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- Committer: teddy at bsnet
- Date: 2010-08-16 19:00:59 UTC
- mto: (237.2.183 mandos-local)
- mto: This revision was merged to the branch mainline in revision 270.
- Revision ID: teddy@fukt.bsnet.se-20100816190059-69vvi27up95cgbbl
* Makefile (run-server, run-client): Add notices about harmless error
messages.
messages.
- 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 © 2008-2013 Teddy Hogeborn
15
# Copyright © 2008-2013 Björn Påhlsson
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@recompile.se>.
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# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
from future_builtins import *
34
from __future__ import division, with_statement, absolute_import
38
35
39
36
import SocketServer as socketserver
40
37
import socket
41
import argparse
38
import optparse
42
39
import datetime
43
40
import errno
44
41
import gnutls.crypto
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55
import logging
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import logging.handlers
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import pwd
61
import contextlib
58
from contextlib import closing
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import struct
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import fcntl
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import functools
65
import cPickle as pickle
66
import multiprocessing
67
import types
68
import binascii
69
import tempfile
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import itertools
71
import collections
72
62
73
63
import dbus
74
64
import dbus.service
77
67
from dbus.mainloop.glib import DBusGMainLoop
78
68
import ctypes
79
69
import ctypes.util
80
import xml.dom.minidom
81
import inspect
82
70
83
71
try:
84
72
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
88
76
except ImportError:
89
77
SO_BINDTODEVICE = None
90
78
91
version = "1.6.2"
92
stored_state_file = "clients.pickle"
93
94
logger = logging.getLogger()
79
80
version = "1.0.14"
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logger = logging.Logger(u'mandos')
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83
syslogger = (logging.handlers.SysLogHandler
96
84
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
97
address = str("/dev/log")))
98
99
try:
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
103
except (OSError, AttributeError):
104
def if_nametoindex(interface):
105
"Get an interface index the hard way, i.e. using fcntl()"
106
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
107
with contextlib.closing(socket.socket()) as s:
108
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
113
return interface_index
114
115
116
def initlogger(debug, level=logging.WARNING):
117
"""init logger and add loglevel"""
118
119
syslogger.setFormatter(logging.Formatter
120
('Mandos [%(process)d]: %(levelname)s:'
121
' %(message)s'))
122
logger.addHandler(syslogger)
123
124
if debug:
125
console = logging.StreamHandler()
126
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
127
' [%(process)d]:'
128
' %(levelname)s:'
129
' %(message)s'))
130
logger.addHandler(console)
131
logger.setLevel(level)
132
133
134
class PGPError(Exception):
135
"""Exception if encryption/decryption fails"""
136
pass
137
138
139
class PGPEngine(object):
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"""A simple class for OpenPGP symmetric encryption & decryption"""
141
def __init__(self):
142
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
143
self.gnupgargs = ['--batch',
144
'--home', self.tempdir,
145
'--force-mdc',
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'--quiet',
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'--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
encoded = b"mandos" + binascii.hexlify(password)
176
if len(encoded) > 2048:
177
# GnuPG can't handle long passwords, so encode differently
178
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
179
.replace(b"\n", b"\\n")
180
.replace(b"\0", b"\\x00"))
181
return encoded
182
183
def encrypt(self, data, password):
184
passphrase = self.password_encode(password)
185
with tempfile.NamedTemporaryFile(dir=self.tempdir
186
) as passfile:
187
passfile.write(passphrase)
188
passfile.flush()
189
proc = subprocess.Popen(['gpg', '--symmetric',
190
'--passphrase-file',
191
passfile.name]
192
+ self.gnupgargs,
193
stdin = subprocess.PIPE,
194
stdout = subprocess.PIPE,
195
stderr = subprocess.PIPE)
196
ciphertext, err = proc.communicate(input = data)
197
if proc.returncode != 0:
198
raise PGPError(err)
199
return ciphertext
200
201
def decrypt(self, data, password):
202
passphrase = self.password_encode(password)
203
with tempfile.NamedTemporaryFile(dir = self.tempdir
204
) as passfile:
205
passfile.write(passphrase)
206
passfile.flush()
207
proc = subprocess.Popen(['gpg', '--decrypt',
208
'--passphrase-file',
209
passfile.name]
210
+ self.gnupgargs,
211
stdin = subprocess.PIPE,
212
stdout = subprocess.PIPE,
213
stderr = subprocess.PIPE)
214
decrypted_plaintext, err = proc.communicate(input
215
= data)
216
if proc.returncode != 0:
217
raise PGPError(err)
218
return decrypted_plaintext
219
85
address = "/dev/log"))
86
syslogger.setFormatter(logging.Formatter
87
(u'Mandos [%(process)d]: %(levelname)s:'
88
u' %(message)s'))
89
logger.addHandler(syslogger)
90
91
console = logging.StreamHandler()
92
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
93
u' %(levelname)s:'
94
u' %(message)s'))
95
logger.addHandler(console)
220
96
221
97
class AvahiError(Exception):
222
98
def __init__(self, value, *args, **kwargs):
238
114
Attributes:
239
115
interface: integer; avahi.IF_UNSPEC or an interface index.
240
116
Used to optionally bind to the specified interface.
241
name: string; Example: 'Mandos'
242
type: string; Example: '_mandos._tcp'.
243
See <https://www.iana.org/assignments/service-names-port-numbers>
117
name: string; Example: u'Mandos'
118
type: string; Example: u'_mandos._tcp'.
119
See <http://www.dns-sd.org/ServiceTypes.html>
244
120
port: integer; what port to announce
245
121
TXT: list of strings; TXT record for the service
246
122
domain: string; Domain to publish on, default to .local if empty.
252
128
server: D-Bus Server
253
129
bus: dbus.SystemBus()
254
130
"""
255
256
131
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
257
132
servicetype = None, port = None, TXT = None,
258
domain = "", host = "", max_renames = 32768,
133
domain = u"", host = u"", max_renames = 32768,
259
134
protocol = avahi.PROTO_UNSPEC, bus = None):
260
135
self.interface = interface
261
136
self.name = name
270
145
self.group = None # our entry group
271
146
self.server = None
272
147
self.bus = bus
273
self.entry_group_state_changed_match = None
274
275
148
def rename(self):
276
149
"""Derived from the Avahi example code"""
277
150
if self.rename_count >= self.max_renames:
278
logger.critical("No suitable Zeroconf service name found"
279
" after %i retries, exiting.",
151
logger.critical(u"No suitable Zeroconf service name found"
152
u" after %i retries, exiting.",
280
153
self.rename_count)
281
raise AvahiServiceError("Too many renames")
282
self.name = unicode(self.server
283
.GetAlternativeServiceName(self.name))
284
logger.info("Changing Zeroconf service name to %r ...",
285
self.name)
154
raise AvahiServiceError(u"Too many renames")
155
self.name = self.server.GetAlternativeServiceName(self.name)
156
logger.info(u"Changing Zeroconf service name to %r ...",
157
unicode(self.name))
158
syslogger.setFormatter(logging.Formatter
159
(u'Mandos (%s) [%%(process)d]:'
160
u' %%(levelname)s: %%(message)s'
161
% self.name))
286
162
self.remove()
287
try:
288
self.add()
289
except dbus.exceptions.DBusException as error:
290
logger.critical("D-Bus Exception", exc_info=error)
291
self.cleanup()
292
os._exit(1)
163
self.add()
293
164
self.rename_count += 1
294
295
165
def remove(self):
296
166
"""Derived from the Avahi example code"""
297
if self.entry_group_state_changed_match is not None:
298
self.entry_group_state_changed_match.remove()
299
self.entry_group_state_changed_match = None
300
167
if self.group is not None:
301
168
self.group.Reset()
302
303
169
def add(self):
304
170
"""Derived from the Avahi example code"""
305
self.remove()
306
171
if self.group is None:
307
172
self.group = dbus.Interface(
308
173
self.bus.get_object(avahi.DBUS_NAME,
309
174
self.server.EntryGroupNew()),
310
175
avahi.DBUS_INTERFACE_ENTRY_GROUP)
311
self.entry_group_state_changed_match = (
312
self.group.connect_to_signal(
313
'StateChanged', self.entry_group_state_changed))
314
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
176
self.group.connect_to_signal('StateChanged',
177
self.entry_group_state_changed)
178
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
315
179
self.name, self.type)
316
180
self.group.AddService(
317
181
self.interface,
322
186
dbus.UInt16(self.port),
323
187
avahi.string_array_to_txt_array(self.TXT))
324
188
self.group.Commit()
325
326
189
def entry_group_state_changed(self, state, error):
327
190
"""Derived from the Avahi example code"""
328
logger.debug("Avahi entry group state change: %i", state)
191
logger.debug(u"Avahi state change: %i", state)
329
192
330
193
if state == avahi.ENTRY_GROUP_ESTABLISHED:
331
logger.debug("Zeroconf service established.")
194
logger.debug(u"Zeroconf service established.")
332
195
elif state == avahi.ENTRY_GROUP_COLLISION:
333
logger.info("Zeroconf service name collision.")
196
logger.warning(u"Zeroconf service name collision.")
334
197
self.rename()
335
198
elif state == avahi.ENTRY_GROUP_FAILURE:
336
logger.critical("Avahi: Error in group state changed %s",
199
logger.critical(u"Avahi: Error in group state changed %s",
337
200
unicode(error))
338
raise AvahiGroupError("State changed: {0!s}"
339
.format(error))
340
201
raise AvahiGroupError(u"State changed: %s"
202
% unicode(error))
341
203
def cleanup(self):
342
204
"""Derived from the Avahi example code"""
343
205
if self.group is not None:
344
try:
345
self.group.Free()
346
except (dbus.exceptions.UnknownMethodException,
347
dbus.exceptions.DBusException):
348
pass
206
self.group.Free()
349
207
self.group = None
350
self.remove()
351
352
def server_state_changed(self, state, error=None):
208
def server_state_changed(self, state):
353
209
"""Derived from the Avahi example code"""
354
logger.debug("Avahi server state change: %i", state)
355
bad_states = { avahi.SERVER_INVALID:
356
"Zeroconf server invalid",
357
avahi.SERVER_REGISTERING: None,
358
avahi.SERVER_COLLISION:
359
"Zeroconf server name collision",
360
avahi.SERVER_FAILURE:
361
"Zeroconf server failure" }
362
if state in bad_states:
363
if bad_states[state] is not None:
364
if error is None:
365
logger.error(bad_states[state])
366
else:
367
logger.error(bad_states[state] + ": %r", error)
368
self.cleanup()
210
if state == avahi.SERVER_COLLISION:
211
logger.error(u"Zeroconf server name collision")
212
self.remove()
369
213
elif state == avahi.SERVER_RUNNING:
370
214
self.add()
371
else:
372
if error is None:
373
logger.debug("Unknown state: %r", state)
374
else:
375
logger.debug("Unknown state: %r: %r", state, error)
376
377
215
def activate(self):
378
216
"""Derived from the Avahi example code"""
379
217
if self.server is None:
380
218
self.server = dbus.Interface(
381
219
self.bus.get_object(avahi.DBUS_NAME,
382
avahi.DBUS_PATH_SERVER,
383
follow_name_owner_changes=True),
220
avahi.DBUS_PATH_SERVER),
384
221
avahi.DBUS_INTERFACE_SERVER)
385
self.server.connect_to_signal("StateChanged",
222
self.server.connect_to_signal(u"StateChanged",
386
223
self.server_state_changed)
387
224
self.server_state_changed(self.server.GetState())
388
225
389
226
390
class AvahiServiceToSyslog(AvahiService):
391
def rename(self):
392
"""Add the new name to the syslog messages"""
393
ret = AvahiService.rename(self)
394
syslogger.setFormatter(logging.Formatter
395
('Mandos ({0}) [%(process)d]:'
396
' %(levelname)s: %(message)s'
397
.format(self.name)))
398
return ret
399
400
401
def timedelta_to_milliseconds(td):
402
"Convert a datetime.timedelta() to milliseconds"
403
return ((td.days * 24 * 60 * 60 * 1000)
404
+ (td.seconds * 1000)
405
+ (td.microseconds // 1000))
406
407
408
227
class Client(object):
409
228
"""A representation of a client host served by this server.
410
229
411
230
Attributes:
412
approved: bool(); 'None' if not yet approved/disapproved
413
approval_delay: datetime.timedelta(); Time to wait for approval
414
approval_duration: datetime.timedelta(); Duration of one approval
231
name: string; from the config file, used in log messages and
232
D-Bus identifiers
233
fingerprint: string (40 or 32 hexadecimal digits); used to
234
uniquely identify the client
235
secret: bytestring; sent verbatim (over TLS) to client
236
host: string; available for use by the checker command
237
created: datetime.datetime(); (UTC) object creation
238
last_enabled: datetime.datetime(); (UTC)
239
enabled: bool()
240
last_checked_ok: datetime.datetime(); (UTC) or None
241
timeout: datetime.timedelta(); How long from last_checked_ok
242
until this client is invalid
243
interval: datetime.timedelta(); How often to start a new checker
244
disable_hook: If set, called by disable() as disable_hook(self)
415
245
checker: subprocess.Popen(); a running checker process used
416
246
to see if the client lives.
417
247
'None' if no process is running.
418
checker_callback_tag: a gobject event source tag, or None
419
checker_command: string; External command which is run to check
420
if client lives. %() expansions are done at
248
checker_initiator_tag: a gobject event source tag, or None
249
disable_initiator_tag: - '' -
250
checker_callback_tag: - '' -
251
checker_command: string; External command which is run to check if
252
client lives. %() expansions are done at
421
253
runtime with vars(self) as dict, so that for
422
254
instance %(name)s can be used in the command.
423
checker_initiator_tag: a gobject event source tag, or None
424
created: datetime.datetime(); (UTC) object creation
425
client_structure: Object describing what attributes a client has
426
and is used for storing the client at exit
427
255
current_checker_command: string; current running checker_command
428
disable_initiator_tag: a gobject event source tag, or None
429
enabled: bool()
430
fingerprint: string (40 or 32 hexadecimal digits); used to
431
uniquely identify the client
432
host: string; available for use by the checker command
433
interval: datetime.timedelta(); How often to start a new checker
434
last_approval_request: datetime.datetime(); (UTC) or None
435
last_checked_ok: datetime.datetime(); (UTC) or None
436
last_checker_status: integer between 0 and 255 reflecting exit
437
status of last checker. -1 reflects crashed
438
checker, -2 means no checker completed yet.
439
last_enabled: datetime.datetime(); (UTC) or None
440
name: string; from the config file, used in log messages and
441
D-Bus identifiers
442
secret: bytestring; sent verbatim (over TLS) to client
443
timeout: datetime.timedelta(); How long from last_checked_ok
444
until this client is disabled
445
extended_timeout: extra long timeout when secret has been sent
446
runtime_expansions: Allowed attributes for runtime expansion.
447
expires: datetime.datetime(); time (UTC) when a client will be
448
disabled, or None
449
server_settings: The server_settings dict from main()
450
256
"""
451
257
452
runtime_expansions = ("approval_delay", "approval_duration",
453
"created", "enabled", "expires",
454
"fingerprint", "host", "interval",
455
"last_approval_request", "last_checked_ok",
456
"last_enabled", "name", "timeout")
457
client_defaults = { "timeout": "PT5M",
458
"extended_timeout": "PT15M",
459
"interval": "PT2M",
460
"checker": "fping -q -- %%(host)s",
461
"host": "",
462
"approval_delay": "PT0S",
463
"approval_duration": "PT1S",
464
"approved_by_default": "True",
465
"enabled": "True",
466
}
258
@staticmethod
259
def _datetime_to_milliseconds(dt):
260
"Convert a datetime.datetime() to milliseconds"
261
return ((dt.days * 24 * 60 * 60 * 1000)
262
+ (dt.seconds * 1000)
263
+ (dt.microseconds // 1000))
467
264
468
265
def timeout_milliseconds(self):
469
266
"Return the 'timeout' attribute in milliseconds"
470
return timedelta_to_milliseconds(self.timeout)
471
472
def extended_timeout_milliseconds(self):
473
"Return the 'extended_timeout' attribute in milliseconds"
474
return timedelta_to_milliseconds(self.extended_timeout)
267
return self._datetime_to_milliseconds(self.timeout)
475
268
476
269
def interval_milliseconds(self):
477
270
"Return the 'interval' attribute in milliseconds"
478
return timedelta_to_milliseconds(self.interval)
479
480
def approval_delay_milliseconds(self):
481
return timedelta_to_milliseconds(self.approval_delay)
482
483
@staticmethod
484
def config_parser(config):
485
"""Construct a new dict of client settings of this form:
486
{ client_name: {setting_name: value, ...}, ...}
487
with exceptions for any special settings as defined above.
488
NOTE: Must be a pure function. Must return the same result
489
value given the same arguments.
490
"""
491
settings = {}
492
for client_name in config.sections():
493
section = dict(config.items(client_name))
494
client = settings[client_name] = {}
495
496
client["host"] = section["host"]
497
# Reformat values from string types to Python types
498
client["approved_by_default"] = config.getboolean(
499
client_name, "approved_by_default")
500
client["enabled"] = config.getboolean(client_name,
501
"enabled")
502
503
client["fingerprint"] = (section["fingerprint"].upper()
504
.replace(" ", ""))
505
if "secret" in section:
506
client["secret"] = section["secret"].decode("base64")
507
elif "secfile" in section:
508
with open(os.path.expanduser(os.path.expandvars
509
(section["secfile"])),
510
"rb") as secfile:
511
client["secret"] = secfile.read()
512
else:
513
raise TypeError("No secret or secfile for section {0}"
514
.format(section))
515
client["timeout"] = string_to_delta(section["timeout"])
516
client["extended_timeout"] = string_to_delta(
517
section["extended_timeout"])
518
client["interval"] = string_to_delta(section["interval"])
519
client["approval_delay"] = string_to_delta(
520
section["approval_delay"])
521
client["approval_duration"] = string_to_delta(
522
section["approval_duration"])
523
client["checker_command"] = section["checker"]
524
client["last_approval_request"] = None
525
client["last_checked_ok"] = None
526
client["last_checker_status"] = -2
527
528
return settings
529
530
def __init__(self, settings, name = None, server_settings=None):
271
return self._datetime_to_milliseconds(self.interval)
272
273
def __init__(self, name = None, disable_hook=None, config=None):
274
"""Note: the 'checker' key in 'config' sets the
275
'checker_command' attribute and *not* the 'checker'
276
attribute."""
531
277
self.name = name
532
if server_settings is None:
533
server_settings = {}
534
self.server_settings = server_settings
535
# adding all client settings
536
for setting, value in settings.iteritems():
537
setattr(self, setting, value)
538
539
if self.enabled:
540
if not hasattr(self, "last_enabled"):
541
self.last_enabled = datetime.datetime.utcnow()
542
if not hasattr(self, "expires"):
543
self.expires = (datetime.datetime.utcnow()
544
+ self.timeout)
545
else:
546
self.last_enabled = None
547
self.expires = None
548
549
logger.debug("Creating client %r", self.name)
278
if config is None:
279
config = {}
280
logger.debug(u"Creating client %r", self.name)
550
281
# Uppercase and remove spaces from fingerprint for later
551
282
# comparison purposes with return value from the fingerprint()
552
283
# function
553
logger.debug(" Fingerprint: %s", self.fingerprint)
554
self.created = settings.get("created",
555
datetime.datetime.utcnow())
556
557
# attributes specific for this server instance
284
self.fingerprint = (config[u"fingerprint"].upper()
285
.replace(u" ", u""))
286
logger.debug(u" Fingerprint: %s", self.fingerprint)
287
if u"secret" in config:
288
self.secret = config[u"secret"].decode(u"base64")
289
elif u"secfile" in config:
290
with closing(open(os.path.expanduser
291
(os.path.expandvars
292
(config[u"secfile"])))) as secfile:
293
self.secret = secfile.read()
294
else:
295
raise TypeError(u"No secret or secfile for client %s"
296
% self.name)
297
self.host = config.get(u"host", u"")
298
self.created = datetime.datetime.utcnow()
299
self.enabled = False
300
self.last_enabled = None
301
self.last_checked_ok = None
302
self.timeout = string_to_delta(config[u"timeout"])
303
self.interval = string_to_delta(config[u"interval"])
304
self.disable_hook = disable_hook
558
305
self.checker = None
559
306
self.checker_initiator_tag = None
560
307
self.disable_initiator_tag = None
561
308
self.checker_callback_tag = None
309
self.checker_command = config[u"checker"]
562
310
self.current_checker_command = None
563
self.approved = None
564
self.approvals_pending = 0
565
self.changedstate = (multiprocessing_manager
566
.Condition(multiprocessing_manager
567
.Lock()))
568
self.client_structure = [attr for attr in
569
self.__dict__.iterkeys()
570
if not attr.startswith("_")]
571
self.client_structure.append("client_structure")
572
573
for name, t in inspect.getmembers(type(self),
574
lambda obj:
575
isinstance(obj,
576
property)):
577
if not name.startswith("_"):
578
self.client_structure.append(name)
579
580
# Send notice to process children that client state has changed
581
def send_changedstate(self):
582
with self.changedstate:
583
self.changedstate.notify_all()
311
self.last_connect = None
584
312
585
313
def enable(self):
586
314
"""Start this client's checker and timeout hooks"""
587
if getattr(self, "enabled", False):
315
if getattr(self, u"enabled", False):
588
316
# Already enabled
589
317
return
590
self.expires = datetime.datetime.utcnow() + self.timeout
591
self.enabled = True
592
318
self.last_enabled = datetime.datetime.utcnow()
593
self.init_checker()
594
self.send_changedstate()
595
596
def disable(self, quiet=True):
597
"""Disable this client."""
598
if not getattr(self, "enabled", False):
599
return False
600
if not quiet:
601
logger.info("Disabling client %s", self.name)
602
if getattr(self, "disable_initiator_tag", None) is not None:
603
gobject.source_remove(self.disable_initiator_tag)
604
self.disable_initiator_tag = None
605
self.expires = None
606
if getattr(self, "checker_initiator_tag", None) is not None:
607
gobject.source_remove(self.checker_initiator_tag)
608
self.checker_initiator_tag = None
609
self.stop_checker()
610
self.enabled = False
611
if not quiet:
612
self.send_changedstate()
613
# Do not run this again if called by a gobject.timeout_add
614
return False
615
616
def __del__(self):
617
self.disable()
618
619
def init_checker(self):
620
319
# Schedule a new checker to be started an 'interval' from now,
621
320
# and every interval from then on.
622
if self.checker_initiator_tag is not None:
623
gobject.source_remove(self.checker_initiator_tag)
624
321
self.checker_initiator_tag = (gobject.timeout_add
625
322
(self.interval_milliseconds(),
626
323
self.start_checker))
324
# Also start a new checker *right now*.
325
self.start_checker()
627
326
# Schedule a disable() when 'timeout' has passed
628
if self.disable_initiator_tag is not None:
629
gobject.source_remove(self.disable_initiator_tag)
630
327
self.disable_initiator_tag = (gobject.timeout_add
631
328
(self.timeout_milliseconds(),
632
329
self.disable))
633
# Also start a new checker *right now*.
634
self.start_checker()
330
self.enabled = True
331
332
def disable(self):
333
"""Disable this client."""
334
if not getattr(self, "enabled", False):
335
return False
336
logger.info(u"Disabling client %s", self.name)
337
if getattr(self, u"disable_initiator_tag", False):
338
gobject.source_remove(self.disable_initiator_tag)
339
self.disable_initiator_tag = None
340
if getattr(self, u"checker_initiator_tag", False):
341
gobject.source_remove(self.checker_initiator_tag)
342
self.checker_initiator_tag = None
343
self.stop_checker()
344
if self.disable_hook:
345
self.disable_hook(self)
346
self.enabled = False
347
# Do not run this again if called by a gobject.timeout_add
348
return False
349
350
def __del__(self):
351
self.disable_hook = None
352
self.disable()
635
353
636
354
def checker_callback(self, pid, condition, command):
637
355
"""The checker has completed, so take appropriate actions."""
638
356
self.checker_callback_tag = None
639
357
self.checker = None
640
358
if os.WIFEXITED(condition):
641
self.last_checker_status = os.WEXITSTATUS(condition)
642
if self.last_checker_status == 0:
643
logger.info("Checker for %(name)s succeeded",
359
exitstatus = os.WEXITSTATUS(condition)
360
if exitstatus == 0:
361
logger.info(u"Checker for %(name)s succeeded",
644
362
vars(self))
645
363
self.checked_ok()
646
364
else:
647
logger.info("Checker for %(name)s failed",
365
logger.info(u"Checker for %(name)s failed",
648
366
vars(self))
649
367
else:
650
self.last_checker_status = -1
651
logger.warning("Checker for %(name)s crashed?",
368
logger.warning(u"Checker for %(name)s crashed?",
652
369
vars(self))
653
370
654
371
def checked_ok(self):
655
"""Assert that the client has been seen, alive and well."""
372
"""Bump up the timeout for this client.
373
374
This should only be called when the client has been seen,
375
alive and well.
376
"""
656
377
self.last_checked_ok = datetime.datetime.utcnow()
657
self.last_checker_status = 0
658
self.bump_timeout()
659
660
def bump_timeout(self, timeout=None):
661
"""Bump up the timeout for this client."""
662
if timeout is None:
663
timeout = self.timeout
664
if self.disable_initiator_tag is not None:
665
gobject.source_remove(self.disable_initiator_tag)
666
self.disable_initiator_tag = None
667
if getattr(self, "enabled", False):
668
self.disable_initiator_tag = (gobject.timeout_add
669
(timedelta_to_milliseconds
670
(timeout), self.disable))
671
self.expires = datetime.datetime.utcnow() + timeout
672
673
def need_approval(self):
674
self.last_approval_request = datetime.datetime.utcnow()
378
gobject.source_remove(self.disable_initiator_tag)
379
self.disable_initiator_tag = (gobject.timeout_add
380
(self.timeout_milliseconds(),
381
self.disable))
675
382
676
383
def start_checker(self):
677
384
"""Start a new checker subprocess if one is not running.
679
386
If a checker already exists, leave it running and do
680
387
nothing."""
681
388
# The reason for not killing a running checker is that if we
682
# did that, and if a checker (for some reason) started running
683
# slowly and taking more than 'interval' time, then the client
684
# would inevitably timeout, since no checker would get a
685
# chance to run to completion. If we instead leave running
389
# did that, then if a checker (for some reason) started
390
# running slowly and taking more than 'interval' time, the
391
# client would inevitably timeout, since no checker would get
392
# a chance to run to completion. If we instead leave running
686
393
# checkers alone, the checker would have to take more time
687
# than 'timeout' for the client to be disabled, which is as it
688
# should be.
394
# than 'timeout' for the client to be declared invalid, which
395
# is as it should be.
689
396
690
397
# If a checker exists, make sure it is not a zombie
691
try:
398
if self.checker is not None:
692
399
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
693
except AttributeError:
694
pass
695
except OSError as error:
696
if error.errno != errno.ECHILD:
697
raise
698
else:
699
400
if pid:
700
logger.warning("Checker was a zombie")
401
logger.warning(u"Checker was a zombie")
701
402
gobject.source_remove(self.checker_callback_tag)
702
403
self.checker_callback(pid, status,
703
404
self.current_checker_command)
704
405
# Start a new checker if needed
705
406
if self.checker is None:
706
# Escape attributes for the shell
707
escaped_attrs = dict(
708
(attr, re.escape(unicode(getattr(self, attr))))
709
for attr in
710
self.runtime_expansions)
711
407
try:
712
command = self.checker_command % escaped_attrs
713
except TypeError as error:
714
logger.error('Could not format string "%s"',
715
self.checker_command, exc_info=error)
716
return True # Try again later
408
# In case checker_command has exactly one % operator
409
command = self.checker_command % self.host
410
except TypeError:
411
# Escape attributes for the shell
412
escaped_attrs = dict((key,
413
re.escape(unicode(str(val),
414
errors=
415
u'replace')))
416
for key, val in
417
vars(self).iteritems())
418
try:
419
command = self.checker_command % escaped_attrs
420
except TypeError, error:
421
logger.error(u'Could not format string "%s":'
422
u' %s', self.checker_command, error)
423
return True # Try again later
717
424
self.current_checker_command = command
718
425
try:
719
logger.info("Starting checker %r for %s",
426
logger.info(u"Starting checker %r for %s",
720
427
command, self.name)
721
428
# We don't need to redirect stdout and stderr, since
722
429
# in normal mode, that is already done by daemon(),
723
430
# and in debug mode we don't want to. (Stdin is
724
431
# always replaced by /dev/null.)
725
# The exception is when not debugging but nevertheless
726
# running in the foreground; use the previously
727
# created wnull.
728
popen_args = {}
729
if (not self.server_settings["debug"]
730
and self.server_settings["foreground"]):
731
popen_args.update({"stdout": wnull,
732
"stderr": wnull })
733
432
self.checker = subprocess.Popen(command,
734
433
close_fds=True,
735
shell=True, cwd="/",
736
**popen_args)
737
except OSError as error:
738
logger.error("Failed to start subprocess",
739
exc_info=error)
740
return True
741
self.checker_callback_tag = (gobject.child_watch_add
742
(self.checker.pid,
743
self.checker_callback,
744
data=command))
745
# The checker may have completed before the gobject
746
# watch was added. Check for this.
747
try:
434
shell=True, cwd=u"/")
435
self.checker_callback_tag = (gobject.child_watch_add
436
(self.checker.pid,
437
self.checker_callback,
438
data=command))
439
# The checker may have completed before the gobject
440
# watch was added. Check for this.
748
441
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
749
except OSError as error:
750
if error.errno == errno.ECHILD:
751
# This should never happen
752
logger.error("Child process vanished",
753
exc_info=error)
754
return True
755
raise
756
if pid:
757
gobject.source_remove(self.checker_callback_tag)
758
self.checker_callback(pid, status, command)
442
if pid:
443
gobject.source_remove(self.checker_callback_tag)
444
self.checker_callback(pid, status, command)
445
except OSError, error:
446
logger.error(u"Failed to start subprocess: %s",
447
error)
759
448
# Re-run this periodically if run by gobject.timeout_add
760
449
return True
761
450
764
453
if self.checker_callback_tag:
765
454
gobject.source_remove(self.checker_callback_tag)
766
455
self.checker_callback_tag = None
767
if getattr(self, "checker", None) is None:
456
if getattr(self, u"checker", None) is None:
768
457
return
769
logger.debug("Stopping checker for %(name)s", vars(self))
458
logger.debug(u"Stopping checker for %(name)s", vars(self))
770
459
try:
771
self.checker.terminate()
772
#time.sleep(0.5)
460
os.kill(self.checker.pid, signal.SIGTERM)
461
#os.sleep(0.5)
773
462
#if self.checker.poll() is None:
774
# self.checker.kill()
775
except OSError as error:
463
# os.kill(self.checker.pid, signal.SIGKILL)
464
except OSError, error:
776
465
if error.errno != errno.ESRCH: # No such process
777
466
raise
778
467
self.checker = None
779
780
781
def dbus_service_property(dbus_interface, signature="v",
782
access="readwrite", byte_arrays=False):
783
"""Decorators for marking methods of a DBusObjectWithProperties to
784
become properties on the D-Bus.
785
786
The decorated method will be called with no arguments by "Get"
787
and with one argument by "Set".
788
789
The parameters, where they are supported, are the same as
790
dbus.service.method, except there is only "signature", since the
791
type from Get() and the type sent to Set() is the same.
792
"""
793
# Encoding deeply encoded byte arrays is not supported yet by the
794
# "Set" method, so we fail early here:
795
if byte_arrays and signature != "ay":
796
raise ValueError("Byte arrays not supported for non-'ay'"
797
" signature {0!r}".format(signature))
798
def decorator(func):
799
func._dbus_is_property = True
800
func._dbus_interface = dbus_interface
801
func._dbus_signature = signature
802
func._dbus_access = access
803
func._dbus_name = func.__name__
804
if func._dbus_name.endswith("_dbus_property"):
805
func._dbus_name = func._dbus_name[:-14]
806
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
807
return func
808
return decorator
809
810
811
def dbus_interface_annotations(dbus_interface):
812
"""Decorator for marking functions returning interface annotations
813
814
Usage:
815
816
@dbus_interface_annotations("org.example.Interface")
817
def _foo(self): # Function name does not matter
818
return {"org.freedesktop.DBus.Deprecated": "true",
819
"org.freedesktop.DBus.Property.EmitsChangedSignal":
820
"false"}
821
"""
822
def decorator(func):
823
func._dbus_is_interface = True
824
func._dbus_interface = dbus_interface
825
func._dbus_name = dbus_interface
826
return func
827
return decorator
828
829
830
def dbus_annotations(annotations):
831
"""Decorator to annotate D-Bus methods, signals or properties
832
Usage:
833
834
@dbus_service_property("org.example.Interface", signature="b",
835
access="r")
836
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
837
"org.freedesktop.DBus.Property."
838
"EmitsChangedSignal": "false"})
839
def Property_dbus_property(self):
840
return dbus.Boolean(False)
841
"""
842
def decorator(func):
843
func._dbus_annotations = annotations
844
return func
845
return decorator
846
847
848
class DBusPropertyException(dbus.exceptions.DBusException):
849
"""A base class for D-Bus property-related exceptions
850
"""
851
def __unicode__(self):
852
return unicode(str(self))
853
854
855
class DBusPropertyAccessException(DBusPropertyException):
856
"""A property's access permissions disallows an operation.
857
"""
858
pass
859
860
861
class DBusPropertyNotFound(DBusPropertyException):
862
"""An attempt was made to access a non-existing property.
863
"""
864
pass
865
866
867
class DBusObjectWithProperties(dbus.service.Object):
868
"""A D-Bus object with properties.
869
870
Classes inheriting from this can use the dbus_service_property
871
decorator to expose methods as D-Bus properties. It exposes the
872
standard Get(), Set(), and GetAll() methods on the D-Bus.
873
"""
874
875
@staticmethod
876
def _is_dbus_thing(thing):
877
"""Returns a function testing if an attribute is a D-Bus thing
878
879
If called like _is_dbus_thing("method") it returns a function
880
suitable for use as predicate to inspect.getmembers().
881
"""
882
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
883
False)
884
885
def _get_all_dbus_things(self, thing):
886
"""Returns a generator of (name, attribute) pairs
887
"""
888
return ((getattr(athing.__get__(self), "_dbus_name",
889
name),
890
athing.__get__(self))
891
for cls in self.__class__.__mro__
892
for name, athing in
893
inspect.getmembers(cls,
894
self._is_dbus_thing(thing)))
895
896
def _get_dbus_property(self, interface_name, property_name):
897
"""Returns a bound method if one exists which is a D-Bus
898
property with the specified name and interface.
899
"""
900
for cls in self.__class__.__mro__:
901
for name, value in (inspect.getmembers
902
(cls,
903
self._is_dbus_thing("property"))):
904
if (value._dbus_name == property_name
905
and value._dbus_interface == interface_name):
906
return value.__get__(self)
907
908
# No such property
909
raise DBusPropertyNotFound(self.dbus_object_path + ":"
910
+ interface_name + "."
911
+ property_name)
912
913
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
914
out_signature="v")
915
def Get(self, interface_name, property_name):
916
"""Standard D-Bus property Get() method, see D-Bus standard.
917
"""
918
prop = self._get_dbus_property(interface_name, property_name)
919
if prop._dbus_access == "write":
920
raise DBusPropertyAccessException(property_name)
921
value = prop()
922
if not hasattr(value, "variant_level"):
923
return value
924
return type(value)(value, variant_level=value.variant_level+1)
925
926
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
927
def Set(self, interface_name, property_name, value):
928
"""Standard D-Bus property Set() method, see D-Bus standard.
929
"""
930
prop = self._get_dbus_property(interface_name, property_name)
931
if prop._dbus_access == "read":
932
raise DBusPropertyAccessException(property_name)
933
if prop._dbus_get_args_options["byte_arrays"]:
934
# The byte_arrays option is not supported yet on
935
# signatures other than "ay".
936
if prop._dbus_signature != "ay":
937
raise ValueError
938
value = dbus.ByteArray(b''.join(chr(byte)
939
for byte in value))
940
prop(value)
941
942
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
943
out_signature="a{sv}")
944
def GetAll(self, interface_name):
945
"""Standard D-Bus property GetAll() method, see D-Bus
946
standard.
947
948
Note: Will not include properties with access="write".
949
"""
950
properties = {}
951
for name, prop in self._get_all_dbus_things("property"):
952
if (interface_name
953
and interface_name != prop._dbus_interface):
954
# Interface non-empty but did not match
955
continue
956
# Ignore write-only properties
957
if prop._dbus_access == "write":
958
continue
959
value = prop()
960
if not hasattr(value, "variant_level"):
961
properties[name] = value
962
continue
963
properties[name] = type(value)(value, variant_level=
964
value.variant_level+1)
965
return dbus.Dictionary(properties, signature="sv")
966
967
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
968
out_signature="s",
969
path_keyword='object_path',
970
connection_keyword='connection')
971
def Introspect(self, object_path, connection):
972
"""Overloading of standard D-Bus method.
973
974
Inserts property tags and interface annotation tags.
975
"""
976
xmlstring = dbus.service.Object.Introspect(self, object_path,
977
connection)
978
try:
979
document = xml.dom.minidom.parseString(xmlstring)
980
def make_tag(document, name, prop):
981
e = document.createElement("property")
982
e.setAttribute("name", name)
983
e.setAttribute("type", prop._dbus_signature)
984
e.setAttribute("access", prop._dbus_access)
985
return e
986
for if_tag in document.getElementsByTagName("interface"):
987
# Add property tags
988
for tag in (make_tag(document, name, prop)
989
for name, prop
990
in self._get_all_dbus_things("property")
991
if prop._dbus_interface
992
== if_tag.getAttribute("name")):
993
if_tag.appendChild(tag)
994
# Add annotation tags
995
for typ in ("method", "signal", "property"):
996
for tag in if_tag.getElementsByTagName(typ):
997
annots = dict()
998
for name, prop in (self.
999
_get_all_dbus_things(typ)):
1000
if (name == tag.getAttribute("name")
1001
and prop._dbus_interface
1002
== if_tag.getAttribute("name")):
1003
annots.update(getattr
1004
(prop,
1005
"_dbus_annotations",
1006
{}))
1007
for name, value in annots.iteritems():
1008
ann_tag = document.createElement(
1009
"annotation")
1010
ann_tag.setAttribute("name", name)
1011
ann_tag.setAttribute("value", value)
1012
tag.appendChild(ann_tag)
1013
# Add interface annotation tags
1014
for annotation, value in dict(
1015
itertools.chain.from_iterable(
1016
annotations().iteritems()
1017
for name, annotations in
1018
self._get_all_dbus_things("interface")
1019
if name == if_tag.getAttribute("name")
1020
)).iteritems():
1021
ann_tag = document.createElement("annotation")
1022
ann_tag.setAttribute("name", annotation)
1023
ann_tag.setAttribute("value", value)
1024
if_tag.appendChild(ann_tag)
1025
# Add the names to the return values for the
1026
# "org.freedesktop.DBus.Properties" methods
1027
if (if_tag.getAttribute("name")
1028
== "org.freedesktop.DBus.Properties"):
1029
for cn in if_tag.getElementsByTagName("method"):
1030
if cn.getAttribute("name") == "Get":
1031
for arg in cn.getElementsByTagName("arg"):
1032
if (arg.getAttribute("direction")
1033
== "out"):
1034
arg.setAttribute("name", "value")
1035
elif cn.getAttribute("name") == "GetAll":
1036
for arg in cn.getElementsByTagName("arg"):
1037
if (arg.getAttribute("direction")
1038
== "out"):
1039
arg.setAttribute("name", "props")
1040
xmlstring = document.toxml("utf-8")
1041
document.unlink()
1042
except (AttributeError, xml.dom.DOMException,
1043
xml.parsers.expat.ExpatError) as error:
1044
logger.error("Failed to override Introspection method",
1045
exc_info=error)
1046
return xmlstring
1047
1048
1049
def datetime_to_dbus(dt, variant_level=0):
1050
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1051
if dt is None:
1052
return dbus.String("", variant_level = variant_level)
1053
return dbus.String(dt.isoformat(),
1054
variant_level=variant_level)
1055
1056
1057
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1058
"""A class decorator; applied to a subclass of
1059
dbus.service.Object, it will add alternate D-Bus attributes with
1060
interface names according to the "alt_interface_names" mapping.
1061
Usage:
1062
1063
@alternate_dbus_interfaces({"org.example.Interface":
1064
"net.example.AlternateInterface"})
1065
class SampleDBusObject(dbus.service.Object):
1066
@dbus.service.method("org.example.Interface")
1067
def SampleDBusMethod():
1068
pass
1069
1070
The above "SampleDBusMethod" on "SampleDBusObject" will be
1071
reachable via two interfaces: "org.example.Interface" and
1072
"net.example.AlternateInterface", the latter of which will have
1073
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1074
"true", unless "deprecate" is passed with a False value.
1075
1076
This works for methods and signals, and also for D-Bus properties
1077
(from DBusObjectWithProperties) and interfaces (from the
1078
dbus_interface_annotations decorator).
1079
"""
1080
def wrapper(cls):
1081
for orig_interface_name, alt_interface_name in (
1082
alt_interface_names.iteritems()):
1083
attr = {}
1084
interface_names = set()
1085
# Go though all attributes of the class
1086
for attrname, attribute in inspect.getmembers(cls):
1087
# Ignore non-D-Bus attributes, and D-Bus attributes
1088
# with the wrong interface name
1089
if (not hasattr(attribute, "_dbus_interface")
1090
or not attribute._dbus_interface
1091
.startswith(orig_interface_name)):
1092
continue
1093
# Create an alternate D-Bus interface name based on
1094
# the current name
1095
alt_interface = (attribute._dbus_interface
1096
.replace(orig_interface_name,
1097
alt_interface_name))
1098
interface_names.add(alt_interface)
1099
# Is this a D-Bus signal?
1100
if getattr(attribute, "_dbus_is_signal", False):
1101
# Extract the original non-method undecorated
1102
# function by black magic
1103
nonmethod_func = (dict(
1104
zip(attribute.func_code.co_freevars,
1105
attribute.__closure__))["func"]
1106
.cell_contents)
1107
# Create a new, but exactly alike, function
1108
# object, and decorate it to be a new D-Bus signal
1109
# with the alternate D-Bus interface name
1110
new_function = (dbus.service.signal
1111
(alt_interface,
1112
attribute._dbus_signature)
1113
(types.FunctionType(
1114
nonmethod_func.func_code,
1115
nonmethod_func.func_globals,
1116
nonmethod_func.func_name,
1117
nonmethod_func.func_defaults,
1118
nonmethod_func.func_closure)))
1119
# Copy annotations, if any
1120
try:
1121
new_function._dbus_annotations = (
1122
dict(attribute._dbus_annotations))
1123
except AttributeError:
1124
pass
1125
# Define a creator of a function to call both the
1126
# original and alternate functions, so both the
1127
# original and alternate signals gets sent when
1128
# the function is called
1129
def fixscope(func1, func2):
1130
"""This function is a scope container to pass
1131
func1 and func2 to the "call_both" function
1132
outside of its arguments"""
1133
def call_both(*args, **kwargs):
1134
"""This function will emit two D-Bus
1135
signals by calling func1 and func2"""
1136
func1(*args, **kwargs)
1137
func2(*args, **kwargs)
1138
return call_both
1139
# Create the "call_both" function and add it to
1140
# the class
1141
attr[attrname] = fixscope(attribute, new_function)
1142
# Is this a D-Bus method?
1143
elif getattr(attribute, "_dbus_is_method", False):
1144
# Create a new, but exactly alike, function
1145
# object. Decorate it to be a new D-Bus method
1146
# with the alternate D-Bus interface name. Add it
1147
# to the class.
1148
attr[attrname] = (dbus.service.method
1149
(alt_interface,
1150
attribute._dbus_in_signature,
1151
attribute._dbus_out_signature)
1152
(types.FunctionType
1153
(attribute.func_code,
1154
attribute.func_globals,
1155
attribute.func_name,
1156
attribute.func_defaults,
1157
attribute.func_closure)))
1158
# Copy annotations, if any
1159
try:
1160
attr[attrname]._dbus_annotations = (
1161
dict(attribute._dbus_annotations))
1162
except AttributeError:
1163
pass
1164
# Is this a D-Bus property?
1165
elif getattr(attribute, "_dbus_is_property", False):
1166
# Create a new, but exactly alike, function
1167
# object, and decorate it to be a new D-Bus
1168
# property with the alternate D-Bus interface
1169
# name. Add it to the class.
1170
attr[attrname] = (dbus_service_property
1171
(alt_interface,
1172
attribute._dbus_signature,
1173
attribute._dbus_access,
1174
attribute
1175
._dbus_get_args_options
1176
["byte_arrays"])
1177
(types.FunctionType
1178
(attribute.func_code,
1179
attribute.func_globals,
1180
attribute.func_name,
1181
attribute.func_defaults,
1182
attribute.func_closure)))
1183
# Copy annotations, if any
1184
try:
1185
attr[attrname]._dbus_annotations = (
1186
dict(attribute._dbus_annotations))
1187
except AttributeError:
1188
pass
1189
# Is this a D-Bus interface?
1190
elif getattr(attribute, "_dbus_is_interface", False):
1191
# Create a new, but exactly alike, function
1192
# object. Decorate it to be a new D-Bus interface
1193
# with the alternate D-Bus interface name. Add it
1194
# to the class.
1195
attr[attrname] = (dbus_interface_annotations
1196
(alt_interface)
1197
(types.FunctionType
1198
(attribute.func_code,
1199
attribute.func_globals,
1200
attribute.func_name,
1201
attribute.func_defaults,
1202
attribute.func_closure)))
1203
if deprecate:
1204
# Deprecate all alternate interfaces
1205
iname="_AlternateDBusNames_interface_annotation{0}"
1206
for interface_name in interface_names:
1207
@dbus_interface_annotations(interface_name)
1208
def func(self):
1209
return { "org.freedesktop.DBus.Deprecated":
1210
"true" }
1211
# Find an unused name
1212
for aname in (iname.format(i)
1213
for i in itertools.count()):
1214
if aname not in attr:
1215
attr[aname] = func
1216
break
1217
if interface_names:
1218
# Replace the class with a new subclass of it with
1219
# methods, signals, etc. as created above.
1220
cls = type(b"{0}Alternate".format(cls.__name__),
1221
(cls,), attr)
1222
return cls
1223
return wrapper
1224
1225
1226
@alternate_dbus_interfaces({"se.recompile.Mandos":
1227
"se.bsnet.fukt.Mandos"})
1228
class ClientDBus(Client, DBusObjectWithProperties):
468
469
def still_valid(self):
470
"""Has the timeout not yet passed for this client?"""
471
if not getattr(self, u"enabled", False):
472
return False
473
now = datetime.datetime.utcnow()
474
if self.last_checked_ok is None:
475
return now < (self.created + self.timeout)
476
else:
477
return now < (self.last_checked_ok + self.timeout)
478
479
480
class ClientDBus(Client, dbus.service.Object):
1229
481
"""A Client class using D-Bus
1230
482
1231
483
Attributes:
1232
484
dbus_object_path: dbus.ObjectPath
1233
485
bus: dbus.SystemBus()
1234
486
"""
1235
1236
runtime_expansions = (Client.runtime_expansions
1237
+ ("dbus_object_path",))
1238
1239
487
# dbus.service.Object doesn't use super(), so we can't either.
1240
488
1241
489
def __init__(self, bus = None, *args, **kwargs):
1243
491
Client.__init__(self, *args, **kwargs)
1244
492
# Only now, when this client is initialized, can it show up on
1245
493
# the D-Bus
1246
client_object_name = unicode(self.name).translate(
1247
{ord("."): ord("_"),
1248
ord("-"): ord("_")})
1249
494
self.dbus_object_path = (dbus.ObjectPath
1250
("/clients/" + client_object_name))
1251
DBusObjectWithProperties.__init__(self, self.bus,
1252
self.dbus_object_path)
1253
1254
def notifychangeproperty(transform_func,
1255
dbus_name, type_func=lambda x: x,
1256
variant_level=1):
1257
""" Modify a variable so that it's a property which announces
1258
its changes to DBus.
1259
1260
transform_fun: Function that takes a value and a variant_level
1261
and transforms it to a D-Bus type.
1262
dbus_name: D-Bus name of the variable
1263
type_func: Function that transform the value before sending it
1264
to the D-Bus. Default: no transform
1265
variant_level: D-Bus variant level. Default: 1
1266
"""
1267
attrname = "_{0}".format(dbus_name)
1268
def setter(self, value):
1269
if hasattr(self, "dbus_object_path"):
1270
if (not hasattr(self, attrname) or
1271
type_func(getattr(self, attrname, None))
1272
!= type_func(value)):
1273
dbus_value = transform_func(type_func(value),
1274
variant_level
1275
=variant_level)
1276
self.PropertyChanged(dbus.String(dbus_name),
1277
dbus_value)
1278
setattr(self, attrname, value)
1279
1280
return property(lambda self: getattr(self, attrname), setter)
1281
1282
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1283
approvals_pending = notifychangeproperty(dbus.Boolean,
1284
"ApprovalPending",
1285
type_func = bool)
1286
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1287
last_enabled = notifychangeproperty(datetime_to_dbus,
1288
"LastEnabled")
1289
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1290
type_func = lambda checker:
1291
checker is not None)
1292
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1293
"LastCheckedOK")
1294
last_checker_status = notifychangeproperty(dbus.Int16,
1295
"LastCheckerStatus")
1296
last_approval_request = notifychangeproperty(
1297
datetime_to_dbus, "LastApprovalRequest")
1298
approved_by_default = notifychangeproperty(dbus.Boolean,
1299
"ApprovedByDefault")
1300
approval_delay = notifychangeproperty(dbus.UInt64,
1301
"ApprovalDelay",
1302
type_func =
1303
timedelta_to_milliseconds)
1304
approval_duration = notifychangeproperty(
1305
dbus.UInt64, "ApprovalDuration",
1306
type_func = timedelta_to_milliseconds)
1307
host = notifychangeproperty(dbus.String, "Host")
1308
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1309
type_func =
1310
timedelta_to_milliseconds)
1311
extended_timeout = notifychangeproperty(
1312
dbus.UInt64, "ExtendedTimeout",
1313
type_func = timedelta_to_milliseconds)
1314
interval = notifychangeproperty(dbus.UInt64,
1315
"Interval",
1316
type_func =
1317
timedelta_to_milliseconds)
1318
checker_command = notifychangeproperty(dbus.String, "Checker")
1319
1320
del notifychangeproperty
495
(u"/clients/"
496
+ self.name.replace(u".", u"_")))
497
dbus.service.Object.__init__(self, self.bus,
498
self.dbus_object_path)
499
500
@staticmethod
501
def _datetime_to_dbus(dt, variant_level=0):
502
"""Convert a UTC datetime.datetime() to a D-Bus type."""
503
return dbus.String(dt.isoformat(),
504
variant_level=variant_level)
505
506
def enable(self):
507
oldstate = getattr(self, u"enabled", False)
508
r = Client.enable(self)
509
if oldstate != self.enabled:
510
# Emit D-Bus signals
511
self.PropertyChanged(dbus.String(u"enabled"),
512
dbus.Boolean(True, variant_level=1))
513
self.PropertyChanged(
514
dbus.String(u"last_enabled"),
515
self._datetime_to_dbus(self.last_enabled,
516
variant_level=1))
517
return r
518
519
def disable(self, signal = True):
520
oldstate = getattr(self, u"enabled", False)
521
r = Client.disable(self)
522
if signal and oldstate != self.enabled:
523
# Emit D-Bus signal
524
self.PropertyChanged(dbus.String(u"enabled"),
525
dbus.Boolean(False, variant_level=1))
526
return r
1321
527
1322
528
def __del__(self, *args, **kwargs):
1323
529
try:
1324
530
self.remove_from_connection()
1325
531
except LookupError:
1326
532
pass
1327
if hasattr(DBusObjectWithProperties, "__del__"):
1328
DBusObjectWithProperties.__del__(self, *args, **kwargs)
533
if hasattr(dbus.service.Object, u"__del__"):
534
dbus.service.Object.__del__(self, *args, **kwargs)
1329
535
Client.__del__(self, *args, **kwargs)
1330
536
1331
537
def checker_callback(self, pid, condition, command,
1332
538
*args, **kwargs):
1333
539
self.checker_callback_tag = None
1334
540
self.checker = None
541
# Emit D-Bus signal
542
self.PropertyChanged(dbus.String(u"checker_running"),
543
dbus.Boolean(False, variant_level=1))
1335
544
if os.WIFEXITED(condition):
1336
545
exitstatus = os.WEXITSTATUS(condition)
1337
546
# Emit D-Bus signal
1347
556
return Client.checker_callback(self, pid, condition, command,
1348
557
*args, **kwargs)
1349
558
559
def checked_ok(self, *args, **kwargs):
560
r = Client.checked_ok(self, *args, **kwargs)
561
# Emit D-Bus signal
562
self.PropertyChanged(
563
dbus.String(u"last_checked_ok"),
564
(self._datetime_to_dbus(self.last_checked_ok,
565
variant_level=1)))
566
return r
567
1350
568
def start_checker(self, *args, **kwargs):
1351
569
old_checker = self.checker
1352
570
if self.checker is not None:
1359
577
and old_checker_pid != self.checker.pid):
1360
578
# Emit D-Bus signal
1361
579
self.CheckerStarted(self.current_checker_command)
1362
return r
1363
1364
def _reset_approved(self):
1365
self.approved = None
1366
return False
1367
1368
def approve(self, value=True):
1369
self.approved = value
1370
gobject.timeout_add(timedelta_to_milliseconds
1371
(self.approval_duration),
1372
self._reset_approved)
1373
self.send_changedstate()
1374
1375
## D-Bus methods, signals & properties
1376
_interface = "se.recompile.Mandos.Client"
1377
1378
## Interfaces
1379
1380
@dbus_interface_annotations(_interface)
1381
def _foo(self):
1382
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1383
"false"}
1384
1385
## Signals
580
self.PropertyChanged(
581
dbus.String(u"checker_running"),
582
dbus.Boolean(True, variant_level=1))
583
return r
584
585
def stop_checker(self, *args, **kwargs):
586
old_checker = getattr(self, u"checker", None)
587
r = Client.stop_checker(self, *args, **kwargs)
588
if (old_checker is not None
589
and getattr(self, u"checker", None) is None):
590
self.PropertyChanged(dbus.String(u"checker_running"),
591
dbus.Boolean(False, variant_level=1))
592
return r
593
594
## D-Bus methods & signals
595
_interface = u"se.bsnet.fukt.Mandos.Client"
596
597
# CheckedOK - method
598
@dbus.service.method(_interface)
599
def CheckedOK(self):
600
return self.checked_ok()
1386
601
1387
602
# CheckerCompleted - signal
1388
@dbus.service.signal(_interface, signature="nxs")
603
@dbus.service.signal(_interface, signature=u"nxs")
1389
604
def CheckerCompleted(self, exitcode, waitstatus, command):
1390
605
"D-Bus signal"
1391
606
pass
1392
607
1393
608
# CheckerStarted - signal
1394
@dbus.service.signal(_interface, signature="s")
609
@dbus.service.signal(_interface, signature=u"s")
1395
610
def CheckerStarted(self, command):
1396
611
"D-Bus signal"
1397
612
pass
1398
613
614
# GetAllProperties - method
615
@dbus.service.method(_interface, out_signature=u"a{sv}")
616
def GetAllProperties(self):
617
"D-Bus method"
618
return dbus.Dictionary({
619
dbus.String(u"name"):
620
dbus.String(self.name, variant_level=1),
621
dbus.String(u"fingerprint"):
622
dbus.String(self.fingerprint, variant_level=1),
623
dbus.String(u"host"):
624
dbus.String(self.host, variant_level=1),
625
dbus.String(u"created"):
626
self._datetime_to_dbus(self.created,
627
variant_level=1),
628
dbus.String(u"last_enabled"):
629
(self._datetime_to_dbus(self.last_enabled,
630
variant_level=1)
631
if self.last_enabled is not None
632
else dbus.Boolean(False, variant_level=1)),
633
dbus.String(u"enabled"):
634
dbus.Boolean(self.enabled, variant_level=1),
635
dbus.String(u"last_checked_ok"):
636
(self._datetime_to_dbus(self.last_checked_ok,
637
variant_level=1)
638
if self.last_checked_ok is not None
639
else dbus.Boolean (False, variant_level=1)),
640
dbus.String(u"timeout"):
641
dbus.UInt64(self.timeout_milliseconds(),
642
variant_level=1),
643
dbus.String(u"interval"):
644
dbus.UInt64(self.interval_milliseconds(),
645
variant_level=1),
646
dbus.String(u"checker"):
647
dbus.String(self.checker_command,
648
variant_level=1),
649
dbus.String(u"checker_running"):
650
dbus.Boolean(self.checker is not None,
651
variant_level=1),
652
dbus.String(u"object_path"):
653
dbus.ObjectPath(self.dbus_object_path,
654
variant_level=1)
655
}, signature=u"sv")
656
657
# IsStillValid - method
658
@dbus.service.method(_interface, out_signature=u"b")
659
def IsStillValid(self):
660
return self.still_valid()
661
1399
662
# PropertyChanged - signal
1400
@dbus.service.signal(_interface, signature="sv")
663
@dbus.service.signal(_interface, signature=u"sv")
1401
664
def PropertyChanged(self, property, value):
1402
665
"D-Bus signal"
1403
666
pass
1404
667
1405
# GotSecret - signal
668
# ReceivedSecret - signal
1406
669
@dbus.service.signal(_interface)
1407
def GotSecret(self):
1408
"""D-Bus signal
1409
Is sent after a successful transfer of secret from the Mandos
1410
server to mandos-client
1411
"""
670
def ReceivedSecret(self):
671
"D-Bus signal"
1412
672
pass
1413
673
1414
674
# Rejected - signal
1415
@dbus.service.signal(_interface, signature="s")
1416
def Rejected(self, reason):
675
@dbus.service.signal(_interface)
676
def Rejected(self):
1417
677
"D-Bus signal"
1418
678
pass
1419
679
1420
# NeedApproval - signal
1421
@dbus.service.signal(_interface, signature="tb")
1422
def NeedApproval(self, timeout, default):
1423
"D-Bus signal"
1424
return self.need_approval()
1425
1426
## Methods
1427
1428
# Approve - method
1429
@dbus.service.method(_interface, in_signature="b")
1430
def Approve(self, value):
1431
self.approve(value)
1432
1433
# CheckedOK - method
1434
@dbus.service.method(_interface)
1435
def CheckedOK(self):
1436
self.checked_ok()
680
# SetChecker - method
681
@dbus.service.method(_interface, in_signature=u"s")
682
def SetChecker(self, checker):
683
"D-Bus setter method"
684
self.checker_command = checker
685
# Emit D-Bus signal
686
self.PropertyChanged(dbus.String(u"checker"),
687
dbus.String(self.checker_command,
688
variant_level=1))
689
690
# SetHost - method
691
@dbus.service.method(_interface, in_signature=u"s")
692
def SetHost(self, host):
693
"D-Bus setter method"
694
self.host = host
695
# Emit D-Bus signal
696
self.PropertyChanged(dbus.String(u"host"),
697
dbus.String(self.host, variant_level=1))
698
699
# SetInterval - method
700
@dbus.service.method(_interface, in_signature=u"t")
701
def SetInterval(self, milliseconds):
702
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
703
# Emit D-Bus signal
704
self.PropertyChanged(dbus.String(u"interval"),
705
(dbus.UInt64(self.interval_milliseconds(),
706
variant_level=1)))
707
708
# SetSecret - method
709
@dbus.service.method(_interface, in_signature=u"ay",
710
byte_arrays=True)
711
def SetSecret(self, secret):
712
"D-Bus setter method"
713
self.secret = str(secret)
714
715
# SetTimeout - method
716
@dbus.service.method(_interface, in_signature=u"t")
717
def SetTimeout(self, milliseconds):
718
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
719
# Emit D-Bus signal
720
self.PropertyChanged(dbus.String(u"timeout"),
721
(dbus.UInt64(self.timeout_milliseconds(),
722
variant_level=1)))
1437
723
1438
724
# Enable - method
1439
725
@dbus.service.method(_interface)
1458
744
def StopChecker(self):
1459
745
self.stop_checker()
1460
746
1461
## Properties
1462
1463
# ApprovalPending - property
1464
@dbus_service_property(_interface, signature="b", access="read")
1465
def ApprovalPending_dbus_property(self):
1466
return dbus.Boolean(bool(self.approvals_pending))
1467
1468
# ApprovedByDefault - property
1469
@dbus_service_property(_interface, signature="b",
1470
access="readwrite")
1471
def ApprovedByDefault_dbus_property(self, value=None):
1472
if value is None: # get
1473
return dbus.Boolean(self.approved_by_default)
1474
self.approved_by_default = bool(value)
1475
1476
# ApprovalDelay - property
1477
@dbus_service_property(_interface, signature="t",
1478
access="readwrite")
1479
def ApprovalDelay_dbus_property(self, value=None):
1480
if value is None: # get
1481
return dbus.UInt64(self.approval_delay_milliseconds())
1482
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1483
1484
# ApprovalDuration - property
1485
@dbus_service_property(_interface, signature="t",
1486
access="readwrite")
1487
def ApprovalDuration_dbus_property(self, value=None):
1488
if value is None: # get
1489
return dbus.UInt64(timedelta_to_milliseconds(
1490
self.approval_duration))
1491
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1492
1493
# Name - property
1494
@dbus_service_property(_interface, signature="s", access="read")
1495
def Name_dbus_property(self):
1496
return dbus.String(self.name)
1497
1498
# Fingerprint - property
1499
@dbus_service_property(_interface, signature="s", access="read")
1500
def Fingerprint_dbus_property(self):
1501
return dbus.String(self.fingerprint)
1502
1503
# Host - property
1504
@dbus_service_property(_interface, signature="s",
1505
access="readwrite")
1506
def Host_dbus_property(self, value=None):
1507
if value is None: # get
1508
return dbus.String(self.host)
1509
self.host = unicode(value)
1510
1511
# Created - property
1512
@dbus_service_property(_interface, signature="s", access="read")
1513
def Created_dbus_property(self):
1514
return datetime_to_dbus(self.created)
1515
1516
# LastEnabled - property
1517
@dbus_service_property(_interface, signature="s", access="read")
1518
def LastEnabled_dbus_property(self):
1519
return datetime_to_dbus(self.last_enabled)
1520
1521
# Enabled - property
1522
@dbus_service_property(_interface, signature="b",
1523
access="readwrite")
1524
def Enabled_dbus_property(self, value=None):
1525
if value is None: # get
1526
return dbus.Boolean(self.enabled)
1527
if value:
1528
self.enable()
1529
else:
1530
self.disable()
1531
1532
# LastCheckedOK - property
1533
@dbus_service_property(_interface, signature="s",
1534
access="readwrite")
1535
def LastCheckedOK_dbus_property(self, value=None):
1536
if value is not None:
1537
self.checked_ok()
1538
return
1539
return datetime_to_dbus(self.last_checked_ok)
1540
1541
# LastCheckerStatus - property
1542
@dbus_service_property(_interface, signature="n",
1543
access="read")
1544
def LastCheckerStatus_dbus_property(self):
1545
return dbus.Int16(self.last_checker_status)
1546
1547
# Expires - property
1548
@dbus_service_property(_interface, signature="s", access="read")
1549
def Expires_dbus_property(self):
1550
return datetime_to_dbus(self.expires)
1551
1552
# LastApprovalRequest - property
1553
@dbus_service_property(_interface, signature="s", access="read")
1554
def LastApprovalRequest_dbus_property(self):
1555
return datetime_to_dbus(self.last_approval_request)
1556
1557
# Timeout - property
1558
@dbus_service_property(_interface, signature="t",
1559
access="readwrite")
1560
def Timeout_dbus_property(self, value=None):
1561
if value is None: # get
1562
return dbus.UInt64(self.timeout_milliseconds())
1563
old_timeout = self.timeout
1564
self.timeout = datetime.timedelta(0, 0, 0, value)
1565
# Reschedule disabling
1566
if self.enabled:
1567
now = datetime.datetime.utcnow()
1568
self.expires += self.timeout - old_timeout
1569
if self.expires <= now:
1570
# The timeout has passed
1571
self.disable()
1572
else:
1573
if (getattr(self, "disable_initiator_tag", None)
1574
is None):
1575
return
1576
gobject.source_remove(self.disable_initiator_tag)
1577
self.disable_initiator_tag = (
1578
gobject.timeout_add(
1579
timedelta_to_milliseconds(self.expires - now),
1580
self.disable))
1581
1582
# ExtendedTimeout - property
1583
@dbus_service_property(_interface, signature="t",
1584
access="readwrite")
1585
def ExtendedTimeout_dbus_property(self, value=None):
1586
if value is None: # get
1587
return dbus.UInt64(self.extended_timeout_milliseconds())
1588
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1589
1590
# Interval - property
1591
@dbus_service_property(_interface, signature="t",
1592
access="readwrite")
1593
def Interval_dbus_property(self, value=None):
1594
if value is None: # get
1595
return dbus.UInt64(self.interval_milliseconds())
1596
self.interval = datetime.timedelta(0, 0, 0, value)
1597
if getattr(self, "checker_initiator_tag", None) is None:
1598
return
1599
if self.enabled:
1600
# Reschedule checker run
1601
gobject.source_remove(self.checker_initiator_tag)
1602
self.checker_initiator_tag = (gobject.timeout_add
1603
(value, self.start_checker))
1604
self.start_checker() # Start one now, too
1605
1606
# Checker - property
1607
@dbus_service_property(_interface, signature="s",
1608
access="readwrite")
1609
def Checker_dbus_property(self, value=None):
1610
if value is None: # get
1611
return dbus.String(self.checker_command)
1612
self.checker_command = unicode(value)
1613
1614
# CheckerRunning - property
1615
@dbus_service_property(_interface, signature="b",
1616
access="readwrite")
1617
def CheckerRunning_dbus_property(self, value=None):
1618
if value is None: # get
1619
return dbus.Boolean(self.checker is not None)
1620
if value:
1621
self.start_checker()
1622
else:
1623
self.stop_checker()
1624
1625
# ObjectPath - property
1626
@dbus_service_property(_interface, signature="o", access="read")
1627
def ObjectPath_dbus_property(self):
1628
return self.dbus_object_path # is already a dbus.ObjectPath
1629
1630
# Secret = property
1631
@dbus_service_property(_interface, signature="ay",
1632
access="write", byte_arrays=True)
1633
def Secret_dbus_property(self, value):
1634
self.secret = str(value)
1635
1636
747
del _interface
1637
748
1638
749
1639
class ProxyClient(object):
1640
def __init__(self, child_pipe, fpr, address):
1641
self._pipe = child_pipe
1642
self._pipe.send(('init', fpr, address))
1643
if not self._pipe.recv():
1644
raise KeyError()
1645
1646
def __getattribute__(self, name):
1647
if name == '_pipe':
1648
return super(ProxyClient, self).__getattribute__(name)
1649
self._pipe.send(('getattr', name))
1650
data = self._pipe.recv()
1651
if data[0] == 'data':
1652
return data[1]
1653
if data[0] == 'function':
1654
def func(*args, **kwargs):
1655
self._pipe.send(('funcall', name, args, kwargs))
1656
return self._pipe.recv()[1]
1657
return func
1658
1659
def __setattr__(self, name, value):
1660
if name == '_pipe':
1661
return super(ProxyClient, self).__setattr__(name, value)
1662
self._pipe.send(('setattr', name, value))
1663
1664
1665
750
class ClientHandler(socketserver.BaseRequestHandler, object):
1666
751
"""A class to handle client connections.
1667
752
1669
754
Note: This will run in its own forked process."""
1670
755
1671
756
def handle(self):
1672
with contextlib.closing(self.server.child_pipe) as child_pipe:
1673
logger.info("TCP connection from: %s",
1674
unicode(self.client_address))
1675
logger.debug("Pipe FD: %d",
1676
self.server.child_pipe.fileno())
1677
757
logger.info(u"TCP connection from: %s",
758
unicode(self.client_address))
759
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
760
# Open IPC pipe to parent process
761
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1678
762
session = (gnutls.connection
1679
763
.ClientSession(self.request,
1680
764
gnutls.connection
1681
765
.X509Credentials()))
1682
766
767
line = self.request.makefile().readline()
768
logger.debug(u"Protocol version: %r", line)
769
try:
770
if int(line.strip().split()[0]) > 1:
771
raise RuntimeError
772
except (ValueError, IndexError, RuntimeError), error:
773
logger.error(u"Unknown protocol version: %s", error)
774
return
775
1683
776
# Note: gnutls.connection.X509Credentials is really a
1684
777
# generic GnuTLS certificate credentials object so long as
1685
778
# no X.509 keys are added to it. Therefore, we can use it
1686
779
# here despite using OpenPGP certificates.
1687
780
1688
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1689
# "+AES-256-CBC", "+SHA1",
1690
# "+COMP-NULL", "+CTYPE-OPENPGP",
1691
# "+DHE-DSS"))
781
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
782
# u"+AES-256-CBC", u"+SHA1",
783
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
784
# u"+DHE-DSS"))
1692
785
# Use a fallback default, since this MUST be set.
1693
786
priority = self.server.gnutls_priority
1694
787
if priority is None:
1695
priority = "NORMAL"
788
priority = u"NORMAL"
1696
789
(gnutls.library.functions
1697
790
.gnutls_priority_set_direct(session._c_object,
1698
791
priority, None))
1699
792
1700
# Start communication using the Mandos protocol
1701
# Get protocol number
1702
line = self.request.makefile().readline()
1703
logger.debug("Protocol version: %r", line)
1704
try:
1705
if int(line.strip().split()[0]) > 1:
1706
raise RuntimeError(line)
1707
except (ValueError, IndexError, RuntimeError) as error:
1708
logger.error("Unknown protocol version: %s", error)
1709
return
1710
1711
# Start GnuTLS connection
1712
793
try:
1713
794
session.handshake()
1714
except gnutls.errors.GNUTLSError as error:
1715
logger.warning("Handshake failed: %s", error)
795
except gnutls.errors.GNUTLSError, error:
796
logger.warning(u"Handshake failed: %s", error)
1716
797
# Do not run session.bye() here: the session is not
1717
798
# established. Just abandon the request.
1718
799
return
1719
logger.debug("Handshake succeeded")
1720
1721
approval_required = False
800
logger.debug(u"Handshake succeeded")
1722
801
try:
1723
try:
1724
fpr = self.fingerprint(self.peer_certificate
1725
(session))
1726
except (TypeError,
1727
gnutls.errors.GNUTLSError) as error:
1728
logger.warning("Bad certificate: %s", error)
1729
return
1730
logger.debug("Fingerprint: %s", fpr)
1731
1732
try:
1733
client = ProxyClient(child_pipe, fpr,
1734
self.client_address)
1735
except KeyError:
1736
return
1737
1738
if client.approval_delay:
1739
delay = client.approval_delay
1740
client.approvals_pending += 1
1741
approval_required = True
1742
1743
while True:
1744
if not client.enabled:
1745
logger.info("Client %s is disabled",
1746
client.name)
1747
if self.server.use_dbus:
1748
# Emit D-Bus signal
1749
client.Rejected("Disabled")
1750
return
1751
1752
if client.approved or not client.approval_delay:
1753
#We are approved or approval is disabled
1754
break
1755
elif client.approved is None:
1756
logger.info("Client %s needs approval",
1757
client.name)
1758
if self.server.use_dbus:
1759
# Emit D-Bus signal
1760
client.NeedApproval(
1761
client.approval_delay_milliseconds(),
1762
client.approved_by_default)
1763
else:
1764
logger.warning("Client %s was not approved",
1765
client.name)
1766
if self.server.use_dbus:
1767
# Emit D-Bus signal
1768
client.Rejected("Denied")
1769
return
1770
1771
#wait until timeout or approved
1772
time = datetime.datetime.now()
1773
client.changedstate.acquire()
1774
client.changedstate.wait(
1775
float(timedelta_to_milliseconds(delay)
1776
/ 1000))
1777
client.changedstate.release()
1778
time2 = datetime.datetime.now()
1779
if (time2 - time) >= delay:
1780
if not client.approved_by_default:
1781
logger.warning("Client %s timed out while"
1782
" waiting for approval",
1783
client.name)
1784
if self.server.use_dbus:
1785
# Emit D-Bus signal
1786
client.Rejected("Approval timed out")
1787
return
1788
else:
1789
break
1790
else:
1791
delay -= time2 - time
1792
1793
sent_size = 0
1794
while sent_size < len(client.secret):
1795
try:
1796
sent = session.send(client.secret[sent_size:])
1797
except gnutls.errors.GNUTLSError as error:
1798
logger.warning("gnutls send failed",
1799
exc_info=error)
1800
return
1801
logger.debug("Sent: %d, remaining: %d",
1802
sent, len(client.secret)
1803
- (sent_size + sent))
1804
sent_size += sent
1805
1806
logger.info("Sending secret to %s", client.name)
1807
# bump the timeout using extended_timeout
1808
client.bump_timeout(client.extended_timeout)
1809
if self.server.use_dbus:
1810
# Emit D-Bus signal
1811
client.GotSecret()
802
fpr = self.fingerprint(self.peer_certificate(session))
803
except (TypeError, gnutls.errors.GNUTLSError), error:
804
logger.warning(u"Bad certificate: %s", error)
805
session.bye()
806
return
807
logger.debug(u"Fingerprint: %s", fpr)
1812
808
1813
finally:
1814
if approval_required:
1815
client.approvals_pending -= 1
1816
try:
1817
session.bye()
1818
except gnutls.errors.GNUTLSError as error:
1819
logger.warning("GnuTLS bye failed",
1820
exc_info=error)
809
for c in self.server.clients:
810
if c.fingerprint == fpr:
811
client = c
812
break
813
else:
814
ipc.write(u"NOTFOUND %s %s\n"
815
% (fpr, unicode(self.client_address)))
816
session.bye()
817
return
818
# Have to check if client.still_valid(), since it is
819
# possible that the client timed out while establishing
820
# the GnuTLS session.
821
if not client.still_valid():
822
ipc.write(u"INVALID %s\n" % client.name)
823
session.bye()
824
return
825
ipc.write(u"SENDING %s\n" % client.name)
826
sent_size = 0
827
while sent_size < len(client.secret):
828
sent = session.send(client.secret[sent_size:])
829
logger.debug(u"Sent: %d, remaining: %d",
830
sent, len(client.secret)
831
- (sent_size + sent))
832
sent_size += sent
833
session.bye()
1821
834
1822
835
@staticmethod
1823
836
def peer_certificate(session):
1833
846
.gnutls_certificate_get_peers
1834
847
(session._c_object, ctypes.byref(list_size)))
1835
848
if not bool(cert_list) and list_size.value != 0:
1836
raise gnutls.errors.GNUTLSError("error getting peer"
1837
" certificate")
849
raise gnutls.errors.GNUTLSError(u"error getting peer"
850
u" certificate")
1838
851
if list_size.value == 0:
1839
852
return None
1840
853
cert = cert_list[0]
1866
879
if crtverify.value != 0:
1867
880
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1868
881
raise (gnutls.errors.CertificateSecurityError
1869
("Verify failed"))
882
(u"Verify failed"))
1870
883
# New buffer for the fingerprint
1871
884
buf = ctypes.create_string_buffer(20)
1872
885
buf_len = ctypes.c_size_t()
1879
892
# Convert the buffer to a Python bytestring
1880
893
fpr = ctypes.string_at(buf, buf_len.value)
1881
894
# Convert the bytestring to hexadecimal notation
1882
hex_fpr = binascii.hexlify(fpr).upper()
895
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1883
896
return hex_fpr
1884
897
1885
898
1886
class MultiprocessingMixIn(object):
1887
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1888
def sub_process_main(self, request, address):
1889
try:
1890
self.finish_request(request, address)
1891
except Exception:
1892
self.handle_error(request, address)
1893
self.close_request(request)
1894
1895
def process_request(self, request, address):
1896
"""Start a new process to process the request."""
1897
proc = multiprocessing.Process(target = self.sub_process_main,
1898
args = (request, address))
1899
proc.start()
1900
return proc
1901
1902
1903
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1904
""" adds a pipe to the MixIn """
899
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
900
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1905
901
def process_request(self, request, client_address):
1906
902
"""Overrides and wraps the original process_request().
1907
903
1908
904
This function creates a new pipe in self.pipe
1909
905
"""
1910
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1911
1912
proc = MultiprocessingMixIn.process_request(self, request,
1913
client_address)
1914
self.child_pipe.close()
1915
self.add_pipe(parent_pipe, proc)
1916
1917
def add_pipe(self, parent_pipe, proc):
906
self.pipe = os.pipe()
907
super(ForkingMixInWithPipe,
908
self).process_request(request, client_address)
909
os.close(self.pipe[1]) # close write end
910
self.add_pipe(self.pipe[0])
911
def add_pipe(self, pipe):
1918
912
"""Dummy function; override as necessary"""
1919
raise NotImplementedError()
1920
1921
1922
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
913
os.close(pipe)
914
915
916
class IPv6_TCPServer(ForkingMixInWithPipe,
1923
917
socketserver.TCPServer, object):
1924
918
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1925
919
1929
923
use_ipv6: Boolean; to use IPv6 or not
1930
924
"""
1931
925
def __init__(self, server_address, RequestHandlerClass,
1932
interface=None, use_ipv6=True, socketfd=None):
1933
"""If socketfd is set, use that file descriptor instead of
1934
creating a new one with socket.socket().
1935
"""
926
interface=None, use_ipv6=True):
1936
927
self.interface = interface
1937
928
if use_ipv6:
1938
929
self.address_family = socket.AF_INET6
1939
if socketfd is not None:
1940
# Save the file descriptor
1941
self.socketfd = socketfd
1942
# Save the original socket.socket() function
1943
self.socket_socket = socket.socket
1944
# To implement --socket, we monkey patch socket.socket.
1945
#
1946
# (When socketserver.TCPServer is a new-style class, we
1947
# could make self.socket into a property instead of monkey
1948
# patching socket.socket.)
1949
#
1950
# Create a one-time-only replacement for socket.socket()
1951
@functools.wraps(socket.socket)
1952
def socket_wrapper(*args, **kwargs):
1953
# Restore original function so subsequent calls are
1954
# not affected.
1955
socket.socket = self.socket_socket
1956
del self.socket_socket
1957
# This time only, return a new socket object from the
1958
# saved file descriptor.
1959
return socket.fromfd(self.socketfd, *args, **kwargs)
1960
# Replace socket.socket() function with wrapper
1961
socket.socket = socket_wrapper
1962
# The socketserver.TCPServer.__init__ will call
1963
# socket.socket(), which might be our replacement,
1964
# socket_wrapper(), if socketfd was set.
1965
930
socketserver.TCPServer.__init__(self, server_address,
1966
931
RequestHandlerClass)
1967
1968
932
def server_bind(self):
1969
933
"""This overrides the normal server_bind() function
1970
934
to bind to an interface if one was specified, and also NOT to
1971
935
bind to an address or port if they were not specified."""
1972
936
if self.interface is not None:
1973
937
if SO_BINDTODEVICE is None:
1974
logger.error("SO_BINDTODEVICE does not exist;"
1975
" cannot bind to interface %s",
938
logger.error(u"SO_BINDTODEVICE does not exist;"
939
u" cannot bind to interface %s",
1976
940
self.interface)
1977
941
else:
1978
942
try:
1979
943
self.socket.setsockopt(socket.SOL_SOCKET,
1980
944
SO_BINDTODEVICE,
1981
str(self.interface + '\0'))
1982
except socket.error as error:
1983
if error.errno == errno.EPERM:
1984
logger.error("No permission to bind to"
1985
" interface %s", self.interface)
1986
elif error.errno == errno.ENOPROTOOPT:
1987
logger.error("SO_BINDTODEVICE not available;"
1988
" cannot bind to interface %s",
1989
self.interface)
1990
elif error.errno == errno.ENODEV:
1991
logger.error("Interface %s does not exist,"
1992
" cannot bind", self.interface)
945
str(self.interface
946
+ u'\0'))
947
except socket.error, error:
948
if error[0] == errno.EPERM:
949
logger.error(u"No permission to"
950
u" bind to interface %s",
951
self.interface)
952
elif error[0] == errno.ENOPROTOOPT:
953
logger.error(u"SO_BINDTODEVICE not available;"
954
u" cannot bind to interface %s",
955
self.interface)
1993
956
else:
1994
957
raise
1995
958
# Only bind(2) the socket if we really need to.
1996
959
if self.server_address[0] or self.server_address[1]:
1997
960
if not self.server_address[0]:
1998
961
if self.address_family == socket.AF_INET6:
1999
any_address = "::" # in6addr_any
962
any_address = u"::" # in6addr_any
2000
963
else:
2001
any_address = "0.0.0.0" # INADDR_ANY
964
any_address = socket.INADDR_ANY
2002
965
self.server_address = (any_address,
2003
966
self.server_address[1])
2004
967
elif not self.server_address[1]:
2020
983
clients: set of Client objects
2021
984
gnutls_priority GnuTLS priority string
2022
985
use_dbus: Boolean; to emit D-Bus signals or not
986
clients: set of Client objects
987
gnutls_priority GnuTLS priority string
988
use_dbus: Boolean; to emit D-Bus signals or not
2023
989
2024
990
Assumes a gobject.MainLoop event loop.
2025
991
"""
2026
992
def __init__(self, server_address, RequestHandlerClass,
2027
993
interface=None, use_ipv6=True, clients=None,
2028
gnutls_priority=None, use_dbus=True, socketfd=None):
994
gnutls_priority=None, use_dbus=True):
2029
995
self.enabled = False
2030
996
self.clients = clients
2031
997
if self.clients is None:
2032
self.clients = {}
998
self.clients = set()
2033
999
self.use_dbus = use_dbus
2034
1000
self.gnutls_priority = gnutls_priority
2035
1001
IPv6_TCPServer.__init__(self, server_address,
2036
1002
RequestHandlerClass,
2037
1003
interface = interface,
2038
use_ipv6 = use_ipv6,
2039
socketfd = socketfd)
1004
use_ipv6 = use_ipv6)
2040
1005
def server_activate(self):
2041
1006
if self.enabled:
2042
1007
return socketserver.TCPServer.server_activate(self)
2043
2044
1008
def enable(self):
2045
1009
self.enabled = True
2046
2047
def add_pipe(self, parent_pipe, proc):
1010
def add_pipe(self, pipe):
2048
1011
# Call "handle_ipc" for both data and EOF events
2049
gobject.io_add_watch(parent_pipe.fileno(),
2050
gobject.IO_IN | gobject.IO_HUP,
2051
functools.partial(self.handle_ipc,
2052
parent_pipe =
2053
parent_pipe,
2054
proc = proc))
2055
2056
def handle_ipc(self, source, condition, parent_pipe=None,
2057
proc = None, client_object=None):
2058
# error, or the other end of multiprocessing.Pipe has closed
2059
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2060
# Wait for other process to exit
2061
proc.join()
2062
return False
2063
2064
# Read a request from the child
2065
request = parent_pipe.recv()
2066
command = request[0]
2067
2068
if command == 'init':
2069
fpr = request[1]
2070
address = request[2]
2071
2072
for c in self.clients.itervalues():
2073
if c.fingerprint == fpr:
2074
client = c
2075
break
2076
else:
2077
logger.info("Client not found for fingerprint: %s, ad"
2078
"dress: %s", fpr, address)
2079
if self.use_dbus:
2080
# Emit D-Bus signal
2081
mandos_dbus_service.ClientNotFound(fpr,
2082
address[0])
2083
parent_pipe.send(False)
2084
return False
2085
2086
gobject.io_add_watch(parent_pipe.fileno(),
2087
gobject.IO_IN | gobject.IO_HUP,
2088
functools.partial(self.handle_ipc,
2089
parent_pipe =
2090
parent_pipe,
2091
proc = proc,
2092
client_object =
2093
client))
2094
parent_pipe.send(True)
2095
# remove the old hook in favor of the new above hook on
2096
# same fileno
2097
return False
2098
if command == 'funcall':
2099
funcname = request[1]
2100
args = request[2]
2101
kwargs = request[3]
2102
2103
parent_pipe.send(('data', getattr(client_object,
2104
funcname)(*args,
2105
**kwargs)))
2106
2107
if command == 'getattr':
2108
attrname = request[1]
2109
if callable(client_object.__getattribute__(attrname)):
2110
parent_pipe.send(('function',))
2111
else:
2112
parent_pipe.send(('data', client_object
2113
.__getattribute__(attrname)))
2114
2115
if command == 'setattr':
2116
attrname = request[1]
2117
value = request[2]
2118
setattr(client_object, attrname, value)
2119
1012
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1013
self.handle_ipc)
1014
def handle_ipc(self, source, condition, file_objects={}):
1015
condition_names = {
1016
gobject.IO_IN: u"IN", # There is data to read.
1017
gobject.IO_OUT: u"OUT", # Data can be written (without
1018
# blocking).
1019
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1020
gobject.IO_ERR: u"ERR", # Error condition.
1021
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1022
# broken, usually for pipes and
1023
# sockets).
1024
}
1025
conditions_string = ' | '.join(name
1026
for cond, name in
1027
condition_names.iteritems()
1028
if cond & condition)
1029
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1030
conditions_string)
1031
1032
# Turn the pipe file descriptor into a Python file object
1033
if source not in file_objects:
1034
file_objects[source] = os.fdopen(source, u"r", 1)
1035
1036
# Read a line from the file object
1037
cmdline = file_objects[source].readline()
1038
if not cmdline: # Empty line means end of file
1039
# close the IPC pipe
1040
file_objects[source].close()
1041
del file_objects[source]
1042
1043
# Stop calling this function
1044
return False
1045
1046
logger.debug(u"IPC command: %r", cmdline)
1047
1048
# Parse and act on command
1049
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1050
1051
if cmd == u"NOTFOUND":
1052
logger.warning(u"Client not found for fingerprint: %s",
1053
args)
1054
if self.use_dbus:
1055
# Emit D-Bus signal
1056
mandos_dbus_service.ClientNotFound(args)
1057
elif cmd == u"INVALID":
1058
for client in self.clients:
1059
if client.name == args:
1060
logger.warning(u"Client %s is invalid", args)
1061
if self.use_dbus:
1062
# Emit D-Bus signal
1063
client.Rejected()
1064
break
1065
else:
1066
logger.error(u"Unknown client %s is invalid", args)
1067
elif cmd == u"SENDING":
1068
for client in self.clients:
1069
if client.name == args:
1070
logger.info(u"Sending secret to %s", client.name)
1071
client.checked_ok()
1072
if self.use_dbus:
1073
# Emit D-Bus signal
1074
client.ReceivedSecret()
1075
break
1076
else:
1077
logger.error(u"Sending secret to unknown client %s",
1078
args)
1079
else:
1080
logger.error(u"Unknown IPC command: %r", cmdline)
1081
1082
# Keep calling this function
2120
1083
return True
2121
1084
2122
1085
2123
def rfc3339_duration_to_delta(duration):
2124
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2125
2126
>>> rfc3339_duration_to_delta("P7D")
2127
datetime.timedelta(7)
2128
>>> rfc3339_duration_to_delta("PT60S")
2129
datetime.timedelta(0, 60)
2130
>>> rfc3339_duration_to_delta("PT60M")
2131
datetime.timedelta(0, 3600)
2132
>>> rfc3339_duration_to_delta("PT24H")
2133
datetime.timedelta(1)
2134
>>> rfc3339_duration_to_delta("P1W")
2135
datetime.timedelta(7)
2136
>>> rfc3339_duration_to_delta("PT5M30S")
2137
datetime.timedelta(0, 330)
2138
>>> rfc3339_duration_to_delta("P1DT3M20S")
2139
datetime.timedelta(1, 200)
2140
"""
2141
2142
# Parsing an RFC 3339 duration with regular expressions is not
2143
# possible - there would have to be multiple places for the same
2144
# values, like seconds. The current code, while more esoteric, is
2145
# cleaner without depending on a parsing library. If Python had a
2146
# built-in library for parsing we would use it, but we'd like to
2147
# avoid excessive use of external libraries.
2148
2149
# New type for defining tokens, syntax, and semantics all-in-one
2150
Token = collections.namedtuple("Token",
2151
("regexp", # To match token; if
2152
# "value" is not None,
2153
# must have a "group"
2154
# containing digits
2155
"value", # datetime.timedelta or
2156
# None
2157
"followers")) # Tokens valid after
2158
# this token
2159
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2160
# the "duration" ABNF definition in RFC 3339, Appendix A.
2161
token_end = Token(re.compile(r"$"), None, frozenset())
2162
token_second = Token(re.compile(r"(\d+)S"),
2163
datetime.timedelta(seconds=1),
2164
frozenset((token_end,)))
2165
token_minute = Token(re.compile(r"(\d+)M"),
2166
datetime.timedelta(minutes=1),
2167
frozenset((token_second, token_end)))
2168
token_hour = Token(re.compile(r"(\d+)H"),
2169
datetime.timedelta(hours=1),
2170
frozenset((token_minute, token_end)))
2171
token_time = Token(re.compile(r"T"),
2172
None,
2173
frozenset((token_hour, token_minute,
2174
token_second)))
2175
token_day = Token(re.compile(r"(\d+)D"),
2176
datetime.timedelta(days=1),
2177
frozenset((token_time, token_end)))
2178
token_month = Token(re.compile(r"(\d+)M"),
2179
datetime.timedelta(weeks=4),
2180
frozenset((token_day, token_end)))
2181
token_year = Token(re.compile(r"(\d+)Y"),
2182
datetime.timedelta(weeks=52),
2183
frozenset((token_month, token_end)))
2184
token_week = Token(re.compile(r"(\d+)W"),
2185
datetime.timedelta(weeks=1),
2186
frozenset((token_end,)))
2187
token_duration = Token(re.compile(r"P"), None,
2188
frozenset((token_year, token_month,
2189
token_day, token_time,
2190
token_week))),
2191
# Define starting values
2192
value = datetime.timedelta() # Value so far
2193
found_token = None
2194
followers = frozenset(token_duration,) # Following valid tokens
2195
s = duration # String left to parse
2196
# Loop until end token is found
2197
while found_token is not token_end:
2198
# Search for any currently valid tokens
2199
for token in followers:
2200
match = token.regexp.match(s)
2201
if match is not None:
2202
# Token found
2203
if token.value is not None:
2204
# Value found, parse digits
2205
factor = int(match.group(1), 10)
2206
# Add to value so far
2207
value += factor * token.value
2208
# Strip token from string
2209
s = token.regexp.sub("", s, 1)
2210
# Go to found token
2211
found_token = token
2212
# Set valid next tokens
2213
followers = found_token.followers
2214
break
2215
else:
2216
# No currently valid tokens were found
2217
raise ValueError("Invalid RFC 3339 duration")
2218
# End token found
2219
return value
2220
2221
2222
1086
def string_to_delta(interval):
2223
1087
"""Parse a string and return a datetime.timedelta
2224
1088
2225
>>> string_to_delta('7d')
1089
>>> string_to_delta(u'7d')
2226
1090
datetime.timedelta(7)
2227
>>> string_to_delta('60s')
1091
>>> string_to_delta(u'60s')
2228
1092
datetime.timedelta(0, 60)
2229
>>> string_to_delta('60m')
1093
>>> string_to_delta(u'60m')
2230
1094
datetime.timedelta(0, 3600)
2231
>>> string_to_delta('24h')
1095
>>> string_to_delta(u'24h')
2232
1096
datetime.timedelta(1)
2233
>>> string_to_delta('1w')
1097
>>> string_to_delta(u'1w')
2234
1098
datetime.timedelta(7)
2235
>>> string_to_delta('5m 30s')
1099
>>> string_to_delta(u'5m 30s')
2236
1100
datetime.timedelta(0, 330)
2237
1101
"""
2238
2239
try:
2240
return rfc3339_duration_to_delta(interval)
2241
except ValueError:
2242
pass
2243
2244
1102
timevalue = datetime.timedelta(0)
2245
1103
for s in interval.split():
2246
1104
try:
2247
1105
suffix = unicode(s[-1])
2248
1106
value = int(s[:-1])
2249
if suffix == "d":
1107
if suffix == u"d":
2250
1108
delta = datetime.timedelta(value)
2251
elif suffix == "s":
1109
elif suffix == u"s":
2252
1110
delta = datetime.timedelta(0, value)
2253
elif suffix == "m":
1111
elif suffix == u"m":
2254
1112
delta = datetime.timedelta(0, 0, 0, 0, value)
2255
elif suffix == "h":
1113
elif suffix == u"h":
2256
1114
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2257
elif suffix == "w":
1115
elif suffix == u"w":
2258
1116
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2259
1117
else:
2260
raise ValueError("Unknown suffix {0!r}"
2261
.format(suffix))
2262
except IndexError as e:
2263
raise ValueError(*(e.args))
1118
raise ValueError
1119
except (ValueError, IndexError):
1120
raise ValueError
2264
1121
timevalue += delta
2265
1122
return timevalue
2266
1123
2267
1124
1125
def if_nametoindex(interface):
1126
"""Call the C function if_nametoindex(), or equivalent
1127
1128
Note: This function cannot accept a unicode string."""
1129
global if_nametoindex
1130
try:
1131
if_nametoindex = (ctypes.cdll.LoadLibrary
1132
(ctypes.util.find_library(u"c"))
1133
.if_nametoindex)
1134
except (OSError, AttributeError):
1135
logger.warning(u"Doing if_nametoindex the hard way")
1136
def if_nametoindex(interface):
1137
"Get an interface index the hard way, i.e. using fcntl()"
1138
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1139
with closing(socket.socket()) as s:
1140
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1141
struct.pack(str(u"16s16x"),
1142
interface))
1143
interface_index = struct.unpack(str(u"I"),
1144
ifreq[16:20])[0]
1145
return interface_index
1146
return if_nametoindex(interface)
1147
1148
2268
1149
def daemon(nochdir = False, noclose = False):
2269
1150
"""See daemon(3). Standard BSD Unix function.
2270
1151
2273
1154
sys.exit()
2274
1155
os.setsid()
2275
1156
if not nochdir:
2276
os.chdir("/")
1157
os.chdir(u"/")
2277
1158
if os.fork():
2278
1159
sys.exit()
2279
1160
if not noclose:
2280
1161
# Close all standard open file descriptors
2281
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1162
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2282
1163
if not stat.S_ISCHR(os.fstat(null).st_mode):
2283
1164
raise OSError(errno.ENODEV,
2284
"{0} not a character device"
2285
.format(os.devnull))
1165
u"/dev/null not a character device")
2286
1166
os.dup2(null, sys.stdin.fileno())
2287
1167
os.dup2(null, sys.stdout.fileno())
2288
1168
os.dup2(null, sys.stderr.fileno())
2292
1172
2293
1173
def main():
2294
1174
2295
##################################################################
1175
######################################################################
2296
1176
# Parsing of options, both command line and config file
2297
1177
2298
parser = argparse.ArgumentParser()
2299
parser.add_argument("-v", "--version", action="version",
2300
version = "%(prog)s {0}".format(version),
2301
help="show version number and exit")
2302
parser.add_argument("-i", "--interface", metavar="IF",
2303
help="Bind to interface IF")
2304
parser.add_argument("-a", "--address",
2305
help="Address to listen for requests on")
2306
parser.add_argument("-p", "--port", type=int,
2307
help="Port number to receive requests on")
2308
parser.add_argument("--check", action="store_true",
2309
help="Run self-test")
2310
parser.add_argument("--debug", action="store_true",
2311
help="Debug mode; run in foreground and log"
2312
" to terminal", default=None)
2313
parser.add_argument("--debuglevel", metavar="LEVEL",
2314
help="Debug level for stdout output")
2315
parser.add_argument("--priority", help="GnuTLS"
2316
" priority string (see GnuTLS documentation)")
2317
parser.add_argument("--servicename",
2318
metavar="NAME", help="Zeroconf service name")
2319
parser.add_argument("--configdir",
2320
default="/etc/mandos", metavar="DIR",
2321
help="Directory to search for configuration"
2322
" files")
2323
parser.add_argument("--no-dbus", action="store_false",
2324
dest="use_dbus", help="Do not provide D-Bus"
2325
" system bus interface", default=None)
2326
parser.add_argument("--no-ipv6", action="store_false",
2327
dest="use_ipv6", help="Do not use IPv6",
2328
default=None)
2329
parser.add_argument("--no-restore", action="store_false",
2330
dest="restore", help="Do not restore stored"
2331
" state", default=None)
2332
parser.add_argument("--socket", type=int,
2333
help="Specify a file descriptor to a network"
2334
" socket to use instead of creating one")
2335
parser.add_argument("--statedir", metavar="DIR",
2336
help="Directory to save/restore state in")
2337
parser.add_argument("--foreground", action="store_true",
2338
help="Run in foreground", default=None)
2339
2340
options = parser.parse_args()
1178
parser = optparse.OptionParser(version = "%%prog %s" % version)
1179
parser.add_option("-i", u"--interface", type=u"string",
1180
metavar="IF", help=u"Bind to interface IF")
1181
parser.add_option("-a", u"--address", type=u"string",
1182
help=u"Address to listen for requests on")
1183
parser.add_option("-p", u"--port", type=u"int",
1184
help=u"Port number to receive requests on")
1185
parser.add_option("--check", action=u"store_true",
1186
help=u"Run self-test")
1187
parser.add_option("--debug", action=u"store_true",
1188
help=u"Debug mode; run in foreground and log to"
1189
u" terminal")
1190
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1191
u" priority string (see GnuTLS documentation)")
1192
parser.add_option("--servicename", type=u"string",
1193
metavar=u"NAME", help=u"Zeroconf service name")
1194
parser.add_option("--configdir", type=u"string",
1195
default=u"/etc/mandos", metavar=u"DIR",
1196
help=u"Directory to search for configuration"
1197
u" files")
1198
parser.add_option("--no-dbus", action=u"store_false",
1199
dest=u"use_dbus",
1200
help=optparse.SUPPRESS_HELP) # XXX: Not done yet
1201
parser.add_option("--no-ipv6", action=u"store_false",
1202
dest=u"use_ipv6", help=u"Do not use IPv6")
1203
options = parser.parse_args()[0]
2341
1204
2342
1205
if options.check:
2343
1206
import doctest
2345
1208
sys.exit()
2346
1209
2347
1210
# Default values for config file for server-global settings
2348
server_defaults = { "interface": "",
2349
"address": "",
2350
"port": "",
2351
"debug": "False",
2352
"priority":
2353
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2354
"servicename": "Mandos",
2355
"use_dbus": "True",
2356
"use_ipv6": "True",
2357
"debuglevel": "",
2358
"restore": "True",
2359
"socket": "",
2360
"statedir": "/var/lib/mandos",
2361
"foreground": "False",
1211
server_defaults = { u"interface": u"",
1212
u"address": u"",
1213
u"port": u"",
1214
u"debug": u"False",
1215
u"priority":
1216
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1217
u"servicename": u"Mandos",
1218
u"use_dbus": u"True",
1219
u"use_ipv6": u"True",
2362
1220
}
2363
1221
2364
1222
# Parse config file for server-global settings
2365
1223
server_config = configparser.SafeConfigParser(server_defaults)
2366
1224
del server_defaults
2367
1225
server_config.read(os.path.join(options.configdir,
2368
"mandos.conf"))
1226
u"mandos.conf"))
2369
1227
# Convert the SafeConfigParser object to a dict
2370
1228
server_settings = server_config.defaults()
2371
1229
# Use the appropriate methods on the non-string config options
2372
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2373
server_settings[option] = server_config.getboolean("DEFAULT",
1230
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1231
server_settings[option] = server_config.getboolean(u"DEFAULT",
2374
1232
option)
2375
1233
if server_settings["port"]:
2376
server_settings["port"] = server_config.getint("DEFAULT",
2377
"port")
2378
if server_settings["socket"]:
2379
server_settings["socket"] = server_config.getint("DEFAULT",
2380
"socket")
2381
# Later, stdin will, and stdout and stderr might, be dup'ed
2382
# over with an opened os.devnull. But we don't want this to
2383
# happen with a supplied network socket.
2384
if 0 <= server_settings["socket"] <= 2:
2385
server_settings["socket"] = os.dup(server_settings
2386
["socket"])
1234
server_settings["port"] = server_config.getint(u"DEFAULT",
1235
u"port")
2387
1236
del server_config
2388
1237
2389
1238
# Override the settings from the config file with command line
2390
1239
# options, if set.
2391
for option in ("interface", "address", "port", "debug",
2392
"priority", "servicename", "configdir",
2393
"use_dbus", "use_ipv6", "debuglevel", "restore",
2394
"statedir", "socket", "foreground"):
1240
for option in (u"interface", u"address", u"port", u"debug",
1241
u"priority", u"servicename", u"configdir",
1242
u"use_dbus", u"use_ipv6"):
2395
1243
value = getattr(options, option)
2396
1244
if value is not None:
2397
1245
server_settings[option] = value
2400
1248
for option in server_settings.keys():
2401
1249
if type(server_settings[option]) is str:
2402
1250
server_settings[option] = unicode(server_settings[option])
2403
# Force all boolean options to be boolean
2404
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2405
"foreground"):
2406
server_settings[option] = bool(server_settings[option])
2407
# Debug implies foreground
2408
if server_settings["debug"]:
2409
server_settings["foreground"] = True
2410
1251
# Now we have our good server settings in "server_settings"
2411
1252
2412
1253
##################################################################
2413
1254
2414
1255
# For convenience
2415
debug = server_settings["debug"]
2416
debuglevel = server_settings["debuglevel"]
2417
use_dbus = server_settings["use_dbus"]
2418
use_ipv6 = server_settings["use_ipv6"]
2419
stored_state_path = os.path.join(server_settings["statedir"],
2420
stored_state_file)
2421
foreground = server_settings["foreground"]
2422
2423
if debug:
2424
initlogger(debug, logging.DEBUG)
2425
else:
2426
if not debuglevel:
2427
initlogger(debug)
2428
else:
2429
level = getattr(logging, debuglevel.upper())
2430
initlogger(debug, level)
2431
2432
if server_settings["servicename"] != "Mandos":
1256
debug = server_settings[u"debug"]
1257
use_dbus = server_settings[u"use_dbus"]
1258
use_dbus = False # XXX: Not done yet
1259
use_ipv6 = server_settings[u"use_ipv6"]
1260
1261
if not debug:
1262
syslogger.setLevel(logging.WARNING)
1263
console.setLevel(logging.WARNING)
1264
1265
if server_settings[u"servicename"] != u"Mandos":
2433
1266
syslogger.setFormatter(logging.Formatter
2434
('Mandos ({0}) [%(process)d]:'
2435
' %(levelname)s: %(message)s'
2436
.format(server_settings
2437
["servicename"])))
1267
(u'Mandos (%s) [%%(process)d]:'
1268
u' %%(levelname)s: %%(message)s'
1269
% server_settings[u"servicename"]))
2438
1270
2439
1271
# Parse config file with clients
2440
client_config = configparser.SafeConfigParser(Client
2441
.client_defaults)
2442
client_config.read(os.path.join(server_settings["configdir"],
2443
"clients.conf"))
1272
client_defaults = { u"timeout": u"1h",
1273
u"interval": u"5m",
1274
u"checker": u"fping -q -- %%(host)s",
1275
u"host": u"",
1276
}
1277
client_config = configparser.SafeConfigParser(client_defaults)
1278
client_config.read(os.path.join(server_settings[u"configdir"],
1279
u"clients.conf"))
2444
1280
2445
1281
global mandos_dbus_service
2446
1282
mandos_dbus_service = None
2447
1283
2448
tcp_server = MandosServer((server_settings["address"],
2449
server_settings["port"]),
1284
tcp_server = MandosServer((server_settings[u"address"],
1285
server_settings[u"port"]),
2450
1286
ClientHandler,
2451
interface=(server_settings["interface"]
2452
or None),
1287
interface=server_settings[u"interface"],
2453
1288
use_ipv6=use_ipv6,
2454
1289
gnutls_priority=
2455
server_settings["priority"],
2456
use_dbus=use_dbus,
2457
socketfd=(server_settings["socket"]
2458
or None))
2459
if not foreground:
2460
pidfilename = "/run/mandos.pid"
2461
if not os.path.isdir("/run/."):
2462
pidfilename = "/var/run/mandos.pid"
2463
pidfile = None
2464
try:
2465
pidfile = open(pidfilename, "w")
2466
except IOError as e:
2467
logger.error("Could not open file %r", pidfilename,
2468
exc_info=e)
1290
server_settings[u"priority"],
1291
use_dbus=use_dbus)
1292
pidfilename = u"/var/run/mandos.pid"
1293
try:
1294
pidfile = open(pidfilename, u"w")
1295
except IOError:
1296
logger.error(u"Could not open file %r", pidfilename)
2469
1297
2470
for name in ("_mandos", "mandos", "nobody"):
1298
try:
1299
uid = pwd.getpwnam(u"_mandos").pw_uid
1300
gid = pwd.getpwnam(u"_mandos").pw_gid
1301
except KeyError:
2471
1302
try:
2472
uid = pwd.getpwnam(name).pw_uid
2473
gid = pwd.getpwnam(name).pw_gid
2474
break
1303
uid = pwd.getpwnam(u"mandos").pw_uid
1304
gid = pwd.getpwnam(u"mandos").pw_gid
2475
1305
except KeyError:
2476
continue
2477
else:
2478
uid = 65534
2479
gid = 65534
1306
try:
1307
uid = pwd.getpwnam(u"nobody").pw_uid
1308
gid = pwd.getpwnam(u"nobody").pw_gid
1309
except KeyError:
1310
uid = 65534
1311
gid = 65534
2480
1312
try:
2481
1313
os.setgid(gid)
2482
1314
os.setuid(uid)
2483
except OSError as error:
2484
if error.errno != errno.EPERM:
2485
raise
1315
except OSError, error:
1316
if error[0] != errno.EPERM:
1317
raise error
2486
1318
1319
# Enable all possible GnuTLS debugging
2487
1320
if debug:
2488
# Enable all possible GnuTLS debugging
2489
2490
1321
# "Use a log level over 10 to enable all debugging options."
2491
1322
# - GnuTLS manual
2492
1323
gnutls.library.functions.gnutls_global_set_log_level(11)
2493
1324
2494
1325
@gnutls.library.types.gnutls_log_func
2495
1326
def debug_gnutls(level, string):
2496
logger.debug("GnuTLS: %s", string[:-1])
1327
logger.debug(u"GnuTLS: %s", string[:-1])
2497
1328
2498
1329
(gnutls.library.functions
2499
1330
.gnutls_global_set_log_function(debug_gnutls))
2500
2501
# Redirect stdin so all checkers get /dev/null
2502
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2503
os.dup2(null, sys.stdin.fileno())
2504
if null > 2:
2505
os.close(null)
2506
2507
# Need to fork before connecting to D-Bus
2508
if not foreground:
2509
# Close all input and output, do double fork, etc.
2510
daemon()
2511
2512
# multiprocessing will use threads, so before we use gobject we
2513
# need to inform gobject that threads will be used.
2514
gobject.threads_init()
2515
1331
2516
1332
global main_loop
2517
1333
# From the Avahi example code
2518
DBusGMainLoop(set_as_default=True)
1334
DBusGMainLoop(set_as_default=True )
2519
1335
main_loop = gobject.MainLoop()
2520
1336
bus = dbus.SystemBus()
2521
1337
# End of Avahi example code
2522
1338
if use_dbus:
2523
try:
2524
bus_name = dbus.service.BusName("se.recompile.Mandos",
2525
bus, do_not_queue=True)
2526
old_bus_name = (dbus.service.BusName
2527
("se.bsnet.fukt.Mandos", bus,
2528
do_not_queue=True))
2529
except dbus.exceptions.NameExistsException as e:
2530
logger.error("Disabling D-Bus:", exc_info=e)
2531
use_dbus = False
2532
server_settings["use_dbus"] = False
2533
tcp_server.use_dbus = False
1339
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2534
1340
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2535
service = AvahiServiceToSyslog(name =
2536
server_settings["servicename"],
2537
servicetype = "_mandos._tcp",
2538
protocol = protocol, bus = bus)
1341
service = AvahiService(name = server_settings[u"servicename"],
1342
servicetype = u"_mandos._tcp",
1343
protocol = protocol, bus = bus)
2539
1344
if server_settings["interface"]:
2540
1345
service.interface = (if_nametoindex
2541
(str(server_settings["interface"])))
2542
2543
global multiprocessing_manager
2544
multiprocessing_manager = multiprocessing.Manager()
1346
(str(server_settings[u"interface"])))
2545
1347
2546
1348
client_class = Client
2547
1349
if use_dbus:
2548
1350
client_class = functools.partial(ClientDBus, bus = bus)
2549
2550
client_settings = Client.config_parser(client_config)
2551
old_client_settings = {}
2552
clients_data = {}
2553
2554
# This is used to redirect stdout and stderr for checker processes
2555
global wnull
2556
wnull = open(os.devnull, "w") # A writable /dev/null
2557
# Only used if server is running in foreground but not in debug
2558
# mode
2559
if debug or not foreground:
2560
wnull.close()
2561
2562
# Get client data and settings from last running state.
2563
if server_settings["restore"]:
2564
try:
2565
with open(stored_state_path, "rb") as stored_state:
2566
clients_data, old_client_settings = (pickle.load
2567
(stored_state))
2568
os.remove(stored_state_path)
2569
except IOError as e:
2570
if e.errno == errno.ENOENT:
2571
logger.warning("Could not load persistent state: {0}"
2572
.format(os.strerror(e.errno)))
2573
else:
2574
logger.critical("Could not load persistent state:",
2575
exc_info=e)
2576
raise
2577
except EOFError as e:
2578
logger.warning("Could not load persistent state: "
2579
"EOFError:", exc_info=e)
2580
2581
with PGPEngine() as pgp:
2582
for client_name, client in clients_data.iteritems():
2583
# Skip removed clients
2584
if client_name not in client_settings:
2585
continue
2586
2587
# Decide which value to use after restoring saved state.
2588
# We have three different values: Old config file,
2589
# new config file, and saved state.
2590
# New config value takes precedence if it differs from old
2591
# config value, otherwise use saved state.
2592
for name, value in client_settings[client_name].items():
2593
try:
2594
# For each value in new config, check if it
2595
# differs from the old config value (Except for
2596
# the "secret" attribute)
2597
if (name != "secret" and
2598
value != old_client_settings[client_name]
2599
[name]):
2600
client[name] = value
2601
except KeyError:
2602
pass
2603
2604
# Clients who has passed its expire date can still be
2605
# enabled if its last checker was successful. Clients
2606
# whose checker succeeded before we stored its state is
2607
# assumed to have successfully run all checkers during
2608
# downtime.
2609
if client["enabled"]:
2610
if datetime.datetime.utcnow() >= client["expires"]:
2611
if not client["last_checked_ok"]:
2612
logger.warning(
2613
"disabling client {0} - Client never "
2614
"performed a successful checker"
2615
.format(client_name))
2616
client["enabled"] = False
2617
elif client["last_checker_status"] != 0:
2618
logger.warning(
2619
"disabling client {0} - Client "
2620
"last checker failed with error code {1}"
2621
.format(client_name,
2622
client["last_checker_status"]))
2623
client["enabled"] = False
2624
else:
2625
client["expires"] = (datetime.datetime
2626
.utcnow()
2627
+ client["timeout"])
2628
logger.debug("Last checker succeeded,"
2629
" keeping {0} enabled"
2630
.format(client_name))
2631
try:
2632
client["secret"] = (
2633
pgp.decrypt(client["encrypted_secret"],
2634
client_settings[client_name]
2635
["secret"]))
2636
except PGPError:
2637
# If decryption fails, we use secret from new settings
2638
logger.debug("Failed to decrypt {0} old secret"
2639
.format(client_name))
2640
client["secret"] = (
2641
client_settings[client_name]["secret"])
2642
2643
# Add/remove clients based on new changes made to config
2644
for client_name in (set(old_client_settings)
2645
- set(client_settings)):
2646
del clients_data[client_name]
2647
for client_name in (set(client_settings)
2648
- set(old_client_settings)):
2649
clients_data[client_name] = client_settings[client_name]
2650
2651
# Create all client objects
2652
for client_name, client in clients_data.iteritems():
2653
tcp_server.clients[client_name] = client_class(
2654
name = client_name, settings = client,
2655
server_settings = server_settings)
2656
1351
tcp_server.clients.update(set(
1352
client_class(name = section,
1353
config= dict(client_config.items(section)))
1354
for section in client_config.sections()))
2657
1355
if not tcp_server.clients:
2658
logger.warning("No clients defined")
2659
2660
if not foreground:
2661
if pidfile is not None:
2662
try:
2663
with pidfile:
2664
pid = os.getpid()
2665
pidfile.write(str(pid) + "\n".encode("utf-8"))
2666
except IOError:
2667
logger.error("Could not write to file %r with PID %d",
2668
pidfilename, pid)
1356
logger.warning(u"No clients defined")
1357
1358
if debug:
1359
# Redirect stdin so all checkers get /dev/null
1360
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1361
os.dup2(null, sys.stdin.fileno())
1362
if null > 2:
1363
os.close(null)
1364
else:
1365
# No console logging
1366
logger.removeHandler(console)
1367
# Close all input and output, do double fork, etc.
1368
daemon()
1369
1370
try:
1371
with closing(pidfile):
1372
pid = os.getpid()
1373
pidfile.write(str(pid) + "\n")
2669
1374
del pidfile
2670
del pidfilename
2671
1375
except IOError:
1376
logger.error(u"Could not write to file %r with PID %d",
1377
pidfilename, pid)
1378
except NameError:
1379
# "pidfile" was never created
1380
pass
1381
del pidfilename
1382
1383
def cleanup():
1384
"Cleanup function; run on exit"
1385
service.cleanup()
1386
1387
while tcp_server.clients:
1388
client = tcp_server.clients.pop()
1389
client.disable_hook = None
1390
client.disable()
1391
1392
atexit.register(cleanup)
1393
1394
if not debug:
1395
signal.signal(signal.SIGINT, signal.SIG_IGN)
2672
1396
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2673
1397
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2674
1398
2675
1399
if use_dbus:
2676
@alternate_dbus_interfaces({"se.recompile.Mandos":
2677
"se.bsnet.fukt.Mandos"})
2678
class MandosDBusService(DBusObjectWithProperties):
1400
class MandosDBusService(dbus.service.Object):
2679
1401
"""A D-Bus proxy object"""
2680
1402
def __init__(self):
2681
dbus.service.Object.__init__(self, bus, "/")
2682
_interface = "se.recompile.Mandos"
2683
2684
@dbus_interface_annotations(_interface)
2685
def _foo(self):
2686
return { "org.freedesktop.DBus.Property"
2687
".EmitsChangedSignal":
2688
"false"}
2689
2690
@dbus.service.signal(_interface, signature="o")
2691
def ClientAdded(self, objpath):
2692
"D-Bus signal"
2693
pass
2694
2695
@dbus.service.signal(_interface, signature="ss")
2696
def ClientNotFound(self, fingerprint, address):
2697
"D-Bus signal"
2698
pass
2699
2700
@dbus.service.signal(_interface, signature="os")
1403
dbus.service.Object.__init__(self, bus, u"/")
1404
_interface = u"se.bsnet.fukt.Mandos"
1405
1406
@dbus.service.signal(_interface, signature=u"oa{sv}")
1407
def ClientAdded(self, objpath, properties):
1408
"D-Bus signal"
1409
pass
1410
1411
@dbus.service.signal(_interface, signature=u"s")
1412
def ClientNotFound(self, fingerprint):
1413
"D-Bus signal"
1414
pass
1415
1416
@dbus.service.signal(_interface, signature=u"os")
2701
1417
def ClientRemoved(self, objpath, name):
2702
1418
"D-Bus signal"
2703
1419
pass
2704
1420
2705
@dbus.service.method(_interface, out_signature="ao")
1421
@dbus.service.method(_interface, out_signature=u"ao")
2706
1422
def GetAllClients(self):
2707
1423
"D-Bus method"
2708
1424
return dbus.Array(c.dbus_object_path
2709
for c in
2710
tcp_server.clients.itervalues())
1425
for c in tcp_server.clients)
2711
1426
2712
1427
@dbus.service.method(_interface,
2713
out_signature="a{oa{sv}}")
1428
out_signature=u"a{oa{sv}}")
2714
1429
def GetAllClientsWithProperties(self):
2715
1430
"D-Bus method"
2716
1431
return dbus.Dictionary(
2717
((c.dbus_object_path, c.GetAll(""))
2718
for c in tcp_server.clients.itervalues()),
2719
signature="oa{sv}")
1432
((c.dbus_object_path, c.GetAllProperties())
1433
for c in tcp_server.clients),
1434
signature=u"oa{sv}")
2720
1435
2721
@dbus.service.method(_interface, in_signature="o")
1436
@dbus.service.method(_interface, in_signature=u"o")
2722
1437
def RemoveClient(self, object_path):
2723
1438
"D-Bus method"
2724
for c in tcp_server.clients.itervalues():
1439
for c in tcp_server.clients:
2725
1440
if c.dbus_object_path == object_path:
2726
del tcp_server.clients[c.name]
1441
tcp_server.clients.remove(c)
2727
1442
c.remove_from_connection()
2728
1443
# Don't signal anything except ClientRemoved
2729
c.disable(quiet=True)
1444
c.disable(signal=False)
2730
1445
# Emit D-Bus signal
2731
1446
self.ClientRemoved(object_path, c.name)
2732
1447
return
2733
raise KeyError(object_path)
1448
raise KeyError
2734
1449
2735
1450
del _interface
2736
1451
2737
1452
mandos_dbus_service = MandosDBusService()
2738
1453
2739
def cleanup():
2740
"Cleanup function; run on exit"
2741
service.cleanup()
2742
2743
multiprocessing.active_children()
2744
wnull.close()
2745
if not (tcp_server.clients or client_settings):
2746
return
2747
2748
# Store client before exiting. Secrets are encrypted with key
2749
# based on what config file has. If config file is
2750
# removed/edited, old secret will thus be unrecovable.
2751
clients = {}
2752
with PGPEngine() as pgp:
2753
for client in tcp_server.clients.itervalues():
2754
key = client_settings[client.name]["secret"]
2755
client.encrypted_secret = pgp.encrypt(client.secret,
2756
key)
2757
client_dict = {}
2758
2759
# A list of attributes that can not be pickled
2760
# + secret.
2761
exclude = set(("bus", "changedstate", "secret",
2762
"checker", "server_settings"))
2763
for name, typ in (inspect.getmembers
2764
(dbus.service.Object)):
2765
exclude.add(name)
2766
2767
client_dict["encrypted_secret"] = (client
2768
.encrypted_secret)
2769
for attr in client.client_structure:
2770
if attr not in exclude:
2771
client_dict[attr] = getattr(client, attr)
2772
2773
clients[client.name] = client_dict
2774
del client_settings[client.name]["secret"]
2775
2776
try:
2777
with (tempfile.NamedTemporaryFile
2778
(mode='wb', suffix=".pickle", prefix='clients-',
2779
dir=os.path.dirname(stored_state_path),
2780
delete=False)) as stored_state:
2781
pickle.dump((clients, client_settings), stored_state)
2782
tempname=stored_state.name
2783
os.rename(tempname, stored_state_path)
2784
except (IOError, OSError) as e:
2785
if not debug:
2786
try:
2787
os.remove(tempname)
2788
except NameError:
2789
pass
2790
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2791
logger.warning("Could not save persistent state: {0}"
2792
.format(os.strerror(e.errno)))
2793
else:
2794
logger.warning("Could not save persistent state:",
2795
exc_info=e)
2796
raise
2797
2798
# Delete all clients, and settings from config
2799
while tcp_server.clients:
2800
name, client = tcp_server.clients.popitem()
2801
if use_dbus:
2802
client.remove_from_connection()
2803
# Don't signal anything except ClientRemoved
2804
client.disable(quiet=True)
2805
if use_dbus:
2806
# Emit D-Bus signal
2807
mandos_dbus_service.ClientRemoved(client
2808
.dbus_object_path,
2809
client.name)
2810
client_settings.clear()
2811
2812
atexit.register(cleanup)
2813
2814
for client in tcp_server.clients.itervalues():
1454
for client in tcp_server.clients:
2815
1455
if use_dbus:
2816
1456
# Emit D-Bus signal
2817
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2818
# Need to initiate checking of clients
2819
if client.enabled:
2820
client.init_checker()
1457
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1458
client.GetAllProperties())
1459
client.enable()
2821
1460
2822
1461
tcp_server.enable()
2823
1462
tcp_server.server_activate()
2825
1464
# Find out what port we got
2826
1465
service.port = tcp_server.socket.getsockname()[1]
2827
1466
if use_ipv6:
2828
logger.info("Now listening on address %r, port %d,"
2829
" flowinfo %d, scope_id %d",
2830
*tcp_server.socket.getsockname())
1467
logger.info(u"Now listening on address %r, port %d,"
1468
" flowinfo %d, scope_id %d"
1469
% tcp_server.socket.getsockname())
2831
1470
else: # IPv4
2832
logger.info("Now listening on address %r, port %d",
2833
*tcp_server.socket.getsockname())
1471
logger.info(u"Now listening on address %r, port %d"
1472
% tcp_server.socket.getsockname())
2834
1473
2835
1474
#service.interface = tcp_server.socket.getsockname()[3]
2836
1475
2838
1477
# From the Avahi example code
2839
1478
try:
2840
1479
service.activate()
2841
except dbus.exceptions.DBusException as error:
2842
logger.critical("D-Bus Exception", exc_info=error)
2843
cleanup()
1480
except dbus.exceptions.DBusException, error:
1481
logger.critical(u"DBusException: %s", error)
2844
1482
sys.exit(1)
2845
1483
# End of Avahi example code
2846
1484
2849
1487
(tcp_server.handle_request
2850
1488
(*args[2:], **kwargs) or True))
2851
1489
2852
logger.debug("Starting main loop")
1490
logger.debug(u"Starting main loop")
2853
1491
main_loop.run()
2854
except AvahiError as error:
2855
logger.critical("Avahi Error", exc_info=error)
2856
cleanup()
1492
except AvahiError, error:
1493
logger.critical(u"AvahiError: %s", error)
2857
1494
sys.exit(1)
2858
1495
except KeyboardInterrupt:
2859
1496
if debug:
2860
print("", file=sys.stderr)
2861
logger.debug("Server received KeyboardInterrupt")
2862
logger.debug("Server exiting")
2863
# Must run before the D-Bus bus name gets deregistered
2864
cleanup()
1497
print >> sys.stderr
1498
logger.debug(u"Server received KeyboardInterrupt")
1499
logger.debug(u"Server exiting")
2865
1500
2866
1501
if __name__ == '__main__':
2867
1502
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0