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- Committer: Teddy Hogeborn
- Date: 2009-09-21 21:39:25 UTC
- Revision ID: teddy@fukt.bsnet.se-20090921213925-jbpt6tzu99otseng
Use D-Bus properties instead of our own methods.
* mandos (Client._datetime_to_milliseconds): Renamed to
"_timedelta_to_milliseconds".
All callers changed.
(dbus_service_property): New decorator for D-Bus properties.
(DBusPropertyException, DBusPropertyAccessException,
DBusPropertyNotFound): New D-Bus exception classes.
(DBusObjectWithProperties): New; extends "dbus.service.Object" with
support for properties.
(ClientDBus): Inherit from, and call up to, "DBusObjectWithProperties".
(ClientDBus.CheckedOK, ClientDBus.GetAllProperties,
ClientDBus.SetChecker, ClientDBus.SetHost, ClientDBus.SetInterval,
ClientDBus.SetSecret, ClientDBus.SetTimeout, ClientDBus.Enable,
ClientDBus.StartChecker, ClientDBus.Disable,
ClientDBus.StopChecker): Removed, replaced with properties.
(ClientDBus.IsStillValid): Removed, superfluous.
(ClientDBus.name_dbus_property,
ClientDBus.fingerprint_dbus_property, ClientDBus.host_dbus_property,
ClientDBus.created_dbus_property,
ClientDBus.last_enabled_dbus_property,
ClientDBus.enabled_dbus_property,
ClientDBus.last_checked_ok_dbus_property,
ClientDBus.timeout_dbus_property, ClientDBus.interval_dbus_property,
ClientDBus.checker_dbus_property,
ClientDBus.checker_running_dbus_property,
ClientDBus.object_path_dbus_property,
ClientDBus.secret_dbus_property): New D-Bus properties.
* mandos (Client._datetime_to_milliseconds): Renamed to
"_timedelta_to_milliseconds".
All callers changed.
(dbus_service_property): New decorator for D-Bus properties.
(DBusPropertyException, DBusPropertyAccessException,
DBusPropertyNotFound): New D-Bus exception classes.
(DBusObjectWithProperties): New; extends "dbus.service.Object" with
support for properties.
(ClientDBus): Inherit from, and call up to, "DBusObjectWithProperties".
(ClientDBus.CheckedOK, ClientDBus.GetAllProperties,
ClientDBus.SetChecker, ClientDBus.SetHost, ClientDBus.SetInterval,
ClientDBus.SetSecret, ClientDBus.SetTimeout, ClientDBus.Enable,
ClientDBus.StartChecker, ClientDBus.Disable,
ClientDBus.StopChecker): Removed, replaced with properties.
(ClientDBus.IsStillValid): Removed, superfluous.
(ClientDBus.name_dbus_property,
ClientDBus.fingerprint_dbus_property, ClientDBus.host_dbus_property,
ClientDBus.created_dbus_property,
ClientDBus.last_enabled_dbus_property,
ClientDBus.enabled_dbus_property,
ClientDBus.last_checked_ok_dbus_property,
ClientDBus.timeout_dbus_property, ClientDBus.interval_dbus_property,
ClientDBus.checker_dbus_property,
ClientDBus.checker_running_dbus_property,
ClientDBus.object_path_dbus_property,
ClientDBus.secret_dbus_property): New D-Bus properties.
- 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
#
13
13
# Everything else is
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
14
# 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/>.
30
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#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
34
from __future__ import division, with_statement, absolute_import
36
35
37
36
import SocketServer as socketserver
38
37
import socket
39
import argparse
38
import optparse
40
39
import datetime
41
40
import errno
42
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import gnutls.crypto
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import logging
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import logging.handlers
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import pwd
59
import contextlib
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from contextlib import closing
60
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import struct
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import fcntl
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import functools
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import cPickle as pickle
64
import multiprocessing
65
import types
66
import binascii
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import tempfile
68
import itertools
69
62
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63
import dbus
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64
import dbus.service
76
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import ctypes.util
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import xml.dom.minidom
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71
import inspect
79
import GnuPGInterface
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72
81
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try:
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74
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
86
78
except ImportError:
87
79
SO_BINDTODEVICE = None
88
80
89
version = "1.5.3"
90
stored_state_file = "clients.pickle"
91
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logger = logging.getLogger()
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version = "1.0.12"
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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,
95
address = str("/dev/log")))
96
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try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
101
except (OSError, AttributeError):
102
def if_nametoindex(interface):
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"Get an interface index the hard way, i.e. using fcntl()"
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
with contextlib.closing(socket.socket()) as s:
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
111
return interface_index
112
113
114
def initlogger(debug, level=logging.WARNING):
115
"""init logger and add loglevel"""
116
117
syslogger.setFormatter(logging.Formatter
118
('Mandos [%(process)d]: %(levelname)s:'
119
' %(message)s'))
120
logger.addHandler(syslogger)
121
122
if debug:
123
console = logging.StreamHandler()
124
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
125
' [%(process)d]:'
126
' %(levelname)s:'
127
' %(message)s'))
128
logger.addHandler(console)
129
logger.setLevel(level)
130
131
132
class PGPError(Exception):
133
"""Exception if encryption/decryption fails"""
134
pass
135
136
137
class PGPEngine(object):
138
"""A simple class for OpenPGP symmetric encryption & decryption"""
139
def __init__(self):
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
142
self.gnupg = GnuPGInterface.GnuPG()
143
self.gnupg.options.meta_interactive = False
144
self.gnupg.options.homedir = self.tempdir
145
self.gnupg.options.extra_args.extend(['--force-mdc',
146
'--quiet',
147
'--no-use-agent'])
148
149
def __enter__(self):
150
return self
151
152
def __exit__ (self, exc_type, exc_value, traceback):
153
self._cleanup()
154
return False
155
156
def __del__(self):
157
self._cleanup()
158
159
def _cleanup(self):
160
if self.tempdir is not None:
161
# Delete contents of tempdir
162
for root, dirs, files in os.walk(self.tempdir,
163
topdown = False):
164
for filename in files:
165
os.remove(os.path.join(root, filename))
166
for dirname in dirs:
167
os.rmdir(os.path.join(root, dirname))
168
# Remove tempdir
169
os.rmdir(self.tempdir)
170
self.tempdir = None
171
172
def password_encode(self, password):
173
# Passphrase can not be empty and can not contain newlines or
174
# NUL bytes. So we prefix it and hex encode it.
175
return b"mandos" + binascii.hexlify(password)
176
177
def encrypt(self, data, password):
178
self.gnupg.passphrase = self.password_encode(password)
179
with open(os.devnull, "w") as devnull:
180
try:
181
proc = self.gnupg.run(['--symmetric'],
182
create_fhs=['stdin', 'stdout'],
183
attach_fhs={'stderr': devnull})
184
with contextlib.closing(proc.handles['stdin']) as f:
185
f.write(data)
186
with contextlib.closing(proc.handles['stdout']) as f:
187
ciphertext = f.read()
188
proc.wait()
189
except IOError as e:
190
raise PGPError(e)
191
self.gnupg.passphrase = None
192
return ciphertext
193
194
def decrypt(self, data, password):
195
self.gnupg.passphrase = self.password_encode(password)
196
with open(os.devnull, "w") as devnull:
197
try:
198
proc = self.gnupg.run(['--decrypt'],
199
create_fhs=['stdin', 'stdout'],
200
attach_fhs={'stderr': devnull})
201
with contextlib.closing(proc.handles['stdin']) as f:
202
f.write(data)
203
with contextlib.closing(proc.handles['stdout']) as f:
204
decrypted_plaintext = f.read()
205
proc.wait()
206
except IOError as e:
207
raise PGPError(e)
208
self.gnupg.passphrase = None
209
return decrypted_plaintext
210
211
87
address = "/dev/log"))
88
syslogger.setFormatter(logging.Formatter
89
(u'Mandos [%(process)d]: %(levelname)s:'
90
u' %(message)s'))
91
logger.addHandler(syslogger)
92
93
console = logging.StreamHandler()
94
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
95
u' %(levelname)s:'
96
u' %(message)s'))
97
logger.addHandler(console)
212
98
213
99
class AvahiError(Exception):
214
100
def __init__(self, value, *args, **kwargs):
230
116
Attributes:
231
117
interface: integer; avahi.IF_UNSPEC or an interface index.
232
118
Used to optionally bind to the specified interface.
233
name: string; Example: 'Mandos'
234
type: string; Example: '_mandos._tcp'.
119
name: string; Example: u'Mandos'
120
type: string; Example: u'_mandos._tcp'.
235
121
See <http://www.dns-sd.org/ServiceTypes.html>
236
122
port: integer; what port to announce
237
123
TXT: list of strings; TXT record for the service
246
132
"""
247
133
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
248
134
servicetype = None, port = None, TXT = None,
249
domain = "", host = "", max_renames = 32768,
135
domain = u"", host = u"", max_renames = 32768,
250
136
protocol = avahi.PROTO_UNSPEC, bus = None):
251
137
self.interface = interface
252
138
self.name = name
261
147
self.group = None # our entry group
262
148
self.server = None
263
149
self.bus = bus
264
self.entry_group_state_changed_match = None
265
150
def rename(self):
266
151
"""Derived from the Avahi example code"""
267
152
if self.rename_count >= self.max_renames:
268
logger.critical("No suitable Zeroconf service name found"
269
" after %i retries, exiting.",
153
logger.critical(u"No suitable Zeroconf service name found"
154
u" after %i retries, exiting.",
270
155
self.rename_count)
271
raise AvahiServiceError("Too many renames")
272
self.name = unicode(self.server
273
.GetAlternativeServiceName(self.name))
274
logger.info("Changing Zeroconf service name to %r ...",
275
self.name)
156
raise AvahiServiceError(u"Too many renames")
157
self.name = self.server.GetAlternativeServiceName(self.name)
158
logger.info(u"Changing Zeroconf service name to %r ...",
159
unicode(self.name))
160
syslogger.setFormatter(logging.Formatter
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
163
% self.name))
276
164
self.remove()
277
try:
278
self.add()
279
except dbus.exceptions.DBusException as error:
280
logger.critical("DBusException: %s", error)
281
self.cleanup()
282
os._exit(1)
165
self.add()
283
166
self.rename_count += 1
284
167
def remove(self):
285
168
"""Derived from the Avahi example code"""
286
if self.entry_group_state_changed_match is not None:
287
self.entry_group_state_changed_match.remove()
288
self.entry_group_state_changed_match = None
289
169
if self.group is not None:
290
170
self.group.Reset()
291
171
def add(self):
292
172
"""Derived from the Avahi example code"""
293
self.remove()
294
173
if self.group is None:
295
174
self.group = dbus.Interface(
296
175
self.bus.get_object(avahi.DBUS_NAME,
297
176
self.server.EntryGroupNew()),
298
177
avahi.DBUS_INTERFACE_ENTRY_GROUP)
299
self.entry_group_state_changed_match = (
300
self.group.connect_to_signal(
301
'StateChanged', self.entry_group_state_changed))
302
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
178
self.group.connect_to_signal('StateChanged',
179
self
180
.entry_group_state_changed)
181
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
303
182
self.name, self.type)
304
183
self.group.AddService(
305
184
self.interface,
312
191
self.group.Commit()
313
192
def entry_group_state_changed(self, state, error):
314
193
"""Derived from the Avahi example code"""
315
logger.debug("Avahi entry group state change: %i", state)
194
logger.debug(u"Avahi state change: %i", state)
316
195
317
196
if state == avahi.ENTRY_GROUP_ESTABLISHED:
318
logger.debug("Zeroconf service established.")
197
logger.debug(u"Zeroconf service established.")
319
198
elif state == avahi.ENTRY_GROUP_COLLISION:
320
logger.info("Zeroconf service name collision.")
199
logger.warning(u"Zeroconf service name collision.")
321
200
self.rename()
322
201
elif state == avahi.ENTRY_GROUP_FAILURE:
323
logger.critical("Avahi: Error in group state changed %s",
202
logger.critical(u"Avahi: Error in group state changed %s",
324
203
unicode(error))
325
raise AvahiGroupError("State changed: %s"
204
raise AvahiGroupError(u"State changed: %s"
326
205
% unicode(error))
327
206
def cleanup(self):
328
207
"""Derived from the Avahi example code"""
329
208
if self.group is not None:
330
try:
331
self.group.Free()
332
except (dbus.exceptions.UnknownMethodException,
333
dbus.exceptions.DBusException):
334
pass
209
self.group.Free()
335
210
self.group = None
336
self.remove()
337
def server_state_changed(self, state, error=None):
211
def server_state_changed(self, state):
338
212
"""Derived from the Avahi example code"""
339
logger.debug("Avahi server state change: %i", state)
340
bad_states = { avahi.SERVER_INVALID:
341
"Zeroconf server invalid",
342
avahi.SERVER_REGISTERING: None,
343
avahi.SERVER_COLLISION:
344
"Zeroconf server name collision",
345
avahi.SERVER_FAILURE:
346
"Zeroconf server failure" }
347
if state in bad_states:
348
if bad_states[state] is not None:
349
if error is None:
350
logger.error(bad_states[state])
351
else:
352
logger.error(bad_states[state] + ": %r", error)
353
self.cleanup()
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
215
self.remove()
354
216
elif state == avahi.SERVER_RUNNING:
355
217
self.add()
356
else:
357
if error is None:
358
logger.debug("Unknown state: %r", state)
359
else:
360
logger.debug("Unknown state: %r: %r", state, error)
361
218
def activate(self):
362
219
"""Derived from the Avahi example code"""
363
220
if self.server is None:
364
221
self.server = dbus.Interface(
365
222
self.bus.get_object(avahi.DBUS_NAME,
366
avahi.DBUS_PATH_SERVER,
367
follow_name_owner_changes=True),
223
avahi.DBUS_PATH_SERVER),
368
224
avahi.DBUS_INTERFACE_SERVER)
369
self.server.connect_to_signal("StateChanged",
225
self.server.connect_to_signal(u"StateChanged",
370
226
self.server_state_changed)
371
227
self.server_state_changed(self.server.GetState())
372
228
373
class AvahiServiceToSyslog(AvahiService):
374
def rename(self):
375
"""Add the new name to the syslog messages"""
376
ret = AvahiService.rename(self)
377
syslogger.setFormatter(logging.Formatter
378
('Mandos (%s) [%%(process)d]:'
379
' %%(levelname)s: %%(message)s'
380
% self.name))
381
return ret
382
229
383
def timedelta_to_milliseconds(td):
384
"Convert a datetime.timedelta() to milliseconds"
385
return ((td.days * 24 * 60 * 60 * 1000)
386
+ (td.seconds * 1000)
387
+ (td.microseconds // 1000))
388
389
230
class Client(object):
390
231
"""A representation of a client host served by this server.
391
232
392
233
Attributes:
393
approved: bool(); 'None' if not yet approved/disapproved
394
approval_delay: datetime.timedelta(); Time to wait for approval
395
approval_duration: datetime.timedelta(); Duration of one approval
234
name: string; from the config file, used in log messages and
235
D-Bus identifiers
236
fingerprint: string (40 or 32 hexadecimal digits); used to
237
uniquely identify the client
238
secret: bytestring; sent verbatim (over TLS) to client
239
host: string; available for use by the checker command
240
created: datetime.datetime(); (UTC) object creation
241
last_enabled: datetime.datetime(); (UTC)
242
enabled: bool()
243
last_checked_ok: datetime.datetime(); (UTC) or None
244
timeout: datetime.timedelta(); How long from last_checked_ok
245
until this client is invalid
246
interval: datetime.timedelta(); How often to start a new checker
247
disable_hook: If set, called by disable() as disable_hook(self)
396
248
checker: subprocess.Popen(); a running checker process used
397
249
to see if the client lives.
398
250
'None' if no process is running.
399
checker_callback_tag: a gobject event source tag, or None
400
checker_command: string; External command which is run to check
401
if client lives. %() expansions are done at
251
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
253
checker_callback_tag: - '' -
254
checker_command: string; External command which is run to check if
255
client lives. %() expansions are done at
402
256
runtime with vars(self) as dict, so that for
403
257
instance %(name)s can be used in the command.
404
checker_initiator_tag: a gobject event source tag, or None
405
created: datetime.datetime(); (UTC) object creation
406
client_structure: Object describing what attributes a client has
407
and is used for storing the client at exit
408
258
current_checker_command: string; current running checker_command
409
disable_initiator_tag: a gobject event source tag, or None
410
enabled: bool()
411
fingerprint: string (40 or 32 hexadecimal digits); used to
412
uniquely identify the client
413
host: string; available for use by the checker command
414
interval: datetime.timedelta(); How often to start a new checker
415
last_approval_request: datetime.datetime(); (UTC) or None
416
last_checked_ok: datetime.datetime(); (UTC) or None
417
last_checker_status: integer between 0 and 255 reflecting exit
418
status of last checker. -1 reflects crashed
419
checker, -2 means no checker completed yet.
420
last_enabled: datetime.datetime(); (UTC) or None
421
name: string; from the config file, used in log messages and
422
D-Bus identifiers
423
secret: bytestring; sent verbatim (over TLS) to client
424
timeout: datetime.timedelta(); How long from last_checked_ok
425
until this client is disabled
426
extended_timeout: extra long timeout when secret has been sent
427
runtime_expansions: Allowed attributes for runtime expansion.
428
expires: datetime.datetime(); time (UTC) when a client will be
429
disabled, or None
430
259
"""
431
260
432
runtime_expansions = ("approval_delay", "approval_duration",
433
"created", "enabled", "fingerprint",
434
"host", "interval", "last_checked_ok",
435
"last_enabled", "name", "timeout")
436
client_defaults = { "timeout": "5m",
437
"extended_timeout": "15m",
438
"interval": "2m",
439
"checker": "fping -q -- %%(host)s",
440
"host": "",
441
"approval_delay": "0s",
442
"approval_duration": "1s",
443
"approved_by_default": "True",
444
"enabled": "True",
445
}
261
@staticmethod
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
446
267
447
268
def timeout_milliseconds(self):
448
269
"Return the 'timeout' attribute in milliseconds"
449
return timedelta_to_milliseconds(self.timeout)
450
451
def extended_timeout_milliseconds(self):
452
"Return the 'extended_timeout' attribute in milliseconds"
453
return timedelta_to_milliseconds(self.extended_timeout)
270
return self._timedelta_to_milliseconds(self.timeout)
454
271
455
272
def interval_milliseconds(self):
456
273
"Return the 'interval' attribute in milliseconds"
457
return timedelta_to_milliseconds(self.interval)
274
return self._timedelta_to_milliseconds(self.interval)
458
275
459
def approval_delay_milliseconds(self):
460
return timedelta_to_milliseconds(self.approval_delay)
461
462
@staticmethod
463
def config_parser(config):
464
"""Construct a new dict of client settings of this form:
465
{ client_name: {setting_name: value, ...}, ...}
466
with exceptions for any special settings as defined above.
467
NOTE: Must be a pure function. Must return the same result
468
value given the same arguments.
469
"""
470
settings = {}
471
for client_name in config.sections():
472
section = dict(config.items(client_name))
473
client = settings[client_name] = {}
474
475
client["host"] = section["host"]
476
# Reformat values from string types to Python types
477
client["approved_by_default"] = config.getboolean(
478
client_name, "approved_by_default")
479
client["enabled"] = config.getboolean(client_name,
480
"enabled")
481
482
client["fingerprint"] = (section["fingerprint"].upper()
483
.replace(" ", ""))
484
if "secret" in section:
485
client["secret"] = section["secret"].decode("base64")
486
elif "secfile" in section:
487
with open(os.path.expanduser(os.path.expandvars
488
(section["secfile"])),
489
"rb") as secfile:
490
client["secret"] = secfile.read()
491
else:
492
raise TypeError("No secret or secfile for section %s"
493
% section)
494
client["timeout"] = string_to_delta(section["timeout"])
495
client["extended_timeout"] = string_to_delta(
496
section["extended_timeout"])
497
client["interval"] = string_to_delta(section["interval"])
498
client["approval_delay"] = string_to_delta(
499
section["approval_delay"])
500
client["approval_duration"] = string_to_delta(
501
section["approval_duration"])
502
client["checker_command"] = section["checker"]
503
client["last_approval_request"] = None
504
client["last_checked_ok"] = None
505
client["last_checker_status"] = -2
506
507
return settings
508
509
510
def __init__(self, settings, name = None):
276
def __init__(self, name = None, disable_hook=None, config=None):
511
277
"""Note: the 'checker' key in 'config' sets the
512
278
'checker_command' attribute and *not* the 'checker'
513
279
attribute."""
514
280
self.name = name
515
# adding all client settings
516
for setting, value in settings.iteritems():
517
setattr(self, setting, value)
518
519
if self.enabled:
520
if not hasattr(self, "last_enabled"):
521
self.last_enabled = datetime.datetime.utcnow()
522
if not hasattr(self, "expires"):
523
self.expires = (datetime.datetime.utcnow()
524
+ self.timeout)
525
else:
526
self.last_enabled = None
527
self.expires = None
528
529
logger.debug("Creating client %r", self.name)
281
if config is None:
282
config = {}
283
logger.debug(u"Creating client %r", self.name)
530
284
# Uppercase and remove spaces from fingerprint for later
531
285
# comparison purposes with return value from the fingerprint()
532
286
# function
533
logger.debug(" Fingerprint: %s", self.fingerprint)
534
self.created = settings.get("created",
535
datetime.datetime.utcnow())
536
537
# attributes specific for this server instance
287
self.fingerprint = (config[u"fingerprint"].upper()
288
.replace(u" ", u""))
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
294
(os.path.expandvars
295
(config[u"secfile"])))) as secfile:
296
self.secret = secfile.read()
297
else:
298
raise TypeError(u"No secret or secfile for client %s"
299
% self.name)
300
self.host = config.get(u"host", u"")
301
self.created = datetime.datetime.utcnow()
302
self.enabled = False
303
self.last_enabled = None
304
self.last_checked_ok = None
305
self.timeout = string_to_delta(config[u"timeout"])
306
self.interval = string_to_delta(config[u"interval"])
307
self.disable_hook = disable_hook
538
308
self.checker = None
539
309
self.checker_initiator_tag = None
540
310
self.disable_initiator_tag = None
541
311
self.checker_callback_tag = None
312
self.checker_command = config[u"checker"]
542
313
self.current_checker_command = None
543
self.approved = None
544
self.approvals_pending = 0
545
self.changedstate = (multiprocessing_manager
546
.Condition(multiprocessing_manager
547
.Lock()))
548
self.client_structure = [attr for attr in
549
self.__dict__.iterkeys()
550
if not attr.startswith("_")]
551
self.client_structure.append("client_structure")
552
553
for name, t in inspect.getmembers(type(self),
554
lambda obj:
555
isinstance(obj,
556
property)):
557
if not name.startswith("_"):
558
self.client_structure.append(name)
559
560
# Send notice to process children that client state has changed
561
def send_changedstate(self):
562
with self.changedstate:
563
self.changedstate.notify_all()
314
self.last_connect = None
564
315
565
316
def enable(self):
566
317
"""Start this client's checker and timeout hooks"""
567
if getattr(self, "enabled", False):
318
if getattr(self, u"enabled", False):
568
319
# Already enabled
569
320
return
570
self.send_changedstate()
571
self.expires = datetime.datetime.utcnow() + self.timeout
572
self.enabled = True
573
321
self.last_enabled = datetime.datetime.utcnow()
574
self.init_checker()
575
576
def disable(self, quiet=True):
577
"""Disable this client."""
578
if not getattr(self, "enabled", False):
579
return False
580
if not quiet:
581
self.send_changedstate()
582
if not quiet:
583
logger.info("Disabling client %s", self.name)
584
if getattr(self, "disable_initiator_tag", False):
585
gobject.source_remove(self.disable_initiator_tag)
586
self.disable_initiator_tag = None
587
self.expires = None
588
if getattr(self, "checker_initiator_tag", False):
589
gobject.source_remove(self.checker_initiator_tag)
590
self.checker_initiator_tag = None
591
self.stop_checker()
592
self.enabled = False
593
# Do not run this again if called by a gobject.timeout_add
594
return False
595
596
def __del__(self):
597
self.disable()
598
599
def init_checker(self):
600
322
# Schedule a new checker to be started an 'interval' from now,
601
323
# and every interval from then on.
602
324
self.checker_initiator_tag = (gobject.timeout_add
603
325
(self.interval_milliseconds(),
604
326
self.start_checker))
327
# Also start a new checker *right now*.
328
self.start_checker()
605
329
# Schedule a disable() when 'timeout' has passed
606
330
self.disable_initiator_tag = (gobject.timeout_add
607
331
(self.timeout_milliseconds(),
608
332
self.disable))
609
# Also start a new checker *right now*.
610
self.start_checker()
333
self.enabled = True
334
335
def disable(self):
336
"""Disable this client."""
337
if not getattr(self, "enabled", False):
338
return False
339
logger.info(u"Disabling client %s", self.name)
340
if getattr(self, u"disable_initiator_tag", False):
341
gobject.source_remove(self.disable_initiator_tag)
342
self.disable_initiator_tag = None
343
if getattr(self, u"checker_initiator_tag", False):
344
gobject.source_remove(self.checker_initiator_tag)
345
self.checker_initiator_tag = None
346
self.stop_checker()
347
if self.disable_hook:
348
self.disable_hook(self)
349
self.enabled = False
350
# Do not run this again if called by a gobject.timeout_add
351
return False
352
353
def __del__(self):
354
self.disable_hook = None
355
self.disable()
611
356
612
357
def checker_callback(self, pid, condition, command):
613
358
"""The checker has completed, so take appropriate actions."""
614
359
self.checker_callback_tag = None
615
360
self.checker = None
616
361
if os.WIFEXITED(condition):
617
self.last_checker_status = os.WEXITSTATUS(condition)
618
if self.last_checker_status == 0:
619
logger.info("Checker for %(name)s succeeded",
362
exitstatus = os.WEXITSTATUS(condition)
363
if exitstatus == 0:
364
logger.info(u"Checker for %(name)s succeeded",
620
365
vars(self))
621
366
self.checked_ok()
622
367
else:
623
logger.info("Checker for %(name)s failed",
368
logger.info(u"Checker for %(name)s failed",
624
369
vars(self))
625
370
else:
626
self.last_checker_status = -1
627
logger.warning("Checker for %(name)s crashed?",
371
logger.warning(u"Checker for %(name)s crashed?",
628
372
vars(self))
629
373
630
374
def checked_ok(self):
631
"""Assert that the client has been seen, alive and well."""
375
"""Bump up the timeout for this client.
376
377
This should only be called when the client has been seen,
378
alive and well.
379
"""
632
380
self.last_checked_ok = datetime.datetime.utcnow()
633
self.last_checker_status = 0
634
self.bump_timeout()
635
636
def bump_timeout(self, timeout=None):
637
"""Bump up the timeout for this client."""
638
if timeout is None:
639
timeout = self.timeout
640
if self.disable_initiator_tag is not None:
641
gobject.source_remove(self.disable_initiator_tag)
642
if getattr(self, "enabled", False):
643
self.disable_initiator_tag = (gobject.timeout_add
644
(timedelta_to_milliseconds
645
(timeout), self.disable))
646
self.expires = datetime.datetime.utcnow() + timeout
647
648
def need_approval(self):
649
self.last_approval_request = datetime.datetime.utcnow()
381
gobject.source_remove(self.disable_initiator_tag)
382
self.disable_initiator_tag = (gobject.timeout_add
383
(self.timeout_milliseconds(),
384
self.disable))
650
385
651
386
def start_checker(self):
652
387
"""Start a new checker subprocess if one is not running.
659
394
# client would inevitably timeout, since no checker would get
660
395
# a chance to run to completion. If we instead leave running
661
396
# checkers alone, the checker would have to take more time
662
# than 'timeout' for the client to be disabled, which is as it
663
# should be.
397
# than 'timeout' for the client to be declared invalid, which
398
# is as it should be.
664
399
665
400
# If a checker exists, make sure it is not a zombie
666
try:
401
if self.checker is not None:
667
402
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
668
except (AttributeError, OSError) as error:
669
if (isinstance(error, OSError)
670
and error.errno != errno.ECHILD):
671
raise error
672
else:
673
403
if pid:
674
logger.warning("Checker was a zombie")
404
logger.warning(u"Checker was a zombie")
675
405
gobject.source_remove(self.checker_callback_tag)
676
406
self.checker_callback(pid, status,
677
407
self.current_checker_command)
682
412
command = self.checker_command % self.host
683
413
except TypeError:
684
414
# Escape attributes for the shell
685
escaped_attrs = dict(
686
(attr,
687
re.escape(unicode(str(getattr(self, attr, "")),
688
errors=
689
'replace')))
690
for attr in
691
self.runtime_expansions)
692
415
escaped_attrs = dict((key,
416
re.escape(unicode(str(val),
417
errors=
418
u'replace')))
419
for key, val in
420
vars(self).iteritems())
693
421
try:
694
422
command = self.checker_command % escaped_attrs
695
except TypeError as error:
696
logger.error('Could not format string "%s":'
697
' %s', self.checker_command, error)
423
except TypeError, error:
424
logger.error(u'Could not format string "%s":'
425
u' %s', self.checker_command, error)
698
426
return True # Try again later
699
427
self.current_checker_command = command
700
428
try:
701
logger.info("Starting checker %r for %s",
429
logger.info(u"Starting checker %r for %s",
702
430
command, self.name)
703
431
# We don't need to redirect stdout and stderr, since
704
432
# in normal mode, that is already done by daemon(),
706
434
# always replaced by /dev/null.)
707
435
self.checker = subprocess.Popen(command,
708
436
close_fds=True,
709
shell=True, cwd="/")
437
shell=True, cwd=u"/")
710
438
self.checker_callback_tag = (gobject.child_watch_add
711
439
(self.checker.pid,
712
440
self.checker_callback,
717
445
if pid:
718
446
gobject.source_remove(self.checker_callback_tag)
719
447
self.checker_callback(pid, status, command)
720
except OSError as error:
721
logger.error("Failed to start subprocess: %s",
448
except OSError, error:
449
logger.error(u"Failed to start subprocess: %s",
722
450
error)
723
451
# Re-run this periodically if run by gobject.timeout_add
724
452
return True
728
456
if self.checker_callback_tag:
729
457
gobject.source_remove(self.checker_callback_tag)
730
458
self.checker_callback_tag = None
731
if getattr(self, "checker", None) is None:
459
if getattr(self, u"checker", None) is None:
732
460
return
733
logger.debug("Stopping checker for %(name)s", vars(self))
461
logger.debug(u"Stopping checker for %(name)s", vars(self))
734
462
try:
735
463
os.kill(self.checker.pid, signal.SIGTERM)
736
#time.sleep(0.5)
464
#os.sleep(0.5)
737
465
#if self.checker.poll() is None:
738
466
# os.kill(self.checker.pid, signal.SIGKILL)
739
except OSError as error:
467
except OSError, error:
740
468
if error.errno != errno.ESRCH: # No such process
741
469
raise
742
470
self.checker = None
743
744
745
def dbus_service_property(dbus_interface, signature="v",
746
access="readwrite", byte_arrays=False):
471
472
def still_valid(self):
473
"""Has the timeout not yet passed for this client?"""
474
if not getattr(self, u"enabled", False):
475
return False
476
now = datetime.datetime.utcnow()
477
if self.last_checked_ok is None:
478
return now < (self.created + self.timeout)
479
else:
480
return now < (self.last_checked_ok + self.timeout)
481
482
483
def dbus_service_property(dbus_interface, signature=u"v",
484
access=u"readwrite", byte_arrays=False):
747
485
"""Decorators for marking methods of a DBusObjectWithProperties to
748
486
become properties on the D-Bus.
749
487
754
492
dbus.service.method, except there is only "signature", since the
755
493
type from Get() and the type sent to Set() is the same.
756
494
"""
757
# Encoding deeply encoded byte arrays is not supported yet by the
758
# "Set" method, so we fail early here:
759
if byte_arrays and signature != "ay":
760
raise ValueError("Byte arrays not supported for non-'ay'"
761
" signature %r" % signature)
762
495
def decorator(func):
763
496
func._dbus_is_property = True
764
497
func._dbus_interface = dbus_interface
765
498
func._dbus_signature = signature
766
499
func._dbus_access = access
767
500
func._dbus_name = func.__name__
768
if func._dbus_name.endswith("_dbus_property"):
501
if func._dbus_name.endswith(u"_dbus_property"):
769
502
func._dbus_name = func._dbus_name[:-14]
770
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
771
return func
772
return decorator
773
774
775
def dbus_interface_annotations(dbus_interface):
776
"""Decorator for marking functions returning interface annotations.
777
778
Usage:
779
780
@dbus_interface_annotations("org.example.Interface")
781
def _foo(self): # Function name does not matter
782
return {"org.freedesktop.DBus.Deprecated": "true",
783
"org.freedesktop.DBus.Property.EmitsChangedSignal":
784
"false"}
785
"""
786
def decorator(func):
787
func._dbus_is_interface = True
788
func._dbus_interface = dbus_interface
789
func._dbus_name = dbus_interface
790
return func
791
return decorator
792
793
794
def dbus_annotations(annotations):
795
"""Decorator to annotate D-Bus methods, signals or properties
796
Usage:
797
798
@dbus_service_property("org.example.Interface", signature="b",
799
access="r")
800
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
801
"org.freedesktop.DBus.Property."
802
"EmitsChangedSignal": "false"})
803
def Property_dbus_property(self):
804
return dbus.Boolean(False)
805
"""
806
def decorator(func):
807
func._dbus_annotations = annotations
503
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
808
504
return func
809
505
return decorator
810
506
830
526
831
527
class DBusObjectWithProperties(dbus.service.Object):
832
528
"""A D-Bus object with properties.
833
529
834
530
Classes inheriting from this can use the dbus_service_property
835
531
decorator to expose methods as D-Bus properties. It exposes the
836
532
standard Get(), Set(), and GetAll() methods on the D-Bus.
837
533
"""
838
534
839
535
@staticmethod
840
def _is_dbus_thing(thing):
841
"""Returns a function testing if an attribute is a D-Bus thing
842
843
If called like _is_dbus_thing("method") it returns a function
844
suitable for use as predicate to inspect.getmembers().
845
"""
846
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
847
False)
536
def _is_dbus_property(obj):
537
return getattr(obj, u"_dbus_is_property", False)
848
538
849
def _get_all_dbus_things(self, thing):
539
def _get_all_dbus_properties(self):
850
540
"""Returns a generator of (name, attribute) pairs
851
541
"""
852
return ((getattr(athing.__get__(self), "_dbus_name",
853
name),
854
athing.__get__(self))
855
for cls in self.__class__.__mro__
856
for name, athing in
857
inspect.getmembers(cls,
858
self._is_dbus_thing(thing)))
542
return ((prop._dbus_name, prop)
543
for name, prop in
544
inspect.getmembers(self, self._is_dbus_property))
859
545
860
546
def _get_dbus_property(self, interface_name, property_name):
861
547
"""Returns a bound method if one exists which is a D-Bus
862
548
property with the specified name and interface.
863
549
"""
864
for cls in self.__class__.__mro__:
865
for name, value in (inspect.getmembers
866
(cls,
867
self._is_dbus_thing("property"))):
868
if (value._dbus_name == property_name
869
and value._dbus_interface == interface_name):
870
return value.__get__(self)
871
550
for name in (property_name,
551
property_name + u"_dbus_property"):
552
prop = getattr(self, name, None)
553
if (prop is None
554
or not self._is_dbus_property(prop)
555
or prop._dbus_name != property_name
556
or (interface_name and prop._dbus_interface
557
and interface_name != prop._dbus_interface)):
558
continue
559
return prop
872
560
# No such property
873
raise DBusPropertyNotFound(self.dbus_object_path + ":"
874
+ interface_name + "."
561
raise DBusPropertyNotFound(self.dbus_object_path + u":"
562
+ interface_name + u"."
875
563
+ property_name)
876
564
877
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
878
out_signature="v")
565
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
566
out_signature=u"v")
879
567
def Get(self, interface_name, property_name):
880
568
"""Standard D-Bus property Get() method, see D-Bus standard.
881
569
"""
882
570
prop = self._get_dbus_property(interface_name, property_name)
883
if prop._dbus_access == "write":
571
if prop._dbus_access == u"write":
884
572
raise DBusPropertyAccessException(property_name)
885
573
value = prop()
886
if not hasattr(value, "variant_level"):
574
if not hasattr(value, u"variant_level"):
887
575
return value
888
576
return type(value)(value, variant_level=value.variant_level+1)
889
577
890
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
578
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
891
579
def Set(self, interface_name, property_name, value):
892
580
"""Standard D-Bus property Set() method, see D-Bus standard.
893
581
"""
894
582
prop = self._get_dbus_property(interface_name, property_name)
895
if prop._dbus_access == "read":
583
if prop._dbus_access == u"read":
896
584
raise DBusPropertyAccessException(property_name)
897
if prop._dbus_get_args_options["byte_arrays"]:
898
# The byte_arrays option is not supported yet on
899
# signatures other than "ay".
900
if prop._dbus_signature != "ay":
901
raise ValueError
902
value = dbus.ByteArray(b''.join(chr(byte)
903
for byte in value))
585
if prop._dbus_get_args_options[u"byte_arrays"]:
586
value = dbus.ByteArray(''.join(unichr(byte)
587
for byte in value))
904
588
prop(value)
905
589
906
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
907
out_signature="a{sv}")
590
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
591
out_signature=u"a{sv}")
908
592
def GetAll(self, interface_name):
909
593
"""Standard D-Bus property GetAll() method, see D-Bus
910
594
standard.
911
595
912
596
Note: Will not include properties with access="write".
913
597
"""
914
properties = {}
915
for name, prop in self._get_all_dbus_things("property"):
598
all = {}
599
for name, prop in self._get_all_dbus_properties():
916
600
if (interface_name
917
601
and interface_name != prop._dbus_interface):
918
602
# Interface non-empty but did not match
919
603
continue
920
604
# Ignore write-only properties
921
if prop._dbus_access == "write":
605
if prop._dbus_access == u"write":
922
606
continue
923
607
value = prop()
924
if not hasattr(value, "variant_level"):
925
properties[name] = value
608
if not hasattr(value, u"variant_level"):
609
all[name] = value
926
610
continue
927
properties[name] = type(value)(value, variant_level=
928
value.variant_level+1)
929
return dbus.Dictionary(properties, signature="sv")
611
all[name] = type(value)(value, variant_level=
612
value.variant_level+1)
613
return dbus.Dictionary(all, signature=u"sv")
930
614
931
615
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
932
out_signature="s",
616
out_signature=u"s",
933
617
path_keyword='object_path',
934
618
connection_keyword='connection')
935
619
def Introspect(self, object_path, connection):
936
"""Overloading of standard D-Bus method.
937
938
Inserts property tags and interface annotation tags.
620
"""Standard D-Bus method, overloaded to insert property tags.
939
621
"""
940
622
xmlstring = dbus.service.Object.Introspect(self, object_path,
941
connection)
942
try:
943
document = xml.dom.minidom.parseString(xmlstring)
944
def make_tag(document, name, prop):
945
e = document.createElement("property")
946
e.setAttribute("name", name)
947
e.setAttribute("type", prop._dbus_signature)
948
e.setAttribute("access", prop._dbus_access)
949
return e
950
for if_tag in document.getElementsByTagName("interface"):
951
# Add property tags
952
for tag in (make_tag(document, name, prop)
953
for name, prop
954
in self._get_all_dbus_things("property")
955
if prop._dbus_interface
956
== if_tag.getAttribute("name")):
957
if_tag.appendChild(tag)
958
# Add annotation tags
959
for typ in ("method", "signal", "property"):
960
for tag in if_tag.getElementsByTagName(typ):
961
annots = dict()
962
for name, prop in (self.
963
_get_all_dbus_things(typ)):
964
if (name == tag.getAttribute("name")
965
and prop._dbus_interface
966
== if_tag.getAttribute("name")):
967
annots.update(getattr
968
(prop,
969
"_dbus_annotations",
970
{}))
971
for name, value in annots.iteritems():
972
ann_tag = document.createElement(
973
"annotation")
974
ann_tag.setAttribute("name", name)
975
ann_tag.setAttribute("value", value)
976
tag.appendChild(ann_tag)
977
# Add interface annotation tags
978
for annotation, value in dict(
979
itertools.chain(
980
*(annotations().iteritems()
981
for name, annotations in
982
self._get_all_dbus_things("interface")
983
if name == if_tag.getAttribute("name")
984
))).iteritems():
985
ann_tag = document.createElement("annotation")
986
ann_tag.setAttribute("name", annotation)
987
ann_tag.setAttribute("value", value)
988
if_tag.appendChild(ann_tag)
989
# Add the names to the return values for the
990
# "org.freedesktop.DBus.Properties" methods
991
if (if_tag.getAttribute("name")
992
== "org.freedesktop.DBus.Properties"):
993
for cn in if_tag.getElementsByTagName("method"):
994
if cn.getAttribute("name") == "Get":
995
for arg in cn.getElementsByTagName("arg"):
996
if (arg.getAttribute("direction")
997
== "out"):
998
arg.setAttribute("name", "value")
999
elif cn.getAttribute("name") == "GetAll":
1000
for arg in cn.getElementsByTagName("arg"):
1001
if (arg.getAttribute("direction")
1002
== "out"):
1003
arg.setAttribute("name", "props")
1004
xmlstring = document.toxml("utf-8")
1005
document.unlink()
1006
except (AttributeError, xml.dom.DOMException,
1007
xml.parsers.expat.ExpatError) as error:
1008
logger.error("Failed to override Introspection method",
1009
error)
623
connection)
624
document = xml.dom.minidom.parseString(xmlstring)
625
del xmlstring
626
def make_tag(document, name, prop):
627
e = document.createElement(u"property")
628
e.setAttribute(u"name", name)
629
e.setAttribute(u"type", prop._dbus_signature)
630
e.setAttribute(u"access", prop._dbus_access)
631
return e
632
for if_tag in document.getElementsByTagName(u"interface"):
633
for tag in (make_tag(document, name, prop)
634
for name, prop
635
in self._get_all_dbus_properties()
636
if prop._dbus_interface
637
== if_tag.getAttribute(u"name")):
638
if_tag.appendChild(tag)
639
xmlstring = document.toxml(u"utf-8")
640
document.unlink()
1010
641
return xmlstring
1011
642
1012
643
1013
def datetime_to_dbus (dt, variant_level=0):
1014
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1015
if dt is None:
1016
return dbus.String("", variant_level = variant_level)
1017
return dbus.String(dt.isoformat(),
1018
variant_level=variant_level)
1019
1020
1021
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
1022
.__metaclass__):
1023
"""Applied to an empty subclass of a D-Bus object, this metaclass
1024
will add additional D-Bus attributes matching a certain pattern.
1025
"""
1026
def __new__(mcs, name, bases, attr):
1027
# Go through all the base classes which could have D-Bus
1028
# methods, signals, or properties in them
1029
old_interface_names = []
1030
for base in (b for b in bases
1031
if issubclass(b, dbus.service.Object)):
1032
# Go though all attributes of the base class
1033
for attrname, attribute in inspect.getmembers(base):
1034
# Ignore non-D-Bus attributes, and D-Bus attributes
1035
# with the wrong interface name
1036
if (not hasattr(attribute, "_dbus_interface")
1037
or not attribute._dbus_interface
1038
.startswith("se.recompile.Mandos")):
1039
continue
1040
# Create an alternate D-Bus interface name based on
1041
# the current name
1042
alt_interface = (attribute._dbus_interface
1043
.replace("se.recompile.Mandos",
1044
"se.bsnet.fukt.Mandos"))
1045
if alt_interface != attribute._dbus_interface:
1046
old_interface_names.append(alt_interface)
1047
# Is this a D-Bus signal?
1048
if getattr(attribute, "_dbus_is_signal", False):
1049
# Extract the original non-method function by
1050
# black magic
1051
nonmethod_func = (dict(
1052
zip(attribute.func_code.co_freevars,
1053
attribute.__closure__))["func"]
1054
.cell_contents)
1055
# Create a new, but exactly alike, function
1056
# object, and decorate it to be a new D-Bus signal
1057
# with the alternate D-Bus interface name
1058
new_function = (dbus.service.signal
1059
(alt_interface,
1060
attribute._dbus_signature)
1061
(types.FunctionType(
1062
nonmethod_func.func_code,
1063
nonmethod_func.func_globals,
1064
nonmethod_func.func_name,
1065
nonmethod_func.func_defaults,
1066
nonmethod_func.func_closure)))
1067
# Copy annotations, if any
1068
try:
1069
new_function._dbus_annotations = (
1070
dict(attribute._dbus_annotations))
1071
except AttributeError:
1072
pass
1073
# Define a creator of a function to call both the
1074
# old and new functions, so both the old and new
1075
# signals gets sent when the function is called
1076
def fixscope(func1, func2):
1077
"""This function is a scope container to pass
1078
func1 and func2 to the "call_both" function
1079
outside of its arguments"""
1080
def call_both(*args, **kwargs):
1081
"""This function will emit two D-Bus
1082
signals by calling func1 and func2"""
1083
func1(*args, **kwargs)
1084
func2(*args, **kwargs)
1085
return call_both
1086
# Create the "call_both" function and add it to
1087
# the class
1088
attr[attrname] = fixscope(attribute,
1089
new_function)
1090
# Is this a D-Bus method?
1091
elif getattr(attribute, "_dbus_is_method", False):
1092
# Create a new, but exactly alike, function
1093
# object. Decorate it to be a new D-Bus method
1094
# with the alternate D-Bus interface name. Add it
1095
# to the class.
1096
attr[attrname] = (dbus.service.method
1097
(alt_interface,
1098
attribute._dbus_in_signature,
1099
attribute._dbus_out_signature)
1100
(types.FunctionType
1101
(attribute.func_code,
1102
attribute.func_globals,
1103
attribute.func_name,
1104
attribute.func_defaults,
1105
attribute.func_closure)))
1106
# Copy annotations, if any
1107
try:
1108
attr[attrname]._dbus_annotations = (
1109
dict(attribute._dbus_annotations))
1110
except AttributeError:
1111
pass
1112
# Is this a D-Bus property?
1113
elif getattr(attribute, "_dbus_is_property", False):
1114
# Create a new, but exactly alike, function
1115
# object, and decorate it to be a new D-Bus
1116
# property with the alternate D-Bus interface
1117
# name. Add it to the class.
1118
attr[attrname] = (dbus_service_property
1119
(alt_interface,
1120
attribute._dbus_signature,
1121
attribute._dbus_access,
1122
attribute
1123
._dbus_get_args_options
1124
["byte_arrays"])
1125
(types.FunctionType
1126
(attribute.func_code,
1127
attribute.func_globals,
1128
attribute.func_name,
1129
attribute.func_defaults,
1130
attribute.func_closure)))
1131
# Copy annotations, if any
1132
try:
1133
attr[attrname]._dbus_annotations = (
1134
dict(attribute._dbus_annotations))
1135
except AttributeError:
1136
pass
1137
# Is this a D-Bus interface?
1138
elif getattr(attribute, "_dbus_is_interface", False):
1139
# Create a new, but exactly alike, function
1140
# object. Decorate it to be a new D-Bus interface
1141
# with the alternate D-Bus interface name. Add it
1142
# to the class.
1143
attr[attrname] = (dbus_interface_annotations
1144
(alt_interface)
1145
(types.FunctionType
1146
(attribute.func_code,
1147
attribute.func_globals,
1148
attribute.func_name,
1149
attribute.func_defaults,
1150
attribute.func_closure)))
1151
# Deprecate all old interfaces
1152
basename="_AlternateDBusNamesMetaclass_interface_annotation{0}"
1153
for old_interface_name in old_interface_names:
1154
@dbus_interface_annotations(old_interface_name)
1155
def func(self):
1156
return { "org.freedesktop.DBus.Deprecated": "true" }
1157
# Find an unused name
1158
for aname in (basename.format(i) for i in
1159
itertools.count()):
1160
if aname not in attr:
1161
attr[aname] = func
1162
break
1163
return type.__new__(mcs, name, bases, attr)
1164
1165
1166
644
class ClientDBus(Client, DBusObjectWithProperties):
1167
645
"""A Client class using D-Bus
1168
646
1170
648
dbus_object_path: dbus.ObjectPath
1171
649
bus: dbus.SystemBus()
1172
650
"""
1173
1174
runtime_expansions = (Client.runtime_expansions
1175
+ ("dbus_object_path",))
1176
1177
651
# dbus.service.Object doesn't use super(), so we can't either.
1178
652
1179
653
def __init__(self, bus = None, *args, **kwargs):
1181
655
Client.__init__(self, *args, **kwargs)
1182
656
# Only now, when this client is initialized, can it show up on
1183
657
# the D-Bus
1184
client_object_name = unicode(self.name).translate(
1185
{ord("."): ord("_"),
1186
ord("-"): ord("_")})
1187
658
self.dbus_object_path = (dbus.ObjectPath
1188
("/clients/" + client_object_name))
659
(u"/clients/"
660
+ self.name.replace(u".", u"_")))
1189
661
DBusObjectWithProperties.__init__(self, self.bus,
1190
662
self.dbus_object_path)
1191
1192
def notifychangeproperty(transform_func,
1193
dbus_name, type_func=lambda x: x,
1194
variant_level=1):
1195
""" Modify a variable so that it's a property which announces
1196
its changes to DBus.
1197
1198
transform_fun: Function that takes a value and a variant_level
1199
and transforms it to a D-Bus type.
1200
dbus_name: D-Bus name of the variable
1201
type_func: Function that transform the value before sending it
1202
to the D-Bus. Default: no transform
1203
variant_level: D-Bus variant level. Default: 1
1204
"""
1205
attrname = "_{0}".format(dbus_name)
1206
def setter(self, value):
1207
if hasattr(self, "dbus_object_path"):
1208
if (not hasattr(self, attrname) or
1209
type_func(getattr(self, attrname, None))
1210
!= type_func(value)):
1211
dbus_value = transform_func(type_func(value),
1212
variant_level
1213
=variant_level)
1214
self.PropertyChanged(dbus.String(dbus_name),
1215
dbus_value)
1216
setattr(self, attrname, value)
1217
1218
return property(lambda self: getattr(self, attrname), setter)
1219
1220
1221
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1222
approvals_pending = notifychangeproperty(dbus.Boolean,
1223
"ApprovalPending",
1224
type_func = bool)
1225
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1226
last_enabled = notifychangeproperty(datetime_to_dbus,
1227
"LastEnabled")
1228
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1229
type_func = lambda checker:
1230
checker is not None)
1231
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1232
"LastCheckedOK")
1233
last_checker_status = notifychangeproperty(dbus.Int16,
1234
"LastCheckerStatus")
1235
last_approval_request = notifychangeproperty(
1236
datetime_to_dbus, "LastApprovalRequest")
1237
approved_by_default = notifychangeproperty(dbus.Boolean,
1238
"ApprovedByDefault")
1239
approval_delay = notifychangeproperty(dbus.UInt64,
1240
"ApprovalDelay",
1241
type_func =
1242
timedelta_to_milliseconds)
1243
approval_duration = notifychangeproperty(
1244
dbus.UInt64, "ApprovalDuration",
1245
type_func = timedelta_to_milliseconds)
1246
host = notifychangeproperty(dbus.String, "Host")
1247
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1248
type_func =
1249
timedelta_to_milliseconds)
1250
extended_timeout = notifychangeproperty(
1251
dbus.UInt64, "ExtendedTimeout",
1252
type_func = timedelta_to_milliseconds)
1253
interval = notifychangeproperty(dbus.UInt64,
1254
"Interval",
1255
type_func =
1256
timedelta_to_milliseconds)
1257
checker_command = notifychangeproperty(dbus.String, "Checker")
1258
1259
del notifychangeproperty
663
664
@staticmethod
665
def _datetime_to_dbus(dt, variant_level=0):
666
"""Convert a UTC datetime.datetime() to a D-Bus type."""
667
return dbus.String(dt.isoformat(),
668
variant_level=variant_level)
669
670
def enable(self):
671
oldstate = getattr(self, u"enabled", False)
672
r = Client.enable(self)
673
if oldstate != self.enabled:
674
# Emit D-Bus signals
675
self.PropertyChanged(dbus.String(u"enabled"),
676
dbus.Boolean(True, variant_level=1))
677
self.PropertyChanged(
678
dbus.String(u"last_enabled"),
679
self._datetime_to_dbus(self.last_enabled,
680
variant_level=1))
681
return r
682
683
def disable(self, signal = True):
684
oldstate = getattr(self, u"enabled", False)
685
r = Client.disable(self)
686
if signal and oldstate != self.enabled:
687
# Emit D-Bus signal
688
self.PropertyChanged(dbus.String(u"enabled"),
689
dbus.Boolean(False, variant_level=1))
690
return r
1260
691
1261
692
def __del__(self, *args, **kwargs):
1262
693
try:
1263
694
self.remove_from_connection()
1264
695
except LookupError:
1265
696
pass
1266
if hasattr(DBusObjectWithProperties, "__del__"):
697
if hasattr(DBusObjectWithProperties, u"__del__"):
1267
698
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1268
699
Client.__del__(self, *args, **kwargs)
1269
700
1271
702
*args, **kwargs):
1272
703
self.checker_callback_tag = None
1273
704
self.checker = None
705
# Emit D-Bus signal
706
self.PropertyChanged(dbus.String(u"checker_running"),
707
dbus.Boolean(False, variant_level=1))
1274
708
if os.WIFEXITED(condition):
1275
709
exitstatus = os.WEXITSTATUS(condition)
1276
710
# Emit D-Bus signal
1286
720
return Client.checker_callback(self, pid, condition, command,
1287
721
*args, **kwargs)
1288
722
723
def checked_ok(self, *args, **kwargs):
724
r = Client.checked_ok(self, *args, **kwargs)
725
# Emit D-Bus signal
726
self.PropertyChanged(
727
dbus.String(u"last_checked_ok"),
728
(self._datetime_to_dbus(self.last_checked_ok,
729
variant_level=1)))
730
return r
731
1289
732
def start_checker(self, *args, **kwargs):
1290
733
old_checker = self.checker
1291
734
if self.checker is not None:
1298
741
and old_checker_pid != self.checker.pid):
1299
742
# Emit D-Bus signal
1300
743
self.CheckerStarted(self.current_checker_command)
1301
return r
1302
1303
def _reset_approved(self):
1304
self.approved = None
1305
return False
1306
1307
def approve(self, value=True):
1308
self.send_changedstate()
1309
self.approved = value
1310
gobject.timeout_add(timedelta_to_milliseconds
1311
(self.approval_duration),
1312
self._reset_approved)
1313
1314
1315
## D-Bus methods, signals & properties
1316
_interface = "se.recompile.Mandos.Client"
1317
1318
## Interfaces
1319
1320
@dbus_interface_annotations(_interface)
1321
def _foo(self):
1322
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1323
"false"}
1324
1325
## Signals
744
self.PropertyChanged(
745
dbus.String(u"checker_running"),
746
dbus.Boolean(True, variant_level=1))
747
return r
748
749
def stop_checker(self, *args, **kwargs):
750
old_checker = getattr(self, u"checker", None)
751
r = Client.stop_checker(self, *args, **kwargs)
752
if (old_checker is not None
753
and getattr(self, u"checker", None) is None):
754
self.PropertyChanged(dbus.String(u"checker_running"),
755
dbus.Boolean(False, variant_level=1))
756
return r
757
758
## D-Bus methods & signals
759
_interface = u"se.bsnet.fukt.Mandos.Client"
1326
760
1327
761
# CheckerCompleted - signal
1328
@dbus.service.signal(_interface, signature="nxs")
762
@dbus.service.signal(_interface, signature=u"nxs")
1329
763
def CheckerCompleted(self, exitcode, waitstatus, command):
1330
764
"D-Bus signal"
1331
765
pass
1332
766
1333
767
# CheckerStarted - signal
1334
@dbus.service.signal(_interface, signature="s")
768
@dbus.service.signal(_interface, signature=u"s")
1335
769
def CheckerStarted(self, command):
1336
770
"D-Bus signal"
1337
771
pass
1338
772
1339
773
# PropertyChanged - signal
1340
@dbus.service.signal(_interface, signature="sv")
774
@dbus.service.signal(_interface, signature=u"sv")
1341
775
def PropertyChanged(self, property, value):
1342
776
"D-Bus signal"
1343
777
pass
1344
778
1345
# GotSecret - signal
779
# ReceivedSecret - signal
1346
780
@dbus.service.signal(_interface)
1347
def GotSecret(self):
1348
"""D-Bus signal
1349
Is sent after a successful transfer of secret from the Mandos
1350
server to mandos-client
1351
"""
781
def ReceivedSecret(self):
782
"D-Bus signal"
1352
783
pass
1353
784
1354
785
# Rejected - signal
1355
@dbus.service.signal(_interface, signature="s")
1356
def Rejected(self, reason):
786
@dbus.service.signal(_interface)
787
def Rejected(self):
1357
788
"D-Bus signal"
1358
789
pass
1359
790
1360
# NeedApproval - signal
1361
@dbus.service.signal(_interface, signature="tb")
1362
def NeedApproval(self, timeout, default):
1363
"D-Bus signal"
1364
return self.need_approval()
1365
1366
## Methods
1367
1368
# Approve - method
1369
@dbus.service.method(_interface, in_signature="b")
1370
def Approve(self, value):
1371
self.approve(value)
1372
1373
# CheckedOK - method
1374
@dbus.service.method(_interface)
1375
def CheckedOK(self):
1376
self.checked_ok()
1377
1378
# Enable - method
1379
@dbus.service.method(_interface)
1380
def Enable(self):
1381
"D-Bus method"
1382
self.enable()
1383
1384
# StartChecker - method
1385
@dbus.service.method(_interface)
1386
def StartChecker(self):
1387
"D-Bus method"
1388
self.start_checker()
1389
1390
# Disable - method
1391
@dbus.service.method(_interface)
1392
def Disable(self):
1393
"D-Bus method"
1394
self.disable()
1395
1396
# StopChecker - method
1397
@dbus.service.method(_interface)
1398
def StopChecker(self):
1399
self.stop_checker()
1400
1401
## Properties
1402
1403
# ApprovalPending - property
1404
@dbus_service_property(_interface, signature="b", access="read")
1405
def ApprovalPending_dbus_property(self):
1406
return dbus.Boolean(bool(self.approvals_pending))
1407
1408
# ApprovedByDefault - property
1409
@dbus_service_property(_interface, signature="b",
1410
access="readwrite")
1411
def ApprovedByDefault_dbus_property(self, value=None):
1412
if value is None: # get
1413
return dbus.Boolean(self.approved_by_default)
1414
self.approved_by_default = bool(value)
1415
1416
# ApprovalDelay - property
1417
@dbus_service_property(_interface, signature="t",
1418
access="readwrite")
1419
def ApprovalDelay_dbus_property(self, value=None):
1420
if value is None: # get
1421
return dbus.UInt64(self.approval_delay_milliseconds())
1422
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1423
1424
# ApprovalDuration - property
1425
@dbus_service_property(_interface, signature="t",
1426
access="readwrite")
1427
def ApprovalDuration_dbus_property(self, value=None):
1428
if value is None: # get
1429
return dbus.UInt64(timedelta_to_milliseconds(
1430
self.approval_duration))
1431
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1432
1433
# Name - property
1434
@dbus_service_property(_interface, signature="s", access="read")
1435
def Name_dbus_property(self):
791
# name - property
792
@dbus_service_property(_interface, signature=u"s", access=u"read")
793
def name_dbus_property(self):
1436
794
return dbus.String(self.name)
1437
795
1438
# Fingerprint - property
1439
@dbus_service_property(_interface, signature="s", access="read")
1440
def Fingerprint_dbus_property(self):
796
# fingerprint - property
797
@dbus_service_property(_interface, signature=u"s", access=u"read")
798
def fingerprint_dbus_property(self):
1441
799
return dbus.String(self.fingerprint)
1442
800
1443
# Host - property
1444
@dbus_service_property(_interface, signature="s",
1445
access="readwrite")
1446
def Host_dbus_property(self, value=None):
801
# host - property
802
@dbus_service_property(_interface, signature=u"s",
803
access=u"readwrite")
804
def host_dbus_property(self, value=None):
1447
805
if value is None: # get
1448
806
return dbus.String(self.host)
1449
self.host = unicode(value)
1450
1451
# Created - property
1452
@dbus_service_property(_interface, signature="s", access="read")
1453
def Created_dbus_property(self):
1454
return datetime_to_dbus(self.created)
1455
1456
# LastEnabled - property
1457
@dbus_service_property(_interface, signature="s", access="read")
1458
def LastEnabled_dbus_property(self):
1459
return datetime_to_dbus(self.last_enabled)
1460
1461
# Enabled - property
1462
@dbus_service_property(_interface, signature="b",
1463
access="readwrite")
1464
def Enabled_dbus_property(self, value=None):
807
self.host = value
808
# Emit D-Bus signal
809
self.PropertyChanged(dbus.String(u"host"),
810
dbus.String(value, variant_level=1))
811
812
# created - property
813
@dbus_service_property(_interface, signature=u"s", access=u"read")
814
def created_dbus_property(self):
815
return dbus.String(self._datetime_to_dbus(self.created))
816
817
# last_enabled - property
818
@dbus_service_property(_interface, signature=u"s", access=u"read")
819
def last_enabled_dbus_property(self):
820
if self.last_enabled is None:
821
return dbus.String(u"")
822
return dbus.String(self._datetime_to_dbus(self.last_enabled))
823
824
# enabled - property
825
@dbus_service_property(_interface, signature=u"b",
826
access=u"readwrite")
827
def enabled_dbus_property(self, value=None):
1465
828
if value is None: # get
1466
829
return dbus.Boolean(self.enabled)
1467
830
if value:
1469
832
else:
1470
833
self.disable()
1471
834
1472
# LastCheckedOK - property
1473
@dbus_service_property(_interface, signature="s",
1474
access="readwrite")
1475
def LastCheckedOK_dbus_property(self, value=None):
1476
if value is not None:
1477
self.checked_ok()
1478
return
1479
return datetime_to_dbus(self.last_checked_ok)
1480
1481
# LastCheckerStatus - property
1482
@dbus_service_property(_interface, signature="n",
1483
access="read")
1484
def LastCheckerStatus_dbus_property(self):
1485
return dbus.Int16(self.last_checker_status)
1486
1487
# Expires - property
1488
@dbus_service_property(_interface, signature="s", access="read")
1489
def Expires_dbus_property(self):
1490
return datetime_to_dbus(self.expires)
1491
1492
# LastApprovalRequest - property
1493
@dbus_service_property(_interface, signature="s", access="read")
1494
def LastApprovalRequest_dbus_property(self):
1495
return datetime_to_dbus(self.last_approval_request)
1496
1497
# Timeout - property
1498
@dbus_service_property(_interface, signature="t",
1499
access="readwrite")
1500
def Timeout_dbus_property(self, value=None):
835
# last_checked_ok - property
836
@dbus_service_property(_interface, signature=u"s", access=u"read")
837
def last_checked_ok_dbus_property(self):
838
if self.last_checked_ok is None:
839
return dbus.String(u"")
840
return dbus.String(self._datetime_to_dbus(self
841
.last_checked_ok))
842
843
# timeout - property
844
@dbus_service_property(_interface, signature=u"t",
845
access=u"readwrite")
846
def timeout_dbus_property(self, value=None):
1501
847
if value is None: # get
1502
848
return dbus.UInt64(self.timeout_milliseconds())
1503
849
self.timeout = datetime.timedelta(0, 0, 0, value)
850
# Emit D-Bus signal
851
self.PropertyChanged(dbus.String(u"timeout"),
852
dbus.UInt64(value, variant_level=1))
853
if getattr(self, u"disable_initiator_tag", None) is None:
854
return
1504
855
# Reschedule timeout
1505
if self.enabled:
1506
now = datetime.datetime.utcnow()
1507
time_to_die = timedelta_to_milliseconds(
1508
(self.last_checked_ok + self.timeout) - now)
1509
if time_to_die <= 0:
1510
# The timeout has passed
1511
self.disable()
1512
else:
1513
self.expires = (now +
1514
datetime.timedelta(milliseconds =
1515
time_to_die))
1516
if (getattr(self, "disable_initiator_tag", None)
1517
is None):
1518
return
1519
gobject.source_remove(self.disable_initiator_tag)
1520
self.disable_initiator_tag = (gobject.timeout_add
1521
(time_to_die,
1522
self.disable))
1523
1524
# ExtendedTimeout - property
1525
@dbus_service_property(_interface, signature="t",
1526
access="readwrite")
1527
def ExtendedTimeout_dbus_property(self, value=None):
1528
if value is None: # get
1529
return dbus.UInt64(self.extended_timeout_milliseconds())
1530
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1531
1532
# Interval - property
1533
@dbus_service_property(_interface, signature="t",
1534
access="readwrite")
1535
def Interval_dbus_property(self, value=None):
856
gobject.source_remove(self.disable_initiator_tag)
857
self.disable_initiator_tag = None
858
time_to_die = (self.
859
_timedelta_to_milliseconds((self
860
.last_checked_ok
861
+ self.timeout)
862
- datetime.datetime
863
.utcnow()))
864
if time_to_die <= 0:
865
# The timeout has passed
866
self.disable()
867
else:
868
self.disable_initiator_tag = (gobject.timeout_add
869
(time_to_die, self.disable))
870
871
# interval - property
872
@dbus_service_property(_interface, signature=u"t",
873
access=u"readwrite")
874
def interval_dbus_property(self, value=None):
1536
875
if value is None: # get
1537
876
return dbus.UInt64(self.interval_milliseconds())
1538
877
self.interval = datetime.timedelta(0, 0, 0, value)
1539
if getattr(self, "checker_initiator_tag", None) is None:
878
# Emit D-Bus signal
879
self.PropertyChanged(dbus.String(u"interval"),
880
dbus.UInt64(value, variant_level=1))
881
if getattr(self, u"checker_initiator_tag", None) is None:
1540
882
return
1541
if self.enabled:
1542
# Reschedule checker run
1543
gobject.source_remove(self.checker_initiator_tag)
1544
self.checker_initiator_tag = (gobject.timeout_add
1545
(value, self.start_checker))
1546
self.start_checker() # Start one now, too
1547
1548
# Checker - property
1549
@dbus_service_property(_interface, signature="s",
1550
access="readwrite")
1551
def Checker_dbus_property(self, value=None):
883
# Reschedule checker run
884
gobject.source_remove(self.checker_initiator_tag)
885
self.checker_initiator_tag = (gobject.timeout_add
886
(value, self.start_checker))
887
self.start_checker() # Start one now, too
888
889
# checker - property
890
@dbus_service_property(_interface, signature=u"s",
891
access=u"readwrite")
892
def checker_dbus_property(self, value=None):
1552
893
if value is None: # get
1553
894
return dbus.String(self.checker_command)
1554
self.checker_command = unicode(value)
895
self.checker_command = value
896
# Emit D-Bus signal
897
self.PropertyChanged(dbus.String(u"checker"),
898
dbus.String(self.checker_command,
899
variant_level=1))
1555
900
1556
# CheckerRunning - property
1557
@dbus_service_property(_interface, signature="b",
1558
access="readwrite")
1559
def CheckerRunning_dbus_property(self, value=None):
901
# checker_running - property
902
@dbus_service_property(_interface, signature=u"b",
903
access=u"readwrite")
904
def checker_running_dbus_property(self, value=None):
1560
905
if value is None: # get
1561
906
return dbus.Boolean(self.checker is not None)
1562
907
if value:
1564
909
else:
1565
910
self.stop_checker()
1566
911
1567
# ObjectPath - property
1568
@dbus_service_property(_interface, signature="o", access="read")
1569
def ObjectPath_dbus_property(self):
912
# object_path - property
913
@dbus_service_property(_interface, signature=u"o", access=u"read")
914
def object_path_dbus_property(self):
1570
915
return self.dbus_object_path # is already a dbus.ObjectPath
1571
916
1572
# Secret = property
1573
@dbus_service_property(_interface, signature="ay",
1574
access="write", byte_arrays=True)
1575
def Secret_dbus_property(self, value):
917
# secret = property xxx
918
@dbus_service_property(_interface, signature=u"ay",
919
access=u"write", byte_arrays=True)
920
def secret_dbus_property(self, value):
1576
921
self.secret = str(value)
1577
922
1578
923
del _interface
1579
924
1580
925
1581
class ProxyClient(object):
1582
def __init__(self, child_pipe, fpr, address):
1583
self._pipe = child_pipe
1584
self._pipe.send(('init', fpr, address))
1585
if not self._pipe.recv():
1586
raise KeyError()
1587
1588
def __getattribute__(self, name):
1589
if name == '_pipe':
1590
return super(ProxyClient, self).__getattribute__(name)
1591
self._pipe.send(('getattr', name))
1592
data = self._pipe.recv()
1593
if data[0] == 'data':
1594
return data[1]
1595
if data[0] == 'function':
1596
def func(*args, **kwargs):
1597
self._pipe.send(('funcall', name, args, kwargs))
1598
return self._pipe.recv()[1]
1599
return func
1600
1601
def __setattr__(self, name, value):
1602
if name == '_pipe':
1603
return super(ProxyClient, self).__setattr__(name, value)
1604
self._pipe.send(('setattr', name, value))
1605
1606
1607
class ClientDBusTransitional(ClientDBus):
1608
__metaclass__ = AlternateDBusNamesMetaclass
1609
1610
1611
926
class ClientHandler(socketserver.BaseRequestHandler, object):
1612
927
"""A class to handle client connections.
1613
928
1615
930
Note: This will run in its own forked process."""
1616
931
1617
932
def handle(self):
1618
with contextlib.closing(self.server.child_pipe) as child_pipe:
1619
logger.info("TCP connection from: %s",
1620
unicode(self.client_address))
1621
logger.debug("Pipe FD: %d",
1622
self.server.child_pipe.fileno())
1623
933
logger.info(u"TCP connection from: %s",
934
unicode(self.client_address))
935
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
936
# Open IPC pipe to parent process
937
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1624
938
session = (gnutls.connection
1625
939
.ClientSession(self.request,
1626
940
gnutls.connection
1627
941
.X509Credentials()))
1628
942
943
line = self.request.makefile().readline()
944
logger.debug(u"Protocol version: %r", line)
945
try:
946
if int(line.strip().split()[0]) > 1:
947
raise RuntimeError
948
except (ValueError, IndexError, RuntimeError), error:
949
logger.error(u"Unknown protocol version: %s", error)
950
return
951
1629
952
# Note: gnutls.connection.X509Credentials is really a
1630
953
# generic GnuTLS certificate credentials object so long as
1631
954
# no X.509 keys are added to it. Therefore, we can use it
1632
955
# here despite using OpenPGP certificates.
1633
956
1634
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1635
# "+AES-256-CBC", "+SHA1",
1636
# "+COMP-NULL", "+CTYPE-OPENPGP",
1637
# "+DHE-DSS"))
957
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
958
# u"+AES-256-CBC", u"+SHA1",
959
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
960
# u"+DHE-DSS"))
1638
961
# Use a fallback default, since this MUST be set.
1639
962
priority = self.server.gnutls_priority
1640
963
if priority is None:
1641
priority = "NORMAL"
964
priority = u"NORMAL"
1642
965
(gnutls.library.functions
1643
966
.gnutls_priority_set_direct(session._c_object,
1644
967
priority, None))
1645
968
1646
# Start communication using the Mandos protocol
1647
# Get protocol number
1648
line = self.request.makefile().readline()
1649
logger.debug("Protocol version: %r", line)
1650
try:
1651
if int(line.strip().split()[0]) > 1:
1652
raise RuntimeError
1653
except (ValueError, IndexError, RuntimeError) as error:
1654
logger.error("Unknown protocol version: %s", error)
1655
return
1656
1657
# Start GnuTLS connection
1658
969
try:
1659
970
session.handshake()
1660
except gnutls.errors.GNUTLSError as error:
1661
logger.warning("Handshake failed: %s", error)
971
except gnutls.errors.GNUTLSError, error:
972
logger.warning(u"Handshake failed: %s", error)
1662
973
# Do not run session.bye() here: the session is not
1663
974
# established. Just abandon the request.
1664
975
return
1665
logger.debug("Handshake succeeded")
1666
1667
approval_required = False
976
logger.debug(u"Handshake succeeded")
1668
977
try:
1669
try:
1670
fpr = self.fingerprint(self.peer_certificate
1671
(session))
1672
except (TypeError,
1673
gnutls.errors.GNUTLSError) as error:
1674
logger.warning("Bad certificate: %s", error)
1675
return
1676
logger.debug("Fingerprint: %s", fpr)
1677
1678
try:
1679
client = ProxyClient(child_pipe, fpr,
1680
self.client_address)
1681
except KeyError:
1682
return
1683
1684
if client.approval_delay:
1685
delay = client.approval_delay
1686
client.approvals_pending += 1
1687
approval_required = True
1688
1689
while True:
1690
if not client.enabled:
1691
logger.info("Client %s is disabled",
1692
client.name)
1693
if self.server.use_dbus:
1694
# Emit D-Bus signal
1695
client.Rejected("Disabled")
1696
return
1697
1698
if client.approved or not client.approval_delay:
1699
#We are approved or approval is disabled
1700
break
1701
elif client.approved is None:
1702
logger.info("Client %s needs approval",
1703
client.name)
1704
if self.server.use_dbus:
1705
# Emit D-Bus signal
1706
client.NeedApproval(
1707
client.approval_delay_milliseconds(),
1708
client.approved_by_default)
1709
else:
1710
logger.warning("Client %s was not approved",
1711
client.name)
1712
if self.server.use_dbus:
1713
# Emit D-Bus signal
1714
client.Rejected("Denied")
1715
return
1716
1717
#wait until timeout or approved
1718
time = datetime.datetime.now()
1719
client.changedstate.acquire()
1720
(client.changedstate.wait
1721
(float(client.timedelta_to_milliseconds(delay)
1722
/ 1000)))
1723
client.changedstate.release()
1724
time2 = datetime.datetime.now()
1725
if (time2 - time) >= delay:
1726
if not client.approved_by_default:
1727
logger.warning("Client %s timed out while"
1728
" waiting for approval",
1729
client.name)
1730
if self.server.use_dbus:
1731
# Emit D-Bus signal
1732
client.Rejected("Approval timed out")
1733
return
1734
else:
1735
break
1736
else:
1737
delay -= time2 - time
1738
1739
sent_size = 0
1740
while sent_size < len(client.secret):
1741
try:
1742
sent = session.send(client.secret[sent_size:])
1743
except gnutls.errors.GNUTLSError as error:
1744
logger.warning("gnutls send failed")
1745
return
1746
logger.debug("Sent: %d, remaining: %d",
1747
sent, len(client.secret)
1748
- (sent_size + sent))
1749
sent_size += sent
1750
1751
logger.info("Sending secret to %s", client.name)
1752
# bump the timeout using extended_timeout
1753
client.bump_timeout(client.extended_timeout)
1754
if self.server.use_dbus:
1755
# Emit D-Bus signal
1756
client.GotSecret()
978
fpr = self.fingerprint(self.peer_certificate(session))
979
except (TypeError, gnutls.errors.GNUTLSError), error:
980
logger.warning(u"Bad certificate: %s", error)
981
session.bye()
982
return
983
logger.debug(u"Fingerprint: %s", fpr)
1757
984
1758
finally:
1759
if approval_required:
1760
client.approvals_pending -= 1
1761
try:
1762
session.bye()
1763
except gnutls.errors.GNUTLSError as error:
1764
logger.warning("GnuTLS bye failed")
985
for c in self.server.clients:
986
if c.fingerprint == fpr:
987
client = c
988
break
989
else:
990
ipc.write(u"NOTFOUND %s %s\n"
991
% (fpr, unicode(self.client_address)))
992
session.bye()
993
return
994
# Have to check if client.still_valid(), since it is
995
# possible that the client timed out while establishing
996
# the GnuTLS session.
997
if not client.still_valid():
998
ipc.write(u"INVALID %s\n" % client.name)
999
session.bye()
1000
return
1001
ipc.write(u"SENDING %s\n" % client.name)
1002
sent_size = 0
1003
while sent_size < len(client.secret):
1004
sent = session.send(client.secret[sent_size:])
1005
logger.debug(u"Sent: %d, remaining: %d",
1006
sent, len(client.secret)
1007
- (sent_size + sent))
1008
sent_size += sent
1009
session.bye()
1765
1010
1766
1011
@staticmethod
1767
1012
def peer_certificate(session):
1777
1022
.gnutls_certificate_get_peers
1778
1023
(session._c_object, ctypes.byref(list_size)))
1779
1024
if not bool(cert_list) and list_size.value != 0:
1780
raise gnutls.errors.GNUTLSError("error getting peer"
1781
" certificate")
1025
raise gnutls.errors.GNUTLSError(u"error getting peer"
1026
u" certificate")
1782
1027
if list_size.value == 0:
1783
1028
return None
1784
1029
cert = cert_list[0]
1810
1055
if crtverify.value != 0:
1811
1056
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1812
1057
raise (gnutls.errors.CertificateSecurityError
1813
("Verify failed"))
1058
(u"Verify failed"))
1814
1059
# New buffer for the fingerprint
1815
1060
buf = ctypes.create_string_buffer(20)
1816
1061
buf_len = ctypes.c_size_t()
1823
1068
# Convert the buffer to a Python bytestring
1824
1069
fpr = ctypes.string_at(buf, buf_len.value)
1825
1070
# Convert the bytestring to hexadecimal notation
1826
hex_fpr = binascii.hexlify(fpr).upper()
1071
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1827
1072
return hex_fpr
1828
1073
1829
1074
1830
class MultiprocessingMixIn(object):
1831
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1832
def sub_process_main(self, request, address):
1833
try:
1834
self.finish_request(request, address)
1835
except Exception:
1836
self.handle_error(request, address)
1837
self.close_request(request)
1838
1839
def process_request(self, request, address):
1840
"""Start a new process to process the request."""
1841
proc = multiprocessing.Process(target = self.sub_process_main,
1842
args = (request,
1843
address))
1844
proc.start()
1845
return proc
1846
1847
1848
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1849
""" adds a pipe to the MixIn """
1075
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1076
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1850
1077
def process_request(self, request, client_address):
1851
1078
"""Overrides and wraps the original process_request().
1852
1079
1853
1080
This function creates a new pipe in self.pipe
1854
1081
"""
1855
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1856
1857
proc = MultiprocessingMixIn.process_request(self, request,
1858
client_address)
1859
self.child_pipe.close()
1860
self.add_pipe(parent_pipe, proc)
1861
1862
def add_pipe(self, parent_pipe, proc):
1082
self.pipe = os.pipe()
1083
super(ForkingMixInWithPipe,
1084
self).process_request(request, client_address)
1085
os.close(self.pipe[1]) # close write end
1086
self.add_pipe(self.pipe[0])
1087
def add_pipe(self, pipe):
1863
1088
"""Dummy function; override as necessary"""
1864
raise NotImplementedError
1865
1866
1867
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1089
os.close(pipe)
1090
1091
1092
class IPv6_TCPServer(ForkingMixInWithPipe,
1868
1093
socketserver.TCPServer, object):
1869
1094
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1870
1095
1886
1111
bind to an address or port if they were not specified."""
1887
1112
if self.interface is not None:
1888
1113
if SO_BINDTODEVICE is None:
1889
logger.error("SO_BINDTODEVICE does not exist;"
1890
" cannot bind to interface %s",
1114
logger.error(u"SO_BINDTODEVICE does not exist;"
1115
u" cannot bind to interface %s",
1891
1116
self.interface)
1892
1117
else:
1893
1118
try:
1894
1119
self.socket.setsockopt(socket.SOL_SOCKET,
1895
1120
SO_BINDTODEVICE,
1896
1121
str(self.interface
1897
+ '\0'))
1898
except socket.error as error:
1122
+ u'\0'))
1123
except socket.error, error:
1899
1124
if error[0] == errno.EPERM:
1900
logger.error("No permission to"
1901
" bind to interface %s",
1125
logger.error(u"No permission to"
1126
u" bind to interface %s",
1902
1127
self.interface)
1903
1128
elif error[0] == errno.ENOPROTOOPT:
1904
logger.error("SO_BINDTODEVICE not available;"
1905
" cannot bind to interface %s",
1129
logger.error(u"SO_BINDTODEVICE not available;"
1130
u" cannot bind to interface %s",
1906
1131
self.interface)
1907
1132
else:
1908
1133
raise
1910
1135
if self.server_address[0] or self.server_address[1]:
1911
1136
if not self.server_address[0]:
1912
1137
if self.address_family == socket.AF_INET6:
1913
any_address = "::" # in6addr_any
1138
any_address = u"::" # in6addr_any
1914
1139
else:
1915
1140
any_address = socket.INADDR_ANY
1916
1141
self.server_address = (any_address,
1943
1168
self.enabled = False
1944
1169
self.clients = clients
1945
1170
if self.clients is None:
1946
self.clients = {}
1171
self.clients = set()
1947
1172
self.use_dbus = use_dbus
1948
1173
self.gnutls_priority = gnutls_priority
1949
1174
IPv6_TCPServer.__init__(self, server_address,
1953
1178
def server_activate(self):
1954
1179
if self.enabled:
1955
1180
return socketserver.TCPServer.server_activate(self)
1956
1957
1181
def enable(self):
1958
1182
self.enabled = True
1959
1960
def add_pipe(self, parent_pipe, proc):
1183
def add_pipe(self, pipe):
1961
1184
# Call "handle_ipc" for both data and EOF events
1962
gobject.io_add_watch(parent_pipe.fileno(),
1963
gobject.IO_IN | gobject.IO_HUP,
1964
functools.partial(self.handle_ipc,
1965
parent_pipe =
1966
parent_pipe,
1967
proc = proc))
1968
1969
def handle_ipc(self, source, condition, parent_pipe=None,
1970
proc = None, client_object=None):
1185
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1186
self.handle_ipc)
1187
def handle_ipc(self, source, condition, file_objects={}):
1971
1188
condition_names = {
1972
gobject.IO_IN: "IN", # There is data to read.
1973
gobject.IO_OUT: "OUT", # Data can be written (without
1189
gobject.IO_IN: u"IN", # There is data to read.
1190
gobject.IO_OUT: u"OUT", # Data can be written (without
1974
1191
# blocking).
1975
gobject.IO_PRI: "PRI", # There is urgent data to read.
1976
gobject.IO_ERR: "ERR", # Error condition.
1977
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1192
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1193
gobject.IO_ERR: u"ERR", # Error condition.
1194
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1978
1195
# broken, usually for pipes and
1979
1196
# sockets).
1980
1197
}
1982
1199
for cond, name in
1983
1200
condition_names.iteritems()
1984
1201
if cond & condition)
1985
# error, or the other end of multiprocessing.Pipe has closed
1986
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1987
# Wait for other process to exit
1988
proc.join()
1989
return False
1990
1991
# Read a request from the child
1992
request = parent_pipe.recv()
1993
command = request[0]
1994
1995
if command == 'init':
1996
fpr = request[1]
1997
address = request[2]
1998
1999
for c in self.clients.itervalues():
2000
if c.fingerprint == fpr:
2001
client = c
2002
break
2003
else:
2004
logger.info("Client not found for fingerprint: %s, ad"
2005
"dress: %s", fpr, address)
2006
if self.use_dbus:
2007
# Emit D-Bus signal
2008
mandos_dbus_service.ClientNotFound(fpr,
2009
address[0])
2010
parent_pipe.send(False)
2011
return False
2012
2013
gobject.io_add_watch(parent_pipe.fileno(),
2014
gobject.IO_IN | gobject.IO_HUP,
2015
functools.partial(self.handle_ipc,
2016
parent_pipe =
2017
parent_pipe,
2018
proc = proc,
2019
client_object =
2020
client))
2021
parent_pipe.send(True)
2022
# remove the old hook in favor of the new above hook on
2023
# same fileno
2024
return False
2025
if command == 'funcall':
2026
funcname = request[1]
2027
args = request[2]
2028
kwargs = request[3]
2029
2030
parent_pipe.send(('data', getattr(client_object,
2031
funcname)(*args,
2032
**kwargs)))
2033
2034
if command == 'getattr':
2035
attrname = request[1]
2036
if callable(client_object.__getattribute__(attrname)):
2037
parent_pipe.send(('function',))
2038
else:
2039
parent_pipe.send(('data', client_object
2040
.__getattribute__(attrname)))
2041
2042
if command == 'setattr':
2043
attrname = request[1]
2044
value = request[2]
2045
setattr(client_object, attrname, value)
2046
1202
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1203
conditions_string)
1204
1205
# Turn the pipe file descriptor into a Python file object
1206
if source not in file_objects:
1207
file_objects[source] = os.fdopen(source, u"r", 1)
1208
1209
# Read a line from the file object
1210
cmdline = file_objects[source].readline()
1211
if not cmdline: # Empty line means end of file
1212
# close the IPC pipe
1213
file_objects[source].close()
1214
del file_objects[source]
1215
1216
# Stop calling this function
1217
return False
1218
1219
logger.debug(u"IPC command: %r", cmdline)
1220
1221
# Parse and act on command
1222
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1223
1224
if cmd == u"NOTFOUND":
1225
logger.warning(u"Client not found for fingerprint: %s",
1226
args)
1227
if self.use_dbus:
1228
# Emit D-Bus signal
1229
mandos_dbus_service.ClientNotFound(args)
1230
elif cmd == u"INVALID":
1231
for client in self.clients:
1232
if client.name == args:
1233
logger.warning(u"Client %s is invalid", args)
1234
if self.use_dbus:
1235
# Emit D-Bus signal
1236
client.Rejected()
1237
break
1238
else:
1239
logger.error(u"Unknown client %s is invalid", args)
1240
elif cmd == u"SENDING":
1241
for client in self.clients:
1242
if client.name == args:
1243
logger.info(u"Sending secret to %s", client.name)
1244
client.checked_ok()
1245
if self.use_dbus:
1246
# Emit D-Bus signal
1247
client.ReceivedSecret()
1248
break
1249
else:
1250
logger.error(u"Sending secret to unknown client %s",
1251
args)
1252
else:
1253
logger.error(u"Unknown IPC command: %r", cmdline)
1254
1255
# Keep calling this function
2047
1256
return True
2048
1257
2049
1258
2050
1259
def string_to_delta(interval):
2051
1260
"""Parse a string and return a datetime.timedelta
2052
1261
2053
>>> string_to_delta('7d')
1262
>>> string_to_delta(u'7d')
2054
1263
datetime.timedelta(7)
2055
>>> string_to_delta('60s')
1264
>>> string_to_delta(u'60s')
2056
1265
datetime.timedelta(0, 60)
2057
>>> string_to_delta('60m')
1266
>>> string_to_delta(u'60m')
2058
1267
datetime.timedelta(0, 3600)
2059
>>> string_to_delta('24h')
1268
>>> string_to_delta(u'24h')
2060
1269
datetime.timedelta(1)
2061
>>> string_to_delta('1w')
1270
>>> string_to_delta(u'1w')
2062
1271
datetime.timedelta(7)
2063
>>> string_to_delta('5m 30s')
1272
>>> string_to_delta(u'5m 30s')
2064
1273
datetime.timedelta(0, 330)
2065
1274
"""
2066
1275
timevalue = datetime.timedelta(0)
2068
1277
try:
2069
1278
suffix = unicode(s[-1])
2070
1279
value = int(s[:-1])
2071
if suffix == "d":
1280
if suffix == u"d":
2072
1281
delta = datetime.timedelta(value)
2073
elif suffix == "s":
1282
elif suffix == u"s":
2074
1283
delta = datetime.timedelta(0, value)
2075
elif suffix == "m":
1284
elif suffix == u"m":
2076
1285
delta = datetime.timedelta(0, 0, 0, 0, value)
2077
elif suffix == "h":
1286
elif suffix == u"h":
2078
1287
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2079
elif suffix == "w":
1288
elif suffix == u"w":
2080
1289
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2081
1290
else:
2082
raise ValueError("Unknown suffix %r" % suffix)
2083
except (ValueError, IndexError) as e:
2084
raise ValueError(*(e.args))
1291
raise ValueError
1292
except (ValueError, IndexError):
1293
raise ValueError
2085
1294
timevalue += delta
2086
1295
return timevalue
2087
1296
2088
1297
1298
def if_nametoindex(interface):
1299
"""Call the C function if_nametoindex(), or equivalent
1300
1301
Note: This function cannot accept a unicode string."""
1302
global if_nametoindex
1303
try:
1304
if_nametoindex = (ctypes.cdll.LoadLibrary
1305
(ctypes.util.find_library(u"c"))
1306
.if_nametoindex)
1307
except (OSError, AttributeError):
1308
logger.warning(u"Doing if_nametoindex the hard way")
1309
def if_nametoindex(interface):
1310
"Get an interface index the hard way, i.e. using fcntl()"
1311
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1312
with closing(socket.socket()) as s:
1313
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1314
struct.pack(str(u"16s16x"),
1315
interface))
1316
interface_index = struct.unpack(str(u"I"),
1317
ifreq[16:20])[0]
1318
return interface_index
1319
return if_nametoindex(interface)
1320
1321
2089
1322
def daemon(nochdir = False, noclose = False):
2090
1323
"""See daemon(3). Standard BSD Unix function.
2091
1324
2094
1327
sys.exit()
2095
1328
os.setsid()
2096
1329
if not nochdir:
2097
os.chdir("/")
1330
os.chdir(u"/")
2098
1331
if os.fork():
2099
1332
sys.exit()
2100
1333
if not noclose:
2101
1334
# Close all standard open file descriptors
2102
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1335
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2103
1336
if not stat.S_ISCHR(os.fstat(null).st_mode):
2104
1337
raise OSError(errno.ENODEV,
2105
"%s not a character device"
2106
% os.devnull)
1338
u"/dev/null not a character device")
2107
1339
os.dup2(null, sys.stdin.fileno())
2108
1340
os.dup2(null, sys.stdout.fileno())
2109
1341
os.dup2(null, sys.stderr.fileno())
2116
1348
##################################################################
2117
1349
# Parsing of options, both command line and config file
2118
1350
2119
parser = argparse.ArgumentParser()
2120
parser.add_argument("-v", "--version", action="version",
2121
version = "%%(prog)s %s" % version,
2122
help="show version number and exit")
2123
parser.add_argument("-i", "--interface", metavar="IF",
2124
help="Bind to interface IF")
2125
parser.add_argument("-a", "--address",
2126
help="Address to listen for requests on")
2127
parser.add_argument("-p", "--port", type=int,
2128
help="Port number to receive requests on")
2129
parser.add_argument("--check", action="store_true",
2130
help="Run self-test")
2131
parser.add_argument("--debug", action="store_true",
2132
help="Debug mode; run in foreground and log"
2133
" to terminal")
2134
parser.add_argument("--debuglevel", metavar="LEVEL",
2135
help="Debug level for stdout output")
2136
parser.add_argument("--priority", help="GnuTLS"
2137
" priority string (see GnuTLS documentation)")
2138
parser.add_argument("--servicename",
2139
metavar="NAME", help="Zeroconf service name")
2140
parser.add_argument("--configdir",
2141
default="/etc/mandos", metavar="DIR",
2142
help="Directory to search for configuration"
2143
" files")
2144
parser.add_argument("--no-dbus", action="store_false",
2145
dest="use_dbus", help="Do not provide D-Bus"
2146
" system bus interface")
2147
parser.add_argument("--no-ipv6", action="store_false",
2148
dest="use_ipv6", help="Do not use IPv6")
2149
parser.add_argument("--no-restore", action="store_false",
2150
dest="restore", help="Do not restore stored"
2151
" state")
2152
parser.add_argument("--statedir", metavar="DIR",
2153
help="Directory to save/restore state in")
2154
2155
options = parser.parse_args()
1351
parser = optparse.OptionParser(version = "%%prog %s" % version)
1352
parser.add_option("-i", u"--interface", type=u"string",
1353
metavar="IF", help=u"Bind to interface IF")
1354
parser.add_option("-a", u"--address", type=u"string",
1355
help=u"Address to listen for requests on")
1356
parser.add_option("-p", u"--port", type=u"int",
1357
help=u"Port number to receive requests on")
1358
parser.add_option("--check", action=u"store_true",
1359
help=u"Run self-test")
1360
parser.add_option("--debug", action=u"store_true",
1361
help=u"Debug mode; run in foreground and log to"
1362
u" terminal")
1363
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1364
u" priority string (see GnuTLS documentation)")
1365
parser.add_option("--servicename", type=u"string",
1366
metavar=u"NAME", help=u"Zeroconf service name")
1367
parser.add_option("--configdir", type=u"string",
1368
default=u"/etc/mandos", metavar=u"DIR",
1369
help=u"Directory to search for configuration"
1370
u" files")
1371
parser.add_option("--no-dbus", action=u"store_false",
1372
dest=u"use_dbus", help=u"Do not provide D-Bus"
1373
u" system bus interface")
1374
parser.add_option("--no-ipv6", action=u"store_false",
1375
dest=u"use_ipv6", help=u"Do not use IPv6")
1376
options = parser.parse_args()[0]
2156
1377
2157
1378
if options.check:
2158
1379
import doctest
2160
1381
sys.exit()
2161
1382
2162
1383
# Default values for config file for server-global settings
2163
server_defaults = { "interface": "",
2164
"address": "",
2165
"port": "",
2166
"debug": "False",
2167
"priority":
2168
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2169
"servicename": "Mandos",
2170
"use_dbus": "True",
2171
"use_ipv6": "True",
2172
"debuglevel": "",
2173
"restore": "True",
2174
"statedir": "/var/lib/mandos"
1384
server_defaults = { u"interface": u"",
1385
u"address": u"",
1386
u"port": u"",
1387
u"debug": u"False",
1388
u"priority":
1389
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1390
u"servicename": u"Mandos",
1391
u"use_dbus": u"True",
1392
u"use_ipv6": u"True",
2175
1393
}
2176
1394
2177
1395
# Parse config file for server-global settings
2178
1396
server_config = configparser.SafeConfigParser(server_defaults)
2179
1397
del server_defaults
2180
1398
server_config.read(os.path.join(options.configdir,
2181
"mandos.conf"))
1399
u"mandos.conf"))
2182
1400
# Convert the SafeConfigParser object to a dict
2183
1401
server_settings = server_config.defaults()
2184
1402
# Use the appropriate methods on the non-string config options
2185
for option in ("debug", "use_dbus", "use_ipv6"):
2186
server_settings[option] = server_config.getboolean("DEFAULT",
1403
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1404
server_settings[option] = server_config.getboolean(u"DEFAULT",
2187
1405
option)
2188
1406
if server_settings["port"]:
2189
server_settings["port"] = server_config.getint("DEFAULT",
2190
"port")
1407
server_settings["port"] = server_config.getint(u"DEFAULT",
1408
u"port")
2191
1409
del server_config
2192
1410
2193
1411
# Override the settings from the config file with command line
2194
1412
# options, if set.
2195
for option in ("interface", "address", "port", "debug",
2196
"priority", "servicename", "configdir",
2197
"use_dbus", "use_ipv6", "debuglevel", "restore",
2198
"statedir"):
1413
for option in (u"interface", u"address", u"port", u"debug",
1414
u"priority", u"servicename", u"configdir",
1415
u"use_dbus", u"use_ipv6"):
2199
1416
value = getattr(options, option)
2200
1417
if value is not None:
2201
1418
server_settings[option] = value
2209
1426
##################################################################
2210
1427
2211
1428
# For convenience
2212
debug = server_settings["debug"]
2213
debuglevel = server_settings["debuglevel"]
2214
use_dbus = server_settings["use_dbus"]
2215
use_ipv6 = server_settings["use_ipv6"]
2216
stored_state_path = os.path.join(server_settings["statedir"],
2217
stored_state_file)
2218
2219
if debug:
2220
initlogger(debug, logging.DEBUG)
2221
else:
2222
if not debuglevel:
2223
initlogger(debug)
2224
else:
2225
level = getattr(logging, debuglevel.upper())
2226
initlogger(debug, level)
2227
2228
if server_settings["servicename"] != "Mandos":
1429
debug = server_settings[u"debug"]
1430
use_dbus = server_settings[u"use_dbus"]
1431
use_ipv6 = server_settings[u"use_ipv6"]
1432
1433
if not debug:
1434
syslogger.setLevel(logging.WARNING)
1435
console.setLevel(logging.WARNING)
1436
1437
if server_settings[u"servicename"] != u"Mandos":
2229
1438
syslogger.setFormatter(logging.Formatter
2230
('Mandos (%s) [%%(process)d]:'
2231
' %%(levelname)s: %%(message)s'
2232
% server_settings["servicename"]))
1439
(u'Mandos (%s) [%%(process)d]:'
1440
u' %%(levelname)s: %%(message)s'
1441
% server_settings[u"servicename"]))
2233
1442
2234
1443
# Parse config file with clients
2235
client_config = configparser.SafeConfigParser(Client
2236
.client_defaults)
2237
client_config.read(os.path.join(server_settings["configdir"],
2238
"clients.conf"))
1444
client_defaults = { u"timeout": u"1h",
1445
u"interval": u"5m",
1446
u"checker": u"fping -q -- %%(host)s",
1447
u"host": u"",
1448
}
1449
client_config = configparser.SafeConfigParser(client_defaults)
1450
client_config.read(os.path.join(server_settings[u"configdir"],
1451
u"clients.conf"))
2239
1452
2240
1453
global mandos_dbus_service
2241
1454
mandos_dbus_service = None
2242
1455
2243
tcp_server = MandosServer((server_settings["address"],
2244
server_settings["port"]),
1456
tcp_server = MandosServer((server_settings[u"address"],
1457
server_settings[u"port"]),
2245
1458
ClientHandler,
2246
interface=(server_settings["interface"]
2247
or None),
1459
interface=server_settings[u"interface"],
2248
1460
use_ipv6=use_ipv6,
2249
1461
gnutls_priority=
2250
server_settings["priority"],
1462
server_settings[u"priority"],
2251
1463
use_dbus=use_dbus)
2252
if not debug:
2253
pidfilename = "/var/run/mandos.pid"
2254
try:
2255
pidfile = open(pidfilename, "w")
2256
except IOError:
2257
logger.error("Could not open file %r", pidfilename)
1464
pidfilename = u"/var/run/mandos.pid"
1465
try:
1466
pidfile = open(pidfilename, u"w")
1467
except IOError:
1468
logger.error(u"Could not open file %r", pidfilename)
2258
1469
2259
1470
try:
2260
uid = pwd.getpwnam("_mandos").pw_uid
2261
gid = pwd.getpwnam("_mandos").pw_gid
1471
uid = pwd.getpwnam(u"_mandos").pw_uid
1472
gid = pwd.getpwnam(u"_mandos").pw_gid
2262
1473
except KeyError:
2263
1474
try:
2264
uid = pwd.getpwnam("mandos").pw_uid
2265
gid = pwd.getpwnam("mandos").pw_gid
1475
uid = pwd.getpwnam(u"mandos").pw_uid
1476
gid = pwd.getpwnam(u"mandos").pw_gid
2266
1477
except KeyError:
2267
1478
try:
2268
uid = pwd.getpwnam("nobody").pw_uid
2269
gid = pwd.getpwnam("nobody").pw_gid
1479
uid = pwd.getpwnam(u"nobody").pw_uid
1480
gid = pwd.getpwnam(u"nobody").pw_gid
2270
1481
except KeyError:
2271
1482
uid = 65534
2272
1483
gid = 65534
2273
1484
try:
2274
1485
os.setgid(gid)
2275
1486
os.setuid(uid)
2276
except OSError as error:
1487
except OSError, error:
2277
1488
if error[0] != errno.EPERM:
2278
1489
raise error
2279
1490
1491
# Enable all possible GnuTLS debugging
2280
1492
if debug:
2281
# Enable all possible GnuTLS debugging
2282
2283
1493
# "Use a log level over 10 to enable all debugging options."
2284
1494
# - GnuTLS manual
2285
1495
gnutls.library.functions.gnutls_global_set_log_level(11)
2286
1496
2287
1497
@gnutls.library.types.gnutls_log_func
2288
1498
def debug_gnutls(level, string):
2289
logger.debug("GnuTLS: %s", string[:-1])
1499
logger.debug(u"GnuTLS: %s", string[:-1])
2290
1500
2291
1501
(gnutls.library.functions
2292
1502
.gnutls_global_set_log_function(debug_gnutls))
2293
2294
# Redirect stdin so all checkers get /dev/null
2295
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2296
os.dup2(null, sys.stdin.fileno())
2297
if null > 2:
2298
os.close(null)
2299
2300
# Need to fork before connecting to D-Bus
2301
if not debug:
2302
# Close all input and output, do double fork, etc.
2303
daemon()
2304
2305
gobject.threads_init()
2306
1503
2307
1504
global main_loop
2308
1505
# From the Avahi example code
2309
DBusGMainLoop(set_as_default=True)
1506
DBusGMainLoop(set_as_default=True )
2310
1507
main_loop = gobject.MainLoop()
2311
1508
bus = dbus.SystemBus()
2312
1509
# End of Avahi example code
2313
1510
if use_dbus:
2314
try:
2315
bus_name = dbus.service.BusName("se.recompile.Mandos",
2316
bus, do_not_queue=True)
2317
old_bus_name = (dbus.service.BusName
2318
("se.bsnet.fukt.Mandos", bus,
2319
do_not_queue=True))
2320
except dbus.exceptions.NameExistsException as e:
2321
logger.error(unicode(e) + ", disabling D-Bus")
2322
use_dbus = False
2323
server_settings["use_dbus"] = False
2324
tcp_server.use_dbus = False
1511
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2325
1512
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2326
service = AvahiServiceToSyslog(name =
2327
server_settings["servicename"],
2328
servicetype = "_mandos._tcp",
2329
protocol = protocol, bus = bus)
1513
service = AvahiService(name = server_settings[u"servicename"],
1514
servicetype = u"_mandos._tcp",
1515
protocol = protocol, bus = bus)
2330
1516
if server_settings["interface"]:
2331
1517
service.interface = (if_nametoindex
2332
(str(server_settings["interface"])))
2333
2334
global multiprocessing_manager
2335
multiprocessing_manager = multiprocessing.Manager()
1518
(str(server_settings[u"interface"])))
2336
1519
2337
1520
client_class = Client
2338
1521
if use_dbus:
2339
client_class = functools.partial(ClientDBusTransitional,
2340
bus = bus)
2341
2342
client_settings = Client.config_parser(client_config)
2343
old_client_settings = {}
2344
clients_data = {}
2345
2346
# Get client data and settings from last running state.
2347
if server_settings["restore"]:
2348
try:
2349
with open(stored_state_path, "rb") as stored_state:
2350
clients_data, old_client_settings = (pickle.load
2351
(stored_state))
2352
os.remove(stored_state_path)
2353
except IOError as e:
2354
logger.warning("Could not load persistent state: {0}"
2355
.format(e))
2356
if e.errno != errno.ENOENT:
2357
raise
2358
except EOFError as e:
2359
logger.warning("Could not load persistent state: "
2360
"EOFError: {0}".format(e))
2361
2362
with PGPEngine() as pgp:
2363
for client_name, client in clients_data.iteritems():
2364
# Decide which value to use after restoring saved state.
2365
# We have three different values: Old config file,
2366
# new config file, and saved state.
2367
# New config value takes precedence if it differs from old
2368
# config value, otherwise use saved state.
2369
for name, value in client_settings[client_name].items():
2370
try:
2371
# For each value in new config, check if it
2372
# differs from the old config value (Except for
2373
# the "secret" attribute)
2374
if (name != "secret" and
2375
value != old_client_settings[client_name]
2376
[name]):
2377
client[name] = value
2378
except KeyError:
2379
pass
2380
2381
# Clients who has passed its expire date can still be
2382
# enabled if its last checker was successful. Clients
2383
# whose checker succeeded before we stored its state is
2384
# assumed to have successfully run all checkers during
2385
# downtime.
2386
if client["enabled"]:
2387
if datetime.datetime.utcnow() >= client["expires"]:
2388
if not client["last_checked_ok"]:
2389
logger.warning(
2390
"disabling client {0} - Client never "
2391
"performed a successful checker"
2392
.format(client_name))
2393
client["enabled"] = False
2394
elif client["last_checker_status"] != 0:
2395
logger.warning(
2396
"disabling client {0} - Client "
2397
"last checker failed with error code {1}"
2398
.format(client_name,
2399
client["last_checker_status"]))
2400
client["enabled"] = False
2401
else:
2402
client["expires"] = (datetime.datetime
2403
.utcnow()
2404
+ client["timeout"])
2405
logger.debug("Last checker succeeded,"
2406
" keeping {0} enabled"
2407
.format(client_name))
2408
try:
2409
client["secret"] = (
2410
pgp.decrypt(client["encrypted_secret"],
2411
client_settings[client_name]
2412
["secret"]))
2413
except PGPError:
2414
# If decryption fails, we use secret from new settings
2415
logger.debug("Failed to decrypt {0} old secret"
2416
.format(client_name))
2417
client["secret"] = (
2418
client_settings[client_name]["secret"])
2419
2420
2421
# Add/remove clients based on new changes made to config
2422
for client_name in (set(old_client_settings)
2423
- set(client_settings)):
2424
del clients_data[client_name]
2425
for client_name in (set(client_settings)
2426
- set(old_client_settings)):
2427
clients_data[client_name] = client_settings[client_name]
2428
2429
# Create all client objects
2430
for client_name, client in clients_data.iteritems():
2431
tcp_server.clients[client_name] = client_class(
2432
name = client_name, settings = client)
2433
1522
client_class = functools.partial(ClientDBus, bus = bus)
1523
tcp_server.clients.update(set(
1524
client_class(name = section,
1525
config= dict(client_config.items(section)))
1526
for section in client_config.sections()))
2434
1527
if not tcp_server.clients:
2435
logger.warning("No clients defined")
1528
logger.warning(u"No clients defined")
1529
1530
if debug:
1531
# Redirect stdin so all checkers get /dev/null
1532
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1533
os.dup2(null, sys.stdin.fileno())
1534
if null > 2:
1535
os.close(null)
1536
else:
1537
# No console logging
1538
logger.removeHandler(console)
1539
# Close all input and output, do double fork, etc.
1540
daemon()
1541
1542
try:
1543
with closing(pidfile):
1544
pid = os.getpid()
1545
pidfile.write(str(pid) + "\n")
1546
del pidfile
1547
except IOError:
1548
logger.error(u"Could not write to file %r with PID %d",
1549
pidfilename, pid)
1550
except NameError:
1551
# "pidfile" was never created
1552
pass
1553
del pidfilename
1554
1555
def cleanup():
1556
"Cleanup function; run on exit"
1557
service.cleanup()
2436
1558
1559
while tcp_server.clients:
1560
client = tcp_server.clients.pop()
1561
client.disable_hook = None
1562
client.disable()
1563
1564
atexit.register(cleanup)
1565
2437
1566
if not debug:
2438
try:
2439
with pidfile:
2440
pid = os.getpid()
2441
pidfile.write(str(pid) + "\n".encode("utf-8"))
2442
del pidfile
2443
except IOError:
2444
logger.error("Could not write to file %r with PID %d",
2445
pidfilename, pid)
2446
except NameError:
2447
# "pidfile" was never created
2448
pass
2449
del pidfilename
2450
1567
signal.signal(signal.SIGINT, signal.SIG_IGN)
2451
2452
1568
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2453
1569
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2454
1570
2455
1571
if use_dbus:
2456
class MandosDBusService(DBusObjectWithProperties):
1572
class MandosDBusService(dbus.service.Object):
2457
1573
"""A D-Bus proxy object"""
2458
1574
def __init__(self):
2459
dbus.service.Object.__init__(self, bus, "/")
2460
_interface = "se.recompile.Mandos"
2461
2462
@dbus_interface_annotations(_interface)
2463
def _foo(self):
2464
return { "org.freedesktop.DBus.Property"
2465
".EmitsChangedSignal":
2466
"false"}
2467
2468
@dbus.service.signal(_interface, signature="o")
2469
def ClientAdded(self, objpath):
2470
"D-Bus signal"
2471
pass
2472
2473
@dbus.service.signal(_interface, signature="ss")
2474
def ClientNotFound(self, fingerprint, address):
2475
"D-Bus signal"
2476
pass
2477
2478
@dbus.service.signal(_interface, signature="os")
1575
dbus.service.Object.__init__(self, bus, u"/")
1576
_interface = u"se.bsnet.fukt.Mandos"
1577
1578
@dbus.service.signal(_interface, signature=u"oa{sv}")
1579
def ClientAdded(self, objpath, properties):
1580
"D-Bus signal"
1581
pass
1582
1583
@dbus.service.signal(_interface, signature=u"s")
1584
def ClientNotFound(self, fingerprint):
1585
"D-Bus signal"
1586
pass
1587
1588
@dbus.service.signal(_interface, signature=u"os")
2479
1589
def ClientRemoved(self, objpath, name):
2480
1590
"D-Bus signal"
2481
1591
pass
2482
1592
2483
@dbus.service.method(_interface, out_signature="ao")
1593
@dbus.service.method(_interface, out_signature=u"ao")
2484
1594
def GetAllClients(self):
2485
1595
"D-Bus method"
2486
1596
return dbus.Array(c.dbus_object_path
2487
for c in
2488
tcp_server.clients.itervalues())
1597
for c in tcp_server.clients)
2489
1598
2490
1599
@dbus.service.method(_interface,
2491
out_signature="a{oa{sv}}")
1600
out_signature=u"a{oa{sv}}")
2492
1601
def GetAllClientsWithProperties(self):
2493
1602
"D-Bus method"
2494
1603
return dbus.Dictionary(
2495
((c.dbus_object_path, c.GetAll(""))
2496
for c in tcp_server.clients.itervalues()),
2497
signature="oa{sv}")
1604
((c.dbus_object_path, c.GetAll(u""))
1605
for c in tcp_server.clients),
1606
signature=u"oa{sv}")
2498
1607
2499
@dbus.service.method(_interface, in_signature="o")
1608
@dbus.service.method(_interface, in_signature=u"o")
2500
1609
def RemoveClient(self, object_path):
2501
1610
"D-Bus method"
2502
for c in tcp_server.clients.itervalues():
1611
for c in tcp_server.clients:
2503
1612
if c.dbus_object_path == object_path:
2504
del tcp_server.clients[c.name]
1613
tcp_server.clients.remove(c)
2505
1614
c.remove_from_connection()
2506
1615
# Don't signal anything except ClientRemoved
2507
c.disable(quiet=True)
1616
c.disable(signal=False)
2508
1617
# Emit D-Bus signal
2509
1618
self.ClientRemoved(object_path, c.name)
2510
1619
return
2511
raise KeyError(object_path)
1620
raise KeyError
2512
1621
2513
1622
del _interface
2514
1623
2515
class MandosDBusServiceTransitional(MandosDBusService):
2516
__metaclass__ = AlternateDBusNamesMetaclass
2517
mandos_dbus_service = MandosDBusServiceTransitional()
2518
2519
def cleanup():
2520
"Cleanup function; run on exit"
2521
service.cleanup()
2522
2523
multiprocessing.active_children()
2524
if not (tcp_server.clients or client_settings):
2525
return
2526
2527
# Store client before exiting. Secrets are encrypted with key
2528
# based on what config file has. If config file is
2529
# removed/edited, old secret will thus be unrecovable.
2530
clients = {}
2531
with PGPEngine() as pgp:
2532
for client in tcp_server.clients.itervalues():
2533
key = client_settings[client.name]["secret"]
2534
client.encrypted_secret = pgp.encrypt(client.secret,
2535
key)
2536
client_dict = {}
2537
2538
# A list of attributes that can not be pickled
2539
# + secret.
2540
exclude = set(("bus", "changedstate", "secret",
2541
"checker"))
2542
for name, typ in (inspect.getmembers
2543
(dbus.service.Object)):
2544
exclude.add(name)
2545
2546
client_dict["encrypted_secret"] = (client
2547
.encrypted_secret)
2548
for attr in client.client_structure:
2549
if attr not in exclude:
2550
client_dict[attr] = getattr(client, attr)
2551
2552
clients[client.name] = client_dict
2553
del client_settings[client.name]["secret"]
2554
2555
try:
2556
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2557
prefix="clients-",
2558
dir=os.path.dirname
2559
(stored_state_path))
2560
with os.fdopen(tempfd, "wb") as stored_state:
2561
pickle.dump((clients, client_settings), stored_state)
2562
os.rename(tempname, stored_state_path)
2563
except (IOError, OSError) as e:
2564
logger.warning("Could not save persistent state: {0}"
2565
.format(e))
2566
if not debug:
2567
try:
2568
os.remove(tempname)
2569
except NameError:
2570
pass
2571
if e.errno not in set((errno.ENOENT, errno.EACCES,
2572
errno.EEXIST)):
2573
raise e
2574
2575
# Delete all clients, and settings from config
2576
while tcp_server.clients:
2577
name, client = tcp_server.clients.popitem()
2578
if use_dbus:
2579
client.remove_from_connection()
2580
# Don't signal anything except ClientRemoved
2581
client.disable(quiet=True)
2582
if use_dbus:
2583
# Emit D-Bus signal
2584
mandos_dbus_service.ClientRemoved(client
2585
.dbus_object_path,
2586
client.name)
2587
client_settings.clear()
2588
2589
atexit.register(cleanup)
2590
2591
for client in tcp_server.clients.itervalues():
1624
mandos_dbus_service = MandosDBusService()
1625
1626
for client in tcp_server.clients:
2592
1627
if use_dbus:
2593
1628
# Emit D-Bus signal
2594
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2595
# Need to initiate checking of clients
2596
if client.enabled:
2597
client.init_checker()
1629
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1630
client.GetAll(u""))
1631
client.enable()
2598
1632
2599
1633
tcp_server.enable()
2600
1634
tcp_server.server_activate()
2602
1636
# Find out what port we got
2603
1637
service.port = tcp_server.socket.getsockname()[1]
2604
1638
if use_ipv6:
2605
logger.info("Now listening on address %r, port %d,"
1639
logger.info(u"Now listening on address %r, port %d,"
2606
1640
" flowinfo %d, scope_id %d"
2607
1641
% tcp_server.socket.getsockname())
2608
1642
else: # IPv4
2609
logger.info("Now listening on address %r, port %d"
1643
logger.info(u"Now listening on address %r, port %d"
2610
1644
% tcp_server.socket.getsockname())
2611
1645
2612
1646
#service.interface = tcp_server.socket.getsockname()[3]
2615
1649
# From the Avahi example code
2616
1650
try:
2617
1651
service.activate()
2618
except dbus.exceptions.DBusException as error:
2619
logger.critical("DBusException: %s", error)
2620
cleanup()
1652
except dbus.exceptions.DBusException, error:
1653
logger.critical(u"DBusException: %s", error)
2621
1654
sys.exit(1)
2622
1655
# End of Avahi example code
2623
1656
2626
1659
(tcp_server.handle_request
2627
1660
(*args[2:], **kwargs) or True))
2628
1661
2629
logger.debug("Starting main loop")
1662
logger.debug(u"Starting main loop")
2630
1663
main_loop.run()
2631
except AvahiError as error:
2632
logger.critical("AvahiError: %s", error)
2633
cleanup()
1664
except AvahiError, error:
1665
logger.critical(u"AvahiError: %s", error)
2634
1666
sys.exit(1)
2635
1667
except KeyboardInterrupt:
2636
1668
if debug:
2637
print("", file=sys.stderr)
2638
logger.debug("Server received KeyboardInterrupt")
2639
logger.debug("Server exiting")
2640
# Must run before the D-Bus bus name gets deregistered
2641
cleanup()
1669
print >> sys.stderr
1670
logger.debug(u"Server received KeyboardInterrupt")
1671
logger.debug(u"Server exiting")
2642
1672
2643
1673
if __name__ == '__main__':
2644
1674
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0