug
3065
if debug or not foreground:
3068
# Get client data and settings from last running state.
3069
if server_settings["restore"]:
3071
with open(stored_state_path, "rb") as stored_state:
3072
if sys.version_info.major == 2:
3073
clients_data, old_client_settings = pickle.load(
3076
bytes_clients_data, bytes_old_client_settings = (
3077
pickle.load(stored_state, encoding = "bytes"))
3078
### Fix bytes to strings
3081
clients_data = { (key.decode("utf-8")
3082
if isinstance(key, bytes)
3085
bytes_clients_data.items() }
3086
del bytes_clients_data
3087
for key in clients_data:
3088
value = { (k.decode("utf-8")
3089
if isinstance(k, bytes) else k): v
3091
clients_data[key].items() }
3092
clients_data[key] = value
3094
value["client_structure"] = [
3096
if isinstance(s, bytes)
3098
value["client_structure"] ]
3100
for k in ("name", "host"):
3101
if isinstance(value[k], bytes):
3102
value[k] = value[k].decode("utf-8")
3103
## old_client_settings
3105
old_client_settings = {
3106
(key.decode("utf-8")
3107
if isinstance(key, bytes)
3110
bytes_old_client_settings.items() }
3111
del bytes_old_client_settings
3113
for value in old_client_settings.values():
3114
if isinstance(value["host"], bytes):
3115
value["host"] = (value["host"]
3117
os.remove(stored_state_path)
3118
except IOError as e:
3119
if e.errno == errno.ENOENT:
3120
logger.warning("Could not load persistent state:"
3121
" {}".format(os.strerror(e.errno)))
3123
logger.critical("Could not load persistent state:",
3126
except EOFError as e:
3127
logger.warning("Could not load persistent state: "
3131
with PGPEngine() as pgp:
3132
for client_name, client in clients_data.items():
3133
# Skip removed clients
3134
if client_name not in client_settings:
3137
# Decide which value to use after restoring saved state.
3138
# We have three different values: Old config file,
3139
# new config file, and saved state.
3140
# New config value takes precedence if it differs from old
3141
# config value, otherwise use saved state.
3142
for name, value in client_settings[client_name].items():
3144
# For each value in new config, check if it
3145
# differs from the old config value (Except for
3146
# the "secret" attribute)
3147
if (name != "secret"
3149
old_client_settings[client_name][name])):
3150
client[name] = value
3154
# Clients who has passed its expire date can still be
3155
# enabled if its last checker was successful. A Client
3156
# whose checker succeeded before we stored its state is
3157
# assumed to have successfully run all checkers during
3159
if client["enabled"]:
3160
if datetime.datetime.utcnow() >= client["expires"]:
3161
if not client["last_checked_ok"]:
3163
"disabling client {} - Client never "
3164
"performed a successful checker".format(
3166
client["enabled"] = False
3167
elif client["last_checker_status"] != 0:
3169
"disabling client {} - Client last"
3170
" checker failed with error code"
3173
client["last_checker_status"]))
3174
client["enabled"] = False
3176
client["expires"] = (
3177
datetime.datetime.utcnow()
3178
+ client["timeout"])
3179
logger.debug("Last checker succeeded,"
3180
" keeping {} enabled".format(
1923
yield (name, special_settings[name]())
1927
tcp_server.clients.update(set(
1928
client_class(name = section,
1929
config= dict(client_config_items(
1930
client_config, section)))
1931
for section in client_config.sections()))
3183
client["secret"] = pgp.decrypt(
3184
client["encrypted_secret"],
3185
client_settings[client_name]["secret"])
3187
# If decryption fails, we use secret from new settings
3188
logger.debug("Failed to decrypt {} old secret".format(
3190
client["secret"] = (client_settings[client_name]
3193
# Add/remove clients based on new changes made to config
3194
for client_name in (set(old_client_settings)
3195
- set(client_settings)):
3196
del clients_data[client_name]
3197
for client_name in (set(client_settings)
3198
- set(old_client_settings)):
3199
clients_data[client_name] = client_settings[client_name]
3201
# Create all client objects
3202
for client_name, client in clients_data.items():
3203
tcp_server.clients[client_name] = client_class(
3206
server_settings = server_settings)
1932
3208
if not tcp_server.clients:
1933
3209
logger.warning("No clients defined")
1939
pidfile.write(str(pid) + "\n".encode("utf-8"))
1942
logger.error("Could not write to file %r with PID %d",
1945
# "pidfile" was never created
3212
if pidfile is not None:
3216
print(pid, file=pidfile)
3218
logger.error("Could not write to file %r with PID %d",
1947
3221
del pidfilename
3223
for termsig in (signal.SIGHUP, signal.SIGTERM):
3224
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3225
lambda: main_loop.quit() and False)
1949
signal.signal(signal.SIGINT, signal.SIG_IGN)
1951
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1952
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1955
class MandosDBusService(dbus.service.Object):
3229
@alternate_dbus_interfaces(
3230
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3231
class MandosDBusService(DBusObjectWithObjectManager):
1956
3232
"""A D-Bus proxy object"""
1957
3234
def __init__(self):
1958
3235
dbus.service.Object.__init__(self, bus, "/")
1959
_interface = "se.bsnet.fukt.Mandos"
3237
_interface = "se.recompile.Mandos"
1961
3239
@dbus.service.signal(_interface, signature="o")
1962
3240
def ClientAdded(self, objpath):
3249
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
1971
3251
@dbus.service.signal(_interface, signature="os")
1972
3252
def ClientRemoved(self, objpath, name):
3256
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
1976
3258
@dbus.service.method(_interface, out_signature="ao")
1977
3259
def GetAllClients(self):
1979
return dbus.Array(c.dbus_object_path
1980
for c in tcp_server.clients)
3261
return dbus.Array(c.dbus_object_path for c in
3262
tcp_server.clients.values())
3264
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
1982
3266
@dbus.service.method(_interface,
1983
3267
out_signature="a{oa{sv}}")
1984
3268
def GetAllClientsWithProperties(self):
1986
3270
return dbus.Dictionary(
1987
((c.dbus_object_path, c.GetAll(""))
1988
for c in tcp_server.clients),
3271
{ c.dbus_object_path: c.GetAll(
3272
"se.recompile.Mandos.Client")
3273
for c in tcp_server.clients.values() },
1989
3274
signature="oa{sv}")
1991
3276
@dbus.service.method(_interface, in_signature="o")
1992
3277
def RemoveClient(self, object_path):
1994
for c in tcp_server.clients:
3279
for c in tcp_server.clients.values():
1995
3280
if c.dbus_object_path == object_path:
1996
tcp_server.clients.remove(c)
3281
del tcp_server.clients[c.name]
1997
3282
c.remove_from_connection()
1998
# Don't signal anything except ClientRemoved
3283
# Don't signal the disabling
1999
3284
c.disable(quiet=True)
2001
self.ClientRemoved(object_path, c.name)
3285
# Emit D-Bus signal for removal
3286
self.client_removed_signal(c)
2003
3288
raise KeyError(object_path)
3292
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3293
out_signature = "a{oa{sa{sv}}}")
3294
def GetManagedObjects(self):
3296
return dbus.Dictionary(
3297
{ client.dbus_object_path:
3299
{ interface: client.GetAll(interface)
3301
client._get_all_interface_names()})
3302
for client in tcp_server.clients.values()})
3304
def client_added_signal(self, client):
3305
"""Send the new standard signal and the old signal"""
3307
# New standard signal
3308
self.InterfacesAdded(
3309
client.dbus_object_path,
3311
{ interface: client.GetAll(interface)
3313
client._get_all_interface_names()}))
3315
self.ClientAdded(client.dbus_object_path)
3317
def client_removed_signal(self, client):
3318
"""Send the new standard signal and the old signal"""
3320
# New standard signal
3321
self.InterfacesRemoved(
3322
client.dbus_object_path,
3323
client._get_all_interface_names())
3325
self.ClientRemoved(client.dbus_object_path,
2007
3328
mandos_dbus_service = MandosDBusService()
3330
# Save modules to variables to exempt the modules from being
3331
# unloaded before the function registered with atexit() is run.
3332
mp = multiprocessing
2010
3335
"Cleanup function; run on exit"
3339
mp.active_children()
3341
if not (tcp_server.clients or client_settings):
3344
# Store client before exiting. Secrets are encrypted with key
3345
# based on what config file has. If config file is
3346
# removed/edited, old secret will thus be unrecovable.
3348
with PGPEngine() as pgp:
3349
for client in tcp_server.clients.values():
3350
key = client_settings[client.name]["secret"]
3351
client.encrypted_secret = pgp.encrypt(client.secret,
3355
# A list of attributes that can not be pickled
3357
exclude = { "bus", "changedstate", "secret",
3358
"checker", "server_settings" }
3359
for name, typ in inspect.getmembers(dbus.service
3363
client_dict["encrypted_secret"] = (client
3365
for attr in client.client_structure:
3366
if attr not in exclude:
3367
client_dict[attr] = getattr(client, attr)
3369
clients[client.name] = client_dict
3370
del client_settings[client.name]["secret"]
3373
with tempfile.NamedTemporaryFile(
3377
dir=os.path.dirname(stored_state_path),
3378
delete=False) as stored_state:
3379
pickle.dump((clients, client_settings), stored_state,
3381
tempname = stored_state.name
3382
os.rename(tempname, stored_state_path)
3383
except (IOError, OSError) as e:
3389
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3390
logger.warning("Could not save persistent state: {}"
3391
.format(os.strerror(e.errno)))
3393
logger.warning("Could not save persistent state:",
3397
# Delete all clients, and settings from config
2013
3398
while tcp_server.clients:
2014
client = tcp_server.clients.pop()
3399
name, client = tcp_server.clients.popitem()
2016
3401
client.remove_from_connection()
2017
client.disable_hook = None
2018
# Don't signal anything except ClientRemoved
3402
# Don't signal the disabling
2019
3403
client.disable(quiet=True)
3404
# Emit D-Bus signal for removal
2022
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
3406
mandos_dbus_service.client_removed_signal(client)
3407
client_settings.clear()
2025
3409
atexit.register(cleanup)
2027
for client in tcp_server.clients:
3411
for client in tcp_server.clients.values():
2030
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3413
# Emit D-Bus signal for adding
3414
mandos_dbus_service.client_added_signal(client)
3415
# Need to initiate checking of clients
3417
client.init_checker()
2033
3419
tcp_server.enable()
2034
3420
tcp_server.server_activate()
2036
3422
# Find out what port we got
2037
service.port = tcp_server.socket.getsockname()[1]
3424
service.port = tcp_server.socket.getsockname()[1]
2039
3426
logger.info("Now listening on address %r, port %d,"
2040
" flowinfo %d, scope_id %d"
2041
% tcp_server.socket.getsockname())
3427
" flowinfo %d, scope_id %d",
3428
*tcp_server.socket.getsockname())
2043
logger.info("Now listening on address %r, port %d"
2044
% tcp_server.socket.getsockname())
3430
logger.info("Now listening on address %r, port %d",
3431
*tcp_server.socket.getsockname())
2046
3433
#service.interface = tcp_server.socket.getsockname()[3]
2049
# From the Avahi example code
2052
except dbus.exceptions.DBusException as error:
2053
logger.critical("DBusException: %s", error)
2056
# End of Avahi example code
3437
# From the Avahi example code
3440
except dbus.exceptions.DBusException as error:
3441
logger.critical("D-Bus Exception", exc_info=error)
3444
# End of Avahi example code
2058
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2059
lambda *args, **kwargs:
2060
(tcp_server.handle_request
2061
(*args[2:], **kwargs) or True))
3446
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3447
lambda *args, **kwargs:
3448
(tcp_server.handle_request
3449
(*args[2:], **kwargs) or True))
2063
3451
logger.debug("Starting main loop")
2064
3452
main_loop.run()
2065
3453
except AvahiError as error:
2066
logger.critical("AvahiError: %s", error)
3454
logger.critical("Avahi Error", exc_info=error)
2069
3457
except KeyboardInterrupt: