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- Committer: Teddy Hogeborn
- Date: 2010-11-16 18:10:22 UTC
- mfrom: (275.1.1 mandos-release)
- mto: (237.12.2 mandos-persistent) (24.1.171 mandos) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 282.
- Revision ID: teddy@fukt.bsnet.se-20101116181022-oz0dahg0q4jnyb0y
Merge from Björn
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- 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 © 2008-2019 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
14
# Copyright © 2008-2010 Teddy Hogeborn
15
# Copyright © 2008-2010 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
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
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
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
47
37
import socket
48
import argparse
38
import optparse
49
39
import datetime
50
40
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
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
55
48
import sys
56
49
import re
57
50
import os
66
59
import struct
67
60
import fcntl
68
61
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
62
import cPickle as pickle
73
63
import multiprocessing
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
64
81
65
import dbus
82
66
import dbus.service
83
from gi.repository import GLib
67
import gobject
68
import avahi
84
69
from dbus.mainloop.glib import DBusGMainLoop
85
70
import ctypes
86
71
import ctypes.util
87
72
import xml.dom.minidom
88
73
import inspect
89
74
90
# Try to find the value of SO_BINDTODEVICE:
91
75
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:
94
76
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
95
77
except AttributeError:
96
78
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
99
79
from IN import SO_BINDTODEVICE
100
80
except ImportError:
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
81
SO_BINDTODEVICE = None
82
83
84
version = "1.2.3"
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)
302
101
303
102
class AvahiError(Exception):
304
103
def __init__(self, value, *args, **kwargs):
305
104
self.value = value
306
return super(AvahiError, self).__init__(value, *args,
307
**kwargs)
308
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
309
108
310
109
class AvahiServiceError(AvahiError):
311
110
pass
312
111
313
314
112
class AvahiGroupError(AvahiError):
315
113
pass
316
114
317
115
318
116
class AvahiService(object):
319
117
"""An Avahi (Zeroconf) service.
320
118
321
119
Attributes:
322
120
interface: integer; avahi.IF_UNSPEC or an interface index.
323
121
Used to optionally bind to the specified interface.
324
name: string; Example: 'Mandos'
325
type: string; Example: '_mandos._tcp'.
326
See <https://www.iana.org/assignments/service-names-port-numbers>
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
124
See <http://www.dns-sd.org/ServiceTypes.html>
327
125
port: integer; what port to announce
328
126
TXT: list of strings; TXT record for the service
329
127
domain: string; Domain to publish on, default to .local if empty.
335
133
server: D-Bus Server
336
134
bus: dbus.SystemBus()
337
135
"""
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):
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):
350
140
self.interface = interface
351
141
self.name = name
352
142
self.type = servicetype
360
150
self.group = None # our entry group
361
151
self.server = None
362
152
self.bus = bus
363
self.entry_group_state_changed_match = None
364
365
def rename(self, remove=True):
153
def rename(self):
366
154
"""Derived from the Avahi example code"""
367
155
if self.rename_count >= self.max_renames:
368
logger.critical("No suitable Zeroconf service name found"
369
" after %i retries, exiting.",
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
370
158
self.rename_count)
371
raise AvahiServiceError("Too many renames")
372
self.name = str(
373
self.server.GetAlternativeServiceName(self.name))
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 ...",
162
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()
168
try:
169
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
172
self.cleanup()
173
os._exit(1)
374
174
self.rename_count += 1
375
logger.info("Changing Zeroconf service name to %r ...",
376
self.name)
377
if remove:
378
self.remove()
379
try:
380
self.add()
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
391
175
def remove(self):
392
176
"""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
396
177
if self.group is not None:
397
178
self.group.Reset()
398
399
179
def add(self):
400
180
"""Derived from the Avahi example code"""
401
self.remove()
402
181
if self.group is None:
403
182
self.group = dbus.Interface(
404
183
self.bus.get_object(avahi.DBUS_NAME,
405
184
self.server.EntryGroupNew()),
406
185
avahi.DBUS_INTERFACE_ENTRY_GROUP)
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' ...",
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' ...",
411
190
self.name, self.type)
412
191
self.group.AddService(
413
192
self.interface,
418
197
dbus.UInt16(self.port),
419
198
avahi.string_array_to_txt_array(self.TXT))
420
199
self.group.Commit()
421
422
200
def entry_group_state_changed(self, state, error):
423
201
"""Derived from the Avahi example code"""
424
logger.debug("Avahi entry group state change: %i", state)
425
202
logger.debug(u"Avahi entry group state change: %i", state)
203
426
204
if state == avahi.ENTRY_GROUP_ESTABLISHED:
427
logger.debug("Zeroconf service established.")
205
logger.debug(u"Zeroconf service established.")
428
206
elif state == avahi.ENTRY_GROUP_COLLISION:
429
logger.info("Zeroconf service name collision.")
207
logger.info(u"Zeroconf service name collision.")
430
208
self.rename()
431
209
elif state == avahi.ENTRY_GROUP_FAILURE:
432
logger.critical("Avahi: Error in group state changed %s",
433
str(error))
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
210
logger.critical(u"Avahi: Error in group state changed %s",
211
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
436
214
def cleanup(self):
437
215
"""Derived from the Avahi example code"""
438
216
if self.group is not None:
439
try:
440
self.group.Free()
441
except (dbus.exceptions.UnknownMethodException,
442
dbus.exceptions.DBusException):
443
pass
217
self.group.Free()
444
218
self.group = None
445
self.remove()
446
447
def server_state_changed(self, state, error=None):
219
def server_state_changed(self, state):
448
220
"""Derived from the Avahi example code"""
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()
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()
463
225
elif state == avahi.SERVER_RUNNING:
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
226
self.add()
482
227
def activate(self):
483
228
"""Derived from the Avahi example code"""
484
229
if self.server is None:
485
230
self.server = dbus.Interface(
486
231
self.bus.get_object(avahi.DBUS_NAME,
487
avahi.DBUS_PATH_SERVER,
488
follow_name_owner_changes=True),
232
avahi.DBUS_PATH_SERVER),
489
233
avahi.DBUS_INTERFACE_SERVER)
490
self.server.connect_to_signal("StateChanged",
491
self.server_state_changed)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
492
236
self.server_state_changed(self.server.GetState())
493
237
494
238
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
817
239
class Client(object):
818
240
"""A representation of a client host served by this server.
819
241
820
242
Attributes:
821
approved: bool(); 'None' if not yet approved/disapproved
243
_approved: bool(); 'None' if not yet approved/disapproved
822
244
approval_delay: datetime.timedelta(); Time to wait for approval
823
245
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
246
checker: subprocess.Popen(); a running checker process used
247
to see if the client lives.
248
'None' if no process is running.
249
checker_callback_tag: a gobject event source tag, or None
828
250
checker_command: string; External command which is run to check
829
251
if client lives. %() expansions are done at
830
252
runtime with vars(self) as dict, so that for
831
253
instance %(name)s can be used in the command.
832
checker_initiator_tag: a GLib event source tag, or None
254
checker_initiator_tag: a gobject event source tag, or None
833
255
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
256
current_checker_command: string; current running checker_command
837
disable_initiator_tag: a GLib event source tag, or None
257
disable_hook: If set, called by disable() as disable_hook(self)
258
disable_initiator_tag: a gobject event source tag, or None
838
259
enabled: bool()
839
260
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
261
uniquely identify the client
843
262
host: string; available for use by the checker command
844
263
interval: datetime.timedelta(); How often to start a new checker
845
264
last_approval_request: datetime.datetime(); (UTC) or None
846
265
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
266
last_enabled: datetime.datetime(); (UTC)
853
267
name: string; from the config file, used in log messages and
854
268
D-Bus identifiers
855
269
secret: bytestring; sent verbatim (over TLS) to client
856
270
timeout: datetime.timedelta(); How long from last_checked_ok
857
271
until this client is disabled
858
extended_timeout: extra long timeout when secret has been sent
859
272
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()
863
273
"""
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
274
275
runtime_expansions = (u"approval_delay", u"approval_duration",
276
u"created", u"enabled", u"fingerprint",
277
u"host", u"interval", u"last_checked_ok",
278
u"last_enabled", u"name", u"timeout")
279
882
280
@staticmethod
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):
281
def _timedelta_to_milliseconds(td):
282
"Convert a datetime.timedelta() to milliseconds"
283
return ((td.days * 24 * 60 * 60 * 1000)
284
+ (td.seconds * 1000)
285
+ (td.microseconds // 1000))
286
287
def timeout_milliseconds(self):
288
"Return the 'timeout' attribute in milliseconds"
289
return self._timedelta_to_milliseconds(self.timeout)
290
291
def interval_milliseconds(self):
292
"Return the 'interval' attribute in milliseconds"
293
return self._timedelta_to_milliseconds(self.interval)
294
295
def approval_delay_milliseconds(self):
296
return self._timedelta_to_milliseconds(self.approval_delay)
297
298
def __init__(self, name = None, disable_hook=None, config=None):
299
"""Note: the 'checker' key in 'config' sets the
300
'checker_command' attribute and *not* the 'checker'
301
attribute."""
937
302
self.name = name
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)
303
if config is None:
304
config = {}
305
logger.debug(u"Creating client %r", self.name)
306
# Uppercase and remove spaces from fingerprint for later
307
# comparison purposes with return value from the fingerprint()
308
# function
309
self.fingerprint = (config[u"fingerprint"].upper()
310
.replace(u" ", u""))
311
logger.debug(u" Fingerprint: %s", self.fingerprint)
312
if u"secret" in config:
313
self.secret = config[u"secret"].decode(u"base64")
314
elif u"secfile" in config:
315
with open(os.path.expanduser(os.path.expandvars
316
(config[u"secfile"])),
317
"rb") as secfile:
318
self.secret = secfile.read()
951
319
else:
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
320
raise TypeError(u"No secret or secfile for client %s"
321
% self.name)
322
self.host = config.get(u"host", u"")
323
self.created = datetime.datetime.utcnow()
324
self.enabled = False
325
self.last_approval_request = None
326
self.last_enabled = None
327
self.last_checked_ok = None
328
self.timeout = string_to_delta(config[u"timeout"])
329
self.interval = string_to_delta(config[u"interval"])
330
self.disable_hook = disable_hook
962
331
self.checker = None
963
332
self.checker_initiator_tag = None
964
333
self.disable_initiator_tag = None
965
334
self.checker_callback_tag = None
335
self.checker_command = config[u"checker"]
966
336
self.current_checker_command = None
967
self.approved = None
337
self.last_connect = None
338
self._approved = None
339
self.approved_by_default = config.get(u"approved_by_default",
340
True)
968
341
self.approvals_pending = 0
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
342
self.approval_delay = string_to_delta(
343
config[u"approval_delay"])
344
self.approval_duration = string_to_delta(
345
config[u"approval_duration"])
346
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
347
982
348
def send_changedstate(self):
983
with self.changedstate:
984
self.changedstate.notify_all()
985
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
986
353
def enable(self):
987
354
"""Start this client's checker and timeout hooks"""
988
if getattr(self, "enabled", False):
355
if getattr(self, u"enabled", False):
989
356
# Already enabled
990
357
return
991
self.expires = datetime.datetime.utcnow() + self.timeout
992
self.enabled = True
358
self.send_changedstate()
993
359
self.last_enabled = datetime.datetime.utcnow()
994
self.init_checker()
995
self.send_changedstate()
996
360
# Schedule a new checker to be started an 'interval' from now,
361
# and every interval from then on.
362
self.checker_initiator_tag = (gobject.timeout_add
363
(self.interval_milliseconds(),
364
self.start_checker))
365
# Schedule a disable() when 'timeout' has passed
366
self.disable_initiator_tag = (gobject.timeout_add
367
(self.timeout_milliseconds(),
368
self.disable))
369
self.enabled = True
370
# Also start a new checker *right now*.
371
self.start_checker()
372
997
373
def disable(self, quiet=True):
998
374
"""Disable this client."""
999
375
if not getattr(self, "enabled", False):
1000
376
return False
1001
377
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)
378
self.send_changedstate()
379
if not quiet:
380
logger.info(u"Disabling client %s", self.name)
381
if getattr(self, u"disable_initiator_tag", False):
382
gobject.source_remove(self.disable_initiator_tag)
1005
383
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)
384
if getattr(self, u"checker_initiator_tag", False):
385
gobject.source_remove(self.checker_initiator_tag)
1009
386
self.checker_initiator_tag = None
1010
387
self.stop_checker()
388
if self.disable_hook:
389
self.disable_hook(self)
1011
390
self.enabled = False
1012
if not quiet:
1013
self.send_changedstate()
1014
# Do not run this again if called by a GLib.timeout_add
391
# Do not run this again if called by a gobject.timeout_add
1015
392
return False
1016
393
1017
394
def __del__(self):
395
self.disable_hook = None
1018
396
self.disable()
1019
1020
def init_checker(self):
1021
# Schedule a new checker to be started an 'interval' from now,
1022
# and every interval from then on.
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)
1028
# Schedule a disable() when 'timeout' has passed
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)
1033
# Also start a new checker *right now*.
1034
self.start_checker()
1035
1036
def checker_callback(self, source, condition, connection,
1037
command):
397
398
def checker_callback(self, pid, condition, command):
1038
399
"""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()
1043
400
self.checker_callback_tag = None
1044
401
self.checker = None
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",
402
if os.WIFEXITED(condition):
403
exitstatus = os.WEXITSTATUS(condition)
404
if exitstatus == 0:
405
logger.info(u"Checker for %(name)s succeeded",
1051
406
vars(self))
1052
407
self.checked_ok()
1053
408
else:
1054
logger.info("Checker for %(name)s failed", vars(self))
409
logger.info(u"Checker for %(name)s failed",
410
vars(self))
1055
411
else:
1056
self.last_checker_status = -1
1057
self.last_checker_signal = -returncode
1058
logger.warning("Checker for %(name)s crashed?",
412
logger.warning(u"Checker for %(name)s crashed?",
1059
413
vars(self))
1060
return False
1061
414
1062
415
def checked_ok(self):
1063
"""Assert that the client has been seen, alive and well."""
416
"""Bump up the timeout for this client.
417
418
This should only be called when the client has been seen,
419
alive and well.
420
"""
1064
421
self.last_checked_ok = datetime.datetime.utcnow()
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
422
gobject.source_remove(self.disable_initiator_tag)
423
self.disable_initiator_tag = (gobject.timeout_add
424
(self.timeout_milliseconds(),
425
self.disable))
426
1081
427
def need_approval(self):
1082
428
self.last_approval_request = datetime.datetime.utcnow()
1083
429
1084
430
def start_checker(self):
1085
431
"""Start a new checker subprocess if one is not running.
1086
432
1087
433
If a checker already exists, leave it running and do
1088
434
nothing."""
1089
435
# The reason for not killing a running checker is that if we
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
436
# did that, then if a checker (for some reason) started
437
# running slowly and taking more than 'interval' time, the
438
# client would inevitably timeout, since no checker would get
439
# a chance to run to completion. If we instead leave running
1094
440
# checkers alone, the checker would have to take more time
1095
441
# than 'timeout' for the client to be disabled, which is as it
1096
442
# should be.
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
443
444
# If a checker exists, make sure it is not a zombie
445
try:
446
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
447
except (AttributeError, OSError), error:
448
if (isinstance(error, OSError)
449
and error.errno != errno.ECHILD):
450
raise error
451
else:
452
if pid:
453
logger.warning(u"Checker was a zombie")
454
gobject.source_remove(self.checker_callback_tag)
455
self.checker_callback(pid, status,
456
self.current_checker_command)
1102
457
# Start a new checker if needed
1103
458
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}
1108
459
try:
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
460
# In case checker_command has exactly one % operator
461
command = self.checker_command % self.host
462
except TypeError:
463
# Escape attributes for the shell
464
escaped_attrs = dict(
465
(attr,
466
re.escape(unicode(str(getattr(self, attr, u"")),
467
errors=
468
u'replace')))
469
for attr in
470
self.runtime_expansions)
471
472
try:
473
command = self.checker_command % escaped_attrs
474
except TypeError, error:
475
logger.error(u'Could not format string "%s":'
476
u' %s', self.checker_command, error)
477
return True # Try again later
1115
478
self.current_checker_command = command
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
479
try:
480
logger.info(u"Starting checker %r for %s",
481
command, self.name)
482
# We don't need to redirect stdout and stderr, since
483
# in normal mode, that is already done by daemon(),
484
# and in debug mode we don't want to. (Stdin is
485
# always replaced by /dev/null.)
486
self.checker = subprocess.Popen(command,
487
close_fds=True,
488
shell=True, cwd=u"/")
489
self.checker_callback_tag = (gobject.child_watch_add
490
(self.checker.pid,
491
self.checker_callback,
492
data=command))
493
# The checker may have completed before the gobject
494
# watch was added. Check for this.
495
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
496
if pid:
497
gobject.source_remove(self.checker_callback_tag)
498
self.checker_callback(pid, status, command)
499
except OSError, error:
500
logger.error(u"Failed to start subprocess: %s",
501
error)
502
# Re-run this periodically if run by gobject.timeout_add
1142
503
return True
1143
504
1144
505
def stop_checker(self):
1145
506
"""Force the checker process, if any, to stop."""
1146
507
if self.checker_callback_tag:
1147
GLib.source_remove(self.checker_callback_tag)
508
gobject.source_remove(self.checker_callback_tag)
1148
509
self.checker_callback_tag = None
1149
if getattr(self, "checker", None) is None:
510
if getattr(self, u"checker", None) is None:
1150
511
return
1151
logger.debug("Stopping checker for %(name)s", vars(self))
1152
self.checker.terminate()
512
logger.debug(u"Stopping checker for %(name)s", vars(self))
513
try:
514
os.kill(self.checker.pid, signal.SIGTERM)
515
#time.sleep(0.5)
516
#if self.checker.poll() is None:
517
# os.kill(self.checker.pid, signal.SIGKILL)
518
except OSError, error:
519
if error.errno != errno.ESRCH: # No such process
520
raise
1153
521
self.checker = None
1154
522
1155
1156
def dbus_service_property(dbus_interface,
1157
signature="v",
1158
access="readwrite",
1159
byte_arrays=False):
523
def dbus_service_property(dbus_interface, signature=u"v",
524
access=u"readwrite", byte_arrays=False):
1160
525
"""Decorators for marking methods of a DBusObjectWithProperties to
1161
526
become properties on the D-Bus.
1162
527
1163
528
The decorated method will be called with no arguments by "Get"
1164
529
and with one argument by "Set".
1165
530
1166
531
The parameters, where they are supported, are the same as
1167
532
dbus.service.method, except there is only "signature", since the
1168
533
type from Get() and the type sent to Set() is the same.
1169
534
"""
1170
535
# Encoding deeply encoded byte arrays is not supported yet by the
1171
536
# "Set" method, so we fail early here:
1172
if byte_arrays and signature != "ay":
1173
raise ValueError("Byte arrays not supported for non-'ay'"
1174
" signature {!r}".format(signature))
1175
537
if byte_arrays and signature != u"ay":
538
raise ValueError(u"Byte arrays not supported for non-'ay'"
539
u" signature %r" % signature)
1176
540
def decorator(func):
1177
541
func._dbus_is_property = True
1178
542
func._dbus_interface = dbus_interface
1179
543
func._dbus_signature = signature
1180
544
func._dbus_access = access
1181
545
func._dbus_name = func.__name__
1182
if func._dbus_name.endswith("_dbus_property"):
546
if func._dbus_name.endswith(u"_dbus_property"):
1183
547
func._dbus_name = func._dbus_name[:-14]
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
548
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
549
return func
1230
550
return decorator
1231
551
1232
552
1233
553
class DBusPropertyException(dbus.exceptions.DBusException):
1234
554
"""A base class for D-Bus property-related exceptions
1235
555
"""
1236
pass
556
def __unicode__(self):
557
return unicode(str(self))
1237
558
1238
559
1239
560
class DBusPropertyAccessException(DBusPropertyException):
1248
569
pass
1249
570
1250
571
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):
572
class DBusObjectWithProperties(dbus.service.Object):
1341
573
"""A D-Bus object with properties.
1342
574
1343
575
Classes inheriting from this can use the dbus_service_property
1344
576
decorator to expose methods as D-Bus properties. It exposes the
1345
577
standard Get(), Set(), and GetAll() methods on the D-Bus.
1346
578
"""
1347
579
580
@staticmethod
581
def _is_dbus_property(obj):
582
return getattr(obj, u"_dbus_is_property", False)
583
584
def _get_all_dbus_properties(self):
585
"""Returns a generator of (name, attribute) pairs
586
"""
587
return ((prop._dbus_name, prop)
588
for name, prop in
589
inspect.getmembers(self, self._is_dbus_property))
590
1348
591
def _get_dbus_property(self, interface_name, property_name):
1349
592
"""Returns a bound method if one exists which is a D-Bus
1350
593
property with the specified name and interface.
1351
594
"""
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
595
for name in (property_name,
596
property_name + u"_dbus_property"):
597
prop = getattr(self, name, None)
598
if (prop is None
599
or not self._is_dbus_property(prop)
600
or prop._dbus_name != property_name
601
or (interface_name and prop._dbus_interface
602
and interface_name != prop._dbus_interface)):
603
continue
604
return prop
1359
605
# No such property
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")
606
raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
+ interface_name + u"."
608
+ property_name)
609
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
611
out_signature=u"v")
1375
612
def Get(self, interface_name, property_name):
1376
613
"""Standard D-Bus property Get() method, see D-Bus standard.
1377
614
"""
1378
615
prop = self._get_dbus_property(interface_name, property_name)
1379
if prop._dbus_access == "write":
616
if prop._dbus_access == u"write":
1380
617
raise DBusPropertyAccessException(property_name)
1381
618
value = prop()
1382
if not hasattr(value, "variant_level"):
619
if not hasattr(value, u"variant_level"):
1383
620
return value
1384
621
return type(value)(value, variant_level=value.variant_level+1)
1385
1386
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
622
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1387
624
def Set(self, interface_name, property_name, value):
1388
625
"""Standard D-Bus property Set() method, see D-Bus standard.
1389
626
"""
1390
627
prop = self._get_dbus_property(interface_name, property_name)
1391
if prop._dbus_access == "read":
628
if prop._dbus_access == u"read":
1392
629
raise DBusPropertyAccessException(property_name)
1393
if prop._dbus_get_args_options["byte_arrays"]:
630
if prop._dbus_get_args_options[u"byte_arrays"]:
1394
631
# The byte_arrays option is not supported yet on
1395
632
# signatures other than "ay".
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))
633
if prop._dbus_signature != u"ay":
634
raise ValueError
635
value = dbus.ByteArray(''.join(unichr(byte)
636
for byte in value))
1402
637
prop(value)
1403
1404
@dbus.service.method(dbus.PROPERTIES_IFACE,
1405
in_signature="s",
1406
out_signature="a{sv}")
638
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
1407
641
def GetAll(self, interface_name):
1408
642
"""Standard D-Bus property GetAll() method, see D-Bus
1409
643
standard.
1410
644
1411
645
Note: Will not include properties with access="write".
1412
646
"""
1413
properties = {}
1414
for name, prop in self._get_all_dbus_things("property"):
647
all = {}
648
for name, prop in self._get_all_dbus_properties():
1415
649
if (interface_name
1416
650
and interface_name != prop._dbus_interface):
1417
651
# Interface non-empty but did not match
1418
652
continue
1419
653
# Ignore write-only properties
1420
if prop._dbus_access == "write":
654
if prop._dbus_access == u"write":
1421
655
continue
1422
656
value = prop()
1423
if not hasattr(value, "variant_level"):
1424
properties[name] = value
657
if not hasattr(value, u"variant_level"):
658
all[name] = value
1425
659
continue
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
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
663
1438
664
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1439
out_signature="s",
665
out_signature=u"s",
1440
666
path_keyword='object_path',
1441
667
connection_keyword='connection')
1442
668
def Introspect(self, object_path, connection):
1443
"""Overloading of standard D-Bus method.
1444
1445
Inserts property tags and interface annotation tags.
669
"""Standard D-Bus method, overloaded to insert property tags.
1446
670
"""
1447
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1448
object_path,
1449
connection)
671
xmlstring = dbus.service.Object.Introspect(self, object_path,
672
connection)
1450
673
try:
1451
674
document = xml.dom.minidom.parseString(xmlstring)
1452
1453
675
def make_tag(document, name, prop):
1454
e = document.createElement("property")
1455
e.setAttribute("name", name)
1456
e.setAttribute("type", prop._dbus_signature)
1457
e.setAttribute("access", prop._dbus_access)
676
e = document.createElement(u"property")
677
e.setAttribute(u"name", name)
678
e.setAttribute(u"type", prop._dbus_signature)
679
e.setAttribute(u"access", prop._dbus_access)
1458
680
return e
1459
1460
for if_tag in document.getElementsByTagName("interface"):
1461
# Add property tags
681
for if_tag in document.getElementsByTagName(u"interface"):
1462
682
for tag in (make_tag(document, name, prop)
1463
683
for name, prop
1464
in self._get_all_dbus_things("property")
684
in self._get_all_dbus_properties()
1465
685
if prop._dbus_interface
1466
== if_tag.getAttribute("name")):
686
== if_tag.getAttribute(u"name")):
1467
687
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)
1484
688
# Add the names to the return values for the
1485
689
# "org.freedesktop.DBus.Properties" methods
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"})
690
if (if_tag.getAttribute(u"name")
691
== u"org.freedesktop.DBus.Properties"):
692
for cn in if_tag.getElementsByTagName(u"method"):
693
if cn.getAttribute(u"name") == u"Get":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"value")
698
elif cn.getAttribute(u"name") == u"GetAll":
699
for arg in cn.getElementsByTagName(u"arg"):
700
if (arg.getAttribute(u"direction")
701
== u"out"):
702
arg.setAttribute(u"name", u"props")
703
xmlstring = document.toxml(u"utf-8")
704
document.unlink()
705
except (AttributeError, xml.dom.DOMException,
706
xml.parsers.expat.ExpatError), error:
707
logger.error(u"Failed to override Introspection method",
708
error)
709
return xmlstring
710
711
1757
712
class ClientDBus(Client, DBusObjectWithProperties):
1758
713
"""A Client class using D-Bus
1759
714
1760
715
Attributes:
1761
716
dbus_object_path: dbus.ObjectPath
1762
717
bus: dbus.SystemBus()
1763
718
"""
1764
719
1765
720
runtime_expansions = (Client.runtime_expansions
1766
+ ("dbus_object_path", ))
1767
1768
_interface = "se.recompile.Mandos.Client"
1769
721
+ (u"dbus_object_path",))
722
1770
723
# dbus.service.Object doesn't use super(), so we can't either.
1771
1772
def __init__(self, bus=None, *args, **kwargs):
724
725
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
1773
727
self.bus = bus
1774
728
Client.__init__(self, *args, **kwargs)
1775
729
# Only now, when this client is initialized, can it show up on
1776
730
# the D-Bus
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)
731
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
734
self.dbus_object_path = (dbus.ObjectPath
735
(u"/clients/" + client_object_name))
1782
736
DBusObjectWithProperties.__init__(self, self.bus,
1783
737
self.dbus_object_path)
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
738
739
def _get_approvals_pending(self):
740
return self._approvals_pending
741
def _set_approvals_pending(self, value):
742
old_value = self._approvals_pending
743
self._approvals_pending = value
744
bval = bool(value)
745
if (hasattr(self, "dbus_object_path")
746
and bval is not bool(old_value)):
747
dbus_bool = dbus.Boolean(bval, variant_level=1)
748
self.PropertyChanged(dbus.String(u"ApprovalPending"),
749
dbus_bool)
750
751
approvals_pending = property(_get_approvals_pending,
752
_set_approvals_pending)
753
del _get_approvals_pending, _set_approvals_pending
754
755
@staticmethod
756
def _datetime_to_dbus(dt, variant_level=0):
757
"""Convert a UTC datetime.datetime() to a D-Bus type."""
758
return dbus.String(dt.isoformat(),
759
variant_level=variant_level)
760
761
def enable(self):
762
oldstate = getattr(self, u"enabled", False)
763
r = Client.enable(self)
764
if oldstate != self.enabled:
765
# Emit D-Bus signals
766
self.PropertyChanged(dbus.String(u"Enabled"),
767
dbus.Boolean(True, variant_level=1))
768
self.PropertyChanged(
769
dbus.String(u"LastEnabled"),
770
self._datetime_to_dbus(self.last_enabled,
771
variant_level=1))
772
return r
773
774
def disable(self, quiet = False):
775
oldstate = getattr(self, u"enabled", False)
776
r = Client.disable(self, quiet=quiet)
777
if not quiet and oldstate != self.enabled:
778
# Emit D-Bus signal
779
self.PropertyChanged(dbus.String(u"Enabled"),
780
dbus.Boolean(False, variant_level=1))
781
return r
782
1866
783
def __del__(self, *args, **kwargs):
1867
784
try:
1868
785
self.remove_from_connection()
1869
786
except LookupError:
1870
787
pass
1871
if hasattr(DBusObjectWithProperties, "__del__"):
788
if hasattr(DBusObjectWithProperties, u"__del__"):
1872
789
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1873
790
Client.__del__(self, *args, **kwargs)
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:
791
792
def checker_callback(self, pid, condition, command,
793
*args, **kwargs):
794
self.checker_callback_tag = None
795
self.checker = None
796
# Emit D-Bus signal
797
self.PropertyChanged(dbus.String(u"CheckerRunning"),
798
dbus.Boolean(False, variant_level=1))
799
if os.WIFEXITED(condition):
800
exitstatus = os.WEXITSTATUS(condition)
1882
801
# Emit D-Bus signal
1883
802
self.CheckerCompleted(dbus.Int16(exitstatus),
1884
# This is specific to GNU libC
1885
dbus.Int64(exitstatus << 8),
803
dbus.Int64(condition),
1886
804
dbus.String(command))
1887
805
else:
1888
806
# Emit D-Bus signal
1889
807
self.CheckerCompleted(dbus.Int16(-1),
1890
dbus.Int64(
1891
# This is specific to GNU libC
1892
(exitstatus << 8)
1893
| self.last_checker_signal),
808
dbus.Int64(condition),
1894
809
dbus.String(command))
1895
return ret
1896
810
811
return Client.checker_callback(self, pid, condition, command,
812
*args, **kwargs)
813
814
def checked_ok(self, *args, **kwargs):
815
r = Client.checked_ok(self, *args, **kwargs)
816
# Emit D-Bus signal
817
self.PropertyChanged(
818
dbus.String(u"LastCheckedOK"),
819
(self._datetime_to_dbus(self.last_checked_ok,
820
variant_level=1)))
821
return r
822
823
def need_approval(self, *args, **kwargs):
824
r = Client.need_approval(self, *args, **kwargs)
825
# Emit D-Bus signal
826
self.PropertyChanged(
827
dbus.String(u"LastApprovalRequest"),
828
(self._datetime_to_dbus(self.last_approval_request,
829
variant_level=1)))
830
return r
831
1897
832
def start_checker(self, *args, **kwargs):
1898
old_checker_pid = getattr(self.checker, "pid", None)
833
old_checker = self.checker
834
if self.checker is not None:
835
old_checker_pid = self.checker.pid
836
else:
837
old_checker_pid = None
1899
838
r = Client.start_checker(self, *args, **kwargs)
1900
839
# Only if new checker process was started
1901
840
if (self.checker is not None
1902
841
and old_checker_pid != self.checker.pid):
1903
842
# Emit D-Bus signal
1904
843
self.CheckerStarted(self.current_checker_command)
844
self.PropertyChanged(
845
dbus.String(u"CheckerRunning"),
846
dbus.Boolean(True, variant_level=1))
847
return r
848
849
def stop_checker(self, *args, **kwargs):
850
old_checker = getattr(self, u"checker", None)
851
r = Client.stop_checker(self, *args, **kwargs)
852
if (old_checker is not None
853
and getattr(self, u"checker", None) is None):
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
855
dbus.Boolean(False, variant_level=1))
1905
856
return r
1906
857
1907
858
def _reset_approved(self):
1908
self.approved = None
859
self._approved = None
1909
860
return False
1910
861
1911
862
def approve(self, value=True):
1912
self.approved = value
1913
GLib.timeout_add(int(self.approval_duration.total_seconds()
1914
* 1000), self._reset_approved)
1915
863
self.send_changedstate()
1916
1917
# D-Bus methods, signals & properties
1918
1919
# Interfaces
1920
1921
# Signals
1922
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
866
(self.approval_duration),
867
self._reset_approved)
868
869
870
## D-Bus methods, signals & properties
871
_interface = u"se.bsnet.fukt.Mandos.Client"
872
873
## Signals
874
1923
875
# CheckerCompleted - signal
1924
@dbus.service.signal(_interface, signature="nxs")
876
@dbus.service.signal(_interface, signature=u"nxs")
1925
877
def CheckerCompleted(self, exitcode, waitstatus, command):
1926
878
"D-Bus signal"
1927
879
pass
1928
880
1929
881
# CheckerStarted - signal
1930
@dbus.service.signal(_interface, signature="s")
882
@dbus.service.signal(_interface, signature=u"s")
1931
883
def CheckerStarted(self, command):
1932
884
"D-Bus signal"
1933
885
pass
1934
886
1935
887
# PropertyChanged - signal
1936
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1937
@dbus.service.signal(_interface, signature="sv")
888
@dbus.service.signal(_interface, signature=u"sv")
1938
889
def PropertyChanged(self, property, value):
1939
890
"D-Bus signal"
1940
891
pass
1941
892
1942
893
# GotSecret - signal
1943
894
@dbus.service.signal(_interface)
1944
895
def GotSecret(self):
1947
898
server to mandos-client
1948
899
"""
1949
900
pass
1950
901
1951
902
# Rejected - signal
1952
@dbus.service.signal(_interface, signature="s")
903
@dbus.service.signal(_interface, signature=u"s")
1953
904
def Rejected(self, reason):
1954
905
"D-Bus signal"
1955
906
pass
1956
907
1957
908
# NeedApproval - signal
1958
@dbus.service.signal(_interface, signature="tb")
909
@dbus.service.signal(_interface, signature=u"tb")
1959
910
def NeedApproval(self, timeout, default):
1960
911
"D-Bus signal"
1961
912
return self.need_approval()
1962
1963
# Methods
1964
913
914
## Methods
915
1965
916
# Approve - method
1966
@dbus.service.method(_interface, in_signature="b")
917
@dbus.service.method(_interface, in_signature=u"b")
1967
918
def Approve(self, value):
1968
919
self.approve(value)
1969
920
1970
921
# CheckedOK - method
1971
922
@dbus.service.method(_interface)
1972
923
def CheckedOK(self):
1973
self.checked_ok()
1974
924
return self.checked_ok()
925
1975
926
# Enable - method
1976
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1977
927
@dbus.service.method(_interface)
1978
928
def Enable(self):
1979
929
"D-Bus method"
1980
930
self.enable()
1981
931
1982
932
# StartChecker - method
1983
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1984
933
@dbus.service.method(_interface)
1985
934
def StartChecker(self):
1986
935
"D-Bus method"
1987
936
self.start_checker()
1988
937
1989
938
# Disable - method
1990
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1991
939
@dbus.service.method(_interface)
1992
940
def Disable(self):
1993
941
"D-Bus method"
1994
942
self.disable()
1995
943
1996
944
# StopChecker - method
1997
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1998
945
@dbus.service.method(_interface)
1999
946
def StopChecker(self):
2000
947
self.stop_checker()
2001
2002
# Properties
2003
948
949
## Properties
950
2004
951
# ApprovalPending - property
2005
@dbus_service_property(_interface, signature="b", access="read")
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
2006
953
def ApprovalPending_dbus_property(self):
2007
954
return dbus.Boolean(bool(self.approvals_pending))
2008
955
2009
956
# ApprovedByDefault - property
2010
@dbus_service_property(_interface,
2011
signature="b",
2012
access="readwrite")
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
2013
959
def ApprovedByDefault_dbus_property(self, value=None):
2014
960
if value is None: # get
2015
961
return dbus.Boolean(self.approved_by_default)
2016
962
self.approved_by_default = bool(value)
2017
963
# Emit D-Bus signal
964
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
dbus.Boolean(value, variant_level=1))
966
2018
967
# ApprovalDelay - property
2019
@dbus_service_property(_interface,
2020
signature="t",
2021
access="readwrite")
968
@dbus_service_property(_interface, signature=u"t",
969
access=u"readwrite")
2022
970
def ApprovalDelay_dbus_property(self, value=None):
2023
971
if value is None: # get
2024
return dbus.UInt64(self.approval_delay.total_seconds()
2025
* 1000)
972
return dbus.UInt64(self.approval_delay_milliseconds())
2026
973
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2027
974
# Emit D-Bus signal
975
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
dbus.UInt64(value, variant_level=1))
977
2028
978
# ApprovalDuration - property
2029
@dbus_service_property(_interface,
2030
signature="t",
2031
access="readwrite")
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
2032
981
def ApprovalDuration_dbus_property(self, value=None):
2033
982
if value is None: # get
2034
return dbus.UInt64(self.approval_duration.total_seconds()
2035
* 1000)
983
return dbus.UInt64(self._timedelta_to_milliseconds(
984
self.approval_duration))
2036
985
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2037
986
# Emit D-Bus signal
987
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
dbus.UInt64(value, variant_level=1))
989
2038
990
# Name - property
2039
@dbus_annotations(
2040
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2041
@dbus_service_property(_interface, signature="s", access="read")
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
2042
992
def Name_dbus_property(self):
2043
993
return dbus.String(self.name)
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
994
2052
995
# Fingerprint - property
2053
@dbus_annotations(
2054
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2055
@dbus_service_property(_interface, signature="s", access="read")
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
2056
997
def Fingerprint_dbus_property(self):
2057
998
return dbus.String(self.fingerprint)
2058
999
2059
1000
# Host - property
2060
@dbus_service_property(_interface,
2061
signature="s",
2062
access="readwrite")
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
2063
1003
def Host_dbus_property(self, value=None):
2064
1004
if value is None: # get
2065
1005
return dbus.String(self.host)
2066
self.host = str(value)
2067
1006
self.host = value
1007
# Emit D-Bus signal
1008
self.PropertyChanged(dbus.String(u"Host"),
1009
dbus.String(value, variant_level=1))
1010
2068
1011
# Created - property
2069
@dbus_annotations(
2070
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2071
@dbus_service_property(_interface, signature="s", access="read")
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
2072
1013
def Created_dbus_property(self):
2073
return datetime_to_dbus(self.created)
2074
1014
return dbus.String(self._datetime_to_dbus(self.created))
1015
2075
1016
# LastEnabled - property
2076
@dbus_service_property(_interface, signature="s", access="read")
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
2077
1018
def LastEnabled_dbus_property(self):
2078
return datetime_to_dbus(self.last_enabled)
2079
1019
if self.last_enabled is None:
1020
return dbus.String(u"")
1021
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1022
2080
1023
# Enabled - property
2081
@dbus_service_property(_interface,
2082
signature="b",
2083
access="readwrite")
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
2084
1026
def Enabled_dbus_property(self, value=None):
2085
1027
if value is None: # get
2086
1028
return dbus.Boolean(self.enabled)
2088
1030
self.enable()
2089
1031
else:
2090
1032
self.disable()
2091
1033
2092
1034
# LastCheckedOK - property
2093
@dbus_service_property(_interface,
2094
signature="s",
2095
access="readwrite")
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
2096
1037
def LastCheckedOK_dbus_property(self, value=None):
2097
1038
if value is not None:
2098
1039
self.checked_ok()
2099
1040
return
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
1041
if self.last_checked_ok is None:
1042
return dbus.String(u"")
1043
return dbus.String(self._datetime_to_dbus(self
1044
.last_checked_ok))
1045
2112
1046
# LastApprovalRequest - property
2113
@dbus_service_property(_interface, signature="s", access="read")
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
2114
1048
def LastApprovalRequest_dbus_property(self):
2115
return datetime_to_dbus(self.last_approval_request)
2116
1049
if self.last_approval_request is None:
1050
return dbus.String(u"")
1051
return dbus.String(self.
1052
_datetime_to_dbus(self
1053
.last_approval_request))
1054
2117
1055
# Timeout - property
2118
@dbus_service_property(_interface,
2119
signature="t",
2120
access="readwrite")
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
2121
1058
def Timeout_dbus_property(self, value=None):
2122
1059
if value is None: # get
2123
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2124
old_timeout = self.timeout
1060
return dbus.UInt64(self.timeout_milliseconds())
2125
1061
self.timeout = datetime.timedelta(0, 0, 0, value)
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
1062
# Emit D-Bus signal
1063
self.PropertyChanged(dbus.String(u"Timeout"),
1064
dbus.UInt64(value, variant_level=1))
1065
if getattr(self, u"disable_initiator_tag", None) is None:
1066
return
1067
# Reschedule timeout
1068
gobject.source_remove(self.disable_initiator_tag)
1069
self.disable_initiator_tag = None
1070
time_to_die = (self.
1071
_timedelta_to_milliseconds((self
1072
.last_checked_ok
1073
+ self.timeout)
1074
- datetime.datetime
1075
.utcnow()))
1076
if time_to_die <= 0:
1077
# The timeout has passed
1078
self.disable()
1079
else:
1080
self.disable_initiator_tag = (gobject.timeout_add
1081
(time_to_die, self.disable))
1082
2152
1083
# Interval - property
2153
@dbus_service_property(_interface,
2154
signature="t",
2155
access="readwrite")
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
2156
1086
def Interval_dbus_property(self, value=None):
2157
1087
if value is None: # get
2158
return dbus.UInt64(self.interval.total_seconds() * 1000)
1088
return dbus.UInt64(self.interval_milliseconds())
2159
1089
self.interval = datetime.timedelta(0, 0, 0, value)
2160
if getattr(self, "checker_initiator_tag", None) is None:
1090
# Emit D-Bus signal
1091
self.PropertyChanged(dbus.String(u"Interval"),
1092
dbus.UInt64(value, variant_level=1))
1093
if getattr(self, u"checker_initiator_tag", None) is None:
2161
1094
return
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
1095
# Reschedule checker run
1096
gobject.source_remove(self.checker_initiator_tag)
1097
self.checker_initiator_tag = (gobject.timeout_add
1098
(value, self.start_checker))
1099
self.start_checker() # Start one now, too
2168
1100
2169
1101
# Checker - property
2170
@dbus_service_property(_interface,
2171
signature="s",
2172
access="readwrite")
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
2173
1104
def Checker_dbus_property(self, value=None):
2174
1105
if value is None: # get
2175
1106
return dbus.String(self.checker_command)
2176
self.checker_command = str(value)
2177
1107
self.checker_command = value
1108
# Emit D-Bus signal
1109
self.PropertyChanged(dbus.String(u"Checker"),
1110
dbus.String(self.checker_command,
1111
variant_level=1))
1112
2178
1113
# CheckerRunning - property
2179
@dbus_service_property(_interface,
2180
signature="b",
2181
access="readwrite")
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
2182
1116
def CheckerRunning_dbus_property(self, value=None):
2183
1117
if value is None: # get
2184
1118
return dbus.Boolean(self.checker is not None)
2186
1120
self.start_checker()
2187
1121
else:
2188
1122
self.stop_checker()
2189
1123
2190
1124
# ObjectPath - property
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")
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
2195
1126
def ObjectPath_dbus_property(self):
2196
return self.dbus_object_path # is already a dbus.ObjectPath
2197
1127
return self.dbus_object_path # is already a dbus.ObjectPath
1128
2198
1129
# Secret = property
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)
1130
@dbus_service_property(_interface, signature=u"ay",
1131
access=u"write", byte_arrays=True)
2206
1132
def Secret_dbus_property(self, value):
2207
self.secret = bytes(value)
2208
1133
self.secret = str(value)
1134
2209
1135
del _interface
2210
1136
2211
1137
2212
1138
class ProxyClient(object):
2213
def __init__(self, child_pipe, key_id, fpr, address):
1139
def __init__(self, child_pipe, fpr, address):
2214
1140
self._pipe = child_pipe
2215
self._pipe.send(('init', key_id, fpr, address))
1141
self._pipe.send(('init', fpr, address))
2216
1142
if not self._pipe.recv():
2217
raise KeyError(key_id or fpr)
1143
raise KeyError()
2218
1144
2219
1145
def __getattribute__(self, name):
2220
if name == '_pipe':
1146
if(name == '_pipe'):
2221
1147
return super(ProxyClient, self).__getattribute__(name)
2222
1148
self._pipe.send(('getattr', name))
2223
1149
data = self._pipe.recv()
2224
1150
if data[0] == 'data':
2225
1151
return data[1]
2226
1152
if data[0] == 'function':
2227
2228
1153
def func(*args, **kwargs):
2229
1154
self._pipe.send(('funcall', name, args, kwargs))
2230
1155
return self._pipe.recv()[1]
2231
2232
1156
return func
2233
1157
2234
1158
def __setattr__(self, name, value):
2235
if name == '_pipe':
1159
if(name == '_pipe'):
2236
1160
return super(ProxyClient, self).__setattr__(name, value)
2237
1161
self._pipe.send(('setattr', name, value))
2238
1162
2239
1163
2240
1164
class ClientHandler(socketserver.BaseRequestHandler, object):
2241
1165
"""A class to handle client connections.
2242
1166
2243
1167
Instantiated once for each connection to handle it.
2244
1168
Note: This will run in its own forked process."""
2245
1169
2246
1170
def handle(self):
2247
1171
with contextlib.closing(self.server.child_pipe) as child_pipe:
2248
logger.info("TCP connection from: %s",
2249
str(self.client_address))
2250
logger.debug("Pipe FD: %d",
1172
logger.info(u"TCP connection from: %s",
1173
unicode(self.client_address))
1174
logger.debug(u"Pipe FD: %d",
2251
1175
self.server.child_pipe.fileno())
2252
1176
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"))
1177
session = (gnutls.connection
1178
.ClientSession(self.request,
1179
gnutls.connection
1180
.X509Credentials()))
1181
1182
# Note: gnutls.connection.X509Credentials is really a
1183
# generic GnuTLS certificate credentials object so long as
1184
# no X.509 keys are added to it. Therefore, we can use it
1185
# here despite using OpenPGP certificates.
1186
1187
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1188
# u"+AES-256-CBC", u"+SHA1",
1189
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1190
# u"+DHE-DSS"))
2259
1191
# Use a fallback default, since this MUST be set.
2260
1192
priority = self.server.gnutls_priority
2261
1193
if priority is None:
2262
priority = "NORMAL"
2263
gnutls.priority_set_direct(session._c_object,
2264
priority.encode("utf-8"),
2265
None)
1194
priority = u"NORMAL"
1195
(gnutls.library.functions
1196
.gnutls_priority_set_direct(session._c_object,
1197
priority, None))
2266
1198
2267
1199
# Start communication using the Mandos protocol
2268
1200
# Get protocol number
2269
1201
line = self.request.makefile().readline()
2270
logger.debug("Protocol version: %r", line)
1202
logger.debug(u"Protocol version: %r", line)
2271
1203
try:
2272
1204
if int(line.strip().split()[0]) > 1:
2273
raise RuntimeError(line)
2274
except (ValueError, IndexError, RuntimeError) as error:
2275
logger.error("Unknown protocol version: %s", error)
1205
raise RuntimeError
1206
except (ValueError, IndexError, RuntimeError), error:
1207
logger.error(u"Unknown protocol version: %s", error)
2276
1208
return
2277
1209
2278
1210
# Start GnuTLS connection
2279
1211
try:
2280
1212
session.handshake()
2281
except gnutls.Error as error:
2282
logger.warning("Handshake failed: %s", error)
1213
except gnutls.errors.GNUTLSError, error:
1214
logger.warning(u"Handshake failed: %s", error)
2283
1215
# Do not run session.bye() here: the session is not
2284
1216
# established. Just abandon the request.
2285
1217
return
2286
logger.debug("Handshake succeeded")
1218
logger.debug(u"Handshake succeeded")
2287
1219
2288
1220
approval_required = False
2289
1221
try:
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,
1222
try:
1223
fpr = self.fingerprint(self.peer_certificate
1224
(session))
1225
except (TypeError, gnutls.errors.GNUTLSError), error:
1226
logger.warning(u"Bad certificate: %s", error)
1227
return
1228
logger.debug(u"Fingerprint: %s", fpr)
1229
1230
try:
1231
client = ProxyClient(child_pipe, fpr,
2312
1232
self.client_address)
2313
1233
except KeyError:
2314
1234
return
2315
1235
2316
1236
if client.approval_delay:
2317
1237
delay = client.approval_delay
2318
1238
client.approvals_pending += 1
2319
1239
approval_required = True
2320
1240
2321
1241
while True:
2322
1242
if not client.enabled:
2323
logger.info("Client %s is disabled",
2324
client.name)
1243
logger.warning(u"Client %s is disabled",
1244
client.name)
2325
1245
if self.server.use_dbus:
2326
1246
# Emit D-Bus signal
2327
client.Rejected("Disabled")
1247
client.Rejected("Disabled")
2328
1248
return
2329
2330
if client.approved or not client.approval_delay:
2331
# We are approved or approval is disabled
1249
1250
if client._approved or not client.approval_delay:
1251
#We are approved or approval is disabled
2332
1252
break
2333
elif client.approved is None:
2334
logger.info("Client %s needs approval",
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
2335
1255
client.name)
2336
1256
if self.server.use_dbus:
2337
1257
# Emit D-Bus signal
2338
1258
client.NeedApproval(
2339
client.approval_delay.total_seconds()
2340
* 1000, client.approved_by_default)
1259
client.approval_delay_milliseconds(),
1260
client.approved_by_default)
2341
1261
else:
2342
logger.warning("Client %s was not approved",
1262
logger.warning(u"Client %s was not approved",
2343
1263
client.name)
2344
1264
if self.server.use_dbus:
2345
1265
# Emit D-Bus signal
2346
1266
client.Rejected("Denied")
2347
1267
return
2348
2349
# wait until timeout or approved
1268
1269
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
2350
1271
time = datetime.datetime.now()
2351
1272
client.changedstate.acquire()
2352
client.changedstate.wait(delay.total_seconds())
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2353
1274
client.changedstate.release()
2354
1275
time2 = datetime.datetime.now()
2355
1276
if (time2 - time) >= delay:
2365
1286
break
2366
1287
else:
2367
1288
delay -= time2 - time
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)
1289
1290
sent_size = 0
1291
while sent_size < len(client.secret):
1292
try:
1293
sent = session.send(client.secret[sent_size:])
1294
except (gnutls.errors.GNUTLSError), error:
1295
logger.warning("gnutls send failed")
1296
return
1297
logger.debug(u"Sent: %d, remaining: %d",
1298
sent, len(client.secret)
1299
- (sent_size + sent))
1300
sent_size += sent
1301
1302
logger.info(u"Sending secret to %s", client.name)
1303
# bump the timeout as if seen
1304
client.checked_ok()
2379
1305
if self.server.use_dbus:
2380
1306
# Emit D-Bus signal
2381
1307
client.GotSecret()
2382
1308
2383
1309
finally:
2384
1310
if approval_required:
2385
1311
client.approvals_pending -= 1
2386
1312
try:
2387
1313
session.bye()
2388
except gnutls.Error as error:
2389
logger.warning("GnuTLS bye failed",
2390
exc_info=error)
2391
1314
except (gnutls.errors.GNUTLSError), error:
1315
logger.warning("GnuTLS bye failed")
1316
2392
1317
@staticmethod
2393
1318
def peer_certificate(session):
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""
1319
"Return the peer's OpenPGP certificate as a bytestring"
1320
# If not an OpenPGP certificate...
1321
if (gnutls.library.functions
1322
.gnutls_certificate_type_get(session._c_object)
1323
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1324
# ...do the normal thing
1325
return session.peer_certificate
2410
1326
list_size = ctypes.c_uint(1)
2411
cert_list = (gnutls.certificate_get_peers
1327
cert_list = (gnutls.library.functions
1328
.gnutls_certificate_get_peers
2412
1329
(session._c_object, ctypes.byref(list_size)))
2413
1330
if not bool(cert_list) and list_size.value != 0:
2414
raise gnutls.Error("error getting peer certificate")
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
2415
1333
if list_size.value == 0:
2416
1334
return None
2417
1335
cert = cert_list[0]
2418
1336
return ctypes.string_at(cert.data, cert.size)
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
1337
2454
1338
@staticmethod
2455
1339
def fingerprint(openpgp):
2456
1340
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2457
1341
# New GnuTLS "datum" with the OpenPGP public key
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)))
1342
datum = (gnutls.library.types
1343
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1344
ctypes.POINTER
1345
(ctypes.c_ubyte)),
1346
ctypes.c_uint(len(openpgp))))
2462
1347
# New empty GnuTLS certificate
2463
crt = gnutls.openpgp_crt_t()
2464
gnutls.openpgp_crt_init(ctypes.byref(crt))
1348
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1349
(gnutls.library.functions
1350
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2465
1351
# Import the OpenPGP public key into the certificate
2466
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2467
gnutls.OPENPGP_FMT_RAW)
1352
(gnutls.library.functions
1353
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1354
gnutls.library.constants
1355
.GNUTLS_OPENPGP_FMT_RAW))
2468
1356
# Verify the self signature in the key
2469
1357
crtverify = ctypes.c_uint()
2470
gnutls.openpgp_crt_verify_self(crt, 0,
2471
ctypes.byref(crtverify))
1358
(gnutls.library.functions
1359
.gnutls_openpgp_crt_verify_self(crt, 0,
1360
ctypes.byref(crtverify)))
2472
1361
if crtverify.value != 0:
2473
gnutls.openpgp_crt_deinit(crt)
2474
raise gnutls.CertificateSecurityError(code
2475
=crtverify.value)
1362
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1363
raise (gnutls.errors.CertificateSecurityError
1364
(u"Verify failed"))
2476
1365
# New buffer for the fingerprint
2477
1366
buf = ctypes.create_string_buffer(20)
2478
1367
buf_len = ctypes.c_size_t()
2479
1368
# Get the fingerprint from the certificate into the buffer
2480
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2481
ctypes.byref(buf_len))
1369
(gnutls.library.functions
1370
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1371
ctypes.byref(buf_len)))
2482
1372
# Deinit the certificate
2483
gnutls.openpgp_crt_deinit(crt)
1373
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2484
1374
# Convert the buffer to a Python bytestring
2485
1375
fpr = ctypes.string_at(buf, buf_len.value)
2486
1376
# Convert the bytestring to hexadecimal notation
2487
hex_fpr = binascii.hexlify(fpr).upper()
1377
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2488
1378
return hex_fpr
2489
1379
2490
1380
2491
1381
class MultiprocessingMixIn(object):
2492
1382
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2493
2494
1383
def sub_process_main(self, request, address):
2495
1384
try:
2496
1385
self.finish_request(request, address)
2497
except Exception:
1386
except:
2498
1387
self.handle_error(request, address)
2499
1388
self.close_request(request)
2500
1389
2501
1390
def process_request(self, request, address):
2502
1391
"""Start a new process to process the request."""
2503
proc = multiprocessing.Process(target=self.sub_process_main,
2504
args=(request, address))
2505
proc.start()
2506
return proc
2507
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
2508
1394
2509
1395
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2510
1396
""" adds a pipe to the MixIn """
2511
2512
1397
def process_request(self, request, client_address):
2513
1398
"""Overrides and wraps the original process_request().
2514
1399
2515
1400
This function creates a new pipe in self.pipe
2516
1401
"""
2517
1402
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2518
1403
2519
proc = MultiprocessingMixIn.process_request(self, request,
2520
client_address)
1404
super(MultiprocessingMixInWithPipe,
1405
self).process_request(request, client_address)
2521
1406
self.child_pipe.close()
2522
self.add_pipe(parent_pipe, proc)
1407
self.add_pipe(parent_pipe)
2523
1408
2524
def add_pipe(self, parent_pipe, proc):
1409
def add_pipe(self, parent_pipe):
2525
1410
"""Dummy function; override as necessary"""
2526
raise NotImplementedError()
2527
1411
pass
2528
1412
2529
1413
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2530
1414
socketserver.TCPServer, object):
2531
1415
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2532
1416
2533
1417
Attributes:
2534
1418
enabled: Boolean; whether this server is activated yet
2535
1419
interface: None or a network interface name (string)
2536
1420
use_ipv6: Boolean; to use IPv6 or not
2537
1421
"""
2538
2539
1422
def __init__(self, server_address, RequestHandlerClass,
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
"""
1423
interface=None, use_ipv6=True):
2546
1424
self.interface = interface
2547
1425
if use_ipv6:
2548
1426
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.
2576
1427
socketserver.TCPServer.__init__(self, server_address,
2577
1428
RequestHandlerClass)
2578
2579
1429
def server_bind(self):
2580
1430
"""This overrides the normal server_bind() function
2581
1431
to bind to an interface if one was specified, and also NOT to
2582
1432
bind to an address or port if they were not specified."""
2583
global SO_BINDTODEVICE
2584
1433
if self.interface is not None:
2585
1434
if SO_BINDTODEVICE is None:
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
1435
logger.error(u"SO_BINDTODEVICE does not exist;"
1436
u" cannot bind to interface %s",
1437
self.interface)
1438
else:
1439
try:
1440
self.socket.setsockopt(socket.SOL_SOCKET,
1441
SO_BINDTODEVICE,
1442
str(self.interface
1443
+ u'\0'))
1444
except socket.error, error:
1445
if error[0] == errno.EPERM:
1446
logger.error(u"No permission to"
1447
u" bind to interface %s",
1448
self.interface)
1449
elif error[0] == errno.ENOPROTOOPT:
1450
logger.error(u"SO_BINDTODEVICE not available;"
1451
u" cannot bind to interface %s",
1452
self.interface)
1453
else:
1454
raise
2607
1455
# Only bind(2) the socket if we really need to.
2608
1456
if self.server_address[0] or self.server_address[1]:
2609
if self.server_address[1]:
2610
self.allow_reuse_address = True
2611
1457
if not self.server_address[0]:
2612
1458
if self.address_family == socket.AF_INET6:
2613
any_address = "::" # in6addr_any
1459
any_address = u"::" # in6addr_any
2614
1460
else:
2615
any_address = "0.0.0.0" # INADDR_ANY
1461
any_address = socket.INADDR_ANY
2616
1462
self.server_address = (any_address,
2617
1463
self.server_address[1])
2618
1464
elif not self.server_address[1]:
2619
self.server_address = (self.server_address[0], 0)
1465
self.server_address = (self.server_address[0],
1466
0)
2620
1467
# if self.interface:
2621
1468
# self.server_address = (self.server_address[0],
2622
1469
# 0, # port
2628
1475
2629
1476
class MandosServer(IPv6_TCPServer):
2630
1477
"""Mandos server.
2631
1478
2632
1479
Attributes:
2633
1480
clients: set of Client objects
2634
1481
gnutls_priority GnuTLS priority string
2635
1482
use_dbus: Boolean; to emit D-Bus signals or not
2636
2637
Assumes a GLib.MainLoop event loop.
1483
1484
Assumes a gobject.MainLoop event loop.
2638
1485
"""
2639
2640
1486
def __init__(self, server_address, RequestHandlerClass,
2641
interface=None,
2642
use_ipv6=True,
2643
clients=None,
2644
gnutls_priority=None,
2645
use_dbus=True,
2646
socketfd=None):
1487
interface=None, use_ipv6=True, clients=None,
1488
gnutls_priority=None, use_dbus=True):
2647
1489
self.enabled = False
2648
1490
self.clients = clients
2649
1491
if self.clients is None:
2650
self.clients = {}
1492
self.clients = set()
2651
1493
self.use_dbus = use_dbus
2652
1494
self.gnutls_priority = gnutls_priority
2653
1495
IPv6_TCPServer.__init__(self, server_address,
2654
1496
RequestHandlerClass,
2655
interface=interface,
2656
use_ipv6=use_ipv6,
2657
socketfd=socketfd)
2658
1497
interface = interface,
1498
use_ipv6 = use_ipv6)
2659
1499
def server_activate(self):
2660
1500
if self.enabled:
2661
1501
return socketserver.TCPServer.server_activate(self)
2662
2663
1502
def enable(self):
2664
1503
self.enabled = True
2665
2666
def add_pipe(self, parent_pipe, proc):
1504
def add_pipe(self, parent_pipe):
2667
1505
# Call "handle_ipc" for both data and EOF events
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,
1506
gobject.io_add_watch(parent_pipe.fileno(),
1507
gobject.IO_IN | gobject.IO_HUP,
1508
functools.partial(self.handle_ipc,
1509
parent_pipe = parent_pipe))
1510
1511
def handle_ipc(self, source, condition, parent_pipe=None,
2678
1512
client_object=None):
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()
1513
condition_names = {
1514
gobject.IO_IN: u"IN", # There is data to read.
1515
gobject.IO_OUT: u"OUT", # Data can be written (without
1516
# blocking).
1517
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1518
gobject.IO_ERR: u"ERR", # Error condition.
1519
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1520
# broken, usually for pipes and
1521
# sockets).
1522
}
1523
conditions_string = ' | '.join(name
1524
for cond, name in
1525
condition_names.iteritems()
1526
if cond & condition)
1527
# error or the other end of multiprocessing.Pipe has closed
1528
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2683
1529
return False
2684
1530
2685
1531
# Read a request from the child
2686
1532
request = parent_pipe.recv()
2687
1533
command = request[0]
2688
1534
2689
1535
if command == 'init':
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:
1536
fpr = request[1]
1537
address = request[2]
1538
1539
for c in self.clients:
1540
if c.fingerprint == fpr:
2701
1541
client = c
2702
1542
break
2703
1543
else:
2704
logger.info("Client not found for key ID: %s, address"
2705
": %s", key_id or fpr, address)
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
2706
1546
if self.use_dbus:
2707
1547
# Emit D-Bus signal
2708
mandos_dbus_service.ClientNotFound(key_id or fpr,
2709
address[0])
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
2710
1549
parent_pipe.send(False)
2711
1550
return False
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))
1551
1552
gobject.io_add_watch(parent_pipe.fileno(),
1553
gobject.IO_IN | gobject.IO_HUP,
1554
functools.partial(self.handle_ipc,
1555
parent_pipe = parent_pipe,
1556
client_object = client))
2720
1557
parent_pipe.send(True)
2721
# remove the old hook in favor of the new above hook on
2722
# same fileno
1558
# remove the old hook in favor of the new above hook on same fileno
2723
1559
return False
2724
1560
if command == 'funcall':
2725
1561
funcname = request[1]
2726
1562
args = request[2]
2727
1563
kwargs = request[3]
2728
2729
parent_pipe.send(('data', getattr(client_object,
2730
funcname)(*args,
2731
**kwargs)))
1564
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2732
1566
2733
1567
if command == 'getattr':
2734
1568
attrname = request[1]
2735
if isinstance(client_object.__getattribute__(attrname),
2736
collections.Callable):
2737
parent_pipe.send(('function', ))
1569
if callable(client_object.__getattribute__(attrname)):
1570
parent_pipe.send(('function',))
2738
1571
else:
2739
parent_pipe.send((
2740
'data', client_object.__getattribute__(attrname)))
2741
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1573
2742
1574
if command == 'setattr':
2743
1575
attrname = request[1]
2744
1576
value = request[2]
2747
1579
return True
2748
1580
2749
1581
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
2849
1582
def string_to_delta(interval):
2850
1583
"""Parse a string and return a datetime.timedelta
2851
2852
>>> string_to_delta('7d')
1584
1585
>>> string_to_delta(u'7d')
2853
1586
datetime.timedelta(7)
2854
>>> string_to_delta('60s')
1587
>>> string_to_delta(u'60s')
2855
1588
datetime.timedelta(0, 60)
2856
>>> string_to_delta('60m')
1589
>>> string_to_delta(u'60m')
2857
1590
datetime.timedelta(0, 3600)
2858
>>> string_to_delta('24h')
1591
>>> string_to_delta(u'24h')
2859
1592
datetime.timedelta(1)
2860
>>> string_to_delta('1w')
1593
>>> string_to_delta(u'1w')
2861
1594
datetime.timedelta(7)
2862
>>> string_to_delta('5m 30s')
1595
>>> string_to_delta(u'5m 30s')
2863
1596
datetime.timedelta(0, 330)
2864
1597
"""
2865
2866
try:
2867
return rfc3339_duration_to_delta(interval)
2868
except ValueError:
2869
pass
2870
2871
1598
timevalue = datetime.timedelta(0)
2872
1599
for s in interval.split():
2873
1600
try:
2874
suffix = s[-1]
1601
suffix = unicode(s[-1])
2875
1602
value = int(s[:-1])
2876
if suffix == "d":
1603
if suffix == u"d":
2877
1604
delta = datetime.timedelta(value)
2878
elif suffix == "s":
1605
elif suffix == u"s":
2879
1606
delta = datetime.timedelta(0, value)
2880
elif suffix == "m":
1607
elif suffix == u"m":
2881
1608
delta = datetime.timedelta(0, 0, 0, 0, value)
2882
elif suffix == "h":
1609
elif suffix == u"h":
2883
1610
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2884
elif suffix == "w":
1611
elif suffix == u"w":
2885
1612
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2886
1613
else:
2887
raise ValueError("Unknown suffix {!r}".format(suffix))
2888
except IndexError as e:
2889
raise ValueError(*(e.args))
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
2890
1617
timevalue += delta
2891
1618
return timevalue
2892
1619
2893
1620
2894
def daemon(nochdir=False, noclose=False):
1621
def if_nametoindex(interface):
1622
"""Call the C function if_nametoindex(), or equivalent
1623
1624
Note: This function cannot accept a unicode string."""
1625
global if_nametoindex
1626
try:
1627
if_nametoindex = (ctypes.cdll.LoadLibrary
1628
(ctypes.util.find_library(u"c"))
1629
.if_nametoindex)
1630
except (OSError, AttributeError):
1631
logger.warning(u"Doing if_nametoindex the hard way")
1632
def if_nametoindex(interface):
1633
"Get an interface index the hard way, i.e. using fcntl()"
1634
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1635
with contextlib.closing(socket.socket()) as s:
1636
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1637
struct.pack(str(u"16s16x"),
1638
interface))
1639
interface_index = struct.unpack(str(u"I"),
1640
ifreq[16:20])[0]
1641
return interface_index
1642
return if_nametoindex(interface)
1643
1644
1645
def daemon(nochdir = False, noclose = False):
2895
1646
"""See daemon(3). Standard BSD Unix function.
2896
1647
2897
1648
This should really exist as os.daemon, but it doesn't (yet)."""
2898
1649
if os.fork():
2899
1650
sys.exit()
2900
1651
os.setsid()
2901
1652
if not nochdir:
2902
os.chdir("/")
1653
os.chdir(u"/")
2903
1654
if os.fork():
2904
1655
sys.exit()
2905
1656
if not noclose:
2906
1657
# Close all standard open file descriptors
2907
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1658
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2908
1659
if not stat.S_ISCHR(os.fstat(null).st_mode):
2909
1660
raise OSError(errno.ENODEV,
2910
"{} not a character device"
2911
.format(os.devnull))
1661
u"%s not a character device"
1662
% os.path.devnull)
2912
1663
os.dup2(null, sys.stdin.fileno())
2913
1664
os.dup2(null, sys.stdout.fileno())
2914
1665
os.dup2(null, sys.stderr.fileno())
2917
1668
2918
1669
2919
1670
def main():
2920
1671
2921
1672
##################################################################
2922
1673
# Parsing of options, both command line and config file
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
1674
1675
parser = optparse.OptionParser(version = "%%prog %s" % version)
1676
parser.add_option("-i", u"--interface", type=u"string",
1677
metavar="IF", help=u"Bind to interface IF")
1678
parser.add_option("-a", u"--address", type=u"string",
1679
help=u"Address to listen for requests on")
1680
parser.add_option("-p", u"--port", type=u"int",
1681
help=u"Port number to receive requests on")
1682
parser.add_option("--check", action=u"store_true",
1683
help=u"Run self-test")
1684
parser.add_option("--debug", action=u"store_true",
1685
help=u"Debug mode; run in foreground and log to"
1686
u" terminal")
1687
parser.add_option("--debuglevel", type=u"string", metavar="LEVEL",
1688
help=u"Debug level for stdout output")
1689
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1690
u" priority string (see GnuTLS documentation)")
1691
parser.add_option("--servicename", type=u"string",
1692
metavar=u"NAME", help=u"Zeroconf service name")
1693
parser.add_option("--configdir", type=u"string",
1694
default=u"/etc/mandos", metavar=u"DIR",
1695
help=u"Directory to search for configuration"
1696
u" files")
1697
parser.add_option("--no-dbus", action=u"store_false",
1698
dest=u"use_dbus", help=u"Do not provide D-Bus"
1699
u" system bus interface")
1700
parser.add_option("--no-ipv6", action=u"store_false",
1701
dest=u"use_ipv6", help=u"Do not use IPv6")
1702
options = parser.parse_args()[0]
1703
2971
1704
if options.check:
2972
1705
import doctest
2973
fail_count, test_count = doctest.testmod()
2974
sys.exit(os.EX_OK if fail_count == 0 else 1)
2975
1706
doctest.testmod()
1707
sys.exit()
1708
2976
1709
# Default values for config file for server-global settings
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
1710
server_defaults = { u"interface": u"",
1711
u"address": u"",
1712
u"port": u"",
1713
u"debug": u"False",
1714
u"priority":
1715
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1716
u"servicename": u"Mandos",
1717
u"use_dbus": u"True",
1718
u"use_ipv6": u"True",
1719
u"debuglevel": u"",
1720
}
1721
3000
1722
# Parse config file for server-global settings
3001
1723
server_config = configparser.SafeConfigParser(server_defaults)
3002
1724
del server_defaults
3003
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1725
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
3004
1727
# Convert the SafeConfigParser object to a dict
3005
1728
server_settings = server_config.defaults()
3006
1729
# Use the appropriate methods on the non-string config options
3007
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3008
"foreground", "zeroconf"):
3009
server_settings[option] = server_config.getboolean("DEFAULT",
1730
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1731
server_settings[option] = server_config.getboolean(u"DEFAULT",
3010
1732
option)
3011
1733
if server_settings["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"])
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
3023
1736
del server_config
3024
1737
3025
1738
# Override the settings from the config file with command line
3026
1739
# options, if set.
3027
for option in ("interface", "address", "port", "debug",
3028
"priority", "servicename", "configdir", "use_dbus",
3029
"use_ipv6", "debuglevel", "restore", "statedir",
3030
"socket", "foreground", "zeroconf"):
1740
for option in (u"interface", u"address", u"port", u"debug",
1741
u"priority", u"servicename", u"configdir",
1742
u"use_dbus", u"use_ipv6", u"debuglevel"):
3031
1743
value = getattr(options, option)
3032
1744
if value is not None:
3033
1745
server_settings[option] = value
3034
1746
del options
3035
1747
# Force all strings to be unicode
3036
1748
for option in server_settings.keys():
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
1749
if type(server_settings[option]) is str:
1750
server_settings[option] = unicode(server_settings[option])
3047
1751
# Now we have our good server settings in "server_settings"
3048
1752
3049
1753
##################################################################
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
1754
3056
1755
# For convenience
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
1756
debug = server_settings[u"debug"]
1757
debuglevel = server_settings[u"debuglevel"]
1758
use_dbus = server_settings[u"use_dbus"]
1759
use_ipv6 = server_settings[u"use_ipv6"]
1760
1761
if server_settings[u"servicename"] != u"Mandos":
1762
syslogger.setFormatter(logging.Formatter
1763
(u'Mandos (%s) [%%(process)d]:'
1764
u' %%(levelname)s: %%(message)s'
1765
% server_settings[u"servicename"]))
1766
3081
1767
# Parse config file with clients
3082
client_config = configparser.SafeConfigParser(Client
3083
.client_defaults)
3084
client_config.read(os.path.join(server_settings["configdir"],
3085
"clients.conf"))
3086
1768
client_defaults = { u"timeout": u"1h",
1769
u"interval": u"5m",
1770
u"checker": u"fping -q -- %%(host)s",
1771
u"host": u"",
1772
u"approval_delay": u"0s",
1773
u"approval_duration": u"1s",
1774
}
1775
client_config = configparser.SafeConfigParser(client_defaults)
1776
client_config.read(os.path.join(server_settings[u"configdir"],
1777
u"clients.conf"))
1778
3087
1779
global mandos_dbus_service
3088
1780
mandos_dbus_service = None
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
1781
1782
tcp_server = MandosServer((server_settings[u"address"],
1783
server_settings[u"port"]),
1784
ClientHandler,
1785
interface=(server_settings[u"interface"]
1786
or None),
1787
use_ipv6=use_ipv6,
1788
gnutls_priority=
1789
server_settings[u"priority"],
1790
use_dbus=use_dbus)
1791
if not debug:
1792
pidfilename = u"/var/run/mandos.pid"
1793
try:
1794
pidfile = open(pidfilename, u"w")
1795
except IOError:
1796
logger.error(u"Could not open file %r", pidfilename)
1797
1798
try:
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
1801
except KeyError:
1802
try:
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
3119
1805
except KeyError:
3120
continue
3121
else:
3122
uid = 65534
3123
gid = 65534
1806
try:
1807
uid = pwd.getpwnam(u"nobody").pw_uid
1808
gid = pwd.getpwnam(u"nobody").pw_gid
1809
except KeyError:
1810
uid = 65534
1811
gid = 65534
3124
1812
try:
3125
1813
os.setgid(gid)
3126
1814
os.setuid(uid)
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
1815
except OSError, error:
1816
if error[0] != errno.EPERM:
1817
raise error
1818
1819
if not debug and not debuglevel:
1820
syslogger.setLevel(logging.WARNING)
1821
console.setLevel(logging.WARNING)
1822
if debuglevel:
1823
level = getattr(logging, debuglevel.upper())
1824
syslogger.setLevel(level)
1825
console.setLevel(level)
3135
1826
3136
1827
if debug:
3137
1828
# Enable all possible GnuTLS debugging
3138
1829
3139
1830
# "Use a log level over 10 to enable all debugging options."
3140
1831
# - GnuTLS manual
3141
gnutls.global_set_log_level(11)
3142
3143
@gnutls.log_func
1832
gnutls.library.functions.gnutls_global_set_log_level(11)
1833
1834
@gnutls.library.types.gnutls_log_func
3144
1835
def debug_gnutls(level, string):
3145
logger.debug("GnuTLS: %s", string[:-1])
3146
3147
gnutls.global_set_log_function(debug_gnutls)
3148
1836
logger.debug(u"GnuTLS: %s", string[:-1])
1837
1838
(gnutls.library.functions
1839
.gnutls_global_set_log_function(debug_gnutls))
1840
3149
1841
# Redirect stdin so all checkers get /dev/null
3150
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1842
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3151
1843
os.dup2(null, sys.stdin.fileno())
3152
1844
if null > 2:
3153
1845
os.close(null)
3154
1846
else:
1847
# No console logging
1848
logger.removeHandler(console)
1849
3155
1850
# Need to fork before connecting to D-Bus
3156
if not foreground:
1851
if not debug:
3157
1852
# Close all input and output, do double fork, etc.
3158
1853
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
1854
3164
1855
global main_loop
3165
1856
# From the Avahi example code
3166
DBusGMainLoop(set_as_default=True)
3167
main_loop = GLib.MainLoop()
1857
DBusGMainLoop(set_as_default=True )
1858
main_loop = gobject.MainLoop()
3168
1859
bus = dbus.SystemBus()
3169
1860
# End of Avahi example code
3170
1861
if use_dbus:
3171
1862
try:
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)
1863
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1864
bus, do_not_queue=True)
1865
except dbus.exceptions.NameExistsException, e:
1866
logger.error(unicode(e) + u", disabling D-Bus")
3180
1867
use_dbus = False
3181
server_settings["use_dbus"] = False
1868
server_settings[u"use_dbus"] = False
3182
1869
tcp_server.use_dbus = False
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"))
3193
1870
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1871
service = AvahiService(name = server_settings[u"servicename"],
1872
servicetype = u"_mandos._tcp",
1873
protocol = protocol, bus = bus)
1874
if server_settings["interface"]:
1875
service.interface = (if_nametoindex
1876
(str(server_settings[u"interface"])))
1877
3194
1878
global multiprocessing_manager
3195
1879
multiprocessing_manager = multiprocessing.Manager()
3196
1880
3197
1881
client_class = Client
3198
1882
if use_dbus:
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))
1883
client_class = functools.partial(ClientDBus, bus = bus)
1884
def client_config_items(config, section):
1885
special_settings = {
1886
"approved_by_default":
1887
lambda: config.getboolean(section,
1888
"approved_by_default"),
1889
}
1890
for name, value in config.items(section):
3331
1891
try:
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
1892
yield (name, special_settings[name]())
1893
except KeyError:
1894
yield (name, value)
1895
1896
tcp_server.clients.update(set(
1897
client_class(name = section,
1898
config= dict(client_config_items(
1899
client_config, section)))
1900
for section in client_config.sections()))
3357
1901
if not tcp_server.clients:
3358
logger.warning("No clients defined")
3359
3360
if not foreground:
3361
if pidfile is not None:
3362
pid = os.getpid()
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)
3369
del pidfile
1902
logger.warning(u"No clients defined")
1903
1904
if not debug:
1905
try:
1906
with pidfile:
1907
pid = os.getpid()
1908
pidfile.write(str(pid) + "\n")
1909
del pidfile
1910
except IOError:
1911
logger.error(u"Could not write to file %r with PID %d",
1912
pidfilename, pid)
1913
except NameError:
1914
# "pidfile" was never created
1915
pass
3370
1916
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
1917
1918
signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
1920
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1921
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1922
3376
1923
if use_dbus:
3377
3378
@alternate_dbus_interfaces(
3379
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3380
class MandosDBusService(DBusObjectWithObjectManager):
1924
class MandosDBusService(dbus.service.Object):
3381
1925
"""A D-Bus proxy object"""
3382
3383
1926
def __init__(self):
3384
dbus.service.Object.__init__(self, bus, "/")
3385
3386
_interface = "se.recompile.Mandos"
3387
3388
@dbus.service.signal(_interface, signature="o")
1927
dbus.service.Object.__init__(self, bus, u"/")
1928
_interface = u"se.bsnet.fukt.Mandos"
1929
1930
@dbus.service.signal(_interface, signature=u"o")
3389
1931
def ClientAdded(self, objpath):
3390
1932
"D-Bus signal"
3391
1933
pass
3392
3393
@dbus.service.signal(_interface, signature="ss")
3394
def ClientNotFound(self, key_id, address):
1934
1935
@dbus.service.signal(_interface, signature=u"ss")
1936
def ClientNotFound(self, fingerprint, address):
3395
1937
"D-Bus signal"
3396
1938
pass
3397
3398
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3399
"true"})
3400
@dbus.service.signal(_interface, signature="os")
1939
1940
@dbus.service.signal(_interface, signature=u"os")
3401
1941
def ClientRemoved(self, objpath, name):
3402
1942
"D-Bus signal"
3403
1943
pass
3404
3405
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3406
"true"})
3407
@dbus.service.method(_interface, out_signature="ao")
1944
1945
@dbus.service.method(_interface, out_signature=u"ao")
3408
1946
def GetAllClients(self):
3409
1947
"D-Bus method"
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"})
1948
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
1950
3415
1951
@dbus.service.method(_interface,
3416
out_signature="a{oa{sv}}")
1952
out_signature=u"a{oa{sv}}")
3417
1953
def GetAllClientsWithProperties(self):
3418
1954
"D-Bus method"
3419
1955
return dbus.Dictionary(
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")
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
1959
1960
@dbus.service.method(_interface, in_signature=u"o")
3426
1961
def RemoveClient(self, object_path):
3427
1962
"D-Bus method"
3428
for c in tcp_server.clients.values():
1963
for c in tcp_server.clients:
3429
1964
if c.dbus_object_path == object_path:
3430
del tcp_server.clients[c.name]
1965
tcp_server.clients.remove(c)
3431
1966
c.remove_from_connection()
3432
# Don't signal the disabling
1967
# Don't signal anything except ClientRemoved
3433
1968
c.disable(quiet=True)
3434
# Emit D-Bus signal for removal
3435
self.client_removed_signal(c)
1969
# Emit D-Bus signal
1970
self.ClientRemoved(object_path, c.name)
3436
1971
return
3437
1972
raise KeyError(object_path)
3438
1973
3439
1974
del _interface
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
1975
3477
1976
mandos_dbus_service = MandosDBusService()
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
1977
3484
1978
def cleanup():
3485
1979
"Cleanup function; run on exit"
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
1980
service.cleanup()
1981
3548
1982
while tcp_server.clients:
3549
name, client = tcp_server.clients.popitem()
1983
client = tcp_server.clients.pop()
3550
1984
if use_dbus:
3551
1985
client.remove_from_connection()
3552
# Don't signal the disabling
1986
client.disable_hook = None
1987
# Don't signal anything except ClientRemoved
3553
1988
client.disable(quiet=True)
3554
# Emit D-Bus signal for removal
3555
1989
if use_dbus:
3556
mandos_dbus_service.client_removed_signal(client)
3557
client_settings.clear()
3558
1990
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1992
client.name)
1993
3559
1994
atexit.register(cleanup)
3560
3561
for client in tcp_server.clients.values():
1995
1996
for client in tcp_server.clients:
3562
1997
if use_dbus:
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
1998
# Emit D-Bus signal
1999
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2000
client.enable()
2001
3569
2002
tcp_server.enable()
3570
2003
tcp_server.server_activate()
3571
2004
3572
2005
# Find out what port we got
3573
if zeroconf:
3574
service.port = tcp_server.socket.getsockname()[1]
2006
service.port = tcp_server.socket.getsockname()[1]
3575
2007
if use_ipv6:
3576
logger.info("Now listening on address %r, port %d,"
3577
" flowinfo %d, scope_id %d",
3578
*tcp_server.socket.getsockname())
2008
logger.info(u"Now listening on address %r, port %d,"
2009
" flowinfo %d, scope_id %d"
2010
% tcp_server.socket.getsockname())
3579
2011
else: # IPv4
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
2012
logger.info(u"Now listening on address %r, port %d"
2013
% tcp_server.socket.getsockname())
2014
2015
#service.interface = tcp_server.socket.getsockname()[3]
2016
3585
2017
try:
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")
2018
# From the Avahi example code
2019
try:
2020
service.activate()
2021
except dbus.exceptions.DBusException, error:
2022
logger.critical(u"DBusException: %s", error)
2023
cleanup()
2024
sys.exit(1)
2025
# End of Avahi example code
2026
2027
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2028
lambda *args, **kwargs:
2029
(tcp_server.handle_request
2030
(*args[2:], **kwargs) or True))
2031
2032
logger.debug(u"Starting main loop")
3602
2033
main_loop.run()
3603
except AvahiError as error:
3604
logger.critical("Avahi Error", exc_info=error)
2034
except AvahiError, error:
2035
logger.critical(u"AvahiError: %s", error)
3605
2036
cleanup()
3606
2037
sys.exit(1)
3607
2038
except KeyboardInterrupt:
3608
2039
if debug:
3609
print("", file=sys.stderr)
3610
logger.debug("Server received KeyboardInterrupt")
3611
logger.debug("Server exiting")
2040
print >> sys.stderr
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
3612
2043
# Must run before the D-Bus bus name gets deregistered
3613
2044
cleanup()
3614
2045
3615
3616
2046
if __name__ == '__main__':
3617
2047
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0