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- Committer: Teddy Hogeborn
- Date: 2019-07-30 18:44:31 UTC
- mto: This revision was merged to the branch mainline in revision 1134.
- Revision ID: teddy@recompile.se-20190730184431-nqlgghaw2aqe6if6
Tags: version-1.8.5-1
* Makefile (version): Change to 1.8.5.
* NEWS (Version 1.8.5): Add new entry.
* debian/changelog (1.8.5-1): - '' -
* NEWS (Version 1.8.5): Add new entry.
* debian/changelog (1.8.5-1): - '' -
- files added:
- bugs.xml
- debian/source
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
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
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
32
# Contact the authors at <mandos@recompile.se>.
33
#
34
35
from __future__ import (division, absolute_import, print_function,
36
unicode_literals)
37
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
37
47
import socket
38
import optparse
48
import argparse
39
49
import datetime
40
50
import errno
41
import gnutls.crypto
42
import gnutls.connection
43
import gnutls.errors
44
import gnutls.library.functions
45
import gnutls.library.constants
46
import gnutls.library.types
47
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
48
55
import sys
49
56
import re
50
57
import os
59
66
import struct
60
67
import fcntl
61
68
import functools
62
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
73
import multiprocessing
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
64
80
65
81
import dbus
66
82
import dbus.service
67
import gobject
68
import avahi
83
from gi.repository import GLib
69
84
from dbus.mainloop.glib import DBusGMainLoop
70
85
import ctypes
71
86
import ctypes.util
72
87
import xml.dom.minidom
73
88
import inspect
74
89
90
# Try to find the value of SO_BINDTODEVICE:
75
91
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
76
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
77
95
except AttributeError:
78
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
79
99
from IN import SO_BINDTODEVICE
80
100
except ImportError:
81
SO_BINDTODEVICE = None
82
83
84
version = "1.0.14"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
syslogger = (logging.handlers.SysLogHandler
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
95
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
114
115
if sys.version_info.major == 2:
116
str = unicode
117
118
version = "1.8.5"
119
stored_state_file = "clients.pickle"
120
121
logger = logging.getLogger()
122
syslogger = None
123
124
try:
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
127
except (OSError, AttributeError):
128
129
def if_nametoindex(interface):
130
"Get an interface index the hard way, i.e. using fcntl()"
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
132
with contextlib.closing(socket.socket()) as s:
133
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
136
return interface_index
137
138
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
155
def initlogger(debug, level=logging.WARNING):
156
"""init logger and add loglevel"""
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
162
syslogger.setFormatter(logging.Formatter
163
('Mandos [%(process)d]: %(levelname)s:'
164
' %(message)s'))
165
logger.addHandler(syslogger)
166
167
if debug:
168
console = logging.StreamHandler()
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
170
' [%(process)d]:'
171
' %(levelname)s:'
172
' %(message)s'))
173
logger.addHandler(console)
174
logger.setLevel(level)
175
176
177
class PGPError(Exception):
178
"""Exception if encryption/decryption fails"""
179
pass
180
181
182
class PGPEngine(object):
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
185
def __init__(self):
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
198
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
200
'--force-mdc',
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
206
def __enter__(self):
207
return self
208
209
def __exit__(self, exc_type, exc_value, traceback):
210
self._cleanup()
211
return False
212
213
def __del__(self):
214
self._cleanup()
215
216
def _cleanup(self):
217
if self.tempdir is not None:
218
# Delete contents of tempdir
219
for root, dirs, files in os.walk(self.tempdir,
220
topdown=False):
221
for filename in files:
222
os.remove(os.path.join(root, filename))
223
for dirname in dirs:
224
os.rmdir(os.path.join(root, dirname))
225
# Remove tempdir
226
os.rmdir(self.tempdir)
227
self.tempdir = None
228
229
def password_encode(self, password):
230
# Passphrase can not be empty and can not contain newlines or
231
# NUL bytes. So we prefix it and hex encode it.
232
encoded = b"mandos" + binascii.hexlify(password)
233
if len(encoded) > 2048:
234
# GnuPG can't handle long passwords, so encode differently
235
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
236
.replace(b"\n", b"\\n")
237
.replace(b"\0", b"\\x00"))
238
return encoded
239
240
def encrypt(self, data, password):
241
passphrase = self.password_encode(password)
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
244
passfile.write(passphrase)
245
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
247
'--passphrase-file',
248
passfile.name]
249
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
254
if proc.returncode != 0:
255
raise PGPError(err)
256
return ciphertext
257
258
def decrypt(self, data, password):
259
passphrase = self.password_encode(password)
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
262
passfile.write(passphrase)
263
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
265
'--passphrase-file',
266
passfile.name]
267
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
272
if proc.returncode != 0:
273
raise PGPError(err)
274
return decrypted_plaintext
275
276
277
# Pretend that we have an Avahi module
278
class avahi(object):
279
"""This isn't so much a class as it is a module-like namespace."""
280
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
284
DBUS_NAME = "org.freedesktop.Avahi"
285
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
DBUS_PATH_SERVER = "/"
288
289
@staticmethod
290
def string_array_to_txt_array(t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
101
302
102
303
class AvahiError(Exception):
103
304
def __init__(self, value, *args, **kwargs):
104
305
self.value = value
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
306
return super(AvahiError, self).__init__(value, *args,
307
**kwargs)
308
108
309
109
310
class AvahiServiceError(AvahiError):
110
311
pass
111
312
313
112
314
class AvahiGroupError(AvahiError):
113
315
pass
114
316
115
317
116
318
class AvahiService(object):
117
319
"""An Avahi (Zeroconf) service.
118
320
119
321
Attributes:
120
322
interface: integer; avahi.IF_UNSPEC or an interface index.
121
323
Used to optionally bind to the specified interface.
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
124
See <http://www.dns-sd.org/ServiceTypes.html>
324
name: string; Example: 'Mandos'
325
type: string; Example: '_mandos._tcp'.
326
See <https://www.iana.org/assignments/service-names-port-numbers>
125
327
port: integer; what port to announce
126
328
TXT: list of strings; TXT record for the service
127
329
domain: string; Domain to publish on, default to .local if empty.
133
335
server: D-Bus Server
134
336
bus: dbus.SystemBus()
135
337
"""
136
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
139
protocol = avahi.PROTO_UNSPEC, bus = None):
338
339
def __init__(self,
340
interface=avahi.IF_UNSPEC,
341
name=None,
342
servicetype=None,
343
port=None,
344
TXT=None,
345
domain="",
346
host="",
347
max_renames=32768,
348
protocol=avahi.PROTO_UNSPEC,
349
bus=None):
140
350
self.interface = interface
141
351
self.name = name
142
352
self.type = servicetype
150
360
self.group = None # our entry group
151
361
self.server = None
152
362
self.bus = bus
153
def rename(self):
363
self.entry_group_state_changed_match = None
364
365
def rename(self, remove=True):
154
366
"""Derived from the Avahi example code"""
155
367
if self.rename_count >= self.max_renames:
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
368
logger.critical("No suitable Zeroconf service name found"
369
" after %i retries, exiting.",
158
370
self.rename_count)
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
371
raise AvahiServiceError("Too many renames")
372
self.name = str(
373
self.server.GetAlternativeServiceName(self.name))
374
self.rename_count += 1
375
logger.info("Changing Zeroconf service name to %r ...",
162
376
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
self.remove()
377
if remove:
378
self.remove()
168
379
try:
169
380
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
172
self.cleanup()
173
os._exit(1)
174
self.rename_count += 1
381
except dbus.exceptions.DBusException as error:
382
if (error.get_dbus_name()
383
== "org.freedesktop.Avahi.CollisionError"):
384
logger.info("Local Zeroconf service name collision.")
385
return self.rename(remove=False)
386
else:
387
logger.critical("D-Bus Exception", exc_info=error)
388
self.cleanup()
389
os._exit(1)
390
175
391
def remove(self):
176
392
"""Derived from the Avahi example code"""
393
if self.entry_group_state_changed_match is not None:
394
self.entry_group_state_changed_match.remove()
395
self.entry_group_state_changed_match = None
177
396
if self.group is not None:
178
397
self.group.Reset()
398
179
399
def add(self):
180
400
"""Derived from the Avahi example code"""
401
self.remove()
181
402
if self.group is None:
182
403
self.group = dbus.Interface(
183
404
self.bus.get_object(avahi.DBUS_NAME,
184
405
self.server.EntryGroupNew()),
185
406
avahi.DBUS_INTERFACE_ENTRY_GROUP)
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
407
self.entry_group_state_changed_match = (
408
self.group.connect_to_signal(
409
'StateChanged', self.entry_group_state_changed))
410
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
190
411
self.name, self.type)
191
412
self.group.AddService(
192
413
self.interface,
197
418
dbus.UInt16(self.port),
198
419
avahi.string_array_to_txt_array(self.TXT))
199
420
self.group.Commit()
421
200
422
def entry_group_state_changed(self, state, error):
201
423
"""Derived from the Avahi example code"""
202
logger.debug(u"Avahi entry group state change: %i", state)
203
424
logger.debug("Avahi entry group state change: %i", state)
425
204
426
if state == avahi.ENTRY_GROUP_ESTABLISHED:
205
logger.debug(u"Zeroconf service established.")
427
logger.debug("Zeroconf service established.")
206
428
elif state == avahi.ENTRY_GROUP_COLLISION:
207
logger.warning(u"Zeroconf service name collision.")
429
logger.info("Zeroconf service name collision.")
208
430
self.rename()
209
431
elif state == avahi.ENTRY_GROUP_FAILURE:
210
logger.critical(u"Avahi: Error in group state changed %s",
211
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
432
logger.critical("Avahi: Error in group state changed %s",
433
str(error))
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
214
436
def cleanup(self):
215
437
"""Derived from the Avahi example code"""
216
438
if self.group is not None:
217
self.group.Free()
439
try:
440
self.group.Free()
441
except (dbus.exceptions.UnknownMethodException,
442
dbus.exceptions.DBusException):
443
pass
218
444
self.group = None
219
def server_state_changed(self, state):
445
self.remove()
446
447
def server_state_changed(self, state, error=None):
220
448
"""Derived from the Avahi example code"""
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
449
logger.debug("Avahi server state change: %i", state)
450
bad_states = {
451
avahi.SERVER_INVALID: "Zeroconf server invalid",
452
avahi.SERVER_REGISTERING: None,
453
avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
avahi.SERVER_FAILURE: "Zeroconf server failure",
455
}
456
if state in bad_states:
457
if bad_states[state] is not None:
458
if error is None:
459
logger.error(bad_states[state])
460
else:
461
logger.error(bad_states[state] + ": %r", error)
462
self.cleanup()
225
463
elif state == avahi.SERVER_RUNNING:
226
self.add()
464
try:
465
self.add()
466
except dbus.exceptions.DBusException as error:
467
if (error.get_dbus_name()
468
== "org.freedesktop.Avahi.CollisionError"):
469
logger.info("Local Zeroconf service name"
470
" collision.")
471
return self.rename(remove=False)
472
else:
473
logger.critical("D-Bus Exception", exc_info=error)
474
self.cleanup()
475
os._exit(1)
476
else:
477
if error is None:
478
logger.debug("Unknown state: %r", state)
479
else:
480
logger.debug("Unknown state: %r: %r", state, error)
481
227
482
def activate(self):
228
483
"""Derived from the Avahi example code"""
229
484
if self.server is None:
230
485
self.server = dbus.Interface(
231
486
self.bus.get_object(avahi.DBUS_NAME,
232
avahi.DBUS_PATH_SERVER),
487
avahi.DBUS_PATH_SERVER,
488
follow_name_owner_changes=True),
233
489
avahi.DBUS_INTERFACE_SERVER)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
490
self.server.connect_to_signal("StateChanged",
491
self.server_state_changed)
236
492
self.server_state_changed(self.server.GetState())
237
493
238
494
495
class AvahiServiceToSyslog(AvahiService):
496
def rename(self, *args, **kwargs):
497
"""Add the new name to the syslog messages"""
498
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
499
syslogger.setFormatter(logging.Formatter(
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
.format(self.name)))
502
return ret
503
504
505
# Pretend that we have a GnuTLS module
506
class gnutls(object):
507
"""This isn't so much a class as it is a module-like namespace."""
508
509
library = ctypes.util.find_library("gnutls")
510
if library is None:
511
library = ctypes.util.find_library("gnutls-deb0")
512
_library = ctypes.cdll.LoadLibrary(library)
513
del library
514
515
# Unless otherwise indicated, the constants and types below are
516
# all from the gnutls/gnutls.h C header file.
517
518
# Constants
519
E_SUCCESS = 0
520
E_INTERRUPTED = -52
521
E_AGAIN = -28
522
CRT_OPENPGP = 2
523
CRT_RAWPK = 3
524
CLIENT = 2
525
SHUT_RDWR = 0
526
CRD_CERTIFICATE = 1
527
E_NO_CERTIFICATE_FOUND = -49
528
X509_FMT_DER = 0
529
NO_TICKETS = 1<<10
530
ENABLE_RAWPK = 1<<18
531
CTYPE_PEERS = 3
532
KEYID_USE_SHA256 = 1 # gnutls/x509.h
533
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
534
535
# Types
536
class session_int(ctypes.Structure):
537
_fields_ = []
538
session_t = ctypes.POINTER(session_int)
539
540
class certificate_credentials_st(ctypes.Structure):
541
_fields_ = []
542
certificate_credentials_t = ctypes.POINTER(
543
certificate_credentials_st)
544
certificate_type_t = ctypes.c_int
545
546
class datum_t(ctypes.Structure):
547
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
548
('size', ctypes.c_uint)]
549
550
class openpgp_crt_int(ctypes.Structure):
551
_fields_ = []
552
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
553
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
554
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
555
credentials_type_t = ctypes.c_int
556
transport_ptr_t = ctypes.c_void_p
557
close_request_t = ctypes.c_int
558
559
# Exceptions
560
class Error(Exception):
561
def __init__(self, message=None, code=None, args=()):
562
# Default usage is by a message string, but if a return
563
# code is passed, convert it to a string with
564
# gnutls.strerror()
565
self.code = code
566
if message is None and code is not None:
567
message = gnutls.strerror(code)
568
return super(gnutls.Error, self).__init__(
569
message, *args)
570
571
class CertificateSecurityError(Error):
572
pass
573
574
# Classes
575
class Credentials(object):
576
def __init__(self):
577
self._c_object = gnutls.certificate_credentials_t()
578
gnutls.certificate_allocate_credentials(
579
ctypes.byref(self._c_object))
580
self.type = gnutls.CRD_CERTIFICATE
581
582
def __del__(self):
583
gnutls.certificate_free_credentials(self._c_object)
584
585
class ClientSession(object):
586
def __init__(self, socket, credentials=None):
587
self._c_object = gnutls.session_t()
588
gnutls_flags = gnutls.CLIENT
589
if gnutls.check_version(b"3.5.6"):
590
gnutls_flags |= gnutls.NO_TICKETS
591
if gnutls.has_rawpk:
592
gnutls_flags |= gnutls.ENABLE_RAWPK
593
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
594
del gnutls_flags
595
gnutls.set_default_priority(self._c_object)
596
gnutls.transport_set_ptr(self._c_object, socket.fileno())
597
gnutls.handshake_set_private_extensions(self._c_object,
598
True)
599
self.socket = socket
600
if credentials is None:
601
credentials = gnutls.Credentials()
602
gnutls.credentials_set(self._c_object, credentials.type,
603
ctypes.cast(credentials._c_object,
604
ctypes.c_void_p))
605
self.credentials = credentials
606
607
def __del__(self):
608
gnutls.deinit(self._c_object)
609
610
def handshake(self):
611
return gnutls.handshake(self._c_object)
612
613
def send(self, data):
614
data = bytes(data)
615
data_len = len(data)
616
while data_len > 0:
617
data_len -= gnutls.record_send(self._c_object,
618
data[-data_len:],
619
data_len)
620
621
def bye(self):
622
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
623
624
# Error handling functions
625
def _error_code(result):
626
"""A function to raise exceptions on errors, suitable
627
for the 'restype' attribute on ctypes functions"""
628
if result >= 0:
629
return result
630
if result == gnutls.E_NO_CERTIFICATE_FOUND:
631
raise gnutls.CertificateSecurityError(code=result)
632
raise gnutls.Error(code=result)
633
634
def _retry_on_error(result, func, arguments):
635
"""A function to retry on some errors, suitable
636
for the 'errcheck' attribute on ctypes functions"""
637
while result < 0:
638
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
639
return _error_code(result)
640
result = func(*arguments)
641
return result
642
643
# Unless otherwise indicated, the function declarations below are
644
# all from the gnutls/gnutls.h C header file.
645
646
# Functions
647
priority_set_direct = _library.gnutls_priority_set_direct
648
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
649
ctypes.POINTER(ctypes.c_char_p)]
650
priority_set_direct.restype = _error_code
651
652
init = _library.gnutls_init
653
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
654
init.restype = _error_code
655
656
set_default_priority = _library.gnutls_set_default_priority
657
set_default_priority.argtypes = [session_t]
658
set_default_priority.restype = _error_code
659
660
record_send = _library.gnutls_record_send
661
record_send.argtypes = [session_t, ctypes.c_void_p,
662
ctypes.c_size_t]
663
record_send.restype = ctypes.c_ssize_t
664
record_send.errcheck = _retry_on_error
665
666
certificate_allocate_credentials = (
667
_library.gnutls_certificate_allocate_credentials)
668
certificate_allocate_credentials.argtypes = [
669
ctypes.POINTER(certificate_credentials_t)]
670
certificate_allocate_credentials.restype = _error_code
671
672
certificate_free_credentials = (
673
_library.gnutls_certificate_free_credentials)
674
certificate_free_credentials.argtypes = [
675
certificate_credentials_t]
676
certificate_free_credentials.restype = None
677
678
handshake_set_private_extensions = (
679
_library.gnutls_handshake_set_private_extensions)
680
handshake_set_private_extensions.argtypes = [session_t,
681
ctypes.c_int]
682
handshake_set_private_extensions.restype = None
683
684
credentials_set = _library.gnutls_credentials_set
685
credentials_set.argtypes = [session_t, credentials_type_t,
686
ctypes.c_void_p]
687
credentials_set.restype = _error_code
688
689
strerror = _library.gnutls_strerror
690
strerror.argtypes = [ctypes.c_int]
691
strerror.restype = ctypes.c_char_p
692
693
certificate_type_get = _library.gnutls_certificate_type_get
694
certificate_type_get.argtypes = [session_t]
695
certificate_type_get.restype = _error_code
696
697
certificate_get_peers = _library.gnutls_certificate_get_peers
698
certificate_get_peers.argtypes = [session_t,
699
ctypes.POINTER(ctypes.c_uint)]
700
certificate_get_peers.restype = ctypes.POINTER(datum_t)
701
702
global_set_log_level = _library.gnutls_global_set_log_level
703
global_set_log_level.argtypes = [ctypes.c_int]
704
global_set_log_level.restype = None
705
706
global_set_log_function = _library.gnutls_global_set_log_function
707
global_set_log_function.argtypes = [log_func]
708
global_set_log_function.restype = None
709
710
deinit = _library.gnutls_deinit
711
deinit.argtypes = [session_t]
712
deinit.restype = None
713
714
handshake = _library.gnutls_handshake
715
handshake.argtypes = [session_t]
716
handshake.restype = _error_code
717
handshake.errcheck = _retry_on_error
718
719
transport_set_ptr = _library.gnutls_transport_set_ptr
720
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
721
transport_set_ptr.restype = None
722
723
bye = _library.gnutls_bye
724
bye.argtypes = [session_t, close_request_t]
725
bye.restype = _error_code
726
bye.errcheck = _retry_on_error
727
728
check_version = _library.gnutls_check_version
729
check_version.argtypes = [ctypes.c_char_p]
730
check_version.restype = ctypes.c_char_p
731
732
_need_version = b"3.3.0"
733
if check_version(_need_version) is None:
734
raise self.Error("Needs GnuTLS {} or later"
735
.format(_need_version))
736
737
_tls_rawpk_version = b"3.6.6"
738
has_rawpk = bool(check_version(_tls_rawpk_version))
739
740
if has_rawpk:
741
# Types
742
class pubkey_st(ctypes.Structure):
743
_fields = []
744
pubkey_t = ctypes.POINTER(pubkey_st)
745
746
x509_crt_fmt_t = ctypes.c_int
747
748
# All the function declarations below are from gnutls/abstract.h
749
pubkey_init = _library.gnutls_pubkey_init
750
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
751
pubkey_init.restype = _error_code
752
753
pubkey_import = _library.gnutls_pubkey_import
754
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
755
x509_crt_fmt_t]
756
pubkey_import.restype = _error_code
757
758
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
759
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
760
ctypes.POINTER(ctypes.c_ubyte),
761
ctypes.POINTER(ctypes.c_size_t)]
762
pubkey_get_key_id.restype = _error_code
763
764
pubkey_deinit = _library.gnutls_pubkey_deinit
765
pubkey_deinit.argtypes = [pubkey_t]
766
pubkey_deinit.restype = None
767
else:
768
# All the function declarations below are from gnutls/openpgp.h
769
770
openpgp_crt_init = _library.gnutls_openpgp_crt_init
771
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
772
openpgp_crt_init.restype = _error_code
773
774
openpgp_crt_import = _library.gnutls_openpgp_crt_import
775
openpgp_crt_import.argtypes = [openpgp_crt_t,
776
ctypes.POINTER(datum_t),
777
openpgp_crt_fmt_t]
778
openpgp_crt_import.restype = _error_code
779
780
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
781
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
782
ctypes.POINTER(ctypes.c_uint)]
783
openpgp_crt_verify_self.restype = _error_code
784
785
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
786
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
787
openpgp_crt_deinit.restype = None
788
789
openpgp_crt_get_fingerprint = (
790
_library.gnutls_openpgp_crt_get_fingerprint)
791
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
792
ctypes.c_void_p,
793
ctypes.POINTER(
794
ctypes.c_size_t)]
795
openpgp_crt_get_fingerprint.restype = _error_code
796
797
if check_version(b"3.6.4"):
798
certificate_type_get2 = _library.gnutls_certificate_type_get2
799
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
800
certificate_type_get2.restype = _error_code
801
802
# Remove non-public functions
803
del _error_code, _retry_on_error
804
805
806
def call_pipe(connection, # : multiprocessing.Connection
807
func, *args, **kwargs):
808
"""This function is meant to be called by multiprocessing.Process
809
810
This function runs func(*args, **kwargs), and writes the resulting
811
return value on the provided multiprocessing.Connection.
812
"""
813
connection.send(func(*args, **kwargs))
814
connection.close()
815
816
239
817
class Client(object):
240
818
"""A representation of a client host served by this server.
241
819
242
820
Attributes:
821
approved: bool(); 'None' if not yet approved/disapproved
822
approval_delay: datetime.timedelta(); Time to wait for approval
823
approval_duration: datetime.timedelta(); Duration of one approval
824
checker: multiprocessing.Process(); a running checker process used
825
to see if the client lives. 'None' if no process is
826
running.
827
checker_callback_tag: a GLib event source tag, or None
828
checker_command: string; External command which is run to check
829
if client lives. %() expansions are done at
830
runtime with vars(self) as dict, so that for
831
instance %(name)s can be used in the command.
832
checker_initiator_tag: a GLib event source tag, or None
833
created: datetime.datetime(); (UTC) object creation
834
client_structure: Object describing what attributes a client has
835
and is used for storing the client at exit
836
current_checker_command: string; current running checker_command
837
disable_initiator_tag: a GLib event source tag, or None
838
enabled: bool()
839
fingerprint: string (40 or 32 hexadecimal digits); used to
840
uniquely identify an OpenPGP client
841
key_id: string (64 hexadecimal digits); used to uniquely identify
842
a client using raw public keys
843
host: string; available for use by the checker command
844
interval: datetime.timedelta(); How often to start a new checker
845
last_approval_request: datetime.datetime(); (UTC) or None
846
last_checked_ok: datetime.datetime(); (UTC) or None
847
last_checker_status: integer between 0 and 255 reflecting exit
848
status of last checker. -1 reflects crashed
849
checker, -2 means no checker completed yet.
850
last_checker_signal: The signal which killed the last checker, if
851
last_checker_status is -1
852
last_enabled: datetime.datetime(); (UTC) or None
243
853
name: string; from the config file, used in log messages and
244
854
D-Bus identifiers
245
fingerprint: string (40 or 32 hexadecimal digits); used to
246
uniquely identify the client
247
855
secret: bytestring; sent verbatim (over TLS) to client
248
host: string; available for use by the checker command
249
created: datetime.datetime(); (UTC) object creation
250
last_enabled: datetime.datetime(); (UTC)
251
enabled: bool()
252
last_checked_ok: datetime.datetime(); (UTC) or None
253
856
timeout: datetime.timedelta(); How long from last_checked_ok
254
857
until this client is disabled
255
interval: datetime.timedelta(); How often to start a new checker
256
disable_hook: If set, called by disable() as disable_hook(self)
257
checker: subprocess.Popen(); a running checker process used
258
to see if the client lives.
259
'None' if no process is running.
260
checker_initiator_tag: a gobject event source tag, or None
261
disable_initiator_tag: - '' -
262
checker_callback_tag: - '' -
263
checker_command: string; External command which is run to check if
264
client lives. %() expansions are done at
265
runtime with vars(self) as dict, so that for
266
instance %(name)s can be used in the command.
267
current_checker_command: string; current running checker_command
268
approval_delay: datetime.timedelta(); Time to wait for approval
269
_approved: bool(); 'None' if not yet approved/disapproved
270
approval_duration: datetime.timedelta(); Duration of one approval
858
extended_timeout: extra long timeout when secret has been sent
859
runtime_expansions: Allowed attributes for runtime expansion.
860
expires: datetime.datetime(); time (UTC) when a client will be
861
disabled, or None
862
server_settings: The server_settings dict from main()
271
863
"""
272
864
865
runtime_expansions = ("approval_delay", "approval_duration",
866
"created", "enabled", "expires", "key_id",
867
"fingerprint", "host", "interval",
868
"last_approval_request", "last_checked_ok",
869
"last_enabled", "name", "timeout")
870
client_defaults = {
871
"timeout": "PT5M",
872
"extended_timeout": "PT15M",
873
"interval": "PT2M",
874
"checker": "fping -q -- %%(host)s",
875
"host": "",
876
"approval_delay": "PT0S",
877
"approval_duration": "PT1S",
878
"approved_by_default": "True",
879
"enabled": "True",
880
}
881
273
882
@staticmethod
274
def _timedelta_to_milliseconds(td):
275
"Convert a datetime.timedelta() to milliseconds"
276
return ((td.days * 24 * 60 * 60 * 1000)
277
+ (td.seconds * 1000)
278
+ (td.microseconds // 1000))
279
280
def timeout_milliseconds(self):
281
"Return the 'timeout' attribute in milliseconds"
282
return self._timedelta_to_milliseconds(self.timeout)
283
284
def interval_milliseconds(self):
285
"Return the 'interval' attribute in milliseconds"
286
return self._timedelta_to_milliseconds(self.interval)
287
288
def approval_delay_milliseconds(self):
289
return self._timedelta_to_milliseconds(self.approval_delay)
290
291
def __init__(self, name = None, disable_hook=None, config=None):
292
"""Note: the 'checker' key in 'config' sets the
293
'checker_command' attribute and *not* the 'checker'
294
attribute."""
883
def config_parser(config):
884
"""Construct a new dict of client settings of this form:
885
{ client_name: {setting_name: value, ...}, ...}
886
with exceptions for any special settings as defined above.
887
NOTE: Must be a pure function. Must return the same result
888
value given the same arguments.
889
"""
890
settings = {}
891
for client_name in config.sections():
892
section = dict(config.items(client_name))
893
client = settings[client_name] = {}
894
895
client["host"] = section["host"]
896
# Reformat values from string types to Python types
897
client["approved_by_default"] = config.getboolean(
898
client_name, "approved_by_default")
899
client["enabled"] = config.getboolean(client_name,
900
"enabled")
901
902
# Uppercase and remove spaces from key_id and fingerprint
903
# for later comparison purposes with return value from the
904
# key_id() and fingerprint() functions
905
client["key_id"] = (section.get("key_id", "").upper()
906
.replace(" ", ""))
907
client["fingerprint"] = (section["fingerprint"].upper()
908
.replace(" ", ""))
909
if "secret" in section:
910
client["secret"] = codecs.decode(section["secret"]
911
.encode("utf-8"),
912
"base64")
913
elif "secfile" in section:
914
with open(os.path.expanduser(os.path.expandvars
915
(section["secfile"])),
916
"rb") as secfile:
917
client["secret"] = secfile.read()
918
else:
919
raise TypeError("No secret or secfile for section {}"
920
.format(section))
921
client["timeout"] = string_to_delta(section["timeout"])
922
client["extended_timeout"] = string_to_delta(
923
section["extended_timeout"])
924
client["interval"] = string_to_delta(section["interval"])
925
client["approval_delay"] = string_to_delta(
926
section["approval_delay"])
927
client["approval_duration"] = string_to_delta(
928
section["approval_duration"])
929
client["checker_command"] = section["checker"]
930
client["last_approval_request"] = None
931
client["last_checked_ok"] = None
932
client["last_checker_status"] = -2
933
934
return settings
935
936
def __init__(self, settings, name=None, server_settings=None):
295
937
self.name = name
296
if config is None:
297
config = {}
298
logger.debug(u"Creating client %r", self.name)
299
# Uppercase and remove spaces from fingerprint for later
300
# comparison purposes with return value from the fingerprint()
301
# function
302
self.fingerprint = (config[u"fingerprint"].upper()
303
.replace(u" ", u""))
304
logger.debug(u" Fingerprint: %s", self.fingerprint)
305
if u"secret" in config:
306
self.secret = config[u"secret"].decode(u"base64")
307
elif u"secfile" in config:
308
with open(os.path.expanduser(os.path.expandvars
309
(config[u"secfile"])),
310
"rb") as secfile:
311
self.secret = secfile.read()
938
if server_settings is None:
939
server_settings = {}
940
self.server_settings = server_settings
941
# adding all client settings
942
for setting, value in settings.items():
943
setattr(self, setting, value)
944
945
if self.enabled:
946
if not hasattr(self, "last_enabled"):
947
self.last_enabled = datetime.datetime.utcnow()
948
if not hasattr(self, "expires"):
949
self.expires = (datetime.datetime.utcnow()
950
+ self.timeout)
312
951
else:
313
raise TypeError(u"No secret or secfile for client %s"
314
% self.name)
315
self.host = config.get(u"host", u"")
316
self.created = datetime.datetime.utcnow()
317
self.enabled = False
318
self.last_enabled = None
319
self.last_checked_ok = None
320
self.timeout = string_to_delta(config[u"timeout"])
321
self.interval = string_to_delta(config[u"interval"])
322
self.disable_hook = disable_hook
952
self.last_enabled = None
953
self.expires = None
954
955
logger.debug("Creating client %r", self.name)
956
logger.debug(" Key ID: %s", self.key_id)
957
logger.debug(" Fingerprint: %s", self.fingerprint)
958
self.created = settings.get("created",
959
datetime.datetime.utcnow())
960
961
# attributes specific for this server instance
323
962
self.checker = None
324
963
self.checker_initiator_tag = None
325
964
self.disable_initiator_tag = None
326
965
self.checker_callback_tag = None
327
self.checker_command = config[u"checker"]
328
966
self.current_checker_command = None
329
self.last_connect = None
330
self._approved = None
331
self.approved_by_default = config.get(u"approved_by_default",
332
True)
967
self.approved = None
333
968
self.approvals_pending = 0
334
self.approval_delay = string_to_delta(
335
config[u"approval_delay"])
336
self.approval_duration = string_to_delta(
337
config[u"approval_duration"])
338
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
339
969
self.changedstate = multiprocessing_manager.Condition(
970
multiprocessing_manager.Lock())
971
self.client_structure = [attr
972
for attr in self.__dict__.keys()
973
if not attr.startswith("_")]
974
self.client_structure.append("client_structure")
975
976
for name, t in inspect.getmembers(
977
type(self), lambda obj: isinstance(obj, property)):
978
if not name.startswith("_"):
979
self.client_structure.append(name)
980
981
# Send notice to process children that client state has changed
340
982
def send_changedstate(self):
341
self.changedstate.acquire()
342
self.changedstate.notify_all()
343
self.changedstate.release()
344
983
with self.changedstate:
984
self.changedstate.notify_all()
985
345
986
def enable(self):
346
987
"""Start this client's checker and timeout hooks"""
347
if getattr(self, u"enabled", False):
988
if getattr(self, "enabled", False):
348
989
# Already enabled
349
990
return
350
self.send_changedstate()
991
self.expires = datetime.datetime.utcnow() + self.timeout
992
self.enabled = True
351
993
self.last_enabled = datetime.datetime.utcnow()
994
self.init_checker()
995
self.send_changedstate()
996
997
def disable(self, quiet=True):
998
"""Disable this client."""
999
if not getattr(self, "enabled", False):
1000
return False
1001
if not quiet:
1002
logger.info("Disabling client %s", self.name)
1003
if getattr(self, "disable_initiator_tag", None) is not None:
1004
GLib.source_remove(self.disable_initiator_tag)
1005
self.disable_initiator_tag = None
1006
self.expires = None
1007
if getattr(self, "checker_initiator_tag", None) is not None:
1008
GLib.source_remove(self.checker_initiator_tag)
1009
self.checker_initiator_tag = None
1010
self.stop_checker()
1011
self.enabled = False
1012
if not quiet:
1013
self.send_changedstate()
1014
# Do not run this again if called by a GLib.timeout_add
1015
return False
1016
1017
def __del__(self):
1018
self.disable()
1019
1020
def init_checker(self):
352
1021
# Schedule a new checker to be started an 'interval' from now,
353
1022
# and every interval from then on.
354
self.checker_initiator_tag = (gobject.timeout_add
355
(self.interval_milliseconds(),
356
self.start_checker))
1023
if self.checker_initiator_tag is not None:
1024
GLib.source_remove(self.checker_initiator_tag)
1025
self.checker_initiator_tag = GLib.timeout_add(
1026
int(self.interval.total_seconds() * 1000),
1027
self.start_checker)
357
1028
# Schedule a disable() when 'timeout' has passed
358
self.disable_initiator_tag = (gobject.timeout_add
359
(self.timeout_milliseconds(),
360
self.disable))
361
self.enabled = True
1029
if self.disable_initiator_tag is not None:
1030
GLib.source_remove(self.disable_initiator_tag)
1031
self.disable_initiator_tag = GLib.timeout_add(
1032
int(self.timeout.total_seconds() * 1000), self.disable)
362
1033
# Also start a new checker *right now*.
363
1034
self.start_checker()
364
365
def disable(self, quiet=True):
366
"""Disable this client."""
367
if not getattr(self, "enabled", False):
368
return False
369
if not quiet:
370
self.send_changedstate()
371
if not quiet:
372
logger.info(u"Disabling client %s", self.name)
373
if getattr(self, u"disable_initiator_tag", False):
374
gobject.source_remove(self.disable_initiator_tag)
375
self.disable_initiator_tag = None
376
if getattr(self, u"checker_initiator_tag", False):
377
gobject.source_remove(self.checker_initiator_tag)
378
self.checker_initiator_tag = None
379
self.stop_checker()
380
if self.disable_hook:
381
self.disable_hook(self)
382
self.enabled = False
383
# Do not run this again if called by a gobject.timeout_add
384
return False
385
386
def __del__(self):
387
self.disable_hook = None
388
self.disable()
389
390
def checker_callback(self, pid, condition, command):
1035
1036
def checker_callback(self, source, condition, connection,
1037
command):
391
1038
"""The checker has completed, so take appropriate actions."""
1039
# Read return code from connection (see call_pipe)
1040
returncode = connection.recv()
1041
connection.close()
1042
self.checker.join()
392
1043
self.checker_callback_tag = None
393
1044
self.checker = None
394
if os.WIFEXITED(condition):
395
exitstatus = os.WEXITSTATUS(condition)
396
if exitstatus == 0:
397
logger.info(u"Checker for %(name)s succeeded",
1045
1046
if returncode >= 0:
1047
self.last_checker_status = returncode
1048
self.last_checker_signal = None
1049
if self.last_checker_status == 0:
1050
logger.info("Checker for %(name)s succeeded",
398
1051
vars(self))
399
1052
self.checked_ok()
400
1053
else:
401
logger.info(u"Checker for %(name)s failed",
402
vars(self))
1054
logger.info("Checker for %(name)s failed", vars(self))
403
1055
else:
404
logger.warning(u"Checker for %(name)s crashed?",
1056
self.last_checker_status = -1
1057
self.last_checker_signal = -returncode
1058
logger.warning("Checker for %(name)s crashed?",
405
1059
vars(self))
406
1060
return False
1061
407
1062
def checked_ok(self):
408
"""Bump up the timeout for this client.
409
410
This should only be called when the client has been seen,
411
alive and well.
412
"""
1063
"""Assert that the client has been seen, alive and well."""
413
1064
self.last_checked_ok = datetime.datetime.utcnow()
414
gobject.source_remove(self.disable_initiator_tag)
415
self.disable_initiator_tag = (gobject.timeout_add
416
(self.timeout_milliseconds(),
417
self.disable))
418
1065
self.last_checker_status = 0
1066
self.last_checker_signal = None
1067
self.bump_timeout()
1068
1069
def bump_timeout(self, timeout=None):
1070
"""Bump up the timeout for this client."""
1071
if timeout is None:
1072
timeout = self.timeout
1073
if self.disable_initiator_tag is not None:
1074
GLib.source_remove(self.disable_initiator_tag)
1075
self.disable_initiator_tag = None
1076
if getattr(self, "enabled", False):
1077
self.disable_initiator_tag = GLib.timeout_add(
1078
int(timeout.total_seconds() * 1000), self.disable)
1079
self.expires = datetime.datetime.utcnow() + timeout
1080
1081
def need_approval(self):
1082
self.last_approval_request = datetime.datetime.utcnow()
1083
419
1084
def start_checker(self):
420
1085
"""Start a new checker subprocess if one is not running.
421
1086
422
1087
If a checker already exists, leave it running and do
423
1088
nothing."""
424
1089
# The reason for not killing a running checker is that if we
425
# did that, then if a checker (for some reason) started
426
# running slowly and taking more than 'interval' time, the
427
# client would inevitably timeout, since no checker would get
428
# a chance to run to completion. If we instead leave running
1090
# did that, and if a checker (for some reason) started running
1091
# slowly and taking more than 'interval' time, then the client
1092
# would inevitably timeout, since no checker would get a
1093
# chance to run to completion. If we instead leave running
429
1094
# checkers alone, the checker would have to take more time
430
1095
# than 'timeout' for the client to be disabled, which is as it
431
1096
# should be.
432
433
# If a checker exists, make sure it is not a zombie
434
try:
435
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
436
except (AttributeError, OSError), error:
437
if (isinstance(error, OSError)
438
and error.errno != errno.ECHILD):
439
raise error
440
else:
441
if pid:
442
logger.warning(u"Checker was a zombie")
443
gobject.source_remove(self.checker_callback_tag)
444
self.checker_callback(pid, status,
445
self.current_checker_command)
1097
1098
if self.checker is not None and not self.checker.is_alive():
1099
logger.warning("Checker was not alive; joining")
1100
self.checker.join()
1101
self.checker = None
446
1102
# Start a new checker if needed
447
1103
if self.checker is None:
1104
# Escape attributes for the shell
1105
escaped_attrs = {
1106
attr: re.escape(str(getattr(self, attr)))
1107
for attr in self.runtime_expansions}
448
1108
try:
449
# In case checker_command has exactly one % operator
450
command = self.checker_command % self.host
451
except TypeError:
452
# Escape attributes for the shell
453
escaped_attrs = dict((key,
454
re.escape(unicode(str(val),
455
errors=
456
u'replace')))
457
for key, val in
458
vars(self).iteritems())
459
try:
460
command = self.checker_command % escaped_attrs
461
except TypeError, error:
462
logger.error(u'Could not format string "%s":'
463
u' %s', self.checker_command, error)
464
return True # Try again later
1109
command = self.checker_command % escaped_attrs
1110
except TypeError as error:
1111
logger.error('Could not format string "%s"',
1112
self.checker_command,
1113
exc_info=error)
1114
return True # Try again later
465
1115
self.current_checker_command = command
466
try:
467
logger.info(u"Starting checker %r for %s",
468
command, self.name)
469
# We don't need to redirect stdout and stderr, since
470
# in normal mode, that is already done by daemon(),
471
# and in debug mode we don't want to. (Stdin is
472
# always replaced by /dev/null.)
473
self.checker = subprocess.Popen(command,
474
close_fds=True,
475
shell=True, cwd=u"/")
476
self.checker_callback_tag = (gobject.child_watch_add
477
(self.checker.pid,
478
self.checker_callback,
479
data=command))
480
# The checker may have completed before the gobject
481
# watch was added. Check for this.
482
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
483
if pid:
484
gobject.source_remove(self.checker_callback_tag)
485
self.checker_callback(pid, status, command)
486
except OSError, error:
487
logger.error(u"Failed to start subprocess: %s",
488
error)
489
# Re-run this periodically if run by gobject.timeout_add
1116
logger.info("Starting checker %r for %s", command,
1117
self.name)
1118
# We don't need to redirect stdout and stderr, since
1119
# in normal mode, that is already done by daemon(),
1120
# and in debug mode we don't want to. (Stdin is
1121
# always replaced by /dev/null.)
1122
# The exception is when not debugging but nevertheless
1123
# running in the foreground; use the previously
1124
# created wnull.
1125
popen_args = {"close_fds": True,
1126
"shell": True,
1127
"cwd": "/"}
1128
if (not self.server_settings["debug"]
1129
and self.server_settings["foreground"]):
1130
popen_args.update({"stdout": wnull,
1131
"stderr": wnull})
1132
pipe = multiprocessing.Pipe(duplex=False)
1133
self.checker = multiprocessing.Process(
1134
target=call_pipe,
1135
args=(pipe[1], subprocess.call, command),
1136
kwargs=popen_args)
1137
self.checker.start()
1138
self.checker_callback_tag = GLib.io_add_watch(
1139
pipe[0].fileno(), GLib.IO_IN,
1140
self.checker_callback, pipe[0], command)
1141
# Re-run this periodically if run by GLib.timeout_add
490
1142
return True
491
1143
492
1144
def stop_checker(self):
493
1145
"""Force the checker process, if any, to stop."""
494
1146
if self.checker_callback_tag:
495
gobject.source_remove(self.checker_callback_tag)
1147
GLib.source_remove(self.checker_callback_tag)
496
1148
self.checker_callback_tag = None
497
if getattr(self, u"checker", None) is None:
1149
if getattr(self, "checker", None) is None:
498
1150
return
499
logger.debug(u"Stopping checker for %(name)s", vars(self))
500
try:
501
os.kill(self.checker.pid, signal.SIGTERM)
502
#time.sleep(0.5)
503
#if self.checker.poll() is None:
504
# os.kill(self.checker.pid, signal.SIGKILL)
505
except OSError, error:
506
if error.errno != errno.ESRCH: # No such process
507
raise
1151
logger.debug("Stopping checker for %(name)s", vars(self))
1152
self.checker.terminate()
508
1153
self.checker = None
509
1154
510
def dbus_service_property(dbus_interface, signature=u"v",
511
access=u"readwrite", byte_arrays=False):
1155
1156
def dbus_service_property(dbus_interface,
1157
signature="v",
1158
access="readwrite",
1159
byte_arrays=False):
512
1160
"""Decorators for marking methods of a DBusObjectWithProperties to
513
1161
become properties on the D-Bus.
514
1162
515
1163
The decorated method will be called with no arguments by "Get"
516
1164
and with one argument by "Set".
517
1165
518
1166
The parameters, where they are supported, are the same as
519
1167
dbus.service.method, except there is only "signature", since the
520
1168
type from Get() and the type sent to Set() is the same.
521
1169
"""
522
1170
# Encoding deeply encoded byte arrays is not supported yet by the
523
1171
# "Set" method, so we fail early here:
524
if byte_arrays and signature != u"ay":
525
raise ValueError(u"Byte arrays not supported for non-'ay'"
526
u" signature %r" % signature)
1172
if byte_arrays and signature != "ay":
1173
raise ValueError("Byte arrays not supported for non-'ay'"
1174
" signature {!r}".format(signature))
1175
527
1176
def decorator(func):
528
1177
func._dbus_is_property = True
529
1178
func._dbus_interface = dbus_interface
530
1179
func._dbus_signature = signature
531
1180
func._dbus_access = access
532
1181
func._dbus_name = func.__name__
533
if func._dbus_name.endswith(u"_dbus_property"):
1182
if func._dbus_name.endswith("_dbus_property"):
534
1183
func._dbus_name = func._dbus_name[:-14]
535
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
536
return func
1184
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1185
return func
1186
1187
return decorator
1188
1189
1190
def dbus_interface_annotations(dbus_interface):
1191
"""Decorator for marking functions returning interface annotations
1192
1193
Usage:
1194
1195
@dbus_interface_annotations("org.example.Interface")
1196
def _foo(self): # Function name does not matter
1197
return {"org.freedesktop.DBus.Deprecated": "true",
1198
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1199
"false"}
1200
"""
1201
1202
def decorator(func):
1203
func._dbus_is_interface = True
1204
func._dbus_interface = dbus_interface
1205
func._dbus_name = dbus_interface
1206
return func
1207
1208
return decorator
1209
1210
1211
def dbus_annotations(annotations):
1212
"""Decorator to annotate D-Bus methods, signals or properties
1213
Usage:
1214
1215
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1216
"org.freedesktop.DBus.Property."
1217
"EmitsChangedSignal": "false"})
1218
@dbus_service_property("org.example.Interface", signature="b",
1219
access="r")
1220
def Property_dbus_property(self):
1221
return dbus.Boolean(False)
1222
1223
See also the DBusObjectWithAnnotations class.
1224
"""
1225
1226
def decorator(func):
1227
func._dbus_annotations = annotations
1228
return func
1229
537
1230
return decorator
538
1231
539
1232
540
1233
class DBusPropertyException(dbus.exceptions.DBusException):
541
1234
"""A base class for D-Bus property-related exceptions
542
1235
"""
543
def __unicode__(self):
544
return unicode(str(self))
1236
pass
545
1237
546
1238
547
1239
class DBusPropertyAccessException(DBusPropertyException):
556
1248
pass
557
1249
558
1250
559
class DBusObjectWithProperties(dbus.service.Object):
1251
class DBusObjectWithAnnotations(dbus.service.Object):
1252
"""A D-Bus object with annotations.
1253
1254
Classes inheriting from this can use the dbus_annotations
1255
decorator to add annotations to methods or signals.
1256
"""
1257
1258
@staticmethod
1259
def _is_dbus_thing(thing):
1260
"""Returns a function testing if an attribute is a D-Bus thing
1261
1262
If called like _is_dbus_thing("method") it returns a function
1263
suitable for use as predicate to inspect.getmembers().
1264
"""
1265
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1266
False)
1267
1268
def _get_all_dbus_things(self, thing):
1269
"""Returns a generator of (name, attribute) pairs
1270
"""
1271
return ((getattr(athing.__get__(self), "_dbus_name", name),
1272
athing.__get__(self))
1273
for cls in self.__class__.__mro__
1274
for name, athing in
1275
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1276
1277
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1278
out_signature="s",
1279
path_keyword='object_path',
1280
connection_keyword='connection')
1281
def Introspect(self, object_path, connection):
1282
"""Overloading of standard D-Bus method.
1283
1284
Inserts annotation tags on methods and signals.
1285
"""
1286
xmlstring = dbus.service.Object.Introspect(self, object_path,
1287
connection)
1288
try:
1289
document = xml.dom.minidom.parseString(xmlstring)
1290
1291
for if_tag in document.getElementsByTagName("interface"):
1292
# Add annotation tags
1293
for typ in ("method", "signal"):
1294
for tag in if_tag.getElementsByTagName(typ):
1295
annots = dict()
1296
for name, prop in (self.
1297
_get_all_dbus_things(typ)):
1298
if (name == tag.getAttribute("name")
1299
and prop._dbus_interface
1300
== if_tag.getAttribute("name")):
1301
annots.update(getattr(
1302
prop, "_dbus_annotations", {}))
1303
for name, value in annots.items():
1304
ann_tag = document.createElement(
1305
"annotation")
1306
ann_tag.setAttribute("name", name)
1307
ann_tag.setAttribute("value", value)
1308
tag.appendChild(ann_tag)
1309
# Add interface annotation tags
1310
for annotation, value in dict(
1311
itertools.chain.from_iterable(
1312
annotations().items()
1313
for name, annotations
1314
in self._get_all_dbus_things("interface")
1315
if name == if_tag.getAttribute("name")
1316
)).items():
1317
ann_tag = document.createElement("annotation")
1318
ann_tag.setAttribute("name", annotation)
1319
ann_tag.setAttribute("value", value)
1320
if_tag.appendChild(ann_tag)
1321
# Fix argument name for the Introspect method itself
1322
if (if_tag.getAttribute("name")
1323
== dbus.INTROSPECTABLE_IFACE):
1324
for cn in if_tag.getElementsByTagName("method"):
1325
if cn.getAttribute("name") == "Introspect":
1326
for arg in cn.getElementsByTagName("arg"):
1327
if (arg.getAttribute("direction")
1328
== "out"):
1329
arg.setAttribute("name",
1330
"xml_data")
1331
xmlstring = document.toxml("utf-8")
1332
document.unlink()
1333
except (AttributeError, xml.dom.DOMException,
1334
xml.parsers.expat.ExpatError) as error:
1335
logger.error("Failed to override Introspection method",
1336
exc_info=error)
1337
return xmlstring
1338
1339
1340
class DBusObjectWithProperties(DBusObjectWithAnnotations):
560
1341
"""A D-Bus object with properties.
561
1342
562
1343
Classes inheriting from this can use the dbus_service_property
563
1344
decorator to expose methods as D-Bus properties. It exposes the
564
1345
standard Get(), Set(), and GetAll() methods on the D-Bus.
565
1346
"""
566
567
@staticmethod
568
def _is_dbus_property(obj):
569
return getattr(obj, u"_dbus_is_property", False)
570
571
def _get_all_dbus_properties(self):
572
"""Returns a generator of (name, attribute) pairs
573
"""
574
return ((prop._dbus_name, prop)
575
for name, prop in
576
inspect.getmembers(self, self._is_dbus_property))
577
1347
578
1348
def _get_dbus_property(self, interface_name, property_name):
579
1349
"""Returns a bound method if one exists which is a D-Bus
580
1350
property with the specified name and interface.
581
1351
"""
582
for name in (property_name,
583
property_name + u"_dbus_property"):
584
prop = getattr(self, name, None)
585
if (prop is None
586
or not self._is_dbus_property(prop)
587
or prop._dbus_name != property_name
588
or (interface_name and prop._dbus_interface
589
and interface_name != prop._dbus_interface)):
590
continue
591
return prop
1352
for cls in self.__class__.__mro__:
1353
for name, value in inspect.getmembers(
1354
cls, self._is_dbus_thing("property")):
1355
if (value._dbus_name == property_name
1356
and value._dbus_interface == interface_name):
1357
return value.__get__(self)
1358
592
1359
# No such property
593
raise DBusPropertyNotFound(self.dbus_object_path + u":"
594
+ interface_name + u"."
595
+ property_name)
596
597
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
598
out_signature=u"v")
1360
raise DBusPropertyNotFound("{}:{}.{}".format(
1361
self.dbus_object_path, interface_name, property_name))
1362
1363
@classmethod
1364
def _get_all_interface_names(cls):
1365
"""Get a sequence of all interfaces supported by an object"""
1366
return (name for name in set(getattr(getattr(x, attr),
1367
"_dbus_interface", None)
1368
for x in (inspect.getmro(cls))
1369
for attr in dir(x))
1370
if name is not None)
1371
1372
@dbus.service.method(dbus.PROPERTIES_IFACE,
1373
in_signature="ss",
1374
out_signature="v")
599
1375
def Get(self, interface_name, property_name):
600
1376
"""Standard D-Bus property Get() method, see D-Bus standard.
601
1377
"""
602
1378
prop = self._get_dbus_property(interface_name, property_name)
603
if prop._dbus_access == u"write":
1379
if prop._dbus_access == "write":
604
1380
raise DBusPropertyAccessException(property_name)
605
1381
value = prop()
606
if not hasattr(value, u"variant_level"):
1382
if not hasattr(value, "variant_level"):
607
1383
return value
608
1384
return type(value)(value, variant_level=value.variant_level+1)
609
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1385
1386
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
611
1387
def Set(self, interface_name, property_name, value):
612
1388
"""Standard D-Bus property Set() method, see D-Bus standard.
613
1389
"""
614
1390
prop = self._get_dbus_property(interface_name, property_name)
615
if prop._dbus_access == u"read":
1391
if prop._dbus_access == "read":
616
1392
raise DBusPropertyAccessException(property_name)
617
if prop._dbus_get_args_options[u"byte_arrays"]:
1393
if prop._dbus_get_args_options["byte_arrays"]:
618
1394
# The byte_arrays option is not supported yet on
619
1395
# signatures other than "ay".
620
if prop._dbus_signature != u"ay":
621
raise ValueError
622
value = dbus.ByteArray(''.join(unichr(byte)
623
for byte in value))
1396
if prop._dbus_signature != "ay":
1397
raise ValueError("Byte arrays not supported for non-"
1398
"'ay' signature {!r}"
1399
.format(prop._dbus_signature))
1400
value = dbus.ByteArray(b''.join(chr(byte)
1401
for byte in value))
624
1402
prop(value)
625
626
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
627
out_signature=u"a{sv}")
1403
1404
@dbus.service.method(dbus.PROPERTIES_IFACE,
1405
in_signature="s",
1406
out_signature="a{sv}")
628
1407
def GetAll(self, interface_name):
629
1408
"""Standard D-Bus property GetAll() method, see D-Bus
630
1409
standard.
631
1410
632
1411
Note: Will not include properties with access="write".
633
1412
"""
634
all = {}
635
for name, prop in self._get_all_dbus_properties():
1413
properties = {}
1414
for name, prop in self._get_all_dbus_things("property"):
636
1415
if (interface_name
637
1416
and interface_name != prop._dbus_interface):
638
1417
# Interface non-empty but did not match
639
1418
continue
640
1419
# Ignore write-only properties
641
if prop._dbus_access == u"write":
1420
if prop._dbus_access == "write":
642
1421
continue
643
1422
value = prop()
644
if not hasattr(value, u"variant_level"):
645
all[name] = value
1423
if not hasattr(value, "variant_level"):
1424
properties[name] = value
646
1425
continue
647
all[name] = type(value)(value, variant_level=
648
value.variant_level+1)
649
return dbus.Dictionary(all, signature=u"sv")
650
1426
properties[name] = type(value)(
1427
value, variant_level=value.variant_level + 1)
1428
return dbus.Dictionary(properties, signature="sv")
1429
1430
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1431
def PropertiesChanged(self, interface_name, changed_properties,
1432
invalidated_properties):
1433
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1434
standard.
1435
"""
1436
pass
1437
651
1438
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
652
out_signature=u"s",
1439
out_signature="s",
653
1440
path_keyword='object_path',
654
1441
connection_keyword='connection')
655
1442
def Introspect(self, object_path, connection):
656
"""Standard D-Bus method, overloaded to insert property tags.
1443
"""Overloading of standard D-Bus method.
1444
1445
Inserts property tags and interface annotation tags.
657
1446
"""
658
xmlstring = dbus.service.Object.Introspect(self, object_path,
659
connection)
1447
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1448
object_path,
1449
connection)
660
1450
try:
661
1451
document = xml.dom.minidom.parseString(xmlstring)
1452
662
1453
def make_tag(document, name, prop):
663
e = document.createElement(u"property")
664
e.setAttribute(u"name", name)
665
e.setAttribute(u"type", prop._dbus_signature)
666
e.setAttribute(u"access", prop._dbus_access)
1454
e = document.createElement("property")
1455
e.setAttribute("name", name)
1456
e.setAttribute("type", prop._dbus_signature)
1457
e.setAttribute("access", prop._dbus_access)
667
1458
return e
668
for if_tag in document.getElementsByTagName(u"interface"):
1459
1460
for if_tag in document.getElementsByTagName("interface"):
1461
# Add property tags
669
1462
for tag in (make_tag(document, name, prop)
670
1463
for name, prop
671
in self._get_all_dbus_properties()
1464
in self._get_all_dbus_things("property")
672
1465
if prop._dbus_interface
673
== if_tag.getAttribute(u"name")):
1466
== if_tag.getAttribute("name")):
674
1467
if_tag.appendChild(tag)
1468
# Add annotation tags for properties
1469
for tag in if_tag.getElementsByTagName("property"):
1470
annots = dict()
1471
for name, prop in self._get_all_dbus_things(
1472
"property"):
1473
if (name == tag.getAttribute("name")
1474
and prop._dbus_interface
1475
== if_tag.getAttribute("name")):
1476
annots.update(getattr(
1477
prop, "_dbus_annotations", {}))
1478
for name, value in annots.items():
1479
ann_tag = document.createElement(
1480
"annotation")
1481
ann_tag.setAttribute("name", name)
1482
ann_tag.setAttribute("value", value)
1483
tag.appendChild(ann_tag)
675
1484
# Add the names to the return values for the
676
1485
# "org.freedesktop.DBus.Properties" methods
677
if (if_tag.getAttribute(u"name")
678
== u"org.freedesktop.DBus.Properties"):
679
for cn in if_tag.getElementsByTagName(u"method"):
680
if cn.getAttribute(u"name") == u"Get":
681
for arg in cn.getElementsByTagName(u"arg"):
682
if (arg.getAttribute(u"direction")
683
== u"out"):
684
arg.setAttribute(u"name", u"value")
685
elif cn.getAttribute(u"name") == u"GetAll":
686
for arg in cn.getElementsByTagName(u"arg"):
687
if (arg.getAttribute(u"direction")
688
== u"out"):
689
arg.setAttribute(u"name", u"props")
690
xmlstring = document.toxml(u"utf-8")
691
document.unlink()
692
except (AttributeError, xml.dom.DOMException,
693
xml.parsers.expat.ExpatError), error:
694
logger.error(u"Failed to override Introspection method",
695
error)
696
return xmlstring
697
698
1486
if (if_tag.getAttribute("name")
1487
== "org.freedesktop.DBus.Properties"):
1488
for cn in if_tag.getElementsByTagName("method"):
1489
if cn.getAttribute("name") == "Get":
1490
for arg in cn.getElementsByTagName("arg"):
1491
if (arg.getAttribute("direction")
1492
== "out"):
1493
arg.setAttribute("name", "value")
1494
elif cn.getAttribute("name") == "GetAll":
1495
for arg in cn.getElementsByTagName("arg"):
1496
if (arg.getAttribute("direction")
1497
== "out"):
1498
arg.setAttribute("name", "props")
1499
xmlstring = document.toxml("utf-8")
1500
document.unlink()
1501
except (AttributeError, xml.dom.DOMException,
1502
xml.parsers.expat.ExpatError) as error:
1503
logger.error("Failed to override Introspection method",
1504
exc_info=error)
1505
return xmlstring
1506
1507
1508
try:
1509
dbus.OBJECT_MANAGER_IFACE
1510
except AttributeError:
1511
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1512
1513
1514
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1515
"""A D-Bus object with an ObjectManager.
1516
1517
Classes inheriting from this exposes the standard
1518
GetManagedObjects call and the InterfacesAdded and
1519
InterfacesRemoved signals on the standard
1520
"org.freedesktop.DBus.ObjectManager" interface.
1521
1522
Note: No signals are sent automatically; they must be sent
1523
manually.
1524
"""
1525
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1526
out_signature="a{oa{sa{sv}}}")
1527
def GetManagedObjects(self):
1528
"""This function must be overridden"""
1529
raise NotImplementedError()
1530
1531
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1532
signature="oa{sa{sv}}")
1533
def InterfacesAdded(self, object_path, interfaces_and_properties):
1534
pass
1535
1536
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1537
def InterfacesRemoved(self, object_path, interfaces):
1538
pass
1539
1540
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1541
out_signature="s",
1542
path_keyword='object_path',
1543
connection_keyword='connection')
1544
def Introspect(self, object_path, connection):
1545
"""Overloading of standard D-Bus method.
1546
1547
Override return argument name of GetManagedObjects to be
1548
"objpath_interfaces_and_properties"
1549
"""
1550
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1551
object_path,
1552
connection)
1553
try:
1554
document = xml.dom.minidom.parseString(xmlstring)
1555
1556
for if_tag in document.getElementsByTagName("interface"):
1557
# Fix argument name for the GetManagedObjects method
1558
if (if_tag.getAttribute("name")
1559
== dbus.OBJECT_MANAGER_IFACE):
1560
for cn in if_tag.getElementsByTagName("method"):
1561
if (cn.getAttribute("name")
1562
== "GetManagedObjects"):
1563
for arg in cn.getElementsByTagName("arg"):
1564
if (arg.getAttribute("direction")
1565
== "out"):
1566
arg.setAttribute(
1567
"name",
1568
"objpath_interfaces"
1569
"_and_properties")
1570
xmlstring = document.toxml("utf-8")
1571
document.unlink()
1572
except (AttributeError, xml.dom.DOMException,
1573
xml.parsers.expat.ExpatError) as error:
1574
logger.error("Failed to override Introspection method",
1575
exc_info=error)
1576
return xmlstring
1577
1578
1579
def datetime_to_dbus(dt, variant_level=0):
1580
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1581
if dt is None:
1582
return dbus.String("", variant_level=variant_level)
1583
return dbus.String(dt.isoformat(), variant_level=variant_level)
1584
1585
1586
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1587
"""A class decorator; applied to a subclass of
1588
dbus.service.Object, it will add alternate D-Bus attributes with
1589
interface names according to the "alt_interface_names" mapping.
1590
Usage:
1591
1592
@alternate_dbus_interfaces({"org.example.Interface":
1593
"net.example.AlternateInterface"})
1594
class SampleDBusObject(dbus.service.Object):
1595
@dbus.service.method("org.example.Interface")
1596
def SampleDBusMethod():
1597
pass
1598
1599
The above "SampleDBusMethod" on "SampleDBusObject" will be
1600
reachable via two interfaces: "org.example.Interface" and
1601
"net.example.AlternateInterface", the latter of which will have
1602
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1603
"true", unless "deprecate" is passed with a False value.
1604
1605
This works for methods and signals, and also for D-Bus properties
1606
(from DBusObjectWithProperties) and interfaces (from the
1607
dbus_interface_annotations decorator).
1608
"""
1609
1610
def wrapper(cls):
1611
for orig_interface_name, alt_interface_name in (
1612
alt_interface_names.items()):
1613
attr = {}
1614
interface_names = set()
1615
# Go though all attributes of the class
1616
for attrname, attribute in inspect.getmembers(cls):
1617
# Ignore non-D-Bus attributes, and D-Bus attributes
1618
# with the wrong interface name
1619
if (not hasattr(attribute, "_dbus_interface")
1620
or not attribute._dbus_interface.startswith(
1621
orig_interface_name)):
1622
continue
1623
# Create an alternate D-Bus interface name based on
1624
# the current name
1625
alt_interface = attribute._dbus_interface.replace(
1626
orig_interface_name, alt_interface_name)
1627
interface_names.add(alt_interface)
1628
# Is this a D-Bus signal?
1629
if getattr(attribute, "_dbus_is_signal", False):
1630
# Extract the original non-method undecorated
1631
# function by black magic
1632
if sys.version_info.major == 2:
1633
nonmethod_func = (dict(
1634
zip(attribute.func_code.co_freevars,
1635
attribute.__closure__))
1636
["func"].cell_contents)
1637
else:
1638
nonmethod_func = (dict(
1639
zip(attribute.__code__.co_freevars,
1640
attribute.__closure__))
1641
["func"].cell_contents)
1642
# Create a new, but exactly alike, function
1643
# object, and decorate it to be a new D-Bus signal
1644
# with the alternate D-Bus interface name
1645
new_function = copy_function(nonmethod_func)
1646
new_function = (dbus.service.signal(
1647
alt_interface,
1648
attribute._dbus_signature)(new_function))
1649
# Copy annotations, if any
1650
try:
1651
new_function._dbus_annotations = dict(
1652
attribute._dbus_annotations)
1653
except AttributeError:
1654
pass
1655
1656
# Define a creator of a function to call both the
1657
# original and alternate functions, so both the
1658
# original and alternate signals gets sent when
1659
# the function is called
1660
def fixscope(func1, func2):
1661
"""This function is a scope container to pass
1662
func1 and func2 to the "call_both" function
1663
outside of its arguments"""
1664
1665
@functools.wraps(func2)
1666
def call_both(*args, **kwargs):
1667
"""This function will emit two D-Bus
1668
signals by calling func1 and func2"""
1669
func1(*args, **kwargs)
1670
func2(*args, **kwargs)
1671
# Make wrapper function look like a D-Bus
1672
# signal
1673
for name, attr in inspect.getmembers(func2):
1674
if name.startswith("_dbus_"):
1675
setattr(call_both, name, attr)
1676
1677
return call_both
1678
# Create the "call_both" function and add it to
1679
# the class
1680
attr[attrname] = fixscope(attribute, new_function)
1681
# Is this a D-Bus method?
1682
elif getattr(attribute, "_dbus_is_method", False):
1683
# Create a new, but exactly alike, function
1684
# object. Decorate it to be a new D-Bus method
1685
# with the alternate D-Bus interface name. Add it
1686
# to the class.
1687
attr[attrname] = (
1688
dbus.service.method(
1689
alt_interface,
1690
attribute._dbus_in_signature,
1691
attribute._dbus_out_signature)
1692
(copy_function(attribute)))
1693
# Copy annotations, if any
1694
try:
1695
attr[attrname]._dbus_annotations = dict(
1696
attribute._dbus_annotations)
1697
except AttributeError:
1698
pass
1699
# Is this a D-Bus property?
1700
elif getattr(attribute, "_dbus_is_property", False):
1701
# Create a new, but exactly alike, function
1702
# object, and decorate it to be a new D-Bus
1703
# property with the alternate D-Bus interface
1704
# name. Add it to the class.
1705
attr[attrname] = (dbus_service_property(
1706
alt_interface, attribute._dbus_signature,
1707
attribute._dbus_access,
1708
attribute._dbus_get_args_options
1709
["byte_arrays"])
1710
(copy_function(attribute)))
1711
# Copy annotations, if any
1712
try:
1713
attr[attrname]._dbus_annotations = dict(
1714
attribute._dbus_annotations)
1715
except AttributeError:
1716
pass
1717
# Is this a D-Bus interface?
1718
elif getattr(attribute, "_dbus_is_interface", False):
1719
# Create a new, but exactly alike, function
1720
# object. Decorate it to be a new D-Bus interface
1721
# with the alternate D-Bus interface name. Add it
1722
# to the class.
1723
attr[attrname] = (
1724
dbus_interface_annotations(alt_interface)
1725
(copy_function(attribute)))
1726
if deprecate:
1727
# Deprecate all alternate interfaces
1728
iname = "_AlternateDBusNames_interface_annotation{}"
1729
for interface_name in interface_names:
1730
1731
@dbus_interface_annotations(interface_name)
1732
def func(self):
1733
return {"org.freedesktop.DBus.Deprecated":
1734
"true"}
1735
# Find an unused name
1736
for aname in (iname.format(i)
1737
for i in itertools.count()):
1738
if aname not in attr:
1739
attr[aname] = func
1740
break
1741
if interface_names:
1742
# Replace the class with a new subclass of it with
1743
# methods, signals, etc. as created above.
1744
if sys.version_info.major == 2:
1745
cls = type(b"{}Alternate".format(cls.__name__),
1746
(cls, ), attr)
1747
else:
1748
cls = type("{}Alternate".format(cls.__name__),
1749
(cls, ), attr)
1750
return cls
1751
1752
return wrapper
1753
1754
1755
@alternate_dbus_interfaces({"se.recompile.Mandos":
1756
"se.bsnet.fukt.Mandos"})
699
1757
class ClientDBus(Client, DBusObjectWithProperties):
700
1758
"""A Client class using D-Bus
701
1759
702
1760
Attributes:
703
1761
dbus_object_path: dbus.ObjectPath
704
1762
bus: dbus.SystemBus()
705
1763
"""
1764
1765
runtime_expansions = (Client.runtime_expansions
1766
+ ("dbus_object_path", ))
1767
1768
_interface = "se.recompile.Mandos.Client"
1769
706
1770
# dbus.service.Object doesn't use super(), so we can't either.
707
708
def __init__(self, bus = None, *args, **kwargs):
709
self._approvals_pending = 0
1771
1772
def __init__(self, bus=None, *args, **kwargs):
710
1773
self.bus = bus
711
1774
Client.__init__(self, *args, **kwargs)
712
1775
# Only now, when this client is initialized, can it show up on
713
1776
# the D-Bus
714
self.dbus_object_path = (dbus.ObjectPath
715
(u"/clients/"
716
+ self.name.replace(u".", u"_")))
1777
client_object_name = str(self.name).translate(
1778
{ord("."): ord("_"),
1779
ord("-"): ord("_")})
1780
self.dbus_object_path = dbus.ObjectPath(
1781
"/clients/" + client_object_name)
717
1782
DBusObjectWithProperties.__init__(self, self.bus,
718
1783
self.dbus_object_path)
719
720
def _get_approvals_pending(self):
721
return self._approvals_pending
722
def _set_approvals_pending(self, value):
723
old_value = self._approvals_pending
724
self._approvals_pending = value
725
bval = bool(value)
726
if (hasattr(self, "dbus_object_path")
727
and bval is not bool(old_value)):
728
dbus_bool = dbus.Boolean(bval, variant_level=1)
729
self.PropertyChanged(dbus.String(u"ApprovalPending"),
730
dbus_bool)
731
732
approvals_pending = property(_get_approvals_pending,
733
_set_approvals_pending)
734
del _get_approvals_pending, _set_approvals_pending
735
736
@staticmethod
737
def _datetime_to_dbus(dt, variant_level=0):
738
"""Convert a UTC datetime.datetime() to a D-Bus type."""
739
return dbus.String(dt.isoformat(),
740
variant_level=variant_level)
741
742
def enable(self):
743
oldstate = getattr(self, u"enabled", False)
744
r = Client.enable(self)
745
if oldstate != self.enabled:
746
# Emit D-Bus signals
747
self.PropertyChanged(dbus.String(u"Enabled"),
748
dbus.Boolean(True, variant_level=1))
749
self.PropertyChanged(
750
dbus.String(u"LastEnabled"),
751
self._datetime_to_dbus(self.last_enabled,
752
variant_level=1))
753
return r
754
755
def disable(self, quiet = False):
756
oldstate = getattr(self, u"enabled", False)
757
r = Client.disable(self, quiet=quiet)
758
if not quiet and oldstate != self.enabled:
759
# Emit D-Bus signal
760
self.PropertyChanged(dbus.String(u"Enabled"),
761
dbus.Boolean(False, variant_level=1))
762
return r
763
1784
1785
def notifychangeproperty(transform_func, dbus_name,
1786
type_func=lambda x: x,
1787
variant_level=1,
1788
invalidate_only=False,
1789
_interface=_interface):
1790
""" Modify a variable so that it's a property which announces
1791
its changes to DBus.
1792
1793
transform_fun: Function that takes a value and a variant_level
1794
and transforms it to a D-Bus type.
1795
dbus_name: D-Bus name of the variable
1796
type_func: Function that transform the value before sending it
1797
to the D-Bus. Default: no transform
1798
variant_level: D-Bus variant level. Default: 1
1799
"""
1800
attrname = "_{}".format(dbus_name)
1801
1802
def setter(self, value):
1803
if hasattr(self, "dbus_object_path"):
1804
if (not hasattr(self, attrname) or
1805
type_func(getattr(self, attrname, None))
1806
!= type_func(value)):
1807
if invalidate_only:
1808
self.PropertiesChanged(
1809
_interface, dbus.Dictionary(),
1810
dbus.Array((dbus_name, )))
1811
else:
1812
dbus_value = transform_func(
1813
type_func(value),
1814
variant_level=variant_level)
1815
self.PropertyChanged(dbus.String(dbus_name),
1816
dbus_value)
1817
self.PropertiesChanged(
1818
_interface,
1819
dbus.Dictionary({dbus.String(dbus_name):
1820
dbus_value}),
1821
dbus.Array())
1822
setattr(self, attrname, value)
1823
1824
return property(lambda self: getattr(self, attrname), setter)
1825
1826
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1827
approvals_pending = notifychangeproperty(dbus.Boolean,
1828
"ApprovalPending",
1829
type_func=bool)
1830
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1831
last_enabled = notifychangeproperty(datetime_to_dbus,
1832
"LastEnabled")
1833
checker = notifychangeproperty(
1834
dbus.Boolean, "CheckerRunning",
1835
type_func=lambda checker: checker is not None)
1836
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1837
"LastCheckedOK")
1838
last_checker_status = notifychangeproperty(dbus.Int16,
1839
"LastCheckerStatus")
1840
last_approval_request = notifychangeproperty(
1841
datetime_to_dbus, "LastApprovalRequest")
1842
approved_by_default = notifychangeproperty(dbus.Boolean,
1843
"ApprovedByDefault")
1844
approval_delay = notifychangeproperty(
1845
dbus.UInt64, "ApprovalDelay",
1846
type_func=lambda td: td.total_seconds() * 1000)
1847
approval_duration = notifychangeproperty(
1848
dbus.UInt64, "ApprovalDuration",
1849
type_func=lambda td: td.total_seconds() * 1000)
1850
host = notifychangeproperty(dbus.String, "Host")
1851
timeout = notifychangeproperty(
1852
dbus.UInt64, "Timeout",
1853
type_func=lambda td: td.total_seconds() * 1000)
1854
extended_timeout = notifychangeproperty(
1855
dbus.UInt64, "ExtendedTimeout",
1856
type_func=lambda td: td.total_seconds() * 1000)
1857
interval = notifychangeproperty(
1858
dbus.UInt64, "Interval",
1859
type_func=lambda td: td.total_seconds() * 1000)
1860
checker_command = notifychangeproperty(dbus.String, "Checker")
1861
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1862
invalidate_only=True)
1863
1864
del notifychangeproperty
1865
764
1866
def __del__(self, *args, **kwargs):
765
1867
try:
766
1868
self.remove_from_connection()
767
1869
except LookupError:
768
1870
pass
769
if hasattr(DBusObjectWithProperties, u"__del__"):
1871
if hasattr(DBusObjectWithProperties, "__del__"):
770
1872
DBusObjectWithProperties.__del__(self, *args, **kwargs)
771
1873
Client.__del__(self, *args, **kwargs)
772
773
def checker_callback(self, pid, condition, command,
774
*args, **kwargs):
775
self.checker_callback_tag = None
776
self.checker = None
777
# Emit D-Bus signal
778
self.PropertyChanged(dbus.String(u"CheckerRunning"),
779
dbus.Boolean(False, variant_level=1))
780
if os.WIFEXITED(condition):
781
exitstatus = os.WEXITSTATUS(condition)
1874
1875
def checker_callback(self, source, condition,
1876
connection, command, *args, **kwargs):
1877
ret = Client.checker_callback(self, source, condition,
1878
connection, command, *args,
1879
**kwargs)
1880
exitstatus = self.last_checker_status
1881
if exitstatus >= 0:
782
1882
# Emit D-Bus signal
783
1883
self.CheckerCompleted(dbus.Int16(exitstatus),
784
dbus.Int64(condition),
1884
# This is specific to GNU libC
1885
dbus.Int64(exitstatus << 8),
785
1886
dbus.String(command))
786
1887
else:
787
1888
# Emit D-Bus signal
788
1889
self.CheckerCompleted(dbus.Int16(-1),
789
dbus.Int64(condition),
1890
dbus.Int64(
1891
# This is specific to GNU libC
1892
(exitstatus << 8)
1893
| self.last_checker_signal),
790
1894
dbus.String(command))
791
792
return Client.checker_callback(self, pid, condition, command,
793
*args, **kwargs)
794
795
def checked_ok(self, *args, **kwargs):
796
r = Client.checked_ok(self, *args, **kwargs)
797
# Emit D-Bus signal
798
self.PropertyChanged(
799
dbus.String(u"LastCheckedOK"),
800
(self._datetime_to_dbus(self.last_checked_ok,
801
variant_level=1)))
802
return r
803
1895
return ret
1896
804
1897
def start_checker(self, *args, **kwargs):
805
old_checker = self.checker
806
if self.checker is not None:
807
old_checker_pid = self.checker.pid
808
else:
809
old_checker_pid = None
1898
old_checker_pid = getattr(self.checker, "pid", None)
810
1899
r = Client.start_checker(self, *args, **kwargs)
811
1900
# Only if new checker process was started
812
1901
if (self.checker is not None
813
1902
and old_checker_pid != self.checker.pid):
814
1903
# Emit D-Bus signal
815
1904
self.CheckerStarted(self.current_checker_command)
816
self.PropertyChanged(
817
dbus.String(u"CheckerRunning"),
818
dbus.Boolean(True, variant_level=1))
819
return r
820
821
def stop_checker(self, *args, **kwargs):
822
old_checker = getattr(self, u"checker", None)
823
r = Client.stop_checker(self, *args, **kwargs)
824
if (old_checker is not None
825
and getattr(self, u"checker", None) is None):
826
self.PropertyChanged(dbus.String(u"CheckerRunning"),
827
dbus.Boolean(False, variant_level=1))
828
1905
return r
829
1906
830
1907
def _reset_approved(self):
831
self._approved = None
1908
self.approved = None
832
1909
return False
833
1910
834
1911
def approve(self, value=True):
1912
self.approved = value
1913
GLib.timeout_add(int(self.approval_duration.total_seconds()
1914
* 1000), self._reset_approved)
835
1915
self.send_changedstate()
836
self._approved = value
837
gobject.timeout_add(self._timedelta_to_milliseconds
838
(self.approval_duration),
839
self._reset_approved)
840
841
842
## D-Bus methods, signals & properties
843
_interface = u"se.bsnet.fukt.Mandos.Client"
844
845
## Signals
846
1916
1917
# D-Bus methods, signals & properties
1918
1919
# Interfaces
1920
1921
# Signals
1922
847
1923
# CheckerCompleted - signal
848
@dbus.service.signal(_interface, signature=u"nxs")
1924
@dbus.service.signal(_interface, signature="nxs")
849
1925
def CheckerCompleted(self, exitcode, waitstatus, command):
850
1926
"D-Bus signal"
851
1927
pass
852
1928
853
1929
# CheckerStarted - signal
854
@dbus.service.signal(_interface, signature=u"s")
1930
@dbus.service.signal(_interface, signature="s")
855
1931
def CheckerStarted(self, command):
856
1932
"D-Bus signal"
857
1933
pass
858
1934
859
1935
# PropertyChanged - signal
860
@dbus.service.signal(_interface, signature=u"sv")
1936
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1937
@dbus.service.signal(_interface, signature="sv")
861
1938
def PropertyChanged(self, property, value):
862
1939
"D-Bus signal"
863
1940
pass
864
1941
865
1942
# GotSecret - signal
866
1943
@dbus.service.signal(_interface)
867
1944
def GotSecret(self):
870
1947
server to mandos-client
871
1948
"""
872
1949
pass
873
1950
874
1951
# Rejected - signal
875
@dbus.service.signal(_interface, signature=u"s")
1952
@dbus.service.signal(_interface, signature="s")
876
1953
def Rejected(self, reason):
877
1954
"D-Bus signal"
878
1955
pass
879
1956
880
1957
# NeedApproval - signal
881
@dbus.service.signal(_interface, signature=u"tb")
1958
@dbus.service.signal(_interface, signature="tb")
882
1959
def NeedApproval(self, timeout, default):
883
1960
"D-Bus signal"
884
pass
885
886
## Methods
1961
return self.need_approval()
1962
1963
# Methods
887
1964
888
1965
# Approve - method
889
@dbus.service.method(_interface, in_signature=u"b")
1966
@dbus.service.method(_interface, in_signature="b")
890
1967
def Approve(self, value):
891
1968
self.approve(value)
892
1969
893
1970
# CheckedOK - method
894
1971
@dbus.service.method(_interface)
895
1972
def CheckedOK(self):
896
return self.checked_ok()
897
1973
self.checked_ok()
1974
898
1975
# Enable - method
1976
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
899
1977
@dbus.service.method(_interface)
900
1978
def Enable(self):
901
1979
"D-Bus method"
902
1980
self.enable()
903
1981
904
1982
# StartChecker - method
1983
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
905
1984
@dbus.service.method(_interface)
906
1985
def StartChecker(self):
907
1986
"D-Bus method"
908
1987
self.start_checker()
909
1988
910
1989
# Disable - method
1990
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
911
1991
@dbus.service.method(_interface)
912
1992
def Disable(self):
913
1993
"D-Bus method"
914
1994
self.disable()
915
1995
916
1996
# StopChecker - method
1997
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
917
1998
@dbus.service.method(_interface)
918
1999
def StopChecker(self):
919
2000
self.stop_checker()
920
921
## Properties
922
2001
2002
# Properties
2003
923
2004
# ApprovalPending - property
924
@dbus_service_property(_interface, signature=u"b", access=u"read")
2005
@dbus_service_property(_interface, signature="b", access="read")
925
2006
def ApprovalPending_dbus_property(self):
926
2007
return dbus.Boolean(bool(self.approvals_pending))
927
2008
928
2009
# ApprovedByDefault - property
929
@dbus_service_property(_interface, signature=u"b",
930
access=u"readwrite")
2010
@dbus_service_property(_interface,
2011
signature="b",
2012
access="readwrite")
931
2013
def ApprovedByDefault_dbus_property(self, value=None):
932
2014
if value is None: # get
933
2015
return dbus.Boolean(self.approved_by_default)
934
2016
self.approved_by_default = bool(value)
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
937
dbus.Boolean(value, variant_level=1))
938
2017
939
2018
# ApprovalDelay - property
940
@dbus_service_property(_interface, signature=u"t",
941
access=u"readwrite")
2019
@dbus_service_property(_interface,
2020
signature="t",
2021
access="readwrite")
942
2022
def ApprovalDelay_dbus_property(self, value=None):
943
2023
if value is None: # get
944
return dbus.UInt64(self.approval_delay_milliseconds())
2024
return dbus.UInt64(self.approval_delay.total_seconds()
2025
* 1000)
945
2026
self.approval_delay = datetime.timedelta(0, 0, 0, value)
946
# Emit D-Bus signal
947
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
948
dbus.UInt64(value, variant_level=1))
949
2027
950
2028
# ApprovalDuration - property
951
@dbus_service_property(_interface, signature=u"t",
952
access=u"readwrite")
2029
@dbus_service_property(_interface,
2030
signature="t",
2031
access="readwrite")
953
2032
def ApprovalDuration_dbus_property(self, value=None):
954
2033
if value is None: # get
955
return dbus.UInt64(self._timedelta_to_milliseconds(
956
self.approval_duration))
2034
return dbus.UInt64(self.approval_duration.total_seconds()
2035
* 1000)
957
2036
self.approval_duration = datetime.timedelta(0, 0, 0, value)
958
# Emit D-Bus signal
959
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
960
dbus.UInt64(value, variant_level=1))
961
2037
962
2038
# Name - property
963
@dbus_service_property(_interface, signature=u"s", access=u"read")
2039
@dbus_annotations(
2040
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2041
@dbus_service_property(_interface, signature="s", access="read")
964
2042
def Name_dbus_property(self):
965
2043
return dbus.String(self.name)
966
2044
2045
# KeyID - property
2046
@dbus_annotations(
2047
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2048
@dbus_service_property(_interface, signature="s", access="read")
2049
def KeyID_dbus_property(self):
2050
return dbus.String(self.key_id)
2051
967
2052
# Fingerprint - property
968
@dbus_service_property(_interface, signature=u"s", access=u"read")
2053
@dbus_annotations(
2054
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2055
@dbus_service_property(_interface, signature="s", access="read")
969
2056
def Fingerprint_dbus_property(self):
970
2057
return dbus.String(self.fingerprint)
971
2058
972
2059
# Host - property
973
@dbus_service_property(_interface, signature=u"s",
974
access=u"readwrite")
2060
@dbus_service_property(_interface,
2061
signature="s",
2062
access="readwrite")
975
2063
def Host_dbus_property(self, value=None):
976
2064
if value is None: # get
977
2065
return dbus.String(self.host)
978
self.host = value
979
# Emit D-Bus signal
980
self.PropertyChanged(dbus.String(u"Host"),
981
dbus.String(value, variant_level=1))
982
2066
self.host = str(value)
2067
983
2068
# Created - property
984
@dbus_service_property(_interface, signature=u"s", access=u"read")
2069
@dbus_annotations(
2070
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2071
@dbus_service_property(_interface, signature="s", access="read")
985
2072
def Created_dbus_property(self):
986
return dbus.String(self._datetime_to_dbus(self.created))
987
2073
return datetime_to_dbus(self.created)
2074
988
2075
# LastEnabled - property
989
@dbus_service_property(_interface, signature=u"s", access=u"read")
2076
@dbus_service_property(_interface, signature="s", access="read")
990
2077
def LastEnabled_dbus_property(self):
991
if self.last_enabled is None:
992
return dbus.String(u"")
993
return dbus.String(self._datetime_to_dbus(self.last_enabled))
994
2078
return datetime_to_dbus(self.last_enabled)
2079
995
2080
# Enabled - property
996
@dbus_service_property(_interface, signature=u"b",
997
access=u"readwrite")
2081
@dbus_service_property(_interface,
2082
signature="b",
2083
access="readwrite")
998
2084
def Enabled_dbus_property(self, value=None):
999
2085
if value is None: # get
1000
2086
return dbus.Boolean(self.enabled)
1002
2088
self.enable()
1003
2089
else:
1004
2090
self.disable()
1005
2091
1006
2092
# LastCheckedOK - property
1007
@dbus_service_property(_interface, signature=u"s",
1008
access=u"readwrite")
2093
@dbus_service_property(_interface,
2094
signature="s",
2095
access="readwrite")
1009
2096
def LastCheckedOK_dbus_property(self, value=None):
1010
2097
if value is not None:
1011
2098
self.checked_ok()
1012
2099
return
1013
if self.last_checked_ok is None:
1014
return dbus.String(u"")
1015
return dbus.String(self._datetime_to_dbus(self
1016
.last_checked_ok))
1017
2100
return datetime_to_dbus(self.last_checked_ok)
2101
2102
# LastCheckerStatus - property
2103
@dbus_service_property(_interface, signature="n", access="read")
2104
def LastCheckerStatus_dbus_property(self):
2105
return dbus.Int16(self.last_checker_status)
2106
2107
# Expires - property
2108
@dbus_service_property(_interface, signature="s", access="read")
2109
def Expires_dbus_property(self):
2110
return datetime_to_dbus(self.expires)
2111
2112
# LastApprovalRequest - property
2113
@dbus_service_property(_interface, signature="s", access="read")
2114
def LastApprovalRequest_dbus_property(self):
2115
return datetime_to_dbus(self.last_approval_request)
2116
1018
2117
# Timeout - property
1019
@dbus_service_property(_interface, signature=u"t",
1020
access=u"readwrite")
2118
@dbus_service_property(_interface,
2119
signature="t",
2120
access="readwrite")
1021
2121
def Timeout_dbus_property(self, value=None):
1022
2122
if value is None: # get
1023
return dbus.UInt64(self.timeout_milliseconds())
2123
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2124
old_timeout = self.timeout
1024
2125
self.timeout = datetime.timedelta(0, 0, 0, value)
1025
# Emit D-Bus signal
1026
self.PropertyChanged(dbus.String(u"Timeout"),
1027
dbus.UInt64(value, variant_level=1))
1028
if getattr(self, u"disable_initiator_tag", None) is None:
1029
return
1030
# Reschedule timeout
1031
gobject.source_remove(self.disable_initiator_tag)
1032
self.disable_initiator_tag = None
1033
time_to_die = (self.
1034
_timedelta_to_milliseconds((self
1035
.last_checked_ok
1036
+ self.timeout)
1037
- datetime.datetime
1038
.utcnow()))
1039
if time_to_die <= 0:
1040
# The timeout has passed
1041
self.disable()
1042
else:
1043
self.disable_initiator_tag = (gobject.timeout_add
1044
(time_to_die, self.disable))
1045
2126
# Reschedule disabling
2127
if self.enabled:
2128
now = datetime.datetime.utcnow()
2129
self.expires += self.timeout - old_timeout
2130
if self.expires <= now:
2131
# The timeout has passed
2132
self.disable()
2133
else:
2134
if (getattr(self, "disable_initiator_tag", None)
2135
is None):
2136
return
2137
GLib.source_remove(self.disable_initiator_tag)
2138
self.disable_initiator_tag = GLib.timeout_add(
2139
int((self.expires - now).total_seconds() * 1000),
2140
self.disable)
2141
2142
# ExtendedTimeout - property
2143
@dbus_service_property(_interface,
2144
signature="t",
2145
access="readwrite")
2146
def ExtendedTimeout_dbus_property(self, value=None):
2147
if value is None: # get
2148
return dbus.UInt64(self.extended_timeout.total_seconds()
2149
* 1000)
2150
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2151
1046
2152
# Interval - property
1047
@dbus_service_property(_interface, signature=u"t",
1048
access=u"readwrite")
2153
@dbus_service_property(_interface,
2154
signature="t",
2155
access="readwrite")
1049
2156
def Interval_dbus_property(self, value=None):
1050
2157
if value is None: # get
1051
return dbus.UInt64(self.interval_milliseconds())
2158
return dbus.UInt64(self.interval.total_seconds() * 1000)
1052
2159
self.interval = datetime.timedelta(0, 0, 0, value)
1053
# Emit D-Bus signal
1054
self.PropertyChanged(dbus.String(u"Interval"),
1055
dbus.UInt64(value, variant_level=1))
1056
if getattr(self, u"checker_initiator_tag", None) is None:
2160
if getattr(self, "checker_initiator_tag", None) is None:
1057
2161
return
1058
# Reschedule checker run
1059
gobject.source_remove(self.checker_initiator_tag)
1060
self.checker_initiator_tag = (gobject.timeout_add
1061
(value, self.start_checker))
1062
self.start_checker() # Start one now, too
2162
if self.enabled:
2163
# Reschedule checker run
2164
GLib.source_remove(self.checker_initiator_tag)
2165
self.checker_initiator_tag = GLib.timeout_add(
2166
value, self.start_checker)
2167
self.start_checker() # Start one now, too
1063
2168
1064
2169
# Checker - property
1065
@dbus_service_property(_interface, signature=u"s",
1066
access=u"readwrite")
2170
@dbus_service_property(_interface,
2171
signature="s",
2172
access="readwrite")
1067
2173
def Checker_dbus_property(self, value=None):
1068
2174
if value is None: # get
1069
2175
return dbus.String(self.checker_command)
1070
self.checker_command = value
1071
# Emit D-Bus signal
1072
self.PropertyChanged(dbus.String(u"Checker"),
1073
dbus.String(self.checker_command,
1074
variant_level=1))
1075
2176
self.checker_command = str(value)
2177
1076
2178
# CheckerRunning - property
1077
@dbus_service_property(_interface, signature=u"b",
1078
access=u"readwrite")
2179
@dbus_service_property(_interface,
2180
signature="b",
2181
access="readwrite")
1079
2182
def CheckerRunning_dbus_property(self, value=None):
1080
2183
if value is None: # get
1081
2184
return dbus.Boolean(self.checker is not None)
1083
2186
self.start_checker()
1084
2187
else:
1085
2188
self.stop_checker()
1086
2189
1087
2190
# ObjectPath - property
1088
@dbus_service_property(_interface, signature=u"o", access=u"read")
2191
@dbus_annotations(
2192
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2193
"org.freedesktop.DBus.Deprecated": "true"})
2194
@dbus_service_property(_interface, signature="o", access="read")
1089
2195
def ObjectPath_dbus_property(self):
1090
return self.dbus_object_path # is already a dbus.ObjectPath
1091
2196
return self.dbus_object_path # is already a dbus.ObjectPath
2197
1092
2198
# Secret = property
1093
@dbus_service_property(_interface, signature=u"ay",
1094
access=u"write", byte_arrays=True)
2199
@dbus_annotations(
2200
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2201
"invalidates"})
2202
@dbus_service_property(_interface,
2203
signature="ay",
2204
access="write",
2205
byte_arrays=True)
1095
2206
def Secret_dbus_property(self, value):
1096
self.secret = str(value)
1097
2207
self.secret = bytes(value)
2208
1098
2209
del _interface
1099
2210
1100
2211
1101
2212
class ProxyClient(object):
1102
def __init__(self, child_pipe, fpr, address):
2213
def __init__(self, child_pipe, key_id, fpr, address):
1103
2214
self._pipe = child_pipe
1104
self._pipe.send(('init', fpr, address))
2215
self._pipe.send(('init', key_id, fpr, address))
1105
2216
if not self._pipe.recv():
1106
raise KeyError()
2217
raise KeyError(key_id or fpr)
1107
2218
1108
2219
def __getattribute__(self, name):
1109
if(name == '_pipe'):
2220
if name == '_pipe':
1110
2221
return super(ProxyClient, self).__getattribute__(name)
1111
2222
self._pipe.send(('getattr', name))
1112
2223
data = self._pipe.recv()
1113
2224
if data[0] == 'data':
1114
2225
return data[1]
1115
2226
if data[0] == 'function':
2227
1116
2228
def func(*args, **kwargs):
1117
2229
self._pipe.send(('funcall', name, args, kwargs))
1118
2230
return self._pipe.recv()[1]
2231
1119
2232
return func
1120
2233
1121
2234
def __setattr__(self, name, value):
1122
if(name == '_pipe'):
2235
if name == '_pipe':
1123
2236
return super(ProxyClient, self).__setattr__(name, value)
1124
2237
self._pipe.send(('setattr', name, value))
1125
2238
1126
2239
1127
2240
class ClientHandler(socketserver.BaseRequestHandler, object):
1128
2241
"""A class to handle client connections.
1129
2242
1130
2243
Instantiated once for each connection to handle it.
1131
2244
Note: This will run in its own forked process."""
1132
2245
1133
2246
def handle(self):
1134
2247
with contextlib.closing(self.server.child_pipe) as child_pipe:
1135
logger.info(u"TCP connection from: %s",
1136
unicode(self.client_address))
1137
logger.debug(u"Pipe FD: %d",
2248
logger.info("TCP connection from: %s",
2249
str(self.client_address))
2250
logger.debug("Pipe FD: %d",
1138
2251
self.server.child_pipe.fileno())
1139
2252
1140
session = (gnutls.connection
1141
.ClientSession(self.request,
1142
gnutls.connection
1143
.X509Credentials()))
1144
1145
# Note: gnutls.connection.X509Credentials is really a
1146
# generic GnuTLS certificate credentials object so long as
1147
# no X.509 keys are added to it. Therefore, we can use it
1148
# here despite using OpenPGP certificates.
1149
1150
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1151
# u"+AES-256-CBC", u"+SHA1",
1152
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1153
# u"+DHE-DSS"))
2253
session = gnutls.ClientSession(self.request)
2254
2255
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2256
# "+AES-256-CBC", "+SHA1",
2257
# "+COMP-NULL", "+CTYPE-OPENPGP",
2258
# "+DHE-DSS"))
1154
2259
# Use a fallback default, since this MUST be set.
1155
2260
priority = self.server.gnutls_priority
1156
2261
if priority is None:
1157
priority = u"NORMAL"
1158
(gnutls.library.functions
1159
.gnutls_priority_set_direct(session._c_object,
1160
priority, None))
2262
priority = "NORMAL"
2263
gnutls.priority_set_direct(session._c_object,
2264
priority.encode("utf-8"),
2265
None)
1161
2266
1162
2267
# Start communication using the Mandos protocol
1163
2268
# Get protocol number
1164
2269
line = self.request.makefile().readline()
1165
logger.debug(u"Protocol version: %r", line)
2270
logger.debug("Protocol version: %r", line)
1166
2271
try:
1167
2272
if int(line.strip().split()[0]) > 1:
1168
raise RuntimeError
1169
except (ValueError, IndexError, RuntimeError), error:
1170
logger.error(u"Unknown protocol version: %s", error)
2273
raise RuntimeError(line)
2274
except (ValueError, IndexError, RuntimeError) as error:
2275
logger.error("Unknown protocol version: %s", error)
1171
2276
return
1172
2277
1173
2278
# Start GnuTLS connection
1174
2279
try:
1175
2280
session.handshake()
1176
except gnutls.errors.GNUTLSError, error:
1177
logger.warning(u"Handshake failed: %s", error)
2281
except gnutls.Error as error:
2282
logger.warning("Handshake failed: %s", error)
1178
2283
# Do not run session.bye() here: the session is not
1179
2284
# established. Just abandon the request.
1180
2285
return
1181
logger.debug(u"Handshake succeeded")
2286
logger.debug("Handshake succeeded")
1182
2287
1183
2288
approval_required = False
1184
2289
try:
1185
try:
1186
fpr = self.fingerprint(self.peer_certificate
1187
(session))
1188
except (TypeError, gnutls.errors.GNUTLSError), error:
1189
logger.warning(u"Bad certificate: %s", error)
1190
return
1191
logger.debug(u"Fingerprint: %s", fpr)
1192
1193
try:
1194
client = ProxyClient(child_pipe, fpr,
2290
if gnutls.has_rawpk:
2291
fpr = b""
2292
try:
2293
key_id = self.key_id(
2294
self.peer_certificate(session))
2295
except (TypeError, gnutls.Error) as error:
2296
logger.warning("Bad certificate: %s", error)
2297
return
2298
logger.debug("Key ID: %s", key_id)
2299
2300
else:
2301
key_id = b""
2302
try:
2303
fpr = self.fingerprint(
2304
self.peer_certificate(session))
2305
except (TypeError, gnutls.Error) as error:
2306
logger.warning("Bad certificate: %s", error)
2307
return
2308
logger.debug("Fingerprint: %s", fpr)
2309
2310
try:
2311
client = ProxyClient(child_pipe, key_id, fpr,
1195
2312
self.client_address)
1196
2313
except KeyError:
1197
2314
return
1198
2315
1199
2316
if client.approval_delay:
1200
2317
delay = client.approval_delay
1201
2318
client.approvals_pending += 1
1202
2319
approval_required = True
1203
2320
1204
2321
while True:
1205
2322
if not client.enabled:
1206
logger.warning(u"Client %s is disabled",
1207
client.name)
2323
logger.info("Client %s is disabled",
2324
client.name)
1208
2325
if self.server.use_dbus:
1209
2326
# Emit D-Bus signal
1210
client.Rejected("Disabled")
2327
client.Rejected("Disabled")
1211
2328
return
1212
1213
if client._approved or not client.approval_delay:
1214
#We are approved or approval is disabled
2329
2330
if client.approved or not client.approval_delay:
2331
# We are approved or approval is disabled
1215
2332
break
1216
elif client._approved is None:
1217
logger.info(u"Client %s needs approval",
2333
elif client.approved is None:
2334
logger.info("Client %s needs approval",
1218
2335
client.name)
1219
2336
if self.server.use_dbus:
1220
2337
# Emit D-Bus signal
1221
2338
client.NeedApproval(
1222
client.approval_delay_milliseconds(),
1223
client.approved_by_default)
2339
client.approval_delay.total_seconds()
2340
* 1000, client.approved_by_default)
1224
2341
else:
1225
logger.warning(u"Client %s was not approved",
2342
logger.warning("Client %s was not approved",
1226
2343
client.name)
1227
2344
if self.server.use_dbus:
1228
2345
# Emit D-Bus signal
1229
2346
client.Rejected("Denied")
1230
2347
return
1231
1232
#wait until timeout or approved
1233
#x = float(client._timedelta_to_milliseconds(delay))
2348
2349
# wait until timeout or approved
1234
2350
time = datetime.datetime.now()
1235
2351
client.changedstate.acquire()
1236
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2352
client.changedstate.wait(delay.total_seconds())
1237
2353
client.changedstate.release()
1238
2354
time2 = datetime.datetime.now()
1239
2355
if (time2 - time) >= delay:
1243
2359
client.name)
1244
2360
if self.server.use_dbus:
1245
2361
# Emit D-Bus signal
1246
client.Rejected("Timed out")
2362
client.Rejected("Approval timed out")
1247
2363
return
1248
2364
else:
1249
2365
break
1250
2366
else:
1251
2367
delay -= time2 - time
1252
1253
sent_size = 0
1254
while sent_size < len(client.secret):
1255
try:
1256
sent = session.send(client.secret[sent_size:])
1257
except (gnutls.errors.GNUTLSError), error:
1258
logger.warning("gnutls send failed")
1259
return
1260
logger.debug(u"Sent: %d, remaining: %d",
1261
sent, len(client.secret)
1262
- (sent_size + sent))
1263
sent_size += sent
1264
1265
logger.info(u"Sending secret to %s", client.name)
1266
# bump the timeout as if seen
1267
client.checked_ok()
2368
2369
try:
2370
session.send(client.secret)
2371
except gnutls.Error as error:
2372
logger.warning("gnutls send failed",
2373
exc_info=error)
2374
return
2375
2376
logger.info("Sending secret to %s", client.name)
2377
# bump the timeout using extended_timeout
2378
client.bump_timeout(client.extended_timeout)
1268
2379
if self.server.use_dbus:
1269
2380
# Emit D-Bus signal
1270
2381
client.GotSecret()
1271
2382
1272
2383
finally:
1273
2384
if approval_required:
1274
2385
client.approvals_pending -= 1
1275
2386
try:
1276
2387
session.bye()
1277
except (gnutls.errors.GNUTLSError), error:
1278
logger.warning("GnuTLS bye failed")
1279
2388
except gnutls.Error as error:
2389
logger.warning("GnuTLS bye failed",
2390
exc_info=error)
2391
1280
2392
@staticmethod
1281
2393
def peer_certificate(session):
1282
"Return the peer's OpenPGP certificate as a bytestring"
1283
# If not an OpenPGP certificate...
1284
if (gnutls.library.functions
1285
.gnutls_certificate_type_get(session._c_object)
1286
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1287
# ...do the normal thing
1288
return session.peer_certificate
2394
"Return the peer's certificate as a bytestring"
2395
try:
2396
cert_type = gnutls.certificate_type_get2(session._c_object,
2397
gnutls.CTYPE_PEERS)
2398
except AttributeError:
2399
cert_type = gnutls.certificate_type_get(session._c_object)
2400
if gnutls.has_rawpk:
2401
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2402
else:
2403
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2404
# If not a valid certificate type...
2405
if cert_type not in valid_cert_types:
2406
logger.info("Cert type %r not in %r", cert_type,
2407
valid_cert_types)
2408
# ...return invalid data
2409
return b""
1289
2410
list_size = ctypes.c_uint(1)
1290
cert_list = (gnutls.library.functions
1291
.gnutls_certificate_get_peers
2411
cert_list = (gnutls.certificate_get_peers
1292
2412
(session._c_object, ctypes.byref(list_size)))
1293
2413
if not bool(cert_list) and list_size.value != 0:
1294
raise gnutls.errors.GNUTLSError(u"error getting peer"
1295
u" certificate")
2414
raise gnutls.Error("error getting peer certificate")
1296
2415
if list_size.value == 0:
1297
2416
return None
1298
2417
cert = cert_list[0]
1299
2418
return ctypes.string_at(cert.data, cert.size)
1300
2419
2420
@staticmethod
2421
def key_id(certificate):
2422
"Convert a certificate bytestring to a hexdigit key ID"
2423
# New GnuTLS "datum" with the public key
2424
datum = gnutls.datum_t(
2425
ctypes.cast(ctypes.c_char_p(certificate),
2426
ctypes.POINTER(ctypes.c_ubyte)),
2427
ctypes.c_uint(len(certificate)))
2428
# XXX all these need to be created in the gnutls "module"
2429
# New empty GnuTLS certificate
2430
pubkey = gnutls.pubkey_t()
2431
gnutls.pubkey_init(ctypes.byref(pubkey))
2432
# Import the raw public key into the certificate
2433
gnutls.pubkey_import(pubkey,
2434
ctypes.byref(datum),
2435
gnutls.X509_FMT_DER)
2436
# New buffer for the key ID
2437
buf = ctypes.create_string_buffer(32)
2438
buf_len = ctypes.c_size_t(len(buf))
2439
# Get the key ID from the raw public key into the buffer
2440
gnutls.pubkey_get_key_id(pubkey,
2441
gnutls.KEYID_USE_SHA256,
2442
ctypes.cast(ctypes.byref(buf),
2443
ctypes.POINTER(ctypes.c_ubyte)),
2444
ctypes.byref(buf_len))
2445
# Deinit the certificate
2446
gnutls.pubkey_deinit(pubkey)
2447
2448
# Convert the buffer to a Python bytestring
2449
key_id = ctypes.string_at(buf, buf_len.value)
2450
# Convert the bytestring to hexadecimal notation
2451
hex_key_id = binascii.hexlify(key_id).upper()
2452
return hex_key_id
2453
1301
2454
@staticmethod
1302
2455
def fingerprint(openpgp):
1303
2456
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1304
2457
# New GnuTLS "datum" with the OpenPGP public key
1305
datum = (gnutls.library.types
1306
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1307
ctypes.POINTER
1308
(ctypes.c_ubyte)),
1309
ctypes.c_uint(len(openpgp))))
2458
datum = gnutls.datum_t(
2459
ctypes.cast(ctypes.c_char_p(openpgp),
2460
ctypes.POINTER(ctypes.c_ubyte)),
2461
ctypes.c_uint(len(openpgp)))
1310
2462
# New empty GnuTLS certificate
1311
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1312
(gnutls.library.functions
1313
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2463
crt = gnutls.openpgp_crt_t()
2464
gnutls.openpgp_crt_init(ctypes.byref(crt))
1314
2465
# Import the OpenPGP public key into the certificate
1315
(gnutls.library.functions
1316
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1317
gnutls.library.constants
1318
.GNUTLS_OPENPGP_FMT_RAW))
2466
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2467
gnutls.OPENPGP_FMT_RAW)
1319
2468
# Verify the self signature in the key
1320
2469
crtverify = ctypes.c_uint()
1321
(gnutls.library.functions
1322
.gnutls_openpgp_crt_verify_self(crt, 0,
1323
ctypes.byref(crtverify)))
2470
gnutls.openpgp_crt_verify_self(crt, 0,
2471
ctypes.byref(crtverify))
1324
2472
if crtverify.value != 0:
1325
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1326
raise (gnutls.errors.CertificateSecurityError
1327
(u"Verify failed"))
2473
gnutls.openpgp_crt_deinit(crt)
2474
raise gnutls.CertificateSecurityError(code
2475
=crtverify.value)
1328
2476
# New buffer for the fingerprint
1329
2477
buf = ctypes.create_string_buffer(20)
1330
2478
buf_len = ctypes.c_size_t()
1331
2479
# Get the fingerprint from the certificate into the buffer
1332
(gnutls.library.functions
1333
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1334
ctypes.byref(buf_len)))
2480
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2481
ctypes.byref(buf_len))
1335
2482
# Deinit the certificate
1336
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2483
gnutls.openpgp_crt_deinit(crt)
1337
2484
# Convert the buffer to a Python bytestring
1338
2485
fpr = ctypes.string_at(buf, buf_len.value)
1339
2486
# Convert the bytestring to hexadecimal notation
1340
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2487
hex_fpr = binascii.hexlify(fpr).upper()
1341
2488
return hex_fpr
1342
2489
1343
2490
1344
2491
class MultiprocessingMixIn(object):
1345
2492
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2493
1346
2494
def sub_process_main(self, request, address):
1347
2495
try:
1348
2496
self.finish_request(request, address)
1349
except:
2497
except Exception:
1350
2498
self.handle_error(request, address)
1351
2499
self.close_request(request)
1352
2500
1353
2501
def process_request(self, request, address):
1354
2502
"""Start a new process to process the request."""
1355
multiprocessing.Process(target = self.sub_process_main,
1356
args = (request, address)).start()
2503
proc = multiprocessing.Process(target=self.sub_process_main,
2504
args=(request, address))
2505
proc.start()
2506
return proc
2507
1357
2508
1358
2509
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1359
2510
""" adds a pipe to the MixIn """
2511
1360
2512
def process_request(self, request, client_address):
1361
2513
"""Overrides and wraps the original process_request().
1362
2514
1363
2515
This function creates a new pipe in self.pipe
1364
2516
"""
1365
2517
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1366
2518
1367
super(MultiprocessingMixInWithPipe,
1368
self).process_request(request, client_address)
2519
proc = MultiprocessingMixIn.process_request(self, request,
2520
client_address)
1369
2521
self.child_pipe.close()
1370
self.add_pipe(parent_pipe)
2522
self.add_pipe(parent_pipe, proc)
1371
2523
1372
def add_pipe(self, parent_pipe):
2524
def add_pipe(self, parent_pipe, proc):
1373
2525
"""Dummy function; override as necessary"""
1374
pass
2526
raise NotImplementedError()
2527
1375
2528
1376
2529
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1377
2530
socketserver.TCPServer, object):
1378
2531
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1379
2532
1380
2533
Attributes:
1381
2534
enabled: Boolean; whether this server is activated yet
1382
2535
interface: None or a network interface name (string)
1383
2536
use_ipv6: Boolean; to use IPv6 or not
1384
2537
"""
2538
1385
2539
def __init__(self, server_address, RequestHandlerClass,
1386
interface=None, use_ipv6=True):
2540
interface=None,
2541
use_ipv6=True,
2542
socketfd=None):
2543
"""If socketfd is set, use that file descriptor instead of
2544
creating a new one with socket.socket().
2545
"""
1387
2546
self.interface = interface
1388
2547
if use_ipv6:
1389
2548
self.address_family = socket.AF_INET6
2549
if socketfd is not None:
2550
# Save the file descriptor
2551
self.socketfd = socketfd
2552
# Save the original socket.socket() function
2553
self.socket_socket = socket.socket
2554
2555
# To implement --socket, we monkey patch socket.socket.
2556
#
2557
# (When socketserver.TCPServer is a new-style class, we
2558
# could make self.socket into a property instead of monkey
2559
# patching socket.socket.)
2560
#
2561
# Create a one-time-only replacement for socket.socket()
2562
@functools.wraps(socket.socket)
2563
def socket_wrapper(*args, **kwargs):
2564
# Restore original function so subsequent calls are
2565
# not affected.
2566
socket.socket = self.socket_socket
2567
del self.socket_socket
2568
# This time only, return a new socket object from the
2569
# saved file descriptor.
2570
return socket.fromfd(self.socketfd, *args, **kwargs)
2571
# Replace socket.socket() function with wrapper
2572
socket.socket = socket_wrapper
2573
# The socketserver.TCPServer.__init__ will call
2574
# socket.socket(), which might be our replacement,
2575
# socket_wrapper(), if socketfd was set.
1390
2576
socketserver.TCPServer.__init__(self, server_address,
1391
2577
RequestHandlerClass)
2578
1392
2579
def server_bind(self):
1393
2580
"""This overrides the normal server_bind() function
1394
2581
to bind to an interface if one was specified, and also NOT to
1395
2582
bind to an address or port if they were not specified."""
2583
global SO_BINDTODEVICE
1396
2584
if self.interface is not None:
1397
2585
if SO_BINDTODEVICE is None:
1398
logger.error(u"SO_BINDTODEVICE does not exist;"
1399
u" cannot bind to interface %s",
1400
self.interface)
1401
else:
1402
try:
1403
self.socket.setsockopt(socket.SOL_SOCKET,
1404
SO_BINDTODEVICE,
1405
str(self.interface
1406
+ u'\0'))
1407
except socket.error, error:
1408
if error[0] == errno.EPERM:
1409
logger.error(u"No permission to"
1410
u" bind to interface %s",
1411
self.interface)
1412
elif error[0] == errno.ENOPROTOOPT:
1413
logger.error(u"SO_BINDTODEVICE not available;"
1414
u" cannot bind to interface %s",
1415
self.interface)
1416
else:
1417
raise
2586
# Fall back to a hard-coded value which seems to be
2587
# common enough.
2588
logger.warning("SO_BINDTODEVICE not found, trying 25")
2589
SO_BINDTODEVICE = 25
2590
try:
2591
self.socket.setsockopt(
2592
socket.SOL_SOCKET, SO_BINDTODEVICE,
2593
(self.interface + "\0").encode("utf-8"))
2594
except socket.error as error:
2595
if error.errno == errno.EPERM:
2596
logger.error("No permission to bind to"
2597
" interface %s", self.interface)
2598
elif error.errno == errno.ENOPROTOOPT:
2599
logger.error("SO_BINDTODEVICE not available;"
2600
" cannot bind to interface %s",
2601
self.interface)
2602
elif error.errno == errno.ENODEV:
2603
logger.error("Interface %s does not exist,"
2604
" cannot bind", self.interface)
2605
else:
2606
raise
1418
2607
# Only bind(2) the socket if we really need to.
1419
2608
if self.server_address[0] or self.server_address[1]:
2609
if self.server_address[1]:
2610
self.allow_reuse_address = True
1420
2611
if not self.server_address[0]:
1421
2612
if self.address_family == socket.AF_INET6:
1422
any_address = u"::" # in6addr_any
2613
any_address = "::" # in6addr_any
1423
2614
else:
1424
any_address = socket.INADDR_ANY
2615
any_address = "0.0.0.0" # INADDR_ANY
1425
2616
self.server_address = (any_address,
1426
2617
self.server_address[1])
1427
2618
elif not self.server_address[1]:
1428
self.server_address = (self.server_address[0],
1429
0)
2619
self.server_address = (self.server_address[0], 0)
1430
2620
# if self.interface:
1431
2621
# self.server_address = (self.server_address[0],
1432
2622
# 0, # port
1438
2628
1439
2629
class MandosServer(IPv6_TCPServer):
1440
2630
"""Mandos server.
1441
2631
1442
2632
Attributes:
1443
2633
clients: set of Client objects
1444
2634
gnutls_priority GnuTLS priority string
1445
2635
use_dbus: Boolean; to emit D-Bus signals or not
1446
1447
Assumes a gobject.MainLoop event loop.
2636
2637
Assumes a GLib.MainLoop event loop.
1448
2638
"""
2639
1449
2640
def __init__(self, server_address, RequestHandlerClass,
1450
interface=None, use_ipv6=True, clients=None,
1451
gnutls_priority=None, use_dbus=True):
2641
interface=None,
2642
use_ipv6=True,
2643
clients=None,
2644
gnutls_priority=None,
2645
use_dbus=True,
2646
socketfd=None):
1452
2647
self.enabled = False
1453
2648
self.clients = clients
1454
2649
if self.clients is None:
1455
self.clients = set()
2650
self.clients = {}
1456
2651
self.use_dbus = use_dbus
1457
2652
self.gnutls_priority = gnutls_priority
1458
2653
IPv6_TCPServer.__init__(self, server_address,
1459
2654
RequestHandlerClass,
1460
interface = interface,
1461
use_ipv6 = use_ipv6)
2655
interface=interface,
2656
use_ipv6=use_ipv6,
2657
socketfd=socketfd)
2658
1462
2659
def server_activate(self):
1463
2660
if self.enabled:
1464
2661
return socketserver.TCPServer.server_activate(self)
2662
1465
2663
def enable(self):
1466
2664
self.enabled = True
1467
def add_pipe(self, parent_pipe):
2665
2666
def add_pipe(self, parent_pipe, proc):
1468
2667
# Call "handle_ipc" for both data and EOF events
1469
gobject.io_add_watch(parent_pipe.fileno(),
1470
gobject.IO_IN | gobject.IO_HUP,
1471
functools.partial(self.handle_ipc,
1472
parent_pipe = parent_pipe))
1473
1474
def handle_ipc(self, source, condition, parent_pipe=None,
2668
GLib.io_add_watch(
2669
parent_pipe.fileno(),
2670
GLib.IO_IN | GLib.IO_HUP,
2671
functools.partial(self.handle_ipc,
2672
parent_pipe=parent_pipe,
2673
proc=proc))
2674
2675
def handle_ipc(self, source, condition,
2676
parent_pipe=None,
2677
proc=None,
1475
2678
client_object=None):
1476
condition_names = {
1477
gobject.IO_IN: u"IN", # There is data to read.
1478
gobject.IO_OUT: u"OUT", # Data can be written (without
1479
# blocking).
1480
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1481
gobject.IO_ERR: u"ERR", # Error condition.
1482
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1483
# broken, usually for pipes and
1484
# sockets).
1485
}
1486
conditions_string = ' | '.join(name
1487
for cond, name in
1488
condition_names.iteritems()
1489
if cond & condition)
1490
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1491
conditions_string)
2679
# error, or the other end of multiprocessing.Pipe has closed
2680
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2681
# Wait for other process to exit
2682
proc.join()
2683
return False
1492
2684
1493
# error or the other end of multiprocessing.Pipe has closed
1494
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
1495
return False
1496
1497
2685
# Read a request from the child
1498
2686
request = parent_pipe.recv()
1499
logger.debug(u"IPC request: %s", repr(request))
1500
2687
command = request[0]
1501
2688
1502
2689
if command == 'init':
1503
fpr = request[1]
1504
address = request[2]
1505
1506
for c in self.clients:
1507
if c.fingerprint == fpr:
2690
key_id = request[1].decode("ascii")
2691
fpr = request[2].decode("ascii")
2692
address = request[3]
2693
2694
for c in self.clients.values():
2695
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2696
continue
2697
if key_id and c.key_id == key_id:
2698
client = c
2699
break
2700
if fpr and c.fingerprint == fpr:
1508
2701
client = c
1509
2702
break
1510
2703
else:
1511
logger.warning(u"Client not found for fingerprint: %s, ad"
1512
u"dress: %s", fpr, address)
2704
logger.info("Client not found for key ID: %s, address"
2705
": %s", key_id or fpr, address)
1513
2706
if self.use_dbus:
1514
2707
# Emit D-Bus signal
1515
mandos_dbus_service.ClientNotFound(fpr, address)
2708
mandos_dbus_service.ClientNotFound(key_id or fpr,
2709
address[0])
1516
2710
parent_pipe.send(False)
1517
2711
return False
1518
1519
gobject.io_add_watch(parent_pipe.fileno(),
1520
gobject.IO_IN | gobject.IO_HUP,
1521
functools.partial(self.handle_ipc,
1522
parent_pipe = parent_pipe,
1523
client_object = client))
2712
2713
GLib.io_add_watch(
2714
parent_pipe.fileno(),
2715
GLib.IO_IN | GLib.IO_HUP,
2716
functools.partial(self.handle_ipc,
2717
parent_pipe=parent_pipe,
2718
proc=proc,
2719
client_object=client))
1524
2720
parent_pipe.send(True)
1525
# remove the old hook in favor of the new above hook on same fileno
2721
# remove the old hook in favor of the new above hook on
2722
# same fileno
1526
2723
return False
1527
2724
if command == 'funcall':
1528
2725
funcname = request[1]
1529
2726
args = request[2]
1530
2727
kwargs = request[3]
1531
1532
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2728
2729
parent_pipe.send(('data', getattr(client_object,
2730
funcname)(*args,
2731
**kwargs)))
1533
2732
1534
2733
if command == 'getattr':
1535
2734
attrname = request[1]
1536
if callable(client_object.__getattribute__(attrname)):
1537
parent_pipe.send(('function',))
2735
if isinstance(client_object.__getattribute__(attrname),
2736
collections.Callable):
2737
parent_pipe.send(('function', ))
1538
2738
else:
1539
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1540
2739
parent_pipe.send((
2740
'data', client_object.__getattribute__(attrname)))
2741
1541
2742
if command == 'setattr':
1542
2743
attrname = request[1]
1543
2744
value = request[2]
1546
2747
return True
1547
2748
1548
2749
2750
def rfc3339_duration_to_delta(duration):
2751
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2752
2753
>>> rfc3339_duration_to_delta("P7D")
2754
datetime.timedelta(7)
2755
>>> rfc3339_duration_to_delta("PT60S")
2756
datetime.timedelta(0, 60)
2757
>>> rfc3339_duration_to_delta("PT60M")
2758
datetime.timedelta(0, 3600)
2759
>>> rfc3339_duration_to_delta("PT24H")
2760
datetime.timedelta(1)
2761
>>> rfc3339_duration_to_delta("P1W")
2762
datetime.timedelta(7)
2763
>>> rfc3339_duration_to_delta("PT5M30S")
2764
datetime.timedelta(0, 330)
2765
>>> rfc3339_duration_to_delta("P1DT3M20S")
2766
datetime.timedelta(1, 200)
2767
"""
2768
2769
# Parsing an RFC 3339 duration with regular expressions is not
2770
# possible - there would have to be multiple places for the same
2771
# values, like seconds. The current code, while more esoteric, is
2772
# cleaner without depending on a parsing library. If Python had a
2773
# built-in library for parsing we would use it, but we'd like to
2774
# avoid excessive use of external libraries.
2775
2776
# New type for defining tokens, syntax, and semantics all-in-one
2777
Token = collections.namedtuple("Token", (
2778
"regexp", # To match token; if "value" is not None, must have
2779
# a "group" containing digits
2780
"value", # datetime.timedelta or None
2781
"followers")) # Tokens valid after this token
2782
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2783
# the "duration" ABNF definition in RFC 3339, Appendix A.
2784
token_end = Token(re.compile(r"$"), None, frozenset())
2785
token_second = Token(re.compile(r"(\d+)S"),
2786
datetime.timedelta(seconds=1),
2787
frozenset((token_end, )))
2788
token_minute = Token(re.compile(r"(\d+)M"),
2789
datetime.timedelta(minutes=1),
2790
frozenset((token_second, token_end)))
2791
token_hour = Token(re.compile(r"(\d+)H"),
2792
datetime.timedelta(hours=1),
2793
frozenset((token_minute, token_end)))
2794
token_time = Token(re.compile(r"T"),
2795
None,
2796
frozenset((token_hour, token_minute,
2797
token_second)))
2798
token_day = Token(re.compile(r"(\d+)D"),
2799
datetime.timedelta(days=1),
2800
frozenset((token_time, token_end)))
2801
token_month = Token(re.compile(r"(\d+)M"),
2802
datetime.timedelta(weeks=4),
2803
frozenset((token_day, token_end)))
2804
token_year = Token(re.compile(r"(\d+)Y"),
2805
datetime.timedelta(weeks=52),
2806
frozenset((token_month, token_end)))
2807
token_week = Token(re.compile(r"(\d+)W"),
2808
datetime.timedelta(weeks=1),
2809
frozenset((token_end, )))
2810
token_duration = Token(re.compile(r"P"), None,
2811
frozenset((token_year, token_month,
2812
token_day, token_time,
2813
token_week)))
2814
# Define starting values:
2815
# Value so far
2816
value = datetime.timedelta()
2817
found_token = None
2818
# Following valid tokens
2819
followers = frozenset((token_duration, ))
2820
# String left to parse
2821
s = duration
2822
# Loop until end token is found
2823
while found_token is not token_end:
2824
# Search for any currently valid tokens
2825
for token in followers:
2826
match = token.regexp.match(s)
2827
if match is not None:
2828
# Token found
2829
if token.value is not None:
2830
# Value found, parse digits
2831
factor = int(match.group(1), 10)
2832
# Add to value so far
2833
value += factor * token.value
2834
# Strip token from string
2835
s = token.regexp.sub("", s, 1)
2836
# Go to found token
2837
found_token = token
2838
# Set valid next tokens
2839
followers = found_token.followers
2840
break
2841
else:
2842
# No currently valid tokens were found
2843
raise ValueError("Invalid RFC 3339 duration: {!r}"
2844
.format(duration))
2845
# End token found
2846
return value
2847
2848
1549
2849
def string_to_delta(interval):
1550
2850
"""Parse a string and return a datetime.timedelta
1551
1552
>>> string_to_delta(u'7d')
2851
2852
>>> string_to_delta('7d')
1553
2853
datetime.timedelta(7)
1554
>>> string_to_delta(u'60s')
2854
>>> string_to_delta('60s')
1555
2855
datetime.timedelta(0, 60)
1556
>>> string_to_delta(u'60m')
2856
>>> string_to_delta('60m')
1557
2857
datetime.timedelta(0, 3600)
1558
>>> string_to_delta(u'24h')
2858
>>> string_to_delta('24h')
1559
2859
datetime.timedelta(1)
1560
>>> string_to_delta(u'1w')
2860
>>> string_to_delta('1w')
1561
2861
datetime.timedelta(7)
1562
>>> string_to_delta(u'5m 30s')
2862
>>> string_to_delta('5m 30s')
1563
2863
datetime.timedelta(0, 330)
1564
2864
"""
2865
2866
try:
2867
return rfc3339_duration_to_delta(interval)
2868
except ValueError:
2869
pass
2870
1565
2871
timevalue = datetime.timedelta(0)
1566
2872
for s in interval.split():
1567
2873
try:
1568
suffix = unicode(s[-1])
2874
suffix = s[-1]
1569
2875
value = int(s[:-1])
1570
if suffix == u"d":
2876
if suffix == "d":
1571
2877
delta = datetime.timedelta(value)
1572
elif suffix == u"s":
2878
elif suffix == "s":
1573
2879
delta = datetime.timedelta(0, value)
1574
elif suffix == u"m":
2880
elif suffix == "m":
1575
2881
delta = datetime.timedelta(0, 0, 0, 0, value)
1576
elif suffix == u"h":
2882
elif suffix == "h":
1577
2883
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1578
elif suffix == u"w":
2884
elif suffix == "w":
1579
2885
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1580
2886
else:
1581
raise ValueError(u"Unknown suffix %r" % suffix)
1582
except (ValueError, IndexError), e:
1583
raise ValueError(e.message)
2887
raise ValueError("Unknown suffix {!r}".format(suffix))
2888
except IndexError as e:
2889
raise ValueError(*(e.args))
1584
2890
timevalue += delta
1585
2891
return timevalue
1586
2892
1587
2893
1588
def if_nametoindex(interface):
1589
"""Call the C function if_nametoindex(), or equivalent
1590
1591
Note: This function cannot accept a unicode string."""
1592
global if_nametoindex
1593
try:
1594
if_nametoindex = (ctypes.cdll.LoadLibrary
1595
(ctypes.util.find_library(u"c"))
1596
.if_nametoindex)
1597
except (OSError, AttributeError):
1598
logger.warning(u"Doing if_nametoindex the hard way")
1599
def if_nametoindex(interface):
1600
"Get an interface index the hard way, i.e. using fcntl()"
1601
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1602
with contextlib.closing(socket.socket()) as s:
1603
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1604
struct.pack(str(u"16s16x"),
1605
interface))
1606
interface_index = struct.unpack(str(u"I"),
1607
ifreq[16:20])[0]
1608
return interface_index
1609
return if_nametoindex(interface)
1610
1611
1612
def daemon(nochdir = False, noclose = False):
2894
def daemon(nochdir=False, noclose=False):
1613
2895
"""See daemon(3). Standard BSD Unix function.
1614
2896
1615
2897
This should really exist as os.daemon, but it doesn't (yet)."""
1616
2898
if os.fork():
1617
2899
sys.exit()
1618
2900
os.setsid()
1619
2901
if not nochdir:
1620
os.chdir(u"/")
2902
os.chdir("/")
1621
2903
if os.fork():
1622
2904
sys.exit()
1623
2905
if not noclose:
1624
2906
# Close all standard open file descriptors
1625
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2907
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1626
2908
if not stat.S_ISCHR(os.fstat(null).st_mode):
1627
2909
raise OSError(errno.ENODEV,
1628
u"%s not a character device"
1629
% os.path.devnull)
2910
"{} not a character device"
2911
.format(os.devnull))
1630
2912
os.dup2(null, sys.stdin.fileno())
1631
2913
os.dup2(null, sys.stdout.fileno())
1632
2914
os.dup2(null, sys.stderr.fileno())
1635
2917
1636
2918
1637
2919
def main():
1638
2920
1639
2921
##################################################################
1640
2922
# Parsing of options, both command line and config file
1641
1642
parser = optparse.OptionParser(version = "%%prog %s" % version)
1643
parser.add_option("-i", u"--interface", type=u"string",
1644
metavar="IF", help=u"Bind to interface IF")
1645
parser.add_option("-a", u"--address", type=u"string",
1646
help=u"Address to listen for requests on")
1647
parser.add_option("-p", u"--port", type=u"int",
1648
help=u"Port number to receive requests on")
1649
parser.add_option("--check", action=u"store_true",
1650
help=u"Run self-test")
1651
parser.add_option("--debug", action=u"store_true",
1652
help=u"Debug mode; run in foreground and log to"
1653
u" terminal")
1654
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1655
help=u"Debug level for stdout output")
1656
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1657
u" priority string (see GnuTLS documentation)")
1658
parser.add_option("--servicename", type=u"string",
1659
metavar=u"NAME", help=u"Zeroconf service name")
1660
parser.add_option("--configdir", type=u"string",
1661
default=u"/etc/mandos", metavar=u"DIR",
1662
help=u"Directory to search for configuration"
1663
u" files")
1664
parser.add_option("--no-dbus", action=u"store_false",
1665
dest=u"use_dbus", help=u"Do not provide D-Bus"
1666
u" system bus interface")
1667
parser.add_option("--no-ipv6", action=u"store_false",
1668
dest=u"use_ipv6", help=u"Do not use IPv6")
1669
options = parser.parse_args()[0]
1670
2923
2924
parser = argparse.ArgumentParser()
2925
parser.add_argument("-v", "--version", action="version",
2926
version="%(prog)s {}".format(version),
2927
help="show version number and exit")
2928
parser.add_argument("-i", "--interface", metavar="IF",
2929
help="Bind to interface IF")
2930
parser.add_argument("-a", "--address",
2931
help="Address to listen for requests on")
2932
parser.add_argument("-p", "--port", type=int,
2933
help="Port number to receive requests on")
2934
parser.add_argument("--check", action="store_true",
2935
help="Run self-test")
2936
parser.add_argument("--debug", action="store_true",
2937
help="Debug mode; run in foreground and log"
2938
" to terminal", default=None)
2939
parser.add_argument("--debuglevel", metavar="LEVEL",
2940
help="Debug level for stdout output")
2941
parser.add_argument("--priority", help="GnuTLS"
2942
" priority string (see GnuTLS documentation)")
2943
parser.add_argument("--servicename",
2944
metavar="NAME", help="Zeroconf service name")
2945
parser.add_argument("--configdir",
2946
default="/etc/mandos", metavar="DIR",
2947
help="Directory to search for configuration"
2948
" files")
2949
parser.add_argument("--no-dbus", action="store_false",
2950
dest="use_dbus", help="Do not provide D-Bus"
2951
" system bus interface", default=None)
2952
parser.add_argument("--no-ipv6", action="store_false",
2953
dest="use_ipv6", help="Do not use IPv6",
2954
default=None)
2955
parser.add_argument("--no-restore", action="store_false",
2956
dest="restore", help="Do not restore stored"
2957
" state", default=None)
2958
parser.add_argument("--socket", type=int,
2959
help="Specify a file descriptor to a network"
2960
" socket to use instead of creating one")
2961
parser.add_argument("--statedir", metavar="DIR",
2962
help="Directory to save/restore state in")
2963
parser.add_argument("--foreground", action="store_true",
2964
help="Run in foreground", default=None)
2965
parser.add_argument("--no-zeroconf", action="store_false",
2966
dest="zeroconf", help="Do not use Zeroconf",
2967
default=None)
2968
2969
options = parser.parse_args()
2970
1671
2971
if options.check:
1672
2972
import doctest
1673
doctest.testmod()
1674
sys.exit()
1675
2973
fail_count, test_count = doctest.testmod()
2974
sys.exit(os.EX_OK if fail_count == 0 else 1)
2975
1676
2976
# Default values for config file for server-global settings
1677
server_defaults = { u"interface": u"",
1678
u"address": u"",
1679
u"port": u"",
1680
u"debug": u"False",
1681
u"priority":
1682
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1683
u"servicename": u"Mandos",
1684
u"use_dbus": u"True",
1685
u"use_ipv6": u"True",
1686
u"debuglevel": u"",
1687
}
1688
2977
if gnutls.has_rawpk:
2978
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2979
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2980
else:
2981
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2982
":+SIGN-DSA-SHA256")
2983
server_defaults = {"interface": "",
2984
"address": "",
2985
"port": "",
2986
"debug": "False",
2987
"priority": priority,
2988
"servicename": "Mandos",
2989
"use_dbus": "True",
2990
"use_ipv6": "True",
2991
"debuglevel": "",
2992
"restore": "True",
2993
"socket": "",
2994
"statedir": "/var/lib/mandos",
2995
"foreground": "False",
2996
"zeroconf": "True",
2997
}
2998
del priority
2999
1689
3000
# Parse config file for server-global settings
1690
3001
server_config = configparser.SafeConfigParser(server_defaults)
1691
3002
del server_defaults
1692
server_config.read(os.path.join(options.configdir,
1693
u"mandos.conf"))
3003
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1694
3004
# Convert the SafeConfigParser object to a dict
1695
3005
server_settings = server_config.defaults()
1696
3006
# Use the appropriate methods on the non-string config options
1697
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1698
server_settings[option] = server_config.getboolean(u"DEFAULT",
3007
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3008
"foreground", "zeroconf"):
3009
server_settings[option] = server_config.getboolean("DEFAULT",
1699
3010
option)
1700
3011
if server_settings["port"]:
1701
server_settings["port"] = server_config.getint(u"DEFAULT",
1702
u"port")
3012
server_settings["port"] = server_config.getint("DEFAULT",
3013
"port")
3014
if server_settings["socket"]:
3015
server_settings["socket"] = server_config.getint("DEFAULT",
3016
"socket")
3017
# Later, stdin will, and stdout and stderr might, be dup'ed
3018
# over with an opened os.devnull. But we don't want this to
3019
# happen with a supplied network socket.
3020
if 0 <= server_settings["socket"] <= 2:
3021
server_settings["socket"] = os.dup(server_settings
3022
["socket"])
1703
3023
del server_config
1704
3024
1705
3025
# Override the settings from the config file with command line
1706
3026
# options, if set.
1707
for option in (u"interface", u"address", u"port", u"debug",
1708
u"priority", u"servicename", u"configdir",
1709
u"use_dbus", u"use_ipv6", u"debuglevel"):
3027
for option in ("interface", "address", "port", "debug",
3028
"priority", "servicename", "configdir", "use_dbus",
3029
"use_ipv6", "debuglevel", "restore", "statedir",
3030
"socket", "foreground", "zeroconf"):
1710
3031
value = getattr(options, option)
1711
3032
if value is not None:
1712
3033
server_settings[option] = value
1713
3034
del options
1714
3035
# Force all strings to be unicode
1715
3036
for option in server_settings.keys():
1716
if type(server_settings[option]) is str:
1717
server_settings[option] = unicode(server_settings[option])
3037
if isinstance(server_settings[option], bytes):
3038
server_settings[option] = (server_settings[option]
3039
.decode("utf-8"))
3040
# Force all boolean options to be boolean
3041
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3042
"foreground", "zeroconf"):
3043
server_settings[option] = bool(server_settings[option])
3044
# Debug implies foreground
3045
if server_settings["debug"]:
3046
server_settings["foreground"] = True
1718
3047
# Now we have our good server settings in "server_settings"
1719
3048
1720
3049
##################################################################
1721
3050
3051
if (not server_settings["zeroconf"]
3052
and not (server_settings["port"]
3053
or server_settings["socket"] != "")):
3054
parser.error("Needs port or socket to work without Zeroconf")
3055
1722
3056
# For convenience
1723
debug = server_settings[u"debug"]
1724
debuglevel = server_settings[u"debuglevel"]
1725
use_dbus = server_settings[u"use_dbus"]
1726
use_ipv6 = server_settings[u"use_ipv6"]
1727
1728
if server_settings[u"servicename"] != u"Mandos":
1729
syslogger.setFormatter(logging.Formatter
1730
(u'Mandos (%s) [%%(process)d]:'
1731
u' %%(levelname)s: %%(message)s'
1732
% server_settings[u"servicename"]))
1733
3057
debug = server_settings["debug"]
3058
debuglevel = server_settings["debuglevel"]
3059
use_dbus = server_settings["use_dbus"]
3060
use_ipv6 = server_settings["use_ipv6"]
3061
stored_state_path = os.path.join(server_settings["statedir"],
3062
stored_state_file)
3063
foreground = server_settings["foreground"]
3064
zeroconf = server_settings["zeroconf"]
3065
3066
if debug:
3067
initlogger(debug, logging.DEBUG)
3068
else:
3069
if not debuglevel:
3070
initlogger(debug)
3071
else:
3072
level = getattr(logging, debuglevel.upper())
3073
initlogger(debug, level)
3074
3075
if server_settings["servicename"] != "Mandos":
3076
syslogger.setFormatter(
3077
logging.Formatter('Mandos ({}) [%(process)d]:'
3078
' %(levelname)s: %(message)s'.format(
3079
server_settings["servicename"])))
3080
1734
3081
# Parse config file with clients
1735
client_defaults = { u"timeout": u"1h",
1736
u"interval": u"5m",
1737
u"checker": u"fping -q -- %%(host)s",
1738
u"host": u"",
1739
u"approval_delay": u"0s",
1740
u"approval_duration": u"1s",
1741
}
1742
client_config = configparser.SafeConfigParser(client_defaults)
1743
client_config.read(os.path.join(server_settings[u"configdir"],
1744
u"clients.conf"))
1745
3082
client_config = configparser.SafeConfigParser(Client
3083
.client_defaults)
3084
client_config.read(os.path.join(server_settings["configdir"],
3085
"clients.conf"))
3086
1746
3087
global mandos_dbus_service
1747
3088
mandos_dbus_service = None
1748
1749
tcp_server = MandosServer((server_settings[u"address"],
1750
server_settings[u"port"]),
1751
ClientHandler,
1752
interface=(server_settings[u"interface"]
1753
or None),
1754
use_ipv6=use_ipv6,
1755
gnutls_priority=
1756
server_settings[u"priority"],
1757
use_dbus=use_dbus)
1758
pidfilename = u"/var/run/mandos.pid"
1759
try:
1760
pidfile = open(pidfilename, u"w")
1761
except IOError:
1762
logger.error(u"Could not open file %r", pidfilename)
1763
1764
try:
1765
uid = pwd.getpwnam(u"_mandos").pw_uid
1766
gid = pwd.getpwnam(u"_mandos").pw_gid
1767
except KeyError:
1768
try:
1769
uid = pwd.getpwnam(u"mandos").pw_uid
1770
gid = pwd.getpwnam(u"mandos").pw_gid
3089
3090
socketfd = None
3091
if server_settings["socket"] != "":
3092
socketfd = server_settings["socket"]
3093
tcp_server = MandosServer(
3094
(server_settings["address"], server_settings["port"]),
3095
ClientHandler,
3096
interface=(server_settings["interface"] or None),
3097
use_ipv6=use_ipv6,
3098
gnutls_priority=server_settings["priority"],
3099
use_dbus=use_dbus,
3100
socketfd=socketfd)
3101
if not foreground:
3102
pidfilename = "/run/mandos.pid"
3103
if not os.path.isdir("/run/."):
3104
pidfilename = "/var/run/mandos.pid"
3105
pidfile = None
3106
try:
3107
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3108
except IOError as e:
3109
logger.error("Could not open file %r", pidfilename,
3110
exc_info=e)
3111
3112
for name, group in (("_mandos", "_mandos"),
3113
("mandos", "mandos"),
3114
("nobody", "nogroup")):
3115
try:
3116
uid = pwd.getpwnam(name).pw_uid
3117
gid = pwd.getpwnam(group).pw_gid
3118
break
1771
3119
except KeyError:
1772
try:
1773
uid = pwd.getpwnam(u"nobody").pw_uid
1774
gid = pwd.getpwnam(u"nobody").pw_gid
1775
except KeyError:
1776
uid = 65534
1777
gid = 65534
3120
continue
3121
else:
3122
uid = 65534
3123
gid = 65534
1778
3124
try:
1779
3125
os.setgid(gid)
1780
3126
os.setuid(uid)
1781
except OSError, error:
1782
if error[0] != errno.EPERM:
1783
raise error
1784
1785
if not debug and not debuglevel:
1786
syslogger.setLevel(logging.WARNING)
1787
console.setLevel(logging.WARNING)
1788
if debuglevel:
1789
level = getattr(logging, debuglevel.upper())
1790
syslogger.setLevel(level)
1791
console.setLevel(level)
3127
if debug:
3128
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3129
gid))
3130
except OSError as error:
3131
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3132
.format(uid, gid, os.strerror(error.errno)))
3133
if error.errno != errno.EPERM:
3134
raise
1792
3135
1793
3136
if debug:
1794
3137
# Enable all possible GnuTLS debugging
1795
3138
1796
3139
# "Use a log level over 10 to enable all debugging options."
1797
3140
# - GnuTLS manual
1798
gnutls.library.functions.gnutls_global_set_log_level(11)
1799
1800
@gnutls.library.types.gnutls_log_func
3141
gnutls.global_set_log_level(11)
3142
3143
@gnutls.log_func
1801
3144
def debug_gnutls(level, string):
1802
logger.debug(u"GnuTLS: %s", string[:-1])
1803
1804
(gnutls.library.functions
1805
.gnutls_global_set_log_function(debug_gnutls))
1806
3145
logger.debug("GnuTLS: %s", string[:-1])
3146
3147
gnutls.global_set_log_function(debug_gnutls)
3148
1807
3149
# Redirect stdin so all checkers get /dev/null
1808
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3150
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1809
3151
os.dup2(null, sys.stdin.fileno())
1810
3152
if null > 2:
1811
3153
os.close(null)
1812
else:
1813
# No console logging
1814
logger.removeHandler(console)
1815
1816
3154
3155
# Need to fork before connecting to D-Bus
3156
if not foreground:
3157
# Close all input and output, do double fork, etc.
3158
daemon()
3159
3160
# multiprocessing will use threads, so before we use GLib we need
3161
# to inform GLib that threads will be used.
3162
GLib.threads_init()
3163
1817
3164
global main_loop
1818
3165
# From the Avahi example code
1819
DBusGMainLoop(set_as_default=True )
1820
main_loop = gobject.MainLoop()
3166
DBusGMainLoop(set_as_default=True)
3167
main_loop = GLib.MainLoop()
1821
3168
bus = dbus.SystemBus()
1822
3169
# End of Avahi example code
1823
3170
if use_dbus:
1824
3171
try:
1825
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1826
bus, do_not_queue=True)
1827
except dbus.exceptions.NameExistsException, e:
1828
logger.error(unicode(e) + u", disabling D-Bus")
3172
bus_name = dbus.service.BusName("se.recompile.Mandos",
3173
bus,
3174
do_not_queue=True)
3175
old_bus_name = dbus.service.BusName(
3176
"se.bsnet.fukt.Mandos", bus,
3177
do_not_queue=True)
3178
except dbus.exceptions.DBusException as e:
3179
logger.error("Disabling D-Bus:", exc_info=e)
1829
3180
use_dbus = False
1830
server_settings[u"use_dbus"] = False
3181
server_settings["use_dbus"] = False
1831
3182
tcp_server.use_dbus = False
1832
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1833
service = AvahiService(name = server_settings[u"servicename"],
1834
servicetype = u"_mandos._tcp",
1835
protocol = protocol, bus = bus)
1836
if server_settings["interface"]:
1837
service.interface = (if_nametoindex
1838
(str(server_settings[u"interface"])))
3183
if zeroconf:
3184
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3185
service = AvahiServiceToSyslog(
3186
name=server_settings["servicename"],
3187
servicetype="_mandos._tcp",
3188
protocol=protocol,
3189
bus=bus)
3190
if server_settings["interface"]:
3191
service.interface = if_nametoindex(
3192
server_settings["interface"].encode("utf-8"))
1839
3193
1840
if not debug:
1841
# Close all input and output, do double fork, etc.
1842
daemon()
1843
1844
3194
global multiprocessing_manager
1845
3195
multiprocessing_manager = multiprocessing.Manager()
1846
3196
1847
3197
client_class = Client
1848
3198
if use_dbus:
1849
client_class = functools.partial(ClientDBus, bus = bus)
1850
def client_config_items(config, section):
1851
special_settings = {
1852
"approved_by_default":
1853
lambda: config.getboolean(section,
1854
"approved_by_default"),
1855
}
1856
for name, value in config.items(section):
3199
client_class = functools.partial(ClientDBus, bus=bus)
3200
3201
client_settings = Client.config_parser(client_config)
3202
old_client_settings = {}
3203
clients_data = {}
3204
3205
# This is used to redirect stdout and stderr for checker processes
3206
global wnull
3207
wnull = open(os.devnull, "w") # A writable /dev/null
3208
# Only used if server is running in foreground but not in debug
3209
# mode
3210
if debug or not foreground:
3211
wnull.close()
3212
3213
# Get client data and settings from last running state.
3214
if server_settings["restore"]:
3215
try:
3216
with open(stored_state_path, "rb") as stored_state:
3217
if sys.version_info.major == 2:
3218
clients_data, old_client_settings = pickle.load(
3219
stored_state)
3220
else:
3221
bytes_clients_data, bytes_old_client_settings = (
3222
pickle.load(stored_state, encoding="bytes"))
3223
# Fix bytes to strings
3224
# clients_data
3225
# .keys()
3226
clients_data = {(key.decode("utf-8")
3227
if isinstance(key, bytes)
3228
else key): value
3229
for key, value in
3230
bytes_clients_data.items()}
3231
del bytes_clients_data
3232
for key in clients_data:
3233
value = {(k.decode("utf-8")
3234
if isinstance(k, bytes) else k): v
3235
for k, v in
3236
clients_data[key].items()}
3237
clients_data[key] = value
3238
# .client_structure
3239
value["client_structure"] = [
3240
(s.decode("utf-8")
3241
if isinstance(s, bytes)
3242
else s) for s in
3243
value["client_structure"]]
3244
# .name & .host
3245
for k in ("name", "host"):
3246
if isinstance(value[k], bytes):
3247
value[k] = value[k].decode("utf-8")
3248
if "key_id" not in value:
3249
value["key_id"] = ""
3250
elif "fingerprint" not in value:
3251
value["fingerprint"] = ""
3252
# old_client_settings
3253
# .keys()
3254
old_client_settings = {
3255
(key.decode("utf-8")
3256
if isinstance(key, bytes)
3257
else key): value
3258
for key, value in
3259
bytes_old_client_settings.items()}
3260
del bytes_old_client_settings
3261
# .host
3262
for value in old_client_settings.values():
3263
if isinstance(value["host"], bytes):
3264
value["host"] = (value["host"]
3265
.decode("utf-8"))
3266
os.remove(stored_state_path)
3267
except IOError as e:
3268
if e.errno == errno.ENOENT:
3269
logger.warning("Could not load persistent state:"
3270
" {}".format(os.strerror(e.errno)))
3271
else:
3272
logger.critical("Could not load persistent state:",
3273
exc_info=e)
3274
raise
3275
except EOFError as e:
3276
logger.warning("Could not load persistent state: "
3277
"EOFError:",
3278
exc_info=e)
3279
3280
with PGPEngine() as pgp:
3281
for client_name, client in clients_data.items():
3282
# Skip removed clients
3283
if client_name not in client_settings:
3284
continue
3285
3286
# Decide which value to use after restoring saved state.
3287
# We have three different values: Old config file,
3288
# new config file, and saved state.
3289
# New config value takes precedence if it differs from old
3290
# config value, otherwise use saved state.
3291
for name, value in client_settings[client_name].items():
3292
try:
3293
# For each value in new config, check if it
3294
# differs from the old config value (Except for
3295
# the "secret" attribute)
3296
if (name != "secret"
3297
and (value !=
3298
old_client_settings[client_name][name])):
3299
client[name] = value
3300
except KeyError:
3301
pass
3302
3303
# Clients who has passed its expire date can still be
3304
# enabled if its last checker was successful. A Client
3305
# whose checker succeeded before we stored its state is
3306
# assumed to have successfully run all checkers during
3307
# downtime.
3308
if client["enabled"]:
3309
if datetime.datetime.utcnow() >= client["expires"]:
3310
if not client["last_checked_ok"]:
3311
logger.warning(
3312
"disabling client {} - Client never "
3313
"performed a successful checker".format(
3314
client_name))
3315
client["enabled"] = False
3316
elif client["last_checker_status"] != 0:
3317
logger.warning(
3318
"disabling client {} - Client last"
3319
" checker failed with error code"
3320
" {}".format(
3321
client_name,
3322
client["last_checker_status"]))
3323
client["enabled"] = False
3324
else:
3325
client["expires"] = (
3326
datetime.datetime.utcnow()
3327
+ client["timeout"])
3328
logger.debug("Last checker succeeded,"
3329
" keeping {} enabled".format(
3330
client_name))
1857
3331
try:
1858
yield (name, special_settings[name]())
1859
except KeyError:
1860
yield (name, value)
1861
1862
tcp_server.clients.update(set(
1863
client_class(name = section,
1864
config= dict(client_config_items(
1865
client_config, section)))
1866
for section in client_config.sections()))
3332
client["secret"] = pgp.decrypt(
3333
client["encrypted_secret"],
3334
client_settings[client_name]["secret"])
3335
except PGPError:
3336
# If decryption fails, we use secret from new settings
3337
logger.debug("Failed to decrypt {} old secret".format(
3338
client_name))
3339
client["secret"] = (client_settings[client_name]
3340
["secret"])
3341
3342
# Add/remove clients based on new changes made to config
3343
for client_name in (set(old_client_settings)
3344
- set(client_settings)):
3345
del clients_data[client_name]
3346
for client_name in (set(client_settings)
3347
- set(old_client_settings)):
3348
clients_data[client_name] = client_settings[client_name]
3349
3350
# Create all client objects
3351
for client_name, client in clients_data.items():
3352
tcp_server.clients[client_name] = client_class(
3353
name=client_name,
3354
settings=client,
3355
server_settings=server_settings)
3356
1867
3357
if not tcp_server.clients:
1868
logger.warning(u"No clients defined")
1869
1870
try:
1871
with pidfile:
3358
logger.warning("No clients defined")
3359
3360
if not foreground:
3361
if pidfile is not None:
1872
3362
pid = os.getpid()
1873
pidfile.write(str(pid) + "\n")
3363
try:
3364
with pidfile:
3365
print(pid, file=pidfile)
3366
except IOError:
3367
logger.error("Could not write to file %r with PID %d",
3368
pidfilename, pid)
1874
3369
del pidfile
1875
except IOError:
1876
logger.error(u"Could not write to file %r with PID %d",
1877
pidfilename, pid)
1878
except NameError:
1879
# "pidfile" was never created
1880
pass
1881
del pidfilename
1882
1883
if not debug:
1884
signal.signal(signal.SIGINT, signal.SIG_IGN)
1885
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1886
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1887
3370
del pidfilename
3371
3372
for termsig in (signal.SIGHUP, signal.SIGTERM):
3373
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3374
lambda: main_loop.quit() and False)
3375
1888
3376
if use_dbus:
1889
class MandosDBusService(dbus.service.Object):
3377
3378
@alternate_dbus_interfaces(
3379
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3380
class MandosDBusService(DBusObjectWithObjectManager):
1890
3381
"""A D-Bus proxy object"""
3382
1891
3383
def __init__(self):
1892
dbus.service.Object.__init__(self, bus, u"/")
1893
_interface = u"se.bsnet.fukt.Mandos"
1894
1895
@dbus.service.signal(_interface, signature=u"o")
3384
dbus.service.Object.__init__(self, bus, "/")
3385
3386
_interface = "se.recompile.Mandos"
3387
3388
@dbus.service.signal(_interface, signature="o")
1896
3389
def ClientAdded(self, objpath):
1897
3390
"D-Bus signal"
1898
3391
pass
1899
1900
@dbus.service.signal(_interface, signature=u"ss")
1901
def ClientNotFound(self, fingerprint, address):
3392
3393
@dbus.service.signal(_interface, signature="ss")
3394
def ClientNotFound(self, key_id, address):
1902
3395
"D-Bus signal"
1903
3396
pass
1904
1905
@dbus.service.signal(_interface, signature=u"os")
3397
3398
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3399
"true"})
3400
@dbus.service.signal(_interface, signature="os")
1906
3401
def ClientRemoved(self, objpath, name):
1907
3402
"D-Bus signal"
1908
3403
pass
1909
1910
@dbus.service.method(_interface, out_signature=u"ao")
3404
3405
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3406
"true"})
3407
@dbus.service.method(_interface, out_signature="ao")
1911
3408
def GetAllClients(self):
1912
3409
"D-Bus method"
1913
return dbus.Array(c.dbus_object_path
1914
for c in tcp_server.clients)
1915
3410
return dbus.Array(c.dbus_object_path for c in
3411
tcp_server.clients.values())
3412
3413
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3414
"true"})
1916
3415
@dbus.service.method(_interface,
1917
out_signature=u"a{oa{sv}}")
3416
out_signature="a{oa{sv}}")
1918
3417
def GetAllClientsWithProperties(self):
1919
3418
"D-Bus method"
1920
3419
return dbus.Dictionary(
1921
((c.dbus_object_path, c.GetAll(u""))
1922
for c in tcp_server.clients),
1923
signature=u"oa{sv}")
1924
1925
@dbus.service.method(_interface, in_signature=u"o")
3420
{c.dbus_object_path: c.GetAll(
3421
"se.recompile.Mandos.Client")
3422
for c in tcp_server.clients.values()},
3423
signature="oa{sv}")
3424
3425
@dbus.service.method(_interface, in_signature="o")
1926
3426
def RemoveClient(self, object_path):
1927
3427
"D-Bus method"
1928
for c in tcp_server.clients:
3428
for c in tcp_server.clients.values():
1929
3429
if c.dbus_object_path == object_path:
1930
tcp_server.clients.remove(c)
3430
del tcp_server.clients[c.name]
1931
3431
c.remove_from_connection()
1932
# Don't signal anything except ClientRemoved
3432
# Don't signal the disabling
1933
3433
c.disable(quiet=True)
1934
# Emit D-Bus signal
1935
self.ClientRemoved(object_path, c.name)
3434
# Emit D-Bus signal for removal
3435
self.client_removed_signal(c)
1936
3436
return
1937
3437
raise KeyError(object_path)
1938
3438
1939
3439
del _interface
1940
3440
3441
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3442
out_signature="a{oa{sa{sv}}}")
3443
def GetManagedObjects(self):
3444
"""D-Bus method"""
3445
return dbus.Dictionary(
3446
{client.dbus_object_path:
3447
dbus.Dictionary(
3448
{interface: client.GetAll(interface)
3449
for interface in
3450
client._get_all_interface_names()})
3451
for client in tcp_server.clients.values()})
3452
3453
def client_added_signal(self, client):
3454
"""Send the new standard signal and the old signal"""
3455
if use_dbus:
3456
# New standard signal
3457
self.InterfacesAdded(
3458
client.dbus_object_path,
3459
dbus.Dictionary(
3460
{interface: client.GetAll(interface)
3461
for interface in
3462
client._get_all_interface_names()}))
3463
# Old signal
3464
self.ClientAdded(client.dbus_object_path)
3465
3466
def client_removed_signal(self, client):
3467
"""Send the new standard signal and the old signal"""
3468
if use_dbus:
3469
# New standard signal
3470
self.InterfacesRemoved(
3471
client.dbus_object_path,
3472
client._get_all_interface_names())
3473
# Old signal
3474
self.ClientRemoved(client.dbus_object_path,
3475
client.name)
3476
1941
3477
mandos_dbus_service = MandosDBusService()
1942
3478
3479
# Save modules to variables to exempt the modules from being
3480
# unloaded before the function registered with atexit() is run.
3481
mp = multiprocessing
3482
wn = wnull
3483
1943
3484
def cleanup():
1944
3485
"Cleanup function; run on exit"
1945
service.cleanup()
1946
3486
if zeroconf:
3487
service.cleanup()
3488
3489
mp.active_children()
3490
wn.close()
3491
if not (tcp_server.clients or client_settings):
3492
return
3493
3494
# Store client before exiting. Secrets are encrypted with key
3495
# based on what config file has. If config file is
3496
# removed/edited, old secret will thus be unrecovable.
3497
clients = {}
3498
with PGPEngine() as pgp:
3499
for client in tcp_server.clients.values():
3500
key = client_settings[client.name]["secret"]
3501
client.encrypted_secret = pgp.encrypt(client.secret,
3502
key)
3503
client_dict = {}
3504
3505
# A list of attributes that can not be pickled
3506
# + secret.
3507
exclude = {"bus", "changedstate", "secret",
3508
"checker", "server_settings"}
3509
for name, typ in inspect.getmembers(dbus.service
3510
.Object):
3511
exclude.add(name)
3512
3513
client_dict["encrypted_secret"] = (client
3514
.encrypted_secret)
3515
for attr in client.client_structure:
3516
if attr not in exclude:
3517
client_dict[attr] = getattr(client, attr)
3518
3519
clients[client.name] = client_dict
3520
del client_settings[client.name]["secret"]
3521
3522
try:
3523
with tempfile.NamedTemporaryFile(
3524
mode='wb',
3525
suffix=".pickle",
3526
prefix='clients-',
3527
dir=os.path.dirname(stored_state_path),
3528
delete=False) as stored_state:
3529
pickle.dump((clients, client_settings), stored_state,
3530
protocol=2)
3531
tempname = stored_state.name
3532
os.rename(tempname, stored_state_path)
3533
except (IOError, OSError) as e:
3534
if not debug:
3535
try:
3536
os.remove(tempname)
3537
except NameError:
3538
pass
3539
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3540
logger.warning("Could not save persistent state: {}"
3541
.format(os.strerror(e.errno)))
3542
else:
3543
logger.warning("Could not save persistent state:",
3544
exc_info=e)
3545
raise
3546
3547
# Delete all clients, and settings from config
1947
3548
while tcp_server.clients:
1948
client = tcp_server.clients.pop()
3549
name, client = tcp_server.clients.popitem()
1949
3550
if use_dbus:
1950
3551
client.remove_from_connection()
1951
client.disable_hook = None
1952
# Don't signal anything except ClientRemoved
3552
# Don't signal the disabling
1953
3553
client.disable(quiet=True)
3554
# Emit D-Bus signal for removal
1954
3555
if use_dbus:
1955
# Emit D-Bus signal
1956
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1957
client.name)
1958
3556
mandos_dbus_service.client_removed_signal(client)
3557
client_settings.clear()
3558
1959
3559
atexit.register(cleanup)
1960
1961
for client in tcp_server.clients:
3560
3561
for client in tcp_server.clients.values():
1962
3562
if use_dbus:
1963
# Emit D-Bus signal
1964
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1965
client.enable()
1966
3563
# Emit D-Bus signal for adding
3564
mandos_dbus_service.client_added_signal(client)
3565
# Need to initiate checking of clients
3566
if client.enabled:
3567
client.init_checker()
3568
1967
3569
tcp_server.enable()
1968
3570
tcp_server.server_activate()
1969
3571
1970
3572
# Find out what port we got
1971
service.port = tcp_server.socket.getsockname()[1]
3573
if zeroconf:
3574
service.port = tcp_server.socket.getsockname()[1]
1972
3575
if use_ipv6:
1973
logger.info(u"Now listening on address %r, port %d,"
1974
" flowinfo %d, scope_id %d"
1975
% tcp_server.socket.getsockname())
3576
logger.info("Now listening on address %r, port %d,"
3577
" flowinfo %d, scope_id %d",
3578
*tcp_server.socket.getsockname())
1976
3579
else: # IPv4
1977
logger.info(u"Now listening on address %r, port %d"
1978
% tcp_server.socket.getsockname())
1979
1980
#service.interface = tcp_server.socket.getsockname()[3]
1981
3580
logger.info("Now listening on address %r, port %d",
3581
*tcp_server.socket.getsockname())
3582
3583
# service.interface = tcp_server.socket.getsockname()[3]
3584
1982
3585
try:
1983
# From the Avahi example code
1984
try:
1985
service.activate()
1986
except dbus.exceptions.DBusException, error:
1987
logger.critical(u"DBusException: %s", error)
1988
cleanup()
1989
sys.exit(1)
1990
# End of Avahi example code
1991
1992
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1993
lambda *args, **kwargs:
1994
(tcp_server.handle_request
1995
(*args[2:], **kwargs) or True))
1996
1997
logger.debug(u"Starting main loop")
3586
if zeroconf:
3587
# From the Avahi example code
3588
try:
3589
service.activate()
3590
except dbus.exceptions.DBusException as error:
3591
logger.critical("D-Bus Exception", exc_info=error)
3592
cleanup()
3593
sys.exit(1)
3594
# End of Avahi example code
3595
3596
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3597
lambda *args, **kwargs:
3598
(tcp_server.handle_request
3599
(*args[2:], **kwargs) or True))
3600
3601
logger.debug("Starting main loop")
1998
3602
main_loop.run()
1999
except AvahiError, error:
2000
logger.critical(u"AvahiError: %s", error)
3603
except AvahiError as error:
3604
logger.critical("Avahi Error", exc_info=error)
2001
3605
cleanup()
2002
3606
sys.exit(1)
2003
3607
except KeyboardInterrupt:
2004
3608
if debug:
2005
print >> sys.stderr
2006
logger.debug(u"Server received KeyboardInterrupt")
2007
logger.debug(u"Server exiting")
3609
print("", file=sys.stderr)
3610
logger.debug("Server received KeyboardInterrupt")
3611
logger.debug("Server exiting")
2008
3612
# Must run before the D-Bus bus name gets deregistered
2009
3613
cleanup()
2010
3614
3615
2011
3616
if __name__ == '__main__':
2012
3617
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0