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- Committer: Björn Påhlsson
- Date: 2010-05-18 16:56:54 UTC
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 421.
- Revision ID: belorn@braxen-20100518165654-vanhudm9qzyn6c3s
half working on-demand password and approved code
- files removed:
- DBUS-API
- debian/source
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
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# Everything else is
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# Copyright © 2008-2012 Teddy Hogeborn
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# Copyright © 2008-2012 Björn Påhlsson
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@recompile.se>.
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# Contact the authors at <mandos@fukt.bsnet.se>.
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32
#
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33
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from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
34
from __future__ import division, with_statement, absolute_import
36
35
37
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import SocketServer as socketserver
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import socket
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import argparse
38
import optparse
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import datetime
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import errno
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import gnutls.crypto
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import fcntl
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import functools
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import cPickle as pickle
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import multiprocessing
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import types
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import binascii
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import tempfile
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63
69
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import dbus
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import dbus.service
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import ctypes.util
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import xml.dom.minidom
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import inspect
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import GnuPGInterface
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73
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try:
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75
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
79
except ImportError:
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80
SO_BINDTODEVICE = None
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81
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version = "1.5.3"
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stored_state_file = "clients.pickle"
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logger = logging.getLogger()
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version = "1.0.14"
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logger = logging.Logger(u'mandos')
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syslogger = (logging.handlers.SysLogHandler
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = str("/dev/log")))
95
96
try:
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
100
except (OSError, AttributeError):
101
def if_nametoindex(interface):
102
"Get an interface index the hard way, i.e. using fcntl()"
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
with contextlib.closing(socket.socket()) as s:
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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
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struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
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ifreq[16:20])[0]
110
return interface_index
111
112
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def initlogger(debug, level=logging.WARNING):
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"""init logger and add loglevel"""
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syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
118
' %(message)s'))
119
logger.addHandler(syslogger)
120
121
if debug:
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
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' [%(process)d]:'
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' %(levelname)s:'
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' %(message)s'))
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logger.addHandler(console)
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logger.setLevel(level)
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130
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class PGPError(Exception):
132
"""Exception if encryption/decryption fails"""
133
pass
134
135
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class PGPEngine(object):
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"""A simple class for OpenPGP symmetric encryption & decryption"""
138
def __init__(self):
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self.gnupg = GnuPGInterface.GnuPG()
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self.tempdir = tempfile.mkdtemp(prefix="mandos-")
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self.gnupg = GnuPGInterface.GnuPG()
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self.gnupg.options.meta_interactive = False
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self.gnupg.options.homedir = self.tempdir
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self.gnupg.options.extra_args.extend(['--force-mdc',
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'--quiet',
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'--no-use-agent'])
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148
def __enter__(self):
149
return self
150
151
def __exit__ (self, exc_type, exc_value, traceback):
152
self._cleanup()
153
return False
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155
def __del__(self):
156
self._cleanup()
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def _cleanup(self):
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if self.tempdir is not None:
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# Delete contents of tempdir
161
for root, dirs, files in os.walk(self.tempdir,
162
topdown = False):
163
for filename in files:
164
os.remove(os.path.join(root, filename))
165
for dirname in dirs:
166
os.rmdir(os.path.join(root, dirname))
167
# Remove tempdir
168
os.rmdir(self.tempdir)
169
self.tempdir = None
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171
def password_encode(self, password):
172
# Passphrase can not be empty and can not contain newlines or
173
# NUL bytes. So we prefix it and hex encode it.
174
return b"mandos" + binascii.hexlify(password)
175
176
def encrypt(self, data, password):
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
179
try:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
184
f.write(data)
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
187
proc.wait()
188
except IOError as e:
189
raise PGPError(e)
190
self.gnupg.passphrase = None
191
return ciphertext
192
193
def decrypt(self, data, password):
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
196
try:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
201
f.write(data)
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
204
proc.wait()
205
except IOError as e:
206
raise PGPError(e)
207
self.gnupg.passphrase = None
208
return decrypted_plaintext
209
210
88
address = "/dev/log"))
89
syslogger.setFormatter(logging.Formatter
90
(u'Mandos [%(process)d]: %(levelname)s:'
91
u' %(message)s'))
92
logger.addHandler(syslogger)
93
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console = logging.StreamHandler()
95
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
96
u' %(levelname)s:'
97
u' %(message)s'))
98
logger.addHandler(console)
211
99
212
100
class AvahiError(Exception):
213
101
def __init__(self, value, *args, **kwargs):
229
117
Attributes:
230
118
interface: integer; avahi.IF_UNSPEC or an interface index.
231
119
Used to optionally bind to the specified interface.
232
name: string; Example: 'Mandos'
233
type: string; Example: '_mandos._tcp'.
120
name: string; Example: u'Mandos'
121
type: string; Example: u'_mandos._tcp'.
234
122
See <http://www.dns-sd.org/ServiceTypes.html>
235
123
port: integer; what port to announce
236
124
TXT: list of strings; TXT record for the service
245
133
"""
246
134
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
247
135
servicetype = None, port = None, TXT = None,
248
domain = "", host = "", max_renames = 32768,
136
domain = u"", host = u"", max_renames = 32768,
249
137
protocol = avahi.PROTO_UNSPEC, bus = None):
250
138
self.interface = interface
251
139
self.name = name
260
148
self.group = None # our entry group
261
149
self.server = None
262
150
self.bus = bus
263
self.entry_group_state_changed_match = None
264
151
def rename(self):
265
152
"""Derived from the Avahi example code"""
266
153
if self.rename_count >= self.max_renames:
267
logger.critical("No suitable Zeroconf service name found"
268
" after %i retries, exiting.",
154
logger.critical(u"No suitable Zeroconf service name found"
155
u" after %i retries, exiting.",
269
156
self.rename_count)
270
raise AvahiServiceError("Too many renames")
271
self.name = unicode(self.server
272
.GetAlternativeServiceName(self.name))
273
logger.info("Changing Zeroconf service name to %r ...",
274
self.name)
157
raise AvahiServiceError(u"Too many renames")
158
self.name = self.server.GetAlternativeServiceName(self.name)
159
logger.info(u"Changing Zeroconf service name to %r ...",
160
unicode(self.name))
161
syslogger.setFormatter(logging.Formatter
162
(u'Mandos (%s) [%%(process)d]:'
163
u' %%(levelname)s: %%(message)s'
164
% self.name))
275
165
self.remove()
276
try:
277
self.add()
278
except dbus.exceptions.DBusException as error:
279
logger.critical("DBusException: %s", error)
280
self.cleanup()
281
os._exit(1)
166
self.add()
282
167
self.rename_count += 1
283
168
def remove(self):
284
169
"""Derived from the Avahi example code"""
285
if self.entry_group_state_changed_match is not None:
286
self.entry_group_state_changed_match.remove()
287
self.entry_group_state_changed_match = None
288
170
if self.group is not None:
289
171
self.group.Reset()
290
172
def add(self):
291
173
"""Derived from the Avahi example code"""
292
self.remove()
293
174
if self.group is None:
294
175
self.group = dbus.Interface(
295
176
self.bus.get_object(avahi.DBUS_NAME,
296
177
self.server.EntryGroupNew()),
297
178
avahi.DBUS_INTERFACE_ENTRY_GROUP)
298
self.entry_group_state_changed_match = (
299
self.group.connect_to_signal(
300
'StateChanged', self.entry_group_state_changed))
301
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
179
self.group.connect_to_signal('StateChanged',
180
self
181
.entry_group_state_changed)
182
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
302
183
self.name, self.type)
303
184
self.group.AddService(
304
185
self.interface,
311
192
self.group.Commit()
312
193
def entry_group_state_changed(self, state, error):
313
194
"""Derived from the Avahi example code"""
314
logger.debug("Avahi entry group state change: %i", state)
195
logger.debug(u"Avahi state change: %i", state)
315
196
316
197
if state == avahi.ENTRY_GROUP_ESTABLISHED:
317
logger.debug("Zeroconf service established.")
198
logger.debug(u"Zeroconf service established.")
318
199
elif state == avahi.ENTRY_GROUP_COLLISION:
319
logger.info("Zeroconf service name collision.")
200
logger.warning(u"Zeroconf service name collision.")
320
201
self.rename()
321
202
elif state == avahi.ENTRY_GROUP_FAILURE:
322
logger.critical("Avahi: Error in group state changed %s",
203
logger.critical(u"Avahi: Error in group state changed %s",
323
204
unicode(error))
324
raise AvahiGroupError("State changed: %s"
205
raise AvahiGroupError(u"State changed: %s"
325
206
% unicode(error))
326
207
def cleanup(self):
327
208
"""Derived from the Avahi example code"""
328
209
if self.group is not None:
329
try:
330
self.group.Free()
331
except (dbus.exceptions.UnknownMethodException,
332
dbus.exceptions.DBusException):
333
pass
210
self.group.Free()
334
211
self.group = None
335
self.remove()
336
def server_state_changed(self, state, error=None):
212
def server_state_changed(self, state):
337
213
"""Derived from the Avahi example code"""
338
logger.debug("Avahi server state change: %i", state)
339
bad_states = { avahi.SERVER_INVALID:
340
"Zeroconf server invalid",
341
avahi.SERVER_REGISTERING: None,
342
avahi.SERVER_COLLISION:
343
"Zeroconf server name collision",
344
avahi.SERVER_FAILURE:
345
"Zeroconf server failure" }
346
if state in bad_states:
347
if bad_states[state] is not None:
348
if error is None:
349
logger.error(bad_states[state])
350
else:
351
logger.error(bad_states[state] + ": %r", error)
352
self.cleanup()
214
if state == avahi.SERVER_COLLISION:
215
logger.error(u"Zeroconf server name collision")
216
self.remove()
353
217
elif state == avahi.SERVER_RUNNING:
354
218
self.add()
355
else:
356
if error is None:
357
logger.debug("Unknown state: %r", state)
358
else:
359
logger.debug("Unknown state: %r: %r", state, error)
360
219
def activate(self):
361
220
"""Derived from the Avahi example code"""
362
221
if self.server is None:
363
222
self.server = dbus.Interface(
364
223
self.bus.get_object(avahi.DBUS_NAME,
365
avahi.DBUS_PATH_SERVER,
366
follow_name_owner_changes=True),
224
avahi.DBUS_PATH_SERVER),
367
225
avahi.DBUS_INTERFACE_SERVER)
368
self.server.connect_to_signal("StateChanged",
226
self.server.connect_to_signal(u"StateChanged",
369
227
self.server_state_changed)
370
228
self.server_state_changed(self.server.GetState())
371
229
372
class AvahiServiceToSyslog(AvahiService):
373
def rename(self):
374
"""Add the new name to the syslog messages"""
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
379
% self.name))
380
return ret
381
230
382
def timedelta_to_milliseconds(td):
383
"Convert a datetime.timedelta() to milliseconds"
384
return ((td.days * 24 * 60 * 60 * 1000)
385
+ (td.seconds * 1000)
386
+ (td.microseconds // 1000))
387
388
231
class Client(object):
389
232
"""A representation of a client host served by this server.
390
233
391
234
Attributes:
392
approved: bool(); 'None' if not yet approved/disapproved
393
approval_delay: datetime.timedelta(); Time to wait for approval
394
approval_duration: datetime.timedelta(); Duration of one approval
235
name: string; from the config file, used in log messages and
236
D-Bus identifiers
237
fingerprint: string (40 or 32 hexadecimal digits); used to
238
uniquely identify the client
239
secret: bytestring; sent verbatim (over TLS) to client
240
host: string; available for use by the checker command
241
created: datetime.datetime(); (UTC) object creation
242
last_enabled: datetime.datetime(); (UTC)
243
enabled: bool()
244
last_checked_ok: datetime.datetime(); (UTC) or None
245
timeout: datetime.timedelta(); How long from last_checked_ok
246
until this client is disabled
247
interval: datetime.timedelta(); How often to start a new checker
248
disable_hook: If set, called by disable() as disable_hook(self)
395
249
checker: subprocess.Popen(); a running checker process used
396
250
to see if the client lives.
397
251
'None' if no process is running.
398
checker_callback_tag: a gobject event source tag, or None
399
checker_command: string; External command which is run to check
400
if client lives. %() expansions are done at
252
checker_initiator_tag: a gobject event source tag, or None
253
disable_initiator_tag: - '' -
254
checker_callback_tag: - '' -
255
checker_command: string; External command which is run to check if
256
client lives. %() expansions are done at
401
257
runtime with vars(self) as dict, so that for
402
258
instance %(name)s can be used in the command.
403
checker_initiator_tag: a gobject event source tag, or None
404
created: datetime.datetime(); (UTC) object creation
405
client_structure: Object describing what attributes a client has
406
and is used for storing the client at exit
407
259
current_checker_command: string; current running checker_command
408
disable_initiator_tag: a gobject event source tag, or None
409
enabled: bool()
410
fingerprint: string (40 or 32 hexadecimal digits); used to
411
uniquely identify the client
412
host: string; available for use by the checker command
413
interval: datetime.timedelta(); How often to start a new checker
414
last_approval_request: datetime.datetime(); (UTC) or None
415
last_checked_ok: datetime.datetime(); (UTC) or None
416
last_checker_status: integer between 0 and 255 reflecting exit
417
status of last checker. -1 reflects crashed
418
checker, -2 means no checker completed yet.
419
last_enabled: datetime.datetime(); (UTC) or None
420
name: string; from the config file, used in log messages and
421
D-Bus identifiers
422
secret: bytestring; sent verbatim (over TLS) to client
423
timeout: datetime.timedelta(); How long from last_checked_ok
424
until this client is disabled
425
extended_timeout: extra long timeout when secret has been sent
426
runtime_expansions: Allowed attributes for runtime expansion.
427
expires: datetime.datetime(); time (UTC) when a client will be
428
disabled, or None
260
changesignal: File descriptor; written to on object change
261
_reset: File descriptor; for flushing changesignal
262
delay: datetime.timedelta(); how long to wait for approval/secret
263
approved: bool(); None if not yet approved/disapproved
429
264
"""
430
265
431
runtime_expansions = ("approval_delay", "approval_duration",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
434
"last_enabled", "name", "timeout")
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
437
"interval": "2m",
438
"checker": "fping -q -- %%(host)s",
439
"host": "",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
442
"approved_by_default": "True",
443
"enabled": "True",
444
}
266
@staticmethod
267
def _timedelta_to_milliseconds(td):
268
"Convert a datetime.timedelta() to milliseconds"
269
return ((td.days * 24 * 60 * 60 * 1000)
270
+ (td.seconds * 1000)
271
+ (td.microseconds // 1000))
445
272
446
273
def timeout_milliseconds(self):
447
274
"Return the 'timeout' attribute in milliseconds"
448
return timedelta_to_milliseconds(self.timeout)
449
450
def extended_timeout_milliseconds(self):
451
"Return the 'extended_timeout' attribute in milliseconds"
452
return timedelta_to_milliseconds(self.extended_timeout)
275
return self._timedelta_to_milliseconds(self.timeout)
453
276
454
277
def interval_milliseconds(self):
455
278
"Return the 'interval' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.interval)
279
return self._timedelta_to_milliseconds(self.interval)
457
280
458
def approval_delay_milliseconds(self):
459
return timedelta_to_milliseconds(self.approval_delay)
460
461
@staticmethod
462
def config_parser(config):
463
"""Construct a new dict of client settings of this form:
464
{ client_name: {setting_name: value, ...}, ...}
465
with exceptions for any special settings as defined above.
466
NOTE: Must be a pure function. Must return the same result
467
value given the same arguments.
468
"""
469
settings = {}
470
for client_name in config.sections():
471
section = dict(config.items(client_name))
472
client = settings[client_name] = {}
473
474
client["host"] = section["host"]
475
# Reformat values from string types to Python types
476
client["approved_by_default"] = config.getboolean(
477
client_name, "approved_by_default")
478
client["enabled"] = config.getboolean(client_name,
479
"enabled")
480
481
client["fingerprint"] = (section["fingerprint"].upper()
482
.replace(" ", ""))
483
if "secret" in section:
484
client["secret"] = section["secret"].decode("base64")
485
elif "secfile" in section:
486
with open(os.path.expanduser(os.path.expandvars
487
(section["secfile"])),
488
"rb") as secfile:
489
client["secret"] = secfile.read()
490
else:
491
raise TypeError("No secret or secfile for section %s"
492
% section)
493
client["timeout"] = string_to_delta(section["timeout"])
494
client["extended_timeout"] = string_to_delta(
495
section["extended_timeout"])
496
client["interval"] = string_to_delta(section["interval"])
497
client["approval_delay"] = string_to_delta(
498
section["approval_delay"])
499
client["approval_duration"] = string_to_delta(
500
section["approval_duration"])
501
client["checker_command"] = section["checker"]
502
client["last_approval_request"] = None
503
client["last_checked_ok"] = None
504
client["last_checker_status"] = -2
505
506
return settings
507
508
509
def __init__(self, settings, name = None):
281
def __init__(self, name = None, disable_hook=None, config=None):
510
282
"""Note: the 'checker' key in 'config' sets the
511
283
'checker_command' attribute and *not* the 'checker'
512
284
attribute."""
513
285
self.name = name
514
# adding all client settings
515
for setting, value in settings.iteritems():
516
setattr(self, setting, value)
517
518
if self.enabled:
519
if not hasattr(self, "last_enabled"):
520
self.last_enabled = datetime.datetime.utcnow()
521
if not hasattr(self, "expires"):
522
self.expires = (datetime.datetime.utcnow()
523
+ self.timeout)
524
else:
525
self.last_enabled = None
526
self.expires = None
527
528
logger.debug("Creating client %r", self.name)
286
if config is None:
287
config = {}
288
logger.debug(u"Creating client %r", self.name)
529
289
# Uppercase and remove spaces from fingerprint for later
530
290
# comparison purposes with return value from the fingerprint()
531
291
# function
532
logger.debug(" Fingerprint: %s", self.fingerprint)
533
self.created = settings.get("created",
534
datetime.datetime.utcnow())
535
536
# attributes specific for this server instance
292
self.fingerprint = (config[u"fingerprint"].upper()
293
.replace(u" ", u""))
294
logger.debug(u" Fingerprint: %s", self.fingerprint)
295
if u"secret" in config:
296
self._secret = config[u"secret"].decode(u"base64")
297
elif u"secfile" in config:
298
with open(os.path.expanduser(os.path.expandvars
299
(config[u"secfile"])),
300
"rb") as secfile:
301
self._secret = secfile.read()
302
else:
303
#XXX Need to allow secret on demand!
304
raise TypeError(u"No secret or secfile for client %s"
305
% self.name)
306
self.host = config.get(u"host", u"")
307
self.created = datetime.datetime.utcnow()
308
self.enabled = False
309
self.last_enabled = None
310
self.last_checked_ok = None
311
self.timeout = string_to_delta(config[u"timeout"])
312
self.interval = string_to_delta(config[u"interval"])
313
self.disable_hook = disable_hook
537
314
self.checker = None
538
315
self.checker_initiator_tag = None
539
316
self.disable_initiator_tag = None
540
317
self.checker_callback_tag = None
318
self.checker_command = config[u"checker"]
541
319
self.current_checker_command = None
542
self.approved = None
543
self.approvals_pending = 0
544
self.changedstate = (multiprocessing_manager
545
.Condition(multiprocessing_manager
546
.Lock()))
547
self.client_structure = [attr for attr in
548
self.__dict__.iterkeys()
549
if not attr.startswith("_")]
550
self.client_structure.append("client_structure")
551
552
for name, t in inspect.getmembers(type(self),
553
lambda obj:
554
isinstance(obj,
555
property)):
556
if not name.startswith("_"):
557
self.client_structure.append(name)
558
559
# Send notice to process children that client state has changed
560
def send_changedstate(self):
561
with self.changedstate:
562
self.changedstate.notify_all()
563
320
self.last_connect = None
321
self.changesignal, self._reset = os.pipe()
322
self._approved = None #XXX should be based on configfile
323
self.delay = 10; #XXX Should be based on configfile
324
325
def setsecret(self, value):
326
self._secret = value
327
os.write(self.changesignal, "\0")
328
os.read(self._reset, 1)
329
330
secret = property(lambda self: self._secret, setsecret)
331
del setsecret
332
333
def setapproved(self, value):
334
self._approved = value
335
os.write(self.changesignal, "\0")
336
os.read(self._reset, 1)
337
338
approved = property(lambda self: self._approved, setapproved)
339
del setapproved
340
564
341
def enable(self):
565
342
"""Start this client's checker and timeout hooks"""
566
if getattr(self, "enabled", False):
343
if getattr(self, u"enabled", False):
567
344
# Already enabled
568
345
return
569
self.send_changedstate()
570
self.expires = datetime.datetime.utcnow() + self.timeout
571
self.enabled = True
572
346
self.last_enabled = datetime.datetime.utcnow()
573
self.init_checker()
574
575
def disable(self, quiet=True):
576
"""Disable this client."""
577
if not getattr(self, "enabled", False):
578
return False
579
if not quiet:
580
self.send_changedstate()
581
if not quiet:
582
logger.info("Disabling client %s", self.name)
583
if getattr(self, "disable_initiator_tag", False):
584
gobject.source_remove(self.disable_initiator_tag)
585
self.disable_initiator_tag = None
586
self.expires = None
587
if getattr(self, "checker_initiator_tag", False):
588
gobject.source_remove(self.checker_initiator_tag)
589
self.checker_initiator_tag = None
590
self.stop_checker()
591
self.enabled = False
592
# Do not run this again if called by a gobject.timeout_add
593
return False
594
595
def __del__(self):
596
self.disable()
597
598
def init_checker(self):
599
347
# Schedule a new checker to be started an 'interval' from now,
600
348
# and every interval from then on.
601
349
self.checker_initiator_tag = (gobject.timeout_add
605
353
self.disable_initiator_tag = (gobject.timeout_add
606
354
(self.timeout_milliseconds(),
607
355
self.disable))
356
self.enabled = True
608
357
# Also start a new checker *right now*.
609
358
self.start_checker()
610
359
360
def disable(self, quiet=True):
361
"""Disable this client."""
362
if not getattr(self, "enabled", False):
363
return False
364
if not quiet:
365
logger.info(u"Disabling client %s", self.name)
366
if getattr(self, u"disable_initiator_tag", False):
367
gobject.source_remove(self.disable_initiator_tag)
368
self.disable_initiator_tag = None
369
if getattr(self, u"checker_initiator_tag", False):
370
gobject.source_remove(self.checker_initiator_tag)
371
self.checker_initiator_tag = None
372
self.stop_checker()
373
if self.disable_hook:
374
self.disable_hook(self)
375
self.enabled = False
376
# Do not run this again if called by a gobject.timeout_add
377
return False
378
379
def __del__(self):
380
self.disable_hook = None
381
self.disable()
382
611
383
def checker_callback(self, pid, condition, command):
612
384
"""The checker has completed, so take appropriate actions."""
613
385
self.checker_callback_tag = None
614
386
self.checker = None
615
387
if os.WIFEXITED(condition):
616
self.last_checker_status = os.WEXITSTATUS(condition)
617
if self.last_checker_status == 0:
618
logger.info("Checker for %(name)s succeeded",
388
exitstatus = os.WEXITSTATUS(condition)
389
if exitstatus == 0:
390
logger.info(u"Checker for %(name)s succeeded",
619
391
vars(self))
620
392
self.checked_ok()
621
393
else:
622
logger.info("Checker for %(name)s failed",
394
logger.info(u"Checker for %(name)s failed",
623
395
vars(self))
624
396
else:
625
self.last_checker_status = -1
626
logger.warning("Checker for %(name)s crashed?",
397
logger.warning(u"Checker for %(name)s crashed?",
627
398
vars(self))
628
399
629
400
def checked_ok(self):
630
"""Assert that the client has been seen, alive and well."""
401
"""Bump up the timeout for this client.
402
403
This should only be called when the client has been seen,
404
alive and well.
405
"""
631
406
self.last_checked_ok = datetime.datetime.utcnow()
632
self.last_checker_status = 0
633
self.bump_timeout()
634
635
def bump_timeout(self, timeout=None):
636
"""Bump up the timeout for this client."""
637
if timeout is None:
638
timeout = self.timeout
639
if self.disable_initiator_tag is not None:
640
gobject.source_remove(self.disable_initiator_tag)
641
if getattr(self, "enabled", False):
642
self.disable_initiator_tag = (gobject.timeout_add
643
(timedelta_to_milliseconds
644
(timeout), self.disable))
645
self.expires = datetime.datetime.utcnow() + timeout
646
647
def need_approval(self):
648
self.last_approval_request = datetime.datetime.utcnow()
407
gobject.source_remove(self.disable_initiator_tag)
408
self.disable_initiator_tag = (gobject.timeout_add
409
(self.timeout_milliseconds(),
410
self.disable))
649
411
650
412
def start_checker(self):
651
413
"""Start a new checker subprocess if one is not running.
664
426
# If a checker exists, make sure it is not a zombie
665
427
try:
666
428
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
667
except (AttributeError, OSError) as error:
429
except (AttributeError, OSError), error:
668
430
if (isinstance(error, OSError)
669
431
and error.errno != errno.ECHILD):
670
432
raise error
671
433
else:
672
434
if pid:
673
logger.warning("Checker was a zombie")
435
logger.warning(u"Checker was a zombie")
674
436
gobject.source_remove(self.checker_callback_tag)
675
437
self.checker_callback(pid, status,
676
438
self.current_checker_command)
681
443
command = self.checker_command % self.host
682
444
except TypeError:
683
445
# Escape attributes for the shell
684
escaped_attrs = dict(
685
(attr,
686
re.escape(unicode(str(getattr(self, attr, "")),
687
errors=
688
'replace')))
689
for attr in
690
self.runtime_expansions)
691
446
escaped_attrs = dict((key,
447
re.escape(unicode(str(val),
448
errors=
449
u'replace')))
450
for key, val in
451
vars(self).iteritems())
692
452
try:
693
453
command = self.checker_command % escaped_attrs
694
except TypeError as error:
695
logger.error('Could not format string "%s":'
696
' %s', self.checker_command, error)
454
except TypeError, error:
455
logger.error(u'Could not format string "%s":'
456
u' %s', self.checker_command, error)
697
457
return True # Try again later
698
458
self.current_checker_command = command
699
459
try:
700
logger.info("Starting checker %r for %s",
460
logger.info(u"Starting checker %r for %s",
701
461
command, self.name)
702
462
# We don't need to redirect stdout and stderr, since
703
463
# in normal mode, that is already done by daemon(),
705
465
# always replaced by /dev/null.)
706
466
self.checker = subprocess.Popen(command,
707
467
close_fds=True,
708
shell=True, cwd="/")
468
shell=True, cwd=u"/")
709
469
self.checker_callback_tag = (gobject.child_watch_add
710
470
(self.checker.pid,
711
471
self.checker_callback,
716
476
if pid:
717
477
gobject.source_remove(self.checker_callback_tag)
718
478
self.checker_callback(pid, status, command)
719
except OSError as error:
720
logger.error("Failed to start subprocess: %s",
479
except OSError, error:
480
logger.error(u"Failed to start subprocess: %s",
721
481
error)
722
482
# Re-run this periodically if run by gobject.timeout_add
723
483
return True
727
487
if self.checker_callback_tag:
728
488
gobject.source_remove(self.checker_callback_tag)
729
489
self.checker_callback_tag = None
730
if getattr(self, "checker", None) is None:
490
if getattr(self, u"checker", None) is None:
731
491
return
732
logger.debug("Stopping checker for %(name)s", vars(self))
492
logger.debug(u"Stopping checker for %(name)s", vars(self))
733
493
try:
734
494
os.kill(self.checker.pid, signal.SIGTERM)
735
495
#time.sleep(0.5)
736
496
#if self.checker.poll() is None:
737
497
# os.kill(self.checker.pid, signal.SIGKILL)
738
except OSError as error:
498
except OSError, error:
739
499
if error.errno != errno.ESRCH: # No such process
740
500
raise
741
501
self.checker = None
742
502
743
503
744
def dbus_service_property(dbus_interface, signature="v",
745
access="readwrite", byte_arrays=False):
504
def dbus_service_property(dbus_interface, signature=u"v",
505
access=u"readwrite", byte_arrays=False):
746
506
"""Decorators for marking methods of a DBusObjectWithProperties to
747
507
become properties on the D-Bus.
748
508
755
515
"""
756
516
# Encoding deeply encoded byte arrays is not supported yet by the
757
517
# "Set" method, so we fail early here:
758
if byte_arrays and signature != "ay":
759
raise ValueError("Byte arrays not supported for non-'ay'"
760
" signature %r" % signature)
518
if byte_arrays and signature != u"ay":
519
raise ValueError(u"Byte arrays not supported for non-'ay'"
520
u" signature %r" % signature)
761
521
def decorator(func):
762
522
func._dbus_is_property = True
763
523
func._dbus_interface = dbus_interface
764
524
func._dbus_signature = signature
765
525
func._dbus_access = access
766
526
func._dbus_name = func.__name__
767
if func._dbus_name.endswith("_dbus_property"):
527
if func._dbus_name.endswith(u"_dbus_property"):
768
528
func._dbus_name = func._dbus_name[:-14]
769
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
529
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
770
530
return func
771
531
return decorator
772
532
792
552
793
553
class DBusObjectWithProperties(dbus.service.Object):
794
554
"""A D-Bus object with properties.
795
555
796
556
Classes inheriting from this can use the dbus_service_property
797
557
decorator to expose methods as D-Bus properties. It exposes the
798
558
standard Get(), Set(), and GetAll() methods on the D-Bus.
800
560
801
561
@staticmethod
802
562
def _is_dbus_property(obj):
803
return getattr(obj, "_dbus_is_property", False)
563
return getattr(obj, u"_dbus_is_property", False)
804
564
805
565
def _get_all_dbus_properties(self):
806
566
"""Returns a generator of (name, attribute) pairs
807
567
"""
808
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
809
for cls in self.__class__.__mro__
568
return ((prop._dbus_name, prop)
810
569
for name, prop in
811
inspect.getmembers(cls, self._is_dbus_property))
570
inspect.getmembers(self, self._is_dbus_property))
812
571
813
572
def _get_dbus_property(self, interface_name, property_name):
814
573
"""Returns a bound method if one exists which is a D-Bus
815
574
property with the specified name and interface.
816
575
"""
817
for cls in self.__class__.__mro__:
818
for name, value in (inspect.getmembers
819
(cls, self._is_dbus_property)):
820
if (value._dbus_name == property_name
821
and value._dbus_interface == interface_name):
822
return value.__get__(self)
823
576
for name in (property_name,
577
property_name + u"_dbus_property"):
578
prop = getattr(self, name, None)
579
if (prop is None
580
or not self._is_dbus_property(prop)
581
or prop._dbus_name != property_name
582
or (interface_name and prop._dbus_interface
583
and interface_name != prop._dbus_interface)):
584
continue
585
return prop
824
586
# No such property
825
raise DBusPropertyNotFound(self.dbus_object_path + ":"
826
+ interface_name + "."
587
raise DBusPropertyNotFound(self.dbus_object_path + u":"
588
+ interface_name + u"."
827
589
+ property_name)
828
590
829
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
830
out_signature="v")
591
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
592
out_signature=u"v")
831
593
def Get(self, interface_name, property_name):
832
594
"""Standard D-Bus property Get() method, see D-Bus standard.
833
595
"""
834
596
prop = self._get_dbus_property(interface_name, property_name)
835
if prop._dbus_access == "write":
597
if prop._dbus_access == u"write":
836
598
raise DBusPropertyAccessException(property_name)
837
599
value = prop()
838
if not hasattr(value, "variant_level"):
600
if not hasattr(value, u"variant_level"):
839
601
return value
840
602
return type(value)(value, variant_level=value.variant_level+1)
841
603
842
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
604
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
843
605
def Set(self, interface_name, property_name, value):
844
606
"""Standard D-Bus property Set() method, see D-Bus standard.
845
607
"""
846
608
prop = self._get_dbus_property(interface_name, property_name)
847
if prop._dbus_access == "read":
609
if prop._dbus_access == u"read":
848
610
raise DBusPropertyAccessException(property_name)
849
if prop._dbus_get_args_options["byte_arrays"]:
611
if prop._dbus_get_args_options[u"byte_arrays"]:
850
612
# The byte_arrays option is not supported yet on
851
613
# signatures other than "ay".
852
if prop._dbus_signature != "ay":
614
if prop._dbus_signature != u"ay":
853
615
raise ValueError
854
value = dbus.ByteArray(b''.join(chr(byte)
855
for byte in value))
616
value = dbus.ByteArray(''.join(unichr(byte)
617
for byte in value))
856
618
prop(value)
857
619
858
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
859
out_signature="a{sv}")
620
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
621
out_signature=u"a{sv}")
860
622
def GetAll(self, interface_name):
861
623
"""Standard D-Bus property GetAll() method, see D-Bus
862
624
standard.
863
625
864
626
Note: Will not include properties with access="write".
865
627
"""
866
properties = {}
628
all = {}
867
629
for name, prop in self._get_all_dbus_properties():
868
630
if (interface_name
869
631
and interface_name != prop._dbus_interface):
870
632
# Interface non-empty but did not match
871
633
continue
872
634
# Ignore write-only properties
873
if prop._dbus_access == "write":
635
if prop._dbus_access == u"write":
874
636
continue
875
637
value = prop()
876
if not hasattr(value, "variant_level"):
877
properties[name] = value
638
if not hasattr(value, u"variant_level"):
639
all[name] = value
878
640
continue
879
properties[name] = type(value)(value, variant_level=
880
value.variant_level+1)
881
return dbus.Dictionary(properties, signature="sv")
641
all[name] = type(value)(value, variant_level=
642
value.variant_level+1)
643
return dbus.Dictionary(all, signature=u"sv")
882
644
883
645
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
884
out_signature="s",
646
out_signature=u"s",
885
647
path_keyword='object_path',
886
648
connection_keyword='connection')
887
649
def Introspect(self, object_path, connection):
892
654
try:
893
655
document = xml.dom.minidom.parseString(xmlstring)
894
656
def make_tag(document, name, prop):
895
e = document.createElement("property")
896
e.setAttribute("name", name)
897
e.setAttribute("type", prop._dbus_signature)
898
e.setAttribute("access", prop._dbus_access)
657
e = document.createElement(u"property")
658
e.setAttribute(u"name", name)
659
e.setAttribute(u"type", prop._dbus_signature)
660
e.setAttribute(u"access", prop._dbus_access)
899
661
return e
900
for if_tag in document.getElementsByTagName("interface"):
662
for if_tag in document.getElementsByTagName(u"interface"):
901
663
for tag in (make_tag(document, name, prop)
902
664
for name, prop
903
665
in self._get_all_dbus_properties()
904
666
if prop._dbus_interface
905
== if_tag.getAttribute("name")):
667
== if_tag.getAttribute(u"name")):
906
668
if_tag.appendChild(tag)
907
669
# Add the names to the return values for the
908
670
# "org.freedesktop.DBus.Properties" methods
909
if (if_tag.getAttribute("name")
910
== "org.freedesktop.DBus.Properties"):
911
for cn in if_tag.getElementsByTagName("method"):
912
if cn.getAttribute("name") == "Get":
913
for arg in cn.getElementsByTagName("arg"):
914
if (arg.getAttribute("direction")
915
== "out"):
916
arg.setAttribute("name", "value")
917
elif cn.getAttribute("name") == "GetAll":
918
for arg in cn.getElementsByTagName("arg"):
919
if (arg.getAttribute("direction")
920
== "out"):
921
arg.setAttribute("name", "props")
922
xmlstring = document.toxml("utf-8")
671
if (if_tag.getAttribute(u"name")
672
== u"org.freedesktop.DBus.Properties"):
673
for cn in if_tag.getElementsByTagName(u"method"):
674
if cn.getAttribute(u"name") == u"Get":
675
for arg in cn.getElementsByTagName(u"arg"):
676
if (arg.getAttribute(u"direction")
677
== u"out"):
678
arg.setAttribute(u"name", u"value")
679
elif cn.getAttribute(u"name") == u"GetAll":
680
for arg in cn.getElementsByTagName(u"arg"):
681
if (arg.getAttribute(u"direction")
682
== u"out"):
683
arg.setAttribute(u"name", u"props")
684
xmlstring = document.toxml(u"utf-8")
923
685
document.unlink()
924
686
except (AttributeError, xml.dom.DOMException,
925
xml.parsers.expat.ExpatError) as error:
926
logger.error("Failed to override Introspection method",
687
xml.parsers.expat.ExpatError), error:
688
logger.error(u"Failed to override Introspection method",
927
689
error)
928
690
return xmlstring
929
691
930
692
931
def datetime_to_dbus (dt, variant_level=0):
932
"""Convert a UTC datetime.datetime() to a D-Bus type."""
933
if dt is None:
934
return dbus.String("", variant_level = variant_level)
935
return dbus.String(dt.isoformat(),
936
variant_level=variant_level)
937
938
939
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
940
.__metaclass__):
941
"""Applied to an empty subclass of a D-Bus object, this metaclass
942
will add additional D-Bus attributes matching a certain pattern.
943
"""
944
def __new__(mcs, name, bases, attr):
945
# Go through all the base classes which could have D-Bus
946
# methods, signals, or properties in them
947
for base in (b for b in bases
948
if issubclass(b, dbus.service.Object)):
949
# Go though all attributes of the base class
950
for attrname, attribute in inspect.getmembers(base):
951
# Ignore non-D-Bus attributes, and D-Bus attributes
952
# with the wrong interface name
953
if (not hasattr(attribute, "_dbus_interface")
954
or not attribute._dbus_interface
955
.startswith("se.recompile.Mandos")):
956
continue
957
# Create an alternate D-Bus interface name based on
958
# the current name
959
alt_interface = (attribute._dbus_interface
960
.replace("se.recompile.Mandos",
961
"se.bsnet.fukt.Mandos"))
962
# Is this a D-Bus signal?
963
if getattr(attribute, "_dbus_is_signal", False):
964
# Extract the original non-method function by
965
# black magic
966
nonmethod_func = (dict(
967
zip(attribute.func_code.co_freevars,
968
attribute.__closure__))["func"]
969
.cell_contents)
970
# Create a new, but exactly alike, function
971
# object, and decorate it to be a new D-Bus signal
972
# with the alternate D-Bus interface name
973
new_function = (dbus.service.signal
974
(alt_interface,
975
attribute._dbus_signature)
976
(types.FunctionType(
977
nonmethod_func.func_code,
978
nonmethod_func.func_globals,
979
nonmethod_func.func_name,
980
nonmethod_func.func_defaults,
981
nonmethod_func.func_closure)))
982
# Define a creator of a function to call both the
983
# old and new functions, so both the old and new
984
# signals gets sent when the function is called
985
def fixscope(func1, func2):
986
"""This function is a scope container to pass
987
func1 and func2 to the "call_both" function
988
outside of its arguments"""
989
def call_both(*args, **kwargs):
990
"""This function will emit two D-Bus
991
signals by calling func1 and func2"""
992
func1(*args, **kwargs)
993
func2(*args, **kwargs)
994
return call_both
995
# Create the "call_both" function and add it to
996
# the class
997
attr[attrname] = fixscope(attribute,
998
new_function)
999
# Is this a D-Bus method?
1000
elif getattr(attribute, "_dbus_is_method", False):
1001
# Create a new, but exactly alike, function
1002
# object. Decorate it to be a new D-Bus method
1003
# with the alternate D-Bus interface name. Add it
1004
# to the class.
1005
attr[attrname] = (dbus.service.method
1006
(alt_interface,
1007
attribute._dbus_in_signature,
1008
attribute._dbus_out_signature)
1009
(types.FunctionType
1010
(attribute.func_code,
1011
attribute.func_globals,
1012
attribute.func_name,
1013
attribute.func_defaults,
1014
attribute.func_closure)))
1015
# Is this a D-Bus property?
1016
elif getattr(attribute, "_dbus_is_property", False):
1017
# Create a new, but exactly alike, function
1018
# object, and decorate it to be a new D-Bus
1019
# property with the alternate D-Bus interface
1020
# name. Add it to the class.
1021
attr[attrname] = (dbus_service_property
1022
(alt_interface,
1023
attribute._dbus_signature,
1024
attribute._dbus_access,
1025
attribute
1026
._dbus_get_args_options
1027
["byte_arrays"])
1028
(types.FunctionType
1029
(attribute.func_code,
1030
attribute.func_globals,
1031
attribute.func_name,
1032
attribute.func_defaults,
1033
attribute.func_closure)))
1034
return type.__new__(mcs, name, bases, attr)
1035
1036
1037
693
class ClientDBus(Client, DBusObjectWithProperties):
1038
694
"""A Client class using D-Bus
1039
695
1041
697
dbus_object_path: dbus.ObjectPath
1042
698
bus: dbus.SystemBus()
1043
699
"""
1044
1045
runtime_expansions = (Client.runtime_expansions
1046
+ ("dbus_object_path",))
1047
1048
700
# dbus.service.Object doesn't use super(), so we can't either.
1049
701
1050
702
def __init__(self, bus = None, *args, **kwargs):
1052
704
Client.__init__(self, *args, **kwargs)
1053
705
# Only now, when this client is initialized, can it show up on
1054
706
# the D-Bus
1055
client_object_name = unicode(self.name).translate(
1056
{ord("."): ord("_"),
1057
ord("-"): ord("_")})
1058
707
self.dbus_object_path = (dbus.ObjectPath
1059
("/clients/" + client_object_name))
708
(u"/clients/"
709
+ self.name.replace(u".", u"_")))
1060
710
DBusObjectWithProperties.__init__(self, self.bus,
1061
711
self.dbus_object_path)
1062
1063
def notifychangeproperty(transform_func,
1064
dbus_name, type_func=lambda x: x,
1065
variant_level=1):
1066
""" Modify a variable so that it's a property which announces
1067
its changes to DBus.
1068
1069
transform_fun: Function that takes a value and a variant_level
1070
and transforms it to a D-Bus type.
1071
dbus_name: D-Bus name of the variable
1072
type_func: Function that transform the value before sending it
1073
to the D-Bus. Default: no transform
1074
variant_level: D-Bus variant level. Default: 1
1075
"""
1076
attrname = "_{0}".format(dbus_name)
1077
def setter(self, value):
1078
if hasattr(self, "dbus_object_path"):
1079
if (not hasattr(self, attrname) or
1080
type_func(getattr(self, attrname, None))
1081
!= type_func(value)):
1082
dbus_value = transform_func(type_func(value),
1083
variant_level
1084
=variant_level)
1085
self.PropertyChanged(dbus.String(dbus_name),
1086
dbus_value)
1087
setattr(self, attrname, value)
1088
1089
return property(lambda self: getattr(self, attrname), setter)
1090
1091
1092
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1093
approvals_pending = notifychangeproperty(dbus.Boolean,
1094
"ApprovalPending",
1095
type_func = bool)
1096
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1097
last_enabled = notifychangeproperty(datetime_to_dbus,
1098
"LastEnabled")
1099
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1100
type_func = lambda checker:
1101
checker is not None)
1102
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1103
"LastCheckedOK")
1104
last_checker_status = notifychangeproperty(dbus.Int16,
1105
"LastCheckerStatus")
1106
last_approval_request = notifychangeproperty(
1107
datetime_to_dbus, "LastApprovalRequest")
1108
approved_by_default = notifychangeproperty(dbus.Boolean,
1109
"ApprovedByDefault")
1110
approval_delay = notifychangeproperty(dbus.UInt64,
1111
"ApprovalDelay",
1112
type_func =
1113
timedelta_to_milliseconds)
1114
approval_duration = notifychangeproperty(
1115
dbus.UInt64, "ApprovalDuration",
1116
type_func = timedelta_to_milliseconds)
1117
host = notifychangeproperty(dbus.String, "Host")
1118
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1119
type_func =
1120
timedelta_to_milliseconds)
1121
extended_timeout = notifychangeproperty(
1122
dbus.UInt64, "ExtendedTimeout",
1123
type_func = timedelta_to_milliseconds)
1124
interval = notifychangeproperty(dbus.UInt64,
1125
"Interval",
1126
type_func =
1127
timedelta_to_milliseconds)
1128
checker_command = notifychangeproperty(dbus.String, "Checker")
1129
1130
del notifychangeproperty
712
713
@staticmethod
714
def _datetime_to_dbus(dt, variant_level=0):
715
"""Convert a UTC datetime.datetime() to a D-Bus type."""
716
return dbus.String(dt.isoformat(),
717
variant_level=variant_level)
718
719
def enable(self):
720
oldstate = getattr(self, u"enabled", False)
721
r = Client.enable(self)
722
if oldstate != self.enabled:
723
# Emit D-Bus signals
724
self.PropertyChanged(dbus.String(u"enabled"),
725
dbus.Boolean(True, variant_level=1))
726
self.PropertyChanged(
727
dbus.String(u"last_enabled"),
728
self._datetime_to_dbus(self.last_enabled,
729
variant_level=1))
730
return r
731
732
def disable(self, quiet = False):
733
oldstate = getattr(self, u"enabled", False)
734
r = Client.disable(self, quiet=quiet)
735
if not quiet and oldstate != self.enabled:
736
# Emit D-Bus signal
737
self.PropertyChanged(dbus.String(u"enabled"),
738
dbus.Boolean(False, variant_level=1))
739
return r
1131
740
1132
741
def __del__(self, *args, **kwargs):
1133
742
try:
1134
743
self.remove_from_connection()
1135
744
except LookupError:
1136
745
pass
1137
if hasattr(DBusObjectWithProperties, "__del__"):
746
if hasattr(DBusObjectWithProperties, u"__del__"):
1138
747
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1139
748
Client.__del__(self, *args, **kwargs)
1140
749
1142
751
*args, **kwargs):
1143
752
self.checker_callback_tag = None
1144
753
self.checker = None
754
# Emit D-Bus signal
755
self.PropertyChanged(dbus.String(u"checker_running"),
756
dbus.Boolean(False, variant_level=1))
1145
757
if os.WIFEXITED(condition):
1146
758
exitstatus = os.WEXITSTATUS(condition)
1147
759
# Emit D-Bus signal
1157
769
return Client.checker_callback(self, pid, condition, command,
1158
770
*args, **kwargs)
1159
771
772
def checked_ok(self, *args, **kwargs):
773
r = Client.checked_ok(self, *args, **kwargs)
774
# Emit D-Bus signal
775
self.PropertyChanged(
776
dbus.String(u"last_checked_ok"),
777
(self._datetime_to_dbus(self.last_checked_ok,
778
variant_level=1)))
779
return r
780
1160
781
def start_checker(self, *args, **kwargs):
1161
782
old_checker = self.checker
1162
783
if self.checker is not None:
1169
790
and old_checker_pid != self.checker.pid):
1170
791
# Emit D-Bus signal
1171
792
self.CheckerStarted(self.current_checker_command)
1172
return r
1173
1174
def _reset_approved(self):
1175
self.approved = None
1176
return False
1177
1178
def approve(self, value=True):
1179
self.send_changedstate()
1180
self.approved = value
1181
gobject.timeout_add(timedelta_to_milliseconds
1182
(self.approval_duration),
1183
self._reset_approved)
1184
793
self.PropertyChanged(
794
dbus.String(u"checker_running"),
795
dbus.Boolean(True, variant_level=1))
796
return r
797
798
def stop_checker(self, *args, **kwargs):
799
old_checker = getattr(self, u"checker", None)
800
r = Client.stop_checker(self, *args, **kwargs)
801
if (old_checker is not None
802
and getattr(self, u"checker", None) is None):
803
self.PropertyChanged(dbus.String(u"checker_running"),
804
dbus.Boolean(False, variant_level=1))
805
return r
1185
806
1186
807
## D-Bus methods, signals & properties
1187
_interface = "se.recompile.Mandos.Client"
808
_interface = u"se.bsnet.fukt.Mandos.Client"
1188
809
1189
810
## Signals
1190
811
1191
812
# CheckerCompleted - signal
1192
@dbus.service.signal(_interface, signature="nxs")
813
@dbus.service.signal(_interface, signature=u"nxs")
1193
814
def CheckerCompleted(self, exitcode, waitstatus, command):
1194
815
"D-Bus signal"
1195
816
pass
1196
817
1197
818
# CheckerStarted - signal
1198
@dbus.service.signal(_interface, signature="s")
819
@dbus.service.signal(_interface, signature=u"s")
1199
820
def CheckerStarted(self, command):
1200
821
"D-Bus signal"
1201
822
pass
1202
823
1203
824
# PropertyChanged - signal
1204
@dbus.service.signal(_interface, signature="sv")
825
@dbus.service.signal(_interface, signature=u"sv")
1205
826
def PropertyChanged(self, property, value):
1206
827
"D-Bus signal"
1207
828
pass
1209
830
# GotSecret - signal
1210
831
@dbus.service.signal(_interface)
1211
832
def GotSecret(self):
1212
"""D-Bus signal
1213
Is sent after a successful transfer of secret from the Mandos
1214
server to mandos-client
1215
"""
833
"D-Bus signal"
1216
834
pass
1217
835
1218
836
# Rejected - signal
1219
@dbus.service.signal(_interface, signature="s")
1220
def Rejected(self, reason):
837
@dbus.service.signal(_interface)
838
def Rejected(self):
1221
839
"D-Bus signal"
1222
840
pass
1223
841
1224
# NeedApproval - signal
1225
@dbus.service.signal(_interface, signature="tb")
1226
def NeedApproval(self, timeout, default):
1227
"D-Bus signal"
1228
return self.need_approval()
1229
1230
842
## Methods
1231
843
1232
# Approve - method
1233
@dbus.service.method(_interface, in_signature="b")
1234
def Approve(self, value):
1235
self.approve(value)
1236
1237
844
# CheckedOK - method
1238
845
@dbus.service.method(_interface)
1239
846
def CheckedOK(self):
1240
self.checked_ok()
847
return self.checked_ok()
1241
848
1242
849
# Enable - method
1243
850
@dbus.service.method(_interface)
1264
871
1265
872
## Properties
1266
873
1267
# ApprovalPending - property
1268
@dbus_service_property(_interface, signature="b", access="read")
1269
def ApprovalPending_dbus_property(self):
1270
return dbus.Boolean(bool(self.approvals_pending))
1271
1272
# ApprovedByDefault - property
1273
@dbus_service_property(_interface, signature="b",
1274
access="readwrite")
1275
def ApprovedByDefault_dbus_property(self, value=None):
1276
if value is None: # get
1277
return dbus.Boolean(self.approved_by_default)
1278
self.approved_by_default = bool(value)
1279
1280
# ApprovalDelay - property
1281
@dbus_service_property(_interface, signature="t",
1282
access="readwrite")
1283
def ApprovalDelay_dbus_property(self, value=None):
1284
if value is None: # get
1285
return dbus.UInt64(self.approval_delay_milliseconds())
1286
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1287
1288
# ApprovalDuration - property
1289
@dbus_service_property(_interface, signature="t",
1290
access="readwrite")
1291
def ApprovalDuration_dbus_property(self, value=None):
1292
if value is None: # get
1293
return dbus.UInt64(timedelta_to_milliseconds(
1294
self.approval_duration))
1295
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1296
1297
# Name - property
1298
@dbus_service_property(_interface, signature="s", access="read")
1299
def Name_dbus_property(self):
874
# name - property
875
@dbus_service_property(_interface, signature=u"s", access=u"read")
876
def name_dbus_property(self):
1300
877
return dbus.String(self.name)
1301
878
1302
# Fingerprint - property
1303
@dbus_service_property(_interface, signature="s", access="read")
1304
def Fingerprint_dbus_property(self):
879
# fingerprint - property
880
@dbus_service_property(_interface, signature=u"s", access=u"read")
881
def fingerprint_dbus_property(self):
1305
882
return dbus.String(self.fingerprint)
1306
883
1307
# Host - property
1308
@dbus_service_property(_interface, signature="s",
1309
access="readwrite")
1310
def Host_dbus_property(self, value=None):
884
# host - property
885
@dbus_service_property(_interface, signature=u"s",
886
access=u"readwrite")
887
def host_dbus_property(self, value=None):
1311
888
if value is None: # get
1312
889
return dbus.String(self.host)
1313
self.host = unicode(value)
1314
1315
# Created - property
1316
@dbus_service_property(_interface, signature="s", access="read")
1317
def Created_dbus_property(self):
1318
return datetime_to_dbus(self.created)
1319
1320
# LastEnabled - property
1321
@dbus_service_property(_interface, signature="s", access="read")
1322
def LastEnabled_dbus_property(self):
1323
return datetime_to_dbus(self.last_enabled)
1324
1325
# Enabled - property
1326
@dbus_service_property(_interface, signature="b",
1327
access="readwrite")
1328
def Enabled_dbus_property(self, value=None):
890
self.host = value
891
# Emit D-Bus signal
892
self.PropertyChanged(dbus.String(u"host"),
893
dbus.String(value, variant_level=1))
894
895
# created - property
896
@dbus_service_property(_interface, signature=u"s", access=u"read")
897
def created_dbus_property(self):
898
return dbus.String(self._datetime_to_dbus(self.created))
899
900
# last_enabled - property
901
@dbus_service_property(_interface, signature=u"s", access=u"read")
902
def last_enabled_dbus_property(self):
903
if self.last_enabled is None:
904
return dbus.String(u"")
905
return dbus.String(self._datetime_to_dbus(self.last_enabled))
906
907
# enabled - property
908
@dbus_service_property(_interface, signature=u"b",
909
access=u"readwrite")
910
def enabled_dbus_property(self, value=None):
1329
911
if value is None: # get
1330
912
return dbus.Boolean(self.enabled)
1331
913
if value:
1333
915
else:
1334
916
self.disable()
1335
917
1336
# LastCheckedOK - property
1337
@dbus_service_property(_interface, signature="s",
1338
access="readwrite")
1339
def LastCheckedOK_dbus_property(self, value=None):
918
# last_checked_ok - property
919
@dbus_service_property(_interface, signature=u"s",
920
access=u"readwrite")
921
def last_checked_ok_dbus_property(self, value=None):
1340
922
if value is not None:
1341
923
self.checked_ok()
1342
924
return
1343
return datetime_to_dbus(self.last_checked_ok)
1344
1345
# LastCheckerStatus - property
1346
@dbus_service_property(_interface, signature="n",
1347
access="read")
1348
def LastCheckerStatus_dbus_property(self):
1349
return dbus.Int16(self.last_checker_status)
1350
1351
# Expires - property
1352
@dbus_service_property(_interface, signature="s", access="read")
1353
def Expires_dbus_property(self):
1354
return datetime_to_dbus(self.expires)
1355
1356
# LastApprovalRequest - property
1357
@dbus_service_property(_interface, signature="s", access="read")
1358
def LastApprovalRequest_dbus_property(self):
1359
return datetime_to_dbus(self.last_approval_request)
1360
1361
# Timeout - property
1362
@dbus_service_property(_interface, signature="t",
1363
access="readwrite")
1364
def Timeout_dbus_property(self, value=None):
925
if self.last_checked_ok is None:
926
return dbus.String(u"")
927
return dbus.String(self._datetime_to_dbus(self
928
.last_checked_ok))
929
930
# timeout - property
931
@dbus_service_property(_interface, signature=u"t",
932
access=u"readwrite")
933
def timeout_dbus_property(self, value=None):
1365
934
if value is None: # get
1366
935
return dbus.UInt64(self.timeout_milliseconds())
1367
936
self.timeout = datetime.timedelta(0, 0, 0, value)
937
# Emit D-Bus signal
938
self.PropertyChanged(dbus.String(u"timeout"),
939
dbus.UInt64(value, variant_level=1))
940
if getattr(self, u"disable_initiator_tag", None) is None:
941
return
1368
942
# Reschedule timeout
1369
if self.enabled:
1370
now = datetime.datetime.utcnow()
1371
time_to_die = timedelta_to_milliseconds(
1372
(self.last_checked_ok + self.timeout) - now)
1373
if time_to_die <= 0:
1374
# The timeout has passed
1375
self.disable()
1376
else:
1377
self.expires = (now +
1378
datetime.timedelta(milliseconds =
1379
time_to_die))
1380
if (getattr(self, "disable_initiator_tag", None)
1381
is None):
1382
return
1383
gobject.source_remove(self.disable_initiator_tag)
1384
self.disable_initiator_tag = (gobject.timeout_add
1385
(time_to_die,
1386
self.disable))
1387
1388
# ExtendedTimeout - property
1389
@dbus_service_property(_interface, signature="t",
1390
access="readwrite")
1391
def ExtendedTimeout_dbus_property(self, value=None):
1392
if value is None: # get
1393
return dbus.UInt64(self.extended_timeout_milliseconds())
1394
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1395
1396
# Interval - property
1397
@dbus_service_property(_interface, signature="t",
1398
access="readwrite")
1399
def Interval_dbus_property(self, value=None):
943
gobject.source_remove(self.disable_initiator_tag)
944
self.disable_initiator_tag = None
945
time_to_die = (self.
