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- Committer: Teddy Hogeborn
- Date: 2015-08-10 16:19:28 UTC
- Revision ID: teddy@recompile.se-20150810161928-bnukog7l47j3pjix
Depend on Avahi and the network in the server's systemd service file.
* mandos.service ([Unit]/After): New; set to "network.target" and
"avahi-daemon.service".
([Unit]/RequisiteOverridable): New; set to "avahi-daemon.service".
* mandos.service ([Unit]/After): New; set to "network.target" and
"avahi-daemon.service".
([Unit]/RequisiteOverridable): New; set to "avahi-daemon.service".
- files added:
- DBUS-API
- debian/source
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
1
#!/usr/bin/python2.7
2
2
# -*- mode: python; coding: utf-8 -*-
3
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
14
# Copyright © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
31
# Contact the authors at <mandos@recompile.se>.
32
32
#
33
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
from future_builtins import *
38
39
try:
40
import SocketServer as socketserver
41
except ImportError:
42
import socketserver
37
43
import socket
38
import optparse
44
import argparse
39
45
import datetime
40
46
import errno
41
47
import gnutls.crypto
44
50
import gnutls.library.functions
45
51
import gnutls.library.constants
46
52
import gnutls.library.types
47
import ConfigParser as configparser
53
try:
54
import ConfigParser as configparser
55
except ImportError:
56
import configparser
48
57
import sys
49
58
import re
50
59
import os
55
64
import logging
56
65
import logging.handlers
57
66
import pwd
58
from contextlib import closing
67
import contextlib
59
68
import struct
60
69
import fcntl
61
70
import functools
71
try:
72
import cPickle as pickle
73
except ImportError:
74
import pickle
75
import multiprocessing
76
import types
77
import binascii
78
import tempfile
79
import itertools
80
import collections
81
import codecs
62
82
63
83
import dbus
64
84
import dbus.service
65
import gobject
85
try:
86
import gobject
87
except ImportError:
88
from gi.repository import GObject as gobject
66
89
import avahi
67
90
from dbus.mainloop.glib import DBusGMainLoop
68
91
import ctypes
69
92
import ctypes.util
93
import xml.dom.minidom
94
import inspect
70
95
71
96
try:
72
97
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
76
101
except ImportError:
77
102
SO_BINDTODEVICE = None
78
103
79
80
version = "1.0.11"
81
82
logger = logging.Logger(u'mandos')
83
syslogger = (logging.handlers.SysLogHandler
84
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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)
104
if sys.version_info.major == 2:
105
str = unicode
106
107
version = "1.6.9"
108
stored_state_file = "clients.pickle"
109
110
logger = logging.getLogger()
111
syslogger = None
112
113
try:
114
if_nametoindex = ctypes.cdll.LoadLibrary(
115
ctypes.util.find_library("c")).if_nametoindex
116
except (OSError, AttributeError):
117
118
def if_nametoindex(interface):
119
"Get an interface index the hard way, i.e. using fcntl()"
120
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
121
with contextlib.closing(socket.socket()) as s:
122
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
123
struct.pack(b"16s16x", interface))
124
interface_index = struct.unpack("I", ifreq[16:20])[0]
125
return interface_index
126
127
128
def initlogger(debug, level=logging.WARNING):
129
"""init logger and add loglevel"""
130
131
global syslogger
132
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
135
syslogger.setFormatter(logging.Formatter
136
('Mandos [%(process)d]: %(levelname)s:'
137
' %(message)s'))
138
logger.addHandler(syslogger)
139
140
if debug:
141
console = logging.StreamHandler()
142
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
143
' [%(process)d]:'
144
' %(levelname)s:'
145
' %(message)s'))
146
logger.addHandler(console)
147
logger.setLevel(level)
148
149
150
class PGPError(Exception):
151
"""Exception if encryption/decryption fails"""
152
pass
153
154
155
class PGPEngine(object):
156
"""A simple class for OpenPGP symmetric encryption & decryption"""
157
158
def __init__(self):
159
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
160
self.gnupgargs = ['--batch',
161
'--home', self.tempdir,
162
'--force-mdc',
163
'--quiet',
164
'--no-use-agent']
165
166
def __enter__(self):
167
return self
168
169
def __exit__(self, exc_type, exc_value, traceback):
170
self._cleanup()
171
return False
172
173
def __del__(self):
174
self._cleanup()
175
176
def _cleanup(self):
177
if self.tempdir is not None:
178
# Delete contents of tempdir
179
for root, dirs, files in os.walk(self.tempdir,
180
topdown = False):
181
for filename in files:
182
os.remove(os.path.join(root, filename))
183
for dirname in dirs:
184
os.rmdir(os.path.join(root, dirname))
185
# Remove tempdir
186
os.rmdir(self.tempdir)
187
self.tempdir = None
188
189
def password_encode(self, password):
190
# Passphrase can not be empty and can not contain newlines or
191
# NUL bytes. So we prefix it and hex encode it.
192
encoded = b"mandos" + binascii.hexlify(password)
193
if len(encoded) > 2048:
194
# GnuPG can't handle long passwords, so encode differently
195
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
196
.replace(b"\n", b"\\n")
197
.replace(b"\0", b"\\x00"))
198
return encoded
199
200
def encrypt(self, data, password):
201
passphrase = self.password_encode(password)
202
with tempfile.NamedTemporaryFile(
203
dir=self.tempdir) as passfile:
204
passfile.write(passphrase)
205
passfile.flush()
206
proc = subprocess.Popen(['gpg', '--symmetric',
207
'--passphrase-file',
208
passfile.name]
209
+ self.gnupgargs,
210
stdin = subprocess.PIPE,
211
stdout = subprocess.PIPE,
212
stderr = subprocess.PIPE)
213
ciphertext, err = proc.communicate(input = data)
214
if proc.returncode != 0:
215
raise PGPError(err)
216
return ciphertext
217
218
def decrypt(self, data, password):
219
passphrase = self.password_encode(password)
220
with tempfile.NamedTemporaryFile(
221
dir = self.tempdir) as passfile:
222
passfile.write(passphrase)
223
passfile.flush()
224
proc = subprocess.Popen(['gpg', '--decrypt',
225
'--passphrase-file',
226
passfile.name]
227
+ self.gnupgargs,
228
stdin = subprocess.PIPE,
229
stdout = subprocess.PIPE,
230
stderr = subprocess.PIPE)
231
decrypted_plaintext, err = proc.communicate(input = data)
232
if proc.returncode != 0:
233
raise PGPError(err)
234
return decrypted_plaintext
235
96
236
97
237
class AvahiError(Exception):
98
238
def __init__(self, value, *args, **kwargs):
99
239
self.value = value
100
super(AvahiError, self).__init__(value, *args, **kwargs)
101
def __unicode__(self):
102
return unicode(repr(self.value))
240
return super(AvahiError, self).__init__(value, *args,
241
**kwargs)
242
103
243
104
244
class AvahiServiceError(AvahiError):
105
245
pass
106
246
247
107
248
class AvahiGroupError(AvahiError):
108
249
pass
109
250
114
255
Attributes:
115
256
interface: integer; avahi.IF_UNSPEC or an interface index.
116
257
Used to optionally bind to the specified interface.
117
name: string; Example: u'Mandos'
118
type: string; Example: u'_mandos._tcp'.
119
See <http://www.dns-sd.org/ServiceTypes.html>
258
name: string; Example: 'Mandos'
259
type: string; Example: '_mandos._tcp'.
260
See <https://www.iana.org/assignments/service-names-port-numbers>
120
261
port: integer; what port to announce
121
262
TXT: list of strings; TXT record for the service
122
263
domain: string; Domain to publish on, default to .local if empty.
128
269
server: D-Bus Server
129
270
bus: dbus.SystemBus()
130
271
"""
131
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
132
servicetype = None, port = None, TXT = None,
133
domain = u"", host = u"", max_renames = 32768,
134
protocol = avahi.PROTO_UNSPEC, bus = None):
272
273
def __init__(self,
274
interface = avahi.IF_UNSPEC,
275
name = None,
276
servicetype = None,
277
port = None,
278
TXT = None,
279
domain = "",
280
host = "",
281
max_renames = 32768,
282
protocol = avahi.PROTO_UNSPEC,
283
bus = None):
135
284
self.interface = interface
136
285
self.name = name
137
286
self.type = servicetype
145
294
self.group = None # our entry group
146
295
self.server = None
147
296
self.bus = bus
148
def rename(self):
297
self.entry_group_state_changed_match = None
298
299
def rename(self, remove=True):
149
300
"""Derived from the Avahi example code"""
150
301
if self.rename_count >= self.max_renames:
151
logger.critical(u"No suitable Zeroconf service name found"
152
u" after %i retries, exiting.",
302
logger.critical("No suitable Zeroconf service name found"
303
" after %i retries, exiting.",
153
304
self.rename_count)
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))
162
self.remove()
163
self.add()
305
raise AvahiServiceError("Too many renames")
306
self.name = str(
307
self.server.GetAlternativeServiceName(self.name))
164
308
self.rename_count += 1
309
logger.info("Changing Zeroconf service name to %r ...",
310
self.name)
311
if remove:
312
self.remove()
313
try:
314
self.add()
315
except dbus.exceptions.DBusException as error:
316
if (error.get_dbus_name()
317
== "org.freedesktop.Avahi.CollisionError"):
318
logger.info("Local Zeroconf service name collision.")
319
return self.rename(remove=False)
320
else:
321
logger.critical("D-Bus Exception", exc_info=error)
322
self.cleanup()
323
os._exit(1)
324
165
325
def remove(self):
166
326
"""Derived from the Avahi example code"""
327
if self.entry_group_state_changed_match is not None:
328
self.entry_group_state_changed_match.remove()
329
self.entry_group_state_changed_match = None
167
330
if self.group is not None:
168
331
self.group.Reset()
332
169
333
def add(self):
170
334
"""Derived from the Avahi example code"""
335
self.remove()
171
336
if self.group is None:
172
337
self.group = dbus.Interface(
173
338
self.bus.get_object(avahi.DBUS_NAME,
174
339
self.server.EntryGroupNew()),
175
340
avahi.DBUS_INTERFACE_ENTRY_GROUP)
176
self.group.connect_to_signal('StateChanged',
177
self.entry_group_state_changed)
178
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
341
self.entry_group_state_changed_match = (
342
self.group.connect_to_signal(
343
'StateChanged', self.entry_group_state_changed))
344
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
179
345
self.name, self.type)
180
346
self.group.AddService(
181
347
self.interface,
186
352
dbus.UInt16(self.port),
187
353
avahi.string_array_to_txt_array(self.TXT))
188
354
self.group.Commit()
355
189
356
def entry_group_state_changed(self, state, error):
190
357
"""Derived from the Avahi example code"""
191
logger.debug(u"Avahi state change: %i", state)
358
logger.debug("Avahi entry group state change: %i", state)
192
359
193
360
if state == avahi.ENTRY_GROUP_ESTABLISHED:
194
logger.debug(u"Zeroconf service established.")
361
logger.debug("Zeroconf service established.")
195
362
elif state == avahi.ENTRY_GROUP_COLLISION:
196
logger.warning(u"Zeroconf service name collision.")
363
logger.info("Zeroconf service name collision.")
197
364
self.rename()
198
365
elif state == avahi.ENTRY_GROUP_FAILURE:
199
logger.critical(u"Avahi: Error in group state changed %s",
200
unicode(error))
201
raise AvahiGroupError(u"State changed: %s"
202
% unicode(error))
366
logger.critical("Avahi: Error in group state changed %s",
367
str(error))
368
raise AvahiGroupError("State changed: {!s}".format(error))
369
203
370
def cleanup(self):
204
371
"""Derived from the Avahi example code"""
205
372
if self.group is not None:
206
self.group.Free()
373
try:
374
self.group.Free()
375
except (dbus.exceptions.UnknownMethodException,
376
dbus.exceptions.DBusException):
377
pass
207
378
self.group = None
208
def server_state_changed(self, state):
379
self.remove()
380
381
def server_state_changed(self, state, error=None):
209
382
"""Derived from the Avahi example code"""
210
if state == avahi.SERVER_COLLISION:
211
logger.error(u"Zeroconf server name collision")
212
self.remove()
383
logger.debug("Avahi server state change: %i", state)
384
bad_states = {
385
avahi.SERVER_INVALID: "Zeroconf server invalid",
386
avahi.SERVER_REGISTERING: None,
387
avahi.SERVER_COLLISION: "Zeroconf server name collision",
388
avahi.SERVER_FAILURE: "Zeroconf server failure",
389
}
390
if state in bad_states:
391
if bad_states[state] is not None:
392
if error is None:
393
logger.error(bad_states[state])
394
else:
395
logger.error(bad_states[state] + ": %r", error)
396
self.cleanup()
213
397
elif state == avahi.SERVER_RUNNING:
214
self.add()
398
try:
399
self.add()
400
except dbus.exceptions.DBusException as error:
401
if (error.get_dbus_name()
402
== "org.freedesktop.Avahi.CollisionError"):
403
logger.info("Local Zeroconf service name"
404
" collision.")
405
return self.rename(remove=False)
406
else:
407
logger.critical("D-Bus Exception", exc_info=error)
408
self.cleanup()
409
os._exit(1)
410
else:
411
if error is None:
412
logger.debug("Unknown state: %r", state)
413
else:
414
logger.debug("Unknown state: %r: %r", state, error)
415
215
416
def activate(self):
216
417
"""Derived from the Avahi example code"""
217
418
if self.server is None:
218
419
self.server = dbus.Interface(
219
420
self.bus.get_object(avahi.DBUS_NAME,
220
avahi.DBUS_PATH_SERVER),
421
avahi.DBUS_PATH_SERVER,
422
follow_name_owner_changes=True),
221
423
avahi.DBUS_INTERFACE_SERVER)
222
self.server.connect_to_signal(u"StateChanged",
223
self.server_state_changed)
424
self.server.connect_to_signal("StateChanged",
425
self.server_state_changed)
224
426
self.server_state_changed(self.server.GetState())
225
427
226
428
429
class AvahiServiceToSyslog(AvahiService):
430
def rename(self, *args, **kwargs):
431
"""Add the new name to the syslog messages"""
432
ret = AvahiService.rename(self, *args, **kwargs)
433
syslogger.setFormatter(logging.Formatter(
434
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
435
.format(self.name)))
436
return ret
437
438
def call_pipe(connection, # : multiprocessing.Connection
439
func, *args, **kwargs):
440
"""This function is meant to be called by multiprocessing.Process
441
442
This function runs func(*args, **kwargs), and writes the resulting
443
return value on the provided multiprocessing.Connection.
444
"""
445
connection.send(func(*args, **kwargs))
446
connection.close()
447
227
448
class Client(object):
228
449
"""A representation of a client host served by this server.
229
450
230
451
Attributes:
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)
452
approved: bool(); 'None' if not yet approved/disapproved
453
approval_delay: datetime.timedelta(); Time to wait for approval
454
approval_duration: datetime.timedelta(); Duration of one approval
245
455
checker: subprocess.Popen(); a running checker process used
246
456
to see if the client lives.
247
457
'None' if no process is running.
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
458
checker_callback_tag: a gobject event source tag, or None
459
checker_command: string; External command which is run to check
460
if client lives. %() expansions are done at
253
461
runtime with vars(self) as dict, so that for
254
462
instance %(name)s can be used in the command.
463
checker_initiator_tag: a gobject event source tag, or None
464
created: datetime.datetime(); (UTC) object creation
465
client_structure: Object describing what attributes a client has
466
and is used for storing the client at exit
255
467
current_checker_command: string; current running checker_command
468
disable_initiator_tag: a gobject event source tag, or None
469
enabled: bool()
470
fingerprint: string (40 or 32 hexadecimal digits); used to
471
uniquely identify the client
472
host: string; available for use by the checker command
473
interval: datetime.timedelta(); How often to start a new checker
474
last_approval_request: datetime.datetime(); (UTC) or None
475
last_checked_ok: datetime.datetime(); (UTC) or None
476
last_checker_status: integer between 0 and 255 reflecting exit
477
status of last checker. -1 reflects crashed
478
checker, -2 means no checker completed yet.
479
last_checker_signal: The signal which killed the last checker, if
480
last_checker_status is -1
481
last_enabled: datetime.datetime(); (UTC) or None
482
name: string; from the config file, used in log messages and
483
D-Bus identifiers
484
secret: bytestring; sent verbatim (over TLS) to client
485
timeout: datetime.timedelta(); How long from last_checked_ok
486
until this client is disabled
487
extended_timeout: extra long timeout when secret has been sent
488
runtime_expansions: Allowed attributes for runtime expansion.
489
expires: datetime.datetime(); time (UTC) when a client will be
490
disabled, or None
491
server_settings: The server_settings dict from main()
256
492
"""
257
493
494
runtime_expansions = ("approval_delay", "approval_duration",
495
"created", "enabled", "expires",
496
"fingerprint", "host", "interval",
497
"last_approval_request", "last_checked_ok",
498
"last_enabled", "name", "timeout")
499
client_defaults = {
500
"timeout": "PT5M",
501
"extended_timeout": "PT15M",
502
"interval": "PT2M",
503
"checker": "fping -q -- %%(host)s",
504
"host": "",
505
"approval_delay": "PT0S",
506
"approval_duration": "PT1S",
507
"approved_by_default": "True",
508
"enabled": "True",
509
}
510
258
511
@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))
264
265
def timeout_milliseconds(self):
266
"Return the 'timeout' attribute in milliseconds"
267
return self._datetime_to_milliseconds(self.timeout)
268
269
def interval_milliseconds(self):
270
"Return the 'interval' attribute in milliseconds"
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."""
512
def config_parser(config):
513
"""Construct a new dict of client settings of this form:
514
{ client_name: {setting_name: value, ...}, ...}
515
with exceptions for any special settings as defined above.
516
NOTE: Must be a pure function. Must return the same result
517
value given the same arguments.
518
"""
519
settings = {}
520
for client_name in config.sections():
521
section = dict(config.items(client_name))
522
client = settings[client_name] = {}
523
524
client["host"] = section["host"]
525
# Reformat values from string types to Python types
526
client["approved_by_default"] = config.getboolean(
527
client_name, "approved_by_default")
528
client["enabled"] = config.getboolean(client_name,
529
"enabled")
530
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the
533
# fingerprint() function
534
client["fingerprint"] = (section["fingerprint"].upper()
535
.replace(" ", ""))
536
if "secret" in section:
537
client["secret"] = section["secret"].decode("base64")
538
elif "secfile" in section:
539
with open(os.path.expanduser(os.path.expandvars
540
(section["secfile"])),
541
"rb") as secfile:
542
client["secret"] = secfile.read()
543
else:
544
raise TypeError("No secret or secfile for section {}"
545
.format(section))
546
client["timeout"] = string_to_delta(section["timeout"])
547
client["extended_timeout"] = string_to_delta(
548
section["extended_timeout"])
549
client["interval"] = string_to_delta(section["interval"])
550
client["approval_delay"] = string_to_delta(
551
section["approval_delay"])
552
client["approval_duration"] = string_to_delta(
553
section["approval_duration"])
554
client["checker_command"] = section["checker"]
555
client["last_approval_request"] = None
556
client["last_checked_ok"] = None
557
client["last_checker_status"] = -2
558
559
return settings
560
561
def __init__(self, settings, name = None, server_settings=None):
277
562
self.name = name
278
if config is None:
279
config = {}
280
logger.debug(u"Creating client %r", self.name)
281
# Uppercase and remove spaces from fingerprint for later
282
# comparison purposes with return value from the fingerprint()
283
# function
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()
563
if server_settings is None:
564
server_settings = {}
565
self.server_settings = server_settings
566
# adding all client settings
567
for setting, value in settings.items():
568
setattr(self, setting, value)
569
570
if self.enabled:
571
if not hasattr(self, "last_enabled"):
572
self.last_enabled = datetime.datetime.utcnow()
573
if not hasattr(self, "expires"):
574
self.expires = (datetime.datetime.utcnow()
575
+ self.timeout)
294
576
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
577
self.last_enabled = None
578
self.expires = None
579
580
logger.debug("Creating client %r", self.name)
581
logger.debug(" Fingerprint: %s", self.fingerprint)
582
self.created = settings.get("created",
583
datetime.datetime.utcnow())
584
585
# attributes specific for this server instance
305
586
self.checker = None
306
587
self.checker_initiator_tag = None
307
588
self.disable_initiator_tag = None
308
589
self.checker_callback_tag = None
309
self.checker_command = config[u"checker"]
310
590
self.current_checker_command = None
311
self.last_connect = None
591
self.approved = None
592
self.approvals_pending = 0
593
self.changedstate = multiprocessing_manager.Condition(
594
multiprocessing_manager.Lock())
595
self.client_structure = [attr
596
for attr in self.__dict__.iterkeys()
597
if not attr.startswith("_")]
598
self.client_structure.append("client_structure")
599
600
for name, t in inspect.getmembers(
601
type(self), lambda obj: isinstance(obj, property)):
602
if not name.startswith("_"):
603
self.client_structure.append(name)
604
605
# Send notice to process children that client state has changed
606
def send_changedstate(self):
607
with self.changedstate:
608
self.changedstate.notify_all()
312
609
313
610
def enable(self):
314
611
"""Start this client's checker and timeout hooks"""
315
if getattr(self, u"enabled", False):
612
if getattr(self, "enabled", False):
316
613
# Already enabled
317
614
return
615
self.expires = datetime.datetime.utcnow() + self.timeout
616
self.enabled = True
318
617
self.last_enabled = datetime.datetime.utcnow()
319
# Schedule a new checker to be started an 'interval' from now,
320
# and every interval from then on.
321
self.checker_initiator_tag = (gobject.timeout_add
322
(self.interval_milliseconds(),
323
self.start_checker))
324
# Also start a new checker *right now*.
325
self.start_checker()
326
# Schedule a disable() when 'timeout' has passed
327
self.disable_initiator_tag = (gobject.timeout_add
328
(self.timeout_milliseconds(),
329
self.disable))
330
self.enabled = True
618
self.init_checker()
619
self.send_changedstate()
331
620
332
def disable(self):
621
def disable(self, quiet=True):
333
622
"""Disable this client."""
334
623
if not getattr(self, "enabled", False):
335
624
return False
336
logger.info(u"Disabling client %s", self.name)
337
if getattr(self, u"disable_initiator_tag", False):
625
if not quiet:
626
logger.info("Disabling client %s", self.name)
627
if getattr(self, "disable_initiator_tag", None) is not None:
338
628
gobject.source_remove(self.disable_initiator_tag)
339
629
self.disable_initiator_tag = None
340
if getattr(self, u"checker_initiator_tag", False):
630
self.expires = None
631
if getattr(self, "checker_initiator_tag", None) is not None:
341
632
gobject.source_remove(self.checker_initiator_tag)
342
633
self.checker_initiator_tag = None
343
634
self.stop_checker()
344
if self.disable_hook:
345
self.disable_hook(self)
346
635
self.enabled = False
636
if not quiet:
637
self.send_changedstate()
347
638
# Do not run this again if called by a gobject.timeout_add
348
639
return False
349
640
350
641
def __del__(self):
351
self.disable_hook = None
352
642
self.disable()
353
643
354
def checker_callback(self, pid, condition, command):
644
def init_checker(self):
645
# Schedule a new checker to be started an 'interval' from now,
646
# and every interval from then on.
647
if self.checker_initiator_tag is not None:
648
gobject.source_remove(self.checker_initiator_tag)
649
self.checker_initiator_tag = gobject.timeout_add(
650
int(self.interval.total_seconds() * 1000),
651
self.start_checker)
652
# Schedule a disable() when 'timeout' has passed
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = gobject.timeout_add(
656
int(self.timeout.total_seconds() * 1000), self.disable)
657
# Also start a new checker *right now*.
658
self.start_checker()
659
660
def checker_callback(self, source, condition, connection,
661
command):
355
662
"""The checker has completed, so take appropriate actions."""
356
663
self.checker_callback_tag = None
357
664
self.checker = None
358
if os.WIFEXITED(condition):
359
exitstatus = os.WEXITSTATUS(condition)
360
if exitstatus == 0:
361
logger.info(u"Checker for %(name)s succeeded",
665
# Read return code from connection (see call_pipe)
666
returncode = connection.recv()
667
connection.close()
668
669
if returncode >= 0:
670
self.last_checker_status = returncode
671
self.last_checker_signal = None
672
if self.last_checker_status == 0:
673
logger.info("Checker for %(name)s succeeded",
362
674
vars(self))
363
675
self.checked_ok()
364
676
else:
365
logger.info(u"Checker for %(name)s failed",
366
vars(self))
677
logger.info("Checker for %(name)s failed", vars(self))
367
678
else:
368
logger.warning(u"Checker for %(name)s crashed?",
679
self.last_checker_status = -1
680
self.last_checker_signal = -returncode
681
logger.warning("Checker for %(name)s crashed?",
369
682
vars(self))
683
return False
370
684
371
685
def checked_ok(self):
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
"""
686
"""Assert that the client has been seen, alive and well."""
377
687
self.last_checked_ok = 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))
688
self.last_checker_status = 0
689
self.last_checker_signal = None
690
self.bump_timeout()
691
692
def bump_timeout(self, timeout=None):
693
"""Bump up the timeout for this client."""
694
if timeout is None:
695
timeout = self.timeout
696
if self.disable_initiator_tag is not None:
697
gobject.source_remove(self.disable_initiator_tag)
698
self.disable_initiator_tag = None
699
if getattr(self, "enabled", False):
700
self.disable_initiator_tag = gobject.timeout_add(
701
int(timeout.total_seconds() * 1000), self.disable)
702
self.expires = datetime.datetime.utcnow() + timeout
703
704
def need_approval(self):
705
self.last_approval_request = datetime.datetime.utcnow()
382
706
383
707
def start_checker(self):
384
708
"""Start a new checker subprocess if one is not running.
386
710
If a checker already exists, leave it running and do
387
711
nothing."""
388
712
# The reason for not killing a running checker is that if we
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
713
# did that, and if a checker (for some reason) started running
714
# slowly and taking more than 'interval' time, then the client
715
# would inevitably timeout, since no checker would get a
716
# chance to run to completion. If we instead leave running
393
717
# checkers alone, the checker would have to take more time
394
# than 'timeout' for the client to be declared invalid, which
395
# is as it should be.
718
# than 'timeout' for the client to be disabled, which is as it
719
# should be.
396
720
397
# If a checker exists, make sure it is not a zombie
398
if self.checker is not None:
399
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
400
if pid:
401
logger.warning(u"Checker was a zombie")
402
gobject.source_remove(self.checker_callback_tag)
403
self.checker_callback(pid, status,
404
self.current_checker_command)
721
if self.checker is not None and not self.checker.is_alive():
722
logger.warning("Checker was not alive; joining")
723
self.checker.join()
724
self.checker = None
405
725
# Start a new checker if needed
406
726
if self.checker is None:
727
# Escape attributes for the shell
728
escaped_attrs = {
729
attr: re.escape(str(getattr(self, attr)))
730
for attr in self.runtime_expansions }
407
731
try:
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
732
command = self.checker_command % escaped_attrs
733
except TypeError as error:
734
logger.error('Could not format string "%s"',
735
self.checker_command,
736
exc_info=error)
737
return True # Try again later
424
738
self.current_checker_command = command
425
try:
426
logger.info(u"Starting checker %r for %s",
427
command, self.name)
428
# We don't need to redirect stdout and stderr, since
429
# in normal mode, that is already done by daemon(),
430
# and in debug mode we don't want to. (Stdin is
431
# always replaced by /dev/null.)
432
self.checker = subprocess.Popen(command,
433
close_fds=True,
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.
441
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
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)
739
logger.info("Starting checker %r for %s", command,
740
self.name)
741
# We don't need to redirect stdout and stderr, since
742
# in normal mode, that is already done by daemon(),
743
# and in debug mode we don't want to. (Stdin is
744
# always replaced by /dev/null.)
745
# The exception is when not debugging but nevertheless
746
# running in the foreground; use the previously
747
# created wnull.
748
popen_args = { "close_fds": True,
749
"shell": True,
750
"cwd": "/" }
751
if (not self.server_settings["debug"]
752
and self.server_settings["foreground"]):
753
popen_args.update({"stdout": wnull,
754
"stderr": wnull })
755
pipe = multiprocessing.Pipe(duplex = False)
756
self.checker = multiprocessing.Process(
757
target = call_pipe,
758
args = (pipe[1], subprocess.call, command),
759
kwargs = popen_args)
760
self.checker.start()
761
self.checker_callback_tag = gobject.io_add_watch(
762
pipe[0].fileno(), gobject.IO_IN,
763
self.checker_callback, pipe[0], command)
448
764
# Re-run this periodically if run by gobject.timeout_add
449
765
return True
450
766
453
769
if self.checker_callback_tag:
454
770
gobject.source_remove(self.checker_callback_tag)
455
771
self.checker_callback_tag = None
456
if getattr(self, u"checker", None) is None:
772
if getattr(self, "checker", None) is None:
457
773
return
458
logger.debug(u"Stopping checker for %(name)s", vars(self))
459
try:
460
os.kill(self.checker.pid, signal.SIGTERM)
461
#os.sleep(0.5)
462
#if self.checker.poll() is None:
463
# os.kill(self.checker.pid, signal.SIGKILL)
464
except OSError, error:
465
if error.errno != errno.ESRCH: # No such process
466
raise
774
logger.debug("Stopping checker for %(name)s", vars(self))
775
self.checker.terminate()
467
776
self.checker = None
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):
777
778
779
def dbus_service_property(dbus_interface,
780
signature="v",
781
access="readwrite",
782
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 {!r}".format(signature))
798
799
def decorator(func):
800
func._dbus_is_property = True
801
func._dbus_interface = dbus_interface
802
func._dbus_signature = signature
803
func._dbus_access = access
804
func._dbus_name = func.__name__
805
if func._dbus_name.endswith("_dbus_property"):
806
func._dbus_name = func._dbus_name[:-14]
807
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
808
return func
809
810
return decorator
811
812
813
def dbus_interface_annotations(dbus_interface):
814
"""Decorator for marking functions returning interface annotations
815
816
Usage:
817
818
@dbus_interface_annotations("org.example.Interface")
819
def _foo(self): # Function name does not matter
820
return {"org.freedesktop.DBus.Deprecated": "true",
821
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
"false"}
823
"""
824
825
def decorator(func):
826
func._dbus_is_interface = True
827
func._dbus_interface = dbus_interface
828
func._dbus_name = dbus_interface
829
return func
830
831
return decorator
832
833
834
def dbus_annotations(annotations):
835
"""Decorator to annotate D-Bus methods, signals or properties
836
Usage:
837
838
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
839
"org.freedesktop.DBus.Property."
840
"EmitsChangedSignal": "false"})
841
@dbus_service_property("org.example.Interface", signature="b",
842
access="r")
843
def Property_dbus_property(self):
844
return dbus.Boolean(False)
845
846
See also the DBusObjectWithAnnotations class.
847
"""
848
849
def decorator(func):
850
func._dbus_annotations = annotations
851
return func
852
853
return decorator
854
855
856
class DBusPropertyException(dbus.exceptions.DBusException):
857
"""A base class for D-Bus property-related exceptions
858
"""
859
pass
860
861
862
class DBusPropertyAccessException(DBusPropertyException):
863
"""A property's access permissions disallows an operation.
864
"""
865
pass
866
867
868
class DBusPropertyNotFound(DBusPropertyException):
869
"""An attempt was made to access a non-existing property.
870
"""
871
pass
872
873
874
class DBusObjectWithAnnotations(dbus.service.Object):
875
"""A D-Bus object with annotations.
876
877
Classes inheriting from this can use the dbus_annotations
878
decorator to add annotations to methods or signals.
879
"""
880
881
@staticmethod
882
def _is_dbus_thing(thing):
883
"""Returns a function testing if an attribute is a D-Bus thing
884
885
If called like _is_dbus_thing("method") it returns a function
886
suitable for use as predicate to inspect.getmembers().
887
"""
888
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
889
False)
890
891
def _get_all_dbus_things(self, thing):
892
"""Returns a generator of (name, attribute) pairs
893
"""
894
return ((getattr(athing.__get__(self), "_dbus_name", name),
895
athing.__get__(self))
896
for cls in self.__class__.__mro__
897
for name, athing in
898
inspect.getmembers(cls, self._is_dbus_thing(thing)))
899
900
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
901
out_signature = "s",
902
path_keyword = 'object_path',
903
connection_keyword = 'connection')
904
def Introspect(self, object_path, connection):
905
"""Overloading of standard D-Bus method.
906
907
Inserts annotation tags on methods and signals.
908
"""
909
xmlstring = dbus.service.Object.Introspect(self, object_path,
910
connection)
911
try:
912
document = xml.dom.minidom.parseString(xmlstring)
913
914
for if_tag in document.getElementsByTagName("interface"):
915
# Add annotation tags
916
for typ in ("method", "signal"):
917
for tag in if_tag.getElementsByTagName(typ):
918
annots = dict()
919
for name, prop in (self.
920
_get_all_dbus_things(typ)):
921
if (name == tag.getAttribute("name")
922
and prop._dbus_interface
923
== if_tag.getAttribute("name")):
924
annots.update(getattr(
925
prop, "_dbus_annotations", {}))
926
for name, value in annots.items():
927
ann_tag = document.createElement(
928
"annotation")
929
ann_tag.setAttribute("name", name)
930
ann_tag.setAttribute("value", value)
931
tag.appendChild(ann_tag)
932
# Add interface annotation tags
933
for annotation, value in dict(
934
itertools.chain.from_iterable(
935
annotations().items()
936
for name, annotations
937
in self._get_all_dbus_things("interface")
938
if name == if_tag.getAttribute("name")
939
)).items():
940
ann_tag = document.createElement("annotation")
941
ann_tag.setAttribute("name", annotation)
942
ann_tag.setAttribute("value", value)
943
if_tag.appendChild(ann_tag)
944
# Fix argument name for the Introspect method itself
945
if (if_tag.getAttribute("name")
946
== dbus.INTROSPECTABLE_IFACE):
947
for cn in if_tag.getElementsByTagName("method"):
948
if cn.getAttribute("name") == "Introspect":
949
for arg in cn.getElementsByTagName("arg"):
950
if (arg.getAttribute("direction")
951
== "out"):
952
arg.setAttribute("name",
953
"xml_data")
954
xmlstring = document.toxml("utf-8")
955
document.unlink()
956
except (AttributeError, xml.dom.DOMException,
957
xml.parsers.expat.ExpatError) as error:
958
logger.error("Failed to override Introspection method",
959
exc_info=error)
960
return xmlstring
961
962
963
class DBusObjectWithProperties(DBusObjectWithAnnotations):
964
"""A D-Bus object with properties.
965
966
Classes inheriting from this can use the dbus_service_property
967
decorator to expose methods as D-Bus properties. It exposes the
968
standard Get(), Set(), and GetAll() methods on the D-Bus.
969
"""
970
971
def _get_dbus_property(self, interface_name, property_name):
972
"""Returns a bound method if one exists which is a D-Bus
973
property with the specified name and interface.
974
"""
975
for cls in self.__class__.__mro__:
976
for name, value in inspect.getmembers(
977
cls, self._is_dbus_thing("property")):
978
if (value._dbus_name == property_name
979
and value._dbus_interface == interface_name):
980
return value.__get__(self)
981
982
# No such property
983
raise DBusPropertyNotFound("{}:{}.{}".format(
984
self.dbus_object_path, interface_name, property_name))
985
986
@classmethod
987
def _get_all_interface_names(cls):
988
"""Get a sequence of all interfaces supported by an object"""
989
return (name for name in set(getattr(getattr(x, attr),
990
"_dbus_interface", None)
991
for x in (inspect.getmro(cls))
992
for attr in dir(x))
993
if name is not None)
994
995
@dbus.service.method(dbus.PROPERTIES_IFACE,
996
in_signature="ss",
997
out_signature="v")
998
def Get(self, interface_name, property_name):
999
"""Standard D-Bus property Get() method, see D-Bus standard.
1000
"""
1001
prop = self._get_dbus_property(interface_name, property_name)
1002
if prop._dbus_access == "write":
1003
raise DBusPropertyAccessException(property_name)
1004
value = prop()
1005
if not hasattr(value, "variant_level"):
1006
return value
1007
return type(value)(value, variant_level=value.variant_level+1)
1008
1009
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1010
def Set(self, interface_name, property_name, value):
1011
"""Standard D-Bus property Set() method, see D-Bus standard.
1012
"""
1013
prop = self._get_dbus_property(interface_name, property_name)
1014
if prop._dbus_access == "read":
1015
raise DBusPropertyAccessException(property_name)
1016
if prop._dbus_get_args_options["byte_arrays"]:
1017
# The byte_arrays option is not supported yet on
1018
# signatures other than "ay".
1019
if prop._dbus_signature != "ay":
1020
raise ValueError("Byte arrays not supported for non-"
1021
"'ay' signature {!r}"
1022
.format(prop._dbus_signature))
1023
value = dbus.ByteArray(b''.join(chr(byte)
1024
for byte in value))
1025
prop(value)
1026
1027
@dbus.service.method(dbus.PROPERTIES_IFACE,
1028
in_signature="s",
1029
out_signature="a{sv}")
1030
def GetAll(self, interface_name):
1031
"""Standard D-Bus property GetAll() method, see D-Bus
1032
standard.
1033
1034
Note: Will not include properties with access="write".
1035
"""
1036
properties = {}
1037
for name, prop in self._get_all_dbus_things("property"):
1038
if (interface_name
1039
and interface_name != prop._dbus_interface):
1040
# Interface non-empty but did not match
1041
continue
1042
# Ignore write-only properties
1043
if prop._dbus_access == "write":
1044
continue
1045
value = prop()
1046
if not hasattr(value, "variant_level"):
1047
properties[name] = value
1048
continue
1049
properties[name] = type(value)(
1050
value, variant_level = value.variant_level + 1)
1051
return dbus.Dictionary(properties, signature="sv")
1052
1053
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1054
def PropertiesChanged(self, interface_name, changed_properties,
1055
invalidated_properties):
1056
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1057
standard.
1058
"""
1059
pass
1060
1061
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1062
out_signature="s",
1063
path_keyword='object_path',
1064
connection_keyword='connection')
1065
def Introspect(self, object_path, connection):
1066
"""Overloading of standard D-Bus method.
1067
1068
Inserts property tags and interface annotation tags.
1069
"""
1070
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1071
object_path,
1072
connection)
1073
try:
1074
document = xml.dom.minidom.parseString(xmlstring)
1075
1076
def make_tag(document, name, prop):
1077
e = document.createElement("property")
1078
e.setAttribute("name", name)
1079
e.setAttribute("type", prop._dbus_signature)
1080
e.setAttribute("access", prop._dbus_access)
1081
return e
1082
1083
for if_tag in document.getElementsByTagName("interface"):
1084
# Add property tags
1085
for tag in (make_tag(document, name, prop)
1086
for name, prop
1087
in self._get_all_dbus_things("property")
1088
if prop._dbus_interface
1089
== if_tag.getAttribute("name")):
1090
if_tag.appendChild(tag)
1091
# Add annotation tags for properties
1092
for tag in if_tag.getElementsByTagName("property"):
1093
annots = dict()
1094
for name, prop in self._get_all_dbus_things(
1095
"property"):
1096
if (name == tag.getAttribute("name")
1097
and prop._dbus_interface
1098
== if_tag.getAttribute("name")):
1099
annots.update(getattr(
1100
prop, "_dbus_annotations", {}))
1101
for name, value in annots.items():
1102
ann_tag = document.createElement(
1103
"annotation")
1104
ann_tag.setAttribute("name", name)
1105
ann_tag.setAttribute("value", value)
1106
tag.appendChild(ann_tag)
1107
# Add the names to the return values for the
1108
# "org.freedesktop.DBus.Properties" methods
1109
if (if_tag.getAttribute("name")
1110
== "org.freedesktop.DBus.Properties"):
1111
for cn in if_tag.getElementsByTagName("method"):
1112
if cn.getAttribute("name") == "Get":
1113
for arg in cn.getElementsByTagName("arg"):
1114
if (arg.getAttribute("direction")
1115
== "out"):
1116
arg.setAttribute("name", "value")
1117
elif cn.getAttribute("name") == "GetAll":
1118
for arg in cn.getElementsByTagName("arg"):
1119
if (arg.getAttribute("direction")
1120
== "out"):
1121
arg.setAttribute("name", "props")
1122
xmlstring = document.toxml("utf-8")
1123
document.unlink()
1124
except (AttributeError, xml.dom.DOMException,
1125
xml.parsers.expat.ExpatError) as error:
1126
logger.error("Failed to override Introspection method",
1127
exc_info=error)
1128
return xmlstring
1129
1130
try:
1131
dbus.OBJECT_MANAGER_IFACE
1132
except AttributeError:
1133
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1134
1135
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1136
"""A D-Bus object with an ObjectManager.
1137
1138
Classes inheriting from this exposes the standard
1139
GetManagedObjects call and the InterfacesAdded and
1140
InterfacesRemoved signals on the standard
1141
"org.freedesktop.DBus.ObjectManager" interface.
1142
1143
Note: No signals are sent automatically; they must be sent
1144
manually.
1145
"""
1146
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1147
out_signature = "a{oa{sa{sv}}}")
1148
def GetManagedObjects(self):
1149
"""This function must be overridden"""
1150
raise NotImplementedError()
1151
1152
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1153
signature = "oa{sa{sv}}")
1154
def InterfacesAdded(self, object_path, interfaces_and_properties):
1155
pass
1156
1157
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1158
def InterfacesRemoved(self, object_path, interfaces):
1159
pass
1160
1161
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1162
out_signature = "s",
1163
path_keyword = 'object_path',
1164
connection_keyword = 'connection')
1165
def Introspect(self, object_path, connection):
1166
"""Overloading of standard D-Bus method.
1167
1168
Override return argument name of GetManagedObjects to be
1169
"objpath_interfaces_and_properties"
1170
"""
1171
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1172
object_path,
1173
connection)
1174
try:
1175
document = xml.dom.minidom.parseString(xmlstring)
1176
1177
for if_tag in document.getElementsByTagName("interface"):
1178
# Fix argument name for the GetManagedObjects method
1179
if (if_tag.getAttribute("name")
1180
== dbus.OBJECT_MANAGER_IFACE):
1181
for cn in if_tag.getElementsByTagName("method"):
1182
if (cn.getAttribute("name")
1183
== "GetManagedObjects"):
1184
for arg in cn.getElementsByTagName("arg"):
1185
if (arg.getAttribute("direction")
1186
== "out"):
1187
arg.setAttribute(
1188
"name",
1189
"objpath_interfaces"
1190
"_and_properties")
1191
xmlstring = document.toxml("utf-8")
1192
document.unlink()
1193
except (AttributeError, xml.dom.DOMException,
1194
xml.parsers.expat.ExpatError) as error:
1195
logger.error("Failed to override Introspection method",
1196
exc_info = error)
1197
return xmlstring
1198
1199
def datetime_to_dbus(dt, variant_level=0):
1200
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1201
if dt is None:
1202
return dbus.String("", variant_level = variant_level)
1203
return dbus.String(dt.isoformat(), variant_level=variant_level)
1204
1205
1206
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1207
"""A class decorator; applied to a subclass of
1208
dbus.service.Object, it will add alternate D-Bus attributes with
1209
interface names according to the "alt_interface_names" mapping.
1210
Usage:
1211
1212
@alternate_dbus_interfaces({"org.example.Interface":
1213
"net.example.AlternateInterface"})
1214
class SampleDBusObject(dbus.service.Object):
1215
@dbus.service.method("org.example.Interface")
1216
def SampleDBusMethod():
1217
pass
1218
1219
The above "SampleDBusMethod" on "SampleDBusObject" will be
1220
reachable via two interfaces: "org.example.Interface" and
1221
"net.example.AlternateInterface", the latter of which will have
1222
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1223
"true", unless "deprecate" is passed with a False value.
1224
1225
This works for methods and signals, and also for D-Bus properties
1226
(from DBusObjectWithProperties) and interfaces (from the
1227
dbus_interface_annotations decorator).
1228
"""
1229
1230
def wrapper(cls):
1231
for orig_interface_name, alt_interface_name in (
1232
alt_interface_names.items()):
1233
attr = {}
1234
interface_names = set()
1235
# Go though all attributes of the class
1236
for attrname, attribute in inspect.getmembers(cls):
1237
# Ignore non-D-Bus attributes, and D-Bus attributes
1238
# with the wrong interface name
1239
if (not hasattr(attribute, "_dbus_interface")
1240
or not attribute._dbus_interface.startswith(
1241
orig_interface_name)):
1242
continue
1243
# Create an alternate D-Bus interface name based on
1244
# the current name
1245
alt_interface = attribute._dbus_interface.replace(
1246
orig_interface_name, alt_interface_name)
1247
interface_names.add(alt_interface)
1248
# Is this a D-Bus signal?
1249
if getattr(attribute, "_dbus_is_signal", False):
1250
if sys.version_info.major == 2:
1251
# Extract the original non-method undecorated
1252
# function by black magic
1253
nonmethod_func = (dict(
1254
zip(attribute.func_code.co_freevars,
1255
attribute.__closure__))
1256
["func"].cell_contents)
1257
else:
1258
nonmethod_func = attribute
1259
# Create a new, but exactly alike, function
1260
# object, and decorate it to be a new D-Bus signal
1261
# with the alternate D-Bus interface name
1262
if sys.version_info.major == 2:
1263
new_function = types.FunctionType(
1264
nonmethod_func.func_code,
1265
nonmethod_func.func_globals,
1266
nonmethod_func.func_name,
1267
nonmethod_func.func_defaults,
1268
nonmethod_func.func_closure)
1269
else:
1270
new_function = types.FunctionType(
1271
nonmethod_func.__code__,
1272
nonmethod_func.__globals__,
1273
nonmethod_func.__name__,
1274
nonmethod_func.__defaults__,
1275
nonmethod_func.__closure__)
1276
new_function = (dbus.service.signal(
1277
alt_interface,
1278
attribute._dbus_signature)(new_function))
1279
# Copy annotations, if any
1280
try:
1281
new_function._dbus_annotations = dict(
1282
attribute._dbus_annotations)
1283
except AttributeError:
1284
pass
1285
# Define a creator of a function to call both the
1286
# original and alternate functions, so both the
1287
# original and alternate signals gets sent when
1288
# the function is called
1289
def fixscope(func1, func2):
1290
"""This function is a scope container to pass
1291
func1 and func2 to the "call_both" function
1292
outside of its arguments"""
1293
1294
@functools.wraps(func2)
1295
def call_both(*args, **kwargs):
1296
"""This function will emit two D-Bus
1297
signals by calling func1 and func2"""
1298
func1(*args, **kwargs)
1299
func2(*args, **kwargs)
1300
# Make wrapper function look like a D-Bus signal
1301
for name, attr in inspect.getmembers(func2):
1302
if name.startswith("_dbus_"):
1303
setattr(call_both, name, attr)
1304
1305
return call_both
1306
# Create the "call_both" function and add it to
1307
# the class
1308
attr[attrname] = fixscope(attribute, new_function)
1309
# Is this a D-Bus method?
1310
elif getattr(attribute, "_dbus_is_method", False):
1311
# Create a new, but exactly alike, function
1312
# object. Decorate it to be a new D-Bus method
1313
# with the alternate D-Bus interface name. Add it
1314
# to the class.
1315
attr[attrname] = (
1316
dbus.service.method(
1317
alt_interface,
1318
attribute._dbus_in_signature,
1319
attribute._dbus_out_signature)
1320
(types.FunctionType(attribute.func_code,
1321
attribute.func_globals,
1322
attribute.func_name,
1323
attribute.func_defaults,
1324
attribute.func_closure)))
1325
# Copy annotations, if any
1326
try:
1327
attr[attrname]._dbus_annotations = dict(
1328
attribute._dbus_annotations)
1329
except AttributeError:
1330
pass
1331
# Is this a D-Bus property?
1332
elif getattr(attribute, "_dbus_is_property", False):
1333
# Create a new, but exactly alike, function
1334
# object, and decorate it to be a new D-Bus
1335
# property with the alternate D-Bus interface
1336
# name. Add it to the class.
1337
attr[attrname] = (dbus_service_property(
1338
alt_interface, attribute._dbus_signature,
1339
attribute._dbus_access,
1340
attribute._dbus_get_args_options
1341
["byte_arrays"])
1342
(types.FunctionType(
1343
attribute.func_code,
1344
attribute.func_globals,
1345
attribute.func_name,
1346
attribute.func_defaults,
1347
attribute.func_closure)))
1348
# Copy annotations, if any
1349
try:
1350
attr[attrname]._dbus_annotations = dict(
1351
attribute._dbus_annotations)
1352
except AttributeError:
1353
pass
1354
# Is this a D-Bus interface?
1355
elif getattr(attribute, "_dbus_is_interface", False):
1356
# Create a new, but exactly alike, function
1357
# object. Decorate it to be a new D-Bus interface
1358
# with the alternate D-Bus interface name. Add it
1359
# to the class.
1360
attr[attrname] = (
1361
dbus_interface_annotations(alt_interface)
1362
(types.FunctionType(attribute.func_code,
1363
attribute.func_globals,
1364
attribute.func_name,
1365
attribute.func_defaults,
1366
attribute.func_closure)))
1367
if deprecate:
1368
# Deprecate all alternate interfaces
1369
iname="_AlternateDBusNames_interface_annotation{}"
1370
for interface_name in interface_names:
1371
1372
@dbus_interface_annotations(interface_name)
1373
def func(self):
1374
return { "org.freedesktop.DBus.Deprecated":
1375
"true" }
1376
# Find an unused name
1377
for aname in (iname.format(i)
1378
for i in itertools.count()):
1379
if aname not in attr:
1380
attr[aname] = func
1381
break
1382
if interface_names:
1383
# Replace the class with a new subclass of it with
1384
# methods, signals, etc. as created above.
1385
cls = type(b"{}Alternate".format(cls.__name__),
1386
(cls, ), attr)
1387
return cls
1388
1389
return wrapper
1390
1391
1392
@alternate_dbus_interfaces({"se.recompile.Mandos":
1393
"se.bsnet.fukt.Mandos"})
1394
class ClientDBus(Client, DBusObjectWithProperties):
481
1395
"""A Client class using D-Bus
482
1396
483
1397
Attributes:
484
1398
dbus_object_path: dbus.ObjectPath
485
1399
bus: dbus.SystemBus()
486
1400
"""
1401
1402
runtime_expansions = (Client.runtime_expansions
1403
+ ("dbus_object_path", ))
1404
1405
_interface = "se.recompile.Mandos.Client"
1406
487
1407
# dbus.service.Object doesn't use super(), so we can't either.
488
1408
489
1409
def __init__(self, bus = None, *args, **kwargs):
491
1411
Client.__init__(self, *args, **kwargs)
492
1412
# Only now, when this client is initialized, can it show up on
493
1413
# the D-Bus
494
self.dbus_object_path = (dbus.ObjectPath
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
1414
client_object_name = str(self.name).translate(
1415
{ord("."): ord("_"),
1416
ord("-"): ord("_")})
1417
self.dbus_object_path = dbus.ObjectPath(
1418
"/clients/" + client_object_name)
1419
DBusObjectWithProperties.__init__(self, self.bus,
1420
self.dbus_object_path)
1421
1422
def notifychangeproperty(transform_func, dbus_name,
1423
type_func=lambda x: x,
1424
variant_level=1,
1425
invalidate_only=False,
1426
_interface=_interface):
1427
""" Modify a variable so that it's a property which announces
1428
its changes to DBus.
1429
1430
transform_fun: Function that takes a value and a variant_level
1431
and transforms it to a D-Bus type.
1432
dbus_name: D-Bus name of the variable
1433
type_func: Function that transform the value before sending it
1434
to the D-Bus. Default: no transform
1435
variant_level: D-Bus variant level. Default: 1
1436
"""
1437
attrname = "_{}".format(dbus_name)
1438
1439
def setter(self, value):
1440
if hasattr(self, "dbus_object_path"):
1441
if (not hasattr(self, attrname) or
1442
type_func(getattr(self, attrname, None))
1443
!= type_func(value)):
1444
if invalidate_only:
1445
self.PropertiesChanged(
1446
_interface, dbus.Dictionary(),
1447
dbus.Array((dbus_name, )))
1448
else:
1449
dbus_value = transform_func(
1450
type_func(value),
1451
variant_level = variant_level)
1452
self.PropertyChanged(dbus.String(dbus_name),
1453
dbus_value)
1454
self.PropertiesChanged(
1455
_interface,
1456
dbus.Dictionary({ dbus.String(dbus_name):
1457
dbus_value }),
1458
dbus.Array())
1459
setattr(self, attrname, value)
1460
1461
return property(lambda self: getattr(self, attrname), setter)
1462
1463
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1464
approvals_pending = notifychangeproperty(dbus.Boolean,
1465
"ApprovalPending",
1466
type_func = bool)
1467
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1468
last_enabled = notifychangeproperty(datetime_to_dbus,
1469
"LastEnabled")
1470
checker = notifychangeproperty(
1471
dbus.Boolean, "CheckerRunning",
1472
type_func = lambda checker: checker is not None)
1473
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1474
"LastCheckedOK")
1475
last_checker_status = notifychangeproperty(dbus.Int16,
1476
"LastCheckerStatus")
1477
last_approval_request = notifychangeproperty(
1478
datetime_to_dbus, "LastApprovalRequest")
1479
approved_by_default = notifychangeproperty(dbus.Boolean,
1480
"ApprovedByDefault")
1481
approval_delay = notifychangeproperty(
1482
dbus.UInt64, "ApprovalDelay",
1483
type_func = lambda td: td.total_seconds() * 1000)
1484
approval_duration = notifychangeproperty(
1485
dbus.UInt64, "ApprovalDuration",
1486
type_func = lambda td: td.total_seconds() * 1000)
1487
host = notifychangeproperty(dbus.String, "Host")
1488
timeout = notifychangeproperty(
1489
dbus.UInt64, "Timeout",
1490
type_func = lambda td: td.total_seconds() * 1000)
1491
extended_timeout = notifychangeproperty(
1492
dbus.UInt64, "ExtendedTimeout",
1493
type_func = lambda td: td.total_seconds() * 1000)
1494
interval = notifychangeproperty(
1495
dbus.UInt64, "Interval",
1496
type_func = lambda td: td.total_seconds() * 1000)
1497
checker_command = notifychangeproperty(dbus.String, "Checker")
1498
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1499
invalidate_only=True)
1500
1501
del notifychangeproperty
527
1502
528
1503
def __del__(self, *args, **kwargs):
529
1504
try:
530
1505
self.remove_from_connection()
531
1506
except LookupError:
532
1507
pass
533
if hasattr(dbus.service.Object, u"__del__"):
534
dbus.service.Object.__del__(self, *args, **kwargs)
1508
if hasattr(DBusObjectWithProperties, "__del__"):
1509
DBusObjectWithProperties.__del__(self, *args, **kwargs)
535
1510
Client.__del__(self, *args, **kwargs)
536
1511
537
def checker_callback(self, pid, condition, command,
538
*args, **kwargs):
539
self.checker_callback_tag = None
540
self.checker = None
541
# Emit D-Bus signal
542
self.PropertyChanged(dbus.String(u"checker_running"),
543
dbus.Boolean(False, variant_level=1))
544
if os.WIFEXITED(condition):
545
exitstatus = os.WEXITSTATUS(condition)
1512
def checker_callback(self, source, condition,
1513
connection, command, *args, **kwargs):
1514
ret = Client.checker_callback(self, source, condition,
1515
connection, command, *args,
1516
**kwargs)
1517
exitstatus = self.last_checker_status
1518
if exitstatus >= 0:
546
1519
# Emit D-Bus signal
547
1520
self.CheckerCompleted(dbus.Int16(exitstatus),
548
dbus.Int64(condition),
1521
# This is specific to GNU libC
1522
dbus.Int64(exitstatus << 8),
549
1523
dbus.String(command))
550
1524
else:
551
1525
# Emit D-Bus signal
552
1526
self.CheckerCompleted(dbus.Int16(-1),
553
dbus.Int64(condition),
1527
dbus.Int64(
1528
# This is specific to GNU libC
1529
(exitstatus << 8)
1530
| self.last_checker_signal),
554
1531
dbus.String(command))
555
556
return Client.checker_callback(self, pid, condition, command,
557
*args, **kwargs)
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
1532
return ret
567
1533
568
1534
def start_checker(self, *args, **kwargs):
569
old_checker = self.checker
570
if self.checker is not None:
571
old_checker_pid = self.checker.pid
572
else:
573
old_checker_pid = None
1535
old_checker_pid = getattr(self.checker, "pid", None)
574
1536
r = Client.start_checker(self, *args, **kwargs)
575
1537
# Only if new checker process was started
576
1538
if (self.checker is not None
577
1539
and old_checker_pid != self.checker.pid):
578
1540
# Emit D-Bus signal
579
1541
self.CheckerStarted(self.current_checker_command)
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()
1542
return r
1543
1544
def _reset_approved(self):
1545
self.approved = None
1546
return False
1547
1548
def approve(self, value=True):
1549
self.approved = value
1550
gobject.timeout_add(int(self.approval_duration.total_seconds()
1551
* 1000), self._reset_approved)
1552
self.send_changedstate()
1553
1554
## D-Bus methods, signals & properties
1555
1556
## Interfaces
1557
1558
## Signals
601
1559
602
1560
# CheckerCompleted - signal
603
@dbus.service.signal(_interface, signature=u"nxs")
1561
@dbus.service.signal(_interface, signature="nxs")
604
1562
def CheckerCompleted(self, exitcode, waitstatus, command):
605
1563
"D-Bus signal"
606
1564
pass
607
1565
608
1566
# CheckerStarted - signal
609
@dbus.service.signal(_interface, signature=u"s")
1567
@dbus.service.signal(_interface, signature="s")
610
1568
def CheckerStarted(self, command):
611
1569
"D-Bus signal"
612
1570
pass
613
1571
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
662
1572
# PropertyChanged - signal
663
@dbus.service.signal(_interface, signature=u"sv")
1573
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1574
@dbus.service.signal(_interface, signature="sv")
664
1575
def PropertyChanged(self, property, value):
665
1576
"D-Bus signal"
666
1577
pass
667
1578
668
# ReceivedSecret - signal
1579
# GotSecret - signal
669
1580
@dbus.service.signal(_interface)
670
def ReceivedSecret(self):
671
"D-Bus signal"
1581
def GotSecret(self):
1582
"""D-Bus signal
1583
Is sent after a successful transfer of secret from the Mandos
1584
server to mandos-client
1585
"""
672
1586
pass
673
1587
674
1588
# Rejected - signal
675
@dbus.service.signal(_interface)
676
def Rejected(self):
1589
@dbus.service.signal(_interface, signature="s")
1590
def Rejected(self, reason):
677
1591
"D-Bus signal"
678
1592
pass
679
1593
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)))
1594
# NeedApproval - signal
1595
@dbus.service.signal(_interface, signature="tb")
1596
def NeedApproval(self, timeout, default):
1597
"D-Bus signal"
1598
return self.need_approval()
1599
1600
## Methods
1601
1602
# Approve - method
1603
@dbus.service.method(_interface, in_signature="b")
1604
def Approve(self, value):
1605
self.approve(value)
1606
1607
# CheckedOK - method
1608
@dbus.service.method(_interface)
1609
def CheckedOK(self):
1610
self.checked_ok()
723
1611
724
1612
# Enable - method
1613
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
725
1614
@dbus.service.method(_interface)
726
1615
def Enable(self):
727
1616
"D-Bus method"
728
1617
self.enable()
729
1618
730
1619
# StartChecker - method
1620
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
731
1621
@dbus.service.method(_interface)
732
1622
def StartChecker(self):
733
1623
"D-Bus method"
734
1624
self.start_checker()
735
1625
736
1626
# Disable - method
1627
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
737
1628
@dbus.service.method(_interface)
738
1629
def Disable(self):
739
1630
"D-Bus method"
740
1631
self.disable()
741
1632
742
1633
# StopChecker - method
1634
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
743
1635
@dbus.service.method(_interface)
744
1636
def StopChecker(self):
745
1637
self.stop_checker()
746
1638
1639
## Properties
1640
1641
# ApprovalPending - property
1642
@dbus_service_property(_interface, signature="b", access="read")
1643
def ApprovalPending_dbus_property(self):
1644
return dbus.Boolean(bool(self.approvals_pending))
1645
1646
# ApprovedByDefault - property
1647
@dbus_service_property(_interface,
1648
signature="b",
1649
access="readwrite")
1650
def ApprovedByDefault_dbus_property(self, value=None):
1651
if value is None: # get
1652
return dbus.Boolean(self.approved_by_default)
1653
self.approved_by_default = bool(value)
1654
1655
# ApprovalDelay - property
1656
@dbus_service_property(_interface,
1657
signature="t",
1658
access="readwrite")
1659
def ApprovalDelay_dbus_property(self, value=None):
1660
if value is None: # get
1661
return dbus.UInt64(self.approval_delay.total_seconds()
1662
* 1000)
1663
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1664
1665
# ApprovalDuration - property
1666
@dbus_service_property(_interface,
1667
signature="t",
1668
access="readwrite")
1669
def ApprovalDuration_dbus_property(self, value=None):
1670
if value is None: # get
1671
return dbus.UInt64(self.approval_duration.total_seconds()
1672
* 1000)
1673
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1674
1675
# Name - property
1676
@dbus_annotations(
1677
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1678
@dbus_service_property(_interface, signature="s", access="read")
1679
def Name_dbus_property(self):
1680
return dbus.String(self.name)
1681
1682
# Fingerprint - property
1683
@dbus_annotations(
1684
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1685
@dbus_service_property(_interface, signature="s", access="read")
1686
def Fingerprint_dbus_property(self):
1687
return dbus.String(self.fingerprint)
1688
1689
# Host - property
1690
@dbus_service_property(_interface,
1691
signature="s",
1692
access="readwrite")
1693
def Host_dbus_property(self, value=None):
1694
if value is None: # get
1695
return dbus.String(self.host)
1696
self.host = str(value)
1697
1698
# Created - property
1699
@dbus_annotations(
1700
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1701
@dbus_service_property(_interface, signature="s", access="read")
1702
def Created_dbus_property(self):
1703
return datetime_to_dbus(self.created)
1704
1705
# LastEnabled - property
1706
@dbus_service_property(_interface, signature="s", access="read")
1707
def LastEnabled_dbus_property(self):
1708
return datetime_to_dbus(self.last_enabled)
1709
1710
# Enabled - property
1711
@dbus_service_property(_interface,
1712
signature="b",
1713
access="readwrite")
1714
def Enabled_dbus_property(self, value=None):
1715
if value is None: # get
1716
return dbus.Boolean(self.enabled)
1717
if value:
1718
self.enable()
1719
else:
1720
self.disable()
1721
1722
# LastCheckedOK - property
1723
@dbus_service_property(_interface,
1724
signature="s",
1725
access="readwrite")
1726
def LastCheckedOK_dbus_property(self, value=None):
1727
if value is not None:
1728
self.checked_ok()
1729
return
1730
return datetime_to_dbus(self.last_checked_ok)
1731
1732
# LastCheckerStatus - property
1733
@dbus_service_property(_interface, signature="n", access="read")
1734
def LastCheckerStatus_dbus_property(self):
1735
return dbus.Int16(self.last_checker_status)
1736
1737
# Expires - property
1738
@dbus_service_property(_interface, signature="s", access="read")
1739
def Expires_dbus_property(self):
1740
return datetime_to_dbus(self.expires)
1741
1742
# LastApprovalRequest - property
1743
@dbus_service_property(_interface, signature="s", access="read")
1744
def LastApprovalRequest_dbus_property(self):
1745
return datetime_to_dbus(self.last_approval_request)
1746
1747
# Timeout - property
1748
@dbus_service_property(_interface,
1749
signature="t",
1750
access="readwrite")
1751
def Timeout_dbus_property(self, value=None):
1752
if value is None: # get
1753
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1754
old_timeout = self.timeout
1755
self.timeout = datetime.timedelta(0, 0, 0, value)
1756
# Reschedule disabling
1757
if self.enabled:
1758
now = datetime.datetime.utcnow()
1759
self.expires += self.timeout - old_timeout
1760
if self.expires <= now:
1761
# The timeout has passed
1762
self.disable()
1763
else:
1764
if (getattr(self, "disable_initiator_tag", None)
1765
is None):
1766
return
1767
gobject.source_remove(self.disable_initiator_tag)
1768
self.disable_initiator_tag = gobject.timeout_add(
1769
int((self.expires - now).total_seconds() * 1000),
1770
self.disable)
1771
1772
# ExtendedTimeout - property
1773
@dbus_service_property(_interface,
1774
signature="t",
1775
access="readwrite")
1776
def ExtendedTimeout_dbus_property(self, value=None):
1777
if value is None: # get
1778
return dbus.UInt64(self.extended_timeout.total_seconds()
1779
* 1000)
1780
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1781
1782
# Interval - property
1783
@dbus_service_property(_interface,
1784
signature="t",
1785
access="readwrite")
1786
def Interval_dbus_property(self, value=None):
1787
if value is None: # get
1788
return dbus.UInt64(self.interval.total_seconds() * 1000)
1789
self.interval = datetime.timedelta(0, 0, 0, value)
1790
if getattr(self, "checker_initiator_tag", None) is None:
1791
return
1792
if self.enabled:
1793
# Reschedule checker run
1794
gobject.source_remove(self.checker_initiator_tag)
1795
self.checker_initiator_tag = gobject.timeout_add(
1796
value, self.start_checker)
1797
self.start_checker() # Start one now, too
1798
1799
# Checker - property
1800
@dbus_service_property(_interface,
1801
signature="s",
1802
access="readwrite")
1803
def Checker_dbus_property(self, value=None):
1804
if value is None: # get
1805
return dbus.String(self.checker_command)
1806
self.checker_command = str(value)
1807
1808
# CheckerRunning - property
1809
@dbus_service_property(_interface,
1810
signature="b",
1811
access="readwrite")
1812
def CheckerRunning_dbus_property(self, value=None):
1813
if value is None: # get
1814
return dbus.Boolean(self.checker is not None)
1815
if value:
1816
self.start_checker()
1817
else:
1818
self.stop_checker()
1819
1820
# ObjectPath - property
1821
@dbus_annotations(
1822
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
1823
"org.freedesktop.DBus.Deprecated": "true"})
1824
@dbus_service_property(_interface, signature="o", access="read")
1825
def ObjectPath_dbus_property(self):
1826
return self.dbus_object_path # is already a dbus.ObjectPath
1827
1828
# Secret = property
1829
@dbus_annotations(
1830
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
1831
"invalidates"})
1832
@dbus_service_property(_interface,
1833
signature="ay",
1834
access="write",
1835
byte_arrays=True)
1836
def Secret_dbus_property(self, value):
1837
self.secret = bytes(value)
1838
747
1839
del _interface
748
1840
749
1841
1842
class ProxyClient(object):
1843
def __init__(self, child_pipe, fpr, address):
1844
self._pipe = child_pipe
1845
self._pipe.send(('init', fpr, address))
1846
if not self._pipe.recv():
1847
raise KeyError(fpr)
1848
1849
def __getattribute__(self, name):
1850
if name == '_pipe':
1851
return super(ProxyClient, self).__getattribute__(name)
1852
self._pipe.send(('getattr', name))
1853
data = self._pipe.recv()
1854
if data[0] == 'data':
1855
return data[1]
1856
if data[0] == 'function':
1857
1858
def func(*args, **kwargs):
1859
self._pipe.send(('funcall', name, args, kwargs))
1860
return self._pipe.recv()[1]
1861
1862
return func
1863
1864
def __setattr__(self, name, value):
1865
if name == '_pipe':
1866
return super(ProxyClient, self).__setattr__(name, value)
1867
self._pipe.send(('setattr', name, value))
1868
1869
750
1870
class ClientHandler(socketserver.BaseRequestHandler, object):
751
1871
"""A class to handle client connections.
752
1872
754
1874
Note: This will run in its own forked process."""
755
1875
756
1876
def handle(self):
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:
762
session = (gnutls.connection
763
.ClientSession(self.request,
764
gnutls.connection
765
.X509Credentials()))
1877
with contextlib.closing(self.server.child_pipe) as child_pipe:
1878
logger.info("TCP connection from: %s",
1879
str(self.client_address))
1880
logger.debug("Pipe FD: %d",
1881
self.server.child_pipe.fileno())
766
1882
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
1883
session = gnutls.connection.ClientSession(
1884
self.request, gnutls.connection .X509Credentials())
775
1885
776
1886
# Note: gnutls.connection.X509Credentials is really a
777
1887
# generic GnuTLS certificate credentials object so long as
778
1888
# no X.509 keys are added to it. Therefore, we can use it
779
1889
# here despite using OpenPGP certificates.
780
1890
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"))
1891
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1892
# "+AES-256-CBC", "+SHA1",
1893
# "+COMP-NULL", "+CTYPE-OPENPGP",
1894
# "+DHE-DSS"))
785
1895
# Use a fallback default, since this MUST be set.
786
1896
priority = self.server.gnutls_priority
787
1897
if priority is None:
788
priority = u"NORMAL"
789
(gnutls.library.functions
790
.gnutls_priority_set_direct(session._c_object,
791
priority, None))
792
1898
priority = "NORMAL"
1899
gnutls.library.functions.gnutls_priority_set_direct(
1900
session._c_object, priority, None)
1901
1902
# Start communication using the Mandos protocol
1903
# Get protocol number
1904
line = self.request.makefile().readline()
1905
logger.debug("Protocol version: %r", line)
1906
try:
1907
if int(line.strip().split()[0]) > 1:
1908
raise RuntimeError(line)
1909
except (ValueError, IndexError, RuntimeError) as error:
1910
logger.error("Unknown protocol version: %s", error)
1911
return
1912
1913
# Start GnuTLS connection
793
1914
try:
794
1915
session.handshake()
795
except gnutls.errors.GNUTLSError, error:
796
logger.warning(u"Handshake failed: %s", error)
1916
except gnutls.errors.GNUTLSError as error:
1917
logger.warning("Handshake failed: %s", error)
797
1918
# Do not run session.bye() here: the session is not
798
1919
# established. Just abandon the request.
799
1920
return
800
logger.debug(u"Handshake succeeded")
1921
logger.debug("Handshake succeeded")
1922
1923
approval_required = False
801
1924
try:
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)
1925
try:
1926
fpr = self.fingerprint(
1927
self.peer_certificate(session))
1928
except (TypeError,
1929
gnutls.errors.GNUTLSError) as error:
1930
logger.warning("Bad certificate: %s", error)
1931
return
1932
logger.debug("Fingerprint: %s", fpr)
1933
1934
try:
1935
client = ProxyClient(child_pipe, fpr,
1936
self.client_address)
1937
except KeyError:
1938
return
1939
1940
if client.approval_delay:
1941
delay = client.approval_delay
1942
client.approvals_pending += 1
1943
approval_required = True
1944
1945
while True:
1946
if not client.enabled:
1947
logger.info("Client %s is disabled",
1948
client.name)
1949
if self.server.use_dbus:
1950
# Emit D-Bus signal
1951
client.Rejected("Disabled")
1952
return
1953
1954
if client.approved or not client.approval_delay:
1955
#We are approved or approval is disabled
1956
break
1957
elif client.approved is None:
1958
logger.info("Client %s needs approval",
1959
client.name)
1960
if self.server.use_dbus:
1961
# Emit D-Bus signal
1962
client.NeedApproval(
1963
client.approval_delay.total_seconds()
1964
* 1000, client.approved_by_default)
1965
else:
1966
logger.warning("Client %s was not approved",
1967
client.name)
1968
if self.server.use_dbus:
1969
# Emit D-Bus signal
1970
client.Rejected("Denied")
1971
return
1972
1973
#wait until timeout or approved
1974
time = datetime.datetime.now()
1975
client.changedstate.acquire()
1976
client.changedstate.wait(delay.total_seconds())
1977
client.changedstate.release()
1978
time2 = datetime.datetime.now()
1979
if (time2 - time) >= delay:
1980
if not client.approved_by_default:
1981
logger.warning("Client %s timed out while"
1982
" waiting for approval",
1983
client.name)
1984
if self.server.use_dbus:
1985
# Emit D-Bus signal
1986
client.Rejected("Approval timed out")
1987
return
1988
else:
1989
break
1990
else:
1991
delay -= time2 - time
1992
1993
sent_size = 0
1994
while sent_size < len(client.secret):
1995
try:
1996
sent = session.send(client.secret[sent_size:])
1997
except gnutls.errors.GNUTLSError as error:
1998
logger.warning("gnutls send failed",
1999
exc_info=error)
2000
return
2001
logger.debug("Sent: %d, remaining: %d", sent,
2002
len(client.secret) - (sent_size
2003
+ sent))
2004
sent_size += sent
2005
2006
logger.info("Sending secret to %s", client.name)
2007
# bump the timeout using extended_timeout
2008
client.bump_timeout(client.extended_timeout)
2009
if self.server.use_dbus:
2010
# Emit D-Bus signal
2011
client.GotSecret()
808
2012
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()
2013
finally:
2014
if approval_required:
2015
client.approvals_pending -= 1
2016
try:
2017
session.bye()
2018
except gnutls.errors.GNUTLSError as error:
2019
logger.warning("GnuTLS bye failed",
2020
exc_info=error)
834
2021
835
2022
@staticmethod
836
2023
def peer_certificate(session):
837
2024
"Return the peer's OpenPGP certificate as a bytestring"
838
2025
# If not an OpenPGP certificate...
839
if (gnutls.library.functions
840
.gnutls_certificate_type_get(session._c_object)
2026
if (gnutls.library.functions.gnutls_certificate_type_get(
2027
session._c_object)
841
2028
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
842
2029
# ...do the normal thing
843
2030
return session.peer_certificate
846
2033
.gnutls_certificate_get_peers
847
2034
(session._c_object, ctypes.byref(list_size)))
848
2035
if not bool(cert_list) and list_size.value != 0:
849
raise gnutls.errors.GNUTLSError(u"error getting peer"
850
u" certificate")
2036
raise gnutls.errors.GNUTLSError("error getting peer"
2037
" certificate")
851
2038
if list_size.value == 0:
852
2039
return None
853
2040
cert = cert_list[0]
857
2044
def fingerprint(openpgp):
858
2045
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
859
2046
# New GnuTLS "datum" with the OpenPGP public key
860
datum = (gnutls.library.types
861
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
862
ctypes.POINTER
863
(ctypes.c_ubyte)),
864
ctypes.c_uint(len(openpgp))))
2047
datum = gnutls.library.types.gnutls_datum_t(
2048
ctypes.cast(ctypes.c_char_p(openpgp),
2049
ctypes.POINTER(ctypes.c_ubyte)),
2050
ctypes.c_uint(len(openpgp)))
865
2051
# New empty GnuTLS certificate
866
2052
crt = gnutls.library.types.gnutls_openpgp_crt_t()
867
(gnutls.library.functions
868
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2053
gnutls.library.functions.gnutls_openpgp_crt_init(
2054
ctypes.byref(crt))
869
2055
# Import the OpenPGP public key into the certificate
870
(gnutls.library.functions
871
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
872
gnutls.library.constants
873
.GNUTLS_OPENPGP_FMT_RAW))
2056
gnutls.library.functions.gnutls_openpgp_crt_import(
2057
crt, ctypes.byref(datum),
2058
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
874
2059
# Verify the self signature in the key
875
2060
crtverify = ctypes.c_uint()
876
(gnutls.library.functions
877
.gnutls_openpgp_crt_verify_self(crt, 0,
878
ctypes.byref(crtverify)))
2061
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
2062
crt, 0, ctypes.byref(crtverify))
879
2063
if crtverify.value != 0:
880
2064
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
881
raise (gnutls.errors.CertificateSecurityError
882
(u"Verify failed"))
2065
raise gnutls.errors.CertificateSecurityError(
2066
"Verify failed")
883
2067
# New buffer for the fingerprint
884
2068
buf = ctypes.create_string_buffer(20)
885
2069
buf_len = ctypes.c_size_t()
886
2070
# Get the fingerprint from the certificate into the buffer
887
(gnutls.library.functions
888
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
889
ctypes.byref(buf_len)))
2071
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
2072
crt, ctypes.byref(buf), ctypes.byref(buf_len))
890
2073
# Deinit the certificate
891
2074
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
892
2075
# Convert the buffer to a Python bytestring
893
2076
fpr = ctypes.string_at(buf, buf_len.value)
894
2077
# Convert the bytestring to hexadecimal notation
895
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2078
hex_fpr = binascii.hexlify(fpr).upper()
896
2079
return hex_fpr
897
2080
898
2081
899
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
900
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
2082
class MultiprocessingMixIn(object):
2083
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2084
2085
def sub_process_main(self, request, address):
2086
try:
2087
self.finish_request(request, address)
2088
except Exception:
2089
self.handle_error(request, address)
2090
self.close_request(request)
2091
2092
def process_request(self, request, address):
2093
"""Start a new process to process the request."""
2094
proc = multiprocessing.Process(target = self.sub_process_main,
2095
args = (request, address))
2096
proc.start()
2097
return proc
2098
2099
2100
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2101
""" adds a pipe to the MixIn """
2102
901
2103
def process_request(self, request, client_address):
902
2104
"""Overrides and wraps the original process_request().
903
2105
904
2106
This function creates a new pipe in self.pipe
905
2107
"""
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):
2108
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2109
2110
proc = MultiprocessingMixIn.process_request(self, request,
2111
client_address)
2112
self.child_pipe.close()
2113
self.add_pipe(parent_pipe, proc)
2114
2115
def add_pipe(self, parent_pipe, proc):
912
2116
"""Dummy function; override as necessary"""
913
os.close(pipe)
914
915
916
class IPv6_TCPServer(ForkingMixInWithPipe,
2117
raise NotImplementedError()
2118
2119
2120
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
917
2121
socketserver.TCPServer, object):
918
2122
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
919
2123
922
2126
interface: None or a network interface name (string)
923
2127
use_ipv6: Boolean; to use IPv6 or not
924
2128
"""
2129
925
2130
def __init__(self, server_address, RequestHandlerClass,
926
interface=None, use_ipv6=True):
2131
interface=None,
2132
use_ipv6=True,
2133
socketfd=None):
2134
"""If socketfd is set, use that file descriptor instead of
2135
creating a new one with socket.socket().
2136
"""
927
2137
self.interface = interface
928
2138
if use_ipv6:
929
2139
self.address_family = socket.AF_INET6
2140
if socketfd is not None:
2141
# Save the file descriptor
2142
self.socketfd = socketfd
2143
# Save the original socket.socket() function
2144
self.socket_socket = socket.socket
2145
# To implement --socket, we monkey patch socket.socket.
2146
#
2147
# (When socketserver.TCPServer is a new-style class, we
2148
# could make self.socket into a property instead of monkey
2149
# patching socket.socket.)
2150
#
2151
# Create a one-time-only replacement for socket.socket()
2152
@functools.wraps(socket.socket)
2153
def socket_wrapper(*args, **kwargs):
2154
# Restore original function so subsequent calls are
2155
# not affected.
2156
socket.socket = self.socket_socket
2157
del self.socket_socket
2158
# This time only, return a new socket object from the
2159
# saved file descriptor.
2160
return socket.fromfd(self.socketfd, *args, **kwargs)
2161
# Replace socket.socket() function with wrapper
2162
socket.socket = socket_wrapper
2163
# The socketserver.TCPServer.__init__ will call
2164
# socket.socket(), which might be our replacement,
2165
# socket_wrapper(), if socketfd was set.
930
2166
socketserver.TCPServer.__init__(self, server_address,
931
2167
RequestHandlerClass)
2168
932
2169
def server_bind(self):
933
2170
"""This overrides the normal server_bind() function
934
2171
to bind to an interface if one was specified, and also NOT to
935
2172
bind to an address or port if they were not specified."""
936
2173
if self.interface is not None:
937
2174
if SO_BINDTODEVICE is None:
938
logger.error(u"SO_BINDTODEVICE does not exist;"
939
u" cannot bind to interface %s",
2175
logger.error("SO_BINDTODEVICE does not exist;"
2176
" cannot bind to interface %s",
940
2177
self.interface)
941
2178
else:
942
2179
try:
943
self.socket.setsockopt(socket.SOL_SOCKET,
944
SO_BINDTODEVICE,
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)
2180
self.socket.setsockopt(
2181
socket.SOL_SOCKET, SO_BINDTODEVICE,
2182
(self.interface + "\0").encode("utf-8"))
2183
except socket.error as error:
2184
if error.errno == errno.EPERM:
2185
logger.error("No permission to bind to"
2186
" interface %s", self.interface)
2187
elif error.errno == errno.ENOPROTOOPT:
2188
logger.error("SO_BINDTODEVICE not available;"
2189
" cannot bind to interface %s",
2190
self.interface)
2191
elif error.errno == errno.ENODEV:
2192
logger.error("Interface %s does not exist,"
2193
" cannot bind", self.interface)
956
2194
else:
957
2195
raise
958
2196
# Only bind(2) the socket if we really need to.
959
2197
if self.server_address[0] or self.server_address[1]:
960
2198
if not self.server_address[0]:
961
2199
if self.address_family == socket.AF_INET6:
962
any_address = u"::" # in6addr_any
2200
any_address = "::" # in6addr_any
963
2201
else:
964
any_address = socket.INADDR_ANY
2202
any_address = "0.0.0.0" # INADDR_ANY
965
2203
self.server_address = (any_address,
966
2204
self.server_address[1])
967
2205
elif not self.server_address[1]:
968
self.server_address = (self.server_address[0],
969
0)
2206
self.server_address = (self.server_address[0], 0)
970
2207
# if self.interface:
971
2208
# self.server_address = (self.server_address[0],
972
2209
# 0, # port
983
2220
clients: set of Client objects
984
2221
gnutls_priority GnuTLS priority string
985
2222
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
989
2223
990
2224
Assumes a gobject.MainLoop event loop.
991
2225
"""
2226
992
2227
def __init__(self, server_address, RequestHandlerClass,
993
interface=None, use_ipv6=True, clients=None,
994
gnutls_priority=None, use_dbus=True):
2228
interface=None,
2229
use_ipv6=True,
2230
clients=None,
2231
gnutls_priority=None,
2232
use_dbus=True,
2233
socketfd=None):
995
2234
self.enabled = False
996
2235
self.clients = clients
997
2236
if self.clients is None:
998
self.clients = set()
2237
self.clients = {}
999
2238
self.use_dbus = use_dbus
1000
2239
self.gnutls_priority = gnutls_priority
1001
2240
IPv6_TCPServer.__init__(self, server_address,
1002
2241
RequestHandlerClass,
1003
2242
interface = interface,
1004
use_ipv6 = use_ipv6)
2243
use_ipv6 = use_ipv6,
2244
socketfd = socketfd)
2245
1005
2246
def server_activate(self):
1006
2247
if self.enabled:
1007
2248
return socketserver.TCPServer.server_activate(self)
2249
1008
2250
def enable(self):
1009
2251
self.enabled = True
1010
def add_pipe(self, pipe):
2252
2253
def add_pipe(self, parent_pipe, proc):
1011
2254
# Call "handle_ipc" for both data and EOF events
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)
2255
gobject.io_add_watch(
2256
parent_pipe.fileno(),
2257
gobject.IO_IN | gobject.IO_HUP,
2258
functools.partial(self.handle_ipc,
2259
parent_pipe = parent_pipe,
2260
proc = proc))
2261
2262
def handle_ipc(self, source, condition,
2263
parent_pipe=None,
2264
proc = None,
2265
client_object=None):
2266
# error, or the other end of multiprocessing.Pipe has closed
2267
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2268
# Wait for other process to exit
2269
proc.join()
2270
return False
2271
2272
# Read a request from the child
2273
request = parent_pipe.recv()
2274
command = request[0]
2275
2276
if command == 'init':
2277
fpr = request[1]
2278
address = request[2]
2279
2280
for c in self.clients.itervalues():
2281
if c.fingerprint == fpr:
2282
client = c
2283
break
2284
else:
2285
logger.info("Client not found for fingerprint: %s, ad"
2286
"dress: %s", fpr, address)
2287
if self.use_dbus:
2288
# Emit D-Bus signal
2289
mandos_dbus_service.ClientNotFound(fpr,
2290
address[0])
2291
parent_pipe.send(False)
2292
return False
2293
2294
gobject.io_add_watch(
2295
parent_pipe.fileno(),
2296
gobject.IO_IN | gobject.IO_HUP,
2297
functools.partial(self.handle_ipc,
2298
parent_pipe = parent_pipe,
2299
proc = proc,
2300
client_object = client))
2301
parent_pipe.send(True)
2302
# remove the old hook in favor of the new above hook on
2303
# same fileno
2304
return False
2305
if command == 'funcall':
2306
funcname = request[1]
2307
args = request[2]
2308
kwargs = request[3]
2309
2310
parent_pipe.send(('data', getattr(client_object,
2311
funcname)(*args,
2312
**kwargs)))
2313
2314
if command == 'getattr':
2315
attrname = request[1]
2316
if isinstance(client_object.__getattribute__(attrname),
2317
collections.Callable):
2318
parent_pipe.send(('function', ))
2319
else:
2320
parent_pipe.send((
2321
'data', client_object.__getattribute__(attrname)))
2322
2323
if command == 'setattr':
2324
attrname = request[1]
2325
value = request[2]
2326
setattr(client_object, attrname, value)
2327
2328
return True
2329
2330
2331
def rfc3339_duration_to_delta(duration):
2332
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2333
2334
>>> rfc3339_duration_to_delta("P7D")
2335
datetime.timedelta(7)
2336
>>> rfc3339_duration_to_delta("PT60S")
2337
datetime.timedelta(0, 60)
2338
>>> rfc3339_duration_to_delta("PT60M")
2339
datetime.timedelta(0, 3600)
2340
>>> rfc3339_duration_to_delta("PT24H")
2341
datetime.timedelta(1)
2342
>>> rfc3339_duration_to_delta("P1W")
2343
datetime.timedelta(7)
2344
>>> rfc3339_duration_to_delta("PT5M30S")
2345
datetime.timedelta(0, 330)
2346
>>> rfc3339_duration_to_delta("P1DT3M20S")
2347
datetime.timedelta(1, 200)
2348
"""
2349
2350
# Parsing an RFC 3339 duration with regular expressions is not
2351
# possible - there would have to be multiple places for the same
2352
# values, like seconds. The current code, while more esoteric, is
2353
# cleaner without depending on a parsing library. If Python had a
2354
# built-in library for parsing we would use it, but we'd like to
2355
# avoid excessive use of external libraries.
2356
2357
# New type for defining tokens, syntax, and semantics all-in-one
2358
Token = collections.namedtuple("Token", (
2359
"regexp", # To match token; if "value" is not None, must have
2360
# a "group" containing digits
2361
"value", # datetime.timedelta or None
2362
"followers")) # Tokens valid after this token
2363
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2364
# the "duration" ABNF definition in RFC 3339, Appendix A.
2365
token_end = Token(re.compile(r"$"), None, frozenset())
2366
token_second = Token(re.compile(r"(\d+)S"),
2367
datetime.timedelta(seconds=1),
2368
frozenset((token_end, )))
2369
token_minute = Token(re.compile(r"(\d+)M"),
2370
datetime.timedelta(minutes=1),
2371
frozenset((token_second, token_end)))
2372
token_hour = Token(re.compile(r"(\d+)H"),
2373
datetime.timedelta(hours=1),
2374
frozenset((token_minute, token_end)))
2375
token_time = Token(re.compile(r"T"),
2376
None,
2377
frozenset((token_hour, token_minute,
2378
token_second)))
2379
token_day = Token(re.compile(r"(\d+)D"),
2380
datetime.timedelta(days=1),
2381
frozenset((token_time, token_end)))
2382
token_month = Token(re.compile(r"(\d+)M"),
2383
datetime.timedelta(weeks=4),
2384
frozenset((token_day, token_end)))
2385
token_year = Token(re.compile(r"(\d+)Y"),
2386
datetime.timedelta(weeks=52),
2387
frozenset((token_month, token_end)))
2388
token_week = Token(re.compile(r"(\d+)W"),
2389
datetime.timedelta(weeks=1),
2390
frozenset((token_end, )))
2391
token_duration = Token(re.compile(r"P"), None,
2392
frozenset((token_year, token_month,
2393
token_day, token_time,
2394
token_week)))
2395
# Define starting values
2396
value = datetime.timedelta() # Value so far
2397
found_token = None
2398
followers = frozenset((token_duration, )) # Following valid tokens
2399
s = duration # String left to parse
2400
# Loop until end token is found
2401
while found_token is not token_end:
2402
# Search for any currently valid tokens
2403
for token in followers:
2404
match = token.regexp.match(s)
2405
if match is not None:
2406
# Token found
2407
if token.value is not None:
2408
# Value found, parse digits
2409
factor = int(match.group(1), 10)
2410
# Add to value so far
2411
value += factor * token.value
2412
# Strip token from string
2413
s = token.regexp.sub("", s, 1)
2414
# Go to found token
2415
found_token = token
2416
# Set valid next tokens
2417
followers = found_token.followers
2418
break
1079
2419
else:
1080
logger.error(u"Unknown IPC command: %r", cmdline)
1081
1082
# Keep calling this function
1083
return True
2420
# No currently valid tokens were found
2421
raise ValueError("Invalid RFC 3339 duration: {!r}"
2422
.format(duration))
2423
# End token found
2424
return value
1084
2425
1085
2426
1086
2427
def string_to_delta(interval):
1087
2428
"""Parse a string and return a datetime.timedelta
1088
2429
1089
>>> string_to_delta(u'7d')
2430
>>> string_to_delta('7d')
1090
2431
datetime.timedelta(7)
1091
>>> string_to_delta(u'60s')
2432
>>> string_to_delta('60s')
1092
2433
datetime.timedelta(0, 60)
1093
>>> string_to_delta(u'60m')
2434
>>> string_to_delta('60m')
1094
2435
datetime.timedelta(0, 3600)
1095
>>> string_to_delta(u'24h')
2436
>>> string_to_delta('24h')
1096
2437
datetime.timedelta(1)
1097
>>> string_to_delta(u'1w')
2438
>>> string_to_delta('1w')
1098
2439
datetime.timedelta(7)
1099
>>> string_to_delta(u'5m 30s')
2440
>>> string_to_delta('5m 30s')
1100
2441
datetime.timedelta(0, 330)
1101
2442
"""
2443
2444
try:
2445
return rfc3339_duration_to_delta(interval)
2446
except ValueError:
2447
pass
2448
1102
2449
timevalue = datetime.timedelta(0)
1103
2450
for s in interval.split():
1104
2451
try:
1105
suffix = unicode(s[-1])
2452
suffix = s[-1]
1106
2453
value = int(s[:-1])
1107
if suffix == u"d":
2454
if suffix == "d":
1108
2455
delta = datetime.timedelta(value)
1109
elif suffix == u"s":
2456
elif suffix == "s":
1110
2457
delta = datetime.timedelta(0, value)
1111
elif suffix == u"m":
2458
elif suffix == "m":
1112
2459
delta = datetime.timedelta(0, 0, 0, 0, value)
1113
elif suffix == u"h":
2460
elif suffix == "h":
1114
2461
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1115
elif suffix == u"w":
2462
elif suffix == "w":
1116
2463
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1117
2464
else:
1118
raise ValueError
1119
except (ValueError, IndexError):
1120
raise ValueError
2465
raise ValueError("Unknown suffix {!r}".format(suffix))
2466
except IndexError as e:
2467
raise ValueError(*(e.args))
1121
2468
timevalue += delta
1122
2469
return timevalue
1123
2470
1124
2471
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
1149
2472
def daemon(nochdir = False, noclose = False):
1150
2473
"""See daemon(3). Standard BSD Unix function.
1151
2474
1154
2477
sys.exit()
1155
2478
os.setsid()
1156
2479
if not nochdir:
1157
os.chdir(u"/")
2480
os.chdir("/")
1158
2481
if os.fork():
1159
2482
sys.exit()
1160
2483
if not noclose:
1161
2484
# Close all standard open file descriptors
1162
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2485
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1163
2486
if not stat.S_ISCHR(os.fstat(null).st_mode):
1164
2487
raise OSError(errno.ENODEV,
1165
u"/dev/null not a character device")
2488
"{} not a character device"
2489
.format(os.devnull))
1166
2490
os.dup2(null, sys.stdin.fileno())
1167
2491
os.dup2(null, sys.stdout.fileno())
1168
2492
os.dup2(null, sys.stderr.fileno())
1172
2496
1173
2497
def main():
1174
2498
1175
######################################################################
2499
##################################################################
1176
2500
# Parsing of options, both command line and config file
1177
2501
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", help=u"Do not provide D-Bus"
1200
u" system bus interface")
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]
2502
parser = argparse.ArgumentParser()
2503
parser.add_argument("-v", "--version", action="version",
2504
version = "%(prog)s {}".format(version),
2505
help="show version number and exit")
2506
parser.add_argument("-i", "--interface", metavar="IF",
2507
help="Bind to interface IF")
2508
parser.add_argument("-a", "--address",
2509
help="Address to listen for requests on")
2510
parser.add_argument("-p", "--port", type=int,
2511
help="Port number to receive requests on")
2512
parser.add_argument("--check", action="store_true",
2513
help="Run self-test")
2514
parser.add_argument("--debug", action="store_true",
2515
help="Debug mode; run in foreground and log"
2516
" to terminal", default=None)
2517
parser.add_argument("--debuglevel", metavar="LEVEL",
2518
help="Debug level for stdout output")
2519
parser.add_argument("--priority", help="GnuTLS"
2520
" priority string (see GnuTLS documentation)")
2521
parser.add_argument("--servicename",
2522
metavar="NAME", help="Zeroconf service name")
2523
parser.add_argument("--configdir",
2524
default="/etc/mandos", metavar="DIR",
2525
help="Directory to search for configuration"
2526
" files")
2527
parser.add_argument("--no-dbus", action="store_false",
2528
dest="use_dbus", help="Do not provide D-Bus"
2529
" system bus interface", default=None)
2530
parser.add_argument("--no-ipv6", action="store_false",
2531
dest="use_ipv6", help="Do not use IPv6",
2532
default=None)
2533
parser.add_argument("--no-restore", action="store_false",
2534
dest="restore", help="Do not restore stored"
2535
" state", default=None)
2536
parser.add_argument("--socket", type=int,
2537
help="Specify a file descriptor to a network"
2538
" socket to use instead of creating one")
2539
parser.add_argument("--statedir", metavar="DIR",
2540
help="Directory to save/restore state in")
2541
parser.add_argument("--foreground", action="store_true",
2542
help="Run in foreground", default=None)
2543
parser.add_argument("--no-zeroconf", action="store_false",
2544
dest="zeroconf", help="Do not use Zeroconf",
2545
default=None)
2546
2547
options = parser.parse_args()
1204
2548
1205
2549
if options.check:
1206
2550
import doctest
1207
doctest.testmod()
1208
sys.exit()
2551
fail_count, test_count = doctest.testmod()
2552
sys.exit(os.EX_OK if fail_count == 0 else 1)
1209
2553
1210
2554
# Default values for config file for server-global settings
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",
1220
}
2555
server_defaults = { "interface": "",
2556
"address": "",
2557
"port": "",
2558
"debug": "False",
2559
"priority":
2560
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2561
":+SIGN-DSA-SHA256",
2562
"servicename": "Mandos",
2563
"use_dbus": "True",
2564
"use_ipv6": "True",
2565
"debuglevel": "",
2566
"restore": "True",
2567
"socket": "",
2568
"statedir": "/var/lib/mandos",
2569
"foreground": "False",
2570
"zeroconf": "True",
2571
}
1221
2572
1222
2573
# Parse config file for server-global settings
1223
2574
server_config = configparser.SafeConfigParser(server_defaults)
1224
2575
del server_defaults
1225
server_config.read(os.path.join(options.configdir,
1226
u"mandos.conf"))
2576
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1227
2577
# Convert the SafeConfigParser object to a dict
1228
2578
server_settings = server_config.defaults()
1229
2579
# Use the appropriate methods on the non-string config options
1230
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1231
server_settings[option] = server_config.getboolean(u"DEFAULT",
2580
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2581
server_settings[option] = server_config.getboolean("DEFAULT",
1232
2582
option)
1233
2583
if server_settings["port"]:
1234
server_settings["port"] = server_config.getint(u"DEFAULT",
1235
u"port")
2584
server_settings["port"] = server_config.getint("DEFAULT",
2585
"port")
2586
if server_settings["socket"]:
2587
server_settings["socket"] = server_config.getint("DEFAULT",
2588
"socket")
2589
# Later, stdin will, and stdout and stderr might, be dup'ed
2590
# over with an opened os.devnull. But we don't want this to
2591
# happen with a supplied network socket.
2592
if 0 <= server_settings["socket"] <= 2:
2593
server_settings["socket"] = os.dup(server_settings
2594
["socket"])
1236
2595
del server_config
1237
2596
1238
2597
# Override the settings from the config file with command line
1239
2598
# options, if set.
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"):
2599
for option in ("interface", "address", "port", "debug",
2600
"priority", "servicename", "configdir", "use_dbus",
2601
"use_ipv6", "debuglevel", "restore", "statedir",
2602
"socket", "foreground", "zeroconf"):
1243
2603
value = getattr(options, option)
1244
2604
if value is not None:
1245
2605
server_settings[option] = value
1246
2606
del options
1247
2607
# Force all strings to be unicode
1248
2608
for option in server_settings.keys():
1249
if type(server_settings[option]) is str:
1250
server_settings[option] = unicode(server_settings[option])
2609
if isinstance(server_settings[option], bytes):
2610
server_settings[option] = (server_settings[option]
2611
.decode("utf-8"))
2612
# Force all boolean options to be boolean
2613
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2614
"foreground", "zeroconf"):
2615
server_settings[option] = bool(server_settings[option])
2616
# Debug implies foreground
2617
if server_settings["debug"]:
2618
server_settings["foreground"] = True
1251
2619
# Now we have our good server settings in "server_settings"
1252
2620
1253
2621
##################################################################
1254
2622
2623
if (not server_settings["zeroconf"]
2624
and not (server_settings["port"]
2625
or server_settings["socket"] != "")):
2626
parser.error("Needs port or socket to work without Zeroconf")
2627
1255
2628
# For convenience
1256
debug = server_settings[u"debug"]
1257
use_dbus = server_settings[u"use_dbus"]
1258
use_ipv6 = server_settings[u"use_ipv6"]
1259
1260
if not debug:
1261
syslogger.setLevel(logging.WARNING)
1262
console.setLevel(logging.WARNING)
1263
1264
if server_settings[u"servicename"] != u"Mandos":
1265
syslogger.setFormatter(logging.Formatter
1266
(u'Mandos (%s) [%%(process)d]:'
1267
u' %%(levelname)s: %%(message)s'
1268
% server_settings[u"servicename"]))
2629
debug = server_settings["debug"]
2630
debuglevel = server_settings["debuglevel"]
2631
use_dbus = server_settings["use_dbus"]
2632
use_ipv6 = server_settings["use_ipv6"]
2633
stored_state_path = os.path.join(server_settings["statedir"],
2634
stored_state_file)
2635
foreground = server_settings["foreground"]
2636
zeroconf = server_settings["zeroconf"]
2637
2638
if debug:
2639
initlogger(debug, logging.DEBUG)
2640
else:
2641
if not debuglevel:
2642
initlogger(debug)
2643
else:
2644
level = getattr(logging, debuglevel.upper())
2645
initlogger(debug, level)
2646
2647
if server_settings["servicename"] != "Mandos":
2648
syslogger.setFormatter(
2649
logging.Formatter('Mandos ({}) [%(process)d]:'
2650
' %(levelname)s: %(message)s'.format(
2651
server_settings["servicename"])))
1269
2652
1270
2653
# Parse config file with clients
1271
client_defaults = { u"timeout": u"1h",
1272
u"interval": u"5m",
1273
u"checker": u"fping -q -- %%(host)s",
1274
u"host": u"",
1275
}
1276
client_config = configparser.SafeConfigParser(client_defaults)
1277
client_config.read(os.path.join(server_settings[u"configdir"],
1278
u"clients.conf"))
2654
client_config = configparser.SafeConfigParser(Client
2655
.client_defaults)
2656
client_config.read(os.path.join(server_settings["configdir"],
2657
"clients.conf"))
1279
2658
1280
2659
global mandos_dbus_service
1281
2660
mandos_dbus_service = None
1282
2661
1283
tcp_server = MandosServer((server_settings[u"address"],
1284
server_settings[u"port"]),
1285
ClientHandler,
1286
interface=server_settings[u"interface"],
1287
use_ipv6=use_ipv6,
1288
gnutls_priority=
1289
server_settings[u"priority"],
1290
use_dbus=use_dbus)
1291
pidfilename = u"/var/run/mandos.pid"
1292
try:
1293
pidfile = open(pidfilename, u"w")
1294
except IOError:
1295
logger.error(u"Could not open file %r", pidfilename)
2662
socketfd = None
2663
if server_settings["socket"] != "":
2664
socketfd = server_settings["socket"]
2665
tcp_server = MandosServer(
2666
(server_settings["address"], server_settings["port"]),
2667
ClientHandler,
2668
interface=(server_settings["interface"] or None),
2669
use_ipv6=use_ipv6,
2670
gnutls_priority=server_settings["priority"],
2671
use_dbus=use_dbus,
2672
socketfd=socketfd)
2673
if not foreground:
2674
pidfilename = "/run/mandos.pid"
2675
if not os.path.isdir("/run/."):
2676
pidfilename = "/var/run/mandos.pid"
2677
pidfile = None
2678
try:
2679
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2680
except IOError as e:
2681
logger.error("Could not open file %r", pidfilename,
2682
exc_info=e)
1296
2683
1297
try:
1298
uid = pwd.getpwnam(u"_mandos").pw_uid
1299
gid = pwd.getpwnam(u"_mandos").pw_gid
1300
except KeyError:
2684
for name in ("_mandos", "mandos", "nobody"):
1301
2685
try:
1302
uid = pwd.getpwnam(u"mandos").pw_uid
1303
gid = pwd.getpwnam(u"mandos").pw_gid
2686
uid = pwd.getpwnam(name).pw_uid
2687
gid = pwd.getpwnam(name).pw_gid
2688
break
1304
2689
except KeyError:
1305
try:
1306
uid = pwd.getpwnam(u"nobody").pw_uid
1307
gid = pwd.getpwnam(u"nobody").pw_gid
1308
except KeyError:
1309
uid = 65534
1310
gid = 65534
2690
continue
2691
else:
2692
uid = 65534
2693
gid = 65534
1311
2694
try:
1312
2695
os.setgid(gid)
1313
2696
os.setuid(uid)
1314
except OSError, error:
1315
if error[0] != errno.EPERM:
1316
raise error
2697
except OSError as error:
2698
if error.errno != errno.EPERM:
2699
raise
1317
2700
1318
# Enable all possible GnuTLS debugging
1319
2701
if debug:
2702
# Enable all possible GnuTLS debugging
2703
1320
2704
# "Use a log level over 10 to enable all debugging options."
1321
2705
# - GnuTLS manual
1322
2706
gnutls.library.functions.gnutls_global_set_log_level(11)
1323
2707
1324
2708
@gnutls.library.types.gnutls_log_func
1325
2709
def debug_gnutls(level, string):
1326
logger.debug(u"GnuTLS: %s", string[:-1])
1327
1328
(gnutls.library.functions
1329
.gnutls_global_set_log_function(debug_gnutls))
2710
logger.debug("GnuTLS: %s", string[:-1])
2711
2712
gnutls.library.functions.gnutls_global_set_log_function(
2713
debug_gnutls)
2714
2715
# Redirect stdin so all checkers get /dev/null
2716
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2717
os.dup2(null, sys.stdin.fileno())
2718
if null > 2:
2719
os.close(null)
2720
2721
# Need to fork before connecting to D-Bus
2722
if not foreground:
2723
# Close all input and output, do double fork, etc.
2724
daemon()
2725
2726
# multiprocessing will use threads, so before we use gobject we
2727
# need to inform gobject that threads will be used.
2728
gobject.threads_init()
1330
2729
1331
2730
global main_loop
1332
2731
# From the Avahi example code
1333
DBusGMainLoop(set_as_default=True )
2732
DBusGMainLoop(set_as_default=True)
1334
2733
main_loop = gobject.MainLoop()
1335
2734
bus = dbus.SystemBus()
1336
2735
# End of Avahi example code
1337
2736
if use_dbus:
1338
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1339
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1340
service = AvahiService(name = server_settings[u"servicename"],
1341
servicetype = u"_mandos._tcp",
1342
protocol = protocol, bus = bus)
1343
if server_settings["interface"]:
1344
service.interface = (if_nametoindex
1345
(str(server_settings[u"interface"])))
2737
try:
2738
bus_name = dbus.service.BusName("se.recompile.Mandos",
2739
bus,
2740
do_not_queue=True)
2741
old_bus_name = dbus.service.BusName(
2742
"se.bsnet.fukt.Mandos", bus,
2743
do_not_queue=True)
2744
except dbus.exceptions.DBusException as e:
2745
logger.error("Disabling D-Bus:", exc_info=e)
2746
use_dbus = False
2747
server_settings["use_dbus"] = False
2748
tcp_server.use_dbus = False
2749
if zeroconf:
2750
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2751
service = AvahiServiceToSyslog(
2752
name = server_settings["servicename"],
2753
servicetype = "_mandos._tcp",
2754
protocol = protocol,
2755
bus = bus)
2756
if server_settings["interface"]:
2757
service.interface = if_nametoindex(
2758
server_settings["interface"].encode("utf-8"))
2759
2760
global multiprocessing_manager
2761
multiprocessing_manager = multiprocessing.Manager()
1346
2762
1347
2763
client_class = Client
1348
2764
if use_dbus:
1349
2765
client_class = functools.partial(ClientDBus, bus = bus)
1350
tcp_server.clients.update(set(
1351
client_class(name = section,
1352
config= dict(client_config.items(section)))
1353
for section in client_config.sections()))
2766
2767
client_settings = Client.config_parser(client_config)
2768
old_client_settings = {}
2769
clients_data = {}
2770
2771
# This is used to redirect stdout and stderr for checker processes
2772
global wnull
2773
wnull = open(os.devnull, "w") # A writable /dev/null
2774
# Only used if server is running in foreground but not in debug
2775
# mode
2776
if debug or not foreground:
2777
wnull.close()
2778
2779
# Get client data and settings from last running state.
2780
if server_settings["restore"]:
2781
try:
2782
with open(stored_state_path, "rb") as stored_state:
2783
clients_data, old_client_settings = pickle.load(
2784
stored_state)
2785
os.remove(stored_state_path)
2786
except IOError as e:
2787
if e.errno == errno.ENOENT:
2788
logger.warning("Could not load persistent state:"
2789
" {}".format(os.strerror(e.errno)))
2790
else:
2791
logger.critical("Could not load persistent state:",
2792
exc_info=e)
2793
raise
2794
except EOFError as e:
2795
logger.warning("Could not load persistent state: "
2796
"EOFError:",
2797
exc_info=e)
2798
2799
with PGPEngine() as pgp:
2800
for client_name, client in clients_data.items():
2801
# Skip removed clients
2802
if client_name not in client_settings:
2803
continue
2804
2805
# Decide which value to use after restoring saved state.
2806
# We have three different values: Old config file,
2807
# new config file, and saved state.
2808
# New config value takes precedence if it differs from old
2809
# config value, otherwise use saved state.
2810
for name, value in client_settings[client_name].items():
2811
try:
2812
# For each value in new config, check if it
2813
# differs from the old config value (Except for
2814
# the "secret" attribute)
2815
if (name != "secret"
2816
and (value !=
2817
old_client_settings[client_name][name])):
2818
client[name] = value
2819
except KeyError:
2820
pass
2821
2822
# Clients who has passed its expire date can still be
2823
# enabled if its last checker was successful. A Client
2824
# whose checker succeeded before we stored its state is
2825
# assumed to have successfully run all checkers during
2826
# downtime.
2827
if client["enabled"]:
2828
if datetime.datetime.utcnow() >= client["expires"]:
2829
if not client["last_checked_ok"]:
2830
logger.warning(
2831
"disabling client {} - Client never "
2832
"performed a successful checker".format(
2833
client_name))
2834
client["enabled"] = False
2835
elif client["last_checker_status"] != 0:
2836
logger.warning(
2837
"disabling client {} - Client last"
2838
" checker failed with error code"
2839
" {}".format(
2840
client_name,
2841
client["last_checker_status"]))
2842
client["enabled"] = False
2843
else:
2844
client["expires"] = (
2845
datetime.datetime.utcnow()
2846
+ client["timeout"])
2847
logger.debug("Last checker succeeded,"
2848
" keeping {} enabled".format(
2849
client_name))
2850
try:
2851
client["secret"] = pgp.decrypt(
2852
client["encrypted_secret"],
2853
client_settings[client_name]["secret"])
2854
except PGPError:
2855
# If decryption fails, we use secret from new settings
2856
logger.debug("Failed to decrypt {} old secret".format(
2857
client_name))
2858
client["secret"] = (client_settings[client_name]
2859
["secret"])
2860
2861
# Add/remove clients based on new changes made to config
2862
for client_name in (set(old_client_settings)
2863
- set(client_settings)):
2864
del clients_data[client_name]
2865
for client_name in (set(client_settings)
2866
- set(old_client_settings)):
2867
clients_data[client_name] = client_settings[client_name]
2868
2869
# Create all client objects
2870
for client_name, client in clients_data.items():
2871
tcp_server.clients[client_name] = client_class(
2872
name = client_name,
2873
settings = client,
2874
server_settings = server_settings)
2875
1354
2876
if not tcp_server.clients:
1355
logger.warning(u"No clients defined")
1356
1357
if debug:
1358
# Redirect stdin so all checkers get /dev/null
1359
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1360
os.dup2(null, sys.stdin.fileno())
1361
if null > 2:
1362
os.close(null)
1363
else:
1364
# No console logging
1365
logger.removeHandler(console)
1366
# Close all input and output, do double fork, etc.
1367
daemon()
1368
1369
try:
1370
with closing(pidfile):
2877
logger.warning("No clients defined")
2878
2879
if not foreground:
2880
if pidfile is not None:
1371
2881
pid = os.getpid()
1372
pidfile.write(str(pid) + "\n")
2882
try:
2883
with pidfile:
2884
print(pid, file=pidfile)
2885
except IOError:
2886
logger.error("Could not write to file %r with PID %d",
2887
pidfilename, pid)
1373
2888
del pidfile
1374
except IOError:
1375
logger.error(u"Could not write to file %r with PID %d",
1376
pidfilename, pid)
1377
except NameError:
1378
# "pidfile" was never created
1379
pass
1380
del pidfilename
1381
1382
def cleanup():
1383
"Cleanup function; run on exit"
1384
service.cleanup()
1385
1386
while tcp_server.clients:
1387
client = tcp_server.clients.pop()
1388
client.disable_hook = None
1389
client.disable()
1390
1391
atexit.register(cleanup)
1392
1393
if not debug:
1394
signal.signal(signal.SIGINT, signal.SIG_IGN)
2889
del pidfilename
2890
1395
2891
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1396
2892
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1397
2893
1398
2894
if use_dbus:
1399
class MandosDBusService(dbus.service.Object):
2895
2896
@alternate_dbus_interfaces(
2897
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2898
class MandosDBusService(DBusObjectWithObjectManager):
1400
2899
"""A D-Bus proxy object"""
2900
1401
2901
def __init__(self):
1402
dbus.service.Object.__init__(self, bus, u"/")
1403
_interface = u"se.bsnet.fukt.Mandos"
1404
1405
@dbus.service.signal(_interface, signature=u"oa{sv}")
1406
def ClientAdded(self, objpath, properties):
1407
"D-Bus signal"
1408
pass
1409
1410
@dbus.service.signal(_interface, signature=u"s")
1411
def ClientNotFound(self, fingerprint):
1412
"D-Bus signal"
1413
pass
1414
1415
@dbus.service.signal(_interface, signature=u"os")
2902
dbus.service.Object.__init__(self, bus, "/")
2903
2904
_interface = "se.recompile.Mandos"
2905
2906
@dbus.service.signal(_interface, signature="o")
2907
def ClientAdded(self, objpath):
2908
"D-Bus signal"
2909
pass
2910
2911
@dbus.service.signal(_interface, signature="ss")
2912
def ClientNotFound(self, fingerprint, address):
2913
"D-Bus signal"
2914
pass
2915
2916
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2917
"true"})
2918
@dbus.service.signal(_interface, signature="os")
1416
2919
def ClientRemoved(self, objpath, name):
1417
2920
"D-Bus signal"
1418
2921
pass
1419
2922
1420
@dbus.service.method(_interface, out_signature=u"ao")
2923
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2924
"true"})
2925
@dbus.service.method(_interface, out_signature="ao")
1421
2926
def GetAllClients(self):
1422
2927
"D-Bus method"
1423
return dbus.Array(c.dbus_object_path
1424
for c in tcp_server.clients)
2928
return dbus.Array(c.dbus_object_path for c in
2929
tcp_server.clients.itervalues())
1425
2930
2931
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2932
"true"})
1426
2933
@dbus.service.method(_interface,
1427
out_signature=u"a{oa{sv}}")
2934
out_signature="a{oa{sv}}")
1428
2935
def GetAllClientsWithProperties(self):
1429
2936
"D-Bus method"
1430
2937
return dbus.Dictionary(
1431
((c.dbus_object_path, c.GetAllProperties())
1432
for c in tcp_server.clients),
1433
signature=u"oa{sv}")
2938
{ c.dbus_object_path: c.GetAll(
2939
"se.recompile.Mandos.Client")
2940
for c in tcp_server.clients.itervalues() },
2941
signature="oa{sv}")
1434
2942
1435
@dbus.service.method(_interface, in_signature=u"o")
2943
@dbus.service.method(_interface, in_signature="o")
1436
2944
def RemoveClient(self, object_path):
1437
2945
"D-Bus method"
1438
for c in tcp_server.clients:
2946
for c in tcp_server.clients.itervalues():
1439
2947
if c.dbus_object_path == object_path:
1440
tcp_server.clients.remove(c)
2948
del tcp_server.clients[c.name]
1441
2949
c.remove_from_connection()
1442
# Don't signal anything except ClientRemoved
1443
c.disable(signal=False)
1444
# Emit D-Bus signal
1445
self.ClientRemoved(object_path, c.name)
2950
# Don't signal the disabling
2951
c.disable(quiet=True)
2952
# Emit D-Bus signal for removal
2953
self.client_removed_signal(c)
1446
2954
return
1447
raise KeyError
2955
raise KeyError(object_path)
1448
2956
1449
2957
del _interface
2958
2959
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
2960
out_signature = "a{oa{sa{sv}}}")
2961
def GetManagedObjects(self):
2962
"""D-Bus method"""
2963
return dbus.Dictionary(
2964
{ client.dbus_object_path:
2965
dbus.Dictionary(
2966
{ interface: client.GetAll(interface)
2967
for interface in
2968
client._get_all_interface_names()})
2969
for client in tcp_server.clients.values()})
2970
2971
def client_added_signal(self, client):
2972
"""Send the new standard signal and the old signal"""
2973
if use_dbus:
2974
# New standard signal
2975
self.InterfacesAdded(
2976
client.dbus_object_path,
2977
dbus.Dictionary(
2978
{ interface: client.GetAll(interface)
2979
for interface in
2980
client._get_all_interface_names()}))
2981
# Old signal
2982
self.ClientAdded(client.dbus_object_path)
2983
2984
def client_removed_signal(self, client):
2985
"""Send the new standard signal and the old signal"""
2986
if use_dbus:
2987
# New standard signal
2988
self.InterfacesRemoved(
2989
client.dbus_object_path,
2990
client._get_all_interface_names())
2991
# Old signal
2992
self.ClientRemoved(client.dbus_object_path,
2993
client.name)
1450
2994
1451
2995
mandos_dbus_service = MandosDBusService()
1452
2996
1453
for client in tcp_server.clients:
2997
def cleanup():
2998
"Cleanup function; run on exit"
2999
if zeroconf:
3000
service.cleanup()
3001
3002
multiprocessing.active_children()
3003
wnull.close()
3004
if not (tcp_server.clients or client_settings):
3005
return
3006
3007
# Store client before exiting. Secrets are encrypted with key
3008
# based on what config file has. If config file is
3009
# removed/edited, old secret will thus be unrecovable.
3010
clients = {}
3011
with PGPEngine() as pgp:
3012
for client in tcp_server.clients.itervalues():
3013
key = client_settings[client.name]["secret"]
3014
client.encrypted_secret = pgp.encrypt(client.secret,
3015
key)
3016
client_dict = {}
3017
3018
# A list of attributes that can not be pickled
3019
# + secret.
3020
exclude = { "bus", "changedstate", "secret",
3021
"checker", "server_settings" }
3022
for name, typ in inspect.getmembers(dbus.service
3023
.Object):
3024
exclude.add(name)
3025
3026
client_dict["encrypted_secret"] = (client
3027
.encrypted_secret)
3028
for attr in client.client_structure:
3029
if attr not in exclude:
3030
client_dict[attr] = getattr(client, attr)
3031
3032
clients[client.name] = client_dict
3033
del client_settings[client.name]["secret"]
3034
3035
try:
3036
with tempfile.NamedTemporaryFile(
3037
mode='wb',
3038
suffix=".pickle",
3039
prefix='clients-',
3040
dir=os.path.dirname(stored_state_path),
3041
delete=False) as stored_state:
3042
pickle.dump((clients, client_settings), stored_state)
3043
tempname = stored_state.name
3044
os.rename(tempname, stored_state_path)
3045
except (IOError, OSError) as e:
3046
if not debug:
3047
try:
3048
os.remove(tempname)
3049
except NameError:
3050
pass
3051
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3052
logger.warning("Could not save persistent state: {}"
3053
.format(os.strerror(e.errno)))
3054
else:
3055
logger.warning("Could not save persistent state:",
3056
exc_info=e)
3057
raise
3058
3059
# Delete all clients, and settings from config
3060
while tcp_server.clients:
3061
name, client = tcp_server.clients.popitem()
3062
if use_dbus:
3063
client.remove_from_connection()
3064
# Don't signal the disabling
3065
client.disable(quiet=True)
3066
# Emit D-Bus signal for removal
3067
mandos_dbus_service.client_removed_signal(client)
3068
client_settings.clear()
3069
3070
atexit.register(cleanup)
3071
3072
for client in tcp_server.clients.itervalues():
1454
3073
if use_dbus:
1455
# Emit D-Bus signal
1456
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1457
client.GetAllProperties())
1458
client.enable()
3074
# Emit D-Bus signal for adding
3075
mandos_dbus_service.client_added_signal(client)
3076
# Need to initiate checking of clients
3077
if client.enabled:
3078
client.init_checker()
1459
3079
1460
3080
tcp_server.enable()
1461
3081
tcp_server.server_activate()
1462
3082
1463
3083
# Find out what port we got
1464
service.port = tcp_server.socket.getsockname()[1]
3084
if zeroconf:
3085
service.port = tcp_server.socket.getsockname()[1]
1465
3086
if use_ipv6:
1466
logger.info(u"Now listening on address %r, port %d,"
1467
" flowinfo %d, scope_id %d"
1468
% tcp_server.socket.getsockname())
3087
logger.info("Now listening on address %r, port %d,"
3088
" flowinfo %d, scope_id %d",
3089
*tcp_server.socket.getsockname())
1469
3090
else: # IPv4
1470
logger.info(u"Now listening on address %r, port %d"
1471
% tcp_server.socket.getsockname())
3091
logger.info("Now listening on address %r, port %d",
3092
*tcp_server.socket.getsockname())
1472
3093
1473
3094
#service.interface = tcp_server.socket.getsockname()[3]
1474
3095
1475
3096
try:
1476
# From the Avahi example code
1477
try:
1478
service.activate()
1479
except dbus.exceptions.DBusException, error:
1480
logger.critical(u"DBusException: %s", error)
1481
sys.exit(1)
1482
# End of Avahi example code
3097
if zeroconf:
3098
# From the Avahi example code
3099
try:
3100
service.activate()
3101
except dbus.exceptions.DBusException as error:
3102
logger.critical("D-Bus Exception", exc_info=error)
3103
cleanup()
3104
sys.exit(1)
3105
# End of Avahi example code
1483
3106
1484
3107
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1485
3108
lambda *args, **kwargs:
1486
3109
(tcp_server.handle_request
1487
3110
(*args[2:], **kwargs) or True))
1488
3111
1489
logger.debug(u"Starting main loop")
3112
logger.debug("Starting main loop")
1490
3113
main_loop.run()
1491
except AvahiError, error:
1492
logger.critical(u"AvahiError: %s", error)
3114
except AvahiError as error:
3115
logger.critical("Avahi Error", exc_info=error)
3116
cleanup()
1493
3117
sys.exit(1)
1494
3118
except KeyboardInterrupt:
1495
3119
if debug:
1496
print >> sys.stderr
1497
logger.debug(u"Server received KeyboardInterrupt")
1498
logger.debug(u"Server exiting")
3120
print("", file=sys.stderr)
3121
logger.debug("Server received KeyboardInterrupt")
3122
logger.debug("Server exiting")
3123
# Must run before the D-Bus bus name gets deregistered
3124
cleanup()
3125
1499
3126
1500
3127
if __name__ == '__main__':
1501
3128
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0