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- Committer: Teddy Hogeborn
- Date: 2009-03-27 13:33:17 UTC
- mfrom: (288.1.2 mandos-pipe-ipc)
- Revision ID: teddy@fukt.bsnet.se-20090327133317-riwt5s5orrisozuj
Merge from pipe IPC branch.
* mandos (AvahiService.rename, main): Include PID in log messages when
using a different service name.
(Client.ReceivedSecret, Client.Rejected): New D-Bus signals.
(TCP_handler.handle): Send IPC to parent process.
(ForkingMixInWithPipe): New mixin class.
(IPv6_TCPServer): Inherit from ForkingMixInWithPipe instead of
SocketServer.ForkingMixIn.
(IPv6_TCPServer.handle_ipc): New method.
(main/mandos_server): Renamed to "mandos_dbus_service" and made
global.
(main/MandosServer): Renamed to "MandosDBusService".
(main/MandosDBusService.ClientNotFound): New D-Bus signal.
* mandos (AvahiService.rename, main): Include PID in log messages when
using a different service name.
(Client.ReceivedSecret, Client.Rejected): New D-Bus signals.
(TCP_handler.handle): Send IPC to parent process.
(ForkingMixInWithPipe): New mixin class.
(IPv6_TCPServer): Inherit from ForkingMixInWithPipe instead of
SocketServer.ForkingMixIn.
(IPv6_TCPServer.handle_ipc): New method.
(main/mandos_server): Renamed to "mandos_dbus_service" and made
global.
(main/MandosServer): Renamed to "MandosDBusService".
(main/MandosDBusService.ClientNotFound): New D-Bus signal.
- files removed:
- DBUS-API
- debian/source
- network-hooks.d
- files modified:
- .bzrignore
added
removed
mandos
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
# methods "add", "remove", "server_state_changed",
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
# "AvahiService" class, and some lines in "main".
9
# methods "add" and "remove" in the "AvahiService" class, the
10
# "server_state_changed" and "entry_group_state_changed" functions,
11
# and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
from future_builtins import *
38
39
import SocketServer as socketserver
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer
40
37
import socket
41
import argparse
38
import optparse
42
39
import datetime
43
40
import errno
44
41
import gnutls.crypto
47
44
import gnutls.library.functions
48
45
import gnutls.library.constants
49
46
import gnutls.library.types
50
import ConfigParser as configparser
47
import ConfigParser
51
48
import sys
52
49
import re
53
50
import os
54
51
import signal
52
from sets import Set
55
53
import subprocess
56
54
import atexit
57
55
import stat
58
56
import logging
59
57
import logging.handlers
60
58
import pwd
61
import contextlib
62
import struct
63
import fcntl
64
import functools
65
import cPickle as pickle
66
import multiprocessing
67
import types
68
import binascii
69
import tempfile
70
import itertools
59
from contextlib import closing
71
60
72
61
import dbus
73
62
import dbus.service
76
65
from dbus.mainloop.glib import DBusGMainLoop
77
66
import ctypes
78
67
import ctypes.util
79
import xml.dom.minidom
80
import inspect
81
import GnuPGInterface
82
83
try:
84
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
except AttributeError:
86
try:
87
from IN import SO_BINDTODEVICE
88
except ImportError:
89
SO_BINDTODEVICE = None
90
91
version = "1.5.3"
92
stored_state_file = "clients.pickle"
93
94
logger = logging.getLogger()
68
69
version = "1.0.8"
70
71
logger = logging.Logger('mandos')
95
72
syslogger = (logging.handlers.SysLogHandler
96
73
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
97
address = str("/dev/log")))
98
99
try:
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
103
except (OSError, AttributeError):
104
def if_nametoindex(interface):
105
"Get an interface index the hard way, i.e. using fcntl()"
106
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
107
with contextlib.closing(socket.socket()) as s:
108
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
113
return interface_index
114
115
116
def initlogger(debug, level=logging.WARNING):
117
"""init logger and add loglevel"""
118
119
syslogger.setFormatter(logging.Formatter
120
('Mandos [%(process)d]: %(levelname)s:'
121
' %(message)s'))
122
logger.addHandler(syslogger)
123
124
if debug:
125
console = logging.StreamHandler()
126
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
127
' [%(process)d]:'
128
' %(levelname)s:'
129
' %(message)s'))
130
logger.addHandler(console)
131
logger.setLevel(level)
132
133
134
class PGPError(Exception):
135
"""Exception if encryption/decryption fails"""
136
pass
137
138
139
class PGPEngine(object):
140
"""A simple class for OpenPGP symmetric encryption & decryption"""
141
def __init__(self):
142
self.gnupg = GnuPGInterface.GnuPG()
143
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
144
self.gnupg = GnuPGInterface.GnuPG()
145
self.gnupg.options.meta_interactive = False
146
self.gnupg.options.homedir = self.tempdir
147
self.gnupg.options.extra_args.extend(['--force-mdc',
148
'--quiet',
149
'--no-use-agent'])
150
151
def __enter__(self):
152
return self
153
154
def __exit__ (self, exc_type, exc_value, traceback):
155
self._cleanup()
156
return False
157
158
def __del__(self):
159
self._cleanup()
160
161
def _cleanup(self):
162
if self.tempdir is not None:
163
# Delete contents of tempdir
164
for root, dirs, files in os.walk(self.tempdir,
165
topdown = False):
166
for filename in files:
167
os.remove(os.path.join(root, filename))
168
for dirname in dirs:
169
os.rmdir(os.path.join(root, dirname))
170
# Remove tempdir
171
os.rmdir(self.tempdir)
172
self.tempdir = None
173
174
def password_encode(self, password):
175
# Passphrase can not be empty and can not contain newlines or
176
# NUL bytes. So we prefix it and hex encode it.
177
return b"mandos" + binascii.hexlify(password)
178
179
def encrypt(self, data, password):
180
self.gnupg.passphrase = self.password_encode(password)
181
with open(os.devnull, "w") as devnull:
182
try:
183
proc = self.gnupg.run(['--symmetric'],
184
create_fhs=['stdin', 'stdout'],
185
attach_fhs={'stderr': devnull})
186
with contextlib.closing(proc.handles['stdin']) as f:
187
f.write(data)
188
with contextlib.closing(proc.handles['stdout']) as f:
189
ciphertext = f.read()
190
proc.wait()
191
except IOError as e:
192
raise PGPError(e)
193
self.gnupg.passphrase = None
194
return ciphertext
195
196
def decrypt(self, data, password):
197
self.gnupg.passphrase = self.password_encode(password)
198
with open(os.devnull, "w") as devnull:
199
try:
200
proc = self.gnupg.run(['--decrypt'],
201
create_fhs=['stdin', 'stdout'],
202
attach_fhs={'stderr': devnull})
203
with contextlib.closing(proc.handles['stdin']) as f:
204
f.write(data)
205
with contextlib.closing(proc.handles['stdout']) as f:
206
decrypted_plaintext = f.read()
207
proc.wait()
208
except IOError as e:
209
raise PGPError(e)
210
self.gnupg.passphrase = None
211
return decrypted_plaintext
212
74
address = "/dev/log"))
75
syslogger.setFormatter(logging.Formatter
76
('Mandos [%(process)d]: %(levelname)s:'
77
' %(message)s'))
78
logger.addHandler(syslogger)
79
80
console = logging.StreamHandler()
81
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
82
' %(levelname)s: %(message)s'))
83
logger.addHandler(console)
213
84
214
85
class AvahiError(Exception):
215
86
def __init__(self, value, *args, **kwargs):
227
98
228
99
class AvahiService(object):
229
100
"""An Avahi (Zeroconf) service.
230
231
101
Attributes:
232
102
interface: integer; avahi.IF_UNSPEC or an interface index.
233
103
Used to optionally bind to the specified interface.
241
111
max_renames: integer; maximum number of renames
242
112
rename_count: integer; counter so we only rename after collisions
243
113
a sensible number of times
244
group: D-Bus Entry Group
245
server: D-Bus Server
246
bus: dbus.SystemBus()
247
114
"""
248
249
115
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
250
116
servicetype = None, port = None, TXT = None,
251
117
domain = "", host = "", max_renames = 32768,
252
protocol = avahi.PROTO_UNSPEC, bus = None):
118
protocol = avahi.PROTO_UNSPEC):
253
119
self.interface = interface
254
120
self.name = name
255
121
self.type = servicetype
260
126
self.rename_count = 0
261
127
self.max_renames = max_renames
262
128
self.protocol = protocol
263
self.group = None # our entry group
264
self.server = None
265
self.bus = bus
266
self.entry_group_state_changed_match = None
267
268
129
def rename(self):
269
130
"""Derived from the Avahi example code"""
270
131
if self.rename_count >= self.max_renames:
271
logger.critical("No suitable Zeroconf service name found"
272
" after %i retries, exiting.",
132
logger.critical(u"No suitable Zeroconf service name found"
133
u" after %i retries, exiting.",
273
134
self.rename_count)
274
raise AvahiServiceError("Too many renames")
275
self.name = unicode(self.server
276
.GetAlternativeServiceName(self.name))
277
logger.info("Changing Zeroconf service name to %r ...",
278
self.name)
135
raise AvahiServiceError(u"Too many renames")
136
self.name = server.GetAlternativeServiceName(self.name)
137
logger.info(u"Changing Zeroconf service name to %r ...",
138
str(self.name))
139
syslogger.setFormatter(logging.Formatter
140
('Mandos (%s) [%%(process)d]:'
141
' %%(levelname)s: %%(message)s'
142
% self.name))
279
143
self.remove()
280
try:
281
self.add()
282
except dbus.exceptions.DBusException as error:
283
logger.critical("D-Bus Exception", exc_info=error)
284
self.cleanup()
285
os._exit(1)
144
self.add()
286
145
self.rename_count += 1
287
288
146
def remove(self):
289
147
"""Derived from the Avahi example code"""
290
if self.entry_group_state_changed_match is not None:
291
self.entry_group_state_changed_match.remove()
292
self.entry_group_state_changed_match = None
293
if self.group is not None:
294
self.group.Reset()
295
148
if group is not None:
149
group.Reset()
296
150
def add(self):
297
151
"""Derived from the Avahi example code"""
298
self.remove()
299
if self.group is None:
300
self.group = dbus.Interface(
301
self.bus.get_object(avahi.DBUS_NAME,
302
self.server.EntryGroupNew()),
303
avahi.DBUS_INTERFACE_ENTRY_GROUP)
304
self.entry_group_state_changed_match = (
305
self.group.connect_to_signal(
306
'StateChanged', self.entry_group_state_changed))
307
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
308
self.name, self.type)
309
self.group.AddService(
310
self.interface,
311
self.protocol,
312
dbus.UInt32(0), # flags
313
self.name, self.type,
314
self.domain, self.host,
315
dbus.UInt16(self.port),
316
avahi.string_array_to_txt_array(self.TXT))
317
self.group.Commit()
318
319
def entry_group_state_changed(self, state, error):
320
"""Derived from the Avahi example code"""
321
logger.debug("Avahi entry group state change: %i", state)
322
323
if state == avahi.ENTRY_GROUP_ESTABLISHED:
324
logger.debug("Zeroconf service established.")
325
elif state == avahi.ENTRY_GROUP_COLLISION:
326
logger.info("Zeroconf service name collision.")
327
self.rename()
328
elif state == avahi.ENTRY_GROUP_FAILURE:
329
logger.critical("Avahi: Error in group state changed %s",
330
unicode(error))
331
raise AvahiGroupError("State changed: {0!s}"
332
.format(error))
333
334
def cleanup(self):
335
"""Derived from the Avahi example code"""
336
if self.group is not None:
337
try:
338
self.group.Free()
339
except (dbus.exceptions.UnknownMethodException,
340
dbus.exceptions.DBusException):
341
pass
342
self.group = None
343
self.remove()
344
345
def server_state_changed(self, state, error=None):
346
"""Derived from the Avahi example code"""
347
logger.debug("Avahi server state change: %i", state)
348
bad_states = { avahi.SERVER_INVALID:
349
"Zeroconf server invalid",
350
avahi.SERVER_REGISTERING: None,
351
avahi.SERVER_COLLISION:
352
"Zeroconf server name collision",
353
avahi.SERVER_FAILURE:
354
"Zeroconf server failure" }
355
if state in bad_states:
356
if bad_states[state] is not None:
357
if error is None:
358
logger.error(bad_states[state])
359
else:
360
logger.error(bad_states[state] + ": %r", error)
361
self.cleanup()
362
elif state == avahi.SERVER_RUNNING:
363
self.add()
364
else:
365
if error is None:
366
logger.debug("Unknown state: %r", state)
367
else:
368
logger.debug("Unknown state: %r: %r", state, error)
369
370
def activate(self):
371
"""Derived from the Avahi example code"""
372
if self.server is None:
373
self.server = dbus.Interface(
374
self.bus.get_object(avahi.DBUS_NAME,
375
avahi.DBUS_PATH_SERVER,
376
follow_name_owner_changes=True),
377
avahi.DBUS_INTERFACE_SERVER)
378
self.server.connect_to_signal("StateChanged",
379
self.server_state_changed)
380
self.server_state_changed(self.server.GetState())
381
382
383
class AvahiServiceToSyslog(AvahiService):
384
def rename(self):
385
"""Add the new name to the syslog messages"""
386
ret = AvahiService.rename(self)
387
syslogger.setFormatter(logging.Formatter
388
('Mandos ({0}) [%(process)d]:'
389
' %(levelname)s: %(message)s'
390
.format(self.name)))
391
return ret
392
393
394
def timedelta_to_milliseconds(td):
395
"Convert a datetime.timedelta() to milliseconds"
396
return ((td.days * 24 * 60 * 60 * 1000)
397
+ (td.seconds * 1000)
398
+ (td.microseconds // 1000))
399
400
401
class Client(object):
152
global group
153
if group is None:
154
group = dbus.Interface(bus.get_object
155
(avahi.DBUS_NAME,
156
server.EntryGroupNew()),
157
avahi.DBUS_INTERFACE_ENTRY_GROUP)
158
group.connect_to_signal('StateChanged',
159
entry_group_state_changed)
160
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
161
service.name, service.type)
162
group.AddService(
163
self.interface, # interface
164
self.protocol, # protocol
165
dbus.UInt32(0), # flags
166
self.name, self.type,
167
self.domain, self.host,
168
dbus.UInt16(self.port),
169
avahi.string_array_to_txt_array(self.TXT))
170
group.Commit()
171
172
# From the Avahi example code:
173
group = None # our entry group
174
# End of Avahi example code
175
176
177
def _datetime_to_dbus(dt, variant_level=0):
178
"""Convert a UTC datetime.datetime() to a D-Bus type."""
179
return dbus.String(dt.isoformat(), variant_level=variant_level)
180
181
182
class Client(dbus.service.Object):
402
183
"""A representation of a client host served by this server.
403
404
184
Attributes:
405
approved: bool(); 'None' if not yet approved/disapproved
406
approval_delay: datetime.timedelta(); Time to wait for approval
407
approval_duration: datetime.timedelta(); Duration of one approval
185
name: string; from the config file, used in log messages and
186
D-Bus identifiers
187
fingerprint: string (40 or 32 hexadecimal digits); used to
188
uniquely identify the client
189
secret: bytestring; sent verbatim (over TLS) to client
190
host: string; available for use by the checker command
191
created: datetime.datetime(); (UTC) object creation
192
last_enabled: datetime.datetime(); (UTC)
193
enabled: bool()
194
last_checked_ok: datetime.datetime(); (UTC) or None
195
timeout: datetime.timedelta(); How long from last_checked_ok
196
until this client is invalid
197
interval: datetime.timedelta(); How often to start a new checker
198
disable_hook: If set, called by disable() as disable_hook(self)
408
199
checker: subprocess.Popen(); a running checker process used
409
200
to see if the client lives.
410
201
'None' if no process is running.
411
checker_callback_tag: a gobject event source tag, or None
412
checker_command: string; External command which is run to check
413
if client lives. %() expansions are done at
202
checker_initiator_tag: a gobject event source tag, or None
203
disable_initiator_tag: - '' -
204
checker_callback_tag: - '' -
205
checker_command: string; External command which is run to check if
206
client lives. %() expansions are done at
414
207
runtime with vars(self) as dict, so that for
415
208
instance %(name)s can be used in the command.
416
checker_initiator_tag: a gobject event source tag, or None
417
created: datetime.datetime(); (UTC) object creation
418
client_structure: Object describing what attributes a client has
419
and is used for storing the client at exit
420
209
current_checker_command: string; current running checker_command
421
disable_initiator_tag: a gobject event source tag, or None
422
enabled: bool()
423
fingerprint: string (40 or 32 hexadecimal digits); used to
424
uniquely identify the client
425
host: string; available for use by the checker command
426
interval: datetime.timedelta(); How often to start a new checker
427
last_approval_request: datetime.datetime(); (UTC) or None
428
last_checked_ok: datetime.datetime(); (UTC) or None
429
last_checker_status: integer between 0 and 255 reflecting exit
430
status of last checker. -1 reflects crashed
431
checker, -2 means no checker completed yet.
432
last_enabled: datetime.datetime(); (UTC) or None
433
name: string; from the config file, used in log messages and
434
D-Bus identifiers
435
secret: bytestring; sent verbatim (over TLS) to client
436
timeout: datetime.timedelta(); How long from last_checked_ok
437
until this client is disabled
438
extended_timeout: extra long timeout when secret has been sent
439
runtime_expansions: Allowed attributes for runtime expansion.
440
expires: datetime.datetime(); time (UTC) when a client will be
441
disabled, or None
210
use_dbus: bool(); Whether to provide D-Bus interface and signals
211
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
442
212
"""
443
444
runtime_expansions = ("approval_delay", "approval_duration",
445
"created", "enabled", "fingerprint",
446
"host", "interval", "last_checked_ok",
447
"last_enabled", "name", "timeout")
448
client_defaults = { "timeout": "5m",
449
"extended_timeout": "15m",
450
"interval": "2m",
451
"checker": "fping -q -- %%(host)s",
452
"host": "",
453
"approval_delay": "0s",
454
"approval_duration": "1s",
455
"approved_by_default": "True",
456
"enabled": "True",
457
}
458
459
213
def timeout_milliseconds(self):
460
214
"Return the 'timeout' attribute in milliseconds"
461
return timedelta_to_milliseconds(self.timeout)
462
463
def extended_timeout_milliseconds(self):
464
"Return the 'extended_timeout' attribute in milliseconds"
465
return timedelta_to_milliseconds(self.extended_timeout)
215
return ((self.timeout.days * 24 * 60 * 60 * 1000)
216
+ (self.timeout.seconds * 1000)
217
+ (self.timeout.microseconds // 1000))
466
218
467
219
def interval_milliseconds(self):
468
220
"Return the 'interval' attribute in milliseconds"
469
return timedelta_to_milliseconds(self.interval)
470
471
def approval_delay_milliseconds(self):
472
return timedelta_to_milliseconds(self.approval_delay)
473
474
@staticmethod
475
def config_parser(config):
476
"""Construct a new dict of client settings of this form:
477
{ client_name: {setting_name: value, ...}, ...}
478
with exceptions for any special settings as defined above.
479
NOTE: Must be a pure function. Must return the same result
480
value given the same arguments.
481
"""
482
settings = {}
483
for client_name in config.sections():
484
section = dict(config.items(client_name))
485
client = settings[client_name] = {}
486
487
client["host"] = section["host"]
488
# Reformat values from string types to Python types
489
client["approved_by_default"] = config.getboolean(
490
client_name, "approved_by_default")
491
client["enabled"] = config.getboolean(client_name,
492
"enabled")
493
494
client["fingerprint"] = (section["fingerprint"].upper()
495
.replace(" ", ""))
496
if "secret" in section:
497
client["secret"] = section["secret"].decode("base64")
498
elif "secfile" in section:
499
with open(os.path.expanduser(os.path.expandvars
500
(section["secfile"])),
501
"rb") as secfile:
502
client["secret"] = secfile.read()
503
else:
504
raise TypeError("No secret or secfile for section {0}"
505
.format(section))
506
client["timeout"] = string_to_delta(section["timeout"])
507
client["extended_timeout"] = string_to_delta(
508
section["extended_timeout"])
509
client["interval"] = string_to_delta(section["interval"])
510
client["approval_delay"] = string_to_delta(
511
section["approval_delay"])
512
client["approval_duration"] = string_to_delta(
513
section["approval_duration"])
514
client["checker_command"] = section["checker"]
515
client["last_approval_request"] = None
516
client["last_checked_ok"] = None
517
client["last_checker_status"] = -2
518
519
return settings
520
521
def __init__(self, settings, name = None):
221
return ((self.interval.days * 24 * 60 * 60 * 1000)
222
+ (self.interval.seconds * 1000)
223
+ (self.interval.microseconds // 1000))
224
225
def __init__(self, name = None, disable_hook=None, config=None,
226
use_dbus=True):
227
"""Note: the 'checker' key in 'config' sets the
228
'checker_command' attribute and *not* the 'checker'
229
attribute."""
522
230
self.name = name
523
# adding all client settings
524
for setting, value in settings.iteritems():
525
setattr(self, setting, value)
526
527
if self.enabled:
528
if not hasattr(self, "last_enabled"):
529
self.last_enabled = datetime.datetime.utcnow()
530
if not hasattr(self, "expires"):
531
self.expires = (datetime.datetime.utcnow()
532
+ self.timeout)
533
else:
534
self.last_enabled = None
535
self.expires = None
536
537
logger.debug("Creating client %r", self.name)
231
if config is None:
232
config = {}
233
logger.debug(u"Creating client %r", self.name)
234
self.use_dbus = False # During __init__
538
235
# Uppercase and remove spaces from fingerprint for later
539
236
# comparison purposes with return value from the fingerprint()
540
237
# function
541
logger.debug(" Fingerprint: %s", self.fingerprint)
542
self.created = settings.get("created",
543
datetime.datetime.utcnow())
544
545
# attributes specific for this server instance
238
self.fingerprint = (config["fingerprint"].upper()
239
.replace(u" ", u""))
240
logger.debug(u" Fingerprint: %s", self.fingerprint)
241
if "secret" in config:
242
self.secret = config["secret"].decode(u"base64")
243
elif "secfile" in config:
244
with closing(open(os.path.expanduser
245
(os.path.expandvars
246
(config["secfile"])))) as secfile:
247
self.secret = secfile.read()
248
else:
249
raise TypeError(u"No secret or secfile for client %s"
250
% self.name)
251
self.host = config.get("host", "")
252
self.created = datetime.datetime.utcnow()
253
self.enabled = False
254
self.last_enabled = None
255
self.last_checked_ok = None
256
self.timeout = string_to_delta(config["timeout"])
257
self.interval = string_to_delta(config["interval"])
258
self.disable_hook = disable_hook
546
259
self.checker = None
547
260
self.checker_initiator_tag = None
548
261
self.disable_initiator_tag = None
549
262
self.checker_callback_tag = None
263
self.checker_command = config["checker"]
550
264
self.current_checker_command = None
551
self.approved = None
552
self.approvals_pending = 0
553
self.changedstate = (multiprocessing_manager
554
.Condition(multiprocessing_manager
555
.Lock()))
556
self.client_structure = [attr for attr in
557
self.__dict__.iterkeys()
558
if not attr.startswith("_")]
559
self.client_structure.append("client_structure")
560
561
for name, t in inspect.getmembers(type(self),
562
lambda obj:
563
isinstance(obj,
564
property)):
565
if not name.startswith("_"):
566
self.client_structure.append(name)
567
568
# Send notice to process children that client state has changed
569
def send_changedstate(self):
570
with self.changedstate:
571
self.changedstate.notify_all()
265
self.last_connect = None
266
# Only now, when this client is initialized, can it show up on
267
# the D-Bus
268
self.use_dbus = use_dbus
269
if self.use_dbus:
270
self.dbus_object_path = (dbus.ObjectPath
271
("/clients/"
272
+ self.name.replace(".", "_")))
273
dbus.service.Object.__init__(self, bus,
274
self.dbus_object_path)
572
275
573
276
def enable(self):
574
277
"""Start this client's checker and timeout hooks"""
575
if getattr(self, "enabled", False):
576
# Already enabled
577
return
578
self.expires = datetime.datetime.utcnow() + self.timeout
579
self.enabled = True
580
278
self.last_enabled = datetime.datetime.utcnow()
581
self.init_checker()
582
self.send_changedstate()
583
584
def disable(self, quiet=True):
585
"""Disable this client."""
586
if not getattr(self, "enabled", False):
587
return False
588
if not quiet:
589
logger.info("Disabling client %s", self.name)
590
if getattr(self, "disable_initiator_tag", None) is not None:
591
gobject.source_remove(self.disable_initiator_tag)
592
self.disable_initiator_tag = None
593
self.expires = None
594
if getattr(self, "checker_initiator_tag", None) is not None:
595
gobject.source_remove(self.checker_initiator_tag)
596
self.checker_initiator_tag = None
597
self.stop_checker()
598
self.enabled = False
599
if not quiet:
600
self.send_changedstate()
601
# Do not run this again if called by a gobject.timeout_add
602
return False
603
604
def __del__(self):
605
self.disable()
606
607
def init_checker(self):
608
279
# Schedule a new checker to be started an 'interval' from now,
609
280
# and every interval from then on.
610
if self.checker_initiator_tag is not None:
611
gobject.source_remove(self.checker_initiator_tag)
612
281
self.checker_initiator_tag = (gobject.timeout_add
613
282
(self.interval_milliseconds(),
614
283
self.start_checker))
284
# Also start a new checker *right now*.
285
self.start_checker()
615
286
# Schedule a disable() when 'timeout' has passed
616
if self.disable_initiator_tag is not None:
617
gobject.source_remove(self.disable_initiator_tag)
618
287
self.disable_initiator_tag = (gobject.timeout_add
619
288
(self.timeout_milliseconds(),
620
289
self.disable))
621
# Also start a new checker *right now*.
622
self.start_checker()
290
self.enabled = True
291
if self.use_dbus:
292
# Emit D-Bus signals
293
self.PropertyChanged(dbus.String(u"enabled"),
294
dbus.Boolean(True, variant_level=1))
295
self.PropertyChanged(dbus.String(u"last_enabled"),
296
(_datetime_to_dbus(self.last_enabled,
297
variant_level=1)))
298
299
def disable(self):
300
"""Disable this client."""
301
if not getattr(self, "enabled", False):
302
return False
303
logger.info(u"Disabling client %s", self.name)
304
if getattr(self, "disable_initiator_tag", False):
305
gobject.source_remove(self.disable_initiator_tag)
306
self.disable_initiator_tag = None
307
if getattr(self, "checker_initiator_tag", False):
308
gobject.source_remove(self.checker_initiator_tag)
309
self.checker_initiator_tag = None
310
self.stop_checker()
311
if self.disable_hook:
312
self.disable_hook(self)
313
self.enabled = False
314
if self.use_dbus:
315
# Emit D-Bus signal
316
self.PropertyChanged(dbus.String(u"enabled"),
317
dbus.Boolean(False, variant_level=1))
318
# Do not run this again if called by a gobject.timeout_add
319
return False
320
321
def __del__(self):
322
self.disable_hook = None
323
self.disable()
623
324
624
325
def checker_callback(self, pid, condition, command):
625
326
"""The checker has completed, so take appropriate actions."""
626
327
self.checker_callback_tag = None
627
328
self.checker = None
329
if self.use_dbus:
330
# Emit D-Bus signal
331
self.PropertyChanged(dbus.String(u"checker_running"),
332
dbus.Boolean(False, variant_level=1))
628
333
if os.WIFEXITED(condition):
629
self.last_checker_status = os.WEXITSTATUS(condition)
630
if self.last_checker_status == 0:
631
logger.info("Checker for %(name)s succeeded",
334
exitstatus = os.WEXITSTATUS(condition)
335
if exitstatus == 0:
336
logger.info(u"Checker for %(name)s succeeded",
632
337
vars(self))
633
338
self.checked_ok()
634
339
else:
635
logger.info("Checker for %(name)s failed",
340
logger.info(u"Checker for %(name)s failed",
636
341
vars(self))
342
if self.use_dbus:
343
# Emit D-Bus signal
344
self.CheckerCompleted(dbus.Int16(exitstatus),
345
dbus.Int64(condition),
346
dbus.String(command))
637
347
else:
638
self.last_checker_status = -1
639
logger.warning("Checker for %(name)s crashed?",
348
logger.warning(u"Checker for %(name)s crashed?",
640
349
vars(self))
350
if self.use_dbus:
351
# Emit D-Bus signal
352
self.CheckerCompleted(dbus.Int16(-1),
353
dbus.Int64(condition),
354
dbus.String(command))
641
355
642
356
def checked_ok(self):
643
"""Assert that the client has been seen, alive and well."""
357
"""Bump up the timeout for this client.
358
This should only be called when the client has been seen,
359
alive and well.
360
"""
644
361
self.last_checked_ok = datetime.datetime.utcnow()
645
self.last_checker_status = 0
646
self.bump_timeout()
647
648
def bump_timeout(self, timeout=None):
649
"""Bump up the timeout for this client."""
650
if timeout is None:
651
timeout = self.timeout
652
if self.disable_initiator_tag is not None:
653
gobject.source_remove(self.disable_initiator_tag)
654
self.disable_initiator_tag = None
655
if getattr(self, "enabled", False):
656
self.disable_initiator_tag = (gobject.timeout_add
657
(timedelta_to_milliseconds
658
(timeout), self.disable))
659
self.expires = datetime.datetime.utcnow() + timeout
660
661
def need_approval(self):
662
self.last_approval_request = datetime.datetime.utcnow()
362
gobject.source_remove(self.disable_initiator_tag)
363
self.disable_initiator_tag = (gobject.timeout_add
364
(self.timeout_milliseconds(),
365
self.disable))
366
if self.use_dbus:
367
# Emit D-Bus signal
368
self.PropertyChanged(
369
dbus.String(u"last_checked_ok"),
370
(_datetime_to_dbus(self.last_checked_ok,
371
variant_level=1)))
663
372
664
373
def start_checker(self):
665
374
"""Start a new checker subprocess if one is not running.
666
667
375
If a checker already exists, leave it running and do
668
376
nothing."""
