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- Committer: Teddy Hogeborn
- Date: 2009-04-01 03:37:45 UTC
- Revision ID: teddy@fukt.bsnet.se-20090401033745-c89k6bij5opdm1rk
* mandos (ClientDBus.__del__): Bug fix: Correct mispasted code, and do
not try to call
dbus.service.Object.__del__() if it
does not exist.
(ClientDBus.start_checker): Simplify logic.
not try to call
dbus.service.Object.__del__() if it
does not exist.
(ClientDBus.start_checker): Simplify logic.
- files removed:
- dbus-mandos.conf
- files modified:
- Makefile
added
removed
mandos
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
# methods "add", "remove", "server_state_changed",
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
# "AvahiService" class, and some lines in "main".
9
# methods "add" and "remove" in the "AvahiService" class, the
10
# "server_state_changed" and "entry_group_state_changed" functions,
11
# and some lines in "main".
12
12
#
13
13
# Everything else is
14
14
# Copyright © 2008,2009 Teddy Hogeborn
33
33
34
34
from __future__ import division, with_statement, absolute_import
35
35
36
import SocketServer as socketserver
36
import SocketServer
37
37
import socket
38
38
import optparse
39
39
import datetime
44
44
import gnutls.library.functions
45
45
import gnutls.library.constants
46
46
import gnutls.library.types
47
import ConfigParser as configparser
47
import ConfigParser
48
48
import sys
49
49
import re
50
50
import os
51
51
import signal
52
from sets import Set
52
53
import subprocess
53
54
import atexit
54
55
import stat
55
56
import logging
56
57
import logging.handlers
57
58
import pwd
58
import contextlib
59
import struct
60
import fcntl
61
import functools
62
import cPickle as pickle
59
from contextlib import closing
63
60
64
61
import dbus
65
62
import dbus.service
68
65
from dbus.mainloop.glib import DBusGMainLoop
69
66
import ctypes
70
67
import ctypes.util
71
import xml.dom.minidom
72
import inspect
73
74
try:
75
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
76
except AttributeError:
77
try:
78
from IN import SO_BINDTODEVICE
79
except ImportError:
80
SO_BINDTODEVICE = None
81
82
83
version = "1.0.14"
84
85
logger = logging.Logger(u'mandos')
68
69
version = "1.0.8"
70
71
logger = logging.Logger('mandos')
86
72
syslogger = (logging.handlers.SysLogHandler
87
73
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
88
74
address = "/dev/log"))
89
75
syslogger.setFormatter(logging.Formatter
90
(u'Mandos [%(process)d]: %(levelname)s:'
91
u' %(message)s'))
76
('Mandos [%(process)d]: %(levelname)s:'
77
' %(message)s'))
92
78
logger.addHandler(syslogger)
93
79
94
80
console = logging.StreamHandler()
95
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
96
u' %(levelname)s:'
97
u' %(message)s'))
81
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
82
' %(levelname)s: %(message)s'))
98
83
logger.addHandler(console)
99
84
100
85
class AvahiError(Exception):
113
98
114
99
class AvahiService(object):
115
100
"""An Avahi (Zeroconf) service.
116
117
101
Attributes:
118
102
interface: integer; avahi.IF_UNSPEC or an interface index.
119
103
Used to optionally bind to the specified interface.
120
name: string; Example: u'Mandos'
121
type: string; Example: u'_mandos._tcp'.
104
name: string; Example: 'Mandos'
105
type: string; Example: '_mandos._tcp'.
122
106
See <http://www.dns-sd.org/ServiceTypes.html>
123
107
port: integer; what port to announce
124
108
TXT: list of strings; TXT record for the service
127
111
max_renames: integer; maximum number of renames
128
112
rename_count: integer; counter so we only rename after collisions
129
113
a sensible number of times
130
group: D-Bus Entry Group
131
server: D-Bus Server
132
bus: dbus.SystemBus()
133
114
"""
134
115
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
135
116
servicetype = None, port = None, TXT = None,
136
domain = u"", host = u"", max_renames = 32768,
137
protocol = avahi.PROTO_UNSPEC, bus = None):
117
domain = "", host = "", max_renames = 32768,
118
protocol = avahi.PROTO_UNSPEC):
138
119
self.interface = interface
139
120
self.name = name
140
121
self.type = servicetype
145
126
self.rename_count = 0
146
127
self.max_renames = max_renames
147
128
self.protocol = protocol
148
self.group = None # our entry group
149
self.server = None
150
self.bus = bus
151
129
def rename(self):
152
130
"""Derived from the Avahi example code"""
153
131
if self.rename_count >= self.max_renames:
155
133
u" after %i retries, exiting.",
156
134
self.rename_count)
157
135
raise AvahiServiceError(u"Too many renames")
158
self.name = self.server.GetAlternativeServiceName(self.name)
136
self.name = server.GetAlternativeServiceName(self.name)
159
137
logger.info(u"Changing Zeroconf service name to %r ...",
160
unicode(self.name))
138
str(self.name))
161
139
syslogger.setFormatter(logging.Formatter
162
(u'Mandos (%s) [%%(process)d]:'
163
u' %%(levelname)s: %%(message)s'
140
('Mandos (%s) [%%(process)d]:'
141
' %%(levelname)s: %%(message)s'
164
142
% self.name))
165
143
self.remove()
166
144
self.add()
167
145
self.rename_count += 1
168
146
def remove(self):
169
147
"""Derived from the Avahi example code"""
170
if self.group is not None:
171
self.group.Reset()
148
if group is not None:
149
group.Reset()
172
150
def add(self):
173
151
"""Derived from the Avahi example code"""
174
if self.group is None:
175
self.group = dbus.Interface(
176
self.bus.get_object(avahi.DBUS_NAME,
177
self.server.EntryGroupNew()),
178
avahi.DBUS_INTERFACE_ENTRY_GROUP)
179
self.group.connect_to_signal('StateChanged',
180
self
181
.entry_group_state_changed)
152
global group
153
if group is None:
154
group = dbus.Interface(bus.get_object
155
(avahi.DBUS_NAME,
156
server.EntryGroupNew()),
157
avahi.DBUS_INTERFACE_ENTRY_GROUP)
158
group.connect_to_signal('StateChanged',
159
entry_group_state_changed)
182
160
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
183
self.name, self.type)
184
self.group.AddService(
185
self.interface,
186
self.protocol,
187
dbus.UInt32(0), # flags
188
self.name, self.type,
189
self.domain, self.host,
190
dbus.UInt16(self.port),
191
avahi.string_array_to_txt_array(self.TXT))
192
self.group.Commit()
193
def entry_group_state_changed(self, state, error):
194
"""Derived from the Avahi example code"""
195
logger.debug(u"Avahi state change: %i", state)
196
197
if state == avahi.ENTRY_GROUP_ESTABLISHED:
198
logger.debug(u"Zeroconf service established.")
199
elif state == avahi.ENTRY_GROUP_COLLISION:
200
logger.warning(u"Zeroconf service name collision.")
201
self.rename()
202
elif state == avahi.ENTRY_GROUP_FAILURE:
203
logger.critical(u"Avahi: Error in group state changed %s",
204
unicode(error))
205
raise AvahiGroupError(u"State changed: %s"
206
% unicode(error))
207
def cleanup(self):
208
"""Derived from the Avahi example code"""
209
if self.group is not None:
210
self.group.Free()
211
self.group = None
212
def server_state_changed(self, state):
213
"""Derived from the Avahi example code"""
214
if state == avahi.SERVER_COLLISION:
215
logger.error(u"Zeroconf server name collision")
216
self.remove()
217
elif state == avahi.SERVER_RUNNING:
218
self.add()
219
def activate(self):
220
"""Derived from the Avahi example code"""
221
if self.server is None:
222
self.server = dbus.Interface(
223
self.bus.get_object(avahi.DBUS_NAME,
224
avahi.DBUS_PATH_SERVER),
225
avahi.DBUS_INTERFACE_SERVER)
226
self.server.connect_to_signal(u"StateChanged",
227
self.server_state_changed)
228
self.server_state_changed(self.server.GetState())
161
service.name, service.type)
162
group.AddService(
163
self.interface, # interface
164
self.protocol, # protocol
165
dbus.UInt32(0), # flags
166
self.name, self.type,
167
self.domain, self.host,
168
dbus.UInt16(self.port),
169
avahi.string_array_to_txt_array(self.TXT))
170
group.Commit()
171
172
# From the Avahi example code:
173
group = None # our entry group
174
# End of Avahi example code
175
176
177
def _datetime_to_dbus(dt, variant_level=0):
178
"""Convert a UTC datetime.datetime() to a D-Bus type."""
179
return dbus.String(dt.isoformat(), variant_level=variant_level)
229
180
230
181
231
182
class Client(object):
232
183
"""A representation of a client host served by this server.
233
234
184
Attributes:
235
185
name: string; from the config file, used in log messages and
236
186
D-Bus identifiers
243
193
enabled: bool()
244
194
last_checked_ok: datetime.datetime(); (UTC) or None
245
195
timeout: datetime.timedelta(); How long from last_checked_ok
246
until this client is disabled
196
until this client is invalid
247
197
interval: datetime.timedelta(); How often to start a new checker
248
198
disable_hook: If set, called by disable() as disable_hook(self)
249
199
checker: subprocess.Popen(); a running checker process used
250
200
to see if the client lives.
251
201
'None' if no process is running.
252
202
checker_initiator_tag: a gobject event source tag, or None
253
disable_initiator_tag: - '' -
203
disable_initiator_tag: - '' -
254
204
checker_callback_tag: - '' -
255
205
checker_command: string; External command which is run to check if
256
206
client lives. %() expansions are done at
258
208
instance %(name)s can be used in the command.
259
209
current_checker_command: string; current running checker_command
260
210
"""
261
262
@staticmethod
263
def _timedelta_to_milliseconds(td):
264
"Convert a datetime.timedelta() to milliseconds"
265
return ((td.days * 24 * 60 * 60 * 1000)
266
+ (td.seconds * 1000)
267
+ (td.microseconds // 1000))
268
269
211
def timeout_milliseconds(self):
270
212
"Return the 'timeout' attribute in milliseconds"
271
return self._timedelta_to_milliseconds(self.timeout)
213
return ((self.timeout.days * 24 * 60 * 60 * 1000)
214
+ (self.timeout.seconds * 1000)
215
+ (self.timeout.microseconds // 1000))
272
216
273
217
def interval_milliseconds(self):
274
218
"Return the 'interval' attribute in milliseconds"
275
return self._timedelta_to_milliseconds(self.interval)
219
return ((self.interval.days * 24 * 60 * 60 * 1000)
220
+ (self.interval.seconds * 1000)
221
+ (self.interval.microseconds // 1000))
276
222
277
223
def __init__(self, name = None, disable_hook=None, config=None):
278
224
"""Note: the 'checker' key in 'config' sets the
285
231
# Uppercase and remove spaces from fingerprint for later
286
232
# comparison purposes with return value from the fingerprint()
287
233
# function
288
self.fingerprint = (config[u"fingerprint"].upper()
234
self.fingerprint = (config["fingerprint"].upper()
289
235
.replace(u" ", u""))
290
236
logger.debug(u" Fingerprint: %s", self.fingerprint)
291
if u"secret" in config:
292
self.secret = config[u"secret"].decode(u"base64")
293
elif u"secfile" in config:
294
with open(os.path.expanduser(os.path.expandvars
295
(config[u"secfile"])),
296
"rb") as secfile:
237
if "secret" in config:
238
self.secret = config["secret"].decode(u"base64")
239
elif "secfile" in config:
240
with closing(open(os.path.expanduser
241
(os.path.expandvars
242
(config["secfile"])))) as secfile:
297
243
self.secret = secfile.read()
298
244
else:
299
245
raise TypeError(u"No secret or secfile for client %s"
300
246
% self.name)
301
self.host = config.get(u"host", u"")
247
self.host = config.get("host", "")
302
248
self.created = datetime.datetime.utcnow()
303
249
self.enabled = False
304
250
self.last_enabled = None
305
251
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
252
self.timeout = string_to_delta(config["timeout"])
253
self.interval = string_to_delta(config["interval"])
308
254
self.disable_hook = disable_hook
309
255
self.checker = None
310
256
self.checker_initiator_tag = None
311
257
self.disable_initiator_tag = None
312
258
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
259
self.checker_command = config["checker"]
314
260
self.current_checker_command = None
315
261
self.last_connect = None
316
262
317
263
def enable(self):
318
264
"""Start this client's checker and timeout hooks"""
319
if getattr(self, u"enabled", False):
320
# Already enabled
321
return
322
265
self.last_enabled = datetime.datetime.utcnow()
323
266
# Schedule a new checker to be started an 'interval' from now,
324
267
# and every interval from then on.
325
268
self.checker_initiator_tag = (gobject.timeout_add
326
269
(self.interval_milliseconds(),
327
270
self.start_checker))
271
# Also start a new checker *right now*.
272
self.start_checker()
328
273
# Schedule a disable() when 'timeout' has passed
329
274
self.disable_initiator_tag = (gobject.timeout_add
330
275
(self.timeout_milliseconds(),
331
276
self.disable))
332
277
self.enabled = True
333
# Also start a new checker *right now*.
334
self.start_checker()
335
278
336
def disable(self, quiet=True):
279
def disable(self):
337
280
"""Disable this client."""
338
281
if not getattr(self, "enabled", False):
339
282
return False
340
if not quiet:
341
logger.info(u"Disabling client %s", self.name)
342
if getattr(self, u"disable_initiator_tag", False):
283
logger.info(u"Disabling client %s", self.name)
284
if getattr(self, "disable_initiator_tag", False):
343
285
gobject.source_remove(self.disable_initiator_tag)
344
286
self.disable_initiator_tag = None
345
if getattr(self, u"checker_initiator_tag", False):
287
if getattr(self, "checker_initiator_tag", False):
346
288
gobject.source_remove(self.checker_initiator_tag)
347
289
self.checker_initiator_tag = None
348
290
self.stop_checker()
375
317
376
318
def checked_ok(self):
377
319
"""Bump up the timeout for this client.
378
379
320
This should only be called when the client has been seen,
380
321
alive and well.
381
322
"""
387
328
388
329
def start_checker(self):
389
330
"""Start a new checker subprocess if one is not running.
390
391
331
If a checker already exists, leave it running and do
392
332
nothing."""
393
333
# The reason for not killing a running checker is that if we
396
336
# client would inevitably timeout, since no checker would get
397
337
# a chance to run to completion. If we instead leave running
398
338
# checkers alone, the checker would have to take more time
399
# than 'timeout' for the client to be disabled, which is as it
400
# should be.
339
# than 'timeout' for the client to be declared invalid, which
340
# is as it should be.
401
341
402
342
# If a checker exists, make sure it is not a zombie
403
try:
343
if self.checker is not None:
404
344
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
405
except (AttributeError, OSError), error:
406
if (isinstance(error, OSError)
407
and error.errno != errno.ECHILD):
408
raise error
409
else:
410
345
if pid:
411
logger.warning(u"Checker was a zombie")
346
logger.warning("Checker was a zombie")
412
347
gobject.source_remove(self.checker_callback_tag)
413
348
self.checker_callback(pid, status,
414
349
self.current_checker_command)
419
354
command = self.checker_command % self.host
420
355
except TypeError:
421
356
# Escape attributes for the shell
422
escaped_attrs = dict((key,
423
re.escape(unicode(str(val),
424
errors=
425
u'replace')))
357
escaped_attrs = dict((key, re.escape(str(val)))
426
358
for key, val in
427
359
vars(self).iteritems())
428
360
try:
441
373
# always replaced by /dev/null.)
442
374
self.checker = subprocess.Popen(command,
443
375
close_fds=True,
444
shell=True, cwd=u"/")
376
shell=True, cwd="/")
445
377
self.checker_callback_tag = (gobject.child_watch_add
446
378
(self.checker.pid,
447
379
self.checker_callback,
463
395
if self.checker_callback_tag:
464
396
gobject.source_remove(self.checker_callback_tag)
465
397
self.checker_callback_tag = None
466
if getattr(self, u"checker", None) is None:
398
if getattr(self, "checker", None) is None:
467
399
return
468
400
logger.debug(u"Stopping checker for %(name)s", vars(self))
469
401
try:
470
402
os.kill(self.checker.pid, signal.SIGTERM)
471
#time.sleep(0.5)
403
#os.sleep(0.5)
472
404
#if self.checker.poll() is None:
473
405
# os.kill(self.checker.pid, signal.SIGKILL)
474
406
except OSError, error:
475
407
if error.errno != errno.ESRCH: # No such process
476
408
raise
477
409
self.checker = None
478
479
480
def dbus_service_property(dbus_interface, signature=u"v",
481
access=u"readwrite", byte_arrays=False):
482
"""Decorators for marking methods of a DBusObjectWithProperties to
483
become properties on the D-Bus.
484
485
The decorated method will be called with no arguments by "Get"
486
and with one argument by "Set".
487
488
The parameters, where they are supported, are the same as
489
dbus.service.method, except there is only "signature", since the
490
type from Get() and the type sent to Set() is the same.
491
"""
492
# Encoding deeply encoded byte arrays is not supported yet by the
493
# "Set" method, so we fail early here:
494
if byte_arrays and signature != u"ay":
495
raise ValueError(u"Byte arrays not supported for non-'ay'"
496
u" signature %r" % signature)
497
def decorator(func):
498
func._dbus_is_property = True
499
func._dbus_interface = dbus_interface
500
func._dbus_signature = signature
501
func._dbus_access = access
502
func._dbus_name = func.__name__
503
if func._dbus_name.endswith(u"_dbus_property"):
504
func._dbus_name = func._dbus_name[:-14]
505
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
506
return func
507
return decorator
508
509
510
class DBusPropertyException(dbus.exceptions.DBusException):
511
"""A base class for D-Bus property-related exceptions
512
"""
513
def __unicode__(self):
514
return unicode(str(self))
515
516
517
class DBusPropertyAccessException(DBusPropertyException):
518
"""A property's access permissions disallows an operation.
519
"""
520
pass
521
522
523
class DBusPropertyNotFound(DBusPropertyException):
524
"""An attempt was made to access a non-existing property.
525
"""
526
pass
527
528
529
class DBusObjectWithProperties(dbus.service.Object):
530
"""A D-Bus object with properties.
531
532
Classes inheriting from this can use the dbus_service_property
533
decorator to expose methods as D-Bus properties. It exposes the
534
standard Get(), Set(), and GetAll() methods on the D-Bus.
535
"""
536
537
@staticmethod
538
def _is_dbus_property(obj):
539
return getattr(obj, u"_dbus_is_property", False)
540
541
def _get_all_dbus_properties(self):
542
"""Returns a generator of (name, attribute) pairs
543
"""
544
return ((prop._dbus_name, prop)
545
for name, prop in
546
inspect.getmembers(self, self._is_dbus_property))
547
548
def _get_dbus_property(self, interface_name, property_name):
549
"""Returns a bound method if one exists which is a D-Bus
550
property with the specified name and interface.
551
"""
552
for name in (property_name,
553
property_name + u"_dbus_property"):
554
prop = getattr(self, name, None)
555
if (prop is None
556
or not self._is_dbus_property(prop)
557
or prop._dbus_name != property_name
558
or (interface_name and prop._dbus_interface
559
and interface_name != prop._dbus_interface)):
560
continue
561
return prop
562
# No such property
563
raise DBusPropertyNotFound(self.dbus_object_path + u":"
564
+ interface_name + u"."
565
+ property_name)
566
567
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
568
out_signature=u"v")
569
def Get(self, interface_name, property_name):
570
"""Standard D-Bus property Get() method, see D-Bus standard.
571
"""
572
prop = self._get_dbus_property(interface_name, property_name)
573
if prop._dbus_access == u"write":
574
raise DBusPropertyAccessException(property_name)
575
value = prop()
576
if not hasattr(value, u"variant_level"):
577
return value
578
return type(value)(value, variant_level=value.variant_level+1)
579
580
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
581
def Set(self, interface_name, property_name, value):
582
"""Standard D-Bus property Set() method, see D-Bus standard.
583
"""
584
prop = self._get_dbus_property(interface_name, property_name)
585
if prop._dbus_access == u"read":
586
raise DBusPropertyAccessException(property_name)
587
if prop._dbus_get_args_options[u"byte_arrays"]:
588
# The byte_arrays option is not supported yet on
589
# signatures other than "ay".
590
if prop._dbus_signature != u"ay":
591
raise ValueError
592
value = dbus.ByteArray(''.join(unichr(byte)
593
for byte in value))
594
prop(value)
595
596
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
597
out_signature=u"a{sv}")
598
def GetAll(self, interface_name):
599
"""Standard D-Bus property GetAll() method, see D-Bus
600
standard.
601
602
Note: Will not include properties with access="write".
603
"""
604
all = {}
605
for name, prop in self._get_all_dbus_properties():
606
if (interface_name
607
and interface_name != prop._dbus_interface):
608
# Interface non-empty but did not match
609
continue
610
# Ignore write-only properties
611
if prop._dbus_access == u"write":
612
continue
613
value = prop()
614
if not hasattr(value, u"variant_level"):
615
all[name] = value
616
continue
617
all[name] = type(value)(value, variant_level=
618
value.variant_level+1)
619
return dbus.Dictionary(all, signature=u"sv")
620
621
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
622
out_signature=u"s",
623
path_keyword='object_path',
624
connection_keyword='connection')
625
def Introspect(self, object_path, connection):
626
"""Standard D-Bus method, overloaded to insert property tags.
627
"""
628
xmlstring = dbus.service.Object.Introspect(self, object_path,
629
connection)
630
try:
631
document = xml.dom.minidom.parseString(xmlstring)
632
def make_tag(document, name, prop):
633
e = document.createElement(u"property")
634
e.setAttribute(u"name", name)
635
e.setAttribute(u"type", prop._dbus_signature)
636
e.setAttribute(u"access", prop._dbus_access)
637
return e
638
for if_tag in document.getElementsByTagName(u"interface"):
639
for tag in (make_tag(document, name, prop)
640
for name, prop
641
in self._get_all_dbus_properties()
642
if prop._dbus_interface
643
== if_tag.getAttribute(u"name")):
644
if_tag.appendChild(tag)
645
# Add the names to the return values for the
646
# "org.freedesktop.DBus.Properties" methods
647
if (if_tag.getAttribute(u"name")
648
== u"org.freedesktop.DBus.Properties"):
649
for cn in if_tag.getElementsByTagName(u"method"):
650
if cn.getAttribute(u"name") == u"Get":
651
for arg in cn.getElementsByTagName(u"arg"):
652
if (arg.getAttribute(u"direction")
653
== u"out"):
654
arg.setAttribute(u"name", u"value")
655
elif cn.getAttribute(u"name") == u"GetAll":
656
for arg in cn.getElementsByTagName(u"arg"):
657
if (arg.getAttribute(u"direction")
658
== u"out"):
659
arg.setAttribute(u"name", u"props")
660
xmlstring = document.toxml(u"utf-8")
661
document.unlink()
662
except (AttributeError, xml.dom.DOMException,
663
xml.parsers.expat.ExpatError), error:
664
logger.error(u"Failed to override Introspection method",
665
error)
666
return xmlstring
667
668
669
class ClientDBus(Client, DBusObjectWithProperties):
410
411
def still_valid(self):
412
"""Has the timeout not yet passed for this client?"""
413
if not getattr(self, "enabled", False):
414
return False
415
now = datetime.datetime.utcnow()
416
if self.last_checked_ok is None:
417
return now < (self.created + self.timeout)
418
else:
419
return now < (self.last_checked_ok + self.timeout)
420
421
422
class ClientDBus(Client, dbus.service.Object):
670
423
"""A Client class using D-Bus
671
672
424
Attributes:
673
dbus_object_path: dbus.ObjectPath
674
bus: dbus.SystemBus()
425
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
675
426
"""
676
427
# dbus.service.Object doesn't use super(), so we can't either.
677
428
678
def __init__(self, bus = None, *args, **kwargs):
679
self.bus = bus
429
def __init__(self, *args, **kwargs):
680
430
Client.__init__(self, *args, **kwargs)
681
431
# Only now, when this client is initialized, can it show up on
682
432
# the D-Bus
683
433
self.dbus_object_path = (dbus.ObjectPath
684
(u"/clients/"
685
+ self.name.replace(u".", u"_")))
686
DBusObjectWithProperties.__init__(self, self.bus,
687
self.dbus_object_path)
688
689
@staticmethod
690
def _datetime_to_dbus(dt, variant_level=0):
691
"""Convert a UTC datetime.datetime() to a D-Bus type."""
692
return dbus.String(dt.isoformat(),
693
variant_level=variant_level)
694
434
("/clients/"
435
+ self.name.replace(".", "_")))
436
dbus.service.Object.__init__(self, bus,
437
self.dbus_object_path)
695
438
def enable(self):
696
oldstate = getattr(self, u"enabled", False)
439
oldstate = getattr(self, "enabled", False)
697
440
r = Client.enable(self)
698
441
if oldstate != self.enabled:
699
442
# Emit D-Bus signals
700
443
self.PropertyChanged(dbus.String(u"enabled"),
701
444
dbus.Boolean(True, variant_level=1))
702
self.PropertyChanged(
703
dbus.String(u"last_enabled"),
704
self._datetime_to_dbus(self.last_enabled,
705
variant_level=1))
445
self.PropertyChanged(dbus.String(u"last_enabled"),
446
(_datetime_to_dbus(self.last_enabled,
447
variant_level=1)))
706
448
return r
707
449
708
def disable(self, quiet = False):
709
oldstate = getattr(self, u"enabled", False)
710
r = Client.disable(self, quiet=quiet)
711
if not quiet and oldstate != self.enabled:
450
def disable(self, signal = True):
451
oldstate = getattr(self, "enabled", False)
452
r = Client.disable(self)
453
if signal and oldstate != self.enabled:
712
454
# Emit D-Bus signal
713
455
self.PropertyChanged(dbus.String(u"enabled"),
714
456
dbus.Boolean(False, variant_level=1))
719
461
self.remove_from_connection()
720
462
except LookupError:
721
463
pass
722
if hasattr(DBusObjectWithProperties, u"__del__"):
723
DBusObjectWithProperties.__del__(self, *args, **kwargs)
464
if hasattr(dbus.service.Object, "__del__"):
465
dbus.service.Object.__del__(self, *args, **kwargs)
724
466
Client.__del__(self, *args, **kwargs)
725
467
726
468
def checker_callback(self, pid, condition, command,
750
492
# Emit D-Bus signal
751
493
self.PropertyChanged(
752
494
dbus.String(u"last_checked_ok"),
753
(self._datetime_to_dbus(self.last_checked_ok,
754
variant_level=1)))
495
(_datetime_to_dbus(self.last_checked_ok,
496
variant_level=1)))
755
497
return r
756
498
757
499
def start_checker(self, *args, **kwargs):
767
509
# Emit D-Bus signal
768
510
self.CheckerStarted(self.current_checker_command)
769
511
self.PropertyChanged(
770
dbus.String(u"checker_running"),
512
dbus.String("checker_running"),
771
513
dbus.Boolean(True, variant_level=1))
772
514
return r
773
515
774
516
def stop_checker(self, *args, **kwargs):
775
old_checker = getattr(self, u"checker", None)
517
old_checker = getattr(self, "checker", None)
776
518
r = Client.stop_checker(self, *args, **kwargs)
777
519
if (old_checker is not None
778
and getattr(self, u"checker", None) is None):
520
and getattr(self, "checker", None) is None):
779
521
self.PropertyChanged(dbus.String(u"checker_running"),
780
522
dbus.Boolean(False, variant_level=1))
781
523
return r
784
526
_interface = u"se.bsnet.fukt.Mandos.Client"
785
527
786
528
# CheckedOK - method
787
@dbus.service.method(_interface)
788
def CheckedOK(self):
789
return self.checked_ok()
529
CheckedOK = dbus.service.method(_interface)(checked_ok)
530
CheckedOK.__name__ = "CheckedOK"
790
531
791
532
# CheckerCompleted - signal
792
@dbus.service.signal(_interface, signature=u"nxs")
533
@dbus.service.signal(_interface, signature="nxs")
793
534
def CheckerCompleted(self, exitcode, waitstatus, command):
794
535
"D-Bus signal"
795
536
pass
796
537
797
538
# CheckerStarted - signal
798
@dbus.service.signal(_interface, signature=u"s")
539
@dbus.service.signal(_interface, signature="s")
799
540
def CheckerStarted(self, command):
800
541
"D-Bus signal"
801
542
pass
802
543
544
# GetAllProperties - method
545
@dbus.service.method(_interface, out_signature="a{sv}")
546
def GetAllProperties(self):
547
"D-Bus method"
548
return dbus.Dictionary({
549
dbus.String("name"):
550
dbus.String(self.name, variant_level=1),
551
dbus.String("fingerprint"):
552
dbus.String(self.fingerprint, variant_level=1),
553
dbus.String("host"):
554
dbus.String(self.host, variant_level=1),
555
dbus.String("created"):
556
_datetime_to_dbus(self.created, variant_level=1),
557
dbus.String("last_enabled"):
558
(_datetime_to_dbus(self.last_enabled,
559
variant_level=1)
560
if self.last_enabled is not None
561
else dbus.Boolean(False, variant_level=1)),
562
dbus.String("enabled"):
563
dbus.Boolean(self.enabled, variant_level=1),
564
dbus.String("last_checked_ok"):
565
(_datetime_to_dbus(self.last_checked_ok,
566
variant_level=1)
567
if self.last_checked_ok is not None
568
else dbus.Boolean (False, variant_level=1)),
569
dbus.String("timeout"):
570
dbus.UInt64(self.timeout_milliseconds(),
571
variant_level=1),
572
dbus.String("interval"):
573
dbus.UInt64(self.interval_milliseconds(),
574
variant_level=1),
575
dbus.String("checker"):
576
dbus.String(self.checker_command,
577
variant_level=1),
578
dbus.String("checker_running"):
579
dbus.Boolean(self.checker is not None,
580
variant_level=1),
581
dbus.String("object_path"):
582
dbus.ObjectPath(self.dbus_object_path,
583
variant_level=1)
584
}, signature="sv")
585
586
# IsStillValid - method
587
@dbus.service.method(_interface, out_signature="b")
588
def IsStillValid(self):
589
return self.still_valid()
590
803
591
# PropertyChanged - signal
804
@dbus.service.signal(_interface, signature=u"sv")
592
@dbus.service.signal(_interface, signature="sv")
805
593
def PropertyChanged(self, property, value):
806
594
"D-Bus signal"
807
595
pass
808
596
809
# GotSecret - signal
597
# ReceivedSecret - signal
810
598
@dbus.service.signal(_interface)
811
def GotSecret(self):
599
def ReceivedSecret(self):
812
600
"D-Bus signal"
813
601
pass
814
602
818
606
"D-Bus signal"
819
607
pass
820
608
609
# SetChecker - method
610
@dbus.service.method(_interface, in_signature="s")
611
def SetChecker(self, checker):
612
"D-Bus setter method"
613
self.checker_command = checker
614
# Emit D-Bus signal
615
self.PropertyChanged(dbus.String(u"checker"),
616
dbus.String(self.checker_command,
617
variant_level=1))
618
619
# SetHost - method
620
@dbus.service.method(_interface, in_signature="s")
621
def SetHost(self, host):
622
"D-Bus setter method"
623
self.host = host
624
# Emit D-Bus signal
625
self.PropertyChanged(dbus.String(u"host"),
626
dbus.String(self.host, variant_level=1))
627
628
# SetInterval - method
629
@dbus.service.method(_interface, in_signature="t")
630
def SetInterval(self, milliseconds):
631
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
632
# Emit D-Bus signal
633
self.PropertyChanged(dbus.String(u"interval"),
634
(dbus.UInt64(self.interval_milliseconds(),
635
variant_level=1)))
636
637
# SetSecret - method
638
@dbus.service.method(_interface, in_signature="ay",
639
byte_arrays=True)
640
def SetSecret(self, secret):
641
"D-Bus setter method"
642
self.secret = str(secret)
643
644
# SetTimeout - method
645
@dbus.service.method(_interface, in_signature="t")
646
def SetTimeout(self, milliseconds):
647
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
648
# Emit D-Bus signal
649
self.PropertyChanged(dbus.String(u"timeout"),
650
(dbus.UInt64(self.timeout_milliseconds(),
651
variant_level=1)))
652
821
653
# Enable - method
822
@dbus.service.method(_interface)
823
def Enable(self):
824
"D-Bus method"
825
self.enable()
654
Enable = dbus.service.method(_interface)(enable)
655
Enable.__name__ = "Enable"
826
656
827
657
# StartChecker - method
828
658
@dbus.service.method(_interface)
837
667
self.disable()
838
668
839
669
# StopChecker - method
840
@dbus.service.method(_interface)
841
def StopChecker(self):
842
self.stop_checker()
843
844
# name - property
845
@dbus_service_property(_interface, signature=u"s", access=u"read")
846
def name_dbus_property(self):
847
return dbus.String(self.name)
848
849
# fingerprint - property
850
@dbus_service_property(_interface, signature=u"s", access=u"read")
851
def fingerprint_dbus_property(self):
852
return dbus.String(self.fingerprint)
853
854
# host - property
855
@dbus_service_property(_interface, signature=u"s",
856
access=u"readwrite")
857
def host_dbus_property(self, value=None):
858
if value is None: # get
859
return dbus.String(self.host)
860
self.host = value
861
# Emit D-Bus signal
862
self.PropertyChanged(dbus.String(u"host"),
863
dbus.String(value, variant_level=1))
864
865
# created - property
866
@dbus_service_property(_interface, signature=u"s", access=u"read")
867
def created_dbus_property(self):
868
return dbus.String(self._datetime_to_dbus(self.created))
869
870
# last_enabled - property
871
@dbus_service_property(_interface, signature=u"s", access=u"read")
872
def last_enabled_dbus_property(self):
873
if self.last_enabled is None:
874
return dbus.String(u"")
875
return dbus.String(self._datetime_to_dbus(self.last_enabled))
876
877
# enabled - property
878
@dbus_service_property(_interface, signature=u"b",
879
access=u"readwrite")
880
def enabled_dbus_property(self, value=None):
881
if value is None: # get
882
return dbus.Boolean(self.enabled)
883
if value:
884
self.enable()
885
else:
886
self.disable()
887
888
# last_checked_ok - property
889
@dbus_service_property(_interface, signature=u"s",
890
access=u"readwrite")
891
def last_checked_ok_dbus_property(self, value=None):
892
if value is not None:
893
self.checked_ok()
894
return
895
if self.last_checked_ok is None:
896
return dbus.String(u"")
897
return dbus.String(self._datetime_to_dbus(self
898
.last_checked_ok))
899
900
# timeout - property
901
@dbus_service_property(_interface, signature=u"t",
902
access=u"readwrite")
903
def timeout_dbus_property(self, value=None):
904
if value is None: # get
905
return dbus.UInt64(self.timeout_milliseconds())
906
self.timeout = datetime.timedelta(0, 0, 0, value)
907
# Emit D-Bus signal
908
self.PropertyChanged(dbus.String(u"timeout"),
909
dbus.UInt64(value, variant_level=1))
910
if getattr(self, u"disable_initiator_tag", None) is None:
911
return
912
# Reschedule timeout
913
gobject.source_remove(self.disable_initiator_tag)
914
self.disable_initiator_tag = None
915
time_to_die = (self.
916
_timedelta_to_milliseconds((self
917
.last_checked_ok
918
+ self.timeout)
919
- datetime.datetime
920
.utcnow()))
921
if time_to_die <= 0:
922
# The timeout has passed
923
self.disable()
924
else:
925
self.disable_initiator_tag = (gobject.timeout_add
926
(time_to_die, self.disable))
927
928
# interval - property
929
@dbus_service_property(_interface, signature=u"t",
930
access=u"readwrite")
931
def interval_dbus_property(self, value=None):
932
if value is None: # get
933
return dbus.UInt64(self.interval_milliseconds())
934
self.interval = datetime.timedelta(0, 0, 0, value)
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"interval"),
937
dbus.UInt64(value, variant_level=1))
938
if getattr(self, u"checker_initiator_tag", None) is None:
939
return
940
# Reschedule checker run
941
gobject.source_remove(self.checker_initiator_tag)
942
self.checker_initiator_tag = (gobject.timeout_add
943
(value, self.start_checker))
944
self.start_checker() # Start one now, too
945
946
# checker - property
947
@dbus_service_property(_interface, signature=u"s",
948
access=u"readwrite")
949
def checker_dbus_property(self, value=None):
950
if value is None: # get
951
return dbus.String(self.checker_command)
952
self.checker_command = value
953
# Emit D-Bus signal
954
self.PropertyChanged(dbus.String(u"checker"),
955
dbus.String(self.checker_command,
956
variant_level=1))
957
958
# checker_running - property
959
@dbus_service_property(_interface, signature=u"b",
960
access=u"readwrite")
961
def checker_running_dbus_property(self, value=None):
962
if value is None: # get
963
return dbus.Boolean(self.checker is not None)
964
if value:
965
self.start_checker()
966
else:
967
self.stop_checker()
968
969
# object_path - property
970
@dbus_service_property(_interface, signature=u"o", access=u"read")
971
def object_path_dbus_property(self):
972
return self.dbus_object_path # is already a dbus.ObjectPath
973
974
# secret = property
975
@dbus_service_property(_interface, signature=u"ay",
976
access=u"write", byte_arrays=True)
977
def secret_dbus_property(self, value):
978
self.secret = str(value)
670
StopChecker = dbus.service.method(_interface)(stop_checker)
671
StopChecker.__name__ = "StopChecker"
979
672
980
673
del _interface
981
674
982
675
983
class ClientHandler(socketserver.BaseRequestHandler, object):
984
"""A class to handle client connections.
985
986
Instantiated once for each connection to handle it.
676
def peer_certificate(session):
677
"Return the peer's OpenPGP certificate as a bytestring"
678
# If not an OpenPGP certificate...
679
if (gnutls.library.functions
680
.gnutls_certificate_type_get(session._c_object)
681
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
682
# ...do the normal thing
683
return session.peer_certificate
684
list_size = ctypes.c_uint(1)
685
cert_list = (gnutls.library.functions
686
.gnutls_certificate_get_peers
687
(session._c_object, ctypes.byref(list_size)))
688
if not bool(cert_list) and list_size.value != 0:
689
raise gnutls.errors.GNUTLSError("error getting peer"
690
" certificate")
691
if list_size.value == 0:
692
return None
693
cert = cert_list[0]
694
return ctypes.string_at(cert.data, cert.size)
695
696
697
def fingerprint(openpgp):
698
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
699
# New GnuTLS "datum" with the OpenPGP public key
700
datum = (gnutls.library.types
701
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
702
ctypes.POINTER
703
(ctypes.c_ubyte)),
704
ctypes.c_uint(len(openpgp))))
705
# New empty GnuTLS certificate
706
crt = gnutls.library.types.gnutls_openpgp_crt_t()
707
(gnutls.library.functions
708
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
709
# Import the OpenPGP public key into the certificate
710
(gnutls.library.functions
711
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
712
gnutls.library.constants
713
.GNUTLS_OPENPGP_FMT_RAW))
714
# Verify the self signature in the key
715
crtverify = ctypes.c_uint()
716
(gnutls.library.functions
717
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
718
if crtverify.value != 0:
719
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
720
raise gnutls.errors.CertificateSecurityError("Verify failed")
721
# New buffer for the fingerprint
722
buf = ctypes.create_string_buffer(20)
723
buf_len = ctypes.c_size_t()
724
# Get the fingerprint from the certificate into the buffer
725
(gnutls.library.functions
726
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
727
ctypes.byref(buf_len)))
728
# Deinit the certificate
729
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
730
# Convert the buffer to a Python bytestring
731
fpr = ctypes.string_at(buf, buf_len.value)
732
# Convert the bytestring to hexadecimal notation
733
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
734
return hex_fpr
735
736
737
class TCP_handler(SocketServer.BaseRequestHandler, object):
738
"""A TCP request handler class.
739
Instantiated by IPv6_TCPServer for each request to handle it.
987
740
Note: This will run in its own forked process."""
988
741
989
742
def handle(self):
990
743
logger.info(u"TCP connection from: %s",
991
744
unicode(self.client_address))
992
logger.debug(u"IPC Pipe FD: %d", self.server.child_pipe[1])
745
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
993
746
# Open IPC pipe to parent process
994
with contextlib.nested(os.fdopen(self.server.child_pipe[1],
995
u"w", 1),
996
os.fdopen(self.server.parent_pipe[0],
997
u"r", 0)) as (ipc,
998
ipc_return):
747
with closing(os.fdopen(self.server.pipe[1], "w", 1)) as ipc:
999
748
session = (gnutls.connection
1000
749
.ClientSession(self.request,
1001
750
gnutls.connection
1015
764
# no X.509 keys are added to it. Therefore, we can use it
1016
765
# here despite using OpenPGP certificates.
1017
766
1018
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1019
# u"+AES-256-CBC", u"+SHA1",
1020
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1021
# u"+DHE-DSS"))
767
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
768
# "+AES-256-CBC", "+SHA1",
769
# "+COMP-NULL", "+CTYPE-OPENPGP",
770
# "+DHE-DSS"))
1022
771
# Use a fallback default, since this MUST be set.
1023
priority = self.server.gnutls_priority
1024
if priority is None:
1025
priority = u"NORMAL"
772
priority = self.server.settings.get("priority", "NORMAL")
1026
773
(gnutls.library.functions
1027
774
.gnutls_priority_set_direct(session._c_object,
1028
775
priority, None))
1036
783
return
1037
784
logger.debug(u"Handshake succeeded")
1038
785
try:
1039
try:
1040
fpr = self.fingerprint(self.peer_certificate
1041
(session))
1042
except (TypeError, gnutls.errors.GNUTLSError), error:
1043
logger.warning(u"Bad certificate: %s", error)
1044
return
1045
logger.debug(u"Fingerprint: %s", fpr)
1046
1047
for c in self.server.clients:
1048
if c.fingerprint == fpr:
1049
client = c
1050
break
1051
else:
1052
ipc.write(u"NOTFOUND %s %s\n"
1053
% (fpr, unicode(self.client_address)))
1054
return
1055
# Have to check if client.enabled, since it is
1056
# possible that the client was disabled since the
1057
# GnuTLS session was established.
1058
ipc.write(u"GETATTR enabled %s\n" % fpr)
1059
enabled = pickle.load(ipc_return)
1060
if not enabled:
1061
ipc.write(u"DISABLED %s\n" % client.name)
1062
return
1063
ipc.write(u"SENDING %s\n" % client.name)
1064
sent_size = 0
1065
while sent_size < len(client.secret):
1066
sent = session.send(client.secret[sent_size:])
1067
logger.debug(u"Sent: %d, remaining: %d",
1068
sent, len(client.secret)
1069
- (sent_size + sent))
1070
sent_size += sent
1071
finally:
1072
session.bye()
1073
1074
@staticmethod
1075
def peer_certificate(session):
1076
"Return the peer's OpenPGP certificate as a bytestring"
1077
# If not an OpenPGP certificate...
1078
if (gnutls.library.functions
1079
.gnutls_certificate_type_get(session._c_object)
1080
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1081
# ...do the normal thing
1082
return session.peer_certificate
1083
list_size = ctypes.c_uint(1)
1084
cert_list = (gnutls.library.functions
1085
.gnutls_certificate_get_peers
1086
(session._c_object, ctypes.byref(list_size)))
1087
if not bool(cert_list) and list_size.value != 0:
1088
raise gnutls.errors.GNUTLSError(u"error getting peer"
1089
u" certificate")
1090
if list_size.value == 0:
1091
return None
1092
cert = cert_list[0]
1093
return ctypes.string_at(cert.data, cert.size)
1094
1095
@staticmethod
1096
def fingerprint(openpgp):
1097
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1098
# New GnuTLS "datum" with the OpenPGP public key
1099
datum = (gnutls.library.types
1100
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1101
ctypes.POINTER
1102
(ctypes.c_ubyte)),
1103
ctypes.c_uint(len(openpgp))))
1104
# New empty GnuTLS certificate
1105
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1106
(gnutls.library.functions
1107
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1108
# Import the OpenPGP public key into the certificate
1109
(gnutls.library.functions
1110
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1111
gnutls.library.constants
1112
.GNUTLS_OPENPGP_FMT_RAW))
1113
# Verify the self signature in the key
1114
crtverify = ctypes.c_uint()
1115
(gnutls.library.functions
1116
.gnutls_openpgp_crt_verify_self(crt, 0,
1117
ctypes.byref(crtverify)))
1118
if crtverify.value != 0:
1119
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1120
raise (gnutls.errors.CertificateSecurityError
1121
(u"Verify failed"))
1122
# New buffer for the fingerprint
1123
buf = ctypes.create_string_buffer(20)
1124
buf_len = ctypes.c_size_t()
1125
# Get the fingerprint from the certificate into the buffer
1126
(gnutls.library.functions
1127
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1128
ctypes.byref(buf_len)))
1129
# Deinit the certificate
1130
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1131
# Convert the buffer to a Python bytestring
1132
fpr = ctypes.string_at(buf, buf_len.value)
1133
# Convert the bytestring to hexadecimal notation
1134
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1135
return hex_fpr
1136
1137
1138
class ForkingMixInWithPipes(socketserver.ForkingMixIn, object):
1139
"""Like socketserver.ForkingMixIn, but also pass a pipe pair."""
786
fpr = fingerprint(peer_certificate(session))
787
except (TypeError, gnutls.errors.GNUTLSError), error:
788
logger.warning(u"Bad certificate: %s", error)
789
session.bye()
790
return
791
logger.debug(u"Fingerprint: %s", fpr)
792
793
for c in self.server.clients:
794
if c.fingerprint == fpr:
795
client = c
796
break
797
else:
798
logger.warning(u"Client not found for fingerprint: %s",
799
fpr)
800
ipc.write("NOTFOUND %s\n" % fpr)
801
session.bye()
802
return
803
# Have to check if client.still_valid(), since it is
804
# possible that the client timed out while establishing
805
# the GnuTLS session.
806
if not client.still_valid():
807
logger.warning(u"Client %(name)s is invalid",
808
vars(client))
809
ipc.write("INVALID %s\n" % client.name)
810
session.bye()
811
return
812
ipc.write("SENDING %s\n" % client.name)
813
sent_size = 0
814
while sent_size < len(client.secret):
815
sent = session.send(client.secret[sent_size:])
816
logger.debug(u"Sent: %d, remaining: %d",
817
sent, len(client.secret)
818
- (sent_size + sent))
819
sent_size += sent
820
session.bye()
821
822
823
class ForkingMixInWithPipe(SocketServer.ForkingMixIn, object):
824
"""Like SocketServer.ForkingMixIn, but also pass a pipe.
825
Assumes a gobject.MainLoop event loop.
826
"""
1140
827
def process_request(self, request, client_address):
1141
"""Overrides and wraps the original process_request().
1142
1143
This function creates a new pipe in self.pipe
828
"""This overrides and wraps the original process_request().
829
This function creates a new pipe in self.pipe
1144
830
"""
1145
self.child_pipe = os.pipe() # Child writes here
1146
self.parent_pipe = os.pipe() # Parent writes here
1147
super(ForkingMixInWithPipes,
831
self.pipe = os.pipe()
832
super(ForkingMixInWithPipe,
1148
833
self).process_request(request, client_address)
1149
# Close unused ends for parent
1150
os.close(self.parent_pipe[0]) # close read end
1151
os.close(self.child_pipe[1]) # close write end
1152
self.add_pipe_fds(self.child_pipe[0], self.parent_pipe[1])
1153
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
834
os.close(self.pipe[1]) # close write end
835
# Call "handle_ipc" for both data and EOF events
836
gobject.io_add_watch(self.pipe[0],
837
gobject.IO_IN | gobject.IO_HUP,
838
self.handle_ipc)
839
def handle_ipc(source, condition):
1154
840
"""Dummy function; override as necessary"""
1155
os.close(child_pipe_fd)
1156
os.close(parent_pipe_fd)
1157
1158
1159
class IPv6_TCPServer(ForkingMixInWithPipes,
1160
socketserver.TCPServer, object):
841
os.close(source)
842
return False
843
844
845
class IPv6_TCPServer(ForkingMixInWithPipe,
846
SocketServer.TCPServer, object):
1161
847
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1162
1163
848
Attributes:
849
settings: Server settings
850
clients: Set() of Client objects
1164
851
enabled: Boolean; whether this server is activated yet
1165
interface: None or a network interface name (string)
1166
use_ipv6: Boolean; to use IPv6 or not
1167
852
"""
1168
def __init__(self, server_address, RequestHandlerClass,
1169
interface=None, use_ipv6=True):
1170
self.interface = interface
1171
if use_ipv6:
1172
self.address_family = socket.AF_INET6
1173
socketserver.TCPServer.__init__(self, server_address,
1174
RequestHandlerClass)
853
address_family = socket.AF_INET6
854
def __init__(self, *args, **kwargs):
855
if "settings" in kwargs:
856
self.settings = kwargs["settings"]
857
del kwargs["settings"]
858
if "clients" in kwargs:
859
self.clients = kwargs["clients"]
860
del kwargs["clients"]
861
if "use_ipv6" in kwargs:
862
if not kwargs["use_ipv6"]:
863
self.address_family = socket.AF_INET
864
del kwargs["use_ipv6"]
865
self.enabled = False
866
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
1175
867
def server_bind(self):
1176
868
"""This overrides the normal server_bind() function
1177
869
to bind to an interface if one was specified, and also NOT to
1178
870
bind to an address or port if they were not specified."""
