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- Committer: Teddy Hogeborn
- Date: 2012-05-26 22:56:38 UTC
- mfrom: (589.1.1 socket-option)
- Revision ID: teddy@recompile.se-20120526225638-4hvqyrvmj0036lfn
Merge "--socket" option for server.
This is suggested by the GNU Coding Standards' Table of Long Options,
and will probably also allow socket activation (e.g. by systemd(8)).
This is suggested by the GNU Coding Standards' Table of Long Options,
and will probably also allow socket activation (e.g. by systemd(8)).
- files added:
- DBUS-API
- debian/source
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
# methods "add" and "remove" in the "AvahiService" class, the
10
# "server_state_changed" and "entry_group_state_changed" functions,
11
# and some lines in "main".
9
# methods "add", "remove", "server_state_changed",
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 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
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
from future_builtins import *
38
39
import SocketServer as socketserver
37
40
import socket
38
import optparse
41
import argparse
39
42
import datetime
40
43
import errno
41
44
import gnutls.crypto
44
47
import gnutls.library.functions
45
48
import gnutls.library.constants
46
49
import gnutls.library.types
47
import ConfigParser
50
import ConfigParser as configparser
48
51
import sys
49
52
import re
50
53
import os
51
54
import signal
52
from sets import Set
53
55
import subprocess
54
56
import atexit
55
57
import stat
56
58
import logging
57
59
import logging.handlers
58
60
import pwd
59
from contextlib import closing
61
import contextlib
60
62
import struct
61
63
import fcntl
64
import functools
65
import cPickle as pickle
66
import multiprocessing
67
import types
68
import binascii
69
import tempfile
70
import itertools
62
71
63
72
import dbus
64
73
import dbus.service
67
76
from dbus.mainloop.glib import DBusGMainLoop
68
77
import ctypes
69
78
import ctypes.util
79
import xml.dom.minidom
80
import inspect
81
import GnuPGInterface
70
82
71
83
try:
72
84
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
74
86
try:
75
87
from IN import SO_BINDTODEVICE
76
88
except ImportError:
77
# From /usr/include/asm/socket.h
78
SO_BINDTODEVICE = 25
79
80
81
version = "1.0.8"
82
83
logger = logging.Logger(u'mandos')
89
SO_BINDTODEVICE = None
90
91
version = "1.5.4"
92
stored_state_file = "clients.pickle"
93
94
logger = logging.getLogger()
84
95
syslogger = (logging.handlers.SysLogHandler
85
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
86
address = "/dev/log"))
87
syslogger.setFormatter(logging.Formatter
88
(u'Mandos [%(process)d]: %(levelname)s:'
89
u' %(message)s'))
90
logger.addHandler(syslogger)
91
92
console = logging.StreamHandler()
93
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
94
u' %(levelname)s:'
95
u' %(message)s'))
96
logger.addHandler(console)
97
address = str("/dev/log")))
98
99
try:
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
103
except (OSError, AttributeError):
104
def if_nametoindex(interface):
105
"Get an interface index the hard way, i.e. using fcntl()"
106
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
107
with contextlib.closing(socket.socket()) as s:
108
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
113
return interface_index
114
115
116
def initlogger(debug, level=logging.WARNING):
117
"""init logger and add loglevel"""
118
119
syslogger.setFormatter(logging.Formatter
120
('Mandos [%(process)d]: %(levelname)s:'
121
' %(message)s'))
122
logger.addHandler(syslogger)
123
124
if debug:
125
console = logging.StreamHandler()
126
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
127
' [%(process)d]:'
128
' %(levelname)s:'
129
' %(message)s'))
130
logger.addHandler(console)
131
logger.setLevel(level)
132
133
134
class PGPError(Exception):
135
"""Exception if encryption/decryption fails"""
136
pass
137
138
139
class PGPEngine(object):
140
"""A simple class for OpenPGP symmetric encryption & decryption"""
141
def __init__(self):
142
self.gnupg = GnuPGInterface.GnuPG()
143
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
144
self.gnupg = GnuPGInterface.GnuPG()
145
self.gnupg.options.meta_interactive = False
146
self.gnupg.options.homedir = self.tempdir
147
self.gnupg.options.extra_args.extend(['--force-mdc',
148
'--quiet',
149
'--no-use-agent'])
150
151
def __enter__(self):
152
return self
153
154
def __exit__(self, exc_type, exc_value, traceback):
155
self._cleanup()
156
return False
157
158
def __del__(self):
159
self._cleanup()
160
161
def _cleanup(self):
162
if self.tempdir is not None:
163
# Delete contents of tempdir
164
for root, dirs, files in os.walk(self.tempdir,
165
topdown = False):
166
for filename in files:
167
os.remove(os.path.join(root, filename))
168
for dirname in dirs:
169
os.rmdir(os.path.join(root, dirname))
170
# Remove tempdir
171
os.rmdir(self.tempdir)
172
self.tempdir = None
173
174
def password_encode(self, password):
175
# Passphrase can not be empty and can not contain newlines or
176
# NUL bytes. So we prefix it and hex encode it.
177
return b"mandos" + binascii.hexlify(password)
178
179
def encrypt(self, data, password):
180
self.gnupg.passphrase = self.password_encode(password)
181
with open(os.devnull, "w") as devnull:
182
try:
183
proc = self.gnupg.run(['--symmetric'],
184
create_fhs=['stdin', 'stdout'],
185
attach_fhs={'stderr': devnull})
186
with contextlib.closing(proc.handles['stdin']) as f:
187
f.write(data)
188
with contextlib.closing(proc.handles['stdout']) as f:
189
ciphertext = f.read()
190
proc.wait()
191
except IOError as e:
192
raise PGPError(e)
193
self.gnupg.passphrase = None
194
return ciphertext
195
196
def decrypt(self, data, password):
197
self.gnupg.passphrase = self.password_encode(password)
198
with open(os.devnull, "w") as devnull:
199
try:
200
proc = self.gnupg.run(['--decrypt'],
201
create_fhs=['stdin', 'stdout'],
202
attach_fhs={'stderr': devnull})
203
with contextlib.closing(proc.handles['stdin']) as f:
204
f.write(data)
205
with contextlib.closing(proc.handles['stdout']) as f:
206
decrypted_plaintext = f.read()
207
proc.wait()
208
except IOError as e:
209
raise PGPError(e)
210
self.gnupg.passphrase = None
211
return decrypted_plaintext
212
97
213
98
214
class AvahiError(Exception):
99
215
def __init__(self, value, *args, **kwargs):
115
231
Attributes:
116
232
interface: integer; avahi.IF_UNSPEC or an interface index.
117
233
Used to optionally bind to the specified interface.
118
name: string; Example: u'Mandos'
119
type: string; Example: u'_mandos._tcp'.
234
name: string; Example: 'Mandos'
235
type: string; Example: '_mandos._tcp'.
120
236
See <http://www.dns-sd.org/ServiceTypes.html>
121
237
port: integer; what port to announce
122
238
TXT: list of strings; TXT record for the service
125
241
max_renames: integer; maximum number of renames
126
242
rename_count: integer; counter so we only rename after collisions
127
243
a sensible number of times
244
group: D-Bus Entry Group
245
server: D-Bus Server
246
bus: dbus.SystemBus()
128
247
"""
248
129
249
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
130
250
servicetype = None, port = None, TXT = None,
131
domain = u"", host = u"", max_renames = 32768,
132
protocol = avahi.PROTO_UNSPEC):
251
domain = "", host = "", max_renames = 32768,
252
protocol = avahi.PROTO_UNSPEC, bus = None):
133
253
self.interface = interface
134
254
self.name = name
135
255
self.type = servicetype
140
260
self.rename_count = 0
141
261
self.max_renames = max_renames
142
262
self.protocol = protocol
263
self.group = None # our entry group
264
self.server = None
265
self.bus = bus
266
self.entry_group_state_changed_match = None
267
143
268
def rename(self):
144
269
"""Derived from the Avahi example code"""
145
270
if self.rename_count >= self.max_renames:
146
logger.critical(u"No suitable Zeroconf service name found"
147
u" after %i retries, exiting.",
271
logger.critical("No suitable Zeroconf service name found"
272
" after %i retries, exiting.",
148
273
self.rename_count)
149
raise AvahiServiceError(u"Too many renames")
150
self.name = server.GetAlternativeServiceName(self.name)
151
logger.info(u"Changing Zeroconf service name to %r ...",
274
raise AvahiServiceError("Too many renames")
275
self.name = unicode(self.server
276
.GetAlternativeServiceName(self.name))
277
logger.info("Changing Zeroconf service name to %r ...",
152
278
self.name)
153
syslogger.setFormatter(logging.Formatter
154
(u'Mandos (%s) [%%(process)d]:'
155
u' %%(levelname)s: %%(message)s'
156
% self.name))
157
279
self.remove()
158
self.add()
280
try:
281
self.add()
282
except dbus.exceptions.DBusException as error:
283
logger.critical("D-Bus Exception", exc_info=error)
284
self.cleanup()
285
os._exit(1)
159
286
self.rename_count += 1
287
160
288
def remove(self):
161
289
"""Derived from the Avahi example code"""
162
if group is not None:
163
group.Reset()
290
if self.entry_group_state_changed_match is not None:
291
self.entry_group_state_changed_match.remove()
292
self.entry_group_state_changed_match = None
293
if self.group is not None:
294
self.group.Reset()
295
164
296
def add(self):
165
297
"""Derived from the Avahi example code"""
166
global group
167
if group is None:
168
group = dbus.Interface(bus.get_object
169
(avahi.DBUS_NAME,
170
server.EntryGroupNew()),
171
avahi.DBUS_INTERFACE_ENTRY_GROUP)
172
group.connect_to_signal('StateChanged',
173
entry_group_state_changed)
174
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
175
service.name, service.type)
176
group.AddService(
177
self.interface, # interface
178
self.protocol, # protocol
179
dbus.UInt32(0), # flags
180
self.name, self.type,
181
self.domain, self.host,
182
dbus.UInt16(self.port),
183
avahi.string_array_to_txt_array(self.TXT))
184
group.Commit()
185
186
# From the Avahi example code:
187
group = None # our entry group
188
# End of Avahi example code
189
190
191
def _datetime_to_dbus(dt, variant_level=0):
192
"""Convert a UTC datetime.datetime() to a D-Bus type."""
193
return dbus.String(dt.isoformat(), variant_level=variant_level)
298
self.remove()
299
if self.group is None:
300
self.group = dbus.Interface(
301
self.bus.get_object(avahi.DBUS_NAME,
302
self.server.EntryGroupNew()),
303
avahi.DBUS_INTERFACE_ENTRY_GROUP)
304
self.entry_group_state_changed_match = (
305
self.group.connect_to_signal(
306
'StateChanged', self.entry_group_state_changed))
307
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
308
self.name, self.type)
309
self.group.AddService(
310
self.interface,
311
self.protocol,
312
dbus.UInt32(0), # flags
313
self.name, self.type,
314
self.domain, self.host,
315
dbus.UInt16(self.port),
316
avahi.string_array_to_txt_array(self.TXT))
317
self.group.Commit()
318
319
def entry_group_state_changed(self, state, error):
320
"""Derived from the Avahi example code"""
321
logger.debug("Avahi entry group state change: %i", state)
322
323
if state == avahi.ENTRY_GROUP_ESTABLISHED:
324
logger.debug("Zeroconf service established.")
325
elif state == avahi.ENTRY_GROUP_COLLISION:
326
logger.info("Zeroconf service name collision.")
327
self.rename()
328
elif state == avahi.ENTRY_GROUP_FAILURE:
329
logger.critical("Avahi: Error in group state changed %s",
330
unicode(error))
331
raise AvahiGroupError("State changed: {0!s}"
332
.format(error))
333
334
def cleanup(self):
335
"""Derived from the Avahi example code"""
336
if self.group is not None:
337
try:
338
self.group.Free()
339
except (dbus.exceptions.UnknownMethodException,
340
dbus.exceptions.DBusException):
341
pass
342
self.group = None
343
self.remove()
344
345
def server_state_changed(self, state, error=None):
346
"""Derived from the Avahi example code"""
347
logger.debug("Avahi server state change: %i", state)
348
bad_states = { avahi.SERVER_INVALID:
349
"Zeroconf server invalid",
350
avahi.SERVER_REGISTERING: None,
351
avahi.SERVER_COLLISION:
352
"Zeroconf server name collision",
353
avahi.SERVER_FAILURE:
354
"Zeroconf server failure" }
355
if state in bad_states:
356
if bad_states[state] is not None:
357
if error is None:
358
logger.error(bad_states[state])
359
else:
360
logger.error(bad_states[state] + ": %r", error)
361
self.cleanup()
362
elif state == avahi.SERVER_RUNNING:
363
self.add()
364
else:
365
if error is None:
366
logger.debug("Unknown state: %r", state)
367
else:
368
logger.debug("Unknown state: %r: %r", state, error)
369
370
def activate(self):
371
"""Derived from the Avahi example code"""
372
if self.server is None:
373
self.server = dbus.Interface(
374
self.bus.get_object(avahi.DBUS_NAME,
375
avahi.DBUS_PATH_SERVER,
376
follow_name_owner_changes=True),
377
avahi.DBUS_INTERFACE_SERVER)
378
self.server.connect_to_signal("StateChanged",
379
self.server_state_changed)
380
self.server_state_changed(self.server.GetState())
381
382
383
class AvahiServiceToSyslog(AvahiService):
384
def rename(self):
385
"""Add the new name to the syslog messages"""
386
ret = AvahiService.rename(self)
387
syslogger.setFormatter(logging.Formatter
388
('Mandos ({0}) [%(process)d]:'
389
' %(levelname)s: %(message)s'
390
.format(self.name)))
391
return ret
392
393
394
def timedelta_to_milliseconds(td):
395
"Convert a datetime.timedelta() to milliseconds"
396
return ((td.days * 24 * 60 * 60 * 1000)
397
+ (td.seconds * 1000)
398
+ (td.microseconds // 1000))
194
399
195
400
196
401
class Client(object):
197
402
"""A representation of a client host served by this server.
198
403
199
404
Attributes:
200
name: string; from the config file, used in log messages and
201
D-Bus identifiers
202
fingerprint: string (40 or 32 hexadecimal digits); used to
203
uniquely identify the client
204
secret: bytestring; sent verbatim (over TLS) to client
205
host: string; available for use by the checker command
206
created: datetime.datetime(); (UTC) object creation
207
last_enabled: datetime.datetime(); (UTC)
208
enabled: bool()
209
last_checked_ok: datetime.datetime(); (UTC) or None
210
timeout: datetime.timedelta(); How long from last_checked_ok
211
until this client is invalid
212
interval: datetime.timedelta(); How often to start a new checker
213
disable_hook: If set, called by disable() as disable_hook(self)
405
approved: bool(); 'None' if not yet approved/disapproved
406
approval_delay: datetime.timedelta(); Time to wait for approval
407
approval_duration: datetime.timedelta(); Duration of one approval
214
408
checker: subprocess.Popen(); a running checker process used
215
409
to see if the client lives.
216
410
'None' if no process is running.
