172
171
def password_encode(self, password):
173
172
# Passphrase can not be empty and can not contain newlines or
174
173
# NUL bytes. So we prefix it and hex encode it.
175
encoded = b"mandos" + binascii.hexlify(password)
176
if len(encoded) > 2048:
177
# GnuPG can't handle long passwords, so encode differently
178
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
179
.replace(b"\n", b"\\n")
180
.replace(b"\0", b"\\x00"))
174
return b"mandos" + binascii.hexlify(password)
183
176
def encrypt(self, data, password):
184
passphrase = self.password_encode(password)
185
with tempfile.NamedTemporaryFile(dir=self.tempdir
187
passfile.write(passphrase)
189
proc = subprocess.Popen(['gpg', '--symmetric',
193
stdin = subprocess.PIPE,
194
stdout = subprocess.PIPE,
195
stderr = subprocess.PIPE)
196
ciphertext, err = proc.communicate(input = data)
197
if proc.returncode != 0:
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
190
self.gnupg.passphrase = None
199
191
return ciphertext
201
193
def decrypt(self, data, password):
202
passphrase = self.password_encode(password)
203
with tempfile.NamedTemporaryFile(dir = self.tempdir
205
passfile.write(passphrase)
207
proc = subprocess.Popen(['gpg', '--decrypt',
211
stdin = subprocess.PIPE,
212
stdout = subprocess.PIPE,
213
stderr = subprocess.PIPE)
214
decrypted_plaintext, err = proc.communicate(input
216
if proc.returncode != 0:
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
207
self.gnupg.passphrase = None
218
208
return decrypted_plaintext
221
212
class AvahiError(Exception):
222
213
def __init__(self, value, *args, **kwargs):
223
214
self.value = value
386
369
self.server_state_changed)
387
370
self.server_state_changed(self.server.GetState())
390
372
class AvahiServiceToSyslog(AvahiService):
391
373
def rename(self):
392
374
"""Add the new name to the syslog messages"""
393
375
ret = AvahiService.rename(self)
394
376
syslogger.setFormatter(logging.Formatter
395
('Mandos ({0}) [%(process)d]:'
396
' %(levelname)s: %(message)s'
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
401
382
def timedelta_to_milliseconds(td):
402
383
"Convert a datetime.timedelta() to milliseconds"
403
384
return ((td.days * 24 * 60 * 60 * 1000)
404
385
+ (td.seconds * 1000)
405
386
+ (td.microseconds // 1000))
408
388
class Client(object):
409
389
"""A representation of a client host served by this server.
446
426
runtime_expansions: Allowed attributes for runtime expansion.
447
427
expires: datetime.datetime(); time (UTC) when a client will be
448
428
disabled, or None
449
server_settings: The server_settings dict from main()
452
431
runtime_expansions = ("approval_delay", "approval_duration",
453
"created", "enabled", "expires",
454
"fingerprint", "host", "interval",
455
"last_approval_request", "last_checked_ok",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
456
434
"last_enabled", "name", "timeout")
457
client_defaults = { "timeout": "PT5M",
458
"extended_timeout": "PT15M",
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
460
438
"checker": "fping -q -- %%(host)s",
462
"approval_delay": "PT0S",
463
"approval_duration": "PT1S",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
464
442
"approved_by_default": "True",
465
443
"enabled": "True",
587
566
if getattr(self, "enabled", False):
588
567
# Already enabled
569
self.send_changedstate()
590
570
self.expires = datetime.datetime.utcnow() + self.timeout
591
571
self.enabled = True
592
572
self.last_enabled = datetime.datetime.utcnow()
593
573
self.init_checker()
594
self.send_changedstate()
596
575
def disable(self, quiet=True):
597
576
"""Disable this client."""
598
577
if not getattr(self, "enabled", False):
580
self.send_changedstate()
601
582
logger.info("Disabling client %s", self.name)
602
if getattr(self, "disable_initiator_tag", None) is not None:
583
if getattr(self, "disable_initiator_tag", False):
603
584
gobject.source_remove(self.disable_initiator_tag)
604
585
self.disable_initiator_tag = None
605
586
self.expires = None
606
if getattr(self, "checker_initiator_tag", None) is not None:
587
if getattr(self, "checker_initiator_tag", False):
607
588
gobject.source_remove(self.checker_initiator_tag)
608
589
self.checker_initiator_tag = None
609
590
self.stop_checker()
610
591
self.enabled = False
612
self.send_changedstate()
613
592
# Do not run this again if called by a gobject.timeout_add
679
653
If a checker already exists, leave it running and do
681
655
# The reason for not killing a running checker is that if we
682
# did that, and if a checker (for some reason) started running
683
# slowly and taking more than 'interval' time, then the client
684
# would inevitably timeout, since no checker would get a
685
# chance to run to completion. If we instead leave running
656
# did that, then if a checker (for some reason) started
657
# running slowly and taking more than 'interval' time, the
658
# client would inevitably timeout, since no checker would get
659
# a chance to run to completion. If we instead leave running
686
660
# checkers alone, the checker would have to take more time
687
661
# than 'timeout' for the client to be disabled, which is as it
702
676
self.current_checker_command)
703
677
# Start a new checker if needed
704
678
if self.checker is None:
705
# Escape attributes for the shell
706
escaped_attrs = dict(
707
(attr, re.escape(unicode(getattr(self, attr))))
709
self.runtime_expansions)
711
command = self.checker_command % escaped_attrs
712
except TypeError as error:
713
logger.error('Could not format string "%s"',
714
self.checker_command, exc_info=error)
715
return True # Try again later
680
# In case checker_command has exactly one % operator
681
command = self.checker_command % self.host
683
# Escape attributes for the shell
684
escaped_attrs = dict(
686
re.escape(unicode(str(getattr(self, attr, "")),
690
self.runtime_expansions)
693
command = self.checker_command % escaped_attrs
694
except TypeError as error:
695
logger.error('Could not format string "%s":'
696
' %s', self.checker_command, error)
697
return True # Try again later
716
698
self.current_checker_command = command
718
700
logger.info("Starting checker %r for %s",
721
703
# in normal mode, that is already done by daemon(),
722
704
# and in debug mode we don't want to. (Stdin is
723
705
# always replaced by /dev/null.)
724
# The exception is when not debugging but nevertheless
725
# running in the foreground; use the previously
728
if (not self.server_settings["debug"]
729
and self.server_settings["foreground"]):
730
popen_args.update({"stdout": wnull,
732
706
self.checker = subprocess.Popen(command,
736
except OSError as error:
737
logger.error("Failed to start subprocess",
740
self.checker_callback_tag = (gobject.child_watch_add
742
self.checker_callback,
744
# The checker may have completed before the gobject
745
# watch was added. Check for this.
709
self.checker_callback_tag = (gobject.child_watch_add
711
self.checker_callback,
713
# The checker may have completed before the gobject
714
# watch was added. Check for this.
747
715
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
717
gobject.source_remove(self.checker_callback_tag)
718
self.checker_callback(pid, status, command)
748
719
except OSError as error:
749
if error.errno == errno.ECHILD:
750
# This should never happen
751
logger.error("Child process vanished",
756
gobject.source_remove(self.checker_callback_tag)
757
self.checker_callback(pid, status, command)
720
logger.error("Failed to start subprocess: %s",
758
722
# Re-run this periodically if run by gobject.timeout_add
810
def dbus_interface_annotations(dbus_interface):
811
"""Decorator for marking functions returning interface annotations
815
@dbus_interface_annotations("org.example.Interface")
816
def _foo(self): # Function name does not matter
817
return {"org.freedesktop.DBus.Deprecated": "true",
818
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
func._dbus_is_interface = True
823
func._dbus_interface = dbus_interface
824
func._dbus_name = dbus_interface
829
def dbus_annotations(annotations):
830
"""Decorator to annotate D-Bus methods, signals or properties
833
@dbus_service_property("org.example.Interface", signature="b",
835
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
836
"org.freedesktop.DBus.Property."
837
"EmitsChangedSignal": "false"})
838
def Property_dbus_property(self):
839
return dbus.Boolean(False)
842
func._dbus_annotations = annotations
847
774
class DBusPropertyException(dbus.exceptions.DBusException):
848
775
"""A base class for D-Bus property-related exceptions
875
def _is_dbus_thing(thing):
876
"""Returns a function testing if an attribute is a D-Bus thing
878
If called like _is_dbus_thing("method") it returns a function
879
suitable for use as predicate to inspect.getmembers().
881
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
802
def _is_dbus_property(obj):
803
return getattr(obj, "_dbus_is_property", False)
884
def _get_all_dbus_things(self, thing):
805
def _get_all_dbus_properties(self):
885
806
"""Returns a generator of (name, attribute) pairs
887
return ((getattr(athing.__get__(self), "_dbus_name",
889
athing.__get__(self))
808
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
890
809
for cls in self.__class__.__mro__
892
inspect.getmembers(cls,
893
self._is_dbus_thing(thing)))
811
inspect.getmembers(cls, self._is_dbus_property))
895
813
def _get_dbus_property(self, interface_name, property_name):
896
814
"""Returns a bound method if one exists which is a D-Bus
983
898
e.setAttribute("access", prop._dbus_access)
985
900
for if_tag in document.getElementsByTagName("interface"):
987
901
for tag in (make_tag(document, name, prop)
989
in self._get_all_dbus_things("property")
903
in self._get_all_dbus_properties()
990
904
if prop._dbus_interface
991
905
== if_tag.getAttribute("name")):
992
906
if_tag.appendChild(tag)
993
# Add annotation tags
994
for typ in ("method", "signal", "property"):
995
for tag in if_tag.getElementsByTagName(typ):
997
for name, prop in (self.
998
_get_all_dbus_things(typ)):
999
if (name == tag.getAttribute("name")
1000
and prop._dbus_interface
1001
== if_tag.getAttribute("name")):
1002
annots.update(getattr
1004
"_dbus_annotations",
1006
for name, value in annots.iteritems():
1007
ann_tag = document.createElement(
1009
ann_tag.setAttribute("name", name)
1010
ann_tag.setAttribute("value", value)
1011
tag.appendChild(ann_tag)
1012
# Add interface annotation tags
1013
for annotation, value in dict(
1014
itertools.chain.from_iterable(
1015
annotations().iteritems()
1016
for name, annotations in
1017
self._get_all_dbus_things("interface")
1018
if name == if_tag.getAttribute("name")
1020
ann_tag = document.createElement("annotation")
1021
ann_tag.setAttribute("name", annotation)
1022
ann_tag.setAttribute("value", value)
1023
if_tag.appendChild(ann_tag)
1024
907
# Add the names to the return values for the
1025
908
# "org.freedesktop.DBus.Properties" methods
1026
909
if (if_tag.getAttribute("name")
1053
936
variant_level=variant_level)
1056
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1057
"""A class decorator; applied to a subclass of
1058
dbus.service.Object, it will add alternate D-Bus attributes with
1059
interface names according to the "alt_interface_names" mapping.
1062
@alternate_dbus_interfaces({"org.example.Interface":
1063
"net.example.AlternateInterface"})
1064
class SampleDBusObject(dbus.service.Object):
1065
@dbus.service.method("org.example.Interface")
1066
def SampleDBusMethod():
1069
The above "SampleDBusMethod" on "SampleDBusObject" will be
1070
reachable via two interfaces: "org.example.Interface" and
1071
"net.example.AlternateInterface", the latter of which will have
1072
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1073
"true", unless "deprecate" is passed with a False value.
1075
This works for methods and signals, and also for D-Bus properties
1076
(from DBusObjectWithProperties) and interfaces (from the
1077
dbus_interface_annotations decorator).
939
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
941
"""Applied to an empty subclass of a D-Bus object, this metaclass
942
will add additional D-Bus attributes matching a certain pattern.
1080
for orig_interface_name, alt_interface_name in (
1081
alt_interface_names.iteritems()):
1083
interface_names = set()
1084
# Go though all attributes of the class
1085
for attrname, attribute in inspect.getmembers(cls):
944
def __new__(mcs, name, bases, attr):
945
# Go through all the base classes which could have D-Bus
946
# methods, signals, or properties in them
947
for base in (b for b in bases
948
if issubclass(b, dbus.service.Object)):
949
# Go though all attributes of the base class
950
for attrname, attribute in inspect.getmembers(base):
1086
951
# Ignore non-D-Bus attributes, and D-Bus attributes
1087
952
# with the wrong interface name
1088
953
if (not hasattr(attribute, "_dbus_interface")
1089
954
or not attribute._dbus_interface
1090
.startswith(orig_interface_name)):
955
.startswith("se.recompile.Mandos")):
1092
957
# Create an alternate D-Bus interface name based on
1093
958
# the current name
1094
959
alt_interface = (attribute._dbus_interface
1095
.replace(orig_interface_name,
1096
alt_interface_name))
1097
interface_names.add(alt_interface)
960
.replace("se.recompile.Mandos",
961
"se.bsnet.fukt.Mandos"))
1098
962
# Is this a D-Bus signal?
1099
963
if getattr(attribute, "_dbus_is_signal", False):
1100
# Extract the original non-method undecorated
1101
# function by black magic
964
# Extract the original non-method function by
1102
966
nonmethod_func = (dict(
1103
967
zip(attribute.func_code.co_freevars,
1104
968
attribute.__closure__))["func"]
1115
979
nonmethod_func.func_name,
1116
980
nonmethod_func.func_defaults,
1117
981
nonmethod_func.func_closure)))
1118
# Copy annotations, if any
1120
new_function._dbus_annotations = (
1121
dict(attribute._dbus_annotations))
1122
except AttributeError:
1124
982
# Define a creator of a function to call both the
1125
# original and alternate functions, so both the
1126
# original and alternate signals gets sent when
1127
# the function is called
983
# old and new functions, so both the old and new
984
# signals gets sent when the function is called
1128
985
def fixscope(func1, func2):
1129
986
"""This function is a scope container to pass
1130
987
func1 and func2 to the "call_both" function
1179
1031
attribute.func_name,
1180
1032
attribute.func_defaults,
1181
1033
attribute.func_closure)))
1182
# Copy annotations, if any
1184
attr[attrname]._dbus_annotations = (
1185
dict(attribute._dbus_annotations))
1186
except AttributeError:
1188
# Is this a D-Bus interface?
1189
elif getattr(attribute, "_dbus_is_interface", False):
1190
# Create a new, but exactly alike, function
1191
# object. Decorate it to be a new D-Bus interface
1192
# with the alternate D-Bus interface name. Add it
1194
attr[attrname] = (dbus_interface_annotations
1197
(attribute.func_code,
1198
attribute.func_globals,
1199
attribute.func_name,
1200
attribute.func_defaults,
1201
attribute.func_closure)))
1203
# Deprecate all alternate interfaces
1204
iname="_AlternateDBusNames_interface_annotation{0}"
1205
for interface_name in interface_names:
1206
@dbus_interface_annotations(interface_name)
1208
return { "org.freedesktop.DBus.Deprecated":
1210
# Find an unused name
1211
for aname in (iname.format(i)
1212
for i in itertools.count()):
1213
if aname not in attr:
1217
# Replace the class with a new subclass of it with
1218
# methods, signals, etc. as created above.
1219
cls = type(b"{0}Alternate".format(cls.__name__),
1225
@alternate_dbus_interfaces({"se.recompile.Mandos":
1226
"se.bsnet.fukt.Mandos"})
1034
return type.__new__(mcs, name, bases, attr)
1227
1037
class ClientDBus(Client, DBusObjectWithProperties):
1228
1038
"""A Client class using D-Bus
1559
1364
def Timeout_dbus_property(self, value=None):
1560
1365
if value is None: # get
1561
1366
return dbus.UInt64(self.timeout_milliseconds())
1562
old_timeout = self.timeout
1563
1367
self.timeout = datetime.timedelta(0, 0, 0, value)
1564
# Reschedule disabling
1368
# Reschedule timeout
1565
1369
if self.enabled:
1566
1370
now = datetime.datetime.utcnow()
1567
self.expires += self.timeout - old_timeout
1568
if self.expires <= now:
1371
time_to_die = timedelta_to_milliseconds(
1372
(self.last_checked_ok + self.timeout) - now)
1373
if time_to_die <= 0:
1569
1374
# The timeout has passed
1377
self.expires = (now +
1378
datetime.timedelta(milliseconds =
1572
1380
if (getattr(self, "disable_initiator_tag", None)
1575
1383
gobject.source_remove(self.disable_initiator_tag)
1576
self.disable_initiator_tag = (
1577
gobject.timeout_add(
1578
timedelta_to_milliseconds(self.expires - now),
1384
self.disable_initiator_tag = (gobject.timeout_add
1581
1388
# ExtendedTimeout - property
1582
1389
@dbus_service_property(_interface, signature="t",
1928
1738
use_ipv6: Boolean; to use IPv6 or not
1930
1740
def __init__(self, server_address, RequestHandlerClass,
1931
interface=None, use_ipv6=True, socketfd=None):
1932
"""If socketfd is set, use that file descriptor instead of
1933
creating a new one with socket.socket().
1741
interface=None, use_ipv6=True):
1935
1742
self.interface = interface
1937
1744
self.address_family = socket.AF_INET6
1938
if socketfd is not None:
1939
# Save the file descriptor
1940
self.socketfd = socketfd
1941
# Save the original socket.socket() function
1942
self.socket_socket = socket.socket
1943
# To implement --socket, we monkey patch socket.socket.
1945
# (When socketserver.TCPServer is a new-style class, we
1946
# could make self.socket into a property instead of monkey
1947
# patching socket.socket.)
1949
# Create a one-time-only replacement for socket.socket()
1950
@functools.wraps(socket.socket)
1951
def socket_wrapper(*args, **kwargs):
1952
# Restore original function so subsequent calls are
1954
socket.socket = self.socket_socket
1955
del self.socket_socket
1956
# This time only, return a new socket object from the
1957
# saved file descriptor.
1958
return socket.fromfd(self.socketfd, *args, **kwargs)
1959
# Replace socket.socket() function with wrapper
1960
socket.socket = socket_wrapper
1961
# The socketserver.TCPServer.__init__ will call
1962
# socket.socket(), which might be our replacement,
1963
# socket_wrapper(), if socketfd was set.
1964
1745
socketserver.TCPServer.__init__(self, server_address,
1965
1746
RequestHandlerClass)
1967
1747
def server_bind(self):
1968
1748
"""This overrides the normal server_bind() function
1969
1749
to bind to an interface if one was specified, and also NOT to
1978
1758
self.socket.setsockopt(socket.SOL_SOCKET,
1979
1759
SO_BINDTODEVICE,
1980
str(self.interface + '\0'))
1981
1762
except socket.error as error:
1982
if error.errno == errno.EPERM:
1983
logger.error("No permission to bind to"
1984
" interface %s", self.interface)
1985
elif error.errno == errno.ENOPROTOOPT:
1763
if error[0] == errno.EPERM:
1764
logger.error("No permission to"
1765
" bind to interface %s",
1767
elif error[0] == errno.ENOPROTOOPT:
1986
1768
logger.error("SO_BINDTODEVICE not available;"
1987
1769
" cannot bind to interface %s",
1988
1770
self.interface)
1989
elif error.errno == errno.ENODEV:
1990
logger.error("Interface %s does not exist,"
1991
" cannot bind", self.interface)
1994
1773
# Only bind(2) the socket if we really need to.
2055
1833
def handle_ipc(self, source, condition, parent_pipe=None,
2056
1834
proc = None, client_object=None):
1836
gobject.IO_IN: "IN", # There is data to read.
1837
gobject.IO_OUT: "OUT", # Data can be written (without
1839
gobject.IO_PRI: "PRI", # There is urgent data to read.
1840
gobject.IO_ERR: "ERR", # Error condition.
1841
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1842
# broken, usually for pipes and
1845
conditions_string = ' | '.join(name
1847
condition_names.iteritems()
1848
if cond & condition)
2057
1849
# error, or the other end of multiprocessing.Pipe has closed
2058
if condition & (gobject.IO_ERR | gobject.IO_HUP):
1850
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2059
1851
# Wait for other process to exit
2122
def rfc3339_duration_to_delta(duration):
2123
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2125
>>> rfc3339_duration_to_delta("P7D")
2126
datetime.timedelta(7)
2127
>>> rfc3339_duration_to_delta("PT60S")
2128
datetime.timedelta(0, 60)
2129
>>> rfc3339_duration_to_delta("PT60M")
2130
datetime.timedelta(0, 3600)
2131
>>> rfc3339_duration_to_delta("PT24H")
2132
datetime.timedelta(1)
2133
>>> rfc3339_duration_to_delta("P1W")
2134
datetime.timedelta(7)
2135
>>> rfc3339_duration_to_delta("PT5M30S")
2136
datetime.timedelta(0, 330)
2137
>>> rfc3339_duration_to_delta("P1DT3M20S")
2138
datetime.timedelta(1, 200)
2141
# Parsing an RFC 3339 duration with regular expressions is not
2142
# possible - there would have to be multiple places for the same
2143
# values, like seconds. The current code, while more esoteric, is
2144
# cleaner without depending on a parsing library. If Python had a
2145
# built-in library for parsing we would use it, but we'd like to
2146
# avoid excessive use of external libraries.
2148
# New type for defining tokens, syntax, and semantics all-in-one
2149
Token = collections.namedtuple("Token",
2150
("regexp", # To match token; if
2151
# "value" is not None,
2152
# must have a "group"
2154
"value", # datetime.timedelta or
2156
"followers")) # Tokens valid after
2158
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2159
# the "duration" ABNF definition in RFC 3339, Appendix A.
2160
token_end = Token(re.compile(r"$"), None, frozenset())
2161
token_second = Token(re.compile(r"(\d+)S"),
2162
datetime.timedelta(seconds=1),
2163
frozenset((token_end,)))
2164
token_minute = Token(re.compile(r"(\d+)M"),
2165
datetime.timedelta(minutes=1),
2166
frozenset((token_second, token_end)))
2167
token_hour = Token(re.compile(r"(\d+)H"),
2168
datetime.timedelta(hours=1),
2169
frozenset((token_minute, token_end)))
2170
token_time = Token(re.compile(r"T"),
2172
frozenset((token_hour, token_minute,
2174
token_day = Token(re.compile(r"(\d+)D"),
2175
datetime.timedelta(days=1),
2176
frozenset((token_time, token_end)))
2177
token_month = Token(re.compile(r"(\d+)M"),
2178
datetime.timedelta(weeks=4),
2179
frozenset((token_day, token_end)))
2180
token_year = Token(re.compile(r"(\d+)Y"),
2181
datetime.timedelta(weeks=52),
2182
frozenset((token_month, token_end)))
2183
token_week = Token(re.compile(r"(\d+)W"),
2184
datetime.timedelta(weeks=1),
2185
frozenset((token_end,)))
2186
token_duration = Token(re.compile(r"P"), None,
2187
frozenset((token_year, token_month,
2188
token_day, token_time,
2190
# Define starting values
2191
value = datetime.timedelta() # Value so far
2193
followers = frozenset(token_duration,) # Following valid tokens
2194
s = duration # String left to parse
2195
# Loop until end token is found
2196
while found_token is not token_end:
2197
# Search for any currently valid tokens
2198
for token in followers:
2199
match = token.regexp.match(s)
2200
if match is not None:
2202
if token.value is not None:
2203
# Value found, parse digits
2204
factor = int(match.group(1), 10)
2205
# Add to value so far
2206
value += factor * token.value
2207
# Strip token from string
2208
s = token.regexp.sub("", s, 1)
2211
# Set valid next tokens
2212
followers = found_token.followers
2215
# No currently valid tokens were found
2216
raise ValueError("Invalid RFC 3339 duration")
2221
1914
def string_to_delta(interval):
2222
1915
"""Parse a string and return a datetime.timedelta
2322
2008
parser.add_argument("--no-dbus", action="store_false",
2323
2009
dest="use_dbus", help="Do not provide D-Bus"
2324
" system bus interface", default=None)
2010
" system bus interface")
2325
2011
parser.add_argument("--no-ipv6", action="store_false",
2326
dest="use_ipv6", help="Do not use IPv6",
2012
dest="use_ipv6", help="Do not use IPv6")
2328
2013
parser.add_argument("--no-restore", action="store_false",
2329
2014
dest="restore", help="Do not restore stored"
2330
" state", default=None)
2331
parser.add_argument("--socket", type=int,
2332
help="Specify a file descriptor to a network"
2333
" socket to use instead of creating one")
2334
2016
parser.add_argument("--statedir", metavar="DIR",
2335
2017
help="Directory to save/restore state in")
2336
parser.add_argument("--foreground", action="store_true",
2337
help="Run in foreground", default=None)
2339
2019
options = parser.parse_args()
2368
2046
# Convert the SafeConfigParser object to a dict
2369
2047
server_settings = server_config.defaults()
2370
2048
# Use the appropriate methods on the non-string config options
2371
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2049
for option in ("debug", "use_dbus", "use_ipv6"):
2372
2050
server_settings[option] = server_config.getboolean("DEFAULT",
2374
2052
if server_settings["port"]:
2375
2053
server_settings["port"] = server_config.getint("DEFAULT",
2377
if server_settings["socket"]:
2378
server_settings["socket"] = server_config.getint("DEFAULT",
2380
# Later, stdin will, and stdout and stderr might, be dup'ed
2381
# over with an opened os.devnull. But we don't want this to
2382
# happen with a supplied network socket.
2383
if 0 <= server_settings["socket"] <= 2:
2384
server_settings["socket"] = os.dup(server_settings
2386
2055
del server_config
2388
2057
# Override the settings from the config file with command line
2452
2112
use_ipv6=use_ipv6,
2453
2113
gnutls_priority=
2454
2114
server_settings["priority"],
2456
socketfd=(server_settings["socket"]
2459
pidfilename = "/run/mandos.pid"
2117
pidfilename = "/var/run/mandos.pid"
2462
2119
pidfile = open(pidfilename, "w")
2463
except IOError as e:
2464
logger.error("Could not open file %r", pidfilename,
2121
logger.error("Could not open file %r", pidfilename)
2467
for name in ("_mandos", "mandos", "nobody"):
2124
uid = pwd.getpwnam("_mandos").pw_uid
2125
gid = pwd.getpwnam("_mandos").pw_gid
2469
uid = pwd.getpwnam(name).pw_uid
2470
gid = pwd.getpwnam(name).pw_gid
2128
uid = pwd.getpwnam("mandos").pw_uid
2129
gid = pwd.getpwnam("mandos").pw_gid
2472
2130
except KeyError:
2132
uid = pwd.getpwnam("nobody").pw_uid
2133
gid = pwd.getpwnam("nobody").pw_gid
2480
2140
except OSError as error:
2481
if error.errno != errno.EPERM:
2141
if error[0] != errno.EPERM:
2496
2156
.gnutls_global_set_log_function(debug_gnutls))
2498
2158
# Redirect stdin so all checkers get /dev/null
2499
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2159
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2500
2160
os.dup2(null, sys.stdin.fileno())
2504
2164
# Need to fork before connecting to D-Bus
2506
2166
# Close all input and output, do double fork, etc.
2509
# multiprocessing will use threads, so before we use gobject we
2510
# need to inform gobject that threads will be used.
2511
2169
gobject.threads_init()
2513
2171
global main_loop
2514
2172
# From the Avahi example code
2515
DBusGMainLoop(set_as_default=True)
2173
DBusGMainLoop(set_as_default=True )
2516
2174
main_loop = gobject.MainLoop()
2517
2175
bus = dbus.SystemBus()
2518
2176
# End of Avahi example code
2564
2215
(stored_state))
2565
2216
os.remove(stored_state_path)
2566
2217
except IOError as e:
2567
if e.errno == errno.ENOENT:
2568
logger.warning("Could not load persistent state: {0}"
2569
.format(os.strerror(e.errno)))
2571
logger.critical("Could not load persistent state:",
2218
logger.warning("Could not load persistent state: {0}"
2220
if e.errno != errno.ENOENT:
2574
2222
except EOFError as e:
2575
2223
logger.warning("Could not load persistent state: "
2576
"EOFError:", exc_info=e)
2224
"EOFError: {0}".format(e))
2578
2226
with PGPEngine() as pgp:
2579
2227
for client_name, client in clients_data.iteritems():
2580
# Skip removed clients
2581
if client_name not in client_settings:
2584
2228
# Decide which value to use after restoring saved state.
2585
2229
# We have three different values: Old config file,
2586
2230
# new config file, and saved state.
2644
2289
for client_name in (set(client_settings)
2645
2290
- set(old_client_settings)):
2646
2291
clients_data[client_name] = client_settings[client_name]
2648
2293
# Create all client objects
2649
2294
for client_name, client in clients_data.iteritems():
2650
2295
tcp_server.clients[client_name] = client_class(
2651
name = client_name, settings = client,
2652
server_settings = server_settings)
2296
name = client_name, settings = client)
2654
2298
if not tcp_server.clients:
2655
2299
logger.warning("No clients defined")
2658
if pidfile is not None:
2662
pidfile.write(str(pid) + "\n".encode("utf-8"))
2664
logger.error("Could not write to file %r with PID %d",
2305
pidfile.write(str(pid) + "\n".encode("utf-8"))
2308
logger.error("Could not write to file %r with PID %d",
2311
# "pidfile" was never created
2667
2313
del pidfilename
2314
signal.signal(signal.SIGINT, signal.SIG_IGN)
2669
2316
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2670
2317
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2673
@alternate_dbus_interfaces({"se.recompile.Mandos":
2674
"se.bsnet.fukt.Mandos"})
2675
class MandosDBusService(DBusObjectWithProperties):
2320
class MandosDBusService(dbus.service.Object):
2676
2321
"""A D-Bus proxy object"""
2677
2322
def __init__(self):
2678
2323
dbus.service.Object.__init__(self, bus, "/")
2679
2324
_interface = "se.recompile.Mandos"
2681
@dbus_interface_annotations(_interface)
2683
return { "org.freedesktop.DBus.Property"
2684
".EmitsChangedSignal":
2687
2326
@dbus.service.signal(_interface, signature="o")
2688
2327
def ClientAdded(self, objpath):
2771
2411
del client_settings[client.name]["secret"]
2774
with (tempfile.NamedTemporaryFile
2775
(mode='wb', suffix=".pickle", prefix='clients-',
2776
dir=os.path.dirname(stored_state_path),
2777
delete=False)) as stored_state:
2414
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2417
(stored_state_path))
2418
with os.fdopen(tempfd, "wb") as stored_state:
2778
2419
pickle.dump((clients, client_settings), stored_state)
2779
tempname=stored_state.name
2780
2420
os.rename(tempname, stored_state_path)
2781
2421
except (IOError, OSError) as e:
2422
logger.warning("Could not save persistent state: {0}"
2784
2426
os.remove(tempname)
2785
2427
except NameError:
2787
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2788
logger.warning("Could not save persistent state: {0}"
2789
.format(os.strerror(e.errno)))
2791
logger.warning("Could not save persistent state:",
2429
if e.errno not in set((errno.ENOENT, errno.EACCES,
2795
2433
# Delete all clients, and settings from config
2823
2461
service.port = tcp_server.socket.getsockname()[1]
2825
2463
logger.info("Now listening on address %r, port %d,"
2826
" flowinfo %d, scope_id %d",
2827
*tcp_server.socket.getsockname())
2464
" flowinfo %d, scope_id %d"
2465
% tcp_server.socket.getsockname())
2829
logger.info("Now listening on address %r, port %d",
2830
*tcp_server.socket.getsockname())
2467
logger.info("Now listening on address %r, port %d"
2468
% tcp_server.socket.getsockname())
2832
2470
#service.interface = tcp_server.socket.getsockname()[3]