63
import cPickle as pickle
70
import cPickle as pickle
64
73
import multiprocessing
68
82
import dbus.service
83
from gi.repository import GLib
71
84
from dbus.mainloop.glib import DBusGMainLoop
74
87
import xml.dom.minidom
90
# Try to find the value of SO_BINDTODEVICE:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
78
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
79
95
except AttributeError:
97
# This is where SO_BINDTODEVICE was up to and including Python
81
99
from IN import SO_BINDTODEVICE
82
100
except ImportError:
83
SO_BINDTODEVICE = None
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
96
logger.addHandler(syslogger)
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
102
logger.addHandler(console)
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
113
SO_BINDTODEVICE = None
115
if sys.version_info.major == 2:
119
stored_state_file = "clients.pickle"
121
logger = logging.getLogger()
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
127
except (OSError, AttributeError):
129
def if_nametoindex(interface):
130
"Get an interface index the hard way, i.e. using fcntl()"
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
132
with contextlib.closing(socket.socket()) as s:
133
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
136
return interface_index
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
148
return types.FunctionType(func.__code__,
155
def initlogger(debug, level=logging.WARNING):
156
"""init logger and add loglevel"""
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
162
syslogger.setFormatter(logging.Formatter
163
('Mandos [%(process)d]: %(levelname)s:'
165
logger.addHandler(syslogger)
168
console = logging.StreamHandler()
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
173
logger.addHandler(console)
174
logger.setLevel(level)
177
class PGPError(Exception):
178
"""Exception if encryption/decryption fails"""
182
class PGPEngine(object):
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
196
if e.errno != errno.ENOENT:
198
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
209
def __exit__(self, exc_type, exc_value, traceback):
217
if self.tempdir is not None:
218
# Delete contents of tempdir
219
for root, dirs, files in os.walk(self.tempdir,
221
for filename in files:
222
os.remove(os.path.join(root, filename))
224
os.rmdir(os.path.join(root, dirname))
226
os.rmdir(self.tempdir)
229
def password_encode(self, password):
230
# Passphrase can not be empty and can not contain newlines or
231
# NUL bytes. So we prefix it and hex encode it.
232
encoded = b"mandos" + binascii.hexlify(password)
233
if len(encoded) > 2048:
234
# GnuPG can't handle long passwords, so encode differently
235
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
236
.replace(b"\n", b"\\n")
237
.replace(b"\0", b"\\x00"))
240
def encrypt(self, data, password):
241
passphrase = self.password_encode(password)
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
244
passfile.write(passphrase)
246
proc = subprocess.Popen([self.gpg, '--symmetric',
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
254
if proc.returncode != 0:
258
def decrypt(self, data, password):
259
passphrase = self.password_encode(password)
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
262
passfile.write(passphrase)
264
proc = subprocess.Popen([self.gpg, '--decrypt',
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
272
if proc.returncode != 0:
274
return decrypted_plaintext
277
# Pretend that we have an Avahi module
279
"""This isn't so much a class as it is a module-like namespace.
280
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
104
304
class AvahiError(Exception):
105
305
def __init__(self, value, *args, **kwargs):
106
306
self.value = value
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
307
return super(AvahiError, self).__init__(value, *args,
111
311
class AvahiServiceError(AvahiError):
114
315
class AvahiGroupError(AvahiError):
118
319
class AvahiService(object):
119
320
"""An Avahi (Zeroconf) service.
122
323
interface: integer; avahi.IF_UNSPEC or an interface index.
123
324
Used to optionally bind to the specified interface.
124
325
name: string; Example: 'Mandos'
125
326
type: string; Example: '_mandos._tcp'.
126
See <http://www.dns-sd.org/ServiceTypes.html>
327
See <https://www.iana.org/assignments/service-names-port-numbers>
127
328
port: integer; what port to announce
128
329
TXT: list of strings; TXT record for the service
129
330
domain: string; Domain to publish on, default to .local if empty.
261
489
follow_name_owner_changes=True),
262
490
avahi.DBUS_INTERFACE_SERVER)
263
491
self.server.connect_to_signal("StateChanged",
264
self.server_state_changed)
492
self.server_state_changed)
265
493
self.server_state_changed(self.server.GetState())
268
def _timedelta_to_milliseconds(td):
269
"Convert a datetime.timedelta() to milliseconds"
270
return ((td.days * 24 * 60 * 60 * 1000)
271
+ (td.seconds * 1000)
272
+ (td.microseconds // 1000))
496
class AvahiServiceToSyslog(AvahiService):
497
def rename(self, *args, **kwargs):
498
"""Add the new name to the syslog messages"""
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
500
syslogger.setFormatter(logging.Formatter(
501
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
506
# Pretend that we have a GnuTLS module
507
class GnuTLS(object):
508
"""This isn't so much a class as it is a module-like namespace.
509
It is instantiated once, and simulates having a GnuTLS module."""
511
library = ctypes.util.find_library("gnutls")
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
516
_need_version = b"3.3.0"
519
# Need to use "self" here, since this method is called before
520
# the assignment to the "gnutls" global variable happens.
521
if self.check_version(self._need_version) is None:
522
raise self.Error("Needs GnuTLS {} or later"
523
.format(self._need_version))
525
# Unless otherwise indicated, the constants and types below are
526
# all from the gnutls/gnutls.h C header file.
536
E_NO_CERTIFICATE_FOUND = -49
537
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
540
class session_int(ctypes.Structure):
542
session_t = ctypes.POINTER(session_int)
544
class certificate_credentials_st(ctypes.Structure):
546
certificate_credentials_t = ctypes.POINTER(
547
certificate_credentials_st)
548
certificate_type_t = ctypes.c_int
550
class datum_t(ctypes.Structure):
551
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
552
('size', ctypes.c_uint)]
554
class openpgp_crt_int(ctypes.Structure):
556
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
557
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
558
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
559
credentials_type_t = ctypes.c_int
560
transport_ptr_t = ctypes.c_void_p
561
close_request_t = ctypes.c_int
564
class Error(Exception):
565
# We need to use the class name "GnuTLS" here, since this
566
# exception might be raised from within GnuTLS.__init__,
567
# which is called before the assignment to the "gnutls"
568
# global variable has happened.
569
def __init__(self, message=None, code=None, args=()):
570
# Default usage is by a message string, but if a return
571
# code is passed, convert it to a string with
574
if message is None and code is not None:
575
message = GnuTLS.strerror(code)
576
return super(GnuTLS.Error, self).__init__(
579
class CertificateSecurityError(Error):
583
class Credentials(object):
585
self._c_object = gnutls.certificate_credentials_t()
586
gnutls.certificate_allocate_credentials(
587
ctypes.byref(self._c_object))
588
self.type = gnutls.CRD_CERTIFICATE
591
gnutls.certificate_free_credentials(self._c_object)
593
class ClientSession(object):
594
def __init__(self, socket, credentials=None):
595
self._c_object = gnutls.session_t()
596
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
597
gnutls.set_default_priority(self._c_object)
598
gnutls.transport_set_ptr(self._c_object, socket.fileno())
599
gnutls.handshake_set_private_extensions(self._c_object,
602
if credentials is None:
603
credentials = gnutls.Credentials()
604
gnutls.credentials_set(self._c_object, credentials.type,
605
ctypes.cast(credentials._c_object,
607
self.credentials = credentials
610
gnutls.deinit(self._c_object)
613
return gnutls.handshake(self._c_object)
615
def send(self, data):
619
data_len -= gnutls.record_send(self._c_object,
624
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
626
# Error handling functions
627
def _error_code(result):
628
"""A function to raise exceptions on errors, suitable
629
for the 'restype' attribute on ctypes functions"""
632
if result == gnutls.E_NO_CERTIFICATE_FOUND:
633
raise gnutls.CertificateSecurityError(code=result)
634
raise gnutls.Error(code=result)
636
def _retry_on_error(result, func, arguments):
637
"""A function to retry on some errors, suitable
638
for the 'errcheck' attribute on ctypes functions"""
640
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
641
return _error_code(result)
642
result = func(*arguments)
645
# Unless otherwise indicated, the function declarations below are
646
# all from the gnutls/gnutls.h C header file.
649
priority_set_direct = _library.gnutls_priority_set_direct
650
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
651
ctypes.POINTER(ctypes.c_char_p)]
652
priority_set_direct.restype = _error_code
654
init = _library.gnutls_init
655
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
656
init.restype = _error_code
658
set_default_priority = _library.gnutls_set_default_priority
659
set_default_priority.argtypes = [session_t]
660
set_default_priority.restype = _error_code
662
record_send = _library.gnutls_record_send
663
record_send.argtypes = [session_t, ctypes.c_void_p,
665
record_send.restype = ctypes.c_ssize_t
666
record_send.errcheck = _retry_on_error
668
certificate_allocate_credentials = (
669
_library.gnutls_certificate_allocate_credentials)
670
certificate_allocate_credentials.argtypes = [
671
ctypes.POINTER(certificate_credentials_t)]
672
certificate_allocate_credentials.restype = _error_code
674
certificate_free_credentials = (
675
_library.gnutls_certificate_free_credentials)
676
certificate_free_credentials.argtypes = [
677
certificate_credentials_t]
678
certificate_free_credentials.restype = None
680
handshake_set_private_extensions = (
681
_library.gnutls_handshake_set_private_extensions)
682
handshake_set_private_extensions.argtypes = [session_t,
684
handshake_set_private_extensions.restype = None
686
credentials_set = _library.gnutls_credentials_set
687
credentials_set.argtypes = [session_t, credentials_type_t,
689
credentials_set.restype = _error_code
691
strerror = _library.gnutls_strerror
692
strerror.argtypes = [ctypes.c_int]
693
strerror.restype = ctypes.c_char_p
695
certificate_type_get = _library.gnutls_certificate_type_get
696
certificate_type_get.argtypes = [session_t]
697
certificate_type_get.restype = _error_code
699
certificate_get_peers = _library.gnutls_certificate_get_peers
700
certificate_get_peers.argtypes = [session_t,
701
ctypes.POINTER(ctypes.c_uint)]
702
certificate_get_peers.restype = ctypes.POINTER(datum_t)
704
global_set_log_level = _library.gnutls_global_set_log_level
705
global_set_log_level.argtypes = [ctypes.c_int]
706
global_set_log_level.restype = None
708
global_set_log_function = _library.gnutls_global_set_log_function
709
global_set_log_function.argtypes = [log_func]
710
global_set_log_function.restype = None
712
deinit = _library.gnutls_deinit
713
deinit.argtypes = [session_t]
714
deinit.restype = None
716
handshake = _library.gnutls_handshake
717
handshake.argtypes = [session_t]
718
handshake.restype = _error_code
719
handshake.errcheck = _retry_on_error
721
transport_set_ptr = _library.gnutls_transport_set_ptr
722
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
723
transport_set_ptr.restype = None
725
bye = _library.gnutls_bye
726
bye.argtypes = [session_t, close_request_t]
727
bye.restype = _error_code
728
bye.errcheck = _retry_on_error
730
check_version = _library.gnutls_check_version
731
check_version.argtypes = [ctypes.c_char_p]
732
check_version.restype = ctypes.c_char_p
734
# All the function declarations below are from gnutls/openpgp.h
736
openpgp_crt_init = _library.gnutls_openpgp_crt_init
737
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
738
openpgp_crt_init.restype = _error_code
740
openpgp_crt_import = _library.gnutls_openpgp_crt_import
741
openpgp_crt_import.argtypes = [openpgp_crt_t,
742
ctypes.POINTER(datum_t),
744
openpgp_crt_import.restype = _error_code
746
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
747
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
748
ctypes.POINTER(ctypes.c_uint)]
749
openpgp_crt_verify_self.restype = _error_code
751
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
752
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
753
openpgp_crt_deinit.restype = None
755
openpgp_crt_get_fingerprint = (
756
_library.gnutls_openpgp_crt_get_fingerprint)
757
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
761
openpgp_crt_get_fingerprint.restype = _error_code
763
# Remove non-public functions
764
del _error_code, _retry_on_error
765
# Create the global "gnutls" object, simulating a module
769
def call_pipe(connection, # : multiprocessing.Connection
770
func, *args, **kwargs):
771
"""This function is meant to be called by multiprocessing.Process
773
This function runs func(*args, **kwargs), and writes the resulting
774
return value on the provided multiprocessing.Connection.
