104
107
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
108
with contextlib.closing(socket.socket()) as s:
106
109
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
109
interface_index = struct.unpack(str("I"),
110
struct.pack(b"16s16x", interface))
111
interface_index = struct.unpack("I", ifreq[16:20])[0]
111
112
return interface_index
114
115
def initlogger(debug, level=logging.WARNING):
115
116
"""init logger and add loglevel"""
117
119
syslogger = (logging.handlers.SysLogHandler
119
121
logging.handlers.SysLogHandler.LOG_DAEMON,
120
address = str("/dev/log")))
122
address = "/dev/log"))
121
123
syslogger.setFormatter(logging.Formatter
122
124
('Mandos [%(process)d]: %(levelname)s:'
223
225
class AvahiError(Exception):
224
226
def __init__(self, value, *args, **kwargs):
225
227
self.value = value
226
super(AvahiError, self).__init__(value, *args, **kwargs)
227
def __unicode__(self):
228
return unicode(repr(self.value))
228
return super(AvahiError, self).__init__(value, *args,
230
231
class AvahiServiceError(AvahiError):
281
282
" after %i retries, exiting.",
282
283
self.rename_count)
283
284
raise AvahiServiceError("Too many renames")
284
self.name = unicode(self.server
285
.GetAlternativeServiceName(self.name))
285
self.name = str(self.server
286
.GetAlternativeServiceName(self.name))
286
287
logger.info("Changing Zeroconf service name to %r ...",
337
338
elif state == avahi.ENTRY_GROUP_FAILURE:
338
339
logger.critical("Avahi: Error in group state changed %s",
340
raise AvahiGroupError("State changed: {0!s}"
341
raise AvahiGroupError("State changed: {!s}"
343
344
def cleanup(self):
394
395
"""Add the new name to the syslog messages"""
395
396
ret = AvahiService.rename(self)
396
397
syslogger.setFormatter(logging.Formatter
397
('Mandos ({0}) [%(process)d]:'
398
('Mandos ({}) [%(process)d]:'
398
399
' %(levelname)s: %(message)s'
399
400
.format(self.name)))
403
def timedelta_to_milliseconds(td):
404
"Convert a datetime.timedelta() to milliseconds"
405
return ((td.days * 24 * 60 * 60 * 1000)
406
+ (td.seconds * 1000)
407
+ (td.microseconds // 1000))
410
404
class Client(object):
411
405
"""A representation of a client host served by this server.
467
461
"enabled": "True",
470
def timeout_milliseconds(self):
471
"Return the 'timeout' attribute in milliseconds"
472
return timedelta_to_milliseconds(self.timeout)
474
def extended_timeout_milliseconds(self):
475
"Return the 'extended_timeout' attribute in milliseconds"
476
return timedelta_to_milliseconds(self.extended_timeout)
478
def interval_milliseconds(self):
479
"Return the 'interval' attribute in milliseconds"
480
return timedelta_to_milliseconds(self.interval)
482
def approval_delay_milliseconds(self):
483
return timedelta_to_milliseconds(self.approval_delay)
486
465
def config_parser(config):
487
466
"""Construct a new dict of client settings of this form:
512
491
"rb") as secfile:
513
492
client["secret"] = secfile.read()
515
raise TypeError("No secret or secfile for section {0}"
494
raise TypeError("No secret or secfile for section {}"
516
495
.format(section))
517
496
client["timeout"] = string_to_delta(section["timeout"])
518
497
client["extended_timeout"] = string_to_delta(
535
514
server_settings = {}
536
515
self.server_settings = server_settings
537
516
# adding all client settings
538
for setting, value in settings.iteritems():
517
for setting, value in settings.items():
539
518
setattr(self, setting, value)
624
603
if self.checker_initiator_tag is not None:
625
604
gobject.source_remove(self.checker_initiator_tag)
626
605
self.checker_initiator_tag = (gobject.timeout_add
627
(self.interval_milliseconds(),
607
.total_seconds() * 1000),
628
608
self.start_checker))
629
609
# Schedule a disable() when 'timeout' has passed
630
610
if self.disable_initiator_tag is not None:
631
611
gobject.source_remove(self.disable_initiator_tag)
632
612
self.disable_initiator_tag = (gobject.timeout_add
633
(self.timeout_milliseconds(),
614
.total_seconds() * 1000),
635
616
# Also start a new checker *right now*.
636
617
self.start_checker()
668
649
self.disable_initiator_tag = None
669
650
if getattr(self, "enabled", False):
670
651
self.disable_initiator_tag = (gobject.timeout_add
671
(timedelta_to_milliseconds
672
(timeout), self.disable))
652
(int(timeout.total_seconds()
653
* 1000), self.disable))
673
654
self.expires = datetime.datetime.utcnow() + timeout
675
656
def need_approval(self):
706
687
# Start a new checker if needed
707
688
if self.checker is None:
708
689
# Escape attributes for the shell
709
escaped_attrs = dict(
710
(attr, re.escape(unicode(getattr(self, attr))))
712
self.runtime_expansions)
690
escaped_attrs = { attr:
691
re.escape(str(getattr(self, attr)))
692
for attr in self.runtime_expansions }
714
694
command = self.checker_command % escaped_attrs
715
695
except TypeError as error:
796
776
# "Set" method, so we fail early here:
797
777
if byte_arrays and signature != "ay":
798
778
raise ValueError("Byte arrays not supported for non-'ay'"
799
" signature {0!r}".format(signature))
779
" signature {!r}".format(signature))
800
780
def decorator(func):
801
781
func._dbus_is_property = True
802
782
func._dbus_interface = dbus_interface
850
830
class DBusPropertyException(dbus.exceptions.DBusException):
851
831
"""A base class for D-Bus property-related exceptions
853
def __unicode__(self):
854
return unicode(str(self))
857
835
class DBusPropertyAccessException(DBusPropertyException):
858
836
"""A property's access permissions disallows an operation.
881
859
If called like _is_dbus_thing("method") it returns a function
882
860
suitable for use as predicate to inspect.getmembers().
884
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
862
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
887
865
def _get_all_dbus_things(self, thing):
937
915
# signatures other than "ay".
938
916
if prop._dbus_signature != "ay":
939
917
raise ValueError("Byte arrays not supported for non-"
940
"'ay' signature {0!r}"
918
"'ay' signature {!r}"
941
919
.format(prop._dbus_signature))
942
920
value = dbus.ByteArray(b''.join(chr(byte)
943
921
for byte in value))
1009
987
"_dbus_annotations",
1011
for name, value in annots.iteritems():
989
for name, value in annots.items():
1012
990
ann_tag = document.createElement(
1014
992
ann_tag.setAttribute("name", name)
1017
995
# Add interface annotation tags
1018
996
for annotation, value in dict(
1019
997
itertools.chain.from_iterable(
1020
annotations().iteritems()
998
annotations().items()
1021
999
for name, annotations in
1022
1000
self._get_all_dbus_things("interface")
1023
1001
if name == if_tag.getAttribute("name")
1025
1003
ann_tag = document.createElement("annotation")
1026
1004
ann_tag.setAttribute("name", annotation)
1027
1005
ann_tag.setAttribute("value", value)
1084
1062
def wrapper(cls):
1085
1063
for orig_interface_name, alt_interface_name in (
1086
alt_interface_names.iteritems()):
1064
alt_interface_names.items()):
1088
1066
interface_names = set()
1089
1067
# Go though all attributes of the class
1206
1184
attribute.func_closure)))
1208
1186
# Deprecate all alternate interfaces
1209
iname="_AlternateDBusNames_interface_annotation{0}"
1187
iname="_AlternateDBusNames_interface_annotation{}"
1210
1188
for interface_name in interface_names:
1211
1189
@dbus_interface_annotations(interface_name)
1212
1190
def func(self):
1221
1199
if interface_names:
1222
1200
# Replace the class with a new subclass of it with
1223
1201
# methods, signals, etc. as created above.
1224
cls = type(b"{0}Alternate".format(cls.__name__),
1202
cls = type(b"{}Alternate".format(cls.__name__),
1247
1225
Client.__init__(self, *args, **kwargs)
1248
1226
# Only now, when this client is initialized, can it show up on
1250
client_object_name = unicode(self.name).translate(
1228
client_object_name = str(self.name).translate(
1251
1229
{ord("."): ord("_"),
1252
1230
ord("-"): ord("_")})
1253
1231
self.dbus_object_path = (dbus.ObjectPath
1268
1246
to the D-Bus. Default: no transform
1269
1247
variant_level: D-Bus variant level. Default: 1
1271
attrname = "_{0}".format(dbus_name)
1249
attrname = "_{}".format(dbus_name)
1272
1250
def setter(self, value):
1273
1251
if hasattr(self, "dbus_object_path"):
1274
1252
if (not hasattr(self, attrname) or
1304
1282
approval_delay = notifychangeproperty(dbus.UInt64,
1305
1283
"ApprovalDelay",
1307
timedelta_to_milliseconds)
1285
lambda td: td.total_seconds()
1308
1287
approval_duration = notifychangeproperty(
1309
1288
dbus.UInt64, "ApprovalDuration",
1310
type_func = timedelta_to_milliseconds)
1289
type_func = lambda td: td.total_seconds() * 1000)
1311
1290
host = notifychangeproperty(dbus.String, "Host")
1312
1291
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1314
timedelta_to_milliseconds)
1292
type_func = lambda td:
1293
td.total_seconds() * 1000)
1315
1294
extended_timeout = notifychangeproperty(
1316
1295
dbus.UInt64, "ExtendedTimeout",
1317
type_func = timedelta_to_milliseconds)
1296
type_func = lambda td: td.total_seconds() * 1000)
1318
1297
interval = notifychangeproperty(dbus.UInt64,
1321
timedelta_to_milliseconds)
1300
lambda td: td.total_seconds()
1322
1302
checker_command = notifychangeproperty(dbus.String, "Checker")
1324
1304
del notifychangeproperty
1368
1348
def approve(self, value=True):
1369
1349
self.approved = value
1370
gobject.timeout_add(timedelta_to_milliseconds
1371
(self.approval_duration),
1372
self._reset_approved)
1350
gobject.timeout_add(int(self.approval_duration.total_seconds()
1351
* 1000), self._reset_approved)
1373
1352
self.send_changedstate()
1375
1354
## D-Bus methods, signals & properties
1478
1457
access="readwrite")
1479
1458
def ApprovalDelay_dbus_property(self, value=None):
1480
1459
if value is None: # get
1481
return dbus.UInt64(self.approval_delay_milliseconds())
1460
return dbus.UInt64(self.approval_delay.total_seconds()
1482
1462
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1484
1464
# ApprovalDuration - property
1486
1466
access="readwrite")
1487
1467
def ApprovalDuration_dbus_property(self, value=None):
1488
1468
if value is None: # get
1489
return dbus.UInt64(timedelta_to_milliseconds(
1490
self.approval_duration))
1469
return dbus.UInt64(self.approval_duration.total_seconds()
1491
1471
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1493
1473
# Name - property
1506
1486
def Host_dbus_property(self, value=None):
1507
1487
if value is None: # get
1508
1488
return dbus.String(self.host)
1509
self.host = unicode(value)
1489
self.host = str(value)
1511
1491
# Created - property
1512
1492
@dbus_service_property(_interface, signature="s", access="read")
1559
1539
access="readwrite")
1560
1540
def Timeout_dbus_property(self, value=None):
1561
1541
if value is None: # get
1562
return dbus.UInt64(self.timeout_milliseconds())
1542
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1563
1543
old_timeout = self.timeout
1564
1544
self.timeout = datetime.timedelta(0, 0, 0, value)
1565
1545
# Reschedule disabling
1576
1556
gobject.source_remove(self.disable_initiator_tag)
1577
1557
self.disable_initiator_tag = (
1578
1558
gobject.timeout_add(
1579
timedelta_to_milliseconds(self.expires - now),
1559
int((self.expires - now).total_seconds()
1560
* 1000), self.disable))
1582
1562
# ExtendedTimeout - property
1583
1563
@dbus_service_property(_interface, signature="t",
1584
1564
access="readwrite")
1585
1565
def ExtendedTimeout_dbus_property(self, value=None):
1586
1566
if value is None: # get
1587
return dbus.UInt64(self.extended_timeout_milliseconds())
1567
return dbus.UInt64(self.extended_timeout.total_seconds()
1588
1569
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1590
1571
# Interval - property
1592
1573
access="readwrite")
1593
1574
def Interval_dbus_property(self, value=None):
1594
1575
if value is None: # get
1595
return dbus.UInt64(self.interval_milliseconds())
1576
return dbus.UInt64(self.interval.total_seconds() * 1000)
1596
1577
self.interval = datetime.timedelta(0, 0, 0, value)
1597
1578
if getattr(self, "checker_initiator_tag", None) is None:
1609
1590
def Checker_dbus_property(self, value=None):
1610
1591
if value is None: # get
1611
1592
return dbus.String(self.checker_command)
1612
self.checker_command = unicode(value)
1593
self.checker_command = str(value)
1614
1595
# CheckerRunning - property
1615
1596
@dbus_service_property(_interface, signature="b",
1631
1612
@dbus_service_property(_interface, signature="ay",
1632
1613
access="write", byte_arrays=True)
1633
1614
def Secret_dbus_property(self, value):
1634
self.secret = str(value)
1615
self.secret = bytes(value)
1671
1652
def handle(self):
1672
1653
with contextlib.closing(self.server.child_pipe) as child_pipe:
1673
1654
logger.info("TCP connection from: %s",
1674
unicode(self.client_address))
1655
str(self.client_address))
1675
1656
logger.debug("Pipe FD: %d",
1676
1657
self.server.child_pipe.fileno())
1758
1739
if self.server.use_dbus:
1759
1740
# Emit D-Bus signal
1760
1741
client.NeedApproval(
1761
client.approval_delay_milliseconds(),
1762
client.approved_by_default)
1742
client.approval_delay.total_seconds()
1743
* 1000, client.approved_by_default)
1764
1745
logger.warning("Client %s was not approved",
1771
1752
#wait until timeout or approved
1772
1753
time = datetime.datetime.now()
1773
1754
client.changedstate.acquire()
1774
client.changedstate.wait(
1775
float(timedelta_to_milliseconds(delay)
1755
client.changedstate.wait(delay.total_seconds())
1777
1756
client.changedstate.release()
1778
1757
time2 = datetime.datetime.now()
1779
1758
if (time2 - time) >= delay:
1979
1958
self.socket.setsockopt(socket.SOL_SOCKET,
1980
1959
SO_BINDTODEVICE,
1981
str(self.interface + '\0'))
1960
(self.interface + "\0")
1982
1962
except socket.error as error:
1983
1963
if error.errno == errno.EPERM:
1984
1964
logger.error("No permission to bind to"
2187
2167
token_duration = Token(re.compile(r"P"), None,
2188
2168
frozenset((token_year, token_month,
2189
2169
token_day, token_time,
2191
2171
# Define starting values
2192
2172
value = datetime.timedelta() # Value so far
2193
2173
found_token = None
2194
followers = frozenset(token_duration,) # Following valid tokens
2174
followers = frozenset((token_duration,)) # Following valid tokens
2195
2175
s = duration # String left to parse
2196
2176
# Loop until end token is found
2197
2177
while found_token is not token_end:
2257
2237
elif suffix == "w":
2258
2238
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2260
raise ValueError("Unknown suffix {0!r}"
2240
raise ValueError("Unknown suffix {!r}"
2261
2241
.format(suffix))
2262
2242
except IndexError as e:
2263
2243
raise ValueError(*(e.args))
2280
2260
# Close all standard open file descriptors
2281
2261
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2282
2262
if not stat.S_ISCHR(os.fstat(null).st_mode):
2283
raise OSError(errno.ENODEV,
2284
"{0} not a character device"
2263
raise OSError(errno.ENODEV, "{} not a character device"
2285
2264
.format(os.devnull))
2286
2265
os.dup2(null, sys.stdin.fileno())
2287
2266
os.dup2(null, sys.stdout.fileno())
2298
2277
parser = argparse.ArgumentParser()
2299
2278
parser.add_argument("-v", "--version", action="version",
2300
version = "%(prog)s {0}".format(version),
2279
version = "%(prog)s {}".format(version),
2301
2280
help="show version number and exit")
2302
2281
parser.add_argument("-i", "--interface", metavar="IF",
2303
2282
help="Bind to interface IF")
2336
2315
help="Directory to save/restore state in")
2337
2316
parser.add_argument("--foreground", action="store_true",
2338
2317
help="Run in foreground", default=None)
2318
parser.add_argument("--no-zeroconf", action="store_false",
2319
dest="zeroconf", help="Do not use Zeroconf",
2340
2322
options = parser.parse_args()
2391
2374
for option in ("interface", "address", "port", "debug",
2392
2375
"priority", "servicename", "configdir",
2393
2376
"use_dbus", "use_ipv6", "debuglevel", "restore",
2394
"statedir", "socket", "foreground"):
2377
"statedir", "socket", "foreground", "zeroconf"):
2395
2378
value = getattr(options, option)
2396
2379
if value is not None:
2397
2380
server_settings[option] = value
2399
2382
# Force all strings to be unicode
2400
2383
for option in server_settings.keys():
2401
if type(server_settings[option]) is str:
2402
server_settings[option] = unicode(server_settings[option])
2384
if isinstance(server_settings[option], bytes):
2385
server_settings[option] = (server_settings[option]
2403
2387
# Force all boolean options to be boolean
2404
2388
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2389
"foreground", "zeroconf"):
2406
2390
server_settings[option] = bool(server_settings[option])
2407
2391
# Debug implies foreground
2408
2392
if server_settings["debug"]:
2412
2396
##################################################################
2398
if (not server_settings["zeroconf"] and
2399
not (server_settings["port"]
2400
or server_settings["socket"] != "")):
2401
parser.error("Needs port or socket to work without"
2414
2404
# For convenience
2415
2405
debug = server_settings["debug"]
2416
2406
debuglevel = server_settings["debuglevel"]
2419
2409
stored_state_path = os.path.join(server_settings["statedir"],
2420
2410
stored_state_file)
2421
2411
foreground = server_settings["foreground"]
2412
zeroconf = server_settings["zeroconf"]
2424
2415
initlogger(debug, logging.DEBUG)
2432
2423
if server_settings["servicename"] != "Mandos":
2433
2424
syslogger.setFormatter(logging.Formatter
2434
('Mandos ({0}) [%(process)d]:'
2425
('Mandos ({}) [%(process)d]:'
2435
2426
' %(levelname)s: %(message)s'
2436
2427
.format(server_settings
2437
2428
["servicename"])))
2445
2436
global mandos_dbus_service
2446
2437
mandos_dbus_service = None
2440
if server_settings["socket"] != "":
2441
socketfd = server_settings["socket"]
2448
2442
tcp_server = MandosServer((server_settings["address"],
2449
2443
server_settings["port"]),
2454
2448
gnutls_priority=
2455
2449
server_settings["priority"],
2456
2450
use_dbus=use_dbus,
2457
socketfd=(server_settings["socket"]
2459
2452
if not foreground:
2460
2453
pidfilename = "/run/mandos.pid"
2461
2454
if not os.path.isdir("/run/."):
2531
2524
use_dbus = False
2532
2525
server_settings["use_dbus"] = False
2533
2526
tcp_server.use_dbus = False
2534
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2535
service = AvahiServiceToSyslog(name =
2536
server_settings["servicename"],
2537
servicetype = "_mandos._tcp",
2538
protocol = protocol, bus = bus)
2539
if server_settings["interface"]:
2540
service.interface = (if_nametoindex
2541
(str(server_settings["interface"])))
2528
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2529
service = AvahiServiceToSyslog(name =
2530
server_settings["servicename"],
2531
servicetype = "_mandos._tcp",
2532
protocol = protocol, bus = bus)
2533
if server_settings["interface"]:
2534
service.interface = (if_nametoindex
2535
(server_settings["interface"]
2543
2538
global multiprocessing_manager
2544
2539
multiprocessing_manager = multiprocessing.Manager()
2568
2563
os.remove(stored_state_path)
2569
2564
except IOError as e:
2570
2565
if e.errno == errno.ENOENT:
2571
logger.warning("Could not load persistent state: {0}"
2566
logger.warning("Could not load persistent state: {}"
2572
2567
.format(os.strerror(e.errno)))
2574
2569
logger.critical("Could not load persistent state:",
2610
2605
if datetime.datetime.utcnow() >= client["expires"]:
2611
2606
if not client["last_checked_ok"]:
2612
2607
logger.warning(
2613
"disabling client {0} - Client never "
2608
"disabling client {} - Client never "
2614
2609
"performed a successful checker"
2615
2610
.format(client_name))
2616
2611
client["enabled"] = False
2617
2612
elif client["last_checker_status"] != 0:
2618
2613
logger.warning(
2619
"disabling client {0} - Client "
2620
"last checker failed with error code {1}"
2614
"disabling client {} - Client last"
2615
" checker failed with error code {}"
2621
2616
.format(client_name,
2622
2617
client["last_checker_status"]))
2623
2618
client["enabled"] = False
2636
2631
except PGPError:
2637
2632
# If decryption fails, we use secret from new settings
2638
logger.debug("Failed to decrypt {0} old secret"
2633
logger.debug("Failed to decrypt {} old secret"
2639
2634
.format(client_name))
2640
2635
client["secret"] = (
2641
2636
client_settings[client_name]["secret"])
2649
2644
clients_data[client_name] = client_settings[client_name]
2651
2646
# Create all client objects
2652
for client_name, client in clients_data.iteritems():
2647
for client_name, client in clients_data.items():
2653
2648
tcp_server.clients[client_name] = client_class(
2654
2649
name = client_name, settings = client,
2655
2650
server_settings = server_settings)
2759
2755
# A list of attributes that can not be pickled
2761
exclude = set(("bus", "changedstate", "secret",
2762
"checker", "server_settings"))
2757
exclude = { "bus", "changedstate", "secret",
2758
"checker", "server_settings" }
2763
2759
for name, typ in (inspect.getmembers
2764
2760
(dbus.service.Object)):
2765
2761
exclude.add(name)
2788
2784
except NameError:
2790
2786
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2791
logger.warning("Could not save persistent state: {0}"
2787
logger.warning("Could not save persistent state: {}"
2792
2788
.format(os.strerror(e.errno)))
2794
2790
logger.warning("Could not save persistent state:",
2823
2819
tcp_server.server_activate()
2825
2821
# Find out what port we got
2826
service.port = tcp_server.socket.getsockname()[1]
2823
service.port = tcp_server.socket.getsockname()[1]
2828
2825
logger.info("Now listening on address %r, port %d,"
2829
2826
" flowinfo %d, scope_id %d",
2835
2832
#service.interface = tcp_server.socket.getsockname()[3]
2838
# From the Avahi example code
2841
except dbus.exceptions.DBusException as error:
2842
logger.critical("D-Bus Exception", exc_info=error)
2845
# End of Avahi example code
2836
# From the Avahi example code
2839
except dbus.exceptions.DBusException as error:
2840
logger.critical("D-Bus Exception", exc_info=error)
2843
# End of Avahi example code
2847
2845
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2848
2846
lambda *args, **kwargs: