63
import cPickle as pickle
70
import cPickle as pickle
64
73
import multiprocessing
67
82
import dbus.service
84
from gi.repository import GLib
70
85
from dbus.mainloop.glib import DBusGMainLoop
73
88
import xml.dom.minidom
91
# Try to find the value of SO_BINDTODEVICE:
93
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
94
# newer, and it is also the most natural place for it:
77
95
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
78
96
except AttributeError:
98
# This is where SO_BINDTODEVICE was up to and including Python
80
100
from IN import SO_BINDTODEVICE
81
101
except ImportError:
82
SO_BINDTODEVICE = None
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
89
syslogger = (logging.handlers.SysLogHandler
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
95
logger.addHandler(syslogger)
97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
101
logger.addHandler(console)
102
# In Python 2.7 it seems to have been removed entirely.
103
# Try running the C preprocessor:
105
cc = subprocess.Popen(["cc", "--language=c", "-E",
107
stdin=subprocess.PIPE,
108
stdout=subprocess.PIPE)
109
stdout = cc.communicate(
110
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
111
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
112
except (OSError, ValueError, IndexError):
114
SO_BINDTODEVICE = None
116
if sys.version_info.major == 2:
119
if sys.version_info < (3, 2):
120
configparser.Configparser = configparser.SafeConfigParser
123
stored_state_file = "clients.pickle"
125
logger = logging.getLogger()
129
if_nametoindex = ctypes.cdll.LoadLibrary(
130
ctypes.util.find_library("c")).if_nametoindex
131
except (OSError, AttributeError):
133
def if_nametoindex(interface):
134
"Get an interface index the hard way, i.e. using fcntl()"
135
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
136
with contextlib.closing(socket.socket()) as s:
137
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
138
struct.pack(b"16s16x", interface))
139
interface_index = struct.unpack("I", ifreq[16:20])[0]
140
return interface_index
143
def copy_function(func):
144
"""Make a copy of a function"""
145
if sys.version_info.major == 2:
146
return types.FunctionType(func.func_code,
152
return types.FunctionType(func.__code__,
159
def initlogger(debug, level=logging.WARNING):
160
"""init logger and add loglevel"""
163
syslogger = (logging.handlers.SysLogHandler(
164
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
166
syslogger.setFormatter(logging.Formatter
167
('Mandos [%(process)d]: %(levelname)s:'
169
logger.addHandler(syslogger)
172
console = logging.StreamHandler()
173
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
177
logger.addHandler(console)
178
logger.setLevel(level)
181
class PGPError(Exception):
182
"""Exception if encryption/decryption fails"""
186
class PGPEngine(object):
187
"""A simple class for OpenPGP symmetric encryption & decryption"""
190
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
193
output = subprocess.check_output(["gpgconf"])
194
for line in output.splitlines():
195
name, text, path = line.split(b":")
200
if e.errno != errno.ENOENT:
202
self.gnupgargs = ['--batch',
203
'--homedir', self.tempdir,
206
# Only GPG version 1 has the --no-use-agent option.
207
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
208
self.gnupgargs.append("--no-use-agent")
213
def __exit__(self, exc_type, exc_value, traceback):
221
if self.tempdir is not None:
222
# Delete contents of tempdir
223
for root, dirs, files in os.walk(self.tempdir,
225
for filename in files:
226
os.remove(os.path.join(root, filename))
228
os.rmdir(os.path.join(root, dirname))
230
os.rmdir(self.tempdir)
233
def password_encode(self, password):
234
# Passphrase can not be empty and can not contain newlines or
235
# NUL bytes. So we prefix it and hex encode it.
236
encoded = b"mandos" + binascii.hexlify(password)
237
if len(encoded) > 2048:
238
# GnuPG can't handle long passwords, so encode differently
239
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
240
.replace(b"\n", b"\\n")
241
.replace(b"\0", b"\\x00"))
244
def encrypt(self, data, password):
245
passphrase = self.password_encode(password)
246
with tempfile.NamedTemporaryFile(
247
dir=self.tempdir) as passfile:
248
passfile.write(passphrase)
250
proc = subprocess.Popen([self.gpg, '--symmetric',
254
stdin=subprocess.PIPE,
255
stdout=subprocess.PIPE,
256
stderr=subprocess.PIPE)
257
ciphertext, err = proc.communicate(input=data)
258
if proc.returncode != 0:
262
def decrypt(self, data, password):
263
passphrase = self.password_encode(password)
264
with tempfile.NamedTemporaryFile(
265
dir=self.tempdir) as passfile:
266
passfile.write(passphrase)
268
proc = subprocess.Popen([self.gpg, '--decrypt',
272
stdin=subprocess.PIPE,
273
stdout=subprocess.PIPE,
274
stderr=subprocess.PIPE)
275
decrypted_plaintext, err = proc.communicate(input=data)
276
if proc.returncode != 0:
278
return decrypted_plaintext
281
# Pretend that we have an Avahi module
283
"""This isn't so much a class as it is a module-like namespace."""
284
IF_UNSPEC = -1 # avahi-common/address.h
285
PROTO_UNSPEC = -1 # avahi-common/address.h
286
PROTO_INET = 0 # avahi-common/address.h
287
PROTO_INET6 = 1 # avahi-common/address.h
288
DBUS_NAME = "org.freedesktop.Avahi"
289
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
290
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
291
DBUS_PATH_SERVER = "/"
294
def string_array_to_txt_array(t):
295
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
296
for s in t), signature="ay")
297
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
298
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
299
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
300
SERVER_INVALID = 0 # avahi-common/defs.h
301
SERVER_REGISTERING = 1 # avahi-common/defs.h
302
SERVER_RUNNING = 2 # avahi-common/defs.h
303
SERVER_COLLISION = 3 # avahi-common/defs.h
304
SERVER_FAILURE = 4 # avahi-common/defs.h
103
307
class AvahiError(Exception):
104
308
def __init__(self, value, *args, **kwargs):
105
309
self.value = value
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
310
return super(AvahiError, self).__init__(value, *args,
110
314
class AvahiServiceError(AvahiError):
113
318
class AvahiGroupError(AvahiError):
117
322
class AvahiService(object):
118
323
"""An Avahi (Zeroconf) service.
121
326
interface: integer; avahi.IF_UNSPEC or an interface index.
122
327
Used to optionally bind to the specified interface.
123
328
name: string; Example: 'Mandos'
124
329
type: string; Example: '_mandos._tcp'.
125
See <http://www.dns-sd.org/ServiceTypes.html>
330
See <https://www.iana.org/assignments/service-names-port-numbers>
126
331
port: integer; what port to announce
127
332
TXT: list of strings; TXT record for the service
128
333
domain: string; Domain to publish on, default to .local if empty.
260
492
follow_name_owner_changes=True),
261
493
avahi.DBUS_INTERFACE_SERVER)
262
494
self.server.connect_to_signal("StateChanged",
263
self.server_state_changed)
495
self.server_state_changed)
264
496
self.server_state_changed(self.server.GetState())
267
def _timedelta_to_milliseconds(td):
268
"Convert a datetime.timedelta() to milliseconds"
269
return ((td.days * 24 * 60 * 60 * 1000)
270
+ (td.seconds * 1000)
271
+ (td.microseconds // 1000))
499
class AvahiServiceToSyslog(AvahiService):
500
def rename(self, *args, **kwargs):
501
"""Add the new name to the syslog messages"""
502
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
503
syslogger.setFormatter(logging.Formatter(
504
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
509
# Pretend that we have a GnuTLS module
510
class gnutls(object):
511
"""This isn't so much a class as it is a module-like namespace."""
513
library = ctypes.util.find_library("gnutls")
515
library = ctypes.util.find_library("gnutls-deb0")
516
_library = ctypes.cdll.LoadLibrary(library)
519
# Unless otherwise indicated, the constants and types below are
520
# all from the gnutls/gnutls.h C header file.
531
E_NO_CERTIFICATE_FOUND = -49
536
KEYID_USE_SHA256 = 1 # gnutls/x509.h
537
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
540
class session_int(ctypes.Structure):
542
session_t = ctypes.POINTER(session_int)
544
class certificate_credentials_st(ctypes.Structure):
546
certificate_credentials_t = ctypes.POINTER(
547
certificate_credentials_st)
548
certificate_type_t = ctypes.c_int
550
class datum_t(ctypes.Structure):
551
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
552
('size', ctypes.c_uint)]
554
class openpgp_crt_int(ctypes.Structure):
556
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
557
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
558
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
559
credentials_type_t = ctypes.c_int
560
transport_ptr_t = ctypes.c_void_p
561
close_request_t = ctypes.c_int
564
class Error(Exception):
565
def __init__(self, message=None, code=None, args=()):
566
# Default usage is by a message string, but if a return
567
# code is passed, convert it to a string with
570
if message is None and code is not None:
571
message = gnutls.strerror(code)
572
return super(gnutls.Error, self).__init__(
575
class CertificateSecurityError(Error):
579
class Credentials(object):
581
self._c_object = gnutls.certificate_credentials_t()
582
gnutls.certificate_allocate_credentials(
583
ctypes.byref(self._c_object))
584
self.type = gnutls.CRD_CERTIFICATE
587
gnutls.certificate_free_credentials(self._c_object)
589
class ClientSession(object):
590
def __init__(self, socket, credentials=None):
591
self._c_object = gnutls.session_t()
592
gnutls_flags = gnutls.CLIENT
593
if gnutls.check_version(b"3.5.6"):
594
gnutls_flags |= gnutls.NO_TICKETS
596
gnutls_flags |= gnutls.ENABLE_RAWPK
597
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
599
gnutls.set_default_priority(self._c_object)
600
gnutls.transport_set_ptr(self._c_object, socket.fileno())
601
gnutls.handshake_set_private_extensions(self._c_object,
604
if credentials is None:
605
credentials = gnutls.Credentials()
606
gnutls.credentials_set(self._c_object, credentials.type,
607
ctypes.cast(credentials._c_object,
609
self.credentials = credentials
612
gnutls.deinit(self._c_object)
615
return gnutls.handshake(self._c_object)
617
def send(self, data):
621
data_len -= gnutls.record_send(self._c_object,
626
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
628
# Error handling functions
629
def _error_code(result):
630
"""A function to raise exceptions on errors, suitable
631
for the 'restype' attribute on ctypes functions"""
634
if result == gnutls.E_NO_CERTIFICATE_FOUND:
635
raise gnutls.CertificateSecurityError(code=result)
636
raise gnutls.Error(code=result)
638
def _retry_on_error(result, func, arguments):
639
"""A function to retry on some errors, suitable
640
for the 'errcheck' attribute on ctypes functions"""
642
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
643
return _error_code(result)
644
result = func(*arguments)
647
# Unless otherwise indicated, the function declarations below are
648
# all from the gnutls/gnutls.h C header file.
651
priority_set_direct = _library.gnutls_priority_set_direct
652
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
653
ctypes.POINTER(ctypes.c_char_p)]
654
priority_set_direct.restype = _error_code
656
init = _library.gnutls_init
657
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
658
init.restype = _error_code
660
set_default_priority = _library.gnutls_set_default_priority
661
set_default_priority.argtypes = [session_t]
662
set_default_priority.restype = _error_code
664
record_send = _library.gnutls_record_send
665
record_send.argtypes = [session_t, ctypes.c_void_p,
667
record_send.restype = ctypes.c_ssize_t
668
record_send.errcheck = _retry_on_error
670
certificate_allocate_credentials = (
671
_library.gnutls_certificate_allocate_credentials)
672
certificate_allocate_credentials.argtypes = [
673
ctypes.POINTER(certificate_credentials_t)]
674
certificate_allocate_credentials.restype = _error_code
676
certificate_free_credentials = (
677
_library.gnutls_certificate_free_credentials)
678
certificate_free_credentials.argtypes = [
679
certificate_credentials_t]
680
certificate_free_credentials.restype = None
682
handshake_set_private_extensions = (
683
_library.gnutls_handshake_set_private_extensions)
684
handshake_set_private_extensions.argtypes = [session_t,
686
handshake_set_private_extensions.restype = None
688
credentials_set = _library.gnutls_credentials_set
689
credentials_set.argtypes = [session_t, credentials_type_t,
691
credentials_set.restype = _error_code
693
strerror = _library.gnutls_strerror
694
strerror.argtypes = [ctypes.c_int]
695
strerror.restype = ctypes.c_char_p
697
certificate_type_get = _library.gnutls_certificate_type_get
698
certificate_type_get.argtypes = [session_t]
699
certificate_type_get.restype = _error_code
701
certificate_get_peers = _library.gnutls_certificate_get_peers
702
certificate_get_peers.argtypes = [session_t,
703
ctypes.POINTER(ctypes.c_uint)]
704
certificate_get_peers.restype = ctypes.POINTER(datum_t)
706
global_set_log_level = _library.gnutls_global_set_log_level
707
global_set_log_level.argtypes = [ctypes.c_int]
708
global_set_log_level.restype = None
710
global_set_log_function = _library.gnutls_global_set_log_function
711
global_set_log_function.argtypes = [log_func]
712
global_set_log_function.restype = None
714
deinit = _library.gnutls_deinit
715
deinit.argtypes = [session_t]
716
deinit.restype = None
718
handshake = _library.gnutls_handshake
719
handshake.argtypes = [session_t]
720
handshake.restype = _error_code
721
handshake.errcheck = _retry_on_error
723
transport_set_ptr = _library.gnutls_transport_set_ptr
724
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
725
transport_set_ptr.restype = None
727
bye = _library.gnutls_bye
728
bye.argtypes = [session_t, close_request_t]
729
bye.restype = _error_code
730
bye.errcheck = _retry_on_error
732
check_version = _library.gnutls_check_version
733
check_version.argtypes = [ctypes.c_char_p]
734
check_version.restype = ctypes.c_char_p
736
_need_version = b"3.3.0"
737
if check_version(_need_version) is None:
738
raise self.Error("Needs GnuTLS {} or later"
739
.format(_need_version))
741
_tls_rawpk_version = b"3.6.6"
742
has_rawpk = bool(check_version(_tls_rawpk_version))
746
class pubkey_st(ctypes.Structure):
748
pubkey_t = ctypes.POINTER(pubkey_st)
750
x509_crt_fmt_t = ctypes.c_int
752
# All the function declarations below are from gnutls/abstract.h
753
pubkey_init = _library.gnutls_pubkey_init
754
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
755
pubkey_init.restype = _error_code
757
pubkey_import = _library.gnutls_pubkey_import
758
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
760
pubkey_import.restype = _error_code
762
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
763
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
764
ctypes.POINTER(ctypes.c_ubyte),
765
ctypes.POINTER(ctypes.c_size_t)]
766
pubkey_get_key_id.restype = _error_code
768
pubkey_deinit = _library.gnutls_pubkey_deinit
769
pubkey_deinit.argtypes = [pubkey_t]
770
pubkey_deinit.restype = None
772
# All the function declarations below are from gnutls/openpgp.h
774
openpgp_crt_init = _library.gnutls_openpgp_crt_init
775
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
776
openpgp_crt_init.restype = _error_code
778
openpgp_crt_import = _library.gnutls_openpgp_crt_import
779
openpgp_crt_import.argtypes = [openpgp_crt_t,
780
ctypes.POINTER(datum_t),
782
openpgp_crt_import.restype = _error_code
784
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
785
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
786
ctypes.POINTER(ctypes.c_uint)]
787
openpgp_crt_verify_self.restype = _error_code
789
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
790
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
791
openpgp_crt_deinit.restype = None
793
openpgp_crt_get_fingerprint = (
794
_library.gnutls_openpgp_crt_get_fingerprint)
795
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
799
openpgp_crt_get_fingerprint.restype = _error_code
801
if check_version(b"3.6.4"):
802
certificate_type_get2 = _library.gnutls_certificate_type_get2
803
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
804
certificate_type_get2.restype = _error_code
806
# Remove non-public functions
807
del _error_code, _retry_on_error
810
def call_pipe(connection, # : multiprocessing.Connection
811
func, *args, **kwargs):
812
"""This function is meant to be called by multiprocessing.Process
814
This function runs func(*args, **kwargs), and writes the resulting
815
return value on the provided multiprocessing.Connection.
817
connection.send(func(*args, **kwargs))
273
821
class Client(object):
274
822
"""A representation of a client host served by this server.
277
_approved: bool(); 'None' if not yet approved/disapproved
825
approved: bool(); 'None' if not yet approved/disapproved
278
826
approval_delay: datetime.timedelta(); Time to wait for approval
279
827
approval_duration: datetime.timedelta(); Duration of one approval
280
checker: subprocess.Popen(); a running checker process used
281
to see if the client lives.
282
'None' if no process is running.
283
checker_callback_tag: a gobject event source tag, or None
828
checker: multiprocessing.Process(); a running checker process used
829
to see if the client lives. 'None' if no process is
831
checker_callback_tag: a GLib event source tag, or None
284
832
checker_command: string; External command which is run to check
285
833
if client lives. %() expansions are done at
286
834
runtime with vars(self) as dict, so that for
287
835
instance %(name)s can be used in the command.
288
checker_initiator_tag: a gobject event source tag, or None
836
checker_initiator_tag: a GLib event source tag, or None
289
837
created: datetime.datetime(); (UTC) object creation
838
client_structure: Object describing what attributes a client has
839
and is used for storing the client at exit
290
840
current_checker_command: string; current running checker_command
291
disable_hook: If set, called by disable() as disable_hook(self)
292
disable_initiator_tag: a gobject event source tag, or None
841
disable_initiator_tag: a GLib event source tag, or None
294
843
fingerprint: string (40 or 32 hexadecimal digits); used to
295
uniquely identify the client
844
uniquely identify an OpenPGP client
845
key_id: string (64 hexadecimal digits); used to uniquely identify
846
a client using raw public keys
296
847
host: string; available for use by the checker command
297
848
interval: datetime.timedelta(); How often to start a new checker
298
849
last_approval_request: datetime.datetime(); (UTC) or None
299
850
last_checked_ok: datetime.datetime(); (UTC) or None
300
last_enabled: datetime.datetime(); (UTC)
851
last_checker_status: integer between 0 and 255 reflecting exit
852
status of last checker. -1 reflects crashed
853
checker, -2 means no checker completed yet.
854
last_checker_signal: The signal which killed the last checker, if
855
last_checker_status is -1
856
last_enabled: datetime.datetime(); (UTC) or None
301
857
name: string; from the config file, used in log messages and
302
858
D-Bus identifiers
303
859
secret: bytestring; sent verbatim (over TLS) to client
304
860
timeout: datetime.timedelta(); How long from last_checked_ok
305
861
until this client is disabled
306
extended_timeout: extra long timeout when password has been sent
862
extended_timeout: extra long timeout when secret has been sent
307
863
runtime_expansions: Allowed attributes for runtime expansion.
308
864
expires: datetime.datetime(); time (UTC) when a client will be
309
865
disabled, or None
866
server_settings: The server_settings dict from main()
312
869
runtime_expansions = ("approval_delay", "approval_duration",
313
"created", "enabled", "fingerprint",
314
"host", "interval", "last_checked_ok",
870
"created", "enabled", "expires", "key_id",
871
"fingerprint", "host", "interval",
872
"last_approval_request", "last_checked_ok",
315
873
"last_enabled", "name", "timeout")
317
def timeout_milliseconds(self):
318
"Return the 'timeout' attribute in milliseconds"
319
return _timedelta_to_milliseconds(self.timeout)
321
def extended_timeout_milliseconds(self):
322
"Return the 'extended_timeout' attribute in milliseconds"
323
return _timedelta_to_milliseconds(self.extended_timeout)
325
def interval_milliseconds(self):
326
"Return the 'interval' attribute in milliseconds"
327
return _timedelta_to_milliseconds(self.interval)
329
def approval_delay_milliseconds(self):
330
return _timedelta_to_milliseconds(self.approval_delay)
332
def __init__(self, name = None, disable_hook=None, config=None):
333
"""Note: the 'checker' key in 'config' sets the
334
'checker_command' attribute and *not* the 'checker'
876
"extended_timeout": "PT15M",
878
"checker": "fping -q -- %%(host)s",
880
"approval_delay": "PT0S",
881
"approval_duration": "PT1S",
882
"approved_by_default": "True",
887
def config_parser(config):
888
"""Construct a new dict of client settings of this form:
889
{ client_name: {setting_name: value, ...}, ...}
890
with exceptions for any special settings as defined above.
891
NOTE: Must be a pure function. Must return the same result
892
value given the same arguments.
895
for client_name in config.sections():
896
section = dict(config.items(client_name))
897
client = settings[client_name] = {}
899
client["host"] = section["host"]
900
# Reformat values from string types to Python types
901
client["approved_by_default"] = config.getboolean(
902
client_name, "approved_by_default")
903
client["enabled"] = config.getboolean(client_name,
906
# Uppercase and remove spaces from key_id and fingerprint
907
# for later comparison purposes with return value from the
908
# key_id() and fingerprint() functions
909
client["key_id"] = (section.get("key_id", "").upper()
911
client["fingerprint"] = (section["fingerprint"].upper()
913
if "secret" in section:
914
client["secret"] = codecs.decode(section["secret"]
917
elif "secfile" in section:
918
with open(os.path.expanduser(os.path.expandvars
919
(section["secfile"])),
921
client["secret"] = secfile.read()
923
raise TypeError("No secret or secfile for section {}"
925
client["timeout"] = string_to_delta(section["timeout"])
926
client["extended_timeout"] = string_to_delta(
927
section["extended_timeout"])
928
client["interval"] = string_to_delta(section["interval"])
929
client["approval_delay"] = string_to_delta(
930
section["approval_delay"])
931
client["approval_duration"] = string_to_delta(
932
section["approval_duration"])
933
client["checker_command"] = section["checker"]
934
client["last_approval_request"] = None
935
client["last_checked_ok"] = None
936
client["last_checker_status"] = -2
940
def __init__(self, settings, name=None, server_settings=None):
942
if server_settings is None:
944
self.server_settings = server_settings
945
# adding all client settings
946
for setting, value in settings.items():
947
setattr(self, setting, value)
950
if not hasattr(self, "last_enabled"):
951
self.last_enabled = datetime.datetime.utcnow()
952
if not hasattr(self, "expires"):
953
self.expires = (datetime.datetime.utcnow()
956
self.last_enabled = None
339
959
logger.debug("Creating client %r", self.name)
340
# Uppercase and remove spaces from fingerprint for later
341
# comparison purposes with return value from the fingerprint()
343
self.fingerprint = (config["fingerprint"].upper()
960
logger.debug(" Key ID: %s", self.key_id)
345
961
logger.debug(" Fingerprint: %s", self.fingerprint)
346
if "secret" in config:
347
self.secret = config["secret"].decode("base64")
348
elif "secfile" in config:
349
with open(os.path.expanduser(os.path.expandvars
350
(config["secfile"])),
352
self.secret = secfile.read()
354
raise TypeError("No secret or secfile for client %s"
356
self.host = config.get("host", "")
357
self.created = datetime.datetime.utcnow()
359
self.last_approval_request = None
360
self.last_enabled = None
361
self.last_checked_ok = None
362
self.timeout = string_to_delta(config["timeout"])
363
self.extended_timeout = string_to_delta(config["extended_timeout"])
364
self.interval = string_to_delta(config["interval"])
365
self.disable_hook = disable_hook
962
self.created = settings.get("created",
963
datetime.datetime.utcnow())
965
# attributes specific for this server instance
366
966
self.checker = None
367
967
self.checker_initiator_tag = None
368
968
self.disable_initiator_tag = None
370
969
self.checker_callback_tag = None
371
self.checker_command = config["checker"]
372
970
self.current_checker_command = None
373
self.last_connect = None
374
self._approved = None
375
self.approved_by_default = config.get("approved_by_default",
377
972
self.approvals_pending = 0
378
self.approval_delay = string_to_delta(
379
config["approval_delay"])
380
self.approval_duration = string_to_delta(
381
config["approval_duration"])
382
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
973
self.changedstate = multiprocessing_manager.Condition(
974
multiprocessing_manager.Lock())
975
self.client_structure = [attr
976
for attr in self.__dict__.keys()
977
if not attr.startswith("_")]
978
self.client_structure.append("client_structure")
980
for name, t in inspect.getmembers(
981
type(self), lambda obj: isinstance(obj, property)):
982
if not name.startswith("_"):
983
self.client_structure.append(name)
985
# Send notice to process children that client state has changed
384
986
def send_changedstate(self):
385
self.changedstate.acquire()
386
self.changedstate.notify_all()
387
self.changedstate.release()
987
with self.changedstate:
988
self.changedstate.notify_all()
389
990
def enable(self):
390
991
"""Start this client's checker and timeout hooks"""
391
992
if getattr(self, "enabled", False):
392
993
# Already enabled
394
self.send_changedstate()
395
# Schedule a new checker to be started an 'interval' from now,
396
# and every interval from then on.
397
self.checker_initiator_tag = (gobject.timeout_add
398
(self.interval_milliseconds(),
400
# Schedule a disable() when 'timeout' has passed
401
995
self.expires = datetime.datetime.utcnow() + self.timeout
402
self.disable_initiator_tag = (gobject.timeout_add
403
(self.timeout_milliseconds(),
405
996
self.enabled = True
406
997
self.last_enabled = datetime.datetime.utcnow()
407
# Also start a new checker *right now*.
999
self.send_changedstate()
410
1001
def disable(self, quiet=True):
411
1002
"""Disable this client."""
412
1003
if not getattr(self, "enabled", False):
415
self.send_changedstate()
417
1006
logger.info("Disabling client %s", self.name)
418
if getattr(self, "disable_initiator_tag", False):
419
gobject.source_remove(self.disable_initiator_tag)
1007
if getattr(self, "disable_initiator_tag", None) is not None:
1008
GLib.source_remove(self.disable_initiator_tag)
420
1009
self.disable_initiator_tag = None
421
1010
self.expires = None
422
if getattr(self, "checker_initiator_tag", False):
423
gobject.source_remove(self.checker_initiator_tag)
1011
if getattr(self, "checker_initiator_tag", None) is not None:
1012
GLib.source_remove(self.checker_initiator_tag)
424
1013
self.checker_initiator_tag = None
425
1014
self.stop_checker()
426
if self.disable_hook:
427
self.disable_hook(self)
428
1015
self.enabled = False
429
# Do not run this again if called by a gobject.timeout_add
1017
self.send_changedstate()
1018
# Do not run this again if called by a GLib.timeout_add
432
1021
def __del__(self):
433
self.disable_hook = None
436
def checker_callback(self, pid, condition, command):
1024
def init_checker(self):
1025
# Schedule a new checker to be started an 'interval' from now,
1026
# and every interval from then on.
1027
if self.checker_initiator_tag is not None:
1028
GLib.source_remove(self.checker_initiator_tag)
1029
self.checker_initiator_tag = GLib.timeout_add(
1030
int(self.interval.total_seconds() * 1000),
1032
# Schedule a disable() when 'timeout' has passed
1033
if self.disable_initiator_tag is not None:
1034
GLib.source_remove(self.disable_initiator_tag)
1035
self.disable_initiator_tag = GLib.timeout_add(
1036
int(self.timeout.total_seconds() * 1000), self.disable)
1037
# Also start a new checker *right now*.
1038
self.start_checker()
1040
def checker_callback(self, source, condition, connection,
437
1042
"""The checker has completed, so take appropriate actions."""
1043
# Read return code from connection (see call_pipe)
1044
returncode = connection.recv()
438
1047
self.checker_callback_tag = None
439
1048
self.checker = None
440
if os.WIFEXITED(condition):
441
exitstatus = os.WEXITSTATUS(condition)
1051
self.last_checker_status = returncode
1052
self.last_checker_signal = None
1053
if self.last_checker_status == 0:
443
1054
logger.info("Checker for %(name)s succeeded",
445
1056
self.checked_ok()
447
logger.info("Checker for %(name)s failed",
1058
logger.info("Checker for %(name)s failed", vars(self))
1060
self.last_checker_status = -1
1061
self.last_checker_signal = -returncode
450
1062
logger.warning("Checker for %(name)s crashed?",
453
def checked_ok(self, timeout=None):
454
"""Bump up the timeout for this client.
456
This should only be called when the client has been seen,
1066
def checked_ok(self):
1067
"""Assert that the client has been seen, alive and well."""
1068
self.last_checked_ok = datetime.datetime.utcnow()
1069
self.last_checker_status = 0
1070
self.last_checker_signal = None
1073
def bump_timeout(self, timeout=None):
1074
"""Bump up the timeout for this client."""
459
1075
if timeout is None:
460
1076
timeout = self.timeout
461
self.last_checked_ok = datetime.datetime.utcnow()
462
gobject.source_remove(self.disable_initiator_tag)
463
self.expires = datetime.datetime.utcnow() + timeout
464
self.disable_initiator_tag = (gobject.timeout_add
465
(_timedelta_to_milliseconds(timeout),
1077
if self.disable_initiator_tag is not None:
1078
GLib.source_remove(self.disable_initiator_tag)
1079
self.disable_initiator_tag = None
1080
if getattr(self, "enabled", False):
1081
self.disable_initiator_tag = GLib.timeout_add(
1082
int(timeout.total_seconds() * 1000), self.disable)
1083
self.expires = datetime.datetime.utcnow() + timeout
468
1085
def need_approval(self):
469
1086
self.last_approval_request = datetime.datetime.utcnow()
471
1088
def start_checker(self):
472
1089
"""Start a new checker subprocess if one is not running.
474
1091
If a checker already exists, leave it running and do
476
1093
# The reason for not killing a running checker is that if we
477
# did that, then if a checker (for some reason) started
478
# running slowly and taking more than 'interval' time, the
479
# client would inevitably timeout, since no checker would get
480
# a chance to run to completion. If we instead leave running
1094
# did that, and if a checker (for some reason) started running
1095
# slowly and taking more than 'interval' time, then the client
1096
# would inevitably timeout, since no checker would get a
1097
# chance to run to completion. If we instead leave running
481
1098
# checkers alone, the checker would have to take more time
482
1099
# than 'timeout' for the client to be disabled, which is as it
485
# If a checker exists, make sure it is not a zombie
487
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
488
except (AttributeError, OSError) as error:
489
if (isinstance(error, OSError)
490
and error.errno != errno.ECHILD):
494
logger.warning("Checker was a zombie")
495
gobject.source_remove(self.checker_callback_tag)
496
self.checker_callback(pid, status,
497
self.current_checker_command)
1102
if self.checker is not None and not self.checker.is_alive():
1103
logger.warning("Checker was not alive; joining")
498
1106
# Start a new checker if needed
499
1107
if self.checker is None:
1108
# Escape attributes for the shell
1110
attr: re.escape(str(getattr(self, attr)))
1111
for attr in self.runtime_expansions}
501
# In case checker_command has exactly one % operator
502
command = self.checker_command % self.host
504
# Escape attributes for the shell
505
escaped_attrs = dict(
507
re.escape(unicode(str(getattr(self, attr, "")),
511
self.runtime_expansions)
514
command = self.checker_command % escaped_attrs
515
except TypeError as error:
516
logger.error('Could not format string "%s":'
517
' %s', self.checker_command, error)
518
return True # Try again later
1113
command = self.checker_command % escaped_attrs
1114
except TypeError as error:
1115
logger.error('Could not format string "%s"',
1116
self.checker_command,
1118
return True # Try again later
519
1119
self.current_checker_command = command
521
logger.info("Starting checker %r for %s",
523
# We don't need to redirect stdout and stderr, since
524
# in normal mode, that is already done by daemon(),
525
# and in debug mode we don't want to. (Stdin is
526
# always replaced by /dev/null.)
527
self.checker = subprocess.Popen(command,
530
self.checker_callback_tag = (gobject.child_watch_add
532
self.checker_callback,
534
# The checker may have completed before the gobject
535
# watch was added. Check for this.
536
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
538
gobject.source_remove(self.checker_callback_tag)
539
self.checker_callback(pid, status, command)
540
except OSError as error:
541
logger.error("Failed to start subprocess: %s",
543
# Re-run this periodically if run by gobject.timeout_add
1120
logger.info("Starting checker %r for %s", command,
1122
# We don't need to redirect stdout and stderr, since
1123
# in normal mode, that is already done by daemon(),
1124
# and in debug mode we don't want to. (Stdin is
1125
# always replaced by /dev/null.)
1126
# The exception is when not debugging but nevertheless
1127
# running in the foreground; use the previously
1129
popen_args = {"close_fds": True,
1132
if (not self.server_settings["debug"]
1133
and self.server_settings["foreground"]):
1134
popen_args.update({"stdout": wnull,
1136
pipe = multiprocessing.Pipe(duplex=False)
1137
self.checker = multiprocessing.Process(
1139
args=(pipe[1], subprocess.call, command),
1141
self.checker.start()
1142
self.checker_callback_tag = GLib.io_add_watch(
1143
pipe[0].fileno(), GLib.IO_IN,
1144
self.checker_callback, pipe[0], command)
1145
# Re-run this periodically if run by GLib.timeout_add
546
1148
def stop_checker(self):
547
1149
"""Force the checker process, if any, to stop."""
548
1150
if self.checker_callback_tag:
549
gobject.source_remove(self.checker_callback_tag)
1151
GLib.source_remove(self.checker_callback_tag)
550
1152
self.checker_callback_tag = None
551
1153
if getattr(self, "checker", None) is None:
553
1155
logger.debug("Stopping checker for %(name)s", vars(self))
555
os.kill(self.checker.pid, signal.SIGTERM)
557
#if self.checker.poll() is None:
558
# os.kill(self.checker.pid, signal.SIGKILL)
559
except OSError as error:
560
if error.errno != errno.ESRCH: # No such process
1156
self.checker.terminate()
562
1157
self.checker = None
565
def dbus_service_property(dbus_interface, signature="v",
566
access="readwrite", byte_arrays=False):
1160
def dbus_service_property(dbus_interface,
567
1164
"""Decorators for marking methods of a DBusObjectWithProperties to
568
1165
become properties on the D-Bus.
570
1167
The decorated method will be called with no arguments by "Get"
571
1168
and with one argument by "Set".
573
1170
The parameters, where they are supported, are the same as
574
1171
dbus.service.method, except there is only "signature", since the
575
1172
type from Get() and the type sent to Set() is the same.
747
1505
except (AttributeError, xml.dom.DOMException,
748
1506
xml.parsers.expat.ExpatError) as error:
749
1507
logger.error("Failed to override Introspection method",
754
def datetime_to_dbus (dt, variant_level=0):
1513
dbus.OBJECT_MANAGER_IFACE
1514
except AttributeError:
1515
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1518
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1519
"""A D-Bus object with an ObjectManager.
1521
Classes inheriting from this exposes the standard
1522
GetManagedObjects call and the InterfacesAdded and
1523
InterfacesRemoved signals on the standard
1524
"org.freedesktop.DBus.ObjectManager" interface.
1526
Note: No signals are sent automatically; they must be sent
1529
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1530
out_signature="a{oa{sa{sv}}}")
1531
def GetManagedObjects(self):
1532
"""This function must be overridden"""
1533
raise NotImplementedError()
1535
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1536
signature="oa{sa{sv}}")
1537
def InterfacesAdded(self, object_path, interfaces_and_properties):
1540
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1541
def InterfacesRemoved(self, object_path, interfaces):
1544
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1546
path_keyword='object_path',
1547
connection_keyword='connection')
1548
def Introspect(self, object_path, connection):
1549
"""Overloading of standard D-Bus method.
1551
Override return argument name of GetManagedObjects to be
1552
"objpath_interfaces_and_properties"
1554
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1558
document = xml.dom.minidom.parseString(xmlstring)
1560
for if_tag in document.getElementsByTagName("interface"):
1561
# Fix argument name for the GetManagedObjects method
1562
if (if_tag.getAttribute("name")
1563
== dbus.OBJECT_MANAGER_IFACE):
1564
for cn in if_tag.getElementsByTagName("method"):
1565
if (cn.getAttribute("name")
1566
== "GetManagedObjects"):
1567
for arg in cn.getElementsByTagName("arg"):
1568
if (arg.getAttribute("direction")
1572
"objpath_interfaces"
1574
xmlstring = document.toxml("utf-8")
1576
except (AttributeError, xml.dom.DOMException,
1577
xml.parsers.expat.ExpatError) as error:
1578
logger.error("Failed to override Introspection method",
1583
def datetime_to_dbus(dt, variant_level=0):
755
1584
"""Convert a UTC datetime.datetime() to a D-Bus type."""
757
return dbus.String("", variant_level = variant_level)
758
return dbus.String(dt.isoformat(),
759
variant_level=variant_level)
1586
return dbus.String("", variant_level=variant_level)
1587
return dbus.String(dt.isoformat(), variant_level=variant_level)
1590
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1591
"""A class decorator; applied to a subclass of
1592
dbus.service.Object, it will add alternate D-Bus attributes with
1593
interface names according to the "alt_interface_names" mapping.
1596
@alternate_dbus_interfaces({"org.example.Interface":
1597
"net.example.AlternateInterface"})
1598
class SampleDBusObject(dbus.service.Object):
1599
@dbus.service.method("org.example.Interface")
1600
def SampleDBusMethod():
1603
The above "SampleDBusMethod" on "SampleDBusObject" will be
1604
reachable via two interfaces: "org.example.Interface" and
1605
"net.example.AlternateInterface", the latter of which will have
1606
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1607
"true", unless "deprecate" is passed with a False value.
1609
This works for methods and signals, and also for D-Bus properties
1610
(from DBusObjectWithProperties) and interfaces (from the
1611
dbus_interface_annotations decorator).
1615
for orig_interface_name, alt_interface_name in (
1616
alt_interface_names.items()):
1618
interface_names = set()
1619
# Go though all attributes of the class
1620
for attrname, attribute in inspect.getmembers(cls):
1621
# Ignore non-D-Bus attributes, and D-Bus attributes
1622
# with the wrong interface name
1623
if (not hasattr(attribute, "_dbus_interface")
1624
or not attribute._dbus_interface.startswith(
1625
orig_interface_name)):
1627
# Create an alternate D-Bus interface name based on
1629
alt_interface = attribute._dbus_interface.replace(
1630
orig_interface_name, alt_interface_name)
1631
interface_names.add(alt_interface)
1632
# Is this a D-Bus signal?
1633
if getattr(attribute, "_dbus_is_signal", False):
1634
# Extract the original non-method undecorated
1635
# function by black magic
1636
if sys.version_info.major == 2:
1637
nonmethod_func = (dict(
1638
zip(attribute.func_code.co_freevars,
1639
attribute.__closure__))
1640
["func"].cell_contents)
1642
nonmethod_func = (dict(
1643
zip(attribute.__code__.co_freevars,
1644
attribute.__closure__))
1645
["func"].cell_contents)
1646
# Create a new, but exactly alike, function
1647
# object, and decorate it to be a new D-Bus signal
1648
# with the alternate D-Bus interface name
1649
new_function = copy_function(nonmethod_func)
1650
new_function = (dbus.service.signal(
1652
attribute._dbus_signature)(new_function))
1653
# Copy annotations, if any
1655
new_function._dbus_annotations = dict(
1656
attribute._dbus_annotations)
1657
except AttributeError:
1660
# Define a creator of a function to call both the
1661
# original and alternate functions, so both the
1662
# original and alternate signals gets sent when
1663
# the function is called
1664
def fixscope(func1, func2):
1665
"""This function is a scope container to pass
1666
func1 and func2 to the "call_both" function
1667
outside of its arguments"""
1669
@functools.wraps(func2)
1670
def call_both(*args, **kwargs):
1671
"""This function will emit two D-Bus
1672
signals by calling func1 and func2"""
1673
func1(*args, **kwargs)
1674
func2(*args, **kwargs)
1675
# Make wrapper function look like a D-Bus
1677
for name, attr in inspect.getmembers(func2):
1678
if name.startswith("_dbus_"):
1679
setattr(call_both, name, attr)
1682
# Create the "call_both" function and add it to
1684
attr[attrname] = fixscope(attribute, new_function)
1685
# Is this a D-Bus method?
1686
elif getattr(attribute, "_dbus_is_method", False):
1687
# Create a new, but exactly alike, function
1688
# object. Decorate it to be a new D-Bus method
1689
# with the alternate D-Bus interface name. Add it
1692
dbus.service.method(
1694
attribute._dbus_in_signature,
1695
attribute._dbus_out_signature)
1696
(copy_function(attribute)))
1697
# Copy annotations, if any
1699
attr[attrname]._dbus_annotations = dict(
1700
attribute._dbus_annotations)
1701
except AttributeError:
1703
# Is this a D-Bus property?
1704
elif getattr(attribute, "_dbus_is_property", False):
1705
# Create a new, but exactly alike, function
1706
# object, and decorate it to be a new D-Bus
1707
# property with the alternate D-Bus interface
1708
# name. Add it to the class.
1709
attr[attrname] = (dbus_service_property(
1710
alt_interface, attribute._dbus_signature,
1711
attribute._dbus_access,
1712
attribute._dbus_get_args_options
1714
(copy_function(attribute)))
1715
# Copy annotations, if any
1717
attr[attrname]._dbus_annotations = dict(
1718
attribute._dbus_annotations)
1719
except AttributeError:
1721
# Is this a D-Bus interface?
1722
elif getattr(attribute, "_dbus_is_interface", False):
1723
# Create a new, but exactly alike, function
1724
# object. Decorate it to be a new D-Bus interface
1725
# with the alternate D-Bus interface name. Add it
1728
dbus_interface_annotations(alt_interface)
1729
(copy_function(attribute)))
1731
# Deprecate all alternate interfaces
1732
iname = "_AlternateDBusNames_interface_annotation{}"
1733
for interface_name in interface_names:
1735
@dbus_interface_annotations(interface_name)
1737
return {"org.freedesktop.DBus.Deprecated":
1739
# Find an unused name
1740
for aname in (iname.format(i)
1741
for i in itertools.count()):
1742
if aname not in attr:
1746
# Replace the class with a new subclass of it with
1747
# methods, signals, etc. as created above.
1748
if sys.version_info.major == 2:
1749
cls = type(b"{}Alternate".format(cls.__name__),
1752
cls = type("{}Alternate".format(cls.__name__),
1759
@alternate_dbus_interfaces({"se.recompile.Mandos":
1760
"se.bsnet.fukt.Mandos"})
762
1761
class ClientDBus(Client, DBusObjectWithProperties):
763
1762
"""A Client class using D-Bus
766
1765
dbus_object_path: dbus.ObjectPath
767
1766
bus: dbus.SystemBus()
770
1769
runtime_expansions = (Client.runtime_expansions
771
+ ("dbus_object_path",))
1770
+ ("dbus_object_path", ))
1772
_interface = "se.recompile.Mandos.Client"
773
1774
# dbus.service.Object doesn't use super(), so we can't either.
775
def __init__(self, bus = None, *args, **kwargs):
776
self._approvals_pending = 0
1776
def __init__(self, bus=None, *args, **kwargs):
778
1778
Client.__init__(self, *args, **kwargs)
779
1779
# Only now, when this client is initialized, can it show up on
781
client_object_name = unicode(self.name).translate(
1781
client_object_name = str(self.name).translate(
782
1782
{ord("."): ord("_"),
783
1783
ord("-"): ord("_")})
784
self.dbus_object_path = (dbus.ObjectPath
785
("/clients/" + client_object_name))
1784
self.dbus_object_path = dbus.ObjectPath(
1785
"/clients/" + client_object_name)
786
1786
DBusObjectWithProperties.__init__(self, self.bus,
787
1787
self.dbus_object_path)
789
def notifychangeproperty(transform_func,
790
dbus_name, type_func=lambda x: x,
792
""" Modify a variable so that its a property that announce its
794
transform_fun: Function that takes a value and transform it to
796
dbus_name: DBus name of the variable
1789
def notifychangeproperty(transform_func, dbus_name,
1790
type_func=lambda x: x,
1792
invalidate_only=False,
1793
_interface=_interface):
1794
""" Modify a variable so that it's a property which announces
1795
its changes to DBus.
1797
transform_fun: Function that takes a value and a variant_level
1798
and transforms it to a D-Bus type.
1799
dbus_name: D-Bus name of the variable
797
1800
type_func: Function that transform the value before sending it
799
variant_level: DBus variant level. default: 1
1801
to the D-Bus. Default: no transform
1802
variant_level: D-Bus variant level. Default: 1
1804
attrname = "_{}".format(dbus_name)
802
1806
def setter(self, value):
803
old_value = real_value[0]
804
real_value[0] = value
805
1807
if hasattr(self, "dbus_object_path"):
806
if type_func(old_value) != type_func(real_value[0]):
807
dbus_value = transform_func(type_func(real_value[0]),
809
self.PropertyChanged(dbus.String(dbus_name),
812
return property(lambda self: real_value[0], setter)
1808
if (not hasattr(self, attrname) or
1809
type_func(getattr(self, attrname, None))
1810
!= type_func(value)):
1812
self.PropertiesChanged(
1813
_interface, dbus.Dictionary(),
1814
dbus.Array((dbus_name, )))
1816
dbus_value = transform_func(
1818
variant_level=variant_level)
1819
self.PropertyChanged(dbus.String(dbus_name),
1821
self.PropertiesChanged(
1823
dbus.Dictionary({dbus.String(dbus_name):
1826
setattr(self, attrname, value)
1828
return property(lambda self: getattr(self, attrname), setter)
815
1830
expires = notifychangeproperty(datetime_to_dbus, "Expires")
816
1831
approvals_pending = notifychangeproperty(dbus.Boolean,
817
1832
"ApprovalPending",
819
1834
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
820
1835
last_enabled = notifychangeproperty(datetime_to_dbus,
822
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
823
type_func = lambda checker: checker is not None)
1837
checker = notifychangeproperty(
1838
dbus.Boolean, "CheckerRunning",
1839
type_func=lambda checker: checker is not None)
824
1840
last_checked_ok = notifychangeproperty(datetime_to_dbus,
825
1841
"LastCheckedOK")
826
last_approval_request = notifychangeproperty(datetime_to_dbus,
827
"LastApprovalRequest")
1842
last_checker_status = notifychangeproperty(dbus.Int16,
1843
"LastCheckerStatus")
1844
last_approval_request = notifychangeproperty(
1845
datetime_to_dbus, "LastApprovalRequest")
828
1846
approved_by_default = notifychangeproperty(dbus.Boolean,
829
1847
"ApprovedByDefault")
830
approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
831
type_func = _timedelta_to_milliseconds)
832
approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
833
type_func = _timedelta_to_milliseconds)
1848
approval_delay = notifychangeproperty(
1849
dbus.UInt64, "ApprovalDelay",
1850
type_func=lambda td: td.total_seconds() * 1000)
1851
approval_duration = notifychangeproperty(
1852
dbus.UInt64, "ApprovalDuration",
1853
type_func=lambda td: td.total_seconds() * 1000)
834
1854
host = notifychangeproperty(dbus.String, "Host")
835
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
836
type_func = _timedelta_to_milliseconds)
837
extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
838
type_func = _timedelta_to_milliseconds)
839
interval = notifychangeproperty(dbus.UInt16, "Interval",
840
type_func = _timedelta_to_milliseconds)
1855
timeout = notifychangeproperty(
1856
dbus.UInt64, "Timeout",
1857
type_func=lambda td: td.total_seconds() * 1000)
1858
extended_timeout = notifychangeproperty(
1859
dbus.UInt64, "ExtendedTimeout",
1860
type_func=lambda td: td.total_seconds() * 1000)
1861
interval = notifychangeproperty(
1862
dbus.UInt64, "Interval",
1863
type_func=lambda td: td.total_seconds() * 1000)
841
1864
checker_command = notifychangeproperty(dbus.String, "Checker")
1865
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1866
invalidate_only=True)
843
1868
del notifychangeproperty
845
1870
def __del__(self, *args, **kwargs):
847
1872
self.remove_from_connection()
1134
2190
self.start_checker()
1136
2192
self.stop_checker()
1138
2194
# ObjectPath - property
2196
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2197
"org.freedesktop.DBus.Deprecated": "true"})
1139
2198
@dbus_service_property(_interface, signature="o", access="read")
1140
2199
def ObjectPath_dbus_property(self):
1141
return self.dbus_object_path # is already a dbus.ObjectPath
2200
return self.dbus_object_path # is already a dbus.ObjectPath
1143
2202
# Secret = property
1144
@dbus_service_property(_interface, signature="ay",
1145
access="write", byte_arrays=True)
2204
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2206
@dbus_service_property(_interface,
1146
2210
def Secret_dbus_property(self, value):
1147
self.secret = str(value)
2211
self.secret = bytes(value)
1152
2216
class ProxyClient(object):
1153
def __init__(self, child_pipe, fpr, address):
2217
def __init__(self, child_pipe, key_id, fpr, address):
1154
2218
self._pipe = child_pipe
1155
self._pipe.send(('init', fpr, address))
2219
self._pipe.send(('init', key_id, fpr, address))
1156
2220
if not self._pipe.recv():
2221
raise KeyError(key_id or fpr)
1159
2223
def __getattribute__(self, name):
1160
if(name == '_pipe'):
1161
2225
return super(ProxyClient, self).__getattribute__(name)
1162
2226
self._pipe.send(('getattr', name))
1163
2227
data = self._pipe.recv()
1164
2228
if data[0] == 'data':
1166
2230
if data[0] == 'function':
1167
2232
def func(*args, **kwargs):
1168
2233
self._pipe.send(('funcall', name, args, kwargs))
1169
2234
return self._pipe.recv()[1]
1172
2238
def __setattr__(self, name, value):
1173
if(name == '_pipe'):
1174
2240
return super(ProxyClient, self).__setattr__(name, value)
1175
2241
self._pipe.send(('setattr', name, value))
1178
2244
class ClientHandler(socketserver.BaseRequestHandler, object):
1179
2245
"""A class to handle client connections.
1181
2247
Instantiated once for each connection to handle it.
1182
2248
Note: This will run in its own forked process."""
1184
2250
def handle(self):
1185
2251
with contextlib.closing(self.server.child_pipe) as child_pipe:
1186
2252
logger.info("TCP connection from: %s",
1187
unicode(self.client_address))
2253
str(self.client_address))
1188
2254
logger.debug("Pipe FD: %d",
1189
2255
self.server.child_pipe.fileno())
1191
session = (gnutls.connection
1192
.ClientSession(self.request,
1194
.X509Credentials()))
1196
# Note: gnutls.connection.X509Credentials is really a
1197
# generic GnuTLS certificate credentials object so long as
1198
# no X.509 keys are added to it. Therefore, we can use it
1199
# here despite using OpenPGP certificates.
1201
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1202
# "+AES-256-CBC", "+SHA1",
1203
# "+COMP-NULL", "+CTYPE-OPENPGP",
2257
session = gnutls.ClientSession(self.request)
2259
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2260
# "+AES-256-CBC", "+SHA1",
2261
# "+COMP-NULL", "+CTYPE-OPENPGP",
1205
2263
# Use a fallback default, since this MUST be set.
1206
2264
priority = self.server.gnutls_priority
1207
2265
if priority is None:
1208
2266
priority = "NORMAL"
1209
(gnutls.library.functions
1210
.gnutls_priority_set_direct(session._c_object,
2267
gnutls.priority_set_direct(session._c_object,
2268
priority.encode("utf-8"),
1213
2271
# Start communication using the Mandos protocol
1214
2272
# Get protocol number
1215
2273
line = self.request.makefile().readline()
1216
2274
logger.debug("Protocol version: %r", line)
1218
2276
if int(line.strip().split()[0]) > 1:
2277
raise RuntimeError(line)
1220
2278
except (ValueError, IndexError, RuntimeError) as error:
1221
2279
logger.error("Unknown protocol version: %s", error)
1224
2282
# Start GnuTLS connection
1226
2284
session.handshake()
1227
except gnutls.errors.GNUTLSError as error:
2285
except gnutls.Error as error:
1228
2286
logger.warning("Handshake failed: %s", error)
1229
2287
# Do not run session.bye() here: the session is not
1230
2288
# established. Just abandon the request.
1232
2290
logger.debug("Handshake succeeded")
1234
2292
approval_required = False
1237
fpr = self.fingerprint(self.peer_certificate
1240
gnutls.errors.GNUTLSError) as error:
1241
logger.warning("Bad certificate: %s", error)
1243
logger.debug("Fingerprint: %s", fpr)
1246
client = ProxyClient(child_pipe, fpr,
2294
if gnutls.has_rawpk:
2297
key_id = self.key_id(
2298
self.peer_certificate(session))
2299
except (TypeError, gnutls.Error) as error:
2300
logger.warning("Bad certificate: %s", error)
2302
logger.debug("Key ID: %s", key_id)
2307
fpr = self.fingerprint(
2308
self.peer_certificate(session))
2309
except (TypeError, gnutls.Error) as error:
2310
logger.warning("Bad certificate: %s", error)
2312
logger.debug("Fingerprint: %s", fpr)
2315
client = ProxyClient(child_pipe, key_id, fpr,
1247
2316
self.client_address)
1248
2317
except KeyError:
1251
2320
if client.approval_delay:
1252
2321
delay = client.approval_delay
1253
2322
client.approvals_pending += 1
1254
2323
approval_required = True
1257
2326
if not client.enabled:
1258
2327
logger.info("Client %s is disabled",
1260
2329
if self.server.use_dbus:
1261
2330
# Emit D-Bus signal
1262
client.Rejected("Disabled")
2331
client.Rejected("Disabled")
1265
if client._approved or not client.approval_delay:
1266
#We are approved or approval is disabled
2334
if client.approved or not client.approval_delay:
2335
# We are approved or approval is disabled
1268
elif client._approved is None:
2337
elif client.approved is None:
1269
2338
logger.info("Client %s needs approval",
1271
2340
if self.server.use_dbus:
1272
2341
# Emit D-Bus signal
1273
2342
client.NeedApproval(
1274
client.approval_delay_milliseconds(),
1275
client.approved_by_default)
2343
client.approval_delay.total_seconds()
2344
* 1000, client.approved_by_default)
1277
2346
logger.warning("Client %s was not approved",
1303
2371
delay -= time2 - time
1306
while sent_size < len(client.secret):
1308
sent = session.send(client.secret[sent_size:])
1309
except gnutls.errors.GNUTLSError as error:
1310
logger.warning("gnutls send failed")
1312
logger.debug("Sent: %d, remaining: %d",
1313
sent, len(client.secret)
1314
- (sent_size + sent))
2374
session.send(client.secret)
2375
except gnutls.Error as error:
2376
logger.warning("gnutls send failed",
1317
2380
logger.info("Sending secret to %s", client.name)
1318
# bump the timeout as if seen
1319
client.checked_ok(client.extended_timeout)
2381
# bump the timeout using extended_timeout
2382
client.bump_timeout(client.extended_timeout)
1320
2383
if self.server.use_dbus:
1321
2384
# Emit D-Bus signal
1322
2385
client.GotSecret()
1325
2388
if approval_required:
1326
2389
client.approvals_pending -= 1
1329
except gnutls.errors.GNUTLSError as error:
1330
logger.warning("GnuTLS bye failed")
2392
except gnutls.Error as error:
2393
logger.warning("GnuTLS bye failed",
1333
2397
def peer_certificate(session):
1334
"Return the peer's OpenPGP certificate as a bytestring"
1335
# If not an OpenPGP certificate...
1336
if (gnutls.library.functions
1337
.gnutls_certificate_type_get(session._c_object)
1338
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1339
# ...do the normal thing
1340
return session.peer_certificate
2398
"Return the peer's certificate as a bytestring"
2400
cert_type = gnutls.certificate_type_get2(session._c_object,
2402
except AttributeError:
2403
cert_type = gnutls.certificate_type_get(session._c_object)
2404
if gnutls.has_rawpk:
2405
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2407
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2408
# If not a valid certificate type...
2409
if cert_type not in valid_cert_types:
2410
logger.info("Cert type %r not in %r", cert_type,
2412
# ...return invalid data
1341
2414
list_size = ctypes.c_uint(1)
1342
cert_list = (gnutls.library.functions
1343
.gnutls_certificate_get_peers
2415
cert_list = (gnutls.certificate_get_peers
1344
2416
(session._c_object, ctypes.byref(list_size)))
1345
2417
if not bool(cert_list) and list_size.value != 0:
1346
raise gnutls.errors.GNUTLSError("error getting peer"
2418
raise gnutls.Error("error getting peer certificate")
1348
2419
if list_size.value == 0:
1350
2421
cert = cert_list[0]
1351
2422
return ctypes.string_at(cert.data, cert.size)
2425
def key_id(certificate):
2426
"Convert a certificate bytestring to a hexdigit key ID"
2427
# New GnuTLS "datum" with the public key
2428
datum = gnutls.datum_t(
2429
ctypes.cast(ctypes.c_char_p(certificate),
2430
ctypes.POINTER(ctypes.c_ubyte)),
2431
ctypes.c_uint(len(certificate)))
2432
# XXX all these need to be created in the gnutls "module"
2433
# New empty GnuTLS certificate
2434
pubkey = gnutls.pubkey_t()
2435
gnutls.pubkey_init(ctypes.byref(pubkey))
2436
# Import the raw public key into the certificate
2437
gnutls.pubkey_import(pubkey,
2438
ctypes.byref(datum),
2439
gnutls.X509_FMT_DER)
2440
# New buffer for the key ID
2441
buf = ctypes.create_string_buffer(32)
2442
buf_len = ctypes.c_size_t(len(buf))
2443
# Get the key ID from the raw public key into the buffer
2444
gnutls.pubkey_get_key_id(pubkey,
2445
gnutls.KEYID_USE_SHA256,
2446
ctypes.cast(ctypes.byref(buf),
2447
ctypes.POINTER(ctypes.c_ubyte)),
2448
ctypes.byref(buf_len))
2449
# Deinit the certificate
2450
gnutls.pubkey_deinit(pubkey)
2452
# Convert the buffer to a Python bytestring
2453
key_id = ctypes.string_at(buf, buf_len.value)
2454
# Convert the bytestring to hexadecimal notation
2455
hex_key_id = binascii.hexlify(key_id).upper()
1354
2459
def fingerprint(openpgp):
1355
2460
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1356
2461
# New GnuTLS "datum" with the OpenPGP public key
1357
datum = (gnutls.library.types
1358
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1361
ctypes.c_uint(len(openpgp))))
2462
datum = gnutls.datum_t(
2463
ctypes.cast(ctypes.c_char_p(openpgp),
2464
ctypes.POINTER(ctypes.c_ubyte)),
2465
ctypes.c_uint(len(openpgp)))
1362
2466
# New empty GnuTLS certificate
1363
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1364
(gnutls.library.functions
1365
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2467
crt = gnutls.openpgp_crt_t()
2468
gnutls.openpgp_crt_init(ctypes.byref(crt))
1366
2469
# Import the OpenPGP public key into the certificate
1367
(gnutls.library.functions
1368
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1369
gnutls.library.constants
1370
.GNUTLS_OPENPGP_FMT_RAW))
2470
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2471
gnutls.OPENPGP_FMT_RAW)
1371
2472
# Verify the self signature in the key
1372
2473
crtverify = ctypes.c_uint()
1373
(gnutls.library.functions
1374
.gnutls_openpgp_crt_verify_self(crt, 0,
1375
ctypes.byref(crtverify)))
2474
gnutls.openpgp_crt_verify_self(crt, 0,
2475
ctypes.byref(crtverify))
1376
2476
if crtverify.value != 0:
1377
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1378
raise (gnutls.errors.CertificateSecurityError
2477
gnutls.openpgp_crt_deinit(crt)
2478
raise gnutls.CertificateSecurityError(code
1380
2480
# New buffer for the fingerprint
1381
2481
buf = ctypes.create_string_buffer(20)
1382
2482
buf_len = ctypes.c_size_t()
1383
2483
# Get the fingerprint from the certificate into the buffer
1384
(gnutls.library.functions
1385
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1386
ctypes.byref(buf_len)))
2484
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2485
ctypes.byref(buf_len))
1387
2486
# Deinit the certificate
1388
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2487
gnutls.openpgp_crt_deinit(crt)
1389
2488
# Convert the buffer to a Python bytestring
1390
2489
fpr = ctypes.string_at(buf, buf_len.value)
1391
2490
# Convert the bytestring to hexadecimal notation
1392
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2491
hex_fpr = binascii.hexlify(fpr).upper()
1396
2495
class MultiprocessingMixIn(object):
1397
2496
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1398
2498
def sub_process_main(self, request, address):
1400
2500
self.finish_request(request, address)
1402
2502
self.handle_error(request, address)
1403
2503
self.close_request(request)
1405
2505
def process_request(self, request, address):
1406
2506
"""Start a new process to process the request."""
1407
multiprocessing.Process(target = self.sub_process_main,
1408
args = (request, address)).start()
2507
proc = multiprocessing.Process(target=self.sub_process_main,
2508
args=(request, address))
1411
2513
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1412
2514
""" adds a pipe to the MixIn """
1413
2516
def process_request(self, request, client_address):
1414
2517
"""Overrides and wraps the original process_request().
1416
2519
This function creates a new pipe in self.pipe
1418
2521
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1420
super(MultiprocessingMixInWithPipe,
1421
self).process_request(request, client_address)
2523
proc = MultiprocessingMixIn.process_request(self, request,
1422
2525
self.child_pipe.close()
1423
self.add_pipe(parent_pipe)
1425
def add_pipe(self, parent_pipe):
2526
self.add_pipe(parent_pipe, proc)
2528
def add_pipe(self, parent_pipe, proc):
1426
2529
"""Dummy function; override as necessary"""
1427
raise NotImplementedError
2530
raise NotImplementedError()
1430
2533
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1431
2534
socketserver.TCPServer, object):
1432
2535
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1435
2538
enabled: Boolean; whether this server is activated yet
1436
2539
interface: None or a network interface name (string)
1437
2540
use_ipv6: Boolean; to use IPv6 or not
1439
2543
def __init__(self, server_address, RequestHandlerClass,
1440
interface=None, use_ipv6=True):
2547
"""If socketfd is set, use that file descriptor instead of
2548
creating a new one with socket.socket().
1441
2550
self.interface = interface
1443
2552
self.address_family = socket.AF_INET6
2553
if socketfd is not None:
2554
# Save the file descriptor
2555
self.socketfd = socketfd
2556
# Save the original socket.socket() function
2557
self.socket_socket = socket.socket
2559
# To implement --socket, we monkey patch socket.socket.
2561
# (When socketserver.TCPServer is a new-style class, we
2562
# could make self.socket into a property instead of monkey
2563
# patching socket.socket.)
2565
# Create a one-time-only replacement for socket.socket()
2566
@functools.wraps(socket.socket)
2567
def socket_wrapper(*args, **kwargs):
2568
# Restore original function so subsequent calls are
2570
socket.socket = self.socket_socket
2571
del self.socket_socket
2572
# This time only, return a new socket object from the
2573
# saved file descriptor.
2574
return socket.fromfd(self.socketfd, *args, **kwargs)
2575
# Replace socket.socket() function with wrapper
2576
socket.socket = socket_wrapper
2577
# The socketserver.TCPServer.__init__ will call
2578
# socket.socket(), which might be our replacement,
2579
# socket_wrapper(), if socketfd was set.
1444
2580
socketserver.TCPServer.__init__(self, server_address,
1445
2581
RequestHandlerClass)
1446
2583
def server_bind(self):
1447
2584
"""This overrides the normal server_bind() function
1448
2585
to bind to an interface if one was specified, and also NOT to
1449
2586
bind to an address or port if they were not specified."""
2587
global SO_BINDTODEVICE
1450
2588
if self.interface is not None:
1451
2589
if SO_BINDTODEVICE is None:
1452
logger.error("SO_BINDTODEVICE does not exist;"
1453
" cannot bind to interface %s",
1457
self.socket.setsockopt(socket.SOL_SOCKET,
1461
except socket.error as error:
1462
if error[0] == errno.EPERM:
1463
logger.error("No permission to"
1464
" bind to interface %s",
1466
elif error[0] == errno.ENOPROTOOPT:
1467
logger.error("SO_BINDTODEVICE not available;"
1468
" cannot bind to interface %s",
2590
# Fall back to a hard-coded value which seems to be
2592
logger.warning("SO_BINDTODEVICE not found, trying 25")
2593
SO_BINDTODEVICE = 25
2595
self.socket.setsockopt(
2596
socket.SOL_SOCKET, SO_BINDTODEVICE,
2597
(self.interface + "\0").encode("utf-8"))
2598
except socket.error as error:
2599
if error.errno == errno.EPERM:
2600
logger.error("No permission to bind to"
2601
" interface %s", self.interface)
2602
elif error.errno == errno.ENOPROTOOPT:
2603
logger.error("SO_BINDTODEVICE not available;"
2604
" cannot bind to interface %s",
2606
elif error.errno == errno.ENODEV:
2607
logger.error("Interface %s does not exist,"
2608
" cannot bind", self.interface)
1472
2611
# Only bind(2) the socket if we really need to.
1473
2612
if self.server_address[0] or self.server_address[1]:
2613
if self.server_address[1]:
2614
self.allow_reuse_address = True
1474
2615
if not self.server_address[0]:
1475
2616
if self.address_family == socket.AF_INET6:
1476
any_address = "::" # in6addr_any
2617
any_address = "::" # in6addr_any
1478
any_address = socket.INADDR_ANY
2619
any_address = "0.0.0.0" # INADDR_ANY
1479
2620
self.server_address = (any_address,
1480
2621
self.server_address[1])
1481
2622
elif not self.server_address[1]:
1482
self.server_address = (self.server_address[0],
2623
self.server_address = (self.server_address[0], 0)
1484
2624
# if self.interface:
1485
2625
# self.server_address = (self.server_address[0],
1493
2633
class MandosServer(IPv6_TCPServer):
1494
2634
"""Mandos server.
1497
2637
clients: set of Client objects
1498
2638
gnutls_priority GnuTLS priority string
1499
2639
use_dbus: Boolean; to emit D-Bus signals or not
1501
Assumes a gobject.MainLoop event loop.
2641
Assumes a GLib.MainLoop event loop.
1503
2644
def __init__(self, server_address, RequestHandlerClass,
1504
interface=None, use_ipv6=True, clients=None,
1505
gnutls_priority=None, use_dbus=True):
2648
gnutls_priority=None,
1506
2651
self.enabled = False
1507
2652
self.clients = clients
1508
2653
if self.clients is None:
1509
self.clients = set()
1510
2655
self.use_dbus = use_dbus
1511
2656
self.gnutls_priority = gnutls_priority
1512
2657
IPv6_TCPServer.__init__(self, server_address,
1513
2658
RequestHandlerClass,
1514
interface = interface,
1515
use_ipv6 = use_ipv6)
2659
interface=interface,
1516
2663
def server_activate(self):
1517
2664
if self.enabled:
1518
2665
return socketserver.TCPServer.server_activate(self)
1519
2667
def enable(self):
1520
2668
self.enabled = True
1521
def add_pipe(self, parent_pipe):
2670
def add_pipe(self, parent_pipe, proc):
1522
2671
# Call "handle_ipc" for both data and EOF events
1523
gobject.io_add_watch(parent_pipe.fileno(),
1524
gobject.IO_IN | gobject.IO_HUP,
1525
functools.partial(self.handle_ipc,
1526
parent_pipe = parent_pipe))
1528
def handle_ipc(self, source, condition, parent_pipe=None,
2673
parent_pipe.fileno(),
2674
GLib.IO_IN | GLib.IO_HUP,
2675
functools.partial(self.handle_ipc,
2676
parent_pipe=parent_pipe,
2679
def handle_ipc(self, source, condition,
1529
2682
client_object=None):
1531
gobject.IO_IN: "IN", # There is data to read.
1532
gobject.IO_OUT: "OUT", # Data can be written (without
1534
gobject.IO_PRI: "PRI", # There is urgent data to read.
1535
gobject.IO_ERR: "ERR", # Error condition.
1536
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1537
# broken, usually for pipes and
1540
conditions_string = ' | '.join(name
1542
condition_names.iteritems()
1543
if cond & condition)
1544
# error or the other end of multiprocessing.Pipe has closed
1545
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2683
# error, or the other end of multiprocessing.Pipe has closed
2684
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2685
# Wait for other process to exit
1548
2689
# Read a request from the child
1549
2690
request = parent_pipe.recv()
1550
2691
command = request[0]
1552
2693
if command == 'init':
1554
address = request[2]
1556
for c in self.clients:
1557
if c.fingerprint == fpr:
2694
key_id = request[1].decode("ascii")
2695
fpr = request[2].decode("ascii")
2696
address = request[3]
2698
for c in self.clients.values():
2699
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2701
if key_id and c.key_id == key_id:
2704
if fpr and c.fingerprint == fpr:
1561
logger.info("Client not found for fingerprint: %s, ad"
1562
"dress: %s", fpr, address)
2708
logger.info("Client not found for key ID: %s, address"
2709
": %s", key_id or fpr, address)
1563
2710
if self.use_dbus:
1564
2711
# Emit D-Bus signal
1565
mandos_dbus_service.ClientNotFound(fpr, address[0])
2712
mandos_dbus_service.ClientNotFound(key_id or fpr,
1566
2714
parent_pipe.send(False)
1569
gobject.io_add_watch(parent_pipe.fileno(),
1570
gobject.IO_IN | gobject.IO_HUP,
1571
functools.partial(self.handle_ipc,
1572
parent_pipe = parent_pipe,
1573
client_object = client))
2718
parent_pipe.fileno(),
2719
GLib.IO_IN | GLib.IO_HUP,
2720
functools.partial(self.handle_ipc,
2721
parent_pipe=parent_pipe,
2723
client_object=client))
1574
2724
parent_pipe.send(True)
1575
# remove the old hook in favor of the new above hook on same fileno
2725
# remove the old hook in favor of the new above hook on
1577
2728
if command == 'funcall':
1578
2729
funcname = request[1]
1579
2730
args = request[2]
1580
2731
kwargs = request[3]
1582
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2733
parent_pipe.send(('data', getattr(client_object,
1584
2737
if command == 'getattr':
1585
2738
attrname = request[1]
1586
if callable(client_object.__getattribute__(attrname)):
1587
parent_pipe.send(('function',))
2739
if isinstance(client_object.__getattribute__(attrname),
2740
collections.Callable):
2741
parent_pipe.send(('function', ))
1589
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2744
'data', client_object.__getattribute__(attrname)))
1591
2746
if command == 'setattr':
1592
2747
attrname = request[1]
1593
2748
value = request[2]
1594
2749
setattr(client_object, attrname, value)
2754
def rfc3339_duration_to_delta(duration):
2755
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2757
>>> rfc3339_duration_to_delta("P7D")
2758
datetime.timedelta(7)
2759
>>> rfc3339_duration_to_delta("PT60S")
2760
datetime.timedelta(0, 60)
2761
>>> rfc3339_duration_to_delta("PT60M")
2762
datetime.timedelta(0, 3600)
2763
>>> rfc3339_duration_to_delta("PT24H")
2764
datetime.timedelta(1)
2765
>>> rfc3339_duration_to_delta("P1W")
2766
datetime.timedelta(7)
2767
>>> rfc3339_duration_to_delta("PT5M30S")
2768
datetime.timedelta(0, 330)
2769
>>> rfc3339_duration_to_delta("P1DT3M20S")
2770
datetime.timedelta(1, 200)
2773
# Parsing an RFC 3339 duration with regular expressions is not
2774
# possible - there would have to be multiple places for the same
2775
# values, like seconds. The current code, while more esoteric, is
2776
# cleaner without depending on a parsing library. If Python had a
2777
# built-in library for parsing we would use it, but we'd like to
2778
# avoid excessive use of external libraries.
2780
# New type for defining tokens, syntax, and semantics all-in-one
2781
Token = collections.namedtuple("Token", (
2782
"regexp", # To match token; if "value" is not None, must have
2783
# a "group" containing digits
2784
"value", # datetime.timedelta or None
2785
"followers")) # Tokens valid after this token
2786
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2787
# the "duration" ABNF definition in RFC 3339, Appendix A.
2788
token_end = Token(re.compile(r"$"), None, frozenset())
2789
token_second = Token(re.compile(r"(\d+)S"),
2790
datetime.timedelta(seconds=1),
2791
frozenset((token_end, )))
2792
token_minute = Token(re.compile(r"(\d+)M"),
2793
datetime.timedelta(minutes=1),
2794
frozenset((token_second, token_end)))
2795
token_hour = Token(re.compile(r"(\d+)H"),
2796
datetime.timedelta(hours=1),
2797
frozenset((token_minute, token_end)))
2798
token_time = Token(re.compile(r"T"),
2800
frozenset((token_hour, token_minute,
2802
token_day = Token(re.compile(r"(\d+)D"),
2803
datetime.timedelta(days=1),
2804
frozenset((token_time, token_end)))
2805
token_month = Token(re.compile(r"(\d+)M"),
2806
datetime.timedelta(weeks=4),
2807
frozenset((token_day, token_end)))
2808
token_year = Token(re.compile(r"(\d+)Y"),
2809
datetime.timedelta(weeks=52),
2810
frozenset((token_month, token_end)))
2811
token_week = Token(re.compile(r"(\d+)W"),
2812
datetime.timedelta(weeks=1),
2813
frozenset((token_end, )))
2814
token_duration = Token(re.compile(r"P"), None,
2815
frozenset((token_year, token_month,
2816
token_day, token_time,
2818
# Define starting values:
2820
value = datetime.timedelta()
2822
# Following valid tokens
2823
followers = frozenset((token_duration, ))
2824
# String left to parse
2826
# Loop until end token is found
2827
while found_token is not token_end:
2828
# Search for any currently valid tokens
2829
for token in followers:
2830
match = token.regexp.match(s)
2831
if match is not None:
2833
if token.value is not None:
2834
# Value found, parse digits
2835
factor = int(match.group(1), 10)
2836
# Add to value so far
2837
value += factor * token.value
2838
# Strip token from string
2839
s = token.regexp.sub("", s, 1)
2842
# Set valid next tokens
2843
followers = found_token.followers
2846
# No currently valid tokens were found
2847
raise ValueError("Invalid RFC 3339 duration: {!r}"
1599
2853
def string_to_delta(interval):
1600
2854
"""Parse a string and return a datetime.timedelta
1602
2856
>>> string_to_delta('7d')
1603
2857
datetime.timedelta(7)
1604
2858
>>> string_to_delta('60s')
1717
2953
parser.add_argument("--no-dbus", action="store_false",
1718
2954
dest="use_dbus", help="Do not provide D-Bus"
1719
" system bus interface")
2955
" system bus interface", default=None)
1720
2956
parser.add_argument("--no-ipv6", action="store_false",
1721
dest="use_ipv6", help="Do not use IPv6")
2957
dest="use_ipv6", help="Do not use IPv6",
2959
parser.add_argument("--no-restore", action="store_false",
2960
dest="restore", help="Do not restore stored"
2961
" state", default=None)
2962
parser.add_argument("--socket", type=int,
2963
help="Specify a file descriptor to a network"
2964
" socket to use instead of creating one")
2965
parser.add_argument("--statedir", metavar="DIR",
2966
help="Directory to save/restore state in")
2967
parser.add_argument("--foreground", action="store_true",
2968
help="Run in foreground", default=None)
2969
parser.add_argument("--no-zeroconf", action="store_false",
2970
dest="zeroconf", help="Do not use Zeroconf",
1722
2973
options = parser.parse_args()
1724
2975
if options.check:
2977
fail_count, test_count = doctest.testmod()
2978
sys.exit(os.EX_OK if fail_count == 0 else 1)
1729
2980
# Default values for config file for server-global settings
1730
server_defaults = { "interface": "",
1735
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1736
"servicename": "Mandos",
2981
if gnutls.has_rawpk:
2982
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2983
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2985
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2986
":+SIGN-DSA-SHA256")
2987
server_defaults = {"interface": "",
2991
"priority": priority,
2992
"servicename": "Mandos",
2998
"statedir": "/var/lib/mandos",
2999
"foreground": "False",
1742
3004
# Parse config file for server-global settings
1743
server_config = configparser.SafeConfigParser(server_defaults)
3005
server_config = configparser.ConfigParser(server_defaults)
1744
3006
del server_defaults
1745
server_config.read(os.path.join(options.configdir,
1747
# Convert the SafeConfigParser object to a dict
3007
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3008
# Convert the ConfigParser object to a dict
1748
3009
server_settings = server_config.defaults()
1749
3010
# Use the appropriate methods on the non-string config options
1750
for option in ("debug", "use_dbus", "use_ipv6"):
3011
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3012
"foreground", "zeroconf"):
1751
3013
server_settings[option] = server_config.getboolean("DEFAULT",
1753
3015
if server_settings["port"]:
1754
3016
server_settings["port"] = server_config.getint("DEFAULT",
3018
if server_settings["socket"]:
3019
server_settings["socket"] = server_config.getint("DEFAULT",
3021
# Later, stdin will, and stdout and stderr might, be dup'ed
3022
# over with an opened os.devnull. But we don't want this to
3023
# happen with a supplied network socket.
3024
if 0 <= server_settings["socket"] <= 2:
3025
server_settings["socket"] = os.dup(server_settings
1756
3027
del server_config
1758
3029
# Override the settings from the config file with command line
1759
3030
# options, if set.
1760
3031
for option in ("interface", "address", "port", "debug",
1761
"priority", "servicename", "configdir",
1762
"use_dbus", "use_ipv6", "debuglevel"):
3032
"priority", "servicename", "configdir", "use_dbus",
3033
"use_ipv6", "debuglevel", "restore", "statedir",
3034
"socket", "foreground", "zeroconf"):
1763
3035
value = getattr(options, option)
1764
3036
if value is not None:
1765
3037
server_settings[option] = value
1767
3039
# Force all strings to be unicode
1768
3040
for option in server_settings.keys():
1769
if type(server_settings[option]) is str:
1770
server_settings[option] = unicode(server_settings[option])
3041
if isinstance(server_settings[option], bytes):
3042
server_settings[option] = (server_settings[option]
3044
# Force all boolean options to be boolean
3045
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3046
"foreground", "zeroconf"):
3047
server_settings[option] = bool(server_settings[option])
3048
# Debug implies foreground
3049
if server_settings["debug"]:
3050
server_settings["foreground"] = True
1771
3051
# Now we have our good server settings in "server_settings"
1773
3053
##################################################################
3055
if (not server_settings["zeroconf"]
3056
and not (server_settings["port"]
3057
or server_settings["socket"] != "")):
3058
parser.error("Needs port or socket to work without Zeroconf")
1775
3060
# For convenience
1776
3061
debug = server_settings["debug"]
1777
3062
debuglevel = server_settings["debuglevel"]
1778
3063
use_dbus = server_settings["use_dbus"]
1779
3064
use_ipv6 = server_settings["use_ipv6"]
3065
stored_state_path = os.path.join(server_settings["statedir"],
3067
foreground = server_settings["foreground"]
3068
zeroconf = server_settings["zeroconf"]
3071
initlogger(debug, logging.DEBUG)
3076
level = getattr(logging, debuglevel.upper())
3077
initlogger(debug, level)
1781
3079
if server_settings["servicename"] != "Mandos":
1782
syslogger.setFormatter(logging.Formatter
1783
('Mandos (%s) [%%(process)d]:'
1784
' %%(levelname)s: %%(message)s'
1785
% server_settings["servicename"]))
3080
syslogger.setFormatter(
3081
logging.Formatter('Mandos ({}) [%(process)d]:'
3082
' %(levelname)s: %(message)s'.format(
3083
server_settings["servicename"])))
1787
3085
# Parse config file with clients
1788
client_defaults = { "timeout": "5m",
1789
"extended_timeout": "15m",
1791
"checker": "fping -q -- %%(host)s",
1793
"approval_delay": "0s",
1794
"approval_duration": "1s",
1796
client_config = configparser.SafeConfigParser(client_defaults)
3086
client_config = configparser.ConfigParser(Client.client_defaults)
1797
3087
client_config.read(os.path.join(server_settings["configdir"],
1798
3088
"clients.conf"))
1800
3090
global mandos_dbus_service
1801
3091
mandos_dbus_service = None
1803
tcp_server = MandosServer((server_settings["address"],
1804
server_settings["port"]),
1806
interface=(server_settings["interface"]
1810
server_settings["priority"],
1813
pidfilename = "/var/run/mandos.pid"
1815
pidfile = open(pidfilename, "w")
1817
logger.error("Could not open file %r", pidfilename)
1820
uid = pwd.getpwnam("_mandos").pw_uid
1821
gid = pwd.getpwnam("_mandos").pw_gid
1824
uid = pwd.getpwnam("mandos").pw_uid
1825
gid = pwd.getpwnam("mandos").pw_gid
3094
if server_settings["socket"] != "":
3095
socketfd = server_settings["socket"]
3096
tcp_server = MandosServer(
3097
(server_settings["address"], server_settings["port"]),
3099
interface=(server_settings["interface"] or None),
3101
gnutls_priority=server_settings["priority"],
3105
pidfilename = "/run/mandos.pid"
3106
if not os.path.isdir("/run/."):
3107
pidfilename = "/var/run/mandos.pid"
3110
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3111
except IOError as e:
3112
logger.error("Could not open file %r", pidfilename,
3115
for name, group in (("_mandos", "_mandos"),
3116
("mandos", "mandos"),
3117
("nobody", "nogroup")):
3119
uid = pwd.getpwnam(name).pw_uid
3120
gid = pwd.getpwnam(group).pw_gid
1826
3122
except KeyError:
1828
uid = pwd.getpwnam("nobody").pw_uid
1829
gid = pwd.getpwnam("nobody").pw_gid
3131
logger.debug("Did setuid/setgid to {}:{}".format(uid,
1836
3133
except OSError as error:
1837
if error[0] != errno.EPERM:
1840
if not debug and not debuglevel:
1841
syslogger.setLevel(logging.WARNING)
1842
console.setLevel(logging.WARNING)
1844
level = getattr(logging, debuglevel.upper())
1845
syslogger.setLevel(level)
1846
console.setLevel(level)
3134
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3135
.format(uid, gid, os.strerror(error.errno)))
3136
if error.errno != errno.EPERM:
1849
3140
# Enable all possible GnuTLS debugging
1851
3142
# "Use a log level over 10 to enable all debugging options."
1852
3143
# - GnuTLS manual
1853
gnutls.library.functions.gnutls_global_set_log_level(11)
1855
@gnutls.library.types.gnutls_log_func
3144
gnutls.global_set_log_level(11)
1856
3147
def debug_gnutls(level, string):
1857
3148
logger.debug("GnuTLS: %s", string[:-1])
1859
(gnutls.library.functions
1860
.gnutls_global_set_log_function(debug_gnutls))
3150
gnutls.global_set_log_function(debug_gnutls)
1862
3152
# Redirect stdin so all checkers get /dev/null
1863
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3153
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1864
3154
os.dup2(null, sys.stdin.fileno())
1868
# No console logging
1869
logger.removeHandler(console)
1871
3158
# Need to fork before connecting to D-Bus
1873
3160
# Close all input and output, do double fork, etc.
3163
if gi.version_info < (3, 10, 2):
3164
# multiprocessing will use threads, so before we use GLib we
3165
# need to inform GLib that threads will be used.
1876
3168
global main_loop
1877
3169
# From the Avahi example code
1878
DBusGMainLoop(set_as_default=True )
1879
main_loop = gobject.MainLoop()
3170
DBusGMainLoop(set_as_default=True)
3171
main_loop = GLib.MainLoop()
1880
3172
bus = dbus.SystemBus()
1881
3173
# End of Avahi example code
1884
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1885
bus, do_not_queue=True)
1886
except dbus.exceptions.NameExistsException as e:
1887
logger.error(unicode(e) + ", disabling D-Bus")
3176
bus_name = dbus.service.BusName("se.recompile.Mandos",
3179
old_bus_name = dbus.service.BusName(
3180
"se.bsnet.fukt.Mandos", bus,
3182
except dbus.exceptions.DBusException as e:
3183
logger.error("Disabling D-Bus:", exc_info=e)
1888
3184
use_dbus = False
1889
3185
server_settings["use_dbus"] = False
1890
3186
tcp_server.use_dbus = False
1891
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1892
service = AvahiService(name = server_settings["servicename"],
1893
servicetype = "_mandos._tcp",
1894
protocol = protocol, bus = bus)
1895
if server_settings["interface"]:
1896
service.interface = (if_nametoindex
1897
(str(server_settings["interface"])))
3188
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3189
service = AvahiServiceToSyslog(
3190
name=server_settings["servicename"],
3191
servicetype="_mandos._tcp",
3194
if server_settings["interface"]:
3195
service.interface = if_nametoindex(
3196
server_settings["interface"].encode("utf-8"))
1899
3198
global multiprocessing_manager
1900
3199
multiprocessing_manager = multiprocessing.Manager()
1902
3201
client_class = Client
1904
client_class = functools.partial(ClientDBus, bus = bus)
1905
def client_config_items(config, section):
1906
special_settings = {
1907
"approved_by_default":
1908
lambda: config.getboolean(section,
1909
"approved_by_default"),
1911
for name, value in config.items(section):
3203
client_class = functools.partial(ClientDBus, bus=bus)
3205
client_settings = Client.config_parser(client_config)
3206
old_client_settings = {}
3209
# This is used to redirect stdout and stderr for checker processes
3211
wnull = open(os.devnull, "w") # A writable /dev/null
3212
# Only used if server is running in foreground but not in debug
3214
if debug or not foreground:
3217
# Get client data and settings from last running state.
3218
if server_settings["restore"]:
3220
with open(stored_state_path, "rb") as stored_state:
3221
if sys.version_info.major == 2:
3222
clients_data, old_client_settings = pickle.load(
3225
bytes_clients_data, bytes_old_client_settings = (
3226
pickle.load(stored_state, encoding="bytes"))
3227
# Fix bytes to strings
3230
clients_data = {(key.decode("utf-8")
3231
if isinstance(key, bytes)
3234
bytes_clients_data.items()}
3235
del bytes_clients_data
3236
for key in clients_data:
3237
value = {(k.decode("utf-8")
3238
if isinstance(k, bytes) else k): v
3240
clients_data[key].items()}
3241
clients_data[key] = value
3243
value["client_structure"] = [
3245
if isinstance(s, bytes)
3247
value["client_structure"]]
3249
for k in ("name", "host"):
3250
if isinstance(value[k], bytes):
3251
value[k] = value[k].decode("utf-8")
3252
if "key_id" not in value:
3253
value["key_id"] = ""
3254
elif "fingerprint" not in value:
3255
value["fingerprint"] = ""
3256
# old_client_settings
3258
old_client_settings = {
3259
(key.decode("utf-8")
3260
if isinstance(key, bytes)
3263
bytes_old_client_settings.items()}
3264
del bytes_old_client_settings
3266
for value in old_client_settings.values():
3267
if isinstance(value["host"], bytes):
3268
value["host"] = (value["host"]
3270
os.remove(stored_state_path)
3271
except IOError as e:
3272
if e.errno == errno.ENOENT:
3273
logger.warning("Could not load persistent state:"
3274
" {}".format(os.strerror(e.errno)))
3276
logger.critical("Could not load persistent state:",
3279
except EOFError as e:
3280
logger.warning("Could not load persistent state: "
3284
with PGPEngine() as pgp:
3285
for client_name, client in clients_data.items():
3286
# Skip removed clients
3287
if client_name not in client_settings:
3290
# Decide which value to use after restoring saved state.
3291
# We have three different values: Old config file,
3292
# new config file, and saved state.
3293
# New config value takes precedence if it differs from old
3294
# config value, otherwise use saved state.
3295
for name, value in client_settings[client_name].items():
3297
# For each value in new config, check if it
3298
# differs from the old config value (Except for
3299
# the "secret" attribute)
3300
if (name != "secret"
3302
old_client_settings[client_name][name])):
3303
client[name] = value
3307
# Clients who has passed its expire date can still be
3308
# enabled if its last checker was successful. A Client
3309
# whose checker succeeded before we stored its state is
3310
# assumed to have successfully run all checkers during
3312
if client["enabled"]:
3313
if datetime.datetime.utcnow() >= client["expires"]:
3314
if not client["last_checked_ok"]:
3316
"disabling client {} - Client never "
3317
"performed a successful checker".format(
3319
client["enabled"] = False
3320
elif client["last_checker_status"] != 0:
3322
"disabling client {} - Client last"
3323
" checker failed with error code"
3326
client["last_checker_status"]))
3327
client["enabled"] = False
3329
client["expires"] = (
3330
datetime.datetime.utcnow()
3331
+ client["timeout"])
3332
logger.debug("Last checker succeeded,"
3333
" keeping {} enabled".format(
1913
yield (name, special_settings[name]())
1917
tcp_server.clients.update(set(
1918
client_class(name = section,
1919
config= dict(client_config_items(
1920
client_config, section)))
1921
for section in client_config.sections()))
3336
client["secret"] = pgp.decrypt(
3337
client["encrypted_secret"],
3338
client_settings[client_name]["secret"])
3340
# If decryption fails, we use secret from new settings
3341
logger.debug("Failed to decrypt {} old secret".format(
3343
client["secret"] = (client_settings[client_name]
3346
# Add/remove clients based on new changes made to config
3347
for client_name in (set(old_client_settings)
3348
- set(client_settings)):
3349
del clients_data[client_name]
3350
for client_name in (set(client_settings)
3351
- set(old_client_settings)):
3352
clients_data[client_name] = client_settings[client_name]
3354
# Create all client objects
3355
for client_name, client in clients_data.items():
3356
tcp_server.clients[client_name] = client_class(
3359
server_settings=server_settings)
1922
3361
if not tcp_server.clients:
1923
3362
logger.warning("No clients defined")
1929
pidfile.write(str(pid) + "\n".encode("utf-8"))
1932
logger.error("Could not write to file %r with PID %d",
1935
# "pidfile" was never created
3365
if pidfile is not None:
3369
print(pid, file=pidfile)
3371
logger.error("Could not write to file %r with PID %d",
1937
3374
del pidfilename
1939
signal.signal(signal.SIGINT, signal.SIG_IGN)
1941
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1942
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3376
for termsig in (signal.SIGHUP, signal.SIGTERM):
3377
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3378
lambda: main_loop.quit() and False)
1945
class MandosDBusService(dbus.service.Object):
3382
@alternate_dbus_interfaces(
3383
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3384
class MandosDBusService(DBusObjectWithObjectManager):
1946
3385
"""A D-Bus proxy object"""
1947
3387
def __init__(self):
1948
3388
dbus.service.Object.__init__(self, bus, "/")
1949
_interface = "se.bsnet.fukt.Mandos"
3390
_interface = "se.recompile.Mandos"
1951
3392
@dbus.service.signal(_interface, signature="o")
1952
3393
def ClientAdded(self, objpath):
1956
3397
@dbus.service.signal(_interface, signature="ss")
1957
def ClientNotFound(self, fingerprint, address):
3398
def ClientNotFound(self, key_id, address):
3402
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
1961
3404
@dbus.service.signal(_interface, signature="os")
1962
3405
def ClientRemoved(self, objpath, name):
3409
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
1966
3411
@dbus.service.method(_interface, out_signature="ao")
1967
3412
def GetAllClients(self):
1969
return dbus.Array(c.dbus_object_path
1970
for c in tcp_server.clients)
3414
return dbus.Array(c.dbus_object_path for c in
3415
tcp_server.clients.values())
3417
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
1972
3419
@dbus.service.method(_interface,
1973
3420
out_signature="a{oa{sv}}")
1974
3421
def GetAllClientsWithProperties(self):
1976
3423
return dbus.Dictionary(
1977
((c.dbus_object_path, c.GetAll(""))
1978
for c in tcp_server.clients),
3424
{c.dbus_object_path: c.GetAll(
3425
"se.recompile.Mandos.Client")
3426
for c in tcp_server.clients.values()},
1979
3427
signature="oa{sv}")
1981
3429
@dbus.service.method(_interface, in_signature="o")
1982
3430
def RemoveClient(self, object_path):
1984
for c in tcp_server.clients:
3432
for c in tcp_server.clients.values():
1985
3433
if c.dbus_object_path == object_path:
1986
tcp_server.clients.remove(c)
3434
del tcp_server.clients[c.name]
1987
3435
c.remove_from_connection()
1988
# Don't signal anything except ClientRemoved
3436
# Don't signal the disabling
1989
3437
c.disable(quiet=True)
1991
self.ClientRemoved(object_path, c.name)
3438
# Emit D-Bus signal for removal
3439
self.client_removed_signal(c)
1993
3441
raise KeyError(object_path)
3445
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3446
out_signature="a{oa{sa{sv}}}")
3447
def GetManagedObjects(self):
3449
return dbus.Dictionary(
3450
{client.dbus_object_path:
3452
{interface: client.GetAll(interface)
3454
client._get_all_interface_names()})
3455
for client in tcp_server.clients.values()})
3457
def client_added_signal(self, client):
3458
"""Send the new standard signal and the old signal"""
3460
# New standard signal
3461
self.InterfacesAdded(
3462
client.dbus_object_path,
3464
{interface: client.GetAll(interface)
3466
client._get_all_interface_names()}))
3468
self.ClientAdded(client.dbus_object_path)
3470
def client_removed_signal(self, client):
3471
"""Send the new standard signal and the old signal"""
3473
# New standard signal
3474
self.InterfacesRemoved(
3475
client.dbus_object_path,
3476
client._get_all_interface_names())
3478
self.ClientRemoved(client.dbus_object_path,
1997
3481
mandos_dbus_service = MandosDBusService()
3483
# Save modules to variables to exempt the modules from being
3484
# unloaded before the function registered with atexit() is run.
3485
mp = multiprocessing
2000
3489
"Cleanup function; run on exit"
3493
mp.active_children()
3495
if not (tcp_server.clients or client_settings):
3498
# Store client before exiting. Secrets are encrypted with key
3499
# based on what config file has. If config file is
3500
# removed/edited, old secret will thus be unrecovable.
3502
with PGPEngine() as pgp:
3503
for client in tcp_server.clients.values():
3504
key = client_settings[client.name]["secret"]
3505
client.encrypted_secret = pgp.encrypt(client.secret,
3509
# A list of attributes that can not be pickled
3511
exclude = {"bus", "changedstate", "secret",
3512
"checker", "server_settings"}
3513
for name, typ in inspect.getmembers(dbus.service
3517
client_dict["encrypted_secret"] = (client
3519
for attr in client.client_structure:
3520
if attr not in exclude:
3521
client_dict[attr] = getattr(client, attr)
3523
clients[client.name] = client_dict
3524
del client_settings[client.name]["secret"]
3527
with tempfile.NamedTemporaryFile(
3531
dir=os.path.dirname(stored_state_path),
3532
delete=False) as stored_state:
3533
pickle.dump((clients, client_settings), stored_state,
3535
tempname = stored_state.name
3536
os.rename(tempname, stored_state_path)
3537
except (IOError, OSError) as e:
3543
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3544
logger.warning("Could not save persistent state: {}"
3545
.format(os.strerror(e.errno)))
3547
logger.warning("Could not save persistent state:",
3551
# Delete all clients, and settings from config
2003
3552
while tcp_server.clients:
2004
client = tcp_server.clients.pop()
3553
name, client = tcp_server.clients.popitem()
2006
3555
client.remove_from_connection()
2007
client.disable_hook = None
2008
# Don't signal anything except ClientRemoved
3556
# Don't signal the disabling
2009
3557
client.disable(quiet=True)
3558
# Emit D-Bus signal for removal
2012
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
3560
mandos_dbus_service.client_removed_signal(client)
3561
client_settings.clear()
2015
3563
atexit.register(cleanup)
2017
for client in tcp_server.clients:
3565
for client in tcp_server.clients.values():
2020
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3567
# Emit D-Bus signal for adding
3568
mandos_dbus_service.client_added_signal(client)
3569
# Need to initiate checking of clients
3571
client.init_checker()
2023
3573
tcp_server.enable()
2024
3574
tcp_server.server_activate()
2026
3576
# Find out what port we got
2027
service.port = tcp_server.socket.getsockname()[1]
3578
service.port = tcp_server.socket.getsockname()[1]
2029
3580
logger.info("Now listening on address %r, port %d,"
2030
" flowinfo %d, scope_id %d"
2031
% tcp_server.socket.getsockname())
3581
" flowinfo %d, scope_id %d",
3582
*tcp_server.socket.getsockname())
2033
logger.info("Now listening on address %r, port %d"
2034
% tcp_server.socket.getsockname())
2036
#service.interface = tcp_server.socket.getsockname()[3]
3584
logger.info("Now listening on address %r, port %d",
3585
*tcp_server.socket.getsockname())
3587
# service.interface = tcp_server.socket.getsockname()[3]
2039
# From the Avahi example code
2042
except dbus.exceptions.DBusException as error:
2043
logger.critical("DBusException: %s", error)
2046
# End of Avahi example code
2048
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2049
lambda *args, **kwargs:
2050
(tcp_server.handle_request
2051
(*args[2:], **kwargs) or True))
3591
# From the Avahi example code
3594
except dbus.exceptions.DBusException as error:
3595
logger.critical("D-Bus Exception", exc_info=error)
3598
# End of Avahi example code
3600
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3601
lambda *args, **kwargs:
3602
(tcp_server.handle_request
3603
(*args[2:], **kwargs) or True))
2053
3605
logger.debug("Starting main loop")
2054
3606
main_loop.run()
2055
3607
except AvahiError as error:
2056
logger.critical("AvahiError: %s", error)
3608
logger.critical("Avahi Error", exc_info=error)
2059
3611
except KeyboardInterrupt: