82
88
except ImportError:
83
89
SO_BINDTODEVICE = None
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
96
logger.addHandler(syslogger)
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
102
logger.addHandler(console)
92
stored_state_file = "clients.pickle"
94
logger = logging.getLogger()
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
101
except (OSError, AttributeError):
102
def if_nametoindex(interface):
103
"Get an interface index the hard way, i.e. using fcntl()"
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
with contextlib.closing(socket.socket()) as s:
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
109
interface_index = struct.unpack(str("I"),
111
return interface_index
114
def initlogger(debug, level=logging.WARNING):
115
"""init logger and add loglevel"""
118
syslogger = (logging.handlers.SysLogHandler
120
logging.handlers.SysLogHandler.LOG_DAEMON,
121
address = str("/dev/log")))
122
syslogger.setFormatter(logging.Formatter
123
('Mandos [%(process)d]: %(levelname)s:'
125
logger.addHandler(syslogger)
128
console = logging.StreamHandler()
129
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
133
logger.addHandler(console)
134
logger.setLevel(level)
137
class PGPError(Exception):
138
"""Exception if encryption/decryption fails"""
142
class PGPEngine(object):
143
"""A simple class for OpenPGP symmetric encryption & decryption"""
145
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
146
self.gnupgargs = ['--batch',
147
'--home', self.tempdir,
155
def __exit__(self, exc_type, exc_value, traceback):
163
if self.tempdir is not None:
164
# Delete contents of tempdir
165
for root, dirs, files in os.walk(self.tempdir,
167
for filename in files:
168
os.remove(os.path.join(root, filename))
170
os.rmdir(os.path.join(root, dirname))
172
os.rmdir(self.tempdir)
175
def password_encode(self, password):
176
# Passphrase can not be empty and can not contain newlines or
177
# NUL bytes. So we prefix it and hex encode it.
178
encoded = b"mandos" + binascii.hexlify(password)
179
if len(encoded) > 2048:
180
# GnuPG can't handle long passwords, so encode differently
181
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
182
.replace(b"\n", b"\\n")
183
.replace(b"\0", b"\\x00"))
186
def encrypt(self, data, password):
187
passphrase = self.password_encode(password)
188
with tempfile.NamedTemporaryFile(dir=self.tempdir
190
passfile.write(passphrase)
192
proc = subprocess.Popen(['gpg', '--symmetric',
196
stdin = subprocess.PIPE,
197
stdout = subprocess.PIPE,
198
stderr = subprocess.PIPE)
199
ciphertext, err = proc.communicate(input = data)
200
if proc.returncode != 0:
204
def decrypt(self, data, password):
205
passphrase = self.password_encode(password)
206
with tempfile.NamedTemporaryFile(dir = self.tempdir
208
passfile.write(passphrase)
210
proc = subprocess.Popen(['gpg', '--decrypt',
214
stdin = subprocess.PIPE,
215
stdout = subprocess.PIPE,
216
stderr = subprocess.PIPE)
217
decrypted_plaintext, err = proc.communicate(input
219
if proc.returncode != 0:
221
return decrypted_plaintext
104
224
class AvahiError(Exception):
105
225
def __init__(self, value, *args, **kwargs):
298
429
interval: datetime.timedelta(); How often to start a new checker
299
430
last_approval_request: datetime.datetime(); (UTC) or None
300
431
last_checked_ok: datetime.datetime(); (UTC) or None
301
last_enabled: datetime.datetime(); (UTC)
432
last_checker_status: integer between 0 and 255 reflecting exit
433
status of last checker. -1 reflects crashed
434
checker, -2 means no checker completed yet.
435
last_enabled: datetime.datetime(); (UTC) or None
302
436
name: string; from the config file, used in log messages and
303
437
D-Bus identifiers
304
438
secret: bytestring; sent verbatim (over TLS) to client
305
439
timeout: datetime.timedelta(); How long from last_checked_ok
306
440
until this client is disabled
307
extended_timeout: extra long timeout when password has been sent
441
extended_timeout: extra long timeout when secret has been sent
308
442
runtime_expansions: Allowed attributes for runtime expansion.