669
377
# The reason for not killing a running checker is that if we
670
# did that, and if a checker (for some reason) started running
671
# slowly and taking more than 'interval' time, then the client
672
# would inevitably timeout, since no checker would get a
673
# chance to run to completion. If we instead leave running
378
# did that, then if a checker (for some reason) started
379
# running slowly and taking more than 'interval' time, the
380
# client would inevitably timeout, since no checker would get
381
# a chance to run to completion. If we instead leave running
674
382
# checkers alone, the checker would have to take more time
675
# than 'timeout' for the client to be disabled, which is as it
676
# should be.
383
# than 'timeout' for the client to be declared invalid, which
384
# is as it should be.
677
385
678
386
# If a checker exists, make sure it is not a zombie
679
try:
387
if self.checker is not None:
680
388
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
681
except (AttributeError, OSError) as error:
682
if (isinstance(error, OSError)
683
and error.errno != errno.ECHILD):
684
raise error
685
else:
686
389
if pid:
687
390
logger.warning("Checker was a zombie")
688
391
gobject.source_remove(self.checker_callback_tag)
690
393
self.current_checker_command)
691
394
# Start a new checker if needed
692
395
if self.checker is None:
693
# Escape attributes for the shell
694
escaped_attrs = dict(
695
(attr, re.escape(unicode(getattr(self, attr))))
696
for attr in
697
self.runtime_expansions)
698
try:
699
command = self.checker_command % escaped_attrs
700
except TypeError as error:
701
logger.error('Could not format string "%s"',
702
self.checker_command, exc_info=error)
703
return True # Try again later
704
self.current_checker_command = command
705
try:
706
logger.info("Starting checker %r for %s",
396
try:
397
# In case checker_command has exactly one % operator
398
command = self.checker_command % self.host
399
except TypeError:
400
# Escape attributes for the shell
401
escaped_attrs = dict((key, re.escape(str(val)))
402
for key, val in
403
vars(self).iteritems())
404
try:
405
command = self.checker_command % escaped_attrs
406
except TypeError, error:
407
logger.error(u'Could not format string "%s":'
408
u' %s', self.checker_command, error)
409
return True # Try again later
410
self.current_checker_command = command
411
try:
412
logger.info(u"Starting checker %r for %s",
707
413
command, self.name)
708
414
# We don't need to redirect stdout and stderr, since
709
415
# in normal mode, that is already done by daemon(),
712
418
self.checker = subprocess.Popen(command,
713
419
close_fds=True,
714
420
shell=True, cwd="/")
715
except OSError as error:
716
logger.error("Failed to start subprocess",
717
exc_info=error)
718
self.checker_callback_tag = (gobject.child_watch_add
719
(self.checker.pid,
720
self.checker_callback,
721
data=command))
722
# The checker may have completed before the gobject
723
# watch was added. Check for this.
724
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
725
if pid:
726
gobject.source_remove(self.checker_callback_tag)
727
self.checker_callback(pid, status, command)
421
if self.use_dbus:
422
# Emit D-Bus signal
423
self.CheckerStarted(command)
424
self.PropertyChanged(
425
dbus.String("checker_running"),
426
dbus.Boolean(True, variant_level=1))
427
self.checker_callback_tag = (gobject.child_watch_add
428
(self.checker.pid,
429
self.checker_callback,
430
data=command))
431
# The checker may have completed before the gobject
432
# watch was added. Check for this.
433
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
434
if pid:
435
gobject.source_remove(self.checker_callback_tag)
436
self.checker_callback(pid, status, command)
437
except OSError, error:
438
logger.error(u"Failed to start subprocess: %s",
439
error)
728
440
# Re-run this periodically if run by gobject.timeout_add
729
441
return True
730
442
735
447
self.checker_callback_tag = None
736
448
if getattr(self, "checker", None) is None:
737
449
return
738
logger.debug("Stopping checker for %(name)s", vars(self))
450
logger.debug(u"Stopping checker for %(name)s", vars(self))
739
451
try:
740
self.checker.terminate()
741
#time.sleep(0.5)
452
os.kill(self.checker.pid, signal.SIGTERM)
453
#os.sleep(0.5)
742
454
#if self.checker.poll() is None:
743
# self.checker.kill()
744
except OSError as error:
455
# os.kill(self.checker.pid, signal.SIGKILL)
456
except OSError, error:
745
457
if error.errno != errno.ESRCH: # No such process
746
458
raise
747
459
self.checker = None
748
749
750
def dbus_service_property(dbus_interface, signature="v",
751
access="readwrite", byte_arrays=False):
752
"""Decorators for marking methods of a DBusObjectWithProperties to
753
become properties on the D-Bus.
754
755
The decorated method will be called with no arguments by "Get"
756
and with one argument by "Set".
757
758
The parameters, where they are supported, are the same as
759
dbus.service.method, except there is only "signature", since the
760
type from Get() and the type sent to Set() is the same.
761
"""
762
# Encoding deeply encoded byte arrays is not supported yet by the
763
# "Set" method, so we fail early here:
764
if byte_arrays and signature != "ay":
765
raise ValueError("Byte arrays not supported for non-'ay'"
766
" signature {0!r}".format(signature))
767
def decorator(func):
768
func._dbus_is_property = True
769
func._dbus_interface = dbus_interface
770
func._dbus_signature = signature
771
func._dbus_access = access
772
func._dbus_name = func.__name__
773
if func._dbus_name.endswith("_dbus_property"):
774
func._dbus_name = func._dbus_name[:-14]
775
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
776
return func
777
return decorator
778
779
780
def dbus_interface_annotations(dbus_interface):
781
"""Decorator for marking functions returning interface annotations
782
783
Usage:
784
785
@dbus_interface_annotations("org.example.Interface")
786
def _foo(self): # Function name does not matter
787
return {"org.freedesktop.DBus.Deprecated": "true",
788
"org.freedesktop.DBus.Property.EmitsChangedSignal":
789
"false"}
790
"""
791
def decorator(func):
792
func._dbus_is_interface = True
793
func._dbus_interface = dbus_interface
794
func._dbus_name = dbus_interface
795
return func
796
return decorator
797
798
799
def dbus_annotations(annotations):
800
"""Decorator to annotate D-Bus methods, signals or properties
801
Usage:
802
803
@dbus_service_property("org.example.Interface", signature="b",
804
access="r")
805
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
806
"org.freedesktop.DBus.Property."
807
"EmitsChangedSignal": "false"})
808
def Property_dbus_property(self):
809
return dbus.Boolean(False)
810
"""
811
def decorator(func):
812
func._dbus_annotations = annotations
813
return func
814
return decorator
815
816
817
class DBusPropertyException(dbus.exceptions.DBusException):
818
"""A base class for D-Bus property-related exceptions
819
"""
820
def __unicode__(self):
821
return unicode(str(self))
822
823
824
class DBusPropertyAccessException(DBusPropertyException):
825
"""A property's access permissions disallows an operation.
826
"""
827
pass
828
829
830
class DBusPropertyNotFound(DBusPropertyException):
831
"""An attempt was made to access a non-existing property.
832
"""
833
pass
834
835
836
class DBusObjectWithProperties(dbus.service.Object):
837
"""A D-Bus object with properties.
838
839
Classes inheriting from this can use the dbus_service_property
840
decorator to expose methods as D-Bus properties. It exposes the
841
standard Get(), Set(), and GetAll() methods on the D-Bus.
842
"""
843
844
@staticmethod
845
def _is_dbus_thing(thing):
846
"""Returns a function testing if an attribute is a D-Bus thing
847
848
If called like _is_dbus_thing("method") it returns a function
849
suitable for use as predicate to inspect.getmembers().
850
"""
851
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
852
False)
853
854
def _get_all_dbus_things(self, thing):
855
"""Returns a generator of (name, attribute) pairs
856
"""
857
return ((getattr(athing.__get__(self), "_dbus_name",
858
name),
859
athing.__get__(self))
860
for cls in self.__class__.__mro__
861
for name, athing in
862
inspect.getmembers(cls,
863
self._is_dbus_thing(thing)))
864
865
def _get_dbus_property(self, interface_name, property_name):
866
"""Returns a bound method if one exists which is a D-Bus
867
property with the specified name and interface.
868
"""
869
for cls in self.__class__.__mro__:
870
for name, value in (inspect.getmembers
871
(cls,
872
self._is_dbus_thing("property"))):
873
if (value._dbus_name == property_name
874
and value._dbus_interface == interface_name):
875
return value.__get__(self)
876
877
# No such property
878
raise DBusPropertyNotFound(self.dbus_object_path + ":"
879
+ interface_name + "."
880
+ property_name)
881
882
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
883
out_signature="v")
884
def Get(self, interface_name, property_name):
885
"""Standard D-Bus property Get() method, see D-Bus standard.
886
"""
887
prop = self._get_dbus_property(interface_name, property_name)
888
if prop._dbus_access == "write":
889
raise DBusPropertyAccessException(property_name)
890
value = prop()
891
if not hasattr(value, "variant_level"):
892
return value
893
return type(value)(value, variant_level=value.variant_level+1)
894
895
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
896
def Set(self, interface_name, property_name, value):
897
"""Standard D-Bus property Set() method, see D-Bus standard.
898
"""
899
prop = self._get_dbus_property(interface_name, property_name)
900
if prop._dbus_access == "read":
901
raise DBusPropertyAccessException(property_name)
902
if prop._dbus_get_args_options["byte_arrays"]:
903
# The byte_arrays option is not supported yet on
904
# signatures other than "ay".
905
if prop._dbus_signature != "ay":
906
raise ValueError
907
value = dbus.ByteArray(b''.join(chr(byte)
908
for byte in value))
909
prop(value)
910
911
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
912
out_signature="a{sv}")
913
def GetAll(self, interface_name):
914
"""Standard D-Bus property GetAll() method, see D-Bus
915
standard.
916
917
Note: Will not include properties with access="write".
918
"""
919
properties = {}
920
for name, prop in self._get_all_dbus_things("property"):
921
if (interface_name
922
and interface_name != prop._dbus_interface):
923
# Interface non-empty but did not match
924
continue
925
# Ignore write-only properties
926
if prop._dbus_access == "write":
927
continue
928
value = prop()
929
if not hasattr(value, "variant_level"):
930
properties[name] = value
931
continue
932
properties[name] = type(value)(value, variant_level=
933
value.variant_level+1)
934
return dbus.Dictionary(properties, signature="sv")
935
936
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
937
out_signature="s",
938
path_keyword='object_path',
939
connection_keyword='connection')
940
def Introspect(self, object_path, connection):
941
"""Overloading of standard D-Bus method.
942
943
Inserts property tags and interface annotation tags.
944
"""
945
xmlstring = dbus.service.Object.Introspect(self, object_path,
946
connection)
947
try:
948
document = xml.dom.minidom.parseString(xmlstring)
949
def make_tag(document, name, prop):
950
e = document.createElement("property")
951
e.setAttribute("name", name)
952
e.setAttribute("type", prop._dbus_signature)
953
e.setAttribute("access", prop._dbus_access)
954
return e
955
for if_tag in document.getElementsByTagName("interface"):
956
# Add property tags
957
for tag in (make_tag(document, name, prop)
958
for name, prop
959
in self._get_all_dbus_things("property")
960
if prop._dbus_interface
961
== if_tag.getAttribute("name")):
962
if_tag.appendChild(tag)
963
# Add annotation tags
964
for typ in ("method", "signal", "property"):
965
for tag in if_tag.getElementsByTagName(typ):
966
annots = dict()
967
for name, prop in (self.
968
_get_all_dbus_things(typ)):
969
if (name == tag.getAttribute("name")
970
and prop._dbus_interface
971
== if_tag.getAttribute("name")):
972
annots.update(getattr
973
(prop,
974
"_dbus_annotations",
975
{}))
976
for name, value in annots.iteritems():
977
ann_tag = document.createElement(
978
"annotation")
979
ann_tag.setAttribute("name", name)
980
ann_tag.setAttribute("value", value)
981
tag.appendChild(ann_tag)
982
# Add interface annotation tags
983
for annotation, value in dict(
984
itertools.chain.from_iterable(
985
annotations().iteritems()
986
for name, annotations in
987
self._get_all_dbus_things("interface")
988
if name == if_tag.getAttribute("name")
989
)).iteritems():
990
ann_tag = document.createElement("annotation")
991
ann_tag.setAttribute("name", annotation)
992
ann_tag.setAttribute("value", value)
993
if_tag.appendChild(ann_tag)
994
# Add the names to the return values for the
995
# "org.freedesktop.DBus.Properties" methods
996
if (if_tag.getAttribute("name")
997
== "org.freedesktop.DBus.Properties"):
998
for cn in if_tag.getElementsByTagName("method"):
999
if cn.getAttribute("name") == "Get":
1000
for arg in cn.getElementsByTagName("arg"):
1001
if (arg.getAttribute("direction")
1002
== "out"):
1003
arg.setAttribute("name", "value")
1004
elif cn.getAttribute("name") == "GetAll":
1005
for arg in cn.getElementsByTagName("arg"):
1006
if (arg.getAttribute("direction")
1007
== "out"):
1008
arg.setAttribute("name", "props")
1009
xmlstring = document.toxml("utf-8")
1010
document.unlink()
1011
except (AttributeError, xml.dom.DOMException,
1012
xml.parsers.expat.ExpatError) as error:
1013
logger.error("Failed to override Introspection method",
1014
exc_info=error)
1015
return xmlstring
1016
1017
1018
def datetime_to_dbus (dt, variant_level=0):
1019
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1020
if dt is None:
1021
return dbus.String("", variant_level = variant_level)
1022
return dbus.String(dt.isoformat(),
1023
variant_level=variant_level)
1024
1025
1026
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1027
"""A class decorator; applied to a subclass of
1028
dbus.service.Object, it will add alternate D-Bus attributes with
1029
interface names according to the "alt_interface_names" mapping.
1030
Usage:
1031
1032
@alternate_dbus_names({"org.example.Interface":
1033
"net.example.AlternateInterface"})
1034
class SampleDBusObject(dbus.service.Object):
1035
@dbus.service.method("org.example.Interface")
1036
def SampleDBusMethod():
1037
pass
1038
1039
The above "SampleDBusMethod" on "SampleDBusObject" will be
1040
reachable via two interfaces: "org.example.Interface" and
1041
"net.example.AlternateInterface", the latter of which will have
1042
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1043
"true", unless "deprecate" is passed with a False value.
1044
1045
This works for methods and signals, and also for D-Bus properties
1046
(from DBusObjectWithProperties) and interfaces (from the
1047
dbus_interface_annotations decorator).
1048
"""
1049
def wrapper(cls):
1050
for orig_interface_name, alt_interface_name in (
1051
alt_interface_names.iteritems()):
1052
attr = {}
1053
interface_names = set()
1054
# Go though all attributes of the class
1055
for attrname, attribute in inspect.getmembers(cls):
1056
# Ignore non-D-Bus attributes, and D-Bus attributes
1057
# with the wrong interface name
1058
if (not hasattr(attribute, "_dbus_interface")
1059
or not attribute._dbus_interface
1060
.startswith(orig_interface_name)):
1061
continue
1062
# Create an alternate D-Bus interface name based on
1063
# the current name
1064
alt_interface = (attribute._dbus_interface
1065
.replace(orig_interface_name,
1066
alt_interface_name))
1067
interface_names.add(alt_interface)
1068
# Is this a D-Bus signal?
1069
if getattr(attribute, "_dbus_is_signal", False):
1070
# Extract the original non-method function by
1071
# black magic
1072
nonmethod_func = (dict(
1073
zip(attribute.func_code.co_freevars,
1074
attribute.__closure__))["func"]
1075
.cell_contents)
1076
# Create a new, but exactly alike, function
1077
# object, and decorate it to be a new D-Bus signal
1078
# with the alternate D-Bus interface name
1079
new_function = (dbus.service.signal
1080
(alt_interface,
1081
attribute._dbus_signature)
1082
(types.FunctionType(
1083
nonmethod_func.func_code,
1084
nonmethod_func.func_globals,
1085
nonmethod_func.func_name,
1086
nonmethod_func.func_defaults,
1087
nonmethod_func.func_closure)))
1088
# Copy annotations, if any
1089
try:
1090
new_function._dbus_annotations = (
1091
dict(attribute._dbus_annotations))
1092
except AttributeError:
1093
pass
1094
# Define a creator of a function to call both the
1095
# original and alternate functions, so both the
1096
# original and alternate signals gets sent when
1097
# the function is called
1098
def fixscope(func1, func2):
1099
"""This function is a scope container to pass
1100
func1 and func2 to the "call_both" function
1101
outside of its arguments"""
1102
def call_both(*args, **kwargs):
1103
"""This function will emit two D-Bus
1104
signals by calling func1 and func2"""
1105
func1(*args, **kwargs)
1106
func2(*args, **kwargs)
1107
return call_both
1108
# Create the "call_both" function and add it to
1109
# the class
1110
attr[attrname] = fixscope(attribute, new_function)
1111
# Is this a D-Bus method?
1112
elif getattr(attribute, "_dbus_is_method", False):
1113
# Create a new, but exactly alike, function
1114
# object. Decorate it to be a new D-Bus method
1115
# with the alternate D-Bus interface name. Add it
1116
# to the class.
1117
attr[attrname] = (dbus.service.method
1118
(alt_interface,
1119
attribute._dbus_in_signature,
1120
attribute._dbus_out_signature)
1121
(types.FunctionType
1122
(attribute.func_code,
1123
attribute.func_globals,
1124
attribute.func_name,
1125
attribute.func_defaults,
1126
attribute.func_closure)))
1127
# Copy annotations, if any
1128
try:
1129
attr[attrname]._dbus_annotations = (
1130
dict(attribute._dbus_annotations))
1131
except AttributeError:
1132
pass
1133
# Is this a D-Bus property?
1134
elif getattr(attribute, "_dbus_is_property", False):
1135
# Create a new, but exactly alike, function
1136
# object, and decorate it to be a new D-Bus
1137
# property with the alternate D-Bus interface
1138
# name. Add it to the class.
1139
attr[attrname] = (dbus_service_property
1140
(alt_interface,
1141
attribute._dbus_signature,
1142
attribute._dbus_access,
1143
attribute
1144
._dbus_get_args_options
1145
["byte_arrays"])
1146
(types.FunctionType
1147
(attribute.func_code,
1148
attribute.func_globals,
1149
attribute.func_name,
1150
attribute.func_defaults,
1151
attribute.func_closure)))
1152
# Copy annotations, if any
1153
try:
1154
attr[attrname]._dbus_annotations = (
1155
dict(attribute._dbus_annotations))
1156
except AttributeError:
1157
pass
1158
# Is this a D-Bus interface?
1159
elif getattr(attribute, "_dbus_is_interface", False):
1160
# Create a new, but exactly alike, function
1161
# object. Decorate it to be a new D-Bus interface
1162
# with the alternate D-Bus interface name. Add it
1163
# to the class.
1164
attr[attrname] = (dbus_interface_annotations
1165
(alt_interface)
1166
(types.FunctionType
1167
(attribute.func_code,
1168
attribute.func_globals,
1169
attribute.func_name,
1170
attribute.func_defaults,
1171
attribute.func_closure)))
1172
if deprecate:
1173
# Deprecate all alternate interfaces
1174
iname="_AlternateDBusNames_interface_annotation{0}"
1175
for interface_name in interface_names:
1176
@dbus_interface_annotations(interface_name)
1177
def func(self):
1178
return { "org.freedesktop.DBus.Deprecated":
1179
"true" }
1180
# Find an unused name
1181
for aname in (iname.format(i)
1182
for i in itertools.count()):
1183
if aname not in attr:
1184
attr[aname] = func
1185
break
1186
if interface_names:
1187
# Replace the class with a new subclass of it with
1188
# methods, signals, etc. as created above.
1189
cls = type(b"{0}Alternate".format(cls.__name__),
1190
(cls,), attr)
1191
return cls
1192
return wrapper
1193
1194
1195
@alternate_dbus_interfaces({"se.recompile.Mandos":
1196
"se.bsnet.fukt.Mandos"})
1197
class ClientDBus(Client, DBusObjectWithProperties):
1198
"""A Client class using D-Bus
1199
1200
Attributes:
1201
dbus_object_path: dbus.ObjectPath
1202
bus: dbus.SystemBus()
1203
"""
1204
1205
runtime_expansions = (Client.runtime_expansions
1206
+ ("dbus_object_path",))
1207
1208
# dbus.service.Object doesn't use super(), so we can't either.
1209
1210
def __init__(self, bus = None, *args, **kwargs):
1211
self.bus = bus
1212
Client.__init__(self, *args, **kwargs)
1213
# Only now, when this client is initialized, can it show up on
1214
# the D-Bus
1215
client_object_name = unicode(self.name).translate(
1216
{ord("."): ord("_"),
1217
ord("-"): ord("_")})
1218
self.dbus_object_path = (dbus.ObjectPath
1219
("/clients/" + client_object_name))
1220
DBusObjectWithProperties.__init__(self, self.bus,
1221
self.dbus_object_path)
1222
1223
def notifychangeproperty(transform_func,
1224
dbus_name, type_func=lambda x: x,
1225
variant_level=1):
1226
""" Modify a variable so that it's a property which announces
1227
its changes to DBus.
1228
1229
transform_fun: Function that takes a value and a variant_level
1230
and transforms it to a D-Bus type.
1231
dbus_name: D-Bus name of the variable
1232
type_func: Function that transform the value before sending it
1233
to the D-Bus. Default: no transform
1234
variant_level: D-Bus variant level. Default: 1
1235
"""
1236
attrname = "_{0}".format(dbus_name)
1237
def setter(self, value):
1238
if hasattr(self, "dbus_object_path"):
1239
if (not hasattr(self, attrname) or
1240
type_func(getattr(self, attrname, None))
1241
!= type_func(value)):
1242
dbus_value = transform_func(type_func(value),
1243
variant_level
1244
=variant_level)
1245
self.PropertyChanged(dbus.String(dbus_name),
1246
dbus_value)
1247
setattr(self, attrname, value)
1248
1249
return property(lambda self: getattr(self, attrname), setter)
1250
1251
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1252
approvals_pending = notifychangeproperty(dbus.Boolean,
1253
"ApprovalPending",
1254
type_func = bool)
1255
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1256
last_enabled = notifychangeproperty(datetime_to_dbus,
1257
"LastEnabled")
1258
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1259
type_func = lambda checker:
1260
checker is not None)
1261
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1262
"LastCheckedOK")
1263
last_checker_status = notifychangeproperty(dbus.Int16,
1264
"LastCheckerStatus")
1265
last_approval_request = notifychangeproperty(
1266
datetime_to_dbus, "LastApprovalRequest")
1267
approved_by_default = notifychangeproperty(dbus.Boolean,
1268
"ApprovedByDefault")
1269
approval_delay = notifychangeproperty(dbus.UInt64,
1270
"ApprovalDelay",
1271
type_func =
1272
timedelta_to_milliseconds)
1273
approval_duration = notifychangeproperty(
1274
dbus.UInt64, "ApprovalDuration",
1275
type_func = timedelta_to_milliseconds)
1276
host = notifychangeproperty(dbus.String, "Host")
1277
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1278
type_func =
1279
timedelta_to_milliseconds)
1280
extended_timeout = notifychangeproperty(
1281
dbus.UInt64, "ExtendedTimeout",
1282
type_func = timedelta_to_milliseconds)
1283
interval = notifychangeproperty(dbus.UInt64,
1284
"Interval",
1285
type_func =
1286
timedelta_to_milliseconds)
1287
checker_command = notifychangeproperty(dbus.String, "Checker")
1288
1289
del notifychangeproperty
1290
1291
def __del__(self, *args, **kwargs):
1292
try:
1293
self.remove_from_connection()
1294
except LookupError:
1295
pass
1296
if hasattr(DBusObjectWithProperties, "__del__"):
1297
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1298
Client.__del__(self, *args, **kwargs)
1299
1300
def checker_callback(self, pid, condition, command,
1301
*args, **kwargs):
1302
self.checker_callback_tag = None
1303
self.checker = None
1304
if os.WIFEXITED(condition):
1305
exitstatus = os.WEXITSTATUS(condition)
1306
# Emit D-Bus signal
1307
self.CheckerCompleted(dbus.Int16(exitstatus),
1308
dbus.Int64(condition),
1309
dbus.String(command))
1310
else:
1311
# Emit D-Bus signal
1312
self.CheckerCompleted(dbus.Int16(-1),
1313
dbus.Int64(condition),
1314
dbus.String(command))
1315
1316
return Client.checker_callback(self, pid, condition, command,
1317
*args, **kwargs)
1318
1319
def start_checker(self, *args, **kwargs):
1320
old_checker = self.checker
1321
if self.checker is not None:
1322
old_checker_pid = self.checker.pid
1323
else:
1324
old_checker_pid = None
1325
r = Client.start_checker(self, *args, **kwargs)
1326
# Only if new checker process was started
1327
if (self.checker is not None
1328
and old_checker_pid != self.checker.pid):
1329
# Emit D-Bus signal
1330
self.CheckerStarted(self.current_checker_command)
1331
return r
1332
1333
def _reset_approved(self):
1334
self.approved = None
1335
return False
1336
1337
def approve(self, value=True):
1338
self.approved = value
1339
gobject.timeout_add(timedelta_to_milliseconds
1340
(self.approval_duration),
1341
self._reset_approved)
1342
self.send_changedstate()
1343
1344
## D-Bus methods, signals & properties
1345
_interface = "se.recompile.Mandos.Client"
1346
1347
## Interfaces
1348
1349
@dbus_interface_annotations(_interface)
1350
def _foo(self):
1351
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1352
"false"}
1353
1354
## Signals
460
if self.use_dbus:
461
self.PropertyChanged(dbus.String(u"checker_running"),
462
dbus.Boolean(False, variant_level=1))
463
464
def still_valid(self):
465
"""Has the timeout not yet passed for this client?"""
466
if not getattr(self, "enabled", False):
467
return False
468
now = datetime.datetime.utcnow()
469
if self.last_checked_ok is None:
470
return now < (self.created + self.timeout)
471
else:
472
return now < (self.last_checked_ok + self.timeout)
473
474
## D-Bus methods & signals
475
_interface = u"se.bsnet.fukt.Mandos.Client"
476
477
# CheckedOK - method
478
CheckedOK = dbus.service.method(_interface)(checked_ok)
479
CheckedOK.__name__ = "CheckedOK"
1355
480
1356
481
# CheckerCompleted - signal
1357
482
@dbus.service.signal(_interface, signature="nxs")
1365
490
"D-Bus signal"
1366
491
pass
1367
492
493
# GetAllProperties - method
494
@dbus.service.method(_interface, out_signature="a{sv}")
495
def GetAllProperties(self):
496
"D-Bus method"
497
return dbus.Dictionary({
498
dbus.String("name"):
499
dbus.String(self.name, variant_level=1),
500
dbus.String("fingerprint"):
501
dbus.String(self.fingerprint, variant_level=1),
502
dbus.String("host"):
503
dbus.String(self.host, variant_level=1),
504
dbus.String("created"):
505
_datetime_to_dbus(self.created, variant_level=1),
506
dbus.String("last_enabled"):
507
(_datetime_to_dbus(self.last_enabled,
508
variant_level=1)
509
if self.last_enabled is not None
510
else dbus.Boolean(False, variant_level=1)),
511
dbus.String("enabled"):
512
dbus.Boolean(self.enabled, variant_level=1),
513
dbus.String("last_checked_ok"):
514
(_datetime_to_dbus(self.last_checked_ok,
515
variant_level=1)
516
if self.last_checked_ok is not None
517
else dbus.Boolean (False, variant_level=1)),
518
dbus.String("timeout"):
519
dbus.UInt64(self.timeout_milliseconds(),
520
variant_level=1),
521
dbus.String("interval"):
522
dbus.UInt64(self.interval_milliseconds(),
523
variant_level=1),
524
dbus.String("checker"):
525
dbus.String(self.checker_command,
526
variant_level=1),
527
dbus.String("checker_running"):
528
dbus.Boolean(self.checker is not None,
529
variant_level=1),
530
dbus.String("object_path"):
531
dbus.ObjectPath(self.dbus_object_path,
532
variant_level=1)
533
}, signature="sv")
534
535
# IsStillValid - method
536
IsStillValid = (dbus.service.method(_interface, out_signature="b")
537
(still_valid))
538
IsStillValid.__name__ = "IsStillValid"
539
1368
540
# PropertyChanged - signal
1369
541
@dbus.service.signal(_interface, signature="sv")
1370
542
def PropertyChanged(self, property, value):
1371
543
"D-Bus signal"
1372
544
pass
1373
545
1374
# GotSecret - signal
546
# ReceivedSecret - signal
1375
547
@dbus.service.signal(_interface)
1376
def GotSecret(self):
1377
"""D-Bus signal
1378
Is sent after a successful transfer of secret from the Mandos
1379
server to mandos-client
1380
"""
548
def ReceivedSecret(self):
549
"D-Bus signal"
1381
550
pass
1382
551
1383
552
# Rejected - signal
1384
@dbus.service.signal(_interface, signature="s")
1385
def Rejected(self, reason):
553
@dbus.service.signal(_interface)
554
def Rejected(self):
1386
555
"D-Bus signal"
1387
556
pass
1388
557
1389
# NeedApproval - signal
1390
@dbus.service.signal(_interface, signature="tb")
1391
def NeedApproval(self, timeout, default):
1392
"D-Bus signal"
1393
return self.need_approval()
1394
1395
## Methods
1396
1397
# Approve - method
1398
@dbus.service.method(_interface, in_signature="b")
1399
def Approve(self, value):
1400
self.approve(value)
1401
1402
# CheckedOK - method
1403
@dbus.service.method(_interface)
1404
def CheckedOK(self):
1405
self.checked_ok()
558
# SetChecker - method
559
@dbus.service.method(_interface, in_signature="s")
560
def SetChecker(self, checker):
561
"D-Bus setter method"
562
self.checker_command = checker
563
# Emit D-Bus signal
564
self.PropertyChanged(dbus.String(u"checker"),
565
dbus.String(self.checker_command,
566
variant_level=1))
567
568
# SetHost - method
569
@dbus.service.method(_interface, in_signature="s")
570
def SetHost(self, host):
571
"D-Bus setter method"
572
self.host = host
573
# Emit D-Bus signal
574
self.PropertyChanged(dbus.String(u"host"),
575
dbus.String(self.host, variant_level=1))
576
577
# SetInterval - method
578
@dbus.service.method(_interface, in_signature="t")
579
def SetInterval(self, milliseconds):
580
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
581
# Emit D-Bus signal
582
self.PropertyChanged(dbus.String(u"interval"),
583
(dbus.UInt64(self.interval_milliseconds(),
584
variant_level=1)))
585
586
# SetSecret - method
587
@dbus.service.method(_interface, in_signature="ay",
588
byte_arrays=True)
589
def SetSecret(self, secret):
590
"D-Bus setter method"
591
self.secret = str(secret)
592
593
# SetTimeout - method
594
@dbus.service.method(_interface, in_signature="t")
595
def SetTimeout(self, milliseconds):
596
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
597
# Emit D-Bus signal
598
self.PropertyChanged(dbus.String(u"timeout"),
599
(dbus.UInt64(self.timeout_milliseconds(),
600
variant_level=1)))
1406
601
1407
602
# Enable - method
1408
@dbus.service.method(_interface)
1409
def Enable(self):
1410
"D-Bus method"
1411
self.enable()
603
Enable = dbus.service.method(_interface)(enable)
604
Enable.__name__ = "Enable"
1412
605
1413
606
# StartChecker - method
1414
607
@dbus.service.method(_interface)
1423
616
self.disable()
1424
617
1425
618
# StopChecker - method
1426
@dbus.service.method(_interface)
1427
def StopChecker(self):
1428
self.stop_checker()
1429
1430
## Properties
1431
1432
# ApprovalPending - property
1433
@dbus_service_property(_interface, signature="b", access="read")
1434
def ApprovalPending_dbus_property(self):
1435
return dbus.Boolean(bool(self.approvals_pending))
1436
1437
# ApprovedByDefault - property
1438
@dbus_service_property(_interface, signature="b",
1439
access="readwrite")
1440
def ApprovedByDefault_dbus_property(self, value=None):
1441
if value is None: # get
1442
return dbus.Boolean(self.approved_by_default)
1443
self.approved_by_default = bool(value)
1444
1445
# ApprovalDelay - property
1446
@dbus_service_property(_interface, signature="t",
1447
access="readwrite")
1448
def ApprovalDelay_dbus_property(self, value=None):
1449
if value is None: # get
1450
return dbus.UInt64(self.approval_delay_milliseconds())
1451
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1452
1453
# ApprovalDuration - property
1454
@dbus_service_property(_interface, signature="t",
1455
access="readwrite")
1456
def ApprovalDuration_dbus_property(self, value=None):
1457
if value is None: # get
1458
return dbus.UInt64(timedelta_to_milliseconds(
1459
self.approval_duration))
1460
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1461
1462
# Name - property
1463
@dbus_service_property(_interface, signature="s", access="read")
1464
def Name_dbus_property(self):
1465
return dbus.String(self.name)
1466
1467
# Fingerprint - property
1468
@dbus_service_property(_interface, signature="s", access="read")
1469
def Fingerprint_dbus_property(self):
1470
return dbus.String(self.fingerprint)
1471
1472
# Host - property
1473
@dbus_service_property(_interface, signature="s",
1474
access="readwrite")
1475
def Host_dbus_property(self, value=None):
1476
if value is None: # get
1477
return dbus.String(self.host)
1478
self.host = unicode(value)
1479
1480
# Created - property
1481
@dbus_service_property(_interface, signature="s", access="read")
1482
def Created_dbus_property(self):
1483
return datetime_to_dbus(self.created)
1484
1485
# LastEnabled - property
1486
@dbus_service_property(_interface, signature="s", access="read")
1487
def LastEnabled_dbus_property(self):
1488
return datetime_to_dbus(self.last_enabled)
1489
1490
# Enabled - property
1491
@dbus_service_property(_interface, signature="b",
1492
access="readwrite")
1493
def Enabled_dbus_property(self, value=None):
1494
if value is None: # get
1495
return dbus.Boolean(self.enabled)
1496
if value:
1497
self.enable()
1498
else:
1499
self.disable()
1500
1501
# LastCheckedOK - property
1502
@dbus_service_property(_interface, signature="s",
1503
access="readwrite")
1504
def LastCheckedOK_dbus_property(self, value=None):
1505
if value is not None:
1506
self.checked_ok()
1507
return
1508
return datetime_to_dbus(self.last_checked_ok)
1509
1510
# LastCheckerStatus - property
1511
@dbus_service_property(_interface, signature="n",
1512
access="read")
1513
def LastCheckerStatus_dbus_property(self):
1514
return dbus.Int16(self.last_checker_status)
1515
1516
# Expires - property
1517
@dbus_service_property(_interface, signature="s", access="read")
1518
def Expires_dbus_property(self):
1519
return datetime_to_dbus(self.expires)
1520
1521
# LastApprovalRequest - property
1522
@dbus_service_property(_interface, signature="s", access="read")
1523
def LastApprovalRequest_dbus_property(self):
1524
return datetime_to_dbus(self.last_approval_request)
1525
1526
# Timeout - property
1527
@dbus_service_property(_interface, signature="t",
1528
access="readwrite")
1529
def Timeout_dbus_property(self, value=None):
1530
if value is None: # get
1531
return dbus.UInt64(self.timeout_milliseconds())
1532
old_timeout = self.timeout
1533
self.timeout = datetime.timedelta(0, 0, 0, value)
1534
# Reschedule disabling
1535
if self.enabled:
1536
now = datetime.datetime.utcnow()
1537
self.expires += self.timeout - old_timeout
1538
if self.expires <= now:
1539
# The timeout has passed
1540
self.disable()
1541
else:
1542
if (getattr(self, "disable_initiator_tag", None)
1543
is None):
1544
return
1545
gobject.source_remove(self.disable_initiator_tag)
1546
self.disable_initiator_tag = (
1547
gobject.timeout_add(
1548
timedelta_to_milliseconds(self.expires - now),
1549
self.disable))
1550
1551
# ExtendedTimeout - property
1552
@dbus_service_property(_interface, signature="t",
1553
access="readwrite")
1554
def ExtendedTimeout_dbus_property(self, value=None):
1555
if value is None: # get
1556
return dbus.UInt64(self.extended_timeout_milliseconds())
1557
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1558
1559
# Interval - property
1560
@dbus_service_property(_interface, signature="t",
1561
access="readwrite")
1562
def Interval_dbus_property(self, value=None):
1563
if value is None: # get
1564
return dbus.UInt64(self.interval_milliseconds())
1565
self.interval = datetime.timedelta(0, 0, 0, value)
1566
if getattr(self, "checker_initiator_tag", None) is None:
1567
return
1568
if self.enabled:
1569
# Reschedule checker run
1570
gobject.source_remove(self.checker_initiator_tag)
1571
self.checker_initiator_tag = (gobject.timeout_add
1572
(value, self.start_checker))
1573
self.start_checker() # Start one now, too
1574
1575
# Checker - property
1576
@dbus_service_property(_interface, signature="s",
1577
access="readwrite")
1578
def Checker_dbus_property(self, value=None):
1579
if value is None: # get
1580
return dbus.String(self.checker_command)
1581
self.checker_command = unicode(value)
1582
1583
# CheckerRunning - property
1584
@dbus_service_property(_interface, signature="b",
1585
access="readwrite")
1586
def CheckerRunning_dbus_property(self, value=None):
1587
if value is None: # get
1588
return dbus.Boolean(self.checker is not None)
1589
if value:
1590
self.start_checker()
1591
else:
1592
self.stop_checker()
1593
1594
# ObjectPath - property
1595
@dbus_service_property(_interface, signature="o", access="read")
1596
def ObjectPath_dbus_property(self):
1597
return self.dbus_object_path # is already a dbus.ObjectPath
1598
1599
# Secret = property
1600
@dbus_service_property(_interface, signature="ay",
1601
access="write", byte_arrays=True)
1602
def Secret_dbus_property(self, value):
1603
self.secret = str(value)
619
StopChecker = dbus.service.method(_interface)(stop_checker)
620
StopChecker.__name__ = "StopChecker"
1604
621
1605
622
del _interface
1606
623
1607
624
1608
class ProxyClient(object):
1609
def __init__(self, child_pipe, fpr, address):
1610
self._pipe = child_pipe
1611
self._pipe.send(('init', fpr, address))
1612
if not self._pipe.recv():
1613
raise KeyError()
1614
1615
def __getattribute__(self, name):
1616
if name == '_pipe':
1617
return super(ProxyClient, self).__getattribute__(name)
1618
self._pipe.send(('getattr', name))
1619
data = self._pipe.recv()
1620
if data[0] == 'data':
1621
return data[1]
1622
if data[0] == 'function':
1623
def func(*args, **kwargs):
1624
self._pipe.send(('funcall', name, args, kwargs))
1625
return self._pipe.recv()[1]
1626
return func
1627
1628
def __setattr__(self, name, value):
1629
if name == '_pipe':
1630
return super(ProxyClient, self).__setattr__(name, value)
1631
self._pipe.send(('setattr', name, value))
1632
1633
1634
class ClientHandler(socketserver.BaseRequestHandler, object):
1635
"""A class to handle client connections.
1636
1637
Instantiated once for each connection to handle it.
625
def peer_certificate(session):
626
"Return the peer's OpenPGP certificate as a bytestring"
627
# If not an OpenPGP certificate...
628
if (gnutls.library.functions
629
.gnutls_certificate_type_get(session._c_object)
630
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
631
# ...do the normal thing
632
return session.peer_certificate
633
list_size = ctypes.c_uint(1)
634
cert_list = (gnutls.library.functions
635
.gnutls_certificate_get_peers
636
(session._c_object, ctypes.byref(list_size)))
637
if not bool(cert_list) and list_size.value != 0:
638
raise gnutls.errors.GNUTLSError("error getting peer"
639
" certificate")
640
if list_size.value == 0:
641
return None
642
cert = cert_list[0]
643
return ctypes.string_at(cert.data, cert.size)
644
645
646
def fingerprint(openpgp):
647
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
648
# New GnuTLS "datum" with the OpenPGP public key
649
datum = (gnutls.library.types
650
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
651
ctypes.POINTER
652
(ctypes.c_ubyte)),
653
ctypes.c_uint(len(openpgp))))
654
# New empty GnuTLS certificate
655
crt = gnutls.library.types.gnutls_openpgp_crt_t()
656
(gnutls.library.functions
657
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
658
# Import the OpenPGP public key into the certificate
659
(gnutls.library.functions
660
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
661
gnutls.library.constants
662
.GNUTLS_OPENPGP_FMT_RAW))
663
# Verify the self signature in the key
664
crtverify = ctypes.c_uint()
665
(gnutls.library.functions
666
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
667
if crtverify.value != 0:
668
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
669
raise gnutls.errors.CertificateSecurityError("Verify failed")
670
# New buffer for the fingerprint
671
buf = ctypes.create_string_buffer(20)
672
buf_len = ctypes.c_size_t()
673
# Get the fingerprint from the certificate into the buffer
674
(gnutls.library.functions
675
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
676
ctypes.byref(buf_len)))
677
# Deinit the certificate
678
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
679
# Convert the buffer to a Python bytestring
680
fpr = ctypes.string_at(buf, buf_len.value)
681
# Convert the bytestring to hexadecimal notation
682
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
683
return hex_fpr
684
685
686
class TCP_handler(SocketServer.BaseRequestHandler, object):
687
"""A TCP request handler class.
688
Instantiated by IPv6_TCPServer for each request to handle it.
1638
689
Note: This will run in its own forked process."""
1639
690
1640
691
def handle(self):
1641
with contextlib.closing(self.server.child_pipe) as child_pipe:
1642
logger.info("TCP connection from: %s",
1643
unicode(self.client_address))
1644
logger.debug("Pipe FD: %d",
1645
self.server.child_pipe.fileno())
1646
692
logger.info(u"TCP connection from: %s",
693
unicode(self.client_address))
694
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
695
# Open IPC pipe to parent process
696
with closing(os.fdopen(self.server.pipe[1], "w", 1)) as ipc:
1647
697
session = (gnutls.connection
1648
698
.ClientSession(self.request,
1649
699
gnutls.connection
1650
700
.X509Credentials()))
1651
701
702
line = self.request.makefile().readline()
703
logger.debug(u"Protocol version: %r", line)
704
try:
705
if int(line.strip().split()[0]) > 1:
706
raise RuntimeError
707
except (ValueError, IndexError, RuntimeError), error:
708
logger.error(u"Unknown protocol version: %s", error)
709
return
710
1652
711
# Note: gnutls.connection.X509Credentials is really a
1653
712
# generic GnuTLS certificate credentials object so long as
1654
713
# no X.509 keys are added to it. Therefore, we can use it
1655
714
# here despite using OpenPGP certificates.
1656
715
1657
716
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1658
# "+AES-256-CBC", "+SHA1",
1659
# "+COMP-NULL", "+CTYPE-OPENPGP",
1660
# "+DHE-DSS"))
717
# "+AES-256-CBC", "+SHA1",
718
# "+COMP-NULL", "+CTYPE-OPENPGP",
719
# "+DHE-DSS"))
1661
720
# Use a fallback default, since this MUST be set.
1662
priority = self.server.gnutls_priority
1663
if priority is None:
1664
priority = "NORMAL"
721
priority = self.server.settings.get("priority", "NORMAL")
1665
722
(gnutls.library.functions
1666
723
.gnutls_priority_set_direct(session._c_object,
1667
724
priority, None))
1668
725
1669
# Start communication using the Mandos protocol
1670
# Get protocol number
1671
line = self.request.makefile().readline()
1672
logger.debug("Protocol version: %r", line)
1673
try:
1674
if int(line.strip().split()[0]) > 1:
1675
raise RuntimeError
1676
except (ValueError, IndexError, RuntimeError) as error:
1677
logger.error("Unknown protocol version: %s", error)
1678
return
1679
1680
# Start GnuTLS connection
1681
726
try:
1682
727
session.handshake()
1683
except gnutls.errors.GNUTLSError as error:
1684
logger.warning("Handshake failed: %s", error)
728
except gnutls.errors.GNUTLSError, error:
729
logger.warning(u"Handshake failed: %s", error)
1685
730
# Do not run session.bye() here: the session is not
1686
731
# established. Just abandon the request.
1687
732
return
1688
logger.debug("Handshake succeeded")
1689
1690
approval_required = False
733
logger.debug(u"Handshake succeeded")
1691
734
try:
1692
try:
1693
fpr = self.fingerprint(self.peer_certificate
1694
(session))
1695
except (TypeError,
1696
gnutls.errors.GNUTLSError) as error:
1697
logger.warning("Bad certificate: %s", error)
1698
return
1699
logger.debug("Fingerprint: %s", fpr)
1700
1701
try:
1702
client = ProxyClient(child_pipe, fpr,
1703
self.client_address)
1704
except KeyError:
1705
return
1706
1707
if client.approval_delay:
1708
delay = client.approval_delay
1709
client.approvals_pending += 1
1710
approval_required = True
1711
1712
while True:
1713
if not client.enabled:
1714
logger.info("Client %s is disabled",
1715
client.name)
1716
if self.server.use_dbus:
1717
# Emit D-Bus signal
1718
client.Rejected("Disabled")
1719
return
1720
1721
if client.approved or not client.approval_delay:
1722
#We are approved or approval is disabled
1723
break
1724
elif client.approved is None:
1725
logger.info("Client %s needs approval",
1726
client.name)
1727
if self.server.use_dbus:
1728
# Emit D-Bus signal
1729
client.NeedApproval(
1730
client.approval_delay_milliseconds(),
1731
client.approved_by_default)
1732
else:
1733
logger.warning("Client %s was not approved",
1734
client.name)
1735
if self.server.use_dbus:
1736
# Emit D-Bus signal
1737
client.Rejected("Denied")
1738
return
1739
1740
#wait until timeout or approved
1741
time = datetime.datetime.now()
1742
client.changedstate.acquire()
1743
client.changedstate.wait(
1744
float(timedelta_to_milliseconds(delay)
1745
/ 1000))
1746
client.changedstate.release()
1747
time2 = datetime.datetime.now()
1748
if (time2 - time) >= delay:
1749
if not client.approved_by_default:
1750
logger.warning("Client %s timed out while"
1751
" waiting for approval",
1752
client.name)
1753
if self.server.use_dbus:
1754
# Emit D-Bus signal
1755
client.Rejected("Approval timed out")
1756
return
1757
else:
1758
break
1759
else:
1760
delay -= time2 - time
1761
1762
sent_size = 0
1763
while sent_size < len(client.secret):
1764
try:
1765
sent = session.send(client.secret[sent_size:])
1766
except gnutls.errors.GNUTLSError as error:
1767
logger.warning("gnutls send failed",
1768
exc_info=error)
1769
return
1770
logger.debug("Sent: %d, remaining: %d",
1771
sent, len(client.secret)
1772
- (sent_size + sent))
1773
sent_size += sent
1774
1775
logger.info("Sending secret to %s", client.name)
1776
# bump the timeout using extended_timeout
1777
client.bump_timeout(client.extended_timeout)
1778
if self.server.use_dbus:
1779
# Emit D-Bus signal
1780
client.GotSecret()
735
fpr = fingerprint(peer_certificate(session))
736
except (TypeError, gnutls.errors.GNUTLSError), error:
737
logger.warning(u"Bad certificate: %s", error)
738
session.bye()
739
return
740
logger.debug(u"Fingerprint: %s", fpr)
1781
741
1782
finally:
1783
if approval_required:
1784
client.approvals_pending -= 1
1785
try:
1786
session.bye()
1787
except gnutls.errors.GNUTLSError as error:
1788
logger.warning("GnuTLS bye failed",
1789
exc_info=error)
1790
1791
@staticmethod
1792
def peer_certificate(session):
1793
"Return the peer's OpenPGP certificate as a bytestring"
1794
# If not an OpenPGP certificate...
1795
if (gnutls.library.functions
1796
.gnutls_certificate_type_get(session._c_object)
1797
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1798
# ...do the normal thing
1799
return session.peer_certificate
1800
list_size = ctypes.c_uint(1)
1801
cert_list = (gnutls.library.functions
1802
.gnutls_certificate_get_peers
1803
(session._c_object, ctypes.byref(list_size)))
1804
if not bool(cert_list) and list_size.value != 0:
1805
raise gnutls.errors.GNUTLSError("error getting peer"
1806
" certificate")
1807
if list_size.value == 0:
1808
return None
1809
cert = cert_list[0]
1810
return ctypes.string_at(cert.data, cert.size)
1811
1812
@staticmethod
1813
def fingerprint(openpgp):
1814
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1815
# New GnuTLS "datum" with the OpenPGP public key
1816
datum = (gnutls.library.types
1817
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1818
ctypes.POINTER
1819
(ctypes.c_ubyte)),
1820
ctypes.c_uint(len(openpgp))))
1821
# New empty GnuTLS certificate
1822
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1823
(gnutls.library.functions
1824
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
1825
# Import the OpenPGP public key into the certificate
1826
(gnutls.library.functions
1827
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1828
gnutls.library.constants
1829
.GNUTLS_OPENPGP_FMT_RAW))
1830
# Verify the self signature in the key
1831
crtverify = ctypes.c_uint()
1832
(gnutls.library.functions
1833
.gnutls_openpgp_crt_verify_self(crt, 0,
1834
ctypes.byref(crtverify)))
1835
if crtverify.value != 0:
1836
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1837
raise (gnutls.errors.CertificateSecurityError
1838
("Verify failed"))
1839
# New buffer for the fingerprint
1840
buf = ctypes.create_string_buffer(20)
1841
buf_len = ctypes.c_size_t()
1842
# Get the fingerprint from the certificate into the buffer
1843
(gnutls.library.functions
1844
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1845
ctypes.byref(buf_len)))
1846
# Deinit the certificate
1847
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1848
# Convert the buffer to a Python bytestring
1849
fpr = ctypes.string_at(buf, buf_len.value)
1850
# Convert the bytestring to hexadecimal notation
1851
hex_fpr = binascii.hexlify(fpr).upper()
1852
return hex_fpr
1853
1854
1855
class MultiprocessingMixIn(object):
1856
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1857
def sub_process_main(self, request, address):
1858
try:
1859
self.finish_request(request, address)
1860
except Exception:
1861
self.handle_error(request, address)
1862
self.close_request(request)
1863
1864
def process_request(self, request, address):
1865
"""Start a new process to process the request."""
1866
proc = multiprocessing.Process(target = self.sub_process_main,
1867
args = (request, address))
1868
proc.start()
1869
return proc
1870
1871
1872
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1873
""" adds a pipe to the MixIn """
742
for c in self.server.clients:
743
if c.fingerprint == fpr:
744
client = c
745
break
746
else:
747
logger.warning(u"Client not found for fingerprint: %s",
748
fpr)
749
ipc.write("NOTFOUND %s\n" % fpr)
750
session.bye()
751
return
752
# Have to check if client.still_valid(), since it is
753
# possible that the client timed out while establishing
754
# the GnuTLS session.
755
if not client.still_valid():
756
logger.warning(u"Client %(name)s is invalid",
757
vars(client))
758
ipc.write("INVALID %s\n" % client.name)
759
session.bye()
760
return
761
ipc.write("SENDING %s\n" % client.name)
762
sent_size = 0
763
while sent_size < len(client.secret):
764
sent = session.send(client.secret[sent_size:])
765
logger.debug(u"Sent: %d, remaining: %d",
766
sent, len(client.secret)
767
- (sent_size + sent))
768
sent_size += sent
769
session.bye()
770
771
772
class ForkingMixInWithPipe(SocketServer.ForkingMixIn, object):
773
"""Like SocketServer.ForkingMixIn, but also pass a pipe.
774
Assumes a gobject.MainLoop event loop.
775
"""
1874
776
def process_request(self, request, client_address):
1875
"""Overrides and wraps the original process_request().
1876
1877
This function creates a new pipe in self.pipe
777
"""This overrides and wraps the original process_request().
778
This function creates a new pipe in self.pipe
1878
779
"""
1879
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1880
1881
proc = MultiprocessingMixIn.process_request(self, request,
1882
client_address)
1883
self.child_pipe.close()
1884
self.add_pipe(parent_pipe, proc)
1885
1886
def add_pipe(self, parent_pipe, proc):
780
self.pipe = os.pipe()
781
super(ForkingMixInWithPipe,
782
self).process_request(request, client_address)
783
os.close(self.pipe[1]) # close write end
784
# Call "handle_ipc" for both data and EOF events
785
gobject.io_add_watch(self.pipe[0],
786
gobject.IO_IN | gobject.IO_HUP,
787
self.handle_ipc)
788
def handle_ipc(source, condition):
1887
789
"""Dummy function; override as necessary"""
1888
raise NotImplementedError
1889
1890
1891
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1892
socketserver.TCPServer, object):
790
os.close(source)
791
return False
792
793
794
class IPv6_TCPServer(ForkingMixInWithPipe,
795
SocketServer.TCPServer, object):
1893
796
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1894
1895
797
Attributes:
798
settings: Server settings
799
clients: Set() of Client objects
1896
800
enabled: Boolean; whether this server is activated yet
1897
interface: None or a network interface name (string)
1898
use_ipv6: Boolean; to use IPv6 or not
1899
801
"""
1900
def __init__(self, server_address, RequestHandlerClass,
1901
interface=None, use_ipv6=True):
1902
self.interface = interface
1903
if use_ipv6:
1904
self.address_family = socket.AF_INET6
1905
socketserver.TCPServer.__init__(self, server_address,
1906
RequestHandlerClass)
802
address_family = socket.AF_INET6
803
def __init__(self, *args, **kwargs):
804
if "settings" in kwargs:
805
self.settings = kwargs["settings"]
806
del kwargs["settings"]
807
if "clients" in kwargs:
808
self.clients = kwargs["clients"]
809
del kwargs["clients"]
810
if "use_ipv6" in kwargs:
811
if not kwargs["use_ipv6"]:
812
self.address_family = socket.AF_INET
813
del kwargs["use_ipv6"]
814
self.enabled = False
815
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
1907
816
def server_bind(self):
1908
817
"""This overrides the normal server_bind() function
1909
818
to bind to an interface if one was specified, and also NOT to
1910
819
bind to an address or port if they were not specified."""
1911
if self.interface is not None:
1912
if SO_BINDTODEVICE is None:
1913
logger.error("SO_BINDTODEVICE does not exist;"
1914
" cannot bind to interface %s",
1915
self.interface)
1916
else:
1917
try:
1918
self.socket.setsockopt(socket.SOL_SOCKET,
1919
SO_BINDTODEVICE,
1920
str(self.interface
1921
+ '\0'))
1922
except socket.error as error:
1923
if error.errno == errno.EPERM:
1924
logger.error("No permission to"
1925
" bind to interface %s",
1926
self.interface)
1927
elif error.errno == errno.ENOPROTOOPT:
1928
logger.error("SO_BINDTODEVICE not available;"
1929
" cannot bind to interface %s",
1930
self.interface)
1931
elif error.errno == errno.ENODEV:
1932
logger.error("Interface %s does not"
1933
" exist, cannot bind",
1934
self.interface)
1935
else:
1936
raise
820
if self.settings["interface"]:
821
# 25 is from /usr/include/asm-i486/socket.h
822
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
823
try:
824
self.socket.setsockopt(socket.SOL_SOCKET,
825
SO_BINDTODEVICE,
826
self.settings["interface"])
827
except socket.error, error:
828
if error[0] == errno.EPERM:
829
logger.error(u"No permission to"
830
u" bind to interface %s",
831
self.settings["interface"])
832
else:
833
raise
1937
834
# Only bind(2) the socket if we really need to.
1938
835
if self.server_address[0] or self.server_address[1]:
1939
836
if not self.server_address[0]:
1946
843
elif not self.server_address[1]:
1947
844
self.server_address = (self.server_address[0],
1948
845
0)
1949
# if self.interface:
846
# if self.settings["interface"]:
1950
847
# self.server_address = (self.server_address[0],
1951
848
# 0, # port
1952
849
# 0, # flowinfo
1953
850
# if_nametoindex
1954
# (self.interface))
1955
return socketserver.TCPServer.server_bind(self)
1956
1957
1958
class MandosServer(IPv6_TCPServer):
1959
"""Mandos server.
1960
1961
Attributes:
1962
clients: set of Client objects
1963
gnutls_priority GnuTLS priority string
1964
use_dbus: Boolean; to emit D-Bus signals or not
1965
1966
Assumes a gobject.MainLoop event loop.
1967
"""
1968
def __init__(self, server_address, RequestHandlerClass,
1969
interface=None, use_ipv6=True, clients=None,
1970
gnutls_priority=None, use_dbus=True):
1971
self.enabled = False
1972
self.clients = clients
1973
if self.clients is None:
1974
self.clients = {}
1975
self.use_dbus = use_dbus
1976
self.gnutls_priority = gnutls_priority
1977
IPv6_TCPServer.__init__(self, server_address,
1978
RequestHandlerClass,
1979
interface = interface,
1980
use_ipv6 = use_ipv6)
851
# (self.settings
852
# ["interface"]))
853
return super(IPv6_TCPServer, self).server_bind()
1981
854
def server_activate(self):
1982
855
if self.enabled:
1983
return socketserver.TCPServer.server_activate(self)
1984
856
return super(IPv6_TCPServer, self).server_activate()
1985
857
def enable(self):
1986
858
self.enabled = True
1987
1988
def add_pipe(self, parent_pipe, proc):
1989
# Call "handle_ipc" for both data and EOF events
1990
gobject.io_add_watch(parent_pipe.fileno(),
1991
gobject.IO_IN | gobject.IO_HUP,
1992
functools.partial(self.handle_ipc,
1993
parent_pipe =
1994
parent_pipe,
1995
proc = proc))
1996
1997
def handle_ipc(self, source, condition, parent_pipe=None,
1998
proc = None, client_object=None):
1999
# error, or the other end of multiprocessing.Pipe has closed
2000
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2001
# Wait for other process to exit
2002
proc.join()
859
def handle_ipc(self, source, condition, file_objects={}):
860
condition_names = {
861
gobject.IO_IN: "IN", # There is data to read.
862
gobject.IO_OUT: "OUT", # Data can be written (without
863
# blocking).
864
gobject.IO_PRI: "PRI", # There is urgent data to read.
865
gobject.IO_ERR: "ERR", # Error condition.
866
gobject.IO_HUP: "HUP" # Hung up (the connection has been
867
# broken, usually for pipes and
868
# sockets).
869
}
870
conditions_string = ' | '.join(name
871
for cond, name in
872
condition_names.iteritems()
873
if cond & condition)
874
logger.debug("Handling IPC: FD = %d, condition = %s", source,
875
conditions_string)
876
877
# Turn the pipe file descriptor into a Python file object
878
if source not in file_objects:
879
file_objects[source] = os.fdopen(source, "r", 1)
880
881
# Read a line from the file object
882
cmdline = file_objects[source].readline()
883
if not cmdline: # Empty line means end of file
884
# close the IPC pipe
885
file_objects[source].close()
886
del file_objects[source]
887
888
# Stop calling this function
2003
889
return False
2004
890
2005
# Read a request from the child
2006
request = parent_pipe.recv()
2007
command = request[0]
891
logger.debug("IPC command: %r\n" % cmdline)
2008
892
2009
if command == 'init':
2010
fpr = request[1]
2011
address = request[2]
2012
2013
for c in self.clients.itervalues():
2014
if c.fingerprint == fpr:
2015
client = c
893
# Parse and act on command
894
cmd, args = cmdline.split(None, 1)
895
if cmd == "NOTFOUND":
896
if self.settings["use_dbus"]:
897
# Emit D-Bus signal
898
mandos_dbus_service.ClientNotFound(args)
899
elif cmd == "INVALID":
900
if self.settings["use_dbus"]:
901
for client in self.clients:
902
if client.name == args:
903
# Emit D-Bus signal
904
client.Rejected()
905
break
906
elif cmd == "SENDING":
907
for client in self.clients:
908
if client.name == args:
909
client.checked_ok()
910
if self.settings["use_dbus"]:
911
# Emit D-Bus signal
912
client.ReceivedSecret()
2016
913
break
2017
else:
2018
logger.info("Client not found for fingerprint: %s, ad"
2019
"dress: %s", fpr, address)
2020
if self.use_dbus:
2021
# Emit D-Bus signal
2022
mandos_dbus_service.ClientNotFound(fpr,
2023
address[0])
2024
parent_pipe.send(False)
2025
return False
2026
2027
gobject.io_add_watch(parent_pipe.fileno(),
2028
gobject.IO_IN | gobject.IO_HUP,
2029
functools.partial(self.handle_ipc,
2030
parent_pipe =
2031
parent_pipe,
2032
proc = proc,
2033
client_object =
2034
client))
2035
parent_pipe.send(True)
2036
# remove the old hook in favor of the new above hook on
2037
# same fileno
2038
return False
2039
if command == 'funcall':
2040
funcname = request[1]
2041
args = request[2]
2042
kwargs = request[3]
2043
2044
parent_pipe.send(('data', getattr(client_object,
2045
funcname)(*args,
2046
**kwargs)))
2047
2048
if command == 'getattr':
2049
attrname = request[1]
2050
if callable(client_object.__getattribute__(attrname)):
2051
parent_pipe.send(('function',))
2052
else:
2053
parent_pipe.send(('data', client_object
2054
.__getattribute__(attrname)))
2055
2056
if command == 'setattr':
2057
attrname = request[1]
2058
value = request[2]
2059
setattr(client_object, attrname, value)
2060
914
else:
915
logger.error("Unknown IPC command: %r", cmdline)
916
917
# Keep calling this function
2061
918
return True
2062
919
2063
920
2072
929
datetime.timedelta(0, 3600)
2073
930
>>> string_to_delta('24h')
2074
931
datetime.timedelta(1)
2075
>>> string_to_delta('1w')
932
>>> string_to_delta(u'1w')
2076
933
datetime.timedelta(7)
2077
934
>>> string_to_delta('5m 30s')
2078
935
datetime.timedelta(0, 330)
2082
939
try:
2083
940
suffix = unicode(s[-1])
2084
941
value = int(s[:-1])
2085
if suffix == "d":
942
if suffix == u"d":
2086
943
delta = datetime.timedelta(value)
2087
elif suffix == "s":
944
elif suffix == u"s":
2088
945
delta = datetime.timedelta(0, value)
2089
elif suffix == "m":
946
elif suffix == u"m":
2090
947
delta = datetime.timedelta(0, 0, 0, 0, value)
2091
elif suffix == "h":
948
elif suffix == u"h":
2092
949
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2093
elif suffix == "w":
950
elif suffix == u"w":
2094
951
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2095
952
else:
2096
raise ValueError("Unknown suffix {0!r}"
2097
.format(suffix))
2098
except (ValueError, IndexError) as e:
2099
raise ValueError(*(e.args))
953
raise ValueError
954
except (ValueError, IndexError):
955
raise ValueError
2100
956
timevalue += delta
2101
957
return timevalue
2102
958
2103
959
960
def server_state_changed(state):
961
"""Derived from the Avahi example code"""
962
if state == avahi.SERVER_COLLISION:
963
logger.error(u"Zeroconf server name collision")
964
service.remove()
965
elif state == avahi.SERVER_RUNNING:
966
service.add()
967
968
969
def entry_group_state_changed(state, error):
970
"""Derived from the Avahi example code"""
971
logger.debug(u"Avahi state change: %i", state)
972
973
if state == avahi.ENTRY_GROUP_ESTABLISHED:
974
logger.debug(u"Zeroconf service established.")
975
elif state == avahi.ENTRY_GROUP_COLLISION:
976
logger.warning(u"Zeroconf service name collision.")
977
service.rename()
978
elif state == avahi.ENTRY_GROUP_FAILURE:
979
logger.critical(u"Avahi: Error in group state changed %s",
980
unicode(error))
981
raise AvahiGroupError(u"State changed: %s" % unicode(error))
982
983
def if_nametoindex(interface):
984
"""Call the C function if_nametoindex(), or equivalent"""
985
global if_nametoindex
986
try:
987
if_nametoindex = (ctypes.cdll.LoadLibrary
988
(ctypes.util.find_library("c"))
989
.if_nametoindex)
990
except (OSError, AttributeError):
991
if "struct" not in sys.modules:
992
import struct
993
if "fcntl" not in sys.modules:
994
import fcntl
995
def if_nametoindex(interface):
996
"Get an interface index the hard way, i.e. using fcntl()"
997
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
998
with closing(socket.socket()) as s:
999
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1000
struct.pack("16s16x", interface))
1001
interface_index = struct.unpack("I", ifreq[16:20])[0]
1002
return interface_index
1003
return if_nametoindex(interface)
1004
1005
2104
1006
def daemon(nochdir = False, noclose = False):
2105
1007
"""See daemon(3). Standard BSD Unix function.
2106
2107
1008
This should really exist as os.daemon, but it doesn't (yet)."""
2108
1009
if os.fork():
2109
1010
sys.exit()
2114
1015
sys.exit()
2115
1016
if not noclose:
2116
1017
# Close all standard open file descriptors
2117
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1018
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2118
1019
if not stat.S_ISCHR(os.fstat(null).st_mode):
2119
1020
raise OSError(errno.ENODEV,
2120
"{0} not a character device"
2121
.format(os.devnull))
1021
"/dev/null not a character device")
2122
1022
os.dup2(null, sys.stdin.fileno())
2123
1023
os.dup2(null, sys.stdout.fileno())
2124
1024
os.dup2(null, sys.stderr.fileno())
2128
1028
2129
1029
def main():
2130
1030
2131
##################################################################
1031
######################################################################
2132
1032
# Parsing of options, both command line and config file
2133
1033
2134
parser = argparse.ArgumentParser()
2135
parser.add_argument("-v", "--version", action="version",
2136
version = "%(prog)s {0}".format(version),
2137
help="show version number and exit")
2138
parser.add_argument("-i", "--interface", metavar="IF",
2139
help="Bind to interface IF")
2140
parser.add_argument("-a", "--address",
2141
help="Address to listen for requests on")
2142
parser.add_argument("-p", "--port", type=int,
2143
help="Port number to receive requests on")
2144
parser.add_argument("--check", action="store_true",
2145
help="Run self-test")
2146
parser.add_argument("--debug", action="store_true",
2147
help="Debug mode; run in foreground and log"
2148
" to terminal")
2149
parser.add_argument("--debuglevel", metavar="LEVEL",
2150
help="Debug level for stdout output")
2151
parser.add_argument("--priority", help="GnuTLS"
2152
" priority string (see GnuTLS documentation)")
2153
parser.add_argument("--servicename",
2154
metavar="NAME", help="Zeroconf service name")
2155
parser.add_argument("--configdir",
2156
default="/etc/mandos", metavar="DIR",
2157
help="Directory to search for configuration"
2158
" files")
2159
parser.add_argument("--no-dbus", action="store_false",
2160
dest="use_dbus", help="Do not provide D-Bus"
2161
" system bus interface")
2162
parser.add_argument("--no-ipv6", action="store_false",
2163
dest="use_ipv6", help="Do not use IPv6")
2164
parser.add_argument("--no-restore", action="store_false",
2165
dest="restore", help="Do not restore stored"
2166
" state")
2167
parser.add_argument("--statedir", metavar="DIR",
2168
help="Directory to save/restore state in")
2169
2170
options = parser.parse_args()
1034
parser = optparse.OptionParser(version = "%%prog %s" % version)
1035
parser.add_option("-i", "--interface", type="string",
1036
metavar="IF", help="Bind to interface IF")
1037
parser.add_option("-a", "--address", type="string",
1038
help="Address to listen for requests on")
1039
parser.add_option("-p", "--port", type="int",
1040
help="Port number to receive requests on")
1041
parser.add_option("--check", action="store_true",
1042
help="Run self-test")
1043
parser.add_option("--debug", action="store_true",
1044
help="Debug mode; run in foreground and log to"
1045
" terminal")
1046
parser.add_option("--priority", type="string", help="GnuTLS"
1047
" priority string (see GnuTLS documentation)")
1048
parser.add_option("--servicename", type="string", metavar="NAME",
1049
help="Zeroconf service name")
1050
parser.add_option("--configdir", type="string",
1051
default="/etc/mandos", metavar="DIR",
1052
help="Directory to search for configuration"
1053
" files")
1054
parser.add_option("--no-dbus", action="store_false",
1055
dest="use_dbus",
1056
help="Do not provide D-Bus system bus"
1057
" interface")
1058
parser.add_option("--no-ipv6", action="store_false",
1059
dest="use_ipv6", help="Do not use IPv6")
1060
options = parser.parse_args()[0]
2171
1061
2172
1062
if options.check:
2173
1063
import doctest
2184
1074
"servicename": "Mandos",
2185
1075
"use_dbus": "True",
2186
1076
"use_ipv6": "True",
2187
"debuglevel": "",
2188
"restore": "True",
2189
"statedir": "/var/lib/mandos"
2190
1077
}
2191
1078
2192
1079
# Parse config file for server-global settings
2193
server_config = configparser.SafeConfigParser(server_defaults)
1080
server_config = ConfigParser.SafeConfigParser(server_defaults)
2194
1081
del server_defaults
2195
server_config.read(os.path.join(options.configdir,
2196
"mandos.conf"))
1082
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2197
1083
# Convert the SafeConfigParser object to a dict
2198
1084
server_settings = server_config.defaults()
2199
1085
# Use the appropriate methods on the non-string config options
2200
for option in ("debug", "use_dbus", "use_ipv6"):
2201
server_settings[option] = server_config.getboolean("DEFAULT",
2202
option)
1086
server_settings["debug"] = server_config.getboolean("DEFAULT",
1087
"debug")
1088
server_settings["use_dbus"] = server_config.getboolean("DEFAULT",
1089
"use_dbus")
1090
server_settings["use_ipv6"] = server_config.getboolean("DEFAULT",
1091
"use_ipv6")
2203
1092
if server_settings["port"]:
2204
1093
server_settings["port"] = server_config.getint("DEFAULT",
2205
1094
"port")
2209
1098
# options, if set.
2210
1099
for option in ("interface", "address", "port", "debug",
2211
1100
"priority", "servicename", "configdir",
2212
"use_dbus", "use_ipv6", "debuglevel", "restore",
2213
"statedir"):
1101
"use_dbus", "use_ipv6"):
2214
1102
value = getattr(options, option)
2215
1103
if value is not None:
2216
1104
server_settings[option] = value
2217
1105
del options
2218
# Force all strings to be unicode
2219
for option in server_settings.keys():
2220
if type(server_settings[option]) is str:
2221
server_settings[option] = unicode(server_settings[option])
2222
1106
# Now we have our good server settings in "server_settings"
2223
1107
2224
1108
##################################################################
2225
1109
2226
1110
# For convenience
2227
1111
debug = server_settings["debug"]
2228
debuglevel = server_settings["debuglevel"]
2229
1112
use_dbus = server_settings["use_dbus"]
2230
1113
use_ipv6 = server_settings["use_ipv6"]
2231
stored_state_path = os.path.join(server_settings["statedir"],
2232
stored_state_file)
2233
1114
2234
if debug:
2235
initlogger(debug, logging.DEBUG)
2236
else:
2237
if not debuglevel:
2238
initlogger(debug)
2239
else:
2240
level = getattr(logging, debuglevel.upper())
2241
initlogger(debug, level)
1115
if not debug:
1116
syslogger.setLevel(logging.WARNING)
1117
console.setLevel(logging.WARNING)
2242
1118
2243
1119
if server_settings["servicename"] != "Mandos":
2244
1120
syslogger.setFormatter(logging.Formatter
2245
('Mandos ({0}) [%(process)d]:'
2246
' %(levelname)s: %(message)s'
2247
.format(server_settings
2248
["servicename"])))
1121
('Mandos (%s) [%%(process)d]:'
1122
' %%(levelname)s: %%(message)s'
1123
% server_settings["servicename"]))
2249
1124
2250
1125
# Parse config file with clients
2251
client_config = configparser.SafeConfigParser(Client
2252
.client_defaults)
1126
client_defaults = { "timeout": "1h",
1127
"interval": "5m",
1128
"checker": "fping -q -- %%(host)s",
1129
"host": "",
1130
}
1131
client_config = ConfigParser.SafeConfigParser(client_defaults)
2253
1132
client_config.read(os.path.join(server_settings["configdir"],
2254
1133
"clients.conf"))
2255
1134
2256
1135
global mandos_dbus_service
2257
1136
mandos_dbus_service = None
2258
1137
2259
tcp_server = MandosServer((server_settings["address"],
2260
server_settings["port"]),
2261
ClientHandler,
2262
interface=(server_settings["interface"]
2263
or None),
2264
use_ipv6=use_ipv6,
2265
gnutls_priority=
2266
server_settings["priority"],
2267
use_dbus=use_dbus)
2268
if not debug:
2269
pidfilename = "/var/run/mandos.pid"
2270
try:
2271
pidfile = open(pidfilename, "w")
2272
except IOError as e:
2273
logger.error("Could not open file %r", pidfilename,
2274
exc_info=e)
1138
clients = Set()
1139
tcp_server = IPv6_TCPServer((server_settings["address"],
1140
server_settings["port"]),
1141
TCP_handler,
1142
settings=server_settings,
1143
clients=clients, use_ipv6=use_ipv6)
1144
pidfilename = "/var/run/mandos.pid"
1145
try:
1146
pidfile = open(pidfilename, "w")
1147
except IOError:
1148
logger.error("Could not open file %r", pidfilename)
2275
1149
2276
for name in ("_mandos", "mandos", "nobody"):
1150
try:
1151
uid = pwd.getpwnam("_mandos").pw_uid
1152
gid = pwd.getpwnam("_mandos").pw_gid
1153
except KeyError:
2277
1154
try:
2278
uid = pwd.getpwnam(name).pw_uid
2279
gid = pwd.getpwnam(name).pw_gid
2280
break
1155
uid = pwd.getpwnam("mandos").pw_uid
1156
gid = pwd.getpwnam("mandos").pw_gid
2281
1157
except KeyError:
2282
continue
2283
else:
2284
uid = 65534
2285
gid = 65534
1158
try:
1159
uid = pwd.getpwnam("nobody").pw_uid
1160
gid = pwd.getpwnam("nogroup").pw_gid
1161
except KeyError:
1162
uid = 65534
1163
gid = 65534
2286
1164
try:
2287
1165
os.setgid(gid)
2288
1166
os.setuid(uid)
2289
except OSError as error:
2290
if error.errno != errno.EPERM:
1167
except OSError, error:
1168
if error[0] != errno.EPERM:
2291
1169
raise error
2292
1170
1171
# Enable all possible GnuTLS debugging
2293
1172
if debug:
2294
# Enable all possible GnuTLS debugging
2295
2296
1173
# "Use a log level over 10 to enable all debugging options."
2297
1174
# - GnuTLS manual
2298
1175
gnutls.library.functions.gnutls_global_set_log_level(11)
2303
1180
2304
1181
(gnutls.library.functions
2305
1182
.gnutls_global_set_log_function(debug_gnutls))
2306
2307
# Redirect stdin so all checkers get /dev/null
2308
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2309
os.dup2(null, sys.stdin.fileno())
2310
if null > 2:
2311
os.close(null)
2312
2313
# Need to fork before connecting to D-Bus
2314
if not debug:
2315
# Close all input and output, do double fork, etc.
2316
daemon()
2317
2318
gobject.threads_init()
1183
1184
global service
1185
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1186
service = AvahiService(name = server_settings["servicename"],
1187
servicetype = "_mandos._tcp",
1188
protocol = protocol)
1189
if server_settings["interface"]:
1190
service.interface = (if_nametoindex
1191
(server_settings["interface"]))
2319
1192
2320
1193
global main_loop
1194
global bus
1195
global server
2321
1196
# From the Avahi example code
2322
DBusGMainLoop(set_as_default=True)
1197
DBusGMainLoop(set_as_default=True )
2323
1198
main_loop = gobject.MainLoop()
2324
1199
bus = dbus.SystemBus()
1200
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1201
avahi.DBUS_PATH_SERVER),
1202
avahi.DBUS_INTERFACE_SERVER)
2325
1203
# End of Avahi example code
2326
1204
if use_dbus:
2327
try:
2328
bus_name = dbus.service.BusName("se.recompile.Mandos",
2329
bus, do_not_queue=True)
2330
old_bus_name = (dbus.service.BusName
2331
("se.bsnet.fukt.Mandos", bus,
2332
do_not_queue=True))
2333
except dbus.exceptions.NameExistsException as e:
2334
logger.error("Disabling D-Bus:", exc_info=e)
2335
use_dbus = False
2336
server_settings["use_dbus"] = False
2337
tcp_server.use_dbus = False
2338
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2339
service = AvahiServiceToSyslog(name =
2340
server_settings["servicename"],
2341
servicetype = "_mandos._tcp",
2342
protocol = protocol, bus = bus)
2343
if server_settings["interface"]:
2344
service.interface = (if_nametoindex
2345
(str(server_settings["interface"])))
2346
2347
global multiprocessing_manager
2348
multiprocessing_manager = multiprocessing.Manager()
2349
2350
client_class = Client
2351
if use_dbus:
2352
client_class = functools.partial(ClientDBus, bus = bus)
2353
2354
client_settings = Client.config_parser(client_config)
2355
old_client_settings = {}
2356
clients_data = {}
2357
2358
# Get client data and settings from last running state.
2359
if server_settings["restore"]:
2360
try:
2361
with open(stored_state_path, "rb") as stored_state:
2362
clients_data, old_client_settings = (pickle.load
2363
(stored_state))
2364
os.remove(stored_state_path)
2365
except IOError as e:
2366
if e.errno == errno.ENOENT:
2367
logger.warning("Could not load persistent state: {0}"
2368
.format(os.strerror(e.errno)))
2369
else:
2370
logger.critical("Could not load persistent state:",
2371
exc_info=e)
2372
raise
2373
except EOFError as e:
2374
logger.warning("Could not load persistent state: "
2375
"EOFError:", exc_info=e)
2376
2377
with PGPEngine() as pgp:
2378
for client_name, client in clients_data.iteritems():
2379
# Decide which value to use after restoring saved state.
2380
# We have three different values: Old config file,
2381
# new config file, and saved state.
2382
# New config value takes precedence if it differs from old
2383
# config value, otherwise use saved state.
2384
for name, value in client_settings[client_name].items():
2385
try:
2386
# For each value in new config, check if it
2387
# differs from the old config value (Except for
2388
# the "secret" attribute)
2389
if (name != "secret" and
2390
value != old_client_settings[client_name]
2391
[name]):
2392
client[name] = value
2393
except KeyError:
2394
pass
2395
2396
# Clients who has passed its expire date can still be
2397
# enabled if its last checker was successful. Clients
2398
# whose checker succeeded before we stored its state is
2399
# assumed to have successfully run all checkers during
2400
# downtime.
2401
if client["enabled"]:
2402
if datetime.datetime.utcnow() >= client["expires"]:
2403
if not client["last_checked_ok"]:
2404
logger.warning(
2405
"disabling client {0} - Client never "
2406
"performed a successful checker"
2407
.format(client_name))
2408
client["enabled"] = False
2409
elif client["last_checker_status"] != 0:
2410
logger.warning(
2411
"disabling client {0} - Client "
2412
"last checker failed with error code {1}"
2413
.format(client_name,
2414
client["last_checker_status"]))
2415
client["enabled"] = False
2416
else:
2417
client["expires"] = (datetime.datetime
2418
.utcnow()
2419
+ client["timeout"])
2420
logger.debug("Last checker succeeded,"
2421
" keeping {0} enabled"
2422
.format(client_name))
2423
try:
2424
client["secret"] = (
2425
pgp.decrypt(client["encrypted_secret"],
2426
client_settings[client_name]
2427
["secret"]))
2428
except PGPError:
2429
# If decryption fails, we use secret from new settings
2430
logger.debug("Failed to decrypt {0} old secret"
2431
.format(client_name))
2432
client["secret"] = (
2433
client_settings[client_name]["secret"])
2434
2435
# Add/remove clients based on new changes made to config
2436
for client_name in (set(old_client_settings)
2437
- set(client_settings)):
2438
del clients_data[client_name]
2439
for client_name in (set(client_settings)
2440
- set(old_client_settings)):
2441
clients_data[client_name] = client_settings[client_name]
2442
2443
# Create all client objects
2444
for client_name, client in clients_data.iteritems():
2445
tcp_server.clients[client_name] = client_class(
2446
name = client_name, settings = client)
2447
2448
if not tcp_server.clients:
2449
logger.warning("No clients defined")
1205
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1206
1207
clients.update(Set(Client(name = section,
1208
config
1209
= dict(client_config.items(section)),
1210
use_dbus = use_dbus)
1211
for section in client_config.sections()))
1212
if not clients:
1213
logger.warning(u"No clients defined")
1214
1215
if debug:
1216
# Redirect stdin so all checkers get /dev/null
1217
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1218
os.dup2(null, sys.stdin.fileno())
1219
if null > 2:
1220
os.close(null)
1221
else:
1222
# No console logging
1223
logger.removeHandler(console)
1224
# Close all input and output, do double fork, etc.
1225
daemon()
1226
1227
try:
1228
with closing(pidfile):
1229
pid = os.getpid()
1230
pidfile.write(str(pid) + "\n")
1231
del pidfile
1232
except IOError:
1233
logger.error(u"Could not write to file %r with PID %d",
1234
pidfilename, pid)
1235
except NameError:
1236
# "pidfile" was never created
1237
pass
1238
del pidfilename
1239
1240
def cleanup():
1241
"Cleanup function; run on exit"
1242
global group
1243
# From the Avahi example code
1244
if not group is None:
1245
group.Free()
1246
group = None
1247
# End of Avahi example code
1248
1249
while clients:
1250
client = clients.pop()
1251
client.disable_hook = None
1252
client.disable()
1253
1254
atexit.register(cleanup)
2450
1255
2451
1256
if not debug:
2452
try:
2453
with pidfile:
2454
pid = os.getpid()
2455
pidfile.write(str(pid) + "\n".encode("utf-8"))
2456
del pidfile
2457
except IOError:
2458
logger.error("Could not write to file %r with PID %d",
2459
pidfilename, pid)
2460
except NameError:
2461
# "pidfile" was never created
2462
pass
2463
del pidfilename
2464
1257
signal.signal(signal.SIGINT, signal.SIG_IGN)
2465
2466
1258
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2467
1259
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2468
1260
2469
1261
if use_dbus:
2470
@alternate_dbus_interfaces({"se.recompile.Mandos":
2471
"se.bsnet.fukt.Mandos"})
2472
class MandosDBusService(DBusObjectWithProperties):
1262
class MandosDBusService(dbus.service.Object):
2473
1263
"""A D-Bus proxy object"""
2474
1264
def __init__(self):
2475
1265
dbus.service.Object.__init__(self, bus, "/")
2476
_interface = "se.recompile.Mandos"
2477
2478
@dbus_interface_annotations(_interface)
2479
def _foo(self):
2480
return { "org.freedesktop.DBus.Property"
2481
".EmitsChangedSignal":
2482
"false"}
2483
2484
@dbus.service.signal(_interface, signature="o")
2485
def ClientAdded(self, objpath):
1266
_interface = u"se.bsnet.fukt.Mandos"
1267
1268
@dbus.service.signal(_interface, signature="oa{sv}")
1269
def ClientAdded(self, objpath, properties):
2486
1270
"D-Bus signal"
2487
1271
pass
2488
1272
2489
@dbus.service.signal(_interface, signature="ss")
2490
def ClientNotFound(self, fingerprint, address):
1273
@dbus.service.signal(_interface, signature="s")
1274
def ClientNotFound(self, fingerprint):
2491
1275
"D-Bus signal"
2492
1276
pass
2493
1277
2499
1283
@dbus.service.method(_interface, out_signature="ao")
2500
1284
def GetAllClients(self):
2501
1285
"D-Bus method"
2502
return dbus.Array(c.dbus_object_path
2503
for c in
2504
tcp_server.clients.itervalues())
1286
return dbus.Array(c.dbus_object_path for c in clients)
2505
1287
2506
@dbus.service.method(_interface,
2507
out_signature="a{oa{sv}}")
1288
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
2508
1289
def GetAllClientsWithProperties(self):
2509
1290
"D-Bus method"
2510
1291
return dbus.Dictionary(
2511
((c.dbus_object_path, c.GetAll(""))
2512
for c in tcp_server.clients.itervalues()),
1292
((c.dbus_object_path, c.GetAllProperties())
1293
for c in clients),
2513
1294
signature="oa{sv}")
2514
1295
2515
1296
@dbus.service.method(_interface, in_signature="o")
2516
1297
def RemoveClient(self, object_path):
2517
1298
"D-Bus method"
2518
for c in tcp_server.clients.itervalues():
1299
for c in clients:
2519
1300
if c.dbus_object_path == object_path:
2520
del tcp_server.clients[c.name]
2521
c.remove_from_connection()
1301
clients.remove(c)
2522
1302
# Don't signal anything except ClientRemoved
2523
c.disable(quiet=True)
1303
c.use_dbus = False
1304
c.disable()
2524
1305
# Emit D-Bus signal
2525
1306
self.ClientRemoved(object_path, c.name)
2526
1307
return
2527
raise KeyError(object_path)
1308
raise KeyError
2528
1309
2529
1310
del _interface
2530
1311
2531
1312
mandos_dbus_service = MandosDBusService()
2532
1313
2533
def cleanup():
2534
"Cleanup function; run on exit"
2535
service.cleanup()
2536
2537
multiprocessing.active_children()
2538
if not (tcp_server.clients or client_settings):
2539
return
2540
2541
# Store client before exiting. Secrets are encrypted with key
2542
# based on what config file has. If config file is
2543
# removed/edited, old secret will thus be unrecovable.
2544
clients = {}
2545
with PGPEngine() as pgp:
2546
for client in tcp_server.clients.itervalues():
2547
key = client_settings[client.name]["secret"]
2548
client.encrypted_secret = pgp.encrypt(client.secret,
2549
key)
2550
client_dict = {}
2551
2552
# A list of attributes that can not be pickled
2553
# + secret.
2554
exclude = set(("bus", "changedstate", "secret",
2555
"checker"))
2556
for name, typ in (inspect.getmembers
2557
(dbus.service.Object)):
2558
exclude.add(name)
2559
2560
client_dict["encrypted_secret"] = (client
2561
.encrypted_secret)
2562
for attr in client.client_structure:
2563
if attr not in exclude:
2564
client_dict[attr] = getattr(client, attr)
2565
2566
clients[client.name] = client_dict
2567
del client_settings[client.name]["secret"]
2568
2569
try:
2570
with (tempfile.NamedTemporaryFile
2571
(mode='wb', suffix=".pickle", prefix='clients-',
2572
dir=os.path.dirname(stored_state_path),
2573
delete=False)) as stored_state:
2574
pickle.dump((clients, client_settings), stored_state)
2575
tempname=stored_state.name
2576
os.rename(tempname, stored_state_path)
2577
except (IOError, OSError) as e:
2578
if not debug:
2579
try:
2580
os.remove(tempname)
2581
except NameError:
2582
pass
2583
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2584
logger.warning("Could not save persistent state: {0}"
2585
.format(os.strerror(e.errno)))
2586
else:
2587
logger.warning("Could not save persistent state:",
2588
exc_info=e)
2589
raise e
2590
2591
# Delete all clients, and settings from config
2592
while tcp_server.clients:
2593
name, client = tcp_server.clients.popitem()
2594
if use_dbus:
2595
client.remove_from_connection()
2596
# Don't signal anything except ClientRemoved
2597
client.disable(quiet=True)
2598
if use_dbus:
2599
# Emit D-Bus signal
2600
mandos_dbus_service.ClientRemoved(client
2601
.dbus_object_path,
2602
client.name)
2603
client_settings.clear()
2604
2605
atexit.register(cleanup)
2606
2607
for client in tcp_server.clients.itervalues():
1314
for client in clients:
2608
1315
if use_dbus:
2609
1316
# Emit D-Bus signal
2610
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2611
# Need to initiate checking of clients
2612
if client.enabled:
2613
client.init_checker()
1317
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1318
client.GetAllProperties())
1319
client.enable()
2614
1320
2615
1321
tcp_server.enable()
2616
1322
tcp_server.server_activate()
2618
1324
# Find out what port we got
2619
1325
service.port = tcp_server.socket.getsockname()[1]
2620
1326
if use_ipv6:
2621
logger.info("Now listening on address %r, port %d,"
2622
" flowinfo %d, scope_id %d",
2623
*tcp_server.socket.getsockname())
1327
logger.info(u"Now listening on address %r, port %d,"
1328
" flowinfo %d, scope_id %d"
1329
% tcp_server.socket.getsockname())
2624
1330
else: # IPv4
2625
logger.info("Now listening on address %r, port %d",
2626
*tcp_server.socket.getsockname())
1331
logger.info(u"Now listening on address %r, port %d"
1332
% tcp_server.socket.getsockname())
2627
1333
2628
1334
#service.interface = tcp_server.socket.getsockname()[3]
2629
1335
2630
1336
try:
2631
1337
# From the Avahi example code
1338
server.connect_to_signal("StateChanged", server_state_changed)
2632
1339
try:
2633
service.activate()
2634
except dbus.exceptions.DBusException as error:
2635
logger.critical("D-Bus Exception", exc_info=error)
2636
cleanup()
1340
server_state_changed(server.GetState())
1341
except dbus.exceptions.DBusException, error:
1342
logger.critical(u"DBusException: %s", error)
2637
1343
sys.exit(1)
2638
1344
# End of Avahi example code
2639
1345
2642
1348
(tcp_server.handle_request
2643
1349
(*args[2:], **kwargs) or True))
2644
1350
2645
logger.debug("Starting main loop")
1351
logger.debug(u"Starting main loop")
2646
1352
main_loop.run()
2647
except AvahiError as error:
2648
logger.critical("Avahi Error", exc_info=error)
2649
cleanup()
1353
except AvahiError, error:
1354
logger.critical(u"AvahiError: %s", error)
2650
1355
sys.exit(1)
2651
1356
except KeyboardInterrupt:
2652
1357
if debug:
2653
print("", file=sys.stderr)
1358
print >> sys.stderr
2654
1359
logger.debug("Server received KeyboardInterrupt")
2655
1360
logger.debug("Server exiting")
2656
# Must run before the D-Bus bus name gets deregistered
2657
cleanup()
2658
1361
2659
1362
if __name__ == '__main__':
2660
1363
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0