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- Committer: Teddy Hogeborn
- Date: 2009-09-22 12:48:07 UTC
- mto: (24.1.146 mandos) (237.12.2 mandos-persistent) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 270.
- Revision ID: teddy@fukt.bsnet.se-20090922124807-i2cr0zv4vxjv38g4
* mandos-ctl: Made work again after D-Bus API changes.
(datetime_to_milliseconds): Renamed to "timedelta_to_milliseconds".
All callers changed.
(milliseconds_to_string): Use clearer mapping string format.
(string_to_delta): Add some comments.
(datetime_to_milliseconds): Renamed to "timedelta_to_milliseconds".
All callers changed.
(milliseconds_to_string): Use clearer mapping string format.
(string_to_delta): Add some comments.
- 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
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# Copyright © 2008-2011 Teddy Hogeborn
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# 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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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@recompile.se>.
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# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
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from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
34
from __future__ import division, with_statement, absolute_import
36
35
37
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import SocketServer as socketserver
38
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import socket
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import argparse
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import optparse
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import datetime
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import errno
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import gnutls.crypto
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import logging
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import logging.handlers
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import pwd
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import contextlib
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from contextlib import closing
60
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import struct
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60
import fcntl
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61
import functools
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import cPickle as pickle
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import multiprocessing
65
import types
66
import binascii
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import tempfile
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62
69
63
import dbus
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64
import dbus.service
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69
import ctypes.util
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import xml.dom.minidom
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import inspect
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import GnuPGInterface
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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()
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version = "1.0.12"
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logger = logging.Logger(u'mandos')
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85
syslogger = (logging.handlers.SysLogHandler
93
86
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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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"),
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ifreq[16:20])[0]
110
return interface_index
111
112
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def initlogger(level=logging.WARNING):
114
"""init logger and add loglevel"""
115
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syslogger.setFormatter(logging.Formatter
117
('Mandos [%(process)d]: %(levelname)s:'
118
' %(message)s'))
119
logger.addHandler(syslogger)
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
123
' [%(process)d]:'
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' %(levelname)s:'
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' %(message)s'))
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logger.addHandler(console)
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logger.setLevel(level)
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129
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class PGPError(Exception):
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"""Exception if encryption/decryption fails"""
132
pass
133
134
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class PGPEngine(object):
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"""A simple class for OpenPGP symmetric encryption & decryption"""
137
def __init__(self):
138
self.gnupg = GnuPGInterface.GnuPG()
139
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
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self.gnupg = GnuPGInterface.GnuPG()
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self.gnupg.options.meta_interactive = False
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self.gnupg.options.homedir = self.tempdir
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self.gnupg.options.extra_args.extend(['--force-mdc',
144
'--quiet'])
145
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def __enter__(self):
147
return self
148
149
def __exit__ (self, exc_type, exc_value, traceback):
150
self._cleanup()
151
return False
152
153
def __del__(self):
154
self._cleanup()
155
156
def _cleanup(self):
157
if self.tempdir is not None:
158
# Delete contents of tempdir
159
for root, dirs, files in os.walk(self.tempdir,
160
topdown = False):
161
for filename in files:
162
os.remove(os.path.join(root, filename))
163
for dirname in dirs:
164
os.rmdir(os.path.join(root, dirname))
165
# Remove tempdir
166
os.rmdir(self.tempdir)
167
self.tempdir = None
168
169
def password_encode(self, password):
170
# Passphrase can not be empty and can not contain newlines or
171
# NUL bytes. So we prefix it and hex encode it.
172
return b"mandos" + binascii.hexlify(password)
173
174
def encrypt(self, data, password):
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
177
try:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
182
f.write(data)
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
185
proc.wait()
186
except IOError as e:
187
raise PGPError(e)
188
self.gnupg.passphrase = None
189
return ciphertext
190
191
def decrypt(self, data, password):
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
194
try:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
199
f.write(data)
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
202
proc.wait()
203
except IOError as e:
204
raise PGPError(e)
205
self.gnupg.passphrase = None
206
return decrypted_plaintext
207
208
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)
209
98
210
99
class AvahiError(Exception):
211
100
def __init__(self, value, *args, **kwargs):
227
116
Attributes:
228
117
interface: integer; avahi.IF_UNSPEC or an interface index.
229
118
Used to optionally bind to the specified interface.
230
name: string; Example: 'Mandos'
231
type: string; Example: '_mandos._tcp'.
119
name: string; Example: u'Mandos'
120
type: string; Example: u'_mandos._tcp'.
232
121
See <http://www.dns-sd.org/ServiceTypes.html>
233
122
port: integer; what port to announce
234
123
TXT: list of strings; TXT record for the service
243
132
"""
244
133
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
245
134
servicetype = None, port = None, TXT = None,
246
domain = "", host = "", max_renames = 32768,
135
domain = u"", host = u"", max_renames = 32768,
247
136
protocol = avahi.PROTO_UNSPEC, bus = None):
248
137
self.interface = interface
249
138
self.name = name
258
147
self.group = None # our entry group
259
148
self.server = None
260
149
self.bus = bus
261
self.entry_group_state_changed_match = None
262
150
def rename(self):
263
151
"""Derived from the Avahi example code"""
264
152
if self.rename_count >= self.max_renames:
265
logger.critical("No suitable Zeroconf service name found"
266
" after %i retries, exiting.",
153
logger.critical(u"No suitable Zeroconf service name found"
154
u" after %i retries, exiting.",
267
155
self.rename_count)
268
raise AvahiServiceError("Too many renames")
269
self.name = unicode(self.server
270
.GetAlternativeServiceName(self.name))
271
logger.info("Changing Zeroconf service name to %r ...",
272
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))
273
164
self.remove()
274
try:
275
self.add()
276
except dbus.exceptions.DBusException as error:
277
logger.critical("DBusException: %s", error)
278
self.cleanup()
279
os._exit(1)
165
self.add()
280
166
self.rename_count += 1
281
167
def remove(self):
282
168
"""Derived from the Avahi example code"""
283
if self.entry_group_state_changed_match is not None:
284
self.entry_group_state_changed_match.remove()
285
self.entry_group_state_changed_match = None
286
169
if self.group is not None:
287
170
self.group.Reset()
288
171
def add(self):
289
172
"""Derived from the Avahi example code"""
290
self.remove()
291
173
if self.group is None:
292
174
self.group = dbus.Interface(
293
175
self.bus.get_object(avahi.DBUS_NAME,
294
176
self.server.EntryGroupNew()),
295
177
avahi.DBUS_INTERFACE_ENTRY_GROUP)
296
self.entry_group_state_changed_match = (
297
self.group.connect_to_signal(
298
'StateChanged', self.entry_group_state_changed))
299
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' ...",
300
182
self.name, self.type)
301
183
self.group.AddService(
302
184
self.interface,
309
191
self.group.Commit()
310
192
def entry_group_state_changed(self, state, error):
311
193
"""Derived from the Avahi example code"""
312
logger.debug("Avahi entry group state change: %i", state)
194
logger.debug(u"Avahi state change: %i", state)
313
195
314
196
if state == avahi.ENTRY_GROUP_ESTABLISHED:
315
logger.debug("Zeroconf service established.")
197
logger.debug(u"Zeroconf service established.")
316
198
elif state == avahi.ENTRY_GROUP_COLLISION:
317
logger.info("Zeroconf service name collision.")
199
logger.warning(u"Zeroconf service name collision.")
318
200
self.rename()
319
201
elif state == avahi.ENTRY_GROUP_FAILURE:
320
logger.critical("Avahi: Error in group state changed %s",
202
logger.critical(u"Avahi: Error in group state changed %s",
321
203
unicode(error))
322
raise AvahiGroupError("State changed: %s"
204
raise AvahiGroupError(u"State changed: %s"
323
205
% unicode(error))
324
206
def cleanup(self):
325
207
"""Derived from the Avahi example code"""
326
208
if self.group is not None:
327
try:
328
self.group.Free()
329
except (dbus.exceptions.UnknownMethodException,
330
dbus.exceptions.DBusException):
331
pass
209
self.group.Free()
332
210
self.group = None
333
self.remove()
334
def server_state_changed(self, state, error=None):
211
def server_state_changed(self, state):
335
212
"""Derived from the Avahi example code"""
336
logger.debug("Avahi server state change: %i", state)
337
bad_states = { avahi.SERVER_INVALID:
338
"Zeroconf server invalid",
339
avahi.SERVER_REGISTERING: None,
340
avahi.SERVER_COLLISION:
341
"Zeroconf server name collision",
342
avahi.SERVER_FAILURE:
343
"Zeroconf server failure" }
344
if state in bad_states:
345
if bad_states[state] is not None:
346
if error is None:
347
logger.error(bad_states[state])
348
else:
349
logger.error(bad_states[state] + ": %r", error)
350
self.cleanup()
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
215
self.remove()
351
216
elif state == avahi.SERVER_RUNNING:
352
217
self.add()
353
else:
354
if error is None:
355
logger.debug("Unknown state: %r", state)
356
else:
357
logger.debug("Unknown state: %r: %r", state, error)
358
218
def activate(self):
359
219
"""Derived from the Avahi example code"""
360
220
if self.server is None:
361
221
self.server = dbus.Interface(
362
222
self.bus.get_object(avahi.DBUS_NAME,
363
avahi.DBUS_PATH_SERVER,
364
follow_name_owner_changes=True),
223
avahi.DBUS_PATH_SERVER),
365
224
avahi.DBUS_INTERFACE_SERVER)
366
self.server.connect_to_signal("StateChanged",
225
self.server.connect_to_signal(u"StateChanged",
367
226
self.server_state_changed)
368
227
self.server_state_changed(self.server.GetState())
369
228
370
class AvahiServiceToSyslog(AvahiService):
371
def rename(self):
372
"""Add the new name to the syslog messages"""
373
ret = AvahiService.rename(self)
374
syslogger.setFormatter(logging.Formatter
375
('Mandos (%s) [%%(process)d]:'
376
' %%(levelname)s: %%(message)s'
377
% self.name))
378
return ret
379
229
380
def timedelta_to_milliseconds(td):
381
"Convert a datetime.timedelta() to milliseconds"
382
return ((td.days * 24 * 60 * 60 * 1000)
383
+ (td.seconds * 1000)
384
+ (td.microseconds // 1000))
385
386
230
class Client(object):
387
231
"""A representation of a client host served by this server.
388
232
389
233
Attributes:
390
approved: bool(); 'None' if not yet approved/disapproved
391
approval_delay: datetime.timedelta(); Time to wait for approval
392
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)
393
248
checker: subprocess.Popen(); a running checker process used
394
249
to see if the client lives.
395
250
'None' if no process is running.
396
checker_callback_tag: a gobject event source tag, or None
397
checker_command: string; External command which is run to check
398
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
399
256
runtime with vars(self) as dict, so that for
400
257
instance %(name)s can be used in the command.
401
checker_initiator_tag: a gobject event source tag, or None
402
created: datetime.datetime(); (UTC) object creation
403
client_structure: Object describing what attributes a client has
404
and is used for storing the client at exit
405
258
current_checker_command: string; current running checker_command
406
disable_initiator_tag: a gobject event source tag, or None
407
enabled: bool()
408
fingerprint: string (40 or 32 hexadecimal digits); used to
409
uniquely identify the client
410
host: string; available for use by the checker command
411
interval: datetime.timedelta(); How often to start a new checker
412
last_approval_request: datetime.datetime(); (UTC) or None
413
last_checked_ok: datetime.datetime(); (UTC) or None
414
last_checker_status: integer between 0 and 255 reflecting exit
415
status of last checker. -1 reflects crashed
416
checker, or None.
417
last_enabled: datetime.datetime(); (UTC) or None
418
name: string; from the config file, used in log messages and
419
D-Bus identifiers
420
secret: bytestring; sent verbatim (over TLS) to client
421
timeout: datetime.timedelta(); How long from last_checked_ok
422
until this client is disabled
423
extended_timeout: extra long timeout when password has been sent
424
runtime_expansions: Allowed attributes for runtime expansion.
425
expires: datetime.datetime(); time (UTC) when a client will be
426
disabled, or None
427
259
"""
428
260
429
runtime_expansions = ("approval_delay", "approval_duration",
430
"created", "enabled", "fingerprint",
431
"host", "interval", "last_checked_ok",
432
"last_enabled", "name", "timeout")
433
client_defaults = { "timeout": "5m",
434
"extended_timeout": "15m",
435
"interval": "2m",
436
"checker": "fping -q -- %%(host)s",
437
"host": "",
438
"approval_delay": "0s",
439
"approval_duration": "1s",
440
"approved_by_default": "True",
441
"enabled": "True",
442
}
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))
443
267
444
268
def timeout_milliseconds(self):
445
269
"Return the 'timeout' attribute in milliseconds"
446
return timedelta_to_milliseconds(self.timeout)
447
448
def extended_timeout_milliseconds(self):
449
"Return the 'extended_timeout' attribute in milliseconds"
450
return timedelta_to_milliseconds(self.extended_timeout)
270
return self._timedelta_to_milliseconds(self.timeout)
451
271
452
272
def interval_milliseconds(self):
453
273
"Return the 'interval' attribute in milliseconds"
454
return timedelta_to_milliseconds(self.interval)
274
return self._timedelta_to_milliseconds(self.interval)
455
275
456
def approval_delay_milliseconds(self):
457
return timedelta_to_milliseconds(self.approval_delay)
458
459
@staticmethod
460
def config_parser(config):
461
""" Construct a new dict of client settings of this form:
462
{ client_name: {setting_name: value, ...}, ...}
463
with exceptions for any special settings as defined above"""
464
settings = {}
465
for client_name in config.sections():
466
section = dict(config.items(client_name))
467
client = settings[client_name] = {}
468
469
client["host"] = section["host"]
470
# Reformat values from string types to Python types
471
client["approved_by_default"] = config.getboolean(
472
client_name, "approved_by_default")
473
client["enabled"] = config.getboolean(client_name, "enabled")
474
475
client["fingerprint"] = (section["fingerprint"].upper()
476
.replace(" ", ""))
477
if "secret" in section:
478
client["secret"] = section["secret"].decode("base64")
479
elif "secfile" in section:
480
with open(os.path.expanduser(os.path.expandvars
481
(section["secfile"])),
482
"rb") as secfile:
483
client["secret"] = secfile.read()
484
else:
485
raise TypeError("No secret or secfile for section %s"
486
% section)
487
client["timeout"] = string_to_delta(section["timeout"])
488
client["extended_timeout"] = string_to_delta(
489
section["extended_timeout"])
490
client["interval"] = string_to_delta(section["interval"])
491
client["approval_delay"] = string_to_delta(
492
section["approval_delay"])
493
client["approval_duration"] = string_to_delta(
494
section["approval_duration"])
495
client["checker_command"] = section["checker"]
496
client["last_approval_request"] = None
497
client["last_checked_ok"] = None
498
client["last_checker_status"] = None
499
if client["enabled"]:
500
client["last_enabled"] = datetime.datetime.utcnow()
501
client["expires"] = (datetime.datetime.utcnow()
502
+ client["timeout"])
503
else:
504
client["last_enabled"] = None
505
client["expires"] = None
506
507
return settings
508
509
510
def __init__(self, settings, name = None):
276
def __init__(self, name = None, disable_hook=None, config=None):
511
277
"""Note: the 'checker' key in 'config' sets the
512
278
'checker_command' attribute and *not* the 'checker'
513
279
attribute."""
514
280
self.name = name
515
# adding all client settings
516
for setting, value in settings.iteritems():
517
setattr(self, setting, value)
518
519
logger.debug("Creating client %r", self.name)
281
if config is None:
282
config = {}
283
logger.debug(u"Creating client %r", self.name)
520
284
# Uppercase and remove spaces from fingerprint for later
521
285
# comparison purposes with return value from the fingerprint()
522
286
# function
523
logger.debug(" Fingerprint: %s", self.fingerprint)
524
self.created = settings.get("created", datetime.datetime.utcnow())
525
526
# attributes specific for this server instance
287
self.fingerprint = (config[u"fingerprint"].upper()
288
.replace(u" ", u""))
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
294
(os.path.expandvars
295
(config[u"secfile"])))) as secfile:
296
self.secret = secfile.read()
297
else:
298
raise TypeError(u"No secret or secfile for client %s"
299
% self.name)
300
self.host = config.get(u"host", u"")
301
self.created = datetime.datetime.utcnow()
302
self.enabled = False
303
self.last_enabled = None
304
self.last_checked_ok = None
305
self.timeout = string_to_delta(config[u"timeout"])
306
self.interval = string_to_delta(config[u"interval"])
307
self.disable_hook = disable_hook
527
308
self.checker = None
528
309
self.checker_initiator_tag = None
529
310
self.disable_initiator_tag = None
530
311
self.checker_callback_tag = None
312
self.checker_command = config[u"checker"]
531
313
self.current_checker_command = None
532
self.approved = None
533
self.approvals_pending = 0
534
self.changedstate = (multiprocessing_manager
535
.Condition(multiprocessing_manager
536
.Lock()))
537
self.client_structure = [attr for attr in
538
self.__dict__.iterkeys()
539
if not attr.startswith("_")]
540
self.client_structure.append("client_structure")
541
542
for name, t in inspect.getmembers(type(self),
543
lambda obj:
544
isinstance(obj,
545
property)):
546
if not name.startswith("_"):
547
self.client_structure.append(name)
548
549
# Send notice to process children that client state has changed
550
def send_changedstate(self):
551
with self.changedstate:
552
self.changedstate.notify_all()
314
self.last_connect = None
553
315
554
316
def enable(self):
555
317
"""Start this client's checker and timeout hooks"""
556
if getattr(self, "enabled", False):
318
if getattr(self, u"enabled", False):
557
319
# Already enabled
558
320
return
559
self.send_changedstate()
560
self.expires = datetime.datetime.utcnow() + self.timeout
561
self.enabled = True
562
321
self.last_enabled = datetime.datetime.utcnow()
563
self.init_checker()
564
565
def disable(self, quiet=True):
566
"""Disable this client."""
567
if not getattr(self, "enabled", False):
568
return False
569
if not quiet:
570
self.send_changedstate()
571
if not quiet:
572
logger.info("Disabling client %s", self.name)
573
if getattr(self, "disable_initiator_tag", False):
574
gobject.source_remove(self.disable_initiator_tag)
575
self.disable_initiator_tag = None
576
self.expires = None
577
if getattr(self, "checker_initiator_tag", False):
578
gobject.source_remove(self.checker_initiator_tag)
579
self.checker_initiator_tag = None
580
self.stop_checker()
581
self.enabled = False
582
# Do not run this again if called by a gobject.timeout_add
583
return False
584
585
def __del__(self):
586
self.disable()
587
588
def init_checker(self):
589
322
# Schedule a new checker to be started an 'interval' from now,
590
323
# and every interval from then on.
591
324
self.checker_initiator_tag = (gobject.timeout_add
592
325
(self.interval_milliseconds(),
593
326
self.start_checker))
327
# Also start a new checker *right now*.
328
self.start_checker()
594
329
# Schedule a disable() when 'timeout' has passed
595
330
self.disable_initiator_tag = (gobject.timeout_add
596
331
(self.timeout_milliseconds(),
597
332
self.disable))
598
# Also start a new checker *right now*.
599
self.start_checker()
333
self.enabled = True
334
335
def disable(self):
336
"""Disable this client."""
337
if not getattr(self, "enabled", False):
338
return False
339
logger.info(u"Disabling client %s", self.name)
340
if getattr(self, u"disable_initiator_tag", False):
341
gobject.source_remove(self.disable_initiator_tag)
342
self.disable_initiator_tag = None
343
if getattr(self, u"checker_initiator_tag", False):
344
gobject.source_remove(self.checker_initiator_tag)
345
self.checker_initiator_tag = None
346
self.stop_checker()
347
if self.disable_hook:
348
self.disable_hook(self)
349
self.enabled = False
350
# Do not run this again if called by a gobject.timeout_add
351
return False
352
353
def __del__(self):
354
self.disable_hook = None
355
self.disable()
600
356
601
357
def checker_callback(self, pid, condition, command):
602
358
"""The checker has completed, so take appropriate actions."""
603
359
self.checker_callback_tag = None
604
360
self.checker = None
605
361
if os.WIFEXITED(condition):
606
self.last_checker_status = os.WEXITSTATUS(condition)
607
if self.last_checker_status == 0:
608
logger.info("Checker for %(name)s succeeded",
362
exitstatus = os.WEXITSTATUS(condition)
363
if exitstatus == 0:
364
logger.info(u"Checker for %(name)s succeeded",
609
365
vars(self))
610
366
self.checked_ok()
611
367
else:
612
logger.info("Checker for %(name)s failed",
368
logger.info(u"Checker for %(name)s failed",
613
369
vars(self))
614
370
else:
615
self.last_checker_status = -1
616
logger.warning("Checker for %(name)s crashed?",
371
logger.warning(u"Checker for %(name)s crashed?",
617
372
vars(self))
618
373
619
def checked_ok(self, timeout=None):
374
def checked_ok(self):
620
375
"""Bump up the timeout for this client.
621
376
622
377
This should only be called when the client has been seen,
623
378
alive and well.
624
379
"""
625
if timeout is None:
626
timeout = self.timeout
627
380
self.last_checked_ok = datetime.datetime.utcnow()
628
if self.disable_initiator_tag is not None:
629
gobject.source_remove(self.disable_initiator_tag)
630
if getattr(self, "enabled", False):
631
self.disable_initiator_tag = (gobject.timeout_add
632
(timedelta_to_milliseconds
633
(timeout), self.disable))
634
self.expires = datetime.datetime.utcnow() + timeout
635
636
def need_approval(self):
637
self.last_approval_request = datetime.datetime.utcnow()
381
gobject.source_remove(self.disable_initiator_tag)
382
self.disable_initiator_tag = (gobject.timeout_add
383
(self.timeout_milliseconds(),
384
self.disable))
638
385
639
386
def start_checker(self):
640
387
"""Start a new checker subprocess if one is not running.
647
394
# client would inevitably timeout, since no checker would get
648
395
# a chance to run to completion. If we instead leave running
649
396
# checkers alone, the checker would have to take more time
650
# than 'timeout' for the client to be disabled, which is as it
651
# should be.
397
# than 'timeout' for the client to be declared invalid, which
398
# is as it should be.
652
399
653
400
# If a checker exists, make sure it is not a zombie
654
try:
401
if self.checker is not None:
655
402
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
656
except (AttributeError, OSError) as error:
657
if (isinstance(error, OSError)
658
and error.errno != errno.ECHILD):
659
raise error
660
else:
661
403
if pid:
662
logger.warning("Checker was a zombie")
404
logger.warning(u"Checker was a zombie")
663
405
gobject.source_remove(self.checker_callback_tag)
664
406
self.checker_callback(pid, status,
665
407
self.current_checker_command)
670
412
command = self.checker_command % self.host
671
413
except TypeError:
672
414
# Escape attributes for the shell
673
escaped_attrs = dict(
674
(attr,
675
re.escape(unicode(str(getattr(self, attr, "")),
676
errors=
677
'replace')))
678
for attr in
679
self.runtime_expansions)
680
415
escaped_attrs = dict((key,
416
re.escape(unicode(str(val),
417
errors=
418
u'replace')))
419
for key, val in
420
vars(self).iteritems())
681
421
try:
682
422
command = self.checker_command % escaped_attrs
683
except TypeError as error:
684
logger.error('Could not format string "%s":'
685
' %s', self.checker_command, error)
423
except TypeError, error:
424
logger.error(u'Could not format string "%s":'
425
u' %s', self.checker_command, error)
686
426
return True # Try again later
687
427
self.current_checker_command = command
688
428
try:
689
logger.info("Starting checker %r for %s",
429
logger.info(u"Starting checker %r for %s",
690
430
command, self.name)
691
431
# We don't need to redirect stdout and stderr, since
692
432
# in normal mode, that is already done by daemon(),
694
434
# always replaced by /dev/null.)
695
435
self.checker = subprocess.Popen(command,
696
436
close_fds=True,
697
shell=True, cwd="/")
437
shell=True, cwd=u"/")
698
438
self.checker_callback_tag = (gobject.child_watch_add
699
439
(self.checker.pid,
700
440
self.checker_callback,
705
445
if pid:
706
446
gobject.source_remove(self.checker_callback_tag)
707
447
self.checker_callback(pid, status, command)
708
except OSError as error:
709
logger.error("Failed to start subprocess: %s",
448
except OSError, error:
449
logger.error(u"Failed to start subprocess: %s",
710
450
error)
711
451
# Re-run this periodically if run by gobject.timeout_add
712
452
return True
716
456
if self.checker_callback_tag:
717
457
gobject.source_remove(self.checker_callback_tag)
718
458
self.checker_callback_tag = None
719
if getattr(self, "checker", None) is None:
459
if getattr(self, u"checker", None) is None:
720
460
return
721
logger.debug("Stopping checker for %(name)s", vars(self))
461
logger.debug(u"Stopping checker for %(name)s", vars(self))
722
462
try:
723
463
os.kill(self.checker.pid, signal.SIGTERM)
724
#time.sleep(0.5)
464
#os.sleep(0.5)
725
465
#if self.checker.poll() is None:
726
466
# os.kill(self.checker.pid, signal.SIGKILL)
727
except OSError as error:
467
except OSError, error:
728
468
if error.errno != errno.ESRCH: # No such process
729
469
raise
730
470
self.checker = None
731
732
733
def dbus_service_property(dbus_interface, signature="v",
734
access="readwrite", byte_arrays=False):
471
472
def still_valid(self):
473
"""Has the timeout not yet passed for this client?"""
474
if not getattr(self, u"enabled", False):
475
return False
476
now = datetime.datetime.utcnow()
477
if self.last_checked_ok is None:
478
return now < (self.created + self.timeout)
479
else:
480
return now < (self.last_checked_ok + self.timeout)
481
482
483
def dbus_service_property(dbus_interface, signature=u"v",
484
access=u"readwrite", byte_arrays=False):
735
485
"""Decorators for marking methods of a DBusObjectWithProperties to
736
486
become properties on the D-Bus.
737
487
742
492
dbus.service.method, except there is only "signature", since the
743
493
type from Get() and the type sent to Set() is the same.
744
494
"""
745
# Encoding deeply encoded byte arrays is not supported yet by the
746
# "Set" method, so we fail early here:
747
if byte_arrays and signature != "ay":
748
raise ValueError("Byte arrays not supported for non-'ay'"
749
" signature %r" % signature)
750
495
def decorator(func):
751
496
func._dbus_is_property = True
752
497
func._dbus_interface = dbus_interface
753
498
func._dbus_signature = signature
754
499
func._dbus_access = access
755
500
func._dbus_name = func.__name__
756
if func._dbus_name.endswith("_dbus_property"):
501
if func._dbus_name.endswith(u"_dbus_property"):
757
502
func._dbus_name = func._dbus_name[:-14]
758
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
503
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
759
504
return func
760
505
return decorator
761
506
781
526
782
527
class DBusObjectWithProperties(dbus.service.Object):
783
528
"""A D-Bus object with properties.
784
529
785
530
Classes inheriting from this can use the dbus_service_property
786
531
decorator to expose methods as D-Bus properties. It exposes the
787
532
standard Get(), Set(), and GetAll() methods on the D-Bus.
789
534
790
535
@staticmethod
791
536
def _is_dbus_property(obj):
792
return getattr(obj, "_dbus_is_property", False)
537
return getattr(obj, u"_dbus_is_property", False)
793
538
794
539
def _get_all_dbus_properties(self):
795
540
"""Returns a generator of (name, attribute) pairs
796
541
"""
797
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
798
for cls in self.__class__.__mro__
542
return ((prop._dbus_name, prop)
799
543
for name, prop in
800
inspect.getmembers(cls, self._is_dbus_property))
544
inspect.getmembers(self, self._is_dbus_property))
801
545
802
546
def _get_dbus_property(self, interface_name, property_name):
803
547
"""Returns a bound method if one exists which is a D-Bus
804
548
property with the specified name and interface.
805
549
"""
806
for cls in self.__class__.__mro__:
807
for name, value in (inspect.getmembers
808
(cls, self._is_dbus_property)):
809
if (value._dbus_name == property_name
810
and value._dbus_interface == interface_name):
811
return value.__get__(self)
812
550
for name in (property_name,
551
property_name + u"_dbus_property"):
552
prop = getattr(self, name, None)
553
if (prop is None
554
or not self._is_dbus_property(prop)
555
or prop._dbus_name != property_name
556
or (interface_name and prop._dbus_interface
557
and interface_name != prop._dbus_interface)):
558
continue
559
return prop
813
560
# No such property
814
raise DBusPropertyNotFound(self.dbus_object_path + ":"
815
+ interface_name + "."
561
raise DBusPropertyNotFound(self.dbus_object_path + u":"
562
+ interface_name + u"."
816
563
+ property_name)
817
564
818
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
819
out_signature="v")
565
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
566
out_signature=u"v")
820
567
def Get(self, interface_name, property_name):
821
568
"""Standard D-Bus property Get() method, see D-Bus standard.
822
569
"""
823
570
prop = self._get_dbus_property(interface_name, property_name)
824
if prop._dbus_access == "write":
571
if prop._dbus_access == u"write":
825
572
raise DBusPropertyAccessException(property_name)
826
573
value = prop()
827
if not hasattr(value, "variant_level"):
574
if not hasattr(value, u"variant_level"):
828
575
return value
829
576
return type(value)(value, variant_level=value.variant_level+1)
830
577
831
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
578
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
832
579
def Set(self, interface_name, property_name, value):
833
580
"""Standard D-Bus property Set() method, see D-Bus standard.
834
581
"""
835
582
prop = self._get_dbus_property(interface_name, property_name)
836
if prop._dbus_access == "read":
583
if prop._dbus_access == u"read":
837
584
raise DBusPropertyAccessException(property_name)
838
if prop._dbus_get_args_options["byte_arrays"]:
839
# The byte_arrays option is not supported yet on
840
# signatures other than "ay".
841
if prop._dbus_signature != "ay":
842
raise ValueError
585
if prop._dbus_get_args_options[u"byte_arrays"]:
843
586
value = dbus.ByteArray(''.join(unichr(byte)
844
587
for byte in value))
845
588
prop(value)
846
589
847
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
848
out_signature="a{sv}")
590
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
591
out_signature=u"a{sv}")
849
592
def GetAll(self, interface_name):
850
593
"""Standard D-Bus property GetAll() method, see D-Bus
851
594
standard.
852
595
853
596
Note: Will not include properties with access="write".
854
597
"""
855
properties = {}
598
all = {}
856
599
for name, prop in self._get_all_dbus_properties():
857
600
if (interface_name
858
601
and interface_name != prop._dbus_interface):
859
602
# Interface non-empty but did not match
860
603
continue
861
604
# Ignore write-only properties
862
if prop._dbus_access == "write":
605
if prop._dbus_access == u"write":
863
606
continue
864
607
value = prop()
865
if not hasattr(value, "variant_level"):
866
properties[name] = value
608
if not hasattr(value, u"variant_level"):
609
all[name] = value
867
610
continue
868
properties[name] = type(value)(value, variant_level=
869
value.variant_level+1)
870
return dbus.Dictionary(properties, signature="sv")
611
all[name] = type(value)(value, variant_level=
612
value.variant_level+1)
613
return dbus.Dictionary(all, signature=u"sv")
871
614
872
615
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
873
out_signature="s",
616
out_signature=u"s",
874
617
path_keyword='object_path',
875
618
connection_keyword='connection')
876
619
def Introspect(self, object_path, connection):
877
620
"""Standard D-Bus method, overloaded to insert property tags.
878
621
"""
879
622
xmlstring = dbus.service.Object.Introspect(self, object_path,
880
connection)
881
try:
882
document = xml.dom.minidom.parseString(xmlstring)
883
def make_tag(document, name, prop):
884
e = document.createElement("property")
885
e.setAttribute("name", name)
886
e.setAttribute("type", prop._dbus_signature)
887
e.setAttribute("access", prop._dbus_access)
888
return e
889
for if_tag in document.getElementsByTagName("interface"):
890
for tag in (make_tag(document, name, prop)
891
for name, prop
892
in self._get_all_dbus_properties()
893
if prop._dbus_interface
894
== if_tag.getAttribute("name")):
895
if_tag.appendChild(tag)
896
# Add the names to the return values for the
897
# "org.freedesktop.DBus.Properties" methods
898
if (if_tag.getAttribute("name")
899
== "org.freedesktop.DBus.Properties"):
900
for cn in if_tag.getElementsByTagName("method"):
901
if cn.getAttribute("name") == "Get":
902
for arg in cn.getElementsByTagName("arg"):
903
if (arg.getAttribute("direction")
904
== "out"):
905
arg.setAttribute("name", "value")
906
elif cn.getAttribute("name") == "GetAll":
907
for arg in cn.getElementsByTagName("arg"):
908
if (arg.getAttribute("direction")
909
== "out"):
910
arg.setAttribute("name", "props")
911
xmlstring = document.toxml("utf-8")
912
document.unlink()
913
except (AttributeError, xml.dom.DOMException,
914
xml.parsers.expat.ExpatError) as error:
915
logger.error("Failed to override Introspection method",
916
error)
623
connection)
624
document = xml.dom.minidom.parseString(xmlstring)
625
del xmlstring
626
def make_tag(document, name, prop):
627
e = document.createElement(u"property")
628
e.setAttribute(u"name", name)
629
e.setAttribute(u"type", prop._dbus_signature)
630
e.setAttribute(u"access", prop._dbus_access)
631
return e
632
for if_tag in document.getElementsByTagName(u"interface"):
633
for tag in (make_tag(document, name, prop)
634
for name, prop
635
in self._get_all_dbus_properties()
636
if prop._dbus_interface
637
== if_tag.getAttribute(u"name")):
638
if_tag.appendChild(tag)
639
xmlstring = document.toxml(u"utf-8")
640
document.unlink()
917
641
return xmlstring
918
642
919
643
920
def datetime_to_dbus (dt, variant_level=0):
921
"""Convert a UTC datetime.datetime() to a D-Bus type."""
922
if dt is None:
923
return dbus.String("", variant_level = variant_level)
924
return dbus.String(dt.isoformat(),
925
variant_level=variant_level)
926
927
928
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
929
.__metaclass__):
930
"""Applied to an empty subclass of a D-Bus object, this metaclass
931
will add additional D-Bus attributes matching a certain pattern.
932
"""
933
def __new__(mcs, name, bases, attr):
934
# Go through all the base classes which could have D-Bus
935
# methods, signals, or properties in them
936
for base in (b for b in bases
937
if issubclass(b, dbus.service.Object)):
938
# Go though all attributes of the base class
939
for attrname, attribute in inspect.getmembers(base):
940
# Ignore non-D-Bus attributes, and D-Bus attributes
941
# with the wrong interface name
942
if (not hasattr(attribute, "_dbus_interface")
943
or not attribute._dbus_interface
944
.startswith("se.recompile.Mandos")):
945
continue
946
# Create an alternate D-Bus interface name based on
947
# the current name
948
alt_interface = (attribute._dbus_interface
949
.replace("se.recompile.Mandos",
950
"se.bsnet.fukt.Mandos"))
951
# Is this a D-Bus signal?
952
if getattr(attribute, "_dbus_is_signal", False):
953
# Extract the original non-method function by
954
# black magic
955
nonmethod_func = (dict(
956
zip(attribute.func_code.co_freevars,
957
attribute.__closure__))["func"]
958
.cell_contents)
959
# Create a new, but exactly alike, function
960
# object, and decorate it to be a new D-Bus signal
961
# with the alternate D-Bus interface name
962
new_function = (dbus.service.signal
963
(alt_interface,
964
attribute._dbus_signature)
965
(types.FunctionType(
966
nonmethod_func.func_code,
967
nonmethod_func.func_globals,
968
nonmethod_func.func_name,
969
nonmethod_func.func_defaults,
970
nonmethod_func.func_closure)))
971
# Define a creator of a function to call both the
972
# old and new functions, so both the old and new
973
# signals gets sent when the function is called
974
def fixscope(func1, func2):
975
"""This function is a scope container to pass
976
func1 and func2 to the "call_both" function
977
outside of its arguments"""
978
def call_both(*args, **kwargs):
979
"""This function will emit two D-Bus
980
signals by calling func1 and func2"""
981
func1(*args, **kwargs)
982
func2(*args, **kwargs)
983
return call_both
984
# Create the "call_both" function and add it to
985
# the class
986
attr[attrname] = fixscope(attribute,
987
new_function)
988
# Is this a D-Bus method?
989
elif getattr(attribute, "_dbus_is_method", False):
990
# Create a new, but exactly alike, function
991
# object. Decorate it to be a new D-Bus method
992
# with the alternate D-Bus interface name. Add it
993
# to the class.
994
attr[attrname] = (dbus.service.method
995
(alt_interface,
996
attribute._dbus_in_signature,
997
attribute._dbus_out_signature)
998
(types.FunctionType
999
(attribute.func_code,
1000
attribute.func_globals,
1001
attribute.func_name,
1002
attribute.func_defaults,
1003
attribute.func_closure)))
1004
# Is this a D-Bus property?
1005
elif getattr(attribute, "_dbus_is_property", False):
1006
# Create a new, but exactly alike, function
1007
# object, and decorate it to be a new D-Bus
1008
# property with the alternate D-Bus interface
1009
# name. Add it to the class.
1010
attr[attrname] = (dbus_service_property
1011
(alt_interface,
1012
attribute._dbus_signature,
1013
attribute._dbus_access,
1014
attribute
1015
._dbus_get_args_options
1016
["byte_arrays"])
1017
(types.FunctionType
1018
(attribute.func_code,
1019
attribute.func_globals,
1020
attribute.func_name,
1021
attribute.func_defaults,
1022
attribute.func_closure)))
1023
return type.__new__(mcs, name, bases, attr)
1024
1025
1026
644
class ClientDBus(Client, DBusObjectWithProperties):
1027
645
"""A Client class using D-Bus
1028
646
1030
648
dbus_object_path: dbus.ObjectPath
1031
649
bus: dbus.SystemBus()
1032
650
"""
1033
1034
runtime_expansions = (Client.runtime_expansions
1035
+ ("dbus_object_path",))
1036
1037
651
# dbus.service.Object doesn't use super(), so we can't either.
1038
652
1039
653
def __init__(self, bus = None, *args, **kwargs):
1040
654
self.bus = bus
1041
655
Client.__init__(self, *args, **kwargs)
1042
self._approvals_pending = 0
1043
1044
self._approvals_pending = 0
1045
656
# Only now, when this client is initialized, can it show up on
1046
657
# the D-Bus
1047
client_object_name = unicode(self.name).translate(
1048
{ord("."): ord("_"),
1049
ord("-"): ord("_")})
1050
658
self.dbus_object_path = (dbus.ObjectPath
1051
("/clients/" + client_object_name))
659
(u"/clients/"
660
+ self.name.replace(u".", u"_")))
1052
661
DBusObjectWithProperties.__init__(self, self.bus,
1053
662
self.dbus_object_path)
1054
1055
def notifychangeproperty(transform_func,
1056
dbus_name, type_func=lambda x: x,
1057
variant_level=1):
1058
""" Modify a variable so that it's a property which announces
1059
its changes to DBus.
1060
1061
transform_fun: Function that takes a value and a variant_level
1062
and transforms it to a D-Bus type.
1063
dbus_name: D-Bus name of the variable
1064
type_func: Function that transform the value before sending it
1065
to the D-Bus. Default: no transform
1066
variant_level: D-Bus variant level. Default: 1
1067
"""
1068
attrname = "_{0}".format(dbus_name)
1069
def setter(self, value):
1070
if hasattr(self, "dbus_object_path"):
1071
if (not hasattr(self, attrname) or
1072
type_func(getattr(self, attrname, None))
1073
!= type_func(value)):
1074
dbus_value = transform_func(type_func(value),
1075
variant_level
1076
=variant_level)
1077
self.PropertyChanged(dbus.String(dbus_name),
1078
dbus_value)
1079
setattr(self, attrname, value)
1080
1081
return property(lambda self: getattr(self, attrname), setter)
1082
1083
1084
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1085
approvals_pending = notifychangeproperty(dbus.Boolean,
1086
"ApprovalPending",
1087
type_func = bool)
1088
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1089
last_enabled = notifychangeproperty(datetime_to_dbus,
1090
"LastEnabled")
1091
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1092
type_func = lambda checker:
1093
checker is not None)
1094
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1095
"LastCheckedOK")
1096
last_approval_request = notifychangeproperty(
1097
datetime_to_dbus, "LastApprovalRequest")
1098
approved_by_default = notifychangeproperty(dbus.Boolean,
1099
"ApprovedByDefault")
1100
approval_delay = notifychangeproperty(dbus.UInt64,
1101
"ApprovalDelay",
1102
type_func =
1103
timedelta_to_milliseconds)
1104
approval_duration = notifychangeproperty(
1105
dbus.UInt64, "ApprovalDuration",
1106
type_func = timedelta_to_milliseconds)
1107
host = notifychangeproperty(dbus.String, "Host")
1108
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1109
type_func =
1110
timedelta_to_milliseconds)
1111
extended_timeout = notifychangeproperty(
1112
dbus.UInt64, "ExtendedTimeout",
1113
type_func = timedelta_to_milliseconds)
1114
interval = notifychangeproperty(dbus.UInt64,
1115
"Interval",
1116
type_func =
1117
timedelta_to_milliseconds)
1118
checker_command = notifychangeproperty(dbus.String, "Checker")
1119
1120
del notifychangeproperty
663
664
@staticmethod
665
def _datetime_to_dbus(dt, variant_level=0):
666
"""Convert a UTC datetime.datetime() to a D-Bus type."""
667
return dbus.String(dt.isoformat(),
668
variant_level=variant_level)
669
670
def enable(self):
671
oldstate = getattr(self, u"enabled", False)
672
r = Client.enable(self)
673
if oldstate != self.enabled:
674
# Emit D-Bus signals
675
self.PropertyChanged(dbus.String(u"enabled"),
676
dbus.Boolean(True, variant_level=1))
677
self.PropertyChanged(
678
dbus.String(u"last_enabled"),
679
self._datetime_to_dbus(self.last_enabled,
680
variant_level=1))
681
return r
682
683
def disable(self, signal = True):
684
oldstate = getattr(self, u"enabled", False)
685
r = Client.disable(self)
686
if signal and oldstate != self.enabled:
687
# Emit D-Bus signal
688
self.PropertyChanged(dbus.String(u"enabled"),
689
dbus.Boolean(False, variant_level=1))
690
return r
1121
691
1122
692
def __del__(self, *args, **kwargs):
1123
693
try:
1124
694
self.remove_from_connection()
1125
695
except LookupError:
1126
696
pass
1127
if hasattr(DBusObjectWithProperties, "__del__"):
697
if hasattr(DBusObjectWithProperties, u"__del__"):
1128
698
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1129
699
Client.__del__(self, *args, **kwargs)
1130
700
1132
702
*args, **kwargs):
1133
703
self.checker_callback_tag = None
1134
704
self.checker = None
705
# Emit D-Bus signal
706
self.PropertyChanged(dbus.String(u"checker_running"),
707
dbus.Boolean(False, variant_level=1))
1135
708
if os.WIFEXITED(condition):
1136
709
exitstatus = os.WEXITSTATUS(condition)
1137
710
# Emit D-Bus signal
1147
720
return Client.checker_callback(self, pid, condition, command,
1148
721
*args, **kwargs)
1149
722
723
def checked_ok(self, *args, **kwargs):
724
r = Client.checked_ok(self, *args, **kwargs)
725
# Emit D-Bus signal
726
self.PropertyChanged(
727
dbus.String(u"last_checked_ok"),
728
(self._datetime_to_dbus(self.last_checked_ok,
729
variant_level=1)))
730
return r
731
1150
732
def start_checker(self, *args, **kwargs):
1151
733
old_checker = self.checker
1152
734
if self.checker is not None:
1159
741
and old_checker_pid != self.checker.pid):
1160
742
# Emit D-Bus signal
1161
743
self.CheckerStarted(self.current_checker_command)
1162
return r
1163
1164
def _reset_approved(self):
1165
self.approved = None
1166
return False
1167
1168
def approve(self, value=True):
1169
self.send_changedstate()
1170
self.approved = value
1171
gobject.timeout_add(timedelta_to_milliseconds
1172
(self.approval_duration),
1173
self._reset_approved)
1174
1175
1176
## D-Bus methods, signals & properties
1177
_interface = "se.recompile.Mandos.Client"
1178
1179
## Signals
744
self.PropertyChanged(
745
dbus.String(u"checker_running"),
746
dbus.Boolean(True, variant_level=1))
747
return r
748
749
def stop_checker(self, *args, **kwargs):
750
old_checker = getattr(self, u"checker", None)
751
r = Client.stop_checker(self, *args, **kwargs)
752
if (old_checker is not None
753
and getattr(self, u"checker", None) is None):
754
self.PropertyChanged(dbus.String(u"checker_running"),
755
dbus.Boolean(False, variant_level=1))
756
return r
757
758
## D-Bus methods & signals
759
_interface = u"se.bsnet.fukt.Mandos.Client"
760
761
# CheckedOK - method
762
@dbus.service.method(_interface)
763
def CheckedOK(self):
764
return self.checked_ok()
1180
765
1181
766
# CheckerCompleted - signal
1182
@dbus.service.signal(_interface, signature="nxs")
767
@dbus.service.signal(_interface, signature=u"nxs")
1183
768
def CheckerCompleted(self, exitcode, waitstatus, command):
1184
769
"D-Bus signal"
1185
770
pass
1186
771
1187
772
# CheckerStarted - signal
1188
@dbus.service.signal(_interface, signature="s")
773
@dbus.service.signal(_interface, signature=u"s")
1189
774
def CheckerStarted(self, command):
1190
775
"D-Bus signal"
1191
776
pass
1192
777
1193
778
# PropertyChanged - signal
1194
@dbus.service.signal(_interface, signature="sv")
779
@dbus.service.signal(_interface, signature=u"sv")
1195
780
def PropertyChanged(self, property, value):
1196
781
"D-Bus signal"
1197
782
pass
1198
783
1199
# GotSecret - signal
784
# ReceivedSecret - signal
1200
785
@dbus.service.signal(_interface)
1201
def GotSecret(self):
1202
"""D-Bus signal
1203
Is sent after a successful transfer of secret from the Mandos
1204
server to mandos-client
1205
"""
786
def ReceivedSecret(self):
787
"D-Bus signal"
1206
788
pass
1207
789
1208
790
# Rejected - signal
1209
@dbus.service.signal(_interface, signature="s")
1210
def Rejected(self, reason):
1211
"D-Bus signal"
1212
pass
1213
1214
# NeedApproval - signal
1215
@dbus.service.signal(_interface, signature="tb")
1216
def NeedApproval(self, timeout, default):
1217
"D-Bus signal"
1218
return self.need_approval()
1219
1220
# NeRwequest - signal
1221
@dbus.service.signal(_interface, signature="s")
1222
def NewRequest(self, ip):
1223
"""D-Bus signal
1224
Is sent after a client request a password.
1225
"""
1226
pass
1227
1228
## Methods
1229
1230
# Approve - method
1231
@dbus.service.method(_interface, in_signature="b")
1232
def Approve(self, value):
1233
self.approve(value)
1234
1235
# CheckedOK - method
1236
@dbus.service.method(_interface)
1237
def CheckedOK(self):
1238
self.checked_ok()
791
@dbus.service.signal(_interface)
792
def Rejected(self):
793
"D-Bus signal"
794
pass
1239
795
1240
796
# Enable - method
1241
797
@dbus.service.method(_interface)
1260
816
def StopChecker(self):
1261
817
self.stop_checker()
1262
818
1263
## Properties
1264
1265
# ApprovalPending - property
1266
@dbus_service_property(_interface, signature="b", access="read")
1267
def ApprovalPending_dbus_property(self):
1268
return dbus.Boolean(bool(self.approvals_pending))
1269
1270
# ApprovedByDefault - property
1271
@dbus_service_property(_interface, signature="b",
1272
access="readwrite")
1273
def ApprovedByDefault_dbus_property(self, value=None):
1274
if value is None: # get
1275
return dbus.Boolean(self.approved_by_default)
1276
self.approved_by_default = bool(value)
1277
1278
# ApprovalDelay - property
1279
@dbus_service_property(_interface, signature="t",
1280
access="readwrite")
1281
def ApprovalDelay_dbus_property(self, value=None):
1282
if value is None: # get
1283
return dbus.UInt64(self.approval_delay_milliseconds())
1284
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1285
1286
# ApprovalDuration - property
1287
@dbus_service_property(_interface, signature="t",
1288
access="readwrite")
1289
def ApprovalDuration_dbus_property(self, value=None):
1290
if value is None: # get
1291
return dbus.UInt64(timedelta_to_milliseconds(
1292
self.approval_duration))
1293
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1294
1295
# Name - property
1296
@dbus_service_property(_interface, signature="s", access="read")
1297
def Name_dbus_property(self):
819
# name - property
820
@dbus_service_property(_interface, signature=u"s", access=u"read")
821
def name_dbus_property(self):
1298
822
return dbus.String(self.name)
1299
823
1300
# Fingerprint - property
1301
@dbus_service_property(_interface, signature="s", access="read")
1302
def Fingerprint_dbus_property(self):
824
# fingerprint - property
825
@dbus_service_property(_interface, signature=u"s", access=u"read")
826
def fingerprint_dbus_property(self):
1303
827
return dbus.String(self.fingerprint)
1304
828
1305
# Host - property
1306
@dbus_service_property(_interface, signature="s",
1307
access="readwrite")
1308
def Host_dbus_property(self, value=None):
829
# host - property
830
@dbus_service_property(_interface, signature=u"s",
831
access=u"readwrite")
832
def host_dbus_property(self, value=None):
1309
833
if value is None: # get
1310
834
return dbus.String(self.host)
1311
self.host = unicode(value)
1312
1313
# Created - property
1314
@dbus_service_property(_interface, signature="s", access="read")
1315
def Created_dbus_property(self):
1316
return datetime_to_dbus(self.created)
1317
1318
# LastEnabled - property
1319
@dbus_service_property(_interface, signature="s", access="read")
1320
def LastEnabled_dbus_property(self):
1321
return datetime_to_dbus(self.last_enabled)
1322
1323
# Enabled - property
1324
@dbus_service_property(_interface, signature="b",
1325
access="readwrite")
1326
def Enabled_dbus_property(self, value=None):
835
self.host = value
836
# Emit D-Bus signal
837
self.PropertyChanged(dbus.String(u"host"),
838
dbus.String(value, variant_level=1))
839
840
# created - property
841
@dbus_service_property(_interface, signature=u"s", access=u"read")
842
def created_dbus_property(self):
843
return dbus.String(self._datetime_to_dbus(self.created))
844
845
# last_enabled - property
846
@dbus_service_property(_interface, signature=u"s", access=u"read")
847
def last_enabled_dbus_property(self):
848
if self.last_enabled is None:
849
return dbus.String(u"")
850
return dbus.String(self._datetime_to_dbus(self.last_enabled))
851
852
# enabled - property
853
@dbus_service_property(_interface, signature=u"b",
854
access=u"readwrite")
855
def enabled_dbus_property(self, value=None):
1327
856
if value is None: # get
1328
857
return dbus.Boolean(self.enabled)
1329
858
if value:
1331
860
else:
1332
861
self.disable()
1333
862
1334
# LastCheckedOK - property
1335
@dbus_service_property(_interface, signature="s",
1336
access="readwrite")
1337
def LastCheckedOK_dbus_property(self, value=None):
863
# last_checked_ok - property
864
@dbus_service_property(_interface, signature=u"s",
865
access=u"readwrite")
866
def last_checked_ok_dbus_property(self, value=None):
1338
867
if value is not None:
1339
868
self.checked_ok()
1340
869
return
1341
return datetime_to_dbus(self.last_checked_ok)
1342
1343
# Expires - property
1344
@dbus_service_property(_interface, signature="s", access="read")
1345
def Expires_dbus_property(self):
1346
return datetime_to_dbus(self.expires)
1347
1348
# LastApprovalRequest - property
1349
@dbus_service_property(_interface, signature="s", access="read")
1350
def LastApprovalRequest_dbus_property(self):
1351
return datetime_to_dbus(self.last_approval_request)
1352
1353
# Timeout - property
1354
@dbus_service_property(_interface, signature="t",
1355
access="readwrite")
1356
def Timeout_dbus_property(self, value=None):
870
if self.last_checked_ok is None:
871
return dbus.String(u"")
872
return dbus.String(self._datetime_to_dbus(self
873
.last_checked_ok))
874
875
# timeout - property
876
@dbus_service_property(_interface, signature=u"t",
877
access=u"readwrite")
878
def timeout_dbus_property(self, value=None):
1357
879
if value is None: # get
1358
880
return dbus.UInt64(self.timeout_milliseconds())
1359
881
self.timeout = datetime.timedelta(0, 0, 0, value)
1360
if getattr(self, "disable_initiator_tag", None) is None:
882
# Emit D-Bus signal
883
self.PropertyChanged(dbus.String(u"timeout"),
884
dbus.UInt64(value, variant_level=1))
885
if getattr(self, u"disable_initiator_tag", None) is None:
1361
886
return
1362
887
# Reschedule timeout
1363
888
gobject.source_remove(self.disable_initiator_tag)
1364
889
self.disable_initiator_tag = None
1365
self.expires = None
1366
time_to_die = timedelta_to_milliseconds((self
1367
.last_checked_ok
1368
+ self.timeout)
1369
- datetime.datetime
1370
.utcnow())
890
time_to_die = (self.
891
_timedelta_to_milliseconds((self
892
.last_checked_ok
893
+ self.timeout)
894
- datetime.datetime
895
.utcnow()))
1371
896
if time_to_die <= 0:
1372
897
# The timeout has passed
1373
898
self.disable()
1374
899
else:
1375
self.expires = (datetime.datetime.utcnow()
1376
+ datetime.timedelta(milliseconds =
1377
time_to_die))
1378
900
self.disable_initiator_tag = (gobject.timeout_add
1379
901
(time_to_die, self.disable))
1380
902
1381
# ExtendedTimeout - property
1382
@dbus_service_property(_interface, signature="t",
1383
access="readwrite")
1384
def ExtendedTimeout_dbus_property(self, value=None):
1385
if value is None: # get
1386
return dbus.UInt64(self.extended_timeout_milliseconds())
1387
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1388
1389
# Interval - property
1390
@dbus_service_property(_interface, signature="t",
1391
access="readwrite")
1392
def Interval_dbus_property(self, value=None):
903
# interval - property
904
@dbus_service_property(_interface, signature=u"t",
905
access=u"readwrite")
906
def interval_dbus_property(self, value=None):
1393
907
if value is None: # get
1394
908
return dbus.UInt64(self.interval_milliseconds())
1395
909
self.interval = datetime.timedelta(0, 0, 0, value)
1396
if getattr(self, "checker_initiator_tag", None) is None:
910
# Emit D-Bus signal
911
self.PropertyChanged(dbus.String(u"interval"),
912
dbus.UInt64(value, variant_level=1))
913
if getattr(self, u"checker_initiator_tag", None) is None:
1397
914
return
1398
if self.enabled:
1399
# Reschedule checker run
1400
gobject.source_remove(self.checker_initiator_tag)
1401
self.checker_initiator_tag = (gobject.timeout_add
1402
(value, self.start_checker))
1403
self.start_checker() # Start one now, too
1404
1405
# Checker - property
1406
@dbus_service_property(_interface, signature="s",
1407
access="readwrite")
1408
def Checker_dbus_property(self, value=None):
915
# Reschedule checker run
916
gobject.source_remove(self.checker_initiator_tag)
917
self.checker_initiator_tag = (gobject.timeout_add
918
(value, self.start_checker))
919
self.start_checker() # Start one now, too
920
921
# checker - property
922
@dbus_service_property(_interface, signature=u"s",
923
access=u"readwrite")
924
def checker_dbus_property(self, value=None):
1409
925
if value is None: # get
1410
926
return dbus.String(self.checker_command)
1411
self.checker_command = unicode(value)
927
self.checker_command = value
928
# Emit D-Bus signal
929
self.PropertyChanged(dbus.String(u"checker"),
930
dbus.String(self.checker_command,
931
variant_level=1))
1412
932
1413
# CheckerRunning - property
1414
@dbus_service_property(_interface, signature="b",
1415
access="readwrite")
1416
def CheckerRunning_dbus_property(self, value=None):
933
# checker_running - property
934
@dbus_service_property(_interface, signature=u"b",
935
access=u"readwrite")
936
def checker_running_dbus_property(self, value=None):
1417
937
if value is None: # get
1418
938
return dbus.Boolean(self.checker is not None)
1419
939
if value:
1421
941
else:
1422
942
self.stop_checker()
1423
943
1424
# ObjectPath - property
1425
@dbus_service_property(_interface, signature="o", access="read")
1426
def ObjectPath_dbus_property(self):
944
# object_path - property
945
@dbus_service_property(_interface, signature=u"o", access=u"read")
946
def object_path_dbus_property(self):
1427
947
return self.dbus_object_path # is already a dbus.ObjectPath
1428
948
1429
# Secret = property
1430
@dbus_service_property(_interface, signature="ay",
1431
access="write", byte_arrays=True)
1432
def Secret_dbus_property(self, value):
949
# secret = property
950
@dbus_service_property(_interface, signature=u"ay",
951
access=u"write", byte_arrays=True)
952
def secret_dbus_property(self, value):
1433
953
self.secret = str(value)
1434
954
1435
955
del _interface
1436
956
1437
957
1438
class ProxyClient(object):
1439
def __init__(self, child_pipe, fpr, address):
1440
self._pipe = child_pipe
1441
self._pipe.send(('init', fpr, address))
1442
if not self._pipe.recv():
1443
raise KeyError()
1444
1445
def __getattribute__(self, name):
1446
if name == '_pipe':
1447
return super(ProxyClient, self).__getattribute__(name)
1448
self._pipe.send(('getattr', name))
1449
data = self._pipe.recv()
1450
if data[0] == 'data':
1451
return data[1]
1452
if data[0] == 'function':
1453
def func(*args, **kwargs):
1454
self._pipe.send(('funcall', name, args, kwargs))
1455
return self._pipe.recv()[1]
1456
return func
1457
1458
def __setattr__(self, name, value):
1459
if name == '_pipe':
1460
return super(ProxyClient, self).__setattr__(name, value)
1461
self._pipe.send(('setattr', name, value))
1462
1463
1464
class ClientDBusTransitional(ClientDBus):
1465
__metaclass__ = AlternateDBusNamesMetaclass
1466
1467
1468
958
class ClientHandler(socketserver.BaseRequestHandler, object):
1469
959
"""A class to handle client connections.
1470
960
1472
962
Note: This will run in its own forked process."""
1473
963
1474
964
def handle(self):
1475
with contextlib.closing(self.server.child_pipe) as child_pipe:
1476
logger.info("TCP connection from: %s",
1477
unicode(self.client_address))
1478
logger.debug("Pipe FD: %d",
1479
self.server.child_pipe.fileno())
1480
965
logger.info(u"TCP connection from: %s",
966
unicode(self.client_address))
967
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
968
# Open IPC pipe to parent process
969
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
1481
970
session = (gnutls.connection
1482
971
.ClientSession(self.request,
1483
972
gnutls.connection
1484
973
.X509Credentials()))
1485
974
975
line = self.request.makefile().readline()
976
logger.debug(u"Protocol version: %r", line)
977
try:
978
if int(line.strip().split()[0]) > 1:
979
raise RuntimeError
980
except (ValueError, IndexError, RuntimeError), error:
981
logger.error(u"Unknown protocol version: %s", error)
982
return
983
1486
984
# Note: gnutls.connection.X509Credentials is really a
1487
985
# generic GnuTLS certificate credentials object so long as
1488
986
# no X.509 keys are added to it. Therefore, we can use it
1489
987
# here despite using OpenPGP certificates.
1490
988
1491
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1492
# "+AES-256-CBC", "+SHA1",
1493
# "+COMP-NULL", "+CTYPE-OPENPGP",
1494
# "+DHE-DSS"))
989
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
990
# u"+AES-256-CBC", u"+SHA1",
991
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
992
# u"+DHE-DSS"))
1495
993
# Use a fallback default, since this MUST be set.
1496
994
priority = self.server.gnutls_priority
1497
995
if priority is None:
1498
priority = "NORMAL"
996
priority = u"NORMAL"
1499
997
(gnutls.library.functions
1500
998
.gnutls_priority_set_direct(session._c_object,
1501
999
priority, None))
1502
1000
1503
# Start communication using the Mandos protocol
1504
# Get protocol number
1505
line = self.request.makefile().readline()
1506
logger.debug("Protocol version: %r", line)
1507
try:
1508
if int(line.strip().split()[0]) > 1:
1509
raise RuntimeError
1510
except (ValueError, IndexError, RuntimeError) as error:
1511
logger.error("Unknown protocol version: %s", error)
1512
return
1513
1514
# Start GnuTLS connection
1515
1001
try:
1516
1002
session.handshake()
1517
except gnutls.errors.GNUTLSError as error:
1518
logger.warning("Handshake failed: %s", error)
1003
except gnutls.errors.GNUTLSError, error:
1004
logger.warning(u"Handshake failed: %s", error)
1519
1005
# Do not run session.bye() here: the session is not
1520
1006
# established. Just abandon the request.
1521
1007
return
1522
logger.debug("Handshake succeeded")
1523
1524
approval_required = False
1008
logger.debug(u"Handshake succeeded")
1525
1009
try:
1526
try:
1527
fpr = self.fingerprint(self.peer_certificate
1528
(session))
1529
except (TypeError,
1530
gnutls.errors.GNUTLSError) as error:
1531
logger.warning("Bad certificate: %s", error)
1532
return
1533
logger.debug("Fingerprint: %s", fpr)
1534
1535
try:
1536
client = ProxyClient(child_pipe, fpr,
1537
self.client_address)
1538
except KeyError:
1539
return
1540
1541
if self.server.use_dbus:
1542
# Emit D-Bus signal
1543
client.NewRequest(str(self.client_address))
1544
1545
if client.approval_delay:
1546
delay = client.approval_delay
1547
client.approvals_pending += 1
1548
approval_required = True
1549
1550
while True:
1551
if not client.enabled:
1552
logger.info("Client %s is disabled",
1553
client.name)
1554
if self.server.use_dbus:
1555
# Emit D-Bus signal
1556
client.Rejected("Disabled")
1557
return
1558
1559
if client.approved or not client.approval_delay:
1560
#We are approved or approval is disabled
1561
break
1562
elif client.approved is None:
1563
logger.info("Client %s needs approval",
1564
client.name)
1565
if self.server.use_dbus:
1566
# Emit D-Bus signal
1567
client.NeedApproval(
1568
client.approval_delay_milliseconds(),
1569
client.approved_by_default)
1570
else:
1571
logger.warning("Client %s was not approved",
1572
client.name)
1573
if self.server.use_dbus:
1574
# Emit D-Bus signal
1575
client.Rejected("Denied")
1576
return
1577
1578
#wait until timeout or approved
1579
time = datetime.datetime.now()
1580
client.changedstate.acquire()
1581
(client.changedstate.wait
1582
(float(client.timedelta_to_milliseconds(delay)
1583
/ 1000)))
1584
client.changedstate.release()
1585
time2 = datetime.datetime.now()
1586
if (time2 - time) >= delay:
1587
if not client.approved_by_default:
1588
logger.warning("Client %s timed out while"
1589
" waiting for approval",
1590
client.name)
1591
if self.server.use_dbus:
1592
# Emit D-Bus signal
1593
client.Rejected("Approval timed out")
1594
return
1595
else:
1596
break
1597
else:
1598
delay -= time2 - time
1599
1600
sent_size = 0
1601
while sent_size < len(client.secret):
1602
try:
1603
sent = session.send(client.secret[sent_size:])
1604
except gnutls.errors.GNUTLSError as error:
1605
logger.warning("gnutls send failed")
1606
return
1607
logger.debug("Sent: %d, remaining: %d",
1608
sent, len(client.secret)
1609
- (sent_size + sent))
1610
sent_size += sent
1611
1612
logger.info("Sending secret to %s", client.name)
1613
# bump the timeout using extended_timeout
1614
client.checked_ok(client.extended_timeout)
1615
if self.server.use_dbus:
1616
# Emit D-Bus signal
1617
client.GotSecret()
1010
fpr = self.fingerprint(self.peer_certificate(session))
1011
except (TypeError, gnutls.errors.GNUTLSError), error:
1012
logger.warning(u"Bad certificate: %s", error)
1013
session.bye()
1014
return
1015
logger.debug(u"Fingerprint: %s", fpr)
1618
1016
1619
finally:
1620
if approval_required:
1621
client.approvals_pending -= 1
1622
try:
1623
session.bye()
1624
except gnutls.errors.GNUTLSError as error:
1625
logger.warning("GnuTLS bye failed")
1017
for c in self.server.clients:
1018
if c.fingerprint == fpr:
1019
client = c
1020
break
1021
else:
1022
ipc.write(u"NOTFOUND %s %s\n"
1023
% (fpr, unicode(self.client_address)))
1024
session.bye()
1025
return
1026
# Have to check if client.still_valid(), since it is
1027
# possible that the client timed out while establishing
1028
# the GnuTLS session.
1029
if not client.still_valid():
1030
ipc.write(u"INVALID %s\n" % client.name)
1031
session.bye()
1032
return
1033
ipc.write(u"SENDING %s\n" % client.name)
1034
sent_size = 0
1035
while sent_size < len(client.secret):
1036
sent = session.send(client.secret[sent_size:])
1037
logger.debug(u"Sent: %d, remaining: %d",
1038
sent, len(client.secret)
1039
- (sent_size + sent))
1040
sent_size += sent
1041
session.bye()
1626
1042
1627
1043
@staticmethod
1628
1044
def peer_certificate(session):
1638
1054
.gnutls_certificate_get_peers
1639
1055
(session._c_object, ctypes.byref(list_size)))
1640
1056
if not bool(cert_list) and list_size.value != 0:
1641
raise gnutls.errors.GNUTLSError("error getting peer"
1642
" certificate")
1057
raise gnutls.errors.GNUTLSError(u"error getting peer"
1058
u" certificate")
1643
1059
if list_size.value == 0:
1644
1060
return None
1645
1061
cert = cert_list[0]
1671
1087
if crtverify.value != 0:
1672
1088
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1673
1089
raise (gnutls.errors.CertificateSecurityError
1674
("Verify failed"))
1090
(u"Verify failed"))
1675
1091
# New buffer for the fingerprint
1676
1092
buf = ctypes.create_string_buffer(20)
1677
1093
buf_len = ctypes.c_size_t()
1684
1100
# Convert the buffer to a Python bytestring
1685
1101
fpr = ctypes.string_at(buf, buf_len.value)
1686
1102
# Convert the bytestring to hexadecimal notation
1687
hex_fpr = binascii.hexlify(fpr).upper()
1103
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
1688
1104
return hex_fpr
1689
1105
1690
1106
1691
class MultiprocessingMixIn(object):
1692
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1693
def sub_process_main(self, request, address):
1694
try:
1695
self.finish_request(request, address)
1696
except Exception:
1697
self.handle_error(request, address)
1698
self.close_request(request)
1699
1700
def process_request(self, request, address):
1701
"""Start a new process to process the request."""
1702
proc = multiprocessing.Process(target = self.sub_process_main,
1703
args = (request,
1704
address))
1705
proc.start()
1706
return proc
1707
1708
1709
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1710
""" adds a pipe to the MixIn """
1107
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1108
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
1711
1109
def process_request(self, request, client_address):
1712
1110
"""Overrides and wraps the original process_request().
1713
1111
1714
1112
This function creates a new pipe in self.pipe
1715
1113
"""
1716
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1717
1718
proc = MultiprocessingMixIn.process_request(self, request,
1719
client_address)
1720
self.child_pipe.close()
1721
self.add_pipe(parent_pipe, proc)
1722
1723
def add_pipe(self, parent_pipe, proc):
1114
self.pipe = os.pipe()
1115
super(ForkingMixInWithPipe,
1116
self).process_request(request, client_address)
1117
os.close(self.pipe[1]) # close write end
1118
self.add_pipe(self.pipe[0])
1119
def add_pipe(self, pipe):
1724
1120
"""Dummy function; override as necessary"""
1725
raise NotImplementedError
1726
1727
1728
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1121
os.close(pipe)
1122
1123
1124
class IPv6_TCPServer(ForkingMixInWithPipe,
1729
1125
socketserver.TCPServer, object):
1730
1126
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1731
1127
1747
1143
bind to an address or port if they were not specified."""
1748
1144
if self.interface is not None:
1749
1145
if SO_BINDTODEVICE is None:
1750
logger.error("SO_BINDTODEVICE does not exist;"
1751
" cannot bind to interface %s",
1146
logger.error(u"SO_BINDTODEVICE does not exist;"
1147
u" cannot bind to interface %s",
1752
1148
self.interface)
1753
1149
else:
1754
1150
try:
1755
1151
self.socket.setsockopt(socket.SOL_SOCKET,
1756
1152
SO_BINDTODEVICE,
1757
1153
str(self.interface
1758
+ '\0'))
1759
except socket.error as error:
1154
+ u'\0'))
1155
except socket.error, error:
1760
1156
if error[0] == errno.EPERM:
1761
logger.error("No permission to"
1762
" bind to interface %s",
1157
logger.error(u"No permission to"
1158
u" bind to interface %s",
1763
1159
self.interface)
1764
1160
elif error[0] == errno.ENOPROTOOPT:
1765
logger.error("SO_BINDTODEVICE not available;"
1766
" cannot bind to interface %s",
1161
logger.error(u"SO_BINDTODEVICE not available;"
1162
u" cannot bind to interface %s",
1767
1163
self.interface)
1768
1164
else:
1769
1165
raise
1771
1167
if self.server_address[0] or self.server_address[1]:
1772
1168
if not self.server_address[0]:
1773
1169
if self.address_family == socket.AF_INET6:
1774
any_address = "::" # in6addr_any
1170
any_address = u"::" # in6addr_any
1775
1171
else:
1776
1172
any_address = socket.INADDR_ANY
1777
1173
self.server_address = (any_address,
1804
1200
self.enabled = False
1805
1201
self.clients = clients
1806
1202
if self.clients is None:
1807
self.clients = {}
1203
self.clients = set()
1808
1204
self.use_dbus = use_dbus
1809
1205
self.gnutls_priority = gnutls_priority
1810
1206
IPv6_TCPServer.__init__(self, server_address,
1814
1210
def server_activate(self):
1815
1211
if self.enabled:
1816
1212
return socketserver.TCPServer.server_activate(self)
1817
1818
1213
def enable(self):
1819
1214
self.enabled = True
1820
1821
def add_pipe(self, parent_pipe, proc):
1215
def add_pipe(self, pipe):
1822
1216
# Call "handle_ipc" for both data and EOF events
1823
gobject.io_add_watch(parent_pipe.fileno(),
1824
gobject.IO_IN | gobject.IO_HUP,
1825
functools.partial(self.handle_ipc,
1826
parent_pipe =
1827
parent_pipe,
1828
proc = proc))
1829
1830
def handle_ipc(self, source, condition, parent_pipe=None,
1831
proc = None, client_object=None):
1217
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1218
self.handle_ipc)
1219
def handle_ipc(self, source, condition, file_objects={}):
1832
1220
condition_names = {
1833
gobject.IO_IN: "IN", # There is data to read.
1834
gobject.IO_OUT: "OUT", # Data can be written (without
1221
gobject.IO_IN: u"IN", # There is data to read.
1222
gobject.IO_OUT: u"OUT", # Data can be written (without
1835
1223
# blocking).
1836
gobject.IO_PRI: "PRI", # There is urgent data to read.
1837
gobject.IO_ERR: "ERR", # Error condition.
1838
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1224
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1225
gobject.IO_ERR: u"ERR", # Error condition.
1226
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1839
1227
# broken, usually for pipes and
1840
1228
# sockets).
1841
1229
}
1843
1231
for cond, name in
1844
1232
condition_names.iteritems()
1845
1233
if cond & condition)
1846
# error, or the other end of multiprocessing.Pipe has closed
1847
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1848
# Wait for other process to exit
1849
proc.join()
1850
return False
1851
1852
# Read a request from the child
1853
request = parent_pipe.recv()
1854
command = request[0]
1855
1856
if command == 'init':
1857
fpr = request[1]
1858
address = request[2]
1859
1860
for c in self.clients.itervalues():
1861
if c.fingerprint == fpr:
1862
client = c
1863
break
1864
else:
1865
logger.info("Client not found for fingerprint: %s, ad"
1866
"dress: %s", fpr, address)
1867
if self.use_dbus:
1868
# Emit D-Bus signal
1869
mandos_dbus_service.ClientNotFound(fpr,
1870
address[0])
1871
parent_pipe.send(False)
1872
return False
1873
1874
gobject.io_add_watch(parent_pipe.fileno(),
1875
gobject.IO_IN | gobject.IO_HUP,
1876
functools.partial(self.handle_ipc,
1877
parent_pipe =
1878
parent_pipe,
1879
proc = proc,
1880
client_object =
1881
client))
1882
parent_pipe.send(True)
1883
# remove the old hook in favor of the new above hook on
1884
# same fileno
1885
return False
1886
if command == 'funcall':
1887
funcname = request[1]
1888
args = request[2]
1889
kwargs = request[3]
1890
1891
parent_pipe.send(('data', getattr(client_object,
1892
funcname)(*args,
1893
**kwargs)))
1894
1895
if command == 'getattr':
1896
attrname = request[1]
1897
if callable(client_object.__getattribute__(attrname)):
1898
parent_pipe.send(('function',))
1899
else:
1900
parent_pipe.send(('data', client_object
1901
.__getattribute__(attrname)))
1902
1903
if command == 'setattr':
1904
attrname = request[1]
1905
value = request[2]
1906
setattr(client_object, attrname, value)
1907
1234
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1235
conditions_string)
1236
1237
# Turn the pipe file descriptor into a Python file object
1238
if source not in file_objects:
1239
file_objects[source] = os.fdopen(source, u"r", 1)
1240
1241
# Read a line from the file object
1242
cmdline = file_objects[source].readline()
1243
if not cmdline: # Empty line means end of file
1244
# close the IPC pipe
1245
file_objects[source].close()
1246
del file_objects[source]
1247
1248
# Stop calling this function
1249
return False
1250
1251
logger.debug(u"IPC command: %r", cmdline)
1252
1253
# Parse and act on command
1254
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1255
1256
if cmd == u"NOTFOUND":
1257
logger.warning(u"Client not found for fingerprint: %s",
1258
args)
1259
if self.use_dbus:
1260
# Emit D-Bus signal
1261
mandos_dbus_service.ClientNotFound(args)
1262
elif cmd == u"INVALID":
1263
for client in self.clients:
1264
if client.name == args:
1265
logger.warning(u"Client %s is invalid", args)
1266
if self.use_dbus:
1267
# Emit D-Bus signal
1268
client.Rejected()
1269
break
1270
else:
1271
logger.error(u"Unknown client %s is invalid", args)
1272
elif cmd == u"SENDING":
1273
for client in self.clients:
1274
if client.name == args:
1275
logger.info(u"Sending secret to %s", client.name)
1276
client.checked_ok()
1277
if self.use_dbus:
1278
# Emit D-Bus signal
1279
client.ReceivedSecret()
1280
break
1281
else:
1282
logger.error(u"Sending secret to unknown client %s",
1283
args)
1284
else:
1285
logger.error(u"Unknown IPC command: %r", cmdline)
1286
1287
# Keep calling this function
1908
1288
return True
1909
1289
1910
1290
1911
1291
def string_to_delta(interval):
1912
1292
"""Parse a string and return a datetime.timedelta
1913
1293
1914
>>> string_to_delta('7d')
1294
>>> string_to_delta(u'7d')
1915
1295
datetime.timedelta(7)
1916
>>> string_to_delta('60s')
1296
>>> string_to_delta(u'60s')
1917
1297
datetime.timedelta(0, 60)
1918
>>> string_to_delta('60m')
1298
>>> string_to_delta(u'60m')
1919
1299
datetime.timedelta(0, 3600)
1920
>>> string_to_delta('24h')
1300
>>> string_to_delta(u'24h')
1921
1301
datetime.timedelta(1)
1922
>>> string_to_delta('1w')
1302
>>> string_to_delta(u'1w')
1923
1303
datetime.timedelta(7)
1924
>>> string_to_delta('5m 30s')
1304
>>> string_to_delta(u'5m 30s')
1925
1305
datetime.timedelta(0, 330)
1926
1306
"""
1927
1307
timevalue = datetime.timedelta(0)
1929
1309
try:
1930
1310
suffix = unicode(s[-1])
1931
1311
value = int(s[:-1])
1932
if suffix == "d":
1312
if suffix == u"d":
1933
1313
delta = datetime.timedelta(value)
1934
elif suffix == "s":
1314
elif suffix == u"s":
1935
1315
delta = datetime.timedelta(0, value)
1936
elif suffix == "m":
1316
elif suffix == u"m":
1937
1317
delta = datetime.timedelta(0, 0, 0, 0, value)
1938
elif suffix == "h":
1318
elif suffix == u"h":
1939
1319
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1940
elif suffix == "w":
1320
elif suffix == u"w":
1941
1321
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1942
1322
else:
1943
raise ValueError("Unknown suffix %r" % suffix)
1944
except (ValueError, IndexError) as e:
1945
raise ValueError(*(e.args))
1323
raise ValueError
1324
except (ValueError, IndexError):
1325
raise ValueError
1946
1326
timevalue += delta
1947
1327
return timevalue
1948
1328
1949
1329
1330
def if_nametoindex(interface):
1331
"""Call the C function if_nametoindex(), or equivalent
1332
1333
Note: This function cannot accept a unicode string."""
1334
global if_nametoindex
1335
try:
1336
if_nametoindex = (ctypes.cdll.LoadLibrary
1337
(ctypes.util.find_library(u"c"))
1338
.if_nametoindex)
1339
except (OSError, AttributeError):
1340
logger.warning(u"Doing if_nametoindex the hard way")
1341
def if_nametoindex(interface):
1342
"Get an interface index the hard way, i.e. using fcntl()"
1343
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1344
with closing(socket.socket()) as s:
1345
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1346
struct.pack(str(u"16s16x"),
1347
interface))
1348
interface_index = struct.unpack(str(u"I"),
1349
ifreq[16:20])[0]
1350
return interface_index
1351
return if_nametoindex(interface)
1352
1353
1950
1354
def daemon(nochdir = False, noclose = False):
1951
1355
"""See daemon(3). Standard BSD Unix function.
1952
1356
1955
1359
sys.exit()
1956
1360
os.setsid()
1957
1361
if not nochdir:
1958
os.chdir("/")
1362
os.chdir(u"/")
1959
1363
if os.fork():
1960
1364
sys.exit()
1961
1365
if not noclose:
1963
1367
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1964
1368
if not stat.S_ISCHR(os.fstat(null).st_mode):
1965
1369
raise OSError(errno.ENODEV,
1966
"%s not a character device"
1967
% os.path.devnull)
1370
u"/dev/null not a character device")
1968
1371
os.dup2(null, sys.stdin.fileno())
1969
1372
os.dup2(null, sys.stdout.fileno())
1970
1373
os.dup2(null, sys.stderr.fileno())
1977
1380
##################################################################
1978
1381
# Parsing of options, both command line and config file
1979
1382
1980
parser = argparse.ArgumentParser()
1981
parser.add_argument("-v", "--version", action="version",
1982
version = "%%(prog)s %s" % version,
1983
help="show version number and exit")
1984
parser.add_argument("-i", "--interface", metavar="IF",
1985
help="Bind to interface IF")
1986
parser.add_argument("-a", "--address",
1987
help="Address to listen for requests on")
1988
parser.add_argument("-p", "--port", type=int,
1989
help="Port number to receive requests on")
1990
parser.add_argument("--check", action="store_true",
1991
help="Run self-test")
1992
parser.add_argument("--debug", action="store_true",
1993
help="Debug mode; run in foreground and log"
1994
" to terminal")
1995
parser.add_argument("--debuglevel", metavar="LEVEL",
1996
help="Debug level for stdout output")
1997
parser.add_argument("--priority", help="GnuTLS"
1998
" priority string (see GnuTLS documentation)")
1999
parser.add_argument("--servicename",
2000
metavar="NAME", help="Zeroconf service name")
2001
parser.add_argument("--configdir",
2002
default="/etc/mandos", metavar="DIR",
2003
help="Directory to search for configuration"
2004
" files")
2005
parser.add_argument("--no-dbus", action="store_false",
2006
dest="use_dbus", help="Do not provide D-Bus"
2007
" system bus interface")
2008
parser.add_argument("--no-ipv6", action="store_false",
2009
dest="use_ipv6", help="Do not use IPv6")
2010
parser.add_argument("--no-restore", action="store_false",
2011
dest="restore", help="Do not restore stored"
2012
" state")
2013
parser.add_argument("--statedir", metavar="DIR",
2014
help="Directory to save/restore state in")
2015
2016
options = parser.parse_args()
1383
parser = optparse.OptionParser(version = "%%prog %s" % version)
1384
parser.add_option("-i", u"--interface", type=u"string",
1385
metavar="IF", help=u"Bind to interface IF")
1386
parser.add_option("-a", u"--address", type=u"string",
1387
help=u"Address to listen for requests on")
1388
parser.add_option("-p", u"--port", type=u"int",
1389
help=u"Port number to receive requests on")
1390
parser.add_option("--check", action=u"store_true",
1391
help=u"Run self-test")
1392
parser.add_option("--debug", action=u"store_true",
1393
help=u"Debug mode; run in foreground and log to"
1394
u" terminal")
1395
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1396
u" priority string (see GnuTLS documentation)")
1397
parser.add_option("--servicename", type=u"string",
1398
metavar=u"NAME", help=u"Zeroconf service name")
1399
parser.add_option("--configdir", type=u"string",
1400
default=u"/etc/mandos", metavar=u"DIR",
1401
help=u"Directory to search for configuration"
1402
u" files")
1403
parser.add_option("--no-dbus", action=u"store_false",
1404
dest=u"use_dbus", help=u"Do not provide D-Bus"
1405
u" system bus interface")
1406
parser.add_option("--no-ipv6", action=u"store_false",
1407
dest=u"use_ipv6", help=u"Do not use IPv6")
1408
options = parser.parse_args()[0]
2017
1409
2018
1410
if options.check:
2019
1411
import doctest
2021
1413
sys.exit()
2022
1414
2023
1415
# Default values for config file for server-global settings
2024
server_defaults = { "interface": "",
2025
"address": "",
2026
"port": "",
2027
"debug": "False",
2028
"priority":
2029
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2030
"servicename": "Mandos",
2031
"use_dbus": "True",
2032
"use_ipv6": "True",
2033
"debuglevel": "",
2034
"restore": "True",
2035
"statedir": "/var/lib/mandos"
1416
server_defaults = { u"interface": u"",
1417
u"address": u"",
1418
u"port": u"",
1419
u"debug": u"False",
1420
u"priority":
1421
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1422
u"servicename": u"Mandos",
1423
u"use_dbus": u"True",
1424
u"use_ipv6": u"True",
2036
1425
}
2037
1426
2038
1427
# Parse config file for server-global settings
2039
1428
server_config = configparser.SafeConfigParser(server_defaults)
2040
1429
del server_defaults
2041
1430
server_config.read(os.path.join(options.configdir,
2042
"mandos.conf"))
1431
u"mandos.conf"))
2043
1432
# Convert the SafeConfigParser object to a dict
2044
1433
server_settings = server_config.defaults()
2045
1434
# Use the appropriate methods on the non-string config options
2046
for option in ("debug", "use_dbus", "use_ipv6"):
2047
server_settings[option] = server_config.getboolean("DEFAULT",
1435
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1436
server_settings[option] = server_config.getboolean(u"DEFAULT",
2048
1437
option)
2049
1438
if server_settings["port"]:
2050
server_settings["port"] = server_config.getint("DEFAULT",
2051
"port")
1439
server_settings["port"] = server_config.getint(u"DEFAULT",
1440
u"port")
2052
1441
del server_config
2053
1442
2054
1443
# Override the settings from the config file with command line
2055
1444
# options, if set.
2056
for option in ("interface", "address", "port", "debug",
2057
"priority", "servicename", "configdir",
2058
"use_dbus", "use_ipv6", "debuglevel", "restore",
2059
"statedir"):
1445
for option in (u"interface", u"address", u"port", u"debug",
1446
u"priority", u"servicename", u"configdir",
1447
u"use_dbus", u"use_ipv6"):
2060
1448
value = getattr(options, option)
2061
1449
if value is not None:
2062
1450
server_settings[option] = value
2070
1458
##################################################################
2071
1459
2072
1460
# For convenience
2073
debug = server_settings["debug"]
2074
debuglevel = server_settings["debuglevel"]
2075
use_dbus = server_settings["use_dbus"]
2076
use_ipv6 = server_settings["use_ipv6"]
2077
stored_state_path = os.path.join(server_settings["statedir"],
2078
stored_state_file)
2079
2080
if debug:
2081
initlogger(logging.DEBUG)
2082
else:
2083
if not debuglevel:
2084
initlogger()
2085
else:
2086
level = getattr(logging, debuglevel.upper())
2087
initlogger(level)
2088
2089
if server_settings["servicename"] != "Mandos":
1461
debug = server_settings[u"debug"]
1462
use_dbus = server_settings[u"use_dbus"]
1463
use_ipv6 = server_settings[u"use_ipv6"]
1464
1465
if not debug:
1466
syslogger.setLevel(logging.WARNING)
1467
console.setLevel(logging.WARNING)
1468
1469
if server_settings[u"servicename"] != u"Mandos":
2090
1470
syslogger.setFormatter(logging.Formatter
2091
('Mandos (%s) [%%(process)d]:'
2092
' %%(levelname)s: %%(message)s'
2093
% server_settings["servicename"]))
1471
(u'Mandos (%s) [%%(process)d]:'
1472
u' %%(levelname)s: %%(message)s'
1473
% server_settings[u"servicename"]))
2094
1474
2095
1475
# Parse config file with clients
2096
client_config = configparser.SafeConfigParser(Client.client_defaults)
2097
client_config.read(os.path.join(server_settings["configdir"],
2098
"clients.conf"))
1476
client_defaults = { u"timeout": u"1h",
1477
u"interval": u"5m",
1478
u"checker": u"fping -q -- %%(host)s",
1479
u"host": u"",
1480
}
1481
client_config = configparser.SafeConfigParser(client_defaults)
1482
client_config.read(os.path.join(server_settings[u"configdir"],
1483
u"clients.conf"))
2099
1484
2100
1485
global mandos_dbus_service
2101
1486
mandos_dbus_service = None
2102
1487
2103
tcp_server = MandosServer((server_settings["address"],
2104
server_settings["port"]),
1488
tcp_server = MandosServer((server_settings[u"address"],
1489
server_settings[u"port"]),
2105
1490
ClientHandler,
2106
interface=(server_settings["interface"]
2107
or None),
1491
interface=server_settings[u"interface"],
2108
1492
use_ipv6=use_ipv6,
2109
1493
gnutls_priority=
2110
server_settings["priority"],
1494
server_settings[u"priority"],
2111
1495
use_dbus=use_dbus)
2112
if not debug:
2113
pidfilename = "/var/run/mandos.pid"
2114
try:
2115
pidfile = open(pidfilename, "w")
2116
except IOError:
2117
logger.error("Could not open file %r", pidfilename)
1496
pidfilename = u"/var/run/mandos.pid"
1497
try:
1498
pidfile = open(pidfilename, u"w")
1499
except IOError:
1500
logger.error(u"Could not open file %r", pidfilename)
2118
1501
2119
1502
try:
2120
uid = pwd.getpwnam("_mandos").pw_uid
2121
gid = pwd.getpwnam("_mandos").pw_gid
1503
uid = pwd.getpwnam(u"_mandos").pw_uid
1504
gid = pwd.getpwnam(u"_mandos").pw_gid
2122
1505
except KeyError:
2123
1506
try:
2124
uid = pwd.getpwnam("mandos").pw_uid
2125
gid = pwd.getpwnam("mandos").pw_gid
1507
uid = pwd.getpwnam(u"mandos").pw_uid
1508
gid = pwd.getpwnam(u"mandos").pw_gid
2126
1509
except KeyError:
2127
1510
try:
2128
uid = pwd.getpwnam("nobody").pw_uid
2129
gid = pwd.getpwnam("nobody").pw_gid
1511
uid = pwd.getpwnam(u"nobody").pw_uid
1512
gid = pwd.getpwnam(u"nobody").pw_gid
2130
1513
except KeyError:
2131
1514
uid = 65534
2132
1515
gid = 65534
2133
1516
try:
2134
1517
os.setgid(gid)
2135
1518
os.setuid(uid)
2136
except OSError as error:
1519
except OSError, error:
2137
1520
if error[0] != errno.EPERM:
2138
1521
raise error
2139
1522
1523
# Enable all possible GnuTLS debugging
2140
1524
if debug:
2141
# Enable all possible GnuTLS debugging
2142
2143
1525
# "Use a log level over 10 to enable all debugging options."
2144
1526
# - GnuTLS manual
2145
1527
gnutls.library.functions.gnutls_global_set_log_level(11)
2146
1528
2147
1529
@gnutls.library.types.gnutls_log_func
2148
1530
def debug_gnutls(level, string):
2149
logger.debug("GnuTLS: %s", string[:-1])
1531
logger.debug(u"GnuTLS: %s", string[:-1])
2150
1532
2151
1533
(gnutls.library.functions
2152
1534
.gnutls_global_set_log_function(debug_gnutls))
2153
2154
# Redirect stdin so all checkers get /dev/null
2155
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2156
os.dup2(null, sys.stdin.fileno())
2157
if null > 2:
2158
os.close(null)
2159
else:
2160
# No console logging
2161
logger.removeHandler(console)
2162
2163
# Need to fork before connecting to D-Bus
2164
if not debug:
2165
# Close all input and output, do double fork, etc.
2166
daemon()
2167
2168
gobject.threads_init()
2169
1535
2170
1536
global main_loop
2171
1537
# From the Avahi example code
2174
1540
bus = dbus.SystemBus()
2175
1541
# End of Avahi example code
2176
1542
if use_dbus:
2177
try:
2178
bus_name = dbus.service.BusName("se.recompile.Mandos",
2179
bus, do_not_queue=True)
2180
old_bus_name = (dbus.service.BusName
2181
("se.bsnet.fukt.Mandos", bus,
2182
do_not_queue=True))
2183
except dbus.exceptions.NameExistsException as e:
2184
logger.error(unicode(e) + ", disabling D-Bus")
2185
use_dbus = False
2186
server_settings["use_dbus"] = False
2187
tcp_server.use_dbus = False
1543
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
2188
1544
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2189
service = AvahiServiceToSyslog(name =
2190
server_settings["servicename"],
2191
servicetype = "_mandos._tcp",
2192
protocol = protocol, bus = bus)
1545
service = AvahiService(name = server_settings[u"servicename"],
1546
servicetype = u"_mandos._tcp",
1547
protocol = protocol, bus = bus)
2193
1548
if server_settings["interface"]:
2194
1549
service.interface = (if_nametoindex
2195
(str(server_settings["interface"])))
2196
2197
global multiprocessing_manager
2198
multiprocessing_manager = multiprocessing.Manager()
1550
(str(server_settings[u"interface"])))
2199
1551
2200
1552
client_class = Client
2201
1553
if use_dbus:
2202
client_class = functools.partial(ClientDBusTransitional,
2203
bus = bus)
2204
2205
client_settings = Client.config_parser(client_config)
2206
old_client_settings = {}
2207
clients_data = {}
2208
2209
# Get client data and settings from last running state.
2210
if server_settings["restore"]:
2211
try:
2212
with open(stored_state_path, "rb") as stored_state:
2213
clients_data, old_client_settings = (pickle.load
2214
(stored_state))
2215
os.remove(stored_state_path)
2216
except IOError as e:
2217
logger.warning("Could not load persistent state: {0}"
2218
.format(e))
2219
if e.errno != errno.ENOENT:
2220
raise
2221
except EOFError as e:
2222
logger.warning("Could not load persistent state: "
2223
"EOFError: {0}".format(e))
2224
2225
with PGPEngine() as pgp:
2226
for client_name, client in clients_data.iteritems():
2227
# Decide which value to use after restoring saved state.
2228
# We have three different values: Old config file,
2229
# new config file, and saved state.
2230
# New config value takes precedence if it differs from old
2231
# config value, otherwise use saved state.
2232
for name, value in client_settings[client_name].items():
2233
try:
2234
# For each value in new config, check if it
2235
# differs from the old config value (Except for
2236
# the "secret" attribute)
2237
if (name != "secret" and
2238
value != old_client_settings[client_name]
2239
[name]):
2240
client[name] = value
2241
except KeyError:
2242
pass
2243
2244
# Clients who has passed its expire date can still be
2245
# enabled if its last checker was successful. Clients
2246
# whose checker failed before we stored its state is
2247
# assumed to have failed all checkers during downtime.
2248
if client["enabled"]:
2249
if datetime.datetime.utcnow() >= client["expires"]:
2250
if not client["last_checked_ok"]:
2251
logger.warning(
2252
"disabling client {0} - Client never "
2253
"performed a successfull checker"
2254
.format(client["name"]))
2255
client["enabled"] = False
2256
elif client["last_checker_status"] != 0:
2257
logger.warning(
2258
"disabling client {0} - Client "
2259
"last checker failed with error code {1}"
2260
.format(client["name"],
2261
client["last_checker_status"]))
2262
client["enabled"] = False
2263
else:
2264
client["expires"] = (datetime.datetime
2265
.utcnow()
2266
+ client["timeout"])
2267
2268
try:
2269
client["secret"] = (
2270
pgp.decrypt(client["encrypted_secret"],
2271
client_settings[client_name]
2272
["secret"]))
2273
except PGPError:
2274
# If decryption fails, we use secret from new settings
2275
logger.debug("Failed to decrypt {0} old secret"
2276
.format(client_name))
2277
client["secret"] = (
2278
client_settings[client_name]["secret"])
2279
2280
2281
# Add/remove clients based on new changes made to config
2282
for client_name in set(old_client_settings) - set(client_settings):
2283
del clients_data[client_name]
2284
for client_name in set(client_settings) - set(old_client_settings):
2285
clients_data[client_name] = client_settings[client_name]
2286
2287
# Create clients all clients
2288
for client_name, client in clients_data.iteritems():
2289
tcp_server.clients[client_name] = client_class(
2290
name = client_name, settings = client)
2291
1554
client_class = functools.partial(ClientDBus, bus = bus)
1555
tcp_server.clients.update(set(
1556
client_class(name = section,
1557
config= dict(client_config.items(section)))
1558
for section in client_config.sections()))
2292
1559
if not tcp_server.clients:
2293
logger.warning("No clients defined")
1560
logger.warning(u"No clients defined")
1561
1562
if debug:
1563
# Redirect stdin so all checkers get /dev/null
1564
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1565
os.dup2(null, sys.stdin.fileno())
1566
if null > 2:
1567
os.close(null)
1568
else:
1569
# No console logging
1570
logger.removeHandler(console)
1571
# Close all input and output, do double fork, etc.
1572
daemon()
1573
1574
try:
1575
with closing(pidfile):
1576
pid = os.getpid()
1577
pidfile.write(str(pid) + "\n")
1578
del pidfile
1579
except IOError:
1580
logger.error(u"Could not write to file %r with PID %d",
1581
pidfilename, pid)
1582
except NameError:
1583
# "pidfile" was never created
1584
pass
1585
del pidfilename
1586
1587
def cleanup():
1588
"Cleanup function; run on exit"
1589
service.cleanup()
2294
1590
1591
while tcp_server.clients:
1592
client = tcp_server.clients.pop()
1593
client.disable_hook = None
1594
client.disable()
1595
1596
atexit.register(cleanup)
1597
2295
1598
if not debug:
2296
try:
2297
with pidfile:
2298
pid = os.getpid()
2299
pidfile.write(str(pid) + "\n".encode("utf-8"))
2300
del pidfile
2301
except IOError:
2302
logger.error("Could not write to file %r with PID %d",
2303
pidfilename, pid)
2304
except NameError:
2305
# "pidfile" was never created
2306
pass
2307
del pidfilename
2308
1599
signal.signal(signal.SIGINT, signal.SIG_IGN)
2309
2310
1600
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2311
1601
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2312
1602
2314
1604
class MandosDBusService(dbus.service.Object):
2315
1605
"""A D-Bus proxy object"""
2316
1606
def __init__(self):
2317
dbus.service.Object.__init__(self, bus, "/")
2318
_interface = "se.recompile.Mandos"
2319
2320
@dbus.service.signal(_interface, signature="o")
2321
def ClientAdded(self, objpath):
2322
"D-Bus signal"
2323
pass
2324
2325
@dbus.service.signal(_interface, signature="ss")
2326
def ClientNotFound(self, fingerprint, address):
2327
"D-Bus signal"
2328
pass
2329
2330
@dbus.service.signal(_interface, signature="os")
1607
dbus.service.Object.__init__(self, bus, u"/")
1608
_interface = u"se.bsnet.fukt.Mandos"
1609
1610
@dbus.service.signal(_interface, signature=u"oa{sv}")
1611
def ClientAdded(self, objpath, properties):
1612
"D-Bus signal"
1613
pass
1614
1615
@dbus.service.signal(_interface, signature=u"s")
1616
def ClientNotFound(self, fingerprint):
1617
"D-Bus signal"
1618
pass
1619
1620
@dbus.service.signal(_interface, signature=u"os")
2331
1621
def ClientRemoved(self, objpath, name):
2332
1622
"D-Bus signal"
2333
1623
pass
2334
1624
2335
@dbus.service.method(_interface, out_signature="ao")
1625
@dbus.service.method(_interface, out_signature=u"ao")
2336
1626
def GetAllClients(self):
2337
1627
"D-Bus method"
2338
1628
return dbus.Array(c.dbus_object_path
2339
for c in
2340
tcp_server.clients.itervalues())
1629
for c in tcp_server.clients)
2341
1630
2342
1631
@dbus.service.method(_interface,
2343
out_signature="a{oa{sv}}")
1632
out_signature=u"a{oa{sv}}")
2344
1633
def GetAllClientsWithProperties(self):
2345
1634
"D-Bus method"
2346
1635
return dbus.Dictionary(
2347
((c.dbus_object_path, c.GetAll(""))
2348
for c in tcp_server.clients.itervalues()),
2349
signature="oa{sv}")
1636
((c.dbus_object_path, c.GetAll(u""))
1637
for c in tcp_server.clients),
1638
signature=u"oa{sv}")
2350
1639
2351
@dbus.service.method(_interface, in_signature="o")
1640
@dbus.service.method(_interface, in_signature=u"o")
2352
1641
def RemoveClient(self, object_path):
2353
1642
"D-Bus method"
2354
for c in tcp_server.clients.itervalues():
1643
for c in tcp_server.clients:
2355
1644
if c.dbus_object_path == object_path:
2356
del tcp_server.clients[c.name]
1645
tcp_server.clients.remove(c)
2357
1646
c.remove_from_connection()
2358
1647
# Don't signal anything except ClientRemoved
2359
c.disable(quiet=True)
1648
c.disable(signal=False)
2360
1649
# Emit D-Bus signal
2361
1650
self.ClientRemoved(object_path, c.name)
2362
1651
return
2363
raise KeyError(object_path)
1652
raise KeyError
2364
1653
2365
1654
del _interface
2366
1655
2367
class MandosDBusServiceTransitional(MandosDBusService):
2368
__metaclass__ = AlternateDBusNamesMetaclass
2369
mandos_dbus_service = MandosDBusServiceTransitional()
2370
2371
def cleanup():
2372
"Cleanup function; run on exit"
2373
service.cleanup()
2374
2375
multiprocessing.active_children()
2376
if not (tcp_server.clients or client_settings):
2377
return
2378
2379
# Store client before exiting. Secrets are encrypted with key
2380
# based on what config file has. If config file is
2381
# removed/edited, old secret will thus be unrecovable.
2382
clients = {}
2383
with PGPEngine() as pgp:
2384
for client in tcp_server.clients.itervalues():
2385
key = client_settings[client.name]["secret"]
2386
client.encrypted_secret = pgp.encrypt(client.secret,
2387
key)
2388
client_dict = {}
2389
2390
# A list of attributes that can not be pickled
2391
# + secret.
2392
exclude = set(("bus", "changedstate", "secret",
2393
"checker"))
2394
for name, typ in (inspect.getmembers
2395
(dbus.service.Object)):
2396
exclude.add(name)
2397
2398
client_dict["encrypted_secret"] = (client
2399
.encrypted_secret)
2400
for attr in client.client_structure:
2401
if attr not in exclude:
2402
client_dict[attr] = getattr(client, attr)
2403
2404
clients[client.name] = client_dict
2405
del client_settings[client.name]["secret"]
2406
2407
try:
2408
with os.fdopen(os.open(stored_state_path,
2409
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2410
0600), "wb") as stored_state:
2411
pickle.dump((clients, client_settings), stored_state)
2412
except (IOError, OSError) as e:
2413
logger.warning("Could not save persistent state: {0}"
2414
.format(e))
2415
if e.errno not in (errno.ENOENT, errno.EACCES):
2416
raise
2417
2418
# Delete all clients, and settings from config
2419
while tcp_server.clients:
2420
name, client = tcp_server.clients.popitem()
2421
if use_dbus:
2422
client.remove_from_connection()
2423
# Don't signal anything except ClientRemoved
2424
client.disable(quiet=True)
2425
if use_dbus:
2426
# Emit D-Bus signal
2427
mandos_dbus_service.ClientRemoved(client
2428
.dbus_object_path,
2429
client.name)
2430
client_settings.clear()
2431
2432
atexit.register(cleanup)
2433
2434
for client in tcp_server.clients.itervalues():
1656
mandos_dbus_service = MandosDBusService()
1657
1658
for client in tcp_server.clients:
2435
1659
if use_dbus:
2436
1660
# Emit D-Bus signal
2437
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2438
# Need to initiate checking of clients
2439
if client.enabled:
2440
client.init_checker()
1661
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1662
client.GetAll(u""))
1663
client.enable()
2441
1664
2442
1665
tcp_server.enable()
2443
1666
tcp_server.server_activate()
2445
1668
# Find out what port we got
2446
1669
service.port = tcp_server.socket.getsockname()[1]
2447
1670
if use_ipv6:
2448
logger.info("Now listening on address %r, port %d,"
1671
logger.info(u"Now listening on address %r, port %d,"
2449
1672
" flowinfo %d, scope_id %d"
2450
1673
% tcp_server.socket.getsockname())
2451
1674
else: # IPv4
2452
logger.info("Now listening on address %r, port %d"
1675
logger.info(u"Now listening on address %r, port %d"
2453
1676
% tcp_server.socket.getsockname())
2454
1677
2455
1678
#service.interface = tcp_server.socket.getsockname()[3]
2458
1681
# From the Avahi example code
2459
1682
try:
2460
1683
service.activate()
2461
except dbus.exceptions.DBusException as error:
2462
logger.critical("DBusException: %s", error)
2463
cleanup()
1684
except dbus.exceptions.DBusException, error:
1685
logger.critical(u"DBusException: %s", error)
2464
1686
sys.exit(1)
2465
1687
# End of Avahi example code
2466
1688
2469
1691
(tcp_server.handle_request
2470
1692
(*args[2:], **kwargs) or True))
2471
1693
2472
logger.debug("Starting main loop")
1694
logger.debug(u"Starting main loop")
2473
1695
main_loop.run()
2474
except AvahiError as error:
2475
logger.critical("AvahiError: %s", error)
2476
cleanup()
1696
except AvahiError, error:
1697
logger.critical(u"AvahiError: %s", error)
2477
1698
sys.exit(1)
2478
1699
except KeyboardInterrupt:
2479
1700
if debug:
2480
print("", file=sys.stderr)
2481
logger.debug("Server received KeyboardInterrupt")
2482
logger.debug("Server exiting")
2483
# Must run before the D-Bus bus name gets deregistered
2484
cleanup()
1701
print >> sys.stderr
1702
logger.debug(u"Server received KeyboardInterrupt")
1703
logger.debug(u"Server exiting")
2485
1704
2486
1705
if __name__ == '__main__':
2487
1706
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0