309
443
expires: datetime.datetime(); time (UTC) when a client will be
310
444
disabled, or None
445
server_settings: The server_settings dict from main()
313
448
runtime_expansions = ("approval_delay", "approval_duration",
314
"created", "enabled", "fingerprint",
315
"host", "interval", "last_checked_ok",
449
"created", "enabled", "expires",
450
"fingerprint", "host", "interval",
451
"last_approval_request", "last_checked_ok",
316
452
"last_enabled", "name", "timeout")
318
def timeout_milliseconds(self):
319
"Return the 'timeout' attribute in milliseconds"
320
return _timedelta_to_milliseconds(self.timeout)
322
def extended_timeout_milliseconds(self):
323
"Return the 'extended_timeout' attribute in milliseconds"
324
return _timedelta_to_milliseconds(self.extended_timeout)
326
def interval_milliseconds(self):
327
"Return the 'interval' attribute in milliseconds"
328
return _timedelta_to_milliseconds(self.interval)
330
def approval_delay_milliseconds(self):
331
return _timedelta_to_milliseconds(self.approval_delay)
333
def __init__(self, name = None, disable_hook=None, config=None):
334
"""Note: the 'checker' key in 'config' sets the
335
'checker_command' attribute and *not* the 'checker'
453
client_defaults = { "timeout": "PT5M",
454
"extended_timeout": "PT15M",
456
"checker": "fping -q -- %%(host)s",
458
"approval_delay": "PT0S",
459
"approval_duration": "PT1S",
460
"approved_by_default": "True",
465
def config_parser(config):
466
"""Construct a new dict of client settings of this form:
467
{ client_name: {setting_name: value, ...}, ...}
468
with exceptions for any special settings as defined above.
469
NOTE: Must be a pure function. Must return the same result
470
value given the same arguments.
473
for client_name in config.sections():
474
section = dict(config.items(client_name))
475
client = settings[client_name] = {}
477
client["host"] = section["host"]
478
# Reformat values from string types to Python types
479
client["approved_by_default"] = config.getboolean(
480
client_name, "approved_by_default")
481
client["enabled"] = config.getboolean(client_name,
484
client["fingerprint"] = (section["fingerprint"].upper()
486
if "secret" in section:
487
client["secret"] = section["secret"].decode("base64")
488
elif "secfile" in section:
489
with open(os.path.expanduser(os.path.expandvars
490
(section["secfile"])),
492
client["secret"] = secfile.read()
494
raise TypeError("No secret or secfile for section {}"
496
client["timeout"] = string_to_delta(section["timeout"])
497
client["extended_timeout"] = string_to_delta(
498
section["extended_timeout"])
499
client["interval"] = string_to_delta(section["interval"])
500
client["approval_delay"] = string_to_delta(
501
section["approval_delay"])
502
client["approval_duration"] = string_to_delta(
503
section["approval_duration"])
504
client["checker_command"] = section["checker"]
505
client["last_approval_request"] = None
506
client["last_checked_ok"] = None
507
client["last_checker_status"] = -2
511
def __init__(self, settings, name = None, server_settings=None):
513
if server_settings is None:
515
self.server_settings = server_settings
516
# adding all client settings
517
for setting, value in settings.items():
518
setattr(self, setting, value)
521
if not hasattr(self, "last_enabled"):
522
self.last_enabled = datetime.datetime.utcnow()
523
if not hasattr(self, "expires"):
524
self.expires = (datetime.datetime.utcnow()
527
self.last_enabled = None
340
530
logger.debug("Creating client %r", self.name)
341
531
# Uppercase and remove spaces from fingerprint for later
342
532
# comparison purposes with return value from the fingerprint()
344
self.fingerprint = (config["fingerprint"].upper()
346
534
logger.debug(" Fingerprint: %s", self.fingerprint)
347
if "secret" in config:
348
self.secret = config["secret"].decode("base64")
349
elif "secfile" in config:
350
with open(os.path.expanduser(os.path.expandvars
351
(config["secfile"])),
353
self.secret = secfile.read()
355
raise TypeError("No secret or secfile for client %s"
357
self.host = config.get("host", "")
358
self.created = datetime.datetime.utcnow()
360
self.last_approval_request = None
361
self.last_enabled = None
362
self.last_checked_ok = None
363
self.timeout = string_to_delta(config["timeout"])
364
self.extended_timeout = string_to_delta(config["extended_timeout"])
365
self.interval = string_to_delta(config["interval"])
366
self.disable_hook = disable_hook
535
self.created = settings.get("created",
536
datetime.datetime.utcnow())
538
# attributes specific for this server instance
367
539
self.checker = None
368
540
self.checker_initiator_tag = None
369
541
self.disable_initiator_tag = None
371
542
self.checker_callback_tag = None
372
self.checker_command = config["checker"]
373
543
self.current_checker_command = None
374
self.last_connect = None
375
self._approved = None
376
self.approved_by_default = config.get("approved_by_default",
378
545
self.approvals_pending = 0
379
self.approval_delay = string_to_delta(
380
config["approval_delay"])
381
self.approval_duration = string_to_delta(
382
config["approval_duration"])
383
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
546
self.changedstate = (multiprocessing_manager
547
.Condition(multiprocessing_manager
549
self.client_structure = [attr for attr in
550
self.__dict__.iterkeys()
551
if not attr.startswith("_")]
552
self.client_structure.append("client_structure")
554
for name, t in inspect.getmembers(type(self),
558
if not name.startswith("_"):
559
self.client_structure.append(name)
561
# Send notice to process children that client state has changed
385
562
def send_changedstate(self):
386
self.changedstate.acquire()
387
self.changedstate.notify_all()
388
self.changedstate.release()
563
with self.changedstate:
564
self.changedstate.notify_all()
390
566
def enable(self):
391
567
"""Start this client's checker and timeout hooks"""
392
568
if getattr(self, "enabled", False):
393
569
# Already enabled
395
self.send_changedstate()