946
_timedelta_to_milliseconds((self
947
.last_checked_ok
948
+ self.timeout)
949
- datetime.datetime
950
.utcnow()))
951
if time_to_die <= 0:
952
# The timeout has passed
953
self.disable()
954
else:
955
self.disable_initiator_tag = (gobject.timeout_add
956
(time_to_die, self.disable))
957
958
# interval - property
959
@dbus_service_property(_interface, signature=u"t",
960
access=u"readwrite")
961
def interval_dbus_property(self, value=None):
1400
962
if value is None: # get
1401
963
return dbus.UInt64(self.interval_milliseconds())
1402
964
self.interval = datetime.timedelta(0, 0, 0, value)
1403
if getattr(self, "checker_initiator_tag", None) is None:
965
# Emit D-Bus signal
966
self.PropertyChanged(dbus.String(u"interval"),
967
dbus.UInt64(value, variant_level=1))
968
if getattr(self, u"checker_initiator_tag", None) is None:
1404
969
return
1405
if self.enabled:
1406
# Reschedule checker run
1407
gobject.source_remove(self.checker_initiator_tag)
1408
self.checker_initiator_tag = (gobject.timeout_add
1409
(value, self.start_checker))
1410
self.start_checker() # Start one now, too
1411
1412
# Checker - property
1413
@dbus_service_property(_interface, signature="s",
1414
access="readwrite")
1415
def Checker_dbus_property(self, value=None):
970
# Reschedule checker run
971
gobject.source_remove(self.checker_initiator_tag)
972
self.checker_initiator_tag = (gobject.timeout_add
973
(value, self.start_checker))
974
self.start_checker() # Start one now, too
975
976
# checker - property
977
@dbus_service_property(_interface, signature=u"s",
978
access=u"readwrite")
979
def checker_dbus_property(self, value=None):
1416
980
if value is None: # get
1417
981
return dbus.String(self.checker_command)
1418
self.checker_command = unicode(value)
982
self.checker_command = value
983
# Emit D-Bus signal
984
self.PropertyChanged(dbus.String(u"checker"),
985
dbus.String(self.checker_command,
986
variant_level=1))
1419
987
1420
# CheckerRunning - property
1421
@dbus_service_property(_interface, signature="b",
1422
access="readwrite")
1423
def CheckerRunning_dbus_property(self, value=None):
988
# checker_running - property
989
@dbus_service_property(_interface, signature=u"b",
990
access=u"readwrite")
991
def checker_running_dbus_property(self, value=None):
1424
992
if value is None: # get
1425
993
return dbus.Boolean(self.checker is not None)
1426
994
if value:
1428
996
else:
1429
997
self.stop_checker()
1430
998
1431
# ObjectPath - property
1432
@dbus_service_property(_interface, signature="o", access="read")
1433
def ObjectPath_dbus_property(self):
999
# object_path - property
1000
@dbus_service_property(_interface, signature=u"o", access=u"read")
1001
def object_path_dbus_property(self):
1434
1002
return self.dbus_object_path # is already a dbus.ObjectPath
1435
1003
1436
# Secret = property
1437
@dbus_service_property(_interface, signature="ay",
1438
access="write", byte_arrays=True)
1439
def Secret_dbus_property(self, value):
1004
# secret = property
1005
@dbus_service_property(_interface, signature=u"ay",
1006
access=u"write", byte_arrays=True)
1007
def secret_dbus_property(self, value):
1440
1008
self.secret = str(value)
1441
1009
1442
1010
del _interface
1443
1011
1444
1012
1445
class ProxyClient(object):
1446
def __init__(self, child_pipe, fpr, address):
1447
self._pipe = child_pipe
1448
self._pipe.send(('init', fpr, address))
1449
if not self._pipe.recv():
1450
raise KeyError()
1451
1452
def __getattribute__(self, name):
1453
if name == '_pipe':
1454
return super(ProxyClient, self).__getattribute__(name)
1455
self._pipe.send(('getattr', name))
1456
data = self._pipe.recv()
1457
if data[0] == 'data':
1458
return data[1]
1459
if data[0] == 'function':
1460
def func(*args, **kwargs):
1461
self._pipe.send(('funcall', name, args, kwargs))
1462
return self._pipe.recv()[1]
1463
return func
1464
1465
def __setattr__(self, name, value):
1466
if name == '_pipe':
1467
return super(ProxyClient, self).__setattr__(name, value)
1468
self._pipe.send(('setattr', name, value))
1469
1470
1471
class ClientDBusTransitional(ClientDBus):
1472
__metaclass__ = AlternateDBusNamesMetaclass
1473
1474
1475
1013
class ClientHandler(socketserver.BaseRequestHandler, object):
1476
1014
"""A class to handle client connections.
1477
1015
1479
1017
Note: This will run in its own forked process."""
1480
1018
1481
1019
def handle(self):
1482
with contextlib.closing(self.server.child_pipe) as child_pipe:
1483
logger.info("TCP connection from: %s",
1484
unicode(self.client_address))
1485
logger.debug("Pipe FD: %d",
1486
self.server.child_pipe.fileno())
1487
1020
logger.info(u"TCP connection from: %s",
1021
unicode(self.client_address))
1022
logger.debug(u"IPC Pipe FD: %d",
1023
self.server.child_pipe[1].fileno())
1024
# Open IPC pipe to parent process
1025
with contextlib.nested(self.server.child_pipe[1],
1026
self.server.parent_pipe[0]
1027
) as (ipc, ipc_return):
1488
1028
session = (gnutls.connection
1489
1029
.ClientSession(self.request,
1490
1030
gnutls.connection
1491
1031
.X509Credentials()))
1492
1032
1033
line = self.request.makefile().readline()
1034
logger.debug(u"Protocol version: %r", line)
1035
try:
1036
if int(line.strip().split()[0]) > 1:
1037
raise RuntimeError
1038
except (ValueError, IndexError, RuntimeError), error:
1039
logger.error(u"Unknown protocol version: %s", error)
1040
return
1041
1493
1042
# Note: gnutls.connection.X509Credentials is really a
1494
1043
# generic GnuTLS certificate credentials object so long as
1495
1044
# no X.509 keys are added to it. Therefore, we can use it
1496
1045
# here despite using OpenPGP certificates.
1497
1046
1498
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1499
# "+AES-256-CBC", "+SHA1",
1500
# "+COMP-NULL", "+CTYPE-OPENPGP",
1501
# "+DHE-DSS"))
1047
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1048
# u"+AES-256-CBC", u"+SHA1",
1049
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1050
# u"+DHE-DSS"))
1502
1051
# Use a fallback default, since this MUST be set.
1503
1052
priority = self.server.gnutls_priority
1504
1053
if priority is None:
1505
priority = "NORMAL"
1054
priority = u"NORMAL"
1506
1055
(gnutls.library.functions
1507
1056
.gnutls_priority_set_direct(session._c_object,
1508
1057
priority, None))
1509
1058
1510
# Start communication using the Mandos protocol
1511
# Get protocol number
1512
line = self.request.makefile().readline()
1513
logger.debug("Protocol version: %r", line)
1514
try:
1515
if int(line.strip().split()[0]) > 1:
1516
raise RuntimeError
1517
except (ValueError, IndexError, RuntimeError) as error:
1518
logger.error("Unknown protocol version: %s", error)
1519
return
1520
1521
# Start GnuTLS connection
1522
1059
try:
1523
1060
session.handshake()
1524
except gnutls.errors.GNUTLSError as error:
1525
logger.warning("Handshake failed: %s", error)
1061
except gnutls.errors.GNUTLSError, error:
1062
logger.warning(u"Handshake failed: %s", error)
1526
1063
# Do not run session.bye() here: the session is not
1527
1064
# established. Just abandon the request.
1528
1065
return
1529
logger.debug("Handshake succeeded")
1530
1531
approval_required = False
1066
logger.debug(u"Handshake succeeded")
1532
1067
try:
1533
1068
try:
1534
1069
fpr = self.fingerprint(self.peer_certificate
1535
1070
(session))
1536
except (TypeError,
1537
gnutls.errors.GNUTLSError) as error:
1538
logger.warning("Bad certificate: %s", error)
1539
return
1540
logger.debug("Fingerprint: %s", fpr)
1541
1542
try:
1543
client = ProxyClient(child_pipe, fpr,
1544
self.client_address)
1545
except KeyError:
1546
return
1547
1548
if client.approval_delay:
1549
delay = client.approval_delay
1550
client.approvals_pending += 1
1551
approval_required = True
1552
1071
except (TypeError, gnutls.errors.GNUTLSError), error:
1072
logger.warning(u"Bad certificate: %s", error)
1073
return
1074
logger.debug(u"Fingerprint: %s", fpr)
1075
1076
for c in self.server.clients:
1077
if c.fingerprint == fpr:
1078
client = c
1079
break
1080
else:
1081
ipc.write(u"NOTFOUND %s %s\n"
1082
% (fpr, unicode(self.client_address)))
1083
return
1084
1085
class proxyclient(object):
1086
def __getattribute__(self, name):
1087
ipc.write(u"GETATTR %s %s\n" % name, client.fpr)
1088
return pickle.load(ipc_reply)
1089
p = proxyclient(client)
1090
1553
1091
while True:
1554
if not client.enabled:
1555
logger.info("Client %s is disabled",
1556
client.name)
1557
if self.server.use_dbus:
1558
# Emit D-Bus signal
1559
client.Rejected("Disabled")
1092
if not p.client.enabled:
1093
icp.write("DISABLED %s\n" % client.fpr)
1094
return
1095
if p.client.approved == False:
1096
icp.write("Disaproved")
1560
1097
return
1561
1098
1562
if client.approved or not client.approval_delay:
1563
#We are approved or approval is disabled
1099
if not p.client.secret:
1100
icp.write("No password")
1101
elif not p.client.approved:
1102
icp.write("Need approval"):
1103
else:
1104
#We have a password and are approved
1564
1105
break
1565
elif client.approved is None:
1566
logger.info("Client %s needs approval",
1567
client.name)
1568
if self.server.use_dbus:
1569
# Emit D-Bus signal
1570
client.NeedApproval(
1571
client.approval_delay_milliseconds(),
1572
client.approved_by_default)
1573
else:
1574
logger.warning("Client %s was not approved",
1575
client.name)
1576
if self.server.use_dbus:
1577
# Emit D-Bus signal
1578
client.Rejected("Denied")
1106
i, o, e = select(p.changesignal, (), (), client.delay)
1107
if not i:
1108
icp.write("Timeout passed")
1579
1109
return
1580
1110
1581
#wait until timeout or approved
1582
time = datetime.datetime.now()
1583
client.changedstate.acquire()
1584
(client.changedstate.wait
1585
(float(client.timedelta_to_milliseconds(delay)
1586
/ 1000)))
1587
client.changedstate.release()
1588
time2 = datetime.datetime.now()
1589
if (time2 - time) >= delay:
1590
if not client.approved_by_default:
1591
logger.warning("Client %s timed out while"
1592
" waiting for approval",
1593
client.name)
1594
if self.server.use_dbus:
1595
# Emit D-Bus signal
1596
client.Rejected("Approval timed out")
1597
return
1598
else:
1599
break
1600
else:
1601
delay -= time2 - time
1602
1111
ipc.write(u"SENDING %s\n" % client.name)
1603
1112
sent_size = 0
1604
1113
while sent_size < len(client.secret):
1605
try:
1606
sent = session.send(client.secret[sent_size:])
1607
except gnutls.errors.GNUTLSError as error:
1608
logger.warning("gnutls send failed")
1609
return
1610
logger.debug("Sent: %d, remaining: %d",
1114
sent = session.send(client.secret[sent_size:])
1115
logger.debug(u"Sent: %d, remaining: %d",
1611
1116
sent, len(client.secret)
1612
1117
- (sent_size + sent))
1613
1118
sent_size += sent
1614
1615
logger.info("Sending secret to %s", client.name)
1616
# bump the timeout using extended_timeout
1617
client.bump_timeout(client.extended_timeout)
1618
if self.server.use_dbus:
1619
# Emit D-Bus signal
1620
client.GotSecret()
1621
1622
1119
finally:
1623
if approval_required:
1624
client.approvals_pending -= 1
1625
try:
1626
session.bye()
1627
except gnutls.errors.GNUTLSError as error:
1628
logger.warning("GnuTLS bye failed")
1120
session.bye()
1629
1121
1630
1122
@staticmethod
1631
1123
def peer_certificate(session):
1641
1133
.gnutls_certificate_get_peers
1642
1134
(session._c_object, ctypes.byref(list_size)))
1643
1135
if not bool(cert_list) and list_size.value != 0:
1644
raise gnutls.errors.GNUTLSError("error getting peer"
1645
" certificate")
1136
raise gnutls.errors.GNUTLSError(u"error getting peer"
1137
u" certificate")
1646
1138
if list_size.value == 0:
1647
1139
return None
1648
1140
cert = cert_list[0]
1674
1166
if crtverify.value != 0:
1675
1167
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1676
1168
raise (gnutls.errors.CertificateSecurityError
1677
("Verify failed"))
1169
(u"Verify failed"))
1678
1170
# New buffer for the fingerprint
1679
1171
buf = ctypes.create_string_buffer(20)
1680
1172
buf_len = ctypes.c_size_t()
1687
1179
# Convert the buffer to a Python bytestring
1688
1180
fpr = ctypes.string_at(buf, buf_len.value)
1689
1181
# Convert the bytestring to hexadecimal notation
1690
hex_fpr = binascii.hexlify(fpr).upper()
1182
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1691
1183
return hex_fpr
1692
1184
1693
1185
1694
class MultiprocessingMixIn(object):
1695
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1696
def sub_process_main(self, request, address):
1697
try:
1698
self.finish_request(request, address)
1699
except Exception:
1700
self.handle_error(request, address)
1701
self.close_request(request)
1702
1703
def process_request(self, request, address):
1704
"""Start a new process to process the request."""
1705
proc = multiprocessing.Process(target = self.sub_process_main,
1706
args = (request,
1707
address))
1708
proc.start()
1709
return proc
1710
1711
1712
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1713
""" adds a pipe to the MixIn """
1186
class ForkingMixInWithPipes(socketserver.ForkingMixIn, object):
1187
"""Like socketserver.ForkingMixIn, but also pass a pipe pair."""
1714
1188
def process_request(self, request, client_address):
1715
1189
"""Overrides and wraps the original process_request().
1716
1190
1717
1191
This function creates a new pipe in self.pipe
1718
1192
"""
1719
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1720
1721
proc = MultiprocessingMixIn.process_request(self, request,
1722
client_address)
1723
self.child_pipe.close()
1724
self.add_pipe(parent_pipe, proc)
1725
1726
def add_pipe(self, parent_pipe, proc):
1193
# Child writes to child_pipe
1194
self.child_pipe = map(os.fdopen, os.pipe(), u"rw", (1, 0))
1195
# Parent writes to parent_pipe
1196
self.parent_pipe = map(os.fdopen, os.pipe(), u"rw", (1, 0))
1197
super(ForkingMixInWithPipes,
1198
self).process_request(request, client_address)
1199
# Close unused ends for parent
1200
self.parent_pipe[0].close() # close read end
1201
self.child_pipe[1].close() # close write end
1202
self.add_pipe_fds(self.child_pipe[0], self.parent_pipe[1])
1203
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
1727
1204
"""Dummy function; override as necessary"""
1728
raise NotImplementedError
1729
1730
1731
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1205
child_pipe_fd.close()
1206
parent_pipe_fd.close()
1207
1208
1209
class IPv6_TCPServer(ForkingMixInWithPipes,
1732
1210
socketserver.TCPServer, object):
1733
1211
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1734
1212
1750
1228
bind to an address or port if they were not specified."""
1751
1229
if self.interface is not None:
1752
1230
if SO_BINDTODEVICE is None:
1753
logger.error("SO_BINDTODEVICE does not exist;"
1754
" cannot bind to interface %s",
1231
logger.error(u"SO_BINDTODEVICE does not exist;"
1232
u" cannot bind to interface %s",
1755
1233
self.interface)
1756
1234
else:
1757
1235
try:
1758
1236
self.socket.setsockopt(socket.SOL_SOCKET,
1759
1237
SO_BINDTODEVICE,
1760
1238
str(self.interface
1761
+ '\0'))
1762
except socket.error as error:
1239
+ u'\0'))
1240
except socket.error, error:
1763
1241
if error[0] == errno.EPERM:
1764
logger.error("No permission to"
1765
" bind to interface %s",
1242
logger.error(u"No permission to"
1243
u" bind to interface %s",
1766
1244
self.interface)
1767
1245
elif error[0] == errno.ENOPROTOOPT:
1768
logger.error("SO_BINDTODEVICE not available;"
1769
" cannot bind to interface %s",
1246
logger.error(u"SO_BINDTODEVICE not available;"
1247
u" cannot bind to interface %s",
1770
1248
self.interface)
1771
1249
else:
1772
1250
raise
1774
1252
if self.server_address[0] or self.server_address[1]:
1775
1253
if not self.server_address[0]:
1776
1254
if self.address_family == socket.AF_INET6:
1777
any_address = "::" # in6addr_any
1255
any_address = u"::" # in6addr_any
1778
1256
else:
1779
1257
any_address = socket.INADDR_ANY
1780
1258
self.server_address = (any_address,
1807
1285
self.enabled = False
1808
1286
self.clients = clients
1809
1287
if self.clients is None:
1810
self.clients = {}
1288
self.clients = set()
1811
1289
self.use_dbus = use_dbus
1812
1290
self.gnutls_priority = gnutls_priority
1813
1291
IPv6_TCPServer.__init__(self, server_address,
1817
1295
def server_activate(self):
1818
1296
if self.enabled:
1819
1297
return socketserver.TCPServer.server_activate(self)
1820
1821
1298
def enable(self):
1822
1299
self.enabled = True
1823
1824
def add_pipe(self, parent_pipe, proc):
1300
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
1825
1301
# Call "handle_ipc" for both data and EOF events
1826
gobject.io_add_watch(parent_pipe.fileno(),
1302
gobject.io_add_watch(child_pipe_fd.fileno(),
1827
1303
gobject.IO_IN | gobject.IO_HUP,
1828
1304
functools.partial(self.handle_ipc,
1829
parent_pipe =
1830
parent_pipe,
1831
proc = proc))
1832
1833
def handle_ipc(self, source, condition, parent_pipe=None,
1834
proc = None, client_object=None):
1305
reply = parent_pipe_fd,
1306
sender= child_pipe_fd))
1307
def handle_ipc(self, source, condition, reply=None, sender=None):
1835
1308
condition_names = {
1836
gobject.IO_IN: "IN", # There is data to read.
1837
gobject.IO_OUT: "OUT", # Data can be written (without
1309
gobject.IO_IN: u"IN", # There is data to read.
1310
gobject.IO_OUT: u"OUT", # Data can be written (without
1838
1311
# blocking).
1839
gobject.IO_PRI: "PRI", # There is urgent data to read.
1840
gobject.IO_ERR: "ERR", # Error condition.
1841
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1312
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1313
gobject.IO_ERR: u"ERR", # Error condition.
1314
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1842
1315
# broken, usually for pipes and
1843
1316
# sockets).
1844
1317
}
1846
1319
for cond, name in
1847
1320
condition_names.iteritems()
1848
1321
if cond & condition)
1849
# error, or the other end of multiprocessing.Pipe has closed
1850
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1851
# Wait for other process to exit
1852
proc.join()
1853
return False
1854
1855
# Read a request from the child
1856
request = parent_pipe.recv()
1857
command = request[0]
1858
1859
if command == 'init':
1860
fpr = request[1]
1861
address = request[2]
1862
1863
for c in self.clients.itervalues():
1864
if c.fingerprint == fpr:
1865
client = c
1866
break
1867
else:
1868
logger.info("Client not found for fingerprint: %s, ad"
1869
"dress: %s", fpr, address)
1870
if self.use_dbus:
1871
# Emit D-Bus signal
1872
mandos_dbus_service.ClientNotFound(fpr,
1873
address[0])
1874
parent_pipe.send(False)
1875
return False
1876
1877
gobject.io_add_watch(parent_pipe.fileno(),
1878
gobject.IO_IN | gobject.IO_HUP,
1879
functools.partial(self.handle_ipc,
1880
parent_pipe =
1881
parent_pipe,
1882
proc = proc,
1883
client_object =
1884
client))
1885
parent_pipe.send(True)
1886
# remove the old hook in favor of the new above hook on
1887
# same fileno
1888
return False
1889
if command == 'funcall':
1890
funcname = request[1]
1891
args = request[2]
1892
kwargs = request[3]
1893
1894
parent_pipe.send(('data', getattr(client_object,
1895
funcname)(*args,
1896
**kwargs)))
1897
1898
if command == 'getattr':
1899
attrname = request[1]
1900
if callable(client_object.__getattribute__(attrname)):
1901
parent_pipe.send(('function',))
1902
else:
1903
parent_pipe.send(('data', client_object
1904
.__getattribute__(attrname)))
1905
1906
if command == 'setattr':
1907
attrname = request[1]
1908
value = request[2]
1909
setattr(client_object, attrname, value)
1910
1322
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1323
conditions_string)
1324
1325
# Read a line from the file object
1326
cmdline = sender.readline()
1327
if not cmdline: # Empty line means end of file
1328
# close the IPC pipes
1329
sender.close()
1330
reply.close()
1331
1332
# Stop calling this function
1333
return False
1334
1335
logger.debug(u"IPC command: %r", cmdline)
1336
1337
# Parse and act on command
1338
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1339
1340
if cmd == u"NOTFOUND":
1341
fpr, address = args.split(None, 1)
1342
logger.warning(u"Client not found for fingerprint: %s, ad"
1343
u"dress: %s", fpr, address)
1344
if self.use_dbus:
1345
# Emit D-Bus signal
1346
mandos_dbus_service.ClientNotFound(fpr, address)
1347
elif cmd == u"DISABLED":
1348
for client in self.clients:
1349
if client.name == args:
1350
logger.warning(u"Client %s is disabled", args)
1351
if self.use_dbus:
1352
# Emit D-Bus signal
1353
client.Rejected()
1354
break
1355
else:
1356
logger.error(u"Unknown client %s is disabled", args)
1357
elif cmd == u"SENDING":
1358
for client in self.clients:
1359
if client.name == args:
1360
logger.info(u"Sending secret to %s", client.name)
1361
client.checked_ok()
1362
if self.use_dbus:
1363
# Emit D-Bus signal
1364
client.GotSecret()
1365
break
1366
else:
1367
logger.error(u"Sending secret to unknown client %s",
1368
args)
1369
elif cmd == u"GETATTR":
1370
attr_name, fpr = args.split(None, 1)
1371
for client in self.clients:
1372
if client.fingerprint == fpr:
1373
attr_value = getattr(client, attr_name, None)
1374
logger.debug("IPC reply: %r", attr_value)
1375
pickle.dump(attr_value, reply)
1376
break
1377
else:
1378
logger.error(u"Client %s on address %s requesting "
1379
u"attribute %s not found", fpr, address,
1380
attr_name)
1381
pickle.dump(None, reply)
1382
else:
1383
logger.error(u"Unknown IPC command: %r", cmdline)
1384
1385
# Keep calling this function
1911
1386
return True
1912
1387
1913
1388
1914
1389
def string_to_delta(interval):
1915
1390
"""Parse a string and return a datetime.timedelta
1916
1391
1917
>>> string_to_delta('7d')
1392
>>> string_to_delta(u'7d')
1918
1393
datetime.timedelta(7)
1919
>>> string_to_delta('60s')
1394
>>> string_to_delta(u'60s')
1920
1395
datetime.timedelta(0, 60)
1921
>>> string_to_delta('60m')
1396
>>> string_to_delta(u'60m')
1922
1397
datetime.timedelta(0, 3600)
1923
>>> string_to_delta('24h')
1398
>>> string_to_delta(u'24h')
1924
1399
datetime.timedelta(1)
1925
>>> string_to_delta('1w')
1400
>>> string_to_delta(u'1w')
1926
1401
datetime.timedelta(7)
1927
>>> string_to_delta('5m 30s')
1402
>>> string_to_delta(u'5m 30s')
1928
1403
datetime.timedelta(0, 330)
1929
1404
"""
1930
1405
timevalue = datetime.timedelta(0)
1932
1407
try:
1933
1408
suffix = unicode(s[-1])
1934
1409
value = int(s[:-1])
1935
if suffix == "d":
1410
if suffix == u"d":
1936
1411
delta = datetime.timedelta(value)
1937
elif suffix == "s":
1412
elif suffix == u"s":
1938
1413
delta = datetime.timedelta(0, value)
1939
elif suffix == "m":
1414
elif suffix == u"m":
1940
1415
delta = datetime.timedelta(0, 0, 0, 0, value)
1941
elif suffix == "h":
1416
elif suffix == u"h":
1942
1417
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1943
elif suffix == "w":
1418
elif suffix == u"w":
1944
1419
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1945
1420
else:
1946
raise ValueError("Unknown suffix %r" % suffix)
1947
except (ValueError, IndexError) as e:
1948
raise ValueError(*(e.args))
1421
raise ValueError(u"Unknown suffix %r" % suffix)
1422
except (ValueError, IndexError), e:
1423
raise ValueError(e.message)
1949
1424
timevalue += delta
1950
1425
return timevalue
1951
1426
1952
1427
1428
def if_nametoindex(interface):
1429
"""Call the C function if_nametoindex(), or equivalent
1430
1431
Note: This function cannot accept a unicode string."""
1432
global if_nametoindex
1433
try:
1434
if_nametoindex = (ctypes.cdll.LoadLibrary
1435
(ctypes.util.find_library(u"c"))
1436
.if_nametoindex)
1437
except (OSError, AttributeError):
1438
logger.warning(u"Doing if_nametoindex the hard way")
1439
def if_nametoindex(interface):
1440
"Get an interface index the hard way, i.e. using fcntl()"
1441
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1442
with contextlib.closing(socket.socket()) as s:
1443
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1444
struct.pack(str(u"16s16x"),
1445
interface))
1446
interface_index = struct.unpack(str(u"I"),
1447
ifreq[16:20])[0]
1448
return interface_index
1449
return if_nametoindex(interface)
1450
1451
1953
1452
def daemon(nochdir = False, noclose = False):
1954
1453
"""See daemon(3). Standard BSD Unix function.
1955
1454
1958
1457
sys.exit()
1959
1458
os.setsid()
1960
1459
if not nochdir:
1961
os.chdir("/")
1460
os.chdir(u"/")
1962
1461
if os.fork():
1963
1462
sys.exit()
1964
1463
if not noclose:
1966
1465
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1967
1466
if not stat.S_ISCHR(os.fstat(null).st_mode):
1968
1467
raise OSError(errno.ENODEV,
1969
"%s not a character device"
1468
u"%s not a character device"
1970
1469
% os.path.devnull)
1971
1470
os.dup2(null, sys.stdin.fileno())
1972
1471
os.dup2(null, sys.stdout.fileno())
1980
1479
##################################################################
1981
1480
# Parsing of options, both command line and config file
1982
1481
1983
parser = argparse.ArgumentParser()
1984
parser.add_argument("-v", "--version", action="version",
1985
version = "%%(prog)s %s" % version,
1986
help="show version number and exit")
1987
parser.add_argument("-i", "--interface", metavar="IF",
1988
help="Bind to interface IF")
1989
parser.add_argument("-a", "--address",
1990
help="Address to listen for requests on")
1991
parser.add_argument("-p", "--port", type=int,
1992
help="Port number to receive requests on")
1993
parser.add_argument("--check", action="store_true",
1994
help="Run self-test")
1995
parser.add_argument("--debug", action="store_true",
1996
help="Debug mode; run in foreground and log"
1997
" to terminal")
1998
parser.add_argument("--debuglevel", metavar="LEVEL",
1999
help="Debug level for stdout output")
2000
parser.add_argument("--priority", help="GnuTLS"
2001
" priority string (see GnuTLS documentation)")
2002
parser.add_argument("--servicename",
2003
metavar="NAME", help="Zeroconf service name")
2004
parser.add_argument("--configdir",
2005
default="/etc/mandos", metavar="DIR",
2006
help="Directory to search for configuration"
2007
" files")
2008
parser.add_argument("--no-dbus", action="store_false",
2009
dest="use_dbus", help="Do not provide D-Bus"
2010
" system bus interface")
2011
parser.add_argument("--no-ipv6", action="store_false",
2012
dest="use_ipv6", help="Do not use IPv6")
2013
parser.add_argument("--no-restore", action="store_false",
2014
dest="restore", help="Do not restore stored"
2015
" state")
2016
parser.add_argument("--statedir", metavar="DIR",
2017
help="Directory to save/restore state in")
2018
2019
options = parser.parse_args()
1482
parser = optparse.OptionParser(version = "%%prog %s" % version)
1483
parser.add_option("-i", u"--interface", type=u"string",
1484
metavar="IF", help=u"Bind to interface IF")
1485
parser.add_option("-a", u"--address", type=u"string",
1486
help=u"Address to listen for requests on")
1487
parser.add_option("-p", u"--port", type=u"int",
1488
help=u"Port number to receive requests on")
1489
parser.add_option("--check", action=u"store_true",
1490
help=u"Run self-test")
1491
parser.add_option("--debug", action=u"store_true",
1492
help=u"Debug mode; run in foreground and log to"
1493
u" terminal")
1494
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1495
u" priority string (see GnuTLS documentation)")
1496
parser.add_option("--servicename", type=u"string",
1497
metavar=u"NAME", help=u"Zeroconf service name")
1498
parser.add_option("--configdir", type=u"string",
1499
default=u"/etc/mandos", metavar=u"DIR",
1500
help=u"Directory to search for configuration"
1501
u" files")
1502
parser.add_option("--no-dbus", action=u"store_false",
1503
dest=u"use_dbus", help=u"Do not provide D-Bus"
1504
u" system bus interface")
1505
parser.add_option("--no-ipv6", action=u"store_false",
1506
dest=u"use_ipv6", help=u"Do not use IPv6")
1507
options = parser.parse_args()[0]
2020
1508
2021
1509
if options.check:
2022
1510
import doctest
2024
1512
sys.exit()
2025
1513
2026
1514
# Default values for config file for server-global settings
2027
server_defaults = { "interface": "",
2028
"address": "",
2029
"port": "",
2030
"debug": "False",
2031
"priority":
2032
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2033
"servicename": "Mandos",
2034
"use_dbus": "True",
2035
"use_ipv6": "True",
2036
"debuglevel": "",
2037
"restore": "True",
2038
"statedir": "/var/lib/mandos"
1515
server_defaults = { u"interface": u"",
1516
u"address": u"",
1517
u"port": u"",
1518
u"debug": u"False",
1519
u"priority":
1520
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1521
u"servicename": u"Mandos",
1522
u"use_dbus": u"True",
1523
u"use_ipv6": u"True",
2039
1524
}
2040
1525
2041
1526
# Parse config file for server-global settings
2042
1527
server_config = configparser.SafeConfigParser(server_defaults)
2043
1528
del server_defaults
2044
1529
server_config.read(os.path.join(options.configdir,
2045
"mandos.conf"))
1530
u"mandos.conf"))
2046
1531
# Convert the SafeConfigParser object to a dict
2047
1532
server_settings = server_config.defaults()
2048
1533
# Use the appropriate methods on the non-string config options
2049
for option in ("debug", "use_dbus", "use_ipv6"):
2050
server_settings[option] = server_config.getboolean("DEFAULT",
1534
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1535
server_settings[option] = server_config.getboolean(u"DEFAULT",
2051
1536
option)
2052
1537
if server_settings["port"]:
2053
server_settings["port"] = server_config.getint("DEFAULT",
2054
"port")
1538
server_settings["port"] = server_config.getint(u"DEFAULT",
1539
u"port")
2055
1540
del server_config
2056
1541
2057
1542
# Override the settings from the config file with command line
2058
1543
# options, if set.
2059
for option in ("interface", "address", "port", "debug",
2060
"priority", "servicename", "configdir",
2061
"use_dbus", "use_ipv6", "debuglevel", "restore",
2062
"statedir"):
1544
for option in (u"interface", u"address", u"port", u"debug",
1545
u"priority", u"servicename", u"configdir",
1546
u"use_dbus", u"use_ipv6"):
2063
1547
value = getattr(options, option)
2064
1548
if value is not None:
2065
1549
server_settings[option] = value
2073
1557
##################################################################
2074
1558
2075
1559
# For convenience
2076
debug = server_settings["debug"]
2077
debuglevel = server_settings["debuglevel"]
2078
use_dbus = server_settings["use_dbus"]
2079
use_ipv6 = server_settings["use_ipv6"]
2080
stored_state_path = os.path.join(server_settings["statedir"],
2081
stored_state_file)
2082
2083
if debug:
2084
initlogger(debug, logging.DEBUG)
2085
else:
2086
if not debuglevel:
2087
initlogger(debug)
2088
else:
2089
level = getattr(logging, debuglevel.upper())
2090
initlogger(debug, level)
2091
2092
if server_settings["servicename"] != "Mandos":
1560
debug = server_settings[u"debug"]
1561
use_dbus = server_settings[u"use_dbus"]
1562
use_ipv6 = server_settings[u"use_ipv6"]
1563
1564
if not debug:
1565
syslogger.setLevel(logging.WARNING)
1566
console.setLevel(logging.WARNING)
1567
1568
if server_settings[u"servicename"] != u"Mandos":
2093
1569
syslogger.setFormatter(logging.Formatter
2094
('Mandos (%s) [%%(process)d]:'
2095
' %%(levelname)s: %%(message)s'
2096
% server_settings["servicename"]))
1570
(u'Mandos (%s) [%%(process)d]:'
1571
u' %%(levelname)s: %%(message)s'
1572
% server_settings[u"servicename"]))
2097
1573
2098
1574
# Parse config file with clients
2099
client_config = configparser.SafeConfigParser(Client
2100
.client_defaults)
2101
client_config.read(os.path.join(server_settings["configdir"],
2102
"clients.conf"))
1575
client_defaults = { u"timeout": u"1h",
1576
u"interval": u"5m",
1577
u"checker": u"fping -q -- %%(host)s",
1578
u"host": u"",
1579
}
1580
client_config = configparser.SafeConfigParser(client_defaults)
1581
client_config.read(os.path.join(server_settings[u"configdir"],
1582
u"clients.conf"))
2103
1583
2104
1584
global mandos_dbus_service
2105
1585
mandos_dbus_service = None
2106
1586
2107
tcp_server = MandosServer((server_settings["address"],
2108
server_settings["port"]),
1587
tcp_server = MandosServer((server_settings[u"address"],
1588
server_settings[u"port"]),
2109
1589
ClientHandler,
2110
interface=(server_settings["interface"]
2111
or None),
1590
interface=server_settings[u"interface"],
2112
1591
use_ipv6=use_ipv6,
2113
1592
gnutls_priority=
2114
server_settings["priority"],
1593
server_settings[u"priority"],
2115
1594
use_dbus=use_dbus)
2116
if not debug:
2117
pidfilename = "/var/run/mandos.pid"
2118
try:
2119
pidfile = open(pidfilename, "w")
2120
except IOError:
2121
logger.error("Could not open file %r", pidfilename)
1595
pidfilename = u"/var/run/mandos.pid"
1596
try:
1597
pidfile = open(pidfilename, u"w")
1598
except IOError:
1599
logger.error(u"Could not open file %r", pidfilename)
2122
1600
2123
1601
try:
2124
uid = pwd.getpwnam("_mandos").pw_uid
2125
gid = pwd.getpwnam("_mandos").pw_gid
1602
uid = pwd.getpwnam(u"_mandos").pw_uid
1603
gid = pwd.getpwnam(u"_mandos").pw_gid
2126
1604
except KeyError:
2127
1605
try:
2128
uid = pwd.getpwnam("mandos").pw_uid
2129
gid = pwd.getpwnam("mandos").pw_gid
1606
uid = pwd.getpwnam(u"mandos").pw_uid
1607
gid = pwd.getpwnam(u"mandos").pw_gid
2130
1608
except KeyError:
2131
1609
try:
2132
uid = pwd.getpwnam("nobody").pw_uid
2133
gid = pwd.getpwnam("nobody").pw_gid
1610
uid = pwd.getpwnam(u"nobody").pw_uid
1611
gid = pwd.getpwnam(u"nobody").pw_gid
2134
1612
except KeyError:
2135
1613
uid = 65534
2136
1614
gid = 65534
2137
1615
try:
2138
1616
os.setgid(gid)
2139
1617
os.setuid(uid)
2140
except OSError as error:
1618
except OSError, error:
2141
1619
if error[0] != errno.EPERM:
2142
1620
raise error
2143
1621
1622
# Enable all possible GnuTLS debugging
2144
1623
if debug:
2145
# Enable all possible GnuTLS debugging
2146
2147
1624
# "Use a log level over 10 to enable all debugging options."
2148
1625
# - GnuTLS manual
2149
1626
gnutls.library.functions.gnutls_global_set_log_level(11)
2150
1627
2151
1628
@gnutls.library.types.gnutls_log_func
2152
1629
def debug_gnutls(level, string):
2153
logger.debug("GnuTLS: %s", string[:-1])
1630
logger.debug(u"GnuTLS: %s", string[:-1])
2154
1631
2155
1632
(gnutls.library.functions
2156
1633
.gnutls_global_set_log_function(debug_gnutls))
2157
2158
# Redirect stdin so all checkers get /dev/null
2159
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2160
os.dup2(null, sys.stdin.fileno())
2161
if null > 2:
2162
os.close(null)
2163
2164
# Need to fork before connecting to D-Bus
2165
if not debug:
2166
# Close all input and output, do double fork, etc.
2167
daemon()
2168
2169
gobject.threads_init()
2170
1634
2171
1635
global main_loop
2172
1636
# From the Avahi example code
2176
1640
# End of Avahi example code
2177
1641
if use_dbus:
2178
1642
try:
2179
bus_name = dbus.service.BusName("se.recompile.Mandos",
1643
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2180
1644
bus, do_not_queue=True)
2181
old_bus_name = (dbus.service.BusName
2182
("se.bsnet.fukt.Mandos", bus,
2183
do_not_queue=True))
2184
except dbus.exceptions.NameExistsException as e:
2185
logger.error(unicode(e) + ", disabling D-Bus")
1645
except dbus.exceptions.NameExistsException, e:
1646
logger.error(unicode(e) + u", disabling D-Bus")
2186
1647
use_dbus = False
2187
server_settings["use_dbus"] = False
1648
server_settings[u"use_dbus"] = False
2188
1649
tcp_server.use_dbus = False
2189
1650
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2190
service = AvahiServiceToSyslog(name =
2191
server_settings["servicename"],
2192
servicetype = "_mandos._tcp",
2193
protocol = protocol, bus = bus)
1651
service = AvahiService(name = server_settings[u"servicename"],
1652
servicetype = u"_mandos._tcp",
1653
protocol = protocol, bus = bus)
2194
1654
if server_settings["interface"]:
2195
1655
service.interface = (if_nametoindex
2196
(str(server_settings["interface"])))
2197
2198
global multiprocessing_manager
2199
multiprocessing_manager = multiprocessing.Manager()
1656
(str(server_settings[u"interface"])))
2200
1657
2201
1658
client_class = Client
2202
1659
if use_dbus:
2203
client_class = functools.partial(ClientDBusTransitional,
2204
bus = bus)
2205
2206
client_settings = Client.config_parser(client_config)
2207
old_client_settings = {}
2208
clients_data = {}
2209
2210
# Get client data and settings from last running state.
2211
if server_settings["restore"]:
2212
try:
2213
with open(stored_state_path, "rb") as stored_state:
2214
clients_data, old_client_settings = (pickle.load
2215
(stored_state))
2216
os.remove(stored_state_path)
2217
except IOError as e:
2218
logger.warning("Could not load persistent state: {0}"
2219
.format(e))
2220
if e.errno != errno.ENOENT:
2221
raise
2222
except EOFError as e:
2223
logger.warning("Could not load persistent state: "
2224
"EOFError: {0}".format(e))
2225
2226
with PGPEngine() as pgp:
2227
for client_name, client in clients_data.iteritems():
2228
# Decide which value to use after restoring saved state.
2229
# We have three different values: Old config file,
2230
# new config file, and saved state.
2231
# New config value takes precedence if it differs from old
2232
# config value, otherwise use saved state.
2233
for name, value in client_settings[client_name].items():
2234
try:
2235
# For each value in new config, check if it
2236
# differs from the old config value (Except for
2237
# the "secret" attribute)
2238
if (name != "secret" and
2239
value != old_client_settings[client_name]
2240
[name]):
2241
client[name] = value
2242
except KeyError:
2243
pass
2244
2245
# Clients who has passed its expire date can still be
2246
# enabled if its last checker was successful. Clients
2247
# whose checker succeeded before we stored its state is
2248
# assumed to have successfully run all checkers during
2249
# downtime.
2250
if client["enabled"]:
2251
if datetime.datetime.utcnow() >= client["expires"]:
2252
if not client["last_checked_ok"]:
2253
logger.warning(
2254
"disabling client {0} - Client never "
2255
"performed a successful checker"
2256
.format(client_name))
2257
client["enabled"] = False
2258
elif client["last_checker_status"] != 0:
2259
logger.warning(
2260
"disabling client {0} - Client "
2261
"last checker failed with error code {1}"
2262
.format(client_name,
2263
client["last_checker_status"]))
2264
client["enabled"] = False
2265
else:
2266
client["expires"] = (datetime.datetime
2267
.utcnow()
2268
+ client["timeout"])
2269
logger.debug("Last checker succeeded,"
2270
" keeping {0} enabled"
2271
.format(client_name))
2272
try:
2273
client["secret"] = (
2274
pgp.decrypt(client["encrypted_secret"],
2275
client_settings[client_name]
2276
["secret"]))
2277
except PGPError:
2278
# If decryption fails, we use secret from new settings
2279
logger.debug("Failed to decrypt {0} old secret"
2280
.format(client_name))
2281
client["secret"] = (
2282
client_settings[client_name]["secret"])
2283
2284
2285
# Add/remove clients based on new changes made to config
2286
for client_name in (set(old_client_settings)
2287
- set(client_settings)):
2288
del clients_data[client_name]
2289
for client_name in (set(client_settings)
2290
- set(old_client_settings)):
2291
clients_data[client_name] = client_settings[client_name]
2292
2293
# Create all client objects
2294
for client_name, client in clients_data.iteritems():
2295
tcp_server.clients[client_name] = client_class(
2296
name = client_name, settings = client)
2297
1660
client_class = functools.partial(ClientDBus, bus = bus)
1661
tcp_server.clients.update(set(
1662
client_class(name = section,
1663
config= dict(client_config.items(section)))
1664
for section in client_config.sections()))
2298
1665
if not tcp_server.clients:
2299
logger.warning("No clients defined")
2300
1666
logger.warning(u"No clients defined")
1667
1668
if debug:
1669
# Redirect stdin so all checkers get /dev/null
1670
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1671
os.dup2(null, sys.stdin.fileno())
1672
if null > 2:
1673
os.close(null)
1674
else:
1675
# No console logging
1676
logger.removeHandler(console)
1677
# Close all input and output, do double fork, etc.
1678
daemon()
1679
1680
try:
1681
with pidfile:
1682
pid = os.getpid()
1683
pidfile.write(str(pid) + "\n")
1684
del pidfile
1685
except IOError:
1686
logger.error(u"Could not write to file %r with PID %d",
1687
pidfilename, pid)
1688
except NameError:
1689
# "pidfile" was never created
1690
pass
1691
del pidfilename
1692
2301
1693
if not debug:
2302
try:
2303
with pidfile:
2304
pid = os.getpid()
2305
pidfile.write(str(pid) + "\n".encode("utf-8"))
2306
del pidfile
2307
except IOError:
2308
logger.error("Could not write to file %r with PID %d",
2309
pidfilename, pid)
2310
except NameError:
2311
# "pidfile" was never created
2312
pass
2313
del pidfilename
2314
1694
signal.signal(signal.SIGINT, signal.SIG_IGN)
2315
2316
1695
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2317
1696
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2318
1697
2320
1699
class MandosDBusService(dbus.service.Object):
2321
1700
"""A D-Bus proxy object"""
2322
1701
def __init__(self):
2323
dbus.service.Object.__init__(self, bus, "/")
2324
_interface = "se.recompile.Mandos"
1702
dbus.service.Object.__init__(self, bus, u"/")
1703
_interface = u"se.bsnet.fukt.Mandos"
2325
1704
2326
@dbus.service.signal(_interface, signature="o")
1705
@dbus.service.signal(_interface, signature=u"o")
2327
1706
def ClientAdded(self, objpath):
2328
1707
"D-Bus signal"
2329
1708
pass
2330
1709
2331
@dbus.service.signal(_interface, signature="ss")
1710
@dbus.service.signal(_interface, signature=u"ss")
2332
1711
def ClientNotFound(self, fingerprint, address):
2333
1712
"D-Bus signal"
2334
1713
pass
2335
1714
2336
@dbus.service.signal(_interface, signature="os")
1715
@dbus.service.signal(_interface, signature=u"os")
2337
1716
def ClientRemoved(self, objpath, name):
2338
1717
"D-Bus signal"
2339
1718
pass
2340
1719
2341
@dbus.service.method(_interface, out_signature="ao")
1720
@dbus.service.method(_interface, out_signature=u"ao")
2342
1721
def GetAllClients(self):
2343
1722
"D-Bus method"
2344
1723
return dbus.Array(c.dbus_object_path
2345
for c in
2346
tcp_server.clients.itervalues())
1724
for c in tcp_server.clients)
2347
1725
2348
1726
@dbus.service.method(_interface,
2349
out_signature="a{oa{sv}}")
1727
out_signature=u"a{oa{sv}}")
2350
1728
def GetAllClientsWithProperties(self):
2351
1729
"D-Bus method"
2352
1730
return dbus.Dictionary(
2353
((c.dbus_object_path, c.GetAll(""))
2354
for c in tcp_server.clients.itervalues()),
2355
signature="oa{sv}")
1731
((c.dbus_object_path, c.GetAll(u""))
1732
for c in tcp_server.clients),
1733
signature=u"oa{sv}")
2356
1734
2357
@dbus.service.method(_interface, in_signature="o")
1735
@dbus.service.method(_interface, in_signature=u"o")
2358
1736
def RemoveClient(self, object_path):
2359
1737
"D-Bus method"
2360
for c in tcp_server.clients.itervalues():
1738
for c in tcp_server.clients:
2361
1739
if c.dbus_object_path == object_path:
2362
del tcp_server.clients[c.name]
1740
tcp_server.clients.remove(c)
2363
1741
c.remove_from_connection()
2364
1742
# Don't signal anything except ClientRemoved
2365
1743
c.disable(quiet=True)
2370
1748
2371
1749
del _interface
2372
1750
2373
class MandosDBusServiceTransitional(MandosDBusService):
2374
__metaclass__ = AlternateDBusNamesMetaclass
2375
mandos_dbus_service = MandosDBusServiceTransitional()
1751
mandos_dbus_service = MandosDBusService()
2376
1752
2377
1753
def cleanup():
2378
1754
"Cleanup function; run on exit"
2379
1755
service.cleanup()
2380
1756
2381
multiprocessing.active_children()
2382
if not (tcp_server.clients or client_settings):
2383
return
2384
2385
# Store client before exiting. Secrets are encrypted with key
2386
# based on what config file has. If config file is
2387
# removed/edited, old secret will thus be unrecovable.
2388
clients = {}
2389
with PGPEngine() as pgp:
2390
for client in tcp_server.clients.itervalues():
2391
key = client_settings[client.name]["secret"]
2392
client.encrypted_secret = pgp.encrypt(client.secret,
2393
key)
2394
client_dict = {}
2395
2396
# A list of attributes that can not be pickled
2397
# + secret.
2398
exclude = set(("bus", "changedstate", "secret",
2399
"checker"))
2400
for name, typ in (inspect.getmembers
2401
(dbus.service.Object)):
2402
exclude.add(name)
2403
2404
client_dict["encrypted_secret"] = (client
2405
.encrypted_secret)
2406
for attr in client.client_structure:
2407
if attr not in exclude:
2408
client_dict[attr] = getattr(client, attr)
2409
2410
clients[client.name] = client_dict
2411
del client_settings[client.name]["secret"]
2412
2413
try:
2414
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2415
prefix="clients-",
2416
dir=os.path.dirname
2417
(stored_state_path))
2418
with os.fdopen(tempfd, "wb") as stored_state:
2419
pickle.dump((clients, client_settings), stored_state)
2420
os.rename(tempname, stored_state_path)
2421
except (IOError, OSError) as e:
2422
logger.warning("Could not save persistent state: {0}"
2423
.format(e))
2424
if not debug:
2425
try:
2426
os.remove(tempname)
2427
except NameError:
2428
pass
2429
if e.errno not in set((errno.ENOENT, errno.EACCES,
2430
errno.EEXIST)):
2431
raise e
2432
2433
# Delete all clients, and settings from config
2434
1757
while tcp_server.clients:
2435
name, client = tcp_server.clients.popitem()
1758
client = tcp_server.clients.pop()
2436
1759
if use_dbus:
2437
1760
client.remove_from_connection()
1761
client.disable_hook = None
2438
1762
# Don't signal anything except ClientRemoved
2439
1763
client.disable(quiet=True)
2440
1764
if use_dbus:
2441
1765
# Emit D-Bus signal
2442
mandos_dbus_service.ClientRemoved(client
2443
.dbus_object_path,
1766
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2444
1767
client.name)
2445
client_settings.clear()
2446
1768
2447
1769
atexit.register(cleanup)
2448
1770
2449
for client in tcp_server.clients.itervalues():
1771
for client in tcp_server.clients:
2450
1772
if use_dbus:
2451
1773
# Emit D-Bus signal
2452
1774
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2453
# Need to initiate checking of clients
2454
if client.enabled:
2455
client.init_checker()
1775
client.enable()
2456
1776
2457
1777
tcp_server.enable()
2458
1778
tcp_server.server_activate()
2460
1780
# Find out what port we got
2461
1781
service.port = tcp_server.socket.getsockname()[1]
2462
1782
if use_ipv6:
2463
logger.info("Now listening on address %r, port %d,"
1783
logger.info(u"Now listening on address %r, port %d,"
2464
1784
" flowinfo %d, scope_id %d"
2465
1785
% tcp_server.socket.getsockname())
2466
1786
else: # IPv4
2467
logger.info("Now listening on address %r, port %d"
1787
logger.info(u"Now listening on address %r, port %d"
2468
1788
% tcp_server.socket.getsockname())
2469
1789
2470
1790
#service.interface = tcp_server.socket.getsockname()[3]
2473
1793
# From the Avahi example code
2474
1794
try:
2475
1795
service.activate()
2476
except dbus.exceptions.DBusException as error:
2477
logger.critical("DBusException: %s", error)
1796
except dbus.exceptions.DBusException, error:
1797
logger.critical(u"DBusException: %s", error)
2478
1798
cleanup()
2479
1799
sys.exit(1)
2480
1800
# End of Avahi example code
2484
1804
(tcp_server.handle_request
2485
1805
(*args[2:], **kwargs) or True))
2486
1806
2487
logger.debug("Starting main loop")
1807
logger.debug(u"Starting main loop")
2488
1808
main_loop.run()
2489
except AvahiError as error:
2490
logger.critical("AvahiError: %s", error)
1809
except AvahiError, error:
1810
logger.critical(u"AvahiError: %s", error)
2491
1811
cleanup()
2492
1812
sys.exit(1)
2493
1813
except KeyboardInterrupt:
2494
1814
if debug:
2495
print("", file=sys.stderr)
2496
logger.debug("Server received KeyboardInterrupt")
2497
logger.debug("Server exiting")
1815
print >> sys.stderr
1816
logger.debug(u"Server received KeyboardInterrupt")
1817
logger.debug(u"Server exiting")
2498
1818
# Must run before the D-Bus bus name gets deregistered
2499
1819
cleanup()
2500
1820
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0