776
connection.send(func(*args, **kwargs))
274
780
class Client(object):
275
781
"""A representation of a client host served by this server.
278
_approved: bool(); 'None' if not yet approved/disapproved
784
approved: bool(); 'None' if not yet approved/disapproved
279
785
approval_delay: datetime.timedelta(); Time to wait for approval
280
786
approval_duration: datetime.timedelta(); Duration of one approval
281
787
checker: subprocess.Popen(); a running checker process used
282
788
to see if the client lives.
283
789
'None' if no process is running.
284
checker_callback_tag: a gobject event source tag, or None
790
checker_callback_tag: a GLib event source tag, or None
285
791
checker_command: string; External command which is run to check
286
792
if client lives. %() expansions are done at
287
793
runtime with vars(self) as dict, so that for
288
794
instance %(name)s can be used in the command.
289
checker_initiator_tag: a gobject event source tag, or None
795
checker_initiator_tag: a GLib event source tag, or None
290
796
created: datetime.datetime(); (UTC) object creation
797
client_structure: Object describing what attributes a client has
798
and is used for storing the client at exit
291
799
current_checker_command: string; current running checker_command
292
disable_hook: If set, called by disable() as disable_hook(self)
293
disable_initiator_tag: a gobject event source tag, or None
800
disable_initiator_tag: a GLib event source tag, or None
295
802
fingerprint: string (40 or 32 hexadecimal digits); used to
296
803
uniquely identify the client
298
805
interval: datetime.timedelta(); How often to start a new checker
299
806
last_approval_request: datetime.datetime(); (UTC) or None
300
807
last_checked_ok: datetime.datetime(); (UTC) or None
301
last_enabled: datetime.datetime(); (UTC)
808
last_checker_status: integer between 0 and 255 reflecting exit
809
status of last checker. -1 reflects crashed
810
checker, -2 means no checker completed yet.
811
last_checker_signal: The signal which killed the last checker, if
812
last_checker_status is -1
813
last_enabled: datetime.datetime(); (UTC) or None
302
814
name: string; from the config file, used in log messages and
303
815
D-Bus identifiers
304
816
secret: bytestring; sent verbatim (over TLS) to client
305
817
timeout: datetime.timedelta(); How long from last_checked_ok
306
818
until this client is disabled
307
extended_timeout: extra long timeout when password has been sent
819
extended_timeout: extra long timeout when secret has been sent
308
820
runtime_expansions: Allowed attributes for runtime expansion.
309
821
expires: datetime.datetime(); time (UTC) when a client will be
310
822
disabled, or None
823
server_settings: The server_settings dict from main()
313
826
runtime_expansions = ("approval_delay", "approval_duration",
314
"created", "enabled", "fingerprint",
315
"host", "interval", "last_checked_ok",
827
"created", "enabled", "expires",
828
"fingerprint", "host", "interval",
829
"last_approval_request", "last_checked_ok",
316
830
"last_enabled", "name", "timeout")
318
def timeout_milliseconds(self):
319
"Return the 'timeout' attribute in milliseconds"
320
return _timedelta_to_milliseconds(self.timeout)
322
def extended_timeout_milliseconds(self):
323
"Return the 'extended_timeout' attribute in milliseconds"
324
return _timedelta_to_milliseconds(self.extended_timeout)
326
def interval_milliseconds(self):
327
"Return the 'interval' attribute in milliseconds"
328
return _timedelta_to_milliseconds(self.interval)
330
def approval_delay_milliseconds(self):
331
return _timedelta_to_milliseconds(self.approval_delay)
333
def __init__(self, name = None, disable_hook=None, config=None):
334
"""Note: the 'checker' key in 'config' sets the
335
'checker_command' attribute and *not* the 'checker'
833
"extended_timeout": "PT15M",
835
"checker": "fping -q -- %%(host)s",
837
"approval_delay": "PT0S",
838
"approval_duration": "PT1S",
839
"approved_by_default": "True",
844
def config_parser(config):
845
"""Construct a new dict of client settings of this form:
846
{ client_name: {setting_name: value, ...}, ...}
847
with exceptions for any special settings as defined above.
848
NOTE: Must be a pure function. Must return the same result
849
value given the same arguments.
852
for client_name in config.sections():
853
section = dict(config.items(client_name))
854
client = settings[client_name] = {}
856
client["host"] = section["host"]
857
# Reformat values from string types to Python types
858
client["approved_by_default"] = config.getboolean(
859
client_name, "approved_by_default")
860
client["enabled"] = config.getboolean(client_name,
863
# Uppercase and remove spaces from fingerprint for later
864
# comparison purposes with return value from the
865
# fingerprint() function
866
client["fingerprint"] = (section["fingerprint"].upper()
868
if "secret" in section:
869
client["secret"] = codecs.decode(section["secret"]
872
elif "secfile" in section:
873
with open(os.path.expanduser(os.path.expandvars
874
(section["secfile"])),
876
client["secret"] = secfile.read()
878
raise TypeError("No secret or secfile for section {}"
880
client["timeout"] = string_to_delta(section["timeout"])
881
client["extended_timeout"] = string_to_delta(
882
section["extended_timeout"])
883
client["interval"] = string_to_delta(section["interval"])
884
client["approval_delay"] = string_to_delta(
885
section["approval_delay"])
886
client["approval_duration"] = string_to_delta(
887
section["approval_duration"])
888
client["checker_command"] = section["checker"]
889
client["last_approval_request"] = None
890
client["last_checked_ok"] = None
891
client["last_checker_status"] = -2
895
def __init__(self, settings, name=None, server_settings=None):
897
if server_settings is None:
899
self.server_settings = server_settings
900
# adding all client settings
901
for setting, value in settings.items():
902
setattr(self, setting, value)
905
if not hasattr(self, "last_enabled"):
906
self.last_enabled = datetime.datetime.utcnow()
907
if not hasattr(self, "expires"):
908
self.expires = (datetime.datetime.utcnow()
911
self.last_enabled = None
340
914
logger.debug("Creating client %r", self.name)
341
# Uppercase and remove spaces from fingerprint for later
342
# comparison purposes with return value from the fingerprint()
344
self.fingerprint = (config["fingerprint"].upper()
346
915
logger.debug(" Fingerprint: %s", self.fingerprint)
347
if "secret" in config:
348
self.secret = config["secret"].decode("base64")
349
elif "secfile" in config:
350
with open(os.path.expanduser(os.path.expandvars
351
(config["secfile"])),
353
self.secret = secfile.read()
355
raise TypeError("No secret or secfile for client %s"
357
self.host = config.get("host", "")
358
self.created = datetime.datetime.utcnow()
360
self.last_approval_request = None
361
self.last_enabled = None
362
self.last_checked_ok = None
363
self.timeout = string_to_delta(config["timeout"])
364
self.extended_timeout = string_to_delta(config["extended_timeout"])
365
self.interval = string_to_delta(config["interval"])
366
self.disable_hook = disable_hook
916
self.created = settings.get("created",
917
datetime.datetime.utcnow())
919
# attributes specific for this server instance
367
920
self.checker = None
368
921
self.checker_initiator_tag = None
369
922
self.disable_initiator_tag = None
371
923
self.checker_callback_tag = None
372
self.checker_command = config["checker"]
373
924
self.current_checker_command = None
374
self.last_connect = None
375
self._approved = None
376
self.approved_by_default = config.get("approved_by_default",
378
926
self.approvals_pending = 0
379
self.approval_delay = string_to_delta(
380
config["approval_delay"])
381
self.approval_duration = string_to_delta(
382
config["approval_duration"])
383
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
927
self.changedstate = multiprocessing_manager.Condition(
928
multiprocessing_manager.Lock())
929
self.client_structure = [attr
930
for attr in self.__dict__.keys()
931
if not attr.startswith("_")]
932
self.client_structure.append("client_structure")
934
for name, t in inspect.getmembers(
935
type(self), lambda obj: isinstance(obj, property)):
936
if not name.startswith("_"):
937
self.client_structure.append(name)
939
# Send notice to process children that client state has changed
385
940
def send_changedstate(self):
386
self.changedstate.acquire()
387
self.changedstate.notify_all()
388
self.changedstate.release()
941
with self.changedstate:
942
self.changedstate.notify_all()
390
944
def enable(self):
391
945
"""Start this client's checker and timeout hooks"""
392
946
if getattr(self, "enabled", False):
393
947
# Already enabled
395
self.send_changedstate()
396
# Schedule a new checker to be started an 'interval' from now,
397
# and every interval from then on.
398
self.checker_initiator_tag = (gobject.timeout_add
399
(self.interval_milliseconds(),
401
# Schedule a disable() when 'timeout' has passed
402
949
self.expires = datetime.datetime.utcnow() + self.timeout
403
self.disable_initiator_tag = (gobject.timeout_add
404
(self.timeout_milliseconds(),
406
950
self.enabled = True
407
951
self.last_enabled = datetime.datetime.utcnow()
408
# Also start a new checker *right now*.
953
self.send_changedstate()
411
955
def disable(self, quiet=True):
412
956
"""Disable this client."""
413
957
if not getattr(self, "enabled", False):
416
self.send_changedstate()
418
960
logger.info("Disabling client %s", self.name)
419
if getattr(self, "disable_initiator_tag", False):
420
gobject.source_remove(self.disable_initiator_tag)
961
if getattr(self, "disable_initiator_tag", None) is not None:
962
GLib.source_remove(self.disable_initiator_tag)
421
963
self.disable_initiator_tag = None
422
964
self.expires = None
423
if getattr(self, "checker_initiator_tag", False):
424
gobject.source_remove(self.checker_initiator_tag)
965
if getattr(self, "checker_initiator_tag", None) is not None:
966
GLib.source_remove(self.checker_initiator_tag)
425
967
self.checker_initiator_tag = None
426
968
self.stop_checker()
427
if self.disable_hook:
428
self.disable_hook(self)
429
969
self.enabled = False
430
# Do not run this again if called by a gobject.timeout_add
971
self.send_changedstate()
972
# Do not run this again if called by a GLib.timeout_add
433
975
def __del__(self):
434
self.disable_hook = None
437
def checker_callback(self, pid, condition, command):
978
def init_checker(self):
979
# Schedule a new checker to be started an 'interval' from now,
980
# and every interval from then on.
981
if self.checker_initiator_tag is not None:
982
GLib.source_remove(self.checker_initiator_tag)
983
self.checker_initiator_tag = GLib.timeout_add(
984
int(self.interval.total_seconds() * 1000),
986
# Schedule a disable() when 'timeout' has passed
987
if self.disable_initiator_tag is not None:
988
GLib.source_remove(self.disable_initiator_tag)
989
self.disable_initiator_tag = GLib.timeout_add(
990
int(self.timeout.total_seconds() * 1000), self.disable)
991
# Also start a new checker *right now*.
994
def checker_callback(self, source, condition, connection,
438
996
"""The checker has completed, so take appropriate actions."""
439
997
self.checker_callback_tag = None
440
998
self.checker = None
441
if os.WIFEXITED(condition):
442
exitstatus = os.WEXITSTATUS(condition)
999
# Read return code from connection (see call_pipe)
1000
returncode = connection.recv()
1004
self.last_checker_status = returncode
1005
self.last_checker_signal = None
1006
if self.last_checker_status == 0:
444
1007
logger.info("Checker for %(name)s succeeded",
446
1009
self.checked_ok()
448
logger.info("Checker for %(name)s failed",
1011
logger.info("Checker for %(name)s failed", vars(self))
1013
self.last_checker_status = -1
1014
self.last_checker_signal = -returncode
451
1015
logger.warning("Checker for %(name)s crashed?",
454
def checked_ok(self, timeout=None):
455
"""Bump up the timeout for this client.
