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