396
# Schedule a new checker to be started an 'interval' from now,
397
# and every interval from then on.
398
self.checker_initiator_tag = (gobject.timeout_add
399
(self.interval_milliseconds(),
401
# Schedule a disable() when 'timeout' has passed
402
571
self.expires = datetime.datetime.utcnow() + self.timeout
403
self.disable_initiator_tag = (gobject.timeout_add
404
(self.timeout_milliseconds(),
406
572
self.enabled = True
407
573
self.last_enabled = datetime.datetime.utcnow()
408
# Also start a new checker *right now*.
575
self.send_changedstate()
411
577
def disable(self, quiet=True):
412
578
"""Disable this client."""
413
579
if not getattr(self, "enabled", False):
416
self.send_changedstate()
418
582
logger.info("Disabling client %s", self.name)
419
if getattr(self, "disable_initiator_tag", False):
583
if getattr(self, "disable_initiator_tag", None) is not None:
420
584
gobject.source_remove(self.disable_initiator_tag)
421
585
self.disable_initiator_tag = None
422
586
self.expires = None
423
if getattr(self, "checker_initiator_tag", False):
587
if getattr(self, "checker_initiator_tag", None) is not None:
424
588
gobject.source_remove(self.checker_initiator_tag)
425
589
self.checker_initiator_tag = None
426
590
self.stop_checker()
427
if self.disable_hook:
428
self.disable_hook(self)
429
591
self.enabled = False
593
self.send_changedstate()
430
594
# Do not run this again if called by a gobject.timeout_add
433
597
def __del__(self):
434
self.disable_hook = None
600
def init_checker(self):
601
# Schedule a new checker to be started an 'interval' from now,
602
# and every interval from then on.
603
if self.checker_initiator_tag is not None:
604
gobject.source_remove(self.checker_initiator_tag)
605
self.checker_initiator_tag = (gobject.timeout_add
607
.total_seconds() * 1000),
609
# Schedule a disable() when 'timeout' has passed
610
if self.disable_initiator_tag is not None:
611
gobject.source_remove(self.disable_initiator_tag)
612
self.disable_initiator_tag = (gobject.timeout_add
614
.total_seconds() * 1000),
616
# Also start a new checker *right now*.
437
619
def checker_callback(self, pid, condition, command):
438
620
"""The checker has completed, so take appropriate actions."""
439
621
self.checker_callback_tag = None
440
622
self.checker = None
441
623
if os.WIFEXITED(condition):
442
exitstatus = os.WEXITSTATUS(condition)
624
self.last_checker_status = os.WEXITSTATUS(condition)
625
if self.last_checker_status == 0:
444
626
logger.info("Checker for %(name)s succeeded",
446
628
self.checked_ok()
743
1027
except (AttributeError, xml.dom.DOMException,
744
1028
xml.parsers.expat.ExpatError) as error:
745
1029
logger.error("Failed to override Introspection method",
747
1031
return xmlstring
750
def datetime_to_dbus (dt, variant_level=0):
1034
def datetime_to_dbus(dt, variant_level=0):
751
1035
"""Convert a UTC datetime.datetime() to a D-Bus type."""
753
1037
return dbus.String("", variant_level = variant_level)
754
1038
return dbus.String(dt.isoformat(),
755
1039
variant_level=variant_level)
757
class AlternateDBusNamesMetaclass(DBusObjectWithProperties.__metaclass__):
758
"""Applied to an empty subclass of a D-Bus object, this metaclass
759
will add additional D-Bus attributes matching a certain pattern.
1042
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1043
"""A class decorator; applied to a subclass of
1044
dbus.service.Object, it will add alternate D-Bus attributes with
1045
interface names according to the "alt_interface_names" mapping.
