70
import cPickle as pickle
63
import cPickle as pickle
73
64
import multiprocessing
83
70
import dbus.service
85
from gi.repository import GLib
86
73
from dbus.mainloop.glib import DBusGMainLoop
89
76
import xml.dom.minidom
92
if sys.version_info.major == 2:
95
# Show warnings by default
96
if not sys.warnoptions:
98
warnings.simplefilter("default")
100
# Try to find the value of SO_BINDTODEVICE:
102
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
103
# newer, and it is also the most natural place for it:
104
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
105
82
except AttributeError:
107
# This is where SO_BINDTODEVICE was up to and including Python
109
84
from IN import SO_BINDTODEVICE
110
85
except ImportError:
111
# In Python 2.7 it seems to have been removed entirely.
112
# Try running the C preprocessor:
114
cc = subprocess.Popen(["cc", "--language=c", "-E",
116
stdin=subprocess.PIPE,
117
stdout=subprocess.PIPE)
118
stdout = cc.communicate(
119
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
120
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
121
except (OSError, ValueError, IndexError):
123
SO_BINDTODEVICE = None
125
if sys.version_info.major == 2:
128
if sys.version_info < (3, 2):
129
configparser.Configparser = configparser.SafeConfigParser
86
SO_BINDTODEVICE = None
132
89
stored_state_file = "clients.pickle"
134
91
logger = logging.getLogger()
135
logging.captureWarnings(True) # Show warnings via the logging system
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
139
if_nametoindex = ctypes.cdll.LoadLibrary(
140
ctypes.util.find_library("c")).if_nametoindex
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
141
100
except (OSError, AttributeError):
143
101
def if_nametoindex(interface):
144
102
"Get an interface index the hard way, i.e. using fcntl()"
145
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
146
104
with contextlib.closing(socket.socket()) as s:
147
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
148
struct.pack(b"16s16x", interface))
149
interface_index = struct.unpack("I", ifreq[16:20])[0]
106
struct.pack(str("16s16x"),
108
interface_index = struct.unpack(str("I"),
150
110
return interface_index
153
def copy_function(func):
154
"""Make a copy of a function"""
155
if sys.version_info.major == 2:
156
return types.FunctionType(func.func_code,
162
return types.FunctionType(func.__code__,
169
113
def initlogger(debug, level=logging.WARNING):
170
114
"""init logger and add loglevel"""
173
syslogger = (logging.handlers.SysLogHandler(
174
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
176
116
syslogger.setFormatter(logging.Formatter
177
117
('Mandos [%(process)d]: %(levelname)s:'
179
119
logger.addHandler(syslogger)
182
122
console = logging.StreamHandler()
183
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
240
168
os.rmdir(self.tempdir)
241
169
self.tempdir = None
243
171
def password_encode(self, password):
244
172
# Passphrase can not be empty and can not contain newlines or
245
173
# NUL bytes. So we prefix it and hex encode it.
246
encoded = b"mandos" + binascii.hexlify(password)
247
if len(encoded) > 2048:
248
# GnuPG can't handle long passwords, so encode differently
249
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
250
.replace(b"\n", b"\\n")
251
.replace(b"\0", b"\\x00"))
174
return b"mandos" + binascii.hexlify(password)
254
176
def encrypt(self, data, password):
255
passphrase = self.password_encode(password)
256
with tempfile.NamedTemporaryFile(
257
dir=self.tempdir) as passfile:
258
passfile.write(passphrase)
260
proc = subprocess.Popen([self.gpg, '--symmetric',
264
stdin=subprocess.PIPE,
265
stdout=subprocess.PIPE,
266
stderr=subprocess.PIPE)
267
ciphertext, err = proc.communicate(input=data)
268
if proc.returncode != 0:
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
190
self.gnupg.passphrase = None
270
191
return ciphertext
272
193
def decrypt(self, data, password):
273
passphrase = self.password_encode(password)
274
with tempfile.NamedTemporaryFile(
275
dir=self.tempdir) as passfile:
276
passfile.write(passphrase)
278
proc = subprocess.Popen([self.gpg, '--decrypt',
282
stdin=subprocess.PIPE,
283
stdout=subprocess.PIPE,
284
stderr=subprocess.PIPE)
285
decrypted_plaintext, err = proc.communicate(input=data)
286
if proc.returncode != 0:
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
207
self.gnupg.passphrase = None
288
208
return decrypted_plaintext
291
# Pretend that we have an Avahi module
293
"""This isn't so much a class as it is a module-like namespace."""
294
IF_UNSPEC = -1 # avahi-common/address.h
295
PROTO_UNSPEC = -1 # avahi-common/address.h
296
PROTO_INET = 0 # avahi-common/address.h
297
PROTO_INET6 = 1 # avahi-common/address.h
298
DBUS_NAME = "org.freedesktop.Avahi"
299
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
300
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
301
DBUS_PATH_SERVER = "/"
304
def string_array_to_txt_array(t):
305
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
306
for s in t), signature="ay")
307
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
308
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
309
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
310
SERVER_INVALID = 0 # avahi-common/defs.h
311
SERVER_REGISTERING = 1 # avahi-common/defs.h
312
SERVER_RUNNING = 2 # avahi-common/defs.h
313
SERVER_COLLISION = 3 # avahi-common/defs.h
314
SERVER_FAILURE = 4 # avahi-common/defs.h
317
212
class AvahiError(Exception):
318
213
def __init__(self, value, *args, **kwargs):
319
214
self.value = value
320
return super(AvahiError, self).__init__(value, *args,
215
super(AvahiError, self).__init__(value, *args, **kwargs)
216
def __unicode__(self):
217
return unicode(repr(self.value))
324
219
class AvahiServiceError(AvahiError):
328
222
class AvahiGroupError(AvahiError):
226
class AvahiService(object):
333
227
"""An Avahi (Zeroconf) service.
336
230
interface: integer; avahi.IF_UNSPEC or an interface index.
337
231
Used to optionally bind to the specified interface.
338
232
name: string; Example: 'Mandos'
339
233
type: string; Example: '_mandos._tcp'.
340
See <https://www.iana.org/assignments/service-names-port-numbers>
234
See <http://www.dns-sd.org/ServiceTypes.html>
341
235
port: integer; what port to announce
342
236
TXT: list of strings; TXT record for the service
343
237
domain: string; Domain to publish on, default to .local if empty.
502
366
follow_name_owner_changes=True),
503
367
avahi.DBUS_INTERFACE_SERVER)
504
368
self.server.connect_to_signal("StateChanged",
505
self.server_state_changed)
369
self.server_state_changed)
506
370
self.server_state_changed(self.server.GetState())
509
372
class AvahiServiceToSyslog(AvahiService):
510
def rename(self, *args, **kwargs):
511
374
"""Add the new name to the syslog messages"""
512
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
513
syslogger.setFormatter(logging.Formatter(
514
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
519
# Pretend that we have a GnuTLS module
521
"""This isn't so much a class as it is a module-like namespace."""
523
library = ctypes.util.find_library("gnutls")
525
library = ctypes.util.find_library("gnutls-deb0")
526
_library = ctypes.cdll.LoadLibrary(library)
529
# Unless otherwise indicated, the constants and types below are
530
# all from the gnutls/gnutls.h C header file.
541
E_NO_CERTIFICATE_FOUND = -49
546
KEYID_USE_SHA256 = 1 # gnutls/x509.h
547
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
550
class session_int(ctypes.Structure):
552
session_t = ctypes.POINTER(session_int)
554
class certificate_credentials_st(ctypes.Structure):
556
certificate_credentials_t = ctypes.POINTER(
557
certificate_credentials_st)
558
certificate_type_t = ctypes.c_int
560
class datum_t(ctypes.Structure):
561
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
562
('size', ctypes.c_uint)]
564
class openpgp_crt_int(ctypes.Structure):
566
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
567
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
568
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
569
credentials_type_t = ctypes.c_int
570
transport_ptr_t = ctypes.c_void_p
571
close_request_t = ctypes.c_int
574
class Error(Exception):
575
def __init__(self, message=None, code=None, args=()):
576
# Default usage is by a message string, but if a return
577
# code is passed, convert it to a string with
580
if message is None and code is not None:
581
message = gnutls.strerror(code)
582
return super(gnutls.Error, self).__init__(
585
class CertificateSecurityError(Error):
591
self._c_object = gnutls.certificate_credentials_t()
592
gnutls.certificate_allocate_credentials(
593
ctypes.byref(self._c_object))
594
self.type = gnutls.CRD_CERTIFICATE
597
gnutls.certificate_free_credentials(self._c_object)
600
def __init__(self, socket, credentials=None):
601
self._c_object = gnutls.session_t()
602
gnutls_flags = gnutls.CLIENT
603
if gnutls.check_version(b"3.5.6"):
604
gnutls_flags |= gnutls.NO_TICKETS
606
gnutls_flags |= gnutls.ENABLE_RAWPK
607
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
609
gnutls.set_default_priority(self._c_object)
610
gnutls.transport_set_ptr(self._c_object, socket.fileno())
611
gnutls.handshake_set_private_extensions(self._c_object,
614
if credentials is None:
615
credentials = gnutls.Credentials()
616
gnutls.credentials_set(self._c_object, credentials.type,
617
ctypes.cast(credentials._c_object,
619
self.credentials = credentials
622
gnutls.deinit(self._c_object)
625
return gnutls.handshake(self._c_object)
627
def send(self, data):
631
data_len -= gnutls.record_send(self._c_object,
636
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
638
# Error handling functions
639
def _error_code(result):
640
"""A function to raise exceptions on errors, suitable
641
for the 'restype' attribute on ctypes functions"""
644
if result == gnutls.E_NO_CERTIFICATE_FOUND:
645
raise gnutls.CertificateSecurityError(code=result)
646
raise gnutls.Error(code=result)
648
def _retry_on_error(result, func, arguments):
649
"""A function to retry on some errors, suitable
650
for the 'errcheck' attribute on ctypes functions"""
652
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
653
return _error_code(result)
654
result = func(*arguments)
657
# Unless otherwise indicated, the function declarations below are
658
# all from the gnutls/gnutls.h C header file.
661
priority_set_direct = _library.gnutls_priority_set_direct
662
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
663
ctypes.POINTER(ctypes.c_char_p)]
664
priority_set_direct.restype = _error_code
666
init = _library.gnutls_init
667
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
668
init.restype = _error_code
670
set_default_priority = _library.gnutls_set_default_priority
671
set_default_priority.argtypes = [session_t]
672
set_default_priority.restype = _error_code
674
record_send = _library.gnutls_record_send
675
record_send.argtypes = [session_t, ctypes.c_void_p,
677
record_send.restype = ctypes.c_ssize_t
678
record_send.errcheck = _retry_on_error
680
certificate_allocate_credentials = (
681
_library.gnutls_certificate_allocate_credentials)
682
certificate_allocate_credentials.argtypes = [
683
ctypes.POINTER(certificate_credentials_t)]
684
certificate_allocate_credentials.restype = _error_code
686
certificate_free_credentials = (
687
_library.gnutls_certificate_free_credentials)
688
certificate_free_credentials.argtypes = [
689
certificate_credentials_t]
690
certificate_free_credentials.restype = None
692
handshake_set_private_extensions = (
693
_library.gnutls_handshake_set_private_extensions)
694
handshake_set_private_extensions.argtypes = [session_t,
696
handshake_set_private_extensions.restype = None
698
credentials_set = _library.gnutls_credentials_set
699
credentials_set.argtypes = [session_t, credentials_type_t,
701
credentials_set.restype = _error_code
703
strerror = _library.gnutls_strerror
704
strerror.argtypes = [ctypes.c_int]
705
strerror.restype = ctypes.c_char_p
707
certificate_type_get = _library.gnutls_certificate_type_get
708
certificate_type_get.argtypes = [session_t]
709
certificate_type_get.restype = _error_code
711
certificate_get_peers = _library.gnutls_certificate_get_peers
712
certificate_get_peers.argtypes = [session_t,
713
ctypes.POINTER(ctypes.c_uint)]
714
certificate_get_peers.restype = ctypes.POINTER(datum_t)
716
global_set_log_level = _library.gnutls_global_set_log_level
717
global_set_log_level.argtypes = [ctypes.c_int]
718
global_set_log_level.restype = None
720
global_set_log_function = _library.gnutls_global_set_log_function
721
global_set_log_function.argtypes = [log_func]
722
global_set_log_function.restype = None
724
deinit = _library.gnutls_deinit
725
deinit.argtypes = [session_t]
726
deinit.restype = None
728
handshake = _library.gnutls_handshake
729
handshake.argtypes = [session_t]
730
handshake.restype = _error_code
731
handshake.errcheck = _retry_on_error
733
transport_set_ptr = _library.gnutls_transport_set_ptr
734
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
735
transport_set_ptr.restype = None
737
bye = _library.gnutls_bye
738
bye.argtypes = [session_t, close_request_t]
739
bye.restype = _error_code
740
bye.errcheck = _retry_on_error
742
check_version = _library.gnutls_check_version
743
check_version.argtypes = [ctypes.c_char_p]
744
check_version.restype = ctypes.c_char_p
746
_need_version = b"3.3.0"
747
if check_version(_need_version) is None:
748
raise self.Error("Needs GnuTLS {} or later"
749
.format(_need_version))
751
_tls_rawpk_version = b"3.6.6"
752
has_rawpk = bool(check_version(_tls_rawpk_version))
756
class pubkey_st(ctypes.Structure):
758
pubkey_t = ctypes.POINTER(pubkey_st)
760
x509_crt_fmt_t = ctypes.c_int
762
# All the function declarations below are from gnutls/abstract.h
763
pubkey_init = _library.gnutls_pubkey_init
764
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
765
pubkey_init.restype = _error_code
767
pubkey_import = _library.gnutls_pubkey_import
768
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
770
pubkey_import.restype = _error_code
772
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
773
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
774
ctypes.POINTER(ctypes.c_ubyte),
775
ctypes.POINTER(ctypes.c_size_t)]
776
pubkey_get_key_id.restype = _error_code
778
pubkey_deinit = _library.gnutls_pubkey_deinit
779
pubkey_deinit.argtypes = [pubkey_t]
780
pubkey_deinit.restype = None
782
# All the function declarations below are from gnutls/openpgp.h
784
openpgp_crt_init = _library.gnutls_openpgp_crt_init
785
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
786
openpgp_crt_init.restype = _error_code
788
openpgp_crt_import = _library.gnutls_openpgp_crt_import
789
openpgp_crt_import.argtypes = [openpgp_crt_t,
790
ctypes.POINTER(datum_t),
792
openpgp_crt_import.restype = _error_code
794
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
795
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
796
ctypes.POINTER(ctypes.c_uint)]
797
openpgp_crt_verify_self.restype = _error_code
799
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
800
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
801
openpgp_crt_deinit.restype = None
803
openpgp_crt_get_fingerprint = (
804
_library.gnutls_openpgp_crt_get_fingerprint)
805
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
809
openpgp_crt_get_fingerprint.restype = _error_code
811
if check_version(b"3.6.4"):
812
certificate_type_get2 = _library.gnutls_certificate_type_get2
813
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
814
certificate_type_get2.restype = _error_code
816
# Remove non-public functions
817
del _error_code, _retry_on_error
820
def call_pipe(connection, # : multiprocessing.Connection
821
func, *args, **kwargs):
822
"""This function is meant to be called by multiprocessing.Process
824
This function runs func(*args, **kwargs), and writes the resulting
825
return value on the provided multiprocessing.Connection.
827
connection.send(func(*args, **kwargs))
382
def timedelta_to_milliseconds(td):
383
"Convert a datetime.timedelta() to milliseconds"
384
return ((td.days * 24 * 60 * 60 * 1000)
385
+ (td.seconds * 1000)
386
+ (td.microseconds // 1000))
388
class Client(object):
832
389
"""A representation of a client host served by this server.
835
392
approved: bool(); 'None' if not yet approved/disapproved
836
393
approval_delay: datetime.timedelta(); Time to wait for approval
837
394
approval_duration: datetime.timedelta(); Duration of one approval
838
checker: multiprocessing.Process(); a running checker process used
839
to see if the client lives. 'None' if no process is
841
checker_callback_tag: a GLib event source tag, or None
395
checker: subprocess.Popen(); a running checker process used
396
to see if the client lives.
397
'None' if no process is running.
398
checker_callback_tag: a gobject event source tag, or None
842
399
checker_command: string; External command which is run to check
843
400
if client lives. %() expansions are done at
844
401
runtime with vars(self) as dict, so that for
845
402
instance %(name)s can be used in the command.
846
checker_initiator_tag: a GLib event source tag, or None
403
checker_initiator_tag: a gobject event source tag, or None
847
404
created: datetime.datetime(); (UTC) object creation
848
405
client_structure: Object describing what attributes a client has
849
406
and is used for storing the client at exit
850
407
current_checker_command: string; current running checker_command
851
disable_initiator_tag: a GLib event source tag, or None
408
disable_initiator_tag: a gobject event source tag, or None
853
410
fingerprint: string (40 or 32 hexadecimal digits); used to
854
uniquely identify an OpenPGP client
855
key_id: string (64 hexadecimal digits); used to uniquely identify
856
a client using raw public keys
411
uniquely identify the client
857
412
host: string; available for use by the checker command
858
413
interval: datetime.timedelta(); How often to start a new checker
859
414
last_approval_request: datetime.datetime(); (UTC) or None
980
541
self.current_checker_command = None
981
542
self.approved = None
982
543
self.approvals_pending = 0
983
self.changedstate = multiprocessing_manager.Condition(
984
multiprocessing_manager.Lock())
985
self.client_structure = [attr
986
for attr in self.__dict__.keys()
544
self.changedstate = (multiprocessing_manager
545
.Condition(multiprocessing_manager
547
self.client_structure = [attr for attr in
548
self.__dict__.iterkeys()
987
549
if not attr.startswith("_")]
988
550
self.client_structure.append("client_structure")
990
for name, t in inspect.getmembers(
991
type(self), lambda obj: isinstance(obj, property)):
552
for name, t in inspect.getmembers(type(self),
992
556
if not name.startswith("_"):
993
557
self.client_structure.append(name)
995
559
# Send notice to process children that client state has changed
996
560
def send_changedstate(self):
997
561
with self.changedstate:
998
562
self.changedstate.notify_all()
1000
564
def enable(self):
1001
565
"""Start this client's checker and timeout hooks"""
1002
566
if getattr(self, "enabled", False):
1003
567
# Already enabled
569
self.send_changedstate()
1005
570
self.expires = datetime.datetime.utcnow() + self.timeout
1006
571
self.enabled = True
1007
572
self.last_enabled = datetime.datetime.utcnow()
1008
573
self.init_checker()
1009
self.send_changedstate()
1011
575
def disable(self, quiet=True):
1012
576
"""Disable this client."""
1013
577
if not getattr(self, "enabled", False):
580
self.send_changedstate()
1016
582
logger.info("Disabling client %s", self.name)
1017
if getattr(self, "disable_initiator_tag", None) is not None:
1018
GLib.source_remove(self.disable_initiator_tag)
583
if getattr(self, "disable_initiator_tag", False):
584
gobject.source_remove(self.disable_initiator_tag)
1019
585
self.disable_initiator_tag = None
1020
586
self.expires = None
1021
if getattr(self, "checker_initiator_tag", None) is not None:
1022
GLib.source_remove(self.checker_initiator_tag)
587
if getattr(self, "checker_initiator_tag", False):
588
gobject.source_remove(self.checker_initiator_tag)
1023
589
self.checker_initiator_tag = None
1024
590
self.stop_checker()
1025
591
self.enabled = False
1027
self.send_changedstate()
1028
# Do not run this again if called by a GLib.timeout_add
592
# Do not run this again if called by a gobject.timeout_add
1031
595
def __del__(self):
1034
598
def init_checker(self):
1035
599
# Schedule a new checker to be started an 'interval' from now,
1036
600
# and every interval from then on.
1037
if self.checker_initiator_tag is not None:
1038
GLib.source_remove(self.checker_initiator_tag)
1039
self.checker_initiator_tag = GLib.timeout_add(
1040
int(self.interval.total_seconds() * 1000),
601
self.checker_initiator_tag = (gobject.timeout_add
602
(self.interval_milliseconds(),
1042
604
# Schedule a disable() when 'timeout' has passed
1043
if self.disable_initiator_tag is not None:
1044
GLib.source_remove(self.disable_initiator_tag)
1045
self.disable_initiator_tag = GLib.timeout_add(
1046
int(self.timeout.total_seconds() * 1000), self.disable)
605
self.disable_initiator_tag = (gobject.timeout_add
606
(self.timeout_milliseconds(),
1047
608
# Also start a new checker *right now*.
1048
609
self.start_checker()
1050
def checker_callback(self, source, condition, connection,
611
def checker_callback(self, pid, condition, command):
1052
612
"""The checker has completed, so take appropriate actions."""
1053
# Read return code from connection (see call_pipe)
1054
returncode = connection.recv()
1056
if self.checker is not None:
1058
613
self.checker_callback_tag = None
1059
614
self.checker = None
1062
self.last_checker_status = returncode
1063
self.last_checker_signal = None
615
if os.WIFEXITED(condition):
616
self.last_checker_status = os.WEXITSTATUS(condition)
1064
617
if self.last_checker_status == 0:
1065
618
logger.info("Checker for %(name)s succeeded",
1067
620
self.checked_ok()
1069
logger.info("Checker for %(name)s failed", vars(self))
622
logger.info("Checker for %(name)s failed",
1071
625
self.last_checker_status = -1
1072
self.last_checker_signal = -returncode
1073
626
logger.warning("Checker for %(name)s crashed?",
1077
629
def checked_ok(self):
1078
630
"""Assert that the client has been seen, alive and well."""
1079
631
self.last_checked_ok = datetime.datetime.utcnow()
1080
632
self.last_checker_status = 0
1081
self.last_checker_signal = None
1082
633
self.bump_timeout()
1084
635
def bump_timeout(self, timeout=None):
1085
636
"""Bump up the timeout for this client."""
1086
637
if timeout is None:
1087
638
timeout = self.timeout
1088
639
if self.disable_initiator_tag is not None:
1089
GLib.source_remove(self.disable_initiator_tag)
1090
self.disable_initiator_tag = None
640
gobject.source_remove(self.disable_initiator_tag)
1091
641
if getattr(self, "enabled", False):
1092
self.disable_initiator_tag = GLib.timeout_add(
1093
int(timeout.total_seconds() * 1000), self.disable)
642
self.disable_initiator_tag = (gobject.timeout_add
643
(timedelta_to_milliseconds
644
(timeout), self.disable))
1094
645
self.expires = datetime.datetime.utcnow() + timeout
1096
647
def need_approval(self):
1097
648
self.last_approval_request = datetime.datetime.utcnow()
1099
650
def start_checker(self):
1100
651
"""Start a new checker subprocess if one is not running.
1102
653
If a checker already exists, leave it running and do
1104
655
# The reason for not killing a running checker is that if we
1105
# did that, and if a checker (for some reason) started running
1106
# slowly and taking more than 'interval' time, then the client
1107
# would inevitably timeout, since no checker would get a
1108
# chance to run to completion. If we instead leave running
656
# did that, then if a checker (for some reason) started
657
# running slowly and taking more than 'interval' time, the
658
# client would inevitably timeout, since no checker would get
659
# a chance to run to completion. If we instead leave running
1109
660
# checkers alone, the checker would have to take more time
1110
661
# than 'timeout' for the client to be disabled, which is as it
1113
if self.checker is not None and not self.checker.is_alive():
1114
logger.warning("Checker was not alive; joining")
664
# If a checker exists, make sure it is not a zombie
666
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
667
except (AttributeError, OSError) as error:
668
if (isinstance(error, OSError)
669
and error.errno != errno.ECHILD):
673
logger.warning("Checker was a zombie")
674
gobject.source_remove(self.checker_callback_tag)
675
self.checker_callback(pid, status,
676
self.current_checker_command)
1117
677
# Start a new checker if needed
1118
678
if self.checker is None:
1119
# Escape attributes for the shell
1121
attr: re.escape(str(getattr(self, attr)))
1122
for attr in self.runtime_expansions}
1124
command = self.checker_command % escaped_attrs
1125
except TypeError as error:
1126
logger.error('Could not format string "%s"',
1127
self.checker_command,
1129
return True # Try again later
680
# In case checker_command has exactly one % operator
681
command = self.checker_command % self.host
683
# Escape attributes for the shell
684
escaped_attrs = dict(
686
re.escape(unicode(str(getattr(self, attr, "")),
690
self.runtime_expansions)
693
command = self.checker_command % escaped_attrs
694
except TypeError as error:
695
logger.error('Could not format string "%s":'
696
' %s', self.checker_command, error)
697
return True # Try again later
1130
698
self.current_checker_command = command
1131
logger.info("Starting checker %r for %s", command,
1133
# We don't need to redirect stdout and stderr, since
1134
# in normal mode, that is already done by daemon(),
1135
# and in debug mode we don't want to. (Stdin is
1136
# always replaced by /dev/null.)
1137
# The exception is when not debugging but nevertheless
1138
# running in the foreground; use the previously
1140
popen_args = {"close_fds": True,
1143
if (not self.server_settings["debug"]
1144
and self.server_settings["foreground"]):
1145
popen_args.update({"stdout": wnull,
1147
pipe = multiprocessing.Pipe(duplex=False)
1148
self.checker = multiprocessing.Process(
1150
args=(pipe[1], subprocess.call, command),
1152
self.checker.start()
1153
self.checker_callback_tag = GLib.io_add_watch(
1154
GLib.IOChannel.unix_new(pipe[0].fileno()),
1155
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1156
self.checker_callback, pipe[0], command)
1157
# Re-run this periodically if run by GLib.timeout_add
700
logger.info("Starting checker %r for %s",
702
# We don't need to redirect stdout and stderr, since
703
# in normal mode, that is already done by daemon(),
704
# and in debug mode we don't want to. (Stdin is
705
# always replaced by /dev/null.)
706
self.checker = subprocess.Popen(command,
709
self.checker_callback_tag = (gobject.child_watch_add
711
self.checker_callback,
713
# The checker may have completed before the gobject
714
# watch was added. Check for this.
715
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
717
gobject.source_remove(self.checker_callback_tag)
718
self.checker_callback(pid, status, command)
719
except OSError as error:
720
logger.error("Failed to start subprocess: %s",
722
# Re-run this periodically if run by gobject.timeout_add
1160
725
def stop_checker(self):
1161
726
"""Force the checker process, if any, to stop."""
1162
727
if self.checker_callback_tag:
1163
GLib.source_remove(self.checker_callback_tag)
728
gobject.source_remove(self.checker_callback_tag)
1164
729
self.checker_callback_tag = None
1165
730
if getattr(self, "checker", None) is None:
1167
732
logger.debug("Stopping checker for %(name)s", vars(self))
1168
self.checker.terminate()
734
os.kill(self.checker.pid, signal.SIGTERM)
736
#if self.checker.poll() is None:
737
# os.kill(self.checker.pid, signal.SIGKILL)
738
except OSError as error:
739
if error.errno != errno.ESRCH: # No such process
1169
741
self.checker = None
1172
def dbus_service_property(dbus_interface,
744
def dbus_service_property(dbus_interface, signature="v",
745
access="readwrite", byte_arrays=False):
1176
746
"""Decorators for marking methods of a DBusObjectWithProperties to
1177
747
become properties on the D-Bus.
1179
749
The decorated method will be called with no arguments by "Get"
1180
750
and with one argument by "Set".
1182
752
The parameters, where they are supported, are the same as
1183
753
dbus.service.method, except there is only "signature", since the
1184
754
type from Get() and the type sent to Set() is the same.
1267
class DBusObjectWithAnnotations(dbus.service.Object):
1268
"""A D-Bus object with annotations.
1270
Classes inheriting from this can use the dbus_annotations
1271
decorator to add annotations to methods or signals.
1275
def _is_dbus_thing(thing):
1276
"""Returns a function testing if an attribute is a D-Bus thing
1278
If called like _is_dbus_thing("method") it returns a function
1279
suitable for use as predicate to inspect.getmembers().
1281
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1284
def _get_all_dbus_things(self, thing):
1285
"""Returns a generator of (name, attribute) pairs
1287
return ((getattr(athing.__get__(self), "_dbus_name", name),
1288
athing.__get__(self))
1289
for cls in self.__class__.__mro__
1291
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1293
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1295
path_keyword='object_path',
1296
connection_keyword='connection')
1297
def Introspect(self, object_path, connection):
1298
"""Overloading of standard D-Bus method.
1300
Inserts annotation tags on methods and signals.
1302
xmlstring = dbus.service.Object.Introspect(self, object_path,
1305
document = xml.dom.minidom.parseString(xmlstring)
1307
for if_tag in document.getElementsByTagName("interface"):
1308
# Add annotation tags
1309
for typ in ("method", "signal"):
1310
for tag in if_tag.getElementsByTagName(typ):
1312
for name, prop in (self.
1313
_get_all_dbus_things(typ)):
1314
if (name == tag.getAttribute("name")
1315
and prop._dbus_interface
1316
== if_tag.getAttribute("name")):
1317
annots.update(getattr(
1318
prop, "_dbus_annotations", {}))
1319
for name, value in annots.items():
1320
ann_tag = document.createElement(
1322
ann_tag.setAttribute("name", name)
1323
ann_tag.setAttribute("value", value)
1324
tag.appendChild(ann_tag)
1325
# Add interface annotation tags
1326
for annotation, value in dict(
1327
itertools.chain.from_iterable(
1328
annotations().items()
1329
for name, annotations
1330
in self._get_all_dbus_things("interface")
1331
if name == if_tag.getAttribute("name")
1333
ann_tag = document.createElement("annotation")
1334
ann_tag.setAttribute("name", annotation)
1335
ann_tag.setAttribute("value", value)
1336
if_tag.appendChild(ann_tag)
1337
# Fix argument name for the Introspect method itself
1338
if (if_tag.getAttribute("name")
1339
== dbus.INTROSPECTABLE_IFACE):
1340
for cn in if_tag.getElementsByTagName("method"):
1341
if cn.getAttribute("name") == "Introspect":
1342
for arg in cn.getElementsByTagName("arg"):
1343
if (arg.getAttribute("direction")
1345
arg.setAttribute("name",
1347
xmlstring = document.toxml("utf-8")
1349
except (AttributeError, xml.dom.DOMException,
1350
xml.parsers.expat.ExpatError) as error:
1351
logger.error("Failed to override Introspection method",
1356
class DBusObjectWithProperties(DBusObjectWithAnnotations):
793
class DBusObjectWithProperties(dbus.service.Object):
1357
794
"""A D-Bus object with properties.
1359
796
Classes inheriting from this can use the dbus_service_property
1360
797
decorator to expose methods as D-Bus properties. It exposes the
1361
798
standard Get(), Set(), and GetAll() methods on the D-Bus.
802
def _is_dbus_property(obj):
803
return getattr(obj, "_dbus_is_property", False)
805
def _get_all_dbus_properties(self):
806
"""Returns a generator of (name, attribute) pairs
808
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
809
for cls in self.__class__.__mro__
811
inspect.getmembers(cls, self._is_dbus_property))
1364
813
def _get_dbus_property(self, interface_name, property_name):
1365
814
"""Returns a bound method if one exists which is a D-Bus
1366
815
property with the specified name and interface.
1368
for cls in self.__class__.__mro__:
1369
for name, value in inspect.getmembers(
1370
cls, self._is_dbus_thing("property")):
817
for cls in self.__class__.__mro__:
818
for name, value in (inspect.getmembers
819
(cls, self._is_dbus_property)):
1371
820
if (value._dbus_name == property_name
1372
821
and value._dbus_interface == interface_name):
1373
822
return value.__get__(self)
1375
824
# No such property
1376
raise DBusPropertyNotFound("{}:{}.{}".format(
1377
self.dbus_object_path, interface_name, property_name))
1380
def _get_all_interface_names(cls):
1381
"""Get a sequence of all interfaces supported by an object"""
1382
return (name for name in set(getattr(getattr(x, attr),
1383
"_dbus_interface", None)
1384
for x in (inspect.getmro(cls))
1386
if name is not None)
1388
@dbus.service.method(dbus.PROPERTIES_IFACE,
825
raise DBusPropertyNotFound(self.dbus_object_path + ":"
826
+ interface_name + "."
829
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1390
830
out_signature="v")
1391
831
def Get(self, interface_name, property_name):
1392
832
"""Standard D-Bus property Get() method, see D-Bus standard.
1439
876
if not hasattr(value, "variant_level"):
1440
877
properties[name] = value
1442
properties[name] = type(value)(
1443
value, variant_level=value.variant_level + 1)
879
properties[name] = type(value)(value, variant_level=
880
value.variant_level+1)
1444
881
return dbus.Dictionary(properties, signature="sv")
1446
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1447
def PropertiesChanged(self, interface_name, changed_properties,
1448
invalidated_properties):
1449
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1454
883
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1455
884
out_signature="s",
1456
885
path_keyword='object_path',
1457
886
connection_keyword='connection')
1458
887
def Introspect(self, object_path, connection):
1459
"""Overloading of standard D-Bus method.
1461
Inserts property tags and interface annotation tags.
888
"""Standard D-Bus method, overloaded to insert property tags.
1463
xmlstring = DBusObjectWithAnnotations.Introspect(self,
890
xmlstring = dbus.service.Object.Introspect(self, object_path,
1467
893
document = xml.dom.minidom.parseString(xmlstring)
1469
894
def make_tag(document, name, prop):
1470
895
e = document.createElement("property")
1471
896
e.setAttribute("name", name)
1472
897
e.setAttribute("type", prop._dbus_signature)
1473
898
e.setAttribute("access", prop._dbus_access)
1476
900
for if_tag in document.getElementsByTagName("interface"):
1478
901
for tag in (make_tag(document, name, prop)
1480
in self._get_all_dbus_things("property")
903
in self._get_all_dbus_properties()
1481
904
if prop._dbus_interface
1482
905
== if_tag.getAttribute("name")):
1483
906
if_tag.appendChild(tag)
1484
# Add annotation tags for properties
1485
for tag in if_tag.getElementsByTagName("property"):
1487
for name, prop in self._get_all_dbus_things(
1489
if (name == tag.getAttribute("name")
1490
and prop._dbus_interface
1491
== if_tag.getAttribute("name")):
1492
annots.update(getattr(
1493
prop, "_dbus_annotations", {}))
1494
for name, value in annots.items():
1495
ann_tag = document.createElement(
1497
ann_tag.setAttribute("name", name)
1498
ann_tag.setAttribute("value", value)
1499
tag.appendChild(ann_tag)
1500
907
# Add the names to the return values for the
1501
908
# "org.freedesktop.DBus.Properties" methods
1502
909
if (if_tag.getAttribute("name")
1517
924
except (AttributeError, xml.dom.DOMException,
1518
925
xml.parsers.expat.ExpatError) as error:
1519
926
logger.error("Failed to override Introspection method",
1525
dbus.OBJECT_MANAGER_IFACE
1526
except AttributeError:
1527
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1530
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1531
"""A D-Bus object with an ObjectManager.
1533
Classes inheriting from this exposes the standard
1534
GetManagedObjects call and the InterfacesAdded and
1535
InterfacesRemoved signals on the standard
1536
"org.freedesktop.DBus.ObjectManager" interface.
1538
Note: No signals are sent automatically; they must be sent
1541
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1542
out_signature="a{oa{sa{sv}}}")
1543
def GetManagedObjects(self):
1544
"""This function must be overridden"""
1545
raise NotImplementedError()
1547
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1548
signature="oa{sa{sv}}")
1549
def InterfacesAdded(self, object_path, interfaces_and_properties):
1552
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1553
def InterfacesRemoved(self, object_path, interfaces):
1556
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1558
path_keyword='object_path',
1559
connection_keyword='connection')
1560
def Introspect(self, object_path, connection):
1561
"""Overloading of standard D-Bus method.
1563
Override return argument name of GetManagedObjects to be
1564
"objpath_interfaces_and_properties"
1566
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1570
document = xml.dom.minidom.parseString(xmlstring)
1572
for if_tag in document.getElementsByTagName("interface"):
1573
# Fix argument name for the GetManagedObjects method
1574
if (if_tag.getAttribute("name")
1575
== dbus.OBJECT_MANAGER_IFACE):
1576
for cn in if_tag.getElementsByTagName("method"):
1577
if (cn.getAttribute("name")
1578
== "GetManagedObjects"):
1579
for arg in cn.getElementsByTagName("arg"):
1580
if (arg.getAttribute("direction")
1584
"objpath_interfaces"
1586
xmlstring = document.toxml("utf-8")
1588
except (AttributeError, xml.dom.DOMException,
1589
xml.parsers.expat.ExpatError) as error:
1590
logger.error("Failed to override Introspection method",
1595
def datetime_to_dbus(dt, variant_level=0):
931
def datetime_to_dbus (dt, variant_level=0):
1596
932
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1598
return dbus.String("", variant_level=variant_level)
1599
return dbus.String(dt.isoformat(), variant_level=variant_level)
1602
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1603
"""A class decorator; applied to a subclass of
1604
dbus.service.Object, it will add alternate D-Bus attributes with
1605
interface names according to the "alt_interface_names" mapping.
1608
@alternate_dbus_interfaces({"org.example.Interface":
1609
"net.example.AlternateInterface"})
1610
class SampleDBusObject(dbus.service.Object):
1611
@dbus.service.method("org.example.Interface")
1612
def SampleDBusMethod():
1615
The above "SampleDBusMethod" on "SampleDBusObject" will be
1616
reachable via two interfaces: "org.example.Interface" and
1617
"net.example.AlternateInterface", the latter of which will have
1618
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1619
"true", unless "deprecate" is passed with a False value.
1621
This works for methods and signals, and also for D-Bus properties
1622
(from DBusObjectWithProperties) and interfaces (from the
1623
dbus_interface_annotations decorator).
934
return dbus.String("", variant_level = variant_level)
935
return dbus.String(dt.isoformat(),
936
variant_level=variant_level)
939
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
941
"""Applied to an empty subclass of a D-Bus object, this metaclass
942
will add additional D-Bus attributes matching a certain pattern.
1627
for orig_interface_name, alt_interface_name in (
1628
alt_interface_names.items()):
1630
interface_names = set()
1631
# Go though all attributes of the class
1632
for attrname, attribute in inspect.getmembers(cls):
944
def __new__(mcs, name, bases, attr):
945
# Go through all the base classes which could have D-Bus
946
# methods, signals, or properties in them
947
for base in (b for b in bases
948
if issubclass(b, dbus.service.Object)):
949
# Go though all attributes of the base class
950
for attrname, attribute in inspect.getmembers(base):
1633
951
# Ignore non-D-Bus attributes, and D-Bus attributes
1634
952
# with the wrong interface name
1635
953
if (not hasattr(attribute, "_dbus_interface")
1636
or not attribute._dbus_interface.startswith(
1637
orig_interface_name)):
954
or not attribute._dbus_interface
955
.startswith("se.recompile.Mandos")):
1639
957
# Create an alternate D-Bus interface name based on
1640
958
# the current name
1641
alt_interface = attribute._dbus_interface.replace(
1642
orig_interface_name, alt_interface_name)
1643
interface_names.add(alt_interface)
959
alt_interface = (attribute._dbus_interface
960
.replace("se.recompile.Mandos",
961
"se.bsnet.fukt.Mandos"))
1644
962
# Is this a D-Bus signal?
1645
963
if getattr(attribute, "_dbus_is_signal", False):
1646
# Extract the original non-method undecorated
1647
# function by black magic
1648
if sys.version_info.major == 2:
1649
nonmethod_func = (dict(
964
# Extract the original non-method function by
966
nonmethod_func = (dict(
1650
967
zip(attribute.func_code.co_freevars,
1651
attribute.__closure__))
1652
["func"].cell_contents)
1654
nonmethod_func = (dict(
1655
zip(attribute.__code__.co_freevars,
1656
attribute.__closure__))
1657
["func"].cell_contents)
968
attribute.__closure__))["func"]
1658
970
# Create a new, but exactly alike, function
1659
971
# object, and decorate it to be a new D-Bus signal
1660
972
# with the alternate D-Bus interface name
1661
new_function = copy_function(nonmethod_func)
1662
new_function = (dbus.service.signal(
1664
attribute._dbus_signature)(new_function))
1665
# Copy annotations, if any
1667
new_function._dbus_annotations = dict(
1668
attribute._dbus_annotations)
1669
except AttributeError:
973
new_function = (dbus.service.signal
975
attribute._dbus_signature)
977
nonmethod_func.func_code,
978
nonmethod_func.func_globals,
979
nonmethod_func.func_name,
980
nonmethod_func.func_defaults,
981
nonmethod_func.func_closure)))
1672
982
# Define a creator of a function to call both the
1673
# original and alternate functions, so both the
1674
# original and alternate signals gets sent when
1675
# the function is called
983
# old and new functions, so both the old and new
984
# signals gets sent when the function is called
1676
985
def fixscope(func1, func2):
1677
986
"""This function is a scope container to pass
1678
987
func1 and func2 to the "call_both" function
1679
988
outside of its arguments"""
1681
@functools.wraps(func2)
1682
989
def call_both(*args, **kwargs):
1683
990
"""This function will emit two D-Bus
1684
991
signals by calling func1 and func2"""
1685
992
func1(*args, **kwargs)
1686
993
func2(*args, **kwargs)
1687
# Make wrapper function look like a D-Bus
1689
for name, attr in inspect.getmembers(func2):
1690
if name.startswith("_dbus_"):
1691
setattr(call_both, name, attr)
1693
994
return call_both
1694
995
# Create the "call_both" function and add it to
1696
attr[attrname] = fixscope(attribute, new_function)
997
attr[attrname] = fixscope(attribute,
1697
999
# Is this a D-Bus method?
1698
1000
elif getattr(attribute, "_dbus_is_method", False):
1699
1001
# Create a new, but exactly alike, function
1700
1002
# object. Decorate it to be a new D-Bus method
1701
1003
# with the alternate D-Bus interface name. Add it
1702
1004
# to the class.
1704
dbus.service.method(
1706
attribute._dbus_in_signature,
1707
attribute._dbus_out_signature)
1708
(copy_function(attribute)))
1709
# Copy annotations, if any
1711
attr[attrname]._dbus_annotations = dict(
1712
attribute._dbus_annotations)
1713
except AttributeError:
1005
attr[attrname] = (dbus.service.method
1007
attribute._dbus_in_signature,
1008
attribute._dbus_out_signature)
1010
(attribute.func_code,
1011
attribute.func_globals,
1012
attribute.func_name,
1013
attribute.func_defaults,
1014
attribute.func_closure)))
1715
1015
# Is this a D-Bus property?
1716
1016
elif getattr(attribute, "_dbus_is_property", False):
1717
1017
# Create a new, but exactly alike, function
1718
1018
# object, and decorate it to be a new D-Bus
1719
1019
# property with the alternate D-Bus interface
1720
1020
# name. Add it to the class.
1721
attr[attrname] = (dbus_service_property(
1722
alt_interface, attribute._dbus_signature,
1723
attribute._dbus_access,
1724
attribute._dbus_get_args_options
1726
(copy_function(attribute)))
1727
# Copy annotations, if any
1729
attr[attrname]._dbus_annotations = dict(
1730
attribute._dbus_annotations)
1731
except AttributeError:
1733
# Is this a D-Bus interface?
1734
elif getattr(attribute, "_dbus_is_interface", False):
1735
# Create a new, but exactly alike, function
1736
# object. Decorate it to be a new D-Bus interface
1737
# with the alternate D-Bus interface name. Add it
1740
dbus_interface_annotations(alt_interface)
1741
(copy_function(attribute)))
1743
# Deprecate all alternate interfaces
1744
iname = "_AlternateDBusNames_interface_annotation{}"
1745
for interface_name in interface_names:
1747
@dbus_interface_annotations(interface_name)
1749
return {"org.freedesktop.DBus.Deprecated":
1751
# Find an unused name
1752
for aname in (iname.format(i)
1753
for i in itertools.count()):
1754
if aname not in attr:
1758
# Replace the class with a new subclass of it with
1759
# methods, signals, etc. as created above.
1760
if sys.version_info.major == 2:
1761
cls = type(b"{}Alternate".format(cls.__name__),
1764
cls = type("{}Alternate".format(cls.__name__),
1771
@alternate_dbus_interfaces({"se.recompile.Mandos":
1772
"se.bsnet.fukt.Mandos"})
1021
attr[attrname] = (dbus_service_property
1023
attribute._dbus_signature,
1024
attribute._dbus_access,
1026
._dbus_get_args_options
1029
(attribute.func_code,
1030
attribute.func_globals,
1031
attribute.func_name,
1032
attribute.func_defaults,
1033
attribute.func_closure)))
1034
return type.__new__(mcs, name, bases, attr)
1773
1037
class ClientDBus(Client, DBusObjectWithProperties):
1774
1038
"""A Client class using D-Bus
1777
1041
dbus_object_path: dbus.ObjectPath
1778
1042
bus: dbus.SystemBus()
1781
1045
runtime_expansions = (Client.runtime_expansions
1782
+ ("dbus_object_path", ))
1784
_interface = "se.recompile.Mandos.Client"
1046
+ ("dbus_object_path",))
1786
1048
# dbus.service.Object doesn't use super(), so we can't either.
1788
def __init__(self, bus=None, *args, **kwargs):
1050
def __init__(self, bus = None, *args, **kwargs):
1790
1052
Client.__init__(self, *args, **kwargs)
1791
1053
# Only now, when this client is initialized, can it show up on
1793
client_object_name = str(self.name).translate(
1055
client_object_name = unicode(self.name).translate(
1794
1056
{ord("."): ord("_"),
1795
1057
ord("-"): ord("_")})
1796
self.dbus_object_path = dbus.ObjectPath(
1797
"/clients/" + client_object_name)
1058
self.dbus_object_path = (dbus.ObjectPath
1059
("/clients/" + client_object_name))
1798
1060
DBusObjectWithProperties.__init__(self, self.bus,
1799
1061
self.dbus_object_path)
1801
def notifychangeproperty(transform_func, dbus_name,
1802
type_func=lambda x: x,
1804
invalidate_only=False,
1805
_interface=_interface):
1063
def notifychangeproperty(transform_func,
1064
dbus_name, type_func=lambda x: x,
1806
1066
""" Modify a variable so that it's a property which announces
1807
1067
its changes to DBus.
1809
1069
transform_fun: Function that takes a value and a variant_level
1810
1070
and transforms it to a D-Bus type.
1811
1071
dbus_name: D-Bus name of the variable
1963
1214
server to mandos-client
1967
1218
# Rejected - signal
1968
1219
@dbus.service.signal(_interface, signature="s")
1969
1220
def Rejected(self, reason):
1973
1224
# NeedApproval - signal
1974
1225
@dbus.service.signal(_interface, signature="tb")
1975
1226
def NeedApproval(self, timeout, default):
1977
1228
return self.need_approval()
1981
1232
# Approve - method
1982
1233
@dbus.service.method(_interface, in_signature="b")
1983
1234
def Approve(self, value):
1984
1235
self.approve(value)
1986
1237
# CheckedOK - method
1987
1238
@dbus.service.method(_interface)
1988
1239
def CheckedOK(self):
1989
1240
self.checked_ok()
1991
1242
# Enable - method
1992
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1993
1243
@dbus.service.method(_interface)
1994
1244
def Enable(self):
1998
1248
# StartChecker - method
1999
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2000
1249
@dbus.service.method(_interface)
2001
1250
def StartChecker(self):
2003
1252
self.start_checker()
2005
1254
# Disable - method
2006
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2007
1255
@dbus.service.method(_interface)
2008
1256
def Disable(self):
2012
1260
# StopChecker - method
2013
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2014
1261
@dbus.service.method(_interface)
2015
1262
def StopChecker(self):
2016
1263
self.stop_checker()
2020
1267
# ApprovalPending - property
2021
1268
@dbus_service_property(_interface, signature="b", access="read")
2022
1269
def ApprovalPending_dbus_property(self):
2023
1270
return dbus.Boolean(bool(self.approvals_pending))
2025
1272
# ApprovedByDefault - property
2026
@dbus_service_property(_interface,
1273
@dbus_service_property(_interface, signature="b",
2028
1274
access="readwrite")
2029
1275
def ApprovedByDefault_dbus_property(self, value=None):
2030
1276
if value is None: # get
2031
1277
return dbus.Boolean(self.approved_by_default)
2032
1278
self.approved_by_default = bool(value)
2034
1280
# ApprovalDelay - property
2035
@dbus_service_property(_interface,
1281
@dbus_service_property(_interface, signature="t",
2037
1282
access="readwrite")
2038
1283
def ApprovalDelay_dbus_property(self, value=None):
2039
1284
if value is None: # get
2040
return dbus.UInt64(self.approval_delay.total_seconds()
1285
return dbus.UInt64(self.approval_delay_milliseconds())
2042
1286
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2044
1288
# ApprovalDuration - property
2045
@dbus_service_property(_interface,
1289
@dbus_service_property(_interface, signature="t",
2047
1290
access="readwrite")
2048
1291
def ApprovalDuration_dbus_property(self, value=None):
2049
1292
if value is None: # get
2050
return dbus.UInt64(self.approval_duration.total_seconds()
1293
return dbus.UInt64(timedelta_to_milliseconds(
1294
self.approval_duration))
2052
1295
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2054
1297
# Name - property
2056
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2057
1298
@dbus_service_property(_interface, signature="s", access="read")
2058
1299
def Name_dbus_property(self):
2059
1300
return dbus.String(self.name)
2063
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2064
@dbus_service_property(_interface, signature="s", access="read")
2065
def KeyID_dbus_property(self):
2066
return dbus.String(self.key_id)
2068
1302
# Fingerprint - property
2070
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2071
1303
@dbus_service_property(_interface, signature="s", access="read")
2072
1304
def Fingerprint_dbus_property(self):
2073
1305
return dbus.String(self.fingerprint)
2075
1307
# Host - property
2076
@dbus_service_property(_interface,
1308
@dbus_service_property(_interface, signature="s",
2078
1309
access="readwrite")
2079
1310
def Host_dbus_property(self, value=None):
2080
1311
if value is None: # get
2081
1312
return dbus.String(self.host)
2082
self.host = str(value)
1313
self.host = unicode(value)
2084
1315
# Created - property
2086
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2087
1316
@dbus_service_property(_interface, signature="s", access="read")
2088
1317
def Created_dbus_property(self):
2089
1318
return datetime_to_dbus(self.created)
2091
1320
# LastEnabled - property
2092
1321
@dbus_service_property(_interface, signature="s", access="read")
2093
1322
def LastEnabled_dbus_property(self):
2094
1323
return datetime_to_dbus(self.last_enabled)
2096
1325
# Enabled - property
2097
@dbus_service_property(_interface,
1326
@dbus_service_property(_interface, signature="b",
2099
1327
access="readwrite")
2100
1328
def Enabled_dbus_property(self, value=None):
2101
1329
if value is None: # get
2108
1336
# LastCheckedOK - property
2109
@dbus_service_property(_interface,
1337
@dbus_service_property(_interface, signature="s",
2111
1338
access="readwrite")
2112
1339
def LastCheckedOK_dbus_property(self, value=None):
2113
1340
if value is not None:
2114
1341
self.checked_ok()
2116
1343
return datetime_to_dbus(self.last_checked_ok)
2118
1345
# LastCheckerStatus - property
2119
@dbus_service_property(_interface, signature="n", access="read")
1346
@dbus_service_property(_interface, signature="n",
2120
1348
def LastCheckerStatus_dbus_property(self):
2121
1349
return dbus.Int16(self.last_checker_status)
2123
1351
# Expires - property
2124
1352
@dbus_service_property(_interface, signature="s", access="read")
2125
1353
def Expires_dbus_property(self):
2126
1354
return datetime_to_dbus(self.expires)
2128
1356
# LastApprovalRequest - property
2129
1357
@dbus_service_property(_interface, signature="s", access="read")
2130
1358
def LastApprovalRequest_dbus_property(self):
2131
1359
return datetime_to_dbus(self.last_approval_request)
2133
1361
# Timeout - property
2134
@dbus_service_property(_interface,
1362
@dbus_service_property(_interface, signature="t",
2136
1363
access="readwrite")
2137
1364
def Timeout_dbus_property(self, value=None):
2138
1365
if value is None: # get
2139
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2140
old_timeout = self.timeout
1366
return dbus.UInt64(self.timeout_milliseconds())
2141
1367
self.timeout = datetime.timedelta(0, 0, 0, value)
2142
# Reschedule disabling
1368
# Reschedule timeout
2143
1369
if self.enabled:
2144
1370
now = datetime.datetime.utcnow()
2145
self.expires += self.timeout - old_timeout
2146
if self.expires <= now:
1371
time_to_die = timedelta_to_milliseconds(
1372
(self.last_checked_ok + self.timeout) - now)
1373
if time_to_die <= 0:
2147
1374
# The timeout has passed
1377
self.expires = (now +
1378
datetime.timedelta(milliseconds =
2150
1380
if (getattr(self, "disable_initiator_tag", None)
2153
GLib.source_remove(self.disable_initiator_tag)
2154
self.disable_initiator_tag = GLib.timeout_add(
2155
int((self.expires - now).total_seconds() * 1000),
1383
gobject.source_remove(self.disable_initiator_tag)
1384
self.disable_initiator_tag = (gobject.timeout_add
2158
1388
# ExtendedTimeout - property
2159
@dbus_service_property(_interface,
1389
@dbus_service_property(_interface, signature="t",
2161
1390
access="readwrite")
2162
1391
def ExtendedTimeout_dbus_property(self, value=None):
2163
1392
if value is None: # get
2164
return dbus.UInt64(self.extended_timeout.total_seconds()
1393
return dbus.UInt64(self.extended_timeout_milliseconds())
2166
1394
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2168
1396
# Interval - property
2169
@dbus_service_property(_interface,
1397
@dbus_service_property(_interface, signature="t",
2171
1398
access="readwrite")
2172
1399
def Interval_dbus_property(self, value=None):
2173
1400
if value is None: # get
2174
return dbus.UInt64(self.interval.total_seconds() * 1000)
1401
return dbus.UInt64(self.interval_milliseconds())
2175
1402
self.interval = datetime.timedelta(0, 0, 0, value)
2176
1403
if getattr(self, "checker_initiator_tag", None) is None:
2178
1405
if self.enabled:
2179
1406
# Reschedule checker run
2180
GLib.source_remove(self.checker_initiator_tag)
2181
self.checker_initiator_tag = GLib.timeout_add(
2182
value, self.start_checker)
2183
self.start_checker() # Start one now, too
1407
gobject.source_remove(self.checker_initiator_tag)
1408
self.checker_initiator_tag = (gobject.timeout_add
1409
(value, self.start_checker))
1410
self.start_checker() # Start one now, too
2185
1412
# Checker - property
2186
@dbus_service_property(_interface,
1413
@dbus_service_property(_interface, signature="s",
2188
1414
access="readwrite")
2189
1415
def Checker_dbus_property(self, value=None):
2190
1416
if value is None: # get
2191
1417
return dbus.String(self.checker_command)
2192
self.checker_command = str(value)
1418
self.checker_command = unicode(value)
2194
1420
# CheckerRunning - property
2195
@dbus_service_property(_interface,
1421
@dbus_service_property(_interface, signature="b",
2197
1422
access="readwrite")
2198
1423
def CheckerRunning_dbus_property(self, value=None):
2199
1424
if value is None: # get
2240
1457
if data[0] == 'data':
2242
1459
if data[0] == 'function':
2244
1460
def func(*args, **kwargs):
2245
1461
self._pipe.send(('funcall', name, args, kwargs))
2246
1462
return self._pipe.recv()[1]
2250
1465
def __setattr__(self, name, value):
2251
1466
if name == '_pipe':
2252
1467
return super(ProxyClient, self).__setattr__(name, value)
2253
1468
self._pipe.send(('setattr', name, value))
1471
class ClientDBusTransitional(ClientDBus):
1472
__metaclass__ = AlternateDBusNamesMetaclass
2256
1475
class ClientHandler(socketserver.BaseRequestHandler, object):
2257
1476
"""A class to handle client connections.
2259
1478
Instantiated once for each connection to handle it.
2260
1479
Note: This will run in its own forked process."""
2262
1481
def handle(self):
2263
1482
with contextlib.closing(self.server.child_pipe) as child_pipe:
2264
1483
logger.info("TCP connection from: %s",
2265
str(self.client_address))
1484
unicode(self.client_address))
2266
1485
logger.debug("Pipe FD: %d",
2267
1486
self.server.child_pipe.fileno())
2269
session = gnutls.ClientSession(self.request)
2271
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2272
# "+AES-256-CBC", "+SHA1",
2273
# "+COMP-NULL", "+CTYPE-OPENPGP",
1488
session = (gnutls.connection
1489
.ClientSession(self.request,
1491
.X509Credentials()))
1493
# Note: gnutls.connection.X509Credentials is really a
1494
# generic GnuTLS certificate credentials object so long as
1495
# no X.509 keys are added to it. Therefore, we can use it
1496
# here despite using OpenPGP certificates.
1498
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1499
# "+AES-256-CBC", "+SHA1",
1500
# "+COMP-NULL", "+CTYPE-OPENPGP",
2275
1502
# Use a fallback default, since this MUST be set.
2276
1503
priority = self.server.gnutls_priority
2277
1504
if priority is None:
2278
1505
priority = "NORMAL"
2279
gnutls.priority_set_direct(session._c_object,
2280
priority.encode("utf-8"),
1506
(gnutls.library.functions
1507
.gnutls_priority_set_direct(session._c_object,
2283
1510
# Start communication using the Mandos protocol
2284
1511
# Get protocol number
2285
1512
line = self.request.makefile().readline()
2286
1513
logger.debug("Protocol version: %r", line)
2288
1515
if int(line.strip().split()[0]) > 1:
2289
raise RuntimeError(line)
2290
1517
except (ValueError, IndexError, RuntimeError) as error:
2291
1518
logger.error("Unknown protocol version: %s", error)
2294
1521
# Start GnuTLS connection
2296
1523
session.handshake()
2297
except gnutls.Error as error:
1524
except gnutls.errors.GNUTLSError as error:
2298
1525
logger.warning("Handshake failed: %s", error)
2299
1526
# Do not run session.bye() here: the session is not
2300
1527
# established. Just abandon the request.
2302
1529
logger.debug("Handshake succeeded")
2304
1531
approval_required = False
2306
if gnutls.has_rawpk:
2309
key_id = self.key_id(
2310
self.peer_certificate(session))
2311
except (TypeError, gnutls.Error) as error:
2312
logger.warning("Bad certificate: %s", error)
2314
logger.debug("Key ID: %s", key_id)
2319
fpr = self.fingerprint(
2320
self.peer_certificate(session))
2321
except (TypeError, gnutls.Error) as error:
2322
logger.warning("Bad certificate: %s", error)
2324
logger.debug("Fingerprint: %s", fpr)
2327
client = ProxyClient(child_pipe, key_id, fpr,
1534
fpr = self.fingerprint(self.peer_certificate
1537
gnutls.errors.GNUTLSError) as error:
1538
logger.warning("Bad certificate: %s", error)
1540
logger.debug("Fingerprint: %s", fpr)
1543
client = ProxyClient(child_pipe, fpr,
2328
1544
self.client_address)
2329
1545
except KeyError:
2332
1548
if client.approval_delay:
2333
1549
delay = client.approval_delay
2334
1550
client.approvals_pending += 1
2335
1551
approval_required = True
2338
1554
if not client.enabled:
2339
1555
logger.info("Client %s is disabled",
2341
1557
if self.server.use_dbus:
2342
1558
# Emit D-Bus signal
2343
1559
client.Rejected("Disabled")
2346
1562
if client.approved or not client.approval_delay:
2347
# We are approved or approval is disabled
1563
#We are approved or approval is disabled
2349
1565
elif client.approved is None:
2350
1566
logger.info("Client %s needs approval",
2383
1601
delay -= time2 - time
2386
session.send(client.secret)
2387
except gnutls.Error as error:
2388
logger.warning("gnutls send failed",
1604
while sent_size < len(client.secret):
1606
sent = session.send(client.secret[sent_size:])
1607
except gnutls.errors.GNUTLSError as error:
1608
logger.warning("gnutls send failed")
1610
logger.debug("Sent: %d, remaining: %d",
1611
sent, len(client.secret)
1612
- (sent_size + sent))
2392
1615
logger.info("Sending secret to %s", client.name)
2393
1616
# bump the timeout using extended_timeout
2394
1617
client.bump_timeout(client.extended_timeout)
2395
1618
if self.server.use_dbus:
2396
1619
# Emit D-Bus signal
2397
1620
client.GotSecret()
2400
1623
if approval_required:
2401
1624
client.approvals_pending -= 1
2404
except gnutls.Error as error:
2405
logger.warning("GnuTLS bye failed",
1627
except gnutls.errors.GNUTLSError as error:
1628
logger.warning("GnuTLS bye failed")
2409
1631
def peer_certificate(session):
2410
"Return the peer's certificate as a bytestring"
2412
cert_type = gnutls.certificate_type_get2(session._c_object,
2414
except AttributeError:
2415
cert_type = gnutls.certificate_type_get(session._c_object)
2416
if gnutls.has_rawpk:
2417
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2419
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2420
# If not a valid certificate type...
2421
if cert_type not in valid_cert_types:
2422
logger.info("Cert type %r not in %r", cert_type,
2424
# ...return invalid data
1632
"Return the peer's OpenPGP certificate as a bytestring"
1633
# If not an OpenPGP certificate...
1634
if (gnutls.library.functions
1635
.gnutls_certificate_type_get(session._c_object)
1636
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1637
# ...do the normal thing
1638
return session.peer_certificate
2426
1639
list_size = ctypes.c_uint(1)
2427
cert_list = (gnutls.certificate_get_peers
1640
cert_list = (gnutls.library.functions
1641
.gnutls_certificate_get_peers
2428
1642
(session._c_object, ctypes.byref(list_size)))
2429
1643
if not bool(cert_list) and list_size.value != 0:
2430
raise gnutls.Error("error getting peer certificate")
1644
raise gnutls.errors.GNUTLSError("error getting peer"
2431
1646
if list_size.value == 0:
2433
1648
cert = cert_list[0]
2434
1649
return ctypes.string_at(cert.data, cert.size)
2437
def key_id(certificate):
2438
"Convert a certificate bytestring to a hexdigit key ID"
2439
# New GnuTLS "datum" with the public key
2440
datum = gnutls.datum_t(
2441
ctypes.cast(ctypes.c_char_p(certificate),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.c_uint(len(certificate)))
2444
# XXX all these need to be created in the gnutls "module"
2445
# New empty GnuTLS certificate
2446
pubkey = gnutls.pubkey_t()
2447
gnutls.pubkey_init(ctypes.byref(pubkey))
2448
# Import the raw public key into the certificate
2449
gnutls.pubkey_import(pubkey,
2450
ctypes.byref(datum),
2451
gnutls.X509_FMT_DER)
2452
# New buffer for the key ID
2453
buf = ctypes.create_string_buffer(32)
2454
buf_len = ctypes.c_size_t(len(buf))
2455
# Get the key ID from the raw public key into the buffer
2456
gnutls.pubkey_get_key_id(pubkey,
2457
gnutls.KEYID_USE_SHA256,
2458
ctypes.cast(ctypes.byref(buf),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.byref(buf_len))
2461
# Deinit the certificate
2462
gnutls.pubkey_deinit(pubkey)
2464
# Convert the buffer to a Python bytestring
2465
key_id = ctypes.string_at(buf, buf_len.value)
2466
# Convert the bytestring to hexadecimal notation
2467
hex_key_id = binascii.hexlify(key_id).upper()
2471
1652
def fingerprint(openpgp):
2472
1653
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2473
1654
# New GnuTLS "datum" with the OpenPGP public key
2474
datum = gnutls.datum_t(
2475
ctypes.cast(ctypes.c_char_p(openpgp),
2476
ctypes.POINTER(ctypes.c_ubyte)),
2477
ctypes.c_uint(len(openpgp)))
1655
datum = (gnutls.library.types
1656
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1659
ctypes.c_uint(len(openpgp))))
2478
1660
# New empty GnuTLS certificate
2479
crt = gnutls.openpgp_crt_t()
2480
gnutls.openpgp_crt_init(ctypes.byref(crt))
1661
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1662
(gnutls.library.functions
1663
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2481
1664
# Import the OpenPGP public key into the certificate
2482
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2483
gnutls.OPENPGP_FMT_RAW)
1665
(gnutls.library.functions
1666
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1667
gnutls.library.constants
1668
.GNUTLS_OPENPGP_FMT_RAW))
2484
1669
# Verify the self signature in the key
2485
1670
crtverify = ctypes.c_uint()
2486
gnutls.openpgp_crt_verify_self(crt, 0,
2487
ctypes.byref(crtverify))
1671
(gnutls.library.functions
1672
.gnutls_openpgp_crt_verify_self(crt, 0,
1673
ctypes.byref(crtverify)))
2488
1674
if crtverify.value != 0:
2489
gnutls.openpgp_crt_deinit(crt)
2490
raise gnutls.CertificateSecurityError(code
1675
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1676
raise (gnutls.errors.CertificateSecurityError
2492
1678
# New buffer for the fingerprint
2493
1679
buf = ctypes.create_string_buffer(20)
2494
1680
buf_len = ctypes.c_size_t()
2495
1681
# Get the fingerprint from the certificate into the buffer
2496
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2497
ctypes.byref(buf_len))
1682
(gnutls.library.functions
1683
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1684
ctypes.byref(buf_len)))
2498
1685
# Deinit the certificate
2499
gnutls.openpgp_crt_deinit(crt)
1686
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2500
1687
# Convert the buffer to a Python bytestring
2501
1688
fpr = ctypes.string_at(buf, buf_len.value)
2502
1689
# Convert the bytestring to hexadecimal notation
2507
class MultiprocessingMixIn:
1694
class MultiprocessingMixIn(object):
2508
1695
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2510
1696
def sub_process_main(self, request, address):
2512
1698
self.finish_request(request, address)
2513
1699
except Exception:
2514
1700
self.handle_error(request, address)
2515
1701
self.close_request(request)
2517
1703
def process_request(self, request, address):
2518
1704
"""Start a new process to process the request."""
2519
proc = multiprocessing.Process(target=self.sub_process_main,
2520
args=(request, address))
1705
proc = multiprocessing.Process(target = self.sub_process_main,
2525
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1712
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2526
1713
""" adds a pipe to the MixIn """
2528
1714
def process_request(self, request, client_address):
2529
1715
"""Overrides and wraps the original process_request().
2531
1717
This function creates a new pipe in self.pipe
2533
1719
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2535
1721
proc = MultiprocessingMixIn.process_request(self, request,
2536
1722
client_address)
2537
1723
self.child_pipe.close()
2538
1724
self.add_pipe(parent_pipe, proc)
2540
1726
def add_pipe(self, parent_pipe, proc):
2541
1727
"""Dummy function; override as necessary"""
2542
raise NotImplementedError()
1728
raise NotImplementedError
2545
1731
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2546
socketserver.TCPServer):
1732
socketserver.TCPServer, object):
2547
1733
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2550
1736
enabled: Boolean; whether this server is activated yet
2551
1737
interface: None or a network interface name (string)
2552
1738
use_ipv6: Boolean; to use IPv6 or not
2555
1740
def __init__(self, server_address, RequestHandlerClass,
2559
"""If socketfd is set, use that file descriptor instead of
2560
creating a new one with socket.socket().
1741
interface=None, use_ipv6=True):
2562
1742
self.interface = interface
2564
1744
self.address_family = socket.AF_INET6
2565
if socketfd is not None:
2566
# Save the file descriptor
2567
self.socketfd = socketfd
2568
# Save the original socket.socket() function
2569
self.socket_socket = socket.socket
2571
# To implement --socket, we monkey patch socket.socket.
2573
# (When socketserver.TCPServer is a new-style class, we
2574
# could make self.socket into a property instead of monkey
2575
# patching socket.socket.)
2577
# Create a one-time-only replacement for socket.socket()
2578
@functools.wraps(socket.socket)
2579
def socket_wrapper(*args, **kwargs):
2580
# Restore original function so subsequent calls are
2582
socket.socket = self.socket_socket
2583
del self.socket_socket
2584
# This time only, return a new socket object from the
2585
# saved file descriptor.
2586
return socket.fromfd(self.socketfd, *args, **kwargs)
2587
# Replace socket.socket() function with wrapper
2588
socket.socket = socket_wrapper
2589
# The socketserver.TCPServer.__init__ will call
2590
# socket.socket(), which might be our replacement,
2591
# socket_wrapper(), if socketfd was set.
2592
1745
socketserver.TCPServer.__init__(self, server_address,
2593
1746
RequestHandlerClass)
2595
1747
def server_bind(self):
2596
1748
"""This overrides the normal server_bind() function
2597
1749
to bind to an interface if one was specified, and also NOT to
2598
1750
bind to an address or port if they were not specified."""
2599
global SO_BINDTODEVICE
2600
1751
if self.interface is not None:
2601
1752
if SO_BINDTODEVICE is None:
2602
# Fall back to a hard-coded value which seems to be
2604
logger.warning("SO_BINDTODEVICE not found, trying 25")
2605
SO_BINDTODEVICE = 25
2607
self.socket.setsockopt(
2608
socket.SOL_SOCKET, SO_BINDTODEVICE,
2609
(self.interface + "\0").encode("utf-8"))
2610
except socket.error as error:
2611
if error.errno == errno.EPERM:
2612
logger.error("No permission to bind to"
2613
" interface %s", self.interface)
2614
elif error.errno == errno.ENOPROTOOPT:
2615
logger.error("SO_BINDTODEVICE not available;"
2616
" cannot bind to interface %s",
2618
elif error.errno == errno.ENODEV:
2619
logger.error("Interface %s does not exist,"
2620
" cannot bind", self.interface)
1753
logger.error("SO_BINDTODEVICE does not exist;"
1754
" cannot bind to interface %s",
1758
self.socket.setsockopt(socket.SOL_SOCKET,
1762
except socket.error as error:
1763
if error[0] == errno.EPERM:
1764
logger.error("No permission to"
1765
" bind to interface %s",
1767
elif error[0] == errno.ENOPROTOOPT:
1768
logger.error("SO_BINDTODEVICE not available;"
1769
" cannot bind to interface %s",
2623
1773
# Only bind(2) the socket if we really need to.
2624
1774
if self.server_address[0] or self.server_address[1]:
2625
if self.server_address[1]:
2626
self.allow_reuse_address = True
2627
1775
if not self.server_address[0]:
2628
1776
if self.address_family == socket.AF_INET6:
2629
any_address = "::" # in6addr_any
1777
any_address = "::" # in6addr_any
2631
any_address = "0.0.0.0" # INADDR_ANY
1779
any_address = socket.INADDR_ANY
2632
1780
self.server_address = (any_address,
2633
1781
self.server_address[1])
2634
1782
elif not self.server_address[1]:
2635
self.server_address = (self.server_address[0], 0)
1783
self.server_address = (self.server_address[0],
2636
1785
# if self.interface:
2637
1786
# self.server_address = (self.server_address[0],
2668
1812
self.gnutls_priority = gnutls_priority
2669
1813
IPv6_TCPServer.__init__(self, server_address,
2670
1814
RequestHandlerClass,
2671
interface=interface,
1815
interface = interface,
1816
use_ipv6 = use_ipv6)
2675
1817
def server_activate(self):
2676
1818
if self.enabled:
2677
1819
return socketserver.TCPServer.server_activate(self)
2679
1821
def enable(self):
2680
1822
self.enabled = True
2682
1824
def add_pipe(self, parent_pipe, proc):
2683
1825
# Call "handle_ipc" for both data and EOF events
2685
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2686
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2687
functools.partial(self.handle_ipc,
2688
parent_pipe=parent_pipe,
2691
def handle_ipc(self, source, condition,
2694
client_object=None):
1826
gobject.io_add_watch(parent_pipe.fileno(),
1827
gobject.IO_IN | gobject.IO_HUP,
1828
functools.partial(self.handle_ipc,
1833
def handle_ipc(self, source, condition, parent_pipe=None,
1834
proc = None, client_object=None):
1836
gobject.IO_IN: "IN", # There is data to read.
1837
gobject.IO_OUT: "OUT", # Data can be written (without
1839
gobject.IO_PRI: "PRI", # There is urgent data to read.
1840
gobject.IO_ERR: "ERR", # Error condition.
1841
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1842
# broken, usually for pipes and
1845
conditions_string = ' | '.join(name
1847
condition_names.iteritems()
1848
if cond & condition)
2695
1849
# error, or the other end of multiprocessing.Pipe has closed
2696
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1850
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2697
1851
# Wait for other process to exit
2701
1855
# Read a request from the child
2702
1856
request = parent_pipe.recv()
2703
1857
command = request[0]
2705
1859
if command == 'init':
2706
key_id = request[1].decode("ascii")
2707
fpr = request[2].decode("ascii")
2708
address = request[3]
2710
for c in self.clients.values():
2711
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2713
if key_id and c.key_id == key_id:
2716
if fpr and c.fingerprint == fpr:
1861
address = request[2]
1863
for c in self.clients.itervalues():
1864
if c.fingerprint == fpr:
2720
logger.info("Client not found for key ID: %s, address"
2721
": %s", key_id or fpr, address)
1868
logger.info("Client not found for fingerprint: %s, ad"
1869
"dress: %s", fpr, address)
2722
1870
if self.use_dbus:
2723
1871
# Emit D-Bus signal
2724
mandos_dbus_service.ClientNotFound(key_id or fpr,
1872
mandos_dbus_service.ClientNotFound(fpr,
2726
1874
parent_pipe.send(False)
2730
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2731
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2732
functools.partial(self.handle_ipc,
2733
parent_pipe=parent_pipe,
2735
client_object=client))
1877
gobject.io_add_watch(parent_pipe.fileno(),
1878
gobject.IO_IN | gobject.IO_HUP,
1879
functools.partial(self.handle_ipc,
2736
1885
parent_pipe.send(True)
2737
1886
# remove the old hook in favor of the new above hook on
2741
1890
funcname = request[1]
2742
1891
args = request[2]
2743
1892
kwargs = request[3]
2745
1894
parent_pipe.send(('data', getattr(client_object,
2746
1895
funcname)(*args,
2749
1898
if command == 'getattr':
2750
1899
attrname = request[1]
2751
if isinstance(client_object.__getattribute__(attrname),
2752
collections.Callable):
2753
parent_pipe.send(('function', ))
1900
if callable(client_object.__getattribute__(attrname)):
1901
parent_pipe.send(('function',))
2756
'data', client_object.__getattribute__(attrname)))
1903
parent_pipe.send(('data', client_object
1904
.__getattribute__(attrname)))
2758
1906
if command == 'setattr':
2759
1907
attrname = request[1]
2760
1908
value = request[2]
2761
1909
setattr(client_object, attrname, value)
2766
def rfc3339_duration_to_delta(duration):
2767
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2769
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2771
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2773
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2775
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2777
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2779
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2781
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2785
# Parsing an RFC 3339 duration with regular expressions is not
2786
# possible - there would have to be multiple places for the same
2787
# values, like seconds. The current code, while more esoteric, is
2788
# cleaner without depending on a parsing library. If Python had a
2789
# built-in library for parsing we would use it, but we'd like to
2790
# avoid excessive use of external libraries.
2792
# New type for defining tokens, syntax, and semantics all-in-one
2793
Token = collections.namedtuple("Token", (
2794
"regexp", # To match token; if "value" is not None, must have
2795
# a "group" containing digits
2796
"value", # datetime.timedelta or None
2797
"followers")) # Tokens valid after this token
2798
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2799
# the "duration" ABNF definition in RFC 3339, Appendix A.
2800
token_end = Token(re.compile(r"$"), None, frozenset())
2801
token_second = Token(re.compile(r"(\d+)S"),
2802
datetime.timedelta(seconds=1),
2803
frozenset((token_end, )))
2804
token_minute = Token(re.compile(r"(\d+)M"),
2805
datetime.timedelta(minutes=1),
2806
frozenset((token_second, token_end)))
2807
token_hour = Token(re.compile(r"(\d+)H"),
2808
datetime.timedelta(hours=1),
2809
frozenset((token_minute, token_end)))
2810
token_time = Token(re.compile(r"T"),
2812
frozenset((token_hour, token_minute,
2814
token_day = Token(re.compile(r"(\d+)D"),
2815
datetime.timedelta(days=1),
2816
frozenset((token_time, token_end)))
2817
token_month = Token(re.compile(r"(\d+)M"),
2818
datetime.timedelta(weeks=4),
2819
frozenset((token_day, token_end)))
2820
token_year = Token(re.compile(r"(\d+)Y"),
2821
datetime.timedelta(weeks=52),
2822
frozenset((token_month, token_end)))
2823
token_week = Token(re.compile(r"(\d+)W"),
2824
datetime.timedelta(weeks=1),
2825
frozenset((token_end, )))
2826
token_duration = Token(re.compile(r"P"), None,
2827
frozenset((token_year, token_month,
2828
token_day, token_time,
2830
# Define starting values:
2832
value = datetime.timedelta()
2834
# Following valid tokens
2835
followers = frozenset((token_duration, ))
2836
# String left to parse
2838
# Loop until end token is found
2839
while found_token is not token_end:
2840
# Search for any currently valid tokens
2841
for token in followers:
2842
match = token.regexp.match(s)
2843
if match is not None:
2845
if token.value is not None:
2846
# Value found, parse digits
2847
factor = int(match.group(1), 10)
2848
# Add to value so far
2849
value += factor * token.value
2850
# Strip token from string
2851
s = token.regexp.sub("", s, 1)
2854
# Set valid next tokens
2855
followers = found_token.followers
2858
# No currently valid tokens were found
2859
raise ValueError("Invalid RFC 3339 duration: {!r}"
2865
1914
def string_to_delta(interval):
2866
1915
"""Parse a string and return a datetime.timedelta
2868
>>> string_to_delta('7d') == datetime.timedelta(7)
2870
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2872
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2874
>>> string_to_delta('24h') == datetime.timedelta(1)
2876
>>> string_to_delta('1w') == datetime.timedelta(7)
2878
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
1917
>>> string_to_delta('7d')
1918
datetime.timedelta(7)
1919
>>> string_to_delta('60s')
1920
datetime.timedelta(0, 60)
1921
>>> string_to_delta('60m')
1922
datetime.timedelta(0, 3600)
1923
>>> string_to_delta('24h')
1924
datetime.timedelta(1)
1925
>>> string_to_delta('1w')
1926
datetime.timedelta(7)
1927
>>> string_to_delta('5m 30s')
1928
datetime.timedelta(0, 330)
2883
return rfc3339_duration_to_delta(interval)
2887
1930
timevalue = datetime.timedelta(0)
2888
1931
for s in interval.split():
1933
suffix = unicode(s[-1])
2891
1934
value = int(s[:-1])
2892
1935
if suffix == "d":
2893
1936
delta = datetime.timedelta(value)
2965
2008
parser.add_argument("--no-dbus", action="store_false",
2966
2009
dest="use_dbus", help="Do not provide D-Bus"
2967
" system bus interface", default=None)
2010
" system bus interface")
2968
2011
parser.add_argument("--no-ipv6", action="store_false",
2969
dest="use_ipv6", help="Do not use IPv6",
2012
dest="use_ipv6", help="Do not use IPv6")
2971
2013
parser.add_argument("--no-restore", action="store_false",
2972
2014
dest="restore", help="Do not restore stored"
2973
" state", default=None)
2974
parser.add_argument("--socket", type=int,
2975
help="Specify a file descriptor to a network"
2976
" socket to use instead of creating one")
2977
2016
parser.add_argument("--statedir", metavar="DIR",
2978
2017
help="Directory to save/restore state in")
2979
parser.add_argument("--foreground", action="store_true",
2980
help="Run in foreground", default=None)
2981
parser.add_argument("--no-zeroconf", action="store_false",
2982
dest="zeroconf", help="Do not use Zeroconf",
2985
2019
options = parser.parse_args()
2987
2026
# Default values for config file for server-global settings
2988
if gnutls.has_rawpk:
2989
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2990
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2992
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2993
":+SIGN-DSA-SHA256")
2994
server_defaults = {"interface": "",
2998
"priority": priority,
2999
"servicename": "Mandos",
3005
"statedir": "/var/lib/mandos",
3006
"foreground": "False",
2027
server_defaults = { "interface": "",
2032
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2033
"servicename": "Mandos",
2038
"statedir": "/var/lib/mandos"
3011
2041
# Parse config file for server-global settings
3012
server_config = configparser.ConfigParser(server_defaults)
2042
server_config = configparser.SafeConfigParser(server_defaults)
3013
2043
del server_defaults
3014
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3015
# Convert the ConfigParser object to a dict
2044
server_config.read(os.path.join(options.configdir,
2046
# Convert the SafeConfigParser object to a dict
3016
2047
server_settings = server_config.defaults()
3017
2048
# Use the appropriate methods on the non-string config options
3018
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3019
"foreground", "zeroconf"):
2049
for option in ("debug", "use_dbus", "use_ipv6"):
3020
2050
server_settings[option] = server_config.getboolean("DEFAULT",
3022
2052
if server_settings["port"]:
3023
2053
server_settings["port"] = server_config.getint("DEFAULT",
3025
if server_settings["socket"]:
3026
server_settings["socket"] = server_config.getint("DEFAULT",
3028
# Later, stdin will, and stdout and stderr might, be dup'ed
3029
# over with an opened os.devnull. But we don't want this to
3030
# happen with a supplied network socket.
3031
if 0 <= server_settings["socket"] <= 2:
3032
server_settings["socket"] = os.dup(server_settings
3034
2055
del server_config
3036
2057
# Override the settings from the config file with command line
3037
2058
# options, if set.
3038
2059
for option in ("interface", "address", "port", "debug",
3039
"priority", "servicename", "configdir", "use_dbus",
3040
"use_ipv6", "debuglevel", "restore", "statedir",
3041
"socket", "foreground", "zeroconf"):
2060
"priority", "servicename", "configdir",
2061
"use_dbus", "use_ipv6", "debuglevel", "restore",
3042
2063
value = getattr(options, option)
3043
2064
if value is not None:
3044
2065
server_settings[option] = value
3046
2067
# Force all strings to be unicode
3047
2068
for option in server_settings.keys():
3048
if isinstance(server_settings[option], bytes):
3049
server_settings[option] = (server_settings[option]
3051
# Force all boolean options to be boolean
3052
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3053
"foreground", "zeroconf"):
3054
server_settings[option] = bool(server_settings[option])
3055
# Debug implies foreground
3056
if server_settings["debug"]:
3057
server_settings["foreground"] = True
2069
if type(server_settings[option]) is str:
2070
server_settings[option] = unicode(server_settings[option])
3058
2071
# Now we have our good server settings in "server_settings"
3060
2073
##################################################################
3062
if (not server_settings["zeroconf"]
3063
and not (server_settings["port"]
3064
or server_settings["socket"] != "")):
3065
parser.error("Needs port or socket to work without Zeroconf")
3067
2075
# For convenience
3068
2076
debug = server_settings["debug"]
3069
2077
debuglevel = server_settings["debuglevel"]
3083
2089
level = getattr(logging, debuglevel.upper())
3084
2090
initlogger(debug, level)
3086
2092
if server_settings["servicename"] != "Mandos":
3087
syslogger.setFormatter(
3088
logging.Formatter('Mandos ({}) [%(process)d]:'
3089
' %(levelname)s: %(message)s'.format(
3090
server_settings["servicename"])))
2093
syslogger.setFormatter(logging.Formatter
2094
('Mandos (%s) [%%(process)d]:'
2095
' %%(levelname)s: %%(message)s'
2096
% server_settings["servicename"]))
3092
2098
# Parse config file with clients
3093
client_config = configparser.ConfigParser(Client.client_defaults)
2099
client_config = configparser.SafeConfigParser(Client
3094
2101
client_config.read(os.path.join(server_settings["configdir"],
3095
2102
"clients.conf"))
3097
2104
global mandos_dbus_service
3098
2105
mandos_dbus_service = None
3101
if server_settings["socket"] != "":
3102
socketfd = server_settings["socket"]
3103
tcp_server = MandosServer(
3104
(server_settings["address"], server_settings["port"]),
3106
interface=(server_settings["interface"] or None),
3108
gnutls_priority=server_settings["priority"],
3112
pidfilename = "/run/mandos.pid"
3113
if not os.path.isdir("/run/."):
3114
pidfilename = "/var/run/mandos.pid"
3117
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3118
except IOError as e:
3119
logger.error("Could not open file %r", pidfilename,
3122
for name, group in (("_mandos", "_mandos"),
3123
("mandos", "mandos"),
3124
("nobody", "nogroup")):
3126
uid = pwd.getpwnam(name).pw_uid
3127
gid = pwd.getpwnam(group).pw_gid
2107
tcp_server = MandosServer((server_settings["address"],
2108
server_settings["port"]),
2110
interface=(server_settings["interface"]
2114
server_settings["priority"],
2117
pidfilename = "/var/run/mandos.pid"
2119
pidfile = open(pidfilename, "w")
2121
logger.error("Could not open file %r", pidfilename)
2124
uid = pwd.getpwnam("_mandos").pw_uid
2125
gid = pwd.getpwnam("_mandos").pw_gid
2128
uid = pwd.getpwnam("mandos").pw_uid
2129
gid = pwd.getpwnam("mandos").pw_gid
3129
2130
except KeyError:
2132
uid = pwd.getpwnam("nobody").pw_uid
2133
gid = pwd.getpwnam("nobody").pw_gid
3138
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3140
2140
except OSError as error:
3141
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3142
.format(uid, gid, os.strerror(error.errno)))
3143
if error.errno != errno.EPERM:
2141
if error[0] != errno.EPERM:
3147
2145
# Enable all possible GnuTLS debugging
3149
2147
# "Use a log level over 10 to enable all debugging options."
3150
2148
# - GnuTLS manual
3151
gnutls.global_set_log_level(11)
2149
gnutls.library.functions.gnutls_global_set_log_level(11)
2151
@gnutls.library.types.gnutls_log_func
3154
2152
def debug_gnutls(level, string):
3155
2153
logger.debug("GnuTLS: %s", string[:-1])
3157
gnutls.global_set_log_function(debug_gnutls)
2155
(gnutls.library.functions
2156
.gnutls_global_set_log_function(debug_gnutls))
3159
2158
# Redirect stdin so all checkers get /dev/null
3160
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2159
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3161
2160
os.dup2(null, sys.stdin.fileno())
3165
2164
# Need to fork before connecting to D-Bus
3167
2166
# Close all input and output, do double fork, etc.
3170
if gi.version_info < (3, 10, 2):
3171
# multiprocessing will use threads, so before we use GLib we
3172
# need to inform GLib that threads will be used.
2169
gobject.threads_init()
3175
2171
global main_loop
3176
2172
# From the Avahi example code
3177
DBusGMainLoop(set_as_default=True)
3178
main_loop = GLib.MainLoop()
2173
DBusGMainLoop(set_as_default=True )
2174
main_loop = gobject.MainLoop()
3179
2175
bus = dbus.SystemBus()
3180
2176
# End of Avahi example code
3183
2179
bus_name = dbus.service.BusName("se.recompile.Mandos",
3186
old_bus_name = dbus.service.BusName(
3187
"se.bsnet.fukt.Mandos", bus,
3189
except dbus.exceptions.DBusException as e:
3190
logger.error("Disabling D-Bus:", exc_info=e)
2180
bus, do_not_queue=True)
2181
old_bus_name = (dbus.service.BusName
2182
("se.bsnet.fukt.Mandos", bus,
2184
except dbus.exceptions.NameExistsException as e:
2185
logger.error(unicode(e) + ", disabling D-Bus")
3191
2186
use_dbus = False
3192
2187
server_settings["use_dbus"] = False
3193
2188
tcp_server.use_dbus = False
3195
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3196
service = AvahiServiceToSyslog(
3197
name=server_settings["servicename"],
3198
servicetype="_mandos._tcp",
3201
if server_settings["interface"]:
3202
service.interface = if_nametoindex(
3203
server_settings["interface"].encode("utf-8"))
2189
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2190
service = AvahiServiceToSyslog(name =
2191
server_settings["servicename"],
2192
servicetype = "_mandos._tcp",
2193
protocol = protocol, bus = bus)
2194
if server_settings["interface"]:
2195
service.interface = (if_nametoindex
2196
(str(server_settings["interface"])))
3205
2198
global multiprocessing_manager
3206
2199
multiprocessing_manager = multiprocessing.Manager()
3208
2201
client_class = Client
3210
client_class = functools.partial(ClientDBus, bus=bus)
2203
client_class = functools.partial(ClientDBusTransitional,
3212
2206
client_settings = Client.config_parser(client_config)
3213
2207
old_client_settings = {}
3214
2208
clients_data = {}
3216
# This is used to redirect stdout and stderr for checker processes
3218
wnull = open(os.devnull, "w") # A writable /dev/null
3219
# Only used if server is running in foreground but not in debug
3221
if debug or not foreground:
3224
2210
# Get client data and settings from last running state.
3225
2211
if server_settings["restore"]:
3227
2213
with open(stored_state_path, "rb") as stored_state:
3228
if sys.version_info.major == 2:
3229
clients_data, old_client_settings = pickle.load(
3232
bytes_clients_data, bytes_old_client_settings = (
3233
pickle.load(stored_state, encoding="bytes"))
3234
# Fix bytes to strings
3237
clients_data = {(key.decode("utf-8")
3238
if isinstance(key, bytes)
3241
bytes_clients_data.items()}
3242
del bytes_clients_data
3243
for key in clients_data:
3244
value = {(k.decode("utf-8")
3245
if isinstance(k, bytes) else k): v
3247
clients_data[key].items()}
3248
clients_data[key] = value
3250
value["client_structure"] = [
3252
if isinstance(s, bytes)
3254
value["client_structure"]]
3255
# .name, .host, and .checker_command
3256
for k in ("name", "host", "checker_command"):
3257
if isinstance(value[k], bytes):
3258
value[k] = value[k].decode("utf-8")
3259
if "key_id" not in value:
3260
value["key_id"] = ""
3261
elif "fingerprint" not in value:
3262
value["fingerprint"] = ""
3263
# old_client_settings
3265
old_client_settings = {
3266
(key.decode("utf-8")
3267
if isinstance(key, bytes)
3270
bytes_old_client_settings.items()}
3271
del bytes_old_client_settings
3272
# .host and .checker_command
3273
for value in old_client_settings.values():
3274
for attribute in ("host", "checker_command"):
3275
if isinstance(value[attribute], bytes):
3276
value[attribute] = (value[attribute]
2214
clients_data, old_client_settings = (pickle.load
3278
2216
os.remove(stored_state_path)
3279
2217
except IOError as e:
3280
if e.errno == errno.ENOENT:
3281
logger.warning("Could not load persistent state:"
3282
" {}".format(os.strerror(e.errno)))
3284
logger.critical("Could not load persistent state:",
2218
logger.warning("Could not load persistent state: {0}"
2220
if e.errno != errno.ENOENT:
3287
2222
except EOFError as e:
3288
2223
logger.warning("Could not load persistent state: "
2224
"EOFError: {0}".format(e))
3292
2226
with PGPEngine() as pgp:
3293
for client_name, client in clients_data.items():
3294
# Skip removed clients
3295
if client_name not in client_settings:
2227
for client_name, client in clients_data.iteritems():
3298
2228
# Decide which value to use after restoring saved state.
3299
2229
# We have three different values: Old config file,
3300
2230
# new config file, and saved state.
3360
2291
clients_data[client_name] = client_settings[client_name]
3362
2293
# Create all client objects
3363
for client_name, client in clients_data.items():
2294
for client_name, client in clients_data.iteritems():
3364
2295
tcp_server.clients[client_name] = client_class(
3367
server_settings=server_settings)
2296
name = client_name, settings = client)
3369
2298
if not tcp_server.clients:
3370
2299
logger.warning("No clients defined")
3373
if pidfile is not None:
3377
print(pid, file=pidfile)
3379
logger.error("Could not write to file %r with PID %d",
2305
pidfile.write(str(pid) + "\n".encode("utf-8"))
2308
logger.error("Could not write to file %r with PID %d",
2311
# "pidfile" was never created
3382
2313
del pidfilename
3384
for termsig in (signal.SIGHUP, signal.SIGTERM):
3385
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3386
lambda: main_loop.quit() and False)
2314
signal.signal(signal.SIGINT, signal.SIG_IGN)
2316
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2317
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3390
@alternate_dbus_interfaces(
3391
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3392
class MandosDBusService(DBusObjectWithObjectManager):
2320
class MandosDBusService(dbus.service.Object):
3393
2321
"""A D-Bus proxy object"""
3395
2322
def __init__(self):
3396
2323
dbus.service.Object.__init__(self, bus, "/")
3398
2324
_interface = "se.recompile.Mandos"
3400
2326
@dbus.service.signal(_interface, signature="o")
3401
2327
def ClientAdded(self, objpath):
3405
2331
@dbus.service.signal(_interface, signature="ss")
3406
def ClientNotFound(self, key_id, address):
2332
def ClientNotFound(self, fingerprint, address):
3410
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3412
2336
@dbus.service.signal(_interface, signature="os")
3413
2337
def ClientRemoved(self, objpath, name):
3417
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3419
2341
@dbus.service.method(_interface, out_signature="ao")
3420
2342
def GetAllClients(self):
3422
return dbus.Array(c.dbus_object_path for c in
3423
tcp_server.clients.values())
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2344
return dbus.Array(c.dbus_object_path
2346
tcp_server.clients.itervalues())
3427
2348
@dbus.service.method(_interface,
3428
2349
out_signature="a{oa{sv}}")
3429
2350
def GetAllClientsWithProperties(self):
3431
2352
return dbus.Dictionary(
3432
{c.dbus_object_path: c.GetAll(
3433
"se.recompile.Mandos.Client")
3434
for c in tcp_server.clients.values()},
2353
((c.dbus_object_path, c.GetAll(""))
2354
for c in tcp_server.clients.itervalues()),
3435
2355
signature="oa{sv}")
3437
2357
@dbus.service.method(_interface, in_signature="o")
3438
2358
def RemoveClient(self, object_path):
3440
for c in tcp_server.clients.values():
2360
for c in tcp_server.clients.itervalues():
3441
2361
if c.dbus_object_path == object_path:
3442
2362
del tcp_server.clients[c.name]
3443
2363
c.remove_from_connection()
3444
# Don't signal the disabling
2364
# Don't signal anything except ClientRemoved
3445
2365
c.disable(quiet=True)
3446
# Emit D-Bus signal for removal
3447
self.client_removed_signal(c)
2367
self.ClientRemoved(object_path, c.name)
3449
2369
raise KeyError(object_path)
3453
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3454
out_signature="a{oa{sa{sv}}}")
3455
def GetManagedObjects(self):
3457
return dbus.Dictionary(
3458
{client.dbus_object_path:
3460
{interface: client.GetAll(interface)
3462
client._get_all_interface_names()})
3463
for client in tcp_server.clients.values()})
3465
def client_added_signal(self, client):
3466
"""Send the new standard signal and the old signal"""
3468
# New standard signal
3469
self.InterfacesAdded(
3470
client.dbus_object_path,
3472
{interface: client.GetAll(interface)
3474
client._get_all_interface_names()}))
3476
self.ClientAdded(client.dbus_object_path)
3478
def client_removed_signal(self, client):
3479
"""Send the new standard signal and the old signal"""
3481
# New standard signal
3482
self.InterfacesRemoved(
3483
client.dbus_object_path,
3484
client._get_all_interface_names())
3486
self.ClientRemoved(client.dbus_object_path,
3489
mandos_dbus_service = MandosDBusService()
3491
# Save modules to variables to exempt the modules from being
3492
# unloaded before the function registered with atexit() is run.
3493
mp = multiprocessing
2373
class MandosDBusServiceTransitional(MandosDBusService):
2374
__metaclass__ = AlternateDBusNamesMetaclass
2375
mandos_dbus_service = MandosDBusServiceTransitional()
3497
2378
"Cleanup function; run on exit"
3501
mp.active_children()
2381
multiprocessing.active_children()
3503
2382
if not (tcp_server.clients or client_settings):
3506
2385
# Store client before exiting. Secrets are encrypted with key
3507
2386
# based on what config file has. If config file is
3508
2387
# removed/edited, old secret will thus be unrecovable.
3510
2389
with PGPEngine() as pgp:
3511
for client in tcp_server.clients.values():
2390
for client in tcp_server.clients.itervalues():
3512
2391
key = client_settings[client.name]["secret"]
3513
2392
client.encrypted_secret = pgp.encrypt(client.secret,
3515
2394
client_dict = {}
3517
2396
# A list of attributes that can not be pickled
3519
exclude = {"bus", "changedstate", "secret",
3520
"checker", "server_settings"}
3521
for name, typ in inspect.getmembers(dbus.service
2398
exclude = set(("bus", "changedstate", "secret",
2400
for name, typ in (inspect.getmembers
2401
(dbus.service.Object)):
3523
2402
exclude.add(name)
3525
2404
client_dict["encrypted_secret"] = (client
3526
2405
.encrypted_secret)
3527
2406
for attr in client.client_structure:
3528
2407
if attr not in exclude:
3529
2408
client_dict[attr] = getattr(client, attr)
3531
2410
clients[client.name] = client_dict
3532
2411
del client_settings[client.name]["secret"]
3535
with tempfile.NamedTemporaryFile(
3539
dir=os.path.dirname(stored_state_path),
3540
delete=False) as stored_state:
3541
pickle.dump((clients, client_settings), stored_state,
3543
tempname = stored_state.name
2414
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2417
(stored_state_path))
2418
with os.fdopen(tempfd, "wb") as stored_state:
2419
pickle.dump((clients, client_settings), stored_state)
3544
2420
os.rename(tempname, stored_state_path)
3545
2421
except (IOError, OSError) as e:
2422
logger.warning("Could not save persistent state: {0}"
3548
2426
os.remove(tempname)
3549
2427
except NameError:
3551
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3552
logger.warning("Could not save persistent state: {}"
3553
.format(os.strerror(e.errno)))
3555
logger.warning("Could not save persistent state:",
2429
if e.errno not in set((errno.ENOENT, errno.EACCES,
3559
2433
# Delete all clients, and settings from config
3560
2434
while tcp_server.clients:
3561
2435
name, client = tcp_server.clients.popitem()
3563
2437
client.remove_from_connection()
3564
# Don't signal the disabling
2438
# Don't signal anything except ClientRemoved
3565
2439
client.disable(quiet=True)
3566
# Emit D-Bus signal for removal
3568
mandos_dbus_service.client_removed_signal(client)
2442
mandos_dbus_service.ClientRemoved(client
3569
2445
client_settings.clear()
3571
2447
atexit.register(cleanup)
3573
for client in tcp_server.clients.values():
2449
for client in tcp_server.clients.itervalues():
3575
# Emit D-Bus signal for adding
3576
mandos_dbus_service.client_added_signal(client)
2452
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3577
2453
# Need to initiate checking of clients
3578
2454
if client.enabled:
3579
2455
client.init_checker()
3581
2457
tcp_server.enable()
3582
2458
tcp_server.server_activate()
3584
2460
# Find out what port we got
3586
service.port = tcp_server.socket.getsockname()[1]
2461
service.port = tcp_server.socket.getsockname()[1]
3588
2463
logger.info("Now listening on address %r, port %d,"
3589
" flowinfo %d, scope_id %d",
3590
*tcp_server.socket.getsockname())
2464
" flowinfo %d, scope_id %d"
2465
% tcp_server.socket.getsockname())
3592
logger.info("Now listening on address %r, port %d",
3593
*tcp_server.socket.getsockname())
3595
# service.interface = tcp_server.socket.getsockname()[3]
2467
logger.info("Now listening on address %r, port %d"
2468
% tcp_server.socket.getsockname())
2470
#service.interface = tcp_server.socket.getsockname()[3]
3599
# From the Avahi example code
3602
except dbus.exceptions.DBusException as error:
3603
logger.critical("D-Bus Exception", exc_info=error)
3606
# End of Avahi example code
3609
GLib.IOChannel.unix_new(tcp_server.fileno()),
3610
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3611
lambda *args, **kwargs: (tcp_server.handle_request
3612
(*args[2:], **kwargs) or True))
2473
# From the Avahi example code
2476
except dbus.exceptions.DBusException as error:
2477
logger.critical("DBusException: %s", error)
2480
# End of Avahi example code
2482
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2483
lambda *args, **kwargs:
2484
(tcp_server.handle_request
2485
(*args[2:], **kwargs) or True))
3614
2487
logger.debug("Starting main loop")
3615
2488
main_loop.run()
3616
2489
except AvahiError as error:
3617
logger.critical("Avahi Error", exc_info=error)
2490
logger.critical("AvahiError: %s", error)
3620
2493
except KeyboardInterrupt: