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- Committer: Teddy Hogeborn
- Date: 2009-11-19 18:31:28 UTC
- Revision ID: teddy@fukt.bsnet.se-20091119183128-ttstewh61xmtnil1
* Makefile (LINK_FORTIFY_LD): Bug fix: removed "-fPIE".
* mandos-keygen: Bug fix: Fix quoting for the "--password" option.
* mandos-keygen: Bug fix: Fix quoting for the "--password" option.
- files removed:
- DBUS-API
- debian/source
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
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13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
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# Copyright © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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16
#
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# This program is free software: you can redistribute it and/or modify
18
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# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
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# <http://www.gnu.org/licenses/>.
30
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#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
34
from __future__ import division, with_statement, absolute_import
36
35
37
36
import SocketServer as socketserver
38
37
import socket
39
import argparse
38
import optparse
40
39
import datetime
41
40
import errno
42
41
import gnutls.crypto
56
55
import logging
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56
import logging.handlers
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57
import pwd
59
import contextlib
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from contextlib import closing
60
59
import struct
61
60
import fcntl
62
61
import functools
63
import cPickle as pickle
64
import multiprocessing
65
import types
66
import binascii
67
import tempfile
68
62
69
63
import dbus
70
64
import dbus.service
75
69
import ctypes.util
76
70
import xml.dom.minidom
77
71
import inspect
78
import GnuPGInterface
79
72
80
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try:
81
74
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
78
except ImportError:
86
79
SO_BINDTODEVICE = None
87
80
88
version = "1.4.1"
89
stored_state_file = "clients.pickle"
90
91
logger = logging.getLogger()
81
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version = "1.0.14"
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84
logger = logging.Logger(u'mandos')
92
85
syslogger = (logging.handlers.SysLogHandler
93
86
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
95
96
try:
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
100
except (OSError, AttributeError):
101
def if_nametoindex(interface):
102
"Get an interface index the hard way, i.e. using fcntl()"
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
with contextlib.closing(socket.socket()) as s:
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
110
return interface_index
111
112
113
def initlogger(debug, level=logging.WARNING):
114
"""init logger and add loglevel"""
115
116
syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
118
' %(message)s'))
119
logger.addHandler(syslogger)
120
121
if debug:
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
128
logger.setLevel(level)
129
130
131
class PGPError(Exception):
132
"""Exception if encryption/decryption fails"""
133
pass
134
135
136
class PGPEngine(object):
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
138
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
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self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet',
146
'--no-use-agent'])
147
148
def __enter__(self):
149
return self
150
151
def __exit__ (self, exc_type, exc_value, traceback):
152
self._cleanup()
153
return False
154
155
def __del__(self):
156
self._cleanup()
157
158
def _cleanup(self):
159
if self.tempdir is not None:
160
# Delete contents of tempdir
161
for root, dirs, files in os.walk(self.tempdir,
162
topdown = False):
163
for filename in files:
164
os.remove(os.path.join(root, filename))
165
for dirname in dirs:
166
os.rmdir(os.path.join(root, dirname))
167
# Remove tempdir
168
os.rmdir(self.tempdir)
169
self.tempdir = None
170
171
def password_encode(self, password):
172
# Passphrase can not be empty and can not contain newlines or
173
# NUL bytes. So we prefix it and hex encode it.
174
return b"mandos" + binascii.hexlify(password)
175
176
def encrypt(self, data, password):
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
179
try:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
184
f.write(data)
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
187
proc.wait()
188
except IOError as e:
189
raise PGPError(e)
190
self.gnupg.passphrase = None
191
return ciphertext
192
193
def decrypt(self, data, password):
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
196
try:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
201
f.write(data)
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
204
proc.wait()
205
except IOError as e:
206
raise PGPError(e)
207
self.gnupg.passphrase = None
208
return decrypted_plaintext
209
210
87
address = "/dev/log"))
88
syslogger.setFormatter(logging.Formatter
89
(u'Mandos [%(process)d]: %(levelname)s:'
90
u' %(message)s'))
91
logger.addHandler(syslogger)
92
93
console = logging.StreamHandler()
94
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
95
u' %(levelname)s:'
96
u' %(message)s'))
97
logger.addHandler(console)
211
98
212
99
class AvahiError(Exception):
213
100
def __init__(self, value, *args, **kwargs):
229
116
Attributes:
230
117
interface: integer; avahi.IF_UNSPEC or an interface index.
231
118
Used to optionally bind to the specified interface.
232
name: string; Example: 'Mandos'
233
type: string; Example: '_mandos._tcp'.
119
name: string; Example: u'Mandos'
120
type: string; Example: u'_mandos._tcp'.
234
121
See <http://www.dns-sd.org/ServiceTypes.html>
235
122
port: integer; what port to announce
236
123
TXT: list of strings; TXT record for the service
245
132
"""
246
133
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
247
134
servicetype = None, port = None, TXT = None,
248
domain = "", host = "", max_renames = 32768,
135
domain = u"", host = u"", max_renames = 32768,
249
136
protocol = avahi.PROTO_UNSPEC, bus = None):
250
137
self.interface = interface
251
138
self.name = name
260
147
self.group = None # our entry group
261
148
self.server = None
262
149
self.bus = bus
263
self.entry_group_state_changed_match = None
264
150
def rename(self):
265
151
"""Derived from the Avahi example code"""
266
152
if self.rename_count >= self.max_renames:
267
logger.critical("No suitable Zeroconf service name found"
268
" after %i retries, exiting.",
153
logger.critical(u"No suitable Zeroconf service name found"
154
u" after %i retries, exiting.",
269
155
self.rename_count)
270
raise AvahiServiceError("Too many renames")
271
self.name = unicode(self.server
272
.GetAlternativeServiceName(self.name))
273
logger.info("Changing Zeroconf service name to %r ...",
274
self.name)
156
raise AvahiServiceError(u"Too many renames")
157
self.name = self.server.GetAlternativeServiceName(self.name)
158
logger.info(u"Changing Zeroconf service name to %r ...",
159
unicode(self.name))
160
syslogger.setFormatter(logging.Formatter
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
163
% self.name))
275
164
self.remove()
276
try:
277
self.add()
278
except dbus.exceptions.DBusException as error:
279
logger.critical("DBusException: %s", error)
280
self.cleanup()
281
os._exit(1)
165
self.add()
282
166
self.rename_count += 1
283
167
def remove(self):
284
168
"""Derived from the Avahi example code"""
285
if self.entry_group_state_changed_match is not None:
286
self.entry_group_state_changed_match.remove()
287
self.entry_group_state_changed_match = None
288
169
if self.group is not None:
289
170
self.group.Reset()
290
171
def add(self):
291
172
"""Derived from the Avahi example code"""
292
self.remove()
293
173
if self.group is None:
294
174
self.group = dbus.Interface(
295
175
self.bus.get_object(avahi.DBUS_NAME,
296
176
self.server.EntryGroupNew()),
297
177
avahi.DBUS_INTERFACE_ENTRY_GROUP)
298
self.entry_group_state_changed_match = (
299
self.group.connect_to_signal(
300
'StateChanged', self.entry_group_state_changed))
301
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
178
self.group.connect_to_signal('StateChanged',
179
self
180
.entry_group_state_changed)
181
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
302
182
self.name, self.type)
303
183
self.group.AddService(
304
184
self.interface,
311
191
self.group.Commit()
312
192
def entry_group_state_changed(self, state, error):
313
193
"""Derived from the Avahi example code"""
314
logger.debug("Avahi entry group state change: %i", state)
194
logger.debug(u"Avahi state change: %i", state)
315
195
316
196
if state == avahi.ENTRY_GROUP_ESTABLISHED:
317
logger.debug("Zeroconf service established.")
197
logger.debug(u"Zeroconf service established.")
318
198
elif state == avahi.ENTRY_GROUP_COLLISION:
319
logger.info("Zeroconf service name collision.")
199
logger.warning(u"Zeroconf service name collision.")
320
200
self.rename()
321
201
elif state == avahi.ENTRY_GROUP_FAILURE:
322
logger.critical("Avahi: Error in group state changed %s",
202
logger.critical(u"Avahi: Error in group state changed %s",
323
203
unicode(error))
324
raise AvahiGroupError("State changed: %s"
204
raise AvahiGroupError(u"State changed: %s"
325
205
% unicode(error))
326
206
def cleanup(self):
327
207
"""Derived from the Avahi example code"""
328
208
if self.group is not None:
329
try:
330
self.group.Free()
331
except (dbus.exceptions.UnknownMethodException,
332
dbus.exceptions.DBusException):
333
pass
209
self.group.Free()
334
210
self.group = None
335
self.remove()
336
def server_state_changed(self, state, error=None):
211
def server_state_changed(self, state):
337
212
"""Derived from the Avahi example code"""
338
logger.debug("Avahi server state change: %i", state)
339
bad_states = { avahi.SERVER_INVALID:
340
"Zeroconf server invalid",
341
avahi.SERVER_REGISTERING: None,
342
avahi.SERVER_COLLISION:
343
"Zeroconf server name collision",
344
avahi.SERVER_FAILURE:
345
"Zeroconf server failure" }
346
if state in bad_states:
347
if bad_states[state] is not None:
348
if error is None:
349
logger.error(bad_states[state])
350
else:
351
logger.error(bad_states[state] + ": %r", error)
352
self.cleanup()
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
215
self.remove()
353
216
elif state == avahi.SERVER_RUNNING:
354
217
self.add()
355
else:
356
if error is None:
357
logger.debug("Unknown state: %r", state)
358
else:
359
logger.debug("Unknown state: %r: %r", state, error)
360
218
def activate(self):
361
219
"""Derived from the Avahi example code"""
362
220
if self.server is None:
363
221
self.server = dbus.Interface(
364
222
self.bus.get_object(avahi.DBUS_NAME,
365
avahi.DBUS_PATH_SERVER,
366
follow_name_owner_changes=True),
223
avahi.DBUS_PATH_SERVER),
367
224
avahi.DBUS_INTERFACE_SERVER)
368
self.server.connect_to_signal("StateChanged",
225
self.server.connect_to_signal(u"StateChanged",
369
226
self.server_state_changed)
370
227
self.server_state_changed(self.server.GetState())
371
228
372
class AvahiServiceToSyslog(AvahiService):
373
def rename(self):
374
"""Add the new name to the syslog messages"""
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
379
% self.name))
380
return ret
381
229
382
def timedelta_to_milliseconds(td):
383
"Convert a datetime.timedelta() to milliseconds"
384
return ((td.days * 24 * 60 * 60 * 1000)
385
+ (td.seconds * 1000)
386
+ (td.microseconds // 1000))
387
388
230
class Client(object):
389
231
"""A representation of a client host served by this server.
390
232
391
233
Attributes:
392
approved: bool(); 'None' if not yet approved/disapproved
393
approval_delay: datetime.timedelta(); Time to wait for approval
394
approval_duration: datetime.timedelta(); Duration of one approval
234
name: string; from the config file, used in log messages and
235
D-Bus identifiers
236
fingerprint: string (40 or 32 hexadecimal digits); used to
237
uniquely identify the client
238
secret: bytestring; sent verbatim (over TLS) to client
239
host: string; available for use by the checker command
240
created: datetime.datetime(); (UTC) object creation
241
last_enabled: datetime.datetime(); (UTC)
242
enabled: bool()
243
last_checked_ok: datetime.datetime(); (UTC) or None
244
timeout: datetime.timedelta(); How long from last_checked_ok
245
until this client is invalid
246
interval: datetime.timedelta(); How often to start a new checker
247
disable_hook: If set, called by disable() as disable_hook(self)
395
248
checker: subprocess.Popen(); a running checker process used
396
249
to see if the client lives.
397
250
'None' if no process is running.
398
checker_callback_tag: a gobject event source tag, or None
399
checker_command: string; External command which is run to check
400
if client lives. %() expansions are done at
251
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
253
checker_callback_tag: - '' -
254
checker_command: string; External command which is run to check if
255
client lives. %() expansions are done at
401
256
runtime with vars(self) as dict, so that for
402
257
instance %(name)s can be used in the command.
403
checker_initiator_tag: a gobject event source tag, or None
404
created: datetime.datetime(); (UTC) object creation
405
client_structure: Object describing what attributes a client has
406
and is used for storing the client at exit
407
258
current_checker_command: string; current running checker_command
408
disable_initiator_tag: a gobject event source tag, or None
409
enabled: bool()
410
fingerprint: string (40 or 32 hexadecimal digits); used to
411
uniquely identify the client
412
host: string; available for use by the checker command
413
interval: datetime.timedelta(); How often to start a new checker
414
last_approval_request: datetime.datetime(); (UTC) or None
415
last_checked_ok: datetime.datetime(); (UTC) or None
416
last_checker_status: integer between 0 and 255 reflecting exit
417
status of last checker. -1 reflects crashed
418
checker, or None.
419
last_enabled: datetime.datetime(); (UTC) or None
420
name: string; from the config file, used in log messages and
421
D-Bus identifiers
422
secret: bytestring; sent verbatim (over TLS) to client
423
timeout: datetime.timedelta(); How long from last_checked_ok
424
until this client is disabled
425
extended_timeout: extra long timeout when password has been sent
426
runtime_expansions: Allowed attributes for runtime expansion.
427
expires: datetime.datetime(); time (UTC) when a client will be
428
disabled, or None
429
259
"""
430
260
431
runtime_expansions = ("approval_delay", "approval_duration",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
434
"last_enabled", "name", "timeout")
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
437
"interval": "2m",
438
"checker": "fping -q -- %%(host)s",
439
"host": "",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
442
"approved_by_default": "True",
443
"enabled": "True",
444
}
261
@staticmethod
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
445
267
446
268
def timeout_milliseconds(self):
447
269
"Return the 'timeout' attribute in milliseconds"
448
return timedelta_to_milliseconds(self.timeout)
449
450
def extended_timeout_milliseconds(self):
451
"Return the 'extended_timeout' attribute in milliseconds"
452
return timedelta_to_milliseconds(self.extended_timeout)
270
return self._timedelta_to_milliseconds(self.timeout)
453
271
454
272
def interval_milliseconds(self):
455
273
"Return the 'interval' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.interval)
274
return self._timedelta_to_milliseconds(self.interval)
457
275
458
def approval_delay_milliseconds(self):
459
return timedelta_to_milliseconds(self.approval_delay)
460
461
@staticmethod
462
def config_parser(config):
463
""" Construct a new dict of client settings of this form:
464
{ client_name: {setting_name: value, ...}, ...}
465
with exceptions for any special settings as defined above"""
466
settings = {}
467
for client_name in config.sections():
468
section = dict(config.items(client_name))
469
client = settings[client_name] = {}
470
471
client["host"] = section["host"]
472
# Reformat values from string types to Python types
473
client["approved_by_default"] = config.getboolean(
474
client_name, "approved_by_default")
475
client["enabled"] = config.getboolean(client_name, "enabled")
476
477
client["fingerprint"] = (section["fingerprint"].upper()
478
.replace(" ", ""))
479
if "secret" in section:
480
client["secret"] = section["secret"].decode("base64")
481
elif "secfile" in section:
482
with open(os.path.expanduser(os.path.expandvars
483
(section["secfile"])),
484
"rb") as secfile:
485
client["secret"] = secfile.read()
486
else:
487
raise TypeError("No secret or secfile for section %s"
488
% section)
489
client["timeout"] = string_to_delta(section["timeout"])
490
client["extended_timeout"] = string_to_delta(
491
section["extended_timeout"])
492
client["interval"] = string_to_delta(section["interval"])
493
client["approval_delay"] = string_to_delta(
494
section["approval_delay"])
495
client["approval_duration"] = string_to_delta(
496
section["approval_duration"])
497
client["checker_command"] = section["checker"]
498
client["last_approval_request"] = None
499
client["last_checked_ok"] = None
500
client["last_checker_status"] = None
501
if client["enabled"]:
502
client["last_enabled"] = datetime.datetime.utcnow()
503
client["expires"] = (datetime.datetime.utcnow()
504
+ client["timeout"])
505
else:
506
client["last_enabled"] = None
507
client["expires"] = None
508
509
return settings
510
511
512
def __init__(self, settings, name = None):
276
def __init__(self, name = None, disable_hook=None, config=None):
513
277
"""Note: the 'checker' key in 'config' sets the
514
278
'checker_command' attribute and *not* the 'checker'
515
279
attribute."""
516
280
self.name = name
517
# adding all client settings
518
for setting, value in settings.iteritems():
519
setattr(self, setting, value)
520
521
logger.debug("Creating client %r", self.name)
281
if config is None:
282
config = {}
283
logger.debug(u"Creating client %r", self.name)
522
284
# Uppercase and remove spaces from fingerprint for later
523
285
# comparison purposes with return value from the fingerprint()
524
286
# function
525
logger.debug(" Fingerprint: %s", self.fingerprint)
526
self.created = settings.get("created", datetime.datetime.utcnow())
527
528
# attributes specific for this server instance
287
self.fingerprint = (config[u"fingerprint"].upper()
288
.replace(u" ", u""))
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
294
(os.path.expandvars
295
(config[u"secfile"])),
296
"rb")) as secfile:
297
self.secret = secfile.read()
298
else:
299
raise TypeError(u"No secret or secfile for client %s"
300
% self.name)
301
self.host = config.get(u"host", u"")
302
self.created = datetime.datetime.utcnow()
303
self.enabled = False
304
self.last_enabled = None
305
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
308
self.disable_hook = disable_hook
529
309
self.checker = None
530
310
self.checker_initiator_tag = None
531
311
self.disable_initiator_tag = None
532
312
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
533
314
self.current_checker_command = None
534
self.approved = None
535
self.approvals_pending = 0
536
self.changedstate = (multiprocessing_manager
537
.Condition(multiprocessing_manager
538
.Lock()))
539
self.client_structure = [attr for attr in
540
self.__dict__.iterkeys()
541
if not attr.startswith("_")]
542
self.client_structure.append("client_structure")
543
544
for name, t in inspect.getmembers(type(self),
545
lambda obj:
546
isinstance(obj,
547
property)):
548
if not name.startswith("_"):
549
self.client_structure.append(name)
550
551
# Send notice to process children that client state has changed
552
def send_changedstate(self):
553
with self.changedstate:
554
self.changedstate.notify_all()
315
self.last_connect = None
555
316
556
317
def enable(self):
557
318
"""Start this client's checker and timeout hooks"""
558
if getattr(self, "enabled", False):
319
if getattr(self, u"enabled", False):
559
320
# Already enabled
560
321
return
561
self.send_changedstate()
562
self.expires = datetime.datetime.utcnow() + self.timeout
563
self.enabled = True
564
322
self.last_enabled = datetime.datetime.utcnow()
565
self.init_checker()
566
567
def disable(self, quiet=True):
568
"""Disable this client."""
569
if not getattr(self, "enabled", False):
570
return False
571
if not quiet:
572
self.send_changedstate()
573
if not quiet:
574
logger.info("Disabling client %s", self.name)
575
if getattr(self, "disable_initiator_tag", False):
576
gobject.source_remove(self.disable_initiator_tag)
577
self.disable_initiator_tag = None
578
self.expires = None
579
if getattr(self, "checker_initiator_tag", False):
580
gobject.source_remove(self.checker_initiator_tag)
581
self.checker_initiator_tag = None
582
self.stop_checker()
583
self.enabled = False
584
# Do not run this again if called by a gobject.timeout_add
585
return False
586
587
def __del__(self):
588
self.disable()
589
590
def init_checker(self):
591
323
# Schedule a new checker to be started an 'interval' from now,
592
324
# and every interval from then on.
593
325
self.checker_initiator_tag = (gobject.timeout_add
597
329
self.disable_initiator_tag = (gobject.timeout_add
598
330
(self.timeout_milliseconds(),
599
331
self.disable))
332
self.enabled = True
600
333
# Also start a new checker *right now*.
601
334
self.start_checker()
602
335
336
def disable(self, quiet=True):
337
"""Disable this client."""
338
if not getattr(self, "enabled", False):
339
return False
340
if not quiet:
341
logger.info(u"Disabling client %s", self.name)
342
if getattr(self, u"disable_initiator_tag", False):
343
gobject.source_remove(self.disable_initiator_tag)
344
self.disable_initiator_tag = None
345
if getattr(self, u"checker_initiator_tag", False):
346
gobject.source_remove(self.checker_initiator_tag)
347
self.checker_initiator_tag = None
348
self.stop_checker()
349
if self.disable_hook:
350
self.disable_hook(self)
351
self.enabled = False
352
# Do not run this again if called by a gobject.timeout_add
353
return False
354
355
def __del__(self):
356
self.disable_hook = None
357
self.disable()
358
603
359
def checker_callback(self, pid, condition, command):
604
360
"""The checker has completed, so take appropriate actions."""
605
361
self.checker_callback_tag = None
606
362
self.checker = None
607
363
if os.WIFEXITED(condition):
608
self.last_checker_status = os.WEXITSTATUS(condition)
609
if self.last_checker_status == 0:
610
logger.info("Checker for %(name)s succeeded",
364
exitstatus = os.WEXITSTATUS(condition)
365
if exitstatus == 0:
366
logger.info(u"Checker for %(name)s succeeded",
611
367
vars(self))
612
368
self.checked_ok()
613
369
else:
614
logger.info("Checker for %(name)s failed",
370
logger.info(u"Checker for %(name)s failed",
615
371
vars(self))
616
372
else:
617
self.last_checker_status = -1
618
logger.warning("Checker for %(name)s crashed?",
373
logger.warning(u"Checker for %(name)s crashed?",
619
374
vars(self))
620
375
621
def checked_ok(self, timeout=None):
376
def checked_ok(self):
622
377
"""Bump up the timeout for this client.
623
378
624
379
This should only be called when the client has been seen,
625
380
alive and well.
626
381
"""
627
if timeout is None:
628
timeout = self.timeout
629
382
self.last_checked_ok = datetime.datetime.utcnow()
630
if self.disable_initiator_tag is not None:
631
gobject.source_remove(self.disable_initiator_tag)
632
if getattr(self, "enabled", False):
633
self.disable_initiator_tag = (gobject.timeout_add
634
(timedelta_to_milliseconds
635
(timeout), self.disable))
636
self.expires = datetime.datetime.utcnow() + timeout
637
638
def need_approval(self):
639
self.last_approval_request = datetime.datetime.utcnow()
383
gobject.source_remove(self.disable_initiator_tag)
384
self.disable_initiator_tag = (gobject.timeout_add
385
(self.timeout_milliseconds(),
386
self.disable))
640
387
641
388
def start_checker(self):
642
389
"""Start a new checker subprocess if one is not running.
649
396
# client would inevitably timeout, since no checker would get
650
397
# a chance to run to completion. If we instead leave running
651
398
# checkers alone, the checker would have to take more time
652
# than 'timeout' for the client to be disabled, which is as it
653
# should be.
399
# than 'timeout' for the client to be declared invalid, which
400
# is as it should be.
654
401
655
402
# If a checker exists, make sure it is not a zombie
656
403
try:
657
404
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
658
except (AttributeError, OSError) as error:
405
except (AttributeError, OSError), error:
659
406
if (isinstance(error, OSError)
660
407
and error.errno != errno.ECHILD):
661
408
raise error
662
409
else:
663
410
if pid:
664
logger.warning("Checker was a zombie")
411
logger.warning(u"Checker was a zombie")
665
412
gobject.source_remove(self.checker_callback_tag)
666
413
self.checker_callback(pid, status,
667
414
self.current_checker_command)
672
419
command = self.checker_command % self.host
673
420
except TypeError:
674
421
# Escape attributes for the shell
675
escaped_attrs = dict(
676
(attr,
677
re.escape(unicode(str(getattr(self, attr, "")),
678
errors=
679
'replace')))
680
for attr in
681
self.runtime_expansions)
682
422
escaped_attrs = dict((key,
423
re.escape(unicode(str(val),
424
errors=
425
u'replace')))
426
for key, val in
427
vars(self).iteritems())
683
428
try:
684
429
command = self.checker_command % escaped_attrs
685
except TypeError as error:
686
logger.error('Could not format string "%s":'
687
' %s', self.checker_command, error)
430
except TypeError, error:
431
logger.error(u'Could not format string "%s":'
432
u' %s', self.checker_command, error)
688
433
return True # Try again later
689
434
self.current_checker_command = command
690
435
try:
691
logger.info("Starting checker %r for %s",
436
logger.info(u"Starting checker %r for %s",
692
437
command, self.name)
693
438
# We don't need to redirect stdout and stderr, since
694
439
# in normal mode, that is already done by daemon(),
696
441
# always replaced by /dev/null.)
697
442
self.checker = subprocess.Popen(command,
698
443
close_fds=True,
699
shell=True, cwd="/")
444
shell=True, cwd=u"/")
700
445
self.checker_callback_tag = (gobject.child_watch_add
701
446
(self.checker.pid,
702
447
self.checker_callback,
707
452
if pid:
708
453
gobject.source_remove(self.checker_callback_tag)
709
454
self.checker_callback(pid, status, command)
710
except OSError as error:
711
logger.error("Failed to start subprocess: %s",
455
except OSError, error:
456
logger.error(u"Failed to start subprocess: %s",
712
457
error)
713
458
# Re-run this periodically if run by gobject.timeout_add
714
459
return True
718
463
if self.checker_callback_tag:
719
464
gobject.source_remove(self.checker_callback_tag)
720
465
self.checker_callback_tag = None
721
if getattr(self, "checker", None) is None:
466
if getattr(self, u"checker", None) is None:
722
467
return
723
logger.debug("Stopping checker for %(name)s", vars(self))
468
logger.debug(u"Stopping checker for %(name)s", vars(self))
724
469
try:
725
470
os.kill(self.checker.pid, signal.SIGTERM)
726
471
#time.sleep(0.5)
727
472
#if self.checker.poll() is None:
728
473
# os.kill(self.checker.pid, signal.SIGKILL)
729
except OSError as error:
474
except OSError, error:
730
475
if error.errno != errno.ESRCH: # No such process
731
476
raise
732
477
self.checker = None
733
734
735
def dbus_service_property(dbus_interface, signature="v",
736
access="readwrite", byte_arrays=False):
478
479
def still_valid(self):
480
"""Has the timeout not yet passed for this client?"""
481
if not getattr(self, u"enabled", False):
482
return False
483
now = datetime.datetime.utcnow()
484
if self.last_checked_ok is None:
485
return now < (self.created + self.timeout)
486
else:
487
return now < (self.last_checked_ok + self.timeout)
488
489
490
def dbus_service_property(dbus_interface, signature=u"v",
491
access=u"readwrite", byte_arrays=False):
737
492
"""Decorators for marking methods of a DBusObjectWithProperties to
738
493
become properties on the D-Bus.
739
494
744
499
dbus.service.method, except there is only "signature", since the
745
500
type from Get() and the type sent to Set() is the same.
746
501
"""
747
# Encoding deeply encoded byte arrays is not supported yet by the
748
# "Set" method, so we fail early here:
749
if byte_arrays and signature != "ay":
750
raise ValueError("Byte arrays not supported for non-'ay'"
751
" signature %r" % signature)
752
502
def decorator(func):
753
503
func._dbus_is_property = True
754
504
func._dbus_interface = dbus_interface
755
505
func._dbus_signature = signature
756
506
func._dbus_access = access
757
507
func._dbus_name = func.__name__
758
if func._dbus_name.endswith("_dbus_property"):
508
if func._dbus_name.endswith(u"_dbus_property"):
759
509
func._dbus_name = func._dbus_name[:-14]
760
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
510
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
761
511
return func
762
512
return decorator
763
513
783
533
784
534
class DBusObjectWithProperties(dbus.service.Object):
785
535
"""A D-Bus object with properties.
786
536
787
537
Classes inheriting from this can use the dbus_service_property
788
538
decorator to expose methods as D-Bus properties. It exposes the
789
539
standard Get(), Set(), and GetAll() methods on the D-Bus.
791
541
792
542
@staticmethod
793
543
def _is_dbus_property(obj):
794
return getattr(obj, "_dbus_is_property", False)
544
return getattr(obj, u"_dbus_is_property", False)
795
545
796
546
def _get_all_dbus_properties(self):
797
547
"""Returns a generator of (name, attribute) pairs
798
548
"""
799
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
800
for cls in self.__class__.__mro__
549
return ((prop._dbus_name, prop)
801
550
for name, prop in
802
inspect.getmembers(cls, self._is_dbus_property))
551
inspect.getmembers(self, self._is_dbus_property))
803
552
804
553
def _get_dbus_property(self, interface_name, property_name):
805
554
"""Returns a bound method if one exists which is a D-Bus
806
555
property with the specified name and interface.
807
556
"""
808
for cls in self.__class__.__mro__:
809
for name, value in (inspect.getmembers
810
(cls, self._is_dbus_property)):
811
if (value._dbus_name == property_name
812
and value._dbus_interface == interface_name):
813
return value.__get__(self)
814
557
for name in (property_name,
558
property_name + u"_dbus_property"):
559
prop = getattr(self, name, None)
560
if (prop is None
561
or not self._is_dbus_property(prop)
562
or prop._dbus_name != property_name
563
or (interface_name and prop._dbus_interface
564
and interface_name != prop._dbus_interface)):
565
continue
566
return prop
815
567
# No such property
816
raise DBusPropertyNotFound(self.dbus_object_path + ":"
817
+ interface_name + "."
568
raise DBusPropertyNotFound(self.dbus_object_path + u":"
569
+ interface_name + u"."
818
570
+ property_name)
819
571
820
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
821
out_signature="v")
572
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
573
out_signature=u"v")
822
574
def Get(self, interface_name, property_name):
823
575
"""Standard D-Bus property Get() method, see D-Bus standard.
824
576
"""
825
577
prop = self._get_dbus_property(interface_name, property_name)
826
if prop._dbus_access == "write":
578
if prop._dbus_access == u"write":
827
579
raise DBusPropertyAccessException(property_name)
828
580
value = prop()
829
if not hasattr(value, "variant_level"):
581
if not hasattr(value, u"variant_level"):
830
582
return value
831
583
return type(value)(value, variant_level=value.variant_level+1)
832
584
833
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
585
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
834
586
def Set(self, interface_name, property_name, value):
835
587
"""Standard D-Bus property Set() method, see D-Bus standard.
836
588
"""
837
589
prop = self._get_dbus_property(interface_name, property_name)
838
if prop._dbus_access == "read":
590
if prop._dbus_access == u"read":
839
591
raise DBusPropertyAccessException(property_name)
840
if prop._dbus_get_args_options["byte_arrays"]:
841
# The byte_arrays option is not supported yet on
842
# signatures other than "ay".
843
if prop._dbus_signature != "ay":
844
raise ValueError
592
if prop._dbus_get_args_options[u"byte_arrays"]:
845
593
value = dbus.ByteArray(''.join(unichr(byte)
846
594
for byte in value))
847
595
prop(value)
848
596
849
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
850
out_signature="a{sv}")
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
598
out_signature=u"a{sv}")
851
599
def GetAll(self, interface_name):
852
600
"""Standard D-Bus property GetAll() method, see D-Bus
853
601
standard.
854
602
855
603
Note: Will not include properties with access="write".
856
604
"""
857
properties = {}
605
all = {}
858
606
for name, prop in self._get_all_dbus_properties():
859
607
if (interface_name
860
608
and interface_name != prop._dbus_interface):
861
609
# Interface non-empty but did not match
862
610
continue
863
611
# Ignore write-only properties
864
if prop._dbus_access == "write":
612
if prop._dbus_access == u"write":
865
613
continue
866
614
value = prop()
867
if not hasattr(value, "variant_level"):
868
properties[name] = value
615
if not hasattr(value, u"variant_level"):
616
all[name] = value
869
617
continue
870
properties[name] = type(value)(value, variant_level=
871
value.variant_level+1)
872
return dbus.Dictionary(properties, signature="sv")
618
all[name] = type(value)(value, variant_level=
619
value.variant_level+1)
620
return dbus.Dictionary(all, signature=u"sv")
873
621
874
622
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
875
out_signature="s",
623
out_signature=u"s",
876
624
path_keyword='object_path',
877
625
connection_keyword='connection')
878
626
def Introspect(self, object_path, connection):
883
631
try:
884
632
document = xml.dom.minidom.parseString(xmlstring)
885
633
def make_tag(document, name, prop):
886
e = document.createElement("property")
887
e.setAttribute("name", name)
888
e.setAttribute("type", prop._dbus_signature)
889
e.setAttribute("access", prop._dbus_access)
634
e = document.createElement(u"property")
635
e.setAttribute(u"name", name)
636
e.setAttribute(u"type", prop._dbus_signature)
637
e.setAttribute(u"access", prop._dbus_access)
890
638
return e
891
for if_tag in document.getElementsByTagName("interface"):
639
for if_tag in document.getElementsByTagName(u"interface"):
892
640
for tag in (make_tag(document, name, prop)
893
641
for name, prop
894
642
in self._get_all_dbus_properties()
895
643
if prop._dbus_interface
896
== if_tag.getAttribute("name")):
644
== if_tag.getAttribute(u"name")):
897
645
if_tag.appendChild(tag)
898
646
# Add the names to the return values for the
899
647
# "org.freedesktop.DBus.Properties" methods
900
if (if_tag.getAttribute("name")
901
== "org.freedesktop.DBus.Properties"):
902
for cn in if_tag.getElementsByTagName("method"):
903
if cn.getAttribute("name") == "Get":
904
for arg in cn.getElementsByTagName("arg"):
905
if (arg.getAttribute("direction")
906
== "out"):
907
arg.setAttribute("name", "value")
908
elif cn.getAttribute("name") == "GetAll":
909
for arg in cn.getElementsByTagName("arg"):
910
if (arg.getAttribute("direction")
911
== "out"):
912
arg.setAttribute("name", "props")
913
xmlstring = document.toxml("utf-8")
648
if (if_tag.getAttribute(u"name")
649
== u"org.freedesktop.DBus.Properties"):
650
for cn in if_tag.getElementsByTagName(u"method"):
651
if cn.getAttribute(u"name") == u"Get":
652
for arg in cn.getElementsByTagName(u"arg"):
653
if (arg.getAttribute(u"direction")
654
== u"out"):
655
arg.setAttribute(u"name", u"value")
656
elif cn.getAttribute(u"name") == u"GetAll":
657
for arg in cn.getElementsByTagName(u"arg"):
658
if (arg.getAttribute(u"direction")
659
== u"out"):
660
arg.setAttribute(u"name", u"props")
661
xmlstring = document.toxml(u"utf-8")
914
662
document.unlink()
915
663
except (AttributeError, xml.dom.DOMException,
916
xml.parsers.expat.ExpatError) as error:
917
logger.error("Failed to override Introspection method",
664
xml.parsers.expat.ExpatError), error:
665
logger.error(u"Failed to override Introspection method",
918
666
error)
919
667
return xmlstring
920
668
921
669
922
def datetime_to_dbus (dt, variant_level=0):
923
"""Convert a UTC datetime.datetime() to a D-Bus type."""
924
if dt is None:
925
return dbus.String("", variant_level = variant_level)
926
return dbus.String(dt.isoformat(),
927
variant_level=variant_level)
928
929
930
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
931
.__metaclass__):
932
"""Applied to an empty subclass of a D-Bus object, this metaclass
933
will add additional D-Bus attributes matching a certain pattern.
934
"""
935
def __new__(mcs, name, bases, attr):
936
# Go through all the base classes which could have D-Bus
937
# methods, signals, or properties in them
938
for base in (b for b in bases
939
if issubclass(b, dbus.service.Object)):
940
# Go though all attributes of the base class
941
for attrname, attribute in inspect.getmembers(base):
942
# Ignore non-D-Bus attributes, and D-Bus attributes
943
# with the wrong interface name
944
if (not hasattr(attribute, "_dbus_interface")
945
or not attribute._dbus_interface
946
.startswith("se.recompile.Mandos")):
947
continue
948
# Create an alternate D-Bus interface name based on
949
# the current name
950
alt_interface = (attribute._dbus_interface
951
.replace("se.recompile.Mandos",
952
"se.bsnet.fukt.Mandos"))
953
# Is this a D-Bus signal?
954
if getattr(attribute, "_dbus_is_signal", False):
955
# Extract the original non-method function by
956
# black magic
957
nonmethod_func = (dict(
958
zip(attribute.func_code.co_freevars,
959
attribute.__closure__))["func"]
960
.cell_contents)
961
# Create a new, but exactly alike, function
962
# object, and decorate it to be a new D-Bus signal
963
# with the alternate D-Bus interface name
964
new_function = (dbus.service.signal
965
(alt_interface,
966
attribute._dbus_signature)
967
(types.FunctionType(
968
nonmethod_func.func_code,
969
nonmethod_func.func_globals,
970
nonmethod_func.func_name,
971
nonmethod_func.func_defaults,
972
nonmethod_func.func_closure)))
973
# Define a creator of a function to call both the
974
# old and new functions, so both the old and new
975
# signals gets sent when the function is called
976
def fixscope(func1, func2):
977
"""This function is a scope container to pass
978
func1 and func2 to the "call_both" function
979
outside of its arguments"""
980
def call_both(*args, **kwargs):
981
"""This function will emit two D-Bus
982
signals by calling func1 and func2"""
983
func1(*args, **kwargs)
984
func2(*args, **kwargs)
985
return call_both
986
# Create the "call_both" function and add it to
987
# the class
988
attr[attrname] = fixscope(attribute,
989
new_function)
990
# Is this a D-Bus method?
991
elif getattr(attribute, "_dbus_is_method", False):
992
# Create a new, but exactly alike, function
993
# object. Decorate it to be a new D-Bus method
994
# with the alternate D-Bus interface name. Add it
995
# to the class.
996
attr[attrname] = (dbus.service.method
997
(alt_interface,
998
attribute._dbus_in_signature,
999
attribute._dbus_out_signature)
1000
(types.FunctionType
1001
(attribute.func_code,
1002
attribute.func_globals,
1003
attribute.func_name,
1004
attribute.func_defaults,
1005
attribute.func_closure)))
1006
# Is this a D-Bus property?
1007
elif getattr(attribute, "_dbus_is_property", False):
1008
# Create a new, but exactly alike, function
1009
# object, and decorate it to be a new D-Bus
1010
# property with the alternate D-Bus interface
1011
# name. Add it to the class.
1012
attr[attrname] = (dbus_service_property
1013
(alt_interface,
1014
attribute._dbus_signature,
1015
attribute._dbus_access,
1016
attribute
1017
._dbus_get_args_options
1018
["byte_arrays"])
1019
(types.FunctionType
1020
(attribute.func_code,
1021
attribute.func_globals,
1022
attribute.func_name,
1023
attribute.func_defaults,
1024
attribute.func_closure)))
1025
return type.__new__(mcs, name, bases, attr)
1026
1027
1028
670
class ClientDBus(Client, DBusObjectWithProperties):
1029
671
"""A Client class using D-Bus
1030
672
1032
674
dbus_object_path: dbus.ObjectPath
1033
675
bus: dbus.SystemBus()
1034
676
"""
1035
1036
runtime_expansions = (Client.runtime_expansions
1037
+ ("dbus_object_path",))
1038
1039
677
# dbus.service.Object doesn't use super(), so we can't either.
1040
678
1041
679
def __init__(self, bus = None, *args, **kwargs):
1042
680
self.bus = bus
1043
681
Client.__init__(self, *args, **kwargs)
1044
self._approvals_pending = 0
1045
1046
self._approvals_pending = 0
1047
682
# Only now, when this client is initialized, can it show up on
1048
683
# the D-Bus
1049
client_object_name = unicode(self.name).translate(
1050
{ord("."): ord("_"),
1051
ord("-"): ord("_")})
1052
684
self.dbus_object_path = (dbus.ObjectPath
1053
("/clients/" + client_object_name))
685
(u"/clients/"
686
+ self.name.replace(u".", u"_")))
1054
687
DBusObjectWithProperties.__init__(self, self.bus,
1055
688
self.dbus_object_path)
1056
1057
def notifychangeproperty(transform_func,
1058
dbus_name, type_func=lambda x: x,
1059
variant_level=1):
1060
""" Modify a variable so that it's a property which announces
1061
its changes to DBus.
1062
1063
transform_fun: Function that takes a value and a variant_level
1064
and transforms it to a D-Bus type.
1065
dbus_name: D-Bus name of the variable
1066
type_func: Function that transform the value before sending it
1067
to the D-Bus. Default: no transform
1068
variant_level: D-Bus variant level. Default: 1
1069
"""
1070
attrname = "_{0}".format(dbus_name)
1071
def setter(self, value):
1072
if hasattr(self, "dbus_object_path"):
1073
if (not hasattr(self, attrname) or
1074
type_func(getattr(self, attrname, None))
1075
!= type_func(value)):
1076
dbus_value = transform_func(type_func(value),
1077
variant_level
1078
=variant_level)
1079
self.PropertyChanged(dbus.String(dbus_name),
1080
dbus_value)
1081
setattr(self, attrname, value)
1082
1083
return property(lambda self: getattr(self, attrname), setter)
1084
1085
1086
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1087
approvals_pending = notifychangeproperty(dbus.Boolean,
1088
"ApprovalPending",
1089
type_func = bool)
1090
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1091
last_enabled = notifychangeproperty(datetime_to_dbus,
1092
"LastEnabled")
1093
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1094
type_func = lambda checker:
1095
checker is not None)
1096
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1097
"LastCheckedOK")
1098
last_approval_request = notifychangeproperty(
1099
datetime_to_dbus, "LastApprovalRequest")
1100
approved_by_default = notifychangeproperty(dbus.Boolean,
1101
"ApprovedByDefault")
1102
approval_delay = notifychangeproperty(dbus.UInt64,
1103
"ApprovalDelay",
1104
type_func =
1105
timedelta_to_milliseconds)
1106
approval_duration = notifychangeproperty(
1107
dbus.UInt64, "ApprovalDuration",
1108
type_func = timedelta_to_milliseconds)
1109
host = notifychangeproperty(dbus.String, "Host")
1110
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1111
type_func =
1112
timedelta_to_milliseconds)
1113
extended_timeout = notifychangeproperty(
1114
dbus.UInt64, "ExtendedTimeout",
1115
type_func = timedelta_to_milliseconds)
1116
interval = notifychangeproperty(dbus.UInt64,
1117
"Interval",
1118
type_func =
1119
timedelta_to_milliseconds)
1120
checker_command = notifychangeproperty(dbus.String, "Checker")
1121
1122
del notifychangeproperty
689
690
@staticmethod
691
def _datetime_to_dbus(dt, variant_level=0):
692
"""Convert a UTC datetime.datetime() to a D-Bus type."""
693
return dbus.String(dt.isoformat(),
694
variant_level=variant_level)
695
696
def enable(self):
697
oldstate = getattr(self, u"enabled", False)
698
r = Client.enable(self)
699
if oldstate != self.enabled:
700
# Emit D-Bus signals
701
self.PropertyChanged(dbus.String(u"enabled"),
702
dbus.Boolean(True, variant_level=1))
703
self.PropertyChanged(
704
dbus.String(u"last_enabled"),
705
self._datetime_to_dbus(self.last_enabled,
706
variant_level=1))
707
return r
708
709
def disable(self, quiet = False):
710
oldstate = getattr(self, u"enabled", False)
711
r = Client.disable(self, quiet=quiet)
712
if not quiet and oldstate != self.enabled:
713
# Emit D-Bus signal
714
self.PropertyChanged(dbus.String(u"enabled"),
715
dbus.Boolean(False, variant_level=1))
716
return r
1123
717
1124
718
def __del__(self, *args, **kwargs):
1125
719
try:
1126
720
self.remove_from_connection()
1127
721
except LookupError:
1128
722
pass
1129
if hasattr(DBusObjectWithProperties, "__del__"):
723
if hasattr(DBusObjectWithProperties, u"__del__"):
1130
724
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1131
725
Client.__del__(self, *args, **kwargs)
1132
726
1134
728
*args, **kwargs):
1135
729
self.checker_callback_tag = None
1136
730
self.checker = None
731
# Emit D-Bus signal
732
self.PropertyChanged(dbus.String(u"checker_running"),
733
dbus.Boolean(False, variant_level=1))
1137
734
if os.WIFEXITED(condition):
1138
735
exitstatus = os.WEXITSTATUS(condition)
1139
736
# Emit D-Bus signal
1149
746
return Client.checker_callback(self, pid, condition, command,
1150
747
*args, **kwargs)
1151
748
749
def checked_ok(self, *args, **kwargs):
750
r = Client.checked_ok(self, *args, **kwargs)
751
# Emit D-Bus signal
752
self.PropertyChanged(
753
dbus.String(u"last_checked_ok"),
754
(self._datetime_to_dbus(self.last_checked_ok,
755
variant_level=1)))
756
return r
757
1152
758
def start_checker(self, *args, **kwargs):
1153
759
old_checker = self.checker
1154
760
if self.checker is not None:
1161
767
and old_checker_pid != self.checker.pid):
1162
768
# Emit D-Bus signal
1163
769
self.CheckerStarted(self.current_checker_command)
1164
return r
1165
1166
def _reset_approved(self):
1167
self.approved = None
1168
return False
1169
1170
def approve(self, value=True):
1171
self.send_changedstate()
1172
self.approved = value
1173
gobject.timeout_add(timedelta_to_milliseconds
1174
(self.approval_duration),
1175
self._reset_approved)
1176
1177
1178
## D-Bus methods, signals & properties
1179
_interface = "se.recompile.Mandos.Client"
1180
1181
## Signals
770
self.PropertyChanged(
771
dbus.String(u"checker_running"),
772
dbus.Boolean(True, variant_level=1))
773
return r
774
775
def stop_checker(self, *args, **kwargs):
776
old_checker = getattr(self, u"checker", None)
777
r = Client.stop_checker(self, *args, **kwargs)
778
if (old_checker is not None
779
and getattr(self, u"checker", None) is None):
780
self.PropertyChanged(dbus.String(u"checker_running"),
781
dbus.Boolean(False, variant_level=1))
782
return r
783
784
## D-Bus methods & signals
785
_interface = u"se.bsnet.fukt.Mandos.Client"
786
787
# CheckedOK - method
788
@dbus.service.method(_interface)
789
def CheckedOK(self):
790
return self.checked_ok()
1182
791
1183
792
# CheckerCompleted - signal
1184
@dbus.service.signal(_interface, signature="nxs")
793
@dbus.service.signal(_interface, signature=u"nxs")
1185
794
def CheckerCompleted(self, exitcode, waitstatus, command):
1186
795
"D-Bus signal"
1187
796
pass
1188
797
1189
798
# CheckerStarted - signal
1190
@dbus.service.signal(_interface, signature="s")
799
@dbus.service.signal(_interface, signature=u"s")
1191
800
def CheckerStarted(self, command):
1192
801
"D-Bus signal"
1193
802
pass
1194
803
1195
804
# PropertyChanged - signal
1196
@dbus.service.signal(_interface, signature="sv")
805
@dbus.service.signal(_interface, signature=u"sv")
1197
806
def PropertyChanged(self, property, value):
1198
807
"D-Bus signal"
1199
808
pass
1201
810
# GotSecret - signal
1202
811
@dbus.service.signal(_interface)
1203
812
def GotSecret(self):
1204
"""D-Bus signal
1205
Is sent after a successful transfer of secret from the Mandos
1206
server to mandos-client
1207
"""
813
"D-Bus signal"
1208
814
pass
1209
815
1210
816
# Rejected - signal
1211
@dbus.service.signal(_interface, signature="s")
1212
def Rejected(self, reason):
1213
"D-Bus signal"
1214
pass
1215
1216
# NeedApproval - signal
1217
@dbus.service.signal(_interface, signature="tb")
1218
def NeedApproval(self, timeout, default):
1219
"D-Bus signal"
1220
return self.need_approval()
1221
1222
# NeRwequest - signal
1223
@dbus.service.signal(_interface, signature="s")
1224
def NewRequest(self, ip):
1225
"""D-Bus signal
1226
Is sent after a client request a password.
1227
"""
1228
pass
1229
1230
## Methods
1231
1232
# Approve - method
1233
@dbus.service.method(_interface, in_signature="b")
1234
def Approve(self, value):
1235
self.approve(value)
1236
1237
# CheckedOK - method
1238
@dbus.service.method(_interface)
1239
def CheckedOK(self):
1240
self.checked_ok()
817
@dbus.service.signal(_interface)
818
def Rejected(self):
819
"D-Bus signal"
820
pass
1241
821
1242
822
# Enable - method
1243
823
@dbus.service.method(_interface)
1262
842
def StopChecker(self):
1263
843
self.stop_checker()
1264
844
1265
## Properties
1266
1267
# ApprovalPending - property
1268
@dbus_service_property(_interface, signature="b", access="read")
1269
def ApprovalPending_dbus_property(self):
1270
return dbus.Boolean(bool(self.approvals_pending))
1271
1272
# ApprovedByDefault - property
1273
@dbus_service_property(_interface, signature="b",
1274
access="readwrite")
1275
def ApprovedByDefault_dbus_property(self, value=None):
1276
if value is None: # get
1277
return dbus.Boolean(self.approved_by_default)
1278
self.approved_by_default = bool(value)
1279
1280
# ApprovalDelay - property
1281
@dbus_service_property(_interface, signature="t",
1282
access="readwrite")
1283
def ApprovalDelay_dbus_property(self, value=None):
1284
if value is None: # get
1285
return dbus.UInt64(self.approval_delay_milliseconds())
1286
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1287
1288
# ApprovalDuration - property
1289
@dbus_service_property(_interface, signature="t",
1290
access="readwrite")
1291
def ApprovalDuration_dbus_property(self, value=None):
1292
if value is None: # get
1293
return dbus.UInt64(timedelta_to_milliseconds(
1294
self.approval_duration))
1295
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1296
1297
# Name - property
1298
@dbus_service_property(_interface, signature="s", access="read")
1299
def Name_dbus_property(self):
845
# name - property
846
@dbus_service_property(_interface, signature=u"s", access=u"read")
847
def name_dbus_property(self):
1300
848
return dbus.String(self.name)
1301
849
1302
# Fingerprint - property
1303
@dbus_service_property(_interface, signature="s", access="read")
1304
def Fingerprint_dbus_property(self):
850
# fingerprint - property
851
@dbus_service_property(_interface, signature=u"s", access=u"read")
852
def fingerprint_dbus_property(self):
1305
853
return dbus.String(self.fingerprint)
1306
854
1307
# Host - property
1308
@dbus_service_property(_interface, signature="s",
1309
access="readwrite")
1310
def Host_dbus_property(self, value=None):
855
# host - property
856
@dbus_service_property(_interface, signature=u"s",
857
access=u"readwrite")
858
def host_dbus_property(self, value=None):
1311
859
if value is None: # get
1312
860
return dbus.String(self.host)
1313
self.host = unicode(value)
1314
1315
# Created - property
1316
@dbus_service_property(_interface, signature="s", access="read")
1317
def Created_dbus_property(self):
1318
return datetime_to_dbus(self.created)
1319
1320
# LastEnabled - property
1321
@dbus_service_property(_interface, signature="s", access="read")
1322
def LastEnabled_dbus_property(self):
1323
return datetime_to_dbus(self.last_enabled)
1324
1325
# Enabled - property
1326
@dbus_service_property(_interface, signature="b",
1327
access="readwrite")
1328
def Enabled_dbus_property(self, value=None):
861
self.host = value
862
# Emit D-Bus signal
863
self.PropertyChanged(dbus.String(u"host"),
864
dbus.String(value, variant_level=1))
865
866
# created - property
867
@dbus_service_property(_interface, signature=u"s", access=u"read")
868
def created_dbus_property(self):
869
return dbus.String(self._datetime_to_dbus(self.created))
870
871
# last_enabled - property
872
@dbus_service_property(_interface, signature=u"s", access=u"read")
873
def last_enabled_dbus_property(self):
874
if self.last_enabled is None:
875
return dbus.String(u"")
876
return dbus.String(self._datetime_to_dbus(self.last_enabled))
877
878
# enabled - property
879
@dbus_service_property(_interface, signature=u"b",
880
access=u"readwrite")
881
def enabled_dbus_property(self, value=None):
1329
882
if value is None: # get
1330
883
return dbus.Boolean(self.enabled)
1331
884
if value:
1333
886
else:
1334
887
self.disable()
1335
888
1336
# LastCheckedOK - property
1337
@dbus_service_property(_interface, signature="s",
1338
access="readwrite")
1339
def LastCheckedOK_dbus_property(self, value=None):
889
# last_checked_ok - property
890
@dbus_service_property(_interface, signature=u"s",
891
access=u"readwrite")
892
def last_checked_ok_dbus_property(self, value=None):
1340
893
if value is not None:
1341
894
self.checked_ok()
1342
895
return
1343
return datetime_to_dbus(self.last_checked_ok)
1344
1345
# Expires - property
1346
@dbus_service_property(_interface, signature="s", access="read")
1347
def Expires_dbus_property(self):
1348
return datetime_to_dbus(self.expires)
1349
1350
# LastApprovalRequest - property
1351
@dbus_service_property(_interface, signature="s", access="read")
1352
def LastApprovalRequest_dbus_property(self):
1353
return datetime_to_dbus(self.last_approval_request)
1354
1355
# Timeout - property
1356
@dbus_service_property(_interface, signature="t",
1357
access="readwrite")
1358
def Timeout_dbus_property(self, value=None):
896
if self.last_checked_ok is None:
897
return dbus.String(u"")
898
return dbus.String(self._datetime_to_dbus(self
899
.last_checked_ok))
900
901
# timeout - property
902
@dbus_service_property(_interface, signature=u"t",
903
access=u"readwrite")
904
def timeout_dbus_property(self, value=None):
1359
905
if value is None: # get
1360
906
return dbus.UInt64(self.timeout_milliseconds())
1361
907
self.timeout = datetime.timedelta(0, 0, 0, value)
1362
if getattr(self, "disable_initiator_tag", None) is None:
908
# Emit D-Bus signal
909
self.PropertyChanged(dbus.String(u"timeout"),
910
dbus.UInt64(value, variant_level=1))
911
if getattr(self, u"disable_initiator_tag", None) is None:
1363
912
return
1364
913
# Reschedule timeout
1365
914
gobject.source_remove(self.disable_initiator_tag)
1366
915
self.disable_initiator_tag = None
1367
self.expires = None
1368
time_to_die = timedelta_to_milliseconds((self
1369
.last_checked_ok
1370
+ self.timeout)
1371
- datetime.datetime
1372
.utcnow())
916
time_to_die = (self.
917
_timedelta_to_milliseconds((self
918
.last_checked_ok
919
+ self.timeout)
920
- datetime.datetime
921
.utcnow()))
1373
922
if time_to_die <= 0:
1374
923
# The timeout has passed
1375
924
self.disable()
1376
925
else:
1377
self.expires = (datetime.datetime.utcnow()
1378
+ datetime.timedelta(milliseconds =
1379
time_to_die))
1380
926
self.disable_initiator_tag = (gobject.timeout_add
1381
927
(time_to_die, self.disable))
1382
928
1383
# ExtendedTimeout - property
1384
@dbus_service_property(_interface, signature="t",
1385
access="readwrite")
1386
def ExtendedTimeout_dbus_property(self, value=None):
1387
if value is None: # get
1388
return dbus.UInt64(self.extended_timeout_milliseconds())
1389
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1390
1391
# Interval - property
1392
@dbus_service_property(_interface, signature="t",
1393
access="readwrite")
1394
def Interval_dbus_property(self, value=None):
929
# interval - property
930
@dbus_service_property(_interface, signature=u"t",
931
access=u"readwrite")
932
def interval_dbus_property(self, value=None):
1395
933
if value is None: # get
1396
934
return dbus.UInt64(self.interval_milliseconds())
1397
935
self.interval = datetime.timedelta(0, 0, 0, value)
1398
if getattr(self, "checker_initiator_tag", None) is None:
936
# Emit D-Bus signal
937
self.PropertyChanged(dbus.String(u"interval"),
938
dbus.UInt64(value, variant_level=1))
939
if getattr(self, u"checker_initiator_tag", None) is None:
1399
940
return
1400
if self.enabled:
1401
# Reschedule checker run
1402
gobject.source_remove(self.checker_initiator_tag)
1403
self.checker_initiator_tag = (gobject.timeout_add
1404
(value, self.start_checker))
1405
self.start_checker() # Start one now, too
1406
1407
# Checker - property
1408
@dbus_service_property(_interface, signature="s",
1409
access="readwrite")
1410
def Checker_dbus_property(self, value=None):
941
# Reschedule checker run
942
gobject.source_remove(self.checker_initiator_tag)
943
self.checker_initiator_tag = (gobject.timeout_add
944
(value, self.start_checker))
945
self.start_checker() # Start one now, too
946
947
# checker - property
948
@dbus_service_property(_interface, signature=u"s",
949
access=u"readwrite")
950
def checker_dbus_property(self, value=None):
1411
951
if value is None: # get
1412
952
return dbus.String(self.checker_command)
1413
self.checker_command = unicode(value)
953
self.checker_command = value
954
# Emit D-Bus signal
955
self.PropertyChanged(dbus.String(u"checker"),
956
dbus.String(self.checker_command,
957
variant_level=1))
1414
958
1415
# CheckerRunning - property
1416
@dbus_service_property(_interface, signature="b",
1417
access="readwrite")
1418
def CheckerRunning_dbus_property(self, value=None):
959
# checker_running - property
960
@dbus_service_property(_interface, signature=u"b",
961
access=u"readwrite")
962
def checker_running_dbus_property(self, value=None):
1419
963
if value is None: # get
1420
964
return dbus.Boolean(self.checker is not None)
1421
965
if value:
1423
967
else:
1424
968
self.stop_checker()
1425
969
1426
# ObjectPath - property
1427
@dbus_service_property(_interface, signature="o", access="read")
1428
def ObjectPath_dbus_property(self):
970
# object_path - property
971
@dbus_service_property(_interface, signature=u"o", access=u"read")
972
def object_path_dbus_property(self):
1429
973
return self.dbus_object_path # is already a dbus.ObjectPath
1430
974
1431
# Secret = property
1432
@dbus_service_property(_interface, signature="ay",
1433
access="write", byte_arrays=True)
1434
def Secret_dbus_property(self, value):
975
# secret = property
976
@dbus_service_property(_interface, signature=u"ay",
977
access=u"write", byte_arrays=True)
978
def secret_dbus_property(self, value):
1435
979
self.secret = str(value)
1436
980
1437
981
del _interface
1438
982
1439
983
1440
class ProxyClient(object):
1441
def __init__(self, child_pipe, fpr, address):
1442
self._pipe = child_pipe
1443
self._pipe.send(('init', fpr, address))
1444
if not self._pipe.recv():
1445
raise KeyError()
1446
1447
def __getattribute__(self, name):
1448
if name == '_pipe':
1449
return super(ProxyClient, self).__getattribute__(name)
1450
self._pipe.send(('getattr', name))
1451
data = self._pipe.recv()
1452
if data[0] == 'data':
1453
return data[1]
1454
if data[0] == 'function':
1455
def func(*args, **kwargs):
1456
self._pipe.send(('funcall', name, args, kwargs))
1457
return self._pipe.recv()[1]
1458
return func
1459
1460
def __setattr__(self, name, value):
1461
if name == '_pipe':
1462
return super(ProxyClient, self).__setattr__(name, value)
1463
self._pipe.send(('setattr', name, value))
1464
1465
1466
class ClientDBusTransitional(ClientDBus):
1467
__metaclass__ = AlternateDBusNamesMetaclass
1468
1469
1470
984
class ClientHandler(socketserver.BaseRequestHandler, object):
1471
985
"""A class to handle client connections.
1472
986
1474
988
Note: This will run in its own forked process."""
1475
989
1476
990
def handle(self):
1477
with contextlib.closing(self.server.child_pipe) as child_pipe:
1478
logger.info("TCP connection from: %s",
1479
unicode(self.client_address))
1480
logger.debug("Pipe FD: %d",
1481
self.server.child_pipe.fileno())
1482
991
logger.info(u"TCP connection from: %s",
992
unicode(self.client_address))
993
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
994
# Open IPC pipe to parent process
995
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1483
996
session = (gnutls.connection
1484
997
.ClientSession(self.request,
1485
998
gnutls.connection
1486
999
.X509Credentials()))
1487
1000
1001
line = self.request.makefile().readline()
1002
logger.debug(u"Protocol version: %r", line)
1003
try:
1004
if int(line.strip().split()[0]) > 1:
1005
raise RuntimeError
1006
except (ValueError, IndexError, RuntimeError), error:
1007
logger.error(u"Unknown protocol version: %s", error)
1008
return
1009
1488
1010
# Note: gnutls.connection.X509Credentials is really a
1489
1011
# generic GnuTLS certificate credentials object so long as
1490
1012
# no X.509 keys are added to it. Therefore, we can use it
1491
1013
# here despite using OpenPGP certificates.
1492
1014
1493
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1494
# "+AES-256-CBC", "+SHA1",
1495
# "+COMP-NULL", "+CTYPE-OPENPGP",
1496
# "+DHE-DSS"))
1015
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1016
# u"+AES-256-CBC", u"+SHA1",
1017
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1018
# u"+DHE-DSS"))
1497
1019
# Use a fallback default, since this MUST be set.
1498
1020
priority = self.server.gnutls_priority
1499
1021
if priority is None:
1500
priority = "NORMAL"
1022
priority = u"NORMAL"
1501
1023
(gnutls.library.functions
1502
1024
.gnutls_priority_set_direct(session._c_object,
1503
1025
priority, None))
1504
1026
1505
# Start communication using the Mandos protocol
1506
# Get protocol number
1507
line = self.request.makefile().readline()
1508
logger.debug("Protocol version: %r", line)
1509
try:
1510
if int(line.strip().split()[0]) > 1:
1511
raise RuntimeError
1512
except (ValueError, IndexError, RuntimeError) as error:
1513
logger.error("Unknown protocol version: %s", error)
1514
return
1515
1516
# Start GnuTLS connection
1517
1027
try:
1518
1028
session.handshake()
1519
except gnutls.errors.GNUTLSError as error:
1520
logger.warning("Handshake failed: %s", error)
1029
except gnutls.errors.GNUTLSError, error:
1030
logger.warning(u"Handshake failed: %s", error)
1521
1031
# Do not run session.bye() here: the session is not
1522
1032
# established. Just abandon the request.
1523
1033
return
1524
logger.debug("Handshake succeeded")
1525
1526
approval_required = False
1034
logger.debug(u"Handshake succeeded")
1527
1035
try:
1528
try:
1529
fpr = self.fingerprint(self.peer_certificate
1530
(session))
1531
except (TypeError,
1532
gnutls.errors.GNUTLSError) as error:
1533
logger.warning("Bad certificate: %s", error)
1534
return
1535
logger.debug("Fingerprint: %s", fpr)
1536
1537
try:
1538
client = ProxyClient(child_pipe, fpr,
1539
self.client_address)
1540
except KeyError:
1541
return
1542
1543
if self.server.use_dbus:
1544
# Emit D-Bus signal
1545
client.NewRequest(str(self.client_address))
1546
1547
if client.approval_delay:
1548
delay = client.approval_delay
1549
client.approvals_pending += 1
1550
approval_required = True
1551
1552
while True:
1553
if not client.enabled:
1554
logger.info("Client %s is disabled",
1555
client.name)
1556
if self.server.use_dbus:
1557
# Emit D-Bus signal
1558
client.Rejected("Disabled")
1559
return
1560
1561
if client.approved or not client.approval_delay:
1562
#We are approved or approval is disabled
1563
break
1564
elif client.approved is None:
1565
logger.info("Client %s needs approval",
1566
client.name)
1567
if self.server.use_dbus:
1568
# Emit D-Bus signal
1569
client.NeedApproval(
1570
client.approval_delay_milliseconds(),
1571
client.approved_by_default)
1572
else:
1573
logger.warning("Client %s was not approved",
1574
client.name)
1575
if self.server.use_dbus:
1576
# Emit D-Bus signal
1577
client.Rejected("Denied")
1578
return
1579
1580
#wait until timeout or approved
1581
time = datetime.datetime.now()
1582
client.changedstate.acquire()
1583
(client.changedstate.wait
1584
(float(client.timedelta_to_milliseconds(delay)
1585
/ 1000)))
1586
client.changedstate.release()
1587
time2 = datetime.datetime.now()
1588
if (time2 - time) >= delay:
1589
if not client.approved_by_default:
1590
logger.warning("Client %s timed out while"
1591
" waiting for approval",
1592
client.name)
1593
if self.server.use_dbus:
1594
# Emit D-Bus signal
1595
client.Rejected("Approval timed out")
1596
return
1597
else:
1598
break
1599
else:
1600
delay -= time2 - time
1601
1602
sent_size = 0
1603
while sent_size < len(client.secret):
1604
try:
1605
sent = session.send(client.secret[sent_size:])
1606
except gnutls.errors.GNUTLSError as error:
1607
logger.warning("gnutls send failed")
1608
return
1609
logger.debug("Sent: %d, remaining: %d",
1610
sent, len(client.secret)
1611
- (sent_size + sent))
1612
sent_size += sent
1613
1614
logger.info("Sending secret to %s", client.name)
1615
# bump the timeout using extended_timeout
1616
client.checked_ok(client.extended_timeout)
1617
if self.server.use_dbus:
1618
# Emit D-Bus signal
1619
client.GotSecret()
1036
fpr = self.fingerprint(self.peer_certificate(session))
1037
except (TypeError, gnutls.errors.GNUTLSError), error:
1038
logger.warning(u"Bad certificate: %s", error)
1039
session.bye()
1040
return
1041
logger.debug(u"Fingerprint: %s", fpr)
1620
1042
1621
finally:
1622
if approval_required:
1623
client.approvals_pending -= 1
1624
try:
1625
session.bye()
1626
except gnutls.errors.GNUTLSError as error:
1627
logger.warning("GnuTLS bye failed")
1043
for c in self.server.clients:
1044
if c.fingerprint == fpr:
1045
client = c
1046
break
1047
else:
1048
ipc.write(u"NOTFOUND %s %s\n"
1049
% (fpr, unicode(self.client_address)))
1050
session.bye()
1051
return
1052
# Have to check if client.still_valid(), since it is
1053
# possible that the client timed out while establishing
1054
# the GnuTLS session.
1055
if not client.still_valid():
1056
ipc.write(u"INVALID %s\n" % client.name)
1057
session.bye()
1058
return
1059
ipc.write(u"SENDING %s\n" % client.name)
1060
sent_size = 0
1061
while sent_size < len(client.secret):
1062
sent = session.send(client.secret[sent_size:])
1063
logger.debug(u"Sent: %d, remaining: %d",
1064
sent, len(client.secret)
1065
- (sent_size + sent))
1066
sent_size += sent
1067
session.bye()
1628
1068
1629
1069
@staticmethod
1630
1070
def peer_certificate(session):
1640
1080
.gnutls_certificate_get_peers
1641
1081
(session._c_object, ctypes.byref(list_size)))
1642
1082
if not bool(cert_list) and list_size.value != 0:
1643
raise gnutls.errors.GNUTLSError("error getting peer"
1644
" certificate")
1083
raise gnutls.errors.GNUTLSError(u"error getting peer"
1084
u" certificate")
1645
1085
if list_size.value == 0:
1646
1086
return None
1647
1087
cert = cert_list[0]
1673
1113
if crtverify.value != 0:
1674
1114
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1675
1115
raise (gnutls.errors.CertificateSecurityError
1676
("Verify failed"))
1116
(u"Verify failed"))
1677
1117
# New buffer for the fingerprint
1678
1118
buf = ctypes.create_string_buffer(20)
1679
1119
buf_len = ctypes.c_size_t()
1686
1126
# Convert the buffer to a Python bytestring
1687
1127
fpr = ctypes.string_at(buf, buf_len.value)
1688
1128
# Convert the bytestring to hexadecimal notation
1689
hex_fpr = binascii.hexlify(fpr).upper()
1129
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1690
1130
return hex_fpr
1691
1131
1692
1132
1693
class MultiprocessingMixIn(object):
1694
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1695
def sub_process_main(self, request, address):
1696
try:
1697
self.finish_request(request, address)
1698
except Exception:
1699
self.handle_error(request, address)
1700
self.close_request(request)
1701
1702
def process_request(self, request, address):
1703
"""Start a new process to process the request."""
1704
proc = multiprocessing.Process(target = self.sub_process_main,
1705
args = (request,
1706
address))
1707
proc.start()
1708
return proc
1709
1710
1711
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1712
""" adds a pipe to the MixIn """
1133
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1134
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1713
1135
def process_request(self, request, client_address):
1714
1136
"""Overrides and wraps the original process_request().
1715
1137
1716
1138
This function creates a new pipe in self.pipe
1717
1139
"""
1718
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1719
1720
proc = MultiprocessingMixIn.process_request(self, request,
1721
client_address)
1722
self.child_pipe.close()
1723
self.add_pipe(parent_pipe, proc)
1724
1725
def add_pipe(self, parent_pipe, proc):
1140
self.pipe = os.pipe()
1141
super(ForkingMixInWithPipe,
1142
self).process_request(request, client_address)
1143
os.close(self.pipe[1]) # close write end
1144
self.add_pipe(self.pipe[0])
1145
def add_pipe(self, pipe):
1726
1146
"""Dummy function; override as necessary"""
1727
raise NotImplementedError
1728
1729
1730
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1147
os.close(pipe)
1148
1149
1150
class IPv6_TCPServer(ForkingMixInWithPipe,
1731
1151
socketserver.TCPServer, object):
1732
1152
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1733
1153
1749
1169
bind to an address or port if they were not specified."""
1750
1170
if self.interface is not None:
1751
1171
if SO_BINDTODEVICE is None:
1752
logger.error("SO_BINDTODEVICE does not exist;"
1753
" cannot bind to interface %s",
1172
logger.error(u"SO_BINDTODEVICE does not exist;"
1173
u" cannot bind to interface %s",
1754
1174
self.interface)
1755
1175
else:
1756
1176
try:
1757
1177
self.socket.setsockopt(socket.SOL_SOCKET,
1758
1178
SO_BINDTODEVICE,
1759
1179
str(self.interface
1760
+ '\0'))
1761
except socket.error as error:
1180
+ u'\0'))
1181
except socket.error, error:
1762
1182
if error[0] == errno.EPERM:
1763
logger.error("No permission to"
1764
" bind to interface %s",
1183
logger.error(u"No permission to"
1184
u" bind to interface %s",
1765
1185
self.interface)
1766
1186
elif error[0] == errno.ENOPROTOOPT:
1767
logger.error("SO_BINDTODEVICE not available;"
1768
" cannot bind to interface %s",
1187
logger.error(u"SO_BINDTODEVICE not available;"
1188
u" cannot bind to interface %s",
1769
1189
self.interface)
1770
1190
else:
1771
1191
raise
1773
1193
if self.server_address[0] or self.server_address[1]:
1774
1194
if not self.server_address[0]:
1775
1195
if self.address_family == socket.AF_INET6:
1776
any_address = "::" # in6addr_any
1196
any_address = u"::" # in6addr_any
1777
1197
else:
1778
1198
any_address = socket.INADDR_ANY
1779
1199
self.server_address = (any_address,
1806
1226
self.enabled = False
1807
1227
self.clients = clients
1808
1228
if self.clients is None:
1809
self.clients = {}
1229
self.clients = set()
1810
1230
self.use_dbus = use_dbus
1811
1231
self.gnutls_priority = gnutls_priority
1812
1232
IPv6_TCPServer.__init__(self, server_address,
1816
1236
def server_activate(self):
1817
1237
if self.enabled:
1818
1238
return socketserver.TCPServer.server_activate(self)
1819
1820
1239
def enable(self):
1821
1240
self.enabled = True
1822
1823
def add_pipe(self, parent_pipe, proc):
1241
def add_pipe(self, pipe):
1824
1242
# Call "handle_ipc" for both data and EOF events
1825
gobject.io_add_watch(parent_pipe.fileno(),
1826
gobject.IO_IN | gobject.IO_HUP,
1827
functools.partial(self.handle_ipc,
1828
parent_pipe =
1829
parent_pipe,
1830
proc = proc))
1831
1832
def handle_ipc(self, source, condition, parent_pipe=None,
1833
proc = None, client_object=None):
1243
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1244
self.handle_ipc)
1245
def handle_ipc(self, source, condition, file_objects={}):
1834
1246
condition_names = {
1835
gobject.IO_IN: "IN", # There is data to read.
1836
gobject.IO_OUT: "OUT", # Data can be written (without
1247
gobject.IO_IN: u"IN", # There is data to read.
1248
gobject.IO_OUT: u"OUT", # Data can be written (without
1837
1249
# blocking).
1838
gobject.IO_PRI: "PRI", # There is urgent data to read.
1839
gobject.IO_ERR: "ERR", # Error condition.
1840
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1250
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1251
gobject.IO_ERR: u"ERR", # Error condition.
1252
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1841
1253
# broken, usually for pipes and
1842
1254
# sockets).
1843
1255
}
1845
1257
for cond, name in
1846
1258
condition_names.iteritems()
1847
1259
if cond & condition)
1848
# error, or the other end of multiprocessing.Pipe has closed
1849
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1850
# Wait for other process to exit
1851
proc.join()
1852
return False
1853
1854
# Read a request from the child
1855
request = parent_pipe.recv()
1856
command = request[0]
1857
1858
if command == 'init':
1859
fpr = request[1]
1860
address = request[2]
1861
1862
for c in self.clients.itervalues():
1863
if c.fingerprint == fpr:
1864
client = c
1865
break
1866
else:
1867
logger.info("Client not found for fingerprint: %s, ad"
1868
"dress: %s", fpr, address)
1869
if self.use_dbus:
1870
# Emit D-Bus signal
1871
mandos_dbus_service.ClientNotFound(fpr,
1872
address[0])
1873
parent_pipe.send(False)
1874
return False
1875
1876
gobject.io_add_watch(parent_pipe.fileno(),
1877
gobject.IO_IN | gobject.IO_HUP,
1878
functools.partial(self.handle_ipc,
1879
parent_pipe =
1880
parent_pipe,
1881
proc = proc,
1882
client_object =
1883
client))
1884
parent_pipe.send(True)
1885
# remove the old hook in favor of the new above hook on
1886
# same fileno
1887
return False
1888
if command == 'funcall':
1889
funcname = request[1]
1890
args = request[2]
1891
kwargs = request[3]
1892
1893
parent_pipe.send(('data', getattr(client_object,
1894
funcname)(*args,
1895
**kwargs)))
1896
1897
if command == 'getattr':
1898
attrname = request[1]
1899
if callable(client_object.__getattribute__(attrname)):
1900
parent_pipe.send(('function',))
1901
else:
1902
parent_pipe.send(('data', client_object
1903
.__getattribute__(attrname)))
1904
1905
if command == 'setattr':
1906
attrname = request[1]
1907
value = request[2]
1908
setattr(client_object, attrname, value)
1909
1260
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1261
conditions_string)
1262
1263
# Turn the pipe file descriptor into a Python file object
1264
if source not in file_objects:
1265
file_objects[source] = os.fdopen(source, u"r", 1)
1266
1267
# Read a line from the file object
1268
cmdline = file_objects[source].readline()
1269
if not cmdline: # Empty line means end of file
1270
# close the IPC pipe
1271
file_objects[source].close()
1272
del file_objects[source]
1273
1274
# Stop calling this function
1275
return False
1276
1277
logger.debug(u"IPC command: %r", cmdline)
1278
1279
# Parse and act on command
1280
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1281
1282
if cmd == u"NOTFOUND":
1283
fpr, address = args.split(None, 1)
1284
logger.warning(u"Client not found for fingerprint: %s, ad"
1285
u"dress: %s", fpr, address)
1286
if self.use_dbus:
1287
# Emit D-Bus signal
1288
mandos_dbus_service.ClientNotFound(fpr, address)
1289
elif cmd == u"INVALID":
1290
for client in self.clients:
1291
if client.name == args:
1292
logger.warning(u"Client %s is invalid", args)
1293
if self.use_dbus:
1294
# Emit D-Bus signal
1295
client.Rejected()
1296
break
1297
else:
1298
logger.error(u"Unknown client %s is invalid", args)
1299
elif cmd == u"SENDING":
1300
for client in self.clients:
1301
if client.name == args:
1302
logger.info(u"Sending secret to %s", client.name)
1303
client.checked_ok()
1304
if self.use_dbus:
1305
# Emit D-Bus signal
1306
client.GotSecret()
1307
break
1308
else:
1309
logger.error(u"Sending secret to unknown client %s",
1310
args)
1311
else:
1312
logger.error(u"Unknown IPC command: %r", cmdline)
1313
1314
# Keep calling this function
1910
1315
return True
1911
1316
1912
1317
1913
1318
def string_to_delta(interval):
1914
1319
"""Parse a string and return a datetime.timedelta
1915
1320
1916
>>> string_to_delta('7d')
1321
>>> string_to_delta(u'7d')
1917
1322
datetime.timedelta(7)
1918
>>> string_to_delta('60s')
1323
>>> string_to_delta(u'60s')
1919
1324
datetime.timedelta(0, 60)
1920
>>> string_to_delta('60m')
1325
>>> string_to_delta(u'60m')
1921
1326
datetime.timedelta(0, 3600)
1922
>>> string_to_delta('24h')
1327
>>> string_to_delta(u'24h')
1923
1328
datetime.timedelta(1)
1924
>>> string_to_delta('1w')
1329
>>> string_to_delta(u'1w')
1925
1330
datetime.timedelta(7)
1926
>>> string_to_delta('5m 30s')
1331
>>> string_to_delta(u'5m 30s')
1927
1332
datetime.timedelta(0, 330)
1928
1333
"""
1929
1334
timevalue = datetime.timedelta(0)
1931
1336
try:
1932
1337
suffix = unicode(s[-1])
1933
1338
value = int(s[:-1])
1934
if suffix == "d":
1339
if suffix == u"d":
1935
1340
delta = datetime.timedelta(value)
1936
elif suffix == "s":
1341
elif suffix == u"s":
1937
1342
delta = datetime.timedelta(0, value)
1938
elif suffix == "m":
1343
elif suffix == u"m":
1939
1344
delta = datetime.timedelta(0, 0, 0, 0, value)
1940
elif suffix == "h":
1345
elif suffix == u"h":
1941
1346
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1942
elif suffix == "w":
1347
elif suffix == u"w":
1943
1348
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1944
1349
else:
1945
raise ValueError("Unknown suffix %r" % suffix)
1946
except (ValueError, IndexError) as e:
1947
raise ValueError(*(e.args))
1350
raise ValueError(u"Unknown suffix %r" % suffix)
1351
except (ValueError, IndexError), e:
1352
raise ValueError(e.message)
1948
1353
timevalue += delta
1949
1354
return timevalue
1950
1355
1951
1356
1357
def if_nametoindex(interface):
1358
"""Call the C function if_nametoindex(), or equivalent
1359
1360
Note: This function cannot accept a unicode string."""
1361
global if_nametoindex
1362
try:
1363
if_nametoindex = (ctypes.cdll.LoadLibrary
1364
(ctypes.util.find_library(u"c"))
1365
.if_nametoindex)
1366
except (OSError, AttributeError):
1367
logger.warning(u"Doing if_nametoindex the hard way")
1368
def if_nametoindex(interface):
1369
"Get an interface index the hard way, i.e. using fcntl()"
1370
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1371
with closing(socket.socket()) as s:
1372
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1373
struct.pack(str(u"16s16x"),
1374
interface))
1375
interface_index = struct.unpack(str(u"I"),
1376
ifreq[16:20])[0]
1377
return interface_index
1378
return if_nametoindex(interface)
1379
1380
1952
1381
def daemon(nochdir = False, noclose = False):
1953
1382
"""See daemon(3). Standard BSD Unix function.
1954
1383
1957
1386
sys.exit()
1958
1387
os.setsid()
1959
1388
if not nochdir:
1960
os.chdir("/")
1389
os.chdir(u"/")
1961
1390
if os.fork():
1962
1391
sys.exit()
1963
1392
if not noclose:
1965
1394
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1966
1395
if not stat.S_ISCHR(os.fstat(null).st_mode):
1967
1396
raise OSError(errno.ENODEV,
1968
"%s not a character device"
1397
u"%s not a character device"
1969
1398
% os.path.devnull)
1970
1399
os.dup2(null, sys.stdin.fileno())
1971
1400
os.dup2(null, sys.stdout.fileno())
1979
1408
##################################################################
1980
1409
# Parsing of options, both command line and config file
1981
1410
1982
parser = argparse.ArgumentParser()
1983
parser.add_argument("-v", "--version", action="version",
1984
version = "%%(prog)s %s" % version,
1985
help="show version number and exit")
1986
parser.add_argument("-i", "--interface", metavar="IF",
1987
help="Bind to interface IF")
1988
parser.add_argument("-a", "--address",
1989
help="Address to listen for requests on")
1990
parser.add_argument("-p", "--port", type=int,
1991
help="Port number to receive requests on")
1992
parser.add_argument("--check", action="store_true",
1993
help="Run self-test")
1994
parser.add_argument("--debug", action="store_true",
1995
help="Debug mode; run in foreground and log"
1996
" to terminal")
1997
parser.add_argument("--debuglevel", metavar="LEVEL",
1998
help="Debug level for stdout output")
1999
parser.add_argument("--priority", help="GnuTLS"
2000
" priority string (see GnuTLS documentation)")
2001
parser.add_argument("--servicename",
2002
metavar="NAME", help="Zeroconf service name")
2003
parser.add_argument("--configdir",
2004
default="/etc/mandos", metavar="DIR",
2005
help="Directory to search for configuration"
2006
" files")
2007
parser.add_argument("--no-dbus", action="store_false",
2008
dest="use_dbus", help="Do not provide D-Bus"
2009
" system bus interface")
2010
parser.add_argument("--no-ipv6", action="store_false",
2011
dest="use_ipv6", help="Do not use IPv6")
2012
parser.add_argument("--no-restore", action="store_false",
2013
dest="restore", help="Do not restore stored"
2014
" state")
2015
parser.add_argument("--statedir", metavar="DIR",
2016
help="Directory to save/restore state in")
2017
2018
options = parser.parse_args()
1411
parser = optparse.OptionParser(version = "%%prog %s" % version)
1412
parser.add_option("-i", u"--interface", type=u"string",
1413
metavar="IF", help=u"Bind to interface IF")
1414
parser.add_option("-a", u"--address", type=u"string",
1415
help=u"Address to listen for requests on")
1416
parser.add_option("-p", u"--port", type=u"int",
1417
help=u"Port number to receive requests on")
1418
parser.add_option("--check", action=u"store_true",
1419
help=u"Run self-test")
1420
parser.add_option("--debug", action=u"store_true",
1421
help=u"Debug mode; run in foreground and log to"
1422
u" terminal")
1423
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1424
u" priority string (see GnuTLS documentation)")
1425
parser.add_option("--servicename", type=u"string",
1426
metavar=u"NAME", help=u"Zeroconf service name")
1427
parser.add_option("--configdir", type=u"string",
1428
default=u"/etc/mandos", metavar=u"DIR",
1429
help=u"Directory to search for configuration"
1430
u" files")
1431
parser.add_option("--no-dbus", action=u"store_false",
1432
dest=u"use_dbus", help=u"Do not provide D-Bus"
1433
u" system bus interface")
1434
parser.add_option("--no-ipv6", action=u"store_false",
1435
dest=u"use_ipv6", help=u"Do not use IPv6")
1436
options = parser.parse_args()[0]
2019
1437
2020
1438
if options.check:
2021
1439
import doctest
2023
1441
sys.exit()
2024
1442
2025
1443
# Default values for config file for server-global settings
2026
server_defaults = { "interface": "",
2027
"address": "",
2028
"port": "",
2029
"debug": "False",
2030
"priority":
2031
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2032
"servicename": "Mandos",
2033
"use_dbus": "True",
2034
"use_ipv6": "True",
2035
"debuglevel": "",
2036
"restore": "True",
2037
"statedir": "/var/lib/mandos"
1444
server_defaults = { u"interface": u"",
1445
u"address": u"",
1446
u"port": u"",
1447
u"debug": u"False",
1448
u"priority":
1449
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1450
u"servicename": u"Mandos",
1451
u"use_dbus": u"True",
1452
u"use_ipv6": u"True",
2038
1453
}
2039
1454
2040
1455
# Parse config file for server-global settings
2041
1456
server_config = configparser.SafeConfigParser(server_defaults)
2042
1457
del server_defaults
2043
1458
server_config.read(os.path.join(options.configdir,
2044
"mandos.conf"))
1459
u"mandos.conf"))
2045
1460
# Convert the SafeConfigParser object to a dict
2046
1461
server_settings = server_config.defaults()
2047
1462
# Use the appropriate methods on the non-string config options
2048
for option in ("debug", "use_dbus", "use_ipv6"):
2049
server_settings[option] = server_config.getboolean("DEFAULT",
1463
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1464
server_settings[option] = server_config.getboolean(u"DEFAULT",
2050
1465
option)
2051
1466
if server_settings["port"]:
2052
server_settings["port"] = server_config.getint("DEFAULT",
2053
"port")
1467
server_settings["port"] = server_config.getint(u"DEFAULT",
1468
u"port")
2054
1469
del server_config
2055
1470
2056
1471
# Override the settings from the config file with command line
2057
1472
# options, if set.
2058
for option in ("interface", "address", "port", "debug",
2059
"priority", "servicename", "configdir",
2060
"use_dbus", "use_ipv6", "debuglevel", "restore",
2061
"statedir"):
1473
for option in (u"interface", u"address", u"port", u"debug",
1474
u"priority", u"servicename", u"configdir",
1475
u"use_dbus", u"use_ipv6"):
2062
1476
value = getattr(options, option)
2063
1477
if value is not None:
2064
1478
server_settings[option] = value
2072
1486
##################################################################
2073
1487
2074
1488
# For convenience
2075
debug = server_settings["debug"]
2076
debuglevel = server_settings["debuglevel"]
2077
use_dbus = server_settings["use_dbus"]
2078
use_ipv6 = server_settings["use_ipv6"]
2079
stored_state_path = os.path.join(server_settings["statedir"],
2080
stored_state_file)
2081
2082
if debug:
2083
initlogger(debug, logging.DEBUG)
2084
else:
2085
if not debuglevel:
2086
initlogger(debug)
2087
else:
2088
level = getattr(logging, debuglevel.upper())
2089
initlogger(debug, level)
2090
2091
if server_settings["servicename"] != "Mandos":
1489
debug = server_settings[u"debug"]
1490
use_dbus = server_settings[u"use_dbus"]
1491
use_ipv6 = server_settings[u"use_ipv6"]
1492
1493
if not debug:
1494
syslogger.setLevel(logging.WARNING)
1495
console.setLevel(logging.WARNING)
1496
1497
if server_settings[u"servicename"] != u"Mandos":
2092
1498
syslogger.setFormatter(logging.Formatter
2093
('Mandos (%s) [%%(process)d]:'
2094
' %%(levelname)s: %%(message)s'
2095
% server_settings["servicename"]))
1499
(u'Mandos (%s) [%%(process)d]:'
1500
u' %%(levelname)s: %%(message)s'
1501
% server_settings[u"servicename"]))
2096
1502
2097
1503
# Parse config file with clients
2098
client_config = configparser.SafeConfigParser(Client.client_defaults)
2099
client_config.read(os.path.join(server_settings["configdir"],
2100
"clients.conf"))
1504
client_defaults = { u"timeout": u"1h",
1505
u"interval": u"5m",
1506
u"checker": u"fping -q -- %%(host)s",
1507
u"host": u"",
1508
}
1509
client_config = configparser.SafeConfigParser(client_defaults)
1510
client_config.read(os.path.join(server_settings[u"configdir"],
1511
u"clients.conf"))
2101
1512
2102
1513
global mandos_dbus_service
2103
1514
mandos_dbus_service = None
2104
1515
2105
tcp_server = MandosServer((server_settings["address"],
2106
server_settings["port"]),
1516
tcp_server = MandosServer((server_settings[u"address"],
1517
server_settings[u"port"]),
2107
1518
ClientHandler,
2108
interface=(server_settings["interface"]
2109
or None),
1519
interface=server_settings[u"interface"],
2110
1520
use_ipv6=use_ipv6,
2111
1521
gnutls_priority=
2112
server_settings["priority"],
1522
server_settings[u"priority"],
2113
1523
use_dbus=use_dbus)
2114
if not debug:
2115
pidfilename = "/var/run/mandos.pid"
2116
try:
2117
pidfile = open(pidfilename, "w")
2118
except IOError:
2119
logger.error("Could not open file %r", pidfilename)
1524
pidfilename = u"/var/run/mandos.pid"
1525
try:
1526
pidfile = open(pidfilename, u"w")
1527
except IOError:
1528
logger.error(u"Could not open file %r", pidfilename)
2120
1529
2121
1530
try:
2122
uid = pwd.getpwnam("_mandos").pw_uid
2123
gid = pwd.getpwnam("_mandos").pw_gid
1531
uid = pwd.getpwnam(u"_mandos").pw_uid
1532
gid = pwd.getpwnam(u"_mandos").pw_gid
2124
1533
except KeyError:
2125
1534
try:
2126
uid = pwd.getpwnam("mandos").pw_uid
2127
gid = pwd.getpwnam("mandos").pw_gid
1535
uid = pwd.getpwnam(u"mandos").pw_uid
1536
gid = pwd.getpwnam(u"mandos").pw_gid
2128
1537
except KeyError:
2129
1538
try:
2130
uid = pwd.getpwnam("nobody").pw_uid
2131
gid = pwd.getpwnam("nobody").pw_gid
1539
uid = pwd.getpwnam(u"nobody").pw_uid
1540
gid = pwd.getpwnam(u"nobody").pw_gid
2132
1541
except KeyError:
2133
1542
uid = 65534
2134
1543
gid = 65534
2135
1544
try:
2136
1545
os.setgid(gid)
2137
1546
os.setuid(uid)
2138
except OSError as error:
1547
except OSError, error:
2139
1548
if error[0] != errno.EPERM:
2140
1549
raise error
2141
1550
1551
# Enable all possible GnuTLS debugging
2142
1552
if debug:
2143
# Enable all possible GnuTLS debugging
2144
2145
1553
# "Use a log level over 10 to enable all debugging options."
2146
1554
# - GnuTLS manual
2147
1555
gnutls.library.functions.gnutls_global_set_log_level(11)
2148
1556
2149
1557
@gnutls.library.types.gnutls_log_func
2150
1558
def debug_gnutls(level, string):
2151
logger.debug("GnuTLS: %s", string[:-1])
1559
logger.debug(u"GnuTLS: %s", string[:-1])
2152
1560
2153
1561
(gnutls.library.functions
2154
1562
.gnutls_global_set_log_function(debug_gnutls))
2155
2156
# Redirect stdin so all checkers get /dev/null
2157
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2158
os.dup2(null, sys.stdin.fileno())
2159
if null > 2:
2160
os.close(null)
2161
2162
# Need to fork before connecting to D-Bus
2163
if not debug:
2164
# Close all input and output, do double fork, etc.
2165
daemon()
2166
2167
gobject.threads_init()
2168
1563
2169
1564
global main_loop
2170
1565
# From the Avahi example code
2174
1569
# End of Avahi example code
2175
1570
if use_dbus:
2176
1571
try:
2177
bus_name = dbus.service.BusName("se.recompile.Mandos",
1572
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
2178
1573
bus, do_not_queue=True)
2179
old_bus_name = (dbus.service.BusName
2180
("se.bsnet.fukt.Mandos", bus,
2181
do_not_queue=True))
2182
except dbus.exceptions.NameExistsException as e:
2183
logger.error(unicode(e) + ", disabling D-Bus")
1574
except dbus.exceptions.NameExistsException, e:
1575
logger.error(unicode(e) + u", disabling D-Bus")
2184
1576
use_dbus = False
2185
server_settings["use_dbus"] = False
1577
server_settings[u"use_dbus"] = False
2186
1578
tcp_server.use_dbus = False
2187
1579
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2188
service = AvahiServiceToSyslog(name =
2189
server_settings["servicename"],
2190
servicetype = "_mandos._tcp",
2191
protocol = protocol, bus = bus)
1580
service = AvahiService(name = server_settings[u"servicename"],
1581
servicetype = u"_mandos._tcp",
1582
protocol = protocol, bus = bus)
2192
1583
if server_settings["interface"]:
2193
1584
service.interface = (if_nametoindex
2194
(str(server_settings["interface"])))
2195
2196
global multiprocessing_manager
2197
multiprocessing_manager = multiprocessing.Manager()
1585
(str(server_settings[u"interface"])))
2198
1586
2199
1587
client_class = Client
2200
1588
if use_dbus:
2201
client_class = functools.partial(ClientDBusTransitional,
2202
bus = bus)
2203
2204
client_settings = Client.config_parser(client_config)
2205
old_client_settings = {}
2206
clients_data = {}
2207
2208
# Get client data and settings from last running state.
2209
if server_settings["restore"]:
2210
try:
2211
with open(stored_state_path, "rb") as stored_state:
2212
clients_data, old_client_settings = (pickle.load
2213
(stored_state))
2214
os.remove(stored_state_path)
2215
except IOError as e:
2216
logger.warning("Could not load persistent state: {0}"
2217
.format(e))
2218
if e.errno != errno.ENOENT:
2219
raise
2220
except EOFError as e:
2221
logger.warning("Could not load persistent state: "
2222
"EOFError: {0}".format(e))
2223
2224
with PGPEngine() as pgp:
2225
for client_name, client in clients_data.iteritems():
2226
# Decide which value to use after restoring saved state.
2227
# We have three different values: Old config file,
2228
# new config file, and saved state.
2229
# New config value takes precedence if it differs from old
2230
# config value, otherwise use saved state.
2231
for name, value in client_settings[client_name].items():
2232
try:
2233
# For each value in new config, check if it
2234
# differs from the old config value (Except for
2235
# the "secret" attribute)
2236
if (name != "secret" and
2237
value != old_client_settings[client_name]
2238
[name]):
2239
client[name] = value
2240
except KeyError:
2241
pass
2242
2243
# Clients who has passed its expire date can still be
2244
# enabled if its last checker was successful. Clients
2245
# whose checker failed before we stored its state is
2246
# assumed to have failed all checkers during downtime.
2247
if client["enabled"]:
2248
if datetime.datetime.utcnow() >= client["expires"]:
2249
if not client["last_checked_ok"]:
2250
logger.warning(
2251
"disabling client {0} - Client never "
2252
"performed a successfull checker"
2253
.format(client["name"]))
2254
client["enabled"] = False
2255
elif client["last_checker_status"] != 0:
2256
logger.warning(
2257
"disabling client {0} - Client "
2258
"last checker failed with error code {1}"
2259
.format(client["name"],
2260
client["last_checker_status"]))
2261
client["enabled"] = False
2262
else:
2263
client["expires"] = (datetime.datetime
2264
.utcnow()
2265
+ client["timeout"])
2266
2267
try:
2268
client["secret"] = (
2269
pgp.decrypt(client["encrypted_secret"],
2270
client_settings[client_name]
2271
["secret"]))
2272
except PGPError:
2273
# If decryption fails, we use secret from new settings
2274
logger.debug("Failed to decrypt {0} old secret"
2275
.format(client_name))
2276
client["secret"] = (
2277
client_settings[client_name]["secret"])
2278
2279
2280
# Add/remove clients based on new changes made to config
2281
for client_name in set(old_client_settings) - set(client_settings):
2282
del clients_data[client_name]
2283
for client_name in set(client_settings) - set(old_client_settings):
2284
clients_data[client_name] = client_settings[client_name]
2285
2286
# Create clients all clients
2287
for client_name, client in clients_data.iteritems():
2288
tcp_server.clients[client_name] = client_class(
2289
name = client_name, settings = client)
2290
1589
client_class = functools.partial(ClientDBus, bus = bus)
1590
tcp_server.clients.update(set(
1591
client_class(name = section,
1592
config= dict(client_config.items(section)))
1593
for section in client_config.sections()))
2291
1594
if not tcp_server.clients:
2292
logger.warning("No clients defined")
2293
1595
logger.warning(u"No clients defined")
1596
1597
if debug:
1598
# Redirect stdin so all checkers get /dev/null
1599
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1600
os.dup2(null, sys.stdin.fileno())
1601
if null > 2:
1602
os.close(null)
1603
else:
1604
# No console logging
1605
logger.removeHandler(console)
1606
# Close all input and output, do double fork, etc.
1607
daemon()
1608
1609
try:
1610
with closing(pidfile):
1611
pid = os.getpid()
1612
pidfile.write(str(pid) + "\n")
1613
del pidfile
1614
except IOError:
1615
logger.error(u"Could not write to file %r with PID %d",
1616
pidfilename, pid)
1617
except NameError:
1618
# "pidfile" was never created
1619
pass
1620
del pidfilename
1621
2294
1622
if not debug:
2295
try:
2296
with pidfile:
2297
pid = os.getpid()
2298
pidfile.write(str(pid) + "\n".encode("utf-8"))
2299
del pidfile
2300
except IOError:
2301
logger.error("Could not write to file %r with PID %d",
2302
pidfilename, pid)
2303
except NameError:
2304
# "pidfile" was never created
2305
pass
2306
del pidfilename
2307
1623
signal.signal(signal.SIGINT, signal.SIG_IGN)
2308
2309
1624
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2310
1625
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2311
1626
2313
1628
class MandosDBusService(dbus.service.Object):
2314
1629
"""A D-Bus proxy object"""
2315
1630
def __init__(self):
2316
dbus.service.Object.__init__(self, bus, "/")
2317
_interface = "se.recompile.Mandos"
1631
dbus.service.Object.__init__(self, bus, u"/")
1632
_interface = u"se.bsnet.fukt.Mandos"
2318
1633
2319
@dbus.service.signal(_interface, signature="o")
2320
def ClientAdded(self, objpath):
1634
@dbus.service.signal(_interface, signature=u"oa{sv}")
1635
def ClientAdded(self, objpath, properties):
2321
1636
"D-Bus signal"
2322
1637
pass
2323
1638
2324
@dbus.service.signal(_interface, signature="ss")
1639
@dbus.service.signal(_interface, signature=u"ss")
2325
1640
def ClientNotFound(self, fingerprint, address):
2326
1641
"D-Bus signal"
2327
1642
pass
2328
1643
2329
@dbus.service.signal(_interface, signature="os")
1644
@dbus.service.signal(_interface, signature=u"os")
2330
1645
def ClientRemoved(self, objpath, name):
2331
1646
"D-Bus signal"
2332
1647
pass
2333
1648
2334
@dbus.service.method(_interface, out_signature="ao")
1649
@dbus.service.method(_interface, out_signature=u"ao")
2335
1650
def GetAllClients(self):
2336
1651
"D-Bus method"
2337
1652
return dbus.Array(c.dbus_object_path
2338
for c in
2339
tcp_server.clients.itervalues())
1653
for c in tcp_server.clients)
2340
1654
2341
1655
@dbus.service.method(_interface,
2342
out_signature="a{oa{sv}}")
1656
out_signature=u"a{oa{sv}}")
2343
1657
def GetAllClientsWithProperties(self):
2344
1658
"D-Bus method"
2345
1659
return dbus.Dictionary(
2346
((c.dbus_object_path, c.GetAll(""))
2347
for c in tcp_server.clients.itervalues()),
2348
signature="oa{sv}")
1660
((c.dbus_object_path, c.GetAll(u""))
1661
for c in tcp_server.clients),
1662
signature=u"oa{sv}")
2349
1663
2350
@dbus.service.method(_interface, in_signature="o")
1664
@dbus.service.method(_interface, in_signature=u"o")
2351
1665
def RemoveClient(self, object_path):
2352
1666
"D-Bus method"
2353
for c in tcp_server.clients.itervalues():
1667
for c in tcp_server.clients:
2354
1668
if c.dbus_object_path == object_path:
2355
del tcp_server.clients[c.name]
1669
tcp_server.clients.remove(c)
2356
1670
c.remove_from_connection()
2357
1671
# Don't signal anything except ClientRemoved
2358
1672
c.disable(quiet=True)
2363
1677
2364
1678
del _interface
2365
1679
2366
class MandosDBusServiceTransitional(MandosDBusService):
2367
__metaclass__ = AlternateDBusNamesMetaclass
2368
mandos_dbus_service = MandosDBusServiceTransitional()
1680
mandos_dbus_service = MandosDBusService()
2369
1681
2370
1682
def cleanup():
2371
1683
"Cleanup function; run on exit"
2372
1684
service.cleanup()
2373
1685
2374
multiprocessing.active_children()
2375
if not (tcp_server.clients or client_settings):
2376
return
2377
2378
# Store client before exiting. Secrets are encrypted with key
2379
# based on what config file has. If config file is
2380
# removed/edited, old secret will thus be unrecovable.
2381
clients = {}
2382
with PGPEngine() as pgp:
2383
for client in tcp_server.clients.itervalues():
2384
key = client_settings[client.name]["secret"]
2385
client.encrypted_secret = pgp.encrypt(client.secret,
2386
key)
2387
client_dict = {}
2388
2389
# A list of attributes that can not be pickled
2390
# + secret.
2391
exclude = set(("bus", "changedstate", "secret",
2392
"checker"))
2393
for name, typ in (inspect.getmembers
2394
(dbus.service.Object)):
2395
exclude.add(name)
2396
2397
client_dict["encrypted_secret"] = (client
2398
.encrypted_secret)
2399
for attr in client.client_structure:
2400
if attr not in exclude:
2401
client_dict[attr] = getattr(client, attr)
2402
2403
clients[client.name] = client_dict
2404
del client_settings[client.name]["secret"]
2405
2406
try:
2407
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2408
prefix="clients-",
2409
dir=os.path.dirname
2410
(stored_state_path))
2411
with os.fdopen(tempfd, "wb") as stored_state:
2412
pickle.dump((clients, client_settings), stored_state)
2413
os.rename(tempname, stored_state_path)
2414
except (IOError, OSError) as e:
2415
logger.warning("Could not save persistent state: {0}"
2416
.format(e))
2417
if not debug:
2418
try:
2419
os.remove(tempname)
2420
except NameError:
2421
pass
2422
if e.errno not in set((errno.ENOENT, errno.EACCES,
2423
errno.EEXIST)):
2424
raise e
2425
2426
# Delete all clients, and settings from config
2427
1686
while tcp_server.clients:
2428
name, client = tcp_server.clients.popitem()
1687
client = tcp_server.clients.pop()
2429
1688
if use_dbus:
2430
1689
client.remove_from_connection()
1690
client.disable_hook = None
2431
1691
# Don't signal anything except ClientRemoved
2432
1692
client.disable(quiet=True)
2433
1693
if use_dbus:
2434
1694
# Emit D-Bus signal
2435
mandos_dbus_service.ClientRemoved(client
2436
.dbus_object_path,
1695
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2437
1696
client.name)
2438
client_settings.clear()
2439
1697
2440
1698
atexit.register(cleanup)
2441
1699
2442
for client in tcp_server.clients.itervalues():
1700
for client in tcp_server.clients:
2443
1701
if use_dbus:
2444
1702
# Emit D-Bus signal
2445
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2446
# Need to initiate checking of clients
2447
if client.enabled:
2448
client.init_checker()
1703
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1704
client.GetAll(u""))
1705
client.enable()
2449
1706
2450
1707
tcp_server.enable()
2451
1708
tcp_server.server_activate()
2453
1710
# Find out what port we got
2454
1711
service.port = tcp_server.socket.getsockname()[1]
2455
1712
if use_ipv6:
2456
logger.info("Now listening on address %r, port %d,"
1713
logger.info(u"Now listening on address %r, port %d,"
2457
1714
" flowinfo %d, scope_id %d"
2458
1715
% tcp_server.socket.getsockname())
2459
1716
else: # IPv4
2460
logger.info("Now listening on address %r, port %d"
1717
logger.info(u"Now listening on address %r, port %d"
2461
1718
% tcp_server.socket.getsockname())
2462
1719
2463
1720
#service.interface = tcp_server.socket.getsockname()[3]
2466
1723
# From the Avahi example code
2467
1724
try:
2468
1725
service.activate()
2469
except dbus.exceptions.DBusException as error:
2470
logger.critical("DBusException: %s", error)
1726
except dbus.exceptions.DBusException, error:
1727
logger.critical(u"DBusException: %s", error)
2471
1728
cleanup()
2472
1729
sys.exit(1)
2473
1730
# End of Avahi example code
2477
1734
(tcp_server.handle_request
2478
1735
(*args[2:], **kwargs) or True))
2479
1736
2480
logger.debug("Starting main loop")
1737
logger.debug(u"Starting main loop")
2481
1738
main_loop.run()
2482
except AvahiError as error:
2483
logger.critical("AvahiError: %s", error)
1739
except AvahiError, error:
1740
logger.critical(u"AvahiError: %s", error)
2484
1741
cleanup()
2485
1742
sys.exit(1)
2486
1743
except KeyboardInterrupt:
2487
1744
if debug:
2488
print("", file=sys.stderr)
2489
logger.debug("Server received KeyboardInterrupt")
2490
logger.debug("Server exiting")
1745
print >> sys.stderr
1746
logger.debug(u"Server received KeyboardInterrupt")
1747
logger.debug(u"Server exiting")
2491
1748
# Must run before the D-Bus bus name gets deregistered
2492
1749
cleanup()
2493
1750
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0