1048
@alternate_dbus_interfaces({"org.example.Interface":
1049
"net.example.AlternateInterface"})
1050
class SampleDBusObject(dbus.service.Object):
1051
@dbus.service.method("org.example.Interface")
1052
def SampleDBusMethod():
1055
The above "SampleDBusMethod" on "SampleDBusObject" will be
1056
reachable via two interfaces: "org.example.Interface" and
1057
"net.example.AlternateInterface", the latter of which will have
1058
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1059
"true", unless "deprecate" is passed with a False value.
1061
This works for methods and signals, and also for D-Bus properties
1062
(from DBusObjectWithProperties) and interfaces (from the
1063
dbus_interface_annotations decorator).
761
def __new__(mcs, name, bases, attr):
762
# Go through all the base classes which could have D-Bus
763
# methods, signals, or properties in them
764
for base in (b for b in bases
765
if issubclass(b, dbus.service.Object)):
766
# Go though all attributes of the base class
767
for attrname, attribute in inspect.getmembers(base):
1066
for orig_interface_name, alt_interface_name in (
1067
alt_interface_names.items()):
1069
interface_names = set()
1070
# Go though all attributes of the class
1071
for attrname, attribute in inspect.getmembers(cls):
768
1072
# Ignore non-D-Bus attributes, and D-Bus attributes
769
1073
# with the wrong interface name
770
1074
if (not hasattr(attribute, "_dbus_interface")
771
1075
or not attribute._dbus_interface
772
.startswith("se.recompile.Mandos")):
1076
.startswith(orig_interface_name)):
774
1078
# Create an alternate D-Bus interface name based on
775
1079
# the current name
776
1080
alt_interface = (attribute._dbus_interface
777
.replace("se.recompile.Mandos",
778
"se.bsnet.fukt.Mandos"))
1081
.replace(orig_interface_name,
1082
alt_interface_name))
1083
interface_names.add(alt_interface)
779
1084
# Is this a D-Bus signal?
780
1085
if getattr(attribute, "_dbus_is_signal", False):
781
# Extract the original non-method function by
1086
# Extract the original non-method undecorated
1087
# function by black magic
783
1088
nonmethod_func = (dict(
784
1089
zip(attribute.func_code.co_freevars,
785
1090
attribute.__closure__))["func"]
912
1272
last_enabled = notifychangeproperty(datetime_to_dbus,
914
1274
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
915
type_func = lambda checker: checker is not None)
1275
type_func = lambda checker:
1276
checker is not None)
916
1277
last_checked_ok = notifychangeproperty(datetime_to_dbus,
917
1278
"LastCheckedOK")
918
last_approval_request = notifychangeproperty(datetime_to_dbus,
919
"LastApprovalRequest")
1279
last_checker_status = notifychangeproperty(dbus.Int16,
1280
"LastCheckerStatus")
1281
last_approval_request = notifychangeproperty(
1282
datetime_to_dbus, "LastApprovalRequest")
920
1283
approved_by_default = notifychangeproperty(dbus.Boolean,
921
1284
"ApprovedByDefault")
922
approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
923
type_func = _timedelta_to_milliseconds)
924
approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
925
type_func = _timedelta_to_milliseconds)
1285
approval_delay = notifychangeproperty(dbus.UInt64,
1288
lambda td: td.total_seconds()
1290
approval_duration = notifychangeproperty(
1291
dbus.UInt64, "ApprovalDuration",
1292
type_func = lambda td: td.total_seconds() * 1000)
926
1293
host = notifychangeproperty(dbus.String, "Host")
927
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
928
type_func = _timedelta_to_milliseconds)
929
extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
930
type_func = _timedelta_to_milliseconds)
931
interval = notifychangeproperty(dbus.UInt16, "Interval",
932
type_func = _timedelta_to_milliseconds)
1294
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1295
type_func = lambda td:
1296
td.total_seconds() * 1000)
1297
extended_timeout = notifychangeproperty(
1298
dbus.UInt64, "ExtendedTimeout",
1299
type_func = lambda td: td.total_seconds() * 1000)
1300
interval = notifychangeproperty(dbus.UInt64,
1303
lambda td: td.total_seconds()
933
1305
checker_command = notifychangeproperty(dbus.String, "Checker")
935
1307
del notifychangeproperty
1597
2008
def __init__(self, server_address, RequestHandlerClass,
1598
2009
interface=None, use_ipv6=True, clients=None,
1599
gnutls_priority=None, use_dbus=True):
2010
gnutls_priority=None, use_dbus=True, socketfd=None):
1600
2011
self.enabled = False
1601
2012
self.clients = clients
1602
2013
if self.clients is None:
1603
self.clients = set()
1604
2015
self.use_dbus = use_dbus
1605
2016
self.gnutls_priority = gnutls_priority
1606
2017
IPv6_TCPServer.__init__(self, server_address,
1607
2018
RequestHandlerClass,
1608
2019
interface = interface,
1609
use_ipv6 = use_ipv6)
2020
use_ipv6 = use_ipv6,
2021
socketfd = socketfd)
1610
2022
def server_activate(self):
1611
2023
if self.enabled:
1612
2024
return socketserver.TCPServer.server_activate(self)
1613
2026
def enable(self):
1614
2027
self.enabled = True
1615
def add_pipe(self, parent_pipe):
2029
def add_pipe(self, parent_pipe, proc):
1616
2030
# Call "handle_ipc" for both data and EOF events
1617
2031
gobject.io_add_watch(parent_pipe.fileno(),
1618
2032
gobject.IO_IN | gobject.IO_HUP,
1619
2033
functools.partial(self.handle_ipc,
1620
parent_pipe = parent_pipe))
1622
2038
def handle_ipc(self, source, condition, parent_pipe=None,
1623
client_object=None):
1625
gobject.IO_IN: "IN", # There is data to read.
1626
gobject.IO_OUT: "OUT", # Data can be written (without
1628
gobject.IO_PRI: "PRI", # There is urgent data to read.
1629
gobject.IO_ERR: "ERR", # Error condition.
1630
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1631
# broken, usually for pipes and
1634
conditions_string = ' | '.join(name
1636
condition_names.iteritems()
1637
if cond & condition)
1638
# error or the other end of multiprocessing.Pipe has closed
1639
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2039
proc = None, client_object=None):
2040
# error, or the other end of multiprocessing.Pipe has closed
2041
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2042
# Wait for other process to exit
1642
2046
# Read a request from the child
2105
def rfc3339_duration_to_delta(duration):
2106
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2108
>>> rfc3339_duration_to_delta("P7D")
2109
datetime.timedelta(7)
2110
>>> rfc3339_duration_to_delta("PT60S")
2111
datetime.timedelta(0, 60)
2112
>>> rfc3339_duration_to_delta("PT60M")
2113
datetime.timedelta(0, 3600)
2114
>>> rfc3339_duration_to_delta("PT24H")
2115
datetime.timedelta(1)
2116
>>> rfc3339_duration_to_delta("P1W")
2117
datetime.timedelta(7)
2118
>>> rfc3339_duration_to_delta("PT5M30S")
2119
datetime.timedelta(0, 330)
2120
>>> rfc3339_duration_to_delta("P1DT3M20S")
2121
datetime.timedelta(1, 200)
2124
# Parsing an RFC 3339 duration with regular expressions is not
2125
# possible - there would have to be multiple places for the same
2126
# values, like seconds. The current code, while more esoteric, is
2127
# cleaner without depending on a parsing library. If Python had a
2128
# built-in library for parsing we would use it, but we'd like to
2129
# avoid excessive use of external libraries.
2131
# New type for defining tokens, syntax, and semantics all-in-one
2132
Token = collections.namedtuple("Token",
2133
("regexp", # To match token; if
2134
# "value" is not None,
2135
# must have a "group"
2137
"value", # datetime.timedelta or
2139
"followers")) # Tokens valid after
2141
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2142
# the "duration" ABNF definition in RFC 3339, Appendix A.
2143
token_end = Token(re.compile(r"$"), None, frozenset())
2144
token_second = Token(re.compile(r"(\d+)S"),
2145
datetime.timedelta(seconds=1),
2146
frozenset((token_end,)))
2147
token_minute = Token(re.compile(r"(\d+)M"),
2148
datetime.timedelta(minutes=1),
2149
frozenset((token_second, token_end)))
2150
token_hour = Token(re.compile(r"(\d+)H"),
2151
datetime.timedelta(hours=1),
2152
frozenset((token_minute, token_end)))
2153
token_time = Token(re.compile(r"T"),
2155
frozenset((token_hour, token_minute,
2157
token_day = Token(re.compile(r"(\d+)D"),
2158
datetime.timedelta(days=1),
2159
frozenset((token_time, token_end)))
2160
token_month = Token(re.compile(r"(\d+)M"),
2161
datetime.timedelta(weeks=4),
2162
frozenset((token_day, token_end)))
2163
token_year = Token(re.compile(r"(\d+)Y"),
2164
datetime.timedelta(weeks=52),
2165
frozenset((token_month, token_end)))
2166
token_week = Token(re.compile(r"(\d+)W"),
2167
datetime.timedelta(weeks=1),
2168
frozenset((token_end,)))
2169
token_duration = Token(re.compile(r"P"), None,
2170
frozenset((token_year, token_month,
2171
token_day, token_time,
2173
# Define starting values
2174
value = datetime.timedelta() # Value so far
2176
followers = frozenset((token_duration,)) # Following valid tokens
2177
s = duration # String left to parse
2178
# Loop until end token is found
2179
while found_token is not token_end:
2180
# Search for any currently valid tokens
2181
for token in followers:
2182
match = token.regexp.match(s)
2183
if match is not None:
2185
if token.value is not None:
2186
# Value found, parse digits
2187
factor = int(match.group(1), 10)
2188
# Add to value so far
2189
value += factor * token.value
2190
# Strip token from string
2191
s = token.regexp.sub("", s, 1)
2194
# Set valid next tokens
2195
followers = found_token.followers
2198
# No currently valid tokens were found
2199
raise ValueError("Invalid RFC 3339 duration")
1693
2204
def string_to_delta(interval):
1694
2205
"""Parse a string and return a datetime.timedelta
1862
2385
for option in server_settings.keys():
1863
2386
if type(server_settings[option]) is str:
1864
2387
server_settings[option] = unicode(server_settings[option])
2388
# Force all boolean options to be boolean
2389
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2390
"foreground", "zeroconf"):
2391
server_settings[option] = bool(server_settings[option])
2392
# Debug implies foreground
2393
if server_settings["debug"]:
2394
server_settings["foreground"] = True
1865
2395
# Now we have our good server settings in "server_settings"
1867
2397
##################################################################
2399
if (not server_settings["zeroconf"] and
2400
not (server_settings["port"]
2401
or server_settings["socket"] != "")):
2402
parser.error("Needs port or socket to work without"
1869
2405
# For convenience
1870
2406
debug = server_settings["debug"]
1871
2407
debuglevel = server_settings["debuglevel"]
1872
2408
use_dbus = server_settings["use_dbus"]
1873
2409
use_ipv6 = server_settings["use_ipv6"]
2410
stored_state_path = os.path.join(server_settings["statedir"],
2412
foreground = server_settings["foreground"]
2413
zeroconf = server_settings["zeroconf"]
2416
initlogger(debug, logging.DEBUG)
2421
level = getattr(logging, debuglevel.upper())
2422
initlogger(debug, level)
1875
2424
if server_settings["servicename"] != "Mandos":
1876
2425
syslogger.setFormatter(logging.Formatter
1877
('Mandos (%s) [%%(process)d]:'
1878
' %%(levelname)s: %%(message)s'
1879
% server_settings["servicename"]))
2426
('Mandos ({}) [%(process)d]:'
2427
' %(levelname)s: %(message)s'
2428
.format(server_settings
1881
2431
# Parse config file with clients
1882
client_defaults = { "timeout": "5m",
1883
"extended_timeout": "15m",
1885
"checker": "fping -q -- %%(host)s",
1887
"approval_delay": "0s",
1888
"approval_duration": "1s",
1890
client_config = configparser.SafeConfigParser(client_defaults)
2432
client_config = configparser.SafeConfigParser(Client
1891
2434
client_config.read(os.path.join(server_settings["configdir"],
1892
2435
"clients.conf"))
1894
2437
global mandos_dbus_service
1895
2438
mandos_dbus_service = None
2441
if server_settings["socket"] != "":
2442
socketfd = server_settings["socket"]
1897
2443
tcp_server = MandosServer((server_settings["address"],
1898
2444
server_settings["port"]),
1978
2518
bus_name = dbus.service.BusName("se.recompile.Mandos",
1979
2519
bus, do_not_queue=True)
1980
old_bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1981
bus, do_not_queue=True)
2520
old_bus_name = (dbus.service.BusName
2521
("se.bsnet.fukt.Mandos", bus,
1982
2523
except dbus.exceptions.NameExistsException as e:
1983
logger.error(unicode(e) + ", disabling D-Bus")
2524
logger.error("Disabling D-Bus:", exc_info=e)
1984
2525
use_dbus = False
1985
2526
server_settings["use_dbus"] = False
1986
2527
tcp_server.use_dbus = False
1987
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1988
service = AvahiService(name = server_settings["servicename"],
1989
servicetype = "_mandos._tcp",
1990
protocol = protocol, bus = bus)
1991
if server_settings["interface"]:
1992
service.interface = (if_nametoindex
1993
(str(server_settings["interface"])))
2529
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2530
service = AvahiServiceToSyslog(name =
2531
server_settings["servicename"],
2532
servicetype = "_mandos._tcp",
2533
protocol = protocol, bus = bus)
2534
if server_settings["interface"]:
2535
service.interface = (if_nametoindex
2536
(str(server_settings["interface"])))
1995
2538
global multiprocessing_manager
1996
2539
multiprocessing_manager = multiprocessing.Manager()
1998
2541
client_class = Client
2000
client_class = functools.partial(ClientDBusTransitional, bus = bus)
2001
def client_config_items(config, section):
2002
special_settings = {
2003
"approved_by_default":
2004
lambda: config.getboolean(section,
2005
"approved_by_default"),
2007
for name, value in config.items(section):
2543
client_class = functools.partial(ClientDBus, bus = bus)
2545
client_settings = Client.config_parser(client_config)
2546
old_client_settings = {}
2549
# This is used to redirect stdout and stderr for checker processes
2551
wnull = open(os.devnull, "w") # A writable /dev/null
2552
# Only used if server is running in foreground but not in debug
2554
if debug or not foreground:
2557
# Get client data and settings from last running state.
2558
if server_settings["restore"]:
2560
with open(stored_state_path, "rb") as stored_state:
2561
clients_data, old_client_settings = (pickle.load
2563
os.remove(stored_state_path)
2564
except IOError as e:
2565
if e.errno == errno.ENOENT:
2566
logger.warning("Could not load persistent state: {}"
2567
.format(os.strerror(e.errno)))
2569
logger.critical("Could not load persistent state:",
2572
except EOFError as e:
2573
logger.warning("Could not load persistent state: "
2574
"EOFError:", exc_info=e)
2576
with PGPEngine() as pgp:
2577
for client_name, client in clients_data.items():
2578
# Skip removed clients
2579
if client_name not in client_settings:
2582
# Decide which value to use after restoring saved state.
2583
# We have three different values: Old config file,
2584
# new config file, and saved state.
2585
# New config value takes precedence if it differs from old
2586
# config value, otherwise use saved state.
2587
for name, value in client_settings[client_name].items():
2589
# For each value in new config, check if it
2590
# differs from the old config value (Except for
2591
# the "secret" attribute)
2592
if (name != "secret" and
2593
value != old_client_settings[client_name]
2595
client[name] = value
2599
# Clients who has passed its expire date can still be
2600
# enabled if its last checker was successful. Clients
2601
# whose checker succeeded before we stored its state is
2602
# assumed to have successfully run all checkers during
2604
if client["enabled"]:
2605
if datetime.datetime.utcnow() >= client["expires"]:
2606
if not client["last_checked_ok"]:
2608
"disabling client {} - Client never "
2609
"performed a successful checker"
2610
.format(client_name))
2611
client["enabled"] = False
2612
elif client["last_checker_status"] != 0:
2614
"disabling client {} - Client last"
2615
" checker failed with error code {}"
2616
.format(client_name,
2617
client["last_checker_status"]))
2618
client["enabled"] = False
2620
client["expires"] = (datetime.datetime
2622
+ client["timeout"])
2623
logger.debug("Last checker succeeded,"
2624
" keeping {} enabled"
2625
.format(client_name))
2009
yield (name, special_settings[name]())
2013
tcp_server.clients.update(set(
2014
client_class(name = section,
2015
config= dict(client_config_items(
2016
client_config, section)))
2017
for section in client_config.sections()))
2627
client["secret"] = (
2628
pgp.decrypt(client["encrypted_secret"],
2629
client_settings[client_name]
2632
# If decryption fails, we use secret from new settings
2633
logger.debug("Failed to decrypt {} old secret"
2634
.format(client_name))
2635
client["secret"] = (
2636
client_settings[client_name]["secret"])
2638
# Add/remove clients based on new changes made to config
2639
for client_name in (set(old_client_settings)
2640
- set(client_settings)):
2641
del clients_data[client_name]
2642
for client_name in (set(client_settings)
2643
- set(old_client_settings)):
2644
clients_data[client_name] = client_settings[client_name]
2646
# Create all client objects
2647
for client_name, client in clients_data.items():
2648
tcp_server.clients[client_name] = client_class(
2649
name = client_name, settings = client,
2650
server_settings = server_settings)
2018
2652
if not tcp_server.clients:
2019
2653
logger.warning("No clients defined")
2025
pidfile.write(str(pid) + "\n".encode("utf-8"))
2028
logger.error("Could not write to file %r with PID %d",
2031
# "pidfile" was never created
2656
if pidfile is not None:
2660
pidfile.write(str(pid) + "\n".encode("utf-8"))
2662
logger.error("Could not write to file %r with PID %d",
2033
2665
del pidfilename
2035
signal.signal(signal.SIGINT, signal.SIG_IGN)
2037
2667
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2038
2668
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2041
class MandosDBusService(dbus.service.Object):
2671
@alternate_dbus_interfaces({"se.recompile.Mandos":
2672
"se.bsnet.fukt.Mandos"})
2673
class MandosDBusService(DBusObjectWithProperties):
2042
2674
"""A D-Bus proxy object"""
2043
2675
def __init__(self):
2044
2676
dbus.service.Object.__init__(self, bus, "/")
2045
2677
_interface = "se.recompile.Mandos"
2679
@dbus_interface_annotations(_interface)
2681
return { "org.freedesktop.DBus.Property"
2682
".EmitsChangedSignal":
2047
2685
@dbus.service.signal(_interface, signature="o")
2048
2686
def ClientAdded(self, objpath):
2093
class MandosDBusServiceTransitional(MandosDBusService):
2094
__metaclass__ = AlternateDBusNamesMetaclass
2095
mandos_dbus_service = MandosDBusServiceTransitional()
2732
mandos_dbus_service = MandosDBusService()
2098
2735
"Cleanup function; run on exit"
2739
multiprocessing.active_children()
2741
if not (tcp_server.clients or client_settings):
2744
# Store client before exiting. Secrets are encrypted with key
2745
# based on what config file has. If config file is
2746
# removed/edited, old secret will thus be unrecovable.
2748
with PGPEngine() as pgp:
2749
for client in tcp_server.clients.itervalues():
2750
key = client_settings[client.name]["secret"]
2751
client.encrypted_secret = pgp.encrypt(client.secret,
2755
# A list of attributes that can not be pickled
2757
exclude = { "bus", "changedstate", "secret",
2758
"checker", "server_settings" }
2759
for name, typ in (inspect.getmembers
2760
(dbus.service.Object)):
2763
client_dict["encrypted_secret"] = (client
2765
for attr in client.client_structure:
2766
if attr not in exclude:
2767
client_dict[attr] = getattr(client, attr)
2769
clients[client.name] = client_dict
2770
del client_settings[client.name]["secret"]
2773
with (tempfile.NamedTemporaryFile
2774
(mode='wb', suffix=".pickle", prefix='clients-',
2775
dir=os.path.dirname(stored_state_path),
2776
delete=False)) as stored_state:
2777
pickle.dump((clients, client_settings), stored_state)
2778
tempname=stored_state.name
2779
os.rename(tempname, stored_state_path)
2780
except (IOError, OSError) as e:
2786
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2787
logger.warning("Could not save persistent state: {}"
2788
.format(os.strerror(e.errno)))
2790
logger.warning("Could not save persistent state:",
2794
# Delete all clients, and settings from config
2101
2795
while tcp_server.clients:
2102
client = tcp_server.clients.pop()
2796
name, client = tcp_server.clients.popitem()
2104
2798
client.remove_from_connection()
2105
client.disable_hook = None
2106
2799
# Don't signal anything except ClientRemoved
2107
2800
client.disable(quiet=True)
2109
2802
# Emit D-Bus signal
2110
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2803
mandos_dbus_service.ClientRemoved(client
2806
client_settings.clear()
2113
2808
atexit.register(cleanup)
2115
for client in tcp_server.clients:
2810
for client in tcp_server.clients.itervalues():
2117
2812
# Emit D-Bus signal
2118
2813
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2814
# Need to initiate checking of clients
2816
client.init_checker()
2121
2818
tcp_server.enable()
2122
2819
tcp_server.server_activate()
2124
2821
# Find out what port we got
2125
service.port = tcp_server.socket.getsockname()[1]
2823
service.port = tcp_server.socket.getsockname()[1]
2127
2825
logger.info("Now listening on address %r, port %d,"
2128
" flowinfo %d, scope_id %d"
2129
% tcp_server.socket.getsockname())
2826
" flowinfo %d, scope_id %d",
2827
*tcp_server.socket.getsockname())
2131
logger.info("Now listening on address %r, port %d"
2132
% tcp_server.socket.getsockname())
2829
logger.info("Now listening on address %r, port %d",
2830
*tcp_server.socket.getsockname())
2134
2832
#service.interface = tcp_server.socket.getsockname()[3]
2137
# From the Avahi example code
2140
except dbus.exceptions.DBusException as error:
2141
logger.critical("DBusException: %s", error)
2144
# End of Avahi example code
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
2146
2845
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2147
2846
lambda *args, **kwargs: