380
367
self.server_state_changed)
381
368
self.server_state_changed(self.server.GetState())
384
370
class AvahiServiceToSyslog(AvahiService):
385
371
def rename(self):
386
372
"""Add the new name to the syslog messages"""
387
373
ret = AvahiService.rename(self)
388
374
syslogger.setFormatter(logging.Formatter
389
('Mandos ({0}) [%(process)d]:'
390
' %(levelname)s: %(message)s'
375
('Mandos (%s) [%%(process)d]:'
376
' %%(levelname)s: %%(message)s'
395
380
def timedelta_to_milliseconds(td):
396
381
"Convert a datetime.timedelta() to milliseconds"
397
382
return ((td.days * 24 * 60 * 60 * 1000)
398
383
+ (td.seconds * 1000)
399
384
+ (td.microseconds // 1000))
402
386
class Client(object):
403
387
"""A representation of a client host served by this server.
429
413
last_checked_ok: datetime.datetime(); (UTC) or None
430
414
last_checker_status: integer between 0 and 255 reflecting exit
431
415
status of last checker. -1 reflects crashed
432
checker, -2 means no checker completed yet.
433
417
last_enabled: datetime.datetime(); (UTC) or None
434
418
name: string; from the config file, used in log messages and
435
419
D-Bus identifiers
436
420
secret: bytestring; sent verbatim (over TLS) to client
437
421
timeout: datetime.timedelta(); How long from last_checked_ok
438
422
until this client is disabled
439
extended_timeout: extra long timeout when secret has been sent
423
extended_timeout: extra long timeout when password has been sent
440
424
runtime_expansions: Allowed attributes for runtime expansion.
441
425
expires: datetime.datetime(); time (UTC) when a client will be
442
426
disabled, or None
445
429
runtime_expansions = ("approval_delay", "approval_duration",
446
"created", "enabled", "expires",
447
"fingerprint", "host", "interval",
448
"last_approval_request", "last_checked_ok",
430
"created", "enabled", "fingerprint",
431
"host", "interval", "last_checked_ok",
449
432
"last_enabled", "name", "timeout")
450
client_defaults = { "timeout": "PT5M",
451
"extended_timeout": "PT15M",
433
client_defaults = { "timeout": "5m",
434
"extended_timeout": "15m",
453
436
"checker": "fping -q -- %%(host)s",
455
"approval_delay": "PT0S",
456
"approval_duration": "PT1S",
438
"approval_delay": "0s",
439
"approval_duration": "1s",
457
440
"approved_by_default": "True",
458
441
"enabled": "True",
516
495
client["checker_command"] = section["checker"]
517
496
client["last_approval_request"] = None
518
497
client["last_checked_ok"] = None
519
client["last_checker_status"] = -2
498
client["last_checker_status"] = None
499
if client["enabled"]:
500
client["last_enabled"] = datetime.datetime.utcnow()
501
client["expires"] = (datetime.datetime.utcnow()
504
client["last_enabled"] = None
505
client["expires"] = None
523
510
def __init__(self, settings, name = None):
511
"""Note: the 'checker' key in 'config' sets the
512
'checker_command' attribute and *not* the 'checker'
525
515
# adding all client settings
526
516
for setting, value in settings.iteritems():
527
517
setattr(self, setting, value)
530
if not hasattr(self, "last_enabled"):
531
self.last_enabled = datetime.datetime.utcnow()
532
if not hasattr(self, "expires"):
533
self.expires = (datetime.datetime.utcnow()
536
self.last_enabled = None
539
519
logger.debug("Creating client %r", self.name)
540
520
# Uppercase and remove spaces from fingerprint for later
541
521
# comparison purposes with return value from the fingerprint()
543
523
logger.debug(" Fingerprint: %s", self.fingerprint)
544
self.created = settings.get("created",
545
datetime.datetime.utcnow())
524
self.created = settings.get("created", datetime.datetime.utcnow())
547
526
# attributes specific for this server instance
548
527
self.checker = None
549
528
self.checker_initiator_tag = None
577
556
if getattr(self, "enabled", False):
578
557
# Already enabled
559
self.send_changedstate()
580
560
self.expires = datetime.datetime.utcnow() + self.timeout
581
561
self.enabled = True
582
562
self.last_enabled = datetime.datetime.utcnow()
583
563
self.init_checker()
584
self.send_changedstate()
586
565
def disable(self, quiet=True):
587
566
"""Disable this client."""
588
567
if not getattr(self, "enabled", False):
570
self.send_changedstate()
591
572
logger.info("Disabling client %s", self.name)
592
if getattr(self, "disable_initiator_tag", None) is not None:
573
if getattr(self, "disable_initiator_tag", False):
593
574
gobject.source_remove(self.disable_initiator_tag)
594
575
self.disable_initiator_tag = None
595
576
self.expires = None
596
if getattr(self, "checker_initiator_tag", None) is not None:
577
if getattr(self, "checker_initiator_tag", False):
597
578
gobject.source_remove(self.checker_initiator_tag)
598
579
self.checker_initiator_tag = None
599
580
self.stop_checker()
600
581
self.enabled = False
602
self.send_changedstate()
603
582
# Do not run this again if called by a gobject.timeout_add
641
616
logger.warning("Checker for %(name)s crashed?",
644
def checked_ok(self):
645
"""Assert that the client has been seen, alive and well."""
646
self.last_checked_ok = datetime.datetime.utcnow()
647
self.last_checker_status = 0
650
def bump_timeout(self, timeout=None):
651
"""Bump up the timeout for this client."""
619
def checked_ok(self, timeout=None):
620
"""Bump up the timeout for this client.
622
This should only be called when the client has been seen,
652
625
if timeout is None:
653
626
timeout = self.timeout
627
self.last_checked_ok = datetime.datetime.utcnow()
654
628
if self.disable_initiator_tag is not None:
655
629
gobject.source_remove(self.disable_initiator_tag)
656
self.disable_initiator_tag = None
657
630
if getattr(self, "enabled", False):
658
631
self.disable_initiator_tag = (gobject.timeout_add
659
632
(timedelta_to_milliseconds
669
642
If a checker already exists, leave it running and do
671
644
# The reason for not killing a running checker is that if we
672
# did that, and if a checker (for some reason) started running
673
# slowly and taking more than 'interval' time, then the client
674
# would inevitably timeout, since no checker would get a
675
# chance to run to completion. If we instead leave running
645
# did that, then if a checker (for some reason) started
646
# running slowly and taking more than 'interval' time, the
647
# client would inevitably timeout, since no checker would get
648
# a chance to run to completion. If we instead leave running
676
649
# checkers alone, the checker would have to take more time
677
650
# than 'timeout' for the client to be disabled, which is as it
692
665
self.current_checker_command)
693
666
# Start a new checker if needed
694
667
if self.checker is None:
695
# Escape attributes for the shell
696
escaped_attrs = dict(
697
(attr, re.escape(unicode(getattr(self, attr))))
699
self.runtime_expansions)
701
command = self.checker_command % escaped_attrs
702
except TypeError as error:
703
logger.error('Could not format string "%s"',
704
self.checker_command, exc_info=error)
705
return True # Try again later
669
# In case checker_command has exactly one % operator
670
command = self.checker_command % self.host
672
# Escape attributes for the shell
673
escaped_attrs = dict(
675
re.escape(unicode(str(getattr(self, attr, "")),
679
self.runtime_expansions)
682
command = self.checker_command % escaped_attrs
683
except TypeError as error:
684
logger.error('Could not format string "%s":'
685
' %s', self.checker_command, error)
686
return True # Try again later
706
687
self.current_checker_command = command
708
689
logger.info("Starting checker %r for %s",
714
695
self.checker = subprocess.Popen(command,
716
697
shell=True, cwd="/")
698
self.checker_callback_tag = (gobject.child_watch_add
700
self.checker_callback,
702
# The checker may have completed before the gobject
703
# watch was added. Check for this.
704
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
706
gobject.source_remove(self.checker_callback_tag)
707
self.checker_callback(pid, status, command)
717
708
except OSError as error:
718
logger.error("Failed to start subprocess",
720
self.checker_callback_tag = (gobject.child_watch_add
722
self.checker_callback,
724
# The checker may have completed before the gobject
725
# watch was added. Check for this.
726
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
728
gobject.source_remove(self.checker_callback_tag)
729
self.checker_callback(pid, status, command)
709
logger.error("Failed to start subprocess: %s",
730
711
# Re-run this periodically if run by gobject.timeout_add
782
def dbus_interface_annotations(dbus_interface):
783
"""Decorator for marking functions returning interface annotations
787
@dbus_interface_annotations("org.example.Interface")
788
def _foo(self): # Function name does not matter
789
return {"org.freedesktop.DBus.Deprecated": "true",
790
"org.freedesktop.DBus.Property.EmitsChangedSignal":
794
func._dbus_is_interface = True
795
func._dbus_interface = dbus_interface
796
func._dbus_name = dbus_interface
801
def dbus_annotations(annotations):
802
"""Decorator to annotate D-Bus methods, signals or properties
805
@dbus_service_property("org.example.Interface", signature="b",
807
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
808
"org.freedesktop.DBus.Property."
809
"EmitsChangedSignal": "false"})
810
def Property_dbus_property(self):
811
return dbus.Boolean(False)
814
func._dbus_annotations = annotations
819
763
class DBusPropertyException(dbus.exceptions.DBusException):
820
764
"""A base class for D-Bus property-related exceptions
847
def _is_dbus_thing(thing):
848
"""Returns a function testing if an attribute is a D-Bus thing
850
If called like _is_dbus_thing("method") it returns a function
851
suitable for use as predicate to inspect.getmembers().
853
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
791
def _is_dbus_property(obj):
792
return getattr(obj, "_dbus_is_property", False)
856
def _get_all_dbus_things(self, thing):
794
def _get_all_dbus_properties(self):
857
795
"""Returns a generator of (name, attribute) pairs
859
return ((getattr(athing.__get__(self), "_dbus_name",
861
athing.__get__(self))
797
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
862
798
for cls in self.__class__.__mro__
864
inspect.getmembers(cls,
865
self._is_dbus_thing(thing)))
800
inspect.getmembers(cls, self._is_dbus_property))
867
802
def _get_dbus_property(self, interface_name, property_name):
868
803
"""Returns a bound method if one exists which is a D-Bus
955
887
e.setAttribute("access", prop._dbus_access)
957
889
for if_tag in document.getElementsByTagName("interface"):
959
890
for tag in (make_tag(document, name, prop)
961
in self._get_all_dbus_things("property")
892
in self._get_all_dbus_properties()
962
893
if prop._dbus_interface
963
894
== if_tag.getAttribute("name")):
964
895
if_tag.appendChild(tag)
965
# Add annotation tags
966
for typ in ("method", "signal", "property"):
967
for tag in if_tag.getElementsByTagName(typ):
969
for name, prop in (self.
970
_get_all_dbus_things(typ)):
971
if (name == tag.getAttribute("name")
972
and prop._dbus_interface
973
== if_tag.getAttribute("name")):
974
annots.update(getattr
978
for name, value in annots.iteritems():
979
ann_tag = document.createElement(
981
ann_tag.setAttribute("name", name)
982
ann_tag.setAttribute("value", value)
983
tag.appendChild(ann_tag)
984
# Add interface annotation tags
985
for annotation, value in dict(
986
itertools.chain.from_iterable(
987
annotations().iteritems()
988
for name, annotations in
989
self._get_all_dbus_things("interface")
990
if name == if_tag.getAttribute("name")
992
ann_tag = document.createElement("annotation")
993
ann_tag.setAttribute("name", annotation)
994
ann_tag.setAttribute("value", value)
995
if_tag.appendChild(ann_tag)
996
896
# Add the names to the return values for the
997
897
# "org.freedesktop.DBus.Properties" methods
998
898
if (if_tag.getAttribute("name")
1025
925
variant_level=variant_level)
1028
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1029
"""A class decorator; applied to a subclass of
1030
dbus.service.Object, it will add alternate D-Bus attributes with
1031
interface names according to the "alt_interface_names" mapping.
1034
@alternate_dbus_interfaces({"org.example.Interface":
1035
"net.example.AlternateInterface"})
1036
class SampleDBusObject(dbus.service.Object):
1037
@dbus.service.method("org.example.Interface")
1038
def SampleDBusMethod():
1041
The above "SampleDBusMethod" on "SampleDBusObject" will be
1042
reachable via two interfaces: "org.example.Interface" and
1043
"net.example.AlternateInterface", the latter of which will have
1044
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1045
"true", unless "deprecate" is passed with a False value.
1047
This works for methods and signals, and also for D-Bus properties
1048
(from DBusObjectWithProperties) and interfaces (from the
1049
dbus_interface_annotations decorator).
928
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
930
"""Applied to an empty subclass of a D-Bus object, this metaclass
931
will add additional D-Bus attributes matching a certain pattern.
1052
for orig_interface_name, alt_interface_name in (
1053
alt_interface_names.iteritems()):
1055
interface_names = set()
1056
# Go though all attributes of the class
1057
for attrname, attribute in inspect.getmembers(cls):
933
def __new__(mcs, name, bases, attr):
934
# Go through all the base classes which could have D-Bus
935
# methods, signals, or properties in them
936
for base in (b for b in bases
937
if issubclass(b, dbus.service.Object)):
938
# Go though all attributes of the base class
939
for attrname, attribute in inspect.getmembers(base):
1058
940
# Ignore non-D-Bus attributes, and D-Bus attributes
1059
941
# with the wrong interface name
1060
942
if (not hasattr(attribute, "_dbus_interface")
1061
943
or not attribute._dbus_interface
1062
.startswith(orig_interface_name)):
944
.startswith("se.recompile.Mandos")):
1064
946
# Create an alternate D-Bus interface name based on
1065
947
# the current name
1066
948
alt_interface = (attribute._dbus_interface
1067
.replace(orig_interface_name,
1068
alt_interface_name))
1069
interface_names.add(alt_interface)
949
.replace("se.recompile.Mandos",
950
"se.bsnet.fukt.Mandos"))
1070
951
# Is this a D-Bus signal?
1071
952
if getattr(attribute, "_dbus_is_signal", False):
1072
953
# Extract the original non-method function by
1087
968
nonmethod_func.func_name,
1088
969
nonmethod_func.func_defaults,
1089
970
nonmethod_func.func_closure)))
1090
# Copy annotations, if any
1092
new_function._dbus_annotations = (
1093
dict(attribute._dbus_annotations))
1094
except AttributeError:
1096
971
# Define a creator of a function to call both the
1097
# original and alternate functions, so both the
1098
# original and alternate signals gets sent when
1099
# the function is called
972
# old and new functions, so both the old and new
973
# signals gets sent when the function is called
1100
974
def fixscope(func1, func2):
1101
975
"""This function is a scope container to pass
1102
976
func1 and func2 to the "call_both" function
1151
1020
attribute.func_name,
1152
1021
attribute.func_defaults,
1153
1022
attribute.func_closure)))
1154
# Copy annotations, if any
1156
attr[attrname]._dbus_annotations = (
1157
dict(attribute._dbus_annotations))
1158
except AttributeError:
1160
# Is this a D-Bus interface?
1161
elif getattr(attribute, "_dbus_is_interface", False):
1162
# Create a new, but exactly alike, function
1163
# object. Decorate it to be a new D-Bus interface
1164
# with the alternate D-Bus interface name. Add it
1166
attr[attrname] = (dbus_interface_annotations
1169
(attribute.func_code,
1170
attribute.func_globals,
1171
attribute.func_name,
1172
attribute.func_defaults,
1173
attribute.func_closure)))
1175
# Deprecate all alternate interfaces
1176
iname="_AlternateDBusNames_interface_annotation{0}"
1177
for interface_name in interface_names:
1178
@dbus_interface_annotations(interface_name)
1180
return { "org.freedesktop.DBus.Deprecated":
1182
# Find an unused name
1183
for aname in (iname.format(i)
1184
for i in itertools.count()):
1185
if aname not in attr:
1189
# Replace the class with a new subclass of it with
1190
# methods, signals, etc. as created above.
1191
cls = type(b"{0}Alternate".format(cls.__name__),
1197
@alternate_dbus_interfaces({"se.recompile.Mandos":
1198
"se.bsnet.fukt.Mandos"})
1023
return type.__new__(mcs, name, bases, attr)
1199
1026
class ClientDBus(Client, DBusObjectWithProperties):
1200
1027
"""A Client class using D-Bus
1531
1356
def Timeout_dbus_property(self, value=None):
1532
1357
if value is None: # get
1533
1358
return dbus.UInt64(self.timeout_milliseconds())
1534
old_timeout = self.timeout
1535
1359
self.timeout = datetime.timedelta(0, 0, 0, value)
1536
# Reschedule disabling
1538
now = datetime.datetime.utcnow()
1539
self.expires += self.timeout - old_timeout
1540
if self.expires <= now:
1541
# The timeout has passed
1544
if (getattr(self, "disable_initiator_tag", None)
1547
gobject.source_remove(self.disable_initiator_tag)
1548
self.disable_initiator_tag = (
1549
gobject.timeout_add(
1550
timedelta_to_milliseconds(self.expires - now),
1360
if getattr(self, "disable_initiator_tag", None) is None:
1362
# Reschedule timeout
1363
gobject.source_remove(self.disable_initiator_tag)
1364
self.disable_initiator_tag = None
1366
time_to_die = timedelta_to_milliseconds((self
1371
if time_to_die <= 0:
1372
# The timeout has passed
1375
self.expires = (datetime.datetime.utcnow()
1376
+ datetime.timedelta(milliseconds =
1378
self.disable_initiator_tag = (gobject.timeout_add
1379
(time_to_die, self.disable))
1553
1381
# ExtendedTimeout - property
1554
1382
@dbus_service_property(_interface, signature="t",
1900
1735
use_ipv6: Boolean; to use IPv6 or not
1902
1737
def __init__(self, server_address, RequestHandlerClass,
1903
interface=None, use_ipv6=True, socketfd=None):
1904
"""If socketfd is set, use that file descriptor instead of
1905
creating a new one with socket.socket().
1738
interface=None, use_ipv6=True):
1907
1739
self.interface = interface
1909
1741
self.address_family = socket.AF_INET6
1910
if socketfd is not None:
1911
# Save the file descriptor
1912
self.socketfd = socketfd
1913
# Save the original socket.socket() function
1914
self.socket_socket = socket.socket
1915
# To implement --socket, we monkey patch socket.socket.
1917
# (When socketserver.TCPServer is a new-style class, we
1918
# could make self.socket into a property instead of monkey
1919
# patching socket.socket.)
1921
# Create a one-time-only replacement for socket.socket()
1922
@functools.wraps(socket.socket)
1923
def socket_wrapper(*args, **kwargs):
1924
# Restore original function so subsequent calls are
1926
socket.socket = self.socket_socket
1927
del self.socket_socket
1928
# This time only, return a new socket object from the
1929
# saved file descriptor.
1930
return socket.fromfd(self.socketfd, *args, **kwargs)
1931
# Replace socket.socket() function with wrapper
1932
socket.socket = socket_wrapper
1933
# The socketserver.TCPServer.__init__ will call
1934
# socket.socket(), which might be our replacement,
1935
# socket_wrapper(), if socketfd was set.
1936
1742
socketserver.TCPServer.__init__(self, server_address,
1937
1743
RequestHandlerClass)
1939
1744
def server_bind(self):
1940
1745
"""This overrides the normal server_bind() function
1941
1746
to bind to an interface if one was specified, and also NOT to
1950
1755
self.socket.setsockopt(socket.SOL_SOCKET,
1951
1756
SO_BINDTODEVICE,
1952
str(self.interface + '\0'))
1953
1759
except socket.error as error:
1954
if error.errno == errno.EPERM:
1955
logger.error("No permission to bind to"
1956
" interface %s", self.interface)
1957
elif error.errno == errno.ENOPROTOOPT:
1760
if error[0] == errno.EPERM:
1761
logger.error("No permission to"
1762
" bind to interface %s",
1764
elif error[0] == errno.ENOPROTOOPT:
1958
1765
logger.error("SO_BINDTODEVICE not available;"
1959
1766
" cannot bind to interface %s",
1960
1767
self.interface)
1961
elif error.errno == errno.ENODEV:
1962
logger.error("Interface %s does not exist,"
1963
" cannot bind", self.interface)
1966
1770
# Only bind(2) the socket if we really need to.
2027
1830
def handle_ipc(self, source, condition, parent_pipe=None,
2028
1831
proc = None, client_object=None):
1833
gobject.IO_IN: "IN", # There is data to read.
1834
gobject.IO_OUT: "OUT", # Data can be written (without
1836
gobject.IO_PRI: "PRI", # There is urgent data to read.
1837
gobject.IO_ERR: "ERR", # Error condition.
1838
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1839
# broken, usually for pipes and
1842
conditions_string = ' | '.join(name
1844
condition_names.iteritems()
1845
if cond & condition)
2029
1846
# error, or the other end of multiprocessing.Pipe has closed
2030
if condition & (gobject.IO_ERR | gobject.IO_HUP):
1847
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2031
1848
# Wait for other process to exit
2094
def rfc3339_duration_to_delta(duration):
2095
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2097
>>> rfc3339_duration_to_delta("P7D")
2098
datetime.timedelta(7)
2099
>>> rfc3339_duration_to_delta("PT60S")
2100
datetime.timedelta(0, 60)
2101
>>> rfc3339_duration_to_delta("PT60M")
2102
datetime.timedelta(0, 3600)
2103
>>> rfc3339_duration_to_delta("PT24H")
2104
datetime.timedelta(1)
2105
>>> rfc3339_duration_to_delta("P1W")
2106
datetime.timedelta(7)
2107
>>> rfc3339_duration_to_delta("PT5M30S")
2108
datetime.timedelta(0, 330)
2109
>>> rfc3339_duration_to_delta("P1DT3M20S")
2110
datetime.timedelta(1, 200)
2113
# Parsing an RFC 3339 duration with regular expressions is not
2114
# possible - there would have to be multiple places for the same
2115
# values, like seconds. The current code, while more esoteric, is
2116
# cleaner without depending on a parsing library. If Python had a
2117
# built-in library for parsing we would use it, but we'd like to
2118
# avoid excessive use of external libraries.
2120
# New type for defining tokens, syntax, and semantics all-in-one
2121
Token = collections.namedtuple("Token",
2122
("regexp", # To match token; if
2123
# "value" is not None,
2124
# must have a "group"
2126
"value", # datetime.timedelta or
2128
"followers")) # Tokens valid after
2130
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2131
# the "duration" ABNF definition in RFC 3339, Appendix A.
2132
token_end = Token(re.compile(r"$"), None, frozenset())
2133
token_second = Token(re.compile(r"(\d+)S"),
2134
datetime.timedelta(seconds=1),
2135
frozenset((token_end,)))
2136
token_minute = Token(re.compile(r"(\d+)M"),
2137
datetime.timedelta(minutes=1),
2138
frozenset((token_second, token_end)))
2139
token_hour = Token(re.compile(r"(\d+)H"),
2140
datetime.timedelta(hours=1),
2141
frozenset((token_minute, token_end)))
2142
token_time = Token(re.compile(r"T"),
2144
frozenset((token_hour, token_minute,
2146
token_day = Token(re.compile(r"(\d+)D"),
2147
datetime.timedelta(days=1),
2148
frozenset((token_time, token_end)))
2149
token_month = Token(re.compile(r"(\d+)M"),
2150
datetime.timedelta(weeks=4),
2151
frozenset((token_day, token_end)))
2152
token_year = Token(re.compile(r"(\d+)Y"),
2153
datetime.timedelta(weeks=52),
2154
frozenset((token_month, token_end)))
2155
token_week = Token(re.compile(r"(\d+)W"),
2156
datetime.timedelta(weeks=1),
2157
frozenset((token_end,)))
2158
token_duration = Token(re.compile(r"P"), None,
2159
frozenset((token_year, token_month,
2160
token_day, token_time,
2162
# Define starting values
2163
value = datetime.timedelta() # Value so far
2165
followers = frozenset(token_duration,) # Following valid tokens
2166
s = duration # String left to parse
2167
# Loop until end token is found
2168
while found_token is not token_end:
2169
# Search for any currently valid tokens
2170
for token in followers:
2171
match = token.regexp.match(s)
2172
if match is not None:
2174
if token.value is not None:
2175
# Value found, parse digits
2176
factor = int(match.group(1), 10)
2177
# Add to value so far
2178
value += factor * token.value
2179
# Strip token from string
2180
s = token.regexp.sub("", s, 1)
2183
# Set valid next tokens
2184
followers = found_token.followers
2187
# No currently valid tokens were found
2188
raise ValueError("Invalid RFC 3339 duration")
2193
1911
def string_to_delta(interval):
2194
1912
"""Parse a string and return a datetime.timedelta
2339
2043
# Convert the SafeConfigParser object to a dict
2340
2044
server_settings = server_config.defaults()
2341
2045
# Use the appropriate methods on the non-string config options
2342
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2046
for option in ("debug", "use_dbus", "use_ipv6"):
2343
2047
server_settings[option] = server_config.getboolean("DEFAULT",
2345
2049
if server_settings["port"]:
2346
2050
server_settings["port"] = server_config.getint("DEFAULT",
2348
if server_settings["socket"]:
2349
server_settings["socket"] = server_config.getint("DEFAULT",
2351
# Later, stdin will, and stdout and stderr might, be dup'ed
2352
# over with an opened os.devnull. But we don't want this to
2353
# happen with a supplied network socket.
2354
if 0 <= server_settings["socket"] <= 2:
2355
server_settings["socket"] = os.dup(server_settings
2357
2052
del server_config
2359
2054
# Override the settings from the config file with command line
2384
2076
use_ipv6 = server_settings["use_ipv6"]
2385
2077
stored_state_path = os.path.join(server_settings["statedir"],
2386
2078
stored_state_file)
2387
foreground = server_settings["foreground"]
2390
initlogger(debug, logging.DEBUG)
2081
initlogger(logging.DEBUG)
2392
2083
if not debuglevel:
2395
2086
level = getattr(logging, debuglevel.upper())
2396
initlogger(debug, level)
2398
2089
if server_settings["servicename"] != "Mandos":
2399
2090
syslogger.setFormatter(logging.Formatter
2400
('Mandos ({0}) [%(process)d]:'
2401
' %(levelname)s: %(message)s'
2402
.format(server_settings
2091
('Mandos (%s) [%%(process)d]:'
2092
' %%(levelname)s: %%(message)s'
2093
% server_settings["servicename"]))
2405
2095
# Parse config file with clients
2406
client_config = configparser.SafeConfigParser(Client
2096
client_config = configparser.SafeConfigParser(Client.client_defaults)
2408
2097
client_config.read(os.path.join(server_settings["configdir"],
2409
2098
"clients.conf"))
2419
2108
use_ipv6=use_ipv6,
2420
2109
gnutls_priority=
2421
2110
server_settings["priority"],
2423
socketfd=(server_settings["socket"]
2426
2113
pidfilename = "/var/run/mandos.pid"
2429
2115
pidfile = open(pidfilename, "w")
2430
except IOError as e:
2431
logger.error("Could not open file %r", pidfilename,
2117
logger.error("Could not open file %r", pidfilename)
2434
for name in ("_mandos", "mandos", "nobody"):
2120
uid = pwd.getpwnam("_mandos").pw_uid
2121
gid = pwd.getpwnam("_mandos").pw_gid
2436
uid = pwd.getpwnam(name).pw_uid
2437
gid = pwd.getpwnam(name).pw_gid
2124
uid = pwd.getpwnam("mandos").pw_uid
2125
gid = pwd.getpwnam("mandos").pw_gid
2439
2126
except KeyError:
2128
uid = pwd.getpwnam("nobody").pw_uid
2129
gid = pwd.getpwnam("nobody").pw_gid
2447
2136
except OSError as error:
2448
if error.errno != errno.EPERM:
2137
if error[0] != errno.EPERM:
2463
2152
.gnutls_global_set_log_function(debug_gnutls))
2465
2154
# Redirect stdin so all checkers get /dev/null
2466
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2155
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2467
2156
os.dup2(null, sys.stdin.fileno())
2160
# No console logging
2161
logger.removeHandler(console)
2471
2163
# Need to fork before connecting to D-Bus
2473
2165
# Close all input and output, do double fork, etc.
2476
# multiprocessing will use threads, so before we use gobject we
2477
# need to inform gobject that threads will be used.
2478
2168
gobject.threads_init()
2480
2170
global main_loop
2481
2171
# From the Avahi example code
2482
DBusGMainLoop(set_as_default=True)
2172
DBusGMainLoop(set_as_default=True )
2483
2173
main_loop = gobject.MainLoop()
2484
2174
bus = dbus.SystemBus()
2485
2175
# End of Avahi example code
2556
2241
# Clients who has passed its expire date can still be
2557
2242
# enabled if its last checker was successful. Clients
2558
# whose checker succeeded before we stored its state is
2559
# assumed to have successfully run all checkers during
2243
# whose checker failed before we stored its state is
2244
# assumed to have failed all checkers during downtime.
2561
2245
if client["enabled"]:
2562
2246
if datetime.datetime.utcnow() >= client["expires"]:
2563
2247
if not client["last_checked_ok"]:
2564
2248
logger.warning(
2565
2249
"disabling client {0} - Client never "
2566
"performed a successful checker"
2567
.format(client_name))
2250
"performed a successfull checker"
2251
.format(client["name"]))
2568
2252
client["enabled"] = False
2569
2253
elif client["last_checker_status"] != 0:
2570
2254
logger.warning(
2571
2255
"disabling client {0} - Client "
2572
2256
"last checker failed with error code {1}"
2573
.format(client_name,
2257
.format(client["name"],
2574
2258
client["last_checker_status"]))
2575
2259
client["enabled"] = False
2577
2261
client["expires"] = (datetime.datetime
2579
2263
+ client["timeout"])
2580
logger.debug("Last checker succeeded,"
2581
" keeping {0} enabled"
2582
.format(client_name))
2584
2266
client["secret"] = (
2585
2267
pgp.decrypt(client["encrypted_secret"],
2591
2273
.format(client_name))
2592
2274
client["secret"] = (
2593
2275
client_settings[client_name]["secret"])
2595
2278
# Add/remove clients based on new changes made to config
2596
for client_name in (set(old_client_settings)
2597
- set(client_settings)):
2279
for client_name in set(old_client_settings) - set(client_settings):
2598
2280
del clients_data[client_name]
2599
for client_name in (set(client_settings)
2600
- set(old_client_settings)):
2281
for client_name in set(client_settings) - set(old_client_settings):
2601
2282
clients_data[client_name] = client_settings[client_name]
2603
# Create all client objects
2284
# Create clients all clients
2604
2285
for client_name, client in clients_data.iteritems():
2605
2286
tcp_server.clients[client_name] = client_class(
2606
2287
name = client_name, settings = client)
2608
2289
if not tcp_server.clients:
2609
2290
logger.warning("No clients defined")
2612
if pidfile is not None:
2616
pidfile.write(str(pid) + "\n".encode("utf-8"))
2618
logger.error("Could not write to file %r with PID %d",
2296
pidfile.write(str(pid) + "\n".encode("utf-8"))
2299
logger.error("Could not write to file %r with PID %d",
2302
# "pidfile" was never created
2621
2304
del pidfilename
2305
signal.signal(signal.SIGINT, signal.SIG_IGN)
2623
2307
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2624
2308
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2627
@alternate_dbus_interfaces({"se.recompile.Mandos":
2628
"se.bsnet.fukt.Mandos"})
2629
class MandosDBusService(DBusObjectWithProperties):
2311
class MandosDBusService(dbus.service.Object):
2630
2312
"""A D-Bus proxy object"""
2631
2313
def __init__(self):
2632
2314
dbus.service.Object.__init__(self, bus, "/")
2633
2315
_interface = "se.recompile.Mandos"
2635
@dbus_interface_annotations(_interface)
2637
return { "org.freedesktop.DBus.Property"
2638
".EmitsChangedSignal":
2641
2317
@dbus.service.signal(_interface, signature="o")
2642
2318
def ClientAdded(self, objpath):
2724
2402
del client_settings[client.name]["secret"]
2727
with (tempfile.NamedTemporaryFile
2728
(mode='wb', suffix=".pickle", prefix='clients-',
2729
dir=os.path.dirname(stored_state_path),
2730
delete=False)) as stored_state:
2405
with os.fdopen(os.open(stored_state_path,
2406
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2407
0600), "wb") as stored_state:
2731
2408
pickle.dump((clients, client_settings), stored_state)
2732
tempname=stored_state.name
2733
os.rename(tempname, stored_state_path)
2734
2409
except (IOError, OSError) as e:
2740
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2741
logger.warning("Could not save persistent state: {0}"
2742
.format(os.strerror(e.errno)))
2744
logger.warning("Could not save persistent state:",
2410
logger.warning("Could not save persistent state: {0}"
2412
if e.errno not in (errno.ENOENT, errno.EACCES):
2748
2415
# Delete all clients, and settings from config
2749
2416
while tcp_server.clients:
2776
2443
service.port = tcp_server.socket.getsockname()[1]
2778
2445
logger.info("Now listening on address %r, port %d,"
2779
" flowinfo %d, scope_id %d",
2780
*tcp_server.socket.getsockname())
2446
" flowinfo %d, scope_id %d"
2447
% tcp_server.socket.getsockname())
2782
logger.info("Now listening on address %r, port %d",
2783
*tcp_server.socket.getsockname())
2449
logger.info("Now listening on address %r, port %d"
2450
% tcp_server.socket.getsockname())
2785
2452
#service.interface = tcp_server.socket.getsockname()[3]