457
This should only be called when the client has been seen,
1019
def checked_ok(self):
1020
"""Assert that the client has been seen, alive and well."""
1021
self.last_checked_ok = datetime.datetime.utcnow()
1022
self.last_checker_status = 0
1023
self.last_checker_signal = None
1026
def bump_timeout(self, timeout=None):
1027
"""Bump up the timeout for this client."""
460
1028
if timeout is None:
461
1029
timeout = self.timeout
462
self.last_checked_ok = datetime.datetime.utcnow()
463
gobject.source_remove(self.disable_initiator_tag)
464
self.expires = datetime.datetime.utcnow() + timeout
465
self.disable_initiator_tag = (gobject.timeout_add
466
(_timedelta_to_milliseconds(timeout),
1030
if self.disable_initiator_tag is not None:
1031
GLib.source_remove(self.disable_initiator_tag)
1032
self.disable_initiator_tag = None
1033
if getattr(self, "enabled", False):
1034
self.disable_initiator_tag = GLib.timeout_add(
1035
int(timeout.total_seconds() * 1000), self.disable)
1036
self.expires = datetime.datetime.utcnow() + timeout
469
1038
def need_approval(self):
470
1039
self.last_approval_request = datetime.datetime.utcnow()
472
1041
def start_checker(self):
473
1042
"""Start a new checker subprocess if one is not running.
475
1044
If a checker already exists, leave it running and do
477
1046
# The reason for not killing a running checker is that if we
478
# did that, then if a checker (for some reason) started
479
# running slowly and taking more than 'interval' time, the
480
# client would inevitably timeout, since no checker would get
481
# a chance to run to completion. If we instead leave running
1047
# did that, and if a checker (for some reason) started running
1048
# slowly and taking more than 'interval' time, then the client
1049
# would inevitably timeout, since no checker would get a
1050
# chance to run to completion. If we instead leave running
482
1051
# checkers alone, the checker would have to take more time
483
1052
# than 'timeout' for the client to be disabled, which is as it
486
# If a checker exists, make sure it is not a zombie
488
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
489
except (AttributeError, OSError) as error:
490
if (isinstance(error, OSError)
491
and error.errno != errno.ECHILD):
495
logger.warning("Checker was a zombie")
496
gobject.source_remove(self.checker_callback_tag)
497
self.checker_callback(pid, status,
498
self.current_checker_command)
1055
if self.checker is not None and not self.checker.is_alive():
1056
logger.warning("Checker was not alive; joining")
499
1059
# Start a new checker if needed
500
1060
if self.checker is None:
1061
# Escape attributes for the shell
1063
attr: re.escape(str(getattr(self, attr)))
1064
for attr in self.runtime_expansions}
502
# In case checker_command has exactly one % operator
503
command = self.checker_command % self.host
505
# Escape attributes for the shell
506
escaped_attrs = dict(
508
re.escape(unicode(str(getattr(self, attr, "")),
512
self.runtime_expansions)
515
command = self.checker_command % escaped_attrs
516
except TypeError as error:
517
logger.error('Could not format string "%s":'
518
' %s', self.checker_command, error)
519
return True # Try again later
1066
command = self.checker_command % escaped_attrs
1067
except TypeError as error:
1068
logger.error('Could not format string "%s"',
1069
self.checker_command,
1071
return True # Try again later
520
1072
self.current_checker_command = command
522
logger.info("Starting checker %r for %s",
524
# We don't need to redirect stdout and stderr, since
525
# in normal mode, that is already done by daemon(),
526
# and in debug mode we don't want to. (Stdin is
527
# always replaced by /dev/null.)
528
self.checker = subprocess.Popen(command,
531
self.checker_callback_tag = (gobject.child_watch_add
533
self.checker_callback,
535
# The checker may have completed before the gobject
536
# watch was added. Check for this.
537
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
539
gobject.source_remove(self.checker_callback_tag)
540
self.checker_callback(pid, status, command)
541
except OSError as error:
542
logger.error("Failed to start subprocess: %s",
544
# Re-run this periodically if run by gobject.timeout_add
1073
logger.info("Starting checker %r for %s", command,
1075
# We don't need to redirect stdout and stderr, since
1076
# in normal mode, that is already done by daemon(),
1077
# and in debug mode we don't want to. (Stdin is
1078
# always replaced by /dev/null.)
1079
# The exception is when not debugging but nevertheless
1080
# running in the foreground; use the previously
1082
popen_args = {"close_fds": True,
1085
if (not self.server_settings["debug"]
1086
and self.server_settings["foreground"]):
1087
popen_args.update({"stdout": wnull,
1089
pipe = multiprocessing.Pipe(duplex=False)
1090
self.checker = multiprocessing.Process(
1092
args=(pipe[1], subprocess.call, command),
1094
self.checker.start()
1095
self.checker_callback_tag = GLib.io_add_watch(
1096
pipe[0].fileno(), GLib.IO_IN,
1097
self.checker_callback, pipe[0], command)
1098
# Re-run this periodically if run by GLib.timeout_add
547
1101
def stop_checker(self):
548
1102
"""Force the checker process, if any, to stop."""
549
1103
if self.checker_callback_tag:
550
gobject.source_remove(self.checker_callback_tag)
1104
GLib.source_remove(self.checker_callback_tag)
551
1105
self.checker_callback_tag = None
552
1106
if getattr(self, "checker", None) is None:
554
1108
logger.debug("Stopping checker for %(name)s", vars(self))
556
os.kill(self.checker.pid, signal.SIGTERM)
558
#if self.checker.poll() is None:
559
# os.kill(self.checker.pid, signal.SIGKILL)
560
except OSError as error:
561
if error.errno != errno.ESRCH: # No such process
1109
self.checker.terminate()
563
1110
self.checker = None
566
def dbus_service_property(dbus_interface, signature="v",
567
access="readwrite", byte_arrays=False):
1113
def dbus_service_property(dbus_interface,
568
1117
"""Decorators for marking methods of a DBusObjectWithProperties to
569
1118
become properties on the D-Bus.
571
1120
The decorated method will be called with no arguments by "Get"
572
1121
and with one argument by "Set".
574
1123
The parameters, where they are supported, are the same as
575
1124
dbus.service.method, except there is only "signature", since the
576
1125
type from Get() and the type sent to Set() is the same.
615
class DBusObjectWithProperties(dbus.service.Object):
1208
class DBusObjectWithAnnotations(dbus.service.Object):
1209
"""A D-Bus object with annotations.
1211
Classes inheriting from this can use the dbus_annotations
1212
decorator to add annotations to methods or signals.
1216
def _is_dbus_thing(thing):
1217
"""Returns a function testing if an attribute is a D-Bus thing
1219
If called like _is_dbus_thing("method") it returns a function
1220
suitable for use as predicate to inspect.getmembers().
1222
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1225
def _get_all_dbus_things(self, thing):
1226
"""Returns a generator of (name, attribute) pairs
1228
return ((getattr(athing.__get__(self), "_dbus_name", name),
1229
athing.__get__(self))
1230
for cls in self.__class__.__mro__
1232
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1234
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1236
path_keyword='object_path',
1237
connection_keyword='connection')
1238
def Introspect(self, object_path, connection):
1239
"""Overloading of standard D-Bus method.
1241
Inserts annotation tags on methods and signals.
1243
xmlstring = dbus.service.Object.Introspect(self, object_path,
1246
document = xml.dom.minidom.parseString(xmlstring)
1248
for if_tag in document.getElementsByTagName("interface"):
1249
# Add annotation tags
1250
for typ in ("method", "signal"):
1251
for tag in if_tag.getElementsByTagName(typ):
1253
for name, prop in (self.
1254
_get_all_dbus_things(typ)):
1255
if (name == tag.getAttribute("name")
1256
and prop._dbus_interface
1257
== if_tag.getAttribute("name")):
1258
annots.update(getattr(
1259
prop, "_dbus_annotations", {}))
1260
for name, value in annots.items():
1261
ann_tag = document.createElement(
1263
ann_tag.setAttribute("name", name)
1264
ann_tag.setAttribute("value", value)
1265
tag.appendChild(ann_tag)
1266
# Add interface annotation tags
1267
for annotation, value in dict(
1268
itertools.chain.from_iterable(
1269
annotations().items()
1270
for name, annotations
1271
in self._get_all_dbus_things("interface")
1272
if name == if_tag.getAttribute("name")
1274
ann_tag = document.createElement("annotation")
1275
ann_tag.setAttribute("name", annotation)
1276
ann_tag.setAttribute("value", value)
1277
if_tag.appendChild(ann_tag)
1278
# Fix argument name for the Introspect method itself
1279
if (if_tag.getAttribute("name")
1280
== dbus.INTROSPECTABLE_IFACE):
1281
for cn in if_tag.getElementsByTagName("method"):
1282
if cn.getAttribute("name") == "Introspect":
1283
for arg in cn.getElementsByTagName("arg"):
1284
if (arg.getAttribute("direction")
1286
arg.setAttribute("name",
1288
xmlstring = document.toxml("utf-8")
1290
except (AttributeError, xml.dom.DOMException,
1291
xml.parsers.expat.ExpatError) as error:
1292
logger.error("Failed to override Introspection method",
1297
class DBusObjectWithProperties(DBusObjectWithAnnotations):
616
1298
"""A D-Bus object with properties.
618
1300
Classes inheriting from this can use the dbus_service_property
619
1301
decorator to expose methods as D-Bus properties. It exposes the
620
1302
standard Get(), Set(), and GetAll() methods on the D-Bus.
624
def _is_dbus_property(obj):
625
return getattr(obj, "_dbus_is_property", False)
627
def _get_all_dbus_properties(self):
628
"""Returns a generator of (name, attribute) pairs
630
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
631
for cls in self.__class__.__mro__
632
for name, prop in inspect.getmembers(cls, self._is_dbus_property))
634
1305
def _get_dbus_property(self, interface_name, property_name):
635
1306
"""Returns a bound method if one exists which is a D-Bus
636
1307
property with the specified name and interface.
638
for cls in self.__class__.__mro__:
639
for name, value in inspect.getmembers(cls, self._is_dbus_property):
640
if value._dbus_name == property_name and value._dbus_interface == interface_name:
1309
for cls in self.__class__.__mro__:
1310
for name, value in inspect.getmembers(
1311
cls, self._is_dbus_thing("property")):
1312
if (value._dbus_name == property_name
1313
and value._dbus_interface == interface_name):
641
1314
return value.__get__(self)
643
1316
# No such property
644
raise DBusPropertyNotFound(self.dbus_object_path + ":"
645
+ interface_name + "."
648
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1317
raise DBusPropertyNotFound("{}:{}.{}".format(
1318
self.dbus_object_path, interface_name, property_name))
1321
def _get_all_interface_names(cls):
1322
"""Get a sequence of all interfaces supported by an object"""
1323
return (name for name in set(getattr(getattr(x, attr),
1324
"_dbus_interface", None)
1325
for x in (inspect.getmro(cls))
1327
if name is not None)
1329
@dbus.service.method(dbus.PROPERTIES_IFACE,
649
1331
out_signature="v")
650
1332
def Get(self, interface_name, property_name):
651
1333
"""Standard D-Bus property Get() method, see D-Bus standard.
743
1458
except (AttributeError, xml.dom.DOMException,
744
1459
xml.parsers.expat.ExpatError) as error:
745
1460
logger.error("Failed to override Introspection method",
750
def datetime_to_dbus (dt, variant_level=0):
1466
dbus.OBJECT_MANAGER_IFACE
1467
except AttributeError:
1468
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1471
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1472
"""A D-Bus object with an ObjectManager.