217
checker_initiator_tag: a gobject event source tag, or None
218
disable_initiator_tag: - '' -
219
checker_callback_tag: - '' -
220
checker_command: string; External command which is run to check if
221
client lives. %() expansions are done at
411
checker_callback_tag: a gobject event source tag, or None
412
checker_command: string; External command which is run to check
413
if client lives. %() expansions are done at
222
414
runtime with vars(self) as dict, so that for
223
415
instance %(name)s can be used in the command.
416
checker_initiator_tag: a gobject event source tag, or None
417
created: datetime.datetime(); (UTC) object creation
418
client_structure: Object describing what attributes a client has
419
and is used for storing the client at exit
224
420
current_checker_command: string; current running checker_command
421
disable_initiator_tag: a gobject event source tag, or None
422
enabled: bool()
423
fingerprint: string (40 or 32 hexadecimal digits); used to
424
uniquely identify the client
425
host: string; available for use by the checker command
426
interval: datetime.timedelta(); How often to start a new checker
427
last_approval_request: datetime.datetime(); (UTC) or None
428
last_checked_ok: datetime.datetime(); (UTC) or None
429
last_checker_status: integer between 0 and 255 reflecting exit
430
status of last checker. -1 reflects crashed
431
checker, -2 means no checker completed yet.
432
last_enabled: datetime.datetime(); (UTC) or None
433
name: string; from the config file, used in log messages and
434
D-Bus identifiers
435
secret: bytestring; sent verbatim (over TLS) to client
436
timeout: datetime.timedelta(); How long from last_checked_ok
437
until this client is disabled
438
extended_timeout: extra long timeout when secret has been sent
439
runtime_expansions: Allowed attributes for runtime expansion.
440
expires: datetime.datetime(); time (UTC) when a client will be
441
disabled, or None
225
442
"""
226
443
227
@staticmethod
228
def _datetime_to_milliseconds(dt):
229
"Convert a datetime.datetime() to milliseconds"
230
return ((dt.days * 24 * 60 * 60 * 1000)
231
+ (dt.seconds * 1000)
232
+ (dt.microseconds // 1000))
444
runtime_expansions = ("approval_delay", "approval_duration",
445
"created", "enabled", "expires",
446
"fingerprint", "host", "interval",
447
"last_approval_request", "last_checked_ok",
448
"last_enabled", "name", "timeout")
449
client_defaults = { "timeout": "5m",
450
"extended_timeout": "15m",
451
"interval": "2m",
452
"checker": "fping -q -- %%(host)s",
453
"host": "",
454
"approval_delay": "0s",
455
"approval_duration": "1s",
456
"approved_by_default": "True",
457
"enabled": "True",
458
}
233
459
234
460
def timeout_milliseconds(self):
235
461
"Return the 'timeout' attribute in milliseconds"
236
return self._datetime_to_milliseconds(self.timeout)
462
return timedelta_to_milliseconds(self.timeout)
463
464
def extended_timeout_milliseconds(self):
465
"Return the 'extended_timeout' attribute in milliseconds"
466
return timedelta_to_milliseconds(self.extended_timeout)
237
467
238
468
def interval_milliseconds(self):
239
469
"Return the 'interval' attribute in milliseconds"
240
return self._datetime_to_milliseconds(self.interval)
241
242
def __init__(self, name = None, disable_hook=None, config=None):
243
"""Note: the 'checker' key in 'config' sets the
244
'checker_command' attribute and *not* the 'checker'
245
attribute."""
470
return timedelta_to_milliseconds(self.interval)
471
472
def approval_delay_milliseconds(self):
473
return timedelta_to_milliseconds(self.approval_delay)
474
475
@staticmethod
476
def config_parser(config):
477
"""Construct a new dict of client settings of this form:
478
{ client_name: {setting_name: value, ...}, ...}
479
with exceptions for any special settings as defined above.
480
NOTE: Must be a pure function. Must return the same result
481
value given the same arguments.
482
"""
483
settings = {}
484
for client_name in config.sections():
485
section = dict(config.items(client_name))
486
client = settings[client_name] = {}
487
488
client["host"] = section["host"]
489
# Reformat values from string types to Python types
490
client["approved_by_default"] = config.getboolean(
491
client_name, "approved_by_default")
492
client["enabled"] = config.getboolean(client_name,
493
"enabled")
494
495
client["fingerprint"] = (section["fingerprint"].upper()
496
.replace(" ", ""))
497
if "secret" in section:
498
client["secret"] = section["secret"].decode("base64")
499
elif "secfile" in section:
500
with open(os.path.expanduser(os.path.expandvars
501
(section["secfile"])),
502
"rb") as secfile:
503
client["secret"] = secfile.read()
504
else:
505
raise TypeError("No secret or secfile for section {0}"
506
.format(section))
507
client["timeout"] = string_to_delta(section["timeout"])
508
client["extended_timeout"] = string_to_delta(
509
section["extended_timeout"])
510
client["interval"] = string_to_delta(section["interval"])
511
client["approval_delay"] = string_to_delta(
512
section["approval_delay"])
513
client["approval_duration"] = string_to_delta(
514
section["approval_duration"])
515
client["checker_command"] = section["checker"]
516
client["last_approval_request"] = None
517
client["last_checked_ok"] = None
518
client["last_checker_status"] = -2
519
520
return settings
521
522
def __init__(self, settings, name = None):
246
523
self.name = name
247
if config is None:
248
config = {}
249
logger.debug(u"Creating client %r", self.name)
524
# adding all client settings
525
for setting, value in settings.iteritems():
526
setattr(self, setting, value)
527
528
if self.enabled:
529
if not hasattr(self, "last_enabled"):
530
self.last_enabled = datetime.datetime.utcnow()
531
if not hasattr(self, "expires"):
532
self.expires = (datetime.datetime.utcnow()
533
+ self.timeout)
534
else:
535
self.last_enabled = None
536
self.expires = None
537
538
logger.debug("Creating client %r", self.name)
250
539
# Uppercase and remove spaces from fingerprint for later
251
540
# comparison purposes with return value from the fingerprint()
252
541
# function
253
self.fingerprint = (config[u"fingerprint"].upper()
254
.replace(u" ", u""))
255
logger.debug(u" Fingerprint: %s", self.fingerprint)
256
if u"secret" in config:
257
self.secret = config[u"secret"].decode(u"base64")
258
elif u"secfile" in config:
259
with closing(open(os.path.expanduser
260
(os.path.expandvars
261
(config[u"secfile"])))) as secfile:
262
self.secret = secfile.read()
263
else:
264
raise TypeError(u"No secret or secfile for client %s"
265
% self.name)
266
self.host = config.get(u"host", u"")
267
self.created = datetime.datetime.utcnow()
268
self.enabled = False
269
self.last_enabled = None
270
self.last_checked_ok = None
271
self.timeout = string_to_delta(config[u"timeout"])
272
self.interval = string_to_delta(config[u"interval"])
273
self.disable_hook = disable_hook
542
logger.debug(" Fingerprint: %s", self.fingerprint)
543
self.created = settings.get("created",
544
datetime.datetime.utcnow())
545
546
# attributes specific for this server instance
274
547
self.checker = None
275
548
self.checker_initiator_tag = None
276
549
self.disable_initiator_tag = None
277
550
self.checker_callback_tag = None
278
self.checker_command = config[u"checker"]
279
551
self.current_checker_command = None
280
self.last_connect = None
552
self.approved = None
553
self.approvals_pending = 0
554
self.changedstate = (multiprocessing_manager
555
.Condition(multiprocessing_manager
556
.Lock()))
557
self.client_structure = [attr for attr in
558
self.__dict__.iterkeys()
559
if not attr.startswith("_")]
560
self.client_structure.append("client_structure")
561
562
for name, t in inspect.getmembers(type(self),
563
lambda obj:
564
isinstance(obj,
565
property)):
566
if not name.startswith("_"):
567
self.client_structure.append(name)
568
569
# Send notice to process children that client state has changed
570
def send_changedstate(self):
571
with self.changedstate:
572
self.changedstate.notify_all()
281
573
282
574
def enable(self):
283
575
"""Start this client's checker and timeout hooks"""
576
if getattr(self, "enabled", False):
577
# Already enabled
578
return
579
self.expires = datetime.datetime.utcnow() + self.timeout
580
self.enabled = True
284
581
self.last_enabled = datetime.datetime.utcnow()
582
self.init_checker()
583
self.send_changedstate()
584
585
def disable(self, quiet=True):
586
"""Disable this client."""
587
if not getattr(self, "enabled", False):
588
return False
589
if not quiet:
590
logger.info("Disabling client %s", self.name)
591
if getattr(self, "disable_initiator_tag", None) is not None:
592
gobject.source_remove(self.disable_initiator_tag)
593
self.disable_initiator_tag = None
594
self.expires = None
595
if getattr(self, "checker_initiator_tag", None) is not None:
596
gobject.source_remove(self.checker_initiator_tag)
597
self.checker_initiator_tag = None
598
self.stop_checker()
599
self.enabled = False
600
if not quiet:
601
self.send_changedstate()
602
# Do not run this again if called by a gobject.timeout_add
603
return False
604
605
def __del__(self):
606
self.disable()
607
608
def init_checker(self):
285
609
# Schedule a new checker to be started an 'interval' from now,
286
610
# and every interval from then on.
611
if self.checker_initiator_tag is not None:
612
gobject.source_remove(self.checker_initiator_tag)
287
613
self.checker_initiator_tag = (gobject.timeout_add
288
614
(self.interval_milliseconds(),
289
615
self.start_checker))
290
# Also start a new checker *right now*.
291
self.start_checker()
292
616
# Schedule a disable() when 'timeout' has passed
617
if self.disable_initiator_tag is not None:
618
gobject.source_remove(self.disable_initiator_tag)
293
619
self.disable_initiator_tag = (gobject.timeout_add
294
620
(self.timeout_milliseconds(),
295
621
self.disable))
296
self.enabled = True
297
298
def disable(self):
299
"""Disable this client."""
300
if not getattr(self, "enabled", False):
301
return False
302
logger.info(u"Disabling client %s", self.name)
303
if getattr(self, u"disable_initiator_tag", False):
304
gobject.source_remove(self.disable_initiator_tag)
305
self.disable_initiator_tag = None
306
if getattr(self, u"checker_initiator_tag", False):
307
gobject.source_remove(self.checker_initiator_tag)
308
self.checker_initiator_tag = None
309
self.stop_checker()
310
if self.disable_hook:
311
self.disable_hook(self)
312
self.enabled = False
313
# Do not run this again if called by a gobject.timeout_add
314
return False
315
316
def __del__(self):
317
self.disable_hook = None
318
self.disable()
622
# Also start a new checker *right now*.
623
self.start_checker()
319
624
320
625
def checker_callback(self, pid, condition, command):
321
626
"""The checker has completed, so take appropriate actions."""
322
627
self.checker_callback_tag = None
323
628
self.checker = None
324
629
if os.WIFEXITED(condition):
325
exitstatus = os.WEXITSTATUS(condition)
326
if exitstatus == 0:
327
logger.info(u"Checker for %(name)s succeeded",
630
self.last_checker_status = os.WEXITSTATUS(condition)
631
if self.last_checker_status == 0:
632
logger.info("Checker for %(name)s succeeded",
328
633
vars(self))
329
634
self.checked_ok()
330
635
else:
331
logger.info(u"Checker for %(name)s failed",
636
logger.info("Checker for %(name)s failed",
332
637
vars(self))
333
638
else:
334
logger.warning(u"Checker for %(name)s crashed?",
639
self.last_checker_status = -1
640
logger.warning("Checker for %(name)s crashed?",
335
641
vars(self))
336
642
337
643
def checked_ok(self):
338
"""Bump up the timeout for this client.
339
340
This should only be called when the client has been seen,
341
alive and well.
342
"""
644
"""Assert that the client has been seen, alive and well."""
343
645
self.last_checked_ok = datetime.datetime.utcnow()
344
gobject.source_remove(self.disable_initiator_tag)
345
self.disable_initiator_tag = (gobject.timeout_add
346
(self.timeout_milliseconds(),
347
self.disable))
646
self.last_checker_status = 0
647
self.bump_timeout()
648
649
def bump_timeout(self, timeout=None):
650
"""Bump up the timeout for this client."""
651
if timeout is None:
652
timeout = self.timeout
653
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
655
self.disable_initiator_tag = None
656
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(timedelta_to_milliseconds
659
(timeout), self.disable))
660
self.expires = datetime.datetime.utcnow() + timeout
661
662
def need_approval(self):
663
self.last_approval_request = datetime.datetime.utcnow()
348
664
349
665
def start_checker(self):
350
666
"""Start a new checker subprocess if one is not running.
352
668
If a checker already exists, leave it running and do
353
669
nothing."""
354
670
# The reason for not killing a running checker is that if we
355
# did that, then if a checker (for some reason) started
356
# running slowly and taking more than 'interval' time, the
357
# client would inevitably timeout, since no checker would get
358
# a chance to run to completion. If we instead leave running
671
# did that, and if a checker (for some reason) started running
672
# slowly and taking more than 'interval' time, then the client
673
# would inevitably timeout, since no checker would get a
674
# chance to run to completion. If we instead leave running
359
675
# checkers alone, the checker would have to take more time
360
# than 'timeout' for the client to be declared invalid, which
361
# is as it should be.
676
# than 'timeout' for the client to be disabled, which is as it
677
# should be.
362
678
363
679
# If a checker exists, make sure it is not a zombie
364
if self.checker is not None:
680
try:
365
681
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
682
except (AttributeError, OSError) as error:
683
if (isinstance(error, OSError)
684
and error.errno != errno.ECHILD):
685
raise error
686
else:
366
687
if pid:
367
logger.warning(u"Checker was a zombie")
688
logger.warning("Checker was a zombie")
368
689
gobject.source_remove(self.checker_callback_tag)
369
690
self.checker_callback(pid, status,
370
691
self.current_checker_command)
371
692
# Start a new checker if needed
372
693
if self.checker is None:
694
# Escape attributes for the shell
695
escaped_attrs = dict(
696
(attr, re.escape(unicode(getattr(self, attr))))
697
for attr in
698
self.runtime_expansions)
373
699
try:
374
# In case checker_command has exactly one % operator
375
command = self.checker_command % self.host
376
except TypeError:
377
# Escape attributes for the shell
378
escaped_attrs = dict((key,
379
re.escape(unicode(str(val),
380
errors=
381
u'replace')))
382
for key, val in
383
vars(self).iteritems())
384
try:
385
command = self.checker_command % escaped_attrs
386
except TypeError, error:
387
logger.error(u'Could not format string "%s":'
388
u' %s', self.checker_command, error)
389
return True # Try again later
700
command = self.checker_command % escaped_attrs
701
except TypeError as error:
702
logger.error('Could not format string "%s"',
703
self.checker_command, exc_info=error)
704
return True # Try again later
390
705
self.current_checker_command = command
391
706
try:
392
logger.info(u"Starting checker %r for %s",
707
logger.info("Starting checker %r for %s",
393
708
command, self.name)
394
709
# We don't need to redirect stdout and stderr, since
395
710
# in normal mode, that is already done by daemon(),
397
712
# always replaced by /dev/null.)
398
713
self.checker = subprocess.Popen(command,
399
714
close_fds=True,
400
shell=True, cwd=u"/")
401
self.checker_callback_tag = (gobject.child_watch_add
402
(self.checker.pid,
403
self.checker_callback,
404
data=command))
405
# The checker may have completed before the gobject
406
# watch was added. Check for this.
407
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
408
if pid:
409
gobject.source_remove(self.checker_callback_tag)
410
self.checker_callback(pid, status, command)
411
except OSError, error:
412
logger.error(u"Failed to start subprocess: %s",
413
error)
715
shell=True, cwd="/")
716
except OSError as error:
717
logger.error("Failed to start subprocess",
718
exc_info=error)
719
self.checker_callback_tag = (gobject.child_watch_add
720
(self.checker.pid,
721
self.checker_callback,
722
data=command))
723
# The checker may have completed before the gobject
724
# watch was added. Check for this.
725
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
726
if pid:
727
gobject.source_remove(self.checker_callback_tag)
728
self.checker_callback(pid, status, command)
414
729
# Re-run this periodically if run by gobject.timeout_add
415
730
return True
416
731
419
734
if self.checker_callback_tag:
420
735
gobject.source_remove(self.checker_callback_tag)
421
736
self.checker_callback_tag = None
422
if getattr(self, u"checker", None) is None:
737
if getattr(self, "checker", None) is None:
423
738
return
424
logger.debug(u"Stopping checker for %(name)s", vars(self))
739
logger.debug("Stopping checker for %(name)s", vars(self))
425
740
try:
426
os.kill(self.checker.pid, signal.SIGTERM)
427
#os.sleep(0.5)
741
self.checker.terminate()
742
#time.sleep(0.5)
428
743
#if self.checker.poll() is None:
429
# os.kill(self.checker.pid, signal.SIGKILL)
430
except OSError, error:
744
# self.checker.kill()
745
except OSError as error:
431
746
if error.errno != errno.ESRCH: # No such process
432
747
raise
433
748
self.checker = None
434
435
def still_valid(self):
436
"""Has the timeout not yet passed for this client?"""
437
if not getattr(self, u"enabled", False):
438
return False
439
now = datetime.datetime.utcnow()
440
if self.last_checked_ok is None:
441
return now < (self.created + self.timeout)
442
else:
443
return now < (self.last_checked_ok + self.timeout)
444
445
446
class ClientDBus(Client, dbus.service.Object):
749
750
751
def dbus_service_property(dbus_interface, signature="v",
752
access="readwrite", byte_arrays=False):
753
"""Decorators for marking methods of a DBusObjectWithProperties to
754
become properties on the D-Bus.
755
756
The decorated method will be called with no arguments by "Get"
757
and with one argument by "Set".
758
759
The parameters, where they are supported, are the same as
760
dbus.service.method, except there is only "signature", since the
761
type from Get() and the type sent to Set() is the same.
762
"""
763
# Encoding deeply encoded byte arrays is not supported yet by the
764
# "Set" method, so we fail early here:
765
if byte_arrays and signature != "ay":
766
raise ValueError("Byte arrays not supported for non-'ay'"
767
" signature {0!r}".format(signature))
768
def decorator(func):
769
func._dbus_is_property = True
770
func._dbus_interface = dbus_interface
771
func._dbus_signature = signature
772
func._dbus_access = access
773
func._dbus_name = func.__name__
774
if func._dbus_name.endswith("_dbus_property"):
775
func._dbus_name = func._dbus_name[:-14]
776
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
777
return func
778
return decorator
779
780
781
def dbus_interface_annotations(dbus_interface):
782
"""Decorator for marking functions returning interface annotations
783
784
Usage:
785
786
@dbus_interface_annotations("org.example.Interface")
787
def _foo(self): # Function name does not matter
788
return {"org.freedesktop.DBus.Deprecated": "true",
789
"org.freedesktop.DBus.Property.EmitsChangedSignal":
790
"false"}
791
"""
792
def decorator(func):
793
func._dbus_is_interface = True
794
func._dbus_interface = dbus_interface
795
func._dbus_name = dbus_interface
796
return func
797
return decorator
798
799
800
def dbus_annotations(annotations):
801
"""Decorator to annotate D-Bus methods, signals or properties
802
Usage:
803
804
@dbus_service_property("org.example.Interface", signature="b",
805
access="r")
806
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property."
808
"EmitsChangedSignal": "false"})
809
def Property_dbus_property(self):
810
return dbus.Boolean(False)
811
"""
812
def decorator(func):
813
func._dbus_annotations = annotations
814
return func
815
return decorator
816
817
818
class DBusPropertyException(dbus.exceptions.DBusException):
819
"""A base class for D-Bus property-related exceptions
820
"""
821
def __unicode__(self):
822
return unicode(str(self))
823
824
825
class DBusPropertyAccessException(DBusPropertyException):
826
"""A property's access permissions disallows an operation.
827
"""
828
pass
829
830
831
class DBusPropertyNotFound(DBusPropertyException):
832
"""An attempt was made to access a non-existing property.
833
"""
834
pass
835
836
837
class DBusObjectWithProperties(dbus.service.Object):
838
"""A D-Bus object with properties.
839
840
Classes inheriting from this can use the dbus_service_property
841
decorator to expose methods as D-Bus properties. It exposes the
842
standard Get(), Set(), and GetAll() methods on the D-Bus.
843
"""
844
845
@staticmethod
846
def _is_dbus_thing(thing):
847
"""Returns a function testing if an attribute is a D-Bus thing
848
849
If called like _is_dbus_thing("method") it returns a function
850
suitable for use as predicate to inspect.getmembers().
851
"""
852
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
853
False)
854
855
def _get_all_dbus_things(self, thing):
856
"""Returns a generator of (name, attribute) pairs
857
"""
858
return ((getattr(athing.__get__(self), "_dbus_name",
859
name),
860
athing.__get__(self))
861
for cls in self.__class__.__mro__
862
for name, athing in
863
inspect.getmembers(cls,
864
self._is_dbus_thing(thing)))
865
866
def _get_dbus_property(self, interface_name, property_name):
867
"""Returns a bound method if one exists which is a D-Bus
868
property with the specified name and interface.
869
"""
870
for cls in self.__class__.__mro__:
871
for name, value in (inspect.getmembers
872
(cls,
873
self._is_dbus_thing("property"))):
874
if (value._dbus_name == property_name
875
and value._dbus_interface == interface_name):
876
return value.__get__(self)
877
878
# No such property
879
raise DBusPropertyNotFound(self.dbus_object_path + ":"
880
+ interface_name + "."
881
+ property_name)
882
883
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
884
out_signature="v")
885
def Get(self, interface_name, property_name):
886
"""Standard D-Bus property Get() method, see D-Bus standard.
887
"""
888
prop = self._get_dbus_property(interface_name, property_name)
889
if prop._dbus_access == "write":
890
raise DBusPropertyAccessException(property_name)
891
value = prop()
892
if not hasattr(value, "variant_level"):
893
return value
894
return type(value)(value, variant_level=value.variant_level+1)
895
896
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
897
def Set(self, interface_name, property_name, value):
898
"""Standard D-Bus property Set() method, see D-Bus standard.
899
"""
900
prop = self._get_dbus_property(interface_name, property_name)
901
if prop._dbus_access == "read":
902
raise DBusPropertyAccessException(property_name)
903
if prop._dbus_get_args_options["byte_arrays"]:
904
# The byte_arrays option is not supported yet on
905
# signatures other than "ay".
906
if prop._dbus_signature != "ay":
907
raise ValueError
908
value = dbus.ByteArray(b''.join(chr(byte)
909
for byte in value))
910
prop(value)
911
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
913
out_signature="a{sv}")
914
def GetAll(self, interface_name):
915
"""Standard D-Bus property GetAll() method, see D-Bus
916
standard.
917
918
Note: Will not include properties with access="write".
919
"""
920
properties = {}
921
for name, prop in self._get_all_dbus_things("property"):
922
if (interface_name
923
and interface_name != prop._dbus_interface):
924
# Interface non-empty but did not match
925
continue
926
# Ignore write-only properties
927
if prop._dbus_access == "write":
928
continue
929
value = prop()
930
if not hasattr(value, "variant_level"):
931
properties[name] = value
932
continue
933
properties[name] = type(value)(value, variant_level=
934
value.variant_level+1)
935
return dbus.Dictionary(properties, signature="sv")
936
937
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
938
out_signature="s",
939
path_keyword='object_path',
940
connection_keyword='connection')
941
def Introspect(self, object_path, connection):
942
"""Overloading of standard D-Bus method.
943
944
Inserts property tags and interface annotation tags.
945
"""
946
xmlstring = dbus.service.Object.Introspect(self, object_path,
947
connection)
948
try:
949
document = xml.dom.minidom.parseString(xmlstring)
950
def make_tag(document, name, prop):
951
e = document.createElement("property")
952
e.setAttribute("name", name)
953
e.setAttribute("type", prop._dbus_signature)
954
e.setAttribute("access", prop._dbus_access)
955
return e
956
for if_tag in document.getElementsByTagName("interface"):
957
# Add property tags
958
for tag in (make_tag(document, name, prop)
959
for name, prop
960
in self._get_all_dbus_things("property")
961
if prop._dbus_interface
962
== if_tag.getAttribute("name")):
963
if_tag.appendChild(tag)
964
# Add annotation tags
965
for typ in ("method", "signal", "property"):
966
for tag in if_tag.getElementsByTagName(typ):
967
annots = dict()
968
for name, prop in (self.
969
_get_all_dbus_things(typ)):
970
if (name == tag.getAttribute("name")
971
and prop._dbus_interface
972
== if_tag.getAttribute("name")):
973
annots.update(getattr
974
(prop,
975
"_dbus_annotations",
976
{}))
977
for name, value in annots.iteritems():
978
ann_tag = document.createElement(
979
"annotation")
980
ann_tag.setAttribute("name", name)
981
ann_tag.setAttribute("value", value)
982
tag.appendChild(ann_tag)
983
# Add interface annotation tags
984
for annotation, value in dict(
985
itertools.chain.from_iterable(
986
annotations().iteritems()
987
for name, annotations in
988
self._get_all_dbus_things("interface")
989
if name == if_tag.getAttribute("name")
990
)).iteritems():
991
ann_tag = document.createElement("annotation")
992
ann_tag.setAttribute("name", annotation)
993
ann_tag.setAttribute("value", value)
994
if_tag.appendChild(ann_tag)
995
# Add the names to the return values for the
996
# "org.freedesktop.DBus.Properties" methods
997
if (if_tag.getAttribute("name")
998
== "org.freedesktop.DBus.Properties"):
999
for cn in if_tag.getElementsByTagName("method"):
1000
if cn.getAttribute("name") == "Get":
1001
for arg in cn.getElementsByTagName("arg"):
1002
if (arg.getAttribute("direction")
1003
== "out"):
1004
arg.setAttribute("name", "value")
1005
elif cn.getAttribute("name") == "GetAll":
1006
for arg in cn.getElementsByTagName("arg"):
1007
if (arg.getAttribute("direction")
1008
== "out"):
1009
arg.setAttribute("name", "props")
1010
xmlstring = document.toxml("utf-8")
1011
document.unlink()
1012
except (AttributeError, xml.dom.DOMException,
1013
xml.parsers.expat.ExpatError) as error:
1014
logger.error("Failed to override Introspection method",
1015
exc_info=error)
1016
return xmlstring
1017
1018
1019
def datetime_to_dbus(dt, variant_level=0):
1020
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1021
if dt is None:
1022
return dbus.String("", variant_level = variant_level)
1023
return dbus.String(dt.isoformat(),
1024
variant_level=variant_level)
1025
1026
1027
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1028
"""A class decorator; applied to a subclass of
1029
dbus.service.Object, it will add alternate D-Bus attributes with
1030
interface names according to the "alt_interface_names" mapping.
1031
Usage:
1032
1033
@alternate_dbus_interfaces({"org.example.Interface":
1034
"net.example.AlternateInterface"})
1035
class SampleDBusObject(dbus.service.Object):
1036
@dbus.service.method("org.example.Interface")
1037
def SampleDBusMethod():
1038
pass
1039
1040
The above "SampleDBusMethod" on "SampleDBusObject" will be
1041
reachable via two interfaces: "org.example.Interface" and
1042
"net.example.AlternateInterface", the latter of which will have
1043
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1044
"true", unless "deprecate" is passed with a False value.
1045
1046
This works for methods and signals, and also for D-Bus properties
1047
(from DBusObjectWithProperties) and interfaces (from the
1048
dbus_interface_annotations decorator).
1049
"""
1050
def wrapper(cls):
1051
for orig_interface_name, alt_interface_name in (
1052
alt_interface_names.iteritems()):
1053
attr = {}
1054
interface_names = set()
1055
# Go though all attributes of the class
1056
for attrname, attribute in inspect.getmembers(cls):
1057
# Ignore non-D-Bus attributes, and D-Bus attributes
1058
# with the wrong interface name
1059
if (not hasattr(attribute, "_dbus_interface")
1060
or not attribute._dbus_interface
1061
.startswith(orig_interface_name)):
1062
continue
1063
# Create an alternate D-Bus interface name based on
1064
# the current name
1065
alt_interface = (attribute._dbus_interface
1066
.replace(orig_interface_name,
1067
alt_interface_name))
1068
interface_names.add(alt_interface)
1069
# Is this a D-Bus signal?
1070
if getattr(attribute, "_dbus_is_signal", False):
1071
# Extract the original non-method function by
1072
# black magic
1073
nonmethod_func = (dict(
1074
zip(attribute.func_code.co_freevars,
1075
attribute.__closure__))["func"]
1076
.cell_contents)
1077
# Create a new, but exactly alike, function
1078
# object, and decorate it to be a new D-Bus signal
1079
# with the alternate D-Bus interface name
1080
new_function = (dbus.service.signal
1081
(alt_interface,
1082
attribute._dbus_signature)
1083
(types.FunctionType(
1084
nonmethod_func.func_code,
1085
nonmethod_func.func_globals,
1086
nonmethod_func.func_name,
1087
nonmethod_func.func_defaults,
1088
nonmethod_func.func_closure)))
1089
# Copy annotations, if any
1090
try:
1091
new_function._dbus_annotations = (
1092
dict(attribute._dbus_annotations))
1093
except AttributeError:
1094
pass
1095
# Define a creator of a function to call both the
1096
# original and alternate functions, so both the
1097
# original and alternate signals gets sent when
1098
# the function is called
1099
def fixscope(func1, func2):
1100
"""This function is a scope container to pass
1101
func1 and func2 to the "call_both" function
1102
outside of its arguments"""
1103
def call_both(*args, **kwargs):
1104
"""This function will emit two D-Bus
1105
signals by calling func1 and func2"""
1106
func1(*args, **kwargs)
1107
func2(*args, **kwargs)
1108
return call_both
1109
# Create the "call_both" function and add it to
1110
# the class
1111
attr[attrname] = fixscope(attribute, new_function)
1112
# Is this a D-Bus method?
1113
elif getattr(attribute, "_dbus_is_method", False):
1114
# Create a new, but exactly alike, function
1115
# object. Decorate it to be a new D-Bus method
1116
# with the alternate D-Bus interface name. Add it
1117
# to the class.
1118
attr[attrname] = (dbus.service.method
1119
(alt_interface,
1120
attribute._dbus_in_signature,
1121
attribute._dbus_out_signature)
1122
(types.FunctionType
1123
(attribute.func_code,
1124
attribute.func_globals,
1125
attribute.func_name,
1126
attribute.func_defaults,
1127
attribute.func_closure)))
1128
# Copy annotations, if any
1129
try:
1130
attr[attrname]._dbus_annotations = (
1131
dict(attribute._dbus_annotations))
1132
except AttributeError:
1133
pass
1134
# Is this a D-Bus property?
1135
elif getattr(attribute, "_dbus_is_property", False):
1136
# Create a new, but exactly alike, function
1137
# object, and decorate it to be a new D-Bus
1138
# property with the alternate D-Bus interface
1139
# name. Add it to the class.
1140
attr[attrname] = (dbus_service_property
1141
(alt_interface,
1142
attribute._dbus_signature,
1143
attribute._dbus_access,
1144
attribute
1145
._dbus_get_args_options
1146
["byte_arrays"])
1147
(types.FunctionType
1148
(attribute.func_code,
1149
attribute.func_globals,
1150
attribute.func_name,
1151
attribute.func_defaults,
1152
attribute.func_closure)))
1153
# Copy annotations, if any
1154
try:
1155
attr[attrname]._dbus_annotations = (
1156
dict(attribute._dbus_annotations))
1157
except AttributeError:
1158
pass
1159
# Is this a D-Bus interface?
1160
elif getattr(attribute, "_dbus_is_interface", False):
1161
# Create a new, but exactly alike, function
1162
# object. Decorate it to be a new D-Bus interface
1163
# with the alternate D-Bus interface name. Add it
1164
# to the class.
1165
attr[attrname] = (dbus_interface_annotations
1166
(alt_interface)
1167
(types.FunctionType
1168
(attribute.func_code,
1169
attribute.func_globals,
1170
attribute.func_name,
1171
attribute.func_defaults,
1172
attribute.func_closure)))
1173
if deprecate:
1174
# Deprecate all alternate interfaces
1175
iname="_AlternateDBusNames_interface_annotation{0}"
1176
for interface_name in interface_names:
1177
@dbus_interface_annotations(interface_name)
1178
def func(self):
1179
return { "org.freedesktop.DBus.Deprecated":
1180
"true" }
1181
# Find an unused name
1182
for aname in (iname.format(i)
1183
for i in itertools.count()):
1184
if aname not in attr:
1185
attr[aname] = func
1186
break
1187
if interface_names:
1188
# Replace the class with a new subclass of it with
1189
# methods, signals, etc. as created above.
1190
cls = type(b"{0}Alternate".format(cls.__name__),
1191
(cls,), attr)
1192
return cls
1193
return wrapper
1194
1195
1196
@alternate_dbus_interfaces({"se.recompile.Mandos":
1197
"se.bsnet.fukt.Mandos"})
1198
class ClientDBus(Client, DBusObjectWithProperties):
447
1199
"""A Client class using D-Bus
448
1200
449
1201
Attributes:
450
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
1202
dbus_object_path: dbus.ObjectPath
1203
bus: dbus.SystemBus()
451
1204
"""
1205
1206
runtime_expansions = (Client.runtime_expansions
1207
+ ("dbus_object_path",))
1208
452
1209
# dbus.service.Object doesn't use super(), so we can't either.
453
1210
454
def __init__(self, *args, **kwargs):
1211
def __init__(self, bus = None, *args, **kwargs):
1212
self.bus = bus
455
1213
Client.__init__(self, *args, **kwargs)
456
1214
# Only now, when this client is initialized, can it show up on
457
1215
# the D-Bus
1216
client_object_name = unicode(self.name).translate(
1217
{ord("."): ord("_"),
1218
ord("-"): ord("_")})
458
1219
self.dbus_object_path = (dbus.ObjectPath
459
(u"/clients/"
460
+ self.name.replace(u".", u"_")))
461
dbus.service.Object.__init__(self, bus,
462
self.dbus_object_path)
463
def enable(self):
464
oldstate = getattr(self, u"enabled", False)
465
r = Client.enable(self)
466
if oldstate != self.enabled:
467
# Emit D-Bus signals
468
self.PropertyChanged(dbus.String(u"enabled"),
469
dbus.Boolean(True, variant_level=1))
470
self.PropertyChanged(dbus.String(u"last_enabled"),
471
(_datetime_to_dbus(self.last_enabled,
472
variant_level=1)))
473
return r
474
475
def disable(self, signal = True):
476
oldstate = getattr(self, u"enabled", False)
477
r = Client.disable(self)
478
if signal and oldstate != self.enabled:
479
# Emit D-Bus signal
480
self.PropertyChanged(dbus.String(u"enabled"),
481
dbus.Boolean(False, variant_level=1))
482
return r
1220
("/clients/" + client_object_name))
1221
DBusObjectWithProperties.__init__(self, self.bus,
1222
self.dbus_object_path)
1223
1224
def notifychangeproperty(transform_func,
1225
dbus_name, type_func=lambda x: x,
1226
variant_level=1):
1227
""" Modify a variable so that it's a property which announces
1228
its changes to DBus.
1229
1230
transform_fun: Function that takes a value and a variant_level
1231
and transforms it to a D-Bus type.
1232
dbus_name: D-Bus name of the variable
1233
type_func: Function that transform the value before sending it
1234
to the D-Bus. Default: no transform
1235
variant_level: D-Bus variant level. Default: 1
1236
"""
1237
attrname = "_{0}".format(dbus_name)
1238
def setter(self, value):
1239
if hasattr(self, "dbus_object_path"):
1240
if (not hasattr(self, attrname) or
1241
type_func(getattr(self, attrname, None))
1242
!= type_func(value)):
1243
dbus_value = transform_func(type_func(value),
1244
variant_level
1245
=variant_level)
1246
self.PropertyChanged(dbus.String(dbus_name),
1247
dbus_value)
1248
setattr(self, attrname, value)
1249
1250
return property(lambda self: getattr(self, attrname), setter)
1251
1252
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1253
approvals_pending = notifychangeproperty(dbus.Boolean,
1254
"ApprovalPending",
1255
type_func = bool)
1256
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1257
last_enabled = notifychangeproperty(datetime_to_dbus,
1258
"LastEnabled")
1259
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1260
type_func = lambda checker:
1261
checker is not None)
1262
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1263
"LastCheckedOK")
1264
last_checker_status = notifychangeproperty(dbus.Int16,
1265
"LastCheckerStatus")
1266
last_approval_request = notifychangeproperty(
1267
datetime_to_dbus, "LastApprovalRequest")
1268
approved_by_default = notifychangeproperty(dbus.Boolean,
1269
"ApprovedByDefault")
1270
approval_delay = notifychangeproperty(dbus.UInt64,
1271
"ApprovalDelay",
1272
type_func =
1273
timedelta_to_milliseconds)
1274
approval_duration = notifychangeproperty(
1275
dbus.UInt64, "ApprovalDuration",
1276
type_func = timedelta_to_milliseconds)
1277
host = notifychangeproperty(dbus.String, "Host")
1278
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1279
type_func =
1280
timedelta_to_milliseconds)
1281
extended_timeout = notifychangeproperty(
1282
dbus.UInt64, "ExtendedTimeout",
1283
type_func = timedelta_to_milliseconds)
1284
interval = notifychangeproperty(dbus.UInt64,
1285
"Interval",
1286
type_func =
1287
timedelta_to_milliseconds)
1288
checker_command = notifychangeproperty(dbus.String, "Checker")
1289
1290
del notifychangeproperty
483
1291
484
1292
def __del__(self, *args, **kwargs):
485
1293
try:
486
1294
self.remove_from_connection()
487
1295
except LookupError:
488
1296
pass
489
if hasattr(dbus.service.Object, u"__del__"):
490
dbus.service.Object.__del__(self, *args, **kwargs)
1297
if hasattr(DBusObjectWithProperties, "__del__"):
1298
DBusObjectWithProperties.__del__(self, *args, **kwargs)
491
1299
Client.__del__(self, *args, **kwargs)
492
1300
493
1301
def checker_callback(self, pid, condition, command,
494
1302
*args, **kwargs):
495
1303
self.checker_callback_tag = None
496
1304
self.checker = None
497
# Emit D-Bus signal
498
self.PropertyChanged(dbus.String(u"checker_running"),
499
dbus.Boolean(False, variant_level=1))
500
1305
if os.WIFEXITED(condition):
501
1306
exitstatus = os.WEXITSTATUS(condition)
502
1307
# Emit D-Bus signal
512
1317
return Client.checker_callback(self, pid, condition, command,
513
1318
*args, **kwargs)
514
1319
515
def checked_ok(self, *args, **kwargs):
516
r = Client.checked_ok(self, *args, **kwargs)
517
# Emit D-Bus signal
518
self.PropertyChanged(
519
dbus.String(u"last_checked_ok"),
520
(_datetime_to_dbus(self.last_checked_ok,
521
variant_level=1)))
522
return r
523
524
1320
def start_checker(self, *args, **kwargs):
525
1321
old_checker = self.checker
526
1322
if self.checker is not None:
533
1329
and old_checker_pid != self.checker.pid):
534
1330
# Emit D-Bus signal
535
1331
self.CheckerStarted(self.current_checker_command)
536
self.PropertyChanged(
537
dbus.String(u"checker_running"),
538
dbus.Boolean(True, variant_level=1))
539
return r
540
541
def stop_checker(self, *args, **kwargs):
542
old_checker = getattr(self, u"checker", None)
543
r = Client.stop_checker(self, *args, **kwargs)
544
if (old_checker is not None
545
and getattr(self, u"checker", None) is None):
546
self.PropertyChanged(dbus.String(u"checker_running"),
547
dbus.Boolean(False, variant_level=1))
548
return r
549
550
## D-Bus methods & signals
551
_interface = u"se.bsnet.fukt.Mandos.Client"
552
553
# CheckedOK - method
554
@dbus.service.method(_interface)
555
def CheckedOK(self):
556
return self.checked_ok()
1332
return r
1333
1334
def _reset_approved(self):
1335
self.approved = None
1336
return False
1337
1338
def approve(self, value=True):
1339
self.approved = value
1340
gobject.timeout_add(timedelta_to_milliseconds
1341
(self.approval_duration),
1342
self._reset_approved)
1343
self.send_changedstate()
1344
1345
## D-Bus methods, signals & properties
1346
_interface = "se.recompile.Mandos.Client"
1347
1348
## Interfaces
1349
1350
@dbus_interface_annotations(_interface)
1351
def _foo(self):
1352
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1353
"false"}
1354
1355
## Signals
557
1356
558
1357
# CheckerCompleted - signal
559
@dbus.service.signal(_interface, signature=u"nxs")
1358
@dbus.service.signal(_interface, signature="nxs")
560
1359
def CheckerCompleted(self, exitcode, waitstatus, command):
561
1360
"D-Bus signal"
562
1361
pass
563
1362
564
1363
# CheckerStarted - signal
565
@dbus.service.signal(_interface, signature=u"s")
1364
@dbus.service.signal(_interface, signature="s")
566
1365
def CheckerStarted(self, command):
567
1366
"D-Bus signal"
568
1367
pass
569
1368
570
# GetAllProperties - method
571
@dbus.service.method(_interface, out_signature=u"a{sv}")
572
def GetAllProperties(self):
573
"D-Bus method"
574
return dbus.Dictionary({
575
dbus.String(u"name"):
576
dbus.String(self.name, variant_level=1),
577
dbus.String(u"fingerprint"):
578
dbus.String(self.fingerprint, variant_level=1),
579
dbus.String(u"host"):
580
dbus.String(self.host, variant_level=1),
581
dbus.String(u"created"):
582
_datetime_to_dbus(self.created, variant_level=1),
583
dbus.String(u"last_enabled"):
584
(_datetime_to_dbus(self.last_enabled,
585
variant_level=1)
586
if self.last_enabled is not None
587
else dbus.Boolean(False, variant_level=1)),
588
dbus.String(u"enabled"):
589
dbus.Boolean(self.enabled, variant_level=1),
590
dbus.String(u"last_checked_ok"):
591
(_datetime_to_dbus(self.last_checked_ok,
592
variant_level=1)
593
if self.last_checked_ok is not None
594
else dbus.Boolean (False, variant_level=1)),
595
dbus.String(u"timeout"):
596
dbus.UInt64(self.timeout_milliseconds(),
597
variant_level=1),
598
dbus.String(u"interval"):
599
dbus.UInt64(self.interval_milliseconds(),
600
variant_level=1),
601
dbus.String(u"checker"):
602
dbus.String(self.checker_command,
603
variant_level=1),
604
dbus.String(u"checker_running"):
605
dbus.Boolean(self.checker is not None,
606
variant_level=1),
607
dbus.String(u"object_path"):
608
dbus.ObjectPath(self.dbus_object_path,
609
variant_level=1)
610
}, signature=u"sv")
611
612
# IsStillValid - method
613
@dbus.service.method(_interface, out_signature=u"b")
614
def IsStillValid(self):
615
return self.still_valid()
616
617
1369
# PropertyChanged - signal
618
@dbus.service.signal(_interface, signature=u"sv")
1370
@dbus.service.signal(_interface, signature="sv")
619
1371
def PropertyChanged(self, property, value):
620
1372
"D-Bus signal"
621
1373
pass
622
1374
623
# ReceivedSecret - signal
1375
# GotSecret - signal
624
1376
@dbus.service.signal(_interface)
625
def ReceivedSecret(self):
626
"D-Bus signal"
1377
def GotSecret(self):
1378
"""D-Bus signal
1379
Is sent after a successful transfer of secret from the Mandos
1380
server to mandos-client
1381
"""
627
1382
pass
628
1383
629
1384
# Rejected - signal
630
@dbus.service.signal(_interface)
631
def Rejected(self):
1385
@dbus.service.signal(_interface, signature="s")
1386
def Rejected(self, reason):
632
1387
"D-Bus signal"
633
1388
pass
634
1389
635
# SetChecker - method
636
@dbus.service.method(_interface, in_signature=u"s")
637
def SetChecker(self, checker):
638
"D-Bus setter method"
639
self.checker_command = checker
640
# Emit D-Bus signal
641
self.PropertyChanged(dbus.String(u"checker"),
642
dbus.String(self.checker_command,
643
variant_level=1))
644
645
# SetHost - method
646
@dbus.service.method(_interface, in_signature=u"s")
647
def SetHost(self, host):
648
"D-Bus setter method"
649
self.host = host
650
# Emit D-Bus signal
651
self.PropertyChanged(dbus.String(u"host"),
652
dbus.String(self.host, variant_level=1))
653
654
# SetInterval - method
655
@dbus.service.method(_interface, in_signature=u"t")
656
def SetInterval(self, milliseconds):
657
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
658
# Emit D-Bus signal
659
self.PropertyChanged(dbus.String(u"interval"),
660
(dbus.UInt64(self.interval_milliseconds(),
661
variant_level=1)))
662
663
# SetSecret - method
664
@dbus.service.method(_interface, in_signature=u"ay",
665
byte_arrays=True)
666
def SetSecret(self, secret):
667
"D-Bus setter method"
668
self.secret = str(secret)
669
670
# SetTimeout - method
671
@dbus.service.method(_interface, in_signature=u"t")
672
def SetTimeout(self, milliseconds):
673
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
674
# Emit D-Bus signal
675
self.PropertyChanged(dbus.String(u"timeout"),
676
(dbus.UInt64(self.timeout_milliseconds(),
677
variant_level=1)))
1390
# NeedApproval - signal
1391
@dbus.service.signal(_interface, signature="tb")
1392
def NeedApproval(self, timeout, default):
1393
"D-Bus signal"
1394
return self.need_approval()
1395
1396
## Methods
1397
1398
# Approve - method
1399
@dbus.service.method(_interface, in_signature="b")
1400
def Approve(self, value):
1401
self.approve(value)
1402
1403
# CheckedOK - method
1404
@dbus.service.method(_interface)
1405
def CheckedOK(self):
1406
self.checked_ok()
678
1407
679
1408
# Enable - method
680
1409
@dbus.service.method(_interface)
699
1428
def StopChecker(self):
700
1429
self.stop_checker()
701
1430
1431
## Properties
1432
1433
# ApprovalPending - property
1434
@dbus_service_property(_interface, signature="b", access="read")
1435
def ApprovalPending_dbus_property(self):
1436
return dbus.Boolean(bool(self.approvals_pending))
1437
1438
# ApprovedByDefault - property
1439
@dbus_service_property(_interface, signature="b",
1440
access="readwrite")
1441
def ApprovedByDefault_dbus_property(self, value=None):
1442
if value is None: # get
1443
return dbus.Boolean(self.approved_by_default)
1444
self.approved_by_default = bool(value)
1445
1446
# ApprovalDelay - property
1447
@dbus_service_property(_interface, signature="t",
1448
access="readwrite")
1449
def ApprovalDelay_dbus_property(self, value=None):
1450
if value is None: # get
1451
return dbus.UInt64(self.approval_delay_milliseconds())
1452
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1453
1454
# ApprovalDuration - property
1455
@dbus_service_property(_interface, signature="t",
1456
access="readwrite")
1457
def ApprovalDuration_dbus_property(self, value=None):
1458
if value is None: # get
1459
return dbus.UInt64(timedelta_to_milliseconds(
1460
self.approval_duration))
1461
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1462
1463
# Name - property
1464
@dbus_service_property(_interface, signature="s", access="read")
1465
def Name_dbus_property(self):
1466
return dbus.String(self.name)
1467
1468
# Fingerprint - property
1469
@dbus_service_property(_interface, signature="s", access="read")
1470
def Fingerprint_dbus_property(self):
1471
return dbus.String(self.fingerprint)
1472
1473
# Host - property
1474
@dbus_service_property(_interface, signature="s",
1475
access="readwrite")
1476
def Host_dbus_property(self, value=None):
1477
if value is None: # get
1478
return dbus.String(self.host)
1479
self.host = unicode(value)
1480
1481
# Created - property
1482
@dbus_service_property(_interface, signature="s", access="read")
1483
def Created_dbus_property(self):
1484
return datetime_to_dbus(self.created)
1485
1486
# LastEnabled - property
1487
@dbus_service_property(_interface, signature="s", access="read")
1488
def LastEnabled_dbus_property(self):
1489
return datetime_to_dbus(self.last_enabled)
1490
1491
# Enabled - property
1492
@dbus_service_property(_interface, signature="b",
1493
access="readwrite")
1494
def Enabled_dbus_property(self, value=None):
1495
if value is None: # get
1496
return dbus.Boolean(self.enabled)
1497
if value:
1498
self.enable()
1499
else:
1500
self.disable()
1501
1502
# LastCheckedOK - property
1503
@dbus_service_property(_interface, signature="s",
1504
access="readwrite")
1505
def LastCheckedOK_dbus_property(self, value=None):
1506
if value is not None:
1507
self.checked_ok()
1508
return
1509
return datetime_to_dbus(self.last_checked_ok)
1510
1511
# LastCheckerStatus - property
1512
@dbus_service_property(_interface, signature="n",
1513
access="read")
1514
def LastCheckerStatus_dbus_property(self):
1515
return dbus.Int16(self.last_checker_status)
1516
1517
# Expires - property
1518
@dbus_service_property(_interface, signature="s", access="read")
1519
def Expires_dbus_property(self):
1520
return datetime_to_dbus(self.expires)
1521
1522
# LastApprovalRequest - property
1523
@dbus_service_property(_interface, signature="s", access="read")
1524
def LastApprovalRequest_dbus_property(self):
1525
return datetime_to_dbus(self.last_approval_request)
1526
1527
# Timeout - property
1528
@dbus_service_property(_interface, signature="t",
1529
access="readwrite")
1530
def Timeout_dbus_property(self, value=None):
1531
if value is None: # get
1532
return dbus.UInt64(self.timeout_milliseconds())
1533
old_timeout = self.timeout
1534
self.timeout = datetime.timedelta(0, 0, 0, value)
1535
# Reschedule disabling
1536
if self.enabled:
1537
now = datetime.datetime.utcnow()
1538
self.expires += self.timeout - old_timeout
1539
if self.expires <= now:
1540
# The timeout has passed
1541
self.disable()
1542
else:
1543
if (getattr(self, "disable_initiator_tag", None)
1544
is None):
1545
return
1546
gobject.source_remove(self.disable_initiator_tag)
1547
self.disable_initiator_tag = (
1548
gobject.timeout_add(
1549
timedelta_to_milliseconds(self.expires - now),
1550
self.disable))
1551
1552
# ExtendedTimeout - property
1553
@dbus_service_property(_interface, signature="t",
1554
access="readwrite")
1555
def ExtendedTimeout_dbus_property(self, value=None):
1556
if value is None: # get
1557
return dbus.UInt64(self.extended_timeout_milliseconds())
1558
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1559
1560
# Interval - property
1561
@dbus_service_property(_interface, signature="t",
1562
access="readwrite")
1563
def Interval_dbus_property(self, value=None):
1564
if value is None: # get
1565
return dbus.UInt64(self.interval_milliseconds())
1566
self.interval = datetime.timedelta(0, 0, 0, value)
1567
if getattr(self, "checker_initiator_tag", None) is None:
1568
return
1569
if self.enabled:
1570
# Reschedule checker run
1571
gobject.source_remove(self.checker_initiator_tag)
1572
self.checker_initiator_tag = (gobject.timeout_add
1573
(value, self.start_checker))
1574
self.start_checker() # Start one now, too
1575
1576
# Checker - property
1577
@dbus_service_property(_interface, signature="s",
1578
access="readwrite")
1579
def Checker_dbus_property(self, value=None):
1580
if value is None: # get
1581
return dbus.String(self.checker_command)
1582
self.checker_command = unicode(value)
1583
1584
# CheckerRunning - property
1585
@dbus_service_property(_interface, signature="b",
1586
access="readwrite")
1587
def CheckerRunning_dbus_property(self, value=None):
1588
if value is None: # get
1589
return dbus.Boolean(self.checker is not None)
1590
if value:
1591
self.start_checker()
1592
else:
1593
self.stop_checker()
1594
1595
# ObjectPath - property
1596
@dbus_service_property(_interface, signature="o", access="read")
1597
def ObjectPath_dbus_property(self):
1598
return self.dbus_object_path # is already a dbus.ObjectPath
1599
1600
# Secret = property
1601
@dbus_service_property(_interface, signature="ay",
1602
access="write", byte_arrays=True)
1603
def Secret_dbus_property(self, value):
1604
self.secret = str(value)
1605
702
1606
del _interface
703
1607
704
1608
705
class ClientHandler(SocketServer.BaseRequestHandler, object):
1609
class ProxyClient(object):
1610
def __init__(self, child_pipe, fpr, address):
1611
self._pipe = child_pipe
1612
self._pipe.send(('init', fpr, address))
1613
if not self._pipe.recv():
1614
raise KeyError()
1615
1616
def __getattribute__(self, name):
1617
if name == '_pipe':
1618
return super(ProxyClient, self).__getattribute__(name)
1619
self._pipe.send(('getattr', name))
1620
data = self._pipe.recv()
1621
if data[0] == 'data':
1622
return data[1]
1623
if data[0] == 'function':
1624
def func(*args, **kwargs):
1625
self._pipe.send(('funcall', name, args, kwargs))
1626
return self._pipe.recv()[1]
1627
return func
1628
1629
def __setattr__(self, name, value):
1630
if name == '_pipe':
1631
return super(ProxyClient, self).__setattr__(name, value)
1632
self._pipe.send(('setattr', name, value))
1633
1634
1635
class ClientHandler(socketserver.BaseRequestHandler, object):
706
1636
"""A class to handle client connections.
707
1637
708
1638
Instantiated once for each connection to handle it.
709
1639
Note: This will run in its own forked process."""
710
1640
711
1641
def handle(self):
712
logger.info(u"TCP connection from: %s",
713
unicode(self.client_address))
714
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
715
# Open IPC pipe to parent process
716
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1642
with contextlib.closing(self.server.child_pipe) as child_pipe:
1643
logger.info("TCP connection from: %s",
1644
unicode(self.client_address))
1645
logger.debug("Pipe FD: %d",
1646
self.server.child_pipe.fileno())
1647
717
1648
session = (gnutls.connection
718
1649
.ClientSession(self.request,
719
1650
gnutls.connection
720
1651
.X509Credentials()))
721
1652
722
line = self.request.makefile().readline()
723
logger.debug(u"Protocol version: %r", line)
724
try:
725
if int(line.strip().split()[0]) > 1:
726
raise RuntimeError
727
except (ValueError, IndexError, RuntimeError), error:
728
logger.error(u"Unknown protocol version: %s", error)
729
return
730
731
1653
# Note: gnutls.connection.X509Credentials is really a
732
1654
# generic GnuTLS certificate credentials object so long as
733
1655
# no X.509 keys are added to it. Therefore, we can use it
734
1656
# here despite using OpenPGP certificates.
735
1657
736
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
737
# u"+AES-256-CBC", u"+SHA1",
738
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
739
# u"+DHE-DSS"))
1658
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1659
# "+AES-256-CBC", "+SHA1",
1660
# "+COMP-NULL", "+CTYPE-OPENPGP",
1661
# "+DHE-DSS"))
740
1662
# Use a fallback default, since this MUST be set.
741
1663
priority = self.server.gnutls_priority
742
1664
if priority is None:
743
priority = u"NORMAL"
1665
priority = "NORMAL"
744
1666
(gnutls.library.functions
745
1667
.gnutls_priority_set_direct(session._c_object,
746
1668
priority, None))
747
1669
1670
# Start communication using the Mandos protocol
1671
# Get protocol number
1672
line = self.request.makefile().readline()
1673
logger.debug("Protocol version: %r", line)
1674
try:
1675
if int(line.strip().split()[0]) > 1:
1676
raise RuntimeError
1677
except (ValueError, IndexError, RuntimeError) as error:
1678
logger.error("Unknown protocol version: %s", error)
1679
return
1680
1681
# Start GnuTLS connection
748
1682
try:
749
1683
session.handshake()
750
except gnutls.errors.GNUTLSError, error:
751
logger.warning(u"Handshake failed: %s", error)
1684
except gnutls.errors.GNUTLSError as error:
1685
logger.warning("Handshake failed: %s", error)
752
1686
# Do not run session.bye() here: the session is not
753
1687
# established. Just abandon the request.
754
1688
return
755
logger.debug(u"Handshake succeeded")
1689
logger.debug("Handshake succeeded")
1690
1691
approval_required = False
756
1692
try:
757
fpr = self.fingerprint(self.peer_certificate(session))
758
except (TypeError, gnutls.errors.GNUTLSError), error:
759
logger.warning(u"Bad certificate: %s", error)
760
session.bye()
761
return
762
logger.debug(u"Fingerprint: %s", fpr)
1693
try:
1694
fpr = self.fingerprint(self.peer_certificate
1695
(session))
1696
except (TypeError,
1697
gnutls.errors.GNUTLSError) as error:
1698
logger.warning("Bad certificate: %s", error)
1699
return
1700
logger.debug("Fingerprint: %s", fpr)
1701
1702
try:
1703
client = ProxyClient(child_pipe, fpr,
1704
self.client_address)
1705
except KeyError:
1706
return
1707
1708
if client.approval_delay:
1709
delay = client.approval_delay
1710
client.approvals_pending += 1
1711
approval_required = True
1712
1713
while True:
1714
if not client.enabled:
1715
logger.info("Client %s is disabled",
1716
client.name)
1717
if self.server.use_dbus:
1718
# Emit D-Bus signal
1719
client.Rejected("Disabled")
1720
return
1721
1722
if client.approved or not client.approval_delay:
1723
#We are approved or approval is disabled
1724
break
1725
elif client.approved is None:
1726
logger.info("Client %s needs approval",
1727
client.name)
1728
if self.server.use_dbus:
1729
# Emit D-Bus signal
1730
client.NeedApproval(
1731
client.approval_delay_milliseconds(),
1732
client.approved_by_default)
1733
else:
1734
logger.warning("Client %s was not approved",
1735
client.name)
1736
if self.server.use_dbus:
1737
# Emit D-Bus signal
1738
client.Rejected("Denied")
1739
return
1740
1741
#wait until timeout or approved
1742
time = datetime.datetime.now()
1743
client.changedstate.acquire()
1744
client.changedstate.wait(
1745
float(timedelta_to_milliseconds(delay)
1746
/ 1000))
1747
client.changedstate.release()
1748
time2 = datetime.datetime.now()
1749
if (time2 - time) >= delay:
1750
if not client.approved_by_default:
1751
logger.warning("Client %s timed out while"
1752
" waiting for approval",
1753
client.name)
1754
if self.server.use_dbus:
1755
# Emit D-Bus signal
1756
client.Rejected("Approval timed out")
1757
return
1758
else:
1759
break
1760
else:
1761
delay -= time2 - time
1762
1763
sent_size = 0
1764
while sent_size < len(client.secret):
1765
try:
1766
sent = session.send(client.secret[sent_size:])
1767
except gnutls.errors.GNUTLSError as error:
1768
logger.warning("gnutls send failed",
1769
exc_info=error)
1770
return
1771
logger.debug("Sent: %d, remaining: %d",
1772
sent, len(client.secret)
1773
- (sent_size + sent))
1774
sent_size += sent
1775
1776
logger.info("Sending secret to %s", client.name)
1777
# bump the timeout using extended_timeout
1778
client.bump_timeout(client.extended_timeout)
1779
if self.server.use_dbus:
1780
# Emit D-Bus signal
1781
client.GotSecret()
763
1782
764
for c in self.server.clients:
765
if c.fingerprint == fpr:
766
client = c
767
break
768
else:
769
ipc.write(u"NOTFOUND %s\n" % fpr)
770
session.bye()
771
return
772
# Have to check if client.still_valid(), since it is
773
# possible that the client timed out while establishing
774
# the GnuTLS session.
775
if not client.still_valid():
776
ipc.write(u"INVALID %s\n" % client.name)
777
session.bye()
778
return
779
ipc.write(u"SENDING %s\n" % client.name)
780
sent_size = 0
781
while sent_size < len(client.secret):
782
sent = session.send(client.secret[sent_size:])
783
logger.debug(u"Sent: %d, remaining: %d",
784
sent, len(client.secret)
785
- (sent_size + sent))
786
sent_size += sent
787
session.bye()
1783
finally:
1784
if approval_required:
1785
client.approvals_pending -= 1
1786
try:
1787
session.bye()
1788
except gnutls.errors.GNUTLSError as error:
1789
logger.warning("GnuTLS bye failed",
1790
exc_info=error)
788
1791
789
1792
@staticmethod
790
1793
def peer_certificate(session):
800
1803
.gnutls_certificate_get_peers
801
1804
(session._c_object, ctypes.byref(list_size)))
802
1805
if not bool(cert_list) and list_size.value != 0:
803
raise gnutls.errors.GNUTLSError(u"error getting peer"
804
u" certificate")
1806
raise gnutls.errors.GNUTLSError("error getting peer"
1807
" certificate")
805
1808
if list_size.value == 0:
806
1809
return None
807
1810
cert = cert_list[0]
833
1836
if crtverify.value != 0:
834
1837
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
835
1838
raise (gnutls.errors.CertificateSecurityError
836
(u"Verify failed"))
1839
("Verify failed"))
837
1840
# New buffer for the fingerprint
838
1841
buf = ctypes.create_string_buffer(20)
839
1842
buf_len = ctypes.c_size_t()
846
1849
# Convert the buffer to a Python bytestring
847
1850
fpr = ctypes.string_at(buf, buf_len.value)
848
1851
# Convert the bytestring to hexadecimal notation
849
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1852
hex_fpr = binascii.hexlify(fpr).upper()
850
1853
return hex_fpr
851
1854
852
1855
853
class ForkingMixInWithPipe(SocketServer.ForkingMixIn, object):
854
"""Like SocketServer.ForkingMixIn, but also pass a pipe.
1856
class MultiprocessingMixIn(object):
1857
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1858
def sub_process_main(self, request, address):
1859
try:
1860
self.finish_request(request, address)
1861
except Exception:
1862
self.handle_error(request, address)
1863
self.close_request(request)
855
1864
856
Assumes a gobject.MainLoop event loop.
857
"""
1865
def process_request(self, request, address):
1866
"""Start a new process to process the request."""
1867
proc = multiprocessing.Process(target = self.sub_process_main,
1868
args = (request, address))
1869
proc.start()
1870
return proc
1871
1872
1873
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1874
""" adds a pipe to the MixIn """
858
1875
def process_request(self, request, client_address):
859
1876
"""Overrides and wraps the original process_request().
860
1877
861
This function creates a new pipe in self.pipe
1878
This function creates a new pipe in self.pipe
862
1879
"""
863
self.pipe = os.pipe()
864
super(ForkingMixInWithPipe,
865
self).process_request(request, client_address)
866
os.close(self.pipe[1]) # close write end
867
# Call "handle_ipc" for both data and EOF events
868
gobject.io_add_watch(self.pipe[0],
869
gobject.IO_IN | gobject.IO_HUP,
870
self.handle_ipc)
871
def handle_ipc(source, condition):
1880
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1881
1882
proc = MultiprocessingMixIn.process_request(self, request,
1883
client_address)
1884
self.child_pipe.close()
1885
self.add_pipe(parent_pipe, proc)
1886
1887
def add_pipe(self, parent_pipe, proc):
872
1888
"""Dummy function; override as necessary"""
873
os.close(source)
874
return False
875
876
877
class IPv6_TCPServer(ForkingMixInWithPipe,
878
SocketServer.TCPServer, object):
1889
raise NotImplementedError
1890
1891
1892
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1893
socketserver.TCPServer, object):
879
1894
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
880
1895
881
1896
Attributes:
882
1897
enabled: Boolean; whether this server is activated yet
883
1898
interface: None or a network interface name (string)
884
1899
use_ipv6: Boolean; to use IPv6 or not
885
----
886
clients: Set() of Client objects
887
gnutls_priority GnuTLS priority string
888
use_dbus: Boolean; to emit D-Bus signals or not
889
1900
"""
890
1901
def __init__(self, server_address, RequestHandlerClass,
891
interface=None, use_ipv6=True, clients=None,
892
gnutls_priority=None, use_dbus=True):
893
self.enabled = False
1902
interface=None, use_ipv6=True, socketfd=None):
1903
"""If socketfd is set, use that file descriptor instead of
1904
creating a new one with socket.socket().
1905
"""
894
1906
self.interface = interface
895
1907
if use_ipv6:
896
1908
self.address_family = socket.AF_INET6
897
self.clients = clients
898
self.use_dbus = use_dbus
899
self.gnutls_priority = gnutls_priority
900
SocketServer.TCPServer.__init__(self, server_address,
1909
if socketfd is not None:
1910
# Save the file descriptor
1911
self.socketfd = socketfd
1912
# Save the original socket.socket() function
1913
self.socket_socket = socket.socket
1914
# To implement --socket, we monkey patch socket.socket.
1915
#
1916
# (When socketserver.TCPServer is a new-style class, we
1917
# could make self.socket into a property instead of monkey
1918
# patching socket.socket.)
1919
#
1920
# Create a one-time-only replacement for socket.socket()
1921
@functools.wraps(socket.socket)
1922
def socket_wrapper(*args, **kwargs):
1923
# Restore original function so subsequent calls are
1924
# not affected.
1925
socket.socket = self.socket_socket
1926
del self.socket_socket
1927
# This time only, return a new socket object from the
1928
# saved file descriptor.
1929
return socket.fromfd(self.socketfd, *args, **kwargs)
1930
# Replace socket.socket() function with wrapper
1931
socket.socket = socket_wrapper
1932
# The socketserver.TCPServer.__init__ will call
1933
# socket.socket(), which might be our replacement,
1934
# socket_wrapper(), if socketfd was set.
1935
socketserver.TCPServer.__init__(self, server_address,
901
1936
RequestHandlerClass)
1937
902
1938
def server_bind(self):
903
1939
"""This overrides the normal server_bind() function
904
1940
to bind to an interface if one was specified, and also NOT to
905
1941
bind to an address or port if they were not specified."""
906
1942
if self.interface is not None:
907
try:
908
self.socket.setsockopt(socket.SOL_SOCKET,
909
SO_BINDTODEVICE,
910
str(self.interface + u'\0'))
911
except socket.error, error:
912
if error[0] == errno.EPERM:
913
logger.error(u"No permission to"
914
u" bind to interface %s",
915
self.interface)
916
else:
917
raise
1943
if SO_BINDTODEVICE is None:
1944
logger.error("SO_BINDTODEVICE does not exist;"
1945
" cannot bind to interface %s",
1946
self.interface)
1947
else:
1948
try:
1949
self.socket.setsockopt(socket.SOL_SOCKET,
1950
SO_BINDTODEVICE,
1951
str(self.interface
1952
+ '\0'))
1953
except socket.error as error:
1954
if error.errno == errno.EPERM:
1955
logger.error("No permission to"
1956
" bind to interface %s",
1957
self.interface)
1958
elif error.errno == errno.ENOPROTOOPT:
1959
logger.error("SO_BINDTODEVICE not available;"
1960
" cannot bind to interface %s",
1961
self.interface)
1962
elif error.errno == errno.ENODEV:
1963
logger.error("Interface %s does not"
1964
" exist, cannot bind",
1965
self.interface)
1966
else:
1967
raise
918
1968
# Only bind(2) the socket if we really need to.
919
1969
if self.server_address[0] or self.server_address[1]:
920
1970
if not self.server_address[0]:
921
1971
if self.address_family == socket.AF_INET6:
922
any_address = u"::" # in6addr_any
1972
any_address = "::" # in6addr_any
923
1973
else:
924
1974
any_address = socket.INADDR_ANY
925
1975
self.server_address = (any_address,
933
1983
# 0, # flowinfo
934
1984
# if_nametoindex
935
1985
# (self.interface))
936
return SocketServer.TCPServer.server_bind(self)
1986
return socketserver.TCPServer.server_bind(self)
1987
1988
1989
class MandosServer(IPv6_TCPServer):
1990
"""Mandos server.
1991
1992
Attributes:
1993
clients: set of Client objects
1994
gnutls_priority GnuTLS priority string
1995
use_dbus: Boolean; to emit D-Bus signals or not
1996
1997
Assumes a gobject.MainLoop event loop.
1998
"""
1999
def __init__(self, server_address, RequestHandlerClass,
2000
interface=None, use_ipv6=True, clients=None,
2001
gnutls_priority=None, use_dbus=True, socketfd=None):
2002
self.enabled = False
2003
self.clients = clients
2004
if self.clients is None:
2005
self.clients = {}
2006
self.use_dbus = use_dbus
2007
self.gnutls_priority = gnutls_priority
2008
IPv6_TCPServer.__init__(self, server_address,
2009
RequestHandlerClass,
2010
interface = interface,
2011
use_ipv6 = use_ipv6,
2012
socketfd = socketfd)
937
2013
def server_activate(self):
938
2014
if self.enabled:
939
return SocketServer.TCPServer.server_activate(self)
2015
return socketserver.TCPServer.server_activate(self)
2016
940
2017
def enable(self):
941
2018
self.enabled = True
942
def handle_ipc(self, source, condition, file_objects={}):
943
condition_names = {
944
gobject.IO_IN: u"IN", # There is data to read.
945
gobject.IO_OUT: u"OUT", # Data can be written (without
946
# blocking).
947
gobject.IO_PRI: u"PRI", # There is urgent data to read.
948
gobject.IO_ERR: u"ERR", # Error condition.
949
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
950
# broken, usually for pipes and
951
# sockets).
952
}
953
conditions_string = ' | '.join(name
954
for cond, name in
955
condition_names.iteritems()
956
if cond & condition)
957
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
958
conditions_string)
959
960
# Turn the pipe file descriptor into a Python file object
961
if source not in file_objects:
962
file_objects[source] = os.fdopen(source, u"r", 1)
963
964
# Read a line from the file object
965
cmdline = file_objects[source].readline()
966
if not cmdline: # Empty line means end of file
967
# close the IPC pipe
968
file_objects[source].close()
969
del file_objects[source]
970
971
# Stop calling this function
972
return False
973
974
logger.debug(u"IPC command: %r", cmdline)
975
976
# Parse and act on command
977
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
978
979
if cmd == u"NOTFOUND":
980
logger.warning(u"Client not found for fingerprint: %s",
981
args)
982
if self.use_dbus:
983
# Emit D-Bus signal
984
mandos_dbus_service.ClientNotFound(args)
985
elif cmd == u"INVALID":
986
for client in self.clients:
987
if client.name == args:
988
logger.warning(u"Client %s is invalid", args)
989
if self.use_dbus:
990
# Emit D-Bus signal
991
client.Rejected()
992
break
993
else:
994
logger.error(u"Unknown client %s is invalid", args)
995
elif cmd == u"SENDING":
996
for client in self.clients:
997
if client.name == args:
998
logger.info(u"Sending secret to %s", client.name)
999
client.checked_ok()
1000
if self.use_dbus:
1001
# Emit D-Bus signal
1002
client.ReceivedSecret()
1003
break
1004
else:
1005
logger.error(u"Sending secret to unknown client %s",
1006
args)
1007
else:
1008
logger.error(u"Unknown IPC command: %r", cmdline)
1009
1010
# Keep calling this function
2019
2020
def add_pipe(self, parent_pipe, proc):
2021
# Call "handle_ipc" for both data and EOF events
2022
gobject.io_add_watch(parent_pipe.fileno(),
2023
gobject.IO_IN | gobject.IO_HUP,
2024
functools.partial(self.handle_ipc,
2025
parent_pipe =
2026
parent_pipe,
2027
proc = proc))
2028
2029
def handle_ipc(self, source, condition, parent_pipe=None,
2030
proc = None, client_object=None):
2031
# error, or the other end of multiprocessing.Pipe has closed
2032
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2033
# Wait for other process to exit
2034
proc.join()
2035
return False
2036
2037
# Read a request from the child
2038
request = parent_pipe.recv()
2039
command = request[0]
2040
2041
if command == 'init':
2042
fpr = request[1]
2043
address = request[2]
2044
2045
for c in self.clients.itervalues():
2046
if c.fingerprint == fpr:
2047
client = c
2048
break
2049
else:
2050
logger.info("Client not found for fingerprint: %s, ad"
2051
"dress: %s", fpr, address)
2052
if self.use_dbus:
2053
# Emit D-Bus signal
2054
mandos_dbus_service.ClientNotFound(fpr,
2055
address[0])
2056
parent_pipe.send(False)
2057
return False
2058
2059
gobject.io_add_watch(parent_pipe.fileno(),
2060
gobject.IO_IN | gobject.IO_HUP,
2061
functools.partial(self.handle_ipc,
2062
parent_pipe =
2063
parent_pipe,
2064
proc = proc,
2065
client_object =
2066
client))
2067
parent_pipe.send(True)
2068
# remove the old hook in favor of the new above hook on
2069
# same fileno
2070
return False
2071
if command == 'funcall':
2072
funcname = request[1]
2073
args = request[2]
2074
kwargs = request[3]
2075
2076
parent_pipe.send(('data', getattr(client_object,
2077
funcname)(*args,
2078
**kwargs)))
2079
2080
if command == 'getattr':
2081
attrname = request[1]
2082
if callable(client_object.__getattribute__(attrname)):
2083
parent_pipe.send(('function',))
2084
else:
2085
parent_pipe.send(('data', client_object
2086
.__getattribute__(attrname)))
2087
2088
if command == 'setattr':
2089
attrname = request[1]
2090
value = request[2]
2091
setattr(client_object, attrname, value)
2092
1011
2093
return True
1012
2094
1013
2095
1014
2096
def string_to_delta(interval):
1015
2097
"""Parse a string and return a datetime.timedelta
1016
2098
1017
>>> string_to_delta(u'7d')
2099
>>> string_to_delta('7d')
1018
2100
datetime.timedelta(7)
1019
>>> string_to_delta(u'60s')
2101
>>> string_to_delta('60s')
1020
2102
datetime.timedelta(0, 60)
1021
>>> string_to_delta(u'60m')
2103
>>> string_to_delta('60m')
1022
2104
datetime.timedelta(0, 3600)
1023
>>> string_to_delta(u'24h')
2105
>>> string_to_delta('24h')
1024
2106
datetime.timedelta(1)
1025
>>> string_to_delta(u'1w')
2107
>>> string_to_delta('1w')
1026
2108
datetime.timedelta(7)
1027
>>> string_to_delta(u'5m 30s')
2109
>>> string_to_delta('5m 30s')
1028
2110
datetime.timedelta(0, 330)
1029
2111
"""
1030
2112
timevalue = datetime.timedelta(0)
1032
2114
try:
1033
2115
suffix = unicode(s[-1])
1034
2116
value = int(s[:-1])
1035
if suffix == u"d":
2117
if suffix == "d":
1036
2118
delta = datetime.timedelta(value)
1037
elif suffix == u"s":
2119
elif suffix == "s":
1038
2120
delta = datetime.timedelta(0, value)
1039
elif suffix == u"m":
2121
elif suffix == "m":
1040
2122
delta = datetime.timedelta(0, 0, 0, 0, value)
1041
elif suffix == u"h":
2123
elif suffix == "h":
1042
2124
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1043
elif suffix == u"w":
2125
elif suffix == "w":
1044
2126
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1045
2127
else:
1046
raise ValueError
1047
except (ValueError, IndexError):
1048
raise ValueError
2128
raise ValueError("Unknown suffix {0!r}"
2129
.format(suffix))
2130
except (ValueError, IndexError) as e:
2131
raise ValueError(*(e.args))
1049
2132
timevalue += delta
1050
2133
return timevalue
1051
2134
1052
2135
1053
def server_state_changed(state):
1054
"""Derived from the Avahi example code"""
1055
if state == avahi.SERVER_COLLISION:
1056
logger.error(u"Zeroconf server name collision")
1057
service.remove()
1058
elif state == avahi.SERVER_RUNNING:
1059
service.add()
1060
1061
1062
def entry_group_state_changed(state, error):
1063
"""Derived from the Avahi example code"""
1064
logger.debug(u"Avahi state change: %i", state)
1065
1066
if state == avahi.ENTRY_GROUP_ESTABLISHED:
1067
logger.debug(u"Zeroconf service established.")
1068
elif state == avahi.ENTRY_GROUP_COLLISION:
1069
logger.warning(u"Zeroconf service name collision.")
1070
service.rename()
1071
elif state == avahi.ENTRY_GROUP_FAILURE:
1072
logger.critical(u"Avahi: Error in group state changed %s",
1073
unicode(error))
1074
raise AvahiGroupError(u"State changed: %s" % unicode(error))
1075
1076
def if_nametoindex(interface):
1077
"""Call the C function if_nametoindex(), or equivalent
1078
1079
Note: This function cannot accept a unicode string."""
1080
global if_nametoindex
1081
try:
1082
if_nametoindex = (ctypes.cdll.LoadLibrary
1083
(ctypes.util.find_library(u"c"))
1084
.if_nametoindex)
1085
except (OSError, AttributeError):
1086
logger.warning(u"Doing if_nametoindex the hard way")
1087
def if_nametoindex(interface):
1088
"Get an interface index the hard way, i.e. using fcntl()"
1089
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1090
with closing(socket.socket()) as s:
1091
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1092
struct.pack(str(u"16s16x"),
1093
interface))
1094
interface_index = struct.unpack(str(u"I"),
1095
ifreq[16:20])[0]
1096
return interface_index
1097
return if_nametoindex(interface)
1098
1099
1100
2136
def daemon(nochdir = False, noclose = False):
1101
2137
"""See daemon(3). Standard BSD Unix function.
1102
2138
1105
2141
sys.exit()
1106
2142
os.setsid()
1107
2143
if not nochdir:
1108
os.chdir(u"/")
2144
os.chdir("/")
1109
2145
if os.fork():
1110
2146
sys.exit()
1111
2147
if not noclose:
1112
2148
# Close all standard open file descriptors
1113
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2149
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1114
2150
if not stat.S_ISCHR(os.fstat(null).st_mode):
1115
2151
raise OSError(errno.ENODEV,
1116
u"/dev/null not a character device")
2152
"{0} not a character device"
2153
.format(os.devnull))
1117
2154
os.dup2(null, sys.stdin.fileno())
1118
2155
os.dup2(null, sys.stdout.fileno())
1119
2156
os.dup2(null, sys.stderr.fileno())
1123
2160
1124
2161
def main():
1125
2162
1126
######################################################################
2163
##################################################################
1127
2164
# Parsing of options, both command line and config file
1128
2165
1129
parser = optparse.OptionParser(version = "%%prog %s" % version)
1130
parser.add_option("-i", u"--interface", type=u"string",
1131
metavar="IF", help=u"Bind to interface IF")
1132
parser.add_option("-a", u"--address", type=u"string",
1133
help=u"Address to listen for requests on")
1134
parser.add_option("-p", u"--port", type=u"int",
1135
help=u"Port number to receive requests on")
1136
parser.add_option("--check", action=u"store_true",
1137
help=u"Run self-test")
1138
parser.add_option("--debug", action=u"store_true",
1139
help=u"Debug mode; run in foreground and log to"
1140
u" terminal")
1141
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1142
u" priority string (see GnuTLS documentation)")
1143
parser.add_option("--servicename", type=u"string",
1144
metavar=u"NAME", help=u"Zeroconf service name")
1145
parser.add_option("--configdir", type=u"string",
1146
default=u"/etc/mandos", metavar=u"DIR",
1147
help=u"Directory to search for configuration"
1148
u" files")
1149
parser.add_option("--no-dbus", action=u"store_false",
1150
dest=u"use_dbus", help=u"Do not provide D-Bus"
1151
u" system bus interface")
1152
parser.add_option("--no-ipv6", action=u"store_false",
1153
dest=u"use_ipv6", help=u"Do not use IPv6")
1154
options = parser.parse_args()[0]
2166
parser = argparse.ArgumentParser()
2167
parser.add_argument("-v", "--version", action="version",
2168
version = "%(prog)s {0}".format(version),
2169
help="show version number and exit")
2170
parser.add_argument("-i", "--interface", metavar="IF",
2171
help="Bind to interface IF")
2172
parser.add_argument("-a", "--address",
2173
help="Address to listen for requests on")
2174
parser.add_argument("-p", "--port", type=int,
2175
help="Port number to receive requests on")
2176
parser.add_argument("--check", action="store_true",
2177
help="Run self-test")
2178
parser.add_argument("--debug", action="store_true",
2179
help="Debug mode; run in foreground and log"
2180
" to terminal")
2181
parser.add_argument("--debuglevel", metavar="LEVEL",
2182
help="Debug level for stdout output")
2183
parser.add_argument("--priority", help="GnuTLS"
2184
" priority string (see GnuTLS documentation)")
2185
parser.add_argument("--servicename",
2186
metavar="NAME", help="Zeroconf service name")
2187
parser.add_argument("--configdir",
2188
default="/etc/mandos", metavar="DIR",
2189
help="Directory to search for configuration"
2190
" files")
2191
parser.add_argument("--no-dbus", action="store_false",
2192
dest="use_dbus", help="Do not provide D-Bus"
2193
" system bus interface")
2194
parser.add_argument("--no-ipv6", action="store_false",
2195
dest="use_ipv6", help="Do not use IPv6")
2196
parser.add_argument("--no-restore", action="store_false",
2197
dest="restore", help="Do not restore stored"
2198
" state")
2199
parser.add_argument("--socket", type=int,
2200
help="Specify a file descriptor to a network"
2201
" socket to use instead of creating one")
2202
parser.add_argument("--statedir", metavar="DIR",
2203
help="Directory to save/restore state in")
2204
2205
options = parser.parse_args()
1155
2206
1156
2207
if options.check:
1157
2208
import doctest
1159
2210
sys.exit()
1160
2211
1161
2212
# Default values for config file for server-global settings
1162
server_defaults = { u"interface": u"",
1163
u"address": u"",
1164
u"port": u"",
1165
u"debug": u"False",
1166
u"priority":
1167
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1168
u"servicename": u"Mandos",
1169
u"use_dbus": u"True",
1170
u"use_ipv6": u"True",
2213
server_defaults = { "interface": "",
2214
"address": "",
2215
"port": "",
2216
"debug": "False",
2217
"priority":
2218
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2219
"servicename": "Mandos",
2220
"use_dbus": "True",
2221
"use_ipv6": "True",
2222
"debuglevel": "",
2223
"restore": "True",
2224
"socket": "",
2225
"statedir": "/var/lib/mandos"
1171
2226
}
1172
2227
1173
2228
# Parse config file for server-global settings
1174
server_config = ConfigParser.SafeConfigParser(server_defaults)
2229
server_config = configparser.SafeConfigParser(server_defaults)
1175
2230
del server_defaults
1176
2231
server_config.read(os.path.join(options.configdir,
1177
u"mandos.conf"))
2232
"mandos.conf"))
1178
2233
# Convert the SafeConfigParser object to a dict
1179
2234
server_settings = server_config.defaults()
1180
2235
# Use the appropriate methods on the non-string config options
1181
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1182
server_settings[option] = server_config.getboolean(u"DEFAULT",
2236
for option in ("debug", "use_dbus", "use_ipv6"):
2237
server_settings[option] = server_config.getboolean("DEFAULT",
1183
2238
option)
1184
2239
if server_settings["port"]:
1185
server_settings["port"] = server_config.getint(u"DEFAULT",
1186
u"port")
2240
server_settings["port"] = server_config.getint("DEFAULT",
2241
"port")
2242
if server_settings["socket"]:
2243
server_settings["socket"] = server_config.getint("DEFAULT",
2244
"socket")
2245
# Later, stdin will, and stdout and stderr might, be dup'ed
2246
# over with an opened os.devnull. But we don't want this to
2247
# happen with a supplied network socket.
2248
if 0 <= server_settings["socket"] <= 2:
2249
server_settings["socket"] = os.dup(server_settings
2250
["socket"])
1187
2251
del server_config
1188
2252
1189
2253
# Override the settings from the config file with command line
1190
2254
# options, if set.
1191
for option in (u"interface", u"address", u"port", u"debug",
1192
u"priority", u"servicename", u"configdir",
1193
u"use_dbus", u"use_ipv6"):
2255
for option in ("interface", "address", "port", "debug",
2256
"priority", "servicename", "configdir",
2257
"use_dbus", "use_ipv6", "debuglevel", "restore",
2258
"statedir", "socket"):
1194
2259
value = getattr(options, option)
1195
2260
if value is not None:
1196
2261
server_settings[option] = value
1204
2269
##################################################################
1205
2270
1206
2271
# For convenience
1207
debug = server_settings[u"debug"]
1208
use_dbus = server_settings[u"use_dbus"]
1209
use_ipv6 = server_settings[u"use_ipv6"]
1210
1211
if not debug:
1212
syslogger.setLevel(logging.WARNING)
1213
console.setLevel(logging.WARNING)
1214
1215
if server_settings[u"servicename"] != u"Mandos":
2272
debug = server_settings["debug"]
2273
debuglevel = server_settings["debuglevel"]
2274
use_dbus = server_settings["use_dbus"]
2275
use_ipv6 = server_settings["use_ipv6"]
2276
stored_state_path = os.path.join(server_settings["statedir"],
2277
stored_state_file)
2278
2279
if debug:
2280
initlogger(debug, logging.DEBUG)
2281
else:
2282
if not debuglevel:
2283
initlogger(debug)
2284
else:
2285
level = getattr(logging, debuglevel.upper())
2286
initlogger(debug, level)
2287
2288
if server_settings["servicename"] != "Mandos":
1216
2289
syslogger.setFormatter(logging.Formatter
1217
(u'Mandos (%s) [%%(process)d]:'
1218
u' %%(levelname)s: %%(message)s'
1219
% server_settings[u"servicename"]))
2290
('Mandos ({0}) [%(process)d]:'
2291
' %(levelname)s: %(message)s'
2292
.format(server_settings
2293
["servicename"])))
1220
2294
1221
2295
# Parse config file with clients
1222
client_defaults = { u"timeout": u"1h",
1223
u"interval": u"5m",
1224
u"checker": u"fping -q -- %%(host)s",
1225
u"host": u"",
1226
}
1227
client_config = ConfigParser.SafeConfigParser(client_defaults)
1228
client_config.read(os.path.join(server_settings[u"configdir"],
1229
u"clients.conf"))
2296
client_config = configparser.SafeConfigParser(Client
2297
.client_defaults)
2298
client_config.read(os.path.join(server_settings["configdir"],
2299
"clients.conf"))
1230
2300
1231
2301
global mandos_dbus_service
1232
2302
mandos_dbus_service = None
1233
2303
1234
clients = Set()
1235
tcp_server = IPv6_TCPServer((server_settings[u"address"],
1236
server_settings[u"port"]),
1237
ClientHandler,
1238
interface=
1239
server_settings[u"interface"],
1240
use_ipv6=use_ipv6,
1241
clients=clients,
1242
gnutls_priority=
1243
server_settings[u"priority"],
1244
use_dbus=use_dbus)
1245
pidfilename = u"/var/run/mandos.pid"
1246
try:
1247
pidfile = open(pidfilename, u"w")
1248
except IOError:
1249
logger.error(u"Could not open file %r", pidfilename)
2304
tcp_server = MandosServer((server_settings["address"],
2305
server_settings["port"]),
2306
ClientHandler,
2307
interface=(server_settings["interface"]
2308
or None),
2309
use_ipv6=use_ipv6,
2310
gnutls_priority=
2311
server_settings["priority"],
2312
use_dbus=use_dbus,
2313
socketfd=(server_settings["socket"]
2314
or None))
2315
if not debug:
2316
pidfilename = "/var/run/mandos.pid"
2317
try:
2318
pidfile = open(pidfilename, "w")
2319
except IOError as e:
2320
logger.error("Could not open file %r", pidfilename,
2321
exc_info=e)
1250
2322
1251
try:
1252
uid = pwd.getpwnam(u"_mandos").pw_uid
1253
gid = pwd.getpwnam(u"_mandos").pw_gid
1254
except KeyError:
2323
for name in ("_mandos", "mandos", "nobody"):
1255
2324
try:
1256
uid = pwd.getpwnam(u"mandos").pw_uid
1257
gid = pwd.getpwnam(u"mandos").pw_gid
2325
uid = pwd.getpwnam(name).pw_uid
2326
gid = pwd.getpwnam(name).pw_gid
2327
break
1258
2328
except KeyError:
1259
try:
1260
uid = pwd.getpwnam(u"nobody").pw_uid
1261
gid = pwd.getpwnam(u"nobody").pw_gid
1262
except KeyError:
1263
uid = 65534
1264
gid = 65534
2329
continue
2330
else:
2331
uid = 65534
2332
gid = 65534
1265
2333
try:
1266
2334
os.setgid(gid)
1267
2335
os.setuid(uid)
1268
except OSError, error:
1269
if error[0] != errno.EPERM:
2336
except OSError as error:
2337
if error.errno != errno.EPERM:
1270
2338
raise error
1271
2339
1272
# Enable all possible GnuTLS debugging
1273
2340
if debug:
2341
# Enable all possible GnuTLS debugging
2342
1274
2343
# "Use a log level over 10 to enable all debugging options."
1275
2344
# - GnuTLS manual
1276
2345
gnutls.library.functions.gnutls_global_set_log_level(11)
1277
2346
1278
2347
@gnutls.library.types.gnutls_log_func
1279
2348
def debug_gnutls(level, string):
1280
logger.debug(u"GnuTLS: %s", string[:-1])
2349
logger.debug("GnuTLS: %s", string[:-1])
1281
2350
1282
2351
(gnutls.library.functions
1283
2352
.gnutls_global_set_log_function(debug_gnutls))
1284
1285
global service
1286
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1287
service = AvahiService(name = server_settings[u"servicename"],
1288
servicetype = u"_mandos._tcp",
1289
protocol = protocol)
1290
if server_settings["interface"]:
1291
service.interface = (if_nametoindex
1292
(str(server_settings[u"interface"])))
2353
2354
# Redirect stdin so all checkers get /dev/null
2355
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2356
os.dup2(null, sys.stdin.fileno())
2357
if null > 2:
2358
os.close(null)
2359
2360
# Need to fork before connecting to D-Bus
2361
if not debug:
2362
# Close all input and output, do double fork, etc.
2363
daemon()
2364
2365
# multiprocessing will use threads, so before we use gobject we
2366
# need to inform gobject that threads will be used.
2367
gobject.threads_init()
1293
2368
1294
2369
global main_loop
1295
global bus
1296
global server
1297
2370
# From the Avahi example code
1298
DBusGMainLoop(set_as_default=True )
2371
DBusGMainLoop(set_as_default=True)
1299
2372
main_loop = gobject.MainLoop()
1300
2373
bus = dbus.SystemBus()
1301
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1302
avahi.DBUS_PATH_SERVER),
1303
avahi.DBUS_INTERFACE_SERVER)
1304
2374
# End of Avahi example code
1305
2375
if use_dbus:
1306
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2376
try:
2377
bus_name = dbus.service.BusName("se.recompile.Mandos",
2378
bus, do_not_queue=True)
2379
old_bus_name = (dbus.service.BusName
2380
("se.bsnet.fukt.Mandos", bus,
2381
do_not_queue=True))
2382
except dbus.exceptions.NameExistsException as e:
2383
logger.error("Disabling D-Bus:", exc_info=e)
2384
use_dbus = False
2385
server_settings["use_dbus"] = False
2386
tcp_server.use_dbus = False
2387
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2388
service = AvahiServiceToSyslog(name =
2389
server_settings["servicename"],
2390
servicetype = "_mandos._tcp",
2391
protocol = protocol, bus = bus)
2392
if server_settings["interface"]:
2393
service.interface = (if_nametoindex
2394
(str(server_settings["interface"])))
2395
2396
global multiprocessing_manager
2397
multiprocessing_manager = multiprocessing.Manager()
1307
2398
1308
2399
client_class = Client
1309
2400
if use_dbus:
1310
client_class = ClientDBus
1311
clients.update(Set(
1312
client_class(name = section,
1313
config= dict(client_config.items(section)))
1314
for section in client_config.sections()))
1315
if not clients:
1316
logger.warning(u"No clients defined")
1317
1318
if debug:
1319
# Redirect stdin so all checkers get /dev/null
1320
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1321
os.dup2(null, sys.stdin.fileno())
1322
if null > 2:
1323
os.close(null)
1324
else:
1325
# No console logging
1326
logger.removeHandler(console)
1327
# Close all input and output, do double fork, etc.
1328
daemon()
1329
1330
try:
1331
with closing(pidfile):
1332
pid = os.getpid()
1333
pidfile.write(str(pid) + "\n")
1334
del pidfile
1335
except IOError:
1336
logger.error(u"Could not write to file %r with PID %d",
1337
pidfilename, pid)
1338
except NameError:
1339
# "pidfile" was never created
1340
pass
1341
del pidfilename
1342
1343
def cleanup():
1344
"Cleanup function; run on exit"
1345
global group
1346
# From the Avahi example code
1347
if not group is None:
1348
group.Free()
1349
group = None
1350
# End of Avahi example code
1351
1352
while clients:
1353
client = clients.pop()
1354
client.disable_hook = None
1355
client.disable()
1356
1357
atexit.register(cleanup)
2401
client_class = functools.partial(ClientDBus, bus = bus)
2402
2403
client_settings = Client.config_parser(client_config)
2404
old_client_settings = {}
2405
clients_data = {}
2406
2407
# Get client data and settings from last running state.
2408
if server_settings["restore"]:
2409
try:
2410
with open(stored_state_path, "rb") as stored_state:
2411
clients_data, old_client_settings = (pickle.load
2412
(stored_state))
2413
os.remove(stored_state_path)
2414
except IOError as e:
2415
if e.errno == errno.ENOENT:
2416
logger.warning("Could not load persistent state: {0}"
2417
.format(os.strerror(e.errno)))
2418
else:
2419
logger.critical("Could not load persistent state:",
2420
exc_info=e)
2421
raise
2422
except EOFError as e:
2423
logger.warning("Could not load persistent state: "
2424
"EOFError:", exc_info=e)
2425
2426
with PGPEngine() as pgp:
2427
for client_name, client in clients_data.iteritems():
2428
# Decide which value to use after restoring saved state.
2429
# We have three different values: Old config file,
2430
# new config file, and saved state.
2431
# New config value takes precedence if it differs from old
2432
# config value, otherwise use saved state.
2433
for name, value in client_settings[client_name].items():
2434
try:
2435
# For each value in new config, check if it
2436
# differs from the old config value (Except for
2437
# the "secret" attribute)
2438
if (name != "secret" and
2439
value != old_client_settings[client_name]
2440
[name]):
2441
client[name] = value
2442
except KeyError:
2443
pass
2444
2445
# Clients who has passed its expire date can still be
2446
# enabled if its last checker was successful. Clients
2447
# whose checker succeeded before we stored its state is
2448
# assumed to have successfully run all checkers during
2449
# downtime.
2450
if client["enabled"]:
2451
if datetime.datetime.utcnow() >= client["expires"]:
2452
if not client["last_checked_ok"]:
2453
logger.warning(
2454
"disabling client {0} - Client never "
2455
"performed a successful checker"
2456
.format(client_name))
2457
client["enabled"] = False
2458
elif client["last_checker_status"] != 0:
2459
logger.warning(
2460
"disabling client {0} - Client "
2461
"last checker failed with error code {1}"
2462
.format(client_name,
2463
client["last_checker_status"]))
2464
client["enabled"] = False
2465
else:
2466
client["expires"] = (datetime.datetime
2467
.utcnow()
2468
+ client["timeout"])
2469
logger.debug("Last checker succeeded,"
2470
" keeping {0} enabled"
2471
.format(client_name))
2472
try:
2473
client["secret"] = (
2474
pgp.decrypt(client["encrypted_secret"],
2475
client_settings[client_name]
2476
["secret"]))
2477
except PGPError:
2478
# If decryption fails, we use secret from new settings
2479
logger.debug("Failed to decrypt {0} old secret"
2480
.format(client_name))
2481
client["secret"] = (
2482
client_settings[client_name]["secret"])
2483
2484
# Add/remove clients based on new changes made to config
2485
for client_name in (set(old_client_settings)
2486
- set(client_settings)):
2487
del clients_data[client_name]
2488
for client_name in (set(client_settings)
2489
- set(old_client_settings)):
2490
clients_data[client_name] = client_settings[client_name]
2491
2492
# Create all client objects
2493
for client_name, client in clients_data.iteritems():
2494
tcp_server.clients[client_name] = client_class(
2495
name = client_name, settings = client)
2496
2497
if not tcp_server.clients:
2498
logger.warning("No clients defined")
1358
2499
1359
2500
if not debug:
1360
signal.signal(signal.SIGINT, signal.SIG_IGN)
2501
try:
2502
with pidfile:
2503
pid = os.getpid()
2504
pidfile.write(str(pid) + "\n".encode("utf-8"))
2505
del pidfile
2506
except IOError:
2507
logger.error("Could not write to file %r with PID %d",
2508
pidfilename, pid)
2509
except NameError:
2510
# "pidfile" was never created
2511
pass
2512
del pidfilename
2513
1361
2514
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1362
2515
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1363
2516
1364
2517
if use_dbus:
1365
class MandosDBusService(dbus.service.Object):
2518
@alternate_dbus_interfaces({"se.recompile.Mandos":
2519
"se.bsnet.fukt.Mandos"})
2520
class MandosDBusService(DBusObjectWithProperties):
1366
2521
"""A D-Bus proxy object"""
1367
2522
def __init__(self):
1368
dbus.service.Object.__init__(self, bus, u"/")
1369
_interface = u"se.bsnet.fukt.Mandos"
1370
1371
@dbus.service.signal(_interface, signature=u"oa{sv}")
1372
def ClientAdded(self, objpath, properties):
1373
"D-Bus signal"
1374
pass
1375
1376
@dbus.service.signal(_interface, signature=u"s")
1377
def ClientNotFound(self, fingerprint):
1378
"D-Bus signal"
1379
pass
1380
1381
@dbus.service.signal(_interface, signature=u"os")
2523
dbus.service.Object.__init__(self, bus, "/")
2524
_interface = "se.recompile.Mandos"
2525
2526
@dbus_interface_annotations(_interface)
2527
def _foo(self):
2528
return { "org.freedesktop.DBus.Property"
2529
".EmitsChangedSignal":
2530
"false"}
2531
2532
@dbus.service.signal(_interface, signature="o")
2533
def ClientAdded(self, objpath):
2534
"D-Bus signal"
2535
pass
2536
2537
@dbus.service.signal(_interface, signature="ss")
2538
def ClientNotFound(self, fingerprint, address):
2539
"D-Bus signal"
2540
pass
2541
2542
@dbus.service.signal(_interface, signature="os")
1382
2543
def ClientRemoved(self, objpath, name):
1383
2544
"D-Bus signal"
1384
2545
pass
1385
2546
1386
@dbus.service.method(_interface, out_signature=u"ao")
2547
@dbus.service.method(_interface, out_signature="ao")
1387
2548
def GetAllClients(self):
1388
2549
"D-Bus method"
1389
return dbus.Array(c.dbus_object_path for c in clients)
2550
return dbus.Array(c.dbus_object_path
2551
for c in
2552
tcp_server.clients.itervalues())
1390
2553
1391
2554
@dbus.service.method(_interface,
1392
out_signature=u"a{oa{sv}}")
2555
out_signature="a{oa{sv}}")
1393
2556
def GetAllClientsWithProperties(self):
1394
2557
"D-Bus method"
1395
2558
return dbus.Dictionary(
1396
((c.dbus_object_path, c.GetAllProperties())
1397
for c in clients),
1398
signature=u"oa{sv}")
2559
((c.dbus_object_path, c.GetAll(""))
2560
for c in tcp_server.clients.itervalues()),
2561
signature="oa{sv}")
1399
2562
1400
@dbus.service.method(_interface, in_signature=u"o")
2563
@dbus.service.method(_interface, in_signature="o")
1401
2564
def RemoveClient(self, object_path):
1402
2565
"D-Bus method"
1403
for c in clients:
2566
for c in tcp_server.clients.itervalues():
1404
2567
if c.dbus_object_path == object_path:
1405
clients.remove(c)
2568
del tcp_server.clients[c.name]
1406
2569
c.remove_from_connection()
1407
2570
# Don't signal anything except ClientRemoved
1408
c.disable(signal=False)
2571
c.disable(quiet=True)
1409
2572
# Emit D-Bus signal
1410
2573
self.ClientRemoved(object_path, c.name)
1411
2574
return
1412
raise KeyError
2575
raise KeyError(object_path)
1413
2576
1414
2577
del _interface
1415
2578
1416
2579
mandos_dbus_service = MandosDBusService()
1417
2580
1418
for client in clients:
2581
def cleanup():
2582
"Cleanup function; run on exit"
2583
service.cleanup()
2584
2585
multiprocessing.active_children()
2586
if not (tcp_server.clients or client_settings):
2587
return
2588
2589
# Store client before exiting. Secrets are encrypted with key
2590
# based on what config file has. If config file is
2591
# removed/edited, old secret will thus be unrecovable.
2592
clients = {}
2593
with PGPEngine() as pgp:
2594
for client in tcp_server.clients.itervalues():
2595
key = client_settings[client.name]["secret"]
2596
client.encrypted_secret = pgp.encrypt(client.secret,
2597
key)
2598
client_dict = {}
2599
2600
# A list of attributes that can not be pickled
2601
# + secret.
2602
exclude = set(("bus", "changedstate", "secret",
2603
"checker"))
2604
for name, typ in (inspect.getmembers
2605
(dbus.service.Object)):
2606
exclude.add(name)
2607
2608
client_dict["encrypted_secret"] = (client
2609
.encrypted_secret)
2610
for attr in client.client_structure:
2611
if attr not in exclude:
2612
client_dict[attr] = getattr(client, attr)
2613
2614
clients[client.name] = client_dict
2615
del client_settings[client.name]["secret"]
2616
2617
try:
2618
with (tempfile.NamedTemporaryFile
2619
(mode='wb', suffix=".pickle", prefix='clients-',
2620
dir=os.path.dirname(stored_state_path),
2621
delete=False)) as stored_state:
2622
pickle.dump((clients, client_settings), stored_state)
2623
tempname=stored_state.name
2624
os.rename(tempname, stored_state_path)
2625
except (IOError, OSError) as e:
2626
if not debug:
2627
try:
2628
os.remove(tempname)
2629
except NameError:
2630
pass
2631
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2632
logger.warning("Could not save persistent state: {0}"
2633
.format(os.strerror(e.errno)))
2634
else:
2635
logger.warning("Could not save persistent state:",
2636
exc_info=e)
2637
raise e
2638
2639
# Delete all clients, and settings from config
2640
while tcp_server.clients:
2641
name, client = tcp_server.clients.popitem()
2642
if use_dbus:
2643
client.remove_from_connection()
2644
# Don't signal anything except ClientRemoved
2645
client.disable(quiet=True)
2646
if use_dbus:
2647
# Emit D-Bus signal
2648
mandos_dbus_service.ClientRemoved(client
2649
.dbus_object_path,
2650
client.name)
2651
client_settings.clear()
2652
2653
atexit.register(cleanup)
2654
2655
for client in tcp_server.clients.itervalues():
1419
2656
if use_dbus:
1420
2657
# Emit D-Bus signal
1421
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1422
client.GetAllProperties())
1423
client.enable()
2658
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2659
# Need to initiate checking of clients
2660
if client.enabled:
2661
client.init_checker()
1424
2662
1425
2663
tcp_server.enable()
1426
2664
tcp_server.server_activate()
1428
2666
# Find out what port we got
1429
2667
service.port = tcp_server.socket.getsockname()[1]
1430
2668
if use_ipv6:
1431
logger.info(u"Now listening on address %r, port %d,"
1432
" flowinfo %d, scope_id %d"
1433
% tcp_server.socket.getsockname())
2669
logger.info("Now listening on address %r, port %d,"
2670
" flowinfo %d, scope_id %d",
2671
*tcp_server.socket.getsockname())
1434
2672
else: # IPv4
1435
logger.info(u"Now listening on address %r, port %d"
1436
% tcp_server.socket.getsockname())
2673
logger.info("Now listening on address %r, port %d",
2674
*tcp_server.socket.getsockname())
1437
2675
1438
2676
#service.interface = tcp_server.socket.getsockname()[3]
1439
2677
1440
2678
try:
1441
2679
# From the Avahi example code
1442
server.connect_to_signal(u"StateChanged", server_state_changed)
1443
2680
try:
1444
server_state_changed(server.GetState())
1445
except dbus.exceptions.DBusException, error:
1446
logger.critical(u"DBusException: %s", error)
2681
service.activate()
2682
except dbus.exceptions.DBusException as error:
2683
logger.critical("D-Bus Exception", exc_info=error)
2684
cleanup()
1447
2685
sys.exit(1)
1448
2686
# End of Avahi example code
1449
2687
1452
2690
(tcp_server.handle_request
1453
2691
(*args[2:], **kwargs) or True))
1454
2692
1455
logger.debug(u"Starting main loop")
2693
logger.debug("Starting main loop")
1456
2694
main_loop.run()
1457
except AvahiError, error:
1458
logger.critical(u"AvahiError: %s", error)
2695
except AvahiError as error:
2696
logger.critical("Avahi Error", exc_info=error)
2697
cleanup()
1459
2698
sys.exit(1)
1460
2699
except KeyboardInterrupt:
1461
2700
if debug:
1462
print >> sys.stderr
1463
logger.debug(u"Server received KeyboardInterrupt")
1464
logger.debug(u"Server exiting")
2701
print("", file=sys.stderr)
2702
logger.debug("Server received KeyboardInterrupt")
2703
logger.debug("Server exiting")
2704
# Must run before the D-Bus bus name gets deregistered
2705
cleanup()
1465
2706
1466
2707
if __name__ == '__main__':
1467
2708
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0