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- Committer: Teddy Hogeborn
- Date: 2009-01-18 00:16:57 UTC
- Revision ID: teddy@fukt.bsnet.se-20090118001657-6mo3ae73ldy5tegf
* debian/mandos-client.postinst: Converted to Bourne shell. Also
minor message change.
* debian/mandos-client.postrm: Minor message change.
* debian/mandos.postinst: Converted to Bourne shell. Also minor
message change.
* debian/mandos.prerm: Minor message change.
minor message change.
* debian/mandos-client.postrm: Minor message change.
* debian/mandos.postinst: Converted to Bourne shell. Also minor
message change.
* debian/mandos.prerm: Minor message change.
- 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 = "1.0.5"
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: %(levelname)s: %(message)s'))
91
77
logger.addHandler(syslogger)
92
78
93
79
console = logging.StreamHandler()
94
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
95
u' %(levelname)s:'
96
u' %(message)s'))
80
console.setFormatter(logging.Formatter('%(name)s: %(levelname)s:'
81
' %(message)s'))
97
82
logger.addHandler(console)
98
83
99
84
class AvahiError(Exception):
112
97
113
98
class AvahiService(object):
114
99
"""An Avahi (Zeroconf) service.
115
116
100
Attributes:
117
101
interface: integer; avahi.IF_UNSPEC or an interface index.
118
102
Used to optionally bind to the specified interface.
119
name: string; Example: u'Mandos'
120
type: string; Example: u'_mandos._tcp'.
103
name: string; Example: 'Mandos'
104
type: string; Example: '_mandos._tcp'.
121
105
See <http://www.dns-sd.org/ServiceTypes.html>
122
106
port: integer; what port to announce
123
107
TXT: list of strings; TXT record for the service
126
110
max_renames: integer; maximum number of renames
127
111
rename_count: integer; counter so we only rename after collisions
128
112
a sensible number of times
129
group: D-Bus Entry Group
130
server: D-Bus Server
131
bus: dbus.SystemBus()
132
113
"""
133
114
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
134
115
servicetype = None, port = None, TXT = None,
135
domain = u"", host = u"", max_renames = 32768,
136
protocol = avahi.PROTO_UNSPEC, bus = None):
116
domain = "", host = "", max_renames = 32768):
137
117
self.interface = interface
138
118
self.name = name
139
119
self.type = servicetype
143
123
self.host = host
144
124
self.rename_count = 0
145
125
self.max_renames = max_renames
146
self.protocol = protocol
147
self.group = None # our entry group
148
self.server = None
149
self.bus = bus
150
126
def rename(self):
151
127
"""Derived from the Avahi example code"""
152
128
if self.rename_count >= self.max_renames:
154
130
u" after %i retries, exiting.",
155
131
self.rename_count)
156
132
raise AvahiServiceError(u"Too many renames")
157
self.name = self.server.GetAlternativeServiceName(self.name)
133
self.name = server.GetAlternativeServiceName(self.name)
158
134
logger.info(u"Changing Zeroconf service name to %r ...",
159
unicode(self.name))
135
str(self.name))
160
136
syslogger.setFormatter(logging.Formatter
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
163
% self.name))
137
('Mandos (%s): %%(levelname)s:'
138
' %%(message)s' % self.name))
164
139
self.remove()
165
140
self.add()
166
141
self.rename_count += 1
167
142
def remove(self):
168
143
"""Derived from the Avahi example code"""
169
if self.group is not None:
170
self.group.Reset()
144
if group is not None:
145
group.Reset()
171
146
def add(self):
172
147
"""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)
148
global group
149
if group is None:
150
group = dbus.Interface(bus.get_object
151
(avahi.DBUS_NAME,
152
server.EntryGroupNew()),
153
avahi.DBUS_INTERFACE_ENTRY_GROUP)
154
group.connect_to_signal('StateChanged',
155
entry_group_state_changed)
181
156
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):
157
service.name, service.type)
158
group.AddService(
159
self.interface, # interface
160
avahi.PROTO_INET6, # protocol
161
dbus.UInt32(0), # flags
162
self.name, self.type,
163
self.domain, self.host,
164
dbus.UInt16(self.port),
165
avahi.string_array_to_txt_array(self.TXT))
166
group.Commit()
167
168
# From the Avahi example code:
169
group = None # our entry group
170
# End of Avahi example code
171
172
173
def _datetime_to_dbus(dt, variant_level=0):
174
"""Convert a UTC datetime.datetime() to a D-Bus type."""
175
return dbus.String(dt.isoformat(), variant_level=variant_level)
176
177
178
class Client(dbus.service.Object):
231
179
"""A representation of a client host served by this server.
232
233
180
Attributes:
234
name: string; from the config file, used in log messages and
235
D-Bus identifiers
181
name: string; from the config file, used in log messages
236
182
fingerprint: string (40 or 32 hexadecimal digits); used to
237
183
uniquely identify the client
238
184
secret: bytestring; sent verbatim (over TLS) to client
249
195
to see if the client lives.
250
196
'None' if no process is running.
251
197
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
198
disable_initiator_tag: - '' -
253
199
checker_callback_tag: - '' -
254
200
checker_command: string; External command which is run to check if
255
201
client lives. %() expansions are done at
256
202
runtime with vars(self) as dict, so that for
257
203
instance %(name)s can be used in the command.
258
current_checker_command: string; current running checker_command
204
use_dbus: bool(); Whether to provide D-Bus interface and signals
205
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
259
206
"""
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
207
def timeout_milliseconds(self):
269
208
"Return the 'timeout' attribute in milliseconds"
270
return self._timedelta_to_milliseconds(self.timeout)
209
return ((self.timeout.days * 24 * 60 * 60 * 1000)
210
+ (self.timeout.seconds * 1000)
211
+ (self.timeout.microseconds // 1000))
271
212
272
213
def interval_milliseconds(self):
273
214
"Return the 'interval' attribute in milliseconds"
274
return self._timedelta_to_milliseconds(self.interval)
215
return ((self.interval.days * 24 * 60 * 60 * 1000)
216
+ (self.interval.seconds * 1000)
217
+ (self.interval.microseconds // 1000))
275
218
276
def __init__(self, name = None, disable_hook=None, config=None):
219
def __init__(self, name = None, disable_hook=None, config=None,
220
use_dbus=True):
277
221
"""Note: the 'checker' key in 'config' sets the
278
222
'checker_command' attribute and *not* the 'checker'
279
223
attribute."""
281
225
if config is None:
282
226
config = {}
283
227
logger.debug(u"Creating client %r", self.name)
228
self.use_dbus = use_dbus
229
if self.use_dbus:
230
self.dbus_object_path = (dbus.ObjectPath
231
("/Mandos/clients/"
232
+ self.name.replace(".", "_")))
233
dbus.service.Object.__init__(self, bus,
234
self.dbus_object_path)
284
235
# Uppercase and remove spaces from fingerprint for later
285
236
# comparison purposes with return value from the fingerprint()
286
237
# function
287
self.fingerprint = (config[u"fingerprint"].upper()
238
self.fingerprint = (config["fingerprint"].upper()
288
239
.replace(u" ", u""))
289
240
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:
241
if "secret" in config:
242
self.secret = config["secret"].decode(u"base64")
243
elif "secfile" in config:
293
244
with closing(open(os.path.expanduser
294
245
(os.path.expandvars
295
(config[u"secfile"])),
296
"rb")) as secfile:
246
(config["secfile"])))) as secfile:
297
247
self.secret = secfile.read()
298
248
else:
299
249
raise TypeError(u"No secret or secfile for client %s"
300
250
% self.name)
301
self.host = config.get(u"host", u"")
251
self.host = config.get("host", "")
302
252
self.created = datetime.datetime.utcnow()
303
253
self.enabled = False
304
254
self.last_enabled = None
305
255
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
256
self.timeout = string_to_delta(config["timeout"])
257
self.interval = string_to_delta(config["interval"])
308
258
self.disable_hook = disable_hook
309
259
self.checker = None
310
260
self.checker_initiator_tag = None
311
261
self.disable_initiator_tag = None
312
262
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
314
self.current_checker_command = None
315
self.last_connect = None
263
self.checker_command = config["checker"]
316
264
317
265
def enable(self):
318
266
"""Start this client's checker and timeout hooks"""
319
if getattr(self, u"enabled", False):
320
# Already enabled
321
return
322
267
self.last_enabled = datetime.datetime.utcnow()
323
268
# Schedule a new checker to be started an 'interval' from now,
324
269
# and every interval from then on.
332
277
(self.timeout_milliseconds(),
333
278
self.disable))
334
279
self.enabled = True
280
if self.use_dbus:
281
# Emit D-Bus signals
282
self.PropertyChanged(dbus.String(u"enabled"),
283
dbus.Boolean(True, variant_level=1))
284
self.PropertyChanged(dbus.String(u"last_enabled"),
285
(_datetime_to_dbus(self.last_enabled,
286
variant_level=1)))
335
287
336
288
def disable(self):
337
289
"""Disable this client."""
338
290
if not getattr(self, "enabled", False):
339
291
return False
340
292
logger.info(u"Disabling client %s", self.name)
341
if getattr(self, u"disable_initiator_tag", False):
293
if getattr(self, "disable_initiator_tag", False):
342
294
gobject.source_remove(self.disable_initiator_tag)
343
295
self.disable_initiator_tag = None
344
if getattr(self, u"checker_initiator_tag", False):
296
if getattr(self, "checker_initiator_tag", False):
345
297
gobject.source_remove(self.checker_initiator_tag)
346
298
self.checker_initiator_tag = None
347
299
self.stop_checker()
348
300
if self.disable_hook:
349
301
self.disable_hook(self)
350
302
self.enabled = False
303
if self.use_dbus:
304
# Emit D-Bus signal
305
self.PropertyChanged(dbus.String(u"enabled"),
306
dbus.Boolean(False, variant_level=1))
351
307
# Do not run this again if called by a gobject.timeout_add
352
308
return False
353
309
359
315
"""The checker has completed, so take appropriate actions."""
360
316
self.checker_callback_tag = None
361
317
self.checker = None
362
if os.WIFEXITED(condition):
363
exitstatus = os.WEXITSTATUS(condition)
364
if exitstatus == 0:
365
logger.info(u"Checker for %(name)s succeeded",
366
vars(self))
367
self.checked_ok()
368
else:
369
logger.info(u"Checker for %(name)s failed",
370
vars(self))
371
else:
318
if self.use_dbus:
319
# Emit D-Bus signal
320
self.PropertyChanged(dbus.String(u"checker_running"),
321
dbus.Boolean(False, variant_level=1))
322
if (os.WIFEXITED(condition)
323
and (os.WEXITSTATUS(condition) == 0)):
324
logger.info(u"Checker for %(name)s succeeded",
325
vars(self))
326
if self.use_dbus:
327
# Emit D-Bus signal
328
self.CheckerCompleted(dbus.Boolean(True),
329
dbus.UInt16(condition),
330
dbus.String(command))
331
self.bump_timeout()
332
elif not os.WIFEXITED(condition):
372
333
logger.warning(u"Checker for %(name)s crashed?",
373
334
vars(self))
335
if self.use_dbus:
336
# Emit D-Bus signal
337
self.CheckerCompleted(dbus.Boolean(False),
338
dbus.UInt16(condition),
339
dbus.String(command))
340
else:
341
logger.info(u"Checker for %(name)s failed",
342
vars(self))
343
if self.use_dbus:
344
# Emit D-Bus signal
345
self.CheckerCompleted(dbus.Boolean(False),
346
dbus.UInt16(condition),
347
dbus.String(command))
374
348
375
def checked_ok(self):
349
def bump_timeout(self):
376
350
"""Bump up the timeout for this client.
377
378
351
This should only be called when the client has been seen,
379
352
alive and well.
380
353
"""
383
356
self.disable_initiator_tag = (gobject.timeout_add
384
357
(self.timeout_milliseconds(),
385
358
self.disable))
359
if self.use_dbus:
360
# Emit D-Bus signal
361
self.PropertyChanged(
362
dbus.String(u"last_checked_ok"),
363
(_datetime_to_dbus(self.last_checked_ok,
364
variant_level=1)))
386
365
387
366
def start_checker(self):
388
367
"""Start a new checker subprocess if one is not running.
389
390
368
If a checker already exists, leave it running and do
391
369
nothing."""
392
370
# The reason for not killing a running checker is that if we
397
375
# checkers alone, the checker would have to take more time
398
376
# than 'timeout' for the client to be declared invalid, which
399
377
# is as it should be.
400
401
# If a checker exists, make sure it is not a zombie
402
try:
403
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
if pid:
410
logger.warning(u"Checker was a zombie")
411
gobject.source_remove(self.checker_callback_tag)
412
self.checker_callback(pid, status,
413
self.current_checker_command)
414
# Start a new checker if needed
415
378
if self.checker is None:
416
379
try:
417
380
# In case checker_command has exactly one % operator
418
381
command = self.checker_command % self.host
419
382
except TypeError:
420
383
# Escape attributes for the shell
421
escaped_attrs = dict((key,
422
re.escape(unicode(str(val),
423
errors=
424
u'replace')))
384
escaped_attrs = dict((key, re.escape(str(val)))
425
385
for key, val in
426
386
vars(self).iteritems())
427
387
try:
430
390
logger.error(u'Could not format string "%s":'
431
391
u' %s', self.checker_command, error)
432
392
return True # Try again later
433
self.current_checker_command = command
434
393
try:
435
394
logger.info(u"Starting checker %r for %s",
436
395
command, self.name)
440
399
# always replaced by /dev/null.)
441
400
self.checker = subprocess.Popen(command,
442
401
close_fds=True,
443
shell=True, cwd=u"/")
402
shell=True, cwd="/")
403
if self.use_dbus:
404
# Emit D-Bus signal
405
self.CheckerStarted(command)
406
self.PropertyChanged(
407
dbus.String("checker_running"),
408
dbus.Boolean(True, variant_level=1))
444
409
self.checker_callback_tag = (gobject.child_watch_add
445
410
(self.checker.pid,
446
411
self.checker_callback,
447
412
data=command))
448
# The checker may have completed before the gobject
449
# watch was added. Check for this.
450
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
451
if pid:
452
gobject.source_remove(self.checker_callback_tag)
453
self.checker_callback(pid, status, command)
454
413
except OSError, error:
455
414
logger.error(u"Failed to start subprocess: %s",
456
415
error)
462
421
if self.checker_callback_tag:
463
422
gobject.source_remove(self.checker_callback_tag)
464
423
self.checker_callback_tag = None
465
if getattr(self, u"checker", None) is None:
424
if getattr(self, "checker", None) is None:
466
425
return
467
426
logger.debug(u"Stopping checker for %(name)s", vars(self))
468
427
try:
474
433
if error.errno != errno.ESRCH: # No such process
475
434
raise
476
435
self.checker = None
436
if self.use_dbus:
437
self.PropertyChanged(dbus.String(u"checker_running"),
438
dbus.Boolean(False, variant_level=1))
477
439
478
440
def still_valid(self):
479
441
"""Has the timeout not yet passed for this client?"""
480
if not getattr(self, u"enabled", False):
442
if not getattr(self, "enabled", False):
481
443
return False
482
444
now = datetime.datetime.utcnow()
483
445
if self.last_checked_ok is None:
484
446
return now < (self.created + self.timeout)
485
447
else:
486
448
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
449
779
450
## D-Bus methods & signals
780
_interface = u"se.bsnet.fukt.Mandos.Client"
451
_interface = u"org.mandos_system.Mandos.Client"
781
452
782
# CheckedOK - method
783
@dbus.service.method(_interface)
784
def CheckedOK(self):
785
return self.checked_ok()
453
# BumpTimeout - method
454
BumpTimeout = dbus.service.method(_interface)(bump_timeout)
455
BumpTimeout.__name__ = "BumpTimeout"
786
456
787
457
# CheckerCompleted - signal
788
@dbus.service.signal(_interface, signature=u"nxs")
789
def CheckerCompleted(self, exitcode, waitstatus, command):
458
@dbus.service.signal(_interface, signature="bqs")
459
def CheckerCompleted(self, success, condition, command):
790
460
"D-Bus signal"
791
461
pass
792
462
793
463
# CheckerStarted - signal
794
@dbus.service.signal(_interface, signature=u"s")
464
@dbus.service.signal(_interface, signature="s")
795
465
def CheckerStarted(self, command):
796
466
"D-Bus signal"
797
467
pass
798
468
469
# GetAllProperties - method
470
@dbus.service.method(_interface, out_signature="a{sv}")
471
def GetAllProperties(self):
472
"D-Bus method"
473
return dbus.Dictionary({
474
dbus.String("name"):
475
dbus.String(self.name, variant_level=1),
476
dbus.String("fingerprint"):
477
dbus.String(self.fingerprint, variant_level=1),
478
dbus.String("host"):
479
dbus.String(self.host, variant_level=1),
480
dbus.String("created"):
481
_datetime_to_dbus(self.created, variant_level=1),
482
dbus.String("last_enabled"):
483
(_datetime_to_dbus(self.last_enabled,
484
variant_level=1)
485
if self.last_enabled is not None
486
else dbus.Boolean(False, variant_level=1)),
487
dbus.String("enabled"):
488
dbus.Boolean(self.enabled, variant_level=1),
489
dbus.String("last_checked_ok"):
490
(_datetime_to_dbus(self.last_checked_ok,
491
variant_level=1)
492
if self.last_checked_ok is not None
493
else dbus.Boolean (False, variant_level=1)),
494
dbus.String("timeout"):
495
dbus.UInt64(self.timeout_milliseconds(),
496
variant_level=1),
497
dbus.String("interval"):
498
dbus.UInt64(self.interval_milliseconds(),
499
variant_level=1),
500
dbus.String("checker"):
501
dbus.String(self.checker_command,
502
variant_level=1),
503
dbus.String("checker_running"):
504
dbus.Boolean(self.checker is not None,
505
variant_level=1),
506
}, signature="sv")
507
508
# IsStillValid - method
509
IsStillValid = (dbus.service.method(_interface, out_signature="b")
510
(still_valid))
511
IsStillValid.__name__ = "IsStillValid"
512
799
513
# PropertyChanged - signal
800
@dbus.service.signal(_interface, signature=u"sv")
514
@dbus.service.signal(_interface, signature="sv")
801
515
def PropertyChanged(self, property, value):
802
516
"D-Bus signal"
803
517
pass
804
518
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
519
# SetChecker - method
520
@dbus.service.method(_interface, in_signature="s")
521
def SetChecker(self, checker):
522
"D-Bus setter method"
523
self.checker_command = checker
524
# Emit D-Bus signal
525
self.PropertyChanged(dbus.String(u"checker"),
526
dbus.String(self.checker_command,
527
variant_level=1))
528
529
# SetHost - method
530
@dbus.service.method(_interface, in_signature="s")
531
def SetHost(self, host):
532
"D-Bus setter method"
533
self.host = host
534
# Emit D-Bus signal
535
self.PropertyChanged(dbus.String(u"host"),
536
dbus.String(self.host, variant_level=1))
537
538
# SetInterval - method
539
@dbus.service.method(_interface, in_signature="t")
540
def SetInterval(self, milliseconds):
541
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
542
# Emit D-Bus signal
543
self.PropertyChanged(dbus.String(u"interval"),
544
(dbus.UInt64(self.interval_milliseconds(),
545
variant_level=1)))
546
547
# SetSecret - method
548
@dbus.service.method(_interface, in_signature="ay",
549
byte_arrays=True)
550
def SetSecret(self, secret):
551
"D-Bus setter method"
552
self.secret = str(secret)
553
554
# SetTimeout - method
555
@dbus.service.method(_interface, in_signature="t")
556
def SetTimeout(self, milliseconds):
557
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
558
# Emit D-Bus signal
559
self.PropertyChanged(dbus.String(u"timeout"),
560
(dbus.UInt64(self.timeout_milliseconds(),
561
variant_level=1)))
816
562
817
563
# Enable - method
818
@dbus.service.method(_interface)
819
def Enable(self):
820
"D-Bus method"
821
self.enable()
564
Enable = dbus.service.method(_interface)(enable)
565
Enable.__name__ = "Enable"
822
566
823
567
# StartChecker - method
824
568
@dbus.service.method(_interface)
833
577
self.disable()
834
578
835
579
# 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)
580
StopChecker = dbus.service.method(_interface)(stop_checker)
581
StopChecker.__name__ = "StopChecker"
975
582
976
583
del _interface
977
584
978
585
979
class ClientHandler(socketserver.BaseRequestHandler, object):
980
"""A class to handle client connections.
981
982
Instantiated once for each connection to handle it.
586
def peer_certificate(session):
587
"Return the peer's OpenPGP certificate as a bytestring"
588
# If not an OpenPGP certificate...
589
if (gnutls.library.functions
590
.gnutls_certificate_type_get(session._c_object)
591
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
592
# ...do the normal thing
593
return session.peer_certificate
594
list_size = ctypes.c_uint()
595
cert_list = (gnutls.library.functions
596
.gnutls_certificate_get_peers
597
(session._c_object, ctypes.byref(list_size)))
598
if list_size.value == 0:
599
return None
600
cert = cert_list[0]
601
return ctypes.string_at(cert.data, cert.size)
602
603
604
def fingerprint(openpgp):
605
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
606
# New GnuTLS "datum" with the OpenPGP public key
607
datum = (gnutls.library.types
608
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
609
ctypes.POINTER
610
(ctypes.c_ubyte)),
611
ctypes.c_uint(len(openpgp))))
612
# New empty GnuTLS certificate
613
crt = gnutls.library.types.gnutls_openpgp_crt_t()
614
(gnutls.library.functions
615
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
616
# Import the OpenPGP public key into the certificate
617
(gnutls.library.functions
618
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
619
gnutls.library.constants
620
.GNUTLS_OPENPGP_FMT_RAW))
621
# Verify the self signature in the key
622
crtverify = ctypes.c_uint()
623
(gnutls.library.functions
624
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
625
if crtverify.value != 0:
626
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
627
raise gnutls.errors.CertificateSecurityError("Verify failed")
628
# New buffer for the fingerprint
629
buf = ctypes.create_string_buffer(20)
630
buf_len = ctypes.c_size_t()
631
# Get the fingerprint from the certificate into the buffer
632
(gnutls.library.functions
633
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
634
ctypes.byref(buf_len)))
635
# Deinit the certificate
636
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
637
# Convert the buffer to a Python bytestring
638
fpr = ctypes.string_at(buf, buf_len.value)
639
# Convert the bytestring to hexadecimal notation
640
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
641
return hex_fpr
642
643
644
class TCP_handler(SocketServer.BaseRequestHandler, object):
645
"""A TCP request handler class.
646
Instantiated by IPv6_TCPServer for each request to handle it.
983
647
Note: This will run in its own forked process."""
984
648
985
649
def handle(self):
986
650
logger.info(u"TCP connection from: %s",
987
651
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):
1147
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1148
652
session = (gnutls.connection
653
.ClientSession(self.request,
654
gnutls.connection
655
.X509Credentials()))
656
657
line = self.request.makefile().readline()
658
logger.debug(u"Protocol version: %r", line)
659
try:
660
if int(line.strip().split()[0]) > 1:
661
raise RuntimeError
662
except (ValueError, IndexError, RuntimeError), error:
663
logger.error(u"Unknown protocol version: %s", error)
664
return
665
666
# Note: gnutls.connection.X509Credentials is really a generic
667
# GnuTLS certificate credentials object so long as no X.509
668
# keys are added to it. Therefore, we can use it here despite
669
# using OpenPGP certificates.
670
671
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
672
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
673
# "+DHE-DSS"))
674
# Use a fallback default, since this MUST be set.
675
priority = self.server.settings.get("priority", "NORMAL")
676
(gnutls.library.functions
677
.gnutls_priority_set_direct(session._c_object,
678
priority, None))
679
680
try:
681
session.handshake()
682
except gnutls.errors.GNUTLSError, error:
683
logger.warning(u"Handshake failed: %s", error)
684
# Do not run session.bye() here: the session is not
685
# established. Just abandon the request.
686
return
687
try:
688
fpr = fingerprint(peer_certificate(session))
689
except (TypeError, gnutls.errors.GNUTLSError), error:
690
logger.warning(u"Bad certificate: %s", error)
691
session.bye()
692
return
693
logger.debug(u"Fingerprint: %s", fpr)
694
for c in self.server.clients:
695
if c.fingerprint == fpr:
696
client = c
697
break
698
else:
699
logger.warning(u"Client not found for fingerprint: %s",
700
fpr)
701
session.bye()
702
return
703
# Have to check if client.still_valid(), since it is possible
704
# that the client timed out while establishing the GnuTLS
705
# session.
706
if not client.still_valid():
707
logger.warning(u"Client %(name)s is invalid",
708
vars(client))
709
session.bye()
710
return
711
## This won't work here, since we're in a fork.
712
# client.bump_timeout()
713
sent_size = 0
714
while sent_size < len(client.secret):
715
sent = session.send(client.secret[sent_size:])
716
logger.debug(u"Sent: %d, remaining: %d",
717
sent, len(client.secret)
718
- (sent_size + sent))
719
sent_size += sent
720
session.bye()
721
722
723
class IPv6_TCPServer(SocketServer.ForkingMixIn,
724
SocketServer.TCPServer, object):
725
"""IPv6 TCP server. Accepts 'None' as address and/or port.
1149
726
Attributes:
727
settings: Server settings
728
clients: Set() of Client objects
1150
729
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
730
"""
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)
731
address_family = socket.AF_INET6
732
def __init__(self, *args, **kwargs):
733
if "settings" in kwargs:
734
self.settings = kwargs["settings"]
735
del kwargs["settings"]
736
if "clients" in kwargs:
737
self.clients = kwargs["clients"]
738
del kwargs["clients"]
739
self.enabled = False
740
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
1161
741
def server_bind(self):
1162
742
"""This overrides the normal server_bind() function
1163
743
to bind to an interface if one was specified, and also NOT to
1164
744
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
745
if self.settings["interface"]:
746
# 25 is from /usr/include/asm-i486/socket.h
747
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
748
try:
749
self.socket.setsockopt(socket.SOL_SOCKET,
750
SO_BINDTODEVICE,
751
self.settings["interface"])
752
except socket.error, error:
753
if error[0] == errno.EPERM:
754
logger.error(u"No permission to"
755
u" bind to interface %s",
756
self.settings["interface"])
757
else:
758
raise error
1187
759
# Only bind(2) the socket if we really need to.
1188
760
if self.server_address[0] or self.server_address[1]:
1189
761
if not self.server_address[0]:
1190
if self.address_family == socket.AF_INET6:
1191
any_address = u"::" # in6addr_any
1192
else:
1193
any_address = socket.INADDR_ANY
1194
self.server_address = (any_address,
762
in6addr_any = "::"
763
self.server_address = (in6addr_any,
1195
764
self.server_address[1])
1196
765
elif not self.server_address[1]:
1197
766
self.server_address = (self.server_address[0],
1198
767
0)
1199
# if self.interface:
768
# if self.settings["interface"]:
1200
769
# self.server_address = (self.server_address[0],
1201
770
# 0, # port
1202
771
# 0, # flowinfo
1203
772
# 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)
773
# (self.settings
774
# ["interface"]))
775
return super(IPv6_TCPServer, self).server_bind()
1231
776
def server_activate(self):
1232
777
if self.enabled:
1233
return socketserver.TCPServer.server_activate(self)
778
return super(IPv6_TCPServer, self).server_activate()
1234
779
def enable(self):
1235
780
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
781
1311
782
1312
783
def string_to_delta(interval):
1313
784
"""Parse a string and return a datetime.timedelta
1314
1315
>>> string_to_delta(u'7d')
785
786
>>> string_to_delta('7d')
1316
787
datetime.timedelta(7)
1317
>>> string_to_delta(u'60s')
788
>>> string_to_delta('60s')
1318
789
datetime.timedelta(0, 60)
1319
>>> string_to_delta(u'60m')
790
>>> string_to_delta('60m')
1320
791
datetime.timedelta(0, 3600)
1321
>>> string_to_delta(u'24h')
792
>>> string_to_delta('24h')
1322
793
datetime.timedelta(1)
1323
794
>>> string_to_delta(u'1w')
1324
795
datetime.timedelta(7)
1325
>>> string_to_delta(u'5m 30s')
796
>>> string_to_delta('5m 30s')
1326
797
datetime.timedelta(0, 330)
1327
798
"""
1328
799
timevalue = datetime.timedelta(0)
1348
819
return timevalue
1349
820
1350
821
822
def server_state_changed(state):
823
"""Derived from the Avahi example code"""
824
if state == avahi.SERVER_COLLISION:
825
logger.error(u"Zeroconf server name collision")
826
service.remove()
827
elif state == avahi.SERVER_RUNNING:
828
service.add()
829
830
831
def entry_group_state_changed(state, error):
832
"""Derived from the Avahi example code"""
833
logger.debug(u"Avahi state change: %i", state)
834
835
if state == avahi.ENTRY_GROUP_ESTABLISHED:
836
logger.debug(u"Zeroconf service established.")
837
elif state == avahi.ENTRY_GROUP_COLLISION:
838
logger.warning(u"Zeroconf service name collision.")
839
service.rename()
840
elif state == avahi.ENTRY_GROUP_FAILURE:
841
logger.critical(u"Avahi: Error in group state changed %s",
842
unicode(error))
843
raise AvahiGroupError(u"State changed: %s" % unicode(error))
844
1351
845
def if_nametoindex(interface):
1352
"""Call the C function if_nametoindex(), or equivalent
1353
1354
Note: This function cannot accept a unicode string."""
846
"""Call the C function if_nametoindex(), or equivalent"""
1355
847
global if_nametoindex
1356
848
try:
1357
849
if_nametoindex = (ctypes.cdll.LoadLibrary
1358
(ctypes.util.find_library(u"c"))
850
(ctypes.util.find_library("c"))
1359
851
.if_nametoindex)
1360
852
except (OSError, AttributeError):
1361
logger.warning(u"Doing if_nametoindex the hard way")
853
if "struct" not in sys.modules:
854
import struct
855
if "fcntl" not in sys.modules:
856
import fcntl
1362
857
def if_nametoindex(interface):
1363
858
"Get an interface index the hard way, i.e. using fcntl()"
1364
859
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1365
860
with closing(socket.socket()) as s:
1366
861
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]
862
struct.pack("16s16x", interface))
863
interface_index = struct.unpack("I", ifreq[16:20])[0]
1371
864
return interface_index
1372
865
return if_nametoindex(interface)
1373
866
1374
867
1375
868
def daemon(nochdir = False, noclose = False):
1376
869
"""See daemon(3). Standard BSD Unix function.
1377
1378
870
This should really exist as os.daemon, but it doesn't (yet)."""
1379
871
if os.fork():
1380
872
sys.exit()
1381
873
os.setsid()
1382
874
if not nochdir:
1383
os.chdir(u"/")
875
os.chdir("/")
1384
876
if os.fork():
1385
877
sys.exit()
1386
878
if not noclose:
1388
880
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1389
881
if not stat.S_ISCHR(os.fstat(null).st_mode):
1390
882
raise OSError(errno.ENODEV,
1391
u"/dev/null not a character device")
883
"/dev/null not a character device")
1392
884
os.dup2(null, sys.stdin.fileno())
1393
885
os.dup2(null, sys.stdout.fileno())
1394
886
os.dup2(null, sys.stderr.fileno())
1397
889
1398
890
1399
891
def main():
1400
1401
##################################################################
1402
# Parsing of options, both command line and config file
1403
1404
892
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")
893
parser.add_option("-i", "--interface", type="string",
894
metavar="IF", help="Bind to interface IF")
895
parser.add_option("-a", "--address", type="string",
896
help="Address to listen for requests on")
897
parser.add_option("-p", "--port", type="int",
898
help="Port number to receive requests on")
899
parser.add_option("--check", action="store_true",
900
help="Run self-test")
901
parser.add_option("--debug", action="store_true",
902
help="Debug mode; run in foreground and log to"
903
" terminal")
904
parser.add_option("--priority", type="string", help="GnuTLS"
905
" priority string (see GnuTLS documentation)")
906
parser.add_option("--servicename", type="string", metavar="NAME",
907
help="Zeroconf service name")
908
parser.add_option("--configdir", type="string",
909
default="/etc/mandos", metavar="DIR",
910
help="Directory to search for configuration"
911
" files")
912
parser.add_option("--no-dbus", action="store_false",
913
dest="use_dbus",
914
help="Do not provide D-Bus system bus"
915
" interface")
1429
916
options = parser.parse_args()[0]
1430
917
1431
918
if options.check:
1434
921
sys.exit()
1435
922
1436
923
# 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",
924
server_defaults = { "interface": "",
925
"address": "",
926
"port": "",
927
"debug": "False",
928
"priority":
929
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
930
"servicename": "Mandos",
931
"use_dbus": "True",
1446
932
}
1447
933
1448
934
# Parse config file for server-global settings
1449
server_config = configparser.SafeConfigParser(server_defaults)
935
server_config = ConfigParser.SafeConfigParser(server_defaults)
1450
936
del server_defaults
1451
server_config.read(os.path.join(options.configdir,
1452
u"mandos.conf"))
937
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1453
938
# Convert the SafeConfigParser object to a dict
1454
939
server_settings = server_config.defaults()
1455
# 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)
1459
if server_settings["port"]:
1460
server_settings["port"] = server_config.getint(u"DEFAULT",
1461
u"port")
940
# Use getboolean on the boolean config options
941
server_settings["debug"] = (server_config.getboolean
942
("DEFAULT", "debug"))
943
server_settings["use_dbus"] = (server_config.getboolean
944
("DEFAULT", "use_dbus"))
1462
945
del server_config
1463
946
1464
947
# Override the settings from the config file with command line
1465
948
# 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"):
949
for option in ("interface", "address", "port", "debug",
950
"priority", "servicename", "configdir",
951
"use_dbus"):
1469
952
value = getattr(options, option)
1470
953
if value is not None:
1471
954
server_settings[option] = value
1472
955
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
956
# Now we have our good server settings in "server_settings"
1478
957
1479
##################################################################
1480
1481
958
# For convenience
1482
debug = server_settings[u"debug"]
1483
use_dbus = server_settings[u"use_dbus"]
1484
use_ipv6 = server_settings[u"use_ipv6"]
959
debug = server_settings["debug"]
960
use_dbus = server_settings["use_dbus"]
1485
961
1486
962
if not debug:
1487
963
syslogger.setLevel(logging.WARNING)
1488
964
console.setLevel(logging.WARNING)
1489
965
1490
if server_settings[u"servicename"] != u"Mandos":
966
if server_settings["servicename"] != "Mandos":
1491
967
syslogger.setFormatter(logging.Formatter
1492
(u'Mandos (%s) [%%(process)d]:'
1493
u' %%(levelname)s: %%(message)s'
1494
% server_settings[u"servicename"]))
968
('Mandos (%s): %%(levelname)s:'
969
' %%(message)s'
970
% server_settings["servicename"]))
1495
971
1496
972
# 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"",
973
client_defaults = { "timeout": "1h",
974
"interval": "5m",
975
"checker": "fping -q -- %%(host)s",
976
"host": "",
1501
977
}
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"
1518
try:
1519
pidfile = open(pidfilename, u"w")
1520
except IOError:
1521
logger.error(u"Could not open file %r", pidfilename)
1522
1523
try:
1524
uid = pwd.getpwnam(u"_mandos").pw_uid
1525
gid = pwd.getpwnam(u"_mandos").pw_gid
978
client_config = ConfigParser.SafeConfigParser(client_defaults)
979
client_config.read(os.path.join(server_settings["configdir"],
980
"clients.conf"))
981
982
clients = Set()
983
tcp_server = IPv6_TCPServer((server_settings["address"],
984
server_settings["port"]),
985
TCP_handler,
986
settings=server_settings,
987
clients=clients)
988
pidfilename = "/var/run/mandos.pid"
989
try:
990
pidfile = open(pidfilename, "w")
991
except IOError, error:
992
logger.error("Could not open file %r", pidfilename)
993
994
try:
995
uid = pwd.getpwnam("_mandos").pw_uid
996
gid = pwd.getpwnam("_mandos").pw_gid
1526
997
except KeyError:
1527
998
try:
1528
uid = pwd.getpwnam(u"mandos").pw_uid
1529
gid = pwd.getpwnam(u"mandos").pw_gid
999
uid = pwd.getpwnam("mandos").pw_uid
1000
gid = pwd.getpwnam("mandos").pw_gid
1530
1001
except KeyError:
1531
1002
try:
1532
uid = pwd.getpwnam(u"nobody").pw_uid
1533
gid = pwd.getpwnam(u"nobody").pw_gid
1003
uid = pwd.getpwnam("nobody").pw_uid
1004
gid = pwd.getpwnam("nogroup").pw_gid
1534
1005
except KeyError:
1535
1006
uid = 65534
1536
1007
gid = 65534
1537
1008
try:
1009
os.setuid(uid)
1538
1010
os.setgid(gid)
1539
os.setuid(uid)
1540
1011
except OSError, error:
1541
1012
if error[0] != errno.EPERM:
1542
1013
raise error
1543
1014
1544
# Enable all possible GnuTLS debugging
1545
if debug:
1546
# "Use a log level over 10 to enable all debugging options."
1547
# - GnuTLS manual
1548
gnutls.library.functions.gnutls_global_set_log_level(11)
1549
1550
@gnutls.library.types.gnutls_log_func
1551
def debug_gnutls(level, string):
1552
logger.debug(u"GnuTLS: %s", string[:-1])
1553
1554
(gnutls.library.functions
1555
.gnutls_global_set_log_function(debug_gnutls))
1015
global service
1016
service = AvahiService(name = server_settings["servicename"],
1017
servicetype = "_mandos._tcp", )
1018
if server_settings["interface"]:
1019
service.interface = (if_nametoindex
1020
(server_settings["interface"]))
1556
1021
1557
1022
global main_loop
1023
global bus
1024
global server
1558
1025
# From the Avahi example code
1559
1026
DBusGMainLoop(set_as_default=True )
1560
1027
main_loop = gobject.MainLoop()
1561
1028
bus = dbus.SystemBus()
1029
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1030
avahi.DBUS_PATH_SERVER),
1031
avahi.DBUS_INTERFACE_SERVER)
1562
1032
# End of Avahi example code
1563
1033
if use_dbus:
1564
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"])))
1034
bus_name = dbus.service.BusName(u"org.mandos-system.Mandos",
1035
bus)
1572
1036
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:
1037
clients.update(Set(Client(name = section,
1038
config
1039
= dict(client_config.items(section)),
1040
use_dbus = use_dbus)
1041
for section in client_config.sections()))
1042
if not clients:
1581
1043
logger.warning(u"No clients defined")
1582
1044
1583
1045
if debug:
1593
1055
daemon()
1594
1056
1595
1057
try:
1596
with closing(pidfile):
1597
pid = os.getpid()
1598
pidfile.write(str(pid) + "\n")
1058
pid = os.getpid()
1059
pidfile.write(str(pid) + "\n")
1060
pidfile.close()
1599
1061
del pidfile
1600
1062
except IOError:
1601
1063
logger.error(u"Could not write to file %r with PID %d",
1607
1069
1608
1070
def cleanup():
1609
1071
"Cleanup function; run on exit"
1610
service.cleanup()
1072
global group
1073
# From the Avahi example code
1074
if not group is None:
1075
group.Free()
1076
group = None
1077
# End of Avahi example code
1611
1078
1612
while tcp_server.clients:
1613
client = tcp_server.clients.pop()
1079
while clients:
1080
client = clients.pop()
1614
1081
client.disable_hook = None
1615
1082
client.disable()
1616
1083
1622
1089
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1623
1090
1624
1091
if use_dbus:
1625
class MandosDBusService(dbus.service.Object):
1092
class MandosServer(dbus.service.Object):
1626
1093
"""A D-Bus proxy object"""
1627
1094
def __init__(self):
1628
dbus.service.Object.__init__(self, bus, u"/")
1629
_interface = u"se.bsnet.fukt.Mandos"
1630
1631
@dbus.service.signal(_interface, signature=u"oa{sv}")
1095
dbus.service.Object.__init__(self, bus,
1096
"/Mandos")
1097
_interface = u"org.mandos_system.Mandos"
1098
1099
@dbus.service.signal(_interface, signature="oa{sv}")
1632
1100
def ClientAdded(self, objpath, properties):
1633
1101
"D-Bus signal"
1634
1102
pass
1635
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")
1642
def ClientRemoved(self, objpath, name):
1643
"D-Bus signal"
1644
pass
1645
1646
@dbus.service.method(_interface, out_signature=u"ao")
1103
1104
@dbus.service.signal(_interface, signature="o")
1105
def ClientRemoved(self, objpath):
1106
"D-Bus signal"
1107
pass
1108
1109
@dbus.service.method(_interface, out_signature="ao")
1647
1110
def GetAllClients(self):
1648
"D-Bus method"
1649
return dbus.Array(c.dbus_object_path
1650
for c in tcp_server.clients)
1651
1652
@dbus.service.method(_interface,
1653
out_signature=u"a{oa{sv}}")
1111
return dbus.Array(c.dbus_object_path for c in clients)
1112
1113
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1654
1114
def GetAllClientsWithProperties(self):
1655
"D-Bus method"
1656
1115
return dbus.Dictionary(
1657
((c.dbus_object_path, c.GetAll(u""))
1658
for c in tcp_server.clients),
1659
signature=u"oa{sv}")
1660
1661
@dbus.service.method(_interface, in_signature=u"o")
1116
((c.dbus_object_path, c.GetAllProperties())
1117
for c in clients),
1118
signature="oa{sv}")
1119
1120
@dbus.service.method(_interface, in_signature="o")
1662
1121
def RemoveClient(self, object_path):
1663
"D-Bus method"
1664
for c in tcp_server.clients:
1122
for c in clients:
1665
1123
if c.dbus_object_path == object_path:
1666
tcp_server.clients.remove(c)
1667
c.remove_from_connection()
1124
clients.remove(c)
1668
1125
# Don't signal anything except ClientRemoved
1669
c.disable(signal=False)
1126
c.use_dbus = False
1127
c.disable()
1670
1128
# Emit D-Bus signal
1671
self.ClientRemoved(object_path, c.name)
1129
self.ClientRemoved(object_path)
1672
1130
return
1673
1131
raise KeyError
1674
1132
@dbus.service.method(_interface)
1133
def Quit(self):
1134
main_loop.quit()
1135
1675
1136
del _interface
1676
1677
mandos_dbus_service = MandosDBusService()
1678
1679
for client in tcp_server.clients:
1137
1138
mandos_server = MandosServer()
1139
1140
for client in clients:
1680
1141
if use_dbus:
1681
1142
# Emit D-Bus signal
1682
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1683
client.GetAll(u""))
1143
mandos_server.ClientAdded(client.dbus_object_path,
1144
client.GetAllProperties())
1684
1145
client.enable()
1685
1146
1686
1147
tcp_server.enable()
1688
1149
1689
1150
# Find out what port we got
1690
1151
service.port = tcp_server.socket.getsockname()[1]
1691
if use_ipv6:
1692
logger.info(u"Now listening on address %r, port %d,"
1693
" flowinfo %d, scope_id %d"
1694
% tcp_server.socket.getsockname())
1695
else: # IPv4
1696
logger.info(u"Now listening on address %r, port %d"
1697
% tcp_server.socket.getsockname())
1152
logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
1153
u" scope_id %d" % tcp_server.socket.getsockname())
1698
1154
1699
1155
#service.interface = tcp_server.socket.getsockname()[3]
1700
1156
1701
1157
try:
1702
1158
# From the Avahi example code
1159
server.connect_to_signal("StateChanged", server_state_changed)
1703
1160
try:
1704
service.activate()
1161
server_state_changed(server.GetState())
1705
1162
except dbus.exceptions.DBusException, error:
1706
1163
logger.critical(u"DBusException: %s", error)
1707
1164
sys.exit(1)
1719
1176
sys.exit(1)
1720
1177
except KeyboardInterrupt:
1721
1178
if debug:
1722
print >> sys.stderr
1723
logger.debug(u"Server received KeyboardInterrupt")
1724
logger.debug(u"Server exiting")
1179
print
1725
1180
1726
1181
if __name__ == '__main__':
1727
1182
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0