1474
Classes inheriting from this exposes the standard
1475
GetManagedObjects call and the InterfacesAdded and
1476
InterfacesRemoved signals on the standard
1477
"org.freedesktop.DBus.ObjectManager" interface.
1479
Note: No signals are sent automatically; they must be sent
1482
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1483
out_signature="a{oa{sa{sv}}}")
1484
def GetManagedObjects(self):
1485
"""This function must be overridden"""
1486
raise NotImplementedError()
1488
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1489
signature="oa{sa{sv}}")
1490
def InterfacesAdded(self, object_path, interfaces_and_properties):
1493
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1494
def InterfacesRemoved(self, object_path, interfaces):
1497
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1499
path_keyword='object_path',
1500
connection_keyword='connection')
1501
def Introspect(self, object_path, connection):
1502
"""Overloading of standard D-Bus method.
1504
Override return argument name of GetManagedObjects to be
1505
"objpath_interfaces_and_properties"
1507
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1511
document = xml.dom.minidom.parseString(xmlstring)
1513
for if_tag in document.getElementsByTagName("interface"):
1514
# Fix argument name for the GetManagedObjects method
1515
if (if_tag.getAttribute("name")
1516
== dbus.OBJECT_MANAGER_IFACE):
1517
for cn in if_tag.getElementsByTagName("method"):
1518
if (cn.getAttribute("name")
1519
== "GetManagedObjects"):
1520
for arg in cn.getElementsByTagName("arg"):
1521
if (arg.getAttribute("direction")
1525
"objpath_interfaces"
1527
xmlstring = document.toxml("utf-8")
1529
except (AttributeError, xml.dom.DOMException,
1530
xml.parsers.expat.ExpatError) as error:
1531
logger.error("Failed to override Introspection method",
1536
def datetime_to_dbus(dt, variant_level=0):
751
1537
"""Convert a UTC datetime.datetime() to a D-Bus type."""
753
return dbus.String("", variant_level = variant_level)
754
return dbus.String(dt.isoformat(),
755
variant_level=variant_level)
757
class AlternateDBusNamesMetaclass(DBusObjectWithProperties.__metaclass__):
758
"""Applied to an empty subclass of a D-Bus object, this metaclass
759
will add additional D-Bus attributes matching a certain pattern.
1539
return dbus.String("", variant_level=variant_level)
1540
return dbus.String(dt.isoformat(), variant_level=variant_level)
1543
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1544
"""A class decorator; applied to a subclass of
1545
dbus.service.Object, it will add alternate D-Bus attributes with
1546
interface names according to the "alt_interface_names" mapping.
1549
@alternate_dbus_interfaces({"org.example.Interface":
1550
"net.example.AlternateInterface"})
1551
class SampleDBusObject(dbus.service.Object):
1552
@dbus.service.method("org.example.Interface")
1553
def SampleDBusMethod():
1556
The above "SampleDBusMethod" on "SampleDBusObject" will be
1557
reachable via two interfaces: "org.example.Interface" and
1558
"net.example.AlternateInterface", the latter of which will have
1559
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1560
"true", unless "deprecate" is passed with a False value.
1562
This works for methods and signals, and also for D-Bus properties
1563
(from DBusObjectWithProperties) and interfaces (from the
1564
dbus_interface_annotations decorator).
761
def __new__(mcs, name, bases, attr):
762
# Go through all the base classes which could have D-Bus
763
# methods, signals, or properties in them
764
for base in (b for b in bases
765
if issubclass(b, dbus.service.Object)):
766
# Go though all attributes of the base class
767
for attrname, attribute in inspect.getmembers(base):
1568
for orig_interface_name, alt_interface_name in (
1569
alt_interface_names.items()):
1571
interface_names = set()
1572
# Go though all attributes of the class
1573
for attrname, attribute in inspect.getmembers(cls):
768
1574
# Ignore non-D-Bus attributes, and D-Bus attributes
769
1575
# with the wrong interface name
770
1576
if (not hasattr(attribute, "_dbus_interface")
771
or not attribute._dbus_interface
772
.startswith("se.recompile.Mandos")):
1577
or not attribute._dbus_interface.startswith(
1578
orig_interface_name)):
774
1580
# Create an alternate D-Bus interface name based on
775
1581
# the current name
776
alt_interface = (attribute._dbus_interface
777
.replace("se.recompile.Mandos",
778
"se.bsnet.fukt.Mandos"))
1582
alt_interface = attribute._dbus_interface.replace(
1583
orig_interface_name, alt_interface_name)
1584
interface_names.add(alt_interface)
779
1585
# Is this a D-Bus signal?
780
1586
if getattr(attribute, "_dbus_is_signal", False):
781
# Extract the original non-method function by
783
nonmethod_func = (dict(
1587
# Extract the original non-method undecorated
1588
# function by black magic
1589
if sys.version_info.major == 2:
1590
nonmethod_func = (dict(
784
1591
zip(attribute.func_code.co_freevars,
785
attribute.__closure__))["func"]
1592
attribute.__closure__))
1593
["func"].cell_contents)
1595
nonmethod_func = (dict(
1596
zip(attribute.__code__.co_freevars,
1597
attribute.__closure__))
1598
["func"].cell_contents)
787
1599
# Create a new, but exactly alike, function
788
1600
# object, and decorate it to be a new D-Bus signal
789
1601
# with the alternate D-Bus interface name
790
new_function = (dbus.service.signal
792
attribute._dbus_signature)
794
nonmethod_func.func_code,
795
nonmethod_func.func_globals,
796
nonmethod_func.func_name,
797
nonmethod_func.func_defaults,
798
nonmethod_func.func_closure)))
1602
new_function = copy_function(nonmethod_func)
1603
new_function = (dbus.service.signal(
1605
attribute._dbus_signature)(new_function))
1606
# Copy annotations, if any
1608
new_function._dbus_annotations = dict(
1609
attribute._dbus_annotations)
1610
except AttributeError:
799
1613
# Define a creator of a function to call both the
800
# old and new functions, so both the old and new
801
# signals gets sent when the function is called
1614
# original and alternate functions, so both the
1615
# original and alternate signals gets sent when
1616
# the function is called
802
1617
def fixscope(func1, func2):
803
1618
"""This function is a scope container to pass
804
1619
func1 and func2 to the "call_both" function
805
1620
outside of its arguments"""
1622
@functools.wraps(func2)
806
1623
def call_both(*args, **kwargs):
807
1624
"""This function will emit two D-Bus
808
1625
signals by calling func1 and func2"""
809
1626
func1(*args, **kwargs)
810
1627
func2(*args, **kwargs)
1628
# Make wrapper function look like a D-Bus
1630
for name, attr in inspect.getmembers(func2):
1631
if name.startswith("_dbus_"):
1632
setattr(call_both, name, attr)
811
1634
return call_both
812
1635
# Create the "call_both" function and add it to
814
attr[attrname] = fixscope(attribute,
1637
attr[attrname] = fixscope(attribute, new_function)
816
1638
# Is this a D-Bus method?
817
1639
elif getattr(attribute, "_dbus_is_method", False):
818
1640
# Create a new, but exactly alike, function
819
1641
# object. Decorate it to be a new D-Bus method
820
1642
# with the alternate D-Bus interface name. Add it
822
attr[attrname] = (dbus.service.method
824
attribute._dbus_in_signature,
825
attribute._dbus_out_signature)
827
(attribute.func_code,
828
attribute.func_globals,
830
attribute.func_defaults,
831
attribute.func_closure)))
1645
dbus.service.method(
1647
attribute._dbus_in_signature,
1648
attribute._dbus_out_signature)
1649
(copy_function(attribute)))
1650
# Copy annotations, if any
1652
attr[attrname]._dbus_annotations = dict(
1653
attribute._dbus_annotations)
1654
except AttributeError:
832
1656
# Is this a D-Bus property?
833
1657
elif getattr(attribute, "_dbus_is_property", False):
834
1658
# Create a new, but exactly alike, function
835
1659
# object, and decorate it to be a new D-Bus
836
1660
# property with the alternate D-Bus interface
837
1661
# name. Add it to the class.
838
attr[attrname] = (dbus_service_property
840
attribute._dbus_signature,
841
attribute._dbus_access,
843
._dbus_get_args_options
846
(attribute.func_code,
847
attribute.func_globals,
849
attribute.func_defaults,
850
attribute.func_closure)))
851
return type.__new__(mcs, name, bases, attr)
1662
attr[attrname] = (dbus_service_property(
1663
alt_interface, attribute._dbus_signature,
1664
attribute._dbus_access,
1665
attribute._dbus_get_args_options
1667
(copy_function(attribute)))
1668
# Copy annotations, if any
1670
attr[attrname]._dbus_annotations = dict(
1671
attribute._dbus_annotations)
1672
except AttributeError:
1674
# Is this a D-Bus interface?
1675
elif getattr(attribute, "_dbus_is_interface", False):
1676
# Create a new, but exactly alike, function
1677
# object. Decorate it to be a new D-Bus interface
1678
# with the alternate D-Bus interface name. Add it
1681
dbus_interface_annotations(alt_interface)
1682
(copy_function(attribute)))
1684
# Deprecate all alternate interfaces
1685
iname = "_AlternateDBusNames_interface_annotation{}"
1686
for interface_name in interface_names:
1688
@dbus_interface_annotations(interface_name)
1690
return {"org.freedesktop.DBus.Deprecated":
1692
# Find an unused name
1693
for aname in (iname.format(i)
1694
for i in itertools.count()):
1695
if aname not in attr:
1699
# Replace the class with a new subclass of it with
1700
# methods, signals, etc. as created above.
1701
if sys.version_info.major == 2:
1702
cls = type(b"{}Alternate".format(cls.__name__),
1705
cls = type("{}Alternate".format(cls.__name__),
1712
@alternate_dbus_interfaces({"se.recompile.Mandos":
1713
"se.bsnet.fukt.Mandos"})
853
1714
class ClientDBus(Client, DBusObjectWithProperties):
854
1715
"""A Client class using D-Bus
857
1718
dbus_object_path: dbus.ObjectPath
858
1719
bus: dbus.SystemBus()
861
1722
runtime_expansions = (Client.runtime_expansions
862
+ ("dbus_object_path",))
1723
+ ("dbus_object_path", ))
1725
_interface = "se.recompile.Mandos.Client"
864
1727
# dbus.service.Object doesn't use super(), so we can't either.
866
def __init__(self, bus = None, *args, **kwargs):
867
self._approvals_pending = 0
1729
def __init__(self, bus=None, *args, **kwargs):
869
1731
Client.__init__(self, *args, **kwargs)
870
1732
# Only now, when this client is initialized, can it show up on
872
client_object_name = unicode(self.name).translate(
1734
client_object_name = str(self.name).translate(
873
1735
{ord("."): ord("_"),
874
1736
ord("-"): ord("_")})
875
self.dbus_object_path = (dbus.ObjectPath
876
("/clients/" + client_object_name))
1737
self.dbus_object_path = dbus.ObjectPath(
1738
"/clients/" + client_object_name)
877
1739
DBusObjectWithProperties.__init__(self, self.bus,
878
1740
self.dbus_object_path)
880
def notifychangeproperty(transform_func,
881
dbus_name, type_func=lambda x: x,
1742
def notifychangeproperty(transform_func, dbus_name,
1743
type_func=lambda x: x,
1745
invalidate_only=False,
1746
_interface=_interface):
883
1747
""" Modify a variable so that it's a property which announces
884
1748
its changes to DBus.
886
transform_fun: Function that takes a value and transforms it
1750
transform_fun: Function that takes a value and a variant_level
1751
and transforms it to a D-Bus type.
888
1752
dbus_name: D-Bus name of the variable
889
1753
type_func: Function that transform the value before sending it
890
1754
to the D-Bus. Default: no transform
891
1755
variant_level: D-Bus variant level. Default: 1
1757
attrname = "_{}".format(dbus_name)
894
1759
def setter(self, value):
895
old_value = real_value[0]
896
real_value[0] = value
897
1760
if hasattr(self, "dbus_object_path"):
898
if type_func(old_value) != type_func(real_value[0]):
899
dbus_value = transform_func(type_func(real_value[0]),
901
self.PropertyChanged(dbus.String(dbus_name),
904
return property(lambda self: real_value[0], setter)
1761
if (not hasattr(self, attrname) or
1762
type_func(getattr(self, attrname, None))
1763
!= type_func(value)):
1765
self.PropertiesChanged(
1766
_interface, dbus.Dictionary(),
1767
dbus.Array((dbus_name, )))
1769
dbus_value = transform_func(
1771
variant_level=variant_level)
1772
self.PropertyChanged(dbus.String(dbus_name),
1774
self.PropertiesChanged(
1776
dbus.Dictionary({dbus.String(dbus_name):
1779
setattr(self, attrname, value)
1781
return property(lambda self: getattr(self, attrname), setter)
907
1783
expires = notifychangeproperty(datetime_to_dbus, "Expires")
908
1784
approvals_pending = notifychangeproperty(dbus.Boolean,
909
1785
"ApprovalPending",
911
1787
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
912
1788
last_enabled = notifychangeproperty(datetime_to_dbus,
914
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
915
type_func = lambda checker: checker is not None)
1790
checker = notifychangeproperty(
1791
dbus.Boolean, "CheckerRunning",
1792
type_func=lambda checker: checker is not None)
916
1793
last_checked_ok = notifychangeproperty(datetime_to_dbus,
917
1794
"LastCheckedOK")
918
last_approval_request = notifychangeproperty(datetime_to_dbus,
919
"LastApprovalRequest")
1795
last_checker_status = notifychangeproperty(dbus.Int16,
1796
"LastCheckerStatus")
1797
last_approval_request = notifychangeproperty(
1798
datetime_to_dbus, "LastApprovalRequest")
920
1799
approved_by_default = notifychangeproperty(dbus.Boolean,
921
1800
"ApprovedByDefault")
922
approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
923
type_func = _timedelta_to_milliseconds)
924
approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
925
type_func = _timedelta_to_milliseconds)
1801
approval_delay = notifychangeproperty(
1802
dbus.UInt64, "ApprovalDelay",
1803
type_func=lambda td: td.total_seconds() * 1000)
1804
approval_duration = notifychangeproperty(
1805
dbus.UInt64, "ApprovalDuration",
1806
type_func=lambda td: td.total_seconds() * 1000)
926
1807
host = notifychangeproperty(dbus.String, "Host")
927
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
928
type_func = _timedelta_to_milliseconds)
929
extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
930
type_func = _timedelta_to_milliseconds)
931
interval = notifychangeproperty(dbus.UInt16, "Interval",
932
type_func = _timedelta_to_milliseconds)
1808
timeout = notifychangeproperty(
1809
dbus.UInt64, "Timeout",
1810
type_func=lambda td: td.total_seconds() * 1000)
1811
extended_timeout = notifychangeproperty(
1812
dbus.UInt64, "ExtendedTimeout",
1813
type_func=lambda td: td.total_seconds() * 1000)
1814
interval = notifychangeproperty(
1815
dbus.UInt64, "Interval",
1816
type_func=lambda td: td.total_seconds() * 1000)
933
1817
checker_command = notifychangeproperty(dbus.String, "Checker")
1818
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1819
invalidate_only=True)
935
1821
del notifychangeproperty
937
1823
def __del__(self, *args, **kwargs):
939
1825
self.remove_from_connection()
1246
2164
self._pipe = child_pipe
1247
2165
self._pipe.send(('init', fpr, address))
1248
2166
if not self._pipe.recv():
1251
2169
def __getattribute__(self, name):
1252
if(name == '_pipe'):
1253
2171
return super(ProxyClient, self).__getattribute__(name)
1254
2172
self._pipe.send(('getattr', name))
1255
2173
data = self._pipe.recv()
1256
2174
if data[0] == 'data':
1258
2176
if data[0] == 'function':
1259
2178
def func(*args, **kwargs):
1260
2179
self._pipe.send(('funcall', name, args, kwargs))
1261
2180
return self._pipe.recv()[1]
1264
2184
def __setattr__(self, name, value):
1265
if(name == '_pipe'):
1266
2186
return super(ProxyClient, self).__setattr__(name, value)
1267
2187
self._pipe.send(('setattr', name, value))
1269
class ClientDBusTransitional(ClientDBus):
1270
__metaclass__ = AlternateDBusNamesMetaclass
1272
2190
class ClientHandler(socketserver.BaseRequestHandler, object):
1273
2191
"""A class to handle client connections.
1275
2193
Instantiated once for each connection to handle it.
1276
2194
Note: This will run in its own forked process."""
1278
2196
def handle(self):
1279
2197
with contextlib.closing(self.server.child_pipe) as child_pipe:
1280
2198
logger.info("TCP connection from: %s",
1281
unicode(self.client_address))
2199
str(self.client_address))
1282
2200
logger.debug("Pipe FD: %d",
1283
2201
self.server.child_pipe.fileno())
1285
session = (gnutls.connection
1286
.ClientSession(self.request,
1288
.X509Credentials()))
1290
# Note: gnutls.connection.X509Credentials is really a
1291
# generic GnuTLS certificate credentials object so long as
1292
# no X.509 keys are added to it. Therefore, we can use it
1293
# here despite using OpenPGP certificates.
1295
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1296
# "+AES-256-CBC", "+SHA1",
1297
# "+COMP-NULL", "+CTYPE-OPENPGP",
2203
session = gnutls.ClientSession(self.request)
2205
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2206
# "+AES-256-CBC", "+SHA1",
2207
# "+COMP-NULL", "+CTYPE-OPENPGP",
1299
2209
# Use a fallback default, since this MUST be set.
1300
2210
priority = self.server.gnutls_priority
1301
2211
if priority is None:
1302
2212
priority = "NORMAL"
1303
(gnutls.library.functions
1304
.gnutls_priority_set_direct(session._c_object,
2213
gnutls.priority_set_direct(session._c_object,
2214
priority.encode("utf-8"),
1307
2217
# Start communication using the Mandos protocol
1308
2218
# Get protocol number
1309
2219
line = self.request.makefile().readline()
1310
2220
logger.debug("Protocol version: %r", line)
1312
2222
if int(line.strip().split()[0]) > 1:
2223
raise RuntimeError(line)
1314
2224
except (ValueError, IndexError, RuntimeError) as error:
1315
2225
logger.error("Unknown protocol version: %s", error)
1318
2228
# Start GnuTLS connection
1320
2230
session.handshake()
1321
except gnutls.errors.GNUTLSError as error:
2231
except gnutls.Error as error:
1322
2232
logger.warning("Handshake failed: %s", error)
1323
2233
# Do not run session.bye() here: the session is not
1324
2234
# established. Just abandon the request.
1326
2236
logger.debug("Handshake succeeded")
1328
2238
approval_required = False
1331
fpr = self.fingerprint(self.peer_certificate
1334
gnutls.errors.GNUTLSError) as error:
2241
fpr = self.fingerprint(
2242
self.peer_certificate(session))
2243
except (TypeError, gnutls.Error) as error:
1335
2244
logger.warning("Bad certificate: %s", error)
1337
2246
logger.debug("Fingerprint: %s", fpr)
1340
2249
client = ProxyClient(child_pipe, fpr,
1341
2250
self.client_address)
1342
2251
except KeyError:
1345
2254
if client.approval_delay:
1346
2255
delay = client.approval_delay
1347
2256
client.approvals_pending += 1
1348
2257
approval_required = True
1351
2260
if not client.enabled:
1352
2261
logger.info("Client %s is disabled",
1354
2263
if self.server.use_dbus:
1355
2264
# Emit D-Bus signal
1356
client.Rejected("Disabled")
2265
client.Rejected("Disabled")
1359
if client._approved or not client.approval_delay:
1360
#We are approved or approval is disabled
2268
if client.approved or not client.approval_delay:
2269
# We are approved or approval is disabled
1362
elif client._approved is None:
2271
elif client.approved is None:
1363
2272
logger.info("Client %s needs approval",
1365
2274
if self.server.use_dbus:
1366
2275
# Emit D-Bus signal
1367
2276
client.NeedApproval(
1368
client.approval_delay_milliseconds(),
1369
client.approved_by_default)
2277
client.approval_delay.total_seconds()
2278
* 1000, client.approved_by_default)
1371
2280
logger.warning("Client %s was not approved",
1397
2305
delay -= time2 - time
1400
while sent_size < len(client.secret):
1402
sent = session.send(client.secret[sent_size:])
1403
except gnutls.errors.GNUTLSError as error:
1404
logger.warning("gnutls send failed")
1406
logger.debug("Sent: %d, remaining: %d",
1407
sent, len(client.secret)
1408
- (sent_size + sent))
2308
session.send(client.secret)
2309
except gnutls.Error as error:
2310
logger.warning("gnutls send failed",
1411
2314
logger.info("Sending secret to %s", client.name)
1412
# bump the timeout as if seen
1413
client.checked_ok(client.extended_timeout)
2315
# bump the timeout using extended_timeout
2316
client.bump_timeout(client.extended_timeout)
1414
2317
if self.server.use_dbus:
1415
2318
# Emit D-Bus signal
1416
2319
client.GotSecret()
1419
2322
if approval_required:
1420
2323
client.approvals_pending -= 1
1423
except gnutls.errors.GNUTLSError as error:
1424
logger.warning("GnuTLS bye failed")
2326
except gnutls.Error as error:
2327
logger.warning("GnuTLS bye failed",
1427
2331
def peer_certificate(session):
1428
2332
"Return the peer's OpenPGP certificate as a bytestring"
1429
2333
# If not an OpenPGP certificate...
1430
if (gnutls.library.functions
1431
.gnutls_certificate_type_get(session._c_object)
1432
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1433
# ...do the normal thing
1434
return session.peer_certificate
2334
if (gnutls.certificate_type_get(session._c_object)
2335
!= gnutls.CRT_OPENPGP):
2336
# ...return invalid data
1435
2338
list_size = ctypes.c_uint(1)
1436
cert_list = (gnutls.library.functions
1437
.gnutls_certificate_get_peers
2339
cert_list = (gnutls.certificate_get_peers
1438
2340
(session._c_object, ctypes.byref(list_size)))
1439
2341
if not bool(cert_list) and list_size.value != 0:
1440
raise gnutls.errors.GNUTLSError("error getting peer"
2342
raise gnutls.Error("error getting peer certificate")
1442
2343
if list_size.value == 0:
1444
2345
cert = cert_list[0]
1445
2346
return ctypes.string_at(cert.data, cert.size)
1448
2349
def fingerprint(openpgp):
1449
2350
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1450
2351
# New GnuTLS "datum" with the OpenPGP public key
1451
datum = (gnutls.library.types
1452
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1455
ctypes.c_uint(len(openpgp))))
2352
datum = gnutls.datum_t(
2353
ctypes.cast(ctypes.c_char_p(openpgp),
2354
ctypes.POINTER(ctypes.c_ubyte)),
2355
ctypes.c_uint(len(openpgp)))
1456
2356
# New empty GnuTLS certificate
1457
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1458
(gnutls.library.functions
1459
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2357
crt = gnutls.openpgp_crt_t()
2358
gnutls.openpgp_crt_init(ctypes.byref(crt))
1460
2359
# Import the OpenPGP public key into the certificate
1461
(gnutls.library.functions
1462
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1463
gnutls.library.constants
1464
.GNUTLS_OPENPGP_FMT_RAW))
2360
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2361
gnutls.OPENPGP_FMT_RAW)
1465
2362
# Verify the self signature in the key
1466
2363
crtverify = ctypes.c_uint()
1467
(gnutls.library.functions
1468
.gnutls_openpgp_crt_verify_self(crt, 0,
1469
ctypes.byref(crtverify)))
2364
gnutls.openpgp_crt_verify_self(crt, 0,
2365
ctypes.byref(crtverify))
1470
2366
if crtverify.value != 0:
1471
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1472
raise (gnutls.errors.CertificateSecurityError
2367
gnutls.openpgp_crt_deinit(crt)
2368
raise gnutls.CertificateSecurityError(code
1474
2370
# New buffer for the fingerprint
1475
2371
buf = ctypes.create_string_buffer(20)
1476
2372
buf_len = ctypes.c_size_t()
1477
2373
# Get the fingerprint from the certificate into the buffer
1478
(gnutls.library.functions
1479
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1480
ctypes.byref(buf_len)))
2374
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2375
ctypes.byref(buf_len))
1481
2376
# Deinit the certificate
1482
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2377
gnutls.openpgp_crt_deinit(crt)
1483
2378
# Convert the buffer to a Python bytestring
1484
2379
fpr = ctypes.string_at(buf, buf_len.value)
1485
2380
# Convert the bytestring to hexadecimal notation
1486
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2381
hex_fpr = binascii.hexlify(fpr).upper()
1490
2385
class MultiprocessingMixIn(object):
1491
2386
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1492
2388
def sub_process_main(self, request, address):
1494
2390
self.finish_request(request, address)
1496
2392
self.handle_error(request, address)
1497
2393
self.close_request(request)
1499
2395
def process_request(self, request, address):
1500
2396
"""Start a new process to process the request."""
1501
multiprocessing.Process(target = self.sub_process_main,
1502
args = (request, address)).start()
2397
proc = multiprocessing.Process(target=self.sub_process_main,
2398
args=(request, address))
1505
2403
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1506
2404
""" adds a pipe to the MixIn """
1507
2406
def process_request(self, request, client_address):
1508
2407
"""Overrides and wraps the original process_request().
1510
2409
This function creates a new pipe in self.pipe
1512
2411
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1514
super(MultiprocessingMixInWithPipe,
1515
self).process_request(request, client_address)
2413
proc = MultiprocessingMixIn.process_request(self, request,
1516
2415
self.child_pipe.close()
1517
self.add_pipe(parent_pipe)
1519
def add_pipe(self, parent_pipe):
2416
self.add_pipe(parent_pipe, proc)
2418
def add_pipe(self, parent_pipe, proc):
1520
2419
"""Dummy function; override as necessary"""
1521
raise NotImplementedError
2420
raise NotImplementedError()
1524
2423
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1525
2424
socketserver.TCPServer, object):
1526
2425
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1529
2428
enabled: Boolean; whether this server is activated yet
1530
2429
interface: None or a network interface name (string)
1531
2430
use_ipv6: Boolean; to use IPv6 or not
1533
2433
def __init__(self, server_address, RequestHandlerClass,
1534
interface=None, use_ipv6=True):
2437
"""If socketfd is set, use that file descriptor instead of
2438
creating a new one with socket.socket().
1535
2440
self.interface = interface
1537
2442
self.address_family = socket.AF_INET6
2443
if socketfd is not None:
2444
# Save the file descriptor
2445
self.socketfd = socketfd
2446
# Save the original socket.socket() function
2447
self.socket_socket = socket.socket
2449
# To implement --socket, we monkey patch socket.socket.
2451
# (When socketserver.TCPServer is a new-style class, we
2452
# could make self.socket into a property instead of monkey
2453
# patching socket.socket.)
2455
# Create a one-time-only replacement for socket.socket()
2456
@functools.wraps(socket.socket)
2457
def socket_wrapper(*args, **kwargs):
2458
# Restore original function so subsequent calls are
2460
socket.socket = self.socket_socket
2461
del self.socket_socket
2462
# This time only, return a new socket object from the
2463
# saved file descriptor.
2464
return socket.fromfd(self.socketfd, *args, **kwargs)
2465
# Replace socket.socket() function with wrapper
2466
socket.socket = socket_wrapper
2467
# The socketserver.TCPServer.__init__ will call
2468
# socket.socket(), which might be our replacement,
2469
# socket_wrapper(), if socketfd was set.
1538
2470
socketserver.TCPServer.__init__(self, server_address,
1539
2471
RequestHandlerClass)
1540
2473
def server_bind(self):
1541
2474
"""This overrides the normal server_bind() function
1542
2475
to bind to an interface if one was specified, and also NOT to
1543
2476
bind to an address or port if they were not specified."""
2477
global SO_BINDTODEVICE
1544
2478
if self.interface is not None:
1545
2479
if SO_BINDTODEVICE is None:
1546
logger.error("SO_BINDTODEVICE does not exist;"
1547
" cannot bind to interface %s",
1551
self.socket.setsockopt(socket.SOL_SOCKET,
1555
except socket.error as error:
1556
if error[0] == errno.EPERM:
1557
logger.error("No permission to"
1558
" bind to interface %s",
1560
elif error[0] == errno.ENOPROTOOPT:
1561
logger.error("SO_BINDTODEVICE not available;"
1562
" cannot bind to interface %s",
2480
# Fall back to a hard-coded value which seems to be
2482
logger.warning("SO_BINDTODEVICE not found, trying 25")
2483
SO_BINDTODEVICE = 25
2485
self.socket.setsockopt(
2486
socket.SOL_SOCKET, SO_BINDTODEVICE,
2487
(self.interface + "\0").encode("utf-8"))
2488
except socket.error as error:
2489
if error.errno == errno.EPERM:
2490
logger.error("No permission to bind to"
2491
" interface %s", self.interface)
2492
elif error.errno == errno.ENOPROTOOPT:
2493
logger.error("SO_BINDTODEVICE not available;"
2494
" cannot bind to interface %s",
2496
elif error.errno == errno.ENODEV:
2497
logger.error("Interface %s does not exist,"
2498
" cannot bind", self.interface)
1566
2501
# Only bind(2) the socket if we really need to.
1567
2502
if self.server_address[0] or self.server_address[1]:
1568
2503
if not self.server_address[0]:
1569
2504
if self.address_family == socket.AF_INET6:
1570
any_address = "::" # in6addr_any
2505
any_address = "::" # in6addr_any
1572
any_address = socket.INADDR_ANY
2507
any_address = "0.0.0.0" # INADDR_ANY
1573
2508
self.server_address = (any_address,
1574
2509
self.server_address[1])
1575
2510
elif not self.server_address[1]:
1576
self.server_address = (self.server_address[0],
2511
self.server_address = (self.server_address[0], 0)
1578
2512
# if self.interface:
1579
2513
# self.server_address = (self.server_address[0],
1656
2591
"dress: %s", fpr, address)
1657
2592
if self.use_dbus:
1658
2593
# Emit D-Bus signal
1659
mandos_dbus_service.ClientNotFound(fpr, address[0])
2594
mandos_dbus_service.ClientNotFound(fpr,
1660
2596
parent_pipe.send(False)
1663
gobject.io_add_watch(parent_pipe.fileno(),
1664
gobject.IO_IN | gobject.IO_HUP,
1665
functools.partial(self.handle_ipc,
1666
parent_pipe = parent_pipe,
1667
client_object = client))
2600
parent_pipe.fileno(),
2601
GLib.IO_IN | GLib.IO_HUP,
2602
functools.partial(self.handle_ipc,
2603
parent_pipe=parent_pipe,
2605
client_object=client))
1668
2606
parent_pipe.send(True)
1669
# remove the old hook in favor of the new above hook on same fileno
2607
# remove the old hook in favor of the new above hook on
1671
2610
if command == 'funcall':
1672
2611
funcname = request[1]
1673
2612
args = request[2]
1674
2613
kwargs = request[3]
1676
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2615
parent_pipe.send(('data', getattr(client_object,
1678
2619
if command == 'getattr':
1679
2620
attrname = request[1]
1680
if callable(client_object.__getattribute__(attrname)):
1681
parent_pipe.send(('function',))
2621
if isinstance(client_object.__getattribute__(attrname),
2622
collections.Callable):
2623
parent_pipe.send(('function', ))
1683
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2626
'data', client_object.__getattribute__(attrname)))
1685
2628
if command == 'setattr':
1686
2629
attrname = request[1]
1687
2630
value = request[2]
1688
2631
setattr(client_object, attrname, value)
2636
def rfc3339_duration_to_delta(duration):
2637
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2639
>>> rfc3339_duration_to_delta("P7D")
2640
datetime.timedelta(7)
2641
>>> rfc3339_duration_to_delta("PT60S")
2642
datetime.timedelta(0, 60)
2643
>>> rfc3339_duration_to_delta("PT60M")
2644
datetime.timedelta(0, 3600)
2645
>>> rfc3339_duration_to_delta("PT24H")
2646
datetime.timedelta(1)
2647
>>> rfc3339_duration_to_delta("P1W")
2648
datetime.timedelta(7)
2649
>>> rfc3339_duration_to_delta("PT5M30S")
2650
datetime.timedelta(0, 330)
2651
>>> rfc3339_duration_to_delta("P1DT3M20S")
2652
datetime.timedelta(1, 200)
2655
# Parsing an RFC 3339 duration with regular expressions is not
2656
# possible - there would have to be multiple places for the same
2657
# values, like seconds. The current code, while more esoteric, is
2658
# cleaner without depending on a parsing library. If Python had a
2659
# built-in library for parsing we would use it, but we'd like to
2660
# avoid excessive use of external libraries.
2662
# New type for defining tokens, syntax, and semantics all-in-one
2663
Token = collections.namedtuple("Token", (
2664
"regexp", # To match token; if "value" is not None, must have
2665
# a "group" containing digits
2666
"value", # datetime.timedelta or None
2667
"followers")) # Tokens valid after this token
2668
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2669
# the "duration" ABNF definition in RFC 3339, Appendix A.
2670
token_end = Token(re.compile(r"$"), None, frozenset())
2671
token_second = Token(re.compile(r"(\d+)S"),
2672
datetime.timedelta(seconds=1),
2673
frozenset((token_end, )))
2674
token_minute = Token(re.compile(r"(\d+)M"),
2675
datetime.timedelta(minutes=1),
2676
frozenset((token_second, token_end)))
2677
token_hour = Token(re.compile(r"(\d+)H"),
2678
datetime.timedelta(hours=1),
2679
frozenset((token_minute, token_end)))
2680
token_time = Token(re.compile(r"T"),
2682
frozenset((token_hour, token_minute,
2684
token_day = Token(re.compile(r"(\d+)D"),
2685
datetime.timedelta(days=1),
2686
frozenset((token_time, token_end)))
2687
token_month = Token(re.compile(r"(\d+)M"),
2688
datetime.timedelta(weeks=4),
2689
frozenset((token_day, token_end)))
2690
token_year = Token(re.compile(r"(\d+)Y"),
2691
datetime.timedelta(weeks=52),
2692
frozenset((token_month, token_end)))
2693
token_week = Token(re.compile(r"(\d+)W"),
2694
datetime.timedelta(weeks=1),
2695
frozenset((token_end, )))
2696
token_duration = Token(re.compile(r"P"), None,
2697
frozenset((token_year, token_month,
2698
token_day, token_time,
2700
# Define starting values:
2702
value = datetime.timedelta()
2704
# Following valid tokens
2705
followers = frozenset((token_duration, ))
2706
# String left to parse
2708
# Loop until end token is found
2709
while found_token is not token_end:
2710
# Search for any currently valid tokens
2711
for token in followers:
2712
match = token.regexp.match(s)
2713
if match is not None:
2715
if token.value is not None:
2716
# Value found, parse digits
2717
factor = int(match.group(1), 10)
2718
# Add to value so far
2719
value += factor * token.value
2720
# Strip token from string
2721
s = token.regexp.sub("", s, 1)
2724
# Set valid next tokens
2725
followers = found_token.followers
2728
# No currently valid tokens were found
2729
raise ValueError("Invalid RFC 3339 duration: {!r}"
1693
2735
def string_to_delta(interval):
1694
2736
"""Parse a string and return a datetime.timedelta
1696
2738
>>> string_to_delta('7d')
1697
2739
datetime.timedelta(7)
1698
2740
>>> string_to_delta('60s')
1811
2835
parser.add_argument("--no-dbus", action="store_false",
1812
2836
dest="use_dbus", help="Do not provide D-Bus"
1813
" system bus interface")
2837
" system bus interface", default=None)
1814
2838
parser.add_argument("--no-ipv6", action="store_false",
1815
dest="use_ipv6", help="Do not use IPv6")
2839
dest="use_ipv6", help="Do not use IPv6",
2841
parser.add_argument("--no-restore", action="store_false",
2842
dest="restore", help="Do not restore stored"
2843
" state", default=None)
2844
parser.add_argument("--socket", type=int,
2845
help="Specify a file descriptor to a network"
2846
" socket to use instead of creating one")
2847
parser.add_argument("--statedir", metavar="DIR",
2848
help="Directory to save/restore state in")
2849
parser.add_argument("--foreground", action="store_true",
2850
help="Run in foreground", default=None)
2851
parser.add_argument("--no-zeroconf", action="store_false",
2852
dest="zeroconf", help="Do not use Zeroconf",
1816
2855
options = parser.parse_args()
1818
2857
if options.check:
2859
fail_count, test_count = doctest.testmod()
2860
sys.exit(os.EX_OK if fail_count == 0 else 1)
1823
2862
# Default values for config file for server-global settings
1824
server_defaults = { "interface": "",
1829
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1830
"servicename": "Mandos",
2863
server_defaults = {"interface": "",
2868
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2869
":+SIGN-DSA-SHA256",
2870
"servicename": "Mandos",
2876
"statedir": "/var/lib/mandos",
2877
"foreground": "False",
1836
2881
# Parse config file for server-global settings
1837
2882
server_config = configparser.SafeConfigParser(server_defaults)
1838
2883
del server_defaults
1839
server_config.read(os.path.join(options.configdir,
2884
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1841
2885
# Convert the SafeConfigParser object to a dict
1842
2886
server_settings = server_config.defaults()
1843
2887
# Use the appropriate methods on the non-string config options
1844
for option in ("debug", "use_dbus", "use_ipv6"):
2888
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2889
"foreground", "zeroconf"):
1845
2890
server_settings[option] = server_config.getboolean("DEFAULT",
1847
2892
if server_settings["port"]:
1848
2893
server_settings["port"] = server_config.getint("DEFAULT",
2895
if server_settings["socket"]:
2896
server_settings["socket"] = server_config.getint("DEFAULT",
2898
# Later, stdin will, and stdout and stderr might, be dup'ed
2899
# over with an opened os.devnull. But we don't want this to
2900
# happen with a supplied network socket.
2901
if 0 <= server_settings["socket"] <= 2:
2902
server_settings["socket"] = os.dup(server_settings
1850
2904
del server_config
1852
2906
# Override the settings from the config file with command line
1853
2907
# options, if set.
1854
2908
for option in ("interface", "address", "port", "debug",
1855
"priority", "servicename", "configdir",
1856
"use_dbus", "use_ipv6", "debuglevel"):
2909
"priority", "servicename", "configdir", "use_dbus",
2910
"use_ipv6", "debuglevel", "restore", "statedir",
2911
"socket", "foreground", "zeroconf"):
1857
2912
value = getattr(options, option)
1858
2913
if value is not None:
1859
2914
server_settings[option] = value
1861
2916
# Force all strings to be unicode
1862
2917
for option in server_settings.keys():
1863
if type(server_settings[option]) is str:
1864
server_settings[option] = unicode(server_settings[option])
2918
if isinstance(server_settings[option], bytes):
2919
server_settings[option] = (server_settings[option]
2921
# Force all boolean options to be boolean
2922
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2923
"foreground", "zeroconf"):
2924
server_settings[option] = bool(server_settings[option])
2925
# Debug implies foreground
2926
if server_settings["debug"]:
2927
server_settings["foreground"] = True
1865
2928
# Now we have our good server settings in "server_settings"
1867
2930
##################################################################
2932
if (not server_settings["zeroconf"]
2933
and not (server_settings["port"]
2934
or server_settings["socket"] != "")):
2935
parser.error("Needs port or socket to work without Zeroconf")
1869
2937
# For convenience
1870
2938
debug = server_settings["debug"]
1871
2939
debuglevel = server_settings["debuglevel"]
1872
2940
use_dbus = server_settings["use_dbus"]
1873
2941
use_ipv6 = server_settings["use_ipv6"]
2942
stored_state_path = os.path.join(server_settings["statedir"],
2944
foreground = server_settings["foreground"]
2945
zeroconf = server_settings["zeroconf"]
2948
initlogger(debug, logging.DEBUG)
2953
level = getattr(logging, debuglevel.upper())
2954
initlogger(debug, level)
1875
2956
if server_settings["servicename"] != "Mandos":
1876
syslogger.setFormatter(logging.Formatter
1877
('Mandos (%s) [%%(process)d]:'
1878
' %%(levelname)s: %%(message)s'
1879
% server_settings["servicename"]))
2957
syslogger.setFormatter(
2958
logging.Formatter('Mandos ({}) [%(process)d]:'
2959
' %(levelname)s: %(message)s'.format(
2960
server_settings["servicename"])))
1881
2962
# Parse config file with clients
1882
client_defaults = { "timeout": "5m",
1883
"extended_timeout": "15m",
1885
"checker": "fping -q -- %%(host)s",
1887
"approval_delay": "0s",
1888
"approval_duration": "1s",
1890
client_config = configparser.SafeConfigParser(client_defaults)
2963
client_config = configparser.SafeConfigParser(Client
1891
2965
client_config.read(os.path.join(server_settings["configdir"],
1892
2966
"clients.conf"))
1894
2968
global mandos_dbus_service
1895
2969
mandos_dbus_service = None
1897
tcp_server = MandosServer((server_settings["address"],
1898
server_settings["port"]),
1900
interface=(server_settings["interface"]
1904
server_settings["priority"],
1907
pidfilename = "/var/run/mandos.pid"
1909
pidfile = open(pidfilename, "w")
1911
logger.error("Could not open file %r", pidfilename)
1914
uid = pwd.getpwnam("_mandos").pw_uid
1915
gid = pwd.getpwnam("_mandos").pw_gid
1918
uid = pwd.getpwnam("mandos").pw_uid
1919
gid = pwd.getpwnam("mandos").pw_gid
2972
if server_settings["socket"] != "":
2973
socketfd = server_settings["socket"]
2974
tcp_server = MandosServer(
2975
(server_settings["address"], server_settings["port"]),
2977
interface=(server_settings["interface"] or None),
2979
gnutls_priority=server_settings["priority"],
2983
pidfilename = "/run/mandos.pid"
2984
if not os.path.isdir("/run/."):
2985
pidfilename = "/var/run/mandos.pid"
2988
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2989
except IOError as e:
2990
logger.error("Could not open file %r", pidfilename,
2993
for name, group in (("_mandos", "_mandos"),
2994
("mandos", "mandos"),
2995
("nobody", "nogroup")):
2997
uid = pwd.getpwnam(name).pw_uid
2998
gid = pwd.getpwnam(group).pw_gid
1920
3000
except KeyError:
1922
uid = pwd.getpwnam("nobody").pw_uid
1923
gid = pwd.getpwnam("nobody").pw_gid
3009
logger.debug("Did setuid/setgid to {}:{}".format(uid,
1930
3011
except OSError as error:
1931
if error[0] != errno.EPERM:
1934
if not debug and not debuglevel:
1935
syslogger.setLevel(logging.WARNING)
1936
console.setLevel(logging.WARNING)
1938
level = getattr(logging, debuglevel.upper())
1939
syslogger.setLevel(level)
1940
console.setLevel(level)
3012
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3013
.format(uid, gid, os.strerror(error.errno)))
3014
if error.errno != errno.EPERM:
1943
3018
# Enable all possible GnuTLS debugging
1945
3020
# "Use a log level over 10 to enable all debugging options."
1946
3021
# - GnuTLS manual
1947
gnutls.library.functions.gnutls_global_set_log_level(11)
1949
@gnutls.library.types.gnutls_log_func
3022
gnutls.global_set_log_level(11)
1950
3025
def debug_gnutls(level, string):
1951
3026
logger.debug("GnuTLS: %s", string[:-1])
1953
(gnutls.library.functions
1954
.gnutls_global_set_log_function(debug_gnutls))
3028
gnutls.global_set_log_function(debug_gnutls)
1956
3030
# Redirect stdin so all checkers get /dev/null
1957
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3031
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1958
3032
os.dup2(null, sys.stdin.fileno())
1962
# No console logging
1963
logger.removeHandler(console)
1965
3036
# Need to fork before connecting to D-Bus
1967
3038
# Close all input and output, do double fork, etc.
3041
# multiprocessing will use threads, so before we use GLib we need
3042
# to inform GLib that threads will be used.
1970
3045
global main_loop
1971
3046
# From the Avahi example code
1972
DBusGMainLoop(set_as_default=True )
1973
main_loop = gobject.MainLoop()
3047
DBusGMainLoop(set_as_default=True)
3048
main_loop = GLib.MainLoop()
1974
3049
bus = dbus.SystemBus()
1975
3050
# End of Avahi example code
1978
3053
bus_name = dbus.service.BusName("se.recompile.Mandos",
1979
bus, do_not_queue=True)
1980
old_bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1981
bus, do_not_queue=True)
1982
except dbus.exceptions.NameExistsException as e:
1983
logger.error(unicode(e) + ", disabling D-Bus")
3056
old_bus_name = dbus.service.BusName(
3057
"se.bsnet.fukt.Mandos", bus,
3059
except dbus.exceptions.DBusException as e:
3060
logger.error("Disabling D-Bus:", exc_info=e)
1984
3061
use_dbus = False
1985
3062
server_settings["use_dbus"] = False
1986
3063
tcp_server.use_dbus = False
1987
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1988
service = AvahiService(name = server_settings["servicename"],
1989
servicetype = "_mandos._tcp",
1990
protocol = protocol, bus = bus)
1991
if server_settings["interface"]:
1992
service.interface = (if_nametoindex
1993
(str(server_settings["interface"])))
3065
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3066
service = AvahiServiceToSyslog(
3067
name=server_settings["servicename"],
3068
servicetype="_mandos._tcp",
3071
if server_settings["interface"]:
3072
service.interface = if_nametoindex(
3073
server_settings["interface"].encode("utf-8"))
1995
3075
global multiprocessing_manager
1996
3076
multiprocessing_manager = multiprocessing.Manager()
1998
3078
client_class = Client
2000
client_class = functools.partial(ClientDBusTransitional, bus = bus)
2001
def client_config_items(config, section):
2002
special_settings = {
2003
"approved_by_default":
2004
lambda: config.getboolean(section,
2005
"approved_by_default"),
2007
for name, value in config.items(section):
3080
client_class = functools.partial(ClientDBus, bus=bus)
3082
client_settings = Client.config_parser(client_config)
3083
old_client_settings = {}
3086
# This is used to redirect stdout and stderr for checker processes
3088
wnull = open(os.devnull, "w") # A writable /dev/null
3089
# Only used if server is running in foreground but not in debug
3091
if debug or not foreground:
3094
# Get client data and settings from last running state.
3095
if server_settings["restore"]:
3097
with open(stored_state_path, "rb") as stored_state:
3098
if sys.version_info.major == 2:
3099
clients_data, old_client_settings = pickle.load(
3102
bytes_clients_data, bytes_old_client_settings = (
3103
pickle.load(stored_state, encoding="bytes"))
3104
# Fix bytes to strings
3107
clients_data = {(key.decode("utf-8")
3108
if isinstance(key, bytes)
3111
bytes_clients_data.items()}
3112
del bytes_clients_data
3113
for key in clients_data:
3114
value = {(k.decode("utf-8")
3115
if isinstance(k, bytes) else k): v
3117
clients_data[key].items()}
3118
clients_data[key] = value
3120
value["client_structure"] = [
3122
if isinstance(s, bytes)
3124
value["client_structure"]]
3126
for k in ("name", "host"):
3127
if isinstance(value[k], bytes):
3128
value[k] = value[k].decode("utf-8")
3129
# old_client_settings
3131
old_client_settings = {
3132
(key.decode("utf-8")
3133
if isinstance(key, bytes)
3136
bytes_old_client_settings.items()}
3137
del bytes_old_client_settings
3139
for value in old_client_settings.values():
3140
if isinstance(value["host"], bytes):
3141
value["host"] = (value["host"]
3143
os.remove(stored_state_path)
3144
except IOError as e:
3145
if e.errno == errno.ENOENT:
3146
logger.warning("Could not load persistent state:"
3147
" {}".format(os.strerror(e.errno)))
3149
logger.critical("Could not load persistent state:",
3152
except EOFError as e:
3153
logger.warning("Could not load persistent state: "
3157
with PGPEngine() as pgp:
3158
for client_name, client in clients_data.items():
3159
# Skip removed clients
3160
if client_name not in client_settings:
3163
# Decide which value to use after restoring saved state.
3164
# We have three different values: Old config file,
3165
# new config file, and saved state.
3166
# New config value takes precedence if it differs from old
3167
# config value, otherwise use saved state.
3168
for name, value in client_settings[client_name].items():
3170
# For each value in new config, check if it
3171
# differs from the old config value (Except for
3172
# the "secret" attribute)
3173
if (name != "secret"
3175
old_client_settings[client_name][name])):
3176
client[name] = value
3180
# Clients who has passed its expire date can still be
3181
# enabled if its last checker was successful. A Client
3182
# whose checker succeeded before we stored its state is
3183
# assumed to have successfully run all checkers during
3185
if client["enabled"]:
3186
if datetime.datetime.utcnow() >= client["expires"]:
3187
if not client["last_checked_ok"]:
3189
"disabling client {} - Client never "
3190
"performed a successful checker".format(
3192
client["enabled"] = False
3193
elif client["last_checker_status"] != 0:
3195
"disabling client {} - Client last"
3196
" checker failed with error code"
3199
client["last_checker_status"]))
3200
client["enabled"] = False
3202
client["expires"] = (
3203
datetime.datetime.utcnow()
3204
+ client["timeout"])
3205
logger.debug("Last checker succeeded,"
3206
" keeping {} enabled".format(
2009
yield (name, special_settings[name]())
2013
tcp_server.clients.update(set(
2014
client_class(name = section,
2015
config= dict(client_config_items(
2016
client_config, section)))
2017
for section in client_config.sections()))
3209
client["secret"] = pgp.decrypt(
3210
client["encrypted_secret"],
3211
client_settings[client_name]["secret"])
3213
# If decryption fails, we use secret from new settings
3214
logger.debug("Failed to decrypt {} old secret".format(
3216
client["secret"] = (client_settings[client_name]
3219
# Add/remove clients based on new changes made to config
3220
for client_name in (set(old_client_settings)
3221
- set(client_settings)):
3222
del clients_data[client_name]
3223
for client_name in (set(client_settings)
3224
- set(old_client_settings)):
3225
clients_data[client_name] = client_settings[client_name]
3227
# Create all client objects
3228
for client_name, client in clients_data.items():
3229
tcp_server.clients[client_name] = client_class(
3232
server_settings=server_settings)
2018
3234
if not tcp_server.clients:
2019
3235
logger.warning("No clients defined")
2025
pidfile.write(str(pid) + "\n".encode("utf-8"))
2028
logger.error("Could not write to file %r with PID %d",
2031
# "pidfile" was never created
3238
if pidfile is not None:
3242
print(pid, file=pidfile)
3244
logger.error("Could not write to file %r with PID %d",
2033
3247
del pidfilename
2035
signal.signal(signal.SIGINT, signal.SIG_IGN)
2037
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2038
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3249
for termsig in (signal.SIGHUP, signal.SIGTERM):
3250
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3251
lambda: main_loop.quit() and False)
2041
class MandosDBusService(dbus.service.Object):
3255
@alternate_dbus_interfaces(
3256
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3257
class MandosDBusService(DBusObjectWithObjectManager):
2042
3258
"""A D-Bus proxy object"""
2043
3260
def __init__(self):
2044
3261
dbus.service.Object.__init__(self, bus, "/")
2045
3263
_interface = "se.recompile.Mandos"
2047
3265
@dbus.service.signal(_interface, signature="o")
2048
3266
def ClientAdded(self, objpath):
2052
3270
@dbus.service.signal(_interface, signature="ss")
2053
3271
def ClientNotFound(self, fingerprint, address):
3275
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2057
3277
@dbus.service.signal(_interface, signature="os")
2058
3278
def ClientRemoved(self, objpath, name):
3282
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2062
3284
@dbus.service.method(_interface, out_signature="ao")
2063
3285
def GetAllClients(self):
2065
return dbus.Array(c.dbus_object_path
2066
for c in tcp_server.clients)
3287
return dbus.Array(c.dbus_object_path for c in
3288
tcp_server.clients.values())
3290
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2068
3292
@dbus.service.method(_interface,
2069
3293
out_signature="a{oa{sv}}")
2070
3294
def GetAllClientsWithProperties(self):
2072
3296
return dbus.Dictionary(
2073
((c.dbus_object_path, c.GetAll(""))
2074
for c in tcp_server.clients),
3297
{c.dbus_object_path: c.GetAll(
3298
"se.recompile.Mandos.Client")
3299
for c in tcp_server.clients.values()},
2075
3300
signature="oa{sv}")
2077
3302
@dbus.service.method(_interface, in_signature="o")
2078
3303
def RemoveClient(self, object_path):
2080
for c in tcp_server.clients:
3305
for c in tcp_server.clients.values():
2081
3306
if c.dbus_object_path == object_path:
2082
tcp_server.clients.remove(c)
3307
del tcp_server.clients[c.name]
2083
3308
c.remove_from_connection()
2084
# Don't signal anything except ClientRemoved
3309
# Don't signal the disabling
2085
3310
c.disable(quiet=True)
2087
self.ClientRemoved(object_path, c.name)
3311
# Emit D-Bus signal for removal
3312
self.client_removed_signal(c)
2089
3314
raise KeyError(object_path)
2093
class MandosDBusServiceTransitional(MandosDBusService):
2094
__metaclass__ = AlternateDBusNamesMetaclass
2095
mandos_dbus_service = MandosDBusServiceTransitional()
3318
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3319
out_signature="a{oa{sa{sv}}}")
3320
def GetManagedObjects(self):
3322
return dbus.Dictionary(
3323
{client.dbus_object_path:
3325
{interface: client.GetAll(interface)
3327
client._get_all_interface_names()})
3328
for client in tcp_server.clients.values()})
3330
def client_added_signal(self, client):
3331
"""Send the new standard signal and the old signal"""
3333
# New standard signal
3334
self.InterfacesAdded(
3335
client.dbus_object_path,
3337
{interface: client.GetAll(interface)
3339
client._get_all_interface_names()}))
3341
self.ClientAdded(client.dbus_object_path)
3343
def client_removed_signal(self, client):
3344
"""Send the new standard signal and the old signal"""
3346
# New standard signal
3347
self.InterfacesRemoved(
3348
client.dbus_object_path,
3349
client._get_all_interface_names())
3351
self.ClientRemoved(client.dbus_object_path,
3354
mandos_dbus_service = MandosDBusService()
3356
# Save modules to variables to exempt the modules from being
3357
# unloaded before the function registered with atexit() is run.
3358
mp = multiprocessing
2098
3362
"Cleanup function; run on exit"
3366
mp.active_children()
3368
if not (tcp_server.clients or client_settings):
3371
# Store client before exiting. Secrets are encrypted with key
3372
# based on what config file has. If config file is
3373
# removed/edited, old secret will thus be unrecovable.
3375
with PGPEngine() as pgp:
3376
for client in tcp_server.clients.values():
3377
key = client_settings[client.name]["secret"]
3378
client.encrypted_secret = pgp.encrypt(client.secret,
3382
# A list of attributes that can not be pickled
3384
exclude = {"bus", "changedstate", "secret",
3385
"checker", "server_settings"}
3386
for name, typ in inspect.getmembers(dbus.service
3390
client_dict["encrypted_secret"] = (client
3392
for attr in client.client_structure:
3393
if attr not in exclude:
3394
client_dict[attr] = getattr(client, attr)
3396
clients[client.name] = client_dict
3397
del client_settings[client.name]["secret"]
3400
with tempfile.NamedTemporaryFile(
3404
dir=os.path.dirname(stored_state_path),
3405
delete=False) as stored_state:
3406
pickle.dump((clients, client_settings), stored_state,
3408
tempname = stored_state.name
3409
os.rename(tempname, stored_state_path)
3410
except (IOError, OSError) as e:
3416
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3417
logger.warning("Could not save persistent state: {}"
3418
.format(os.strerror(e.errno)))
3420
logger.warning("Could not save persistent state:",
3424
# Delete all clients, and settings from config
2101
3425
while tcp_server.clients:
2102
client = tcp_server.clients.pop()
3426
name, client = tcp_server.clients.popitem()
2104
3428
client.remove_from_connection()
2105
client.disable_hook = None
2106
# Don't signal anything except ClientRemoved
3429
# Don't signal the disabling
2107
3430
client.disable(quiet=True)
3431
# Emit D-Bus signal for removal
2110
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
3433
mandos_dbus_service.client_removed_signal(client)
3434
client_settings.clear()
2113
3436
atexit.register(cleanup)
2115
for client in tcp_server.clients:
3438
for client in tcp_server.clients.values():
2118
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3440
# Emit D-Bus signal for adding
3441
mandos_dbus_service.client_added_signal(client)
3442
# Need to initiate checking of clients
3444
client.init_checker()
2121
3446
tcp_server.enable()
2122
3447
tcp_server.server_activate()
2124
3449
# Find out what port we got
2125
service.port = tcp_server.socket.getsockname()[1]
3451
service.port = tcp_server.socket.getsockname()[1]
2127
3453
logger.info("Now listening on address %r, port %d,"
2128
" flowinfo %d, scope_id %d"
2129
% tcp_server.socket.getsockname())
3454
" flowinfo %d, scope_id %d",
3455
*tcp_server.socket.getsockname())
2131
logger.info("Now listening on address %r, port %d"
2132
% tcp_server.socket.getsockname())
2134
#service.interface = tcp_server.socket.getsockname()[3]
3457
logger.info("Now listening on address %r, port %d",
3458
*tcp_server.socket.getsockname())
3460
# service.interface = tcp_server.socket.getsockname()[3]
2137
# From the Avahi example code
2140
except dbus.exceptions.DBusException as error:
2141
logger.critical("DBusException: %s", error)
2144
# End of Avahi example code
2146
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2147
lambda *args, **kwargs:
2148
(tcp_server.handle_request
2149
(*args[2:], **kwargs) or True))
3464
# From the Avahi example code
3467
except dbus.exceptions.DBusException as error:
3468
logger.critical("D-Bus Exception", exc_info=error)
3471
# End of Avahi example code
3473
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3474
lambda *args, **kwargs:
3475
(tcp_server.handle_request
3476
(*args[2:], **kwargs) or True))
2151
3478
logger.debug("Starting main loop")
2152
3479
main_loop.run()
2153
3480
except AvahiError as error:
2154
logger.critical("AvahiError: %s", error)
3481
logger.critical("Avahi Error", exc_info=error)
2157
3484
except KeyboardInterrupt: