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- Committer: Teddy Hogeborn
- Date: 2009-02-14 18:07:05 UTC
- Revision ID: teddy@fukt.bsnet.se-20090214180705-vu6b7j4i2v2hibgg
Use "getconf" to get correct LFS compile and link flags.
* Makefile (GPGME_CFLAGS): Added output of "getconf LFS_CFLAGS".
(GPGME_LIBS): Added output of "getconf LFS_LIBS" and
"getconf LFS_LDFLAGS".
* plugins.d/mandos-client.c: Only define "_LARGEFILE_SOURCE" and
"_FILE_OFFSET_BITS" if they are not
already defined.
* Makefile (GPGME_CFLAGS): Added output of "getconf LFS_CFLAGS".
(GPGME_LIBS): Added output of "getconf LFS_LIBS" and
"getconf LFS_LDFLAGS".
* plugins.d/mandos-client.c: Only define "_LARGEFILE_SOURCE" and
"_FILE_OFFSET_BITS" if they are not
already defined.
- files modified:
- INSTALL
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
56
57
import logging.handlers
57
58
import pwd
58
59
from contextlib import closing
59
import struct
60
import fcntl
61
import functools
62
60
63
61
import dbus
64
62
import dbus.service
67
65
from dbus.mainloop.glib import DBusGMainLoop
68
66
import ctypes
69
67
import ctypes.util
70
import xml.dom.minidom
71
import inspect
72
73
try:
74
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
75
except AttributeError:
76
try:
77
from IN import SO_BINDTODEVICE
78
except ImportError:
79
SO_BINDTODEVICE = None
80
81
82
version = "1.0.12"
83
84
logger = logging.Logger(u'mandos')
68
69
version = "1.0.6"
70
71
logger = logging.Logger('mandos')
85
72
syslogger = (logging.handlers.SysLogHandler
86
73
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
87
74
address = "/dev/log"))
88
75
syslogger.setFormatter(logging.Formatter
89
(u'Mandos [%(process)d]: %(levelname)s:'
90
u' %(message)s'))
76
('Mandos [%(process)d]: %(levelname)s:'
77
' %(message)s'))
91
78
logger.addHandler(syslogger)
92
79
93
80
console = logging.StreamHandler()
94
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
95
u' %(levelname)s:'
96
u' %(message)s'))
81
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
82
' %(levelname)s: %(message)s'))
97
83
logger.addHandler(console)
98
84
99
85
class AvahiError(Exception):
112
98
113
99
class AvahiService(object):
114
100
"""An Avahi (Zeroconf) service.
115
116
101
Attributes:
117
102
interface: integer; avahi.IF_UNSPEC or an interface index.
118
103
Used to optionally bind to the specified interface.
119
name: string; Example: u'Mandos'
120
type: string; Example: u'_mandos._tcp'.
104
name: string; Example: 'Mandos'
105
type: string; Example: '_mandos._tcp'.
121
106
See <http://www.dns-sd.org/ServiceTypes.html>
122
107
port: integer; what port to announce
123
108
TXT: list of strings; TXT record for the service
126
111
max_renames: integer; maximum number of renames
127
112
rename_count: integer; counter so we only rename after collisions
128
113
a sensible number of times
129
group: D-Bus Entry Group
130
server: D-Bus Server
131
bus: dbus.SystemBus()
132
114
"""
133
115
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
134
116
servicetype = None, port = None, TXT = None,
135
domain = u"", host = u"", max_renames = 32768,
136
protocol = avahi.PROTO_UNSPEC, bus = None):
117
domain = "", host = "", max_renames = 32768,
118
protocol = avahi.PROTO_UNSPEC):
137
119
self.interface = interface
138
120
self.name = name
139
121
self.type = servicetype
144
126
self.rename_count = 0
145
127
self.max_renames = max_renames
146
128
self.protocol = protocol
147
self.group = None # our entry group
148
self.server = None
149
self.bus = bus
150
129
def rename(self):
151
130
"""Derived from the Avahi example code"""
152
131
if self.rename_count >= self.max_renames:
154
133
u" after %i retries, exiting.",
155
134
self.rename_count)
156
135
raise AvahiServiceError(u"Too many renames")
157
self.name = self.server.GetAlternativeServiceName(self.name)
136
self.name = server.GetAlternativeServiceName(self.name)
158
137
logger.info(u"Changing Zeroconf service name to %r ...",
159
unicode(self.name))
138
str(self.name))
160
139
syslogger.setFormatter(logging.Formatter
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
163
% self.name))
140
('Mandos (%s): %%(levelname)s:'
141
' %%(message)s' % self.name))
164
142
self.remove()
165
143
self.add()
166
144
self.rename_count += 1
167
145
def remove(self):
168
146
"""Derived from the Avahi example code"""
169
if self.group is not None:
170
self.group.Reset()
147
if group is not None:
148
group.Reset()
171
149
def add(self):
172
150
"""Derived from the Avahi example code"""
173
if self.group is None:
174
self.group = dbus.Interface(
175
self.bus.get_object(avahi.DBUS_NAME,
176
self.server.EntryGroupNew()),
177
avahi.DBUS_INTERFACE_ENTRY_GROUP)
178
self.group.connect_to_signal('StateChanged',
179
self
180
.entry_group_state_changed)
151
global group
152
if group is None:
153
group = dbus.Interface(bus.get_object
154
(avahi.DBUS_NAME,
155
server.EntryGroupNew()),
156
avahi.DBUS_INTERFACE_ENTRY_GROUP)
157
group.connect_to_signal('StateChanged',
158
entry_group_state_changed)
181
159
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
182
self.name, self.type)
183
self.group.AddService(
184
self.interface,
185
self.protocol,
186
dbus.UInt32(0), # flags
187
self.name, self.type,
188
self.domain, self.host,
189
dbus.UInt16(self.port),
190
avahi.string_array_to_txt_array(self.TXT))
191
self.group.Commit()
192
def entry_group_state_changed(self, state, error):
193
"""Derived from the Avahi example code"""
194
logger.debug(u"Avahi state change: %i", state)
195
196
if state == avahi.ENTRY_GROUP_ESTABLISHED:
197
logger.debug(u"Zeroconf service established.")
198
elif state == avahi.ENTRY_GROUP_COLLISION:
199
logger.warning(u"Zeroconf service name collision.")
200
self.rename()
201
elif state == avahi.ENTRY_GROUP_FAILURE:
202
logger.critical(u"Avahi: Error in group state changed %s",
203
unicode(error))
204
raise AvahiGroupError(u"State changed: %s"
205
% unicode(error))
206
def cleanup(self):
207
"""Derived from the Avahi example code"""
208
if self.group is not None:
209
self.group.Free()
210
self.group = None
211
def server_state_changed(self, state):
212
"""Derived from the Avahi example code"""
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
215
self.remove()
216
elif state == avahi.SERVER_RUNNING:
217
self.add()
218
def activate(self):
219
"""Derived from the Avahi example code"""
220
if self.server is None:
221
self.server = dbus.Interface(
222
self.bus.get_object(avahi.DBUS_NAME,
223
avahi.DBUS_PATH_SERVER),
224
avahi.DBUS_INTERFACE_SERVER)
225
self.server.connect_to_signal(u"StateChanged",
226
self.server_state_changed)
227
self.server_state_changed(self.server.GetState())
228
229
230
class Client(object):
160
service.name, service.type)
161
group.AddService(
162
self.interface, # interface
163
self.protocol, # protocol
164
dbus.UInt32(0), # flags
165
self.name, self.type,
166
self.domain, self.host,
167
dbus.UInt16(self.port),
168
avahi.string_array_to_txt_array(self.TXT))
169
group.Commit()
170
171
# From the Avahi example code:
172
group = None # our entry group
173
# End of Avahi example code
174
175
176
def _datetime_to_dbus(dt, variant_level=0):
177
"""Convert a UTC datetime.datetime() to a D-Bus type."""
178
return dbus.String(dt.isoformat(), variant_level=variant_level)
179
180
181
class Client(dbus.service.Object):
231
182
"""A representation of a client host served by this server.
232
233
183
Attributes:
234
184
name: string; from the config file, used in log messages and
235
185
D-Bus identifiers
249
199
to see if the client lives.
250
200
'None' if no process is running.
251
201
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
202
disable_initiator_tag: - '' -
253
203
checker_callback_tag: - '' -
254
204
checker_command: string; External command which is run to check if
255
205
client lives. %() expansions are done at
256
206
runtime with vars(self) as dict, so that for
257
207
instance %(name)s can be used in the command.
258
208
current_checker_command: string; current running checker_command
209
use_dbus: bool(); Whether to provide D-Bus interface and signals
210
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
259
211
"""
260
261
@staticmethod
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
267
268
212
def timeout_milliseconds(self):
269
213
"Return the 'timeout' attribute in milliseconds"
270
return self._timedelta_to_milliseconds(self.timeout)
214
return ((self.timeout.days * 24 * 60 * 60 * 1000)
215
+ (self.timeout.seconds * 1000)
216
+ (self.timeout.microseconds // 1000))
271
217
272
218
def interval_milliseconds(self):
273
219
"Return the 'interval' attribute in milliseconds"
274
return self._timedelta_to_milliseconds(self.interval)
220
return ((self.interval.days * 24 * 60 * 60 * 1000)
221
+ (self.interval.seconds * 1000)
222
+ (self.interval.microseconds // 1000))
275
223
276
def __init__(self, name = None, disable_hook=None, config=None):
224
def __init__(self, name = None, disable_hook=None, config=None,
225
use_dbus=True):
277
226
"""Note: the 'checker' key in 'config' sets the
278
227
'checker_command' attribute and *not* the 'checker'
279
228
attribute."""
281
230
if config is None:
282
231
config = {}
283
232
logger.debug(u"Creating client %r", self.name)
233
self.use_dbus = False # During __init__
284
234
# Uppercase and remove spaces from fingerprint for later
285
235
# comparison purposes with return value from the fingerprint()
286
236
# function
287
self.fingerprint = (config[u"fingerprint"].upper()
237
self.fingerprint = (config["fingerprint"].upper()
288
238
.replace(u" ", u""))
289
239
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
240
if "secret" in config:
241
self.secret = config["secret"].decode(u"base64")
242
elif "secfile" in config:
293
243
with closing(open(os.path.expanduser
294
244
(os.path.expandvars
295
(config[u"secfile"])),
296
"rb")) as secfile:
245
(config["secfile"])))) as secfile:
297
246
self.secret = secfile.read()
298
247
else:
299
248
raise TypeError(u"No secret or secfile for client %s"
300
249
% self.name)
301
self.host = config.get(u"host", u"")
250
self.host = config.get("host", "")
302
251
self.created = datetime.datetime.utcnow()
303
252
self.enabled = False
304
253
self.last_enabled = None
305
254
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
255
self.timeout = string_to_delta(config["timeout"])
256
self.interval = string_to_delta(config["interval"])
308
257
self.disable_hook = disable_hook
309
258
self.checker = None
310
259
self.checker_initiator_tag = None
311
260
self.disable_initiator_tag = None
312
261
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
262
self.checker_command = config["checker"]
314
263
self.current_checker_command = None
315
264
self.last_connect = None
265
# Only now, when this client is initialized, can it show up on
266
# the D-Bus
267
self.use_dbus = use_dbus
268
if self.use_dbus:
269
self.dbus_object_path = (dbus.ObjectPath
270
("/clients/"
271
+ self.name.replace(".", "_")))
272
dbus.service.Object.__init__(self, bus,
273
self.dbus_object_path)
316
274
317
275
def enable(self):
318
276
"""Start this client's checker and timeout hooks"""
319
if getattr(self, u"enabled", False):
320
# Already enabled
321
return
322
277
self.last_enabled = datetime.datetime.utcnow()
323
278
# Schedule a new checker to be started an 'interval' from now,
324
279
# and every interval from then on.
332
287
(self.timeout_milliseconds(),
333
288
self.disable))
334
289
self.enabled = True
290
if self.use_dbus:
291
# Emit D-Bus signals
292
self.PropertyChanged(dbus.String(u"enabled"),
293
dbus.Boolean(True, variant_level=1))
294
self.PropertyChanged(dbus.String(u"last_enabled"),
295
(_datetime_to_dbus(self.last_enabled,
296
variant_level=1)))
335
297
336
298
def disable(self):
337
299
"""Disable this client."""
338
300
if not getattr(self, "enabled", False):
339
301
return False
340
302
logger.info(u"Disabling client %s", self.name)
341
if getattr(self, u"disable_initiator_tag", False):
303
if getattr(self, "disable_initiator_tag", False):
342
304
gobject.source_remove(self.disable_initiator_tag)
343
305
self.disable_initiator_tag = None
344
if getattr(self, u"checker_initiator_tag", False):
306
if getattr(self, "checker_initiator_tag", False):
345
307
gobject.source_remove(self.checker_initiator_tag)
346
308
self.checker_initiator_tag = None
347
309
self.stop_checker()
348
310
if self.disable_hook:
349
311
self.disable_hook(self)
350
312
self.enabled = False
313
if self.use_dbus:
314
# Emit D-Bus signal
315
self.PropertyChanged(dbus.String(u"enabled"),
316
dbus.Boolean(False, variant_level=1))
351
317
# Do not run this again if called by a gobject.timeout_add
352
318
return False
353
319
359
325
"""The checker has completed, so take appropriate actions."""
360
326
self.checker_callback_tag = None
361
327
self.checker = None
328
if self.use_dbus:
329
# Emit D-Bus signal
330
self.PropertyChanged(dbus.String(u"checker_running"),
331
dbus.Boolean(False, variant_level=1))
362
332
if os.WIFEXITED(condition):
363
333
exitstatus = os.WEXITSTATUS(condition)
364
334
if exitstatus == 0:
368
338
else:
369
339
logger.info(u"Checker for %(name)s failed",
370
340
vars(self))
341
if self.use_dbus:
342
# Emit D-Bus signal
343
self.CheckerCompleted(dbus.Int16(exitstatus),
344
dbus.Int64(condition),
345
dbus.String(command))
371
346
else:
372
347
logger.warning(u"Checker for %(name)s crashed?",
373
348
vars(self))
349
if self.use_dbus:
350
# Emit D-Bus signal
351
self.CheckerCompleted(dbus.Int16(-1),
352
dbus.Int64(condition),
353
dbus.String(command))
374
354
375
355
def checked_ok(self):
376
356
"""Bump up the timeout for this client.
377
378
357
This should only be called when the client has been seen,
379
358
alive and well.
380
359
"""
383
362
self.disable_initiator_tag = (gobject.timeout_add
384
363
(self.timeout_milliseconds(),
385
364
self.disable))
365
if self.use_dbus:
366
# Emit D-Bus signal
367
self.PropertyChanged(
368
dbus.String(u"last_checked_ok"),
369
(_datetime_to_dbus(self.last_checked_ok,
370
variant_level=1)))
386
371
387
372
def start_checker(self):
388
373
"""Start a new checker subprocess if one is not running.
389
390
374
If a checker already exists, leave it running and do
391
375
nothing."""
392
376
# The reason for not killing a running checker is that if we
399
383
# is as it should be.
400
384
401
385
# If a checker exists, make sure it is not a zombie
402
try:
386
if self.checker is not None:
403
387
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
404
except (AttributeError, OSError), error:
405
if (isinstance(error, OSError)
406
and error.errno != errno.ECHILD):
407
raise error
408
else:
409
388
if pid:
410
logger.warning(u"Checker was a zombie")
389
logger.warning("Checker was a zombie")
411
390
gobject.source_remove(self.checker_callback_tag)
412
391
self.checker_callback(pid, status,
413
392
self.current_checker_command)
418
397
command = self.checker_command % self.host
419
398
except TypeError:
420
399
# Escape attributes for the shell
421
escaped_attrs = dict((key,
422
re.escape(unicode(str(val),
423
errors=
424
u'replace')))
400
escaped_attrs = dict((key, re.escape(str(val)))
425
401
for key, val in
426
402
vars(self).iteritems())
427
403
try:
430
406
logger.error(u'Could not format string "%s":'
431
407
u' %s', self.checker_command, error)
432
408
return True # Try again later
433
self.current_checker_command = command
409
self.current_checker_command = command
434
410
try:
435
411
logger.info(u"Starting checker %r for %s",
436
412
command, self.name)
440
416
# always replaced by /dev/null.)
441
417
self.checker = subprocess.Popen(command,
442
418
close_fds=True,
443
shell=True, cwd=u"/")
419
shell=True, cwd="/")
420
if self.use_dbus:
421
# Emit D-Bus signal
422
self.CheckerStarted(command)
423
self.PropertyChanged(
424
dbus.String("checker_running"),
425
dbus.Boolean(True, variant_level=1))
444
426
self.checker_callback_tag = (gobject.child_watch_add
445
427
(self.checker.pid,
446
428
self.checker_callback,
462
444
if self.checker_callback_tag:
463
445
gobject.source_remove(self.checker_callback_tag)
464
446
self.checker_callback_tag = None
465
if getattr(self, u"checker", None) is None:
447
if getattr(self, "checker", None) is None:
466
448
return
467
449
logger.debug(u"Stopping checker for %(name)s", vars(self))
468
450
try:
474
456
if error.errno != errno.ESRCH: # No such process
475
457
raise
476
458
self.checker = None
459
if self.use_dbus:
460
self.PropertyChanged(dbus.String(u"checker_running"),
461
dbus.Boolean(False, variant_level=1))
477
462
478
463
def still_valid(self):
479
464
"""Has the timeout not yet passed for this client?"""
480
if not getattr(self, u"enabled", False):
465
if not getattr(self, "enabled", False):
481
466
return False
482
467
now = datetime.datetime.utcnow()
483
468
if self.last_checked_ok is None:
484
469
return now < (self.created + self.timeout)
485
470
else:
486
471
return now < (self.last_checked_ok + self.timeout)
487
488
489
def dbus_service_property(dbus_interface, signature=u"v",
490
access=u"readwrite", byte_arrays=False):
491
"""Decorators for marking methods of a DBusObjectWithProperties to
492
become properties on the D-Bus.
493
494
The decorated method will be called with no arguments by "Get"
495
and with one argument by "Set".
496
497
The parameters, where they are supported, are the same as
498
dbus.service.method, except there is only "signature", since the
499
type from Get() and the type sent to Set() is the same.
500
"""
501
def decorator(func):
502
func._dbus_is_property = True
503
func._dbus_interface = dbus_interface
504
func._dbus_signature = signature
505
func._dbus_access = access
506
func._dbus_name = func.__name__
507
if func._dbus_name.endswith(u"_dbus_property"):
508
func._dbus_name = func._dbus_name[:-14]
509
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
510
return func
511
return decorator
512
513
514
class DBusPropertyException(dbus.exceptions.DBusException):
515
"""A base class for D-Bus property-related exceptions
516
"""
517
def __unicode__(self):
518
return unicode(str(self))
519
520
521
class DBusPropertyAccessException(DBusPropertyException):
522
"""A property's access permissions disallows an operation.
523
"""
524
pass
525
526
527
class DBusPropertyNotFound(DBusPropertyException):
528
"""An attempt was made to access a non-existing property.
529
"""
530
pass
531
532
533
class DBusObjectWithProperties(dbus.service.Object):
534
"""A D-Bus object with properties.
535
536
Classes inheriting from this can use the dbus_service_property
537
decorator to expose methods as D-Bus properties. It exposes the
538
standard Get(), Set(), and GetAll() methods on the D-Bus.
539
"""
540
541
@staticmethod
542
def _is_dbus_property(obj):
543
return getattr(obj, u"_dbus_is_property", False)
544
545
def _get_all_dbus_properties(self):
546
"""Returns a generator of (name, attribute) pairs
547
"""
548
return ((prop._dbus_name, prop)
549
for name, prop in
550
inspect.getmembers(self, self._is_dbus_property))
551
552
def _get_dbus_property(self, interface_name, property_name):
553
"""Returns a bound method if one exists which is a D-Bus
554
property with the specified name and interface.
555
"""
556
for name in (property_name,
557
property_name + u"_dbus_property"):
558
prop = getattr(self, name, None)
559
if (prop is None
560
or not self._is_dbus_property(prop)
561
or prop._dbus_name != property_name
562
or (interface_name and prop._dbus_interface
563
and interface_name != prop._dbus_interface)):
564
continue
565
return prop
566
# No such property
567
raise DBusPropertyNotFound(self.dbus_object_path + u":"
568
+ interface_name + u"."
569
+ property_name)
570
571
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
572
out_signature=u"v")
573
def Get(self, interface_name, property_name):
574
"""Standard D-Bus property Get() method, see D-Bus standard.
575
"""
576
prop = self._get_dbus_property(interface_name, property_name)
577
if prop._dbus_access == u"write":
578
raise DBusPropertyAccessException(property_name)
579
value = prop()
580
if not hasattr(value, u"variant_level"):
581
return value
582
return type(value)(value, variant_level=value.variant_level+1)
583
584
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
585
def Set(self, interface_name, property_name, value):
586
"""Standard D-Bus property Set() method, see D-Bus standard.
587
"""
588
prop = self._get_dbus_property(interface_name, property_name)
589
if prop._dbus_access == u"read":
590
raise DBusPropertyAccessException(property_name)
591
if prop._dbus_get_args_options[u"byte_arrays"]:
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
document = xml.dom.minidom.parseString(xmlstring)
631
del 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
return xmlstring
663
664
665
class ClientDBus(Client, DBusObjectWithProperties):
666
"""A Client class using D-Bus
667
668
Attributes:
669
dbus_object_path: dbus.ObjectPath
670
bus: dbus.SystemBus()
671
"""
672
# dbus.service.Object doesn't use super(), so we can't either.
673
674
def __init__(self, bus = None, *args, **kwargs):
675
self.bus = bus
676
Client.__init__(self, *args, **kwargs)
677
# Only now, when this client is initialized, can it show up on
678
# the D-Bus
679
self.dbus_object_path = (dbus.ObjectPath
680
(u"/clients/"
681
+ self.name.replace(u".", u"_")))
682
DBusObjectWithProperties.__init__(self, self.bus,
683
self.dbus_object_path)
684
685
@staticmethod
686
def _datetime_to_dbus(dt, variant_level=0):
687
"""Convert a UTC datetime.datetime() to a D-Bus type."""
688
return dbus.String(dt.isoformat(),
689
variant_level=variant_level)
690
691
def enable(self):
692
oldstate = getattr(self, u"enabled", False)
693
r = Client.enable(self)
694
if oldstate != self.enabled:
695
# Emit D-Bus signals
696
self.PropertyChanged(dbus.String(u"enabled"),
697
dbus.Boolean(True, variant_level=1))
698
self.PropertyChanged(
699
dbus.String(u"last_enabled"),
700
self._datetime_to_dbus(self.last_enabled,
701
variant_level=1))
702
return r
703
704
def disable(self, signal = True):
705
oldstate = getattr(self, u"enabled", False)
706
r = Client.disable(self)
707
if signal and oldstate != self.enabled:
708
# Emit D-Bus signal
709
self.PropertyChanged(dbus.String(u"enabled"),
710
dbus.Boolean(False, variant_level=1))
711
return r
712
713
def __del__(self, *args, **kwargs):
714
try:
715
self.remove_from_connection()
716
except LookupError:
717
pass
718
if hasattr(DBusObjectWithProperties, u"__del__"):
719
DBusObjectWithProperties.__del__(self, *args, **kwargs)
720
Client.__del__(self, *args, **kwargs)
721
722
def checker_callback(self, pid, condition, command,
723
*args, **kwargs):
724
self.checker_callback_tag = None
725
self.checker = None
726
# Emit D-Bus signal
727
self.PropertyChanged(dbus.String(u"checker_running"),
728
dbus.Boolean(False, variant_level=1))
729
if os.WIFEXITED(condition):
730
exitstatus = os.WEXITSTATUS(condition)
731
# Emit D-Bus signal
732
self.CheckerCompleted(dbus.Int16(exitstatus),
733
dbus.Int64(condition),
734
dbus.String(command))
735
else:
736
# Emit D-Bus signal
737
self.CheckerCompleted(dbus.Int16(-1),
738
dbus.Int64(condition),
739
dbus.String(command))
740
741
return Client.checker_callback(self, pid, condition, command,
742
*args, **kwargs)
743
744
def checked_ok(self, *args, **kwargs):
745
r = Client.checked_ok(self, *args, **kwargs)
746
# Emit D-Bus signal
747
self.PropertyChanged(
748
dbus.String(u"last_checked_ok"),
749
(self._datetime_to_dbus(self.last_checked_ok,
750
variant_level=1)))
751
return r
752
753
def start_checker(self, *args, **kwargs):
754
old_checker = self.checker
755
if self.checker is not None:
756
old_checker_pid = self.checker.pid
757
else:
758
old_checker_pid = None
759
r = Client.start_checker(self, *args, **kwargs)
760
# Only if new checker process was started
761
if (self.checker is not None
762
and old_checker_pid != self.checker.pid):
763
# Emit D-Bus signal
764
self.CheckerStarted(self.current_checker_command)
765
self.PropertyChanged(
766
dbus.String(u"checker_running"),
767
dbus.Boolean(True, variant_level=1))
768
return r
769
770
def stop_checker(self, *args, **kwargs):
771
old_checker = getattr(self, u"checker", None)
772
r = Client.stop_checker(self, *args, **kwargs)
773
if (old_checker is not None
774
and getattr(self, u"checker", None) is None):
775
self.PropertyChanged(dbus.String(u"checker_running"),
776
dbus.Boolean(False, variant_level=1))
777
return r
778
472
779
473
## D-Bus methods & signals
780
474
_interface = u"se.bsnet.fukt.Mandos.Client"
781
475
782
476
# CheckedOK - method
783
@dbus.service.method(_interface)
784
def CheckedOK(self):
785
return self.checked_ok()
477
CheckedOK = dbus.service.method(_interface)(checked_ok)
478
CheckedOK.__name__ = "CheckedOK"
786
479
787
480
# CheckerCompleted - signal
788
@dbus.service.signal(_interface, signature=u"nxs")
481
@dbus.service.signal(_interface, signature="nxs")
789
482
def CheckerCompleted(self, exitcode, waitstatus, command):
790
483
"D-Bus signal"
791
484
pass
792
485
793
486
# CheckerStarted - signal
794
@dbus.service.signal(_interface, signature=u"s")
487
@dbus.service.signal(_interface, signature="s")
795
488
def CheckerStarted(self, command):
796
489
"D-Bus signal"
797
490
pass
798
491
492
# GetAllProperties - method
493
@dbus.service.method(_interface, out_signature="a{sv}")
494
def GetAllProperties(self):
495
"D-Bus method"
496
return dbus.Dictionary({
497
dbus.String("name"):
498
dbus.String(self.name, variant_level=1),
499
dbus.String("fingerprint"):
500
dbus.String(self.fingerprint, variant_level=1),
501
dbus.String("host"):
502
dbus.String(self.host, variant_level=1),
503
dbus.String("created"):
504
_datetime_to_dbus(self.created, variant_level=1),
505
dbus.String("last_enabled"):
506
(_datetime_to_dbus(self.last_enabled,
507
variant_level=1)
508
if self.last_enabled is not None
509
else dbus.Boolean(False, variant_level=1)),
510
dbus.String("enabled"):
511
dbus.Boolean(self.enabled, variant_level=1),
512
dbus.String("last_checked_ok"):
513
(_datetime_to_dbus(self.last_checked_ok,
514
variant_level=1)
515
if self.last_checked_ok is not None
516
else dbus.Boolean (False, variant_level=1)),
517
dbus.String("timeout"):
518
dbus.UInt64(self.timeout_milliseconds(),
519
variant_level=1),
520
dbus.String("interval"):
521
dbus.UInt64(self.interval_milliseconds(),
522
variant_level=1),
523
dbus.String("checker"):
524
dbus.String(self.checker_command,
525
variant_level=1),
526
dbus.String("checker_running"):
527
dbus.Boolean(self.checker is not None,
528
variant_level=1),
529
dbus.String("object_path"):
530
dbus.ObjectPath(self.dbus_object_path,
531
variant_level=1)
532
}, signature="sv")
533
534
# IsStillValid - method
535
IsStillValid = (dbus.service.method(_interface, out_signature="b")
536
(still_valid))
537
IsStillValid.__name__ = "IsStillValid"
538
799
539
# PropertyChanged - signal
800
@dbus.service.signal(_interface, signature=u"sv")
540
@dbus.service.signal(_interface, signature="sv")
801
541
def PropertyChanged(self, property, value):
802
542
"D-Bus signal"
803
543
pass
804
544
805
# ReceivedSecret - signal
806
@dbus.service.signal(_interface)
807
def ReceivedSecret(self):
808
"D-Bus signal"
809
pass
810
811
# Rejected - signal
812
@dbus.service.signal(_interface)
813
def Rejected(self):
814
"D-Bus signal"
815
pass
545
# SetChecker - method
546
@dbus.service.method(_interface, in_signature="s")
547
def SetChecker(self, checker):
548
"D-Bus setter method"
549
self.checker_command = checker
550
# Emit D-Bus signal
551
self.PropertyChanged(dbus.String(u"checker"),
552
dbus.String(self.checker_command,
553
variant_level=1))
554
555
# SetHost - method
556
@dbus.service.method(_interface, in_signature="s")
557
def SetHost(self, host):
558
"D-Bus setter method"
559
self.host = host
560
# Emit D-Bus signal
561
self.PropertyChanged(dbus.String(u"host"),
562
dbus.String(self.host, variant_level=1))
563
564
# SetInterval - method
565
@dbus.service.method(_interface, in_signature="t")
566
def SetInterval(self, milliseconds):
567
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
568
# Emit D-Bus signal
569
self.PropertyChanged(dbus.String(u"interval"),
570
(dbus.UInt64(self.interval_milliseconds(),
571
variant_level=1)))
572
573
# SetSecret - method
574
@dbus.service.method(_interface, in_signature="ay",
575
byte_arrays=True)
576
def SetSecret(self, secret):
577
"D-Bus setter method"
578
self.secret = str(secret)
579
580
# SetTimeout - method
581
@dbus.service.method(_interface, in_signature="t")
582
def SetTimeout(self, milliseconds):
583
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
584
# Emit D-Bus signal
585
self.PropertyChanged(dbus.String(u"timeout"),
586
(dbus.UInt64(self.timeout_milliseconds(),
587
variant_level=1)))
816
588
817
589
# Enable - method
818
@dbus.service.method(_interface)
819
def Enable(self):
820
"D-Bus method"
821
self.enable()
590
Enable = dbus.service.method(_interface)(enable)
591
Enable.__name__ = "Enable"
822
592
823
593
# StartChecker - method
824
594
@dbus.service.method(_interface)
833
603
self.disable()
834
604
835
605
# StopChecker - method
836
@dbus.service.method(_interface)
837
def StopChecker(self):
838
self.stop_checker()
839
840
# name - property
841
@dbus_service_property(_interface, signature=u"s", access=u"read")
842
def name_dbus_property(self):
843
return dbus.String(self.name)
844
845
# fingerprint - property
846
@dbus_service_property(_interface, signature=u"s", access=u"read")
847
def fingerprint_dbus_property(self):
848
return dbus.String(self.fingerprint)
849
850
# host - property
851
@dbus_service_property(_interface, signature=u"s",
852
access=u"readwrite")
853
def host_dbus_property(self, value=None):
854
if value is None: # get
855
return dbus.String(self.host)
856
self.host = value
857
# Emit D-Bus signal
858
self.PropertyChanged(dbus.String(u"host"),
859
dbus.String(value, variant_level=1))
860
861
# created - property
862
@dbus_service_property(_interface, signature=u"s", access=u"read")
863
def created_dbus_property(self):
864
return dbus.String(self._datetime_to_dbus(self.created))
865
866
# last_enabled - property
867
@dbus_service_property(_interface, signature=u"s", access=u"read")
868
def last_enabled_dbus_property(self):
869
if self.last_enabled is None:
870
return dbus.String(u"")
871
return dbus.String(self._datetime_to_dbus(self.last_enabled))
872
873
# enabled - property
874
@dbus_service_property(_interface, signature=u"b",
875
access=u"readwrite")
876
def enabled_dbus_property(self, value=None):
877
if value is None: # get
878
return dbus.Boolean(self.enabled)
879
if value:
880
self.enable()
881
else:
882
self.disable()
883
884
# last_checked_ok - property
885
@dbus_service_property(_interface, signature=u"s",
886
access=u"readwrite")
887
def last_checked_ok_dbus_property(self, value=None):
888
if value is not None:
889
self.checked_ok()
890
return
891
if self.last_checked_ok is None:
892
return dbus.String(u"")
893
return dbus.String(self._datetime_to_dbus(self
894
.last_checked_ok))
895
896
# timeout - property
897
@dbus_service_property(_interface, signature=u"t",
898
access=u"readwrite")
899
def timeout_dbus_property(self, value=None):
900
if value is None: # get
901
return dbus.UInt64(self.timeout_milliseconds())
902
self.timeout = datetime.timedelta(0, 0, 0, value)
903
# Emit D-Bus signal
904
self.PropertyChanged(dbus.String(u"timeout"),
905
dbus.UInt64(value, variant_level=1))
906
if getattr(self, u"disable_initiator_tag", None) is None:
907
return
908
# Reschedule timeout
909
gobject.source_remove(self.disable_initiator_tag)
910
self.disable_initiator_tag = None
911
time_to_die = (self.
912
_timedelta_to_milliseconds((self
913
.last_checked_ok
914
+ self.timeout)
915
- datetime.datetime
916
.utcnow()))
917
if time_to_die <= 0:
918
# The timeout has passed
919
self.disable()
920
else:
921
self.disable_initiator_tag = (gobject.timeout_add
922
(time_to_die, self.disable))
923
924
# interval - property
925
@dbus_service_property(_interface, signature=u"t",
926
access=u"readwrite")
927
def interval_dbus_property(self, value=None):
928
if value is None: # get
929
return dbus.UInt64(self.interval_milliseconds())
930
self.interval = datetime.timedelta(0, 0, 0, value)
931
# Emit D-Bus signal
932
self.PropertyChanged(dbus.String(u"interval"),
933
dbus.UInt64(value, variant_level=1))
934
if getattr(self, u"checker_initiator_tag", None) is None:
935
return
936
# Reschedule checker run
937
gobject.source_remove(self.checker_initiator_tag)
938
self.checker_initiator_tag = (gobject.timeout_add
939
(value, self.start_checker))
940
self.start_checker() # Start one now, too
941
942
# checker - property
943
@dbus_service_property(_interface, signature=u"s",
944
access=u"readwrite")
945
def checker_dbus_property(self, value=None):
946
if value is None: # get
947
return dbus.String(self.checker_command)
948
self.checker_command = value
949
# Emit D-Bus signal
950
self.PropertyChanged(dbus.String(u"checker"),
951
dbus.String(self.checker_command,
952
variant_level=1))
953
954
# checker_running - property
955
@dbus_service_property(_interface, signature=u"b",
956
access=u"readwrite")
957
def checker_running_dbus_property(self, value=None):
958
if value is None: # get
959
return dbus.Boolean(self.checker is not None)
960
if value:
961
self.start_checker()
962
else:
963
self.stop_checker()
964
965
# object_path - property
966
@dbus_service_property(_interface, signature=u"o", access=u"read")
967
def object_path_dbus_property(self):
968
return self.dbus_object_path # is already a dbus.ObjectPath
969
970
# secret = property
971
@dbus_service_property(_interface, signature=u"ay",
972
access=u"write", byte_arrays=True)
973
def secret_dbus_property(self, value):
974
self.secret = str(value)
606
StopChecker = dbus.service.method(_interface)(stop_checker)
607
StopChecker.__name__ = "StopChecker"
975
608
976
609
del _interface
977
610
978
611
979
class ClientHandler(socketserver.BaseRequestHandler, object):
980
"""A class to handle client connections.
981
982
Instantiated once for each connection to handle it.
612
def peer_certificate(session):
613
"Return the peer's OpenPGP certificate as a bytestring"
614
# If not an OpenPGP certificate...
615
if (gnutls.library.functions
616
.gnutls_certificate_type_get(session._c_object)
617
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
618
# ...do the normal thing
619
return session.peer_certificate
620
list_size = ctypes.c_uint(1)
621
cert_list = (gnutls.library.functions
622
.gnutls_certificate_get_peers
623
(session._c_object, ctypes.byref(list_size)))
624
if not bool(cert_list) and list_size.value != 0:
625
raise gnutls.errors.GNUTLSError("error getting peer"
626
" certificate")
627
if list_size.value == 0:
628
return None
629
cert = cert_list[0]
630
return ctypes.string_at(cert.data, cert.size)
631
632
633
def fingerprint(openpgp):
634
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
635
# New GnuTLS "datum" with the OpenPGP public key
636
datum = (gnutls.library.types
637
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
638
ctypes.POINTER
639
(ctypes.c_ubyte)),
640
ctypes.c_uint(len(openpgp))))
641
# New empty GnuTLS certificate
642
crt = gnutls.library.types.gnutls_openpgp_crt_t()
643
(gnutls.library.functions
644
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
645
# Import the OpenPGP public key into the certificate
646
(gnutls.library.functions
647
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
648
gnutls.library.constants
649
.GNUTLS_OPENPGP_FMT_RAW))
650
# Verify the self signature in the key
651
crtverify = ctypes.c_uint()
652
(gnutls.library.functions
653
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
654
if crtverify.value != 0:
655
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
656
raise gnutls.errors.CertificateSecurityError("Verify failed")
657
# New buffer for the fingerprint
658
buf = ctypes.create_string_buffer(20)
659
buf_len = ctypes.c_size_t()
660
# Get the fingerprint from the certificate into the buffer
661
(gnutls.library.functions
662
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
663
ctypes.byref(buf_len)))
664
# Deinit the certificate
665
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
666
# Convert the buffer to a Python bytestring
667
fpr = ctypes.string_at(buf, buf_len.value)
668
# Convert the bytestring to hexadecimal notation
669
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
670
return hex_fpr
671
672
673
class TCP_handler(SocketServer.BaseRequestHandler, object):
674
"""A TCP request handler class.
675
Instantiated by IPv6_TCPServer for each request to handle it.
983
676
Note: This will run in its own forked process."""
984
677
985
678
def handle(self):
986
679
logger.info(u"TCP connection from: %s",
987
680
unicode(self.client_address))
988
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
989
# Open IPC pipe to parent process
990
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
991
session = (gnutls.connection
992
.ClientSession(self.request,
993
gnutls.connection
994
.X509Credentials()))
995
996
line = self.request.makefile().readline()
997
logger.debug(u"Protocol version: %r", line)
998
try:
999
if int(line.strip().split()[0]) > 1:
1000
raise RuntimeError
1001
except (ValueError, IndexError, RuntimeError), error:
1002
logger.error(u"Unknown protocol version: %s", error)
1003
return
1004
1005
# Note: gnutls.connection.X509Credentials is really a
1006
# generic GnuTLS certificate credentials object so long as
1007
# no X.509 keys are added to it. Therefore, we can use it
1008
# here despite using OpenPGP certificates.
1009
1010
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1011
# u"+AES-256-CBC", u"+SHA1",
1012
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1013
# u"+DHE-DSS"))
1014
# Use a fallback default, since this MUST be set.
1015
priority = self.server.gnutls_priority
1016
if priority is None:
1017
priority = u"NORMAL"
1018
(gnutls.library.functions
1019
.gnutls_priority_set_direct(session._c_object,
1020
priority, None))
1021
1022
try:
1023
session.handshake()
1024
except gnutls.errors.GNUTLSError, error:
1025
logger.warning(u"Handshake failed: %s", error)
1026
# Do not run session.bye() here: the session is not
1027
# established. Just abandon the request.
1028
return
1029
logger.debug(u"Handshake succeeded")
1030
try:
1031
fpr = self.fingerprint(self.peer_certificate(session))
1032
except (TypeError, gnutls.errors.GNUTLSError), error:
1033
logger.warning(u"Bad certificate: %s", error)
1034
session.bye()
1035
return
1036
logger.debug(u"Fingerprint: %s", fpr)
1037
1038
for c in self.server.clients:
1039
if c.fingerprint == fpr:
1040
client = c
1041
break
1042
else:
1043
ipc.write(u"NOTFOUND %s %s\n"
1044
% (fpr, unicode(self.client_address)))
1045
session.bye()
1046
return
1047
# Have to check if client.still_valid(), since it is
1048
# possible that the client timed out while establishing
1049
# the GnuTLS session.
1050
if not client.still_valid():
1051
ipc.write(u"INVALID %s\n" % client.name)
1052
session.bye()
1053
return
1054
ipc.write(u"SENDING %s\n" % client.name)
1055
sent_size = 0
1056
while sent_size < len(client.secret):
1057
sent = session.send(client.secret[sent_size:])
1058
logger.debug(u"Sent: %d, remaining: %d",
1059
sent, len(client.secret)
1060
- (sent_size + sent))
1061
sent_size += sent
1062
session.bye()
1063
1064
@staticmethod
1065
def peer_certificate(session):
1066
"Return the peer's OpenPGP certificate as a bytestring"
1067
# If not an OpenPGP certificate...
1068
if (gnutls.library.functions
1069
.gnutls_certificate_type_get(session._c_object)
1070
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1071
# ...do the normal thing
1072
return session.peer_certificate
1073
list_size = ctypes.c_uint(1)
1074
cert_list = (gnutls.library.functions
1075
.gnutls_certificate_get_peers
1076
(session._c_object, ctypes.byref(list_size)))
1077
if not bool(cert_list) and list_size.value != 0:
1078
raise gnutls.errors.GNUTLSError(u"error getting peer"
1079
u" certificate")
1080
if list_size.value == 0:
1081
return None
1082
cert = cert_list[0]
1083
return ctypes.string_at(cert.data, cert.size)
1084
1085
@staticmethod
1086
def fingerprint(openpgp):
1087
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1088
# New GnuTLS "datum" with the OpenPGP public key
1089
datum = (gnutls.library.types
1090
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1091
ctypes.POINTER
1092
(ctypes.c_ubyte)),
1093
ctypes.c_uint(len(openpgp))))
1094
# New empty GnuTLS certificate
1095
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1096
(gnutls.library.functions
1097
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1098
# Import the OpenPGP public key into the certificate
1099
(gnutls.library.functions
1100
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1101
gnutls.library.constants
1102
.GNUTLS_OPENPGP_FMT_RAW))
1103
# Verify the self signature in the key
1104
crtverify = ctypes.c_uint()
1105
(gnutls.library.functions
1106
.gnutls_openpgp_crt_verify_self(crt, 0,
1107
ctypes.byref(crtverify)))
1108
if crtverify.value != 0:
1109
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1110
raise (gnutls.errors.CertificateSecurityError
1111
(u"Verify failed"))
1112
# New buffer for the fingerprint
1113
buf = ctypes.create_string_buffer(20)
1114
buf_len = ctypes.c_size_t()
1115
# Get the fingerprint from the certificate into the buffer
1116
(gnutls.library.functions
1117
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1118
ctypes.byref(buf_len)))
1119
# Deinit the certificate
1120
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1121
# Convert the buffer to a Python bytestring
1122
fpr = ctypes.string_at(buf, buf_len.value)
1123
# Convert the bytestring to hexadecimal notation
1124
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1125
return hex_fpr
1126
1127
1128
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1129
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1130
def process_request(self, request, client_address):
1131
"""Overrides and wraps the original process_request().
1132
1133
This function creates a new pipe in self.pipe
1134
"""
1135
self.pipe = os.pipe()
1136
super(ForkingMixInWithPipe,
1137
self).process_request(request, client_address)
1138
os.close(self.pipe[1]) # close write end
1139
self.add_pipe(self.pipe[0])
1140
def add_pipe(self, pipe):
1141
"""Dummy function; override as necessary"""
1142
os.close(pipe)
1143
1144
1145
class IPv6_TCPServer(ForkingMixInWithPipe,
1146
socketserver.TCPServer, object):
681
session = (gnutls.connection
682
.ClientSession(self.request,
683
gnutls.connection
684
.X509Credentials()))
685
686
line = self.request.makefile().readline()
687
logger.debug(u"Protocol version: %r", line)
688
try:
689
if int(line.strip().split()[0]) > 1:
690
raise RuntimeError
691
except (ValueError, IndexError, RuntimeError), error:
692
logger.error(u"Unknown protocol version: %s", error)
693
return
694
695
# Note: gnutls.connection.X509Credentials is really a generic
696
# GnuTLS certificate credentials object so long as no X.509
697
# keys are added to it. Therefore, we can use it here despite
698
# using OpenPGP certificates.
699
700
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
701
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
702
# "+DHE-DSS"))
703
# Use a fallback default, since this MUST be set.
704
priority = self.server.settings.get("priority", "NORMAL")
705
(gnutls.library.functions
706
.gnutls_priority_set_direct(session._c_object,
707
priority, None))
708
709
try:
710
session.handshake()
711
except gnutls.errors.GNUTLSError, error:
712
logger.warning(u"Handshake failed: %s", error)
713
# Do not run session.bye() here: the session is not
714
# established. Just abandon the request.
715
return
716
logger.debug(u"Handshake succeeded")
717
try:
718
fpr = fingerprint(peer_certificate(session))
719
except (TypeError, gnutls.errors.GNUTLSError), error:
720
logger.warning(u"Bad certificate: %s", error)
721
session.bye()
722
return
723
logger.debug(u"Fingerprint: %s", fpr)
724
725
for c in self.server.clients:
726
if c.fingerprint == fpr:
727
client = c
728
break
729
else:
730
logger.warning(u"Client not found for fingerprint: %s",
731
fpr)
732
session.bye()
733
return
734
# Have to check if client.still_valid(), since it is possible
735
# that the client timed out while establishing the GnuTLS
736
# session.
737
if not client.still_valid():
738
logger.warning(u"Client %(name)s is invalid",
739
vars(client))
740
session.bye()
741
return
742
## This won't work here, since we're in a fork.
743
# client.checked_ok()
744
sent_size = 0
745
while sent_size < len(client.secret):
746
sent = session.send(client.secret[sent_size:])
747
logger.debug(u"Sent: %d, remaining: %d",
748
sent, len(client.secret)
749
- (sent_size + sent))
750
sent_size += sent
751
session.bye()
752
753
754
class IPv6_TCPServer(SocketServer.ForkingMixIn,
755
SocketServer.TCPServer, object):
1147
756
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1148
1149
757
Attributes:
758
settings: Server settings
759
clients: Set() of Client objects
1150
760
enabled: Boolean; whether this server is activated yet
1151
interface: None or a network interface name (string)
1152
use_ipv6: Boolean; to use IPv6 or not
1153
761
"""
1154
def __init__(self, server_address, RequestHandlerClass,
1155
interface=None, use_ipv6=True):
1156
self.interface = interface
1157
if use_ipv6:
1158
self.address_family = socket.AF_INET6
1159
socketserver.TCPServer.__init__(self, server_address,
1160
RequestHandlerClass)
762
address_family = socket.AF_INET6
763
def __init__(self, *args, **kwargs):
764
if "settings" in kwargs:
765
self.settings = kwargs["settings"]
766
del kwargs["settings"]
767
if "clients" in kwargs:
768
self.clients = kwargs["clients"]
769
del kwargs["clients"]
770
if "use_ipv6" in kwargs:
771
if not kwargs["use_ipv6"]:
772
self.address_family = socket.AF_INET
773
del kwargs["use_ipv6"]
774
self.enabled = False
775
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
1161
776
def server_bind(self):
1162
777
"""This overrides the normal server_bind() function
1163
778
to bind to an interface if one was specified, and also NOT to
1164
779
bind to an address or port if they were not specified."""
1165
if self.interface is not None:
1166
if SO_BINDTODEVICE is None:
1167
logger.error(u"SO_BINDTODEVICE does not exist;"
1168
u" cannot bind to interface %s",
1169
self.interface)
1170
else:
1171
try:
1172
self.socket.setsockopt(socket.SOL_SOCKET,
1173
SO_BINDTODEVICE,
1174
str(self.interface
1175
+ u'\0'))
1176
except socket.error, error:
1177
if error[0] == errno.EPERM:
1178
logger.error(u"No permission to"
1179
u" bind to interface %s",
1180
self.interface)
1181
elif error[0] == errno.ENOPROTOOPT:
1182
logger.error(u"SO_BINDTODEVICE not available;"
1183
u" cannot bind to interface %s",
1184
self.interface)
1185
else:
1186
raise
780
if self.settings["interface"]:
781
# 25 is from /usr/include/asm-i486/socket.h
782
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
783
try:
784
self.socket.setsockopt(socket.SOL_SOCKET,
785
SO_BINDTODEVICE,
786
self.settings["interface"])
787
except socket.error, error:
788
if error[0] == errno.EPERM:
789
logger.error(u"No permission to"
790
u" bind to interface %s",
791
self.settings["interface"])
792
else:
793
raise
1187
794
# Only bind(2) the socket if we really need to.
1188
795
if self.server_address[0] or self.server_address[1]:
1189
796
if not self.server_address[0]:
1190
797
if self.address_family == socket.AF_INET6:
1191
any_address = u"::" # in6addr_any
798
any_address = "::" # in6addr_any
1192
799
else:
1193
800
any_address = socket.INADDR_ANY
1194
801
self.server_address = (any_address,
1196
803
elif not self.server_address[1]:
1197
804
self.server_address = (self.server_address[0],
1198
805
0)
1199
# if self.interface:
806
# if self.settings["interface"]:
1200
807
# self.server_address = (self.server_address[0],
1201
808
# 0, # port
1202
809
# 0, # flowinfo
1203
810
# if_nametoindex
1204
# (self.interface))
1205
return socketserver.TCPServer.server_bind(self)
1206
1207
1208
class MandosServer(IPv6_TCPServer):
1209
"""Mandos server.
1210
1211
Attributes:
1212
clients: set of Client objects
1213
gnutls_priority GnuTLS priority string
1214
use_dbus: Boolean; to emit D-Bus signals or not
1215
1216
Assumes a gobject.MainLoop event loop.
1217
"""
1218
def __init__(self, server_address, RequestHandlerClass,
1219
interface=None, use_ipv6=True, clients=None,
1220
gnutls_priority=None, use_dbus=True):
1221
self.enabled = False
1222
self.clients = clients
1223
if self.clients is None:
1224
self.clients = set()
1225
self.use_dbus = use_dbus
1226
self.gnutls_priority = gnutls_priority
1227
IPv6_TCPServer.__init__(self, server_address,
1228
RequestHandlerClass,
1229
interface = interface,
1230
use_ipv6 = use_ipv6)
811
# (self.settings
812
# ["interface"]))
813
return super(IPv6_TCPServer, self).server_bind()
1231
814
def server_activate(self):
1232
815
if self.enabled:
1233
return socketserver.TCPServer.server_activate(self)
816
return super(IPv6_TCPServer, self).server_activate()
1234
817
def enable(self):
1235
818
self.enabled = True
1236
def add_pipe(self, pipe):
1237
# Call "handle_ipc" for both data and EOF events
1238
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1239
self.handle_ipc)
1240
def handle_ipc(self, source, condition, file_objects={}):
1241
condition_names = {
1242
gobject.IO_IN: u"IN", # There is data to read.
1243
gobject.IO_OUT: u"OUT", # Data can be written (without
1244
# blocking).
1245
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1246
gobject.IO_ERR: u"ERR", # Error condition.
1247
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1248
# broken, usually for pipes and
1249
# sockets).
1250
}
1251
conditions_string = ' | '.join(name
1252
for cond, name in
1253
condition_names.iteritems()
1254
if cond & condition)
1255
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1256
conditions_string)
1257
1258
# Turn the pipe file descriptor into a Python file object
1259
if source not in file_objects:
1260
file_objects[source] = os.fdopen(source, u"r", 1)
1261
1262
# Read a line from the file object
1263
cmdline = file_objects[source].readline()
1264
if not cmdline: # Empty line means end of file
1265
# close the IPC pipe
1266
file_objects[source].close()
1267
del file_objects[source]
1268
1269
# Stop calling this function
1270
return False
1271
1272
logger.debug(u"IPC command: %r", cmdline)
1273
1274
# Parse and act on command
1275
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1276
1277
if cmd == u"NOTFOUND":
1278
logger.warning(u"Client not found for fingerprint: %s",
1279
args)
1280
if self.use_dbus:
1281
# Emit D-Bus signal
1282
mandos_dbus_service.ClientNotFound(args)
1283
elif cmd == u"INVALID":
1284
for client in self.clients:
1285
if client.name == args:
1286
logger.warning(u"Client %s is invalid", args)
1287
if self.use_dbus:
1288
# Emit D-Bus signal
1289
client.Rejected()
1290
break
1291
else:
1292
logger.error(u"Unknown client %s is invalid", args)
1293
elif cmd == u"SENDING":
1294
for client in self.clients:
1295
if client.name == args:
1296
logger.info(u"Sending secret to %s", client.name)
1297
client.checked_ok()
1298
if self.use_dbus:
1299
# Emit D-Bus signal
1300
client.ReceivedSecret()
1301
break
1302
else:
1303
logger.error(u"Sending secret to unknown client %s",
1304
args)
1305
else:
1306
logger.error(u"Unknown IPC command: %r", cmdline)
1307
1308
# Keep calling this function
1309
return True
1310
819
1311
820
1312
821
def string_to_delta(interval):
1313
822
"""Parse a string and return a datetime.timedelta
1314
823
1315
>>> string_to_delta(u'7d')
824
>>> string_to_delta('7d')
1316
825
datetime.timedelta(7)
1317
>>> string_to_delta(u'60s')
826
>>> string_to_delta('60s')
1318
827
datetime.timedelta(0, 60)
1319
>>> string_to_delta(u'60m')
828
>>> string_to_delta('60m')
1320
829
datetime.timedelta(0, 3600)
1321
>>> string_to_delta(u'24h')
830
>>> string_to_delta('24h')
1322
831
datetime.timedelta(1)
1323
832
>>> string_to_delta(u'1w')
1324
833
datetime.timedelta(7)
1325
>>> string_to_delta(u'5m 30s')
834
>>> string_to_delta('5m 30s')
1326
835
datetime.timedelta(0, 330)
1327
836
"""
1328
837
timevalue = datetime.timedelta(0)
1348
857
return timevalue
1349
858
1350
859
860
def server_state_changed(state):
861
"""Derived from the Avahi example code"""
862
if state == avahi.SERVER_COLLISION:
863
logger.error(u"Zeroconf server name collision")
864
service.remove()
865
elif state == avahi.SERVER_RUNNING:
866
service.add()
867
868
869
def entry_group_state_changed(state, error):
870
"""Derived from the Avahi example code"""
871
logger.debug(u"Avahi state change: %i", state)
872
873
if state == avahi.ENTRY_GROUP_ESTABLISHED:
874
logger.debug(u"Zeroconf service established.")
875
elif state == avahi.ENTRY_GROUP_COLLISION:
876
logger.warning(u"Zeroconf service name collision.")
877
service.rename()
878
elif state == avahi.ENTRY_GROUP_FAILURE:
879
logger.critical(u"Avahi: Error in group state changed %s",
880
unicode(error))
881
raise AvahiGroupError(u"State changed: %s" % unicode(error))
882
1351
883
def if_nametoindex(interface):
1352
"""Call the C function if_nametoindex(), or equivalent
1353
1354
Note: This function cannot accept a unicode string."""
884
"""Call the C function if_nametoindex(), or equivalent"""
1355
885
global if_nametoindex
1356
886
try:
1357
887
if_nametoindex = (ctypes.cdll.LoadLibrary
1358
(ctypes.util.find_library(u"c"))
888
(ctypes.util.find_library("c"))
1359
889
.if_nametoindex)
1360
890
except (OSError, AttributeError):
1361
logger.warning(u"Doing if_nametoindex the hard way")
891
if "struct" not in sys.modules:
892
import struct
893
if "fcntl" not in sys.modules:
894
import fcntl
1362
895
def if_nametoindex(interface):
1363
896
"Get an interface index the hard way, i.e. using fcntl()"
1364
897
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1365
898
with closing(socket.socket()) as s:
1366
899
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1367
struct.pack(str(u"16s16x"),
1368
interface))
1369
interface_index = struct.unpack(str(u"I"),
1370
ifreq[16:20])[0]
900
struct.pack("16s16x", interface))
901
interface_index = struct.unpack("I", ifreq[16:20])[0]
1371
902
return interface_index
1372
903
return if_nametoindex(interface)
1373
904
1374
905
1375
906
def daemon(nochdir = False, noclose = False):
1376
907
"""See daemon(3). Standard BSD Unix function.
1377
1378
908
This should really exist as os.daemon, but it doesn't (yet)."""
1379
909
if os.fork():
1380
910
sys.exit()
1381
911
os.setsid()
1382
912
if not nochdir:
1383
os.chdir(u"/")
913
os.chdir("/")
1384
914
if os.fork():
1385
915
sys.exit()
1386
916
if not noclose:
1388
918
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1389
919
if not stat.S_ISCHR(os.fstat(null).st_mode):
1390
920
raise OSError(errno.ENODEV,
1391
u"/dev/null not a character device")
921
"/dev/null not a character device")
1392
922
os.dup2(null, sys.stdin.fileno())
1393
923
os.dup2(null, sys.stdout.fileno())
1394
924
os.dup2(null, sys.stderr.fileno())
1397
927
1398
928
1399
929
def main():
1400
1401
##################################################################
1402
# Parsing of options, both command line and config file
1403
1404
930
parser = optparse.OptionParser(version = "%%prog %s" % version)
1405
parser.add_option("-i", u"--interface", type=u"string",
1406
metavar="IF", help=u"Bind to interface IF")
1407
parser.add_option("-a", u"--address", type=u"string",
1408
help=u"Address to listen for requests on")
1409
parser.add_option("-p", u"--port", type=u"int",
1410
help=u"Port number to receive requests on")
1411
parser.add_option("--check", action=u"store_true",
1412
help=u"Run self-test")
1413
parser.add_option("--debug", action=u"store_true",
1414
help=u"Debug mode; run in foreground and log to"
1415
u" terminal")
1416
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1417
u" priority string (see GnuTLS documentation)")
1418
parser.add_option("--servicename", type=u"string",
1419
metavar=u"NAME", help=u"Zeroconf service name")
1420
parser.add_option("--configdir", type=u"string",
1421
default=u"/etc/mandos", metavar=u"DIR",
1422
help=u"Directory to search for configuration"
1423
u" files")
1424
parser.add_option("--no-dbus", action=u"store_false",
1425
dest=u"use_dbus", help=u"Do not provide D-Bus"
1426
u" system bus interface")
1427
parser.add_option("--no-ipv6", action=u"store_false",
1428
dest=u"use_ipv6", help=u"Do not use IPv6")
931
parser.add_option("-i", "--interface", type="string",
932
metavar="IF", help="Bind to interface IF")
933
parser.add_option("-a", "--address", type="string",
934
help="Address to listen for requests on")
935
parser.add_option("-p", "--port", type="int",
936
help="Port number to receive requests on")
937
parser.add_option("--check", action="store_true",
938
help="Run self-test")
939
parser.add_option("--debug", action="store_true",
940
help="Debug mode; run in foreground and log to"
941
" terminal")
942
parser.add_option("--priority", type="string", help="GnuTLS"
943
" priority string (see GnuTLS documentation)")
944
parser.add_option("--servicename", type="string", metavar="NAME",
945
help="Zeroconf service name")
946
parser.add_option("--configdir", type="string",
947
default="/etc/mandos", metavar="DIR",
948
help="Directory to search for configuration"
949
" files")
950
parser.add_option("--no-dbus", action="store_false",
951
dest="use_dbus",
952
help="Do not provide D-Bus system bus"
953
" interface")
954
parser.add_option("--no-ipv6", action="store_false",
955
dest="use_ipv6", help="Do not use IPv6")
1429
956
options = parser.parse_args()[0]
1430
957
1431
958
if options.check:
1434
961
sys.exit()
1435
962
1436
963
# Default values for config file for server-global settings
1437
server_defaults = { u"interface": u"",
1438
u"address": u"",
1439
u"port": u"",
1440
u"debug": u"False",
1441
u"priority":
1442
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1443
u"servicename": u"Mandos",
1444
u"use_dbus": u"True",
1445
u"use_ipv6": u"True",
964
server_defaults = { "interface": "",
965
"address": "",
966
"port": "",
967
"debug": "False",
968
"priority":
969
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
970
"servicename": "Mandos",
971
"use_dbus": "True",
972
"use_ipv6": "True",
1446
973
}
1447
974
1448
975
# Parse config file for server-global settings
1449
server_config = configparser.SafeConfigParser(server_defaults)
976
server_config = ConfigParser.SafeConfigParser(server_defaults)
1450
977
del server_defaults
1451
server_config.read(os.path.join(options.configdir,
1452
u"mandos.conf"))
978
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1453
979
# Convert the SafeConfigParser object to a dict
1454
980
server_settings = server_config.defaults()
1455
981
# Use the appropriate methods on the non-string config options
1456
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1457
server_settings[option] = server_config.getboolean(u"DEFAULT",
1458
option)
982
server_settings["debug"] = server_config.getboolean("DEFAULT",
983
"debug")
984
server_settings["use_dbus"] = server_config.getboolean("DEFAULT",
985
"use_dbus")
986
server_settings["use_ipv6"] = server_config.getboolean("DEFAULT",
987
"use_ipv6")
1459
988
if server_settings["port"]:
1460
server_settings["port"] = server_config.getint(u"DEFAULT",
1461
u"port")
989
server_settings["port"] = server_config.getint("DEFAULT",
990
"port")
1462
991
del server_config
1463
992
1464
993
# Override the settings from the config file with command line
1465
994
# options, if set.
1466
for option in (u"interface", u"address", u"port", u"debug",
1467
u"priority", u"servicename", u"configdir",
1468
u"use_dbus", u"use_ipv6"):
995
for option in ("interface", "address", "port", "debug",
996
"priority", "servicename", "configdir",
997
"use_dbus", "use_ipv6"):
1469
998
value = getattr(options, option)
1470
999
if value is not None:
1471
1000
server_settings[option] = value
1472
1001
del options
1473
# Force all strings to be unicode
1474
for option in server_settings.keys():
1475
if type(server_settings[option]) is str:
1476
server_settings[option] = unicode(server_settings[option])
1477
1002
# Now we have our good server settings in "server_settings"
1478
1003
1479
##################################################################
1480
1481
1004
# For convenience
1482
debug = server_settings[u"debug"]
1483
use_dbus = server_settings[u"use_dbus"]
1484
use_ipv6 = server_settings[u"use_ipv6"]
1005
debug = server_settings["debug"]
1006
use_dbus = server_settings["use_dbus"]
1007
use_ipv6 = server_settings["use_ipv6"]
1485
1008
1486
1009
if not debug:
1487
1010
syslogger.setLevel(logging.WARNING)
1488
1011
console.setLevel(logging.WARNING)
1489
1012
1490
if server_settings[u"servicename"] != u"Mandos":
1013
if server_settings["servicename"] != "Mandos":
1491
1014
syslogger.setFormatter(logging.Formatter
1492
(u'Mandos (%s) [%%(process)d]:'
1493
u' %%(levelname)s: %%(message)s'
1494
% server_settings[u"servicename"]))
1015
('Mandos (%s): %%(levelname)s:'
1016
' %%(message)s'
1017
% server_settings["servicename"]))
1495
1018
1496
1019
# Parse config file with clients
1497
client_defaults = { u"timeout": u"1h",
1498
u"interval": u"5m",
1499
u"checker": u"fping -q -- %%(host)s",
1500
u"host": u"",
1020
client_defaults = { "timeout": "1h",
1021
"interval": "5m",
1022
"checker": "fping -q -- %%(host)s",
1023
"host": "",
1501
1024
}
1502
client_config = configparser.SafeConfigParser(client_defaults)
1503
client_config.read(os.path.join(server_settings[u"configdir"],
1504
u"clients.conf"))
1505
1506
global mandos_dbus_service
1507
mandos_dbus_service = None
1508
1509
tcp_server = MandosServer((server_settings[u"address"],
1510
server_settings[u"port"]),
1511
ClientHandler,
1512
interface=server_settings[u"interface"],
1513
use_ipv6=use_ipv6,
1514
gnutls_priority=
1515
server_settings[u"priority"],
1516
use_dbus=use_dbus)
1517
pidfilename = u"/var/run/mandos.pid"
1025
client_config = ConfigParser.SafeConfigParser(client_defaults)
1026
client_config.read(os.path.join(server_settings["configdir"],
1027
"clients.conf"))
1028
1029
clients = Set()
1030
tcp_server = IPv6_TCPServer((server_settings["address"],
1031
server_settings["port"]),
1032
TCP_handler,
1033
settings=server_settings,
1034
clients=clients, use_ipv6=use_ipv6)
1035
pidfilename = "/var/run/mandos.pid"
1518
1036
try:
1519
pidfile = open(pidfilename, u"w")
1037
pidfile = open(pidfilename, "w")
1520
1038
except IOError:
1521
logger.error(u"Could not open file %r", pidfilename)
1039
logger.error("Could not open file %r", pidfilename)
1522
1040
1523
1041
try:
1524
uid = pwd.getpwnam(u"_mandos").pw_uid
1525
gid = pwd.getpwnam(u"_mandos").pw_gid
1042
uid = pwd.getpwnam("_mandos").pw_uid
1043
gid = pwd.getpwnam("_mandos").pw_gid
1526
1044
except KeyError:
1527
1045
try:
1528
uid = pwd.getpwnam(u"mandos").pw_uid
1529
gid = pwd.getpwnam(u"mandos").pw_gid
1046
uid = pwd.getpwnam("mandos").pw_uid
1047
gid = pwd.getpwnam("mandos").pw_gid
1530
1048
except KeyError:
1531
1049
try:
1532
uid = pwd.getpwnam(u"nobody").pw_uid
1533
gid = pwd.getpwnam(u"nobody").pw_gid
1050
uid = pwd.getpwnam("nobody").pw_uid
1051
gid = pwd.getpwnam("nogroup").pw_gid
1534
1052
except KeyError:
1535
1053
uid = 65534
1536
1054
gid = 65534
1549
1067
1550
1068
@gnutls.library.types.gnutls_log_func
1551
1069
def debug_gnutls(level, string):
1552
logger.debug(u"GnuTLS: %s", string[:-1])
1070
logger.debug("GnuTLS: %s", string[:-1])
1553
1071
1554
1072
(gnutls.library.functions
1555
1073
.gnutls_global_set_log_function(debug_gnutls))
1556
1074
1075
global service
1076
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1077
service = AvahiService(name = server_settings["servicename"],
1078
servicetype = "_mandos._tcp",
1079
protocol = protocol)
1080
if server_settings["interface"]:
1081
service.interface = (if_nametoindex
1082
(server_settings["interface"]))
1083
1557
1084
global main_loop
1085
global bus
1086
global server
1558
1087
# From the Avahi example code
1559
1088
DBusGMainLoop(set_as_default=True )
1560
1089
main_loop = gobject.MainLoop()
1561
1090
bus = dbus.SystemBus()
1091
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1092
avahi.DBUS_PATH_SERVER),
1093
avahi.DBUS_INTERFACE_SERVER)
1562
1094
# End of Avahi example code
1563
1095
if use_dbus:
1564
1096
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1565
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1566
service = AvahiService(name = server_settings[u"servicename"],
1567
servicetype = u"_mandos._tcp",
1568
protocol = protocol, bus = bus)
1569
if server_settings["interface"]:
1570
service.interface = (if_nametoindex
1571
(str(server_settings[u"interface"])))
1572
1097
1573
client_class = Client
1574
if use_dbus:
1575
client_class = functools.partial(ClientDBus, bus = bus)
1576
tcp_server.clients.update(set(
1577
client_class(name = section,
1578
config= dict(client_config.items(section)))
1579
for section in client_config.sections()))
1580
if not tcp_server.clients:
1098
clients.update(Set(Client(name = section,
1099
config
1100
= dict(client_config.items(section)),
1101
use_dbus = use_dbus)
1102
for section in client_config.sections()))
1103
if not clients:
1581
1104
logger.warning(u"No clients defined")
1582
1105
1583
1106
if debug:
1593
1116
daemon()
1594
1117
1595
1118
try:
1596
with closing(pidfile):
1597
pid = os.getpid()
1598
pidfile.write(str(pid) + "\n")
1119
pid = os.getpid()
1120
pidfile.write(str(pid) + "\n")
1121
pidfile.close()
1599
1122
del pidfile
1600
1123
except IOError:
1601
1124
logger.error(u"Could not write to file %r with PID %d",
1607
1130
1608
1131
def cleanup():
1609
1132
"Cleanup function; run on exit"
1610
service.cleanup()
1133
global group
1134
# From the Avahi example code
1135
if not group is None:
1136
group.Free()
1137
group = None
1138
# End of Avahi example code
1611
1139
1612
while tcp_server.clients:
1613
client = tcp_server.clients.pop()
1140
while clients:
1141
client = clients.pop()
1614
1142
client.disable_hook = None
1615
1143
client.disable()
1616
1144
1622
1150
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1623
1151
1624
1152
if use_dbus:
1625
class MandosDBusService(dbus.service.Object):
1153
class MandosServer(dbus.service.Object):
1626
1154
"""A D-Bus proxy object"""
1627
1155
def __init__(self):
1628
dbus.service.Object.__init__(self, bus, u"/")
1156
dbus.service.Object.__init__(self, bus, "/")
1629
1157
_interface = u"se.bsnet.fukt.Mandos"
1630
1158
1631
@dbus.service.signal(_interface, signature=u"oa{sv}")
1159
@dbus.service.signal(_interface, signature="oa{sv}")
1632
1160
def ClientAdded(self, objpath, properties):
1633
1161
"D-Bus signal"
1634
1162
pass
1635
1163
1636
@dbus.service.signal(_interface, signature=u"s")
1637
def ClientNotFound(self, fingerprint):
1638
"D-Bus signal"
1639
pass
1640
1641
@dbus.service.signal(_interface, signature=u"os")
1164
@dbus.service.signal(_interface, signature="os")
1642
1165
def ClientRemoved(self, objpath, name):
1643
1166
"D-Bus signal"
1644
1167
pass
1645
1168
1646
@dbus.service.method(_interface, out_signature=u"ao")
1169
@dbus.service.method(_interface, out_signature="ao")
1647
1170
def GetAllClients(self):
1648
1171
"D-Bus method"
1649
return dbus.Array(c.dbus_object_path
1650
for c in tcp_server.clients)
1172
return dbus.Array(c.dbus_object_path for c in clients)
1651
1173
1652
@dbus.service.method(_interface,
1653
out_signature=u"a{oa{sv}}")
1174
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1654
1175
def GetAllClientsWithProperties(self):
1655
1176
"D-Bus method"
1656
1177
return dbus.Dictionary(
1657
((c.dbus_object_path, c.GetAll(u""))
1658
for c in tcp_server.clients),
1659
signature=u"oa{sv}")
1178
((c.dbus_object_path, c.GetAllProperties())
1179
for c in clients),
1180
signature="oa{sv}")
1660
1181
1661
@dbus.service.method(_interface, in_signature=u"o")
1182
@dbus.service.method(_interface, in_signature="o")
1662
1183
def RemoveClient(self, object_path):
1663
1184
"D-Bus method"
1664
for c in tcp_server.clients:
1185
for c in clients:
1665
1186
if c.dbus_object_path == object_path:
1666
tcp_server.clients.remove(c)
1667
c.remove_from_connection()
1187
clients.remove(c)
1668
1188
# Don't signal anything except ClientRemoved
1669
c.disable(signal=False)
1189
c.use_dbus = False
1190
c.disable()
1670
1191
# Emit D-Bus signal
1671
1192
self.ClientRemoved(object_path, c.name)
1672
1193
return
1674
1195
1675
1196
del _interface
1676
1197
1677
mandos_dbus_service = MandosDBusService()
1198
mandos_server = MandosServer()
1678
1199
1679
for client in tcp_server.clients:
1200
for client in clients:
1680
1201
if use_dbus:
1681
1202
# Emit D-Bus signal
1682
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1683
client.GetAll(u""))
1203
mandos_server.ClientAdded(client.dbus_object_path,
1204
client.GetAllProperties())
1684
1205
client.enable()
1685
1206
1686
1207
tcp_server.enable()
1700
1221
1701
1222
try:
1702
1223
# From the Avahi example code
1224
server.connect_to_signal("StateChanged", server_state_changed)
1703
1225
try:
1704
service.activate()
1226
server_state_changed(server.GetState())
1705
1227
except dbus.exceptions.DBusException, error:
1706
1228
logger.critical(u"DBusException: %s", error)
1707
1229
sys.exit(1)
1720
1242
except KeyboardInterrupt:
1721
1243
if debug:
1722
1244
print >> sys.stderr
1723
logger.debug(u"Server received KeyboardInterrupt")
1724
logger.debug(u"Server exiting")
1245
logger.debug("Server received KeyboardInterrupt")
1246
logger.debug("Server exiting")
1725
1247
1726
1248
if __name__ == '__main__':
1727
1249
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0