1179
if self.interface is not None:
1180
if SO_BINDTODEVICE is None:
1181
logger.error(u"SO_BINDTODEVICE does not exist;"
1182
u" cannot bind to interface %s",
1183
self.interface)
1184
else:
1185
try:
1186
self.socket.setsockopt(socket.SOL_SOCKET,
1187
SO_BINDTODEVICE,
1188
str(self.interface
1189
+ u'\0'))
1190
except socket.error, error:
1191
if error[0] == errno.EPERM:
1192
logger.error(u"No permission to"
1193
u" bind to interface %s",
1194
self.interface)
1195
elif error[0] == errno.ENOPROTOOPT:
1196
logger.error(u"SO_BINDTODEVICE not available;"
1197
u" cannot bind to interface %s",
1198
self.interface)
1199
else:
1200
raise
871
if self.settings["interface"]:
872
# 25 is from /usr/include/asm-i486/socket.h
873
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
874
try:
875
self.socket.setsockopt(socket.SOL_SOCKET,
876
SO_BINDTODEVICE,
877
self.settings["interface"])
878
except socket.error, error:
879
if error[0] == errno.EPERM:
880
logger.error(u"No permission to"
881
u" bind to interface %s",
882
self.settings["interface"])
883
else:
884
raise
1201
885
# Only bind(2) the socket if we really need to.
1202
886
if self.server_address[0] or self.server_address[1]:
1203
887
if not self.server_address[0]:
1204
888
if self.address_family == socket.AF_INET6:
1205
any_address = u"::" # in6addr_any
889
any_address = "::" # in6addr_any
1206
890
else:
1207
891
any_address = socket.INADDR_ANY
1208
892
self.server_address = (any_address,
1210
894
elif not self.server_address[1]:
1211
895
self.server_address = (self.server_address[0],
1212
896
0)
1213
# if self.interface:
897
# if self.settings["interface"]:
1214
898
# self.server_address = (self.server_address[0],
1215
899
# 0, # port
1216
900
# 0, # flowinfo
1217
901
# if_nametoindex
1218
# (self.interface))
1219
return socketserver.TCPServer.server_bind(self)
1220
1221
1222
class MandosServer(IPv6_TCPServer):
1223
"""Mandos server.
1224
1225
Attributes:
1226
clients: set of Client objects
1227
gnutls_priority GnuTLS priority string
1228
use_dbus: Boolean; to emit D-Bus signals or not
1229
1230
Assumes a gobject.MainLoop event loop.
1231
"""
1232
def __init__(self, server_address, RequestHandlerClass,
1233
interface=None, use_ipv6=True, clients=None,
1234
gnutls_priority=None, use_dbus=True):
1235
self.enabled = False
1236
self.clients = clients
1237
if self.clients is None:
1238
self.clients = set()
1239
self.use_dbus = use_dbus
1240
self.gnutls_priority = gnutls_priority
1241
IPv6_TCPServer.__init__(self, server_address,
1242
RequestHandlerClass,
1243
interface = interface,
1244
use_ipv6 = use_ipv6)
902
# (self.settings
903
# ["interface"]))
904
return super(IPv6_TCPServer, self).server_bind()
1245
905
def server_activate(self):
1246
906
if self.enabled:
1247
return socketserver.TCPServer.server_activate(self)
907
return super(IPv6_TCPServer, self).server_activate()
1248
908
def enable(self):
1249
909
self.enabled = True
1250
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
1251
# Call "handle_ipc" for both data and EOF events
1252
gobject.io_add_watch(child_pipe_fd,
1253
gobject.IO_IN | gobject.IO_HUP,
1254
functools.partial(self.handle_ipc,
1255
reply_fd
1256
=parent_pipe_fd))
1257
def handle_ipc(self, source, condition, reply_fd=None,
1258
file_objects={}):
910
def handle_ipc(self, source, condition, file_objects={}):
1259
911
condition_names = {
1260
gobject.IO_IN: u"IN", # There is data to read.
1261
gobject.IO_OUT: u"OUT", # Data can be written (without
1262
# blocking).
1263
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1264
gobject.IO_ERR: u"ERR", # Error condition.
1265
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1266
# broken, usually for pipes and
1267
# sockets).
912
gobject.IO_IN: "IN", # There is data to read.
913
gobject.IO_OUT: "OUT", # Data can be written (without
914
# blocking).
915
gobject.IO_PRI: "PRI", # There is urgent data to read.
916
gobject.IO_ERR: "ERR", # Error condition.
917
gobject.IO_HUP: "HUP" # Hung up (the connection has been
918
# broken, usually for pipes and
919
# sockets).
1268
920
}
1269
921
conditions_string = ' | '.join(name
1270
922
for cond, name in
1271
923
condition_names.iteritems()
1272
924
if cond & condition)
1273
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
925
logger.debug("Handling IPC: FD = %d, condition = %s", source,
1274
926
conditions_string)
1275
927
1276
# Turn the pipe file descriptors into Python file objects
928
# Turn the pipe file descriptor into a Python file object
1277
929
if source not in file_objects:
1278
file_objects[source] = os.fdopen(source, u"r", 1)
1279
if reply_fd not in file_objects:
1280
file_objects[reply_fd] = os.fdopen(reply_fd, u"w", 0)
930
file_objects[source] = os.fdopen(source, "r", 1)
1281
931
1282
932
# Read a line from the file object
1283
933
cmdline = file_objects[source].readline()
1284
934
if not cmdline: # Empty line means end of file
1285
# close the IPC pipes
935
# close the IPC pipe
1286
936
file_objects[source].close()
1287
937
del file_objects[source]
1288
file_objects[reply_fd].close()
1289
del file_objects[reply_fd]
1290
938
1291
939
# Stop calling this function
1292
940
return False
1293
941
1294
logger.debug(u"IPC command: %r", cmdline)
942
logger.debug("IPC command: %r\n" % cmdline)
1295
943
1296
944
# Parse and act on command
1297
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1298
1299
if cmd == u"NOTFOUND":
1300
fpr, address = args.split(None, 1)
1301
logger.warning(u"Client not found for fingerprint: %s, ad"
1302
u"dress: %s", fpr, address)
1303
if self.use_dbus:
945
cmd, args = cmdline.split(None, 1)
946
if cmd == "NOTFOUND":
947
if self.settings["use_dbus"]:
1304
948
# Emit D-Bus signal
1305
mandos_dbus_service.ClientNotFound(fpr, address)
1306
elif cmd == u"DISABLED":
1307
for client in self.clients:
1308
if client.name == args:
1309
logger.warning(u"Client %s is disabled", args)
1310
if self.use_dbus:
949
mandos_dbus_service.ClientNotFound(args)
950
elif cmd == "INVALID":
951
if self.settings["use_dbus"]:
952
for client in self.clients:
953
if client.name == args:
1311
954
# Emit D-Bus signal
1312
955
client.Rejected()
1313
break
1314
else:
1315
logger.error(u"Unknown client %s is disabled", args)
1316
elif cmd == u"SENDING":
956
break
957
elif cmd == "SENDING":
1317
958
for client in self.clients:
1318
959
if client.name == args:
1319
logger.info(u"Sending secret to %s", client.name)
1320
960
client.checked_ok()
1321
if self.use_dbus:
961
if self.settings["use_dbus"]:
1322
962
# Emit D-Bus signal
1323
client.GotSecret()
1324
break
1325
else:
1326
logger.error(u"Sending secret to unknown client %s",
1327
args)
1328
elif cmd == u"GETATTR":
1329
attr_name, fpr = args.split(None, 1)
1330
for client in self.clients:
1331
if client.fingerprint == fpr:
1332
attr_value = getattr(client, attr_name, None)
1333
logger.debug("IPC reply: %r", attr_value)
1334
pickle.dump(attr_value, file_objects[reply_fd])
1335
break
1336
else:
1337
logger.error(u"Client %s on address %s requesting "
1338
u"attribute %s not found", fpr, address,
1339
attr_name)
1340
pickle.dump(None, file_objects[reply_fd])
963
client.ReceivedSecret()
964
break
1341
965
else:
1342
logger.error(u"Unknown IPC command: %r", cmdline)
966
logger.error("Unknown IPC command: %r", cmdline)
1343
967
1344
968
# Keep calling this function
1345
969
return True
1348
972
def string_to_delta(interval):
1349
973
"""Parse a string and return a datetime.timedelta
1350
974
1351
>>> string_to_delta(u'7d')
975
>>> string_to_delta('7d')
1352
976
datetime.timedelta(7)
1353
>>> string_to_delta(u'60s')
977
>>> string_to_delta('60s')
1354
978
datetime.timedelta(0, 60)
1355
>>> string_to_delta(u'60m')
979
>>> string_to_delta('60m')
1356
980
datetime.timedelta(0, 3600)
1357
>>> string_to_delta(u'24h')
981
>>> string_to_delta('24h')
1358
982
datetime.timedelta(1)
1359
983
>>> string_to_delta(u'1w')
1360
984
datetime.timedelta(7)
1361
>>> string_to_delta(u'5m 30s')
985
>>> string_to_delta('5m 30s')
1362
986
datetime.timedelta(0, 330)
1363
987
"""
1364
988
timevalue = datetime.timedelta(0)
1377
1001
elif suffix == u"w":
1378
1002
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1379
1003
else:
1380
raise ValueError(u"Unknown suffix %r" % suffix)
1381
except (ValueError, IndexError), e:
1382
raise ValueError(e.message)
1004
raise ValueError
1005
except (ValueError, IndexError):
1006
raise ValueError
1383
1007
timevalue += delta
1384
1008
return timevalue
1385
1009
1386
1010
1011
def server_state_changed(state):
1012
"""Derived from the Avahi example code"""
1013
if state == avahi.SERVER_COLLISION:
1014
logger.error(u"Zeroconf server name collision")
1015
service.remove()
1016
elif state == avahi.SERVER_RUNNING:
1017
service.add()
1018
1019
1020
def entry_group_state_changed(state, error):
1021
"""Derived from the Avahi example code"""
1022
logger.debug(u"Avahi state change: %i", state)
1023
1024
if state == avahi.ENTRY_GROUP_ESTABLISHED:
1025
logger.debug(u"Zeroconf service established.")
1026
elif state == avahi.ENTRY_GROUP_COLLISION:
1027
logger.warning(u"Zeroconf service name collision.")
1028
service.rename()
1029
elif state == avahi.ENTRY_GROUP_FAILURE:
1030
logger.critical(u"Avahi: Error in group state changed %s",
1031
unicode(error))
1032
raise AvahiGroupError(u"State changed: %s" % unicode(error))
1033
1387
1034
def if_nametoindex(interface):
1388
"""Call the C function if_nametoindex(), or equivalent
1389
1390
Note: This function cannot accept a unicode string."""
1035
"""Call the C function if_nametoindex(), or equivalent"""
1391
1036
global if_nametoindex
1392
1037
try:
1393
1038
if_nametoindex = (ctypes.cdll.LoadLibrary
1394
(ctypes.util.find_library(u"c"))
1039
(ctypes.util.find_library("c"))
1395
1040
.if_nametoindex)
1396
1041
except (OSError, AttributeError):
1397
logger.warning(u"Doing if_nametoindex the hard way")
1042
if "struct" not in sys.modules:
1043
import struct
1044
if "fcntl" not in sys.modules:
1045
import fcntl
1398
1046
def if_nametoindex(interface):
1399
1047
"Get an interface index the hard way, i.e. using fcntl()"
1400
1048
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1401
with contextlib.closing(socket.socket()) as s:
1049
with closing(socket.socket()) as s:
1402
1050
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1403
struct.pack(str(u"16s16x"),
1404
interface))
1405
interface_index = struct.unpack(str(u"I"),
1406
ifreq[16:20])[0]
1051
struct.pack("16s16x", interface))
1052
interface_index = struct.unpack("I", ifreq[16:20])[0]
1407
1053
return interface_index
1408
1054
return if_nametoindex(interface)
1409
1055
1410
1056
1411
1057
def daemon(nochdir = False, noclose = False):
1412
1058
"""See daemon(3). Standard BSD Unix function.
1413
1414
1059
This should really exist as os.daemon, but it doesn't (yet)."""
1415
1060
if os.fork():
1416
1061
sys.exit()
1417
1062
os.setsid()
1418
1063
if not nochdir:
1419
os.chdir(u"/")
1064
os.chdir("/")
1420
1065
if os.fork():
1421
1066
sys.exit()
1422
1067
if not noclose:
1424
1069
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1425
1070
if not stat.S_ISCHR(os.fstat(null).st_mode):
1426
1071
raise OSError(errno.ENODEV,
1427
u"%s not a character device"
1428
% os.path.devnull)
1072
"/dev/null not a character device")
1429
1073
os.dup2(null, sys.stdin.fileno())
1430
1074
os.dup2(null, sys.stdout.fileno())
1431
1075
os.dup2(null, sys.stderr.fileno())
1435
1079
1436
1080
def main():
1437
1081
1438
##################################################################
1082
######################################################################
1439
1083
# Parsing of options, both command line and config file
1440
1084
1441
1085
parser = optparse.OptionParser(version = "%%prog %s" % version)
1442
parser.add_option("-i", u"--interface", type=u"string",
1443
metavar="IF", help=u"Bind to interface IF")
1444
parser.add_option("-a", u"--address", type=u"string",
1445
help=u"Address to listen for requests on")
1446
parser.add_option("-p", u"--port", type=u"int",
1447
help=u"Port number to receive requests on")
1448
parser.add_option("--check", action=u"store_true",
1449
help=u"Run self-test")
1450
parser.add_option("--debug", action=u"store_true",
1451
help=u"Debug mode; run in foreground and log to"
1452
u" terminal")
1453
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1454
u" priority string (see GnuTLS documentation)")
1455
parser.add_option("--servicename", type=u"string",
1456
metavar=u"NAME", help=u"Zeroconf service name")
1457
parser.add_option("--configdir", type=u"string",
1458
default=u"/etc/mandos", metavar=u"DIR",
1459
help=u"Directory to search for configuration"
1460
u" files")
1461
parser.add_option("--no-dbus", action=u"store_false",
1462
dest=u"use_dbus", help=u"Do not provide D-Bus"
1463
u" system bus interface")
1464
parser.add_option("--no-ipv6", action=u"store_false",
1465
dest=u"use_ipv6", help=u"Do not use IPv6")
1086
parser.add_option("-i", "--interface", type="string",
1087
metavar="IF", help="Bind to interface IF")
1088
parser.add_option("-a", "--address", type="string",
1089
help="Address to listen for requests on")
1090
parser.add_option("-p", "--port", type="int",
1091
help="Port number to receive requests on")
1092
parser.add_option("--check", action="store_true",
1093
help="Run self-test")
1094
parser.add_option("--debug", action="store_true",
1095
help="Debug mode; run in foreground and log to"
1096
" terminal")
1097
parser.add_option("--priority", type="string", help="GnuTLS"
1098
" priority string (see GnuTLS documentation)")
1099
parser.add_option("--servicename", type="string", metavar="NAME",
1100
help="Zeroconf service name")
1101
parser.add_option("--configdir", type="string",
1102
default="/etc/mandos", metavar="DIR",
1103
help="Directory to search for configuration"
1104
" files")
1105
parser.add_option("--no-dbus", action="store_false",
1106
dest="use_dbus",
1107
help="Do not provide D-Bus system bus"
1108
" interface")
1109
parser.add_option("--no-ipv6", action="store_false",
1110
dest="use_ipv6", help="Do not use IPv6")
1466
1111
options = parser.parse_args()[0]
1467
1112
1468
1113
if options.check:
1471
1116
sys.exit()
1472
1117
1473
1118
# Default values for config file for server-global settings
1474
server_defaults = { u"interface": u"",
1475
u"address": u"",
1476
u"port": u"",
1477
u"debug": u"False",
1478
u"priority":
1479
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1480
u"servicename": u"Mandos",
1481
u"use_dbus": u"True",
1482
u"use_ipv6": u"True",
1119
server_defaults = { "interface": "",
1120
"address": "",
1121
"port": "",
1122
"debug": "False",
1123
"priority":
1124
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1125
"servicename": "Mandos",
1126
"use_dbus": "True",
1127
"use_ipv6": "True",
1483
1128
}
1484
1129
1485
1130
# Parse config file for server-global settings
1486
server_config = configparser.SafeConfigParser(server_defaults)
1131
server_config = ConfigParser.SafeConfigParser(server_defaults)
1487
1132
del server_defaults
1488
server_config.read(os.path.join(options.configdir,
1489
u"mandos.conf"))
1133
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1490
1134
# Convert the SafeConfigParser object to a dict
1491
1135
server_settings = server_config.defaults()
1492
1136
# Use the appropriate methods on the non-string config options
1493
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1494
server_settings[option] = server_config.getboolean(u"DEFAULT",
1495
option)
1137
server_settings["debug"] = server_config.getboolean("DEFAULT",
1138
"debug")
1139
server_settings["use_dbus"] = server_config.getboolean("DEFAULT",
1140
"use_dbus")
1141
server_settings["use_ipv6"] = server_config.getboolean("DEFAULT",
1142
"use_ipv6")
1496
1143
if server_settings["port"]:
1497
server_settings["port"] = server_config.getint(u"DEFAULT",
1498
u"port")
1144
server_settings["port"] = server_config.getint("DEFAULT",
1145
"port")
1499
1146
del server_config
1500
1147
1501
1148
# Override the settings from the config file with command line
1502
1149
# options, if set.
1503
for option in (u"interface", u"address", u"port", u"debug",
1504
u"priority", u"servicename", u"configdir",
1505
u"use_dbus", u"use_ipv6"):
1150
for option in ("interface", "address", "port", "debug",
1151
"priority", "servicename", "configdir",
1152
"use_dbus", "use_ipv6"):
1506
1153
value = getattr(options, option)
1507
1154
if value is not None:
1508
1155
server_settings[option] = value
1509
1156
del options
1510
# Force all strings to be unicode
1511
for option in server_settings.keys():
1512
if type(server_settings[option]) is str:
1513
server_settings[option] = unicode(server_settings[option])
1514
1157
# Now we have our good server settings in "server_settings"
1515
1158
1516
1159
##################################################################
1517
1160
1518
1161
# For convenience
1519
debug = server_settings[u"debug"]
1520
use_dbus = server_settings[u"use_dbus"]
1521
use_ipv6 = server_settings[u"use_ipv6"]
1162
debug = server_settings["debug"]
1163
use_dbus = server_settings["use_dbus"]
1164
use_ipv6 = server_settings["use_ipv6"]
1522
1165
1523
1166
if not debug:
1524
1167
syslogger.setLevel(logging.WARNING)
1525
1168
console.setLevel(logging.WARNING)
1526
1169
1527
if server_settings[u"servicename"] != u"Mandos":
1170
if server_settings["servicename"] != "Mandos":
1528
1171
syslogger.setFormatter(logging.Formatter
1529
(u'Mandos (%s) [%%(process)d]:'
1530
u' %%(levelname)s: %%(message)s'
1531
% server_settings[u"servicename"]))
1172
('Mandos (%s) [%%(process)d]:'
1173
' %%(levelname)s: %%(message)s'
1174
% server_settings["servicename"]))
1532
1175
1533
1176
# Parse config file with clients
1534
client_defaults = { u"timeout": u"1h",
1535
u"interval": u"5m",
1536
u"checker": u"fping -q -- %%(host)s",
1537
u"host": u"",
1177
client_defaults = { "timeout": "1h",
1178
"interval": "5m",
1179
"checker": "fping -q -- %%(host)s",
1180
"host": "",
1538
1181
}
1539
client_config = configparser.SafeConfigParser(client_defaults)
1540
client_config.read(os.path.join(server_settings[u"configdir"],
1541
u"clients.conf"))
1542
1182
client_config = ConfigParser.SafeConfigParser(client_defaults)
1183
client_config.read(os.path.join(server_settings["configdir"],
1184
"clients.conf"))
1185
1543
1186
global mandos_dbus_service
1544
1187
mandos_dbus_service = None
1545
1188
1546
tcp_server = MandosServer((server_settings[u"address"],
1547
server_settings[u"port"]),
1548
ClientHandler,
1549
interface=server_settings[u"interface"],
1550
use_ipv6=use_ipv6,
1551
gnutls_priority=
1552
server_settings[u"priority"],
1553
use_dbus=use_dbus)
1554
pidfilename = u"/var/run/mandos.pid"
1189
clients = Set()
1190
tcp_server = IPv6_TCPServer((server_settings["address"],
1191
server_settings["port"]),
1192
TCP_handler,
1193
settings=server_settings,
1194
clients=clients, use_ipv6=use_ipv6)
1195
pidfilename = "/var/run/mandos.pid"
1555
1196
try:
1556
pidfile = open(pidfilename, u"w")
1197
pidfile = open(pidfilename, "w")
1557
1198
except IOError:
1558
logger.error(u"Could not open file %r", pidfilename)
1199
logger.error("Could not open file %r", pidfilename)
1559
1200
1560
1201
try:
1561
uid = pwd.getpwnam(u"_mandos").pw_uid
1562
gid = pwd.getpwnam(u"_mandos").pw_gid
1202
uid = pwd.getpwnam("_mandos").pw_uid
1203
gid = pwd.getpwnam("_mandos").pw_gid
1563
1204
except KeyError:
1564
1205
try:
1565
uid = pwd.getpwnam(u"mandos").pw_uid
1566
gid = pwd.getpwnam(u"mandos").pw_gid
1206
uid = pwd.getpwnam("mandos").pw_uid
1207
gid = pwd.getpwnam("mandos").pw_gid
1567
1208
except KeyError:
1568
1209
try:
1569
uid = pwd.getpwnam(u"nobody").pw_uid
1570
gid = pwd.getpwnam(u"nobody").pw_gid
1210
uid = pwd.getpwnam("nobody").pw_uid
1211
gid = pwd.getpwnam("nogroup").pw_gid
1571
1212
except KeyError:
1572
1213
uid = 65534
1573
1214
gid = 65534
1586
1227
1587
1228
@gnutls.library.types.gnutls_log_func
1588
1229
def debug_gnutls(level, string):
1589
logger.debug(u"GnuTLS: %s", string[:-1])
1230
logger.debug("GnuTLS: %s", string[:-1])
1590
1231
1591
1232
(gnutls.library.functions
1592
1233
.gnutls_global_set_log_function(debug_gnutls))
1593
1234
1235
global service
1236
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1237
service = AvahiService(name = server_settings["servicename"],
1238
servicetype = "_mandos._tcp",
1239
protocol = protocol)
1240
if server_settings["interface"]:
1241
service.interface = (if_nametoindex
1242
(server_settings["interface"]))
1243
1594
1244
global main_loop
1245
global bus
1246
global server
1595
1247
# From the Avahi example code
1596
1248
DBusGMainLoop(set_as_default=True )
1597
1249
main_loop = gobject.MainLoop()
1598
1250
bus = dbus.SystemBus()
1251
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1252
avahi.DBUS_PATH_SERVER),
1253
avahi.DBUS_INTERFACE_SERVER)
1599
1254
# End of Avahi example code
1600
1255
if use_dbus:
1601
try:
1602
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1603
bus, do_not_queue=True)
1604
except dbus.exceptions.NameExistsException, e:
1605
logger.error(unicode(e) + u", disabling D-Bus")
1606
use_dbus = False
1607
server_settings[u"use_dbus"] = False
1608
tcp_server.use_dbus = False
1609
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1610
service = AvahiService(name = server_settings[u"servicename"],
1611
servicetype = u"_mandos._tcp",
1612
protocol = protocol, bus = bus)
1613
if server_settings["interface"]:
1614
service.interface = (if_nametoindex
1615
(str(server_settings[u"interface"])))
1256
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1616
1257
1617
1258
client_class = Client
1618
1259
if use_dbus:
1619
client_class = functools.partial(ClientDBus, bus = bus)
1620
tcp_server.clients.update(set(
1260
client_class = ClientDBus
1261
clients.update(Set(
1621
1262
client_class(name = section,
1622
1263
config= dict(client_config.items(section)))
1623
1264
for section in client_config.sections()))
1624
if not tcp_server.clients:
1265
if not clients:
1625
1266
logger.warning(u"No clients defined")
1626
1267
1627
1268
if debug:
1637
1278
daemon()
1638
1279
1639
1280
try:
1640
with pidfile:
1281
with closing(pidfile):
1641
1282
pid = os.getpid()
1642
1283
pidfile.write(str(pid) + "\n")
1643
1284
del pidfile
1649
1290
pass
1650
1291
del pidfilename
1651
1292
1293
def cleanup():
1294
"Cleanup function; run on exit"
1295
global group
1296
# From the Avahi example code
1297
if not group is None:
1298
group.Free()
1299
group = None
1300
# End of Avahi example code
1301
1302
while clients:
1303
client = clients.pop()
1304
client.disable_hook = None
1305
client.disable()
1306
1307
atexit.register(cleanup)
1308
1652
1309
if not debug:
1653
1310
signal.signal(signal.SIGINT, signal.SIG_IGN)
1654
1311
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1658
1315
class MandosDBusService(dbus.service.Object):
1659
1316
"""A D-Bus proxy object"""
1660
1317
def __init__(self):
1661
dbus.service.Object.__init__(self, bus, u"/")
1318
dbus.service.Object.__init__(self, bus, "/")
1662
1319
_interface = u"se.bsnet.fukt.Mandos"
1663
1320
1664
@dbus.service.signal(_interface, signature=u"o")
1665
def ClientAdded(self, objpath):
1666
"D-Bus signal"
1667
pass
1668
1669
@dbus.service.signal(_interface, signature=u"ss")
1670
def ClientNotFound(self, fingerprint, address):
1671
"D-Bus signal"
1672
pass
1673
1674
@dbus.service.signal(_interface, signature=u"os")
1321
@dbus.service.signal(_interface, signature="oa{sv}")
1322
def ClientAdded(self, objpath, properties):
1323
"D-Bus signal"
1324
pass
1325
1326
@dbus.service.signal(_interface, signature="s")
1327
def ClientNotFound(self, fingerprint):
1328
"D-Bus signal"
1329
pass
1330
1331
@dbus.service.signal(_interface, signature="os")
1675
1332
def ClientRemoved(self, objpath, name):
1676
1333
"D-Bus signal"
1677
1334
pass
1678
1335
1679
@dbus.service.method(_interface, out_signature=u"ao")
1336
@dbus.service.method(_interface, out_signature="ao")
1680
1337
def GetAllClients(self):
1681
1338
"D-Bus method"
1682
return dbus.Array(c.dbus_object_path
1683
for c in tcp_server.clients)
1339
return dbus.Array(c.dbus_object_path for c in clients)
1684
1340
1685
@dbus.service.method(_interface,
1686
out_signature=u"a{oa{sv}}")
1341
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1687
1342
def GetAllClientsWithProperties(self):
1688
1343
"D-Bus method"
1689
1344
return dbus.Dictionary(
1690
((c.dbus_object_path, c.GetAll(u""))
1691
for c in tcp_server.clients),
1692
signature=u"oa{sv}")
1345
((c.dbus_object_path, c.GetAllProperties())
1346
for c in clients),
1347
signature="oa{sv}")
1693
1348
1694
@dbus.service.method(_interface, in_signature=u"o")
1349
@dbus.service.method(_interface, in_signature="o")
1695
1350
def RemoveClient(self, object_path):
1696
1351
"D-Bus method"
1697
for c in tcp_server.clients:
1352
for c in clients:
1698
1353
if c.dbus_object_path == object_path:
1699
tcp_server.clients.remove(c)
1354
clients.remove(c)
1700
1355
c.remove_from_connection()
1701
1356
# Don't signal anything except ClientRemoved
1702
c.disable(quiet=True)
1357
c.disable(signal=False)
1703
1358
# Emit D-Bus signal
1704
1359
self.ClientRemoved(object_path, c.name)
1705
1360
return
1706
raise KeyError(object_path)
1361
raise KeyError
1707
1362
1708
1363
del _interface
1709
1364
1710
1365
mandos_dbus_service = MandosDBusService()
1711
1366
1712
def cleanup():
1713
"Cleanup function; run on exit"
1714
service.cleanup()
1715
1716
while tcp_server.clients:
1717
client = tcp_server.clients.pop()
1718
if use_dbus:
1719
client.remove_from_connection()
1720
client.disable_hook = None
1721
# Don't signal anything except ClientRemoved
1722
client.disable(quiet=True)
1723
if use_dbus:
1724
# Emit D-Bus signal
1725
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1726
client.name)
1727
1728
atexit.register(cleanup)
1729
1730
for client in tcp_server.clients:
1367
for client in clients:
1731
1368
if use_dbus:
1732
1369
# Emit D-Bus signal
1733
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1370
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1371
client.GetAllProperties())
1734
1372
client.enable()
1735
1373
1736
1374
tcp_server.enable()
1750
1388
1751
1389
try:
1752
1390
# From the Avahi example code
1391
server.connect_to_signal("StateChanged", server_state_changed)
1753
1392
try:
1754
service.activate()
1393
server_state_changed(server.GetState())
1755
1394
except dbus.exceptions.DBusException, error:
1756
1395
logger.critical(u"DBusException: %s", error)
1757
cleanup()
1758
1396
sys.exit(1)
1759
1397
# End of Avahi example code
1760
1398
1767
1405
main_loop.run()
1768
1406
except AvahiError, error:
1769
1407
logger.critical(u"AvahiError: %s", error)
1770
cleanup()
1771
1408
sys.exit(1)
1772
1409
except KeyboardInterrupt:
1773
1410
if debug:
1774
1411
print >> sys.stderr
1775
logger.debug(u"Server received KeyboardInterrupt")
1776
logger.debug(u"Server exiting")
1777
# Must run before the D-Bus bus name gets deregistered
1778
cleanup()
1412
logger.debug("Server received KeyboardInterrupt")
1413
logger.debug("Server exiting")
1779
1414
1780
1415
if __name__ == '__main__':
1781
1416
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0